1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2018 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, 0x1f07ff, 16, FALSE, dont,
653 bfd_elf_generic_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);
1080 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
1082 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
1085 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
1087 unsigned int val = bfd_get_32 (abfd, contents + i);
1090 case PPC_APUINFO_PMR:
1091 case PPC_APUINFO_RFMCI:
1093 mach = bfd_mach_ppc_titan;
1096 case PPC_APUINFO_ISEL:
1097 case PPC_APUINFO_CACHELCK:
1098 if (mach == bfd_mach_ppc_titan)
1099 mach = bfd_mach_ppc_e500mc;
1102 case PPC_APUINFO_SPE:
1103 case PPC_APUINFO_EFS:
1104 case PPC_APUINFO_BRLOCK:
1105 if (mach != bfd_mach_ppc_vle)
1106 mach = bfd_mach_ppc_e500;
1109 case PPC_APUINFO_VLE:
1110 mach = bfd_mach_ppc_vle;
1121 if (mach != 0 && mach != -1ul)
1123 const bfd_arch_info_type *arch;
1125 for (arch = abfd->arch_info->next; arch; arch = arch->next)
1126 if (arch->mach == mach)
1128 abfd->arch_info = arch;
1135 /* Fix bad default arch selected for a 32 bit input bfd when the
1136 default is 64 bit. Also select arch based on apuinfo. */
1139 ppc_elf_object_p (bfd *abfd)
1141 if (!abfd->arch_info->the_default)
1144 if (abfd->arch_info->bits_per_word == 64)
1146 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1148 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1150 /* Relies on arch after 64 bit default being 32 bit default. */
1151 abfd->arch_info = abfd->arch_info->next;
1152 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1155 return _bfd_elf_ppc_set_arch (abfd);
1158 /* Function to set whether a module needs the -mrelocatable bit set. */
1161 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1163 BFD_ASSERT (!elf_flags_init (abfd)
1164 || elf_elfheader (abfd)->e_flags == flags);
1166 elf_elfheader (abfd)->e_flags = flags;
1167 elf_flags_init (abfd) = TRUE;
1171 /* Support for core dump NOTE sections. */
1174 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1179 switch (note->descsz)
1184 case 268: /* Linux/PPC. */
1186 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1189 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1198 /* Make a ".reg/999" section. */
1199 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1200 size, note->descpos + offset);
1204 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1206 switch (note->descsz)
1211 case 128: /* Linux/PPC elf_prpsinfo. */
1212 elf_tdata (abfd)->core->pid
1213 = bfd_get_32 (abfd, note->descdata + 16);
1214 elf_tdata (abfd)->core->program
1215 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1216 elf_tdata (abfd)->core->command
1217 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1220 /* Note that for some reason, a spurious space is tacked
1221 onto the end of the args in some (at least one anyway)
1222 implementations, so strip it off if it exists. */
1225 char *command = elf_tdata (abfd)->core->command;
1226 int n = strlen (command);
1228 if (0 < n && command[n - 1] == ' ')
1229 command[n - 1] = '\0';
1236 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1245 char data[128] ATTRIBUTE_NONSTRING;
1248 va_start (ap, note_type);
1249 memset (data, 0, sizeof (data));
1250 strncpy (data + 32, va_arg (ap, const char *), 16);
1251 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
1253 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
1254 -Wstringop-truncation:
1255 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
1257 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
1259 strncpy (data + 48, va_arg (ap, const char *), 80);
1260 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
1264 return elfcore_write_note (abfd, buf, bufsiz,
1265 "CORE", note_type, data, sizeof (data));
1276 va_start (ap, note_type);
1277 memset (data, 0, 72);
1278 pid = va_arg (ap, long);
1279 bfd_put_32 (abfd, pid, data + 24);
1280 cursig = va_arg (ap, int);
1281 bfd_put_16 (abfd, cursig, data + 12);
1282 greg = va_arg (ap, const void *);
1283 memcpy (data + 72, greg, 192);
1284 memset (data + 264, 0, 4);
1286 return elfcore_write_note (abfd, buf, bufsiz,
1287 "CORE", note_type, data, sizeof (data));
1293 ppc_elf_lookup_section_flags (char *flag_name)
1296 if (!strcmp (flag_name, "SHF_PPC_VLE"))
1302 /* Return address for Ith PLT stub in section PLT, for relocation REL
1303 or (bfd_vma) -1 if it should not be included. */
1306 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1307 const asection *plt ATTRIBUTE_UNUSED,
1310 return rel->address;
1313 /* Handle a PowerPC specific section when reading an object file. This
1314 is called when bfd_section_from_shdr finds a section with an unknown
1318 ppc_elf_section_from_shdr (bfd *abfd,
1319 Elf_Internal_Shdr *hdr,
1326 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1329 newsect = hdr->bfd_section;
1330 flags = bfd_get_section_flags (abfd, newsect);
1331 if (hdr->sh_flags & SHF_EXCLUDE)
1332 flags |= SEC_EXCLUDE;
1334 if (hdr->sh_type == SHT_ORDERED)
1335 flags |= SEC_SORT_ENTRIES;
1337 bfd_set_section_flags (abfd, newsect, flags);
1341 /* Set up any other section flags and such that may be necessary. */
1344 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1345 Elf_Internal_Shdr *shdr,
1348 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1349 shdr->sh_type = SHT_ORDERED;
1354 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1355 need to bump up the number of section headers. */
1358 ppc_elf_additional_program_headers (bfd *abfd,
1359 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1364 s = bfd_get_section_by_name (abfd, ".sbss2");
1365 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1368 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1369 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1375 /* Modify the segment map for VLE executables. */
1378 ppc_elf_modify_segment_map (bfd *abfd,
1379 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1381 struct elf_segment_map *m;
1383 /* At this point in the link, output sections have already been sorted by
1384 LMA and assigned to segments. All that is left to do is to ensure
1385 there is no mixing of VLE & non-VLE sections in a text segment.
1386 If we find that case, we split the segment.
1387 We maintain the original output section order. */
1389 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1391 struct elf_segment_map *n;
1394 unsigned int p_flags;
1396 if (m->p_type != PT_LOAD || m->count == 0)
1399 for (p_flags = PF_R, j = 0; j != m->count; ++j)
1401 if ((m->sections[j]->flags & SEC_READONLY) == 0)
1403 if ((m->sections[j]->flags & SEC_CODE) != 0)
1406 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
1407 p_flags |= PF_PPC_VLE;
1412 while (++j != m->count)
1414 unsigned int p_flags1 = PF_R;
1416 if ((m->sections[j]->flags & SEC_READONLY) == 0)
1418 if ((m->sections[j]->flags & SEC_CODE) != 0)
1421 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
1422 p_flags1 |= PF_PPC_VLE;
1423 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
1426 p_flags |= p_flags1;
1428 /* If we're splitting a segment which originally contained rw
1429 sections then those sections might now only be in one of the
1430 two parts. So always set p_flags if splitting, even if we
1431 are being called for objcopy with p_flags_valid set. */
1432 if (j != m->count || !m->p_flags_valid)
1434 m->p_flags_valid = 1;
1435 m->p_flags = p_flags;
1440 /* Sections 0..j-1 stay in this (current) segment,
1441 the remainder are put in a new segment.
1442 The scan resumes with the new segment. */
1444 amt = sizeof (struct elf_segment_map);
1445 amt += (m->count - j - 1) * sizeof (asection *);
1446 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
1450 n->p_type = PT_LOAD;
1451 n->count = m->count - j;
1452 for (k = 0; k < n->count; ++k)
1453 n->sections[k] = m->sections[j + k];
1455 m->p_size_valid = 0;
1463 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1464 .PPC.EMB.sbss0 a normal section, and not a bss section so
1465 that the linker doesn't crater when trying to make more than
1468 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1470 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1471 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1472 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1473 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1474 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1475 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1476 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
1477 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1478 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1479 { NULL, 0, 0, 0, 0 }
1482 /* This is what we want for new plt/got. */
1483 static struct bfd_elf_special_section ppc_alt_plt =
1484 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1486 static const struct bfd_elf_special_section *
1487 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
1489 const struct bfd_elf_special_section *ssect;
1491 /* See if this is one of the special sections. */
1492 if (sec->name == NULL)
1495 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1499 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1500 ssect = &ppc_alt_plt;
1504 return _bfd_elf_get_sec_type_attr (abfd, sec);
1507 /* Very simple linked list structure for recording apuinfo values. */
1508 typedef struct apuinfo_list
1510 struct apuinfo_list *next;
1511 unsigned long value;
1515 static apuinfo_list *head;
1516 static bfd_boolean apuinfo_set;
1519 apuinfo_list_init (void)
1522 apuinfo_set = FALSE;
1526 apuinfo_list_add (unsigned long value)
1528 apuinfo_list *entry = head;
1530 while (entry != NULL)
1532 if (entry->value == value)
1534 entry = entry->next;
1537 entry = bfd_malloc (sizeof (* entry));
1541 entry->value = value;
1547 apuinfo_list_length (void)
1549 apuinfo_list *entry;
1550 unsigned long count;
1552 for (entry = head, count = 0;
1554 entry = entry->next)
1560 static inline unsigned long
1561 apuinfo_list_element (unsigned long number)
1563 apuinfo_list * entry;
1567 entry = entry->next)
1570 return entry ? entry->value : 0;
1574 apuinfo_list_finish (void)
1576 apuinfo_list *entry;
1578 for (entry = head; entry;)
1580 apuinfo_list *next = entry->next;
1588 /* Scan the input BFDs and create a linked list of
1589 the APUinfo values that will need to be emitted. */
1592 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1596 char *buffer = NULL;
1597 bfd_size_type largest_input_size = 0;
1599 unsigned long length;
1600 const char *error_message = NULL;
1602 if (link_info == NULL)
1605 apuinfo_list_init ();
1607 /* Read in the input sections contents. */
1608 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
1610 unsigned long datum;
1612 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1616 /* xgettext:c-format */
1617 error_message = _("corrupt %s section in %pB");
1618 length = asec->size;
1623 if (largest_input_size < asec->size)
1627 largest_input_size = asec->size;
1628 buffer = bfd_malloc (largest_input_size);
1633 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
1634 || (bfd_bread (buffer, length, ibfd) != length))
1636 /* xgettext:c-format */
1637 error_message = _("unable to read in %s section from %pB");
1641 /* Verify the contents of the header. Note - we have to
1642 extract the values this way in order to allow for a
1643 host whose endian-ness is different from the target. */
1644 datum = bfd_get_32 (ibfd, buffer);
1645 if (datum != sizeof APUINFO_LABEL)
1648 datum = bfd_get_32 (ibfd, buffer + 8);
1652 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
1655 /* Get the number of bytes used for apuinfo entries. */
1656 datum = bfd_get_32 (ibfd, buffer + 4);
1657 if (datum + 20 != length)
1660 /* Scan the apuinfo section, building a list of apuinfo numbers. */
1661 for (i = 0; i < datum; i += 4)
1662 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
1665 error_message = NULL;
1669 /* Compute the size of the output section. */
1670 unsigned num_entries = apuinfo_list_length ();
1672 /* Set the output section size, if it exists. */
1673 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1675 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
1678 /* xgettext:c-format */
1679 error_message = _("warning: unable to set size of %s section in %pB");
1688 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
1691 /* Prevent the output section from accumulating the input sections'
1692 contents. We have already stored this in our linked list structure. */
1695 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
1696 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
1698 bfd_byte *contents ATTRIBUTE_UNUSED)
1700 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
1703 /* Finally we can generate the output section. */
1706 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
1711 unsigned num_entries;
1712 bfd_size_type length;
1714 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1721 length = asec->size;
1725 buffer = bfd_malloc (length);
1729 (_("failed to allocate space for new APUinfo section"));
1733 /* Create the apuinfo header. */
1734 num_entries = apuinfo_list_length ();
1735 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
1736 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
1737 bfd_put_32 (abfd, 0x2, buffer + 8);
1738 strcpy ((char *) buffer + 12, APUINFO_LABEL);
1741 for (i = 0; i < num_entries; i++)
1743 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
1747 if (length != asec->size)
1748 _bfd_error_handler (_("failed to compute new APUinfo section"));
1750 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
1751 _bfd_error_handler (_("failed to install new APUinfo section"));
1755 apuinfo_list_finish ();
1759 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
1761 bfd_byte buf[4 * 4];
1763 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
1766 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
1767 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
1768 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
1769 && bfd_get_32 (abfd, buf + 12) == BCTR);
1773 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
1775 bfd_vma vma = *(bfd_vma *) ptr;
1776 return ((section->flags & SEC_ALLOC) != 0
1777 && section->vma <= vma
1778 && vma < section->vma + section->size);
1782 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
1783 long dynsymcount, asymbol **dynsyms,
1786 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
1787 asection *plt, *relplt, *dynamic, *glink;
1788 bfd_vma glink_vma = 0;
1789 bfd_vma resolv_vma = 0;
1793 long count, i, stub_delta;
1800 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
1803 if (dynsymcount <= 0)
1806 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
1810 plt = bfd_get_section_by_name (abfd, ".plt");
1814 /* Call common code to handle old-style executable PLTs. */
1815 if (elf_section_flags (plt) & SHF_EXECINSTR)
1816 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
1817 dynsymcount, dynsyms, ret);
1819 /* If this object was prelinked, the prelinker stored the address
1820 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
1821 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
1822 if (dynamic != NULL)
1824 bfd_byte *dynbuf, *extdyn, *extdynend;
1826 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
1828 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
1831 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1832 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1835 extdynend = extdyn + dynamic->size;
1836 for (; extdyn < extdynend; extdyn += extdynsize)
1838 Elf_Internal_Dyn dyn;
1839 (*swap_dyn_in) (abfd, extdyn, &dyn);
1841 if (dyn.d_tag == DT_NULL)
1844 if (dyn.d_tag == DT_PPC_GOT)
1846 unsigned int g_o_t = dyn.d_un.d_val;
1847 asection *got = bfd_get_section_by_name (abfd, ".got");
1849 && bfd_get_section_contents (abfd, got, buf,
1850 g_o_t - got->vma + 4, 4))
1851 glink_vma = bfd_get_32 (abfd, buf);
1858 /* Otherwise we read the first plt entry. */
1861 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
1862 glink_vma = bfd_get_32 (abfd, buf);
1868 /* The .glink section usually does not survive the final
1869 link; search for the section (usually .text) where the
1870 glink stubs now reside. */
1871 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
1875 /* Determine glink PLT resolver by reading the relative branch
1876 from the first glink stub. */
1877 if (bfd_get_section_contents (abfd, glink, buf,
1878 glink_vma - glink->vma, 4))
1880 unsigned int insn = bfd_get_32 (abfd, buf);
1882 /* The first glink stub may either branch to the resolver ... */
1884 if ((insn & ~0x3fffffc) == 0)
1885 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
1887 /* ... or fall through a bunch of NOPs. */
1888 else if ((insn ^ B ^ NOP) == 0)
1890 bfd_get_section_contents (abfd, glink, buf,
1891 glink_vma - glink->vma + i, 4);
1893 if (bfd_get_32 (abfd, buf) != NOP)
1895 resolv_vma = glink_vma + i;
1900 count = relplt->size / sizeof (Elf32_External_Rela);
1901 /* If the stubs are those for -shared/-pie then we might have
1902 multiple stubs for each plt entry. If that is the case then
1903 there is no way to associate stubs with their plt entries short
1904 of figuring out the GOT pointer value used in the stub.
1905 The offsets tested here need to cover all possible values of
1906 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
1907 stub_off = glink_vma - glink->vma;
1908 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
1909 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
1911 if (stub_delta > 32)
1914 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
1915 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
1918 size = count * sizeof (asymbol);
1919 p = relplt->relocation;
1920 for (i = 0; i < count; i++, p++)
1922 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
1924 size += sizeof ("+0x") - 1 + 8;
1927 size += sizeof (asymbol) + sizeof ("__glink");
1930 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
1932 s = *ret = bfd_malloc (size);
1936 stub_off = glink_vma - glink->vma;
1937 names = (char *) (s + count + 1 + (resolv_vma != 0));
1938 p = relplt->relocation + count - 1;
1939 for (i = 0; i < count; i++)
1943 stub_off -= stub_delta;
1944 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
1946 *s = **p->sym_ptr_ptr;
1947 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
1948 we are defining a symbol, ensure one of them is set. */
1949 if ((s->flags & BSF_LOCAL) == 0)
1950 s->flags |= BSF_GLOBAL;
1951 s->flags |= BSF_SYNTHETIC;
1953 s->value = stub_off;
1956 len = strlen ((*p->sym_ptr_ptr)->name);
1957 memcpy (names, (*p->sym_ptr_ptr)->name, len);
1961 memcpy (names, "+0x", sizeof ("+0x") - 1);
1962 names += sizeof ("+0x") - 1;
1963 bfd_sprintf_vma (abfd, names, p->addend);
1964 names += strlen (names);
1966 memcpy (names, "@plt", sizeof ("@plt"));
1967 names += sizeof ("@plt");
1972 /* Add a symbol at the start of the glink branch table. */
1973 memset (s, 0, sizeof *s);
1975 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
1977 s->value = glink_vma - glink->vma;
1979 memcpy (names, "__glink", sizeof ("__glink"));
1980 names += sizeof ("__glink");
1986 /* Add a symbol for the glink PLT resolver. */
1987 memset (s, 0, sizeof *s);
1989 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
1991 s->value = resolv_vma - glink->vma;
1993 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
1994 names += sizeof ("__glink_PLTresolve");
2002 /* The following functions are specific to the ELF linker, while
2003 functions above are used generally. They appear in this file more
2004 or less in the order in which they are called. eg.
2005 ppc_elf_check_relocs is called early in the link process,
2006 ppc_elf_finish_dynamic_sections is one of the last functions
2009 /* Track PLT entries needed for a given symbol. We might need more
2010 than one glink entry per symbol when generating a pic binary. */
2013 struct plt_entry *next;
2015 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2016 This field stores the offset into .got2 used to initialise the
2017 GOT pointer reg. It will always be at least 32768. (Current
2018 gcc always uses an offset of 32768, but ld -r will pack .got2
2019 sections together resulting in larger offsets). */
2022 /* The .got2 section. */
2025 /* PLT refcount or offset. */
2028 bfd_signed_vma refcount;
2032 /* .glink stub offset. */
2033 bfd_vma glink_offset;
2036 /* Of those relocs that might be copied as dynamic relocs, this
2037 function selects those that must be copied when linking a shared
2038 library or PIE, even when the symbol is local. */
2041 must_be_dyn_reloc (struct bfd_link_info *info,
2042 enum elf_ppc_reloc_type r_type)
2047 /* Only relative relocs can be resolved when the object load
2048 address isn't fixed. DTPREL32 is excluded because the
2049 dynamic linker needs to differentiate global dynamic from
2050 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
2055 case R_PPC_REL14_BRTAKEN:
2056 case R_PPC_REL14_BRNTAKEN:
2062 case R_PPC_TPREL16_LO:
2063 case R_PPC_TPREL16_HI:
2064 case R_PPC_TPREL16_HA:
2065 /* These relocations are relative but in a shared library the
2066 linker doesn't know the thread pointer base. */
2067 return bfd_link_dll (info);
2071 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2072 copying dynamic variables from a shared lib into an app's dynbss
2073 section, and instead use a dynamic relocation to point into the
2075 #define ELIMINATE_COPY_RELOCS 1
2077 /* Used to track dynamic relocations for local symbols. */
2078 struct ppc_dyn_relocs
2080 struct ppc_dyn_relocs *next;
2082 /* The input section of the reloc. */
2085 /* Total number of relocs copied for the input section. */
2086 unsigned int count : 31;
2088 /* Whether this entry is for STT_GNU_IFUNC symbols. */
2089 unsigned int ifunc : 1;
2092 /* PPC ELF linker hash entry. */
2094 struct ppc_elf_link_hash_entry
2096 struct elf_link_hash_entry elf;
2098 /* If this symbol is used in the linker created sections, the processor
2099 specific backend uses this field to map the field into the offset
2100 from the beginning of the section. */
2101 elf_linker_section_pointers_t *linker_section_pointer;
2103 /* Track dynamic relocs copied for this symbol. */
2104 struct elf_dyn_relocs *dyn_relocs;
2106 /* Contexts in which symbol is used in the GOT.
2107 Bits are or'd into the mask as the corresponding relocs are
2108 encountered during check_relocs, with TLS_TLS being set when any
2109 of the other TLS bits are set. tls_optimize clears bits when
2110 optimizing to indicate the corresponding GOT entry type is not
2111 needed. If set, TLS_TLS is never cleared. tls_optimize may also
2112 set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a
2113 separate flag rather than setting TPREL just for convenience in
2114 distinguishing the two cases.
2115 These flags are also kept for local symbols. */
2116 #define TLS_TLS 1 /* Any TLS reloc. */
2117 #define TLS_GD 2 /* GD reloc. */
2118 #define TLS_LD 4 /* LD reloc. */
2119 #define TLS_TPREL 8 /* TPREL reloc, => IE. */
2120 #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
2121 #define TLS_MARK 32 /* __tls_get_addr call marked. */
2122 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2123 unsigned char tls_mask;
2125 /* The above field is also used to mark function symbols. In which
2126 case TLS_TLS will be 0. */
2127 #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
2128 #define PLT_KEEP 4 /* inline plt call requires plt entry. */
2129 #define NON_GOT 256 /* local symbol plt, not stored. */
2131 /* Nonzero if we have seen a small data relocation referring to this
2133 unsigned char has_sda_refs : 1;
2135 /* Flag use of given relocations. */
2136 unsigned char has_addr16_ha : 1;
2137 unsigned char has_addr16_lo : 1;
2140 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2142 /* PPC ELF linker hash table. */
2144 struct ppc_elf_link_hash_table
2146 struct elf_link_hash_table elf;
2148 /* Various options passed from the linker. */
2149 struct ppc_elf_params *params;
2151 /* Short-cuts to get to dynamic linker sections. */
2155 elf_linker_section_t sdata[2];
2157 asection *glink_eh_frame;
2159 asection *relpltlocal;
2161 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2164 /* Shortcut to __tls_get_addr. */
2165 struct elf_link_hash_entry *tls_get_addr;
2167 /* The bfd that forced an old-style PLT. */
2170 /* TLS local dynamic got entry handling. */
2172 bfd_signed_vma refcount;
2176 /* Offset of branch table to PltResolve function in glink. */
2177 bfd_vma glink_pltresolve;
2179 /* Size of reserved GOT entries. */
2180 unsigned int got_header_size;
2181 /* Non-zero if allocating the header left a gap. */
2182 unsigned int got_gap;
2184 /* The type of PLT we have chosen to use. */
2185 enum ppc_elf_plt_type plt_type;
2187 /* True if the target system is VxWorks. */
2188 unsigned int is_vxworks:1;
2190 /* Whether there exist local gnu indirect function resolvers,
2191 referenced by dynamic relocations. */
2192 unsigned int local_ifunc_resolver:1;
2193 unsigned int maybe_local_ifunc_resolver:1;
2195 /* Set if tls optimization is enabled. */
2196 unsigned int do_tls_opt:1;
2198 /* Set if inline plt calls should be converted to direct calls. */
2199 unsigned int can_convert_all_inline_plt:1;
2201 /* The size of PLT entries. */
2203 /* The distance between adjacent PLT slots. */
2205 /* The size of the first PLT entry. */
2206 int plt_initial_entry_size;
2208 /* Small local sym cache. */
2209 struct sym_cache sym_cache;
2212 /* Rename some of the generic section flags to better document how they
2213 are used for ppc32. The flags are only valid for ppc32 elf objects. */
2215 /* Nonzero if this section has TLS related relocations. */
2216 #define has_tls_reloc sec_flg0
2218 /* Nonzero if this section has a call to __tls_get_addr. */
2219 #define has_tls_get_addr_call sec_flg1
2221 /* Flag set when PLTCALL relocs are detected. */
2222 #define has_pltcall sec_flg2
2224 /* Get the PPC ELF linker hash table from a link_info structure. */
2226 #define ppc_elf_hash_table(p) \
2227 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2228 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2230 /* Create an entry in a PPC ELF linker hash table. */
2232 static struct bfd_hash_entry *
2233 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2234 struct bfd_hash_table *table,
2237 /* Allocate the structure if it has not already been allocated by a
2241 entry = bfd_hash_allocate (table,
2242 sizeof (struct ppc_elf_link_hash_entry));
2247 /* Call the allocation method of the superclass. */
2248 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2251 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2252 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2253 ppc_elf_hash_entry (entry)->tls_mask = 0;
2254 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
2260 /* Create a PPC ELF linker hash table. */
2262 static struct bfd_link_hash_table *
2263 ppc_elf_link_hash_table_create (bfd *abfd)
2265 struct ppc_elf_link_hash_table *ret;
2266 static struct ppc_elf_params default_params
2267 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
2269 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2273 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2274 ppc_elf_link_hash_newfunc,
2275 sizeof (struct ppc_elf_link_hash_entry),
2282 ret->elf.init_plt_refcount.refcount = 0;
2283 ret->elf.init_plt_refcount.glist = NULL;
2284 ret->elf.init_plt_offset.offset = 0;
2285 ret->elf.init_plt_offset.glist = NULL;
2287 ret->params = &default_params;
2289 ret->sdata[0].name = ".sdata";
2290 ret->sdata[0].sym_name = "_SDA_BASE_";
2291 ret->sdata[0].bss_name = ".sbss";
2293 ret->sdata[1].name = ".sdata2";
2294 ret->sdata[1].sym_name = "_SDA2_BASE_";
2295 ret->sdata[1].bss_name = ".sbss2";
2297 ret->plt_entry_size = 12;
2298 ret->plt_slot_size = 8;
2299 ret->plt_initial_entry_size = 72;
2301 return &ret->elf.root;
2304 /* Hook linker params into hash table. */
2307 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
2309 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2312 htab->params = params;
2313 params->pagesize_p2 = bfd_log2 (params->pagesize);
2316 /* Create .got and the related sections. */
2319 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2321 struct ppc_elf_link_hash_table *htab;
2323 if (!_bfd_elf_create_got_section (abfd, info))
2326 htab = ppc_elf_hash_table (info);
2327 if (!htab->is_vxworks)
2329 /* The powerpc .got has a blrl instruction in it. Mark it
2331 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2332 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2333 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
2340 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
2341 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
2342 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
2345 ppc_elf_create_linker_section (bfd *abfd,
2346 struct bfd_link_info *info,
2348 elf_linker_section_t *lsect)
2352 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2353 | SEC_LINKER_CREATED);
2355 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
2360 /* Define the sym on the first section of this name. */
2361 s = bfd_get_section_by_name (abfd, lsect->name);
2363 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
2364 if (lsect->sym == NULL)
2366 lsect->sym->root.u.def.value = 0x8000;
2371 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2373 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2378 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2379 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2380 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2382 p2align = htab->params->ppc476_workaround ? 6 : 4;
2383 if (p2align < htab->params->plt_stub_align)
2384 p2align = htab->params->plt_stub_align;
2386 || !bfd_set_section_alignment (abfd, s, p2align))
2389 if (!info->no_ld_generated_unwind_info)
2391 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2392 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2393 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
2394 htab->glink_eh_frame = s;
2396 || !bfd_set_section_alignment (abfd, s, 2))
2400 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2401 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2404 || !bfd_set_section_alignment (abfd, s, 4))
2407 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2408 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2409 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
2410 htab->elf.irelplt = s;
2412 || ! bfd_set_section_alignment (abfd, s, 2))
2415 /* Local plt entries. */
2416 flags = (SEC_ALLOC | SEC_LOAD
2417 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2418 htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt",
2420 if (htab->pltlocal == NULL
2421 || ! bfd_set_section_alignment (abfd, htab->pltlocal, 2))
2424 if (bfd_link_pic (info))
2426 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
2427 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2429 = bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags);
2430 if (htab->relpltlocal == NULL
2431 || ! bfd_set_section_alignment (abfd, htab->relpltlocal, 2))
2435 if (!ppc_elf_create_linker_section (abfd, info, 0,
2439 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
2446 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2447 to output sections (just like _bfd_elf_create_dynamic_sections has
2448 to create .dynbss and .rela.bss). */
2451 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2453 struct ppc_elf_link_hash_table *htab;
2457 htab = ppc_elf_hash_table (info);
2459 if (htab->elf.sgot == NULL
2460 && !ppc_elf_create_got (abfd, info))
2463 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2466 if (htab->glink == NULL
2467 && !ppc_elf_create_glink (abfd, info))
2470 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
2471 SEC_ALLOC | SEC_LINKER_CREATED);
2476 if (! bfd_link_pic (info))
2478 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2479 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2480 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
2483 || ! bfd_set_section_alignment (abfd, s, 2))
2487 if (htab->is_vxworks
2488 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2492 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2493 if (htab->plt_type == PLT_VXWORKS)
2494 /* The VxWorks PLT is a loaded section with contents. */
2495 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2496 return bfd_set_section_flags (abfd, s, flags);
2499 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2502 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2503 struct elf_link_hash_entry *dir,
2504 struct elf_link_hash_entry *ind)
2506 struct ppc_elf_link_hash_entry *edir, *eind;
2508 edir = (struct ppc_elf_link_hash_entry *) dir;
2509 eind = (struct ppc_elf_link_hash_entry *) ind;
2511 edir->tls_mask |= eind->tls_mask;
2512 edir->has_sda_refs |= eind->has_sda_refs;
2514 if (edir->elf.versioned != versioned_hidden)
2515 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2516 edir->elf.ref_regular |= eind->elf.ref_regular;
2517 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2518 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2519 edir->elf.needs_plt |= eind->elf.needs_plt;
2520 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2522 /* If we were called to copy over info for a weak sym, that's all. */
2523 if (eind->elf.root.type != bfd_link_hash_indirect)
2526 if (eind->dyn_relocs != NULL)
2528 if (edir->dyn_relocs != NULL)
2530 struct elf_dyn_relocs **pp;
2531 struct elf_dyn_relocs *p;
2533 /* Add reloc counts against the indirect sym to the direct sym
2534 list. Merge any entries against the same section. */
2535 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2537 struct elf_dyn_relocs *q;
2539 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2540 if (q->sec == p->sec)
2542 q->pc_count += p->pc_count;
2543 q->count += p->count;
2550 *pp = edir->dyn_relocs;
2553 edir->dyn_relocs = eind->dyn_relocs;
2554 eind->dyn_relocs = NULL;
2557 /* Copy over the GOT refcount entries that we may have already seen to
2558 the symbol which just became indirect. */
2559 edir->elf.got.refcount += eind->elf.got.refcount;
2560 eind->elf.got.refcount = 0;
2562 /* And plt entries. */
2563 if (eind->elf.plt.plist != NULL)
2565 if (edir->elf.plt.plist != NULL)
2567 struct plt_entry **entp;
2568 struct plt_entry *ent;
2570 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2572 struct plt_entry *dent;
2574 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2575 if (dent->sec == ent->sec && dent->addend == ent->addend)
2577 dent->plt.refcount += ent->plt.refcount;
2584 *entp = edir->elf.plt.plist;
2587 edir->elf.plt.plist = eind->elf.plt.plist;
2588 eind->elf.plt.plist = NULL;
2591 if (eind->elf.dynindx != -1)
2593 if (edir->elf.dynindx != -1)
2594 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2595 edir->elf.dynstr_index);
2596 edir->elf.dynindx = eind->elf.dynindx;
2597 edir->elf.dynstr_index = eind->elf.dynstr_index;
2598 eind->elf.dynindx = -1;
2599 eind->elf.dynstr_index = 0;
2603 /* Hook called by the linker routine which adds symbols from an object
2604 file. We use it to put .comm items in .sbss, and not .bss. */
2607 ppc_elf_add_symbol_hook (bfd *abfd,
2608 struct bfd_link_info *info,
2609 Elf_Internal_Sym *sym,
2610 const char **namep ATTRIBUTE_UNUSED,
2611 flagword *flagsp ATTRIBUTE_UNUSED,
2615 if (sym->st_shndx == SHN_COMMON
2616 && !bfd_link_relocatable (info)
2617 && is_ppc_elf (info->output_bfd)
2618 && sym->st_size <= elf_gp_size (abfd))
2620 /* Common symbols less than or equal to -G nn bytes are automatically
2622 struct ppc_elf_link_hash_table *htab;
2624 htab = ppc_elf_hash_table (info);
2625 if (htab->sbss == NULL)
2627 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2629 if (!htab->elf.dynobj)
2630 htab->elf.dynobj = abfd;
2632 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2635 if (htab->sbss == NULL)
2640 *valp = sym->st_size;
2646 /* Find a linker generated pointer with a given addend and type. */
2648 static elf_linker_section_pointers_t *
2649 elf_find_pointer_linker_section
2650 (elf_linker_section_pointers_t *linker_pointers,
2652 elf_linker_section_t *lsect)
2654 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2655 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2656 return linker_pointers;
2661 /* Allocate a pointer to live in a linker created section. */
2664 elf_allocate_pointer_linker_section (bfd *abfd,
2665 elf_linker_section_t *lsect,
2666 struct elf_link_hash_entry *h,
2667 const Elf_Internal_Rela *rel)
2669 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2670 elf_linker_section_pointers_t *linker_section_ptr;
2671 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2674 BFD_ASSERT (lsect != NULL);
2676 /* Is this a global symbol? */
2679 struct ppc_elf_link_hash_entry *eh;
2681 /* Has this symbol already been allocated? If so, our work is done. */
2682 eh = (struct ppc_elf_link_hash_entry *) h;
2683 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2688 ptr_linker_section_ptr = &eh->linker_section_pointer;
2692 BFD_ASSERT (is_ppc_elf (abfd));
2694 /* Allocation of a pointer to a local symbol. */
2695 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2697 /* Allocate a table to hold the local symbols if first time. */
2700 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
2703 amt *= sizeof (elf_linker_section_pointers_t *);
2704 ptr = bfd_zalloc (abfd, amt);
2709 elf_local_ptr_offsets (abfd) = ptr;
2712 /* Has this symbol already been allocated? If so, our work is done. */
2713 if (elf_find_pointer_linker_section (ptr[r_symndx],
2718 ptr_linker_section_ptr = &ptr[r_symndx];
2721 /* Allocate space for a pointer in the linker section, and allocate
2722 a new pointer record from internal memory. */
2723 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2724 amt = sizeof (elf_linker_section_pointers_t);
2725 linker_section_ptr = bfd_alloc (abfd, amt);
2727 if (!linker_section_ptr)
2730 linker_section_ptr->next = *ptr_linker_section_ptr;
2731 linker_section_ptr->addend = rel->r_addend;
2732 linker_section_ptr->lsect = lsect;
2733 *ptr_linker_section_ptr = linker_section_ptr;
2735 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
2737 linker_section_ptr->offset = lsect->section->size;
2738 lsect->section->size += 4;
2742 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2743 lsect->name, (long) linker_section_ptr->offset,
2744 (long) lsect->section->size);
2750 static struct plt_entry **
2751 update_local_sym_info (bfd *abfd,
2752 Elf_Internal_Shdr *symtab_hdr,
2753 unsigned long r_symndx,
2756 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2757 struct plt_entry **local_plt;
2758 unsigned char *local_got_tls_masks;
2760 if (local_got_refcounts == NULL)
2762 bfd_size_type size = symtab_hdr->sh_info;
2764 size *= (sizeof (*local_got_refcounts)
2765 + sizeof (*local_plt)
2766 + sizeof (*local_got_tls_masks));
2767 local_got_refcounts = bfd_zalloc (abfd, size);
2768 if (local_got_refcounts == NULL)
2770 elf_local_got_refcounts (abfd) = local_got_refcounts;
2773 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
2774 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
2775 local_got_tls_masks[r_symndx] |= tls_type & 0xff;
2776 if ((tls_type & NON_GOT) == 0)
2777 local_got_refcounts[r_symndx] += 1;
2778 return local_plt + r_symndx;
2782 update_plt_info (bfd *abfd, struct plt_entry **plist,
2783 asection *sec, bfd_vma addend)
2785 struct plt_entry *ent;
2789 for (ent = *plist; ent != NULL; ent = ent->next)
2790 if (ent->sec == sec && ent->addend == addend)
2794 bfd_size_type amt = sizeof (*ent);
2795 ent = bfd_alloc (abfd, amt);
2800 ent->addend = addend;
2801 ent->plt.refcount = 0;
2804 ent->plt.refcount += 1;
2808 static struct plt_entry *
2809 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
2811 struct plt_entry *ent;
2815 for (ent = *plist; ent != NULL; ent = ent->next)
2816 if (ent->sec == sec && ent->addend == addend)
2822 is_branch_reloc (enum elf_ppc_reloc_type r_type)
2824 return (r_type == R_PPC_PLTREL24
2825 || r_type == R_PPC_LOCAL24PC
2826 || r_type == R_PPC_REL24
2827 || r_type == R_PPC_REL14
2828 || r_type == R_PPC_REL14_BRTAKEN
2829 || r_type == R_PPC_REL14_BRNTAKEN
2830 || r_type == R_PPC_ADDR24
2831 || r_type == R_PPC_ADDR14
2832 || r_type == R_PPC_ADDR14_BRTAKEN
2833 || r_type == R_PPC_ADDR14_BRNTAKEN
2834 || r_type == R_PPC_VLE_REL24);
2837 /* Relocs on inline plt call sequence insns prior to the call. */
2840 is_plt_seq_reloc (enum elf_ppc_reloc_type r_type)
2842 return (r_type == R_PPC_PLT16_HA
2843 || r_type == R_PPC_PLT16_HI
2844 || r_type == R_PPC_PLT16_LO
2845 || r_type == R_PPC_PLTSEQ);
2849 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2852 /* xgettext:c-format */
2853 (_("%pB: relocation %s cannot be used when making a shared object"),
2855 ppc_elf_howto_table[r_type]->name);
2856 bfd_set_error (bfd_error_bad_value);
2859 /* Look through the relocs for a section during the first phase, and
2860 allocate space in the global offset table or procedure linkage
2864 ppc_elf_check_relocs (bfd *abfd,
2865 struct bfd_link_info *info,
2867 const Elf_Internal_Rela *relocs)
2869 struct ppc_elf_link_hash_table *htab;
2870 Elf_Internal_Shdr *symtab_hdr;
2871 struct elf_link_hash_entry **sym_hashes;
2872 const Elf_Internal_Rela *rel;
2873 const Elf_Internal_Rela *rel_end;
2874 asection *got2, *sreloc;
2875 struct elf_link_hash_entry *tga;
2877 if (bfd_link_relocatable (info))
2880 /* Don't do anything special with non-loaded, non-alloced sections.
2881 In particular, any relocs in such sections should not affect GOT
2882 and PLT reference counting (ie. we don't allow them to create GOT
2883 or PLT entries), there's no possibility or desire to optimize TLS
2884 relocs, and there's not much point in propagating relocs to shared
2885 libs that the dynamic linker won't relocate. */
2886 if ((sec->flags & SEC_ALLOC) == 0)
2890 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
2894 BFD_ASSERT (is_ppc_elf (abfd));
2896 /* Initialize howto table if not already done. */
2897 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2898 ppc_elf_howto_init ();
2900 htab = ppc_elf_hash_table (info);
2901 if (htab->glink == NULL)
2903 if (htab->elf.dynobj == NULL)
2904 htab->elf.dynobj = abfd;
2905 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
2908 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
2909 FALSE, FALSE, TRUE);
2910 symtab_hdr = &elf_symtab_hdr (abfd);
2911 sym_hashes = elf_sym_hashes (abfd);
2912 got2 = bfd_get_section_by_name (abfd, ".got2");
2915 rel_end = relocs + sec->reloc_count;
2916 for (rel = relocs; rel < rel_end; rel++)
2918 unsigned long r_symndx;
2919 enum elf_ppc_reloc_type r_type;
2920 struct elf_link_hash_entry *h;
2922 struct plt_entry **ifunc;
2923 struct plt_entry **pltent;
2926 r_symndx = ELF32_R_SYM (rel->r_info);
2927 if (r_symndx < symtab_hdr->sh_info)
2931 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2932 while (h->root.type == bfd_link_hash_indirect
2933 || h->root.type == bfd_link_hash_warning)
2934 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2937 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2938 This shows up in particular in an R_PPC_ADDR32 in the eabi
2941 && htab->elf.sgot == NULL
2942 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2944 if (htab->elf.dynobj == NULL)
2945 htab->elf.dynobj = abfd;
2946 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2948 BFD_ASSERT (h == htab->elf.hgot);
2952 r_type = ELF32_R_TYPE (rel->r_info);
2954 if (h == NULL && !htab->is_vxworks)
2956 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2961 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2963 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
2964 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
2965 NON_GOT | PLT_IFUNC);
2969 /* STT_GNU_IFUNC symbols must have a PLT entry;
2970 In a non-pie executable even when there are
2972 if (!bfd_link_pic (info)
2973 || is_branch_reloc (r_type)
2974 || r_type == R_PPC_PLT16_LO
2975 || r_type == R_PPC_PLT16_HI
2976 || r_type == R_PPC_PLT16_HA)
2979 if (r_type == R_PPC_PLTREL24)
2980 ppc_elf_tdata (abfd)->makes_plt_call = 1;
2981 if (bfd_link_pic (info)
2982 && (r_type == R_PPC_PLTREL24
2983 || r_type == R_PPC_PLT16_LO
2984 || r_type == R_PPC_PLT16_HI
2985 || r_type == R_PPC_PLT16_HA))
2986 addend = rel->r_addend;
2987 if (!update_plt_info (abfd, ifunc, got2, addend))
2993 if (!htab->is_vxworks
2994 && is_branch_reloc (r_type)
2999 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3000 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3001 /* We have a new-style __tls_get_addr call with a marker
3005 /* Mark this section as having an old-style call. */
3006 sec->has_tls_get_addr_call = 1;
3013 /* These special tls relocs tie a call to __tls_get_addr with
3014 its parameter symbol. */
3016 ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
3018 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3019 NON_GOT | TLS_TLS | TLS_MARK))
3026 case R_PPC_GOT_TLSLD16:
3027 case R_PPC_GOT_TLSLD16_LO:
3028 case R_PPC_GOT_TLSLD16_HI:
3029 case R_PPC_GOT_TLSLD16_HA:
3030 tls_type = TLS_TLS | TLS_LD;
3033 case R_PPC_GOT_TLSGD16:
3034 case R_PPC_GOT_TLSGD16_LO:
3035 case R_PPC_GOT_TLSGD16_HI:
3036 case R_PPC_GOT_TLSGD16_HA:
3037 tls_type = TLS_TLS | TLS_GD;
3040 case R_PPC_GOT_TPREL16:
3041 case R_PPC_GOT_TPREL16_LO:
3042 case R_PPC_GOT_TPREL16_HI:
3043 case R_PPC_GOT_TPREL16_HA:
3044 if (bfd_link_dll (info))
3045 info->flags |= DF_STATIC_TLS;
3046 tls_type = TLS_TLS | TLS_TPREL;
3049 case R_PPC_GOT_DTPREL16:
3050 case R_PPC_GOT_DTPREL16_LO:
3051 case R_PPC_GOT_DTPREL16_HI:
3052 case R_PPC_GOT_DTPREL16_HA:
3053 tls_type = TLS_TLS | TLS_DTPREL;
3055 sec->has_tls_reloc = 1;
3058 /* GOT16 relocations */
3060 case R_PPC_GOT16_LO:
3061 case R_PPC_GOT16_HI:
3062 case R_PPC_GOT16_HA:
3063 /* This symbol requires a global offset table entry. */
3064 if (htab->elf.sgot == NULL)
3066 if (htab->elf.dynobj == NULL)
3067 htab->elf.dynobj = abfd;
3068 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3073 h->got.refcount += 1;
3074 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3077 /* This is a global offset table entry for a local symbol. */
3078 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3081 /* We may also need a plt entry if the symbol turns out to be
3083 if (h != NULL && !bfd_link_pic (info))
3085 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3090 /* Indirect .sdata relocation. */
3091 case R_PPC_EMB_SDAI16:
3092 if (bfd_link_pic (info))
3094 bad_shared_reloc (abfd, r_type);
3097 htab->sdata[0].sym->ref_regular = 1;
3098 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
3103 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3104 h->non_got_ref = TRUE;
3108 /* Indirect .sdata2 relocation. */
3109 case R_PPC_EMB_SDA2I16:
3110 if (bfd_link_pic (info))
3112 bad_shared_reloc (abfd, r_type);
3115 htab->sdata[1].sym->ref_regular = 1;
3116 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
3121 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3122 h->non_got_ref = TRUE;
3126 case R_PPC_SDAREL16:
3127 htab->sdata[0].sym->ref_regular = 1;
3130 case R_PPC_VLE_SDAREL_LO16A:
3131 case R_PPC_VLE_SDAREL_LO16D:
3132 case R_PPC_VLE_SDAREL_HI16A:
3133 case R_PPC_VLE_SDAREL_HI16D:
3134 case R_PPC_VLE_SDAREL_HA16A:
3135 case R_PPC_VLE_SDAREL_HA16D:
3138 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3139 h->non_got_ref = TRUE;
3143 case R_PPC_VLE_REL8:
3144 case R_PPC_VLE_REL15:
3145 case R_PPC_VLE_REL24:
3146 case R_PPC_VLE_LO16A:
3147 case R_PPC_VLE_LO16D:
3148 case R_PPC_VLE_HI16A:
3149 case R_PPC_VLE_HI16D:
3150 case R_PPC_VLE_HA16A:
3151 case R_PPC_VLE_HA16D:
3152 case R_PPC_VLE_ADDR20:
3155 case R_PPC_EMB_SDA2REL:
3156 if (bfd_link_pic (info))
3158 bad_shared_reloc (abfd, r_type);
3161 htab->sdata[1].sym->ref_regular = 1;
3164 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3165 h->non_got_ref = TRUE;
3169 case R_PPC_VLE_SDA21_LO:
3170 case R_PPC_VLE_SDA21:
3171 case R_PPC_EMB_SDA21:
3172 case R_PPC_EMB_RELSDA:
3173 if (bfd_link_pic (info))
3175 bad_shared_reloc (abfd, r_type);
3180 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3181 h->non_got_ref = TRUE;
3185 case R_PPC_EMB_NADDR32:
3186 case R_PPC_EMB_NADDR16:
3187 case R_PPC_EMB_NADDR16_LO:
3188 case R_PPC_EMB_NADDR16_HI:
3189 case R_PPC_EMB_NADDR16_HA:
3190 if (bfd_link_pic (info))
3192 bad_shared_reloc (abfd, r_type);
3196 h->non_got_ref = TRUE;
3199 case R_PPC_PLTREL24:
3202 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3206 sec->has_pltcall = 1;
3210 case R_PPC_PLTREL32:
3211 case R_PPC_PLT16_LO:
3212 case R_PPC_PLT16_HI:
3213 case R_PPC_PLT16_HA:
3216 fprintf (stderr, "Reloc requires a PLT entry\n");
3218 /* This symbol requires a procedure linkage table entry. */
3221 pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3222 NON_GOT | PLT_KEEP);
3228 if (r_type != R_PPC_PLTREL24)
3229 ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP;
3231 pltent = &h->plt.plist;
3234 if (bfd_link_pic (info)
3235 && (r_type == R_PPC_PLTREL24
3236 || r_type == R_PPC_PLT16_LO
3237 || r_type == R_PPC_PLT16_HI
3238 || r_type == R_PPC_PLT16_HA))
3239 addend = rel->r_addend;
3240 if (!update_plt_info (abfd, pltent, got2, addend))
3244 /* The following relocations don't need to propagate the
3245 relocation if linking a shared object since they are
3246 section relative. */
3248 case R_PPC_SECTOFF_LO:
3249 case R_PPC_SECTOFF_HI:
3250 case R_PPC_SECTOFF_HA:
3251 case R_PPC_DTPREL16:
3252 case R_PPC_DTPREL16_LO:
3253 case R_PPC_DTPREL16_HI:
3254 case R_PPC_DTPREL16_HA:
3259 case R_PPC_REL16_LO:
3260 case R_PPC_REL16_HI:
3261 case R_PPC_REL16_HA:
3262 case R_PPC_REL16DX_HA:
3263 ppc_elf_tdata (abfd)->has_rel16 = 1;
3266 /* These are just markers. */
3268 case R_PPC_EMB_MRKREF:
3272 case R_PPC_RELAX_PLT:
3273 case R_PPC_RELAX_PLTREL24:
3277 /* These should only appear in dynamic objects. */
3279 case R_PPC_GLOB_DAT:
3280 case R_PPC_JMP_SLOT:
3281 case R_PPC_RELATIVE:
3282 case R_PPC_IRELATIVE:
3285 /* These aren't handled yet. We'll report an error later. */
3287 case R_PPC_EMB_RELSEC16:
3288 case R_PPC_EMB_RELST_LO:
3289 case R_PPC_EMB_RELST_HI:
3290 case R_PPC_EMB_RELST_HA:
3291 case R_PPC_EMB_BIT_FLD:
3294 /* This refers only to functions defined in the shared library. */
3295 case R_PPC_LOCAL24PC:
3296 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3298 htab->plt_type = PLT_OLD;
3299 htab->old_bfd = abfd;
3301 if (h != NULL && h->type == STT_GNU_IFUNC)
3304 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3309 /* This relocation describes the C++ object vtable hierarchy.
3310 Reconstruct it for later use during GC. */
3311 case R_PPC_GNU_VTINHERIT:
3312 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3316 /* This relocation describes which C++ vtable entries are actually
3317 used. Record for later use during GC. */
3318 case R_PPC_GNU_VTENTRY:
3319 BFD_ASSERT (h != NULL);
3321 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3325 /* We shouldn't really be seeing TPREL32. */
3328 case R_PPC_TPREL16_LO:
3329 case R_PPC_TPREL16_HI:
3330 case R_PPC_TPREL16_HA:
3331 if (bfd_link_dll (info))
3332 info->flags |= DF_STATIC_TLS;
3336 case R_PPC_DTPMOD32:
3337 case R_PPC_DTPREL32:
3343 && (sec->flags & SEC_CODE) != 0
3344 && bfd_link_pic (info)
3345 && htab->plt_type == PLT_UNSET)
3347 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3348 the start of a function, which assembles to a REL32
3349 reference to .got2. If we detect one of these, then
3350 force the old PLT layout because the linker cannot
3351 reliably deduce the GOT pointer value needed for
3354 Elf_Internal_Sym *isym;
3356 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3361 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3364 htab->plt_type = PLT_OLD;
3365 htab->old_bfd = abfd;
3368 if (h == NULL || h == htab->elf.hgot)
3374 case R_PPC_ADDR16_LO:
3375 case R_PPC_ADDR16_HI:
3376 case R_PPC_ADDR16_HA:
3379 if (h != NULL && !bfd_link_pic (info))
3381 /* We may need a plt entry if the symbol turns out to be
3382 a function defined in a dynamic object. */
3383 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3386 /* We may need a copy reloc too. */
3388 h->pointer_equality_needed = 1;
3389 if (r_type == R_PPC_ADDR16_HA)
3390 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
3391 if (r_type == R_PPC_ADDR16_LO)
3392 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
3398 case R_PPC_REL14_BRTAKEN:
3399 case R_PPC_REL14_BRNTAKEN:
3402 if (h == htab->elf.hgot)
3404 if (htab->plt_type == PLT_UNSET)
3406 htab->plt_type = PLT_OLD;
3407 htab->old_bfd = abfd;
3415 case R_PPC_ADDR14_BRTAKEN:
3416 case R_PPC_ADDR14_BRNTAKEN:
3417 if (h != NULL && !bfd_link_pic (info))
3419 /* We may need a plt entry if the symbol turns out to be
3420 a function defined in a dynamic object. */
3422 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3428 /* If we are creating a shared library, and this is a reloc
3429 against a global symbol, or a non PC relative reloc
3430 against a local symbol, then we need to copy the reloc
3431 into the shared library. However, if we are linking with
3432 -Bsymbolic, we do not need to copy a reloc against a
3433 global symbol which is defined in an object we are
3434 including in the link (i.e., DEF_REGULAR is set). At
3435 this point we have not seen all the input files, so it is
3436 possible that DEF_REGULAR is not set now but will be set
3437 later (it is never cleared). In case of a weak definition,
3438 DEF_REGULAR may be cleared later by a strong definition in
3439 a shared library. We account for that possibility below by
3440 storing information in the dyn_relocs field of the hash
3441 table entry. A similar situation occurs when creating
3442 shared libraries and symbol visibility changes render the
3445 If on the other hand, we are creating an executable, we
3446 may need to keep relocations for symbols satisfied by a
3447 dynamic library if we manage to avoid copy relocs for the
3449 if ((bfd_link_pic (info)
3450 && (must_be_dyn_reloc (info, r_type)
3452 && (!SYMBOLIC_BIND (info, h)
3453 || h->root.type == bfd_link_hash_defweak
3454 || !h->def_regular))))
3455 || (ELIMINATE_COPY_RELOCS
3456 && !bfd_link_pic (info)
3458 && (h->root.type == bfd_link_hash_defweak
3459 || !h->def_regular)))
3463 "ppc_elf_check_relocs needs to "
3464 "create relocation for %s\n",
3465 (h && h->root.root.string
3466 ? h->root.root.string : "<unknown>"));
3470 if (htab->elf.dynobj == NULL)
3471 htab->elf.dynobj = abfd;
3473 sreloc = _bfd_elf_make_dynamic_reloc_section
3474 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3480 /* If this is a global symbol, we count the number of
3481 relocations we need for this symbol. */
3484 struct elf_dyn_relocs *p;
3485 struct elf_dyn_relocs **rel_head;
3487 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3489 if (p == NULL || p->sec != sec)
3491 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3494 p->next = *rel_head;
3501 if (!must_be_dyn_reloc (info, r_type))
3506 /* Track dynamic relocs needed for local syms too.
3507 We really need local syms available to do this
3509 struct ppc_dyn_relocs *p;
3510 struct ppc_dyn_relocs **rel_head;
3511 bfd_boolean is_ifunc;
3514 Elf_Internal_Sym *isym;
3516 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3521 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3525 vpp = &elf_section_data (s)->local_dynrel;
3526 rel_head = (struct ppc_dyn_relocs **) vpp;
3527 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
3529 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
3531 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
3533 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3536 p->next = *rel_head;
3539 p->ifunc = is_ifunc;
3553 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
3554 and OBFD, and merge non-conflicting ones. */
3556 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
3558 bfd *obfd = info->output_bfd;
3559 obj_attribute *in_attr, *in_attrs;
3560 obj_attribute *out_attr, *out_attrs;
3561 bfd_boolean ret = TRUE;
3563 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3564 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3566 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3567 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3569 if (in_attr->i != out_attr->i)
3571 int in_fp = in_attr->i & 3;
3572 int out_fp = out_attr->i & 3;
3573 static bfd *last_fp, *last_ld;
3577 else if (out_fp == 0)
3579 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3580 out_attr->i ^= in_fp;
3583 else if (out_fp != 2 && in_fp == 2)
3586 /* xgettext:c-format */
3587 (_("%pB uses hard float, %pB uses soft float"),
3591 else if (out_fp == 2 && in_fp != 2)
3594 /* xgettext:c-format */
3595 (_("%pB uses hard float, %pB uses soft float"),
3599 else if (out_fp == 1 && in_fp == 3)
3602 /* xgettext:c-format */
3603 (_("%pB uses double-precision hard float, "
3604 "%pB uses single-precision hard float"), last_fp, ibfd);
3607 else if (out_fp == 3 && in_fp == 1)
3610 /* xgettext:c-format */
3611 (_("%pB uses double-precision hard float, "
3612 "%pB uses single-precision hard float"), ibfd, last_fp);
3616 in_fp = in_attr->i & 0xc;
3617 out_fp = out_attr->i & 0xc;
3620 else if (out_fp == 0)
3622 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3623 out_attr->i ^= in_fp;
3626 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
3629 /* xgettext:c-format */
3630 (_("%pB uses 64-bit long double, "
3631 "%pB uses 128-bit long double"), ibfd, last_ld);
3634 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
3637 /* xgettext:c-format */
3638 (_("%pB uses 64-bit long double, "
3639 "%pB uses 128-bit long double"), last_ld, ibfd);
3642 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
3645 /* xgettext:c-format */
3646 (_("%pB uses IBM long double, "
3647 "%pB uses IEEE long double"), last_ld, ibfd);
3650 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
3653 /* xgettext:c-format */
3654 (_("%pB uses IBM long double, "
3655 "%pB uses IEEE long double"), ibfd, last_ld);
3662 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3663 bfd_set_error (bfd_error_bad_value);
3668 /* Merge object attributes from IBFD into OBFD. Warn if
3669 there are conflicting attributes. */
3671 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
3674 obj_attribute *in_attr, *in_attrs;
3675 obj_attribute *out_attr, *out_attrs;
3678 if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info))
3681 obfd = info->output_bfd;
3682 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3683 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3685 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3686 merge non-conflicting ones. */
3687 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3688 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3690 if (in_attr->i != out_attr->i)
3692 int in_vec = in_attr->i & 3;
3693 int out_vec = out_attr->i & 3;
3694 static bfd *last_vec;
3698 else if (out_vec == 0)
3700 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3701 out_attr->i = in_vec;
3704 /* For now, allow generic to transition to AltiVec or SPE
3705 without a warning. If GCC marked files with their stack
3706 alignment and used don't-care markings for files which are
3707 not affected by the vector ABI, we could warn about this
3709 else if (in_vec == 1)
3711 else if (out_vec == 1)
3713 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3714 out_attr->i = in_vec;
3717 else if (out_vec < in_vec)
3720 /* xgettext:c-format */
3721 (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
3723 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3726 else if (out_vec > in_vec)
3729 /* xgettext:c-format */
3730 (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
3732 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3737 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
3738 and merge non-conflicting ones. */
3739 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
3740 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
3741 if (in_attr->i != out_attr->i)
3743 int in_struct = in_attr->i & 3;
3744 int out_struct = out_attr->i & 3;
3745 static bfd *last_struct;
3747 if (in_struct == 0 || in_struct == 3)
3749 else if (out_struct == 0)
3751 out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
3752 out_attr->i = in_struct;
3755 else if (out_struct < in_struct)
3758 /* xgettext:c-format */
3759 (_("%pB uses r3/r4 for small structure returns, "
3760 "%pB uses memory"), last_struct, ibfd);
3761 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3764 else if (out_struct > in_struct)
3767 /* xgettext:c-format */
3768 (_("%pB uses r3/r4 for small structure returns, "
3769 "%pB uses memory"), ibfd, last_struct);
3770 out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
3776 bfd_set_error (bfd_error_bad_value);
3780 /* Merge Tag_compatibility attributes and any common GNU ones. */
3781 return _bfd_elf_merge_object_attributes (ibfd, info);
3784 /* Merge backend specific data from an object file to the output
3785 object file when linking. */
3788 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3790 bfd *obfd = info->output_bfd;
3795 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
3798 /* Check if we have the same endianness. */
3799 if (! _bfd_generic_verify_endian_match (ibfd, info))
3802 if (!ppc_elf_merge_obj_attributes (ibfd, info))
3805 new_flags = elf_elfheader (ibfd)->e_flags;
3806 old_flags = elf_elfheader (obfd)->e_flags;
3807 if (!elf_flags_init (obfd))
3809 /* First call, no flags set. */
3810 elf_flags_init (obfd) = TRUE;
3811 elf_elfheader (obfd)->e_flags = new_flags;
3814 /* Compatible flags are ok. */
3815 else if (new_flags == old_flags)
3818 /* Incompatible flags. */
3821 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3822 to be linked with either. */
3824 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3825 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3829 (_("%pB: compiled with -mrelocatable and linked with "
3830 "modules compiled normally"), ibfd);
3832 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3833 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3837 (_("%pB: compiled normally and linked with "
3838 "modules compiled with -mrelocatable"), ibfd);
3841 /* The output is -mrelocatable-lib iff both the input files are. */
3842 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3843 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3845 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3846 but each input file is either -mrelocatable or -mrelocatable-lib. */
3847 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3848 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3849 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3850 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3852 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3853 any module uses it. */
3854 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3856 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3857 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3859 /* Warn about any other mismatches. */
3860 if (new_flags != old_flags)
3864 /* xgettext:c-format */
3865 (_("%pB: uses different e_flags (%#x) fields "
3866 "than previous modules (%#x)"),
3867 ibfd, new_flags, old_flags);
3872 bfd_set_error (bfd_error_bad_value);
3881 ppc_elf_vle_split16 (bfd *input_bfd,
3882 asection *input_section,
3883 unsigned long offset,
3886 split16_format_type split16_format,
3889 unsigned int insn, opcode, top5;
3891 insn = bfd_get_32 (input_bfd, loc);
3892 opcode = insn & 0xfc00f800;
3893 if (opcode == E_OR2I_INSN
3894 || opcode == E_AND2I_DOT_INSN
3895 || opcode == E_OR2IS_INSN
3896 || opcode == E_LIS_INSN
3897 || opcode == E_AND2IS_DOT_INSN)
3899 if (split16_format != split16a_type)
3902 split16_format = split16a_type;
3905 /* xgettext:c-format */
3906 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
3907 input_bfd, input_section, offset, opcode);
3910 else if (opcode == E_ADD2I_DOT_INSN
3911 || opcode == E_ADD2IS_INSN
3912 || opcode == E_CMP16I_INSN
3913 || opcode == E_MULL2I_INSN
3914 || opcode == E_CMPL16I_INSN
3915 || opcode == E_CMPH16I_INSN
3916 || opcode == E_CMPHL16I_INSN)
3918 if (split16_format != split16d_type)
3921 split16_format = split16d_type;
3924 /* xgettext:c-format */
3925 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
3926 input_bfd, input_section, offset, opcode);
3929 top5 = value & 0xf800;
3930 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
3931 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
3933 insn |= value & 0x7ff;
3934 bfd_put_32 (input_bfd, insn, loc);
3938 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
3942 insn = bfd_get_32 (output_bfd, loc);
3943 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
3944 /* Top 4 bits of value to 17..20. */
3945 insn |= (value & 0xf0000) >> 5;
3946 /* Next 5 bits of the value to 11..15. */
3947 insn |= (value & 0xf800) << 5;
3948 /* And the final 11 bits of the value to bits 21 to 31. */
3949 insn |= value & 0x7ff;
3950 bfd_put_32 (output_bfd, insn, loc);
3954 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3955 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3957 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3958 struct bfd_link_info *info)
3960 struct ppc_elf_link_hash_table *htab;
3963 htab = ppc_elf_hash_table (info);
3965 if (htab->plt_type == PLT_UNSET)
3967 struct elf_link_hash_entry *h;
3969 if (htab->params->plt_style == PLT_OLD)
3970 htab->plt_type = PLT_OLD;
3971 else if (bfd_link_pic (info)
3972 && htab->elf.dynamic_sections_created
3973 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
3974 FALSE, FALSE, TRUE)) != NULL
3975 && (h->type == STT_FUNC
3978 && !(SYMBOL_CALLS_LOCAL (info, h)
3979 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
3981 /* Profiling of shared libs (and pies) is not supported with
3982 secure plt, because ppc32 does profiling before a
3983 function prologue and a secure plt pic call stubs needs
3984 r30 to be set up. */
3985 htab->plt_type = PLT_OLD;
3990 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
3992 /* Look through the reloc flags left by ppc_elf_check_relocs.
3993 Use the old style bss plt if a file makes plt calls
3994 without using the new relocs, and if ld isn't given
3995 --secure-plt and we never see REL16 relocs. */
3996 if (plt_type == PLT_UNSET)
3998 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
3999 if (is_ppc_elf (ibfd))
4001 if (ppc_elf_tdata (ibfd)->has_rel16)
4003 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4006 htab->old_bfd = ibfd;
4010 htab->plt_type = plt_type;
4013 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4015 if (htab->old_bfd != NULL)
4016 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
4018 _bfd_error_handler (_("bss-plt forced by profiling"));
4021 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4023 if (htab->plt_type == PLT_NEW)
4025 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4026 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4028 /* The new PLT is a loaded section. */
4029 if (htab->elf.splt != NULL
4030 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
4033 /* The new GOT is not executable. */
4034 if (htab->elf.sgot != NULL
4035 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
4040 /* Stop an unused .glink section from affecting .text alignment. */
4041 if (htab->glink != NULL
4042 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4045 return htab->plt_type == PLT_NEW;
4048 /* Return the section that should be marked against GC for a given
4052 ppc_elf_gc_mark_hook (asection *sec,
4053 struct bfd_link_info *info,
4054 Elf_Internal_Rela *rel,
4055 struct elf_link_hash_entry *h,
4056 Elf_Internal_Sym *sym)
4059 switch (ELF32_R_TYPE (rel->r_info))
4061 case R_PPC_GNU_VTINHERIT:
4062 case R_PPC_GNU_VTENTRY:
4066 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4070 get_sym_h (struct elf_link_hash_entry **hp,
4071 Elf_Internal_Sym **symp,
4073 unsigned char **tls_maskp,
4074 Elf_Internal_Sym **locsymsp,
4075 unsigned long r_symndx,
4078 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4080 if (r_symndx >= symtab_hdr->sh_info)
4082 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4083 struct elf_link_hash_entry *h;
4085 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4086 while (h->root.type == bfd_link_hash_indirect
4087 || h->root.type == bfd_link_hash_warning)
4088 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4096 if (symsecp != NULL)
4098 asection *symsec = NULL;
4099 if (h->root.type == bfd_link_hash_defined
4100 || h->root.type == bfd_link_hash_defweak)
4101 symsec = h->root.u.def.section;
4105 if (tls_maskp != NULL)
4106 *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask;
4110 Elf_Internal_Sym *sym;
4111 Elf_Internal_Sym *locsyms = *locsymsp;
4113 if (locsyms == NULL)
4115 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4116 if (locsyms == NULL)
4117 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4118 symtab_hdr->sh_info,
4119 0, NULL, NULL, NULL);
4120 if (locsyms == NULL)
4122 *locsymsp = locsyms;
4124 sym = locsyms + r_symndx;
4132 if (symsecp != NULL)
4133 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4135 if (tls_maskp != NULL)
4137 bfd_signed_vma *local_got;
4138 unsigned char *tls_mask;
4141 local_got = elf_local_got_refcounts (ibfd);
4142 if (local_got != NULL)
4144 struct plt_entry **local_plt = (struct plt_entry **)
4145 (local_got + symtab_hdr->sh_info);
4146 unsigned char *lgot_masks = (unsigned char *)
4147 (local_plt + symtab_hdr->sh_info);
4148 tls_mask = &lgot_masks[r_symndx];
4150 *tls_maskp = tls_mask;
4156 /* Analyze inline PLT call relocations to see whether calls to locally
4157 defined functions can be converted to direct calls. */
4160 ppc_elf_inline_plt (struct bfd_link_info *info)
4162 struct ppc_elf_link_hash_table *htab;
4165 bfd_vma low_vma, high_vma, limit;
4167 htab = ppc_elf_hash_table (info);
4171 /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is
4172 reduced somewhat to cater for possible stubs that might be added
4173 between the call and its destination. */
4177 for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next)
4178 if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE))
4180 if (low_vma > sec->vma)
4182 if (high_vma < sec->vma + sec->size)
4183 high_vma = sec->vma + sec->size;
4186 /* If a "bl" can reach anywhere in local code sections, then we can
4187 convert all inline PLT sequences to direct calls when the symbol
4189 if (high_vma - low_vma < limit)
4191 htab->can_convert_all_inline_plt = 1;
4195 /* Otherwise, go looking through relocs for cases where a direct
4196 call won't reach. Mark the symbol on any such reloc to disable
4197 the optimization and keep the PLT entry as it seems likely that
4198 this will be better than creating trampolines. Note that this
4199 will disable the optimization for all inline PLT calls to a
4200 particular symbol, not just those that won't reach. The
4201 difficulty in doing a more precise optimization is that the
4202 linker needs to make a decision depending on whether a
4203 particular R_PPC_PLTCALL insn can be turned into a direct
4204 call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in
4205 the sequence, and there is nothing that ties those relocs
4206 together except their symbol. */
4208 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4210 Elf_Internal_Shdr *symtab_hdr;
4211 Elf_Internal_Sym *local_syms;
4213 if (!is_ppc_elf (ibfd))
4217 symtab_hdr = &elf_symtab_hdr (ibfd);
4219 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4220 if (sec->has_pltcall
4221 && !bfd_is_abs_section (sec->output_section))
4223 Elf_Internal_Rela *relstart, *rel, *relend;
4225 /* Read the relocations. */
4226 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4228 if (relstart == NULL)
4231 relend = relstart + sec->reloc_count;
4232 for (rel = relstart; rel < relend; )
4234 enum elf_ppc_reloc_type r_type;
4235 unsigned long r_symndx;
4237 struct elf_link_hash_entry *h;
4238 Elf_Internal_Sym *sym;
4239 unsigned char *tls_maskp;
4241 r_type = ELF32_R_TYPE (rel->r_info);
4242 if (r_type != R_PPC_PLTCALL)
4245 r_symndx = ELF32_R_SYM (rel->r_info);
4246 if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms,
4249 if (elf_section_data (sec)->relocs != relstart)
4251 if (local_syms != NULL
4252 && symtab_hdr->contents != (unsigned char *) local_syms)
4257 if (sym_sec != NULL && sym_sec->output_section != NULL)
4261 to = h->root.u.def.value;
4264 to += (rel->r_addend
4265 + sym_sec->output_offset
4266 + sym_sec->output_section->vma);
4267 from = (rel->r_offset
4268 + sec->output_offset
4269 + sec->output_section->vma);
4270 if (to - from + limit < 2 * limit)
4271 *tls_maskp &= ~PLT_KEEP;
4274 if (elf_section_data (sec)->relocs != relstart)
4278 if (local_syms != NULL
4279 && symtab_hdr->contents != (unsigned char *) local_syms)
4281 if (!info->keep_memory)
4284 symtab_hdr->contents = (unsigned char *) local_syms;
4291 /* Set plt output section type, htab->tls_get_addr, and call the
4292 generic ELF tls_setup function. */
4295 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4297 struct ppc_elf_link_hash_table *htab;
4299 htab = ppc_elf_hash_table (info);
4300 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4301 FALSE, FALSE, TRUE);
4302 if (htab->plt_type != PLT_NEW)
4303 htab->params->no_tls_get_addr_opt = TRUE;
4305 if (!htab->params->no_tls_get_addr_opt)
4307 struct elf_link_hash_entry *opt, *tga;
4308 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4309 FALSE, FALSE, TRUE);
4311 && (opt->root.type == bfd_link_hash_defined
4312 || opt->root.type == bfd_link_hash_defweak))
4314 /* If glibc supports an optimized __tls_get_addr call stub,
4315 signalled by the presence of __tls_get_addr_opt, and we'll
4316 be calling __tls_get_addr via a plt call stub, then
4317 make __tls_get_addr point to __tls_get_addr_opt. */
4318 tga = htab->tls_get_addr;
4319 if (htab->elf.dynamic_sections_created
4321 && (tga->type == STT_FUNC
4323 && !(SYMBOL_CALLS_LOCAL (info, tga)
4324 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
4326 struct plt_entry *ent;
4327 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4328 if (ent->plt.refcount > 0)
4332 tga->root.type = bfd_link_hash_indirect;
4333 tga->root.u.i.link = &opt->root;
4334 ppc_elf_copy_indirect_symbol (info, opt, tga);
4336 if (opt->dynindx != -1)
4338 /* Use __tls_get_addr_opt in dynamic relocations. */
4340 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4342 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4345 htab->tls_get_addr = opt;
4350 htab->params->no_tls_get_addr_opt = TRUE;
4352 if (htab->plt_type == PLT_NEW
4353 && htab->elf.splt != NULL
4354 && htab->elf.splt->output_section != NULL)
4356 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
4357 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
4360 return _bfd_elf_tls_setup (obfd, info);
4363 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4367 branch_reloc_hash_match (const bfd *ibfd,
4368 const Elf_Internal_Rela *rel,
4369 const struct elf_link_hash_entry *hash)
4371 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4372 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4373 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4375 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4377 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4378 struct elf_link_hash_entry *h;
4380 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4381 while (h->root.type == bfd_link_hash_indirect
4382 || h->root.type == bfd_link_hash_warning)
4383 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4390 /* Run through all the TLS relocs looking for optimization
4394 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4395 struct bfd_link_info *info)
4399 struct ppc_elf_link_hash_table *htab;
4402 if (!bfd_link_executable (info))
4405 htab = ppc_elf_hash_table (info);
4409 /* Make two passes through the relocs. First time check that tls
4410 relocs involved in setting up a tls_get_addr call are indeed
4411 followed by such a call. If they are not, don't do any tls
4412 optimization. On the second pass twiddle tls_mask flags to
4413 notify relocate_section that optimization can be done, and
4414 adjust got and plt refcounts. */
4415 for (pass = 0; pass < 2; ++pass)
4416 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4418 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4419 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4421 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4422 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4424 Elf_Internal_Rela *relstart, *rel, *relend;
4425 int expecting_tls_get_addr = 0;
4427 /* Read the relocations. */
4428 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4430 if (relstart == NULL)
4433 relend = relstart + sec->reloc_count;
4434 for (rel = relstart; rel < relend; rel++)
4436 enum elf_ppc_reloc_type r_type;
4437 unsigned long r_symndx;
4438 struct elf_link_hash_entry *h = NULL;
4439 unsigned char *tls_mask;
4440 unsigned char tls_set, tls_clear;
4441 bfd_boolean is_local;
4442 bfd_signed_vma *got_count;
4444 r_symndx = ELF32_R_SYM (rel->r_info);
4445 if (r_symndx >= symtab_hdr->sh_info)
4447 struct elf_link_hash_entry **sym_hashes;
4449 sym_hashes = elf_sym_hashes (ibfd);
4450 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4451 while (h->root.type == bfd_link_hash_indirect
4452 || h->root.type == bfd_link_hash_warning)
4453 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4461 r_type = ELF32_R_TYPE (rel->r_info);
4462 /* If this section has old-style __tls_get_addr calls
4463 without marker relocs, then check that each
4464 __tls_get_addr call reloc is preceded by a reloc
4465 that conceivably belongs to the __tls_get_addr arg
4466 setup insn. If we don't find matching arg setup
4467 relocs, don't do any tls optimization. */
4469 && sec->has_tls_get_addr_call
4471 && h == htab->tls_get_addr
4472 && !expecting_tls_get_addr
4473 && is_branch_reloc (r_type))
4475 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
4476 "TLS optimization disabled\n",
4477 ibfd, sec, rel->r_offset);
4478 if (elf_section_data (sec)->relocs != relstart)
4483 expecting_tls_get_addr = 0;
4486 case R_PPC_GOT_TLSLD16:
4487 case R_PPC_GOT_TLSLD16_LO:
4488 expecting_tls_get_addr = 1;
4491 case R_PPC_GOT_TLSLD16_HI:
4492 case R_PPC_GOT_TLSLD16_HA:
4493 /* These relocs should never be against a symbol
4494 defined in a shared lib. Leave them alone if
4495 that turns out to be the case. */
4504 case R_PPC_GOT_TLSGD16:
4505 case R_PPC_GOT_TLSGD16_LO:
4506 expecting_tls_get_addr = 1;
4509 case R_PPC_GOT_TLSGD16_HI:
4510 case R_PPC_GOT_TLSGD16_HA:
4516 tls_set = TLS_TLS | TLS_TPRELGD;
4520 case R_PPC_GOT_TPREL16:
4521 case R_PPC_GOT_TPREL16_LO:
4522 case R_PPC_GOT_TPREL16_HI:
4523 case R_PPC_GOT_TPREL16_HA:
4528 tls_clear = TLS_TPREL;
4536 if (rel + 1 < relend
4537 && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
4540 && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ)
4542 r_type = ELF32_R_TYPE (rel[1].r_info);
4543 r_symndx = ELF32_R_SYM (rel[1].r_info);
4544 if (r_symndx >= symtab_hdr->sh_info)
4546 struct elf_link_hash_entry **sym_hashes;
4548 sym_hashes = elf_sym_hashes (ibfd);
4549 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4550 while (h->root.type == bfd_link_hash_indirect
4551 || h->root.type == bfd_link_hash_warning)
4552 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4555 struct plt_entry *ent = NULL;
4558 if (bfd_link_pic (info))
4559 addend = rel->r_addend;
4560 ent = find_plt_ent (&h->plt.plist,
4563 && ent->plt.refcount > 0)
4564 ent->plt.refcount -= 1;
4570 expecting_tls_get_addr = 2;
4581 if (!expecting_tls_get_addr
4582 || !sec->has_tls_get_addr_call)
4585 if (rel + 1 < relend
4586 && branch_reloc_hash_match (ibfd, rel + 1,
4587 htab->tls_get_addr))
4590 /* Uh oh, we didn't find the expected call. We
4591 could just mark this symbol to exclude it
4592 from tls optimization but it's safer to skip
4593 the entire optimization. */
4594 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
4595 "TLS optimization disabled\n"),
4596 ibfd, sec, rel->r_offset);
4597 if (elf_section_data (sec)->relocs != relstart)
4604 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4605 got_count = &h->got.refcount;
4609 bfd_signed_vma *lgot_refs;
4610 struct plt_entry **local_plt;
4611 unsigned char *lgot_masks;
4613 lgot_refs = elf_local_got_refcounts (ibfd);
4614 if (lgot_refs == NULL)
4616 local_plt = (struct plt_entry **)
4617 (lgot_refs + symtab_hdr->sh_info);
4618 lgot_masks = (unsigned char *)
4619 (local_plt + symtab_hdr->sh_info);
4620 tls_mask = &lgot_masks[r_symndx];
4621 got_count = &lgot_refs[r_symndx];
4624 /* If we don't have old-style __tls_get_addr calls
4625 without TLSGD/TLSLD marker relocs, and we haven't
4626 found a new-style __tls_get_addr call with a
4627 marker for this symbol, then we either have a
4628 broken object file or an -mlongcall style
4629 indirect call to __tls_get_addr without a marker.
4630 Disable optimization in this case. */
4631 if ((tls_clear & (TLS_GD | TLS_LD)) != 0
4632 && !sec->has_tls_get_addr_call
4633 && ((*tls_mask & (TLS_TLS | TLS_MARK))
4634 != (TLS_TLS | TLS_MARK)))
4637 if (expecting_tls_get_addr)
4639 struct plt_entry *ent;
4642 if (bfd_link_pic (info)
4643 && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24
4644 || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL))
4645 addend = rel[1].r_addend;
4646 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4648 if (ent != NULL && ent->plt.refcount > 0)
4649 ent->plt.refcount -= 1;
4651 if (expecting_tls_get_addr == 2)
4657 /* We managed to get rid of a got entry. */
4662 *tls_mask |= tls_set;
4663 *tls_mask &= ~tls_clear;
4666 if (elf_section_data (sec)->relocs != relstart)
4670 htab->do_tls_opt = 1;
4674 /* Find dynamic relocs for H that apply to read-only sections. */
4677 readonly_dynrelocs (struct elf_link_hash_entry *h)
4679 struct elf_dyn_relocs *p;
4681 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4683 asection *s = p->sec->output_section;
4685 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4691 /* Return true if we have dynamic relocs against H or any of its weak
4692 aliases, that apply to read-only sections. Cannot be used after
4693 size_dynamic_sections. */
4696 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
4698 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
4701 if (readonly_dynrelocs (&eh->elf))
4703 eh = ppc_elf_hash_entry (eh->elf.u.alias);
4704 } while (eh != NULL && &eh->elf != h);
4709 /* Return whether H has pc-relative dynamic relocs. */
4712 pc_dynrelocs (struct elf_link_hash_entry *h)
4714 struct elf_dyn_relocs *p;
4716 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4717 if (p->pc_count != 0)
4722 /* Adjust a symbol defined by a dynamic object and referenced by a
4723 regular object. The current definition is in some section of the
4724 dynamic object, but we're not including those sections. We have to
4725 change the definition to something the rest of the link can
4729 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4730 struct elf_link_hash_entry *h)
4732 struct ppc_elf_link_hash_table *htab;
4736 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4737 h->root.root.string);
4740 /* Make sure we know what is going on here. */
4741 htab = ppc_elf_hash_table (info);
4742 BFD_ASSERT (htab->elf.dynobj != NULL
4744 || h->type == STT_GNU_IFUNC
4748 && !h->def_regular)));
4750 /* Deal with function syms. */
4751 if (h->type == STT_FUNC
4752 || h->type == STT_GNU_IFUNC
4755 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
4756 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
4757 /* Discard dyn_relocs when non-pic if we've decided that a
4758 function symbol is local. */
4759 if (!bfd_link_pic (info) && local)
4760 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4762 /* Clear procedure linkage table information for any symbol that
4763 won't need a .plt entry. */
4764 struct plt_entry *ent;
4765 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4766 if (ent->plt.refcount > 0)
4769 || (h->type != STT_GNU_IFUNC
4771 && (htab->can_convert_all_inline_plt
4772 || (ppc_elf_hash_entry (h)->tls_mask
4773 & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)))
4775 /* A PLT entry is not required/allowed when:
4777 1. We are not using ld.so; because then the PLT entry
4778 can't be set up, so we can't use one. In this case,
4779 ppc_elf_adjust_dynamic_symbol won't even be called.
4781 2. GC has rendered the entry unused.
4783 3. We know for certain that a call to this symbol
4784 will go to this object, or will remain undefined. */
4785 h->plt.plist = NULL;
4787 h->pointer_equality_needed = 0;
4791 /* Taking a function's address in a read/write section
4792 doesn't require us to define the function symbol in the
4793 executable on a plt call stub. A dynamic reloc can
4794 be used instead, giving better runtime performance.
4795 (Calls via that function pointer don't need to bounce
4796 through the plt call stub.) Similarly, use a dynamic
4797 reloc for a weak reference when possible, allowing the
4798 resolution of the symbol to be set at load time rather
4800 if ((h->pointer_equality_needed
4802 && !h->ref_regular_nonweak
4803 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4804 && !htab->is_vxworks
4805 && !ppc_elf_hash_entry (h)->has_sda_refs
4806 && !readonly_dynrelocs (h))
4808 h->pointer_equality_needed = 0;
4809 /* If we haven't seen a branch reloc and the symbol
4810 isn't an ifunc then we don't need a plt entry. */
4811 if (!h->needs_plt && h->type != STT_GNU_IFUNC)
4812 h->plt.plist = NULL;
4814 else if (!bfd_link_pic (info))
4815 /* We are going to be defining the function symbol on the
4816 plt stub, so no dyn_relocs needed when non-pic. */
4817 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4819 h->protected_def = 0;
4820 /* Function symbols can't have copy relocs. */
4824 h->plt.plist = NULL;
4826 /* If this is a weak symbol, and there is a real definition, the
4827 processor independent code will have arranged for us to see the
4828 real definition first, and we can just use the same value. */
4829 if (h->is_weakalias)
4831 struct elf_link_hash_entry *def = weakdef (h);
4832 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
4833 h->root.u.def.section = def->root.u.def.section;
4834 h->root.u.def.value = def->root.u.def.value;
4835 if (def->root.u.def.section == htab->elf.sdynbss
4836 || def->root.u.def.section == htab->elf.sdynrelro
4837 || def->root.u.def.section == htab->dynsbss)
4838 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4842 /* This is a reference to a symbol defined by a dynamic object which
4843 is not a function. */
4845 /* If we are creating a shared library, we must presume that the
4846 only references to the symbol are via the global offset table.
4847 For such cases we need not do anything here; the relocations will
4848 be handled correctly by relocate_section. */
4849 if (bfd_link_pic (info))
4851 h->protected_def = 0;
4855 /* If there are no references to this symbol that do not use the
4856 GOT, we don't need to generate a copy reloc. */
4857 if (!h->non_got_ref)
4859 h->protected_def = 0;
4863 /* Protected variables do not work with .dynbss. The copy in
4864 .dynbss won't be used by the shared library with the protected
4865 definition for the variable. Editing to PIC, or text relocations
4866 are preferable to an incorrect program. */
4867 if (h->protected_def)
4869 if (ELIMINATE_COPY_RELOCS
4870 && ppc_elf_hash_entry (h)->has_addr16_ha
4871 && ppc_elf_hash_entry (h)->has_addr16_lo
4872 && htab->params->pic_fixup == 0
4873 && info->disable_target_specific_optimizations <= 1)
4874 htab->params->pic_fixup = 1;
4878 /* If -z nocopyreloc was given, we won't generate them either. */
4879 if (info->nocopyreloc)
4882 /* If we don't find any dynamic relocs in read-only sections, then
4883 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4884 We can't do this if there are any small data relocations. This
4885 doesn't work on VxWorks, where we can not have dynamic
4886 relocations (other than copy and jump slot relocations) in an
4888 if (ELIMINATE_COPY_RELOCS
4889 && !ppc_elf_hash_entry (h)->has_sda_refs
4890 && !htab->is_vxworks
4892 && !alias_readonly_dynrelocs (h))
4895 /* We must allocate the symbol in our .dynbss section, which will
4896 become part of the .bss section of the executable. There will be
4897 an entry for this symbol in the .dynsym section. The dynamic
4898 object will contain position independent code, so all references
4899 from the dynamic object to this symbol will go through the global
4900 offset table. The dynamic linker will use the .dynsym entry to
4901 determine the address it must put in the global offset table, so
4902 both the dynamic object and the regular object will refer to the
4903 same memory location for the variable.
4905 Of course, if the symbol is referenced using SDAREL relocs, we
4906 must instead allocate it in .sbss. */
4907 if (ppc_elf_hash_entry (h)->has_sda_refs)
4909 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
4910 s = htab->elf.sdynrelro;
4912 s = htab->elf.sdynbss;
4913 BFD_ASSERT (s != NULL);
4915 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
4919 /* We must generate a R_PPC_COPY reloc to tell the dynamic
4920 linker to copy the initial value out of the dynamic object
4921 and into the runtime process image. */
4922 if (ppc_elf_hash_entry (h)->has_sda_refs)
4923 srel = htab->relsbss;
4924 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
4925 srel = htab->elf.sreldynrelro;
4927 srel = htab->elf.srelbss;
4928 BFD_ASSERT (srel != NULL);
4929 srel->size += sizeof (Elf32_External_Rela);
4933 /* We no longer want dyn_relocs. */
4934 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
4935 return _bfd_elf_adjust_dynamic_copy (info, h, s);
4938 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4939 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4940 specifying the addend on the plt relocation. For -fpic code, the sym
4941 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4942 xxxxxxxx.got2.plt_pic32.<callee>. */
4945 add_stub_sym (struct plt_entry *ent,
4946 struct elf_link_hash_entry *h,
4947 struct bfd_link_info *info)
4949 struct elf_link_hash_entry *sh;
4950 size_t len1, len2, len3;
4953 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4955 if (bfd_link_pic (info))
4956 stub = ".plt_pic32.";
4958 stub = ".plt_call32.";
4960 len1 = strlen (h->root.root.string);
4961 len2 = strlen (stub);
4964 len3 = strlen (ent->sec->name);
4965 name = bfd_malloc (len1 + len2 + len3 + 9);
4968 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4970 memcpy (name + 8, ent->sec->name, len3);
4971 memcpy (name + 8 + len3, stub, len2);
4972 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4973 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4976 if (sh->root.type == bfd_link_hash_new)
4978 sh->root.type = bfd_link_hash_defined;
4979 sh->root.u.def.section = htab->glink;
4980 sh->root.u.def.value = ent->glink_offset;
4981 sh->ref_regular = 1;
4982 sh->def_regular = 1;
4983 sh->ref_regular_nonweak = 1;
4984 sh->forced_local = 1;
4986 sh->root.linker_def = 1;
4991 /* Allocate NEED contiguous space in .got, and return the offset.
4992 Handles allocation of the got header when crossing 32k. */
4995 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4998 unsigned int max_before_header;
5000 if (htab->plt_type == PLT_VXWORKS)
5002 where = htab->elf.sgot->size;
5003 htab->elf.sgot->size += need;
5007 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5008 if (need <= htab->got_gap)
5010 where = max_before_header - htab->got_gap;
5011 htab->got_gap -= need;
5015 if (htab->elf.sgot->size + need > max_before_header
5016 && htab->elf.sgot->size <= max_before_header)
5018 htab->got_gap = max_before_header - htab->elf.sgot->size;
5019 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5021 where = htab->elf.sgot->size;
5022 htab->elf.sgot->size += need;
5028 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5029 TLS_LD is excluded because those go in a special GOT slot. */
5031 static inline unsigned int
5032 got_entries_needed (int tls_mask)
5035 if ((tls_mask & TLS_TLS) == 0)
5040 if ((tls_mask & TLS_GD) != 0)
5042 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5044 if ((tls_mask & TLS_DTPREL) != 0)
5050 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5051 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5054 static inline unsigned int
5055 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5057 /* All the entries we allocated need relocs.
5058 Except IE in executable with a local symbol. We could also omit
5059 the DTPREL reloc on the second word of a GD entry under the same
5060 condition as that for IE, but ld.so needs to differentiate
5061 LD and GD entries. */
5062 if (known && (tls_mask & TLS_TLS) != 0
5063 && (tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5065 return need * sizeof (Elf32_External_Rela) / 4;
5068 /* If H is undefined, make it dynamic if that makes sense. */
5071 ensure_undef_dynamic (struct bfd_link_info *info,
5072 struct elf_link_hash_entry *h)
5074 struct elf_link_hash_table *htab = elf_hash_table (info);
5076 if (htab->dynamic_sections_created
5077 && ((info->dynamic_undefined_weak != 0
5078 && h->root.type == bfd_link_hash_undefweak)
5079 || h->root.type == bfd_link_hash_undefined)
5082 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5083 return bfd_elf_link_record_dynamic_symbol (info, h);
5087 /* Allocate space in associated reloc sections for dynamic relocs. */
5090 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5092 struct bfd_link_info *info = inf;
5093 struct ppc_elf_link_hash_entry *eh;
5094 struct ppc_elf_link_hash_table *htab;
5095 struct elf_dyn_relocs *p;
5098 if (h->root.type == bfd_link_hash_indirect)
5101 htab = ppc_elf_hash_table (info);
5102 eh = (struct ppc_elf_link_hash_entry *) h;
5103 if (eh->elf.got.refcount > 0
5104 || (ELIMINATE_COPY_RELOCS
5105 && !eh->elf.def_regular
5106 && eh->elf.protected_def
5107 && eh->has_addr16_ha
5108 && eh->has_addr16_lo
5109 && htab->params->pic_fixup > 0))
5113 /* Make sure this symbol is output as a dynamic symbol. */
5114 if (!ensure_undef_dynamic (info, &eh->elf))
5118 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
5120 if (!eh->elf.def_dynamic)
5121 /* We'll just use htab->tlsld_got.offset. This should
5122 always be the case. It's a little odd if we have
5123 a local dynamic reloc against a non-local symbol. */
5124 htab->tlsld_got.refcount += 1;
5128 need += got_entries_needed (eh->tls_mask);
5130 eh->elf.got.offset = (bfd_vma) -1;
5133 eh->elf.got.offset = allocate_got (htab, need);
5134 if ((bfd_link_pic (info)
5135 || (htab->elf.dynamic_sections_created
5136 && eh->elf.dynindx != -1
5137 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5138 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5141 bfd_boolean tprel_known = (bfd_link_executable (info)
5142 && SYMBOL_REFERENCES_LOCAL (info,
5145 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5146 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)
5147 && eh->elf.def_dynamic)
5148 need -= sizeof (Elf32_External_Rela);
5149 rsec = htab->elf.srelgot;
5150 if (eh->elf.type == STT_GNU_IFUNC)
5151 rsec = htab->elf.irelplt;
5157 eh->elf.got.offset = (bfd_vma) -1;
5159 /* If no dynamic sections we can't have dynamic relocs, except for
5160 IFUNCs which are handled even in static executables. */
5161 if (!htab->elf.dynamic_sections_created
5162 && h->type != STT_GNU_IFUNC)
5163 eh->dyn_relocs = NULL;
5165 /* Discard relocs on undefined symbols that must be local. */
5166 else if (h->root.type == bfd_link_hash_undefined
5167 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5168 eh->dyn_relocs = NULL;
5170 /* Also discard relocs on undefined weak syms with non-default
5171 visibility, or when dynamic_undefined_weak says so. */
5172 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5173 eh->dyn_relocs = NULL;
5175 if (eh->dyn_relocs == NULL)
5178 /* In the shared -Bsymbolic case, discard space allocated for
5179 dynamic pc-relative relocs against symbols which turn out to be
5180 defined in regular objects. For the normal shared case, discard
5181 space for relocs that have become local due to symbol visibility
5183 else if (bfd_link_pic (info))
5185 /* Relocs that use pc_count are those that appear on a call insn,
5186 or certain REL relocs (see must_be_dyn_reloc) that can be
5187 generated via assembly. We want calls to protected symbols to
5188 resolve directly to the function rather than going via the plt.
5189 If people want function pointer comparisons to work as expected
5190 then they should avoid writing weird assembly. */
5191 if (SYMBOL_CALLS_LOCAL (info, h))
5193 struct elf_dyn_relocs **pp;
5195 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5197 p->count -= p->pc_count;
5206 if (htab->is_vxworks)
5208 struct elf_dyn_relocs **pp;
5210 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5212 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5219 if (eh->dyn_relocs != NULL)
5221 /* Make sure this symbol is output as a dynamic symbol. */
5222 if (!ensure_undef_dynamic (info, h))
5226 else if (ELIMINATE_COPY_RELOCS)
5228 /* For the non-pic case, discard space for relocs against
5229 symbols which turn out to need copy relocs or are not
5231 if (h->dynamic_adjusted
5233 && !ELF_COMMON_DEF_P (h)
5234 && !(h->protected_def
5235 && eh->has_addr16_ha
5236 && eh->has_addr16_lo
5237 && htab->params->pic_fixup > 0))
5239 /* Make sure this symbol is output as a dynamic symbol. */
5240 if (!ensure_undef_dynamic (info, h))
5243 if (h->dynindx == -1)
5244 eh->dyn_relocs = NULL;
5247 eh->dyn_relocs = NULL;
5250 /* Allocate space. */
5251 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5253 asection *sreloc = elf_section_data (p->sec)->sreloc;
5254 if (eh->elf.type == STT_GNU_IFUNC)
5255 sreloc = htab->elf.irelplt;
5256 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5259 /* Handle PLT relocs. Done last, after dynindx has settled.
5260 We might need a PLT entry when the symbol
5263 c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
5264 d) has plt16 relocs and we are linking statically. */
5265 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
5267 || h->type == STT_GNU_IFUNC
5268 || (h->needs_plt && h->dynamic_adjusted)
5271 && !htab->elf.dynamic_sections_created
5272 && !htab->can_convert_all_inline_plt
5273 && (ppc_elf_hash_entry (h)->tls_mask
5274 & (TLS_TLS | PLT_KEEP)) == PLT_KEEP))
5276 struct plt_entry *ent;
5277 bfd_boolean doneone = FALSE;
5278 bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
5280 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5281 if (ent->plt.refcount > 0)
5283 asection *s = htab->elf.splt;
5287 if (h->type == STT_GNU_IFUNC)
5293 if (htab->plt_type == PLT_NEW || !dyn)
5297 plt_offset = s->size;
5300 ent->plt.offset = plt_offset;
5302 if (s == htab->pltlocal)
5303 ent->glink_offset = glink_offset;
5307 if (!doneone || bfd_link_pic (info))
5309 glink_offset = s->size;
5310 s->size += GLINK_ENTRY_SIZE (htab, h);
5313 && !bfd_link_pic (info)
5317 h->root.u.def.section = s;
5318 h->root.u.def.value = glink_offset;
5320 ent->glink_offset = glink_offset;
5322 if (htab->params->emit_stub_syms
5323 && !add_stub_sym (ent, h, info))
5331 /* If this is the first .plt entry, make room
5332 for the special first entry. */
5334 s->size += htab->plt_initial_entry_size;
5336 /* The PowerPC PLT is actually composed of two
5337 parts, the first part is 2 words (for a load
5338 and a jump), and then there is a remaining
5339 word available at the end. */
5340 plt_offset = (htab->plt_initial_entry_size
5341 + (htab->plt_slot_size
5343 - htab->plt_initial_entry_size)
5344 / htab->plt_entry_size)));
5346 /* If this symbol is not defined in a regular
5347 file, and we are not generating a shared
5348 library, then set the symbol to this location
5349 in the .plt. This is to avoid text
5350 relocations, and is required to make
5351 function pointers compare as equal between
5352 the normal executable and the shared library. */
5353 if (! bfd_link_pic (info)
5357 h->root.u.def.section = s;
5358 h->root.u.def.value = plt_offset;
5361 /* Make room for this entry. */
5362 s->size += htab->plt_entry_size;
5363 /* After the 8192nd entry, room for two entries
5365 if (htab->plt_type == PLT_OLD
5366 && (s->size - htab->plt_initial_entry_size)
5367 / htab->plt_entry_size
5368 > PLT_NUM_SINGLE_ENTRIES)
5369 s->size += htab->plt_entry_size;
5371 ent->plt.offset = plt_offset;
5374 /* We also need to make an entry in the .rela.plt section. */
5379 if (h->type == STT_GNU_IFUNC)
5381 s = htab->elf.irelplt;
5382 s->size += sizeof (Elf32_External_Rela);
5384 else if (bfd_link_pic (info))
5386 s = htab->relpltlocal;
5387 s->size += sizeof (Elf32_External_Rela);
5392 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
5394 if (htab->plt_type == PLT_VXWORKS)
5396 /* Allocate space for the unloaded relocations. */
5397 if (!bfd_link_pic (info)
5398 && htab->elf.dynamic_sections_created)
5401 == (bfd_vma) htab->plt_initial_entry_size)
5403 htab->srelplt2->size
5404 += (sizeof (Elf32_External_Rela)
5405 * VXWORKS_PLTRESOLVE_RELOCS);
5408 htab->srelplt2->size
5409 += (sizeof (Elf32_External_Rela)
5410 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5413 /* Every PLT entry has an associated GOT entry in
5415 htab->elf.sgotplt->size += 4;
5422 ent->plt.offset = (bfd_vma) -1;
5426 h->plt.plist = NULL;
5432 h->plt.plist = NULL;
5439 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5440 read-only sections. */
5443 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
5447 if (h->root.type == bfd_link_hash_indirect)
5450 sec = readonly_dynrelocs (h);
5453 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
5455 info->flags |= DF_TEXTREL;
5456 info->callbacks->minfo
5457 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
5458 sec->owner, h->root.root.string, sec);
5460 /* Not an error, just cut short the traversal. */
5466 static const unsigned char glink_eh_frame_cie[] =
5468 0, 0, 0, 16, /* length. */
5469 0, 0, 0, 0, /* id. */
5470 1, /* CIE version. */
5471 'z', 'R', 0, /* Augmentation string. */
5472 4, /* Code alignment. */
5473 0x7c, /* Data alignment. */
5475 1, /* Augmentation size. */
5476 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
5477 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
5480 /* Set the sizes of the dynamic sections. */
5483 ppc_elf_size_dynamic_sections (bfd *output_bfd,
5484 struct bfd_link_info *info)
5486 struct ppc_elf_link_hash_table *htab;
5492 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5495 htab = ppc_elf_hash_table (info);
5496 BFD_ASSERT (htab->elf.dynobj != NULL);
5498 if (elf_hash_table (info)->dynamic_sections_created)
5500 /* Set the contents of the .interp section to the interpreter. */
5501 if (bfd_link_executable (info) && !info->nointerp)
5503 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
5504 BFD_ASSERT (s != NULL);
5505 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5506 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5510 if (htab->plt_type == PLT_OLD)
5511 htab->got_header_size = 16;
5512 else if (htab->plt_type == PLT_NEW)
5513 htab->got_header_size = 12;
5515 /* Set up .got offsets for local syms, and space for local dynamic
5517 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5519 bfd_signed_vma *local_got;
5520 bfd_signed_vma *end_local_got;
5521 struct plt_entry **local_plt;
5522 struct plt_entry **end_local_plt;
5524 bfd_size_type locsymcount;
5525 Elf_Internal_Shdr *symtab_hdr;
5527 if (!is_ppc_elf (ibfd))
5530 for (s = ibfd->sections; s != NULL; s = s->next)
5532 struct ppc_dyn_relocs *p;
5534 for (p = ((struct ppc_dyn_relocs *)
5535 elf_section_data (s)->local_dynrel);
5539 if (!bfd_is_abs_section (p->sec)
5540 && bfd_is_abs_section (p->sec->output_section))
5542 /* Input section has been discarded, either because
5543 it is a copy of a linkonce section or due to
5544 linker script /DISCARD/, so we'll be discarding
5547 else if (htab->is_vxworks
5548 && strcmp (p->sec->output_section->name,
5551 /* Relocations in vxworks .tls_vars sections are
5552 handled specially by the loader. */
5554 else if (p->count != 0)
5556 asection *sreloc = elf_section_data (p->sec)->sreloc;
5558 sreloc = htab->elf.irelplt;
5559 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5560 if ((p->sec->output_section->flags
5561 & (SEC_READONLY | SEC_ALLOC))
5562 == (SEC_READONLY | SEC_ALLOC))
5564 info->flags |= DF_TEXTREL;
5565 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
5566 p->sec->owner, p->sec);
5572 local_got = elf_local_got_refcounts (ibfd);
5576 symtab_hdr = &elf_symtab_hdr (ibfd);
5577 locsymcount = symtab_hdr->sh_info;
5578 end_local_got = local_got + locsymcount;
5579 local_plt = (struct plt_entry **) end_local_got;
5580 end_local_plt = local_plt + locsymcount;
5581 lgot_masks = (char *) end_local_plt;
5583 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5587 if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
5588 htab->tlsld_got.refcount += 1;
5589 need = got_entries_needed (*lgot_masks);
5591 *local_got = (bfd_vma) -1;
5594 *local_got = allocate_got (htab, need);
5595 if (bfd_link_pic (info))
5598 bfd_boolean tprel_known = bfd_link_executable (info);
5600 need = got_relocs_needed (*lgot_masks, need, tprel_known);
5601 srel = htab->elf.srelgot;
5602 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
5603 srel = htab->elf.irelplt;
5609 *local_got = (bfd_vma) -1;
5611 if (htab->is_vxworks)
5614 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5615 lgot_masks = (char *) end_local_plt;
5616 for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks)
5618 struct plt_entry *ent;
5619 bfd_boolean doneone = FALSE;
5620 bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
5622 for (ent = *local_plt; ent != NULL; ent = ent->next)
5623 if (ent->plt.refcount > 0)
5625 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
5627 else if (htab->can_convert_all_inline_plt
5628 || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)
5630 ent->plt.offset = (bfd_vma) -1;
5638 plt_offset = s->size;
5641 ent->plt.offset = plt_offset;
5643 if (s != htab->pltlocal && (!doneone || bfd_link_pic (info)))
5646 glink_offset = s->size;
5647 s->size += GLINK_ENTRY_SIZE (htab, NULL);
5649 ent->glink_offset = glink_offset;
5653 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
5655 s = htab->elf.irelplt;
5656 s->size += sizeof (Elf32_External_Rela);
5658 else if (bfd_link_pic (info))
5660 s = htab->relpltlocal;
5661 s->size += sizeof (Elf32_External_Rela);
5667 ent->plt.offset = (bfd_vma) -1;
5671 /* Allocate space for global sym dynamic relocs. */
5672 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5674 if (htab->tlsld_got.refcount > 0)
5676 htab->tlsld_got.offset = allocate_got (htab, 8);
5677 if (bfd_link_pic (info))
5678 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
5681 htab->tlsld_got.offset = (bfd_vma) -1;
5683 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
5685 unsigned int g_o_t = 32768;
5687 /* If we haven't allocated the header, do so now. When we get here,
5688 for old plt/got the got size will be 0 to 32764 (not allocated),
5689 or 32780 to 65536 (header allocated). For new plt/got, the
5690 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5691 if (htab->elf.sgot->size <= 32768)
5693 g_o_t = htab->elf.sgot->size;
5694 if (htab->plt_type == PLT_OLD)
5696 htab->elf.sgot->size += htab->got_header_size;
5699 htab->elf.hgot->root.u.def.value = g_o_t;
5701 if (bfd_link_pic (info))
5703 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5705 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5706 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5708 if (info->emitrelocations)
5710 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5712 if (sda != NULL && sda->ref_regular)
5713 sda->root.u.def.section->flags |= SEC_KEEP;
5714 sda = htab->sdata[1].sym;
5715 if (sda != NULL && sda->ref_regular)
5716 sda->root.u.def.section->flags |= SEC_KEEP;
5719 if (htab->glink != NULL
5720 && htab->glink->size != 0
5721 && htab->elf.dynamic_sections_created)
5723 htab->glink_pltresolve = htab->glink->size;
5724 /* Space for the branch table. */
5726 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
5727 /* Pad out to align the start of PLTresolve. */
5728 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
5730 htab->glink->size += GLINK_PLTRESOLVE;
5732 if (htab->params->emit_stub_syms)
5734 struct elf_link_hash_entry *sh;
5735 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5736 TRUE, FALSE, FALSE);
5739 if (sh->root.type == bfd_link_hash_new)
5741 sh->root.type = bfd_link_hash_defined;
5742 sh->root.u.def.section = htab->glink;
5743 sh->root.u.def.value = htab->glink_pltresolve;
5744 sh->ref_regular = 1;
5745 sh->def_regular = 1;
5746 sh->ref_regular_nonweak = 1;
5747 sh->forced_local = 1;
5749 sh->root.linker_def = 1;
5751 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5752 TRUE, FALSE, FALSE);
5755 if (sh->root.type == bfd_link_hash_new)
5757 sh->root.type = bfd_link_hash_defined;
5758 sh->root.u.def.section = htab->glink;
5759 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5760 sh->ref_regular = 1;
5761 sh->def_regular = 1;
5762 sh->ref_regular_nonweak = 1;
5763 sh->forced_local = 1;
5765 sh->root.linker_def = 1;
5770 if (htab->glink != NULL
5771 && htab->glink->size != 0
5772 && htab->glink_eh_frame != NULL
5773 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
5774 && _bfd_elf_eh_frame_present (info))
5776 s = htab->glink_eh_frame;
5777 s->size = sizeof (glink_eh_frame_cie) + 20;
5778 if (bfd_link_pic (info))
5781 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
5786 /* We've now determined the sizes of the various dynamic sections.
5787 Allocate memory for them. */
5789 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5791 bfd_boolean strip_section = TRUE;
5793 if ((s->flags & SEC_LINKER_CREATED) == 0)
5796 if (s == htab->elf.splt
5797 || s == htab->elf.sgot)
5799 /* We'd like to strip these sections if they aren't needed, but if
5800 we've exported dynamic symbols from them we must leave them.
5801 It's too late to tell BFD to get rid of the symbols. */
5802 if (htab->elf.hplt != NULL)
5803 strip_section = FALSE;
5804 /* Strip this section if we don't need it; see the
5807 else if (s == htab->elf.iplt
5808 || s == htab->pltlocal
5810 || s == htab->glink_eh_frame
5811 || s == htab->elf.sgotplt
5813 || s == htab->elf.sdynbss
5814 || s == htab->elf.sdynrelro
5815 || s == htab->dynsbss)
5817 /* Strip these too. */
5819 else if (s == htab->sdata[0].section
5820 || s == htab->sdata[1].section)
5822 strip_section = (s->flags & SEC_KEEP) == 0;
5824 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
5829 /* Remember whether there are any relocation sections. */
5832 /* We use the reloc_count field as a counter if we need
5833 to copy relocs into the output file. */
5839 /* It's not one of our sections, so don't allocate space. */
5843 if (s->size == 0 && strip_section)
5845 /* If we don't need this section, strip it from the
5846 output file. This is mostly to handle .rela.bss and
5847 .rela.plt. We must create both sections in
5848 create_dynamic_sections, because they must be created
5849 before the linker maps input sections to output
5850 sections. The linker does that before
5851 adjust_dynamic_symbol is called, and it is that
5852 function which decides whether anything needs to go
5853 into these sections. */
5854 s->flags |= SEC_EXCLUDE;
5858 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5861 /* Allocate memory for the section contents. */
5862 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5863 if (s->contents == NULL)
5867 if (htab->elf.dynamic_sections_created)
5869 /* Add some entries to the .dynamic section. We fill in the
5870 values later, in ppc_elf_finish_dynamic_sections, but we
5871 must add the entries now so that we get the correct size for
5872 the .dynamic section. The DT_DEBUG entry is filled in by the
5873 dynamic linker and used by the debugger. */
5874 #define add_dynamic_entry(TAG, VAL) \
5875 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5877 if (bfd_link_executable (info))
5879 if (!add_dynamic_entry (DT_DEBUG, 0))
5883 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5885 if (!add_dynamic_entry (DT_PLTGOT, 0)
5886 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5887 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5888 || !add_dynamic_entry (DT_JMPREL, 0))
5892 if (htab->plt_type == PLT_NEW
5893 && htab->glink != NULL
5894 && htab->glink->size != 0)
5896 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5898 if (!htab->params->no_tls_get_addr_opt
5899 && htab->tls_get_addr != NULL
5900 && htab->tls_get_addr->plt.plist != NULL
5901 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
5907 if (!add_dynamic_entry (DT_RELA, 0)
5908 || !add_dynamic_entry (DT_RELASZ, 0)
5909 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5913 /* If any dynamic relocs apply to a read-only section, then we
5914 need a DT_TEXTREL entry. */
5915 if ((info->flags & DF_TEXTREL) == 0)
5916 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5919 if ((info->flags & DF_TEXTREL) != 0)
5921 if (!add_dynamic_entry (DT_TEXTREL, 0))
5924 if (htab->is_vxworks
5925 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5928 #undef add_dynamic_entry
5930 if (htab->glink_eh_frame != NULL
5931 && htab->glink_eh_frame->contents != NULL)
5933 unsigned char *p = htab->glink_eh_frame->contents;
5936 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
5937 /* CIE length (rewrite in case little-endian). */
5938 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
5939 p += sizeof (glink_eh_frame_cie);
5941 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
5942 bfd_put_32 (htab->elf.dynobj, val, p);
5945 val = p - htab->glink_eh_frame->contents;
5946 bfd_put_32 (htab->elf.dynobj, val, p);
5948 /* Offset to .glink. Set later. */
5951 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
5956 if (bfd_link_pic (info)
5957 && htab->elf.dynamic_sections_created)
5959 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
5961 *p++ = DW_CFA_advance_loc + adv;
5964 *p++ = DW_CFA_advance_loc1;
5967 else if (adv < 65536)
5969 *p++ = DW_CFA_advance_loc2;
5970 bfd_put_16 (htab->elf.dynobj, adv, p);
5975 *p++ = DW_CFA_advance_loc4;
5976 bfd_put_32 (htab->elf.dynobj, adv, p);
5979 *p++ = DW_CFA_register;
5982 *p++ = DW_CFA_advance_loc + 4;
5983 *p++ = DW_CFA_restore_extended;
5986 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
5987 == htab->glink_eh_frame->size);
5993 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
5994 if it looks like nothing is using them. */
5997 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
5999 struct elf_link_hash_entry *sda = lsect->sym;
6001 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6005 s = bfd_get_section_by_name (output_bfd, lsect->name);
6006 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6008 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6009 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6011 sda->def_regular = 0;
6012 /* This is somewhat magic. See elf_link_output_extsym. */
6013 sda->ref_dynamic = 1;
6014 sda->forced_local = 0;
6021 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6023 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6027 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6028 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6033 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6036 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6038 if (h->plt.plist != NULL
6040 && (!h->pointer_equality_needed
6041 || !h->ref_regular_nonweak))
6044 return _bfd_elf_hash_symbol (h);
6047 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6049 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6050 used for some functions that are allowed to break the ABI). */
6051 static const int shared_stub_entry[] =
6053 0x7c0802a6, /* mflr 0 */
6054 0x429f0005, /* bcl 20, 31, .Lxxx */
6055 0x7d8802a6, /* mflr 12 */
6056 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6057 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6058 0x7c0803a6, /* mtlr 0 */
6059 0x7d8903a6, /* mtctr 12 */
6060 0x4e800420, /* bctr */
6063 static const int stub_entry[] =
6065 0x3d800000, /* lis 12,xxx@ha */
6066 0x398c0000, /* addi 12,12,xxx@l */
6067 0x7d8903a6, /* mtctr 12 */
6068 0x4e800420, /* bctr */
6071 struct ppc_elf_relax_info
6073 unsigned int workaround_size;
6074 unsigned int picfixup_size;
6077 /* This function implements long branch trampolines, and the ppc476
6078 icache bug workaround. Any section needing trampolines or patch
6079 space for the workaround has its size extended so that we can
6080 add trampolines at the end of the section. */
6083 ppc_elf_relax_section (bfd *abfd,
6085 struct bfd_link_info *link_info,
6088 struct one_branch_fixup
6090 struct one_branch_fixup *next;
6092 /* Final link, can use the symbol offset. For a
6093 relocatable link we use the symbol's index. */
6098 Elf_Internal_Shdr *symtab_hdr;
6099 bfd_byte *contents = NULL;
6100 Elf_Internal_Sym *isymbuf = NULL;
6101 Elf_Internal_Rela *internal_relocs = NULL;
6102 Elf_Internal_Rela *irel, *irelend = NULL;
6103 struct one_branch_fixup *branch_fixups = NULL;
6104 struct ppc_elf_relax_info *relax_info = NULL;
6105 unsigned changes = 0;
6106 bfd_boolean workaround_change;
6107 struct ppc_elf_link_hash_table *htab;
6108 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6110 bfd_boolean maybe_pasted;
6114 /* No need to do anything with non-alloc or non-code sections. */
6115 if ((isec->flags & SEC_ALLOC) == 0
6116 || (isec->flags & SEC_CODE) == 0
6117 || (isec->flags & SEC_LINKER_CREATED) != 0
6121 /* We cannot represent the required PIC relocs in the output, so don't
6122 do anything. The linker doesn't support mixing -shared and -r
6124 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6127 htab = ppc_elf_hash_table (link_info);
6131 isec->size = (isec->size + 3) & -4;
6132 if (isec->rawsize == 0)
6133 isec->rawsize = isec->size;
6134 trampbase = isec->size;
6136 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6137 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6138 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6140 if (htab->params->ppc476_workaround
6141 || htab->params->pic_fixup > 0)
6143 if (elf_section_data (isec)->sec_info == NULL)
6145 elf_section_data (isec)->sec_info
6146 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6147 if (elf_section_data (isec)->sec_info == NULL)
6150 relax_info = elf_section_data (isec)->sec_info;
6151 trampbase -= relax_info->workaround_size;
6154 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6155 || strcmp (isec->output_section->name, ".fini") == 0);
6156 /* Space for a branch around any trampolines. */
6157 trampoff = trampbase;
6158 if (maybe_pasted && trampbase == isec->rawsize)
6161 symtab_hdr = &elf_symtab_hdr (abfd);
6163 if (htab->params->branch_trampolines
6164 || htab->params->pic_fixup > 0)
6166 /* Get a copy of the native relocations. */
6167 if (isec->reloc_count != 0)
6169 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6170 link_info->keep_memory);
6171 if (internal_relocs == NULL)
6175 got2 = bfd_get_section_by_name (abfd, ".got2");
6177 irelend = internal_relocs + isec->reloc_count;
6178 for (irel = internal_relocs; irel < irelend; irel++)
6180 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6183 struct one_branch_fixup *f;
6184 size_t insn_offset = 0;
6185 bfd_vma max_branch_offset = 0, val;
6188 struct elf_link_hash_entry *h;
6189 Elf_Internal_Sym *isym;
6190 struct plt_entry **plist;
6191 unsigned char sym_type;
6196 case R_PPC_LOCAL24PC:
6197 case R_PPC_PLTREL24:
6199 max_branch_offset = 1 << 25;
6203 case R_PPC_REL14_BRTAKEN:
6204 case R_PPC_REL14_BRNTAKEN:
6205 max_branch_offset = 1 << 15;
6208 case R_PPC_ADDR16_HA:
6209 if (htab->params->pic_fixup > 0)
6217 /* Get the value of the symbol referred to by the reloc. */
6218 if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf,
6219 ELF32_R_SYM (irel->r_info), abfd))
6226 else if (isym->st_shndx == SHN_ABS)
6227 tsec = bfd_abs_section_ptr;
6231 toff = isym->st_value;
6232 sym_type = ELF_ST_TYPE (isym->st_info);
6237 toff = h->root.u.def.value;
6238 else if (h->root.type == bfd_link_hash_undefined
6239 || h->root.type == bfd_link_hash_undefweak)
6243 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6244 tsec = bfd_und_section_ptr;
6245 toff = bfd_link_relocatable (link_info) ? indx : 0;
6250 /* If this branch is to __tls_get_addr then we may later
6251 optimise away the call. We won't be needing a long-
6252 branch stub in that case. */
6253 if (bfd_link_executable (link_info)
6254 && h == htab->tls_get_addr
6255 && irel != internal_relocs)
6257 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6258 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6259 unsigned int tls_mask = 0;
6261 /* The previous reloc should be one of R_PPC_TLSGD or
6262 R_PPC_TLSLD, or for older object files, a reloc
6263 on the __tls_get_addr arg setup insn. Get tls
6264 mask bits from the symbol on that reloc. */
6265 if (t_symndx < symtab_hdr->sh_info)
6267 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6269 if (local_got_offsets != NULL)
6271 struct plt_entry **local_plt = (struct plt_entry **)
6272 (local_got_offsets + symtab_hdr->sh_info);
6273 char *lgot_masks = (char *)
6274 (local_plt + symtab_hdr->sh_info);
6275 tls_mask = lgot_masks[t_symndx];
6280 struct elf_link_hash_entry *th
6281 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6283 while (th->root.type == bfd_link_hash_indirect
6284 || th->root.type == bfd_link_hash_warning)
6285 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6288 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6291 /* The mask bits tell us if the call will be
6293 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6294 && (t_rtype == R_PPC_TLSGD
6295 || t_rtype == R_PPC_GOT_TLSGD16
6296 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6298 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6299 && (t_rtype == R_PPC_TLSLD
6300 || t_rtype == R_PPC_GOT_TLSLD16
6301 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6308 if (r_type == R_PPC_ADDR16_HA)
6313 && ppc_elf_hash_entry (h)->has_addr16_ha
6314 && ppc_elf_hash_entry (h)->has_addr16_lo)
6315 picfixup_size += 12;
6319 /* The condition here under which we call find_plt_ent must
6320 match that in relocate_section. If we call find_plt_ent here
6321 but not in relocate_section, or vice versa, then the branch
6322 destination used here may be incorrect. */
6326 /* We know is_branch_reloc (r_type) is true. */
6327 if (h->type == STT_GNU_IFUNC
6328 || r_type == R_PPC_PLTREL24)
6329 plist = &h->plt.plist;
6331 else if (sym_type == STT_GNU_IFUNC
6332 && elf_local_got_offsets (abfd) != NULL)
6334 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6335 struct plt_entry **local_plt = (struct plt_entry **)
6336 (local_got_offsets + symtab_hdr->sh_info);
6337 plist = local_plt + ELF32_R_SYM (irel->r_info);
6342 struct plt_entry *ent;
6344 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
6345 addend = irel->r_addend;
6346 ent = find_plt_ent (plist, got2, addend);
6349 if (htab->plt_type == PLT_NEW
6351 || !htab->elf.dynamic_sections_created
6352 || h->dynindx == -1)
6355 toff = ent->glink_offset;
6359 tsec = htab->elf.splt;
6360 toff = ent->plt.offset;
6365 /* If the branch and target are in the same section, you have
6366 no hope of adding stubs. We'll error out later should the
6371 /* toff is used for the symbol index when the symbol is
6372 undefined and we're doing a relocatable link, so we can't
6373 support addends. It would be possible to do so by
6374 putting the addend in one_branch_fixup but addends on
6375 branches are rare so it hardly seems worth supporting. */
6376 if (bfd_link_relocatable (link_info)
6377 && tsec == bfd_und_section_ptr
6378 && r_type != R_PPC_PLTREL24
6379 && irel->r_addend != 0)
6382 /* There probably isn't any reason to handle symbols in
6383 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6384 attribute for a code section, and we are only looking at
6385 branches. However, implement it correctly here as a
6386 reference for other target relax_section functions. */
6387 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6389 /* At this stage in linking, no SEC_MERGE symbol has been
6390 adjusted, so all references to such symbols need to be
6391 passed through _bfd_merged_section_offset. (Later, in
6392 relocate_section, all SEC_MERGE symbols *except* for
6393 section symbols have been adjusted.)
6395 gas may reduce relocations against symbols in SEC_MERGE
6396 sections to a relocation against the section symbol when
6397 the original addend was zero. When the reloc is against
6398 a section symbol we should include the addend in the
6399 offset passed to _bfd_merged_section_offset, since the
6400 location of interest is the original symbol. On the
6401 other hand, an access to "sym+addend" where "sym" is not
6402 a section symbol should not include the addend; Such an
6403 access is presumed to be an offset from "sym"; The
6404 location of interest is just "sym". */
6405 if (sym_type == STT_SECTION
6406 && r_type != R_PPC_PLTREL24)
6407 toff += irel->r_addend;
6410 = _bfd_merged_section_offset (abfd, &tsec,
6411 elf_section_data (tsec)->sec_info,
6414 if (sym_type != STT_SECTION
6415 && r_type != R_PPC_PLTREL24)
6416 toff += irel->r_addend;
6418 /* PLTREL24 addends are special. */
6419 else if (r_type != R_PPC_PLTREL24)
6420 toff += irel->r_addend;
6422 /* Attempted -shared link of non-pic code loses. */
6423 if ((!bfd_link_relocatable (link_info)
6424 && tsec == bfd_und_section_ptr)
6425 || tsec->output_section == NULL
6426 || (tsec->owner != NULL
6427 && (tsec->owner->flags & BFD_PLUGIN) != 0))
6430 roff = irel->r_offset;
6432 /* Avoid creating a lot of unnecessary fixups when
6433 relocatable if the output section size is such that a
6434 fixup can be created at final link.
6435 The max_branch_offset adjustment allows for some number
6436 of other fixups being needed at final link. */
6437 if (bfd_link_relocatable (link_info)
6438 && (isec->output_section->rawsize - (isec->output_offset + roff)
6439 < max_branch_offset - (max_branch_offset >> 4)))
6442 /* If the branch is in range, no need to do anything. */
6443 if (tsec != bfd_und_section_ptr
6444 && (!bfd_link_relocatable (link_info)
6445 /* A relocatable link may have sections moved during
6446 final link, so do not presume they remain in range. */
6447 || tsec->output_section == isec->output_section))
6449 bfd_vma symaddr, reladdr;
6451 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6452 reladdr = isec->output_section->vma + isec->output_offset + roff;
6453 if (symaddr - reladdr + max_branch_offset
6454 < 2 * max_branch_offset)
6458 /* Look for an existing fixup to this address. */
6459 for (f = branch_fixups; f ; f = f->next)
6460 if (f->tsec == tsec && f->toff == toff)
6466 unsigned long stub_rtype;
6468 val = trampoff - roff;
6469 if (val >= max_branch_offset)
6470 /* Oh dear, we can't reach a trampoline. Don't try to add
6471 one. We'll report an error later. */
6474 if (bfd_link_pic (link_info))
6476 size = 4 * ARRAY_SIZE (shared_stub_entry);
6481 size = 4 * ARRAY_SIZE (stub_entry);
6484 stub_rtype = R_PPC_RELAX;
6485 if (tsec == htab->elf.splt
6486 || tsec == htab->glink)
6488 stub_rtype = R_PPC_RELAX_PLT;
6489 if (r_type == R_PPC_PLTREL24)
6490 stub_rtype = R_PPC_RELAX_PLTREL24;
6493 /* Hijack the old relocation. Since we need two
6494 relocations for this use a "composite" reloc. */
6495 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6497 irel->r_offset = trampoff + insn_offset;
6498 if (r_type == R_PPC_PLTREL24
6499 && stub_rtype != R_PPC_RELAX_PLTREL24)
6502 /* Record the fixup so we don't do it again this section. */
6503 f = bfd_malloc (sizeof (*f));
6504 f->next = branch_fixups;
6507 f->trampoff = trampoff;
6515 val = f->trampoff - roff;
6516 if (val >= max_branch_offset)
6519 /* Nop out the reloc, since we're finalizing things here. */
6520 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6523 /* Get the section contents. */
6524 if (contents == NULL)
6526 /* Get cached copy if it exists. */
6527 if (elf_section_data (isec)->this_hdr.contents != NULL)
6528 contents = elf_section_data (isec)->this_hdr.contents;
6529 /* Go get them off disk. */
6530 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6534 /* Fix up the existing branch to hit the trampoline. */
6535 hit_addr = contents + roff;
6539 case R_PPC_LOCAL24PC:
6540 case R_PPC_PLTREL24:
6541 t0 = bfd_get_32 (abfd, hit_addr);
6543 t0 |= val & 0x3fffffc;
6544 bfd_put_32 (abfd, t0, hit_addr);
6548 case R_PPC_REL14_BRTAKEN:
6549 case R_PPC_REL14_BRNTAKEN:
6550 t0 = bfd_get_32 (abfd, hit_addr);
6553 bfd_put_32 (abfd, t0, hit_addr);
6558 while (branch_fixups != NULL)
6560 struct one_branch_fixup *f = branch_fixups;
6561 branch_fixups = branch_fixups->next;
6566 workaround_change = FALSE;
6568 if (htab->params->ppc476_workaround
6569 && (!bfd_link_relocatable (link_info)
6570 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
6572 bfd_vma addr, end_addr;
6573 unsigned int crossings;
6574 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
6576 addr = isec->output_section->vma + isec->output_offset;
6577 end_addr = addr + trampoff;
6579 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
6582 /* Keep space aligned, to ensure the patch code itself does
6583 not cross a page. Don't decrease size calculated on a
6584 previous pass as otherwise we might never settle on a layout. */
6585 newsize = 15 - ((end_addr - 1) & 15);
6586 newsize += crossings * 16;
6587 if (relax_info->workaround_size < newsize)
6589 relax_info->workaround_size = newsize;
6590 workaround_change = TRUE;
6592 /* Ensure relocate_section is called. */
6593 isec->flags |= SEC_RELOC;
6595 newsize = trampoff + relax_info->workaround_size;
6598 if (htab->params->pic_fixup > 0)
6600 picfixup_size -= relax_info->picfixup_size;
6601 if (picfixup_size != 0)
6602 relax_info->picfixup_size += picfixup_size;
6603 newsize += relax_info->picfixup_size;
6606 if (changes != 0 || picfixup_size != 0 || workaround_change)
6607 isec->size = newsize;
6610 && symtab_hdr->contents != (unsigned char *) isymbuf)
6612 if (! link_info->keep_memory)
6616 /* Cache the symbols for elf_link_input_bfd. */
6617 symtab_hdr->contents = (unsigned char *) isymbuf;
6621 if (contents != NULL
6622 && elf_section_data (isec)->this_hdr.contents != contents)
6624 if (!changes && !link_info->keep_memory)
6628 /* Cache the section contents for elf_link_input_bfd. */
6629 elf_section_data (isec)->this_hdr.contents = contents;
6633 changes += picfixup_size;
6636 /* Append sufficient NOP relocs so we can write out relocation
6637 information for the trampolines. */
6638 Elf_Internal_Shdr *rel_hdr;
6639 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6640 * sizeof (*new_relocs));
6645 memcpy (new_relocs, internal_relocs,
6646 isec->reloc_count * sizeof (*new_relocs));
6647 for (ix = changes; ix--;)
6649 irel = new_relocs + ix + isec->reloc_count;
6651 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6653 if (internal_relocs != elf_section_data (isec)->relocs)
6654 free (internal_relocs);
6655 elf_section_data (isec)->relocs = new_relocs;
6656 isec->reloc_count += changes;
6657 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6658 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6660 else if (internal_relocs != NULL
6661 && elf_section_data (isec)->relocs != internal_relocs)
6662 free (internal_relocs);
6664 *again = changes != 0 || workaround_change;
6668 while (branch_fixups != NULL)
6670 struct one_branch_fixup *f = branch_fixups;
6671 branch_fixups = branch_fixups->next;
6674 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6676 if (contents != NULL
6677 && elf_section_data (isec)->this_hdr.contents != contents)
6679 if (internal_relocs != NULL
6680 && elf_section_data (isec)->relocs != internal_relocs)
6681 free (internal_relocs);
6685 /* What to do when ld finds relocations against symbols defined in
6686 discarded sections. */
6689 ppc_elf_action_discarded (asection *sec)
6691 if (strcmp (".fixup", sec->name) == 0)
6694 if (strcmp (".got2", sec->name) == 0)
6697 return _bfd_elf_default_action_discarded (sec);
6700 /* Fill in the address for a pointer generated in a linker section. */
6703 elf_finish_pointer_linker_section (bfd *input_bfd,
6704 elf_linker_section_t *lsect,
6705 struct elf_link_hash_entry *h,
6707 const Elf_Internal_Rela *rel)
6709 elf_linker_section_pointers_t *linker_section_ptr;
6711 BFD_ASSERT (lsect != NULL);
6715 /* Handle global symbol. */
6716 struct ppc_elf_link_hash_entry *eh;
6718 eh = (struct ppc_elf_link_hash_entry *) h;
6719 BFD_ASSERT (eh->elf.def_regular);
6720 linker_section_ptr = eh->linker_section_pointer;
6724 /* Handle local symbol. */
6725 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6727 BFD_ASSERT (is_ppc_elf (input_bfd));
6728 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6729 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6732 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6735 BFD_ASSERT (linker_section_ptr != NULL);
6737 /* Offset will always be a multiple of four, so use the bottom bit
6738 as a "written" flag. */
6739 if ((linker_section_ptr->offset & 1) == 0)
6741 bfd_put_32 (lsect->section->owner,
6742 relocation + linker_section_ptr->addend,
6743 lsect->section->contents + linker_section_ptr->offset);
6744 linker_section_ptr->offset += 1;
6747 relocation = (lsect->section->output_section->vma
6748 + lsect->section->output_offset
6749 + linker_section_ptr->offset - 1
6750 - SYM_VAL (lsect->sym));
6754 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6755 lsect->name, (long) relocation, (long) relocation);
6761 #define PPC_LO(v) ((v) & 0xffff)
6762 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6763 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6766 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
6767 asection *plt_sec, unsigned char *p,
6768 struct bfd_link_info *info)
6770 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6771 bfd *output_bfd = info->output_bfd;
6773 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
6776 && h == htab->tls_get_addr
6777 && !htab->params->no_tls_get_addr_opt)
6779 bfd_put_32 (output_bfd, LWZ_11_3, p);
6781 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
6783 bfd_put_32 (output_bfd, MR_0_3, p);
6785 bfd_put_32 (output_bfd, CMPWI_11_0, p);
6787 bfd_put_32 (output_bfd, ADD_3_12_2, p);
6789 bfd_put_32 (output_bfd, BEQLR, p);
6791 bfd_put_32 (output_bfd, MR_3_0, p);
6793 bfd_put_32 (output_bfd, NOP, p);
6797 plt = ((ent->plt.offset & ~1)
6798 + plt_sec->output_section->vma
6799 + plt_sec->output_offset);
6801 if (bfd_link_pic (info))
6805 if (ent->addend >= 32768)
6807 + ent->sec->output_section->vma
6808 + ent->sec->output_offset);
6809 else if (htab->elf.hgot != NULL)
6810 got = SYM_VAL (htab->elf.hgot);
6814 if (plt + 0x8000 < 0x10000)
6815 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6818 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6820 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6825 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6827 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6830 bfd_put_32 (output_bfd, MTCTR_11, p);
6832 bfd_put_32 (output_bfd, BCTR, p);
6836 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
6841 /* Return true if symbol is defined statically. */
6844 is_static_defined (struct elf_link_hash_entry *h)
6846 return ((h->root.type == bfd_link_hash_defined
6847 || h->root.type == bfd_link_hash_defweak)
6848 && h->root.u.def.section != NULL
6849 && h->root.u.def.section->output_section != NULL);
6852 /* If INSN is an opcode that may be used with an @tls operand, return
6853 the transformed insn for TLS optimisation, otherwise return 0. If
6854 REG is non-zero only match an insn with RB or RA equal to REG. */
6857 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6861 if ((insn & (0x3f << 26)) != 31 << 26)
6864 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6865 rtra = insn & ((1 << 26) - (1 << 16));
6866 else if (((insn >> 16) & 0x1f) == reg)
6867 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6871 if ((insn & (0x3ff << 1)) == 266 << 1)
6874 else if ((insn & (0x1f << 1)) == 23 << 1
6875 && ((insn & (0x1f << 6)) < 14 << 6
6876 || ((insn & (0x1f << 6)) >= 16 << 6
6877 && (insn & (0x1f << 6)) < 24 << 6)))
6878 /* load and store indexed -> dform. */
6879 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6880 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6881 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6882 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6883 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6885 insn = (58 << 26) | 2;
6892 /* If INSN is an opcode that may be used with an @tprel operand, return
6893 the transformed insn for an undefined weak symbol, ie. with the
6894 thread pointer REG operand removed. Otherwise return 0. */
6897 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6899 if ((insn & (0x1f << 16)) == reg << 16
6900 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6901 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6902 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6903 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6904 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6905 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6906 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6907 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6908 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6909 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6910 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6911 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6912 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6913 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6914 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6915 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6917 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6918 && ((insn & 3) == 0 || (insn & 3) == 3))))
6920 insn &= ~(0x1f << 16);
6922 else if ((insn & (0x1f << 21)) == reg << 21
6923 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6924 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6925 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6927 insn &= ~(0x1f << 21);
6928 insn |= (insn & (0x1f << 16)) << 5;
6929 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6930 insn -= 2 >> 26; /* convert to ori,oris */
6938 is_insn_ds_form (unsigned int insn)
6940 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
6941 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
6942 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
6943 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
6947 is_insn_dq_form (unsigned int insn)
6949 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
6950 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
6951 && (insn & 3) == 1));
6954 /* The RELOCATE_SECTION function is called by the ELF backend linker
6955 to handle the relocations for a section.
6957 The relocs are always passed as Rela structures; if the section
6958 actually uses Rel structures, the r_addend field will always be
6961 This function is responsible for adjust the section contents as
6962 necessary, and (if using Rela relocs and generating a
6963 relocatable output file) adjusting the reloc addend as
6966 This function does not have to worry about setting the reloc
6967 address or the reloc symbol index.
6969 LOCAL_SYMS is a pointer to the swapped in local symbols.
6971 LOCAL_SECTIONS is an array giving the section in the input file
6972 corresponding to the st_shndx field of each local symbol.
6974 The global hash table entry for the global symbols can be found
6975 via elf_sym_hashes (input_bfd).
6977 When generating relocatable output, this function must handle
6978 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6979 going to be the section symbol corresponding to the output
6980 section, which means that the addend must be adjusted
6984 ppc_elf_relocate_section (bfd *output_bfd,
6985 struct bfd_link_info *info,
6987 asection *input_section,
6989 Elf_Internal_Rela *relocs,
6990 Elf_Internal_Sym *local_syms,
6991 asection **local_sections)
6993 Elf_Internal_Shdr *symtab_hdr;
6994 struct elf_link_hash_entry **sym_hashes;
6995 struct ppc_elf_link_hash_table *htab;
6996 Elf_Internal_Rela *rel;
6997 Elf_Internal_Rela *wrel;
6998 Elf_Internal_Rela *relend;
6999 Elf_Internal_Rela outrel;
7001 bfd_vma *local_got_offsets;
7002 bfd_boolean ret = TRUE;
7003 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7004 bfd_boolean is_vxworks_tls;
7005 unsigned int picfixup_size = 0;
7006 struct ppc_elf_relax_info *relax_info = NULL;
7009 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7010 "%ld relocations%s",
7011 input_bfd, input_section,
7012 (long) input_section->reloc_count,
7013 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7016 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7018 /* Initialize howto table if not already done. */
7019 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7020 ppc_elf_howto_init ();
7022 htab = ppc_elf_hash_table (info);
7023 local_got_offsets = elf_local_got_offsets (input_bfd);
7024 symtab_hdr = &elf_symtab_hdr (input_bfd);
7025 sym_hashes = elf_sym_hashes (input_bfd);
7026 /* We have to handle relocations in vxworks .tls_vars sections
7027 specially, because the dynamic loader is 'weird'. */
7028 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7029 && !strcmp (input_section->output_section->name,
7031 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7032 relax_info = elf_section_data (input_section)->sec_info;
7033 rel = wrel = relocs;
7034 relend = relocs + input_section->reloc_count;
7035 for (; rel < relend; wrel++, rel++)
7037 enum elf_ppc_reloc_type r_type;
7039 bfd_reloc_status_type r;
7040 Elf_Internal_Sym *sym;
7042 struct elf_link_hash_entry *h;
7043 const char *sym_name;
7044 reloc_howto_type *howto;
7045 unsigned long r_symndx;
7047 bfd_vma branch_bit, from;
7048 bfd_boolean unresolved_reloc, save_unresolved_reloc;
7050 unsigned int tls_type, tls_mask, tls_gd;
7051 struct plt_entry **ifunc, **plt_list;
7052 struct reloc_howto_struct alt_howto;
7055 r_type = ELF32_R_TYPE (rel->r_info);
7059 unresolved_reloc = FALSE;
7061 r_symndx = ELF32_R_SYM (rel->r_info);
7063 if (r_symndx < symtab_hdr->sh_info)
7065 sym = local_syms + r_symndx;
7066 sec = local_sections[r_symndx];
7067 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7069 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7073 bfd_boolean ignored;
7075 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7076 r_symndx, symtab_hdr, sym_hashes,
7078 unresolved_reloc, warned, ignored);
7080 sym_name = h->root.root.string;
7083 if (sec != NULL && discarded_section (sec))
7085 /* For relocs against symbols from removed linkonce sections,
7086 or sections discarded by a linker script, we just want the
7087 section contents zeroed. Avoid any special processing. */
7089 if (r_type < R_PPC_max)
7090 howto = ppc_elf_howto_table[r_type];
7092 _bfd_clear_contents (howto, input_bfd, input_section,
7093 contents + rel->r_offset);
7094 wrel->r_offset = rel->r_offset;
7098 /* For ld -r, remove relocations in debug sections against
7099 symbols defined in discarded sections. Not done for
7100 non-debug to preserve relocs in .eh_frame which the
7101 eh_frame editing code expects to be present. */
7102 if (bfd_link_relocatable (info)
7103 && (input_section->flags & SEC_DEBUGGING))
7109 if (bfd_link_relocatable (info))
7112 && r_type == R_PPC_PLTREL24
7113 && rel->r_addend != 0)
7115 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7116 addend specifies the GOT pointer offset within .got2. */
7117 rel->r_addend += got2->output_offset;
7119 if (r_type != R_PPC_RELAX_PLT
7120 && r_type != R_PPC_RELAX_PLTREL24
7121 && r_type != R_PPC_RELAX)
7125 /* TLS optimizations. Replace instruction sequences and relocs
7126 based on information we collected in tls_optimize. We edit
7127 RELOCS so that --emit-relocs will output something sensible
7128 for the final instruction stream. */
7132 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7133 else if (local_got_offsets != NULL)
7135 struct plt_entry **local_plt;
7138 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7139 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7140 tls_mask = lgot_masks[r_symndx];
7143 /* Ensure reloc mapping code below stays sane. */
7144 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7145 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7146 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7147 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7148 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7149 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7150 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7151 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7158 case R_PPC_GOT_TPREL16:
7159 case R_PPC_GOT_TPREL16_LO:
7160 if ((tls_mask & TLS_TLS) != 0
7161 && (tls_mask & TLS_TPREL) == 0)
7165 insn = bfd_get_32 (input_bfd,
7166 contents + rel->r_offset - d_offset);
7168 insn |= 0x3c020000; /* addis 0,2,0 */
7169 bfd_put_32 (input_bfd, insn,
7170 contents + rel->r_offset - d_offset);
7171 r_type = R_PPC_TPREL16_HA;
7172 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7177 if ((tls_mask & TLS_TLS) != 0
7178 && (tls_mask & TLS_TPREL) == 0)
7182 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7183 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7186 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7187 r_type = R_PPC_TPREL16_LO;
7188 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7190 /* Was PPC_TLS which sits on insn boundary, now
7191 PPC_TPREL16_LO which is at low-order half-word. */
7192 rel->r_offset += d_offset;
7196 case R_PPC_GOT_TLSGD16_HI:
7197 case R_PPC_GOT_TLSGD16_HA:
7198 tls_gd = TLS_TPRELGD;
7199 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7203 case R_PPC_GOT_TLSLD16_HI:
7204 case R_PPC_GOT_TLSLD16_HA:
7205 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7208 if ((tls_mask & tls_gd) != 0)
7209 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7210 + R_PPC_GOT_TPREL16);
7213 rel->r_offset -= d_offset;
7214 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7215 r_type = R_PPC_NONE;
7217 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7221 case R_PPC_GOT_TLSGD16:
7222 case R_PPC_GOT_TLSGD16_LO:
7223 tls_gd = TLS_TPRELGD;
7224 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7228 case R_PPC_GOT_TLSLD16:
7229 case R_PPC_GOT_TLSLD16_LO:
7230 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7232 unsigned int insn1, insn2;
7236 offset = (bfd_vma) -1;
7237 /* If not using the newer R_PPC_TLSGD/LD to mark
7238 __tls_get_addr calls, we must trust that the call
7239 stays with its arg setup insns, ie. that the next
7240 reloc is the __tls_get_addr call associated with
7241 the current reloc. Edit both insns. */
7242 if (input_section->has_tls_get_addr_call
7244 && branch_reloc_hash_match (input_bfd, rel + 1,
7245 htab->tls_get_addr))
7246 offset = rel[1].r_offset;
7247 /* We read the low GOT_TLS insn because we need to keep
7248 the destination reg. It may be something other than
7249 the usual r3, and moved to r3 before the call by
7250 intervening code. */
7251 insn1 = bfd_get_32 (input_bfd,
7252 contents + rel->r_offset - d_offset);
7253 if ((tls_mask & tls_gd) != 0)
7256 insn1 &= (0x1f << 21) | (0x1f << 16);
7257 insn1 |= 32 << 26; /* lwz */
7258 if (offset != (bfd_vma) -1)
7260 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7261 insn2 = 0x7c631214; /* add 3,3,2 */
7262 bfd_put_32 (input_bfd, insn2, contents + offset);
7264 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7265 + R_PPC_GOT_TPREL16);
7266 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7271 insn1 &= 0x1f << 21;
7272 insn1 |= 0x3c020000; /* addis r,2,0 */
7275 /* Was an LD reloc. */
7277 r_symndx < symtab_hdr->sh_info;
7279 if (local_sections[r_symndx] == sec)
7281 if (r_symndx >= symtab_hdr->sh_info)
7282 r_symndx = STN_UNDEF;
7283 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7284 if (r_symndx != STN_UNDEF)
7285 rel->r_addend -= (local_syms[r_symndx].st_value
7286 + sec->output_offset
7287 + sec->output_section->vma);
7289 r_type = R_PPC_TPREL16_HA;
7290 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7291 if (offset != (bfd_vma) -1)
7293 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7294 rel[1].r_offset = offset + d_offset;
7295 rel[1].r_addend = rel->r_addend;
7296 insn2 = 0x38630000; /* addi 3,3,0 */
7297 bfd_put_32 (input_bfd, insn2, contents + offset);
7300 bfd_put_32 (input_bfd, insn1,
7301 contents + rel->r_offset - d_offset);
7304 /* We changed the symbol on an LD reloc. Start over
7305 in order to get h, sym, sec etc. right. */
7312 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7313 && rel + 1 < relend)
7316 bfd_vma offset = rel->r_offset;
7318 if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
7320 bfd_put_32 (input_bfd, NOP, contents + offset);
7321 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7325 if ((tls_mask & TLS_TPRELGD) != 0)
7328 r_type = R_PPC_NONE;
7329 insn2 = 0x7c631214; /* add 3,3,2 */
7334 r_type = R_PPC_TPREL16_LO;
7335 rel->r_offset += d_offset;
7336 insn2 = 0x38630000; /* addi 3,3,0 */
7338 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7339 bfd_put_32 (input_bfd, insn2, contents + offset);
7340 /* Zap the reloc on the _tls_get_addr call too. */
7341 BFD_ASSERT (offset == rel[1].r_offset);
7342 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7347 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7348 && rel + 1 < relend)
7352 if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
7354 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7355 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7360 r_symndx < symtab_hdr->sh_info;
7362 if (local_sections[r_symndx] == sec)
7364 if (r_symndx >= symtab_hdr->sh_info)
7365 r_symndx = STN_UNDEF;
7366 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7367 if (r_symndx != STN_UNDEF)
7368 rel->r_addend -= (local_syms[r_symndx].st_value
7369 + sec->output_offset
7370 + sec->output_section->vma);
7372 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7373 rel->r_offset += d_offset;
7374 insn2 = 0x38630000; /* addi 3,3,0 */
7375 bfd_put_32 (input_bfd, insn2,
7376 contents + rel->r_offset - d_offset);
7377 /* Zap the reloc on the _tls_get_addr call too. */
7378 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7379 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7385 /* Handle other relocations that tweak non-addend part of insn. */
7392 /* Branch taken prediction relocations. */
7393 case R_PPC_ADDR14_BRTAKEN:
7394 case R_PPC_REL14_BRTAKEN:
7395 branch_bit = BRANCH_PREDICT_BIT;
7398 /* Branch not taken prediction relocations. */
7399 case R_PPC_ADDR14_BRNTAKEN:
7400 case R_PPC_REL14_BRNTAKEN:
7404 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7405 insn &= ~BRANCH_PREDICT_BIT;
7408 from = (rel->r_offset
7409 + input_section->output_offset
7410 + input_section->output_section->vma);
7412 /* Invert 'y' bit if not the default. */
7413 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7414 insn ^= BRANCH_PREDICT_BIT;
7416 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7420 case R_PPC_PLT16_HA:
7424 insn = bfd_get_32 (input_bfd,
7425 contents + rel->r_offset - d_offset);
7426 if ((insn & (0x3f << 26)) == 15u << 26
7427 && (insn & (0x1f << 16)) != 0)
7429 if (!bfd_link_pic (info))
7431 /* Convert addis to lis. */
7432 insn &= ~(0x1f << 16);
7433 bfd_put_32 (input_bfd, insn,
7434 contents + rel->r_offset - d_offset);
7437 else if (bfd_link_pic (info))
7438 info->callbacks->einfo
7439 (_("%P: %H: error: %s with unexpected instruction %x\n"),
7440 input_bfd, input_section, rel->r_offset,
7441 "R_PPC_PLT16_HA", insn);
7446 if (ELIMINATE_COPY_RELOCS
7450 && ppc_elf_hash_entry (h)->has_addr16_ha
7451 && ppc_elf_hash_entry (h)->has_addr16_lo
7452 && htab->params->pic_fixup > 0)
7454 /* Convert lis;addi or lis;load/store accessing a protected
7455 variable defined in a shared library to PIC. */
7458 if (r_type == R_PPC_ADDR16_HA)
7460 insn = bfd_get_32 (input_bfd,
7461 contents + rel->r_offset - d_offset);
7462 if ((insn & (0x3f << 26)) == (15u << 26)
7463 && (insn & (0x1f << 16)) == 0 /* lis */)
7469 p = (contents + input_section->size
7470 - relax_info->workaround_size
7471 - relax_info->picfixup_size
7473 off = (p - contents) - (rel->r_offset - d_offset);
7474 if (off > 0x1fffffc || (off & 3) != 0)
7475 info->callbacks->einfo
7476 (_("%H: fixup branch overflow\n"),
7477 input_bfd, input_section, rel->r_offset);
7479 bfd_put_32 (input_bfd, B | off,
7480 contents + rel->r_offset - d_offset);
7481 got_addr = (htab->elf.sgot->output_section->vma
7482 + htab->elf.sgot->output_offset
7483 + (h->got.offset & ~1));
7484 wrel->r_offset = (p - contents) + d_offset;
7485 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
7486 wrel->r_addend = got_addr;
7488 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
7489 bfd_put_32 (input_bfd, insn, p);
7491 /* Convert lis to lwz, loading address from GOT. */
7493 insn ^= (32u ^ 15u) << 26;
7494 insn |= (insn & (0x1f << 21)) >> 5;
7495 insn |= got_addr & 0xffff;
7496 bfd_put_32 (input_bfd, insn, p + 4);
7498 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
7499 picfixup_size += 12;
7501 /* Use one of the spare relocs, so --emit-relocs
7502 output is reasonable. */
7503 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7505 rel->r_offset = wrel[-1].r_offset + 4;
7506 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
7507 rel->r_addend = wrel[-1].r_addend;
7509 /* Continue on as if we had a got reloc, to output
7511 r_type = R_PPC_GOT16_LO;
7515 /* xgettext:c-format */
7516 (_("%pB(%pA+%#" PRIx64 "): error: "
7517 "%s with unexpected instruction %#x"),
7518 input_bfd, input_section, (uint64_t) rel->r_offset,
7519 "R_PPC_ADDR16_HA", insn);
7521 else if (r_type == R_PPC_ADDR16_LO)
7523 insn = bfd_get_32 (input_bfd,
7524 contents + rel->r_offset - d_offset);
7525 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7526 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7527 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7528 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7529 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7530 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7531 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7532 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7533 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7534 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7535 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7536 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7537 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7538 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7539 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7541 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7542 && ((insn & 3) == 0 || (insn & 3) == 3)))
7544 /* Arrange to apply the reloc addend, if any. */
7546 unresolved_reloc = FALSE;
7547 rel->r_info = ELF32_R_INFO (0, r_type);
7551 /* xgettext:c-format */
7552 (_("%pB(%pA+%#" PRIx64 "): error: "
7553 "%s with unexpected instruction %#x"),
7554 input_bfd, input_section, (uint64_t) rel->r_offset,
7555 "R_PPC_ADDR16_LO", insn);
7560 if (!htab->is_vxworks)
7562 struct plt_entry *ent;
7566 if (h->type == STT_GNU_IFUNC)
7567 ifunc = &h->plt.plist;
7569 else if (local_got_offsets != NULL
7570 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7572 struct plt_entry **local_plt;
7574 local_plt = (struct plt_entry **) (local_got_offsets
7575 + symtab_hdr->sh_info);
7576 ifunc = local_plt + r_symndx;
7581 && (!bfd_link_pic (info)
7582 || is_branch_reloc (r_type)
7583 || r_type == R_PPC_PLT16_LO
7584 || r_type == R_PPC_PLT16_HI
7585 || r_type == R_PPC_PLT16_HA))
7588 if (bfd_link_pic (info)
7589 && (r_type == R_PPC_PLTREL24
7590 || r_type == R_PPC_PLT16_LO
7591 || r_type == R_PPC_PLT16_HI
7592 || r_type == R_PPC_PLT16_HA))
7593 addend = rel->r_addend;
7594 ent = find_plt_ent (ifunc, got2, addend);
7598 if (bfd_link_pic (info)
7600 && htab->plt_type != PLT_NEW
7601 && (!htab->elf.dynamic_sections_created
7603 || h->dynindx == -1))
7605 /* Uh oh, we are going to create a pic glink stub
7606 for an ifunc (here for h == NULL and later in
7607 finish_dynamic_symbol for h != NULL), and
7608 apparently are using code compiled with
7609 -mbss-plt. The difficulty is that -mbss-plt code
7610 gives no indication via a magic PLTREL24 addend
7611 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
7612 is pointing into a .got2 section (and how far
7614 info->callbacks->einfo
7615 /* xgettext:c-format */
7616 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
7617 input_bfd, input_section, rel->r_offset, sym_name);
7620 unresolved_reloc = FALSE;
7621 if (htab->plt_type == PLT_NEW
7622 || !htab->elf.dynamic_sections_created
7624 || h->dynindx == -1)
7625 relocation = (htab->glink->output_section->vma
7626 + htab->glink->output_offset
7627 + (ent->glink_offset & ~1));
7629 relocation = (htab->elf.splt->output_section->vma
7630 + htab->elf.splt->output_offset
7635 addend = rel->r_addend;
7636 save_unresolved_reloc = unresolved_reloc;
7638 if (r_type < R_PPC_max)
7639 howto = ppc_elf_howto_table[r_type];
7646 case R_PPC_TPREL16_HA:
7647 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
7649 bfd_byte *p = contents + (rel->r_offset & ~3);
7650 unsigned int insn = bfd_get_32 (input_bfd, p);
7651 if ((insn & ((0x3f << 26) | 0x1f << 16))
7652 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
7653 /* xgettext:c-format */
7654 info->callbacks->minfo
7655 (_("%H: warning: %s unexpected insn %#x.\n"),
7656 input_bfd, input_section, rel->r_offset, howto->name, insn);
7658 bfd_put_32 (input_bfd, NOP, p);
7662 case R_PPC_TPREL16_LO:
7663 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
7665 bfd_byte *p = contents + (rel->r_offset & ~3);
7666 unsigned int insn = bfd_get_32 (input_bfd, p);
7667 insn &= ~(0x1f << 16);
7669 bfd_put_32 (input_bfd, insn, p);
7678 /* xgettext:c-format */
7679 _bfd_error_handler (_("%pB: %s unsupported"),
7680 input_bfd, howto->name);
7682 bfd_set_error (bfd_error_bad_value);
7690 case R_PPC_EMB_MRKREF:
7691 case R_PPC_GNU_VTINHERIT:
7692 case R_PPC_GNU_VTENTRY:
7695 /* GOT16 relocations. Like an ADDR16 using the symbol's
7696 address in the GOT as relocation value instead of the
7697 symbol's value itself. Also, create a GOT entry for the
7698 symbol and put the symbol value there. */
7699 case R_PPC_GOT_TLSGD16:
7700 case R_PPC_GOT_TLSGD16_LO:
7701 case R_PPC_GOT_TLSGD16_HI:
7702 case R_PPC_GOT_TLSGD16_HA:
7703 tls_type = TLS_TLS | TLS_GD;
7706 case R_PPC_GOT_TLSLD16:
7707 case R_PPC_GOT_TLSLD16_LO:
7708 case R_PPC_GOT_TLSLD16_HI:
7709 case R_PPC_GOT_TLSLD16_HA:
7710 tls_type = TLS_TLS | TLS_LD;
7713 case R_PPC_GOT_TPREL16:
7714 case R_PPC_GOT_TPREL16_LO:
7715 case R_PPC_GOT_TPREL16_HI:
7716 case R_PPC_GOT_TPREL16_HA:
7717 tls_type = TLS_TLS | TLS_TPREL;
7720 case R_PPC_GOT_DTPREL16:
7721 case R_PPC_GOT_DTPREL16_LO:
7722 case R_PPC_GOT_DTPREL16_HI:
7723 case R_PPC_GOT_DTPREL16_HA:
7724 tls_type = TLS_TLS | TLS_DTPREL;
7728 case R_PPC_GOT16_LO:
7729 case R_PPC_GOT16_HI:
7730 case R_PPC_GOT16_HA:
7734 /* Relocation is to the entry for this symbol in the global
7740 if (htab->elf.sgot == NULL)
7744 if (tls_type == (TLS_TLS | TLS_LD)
7746 || !h->def_dynamic))
7747 offp = &htab->tlsld_got.offset;
7750 if (!htab->elf.dynamic_sections_created
7752 || SYMBOL_REFERENCES_LOCAL (info, h)
7753 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
7754 /* This is actually a static link, or it is a
7755 -Bsymbolic link and the symbol is defined
7756 locally, or the symbol was forced to be local
7757 because of a version file. */
7762 unresolved_reloc = FALSE;
7764 offp = &h->got.offset;
7768 if (local_got_offsets == NULL)
7770 offp = &local_got_offsets[r_symndx];
7773 /* The offset must always be a multiple of 4. We use the
7774 least significant bit to record whether we have already
7775 processed this entry. */
7781 unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
7782 ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
7783 | TLS_TPREL | TLS_TPRELGD)
7786 if (offp == &htab->tlsld_got.offset)
7792 /* We might have multiple got entries for this sym.
7793 Initialize them all. */
7798 if ((tls_m & TLS_LD) != 0)
7800 tls_ty = TLS_TLS | TLS_LD;
7803 else if ((tls_m & TLS_GD) != 0)
7805 tls_ty = TLS_TLS | TLS_GD;
7808 else if ((tls_m & TLS_DTPREL) != 0)
7810 tls_ty = TLS_TLS | TLS_DTPREL;
7811 tls_m &= ~TLS_DTPREL;
7813 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7815 tls_ty = TLS_TLS | TLS_TPREL;
7819 /* Generate relocs for the dynamic linker. */
7821 || (bfd_link_pic (info)
7823 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
7824 || offp == &htab->tlsld_got.offset)
7825 && !(tls_ty == (TLS_TLS | TLS_TPREL)
7826 && bfd_link_executable (info)
7827 && SYMBOL_REFERENCES_LOCAL (info, h))))
7829 asection *rsec = htab->elf.srelgot;
7834 rsec = htab->elf.irelplt;
7836 htab->local_ifunc_resolver = 1;
7837 else if (is_static_defined (h))
7838 htab->maybe_local_ifunc_resolver = 1;
7840 outrel.r_offset = (htab->elf.sgot->output_section->vma
7841 + htab->elf.sgot->output_offset
7843 outrel.r_addend = 0;
7844 if (tls_ty & (TLS_LD | TLS_GD))
7846 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7847 if (tls_ty == (TLS_TLS | TLS_GD))
7849 loc = rsec->contents;
7850 loc += (rsec->reloc_count++
7851 * sizeof (Elf32_External_Rela));
7852 bfd_elf32_swap_reloca_out (output_bfd,
7854 outrel.r_offset += 4;
7856 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7859 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7860 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7861 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7862 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7864 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7865 else if (ifunc != NULL)
7866 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7868 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7869 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7871 outrel.r_addend += relocation;
7872 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7874 if (htab->elf.tls_sec == NULL)
7875 outrel.r_addend = 0;
7877 outrel.r_addend -= htab->elf.tls_sec->vma;
7880 loc = rsec->contents;
7881 loc += (rsec->reloc_count++
7882 * sizeof (Elf32_External_Rela));
7883 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7886 /* Init the .got section contents if we're not
7887 emitting a reloc. */
7890 bfd_vma value = relocation;
7894 if (htab->elf.tls_sec == NULL)
7898 if (tls_ty & TLS_LD)
7901 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7902 if (tls_ty & TLS_TPREL)
7903 value += DTP_OFFSET - TP_OFFSET;
7906 if (tls_ty & (TLS_LD | TLS_GD))
7908 bfd_put_32 (input_bfd, value,
7909 htab->elf.sgot->contents + off + 4);
7913 bfd_put_32 (input_bfd, value,
7914 htab->elf.sgot->contents + off);
7918 if (tls_ty & (TLS_LD | TLS_GD))
7927 if (off >= (bfd_vma) -2)
7930 if ((tls_type & TLS_TLS) != 0)
7932 if (tls_type != (TLS_TLS | TLS_LD))
7934 if ((tls_mask & TLS_LD) != 0
7936 || !h->def_dynamic))
7938 if (tls_type != (TLS_TLS | TLS_GD))
7940 if ((tls_mask & TLS_GD) != 0)
7942 if (tls_type != (TLS_TLS | TLS_DTPREL))
7944 if ((tls_mask & TLS_DTPREL) != 0)
7951 /* If here for a picfixup, we're done. */
7952 if (r_type != ELF32_R_TYPE (rel->r_info))
7955 relocation = (htab->elf.sgot->output_section->vma
7956 + htab->elf.sgot->output_offset
7958 - SYM_VAL (htab->elf.hgot));
7960 /* Addends on got relocations don't make much sense.
7961 x+off@got is actually x@got+off, and since the got is
7962 generated by a hash table traversal, the value in the
7963 got at entry m+n bears little relation to the entry m. */
7965 info->callbacks->einfo
7966 /* xgettext:c-format */
7967 (_("%H: non-zero addend on %s reloc against `%s'\n"),
7968 input_bfd, input_section, rel->r_offset,
7974 /* Relocations that need no special processing. */
7975 case R_PPC_LOCAL24PC:
7976 /* It makes no sense to point a local relocation
7977 at a symbol not in this object. */
7978 if (unresolved_reloc)
7980 (*info->callbacks->undefined_symbol) (info,
7981 h->root.root.string,
7988 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
7990 /* @local on an ifunc does not really make sense since
7991 the ifunc resolver can take you anywhere. More
7992 seriously, calls to ifuncs must go through a plt call
7993 stub, and for pic the plt call stubs uses r30 to
7994 access the PLT. The problem is that a call that is
7995 local won't have the +32k reloc addend trick marking
7996 -fPIC code, so the linker won't know whether r30 is
7997 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
7998 /* xgettext:c-format */
7999 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8000 input_bfd, input_section, rel->r_offset,
8001 h->root.root.string);
8005 case R_PPC_DTPREL16:
8006 case R_PPC_DTPREL16_LO:
8007 case R_PPC_DTPREL16_HI:
8008 case R_PPC_DTPREL16_HA:
8009 if (htab->elf.tls_sec != NULL)
8010 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8013 /* Relocations that may need to be propagated if this is a shared
8016 case R_PPC_TPREL16_LO:
8017 case R_PPC_TPREL16_HI:
8018 case R_PPC_TPREL16_HA:
8020 && h->root.type == bfd_link_hash_undefweak
8021 && h->dynindx == -1)
8023 /* Make this relocation against an undefined weak symbol
8024 resolve to zero. This is really just a tweak, since
8025 code using weak externs ought to check that they are
8026 defined before using them. */
8027 bfd_byte *p = contents + rel->r_offset - d_offset;
8028 unsigned int insn = bfd_get_32 (input_bfd, p);
8029 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8031 bfd_put_32 (input_bfd, insn, p);
8034 if (htab->elf.tls_sec != NULL)
8035 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8036 /* The TPREL16 relocs shouldn't really be used in shared
8037 libs or with non-local symbols as that will result in
8038 DT_TEXTREL being set, but support them anyway. */
8042 if (htab->elf.tls_sec != NULL)
8043 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8046 case R_PPC_DTPREL32:
8047 if (htab->elf.tls_sec != NULL)
8048 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8051 case R_PPC_DTPMOD32:
8057 case R_PPC_REL16_LO:
8058 case R_PPC_REL16_HI:
8059 case R_PPC_REL16_HA:
8060 case R_PPC_REL16DX_HA:
8064 if (h == NULL || h == htab->elf.hgot)
8070 case R_PPC_ADDR16_LO:
8071 case R_PPC_ADDR16_HI:
8072 case R_PPC_ADDR16_HA:
8077 case R_PPC_VLE_REL8:
8078 case R_PPC_VLE_REL15:
8079 case R_PPC_VLE_REL24:
8082 case R_PPC_REL14_BRTAKEN:
8083 case R_PPC_REL14_BRNTAKEN:
8084 /* If these relocations are not to a named symbol, they can be
8085 handled right here, no need to bother the dynamic linker. */
8086 if (SYMBOL_CALLS_LOCAL (info, h)
8087 || h == htab->elf.hgot)
8093 case R_PPC_ADDR14_BRTAKEN:
8094 case R_PPC_ADDR14_BRNTAKEN:
8095 if (h != NULL && !bfd_link_pic (info))
8100 if ((input_section->flags & SEC_ALLOC) == 0
8104 if (bfd_link_pic (info)
8106 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8107 && ((h != NULL && pc_dynrelocs (h))
8108 || must_be_dyn_reloc (info, r_type)))
8110 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8118 fprintf (stderr, "ppc_elf_relocate_section needs to "
8119 "create relocation for %s\n",
8120 (h && h->root.root.string
8121 ? h->root.root.string : "<unknown>"));
8124 /* When generating a shared object, these relocations
8125 are copied into the output file to be resolved at run
8128 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8131 if (outrel.r_offset == (bfd_vma) -1
8132 || outrel.r_offset == (bfd_vma) -2)
8133 skip = (int) outrel.r_offset;
8134 outrel.r_offset += (input_section->output_section->vma
8135 + input_section->output_offset);
8138 memset (&outrel, 0, sizeof outrel);
8139 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8142 BFD_ASSERT (indx != -1);
8143 unresolved_reloc = FALSE;
8144 outrel.r_info = ELF32_R_INFO (indx, r_type);
8145 outrel.r_addend = rel->r_addend;
8149 outrel.r_addend = relocation + rel->r_addend;
8151 if (r_type != R_PPC_ADDR32)
8155 /* If we get here when building a static
8156 executable, then the libc startup function
8157 responsible for applying indirect function
8158 relocations is going to complain about
8160 If we get here when building a dynamic
8161 executable, it will be because we have
8162 a text relocation. The dynamic loader
8163 will set the text segment writable and
8164 non-executable to apply text relocations.
8165 So we'll segfault when trying to run the
8166 indirection function to resolve the reloc. */
8167 info->callbacks->einfo
8168 /* xgettext:c-format */
8169 (_("%H: relocation %s for indirect "
8170 "function %s unsupported\n"),
8171 input_bfd, input_section, rel->r_offset,
8176 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8178 else if (sec == NULL || sec->owner == NULL)
8180 bfd_set_error (bfd_error_bad_value);
8187 /* We are turning this relocation into one
8188 against a section symbol. It would be
8189 proper to subtract the symbol's value,
8190 osec->vma, from the emitted reloc addend,
8191 but ld.so expects buggy relocs.
8192 FIXME: Why not always use a zero index? */
8193 osec = sec->output_section;
8194 indx = elf_section_data (osec)->dynindx;
8197 osec = htab->elf.text_index_section;
8198 indx = elf_section_data (osec)->dynindx;
8200 BFD_ASSERT (indx != 0);
8203 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8204 indx, osec->name, osec->flags,
8205 h->root.root.string);
8209 outrel.r_info = ELF32_R_INFO (indx, r_type);
8211 else if (ifunc != NULL)
8212 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8214 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8217 sreloc = elf_section_data (input_section)->sreloc;
8220 sreloc = htab->elf.irelplt;
8222 htab->local_ifunc_resolver = 1;
8223 else if (is_static_defined (h))
8224 htab->maybe_local_ifunc_resolver = 1;
8229 loc = sreloc->contents;
8230 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8231 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8236 /* This reloc will be computed at runtime. Clear the memory
8237 so that it contains a predictable value for prelink. */
8240 relocation = howto->pc_relative ? outrel.r_offset : 0;
8247 case R_PPC_RELAX_PLT:
8248 case R_PPC_RELAX_PLTREL24:
8251 struct plt_entry *ent;
8252 bfd_vma got2_addend = 0;
8254 if (r_type == R_PPC_RELAX_PLTREL24)
8256 if (bfd_link_pic (info))
8257 got2_addend = addend;
8260 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8261 if (htab->plt_type == PLT_NEW)
8262 relocation = (htab->glink->output_section->vma
8263 + htab->glink->output_offset
8264 + ent->glink_offset);
8266 relocation = (htab->elf.splt->output_section->vma
8267 + htab->elf.splt->output_offset
8276 size_t insn_offset = rel->r_offset;
8279 if (bfd_link_pic (info))
8281 relocation -= (input_section->output_section->vma
8282 + input_section->output_offset
8283 + rel->r_offset - 4);
8284 stub = shared_stub_entry;
8285 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8286 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8287 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8289 size = ARRAY_SIZE (shared_stub_entry) - 3;
8294 size = ARRAY_SIZE (stub_entry);
8297 relocation += addend;
8298 if (bfd_link_relocatable (info))
8301 /* First insn is HA, second is LO. */
8303 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8304 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8308 insn |= relocation & 0xffff;
8309 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8317 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8321 /* Rewrite the reloc and convert one of the trailing nop
8322 relocs to describe this relocation. */
8323 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8324 /* The relocs are at the bottom 2 bytes */
8325 wrel->r_offset = rel->r_offset + d_offset;
8326 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8327 wrel->r_addend = rel->r_addend;
8328 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8330 wrel->r_offset += 4;
8331 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8335 /* Indirect .sdata relocation. */
8336 case R_PPC_EMB_SDAI16:
8337 BFD_ASSERT (htab->sdata[0].section != NULL);
8338 if (!is_static_defined (htab->sdata[0].sym))
8340 unresolved_reloc = TRUE;
8344 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8345 h, relocation, rel);
8349 /* Indirect .sdata2 relocation. */
8350 case R_PPC_EMB_SDA2I16:
8351 BFD_ASSERT (htab->sdata[1].section != NULL);
8352 if (!is_static_defined (htab->sdata[1].sym))
8354 unresolved_reloc = TRUE;
8358 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8359 h, relocation, rel);
8363 /* Handle the TOC16 reloc. We want to use the offset within the .got
8364 section, not the actual VMA. This is appropriate when generating
8365 an embedded ELF object, for which the .got section acts like the
8366 AIX .toc section. */
8367 case R_PPC_TOC16: /* phony GOT16 relocations */
8368 if (sec == NULL || sec->output_section == NULL)
8370 unresolved_reloc = TRUE;
8373 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8375 || strcmp (bfd_get_section_name (sec->owner, sec),
8378 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8381 case R_PPC_PLTREL24:
8382 if (h != NULL && ifunc == NULL)
8384 struct plt_entry *ent;
8386 ent = find_plt_ent (&h->plt.plist, got2,
8387 bfd_link_pic (info) ? addend : 0);
8389 || htab->elf.splt == NULL)
8391 /* We didn't make a PLT entry for this symbol. This
8392 happens when statically linking PIC code, or when
8393 using -Bsymbolic. */
8397 /* Relocation is to the entry for this symbol in the
8398 procedure linkage table. */
8399 unresolved_reloc = FALSE;
8400 if (htab->plt_type == PLT_NEW)
8401 relocation = (htab->glink->output_section->vma
8402 + htab->glink->output_offset
8403 + ent->glink_offset);
8405 relocation = (htab->elf.splt->output_section->vma
8406 + htab->elf.splt->output_offset
8411 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8412 addend specifies the GOT pointer offset within .got2.
8413 Don't apply it to the relocation field. */
8419 case R_PPC_PLT16_LO:
8420 case R_PPC_PLT16_HI:
8421 case R_PPC_PLT16_HA:
8424 plt_list = &h->plt.plist;
8425 else if (ifunc != NULL)
8427 else if (local_got_offsets != NULL)
8429 struct plt_entry **local_plt;
8430 local_plt = (struct plt_entry **) (local_got_offsets
8431 + symtab_hdr->sh_info);
8432 plt_list = local_plt + r_symndx;
8434 unresolved_reloc = TRUE;
8435 if (plt_list != NULL)
8437 struct plt_entry *ent;
8439 ent = find_plt_ent (plt_list, got2,
8440 bfd_link_pic (info) ? addend : 0);
8441 if (ent != NULL && ent->plt.offset != (bfd_vma) -1)
8445 unresolved_reloc = FALSE;
8446 plt = htab->elf.splt;
8447 if (!htab->elf.dynamic_sections_created
8449 || h->dynindx == -1)
8452 plt = htab->elf.iplt;
8454 plt = htab->pltlocal;
8456 relocation = (plt->output_section->vma
8457 + plt->output_offset
8459 if (bfd_link_pic (info))
8463 if (ent->addend >= 32768)
8465 + ent->sec->output_section->vma
8466 + ent->sec->output_offset);
8468 got = SYM_VAL (htab->elf.hgot);
8476 /* Relocate against _SDA_BASE_. */
8477 case R_PPC_SDAREL16:
8480 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8483 || sec->output_section == NULL
8484 || !is_static_defined (sda))
8486 unresolved_reloc = TRUE;
8489 addend -= SYM_VAL (sda);
8491 name = bfd_get_section_name (output_bfd, sec->output_section);
8492 if (!(strcmp (name, ".sdata") == 0
8493 || strcmp (name, ".sbss") == 0))
8496 /* xgettext:c-format */
8497 (_("%pB: the target (%s) of a %s relocation is "
8498 "in the wrong output section (%s)"),
8507 /* Relocate against _SDA2_BASE_. */
8508 case R_PPC_EMB_SDA2REL:
8511 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8514 || sec->output_section == NULL
8515 || !is_static_defined (sda))
8517 unresolved_reloc = TRUE;
8520 addend -= SYM_VAL (sda);
8522 name = bfd_get_section_name (output_bfd, sec->output_section);
8523 if (!(strcmp (name, ".sdata2") == 0
8524 || strcmp (name, ".sbss2") == 0))
8527 /* xgettext:c-format */
8528 (_("%pB: the target (%s) of a %s relocation is "
8529 "in the wrong output section (%s)"),
8538 case R_PPC_VLE_LO16A:
8539 relocation = relocation + addend;
8540 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8541 contents + rel->r_offset, relocation,
8542 split16a_type, htab->params->vle_reloc_fixup);
8545 case R_PPC_VLE_LO16D:
8546 relocation = relocation + addend;
8547 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8548 contents + rel->r_offset, relocation,
8549 split16d_type, htab->params->vle_reloc_fixup);
8552 case R_PPC_VLE_HI16A:
8553 relocation = (relocation + addend) >> 16;
8554 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8555 contents + rel->r_offset, relocation,
8556 split16a_type, htab->params->vle_reloc_fixup);
8559 case R_PPC_VLE_HI16D:
8560 relocation = (relocation + addend) >> 16;
8561 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8562 contents + rel->r_offset, relocation,
8563 split16d_type, htab->params->vle_reloc_fixup);
8566 case R_PPC_VLE_HA16A:
8567 relocation = (relocation + addend + 0x8000) >> 16;
8568 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8569 contents + rel->r_offset, relocation,
8570 split16a_type, htab->params->vle_reloc_fixup);
8573 case R_PPC_VLE_HA16D:
8574 relocation = (relocation + addend + 0x8000) >> 16;
8575 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8576 contents + rel->r_offset, relocation,
8577 split16d_type, htab->params->vle_reloc_fixup);
8580 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8581 case R_PPC_EMB_SDA21:
8582 case R_PPC_VLE_SDA21:
8583 case R_PPC_EMB_RELSDA:
8584 case R_PPC_VLE_SDA21_LO:
8589 struct elf_link_hash_entry *sda = NULL;
8591 if (sec == NULL || sec->output_section == NULL)
8593 unresolved_reloc = TRUE;
8597 name = bfd_get_section_name (output_bfd, sec->output_section);
8598 if (strcmp (name, ".sdata") == 0
8599 || strcmp (name, ".sbss") == 0)
8602 sda = htab->sdata[0].sym;
8604 else if (strcmp (name, ".sdata2") == 0
8605 || strcmp (name, ".sbss2") == 0)
8608 sda = htab->sdata[1].sym;
8610 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8611 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8618 /* xgettext:c-format */
8619 (_("%pB: the target (%s) of a %s relocation is "
8620 "in the wrong output section (%s)"),
8626 bfd_set_error (bfd_error_bad_value);
8633 if (!is_static_defined (sda))
8635 unresolved_reloc = TRUE;
8638 addend -= SYM_VAL (sda);
8641 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8643 && (r_type == R_PPC_VLE_SDA21
8644 || r_type == R_PPC_VLE_SDA21_LO))
8646 relocation = relocation + addend;
8649 /* Force e_li insn, keeping RT from original insn. */
8653 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8654 /* Top 4 bits of value to 17..20. */
8655 insn |= (relocation & 0xf0000) >> 5;
8656 /* Next 5 bits of the value to 11..15. */
8657 insn |= (relocation & 0xf800) << 5;
8658 /* And the final 11 bits of the value to bits 21 to 31. */
8659 insn |= relocation & 0x7ff;
8661 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8663 if (r_type == R_PPC_VLE_SDA21
8664 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8668 else if (r_type == R_PPC_EMB_SDA21
8669 || r_type == R_PPC_VLE_SDA21
8670 || r_type == R_PPC_VLE_SDA21_LO)
8672 /* Fill in register field. */
8673 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8675 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8679 case R_PPC_VLE_SDAREL_LO16A:
8680 case R_PPC_VLE_SDAREL_LO16D:
8681 case R_PPC_VLE_SDAREL_HI16A:
8682 case R_PPC_VLE_SDAREL_HI16D:
8683 case R_PPC_VLE_SDAREL_HA16A:
8684 case R_PPC_VLE_SDAREL_HA16D:
8688 struct elf_link_hash_entry *sda = NULL;
8690 if (sec == NULL || sec->output_section == NULL)
8692 unresolved_reloc = TRUE;
8696 name = bfd_get_section_name (output_bfd, sec->output_section);
8697 if (strcmp (name, ".sdata") == 0
8698 || strcmp (name, ".sbss") == 0)
8699 sda = htab->sdata[0].sym;
8700 else if (strcmp (name, ".sdata2") == 0
8701 || strcmp (name, ".sbss2") == 0)
8702 sda = htab->sdata[1].sym;
8706 /* xgettext:c-format */
8707 (_("%pB: the target (%s) of a %s relocation is "
8708 "in the wrong output section (%s)"),
8714 bfd_set_error (bfd_error_bad_value);
8719 if (sda == NULL || !is_static_defined (sda))
8721 unresolved_reloc = TRUE;
8724 value = relocation + addend - SYM_VAL (sda);
8726 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8727 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8728 contents + rel->r_offset, value,
8730 htab->params->vle_reloc_fixup);
8731 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8732 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8733 contents + rel->r_offset, value,
8735 htab->params->vle_reloc_fixup);
8736 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8738 value = value >> 16;
8739 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8740 contents + rel->r_offset, value,
8742 htab->params->vle_reloc_fixup);
8744 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8746 value = value >> 16;
8747 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8748 contents + rel->r_offset, value,
8750 htab->params->vle_reloc_fixup);
8752 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8754 value = (value + 0x8000) >> 16;
8755 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8756 contents + rel->r_offset, value,
8758 htab->params->vle_reloc_fixup);
8760 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8762 value = (value + 0x8000) >> 16;
8763 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
8764 contents + rel->r_offset, value,
8766 htab->params->vle_reloc_fixup);
8771 case R_PPC_VLE_ADDR20:
8772 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
8775 /* Relocate against the beginning of the section. */
8777 case R_PPC_SECTOFF_LO:
8778 case R_PPC_SECTOFF_HI:
8779 case R_PPC_SECTOFF_HA:
8780 if (sec == NULL || sec->output_section == NULL)
8782 unresolved_reloc = TRUE;
8785 addend -= sec->output_section->vma;
8788 /* Negative relocations. */
8789 case R_PPC_EMB_NADDR32:
8790 case R_PPC_EMB_NADDR16:
8791 case R_PPC_EMB_NADDR16_LO:
8792 case R_PPC_EMB_NADDR16_HI:
8793 case R_PPC_EMB_NADDR16_HA:
8794 addend -= 2 * relocation;
8798 case R_PPC_GLOB_DAT:
8799 case R_PPC_JMP_SLOT:
8800 case R_PPC_RELATIVE:
8801 case R_PPC_IRELATIVE:
8803 case R_PPC_PLTREL32:
8805 case R_PPC_EMB_RELSEC16:
8806 case R_PPC_EMB_RELST_LO:
8807 case R_PPC_EMB_RELST_HI:
8808 case R_PPC_EMB_RELST_HA:
8809 case R_PPC_EMB_BIT_FLD:
8810 /* xgettext:c-format */
8811 _bfd_error_handler (_("%pB: %s unsupported"),
8812 input_bfd, howto->name);
8814 bfd_set_error (bfd_error_invalid_operation);
8825 if (unresolved_reloc)
8827 bfd_byte *p = contents + rel->r_offset;
8828 unsigned int insn = bfd_get_32 (input_bfd, p);
8830 bfd_put_32 (input_bfd, B | insn, p);
8831 unresolved_reloc = save_unresolved_reloc;
8832 r_type = R_PPC_REL24;
8833 howto = ppc_elf_howto_table[r_type];
8835 else if (htab->plt_type != PLT_NEW)
8836 info->callbacks->einfo
8837 (_("%P: %H: %s relocation unsupported for bss-plt\n"),
8838 input_bfd, input_section, rel->r_offset,
8843 case R_PPC_PLT16_HA:
8844 case R_PPC_PLT16_LO:
8845 if (unresolved_reloc)
8847 bfd_byte *p = contents + (rel->r_offset & ~3);
8848 bfd_put_32 (input_bfd, NOP, p);
8849 unresolved_reloc = FALSE;
8850 r_type = R_PPC_NONE;
8851 howto = ppc_elf_howto_table[r_type];
8853 else if (htab->plt_type != PLT_NEW)
8854 info->callbacks->einfo
8855 (_("%P: %H: %s relocation unsupported for bss-plt\n"),
8856 input_bfd, input_section, rel->r_offset,
8861 /* Do any further special processing. */
8867 case R_PPC_ADDR16_HA:
8868 case R_PPC_REL16_HA:
8869 case R_PPC_REL16DX_HA:
8870 case R_PPC_SECTOFF_HA:
8871 case R_PPC_TPREL16_HA:
8872 case R_PPC_DTPREL16_HA:
8873 case R_PPC_EMB_NADDR16_HA:
8874 case R_PPC_EMB_RELST_HA:
8875 /* It's just possible that this symbol is a weak symbol
8876 that's not actually defined anywhere. In that case,
8877 'sec' would be NULL, and we should leave the symbol
8878 alone (it will be set to zero elsewhere in the link). */
8883 case R_PPC_PLT16_HA:
8884 case R_PPC_GOT16_HA:
8885 case R_PPC_GOT_TLSGD16_HA:
8886 case R_PPC_GOT_TLSLD16_HA:
8887 case R_PPC_GOT_TPREL16_HA:
8888 case R_PPC_GOT_DTPREL16_HA:
8889 /* Add 0x10000 if sign bit in 0:15 is set.
8890 Bits 0:15 are not used. */
8895 case R_PPC_ADDR16_LO:
8897 case R_PPC_GOT16_LO:
8898 case R_PPC_SDAREL16:
8900 case R_PPC_SECTOFF_LO:
8901 case R_PPC_DTPREL16:
8902 case R_PPC_DTPREL16_LO:
8904 case R_PPC_TPREL16_LO:
8905 case R_PPC_GOT_TLSGD16:
8906 case R_PPC_GOT_TLSGD16_LO:
8907 case R_PPC_GOT_TLSLD16:
8908 case R_PPC_GOT_TLSLD16_LO:
8909 case R_PPC_GOT_DTPREL16:
8910 case R_PPC_GOT_DTPREL16_LO:
8911 case R_PPC_GOT_TPREL16:
8912 case R_PPC_GOT_TPREL16_LO:
8914 /* The 32-bit ABI lacks proper relocations to deal with
8915 certain 64-bit instructions. Prevent damage to bits
8916 that make up part of the insn opcode. */
8917 unsigned int insn, mask, lobit;
8919 insn = bfd_get_32 (input_bfd,
8920 contents + rel->r_offset - d_offset);
8922 if (is_insn_ds_form (insn))
8924 else if (is_insn_dq_form (insn))
8928 relocation += addend;
8929 addend = insn & mask;
8930 lobit = mask & relocation;
8933 relocation ^= lobit;
8934 info->callbacks->einfo
8935 /* xgettext:c-format */
8936 (_("%H: error: %s against `%s' not a multiple of %u\n"),
8937 input_bfd, input_section, rel->r_offset,
8938 howto->name, sym_name, mask + 1);
8939 bfd_set_error (bfd_error_bad_value);
8947 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8948 "offset = %ld, addend = %ld\n",
8953 (long) rel->r_offset,
8957 if (unresolved_reloc
8958 && !((input_section->flags & SEC_DEBUGGING) != 0
8960 && _bfd_elf_section_offset (output_bfd, info, input_section,
8961 rel->r_offset) != (bfd_vma) -1)
8963 info->callbacks->einfo
8964 /* xgettext:c-format */
8965 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
8966 input_bfd, input_section, rel->r_offset,
8972 /* 16-bit fields in insns mostly have signed values, but a
8973 few insns have 16-bit unsigned values. Really, we should
8974 have different reloc types. */
8975 if (howto->complain_on_overflow != complain_overflow_dont
8976 && howto->dst_mask == 0xffff
8977 && (input_section->flags & SEC_CODE) != 0)
8979 enum complain_overflow complain = complain_overflow_signed;
8981 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
8985 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
8986 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
8987 complain = complain_overflow_bitfield;
8988 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
8989 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
8990 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
8991 complain = complain_overflow_unsigned;
8993 if (howto->complain_on_overflow != complain)
8996 alt_howto.complain_on_overflow = complain;
9001 if (r_type == R_PPC_REL16DX_HA)
9003 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9004 if (rel->r_offset + 4 > input_section->size)
9005 r = bfd_reloc_outofrange;
9010 relocation += addend;
9011 relocation -= (rel->r_offset
9012 + input_section->output_offset
9013 + input_section->output_section->vma);
9015 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9017 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9018 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9023 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9024 rel->r_offset, relocation, addend);
9026 if (r != bfd_reloc_ok)
9028 if (r == bfd_reloc_overflow)
9031 /* On code like "if (foo) foo();" don't report overflow
9032 on a branch to zero when foo is undefined. */
9035 && (h->root.type == bfd_link_hash_undefweak
9036 || h->root.type == bfd_link_hash_undefined)
9037 && is_branch_reloc (r_type)))
9038 info->callbacks->reloc_overflow
9039 (info, (h ? &h->root : NULL), sym_name, howto->name,
9040 rel->r_addend, input_bfd, input_section, rel->r_offset);
9044 info->callbacks->einfo
9045 /* xgettext:c-format */
9046 (_("%H: %s reloc against `%s': error %d\n"),
9047 input_bfd, input_section, rel->r_offset,
9048 howto->name, sym_name, (int) r);
9059 Elf_Internal_Shdr *rel_hdr;
9060 size_t deleted = rel - wrel;
9062 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9063 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9064 if (rel_hdr->sh_size == 0)
9066 /* It is too late to remove an empty reloc section. Leave
9068 ??? What is wrong with an empty section??? */
9069 rel_hdr->sh_size = rel_hdr->sh_entsize;
9074 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9075 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9076 input_section->reloc_count -= deleted;
9080 fprintf (stderr, "\n");
9083 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9084 && input_section->size != input_section->rawsize
9085 && (strcmp (input_section->output_section->name, ".init") == 0
9086 || strcmp (input_section->output_section->name, ".fini") == 0))
9088 /* Branch around the trampolines. */
9089 unsigned int insn = B + input_section->size - input_section->rawsize;
9090 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9093 if (htab->params->ppc476_workaround
9094 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9095 && (!bfd_link_relocatable (info)
9096 || (input_section->output_section->alignment_power
9097 >= htab->params->pagesize_p2)))
9099 bfd_vma start_addr, end_addr, addr;
9100 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9102 if (relax_info->workaround_size != 0)
9108 bfd_put_32 (input_bfd, BA, fill);
9109 p = contents + input_section->size - relax_info->workaround_size;
9110 n = relax_info->workaround_size >> 2;
9113 memcpy (p, fill, 4);
9118 /* The idea is: Replace the last instruction on a page with a
9119 branch to a patch area. Put the insn there followed by a
9120 branch back to the next page. Complicated a little by
9121 needing to handle moved conditional branches, and by not
9122 wanting to touch data-in-text. */
9124 start_addr = (input_section->output_section->vma
9125 + input_section->output_offset);
9126 end_addr = (start_addr + input_section->size
9127 - relax_info->workaround_size);
9128 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9132 bfd_vma offset = addr - start_addr;
9133 Elf_Internal_Rela *lo, *hi;
9134 bfd_boolean is_data;
9135 bfd_vma patch_off, patch_addr;
9138 /* Do we have a data reloc at this offset? If so, leave
9146 rel = lo + (hi - lo) / 2;
9147 if (rel->r_offset < offset)
9149 else if (rel->r_offset > offset + 3)
9153 switch (ELF32_R_TYPE (rel->r_info))
9170 /* Some instructions can be left alone too. Unconditional
9171 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9172 avoid the icache failure.
9174 The problem occurs due to prefetch across a page boundary
9175 where stale instructions can be fetched from the next
9176 page, and the mechanism for flushing these bad
9177 instructions fails under certain circumstances. The
9178 unconditional branches:
9179 1) Branch: b, bl, ba, bla,
9180 2) Branch Conditional: bc, bca, bcl, bcla,
9181 3) Branch Conditional to Link Register: bclr, bclrl,
9182 where (2) and (3) have BO=0x14 making them unconditional,
9183 prevent the bad prefetch because the prefetch itself is
9184 affected by these instructions. This happens even if the
9185 instruction is not executed.
9190 . addi 9,9,new_page@l
9197 The bctr is not predicted taken due to ctr not being
9198 ready, so prefetch continues on past the bctr into the
9199 new page which might have stale instructions. If they
9200 fail to be flushed, then they will be executed after the
9201 bctr executes. Either of the following modifications
9202 prevent the bad prefetch from happening in the first
9205 . lis 9,new_page@ha lis 9,new_page@ha
9206 . addi 9,9,new_page@l addi 9,9,new_page@l
9209 . nop b somewhere_else
9210 . b somewhere_else nop
9211 . new_page: new_page:
9213 insn = bfd_get_32 (input_bfd, contents + offset);
9214 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9215 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9216 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9217 || ((insn & (0x3f << 26)) == (19u << 26)
9218 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9219 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9222 patch_addr = (start_addr + input_section->size
9223 - relax_info->workaround_size);
9224 patch_addr = (patch_addr + 15) & -16;
9225 patch_off = patch_addr - start_addr;
9226 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9229 && rel->r_offset >= offset
9230 && rel->r_offset < offset + 4)
9234 /* If the insn we are patching had a reloc, adjust the
9235 reloc r_offset so that the reloc applies to the moved
9236 location. This matters for -r and --emit-relocs. */
9237 if (rel + 1 != relend)
9239 Elf_Internal_Rela tmp = *rel;
9241 /* Keep the relocs sorted by r_offset. */
9242 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9245 relend[-1].r_offset += patch_off - offset;
9247 /* Adjust REL16 addends too. */
9248 switch (ELF32_R_TYPE (relend[-1].r_info))
9251 case R_PPC_REL16_LO:
9252 case R_PPC_REL16_HI:
9253 case R_PPC_REL16_HA:
9254 relend[-1].r_addend += patch_off - offset;
9260 /* If we are building a PIE or shared library with
9261 non-PIC objects, perhaps we had a dynamic reloc too?
9262 If so, the dynamic reloc must move with the insn. */
9263 sreloc = elf_section_data (input_section)->sreloc;
9266 Elf32_External_Rela *slo, *shi, *srelend;
9269 slo = (Elf32_External_Rela *) sreloc->contents;
9270 shi = srelend = slo + sreloc->reloc_count;
9271 soffset = (offset + input_section->output_section->vma
9272 + input_section->output_offset);
9275 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9276 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9278 if (outrel.r_offset < soffset)
9280 else if (outrel.r_offset > soffset + 3)
9284 if (srel + 1 != srelend)
9286 memmove (srel, srel + 1,
9287 (srelend - (srel + 1)) * sizeof (*srel));
9290 outrel.r_offset += patch_off - offset;
9291 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9301 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9302 && (insn & 2) == 0 /* relative */)
9304 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9306 delta += offset - patch_off;
9307 if (bfd_link_relocatable (info) && rel != NULL)
9309 if (!bfd_link_relocatable (info) && rel != NULL)
9311 enum elf_ppc_reloc_type r_type;
9313 r_type = ELF32_R_TYPE (relend[-1].r_info);
9314 if (r_type == R_PPC_REL14_BRTAKEN)
9315 insn |= BRANCH_PREDICT_BIT;
9316 else if (r_type == R_PPC_REL14_BRNTAKEN)
9317 insn &= ~BRANCH_PREDICT_BIT;
9319 BFD_ASSERT (r_type == R_PPC_REL14);
9321 if ((r_type == R_PPC_REL14_BRTAKEN
9322 || r_type == R_PPC_REL14_BRNTAKEN)
9323 && delta + 0x8000 < 0x10000
9324 && (bfd_signed_vma) delta < 0)
9325 insn ^= BRANCH_PREDICT_BIT;
9327 if (delta + 0x8000 < 0x10000)
9329 bfd_put_32 (input_bfd,
9330 (insn & ~0xfffc) | (delta & 0xfffc),
9331 contents + patch_off);
9333 bfd_put_32 (input_bfd,
9334 B | ((offset + 4 - patch_off) & 0x3fffffc),
9335 contents + patch_off);
9342 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9344 relend[-1].r_offset += 8;
9345 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9347 bfd_put_32 (input_bfd,
9348 (insn & ~0xfffc) | 8,
9349 contents + patch_off);
9351 bfd_put_32 (input_bfd,
9352 B | ((offset + 4 - patch_off) & 0x3fffffc),
9353 contents + patch_off);
9355 bfd_put_32 (input_bfd,
9356 B | ((delta - 8) & 0x3fffffc),
9357 contents + patch_off);
9363 bfd_put_32 (input_bfd, insn, contents + patch_off);
9365 bfd_put_32 (input_bfd,
9366 B | ((offset + 4 - patch_off) & 0x3fffffc),
9367 contents + patch_off);
9370 BFD_ASSERT (patch_off <= input_section->size);
9371 relax_info->workaround_size = input_section->size - patch_off;
9378 /* Write out the PLT relocs and entries for H. */
9381 write_global_sym_plt (struct elf_link_hash_entry *h, void *inf)
9383 struct bfd_link_info *info = (struct bfd_link_info *) inf;
9384 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9385 struct plt_entry *ent;
9386 bfd_boolean doneone;
9389 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9390 if (ent->plt.offset != (bfd_vma) -1)
9394 Elf_Internal_Rela rela;
9396 bfd_vma reloc_index;
9397 asection *plt = htab->elf.splt;
9398 asection *relplt = htab->elf.srelplt;
9400 if (htab->plt_type == PLT_NEW
9401 || !htab->elf.dynamic_sections_created
9402 || h->dynindx == -1)
9403 reloc_index = ent->plt.offset / 4;
9406 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9407 / htab->plt_slot_size);
9408 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9409 && htab->plt_type == PLT_OLD)
9410 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9413 /* This symbol has an entry in the procedure linkage table.
9415 if (htab->plt_type == PLT_VXWORKS
9416 && htab->elf.dynamic_sections_created
9417 && h->dynindx != -1)
9420 const bfd_vma *plt_entry;
9422 /* The first three entries in .got.plt are reserved. */
9423 got_offset = (reloc_index + 3) * 4;
9425 /* Use the right PLT. */
9426 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9427 : ppc_elf_vxworks_plt_entry;
9429 /* Fill in the .plt on VxWorks. */
9430 if (bfd_link_pic (info))
9432 bfd_put_32 (info->output_bfd,
9433 plt_entry[0] | PPC_HA (got_offset),
9434 plt->contents + ent->plt.offset + 0);
9435 bfd_put_32 (info->output_bfd,
9436 plt_entry[1] | PPC_LO (got_offset),
9437 plt->contents + ent->plt.offset + 4);
9441 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9443 bfd_put_32 (info->output_bfd,
9444 plt_entry[0] | PPC_HA (got_loc),
9445 plt->contents + ent->plt.offset + 0);
9446 bfd_put_32 (info->output_bfd,
9447 plt_entry[1] | PPC_LO (got_loc),
9448 plt->contents + ent->plt.offset + 4);
9451 bfd_put_32 (info->output_bfd, plt_entry[2],
9452 plt->contents + ent->plt.offset + 8);
9453 bfd_put_32 (info->output_bfd, plt_entry[3],
9454 plt->contents + ent->plt.offset + 12);
9456 /* This instruction is an immediate load. The value loaded is
9457 the byte offset of the R_PPC_JMP_SLOT relocation from the
9458 start of the .rela.plt section. The value is stored in the
9459 low-order 16 bits of the load instruction. */
9460 /* NOTE: It appears that this is now an index rather than a
9461 prescaled offset. */
9462 bfd_put_32 (info->output_bfd,
9463 plt_entry[4] | reloc_index,
9464 plt->contents + ent->plt.offset + 16);
9465 /* This instruction is a PC-relative branch whose target is
9466 the start of the PLT section. The address of this branch
9467 instruction is 20 bytes beyond the start of this PLT entry.
9468 The address is encoded in bits 6-29, inclusive. The value
9469 stored is right-shifted by two bits, permitting a 26-bit
9471 bfd_put_32 (info->output_bfd,
9473 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9474 plt->contents + ent->plt.offset + 20);
9475 bfd_put_32 (info->output_bfd, plt_entry[6],
9476 plt->contents + ent->plt.offset + 24);
9477 bfd_put_32 (info->output_bfd, plt_entry[7],
9478 plt->contents + ent->plt.offset + 28);
9480 /* Fill in the GOT entry corresponding to this PLT slot with
9481 the address immediately after the "bctr" instruction
9482 in this PLT entry. */
9483 bfd_put_32 (info->output_bfd, (plt->output_section->vma
9484 + plt->output_offset
9485 + ent->plt.offset + 16),
9486 htab->elf.sgotplt->contents + got_offset);
9488 if (!bfd_link_pic (info))
9490 /* Fill in a couple of entries in .rela.plt.unloaded. */
9491 loc = htab->srelplt2->contents
9492 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9493 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9494 * sizeof (Elf32_External_Rela));
9496 /* Provide the @ha relocation for the first instruction. */
9497 rela.r_offset = (plt->output_section->vma
9498 + plt->output_offset
9499 + ent->plt.offset + 2);
9500 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9502 rela.r_addend = got_offset;
9503 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9504 loc += sizeof (Elf32_External_Rela);
9506 /* Provide the @l relocation for the second instruction. */
9507 rela.r_offset = (plt->output_section->vma
9508 + plt->output_offset
9509 + ent->plt.offset + 6);
9510 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9512 rela.r_addend = got_offset;
9513 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9514 loc += sizeof (Elf32_External_Rela);
9516 /* Provide a relocation for the GOT entry corresponding to this
9517 PLT slot. Point it at the middle of the .plt entry. */
9518 rela.r_offset = (htab->elf.sgotplt->output_section->vma
9519 + htab->elf.sgotplt->output_offset
9521 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9523 rela.r_addend = ent->plt.offset + 16;
9524 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9527 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9528 In particular, the offset for the relocation is not the
9529 address of the PLT entry for this function, as specified
9530 by the ABI. Instead, the offset is set to the address of
9531 the GOT slot for this function. See EABI 4.4.4.1. */
9532 rela.r_offset = (htab->elf.sgotplt->output_section->vma
9533 + htab->elf.sgotplt->output_offset
9540 if (!htab->elf.dynamic_sections_created
9541 || h->dynindx == -1)
9543 if (h->type == STT_GNU_IFUNC)
9545 plt = htab->elf.iplt;
9546 relplt = htab->elf.irelplt;
9550 plt = htab->pltlocal;
9551 relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL;
9554 && (h->root.type == bfd_link_hash_defined
9555 || h->root.type == bfd_link_hash_defweak))
9556 rela.r_addend = SYM_VAL (h);
9561 loc = plt->contents + ent->plt.offset;
9562 bfd_put_32 (info->output_bfd, rela.r_addend, loc);
9566 rela.r_offset = (plt->output_section->vma
9567 + plt->output_offset
9570 if (htab->plt_type == PLT_OLD
9571 || !htab->elf.dynamic_sections_created
9572 || h->dynindx == -1)
9574 /* We don't need to fill in the .plt. The ppc dynamic
9575 linker will fill it in. */
9579 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9580 + htab->glink->output_section->vma
9581 + htab->glink->output_offset);
9582 bfd_put_32 (info->output_bfd, val,
9583 plt->contents + ent->plt.offset);
9590 /* Fill in the entry in the .rela.plt section. */
9591 if (!htab->elf.dynamic_sections_created
9592 || h->dynindx == -1)
9594 if (h->type == STT_GNU_IFUNC)
9595 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9597 rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9598 loc = relplt->contents + (relplt->reloc_count++
9599 * sizeof (Elf32_External_Rela));
9600 htab->local_ifunc_resolver = 1;
9604 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9605 loc = relplt->contents + (reloc_index
9606 * sizeof (Elf32_External_Rela));
9607 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
9608 htab->maybe_local_ifunc_resolver = 1;
9610 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9615 if (htab->plt_type == PLT_NEW
9616 || !htab->elf.dynamic_sections_created
9617 || h->dynindx == -1)
9620 asection *plt = htab->elf.splt;
9622 if (!htab->elf.dynamic_sections_created
9623 || h->dynindx == -1)
9625 if (h->type == STT_GNU_IFUNC)
9626 plt = htab->elf.iplt;
9631 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9632 write_glink_stub (h, ent, plt, p, info);
9634 if (!bfd_link_pic (info))
9635 /* We only need one non-PIC glink stub. */
9644 /* Finish up PLT handling. */
9647 ppc_finish_symbols (struct bfd_link_info *info)
9649 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9655 elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info);
9657 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9659 bfd_vma *local_got, *end_local_got;
9660 struct plt_entry **local_plt, **lplt, **end_local_plt;
9661 Elf_Internal_Shdr *symtab_hdr;
9662 bfd_size_type locsymcount;
9663 Elf_Internal_Sym *local_syms = NULL;
9664 struct plt_entry *ent;
9666 if (!is_ppc_elf (ibfd))
9669 local_got = elf_local_got_offsets (ibfd);
9673 symtab_hdr = &elf_symtab_hdr (ibfd);
9674 locsymcount = symtab_hdr->sh_info;
9675 end_local_got = local_got + locsymcount;
9676 local_plt = (struct plt_entry **) end_local_got;
9677 end_local_plt = local_plt + locsymcount;
9678 for (lplt = local_plt; lplt < end_local_plt; ++lplt)
9679 for (ent = *lplt; ent != NULL; ent = ent->next)
9681 if (ent->plt.offset != (bfd_vma) -1)
9683 Elf_Internal_Sym *sym;
9685 asection *plt, *relplt;
9688 Elf_Internal_Rela rela;
9690 if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms,
9691 lplt - local_plt, ibfd))
9693 if (local_syms != NULL
9694 && symtab_hdr->contents != (unsigned char *) local_syms)
9699 val = sym->st_value;
9700 if (sym_sec != NULL && sym_sec->output_section != NULL)
9701 val += sym_sec->output_offset + sym_sec->output_section->vma;
9703 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9705 htab->local_ifunc_resolver = 1;
9706 plt = htab->elf.iplt;
9707 relplt = htab->elf.irelplt;
9708 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9712 plt = htab->pltlocal;
9713 if (bfd_link_pic (info))
9715 relplt = htab->relpltlocal;
9716 rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9720 loc = plt->contents + ent->plt.offset;
9721 bfd_put_32 (info->output_bfd, val, loc);
9726 rela.r_offset = (ent->plt.offset
9727 + plt->output_offset
9728 + plt->output_section->vma);
9729 rela.r_addend = val;
9730 loc = relplt->contents + (relplt->reloc_count++
9731 * sizeof (Elf32_External_Rela));
9732 bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
9734 if ((ent->glink_offset & 1) == 0)
9736 unsigned char *p = ((unsigned char *) htab->glink->contents
9737 + ent->glink_offset);
9739 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
9740 ent->glink_offset |= 1;
9744 if (local_syms != NULL
9745 && symtab_hdr->contents != (unsigned char *) local_syms)
9747 if (!info->keep_memory)
9750 symtab_hdr->contents = (unsigned char *) local_syms;
9756 /* Finish up dynamic symbol handling. We set the contents of various
9757 dynamic sections here. */
9760 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9761 struct bfd_link_info *info,
9762 struct elf_link_hash_entry *h,
9763 Elf_Internal_Sym *sym)
9765 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9766 struct plt_entry *ent;
9769 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9770 h->root.root.string);
9774 || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info)))
9775 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9776 if (ent->plt.offset != (bfd_vma) -1)
9778 if (!h->def_regular)
9780 /* Mark the symbol as undefined, rather than as
9781 defined in the .plt section. Leave the value if
9782 there were any relocations where pointer equality
9783 matters (this is a clue for the dynamic linker, to
9784 make function pointer comparisons work between an
9785 application and shared library), otherwise set it
9787 sym->st_shndx = SHN_UNDEF;
9788 if (!h->pointer_equality_needed)
9790 else if (!h->ref_regular_nonweak)
9792 /* This breaks function pointer comparisons, but
9793 that is better than breaking tests for a NULL
9794 function pointer. */
9800 /* Set the value of ifunc symbols in a non-pie
9801 executable to the glink entry. This is to avoid
9802 text relocations. We can't do this for ifunc in
9803 allocate_dynrelocs, as we do for normal dynamic
9804 function symbols with plt entries, because we need
9805 to keep the original value around for the ifunc
9808 = (_bfd_elf_section_from_bfd_section
9809 (info->output_bfd, htab->glink->output_section));
9810 sym->st_value = (ent->glink_offset
9811 + htab->glink->output_offset
9812 + htab->glink->output_section->vma);
9820 Elf_Internal_Rela rela;
9823 /* This symbols needs a copy reloc. Set it up. */
9826 fprintf (stderr, ", copy");
9829 BFD_ASSERT (h->dynindx != -1);
9831 if (ppc_elf_hash_entry (h)->has_sda_refs)
9833 else if (h->root.u.def.section == htab->elf.sdynrelro)
9834 s = htab->elf.sreldynrelro;
9836 s = htab->elf.srelbss;
9837 BFD_ASSERT (s != NULL);
9839 rela.r_offset = SYM_VAL (h);
9840 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9842 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9843 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9847 fprintf (stderr, "\n");
9853 static enum elf_reloc_type_class
9854 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9855 const asection *rel_sec,
9856 const Elf_Internal_Rela *rela)
9858 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9860 if (rel_sec == htab->elf.irelplt)
9861 return reloc_class_ifunc;
9863 switch (ELF32_R_TYPE (rela->r_info))
9865 case R_PPC_RELATIVE:
9866 return reloc_class_relative;
9867 case R_PPC_JMP_SLOT:
9868 return reloc_class_plt;
9870 return reloc_class_copy;
9872 return reloc_class_normal;
9876 /* Finish up the dynamic sections. */
9879 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9880 struct bfd_link_info *info)
9883 struct ppc_elf_link_hash_table *htab;
9886 bfd_boolean ret = TRUE;
9889 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9892 htab = ppc_elf_hash_table (info);
9893 dynobj = htab->elf.dynobj;
9894 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9897 if (htab->elf.hgot != NULL)
9898 got = SYM_VAL (htab->elf.hgot);
9900 if (htab->elf.dynamic_sections_created)
9902 Elf32_External_Dyn *dyncon, *dynconend;
9904 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
9906 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9907 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9908 for (; dyncon < dynconend; dyncon++)
9910 Elf_Internal_Dyn dyn;
9913 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9918 if (htab->is_vxworks)
9919 s = htab->elf.sgotplt;
9922 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9926 dyn.d_un.d_val = htab->elf.srelplt->size;
9930 s = htab->elf.srelplt;
9931 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9935 dyn.d_un.d_ptr = got;
9939 if (htab->local_ifunc_resolver)
9940 info->callbacks->einfo
9941 (_("%X%P: text relocations and GNU indirect "
9942 "functions will result in a segfault at runtime\n"));
9943 else if (htab->maybe_local_ifunc_resolver)
9944 info->callbacks->einfo
9945 (_("%P: warning: text relocations and GNU indirect "
9946 "functions may result in a segfault at runtime\n"));
9950 if (htab->is_vxworks
9951 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9956 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9960 if (htab->elf.sgot != NULL
9961 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
9963 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
9964 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
9966 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9968 p += htab->elf.hgot->root.u.def.value;
9969 if (htab->plt_type == PLT_OLD)
9971 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9972 so that a function can easily find the address of
9973 _GLOBAL_OFFSET_TABLE_. */
9974 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9975 < htab->elf.hgot->root.u.def.section->size);
9976 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9981 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9982 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9983 < htab->elf.hgot->root.u.def.section->size);
9984 bfd_put_32 (output_bfd, val, p);
9989 /* xgettext:c-format */
9990 _bfd_error_handler (_("%s not defined in linker created %pA"),
9991 htab->elf.hgot->root.root.string,
9992 (htab->elf.sgotplt != NULL
9993 ? htab->elf.sgotplt : htab->elf.sgot));
9994 bfd_set_error (bfd_error_bad_value);
9998 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10001 /* Fill in the first entry in the VxWorks procedure linkage table. */
10002 if (htab->is_vxworks
10003 && htab->elf.splt != NULL
10004 && htab->elf.splt->size != 0
10005 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10007 asection *splt = htab->elf.splt;
10008 /* Use the right PLT. */
10009 const bfd_vma *plt_entry = (bfd_link_pic (info)
10010 ? ppc_elf_vxworks_pic_plt0_entry
10011 : ppc_elf_vxworks_plt0_entry);
10013 if (!bfd_link_pic (info))
10015 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10017 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10018 splt->contents + 0);
10019 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10020 splt->contents + 4);
10024 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10025 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10027 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10028 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10029 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10030 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10031 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10032 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10034 if (! bfd_link_pic (info))
10036 Elf_Internal_Rela rela;
10039 loc = htab->srelplt2->contents;
10041 /* Output the @ha relocation for the first instruction. */
10042 rela.r_offset = (htab->elf.splt->output_section->vma
10043 + htab->elf.splt->output_offset
10045 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10047 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10048 loc += sizeof (Elf32_External_Rela);
10050 /* Output the @l relocation for the second instruction. */
10051 rela.r_offset = (htab->elf.splt->output_section->vma
10052 + htab->elf.splt->output_offset
10054 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10056 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10057 loc += sizeof (Elf32_External_Rela);
10059 /* Fix up the remaining relocations. They may have the wrong
10060 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10061 in which symbols were output. */
10062 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10064 Elf_Internal_Rela rel;
10066 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10067 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10068 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10069 loc += sizeof (Elf32_External_Rela);
10071 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10072 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10073 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10074 loc += sizeof (Elf32_External_Rela);
10076 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10077 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10078 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10079 loc += sizeof (Elf32_External_Rela);
10084 if (htab->glink != NULL
10085 && htab->glink->contents != NULL
10086 && htab->elf.dynamic_sections_created)
10089 unsigned char *endp;
10093 * PIC glink code is the following:
10095 * # ith PLT code stub.
10096 * addis 11,30,(plt+(i-1)*4-got)@ha
10097 * lwz 11,(plt+(i-1)*4-got)@l(11)
10101 * # A table of branches, one for each plt entry.
10102 * # The idea is that the plt call stub loads ctr and r11 with these
10103 * # addresses, so (r11 - res_0) gives the plt index * 4.
10104 * res_0: b PLTresolve
10105 * res_1: b PLTresolve
10107 * # Some number of entries towards the end can be nops
10113 * addis 11,11,(1f-res_0)@ha
10116 * 1: addi 11,11,(1b-res_0)@l
10119 * sub 11,11,12 # r11 = index * 4
10120 * addis 12,12,(got+4-1b)@ha
10121 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10122 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10125 * add 11,0,11 # r11 = index * 12 = reloc offset.
10128 * Non-PIC glink code is a little simpler.
10130 * # ith PLT code stub.
10131 * lis 11,(plt+(i-1)*4)@ha
10132 * lwz 11,(plt+(i-1)*4)@l(11)
10136 * The branch table is the same, then comes
10139 * lis 12,(got+4)@ha
10140 * addis 11,11,(-res_0)@ha
10141 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10142 * addi 11,11,(-res_0)@l # r11 = index * 4
10145 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10146 * add 11,0,11 # r11 = index * 12 = reloc offset.
10150 /* Build the branch table, one for each plt entry (less one),
10151 and perhaps some padding. */
10152 p = htab->glink->contents;
10153 p += htab->glink_pltresolve;
10154 endp = htab->glink->contents;
10155 endp += htab->glink->size - GLINK_PLTRESOLVE;
10156 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10158 bfd_put_32 (output_bfd, B + endp - p, p);
10163 bfd_put_32 (output_bfd, NOP, p);
10167 res0 = (htab->glink_pltresolve
10168 + htab->glink->output_section->vma
10169 + htab->glink->output_offset);
10171 if (htab->params->ppc476_workaround)
10173 /* Ensure that a call stub at the end of a page doesn't
10174 result in prefetch over the end of the page into the
10175 glink branch table. */
10176 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10178 bfd_vma glink_start = (htab->glink->output_section->vma
10179 + htab->glink->output_offset);
10181 for (page_addr = res0 & -pagesize;
10182 page_addr > glink_start;
10183 page_addr -= pagesize)
10185 /* We have a plt call stub that may need fixing. */
10189 loc = htab->glink->contents + page_addr - 4 - glink_start;
10190 insn = bfd_get_32 (output_bfd, loc);
10193 /* By alignment, we know that there must be at least
10194 one other call stub before this one. */
10195 insn = bfd_get_32 (output_bfd, loc - 16);
10197 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10199 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10204 /* Last comes the PLTresolve stub. */
10205 endp = p + GLINK_PLTRESOLVE;
10206 if (bfd_link_pic (info))
10210 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10211 + htab->glink->output_section->vma
10212 + htab->glink->output_offset);
10214 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10216 bfd_put_32 (output_bfd, MFLR_0, p);
10218 bfd_put_32 (output_bfd, BCL_20_31, p);
10220 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10222 bfd_put_32 (output_bfd, MFLR_12, p);
10224 bfd_put_32 (output_bfd, MTLR_0, p);
10226 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10228 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10230 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10232 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10234 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10239 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10241 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10244 bfd_put_32 (output_bfd, MTCTR_0, p);
10246 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10250 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10252 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10254 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10255 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10257 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10259 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10261 bfd_put_32 (output_bfd, MTCTR_0, p);
10263 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10265 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10266 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10268 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10271 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10273 bfd_put_32 (output_bfd, BCTR, p);
10277 bfd_put_32 (output_bfd,
10278 htab->params->ppc476_workaround ? BA : NOP, p);
10281 BFD_ASSERT (p == endp);
10284 if (htab->glink_eh_frame != NULL
10285 && htab->glink_eh_frame->contents != NULL)
10287 unsigned char *p = htab->glink_eh_frame->contents;
10290 p += sizeof (glink_eh_frame_cie);
10295 /* Offset to .glink. */
10296 val = (htab->glink->output_section->vma
10297 + htab->glink->output_offset);
10298 val -= (htab->glink_eh_frame->output_section->vma
10299 + htab->glink_eh_frame->output_offset);
10300 val -= p - htab->glink_eh_frame->contents;
10301 bfd_put_32 (htab->elf.dynobj, val, p);
10303 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10304 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10305 htab->glink_eh_frame,
10306 htab->glink_eh_frame->contents))
10313 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10314 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10315 #define TARGET_BIG_SYM powerpc_elf32_vec
10316 #define TARGET_BIG_NAME "elf32-powerpc"
10317 #define ELF_ARCH bfd_arch_powerpc
10318 #define ELF_TARGET_ID PPC32_ELF_DATA
10319 #define ELF_MACHINE_CODE EM_PPC
10320 #define ELF_MAXPAGESIZE 0x10000
10321 #define ELF_COMMONPAGESIZE 0x1000
10322 #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE
10323 #define elf_info_to_howto ppc_elf_info_to_howto
10325 #ifdef EM_CYGNUS_POWERPC
10326 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10330 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10333 #define elf_backend_plt_not_loaded 1
10334 #define elf_backend_want_dynrelro 1
10335 #define elf_backend_can_gc_sections 1
10336 #define elf_backend_can_refcount 1
10337 #define elf_backend_rela_normal 1
10338 #define elf_backend_caches_rawsize 1
10340 #define bfd_elf32_mkobject ppc_elf_mkobject
10341 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10342 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10343 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10344 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10345 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10346 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10347 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10349 #define elf_backend_object_p ppc_elf_object_p
10350 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10351 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10352 #define elf_backend_relocate_section ppc_elf_relocate_section
10353 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10354 #define elf_backend_check_relocs ppc_elf_check_relocs
10355 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10356 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10357 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10358 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10359 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10360 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10361 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10362 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10363 #define elf_backend_fake_sections ppc_elf_fake_sections
10364 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10365 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10366 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10367 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10368 #define elf_backend_write_core_note ppc_elf_write_core_note
10369 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10370 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10371 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10372 #define elf_backend_write_section ppc_elf_write_section
10373 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10374 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10375 #define elf_backend_action_discarded ppc_elf_action_discarded
10376 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10377 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10379 #include "elf32-target.h"
10381 /* FreeBSD Target */
10383 #undef TARGET_LITTLE_SYM
10384 #undef TARGET_LITTLE_NAME
10386 #undef TARGET_BIG_SYM
10387 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10388 #undef TARGET_BIG_NAME
10389 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10392 #define ELF_OSABI ELFOSABI_FREEBSD
10395 #define elf32_bed elf32_powerpc_fbsd_bed
10397 #include "elf32-target.h"
10399 /* VxWorks Target */
10401 #undef TARGET_LITTLE_SYM
10402 #undef TARGET_LITTLE_NAME
10404 #undef TARGET_BIG_SYM
10405 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10406 #undef TARGET_BIG_NAME
10407 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10411 /* VxWorks uses the elf default section flags for .plt. */
10412 static const struct bfd_elf_special_section *
10413 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10415 if (sec->name == NULL)
10418 if (strcmp (sec->name, ".plt") == 0)
10419 return _bfd_elf_get_sec_type_attr (abfd, sec);
10421 return ppc_elf_get_sec_type_attr (abfd, sec);
10424 /* Like ppc_elf_link_hash_table_create, but overrides
10425 appropriately for VxWorks. */
10426 static struct bfd_link_hash_table *
10427 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10429 struct bfd_link_hash_table *ret;
10431 ret = ppc_elf_link_hash_table_create (abfd);
10434 struct ppc_elf_link_hash_table *htab
10435 = (struct ppc_elf_link_hash_table *)ret;
10436 htab->is_vxworks = 1;
10437 htab->plt_type = PLT_VXWORKS;
10438 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10439 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10440 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10445 /* Tweak magic VxWorks symbols as they are loaded. */
10447 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10448 struct bfd_link_info *info,
10449 Elf_Internal_Sym *sym,
10450 const char **namep,
10455 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10459 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10463 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10465 ppc_elf_final_write_processing (abfd, linker);
10466 elf_vxworks_final_write_processing (abfd, linker);
10469 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10471 #undef elf_backend_want_plt_sym
10472 #define elf_backend_want_plt_sym 1
10473 #undef elf_backend_want_got_plt
10474 #define elf_backend_want_got_plt 1
10475 #undef elf_backend_got_symbol_offset
10476 #define elf_backend_got_symbol_offset 0
10477 #undef elf_backend_plt_not_loaded
10478 #define elf_backend_plt_not_loaded 0
10479 #undef elf_backend_plt_readonly
10480 #define elf_backend_plt_readonly 1
10481 #undef elf_backend_got_header_size
10482 #define elf_backend_got_header_size 12
10483 #undef elf_backend_dtrel_excludes_plt
10484 #define elf_backend_dtrel_excludes_plt 1
10486 #undef bfd_elf32_get_synthetic_symtab
10488 #undef bfd_elf32_bfd_link_hash_table_create
10489 #define bfd_elf32_bfd_link_hash_table_create \
10490 ppc_elf_vxworks_link_hash_table_create
10491 #undef elf_backend_add_symbol_hook
10492 #define elf_backend_add_symbol_hook \
10493 ppc_elf_vxworks_add_symbol_hook
10494 #undef elf_backend_link_output_symbol_hook
10495 #define elf_backend_link_output_symbol_hook \
10496 elf_vxworks_link_output_symbol_hook
10497 #undef elf_backend_final_write_processing
10498 #define elf_backend_final_write_processing \
10499 ppc_elf_vxworks_final_write_processing
10500 #undef elf_backend_get_sec_type_attr
10501 #define elf_backend_get_sec_type_attr \
10502 ppc_elf_vxworks_get_sec_type_attr
10503 #undef elf_backend_emit_relocs
10504 #define elf_backend_emit_relocs \
10505 elf_vxworks_emit_relocs
10508 #define elf32_bed ppc_elf_vxworks_bed
10509 #undef elf_backend_post_process_headers
10511 #include "elf32-target.h"