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AArch64 GDBserver support.
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
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252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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"
252b5132 40
b9c361e0
JL		 41typedef enum split16_format_type
42{
43 split16a_type = 0,
44 split16d_type
45}
46split16_format_type;
47
f0fe0e16 48/* RELA relocations are used here. */
252b5132 49
252b5132 50static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 52static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
b9c361e0
JL		 54static void ppc_elf_vle_split16
55 (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
252b5132 56
70bccea4
AM		 57/* Branch prediction bit for branch taken relocs. */
58#define BRANCH_PREDICT_BIT 0x200000
59/* Mask to set RA in memory instructions. */
60#define RA_REGISTER_MASK 0x001f0000
61/* Value to shift register by to insert RA. */
62#define RA_REGISTER_SHIFT 16
252b5132
RH		 63
64/* The name of the dynamic interpreter. This is put in the .interp
65 section. */
252b5132
RH		 66#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
67
d7128ce4 68/* For old-style PLT. */
252b5132
RH		 69/* The number of single-slot PLT entries (the rest use two slots). */
70#define PLT_NUM_SINGLE_ENTRIES 8192
71
d7128ce4 72/* For new-style .glink and .plt. */
a6aa5195 73#define GLINK_PLTRESOLVE 16*4
d7128ce4 74#define GLINK_ENTRY_SIZE 4*4
a7f2871e 75#define TLS_GET_ADDR_GLINK_SIZE 12*4
d7128ce4 76
9d8504b1
PB		 77/* VxWorks uses its own plt layout, filled in by the static linker. */
78
79/* The standard VxWorks PLT entry. */
80#define VXWORKS_PLT_ENTRY_SIZE 32
81static const bfd_vma ppc_elf_vxworks_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d800000, /* lis r12,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93static const bfd_vma ppc_elf_vxworks_pic_plt_entry
94 [VXWORKS_PLT_ENTRY_SIZE / 4] =
95 {
96 0x3d9e0000, /* addis r12,r30,0 */
97 0x818c0000, /* lwz r12,0(r12) */
98 0x7d8903a6, /* mtctr r12 */
99 0x4e800420, /* bctr */
100 0x39600000, /* li r11,0 */
101 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
102 0x60000000, /* nop */
103 0x60000000, /* nop */
104 };
105
106/* The initial VxWorks PLT entry. */
107#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
108static const bfd_vma ppc_elf_vxworks_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x3d800000, /* lis r12,0 */
112 0x398c0000, /* addi r12,r12,0 */
113 0x800c0008, /* lwz r0,8(r12) */
114 0x7c0903a6, /* mtctr r0 */
115 0x818c0004, /* lwz r12,4(r12) */
116 0x4e800420, /* bctr */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
121 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
122 {
123 0x819e0008, /* lwz r12,8(r30) */
124 0x7d8903a6, /* mtctr r12 */
125 0x819e0004, /* lwz r12,4(r30) */
126 0x4e800420, /* bctr */
127 0x60000000, /* nop */
128 0x60000000, /* nop */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 };
132
133/* For executables, we have some additional relocations in
134 .rela.plt.unloaded, for the kernel loader. */
135
136/* The number of non-JMP_SLOT relocations per PLT0 slot. */
137#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
138/* The number of relocations in the PLTResolve slot. */
139#define VXWORKS_PLTRESOLVE_RELOCS 2
140/* The number of relocations in the PLTResolve slot when when creating
141 a shared library. */
142#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
143
d7128ce4 144/* Some instructions. */
d7128ce4 145#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM		 146#define ADDIS_11_30 0x3d7e0000
147#define ADDIS_12_12 0x3d8c0000
d7128ce4 148#define ADDI_11_11 0x396b0000
d7128ce4 149#define ADD_0_11_11 0x7c0b5a14
a7f2871e 150#define ADD_3_12_2 0x7c6c1214
d7128ce4 151#define ADD_11_0_11 0x7d605a14
a6aa5195
AM		 152#define B 0x48000000
153#define BCL_20_31 0x429f0005
d7128ce4 154#define BCTR 0x4e800420
a7f2871e
AM		 155#define BEQLR 0x4d820020
156#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM		 157#define LIS_11 0x3d600000
158#define LIS_12 0x3d800000
a6aa5195
AM		 159#define LWZU_0_12 0x840c0000
160#define LWZ_0_12 0x800c0000
a7f2871e 161#define LWZ_11_3 0x81630000
a6aa5195
AM		 162#define LWZ_11_11 0x816b0000
163#define LWZ_11_30 0x817e0000
a7f2871e 164#define LWZ_12_3 0x81830000
a6aa5195 165#define LWZ_12_12 0x818c0000
a7f2871e
AM		 166#define MR_0_3 0x7c601b78
167#define MR_3_0 0x7c030378
a6aa5195
AM		 168#define MFLR_0 0x7c0802a6
169#define MFLR_12 0x7d8802a6
170#define MTCTR_0 0x7c0903a6
171#define MTCTR_11 0x7d6903a6
172#define MTLR_0 0x7c0803a6
173#define NOP 0x60000000
174#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM		 175
176/* Offset of tp and dtp pointers from start of TLS block. */
177#define TP_OFFSET 0x7000
178#define DTP_OFFSET 0x8000
e87d4038
AM		 179
180/* The value of a defined global symbol. */
181#define SYM_VAL(SYM) \
182 ((SYM)->root.u.def.section->output_section->vma \
183 + (SYM)->root.u.def.section->output_offset \
184 + (SYM)->root.u.def.value)
7fce784e 185\f
e47cd125 186static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 187
8da6118f 188static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH		 189 /* This reloc does nothing. */
190 HOWTO (R_PPC_NONE, /* type */
191 0, /* rightshift */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
193 32, /* bitsize */
b34976b6 194 FALSE, /* pc_relative */
252b5132
RH		 195 0, /* bitpos */
196 complain_overflow_bitfield, /* complain_on_overflow */
197 bfd_elf_generic_reloc, /* special_function */
198 "R_PPC_NONE", /* name */
b34976b6 199 FALSE, /* partial_inplace */
252b5132
RH		 200 0, /* src_mask */
201 0, /* dst_mask */
b34976b6 202 FALSE), /* pcrel_offset */
252b5132
RH		 203
204 /* A standard 32 bit relocation. */
205 HOWTO (R_PPC_ADDR32, /* type */
206 0, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 32, /* bitsize */
b34976b6 209 FALSE, /* pc_relative */
252b5132
RH		 210 0, /* bitpos */
211 complain_overflow_bitfield, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC_ADDR32", /* name */
b34976b6 214 FALSE, /* partial_inplace */
252b5132
RH		 215 0, /* src_mask */
216 0xffffffff, /* dst_mask */
b34976b6 217 FALSE), /* pcrel_offset */
252b5132
RH		 218
219 /* An absolute 26 bit branch; the lower two bits must be zero.
220 FIXME: we don't check that, we just clear them. */
221 HOWTO (R_PPC_ADDR24, /* type */
222 0, /* rightshift */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
224 26, /* bitsize */
b34976b6 225 FALSE, /* pc_relative */
252b5132
RH		 226 0, /* bitpos */
227 complain_overflow_bitfield, /* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
229 "R_PPC_ADDR24", /* name */
b34976b6 230 FALSE, /* partial_inplace */
252b5132
RH		 231 0, /* src_mask */
232 0x3fffffc, /* dst_mask */
b34976b6 233 FALSE), /* pcrel_offset */
252b5132
RH		 234
235 /* A standard 16 bit relocation. */
236 HOWTO (R_PPC_ADDR16, /* type */
237 0, /* rightshift */
238 1, /* size (0 = byte, 1 = short, 2 = long) */
239 16, /* bitsize */
b34976b6 240 FALSE, /* pc_relative */
252b5132
RH		 241 0, /* bitpos */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC_ADDR16", /* name */
b34976b6 245 FALSE, /* partial_inplace */
252b5132
RH		 246 0, /* src_mask */
247 0xffff, /* dst_mask */
b34976b6 248 FALSE), /* pcrel_offset */
252b5132
RH		 249
250 /* A 16 bit relocation without overflow. */
251 HOWTO (R_PPC_ADDR16_LO, /* type */
252 0, /* rightshift */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
b34976b6 255 FALSE, /* pc_relative */
252b5132
RH		 256 0, /* bitpos */
257 complain_overflow_dont,/* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC_ADDR16_LO", /* name */
b34976b6 260 FALSE, /* partial_inplace */
252b5132
RH		 261 0, /* src_mask */
262 0xffff, /* dst_mask */
b34976b6 263 FALSE), /* pcrel_offset */
252b5132
RH		 264
265 /* The high order 16 bits of an address. */
266 HOWTO (R_PPC_ADDR16_HI, /* type */
267 16, /* rightshift */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
269 16, /* bitsize */
b34976b6 270 FALSE, /* pc_relative */
252b5132
RH		 271 0, /* bitpos */
272 complain_overflow_dont, /* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC_ADDR16_HI", /* name */
b34976b6 275 FALSE, /* partial_inplace */
252b5132
RH		 276 0, /* src_mask */
277 0xffff, /* dst_mask */
b34976b6 278 FALSE), /* pcrel_offset */
252b5132
RH		 279
280 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 281 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH		 282 HOWTO (R_PPC_ADDR16_HA, /* type */
283 16, /* rightshift */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
285 16, /* bitsize */
b34976b6 286 FALSE, /* pc_relative */
252b5132
RH		 287 0, /* bitpos */
288 complain_overflow_dont, /* complain_on_overflow */
289 ppc_elf_addr16_ha_reloc, /* special_function */
290 "R_PPC_ADDR16_HA", /* name */
b34976b6 291 FALSE, /* partial_inplace */
252b5132
RH		 292 0, /* src_mask */
293 0xffff, /* dst_mask */
b34976b6 294 FALSE), /* pcrel_offset */
252b5132
RH		 295
296 /* An absolute 16 bit branch; the lower two bits must be zero.
297 FIXME: we don't check that, we just clear them. */
298 HOWTO (R_PPC_ADDR14, /* type */
299 0, /* rightshift */
300 2, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
b34976b6 302 FALSE, /* pc_relative */
252b5132
RH		 303 0, /* bitpos */
304 complain_overflow_bitfield, /* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_PPC_ADDR14", /* name */
b34976b6 307 FALSE, /* partial_inplace */
252b5132
RH		 308 0, /* src_mask */
309 0xfffc, /* dst_mask */
b34976b6 310 FALSE), /* pcrel_offset */
252b5132
RH		 311
312 /* An absolute 16 bit branch, for which bit 10 should be set to
313 indicate that the branch is expected to be taken. The lower two
8da6118f 314 bits must be zero. */
252b5132
RH		 315 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 16, /* bitsize */
b34976b6 319 FALSE, /* pc_relative */
252b5132
RH		 320 0, /* bitpos */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 324 FALSE, /* partial_inplace */
252b5132
RH		 325 0, /* src_mask */
326 0xfffc, /* dst_mask */
b34976b6 327 FALSE), /* pcrel_offset */
252b5132
RH		 328
329 /* An absolute 16 bit branch, for which bit 10 should be set to
330 indicate that the branch is not expected to be taken. The lower
331 two bits must be zero. */
332 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
333 0, /* rightshift */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
335 16, /* bitsize */
b34976b6 336 FALSE, /* pc_relative */
252b5132
RH		 337 0, /* bitpos */
338 complain_overflow_bitfield, /* complain_on_overflow */
339 bfd_elf_generic_reloc, /* special_function */
340 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 341 FALSE, /* partial_inplace */
252b5132
RH		 342 0, /* src_mask */
343 0xfffc, /* dst_mask */
b34976b6 344 FALSE), /* pcrel_offset */
252b5132 345
8da6118f 346 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH		 347 HOWTO (R_PPC_REL24, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 26, /* bitsize */
b34976b6 351 TRUE, /* pc_relative */
252b5132
RH		 352 0, /* bitpos */
353 complain_overflow_signed, /* complain_on_overflow */
354 bfd_elf_generic_reloc, /* special_function */
355 "R_PPC_REL24", /* name */
b34976b6 356 FALSE, /* partial_inplace */
252b5132
RH		 357 0, /* src_mask */
358 0x3fffffc, /* dst_mask */
b34976b6 359 TRUE), /* pcrel_offset */
252b5132 360
8da6118f 361 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH		 362 HOWTO (R_PPC_REL14, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 16, /* bitsize */
b34976b6 366 TRUE, /* pc_relative */
252b5132
RH		 367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_PPC_REL14", /* name */
b34976b6 371 FALSE, /* partial_inplace */
252b5132
RH		 372 0, /* src_mask */
373 0xfffc, /* dst_mask */
b34976b6 374 TRUE), /* pcrel_offset */
252b5132 375
8da6118f 376 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 377 the branch is expected to be taken. The lower two bits must be
378 zero. */
379 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
380 0, /* rightshift */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
382 16, /* bitsize */
b34976b6 383 TRUE, /* pc_relative */
252b5132
RH		 384 0, /* bitpos */
385 complain_overflow_signed, /* complain_on_overflow */
386 bfd_elf_generic_reloc, /* special_function */
387 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 388 FALSE, /* partial_inplace */
252b5132
RH		 389 0, /* src_mask */
390 0xfffc, /* dst_mask */
b34976b6 391 TRUE), /* pcrel_offset */
252b5132 392
8da6118f 393 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 394 the branch is not expected to be taken. The lower two bits must
395 be zero. */
396 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
397 0, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 16, /* bitsize */
b34976b6 400 TRUE, /* pc_relative */
252b5132
RH		 401 0, /* bitpos */
402 complain_overflow_signed, /* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 405 FALSE, /* partial_inplace */
252b5132
RH		 406 0, /* src_mask */
407 0xfffc, /* dst_mask */
b34976b6 408 TRUE), /* pcrel_offset */
252b5132
RH		 409
410 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
411 symbol. */
412 HOWTO (R_PPC_GOT16, /* type */
413 0, /* rightshift */
414 1, /* size (0 = byte, 1 = short, 2 = long) */
415 16, /* bitsize */
b34976b6 416 FALSE, /* pc_relative */
252b5132
RH		 417 0, /* bitpos */
418 complain_overflow_signed, /* complain_on_overflow */
419 bfd_elf_generic_reloc, /* special_function */
420 "R_PPC_GOT16", /* name */
b34976b6 421 FALSE, /* partial_inplace */
252b5132
RH		 422 0, /* src_mask */
423 0xffff, /* dst_mask */
b34976b6 424 FALSE), /* pcrel_offset */
252b5132
RH		 425
426 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
427 the symbol. */
428 HOWTO (R_PPC_GOT16_LO, /* type */
429 0, /* rightshift */
430 1, /* size (0 = byte, 1 = short, 2 = long) */
431 16, /* bitsize */
b34976b6 432 FALSE, /* pc_relative */
252b5132
RH		 433 0, /* bitpos */
434 complain_overflow_dont, /* complain_on_overflow */
435 bfd_elf_generic_reloc, /* special_function */
436 "R_PPC_GOT16_LO", /* name */
b34976b6 437 FALSE, /* partial_inplace */
252b5132
RH		 438 0, /* src_mask */
439 0xffff, /* dst_mask */
b34976b6 440 FALSE), /* pcrel_offset */
252b5132
RH		 441
442 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
443 the symbol. */
444 HOWTO (R_PPC_GOT16_HI, /* type */
445 16, /* rightshift */
446 1, /* size (0 = byte, 1 = short, 2 = long) */
447 16, /* bitsize */
b34976b6 448 FALSE, /* pc_relative */
252b5132
RH		 449 0, /* bitpos */
450 complain_overflow_bitfield, /* complain_on_overflow */
451 bfd_elf_generic_reloc, /* special_function */
452 "R_PPC_GOT16_HI", /* name */
b34976b6 453 FALSE, /* partial_inplace */
252b5132
RH		 454 0, /* src_mask */
455 0xffff, /* dst_mask */
b34976b6 456 FALSE), /* pcrel_offset */
252b5132
RH		 457
458 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
459 the symbol. */
460 HOWTO (R_PPC_GOT16_HA, /* type */
461 16, /* rightshift */
462 1, /* size (0 = byte, 1 = short, 2 = long) */
463 16, /* bitsize */
b34976b6 464 FALSE, /* pc_relative */
252b5132
RH		 465 0, /* bitpos */
466 complain_overflow_bitfield, /* complain_on_overflow */
467 ppc_elf_addr16_ha_reloc, /* special_function */
468 "R_PPC_GOT16_HA", /* name */
b34976b6 469 FALSE, /* partial_inplace */
252b5132
RH		 470 0, /* src_mask */
471 0xffff, /* dst_mask */
b34976b6 472 FALSE), /* pcrel_offset */
252b5132
RH		 473
474 /* Like R_PPC_REL24, but referring to the procedure linkage table
475 entry for the symbol. */
476 HOWTO (R_PPC_PLTREL24, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 26, /* bitsize */
b34976b6 480 TRUE, /* pc_relative */
252b5132
RH		 481 0, /* bitpos */
482 complain_overflow_signed, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_PLTREL24", /* name */
b34976b6 485 FALSE, /* partial_inplace */
252b5132
RH		 486 0, /* src_mask */
487 0x3fffffc, /* dst_mask */
b34976b6 488 TRUE), /* pcrel_offset */
252b5132
RH		 489
490 /* This is used only by the dynamic linker. The symbol should exist
491 both in the object being run and in some shared library. The
492 dynamic linker copies the data addressed by the symbol from the
493 shared library into the object, because the object being
494 run has to have the data at some particular address. */
495 HOWTO (R_PPC_COPY, /* type */
496 0, /* rightshift */
497 2, /* size (0 = byte, 1 = short, 2 = long) */
498 32, /* bitsize */
b34976b6 499 FALSE, /* pc_relative */
252b5132
RH		 500 0, /* bitpos */
501 complain_overflow_bitfield, /* complain_on_overflow */
502 bfd_elf_generic_reloc, /* special_function */
503 "R_PPC_COPY", /* name */
b34976b6 504 FALSE, /* partial_inplace */
252b5132
RH		 505 0, /* src_mask */
506 0, /* dst_mask */
b34976b6 507 FALSE), /* pcrel_offset */
252b5132
RH		 508
509 /* Like R_PPC_ADDR32, but used when setting global offset table
510 entries. */
511 HOWTO (R_PPC_GLOB_DAT, /* type */
512 0, /* rightshift */
513 2, /* size (0 = byte, 1 = short, 2 = long) */
514 32, /* bitsize */
b34976b6 515 FALSE, /* pc_relative */
252b5132
RH		 516 0, /* bitpos */
517 complain_overflow_bitfield, /* complain_on_overflow */
518 bfd_elf_generic_reloc, /* special_function */
519 "R_PPC_GLOB_DAT", /* name */
b34976b6 520 FALSE, /* partial_inplace */
252b5132
RH		 521 0, /* src_mask */
522 0xffffffff, /* dst_mask */
b34976b6 523 FALSE), /* pcrel_offset */
252b5132
RH		 524
525 /* Marks a procedure linkage table entry for a symbol. */
526 HOWTO (R_PPC_JMP_SLOT, /* type */
527 0, /* rightshift */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
529 32, /* bitsize */
b34976b6 530 FALSE, /* pc_relative */
252b5132
RH		 531 0, /* bitpos */
532 complain_overflow_bitfield, /* complain_on_overflow */
533 bfd_elf_generic_reloc, /* special_function */
534 "R_PPC_JMP_SLOT", /* name */
b34976b6 535 FALSE, /* partial_inplace */
252b5132
RH		 536 0, /* src_mask */
537 0, /* dst_mask */
b34976b6 538 FALSE), /* pcrel_offset */
252b5132
RH		 539
540 /* Used only by the dynamic linker. When the object is run, this
541 longword is set to the load address of the object, plus the
542 addend. */
543 HOWTO (R_PPC_RELATIVE, /* type */
544 0, /* rightshift */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
546 32, /* bitsize */
b34976b6 547 FALSE, /* pc_relative */
252b5132
RH		 548 0, /* bitpos */
549 complain_overflow_bitfield, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC_RELATIVE", /* name */
b34976b6 552 FALSE, /* partial_inplace */
252b5132
RH		 553 0, /* src_mask */
554 0xffffffff, /* dst_mask */
b34976b6 555 FALSE), /* pcrel_offset */
252b5132
RH		 556
557 /* Like R_PPC_REL24, but uses the value of the symbol within the
558 object rather than the final value. Normally used for
559 _GLOBAL_OFFSET_TABLE_. */
560 HOWTO (R_PPC_LOCAL24PC, /* type */
561 0, /* rightshift */
562 2, /* size (0 = byte, 1 = short, 2 = long) */
563 26, /* bitsize */
b34976b6 564 TRUE, /* pc_relative */
252b5132
RH		 565 0, /* bitpos */
566 complain_overflow_signed, /* complain_on_overflow */
567 bfd_elf_generic_reloc, /* special_function */
568 "R_PPC_LOCAL24PC", /* name */
b34976b6 569 FALSE, /* partial_inplace */
252b5132
RH		 570 0, /* src_mask */
571 0x3fffffc, /* dst_mask */
b34976b6 572 TRUE), /* pcrel_offset */
252b5132
RH		 573
574 /* Like R_PPC_ADDR32, but may be unaligned. */
575 HOWTO (R_PPC_UADDR32, /* type */
576 0, /* rightshift */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
578 32, /* bitsize */
b34976b6 579 FALSE, /* pc_relative */
252b5132
RH		 580 0, /* bitpos */
581 complain_overflow_bitfield, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_PPC_UADDR32", /* name */
b34976b6 584 FALSE, /* partial_inplace */
252b5132
RH		 585 0, /* src_mask */
586 0xffffffff, /* dst_mask */
b34976b6 587 FALSE), /* pcrel_offset */
252b5132
RH		 588
589 /* Like R_PPC_ADDR16, but may be unaligned. */
590 HOWTO (R_PPC_UADDR16, /* type */
591 0, /* rightshift */
592 1, /* size (0 = byte, 1 = short, 2 = long) */
593 16, /* bitsize */
b34976b6 594 FALSE, /* pc_relative */
252b5132
RH		 595 0, /* bitpos */
596 complain_overflow_bitfield, /* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 "R_PPC_UADDR16", /* name */
b34976b6 599 FALSE, /* partial_inplace */
252b5132
RH		 600 0, /* src_mask */
601 0xffff, /* dst_mask */
b34976b6 602 FALSE), /* pcrel_offset */
252b5132
RH		 603
604 /* 32-bit PC relative */
605 HOWTO (R_PPC_REL32, /* type */
606 0, /* rightshift */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
608 32, /* bitsize */
b34976b6 609 TRUE, /* pc_relative */
252b5132
RH		 610 0, /* bitpos */
611 complain_overflow_bitfield, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_PPC_REL32", /* name */
b34976b6 614 FALSE, /* partial_inplace */
252b5132
RH		 615 0, /* src_mask */
616 0xffffffff, /* dst_mask */
b34976b6 617 TRUE), /* pcrel_offset */
252b5132
RH		 618
619 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 620 FIXME: not supported. */
252b5132
RH		 621 HOWTO (R_PPC_PLT32, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 32, /* bitsize */
b34976b6 625 FALSE, /* pc_relative */
252b5132
RH		 626 0, /* bitpos */
627 complain_overflow_bitfield, /* complain_on_overflow */
628 bfd_elf_generic_reloc, /* special_function */
629 "R_PPC_PLT32", /* name */
b34976b6 630 FALSE, /* partial_inplace */
252b5132
RH		 631 0, /* src_mask */
632 0, /* dst_mask */
b34976b6 633 FALSE), /* pcrel_offset */
252b5132
RH		 634
635 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 636 FIXME: not supported. */
252b5132
RH		 637 HOWTO (R_PPC_PLTREL32, /* type */
638 0, /* rightshift */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
640 32, /* bitsize */
b34976b6 641 TRUE, /* pc_relative */
252b5132
RH		 642 0, /* bitpos */
643 complain_overflow_bitfield, /* complain_on_overflow */
644 bfd_elf_generic_reloc, /* special_function */
645 "R_PPC_PLTREL32", /* name */
b34976b6 646 FALSE, /* partial_inplace */
252b5132
RH		 647 0, /* src_mask */
648 0, /* dst_mask */
b34976b6 649 TRUE), /* pcrel_offset */
252b5132
RH		 650
651 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
652 the symbol. */
653 HOWTO (R_PPC_PLT16_LO, /* type */
654 0, /* rightshift */
655 1, /* size (0 = byte, 1 = short, 2 = long) */
656 16, /* bitsize */
b34976b6 657 FALSE, /* pc_relative */
252b5132
RH		 658 0, /* bitpos */
659 complain_overflow_dont, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_PPC_PLT16_LO", /* name */
b34976b6 662 FALSE, /* partial_inplace */
252b5132
RH		 663 0, /* src_mask */
664 0xffff, /* dst_mask */
b34976b6 665 FALSE), /* pcrel_offset */
252b5132
RH		 666
667 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
668 the symbol. */
669 HOWTO (R_PPC_PLT16_HI, /* type */
670 16, /* rightshift */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
672 16, /* bitsize */
b34976b6 673 FALSE, /* pc_relative */
252b5132
RH		 674 0, /* bitpos */
675 complain_overflow_bitfield, /* complain_on_overflow */
676 bfd_elf_generic_reloc, /* special_function */
677 "R_PPC_PLT16_HI", /* name */
b34976b6 678 FALSE, /* partial_inplace */
252b5132
RH		 679 0, /* src_mask */
680 0xffff, /* dst_mask */
b34976b6 681 FALSE), /* pcrel_offset */
252b5132
RH		 682
683 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
684 the symbol. */
685 HOWTO (R_PPC_PLT16_HA, /* type */
686 16, /* rightshift */
687 1, /* size (0 = byte, 1 = short, 2 = long) */
688 16, /* bitsize */
b34976b6 689 FALSE, /* pc_relative */
252b5132
RH		 690 0, /* bitpos */
691 complain_overflow_bitfield, /* complain_on_overflow */
692 ppc_elf_addr16_ha_reloc, /* special_function */
693 "R_PPC_PLT16_HA", /* name */
b34976b6 694 FALSE, /* partial_inplace */
252b5132
RH		 695 0, /* src_mask */
696 0xffff, /* dst_mask */
b34976b6 697 FALSE), /* pcrel_offset */
252b5132
RH		 698
699 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
700 small data items. */
701 HOWTO (R_PPC_SDAREL16, /* type */
702 0, /* rightshift */
703 1, /* size (0 = byte, 1 = short, 2 = long) */
704 16, /* bitsize */
b34976b6 705 FALSE, /* pc_relative */
252b5132
RH		 706 0, /* bitpos */
707 complain_overflow_signed, /* complain_on_overflow */
708 bfd_elf_generic_reloc, /* special_function */
709 "R_PPC_SDAREL16", /* name */
b34976b6 710 FALSE, /* partial_inplace */
252b5132
RH		 711 0, /* src_mask */
712 0xffff, /* dst_mask */
b34976b6 713 FALSE), /* pcrel_offset */
252b5132 714
c061c2d8 715 /* 16-bit section relative relocation. */
252b5132
RH		 716 HOWTO (R_PPC_SECTOFF, /* type */
717 0, /* rightshift */
c061c2d8
AM		 718 1, /* size (0 = byte, 1 = short, 2 = long) */
719 16, /* bitsize */
b34976b6 720 FALSE, /* pc_relative */
252b5132
RH		 721 0, /* bitpos */
722 complain_overflow_bitfield, /* complain_on_overflow */
723 bfd_elf_generic_reloc, /* special_function */
724 "R_PPC_SECTOFF", /* name */
b34976b6 725 FALSE, /* partial_inplace */
252b5132 726 0, /* src_mask */
c061c2d8 727 0xffff, /* dst_mask */
b34976b6 728 FALSE), /* pcrel_offset */
252b5132 729
c3668558 730 /* 16-bit lower half section relative relocation. */
252b5132
RH		 731 HOWTO (R_PPC_SECTOFF_LO, /* type */
732 0, /* rightshift */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
734 16, /* bitsize */
b34976b6 735 FALSE, /* pc_relative */
252b5132
RH		 736 0, /* bitpos */
737 complain_overflow_dont, /* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_PPC_SECTOFF_LO", /* name */
b34976b6 740 FALSE, /* partial_inplace */
252b5132
RH		 741 0, /* src_mask */
742 0xffff, /* dst_mask */
b34976b6 743 FALSE), /* pcrel_offset */
252b5132 744
c3668558 745 /* 16-bit upper half section relative relocation. */
252b5132
RH		 746 HOWTO (R_PPC_SECTOFF_HI, /* type */
747 16, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 16, /* bitsize */
b34976b6 750 FALSE, /* pc_relative */
252b5132
RH		 751 0, /* bitpos */
752 complain_overflow_bitfield, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_PPC_SECTOFF_HI", /* name */
b34976b6 755 FALSE, /* partial_inplace */
252b5132
RH		 756 0, /* src_mask */
757 0xffff, /* dst_mask */
b34976b6 758 FALSE), /* pcrel_offset */
252b5132 759
c3668558 760 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH		 761 HOWTO (R_PPC_SECTOFF_HA, /* type */
762 16, /* rightshift */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
b34976b6 765 FALSE, /* pc_relative */
252b5132
RH		 766 0, /* bitpos */
767 complain_overflow_bitfield, /* complain_on_overflow */
768 ppc_elf_addr16_ha_reloc, /* special_function */
769 "R_PPC_SECTOFF_HA", /* name */
b34976b6 770 FALSE, /* partial_inplace */
252b5132
RH		 771 0, /* src_mask */
772 0xffff, /* dst_mask */
b34976b6 773 FALSE), /* pcrel_offset */
252b5132 774
727fc41e 775 /* Marker relocs for TLS. */
7619e7c7 776 HOWTO (R_PPC_TLS,
252b5132
RH		 777 0, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 32, /* bitsize */
b34976b6 780 FALSE, /* pc_relative */
252b5132 781 0, /* bitpos */
7619e7c7 782 complain_overflow_dont, /* complain_on_overflow */
252b5132 783 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM		 784 "R_PPC_TLS", /* name */
785 FALSE, /* partial_inplace */
786 0, /* src_mask */
787 0, /* dst_mask */
788 FALSE), /* pcrel_offset */
789
727fc41e
AM		 790 HOWTO (R_PPC_TLSGD,
791 0, /* rightshift */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
793 32, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
798 "R_PPC_TLSGD", /* name */
799 FALSE, /* partial_inplace */
800 0, /* src_mask */
801 0, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 HOWTO (R_PPC_TLSLD,
805 0, /* rightshift */
806 2, /* size (0 = byte, 1 = short, 2 = long) */
807 32, /* bitsize */
808 FALSE, /* pc_relative */
809 0, /* bitpos */
810 complain_overflow_dont, /* complain_on_overflow */
811 bfd_elf_generic_reloc, /* special_function */
812 "R_PPC_TLSLD", /* name */
813 FALSE, /* partial_inplace */
814 0, /* src_mask */
815 0, /* dst_mask */
816 FALSE), /* pcrel_offset */
817
7619e7c7
AM		 818 /* Computes the load module index of the load module that contains the
819 definition of its TLS sym. */
820 HOWTO (R_PPC_DTPMOD32,
821 0, /* rightshift */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
823 32, /* bitsize */
824 FALSE, /* pc_relative */
825 0, /* bitpos */
826 complain_overflow_dont, /* complain_on_overflow */
827 ppc_elf_unhandled_reloc, /* special_function */
828 "R_PPC_DTPMOD32", /* name */
b34976b6 829 FALSE, /* partial_inplace */
252b5132
RH		 830 0, /* src_mask */
831 0xffffffff, /* dst_mask */
b34976b6 832 FALSE), /* pcrel_offset */
252b5132 833
7619e7c7
AM		 834 /* Computes a dtv-relative displacement, the difference between the value
835 of sym+add and the base address of the thread-local storage block that
836 contains the definition of sym, minus 0x8000. */
837 HOWTO (R_PPC_DTPREL32,
838 0, /* rightshift */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 32, /* bitsize */
841 FALSE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_dont, /* complain_on_overflow */
844 ppc_elf_unhandled_reloc, /* special_function */
845 "R_PPC_DTPREL32", /* name */
846 FALSE, /* partial_inplace */
847 0, /* src_mask */
848 0xffffffff, /* dst_mask */
849 FALSE), /* pcrel_offset */
850
851 /* A 16 bit dtprel reloc. */
852 HOWTO (R_PPC_DTPREL16,
252b5132
RH		 853 0, /* rightshift */
854 1, /* size (0 = byte, 1 = short, 2 = long) */
855 16, /* bitsize */
b34976b6 856 FALSE, /* pc_relative */
252b5132 857 0, /* bitpos */
7619e7c7
AM		 858 complain_overflow_signed, /* complain_on_overflow */
859 ppc_elf_unhandled_reloc, /* special_function */
860 "R_PPC_DTPREL16", /* name */
b34976b6 861 FALSE, /* partial_inplace */
252b5132
RH		 862 0, /* src_mask */
863 0xffff, /* dst_mask */
b34976b6 864 FALSE), /* pcrel_offset */
252b5132 865
7619e7c7
AM		 866 /* Like DTPREL16, but no overflow. */
867 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH		 868 0, /* rightshift */
869 1, /* size (0 = byte, 1 = short, 2 = long) */
870 16, /* bitsize */
b34976b6 871 FALSE, /* pc_relative */
252b5132 872 0, /* bitpos */
7619e7c7
AM		 873 complain_overflow_dont, /* complain_on_overflow */
874 ppc_elf_unhandled_reloc, /* special_function */
875 "R_PPC_DTPREL16_LO", /* name */
b34976b6 876 FALSE, /* partial_inplace */
252b5132
RH		 877 0, /* src_mask */
878 0xffff, /* dst_mask */
b34976b6 879 FALSE), /* pcrel_offset */
252b5132 880
7619e7c7
AM		 881 /* Like DTPREL16_LO, but next higher group of 16 bits. */
882 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH		 883 16, /* rightshift */
884 1, /* size (0 = byte, 1 = short, 2 = long) */
885 16, /* bitsize */
b34976b6 886 FALSE, /* pc_relative */
252b5132
RH		 887 0, /* bitpos */
888 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 889 ppc_elf_unhandled_reloc, /* special_function */
890 "R_PPC_DTPREL16_HI", /* name */
b34976b6 891 FALSE, /* partial_inplace */
252b5132
RH		 892 0, /* src_mask */
893 0xffff, /* dst_mask */
b34976b6 894 FALSE), /* pcrel_offset */
252b5132 895
7619e7c7
AM		 896 /* Like DTPREL16_HI, but adjust for low 16 bits. */
897 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH		 898 16, /* rightshift */
899 1, /* size (0 = byte, 1 = short, 2 = long) */
900 16, /* bitsize */
b34976b6 901 FALSE, /* pc_relative */
252b5132
RH		 902 0, /* bitpos */
903 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 904 ppc_elf_unhandled_reloc, /* special_function */
905 "R_PPC_DTPREL16_HA", /* name */
b34976b6 906 FALSE, /* partial_inplace */
252b5132
RH		 907 0, /* src_mask */
908 0xffff, /* dst_mask */
b34976b6 909 FALSE), /* pcrel_offset */
252b5132 910
7619e7c7
AM		 911 /* Computes a tp-relative displacement, the difference between the value of
912 sym+add and the value of the thread pointer (r13). */
913 HOWTO (R_PPC_TPREL32,
914 0, /* rightshift */
915 2, /* size (0 = byte, 1 = short, 2 = long) */
916 32, /* bitsize */
917 FALSE, /* pc_relative */
918 0, /* bitpos */
919 complain_overflow_dont, /* complain_on_overflow */
920 ppc_elf_unhandled_reloc, /* special_function */
921 "R_PPC_TPREL32", /* name */
922 FALSE, /* partial_inplace */
923 0, /* src_mask */
924 0xffffffff, /* dst_mask */
925 FALSE), /* pcrel_offset */
926
927 /* A 16 bit tprel reloc. */
928 HOWTO (R_PPC_TPREL16,
252b5132
RH		 929 0, /* rightshift */
930 1, /* size (0 = byte, 1 = short, 2 = long) */
931 16, /* bitsize */
b34976b6 932 FALSE, /* pc_relative */
252b5132 933 0, /* bitpos */
7619e7c7
AM		 934 complain_overflow_signed, /* complain_on_overflow */
935 ppc_elf_unhandled_reloc, /* special_function */
936 "R_PPC_TPREL16", /* name */
b34976b6 937 FALSE, /* partial_inplace */
252b5132
RH		 938 0, /* src_mask */
939 0xffff, /* dst_mask */
b34976b6 940 FALSE), /* pcrel_offset */
252b5132 941
7619e7c7
AM		 942 /* Like TPREL16, but no overflow. */
943 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH		 944 0, /* rightshift */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
946 16, /* bitsize */
b34976b6 947 FALSE, /* pc_relative */
252b5132 948 0, /* bitpos */
7619e7c7
AM		 949 complain_overflow_dont, /* complain_on_overflow */
950 ppc_elf_unhandled_reloc, /* special_function */
951 "R_PPC_TPREL16_LO", /* name */
b34976b6 952 FALSE, /* partial_inplace */
252b5132
RH		 953 0, /* src_mask */
954 0xffff, /* dst_mask */
b34976b6 955 FALSE), /* pcrel_offset */
252b5132 956
7619e7c7
AM		 957 /* Like TPREL16_LO, but next higher group of 16 bits. */
958 HOWTO (R_PPC_TPREL16_HI,
959 16, /* rightshift */
960 1, /* size (0 = byte, 1 = short, 2 = long) */
961 16, /* bitsize */
962 FALSE, /* pc_relative */
963 0, /* bitpos */
964 complain_overflow_dont, /* complain_on_overflow */
965 ppc_elf_unhandled_reloc, /* special_function */
966 "R_PPC_TPREL16_HI", /* name */
967 FALSE, /* partial_inplace */
968 0, /* src_mask */
969 0xffff, /* dst_mask */
970 FALSE), /* pcrel_offset */
971
972 /* Like TPREL16_HI, but adjust for low 16 bits. */
973 HOWTO (R_PPC_TPREL16_HA,
974 16, /* rightshift */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
976 16, /* bitsize */
977 FALSE, /* pc_relative */
978 0, /* bitpos */
979 complain_overflow_dont, /* complain_on_overflow */
980 ppc_elf_unhandled_reloc, /* special_function */
981 "R_PPC_TPREL16_HA", /* name */
982 FALSE, /* partial_inplace */
983 0, /* src_mask */
984 0xffff, /* dst_mask */
985 FALSE), /* pcrel_offset */
986
987 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
988 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
989 to the first entry. */
990 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH		 991 0, /* rightshift */
992 1, /* size (0 = byte, 1 = short, 2 = long) */
993 16, /* bitsize */
b34976b6 994 FALSE, /* pc_relative */
252b5132
RH		 995 0, /* bitpos */
996 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 997 ppc_elf_unhandled_reloc, /* special_function */
998 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 999 FALSE, /* partial_inplace */
252b5132
RH		 1000 0, /* src_mask */
1001 0xffff, /* dst_mask */
b34976b6 1002 FALSE), /* pcrel_offset */
252b5132 1003
7619e7c7
AM		 1004 /* Like GOT_TLSGD16, but no overflow. */
1005 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1006 0, /* rightshift */
7619e7c7 1007 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1008 16, /* bitsize */
b34976b6 1009 FALSE, /* pc_relative */
252b5132 1010 0, /* bitpos */
7619e7c7
AM		 1011 complain_overflow_dont, /* complain_on_overflow */
1012 ppc_elf_unhandled_reloc, /* special_function */
1013 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1014 FALSE, /* partial_inplace */
252b5132
RH		 1015 0, /* src_mask */
1016 0xffff, /* dst_mask */
b34976b6 1017 FALSE), /* pcrel_offset */
252b5132 1018
7619e7c7
AM		 1019 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1020 HOWTO (R_PPC_GOT_TLSGD16_HI,
1021 16, /* rightshift */
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 16, /* bitsize */
1024 FALSE, /* pc_relative */
1025 0, /* bitpos */
1026 complain_overflow_dont, /* complain_on_overflow */
1027 ppc_elf_unhandled_reloc, /* special_function */
1028 "R_PPC_GOT_TLSGD16_HI", /* name */
1029 FALSE, /* partial_inplace */
1030 0, /* src_mask */
1031 0xffff, /* dst_mask */
1032 FALSE), /* pcrel_offset */
252b5132 1033
7619e7c7
AM		 1034 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1035 HOWTO (R_PPC_GOT_TLSGD16_HA,
1036 16, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 16, /* bitsize */
1039 FALSE, /* pc_relative */
1040 0, /* bitpos */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc_elf_unhandled_reloc, /* special_function */
1043 "R_PPC_GOT_TLSGD16_HA", /* name */
1044 FALSE, /* partial_inplace */
1045 0, /* src_mask */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1048
1049 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1050 with values (sym+add)@dtpmod and zero, and computes the offset to the
1051 first entry. */
1052 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH		 1053 0, /* rightshift */
1054 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 16, /* bitsize */
7619e7c7 1056 FALSE, /* pc_relative */
252b5132
RH		 1057 0, /* bitpos */
1058 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 1059 ppc_elf_unhandled_reloc, /* special_function */
1060 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1061 FALSE, /* partial_inplace */
252b5132
RH		 1062 0, /* src_mask */
1063 0xffff, /* dst_mask */
b34976b6 1064 FALSE), /* pcrel_offset */
252b5132 1065
7619e7c7
AM		 1066 /* Like GOT_TLSLD16, but no overflow. */
1067 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1068 0, /* rightshift */
7619e7c7
AM		 1069 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 16, /* bitsize */
b34976b6 1071 FALSE, /* pc_relative */
252b5132
RH		 1072 0, /* bitpos */
1073 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 1074 ppc_elf_unhandled_reloc, /* special_function */
1075 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1076 FALSE, /* partial_inplace */
252b5132 1077 0, /* src_mask */
7619e7c7 1078 0xffff, /* dst_mask */
b34976b6 1079 FALSE), /* pcrel_offset */
252b5132 1080
7619e7c7
AM		 1081 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1082 HOWTO (R_PPC_GOT_TLSLD16_HI,
1083 16, /* rightshift */
1084 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 16, /* bitsize */
b34976b6 1086 FALSE, /* pc_relative */
252b5132
RH		 1087 0, /* bitpos */
1088 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 1089 ppc_elf_unhandled_reloc, /* special_function */
1090 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1091 FALSE, /* partial_inplace */
252b5132 1092 0, /* src_mask */
7619e7c7 1093 0xffff, /* dst_mask */
b34976b6 1094 FALSE), /* pcrel_offset */
252b5132 1095
7619e7c7
AM		 1096 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1097 HOWTO (R_PPC_GOT_TLSLD16_HA,
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 16, /* bitsize */
1101 FALSE, /* pc_relative */
1102 0, /* bitpos */
1103 complain_overflow_dont, /* complain_on_overflow */
1104 ppc_elf_unhandled_reloc, /* special_function */
1105 "R_PPC_GOT_TLSLD16_HA", /* name */
1106 FALSE, /* partial_inplace */
1107 0, /* src_mask */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1110
1111 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1112 the offset to the entry. */
1113 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH		 1114 0, /* rightshift */
1115 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
b34976b6 1117 FALSE, /* pc_relative */
252b5132
RH		 1118 0, /* bitpos */
1119 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 1120 ppc_elf_unhandled_reloc, /* special_function */
1121 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1122 FALSE, /* partial_inplace */
252b5132
RH		 1123 0, /* src_mask */
1124 0xffff, /* dst_mask */
b34976b6 1125 FALSE), /* pcrel_offset */
252b5132 1126
7619e7c7
AM		 1127 /* Like GOT_DTPREL16, but no overflow. */
1128 HOWTO (R_PPC_GOT_DTPREL16_LO,
1129 0, /* rightshift */
1130 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 16, /* bitsize */
1132 FALSE, /* pc_relative */
1133 0, /* bitpos */
1134 complain_overflow_dont, /* complain_on_overflow */
1135 ppc_elf_unhandled_reloc, /* special_function */
1136 "R_PPC_GOT_DTPREL16_LO", /* name */
1137 FALSE, /* partial_inplace */
1138 0, /* src_mask */
1139 0xffff, /* dst_mask */
1140 FALSE), /* pcrel_offset */
252b5132 1141
7619e7c7
AM		 1142 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1143 HOWTO (R_PPC_GOT_DTPREL16_HI,
1144 16, /* rightshift */
1145 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 16, /* bitsize */
1147 FALSE, /* pc_relative */
1148 0, /* bitpos */
1149 complain_overflow_dont, /* complain_on_overflow */
1150 ppc_elf_unhandled_reloc, /* special_function */
1151 "R_PPC_GOT_DTPREL16_HI", /* name */
1152 FALSE, /* partial_inplace */
1153 0, /* src_mask */
1154 0xffff, /* dst_mask */
1155 FALSE), /* pcrel_offset */
252b5132 1156
7619e7c7
AM		 1157 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1158 HOWTO (R_PPC_GOT_DTPREL16_HA,
1159 16, /* rightshift */
1160 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 16, /* bitsize */
1162 FALSE, /* pc_relative */
1163 0, /* bitpos */
1164 complain_overflow_dont, /* complain_on_overflow */
1165 ppc_elf_unhandled_reloc, /* special_function */
1166 "R_PPC_GOT_DTPREL16_HA", /* name */
1167 FALSE, /* partial_inplace */
1168 0, /* src_mask */
1169 0xffff, /* dst_mask */
1170 FALSE), /* pcrel_offset */
c3668558 1171
7619e7c7
AM		 1172 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1173 offset to the entry. */
1174 HOWTO (R_PPC_GOT_TPREL16,
1175 0, /* rightshift */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1177 16, /* bitsize */
1178 FALSE, /* pc_relative */
1179 0, /* bitpos */
1180 complain_overflow_signed, /* complain_on_overflow */
1181 ppc_elf_unhandled_reloc, /* special_function */
1182 "R_PPC_GOT_TPREL16", /* name */
1183 FALSE, /* partial_inplace */
1184 0, /* src_mask */
1185 0xffff, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1187
1188 /* Like GOT_TPREL16, but no overflow. */
1189 HOWTO (R_PPC_GOT_TPREL16_LO,
1190 0, /* rightshift */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 16, /* bitsize */
1193 FALSE, /* pc_relative */
1194 0, /* bitpos */
1195 complain_overflow_dont, /* complain_on_overflow */
1196 ppc_elf_unhandled_reloc, /* special_function */
1197 "R_PPC_GOT_TPREL16_LO", /* name */
1198 FALSE, /* partial_inplace */
1199 0, /* src_mask */
1200 0xffff, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1202
1203 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1204 HOWTO (R_PPC_GOT_TPREL16_HI,
1205 16, /* rightshift */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1207 16, /* bitsize */
1208 FALSE, /* pc_relative */
1209 0, /* bitpos */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc_elf_unhandled_reloc, /* special_function */
1212 "R_PPC_GOT_TPREL16_HI", /* name */
1213 FALSE, /* partial_inplace */
1214 0, /* src_mask */
1215 0xffff, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1217
1218 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1219 HOWTO (R_PPC_GOT_TPREL16_HA,
1220 16, /* rightshift */
1221 1, /* size (0 = byte, 1 = short, 2 = long) */
1222 16, /* bitsize */
1223 FALSE, /* pc_relative */
1224 0, /* bitpos */
1225 complain_overflow_dont, /* complain_on_overflow */
1226 ppc_elf_unhandled_reloc, /* special_function */
1227 "R_PPC_GOT_TPREL16_HA", /* name */
1228 FALSE, /* partial_inplace */
1229 0, /* src_mask */
1230 0xffff, /* dst_mask */
1231 FALSE), /* pcrel_offset */
1232
1233 /* The remaining relocs are from the Embedded ELF ABI, and are not
1234 in the SVR4 ELF ABI. */
1235
1236 /* 32 bit value resulting from the addend minus the symbol. */
1237 HOWTO (R_PPC_EMB_NADDR32, /* type */
1238 0, /* rightshift */
1239 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 32, /* bitsize */
1241 FALSE, /* pc_relative */
1242 0, /* bitpos */
1243 complain_overflow_bitfield, /* complain_on_overflow */
1244 bfd_elf_generic_reloc, /* special_function */
1245 "R_PPC_EMB_NADDR32", /* name */
1246 FALSE, /* partial_inplace */
1247 0, /* src_mask */
1248 0xffffffff, /* dst_mask */
1249 FALSE), /* pcrel_offset */
1250
1251 /* 16 bit value resulting from the addend minus the symbol. */
1252 HOWTO (R_PPC_EMB_NADDR16, /* type */
1253 0, /* rightshift */
1254 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 16, /* bitsize */
1256 FALSE, /* pc_relative */
1257 0, /* bitpos */
1258 complain_overflow_bitfield, /* complain_on_overflow */
1259 bfd_elf_generic_reloc, /* special_function */
1260 "R_PPC_EMB_NADDR16", /* name */
1261 FALSE, /* partial_inplace */
1262 0, /* src_mask */
1263 0xffff, /* dst_mask */
1264 FALSE), /* pcrel_offset */
1265
1266 /* 16 bit value resulting from the addend minus the symbol. */
1267 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1268 0, /* rightshift */
1269 1, /* size (0 = byte, 1 = short, 2 = long) */
1270 16, /* bitsize */
1271 FALSE, /* pc_relative */
1272 0, /* bitpos */
1273 complain_overflow_dont,/* complain_on_overflow */
1274 bfd_elf_generic_reloc, /* special_function */
1275 "R_PPC_EMB_ADDR16_LO", /* name */
1276 FALSE, /* partial_inplace */
1277 0, /* src_mask */
1278 0xffff, /* dst_mask */
1279 FALSE), /* pcrel_offset */
1280
1281 /* The high order 16 bits of the addend minus the symbol. */
1282 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1283 16, /* rightshift */
1284 1, /* size (0 = byte, 1 = short, 2 = long) */
1285 16, /* bitsize */
1286 FALSE, /* pc_relative */
1287 0, /* bitpos */
1288 complain_overflow_dont, /* complain_on_overflow */
1289 bfd_elf_generic_reloc, /* special_function */
1290 "R_PPC_EMB_NADDR16_HI", /* name */
1291 FALSE, /* partial_inplace */
1292 0, /* src_mask */
1293 0xffff, /* dst_mask */
1294 FALSE), /* pcrel_offset */
1295
1296 /* The high order 16 bits of the result of the addend minus the address,
1297 plus 1 if the contents of the low 16 bits, treated as a signed number,
1298 is negative. */
1299 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1300 16, /* rightshift */
1301 1, /* size (0 = byte, 1 = short, 2 = long) */
1302 16, /* bitsize */
1303 FALSE, /* pc_relative */
1304 0, /* bitpos */
1305 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM		 1306 ppc_elf_addr16_ha_reloc, /* special_function */
1307 "R_PPC_EMB_NADDR16_HA", /* name */
1308 FALSE, /* partial_inplace */
1309 0, /* src_mask */
1310 0xffff, /* dst_mask */
1311 FALSE), /* pcrel_offset */
1312
1313 /* 16 bit value resulting from allocating a 4 byte word to hold an
1314 address in the .sdata section, and returning the offset from
1315 _SDA_BASE_ for that relocation. */
1316 HOWTO (R_PPC_EMB_SDAI16, /* type */
1317 0, /* rightshift */
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1319 16, /* bitsize */
1320 FALSE, /* pc_relative */
1321 0, /* bitpos */
bd6c6e2b 1322 complain_overflow_signed, /* complain_on_overflow */
25dbc73a
AM		 1323 bfd_elf_generic_reloc, /* special_function */
1324 "R_PPC_EMB_SDAI16", /* name */
1325 FALSE, /* partial_inplace */
1326 0, /* src_mask */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1329
1330 /* 16 bit value resulting from allocating a 4 byte word to hold an
1331 address in the .sdata2 section, and returning the offset from
1332 _SDA2_BASE_ for that relocation. */
1333 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1334 0, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
bd6c6e2b 1339 complain_overflow_signed, /* complain_on_overflow */
25dbc73a
AM		 1340 bfd_elf_generic_reloc, /* special_function */
1341 "R_PPC_EMB_SDA2I16", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1348 small data items. */
1349 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1350 0, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 16, /* bitsize */
1353 FALSE, /* pc_relative */
1354 0, /* bitpos */
1355 complain_overflow_signed, /* complain_on_overflow */
1356 bfd_elf_generic_reloc, /* special_function */
1357 "R_PPC_EMB_SDA2REL", /* name */
1358 FALSE, /* partial_inplace */
1359 0, /* src_mask */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1362
1363 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1364 signed offset from the appropriate base, and filling in the register
1365 field with the appropriate register (0, 2, or 13). */
1366 HOWTO (R_PPC_EMB_SDA21, /* type */
1367 0, /* rightshift */
1368 2, /* size (0 = byte, 1 = short, 2 = long) */
1369 16, /* bitsize */
1370 FALSE, /* pc_relative */
1371 0, /* bitpos */
1372 complain_overflow_signed, /* complain_on_overflow */
1373 bfd_elf_generic_reloc, /* special_function */
1374 "R_PPC_EMB_SDA21", /* name */
1375 FALSE, /* partial_inplace */
1376 0, /* src_mask */
1377 0xffff, /* dst_mask */
1378 FALSE), /* pcrel_offset */
1379
1380 /* Relocation not handled: R_PPC_EMB_MRKREF */
1381 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1382 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1383 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1384 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1385 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1386
1387 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1388 in the 16 bit signed offset from the appropriate base, and filling in the
1389 register field with the appropriate register (0, 2, or 13). */
1390 HOWTO (R_PPC_EMB_RELSDA, /* type */
1391 0, /* rightshift */
1392 1, /* size (0 = byte, 1 = short, 2 = long) */
1393 16, /* bitsize */
ddfd6795 1394 FALSE, /* pc_relative */
25dbc73a
AM		 1395 0, /* bitpos */
1396 complain_overflow_signed, /* complain_on_overflow */
1397 bfd_elf_generic_reloc, /* special_function */
1398 "R_PPC_EMB_RELSDA", /* name */
1399 FALSE, /* partial_inplace */
1400 0, /* src_mask */
1401 0xffff, /* dst_mask */
1402 FALSE), /* pcrel_offset */
1403
b9c361e0
JL		 1404 /* A relative 8 bit branch. */
1405 HOWTO (R_PPC_VLE_REL8, /* type */
1406 1, /* rightshift */
1407 1, /* size (0 = byte, 1 = short, 2 = long) */
1408 8, /* bitsize */
1409 TRUE, /* pc_relative */
1410 0, /* bitpos */
1411 complain_overflow_signed, /* complain_on_overflow */
1412 bfd_elf_generic_reloc, /* special_function */
1413 "R_PPC_VLE_REL8", /* name */
1414 FALSE, /* partial_inplace */
1415 0, /* src_mask */
1416 0xff, /* dst_mask */
1417 TRUE), /* pcrel_offset */
68ffbac6 1418
b9c361e0
JL		 1419 /* A relative 15 bit branch. */
1420 HOWTO (R_PPC_VLE_REL15, /* type */
1421 1, /* rightshift */
1422 2, /* size (0 = byte, 1 = short, 2 = long) */
1423 15, /* bitsize */
1424 TRUE, /* pc_relative */
1425 1, /* bitpos */
1426 complain_overflow_signed, /* complain_on_overflow */
1427 bfd_elf_generic_reloc, /* special_function */
1428 "R_PPC_VLE_REL15", /* name */
1429 FALSE, /* partial_inplace */
1430 0, /* src_mask */
1431 0xfe, /* dst_mask */
1432 TRUE), /* pcrel_offset */
1433
68ffbac6 1434 /* A relative 24 bit branch. */
b9c361e0
JL		 1435 HOWTO (R_PPC_VLE_REL24, /* type */
1436 1, /* rightshift */
1437 2, /* size (0 = byte, 1 = short, 2 = long) */
1438 24, /* bitsize */
1439 TRUE, /* pc_relative */
1440 1, /* bitpos */
1441 complain_overflow_signed, /* complain_on_overflow */
1442 bfd_elf_generic_reloc, /* special_function */
1443 "R_PPC_VLE_REL24", /* name */
1444 FALSE, /* partial_inplace */
1445 0, /* src_mask */
1446 0x1fffffe, /* dst_mask */
1447 TRUE), /* pcrel_offset */
1448
1449 /* The 16 LSBS in split16a format. */
1450 HOWTO (R_PPC_VLE_LO16A, /* type */
1451 0, /* rightshift */
1452 2, /* size (0 = byte, 1 = short, 2 = long) */
1453 32, /* bitsize */
bdaacd3a 1454 FALSE, /* pc_relative */
b9c361e0
JL		 1455 0, /* bitpos */
1456 complain_overflow_bitfield, /* complain_on_overflow */
1457 bfd_elf_generic_reloc, /* special_function */
1458 "R_PPC_VLE_LO16A", /* name */
1459 FALSE, /* partial_inplace */
1460 0, /* src_mask */
bdaacd3a 1461 0x1f007ff, /* dst_mask */
b9c361e0
JL		 1462 FALSE), /* pcrel_offset */
1463
1464 /* The 16 LSBS in split16d format. */
1465 HOWTO (R_PPC_VLE_LO16D, /* type */
1466 0, /* rightshift */
1467 2, /* size (0 = byte, 1 = short, 2 = long) */
1468 32, /* bitsize */
1469 FALSE, /* pc_relative */
1470 0, /* bitpos */
1471 complain_overflow_bitfield, /* complain_on_overflow */
1472 bfd_elf_generic_reloc, /* special_function */
1473 "R_PPC_VLE_LO16D", /* name */
1474 FALSE, /* partial_inplace */
1475 0, /* src_mask */
1476 0x1f07ff, /* dst_mask */
1477 FALSE), /* pcrel_offset */
1478
1479 /* Bits 16-31 split16a format. */
1480 HOWTO (R_PPC_VLE_HI16A, /* type */
1481 0, /* rightshift */
1482 2, /* size (0 = byte, 1 = short, 2 = long) */
1483 32, /* bitsize */
1484 FALSE, /* pc_relative */
1485 0, /* bitpos */
1486 complain_overflow_bitfield, /* complain_on_overflow */
1487 bfd_elf_generic_reloc, /* special_function */
1488 "R_PPC_VLE_HI16A", /* name */
1489 FALSE, /* partial_inplace */
1490 0, /* src_mask */
bdaacd3a 1491 0x1f007ff, /* dst_mask */
b9c361e0
JL		 1492 FALSE), /* pcrel_offset */
1493
1494 /* Bits 16-31 split16d format. */
1495 HOWTO (R_PPC_VLE_HI16D, /* type */
1496 0, /* rightshift */
1497 2, /* size (0 = byte, 1 = short, 2 = long) */
1498 32, /* bitsize */
1499 FALSE, /* pc_relative */
1500 0, /* bitpos */
1501 complain_overflow_bitfield, /* complain_on_overflow */
1502 bfd_elf_generic_reloc, /* special_function */
1503 "R_PPC_VLE_HI16D", /* name */
1504 FALSE, /* partial_inplace */
1505 0, /* src_mask */
1506 0x1f07ff, /* dst_mask */
1507 FALSE), /* pcrel_offset */
1508
1509 /* Bits 16-31 (High Adjusted) in split16a format. */
1510 HOWTO (R_PPC_VLE_HA16A, /* type */
1511 0, /* rightshift */
1512 2, /* size (0 = byte, 1 = short, 2 = long) */
1513 32, /* bitsize */
1514 FALSE, /* pc_relative */
1515 0, /* bitpos */
1516 complain_overflow_bitfield, /* complain_on_overflow */
1517 bfd_elf_generic_reloc, /* special_function */
1518 "R_PPC_VLE_HA16A", /* name */
1519 FALSE, /* partial_inplace */
1520 0, /* src_mask */
bdaacd3a 1521 0x1f007ff, /* dst_mask */
b9c361e0
JL		 1522 FALSE), /* pcrel_offset */
1523
1524 /* Bits 16-31 (High Adjusted) in split16d format. */
1525 HOWTO (R_PPC_VLE_HA16D, /* type */
1526 0, /* rightshift */
1527 2, /* size (0 = byte, 1 = short, 2 = long) */
1528 32, /* bitsize */
1529 FALSE, /* pc_relative */
1530 0, /* bitpos */
1531 complain_overflow_bitfield, /* complain_on_overflow */
1532 bfd_elf_generic_reloc, /* special_function */
1533 "R_PPC_VLE_HA16D", /* name */
1534 FALSE, /* partial_inplace */
1535 0, /* src_mask */
1536 0x1f07ff, /* dst_mask */
1537 FALSE), /* pcrel_offset */
1538
1539 /* This reloc does nothing. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 32, /* bitsize */
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_bitfield, /* complain_on_overflow */
1547 bfd_elf_generic_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* This reloc does nothing. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 32, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_bitfield, /* complain_on_overflow */
1562 bfd_elf_generic_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
1566 0, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 32, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_bitfield, /* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
bdaacd3a 1581 0x1f007ff, /* dst_mask */
b9c361e0
JL		 1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 /* This reloc does nothing. */
1586 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 0, /* rightshift */
1588 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 32, /* bitsize */
1590 FALSE, /* pc_relative */
1591 0, /* bitpos */
1592 complain_overflow_bitfield, /* complain_on_overflow */
1593 bfd_elf_generic_reloc, /* special_function */
1594 "R_PPC_VLE_SDAREL_LO16D", /* name */
1595 FALSE, /* partial_inplace */
1596 0, /* src_mask */
1597 0x1f07ff, /* dst_mask */
1598 FALSE), /* pcrel_offset */
1599
1600 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1601 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1602 0, /* rightshift */
1603 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 32, /* bitsize */
1605 FALSE, /* pc_relative */
1606 0, /* bitpos */
1607 complain_overflow_bitfield, /* complain_on_overflow */
1608 bfd_elf_generic_reloc, /* special_function */
1609 "R_PPC_VLE_SDAREL_HI16A", /* name */
1610 FALSE, /* partial_inplace */
1611 0, /* src_mask */
bdaacd3a 1612 0x1f007ff, /* dst_mask */
b9c361e0
JL		 1613 FALSE), /* pcrel_offset */
1614
1615 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1616 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1617 0, /* rightshift */
1618 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 32, /* bitsize */
1620 FALSE, /* pc_relative */
1621 0, /* bitpos */
1622 complain_overflow_bitfield, /* complain_on_overflow */
1623 bfd_elf_generic_reloc, /* special_function */
1624 "R_PPC_VLE_SDAREL_HI16D", /* name */
1625 FALSE, /* partial_inplace */
1626 0, /* src_mask */
1627 0x1f07ff, /* dst_mask */
1628 FALSE), /* pcrel_offset */
1629
1630 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1631 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1632 0, /* rightshift */
1633 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 32, /* bitsize */
1635 FALSE, /* pc_relative */
1636 0, /* bitpos */
1637 complain_overflow_bitfield, /* complain_on_overflow */
1638 bfd_elf_generic_reloc, /* special_function */
1639 "R_PPC_VLE_SDAREL_HA16A", /* name */
1640 FALSE, /* partial_inplace */
1641 0, /* src_mask */
bdaacd3a 1642 0x1f007ff, /* dst_mask */
b9c361e0
JL		 1643 FALSE), /* pcrel_offset */
1644
1645 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1646 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1647 0, /* rightshift */
1648 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 32, /* bitsize */
1650 FALSE, /* pc_relative */
1651 0, /* bitpos */
1652 complain_overflow_bitfield, /* complain_on_overflow */
1653 bfd_elf_generic_reloc, /* special_function */
1654 "R_PPC_VLE_SDAREL_HA16D", /* name */
1655 FALSE, /* partial_inplace */
1656 0, /* src_mask */
1657 0x1f07ff, /* dst_mask */
1658 FALSE), /* pcrel_offset */
1659
e054468f
AM		 1660 HOWTO (R_PPC_IRELATIVE, /* type */
1661 0, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 32, /* bitsize */
1664 FALSE, /* pc_relative */
1665 0, /* bitpos */
1666 complain_overflow_bitfield, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 "R_PPC_IRELATIVE", /* name */
1669 FALSE, /* partial_inplace */
1670 0, /* src_mask */
1671 0xffffffff, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1673
d7128ce4
AM		 1674 /* A 16 bit relative relocation. */
1675 HOWTO (R_PPC_REL16, /* type */
1676 0, /* rightshift */
1677 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 16, /* bitsize */
1679 TRUE, /* pc_relative */
1680 0, /* bitpos */
1681 complain_overflow_bitfield, /* complain_on_overflow */
1682 bfd_elf_generic_reloc, /* special_function */
1683 "R_PPC_REL16", /* name */
1684 FALSE, /* partial_inplace */
1685 0, /* src_mask */
1686 0xffff, /* dst_mask */
1687 TRUE), /* pcrel_offset */
1688
1689 /* A 16 bit relative relocation without overflow. */
1690 HOWTO (R_PPC_REL16_LO, /* type */
1691 0, /* rightshift */
1692 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 16, /* bitsize */
1694 TRUE, /* pc_relative */
1695 0, /* bitpos */
1696 complain_overflow_dont,/* complain_on_overflow */
1697 bfd_elf_generic_reloc, /* special_function */
1698 "R_PPC_REL16_LO", /* name */
1699 FALSE, /* partial_inplace */
1700 0, /* src_mask */
1701 0xffff, /* dst_mask */
1702 TRUE), /* pcrel_offset */
1703
1704 /* The high order 16 bits of a relative address. */
1705 HOWTO (R_PPC_REL16_HI, /* type */
1706 16, /* rightshift */
1707 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 16, /* bitsize */
1709 TRUE, /* pc_relative */
1710 0, /* bitpos */
1711 complain_overflow_dont, /* complain_on_overflow */
1712 bfd_elf_generic_reloc, /* special_function */
1713 "R_PPC_REL16_HI", /* name */
1714 FALSE, /* partial_inplace */
1715 0, /* src_mask */
1716 0xffff, /* dst_mask */
1717 TRUE), /* pcrel_offset */
1718
1719 /* The high order 16 bits of a relative address, plus 1 if the contents of
1720 the low 16 bits, treated as a signed number, is negative. */
1721 HOWTO (R_PPC_REL16_HA, /* type */
1722 16, /* rightshift */
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 16, /* bitsize */
1725 TRUE, /* pc_relative */
1726 0, /* bitpos */
1727 complain_overflow_dont, /* complain_on_overflow */
1728 ppc_elf_addr16_ha_reloc, /* special_function */
1729 "R_PPC_REL16_HA", /* name */
1730 FALSE, /* partial_inplace */
1731 0, /* src_mask */
1732 0xffff, /* dst_mask */
1733 TRUE), /* pcrel_offset */
1734
25dbc73a
AM		 1735 /* GNU extension to record C++ vtable hierarchy. */
1736 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1737 0, /* rightshift */
1738 0, /* size (0 = byte, 1 = short, 2 = long) */
1739 0, /* bitsize */
1740 FALSE, /* pc_relative */
1741 0, /* bitpos */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 NULL, /* special_function */
1744 "R_PPC_GNU_VTINHERIT", /* name */
1745 FALSE, /* partial_inplace */
1746 0, /* src_mask */
1747 0, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1749
1750 /* GNU extension to record C++ vtable member usage. */
1751 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1752 0, /* rightshift */
1753 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 0, /* bitsize */
1755 FALSE, /* pc_relative */
1756 0, /* bitpos */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 NULL, /* special_function */
1759 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM		 1760 FALSE, /* partial_inplace */
1761 0, /* src_mask */
25dbc73a 1762 0, /* dst_mask */
7619e7c7
AM		 1763 FALSE), /* pcrel_offset */
1764
25dbc73a
AM		 1765 /* Phony reloc to handle AIX style TOC entries. */
1766 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM		 1767 0, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 16, /* bitsize */
1770 FALSE, /* pc_relative */
1771 0, /* bitpos */
25dbc73a 1772 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1773 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1774 "R_PPC_TOC16", /* name */
7619e7c7
AM		 1775 FALSE, /* partial_inplace */
1776 0, /* src_mask */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
25dbc73a
AM		 1779};
1780\f
1781/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1782
1783static void
1784ppc_elf_howto_init (void)
1785{
1786 unsigned int i, type;
1787
1788 for (i = 0;
1789 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1790 i++)
1791 {
1792 type = ppc_elf_howto_raw[i].type;
1793 if (type >= (sizeof (ppc_elf_howto_table)
1794 / sizeof (ppc_elf_howto_table[0])))
1795 abort ();
1796 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1797 }
1798}
1799
1800static reloc_howto_type *
1801ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1802 bfd_reloc_code_real_type code)
1803{
1804 enum elf_ppc_reloc_type r;
1805
1806 /* Initialize howto table if not already done. */
1807 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1808 ppc_elf_howto_init ();
1809
1810 switch (code)
1811 {
1812 default:
1813 return NULL;
1814
1815 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1816 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1817 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1818 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1819 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1820 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM		 1821 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1822 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1823 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1824 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1825 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1826 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1827 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1828 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1829 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1830 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1831 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1832 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1833 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM		 1834 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1835 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1836 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1837 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1838 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1839 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1840 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1841 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1842 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1843 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1844 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM		 1845 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1846 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1847 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1848 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1849 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1850 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1851 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM		 1852 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1853 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1854 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1855 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1856 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM		 1857 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1858 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM		 1859 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1860 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1861 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1862 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1863 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1864 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM		 1865 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1866 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1867 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1868 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1869 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1870 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1871 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM		 1872 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1873 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1874 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1875 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1876 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1877 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1878 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1879 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1880 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1881 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1882 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1883 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1884 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1885 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1886 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1887 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1888 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1889 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1890 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1891 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1892 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1893 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1894 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1895 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1896 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1897 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1898 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1899 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1900 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1901 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1902 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1903 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1904 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1905 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1906 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1907 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL		 1908 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1909 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1910 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1911 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1912 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1913 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1914 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1915 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1916 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1917 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1918 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1919 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1920 r = R_PPC_VLE_SDAREL_LO16A;
1921 break;
1922 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1923 r = R_PPC_VLE_SDAREL_LO16D;
1924 break;
1925 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1926 r = R_PPC_VLE_SDAREL_HI16A;
1927 break;
1928 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1929 r = R_PPC_VLE_SDAREL_HI16D;
1930 break;
1931 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1932 r = R_PPC_VLE_SDAREL_HA16A;
1933 break;
1934 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1935 r = R_PPC_VLE_SDAREL_HA16D;
1936 break;
d7128ce4
AM		 1937 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1938 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1939 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1940 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM		 1941 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1942 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1943 }
1944
1945 return ppc_elf_howto_table[r];
1946};
1947
157090f7
AM		 1948static reloc_howto_type *
1949ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1950 const char *r_name)
1951{
1952 unsigned int i;
1953
1954 for (i = 0;
1955 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1956 i++)
1957 if (ppc_elf_howto_raw[i].name != NULL
1958 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1959 return &ppc_elf_howto_raw[i];
1960
1961 return NULL;
1962}
1963
25dbc73a
AM		 1964/* Set the howto pointer for a PowerPC ELF reloc. */
1965
1966static void
1967ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1968 arelent *cache_ptr,
1969 Elf_Internal_Rela *dst)
1970{
1971 /* Initialize howto table if not already done. */
1972 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1973 ppc_elf_howto_init ();
1974
1975 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1976 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM		 1977
1978 /* Just because the above assert didn't trigger doesn't mean that
1979 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1980 if (!cache_ptr->howto)
1981 {
1982 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1983 abfd, ELF32_R_TYPE (dst->r_info));
1984 bfd_set_error (bfd_error_bad_value);
1985
1986 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1987 }
25dbc73a
AM		 1988}
1989
d7128ce4 1990/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM		 1991
1992static bfd_reloc_status_type
1993ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1994 arelent *reloc_entry,
1995 asymbol *symbol,
1996 void *data ATTRIBUTE_UNUSED,
1997 asection *input_section,
1998 bfd *output_bfd,
1999 char **error_message ATTRIBUTE_UNUSED)
2000{
2001 bfd_vma relocation;
2002
2003 if (output_bfd != NULL)
2004 {
2005 reloc_entry->address += input_section->output_offset;
2006 return bfd_reloc_ok;
2007 }
2008
2009 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2010 return bfd_reloc_outofrange;
2011
2012 if (bfd_is_com_section (symbol->section))
2013 relocation = 0;
2014 else
2015 relocation = symbol->value;
2016
2017 relocation += symbol->section->output_section->vma;
2018 relocation += symbol->section->output_offset;
2019 relocation += reloc_entry->addend;
d7128ce4
AM		 2020 if (reloc_entry->howto->pc_relative)
2021 relocation -= reloc_entry->address;
25dbc73a
AM		 2022
2023 reloc_entry->addend += (relocation & 0x8000) << 1;
2024
2025 return bfd_reloc_continue;
2026}
2027
2028static bfd_reloc_status_type
2029ppc_elf_unhandled_reloc (bfd *abfd,
2030 arelent *reloc_entry,
2031 asymbol *symbol,
2032 void *data,
2033 asection *input_section,
2034 bfd *output_bfd,
2035 char **error_message)
2036{
2037 /* If this is a relocatable link (output_bfd test tells us), just
2038 call the generic function. Any adjustment will be done at final
2039 link time. */
2040 if (output_bfd != NULL)
2041 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2042 input_section, output_bfd, error_message);
2043
2044 if (error_message != NULL)
2045 {
2046 static char buf[60];
2047 sprintf (buf, _("generic linker can't handle %s"),
2048 reloc_entry->howto->name);
2049 *error_message = buf;
2050 }
2051 return bfd_reloc_dangerous;
2052}
2053\f
2054/* Sections created by the linker. */
2055
2056typedef struct elf_linker_section
2057{
c9a2f333 2058 /* Pointer to the bfd section. */
25dbc73a 2059 asection *section;
c9a2f333
AM		 2060 /* Section name. */
2061 const char *name;
2062 /* Associated bss section name. */
2063 const char *bss_name;
2064 /* Associated symbol name. */
2065 const char *sym_name;
046183de
AM		 2066 /* Associated symbol. */
2067 struct elf_link_hash_entry *sym;
25dbc73a
AM		 2068} elf_linker_section_t;
2069
2070/* Linked list of allocated pointer entries. This hangs off of the
2071 symbol lists, and provides allows us to return different pointers,
2072 based on different addend's. */
2073
2074typedef struct elf_linker_section_pointers
2075{
2076 /* next allocated pointer for this symbol */
2077 struct elf_linker_section_pointers *next;
2078 /* offset of pointer from beginning of section */
2079 bfd_vma offset;
2080 /* addend used */
2081 bfd_vma addend;
2082 /* which linker section this is */
2083 elf_linker_section_t *lsect;
25dbc73a
AM		 2084} elf_linker_section_pointers_t;
2085
2086struct ppc_elf_obj_tdata
2087{
2088 struct elf_obj_tdata elf;
2089
2090 /* A mapping from local symbols to offsets into the various linker
2091 sections added. This is index by the symbol index. */
2092 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM		 2093
2094 /* Flags used to auto-detect plt type. */
2095 unsigned int makes_plt_call : 1;
2096 unsigned int has_rel16 : 1;
25dbc73a
AM		 2097};
2098
2099#define ppc_elf_tdata(bfd) \
2100 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2101
25dbc73a
AM		 2102#define elf_local_ptr_offsets(bfd) \
2103 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2104
0c8d6e5c
AM		 2105#define is_ppc_elf(bfd) \
2106 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2107 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2108
25dbc73a 2109/* Override the generic function because we store some extras. */
7619e7c7 2110
25dbc73a
AM		 2111static bfd_boolean
2112ppc_elf_mkobject (bfd *abfd)
2113{
0ffa91dd 2114 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2115 PPC32_ELF_DATA);
25dbc73a 2116}
7619e7c7 2117
25dbc73a
AM		 2118/* Fix bad default arch selected for a 32 bit input bfd when the
2119 default is 64 bit. */
7619e7c7 2120
25dbc73a
AM		 2121static bfd_boolean
2122ppc_elf_object_p (bfd *abfd)
2123{
2124 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2125 {
2126 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2127
25dbc73a
AM		 2128 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2129 {
2130 /* Relies on arch after 64 bit default being 32 bit default. */
2131 abfd->arch_info = abfd->arch_info->next;
2132 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2133 }
2134 }
2135 return TRUE;
2136}
7619e7c7 2137
25dbc73a 2138/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2139
25dbc73a
AM		 2140static bfd_boolean
2141ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2142{
2143 BFD_ASSERT (!elf_flags_init (abfd)
2144 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2145
25dbc73a
AM		 2146 elf_elfheader (abfd)->e_flags = flags;
2147 elf_flags_init (abfd) = TRUE;
2148 return TRUE;
2149}
2150
25dbc73a 2151/* Support for core dump NOTE sections. */
deaaf2f3 2152
b34976b6 2153static bfd_boolean
25dbc73a 2154ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2155{
25dbc73a
AM		 2156 int offset;
2157 unsigned int size;
252b5132 2158
25dbc73a
AM		 2159 switch (note->descsz)
2160 {
2161 default:
2162 return FALSE;
252b5132 2163
25dbc73a
AM		 2164 case 268: /* Linux/PPC. */
2165 /* pr_cursig */
2166 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2167
25dbc73a 2168 /* pr_pid */
261b8d08 2169 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2170
25dbc73a
AM		 2171 /* pr_reg */
2172 offset = 72;
2173 size = 192;
deaaf2f3 2174
25dbc73a
AM		 2175 break;
2176 }
deaaf2f3 2177
25dbc73a
AM		 2178 /* Make a ".reg/999" section. */
2179 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2180 size, note->descpos + offset);
2181}
252b5132 2182
25dbc73a
AM		 2183static bfd_boolean
2184ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2185{
2186 switch (note->descsz)
deaaf2f3 2187 {
25dbc73a
AM		 2188 default:
2189 return FALSE;
deaaf2f3 2190
25dbc73a 2191 case 128: /* Linux/PPC elf_prpsinfo. */
bc989cdc
JK		 2192 elf_tdata (abfd)->core_pid
2193 = bfd_get_32 (abfd, note->descdata + 16);
25dbc73a
AM		 2194 elf_tdata (abfd)->core_program
2195 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2196 elf_tdata (abfd)->core_command
2197 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2198 }
9abc968f 2199
25dbc73a
AM		 2200 /* Note that for some reason, a spurious space is tacked
2201 onto the end of the args in some (at least one anyway)
2202 implementations, so strip it off if it exists. */
70bccea4 2203
25dbc73a
AM		 2204 {
2205 char *command = elf_tdata (abfd)->core_command;
2206 int n = strlen (command);
70bccea4 2207
25dbc73a
AM		 2208 if (0 < n && command[n - 1] == ' ')
2209 command[n - 1] = '\0';
2210 }
deaaf2f3 2211
25dbc73a
AM		 2212 return TRUE;
2213}
deaaf2f3 2214
183e98be
AM		 2215static char *
2216ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2217{
2218 switch (note_type)
2219 {
2220 default:
2221 return NULL;
2222
2223 case NT_PRPSINFO:
2224 {
2225 char data[128];
2226 va_list ap;
2227
2228 va_start (ap, note_type);
75cd47ed 2229 memset (data, 0, sizeof (data));
183e98be
AM		 2230 strncpy (data + 32, va_arg (ap, const char *), 16);
2231 strncpy (data + 48, va_arg (ap, const char *), 80);
2232 va_end (ap);
2233 return elfcore_write_note (abfd, buf, bufsiz,
2234 "CORE", note_type, data, sizeof (data));
2235 }
2236
2237 case NT_PRSTATUS:
2238 {
2239 char data[268];
2240 va_list ap;
2241 long pid;
2242 int cursig;
2243 const void *greg;
2244
2245 va_start (ap, note_type);
2246 memset (data, 0, 72);
2247 pid = va_arg (ap, long);
2248 bfd_put_32 (abfd, pid, data + 24);
2249 cursig = va_arg (ap, int);
2250 bfd_put_16 (abfd, cursig, data + 12);
2251 greg = va_arg (ap, const void *);
2252 memcpy (data + 72, greg, 192);
2253 memset (data + 264, 0, 4);
2254 va_end (ap);
2255 return elfcore_write_note (abfd, buf, bufsiz,
2256 "CORE", note_type, data, sizeof (data));
2257 }
2258 }
2259}
2260
b9c361e0 2261static flagword
68ffbac6 2262ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL		 2263{
2264
2265 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2266 return SHF_PPC_VLE;
2267
2268 return 0;
2269}
2270
2271/* Add the VLE flag if required. */
2272
2273bfd_boolean
2274ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2275{
2276 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2277 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2278 shdr->sh_flags |= SHF_PPC_VLE;
2279
2280 return TRUE;
2281}
2282
25dbc73a
AM		 2283/* Return address for Ith PLT stub in section PLT, for relocation REL
2284 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2285
25dbc73a
AM		 2286static bfd_vma
2287ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2288 const asection *plt ATTRIBUTE_UNUSED,
2289 const arelent *rel)
2290{
2291 return rel->address;
2292}
deaaf2f3 2293
25dbc73a 2294/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L		 2295 is called when bfd_section_from_shdr finds a section with an unknown
2296 type. */
deaaf2f3 2297
25dbc73a 2298static bfd_boolean
6dc132d9
L		 2299ppc_elf_section_from_shdr (bfd *abfd,
2300 Elf_Internal_Shdr *hdr,
2301 const char *name,
2302 int shindex)
25dbc73a
AM		 2303{
2304 asection *newsect;
2305 flagword flags;
d1c6de6f 2306
6dc132d9 2307 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2308 return FALSE;
deaaf2f3 2309
25dbc73a
AM		 2310 newsect = hdr->bfd_section;
2311 flags = bfd_get_section_flags (abfd, newsect);
2312 if (hdr->sh_flags & SHF_EXCLUDE)
2313 flags |= SEC_EXCLUDE;
9abc968f 2314
25dbc73a
AM		 2315 if (hdr->sh_type == SHT_ORDERED)
2316 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2317
25dbc73a
AM		 2318 bfd_set_section_flags (abfd, newsect, flags);
2319 return TRUE;
2320}
2321
2322/* Set up any other section flags and such that may be necessary. */
2323
2324static bfd_boolean
2325ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2326 Elf_Internal_Shdr *shdr,
2327 asection *asect)
2328{
25dbc73a
AM		 2329 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2330 shdr->sh_type = SHT_ORDERED;
2331
2332 return TRUE;
2333}
2334
2335/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2336 need to bump up the number of section headers. */
2337
2338static int
a6b96beb
AM		 2339ppc_elf_additional_program_headers (bfd *abfd,
2340 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM		 2341{
2342 asection *s;
2343 int ret = 0;
d1c6de6f 2344
25dbc73a
AM		 2345 s = bfd_get_section_by_name (abfd, ".sbss2");
2346 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2347 ++ret;
d1c6de6f 2348
25dbc73a
AM		 2349 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2350 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2351 ++ret;
deaaf2f3 2352
25dbc73a
AM		 2353 return ret;
2354}
deaaf2f3 2355
68ffbac6 2356/* Modify the segment map for VLE executables. */
b9c361e0
JL		 2357
2358bfd_boolean
2359ppc_elf_modify_segment_map (bfd *abfd,
2360 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2361{
2362 struct elf_segment_map *m, *n;
2363 bfd_size_type amt;
2364 unsigned int j, k;
2365 bfd_boolean sect0_vle, sectj_vle;
2366
2367 /* At this point in the link, output sections have already been sorted by
2368 LMA and assigned to segments. All that is left to do is to ensure
2369 there is no mixing of VLE & non-VLE sections in a text segment.
2370 If we find that case, we split the segment.
2371 We maintain the original output section order. */
2372
2373 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2374 {
2375 if (m->count == 0)
2376 continue;
2377
94caa966 2378 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
b9c361e0
JL		 2379 for (j = 1; j < m->count; ++j)
2380 {
94caa966
AM		 2381 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2382
2383 if (sectj_vle != sect0_vle)
b9c361e0
JL		 2384 break;
2385 }
2386 if (j >= m->count)
2387 continue;
2388
b9c361e0
JL		 2389 /* sections 0..j-1 stay in this (current) segment,
2390 the remainder are put in a new segment.
2391 The scan resumes with the new segment. */
2392
2393 /* Fix the new segment. */
2394 amt = sizeof (struct elf_segment_map);
2395 amt += (m->count - j - 1) * sizeof (asection *);
2396 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2397 if (n == NULL)
2398 return FALSE;
2399
2400 n->p_type = PT_LOAD;
2401 n->p_flags = PF_X | PF_R;
2402 if (sectj_vle)
2403 n->p_flags |= PF_PPC_VLE;
2404 n->count = m->count - j;
2405 for (k = 0; k < n->count; ++k)
2406 {
2407 n->sections[k] = m->sections[j+k];
2408 m->sections[j+k] = NULL;
2409 }
2410 n->next = m->next;
2411 m->next = n;
2412
2413 /* Fix the current segment */
2414 m->count = j;
2415 }
2416
2417 return TRUE;
2418}
2419
25dbc73a
AM		 2420/* Add extra PPC sections -- Note, for now, make .sbss2 and
2421 .PPC.EMB.sbss0 a normal section, and not a bss section so
2422 that the linker doesn't crater when trying to make more than
2423 2 sections. */
e656e369 2424
b35d266b 2425static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2426{
0112cd26
NC		 2427 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2428 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2429 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2430 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2431 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2432 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2433 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2434 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2435 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2436 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2437};
2438
551b43fd
AM		 2439/* This is what we want for new plt/got. */
2440static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2441 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM		 2442
2443static const struct bfd_elf_special_section *
2444ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2445{
b35d266b 2446 const struct bfd_elf_special_section *ssect;
551b43fd
AM		 2447
2448 /* See if this is one of the special sections. */
2449 if (sec->name == NULL)
2450 return NULL;
2451
2452 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2453 sec->use_rela_p);
2454 if (ssect != NULL)
2455 {
2456 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2457 ssect = &ppc_alt_plt;
2458 return ssect;
2459 }
2460
2461 return _bfd_elf_get_sec_type_attr (abfd, sec);
2462}
25dbc73a
AM		 2463\f
2464/* Very simple linked list structure for recording apuinfo values. */
2465typedef struct apuinfo_list
2466{
2467 struct apuinfo_list *next;
2468 unsigned long value;
2469}
2470apuinfo_list;
e656e369 2471
25dbc73a 2472static apuinfo_list *head;
f2faa800 2473static bfd_boolean apuinfo_set;
deaaf2f3 2474
25dbc73a
AM		 2475static void
2476apuinfo_list_init (void)
2477{
2478 head = NULL;
f2faa800 2479 apuinfo_set = FALSE;
25dbc73a 2480}
9abc968f 2481
25dbc73a
AM		 2482static void
2483apuinfo_list_add (unsigned long value)
2484{
2485 apuinfo_list *entry = head;
deaaf2f3 2486
25dbc73a
AM		 2487 while (entry != NULL)
2488 {
2489 if (entry->value == value)
2490 return;
2491 entry = entry->next;
2492 }
b4a38de6 2493
25dbc73a
AM		 2494 entry = bfd_malloc (sizeof (* entry));
2495 if (entry == NULL)
2496 return;
e656e369 2497
25dbc73a
AM		 2498 entry->value = value;
2499 entry->next = head;
2500 head = entry;
2501}
9abc968f 2502
25dbc73a
AM		 2503static unsigned
2504apuinfo_list_length (void)
2505{
2506 apuinfo_list *entry;
2507 unsigned long count;
9abc968f 2508
25dbc73a
AM		 2509 for (entry = head, count = 0;
2510 entry;
2511 entry = entry->next)
2512 ++ count;
e656e369 2513
25dbc73a
AM		 2514 return count;
2515}
eea6121a 2516
25dbc73a
AM		 2517static inline unsigned long
2518apuinfo_list_element (unsigned long number)
2519{
2520 apuinfo_list * entry;
e656e369 2521
25dbc73a
AM		 2522 for (entry = head;
2523 entry && number --;
2524 entry = entry->next)
2525 ;
252b5132 2526
25dbc73a
AM		 2527 return entry ? entry->value : 0;
2528}
2529
2530static void
2531apuinfo_list_finish (void)
2532{
2533 apuinfo_list *entry;
2534
2535 for (entry = head; entry;)
252b5132 2536 {
25dbc73a
AM		 2537 apuinfo_list *next = entry->next;
2538 free (entry);
2539 entry = next;
2540 }
9abc968f 2541
25dbc73a
AM		 2542 head = NULL;
2543}
9abc968f 2544
25dbc73a
AM		 2545#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2546#define APUINFO_LABEL "APUinfo"
9abc968f 2547
25dbc73a
AM		 2548/* Scan the input BFDs and create a linked list of
2549 the APUinfo values that will need to be emitted. */
9abc968f 2550
25dbc73a
AM		 2551static void
2552ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2553{
2554 bfd *ibfd;
2555 asection *asec;
deddc40b
NS		 2556 char *buffer = NULL;
2557 bfd_size_type largest_input_size = 0;
25dbc73a 2558 unsigned i;
25dbc73a
AM		 2559 unsigned long length;
2560 const char *error_message = NULL;
9abc968f 2561
25dbc73a
AM		 2562 if (link_info == NULL)
2563 return;
9abc968f 2564
25dbc73a 2565 apuinfo_list_init ();
252b5132 2566
25dbc73a
AM		 2567 /* Read in the input sections contents. */
2568 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2569 {
25dbc73a 2570 unsigned long datum;
252b5132 2571
25dbc73a
AM		 2572 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2573 if (asec == NULL)
2574 continue;
252b5132 2575
deddc40b 2576 error_message = _("corrupt %s section in %B");
25dbc73a 2577 length = asec->size;
deddc40b
NS		 2578 if (length < 20)
2579 goto fail;
2580
f2faa800 2581 apuinfo_set = TRUE;
deddc40b 2582 if (largest_input_size < asec->size)
25dbc73a 2583 {
deddc40b
NS		 2584 if (buffer)
2585 free (buffer);
2586 largest_input_size = asec->size;
2587 buffer = bfd_malloc (largest_input_size);
2588 if (!buffer)
2589 return;
25dbc73a 2590 }
5b914448 2591
25dbc73a 2592 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2593 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a
AM		 2594 {
2595 error_message = _("unable to read in %s section from %B");
2596 goto fail;
2597 }
252b5132 2598
25dbc73a
AM		 2599 /* Verify the contents of the header. Note - we have to
2600 extract the values this way in order to allow for a
2601 host whose endian-ness is different from the target. */
deddc40b 2602 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM		 2603 if (datum != sizeof APUINFO_LABEL)
2604 goto fail;
252b5132 2605
deddc40b 2606 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM		 2607 if (datum != 0x2)
2608 goto fail;
252b5132 2609
deddc40b 2610 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2611 goto fail;
252b5132 2612
25dbc73a 2613 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2614 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM		 2615 if (datum + 20 != length)
2616 goto fail;
2617
25dbc73a
AM		 2618 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2619 for (i = 0; i < datum; i += 4)
deddc40b 2620 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH		 2621 }
2622
25dbc73a 2623 error_message = NULL;
252b5132 2624
f2faa800 2625 if (apuinfo_set)
deddc40b 2626 {
f2faa800
NS		 2627 /* Compute the size of the output section. */
2628 unsigned num_entries = apuinfo_list_length ();
5b914448 2629
deddc40b
NS		 2630 /* Set the output section size, if it exists. */
2631 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2632
deddc40b
NS		 2633 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2634 {
2635 ibfd = abfd;
2636 error_message = _("warning: unable to set size of %s section in %B");
2637 }
2638 }
25dbc73a
AM		 2639
2640 fail:
deddc40b
NS		 2641 if (buffer)
2642 free (buffer);
25dbc73a
AM		 2643
2644 if (error_message)
2645 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2646}
252b5132 2647
25dbc73a
AM		 2648/* Prevent the output section from accumulating the input sections'
2649 contents. We have already stored this in our linked list structure. */
252b5132 2650
25dbc73a
AM		 2651static bfd_boolean
2652ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2653 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM		 2654 asection *asec,
2655 bfd_byte *contents ATTRIBUTE_UNUSED)
2656{
f2faa800 2657 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH		 2658}
2659
25dbc73a
AM		 2660/* Finally we can generate the output section. */
2661
2662static void
2663ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2664{
25dbc73a
AM		 2665 bfd_byte *buffer;
2666 asection *asec;
2667 unsigned i;
2668 unsigned num_entries;
2669 bfd_size_type length;
7619e7c7 2670
25dbc73a
AM		 2671 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2672 if (asec == NULL)
2673 return;
2674
f2faa800 2675 if (!apuinfo_set)
25dbc73a
AM		 2676 return;
2677
2678 length = asec->size;
2679 if (length < 20)
2680 return;
2681
2682 buffer = bfd_malloc (length);
2683 if (buffer == NULL)
7619e7c7 2684 {
25dbc73a
AM		 2685 (*_bfd_error_handler)
2686 (_("failed to allocate space for new APUinfo section."));
2687 return;
7619e7c7 2688 }
7619e7c7 2689
25dbc73a
AM		 2690 /* Create the apuinfo header. */
2691 num_entries = apuinfo_list_length ();
2692 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2693 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2694 bfd_put_32 (abfd, 0x2, buffer + 8);
2695 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2696
25dbc73a
AM		 2697 length = 20;
2698 for (i = 0; i < num_entries; i++)
feee612b 2699 {
25dbc73a
AM		 2700 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2701 length += 4;
feee612b 2702 }
feee612b 2703
25dbc73a
AM		 2704 if (length != asec->size)
2705 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2706
25dbc73a
AM		 2707 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2708 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2709
25dbc73a
AM		 2710 free (buffer);
2711
2712 apuinfo_list_finish ();
252b5132 2713}
25dbc73a 2714\f
7382d32a 2715static bfd_boolean
c6dd29ce 2716is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2717{
c6dd29ce 2718 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2719
c6dd29ce 2720 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM		 2721 return FALSE;
2722
c6dd29ce
AM		 2723 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2724 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2725 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2726 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM		 2727}
2728
468392fb
AM		 2729static bfd_boolean
2730section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2731{
2732 bfd_vma vma = *(bfd_vma *) ptr;
2733 return ((section->flags & SEC_ALLOC) != 0
2734 && section->vma <= vma
2735 && vma < section->vma + section->size);
2736}
2737
2738static long
2739ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2740 long dynsymcount, asymbol **dynsyms,
2741 asymbol **ret)
2742{
2743 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2744 asection *plt, *relplt, *dynamic, *glink;
2745 bfd_vma glink_vma = 0;
2746 bfd_vma resolv_vma = 0;
2747 bfd_vma stub_vma;
2748 asymbol *s;
2749 arelent *p;
2750 long count, i;
2751 size_t size;
2752 char *names;
2753 bfd_byte buf[4];
2754
2755 *ret = NULL;
2756
2757 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2758 return 0;
2759
2760 if (dynsymcount <= 0)
2761 return 0;
2762
2763 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2764 if (relplt == NULL)
2765 return 0;
2766
2767 plt = bfd_get_section_by_name (abfd, ".plt");
2768 if (plt == NULL)
2769 return 0;
2770
2771 /* Call common code to handle old-style executable PLTs. */
2772 if (elf_section_flags (plt) & SHF_EXECINSTR)
2773 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2774 dynsymcount, dynsyms, ret);
2775
2776 /* If this object was prelinked, the prelinker stored the address
2777 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2778 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2779 if (dynamic != NULL)
2780 {
2781 bfd_byte *dynbuf, *extdyn, *extdynend;
2782 size_t extdynsize;
2783 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2784
2785 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2786 return -1;
2787
2788 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2789 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2790
2791 extdyn = dynbuf;
2792 extdynend = extdyn + dynamic->size;
2793 for (; extdyn < extdynend; extdyn += extdynsize)
2794 {
2795 Elf_Internal_Dyn dyn;
2796 (*swap_dyn_in) (abfd, extdyn, &dyn);
2797
2798 if (dyn.d_tag == DT_NULL)
2799 break;
2800
2801 if (dyn.d_tag == DT_PPC_GOT)
2802 {
2803 unsigned int g_o_t = dyn.d_un.d_val;
2804 asection *got = bfd_get_section_by_name (abfd, ".got");
2805 if (got != NULL
2806 && bfd_get_section_contents (abfd, got, buf,
2807 g_o_t - got->vma + 4, 4))
2808 glink_vma = bfd_get_32 (abfd, buf);
2809 break;
2810 }
2811 }
2812 free (dynbuf);
2813 }
2814
2815 /* Otherwise we read the first plt entry. */
2816 if (glink_vma == 0)
2817 {
2818 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2819 glink_vma = bfd_get_32 (abfd, buf);
2820 }
2821
2822 if (glink_vma == 0)
2823 return 0;
2824
2825 /* The .glink section usually does not survive the final
2826 link; search for the section (usually .text) where the
2827 glink stubs now reside. */
2828 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2829 if (glink == NULL)
2830 return 0;
2831
2832 /* Determine glink PLT resolver by reading the relative branch
2833 from the first glink stub. */
2834 if (bfd_get_section_contents (abfd, glink, buf,
2835 glink_vma - glink->vma, 4))
2836 {
2837 unsigned int insn = bfd_get_32 (abfd, buf);
2838
2839 /* The first glink stub may either branch to the resolver ... */
2840 insn ^= B;
2841 if ((insn & ~0x3fffffc) == 0)
2842 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2843
2844 /* ... or fall through a bunch of NOPs. */
2845 else if ((insn ^ B ^ NOP) == 0)
2846 for (i = 4;
2847 bfd_get_section_contents (abfd, glink, buf,
2848 glink_vma - glink->vma + i, 4);
2849 i += 4)
2850 if (bfd_get_32 (abfd, buf) != NOP)
2851 {
2852 resolv_vma = glink_vma + i;
2853 break;
2854 }
2855 }
2856
7382d32a
AM		 2857 count = relplt->size / sizeof (Elf32_External_Rela);
2858 stub_vma = glink_vma - (bfd_vma) count * 16;
2859 /* If the stubs are those for -shared/-pie then we might have
2860 multiple stubs for each plt entry. If that is the case then
2861 there is no way to associate stubs with their plt entries short
2862 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM		 2863 if (!is_nonpic_glink_stub (abfd, glink,
2864 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM		 2865 return 0;
2866
468392fb
AM		 2867 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2868 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2869 return -1;
2870
468392fb
AM		 2871 size = count * sizeof (asymbol);
2872 p = relplt->relocation;
2873 for (i = 0; i < count; i++, p++)
e054468f
AM		 2874 {
2875 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2876 if (p->addend != 0)
2877 size += sizeof ("+0x") - 1 + 8;
2878 }
468392fb
AM		 2879
2880 size += sizeof (asymbol) + sizeof ("__glink");
2881
2882 if (resolv_vma)
2883 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2884
2885 s = *ret = bfd_malloc (size);
2886 if (s == NULL)
2887 return -1;
2888
2889 names = (char *) (s + count + 1 + (resolv_vma != 0));
2890 p = relplt->relocation;
2891 for (i = 0; i < count; i++, p++)
2892 {
2893 size_t len;
2894
2895 *s = **p->sym_ptr_ptr;
2896 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2897 we are defining a symbol, ensure one of them is set. */
2898 if ((s->flags & BSF_LOCAL) == 0)
2899 s->flags |= BSF_GLOBAL;
6ba2a415 2900 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 2901 s->section = glink;
2902 s->value = stub_vma - glink->vma;
2903 s->name = names;
2904 s->udata.p = NULL;
2905 len = strlen ((*p->sym_ptr_ptr)->name);
2906 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2907 names += len;
e054468f
AM		 2908 if (p->addend != 0)
2909 {
2910 memcpy (names, "+0x", sizeof ("+0x") - 1);
2911 names += sizeof ("+0x") - 1;
2912 bfd_sprintf_vma (abfd, names, p->addend);
2913 names += strlen (names);
2914 }
468392fb
AM		 2915 memcpy (names, "@plt", sizeof ("@plt"));
2916 names += sizeof ("@plt");
2917 ++s;
2918 stub_vma += 16;
2919 }
2920
2921 /* Add a symbol at the start of the glink branch table. */
86a4952b 2922 memset (s, 0, sizeof *s);
468392fb 2923 s->the_bfd = abfd;
6ba2a415 2924 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 2925 s->section = glink;
2926 s->value = glink_vma - glink->vma;
2927 s->name = names;
2928 memcpy (names, "__glink", sizeof ("__glink"));
2929 names += sizeof ("__glink");
2930 s++;
2931 count++;
2932
2933 if (resolv_vma)
2934 {
2935 /* Add a symbol for the glink PLT resolver. */
86a4952b 2936 memset (s, 0, sizeof *s);
468392fb 2937 s->the_bfd = abfd;
6ba2a415 2938 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 2939 s->section = glink;
2940 s->value = resolv_vma - glink->vma;
2941 s->name = names;
2942 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2943 names += sizeof ("__glink_PLTresolve");
2944 s++;
2945 count++;
2946 }
2947
2948 return count;
2949}
2950\f
25dbc73a
AM		 2951/* The following functions are specific to the ELF linker, while
2952 functions above are used generally. They appear in this file more
2953 or less in the order in which they are called. eg.
2954 ppc_elf_check_relocs is called early in the link process,
2955 ppc_elf_finish_dynamic_sections is one of the last functions
2956 called. */
252b5132 2957
a6aa5195 2958/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 2959 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM		 2960struct plt_entry
2961{
2962 struct plt_entry *next;
2963
2964 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2965 This field stores the offset into .got2 used to initialise the
a877a2b6
AM		 2966 GOT pointer reg. It will always be at least 32768. (Current
2967 gcc always uses an offset of 32768, but ld -r will pack .got2
2968 sections together resulting in larger offsets). */
a6aa5195
AM		 2969 bfd_vma addend;
2970
2971 /* The .got2 section. */
2972 asection *sec;
2973
2974 /* PLT refcount or offset. */
2975 union
2976 {
2977 bfd_signed_vma refcount;
2978 bfd_vma offset;
2979 } plt;
2980
2981 /* .glink stub offset. */
2982 bfd_vma glink_offset;
2983};
2984
1d483afe 2985/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM		 2986 selects those that must be copied when linking a shared library,
2987 even when the symbol is local. */
252b5132 2988
1d483afe
AM		 2989static int
2990must_be_dyn_reloc (struct bfd_link_info *info,
2991 enum elf_ppc_reloc_type r_type)
2992{
2993 switch (r_type)
2994 {
2995 default:
2996 return 1;
2997
2998 case R_PPC_REL24:
2999 case R_PPC_REL14:
3000 case R_PPC_REL14_BRTAKEN:
3001 case R_PPC_REL14_BRNTAKEN:
3002 case R_PPC_REL32:
3003 return 0;
3004
3005 case R_PPC_TPREL32:
3006 case R_PPC_TPREL16:
3007 case R_PPC_TPREL16_LO:
3008 case R_PPC_TPREL16_HI:
3009 case R_PPC_TPREL16_HA:
3010 return !info->executable;
3011 }
3012}
252b5132 3013
25dbc73a
AM		 3014/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3015 copying dynamic variables from a shared lib into an app's dynbss
3016 section, and instead use a dynamic relocation to point into the
3017 shared lib. */
3018#define ELIMINATE_COPY_RELOCS 1
252b5132 3019
25dbc73a 3020/* PPC ELF linker hash entry. */
252b5132 3021
25dbc73a
AM		 3022struct ppc_elf_link_hash_entry
3023{
3024 struct elf_link_hash_entry elf;
252b5132 3025
25dbc73a
AM		 3026 /* If this symbol is used in the linker created sections, the processor
3027 specific backend uses this field to map the field into the offset
3028 from the beginning of the section. */
3029 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3030
25dbc73a 3031 /* Track dynamic relocs copied for this symbol. */
6061a67d 3032 struct elf_dyn_relocs *dyn_relocs;
252b5132 3033
25dbc73a
AM		 3034 /* Contexts in which symbol is used in the GOT (or TOC).
3035 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3036 corresponding relocs are encountered during check_relocs.
3037 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3038 indicate the corresponding GOT entry type is not needed. */
3039#define TLS_GD 1 /* GD reloc. */
3040#define TLS_LD 2 /* LD reloc. */
3041#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3042#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3043#define TLS_TLS 16 /* Any TLS reloc. */
3044#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3045#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3046 char tls_mask;
4dc4a9a5
DJ		 3047
3048 /* Nonzero if we have seen a small data relocation referring to this
3049 symbol. */
3050 unsigned char has_sda_refs;
25dbc73a 3051};
252b5132 3052
25dbc73a
AM		 3053#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3054
3055/* PPC ELF linker hash table. */
3056
3057struct ppc_elf_link_hash_table
3058{
3059 struct elf_link_hash_table elf;
3060
3061 /* Short-cuts to get to dynamic linker sections. */
3062 asection *got;
3063 asection *relgot;
d7128ce4 3064 asection *glink;
25dbc73a
AM		 3065 asection *plt;
3066 asection *relplt;
e054468f
AM		 3067 asection *iplt;
3068 asection *reliplt;
25dbc73a
AM		 3069 asection *dynbss;
3070 asection *relbss;
3071 asection *dynsbss;
3072 asection *relsbss;
c9a2f333 3073 elf_linker_section_t sdata[2];
25dbc73a 3074 asection *sbss;
6177242a 3075 asection *glink_eh_frame;
25dbc73a 3076
016687f8
AM		 3077 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3078 asection *srelplt2;
3079
3080 /* The .got.plt section (VxWorks only)*/
3081 asection *sgotplt;
3082
1d483afe 3083 /* Shortcut to __tls_get_addr. */
25dbc73a 3084 struct elf_link_hash_entry *tls_get_addr;
252b5132 3085
016687f8
AM		 3086 /* The bfd that forced an old-style PLT. */
3087 bfd *old_bfd;
5b914448 3088
25dbc73a
AM		 3089 /* TLS local dynamic got entry handling. */
3090 union {
3091 bfd_signed_vma refcount;
3092 bfd_vma offset;
3093 } tlsld_got;
252b5132 3094
c6dd29ce 3095 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM		 3096 bfd_vma glink_pltresolve;
3097
3b36f7e6
AM		 3098 /* Size of reserved GOT entries. */
3099 unsigned int got_header_size;
3100 /* Non-zero if allocating the header left a gap. */
3101 unsigned int got_gap;
3102
4a3dc543
RS		 3103 /* The type of PLT we have chosen to use. */
3104 enum ppc_elf_plt_type plt_type;
3105
0ba07910
AM		 3106 /* Set if we should emit symbols for stubs. */
3107 unsigned int emit_stub_syms:1;
3108
a7f2871e
AM		 3109 /* Set if __tls_get_addr optimization should not be done. */
3110 unsigned int no_tls_get_addr_opt:1;
3111
9d8504b1 3112 /* True if the target system is VxWorks. */
016687f8 3113 unsigned int is_vxworks:1;
9d8504b1
PB		 3114
3115 /* The size of PLT entries. */
3116 int plt_entry_size;
3117 /* The distance between adjacent PLT slots. */
3118 int plt_slot_size;
3119 /* The size of the first PLT entry. */
3120 int plt_initial_entry_size;
016687f8 3121
87d72d41
AM		 3122 /* Small local sym cache. */
3123 struct sym_cache sym_cache;
25dbc73a 3124};
252b5132 3125
94caa966
AM		 3126/* Rename some of the generic section flags to better document how they
3127 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3128
3129/* Nonzero if this section has TLS related relocations. */
3130#define has_tls_reloc sec_flg0
3131
3132/* Nonzero if this section has a call to __tls_get_addr. */
3133#define has_tls_get_addr_call sec_flg1
3134
25dbc73a 3135/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3136
25dbc73a 3137#define ppc_elf_hash_table(p) \
4dfe6ac6
NC		 3138 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3139 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3140
25dbc73a 3141/* Create an entry in a PPC ELF linker hash table. */
252b5132 3142
25dbc73a
AM		 3143static struct bfd_hash_entry *
3144ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3145 struct bfd_hash_table *table,
3146 const char *string)
252b5132 3147{
25dbc73a
AM		 3148 /* Allocate the structure if it has not already been allocated by a
3149 subclass. */
3150 if (entry == NULL)
3151 {
3152 entry = bfd_hash_allocate (table,
3153 sizeof (struct ppc_elf_link_hash_entry));
3154 if (entry == NULL)
3155 return entry;
3156 }
252b5132 3157
25dbc73a
AM		 3158 /* Call the allocation method of the superclass. */
3159 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3160 if (entry != NULL)
3161 {
3162 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3163 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3164 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3165 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3166 }
252b5132 3167
25dbc73a 3168 return entry;
252b5132 3169}
3dab13f6 3170
25dbc73a 3171/* Create a PPC ELF linker hash table. */
3dab13f6 3172
25dbc73a
AM		 3173static struct bfd_link_hash_table *
3174ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3175{
25dbc73a 3176 struct ppc_elf_link_hash_table *ret;
3dab13f6 3177
25dbc73a
AM		 3178 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3179 if (ret == NULL)
3180 return NULL;
3dab13f6 3181
66eb6687
AM		 3182 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3183 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC		 3184 sizeof (struct ppc_elf_link_hash_entry),
3185 PPC32_ELF_DATA))
3dab13f6 3186 {
25dbc73a
AM		 3187 free (ret);
3188 return NULL;
3189 }
58111eb7 3190
a6aa5195
AM		 3191 ret->elf.init_plt_refcount.refcount = 0;
3192 ret->elf.init_plt_refcount.glist = NULL;
3193 ret->elf.init_plt_offset.offset = 0;
3194 ret->elf.init_plt_offset.glist = NULL;
3195
c9a2f333
AM		 3196 ret->sdata[0].name = ".sdata";
3197 ret->sdata[0].sym_name = "_SDA_BASE_";
3198 ret->sdata[0].bss_name = ".sbss";
3199
3200 ret->sdata[1].name = ".sdata2";
3201 ret->sdata[1].sym_name = "_SDA2_BASE_";
3202 ret->sdata[1].bss_name = ".sbss2";
3203
9d8504b1
PB		 3204 ret->plt_entry_size = 12;
3205 ret->plt_slot_size = 8;
3206 ret->plt_initial_entry_size = 72;
9d8504b1 3207
25dbc73a
AM		 3208 return &ret->elf.root;
3209}
3dab13f6 3210
9d8504b1 3211/* Create .got and the related sections. */
3dab13f6 3212
25dbc73a
AM		 3213static bfd_boolean
3214ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3215{
3216 struct ppc_elf_link_hash_table *htab;
3217 asection *s;
3218 flagword flags;
3dab13f6 3219
25dbc73a
AM		 3220 if (!_bfd_elf_create_got_section (abfd, info))
3221 return FALSE;
3dab13f6 3222
25dbc73a 3223 htab = ppc_elf_hash_table (info);
3d4d4302 3224 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM		 3225 if (s == NULL)
3226 abort ();
3dab13f6 3227
9d8504b1
PB		 3228 if (htab->is_vxworks)
3229 {
3d4d4302 3230 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB		 3231 if (!htab->sgotplt)
3232 abort ();
3233 }
3234 else
3235 {
3236 /* The powerpc .got has a blrl instruction in it. Mark it
3237 executable. */
3238 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3239 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3240 if (!bfd_set_section_flags (abfd, s, flags))
3241 return FALSE;
3242 }
3dab13f6 3243
3d4d4302 3244 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L		 3245 if (!htab->relgot)
3246 abort ();
3dab13f6 3247
25dbc73a
AM		 3248 return TRUE;
3249}
3dab13f6 3250
e054468f
AM		 3251static bfd_boolean
3252ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3253{
3254 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3255 asection *s;
3256 flagword flags;
3257
3258 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3259 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3260 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3261 htab->glink = s;
3262 if (s == NULL
3263 || !bfd_set_section_alignment (abfd, s, 4))
3264 return FALSE;
3265
6177242a
AM		 3266 if (!info->no_ld_generated_unwind_info)
3267 {
3268 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3269 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3270 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3271 htab->glink_eh_frame = s;
3272 if (s == NULL
3273 || !bfd_set_section_alignment (abfd, s, 2))
3274 return FALSE;
3275 }
3276
e054468f
AM		 3277 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3278 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3279 htab->iplt = s;
3280 if (s == NULL
3281 || !bfd_set_section_alignment (abfd, s, 4))
3282 return FALSE;
3283
3284 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3285 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3286 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM		 3287 htab->reliplt = s;
3288 if (s == NULL
3289 || ! bfd_set_section_alignment (abfd, s, 2))
3290 return FALSE;
3291 return TRUE;
3292}
3293
25dbc73a
AM		 3294/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3295 to output sections (just like _bfd_elf_create_dynamic_sections has
3296 to create .dynbss and .rela.bss). */
3dab13f6 3297
25dbc73a
AM		 3298static bfd_boolean
3299ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3300{
3301 struct ppc_elf_link_hash_table *htab;
3302 asection *s;
3303 flagword flags;
3dab13f6 3304
25dbc73a 3305 htab = ppc_elf_hash_table (info);
3dab13f6 3306
25dbc73a
AM		 3307 if (htab->got == NULL
3308 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM		 3309 return FALSE;
3310
25dbc73a
AM		 3311 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3312 return FALSE;
3dab13f6 3313
e054468f
AM		 3314 if (htab->glink == NULL
3315 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3316 return FALSE;
3dab13f6 3317
3d4d4302 3318 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM		 3319 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3320 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3321 htab->dynsbss = s;
3496cb2a 3322 if (s == NULL)
25dbc73a 3323 return FALSE;
3dab13f6 3324
25dbc73a
AM		 3325 if (! info->shared)
3326 {
3d4d4302 3327 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM		 3328 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3329 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3330 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3331 htab->relsbss = s;
25dbc73a 3332 if (s == NULL
25dbc73a
AM		 3333 || ! bfd_set_section_alignment (abfd, s, 2))
3334 return FALSE;
3335 }
3dab13f6 3336
711de32c
RS		 3337 if (htab->is_vxworks
3338 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3339 return FALSE;
9d8504b1 3340
3d4d4302
AM		 3341 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3342 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM		 3343 if (s == NULL)
3344 abort ();
3dab13f6 3345
3b36f7e6 3346 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS		 3347 if (htab->plt_type == PLT_VXWORKS)
3348 /* The VxWorks PLT is a loaded section with contents. */
3349 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM		 3350 return bfd_set_section_flags (abfd, s, flags);
3351}
3dab13f6 3352
25dbc73a 3353/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3354
25dbc73a 3355static void
fcfa13d2 3356ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM		 3357 struct elf_link_hash_entry *dir,
3358 struct elf_link_hash_entry *ind)
3359{
3360 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3361
25dbc73a
AM		 3362 edir = (struct ppc_elf_link_hash_entry *) dir;
3363 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3364
c79d6685
AM		 3365 edir->tls_mask |= eind->tls_mask;
3366 edir->has_sda_refs |= eind->has_sda_refs;
3367
3368 /* If called to transfer flags for a weakdef during processing
3369 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3370 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3371 if (!(ELIMINATE_COPY_RELOCS
3372 && eind->elf.root.type != bfd_link_hash_indirect
3373 && edir->elf.dynamic_adjusted))
3374 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3375
3376 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3377 edir->elf.ref_regular |= eind->elf.ref_regular;
3378 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3379 edir->elf.needs_plt |= eind->elf.needs_plt;
3380 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3381
25dbc73a
AM		 3382 if (eind->dyn_relocs != NULL)
3383 {
3384 if (edir->dyn_relocs != NULL)
3dab13f6 3385 {
6061a67d
AM		 3386 struct elf_dyn_relocs **pp;
3387 struct elf_dyn_relocs *p;
3dab13f6 3388
fcfa13d2 3389 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM		 3390 list. Merge any entries against the same section. */
3391 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3392 {
6061a67d 3393 struct elf_dyn_relocs *q;
25dbc73a
AM		 3394
3395 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3396 if (q->sec == p->sec)
3397 {
3398 q->pc_count += p->pc_count;
3399 q->count += p->count;
3400 *pp = p->next;
3401 break;
3402 }
3403 if (q == NULL)
3404 pp = &p->next;
3dab13f6 3405 }
25dbc73a 3406 *pp = edir->dyn_relocs;
3dab13f6 3407 }
25dbc73a
AM		 3408
3409 edir->dyn_relocs = eind->dyn_relocs;
3410 eind->dyn_relocs = NULL;
3dab13f6 3411 }
3dab13f6 3412
68ba6d40
AM		 3413 /* If we were called to copy over info for a weak sym, that's all.
3414 You might think dyn_relocs need not be copied over; After all,
3415 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3416 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM		 3417 code in ppc_elf_adjust_dynamic_symbol needs to check for
3418 dyn_relocs in read-only sections, and it does so on what is the
3419 DIR sym here. */
3420 if (eind->elf.root.type != bfd_link_hash_indirect)
3421 return;
3422
a6aa5195
AM		 3423 /* Copy over the GOT refcount entries that we may have already seen to
3424 the symbol which just became indirect. */
fcfa13d2
AM		 3425 edir->elf.got.refcount += eind->elf.got.refcount;
3426 eind->elf.got.refcount = 0;
a6aa5195
AM		 3427
3428 /* And plt entries. */
3429 if (eind->elf.plt.plist != NULL)
3430 {
3431 if (edir->elf.plt.plist != NULL)
3432 {
3433 struct plt_entry **entp;
3434 struct plt_entry *ent;
3435
3436 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3437 {
3438 struct plt_entry *dent;
3439
3440 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3441 if (dent->sec == ent->sec && dent->addend == ent->addend)
3442 {
3443 dent->plt.refcount += ent->plt.refcount;
3444 *entp = ent->next;
3445 break;
3446 }
3447 if (dent == NULL)
3448 entp = &ent->next;
3449 }
3450 *entp = edir->elf.plt.plist;
3451 }
3452
3453 edir->elf.plt.plist = eind->elf.plt.plist;
3454 eind->elf.plt.plist = NULL;
3455 }
3456
fcfa13d2 3457 if (eind->elf.dynindx != -1)
25dbc73a 3458 {
fcfa13d2
AM		 3459 if (edir->elf.dynindx != -1)
3460 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3461 edir->elf.dynstr_index);
a6aa5195
AM		 3462 edir->elf.dynindx = eind->elf.dynindx;
3463 edir->elf.dynstr_index = eind->elf.dynstr_index;
3464 eind->elf.dynindx = -1;
3465 eind->elf.dynstr_index = 0;
25dbc73a 3466 }
25dbc73a 3467}
3dab13f6 3468
25dbc73a
AM		 3469/* Hook called by the linker routine which adds symbols from an object
3470 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3471
25dbc73a
AM		 3472static bfd_boolean
3473ppc_elf_add_symbol_hook (bfd *abfd,
3474 struct bfd_link_info *info,
3475 Elf_Internal_Sym *sym,
3476 const char **namep ATTRIBUTE_UNUSED,
3477 flagword *flagsp ATTRIBUTE_UNUSED,
3478 asection **secp,
3479 bfd_vma *valp)
3480{
3481 if (sym->st_shndx == SHN_COMMON
3482 && !info->relocatable
0c8d6e5c
AM		 3483 && is_ppc_elf (info->output_bfd)
3484 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM		 3485 {
3486 /* Common symbols less than or equal to -G nn bytes are automatically
3487 put into .sbss. */
3488 struct ppc_elf_link_hash_table *htab;
3dab13f6 3489
25dbc73a
AM		 3490 htab = ppc_elf_hash_table (info);
3491 if (htab->sbss == NULL)
3492 {
644285ef 3493 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3494
644285ef
AM		 3495 if (!htab->elf.dynobj)
3496 htab->elf.dynobj = abfd;
3497
3496cb2a
L		 3498 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3499 ".sbss",
3500 flags);
3501 if (htab->sbss == NULL)
25dbc73a 3502 return FALSE;
3dab13f6 3503 }
3dab13f6 3504
25dbc73a
AM		 3505 *secp = htab->sbss;
3506 *valp = sym->st_size;
3507 }
3dab13f6 3508
c16153ae 3509 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 3510 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3511 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3512 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
e054468f 3513
25dbc73a 3514 return TRUE;
3dab13f6
AM		 3515}
3516\f
046183de 3517static bfd_boolean
bd6c6e2b 3518create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
046183de 3519{
bd6c6e2b
AM		 3520 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3521
046183de
AM		 3522 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3523 TRUE, FALSE, TRUE);
3524 if (lsect->sym == NULL)
3525 return FALSE;
3526 if (lsect->sym->root.type == bfd_link_hash_new)
3527 lsect->sym->non_elf = 0;
3528 lsect->sym->ref_regular = 1;
bd6c6e2b 3529 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
046183de
AM		 3530 return TRUE;
3531}
3532
c9a2f333 3533/* Create a special linker section. */
25dbc73a 3534
c9a2f333 3535static bfd_boolean
55fd94b0
AM		 3536ppc_elf_create_linker_section (bfd *abfd,
3537 struct bfd_link_info *info,
c9a2f333
AM		 3538 flagword flags,
3539 elf_linker_section_t *lsect)
252b5132 3540{
58111eb7 3541 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3542 asection *s;
58111eb7 3543
c9a2f333
AM		 3544 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3545 | SEC_LINKER_CREATED);
58111eb7
AM		 3546
3547 /* Record the first bfd that needs the special sections. */
3548 if (!htab->elf.dynobj)
3549 htab->elf.dynobj = abfd;
3550
3496cb2a
L		 3551 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3552 lsect->name,
3553 flags);
76750a2f 3554 if (s == NULL
76750a2f 3555 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3556 return FALSE;
76750a2f 3557 lsect->section = s;
58111eb7 3558
bd6c6e2b 3559 return create_sdata_sym (info, lsect);
252b5132 3560}
252b5132 3561
25dbc73a
AM		 3562/* Find a linker generated pointer with a given addend and type. */
3563
3564static elf_linker_section_pointers_t *
3565elf_find_pointer_linker_section
3566 (elf_linker_section_pointers_t *linker_pointers,
3567 bfd_vma addend,
3568 elf_linker_section_t *lsect)
252b5132 3569{
25dbc73a
AM		 3570 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3571 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3572 return linker_pointers;
252b5132 3573
25dbc73a
AM		 3574 return NULL;
3575}
3576
3577/* Allocate a pointer to live in a linker created section. */
3578
3579static bfd_boolean
3580elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM		 3581 elf_linker_section_t *lsect,
3582 struct elf_link_hash_entry *h,
3583 const Elf_Internal_Rela *rel)
3584{
3585 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3586 elf_linker_section_pointers_t *linker_section_ptr;
3587 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3588 bfd_size_type amt;
3589
3590 BFD_ASSERT (lsect != NULL);
3591
3592 /* Is this a global symbol? */
3593 if (h != NULL)
3594 {
3595 struct ppc_elf_link_hash_entry *eh;
3596
3597 /* Has this symbol already been allocated? If so, our work is done. */
3598 eh = (struct ppc_elf_link_hash_entry *) h;
3599 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3600 rel->r_addend,
3601 lsect))
3602 return TRUE;
3603
3604 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM		 3605 }
3606 else
3607 {
0c8d6e5c 3608 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3609
25dbc73a
AM		 3610 /* Allocation of a pointer to a local symbol. */
3611 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3612
3613 /* Allocate a table to hold the local symbols if first time. */
3614 if (!ptr)
3615 {
0ffa91dd 3616 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM		 3617
3618 amt = num_symbols;
3619 amt *= sizeof (elf_linker_section_pointers_t *);
3620 ptr = bfd_zalloc (abfd, amt);
3621
3622 if (!ptr)
3623 return FALSE;
3624
3625 elf_local_ptr_offsets (abfd) = ptr;
3626 }
3627
3628 /* Has this symbol already been allocated? If so, our work is done. */
3629 if (elf_find_pointer_linker_section (ptr[r_symndx],
3630 rel->r_addend,
3631 lsect))
3632 return TRUE;
252b5132 3633
25dbc73a 3634 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3635 }
41fcb14e 3636
25dbc73a
AM		 3637 /* Allocate space for a pointer in the linker section, and allocate
3638 a new pointer record from internal memory. */
3639 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3640 amt = sizeof (elf_linker_section_pointers_t);
3641 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3642
25dbc73a 3643 if (!linker_section_ptr)
7619e7c7 3644 return FALSE;
41fcb14e 3645
25dbc73a
AM		 3646 linker_section_ptr->next = *ptr_linker_section_ptr;
3647 linker_section_ptr->addend = rel->r_addend;
3648 linker_section_ptr->lsect = lsect;
25dbc73a 3649 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3650
25dbc73a
AM		 3651 linker_section_ptr->offset = lsect->section->size;
3652 lsect->section->size += 4;
7619e7c7 3653
25dbc73a
AM		 3654#ifdef DEBUG
3655 fprintf (stderr,
3656 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3657 lsect->name, (long) linker_section_ptr->offset,
3658 (long) lsect->section->size);
3659#endif
7619e7c7
AM		 3660
3661 return TRUE;
41fcb14e
AM		 3662}
3663
e054468f 3664static struct plt_entry **
25dbc73a
AM		 3665update_local_sym_info (bfd *abfd,
3666 Elf_Internal_Shdr *symtab_hdr,
3667 unsigned long r_symndx,
3668 int tls_type)
252b5132 3669{
25dbc73a 3670 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3671 struct plt_entry **local_plt;
25dbc73a 3672 char *local_got_tls_masks;
252b5132 3673
25dbc73a 3674 if (local_got_refcounts == NULL)
252b5132 3675 {
25dbc73a
AM		 3676 bfd_size_type size = symtab_hdr->sh_info;
3677
e054468f
AM		 3678 size *= (sizeof (*local_got_refcounts)
3679 + sizeof (*local_plt)
3680 + sizeof (*local_got_tls_masks));
25dbc73a
AM		 3681 local_got_refcounts = bfd_zalloc (abfd, size);
3682 if (local_got_refcounts == NULL)
e054468f 3683 return NULL;
25dbc73a 3684 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3685 }
41fcb14e 3686
e054468f
AM		 3687 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3688 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3689 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 3690 if (tls_type != PLT_IFUNC)
3691 local_got_refcounts[r_symndx] += 1;
3692 return local_plt + r_symndx;
25dbc73a 3693}
41fcb14e 3694
a6aa5195 3695static bfd_boolean
3ec01793 3696update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM		 3697 asection *sec, bfd_vma addend)
3698{
3699 struct plt_entry *ent;
3700
32af9f6e
AM		 3701 if (addend < 32768)
3702 sec = NULL;
3ec01793 3703 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM		 3704 if (ent->sec == sec && ent->addend == addend)
3705 break;
3706 if (ent == NULL)
3707 {
3708 bfd_size_type amt = sizeof (*ent);
3709 ent = bfd_alloc (abfd, amt);
3710 if (ent == NULL)
3711 return FALSE;
3ec01793 3712 ent->next = *plist;
a6aa5195
AM		 3713 ent->sec = sec;
3714 ent->addend = addend;
3715 ent->plt.refcount = 0;
3ec01793 3716 *plist = ent;
a6aa5195
AM		 3717 }
3718 ent->plt.refcount += 1;
3719 return TRUE;
3720}
3721
3722static struct plt_entry *
3ec01793 3723find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM		 3724{
3725 struct plt_entry *ent;
3726
3727 if (addend < 32768)
3728 sec = NULL;
3ec01793 3729 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM		 3730 if (ent->sec == sec && ent->addend == addend)
3731 break;
3732 return ent;
3733}
3734
e054468f
AM		 3735static bfd_boolean
3736is_branch_reloc (enum elf_ppc_reloc_type r_type)
3737{
3738 return (r_type == R_PPC_PLTREL24
3739 || r_type == R_PPC_LOCAL24PC
3740 || r_type == R_PPC_REL24
3741 || r_type == R_PPC_REL14
3742 || r_type == R_PPC_REL14_BRTAKEN
3743 || r_type == R_PPC_REL14_BRNTAKEN
3744 || r_type == R_PPC_ADDR24
3745 || r_type == R_PPC_ADDR14
3746 || r_type == R_PPC_ADDR14_BRTAKEN
3747 || r_type == R_PPC_ADDR14_BRNTAKEN);
3748}
3749
25dbc73a
AM		 3750static void
3751bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3752{
3753 (*_bfd_error_handler)
3754 (_("%B: relocation %s cannot be used when making a shared object"),
3755 abfd,
3756 ppc_elf_howto_table[r_type]->name);
3757 bfd_set_error (bfd_error_bad_value);
252b5132
RH		 3758}
3759
25dbc73a
AM		 3760/* Look through the relocs for a section during the first phase, and
3761 allocate space in the global offset table or procedure linkage
3762 table. */
252b5132 3763
b34976b6 3764static bfd_boolean
25dbc73a
AM		 3765ppc_elf_check_relocs (bfd *abfd,
3766 struct bfd_link_info *info,
3767 asection *sec,
3768 const Elf_Internal_Rela *relocs)
252b5132 3769{
7619e7c7 3770 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM		 3771 Elf_Internal_Shdr *symtab_hdr;
3772 struct elf_link_hash_entry **sym_hashes;
3773 const Elf_Internal_Rela *rel;
3774 const Elf_Internal_Rela *rel_end;
a6aa5195 3775 asection *got2, *sreloc;
727fc41e 3776 struct elf_link_hash_entry *tga;
25dbc73a
AM		 3777
3778 if (info->relocatable)
3779 return TRUE;
252b5132 3780
c87b5a93
AM		 3781 /* Don't do anything special with non-loaded, non-alloced sections.
3782 In particular, any relocs in such sections should not affect GOT
3783 and PLT reference counting (ie. we don't allow them to create GOT
3784 or PLT entries), there's no possibility or desire to optimize TLS
3785 relocs, and there's not much point in propagating relocs to shared
3786 libs that the dynamic linker won't relocate. */
3787 if ((sec->flags & SEC_ALLOC) == 0)
3788 return TRUE;
3789
252b5132 3790#ifdef DEBUG
25dbc73a
AM		 3791 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3792 sec, abfd);
252b5132
RH		 3793#endif
3794
0c8d6e5c 3795 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3796
25dbc73a
AM		 3797 /* Initialize howto table if not already done. */
3798 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3799 ppc_elf_howto_init ();
3800
7619e7c7 3801 htab = ppc_elf_hash_table (info);
25f23106
AM		 3802 if (htab->glink == NULL)
3803 {
3804 if (htab->elf.dynobj == NULL)
3805 htab->elf.dynobj = abfd;
3806 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3807 return FALSE;
3808 }
727fc41e
AM		 3809 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3810 FALSE, FALSE, TRUE);
0ffa91dd 3811 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3812 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3813 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 3814 sreloc = NULL;
3815
3816 rel_end = relocs + sec->reloc_count;
3817 for (rel = relocs; rel < rel_end; rel++)
3818 {
3819 unsigned long r_symndx;
3820 enum elf_ppc_reloc_type r_type;
3821 struct elf_link_hash_entry *h;
727fc41e 3822 int tls_type;
25dbc73a
AM		 3823
3824 r_symndx = ELF32_R_SYM (rel->r_info);
3825 if (r_symndx < symtab_hdr->sh_info)
3826 h = NULL;
3827 else
973a3492
L		 3828 {
3829 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3830 while (h->root.type == bfd_link_hash_indirect
3831 || h->root.type == bfd_link_hash_warning)
3832 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3833 }
25dbc73a
AM		 3834
3835 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3836 This shows up in particular in an R_PPC_ADDR32 in the eabi
3837 startup code. */
3b36f7e6
AM		 3838 if (h != NULL
3839 && htab->got == NULL
3840 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3841 {
3b36f7e6
AM		 3842 if (htab->elf.dynobj == NULL)
3843 htab->elf.dynobj = abfd;
3844 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3845 return FALSE;
3846 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3847 }
252b5132 3848
727fc41e 3849 tls_type = 0;
de972ffa 3850 r_type = ELF32_R_TYPE (rel->r_info);
06a162cf 3851 if (h == NULL && !htab->is_vxworks)
e054468f 3852 {
06a162cf
AM		 3853 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3854 abfd, r_symndx);
3855 if (isym == NULL)
3856 return FALSE;
3857
3858 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3859 && (!info->shared
3860 || is_branch_reloc (r_type)))
e054468f 3861 {
06a162cf
AM		 3862 struct plt_entry **ifunc;
3863 bfd_vma addend;
3864
3865 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3866 PLT_IFUNC);
3867 if (ifunc == NULL)
e054468f
AM		 3868 return FALSE;
3869
06a162cf
AM		 3870 /* STT_GNU_IFUNC symbols must have a PLT entry;
3871 In a non-pie executable even when there are
3872 no plt calls. */
3873 addend = 0;
3874 if (r_type == R_PPC_PLTREL24)
e054468f 3875 {
06a162cf
AM		 3876 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3877 if (info->shared)
3878 addend = rel->r_addend;
e054468f 3879 }
06a162cf
AM		 3880 if (!update_plt_info (abfd, ifunc, got2, addend))
3881 return FALSE;
e054468f 3882 }
25f23106
AM		 3883 }
3884
de972ffa
AM		 3885 if (!htab->is_vxworks
3886 && is_branch_reloc (r_type)
3887 && h != NULL
3888 && h == tga)
25f23106 3889 {
de972ffa
AM		 3890 if (rel != relocs
3891 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3892 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3893 /* We have a new-style __tls_get_addr call with a marker
3894 reloc. */
3895 ;
3896 else
3897 /* Mark this section as having an old-style call. */
3898 sec->has_tls_get_addr_call = 1;
e054468f 3899 }
727fc41e 3900
25dbc73a
AM		 3901 switch (r_type)
3902 {
727fc41e
AM		 3903 case R_PPC_TLSGD:
3904 case R_PPC_TLSLD:
3905 /* These special tls relocs tie a call to __tls_get_addr with
3906 its parameter symbol. */
3907 break;
3908
25dbc73a
AM		 3909 case R_PPC_GOT_TLSLD16:
3910 case R_PPC_GOT_TLSLD16_LO:
3911 case R_PPC_GOT_TLSLD16_HI:
3912 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM		 3913 tls_type = TLS_TLS | TLS_LD;
3914 goto dogottls;
252b5132 3915
25dbc73a
AM		 3916 case R_PPC_GOT_TLSGD16:
3917 case R_PPC_GOT_TLSGD16_LO:
3918 case R_PPC_GOT_TLSGD16_HI:
3919 case R_PPC_GOT_TLSGD16_HA:
3920 tls_type = TLS_TLS | TLS_GD;
3921 goto dogottls;
3922
3923 case R_PPC_GOT_TPREL16:
3924 case R_PPC_GOT_TPREL16_LO:
3925 case R_PPC_GOT_TPREL16_HI:
3926 case R_PPC_GOT_TPREL16_HA:
1d483afe 3927 if (!info->executable)
25dbc73a
AM		 3928 info->flags |= DF_STATIC_TLS;
3929 tls_type = TLS_TLS | TLS_TPREL;
3930 goto dogottls;
3931
3932 case R_PPC_GOT_DTPREL16:
3933 case R_PPC_GOT_DTPREL16_LO:
3934 case R_PPC_GOT_DTPREL16_HI:
3935 case R_PPC_GOT_DTPREL16_HA:
3936 tls_type = TLS_TLS | TLS_DTPREL;
3937 dogottls:
3938 sec->has_tls_reloc = 1;
3939 /* Fall thru */
252b5132 3940
25dbc73a
AM		 3941 /* GOT16 relocations */
3942 case R_PPC_GOT16:
3943 case R_PPC_GOT16_LO:
3944 case R_PPC_GOT16_HI:
3945 case R_PPC_GOT16_HA:
3946 /* This symbol requires a global offset table entry. */
3947 if (htab->got == NULL)
3948 {
3949 if (htab->elf.dynobj == NULL)
3950 htab->elf.dynobj = abfd;
3951 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3952 return FALSE;
3953 }
3954 if (h != NULL)
3955 {
3956 h->got.refcount += 1;
3957 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3958 }
3959 else
3960 /* This is a global offset table entry for a local symbol. */
3961 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3962 return FALSE;
91e21fb7
AM		 3963
3964 /* We may also need a plt entry if the symbol turns out to be
3965 an ifunc. */
3966 if (h != NULL && !info->shared)
3967 {
3968 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3969 return FALSE;
3970 }
25dbc73a 3971 break;
252b5132 3972
25dbc73a
AM		 3973 /* Indirect .sdata relocation. */
3974 case R_PPC_EMB_SDAI16:
3975 if (info->shared)
3976 {
3977 bad_shared_reloc (abfd, r_type);
3978 return FALSE;
3979 }
c9a2f333
AM		 3980 if (htab->sdata[0].section == NULL
3981 && !ppc_elf_create_linker_section (abfd, info, 0,
3982 &htab->sdata[0]))
3983 return FALSE;
76750a2f
AM		 3984 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3985 h, rel))
25dbc73a 3986 return FALSE;
046183de
AM		 3987 if (h != NULL)
3988 {
3989 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3990 h->non_got_ref = TRUE;
3991 }
25dbc73a 3992 break;
252b5132 3993
25dbc73a
AM		 3994 /* Indirect .sdata2 relocation. */
3995 case R_PPC_EMB_SDA2I16:
3996 if (info->shared)
3997 {
3998 bad_shared_reloc (abfd, r_type);
3999 return FALSE;
4000 }
c9a2f333
AM		 4001 if (htab->sdata[1].section == NULL
4002 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4003 &htab->sdata[1]))
4004 return FALSE;
76750a2f
AM		 4005 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4006 h, rel))
25dbc73a 4007 return FALSE;
046183de
AM		 4008 if (h != NULL)
4009 {
4010 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4011 h->non_got_ref = TRUE;
4012 }
25dbc73a 4013 break;
252b5132 4014
b9c361e0
JL		 4015 case R_PPC_VLE_SDAREL_LO16A:
4016 case R_PPC_VLE_SDAREL_LO16D:
4017 case R_PPC_VLE_SDAREL_HI16A:
4018 case R_PPC_VLE_SDAREL_HI16D:
4019 case R_PPC_VLE_SDAREL_HA16A:
4020 case R_PPC_VLE_SDAREL_HA16D:
25dbc73a 4021 case R_PPC_SDAREL16:
046183de 4022 if (htab->sdata[0].sym == NULL
bd6c6e2b 4023 && !create_sdata_sym (info, &htab->sdata[0]))
046183de 4024 return FALSE;
b9c361e0
JL		 4025
4026 if (htab->sdata[1].sym == NULL
4027 && !create_sdata_sym (info, &htab->sdata[1]))
4028 return FALSE;
4029
046183de
AM		 4030 if (h != NULL)
4031 {
4032 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4033 h->non_got_ref = TRUE;
4034 }
4035 break;
4036
b9c361e0
JL		 4037 case R_PPC_VLE_REL8:
4038 case R_PPC_VLE_REL15:
4039 case R_PPC_VLE_REL24:
4040 case R_PPC_VLE_LO16A:
4041 case R_PPC_VLE_LO16D:
4042 case R_PPC_VLE_HI16A:
4043 case R_PPC_VLE_HI16D:
4044 case R_PPC_VLE_HA16A:
4045 case R_PPC_VLE_HA16D:
4046 break;
4047
25dbc73a 4048 case R_PPC_EMB_SDA2REL:
046183de
AM		 4049 if (info->shared)
4050 {
4051 bad_shared_reloc (abfd, r_type);
4052 return FALSE;
4053 }
4054 if (htab->sdata[1].sym == NULL
bd6c6e2b 4055 && !create_sdata_sym (info, &htab->sdata[1]))
046183de
AM		 4056 return FALSE;
4057 if (h != NULL)
4058 {
4059 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4060 h->non_got_ref = TRUE;
4061 }
4062 break;
4063
b9c361e0
JL		 4064 case R_PPC_VLE_SDA21_LO:
4065 case R_PPC_VLE_SDA21:
25dbc73a
AM		 4066 case R_PPC_EMB_SDA21:
4067 case R_PPC_EMB_RELSDA:
046183de
AM		 4068 if (info->shared)
4069 {
4070 bad_shared_reloc (abfd, r_type);
4071 return FALSE;
4072 }
4073 if (htab->sdata[0].sym == NULL
bd6c6e2b 4074 && !create_sdata_sym (info, &htab->sdata[0]))
046183de
AM		 4075 return FALSE;
4076 if (htab->sdata[1].sym == NULL
bd6c6e2b 4077 && !create_sdata_sym (info, &htab->sdata[1]))
046183de
AM		 4078 return FALSE;
4079 if (h != NULL)
4080 {
4081 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4082 h->non_got_ref = TRUE;
4083 }
4084 break;
4085
25dbc73a
AM		 4086 case R_PPC_EMB_NADDR32:
4087 case R_PPC_EMB_NADDR16:
4088 case R_PPC_EMB_NADDR16_LO:
4089 case R_PPC_EMB_NADDR16_HI:
4090 case R_PPC_EMB_NADDR16_HA:
4091 if (info->shared)
4092 {
4093 bad_shared_reloc (abfd, r_type);
4094 return FALSE;
4095 }
4dc4a9a5 4096 if (h != NULL)
046183de 4097 h->non_got_ref = TRUE;
25dbc73a 4098 break;
252b5132 4099
25dbc73a 4100 case R_PPC_PLTREL24:
de972ffa 4101 if (h == NULL)
6d78d0b9
AM		 4102 break;
4103 /* Fall through */
4104 case R_PPC_PLT32:
25dbc73a
AM		 4105 case R_PPC_PLTREL32:
4106 case R_PPC_PLT16_LO:
4107 case R_PPC_PLT16_HI:
4108 case R_PPC_PLT16_HA:
4109#ifdef DEBUG
4110 fprintf (stderr, "Reloc requires a PLT entry\n");
4111#endif
4112 /* This symbol requires a procedure linkage table entry. We
4113 actually build the entry in finish_dynamic_symbol,
4114 because this might be a case of linking PIC code without
4115 linking in any dynamic objects, in which case we don't
4116 need to generate a procedure linkage table after all. */
7619e7c7 4117
25dbc73a
AM		 4118 if (h == NULL)
4119 {
4120 /* It does not make sense to have a procedure linkage
4121 table entry for a local symbol. */
8de848d8 4122 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
25f53a85
AM		 4123 abfd, sec, rel->r_offset,
4124 ppc_elf_howto_table[r_type]->name);
25dbc73a
AM		 4125 bfd_set_error (bfd_error_bad_value);
4126 return FALSE;
4127 }
a6aa5195
AM		 4128 else
4129 {
016687f8 4130 bfd_vma addend = 0;
ee05f2fe 4131
016687f8
AM		 4132 if (r_type == R_PPC_PLTREL24)
4133 {
4134 ppc_elf_tdata (abfd)->makes_plt_call = 1;
a877a2b6
AM		 4135 if (info->shared)
4136 addend = rel->r_addend;
016687f8 4137 }
a6aa5195 4138 h->needs_plt = 1;
32af9f6e 4139 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM		 4140 return FALSE;
4141 }
25dbc73a 4142 break;
ee05f2fe 4143
25dbc73a
AM		 4144 /* The following relocations don't need to propagate the
4145 relocation if linking a shared object since they are
4146 section relative. */
4147 case R_PPC_SECTOFF:
4148 case R_PPC_SECTOFF_LO:
4149 case R_PPC_SECTOFF_HI:
4150 case R_PPC_SECTOFF_HA:
4151 case R_PPC_DTPREL16:
4152 case R_PPC_DTPREL16_LO:
4153 case R_PPC_DTPREL16_HI:
4154 case R_PPC_DTPREL16_HA:
4155 case R_PPC_TOC16:
4156 break;
252b5132 4157
d7128ce4
AM		 4158 case R_PPC_REL16:
4159 case R_PPC_REL16_LO:
4160 case R_PPC_REL16_HI:
4161 case R_PPC_REL16_HA:
016687f8 4162 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM		 4163 break;
4164
a6aa5195 4165 /* These are just markers. */
25dbc73a
AM		 4166 case R_PPC_TLS:
4167 case R_PPC_EMB_MRKREF:
4168 case R_PPC_NONE:
4169 case R_PPC_max:
32af9f6e
AM		 4170 case R_PPC_RELAX:
4171 case R_PPC_RELAX_PLT:
4172 case R_PPC_RELAX_PLTREL24:
25dbc73a 4173 break;
252b5132 4174
25dbc73a
AM		 4175 /* These should only appear in dynamic objects. */
4176 case R_PPC_COPY:
4177 case R_PPC_GLOB_DAT:
4178 case R_PPC_JMP_SLOT:
4179 case R_PPC_RELATIVE:
e054468f 4180 case R_PPC_IRELATIVE:
25dbc73a 4181 break;
252b5132 4182
25dbc73a
AM		 4183 /* These aren't handled yet. We'll report an error later. */
4184 case R_PPC_ADDR30:
4185 case R_PPC_EMB_RELSEC16:
4186 case R_PPC_EMB_RELST_LO:
4187 case R_PPC_EMB_RELST_HI:
4188 case R_PPC_EMB_RELST_HA:
4189 case R_PPC_EMB_BIT_FLD:
4190 break;
252b5132 4191
25dbc73a
AM		 4192 /* This refers only to functions defined in the shared library. */
4193 case R_PPC_LOCAL24PC:
727fc41e 4194 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM		 4195 {
4196 htab->plt_type = PLT_OLD;
4197 htab->old_bfd = abfd;
4198 }
25dbc73a 4199 break;
252b5132 4200
25dbc73a
AM		 4201 /* This relocation describes the C++ object vtable hierarchy.
4202 Reconstruct it for later use during GC. */
4203 case R_PPC_GNU_VTINHERIT:
4204 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4205 return FALSE;
4206 break;
252b5132 4207
25dbc73a
AM		 4208 /* This relocation describes which C++ vtable entries are actually
4209 used. Record for later use during GC. */
4210 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB		 4211 BFD_ASSERT (h != NULL);
4212 if (h != NULL
4213 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM		 4214 return FALSE;
4215 break;
252b5132 4216
25dbc73a
AM		 4217 /* We shouldn't really be seeing these. */
4218 case R_PPC_TPREL32:
1d483afe
AM		 4219 case R_PPC_TPREL16:
4220 case R_PPC_TPREL16_LO:
4221 case R_PPC_TPREL16_HI:
4222 case R_PPC_TPREL16_HA:
4223 if (!info->executable)
25dbc73a
AM		 4224 info->flags |= DF_STATIC_TLS;
4225 goto dodyn;
252b5132 4226
25dbc73a
AM		 4227 /* Nor these. */
4228 case R_PPC_DTPMOD32:
4229 case R_PPC_DTPREL32:
4230 goto dodyn;
252b5132 4231
9edfd1af
AM		 4232 case R_PPC_REL32:
4233 if (h == NULL
4234 && got2 != NULL
4235 && (sec->flags & SEC_CODE) != 0
a877a2b6 4236 && info->shared
4a3dc543 4237 && htab->plt_type == PLT_UNSET)
9edfd1af
AM		 4238 {
4239 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4240 the start of a function, which assembles to a REL32
4241 reference to .got2. If we detect one of these, then
4242 force the old PLT layout because the linker cannot
4243 reliably deduce the GOT pointer value needed for
4244 PLT call stubs. */
4245 asection *s;
87d72d41 4246 Elf_Internal_Sym *isym;
9edfd1af 4247
87d72d41
AM		 4248 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4249 abfd, r_symndx);
4250 if (isym == NULL)
4251 return FALSE;
4252
4253 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4254 if (s == got2)
016687f8
AM		 4255 {
4256 htab->plt_type = PLT_OLD;
4257 htab->old_bfd = abfd;
4258 }
9edfd1af 4259 }
7123df0e 4260 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4261 break;
625af618
AM		 4262 /* fall through */
4263
4264 case R_PPC_ADDR32:
4265 case R_PPC_ADDR16:
4266 case R_PPC_ADDR16_LO:
4267 case R_PPC_ADDR16_HI:
4268 case R_PPC_ADDR16_HA:
4269 case R_PPC_UADDR32:
4270 case R_PPC_UADDR16:
4271 if (h != NULL && !info->shared)
4272 {
4273 /* We may need a plt entry if the symbol turns out to be
4274 a function defined in a dynamic object. */
3ec01793 4275 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM		 4276 return FALSE;
4277
4278 /* We may need a copy reloc too. */
4279 h->non_got_ref = 1;
4280 h->pointer_equality_needed = 1;
4281 }
4282 goto dodyn;
9edfd1af 4283
25dbc73a
AM		 4284 case R_PPC_REL24:
4285 case R_PPC_REL14:
4286 case R_PPC_REL14_BRTAKEN:
4287 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4288 if (h == NULL)
25dbc73a 4289 break;
7123df0e 4290 if (h == htab->elf.hgot)
d7128ce4 4291 {
7123df0e 4292 if (htab->plt_type == PLT_UNSET)
016687f8
AM		 4293 {
4294 htab->plt_type = PLT_OLD;
4295 htab->old_bfd = abfd;
4296 }
d7128ce4
AM		 4297 break;
4298 }
25dbc73a 4299 /* fall through */
ee05f2fe 4300
25dbc73a 4301 case R_PPC_ADDR24:
25dbc73a
AM		 4302 case R_PPC_ADDR14:
4303 case R_PPC_ADDR14_BRTAKEN:
4304 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM		 4305 if (h != NULL && !info->shared)
4306 {
4307 /* We may need a plt entry if the symbol turns out to be
4308 a function defined in a dynamic object. */
e054468f 4309 h->needs_plt = 1;
de972ffa 4310 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4311 return FALSE;
625af618 4312 break;
25dbc73a 4313 }
7619e7c7 4314
25dbc73a
AM		 4315 dodyn:
4316 /* If we are creating a shared library, and this is a reloc
4317 against a global symbol, or a non PC relative reloc
4318 against a local symbol, then we need to copy the reloc
4319 into the shared library. However, if we are linking with
4320 -Bsymbolic, we do not need to copy a reloc against a
4321 global symbol which is defined in an object we are
4322 including in the link (i.e., DEF_REGULAR is set). At
4323 this point we have not seen all the input files, so it is
4324 possible that DEF_REGULAR is not set now but will be set
4325 later (it is never cleared). In case of a weak definition,
4326 DEF_REGULAR may be cleared later by a strong definition in
4327 a shared library. We account for that possibility below by
4328 storing information in the dyn_relocs field of the hash
4329 table entry. A similar situation occurs when creating
4330 shared libraries and symbol visibility changes render the
4331 symbol local.
7619e7c7 4332
25dbc73a
AM		 4333 If on the other hand, we are creating an executable, we
4334 may need to keep relocations for symbols satisfied by a
4335 dynamic library if we manage to avoid copy relocs for the
4336 symbol. */
4337 if ((info->shared
1d483afe 4338 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM		 4339 || (h != NULL
4340 && (! info->symbolic
4341 || h->root.type == bfd_link_hash_defweak
4342 || !h->def_regular))))
4343 || (ELIMINATE_COPY_RELOCS
4344 && !info->shared
25dbc73a
AM		 4345 && h != NULL
4346 && (h->root.type == bfd_link_hash_defweak
de972ffa 4347 || !h->def_regular)))
25dbc73a 4348 {
6061a67d
AM		 4349 struct elf_dyn_relocs *p;
4350 struct elf_dyn_relocs **rel_head;
7619e7c7 4351
25dbc73a
AM		 4352#ifdef DEBUG
4353 fprintf (stderr,
4354 "ppc_elf_check_relocs needs to "
4355 "create relocation for %s\n",
4356 (h && h->root.root.string
4357 ? h->root.root.string : "<unknown>"));
4358#endif
4359 if (sreloc == NULL)
4360 {
c9a2f333
AM		 4361 if (htab->elf.dynobj == NULL)
4362 htab->elf.dynobj = abfd;
83bac4b0
NC		 4363
4364 sreloc = _bfd_elf_make_dynamic_reloc_section
4365 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4366
25dbc73a 4367 if (sreloc == NULL)
83bac4b0 4368 return FALSE;
25dbc73a 4369 }
7619e7c7 4370
25dbc73a
AM		 4371 /* If this is a global symbol, we count the number of
4372 relocations we need for this symbol. */
4373 if (h != NULL)
4374 {
91d6fa6a 4375 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
25dbc73a
AM		 4376 }
4377 else
4378 {
4379 /* Track dynamic relocs needed for local syms too.
4380 We really need local syms available to do this
4381 easily. Oh well. */
25dbc73a 4382 asection *s;
6edfbbad 4383 void *vpp;
87d72d41 4384 Elf_Internal_Sym *isym;
6edfbbad 4385
87d72d41
AM		 4386 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4387 abfd, r_symndx);
4388 if (isym == NULL)
25dbc73a 4389 return FALSE;
7fce784e 4390
87d72d41
AM		 4391 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4392 if (s == NULL)
4393 s = sec;
4394
6edfbbad 4395 vpp = &elf_section_data (s)->local_dynrel;
6061a67d 4396 rel_head = (struct elf_dyn_relocs **) vpp;
25dbc73a 4397 }
7fce784e 4398
91d6fa6a 4399 p = *rel_head;
25dbc73a
AM		 4400 if (p == NULL || p->sec != sec)
4401 {
4402 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4403 if (p == NULL)
4404 return FALSE;
91d6fa6a
NC		 4405 p->next = *rel_head;
4406 *rel_head = p;
25dbc73a
AM		 4407 p->sec = sec;
4408 p->count = 0;
4409 p->pc_count = 0;
4410 }
4411
4412 p->count += 1;
1d483afe 4413 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 4414 p->pc_count += 1;
7619e7c7 4415 }
25dbc73a
AM		 4416
4417 break;
7619e7c7
AM		 4418 }
4419 }
ee05f2fe 4420
25dbc73a
AM		 4421 return TRUE;
4422}
4423\f
34c8bcba
JM		 4424
4425/* Merge object attributes from IBFD into OBFD. Raise an error if
4426 there are conflicting attributes. */
4427static bfd_boolean
4428ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4429{
c6e65352
DJ		 4430 obj_attribute *in_attr, *in_attrs;
4431 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM		 4432
4433 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4434 {
4435 /* This is the first object. Copy the attributes. */
4436 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4437
4438 /* Use the Tag_null value to indicate the attributes have been
4439 initialized. */
4440 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4441
4442 return TRUE;
4443 }
4444
c6e65352
DJ		 4445 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4446 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4447
34c8bcba
JM		 4448 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4449 non-conflicting ones. */
c6e65352
DJ		 4450 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4451 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4452 if (in_attr->i != out_attr->i)
34c8bcba 4453 {
c6e65352
DJ		 4454 out_attr->type = 1;
4455 if (out_attr->i == 0)
4456 out_attr->i = in_attr->i;
4457 else if (in_attr->i == 0)
34c8bcba 4458 ;
c6e65352 4459 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM		 4460 _bfd_error_handler
4461 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM		 4462 else if (out_attr->i == 1 && in_attr->i == 3)
4463 _bfd_error_handler
5b914448 4464 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM		 4465 obfd, ibfd);
4466 else if (out_attr->i == 3 && in_attr->i == 1)
4467 _bfd_error_handler
5b914448 4468 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM		 4469 ibfd, obfd);
4470 else if (out_attr->i == 3 && in_attr->i == 2)
4471 _bfd_error_handler
5b914448 4472 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3c7b9897
AM		 4473 ibfd, obfd);
4474 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM		 4475 _bfd_error_handler
4476 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4477 else if (in_attr->i > 3)
34c8bcba
JM		 4478 _bfd_error_handler
4479 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4480 in_attr->i);
34c8bcba
JM		 4481 else
4482 _bfd_error_handler
4483 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ		 4484 out_attr->i);
4485 }
4486
4487 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4488 merge non-conflicting ones. */
4489 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4490 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4491 if (in_attr->i != out_attr->i)
4492 {
4493 const char *in_abi = NULL, *out_abi = NULL;
4494
4495 switch (in_attr->i)
4496 {
4497 case 1: in_abi = "generic"; break;
4498 case 2: in_abi = "AltiVec"; break;
4499 case 3: in_abi = "SPE"; break;
4500 }
4501
4502 switch (out_attr->i)
4503 {
4504 case 1: out_abi = "generic"; break;
4505 case 2: out_abi = "AltiVec"; break;
4506 case 3: out_abi = "SPE"; break;
4507 }
4508
4509 out_attr->type = 1;
4510 if (out_attr->i == 0)
4511 out_attr->i = in_attr->i;
4512 else if (in_attr->i == 0)
4513 ;
4514 /* For now, allow generic to transition to AltiVec or SPE
4515 without a warning. If GCC marked files with their stack
4516 alignment and used don't-care markings for files which are
4517 not affected by the vector ABI, we could warn about this
4518 case too. */
4519 else if (out_attr->i == 1)
4520 out_attr->i = in_attr->i;
4521 else if (in_attr->i == 1)
4522 ;
4523 else if (in_abi == NULL)
4524 _bfd_error_handler
4525 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4526 in_attr->i);
4527 else if (out_abi == NULL)
4528 _bfd_error_handler
4529 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4530 in_attr->i);
4531 else
4532 _bfd_error_handler
4533 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4534 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM		 4535 }
4536
f82e0623
NF		 4537 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4538 and merge non-conflicting ones. */
4539 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4540 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4541 if (in_attr->i != out_attr->i)
4542 {
4543 out_attr->type = 1;
4544 if (out_attr->i == 0)
4545 out_attr->i = in_attr->i;
4546 else if (in_attr->i == 0)
4547 ;
4548 else if (out_attr->i == 1 && in_attr->i == 2)
4549 _bfd_error_handler
4550 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4551 else if (out_attr->i == 2 && in_attr->i == 1)
4552 _bfd_error_handler
4553 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4554 else if (in_attr->i > 2)
4555 _bfd_error_handler
4556 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4557 in_attr->i);
4558 else
4559 _bfd_error_handler
4560 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4561 out_attr->i);
4562 }
4563
34c8bcba
JM		 4564 /* Merge Tag_compatibility attributes and any common GNU ones. */
4565 _bfd_elf_merge_object_attributes (ibfd, obfd);
4566
4567 return TRUE;
4568}
4569
8853c3d3
AM		 4570/* Merge backend specific data from an object file to the output
4571 object file when linking. */
4572
4573static bfd_boolean
4574ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4575{
4576 flagword old_flags;
4577 flagword new_flags;
4578 bfd_boolean error;
4579
0c8d6e5c 4580 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM		 4581 return TRUE;
4582
cc643b88 4583 /* Check if we have the same endianness. */
8853c3d3
AM		 4584 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4585 return FALSE;
4586
34c8bcba
JM		 4587 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4588 return FALSE;
4589
8853c3d3
AM		 4590 new_flags = elf_elfheader (ibfd)->e_flags;
4591 old_flags = elf_elfheader (obfd)->e_flags;
4592 if (!elf_flags_init (obfd))
4593 {
4594 /* First call, no flags set. */
4595 elf_flags_init (obfd) = TRUE;
4596 elf_elfheader (obfd)->e_flags = new_flags;
4597 }
4598
4599 /* Compatible flags are ok. */
4600 else if (new_flags == old_flags)
4601 ;
4602
4603 /* Incompatible flags. */
4604 else
4605 {
4606 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4607 to be linked with either. */
4608 error = FALSE;
4609 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4610 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4611 {
4612 error = TRUE;
4613 (*_bfd_error_handler)
4614 (_("%B: compiled with -mrelocatable and linked with "
4615 "modules compiled normally"), ibfd);
4616 }
4617 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4618 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4619 {
4620 error = TRUE;
4621 (*_bfd_error_handler)
4622 (_("%B: compiled normally and linked with "
4623 "modules compiled with -mrelocatable"), ibfd);
4624 }
4625
4626 /* The output is -mrelocatable-lib iff both the input files are. */
4627 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4628 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4629
4630 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4631 but each input file is either -mrelocatable or -mrelocatable-lib. */
4632 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4633 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4634 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4635 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4636
4637 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4638 any module uses it. */
4639 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4640
4641 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4642 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4643
4644 /* Warn about any other mismatches. */
4645 if (new_flags != old_flags)
4646 {
4647 error = TRUE;
4648 (*_bfd_error_handler)
4649 (_("%B: uses different e_flags (0x%lx) fields "
4650 "than previous modules (0x%lx)"),
4651 ibfd, (long) new_flags, (long) old_flags);
4652 }
4653
4654 if (error)
4655 {
4656 bfd_set_error (bfd_error_bad_value);
4657 return FALSE;
4658 }
4659 }
4660
4661 return TRUE;
4662}
b9c361e0
JL		 4663
4664static void
4665ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4666 bfd_vma offset, bfd_vma relocation,
4667 split16_format_type split16_format)
4668
4669{
4670 bfd_vma insn, top5, bottom11;
4671
4672 insn = bfd_get_32 (output_bfd, contents + offset);
4673 top5 = relocation >> 11;
4674 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4675 bottom11 = relocation & 0x7ff;
4676 insn |= top5;
4677 insn |= bottom11;
4678 bfd_put_32 (output_bfd, insn, contents + offset);
4679}
4680
8853c3d3 4681\f
d7128ce4
AM		 4682/* Choose which PLT scheme to use, and set .plt flags appropriately.
4683 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4684int
4685ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4686 struct bfd_link_info *info,
016687f8 4687 enum ppc_elf_plt_type plt_style,
0ba07910 4688 int emit_stub_syms)
d7128ce4
AM		 4689{
4690 struct ppc_elf_link_hash_table *htab;
9d8504b1 4691 flagword flags;
d7128ce4
AM		 4692
4693 htab = ppc_elf_hash_table (info);
4a3dc543 4694
a7f2871e
AM		 4695 htab->emit_stub_syms = emit_stub_syms;
4696
4a3dc543 4697 if (htab->plt_type == PLT_UNSET)
016687f8 4698 {
b3874e1a
AM		 4699 struct elf_link_hash_entry *h;
4700
016687f8
AM		 4701 if (plt_style == PLT_OLD)
4702 htab->plt_type = PLT_OLD;
b3874e1a
AM		 4703 else if (info->shared
4704 && htab->elf.dynamic_sections_created
4705 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4706 FALSE, FALSE, TRUE)) != NULL
4707 && (h->type == STT_FUNC
4708 || h->needs_plt)
4709 && h->ref_regular
4710 && !(SYMBOL_CALLS_LOCAL (info, h)
4711 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4712 && h->root.type == bfd_link_hash_undefweak)))
4713 {
4714 /* Profiling of shared libs (and pies) is not supported with
4715 secure plt, because ppc32 does profiling before a
4716 function prologue and a secure plt pic call stubs needs
4717 r30 to be set up. */
4718 htab->plt_type = PLT_OLD;
4719 }
016687f8
AM		 4720 else
4721 {
4722 bfd *ibfd;
4723 enum ppc_elf_plt_type plt_type = plt_style;
4724
4725 /* Look through the reloc flags left by ppc_elf_check_relocs.
4726 Use the old style bss plt if a file makes plt calls
4727 without using the new relocs, and if ld isn't given
4728 --secure-plt and we never see REL16 relocs. */
4729 if (plt_type == PLT_UNSET)
4730 plt_type = PLT_OLD;
60b31e8d 4731 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4732 if (is_ppc_elf (ibfd))
016687f8
AM		 4733 {
4734 if (ppc_elf_tdata (ibfd)->has_rel16)
4735 plt_type = PLT_NEW;
4736 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4737 {
4738 plt_type = PLT_OLD;
4739 htab->old_bfd = ibfd;
4740 break;
4741 }
4742 }
4743 htab->plt_type = plt_type;
4744 }
4745 }
4746 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
b3874e1a
AM		 4747 {
4748 if (htab->old_bfd != NULL)
4749 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4750 htab->old_bfd);
4751 else
4752 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4753 }
d7128ce4 4754
4a3dc543 4755 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4756
4a3dc543 4757 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 4758 {
4759 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4760 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM		 4761
4762 /* The new PLT is a loaded section. */
4763 if (htab->plt != NULL
4764 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4765 return -1;
4766
4767 /* The new GOT is not executable. */
4768 if (htab->got != NULL
4769 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4770 return -1;
d7128ce4
AM		 4771 }
4772 else
4773 {
4774 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM		 4775 if (htab->glink != NULL
4776 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4777 return -1;
d7128ce4 4778 }
4a3dc543 4779 return htab->plt_type == PLT_NEW;
d7128ce4
AM		 4780}
4781\f
25dbc73a
AM		 4782/* Return the section that should be marked against GC for a given
4783 relocation. */
586119b3 4784
25dbc73a
AM		 4785static asection *
4786ppc_elf_gc_mark_hook (asection *sec,
07adf181 4787 struct bfd_link_info *info,
25dbc73a
AM		 4788 Elf_Internal_Rela *rel,
4789 struct elf_link_hash_entry *h,
4790 Elf_Internal_Sym *sym)
4791{
4792 if (h != NULL)
07adf181
AM		 4793 switch (ELF32_R_TYPE (rel->r_info))
4794 {
4795 case R_PPC_GNU_VTINHERIT:
4796 case R_PPC_GNU_VTENTRY:
4797 return NULL;
4798 }
4799
4800 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4801}
a876ecf9 4802
25dbc73a
AM		 4803/* Update the got, plt and dynamic reloc reference counts for the
4804 section being removed. */
4805
4806static bfd_boolean
4807ppc_elf_gc_sweep_hook (bfd *abfd,
4808 struct bfd_link_info *info,
4809 asection *sec,
4810 const Elf_Internal_Rela *relocs)
4811{
4812 struct ppc_elf_link_hash_table *htab;
4813 Elf_Internal_Shdr *symtab_hdr;
4814 struct elf_link_hash_entry **sym_hashes;
4815 bfd_signed_vma *local_got_refcounts;
4816 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4817 asection *got2;
25dbc73a 4818
7dda2462
TG		 4819 if (info->relocatable)
4820 return TRUE;
4821
c87b5a93
AM		 4822 if ((sec->flags & SEC_ALLOC) == 0)
4823 return TRUE;
4824
25dbc73a
AM		 4825 elf_section_data (sec)->local_dynrel = NULL;
4826
4827 htab = ppc_elf_hash_table (info);
0ffa91dd 4828 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM		 4829 sym_hashes = elf_sym_hashes (abfd);
4830 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4831 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 4832
4833 relend = relocs + sec->reloc_count;
4834 for (rel = relocs; rel < relend; rel++)
4835 {
4836 unsigned long r_symndx;
4837 enum elf_ppc_reloc_type r_type;
4838 struct elf_link_hash_entry *h = NULL;
4839
4840 r_symndx = ELF32_R_SYM (rel->r_info);
4841 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4842 {
6061a67d 4843 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM		 4844 struct ppc_elf_link_hash_entry *eh;
4845
4846 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4847 while (h->root.type == bfd_link_hash_indirect
4848 || h->root.type == bfd_link_hash_warning)
4849 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4850 eh = (struct ppc_elf_link_hash_entry *) h;
4851
4852 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4853 if (p->sec == sec)
4854 {
4855 /* Everything must go for SEC. */
4856 *pp = p->next;
4857 break;
4858 }
a876ecf9 4859 }
ee05f2fe 4860
25dbc73a 4861 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM		 4862 if (!htab->is_vxworks
4863 && h == NULL
4864 && local_got_refcounts != NULL
4865 && (!info->shared
4866 || is_branch_reloc (r_type)))
e054468f 4867 {
de972ffa
AM		 4868 struct plt_entry **local_plt = (struct plt_entry **)
4869 (local_got_refcounts + symtab_hdr->sh_info);
4870 char *local_got_tls_masks = (char *)
4871 (local_plt + symtab_hdr->sh_info);
4872 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 4873 {
de972ffa 4874 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM		 4875 bfd_vma addend = 0;
4876 struct plt_entry *ent;
4877
4878 if (r_type == R_PPC_PLTREL24 && info->shared)
4879 addend = rel->r_addend;
4880 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM		 4881 if (ent->plt.refcount > 0)
4882 ent->plt.refcount -= 1;
4883 continue;
4884 }
4885 }
4886
25dbc73a 4887 switch (r_type)
ee05f2fe 4888 {
25dbc73a
AM		 4889 case R_PPC_GOT_TLSLD16:
4890 case R_PPC_GOT_TLSLD16_LO:
4891 case R_PPC_GOT_TLSLD16_HI:
4892 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM		 4893 case R_PPC_GOT_TLSGD16:
4894 case R_PPC_GOT_TLSGD16_LO:
4895 case R_PPC_GOT_TLSGD16_HI:
4896 case R_PPC_GOT_TLSGD16_HA:
4897 case R_PPC_GOT_TPREL16:
4898 case R_PPC_GOT_TPREL16_LO:
4899 case R_PPC_GOT_TPREL16_HI:
4900 case R_PPC_GOT_TPREL16_HA:
4901 case R_PPC_GOT_DTPREL16:
4902 case R_PPC_GOT_DTPREL16_LO:
4903 case R_PPC_GOT_DTPREL16_HI:
4904 case R_PPC_GOT_DTPREL16_HA:
4905 case R_PPC_GOT16:
4906 case R_PPC_GOT16_LO:
4907 case R_PPC_GOT16_HI:
4908 case R_PPC_GOT16_HA:
4909 if (h != NULL)
ee05f2fe 4910 {
25dbc73a
AM		 4911 if (h->got.refcount > 0)
4912 h->got.refcount--;
91e21fb7
AM		 4913 if (!info->shared)
4914 {
4915 struct plt_entry *ent;
4916
4917 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 4918 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM		 4919 ent->plt.refcount -= 1;
4920 }
ee05f2fe 4921 }
25dbc73a
AM		 4922 else if (local_got_refcounts != NULL)
4923 {
4924 if (local_got_refcounts[r_symndx] > 0)
4925 local_got_refcounts[r_symndx]--;
4926 }
4927 break;
ee05f2fe 4928
25dbc73a
AM		 4929 case R_PPC_REL24:
4930 case R_PPC_REL14:
4931 case R_PPC_REL14_BRTAKEN:
4932 case R_PPC_REL14_BRNTAKEN:
4933 case R_PPC_REL32:
3b36f7e6 4934 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM		 4935 break;
4936 /* Fall thru */
ee05f2fe 4937
25dbc73a
AM		 4938 case R_PPC_ADDR32:
4939 case R_PPC_ADDR24:
4940 case R_PPC_ADDR16:
4941 case R_PPC_ADDR16_LO:
4942 case R_PPC_ADDR16_HI:
4943 case R_PPC_ADDR16_HA:
4944 case R_PPC_ADDR14:
4945 case R_PPC_ADDR14_BRTAKEN:
4946 case R_PPC_ADDR14_BRNTAKEN:
4947 case R_PPC_UADDR32:
4948 case R_PPC_UADDR16:
87538722
AM		 4949 if (info->shared)
4950 break;
4951
25dbc73a
AM		 4952 case R_PPC_PLT32:
4953 case R_PPC_PLTREL24:
87538722 4954 case R_PPC_PLTREL32:
25dbc73a
AM		 4955 case R_PPC_PLT16_LO:
4956 case R_PPC_PLT16_HI:
4957 case R_PPC_PLT16_HA:
4958 if (h != NULL)
4959 {
a877a2b6
AM		 4960 bfd_vma addend = 0;
4961 struct plt_entry *ent;
4962
4963 if (r_type == R_PPC_PLTREL24 && info->shared)
4964 addend = rel->r_addend;
4965 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 4966 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 4967 ent->plt.refcount -= 1;
25dbc73a
AM		 4968 }
4969 break;
ee05f2fe 4970
25dbc73a
AM		 4971 default:
4972 break;
4973 }
7fce784e 4974 }
7fce784e
AS		 4975 return TRUE;
4976}
25dbc73a 4977\f
3a71aa26
AM		 4978/* Set plt output section type, htab->tls_get_addr, and call the
4979 generic ELF tls_setup function. */
7fce784e 4980
25dbc73a 4981asection *
a7f2871e
AM		 4982ppc_elf_tls_setup (bfd *obfd,
4983 struct bfd_link_info *info,
4984 int no_tls_get_addr_opt)
7fce784e 4985{
25dbc73a 4986 struct ppc_elf_link_hash_table *htab;
7fce784e 4987
25dbc73a 4988 htab = ppc_elf_hash_table (info);
a7f2871e
AM		 4989 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4990 FALSE, FALSE, TRUE);
4991 if (!no_tls_get_addr_opt)
4992 {
4993 struct elf_link_hash_entry *opt, *tga;
4994 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4995 FALSE, FALSE, TRUE);
4996 if (opt != NULL
4997 && (opt->root.type == bfd_link_hash_defined
4998 || opt->root.type == bfd_link_hash_defweak))
4999 {
5000 /* If glibc supports an optimized __tls_get_addr call stub,
5001 signalled by the presence of __tls_get_addr_opt, and we'll
5002 be calling __tls_get_addr via a plt call stub, then
5003 make __tls_get_addr point to __tls_get_addr_opt. */
5004 tga = htab->tls_get_addr;
5005 if (htab->elf.dynamic_sections_created
5006 && tga != NULL
5007 && (tga->type == STT_FUNC
5008 || tga->needs_plt)
5009 && !(SYMBOL_CALLS_LOCAL (info, tga)
5010 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5011 && tga->root.type == bfd_link_hash_undefweak)))
5012 {
5013 struct plt_entry *ent;
32af9f6e
AM		 5014 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5015 if (ent->plt.refcount > 0)
5016 break;
5017 if (ent != NULL)
a7f2871e
AM		 5018 {
5019 tga->root.type = bfd_link_hash_indirect;
5020 tga->root.u.i.link = &opt->root;
5021 ppc_elf_copy_indirect_symbol (info, opt, tga);
5022 if (opt->dynindx != -1)
5023 {
5024 /* Use __tls_get_addr_opt in dynamic relocations. */
5025 opt->dynindx = -1;
5026 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5027 opt->dynstr_index);
5028 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5029 return FALSE;
5030 }
5031 htab->tls_get_addr = opt;
5032 }
5033 }
5034 }
5035 else
5036 no_tls_get_addr_opt = TRUE;
5037 }
5038 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4a3dc543 5039 if (htab->plt_type == PLT_NEW
d7128ce4
AM		 5040 && htab->plt != NULL
5041 && htab->plt->output_section != NULL)
5042 {
5043 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5044 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5045 }
5046
25dbc73a 5047 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS		 5048}
5049
3a71aa26
AM		 5050/* Return TRUE iff REL is a branch reloc with a global symbol matching
5051 HASH. */
5052
5053static bfd_boolean
5054branch_reloc_hash_match (const bfd *ibfd,
5055 const Elf_Internal_Rela *rel,
5056 const struct elf_link_hash_entry *hash)
5057{
5058 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5059 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5060 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5061
e054468f 5062 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM		 5063 {
5064 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5065 struct elf_link_hash_entry *h;
5066
5067 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5068 while (h->root.type == bfd_link_hash_indirect
5069 || h->root.type == bfd_link_hash_warning)
5070 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5071 if (h == hash)
5072 return TRUE;
5073 }
5074 return FALSE;
5075}
5076
25dbc73a
AM		 5077/* Run through all the TLS relocs looking for optimization
5078 opportunities. */
252b5132 5079
25dbc73a
AM		 5080bfd_boolean
5081ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5082 struct bfd_link_info *info)
252b5132 5083{
7fce784e 5084 bfd *ibfd;
25dbc73a
AM		 5085 asection *sec;
5086 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5087 int pass;
252b5132 5088
1d483afe 5089 if (info->relocatable || !info->executable)
25dbc73a 5090 return TRUE;
252b5132 5091
7619e7c7 5092 htab = ppc_elf_hash_table (info);
663a1470
AM		 5093 if (htab == NULL)
5094 return FALSE;
5095
b7fcf6f6
AM		 5096 /* Make two passes through the relocs. First time check that tls
5097 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM		 5098 followed by such a call. If they are not, don't do any tls
5099 optimization. On the second pass twiddle tls_mask flags to
5100 notify relocate_section that optimization can be done, and
5101 adjust got and plt refcounts. */
b7fcf6f6
AM		 5102 for (pass = 0; pass < 2; ++pass)
5103 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5104 {
5105 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5106 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5107 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5108
b7fcf6f6
AM		 5109 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5110 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5111 {
5112 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5113 int expecting_tls_get_addr = 0;
252b5132 5114
b7fcf6f6
AM		 5115 /* Read the relocations. */
5116 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5117 info->keep_memory);
5118 if (relstart == NULL)
5119 return FALSE;
7619e7c7 5120
b7fcf6f6
AM		 5121 relend = relstart + sec->reloc_count;
5122 for (rel = relstart; rel < relend; rel++)
5123 {
5124 enum elf_ppc_reloc_type r_type;
5125 unsigned long r_symndx;
5126 struct elf_link_hash_entry *h = NULL;
5127 char *tls_mask;
5128 char tls_set, tls_clear;
5129 bfd_boolean is_local;
b7fcf6f6
AM		 5130 bfd_signed_vma *got_count;
5131
5132 r_symndx = ELF32_R_SYM (rel->r_info);
5133 if (r_symndx >= symtab_hdr->sh_info)
5134 {
5135 struct elf_link_hash_entry **sym_hashes;
7fce784e 5136
b7fcf6f6
AM		 5137 sym_hashes = elf_sym_hashes (ibfd);
5138 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5139 while (h->root.type == bfd_link_hash_indirect
5140 || h->root.type == bfd_link_hash_warning)
5141 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5142 }
7619e7c7 5143
b7fcf6f6
AM		 5144 is_local = FALSE;
5145 if (h == NULL
5146 || !h->def_dynamic)
5147 is_local = TRUE;
7619e7c7 5148
b7fcf6f6 5149 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM		 5150 /* If this section has old-style __tls_get_addr calls
5151 without marker relocs, then check that each
5152 __tls_get_addr call reloc is preceded by a reloc
5153 that conceivably belongs to the __tls_get_addr arg
5154 setup insn. If we don't find matching arg setup
5155 relocs, don't do any tls optimization. */
5156 if (pass == 0
5157 && sec->has_tls_get_addr_call
5158 && h != NULL
5159 && h == htab->tls_get_addr
5160 && !expecting_tls_get_addr
5161 && is_branch_reloc (r_type))
5162 {
25f53a85 5163 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM		 5164 "TLS optimization disabled\n",
5165 ibfd, sec, rel->r_offset);
5166 if (elf_section_data (sec)->relocs != relstart)
5167 free (relstart);
5168 return TRUE;
5169 }
5170
5171 expecting_tls_get_addr = 0;
b7fcf6f6
AM		 5172 switch (r_type)
5173 {
5174 case R_PPC_GOT_TLSLD16:
5175 case R_PPC_GOT_TLSLD16_LO:
5176 expecting_tls_get_addr = 1;
5177 /* Fall thru */
5178
5179 case R_PPC_GOT_TLSLD16_HI:
5180 case R_PPC_GOT_TLSLD16_HA:
5181 /* These relocs should never be against a symbol
5182 defined in a shared lib. Leave them alone if
5183 that turns out to be the case. */
5184 if (!is_local)
5185 continue;
5186
5187 /* LD -> LE */
5188 tls_set = 0;
5189 tls_clear = TLS_LD;
5190 break;
5191
5192 case R_PPC_GOT_TLSGD16:
5193 case R_PPC_GOT_TLSGD16_LO:
5194 expecting_tls_get_addr = 1;
5195 /* Fall thru */
5196
5197 case R_PPC_GOT_TLSGD16_HI:
5198 case R_PPC_GOT_TLSGD16_HA:
5199 if (is_local)
5200 /* GD -> LE */
5201 tls_set = 0;
5202 else
5203 /* GD -> IE */
5204 tls_set = TLS_TLS | TLS_TPRELGD;
5205 tls_clear = TLS_GD;
5206 break;
5207
5208 case R_PPC_GOT_TPREL16:
5209 case R_PPC_GOT_TPREL16_LO:
5210 case R_PPC_GOT_TPREL16_HI:
5211 case R_PPC_GOT_TPREL16_HA:
5212 if (is_local)
5213 {
5214 /* IE -> LE */
5215 tls_set = 0;
5216 tls_clear = TLS_TPREL;
5217 break;
5218 }
5219 else
5220 continue;
5221
32af9f6e
AM		 5222 case R_PPC_TLSGD:
5223 case R_PPC_TLSLD:
5224 expecting_tls_get_addr = 2;
5225 tls_set = 0;
5226 tls_clear = 0;
5227 break;
5228
b7fcf6f6 5229 default:
25dbc73a 5230 continue;
b7fcf6f6 5231 }
25dbc73a 5232
b7fcf6f6
AM		 5233 if (pass == 0)
5234 {
727fc41e 5235 if (!expecting_tls_get_addr
32af9f6e
AM		 5236 || (expecting_tls_get_addr == 1
5237 && !sec->has_tls_get_addr_call))
b7fcf6f6 5238 continue;
25dbc73a 5239
3a71aa26
AM		 5240 if (rel + 1 < relend
5241 && branch_reloc_hash_match (ibfd, rel + 1,
5242 htab->tls_get_addr))
5243 continue;
25dbc73a 5244
b7fcf6f6
AM		 5245 /* Uh oh, we didn't find the expected call. We
5246 could just mark this symbol to exclude it
5247 from tls optimization but it's safer to skip
663a1470 5248 the entire optimization. */
25f53a85 5249 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 5250 "TLS optimization disabled\n"),
5251 ibfd, sec, rel->r_offset);
5252 if (elf_section_data (sec)->relocs != relstart)
5253 free (relstart);
5254 return TRUE;
b7fcf6f6 5255 }
25dbc73a 5256
32af9f6e
AM		 5257 if (expecting_tls_get_addr)
5258 {
5259 struct plt_entry *ent;
5260 bfd_vma addend = 0;
5261
5262 if (info->shared
5263 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5264 addend = rel[1].r_addend;
5265 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5266 got2, addend);
5267 if (ent != NULL && ent->plt.refcount > 0)
5268 ent->plt.refcount -= 1;
5269
5270 if (expecting_tls_get_addr == 2)
5271 continue;
5272 }
5273
b7fcf6f6
AM		 5274 if (h != NULL)
5275 {
5276 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5277 got_count = &h->got.refcount;
5278 }
5279 else
5280 {
b7fcf6f6 5281 bfd_signed_vma *lgot_refs;
e054468f 5282 struct plt_entry **local_plt;
b7fcf6f6 5283 char *lgot_masks;
25dbc73a 5284
b7fcf6f6
AM		 5285 if (locsyms == NULL)
5286 {
5287 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5288 if (locsyms == NULL)
5289 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5290 symtab_hdr->sh_info,
5291 0, NULL, NULL, NULL);
5292 if (locsyms == NULL)
5293 {
5294 if (elf_section_data (sec)->relocs != relstart)
5295 free (relstart);
5296 return FALSE;
5297 }
5298 }
b7fcf6f6
AM		 5299 lgot_refs = elf_local_got_refcounts (ibfd);
5300 if (lgot_refs == NULL)
5301 abort ();
e054468f
AM		 5302 local_plt = (struct plt_entry **)
5303 (lgot_refs + symtab_hdr->sh_info);
5304 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM		 5305 tls_mask = &lgot_masks[r_symndx];
5306 got_count = &lgot_refs[r_symndx];
5307 }
25dbc73a 5308
b7fcf6f6
AM		 5309 if (tls_set == 0)
5310 {
5311 /* We managed to get rid of a got entry. */
5312 if (*got_count > 0)
5313 *got_count -= 1;
5314 }
25dbc73a 5315
b7fcf6f6
AM		 5316 *tls_mask |= tls_set;
5317 *tls_mask &= ~tls_clear;
5318 }
25dbc73a 5319
b7fcf6f6
AM		 5320 if (elf_section_data (sec)->relocs != relstart)
5321 free (relstart);
5322 }
5323
5324 if (locsyms != NULL
5325 && (symtab_hdr->contents != (unsigned char *) locsyms))
5326 {
5327 if (!info->keep_memory)
5328 free (locsyms);
5329 else
5330 symtab_hdr->contents = (unsigned char *) locsyms;
5331 }
5332 }
25dbc73a
AM		 5333 return TRUE;
5334}
5335\f
625af618
AM		 5336/* Return true if we have dynamic relocs that apply to read-only sections. */
5337
5338static bfd_boolean
5339readonly_dynrelocs (struct elf_link_hash_entry *h)
5340{
6061a67d 5341 struct elf_dyn_relocs *p;
625af618
AM		 5342
5343 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5344 {
5345 asection *s = p->sec->output_section;
5346
5347 if (s != NULL
5348 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5349 == (SEC_READONLY | SEC_ALLOC)))
5350 return TRUE;
5351 }
5352 return FALSE;
5353}
5354
25dbc73a
AM		 5355/* Adjust a symbol defined by a dynamic object and referenced by a
5356 regular object. The current definition is in some section of the
5357 dynamic object, but we're not including those sections. We have to
5358 change the definition to something the rest of the link can
5359 understand. */
7fce784e 5360
25dbc73a
AM		 5361static bfd_boolean
5362ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5363 struct elf_link_hash_entry *h)
5364{
5365 struct ppc_elf_link_hash_table *htab;
5366 asection *s;
7fce784e 5367
25dbc73a
AM		 5368#ifdef DEBUG
5369 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5370 h->root.root.string);
5371#endif
252b5132 5372
25dbc73a
AM		 5373 /* Make sure we know what is going on here. */
5374 htab = ppc_elf_hash_table (info);
5375 BFD_ASSERT (htab->elf.dynobj != NULL
5376 && (h->needs_plt
91e21fb7 5377 || h->type == STT_GNU_IFUNC
25dbc73a
AM		 5378 || h->u.weakdef != NULL
5379 || (h->def_dynamic
5380 && h->ref_regular
5381 && !h->def_regular)));
252b5132 5382
25dbc73a
AM		 5383 /* Deal with function syms. */
5384 if (h->type == STT_FUNC
e054468f 5385 || h->type == STT_GNU_IFUNC
25dbc73a
AM		 5386 || h->needs_plt)
5387 {
5388 /* Clear procedure linkage table information for any symbol that
5389 won't need a .plt entry. */
a6aa5195
AM		 5390 struct plt_entry *ent;
5391 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5392 if (ent->plt.refcount > 0)
5393 break;
5394 if (ent == NULL
e054468f
AM		 5395 || (h->type != STT_GNU_IFUNC
5396 && (SYMBOL_CALLS_LOCAL (info, h)
5397 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5398 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5399 {
25dbc73a 5400 /* A PLT entry is not required/allowed when:
252b5132 5401
25dbc73a
AM		 5402 1. We are not using ld.so; because then the PLT entry
5403 can't be set up, so we can't use one. In this case,
5404 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5405
25dbc73a
AM		 5406 2. GC has rendered the entry unused.
5407
5408 3. We know for certain that a call to this symbol
5409 will go to this object, or will remain undefined. */
a6aa5195 5410 h->plt.plist = NULL;
25dbc73a
AM		 5411 h->needs_plt = 0;
5412 }
625af618
AM		 5413 else
5414 {
25f23106
AM		 5415 /* After adjust_dynamic_symbol, non_got_ref set in the
5416 non-shared case means that we have allocated space in
5417 .dynbss for the symbol and thus dyn_relocs for this
5418 symbol should be discarded.
625af618
AM		 5419 If we get here we know we are making a PLT entry for this
5420 symbol, and in an executable we'd normally resolve
5421 relocations against this symbol to the PLT entry. Allow
5422 dynamic relocs if the reference is weak, and the dynamic
5423 relocs will not cause text relocation. */
5424 if (!h->ref_regular_nonweak
5425 && h->non_got_ref
25f23106 5426 && h->type != STT_GNU_IFUNC
625af618
AM		 5427 && !htab->is_vxworks
5428 && !ppc_elf_hash_entry (h)->has_sda_refs
5429 && !readonly_dynrelocs (h))
5430 h->non_got_ref = 0;
5431 }
25dbc73a 5432 return TRUE;
252b5132 5433 }
25dbc73a 5434 else
a6aa5195 5435 h->plt.plist = NULL;
252b5132 5436
25dbc73a
AM		 5437 /* If this is a weak symbol, and there is a real definition, the
5438 processor independent code will have arranged for us to see the
5439 real definition first, and we can just use the same value. */
5440 if (h->u.weakdef != NULL)
252b5132 5441 {
25dbc73a
AM		 5442 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5443 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5444 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5445 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5446 if (ELIMINATE_COPY_RELOCS)
5447 h->non_got_ref = h->u.weakdef->non_got_ref;
5448 return TRUE;
5449 }
dc810e39 5450
25dbc73a
AM		 5451 /* This is a reference to a symbol defined by a dynamic object which
5452 is not a function. */
252b5132 5453
25dbc73a
AM		 5454 /* If we are creating a shared library, we must presume that the
5455 only references to the symbol are via the global offset table.
5456 For such cases we need not do anything here; the relocations will
5457 be handled correctly by relocate_section. */
5458 if (info->shared)
5459 return TRUE;
252b5132 5460
25dbc73a
AM		 5461 /* If there are no references to this symbol that do not use the
5462 GOT, we don't need to generate a copy reloc. */
5463 if (!h->non_got_ref)
5464 return TRUE;
5465
cfd2c773
NS		 5466 /* If we didn't find any dynamic relocs in read-only sections, then
5467 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5468 We can't do this if there are any small data relocations. This
5469 doesn't work on VxWorks, where we can not have dynamic
5470 relocations (other than copy and jump slot relocations) in an
5471 executable. */
4dc4a9a5 5472 if (ELIMINATE_COPY_RELOCS
cfd2c773 5473 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM		 5474 && !htab->is_vxworks
5475 && !h->def_regular
5476 && !readonly_dynrelocs (h))
25dbc73a 5477 {
625af618
AM		 5478 h->non_got_ref = 0;
5479 return TRUE;
252b5132
RH		 5480 }
5481
25dbc73a
AM		 5482 /* We must allocate the symbol in our .dynbss section, which will
5483 become part of the .bss section of the executable. There will be
5484 an entry for this symbol in the .dynsym section. The dynamic
5485 object will contain position independent code, so all references
5486 from the dynamic object to this symbol will go through the global
5487 offset table. The dynamic linker will use the .dynsym entry to
5488 determine the address it must put in the global offset table, so
5489 both the dynamic object and the regular object will refer to the
5490 same memory location for the variable.
5491
4dc4a9a5
DJ		 5492 Of course, if the symbol is referenced using SDAREL relocs, we
5493 must instead allocate it in .sbss. */
25dbc73a 5494
4dc4a9a5 5495 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 5496 s = htab->dynsbss;
5497 else
5498 s = htab->dynbss;
5499 BFD_ASSERT (s != NULL);
5500
5501 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5502 copy the initial value out of the dynamic object and into the
5503 runtime process image. We need to remember the offset into the
5504 .rela.bss section we are going to use. */
1d7e9d18 5505 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM		 5506 {
5507 asection *srel;
5508
4dc4a9a5 5509 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 5510 srel = htab->relsbss;
5511 else
5512 srel = htab->relbss;
5513 BFD_ASSERT (srel != NULL);
5514 srel->size += sizeof (Elf32_External_Rela);
5515 h->needs_copy = 1;
5516 }
7619e7c7 5517
027297b7 5518 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM		 5519}
5520\f
ac39eb42
AM		 5521/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5522 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5523 specifying the addend on the plt relocation. For -fpic code, the sym
5524 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5525 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM		 5526
5527static bfd_boolean
5528add_stub_sym (struct plt_entry *ent,
5529 struct elf_link_hash_entry *h,
ac39eb42 5530 struct bfd_link_info *info)
0ba07910
AM		 5531{
5532 struct elf_link_hash_entry *sh;
5533 size_t len1, len2, len3;
5534 char *name;
ac39eb42
AM		 5535 const char *stub;
5536 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5537
a877a2b6 5538 if (info->shared)
ac39eb42
AM		 5539 stub = ".plt_pic32.";
5540 else
5541 stub = ".plt_call32.";
0ba07910
AM		 5542
5543 len1 = strlen (h->root.root.string);
ac39eb42 5544 len2 = strlen (stub);
0ba07910
AM		 5545 len3 = 0;
5546 if (ent->sec)
5547 len3 = strlen (ent->sec->name);
ac39eb42 5548 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM		 5549 if (name == NULL)
5550 return FALSE;
5551 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5552 if (ent->sec)
5553 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM		 5554 memcpy (name + 8 + len3, stub, len2);
5555 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM		 5556 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5557 if (sh == NULL)
5558 return FALSE;
5559 if (sh->root.type == bfd_link_hash_new)
5560 {
5561 sh->root.type = bfd_link_hash_defined;
5562 sh->root.u.def.section = htab->glink;
5563 sh->root.u.def.value = ent->glink_offset;
5564 sh->ref_regular = 1;
5565 sh->def_regular = 1;
5566 sh->ref_regular_nonweak = 1;
5567 sh->forced_local = 1;
5568 sh->non_elf = 0;
5569 }
5570 return TRUE;
5571}
5572
3b36f7e6
AM		 5573/* Allocate NEED contiguous space in .got, and return the offset.
5574 Handles allocation of the got header when crossing 32k. */
5575
5576static bfd_vma
5577allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5578{
5579 bfd_vma where;
4a3dc543 5580 unsigned int max_before_header;
3b36f7e6 5581
4a3dc543 5582 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 5583 {
5584 where = htab->got->size;
5585 htab->got->size += need;
5586 }
3b36f7e6
AM		 5587 else
5588 {
4a3dc543
RS		 5589 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5590 if (need <= htab->got_gap)
3b36f7e6 5591 {
4a3dc543
RS		 5592 where = max_before_header - htab->got_gap;
5593 htab->got_gap -= need;
5594 }
5595 else
5596 {
5597 if (htab->got->size + need > max_before_header
5598 && htab->got->size <= max_before_header)
5599 {
5600 htab->got_gap = max_before_header - htab->got->size;
5601 htab->got->size = max_before_header + htab->got_header_size;
5602 }
5603 where = htab->got->size;
5604 htab->got->size += need;
3b36f7e6 5605 }
3b36f7e6
AM		 5606 }
5607 return where;
5608}
5609
25dbc73a 5610/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5611
b34976b6 5612static bfd_boolean
25dbc73a 5613allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5614{
25dbc73a
AM		 5615 struct bfd_link_info *info = inf;
5616 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5617 struct ppc_elf_link_hash_table *htab;
6061a67d 5618 struct elf_dyn_relocs *p;
252b5132 5619
25dbc73a 5620 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5621 return TRUE;
252b5132 5622
7619e7c7 5623 htab = ppc_elf_hash_table (info);
e054468f
AM		 5624 if (htab->elf.dynamic_sections_created
5625 || h->type == STT_GNU_IFUNC)
252b5132 5626 {
a6aa5195
AM		 5627 struct plt_entry *ent;
5628 bfd_boolean doneone = FALSE;
28e99bb6 5629 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5630 bfd_boolean dyn;
28e99bb6 5631
a6aa5195
AM		 5632 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5633 if (ent->plt.refcount > 0)
5634 {
5635 /* Make sure this symbol is output as a dynamic symbol. */
5636 if (h->dynindx == -1
e054468f
AM		 5637 && !h->forced_local
5638 && !h->def_regular
5639 && htab->elf.dynamic_sections_created)
a6aa5195
AM		 5640 {
5641 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5642 return FALSE;
5643 }
252b5132 5644
e054468f 5645 dyn = htab->elf.dynamic_sections_created;
a6aa5195 5646 if (info->shared
e054468f
AM		 5647 || h->type == STT_GNU_IFUNC
5648 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM		 5649 {
5650 asection *s = htab->plt;
25f23106 5651 if (!dyn || h->dynindx == -1)
e054468f 5652 s = htab->iplt;
7619e7c7 5653
25f23106 5654 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5655 {
a6aa5195 5656 if (!doneone)
28e99bb6
AM		 5657 {
5658 plt_offset = s->size;
5659 s->size += 4;
5660 }
5661 ent->plt.offset = plt_offset;
d7128ce4 5662
a6aa5195 5663 s = htab->glink;
a877a2b6 5664 if (!doneone || info->shared)
28e99bb6
AM		 5665 {
5666 glink_offset = s->size;
5667 s->size += GLINK_ENTRY_SIZE;
a7f2871e
AM		 5668 if (h == htab->tls_get_addr
5669 && !htab->no_tls_get_addr_opt)
5670 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM		 5671 }
5672 if (!doneone
5673 && !info->shared
625af618 5674 && h->def_dynamic
a6aa5195
AM		 5675 && !h->def_regular)
5676 {
5677 h->root.u.def.section = s;
28e99bb6 5678 h->root.u.def.value = glink_offset;
a6aa5195 5679 }
28e99bb6 5680 ent->glink_offset = glink_offset;
0ba07910
AM		 5681
5682 if (htab->emit_stub_syms
ac39eb42 5683 && !add_stub_sym (ent, h, info))
0ba07910 5684 return FALSE;
a6aa5195
AM		 5685 }
5686 else
5687 {
a6aa5195
AM		 5688 if (!doneone)
5689 {
28e99bb6
AM		 5690 /* If this is the first .plt entry, make room
5691 for the special first entry. */
5692 if (s->size == 0)
9d8504b1 5693 s->size += htab->plt_initial_entry_size;
28e99bb6
AM		 5694
5695 /* The PowerPC PLT is actually composed of two
5696 parts, the first part is 2 words (for a load
5697 and a jump), and then there is a remaining
5698 word available at the end. */
9d8504b1
PB		 5699 plt_offset = (htab->plt_initial_entry_size
5700 + (htab->plt_slot_size
5701 * ((s->size
5702 - htab->plt_initial_entry_size)
5703 / htab->plt_entry_size)));
28e99bb6
AM		 5704
5705 /* If this symbol is not defined in a regular
5706 file, and we are not generating a shared
5b914448 5707 library, then set the symbol to this location
de972ffa
AM		 5708 in the .plt. This is to avoid text
5709 relocations, and is required to make
28e99bb6
AM		 5710 function pointers compare as equal between
5711 the normal executable and the shared library. */
5712 if (! info->shared
625af618 5713 && h->def_dynamic
28e99bb6
AM		 5714 && !h->def_regular)
5715 {
5716 h->root.u.def.section = s;
5717 h->root.u.def.value = plt_offset;
5718 }
5719
9d8504b1
PB		 5720 /* Make room for this entry. */
5721 s->size += htab->plt_entry_size;
5722 /* After the 8192nd entry, room for two entries
5723 is allocated. */
4a3dc543 5724 if (htab->plt_type == PLT_OLD
9d8504b1
PB		 5725 && (s->size - htab->plt_initial_entry_size)
5726 / htab->plt_entry_size
5727 > PLT_NUM_SINGLE_ENTRIES)
5728 s->size += htab->plt_entry_size;
a6aa5195 5729 }
28e99bb6 5730 ent->plt.offset = plt_offset;
a6aa5195 5731 }
25dbc73a 5732
a6aa5195
AM		 5733 /* We also need to make an entry in the .rela.plt section. */
5734 if (!doneone)
5735 {
25f23106
AM		 5736 if (!htab->elf.dynamic_sections_created
5737 || h->dynindx == -1)
e054468f
AM		 5738 htab->reliplt->size += sizeof (Elf32_External_Rela);
5739 else
9d8504b1 5740 {
e054468f
AM		 5741 htab->relplt->size += sizeof (Elf32_External_Rela);
5742
5743 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5744 {
e054468f
AM		 5745 /* Allocate space for the unloaded relocations. */
5746 if (!info->shared
5747 && htab->elf.dynamic_sections_created)
9d8504b1 5748 {
e054468f
AM		 5749 if (ent->plt.offset
5750 == (bfd_vma) htab->plt_initial_entry_size)
5751 {
5752 htab->srelplt2->size
5753 += (sizeof (Elf32_External_Rela)
5754 * VXWORKS_PLTRESOLVE_RELOCS);
5755 }
5756
9d8504b1 5757 htab->srelplt2->size
e054468f
AM		 5758 += (sizeof (Elf32_External_Rela)
5759 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB		 5760 }
5761
e054468f
AM		 5762 /* Every PLT entry has an associated GOT entry in
5763 .got.plt. */
5764 htab->sgotplt->size += 4;
9d8504b1 5765 }
9d8504b1 5766 }
a6aa5195
AM		 5767 doneone = TRUE;
5768 }
5769 }
5770 else
5771 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5772 }
2ce859a1
AM		 5773 else
5774 ent->plt.offset = (bfd_vma) -1;
5775
5776 if (!doneone)
5777 {
5778 h->plt.plist = NULL;
5779 h->needs_plt = 0;
5780 }
25dbc73a
AM		 5781 }
5782 else
5783 {
a6aa5195 5784 h->plt.plist = NULL;
25dbc73a
AM		 5785 h->needs_plt = 0;
5786 }
5787
5788 eh = (struct ppc_elf_link_hash_entry *) h;
5789 if (eh->elf.got.refcount > 0)
5790 {
d6e14abc
AM		 5791 bfd_boolean dyn;
5792 unsigned int need;
5793
25dbc73a
AM		 5794 /* Make sure this symbol is output as a dynamic symbol. */
5795 if (eh->elf.dynindx == -1
b099ab9f 5796 && !eh->elf.forced_local
25f23106 5797 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5798 && htab->elf.dynamic_sections_created)
25dbc73a
AM		 5799 {
5800 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5801 return FALSE;
25dbc73a 5802 }
252b5132 5803
d6e14abc
AM		 5804 need = 0;
5805 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5806 {
d6e14abc 5807 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5808 {
d6e14abc
AM		 5809 if (!eh->elf.def_dynamic)
5810 /* We'll just use htab->tlsld_got.offset. This should
5811 always be the case. It's a little odd if we have
5812 a local dynamic reloc against a non-local symbol. */
5813 htab->tlsld_got.refcount += 1;
5814 else
3b36f7e6 5815 need += 8;
252b5132 5816 }
d6e14abc
AM		 5817 if ((eh->tls_mask & TLS_GD) != 0)
5818 need += 8;
5819 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5820 need += 4;
5821 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5822 need += 4;
d6e14abc
AM		 5823 }
5824 else
5825 need += 4;
5826 if (need == 0)
5827 eh->elf.got.offset = (bfd_vma) -1;
5828 else
5829 {
3b36f7e6 5830 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM		 5831 dyn = htab->elf.dynamic_sections_created;
5832 if ((info->shared
5833 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5834 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5835 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 5836 {
91e21fb7 5837 asection *rsec = htab->relgot;
3b36f7e6
AM		 5838 /* All the entries we allocated need relocs.
5839 Except LD only needs one. */
d6e14abc
AM		 5840 if ((eh->tls_mask & TLS_LD) != 0
5841 && eh->elf.def_dynamic)
3b36f7e6 5842 need -= 4;
25f23106 5843 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5844 }
25dbc73a
AM		 5845 }
5846 }
5847 else
5848 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5849
b099ab9f 5850 if (eh->dyn_relocs == NULL
de972ffa 5851 || !htab->elf.dynamic_sections_created)
25dbc73a 5852 return TRUE;
252b5132 5853
25dbc73a
AM		 5854 /* In the shared -Bsymbolic case, discard space allocated for
5855 dynamic pc-relative relocs against symbols which turn out to be
5856 defined in regular objects. For the normal shared case, discard
5857 space for relocs that have become local due to symbol visibility
5858 changes. */
5859
5860 if (info->shared)
5861 {
5862 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5863 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM		 5864 generated via assembly. We want calls to protected symbols to
5865 resolve directly to the function rather than going via the plt.
5866 If people want function pointer comparisons to work as expected
5867 then they should avoid writing weird assembly. */
5868 if (SYMBOL_CALLS_LOCAL (info, h))
5869 {
6061a67d 5870 struct elf_dyn_relocs **pp;
25dbc73a
AM		 5871
5872 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5873 {
25dbc73a
AM		 5874 p->count -= p->pc_count;
5875 p->pc_count = 0;
5876 if (p->count == 0)
5877 *pp = p->next;
5878 else
5879 pp = &p->next;
252b5132 5880 }
25dbc73a 5881 }
252b5132 5882
3348747a
NS		 5883 if (htab->is_vxworks)
5884 {
6061a67d 5885 struct elf_dyn_relocs **pp;
3348747a
NS		 5886
5887 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5888 {
5889 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5890 *pp = p->next;
5891 else
5892 pp = &p->next;
5893 }
5894 }
5895
89200bf8
AM		 5896 /* Discard relocs on undefined symbols that must be local. */
5897 if (eh->dyn_relocs != NULL
5898 && h->root.type == bfd_link_hash_undefined
5899 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5900 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5901 eh->dyn_relocs = NULL;
5902
25dbc73a
AM		 5903 /* Also discard relocs on undefined weak syms with non-default
5904 visibility. */
cab87ef9
AM		 5905 if (eh->dyn_relocs != NULL
5906 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5907 {
dfbb6ac9
AM		 5908 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5909 eh->dyn_relocs = NULL;
5910
5911 /* Make sure undefined weak symbols are output as a dynamic
5912 symbol in PIEs. */
5913 else if (h->dynindx == -1
e054468f
AM		 5914 && !h->forced_local
5915 && !h->def_regular)
dfbb6ac9
AM		 5916 {
5917 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5918 return FALSE;
5919 }
25dbc73a
AM		 5920 }
5921 }
5922 else if (ELIMINATE_COPY_RELOCS)
5923 {
5924 /* For the non-shared case, discard space for relocs against
5925 symbols which turn out to need copy relocs or are not
5926 dynamic. */
7619e7c7 5927
25dbc73a 5928 if (!h->non_got_ref
25dbc73a
AM		 5929 && !h->def_regular)
5930 {
5931 /* Make sure this symbol is output as a dynamic symbol.
5932 Undefined weak syms won't yet be marked as dynamic. */
5933 if (h->dynindx == -1
25f23106 5934 && !h->forced_local)
25dbc73a
AM		 5935 {
5936 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5937 return FALSE;
5938 }
7619e7c7 5939
25dbc73a
AM		 5940 /* If that succeeded, we know we'll be keeping all the
5941 relocs. */
5942 if (h->dynindx != -1)
5943 goto keep;
5944 }
252b5132 5945
25dbc73a 5946 eh->dyn_relocs = NULL;
252b5132 5947
25dbc73a
AM		 5948 keep: ;
5949 }
252b5132 5950
25dbc73a
AM		 5951 /* Finally, allocate space. */
5952 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5953 {
5954 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM		 5955 if (!htab->elf.dynamic_sections_created)
5956 sreloc = htab->reliplt;
25dbc73a
AM		 5957 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5958 }
252b5132 5959
25dbc73a
AM		 5960 return TRUE;
5961}
7619e7c7 5962
625af618
AM		 5963/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5964 read-only sections. */
7619e7c7 5965
25dbc73a 5966static bfd_boolean
625af618 5967maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5968{
25dbc73a
AM		 5969 if (h->root.type == bfd_link_hash_indirect)
5970 return TRUE;
252b5132 5971
625af618 5972 if (readonly_dynrelocs (h))
25dbc73a 5973 {
625af618 5974 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5975
625af618
AM		 5976 /* Not an error, just cut short the traversal. */
5977 return FALSE;
25dbc73a
AM		 5978 }
5979 return TRUE;
5980}
5981
6177242a
AM		 5982static const unsigned char glink_eh_frame_cie[] =
5983{
5984 0, 0, 0, 16, /* length. */
5985 0, 0, 0, 0, /* id. */
5986 1, /* CIE version. */
5987 'z', 'R', 0, /* Augmentation string. */
5988 4, /* Code alignment. */
5989 0x7c, /* Data alignment. */
5990 65, /* RA reg. */
5991 1, /* Augmentation size. */
5992 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
5993 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
5994};
5995
25dbc73a
AM		 5996/* Set the sizes of the dynamic sections. */
5997
5998static bfd_boolean
5999ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6000 struct bfd_link_info *info)
6001{
6002 struct ppc_elf_link_hash_table *htab;
6003 asection *s;
6004 bfd_boolean relocs;
6005 bfd *ibfd;
7fce784e 6006
252b5132 6007#ifdef DEBUG
25dbc73a 6008 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6009#endif
252b5132 6010
25dbc73a
AM		 6011 htab = ppc_elf_hash_table (info);
6012 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6013
25dbc73a
AM		 6014 if (elf_hash_table (info)->dynamic_sections_created)
6015 {
6016 /* Set the contents of the .interp section to the interpreter. */
6017 if (info->executable)
6018 {
3d4d4302 6019 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM		 6020 BFD_ASSERT (s != NULL);
6021 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6022 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6023 }
6024 }
252b5132 6025
4a3dc543 6026 if (htab->plt_type == PLT_OLD)
d7128ce4 6027 htab->got_header_size = 16;
4a3dc543 6028 else if (htab->plt_type == PLT_NEW)
d7128ce4 6029 htab->got_header_size = 12;
252b5132 6030
25dbc73a
AM		 6031 /* Set up .got offsets for local syms, and space for local dynamic
6032 relocs. */
6033 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6034 {
6035 bfd_signed_vma *local_got;
6036 bfd_signed_vma *end_local_got;
e054468f
AM		 6037 struct plt_entry **local_plt;
6038 struct plt_entry **end_local_plt;
25dbc73a
AM		 6039 char *lgot_masks;
6040 bfd_size_type locsymcount;
6041 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6042
0c8d6e5c 6043 if (!is_ppc_elf (ibfd))
25dbc73a 6044 continue;
7fce784e 6045
25dbc73a
AM		 6046 for (s = ibfd->sections; s != NULL; s = s->next)
6047 {
6061a67d 6048 struct elf_dyn_relocs *p;
252b5132 6049
6061a67d 6050 for (p = ((struct elf_dyn_relocs *)
25dbc73a
AM		 6051 elf_section_data (s)->local_dynrel);
6052 p != NULL;
6053 p = p->next)
6054 {
6055 if (!bfd_is_abs_section (p->sec)
6056 && bfd_is_abs_section (p->sec->output_section))
6057 {
6058 /* Input section has been discarded, either because
6059 it is a copy of a linkonce section or due to
6060 linker script /DISCARD/, so we'll be discarding
6061 the relocs too. */
7fce784e 6062 }
3348747a
NS		 6063 else if (htab->is_vxworks
6064 && strcmp (p->sec->output_section->name,
6065 ".tls_vars") == 0)
6066 {
6067 /* Relocations in vxworks .tls_vars sections are
6068 handled specially by the loader. */
6069 }
25dbc73a 6070 else if (p->count != 0)
7fce784e 6071 {
25f23106
AM		 6072 asection *sreloc = elf_section_data (p->sec)->sreloc;
6073 if (!htab->elf.dynamic_sections_created)
6074 sreloc = htab->reliplt;
6075 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM		 6076 if ((p->sec->output_section->flags
6077 & (SEC_READONLY | SEC_ALLOC))
6078 == (SEC_READONLY | SEC_ALLOC))
6079 info->flags |= DF_TEXTREL;
7fce784e 6080 }
252b5132 6081 }
252b5132 6082 }
252b5132 6083
25dbc73a
AM		 6084 local_got = elf_local_got_refcounts (ibfd);
6085 if (!local_got)
6086 continue;
252b5132 6087
0ffa91dd 6088 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM		 6089 locsymcount = symtab_hdr->sh_info;
6090 end_local_got = local_got + locsymcount;
e054468f
AM		 6091 local_plt = (struct plt_entry **) end_local_got;
6092 end_local_plt = local_plt + locsymcount;
6093 lgot_masks = (char *) end_local_plt;
91d6fa6a 6094
25dbc73a
AM		 6095 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6096 if (*local_got > 0)
6097 {
d6e14abc
AM		 6098 unsigned int need = 0;
6099 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6100 {
d6e14abc
AM		 6101 if ((*lgot_masks & TLS_GD) != 0)
6102 need += 8;
6103 if ((*lgot_masks & TLS_LD) != 0)
6104 htab->tlsld_got.refcount += 1;
6105 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6106 need += 4;
6107 if ((*lgot_masks & TLS_DTPREL) != 0)
6108 need += 4;
25dbc73a 6109 }
d6e14abc
AM		 6110 else
6111 need += 4;
6112 if (need == 0)
6113 *local_got = (bfd_vma) -1;
25dbc73a
AM		 6114 else
6115 {
3b36f7e6 6116 *local_got = allocate_got (htab, need);
25dbc73a 6117 if (info->shared)
3b36f7e6
AM		 6118 htab->relgot->size += (need
6119 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM		 6120 }
6121 }
6122 else
6123 *local_got = (bfd_vma) -1;
e054468f
AM		 6124
6125 if (htab->is_vxworks)
6126 continue;
6127
6128 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6129 for (; local_plt < end_local_plt; ++local_plt)
6130 {
6131 struct plt_entry *ent;
6132 bfd_boolean doneone = FALSE;
6133 bfd_vma plt_offset = 0, glink_offset = 0;
6134
6135 for (ent = *local_plt; ent != NULL; ent = ent->next)
6136 if (ent->plt.refcount > 0)
6137 {
91d6fa6a 6138 s = htab->iplt;
e054468f
AM		 6139
6140 if (!doneone)
6141 {
6142 plt_offset = s->size;
6143 s->size += 4;
6144 }
6145 ent->plt.offset = plt_offset;
6146
6147 s = htab->glink;
a877a2b6 6148 if (!doneone || info->shared)
e054468f
AM		 6149 {
6150 glink_offset = s->size;
6151 s->size += GLINK_ENTRY_SIZE;
6152 }
6153 ent->glink_offset = glink_offset;
6154
6155 if (!doneone)
6156 {
25f23106 6157 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM		 6158 doneone = TRUE;
6159 }
6160 }
6161 else
6162 ent->plt.offset = (bfd_vma) -1;
6163 }
25dbc73a 6164 }
252b5132 6165
b7fcf6f6
AM		 6166 /* Allocate space for global sym dynamic relocs. */
6167 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6168
3b36f7e6
AM		 6169 if (htab->tlsld_got.refcount > 0)
6170 {
6171 htab->tlsld_got.offset = allocate_got (htab, 8);
6172 if (info->shared)
6173 htab->relgot->size += sizeof (Elf32_External_Rela);
6174 }
6175 else
6176 htab->tlsld_got.offset = (bfd_vma) -1;
6177
4a3dc543 6178 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM		 6179 {
6180 unsigned int g_o_t = 32768;
6181
4d962050
AM		 6182 /* If we haven't allocated the header, do so now. When we get here,
6183 for old plt/got the got size will be 0 to 32764 (not allocated),
6184 or 32780 to 65536 (header allocated). For new plt/got, the
6185 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM		 6186 if (htab->got->size <= 32768)
6187 {
6188 g_o_t = htab->got->size;
4a3dc543 6189 if (htab->plt_type == PLT_OLD)
4d962050 6190 g_o_t += 4;
3b36f7e6
AM		 6191 htab->got->size += htab->got_header_size;
6192 }
3b36f7e6
AM		 6193
6194 htab->elf.hgot->root.u.def.value = g_o_t;
6195 }
bd6c6e2b
AM		 6196 if (info->shared)
6197 {
6198 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6199 if (sda != NULL
6200 && !(sda->root.type == bfd_link_hash_defined
6201 || sda->root.type == bfd_link_hash_defweak))
6202 {
6203 sda->root.type = bfd_link_hash_defined;
6204 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6205 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6206 }
6207 }
3b36f7e6 6208
e054468f
AM		 6209 if (htab->glink != NULL
6210 && htab->glink->size != 0
6211 && htab->elf.dynamic_sections_created)
d7128ce4
AM		 6212 {
6213 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM		 6214 /* Space for the branch table. */
6215 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6216 /* Pad out to align the start of PLTresolve. */
6217 htab->glink->size += -htab->glink->size & 15;
d7128ce4 6218 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM		 6219
6220 if (htab->emit_stub_syms)
6221 {
6222 struct elf_link_hash_entry *sh;
6223 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6224 TRUE, FALSE, FALSE);
6225 if (sh == NULL)
6226 return FALSE;
6227 if (sh->root.type == bfd_link_hash_new)
6228 {
6229 sh->root.type = bfd_link_hash_defined;
6230 sh->root.u.def.section = htab->glink;
6231 sh->root.u.def.value = htab->glink_pltresolve;
6232 sh->ref_regular = 1;
6233 sh->def_regular = 1;
6234 sh->ref_regular_nonweak = 1;
6235 sh->forced_local = 1;
6236 sh->non_elf = 0;
6237 }
6238 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6239 TRUE, FALSE, FALSE);
6240 if (sh == NULL)
6241 return FALSE;
6242 if (sh->root.type == bfd_link_hash_new)
6243 {
6244 sh->root.type = bfd_link_hash_defined;
6245 sh->root.u.def.section = htab->glink;
6246 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6247 sh->ref_regular = 1;
6248 sh->def_regular = 1;
6249 sh->ref_regular_nonweak = 1;
6250 sh->forced_local = 1;
6251 sh->non_elf = 0;
6252 }
6253 }
d7128ce4
AM		 6254 }
6255
6177242a
AM		 6256 if (htab->glink != NULL
6257 && htab->glink->size != 0
6258 && htab->glink_eh_frame != NULL
9a2a56cc
AM		 6259 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6260 && _bfd_elf_eh_frame_present (info))
6177242a
AM		 6261 {
6262 s = htab->glink_eh_frame;
6263 s->size = sizeof (glink_eh_frame_cie) + 20;
6264 if (info->shared)
6265 {
6266 s->size += 4;
6267 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6268 s->size += 4;
6269 }
6270 }
6271
25dbc73a
AM		 6272 /* We've now determined the sizes of the various dynamic sections.
6273 Allocate memory for them. */
6274 relocs = FALSE;
6275 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6276 {
9d8504b1
PB		 6277 bfd_boolean strip_section = TRUE;
6278
25dbc73a
AM		 6279 if ((s->flags & SEC_LINKER_CREATED) == 0)
6280 continue;
252b5132 6281
25dbc73a 6282 if (s == htab->plt
e054468f 6283 || s == htab->got)
25dbc73a 6284 {
9d8504b1
PB		 6285 /* We'd like to strip these sections if they aren't needed, but if
6286 we've exported dynamic symbols from them we must leave them.
6287 It's too late to tell BFD to get rid of the symbols. */
e054468f 6288 if (htab->elf.hplt != NULL)
9d8504b1 6289 strip_section = FALSE;
25dbc73a
AM		 6290 /* Strip this section if we don't need it; see the
6291 comment below. */
6292 }
e054468f
AM		 6293 else if (s == htab->iplt
6294 || s == htab->glink
6177242a 6295 || s == htab->glink_eh_frame
e054468f
AM		 6296 || s == htab->sgotplt
6297 || s == htab->sbss
6298 || s == htab->dynbss
6299 || s == htab->dynsbss
6300 || s == htab->sdata[0].section
c9a2f333 6301 || s == htab->sdata[1].section)
25dbc73a 6302 {
c9a2f333 6303 /* Strip these too. */
25dbc73a 6304 }
a0f49396
NC		 6305 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6306 ".rela"))
25dbc73a 6307 {
c456f082 6308 if (s->size != 0)
25dbc73a
AM		 6309 {
6310 /* Remember whether there are any relocation sections. */
6311 relocs = TRUE;
252b5132 6312
25dbc73a
AM		 6313 /* We use the reloc_count field as a counter if we need
6314 to copy relocs into the output file. */
6315 s->reloc_count = 0;
252b5132
RH		 6316 }
6317 }
25dbc73a
AM		 6318 else
6319 {
6320 /* It's not one of our sections, so don't allocate space. */
6321 continue;
6322 }
252b5132 6323
9d8504b1 6324 if (s->size == 0 && strip_section)
25dbc73a 6325 {
c456f082
AM		 6326 /* If we don't need this section, strip it from the
6327 output file. This is mostly to handle .rela.bss and
6328 .rela.plt. We must create both sections in
6329 create_dynamic_sections, because they must be created
6330 before the linker maps input sections to output
6331 sections. The linker does that before
6332 adjust_dynamic_symbol is called, and it is that
6333 function which decides whether anything needs to go
6334 into these sections. */
8423293d 6335 s->flags |= SEC_EXCLUDE;
25dbc73a
AM		 6336 continue;
6337 }
7fce784e 6338
d7128ce4 6339 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM		 6340 continue;
6341
25dbc73a
AM		 6342 /* Allocate memory for the section contents. */
6343 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6344 if (s->contents == NULL)
6345 return FALSE;
6346 }
252b5132 6347
25dbc73a 6348 if (htab->elf.dynamic_sections_created)
7619e7c7 6349 {
25dbc73a
AM		 6350 /* Add some entries to the .dynamic section. We fill in the
6351 values later, in ppc_elf_finish_dynamic_sections, but we
6352 must add the entries now so that we get the correct size for
6353 the .dynamic section. The DT_DEBUG entry is filled in by the
6354 dynamic linker and used by the debugger. */
6355#define add_dynamic_entry(TAG, VAL) \
6356 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6357
25dbc73a 6358 if (info->executable)
7619e7c7 6359 {
25dbc73a
AM		 6360 if (!add_dynamic_entry (DT_DEBUG, 0))
6361 return FALSE;
7619e7c7
AM		 6362 }
6363
25dbc73a 6364 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6365 {
25dbc73a
AM		 6366 if (!add_dynamic_entry (DT_PLTGOT, 0)
6367 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6368 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6369 || !add_dynamic_entry (DT_JMPREL, 0))
6370 return FALSE;
6371 }
7619e7c7 6372
d7128ce4
AM		 6373 if (htab->glink != NULL && htab->glink->size != 0)
6374 {
1fe44d79 6375 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6376 return FALSE;
a7f2871e
AM		 6377 if (!htab->no_tls_get_addr_opt
6378 && htab->tls_get_addr != NULL
6379 && htab->tls_get_addr->plt.plist != NULL
6380 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
6381 return FALSE;
d7128ce4
AM		 6382 }
6383
25dbc73a
AM		 6384 if (relocs)
6385 {
6386 if (!add_dynamic_entry (DT_RELA, 0)
6387 || !add_dynamic_entry (DT_RELASZ, 0)
6388 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6389 return FALSE;
6390 }
7619e7c7 6391
25dbc73a
AM		 6392 /* If any dynamic relocs apply to a read-only section, then we
6393 need a DT_TEXTREL entry. */
6394 if ((info->flags & DF_TEXTREL) == 0)
625af618 6395 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6396 info);
7619e7c7 6397
25dbc73a
AM		 6398 if ((info->flags & DF_TEXTREL) != 0)
6399 {
6400 if (!add_dynamic_entry (DT_TEXTREL, 0))
6401 return FALSE;
7619e7c7 6402 }
7a2b07ff
NS		 6403 if (htab->is_vxworks
6404 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6405 return FALSE;
6406 }
25dbc73a
AM		 6407#undef add_dynamic_entry
6408
7e01508c
AM		 6409 if (htab->glink_eh_frame != NULL
6410 && htab->glink_eh_frame->contents != NULL)
6411 {
6412 unsigned char *p = htab->glink_eh_frame->contents;
6413 bfd_vma val;
6414
6415 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6416 /* CIE length (rewrite in case little-endian). */
6417 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6418 p += sizeof (glink_eh_frame_cie);
6419 /* FDE length. */
6420 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6421 bfd_put_32 (htab->elf.dynobj, val, p);
6422 p += 4;
6423 /* CIE pointer. */
6424 val = p - htab->glink_eh_frame->contents;
6425 bfd_put_32 (htab->elf.dynobj, val, p);
6426 p += 4;
6427 /* Offset to .glink. Set later. */
6428 p += 4;
6429 /* .glink size. */
6430 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6431 p += 4;
6432 /* Augmentation. */
6433 p += 1;
6434
6435 if (info->shared
6436 && htab->elf.dynamic_sections_created)
6437 {
6438 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6439 if (adv < 64)
6440 *p++ = DW_CFA_advance_loc + adv;
6441 else if (adv < 256)
6442 {
6443 *p++ = DW_CFA_advance_loc1;
6444 *p++ = adv;
6445 }
6446 else if (adv < 65536)
6447 {
6448 *p++ = DW_CFA_advance_loc2;
6449 bfd_put_16 (htab->elf.dynobj, adv, p);
6450 p += 2;
6451 }
6452 else
6453 {
6454 *p++ = DW_CFA_advance_loc4;
6455 bfd_put_32 (htab->elf.dynobj, adv, p);
6456 p += 4;
6457 }
6458 *p++ = DW_CFA_register;
6459 *p++ = 65;
6460 p++;
6461 *p++ = DW_CFA_advance_loc + 4;
6462 *p++ = DW_CFA_restore_extended;
6463 *p++ = 65;
6464 }
6465 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6466 == htab->glink_eh_frame->size);
6467 }
6468
7619e7c7
AM		 6469 return TRUE;
6470}
0eb4a168
AM		 6471
6472/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6473
6474static bfd_boolean
6475ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6476{
6477 if (h->plt.plist != NULL
6478 && !h->def_regular
6479 && (!h->pointer_equality_needed
6480 || !h->ref_regular_nonweak))
6481 return FALSE;
6482
6483 return _bfd_elf_hash_symbol (h);
6484}
25dbc73a
AM		 6485\f
6486#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6487
01017ef8
NS		 6488/* Relaxation trampolines. r12 is available for clobbering (r11, is
6489 used for some functions that are allowed to break the ABI). */
25dbc73a
AM		 6490static const int shared_stub_entry[] =
6491 {
6492 0x7c0802a6, /* mflr 0 */
6493 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS		 6494 0x7d8802a6, /* mflr 12 */
6495 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6496 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6497 0x7c0803a6, /* mtlr 0 */
01017ef8 6498 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM		 6499 0x4e800420, /* bctr */
6500 };
6501
6502static const int stub_entry[] =
6503 {
01017ef8
NS		 6504 0x3d800000, /* lis 12,xxx@ha */
6505 0x398c0000, /* addi 12,12,xxx@l */
6506 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM		 6507 0x4e800420, /* bctr */
6508 };
6509
6510static bfd_boolean
6511ppc_elf_relax_section (bfd *abfd,
6512 asection *isec,
6513 struct bfd_link_info *link_info,
6514 bfd_boolean *again)
6515{
6516 struct one_fixup
6517 {
6518 struct one_fixup *next;
6519 asection *tsec;
01017ef8
NS		 6520 /* Final link, can use the symbol offset. For a
6521 relocatable link we use the symbol's index. */
25dbc73a
AM		 6522 bfd_vma toff;
6523 bfd_vma trampoff;
6524 };
7619e7c7 6525
25dbc73a
AM		 6526 Elf_Internal_Shdr *symtab_hdr;
6527 bfd_byte *contents = NULL;
6528 Elf_Internal_Sym *isymbuf = NULL;
6529 Elf_Internal_Rela *internal_relocs = NULL;
6530 Elf_Internal_Rela *irel, *irelend;
6531 struct one_fixup *fixups = NULL;
9bc4e62b 6532 unsigned changes = 0;
d7128ce4 6533 struct ppc_elf_link_hash_table *htab;
25dbc73a 6534 bfd_size_type trampoff;
a6aa5195 6535 asection *got2;
50248c89 6536 bfd_boolean maybe_pasted;
7619e7c7 6537
25dbc73a 6538 *again = FALSE;
7619e7c7 6539
c87b5a93 6540 /* Nothing to do if there are no relocations, and no need to do
a8ad78a7 6541 anything with non-alloc or non-code sections. */
c87b5a93 6542 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6543 || (isec->flags & SEC_CODE) == 0
c87b5a93
AM		 6544 || (isec->flags & SEC_RELOC) == 0
6545 || isec->reloc_count == 0)
25dbc73a 6546 return TRUE;
7619e7c7 6547
c8a1f254
NS		 6548 /* We cannot represent the required PIC relocs in the output, so don't
6549 do anything. The linker doesn't support mixing -shared and -r
6550 anyway. */
6551 if (link_info->relocatable && link_info->shared)
6552 return TRUE;
5b914448 6553
25dbc73a 6554 trampoff = (isec->size + 3) & (bfd_vma) -4;
50248c89
AM		 6555 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6556 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6557 /* Space for a branch around any trampolines. */
50248c89
AM		 6558 if (maybe_pasted)
6559 trampoff += 4;
7619e7c7 6560
0ffa91dd 6561 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 6562
25dbc73a
AM		 6563 /* Get a copy of the native relocations. */
6564 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6565 link_info->keep_memory);
6566 if (internal_relocs == NULL)
6567 goto error_return;
7619e7c7 6568
d7128ce4 6569 htab = ppc_elf_hash_table (link_info);
a6aa5195 6570 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 6571
a6aa5195 6572 irelend = internal_relocs + isec->reloc_count;
25dbc73a 6573 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 6574 {
25dbc73a 6575 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
91d6fa6a 6576 bfd_vma toff, roff;
25dbc73a
AM		 6577 asection *tsec;
6578 struct one_fixup *f;
6579 size_t insn_offset = 0;
6580 bfd_vma max_branch_offset, val;
6581 bfd_byte *hit_addr;
6582 unsigned long t0;
de972ffa 6583 struct elf_link_hash_entry *h;
a9585d22 6584 struct plt_entry **plist;
25dbc73a 6585 unsigned char sym_type;
7619e7c7 6586
25dbc73a
AM		 6587 switch (r_type)
6588 {
6589 case R_PPC_REL24:
6590 case R_PPC_LOCAL24PC:
6591 case R_PPC_PLTREL24:
6592 max_branch_offset = 1 << 25;
6593 break;
7619e7c7 6594
25dbc73a
AM		 6595 case R_PPC_REL14:
6596 case R_PPC_REL14_BRTAKEN:
6597 case R_PPC_REL14_BRNTAKEN:
6598 max_branch_offset = 1 << 15;
6599 break;
7619e7c7 6600
25dbc73a
AM		 6601 default:
6602 continue;
6603 }
7619e7c7 6604
25dbc73a 6605 /* Get the value of the symbol referred to by the reloc. */
de972ffa 6606 h = NULL;
25dbc73a
AM		 6607 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6608 {
6609 /* A local symbol. */
6610 Elf_Internal_Sym *isym;
7fce784e 6611
25dbc73a
AM		 6612 /* Read this BFD's local symbols. */
6613 if (isymbuf == NULL)
6614 {
6615 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6616 if (isymbuf == NULL)
6617 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6618 symtab_hdr->sh_info, 0,
6619 NULL, NULL, NULL);
6620 if (isymbuf == 0)
6621 goto error_return;
6622 }
6623 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6624 if (isym->st_shndx == SHN_UNDEF)
c8a1f254 6625 tsec = bfd_und_section_ptr;
25dbc73a
AM		 6626 else if (isym->st_shndx == SHN_ABS)
6627 tsec = bfd_abs_section_ptr;
6628 else if (isym->st_shndx == SHN_COMMON)
6629 tsec = bfd_com_section_ptr;
6630 else
6631 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 6632
25dbc73a
AM		 6633 toff = isym->st_value;
6634 sym_type = ELF_ST_TYPE (isym->st_info);
6635 }
6636 else
6637 {
6638 /* Global symbol handling. */
6639 unsigned long indx;
7619e7c7 6640
25dbc73a
AM		 6641 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6642 h = elf_sym_hashes (abfd)[indx];
7619e7c7 6643
25dbc73a
AM		 6644 while (h->root.type == bfd_link_hash_indirect
6645 || h->root.type == bfd_link_hash_warning)
6646 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 6647
a9585d22
AM		 6648 if (h->root.type == bfd_link_hash_defined
6649 || h->root.type == bfd_link_hash_defweak)
25dbc73a
AM		 6650 {
6651 tsec = h->root.u.def.section;
6652 toff = h->root.u.def.value;
6653 }
c8a1f254
NS		 6654 else if (h->root.type == bfd_link_hash_undefined
6655 || h->root.type == bfd_link_hash_undefweak)
6656 {
6657 tsec = bfd_und_section_ptr;
01017ef8 6658 toff = link_info->relocatable ? indx : 0;
c8a1f254 6659 }
25dbc73a
AM		 6660 else
6661 continue;
7619e7c7 6662
25dbc73a
AM		 6663 sym_type = h->type;
6664 }
7619e7c7 6665
a9585d22
AM		 6666 /* The condition here under which we call find_plt_ent must
6667 match that in relocate_section. If we call find_plt_ent here
6668 but not in relocate_section, or vice versa, then the branch
6669 destination used here may be incorrect. */
6670 plist = NULL;
6671 if (h != NULL)
de972ffa 6672 {
a9585d22
AM		 6673 /* We know is_branch_reloc (r_type) is true. */
6674 if (h->type == STT_GNU_IFUNC
6675 || r_type == R_PPC_PLTREL24)
de972ffa 6676 plist = &h->plt.plist;
a9585d22
AM		 6677 }
6678 else if (sym_type == STT_GNU_IFUNC
6679 && elf_local_got_offsets (abfd) != NULL)
6680 {
6681 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6682 struct plt_entry **local_plt = (struct plt_entry **)
6683 (local_got_offsets + symtab_hdr->sh_info);
6684 plist = local_plt + ELF32_R_SYM (irel->r_info);
6685 }
6686 if (plist != NULL)
6687 {
6688 bfd_vma addend = 0;
6689 struct plt_entry *ent;
de972ffa 6690
a9585d22
AM		 6691 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6692 addend = irel->r_addend;
6693 ent = find_plt_ent (plist, got2, addend);
6694 if (ent != NULL)
6695 {
6696 if (htab->plt_type == PLT_NEW
6697 || h == NULL
6698 || !htab->elf.dynamic_sections_created
6699 || h->dynindx == -1)
de972ffa 6700 {
a9585d22
AM		 6701 tsec = htab->glink;
6702 toff = ent->glink_offset;
6703 }
6704 else
6705 {
6706 tsec = htab->plt;
6707 toff = ent->plt.offset;
de972ffa
AM		 6708 }
6709 }
6710 }
6711
25dbc73a
AM		 6712 /* If the branch and target are in the same section, you have
6713 no hope of adding stubs. We'll error out later should the
6714 branch overflow. */
6715 if (tsec == isec)
6716 continue;
6717
6718 /* There probably isn't any reason to handle symbols in
6719 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6720 attribute for a code section, and we are only looking at
6721 branches. However, implement it correctly here as a
6722 reference for other target relax_section functions. */
dbaa2011 6723 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
25dbc73a
AM		 6724 {
6725 /* At this stage in linking, no SEC_MERGE symbol has been
6726 adjusted, so all references to such symbols need to be
6727 passed through _bfd_merged_section_offset. (Later, in
6728 relocate_section, all SEC_MERGE symbols *except* for
6729 section symbols have been adjusted.)
6730
6731 gas may reduce relocations against symbols in SEC_MERGE
6732 sections to a relocation against the section symbol when
6733 the original addend was zero. When the reloc is against
6734 a section symbol we should include the addend in the
6735 offset passed to _bfd_merged_section_offset, since the
6736 location of interest is the original symbol. On the
6737 other hand, an access to "sym+addend" where "sym" is not
6738 a section symbol should not include the addend; Such an
6739 access is presumed to be an offset from "sym"; The
6740 location of interest is just "sym". */
6741 if (sym_type == STT_SECTION)
6742 toff += irel->r_addend;
7619e7c7 6743
25dbc73a
AM		 6744 toff = _bfd_merged_section_offset (abfd, &tsec,
6745 elf_section_data (tsec)->sec_info,
6746 toff);
7619e7c7 6747
25dbc73a
AM		 6748 if (sym_type != STT_SECTION)
6749 toff += irel->r_addend;
6750 }
a6aa5195
AM		 6751 /* PLTREL24 addends are special. */
6752 else if (r_type != R_PPC_PLTREL24)
25dbc73a 6753 toff += irel->r_addend;
7619e7c7 6754
7de713b9
AM		 6755 /* Attempted -shared link of non-pic code loses. */
6756 if (tsec->output_section == NULL)
6757 continue;
6758
25dbc73a 6759 roff = irel->r_offset;
7619e7c7 6760
25dbc73a 6761 /* If the branch is in range, no need to do anything. */
c8a1f254
NS		 6762 if (tsec != bfd_und_section_ptr
6763 && (!link_info->relocatable
6764 /* A relocatable link may have sections moved during
6765 final link, so do not presume they remain in range. */
01017ef8
NS		 6766 || tsec->output_section == isec->output_section))
6767 {
6768 bfd_vma symaddr, reladdr;
6769
6770 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6771 reladdr = isec->output_section->vma + isec->output_offset + roff;
6772 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6773 continue;
6774 }
252b5132 6775
25dbc73a
AM		 6776 /* Look for an existing fixup to this address. */
6777 for (f = fixups; f ; f = f->next)
6778 if (f->tsec == tsec && f->toff == toff)
6779 break;
6780
6781 if (f == NULL)
7619e7c7 6782 {
25dbc73a
AM		 6783 size_t size;
6784 unsigned long stub_rtype;
252b5132 6785
25dbc73a
AM		 6786 val = trampoff - roff;
6787 if (val >= max_branch_offset)
6788 /* Oh dear, we can't reach a trampoline. Don't try to add
6789 one. We'll report an error later. */
6790 continue;
252b5132 6791
25dbc73a
AM		 6792 if (link_info->shared)
6793 {
6794 size = 4 * ARRAY_SIZE (shared_stub_entry);
6795 insn_offset = 12;
25dbc73a
AM		 6796 }
6797 else
6798 {
6799 size = 4 * ARRAY_SIZE (stub_entry);
6800 insn_offset = 0;
25dbc73a 6801 }
32af9f6e 6802 stub_rtype = R_PPC_RELAX;
d7128ce4
AM		 6803 if (tsec == htab->plt
6804 || tsec == htab->glink)
32af9f6e
AM		 6805 {
6806 stub_rtype = R_PPC_RELAX_PLT;
6807 if (r_type == R_PPC_PLTREL24)
6808 stub_rtype = R_PPC_RELAX_PLTREL24;
6809 }
252b5132 6810
25dbc73a
AM		 6811 /* Hijack the old relocation. Since we need two
6812 relocations for this use a "composite" reloc. */
6813 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6814 stub_rtype);
6815 irel->r_offset = trampoff + insn_offset;
32af9f6e
AM		 6816 if (r_type == R_PPC_PLTREL24
6817 && stub_rtype != R_PPC_RELAX_PLTREL24)
e7d92e2e 6818 irel->r_addend = 0;
252b5132 6819
25dbc73a
AM		 6820 /* Record the fixup so we don't do it again this section. */
6821 f = bfd_malloc (sizeof (*f));
6822 f->next = fixups;
6823 f->tsec = tsec;
6824 f->toff = toff;
6825 f->trampoff = trampoff;
6826 fixups = f;
252b5132 6827
25dbc73a 6828 trampoff += size;
9bc4e62b 6829 changes++;
25dbc73a
AM		 6830 }
6831 else
6832 {
6833 val = f->trampoff - roff;
6834 if (val >= max_branch_offset)
6835 continue;
252b5132 6836
25dbc73a
AM		 6837 /* Nop out the reloc, since we're finalizing things here. */
6838 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6839 }
252b5132 6840
25dbc73a
AM		 6841 /* Get the section contents. */
6842 if (contents == NULL)
6843 {
6844 /* Get cached copy if it exists. */
6845 if (elf_section_data (isec)->this_hdr.contents != NULL)
6846 contents = elf_section_data (isec)->this_hdr.contents;
6847 else
6848 {
6849 /* Go get them off disk. */
6850 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6851 goto error_return;
6852 }
6853 }
252b5132 6854
25dbc73a
AM		 6855 /* Fix up the existing branch to hit the trampoline. */
6856 hit_addr = contents + roff;
6857 switch (r_type)
6858 {
6859 case R_PPC_REL24:
6860 case R_PPC_LOCAL24PC:
6861 case R_PPC_PLTREL24:
6862 t0 = bfd_get_32 (abfd, hit_addr);
6863 t0 &= ~0x3fffffc;
6864 t0 |= val & 0x3fffffc;
6865 bfd_put_32 (abfd, t0, hit_addr);
6866 break;
252b5132 6867
25dbc73a
AM		 6868 case R_PPC_REL14:
6869 case R_PPC_REL14_BRTAKEN:
6870 case R_PPC_REL14_BRNTAKEN:
6871 t0 = bfd_get_32 (abfd, hit_addr);
6872 t0 &= ~0xfffc;
6873 t0 |= val & 0xfffc;
6874 bfd_put_32 (abfd, t0, hit_addr);
6875 break;
6876 }
6877 }
252b5132 6878
25dbc73a 6879 /* Write out the trampolines. */
25dbc73a
AM		 6880 if (fixups != NULL)
6881 {
6882 const int *stub;
6883 bfd_byte *dest;
25dbc73a 6884 int i, size;
252b5132 6885
25dbc73a
AM		 6886 do
6887 {
6888 struct one_fixup *f = fixups;
6889 fixups = fixups->next;
6890 free (f);
6891 }
6892 while (fixups);
252b5132 6893
515ef31d 6894 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM		 6895 if (contents == NULL)
6896 goto error_return;
252b5132 6897
25dbc73a 6898 isec->size = (isec->size + 3) & (bfd_vma) -4;
25dbc73a 6899 dest = contents + isec->size;
50248c89
AM		 6900 /* Branch around the trampolines. */
6901 if (maybe_pasted)
6902 {
6903 bfd_vma val = B + trampoff - isec->size;
6904 bfd_put_32 (abfd, val, dest);
6905 dest += 4;
6906 }
25dbc73a 6907 isec->size = trampoff;
252b5132 6908
25dbc73a
AM		 6909 if (link_info->shared)
6910 {
6911 stub = shared_stub_entry;
6912 size = ARRAY_SIZE (shared_stub_entry);
6913 }
6914 else
6915 {
6916 stub = stub_entry;
6917 size = ARRAY_SIZE (stub_entry);
6918 }
252b5132 6919
25dbc73a
AM		 6920 i = 0;
6921 while (dest < contents + trampoff)
252b5132 6922 {
25dbc73a
AM		 6923 bfd_put_32 (abfd, stub[i], dest);
6924 i++;
6925 if (i == size)
6926 i = 0;
6927 dest += 4;
252b5132 6928 }
25dbc73a 6929 BFD_ASSERT (i == 0);
252b5132
RH		 6930 }
6931
25dbc73a
AM		 6932 if (isymbuf != NULL
6933 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 6934 {
25dbc73a
AM		 6935 if (! link_info->keep_memory)
6936 free (isymbuf);
252b5132 6937 else
25dbc73a
AM		 6938 {
6939 /* Cache the symbols for elf_link_input_bfd. */
6940 symtab_hdr->contents = (unsigned char *) isymbuf;
6941 }
252b5132
RH		 6942 }
6943
25dbc73a
AM		 6944 if (contents != NULL
6945 && elf_section_data (isec)->this_hdr.contents != contents)
6946 {
9bc4e62b 6947 if (!changes && !link_info->keep_memory)
25dbc73a
AM		 6948 free (contents);
6949 else
6950 {
6951 /* Cache the section contents for elf_link_input_bfd. */
6952 elf_section_data (isec)->this_hdr.contents = contents;
6953 }
6954 }
252b5132 6955
9bc4e62b 6956 if (changes != 0)
25dbc73a 6957 {
9bc4e62b
NS		 6958 /* Append sufficient NOP relocs so we can write out relocation
6959 information for the trampolines. */
d4730f92 6960 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS		 6961 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6962 * sizeof (*new_relocs));
6963 unsigned ix;
5b914448 6964
9bc4e62b
NS		 6965 if (!new_relocs)
6966 goto error_return;
6967 memcpy (new_relocs, internal_relocs,
6968 isec->reloc_count * sizeof (*new_relocs));
6969 for (ix = changes; ix--;)
6970 {
6971 irel = new_relocs + ix + isec->reloc_count;
6972
6973 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6974 }
6975 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 6976 free (internal_relocs);
9bc4e62b
NS		 6977 elf_section_data (isec)->relocs = new_relocs;
6978 isec->reloc_count += changes;
d4730f92
BS		 6979 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6980 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 6981 }
9bc4e62b
NS		 6982 else if (elf_section_data (isec)->relocs != internal_relocs)
6983 free (internal_relocs);
252b5132 6984
9bc4e62b 6985 *again = changes != 0;
c8a1f254
NS		 6986 if (!*again && link_info->relocatable)
6987 {
6988 /* Convert the internal relax relocs to external form. */
6989 for (irel = internal_relocs; irel < irelend; irel++)
32af9f6e 6990 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
c8a1f254
NS		 6991 {
6992 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6993
6994 /* Rewrite the reloc and convert one of the trailing nop
6995 relocs to describe this relocation. */
6996 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6997 /* The relocs are at the bottom 2 bytes */
6998 irel[0].r_offset += 2;
6999 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
7000 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7001 irel[1].r_offset += 4;
7002 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7003 irel++;
7004 }
7005 }
5b914448 7006
b34976b6 7007 return TRUE;
25dbc73a
AM		 7008
7009 error_return:
7010 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7011 free (isymbuf);
7012 if (contents != NULL
7013 && elf_section_data (isec)->this_hdr.contents != contents)
7014 free (contents);
7015 if (internal_relocs != NULL
7016 && elf_section_data (isec)->relocs != internal_relocs)
7017 free (internal_relocs);
7018 return FALSE;
252b5132 7019}
252b5132 7020\f
8a696751
AM		 7021/* What to do when ld finds relocations against symbols defined in
7022 discarded sections. */
7023
7024static unsigned int
7025ppc_elf_action_discarded (asection *sec)
7026{
7027 if (strcmp (".fixup", sec->name) == 0)
7028 return 0;
7029
7030 if (strcmp (".got2", sec->name) == 0)
7031 return 0;
7032
7033 return _bfd_elf_default_action_discarded (sec);
7034}
c9a2f333 7035\f
25dbc73a 7036/* Fill in the address for a pointer generated in a linker section. */
252b5132 7037
25dbc73a 7038static bfd_vma
76750a2f 7039elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM		 7040 elf_linker_section_t *lsect,
7041 struct elf_link_hash_entry *h,
7042 bfd_vma relocation,
2bb04cf2 7043 const Elf_Internal_Rela *rel)
25dbc73a
AM		 7044{
7045 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7046
25dbc73a 7047 BFD_ASSERT (lsect != NULL);
252b5132 7048
25dbc73a 7049 if (h != NULL)
252b5132 7050 {
25dbc73a
AM		 7051 /* Handle global symbol. */
7052 struct ppc_elf_link_hash_entry *eh;
252b5132 7053
25dbc73a 7054 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM		 7055 BFD_ASSERT (eh->elf.def_regular);
7056 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM		 7057 }
7058 else
7059 {
7060 /* Handle local symbol. */
7061 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7062
0c8d6e5c 7063 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7064 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM		 7065 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7066 }
252b5132 7067
76750a2f
AM		 7068 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7069 rel->r_addend,
7070 lsect);
7071 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7072
76750a2f
AM		 7073 /* Offset will always be a multiple of four, so use the bottom bit
7074 as a "written" flag. */
7075 if ((linker_section_ptr->offset & 1) == 0)
7076 {
7077 bfd_put_32 (lsect->section->owner,
7078 relocation + linker_section_ptr->addend,
7079 lsect->section->contents + linker_section_ptr->offset);
7080 linker_section_ptr->offset += 1;
252b5132
RH		 7081 }
7082
bd6c6e2b
AM		 7083 relocation = (lsect->section->output_section->vma
7084 + lsect->section->output_offset
76750a2f 7085 + linker_section_ptr->offset - 1
bd6c6e2b 7086 - SYM_VAL (lsect->sym));
252b5132 7087
25dbc73a
AM		 7088#ifdef DEBUG
7089 fprintf (stderr,
7090 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7091 lsect->name, (long) relocation, (long) relocation);
7092#endif
252b5132 7093
bd6c6e2b 7094 return relocation;
252b5132 7095}
25dbc73a 7096
e054468f
AM		 7097#define PPC_LO(v) ((v) & 0xffff)
7098#define PPC_HI(v) (((v) >> 16) & 0xffff)
7099#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7100
7101static void
a7f2871e 7102write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM		 7103 struct bfd_link_info *info)
7104{
7105 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7106 bfd *output_bfd = info->output_bfd;
7107 bfd_vma plt;
e054468f
AM		 7108
7109 plt = ((ent->plt.offset & ~1)
7110 + plt_sec->output_section->vma
7111 + plt_sec->output_offset);
e054468f 7112
a877a2b6 7113 if (info->shared)
e054468f
AM		 7114 {
7115 bfd_vma got = 0;
7116
7117 if (ent->addend >= 32768)
7118 got = (ent->addend
7119 + ent->sec->output_section->vma
7120 + ent->sec->output_offset);
7121 else if (htab->elf.hgot != NULL)
7122 got = SYM_VAL (htab->elf.hgot);
7123
7124 plt -= got;
7125
7126 if (plt + 0x8000 < 0x10000)
7127 {
7128 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7129 p += 4;
7130 bfd_put_32 (output_bfd, MTCTR_11, p);
7131 p += 4;
7132 bfd_put_32 (output_bfd, BCTR, p);
7133 p += 4;
7134 bfd_put_32 (output_bfd, NOP, p);
7135 p += 4;
7136 }
7137 else
7138 {
7139 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7140 p += 4;
7141 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7142 p += 4;
7143 bfd_put_32 (output_bfd, MTCTR_11, p);
7144 p += 4;
7145 bfd_put_32 (output_bfd, BCTR, p);
7146 p += 4;
7147 }
7148 }
7149 else
7150 {
7151 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7152 p += 4;
7153 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7154 p += 4;
7155 bfd_put_32 (output_bfd, MTCTR_11, p);
7156 p += 4;
7157 bfd_put_32 (output_bfd, BCTR, p);
7158 p += 4;
7159 }
7160}
7161
bd6c6e2b
AM		 7162/* Return true if symbol is defined statically. */
7163
7164static bfd_boolean
7165is_static_defined (struct elf_link_hash_entry *h)
7166{
7167 return ((h->root.type == bfd_link_hash_defined
7168 || h->root.type == bfd_link_hash_defweak)
7169 && h->root.u.def.section != NULL
7170 && h->root.u.def.section->output_section != NULL);
7171}
7172
2d0f3896
AM		 7173/* If INSN is an opcode that may be used with an @tls operand, return
7174 the transformed insn for TLS optimisation, otherwise return 0. If
7175 REG is non-zero only match an insn with RB or RA equal to REG. */
7176
7177unsigned int
7178_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7179{
7180 unsigned int rtra;
7181
7182 if ((insn & (0x3f << 26)) != 31 << 26)
7183 return 0;
7184
7185 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7186 rtra = insn & ((1 << 26) - (1 << 16));
7187 else if (((insn >> 16) & 0x1f) == reg)
7188 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7189 else
7190 return 0;
7191
7192 if ((insn & (0x3ff << 1)) == 266 << 1)
7193 /* add -> addi. */
7194 insn = 14 << 26;
7195 else if ((insn & (0x1f << 1)) == 23 << 1
7196 && ((insn & (0x1f << 6)) < 14 << 6
7197 || ((insn & (0x1f << 6)) >= 16 << 6
7198 && (insn & (0x1f << 6)) < 24 << 6)))
7199 /* load and store indexed -> dform. */
7200 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7201 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7202 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7203 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7204 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7205 /* lwax -> lwa. */
7206 insn = (58 << 26) | 2;
7207 else
7208 return 0;
7209 insn |= rtra;
7210 return insn;
7211}
7212
766bc656
AM		 7213/* If INSN is an opcode that may be used with an @tprel operand, return
7214 the transformed insn for an undefined weak symbol, ie. with the
7215 thread pointer REG operand removed. Otherwise return 0. */
7216
7217unsigned int
7218_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7219{
7220 if ((insn & (0x1f << 16)) == reg << 16
7221 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7222 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7223 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7224 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7225 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7226 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7227 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7228 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7229 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7230 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7231 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7232 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7233 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7234 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7235 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7236 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7237 && (insn & 3) != 1)
7238 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7239 && ((insn & 3) == 0 || (insn & 3) == 3))))
7240 {
7241 insn &= ~(0x1f << 16);
7242 }
7243 else if ((insn & (0x1f << 21)) == reg << 21
7244 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7245 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7246 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7247 {
7248 insn &= ~(0x1f << 21);
7249 insn |= (insn & (0x1f << 16)) << 5;
7250 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7251 insn -= 2 >> 26; /* convert to ori,oris */
7252 }
7253 else
7254 insn = 0;
7255 return insn;
7256}
7257
1fe532cf
AM		 7258static bfd_boolean
7259is_insn_ds_form (unsigned int insn)
7260{
7261 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7262 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7263 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7264 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7265}
7266
7267static bfd_boolean
7268is_insn_dq_form (unsigned int insn)
7269{
7270 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7271}
7272
252b5132
RH		 7273/* The RELOCATE_SECTION function is called by the ELF backend linker
7274 to handle the relocations for a section.
7275
7276 The relocs are always passed as Rela structures; if the section
7277 actually uses Rel structures, the r_addend field will always be
7278 zero.
7279
7280 This function is responsible for adjust the section contents as
7281 necessary, and (if using Rela relocs and generating a
1049f94e 7282 relocatable output file) adjusting the reloc addend as
252b5132
RH		 7283 necessary.
7284
7285 This function does not have to worry about setting the reloc
7286 address or the reloc symbol index.
7287
7288 LOCAL_SYMS is a pointer to the swapped in local symbols.
7289
7290 LOCAL_SECTIONS is an array giving the section in the input file
7291 corresponding to the st_shndx field of each local symbol.
7292
7293 The global hash table entry for the global symbols can be found
7294 via elf_sym_hashes (input_bfd).
7295
1049f94e 7296 When generating relocatable output, this function must handle
252b5132
RH		 7297 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7298 going to be the section symbol corresponding to the output
7299 section, which means that the addend must be adjusted
7300 accordingly. */
7301
b34976b6 7302static bfd_boolean
55fd94b0
AM		 7303ppc_elf_relocate_section (bfd *output_bfd,
7304 struct bfd_link_info *info,
7305 bfd *input_bfd,
7306 asection *input_section,
7307 bfd_byte *contents,
7308 Elf_Internal_Rela *relocs,
7309 Elf_Internal_Sym *local_syms,
7310 asection **local_sections)
252b5132 7311{
7619e7c7
AM		 7312 Elf_Internal_Shdr *symtab_hdr;
7313 struct elf_link_hash_entry **sym_hashes;
7314 struct ppc_elf_link_hash_table *htab;
7315 Elf_Internal_Rela *rel;
7316 Elf_Internal_Rela *relend;
7317 Elf_Internal_Rela outrel;
a6aa5195 7318 asection *got2, *sreloc = NULL;
252b5132 7319 bfd_vma *local_got_offsets;
b34976b6 7320 bfd_boolean ret = TRUE;
4fe5ca5b 7321 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7322 bfd_boolean is_vxworks_tls;
b34976b6 7323
252b5132 7324#ifdef DEBUG
d003868e
AM		 7325 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7326 "%ld relocations%s",
7327 input_bfd, input_section,
7328 (long) input_section->reloc_count,
7329 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH		 7330#endif
7331
a6aa5195
AM		 7332 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7333
e47cd125 7334 /* Initialize howto table if not already done. */
8da6118f 7335 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH		 7336 ppc_elf_howto_init ();
7337
7619e7c7 7338 htab = ppc_elf_hash_table (info);
252b5132 7339 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7340 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7341 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS		 7342 /* We have to handle relocations in vxworks .tls_vars sections
7343 specially, because the dynamic loader is 'weird'. */
7344 is_vxworks_tls = (htab->is_vxworks && info->shared
7345 && !strcmp (input_section->output_section->name,
7346 ".tls_vars"));
7619e7c7
AM		 7347 rel = relocs;
7348 relend = relocs + input_section->reloc_count;
252b5132
RH		 7349 for (; rel < relend; rel++)
7350 {
7619e7c7
AM		 7351 enum elf_ppc_reloc_type r_type;
7352 bfd_vma addend;
7353 bfd_reloc_status_type r;
7354 Elf_Internal_Sym *sym;
7355 asection *sec;
7356 struct elf_link_hash_entry *h;
7357 const char *sym_name;
252b5132
RH		 7358 reloc_howto_type *howto;
7359 unsigned long r_symndx;
7360 bfd_vma relocation;
91d6fa6a 7361 bfd_vma branch_bit, from;
7619e7c7
AM		 7362 bfd_boolean unresolved_reloc;
7363 bfd_boolean warned;
7364 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7365 struct plt_entry **ifunc;
7619e7c7 7366
55fd94b0
AM		 7367 r_type = ELF32_R_TYPE (rel->r_info);
7368 sym = NULL;
7369 sec = NULL;
7370 h = NULL;
7619e7c7
AM		 7371 unresolved_reloc = FALSE;
7372 warned = FALSE;
252b5132 7373 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7374
252b5132
RH		 7375 if (r_symndx < symtab_hdr->sh_info)
7376 {
7377 sym = local_syms + r_symndx;
7378 sec = local_sections[r_symndx];
26c61ae5 7379 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7380
8517fae7 7381 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 7382 }
7383 else
7384 {
b2a8e766
AM		 7385 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7386 r_symndx, symtab_hdr, sym_hashes,
7387 h, sec, relocation,
7388 unresolved_reloc, warned);
9abc968f 7389
252b5132 7390 sym_name = h->root.root.string;
7619e7c7
AM		 7391 }
7392
dbaa2011 7393 if (sec != NULL && discarded_section (sec))
ab96bf03
AM		 7394 {
7395 /* For relocs against symbols from removed linkonce sections,
7396 or sections discarded by a linker script, we just want the
7397 section contents zeroed. Avoid any special processing. */
7398 howto = NULL;
7399 if (r_type < R_PPC_max)
7400 howto = ppc_elf_howto_table[r_type];
e4067dbb 7401 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 7402 rel, 1, relend, howto, 0, contents);
ab96bf03
AM		 7403 }
7404
7405 if (info->relocatable)
7406 {
7407 if (got2 != NULL
7408 && r_type == R_PPC_PLTREL24
7409 && rel->r_addend >= 32768)
7410 {
7411 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7412 addend specifies the GOT pointer offset within .got2. */
7413 rel->r_addend += got2->output_offset;
7414 }
7415 continue;
7416 }
7417
7619e7c7
AM		 7418 /* TLS optimizations. Replace instruction sequences and relocs
7419 based on information we collected in tls_optimize. We edit
7420 RELOCS so that --emit-relocs will output something sensible
7421 for the final instruction stream. */
7422 tls_mask = 0;
7423 tls_gd = 0;
727fc41e
AM		 7424 if (h != NULL)
7425 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7426 else if (local_got_offsets != NULL)
7619e7c7 7427 {
e054468f 7428 struct plt_entry **local_plt;
727fc41e 7429 char *lgot_masks;
e054468f
AM		 7430 local_plt
7431 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7432 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7433 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM		 7434 }
7435
7436 /* Ensure reloc mapping code below stays sane. */
7437 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7438 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7439 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7440 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7441 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7442 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7443 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7444 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7445 abort ();
7446 switch (r_type)
7447 {
7448 default:
7449 break;
7450
7451 case R_PPC_GOT_TPREL16:
7452 case R_PPC_GOT_TPREL16_LO:
e054468f 7453 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM		 7454 && (tls_mask & TLS_TPREL) == 0)
7455 {
7456 bfd_vma insn;
91d6fa6a 7457
4fe5ca5b 7458 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM		 7459 insn &= 31 << 21;
7460 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 7461 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM		 7462 r_type = R_PPC_TPREL16_HA;
7463 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7464 }
7465 break;
7466
7467 case R_PPC_TLS:
e054468f 7468 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM		 7469 && (tls_mask & TLS_TPREL) == 0)
7470 {
2d0f3896
AM		 7471 bfd_vma insn;
7472
7619e7c7 7473 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 7474 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7475 if (insn == 0)
7619e7c7 7476 abort ();
7619e7c7
AM		 7477 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7478 r_type = R_PPC_TPREL16_LO;
7479 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7480
7619e7c7 7481 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM		 7482 PPC_TPREL16_LO which is at low-order half-word. */
7483 rel->r_offset += d_offset;
7619e7c7
AM		 7484 }
7485 break;
7486
7487 case R_PPC_GOT_TLSGD16_HI:
7488 case R_PPC_GOT_TLSGD16_HA:
7489 tls_gd = TLS_TPRELGD;
e054468f 7490 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM		 7491 goto tls_gdld_hi;
7492 break;
7493
7494 case R_PPC_GOT_TLSLD16_HI:
7495 case R_PPC_GOT_TLSLD16_HA:
e054468f 7496 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM		 7497 {
7498 tls_gdld_hi:
7499 if ((tls_mask & tls_gd) != 0)
7500 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7501 + R_PPC_GOT_TPREL16);
7502 else
7503 {
7504 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 7505 rel->r_offset -= d_offset;
7619e7c7
AM		 7506 r_type = R_PPC_NONE;
7507 }
7508 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7509 }
7510 break;
7511
7512 case R_PPC_GOT_TLSGD16:
7513 case R_PPC_GOT_TLSGD16_LO:
7514 tls_gd = TLS_TPRELGD;
e054468f 7515 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7516 goto tls_ldgd_opt;
7619e7c7
AM		 7517 break;
7518
7519 case R_PPC_GOT_TLSLD16:
7520 case R_PPC_GOT_TLSLD16_LO:
e054468f 7521 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7522 {
3a71aa26 7523 unsigned int insn1, insn2;
b7fcf6f6 7524 bfd_vma offset;
7619e7c7 7525
b7fcf6f6 7526 tls_ldgd_opt:
727fc41e
AM		 7527 offset = (bfd_vma) -1;
7528 /* If not using the newer R_PPC_TLSGD/LD to mark
7529 __tls_get_addr calls, we must trust that the call
7530 stays with its arg setup insns, ie. that the next
7531 reloc is the __tls_get_addr call associated with
7532 the current reloc. Edit both insns. */
7533 if (input_section->has_tls_get_addr_call
7534 && rel + 1 < relend
7535 && branch_reloc_hash_match (input_bfd, rel + 1,
7536 htab->tls_get_addr))
7537 offset = rel[1].r_offset;
b7fcf6f6
AM		 7538 if ((tls_mask & tls_gd) != 0)
7539 {
7540 /* IE */
3a71aa26
AM		 7541 insn1 = bfd_get_32 (output_bfd,
7542 contents + rel->r_offset - d_offset);
b7fcf6f6
AM		 7543 insn1 &= (1 << 26) - 1;
7544 insn1 |= 32 << 26; /* lwz */
727fc41e
AM		 7545 if (offset != (bfd_vma) -1)
7546 {
f58d5a2d 7547 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM		 7548 insn2 = 0x7c631214; /* add 3,3,2 */
7549 bfd_put_32 (output_bfd, insn2, contents + offset);
7550 }
b7fcf6f6
AM		 7551 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7552 + R_PPC_GOT_TPREL16);
7553 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7554 }
7555 else
7556 {
7557 /* LE */
7558 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM		 7559 if (tls_gd == 0)
7560 {
b7fcf6f6 7561 /* Was an LD reloc. */
1d483afe
AM		 7562 for (r_symndx = 0;
7563 r_symndx < symtab_hdr->sh_info;
7564 r_symndx++)
7565 if (local_sections[r_symndx] == sec)
7566 break;
7567 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7568 r_symndx = STN_UNDEF;
b7fcf6f6 7569 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7570 if (r_symndx != STN_UNDEF)
1d483afe
AM		 7571 rel->r_addend -= (local_syms[r_symndx].st_value
7572 + sec->output_offset
7573 + sec->output_section->vma);
7619e7c7 7574 }
b7fcf6f6
AM		 7575 r_type = R_PPC_TPREL16_HA;
7576 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM		 7577 if (offset != (bfd_vma) -1)
7578 {
7579 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7580 rel[1].r_offset = offset + d_offset;
7581 rel[1].r_addend = rel->r_addend;
7582 insn2 = 0x38630000; /* addi 3,3,0 */
7583 bfd_put_32 (output_bfd, insn2, contents + offset);
7584 }
b7fcf6f6
AM		 7585 }
7586 bfd_put_32 (output_bfd, insn1,
7587 contents + rel->r_offset - d_offset);
b7fcf6f6
AM		 7588 if (tls_gd == 0)
7589 {
7590 /* We changed the symbol on an LD reloc. Start over
7591 in order to get h, sym, sec etc. right. */
7592 rel--;
7593 continue;
7619e7c7 7594 }
252b5132 7595 }
7619e7c7 7596 break;
727fc41e
AM		 7597
7598 case R_PPC_TLSGD:
e054468f 7599 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM		 7600 {
7601 unsigned int insn2;
7602 bfd_vma offset = rel->r_offset;
7603
7604 if ((tls_mask & TLS_TPRELGD) != 0)
7605 {
7606 /* IE */
7607 r_type = R_PPC_NONE;
7608 insn2 = 0x7c631214; /* add 3,3,2 */
7609 }
7610 else
7611 {
7612 /* LE */
7613 r_type = R_PPC_TPREL16_LO;
7614 rel->r_offset += d_offset;
7615 insn2 = 0x38630000; /* addi 3,3,0 */
7616 }
7617 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7618 bfd_put_32 (output_bfd, insn2, contents + offset);
7619 /* Zap the reloc on the _tls_get_addr call too. */
7620 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 7621 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM		 7622 }
7623 break;
7624
7625 case R_PPC_TLSLD:
e054468f 7626 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM		 7627 {
7628 unsigned int insn2;
7629
7630 for (r_symndx = 0;
7631 r_symndx < symtab_hdr->sh_info;
7632 r_symndx++)
7633 if (local_sections[r_symndx] == sec)
7634 break;
7635 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7636 r_symndx = STN_UNDEF;
727fc41e 7637 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7638 if (r_symndx != STN_UNDEF)
727fc41e
AM		 7639 rel->r_addend -= (local_syms[r_symndx].st_value
7640 + sec->output_offset
7641 + sec->output_section->vma);
7642
7643 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7644 rel->r_offset += d_offset;
7645 insn2 = 0x38630000; /* addi 3,3,0 */
7646 bfd_put_32 (output_bfd, insn2,
7647 contents + rel->r_offset - d_offset);
7648 /* Zap the reloc on the _tls_get_addr call too. */
7649 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 7650 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM		 7651 rel--;
7652 continue;
7653 }
7654 break;
7619e7c7
AM		 7655 }
7656
7657 /* Handle other relocations that tweak non-addend part of insn. */
7658 branch_bit = 0;
7659 switch (r_type)
7660 {
7661 default:
7662 break;
7663
7664 /* Branch taken prediction relocations. */
7665 case R_PPC_ADDR14_BRTAKEN:
7666 case R_PPC_REL14_BRTAKEN:
7667 branch_bit = BRANCH_PREDICT_BIT;
7668 /* Fall thru */
7669
4cc11e76 7670 /* Branch not taken prediction relocations. */
7619e7c7
AM		 7671 case R_PPC_ADDR14_BRNTAKEN:
7672 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC		 7673 {
7674 bfd_vma insn;
7619e7c7 7675
91d6fa6a
NC		 7676 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7677 insn &= ~BRANCH_PREDICT_BIT;
7678 insn |= branch_bit;
7619e7c7 7679
91d6fa6a
NC		 7680 from = (rel->r_offset
7681 + input_section->output_offset
7682 + input_section->output_section->vma);
7619e7c7 7683
91d6fa6a
NC		 7684 /* Invert 'y' bit if not the default. */
7685 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7686 insn ^= BRANCH_PREDICT_BIT;
7687
7688 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7689 break;
7690 }
252b5132
RH		 7691 }
7692
e054468f 7693 ifunc = NULL;
25f23106 7694 if (!htab->is_vxworks)
e054468f 7695 {
de972ffa
AM		 7696 struct plt_entry *ent;
7697
e054468f
AM		 7698 if (h != NULL)
7699 {
7700 if (h->type == STT_GNU_IFUNC)
7701 ifunc = &h->plt.plist;
7702 }
de972ffa
AM		 7703 else if (local_got_offsets != NULL
7704 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 7705 {
de972ffa 7706 struct plt_entry **local_plt;
e054468f 7707
de972ffa
AM		 7708 local_plt = (struct plt_entry **) (local_got_offsets
7709 + symtab_hdr->sh_info);
7710 ifunc = local_plt + r_symndx;
e054468f 7711 }
e054468f 7712
de972ffa
AM		 7713 ent = NULL;
7714 if (ifunc != NULL
7715 && (!info->shared
7716 || is_branch_reloc (r_type)))
7717 {
7718 addend = 0;
a877a2b6 7719 if (r_type == R_PPC_PLTREL24 && info->shared)
de972ffa
AM		 7720 addend = rel->r_addend;
7721 ent = find_plt_ent (ifunc, got2, addend);
7722 }
7723 if (ent != NULL)
7724 {
e054468f
AM		 7725 if (h == NULL && (ent->plt.offset & 1) == 0)
7726 {
7727 Elf_Internal_Rela rela;
7728 bfd_byte *loc;
7729
7730 rela.r_offset = (htab->iplt->output_section->vma
7731 + htab->iplt->output_offset
7732 + ent->plt.offset);
7733 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7734 rela.r_addend = relocation;
25f23106
AM		 7735 loc = htab->reliplt->contents;
7736 loc += (htab->reliplt->reloc_count++
7737 * sizeof (Elf32_External_Rela));
e054468f
AM		 7738 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7739
7740 ent->plt.offset |= 1;
7741 }
7742 if (h == NULL && (ent->glink_offset & 1) == 0)
7743 {
a7f2871e
AM		 7744 unsigned char *p = ((unsigned char *) htab->glink->contents
7745 + ent->glink_offset);
7746 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM		 7747 ent->glink_offset |= 1;
7748 }
7749
7750 unresolved_reloc = FALSE;
7751 if (htab->plt_type == PLT_NEW
7752 || !htab->elf.dynamic_sections_created
7753 || h == NULL)
7754 relocation = (htab->glink->output_section->vma
7755 + htab->glink->output_offset
7756 + (ent->glink_offset & ~1));
7757 else
7758 relocation = (htab->plt->output_section->vma
7759 + htab->plt->output_offset
7760 + ent->plt.offset);
7761 }
7762 }
7763
7619e7c7
AM		 7764 addend = rel->r_addend;
7765 tls_type = 0;
7766 howto = NULL;
55fd94b0
AM		 7767 if (r_type < R_PPC_max)
7768 howto = ppc_elf_howto_table[r_type];
7619e7c7 7769 switch (r_type)
252b5132
RH		 7770 {
7771 default:
25f53a85 7772 info->callbacks->einfo
8de848d8 7773 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 7774 input_bfd, (int) r_type, sym_name);
252b5132
RH		 7775
7776 bfd_set_error (bfd_error_bad_value);
b34976b6 7777 ret = FALSE;
252b5132
RH		 7778 continue;
7779
7619e7c7
AM		 7780 case R_PPC_NONE:
7781 case R_PPC_TLS:
727fc41e
AM		 7782 case R_PPC_TLSGD:
7783 case R_PPC_TLSLD:
7619e7c7
AM		 7784 case R_PPC_EMB_MRKREF:
7785 case R_PPC_GNU_VTINHERIT:
7786 case R_PPC_GNU_VTENTRY:
7595d193
L		 7787 continue;
7788
7619e7c7
AM		 7789 /* GOT16 relocations. Like an ADDR16 using the symbol's
7790 address in the GOT as relocation value instead of the
7791 symbol's value itself. Also, create a GOT entry for the
7792 symbol and put the symbol value there. */
7793 case R_PPC_GOT_TLSGD16:
7794 case R_PPC_GOT_TLSGD16_LO:
7795 case R_PPC_GOT_TLSGD16_HI:
7796 case R_PPC_GOT_TLSGD16_HA:
7797 tls_type = TLS_TLS | TLS_GD;
7798 goto dogot;
7799
7800 case R_PPC_GOT_TLSLD16:
7801 case R_PPC_GOT_TLSLD16_LO:
7802 case R_PPC_GOT_TLSLD16_HI:
7803 case R_PPC_GOT_TLSLD16_HA:
7804 tls_type = TLS_TLS | TLS_LD;
7805 goto dogot;
7806
7807 case R_PPC_GOT_TPREL16:
7808 case R_PPC_GOT_TPREL16_LO:
7809 case R_PPC_GOT_TPREL16_HI:
7810 case R_PPC_GOT_TPREL16_HA:
7811 tls_type = TLS_TLS | TLS_TPREL;
7812 goto dogot;
7813
7814 case R_PPC_GOT_DTPREL16:
7815 case R_PPC_GOT_DTPREL16_LO:
7816 case R_PPC_GOT_DTPREL16_HI:
7817 case R_PPC_GOT_DTPREL16_HA:
7818 tls_type = TLS_TLS | TLS_DTPREL;
7819 goto dogot;
7820
7821 case R_PPC_GOT16:
7822 case R_PPC_GOT16_LO:
7823 case R_PPC_GOT16_HI:
7824 case R_PPC_GOT16_HA:
727fc41e 7825 tls_mask = 0;
7619e7c7
AM		 7826 dogot:
7827 {
7828 /* Relocation is to the entry for this symbol in the global
7829 offset table. */
7830 bfd_vma off;
7831 bfd_vma *offp;
7832 unsigned long indx;
7833
7834 if (htab->got == NULL)
7835 abort ();
7836
7837 indx = 0;
7838 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 7839 && (h == NULL
f5385ebf 7840 || !h->def_dynamic))
7619e7c7
AM		 7841 offp = &htab->tlsld_got.offset;
7842 else if (h != NULL)
7843 {
7844 bfd_boolean dyn;
7845 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 7846 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM		 7847 || (info->shared
7848 && SYMBOL_REFERENCES_LOCAL (info, h)))
7849 /* This is actually a static link, or it is a
7850 -Bsymbolic link and the symbol is defined
7851 locally, or the symbol was forced to be local
7852 because of a version file. */
7853 ;
7854 else
7855 {
14acf4dc 7856 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM		 7857 indx = h->dynindx;
7858 unresolved_reloc = FALSE;
7859 }
7860 offp = &h->got.offset;
7861 }
7862 else
7863 {
7864 if (local_got_offsets == NULL)
7865 abort ();
7866 offp = &local_got_offsets[r_symndx];
7867 }
7868
7869 /* The offset must always be a multiple of 4. We use the
7870 least significant bit to record whether we have already
7871 processed this entry. */
7872 off = *offp;
7873 if ((off & 1) != 0)
7874 off &= ~1;
7875 else
7876 {
70bccea4
AM		 7877 unsigned int tls_m = (tls_mask
7878 & (TLS_LD | TLS_GD | TLS_DTPREL
7879 | TLS_TPREL | TLS_TPRELGD));
7880
7881 if (offp == &htab->tlsld_got.offset)
7882 tls_m = TLS_LD;
7883 else if (h == NULL
f5385ebf 7884 || !h->def_dynamic)
70bccea4
AM		 7885 tls_m &= ~TLS_LD;
7886
7887 /* We might have multiple got entries for this sym.
7888 Initialize them all. */
7889 do
7619e7c7 7890 {
70bccea4
AM		 7891 int tls_ty = 0;
7892
7893 if ((tls_m & TLS_LD) != 0)
7619e7c7 7894 {
70bccea4
AM		 7895 tls_ty = TLS_TLS | TLS_LD;
7896 tls_m &= ~TLS_LD;
7897 }
7898 else if ((tls_m & TLS_GD) != 0)
7899 {
7900 tls_ty = TLS_TLS | TLS_GD;
7901 tls_m &= ~TLS_GD;
7902 }
7903 else if ((tls_m & TLS_DTPREL) != 0)
7904 {
7905 tls_ty = TLS_TLS | TLS_DTPREL;
7906 tls_m &= ~TLS_DTPREL;
7907 }
7908 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7909 {
7910 tls_ty = TLS_TLS | TLS_TPREL;
7911 tls_m = 0;
7619e7c7 7912 }
7619e7c7 7913
70bccea4 7914 /* Generate relocs for the dynamic linker. */
4e795f50 7915 if ((info->shared || indx != 0)
d6e14abc
AM		 7916 && (offp == &htab->tlsld_got.offset
7917 || h == NULL
4e795f50
AM		 7918 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7919 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 7920 {
91e21fb7 7921 asection *rsec = htab->relgot;
91d6fa6a 7922 bfd_byte * loc;
91e21fb7 7923
70bccea4
AM		 7924 outrel.r_offset = (htab->got->output_section->vma
7925 + htab->got->output_offset
7926 + off);
e515b051 7927 outrel.r_addend = 0;
70bccea4
AM		 7928 if (tls_ty & (TLS_LD | TLS_GD))
7929 {
7930 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM		 7931 if (tls_ty == (TLS_TLS | TLS_GD))
7932 {
25f23106
AM		 7933 loc = rsec->contents;
7934 loc += (rsec->reloc_count++
70bccea4
AM		 7935 * sizeof (Elf32_External_Rela));
7936 bfd_elf32_swap_reloca_out (output_bfd,
7937 &outrel, loc);
e515b051 7938 outrel.r_offset += 4;
70bccea4
AM		 7939 outrel.r_info
7940 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM		 7941 }
7942 }
7943 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7944 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7945 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7946 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 7947 else if (indx != 0)
70bccea4 7948 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM		 7949 else if (ifunc != NULL)
7950 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7951 else
7952 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 7953 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM		 7954 {
7955 outrel.r_addend += relocation;
7956 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 7957 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 7958 }
25f23106
AM		 7959 loc = rsec->contents;
7960 loc += (rsec->reloc_count++
70bccea4
AM		 7961 * sizeof (Elf32_External_Rela));
7962 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM		 7963 }
7964
70bccea4
AM		 7965 /* Init the .got section contents if we're not
7966 emitting a reloc. */
7967 else
7619e7c7 7968 {
70bccea4
AM		 7969 bfd_vma value = relocation;
7970
7b609f53
AM		 7971 if (tls_ty == (TLS_TLS | TLS_LD))
7972 value = 1;
7973 else if (tls_ty != 0)
70bccea4 7974 {
e1918d23 7975 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 7976 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 7977 value += DTP_OFFSET - TP_OFFSET;
70bccea4 7978
7b609f53
AM		 7979 if (tls_ty == (TLS_TLS | TLS_GD))
7980 {
7981 bfd_put_32 (output_bfd, value,
7982 htab->got->contents + off + 4);
7983 value = 1;
7984 }
70bccea4 7985 }
70bccea4
AM		 7986 bfd_put_32 (output_bfd, value,
7987 htab->got->contents + off);
7619e7c7 7988 }
70bccea4
AM		 7989
7990 off += 4;
7991 if (tls_ty & (TLS_LD | TLS_GD))
7992 off += 4;
7619e7c7 7993 }
70bccea4
AM		 7994 while (tls_m != 0);
7995
7996 off = *offp;
7997 *offp = off | 1;
7619e7c7
AM		 7998 }
7999
8000 if (off >= (bfd_vma) -2)
8001 abort ();
8002
70bccea4
AM		 8003 if ((tls_type & TLS_TLS) != 0)
8004 {
8005 if (tls_type != (TLS_TLS | TLS_LD))
8006 {
8007 if ((tls_mask & TLS_LD) != 0
8008 && !(h == NULL
f5385ebf 8009 || !h->def_dynamic))
70bccea4
AM		 8010 off += 8;
8011 if (tls_type != (TLS_TLS | TLS_GD))
8012 {
8013 if ((tls_mask & TLS_GD) != 0)
8014 off += 8;
8015 if (tls_type != (TLS_TLS | TLS_DTPREL))
8016 {
8017 if ((tls_mask & TLS_DTPREL) != 0)
8018 off += 4;
8019 }
8020 }
8021 }
8022 }
8023
e87d4038
AM		 8024 relocation = (htab->got->output_section->vma
8025 + htab->got->output_offset
8026 + off
8027 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM		 8028
8029 /* Addends on got relocations don't make much sense.
8030 x+off@got is actually x@got+off, and since the got is
8031 generated by a hash table traversal, the value in the
8032 got at entry m+n bears little relation to the entry m. */
8033 if (addend != 0)
25f53a85 8034 info->callbacks->einfo
8de848d8 8035 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8036 input_bfd, input_section, rel->r_offset,
7b609f53 8037 howto->name,
7619e7c7
AM		 8038 sym_name);
8039 }
70bccea4 8040 break;
7619e7c7 8041
252b5132 8042 /* Relocations that need no special processing. */
7619e7c7 8043 case R_PPC_LOCAL24PC:
252b5132
RH		 8044 /* It makes no sense to point a local relocation
8045 at a symbol not in this object. */
7b609f53 8046 if (unresolved_reloc)
252b5132 8047 {
464e1740
ILT		 8048 if (! (*info->callbacks->undefined_symbol) (info,
8049 h->root.root.string,
8050 input_bfd,
8051 input_section,
5cc7c785 8052 rel->r_offset,
b34976b6
AM		 8053 TRUE))
8054 return FALSE;
252b5132
RH		 8055 continue;
8056 }
8057 break;
8058
7619e7c7
AM		 8059 case R_PPC_DTPREL16:
8060 case R_PPC_DTPREL16_LO:
8061 case R_PPC_DTPREL16_HI:
8062 case R_PPC_DTPREL16_HA:
e1918d23 8063 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 8064 break;
8065
70bccea4
AM		 8066 /* Relocations that may need to be propagated if this is a shared
8067 object. */
7619e7c7
AM		 8068 case R_PPC_TPREL16:
8069 case R_PPC_TPREL16_LO:
8070 case R_PPC_TPREL16_HI:
8071 case R_PPC_TPREL16_HA:
766bc656
AM		 8072 if (h != NULL
8073 && h->root.type == bfd_link_hash_undefweak
8074 && h->dynindx == -1)
8075 {
8076 /* Make this relocation against an undefined weak symbol
8077 resolve to zero. This is really just a tweak, since
8078 code using weak externs ought to check that they are
8079 defined before using them. */
8080 bfd_byte *p = contents + rel->r_offset - d_offset;
8081 unsigned int insn = bfd_get_32 (output_bfd, p);
8082 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8083 if (insn != 0)
8084 bfd_put_32 (output_bfd, insn, p);
8085 break;
8086 }
e1918d23 8087 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 8088 /* The TPREL16 relocs shouldn't really be used in shared
8089 libs as they will result in DT_TEXTREL being set, but
8090 support them anyway. */
8091 goto dodyn;
8092
8093 case R_PPC_TPREL32:
e1918d23 8094 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 8095 goto dodyn;
8096
8097 case R_PPC_DTPREL32:
e1918d23 8098 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 8099 goto dodyn;
8100
e515b051
AM		 8101 case R_PPC_DTPMOD32:
8102 relocation = 1;
8103 addend = 0;
8104 goto dodyn;
8105
d7128ce4
AM		 8106 case R_PPC_REL16:
8107 case R_PPC_REL16_LO:
8108 case R_PPC_REL16_HI:
8109 case R_PPC_REL16_HA:
8110 break;
8111
7619e7c7 8112 case R_PPC_REL32:
625af618
AM		 8113 if (h == NULL || h == htab->elf.hgot)
8114 break;
8115 /* fall through */
8116
8117 case R_PPC_ADDR32:
8118 case R_PPC_ADDR16:
8119 case R_PPC_ADDR16_LO:
8120 case R_PPC_ADDR16_HI:
8121 case R_PPC_ADDR16_HA:
8122 case R_PPC_UADDR32:
8123 case R_PPC_UADDR16:
8124 goto dodyn;
8125
b9c361e0
JL		 8126 case R_PPC_VLE_REL8:
8127 case R_PPC_VLE_REL15:
8128 case R_PPC_VLE_REL24:
625af618 8129 case R_PPC_REL24:
7619e7c7
AM		 8130 case R_PPC_REL14:
8131 case R_PPC_REL14_BRTAKEN:
8132 case R_PPC_REL14_BRNTAKEN:
252b5132
RH		 8133 /* If these relocations are not to a named symbol, they can be
8134 handled right here, no need to bother the dynamic linker. */
89200bf8 8135 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8136 || h == htab->elf.hgot)
252b5132 8137 break;
70bccea4 8138 /* fall through */
252b5132 8139
7619e7c7 8140 case R_PPC_ADDR24:
7619e7c7
AM		 8141 case R_PPC_ADDR14:
8142 case R_PPC_ADDR14_BRTAKEN:
8143 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM		 8144 if (h != NULL && !info->shared)
8145 break;
8146 /* fall through */
8147
7619e7c7 8148 dodyn:
3348747a
NS		 8149 if ((input_section->flags & SEC_ALLOC) == 0
8150 || is_vxworks_tls)
c87b5a93 8151 break;
c87b5a93 8152
ee05f2fe 8153 if ((info->shared
89200bf8
AM		 8154 && !(h != NULL
8155 && ((h->root.type == bfd_link_hash_undefined
8156 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8157 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8158 || (h->root.type == bfd_link_hash_undefweak
8159 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8160 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8161 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM		 8162 || (ELIMINATE_COPY_RELOCS
8163 && !info->shared
ee05f2fe
AM		 8164 && h != NULL
8165 && h->dynindx != -1
f5385ebf 8166 && !h->non_got_ref
de972ffa 8167 && !h->def_regular))
252b5132 8168 {
0bb2d96a 8169 int skip;
91d6fa6a 8170 bfd_byte * loc;
252b5132 8171#ifdef DEBUG
55fd94b0
AM		 8172 fprintf (stderr, "ppc_elf_relocate_section needs to "
8173 "create relocation for %s\n",
70bccea4
AM		 8174 (h && h->root.root.string
8175 ? h->root.root.string : "<unknown>"));
252b5132
RH		 8176#endif
8177
8178 /* When generating a shared object, these relocations
70bccea4
AM		 8179 are copied into the output file to be resolved at run
8180 time. */
252b5132
RH		 8181 if (sreloc == NULL)
8182 {
25f23106
AM		 8183 sreloc = elf_section_data (input_section)->sreloc;
8184 if (!htab->elf.dynamic_sections_created)
8185 sreloc = htab->reliplt;
83bac4b0 8186 if (sreloc == NULL)
b34976b6 8187 return FALSE;
252b5132
RH		 8188 }
8189
0bb2d96a 8190 skip = 0;
5b914448
AM		 8191 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8192 input_section,
8193 rel->r_offset);
0bb2d96a
JJ		 8194 if (outrel.r_offset == (bfd_vma) -1
8195 || outrel.r_offset == (bfd_vma) -2)
8196 skip = (int) outrel.r_offset;
252b5132
RH		 8197 outrel.r_offset += (input_section->output_section->vma
8198 + input_section->output_offset);
8199
8200 if (skip)
8201 memset (&outrel, 0, sizeof outrel);
89200bf8
AM		 8202 else if ((h != NULL
8203 && (h->root.type == bfd_link_hash_undefined
8204 || h->root.type == bfd_link_hash_undefweak))
8205 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8206 {
14acf4dc 8207 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8208 unresolved_reloc = FALSE;
252b5132
RH		 8209 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8210 outrel.r_addend = rel->r_addend;
8211 }
8212 else
8213 {
47388f4c
AM		 8214 outrel.r_addend = relocation + rel->r_addend;
8215
25f23106 8216 if (r_type != R_PPC_ADDR32)
252b5132 8217 {
89200bf8 8218 long indx = 0;
252b5132 8219
25f23106
AM		 8220 if (ifunc != NULL)
8221 {
8222 /* If we get here when building a static
8223 executable, then the libc startup function
8224 responsible for applying indirect function
8225 relocations is going to complain about
8226 the reloc type.
8227 If we get here when building a dynamic
8228 executable, it will be because we have
8229 a text relocation. The dynamic loader
8230 will set the text segment writable and
8231 non-executable to apply text relocations.
8232 So we'll segfault when trying to run the
8233 indirection function to resolve the reloc. */
25f53a85 8234 info->callbacks->einfo
8de848d8 8235 (_("%P: %H: relocation %s for indirect "
25f53a85
AM		 8236 "function %s unsupported\n"),
8237 input_bfd, input_section, rel->r_offset,
25f23106
AM		 8238 howto->name,
8239 sym_name);
8240 ret = FALSE;
8241 }
cf35638d 8242 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8243 ;
252b5132
RH		 8244 else if (sec == NULL || sec->owner == NULL)
8245 {
8246 bfd_set_error (bfd_error_bad_value);
89200bf8 8247 ret = FALSE;
252b5132
RH		 8248 }
8249 else
8250 {
8251 asection *osec;
8252
47388f4c
AM		 8253 /* We are turning this relocation into one
8254 against a section symbol. It would be
8255 proper to subtract the symbol's value,
8256 osec->vma, from the emitted reloc addend,
25f23106
AM		 8257 but ld.so expects buggy relocs.
8258 FIXME: Why not always use a zero index? */
252b5132
RH		 8259 osec = sec->output_section;
8260 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 8261 if (indx == 0)
8262 {
8263 osec = htab->elf.text_index_section;
8264 indx = elf_section_data (osec)->dynindx;
8265 }
8266 BFD_ASSERT (indx != 0);
252b5132 8267#ifdef DEBUG
74541ad4 8268 if (indx == 0)
e460dd0d 8269 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM		 8270 indx, osec->name, osec->flags,
8271 h->root.root.string);
252b5132
RH		 8272#endif
8273 }
8274
8275 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8276 }
25f23106
AM		 8277 else if (ifunc != NULL)
8278 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8279 else
8280 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH		 8281 }
8282
947216bf
AM		 8283 loc = sreloc->contents;
8284 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8285 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8286
2243deae 8287 if (skip == -1)
252b5132 8288 continue;
2243deae
L		 8289
8290 /* This reloc will be computed at runtime. We clear the memory
8291 so that it contains predictable value. */
8292 if (! skip
8293 && ((input_section->flags & SEC_ALLOC) != 0
8294 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8295 {
8296 relocation = howto->pc_relative ? outrel.r_offset : 0;
8297 addend = 0;
8298 break;
8299 }
252b5132 8300 }
252b5132
RH		 8301 break;
8302
32af9f6e
AM		 8303 case R_PPC_RELAX_PLT:
8304 case R_PPC_RELAX_PLTREL24:
de972ffa
AM		 8305 if (h != NULL)
8306 {
32af9f6e
AM		 8307 struct plt_entry *ent;
8308 bfd_vma got2_addend = 0;
8309
8310 if (r_type == R_PPC_RELAX_PLTREL24)
8311 {
8312 if (info->shared)
8313 got2_addend = addend;
8314 addend = 0;
8315 }
8316 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM		 8317 if (htab->plt_type == PLT_NEW)
8318 relocation = (htab->glink->output_section->vma
8319 + htab->glink->output_offset
8320 + ent->glink_offset);
8321 else
8322 relocation = (htab->plt->output_section->vma
8323 + htab->plt->output_offset
8324 + ent->plt.offset);
8325 }
b4a38de6
AM		 8326 /* Fall thru */
8327
32af9f6e
AM		 8328 case R_PPC_RELAX:
8329 if (info->shared)
8330 relocation -= (input_section->output_section->vma
8331 + input_section->output_offset
8332 + rel->r_offset - 4);
b4a38de6 8333
9abc968f
AM		 8334 {
8335 unsigned long t0;
8336 unsigned long t1;
8337
8338 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
8339 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
8340
8341 /* We're clearing the bits for R_PPC_ADDR16_HA
8342 and R_PPC_ADDR16_LO here. */
8343 t0 &= ~0xffff;
8344 t1 &= ~0xffff;
8345
8346 /* t0 is HA, t1 is LO */
8347 relocation += addend;
8348 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
8349 t1 |= relocation & 0xffff;
8350
8351 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
8352 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
9bc4e62b
NS		 8353
8354 /* Rewrite the reloc and convert one of the trailing nop
8355 relocs to describe this relocation. */
8356 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8357 /* The relocs are at the bottom 2 bytes */
8358 rel[0].r_offset += 2;
8359 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8360 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8361 rel[1].r_offset += 4;
8362 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8363 rel++;
9abc968f 8364 }
8517fae7 8365 continue;
deaaf2f3 8366
70bccea4 8367 /* Indirect .sdata relocation. */
7619e7c7 8368 case R_PPC_EMB_SDAI16:
c9a2f333 8369 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM		 8370 if (!is_static_defined (htab->sdata[0].sym))
8371 {
8372 unresolved_reloc = TRUE;
8373 break;
8374 }
7619e7c7 8375 relocation
76750a2f
AM		 8376 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8377 h, relocation, rel);
bd6c6e2b 8378 addend = 0;
252b5132
RH		 8379 break;
8380
70bccea4 8381 /* Indirect .sdata2 relocation. */
7619e7c7 8382 case R_PPC_EMB_SDA2I16:
c9a2f333 8383 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM		 8384 if (!is_static_defined (htab->sdata[1].sym))
8385 {
8386 unresolved_reloc = TRUE;
8387 break;
8388 }
7619e7c7 8389 relocation
76750a2f
AM		 8390 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8391 h, relocation, rel);
bd6c6e2b 8392 addend = 0;
252b5132
RH		 8393 break;
8394
70bccea4
AM		 8395 /* Handle the TOC16 reloc. We want to use the offset within the .got
8396 section, not the actual VMA. This is appropriate when generating
8397 an embedded ELF object, for which the .got section acts like the
8398 AIX .toc section. */
7619e7c7 8399 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM		 8400 if (sec == NULL || sec->output_section == NULL)
8401 {
8402 unresolved_reloc = TRUE;
8403 break;
8404 }
a0f49396
NC		 8405 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8406 ".got") == 0
8407 || strcmp (bfd_get_section_name (sec->owner, sec),
8408 ".cgot") == 0);
252b5132 8409
3b4f3a11 8410 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH		 8411 break;
8412
7619e7c7 8413 case R_PPC_PLTREL24:
e054468f 8414 if (h == NULL || ifunc != NULL)
6d78d0b9 8415 break;
252b5132 8416 /* Relocation is to the entry for this symbol in the
70bccea4 8417 procedure linkage table. */
a6aa5195 8418 {
a877a2b6
AM		 8419 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8420 info->shared ? addend : 0);
a6aa5195
AM		 8421 addend = 0;
8422 if (ent == NULL
8423 || htab->plt == NULL)
8424 {
8425 /* We didn't make a PLT entry for this symbol. This
8426 happens when statically linking PIC code, or when
8427 using -Bsymbolic. */
8428 break;
8429 }
252b5132 8430
a6aa5195 8431 unresolved_reloc = FALSE;
4a3dc543 8432 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 8433 relocation = (htab->glink->output_section->vma
8434 + htab->glink->output_offset
8435 + ent->glink_offset);
8436 else
8437 relocation = (htab->plt->output_section->vma
8438 + htab->plt->output_offset
8439 + ent->plt.offset);
8440 }
8da6118f 8441 break;
252b5132 8442
70bccea4 8443 /* Relocate against _SDA_BASE_. */
7619e7c7 8444 case R_PPC_SDAREL16:
252b5132
RH		 8445 {
8446 const char *name;
bd6c6e2b 8447 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 8448
bd6c6e2b
AM		 8449 if (sec == NULL
8450 || sec->output_section == NULL
8451 || !is_static_defined (sda))
3b4f3a11
AM		 8452 {
8453 unresolved_reloc = TRUE;
8454 break;
8455 }
bd6c6e2b 8456 addend -= SYM_VAL (sda);
3b4f3a11 8457
a0f49396 8458 name = bfd_get_section_name (output_bfd, sec->output_section);
0112cd26 8459 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 8460 && (name[6] == 0 || name[6] == '.'))
0112cd26 8461 || (CONST_STRNEQ (name, ".sbss")
5f819128 8462 && (name[5] == 0 || name[5] == '.'))))
252b5132 8463 {
25f53a85 8464 info->callbacks->einfo
8de848d8 8465 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8466 "in the wrong output section (%s)\n"),
d003868e 8467 input_bfd,
55fd94b0
AM		 8468 sym_name,
8469 howto->name,
8470 name);
252b5132 8471 }
252b5132
RH		 8472 }
8473 break;
8474
70bccea4 8475 /* Relocate against _SDA2_BASE_. */
7619e7c7 8476 case R_PPC_EMB_SDA2REL:
252b5132
RH		 8477 {
8478 const char *name;
bd6c6e2b 8479 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 8480
bd6c6e2b
AM		 8481 if (sec == NULL
8482 || sec->output_section == NULL
8483 || !is_static_defined (sda))
3b4f3a11
AM		 8484 {
8485 unresolved_reloc = TRUE;
8486 break;
8487 }
bd6c6e2b 8488 addend -= SYM_VAL (sda);
3b4f3a11 8489
a0f49396 8490 name = bfd_get_section_name (output_bfd, sec->output_section);
0112cd26
NC		 8491 if (! (CONST_STRNEQ (name, ".sdata2")
8492 || CONST_STRNEQ (name, ".sbss2")))
252b5132 8493 {
25f53a85 8494 info->callbacks->einfo
8de848d8 8495 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8496 "in the wrong output section (%s)\n"),
d003868e 8497 input_bfd,
55fd94b0
AM		 8498 sym_name,
8499 howto->name,
8500 name);
252b5132 8501 }
252b5132
RH		 8502 }
8503 break;
8504
b9c361e0
JL		 8505 case R_PPC_VLE_LO16A:
8506 relocation = (relocation + addend) & 0xffff;
8507 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8508 relocation, split16a_type);
8509 continue;
8510
8511 case R_PPC_VLE_LO16D:
8512 relocation = (relocation + addend) & 0xffff;
8513 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8514 relocation, split16d_type);
8515 continue;
8516
8517 case R_PPC_VLE_HI16A:
8518 relocation = ((relocation + addend) >> 16) & 0xffff;
8519 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8520 relocation, split16a_type);
8521 continue;
8522
8523 case R_PPC_VLE_HI16D:
8524 relocation = ((relocation + addend) >> 16) & 0xffff;
8525 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8526 relocation, split16d_type);
8527 continue;
8528
8529 case R_PPC_VLE_HA16A:
8530 {
8531 bfd_vma value = relocation + addend;
8532 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8533 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8534 value, split16a_type);
8535 }
8536 continue;
8537
8538 case R_PPC_VLE_HA16D:
8539 {
8540 bfd_vma value = relocation + addend;
8541 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8542 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8543 value, split16d_type);
8544 }
8545 continue;
8546
70bccea4 8547 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 8548 case R_PPC_EMB_SDA21:
b9c361e0 8549 case R_PPC_VLE_SDA21:
7619e7c7 8550 case R_PPC_EMB_RELSDA:
b9c361e0 8551 case R_PPC_VLE_SDA21_LO:
252b5132
RH		 8552 {
8553 const char *name;
8554 int reg;
bd6c6e2b 8555 struct elf_link_hash_entry *sda = NULL;
252b5132 8556
3b4f3a11
AM		 8557 if (sec == NULL || sec->output_section == NULL)
8558 {
8559 unresolved_reloc = TRUE;
8560 break;
8561 }
8562
a0f49396 8563 name = bfd_get_section_name (output_bfd, sec->output_section);
0112cd26 8564 if (((CONST_STRNEQ (name, ".sdata")
5f819128 8565 && (name[6] == 0 || name[6] == '.'))
0112cd26 8566 || (CONST_STRNEQ (name, ".sbss")
5f819128 8567 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH		 8568 {
8569 reg = 13;
bd6c6e2b 8570 sda = htab->sdata[0].sym;
252b5132 8571 }
0112cd26
NC		 8572 else if (CONST_STRNEQ (name, ".sdata2")
8573 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH		 8574 {
8575 reg = 2;
bd6c6e2b 8576 sda = htab->sdata[1].sym;
252b5132 8577 }
8da6118f
KH		 8578 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8579 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH		 8580 {
8581 reg = 0;
8582 }
252b5132
RH		 8583 else
8584 {
25f53a85 8585 info->callbacks->einfo
8de848d8 8586 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8587 "in the wrong output section (%s)\n"),
d003868e 8588 input_bfd,
55fd94b0
AM		 8589 sym_name,
8590 howto->name,
8591 name);
252b5132
RH		 8592
8593 bfd_set_error (bfd_error_bad_value);
b34976b6 8594 ret = FALSE;
252b5132
RH		 8595 continue;
8596 }
8597
bd6c6e2b
AM		 8598 if (sda != NULL)
8599 {
8600 if (!is_static_defined (sda))
8601 {
8602 unresolved_reloc = TRUE;
8603 break;
8604 }
8605 addend -= SYM_VAL (sda);
8606 }
8607
b9c361e0
JL		 8608 if (reg == 0
8609 && (r_type == R_PPC_VLE_SDA21
8610 || r_type == R_PPC_VLE_SDA21_LO))
8611 {
8612 /* Use the split20 format. */
8613 bfd_vma insn, bits12to15, bits21to31;
8614 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8615 /* Propagate sign bit, if necessary. */
8616 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8617 bits12to15 = value & 0x700;
8618 bits21to31 = value & 0x7ff;
8619 insn |= bits12to15;
8620 insn |= bits21to31;
8621 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8622 continue;
8623 }
8624 else if (r_type == R_PPC_EMB_SDA21
8625 || r_type == R_PPC_VLE_SDA21
8626 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a
NC		 8627 {
8628 bfd_vma insn; /* Fill in register field. */
8629
7619e7c7 8630 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 8631 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 8632 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH		 8633 }
8634 }
8635 break;
8636
b9c361e0
JL		 8637 case R_PPC_VLE_SDAREL_LO16A:
8638 case R_PPC_VLE_SDAREL_LO16D:
8639 case R_PPC_VLE_SDAREL_HI16A:
8640 case R_PPC_VLE_SDAREL_HI16D:
8641 case R_PPC_VLE_SDAREL_HA16A:
8642 case R_PPC_VLE_SDAREL_HA16D:
8643 {
8644 bfd_vma value;
8645 const char *name;
8646 //int reg;
8647 struct elf_link_hash_entry *sda = NULL;
8648
8649 if (sec == NULL || sec->output_section == NULL)
8650 {
8651 unresolved_reloc = TRUE;
8652 break;
8653 }
8654
a0f49396 8655 name = bfd_get_section_name (output_bfd, sec->output_section);
b9c361e0
JL		 8656 if (((CONST_STRNEQ (name, ".sdata")
8657 && (name[6] == 0 || name[6] == '.'))
8658 || (CONST_STRNEQ (name, ".sbss")
8659 && (name[5] == 0 || name[5] == '.'))))
8660 {
8661 //reg = 13;
8662 sda = htab->sdata[0].sym;
8663 }
8664 else if (CONST_STRNEQ (name, ".sdata2")
8665 || CONST_STRNEQ (name, ".sbss2"))
8666 {
8667 //reg = 2;
8668 sda = htab->sdata[1].sym;
8669 }
8670 else
8671 {
8672 (*_bfd_error_handler)
8673 (_("%B: the target (%s) of a %s relocation is "
8674 "in the wrong output section (%s)"),
8675 input_bfd,
8676 sym_name,
8677 howto->name,
8678 name);
8679
8680 bfd_set_error (bfd_error_bad_value);
8681 ret = FALSE;
8682 continue;
8683 }
8684
8685 if (sda != NULL)
8686 {
8687 if (!is_static_defined (sda))
8688 {
8689 unresolved_reloc = TRUE;
8690 break;
8691 }
8692 }
8693
8694 value = sda->root.u.def.section->output_section->vma
8695 + sda->root.u.def.section->output_offset;
8696
8697 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8698 {
8699 value = (value + addend) & 0xffff;
8700 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8701 value, split16a_type);
8702 }
8703 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8704 {
8705 value = (value + addend) & 0xffff;
8706 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8707 value, split16d_type);
8708 }
8709 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8710 {
8711 value = ((value + addend) >> 16) & 0xffff;
8712 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8713 value, split16a_type);
8714 }
8715 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8716 {
8717 value = ((value + addend) >> 16) & 0xffff;
8718 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8719 value, split16d_type);
8720 }
8721 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8722 {
8723 value += addend;
8724 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8725 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8726 value, split16a_type);
8727 }
8728 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8729 {
8730 value += addend;
8731 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8732 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8733 value, split16d_type);
8734 }
8735 }
8736 continue;
8737
70bccea4 8738 /* Relocate against the beginning of the section. */
7619e7c7
AM		 8739 case R_PPC_SECTOFF:
8740 case R_PPC_SECTOFF_LO:
8741 case R_PPC_SECTOFF_HI:
8742 case R_PPC_SECTOFF_HA:
3b4f3a11
AM		 8743 if (sec == NULL || sec->output_section == NULL)
8744 {
8745 unresolved_reloc = TRUE;
8746 break;
8747 }
252b5132 8748 addend -= sec->output_section->vma;
252b5132
RH		 8749 break;
8750
70bccea4 8751 /* Negative relocations. */
7619e7c7
AM		 8752 case R_PPC_EMB_NADDR32:
8753 case R_PPC_EMB_NADDR16:
8754 case R_PPC_EMB_NADDR16_LO:
8755 case R_PPC_EMB_NADDR16_HI:
8756 case R_PPC_EMB_NADDR16_HA:
8da6118f 8757 addend -= 2 * relocation;
252b5132
RH		 8758 break;
8759
7619e7c7
AM		 8760 case R_PPC_COPY:
8761 case R_PPC_GLOB_DAT:
8762 case R_PPC_JMP_SLOT:
8763 case R_PPC_RELATIVE:
e054468f 8764 case R_PPC_IRELATIVE:
7619e7c7
AM		 8765 case R_PPC_PLT32:
8766 case R_PPC_PLTREL32:
8767 case R_PPC_PLT16_LO:
8768 case R_PPC_PLT16_HI:
8769 case R_PPC_PLT16_HA:
8770 case R_PPC_ADDR30:
8771 case R_PPC_EMB_RELSEC16:
8772 case R_PPC_EMB_RELST_LO:
8773 case R_PPC_EMB_RELST_HI:
8774 case R_PPC_EMB_RELST_HA:
8775 case R_PPC_EMB_BIT_FLD:
25f53a85 8776 info->callbacks->einfo
8de848d8 8777 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 8778 input_bfd,
7619e7c7
AM		 8779 howto->name,
8780 sym_name);
252b5132
RH		 8781
8782 bfd_set_error (bfd_error_invalid_operation);
b34976b6 8783 ret = FALSE;
252b5132 8784 continue;
7619e7c7 8785 }
252b5132 8786
7619e7c7
AM		 8787 /* Do any further special processing. */
8788 switch (r_type)
8789 {
8790 default:
8791 break;
8792
8793 case R_PPC_ADDR16_HA:
d7128ce4 8794 case R_PPC_REL16_HA:
7619e7c7
AM		 8795 case R_PPC_SECTOFF_HA:
8796 case R_PPC_TPREL16_HA:
8797 case R_PPC_DTPREL16_HA:
7619e7c7
AM		 8798 case R_PPC_EMB_NADDR16_HA:
8799 case R_PPC_EMB_RELST_HA:
8800 /* It's just possible that this symbol is a weak symbol
7b609f53 8801 that's not actually defined anywhere. In that case,
7619e7c7
AM		 8802 'sec' would be NULL, and we should leave the symbol
8803 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 8804 if (sec == NULL)
8805 break;
8806 /* Fall thru */
8807
8808 case R_PPC_PLT16_HA:
8809 case R_PPC_GOT16_HA:
8810 case R_PPC_GOT_TLSGD16_HA:
8811 case R_PPC_GOT_TLSLD16_HA:
8812 case R_PPC_GOT_TPREL16_HA:
8813 case R_PPC_GOT_DTPREL16_HA:
8814 /* Add 0x10000 if sign bit in 0:15 is set.
8815 Bits 0:15 are not used. */
8816 addend += 0x8000;
7619e7c7 8817 break;
1fe532cf
AM		 8818
8819 case R_PPC_ADDR16:
8820 case R_PPC_ADDR16_LO:
8821 case R_PPC_GOT16:
8822 case R_PPC_GOT16_LO:
8823 case R_PPC_SDAREL16:
8824 case R_PPC_SECTOFF:
8825 case R_PPC_SECTOFF_LO:
8826 case R_PPC_DTPREL16:
8827 case R_PPC_DTPREL16_LO:
8828 case R_PPC_TPREL16:
8829 case R_PPC_TPREL16_LO:
8830 case R_PPC_GOT_TLSGD16:
8831 case R_PPC_GOT_TLSGD16_LO:
8832 case R_PPC_GOT_TLSLD16:
8833 case R_PPC_GOT_TLSLD16_LO:
8834 case R_PPC_GOT_DTPREL16:
8835 case R_PPC_GOT_DTPREL16_LO:
8836 case R_PPC_GOT_TPREL16:
8837 case R_PPC_GOT_TPREL16_LO:
8838 {
8839 /* The 32-bit ABI lacks proper relocations to deal with
8840 certain 64-bit instructions. Prevent damage to bits
8841 that make up part of the insn opcode. */
8842 unsigned int insn, mask, lobit;
8843
8844 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
8845 mask = 0;
8846 if (is_insn_ds_form (insn))
8847 mask = 3;
8848 else if (is_insn_dq_form (insn))
8849 mask = 15;
8850 else
8851 break;
8852 lobit = mask & (relocation + addend);
8853 if (lobit != 0)
8854 {
8855 addend -= lobit;
8856 info->callbacks->einfo
8857 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
8858 input_bfd, input_section, rel->r_offset,
8859 howto->name, sym_name, mask + 1);
8860 bfd_set_error (bfd_error_bad_value);
8861 ret = FALSE;
8862 }
8863 addend += insn & mask;
8864 }
8865 break;
252b5132
RH		 8866 }
8867
252b5132 8868#ifdef DEBUG
55fd94b0
AM		 8869 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8870 "offset = %ld, addend = %ld\n",
252b5132 8871 howto->name,
8da6118f 8872 (int) r_type,
252b5132
RH		 8873 sym_name,
8874 r_symndx,
7619e7c7 8875 (long) rel->r_offset,
8da6118f 8876 (long) addend);
252b5132
RH		 8877#endif
8878
7619e7c7
AM		 8879 if (unresolved_reloc
8880 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 8881 && h->def_dynamic)
8882 && _bfd_elf_section_offset (output_bfd, info, input_section,
8883 rel->r_offset) != (bfd_vma) -1)
7619e7c7 8884 {
25f53a85 8885 info->callbacks->einfo
8de848d8 8886 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 8887 input_bfd, input_section, rel->r_offset,
7b609f53 8888 howto->name,
7619e7c7
AM		 8889 sym_name);
8890 ret = FALSE;
8891 }
8892
252b5132
RH		 8893 r = _bfd_final_link_relocate (howto,
8894 input_bfd,
8895 input_section,
8896 contents,
7619e7c7 8897 rel->r_offset,
252b5132
RH		 8898 relocation,
8899 addend);
8900
7619e7c7 8901 if (r != bfd_reloc_ok)
252b5132 8902 {
7619e7c7 8903 if (r == bfd_reloc_overflow)
252b5132 8904 {
7619e7c7
AM		 8905 if (warned)
8906 continue;
8907 if (h != NULL
8908 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH		 8909 && howto->pc_relative)
8910 {
8911 /* Assume this is a call protected by other code that
8912 detect the symbol is undefined. If this is the case,
8913 we can safely ignore the overflow. If not, the
8914 program is hosed anyway, and a little warning isn't
8915 going to help. */
252b5132 8916
dc1bc0c9
RH		 8917 continue;
8918 }
252b5132 8919
7619e7c7 8920 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 8921 (h ? &h->root : NULL),
7619e7c7
AM		 8922 sym_name,
8923 howto->name,
8924 rel->r_addend,
8925 input_bfd,
8926 input_section,
8927 rel->r_offset))
8928 return FALSE;
dc1bc0c9
RH		 8929 }
8930 else
8931 {
25f53a85 8932 info->callbacks->einfo
8de848d8 8933 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM		 8934 input_bfd, input_section, rel->r_offset,
8935 howto->name, sym_name, (int) r);
7619e7c7 8936 ret = FALSE;
252b5132
RH		 8937 }
8938 }
8939 }
8940
252b5132
RH		 8941#ifdef DEBUG
8942 fprintf (stderr, "\n");
8943#endif
8944
8945 return ret;
8946}
252b5132 8947\f
25dbc73a
AM		 8948/* Finish up dynamic symbol handling. We set the contents of various
8949 dynamic sections here. */
c5fccbec 8950
b34976b6 8951static bfd_boolean
25dbc73a
AM		 8952ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8953 struct bfd_link_info *info,
8954 struct elf_link_hash_entry *h,
8955 Elf_Internal_Sym *sym)
e1a9cb8e 8956{
25dbc73a 8957 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM		 8958 struct plt_entry *ent;
8959 bfd_boolean doneone;
e1a9cb8e 8960
25dbc73a
AM		 8961#ifdef DEBUG
8962 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8963 h->root.root.string);
8964#endif
e1a9cb8e 8965
25dbc73a
AM		 8966 htab = ppc_elf_hash_table (info);
8967 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 8968
a6aa5195
AM		 8969 doneone = FALSE;
8970 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8971 if (ent->plt.offset != (bfd_vma) -1)
8972 {
8973 if (!doneone)
8974 {
8975 Elf_Internal_Rela rela;
8976 bfd_byte *loc;
8977 bfd_vma reloc_index;
e1a9cb8e 8978
e054468f 8979 if (htab->plt_type == PLT_NEW
25f23106
AM		 8980 || !htab->elf.dynamic_sections_created
8981 || h->dynindx == -1)
9d8504b1
PB		 8982 reloc_index = ent->plt.offset / 4;
8983 else
8984 {
8985 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8986 / htab->plt_slot_size);
8987 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 8988 && htab->plt_type == PLT_OLD)
9d8504b1
PB		 8989 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8990 }
8991
a6aa5195
AM		 8992 /* This symbol has an entry in the procedure linkage table.
8993 Set it up. */
e054468f 8994 if (htab->plt_type == PLT_VXWORKS
25f23106
AM		 8995 && htab->elf.dynamic_sections_created
8996 && h->dynindx != -1)
a6aa5195 8997 {
9d8504b1
PB		 8998 bfd_vma got_offset;
8999 const bfd_vma *plt_entry;
5b914448 9000
9d8504b1
PB		 9001 /* The first three entries in .got.plt are reserved. */
9002 got_offset = (reloc_index + 3) * 4;
9003
9004 /* Use the right PLT. */
9005 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9006 : ppc_elf_vxworks_plt_entry;
9007
9008 /* Fill in the .plt on VxWorks. */
9009 if (info->shared)
9010 {
9d8504b1 9011 bfd_put_32 (output_bfd,
e87d4038 9012 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB		 9013 htab->plt->contents + ent->plt.offset + 0);
9014 bfd_put_32 (output_bfd,
e87d4038 9015 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB		 9016 htab->plt->contents + ent->plt.offset + 4);
9017 }
9018 else
9019 {
e87d4038 9020 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB		 9021
9022 bfd_put_32 (output_bfd,
e87d4038 9023 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB		 9024 htab->plt->contents + ent->plt.offset + 0);
9025 bfd_put_32 (output_bfd,
e87d4038 9026 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB		 9027 htab->plt->contents + ent->plt.offset + 4);
9028 }
9029
9030 bfd_put_32 (output_bfd, plt_entry[2],
9031 htab->plt->contents + ent->plt.offset + 8);
9032 bfd_put_32 (output_bfd, plt_entry[3],
9033 htab->plt->contents + ent->plt.offset + 12);
9034
9035 /* This instruction is an immediate load. The value loaded is
9036 the byte offset of the R_PPC_JMP_SLOT relocation from the
9037 start of the .rela.plt section. The value is stored in the
9038 low-order 16 bits of the load instruction. */
9039 /* NOTE: It appears that this is now an index rather than a
9040 prescaled offset. */
5b914448 9041 bfd_put_32 (output_bfd,
9d8504b1
PB		 9042 plt_entry[4] | reloc_index,
9043 htab->plt->contents + ent->plt.offset + 16);
9044 /* This instruction is a PC-relative branch whose target is
9045 the start of the PLT section. The address of this branch
9046 instruction is 20 bytes beyond the start of this PLT entry.
9047 The address is encoded in bits 6-29, inclusive. The value
9048 stored is right-shifted by two bits, permitting a 26-bit
9049 offset. */
5b914448
AM		 9050 bfd_put_32 (output_bfd,
9051 (plt_entry[5]
9d8504b1
PB		 9052 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9053 htab->plt->contents + ent->plt.offset + 20);
9054 bfd_put_32 (output_bfd, plt_entry[6],
9055 htab->plt->contents + ent->plt.offset + 24);
9056 bfd_put_32 (output_bfd, plt_entry[7],
9057 htab->plt->contents + ent->plt.offset + 28);
9058
9059 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 9060 the address immediately after the "bctr" instruction
9d8504b1
PB		 9061 in this PLT entry. */
9062 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9063 + htab->plt->output_offset
9064 + ent->plt.offset + 16),
9065 htab->sgotplt->contents + got_offset);
9066
9067 if (!info->shared)
9068 {
9069 /* Fill in a couple of entries in .rela.plt.unloaded. */
9070 loc = htab->srelplt2->contents
9071 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9072 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9073 * sizeof (Elf32_External_Rela));
9074
9075 /* Provide the @ha relocation for the first instruction. */
9076 rela.r_offset = (htab->plt->output_section->vma
9077 + htab->plt->output_offset
9078 + ent->plt.offset + 2);
636ce3f5 9079 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 9080 R_PPC_ADDR16_HA);
9081 rela.r_addend = got_offset;
9082 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9083 loc += sizeof (Elf32_External_Rela);
9084
9085 /* Provide the @l relocation for the second instruction. */
9086 rela.r_offset = (htab->plt->output_section->vma
9087 + htab->plt->output_offset
9088 + ent->plt.offset + 6);
636ce3f5 9089 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 9090 R_PPC_ADDR16_LO);
9091 rela.r_addend = got_offset;
9092 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9093 loc += sizeof (Elf32_External_Rela);
9094
9095 /* Provide a relocation for the GOT entry corresponding to this
9096 PLT slot. Point it at the middle of the .plt entry. */
9097 rela.r_offset = (htab->sgotplt->output_section->vma
9098 + htab->sgotplt->output_offset
9099 + got_offset);
7325306f 9100 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB		 9101 R_PPC_ADDR32);
9102 rela.r_addend = ent->plt.offset + 16;
9103 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9104 }
9105
9106 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9107 In particular, the offset for the relocation is not the
9108 address of the PLT entry for this function, as specified
9109 by the ABI. Instead, the offset is set to the address of
9110 the GOT slot for this function. See EABI 4.4.4.1. */
9111 rela.r_offset = (htab->sgotplt->output_section->vma
9112 + htab->sgotplt->output_offset
9113 + got_offset);
9114
a6aa5195
AM		 9115 }
9116 else
9117 {
e054468f 9118 asection *splt = htab->plt;
25f23106
AM		 9119 if (!htab->elf.dynamic_sections_created
9120 || h->dynindx == -1)
e054468f
AM		 9121 splt = htab->iplt;
9122
9123 rela.r_offset = (splt->output_section->vma
9124 + splt->output_offset
9d8504b1 9125 + ent->plt.offset);
e054468f 9126 if (htab->plt_type == PLT_OLD
25f23106
AM		 9127 || !htab->elf.dynamic_sections_created
9128 || h->dynindx == -1)
9d8504b1
PB		 9129 {
9130 /* We don't need to fill in the .plt. The ppc dynamic
9131 linker will fill it in. */
9132 }
9133 else
9134 {
9135 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9136 + htab->glink->output_section->vma
9137 + htab->glink->output_offset);
9138 bfd_put_32 (output_bfd, val,
e054468f 9139 splt->contents + ent->plt.offset);
9d8504b1 9140 }
a6aa5195 9141 }
e1a9cb8e 9142
a6aa5195 9143 /* Fill in the entry in the .rela.plt section. */
a6aa5195 9144 rela.r_addend = 0;
e054468f
AM		 9145 if (!htab->elf.dynamic_sections_created
9146 || h->dynindx == -1)
9147 {
9148 BFD_ASSERT (h->type == STT_GNU_IFUNC
9149 && h->def_regular
9150 && (h->root.type == bfd_link_hash_defined
9151 || h->root.type == bfd_link_hash_defweak));
9152 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9153 rela.r_addend = SYM_VAL (h);
9154 }
9155 else
9156 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 9157
25f23106
AM		 9158 if (!htab->elf.dynamic_sections_created
9159 || h->dynindx == -1)
9160 loc = (htab->reliplt->contents
9161 + (htab->reliplt->reloc_count++
9162 * sizeof (Elf32_External_Rela)));
e054468f 9163 else
25f23106
AM		 9164 loc = (htab->relplt->contents
9165 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 9166 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 9167
a6aa5195
AM		 9168 if (!h->def_regular)
9169 {
0eb4a168
AM		 9170 /* Mark the symbol as undefined, rather than as
9171 defined in the .plt section. Leave the value if
9172 there were any relocations where pointer equality
9173 matters (this is a clue for the dynamic linker, to
9174 make function pointer comparisons work between an
9175 application and shared library), otherwise set it
9176 to zero. */
a6aa5195 9177 sym->st_shndx = SHN_UNDEF;
0eb4a168 9178 if (!h->pointer_equality_needed)
a6aa5195 9179 sym->st_value = 0;
0eb4a168
AM		 9180 else if (!h->ref_regular_nonweak)
9181 {
625af618
AM		 9182 /* This breaks function pointer comparisons, but
9183 that is better than breaking tests for a NULL
0eb4a168 9184 function pointer. */
0eb4a168
AM		 9185 sym->st_value = 0;
9186 }
a6aa5195 9187 }
de972ffa
AM		 9188 else if (h->type == STT_GNU_IFUNC
9189 && !info->shared)
9190 {
9191 /* Set the value of ifunc symbols in a non-pie
9192 executable to the glink entry. This is to avoid
9193 text relocations. We can't do this for ifunc in
9194 allocate_dynrelocs, as we do for normal dynamic
9195 function symbols with plt entries, because we need
9196 to keep the original value around for the ifunc
9197 relocation. */
9198 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9199 (output_bfd, htab->glink->output_section));
5b914448
AM		 9200 sym->st_value = (ent->glink_offset
9201 + htab->glink->output_offset
de972ffa
AM		 9202 + htab->glink->output_section->vma);
9203 }
a6aa5195
AM		 9204 doneone = TRUE;
9205 }
e1a9cb8e 9206
e054468f 9207 if (htab->plt_type == PLT_NEW
25f23106
AM		 9208 || !htab->elf.dynamic_sections_created
9209 || h->dynindx == -1)
a6aa5195 9210 {
a7f2871e 9211 unsigned char *p;
e054468f 9212 asection *splt = htab->plt;
25f23106
AM		 9213 if (!htab->elf.dynamic_sections_created
9214 || h->dynindx == -1)
e054468f 9215 splt = htab->iplt;
e1a9cb8e 9216
a7f2871e
AM		 9217 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9218
9219 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
9220 {
9221 bfd_put_32 (output_bfd, LWZ_11_3, p);
9222 p += 4;
9223 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9224 p += 4;
9225 bfd_put_32 (output_bfd, MR_0_3, p);
9226 p += 4;
9227 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9228 p += 4;
9229 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9230 p += 4;
9231 bfd_put_32 (output_bfd, BEQLR, p);
9232 p += 4;
9233 bfd_put_32 (output_bfd, MR_3_0, p);
9234 p += 4;
9235 bfd_put_32 (output_bfd, NOP, p);
9236 p += 4;
9237 }
9238
9239 write_glink_stub (ent, splt, p, info);
e1a9cb8e 9240
a877a2b6 9241 if (!info->shared)
e054468f
AM		 9242 /* We only need one non-PIC glink stub. */
9243 break;
a6aa5195
AM		 9244 }
9245 else
9246 break;
9247 }
e1a9cb8e 9248
25dbc73a
AM		 9249 if (h->needs_copy)
9250 {
9251 asection *s;
9252 Elf_Internal_Rela rela;
9253 bfd_byte *loc;
e1a9cb8e 9254
25dbc73a 9255 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 9256
25dbc73a
AM		 9257#ifdef DEBUG
9258 fprintf (stderr, ", copy");
9259#endif
e1a9cb8e 9260
25dbc73a 9261 BFD_ASSERT (h->dynindx != -1);
86bbe32f 9262
4dc4a9a5 9263 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 9264 s = htab->relsbss;
9265 else
9266 s = htab->relbss;
9267 BFD_ASSERT (s != NULL);
e1a9cb8e 9268
e87d4038 9269 rela.r_offset = SYM_VAL (h);
25dbc73a
AM		 9270 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9271 rela.r_addend = 0;
9272 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9273 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9274 }
e1a9cb8e 9275
25dbc73a
AM		 9276#ifdef DEBUG
9277 fprintf (stderr, "\n");
9278#endif
e1a9cb8e 9279
25dbc73a
AM		 9280 return TRUE;
9281}
9282\f
9283static enum elf_reloc_type_class
9284ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 9285{
25dbc73a
AM		 9286 switch (ELF32_R_TYPE (rela->r_info))
9287 {
9288 case R_PPC_RELATIVE:
9289 return reloc_class_relative;
9290 case R_PPC_REL24:
9291 case R_PPC_ADDR24:
9292 case R_PPC_JMP_SLOT:
9293 return reloc_class_plt;
9294 case R_PPC_COPY:
9295 return reloc_class_copy;
9296 default:
9297 return reloc_class_normal;
9298 }
e1a9cb8e 9299}
25dbc73a
AM		 9300\f
9301/* Finish up the dynamic sections. */
e1a9cb8e 9302
25dbc73a
AM		 9303static bfd_boolean
9304ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9305 struct bfd_link_info *info)
e1a9cb8e 9306{
25dbc73a 9307 asection *sdyn;
9d8504b1 9308 asection *splt;
25dbc73a 9309 struct ppc_elf_link_hash_table *htab;
1fe44d79 9310 bfd_vma got;
e87d4038
AM		 9311 bfd *dynobj;
9312 bfd_boolean ret = TRUE;
e1a9cb8e 9313
25dbc73a
AM		 9314#ifdef DEBUG
9315 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9316#endif
6b0817e5 9317
25dbc73a 9318 htab = ppc_elf_hash_table (info);
9d8504b1 9319 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 9320 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 9321 if (htab->is_vxworks)
3d4d4302 9322 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB		 9323 else
9324 splt = NULL;
e1a9cb8e 9325
1fe44d79
AM		 9326 got = 0;
9327 if (htab->elf.hgot != NULL)
e87d4038 9328 got = SYM_VAL (htab->elf.hgot);
1fe44d79 9329
25dbc73a 9330 if (htab->elf.dynamic_sections_created)
e1a9cb8e 9331 {
25dbc73a 9332 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 9333
25dbc73a 9334 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 9335
25dbc73a
AM		 9336 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9337 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9338 for (; dyncon < dynconend; dyncon++)
9339 {
9340 Elf_Internal_Dyn dyn;
9341 asection *s;
e1a9cb8e 9342
9d8504b1 9343 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 9344
25dbc73a
AM		 9345 switch (dyn.d_tag)
9346 {
9347 case DT_PLTGOT:
9d8504b1
PB		 9348 if (htab->is_vxworks)
9349 s = htab->sgotplt;
9350 else
9351 s = htab->plt;
25dbc73a
AM		 9352 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9353 break;
86bbe32f 9354
25dbc73a
AM		 9355 case DT_PLTRELSZ:
9356 dyn.d_un.d_val = htab->relplt->size;
9357 break;
e1a9cb8e 9358
25dbc73a
AM		 9359 case DT_JMPREL:
9360 s = htab->relplt;
9361 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9362 break;
2f89ff8d 9363
1fe44d79
AM		 9364 case DT_PPC_GOT:
9365 dyn.d_un.d_ptr = got;
d7128ce4
AM		 9366 break;
9367
9d8504b1
PB		 9368 case DT_RELASZ:
9369 if (htab->is_vxworks)
9370 {
9371 if (htab->relplt)
9372 dyn.d_un.d_ptr -= htab->relplt->size;
9373 break;
9374 }
9375 continue;
9376
25dbc73a 9377 default:
7a2b07ff
NS		 9378 if (htab->is_vxworks
9379 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9380 break;
25dbc73a
AM		 9381 continue;
9382 }
4c45e5c9 9383
25dbc73a
AM		 9384 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9385 }
9386 }
4c45e5c9 9387
3b36f7e6 9388 if (htab->got != NULL)
25dbc73a 9389 {
e79f5955
AM		 9390 if (htab->elf.hgot->root.u.def.section == htab->got
9391 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 9392 {
e79f5955 9393 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 9394
e87d4038
AM		 9395 p += htab->elf.hgot->root.u.def.value;
9396 if (htab->plt_type == PLT_OLD)
e79f5955
AM		 9397 {
9398 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9399 so that a function can easily find the address of
9400 _GLOBAL_OFFSET_TABLE_. */
9401 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9402 < htab->elf.hgot->root.u.def.section->size);
9403 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9404 }
3b36f7e6 9405
e87d4038 9406 if (sdyn != NULL)
e79f5955
AM		 9407 {
9408 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9409 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9410 < htab->elf.hgot->root.u.def.section->size);
9411 bfd_put_32 (output_bfd, val, p);
9412 }
e87d4038
AM		 9413 }
9414 else
9415 {
8de848d8 9416 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM		 9417 htab->elf.hgot->root.root.string,
9418 (htab->sgotplt != NULL
9419 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM		 9420 bfd_set_error (bfd_error_bad_value);
9421 ret = FALSE;
9422 }
25dbc73a
AM		 9423
9424 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9425 }
9426
9d8504b1
PB		 9427 /* Fill in the first entry in the VxWorks procedure linkage table. */
9428 if (splt && splt->size > 0)
9429 {
9430 /* Use the right PLT. */
5b914448
AM		 9431 const bfd_vma *plt_entry = (info->shared
9432 ? ppc_elf_vxworks_pic_plt0_entry
9433 : ppc_elf_vxworks_plt0_entry);
9d8504b1
PB		 9434
9435 if (!info->shared)
9436 {
e87d4038 9437 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 9438
e87d4038 9439 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 9440 splt->contents + 0);
e87d4038 9441 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB		 9442 splt->contents + 4);
9443 }
9444 else
9445 {
9446 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9447 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9448 }
9449 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9450 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9451 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9452 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9453 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9454 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9455
9456 if (! info->shared)
9457 {
9458 Elf_Internal_Rela rela;
9459 bfd_byte *loc;
9460
9461 loc = htab->srelplt2->contents;
9462
9463 /* Output the @ha relocation for the first instruction. */
9464 rela.r_offset = (htab->plt->output_section->vma
9465 + htab->plt->output_offset
9466 + 2);
636ce3f5 9467 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 9468 rela.r_addend = 0;
9469 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9470 loc += sizeof (Elf32_External_Rela);
5b914448 9471
9d8504b1
PB		 9472 /* Output the @l relocation for the second instruction. */
9473 rela.r_offset = (htab->plt->output_section->vma
9474 + htab->plt->output_offset
9475 + 6);
636ce3f5 9476 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 9477 rela.r_addend = 0;
9478 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9479 loc += sizeof (Elf32_External_Rela);
9480
9481 /* Fix up the remaining relocations. They may have the wrong
9482 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9483 in which symbols were output. */
9484 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9485 {
9486 Elf_Internal_Rela rel;
9487
9488 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 9489 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 9490 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9491 loc += sizeof (Elf32_External_Rela);
9492
9493 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 9494 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 9495 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9496 loc += sizeof (Elf32_External_Rela);
9497
9498 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 9499 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB		 9500 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9501 loc += sizeof (Elf32_External_Rela);
9502 }
9503 }
9504 }
9505
e054468f
AM		 9506 if (htab->glink != NULL
9507 && htab->glink->contents != NULL
9508 && htab->elf.dynamic_sections_created)
d7128ce4
AM		 9509 {
9510 unsigned char *p;
9511 unsigned char *endp;
a6aa5195 9512 bfd_vma res0;
d7128ce4 9513 unsigned int i;
a6aa5195
AM		 9514
9515 /*
9516 * PIC glink code is the following:
9517 *
9518 * # ith PLT code stub.
9519 * addis 11,30,(plt+(i-1)*4-got)@ha
9520 * lwz 11,(plt+(i-1)*4-got)@l(11)
9521 * mtctr 11
9522 * bctr
9523 *
9524 * # A table of branches, one for each plt entry.
176a0d42 9525 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM		 9526 * # addresses, so (r11 - res_0) gives the plt index * 4.
9527 * res_0: b PLTresolve
9528 * res_1: b PLTresolve
9529 * .
9530 * # Some number of entries towards the end can be nops
9531 * res_n_m3: nop
9532 * res_n_m2: nop
9533 * res_n_m1:
9534 *
9535 * PLTresolve:
9536 * addis 11,11,(1f-res_0)@ha
9537 * mflr 0
9538 * bcl 20,31,1f
9539 * 1: addi 11,11,(1b-res_0)@l
9540 * mflr 12
9541 * mtlr 0
9542 * sub 11,11,12 # r11 = index * 4
9543 * addis 12,12,(got+4-1b)@ha
9544 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9545 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9546 * mtctr 0
9547 * add 0,11,11
9548 * add 11,0,11 # r11 = index * 12 = reloc offset.
9549 * bctr
9550 */
9551 static const unsigned int pic_plt_resolve[] =
9552 {
9553 ADDIS_11_11,
9554 MFLR_0,
9555 BCL_20_31,
9556 ADDI_11_11,
9557 MFLR_12,
9558 MTLR_0,
9559 SUB_11_11_12,
9560 ADDIS_12_12,
9561 LWZ_0_12,
9562 LWZ_12_12,
9563 MTCTR_0,
9564 ADD_0_11_11,
9565 ADD_11_0_11,
9566 BCTR,
9567 NOP,
9568 NOP
9569 };
9570
176a0d42
AM		 9571 /*
9572 * Non-PIC glink code is a little simpler.
9573 *
9574 * # ith PLT code stub.
9575 * lis 11,(plt+(i-1)*4)@ha
9576 * lwz 11,(plt+(i-1)*4)@l(11)
9577 * mtctr 11
9578 * bctr
9579 *
9580 * The branch table is the same, then comes
9581 *
9582 * PLTresolve:
9583 * lis 12,(got+4)@ha
9584 * addis 11,11,(-res_0)@ha
9585 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9586 * addi 11,11,(-res_0)@l # r11 = index * 4
9587 * mtctr 0
9588 * add 0,11,11
9589 * lwz 12,(got+8)@l(12) # got[2] contains the map address
9590 * add 11,0,11 # r11 = index * 12 = reloc offset.
9591 * bctr
9592 */
d7128ce4
AM		 9593 static const unsigned int plt_resolve[] =
9594 {
a6aa5195
AM		 9595 LIS_12,
9596 ADDIS_11_11,
9597 LWZ_0_12,
9598 ADDI_11_11,
d7128ce4 9599 MTCTR_0,
7e8aeb9a 9600 ADD_0_11_11,
a6aa5195 9601 LWZ_12_12,
7e8aeb9a 9602 ADD_11_0_11,
d7128ce4
AM		 9603 BCTR,
9604 NOP,
9605 NOP,
a6aa5195
AM		 9606 NOP,
9607 NOP,
9608 NOP,
9609 NOP,
d7128ce4
AM		 9610 NOP
9611 };
9612
a6aa5195
AM		 9613 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
9614 abort ();
9615 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM		 9616 abort ();
9617
a6aa5195 9618 /* Build the branch table, one for each plt entry (less one),
86b9da88 9619 and perhaps some padding. */
a6aa5195
AM		 9620 p = htab->glink->contents;
9621 p += htab->glink_pltresolve;
86b9da88
AM		 9622 endp = htab->glink->contents;
9623 endp += htab->glink->size - GLINK_PLTRESOLVE;
9624 while (p < endp - 8 * 4)
9625 {
9626 bfd_put_32 (output_bfd, B + endp - p, p);
9627 p += 4;
9628 }
9629 while (p < endp)
9630 {
9631 bfd_put_32 (output_bfd, NOP, p);
9632 p += 4;
9633 }
9634
7e8aeb9a 9635 res0 = (htab->glink_pltresolve
86b9da88
AM		 9636 + htab->glink->output_section->vma
9637 + htab->glink->output_offset);
9638
9639 /* Last comes the PLTresolve stub. */
a877a2b6 9640 if (info->shared)
7e8aeb9a 9641 {
a6aa5195 9642 bfd_vma bcl;
d7128ce4 9643
a6aa5195 9644 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 9645 {
a6aa5195 9646 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM		 9647 p += 4;
9648 }
a6aa5195
AM		 9649 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
9650
9651 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
9652 + htab->glink->output_section->vma
9653 + htab->glink->output_offset);
9654
9655 bfd_put_32 (output_bfd,
9656 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
9657 bfd_put_32 (output_bfd,
9658 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
9659 bfd_put_32 (output_bfd,
9660 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
9661 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
9662 {
9663 bfd_put_32 (output_bfd,
9664 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9665 bfd_put_32 (output_bfd,
9666 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
9667 }
9668 else
9669 {
9670 bfd_put_32 (output_bfd,
9671 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9672 bfd_put_32 (output_bfd,
9673 LWZ_12_12 + 4, p + 9*4);
9674 }
7e8aeb9a
AM		 9675 }
9676 else
d7128ce4 9677 {
a6aa5195 9678 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM		 9679 {
9680 bfd_put_32 (output_bfd, plt_resolve[i], p);
9681 p += 4;
9682 }
a6aa5195
AM		 9683 p -= 4 * ARRAY_SIZE (plt_resolve);
9684
9685 bfd_put_32 (output_bfd,
9686 LIS_12 + PPC_HA (got + 4), p + 0*4);
9687 bfd_put_32 (output_bfd,
9688 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
9689 bfd_put_32 (output_bfd,
9690 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
9691 if (PPC_HA (got + 4) == PPC_HA (got + 8))
9692 {
9693 bfd_put_32 (output_bfd,
9694 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
9695 bfd_put_32 (output_bfd,
9696 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
9697 }
9698 else
9699 {
9700 bfd_put_32 (output_bfd,
9701 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
9702 bfd_put_32 (output_bfd,
9703 LWZ_12_12 + 4, p + 6*4);
9704 }
d7128ce4 9705 }
d7128ce4
AM		 9706 }
9707
6177242a
AM		 9708 if (htab->glink_eh_frame != NULL
9709 && htab->glink_eh_frame->contents != NULL)
9710 {
9711 unsigned char *p = htab->glink_eh_frame->contents;
9712 bfd_vma val;
9713
6177242a
AM		 9714 p += sizeof (glink_eh_frame_cie);
9715 /* FDE length. */
6177242a
AM		 9716 p += 4;
9717 /* CIE pointer. */
6177242a
AM		 9718 p += 4;
9719 /* Offset to .glink. */
9720 val = (htab->glink->output_section->vma
9721 + htab->glink->output_offset);
9722 val -= (htab->glink_eh_frame->output_section->vma
9723 + htab->glink_eh_frame->output_offset);
9724 val -= p - htab->glink_eh_frame->contents;
9725 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 9726
dbaa2011 9727 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM		 9728 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9729 htab->glink_eh_frame,
9730 htab->glink_eh_frame->contents))
9731 return FALSE;
9732 }
9733
e87d4038 9734 return ret;
25dbc73a 9735}
e1a9cb8e 9736\f
252b5132
RH		 9737#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9738#define TARGET_LITTLE_NAME "elf32-powerpcle"
9739#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9740#define TARGET_BIG_NAME "elf32-powerpc"
9741#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 9742#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 9743#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC		 9744#ifdef __QNXTARGET__
9745#define ELF_MAXPAGESIZE 0x1000
9746#else
252b5132 9747#define ELF_MAXPAGESIZE 0x10000
d0facd1b 9748#endif
b1342370 9749#define ELF_MINPAGESIZE 0x1000
24718e3b 9750#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH		 9751#define elf_info_to_howto ppc_elf_info_to_howto
9752
9753#ifdef EM_CYGNUS_POWERPC
9754#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9755#endif
9756
9757#ifdef EM_PPC_OLD
9758#define ELF_MACHINE_ALT2 EM_PPC_OLD
9759#endif
9760
9761#define elf_backend_plt_not_loaded 1
252b5132 9762#define elf_backend_can_gc_sections 1
51b64d56 9763#define elf_backend_can_refcount 1
b491616a 9764#define elf_backend_rela_normal 1
252b5132 9765
43c40ab2 9766#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 9767#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 9768#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 9769#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 9770#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 9771#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 9772#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 9773#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 9774
feee612b 9775#define elf_backend_object_p ppc_elf_object_p
252b5132
RH		 9776#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9777#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9778#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9779#define elf_backend_relocate_section ppc_elf_relocate_section
9780#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9781#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 9782#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH		 9783#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9784#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9785#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 9786#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH		 9787#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9788#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9789#define elf_backend_fake_sections ppc_elf_fake_sections
9790#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 9791#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ		 9792#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9793#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 9794#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 9795#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM		 9796#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9797#define elf_backend_final_write_processing ppc_elf_final_write_processing
9798#define elf_backend_write_section ppc_elf_write_section
551b43fd 9799#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 9800#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 9801#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 9802#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e054468f 9803#define elf_backend_post_process_headers _bfd_elf_set_osabi
b9c361e0 9804#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
b9c361e0 9805#define elf_backend_section_processing ppc_elf_section_processing
252b5132
RH		 9806
9807#include "elf32-target.h"
9d8504b1 9808
7b8e7dad
AM		 9809/* FreeBSD Target */
9810
9811#undef TARGET_LITTLE_SYM
9812#undef TARGET_LITTLE_NAME
9813
9814#undef TARGET_BIG_SYM
9815#define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9816#undef TARGET_BIG_NAME
9817#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9818
9819#undef ELF_OSABI
9820#define ELF_OSABI ELFOSABI_FREEBSD
9821
9822#undef elf32_bed
9823#define elf32_bed elf32_powerpc_fbsd_bed
9824
9825#include "elf32-target.h"
9826
9d8504b1
PB		 9827/* VxWorks Target */
9828
9829#undef TARGET_LITTLE_SYM
9830#undef TARGET_LITTLE_NAME
9831
9832#undef TARGET_BIG_SYM
9833#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9834#undef TARGET_BIG_NAME
9835#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9836
7b8e7dad
AM		 9837#undef ELF_OSABI
9838
d5e3d971
PB		 9839/* VxWorks uses the elf default section flags for .plt. */
9840static const struct bfd_elf_special_section *
9841ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 9842{
d5e3d971
PB		 9843 if (sec->name == NULL)
9844 return NULL;
9845
9846 if (strcmp (sec->name, ".plt") == 0)
9847 return _bfd_elf_get_sec_type_attr (abfd, sec);
9848
9849 return ppc_elf_get_sec_type_attr (abfd, sec);
9850}
9d8504b1
PB		 9851
9852/* Like ppc_elf_link_hash_table_create, but overrides
9853 appropriately for VxWorks. */
9854static struct bfd_link_hash_table *
9855ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9856{
9857 struct bfd_link_hash_table *ret;
9858
9859 ret = ppc_elf_link_hash_table_create (abfd);
9860 if (ret)
9861 {
9862 struct ppc_elf_link_hash_table *htab
9863 = (struct ppc_elf_link_hash_table *)ret;
9864 htab->is_vxworks = 1;
4a3dc543 9865 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB		 9866 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9867 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9868 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9869 }
9870 return ret;
9871}
9872
9873/* Tweak magic VxWorks symbols as they are loaded. */
9874static bfd_boolean
9875ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9876 struct bfd_link_info *info,
9877 Elf_Internal_Sym *sym,
9878 const char **namep ATTRIBUTE_UNUSED,
9879 flagword *flagsp ATTRIBUTE_UNUSED,
9880 asection **secp,
9881 bfd_vma *valp)
9882{
9883 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9884 valp))
9885 return FALSE;
9886
9887 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9888}
9889
9d8504b1
PB		 9890static void
9891ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9892{
9893 ppc_elf_final_write_processing(abfd, linker);
9894 elf_vxworks_final_write_processing(abfd, linker);
9895}
9896
9897/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9898 define it. */
9899#undef elf_backend_want_plt_sym
9900#define elf_backend_want_plt_sym 1
9901#undef elf_backend_want_got_plt
9902#define elf_backend_want_got_plt 1
9903#undef elf_backend_got_symbol_offset
9904#define elf_backend_got_symbol_offset 0
9905#undef elf_backend_plt_not_loaded
9906#define elf_backend_plt_not_loaded 0
9907#undef elf_backend_plt_readonly
9908#define elf_backend_plt_readonly 1
9909#undef elf_backend_got_header_size
9910#define elf_backend_got_header_size 12
9911
468392fb
AM		 9912#undef bfd_elf32_get_synthetic_symtab
9913
9d8504b1
PB		 9914#undef bfd_elf32_bfd_link_hash_table_create
9915#define bfd_elf32_bfd_link_hash_table_create \
9916 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB		 9917#undef elf_backend_add_symbol_hook
9918#define elf_backend_add_symbol_hook \
9919 ppc_elf_vxworks_add_symbol_hook
9920#undef elf_backend_link_output_symbol_hook
9921#define elf_backend_link_output_symbol_hook \
9c72ff84 9922 elf_vxworks_link_output_symbol_hook
9d8504b1
PB		 9923#undef elf_backend_final_write_processing
9924#define elf_backend_final_write_processing \
9925 ppc_elf_vxworks_final_write_processing
d5e3d971
PB		 9926#undef elf_backend_get_sec_type_attr
9927#define elf_backend_get_sec_type_attr \
9928 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB		 9929#undef elf_backend_emit_relocs
9930#define elf_backend_emit_relocs \
9931 elf_vxworks_emit_relocs
9932
9933#undef elf32_bed
9934#define elf32_bed ppc_elf_vxworks_bed
e054468f 9935#undef elf_backend_post_process_headers
9d8504b1
PB		 9936
9937#include "elf32-target.h"
GDB Binutils - Deliverables
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