1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2019 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "opcode/ppc.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE(htab, h) \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
79 /* VxWorks uses its own plt layout, filled in by the static linker. */
81 /* The standard VxWorks PLT entry. */
82 #define VXWORKS_PLT_ENTRY_SIZE 32
83 static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE / 4] =
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
95 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE / 4] =
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
108 /* The initial VxWorks PLT entry. */
109 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
122 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
125 0x819e0008, /* lwz r12,8(r30) */
126 0x7d8903a6, /* mtctr r12 */
127 0x819e0004, /* lwz r12,4(r30) */
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
135 /* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
138 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 /* The number of relocations in the PLTResolve slot. */
141 #define VXWORKS_PLTRESOLVE_RELOCS 2
142 /* The number of relocations in the PLTResolve slot when creating
144 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
146 /* Some instructions. */
147 #define ADDIS_11_11 0x3d6b0000
148 #define ADDIS_11_30 0x3d7e0000
149 #define ADDIS_12_12 0x3d8c0000
150 #define ADDI_11_11 0x396b0000
151 #define ADD_0_11_11 0x7c0b5a14
152 #define ADD_3_12_2 0x7c6c1214
153 #define ADD_11_0_11 0x7d605a14
155 #define BA 0x48000002
156 #define BCL_20_31 0x429f0005
157 #define BCTR 0x4e800420
158 #define BEQLR 0x4d820020
159 #define CMPWI_11_0 0x2c0b0000
160 #define LIS_11 0x3d600000
161 #define LIS_12 0x3d800000
162 #define LWZU_0_12 0x840c0000
163 #define LWZ_0_12 0x800c0000
164 #define LWZ_11_3 0x81630000
165 #define LWZ_11_11 0x816b0000
166 #define LWZ_11_30 0x817e0000
167 #define LWZ_12_3 0x81830000
168 #define LWZ_12_12 0x818c0000
169 #define MR_0_3 0x7c601b78
170 #define MR_3_0 0x7c030378
171 #define MFLR_0 0x7c0802a6
172 #define MFLR_12 0x7d8802a6
173 #define MTCTR_0 0x7c0903a6
174 #define MTCTR_11 0x7d6903a6
175 #define MTLR_0 0x7c0803a6
176 #define NOP 0x60000000
177 #define SUB_11_11_12 0x7d6c5850
179 /* Offset of tp and dtp pointers from start of TLS block. */
180 #define TP_OFFSET 0x7000
181 #define DTP_OFFSET 0x8000
183 /* The value of a defined global symbol. */
184 #define SYM_VAL(SYM) \
185 ((SYM)->root.u.def.section->output_section->vma \
186 + (SYM)->root.u.def.section->output_offset \
187 + (SYM)->root.u.def.value)
189 /* Relocation HOWTO's. */
190 /* Like other ELF RELA targets that don't apply multiple
191 field-altering relocations to the same localation, src_mask is
192 always zero and pcrel_offset is the same as pc_relative.
193 PowerPC can always use a zero bitpos, even when the field is not at
194 the LSB. For example, a REL24 could use rightshift=2, bisize=24
195 and bitpos=2 which matches the ABI description, or as we do here,
196 rightshift=0, bitsize=26 and bitpos=0. */
197 #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \
198 complain, special_func) \
199 HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \
200 complain_overflow_ ## complain, special_func, \
201 #type, FALSE, 0, mask, pc_relative)
203 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
205 static reloc_howto_type ppc_elf_howto_raw[] = {
206 /* This reloc does nothing. */
207 HOW (R_PPC_NONE, 3, 0, 0, 0, FALSE, dont,
208 bfd_elf_generic_reloc),
210 /* A standard 32 bit relocation. */
211 HOW (R_PPC_ADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
212 bfd_elf_generic_reloc),
214 /* An absolute 26 bit branch; the lower two bits must be zero.
215 FIXME: we don't check that, we just clear them. */
216 HOW (R_PPC_ADDR24, 2, 26, 0x3fffffc, 0, FALSE, signed,
217 bfd_elf_generic_reloc),
219 /* A standard 16 bit relocation. */
220 HOW (R_PPC_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield,
221 bfd_elf_generic_reloc),
223 /* A 16 bit relocation without overflow. */
224 HOW (R_PPC_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont,
225 bfd_elf_generic_reloc),
227 /* The high order 16 bits of an address. */
228 HOW (R_PPC_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont,
229 bfd_elf_generic_reloc),
231 /* The high order 16 bits of an address, plus 1 if the contents of
232 the low 16 bits, treated as a signed number, is negative. */
233 HOW (R_PPC_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont,
234 ppc_elf_addr16_ha_reloc),
236 /* An absolute 16 bit branch; the lower two bits must be zero.
237 FIXME: we don't check that, we just clear them. */
238 HOW (R_PPC_ADDR14, 2, 16, 0xfffc, 0, FALSE, signed,
239 bfd_elf_generic_reloc),
241 /* An absolute 16 bit branch, for which bit 10 should be set to
242 indicate that the branch is expected to be taken. The lower two
243 bits must be zero. */
244 HOW (R_PPC_ADDR14_BRTAKEN, 2, 16, 0xfffc, 0, FALSE, signed,
245 bfd_elf_generic_reloc),
247 /* An absolute 16 bit branch, for which bit 10 should be set to
248 indicate that the branch is not expected to be taken. The lower
249 two bits must be zero. */
250 HOW (R_PPC_ADDR14_BRNTAKEN, 2, 16, 0xfffc, 0, FALSE, signed,
251 bfd_elf_generic_reloc),
253 /* A relative 26 bit branch; the lower two bits must be zero. */
254 HOW (R_PPC_REL24, 2, 26, 0x3fffffc, 0, TRUE, signed,
255 bfd_elf_generic_reloc),
257 /* A relative 16 bit branch; the lower two bits must be zero. */
258 HOW (R_PPC_REL14, 2, 16, 0xfffc, 0, TRUE, signed,
259 bfd_elf_generic_reloc),
261 /* A relative 16 bit branch. Bit 10 should be set to indicate that
262 the branch is expected to be taken. The lower two bits must be
264 HOW (R_PPC_REL14_BRTAKEN, 2, 16, 0xfffc, 0, TRUE, signed,
265 bfd_elf_generic_reloc),
267 /* A relative 16 bit branch. Bit 10 should be set to indicate that
268 the branch is not expected to be taken. The lower two bits must
270 HOW (R_PPC_REL14_BRNTAKEN, 2, 16, 0xfffc, 0, TRUE, signed,
271 bfd_elf_generic_reloc),
273 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
275 HOW (R_PPC_GOT16, 1, 16, 0xffff, 0, FALSE, signed,
276 ppc_elf_unhandled_reloc),
278 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
280 HOW (R_PPC_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont,
281 ppc_elf_unhandled_reloc),
283 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
285 HOW (R_PPC_GOT16_HI, 1, 16, 0xffff, 16, FALSE, dont,
286 ppc_elf_unhandled_reloc),
288 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
290 HOW (R_PPC_GOT16_HA, 1, 16, 0xffff, 16, FALSE, dont,
291 ppc_elf_unhandled_reloc),
293 /* Like R_PPC_REL24, but referring to the procedure linkage table
294 entry for the symbol. */
295 HOW (R_PPC_PLTREL24, 2, 26, 0x3fffffc, 0, TRUE, signed,
296 ppc_elf_unhandled_reloc),
298 /* This is used only by the dynamic linker. The symbol should exist
299 both in the object being run and in some shared library. The
300 dynamic linker copies the data addressed by the symbol from the
301 shared library into the object, because the object being
302 run has to have the data at some particular address. */
303 HOW (R_PPC_COPY, 2, 32, 0, 0, FALSE, dont,
304 ppc_elf_unhandled_reloc),
306 /* Like R_PPC_ADDR32, but used when setting global offset table
308 HOW (R_PPC_GLOB_DAT, 2, 32, 0xffffffff, 0, FALSE, dont,
309 ppc_elf_unhandled_reloc),
311 /* Marks a procedure linkage table entry for a symbol. */
312 HOW (R_PPC_JMP_SLOT, 2, 32, 0, 0, FALSE, dont,
313 ppc_elf_unhandled_reloc),
315 /* Used only by the dynamic linker. When the object is run, this
316 longword is set to the load address of the object, plus the
318 HOW (R_PPC_RELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont,
319 bfd_elf_generic_reloc),
321 /* Like R_PPC_REL24, but uses the value of the symbol within the
322 object rather than the final value. Normally used for
323 _GLOBAL_OFFSET_TABLE_. */
324 HOW (R_PPC_LOCAL24PC, 2, 26, 0x3fffffc, 0, TRUE, signed,
325 bfd_elf_generic_reloc),
327 /* Like R_PPC_ADDR32, but may be unaligned. */
328 HOW (R_PPC_UADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
329 bfd_elf_generic_reloc),
331 /* Like R_PPC_ADDR16, but may be unaligned. */
332 HOW (R_PPC_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield,
333 bfd_elf_generic_reloc),
335 /* 32-bit PC relative */
336 HOW (R_PPC_REL32, 2, 32, 0xffffffff, 0, TRUE, dont,
337 bfd_elf_generic_reloc),
339 /* 32-bit relocation to the symbol's procedure linkage table.
340 FIXME: not supported. */
341 HOW (R_PPC_PLT32, 2, 32, 0, 0, FALSE, dont,
342 ppc_elf_unhandled_reloc),
344 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
345 FIXME: not supported. */
346 HOW (R_PPC_PLTREL32, 2, 32, 0, 0, TRUE, dont,
347 ppc_elf_unhandled_reloc),
349 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
351 HOW (R_PPC_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont,
352 ppc_elf_unhandled_reloc),
354 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
356 HOW (R_PPC_PLT16_HI, 1, 16, 0xffff, 16, FALSE, dont,
357 ppc_elf_unhandled_reloc),
359 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
361 HOW (R_PPC_PLT16_HA, 1, 16, 0xffff, 16, FALSE, dont,
362 ppc_elf_unhandled_reloc),
364 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
366 HOW (R_PPC_SDAREL16, 1, 16, 0xffff, 0, FALSE, signed,
367 ppc_elf_unhandled_reloc),
369 /* 16-bit section relative relocation. */
370 HOW (R_PPC_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed,
371 ppc_elf_unhandled_reloc),
373 /* 16-bit lower half section relative relocation. */
374 HOW (R_PPC_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont,
375 ppc_elf_unhandled_reloc),
377 /* 16-bit upper half section relative relocation. */
378 HOW (R_PPC_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, dont,
379 ppc_elf_unhandled_reloc),
381 /* 16-bit upper half adjusted section relative relocation. */
382 HOW (R_PPC_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, dont,
383 ppc_elf_unhandled_reloc),
385 /* Marker relocs for TLS. */
386 HOW (R_PPC_TLS, 2, 32, 0, 0, FALSE, dont,
387 bfd_elf_generic_reloc),
389 HOW (R_PPC_TLSGD, 2, 32, 0, 0, FALSE, dont,
390 bfd_elf_generic_reloc),
392 HOW (R_PPC_TLSLD, 2, 32, 0, 0, FALSE, dont,
393 bfd_elf_generic_reloc),
395 /* Marker relocs on inline plt call instructions. */
396 HOW (R_PPC_PLTSEQ, 2, 32, 0, 0, FALSE, dont,
397 bfd_elf_generic_reloc),
399 HOW (R_PPC_PLTCALL, 2, 32, 0, 0, FALSE, dont,
400 bfd_elf_generic_reloc),
402 /* Computes the load module index of the load module that contains the
403 definition of its TLS sym. */
404 HOW (R_PPC_DTPMOD32, 2, 32, 0xffffffff, 0, FALSE, dont,
405 ppc_elf_unhandled_reloc),
407 /* Computes a dtv-relative displacement, the difference between the value
408 of sym+add and the base address of the thread-local storage block that
409 contains the definition of sym, minus 0x8000. */
410 HOW (R_PPC_DTPREL32, 2, 32, 0xffffffff, 0, FALSE, dont,
411 ppc_elf_unhandled_reloc),
413 /* A 16 bit dtprel reloc. */
414 HOW (R_PPC_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed,
415 ppc_elf_unhandled_reloc),
417 /* Like DTPREL16, but no overflow. */
418 HOW (R_PPC_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
419 ppc_elf_unhandled_reloc),
421 /* Like DTPREL16_LO, but next higher group of 16 bits. */
422 HOW (R_PPC_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
423 ppc_elf_unhandled_reloc),
425 /* Like DTPREL16_HI, but adjust for low 16 bits. */
426 HOW (R_PPC_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
427 ppc_elf_unhandled_reloc),
429 /* Computes a tp-relative displacement, the difference between the value of
430 sym+add and the value of the thread pointer (r13). */
431 HOW (R_PPC_TPREL32, 2, 32, 0xffffffff, 0, FALSE, dont,
432 ppc_elf_unhandled_reloc),
434 /* A 16 bit tprel reloc. */
435 HOW (R_PPC_TPREL16, 1, 16, 0xffff, 0, FALSE, signed,
436 ppc_elf_unhandled_reloc),
438 /* Like TPREL16, but no overflow. */
439 HOW (R_PPC_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
440 ppc_elf_unhandled_reloc),
442 /* Like TPREL16_LO, but next higher group of 16 bits. */
443 HOW (R_PPC_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
444 ppc_elf_unhandled_reloc),
446 /* Like TPREL16_HI, but adjust for low 16 bits. */
447 HOW (R_PPC_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
448 ppc_elf_unhandled_reloc),
450 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
451 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
452 to the first entry. */
453 HOW (R_PPC_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed,
454 ppc_elf_unhandled_reloc),
456 /* Like GOT_TLSGD16, but no overflow. */
457 HOW (R_PPC_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont,
458 ppc_elf_unhandled_reloc),
460 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
461 HOW (R_PPC_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, dont,
462 ppc_elf_unhandled_reloc),
464 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
465 HOW (R_PPC_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, dont,
466 ppc_elf_unhandled_reloc),
468 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
469 with values (sym+add)@dtpmod and zero, and computes the offset to the
471 HOW (R_PPC_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed,
472 ppc_elf_unhandled_reloc),
474 /* Like GOT_TLSLD16, but no overflow. */
475 HOW (R_PPC_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont,
476 ppc_elf_unhandled_reloc),
478 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
479 HOW (R_PPC_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, dont,
480 ppc_elf_unhandled_reloc),
482 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
483 HOW (R_PPC_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, dont,
484 ppc_elf_unhandled_reloc),
486 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
487 the offset to the entry. */
488 HOW (R_PPC_GOT_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed,
489 ppc_elf_unhandled_reloc),
491 /* Like GOT_DTPREL16, but no overflow. */
492 HOW (R_PPC_GOT_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
493 ppc_elf_unhandled_reloc),
495 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
496 HOW (R_PPC_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
497 ppc_elf_unhandled_reloc),
499 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
500 HOW (R_PPC_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
501 ppc_elf_unhandled_reloc),
503 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
504 offset to the entry. */
505 HOW (R_PPC_GOT_TPREL16, 1, 16, 0xffff, 0, FALSE, signed,
506 ppc_elf_unhandled_reloc),
508 /* Like GOT_TPREL16, but no overflow. */
509 HOW (R_PPC_GOT_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
510 ppc_elf_unhandled_reloc),
512 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
513 HOW (R_PPC_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
514 ppc_elf_unhandled_reloc),
516 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
517 HOW (R_PPC_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
518 ppc_elf_unhandled_reloc),
520 /* The remaining relocs are from the Embedded ELF ABI, and are not
521 in the SVR4 ELF ABI. */
523 /* 32 bit value resulting from the addend minus the symbol. */
524 HOW (R_PPC_EMB_NADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
525 ppc_elf_unhandled_reloc),
527 /* 16 bit value resulting from the addend minus the symbol. */
528 HOW (R_PPC_EMB_NADDR16, 1, 16, 0xffff, 0, FALSE, signed,
529 ppc_elf_unhandled_reloc),
531 /* 16 bit value resulting from the addend minus the symbol. */
532 HOW (R_PPC_EMB_NADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont,
533 ppc_elf_unhandled_reloc),
535 /* The high order 16 bits of the addend minus the symbol. */
536 HOW (R_PPC_EMB_NADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont,
537 ppc_elf_unhandled_reloc),
539 /* The high order 16 bits of the result of the addend minus the address,
540 plus 1 if the contents of the low 16 bits, treated as a signed number,
542 HOW (R_PPC_EMB_NADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont,
543 ppc_elf_unhandled_reloc),
545 /* 16 bit value resulting from allocating a 4 byte word to hold an
546 address in the .sdata section, and returning the offset from
547 _SDA_BASE_ for that relocation. */
548 HOW (R_PPC_EMB_SDAI16, 1, 16, 0xffff, 0, FALSE, signed,
549 ppc_elf_unhandled_reloc),
551 /* 16 bit value resulting from allocating a 4 byte word to hold an
552 address in the .sdata2 section, and returning the offset from
553 _SDA2_BASE_ for that relocation. */
554 HOW (R_PPC_EMB_SDA2I16, 1, 16, 0xffff, 0, FALSE, signed,
555 ppc_elf_unhandled_reloc),
557 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
559 HOW (R_PPC_EMB_SDA2REL, 1, 16, 0xffff, 0, FALSE, signed,
560 ppc_elf_unhandled_reloc),
562 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
563 signed offset from the appropriate base, and filling in the register
564 field with the appropriate register (0, 2, or 13). */
565 HOW (R_PPC_EMB_SDA21, 2, 16, 0xffff, 0, FALSE, signed,
566 ppc_elf_unhandled_reloc),
568 /* Relocation not handled: R_PPC_EMB_MRKREF */
569 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
570 /* Relocation not handled: R_PPC_EMB_RELST_LO */
571 /* Relocation not handled: R_PPC_EMB_RELST_HI */
572 /* Relocation not handled: R_PPC_EMB_RELST_HA */
573 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
575 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
576 in the 16 bit signed offset from the appropriate base, and filling in the
577 register field with the appropriate register (0, 2, or 13). */
578 HOW (R_PPC_EMB_RELSDA, 1, 16, 0xffff, 0, FALSE, signed,
579 ppc_elf_unhandled_reloc),
581 /* A relative 8 bit branch. */
582 HOW (R_PPC_VLE_REL8, 1, 8, 0xff, 1, TRUE, signed,
583 bfd_elf_generic_reloc),
585 /* A relative 15 bit branch. */
586 HOW (R_PPC_VLE_REL15, 2, 16, 0xfffe, 0, TRUE, signed,
587 bfd_elf_generic_reloc),
589 /* A relative 24 bit branch. */
590 HOW (R_PPC_VLE_REL24, 2, 25, 0x1fffffe, 0, TRUE, signed,
591 bfd_elf_generic_reloc),
593 /* The 16 LSBS in split16a format. */
594 HOW (R_PPC_VLE_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont,
595 ppc_elf_unhandled_reloc),
597 /* The 16 LSBS in split16d format. */
598 HOW (R_PPC_VLE_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont,
599 ppc_elf_unhandled_reloc),
601 /* Bits 16-31 split16a format. */
602 HOW (R_PPC_VLE_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
603 ppc_elf_unhandled_reloc),
605 /* Bits 16-31 split16d format. */
606 HOW (R_PPC_VLE_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
607 ppc_elf_unhandled_reloc),
609 /* Bits 16-31 (High Adjusted) in split16a format. */
610 HOW (R_PPC_VLE_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
611 ppc_elf_unhandled_reloc),
613 /* Bits 16-31 (High Adjusted) in split16d format. */
614 HOW (R_PPC_VLE_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
615 ppc_elf_unhandled_reloc),
617 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
618 instructions. If the register base is 0 then the linker changes
619 the e_add16i to an e_li instruction. */
620 HOW (R_PPC_VLE_SDA21, 2, 16, 0xffff, 0, FALSE, signed,
621 ppc_elf_unhandled_reloc),
623 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
624 HOW (R_PPC_VLE_SDA21_LO, 2, 16, 0xffff, 0, FALSE, dont,
625 ppc_elf_unhandled_reloc),
627 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
628 HOW (R_PPC_VLE_SDAREL_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont,
629 ppc_elf_unhandled_reloc),
631 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
632 HOW (R_PPC_VLE_SDAREL_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont,
633 ppc_elf_unhandled_reloc),
635 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
636 HOW (R_PPC_VLE_SDAREL_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
637 ppc_elf_unhandled_reloc),
639 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
640 HOW (R_PPC_VLE_SDAREL_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
641 ppc_elf_unhandled_reloc),
643 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
644 HOW (R_PPC_VLE_SDAREL_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
645 ppc_elf_unhandled_reloc),
647 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
648 HOW (R_PPC_VLE_SDAREL_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
649 ppc_elf_unhandled_reloc),
651 /* e_li split20 format. */
652 HOW (R_PPC_VLE_ADDR20, 2, 20, 0x1f7fff, 0, FALSE, dont,
653 ppc_elf_unhandled_reloc),
655 HOW (R_PPC_IRELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont,
656 ppc_elf_unhandled_reloc),
658 /* A 16 bit relative relocation. */
659 HOW (R_PPC_REL16, 1, 16, 0xffff, 0, TRUE, signed,
660 bfd_elf_generic_reloc),
662 /* A 16 bit relative relocation without overflow. */
663 HOW (R_PPC_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont,
664 bfd_elf_generic_reloc),
666 /* The high order 16 bits of a relative address. */
667 HOW (R_PPC_REL16_HI, 1, 16, 0xffff, 16, TRUE, dont,
668 bfd_elf_generic_reloc),
670 /* The high order 16 bits of a relative address, plus 1 if the contents of
671 the low 16 bits, treated as a signed number, is negative. */
672 HOW (R_PPC_REL16_HA, 1, 16, 0xffff, 16, TRUE, dont,
673 ppc_elf_addr16_ha_reloc),
675 /* Like R_PPC_REL16_HA but for split field in addpcis. */
676 HOW (R_PPC_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed,
677 ppc_elf_addr16_ha_reloc),
679 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
680 HOW (R_PPC_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed,
681 ppc_elf_addr16_ha_reloc),
683 /* GNU extension to record C++ vtable hierarchy. */
684 HOW (R_PPC_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont,
687 /* GNU extension to record C++ vtable member usage. */
688 HOW (R_PPC_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont,
691 /* Phony reloc to handle AIX style TOC entries. */
692 HOW (R_PPC_TOC16, 1, 16, 0xffff, 0, FALSE, signed,
693 ppc_elf_unhandled_reloc),
696 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
699 ppc_elf_howto_init (void)
701 unsigned int i, type;
704 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
707 type = ppc_elf_howto_raw[i].type;
708 if (type >= (sizeof (ppc_elf_howto_table)
709 / sizeof (ppc_elf_howto_table[0])))
711 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
715 static reloc_howto_type *
716 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
717 bfd_reloc_code_real_type code)
719 enum elf_ppc_reloc_type r;
721 /* Initialize howto table if not already done. */
722 if (!ppc_elf_howto_table[R_PPC_ADDR32])
723 ppc_elf_howto_init ();
730 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
731 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
732 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
733 case BFD_RELOC_PPC64_ADDR16_DS:
734 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
735 case BFD_RELOC_PPC64_ADDR16_LO_DS:
736 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
737 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
738 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
739 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
740 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
741 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
742 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
743 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
744 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
745 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
746 case BFD_RELOC_PPC64_GOT16_DS:
747 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
748 case BFD_RELOC_PPC64_GOT16_LO_DS:
749 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
750 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
751 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
752 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
753 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
754 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
755 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
756 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
757 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
758 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
759 case BFD_RELOC_PPC64_PLT16_LO_DS:
760 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
761 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
762 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
763 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
764 case BFD_RELOC_PPC64_SECTOFF_DS:
765 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
766 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
767 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
768 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
769 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
770 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
771 case BFD_RELOC_PPC64_TOC16_DS:
772 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
773 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
774 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
775 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
776 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
777 case BFD_RELOC_PPC64_TPREL16_DS:
778 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
779 case BFD_RELOC_PPC64_TPREL16_LO_DS:
780 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
781 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
782 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
783 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
784 case BFD_RELOC_PPC64_DTPREL16_DS:
785 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
786 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
787 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
788 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
789 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
790 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
791 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
792 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
793 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
794 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
795 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
796 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
797 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
798 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
799 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
800 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
801 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
802 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
803 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
804 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
805 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
806 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
807 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
808 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
809 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
810 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
811 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
812 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
813 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
814 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
815 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
816 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
817 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
818 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
819 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
820 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
821 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
822 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
823 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
824 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
825 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
826 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
827 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
828 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
829 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
830 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
831 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
832 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
833 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
834 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
835 r = R_PPC_VLE_SDAREL_LO16A;
837 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
838 r = R_PPC_VLE_SDAREL_LO16D;
840 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
841 r = R_PPC_VLE_SDAREL_HI16A;
843 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
844 r = R_PPC_VLE_SDAREL_HI16D;
846 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
847 r = R_PPC_VLE_SDAREL_HA16A;
849 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
850 r = R_PPC_VLE_SDAREL_HA16D;
852 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
853 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
854 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
855 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
856 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
857 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
858 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
859 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
862 return ppc_elf_howto_table[r];
865 static reloc_howto_type *
866 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
872 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
874 if (ppc_elf_howto_raw[i].name != NULL
875 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
876 return &ppc_elf_howto_raw[i];
881 /* Set the howto pointer for a PowerPC ELF reloc. */
884 ppc_elf_info_to_howto (bfd *abfd,
886 Elf_Internal_Rela *dst)
890 /* Initialize howto table if not already done. */
891 if (!ppc_elf_howto_table[R_PPC_ADDR32])
892 ppc_elf_howto_init ();
894 r_type = ELF32_R_TYPE (dst->r_info);
895 if (r_type >= R_PPC_max)
897 /* xgettext:c-format */
898 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
900 bfd_set_error (bfd_error_bad_value);
904 cache_ptr->howto = ppc_elf_howto_table[r_type];
906 /* Just because the above assert didn't trigger doesn't mean that
907 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
908 if (cache_ptr->howto == NULL)
910 /* xgettext:c-format */
911 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
913 bfd_set_error (bfd_error_bad_value);
921 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
923 static bfd_reloc_status_type
924 ppc_elf_addr16_ha_reloc (bfd *abfd,
925 arelent *reloc_entry,
928 asection *input_section,
930 char **error_message ATTRIBUTE_UNUSED)
932 enum elf_ppc_reloc_type r_type;
934 bfd_size_type octets;
937 if (output_bfd != NULL)
939 reloc_entry->address += input_section->output_offset;
943 reloc_entry->addend += 0x8000;
944 r_type = reloc_entry->howto->type;
945 if (r_type != R_PPC_REL16DX_HA)
946 return bfd_reloc_continue;
949 if (!bfd_is_com_section (symbol->section))
950 value = symbol->value;
951 value += (reloc_entry->addend
952 + symbol->section->output_offset
953 + symbol->section->output_section->vma);
954 value -= (reloc_entry->address
955 + input_section->output_offset
956 + input_section->output_section->vma);
959 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
960 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
962 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
963 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
967 static bfd_reloc_status_type
968 ppc_elf_unhandled_reloc (bfd *abfd,
969 arelent *reloc_entry,
972 asection *input_section,
974 char **error_message)
976 /* If this is a relocatable link (output_bfd test tells us), just
977 call the generic function. Any adjustment will be done at final
979 if (output_bfd != NULL)
980 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
981 input_section, output_bfd, error_message);
983 if (error_message != NULL)
986 sprintf (buf, _("generic linker can't handle %s"),
987 reloc_entry->howto->name);
988 *error_message = buf;
990 return bfd_reloc_dangerous;
993 /* Sections created by the linker. */
995 typedef struct elf_linker_section
997 /* Pointer to the bfd section. */
1001 /* Associated bss section name. */
1002 const char *bss_name;
1003 /* Associated symbol name. */
1004 const char *sym_name;
1005 /* Associated symbol. */
1006 struct elf_link_hash_entry *sym;
1007 } elf_linker_section_t;
1009 /* Linked list of allocated pointer entries. This hangs off of the
1010 symbol lists, and provides allows us to return different pointers,
1011 based on different addend's. */
1013 typedef struct elf_linker_section_pointers
1015 /* next allocated pointer for this symbol */
1016 struct elf_linker_section_pointers *next;
1017 /* offset of pointer from beginning of section */
1021 /* which linker section this is */
1022 elf_linker_section_t *lsect;
1023 } elf_linker_section_pointers_t;
1025 struct ppc_elf_obj_tdata
1027 struct elf_obj_tdata elf;
1029 /* A mapping from local symbols to offsets into the various linker
1030 sections added. This is index by the symbol index. */
1031 elf_linker_section_pointers_t **linker_section_pointers;
1033 /* Flags used to auto-detect plt type. */
1034 unsigned int makes_plt_call : 1;
1035 unsigned int has_rel16 : 1;
1038 #define ppc_elf_tdata(bfd) \
1039 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1041 #define elf_local_ptr_offsets(bfd) \
1042 (ppc_elf_tdata (bfd)->linker_section_pointers)
1044 #define is_ppc_elf(bfd) \
1045 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1046 && elf_object_id (bfd) == PPC32_ELF_DATA)
1048 /* Override the generic function because we store some extras. */
1051 ppc_elf_mkobject (bfd *abfd)
1053 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1057 /* When defaulting arch/mach, decode apuinfo to find a better match. */
1060 _bfd_elf_ppc_set_arch (bfd *abfd)
1062 unsigned long mach = 0;
1064 unsigned char *contents;
1066 if (abfd->arch_info->bits_per_word == 32
1067 && bfd_big_endian (abfd))
1070 for (s = abfd->sections; s != NULL; s = s->next)
1071 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
1074 mach = bfd_mach_ppc_vle;
1079 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1082 && bfd_malloc_and_get_section (abfd, s, &contents))
1084 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
1087 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
1089 unsigned int val = bfd_get_32 (abfd, contents + i);
1092 case PPC_APUINFO_PMR:
1093 case PPC_APUINFO_RFMCI:
1095 mach = bfd_mach_ppc_titan;
1098 case PPC_APUINFO_ISEL:
1099 case PPC_APUINFO_CACHELCK:
1100 if (mach == bfd_mach_ppc_titan)
1101 mach = bfd_mach_ppc_e500mc;
1104 case PPC_APUINFO_SPE:
1105 case PPC_APUINFO_EFS:
1106 case PPC_APUINFO_BRLOCK:
1107 if (mach != bfd_mach_ppc_vle)
1108 mach = bfd_mach_ppc_e500;
1111 case PPC_APUINFO_VLE:
1112 mach = bfd_mach_ppc_vle;
1123 if (mach != 0 && mach != -1ul)
1125 const bfd_arch_info_type *arch;
1127 for (arch = abfd->arch_info->next; arch; arch = arch->next)
1128 if (arch->mach == mach)
1130 abfd->arch_info = arch;
1137 /* Fix bad default arch selected for a 32 bit input bfd when the
1138 default is 64 bit. Also select arch based on apuinfo. */
1141 ppc_elf_object_p (bfd *abfd)
1143 if (!abfd->arch_info->the_default)
1146 if (abfd->arch_info->bits_per_word == 64)
1148 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1150 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1152 /* Relies on arch after 64 bit default being 32 bit default. */
1153 abfd->arch_info = abfd->arch_info->next;
1154 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1157 return _bfd_elf_ppc_set_arch (abfd);
1160 /* Function to set whether a module needs the -mrelocatable bit set. */
1163 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1165 BFD_ASSERT (!elf_flags_init (abfd)
1166 || elf_elfheader (abfd)->e_flags == flags);
1168 elf_elfheader (abfd)->e_flags = flags;
1169 elf_flags_init (abfd) = TRUE;
1173 /* Support for core dump NOTE sections. */
1176 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1181 switch (note->descsz)
1186 case 268: /* Linux/PPC. */
1188 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1191 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1200 /* Make a ".reg/999" section. */
1201 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1202 size, note->descpos + offset);
1206 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1208 switch (note->descsz)
1213 case 128: /* Linux/PPC elf_prpsinfo. */
1214 elf_tdata (abfd)->core->pid
1215 = bfd_get_32 (abfd, note->descdata + 16);
1216 elf_tdata (abfd)->core->program
1217 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1218 elf_tdata (abfd)->core->command
1219 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1222 /* Note that for some reason, a spurious space is tacked
1223 onto the end of the args in some (at least one anyway)
1224 implementations, so strip it off if it exists. */
1227 char *command = elf_tdata (abfd)->core->command;
1228 int n = strlen (command);
1230 if (0 < n && command[n - 1] == ' ')
1231 command[n - 1] = '\0';
1238 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1247 char data[128] ATTRIBUTE_NONSTRING;
1250 va_start (ap, note_type);
1251 memset (data, 0, sizeof (data));
1252 strncpy (data + 32, va_arg (ap, const char *), 16);
1253 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
1255 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
1256 -Wstringop-truncation:
1257 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
1259 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
1261 strncpy (data + 48, va_arg (ap, const char *), 80);
1262 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
1266 return elfcore_write_note (abfd, buf, bufsiz,
1267 "CORE", note_type, data, sizeof (data));
1278 va_start (ap, note_type);
1279 memset (data, 0, 72);
1280 pid = va_arg (ap, long);
1281 bfd_put_32 (abfd, pid, data + 24);
1282 cursig = va_arg (ap, int);
1283 bfd_put_16 (abfd, cursig, data + 12);
1284 greg = va_arg (ap, const void *);
1285 memcpy (data + 72, greg, 192);
1286 memset (data + 264, 0, 4);
1288 return elfcore_write_note (abfd, buf, bufsiz,
1289 "CORE", note_type, data, sizeof (data));
1295 ppc_elf_lookup_section_flags (char *flag_name)
1298 if (!strcmp (flag_name, "SHF_PPC_VLE"))
1304 /* Return address for Ith PLT stub in section PLT, for relocation REL
1305 or (bfd_vma) -1 if it should not be included. */
1308 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1309 const asection *plt ATTRIBUTE_UNUSED,
1312 return rel->address;
1315 /* Handle a PowerPC specific section when reading an object file. This
1316 is called when bfd_section_from_shdr finds a section with an unknown
1320 ppc_elf_section_from_shdr (bfd *abfd,
1321 Elf_Internal_Shdr *hdr,
1328 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1331 newsect = hdr->bfd_section;
1332 flags = bfd_get_section_flags (abfd, newsect);
1333 if (hdr->sh_flags & SHF_EXCLUDE)
1334 flags |= SEC_EXCLUDE;
1336 if (hdr->sh_type == SHT_ORDERED)
1337 flags |= SEC_SORT_ENTRIES;
1339 bfd_set_section_flags (abfd, newsect, flags);
1343 /* Set up any other section flags and such that may be necessary. */
1346 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1347 Elf_Internal_Shdr *shdr,
1350 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1351 shdr->sh_type = SHT_ORDERED;
1356 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1357 need to bump up the number of section headers. */
1360 ppc_elf_additional_program_headers (bfd *abfd,
1361 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1366 s = bfd_get_section_by_name (abfd, ".sbss2");
1367 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1370 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1371 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1377 /* Modify the segment map for VLE executables. */
1380 ppc_elf_modify_segment_map (bfd *abfd,
1381 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1383 struct elf_segment_map *m;
1385 /* At this point in the link, output sections have already been sorted by
1386 LMA and assigned to segments. All that is left to do is to ensure
1387 there is no mixing of VLE & non-VLE sections in a text segment.
1388 If we find that case, we split the segment.
1389 We maintain the original output section order. */
1391 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1393 struct elf_segment_map *n;
1396 unsigned int p_flags;
1398 if (m->p_type != PT_LOAD || m->count == 0)
1401 for (p_flags = PF_R, j = 0; j != m->count; ++j)
1403 if ((m->sections[j]->flags & SEC_READONLY) == 0)
1405 if ((m->sections[j]->flags & SEC_CODE) != 0)
1408 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
1409 p_flags |= PF_PPC_VLE;
1414 while (++j != m->count)
1416 unsigned int p_flags1 = PF_R;
1418 if ((m->sections[j]->flags & SEC_READONLY) == 0)
1420 if ((m->sections[j]->flags & SEC_CODE) != 0)
1423 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
1424 p_flags1 |= PF_PPC_VLE;
1425 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
1428 p_flags |= p_flags1;
1430 /* If we're splitting a segment which originally contained rw
1431 sections then those sections might now only be in one of the
1432 two parts. So always set p_flags if splitting, even if we
1433 are being called for objcopy with p_flags_valid set. */
1434 if (j != m->count || !m->p_flags_valid)
1436 m->p_flags_valid = 1;
1437 m->p_flags = p_flags;
1442 /* Sections 0..j-1 stay in this (current) segment,
1443 the remainder are put in a new segment.
1444 The scan resumes with the new segment. */
1446 amt = sizeof (struct elf_segment_map);
1447 amt += (m->count - j - 1) * sizeof (asection *);
1448 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
1452 n->p_type = PT_LOAD;
1453 n->count = m->count - j;
1454 for (k = 0; k < n->count; ++k)
1455 n->sections[k] = m->sections[j + k];
1457 m->p_size_valid = 0;
1465 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1466 .PPC.EMB.sbss0 a normal section, and not a bss section so
1467 that the linker doesn't crater when trying to make more than
1470 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1472 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1473 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1474 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1475 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1476 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1477 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1478 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
1479 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1480 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1481 { NULL, 0, 0, 0, 0 }
1484 /* This is what we want for new plt/got. */
1485 static struct bfd_elf_special_section ppc_alt_plt =
1486 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1488 static const struct bfd_elf_special_section *
1489 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
1491 const struct bfd_elf_special_section *ssect;
1493 /* See if this is one of the special sections. */
1494 if (sec->name == NULL)
1497 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1501 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1502 ssect = &ppc_alt_plt;
1506 return _bfd_elf_get_sec_type_attr (abfd, sec);
1509 /* Very simple linked list structure for recording apuinfo values. */
1510 typedef struct apuinfo_list
1512 struct apuinfo_list *next;
1513 unsigned long value;
1517 static apuinfo_list *head;
1518 static bfd_boolean apuinfo_set;
1521 apuinfo_list_init (void)
1524 apuinfo_set = FALSE;
1528 apuinfo_list_add (unsigned long value)
1530 apuinfo_list *entry = head;
1532 while (entry != NULL)
1534 if (entry->value == value)
1536 entry = entry->next;
1539 entry = bfd_malloc (sizeof (* entry));
1543 entry->value = value;
1549 apuinfo_list_length (void)
1551 apuinfo_list *entry;
1552 unsigned long count;
1554 for (entry = head, count = 0;
1556 entry = entry->next)
1562 static inline unsigned long
1563 apuinfo_list_element (unsigned long number)
1565 apuinfo_list * entry;
1569 entry = entry->next)
1572 return entry ? entry->value : 0;
1576 apuinfo_list_finish (void)
1578 apuinfo_list *entry;
1580 for (entry = head; entry;)
1582 apuinfo_list *next = entry->next;
1590 /* Scan the input BFDs and create a linked list of
1591 the APUinfo values that will need to be emitted. */
1594 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1598 char *buffer = NULL;
1599 bfd_size_type largest_input_size = 0;
1601 unsigned long length;
1602 const char *error_message = NULL;
1604 if (link_info == NULL)
1607 apuinfo_list_init ();
1609 /* Read in the input sections contents. */
1610 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
1612 unsigned long datum;
1614 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1618 /* xgettext:c-format */
1619 error_message = _("corrupt %s section in %pB");
1620 length = asec->size;
1625 if (largest_input_size < asec->size)
1629 largest_input_size = asec->size;
1630 buffer = bfd_malloc (largest_input_size);
1635 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
1636 || (bfd_bread (buffer, length, ibfd) != length))
1638 /* xgettext:c-format */
1639 error_message = _("unable to read in %s section from %pB");
1643 /* Verify the contents of the header. Note - we have to
1644 extract the values this way in order to allow for a
1645 host whose endian-ness is different from the target. */
1646 datum = bfd_get_32 (ibfd, buffer);
1647 if (datum != sizeof APUINFO_LABEL)
1650 datum = bfd_get_32 (ibfd, buffer + 8);
1654 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
1657 /* Get the number of bytes used for apuinfo entries. */
1658 datum = bfd_get_32 (ibfd, buffer + 4);
1659 if (datum + 20 != length)
1662 /* Scan the apuinfo section, building a list of apuinfo numbers. */
1663 for (i = 0; i < datum; i += 4)
1664 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
1667 error_message = NULL;
1671 /* Compute the size of the output section. */
1672 unsigned num_entries = apuinfo_list_length ();
1674 /* Set the output section size, if it exists. */
1675 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1677 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
1680 /* xgettext:c-format */
1681 error_message = _("warning: unable to set size of %s section in %pB");
1690 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
1693 /* Prevent the output section from accumulating the input sections'
1694 contents. We have already stored this in our linked list structure. */
1697 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
1698 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
1700 bfd_byte *contents ATTRIBUTE_UNUSED)
1702 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
1705 /* Finally we can generate the output section. */
1708 ppc_final_write_processing (bfd *abfd)
1713 unsigned num_entries;
1714 bfd_size_type length;
1716 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1723 length = asec->size;
1727 buffer = bfd_malloc (length);
1731 (_("failed to allocate space for new APUinfo section"));
1735 /* Create the apuinfo header. */
1736 num_entries = apuinfo_list_length ();
1737 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
1738 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
1739 bfd_put_32 (abfd, 0x2, buffer + 8);
1740 strcpy ((char *) buffer + 12, APUINFO_LABEL);
1743 for (i = 0; i < num_entries; i++)
1745 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
1749 if (length != asec->size)
1750 _bfd_error_handler (_("failed to compute new APUinfo section"));
1752 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
1753 _bfd_error_handler (_("failed to install new APUinfo section"));
1757 apuinfo_list_finish ();
1761 ppc_elf_final_write_processing (bfd *abfd)
1763 ppc_final_write_processing (abfd);
1764 return _bfd_elf_final_write_processing (abfd);
1768 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
1770 bfd_byte buf[4 * 4];
1772 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
1775 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
1776 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
1777 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
1778 && bfd_get_32 (abfd, buf + 12) == BCTR);
1782 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
1784 bfd_vma vma = *(bfd_vma *) ptr;
1785 return ((section->flags & SEC_ALLOC) != 0
1786 && section->vma <= vma
1787 && vma < section->vma + section->size);
1791 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
1792 long dynsymcount, asymbol **dynsyms,
1795 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
1796 asection *plt, *relplt, *dynamic, *glink;
1797 bfd_vma glink_vma = 0;
1798 bfd_vma resolv_vma = 0;
1802 long count, i, stub_delta;
1809 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
1812 if (dynsymcount <= 0)
1815 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
1819 plt = bfd_get_section_by_name (abfd, ".plt");
1823 /* Call common code to handle old-style executable PLTs. */
1824 if (elf_section_flags (plt) & SHF_EXECINSTR)
1825 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
1826 dynsymcount, dynsyms, ret);
1828 /* If this object was prelinked, the prelinker stored the address
1829 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
1830 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
1831 if (dynamic != NULL)
1833 bfd_byte *dynbuf, *extdyn, *extdynend;
1835 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
1837 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
1840 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1841 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1844 extdynend = extdyn + dynamic->size;
1845 for (; extdyn < extdynend; extdyn += extdynsize)
1847 Elf_Internal_Dyn dyn;
1848 (*swap_dyn_in) (abfd, extdyn, &dyn);
1850 if (dyn.d_tag == DT_NULL)
1853 if (dyn.d_tag == DT_PPC_GOT)
1855 unsigned int g_o_t = dyn.d_un.d_val;
1856 asection *got = bfd_get_section_by_name (abfd, ".got");
1858 && bfd_get_section_contents (abfd, got, buf,
1859 g_o_t - got->vma + 4, 4))
1860 glink_vma = bfd_get_32 (abfd, buf);
1867 /* Otherwise we read the first plt entry. */
1870 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
1871 glink_vma = bfd_get_32 (abfd, buf);
1877 /* The .glink section usually does not survive the final
1878 link; search for the section (usually .text) where the
1879 glink stubs now reside. */
1880 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
1884 /* Determine glink PLT resolver by reading the relative branch
1885 from the first glink stub. */
1886 if (bfd_get_section_contents (abfd, glink, buf,
1887 glink_vma - glink->vma, 4))
1889 unsigned int insn = bfd_get_32 (abfd, buf);
1891 /* The first glink stub may either branch to the resolver ... */
1893 if ((insn & ~0x3fffffc) == 0)
1894 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
1896 /* ... or fall through a bunch of NOPs. */
1897 else if ((insn ^ B ^ NOP) == 0)
1899 bfd_get_section_contents (abfd, glink, buf,
1900 glink_vma - glink->vma + i, 4);
1902 if (bfd_get_32 (abfd, buf) != NOP)
1904 resolv_vma = glink_vma + i;
1909 count = relplt->size / sizeof (Elf32_External_Rela);
1910 /* If the stubs are those for -shared/-pie then we might have
1911 multiple stubs for each plt entry. If that is the case then
1912 there is no way to associate stubs with their plt entries short
1913 of figuring out the GOT pointer value used in the stub.
1914 The offsets tested here need to cover all possible values of
1915 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
1916 stub_off = glink_vma - glink->vma;
1917 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
1918 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
1920 if (stub_delta > 32)
1923 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
1924 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
1927 size = count * sizeof (asymbol);
1928 p = relplt->relocation;
1929 for (i = 0; i < count; i++, p++)
1931 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
1933 size += sizeof ("+0x") - 1 + 8;
1936 size += sizeof (asymbol) + sizeof ("__glink");
1939 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
1941 s = *ret = bfd_malloc (size);
1945 stub_off = glink_vma - glink->vma;
1946 names = (char *) (s + count + 1 + (resolv_vma != 0));
1947 p = relplt->relocation + count - 1;
1948 for (i = 0; i < count; i++)
1952 stub_off -= stub_delta;
1953 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
1955 *s = **p->sym_ptr_ptr;
1956 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
1957 we are defining a symbol, ensure one of them is set. */
1958 if ((s->flags & BSF_LOCAL) == 0)
1959 s->flags |= BSF_GLOBAL;
1960 s->flags |= BSF_SYNTHETIC;
1962 s->value = stub_off;
1965 len = strlen ((*p->sym_ptr_ptr)->name);
1966 memcpy (names, (*p->sym_ptr_ptr)->name, len);
1970 memcpy (names, "+0x", sizeof ("+0x") - 1);
1971 names += sizeof ("+0x") - 1;
1972 bfd_sprintf_vma (abfd, names, p->addend);
1973 names += strlen (names);
1975 memcpy (names, "@plt", sizeof ("@plt"));
1976 names += sizeof ("@plt");
1981 /* Add a symbol at the start of the glink branch table. */
1982 memset (s, 0, sizeof *s);
1984 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
1986 s->value = glink_vma - glink->vma;
1988 memcpy (names, "__glink", sizeof ("__glink"));
1989 names += sizeof ("__glink");
1995 /* Add a symbol for the glink PLT resolver. */
1996 memset (s, 0, sizeof *s);
1998 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2000 s->value = resolv_vma - glink->vma;
2002 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2003 names += sizeof ("__glink_PLTresolve");
2011 /* The following functions are specific to the ELF linker, while
2012 functions above are used generally. They appear in this file more
2013 or less in the order in which they are called. eg.
2014 ppc_elf_check_relocs is called early in the link process,
2015 ppc_elf_finish_dynamic_sections is one of the last functions
2018 /* Track PLT entries needed for a given symbol. We might need more
2019 than one glink entry per symbol when generating a pic binary. */
2022 struct plt_entry *next;
2024 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2025 This field stores the offset into .got2 used to initialise the
2026 GOT pointer reg. It will always be at least 32768. (Current
2027 gcc always uses an offset of 32768, but ld -r will pack .got2
2028 sections together resulting in larger offsets). */
2031 /* The .got2 section. */
2034 /* PLT refcount or offset. */
2037 bfd_signed_vma refcount;
2041 /* .glink stub offset. */
2042 bfd_vma glink_offset;
2045 /* Of those relocs that might be copied as dynamic relocs, this
2046 function selects those that must be copied when linking a shared
2047 library or PIE, even when the symbol is local. */
2050 must_be_dyn_reloc (struct bfd_link_info *info,
2051 enum elf_ppc_reloc_type r_type)
2056 /* Only relative relocs can be resolved when the object load
2057 address isn't fixed. DTPREL32 is excluded because the
2058 dynamic linker needs to differentiate global dynamic from
2059 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
2064 case R_PPC_REL14_BRTAKEN:
2065 case R_PPC_REL14_BRNTAKEN:
2071 case R_PPC_TPREL16_LO:
2072 case R_PPC_TPREL16_HI:
2073 case R_PPC_TPREL16_HA:
2074 /* These relocations are relative but in a shared library the
2075 linker doesn't know the thread pointer base. */
2076 return bfd_link_dll (info);
2080 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2081 copying dynamic variables from a shared lib into an app's dynbss
2082 section, and instead use a dynamic relocation to point into the
2084 #define ELIMINATE_COPY_RELOCS 1
2086 /* Used to track dynamic relocations for local symbols. */
2087 struct ppc_dyn_relocs
2089 struct ppc_dyn_relocs *next;
2091 /* The input section of the reloc. */
2094 /* Total number of relocs copied for the input section. */
2095 unsigned int count : 31;
2097 /* Whether this entry is for STT_GNU_IFUNC symbols. */
2098 unsigned int ifunc : 1;
2101 /* PPC ELF linker hash entry. */
2103 struct ppc_elf_link_hash_entry
2105 struct elf_link_hash_entry elf;
2107 /* If this symbol is used in the linker created sections, the processor
2108 specific backend uses this field to map the field into the offset
2109 from the beginning of the section. */
2110 elf_linker_section_pointers_t *linker_section_pointer;
2112 /* Track dynamic relocs copied for this symbol. */
2113 struct elf_dyn_relocs *dyn_relocs;
2115 /* Contexts in which symbol is used in the GOT.
2116 Bits are or'd into the mask as the corresponding relocs are
2117 encountered during check_relocs, with TLS_TLS being set when any
2118 of the other TLS bits are set. tls_optimize clears bits when
2119 optimizing to indicate the corresponding GOT entry type is not
2120 needed. If set, TLS_TLS is never cleared. tls_optimize may also
2121 set TLS_GDIE when a GD reloc turns into an IE one.
2122 These flags are also kept for local symbols. */
2123 #define TLS_TLS 1 /* Any TLS reloc. */
2124 #define TLS_GD 2 /* GD reloc. */
2125 #define TLS_LD 4 /* LD reloc. */
2126 #define TLS_TPREL 8 /* TPREL reloc, => IE. */
2127 #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
2128 #define TLS_MARK 32 /* __tls_get_addr call marked. */
2129 #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */
2130 unsigned char tls_mask;
2132 /* The above field is also used to mark function symbols. In which
2133 case TLS_TLS will be 0. */
2134 #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
2135 #define PLT_KEEP 4 /* inline plt call requires plt entry. */
2136 #define NON_GOT 256 /* local symbol plt, not stored. */
2138 /* Nonzero if we have seen a small data relocation referring to this
2140 unsigned char has_sda_refs : 1;
2142 /* Flag use of given relocations. */
2143 unsigned char has_addr16_ha : 1;
2144 unsigned char has_addr16_lo : 1;
2147 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2149 /* PPC ELF linker hash table. */
2151 struct ppc_elf_link_hash_table
2153 struct elf_link_hash_table elf;
2155 /* Various options passed from the linker. */
2156 struct ppc_elf_params *params;
2158 /* Short-cuts to get to dynamic linker sections. */
2162 elf_linker_section_t sdata[2];
2164 asection *glink_eh_frame;
2166 asection *relpltlocal;
2168 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2171 /* Shortcut to __tls_get_addr. */
2172 struct elf_link_hash_entry *tls_get_addr;
2174 /* The bfd that forced an old-style PLT. */
2177 /* TLS local dynamic got entry handling. */
2179 bfd_signed_vma refcount;
2183 /* Offset of branch table to PltResolve function in glink. */
2184 bfd_vma glink_pltresolve;
2186 /* Size of reserved GOT entries. */
2187 unsigned int got_header_size;
2188 /* Non-zero if allocating the header left a gap. */
2189 unsigned int got_gap;
2191 /* The type of PLT we have chosen to use. */
2192 enum ppc_elf_plt_type plt_type;
2194 /* True if the target system is VxWorks. */
2195 unsigned int is_vxworks:1;
2197 /* Whether there exist local gnu indirect function resolvers,
2198 referenced by dynamic relocations. */
2199 unsigned int local_ifunc_resolver:1;
2200 unsigned int maybe_local_ifunc_resolver:1;
2202 /* Set if tls optimization is enabled. */
2203 unsigned int do_tls_opt:1;
2205 /* Set if inline plt calls should be converted to direct calls. */
2206 unsigned int can_convert_all_inline_plt:1;
2208 /* The size of PLT entries. */
2210 /* The distance between adjacent PLT slots. */
2212 /* The size of the first PLT entry. */
2213 int plt_initial_entry_size;
2215 /* Small local sym cache. */
2216 struct sym_cache sym_cache;
2219 /* Rename some of the generic section flags to better document how they
2220 are used for ppc32. The flags are only valid for ppc32 elf objects. */
2222 /* Nonzero if this section has TLS related relocations. */
2223 #define has_tls_reloc sec_flg0
2225 /* Nonzero if this section has a call to __tls_get_addr. */
2226 #define has_tls_get_addr_call sec_flg1
2228 /* Flag set when PLTCALL relocs are detected. */
2229 #define has_pltcall sec_flg2
2231 /* Get the PPC ELF linker hash table from a link_info structure. */
2233 #define ppc_elf_hash_table(p) \
2234 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2235 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2237 /* Create an entry in a PPC ELF linker hash table. */
2239 static struct bfd_hash_entry *
2240 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2241 struct bfd_hash_table *table,
2244 /* Allocate the structure if it has not already been allocated by a
2248 entry = bfd_hash_allocate (table,
2249 sizeof (struct ppc_elf_link_hash_entry));
2254 /* Call the allocation method of the superclass. */
2255 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2258 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2259 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2260 ppc_elf_hash_entry (entry)->tls_mask = 0;
2261 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
2267 /* Create a PPC ELF linker hash table. */
2269 static struct bfd_link_hash_table *
2270 ppc_elf_link_hash_table_create (bfd *abfd)
2272 struct ppc_elf_link_hash_table *ret;
2273 static struct ppc_elf_params default_params
2274 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
2276 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2280 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2281 ppc_elf_link_hash_newfunc,
2282 sizeof (struct ppc_elf_link_hash_entry),
2289 ret->elf.init_plt_refcount.refcount = 0;
2290 ret->elf.init_plt_refcount.glist = NULL;
2291 ret->elf.init_plt_offset.offset = 0;
2292 ret->elf.init_plt_offset.glist = NULL;
2294 ret->params = &default_params;
2296 ret->sdata[0].name = ".sdata";
2297 ret->sdata[0].sym_name = "_SDA_BASE_";
2298 ret->sdata[0].bss_name = ".sbss";
2300 ret->sdata[1].name = ".sdata2";
2301 ret->sdata[1].sym_name = "_SDA2_BASE_";
2302 ret->sdata[1].bss_name = ".sbss2";
2304 ret->plt_entry_size = 12;
2305 ret->plt_slot_size = 8;
2306 ret->plt_initial_entry_size = 72;
2308 return &ret->elf.root;
2311 /* Hook linker params into hash table. */
2314 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
2316 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2319 htab->params = params;
2320 params->pagesize_p2 = bfd_log2 (params->pagesize);
2323 /* Create .got and the related sections. */
2326 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2328 struct ppc_elf_link_hash_table *htab;
2330 if (!_bfd_elf_create_got_section (abfd, info))
2333 htab = ppc_elf_hash_table (info);
2334 if (!htab->is_vxworks)
2336 /* The powerpc .got has a blrl instruction in it. Mark it
2338 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2339 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2340 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
2347 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
2348 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
2349 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
2352 ppc_elf_create_linker_section (bfd *abfd,
2353 struct bfd_link_info *info,
2355 elf_linker_section_t *lsect)
2359 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2360 | SEC_LINKER_CREATED);
2362 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
2367 /* Define the sym on the first section of this name. */
2368 s = bfd_get_section_by_name (abfd, lsect->name);
2370 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
2371 if (lsect->sym == NULL)
2373 lsect->sym->root.u.def.value = 0x8000;
2378 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2380 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2385 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2386 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2387 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2389 p2align = htab->params->ppc476_workaround ? 6 : 4;
2390 if (p2align < htab->params->plt_stub_align)
2391 p2align = htab->params->plt_stub_align;
2393 || !bfd_set_section_alignment (abfd, s, p2align))
2396 if (!info->no_ld_generated_unwind_info)
2398 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2399 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2400 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
2401 htab->glink_eh_frame = s;
2403 || !bfd_set_section_alignment (abfd, s, 2))
2407 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2408 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2411 || !bfd_set_section_alignment (abfd, s, 4))
2414 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2415 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2416 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
2417 htab->elf.irelplt = s;
2419 || ! bfd_set_section_alignment (abfd, s, 2))
2422 /* Local plt entries. */
2423 flags = (SEC_ALLOC | SEC_LOAD
2424 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2425 htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt",
2427 if (htab->pltlocal == NULL
2428 || ! bfd_set_section_alignment (abfd, htab->pltlocal, 2))
2431 if (bfd_link_pic (info))
2433 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
2434 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2436 = bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags);
2437 if (htab->relpltlocal == NULL
2438 || ! bfd_set_section_alignment (abfd, htab->relpltlocal, 2))
2442 if (!ppc_elf_create_linker_section (abfd, info, 0,
2446 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
2453 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2454 to output sections (just like _bfd_elf_create_dynamic_sections has
2455 to create .dynbss and .rela.bss). */
2458 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2460 struct ppc_elf_link_hash_table *htab;
2464 htab = ppc_elf_hash_table (info);
2466 if (htab->elf.sgot == NULL
2467 && !ppc_elf_create_got (abfd, info))
2470 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2473 if (htab->glink == NULL
2474 && !ppc_elf_create_glink (abfd, info))
2477 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
2478 SEC_ALLOC | SEC_LINKER_CREATED);
2483 if (! bfd_link_pic (info))
2485 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2486 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2487 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
2490 || ! bfd_set_section_alignment (abfd, s, 2))
2494 if (htab->is_vxworks
2495 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2499 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2500 if (htab->plt_type == PLT_VXWORKS)
2501 /* The VxWorks PLT is a loaded section with contents. */
2502 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2503 return bfd_set_section_flags (abfd, s, flags);
2506 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2509 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2510 struct elf_link_hash_entry *dir,
2511 struct elf_link_hash_entry *ind)
2513 struct ppc_elf_link_hash_entry *edir, *eind;
2515 edir = (struct ppc_elf_link_hash_entry *) dir;
2516 eind = (struct ppc_elf_link_hash_entry *) ind;
2518 edir->tls_mask |= eind->tls_mask;
2519 edir->has_sda_refs |= eind->has_sda_refs;
2521 if (edir->elf.versioned != versioned_hidden)
2522 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2523 edir->elf.ref_regular |= eind->elf.ref_regular;
2524 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2525 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2526 edir->elf.needs_plt |= eind->elf.needs_plt;
2527 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2529 /* If we were called to copy over info for a weak sym, that's all. */
2530 if (eind->elf.root.type != bfd_link_hash_indirect)
2533 if (eind->dyn_relocs != NULL)
2535 if (edir->dyn_relocs != NULL)
2537 struct elf_dyn_relocs **pp;
2538 struct elf_dyn_relocs *p;
2540 /* Add reloc counts against the indirect sym to the direct sym
2541 list. Merge any entries against the same section. */
2542 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2544 struct elf_dyn_relocs *q;
2546 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2547 if (q->sec == p->sec)
2549 q->pc_count += p->pc_count;
2550 q->count += p->count;
2557 *pp = edir->dyn_relocs;
2560 edir->dyn_relocs = eind->dyn_relocs;
2561 eind->dyn_relocs = NULL;
2564 /* Copy over the GOT refcount entries that we may have already seen to
2565 the symbol which just became indirect. */
2566 edir->elf.got.refcount += eind->elf.got.refcount;
2567 eind->elf.got.refcount = 0;
2569 /* And plt entries. */
2570 if (eind->elf.plt.plist != NULL)
2572 if (edir->elf.plt.plist != NULL)
2574 struct plt_entry **entp;
2575 struct plt_entry *ent;
2577 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2579 struct plt_entry *dent;
2581 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2582 if (dent->sec == ent->sec && dent->addend == ent->addend)
2584 dent->plt.refcount += ent->plt.refcount;
2591 *entp = edir->elf.plt.plist;
2594 edir->elf.plt.plist = eind->elf.plt.plist;
2595 eind->elf.plt.plist = NULL;
2598 if (eind->elf.dynindx != -1)
2600 if (edir->elf.dynindx != -1)
2601 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2602 edir->elf.dynstr_index);
2603 edir->elf.dynindx = eind->elf.dynindx;
2604 edir->elf.dynstr_index = eind->elf.dynstr_index;
2605 eind->elf.dynindx = -1;
2606 eind->elf.dynstr_index = 0;
2610 /* Hook called by the linker routine which adds symbols from an object
2611 file. We use it to put .comm items in .sbss, and not .bss. */
2614 ppc_elf_add_symbol_hook (bfd *abfd,
2615 struct bfd_link_info *info,
2616 Elf_Internal_Sym *sym,
2617 const char **namep ATTRIBUTE_UNUSED,
2618 flagword *flagsp ATTRIBUTE_UNUSED,
2622 if (sym->st_shndx == SHN_COMMON
2623 && !bfd_link_relocatable (info)
2624 && is_ppc_elf (info->output_bfd)
2625 && sym->st_size <= elf_gp_size (abfd))
2627 /* Common symbols less than or equal to -G nn bytes are automatically
2629 struct ppc_elf_link_hash_table *htab;
2631 htab = ppc_elf_hash_table (info);
2632 if (htab->sbss == NULL)
2634 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2636 if (!htab->elf.dynobj)
2637 htab->elf.dynobj = abfd;
2639 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2642 if (htab->sbss == NULL)
2647 *valp = sym->st_size;
2653 /* Find a linker generated pointer with a given addend and type. */
2655 static elf_linker_section_pointers_t *
2656 elf_find_pointer_linker_section
2657 (elf_linker_section_pointers_t *linker_pointers,
2659 elf_linker_section_t *lsect)
2661 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2662 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2663 return linker_pointers;
2668 /* Allocate a pointer to live in a linker created section. */
2671 elf_allocate_pointer_linker_section (bfd *abfd,
2672 elf_linker_section_t *lsect,
2673 struct elf_link_hash_entry *h,
2674 const Elf_Internal_Rela *rel)
2676 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2677 elf_linker_section_pointers_t *linker_section_ptr;
2678 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2681 BFD_ASSERT (lsect != NULL);
2683 /* Is this a global symbol? */
2686 struct ppc_elf_link_hash_entry *eh;
2688 /* Has this symbol already been allocated? If so, our work is done. */
2689 eh = (struct ppc_elf_link_hash_entry *) h;
2690 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2695 ptr_linker_section_ptr = &eh->linker_section_pointer;
2699 BFD_ASSERT (is_ppc_elf (abfd));
2701 /* Allocation of a pointer to a local symbol. */
2702 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2704 /* Allocate a table to hold the local symbols if first time. */
2707 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
2710 amt *= sizeof (elf_linker_section_pointers_t *);
2711 ptr = bfd_zalloc (abfd, amt);
2716 elf_local_ptr_offsets (abfd) = ptr;
2719 /* Has this symbol already been allocated? If so, our work is done. */
2720 if (elf_find_pointer_linker_section (ptr[r_symndx],
2725 ptr_linker_section_ptr = &ptr[r_symndx];
2728 /* Allocate space for a pointer in the linker section, and allocate
2729 a new pointer record from internal memory. */
2730 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2731 amt = sizeof (elf_linker_section_pointers_t);
2732 linker_section_ptr = bfd_alloc (abfd, amt);
2734 if (!linker_section_ptr)
2737 linker_section_ptr->next = *ptr_linker_section_ptr;
2738 linker_section_ptr->addend = rel->r_addend;
2739 linker_section_ptr->lsect = lsect;
2740 *ptr_linker_section_ptr = linker_section_ptr;
2742 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
2744 linker_section_ptr->offset = lsect->section->size;
2745 lsect->section->size += 4;
2749 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2750 lsect->name, (long) linker_section_ptr->offset,
2751 (long) lsect->section->size);
2757 static struct plt_entry **
2758 update_local_sym_info (bfd *abfd,
2759 Elf_Internal_Shdr *symtab_hdr,
2760 unsigned long r_symndx,
2763 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2764 struct plt_entry **local_plt;
2765 unsigned char *local_got_tls_masks;
2767 if (local_got_refcounts == NULL)
2769 bfd_size_type size = symtab_hdr->sh_info;
2771 size *= (sizeof (*local_got_refcounts)
2772 + sizeof (*local_plt)
2773 + sizeof (*local_got_tls_masks));
2774 local_got_refcounts = bfd_zalloc (abfd, size);
2775 if (local_got_refcounts == NULL)
2777 elf_local_got_refcounts (abfd) = local_got_refcounts;
2780 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
2781 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
2782 local_got_tls_masks[r_symndx] |= tls_type & 0xff;
2783 if ((tls_type & NON_GOT) == 0)
2784 local_got_refcounts[r_symndx] += 1;
2785 return local_plt + r_symndx;
2789 update_plt_info (bfd *abfd, struct plt_entry **plist,
2790 asection *sec, bfd_vma addend)
2792 struct plt_entry *ent;
2796 for (ent = *plist; ent != NULL; ent = ent->next)
2797 if (ent->sec == sec && ent->addend == addend)
2801 bfd_size_type amt = sizeof (*ent);
2802 ent = bfd_alloc (abfd, amt);
2807 ent->addend = addend;
2808 ent->plt.refcount = 0;
2811 ent->plt.refcount += 1;
2815 static struct plt_entry *
2816 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
2818 struct plt_entry *ent;
2822 for (ent = *plist; ent != NULL; ent = ent->next)
2823 if (ent->sec == sec && ent->addend == addend)
2829 is_branch_reloc (enum elf_ppc_reloc_type r_type)
2831 return (r_type == R_PPC_PLTREL24
2832 || r_type == R_PPC_LOCAL24PC
2833 || r_type == R_PPC_REL24
2834 || r_type == R_PPC_REL14
2835 || r_type == R_PPC_REL14_BRTAKEN
2836 || r_type == R_PPC_REL14_BRNTAKEN
2837 || r_type == R_PPC_ADDR24
2838 || r_type == R_PPC_ADDR14
2839 || r_type == R_PPC_ADDR14_BRTAKEN
2840 || r_type == R_PPC_ADDR14_BRNTAKEN
2841 || r_type == R_PPC_VLE_REL24);
2844 /* Relocs on inline plt call sequence insns prior to the call. */
2847 is_plt_seq_reloc (enum elf_ppc_reloc_type r_type)
2849 return (r_type == R_PPC_PLT16_HA
2850 || r_type == R_PPC_PLT16_HI
2851 || r_type == R_PPC_PLT16_LO
2852 || r_type == R_PPC_PLTSEQ);
2856 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2859 /* xgettext:c-format */
2860 (_("%pB: relocation %s cannot be used when making a shared object"),
2862 ppc_elf_howto_table[r_type]->name);
2863 bfd_set_error (bfd_error_bad_value);
2866 /* Look through the relocs for a section during the first phase, and
2867 allocate space in the global offset table or procedure linkage
2871 ppc_elf_check_relocs (bfd *abfd,
2872 struct bfd_link_info *info,
2874 const Elf_Internal_Rela *relocs)
2876 struct ppc_elf_link_hash_table *htab;
2877 Elf_Internal_Shdr *symtab_hdr;
2878 struct elf_link_hash_entry **sym_hashes;
2879 const Elf_Internal_Rela *rel;
2880 const Elf_Internal_Rela *rel_end;
2881 asection *got2, *sreloc;
2882 struct elf_link_hash_entry *tga;
2884 if (bfd_link_relocatable (info))
2887 /* Don't do anything special with non-loaded, non-alloced sections.
2888 In particular, any relocs in such sections should not affect GOT
2889 and PLT reference counting (ie. we don't allow them to create GOT
2890 or PLT entries), there's no possibility or desire to optimize TLS
2891 relocs, and there's not much point in propagating relocs to shared
2892 libs that the dynamic linker won't relocate. */
2893 if ((sec->flags & SEC_ALLOC) == 0)
2897 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
2901 BFD_ASSERT (is_ppc_elf (abfd));
2903 /* Initialize howto table if not already done. */
2904 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2905 ppc_elf_howto_init ();
2907 htab = ppc_elf_hash_table (info);
2908 if (htab->glink == NULL)
2910 if (htab->elf.dynobj == NULL)
2911 htab->elf.dynobj = abfd;
2912 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
2915 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
2916 FALSE, FALSE, TRUE);
2917 symtab_hdr = &elf_symtab_hdr (abfd);
2918 sym_hashes = elf_sym_hashes (abfd);
2919 got2 = bfd_get_section_by_name (abfd, ".got2");
2922 rel_end = relocs + sec->reloc_count;
2923 for (rel = relocs; rel < rel_end; rel++)
2925 unsigned long r_symndx;
2926 enum elf_ppc_reloc_type r_type;
2927 struct elf_link_hash_entry *h;
2929 struct plt_entry **ifunc;
2930 struct plt_entry **pltent;
2933 r_symndx = ELF32_R_SYM (rel->r_info);
2934 if (r_symndx < symtab_hdr->sh_info)
2938 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2939 while (h->root.type == bfd_link_hash_indirect
2940 || h->root.type == bfd_link_hash_warning)
2941 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2944 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2945 This shows up in particular in an R_PPC_ADDR32 in the eabi
2948 && htab->elf.sgot == NULL
2949 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2951 if (htab->elf.dynobj == NULL)
2952 htab->elf.dynobj = abfd;
2953 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2955 BFD_ASSERT (h == htab->elf.hgot);
2959 r_type = ELF32_R_TYPE (rel->r_info);
2961 if (h == NULL && !htab->is_vxworks)
2963 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2968 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2970 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
2971 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
2972 NON_GOT | PLT_IFUNC);
2976 /* STT_GNU_IFUNC symbols must have a PLT entry;
2977 In a non-pie executable even when there are
2979 if (!bfd_link_pic (info)
2980 || is_branch_reloc (r_type)
2981 || r_type == R_PPC_PLT16_LO
2982 || r_type == R_PPC_PLT16_HI
2983 || r_type == R_PPC_PLT16_HA)
2986 if (r_type == R_PPC_PLTREL24)
2987 ppc_elf_tdata (abfd)->makes_plt_call = 1;
2988 if (bfd_link_pic (info)
2989 && (r_type == R_PPC_PLTREL24
2990 || r_type == R_PPC_PLT16_LO
2991 || r_type == R_PPC_PLT16_HI
2992 || r_type == R_PPC_PLT16_HA))
2993 addend = rel->r_addend;
2994 if (!update_plt_info (abfd, ifunc, got2, addend))
3000 if (!htab->is_vxworks
3001 && is_branch_reloc (r_type)
3006 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3007 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3008 /* We have a new-style __tls_get_addr call with a marker
3012 /* Mark this section as having an old-style call. */
3013 sec->has_tls_get_addr_call = 1;
3020 /* These special tls relocs tie a call to __tls_get_addr with
3021 its parameter symbol. */
3023 ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
3025 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3026 NON_GOT | TLS_TLS | TLS_MARK))
3033 case R_PPC_GOT_TLSLD16:
3034 case R_PPC_GOT_TLSLD16_LO:
3035 case R_PPC_GOT_TLSLD16_HI:
3036 case R_PPC_GOT_TLSLD16_HA:
3037 tls_type = TLS_TLS | TLS_LD;
3040 case R_PPC_GOT_TLSGD16:
3041 case R_PPC_GOT_TLSGD16_LO:
3042 case R_PPC_GOT_TLSGD16_HI:
3043 case R_PPC_GOT_TLSGD16_HA:
3044 tls_type = TLS_TLS | TLS_GD;
3047 case R_PPC_GOT_TPREL16:
3048 case R_PPC_GOT_TPREL16_LO:
3049 case R_PPC_GOT_TPREL16_HI:
3050 case R_PPC_GOT_TPREL16_HA:
3051 if (bfd_link_dll (info))
3052 info->flags |= DF_STATIC_TLS;
3053 tls_type = TLS_TLS | TLS_TPREL;
3056 case R_PPC_GOT_DTPREL16:
3057 case R_PPC_GOT_DTPREL16_LO:
3058 case R_PPC_GOT_DTPREL16_HI:
3059 case R_PPC_GOT_DTPREL16_HA:
3060 tls_type = TLS_TLS | TLS_DTPREL;
3062 sec->has_tls_reloc = 1;
3065 /* GOT16 relocations */
3067 case R_PPC_GOT16_LO:
3068 case R_PPC_GOT16_HI:
3069 case R_PPC_GOT16_HA:
3070 /* This symbol requires a global offset table entry. */
3071 if (htab->elf.sgot == NULL)
3073 if (htab->elf.dynobj == NULL)
3074 htab->elf.dynobj = abfd;
3075 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3080 h->got.refcount += 1;
3081 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3084 /* This is a global offset table entry for a local symbol. */
3085 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3088 /* We may also need a plt entry if the symbol turns out to be
3090 if (h != NULL && !bfd_link_pic (info))
3092 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3097 /* Indirect .sdata relocation. */
3098 case R_PPC_EMB_SDAI16:
3099 if (bfd_link_pic (info))
3101 bad_shared_reloc (abfd, r_type);
3104 htab->sdata[0].sym->ref_regular = 1;
3105 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
3110 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3111 h->non_got_ref = TRUE;
3115 /* Indirect .sdata2 relocation. */
3116 case R_PPC_EMB_SDA2I16:
3117 if (bfd_link_pic (info))
3119 bad_shared_reloc (abfd, r_type);
3122 htab->sdata[1].sym->ref_regular = 1;
3123 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
3128 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3129 h->non_got_ref = TRUE;
3133 case R_PPC_SDAREL16:
3134 htab->sdata[0].sym->ref_regular = 1;
3137 case R_PPC_VLE_SDAREL_LO16A:
3138 case R_PPC_VLE_SDAREL_LO16D:
3139 case R_PPC_VLE_SDAREL_HI16A:
3140 case R_PPC_VLE_SDAREL_HI16D:
3141 case R_PPC_VLE_SDAREL_HA16A:
3142 case R_PPC_VLE_SDAREL_HA16D:
3145 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3146 h->non_got_ref = TRUE;
3150 case R_PPC_VLE_REL8:
3151 case R_PPC_VLE_REL15:
3152 case R_PPC_VLE_REL24:
3153 case R_PPC_VLE_LO16A:
3154 case R_PPC_VLE_LO16D:
3155 case R_PPC_VLE_HI16A:
3156 case R_PPC_VLE_HI16D:
3157 case R_PPC_VLE_HA16A:
3158 case R_PPC_VLE_HA16D:
3159 case R_PPC_VLE_ADDR20:
3162 case R_PPC_EMB_SDA2REL:
3163 if (bfd_link_pic (info))
3165 bad_shared_reloc (abfd, r_type);
3168 htab->sdata[1].sym->ref_regular = 1;
3171 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3172 h->non_got_ref = TRUE;
3176 case R_PPC_VLE_SDA21_LO:
3177 case R_PPC_VLE_SDA21:
3178 case R_PPC_EMB_SDA21:
3179 case R_PPC_EMB_RELSDA:
3180 if (bfd_link_pic (info))
3182 bad_shared_reloc (abfd, r_type);
3187 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3188 h->non_got_ref = TRUE;
3192 case R_PPC_EMB_NADDR32:
3193 case R_PPC_EMB_NADDR16:
3194 case R_PPC_EMB_NADDR16_LO:
3195 case R_PPC_EMB_NADDR16_HI:
3196 case R_PPC_EMB_NADDR16_HA:
3197 if (bfd_link_pic (info))
3199 bad_shared_reloc (abfd, r_type);
3203 h->non_got_ref = TRUE;
3206 case R_PPC_PLTREL24:
3209 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3213 sec->has_pltcall = 1;
3217 case R_PPC_PLTREL32:
3218 case R_PPC_PLT16_LO:
3219 case R_PPC_PLT16_HI:
3220 case R_PPC_PLT16_HA:
3223 fprintf (stderr, "Reloc requires a PLT entry\n");
3225 /* This symbol requires a procedure linkage table entry. */
3228 pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3229 NON_GOT | PLT_KEEP);
3235 if (r_type != R_PPC_PLTREL24)
3236 ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP;
3238 pltent = &h->plt.plist;
3241 if (bfd_link_pic (info)
3242 && (r_type == R_PPC_PLTREL24
3243 || r_type == R_PPC_PLT16_LO
3244 || r_type == R_PPC_PLT16_HI
3245 || r_type == R_PPC_PLT16_HA))
3246 addend = rel->r_addend;
3247 if (!update_plt_info (abfd, pltent, got2, addend))
3251 /* The following relocations don't need to propagate the
3252 relocation if linking a shared object since they are
3253 section relative. */
3255 case R_PPC_SECTOFF_LO:
3256 case R_PPC_SECTOFF_HI:
3257 case R_PPC_SECTOFF_HA:
3258 case R_PPC_DTPREL16:
3259 case R_PPC_DTPREL16_LO:
3260 case R_PPC_DTPREL16_HI:
3261 case R_PPC_DTPREL16_HA:
3266 case R_PPC_REL16_LO:
3267 case R_PPC_REL16_HI:
3268 case R_PPC_REL16_HA:
3269 case R_PPC_REL16DX_HA:
3270 ppc_elf_tdata (abfd)->has_rel16 = 1;
3273 /* These are just markers. */
3275 case R_PPC_EMB_MRKREF:
3279 case R_PPC_RELAX_PLT:
3280 case R_PPC_RELAX_PLTREL24:
3284 /* These should only appear in dynamic objects. */
3286 case R_PPC_GLOB_DAT:
3287 case R_PPC_JMP_SLOT:
3288 case R_PPC_RELATIVE:
3289 case R_PPC_IRELATIVE:
3292 /* These aren't handled yet. We'll report an error later. */
3294 case R_PPC_EMB_RELSEC16:
3295 case R_PPC_EMB_RELST_LO:
3296 case R_PPC_EMB_RELST_HI:
3297 case R_PPC_EMB_RELST_HA:
3298 case R_PPC_EMB_BIT_FLD:
3301 /* This refers only to functions defined in the shared library. */
3302 case R_PPC_LOCAL24PC:
3303 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3305 htab->plt_type = PLT_OLD;
3306 htab->old_bfd = abfd;
3308 if (h != NULL && h->type == STT_GNU_IFUNC)
3311 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3316 /* This relocation describes the C++ object vtable hierarchy.
3317 Reconstruct it for later use during GC. */
3318 case R_PPC_GNU_VTINHERIT:
3319 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3323 /* This relocation describes which C++ vtable entries are actually
3324 used. Record for later use during GC. */
3325 case R_PPC_GNU_VTENTRY:
3326 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3330 /* We shouldn't really be seeing TPREL32. */
3333 case R_PPC_TPREL16_LO:
3334 case R_PPC_TPREL16_HI:
3335 case R_PPC_TPREL16_HA:
3336 if (bfd_link_dll (info))
3337 info->flags |= DF_STATIC_TLS;
3341 case R_PPC_DTPMOD32:
3342 case R_PPC_DTPREL32:
3348 && (sec->flags & SEC_CODE) != 0
3349 && bfd_link_pic (info)
3350 && htab->plt_type == PLT_UNSET)
3352 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3353 the start of a function, which assembles to a REL32
3354 reference to .got2. If we detect one of these, then
3355 force the old PLT layout because the linker cannot
3356 reliably deduce the GOT pointer value needed for
3359 Elf_Internal_Sym *isym;
3361 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3366 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3369 htab->plt_type = PLT_OLD;
3370 htab->old_bfd = abfd;
3373 if (h == NULL || h == htab->elf.hgot)
3379 case R_PPC_ADDR16_LO:
3380 case R_PPC_ADDR16_HI:
3381 case R_PPC_ADDR16_HA:
3384 if (h != NULL && !bfd_link_pic (info))
3386 /* We may need a plt entry if the symbol turns out to be
3387 a function defined in a dynamic object. */
3388 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3391 /* We may need a copy reloc too. */
3393 h->pointer_equality_needed = 1;
3394 if (r_type == R_PPC_ADDR16_HA)
3395 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
3396 if (r_type == R_PPC_ADDR16_LO)
3397 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
3403 case R_PPC_REL14_BRTAKEN:
3404 case R_PPC_REL14_BRNTAKEN:
3407 if (h == htab->elf.hgot)
3409 if (htab->plt_type == PLT_UNSET)
3411 htab->plt_type = PLT_OLD;
3412 htab->old_bfd = abfd;
3420 case R_PPC_ADDR14_BRTAKEN:
3421 case R_PPC_ADDR14_BRNTAKEN:
3422 if (h != NULL && !bfd_link_pic (info))
3424 /* We may need a plt entry if the symbol turns out to be
3425 a function defined in a dynamic object. */
3427 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3433 /* If we are creating a shared library, and this is a reloc
3434 against a global symbol, or a non PC relative reloc
3435 against a local symbol, then we need to copy the reloc
3436 into the shared library. However, if we are linking with
3437 -Bsymbolic, we do not need to copy a reloc against a
3438 global symbol which is defined in an object we are
3439 including in the link (i.e., DEF_REGULAR is set). At
3440 this point we have not seen all the input files, so it is
3441 possible that DEF_REGULAR is not set now but will be set
3442 later (it is never cleared). In case of a weak definition,
3443 DEF_REGULAR may be cleared later by a strong definition in
3444 a shared library. We account for that possibility below by
3445 storing information in the dyn_relocs field of the hash
3446 table entry. A similar situation occurs when creating
3447 shared libraries and symbol visibility changes render the
3450 If on the other hand, we are creating an executable, we
3451 may need to keep relocations for symbols satisfied by a
3452 dynamic library if we manage to avoid copy relocs for the
3454 if ((bfd_link_pic (info)
3455 && (must_be_dyn_reloc (info, r_type)
3457 && (!SYMBOLIC_BIND (info, h)
3458 || h->root.type == bfd_link_hash_defweak
3459 || !h->def_regular))))
3460 || (ELIMINATE_COPY_RELOCS
3461 && !bfd_link_pic (info)
3463 && (h->root.type == bfd_link_hash_defweak
3464 || !h->def_regular)))
3468 "ppc_elf_check_relocs needs to "
3469 "create relocation for %s\n",
3470 (h && h->root.root.string
3471 ? h->root.root.string : "<unknown>"));
3475 if (htab->elf.dynobj == NULL)
3476 htab->elf.dynobj = abfd;
3478 sreloc = _bfd_elf_make_dynamic_reloc_section
3479 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3485 /* If this is a global symbol, we count the number of
3486 relocations we need for this symbol. */
3489 struct elf_dyn_relocs *p;
3490 struct elf_dyn_relocs **rel_head;
3492 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3494 if (p == NULL || p->sec != sec)
3496 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3499 p->next = *rel_head;
3506 if (!must_be_dyn_reloc (info, r_type))
3511 /* Track dynamic relocs needed for local syms too.
3512 We really need local syms available to do this
3514 struct ppc_dyn_relocs *p;
3515 struct ppc_dyn_relocs **rel_head;
3516 bfd_boolean is_ifunc;
3519 Elf_Internal_Sym *isym;
3521 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3526 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3530 vpp = &elf_section_data (s)->local_dynrel;
3531 rel_head = (struct ppc_dyn_relocs **) vpp;
3532 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
3534 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
3536 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
3538 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3541 p->next = *rel_head;
3544 p->ifunc = is_ifunc;
3558 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
3559 and OBFD, and merge non-conflicting ones. */
3561 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
3563 bfd *obfd = info->output_bfd;
3564 obj_attribute *in_attr, *in_attrs;
3565 obj_attribute *out_attr, *out_attrs;
3566 bfd_boolean ret = TRUE;
3568 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3569 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3571 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3572 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3574 if (in_attr->i != out_attr->i)
3576 int in_fp = in_attr->i & 3;
3577 int out_fp = out_attr->i & 3;
3578 static bfd *last_fp, *last_ld;
3582 else if (out_fp == 0)
3584 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3585 out_attr->i ^= in_fp;
3588 else if (out_fp != 2 && in_fp == 2)
3591 /* xgettext:c-format */
3592 (_("%pB uses hard float, %pB uses soft float"),
3596 else if (out_fp == 2 && in_fp != 2)
3599 /* xgettext:c-format */
3600 (_("%pB uses hard float, %pB uses soft float"),
3604 else if (out_fp == 1 && in_fp == 3)
3607 /* xgettext:c-format */
3608 (_("%pB uses double-precision hard float, "
3609 "%pB uses single-precision hard float"), last_fp, ibfd);
3612 else if (out_fp == 3 && in_fp == 1)
3615 /* xgettext:c-format */
3616 (_("%pB uses double-precision hard float, "
3617 "%pB uses single-precision hard float"), ibfd, last_fp);
3621 in_fp = in_attr->i & 0xc;
3622 out_fp = out_attr->i & 0xc;
3625 else if (out_fp == 0)
3627 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3628 out_attr->i ^= in_fp;
3631 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
3634 /* xgettext:c-format */
3635 (_("%pB uses 64-bit long double, "
3636 "%pB uses 128-bit long double"), ibfd, last_ld);
3639 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
3642 /* xgettext:c-format */
3643 (_("%pB uses 64-bit long double, "
3644 "%pB uses 128-bit long double"), last_ld, ibfd);
3647 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
3650 /* xgettext:c-format */
3651 (_("%pB uses IBM long double, "
3652 "%pB uses IEEE long double"), last_ld, ibfd);
3655 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
3658 /* xgettext:c-format */
3659 (_("%pB uses IBM long double, "
3660 "%pB uses IEEE long double"), ibfd, last_ld);
3667 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3668 bfd_set_error (bfd_error_bad_value);
3673 /* Merge object attributes from IBFD into OBFD. Warn if
3674 there are conflicting attributes. */
3676 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
3679 obj_attribute *in_attr, *in_attrs;
3680 obj_attribute *out_attr, *out_attrs;
3683 if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info))
3686 obfd = info->output_bfd;
3687 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3688 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3690 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3691 merge non-conflicting ones. */
3692 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3693 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3695 if (in_attr->i != out_attr->i)
3697 int in_vec = in_attr->i & 3;
3698 int out_vec = out_attr->i & 3;
3699 static bfd *last_vec;
3703 else if (out_vec == 0)
3705 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3706 out_attr->i = in_vec;
3709 /* For now, allow generic to transition to AltiVec or SPE
3710 without a warning. If GCC marked files with their stack
3711 alignment and used don't-care markings for files which are
3712 not affected by the vector ABI, we could warn about this
3714 else if (in_vec == 1)
3716 else if (out_vec == 1)
3718 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3719 out_attr->i = in_vec;
3722 else if (out_vec < in_vec)
3725 /* xgettext:c-format */
3726 (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
3728 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3731 else if (out_vec > in_vec)
3734 /* xgettext:c-format */
3735 (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
3737 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3742 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
3743 and merge non-conflicting ones. */
3744 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
3745 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
3746 if (in_attr->i != out_attr->i)
3748 int in_struct = in_attr->i & 3;
3749 int out_struct = out_attr->i & 3;
3750 static bfd *last_struct;
3752 if (in_struct == 0 || in_struct == 3)
3754 else if (out_struct == 0)
3756 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3757 out_attr->i = in_struct;
3760 else if (out_struct < in_struct)
3763 /* xgettext:c-format */
3764 (_("%pB uses r3/r4 for small structure returns, "
3765 "%pB uses memory"), last_struct, ibfd);
3766 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3769 else if (out_struct > in_struct)
3772 /* xgettext:c-format */
3773 (_("%pB uses r3/r4 for small structure returns, "
3774 "%pB uses memory"), ibfd, last_struct);
3775 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3781 bfd_set_error (bfd_error_bad_value);
3785 /* Merge Tag_compatibility attributes and any common GNU ones. */
3786 return _bfd_elf_merge_object_attributes (ibfd, info);
3789 /* Merge backend specific data from an object file to the output
3790 object file when linking. */
3793 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3795 bfd *obfd = info->output_bfd;
3800 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
3803 /* Check if we have the same endianness. */
3804 if (! _bfd_generic_verify_endian_match (ibfd, info))
3807 if (!ppc_elf_merge_obj_attributes (ibfd, info))
3810 new_flags = elf_elfheader (ibfd)->e_flags;
3811 old_flags = elf_elfheader (obfd)->e_flags;
3812 if (!elf_flags_init (obfd))
3814 /* First call, no flags set. */
3815 elf_flags_init (obfd) = TRUE;
3816 elf_elfheader (obfd)->e_flags = new_flags;
3819 /* Compatible flags are ok. */
3820 else if (new_flags == old_flags)
3823 /* Incompatible flags. */
3826 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3827 to be linked with either. */
3829 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3830 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3834 (_("%pB: compiled with -mrelocatable and linked with "
3835 "modules compiled normally"), ibfd);
3837 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3838 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3842 (_("%pB: compiled normally and linked with "
3843 "modules compiled with -mrelocatable"), ibfd);
3846 /* The output is -mrelocatable-lib iff both the input files are. */
3847 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3848 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3850 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3851 but each input file is either -mrelocatable or -mrelocatable-lib. */
3852 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3853 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3854 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3855 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3857 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3858 any module uses it. */
3859 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3861 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3862 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3864 /* Warn about any other mismatches. */
3865 if (new_flags != old_flags)
3869 /* xgettext:c-format */
3870 (_("%pB: uses different e_flags (%#x) fields "
3871 "than previous modules (%#x)"),
3872 ibfd, new_flags, old_flags);
3877 bfd_set_error (bfd_error_bad_value);
3886 ppc_elf_vle_split16 (bfd *input_bfd,
3887 asection *input_section,
3888 unsigned long offset,
3891 split16_format_type split16_format,
3894 unsigned int insn, opcode;
3896 insn = bfd_get_32 (input_bfd, loc);
3897 opcode = insn & E_OPCODE_MASK;
3898 if (opcode == E_OR2I_INSN
3899 || opcode == E_AND2I_DOT_INSN
3900 || opcode == E_OR2IS_INSN
3901 || opcode == E_LIS_INSN
3902 || opcode == E_AND2IS_DOT_INSN)
3904 if (split16_format != split16a_type)
3907 split16_format = split16a_type;
3910 /* xgettext:c-format */
3911 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
3912 input_bfd, input_section, offset, opcode);
3915 else if (opcode == E_ADD2I_DOT_INSN
3916 || opcode == E_ADD2IS_INSN
3917 || opcode == E_CMP16I_INSN
3918 || opcode == E_MULL2I_INSN
3919 || opcode == E_CMPL16I_INSN
3920 || opcode == E_CMPH16I_INSN
3921 || opcode == E_CMPHL16I_INSN)
3923 if (split16_format != split16d_type)
3926 split16_format = split16d_type;
3929 /* xgettext:c-format */
3930 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
3931 input_bfd, input_section, offset, opcode);
3934 if (split16_format == split16a_type)
3936 insn &= ~((0xf800 << 5) | 0x7ff);
3937 insn |= (value & 0xf800) << 5;
3938 if ((insn & E_LI_MASK) == E_LI_INSN)
3940 /* Hack for e_li. Extend sign. */
3941 insn &= ~(0xf0000 >> 5);
3942 insn |= (-(value & 0x8000) & 0xf0000) >> 5;
3947 insn &= ~((0xf800 << 10) | 0x7ff);
3948 insn |= (value & 0xf800) << 10;
3950 insn |= value & 0x7ff;
3951 bfd_put_32 (input_bfd, insn, loc);
3955 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
3959 insn = bfd_get_32 (output_bfd, loc);
3960 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
3961 /* Top 4 bits of value to 17..20. */
3962 insn |= (value & 0xf0000) >> 5;
3963 /* Next 5 bits of the value to 11..15. */
3964 insn |= (value & 0xf800) << 5;
3965 /* And the final 11 bits of the value to bits 21 to 31. */
3966 insn |= value & 0x7ff;
3967 bfd_put_32 (output_bfd, insn, loc);
3971 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3972 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3974 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3975 struct bfd_link_info *info)
3977 struct ppc_elf_link_hash_table *htab;
3980 htab = ppc_elf_hash_table (info);
3982 if (htab->plt_type == PLT_UNSET)
3984 struct elf_link_hash_entry *h;
3986 if (htab->params->plt_style == PLT_OLD)
3987 htab->plt_type = PLT_OLD;
3988 else if (bfd_link_pic (info)
3989 && htab->elf.dynamic_sections_created
3990 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
3991 FALSE, FALSE, TRUE)) != NULL
3992 && (h->type == STT_FUNC
3995 && !(SYMBOL_CALLS_LOCAL (info, h)
3996 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
3998 /* Profiling of shared libs (and pies) is not supported with
3999 secure plt, because ppc32 does profiling before a
4000 function prologue and a secure plt pic call stubs needs
4001 r30 to be set up. */
4002 htab->plt_type = PLT_OLD;
4007 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4009 /* Look through the reloc flags left by ppc_elf_check_relocs.
4010 Use the old style bss plt if a file makes plt calls
4011 without using the new relocs, and if ld isn't given
4012 --secure-plt and we never see REL16 relocs. */
4013 if (plt_type == PLT_UNSET)
4015 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4016 if (is_ppc_elf (ibfd))
4018 if (ppc_elf_tdata (ibfd)->has_rel16)
4020 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4023 htab->old_bfd = ibfd;
4027 htab->plt_type = plt_type;
4030 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4032 if (htab->old_bfd != NULL)
4033 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
4035 _bfd_error_handler (_("bss-plt forced by profiling"));
4038 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4040 if (htab->plt_type == PLT_NEW)
4042 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4043 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4045 /* The new PLT is a loaded section. */
4046 if (htab->elf.splt != NULL
4047 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
4050 /* The new GOT is not executable. */
4051 if (htab->elf.sgot != NULL
4052 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
4057 /* Stop an unused .glink section from affecting .text alignment. */
4058 if (htab->glink != NULL
4059 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4062 return htab->plt_type == PLT_NEW;
4065 /* Return the section that should be marked against GC for a given
4069 ppc_elf_gc_mark_hook (asection *sec,
4070 struct bfd_link_info *info,
4071 Elf_Internal_Rela *rel,
4072 struct elf_link_hash_entry *h,
4073 Elf_Internal_Sym *sym)
4076 switch (ELF32_R_TYPE (rel->r_info))
4078 case R_PPC_GNU_VTINHERIT:
4079 case R_PPC_GNU_VTENTRY:
4083 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4087 get_sym_h (struct elf_link_hash_entry **hp,
4088 Elf_Internal_Sym **symp,
4090 unsigned char **tls_maskp,
4091 Elf_Internal_Sym **locsymsp,
4092 unsigned long r_symndx,
4095 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4097 if (r_symndx >= symtab_hdr->sh_info)
4099 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4100 struct elf_link_hash_entry *h;
4102 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4103 while (h->root.type == bfd_link_hash_indirect
4104 || h->root.type == bfd_link_hash_warning)
4105 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4113 if (symsecp != NULL)
4115 asection *symsec = NULL;
4116 if (h->root.type == bfd_link_hash_defined
4117 || h->root.type == bfd_link_hash_defweak)
4118 symsec = h->root.u.def.section;
4122 if (tls_maskp != NULL)
4123 *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask;
4127 Elf_Internal_Sym *sym;
4128 Elf_Internal_Sym *locsyms = *locsymsp;
4130 if (locsyms == NULL)
4132 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4133 if (locsyms == NULL)
4134 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4135 symtab_hdr->sh_info,
4136 0, NULL, NULL, NULL);
4137 if (locsyms == NULL)
4139 *locsymsp = locsyms;
4141 sym = locsyms + r_symndx;
4149 if (symsecp != NULL)
4150 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4152 if (tls_maskp != NULL)
4154 bfd_signed_vma *local_got;
4155 unsigned char *tls_mask;
4158 local_got = elf_local_got_refcounts (ibfd);
4159 if (local_got != NULL)
4161 struct plt_entry **local_plt = (struct plt_entry **)
4162 (local_got + symtab_hdr->sh_info);
4163 unsigned char *lgot_masks = (unsigned char *)
4164 (local_plt + symtab_hdr->sh_info);
4165 tls_mask = &lgot_masks[r_symndx];
4167 *tls_maskp = tls_mask;
4173 /* Analyze inline PLT call relocations to see whether calls to locally
4174 defined functions can be converted to direct calls. */
4177 ppc_elf_inline_plt (struct bfd_link_info *info)
4179 struct ppc_elf_link_hash_table *htab;
4182 bfd_vma low_vma, high_vma, limit;
4184 htab = ppc_elf_hash_table (info);
4188 /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is
4189 reduced somewhat to cater for possible stubs that might be added
4190 between the call and its destination. */
4194 for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next)
4195 if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE))
4197 if (low_vma > sec->vma)
4199 if (high_vma < sec->vma + sec->size)
4200 high_vma = sec->vma + sec->size;
4203 /* If a "bl" can reach anywhere in local code sections, then we can
4204 convert all inline PLT sequences to direct calls when the symbol
4206 if (high_vma - low_vma < limit)
4208 htab->can_convert_all_inline_plt = 1;
4212 /* Otherwise, go looking through relocs for cases where a direct
4213 call won't reach. Mark the symbol on any such reloc to disable
4214 the optimization and keep the PLT entry as it seems likely that
4215 this will be better than creating trampolines. Note that this
4216 will disable the optimization for all inline PLT calls to a
4217 particular symbol, not just those that won't reach. The
4218 difficulty in doing a more precise optimization is that the
4219 linker needs to make a decision depending on whether a
4220 particular R_PPC_PLTCALL insn can be turned into a direct
4221 call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in
4222 the sequence, and there is nothing that ties those relocs
4223 together except their symbol. */
4225 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4227 Elf_Internal_Shdr *symtab_hdr;
4228 Elf_Internal_Sym *local_syms;
4230 if (!is_ppc_elf (ibfd))
4234 symtab_hdr = &elf_symtab_hdr (ibfd);
4236 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4237 if (sec->has_pltcall
4238 && !bfd_is_abs_section (sec->output_section))
4240 Elf_Internal_Rela *relstart, *rel, *relend;
4242 /* Read the relocations. */
4243 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4245 if (relstart == NULL)
4248 relend = relstart + sec->reloc_count;
4249 for (rel = relstart; rel < relend; )
4251 enum elf_ppc_reloc_type r_type;
4252 unsigned long r_symndx;
4254 struct elf_link_hash_entry *h;
4255 Elf_Internal_Sym *sym;
4256 unsigned char *tls_maskp;
4258 r_type = ELF32_R_TYPE (rel->r_info);
4259 if (r_type != R_PPC_PLTCALL)
4262 r_symndx = ELF32_R_SYM (rel->r_info);
4263 if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms,
4266 if (elf_section_data (sec)->relocs != relstart)
4268 if (local_syms != NULL
4269 && symtab_hdr->contents != (unsigned char *) local_syms)
4274 if (sym_sec != NULL && sym_sec->output_section != NULL)
4278 to = h->root.u.def.value;
4281 to += (rel->r_addend
4282 + sym_sec->output_offset
4283 + sym_sec->output_section->vma);
4284 from = (rel->r_offset
4285 + sec->output_offset
4286 + sec->output_section->vma);
4287 if (to - from + limit < 2 * limit)
4288 *tls_maskp &= ~PLT_KEEP;
4291 if (elf_section_data (sec)->relocs != relstart)
4295 if (local_syms != NULL
4296 && symtab_hdr->contents != (unsigned char *) local_syms)
4298 if (!info->keep_memory)
4301 symtab_hdr->contents = (unsigned char *) local_syms;
4308 /* Set plt output section type, htab->tls_get_addr, and call the
4309 generic ELF tls_setup function. */
4312 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4314 struct ppc_elf_link_hash_table *htab;
4316 htab = ppc_elf_hash_table (info);
4317 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4318 FALSE, FALSE, TRUE);
4319 if (htab->plt_type != PLT_NEW)
4320 htab->params->no_tls_get_addr_opt = TRUE;
4322 if (!htab->params->no_tls_get_addr_opt)
4324 struct elf_link_hash_entry *opt, *tga;
4325 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4326 FALSE, FALSE, TRUE);
4328 && (opt->root.type == bfd_link_hash_defined
4329 || opt->root.type == bfd_link_hash_defweak))
4331 /* If glibc supports an optimized __tls_get_addr call stub,
4332 signalled by the presence of __tls_get_addr_opt, and we'll
4333 be calling __tls_get_addr via a plt call stub, then
4334 make __tls_get_addr point to __tls_get_addr_opt. */
4335 tga = htab->tls_get_addr;
4336 if (htab->elf.dynamic_sections_created
4338 && (tga->type == STT_FUNC
4340 && !(SYMBOL_CALLS_LOCAL (info, tga)
4341 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
4343 struct plt_entry *ent;
4344 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4345 if (ent->plt.refcount > 0)
4349 tga->root.type = bfd_link_hash_indirect;
4350 tga->root.u.i.link = &opt->root;
4351 ppc_elf_copy_indirect_symbol (info, opt, tga);
4353 if (opt->dynindx != -1)
4355 /* Use __tls_get_addr_opt in dynamic relocations. */
4357 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4359 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4362 htab->tls_get_addr = opt;
4367 htab->params->no_tls_get_addr_opt = TRUE;
4369 if (htab->plt_type == PLT_NEW
4370 && htab->elf.splt != NULL
4371 && htab->elf.splt->output_section != NULL)
4373 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
4374 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
4377 return _bfd_elf_tls_setup (obfd, info);
4380 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4384 branch_reloc_hash_match (const bfd *ibfd,
4385 const Elf_Internal_Rela *rel,
4386 const struct elf_link_hash_entry *hash)
4388 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4389 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4390 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4392 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4394 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4395 struct elf_link_hash_entry *h;
4397 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4398 while (h->root.type == bfd_link_hash_indirect
4399 || h->root.type == bfd_link_hash_warning)
4400 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4407 /* Run through all the TLS relocs looking for optimization
4411 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4412 struct bfd_link_info *info)
4416 struct ppc_elf_link_hash_table *htab;
4419 if (!bfd_link_executable (info))
4422 htab = ppc_elf_hash_table (info);
4426 /* Make two passes through the relocs. First time check that tls
4427 relocs involved in setting up a tls_get_addr call are indeed
4428 followed by such a call. If they are not, don't do any tls
4429 optimization. On the second pass twiddle tls_mask flags to
4430 notify relocate_section that optimization can be done, and
4431 adjust got and plt refcounts. */
4432 for (pass = 0; pass < 2; ++pass)
4433 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4435 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4436 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4438 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4439 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4441 Elf_Internal_Rela *relstart, *rel, *relend;
4442 int expecting_tls_get_addr = 0;
4444 /* Read the relocations. */
4445 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4447 if (relstart == NULL)
4450 relend = relstart + sec->reloc_count;
4451 for (rel = relstart; rel < relend; rel++)
4453 enum elf_ppc_reloc_type r_type;
4454 unsigned long r_symndx;
4455 struct elf_link_hash_entry *h = NULL;
4456 unsigned char *tls_mask;
4457 unsigned char tls_set, tls_clear;
4458 bfd_boolean is_local;
4459 bfd_signed_vma *got_count;
4461 r_symndx = ELF32_R_SYM (rel->r_info);
4462 if (r_symndx >= symtab_hdr->sh_info)
4464 struct elf_link_hash_entry **sym_hashes;
4466 sym_hashes = elf_sym_hashes (ibfd);
4467 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4468 while (h->root.type == bfd_link_hash_indirect
4469 || h->root.type == bfd_link_hash_warning)
4470 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4478 r_type = ELF32_R_TYPE (rel->r_info);
4479 /* If this section has old-style __tls_get_addr calls
4480 without marker relocs, then check that each
4481 __tls_get_addr call reloc is preceded by a reloc
4482 that conceivably belongs to the __tls_get_addr arg
4483 setup insn. If we don't find matching arg setup
4484 relocs, don't do any tls optimization. */
4486 && sec->has_tls_get_addr_call
4488 && h == htab->tls_get_addr
4489 && !expecting_tls_get_addr
4490 && is_branch_reloc (r_type))
4492 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
4493 "TLS optimization disabled\n",
4494 ibfd, sec, rel->r_offset);
4495 if (elf_section_data (sec)->relocs != relstart)
4500 expecting_tls_get_addr = 0;
4503 case R_PPC_GOT_TLSLD16:
4504 case R_PPC_GOT_TLSLD16_LO:
4505 expecting_tls_get_addr = 1;
4508 case R_PPC_GOT_TLSLD16_HI:
4509 case R_PPC_GOT_TLSLD16_HA:
4510 /* These relocs should never be against a symbol
4511 defined in a shared lib. Leave them alone if
4512 that turns out to be the case. */
4521 case R_PPC_GOT_TLSGD16:
4522 case R_PPC_GOT_TLSGD16_LO:
4523 expecting_tls_get_addr = 1;
4526 case R_PPC_GOT_TLSGD16_HI:
4527 case R_PPC_GOT_TLSGD16_HA:
4533 tls_set = TLS_TLS | TLS_GDIE;
4537 case R_PPC_GOT_TPREL16:
4538 case R_PPC_GOT_TPREL16_LO:
4539 case R_PPC_GOT_TPREL16_HI:
4540 case R_PPC_GOT_TPREL16_HA:
4545 tls_clear = TLS_TPREL;
4553 if (rel + 1 < relend
4554 && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
4557 && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ)
4559 r_type = ELF32_R_TYPE (rel[1].r_info);
4560 r_symndx = ELF32_R_SYM (rel[1].r_info);
4561 if (r_symndx >= symtab_hdr->sh_info)
4563 struct elf_link_hash_entry **sym_hashes;
4565 sym_hashes = elf_sym_hashes (ibfd);
4566 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4567 while (h->root.type == bfd_link_hash_indirect
4568 || h->root.type == bfd_link_hash_warning)
4569 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4572 struct plt_entry *ent = NULL;
4575 if (bfd_link_pic (info))
4576 addend = rel->r_addend;
4577 ent = find_plt_ent (&h->plt.plist,
4580 && ent->plt.refcount > 0)
4581 ent->plt.refcount -= 1;
4587 expecting_tls_get_addr = 2;
4598 if (!expecting_tls_get_addr
4599 || !sec->has_tls_get_addr_call)
4602 if (rel + 1 < relend
4603 && branch_reloc_hash_match (ibfd, rel + 1,
4604 htab->tls_get_addr))
4607 /* Uh oh, we didn't find the expected call. We
4608 could just mark this symbol to exclude it
4609 from tls optimization but it's safer to skip
4610 the entire optimization. */
4611 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
4612 "TLS optimization disabled\n"),
4613 ibfd, sec, rel->r_offset);
4614 if (elf_section_data (sec)->relocs != relstart)
4621 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4622 got_count = &h->got.refcount;
4626 bfd_signed_vma *lgot_refs;
4627 struct plt_entry **local_plt;
4628 unsigned char *lgot_masks;
4630 lgot_refs = elf_local_got_refcounts (ibfd);
4631 if (lgot_refs == NULL)
4633 local_plt = (struct plt_entry **)
4634 (lgot_refs + symtab_hdr->sh_info);
4635 lgot_masks = (unsigned char *)
4636 (local_plt + symtab_hdr->sh_info);
4637 tls_mask = &lgot_masks[r_symndx];
4638 got_count = &lgot_refs[r_symndx];
4641 /* If we don't have old-style __tls_get_addr calls
4642 without TLSGD/TLSLD marker relocs, and we haven't
4643 found a new-style __tls_get_addr call with a
4644 marker for this symbol, then we either have a
4645 broken object file or an -mlongcall style
4646 indirect call to __tls_get_addr without a marker.
4647 Disable optimization in this case. */
4648 if ((tls_clear & (TLS_GD | TLS_LD)) != 0
4649 && !sec->has_tls_get_addr_call
4650 && ((*tls_mask & (TLS_TLS | TLS_MARK))
4651 != (TLS_TLS | TLS_MARK)))
4654 if (expecting_tls_get_addr)
4656 struct plt_entry *ent;
4659 if (bfd_link_pic (info)
4660 && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24
4661 || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL))
4662 addend = rel[1].r_addend;
4663 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4665 if (ent != NULL && ent->plt.refcount > 0)
4666 ent->plt.refcount -= 1;
4668 if (expecting_tls_get_addr == 2)
4674 /* We managed to get rid of a got entry. */
4679 *tls_mask |= tls_set;
4680 *tls_mask &= ~tls_clear;
4683 if (elf_section_data (sec)->relocs != relstart)
4687 htab->do_tls_opt = 1;
4691 /* Find dynamic relocs for H that apply to read-only sections. */
4694 readonly_dynrelocs (struct elf_link_hash_entry *h)
4696 struct elf_dyn_relocs *p;
4698 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4700 asection *s = p->sec->output_section;
4702 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4708 /* Return true if we have dynamic relocs against H or any of its weak
4709 aliases, that apply to read-only sections. Cannot be used after
4710 size_dynamic_sections. */
4713 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
4715 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
4718 if (readonly_dynrelocs (&eh->elf))
4720 eh = ppc_elf_hash_entry (eh->elf.u.alias);
4721 } while (eh != NULL && &eh->elf != h);
4726 /* Return whether H has pc-relative dynamic relocs. */
4729 pc_dynrelocs (struct elf_link_hash_entry *h)
4731 struct elf_dyn_relocs *p;
4733 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4734 if (p->pc_count != 0)
4739 /* Adjust a symbol defined by a dynamic object and referenced by a
4740 regular object. The current definition is in some section of the
4741 dynamic object, but we're not including those sections. We have to
4742 change the definition to something the rest of the link can
4746 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4747 struct elf_link_hash_entry *h)
4749 struct ppc_elf_link_hash_table *htab;
4753 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4754 h->root.root.string);
4757 /* Make sure we know what is going on here. */
4758 htab = ppc_elf_hash_table (info);
4759 BFD_ASSERT (htab->elf.dynobj != NULL
4761 || h->type == STT_GNU_IFUNC
4765 && !h->def_regular)));
4767 /* Deal with function syms. */
4768 if (h->type == STT_FUNC
4769 || h->type == STT_GNU_IFUNC
4772 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
4773 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
4774 /* Discard dyn_relocs when non-pic if we've decided that a
4775 function symbol is local. */
4776 if (!bfd_link_pic (info) && local)
4777 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4779 /* Clear procedure linkage table information for any symbol that
4780 won't need a .plt entry. */
4781 struct plt_entry *ent;
4782 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4783 if (ent->plt.refcount > 0)
4786 || (h->type != STT_GNU_IFUNC
4788 && (htab->can_convert_all_inline_plt
4789 || (ppc_elf_hash_entry (h)->tls_mask
4790 & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)))
4792 /* A PLT entry is not required/allowed when:
4794 1. We are not using ld.so; because then the PLT entry
4795 can't be set up, so we can't use one. In this case,
4796 ppc_elf_adjust_dynamic_symbol won't even be called.
4798 2. GC has rendered the entry unused.
4800 3. We know for certain that a call to this symbol
4801 will go to this object, or will remain undefined. */
4802 h->plt.plist = NULL;
4804 h->pointer_equality_needed = 0;
4808 /* Taking a function's address in a read/write section
4809 doesn't require us to define the function symbol in the
4810 executable on a plt call stub. A dynamic reloc can
4811 be used instead, giving better runtime performance.
4812 (Calls via that function pointer don't need to bounce
4813 through the plt call stub.) Similarly, use a dynamic
4814 reloc for a weak reference when possible, allowing the
4815 resolution of the symbol to be set at load time rather
4817 if ((h->pointer_equality_needed
4819 && !h->ref_regular_nonweak
4820 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4821 && !htab->is_vxworks
4822 && !ppc_elf_hash_entry (h)->has_sda_refs
4823 && !readonly_dynrelocs (h))
4825 h->pointer_equality_needed = 0;
4826 /* If we haven't seen a branch reloc and the symbol
4827 isn't an ifunc then we don't need a plt entry. */
4828 if (!h->needs_plt && h->type != STT_GNU_IFUNC)
4829 h->plt.plist = NULL;
4831 else if (!bfd_link_pic (info))
4832 /* We are going to be defining the function symbol on the
4833 plt stub, so no dyn_relocs needed when non-pic. */
4834 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4836 h->protected_def = 0;
4837 /* Function symbols can't have copy relocs. */
4841 h->plt.plist = NULL;
4843 /* If this is a weak symbol, and there is a real definition, the
4844 processor independent code will have arranged for us to see the
4845 real definition first, and we can just use the same value. */
4846 if (h->is_weakalias)
4848 struct elf_link_hash_entry *def = weakdef (h);
4849 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
4850 h->root.u.def.section = def->root.u.def.section;
4851 h->root.u.def.value = def->root.u.def.value;
4852 if (def->root.u.def.section == htab->elf.sdynbss
4853 || def->root.u.def.section == htab->elf.sdynrelro
4854 || def->root.u.def.section == htab->dynsbss)
4855 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4859 /* This is a reference to a symbol defined by a dynamic object which
4860 is not a function. */
4862 /* If we are creating a shared library, we must presume that the
4863 only references to the symbol are via the global offset table.
4864 For such cases we need not do anything here; the relocations will
4865 be handled correctly by relocate_section. */
4866 if (bfd_link_pic (info))
4868 h->protected_def = 0;
4872 /* If there are no references to this symbol that do not use the
4873 GOT, we don't need to generate a copy reloc. */
4874 if (!h->non_got_ref)
4876 h->protected_def = 0;
4880 /* Protected variables do not work with .dynbss. The copy in
4881 .dynbss won't be used by the shared library with the protected
4882 definition for the variable. Editing to PIC, or text relocations
4883 are preferable to an incorrect program. */
4884 if (h->protected_def)
4886 if (ELIMINATE_COPY_RELOCS
4887 && ppc_elf_hash_entry (h)->has_addr16_ha
4888 && ppc_elf_hash_entry (h)->has_addr16_lo
4889 && htab->params->pic_fixup == 0
4890 && info->disable_target_specific_optimizations <= 1)
4891 htab->params->pic_fixup = 1;
4895 /* If -z nocopyreloc was given, we won't generate them either. */
4896 if (info->nocopyreloc)
4899 /* If we don't find any dynamic relocs in read-only sections, then
4900 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4901 We can't do this if there are any small data relocations. This
4902 doesn't work on VxWorks, where we can not have dynamic
4903 relocations (other than copy and jump slot relocations) in an
4905 if (ELIMINATE_COPY_RELOCS
4906 && !ppc_elf_hash_entry (h)->has_sda_refs
4907 && !htab->is_vxworks
4909 && !alias_readonly_dynrelocs (h))
4912 /* We must allocate the symbol in our .dynbss section, which will
4913 become part of the .bss section of the executable. There will be
4914 an entry for this symbol in the .dynsym section. The dynamic
4915 object will contain position independent code, so all references
4916 from the dynamic object to this symbol will go through the global
4917 offset table. The dynamic linker will use the .dynsym entry to
4918 determine the address it must put in the global offset table, so
4919 both the dynamic object and the regular object will refer to the
4920 same memory location for the variable.
4922 Of course, if the symbol is referenced using SDAREL relocs, we
4923 must instead allocate it in .sbss. */
4924 if (ppc_elf_hash_entry (h)->has_sda_refs)
4926 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
4927 s = htab->elf.sdynrelro;
4929 s = htab->elf.sdynbss;
4930 BFD_ASSERT (s != NULL);
4932 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
4936 /* We must generate a R_PPC_COPY reloc to tell the dynamic
4937 linker to copy the initial value out of the dynamic object
4938 and into the runtime process image. */
4939 if (ppc_elf_hash_entry (h)->has_sda_refs)
4940 srel = htab->relsbss;
4941 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
4942 srel = htab->elf.sreldynrelro;
4944 srel = htab->elf.srelbss;
4945 BFD_ASSERT (srel != NULL);
4946 srel->size += sizeof (Elf32_External_Rela);
4950 /* We no longer want dyn_relocs. */
4951 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4952 return _bfd_elf_adjust_dynamic_copy (info, h, s);
4955 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4956 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4957 specifying the addend on the plt relocation. For -fpic code, the sym
4958 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4959 xxxxxxxx.got2.plt_pic32.<callee>. */
4962 add_stub_sym (struct plt_entry *ent,
4963 struct elf_link_hash_entry *h,
4964 struct bfd_link_info *info)
4966 struct elf_link_hash_entry *sh;
4967 size_t len1, len2, len3;
4970 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4972 if (bfd_link_pic (info))
4973 stub = ".plt_pic32.";
4975 stub = ".plt_call32.";
4977 len1 = strlen (h->root.root.string);
4978 len2 = strlen (stub);
4981 len3 = strlen (ent->sec->name);
4982 name = bfd_malloc (len1 + len2 + len3 + 9);
4985 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4987 memcpy (name + 8, ent->sec->name, len3);
4988 memcpy (name + 8 + len3, stub, len2);
4989 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4990 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4993 if (sh->root.type == bfd_link_hash_new)
4995 sh->root.type = bfd_link_hash_defined;
4996 sh->root.u.def.section = htab->glink;
4997 sh->root.u.def.value = ent->glink_offset;
4998 sh->ref_regular = 1;
4999 sh->def_regular = 1;
5000 sh->ref_regular_nonweak = 1;
5001 sh->forced_local = 1;
5003 sh->root.linker_def = 1;
5008 /* Allocate NEED contiguous space in .got, and return the offset.
5009 Handles allocation of the got header when crossing 32k. */
5012 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5015 unsigned int max_before_header;
5017 if (htab->plt_type == PLT_VXWORKS)
5019 where = htab->elf.sgot->size;
5020 htab->elf.sgot->size += need;
5024 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5025 if (need <= htab->got_gap)
5027 where = max_before_header - htab->got_gap;
5028 htab->got_gap -= need;
5032 if (htab->elf.sgot->size + need > max_before_header
5033 && htab->elf.sgot->size <= max_before_header)
5035 htab->got_gap = max_before_header - htab->elf.sgot->size;
5036 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5038 where = htab->elf.sgot->size;
5039 htab->elf.sgot->size += need;
5045 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5046 TLS_LD is excluded because those go in a special GOT slot. */
5048 static inline unsigned int
5049 got_entries_needed (int tls_mask)
5052 if ((tls_mask & TLS_TLS) == 0)
5057 if ((tls_mask & TLS_GD) != 0)
5059 if ((tls_mask & (TLS_TPREL | TLS_GDIE)) != 0)
5061 if ((tls_mask & TLS_DTPREL) != 0)
5067 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5068 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5071 static inline unsigned int
5072 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5074 /* All the entries we allocated need relocs.
5075 Except IE in executable with a local symbol. We could also omit
5076 the DTPREL reloc on the second word of a GD entry under the same
5077 condition as that for IE, but ld.so needs to differentiate
5078 LD and GD entries. */
5079 if (known && (tls_mask & TLS_TLS) != 0
5080 && (tls_mask & (TLS_TPREL | TLS_GDIE)) != 0)
5082 return need * sizeof (Elf32_External_Rela) / 4;
5085 /* If H is undefined, make it dynamic if that makes sense. */
5088 ensure_undef_dynamic (struct bfd_link_info *info,
5089 struct elf_link_hash_entry *h)
5091 struct elf_link_hash_table *htab = elf_hash_table (info);
5093 if (htab->dynamic_sections_created
5094 && ((info->dynamic_undefined_weak != 0
5095 && h->root.type == bfd_link_hash_undefweak)
5096 || h->root.type == bfd_link_hash_undefined)
5099 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5100 return bfd_elf_link_record_dynamic_symbol (info, h);
5104 /* Allocate space in associated reloc sections for dynamic relocs. */
5107 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5109 struct bfd_link_info *info = inf;
5110 struct ppc_elf_link_hash_entry *eh;
5111 struct ppc_elf_link_hash_table *htab;
5112 struct elf_dyn_relocs *p;
5115 if (h->root.type == bfd_link_hash_indirect)
5118 htab = ppc_elf_hash_table (info);
5119 eh = (struct ppc_elf_link_hash_entry *) h;
5120 if (eh->elf.got.refcount > 0
5121 || (ELIMINATE_COPY_RELOCS
5122 && !eh->elf.def_regular
5123 && eh->elf.protected_def
5124 && eh->has_addr16_ha
5125 && eh->has_addr16_lo
5126 && htab->params->pic_fixup > 0))
5130 /* Make sure this symbol is output as a dynamic symbol. */
5131 if (!ensure_undef_dynamic (info, &eh->elf))
5135 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
5137 if (!eh->elf.def_dynamic)
5138 /* We'll just use htab->tlsld_got.offset. This should
5139 always be the case. It's a little odd if we have
5140 a local dynamic reloc against a non-local symbol. */
5141 htab->tlsld_got.refcount += 1;
5145 need += got_entries_needed (eh->tls_mask);
5147 eh->elf.got.offset = (bfd_vma) -1;
5150 eh->elf.got.offset = allocate_got (htab, need);
5151 if ((bfd_link_pic (info)
5152 || (htab->elf.dynamic_sections_created
5153 && eh->elf.dynindx != -1
5154 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5155 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5158 bfd_boolean tprel_known = (bfd_link_executable (info)
5159 && SYMBOL_REFERENCES_LOCAL (info,
5162 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5163 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)
5164 && eh->elf.def_dynamic)
5165 need -= sizeof (Elf32_External_Rela);
5166 rsec = htab->elf.srelgot;
5167 if (eh->elf.type == STT_GNU_IFUNC)
5168 rsec = htab->elf.irelplt;
5174 eh->elf.got.offset = (bfd_vma) -1;
5176 /* If no dynamic sections we can't have dynamic relocs, except for
5177 IFUNCs which are handled even in static executables. */
5178 if (!htab->elf.dynamic_sections_created
5179 && h->type != STT_GNU_IFUNC)
5180 eh->dyn_relocs = NULL;
5182 /* Discard relocs on undefined symbols that must be local. */
5183 else if (h->root.type == bfd_link_hash_undefined
5184 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5185 eh->dyn_relocs = NULL;
5187 /* Also discard relocs on undefined weak syms with non-default
5188 visibility, or when dynamic_undefined_weak says so. */
5189 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5190 eh->dyn_relocs = NULL;
5192 if (eh->dyn_relocs == NULL)
5195 /* In the shared -Bsymbolic case, discard space allocated for
5196 dynamic pc-relative relocs against symbols which turn out to be
5197 defined in regular objects. For the normal shared case, discard
5198 space for relocs that have become local due to symbol visibility
5200 else if (bfd_link_pic (info))
5202 /* Relocs that use pc_count are those that appear on a call insn,
5203 or certain REL relocs (see must_be_dyn_reloc) that can be
5204 generated via assembly. We want calls to protected symbols to
5205 resolve directly to the function rather than going via the plt.
5206 If people want function pointer comparisons to work as expected
5207 then they should avoid writing weird assembly. */
5208 if (SYMBOL_CALLS_LOCAL (info, h))
5210 struct elf_dyn_relocs **pp;
5212 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5214 p->count -= p->pc_count;
5223 if (htab->is_vxworks)
5225 struct elf_dyn_relocs **pp;
5227 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5229 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5236 if (eh->dyn_relocs != NULL)
5238 /* Make sure this symbol is output as a dynamic symbol. */
5239 if (!ensure_undef_dynamic (info, h))
5243 else if (ELIMINATE_COPY_RELOCS)
5245 /* For the non-pic case, discard space for relocs against
5246 symbols which turn out to need copy relocs or are not
5248 if (h->dynamic_adjusted
5250 && !ELF_COMMON_DEF_P (h)
5251 && !(h->protected_def
5252 && eh->has_addr16_ha
5253 && eh->has_addr16_lo
5254 && htab->params->pic_fixup > 0))
5256 /* Make sure this symbol is output as a dynamic symbol. */
5257 if (!ensure_undef_dynamic (info, h))
5260 if (h->dynindx == -1)
5261 eh->dyn_relocs = NULL;
5264 eh->dyn_relocs = NULL;
5267 /* Allocate space. */
5268 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5270 asection *sreloc = elf_section_data (p->sec)->sreloc;
5271 if (eh->elf.type == STT_GNU_IFUNC)
5272 sreloc = htab->elf.irelplt;
5273 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5276 /* Handle PLT relocs. Done last, after dynindx has settled.
5277 We might need a PLT entry when the symbol
5280 c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
5281 d) has plt16 relocs and we are linking statically. */
5282 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
5284 || h->type == STT_GNU_IFUNC
5285 || (h->needs_plt && h->dynamic_adjusted)
5288 && !htab->elf.dynamic_sections_created
5289 && !htab->can_convert_all_inline_plt
5290 && (ppc_elf_hash_entry (h)->tls_mask
5291 & (TLS_TLS | PLT_KEEP)) == PLT_KEEP))
5293 struct plt_entry *ent;
5294 bfd_boolean doneone = FALSE;
5295 bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
5297 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5298 if (ent->plt.refcount > 0)
5300 asection *s = htab->elf.splt;
5304 if (h->type == STT_GNU_IFUNC)
5310 if (htab->plt_type == PLT_NEW || !dyn)
5314 plt_offset = s->size;
5317 ent->plt.offset = plt_offset;
5319 if (s == htab->pltlocal)
5320 ent->glink_offset = glink_offset;
5324 if (!doneone || bfd_link_pic (info))
5326 glink_offset = s->size;
5327 s->size += GLINK_ENTRY_SIZE (htab, h);
5330 && !bfd_link_pic (info)
5334 h->root.u.def.section = s;
5335 h->root.u.def.value = glink_offset;
5337 ent->glink_offset = glink_offset;
5339 if (htab->params->emit_stub_syms
5340 && !add_stub_sym (ent, h, info))
5348 /* If this is the first .plt entry, make room
5349 for the special first entry. */
5351 s->size += htab->plt_initial_entry_size;
5353 /* The PowerPC PLT is actually composed of two
5354 parts, the first part is 2 words (for a load
5355 and a jump), and then there is a remaining
5356 word available at the end. */
5357 plt_offset = (htab->plt_initial_entry_size
5358 + (htab->plt_slot_size
5360 - htab->plt_initial_entry_size)
5361 / htab->plt_entry_size)));
5363 /* If this symbol is not defined in a regular
5364 file, and we are not generating a shared
5365 library, then set the symbol to this location
5366 in the .plt. This is to avoid text
5367 relocations, and is required to make
5368 function pointers compare as equal between
5369 the normal executable and the shared library. */
5370 if (! bfd_link_pic (info)
5374 h->root.u.def.section = s;
5375 h->root.u.def.value = plt_offset;
5378 /* Make room for this entry. */
5379 s->size += htab->plt_entry_size;
5380 /* After the 8192nd entry, room for two entries
5382 if (htab->plt_type == PLT_OLD
5383 && (s->size - htab->plt_initial_entry_size)
5384 / htab->plt_entry_size
5385 > PLT_NUM_SINGLE_ENTRIES)
5386 s->size += htab->plt_entry_size;
5388 ent->plt.offset = plt_offset;
5391 /* We also need to make an entry in the .rela.plt section. */
5396 if (h->type == STT_GNU_IFUNC)
5398 s = htab->elf.irelplt;
5399 s->size += sizeof (Elf32_External_Rela);
5401 else if (bfd_link_pic (info))
5403 s = htab->relpltlocal;
5404 s->size += sizeof (Elf32_External_Rela);
5409 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
5411 if (htab->plt_type == PLT_VXWORKS)
5413 /* Allocate space for the unloaded relocations. */
5414 if (!bfd_link_pic (info)
5415 && htab->elf.dynamic_sections_created)
5418 == (bfd_vma) htab->plt_initial_entry_size)
5420 htab->srelplt2->size
5421 += (sizeof (Elf32_External_Rela)
5422 * VXWORKS_PLTRESOLVE_RELOCS);
5425 htab->srelplt2->size
5426 += (sizeof (Elf32_External_Rela)
5427 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5430 /* Every PLT entry has an associated GOT entry in
5432 htab->elf.sgotplt->size += 4;
5439 ent->plt.offset = (bfd_vma) -1;
5443 h->plt.plist = NULL;
5449 h->plt.plist = NULL;
5456 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5457 read-only sections. */
5460 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
5464 if (h->root.type == bfd_link_hash_indirect)
5467 sec = readonly_dynrelocs (h);
5470 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
5472 info->flags |= DF_TEXTREL;
5473 info->callbacks->minfo
5474 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
5475 sec->owner, h->root.root.string, sec);
5477 /* Not an error, just cut short the traversal. */
5483 static const unsigned char glink_eh_frame_cie[] =
5485 0, 0, 0, 16, /* length. */
5486 0, 0, 0, 0, /* id. */
5487 1, /* CIE version. */
5488 'z', 'R', 0, /* Augmentation string. */
5489 4, /* Code alignment. */
5490 0x7c, /* Data alignment. */
5492 1, /* Augmentation size. */
5493 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
5494 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
5497 /* Set the sizes of the dynamic sections. */
5500 ppc_elf_size_dynamic_sections (bfd *output_bfd,
5501 struct bfd_link_info *info)
5503 struct ppc_elf_link_hash_table *htab;
5509 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5512 htab = ppc_elf_hash_table (info);
5513 BFD_ASSERT (htab->elf.dynobj != NULL);
5515 if (elf_hash_table (info)->dynamic_sections_created)
5517 /* Set the contents of the .interp section to the interpreter. */
5518 if (bfd_link_executable (info) && !info->nointerp)
5520 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
5521 BFD_ASSERT (s != NULL);
5522 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5523 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5527 if (htab->plt_type == PLT_OLD)
5528 htab->got_header_size = 16;
5529 else if (htab->plt_type == PLT_NEW)
5530 htab->got_header_size = 12;
5532 /* Set up .got offsets for local syms, and space for local dynamic
5534 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5536 bfd_signed_vma *local_got;
5537 bfd_signed_vma *end_local_got;
5538 struct plt_entry **local_plt;
5539 struct plt_entry **end_local_plt;
5541 bfd_size_type locsymcount;
5542 Elf_Internal_Shdr *symtab_hdr;
5544 if (!is_ppc_elf (ibfd))
5547 for (s = ibfd->sections; s != NULL; s = s->next)
5549 struct ppc_dyn_relocs *p;
5551 for (p = ((struct ppc_dyn_relocs *)
5552 elf_section_data (s)->local_dynrel);
5556 if (!bfd_is_abs_section (p->sec)
5557 && bfd_is_abs_section (p->sec->output_section))
5559 /* Input section has been discarded, either because
5560 it is a copy of a linkonce section or due to
5561 linker script /DISCARD/, so we'll be discarding
5564 else if (htab->is_vxworks
5565 && strcmp (p->sec->output_section->name,
5568 /* Relocations in vxworks .tls_vars sections are
5569 handled specially by the loader. */
5571 else if (p->count != 0)
5573 asection *sreloc = elf_section_data (p->sec)->sreloc;
5575 sreloc = htab->elf.irelplt;
5576 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5577 if ((p->sec->output_section->flags
5578 & (SEC_READONLY | SEC_ALLOC))
5579 == (SEC_READONLY | SEC_ALLOC))
5581 info->flags |= DF_TEXTREL;
5582 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
5583 p->sec->owner, p->sec);
5589 local_got = elf_local_got_refcounts (ibfd);
5593 symtab_hdr = &elf_symtab_hdr (ibfd);
5594 locsymcount = symtab_hdr->sh_info;
5595 end_local_got = local_got + locsymcount;
5596 local_plt = (struct plt_entry **) end_local_got;
5597 end_local_plt = local_plt + locsymcount;
5598 lgot_masks = (char *) end_local_plt;
5600 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5604 if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
5605 htab->tlsld_got.refcount += 1;
5606 need = got_entries_needed (*lgot_masks);
5608 *local_got = (bfd_vma) -1;
5611 *local_got = allocate_got (htab, need);
5612 if (bfd_link_pic (info))
5615 bfd_boolean tprel_known = bfd_link_executable (info);
5617 need = got_relocs_needed (*lgot_masks, need, tprel_known);
5618 srel = htab->elf.srelgot;
5619 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
5620 srel = htab->elf.irelplt;
5626 *local_got = (bfd_vma) -1;
5628 if (htab->is_vxworks)
5631 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5632 lgot_masks = (char *) end_local_plt;
5633 for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks)
5635 struct plt_entry *ent;
5636 bfd_boolean doneone = FALSE;
5637 bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
5639 for (ent = *local_plt; ent != NULL; ent = ent->next)
5640 if (ent->plt.refcount > 0)
5642 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
5644 else if (htab->can_convert_all_inline_plt
5645 || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)
5647 ent->plt.offset = (bfd_vma) -1;
5655 plt_offset = s->size;
5658 ent->plt.offset = plt_offset;
5660 if (s != htab->pltlocal && (!doneone || bfd_link_pic (info)))
5663 glink_offset = s->size;
5664 s->size += GLINK_ENTRY_SIZE (htab, NULL);
5666 ent->glink_offset = glink_offset;
5670 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
5672 s = htab->elf.irelplt;
5673 s->size += sizeof (Elf32_External_Rela);
5675 else if (bfd_link_pic (info))
5677 s = htab->relpltlocal;
5678 s->size += sizeof (Elf32_External_Rela);
5684 ent->plt.offset = (bfd_vma) -1;
5688 /* Allocate space for global sym dynamic relocs. */
5689 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5691 if (htab->tlsld_got.refcount > 0)
5693 htab->tlsld_got.offset = allocate_got (htab, 8);
5694 if (bfd_link_pic (info))
5695 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
5698 htab->tlsld_got.offset = (bfd_vma) -1;
5700 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
5702 unsigned int g_o_t = 32768;
5704 /* If we haven't allocated the header, do so now. When we get here,
5705 for old plt/got the got size will be 0 to 32764 (not allocated),
5706 or 32780 to 65536 (header allocated). For new plt/got, the
5707 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5708 if (htab->elf.sgot->size <= 32768)
5710 g_o_t = htab->elf.sgot->size;
5711 if (htab->plt_type == PLT_OLD)
5713 htab->elf.sgot->size += htab->got_header_size;
5716 htab->elf.hgot->root.u.def.value = g_o_t;
5718 if (bfd_link_pic (info))
5720 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5722 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5723 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5725 if (info->emitrelocations)
5727 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5729 if (sda != NULL && sda->ref_regular)
5730 sda->root.u.def.section->flags |= SEC_KEEP;
5731 sda = htab->sdata[1].sym;
5732 if (sda != NULL && sda->ref_regular)
5733 sda->root.u.def.section->flags |= SEC_KEEP;
5736 if (htab->glink != NULL
5737 && htab->glink->size != 0
5738 && htab->elf.dynamic_sections_created)
5740 htab->glink_pltresolve = htab->glink->size;
5741 /* Space for the branch table. */
5743 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
5744 /* Pad out to align the start of PLTresolve. */
5745 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
5747 htab->glink->size += GLINK_PLTRESOLVE;
5749 if (htab->params->emit_stub_syms)
5751 struct elf_link_hash_entry *sh;
5752 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5753 TRUE, FALSE, FALSE);
5756 if (sh->root.type == bfd_link_hash_new)
5758 sh->root.type = bfd_link_hash_defined;
5759 sh->root.u.def.section = htab->glink;
5760 sh->root.u.def.value = htab->glink_pltresolve;
5761 sh->ref_regular = 1;
5762 sh->def_regular = 1;
5763 sh->ref_regular_nonweak = 1;
5764 sh->forced_local = 1;
5766 sh->root.linker_def = 1;
5768 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5769 TRUE, FALSE, FALSE);
5772 if (sh->root.type == bfd_link_hash_new)
5774 sh->root.type = bfd_link_hash_defined;
5775 sh->root.u.def.section = htab->glink;
5776 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5777 sh->ref_regular = 1;
5778 sh->def_regular = 1;
5779 sh->ref_regular_nonweak = 1;
5780 sh->forced_local = 1;
5782 sh->root.linker_def = 1;
5787 if (htab->glink != NULL
5788 && htab->glink->size != 0
5789 && htab->glink_eh_frame != NULL
5790 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
5791 && _bfd_elf_eh_frame_present (info))
5793 s = htab->glink_eh_frame;
5794 s->size = sizeof (glink_eh_frame_cie) + 20;
5795 if (bfd_link_pic (info))
5798 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
5803 /* We've now determined the sizes of the various dynamic sections.
5804 Allocate memory for them. */
5806 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5808 bfd_boolean strip_section = TRUE;
5810 if ((s->flags & SEC_LINKER_CREATED) == 0)
5813 if (s == htab->elf.splt
5814 || s == htab->elf.sgot)
5816 /* We'd like to strip these sections if they aren't needed, but if
5817 we've exported dynamic symbols from them we must leave them.
5818 It's too late to tell BFD to get rid of the symbols. */
5819 if (htab->elf.hplt != NULL)
5820 strip_section = FALSE;
5821 /* Strip this section if we don't need it; see the
5824 else if (s == htab->elf.iplt
5825 || s == htab->pltlocal
5827 || s == htab->glink_eh_frame
5828 || s == htab->elf.sgotplt
5830 || s == htab->elf.sdynbss
5831 || s == htab->elf.sdynrelro
5832 || s == htab->dynsbss)
5834 /* Strip these too. */
5836 else if (s == htab->sdata[0].section
5837 || s == htab->sdata[1].section)
5839 strip_section = (s->flags & SEC_KEEP) == 0;
5841 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
5846 /* Remember whether there are any relocation sections. */
5849 /* We use the reloc_count field as a counter if we need
5850 to copy relocs into the output file. */
5856 /* It's not one of our sections, so don't allocate space. */
5860 if (s->size == 0 && strip_section)
5862 /* If we don't need this section, strip it from the
5863 output file. This is mostly to handle .rela.bss and
5864 .rela.plt. We must create both sections in
5865 create_dynamic_sections, because they must be created
5866 before the linker maps input sections to output
5867 sections. The linker does that before
5868 adjust_dynamic_symbol is called, and it is that
5869 function which decides whether anything needs to go
5870 into these sections. */
5871 s->flags |= SEC_EXCLUDE;
5875 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5878 /* Allocate memory for the section contents. */
5879 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5880 if (s->contents == NULL)
5884 if (htab->elf.dynamic_sections_created)
5886 /* Add some entries to the .dynamic section. We fill in the
5887 values later, in ppc_elf_finish_dynamic_sections, but we
5888 must add the entries now so that we get the correct size for
5889 the .dynamic section. The DT_DEBUG entry is filled in by the
5890 dynamic linker and used by the debugger. */
5891 #define add_dynamic_entry(TAG, VAL) \
5892 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5894 if (bfd_link_executable (info))
5896 if (!add_dynamic_entry (DT_DEBUG, 0))
5900 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5902 if (!add_dynamic_entry (DT_PLTGOT, 0)
5903 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5904 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5905 || !add_dynamic_entry (DT_JMPREL, 0))
5909 if (htab->plt_type == PLT_NEW
5910 && htab->glink != NULL
5911 && htab->glink->size != 0)
5913 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5915 if (!htab->params->no_tls_get_addr_opt
5916 && htab->tls_get_addr != NULL
5917 && htab->tls_get_addr->plt.plist != NULL
5918 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
5924 if (!add_dynamic_entry (DT_RELA, 0)
5925 || !add_dynamic_entry (DT_RELASZ, 0)
5926 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5930 /* If any dynamic relocs apply to a read-only section, then we
5931 need a DT_TEXTREL entry. */
5932 if ((info->flags & DF_TEXTREL) == 0)
5933 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5936 if ((info->flags & DF_TEXTREL) != 0)
5938 if (!add_dynamic_entry (DT_TEXTREL, 0))
5941 if (htab->is_vxworks
5942 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5945 #undef add_dynamic_entry
5947 if (htab->glink_eh_frame != NULL
5948 && htab->glink_eh_frame->contents != NULL)
5950 unsigned char *p = htab->glink_eh_frame->contents;
5953 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
5954 /* CIE length (rewrite in case little-endian). */
5955 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
5956 p += sizeof (glink_eh_frame_cie);
5958 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
5959 bfd_put_32 (htab->elf.dynobj, val, p);
5962 val = p - htab->glink_eh_frame->contents;
5963 bfd_put_32 (htab->elf.dynobj, val, p);
5965 /* Offset to .glink. Set later. */
5968 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
5973 if (bfd_link_pic (info)
5974 && htab->elf.dynamic_sections_created)
5976 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
5978 *p++ = DW_CFA_advance_loc + adv;
5981 *p++ = DW_CFA_advance_loc1;
5984 else if (adv < 65536)
5986 *p++ = DW_CFA_advance_loc2;
5987 bfd_put_16 (htab->elf.dynobj, adv, p);
5992 *p++ = DW_CFA_advance_loc4;
5993 bfd_put_32 (htab->elf.dynobj, adv, p);
5996 *p++ = DW_CFA_register;
5999 *p++ = DW_CFA_advance_loc + 4;
6000 *p++ = DW_CFA_restore_extended;
6003 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6004 == htab->glink_eh_frame->size);
6010 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6011 if it looks like nothing is using them. */
6014 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6016 struct elf_link_hash_entry *sda = lsect->sym;
6018 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6022 s = bfd_get_section_by_name (output_bfd, lsect->name);
6023 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6025 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6026 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6028 sda->def_regular = 0;
6029 /* This is somewhat magic. See elf_link_output_extsym. */
6030 sda->ref_dynamic = 1;
6031 sda->forced_local = 0;
6038 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6040 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6044 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6045 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6050 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6053 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6055 if (h->plt.plist != NULL
6057 && (!h->pointer_equality_needed
6058 || !h->ref_regular_nonweak))
6061 return _bfd_elf_hash_symbol (h);
6064 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6066 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6067 used for some functions that are allowed to break the ABI). */
6068 static const int shared_stub_entry[] =
6070 0x7c0802a6, /* mflr 0 */
6071 0x429f0005, /* bcl 20, 31, .Lxxx */
6072 0x7d8802a6, /* mflr 12 */
6073 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6074 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6075 0x7c0803a6, /* mtlr 0 */
6076 0x7d8903a6, /* mtctr 12 */
6077 0x4e800420, /* bctr */
6080 static const int stub_entry[] =
6082 0x3d800000, /* lis 12,xxx@ha */
6083 0x398c0000, /* addi 12,12,xxx@l */
6084 0x7d8903a6, /* mtctr 12 */
6085 0x4e800420, /* bctr */
6088 struct ppc_elf_relax_info
6090 unsigned int workaround_size;
6091 unsigned int picfixup_size;
6094 /* This function implements long branch trampolines, and the ppc476
6095 icache bug workaround. Any section needing trampolines or patch
6096 space for the workaround has its size extended so that we can
6097 add trampolines at the end of the section. */
6100 ppc_elf_relax_section (bfd *abfd,
6102 struct bfd_link_info *link_info,
6105 struct one_branch_fixup
6107 struct one_branch_fixup *next;
6109 /* Final link, can use the symbol offset. For a
6110 relocatable link we use the symbol's index. */
6115 Elf_Internal_Shdr *symtab_hdr;
6116 bfd_byte *contents = NULL;
6117 Elf_Internal_Sym *isymbuf = NULL;
6118 Elf_Internal_Rela *internal_relocs = NULL;
6119 Elf_Internal_Rela *irel, *irelend = NULL;
6120 struct one_branch_fixup *branch_fixups = NULL;
6121 struct ppc_elf_relax_info *relax_info = NULL;
6122 unsigned changes = 0;
6123 bfd_boolean workaround_change;
6124 struct ppc_elf_link_hash_table *htab;
6125 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6127 bfd_boolean maybe_pasted;
6131 /* No need to do anything with non-alloc or non-code sections. */
6132 if ((isec->flags & SEC_ALLOC) == 0
6133 || (isec->flags & SEC_CODE) == 0
6134 || (isec->flags & SEC_LINKER_CREATED) != 0
6138 /* We cannot represent the required PIC relocs in the output, so don't
6139 do anything. The linker doesn't support mixing -shared and -r
6141 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6144 htab = ppc_elf_hash_table (link_info);
6148 isec->size = (isec->size + 3) & -4;
6149 if (isec->rawsize == 0)
6150 isec->rawsize = isec->size;
6151 trampbase = isec->size;
6153 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6154 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6155 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6157 if (htab->params->ppc476_workaround
6158 || htab->params->pic_fixup > 0)
6160 if (elf_section_data (isec)->sec_info == NULL)
6162 elf_section_data (isec)->sec_info
6163 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6164 if (elf_section_data (isec)->sec_info == NULL)
6167 relax_info = elf_section_data (isec)->sec_info;
6168 trampbase -= relax_info->workaround_size;
6171 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6172 || strcmp (isec->output_section->name, ".fini") == 0);
6173 /* Space for a branch around any trampolines. */
6174 trampoff = trampbase;
6175 if (maybe_pasted && trampbase == isec->rawsize)
6178 symtab_hdr = &elf_symtab_hdr (abfd);
6180 if (htab->params->branch_trampolines
6181 || htab->params->pic_fixup > 0)
6183 /* Get a copy of the native relocations. */
6184 if (isec->reloc_count != 0)
6186 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6187 link_info->keep_memory);
6188 if (internal_relocs == NULL)
6192 got2 = bfd_get_section_by_name (abfd, ".got2");
6194 irelend = internal_relocs + isec->reloc_count;
6195 for (irel = internal_relocs; irel < irelend; irel++)
6197 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6200 struct one_branch_fixup *f;
6201 size_t insn_offset = 0;
6202 bfd_vma max_branch_offset = 0, val;
6205 struct elf_link_hash_entry *h;
6206 Elf_Internal_Sym *isym;
6207 struct plt_entry **plist;
6208 unsigned char sym_type;
6213 case R_PPC_LOCAL24PC:
6214 case R_PPC_PLTREL24:
6216 max_branch_offset = 1 << 25;
6220 case R_PPC_REL14_BRTAKEN:
6221 case R_PPC_REL14_BRNTAKEN:
6222 max_branch_offset = 1 << 15;
6225 case R_PPC_ADDR16_HA:
6226 if (htab->params->pic_fixup > 0)
6234 /* Get the value of the symbol referred to by the reloc. */
6235 if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf,
6236 ELF32_R_SYM (irel->r_info), abfd))
6243 else if (isym->st_shndx == SHN_ABS)
6244 tsec = bfd_abs_section_ptr;
6248 toff = isym->st_value;
6249 sym_type = ELF_ST_TYPE (isym->st_info);
6254 toff = h->root.u.def.value;
6255 else if (h->root.type == bfd_link_hash_undefined
6256 || h->root.type == bfd_link_hash_undefweak)
6260 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6261 tsec = bfd_und_section_ptr;
6262 toff = bfd_link_relocatable (link_info) ? indx : 0;
6267 /* If this branch is to __tls_get_addr then we may later
6268 optimise away the call. We won't be needing a long-
6269 branch stub in that case. */
6270 if (bfd_link_executable (link_info)
6271 && h == htab->tls_get_addr
6272 && irel != internal_relocs)
6274 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6275 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6276 unsigned int tls_mask = 0;
6278 /* The previous reloc should be one of R_PPC_TLSGD or
6279 R_PPC_TLSLD, or for older object files, a reloc
6280 on the __tls_get_addr arg setup insn. Get tls
6281 mask bits from the symbol on that reloc. */
6282 if (t_symndx < symtab_hdr->sh_info)
6284 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6286 if (local_got_offsets != NULL)
6288 struct plt_entry **local_plt = (struct plt_entry **)
6289 (local_got_offsets + symtab_hdr->sh_info);
6290 char *lgot_masks = (char *)
6291 (local_plt + symtab_hdr->sh_info);
6292 tls_mask = lgot_masks[t_symndx];
6297 struct elf_link_hash_entry *th
6298 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6300 while (th->root.type == bfd_link_hash_indirect
6301 || th->root.type == bfd_link_hash_warning)
6302 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6305 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6308 /* The mask bits tell us if the call will be
6310 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6311 && (t_rtype == R_PPC_TLSGD
6312 || t_rtype == R_PPC_GOT_TLSGD16
6313 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6315 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6316 && (t_rtype == R_PPC_TLSLD
6317 || t_rtype == R_PPC_GOT_TLSLD16
6318 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6325 if (r_type == R_PPC_ADDR16_HA)
6330 && ppc_elf_hash_entry (h)->has_addr16_ha
6331 && ppc_elf_hash_entry (h)->has_addr16_lo)
6332 picfixup_size += 12;
6336 /* The condition here under which we call find_plt_ent must
6337 match that in relocate_section. If we call find_plt_ent here
6338 but not in relocate_section, or vice versa, then the branch
6339 destination used here may be incorrect. */
6343 /* We know is_branch_reloc (r_type) is true. */
6344 if (h->type == STT_GNU_IFUNC
6345 || r_type == R_PPC_PLTREL24)
6346 plist = &h->plt.plist;
6348 else if (sym_type == STT_GNU_IFUNC
6349 && elf_local_got_offsets (abfd) != NULL)
6351 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6352 struct plt_entry **local_plt = (struct plt_entry **)
6353 (local_got_offsets + symtab_hdr->sh_info);
6354 plist = local_plt + ELF32_R_SYM (irel->r_info);
6359 struct plt_entry *ent;
6361 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
6362 addend = irel->r_addend;
6363 ent = find_plt_ent (plist, got2, addend);
6366 if (htab->plt_type == PLT_NEW
6368 || !htab->elf.dynamic_sections_created
6369 || h->dynindx == -1)
6372 toff = ent->glink_offset;
6376 tsec = htab->elf.splt;
6377 toff = ent->plt.offset;
6382 /* If the branch and target are in the same section, you have
6383 no hope of adding stubs. We'll error out later should the
6388 /* toff is used for the symbol index when the symbol is
6389 undefined and we're doing a relocatable link, so we can't
6390 support addends. It would be possible to do so by
6391 putting the addend in one_branch_fixup but addends on
6392 branches are rare so it hardly seems worth supporting. */
6393 if (bfd_link_relocatable (link_info)
6394 && tsec == bfd_und_section_ptr
6395 && r_type != R_PPC_PLTREL24
6396 && irel->r_addend != 0)
6399 /* There probably isn't any reason to handle symbols in
6400 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6401 attribute for a code section, and we are only looking at
6402 branches. However, implement it correctly here as a
6403 reference for other target relax_section functions. */
6404 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6406 /* At this stage in linking, no SEC_MERGE symbol has been
6407 adjusted, so all references to such symbols need to be
6408 passed through _bfd_merged_section_offset. (Later, in
6409 relocate_section, all SEC_MERGE symbols *except* for
6410 section symbols have been adjusted.)
6412 gas may reduce relocations against symbols in SEC_MERGE
6413 sections to a relocation against the section symbol when
6414 the original addend was zero. When the reloc is against
6415 a section symbol we should include the addend in the
6416 offset passed to _bfd_merged_section_offset, since the
6417 location of interest is the original symbol. On the
6418 other hand, an access to "sym+addend" where "sym" is not
6419 a section symbol should not include the addend; Such an
6420 access is presumed to be an offset from "sym"; The
6421 location of interest is just "sym". */
6422 if (sym_type == STT_SECTION
6423 && r_type != R_PPC_PLTREL24)
6424 toff += irel->r_addend;
6427 = _bfd_merged_section_offset (abfd, &tsec,
6428 elf_section_data (tsec)->sec_info,
6431 if (sym_type != STT_SECTION
6432 && r_type != R_PPC_PLTREL24)
6433 toff += irel->r_addend;
6435 /* PLTREL24 addends are special. */
6436 else if (r_type != R_PPC_PLTREL24)
6437 toff += irel->r_addend;
6439 /* Attempted -shared link of non-pic code loses. */
6440 if ((!bfd_link_relocatable (link_info)
6441 && tsec == bfd_und_section_ptr)
6442 || tsec->output_section == NULL
6443 || (tsec->owner != NULL
6444 && (tsec->owner->flags & BFD_PLUGIN) != 0))
6447 roff = irel->r_offset;
6449 /* Avoid creating a lot of unnecessary fixups when
6450 relocatable if the output section size is such that a
6451 fixup can be created at final link.
6452 The max_branch_offset adjustment allows for some number
6453 of other fixups being needed at final link. */
6454 if (bfd_link_relocatable (link_info)
6455 && (isec->output_section->rawsize - (isec->output_offset + roff)
6456 < max_branch_offset - (max_branch_offset >> 4)))
6459 /* If the branch is in range, no need to do anything. */
6460 if (tsec != bfd_und_section_ptr
6461 && (!bfd_link_relocatable (link_info)
6462 /* A relocatable link may have sections moved during
6463 final link, so do not presume they remain in range. */
6464 || tsec->output_section == isec->output_section))
6466 bfd_vma symaddr, reladdr;
6468 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6469 reladdr = isec->output_section->vma + isec->output_offset + roff;
6470 if (symaddr - reladdr + max_branch_offset
6471 < 2 * max_branch_offset)
6475 /* Look for an existing fixup to this address. */
6476 for (f = branch_fixups; f ; f = f->next)
6477 if (f->tsec == tsec && f->toff == toff)
6483 unsigned long stub_rtype;
6485 val = trampoff - roff;
6486 if (val >= max_branch_offset)
6487 /* Oh dear, we can't reach a trampoline. Don't try to add
6488 one. We'll report an error later. */
6491 if (bfd_link_pic (link_info))
6493 size = 4 * ARRAY_SIZE (shared_stub_entry);
6498 size = 4 * ARRAY_SIZE (stub_entry);
6501 stub_rtype = R_PPC_RELAX;
6502 if (tsec == htab->elf.splt
6503 || tsec == htab->glink)
6505 stub_rtype = R_PPC_RELAX_PLT;
6506 if (r_type == R_PPC_PLTREL24)
6507 stub_rtype = R_PPC_RELAX_PLTREL24;
6510 /* Hijack the old relocation. Since we need two
6511 relocations for this use a "composite" reloc. */
6512 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6514 irel->r_offset = trampoff + insn_offset;
6515 if (r_type == R_PPC_PLTREL24
6516 && stub_rtype != R_PPC_RELAX_PLTREL24)
6519 /* Record the fixup so we don't do it again this section. */
6520 f = bfd_malloc (sizeof (*f));
6521 f->next = branch_fixups;
6524 f->trampoff = trampoff;
6532 val = f->trampoff - roff;
6533 if (val >= max_branch_offset)
6536 /* Nop out the reloc, since we're finalizing things here. */
6537 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6540 /* Get the section contents. */
6541 if (contents == NULL)
6543 /* Get cached copy if it exists. */
6544 if (elf_section_data (isec)->this_hdr.contents != NULL)
6545 contents = elf_section_data (isec)->this_hdr.contents;
6546 /* Go get them off disk. */
6547 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6551 /* Fix up the existing branch to hit the trampoline. */
6552 hit_addr = contents + roff;
6556 case R_PPC_LOCAL24PC:
6557 case R_PPC_PLTREL24:
6558 t0 = bfd_get_32 (abfd, hit_addr);
6560 t0 |= val & 0x3fffffc;
6561 bfd_put_32 (abfd, t0, hit_addr);
6565 case R_PPC_REL14_BRTAKEN:
6566 case R_PPC_REL14_BRNTAKEN:
6567 t0 = bfd_get_32 (abfd, hit_addr);
6570 bfd_put_32 (abfd, t0, hit_addr);
6575 while (branch_fixups != NULL)
6577 struct one_branch_fixup *f = branch_fixups;
6578 branch_fixups = branch_fixups->next;
6583 workaround_change = FALSE;
6585 if (htab->params->ppc476_workaround
6586 && (!bfd_link_relocatable (link_info)
6587 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
6589 bfd_vma addr, end_addr;
6590 unsigned int crossings;
6591 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
6593 addr = isec->output_section->vma + isec->output_offset;
6594 end_addr = addr + trampoff;
6596 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
6599 /* Keep space aligned, to ensure the patch code itself does
6600 not cross a page. Don't decrease size calculated on a
6601 previous pass as otherwise we might never settle on a layout. */
6602 newsize = 15 - ((end_addr - 1) & 15);
6603 newsize += crossings * 16;
6604 if (relax_info->workaround_size < newsize)
6606 relax_info->workaround_size = newsize;
6607 workaround_change = TRUE;
6609 /* Ensure relocate_section is called. */
6610 isec->flags |= SEC_RELOC;
6612 newsize = trampoff + relax_info->workaround_size;
6615 if (htab->params->pic_fixup > 0)
6617 picfixup_size -= relax_info->picfixup_size;
6618 if (picfixup_size != 0)
6619 relax_info->picfixup_size += picfixup_size;
6620 newsize += relax_info->picfixup_size;
6623 if (changes != 0 || picfixup_size != 0 || workaround_change)
6624 isec->size = newsize;
6627 && symtab_hdr->contents != (unsigned char *) isymbuf)
6629 if (! link_info->keep_memory)
6633 /* Cache the symbols for elf_link_input_bfd. */
6634 symtab_hdr->contents = (unsigned char *) isymbuf;
6638 if (contents != NULL
6639 && elf_section_data (isec)->this_hdr.contents != contents)
6641 if (!changes && !link_info->keep_memory)
6645 /* Cache the section contents for elf_link_input_bfd. */
6646 elf_section_data (isec)->this_hdr.contents = contents;
6650 changes += picfixup_size;
6653 /* Append sufficient NOP relocs so we can write out relocation
6654 information for the trampolines. */
6655 Elf_Internal_Shdr *rel_hdr;
6656 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6657 * sizeof (*new_relocs));
6662 memcpy (new_relocs, internal_relocs,
6663 isec->reloc_count * sizeof (*new_relocs));
6664 for (ix = changes; ix--;)
6666 irel = new_relocs + ix + isec->reloc_count;
6668 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6670 if (internal_relocs != elf_section_data (isec)->relocs)
6671 free (internal_relocs);
6672 elf_section_data (isec)->relocs = new_relocs;
6673 isec->reloc_count += changes;
6674 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6675 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6677 else if (internal_relocs != NULL
6678 && elf_section_data (isec)->relocs != internal_relocs)
6679 free (internal_relocs);
6681 *again = changes != 0 || workaround_change;
6685 while (branch_fixups != NULL)
6687 struct one_branch_fixup *f = branch_fixups;
6688 branch_fixups = branch_fixups->next;
6691 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6693 if (contents != NULL
6694 && elf_section_data (isec)->this_hdr.contents != contents)
6696 if (internal_relocs != NULL
6697 && elf_section_data (isec)->relocs != internal_relocs)
6698 free (internal_relocs);
6702 /* What to do when ld finds relocations against symbols defined in
6703 discarded sections. */
6706 ppc_elf_action_discarded (asection *sec)
6708 if (strcmp (".fixup", sec->name) == 0)
6711 if (strcmp (".got2", sec->name) == 0)
6714 return _bfd_elf_default_action_discarded (sec);
6717 /* Fill in the address for a pointer generated in a linker section. */
6720 elf_finish_pointer_linker_section (bfd *input_bfd,
6721 elf_linker_section_t *lsect,
6722 struct elf_link_hash_entry *h,
6724 const Elf_Internal_Rela *rel)
6726 elf_linker_section_pointers_t *linker_section_ptr;
6728 BFD_ASSERT (lsect != NULL);
6732 /* Handle global symbol. */
6733 struct ppc_elf_link_hash_entry *eh;
6735 eh = (struct ppc_elf_link_hash_entry *) h;
6736 BFD_ASSERT (eh->elf.def_regular);
6737 linker_section_ptr = eh->linker_section_pointer;
6741 /* Handle local symbol. */
6742 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6744 BFD_ASSERT (is_ppc_elf (input_bfd));
6745 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6746 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6749 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6752 BFD_ASSERT (linker_section_ptr != NULL);
6754 /* Offset will always be a multiple of four, so use the bottom bit
6755 as a "written" flag. */
6756 if ((linker_section_ptr->offset & 1) == 0)
6758 bfd_put_32 (lsect->section->owner,
6759 relocation + linker_section_ptr->addend,
6760 lsect->section->contents + linker_section_ptr->offset);
6761 linker_section_ptr->offset += 1;
6764 relocation = (lsect->section->output_section->vma
6765 + lsect->section->output_offset
6766 + linker_section_ptr->offset - 1
6767 - SYM_VAL (lsect->sym));
6771 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6772 lsect->name, (long) relocation, (long) relocation);
6778 #define PPC_LO(v) ((v) & 0xffff)
6779 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6780 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6783 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
6784 asection *plt_sec, unsigned char *p,
6785 struct bfd_link_info *info)
6787 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6788 bfd *output_bfd = info->output_bfd;
6790 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
6793 && h == htab->tls_get_addr
6794 && !htab->params->no_tls_get_addr_opt)
6796 bfd_put_32 (output_bfd, LWZ_11_3, p);
6798 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
6800 bfd_put_32 (output_bfd, MR_0_3, p);
6802 bfd_put_32 (output_bfd, CMPWI_11_0, p);
6804 bfd_put_32 (output_bfd, ADD_3_12_2, p);
6806 bfd_put_32 (output_bfd, BEQLR, p);
6808 bfd_put_32 (output_bfd, MR_3_0, p);
6810 bfd_put_32 (output_bfd, NOP, p);
6814 plt = ((ent->plt.offset & ~1)
6815 + plt_sec->output_section->vma
6816 + plt_sec->output_offset);
6818 if (bfd_link_pic (info))
6822 if (ent->addend >= 32768)
6824 + ent->sec->output_section->vma
6825 + ent->sec->output_offset);
6826 else if (htab->elf.hgot != NULL)
6827 got = SYM_VAL (htab->elf.hgot);
6831 if (plt + 0x8000 < 0x10000)
6832 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6835 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6837 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6842 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6844 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6847 bfd_put_32 (output_bfd, MTCTR_11, p);
6849 bfd_put_32 (output_bfd, BCTR, p);
6853 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
6858 /* Return true if symbol is defined statically. */
6861 is_static_defined (struct elf_link_hash_entry *h)
6863 return ((h->root.type == bfd_link_hash_defined
6864 || h->root.type == bfd_link_hash_defweak)
6865 && h->root.u.def.section != NULL
6866 && h->root.u.def.section->output_section != NULL);
6869 /* If INSN is an opcode that may be used with an @tls operand, return
6870 the transformed insn for TLS optimisation, otherwise return 0. If
6871 REG is non-zero only match an insn with RB or RA equal to REG. */
6874 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6878 if ((insn & (0x3f << 26)) != 31 << 26)
6881 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6882 rtra = insn & ((1 << 26) - (1 << 16));
6883 else if (((insn >> 16) & 0x1f) == reg)
6884 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6888 if ((insn & (0x3ff << 1)) == 266 << 1)
6891 else if ((insn & (0x1f << 1)) == 23 << 1
6892 && ((insn & (0x1f << 6)) < 14 << 6
6893 || ((insn & (0x1f << 6)) >= 16 << 6
6894 && (insn & (0x1f << 6)) < 24 << 6)))
6895 /* load and store indexed -> dform. */
6896 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6897 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6898 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6899 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6900 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6902 insn = (58 << 26) | 2;
6909 /* If INSN is an opcode that may be used with an @tprel operand, return
6910 the transformed insn for an undefined weak symbol, ie. with the
6911 thread pointer REG operand removed. Otherwise return 0. */
6914 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6916 if ((insn & (0x1f << 16)) == reg << 16
6917 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6918 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6919 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6920 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6921 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6922 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6923 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6924 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6925 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6926 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6927 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6928 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6929 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6930 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6931 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6932 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6934 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6935 && ((insn & 3) == 0 || (insn & 3) == 3))))
6937 insn &= ~(0x1f << 16);
6939 else if ((insn & (0x1f << 21)) == reg << 21
6940 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6941 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6942 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6944 insn &= ~(0x1f << 21);
6945 insn |= (insn & (0x1f << 16)) << 5;
6946 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6947 insn -= 2 >> 26; /* convert to ori,oris */
6955 is_insn_ds_form (unsigned int insn)
6957 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
6958 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
6959 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
6960 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
6964 is_insn_dq_form (unsigned int insn)
6966 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
6967 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
6968 && (insn & 3) == 1));
6971 /* The RELOCATE_SECTION function is called by the ELF backend linker
6972 to handle the relocations for a section.
6974 The relocs are always passed as Rela structures; if the section
6975 actually uses Rel structures, the r_addend field will always be
6978 This function is responsible for adjust the section contents as
6979 necessary, and (if using Rela relocs and generating a
6980 relocatable output file) adjusting the reloc addend as
6983 This function does not have to worry about setting the reloc
6984 address or the reloc symbol index.
6986 LOCAL_SYMS is a pointer to the swapped in local symbols.
6988 LOCAL_SECTIONS is an array giving the section in the input file
6989 corresponding to the st_shndx field of each local symbol.
6991 The global hash table entry for the global symbols can be found
6992 via elf_sym_hashes (input_bfd).
6994 When generating relocatable output, this function must handle
6995 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6996 going to be the section symbol corresponding to the output
6997 section, which means that the addend must be adjusted
7001 ppc_elf_relocate_section (bfd *output_bfd,
7002 struct bfd_link_info *info,
7004 asection *input_section,
7006 Elf_Internal_Rela *relocs,
7007 Elf_Internal_Sym *local_syms,
7008 asection **local_sections)
7010 Elf_Internal_Shdr *symtab_hdr;
7011 struct elf_link_hash_entry **sym_hashes;
7012 struct ppc_elf_link_hash_table *htab;
7013 Elf_Internal_Rela *rel;
7014 Elf_Internal_Rela *wrel;
7015 Elf_Internal_Rela *relend;
7016 Elf_Internal_Rela outrel;
7018 bfd_vma *local_got_offsets;
7019 bfd_boolean ret = TRUE;
7020 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7021 bfd_boolean is_vxworks_tls;
7022 unsigned int picfixup_size = 0;
7023 struct ppc_elf_relax_info *relax_info = NULL;
7026 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7027 "%ld relocations%s",
7028 input_bfd, input_section,
7029 (long) input_section->reloc_count,
7030 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7033 if (!is_ppc_elf (input_bfd))
7035 bfd_set_error (bfd_error_wrong_format);
7039 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7041 /* Initialize howto table if not already done. */
7042 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7043 ppc_elf_howto_init ();
7045 htab = ppc_elf_hash_table (info);
7046 local_got_offsets = elf_local_got_offsets (input_bfd);
7047 symtab_hdr = &elf_symtab_hdr (input_bfd);
7048 sym_hashes = elf_sym_hashes (input_bfd);
7049 /* We have to handle relocations in vxworks .tls_vars sections
7050 specially, because the dynamic loader is 'weird'. */
7051 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7052 && !strcmp (input_section->output_section->name,
7054 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7055 relax_info = elf_section_data (input_section)->sec_info;
7056 rel = wrel = relocs;
7057 relend = relocs + input_section->reloc_count;
7058 for (; rel < relend; wrel++, rel++)
7060 enum elf_ppc_reloc_type r_type;
7062 bfd_reloc_status_type r;
7063 Elf_Internal_Sym *sym;
7065 struct elf_link_hash_entry *h;
7066 const char *sym_name;
7067 reloc_howto_type *howto;
7068 unsigned long r_symndx;
7070 bfd_vma branch_bit, from;
7071 bfd_boolean unresolved_reloc, save_unresolved_reloc;
7073 unsigned int tls_type, tls_mask, tls_gd;
7074 struct plt_entry **ifunc, **plt_list;
7075 struct reloc_howto_struct alt_howto;
7078 r_type = ELF32_R_TYPE (rel->r_info);
7082 unresolved_reloc = FALSE;
7084 r_symndx = ELF32_R_SYM (rel->r_info);
7086 if (r_symndx < symtab_hdr->sh_info)
7088 sym = local_syms + r_symndx;
7089 sec = local_sections[r_symndx];
7090 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7092 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7096 bfd_boolean ignored;
7098 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7099 r_symndx, symtab_hdr, sym_hashes,
7101 unresolved_reloc, warned, ignored);
7103 sym_name = h->root.root.string;
7106 if (sec != NULL && discarded_section (sec))
7108 /* For relocs against symbols from removed linkonce sections,
7109 or sections discarded by a linker script, we just want the
7110 section contents zeroed. Avoid any special processing. */
7112 if (r_type < R_PPC_max)
7113 howto = ppc_elf_howto_table[r_type];
7115 _bfd_clear_contents (howto, input_bfd, input_section,
7116 contents, rel->r_offset);
7117 wrel->r_offset = rel->r_offset;
7121 /* For ld -r, remove relocations in debug sections against
7122 symbols defined in discarded sections. Not done for
7123 non-debug to preserve relocs in .eh_frame which the
7124 eh_frame editing code expects to be present. */
7125 if (bfd_link_relocatable (info)
7126 && (input_section->flags & SEC_DEBUGGING))
7132 if (bfd_link_relocatable (info))
7135 && r_type == R_PPC_PLTREL24
7136 && rel->r_addend != 0)
7138 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7139 addend specifies the GOT pointer offset within .got2. */
7140 rel->r_addend += got2->output_offset;
7142 if (r_type != R_PPC_RELAX_PLT
7143 && r_type != R_PPC_RELAX_PLTREL24
7144 && r_type != R_PPC_RELAX)
7148 /* TLS optimizations. Replace instruction sequences and relocs
7149 based on information we collected in tls_optimize. We edit
7150 RELOCS so that --emit-relocs will output something sensible
7151 for the final instruction stream. */
7155 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7156 else if (local_got_offsets != NULL)
7158 struct plt_entry **local_plt;
7161 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7162 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7163 tls_mask = lgot_masks[r_symndx];
7166 /* Ensure reloc mapping code below stays sane. */
7167 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7168 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7169 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7170 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7171 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7172 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7173 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7174 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7181 case R_PPC_GOT_TPREL16:
7182 case R_PPC_GOT_TPREL16_LO:
7183 if ((tls_mask & TLS_TLS) != 0
7184 && (tls_mask & TLS_TPREL) == 0)
7188 insn = bfd_get_32 (input_bfd,
7189 contents + rel->r_offset - d_offset);
7191 insn |= 0x3c020000; /* addis 0,2,0 */
7192 bfd_put_32 (input_bfd, insn,
7193 contents + rel->r_offset - d_offset);
7194 r_type = R_PPC_TPREL16_HA;
7195 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7200 if ((tls_mask & TLS_TLS) != 0
7201 && (tls_mask & TLS_TPREL) == 0)
7205 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7206 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7209 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7210 r_type = R_PPC_TPREL16_LO;
7211 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7213 /* Was PPC_TLS which sits on insn boundary, now
7214 PPC_TPREL16_LO which is at low-order half-word. */
7215 rel->r_offset += d_offset;
7219 case R_PPC_GOT_TLSGD16_HI:
7220 case R_PPC_GOT_TLSGD16_HA:
7222 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7226 case R_PPC_GOT_TLSLD16_HI:
7227 case R_PPC_GOT_TLSLD16_HA:
7228 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7231 if ((tls_mask & tls_gd) != 0)
7232 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7233 + R_PPC_GOT_TPREL16);
7236 rel->r_offset -= d_offset;
7237 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7238 r_type = R_PPC_NONE;
7240 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7244 case R_PPC_GOT_TLSGD16:
7245 case R_PPC_GOT_TLSGD16_LO:
7247 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7251 case R_PPC_GOT_TLSLD16:
7252 case R_PPC_GOT_TLSLD16_LO:
7253 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7255 unsigned int insn1, insn2;
7259 offset = (bfd_vma) -1;
7260 /* If not using the newer R_PPC_TLSGD/LD to mark
7261 __tls_get_addr calls, we must trust that the call
7262 stays with its arg setup insns, ie. that the next
7263 reloc is the __tls_get_addr call associated with
7264 the current reloc. Edit both insns. */
7265 if (input_section->has_tls_get_addr_call
7267 && branch_reloc_hash_match (input_bfd, rel + 1,
7268 htab->tls_get_addr))
7269 offset = rel[1].r_offset;
7270 /* We read the low GOT_TLS insn because we need to keep
7271 the destination reg. It may be something other than
7272 the usual r3, and moved to r3 before the call by
7273 intervening code. */
7274 insn1 = bfd_get_32 (input_bfd,
7275 contents + rel->r_offset - d_offset);
7276 if ((tls_mask & tls_gd) != 0)
7279 insn1 &= (0x1f << 21) | (0x1f << 16);
7280 insn1 |= 32 << 26; /* lwz */
7281 if (offset != (bfd_vma) -1)
7283 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7284 insn2 = 0x7c631214; /* add 3,3,2 */
7285 bfd_put_32 (input_bfd, insn2, contents + offset);
7287 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7288 + R_PPC_GOT_TPREL16);
7289 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7294 insn1 &= 0x1f << 21;
7295 insn1 |= 0x3c020000; /* addis r,2,0 */
7298 /* Was an LD reloc. */
7300 r_symndx < symtab_hdr->sh_info;
7302 if (local_sections[r_symndx] == sec)
7304 if (r_symndx >= symtab_hdr->sh_info)
7305 r_symndx = STN_UNDEF;
7306 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7307 if (r_symndx != STN_UNDEF)
7308 rel->r_addend -= (local_syms[r_symndx].st_value
7309 + sec->output_offset
7310 + sec->output_section->vma);
7312 r_type = R_PPC_TPREL16_HA;
7313 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7314 if (offset != (bfd_vma) -1)
7316 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7317 rel[1].r_offset = offset + d_offset;
7318 rel[1].r_addend = rel->r_addend;
7319 insn2 = 0x38630000; /* addi 3,3,0 */
7320 bfd_put_32 (input_bfd, insn2, contents + offset);
7323 bfd_put_32 (input_bfd, insn1,
7324 contents + rel->r_offset - d_offset);
7327 /* We changed the symbol on an LD reloc. Start over
7328 in order to get h, sym, sec etc. right. */
7335 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7336 && rel + 1 < relend)
7339 bfd_vma offset = rel->r_offset;
7341 if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
7343 bfd_put_32 (input_bfd, NOP, contents + offset);
7344 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7348 if ((tls_mask & TLS_GDIE) != 0)
7351 r_type = R_PPC_NONE;
7352 insn2 = 0x7c631214; /* add 3,3,2 */
7357 r_type = R_PPC_TPREL16_LO;
7358 rel->r_offset += d_offset;
7359 insn2 = 0x38630000; /* addi 3,3,0 */
7361 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7362 bfd_put_32 (input_bfd, insn2, contents + offset);
7363 /* Zap the reloc on the _tls_get_addr call too. */
7364 BFD_ASSERT (offset == rel[1].r_offset);
7365 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7370 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7371 && rel + 1 < relend)
7375 if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
7377 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7378 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7383 r_symndx < symtab_hdr->sh_info;
7385 if (local_sections[r_symndx] == sec)
7387 if (r_symndx >= symtab_hdr->sh_info)
7388 r_symndx = STN_UNDEF;
7389 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7390 if (r_symndx != STN_UNDEF)
7391 rel->r_addend -= (local_syms[r_symndx].st_value
7392 + sec->output_offset
7393 + sec->output_section->vma);
7395 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7396 rel->r_offset += d_offset;
7397 insn2 = 0x38630000; /* addi 3,3,0 */
7398 bfd_put_32 (input_bfd, insn2,
7399 contents + rel->r_offset - d_offset);
7400 /* Zap the reloc on the _tls_get_addr call too. */
7401 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7402 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7408 /* Handle other relocations that tweak non-addend part of insn. */
7415 /* Branch taken prediction relocations. */
7416 case R_PPC_ADDR14_BRTAKEN:
7417 case R_PPC_REL14_BRTAKEN:
7418 branch_bit = BRANCH_PREDICT_BIT;
7421 /* Branch not taken prediction relocations. */
7422 case R_PPC_ADDR14_BRNTAKEN:
7423 case R_PPC_REL14_BRNTAKEN:
7427 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7428 insn &= ~BRANCH_PREDICT_BIT;
7431 from = (rel->r_offset
7432 + input_section->output_offset
7433 + input_section->output_section->vma);
7435 /* Invert 'y' bit if not the default. */
7436 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7437 insn ^= BRANCH_PREDICT_BIT;
7439 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7443 case R_PPC_PLT16_HA:
7447 insn = bfd_get_32 (input_bfd,
7448 contents + rel->r_offset - d_offset);
7449 if ((insn & (0x3f << 26)) == 15u << 26
7450 && (insn & (0x1f << 16)) != 0)
7452 if (!bfd_link_pic (info))
7454 /* Convert addis to lis. */
7455 insn &= ~(0x1f << 16);
7456 bfd_put_32 (input_bfd, insn,
7457 contents + rel->r_offset - d_offset);
7460 else if (bfd_link_pic (info))
7461 info->callbacks->einfo
7462 (_("%P: %H: error: %s with unexpected instruction %x\n"),
7463 input_bfd, input_section, rel->r_offset,
7464 "R_PPC_PLT16_HA", insn);
7469 if (ELIMINATE_COPY_RELOCS
7473 && ppc_elf_hash_entry (h)->has_addr16_ha
7474 && ppc_elf_hash_entry (h)->has_addr16_lo
7475 && htab->params->pic_fixup > 0)
7477 /* Convert lis;addi or lis;load/store accessing a protected
7478 variable defined in a shared library to PIC. */
7481 if (r_type == R_PPC_ADDR16_HA)
7483 insn = bfd_get_32 (input_bfd,
7484 contents + rel->r_offset - d_offset);
7485 if ((insn & (0x3f << 26)) == (15u << 26)
7486 && (insn & (0x1f << 16)) == 0 /* lis */)
7492 p = (contents + input_section->size
7493 - relax_info->workaround_size
7494 - relax_info->picfixup_size
7496 off = (p - contents) - (rel->r_offset - d_offset);
7497 if (off > 0x1fffffc || (off & 3) != 0)
7498 info->callbacks->einfo
7499 (_("%H: fixup branch overflow\n"),
7500 input_bfd, input_section, rel->r_offset);
7502 bfd_put_32 (input_bfd, B | off,
7503 contents + rel->r_offset - d_offset);
7504 got_addr = (htab->elf.sgot->output_section->vma
7505 + htab->elf.sgot->output_offset
7506 + (h->got.offset & ~1));
7507 wrel->r_offset = (p - contents) + d_offset;
7508 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
7509 wrel->r_addend = got_addr;
7511 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
7512 bfd_put_32 (input_bfd, insn, p);
7514 /* Convert lis to lwz, loading address from GOT. */
7516 insn ^= (32u ^ 15u) << 26;
7517 insn |= (insn & (0x1f << 21)) >> 5;
7518 insn |= got_addr & 0xffff;
7519 bfd_put_32 (input_bfd, insn, p + 4);
7521 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
7522 picfixup_size += 12;
7524 /* Use one of the spare relocs, so --emit-relocs
7525 output is reasonable. */
7526 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7528 rel->r_offset = wrel[-1].r_offset + 4;
7529 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
7530 rel->r_addend = wrel[-1].r_addend;
7532 /* Continue on as if we had a got reloc, to output
7534 r_type = R_PPC_GOT16_LO;
7538 /* xgettext:c-format */
7539 (_("%pB(%pA+%#" PRIx64 "): error: "
7540 "%s with unexpected instruction %#x"),
7541 input_bfd, input_section, (uint64_t) rel->r_offset,
7542 "R_PPC_ADDR16_HA", insn);
7544 else if (r_type == R_PPC_ADDR16_LO)
7546 insn = bfd_get_32 (input_bfd,
7547 contents + rel->r_offset - d_offset);
7548 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7549 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7550 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7551 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7552 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7553 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7554 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7555 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7556 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7557 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7558 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7559 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7560 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7561 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7562 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7564 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7565 && ((insn & 3) == 0 || (insn & 3) == 3)))
7567 /* Arrange to apply the reloc addend, if any. */
7569 unresolved_reloc = FALSE;
7570 rel->r_info = ELF32_R_INFO (0, r_type);
7574 /* xgettext:c-format */
7575 (_("%pB(%pA+%#" PRIx64 "): error: "
7576 "%s with unexpected instruction %#x"),
7577 input_bfd, input_section, (uint64_t) rel->r_offset,
7578 "R_PPC_ADDR16_LO", insn);
7583 if (!htab->is_vxworks)
7585 struct plt_entry *ent;
7589 if (h->type == STT_GNU_IFUNC)
7590 ifunc = &h->plt.plist;
7592 else if (local_got_offsets != NULL
7593 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7595 struct plt_entry **local_plt;
7597 local_plt = (struct plt_entry **) (local_got_offsets
7598 + symtab_hdr->sh_info);
7599 ifunc = local_plt + r_symndx;
7604 && (!bfd_link_pic (info)
7605 || is_branch_reloc (r_type)
7606 || r_type == R_PPC_PLT16_LO
7607 || r_type == R_PPC_PLT16_HI
7608 || r_type == R_PPC_PLT16_HA))
7611 if (bfd_link_pic (info)
7612 && (r_type == R_PPC_PLTREL24
7613 || r_type == R_PPC_PLT16_LO
7614 || r_type == R_PPC_PLT16_HI
7615 || r_type == R_PPC_PLT16_HA))
7616 addend = rel->r_addend;
7617 ent = find_plt_ent (ifunc, got2, addend);
7621 if (bfd_link_pic (info)
7623 && htab->plt_type != PLT_NEW
7624 && (!htab->elf.dynamic_sections_created
7626 || h->dynindx == -1))
7628 /* Uh oh, we are going to create a pic glink stub
7629 for an ifunc (here for h == NULL and later in
7630 finish_dynamic_symbol for h != NULL), and
7631 apparently are using code compiled with
7632 -mbss-plt. The difficulty is that -mbss-plt code
7633 gives no indication via a magic PLTREL24 addend
7634 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
7635 is pointing into a .got2 section (and how far
7637 info->callbacks->einfo
7638 /* xgettext:c-format */
7639 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
7640 input_bfd, input_section, rel->r_offset, sym_name);
7643 unresolved_reloc = FALSE;
7644 if (htab->plt_type == PLT_NEW
7645 || !htab->elf.dynamic_sections_created
7647 || h->dynindx == -1)
7648 relocation = (htab->glink->output_section->vma
7649 + htab->glink->output_offset
7650 + (ent->glink_offset & ~1));
7652 relocation = (htab->elf.splt->output_section->vma
7653 + htab->elf.splt->output_offset
7658 addend = rel->r_addend;
7659 save_unresolved_reloc = unresolved_reloc;
7661 if (r_type < R_PPC_max)
7662 howto = ppc_elf_howto_table[r_type];
7669 case R_PPC_TPREL16_HA:
7670 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
7672 bfd_byte *p = contents + (rel->r_offset & ~3);
7673 unsigned int insn = bfd_get_32 (input_bfd, p);
7674 if ((insn & ((0x3f << 26) | 0x1f << 16))
7675 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
7676 /* xgettext:c-format */
7677 info->callbacks->minfo
7678 (_("%H: warning: %s unexpected insn %#x.\n"),
7679 input_bfd, input_section, rel->r_offset, howto->name, insn);
7681 bfd_put_32 (input_bfd, NOP, p);
7685 case R_PPC_TPREL16_LO:
7686 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
7688 bfd_byte *p = contents + (rel->r_offset & ~3);
7689 unsigned int insn = bfd_get_32 (input_bfd, p);
7690 insn &= ~(0x1f << 16);
7692 bfd_put_32 (input_bfd, insn, p);
7701 /* xgettext:c-format */
7702 _bfd_error_handler (_("%pB: %s unsupported"),
7703 input_bfd, howto->name);
7705 bfd_set_error (bfd_error_bad_value);
7713 case R_PPC_EMB_MRKREF:
7714 case R_PPC_GNU_VTINHERIT:
7715 case R_PPC_GNU_VTENTRY:
7718 /* GOT16 relocations. Like an ADDR16 using the symbol's
7719 address in the GOT as relocation value instead of the
7720 symbol's value itself. Also, create a GOT entry for the
7721 symbol and put the symbol value there. */
7722 case R_PPC_GOT_TLSGD16:
7723 case R_PPC_GOT_TLSGD16_LO:
7724 case R_PPC_GOT_TLSGD16_HI:
7725 case R_PPC_GOT_TLSGD16_HA:
7726 tls_type = TLS_TLS | TLS_GD;
7729 case R_PPC_GOT_TLSLD16:
7730 case R_PPC_GOT_TLSLD16_LO:
7731 case R_PPC_GOT_TLSLD16_HI:
7732 case R_PPC_GOT_TLSLD16_HA:
7733 tls_type = TLS_TLS | TLS_LD;
7736 case R_PPC_GOT_TPREL16:
7737 case R_PPC_GOT_TPREL16_LO:
7738 case R_PPC_GOT_TPREL16_HI:
7739 case R_PPC_GOT_TPREL16_HA:
7740 tls_type = TLS_TLS | TLS_TPREL;
7743 case R_PPC_GOT_DTPREL16:
7744 case R_PPC_GOT_DTPREL16_LO:
7745 case R_PPC_GOT_DTPREL16_HI:
7746 case R_PPC_GOT_DTPREL16_HA:
7747 tls_type = TLS_TLS | TLS_DTPREL;
7751 case R_PPC_GOT16_LO:
7752 case R_PPC_GOT16_HI:
7753 case R_PPC_GOT16_HA:
7757 /* Relocation is to the entry for this symbol in the global
7763 if (htab->elf.sgot == NULL)
7767 if (tls_type == (TLS_TLS | TLS_LD)
7769 || !h->def_dynamic))
7770 offp = &htab->tlsld_got.offset;
7773 if (!htab->elf.dynamic_sections_created
7775 || SYMBOL_REFERENCES_LOCAL (info, h)
7776 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
7777 /* This is actually a static link, or it is a
7778 -Bsymbolic link and the symbol is defined
7779 locally, or the symbol was forced to be local
7780 because of a version file. */
7785 unresolved_reloc = FALSE;
7787 offp = &h->got.offset;
7791 if (local_got_offsets == NULL)
7793 offp = &local_got_offsets[r_symndx];
7796 /* The offset must always be a multiple of 4. We use the
7797 least significant bit to record whether we have already
7798 processed this entry. */
7804 unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
7805 ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
7806 | TLS_TPREL | TLS_GDIE)
7809 if (offp == &htab->tlsld_got.offset)
7815 /* We might have multiple got entries for this sym.
7816 Initialize them all. */
7821 if ((tls_m & TLS_LD) != 0)
7823 tls_ty = TLS_TLS | TLS_LD;
7826 else if ((tls_m & TLS_GD) != 0)
7828 tls_ty = TLS_TLS | TLS_GD;
7831 else if ((tls_m & TLS_DTPREL) != 0)
7833 tls_ty = TLS_TLS | TLS_DTPREL;
7834 tls_m &= ~TLS_DTPREL;
7836 else if ((tls_m & (TLS_TPREL | TLS_GDIE)) != 0)
7838 tls_ty = TLS_TLS | TLS_TPREL;
7842 /* Generate relocs for the dynamic linker. */
7844 || (bfd_link_pic (info)
7846 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
7847 || offp == &htab->tlsld_got.offset)
7848 && !(tls_ty == (TLS_TLS | TLS_TPREL)
7849 && bfd_link_executable (info)
7850 && SYMBOL_REFERENCES_LOCAL (info, h))))
7852 asection *rsec = htab->elf.srelgot;
7857 rsec = htab->elf.irelplt;
7859 htab->local_ifunc_resolver = 1;
7860 else if (is_static_defined (h))
7861 htab->maybe_local_ifunc_resolver = 1;
7863 outrel.r_offset = (htab->elf.sgot->output_section->vma
7864 + htab->elf.sgot->output_offset
7866 outrel.r_addend = 0;
7867 if (tls_ty & (TLS_LD | TLS_GD))
7869 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7870 if (tls_ty == (TLS_TLS | TLS_GD))
7872 loc = rsec->contents;
7873 loc += (rsec->reloc_count++
7874 * sizeof (Elf32_External_Rela));
7875 bfd_elf32_swap_reloca_out (output_bfd,
7877 outrel.r_offset += 4;
7879 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7882 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7883 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7884 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7885 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7887 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7888 else if (ifunc != NULL)
7889 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7891 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7892 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7894 outrel.r_addend += relocation;
7895 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7897 if (htab->elf.tls_sec == NULL)
7898 outrel.r_addend = 0;
7900 outrel.r_addend -= htab->elf.tls_sec->vma;
7903 loc = rsec->contents;
7904 loc += (rsec->reloc_count++
7905 * sizeof (Elf32_External_Rela));
7906 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7909 /* Init the .got section contents if we're not
7910 emitting a reloc. */
7913 bfd_vma value = relocation;
7917 if (htab->elf.tls_sec == NULL)
7921 if (tls_ty & TLS_LD)
7924 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7925 if (tls_ty & TLS_TPREL)
7926 value += DTP_OFFSET - TP_OFFSET;
7929 if (tls_ty & (TLS_LD | TLS_GD))
7931 bfd_put_32 (input_bfd, value,
7932 htab->elf.sgot->contents + off + 4);
7936 bfd_put_32 (input_bfd, value,
7937 htab->elf.sgot->contents + off);
7941 if (tls_ty & (TLS_LD | TLS_GD))
7950 if (off >= (bfd_vma) -2)
7953 if ((tls_type & TLS_TLS) != 0)
7955 if (tls_type != (TLS_TLS | TLS_LD))
7957 if ((tls_mask & TLS_LD) != 0
7959 || !h->def_dynamic))
7961 if (tls_type != (TLS_TLS | TLS_GD))
7963 if ((tls_mask & TLS_GD) != 0)
7965 if (tls_type != (TLS_TLS | TLS_DTPREL))
7967 if ((tls_mask & TLS_DTPREL) != 0)
7974 /* If here for a picfixup, we're done. */
7975 if (r_type != ELF32_R_TYPE (rel->r_info))
7978 relocation = (htab->elf.sgot->output_section->vma
7979 + htab->elf.sgot->output_offset
7981 - SYM_VAL (htab->elf.hgot));
7983 /* Addends on got relocations don't make much sense.
7984 x+off@got is actually x@got+off, and since the got is
7985 generated by a hash table traversal, the value in the
7986 got at entry m+n bears little relation to the entry m. */
7988 info->callbacks->einfo
7989 /* xgettext:c-format */
7990 (_("%H: non-zero addend on %s reloc against `%s'\n"),
7991 input_bfd, input_section, rel->r_offset,
7997 /* Relocations that need no special processing. */
7998 case R_PPC_LOCAL24PC:
7999 /* It makes no sense to point a local relocation
8000 at a symbol not in this object. */
8001 if (unresolved_reloc)
8003 (*info->callbacks->undefined_symbol) (info,
8004 h->root.root.string,
8011 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8013 /* @local on an ifunc does not really make sense since
8014 the ifunc resolver can take you anywhere. More
8015 seriously, calls to ifuncs must go through a plt call
8016 stub, and for pic the plt call stubs uses r30 to
8017 access the PLT. The problem is that a call that is
8018 local won't have the +32k reloc addend trick marking
8019 -fPIC code, so the linker won't know whether r30 is
8020 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8021 /* xgettext:c-format */
8022 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8023 input_bfd, input_section, rel->r_offset,
8024 h->root.root.string);
8028 case R_PPC_DTPREL16:
8029 case R_PPC_DTPREL16_LO:
8030 case R_PPC_DTPREL16_HI:
8031 case R_PPC_DTPREL16_HA:
8032 if (htab->elf.tls_sec != NULL)
8033 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8036 /* Relocations that may need to be propagated if this is a shared
8039 case R_PPC_TPREL16_LO:
8040 case R_PPC_TPREL16_HI:
8041 case R_PPC_TPREL16_HA:
8043 && h->root.type == bfd_link_hash_undefweak
8044 && h->dynindx == -1)
8046 /* Make this relocation against an undefined weak symbol
8047 resolve to zero. This is really just a tweak, since
8048 code using weak externs ought to check that they are
8049 defined before using them. */
8050 bfd_byte *p = contents + rel->r_offset - d_offset;
8051 unsigned int insn = bfd_get_32 (input_bfd, p);
8052 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8054 bfd_put_32 (input_bfd, insn, p);
8057 if (htab->elf.tls_sec != NULL)
8058 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8059 /* The TPREL16 relocs shouldn't really be used in shared
8060 libs or with non-local symbols as that will result in
8061 DT_TEXTREL being set, but support them anyway. */
8065 if (htab->elf.tls_sec != NULL)
8066 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8069 case R_PPC_DTPREL32:
8070 if (htab->elf.tls_sec != NULL)
8071 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8074 case R_PPC_DTPMOD32:
8080 case R_PPC_REL16_LO:
8081 case R_PPC_REL16_HI:
8082 case R_PPC_REL16_HA:
8083 case R_PPC_REL16DX_HA:
8087 if (h == NULL || h == htab->elf.hgot)
8093 case R_PPC_ADDR16_LO:
8094 case R_PPC_ADDR16_HI:
8095 case R_PPC_ADDR16_HA:
8100 case R_PPC_VLE_REL8:
8101 case R_PPC_VLE_REL15:
8102 case R_PPC_VLE_REL24:
8105 case R_PPC_REL14_BRTAKEN:
8106 case R_PPC_REL14_BRNTAKEN:
8107 /* If these relocations are not to a named symbol, they can be
8108 handled right here, no need to bother the dynamic linker. */
8109 if (SYMBOL_CALLS_LOCAL (info, h)
8110 || h == htab->elf.hgot)
8116 case R_PPC_ADDR14_BRTAKEN:
8117 case R_PPC_ADDR14_BRNTAKEN:
8118 if (h != NULL && !bfd_link_pic (info))
8123 if ((input_section->flags & SEC_ALLOC) == 0
8127 if (bfd_link_pic (info)
8129 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8130 && ((h != NULL && pc_dynrelocs (h))
8131 || must_be_dyn_reloc (info, r_type)))
8133 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8141 fprintf (stderr, "ppc_elf_relocate_section needs to "
8142 "create relocation for %s\n",
8143 (h && h->root.root.string
8144 ? h->root.root.string : "<unknown>"));
8147 /* When generating a shared object, these relocations
8148 are copied into the output file to be resolved at run
8151 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8154 if (outrel.r_offset == (bfd_vma) -1
8155 || outrel.r_offset == (bfd_vma) -2)
8156 skip = (int) outrel.r_offset;
8157 outrel.r_offset += (input_section->output_section->vma
8158 + input_section->output_offset);
8160 /* Optimize unaligned reloc use. */
8161 if ((r_type == R_PPC_ADDR32 && (outrel.r_offset & 3) != 0)
8162 || (r_type == R_PPC_UADDR32 && (outrel.r_offset & 3) == 0))
8163 r_type ^= R_PPC_ADDR32 ^ R_PPC_UADDR32;
8164 if ((r_type == R_PPC_ADDR16 && (outrel.r_offset & 1) != 0)
8165 || (r_type == R_PPC_UADDR16 && (outrel.r_offset & 1) == 0))
8166 r_type ^= R_PPC_ADDR16 ^ R_PPC_UADDR16;
8169 memset (&outrel, 0, sizeof outrel);
8170 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8173 BFD_ASSERT (indx != -1);
8174 unresolved_reloc = FALSE;
8175 outrel.r_info = ELF32_R_INFO (indx, r_type);
8176 outrel.r_addend = rel->r_addend;
8180 outrel.r_addend = relocation + rel->r_addend;
8182 if (r_type != R_PPC_ADDR32)
8186 /* If we get here when building a static
8187 executable, then the libc startup function
8188 responsible for applying indirect function
8189 relocations is going to complain about
8191 If we get here when building a dynamic
8192 executable, it will be because we have
8193 a text relocation. The dynamic loader
8194 will set the text segment writable and
8195 non-executable to apply text relocations.
8196 So we'll segfault when trying to run the
8197 indirection function to resolve the reloc. */
8198 info->callbacks->einfo
8199 /* xgettext:c-format */
8200 (_("%H: relocation %s for indirect "
8201 "function %s unsupported\n"),
8202 input_bfd, input_section, rel->r_offset,
8207 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8209 else if (sec == NULL || sec->owner == NULL)
8211 bfd_set_error (bfd_error_bad_value);
8218 /* We are turning this relocation into one
8219 against a section symbol. It would be
8220 proper to subtract the symbol's value,
8221 osec->vma, from the emitted reloc addend,
8222 but ld.so expects buggy relocs.
8223 FIXME: Why not always use a zero index? */
8224 osec = sec->output_section;
8225 if ((osec->flags & SEC_THREAD_LOCAL) != 0)
8227 osec = htab->elf.tls_sec;
8232 indx = elf_section_data (osec)->dynindx;
8235 osec = htab->elf.text_index_section;
8236 indx = elf_section_data (osec)->dynindx;
8238 BFD_ASSERT (indx != 0);
8241 /* ld.so doesn't expect buggy TLS relocs.
8242 Don't leave the symbol value in the
8244 if (IS_PPC_TLS_RELOC (r_type))
8245 outrel.r_addend -= osec->vma;
8248 outrel.r_info = ELF32_R_INFO (indx, r_type);
8250 else if (ifunc != NULL)
8251 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8253 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8256 sreloc = elf_section_data (input_section)->sreloc;
8259 sreloc = htab->elf.irelplt;
8261 htab->local_ifunc_resolver = 1;
8262 else if (is_static_defined (h))
8263 htab->maybe_local_ifunc_resolver = 1;
8268 loc = sreloc->contents;
8269 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8270 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8275 /* This reloc will be computed at runtime. Clear the memory
8276 so that it contains a predictable value for prelink. */
8279 relocation = howto->pc_relative ? outrel.r_offset : 0;
8286 case R_PPC_RELAX_PLT:
8287 case R_PPC_RELAX_PLTREL24:
8290 struct plt_entry *ent;
8291 bfd_vma got2_addend = 0;
8293 if (r_type == R_PPC_RELAX_PLTREL24)
8295 if (bfd_link_pic (info))
8296 got2_addend = addend;
8299 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8300 if (htab->plt_type == PLT_NEW)
8301 relocation = (htab->glink->output_section->vma
8302 + htab->glink->output_offset
8303 + ent->glink_offset);
8305 relocation = (htab->elf.splt->output_section->vma
8306 + htab->elf.splt->output_offset
8315 size_t insn_offset = rel->r_offset;
8318 if (bfd_link_pic (info))
8320 relocation -= (input_section->output_section->vma
8321 + input_section->output_offset
8322 + rel->r_offset - 4);
8323 stub = shared_stub_entry;
8324 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8325 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8326 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8328 size = ARRAY_SIZE (shared_stub_entry) - 3;
8333 size = ARRAY_SIZE (stub_entry);
8336 relocation += addend;
8337 if (bfd_link_relocatable (info))
8340 /* First insn is HA, second is LO. */
8342 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8343 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8347 insn |= relocation & 0xffff;
8348 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8356 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8360 /* Rewrite the reloc and convert one of the trailing nop
8361 relocs to describe this relocation. */
8362 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8363 /* The relocs are at the bottom 2 bytes */
8364 wrel->r_offset = rel->r_offset + d_offset;
8365 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8366 wrel->r_addend = rel->r_addend;
8367 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8369 wrel->r_offset += 4;
8370 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8374 /* Indirect .sdata relocation. */
8375 case R_PPC_EMB_SDAI16:
8376 BFD_ASSERT (htab->sdata[0].section != NULL);
8377 if (!is_static_defined (htab->sdata[0].sym))
8379 unresolved_reloc = TRUE;
8383 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8384 h, relocation, rel);
8388 /* Indirect .sdata2 relocation. */
8389 case R_PPC_EMB_SDA2I16:
8390 BFD_ASSERT (htab->sdata[1].section != NULL);
8391 if (!is_static_defined (htab->sdata[1].sym))
8393 unresolved_reloc = TRUE;
8397 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8398 h, relocation, rel);
8402 /* Handle the TOC16 reloc. We want to use the offset within the .got
8403 section, not the actual VMA. This is appropriate when generating
8404 an embedded ELF object, for which the .got section acts like the
8405 AIX .toc section. */
8406 case R_PPC_TOC16: /* phony GOT16 relocations */
8407 if (sec == NULL || sec->output_section == NULL)
8409 unresolved_reloc = TRUE;
8412 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8414 || strcmp (bfd_get_section_name (sec->owner, sec),
8417 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8420 case R_PPC_PLTREL24:
8421 if (h != NULL && ifunc == NULL)
8423 struct plt_entry *ent;
8425 ent = find_plt_ent (&h->plt.plist, got2,
8426 bfd_link_pic (info) ? addend : 0);
8428 || htab->elf.splt == NULL)
8430 /* We didn't make a PLT entry for this symbol. This
8431 happens when statically linking PIC code, or when
8432 using -Bsymbolic. */
8436 /* Relocation is to the entry for this symbol in the
8437 procedure linkage table. */
8438 unresolved_reloc = FALSE;
8439 if (htab->plt_type == PLT_NEW)
8440 relocation = (htab->glink->output_section->vma
8441 + htab->glink->output_offset
8442 + ent->glink_offset);
8444 relocation = (htab->elf.splt->output_section->vma
8445 + htab->elf.splt->output_offset
8450 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8451 addend specifies the GOT pointer offset within .got2.
8452 Don't apply it to the relocation field. */
8458 case R_PPC_PLT16_LO:
8459 case R_PPC_PLT16_HI:
8460 case R_PPC_PLT16_HA:
8463 plt_list = &h->plt.plist;
8464 else if (ifunc != NULL)
8466 else if (local_got_offsets != NULL)
8468 struct plt_entry **local_plt;
8469 local_plt = (struct plt_entry **) (local_got_offsets
8470 + symtab_hdr->sh_info);
8471 plt_list = local_plt + r_symndx;
8473 unresolved_reloc = TRUE;
8474 if (plt_list != NULL)
8476 struct plt_entry *ent;
8478 ent = find_plt_ent (plt_list, got2,
8479 bfd_link_pic (info) ? addend : 0);
8480 if (ent != NULL && ent->plt.offset != (bfd_vma) -1)
8484 unresolved_reloc = FALSE;
8485 plt = htab->elf.splt;
8486 if (!htab->elf.dynamic_sections_created
8488 || h->dynindx == -1)
8491 plt = htab->elf.iplt;
8493 plt = htab->pltlocal;
8495 relocation = (plt->output_section->vma
8496 + plt->output_offset
8498 if (bfd_link_pic (info))
8502 if (ent->addend >= 32768)
8504 + ent->sec->output_section->vma
8505 + ent->sec->output_offset);
8507 got = SYM_VAL (htab->elf.hgot);
8515 /* Relocate against _SDA_BASE_. */
8516 case R_PPC_SDAREL16:
8519 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8522 || sec->output_section == NULL
8523 || !is_static_defined (sda))
8525 unresolved_reloc = TRUE;
8528 addend -= SYM_VAL (sda);
8530 name = bfd_get_section_name (output_bfd, sec->output_section);
8531 if (!(strcmp (name, ".sdata") == 0
8532 || strcmp (name, ".sbss") == 0))
8535 /* xgettext:c-format */
8536 (_("%pB: the target (%s) of a %s relocation is "
8537 "in the wrong output section (%s)"),
8546 /* Relocate against _SDA2_BASE_. */
8547 case R_PPC_EMB_SDA2REL:
8550 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8553 || sec->output_section == NULL
8554 || !is_static_defined (sda))
8556 unresolved_reloc = TRUE;
8559 addend -= SYM_VAL (sda);
8561 name = bfd_get_section_name (output_bfd, sec->output_section);
8562 if (!(strcmp (name, ".sdata2") == 0
8563 || strcmp (name, ".sbss2") == 0))
8566 /* xgettext:c-format */
8567 (_("%pB: the target (%s) of a %s relocation is "
8568 "in the wrong output section (%s)"),
8577 case R_PPC_VLE_LO16A:
8578 relocation = relocation + addend;
8579 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8580 contents + rel->r_offset, relocation,
8581 split16a_type, htab->params->vle_reloc_fixup);
8584 case R_PPC_VLE_LO16D:
8585 relocation = relocation + addend;
8586 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8587 contents + rel->r_offset, relocation,
8588 split16d_type, htab->params->vle_reloc_fixup);
8591 case R_PPC_VLE_HI16A:
8592 relocation = (relocation + addend) >> 16;
8593 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8594 contents + rel->r_offset, relocation,
8595 split16a_type, htab->params->vle_reloc_fixup);
8598 case R_PPC_VLE_HI16D:
8599 relocation = (relocation + addend) >> 16;
8600 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8601 contents + rel->r_offset, relocation,
8602 split16d_type, htab->params->vle_reloc_fixup);
8605 case R_PPC_VLE_HA16A:
8606 relocation = (relocation + addend + 0x8000) >> 16;
8607 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8608 contents + rel->r_offset, relocation,
8609 split16a_type, htab->params->vle_reloc_fixup);
8612 case R_PPC_VLE_HA16D:
8613 relocation = (relocation + addend + 0x8000) >> 16;
8614 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8615 contents + rel->r_offset, relocation,
8616 split16d_type, htab->params->vle_reloc_fixup);
8619 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8620 case R_PPC_EMB_SDA21:
8621 case R_PPC_VLE_SDA21:
8622 case R_PPC_EMB_RELSDA:
8623 case R_PPC_VLE_SDA21_LO:
8628 struct elf_link_hash_entry *sda = NULL;
8630 if (sec == NULL || sec->output_section == NULL)
8632 unresolved_reloc = TRUE;
8636 name = bfd_get_section_name (output_bfd, sec->output_section);
8637 if (strcmp (name, ".sdata") == 0
8638 || strcmp (name, ".sbss") == 0)
8641 sda = htab->sdata[0].sym;
8643 else if (strcmp (name, ".sdata2") == 0
8644 || strcmp (name, ".sbss2") == 0)
8647 sda = htab->sdata[1].sym;
8649 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8650 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8657 /* xgettext:c-format */
8658 (_("%pB: the target (%s) of a %s relocation is "
8659 "in the wrong output section (%s)"),
8665 bfd_set_error (bfd_error_bad_value);
8672 if (!is_static_defined (sda))
8674 unresolved_reloc = TRUE;
8677 addend -= SYM_VAL (sda);
8680 if (r_type == R_PPC_EMB_RELSDA)
8683 /* The PowerPC Embedded Application Binary Interface
8684 version 1.0 insanely chose to specify R_PPC_EMB_SDA21
8685 operating on a 24-bit field at r_offset. GNU as and
8686 GNU ld have always assumed R_PPC_EMB_SDA21 operates on
8687 a 32-bit bit insn at r_offset. Cope with object file
8688 producers that possibly comply with the EABI in
8689 generating an odd r_offset for big-endian objects. */
8690 if (r_type == R_PPC_EMB_SDA21)
8691 rel->r_offset &= ~1;
8693 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8695 && (r_type == R_PPC_VLE_SDA21
8696 || r_type == R_PPC_VLE_SDA21_LO))
8698 relocation = relocation + addend;
8701 /* Force e_li insn, keeping RT from original insn. */
8705 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8706 /* Top 4 bits of value to 17..20. */
8707 insn |= (relocation & 0xf0000) >> 5;
8708 /* Next 5 bits of the value to 11..15. */
8709 insn |= (relocation & 0xf800) << 5;
8710 /* And the final 11 bits of the value to bits 21 to 31. */
8711 insn |= relocation & 0x7ff;
8713 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8715 if (r_type == R_PPC_VLE_SDA21
8716 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8720 /* Fill in register field. */
8721 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8722 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8726 case R_PPC_VLE_SDAREL_LO16A:
8727 case R_PPC_VLE_SDAREL_LO16D:
8728 case R_PPC_VLE_SDAREL_HI16A:
8729 case R_PPC_VLE_SDAREL_HI16D:
8730 case R_PPC_VLE_SDAREL_HA16A:
8731 case R_PPC_VLE_SDAREL_HA16D:
8735 struct elf_link_hash_entry *sda = NULL;
8737 if (sec == NULL || sec->output_section == NULL)
8739 unresolved_reloc = TRUE;
8743 name = bfd_get_section_name (output_bfd, sec->output_section);
8744 if (strcmp (name, ".sdata") == 0
8745 || strcmp (name, ".sbss") == 0)
8746 sda = htab->sdata[0].sym;
8747 else if (strcmp (name, ".sdata2") == 0
8748 || strcmp (name, ".sbss2") == 0)
8749 sda = htab->sdata[1].sym;
8753 /* xgettext:c-format */
8754 (_("%pB: the target (%s) of a %s relocation is "
8755 "in the wrong output section (%s)"),
8761 bfd_set_error (bfd_error_bad_value);
8766 if (sda == NULL || !is_static_defined (sda))
8768 unresolved_reloc = TRUE;
8771 value = relocation + addend - SYM_VAL (sda);
8773 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8774 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8775 contents + rel->r_offset, value,
8777 htab->params->vle_reloc_fixup);
8778 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8779 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8780 contents + rel->r_offset, value,
8782 htab->params->vle_reloc_fixup);
8783 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8785 value = value >> 16;
8786 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8787 contents + rel->r_offset, value,
8789 htab->params->vle_reloc_fixup);
8791 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8793 value = value >> 16;
8794 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8795 contents + rel->r_offset, value,
8797 htab->params->vle_reloc_fixup);
8799 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8801 value = (value + 0x8000) >> 16;
8802 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8803 contents + rel->r_offset, value,
8805 htab->params->vle_reloc_fixup);
8807 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8809 value = (value + 0x8000) >> 16;
8810 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8811 contents + rel->r_offset, value,
8813 htab->params->vle_reloc_fixup);
8818 case R_PPC_VLE_ADDR20:
8819 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
8822 /* Relocate against the beginning of the section. */
8824 case R_PPC_SECTOFF_LO:
8825 case R_PPC_SECTOFF_HI:
8826 case R_PPC_SECTOFF_HA:
8827 if (sec == NULL || sec->output_section == NULL)
8829 unresolved_reloc = TRUE;
8832 addend -= sec->output_section->vma;
8835 /* Negative relocations. */
8836 case R_PPC_EMB_NADDR32:
8837 case R_PPC_EMB_NADDR16:
8838 case R_PPC_EMB_NADDR16_LO:
8839 case R_PPC_EMB_NADDR16_HI:
8840 case R_PPC_EMB_NADDR16_HA:
8841 addend -= 2 * relocation;
8845 case R_PPC_GLOB_DAT:
8846 case R_PPC_JMP_SLOT:
8847 case R_PPC_RELATIVE:
8848 case R_PPC_IRELATIVE:
8850 case R_PPC_PLTREL32:
8852 case R_PPC_EMB_RELSEC16:
8853 case R_PPC_EMB_RELST_LO:
8854 case R_PPC_EMB_RELST_HI:
8855 case R_PPC_EMB_RELST_HA:
8856 case R_PPC_EMB_BIT_FLD:
8857 /* xgettext:c-format */
8858 _bfd_error_handler (_("%pB: %s unsupported"),
8859 input_bfd, howto->name);
8861 bfd_set_error (bfd_error_invalid_operation);
8872 if (unresolved_reloc)
8874 bfd_byte *p = contents + rel->r_offset;
8875 unsigned int insn = bfd_get_32 (input_bfd, p);
8877 bfd_put_32 (input_bfd, B | insn, p);
8878 unresolved_reloc = save_unresolved_reloc;
8879 r_type = R_PPC_REL24;
8880 howto = ppc_elf_howto_table[r_type];
8882 else if (htab->plt_type != PLT_NEW)
8883 info->callbacks->einfo
8884 (_("%X%P: %H: %s relocation unsupported for bss-plt\n"),
8885 input_bfd, input_section, rel->r_offset,
8890 case R_PPC_PLT16_HA:
8891 case R_PPC_PLT16_LO:
8892 if (unresolved_reloc)
8894 bfd_byte *p = contents + (rel->r_offset & ~3);
8895 bfd_put_32 (input_bfd, NOP, p);
8896 unresolved_reloc = FALSE;
8897 r_type = R_PPC_NONE;
8898 howto = ppc_elf_howto_table[r_type];
8900 else if (htab->plt_type != PLT_NEW)
8901 info->callbacks->einfo
8902 (_("%X%P: %H: %s relocation unsupported for bss-plt\n"),
8903 input_bfd, input_section, rel->r_offset,
8908 /* Do any further special processing. */
8914 case R_PPC_ADDR16_HA:
8915 case R_PPC_REL16_HA:
8916 case R_PPC_REL16DX_HA:
8917 case R_PPC_SECTOFF_HA:
8918 case R_PPC_TPREL16_HA:
8919 case R_PPC_DTPREL16_HA:
8920 case R_PPC_EMB_NADDR16_HA:
8921 case R_PPC_EMB_RELST_HA:
8922 /* It's just possible that this symbol is a weak symbol
8923 that's not actually defined anywhere. In that case,
8924 'sec' would be NULL, and we should leave the symbol
8925 alone (it will be set to zero elsewhere in the link). */
8930 case R_PPC_PLT16_HA:
8931 case R_PPC_GOT16_HA:
8932 case R_PPC_GOT_TLSGD16_HA:
8933 case R_PPC_GOT_TLSLD16_HA:
8934 case R_PPC_GOT_TPREL16_HA:
8935 case R_PPC_GOT_DTPREL16_HA:
8936 /* Add 0x10000 if sign bit in 0:15 is set.
8937 Bits 0:15 are not used. */
8942 case R_PPC_ADDR16_LO:
8944 case R_PPC_GOT16_LO:
8945 case R_PPC_SDAREL16:
8947 case R_PPC_SECTOFF_LO:
8948 case R_PPC_DTPREL16:
8949 case R_PPC_DTPREL16_LO:
8951 case R_PPC_TPREL16_LO:
8952 case R_PPC_GOT_TLSGD16:
8953 case R_PPC_GOT_TLSGD16_LO:
8954 case R_PPC_GOT_TLSLD16:
8955 case R_PPC_GOT_TLSLD16_LO:
8956 case R_PPC_GOT_DTPREL16:
8957 case R_PPC_GOT_DTPREL16_LO:
8958 case R_PPC_GOT_TPREL16:
8959 case R_PPC_GOT_TPREL16_LO:
8961 /* The 32-bit ABI lacks proper relocations to deal with
8962 certain 64-bit instructions. Prevent damage to bits
8963 that make up part of the insn opcode. */
8964 unsigned int insn, mask, lobit;
8966 insn = bfd_get_32 (input_bfd,
8967 contents + rel->r_offset - d_offset);
8969 if (is_insn_ds_form (insn))
8971 else if (is_insn_dq_form (insn))
8975 relocation += addend;
8976 addend = insn & mask;
8977 lobit = mask & relocation;
8980 relocation ^= lobit;
8981 info->callbacks->einfo
8982 /* xgettext:c-format */
8983 (_("%H: error: %s against `%s' not a multiple of %u\n"),
8984 input_bfd, input_section, rel->r_offset,
8985 howto->name, sym_name, mask + 1);
8986 bfd_set_error (bfd_error_bad_value);
8994 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8995 "offset = %ld, addend = %ld\n",
9000 (long) rel->r_offset,
9004 if (unresolved_reloc
9005 && !((input_section->flags & SEC_DEBUGGING) != 0
9007 && _bfd_elf_section_offset (output_bfd, info, input_section,
9008 rel->r_offset) != (bfd_vma) -1)
9010 info->callbacks->einfo
9011 /* xgettext:c-format */
9012 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9013 input_bfd, input_section, rel->r_offset,
9019 /* 16-bit fields in insns mostly have signed values, but a
9020 few insns have 16-bit unsigned values. Really, we should
9021 have different reloc types. */
9022 if (howto->complain_on_overflow != complain_overflow_dont
9023 && howto->dst_mask == 0xffff
9024 && (input_section->flags & SEC_CODE) != 0)
9026 enum complain_overflow complain = complain_overflow_signed;
9028 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9032 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9033 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9034 complain = complain_overflow_bitfield;
9035 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9036 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9037 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9038 complain = complain_overflow_unsigned;
9040 if (howto->complain_on_overflow != complain)
9043 alt_howto.complain_on_overflow = complain;
9048 if (r_type == R_PPC_REL16DX_HA)
9050 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9051 if (rel->r_offset + 4 > input_section->size)
9052 r = bfd_reloc_outofrange;
9057 relocation += addend;
9058 relocation -= (rel->r_offset
9059 + input_section->output_offset
9060 + input_section->output_section->vma);
9062 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9064 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9065 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9070 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9071 rel->r_offset, relocation, addend);
9073 if (r != bfd_reloc_ok)
9075 if (r == bfd_reloc_overflow)
9078 /* On code like "if (foo) foo();" don't report overflow
9079 on a branch to zero when foo is undefined. */
9082 && (h->root.type == bfd_link_hash_undefweak
9083 || h->root.type == bfd_link_hash_undefined)
9084 && is_branch_reloc (r_type)))
9085 info->callbacks->reloc_overflow
9086 (info, (h ? &h->root : NULL), sym_name, howto->name,
9087 rel->r_addend, input_bfd, input_section, rel->r_offset);
9091 info->callbacks->einfo
9092 /* xgettext:c-format */
9093 (_("%H: %s reloc against `%s': error %d\n"),
9094 input_bfd, input_section, rel->r_offset,
9095 howto->name, sym_name, (int) r);
9106 Elf_Internal_Shdr *rel_hdr;
9107 size_t deleted = rel - wrel;
9109 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9110 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9111 if (rel_hdr->sh_size == 0)
9113 /* It is too late to remove an empty reloc section. Leave
9115 ??? What is wrong with an empty section??? */
9116 rel_hdr->sh_size = rel_hdr->sh_entsize;
9121 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9122 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9123 input_section->reloc_count -= deleted;
9127 fprintf (stderr, "\n");
9130 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9131 && input_section->size != input_section->rawsize
9132 && (strcmp (input_section->output_section->name, ".init") == 0
9133 || strcmp (input_section->output_section->name, ".fini") == 0))
9135 /* Branch around the trampolines. */
9136 unsigned int insn = B + input_section->size - input_section->rawsize;
9137 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9140 if (htab->params->ppc476_workaround
9141 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9142 && (!bfd_link_relocatable (info)
9143 || (input_section->output_section->alignment_power
9144 >= htab->params->pagesize_p2)))
9146 bfd_vma start_addr, end_addr, addr;
9147 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9149 if (relax_info->workaround_size != 0)
9155 bfd_put_32 (input_bfd, BA, fill);
9156 p = contents + input_section->size - relax_info->workaround_size;
9157 n = relax_info->workaround_size >> 2;
9160 memcpy (p, fill, 4);
9165 /* The idea is: Replace the last instruction on a page with a
9166 branch to a patch area. Put the insn there followed by a
9167 branch back to the next page. Complicated a little by
9168 needing to handle moved conditional branches, and by not
9169 wanting to touch data-in-text. */
9171 start_addr = (input_section->output_section->vma
9172 + input_section->output_offset);
9173 end_addr = (start_addr + input_section->size
9174 - relax_info->workaround_size);
9175 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9179 bfd_vma offset = addr - start_addr;
9180 Elf_Internal_Rela *lo, *hi;
9181 bfd_boolean is_data;
9182 bfd_vma patch_off, patch_addr;
9185 /* Do we have a data reloc at this offset? If so, leave
9193 rel = lo + (hi - lo) / 2;
9194 if (rel->r_offset < offset)
9196 else if (rel->r_offset > offset + 3)
9200 switch (ELF32_R_TYPE (rel->r_info))
9217 /* Some instructions can be left alone too. Unconditional
9218 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9219 avoid the icache failure.
9221 The problem occurs due to prefetch across a page boundary
9222 where stale instructions can be fetched from the next
9223 page, and the mechanism for flushing these bad
9224 instructions fails under certain circumstances. The
9225 unconditional branches:
9226 1) Branch: b, bl, ba, bla,
9227 2) Branch Conditional: bc, bca, bcl, bcla,
9228 3) Branch Conditional to Link Register: bclr, bclrl,
9229 where (2) and (3) have BO=0x14 making them unconditional,
9230 prevent the bad prefetch because the prefetch itself is
9231 affected by these instructions. This happens even if the
9232 instruction is not executed.
9237 . addi 9,9,new_page@l
9244 The bctr is not predicted taken due to ctr not being
9245 ready, so prefetch continues on past the bctr into the
9246 new page which might have stale instructions. If they
9247 fail to be flushed, then they will be executed after the
9248 bctr executes. Either of the following modifications
9249 prevent the bad prefetch from happening in the first
9252 . lis 9,new_page@ha lis 9,new_page@ha
9253 . addi 9,9,new_page@l addi 9,9,new_page@l
9256 . nop b somewhere_else
9257 . b somewhere_else nop
9258 . new_page: new_page:
9260 insn = bfd_get_32 (input_bfd, contents + offset);
9261 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9262 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9263 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9264 || ((insn & (0x3f << 26)) == (19u << 26)
9265 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9266 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9269 patch_addr = (start_addr + input_section->size
9270 - relax_info->workaround_size);
9271 patch_addr = (patch_addr + 15) & -16;
9272 patch_off = patch_addr - start_addr;
9273 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9276 && rel->r_offset >= offset
9277 && rel->r_offset < offset + 4)
9281 /* If the insn we are patching had a reloc, adjust the
9282 reloc r_offset so that the reloc applies to the moved
9283 location. This matters for -r and --emit-relocs. */
9284 if (rel + 1 != relend)
9286 Elf_Internal_Rela tmp = *rel;
9288 /* Keep the relocs sorted by r_offset. */
9289 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9292 relend[-1].r_offset += patch_off - offset;
9294 /* Adjust REL16 addends too. */
9295 switch (ELF32_R_TYPE (relend[-1].r_info))
9298 case R_PPC_REL16_LO:
9299 case R_PPC_REL16_HI:
9300 case R_PPC_REL16_HA:
9301 relend[-1].r_addend += patch_off - offset;
9307 /* If we are building a PIE or shared library with
9308 non-PIC objects, perhaps we had a dynamic reloc too?
9309 If so, the dynamic reloc must move with the insn. */
9310 sreloc = elf_section_data (input_section)->sreloc;
9313 Elf32_External_Rela *slo, *shi, *srelend;
9316 slo = (Elf32_External_Rela *) sreloc->contents;
9317 shi = srelend = slo + sreloc->reloc_count;
9318 soffset = (offset + input_section->output_section->vma
9319 + input_section->output_offset);
9322 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9323 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9325 if (outrel.r_offset < soffset)
9327 else if (outrel.r_offset > soffset + 3)
9331 if (srel + 1 != srelend)
9333 memmove (srel, srel + 1,
9334 (srelend - (srel + 1)) * sizeof (*srel));
9337 outrel.r_offset += patch_off - offset;
9338 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9348 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9349 && (insn & 2) == 0 /* relative */)
9351 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9353 delta += offset - patch_off;
9354 if (bfd_link_relocatable (info) && rel != NULL)
9356 if (!bfd_link_relocatable (info) && rel != NULL)
9358 enum elf_ppc_reloc_type r_type;
9360 r_type = ELF32_R_TYPE (relend[-1].r_info);
9361 if (r_type == R_PPC_REL14_BRTAKEN)
9362 insn |= BRANCH_PREDICT_BIT;
9363 else if (r_type == R_PPC_REL14_BRNTAKEN)
9364 insn &= ~BRANCH_PREDICT_BIT;
9366 BFD_ASSERT (r_type == R_PPC_REL14);
9368 if ((r_type == R_PPC_REL14_BRTAKEN
9369 || r_type == R_PPC_REL14_BRNTAKEN)
9370 && delta + 0x8000 < 0x10000
9371 && (bfd_signed_vma) delta < 0)
9372 insn ^= BRANCH_PREDICT_BIT;
9374 if (delta + 0x8000 < 0x10000)
9376 bfd_put_32 (input_bfd,
9377 (insn & ~0xfffc) | (delta & 0xfffc),
9378 contents + patch_off);
9380 bfd_put_32 (input_bfd,
9381 B | ((offset + 4 - patch_off) & 0x3fffffc),
9382 contents + patch_off);
9389 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9391 relend[-1].r_offset += 8;
9392 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9394 bfd_put_32 (input_bfd,
9395 (insn & ~0xfffc) | 8,
9396 contents + patch_off);
9398 bfd_put_32 (input_bfd,
9399 B | ((offset + 4 - patch_off) & 0x3fffffc),
9400 contents + patch_off);
9402 bfd_put_32 (input_bfd,
9403 B | ((delta - 8) & 0x3fffffc),
9404 contents + patch_off);
9410 bfd_put_32 (input_bfd, insn, contents + patch_off);
9412 bfd_put_32 (input_bfd,
9413 B | ((offset + 4 - patch_off) & 0x3fffffc),
9414 contents + patch_off);
9417 BFD_ASSERT (patch_off <= input_section->size);
9418 relax_info->workaround_size = input_section->size - patch_off;
9425 /* Write out the PLT relocs and entries for H. */
9428 write_global_sym_plt (struct elf_link_hash_entry *h, void *inf)
9430 struct bfd_link_info *info = (struct bfd_link_info *) inf;
9431 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9432 struct plt_entry *ent;
9433 bfd_boolean doneone;
9436 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9437 if (ent->plt.offset != (bfd_vma) -1)
9441 Elf_Internal_Rela rela;
9443 bfd_vma reloc_index;
9444 asection *plt = htab->elf.splt;
9445 asection *relplt = htab->elf.srelplt;
9447 if (htab->plt_type == PLT_NEW
9448 || !htab->elf.dynamic_sections_created
9449 || h->dynindx == -1)
9450 reloc_index = ent->plt.offset / 4;
9453 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9454 / htab->plt_slot_size);
9455 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9456 && htab->plt_type == PLT_OLD)
9457 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9460 /* This symbol has an entry in the procedure linkage table.
9462 if (htab->plt_type == PLT_VXWORKS
9463 && htab->elf.dynamic_sections_created
9464 && h->dynindx != -1)
9467 const bfd_vma *plt_entry;
9469 /* The first three entries in .got.plt are reserved. */
9470 got_offset = (reloc_index + 3) * 4;
9472 /* Use the right PLT. */
9473 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9474 : ppc_elf_vxworks_plt_entry;
9476 /* Fill in the .plt on VxWorks. */
9477 if (bfd_link_pic (info))
9479 bfd_put_32 (info->output_bfd,
9480 plt_entry[0] | PPC_HA (got_offset),
9481 plt->contents + ent->plt.offset + 0);
9482 bfd_put_32 (info->output_bfd,
9483 plt_entry[1] | PPC_LO (got_offset),
9484 plt->contents + ent->plt.offset + 4);
9488 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9490 bfd_put_32 (info->output_bfd,
9491 plt_entry[0] | PPC_HA (got_loc),
9492 plt->contents + ent->plt.offset + 0);
9493 bfd_put_32 (info->output_bfd,
9494 plt_entry[1] | PPC_LO (got_loc),
9495 plt->contents + ent->plt.offset + 4);
9498 bfd_put_32 (info->output_bfd, plt_entry[2],
9499 plt->contents + ent->plt.offset + 8);
9500 bfd_put_32 (info->output_bfd, plt_entry[3],
9501 plt->contents + ent->plt.offset + 12);
9503 /* This instruction is an immediate load. The value loaded is
9504 the byte offset of the R_PPC_JMP_SLOT relocation from the
9505 start of the .rela.plt section. The value is stored in the
9506 low-order 16 bits of the load instruction. */
9507 /* NOTE: It appears that this is now an index rather than a
9508 prescaled offset. */
9509 bfd_put_32 (info->output_bfd,
9510 plt_entry[4] | reloc_index,
9511 plt->contents + ent->plt.offset + 16);
9512 /* This instruction is a PC-relative branch whose target is
9513 the start of the PLT section. The address of this branch
9514 instruction is 20 bytes beyond the start of this PLT entry.
9515 The address is encoded in bits 6-29, inclusive. The value
9516 stored is right-shifted by two bits, permitting a 26-bit
9518 bfd_put_32 (info->output_bfd,
9520 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9521 plt->contents + ent->plt.offset + 20);
9522 bfd_put_32 (info->output_bfd, plt_entry[6],
9523 plt->contents + ent->plt.offset + 24);
9524 bfd_put_32 (info->output_bfd, plt_entry[7],
9525 plt->contents + ent->plt.offset + 28);
9527 /* Fill in the GOT entry corresponding to this PLT slot with
9528 the address immediately after the "bctr" instruction
9529 in this PLT entry. */
9530 bfd_put_32 (info->output_bfd, (plt->output_section->vma
9531 + plt->output_offset
9532 + ent->plt.offset + 16),
9533 htab->elf.sgotplt->contents + got_offset);
9535 if (!bfd_link_pic (info))
9537 /* Fill in a couple of entries in .rela.plt.unloaded. */
9538 loc = htab->srelplt2->contents
9539 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9540 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9541 * sizeof (Elf32_External_Rela));
9543 /* Provide the @ha relocation for the first instruction. */
9544 rela.r_offset = (plt->output_section->vma
9545 + plt->output_offset
9546 + ent->plt.offset + 2);
9547 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9549 rela.r_addend = got_offset;
9550 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9551 loc += sizeof (Elf32_External_Rela);
9553 /* Provide the @l relocation for the second instruction. */
9554 rela.r_offset = (plt->output_section->vma
9555 + plt->output_offset
9556 + ent->plt.offset + 6);
9557 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9559 rela.r_addend = got_offset;
9560 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9561 loc += sizeof (Elf32_External_Rela);
9563 /* Provide a relocation for the GOT entry corresponding to this
9564 PLT slot. Point it at the middle of the .plt entry. */
9565 rela.r_offset = (htab->elf.sgotplt->output_section->vma
9566 + htab->elf.sgotplt->output_offset
9568 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9570 rela.r_addend = ent->plt.offset + 16;
9571 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9574 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9575 In particular, the offset for the relocation is not the
9576 address of the PLT entry for this function, as specified
9577 by the ABI. Instead, the offset is set to the address of
9578 the GOT slot for this function. See EABI 4.4.4.1. */
9579 rela.r_offset = (htab->elf.sgotplt->output_section->vma
9580 + htab->elf.sgotplt->output_offset
9587 if (!htab->elf.dynamic_sections_created
9588 || h->dynindx == -1)
9590 if (h->type == STT_GNU_IFUNC)
9592 plt = htab->elf.iplt;
9593 relplt = htab->elf.irelplt;
9597 plt = htab->pltlocal;
9598 relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL;
9601 && (h->root.type == bfd_link_hash_defined
9602 || h->root.type == bfd_link_hash_defweak))
9603 rela.r_addend = SYM_VAL (h);
9608 loc = plt->contents + ent->plt.offset;
9609 bfd_put_32 (info->output_bfd, rela.r_addend, loc);
9613 rela.r_offset = (plt->output_section->vma
9614 + plt->output_offset
9617 if (htab->plt_type == PLT_OLD
9618 || !htab->elf.dynamic_sections_created
9619 || h->dynindx == -1)
9621 /* We don't need to fill in the .plt. The ppc dynamic
9622 linker will fill it in. */
9626 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9627 + htab->glink->output_section->vma
9628 + htab->glink->output_offset);
9629 bfd_put_32 (info->output_bfd, val,
9630 plt->contents + ent->plt.offset);
9637 /* Fill in the entry in the .rela.plt section. */
9638 if (!htab->elf.dynamic_sections_created
9639 || h->dynindx == -1)
9641 if (h->type == STT_GNU_IFUNC)
9642 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9644 rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9645 loc = relplt->contents + (relplt->reloc_count++
9646 * sizeof (Elf32_External_Rela));
9647 htab->local_ifunc_resolver = 1;
9651 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9652 loc = relplt->contents + (reloc_index
9653 * sizeof (Elf32_External_Rela));
9654 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
9655 htab->maybe_local_ifunc_resolver = 1;
9657 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9662 if (htab->plt_type == PLT_NEW
9663 || !htab->elf.dynamic_sections_created
9664 || h->dynindx == -1)
9667 asection *plt = htab->elf.splt;
9669 if (!htab->elf.dynamic_sections_created
9670 || h->dynindx == -1)
9672 if (h->type == STT_GNU_IFUNC)
9673 plt = htab->elf.iplt;
9678 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9679 write_glink_stub (h, ent, plt, p, info);
9681 if (!bfd_link_pic (info))
9682 /* We only need one non-PIC glink stub. */
9691 /* Finish up PLT handling. */
9694 ppc_finish_symbols (struct bfd_link_info *info)
9696 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9702 elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info);
9704 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9706 bfd_vma *local_got, *end_local_got;
9707 struct plt_entry **local_plt, **lplt, **end_local_plt;
9708 Elf_Internal_Shdr *symtab_hdr;
9709 bfd_size_type locsymcount;
9710 Elf_Internal_Sym *local_syms = NULL;
9711 struct plt_entry *ent;
9713 if (!is_ppc_elf (ibfd))
9716 local_got = elf_local_got_offsets (ibfd);
9720 symtab_hdr = &elf_symtab_hdr (ibfd);
9721 locsymcount = symtab_hdr->sh_info;
9722 end_local_got = local_got + locsymcount;
9723 local_plt = (struct plt_entry **) end_local_got;
9724 end_local_plt = local_plt + locsymcount;
9725 for (lplt = local_plt; lplt < end_local_plt; ++lplt)
9726 for (ent = *lplt; ent != NULL; ent = ent->next)
9728 if (ent->plt.offset != (bfd_vma) -1)
9730 Elf_Internal_Sym *sym;
9732 asection *plt, *relplt;
9735 Elf_Internal_Rela rela;
9738 if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms,
9739 lplt - local_plt, ibfd))
9741 if (local_syms != NULL
9742 && symtab_hdr->contents != (unsigned char *) local_syms)
9747 val = sym->st_value;
9748 if (sym_sec != NULL && sym_sec->output_section != NULL)
9749 val += sym_sec->output_offset + sym_sec->output_section->vma;
9751 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9753 htab->local_ifunc_resolver = 1;
9754 plt = htab->elf.iplt;
9755 relplt = htab->elf.irelplt;
9756 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9760 plt = htab->pltlocal;
9761 if (bfd_link_pic (info))
9763 relplt = htab->relpltlocal;
9764 rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9768 loc = plt->contents + ent->plt.offset;
9769 bfd_put_32 (info->output_bfd, val, loc);
9774 rela.r_offset = (ent->plt.offset
9775 + plt->output_offset
9776 + plt->output_section->vma);
9777 rela.r_addend = val;
9778 loc = relplt->contents + (relplt->reloc_count++
9779 * sizeof (Elf32_External_Rela));
9780 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9782 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9783 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
9787 if (local_syms != NULL
9788 && symtab_hdr->contents != (unsigned char *) local_syms)
9790 if (!info->keep_memory)
9793 symtab_hdr->contents = (unsigned char *) local_syms;
9799 /* Finish up dynamic symbol handling. We set the contents of various
9800 dynamic sections here. */
9803 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9804 struct bfd_link_info *info,
9805 struct elf_link_hash_entry *h,
9806 Elf_Internal_Sym *sym)
9808 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9809 struct plt_entry *ent;
9812 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9813 h->root.root.string);
9817 || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info)))
9818 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9819 if (ent->plt.offset != (bfd_vma) -1)
9821 if (!h->def_regular)
9823 /* Mark the symbol as undefined, rather than as
9824 defined in the .plt section. Leave the value if
9825 there were any relocations where pointer equality
9826 matters (this is a clue for the dynamic linker, to
9827 make function pointer comparisons work between an
9828 application and shared library), otherwise set it
9830 sym->st_shndx = SHN_UNDEF;
9831 if (!h->pointer_equality_needed)
9833 else if (!h->ref_regular_nonweak)
9835 /* This breaks function pointer comparisons, but
9836 that is better than breaking tests for a NULL
9837 function pointer. */
9843 /* Set the value of ifunc symbols in a non-pie
9844 executable to the glink entry. This is to avoid
9845 text relocations. We can't do this for ifunc in
9846 allocate_dynrelocs, as we do for normal dynamic
9847 function symbols with plt entries, because we need
9848 to keep the original value around for the ifunc
9851 = (_bfd_elf_section_from_bfd_section
9852 (info->output_bfd, htab->glink->output_section));
9853 sym->st_value = (ent->glink_offset
9854 + htab->glink->output_offset
9855 + htab->glink->output_section->vma);
9863 Elf_Internal_Rela rela;
9866 /* This symbols needs a copy reloc. Set it up. */
9869 fprintf (stderr, ", copy");
9872 BFD_ASSERT (h->dynindx != -1);
9874 if (ppc_elf_hash_entry (h)->has_sda_refs)
9876 else if (h->root.u.def.section == htab->elf.sdynrelro)
9877 s = htab->elf.sreldynrelro;
9879 s = htab->elf.srelbss;
9880 BFD_ASSERT (s != NULL);
9882 rela.r_offset = SYM_VAL (h);
9883 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9885 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9886 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9890 fprintf (stderr, "\n");
9896 static enum elf_reloc_type_class
9897 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9898 const asection *rel_sec,
9899 const Elf_Internal_Rela *rela)
9901 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9903 if (rel_sec == htab->elf.irelplt)
9904 return reloc_class_ifunc;
9906 switch (ELF32_R_TYPE (rela->r_info))
9908 case R_PPC_RELATIVE:
9909 return reloc_class_relative;
9910 case R_PPC_JMP_SLOT:
9911 return reloc_class_plt;
9913 return reloc_class_copy;
9915 return reloc_class_normal;
9919 /* Finish up the dynamic sections. */
9922 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9923 struct bfd_link_info *info)
9926 struct ppc_elf_link_hash_table *htab;
9929 bfd_boolean ret = TRUE;
9932 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9935 htab = ppc_elf_hash_table (info);
9936 dynobj = htab->elf.dynobj;
9937 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9940 if (htab->elf.hgot != NULL)
9941 got = SYM_VAL (htab->elf.hgot);
9943 if (htab->elf.dynamic_sections_created)
9945 Elf32_External_Dyn *dyncon, *dynconend;
9947 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
9949 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9950 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9951 for (; dyncon < dynconend; dyncon++)
9953 Elf_Internal_Dyn dyn;
9956 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9961 if (htab->is_vxworks)
9962 s = htab->elf.sgotplt;
9965 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9969 dyn.d_un.d_val = htab->elf.srelplt->size;
9973 s = htab->elf.srelplt;
9974 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9978 dyn.d_un.d_ptr = got;
9982 if (htab->local_ifunc_resolver)
9983 info->callbacks->einfo
9984 (_("%X%P: text relocations and GNU indirect "
9985 "functions will result in a segfault at runtime\n"));
9986 else if (htab->maybe_local_ifunc_resolver)
9987 info->callbacks->einfo
9988 (_("%P: warning: text relocations and GNU indirect "
9989 "functions may result in a segfault at runtime\n"));
9993 if (htab->is_vxworks
9994 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9999 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10003 if (htab->elf.sgot != NULL
10004 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10006 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10007 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10009 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10011 p += htab->elf.hgot->root.u.def.value;
10012 if (htab->plt_type == PLT_OLD)
10014 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10015 so that a function can easily find the address of
10016 _GLOBAL_OFFSET_TABLE_. */
10017 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10018 < htab->elf.hgot->root.u.def.section->size);
10019 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10024 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10025 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10026 < htab->elf.hgot->root.u.def.section->size);
10027 bfd_put_32 (output_bfd, val, p);
10032 /* xgettext:c-format */
10033 _bfd_error_handler (_("%s not defined in linker created %pA"),
10034 htab->elf.hgot->root.root.string,
10035 (htab->elf.sgotplt != NULL
10036 ? htab->elf.sgotplt : htab->elf.sgot));
10037 bfd_set_error (bfd_error_bad_value);
10041 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10044 /* Fill in the first entry in the VxWorks procedure linkage table. */
10045 if (htab->is_vxworks
10046 && htab->elf.splt != NULL
10047 && htab->elf.splt->size != 0
10048 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10050 asection *splt = htab->elf.splt;
10051 /* Use the right PLT. */
10052 const bfd_vma *plt_entry = (bfd_link_pic (info)
10053 ? ppc_elf_vxworks_pic_plt0_entry
10054 : ppc_elf_vxworks_plt0_entry);
10056 if (!bfd_link_pic (info))
10058 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10060 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10061 splt->contents + 0);
10062 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10063 splt->contents + 4);
10067 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10068 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10070 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10071 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10072 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10073 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10074 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10075 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10077 if (! bfd_link_pic (info))
10079 Elf_Internal_Rela rela;
10082 loc = htab->srelplt2->contents;
10084 /* Output the @ha relocation for the first instruction. */
10085 rela.r_offset = (htab->elf.splt->output_section->vma
10086 + htab->elf.splt->output_offset
10088 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10090 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10091 loc += sizeof (Elf32_External_Rela);
10093 /* Output the @l relocation for the second instruction. */
10094 rela.r_offset = (htab->elf.splt->output_section->vma
10095 + htab->elf.splt->output_offset
10097 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10099 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10100 loc += sizeof (Elf32_External_Rela);
10102 /* Fix up the remaining relocations. They may have the wrong
10103 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10104 in which symbols were output. */
10105 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10107 Elf_Internal_Rela rel;
10109 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10110 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10111 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10112 loc += sizeof (Elf32_External_Rela);
10114 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10115 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10116 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10117 loc += sizeof (Elf32_External_Rela);
10119 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10120 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10121 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10122 loc += sizeof (Elf32_External_Rela);
10127 if (htab->glink != NULL
10128 && htab->glink->contents != NULL
10129 && htab->elf.dynamic_sections_created)
10132 unsigned char *endp;
10136 * PIC glink code is the following:
10138 * # ith PLT code stub.
10139 * addis 11,30,(plt+(i-1)*4-got)@ha
10140 * lwz 11,(plt+(i-1)*4-got)@l(11)
10144 * # A table of branches, one for each plt entry.
10145 * # The idea is that the plt call stub loads ctr and r11 with these
10146 * # addresses, so (r11 - res_0) gives the plt index * 4.
10147 * res_0: b PLTresolve
10148 * res_1: b PLTresolve
10150 * # Some number of entries towards the end can be nops
10156 * addis 11,11,(1f-res_0)@ha
10159 * 1: addi 11,11,(1b-res_0)@l
10162 * sub 11,11,12 # r11 = index * 4
10163 * addis 12,12,(got+4-1b)@ha
10164 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10165 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10168 * add 11,0,11 # r11 = index * 12 = reloc offset.
10171 * Non-PIC glink code is a little simpler.
10173 * # ith PLT code stub.
10174 * lis 11,(plt+(i-1)*4)@ha
10175 * lwz 11,(plt+(i-1)*4)@l(11)
10179 * The branch table is the same, then comes
10182 * lis 12,(got+4)@ha
10183 * addis 11,11,(-res_0)@ha
10184 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10185 * addi 11,11,(-res_0)@l # r11 = index * 4
10188 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10189 * add 11,0,11 # r11 = index * 12 = reloc offset.
10193 /* Build the branch table, one for each plt entry (less one),
10194 and perhaps some padding. */
10195 p = htab->glink->contents;
10196 p += htab->glink_pltresolve;
10197 endp = htab->glink->contents;
10198 endp += htab->glink->size - GLINK_PLTRESOLVE;
10199 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10201 bfd_put_32 (output_bfd, B + endp - p, p);
10206 bfd_put_32 (output_bfd, NOP, p);
10210 res0 = (htab->glink_pltresolve
10211 + htab->glink->output_section->vma
10212 + htab->glink->output_offset);
10214 if (htab->params->ppc476_workaround)
10216 /* Ensure that a call stub at the end of a page doesn't
10217 result in prefetch over the end of the page into the
10218 glink branch table. */
10219 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10221 bfd_vma glink_start = (htab->glink->output_section->vma
10222 + htab->glink->output_offset);
10224 for (page_addr = res0 & -pagesize;
10225 page_addr > glink_start;
10226 page_addr -= pagesize)
10228 /* We have a plt call stub that may need fixing. */
10232 loc = htab->glink->contents + page_addr - 4 - glink_start;
10233 insn = bfd_get_32 (output_bfd, loc);
10236 /* By alignment, we know that there must be at least
10237 one other call stub before this one. */
10238 insn = bfd_get_32 (output_bfd, loc - 16);
10240 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10242 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10247 /* Last comes the PLTresolve stub. */
10248 endp = p + GLINK_PLTRESOLVE;
10249 if (bfd_link_pic (info))
10253 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10254 + htab->glink->output_section->vma
10255 + htab->glink->output_offset);
10257 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10259 bfd_put_32 (output_bfd, MFLR_0, p);
10261 bfd_put_32 (output_bfd, BCL_20_31, p);
10263 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10265 bfd_put_32 (output_bfd, MFLR_12, p);
10267 bfd_put_32 (output_bfd, MTLR_0, p);
10269 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10271 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10273 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10275 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10277 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10282 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10284 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10287 bfd_put_32 (output_bfd, MTCTR_0, p);
10289 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10293 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10295 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10297 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10298 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10300 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10302 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10304 bfd_put_32 (output_bfd, MTCTR_0, p);
10306 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10308 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10309 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10311 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10314 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10316 bfd_put_32 (output_bfd, BCTR, p);
10320 bfd_put_32 (output_bfd,
10321 htab->params->ppc476_workaround ? BA : NOP, p);
10324 BFD_ASSERT (p == endp);
10327 if (htab->glink_eh_frame != NULL
10328 && htab->glink_eh_frame->contents != NULL)
10330 unsigned char *p = htab->glink_eh_frame->contents;
10333 p += sizeof (glink_eh_frame_cie);
10338 /* Offset to .glink. */
10339 val = (htab->glink->output_section->vma
10340 + htab->glink->output_offset);
10341 val -= (htab->glink_eh_frame->output_section->vma
10342 + htab->glink_eh_frame->output_offset);
10343 val -= p - htab->glink_eh_frame->contents;
10344 bfd_put_32 (htab->elf.dynobj, val, p);
10346 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10347 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10348 htab->glink_eh_frame,
10349 htab->glink_eh_frame->contents))
10356 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10357 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10358 #define TARGET_BIG_SYM powerpc_elf32_vec
10359 #define TARGET_BIG_NAME "elf32-powerpc"
10360 #define ELF_ARCH bfd_arch_powerpc
10361 #define ELF_TARGET_ID PPC32_ELF_DATA
10362 #define ELF_MACHINE_CODE EM_PPC
10363 #define ELF_MAXPAGESIZE 0x10000
10364 #define ELF_COMMONPAGESIZE 0x1000
10365 #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE
10366 #define elf_info_to_howto ppc_elf_info_to_howto
10368 #ifdef EM_CYGNUS_POWERPC
10369 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10373 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10376 #define elf_backend_plt_not_loaded 1
10377 #define elf_backend_want_dynrelro 1
10378 #define elf_backend_can_gc_sections 1
10379 #define elf_backend_can_refcount 1
10380 #define elf_backend_rela_normal 1
10381 #define elf_backend_caches_rawsize 1
10383 #define bfd_elf32_mkobject ppc_elf_mkobject
10384 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10385 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10386 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10387 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10388 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10389 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10390 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10392 #define elf_backend_object_p ppc_elf_object_p
10393 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10394 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10395 #define elf_backend_relocate_section ppc_elf_relocate_section
10396 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10397 #define elf_backend_check_relocs ppc_elf_check_relocs
10398 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10399 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10400 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10401 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10402 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10403 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10404 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10405 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10406 #define elf_backend_fake_sections ppc_elf_fake_sections
10407 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10408 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10409 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10410 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10411 #define elf_backend_write_core_note ppc_elf_write_core_note
10412 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10413 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10414 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10415 #define elf_backend_write_section ppc_elf_write_section
10416 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10417 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10418 #define elf_backend_action_discarded ppc_elf_action_discarded
10419 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10420 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10422 #include "elf32-target.h"
10424 /* FreeBSD Target */
10426 #undef TARGET_LITTLE_SYM
10427 #undef TARGET_LITTLE_NAME
10429 #undef TARGET_BIG_SYM
10430 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10431 #undef TARGET_BIG_NAME
10432 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10435 #define ELF_OSABI ELFOSABI_FREEBSD
10438 #define elf32_bed elf32_powerpc_fbsd_bed
10440 #include "elf32-target.h"
10442 /* VxWorks Target */
10444 #undef TARGET_LITTLE_SYM
10445 #undef TARGET_LITTLE_NAME
10447 #undef TARGET_BIG_SYM
10448 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10449 #undef TARGET_BIG_NAME
10450 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10454 /* VxWorks uses the elf default section flags for .plt. */
10455 static const struct bfd_elf_special_section *
10456 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10458 if (sec->name == NULL)
10461 if (strcmp (sec->name, ".plt") == 0)
10462 return _bfd_elf_get_sec_type_attr (abfd, sec);
10464 return ppc_elf_get_sec_type_attr (abfd, sec);
10467 /* Like ppc_elf_link_hash_table_create, but overrides
10468 appropriately for VxWorks. */
10469 static struct bfd_link_hash_table *
10470 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10472 struct bfd_link_hash_table *ret;
10474 ret = ppc_elf_link_hash_table_create (abfd);
10477 struct ppc_elf_link_hash_table *htab
10478 = (struct ppc_elf_link_hash_table *)ret;
10479 htab->is_vxworks = 1;
10480 htab->plt_type = PLT_VXWORKS;
10481 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10482 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10483 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10488 /* Tweak magic VxWorks symbols as they are loaded. */
10490 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10491 struct bfd_link_info *info,
10492 Elf_Internal_Sym *sym,
10493 const char **namep,
10498 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10502 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10506 ppc_elf_vxworks_final_write_processing (bfd *abfd)
10508 ppc_final_write_processing (abfd);
10509 return elf_vxworks_final_write_processing (abfd);
10512 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10514 #undef elf_backend_want_plt_sym
10515 #define elf_backend_want_plt_sym 1
10516 #undef elf_backend_want_got_plt
10517 #define elf_backend_want_got_plt 1
10518 #undef elf_backend_got_symbol_offset
10519 #define elf_backend_got_symbol_offset 0
10520 #undef elf_backend_plt_not_loaded
10521 #define elf_backend_plt_not_loaded 0
10522 #undef elf_backend_plt_readonly
10523 #define elf_backend_plt_readonly 1
10524 #undef elf_backend_got_header_size
10525 #define elf_backend_got_header_size 12
10526 #undef elf_backend_dtrel_excludes_plt
10527 #define elf_backend_dtrel_excludes_plt 1
10529 #undef bfd_elf32_get_synthetic_symtab
10531 #undef bfd_elf32_bfd_link_hash_table_create
10532 #define bfd_elf32_bfd_link_hash_table_create \
10533 ppc_elf_vxworks_link_hash_table_create
10534 #undef elf_backend_add_symbol_hook
10535 #define elf_backend_add_symbol_hook \
10536 ppc_elf_vxworks_add_symbol_hook
10537 #undef elf_backend_link_output_symbol_hook
10538 #define elf_backend_link_output_symbol_hook \
10539 elf_vxworks_link_output_symbol_hook
10540 #undef elf_backend_final_write_processing
10541 #define elf_backend_final_write_processing \
10542 ppc_elf_vxworks_final_write_processing
10543 #undef elf_backend_get_sec_type_attr
10544 #define elf_backend_get_sec_type_attr \
10545 ppc_elf_vxworks_get_sec_type_attr
10546 #undef elf_backend_emit_relocs
10547 #define elf_backend_emit_relocs \
10548 elf_vxworks_emit_relocs
10551 #define elf32_bed ppc_elf_vxworks_bed
10552 #undef elf_backend_post_process_headers
10554 #include "elf32-target.h"