Commit | Line | Data |
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b352eebf | 1 | /* Support for HPPA 64-bit ELF |
b3adc24a | 2 | Copyright (C) 1999-2020 Free Software Foundation, Inc. |
15bda425 | 3 | |
ae9a127f | 4 | This file is part of BFD, the Binary File Descriptor library. |
15bda425 | 5 | |
ae9a127f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 9 | (at your option) any later version. |
15bda425 | 10 | |
ae9a127f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15bda425 | 15 | |
ae9a127f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
15bda425 | 20 | |
15bda425 | 21 | #include "sysdep.h" |
df7b86aa | 22 | #include "alloca-conf.h" |
3db64b00 | 23 | #include "bfd.h" |
15bda425 JL |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | #include "elf/hppa.h" | |
27 | #include "libhppa.h" | |
28 | #include "elf64-hppa.h" | |
e1fa0163 | 29 | #include "libiberty.h" |
8bc9c892 | 30 | |
15bda425 JL |
31 | #define ARCH_SIZE 64 |
32 | ||
33 | #define PLT_ENTRY_SIZE 0x10 | |
34 | #define DLT_ENTRY_SIZE 0x8 | |
35 | #define OPD_ENTRY_SIZE 0x20 | |
fe8bc63d | 36 | |
15bda425 JL |
37 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
38 | ||
39 | /* The stub is supposed to load the target address and target's DP | |
40 | value out of the PLT, then do an external branch to the target | |
41 | address. | |
42 | ||
43 | LDD PLTOFF(%r27),%r1 | |
44 | BVE (%r1) | |
45 | LDD PLTOFF+8(%r27),%r27 | |
46 | ||
47 | Note that we must use the LDD with a 14 bit displacement, not the one | |
48 | with a 5 bit displacement. */ | |
49 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, | |
50 | 0x53, 0x7b, 0x00, 0x00 }; | |
51 | ||
a03bd320 | 52 | struct elf64_hppa_link_hash_entry |
15bda425 | 53 | { |
a03bd320 | 54 | struct elf_link_hash_entry eh; |
15bda425 JL |
55 | |
56 | /* Offsets for this symbol in various linker sections. */ | |
57 | bfd_vma dlt_offset; | |
58 | bfd_vma plt_offset; | |
59 | bfd_vma opd_offset; | |
60 | bfd_vma stub_offset; | |
61 | ||
15bda425 JL |
62 | /* The index of the (possibly local) symbol in the input bfd and its |
63 | associated BFD. Needed so that we can have relocs against local | |
64 | symbols in shared libraries. */ | |
dc810e39 | 65 | long sym_indx; |
15bda425 JL |
66 | bfd *owner; |
67 | ||
68 | /* Dynamic symbols may need to have two different values. One for | |
69 | the dynamic symbol table, one for the normal symbol table. | |
70 | ||
71 | In such cases we store the symbol's real value and section | |
72 | index here so we can restore the real value before we write | |
73 | the normal symbol table. */ | |
74 | bfd_vma st_value; | |
75 | int st_shndx; | |
76 | ||
77 | /* Used to count non-got, non-plt relocations for delayed sizing | |
78 | of relocation sections. */ | |
79 | struct elf64_hppa_dyn_reloc_entry | |
80 | { | |
81 | /* Next relocation in the chain. */ | |
82 | struct elf64_hppa_dyn_reloc_entry *next; | |
83 | ||
84 | /* The type of the relocation. */ | |
85 | int type; | |
86 | ||
87 | /* The input section of the relocation. */ | |
88 | asection *sec; | |
89 | ||
a03bd320 DA |
90 | /* Number of relocs copied in this section. */ |
91 | bfd_size_type count; | |
92 | ||
15bda425 JL |
93 | /* The index of the section symbol for the input section of |
94 | the relocation. Only needed when building shared libraries. */ | |
95 | int sec_symndx; | |
96 | ||
97 | /* The offset within the input section of the relocation. */ | |
98 | bfd_vma offset; | |
99 | ||
100 | /* The addend for the relocation. */ | |
101 | bfd_vma addend; | |
102 | ||
103 | } *reloc_entries; | |
104 | ||
105 | /* Nonzero if this symbol needs an entry in one of the linker | |
106 | sections. */ | |
107 | unsigned want_dlt; | |
108 | unsigned want_plt; | |
109 | unsigned want_opd; | |
110 | unsigned want_stub; | |
111 | }; | |
112 | ||
15bda425 JL |
113 | struct elf64_hppa_link_hash_table |
114 | { | |
115 | struct elf_link_hash_table root; | |
116 | ||
117 | /* Shortcuts to get to the various linker defined sections. */ | |
118 | asection *dlt_sec; | |
119 | asection *dlt_rel_sec; | |
15bda425 JL |
120 | asection *opd_sec; |
121 | asection *opd_rel_sec; | |
122 | asection *other_rel_sec; | |
123 | ||
124 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
125 | to slide __gp into the PLT section so that we can continue to use | |
126 | single DP relative instructions to load values out of the PLT. */ | |
127 | bfd_vma gp_offset; | |
128 | ||
129 | /* Note this is not strictly correct. We should create a stub section for | |
130 | each input section with calls. The stub section should be placed before | |
131 | the section with the call. */ | |
132 | asection *stub_sec; | |
133 | ||
134 | bfd_vma text_segment_base; | |
135 | bfd_vma data_segment_base; | |
136 | ||
15bda425 JL |
137 | /* We build tables to map from an input section back to its |
138 | symbol index. This is the BFD for which we currently have | |
139 | a map. */ | |
140 | bfd *section_syms_bfd; | |
141 | ||
142 | /* Array of symbol numbers for each input section attached to the | |
143 | current BFD. */ | |
144 | int *section_syms; | |
145 | }; | |
146 | ||
a03bd320 | 147 | #define hppa_link_hash_table(p) \ |
0f55320b AM |
148 | ((is_elf_hash_table ((p)->hash) \ |
149 | && elf_hash_table_id (elf_hash_table (p)) == HPPA64_ELF_DATA) \ | |
150 | ? (struct elf64_hppa_link_hash_table *) (p)->hash : NULL) | |
15bda425 | 151 | |
a03bd320 DA |
152 | #define hppa_elf_hash_entry(ent) \ |
153 | ((struct elf64_hppa_link_hash_entry *)(ent)) | |
154 | ||
155 | #define eh_name(eh) \ | |
156 | (eh ? eh->root.root.string : "<undef>") | |
157 | ||
15bda425 | 158 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
813c8a3c | 159 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
15bda425 | 160 | |
15bda425 | 161 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create |
813c8a3c DA |
162 | (bfd *abfd); |
163 | ||
15bda425 JL |
164 | /* This must follow the definitions of the various derived linker |
165 | hash tables and shared functions. */ | |
166 | #include "elf-hppa.h" | |
167 | ||
b34976b6 | 168 | static bfd_boolean elf64_hppa_object_p |
813c8a3c | 169 | (bfd *); |
15bda425 | 170 | |
b34976b6 | 171 | static bfd_boolean elf64_hppa_create_dynamic_sections |
813c8a3c | 172 | (bfd *, struct bfd_link_info *); |
15bda425 | 173 | |
b34976b6 | 174 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
813c8a3c | 175 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
15bda425 | 176 | |
b34976b6 | 177 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
813c8a3c | 178 | (struct elf_link_hash_entry *, void *); |
47b7c2db | 179 | |
b34976b6 | 180 | static bfd_boolean elf64_hppa_size_dynamic_sections |
813c8a3c | 181 | (bfd *, struct bfd_link_info *); |
15bda425 | 182 | |
6e0b88f1 | 183 | static int elf64_hppa_link_output_symbol_hook |
813c8a3c DA |
184 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
185 | asection *, struct elf_link_hash_entry *); | |
99c79b2e | 186 | |
b34976b6 | 187 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
813c8a3c DA |
188 | (bfd *, struct bfd_link_info *, |
189 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
fe8bc63d | 190 | |
b34976b6 | 191 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
813c8a3c | 192 | (bfd *, struct bfd_link_info *); |
15bda425 | 193 | |
b34976b6 | 194 | static bfd_boolean elf64_hppa_check_relocs |
813c8a3c DA |
195 | (bfd *, struct bfd_link_info *, |
196 | asection *, const Elf_Internal_Rela *); | |
15bda425 | 197 | |
b34976b6 | 198 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
813c8a3c | 199 | (struct elf_link_hash_entry *, struct bfd_link_info *); |
15bda425 | 200 | |
b34976b6 | 201 | static bfd_boolean elf64_hppa_mark_exported_functions |
813c8a3c | 202 | (struct elf_link_hash_entry *, void *); |
15bda425 | 203 | |
b34976b6 | 204 | static bfd_boolean elf64_hppa_finalize_opd |
a03bd320 | 205 | (struct elf_link_hash_entry *, void *); |
15bda425 | 206 | |
b34976b6 | 207 | static bfd_boolean elf64_hppa_finalize_dlt |
a03bd320 | 208 | (struct elf_link_hash_entry *, void *); |
15bda425 | 209 | |
b34976b6 | 210 | static bfd_boolean allocate_global_data_dlt |
a03bd320 | 211 | (struct elf_link_hash_entry *, void *); |
15bda425 | 212 | |
b34976b6 | 213 | static bfd_boolean allocate_global_data_plt |
a03bd320 | 214 | (struct elf_link_hash_entry *, void *); |
15bda425 | 215 | |
b34976b6 | 216 | static bfd_boolean allocate_global_data_stub |
a03bd320 | 217 | (struct elf_link_hash_entry *, void *); |
15bda425 | 218 | |
b34976b6 | 219 | static bfd_boolean allocate_global_data_opd |
a03bd320 | 220 | (struct elf_link_hash_entry *, void *); |
15bda425 | 221 | |
b34976b6 | 222 | static bfd_boolean get_reloc_section |
813c8a3c | 223 | (bfd *, struct elf64_hppa_link_hash_table *, asection *); |
15bda425 | 224 | |
b34976b6 | 225 | static bfd_boolean count_dyn_reloc |
a03bd320 | 226 | (bfd *, struct elf64_hppa_link_hash_entry *, |
813c8a3c | 227 | int, asection *, int, bfd_vma, bfd_vma); |
15bda425 | 228 | |
b34976b6 | 229 | static bfd_boolean allocate_dynrel_entries |
a03bd320 | 230 | (struct elf_link_hash_entry *, void *); |
15bda425 | 231 | |
b34976b6 | 232 | static bfd_boolean elf64_hppa_finalize_dynreloc |
a03bd320 | 233 | (struct elf_link_hash_entry *, void *); |
15bda425 | 234 | |
b34976b6 | 235 | static bfd_boolean get_opd |
813c8a3c | 236 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 237 | |
b34976b6 | 238 | static bfd_boolean get_plt |
813c8a3c | 239 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 240 | |
b34976b6 | 241 | static bfd_boolean get_dlt |
813c8a3c | 242 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 243 | |
b34976b6 | 244 | static bfd_boolean get_stub |
813c8a3c | 245 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 246 | |
3fab46d0 | 247 | static int elf64_hppa_elf_get_symbol_type |
813c8a3c | 248 | (Elf_Internal_Sym *, int); |
3fab46d0 | 249 | |
a03bd320 | 250 | /* Initialize an entry in the link hash table. */ |
15bda425 | 251 | |
a03bd320 DA |
252 | static struct bfd_hash_entry * |
253 | hppa64_link_hash_newfunc (struct bfd_hash_entry *entry, | |
254 | struct bfd_hash_table *table, | |
255 | const char *string) | |
15bda425 | 256 | { |
15bda425 JL |
257 | /* Allocate the structure if it has not already been allocated by a |
258 | subclass. */ | |
a03bd320 DA |
259 | if (entry == NULL) |
260 | { | |
261 | entry = bfd_hash_allocate (table, | |
262 | sizeof (struct elf64_hppa_link_hash_entry)); | |
263 | if (entry == NULL) | |
07d6d2b8 | 264 | return entry; |
a03bd320 | 265 | } |
15bda425 | 266 | |
15bda425 | 267 | /* Call the allocation method of the superclass. */ |
a03bd320 DA |
268 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
269 | if (entry != NULL) | |
270 | { | |
271 | struct elf64_hppa_link_hash_entry *hh; | |
15bda425 | 272 | |
a03bd320 DA |
273 | /* Initialize our local data. All zeros. */ |
274 | hh = hppa_elf_hash_entry (entry); | |
275 | memset (&hh->dlt_offset, 0, | |
276 | (sizeof (struct elf64_hppa_link_hash_entry) | |
277 | - offsetof (struct elf64_hppa_link_hash_entry, dlt_offset))); | |
278 | } | |
336549c1 | 279 | |
a03bd320 | 280 | return entry; |
15bda425 JL |
281 | } |
282 | ||
283 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
284 | derived hash table to keep information specific to the PA ElF | |
285 | linker (without using static variables). */ | |
286 | ||
287 | static struct bfd_link_hash_table* | |
813c8a3c | 288 | elf64_hppa_hash_table_create (bfd *abfd) |
15bda425 | 289 | { |
a03bd320 | 290 | struct elf64_hppa_link_hash_table *htab; |
986f0783 | 291 | size_t amt = sizeof (*htab); |
15bda425 | 292 | |
22cdc249 | 293 | htab = bfd_zmalloc (amt); |
a03bd320 DA |
294 | if (htab == NULL) |
295 | return NULL; | |
15bda425 | 296 | |
a03bd320 DA |
297 | if (!_bfd_elf_link_hash_table_init (&htab->root, abfd, |
298 | hppa64_link_hash_newfunc, | |
4dfe6ac6 NC |
299 | sizeof (struct elf64_hppa_link_hash_entry), |
300 | HPPA64_ELF_DATA)) | |
a03bd320 | 301 | { |
22cdc249 | 302 | free (htab); |
a03bd320 DA |
303 | return NULL; |
304 | } | |
15bda425 | 305 | |
3084d7a2 | 306 | htab->root.dt_pltgot_required = TRUE; |
a03bd320 DA |
307 | htab->text_segment_base = (bfd_vma) -1; |
308 | htab->data_segment_base = (bfd_vma) -1; | |
15bda425 | 309 | |
a03bd320 | 310 | return &htab->root.root; |
15bda425 JL |
311 | } |
312 | \f | |
313 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. | |
314 | ||
315 | Additionally we set the default architecture and machine. */ | |
b34976b6 | 316 | static bfd_boolean |
813c8a3c | 317 | elf64_hppa_object_p (bfd *abfd) |
15bda425 | 318 | { |
24a5e751 L |
319 | Elf_Internal_Ehdr * i_ehdrp; |
320 | unsigned int flags; | |
d9634ba1 | 321 | |
24a5e751 L |
322 | i_ehdrp = elf_elfheader (abfd); |
323 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) | |
324 | { | |
9c55345c | 325 | /* GCC on hppa-linux produces binaries with OSABI=GNU, |
6c21aa76 | 326 | but the kernel produces corefiles with OSABI=SysV. */ |
9c55345c | 327 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU |
d97a8924 | 328 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ |
b34976b6 | 329 | return FALSE; |
24a5e751 L |
330 | } |
331 | else | |
332 | { | |
d97a8924 DA |
333 | /* HPUX produces binaries with OSABI=HPUX, |
334 | but the kernel produces corefiles with OSABI=SysV. */ | |
335 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX | |
336 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 337 | return FALSE; |
24a5e751 L |
338 | } |
339 | ||
340 | flags = i_ehdrp->e_flags; | |
d9634ba1 AM |
341 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
342 | { | |
343 | case EFA_PARISC_1_0: | |
344 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
345 | case EFA_PARISC_1_1: | |
346 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
347 | case EFA_PARISC_2_0: | |
d97a8924 | 348 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) |
07d6d2b8 | 349 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); |
d97a8924 | 350 | else |
07d6d2b8 | 351 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); |
d9634ba1 AM |
352 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: |
353 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
354 | } | |
355 | /* Don't be fussy. */ | |
b34976b6 | 356 | return TRUE; |
15bda425 JL |
357 | } |
358 | ||
359 | /* Given section type (hdr->sh_type), return a boolean indicating | |
360 | whether or not the section is an elf64-hppa specific section. */ | |
b34976b6 | 361 | static bfd_boolean |
6dc132d9 L |
362 | elf64_hppa_section_from_shdr (bfd *abfd, |
363 | Elf_Internal_Shdr *hdr, | |
364 | const char *name, | |
365 | int shindex) | |
15bda425 | 366 | { |
15bda425 JL |
367 | switch (hdr->sh_type) |
368 | { | |
369 | case SHT_PARISC_EXT: | |
370 | if (strcmp (name, ".PARISC.archext") != 0) | |
b34976b6 | 371 | return FALSE; |
15bda425 JL |
372 | break; |
373 | case SHT_PARISC_UNWIND: | |
374 | if (strcmp (name, ".PARISC.unwind") != 0) | |
b34976b6 | 375 | return FALSE; |
15bda425 JL |
376 | break; |
377 | case SHT_PARISC_DOC: | |
378 | case SHT_PARISC_ANNOT: | |
379 | default: | |
b34976b6 | 380 | return FALSE; |
15bda425 JL |
381 | } |
382 | ||
6dc132d9 | 383 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 384 | return FALSE; |
15bda425 | 385 | |
bf577467 AM |
386 | return ((hdr->sh_flags & SHF_PARISC_SHORT) == 0 |
387 | || bfd_set_section_flags (hdr->bfd_section, | |
388 | hdr->bfd_section->flags | SEC_SMALL_DATA)); | |
15bda425 JL |
389 | } |
390 | ||
15bda425 JL |
391 | /* SEC is a section containing relocs for an input BFD when linking; return |
392 | a suitable section for holding relocs in the output BFD for a link. */ | |
393 | ||
b34976b6 | 394 | static bfd_boolean |
813c8a3c DA |
395 | get_reloc_section (bfd *abfd, |
396 | struct elf64_hppa_link_hash_table *hppa_info, | |
397 | asection *sec) | |
15bda425 JL |
398 | { |
399 | const char *srel_name; | |
400 | asection *srel; | |
401 | bfd *dynobj; | |
402 | ||
403 | srel_name = (bfd_elf_string_from_elf_section | |
404 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
d4730f92 | 405 | _bfd_elf_single_rel_hdr(sec)->sh_name)); |
15bda425 | 406 | if (srel_name == NULL) |
b34976b6 | 407 | return FALSE; |
15bda425 | 408 | |
15bda425 JL |
409 | dynobj = hppa_info->root.dynobj; |
410 | if (!dynobj) | |
411 | hppa_info->root.dynobj = dynobj = abfd; | |
412 | ||
3d4d4302 | 413 | srel = bfd_get_linker_section (dynobj, srel_name); |
15bda425 JL |
414 | if (srel == NULL) |
415 | { | |
3d4d4302 AM |
416 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
417 | (SEC_ALLOC | |
418 | | SEC_LOAD | |
419 | | SEC_HAS_CONTENTS | |
420 | | SEC_IN_MEMORY | |
421 | | SEC_LINKER_CREATED | |
422 | | SEC_READONLY)); | |
15bda425 | 423 | if (srel == NULL |
fd361982 | 424 | || !bfd_set_section_alignment (srel, 3)) |
b34976b6 | 425 | return FALSE; |
15bda425 JL |
426 | } |
427 | ||
428 | hppa_info->other_rel_sec = srel; | |
b34976b6 | 429 | return TRUE; |
15bda425 JL |
430 | } |
431 | ||
fe8bc63d | 432 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
15bda425 JL |
433 | |
434 | We use this to keep a record of all the FPTR relocations against a | |
435 | particular symbol so that we can create FPTR relocations in the | |
436 | output file. */ | |
437 | ||
b34976b6 | 438 | static bfd_boolean |
813c8a3c | 439 | count_dyn_reloc (bfd *abfd, |
a03bd320 | 440 | struct elf64_hppa_link_hash_entry *hh, |
813c8a3c DA |
441 | int type, |
442 | asection *sec, | |
07d6d2b8 AM |
443 | int sec_symndx, |
444 | bfd_vma offset, | |
813c8a3c | 445 | bfd_vma addend) |
15bda425 JL |
446 | { |
447 | struct elf64_hppa_dyn_reloc_entry *rent; | |
448 | ||
449 | rent = (struct elf64_hppa_dyn_reloc_entry *) | |
dc810e39 | 450 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
15bda425 | 451 | if (!rent) |
b34976b6 | 452 | return FALSE; |
15bda425 | 453 | |
a03bd320 | 454 | rent->next = hh->reloc_entries; |
15bda425 JL |
455 | rent->type = type; |
456 | rent->sec = sec; | |
457 | rent->sec_symndx = sec_symndx; | |
458 | rent->offset = offset; | |
459 | rent->addend = addend; | |
a03bd320 | 460 | hh->reloc_entries = rent; |
15bda425 | 461 | |
b34976b6 | 462 | return TRUE; |
15bda425 JL |
463 | } |
464 | ||
a03bd320 DA |
465 | /* Return a pointer to the local DLT, PLT and OPD reference counts |
466 | for ABFD. Returns NULL if the storage allocation fails. */ | |
467 | ||
468 | static bfd_signed_vma * | |
469 | hppa64_elf_local_refcounts (bfd *abfd) | |
470 | { | |
471 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
472 | bfd_signed_vma *local_refcounts; | |
68ffbac6 | 473 | |
a03bd320 DA |
474 | local_refcounts = elf_local_got_refcounts (abfd); |
475 | if (local_refcounts == NULL) | |
476 | { | |
477 | bfd_size_type size; | |
478 | ||
479 | /* Allocate space for local DLT, PLT and OPD reference | |
480 | counts. Done this way to save polluting elf_obj_tdata | |
481 | with another target specific pointer. */ | |
482 | size = symtab_hdr->sh_info; | |
483 | size *= 3 * sizeof (bfd_signed_vma); | |
484 | local_refcounts = bfd_zalloc (abfd, size); | |
485 | elf_local_got_refcounts (abfd) = local_refcounts; | |
486 | } | |
487 | return local_refcounts; | |
488 | } | |
489 | ||
15bda425 JL |
490 | /* Scan the RELOCS and record the type of dynamic entries that each |
491 | referenced symbol needs. */ | |
492 | ||
b34976b6 | 493 | static bfd_boolean |
813c8a3c DA |
494 | elf64_hppa_check_relocs (bfd *abfd, |
495 | struct bfd_link_info *info, | |
496 | asection *sec, | |
497 | const Elf_Internal_Rela *relocs) | |
15bda425 JL |
498 | { |
499 | struct elf64_hppa_link_hash_table *hppa_info; | |
500 | const Elf_Internal_Rela *relend; | |
501 | Elf_Internal_Shdr *symtab_hdr; | |
502 | const Elf_Internal_Rela *rel; | |
4fbb74a6 | 503 | unsigned int sec_symndx; |
15bda425 | 504 | |
0e1862bb | 505 | if (bfd_link_relocatable (info)) |
b34976b6 | 506 | return TRUE; |
15bda425 JL |
507 | |
508 | /* If this is the first dynamic object found in the link, create | |
509 | the special sections required for dynamic linking. */ | |
510 | if (! elf_hash_table (info)->dynamic_sections_created) | |
511 | { | |
45d6a902 | 512 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
b34976b6 | 513 | return FALSE; |
15bda425 JL |
514 | } |
515 | ||
a03bd320 | 516 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
517 | if (hppa_info == NULL) |
518 | return FALSE; | |
15bda425 JL |
519 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
520 | ||
521 | /* If necessary, build a new table holding section symbols indices | |
6cdc0ccc | 522 | for this BFD. */ |
fe8bc63d | 523 | |
0e1862bb | 524 | if (bfd_link_pic (info) && hppa_info->section_syms_bfd != abfd) |
15bda425 | 525 | { |
832d951b | 526 | unsigned long i; |
9ad5cbcf | 527 | unsigned int highest_shndx; |
6cdc0ccc AM |
528 | Elf_Internal_Sym *local_syms = NULL; |
529 | Elf_Internal_Sym *isym, *isymend; | |
dc810e39 | 530 | bfd_size_type amt; |
15bda425 JL |
531 | |
532 | /* We're done with the old cache of section index to section symbol | |
533 | index information. Free it. | |
534 | ||
535 | ?!? Note we leak the last section_syms array. Presumably we | |
536 | could free it in one of the later routines in this file. */ | |
c9594989 | 537 | free (hppa_info->section_syms); |
15bda425 | 538 | |
6cdc0ccc AM |
539 | /* Read this BFD's local symbols. */ |
540 | if (symtab_hdr->sh_info != 0) | |
47b7c2db | 541 | { |
6cdc0ccc AM |
542 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
543 | if (local_syms == NULL) | |
544 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
545 | symtab_hdr->sh_info, 0, | |
546 | NULL, NULL, NULL); | |
547 | if (local_syms == NULL) | |
b34976b6 | 548 | return FALSE; |
9ad5cbcf AM |
549 | } |
550 | ||
6cdc0ccc | 551 | /* Record the highest section index referenced by the local symbols. */ |
15bda425 | 552 | highest_shndx = 0; |
6cdc0ccc AM |
553 | isymend = local_syms + symtab_hdr->sh_info; |
554 | for (isym = local_syms; isym < isymend; isym++) | |
15bda425 | 555 | { |
4fbb74a6 AM |
556 | if (isym->st_shndx > highest_shndx |
557 | && isym->st_shndx < SHN_LORESERVE) | |
15bda425 JL |
558 | highest_shndx = isym->st_shndx; |
559 | } | |
560 | ||
15bda425 JL |
561 | /* Allocate an array to hold the section index to section symbol index |
562 | mapping. Bump by one since we start counting at zero. */ | |
563 | highest_shndx++; | |
dc810e39 AM |
564 | amt = highest_shndx; |
565 | amt *= sizeof (int); | |
566 | hppa_info->section_syms = (int *) bfd_malloc (amt); | |
15bda425 JL |
567 | |
568 | /* Now walk the local symbols again. If we find a section symbol, | |
569 | record the index of the symbol into the section_syms array. */ | |
6cdc0ccc | 570 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
15bda425 JL |
571 | { |
572 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
573 | hppa_info->section_syms[isym->st_shndx] = i; | |
574 | } | |
575 | ||
6cdc0ccc AM |
576 | /* We are finished with the local symbols. */ |
577 | if (local_syms != NULL | |
578 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
579 | { | |
580 | if (! info->keep_memory) | |
581 | free (local_syms); | |
582 | else | |
583 | { | |
584 | /* Cache the symbols for elf_link_input_bfd. */ | |
585 | symtab_hdr->contents = (unsigned char *) local_syms; | |
586 | } | |
587 | } | |
15bda425 JL |
588 | |
589 | /* Record which BFD we built the section_syms mapping for. */ | |
590 | hppa_info->section_syms_bfd = abfd; | |
591 | } | |
592 | ||
593 | /* Record the symbol index for this input section. We may need it for | |
594 | relocations when building shared libraries. When not building shared | |
595 | libraries this value is never really used, but assign it to zero to | |
596 | prevent out of bounds memory accesses in other routines. */ | |
0e1862bb | 597 | if (bfd_link_pic (info)) |
15bda425 JL |
598 | { |
599 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
600 | ||
601 | /* If we did not find a section symbol for this section, then | |
602 | something went terribly wrong above. */ | |
4fbb74a6 | 603 | if (sec_symndx == SHN_BAD) |
b34976b6 | 604 | return FALSE; |
15bda425 | 605 | |
4fbb74a6 AM |
606 | if (sec_symndx < SHN_LORESERVE) |
607 | sec_symndx = hppa_info->section_syms[sec_symndx]; | |
608 | else | |
609 | sec_symndx = 0; | |
15bda425 JL |
610 | } |
611 | else | |
612 | sec_symndx = 0; | |
fe8bc63d | 613 | |
15bda425 JL |
614 | relend = relocs + sec->reloc_count; |
615 | for (rel = relocs; rel < relend; ++rel) | |
616 | { | |
560e09e9 NC |
617 | enum |
618 | { | |
619 | NEED_DLT = 1, | |
620 | NEED_PLT = 2, | |
621 | NEED_STUB = 4, | |
622 | NEED_OPD = 8, | |
623 | NEED_DYNREL = 16, | |
624 | }; | |
15bda425 | 625 | |
15bda425 | 626 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); |
a03bd320 | 627 | struct elf64_hppa_link_hash_entry *hh; |
15bda425 | 628 | int need_entry; |
b34976b6 | 629 | bfd_boolean maybe_dynamic; |
15bda425 JL |
630 | int dynrel_type = R_PARISC_NONE; |
631 | static reloc_howto_type *howto; | |
632 | ||
633 | if (r_symndx >= symtab_hdr->sh_info) | |
634 | { | |
635 | /* We're dealing with a global symbol -- find its hash entry | |
636 | and mark it as being referenced. */ | |
637 | long indx = r_symndx - symtab_hdr->sh_info; | |
a03bd320 DA |
638 | hh = hppa_elf_hash_entry (elf_sym_hashes (abfd)[indx]); |
639 | while (hh->eh.root.type == bfd_link_hash_indirect | |
640 | || hh->eh.root.type == bfd_link_hash_warning) | |
641 | hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); | |
15bda425 | 642 | |
81fbe831 AM |
643 | /* PR15323, ref flags aren't set for references in the same |
644 | object. */ | |
a03bd320 | 645 | hh->eh.ref_regular = 1; |
15bda425 | 646 | } |
a03bd320 DA |
647 | else |
648 | hh = NULL; | |
15bda425 JL |
649 | |
650 | /* We can only get preliminary data on whether a symbol is | |
651 | locally or externally defined, as not all of the input files | |
652 | have yet been processed. Do something with what we know, as | |
653 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 654 | maybe_dynamic = FALSE; |
0e1862bb | 655 | if (hh && ((bfd_link_pic (info) |
f5385ebf AM |
656 | && (!info->symbolic |
657 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
a03bd320 DA |
658 | || !hh->eh.def_regular |
659 | || hh->eh.root.type == bfd_link_hash_defweak)) | |
b34976b6 | 660 | maybe_dynamic = TRUE; |
15bda425 JL |
661 | |
662 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); | |
663 | need_entry = 0; | |
664 | switch (howto->type) | |
665 | { | |
666 | /* These are simple indirect references to symbols through the | |
667 | DLT. We need to create a DLT entry for any symbols which | |
668 | appears in a DLTIND relocation. */ | |
669 | case R_PARISC_DLTIND21L: | |
670 | case R_PARISC_DLTIND14R: | |
671 | case R_PARISC_DLTIND14F: | |
672 | case R_PARISC_DLTIND14WR: | |
673 | case R_PARISC_DLTIND14DR: | |
674 | need_entry = NEED_DLT; | |
675 | break; | |
676 | ||
677 | /* ?!? These need a DLT entry. But I have no idea what to do with | |
678 | the "link time TP value. */ | |
679 | case R_PARISC_LTOFF_TP21L: | |
680 | case R_PARISC_LTOFF_TP14R: | |
681 | case R_PARISC_LTOFF_TP14F: | |
682 | case R_PARISC_LTOFF_TP64: | |
683 | case R_PARISC_LTOFF_TP14WR: | |
684 | case R_PARISC_LTOFF_TP14DR: | |
685 | case R_PARISC_LTOFF_TP16F: | |
686 | case R_PARISC_LTOFF_TP16WF: | |
687 | case R_PARISC_LTOFF_TP16DF: | |
688 | need_entry = NEED_DLT; | |
689 | break; | |
690 | ||
691 | /* These are function calls. Depending on their precise target we | |
692 | may need to make a stub for them. The stub uses the PLT, so we | |
693 | need to create PLT entries for these symbols too. */ | |
832d951b | 694 | case R_PARISC_PCREL12F: |
15bda425 JL |
695 | case R_PARISC_PCREL17F: |
696 | case R_PARISC_PCREL22F: | |
697 | case R_PARISC_PCREL32: | |
698 | case R_PARISC_PCREL64: | |
699 | case R_PARISC_PCREL21L: | |
700 | case R_PARISC_PCREL17R: | |
701 | case R_PARISC_PCREL17C: | |
702 | case R_PARISC_PCREL14R: | |
703 | case R_PARISC_PCREL14F: | |
704 | case R_PARISC_PCREL22C: | |
705 | case R_PARISC_PCREL14WR: | |
706 | case R_PARISC_PCREL14DR: | |
707 | case R_PARISC_PCREL16F: | |
708 | case R_PARISC_PCREL16WF: | |
709 | case R_PARISC_PCREL16DF: | |
a03bd320 DA |
710 | /* Function calls might need to go through the .plt, and |
711 | might need a long branch stub. */ | |
712 | if (hh != NULL && hh->eh.type != STT_PARISC_MILLI) | |
713 | need_entry = (NEED_PLT | NEED_STUB); | |
714 | else | |
715 | need_entry = 0; | |
15bda425 JL |
716 | break; |
717 | ||
718 | case R_PARISC_PLTOFF21L: | |
719 | case R_PARISC_PLTOFF14R: | |
720 | case R_PARISC_PLTOFF14F: | |
721 | case R_PARISC_PLTOFF14WR: | |
722 | case R_PARISC_PLTOFF14DR: | |
723 | case R_PARISC_PLTOFF16F: | |
724 | case R_PARISC_PLTOFF16WF: | |
725 | case R_PARISC_PLTOFF16DF: | |
726 | need_entry = (NEED_PLT); | |
727 | break; | |
728 | ||
729 | case R_PARISC_DIR64: | |
0e1862bb | 730 | if (bfd_link_pic (info) || maybe_dynamic) |
15bda425 JL |
731 | need_entry = (NEED_DYNREL); |
732 | dynrel_type = R_PARISC_DIR64; | |
733 | break; | |
734 | ||
735 | /* This is an indirect reference through the DLT to get the address | |
736 | of a OPD descriptor. Thus we need to make a DLT entry that points | |
737 | to an OPD entry. */ | |
738 | case R_PARISC_LTOFF_FPTR21L: | |
739 | case R_PARISC_LTOFF_FPTR14R: | |
740 | case R_PARISC_LTOFF_FPTR14WR: | |
741 | case R_PARISC_LTOFF_FPTR14DR: | |
742 | case R_PARISC_LTOFF_FPTR32: | |
743 | case R_PARISC_LTOFF_FPTR64: | |
744 | case R_PARISC_LTOFF_FPTR16F: | |
745 | case R_PARISC_LTOFF_FPTR16WF: | |
746 | case R_PARISC_LTOFF_FPTR16DF: | |
0e1862bb | 747 | if (bfd_link_pic (info) || maybe_dynamic) |
a03bd320 | 748 | need_entry = (NEED_DLT | NEED_OPD | NEED_PLT); |
15bda425 | 749 | else |
a03bd320 | 750 | need_entry = (NEED_DLT | NEED_OPD | NEED_PLT); |
15bda425 JL |
751 | dynrel_type = R_PARISC_FPTR64; |
752 | break; | |
753 | ||
754 | /* This is a simple OPD entry. */ | |
755 | case R_PARISC_FPTR64: | |
0e1862bb | 756 | if (bfd_link_pic (info) || maybe_dynamic) |
a03bd320 | 757 | need_entry = (NEED_OPD | NEED_PLT | NEED_DYNREL); |
15bda425 | 758 | else |
a03bd320 | 759 | need_entry = (NEED_OPD | NEED_PLT); |
15bda425 JL |
760 | dynrel_type = R_PARISC_FPTR64; |
761 | break; | |
762 | ||
763 | /* Add more cases as needed. */ | |
764 | } | |
765 | ||
766 | if (!need_entry) | |
767 | continue; | |
768 | ||
a03bd320 DA |
769 | if (hh) |
770 | { | |
771 | /* Stash away enough information to be able to find this symbol | |
772 | regardless of whether or not it is local or global. */ | |
773 | hh->owner = abfd; | |
774 | hh->sym_indx = r_symndx; | |
775 | } | |
15bda425 | 776 | |
15bda425 JL |
777 | /* Create what's needed. */ |
778 | if (need_entry & NEED_DLT) | |
779 | { | |
a03bd320 DA |
780 | /* Allocate space for a DLT entry, as well as a dynamic |
781 | relocation for this entry. */ | |
15bda425 JL |
782 | if (! hppa_info->dlt_sec |
783 | && ! get_dlt (abfd, info, hppa_info)) | |
784 | goto err_out; | |
a03bd320 DA |
785 | |
786 | if (hh != NULL) | |
787 | { | |
788 | hh->want_dlt = 1; | |
789 | hh->eh.got.refcount += 1; | |
790 | } | |
791 | else | |
792 | { | |
793 | bfd_signed_vma *local_dlt_refcounts; | |
68ffbac6 | 794 | |
a03bd320 DA |
795 | /* This is a DLT entry for a local symbol. */ |
796 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); | |
797 | if (local_dlt_refcounts == NULL) | |
798 | return FALSE; | |
799 | local_dlt_refcounts[r_symndx] += 1; | |
800 | } | |
15bda425 JL |
801 | } |
802 | ||
803 | if (need_entry & NEED_PLT) | |
804 | { | |
9b8a8575 | 805 | if (! hppa_info->root.splt |
15bda425 JL |
806 | && ! get_plt (abfd, info, hppa_info)) |
807 | goto err_out; | |
a03bd320 DA |
808 | |
809 | if (hh != NULL) | |
810 | { | |
811 | hh->want_plt = 1; | |
812 | hh->eh.needs_plt = 1; | |
813 | hh->eh.plt.refcount += 1; | |
814 | } | |
815 | else | |
816 | { | |
817 | bfd_signed_vma *local_dlt_refcounts; | |
818 | bfd_signed_vma *local_plt_refcounts; | |
68ffbac6 | 819 | |
a03bd320 DA |
820 | /* This is a PLT entry for a local symbol. */ |
821 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); | |
822 | if (local_dlt_refcounts == NULL) | |
823 | return FALSE; | |
824 | local_plt_refcounts = local_dlt_refcounts + symtab_hdr->sh_info; | |
825 | local_plt_refcounts[r_symndx] += 1; | |
826 | } | |
15bda425 JL |
827 | } |
828 | ||
829 | if (need_entry & NEED_STUB) | |
830 | { | |
831 | if (! hppa_info->stub_sec | |
832 | && ! get_stub (abfd, info, hppa_info)) | |
833 | goto err_out; | |
a03bd320 DA |
834 | if (hh) |
835 | hh->want_stub = 1; | |
15bda425 JL |
836 | } |
837 | ||
838 | if (need_entry & NEED_OPD) | |
839 | { | |
840 | if (! hppa_info->opd_sec | |
841 | && ! get_opd (abfd, info, hppa_info)) | |
842 | goto err_out; | |
843 | ||
a03bd320 DA |
844 | /* FPTRs are not allocated by the dynamic linker for PA64, |
845 | though it is possible that will change in the future. */ | |
fe8bc63d | 846 | |
a03bd320 DA |
847 | if (hh != NULL) |
848 | hh->want_opd = 1; | |
849 | else | |
850 | { | |
851 | bfd_signed_vma *local_dlt_refcounts; | |
852 | bfd_signed_vma *local_opd_refcounts; | |
68ffbac6 | 853 | |
a03bd320 DA |
854 | /* This is a OPD for a local symbol. */ |
855 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); | |
856 | if (local_dlt_refcounts == NULL) | |
857 | return FALSE; | |
858 | local_opd_refcounts = (local_dlt_refcounts | |
859 | + 2 * symtab_hdr->sh_info); | |
860 | local_opd_refcounts[r_symndx] += 1; | |
861 | } | |
15bda425 JL |
862 | } |
863 | ||
864 | /* Add a new dynamic relocation to the chain of dynamic | |
865 | relocations for this symbol. */ | |
866 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
867 | { | |
868 | if (! hppa_info->other_rel_sec | |
869 | && ! get_reloc_section (abfd, hppa_info, sec)) | |
870 | goto err_out; | |
871 | ||
a03bd320 DA |
872 | /* Count dynamic relocations against global symbols. */ |
873 | if (hh != NULL | |
874 | && !count_dyn_reloc (abfd, hh, dynrel_type, sec, | |
875 | sec_symndx, rel->r_offset, rel->r_addend)) | |
15bda425 JL |
876 | goto err_out; |
877 | ||
878 | /* If we are building a shared library and we just recorded | |
879 | a dynamic R_PARISC_FPTR64 relocation, then make sure the | |
880 | section symbol for this section ends up in the dynamic | |
881 | symbol table. */ | |
0e1862bb | 882 | if (bfd_link_pic (info) && dynrel_type == R_PARISC_FPTR64 |
c152c796 | 883 | && ! (bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 884 | (info, abfd, sec_symndx))) |
b34976b6 | 885 | return FALSE; |
15bda425 JL |
886 | } |
887 | } | |
888 | ||
b34976b6 | 889 | return TRUE; |
15bda425 JL |
890 | |
891 | err_out: | |
b34976b6 | 892 | return FALSE; |
15bda425 JL |
893 | } |
894 | ||
895 | struct elf64_hppa_allocate_data | |
896 | { | |
897 | struct bfd_link_info *info; | |
898 | bfd_size_type ofs; | |
899 | }; | |
900 | ||
901 | /* Should we do dynamic things to this symbol? */ | |
902 | ||
b34976b6 | 903 | static bfd_boolean |
a03bd320 | 904 | elf64_hppa_dynamic_symbol_p (struct elf_link_hash_entry *eh, |
813c8a3c | 905 | struct bfd_link_info *info) |
15bda425 | 906 | { |
986a241f RH |
907 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
908 | and relocations that retrieve a function descriptor? Assume the | |
909 | worst for now. */ | |
a03bd320 | 910 | if (_bfd_elf_dynamic_symbol_p (eh, info, 1)) |
986a241f RH |
911 | { |
912 | /* ??? Why is this here and not elsewhere is_local_label_name. */ | |
a03bd320 | 913 | if (eh->root.root.string[0] == '$' && eh->root.root.string[1] == '$') |
986a241f | 914 | return FALSE; |
15bda425 | 915 | |
986a241f RH |
916 | return TRUE; |
917 | } | |
918 | else | |
b34976b6 | 919 | return FALSE; |
15bda425 JL |
920 | } |
921 | ||
4cc11e76 | 922 | /* Mark all functions exported by this file so that we can later allocate |
15bda425 JL |
923 | entries in .opd for them. */ |
924 | ||
b34976b6 | 925 | static bfd_boolean |
a03bd320 | 926 | elf64_hppa_mark_exported_functions (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 927 | { |
a03bd320 | 928 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
929 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
930 | struct elf64_hppa_link_hash_table *hppa_info; | |
931 | ||
a03bd320 | 932 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
933 | if (hppa_info == NULL) |
934 | return FALSE; | |
15bda425 | 935 | |
a03bd320 DA |
936 | if (eh |
937 | && (eh->root.type == bfd_link_hash_defined | |
938 | || eh->root.type == bfd_link_hash_defweak) | |
939 | && eh->root.u.def.section->output_section != NULL | |
940 | && eh->type == STT_FUNC) | |
15bda425 | 941 | { |
15bda425 JL |
942 | if (! hppa_info->opd_sec |
943 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) | |
b34976b6 | 944 | return FALSE; |
15bda425 | 945 | |
a03bd320 DA |
946 | hh->want_opd = 1; |
947 | ||
832d951b | 948 | /* Put a flag here for output_symbol_hook. */ |
a03bd320 DA |
949 | hh->st_shndx = -1; |
950 | eh->needs_plt = 1; | |
15bda425 JL |
951 | } |
952 | ||
b34976b6 | 953 | return TRUE; |
15bda425 JL |
954 | } |
955 | ||
956 | /* Allocate space for a DLT entry. */ | |
957 | ||
b34976b6 | 958 | static bfd_boolean |
a03bd320 | 959 | allocate_global_data_dlt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 960 | { |
a03bd320 | 961 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
962 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
963 | ||
a03bd320 | 964 | if (hh->want_dlt) |
15bda425 | 965 | { |
0e1862bb | 966 | if (bfd_link_pic (x->info)) |
15bda425 JL |
967 | { |
968 | /* Possibly add the symbol to the local dynamic symbol | |
969 | table since we might need to create a dynamic relocation | |
970 | against it. */ | |
a03bd320 | 971 | if (eh->dynindx == -1 && eh->type != STT_PARISC_MILLI) |
15bda425 | 972 | { |
a03bd320 | 973 | bfd *owner = eh->root.u.def.section->owner; |
15bda425 | 974 | |
c152c796 | 975 | if (! (bfd_elf_link_record_local_dynamic_symbol |
a03bd320 | 976 | (x->info, owner, hh->sym_indx))) |
b34976b6 | 977 | return FALSE; |
15bda425 JL |
978 | } |
979 | } | |
980 | ||
a03bd320 | 981 | hh->dlt_offset = x->ofs; |
15bda425 JL |
982 | x->ofs += DLT_ENTRY_SIZE; |
983 | } | |
b34976b6 | 984 | return TRUE; |
15bda425 JL |
985 | } |
986 | ||
987 | /* Allocate space for a DLT.PLT entry. */ | |
988 | ||
b34976b6 | 989 | static bfd_boolean |
a03bd320 | 990 | allocate_global_data_plt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 991 | { |
a03bd320 | 992 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
4dfe6ac6 | 993 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *) data; |
15bda425 | 994 | |
a03bd320 DA |
995 | if (hh->want_plt |
996 | && elf64_hppa_dynamic_symbol_p (eh, x->info) | |
997 | && !((eh->root.type == bfd_link_hash_defined | |
998 | || eh->root.type == bfd_link_hash_defweak) | |
999 | && eh->root.u.def.section->output_section != NULL)) | |
15bda425 | 1000 | { |
a03bd320 | 1001 | hh->plt_offset = x->ofs; |
15bda425 | 1002 | x->ofs += PLT_ENTRY_SIZE; |
a03bd320 | 1003 | if (hh->plt_offset < 0x2000) |
4dfe6ac6 NC |
1004 | { |
1005 | struct elf64_hppa_link_hash_table *hppa_info; | |
1006 | ||
1007 | hppa_info = hppa_link_hash_table (x->info); | |
1008 | if (hppa_info == NULL) | |
1009 | return FALSE; | |
1010 | ||
1011 | hppa_info->gp_offset = hh->plt_offset; | |
1012 | } | |
15bda425 JL |
1013 | } |
1014 | else | |
a03bd320 | 1015 | hh->want_plt = 0; |
15bda425 | 1016 | |
b34976b6 | 1017 | return TRUE; |
15bda425 JL |
1018 | } |
1019 | ||
1020 | /* Allocate space for a STUB entry. */ | |
1021 | ||
b34976b6 | 1022 | static bfd_boolean |
a03bd320 | 1023 | allocate_global_data_stub (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1024 | { |
a03bd320 | 1025 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1026 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
1027 | ||
a03bd320 DA |
1028 | if (hh->want_stub |
1029 | && elf64_hppa_dynamic_symbol_p (eh, x->info) | |
1030 | && !((eh->root.type == bfd_link_hash_defined | |
1031 | || eh->root.type == bfd_link_hash_defweak) | |
1032 | && eh->root.u.def.section->output_section != NULL)) | |
15bda425 | 1033 | { |
a03bd320 | 1034 | hh->stub_offset = x->ofs; |
15bda425 JL |
1035 | x->ofs += sizeof (plt_stub); |
1036 | } | |
1037 | else | |
a03bd320 | 1038 | hh->want_stub = 0; |
b34976b6 | 1039 | return TRUE; |
15bda425 JL |
1040 | } |
1041 | ||
1042 | /* Allocate space for a FPTR entry. */ | |
1043 | ||
b34976b6 | 1044 | static bfd_boolean |
a03bd320 | 1045 | allocate_global_data_opd (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1046 | { |
a03bd320 | 1047 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1048 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
1049 | ||
a03bd320 | 1050 | if (hh && hh->want_opd) |
15bda425 | 1051 | { |
15bda425 JL |
1052 | /* We never need an opd entry for a symbol which is not |
1053 | defined by this output file. */ | |
a03bd320 DA |
1054 | if (hh && (hh->eh.root.type == bfd_link_hash_undefined |
1055 | || hh->eh.root.type == bfd_link_hash_undefweak | |
1056 | || hh->eh.root.u.def.section->output_section == NULL)) | |
1057 | hh->want_opd = 0; | |
15bda425 JL |
1058 | |
1059 | /* If we are creating a shared library, took the address of a local | |
1060 | function or might export this function from this object file, then | |
1061 | we have to create an opd descriptor. */ | |
0e1862bb | 1062 | else if (bfd_link_pic (x->info) |
a03bd320 DA |
1063 | || hh == NULL |
1064 | || (hh->eh.dynindx == -1 && hh->eh.type != STT_PARISC_MILLI) | |
1065 | || (hh->eh.root.type == bfd_link_hash_defined | |
1066 | || hh->eh.root.type == bfd_link_hash_defweak)) | |
15bda425 JL |
1067 | { |
1068 | /* If we are creating a shared library, then we will have to | |
1069 | create a runtime relocation for the symbol to properly | |
1070 | initialize the .opd entry. Make sure the symbol gets | |
1071 | added to the dynamic symbol table. */ | |
0e1862bb | 1072 | if (bfd_link_pic (x->info) |
a03bd320 | 1073 | && (hh == NULL || (hh->eh.dynindx == -1))) |
15bda425 JL |
1074 | { |
1075 | bfd *owner; | |
adfef0bd | 1076 | /* PR 6511: Default to using the dynamic symbol table. */ |
a03bd320 | 1077 | owner = (hh->owner ? hh->owner: eh->root.u.def.section->owner); |
15bda425 | 1078 | |
c152c796 | 1079 | if (!bfd_elf_link_record_local_dynamic_symbol |
a03bd320 | 1080 | (x->info, owner, hh->sym_indx)) |
b34976b6 | 1081 | return FALSE; |
15bda425 JL |
1082 | } |
1083 | ||
1084 | /* This may not be necessary or desirable anymore now that | |
1085 | we have some support for dealing with section symbols | |
1086 | in dynamic relocs. But name munging does make the result | |
1087 | much easier to debug. ie, the EPLT reloc will reference | |
1088 | a symbol like .foobar, instead of .text + offset. */ | |
0e1862bb | 1089 | if (bfd_link_pic (x->info) && eh) |
15bda425 JL |
1090 | { |
1091 | char *new_name; | |
1092 | struct elf_link_hash_entry *nh; | |
1093 | ||
e1fa0163 | 1094 | new_name = concat (".", eh->root.root.string, NULL); |
15bda425 JL |
1095 | |
1096 | nh = elf_link_hash_lookup (elf_hash_table (x->info), | |
b34976b6 | 1097 | new_name, TRUE, TRUE, TRUE); |
15bda425 | 1098 | |
e1fa0163 | 1099 | free (new_name); |
a03bd320 DA |
1100 | nh->root.type = eh->root.type; |
1101 | nh->root.u.def.value = eh->root.u.def.value; | |
1102 | nh->root.u.def.section = eh->root.u.def.section; | |
15bda425 | 1103 | |
c152c796 | 1104 | if (! bfd_elf_link_record_dynamic_symbol (x->info, nh)) |
b34976b6 | 1105 | return FALSE; |
15bda425 | 1106 | } |
a03bd320 | 1107 | hh->opd_offset = x->ofs; |
15bda425 JL |
1108 | x->ofs += OPD_ENTRY_SIZE; |
1109 | } | |
1110 | ||
1111 | /* Otherwise we do not need an opd entry. */ | |
1112 | else | |
a03bd320 | 1113 | hh->want_opd = 0; |
15bda425 | 1114 | } |
b34976b6 | 1115 | return TRUE; |
15bda425 JL |
1116 | } |
1117 | ||
1118 | /* HP requires the EI_OSABI field to be filled in. The assignment to | |
1119 | EI_ABIVERSION may not be strictly necessary. */ | |
1120 | ||
ed7e9d0b AM |
1121 | static bfd_boolean |
1122 | elf64_hppa_init_file_header (bfd *abfd, struct bfd_link_info *info) | |
15bda425 | 1123 | { |
ed7e9d0b | 1124 | Elf_Internal_Ehdr *i_ehdrp; |
15bda425 | 1125 | |
ed7e9d0b AM |
1126 | if (!_bfd_elf_init_file_header (abfd, info)) |
1127 | return FALSE; | |
68ffbac6 | 1128 | |
ed7e9d0b | 1129 | i_ehdrp = elf_elfheader (abfd); |
d1036acb L |
1130 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
1131 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
ed7e9d0b | 1132 | return TRUE; |
15bda425 JL |
1133 | } |
1134 | ||
1135 | /* Create function descriptor section (.opd). This section is called .opd | |
4cc11e76 | 1136 | because it contains "official procedure descriptors". The "official" |
15bda425 JL |
1137 | refers to the fact that these descriptors are used when taking the address |
1138 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1139 | ||
b34976b6 | 1140 | static bfd_boolean |
813c8a3c DA |
1141 | get_opd (bfd *abfd, |
1142 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1143 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1144 | { |
1145 | asection *opd; | |
1146 | bfd *dynobj; | |
1147 | ||
1148 | opd = hppa_info->opd_sec; | |
1149 | if (!opd) | |
1150 | { | |
1151 | dynobj = hppa_info->root.dynobj; | |
1152 | if (!dynobj) | |
1153 | hppa_info->root.dynobj = dynobj = abfd; | |
1154 | ||
3d4d4302 AM |
1155 | opd = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
1156 | (SEC_ALLOC | |
1157 | | SEC_LOAD | |
1158 | | SEC_HAS_CONTENTS | |
1159 | | SEC_IN_MEMORY | |
1160 | | SEC_LINKER_CREATED)); | |
15bda425 | 1161 | if (!opd |
fd361982 | 1162 | || !bfd_set_section_alignment (opd, 3)) |
15bda425 JL |
1163 | { |
1164 | BFD_ASSERT (0); | |
b34976b6 | 1165 | return FALSE; |
15bda425 JL |
1166 | } |
1167 | ||
1168 | hppa_info->opd_sec = opd; | |
1169 | } | |
1170 | ||
b34976b6 | 1171 | return TRUE; |
15bda425 JL |
1172 | } |
1173 | ||
1174 | /* Create the PLT section. */ | |
1175 | ||
b34976b6 | 1176 | static bfd_boolean |
813c8a3c DA |
1177 | get_plt (bfd *abfd, |
1178 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1179 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1180 | { |
1181 | asection *plt; | |
1182 | bfd *dynobj; | |
1183 | ||
9b8a8575 | 1184 | plt = hppa_info->root.splt; |
15bda425 JL |
1185 | if (!plt) |
1186 | { | |
1187 | dynobj = hppa_info->root.dynobj; | |
1188 | if (!dynobj) | |
1189 | hppa_info->root.dynobj = dynobj = abfd; | |
1190 | ||
3d4d4302 AM |
1191 | plt = bfd_make_section_anyway_with_flags (dynobj, ".plt", |
1192 | (SEC_ALLOC | |
1193 | | SEC_LOAD | |
1194 | | SEC_HAS_CONTENTS | |
1195 | | SEC_IN_MEMORY | |
1196 | | SEC_LINKER_CREATED)); | |
15bda425 | 1197 | if (!plt |
fd361982 | 1198 | || !bfd_set_section_alignment (plt, 3)) |
15bda425 JL |
1199 | { |
1200 | BFD_ASSERT (0); | |
b34976b6 | 1201 | return FALSE; |
15bda425 JL |
1202 | } |
1203 | ||
9b8a8575 | 1204 | hppa_info->root.splt = plt; |
15bda425 JL |
1205 | } |
1206 | ||
b34976b6 | 1207 | return TRUE; |
15bda425 JL |
1208 | } |
1209 | ||
1210 | /* Create the DLT section. */ | |
1211 | ||
b34976b6 | 1212 | static bfd_boolean |
813c8a3c DA |
1213 | get_dlt (bfd *abfd, |
1214 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1215 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1216 | { |
1217 | asection *dlt; | |
1218 | bfd *dynobj; | |
1219 | ||
1220 | dlt = hppa_info->dlt_sec; | |
1221 | if (!dlt) | |
1222 | { | |
1223 | dynobj = hppa_info->root.dynobj; | |
1224 | if (!dynobj) | |
1225 | hppa_info->root.dynobj = dynobj = abfd; | |
1226 | ||
3d4d4302 AM |
1227 | dlt = bfd_make_section_anyway_with_flags (dynobj, ".dlt", |
1228 | (SEC_ALLOC | |
1229 | | SEC_LOAD | |
1230 | | SEC_HAS_CONTENTS | |
1231 | | SEC_IN_MEMORY | |
1232 | | SEC_LINKER_CREATED)); | |
15bda425 | 1233 | if (!dlt |
fd361982 | 1234 | || !bfd_set_section_alignment (dlt, 3)) |
15bda425 JL |
1235 | { |
1236 | BFD_ASSERT (0); | |
b34976b6 | 1237 | return FALSE; |
15bda425 JL |
1238 | } |
1239 | ||
1240 | hppa_info->dlt_sec = dlt; | |
1241 | } | |
1242 | ||
b34976b6 | 1243 | return TRUE; |
15bda425 JL |
1244 | } |
1245 | ||
1246 | /* Create the stubs section. */ | |
1247 | ||
b34976b6 | 1248 | static bfd_boolean |
813c8a3c DA |
1249 | get_stub (bfd *abfd, |
1250 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1251 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1252 | { |
1253 | asection *stub; | |
1254 | bfd *dynobj; | |
1255 | ||
1256 | stub = hppa_info->stub_sec; | |
1257 | if (!stub) | |
1258 | { | |
1259 | dynobj = hppa_info->root.dynobj; | |
1260 | if (!dynobj) | |
1261 | hppa_info->root.dynobj = dynobj = abfd; | |
1262 | ||
3d4d4302 AM |
1263 | stub = bfd_make_section_anyway_with_flags (dynobj, ".stub", |
1264 | (SEC_ALLOC | SEC_LOAD | |
1265 | | SEC_HAS_CONTENTS | |
1266 | | SEC_IN_MEMORY | |
1267 | | SEC_READONLY | |
1268 | | SEC_LINKER_CREATED)); | |
15bda425 | 1269 | if (!stub |
fd361982 | 1270 | || !bfd_set_section_alignment (stub, 3)) |
15bda425 JL |
1271 | { |
1272 | BFD_ASSERT (0); | |
b34976b6 | 1273 | return FALSE; |
15bda425 JL |
1274 | } |
1275 | ||
1276 | hppa_info->stub_sec = stub; | |
1277 | } | |
1278 | ||
b34976b6 | 1279 | return TRUE; |
15bda425 JL |
1280 | } |
1281 | ||
1282 | /* Create sections necessary for dynamic linking. This is only a rough | |
1283 | cut and will likely change as we learn more about the somewhat | |
1284 | unusual dynamic linking scheme HP uses. | |
1285 | ||
1286 | .stub: | |
1287 | Contains code to implement cross-space calls. The first time one | |
1288 | of the stubs is used it will call into the dynamic linker, later | |
1289 | calls will go straight to the target. | |
1290 | ||
1291 | The only stub we support right now looks like | |
1292 | ||
1293 | ldd OFFSET(%dp),%r1 | |
1294 | bve %r0(%r1) | |
1295 | ldd OFFSET+8(%dp),%dp | |
1296 | ||
1297 | Other stubs may be needed in the future. We may want the remove | |
1298 | the break/nop instruction. It is only used right now to keep the | |
1299 | offset of a .plt entry and a .stub entry in sync. | |
1300 | ||
1301 | .dlt: | |
1302 | This is what most people call the .got. HP used a different name. | |
1303 | Losers. | |
1304 | ||
1305 | .rela.dlt: | |
1306 | Relocations for the DLT. | |
1307 | ||
1308 | .plt: | |
1309 | Function pointers as address,gp pairs. | |
1310 | ||
1311 | .rela.plt: | |
1312 | Should contain dynamic IPLT (and EPLT?) relocations. | |
1313 | ||
1314 | .opd: | |
fe8bc63d | 1315 | FPTRS |
15bda425 JL |
1316 | |
1317 | .rela.opd: | |
1318 | EPLT relocations for symbols exported from shared libraries. */ | |
1319 | ||
b34976b6 | 1320 | static bfd_boolean |
813c8a3c DA |
1321 | elf64_hppa_create_dynamic_sections (bfd *abfd, |
1322 | struct bfd_link_info *info) | |
15bda425 JL |
1323 | { |
1324 | asection *s; | |
4dfe6ac6 NC |
1325 | struct elf64_hppa_link_hash_table *hppa_info; |
1326 | ||
1327 | hppa_info = hppa_link_hash_table (info); | |
1328 | if (hppa_info == NULL) | |
1329 | return FALSE; | |
15bda425 | 1330 | |
4dfe6ac6 | 1331 | if (! get_stub (abfd, info, hppa_info)) |
b34976b6 | 1332 | return FALSE; |
15bda425 | 1333 | |
4dfe6ac6 | 1334 | if (! get_dlt (abfd, info, hppa_info)) |
b34976b6 | 1335 | return FALSE; |
15bda425 | 1336 | |
4dfe6ac6 | 1337 | if (! get_plt (abfd, info, hppa_info)) |
b34976b6 | 1338 | return FALSE; |
15bda425 | 1339 | |
4dfe6ac6 | 1340 | if (! get_opd (abfd, info, hppa_info)) |
b34976b6 | 1341 | return FALSE; |
15bda425 | 1342 | |
3d4d4302 AM |
1343 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.dlt", |
1344 | (SEC_ALLOC | SEC_LOAD | |
1345 | | SEC_HAS_CONTENTS | |
1346 | | SEC_IN_MEMORY | |
1347 | | SEC_READONLY | |
1348 | | SEC_LINKER_CREATED)); | |
15bda425 | 1349 | if (s == NULL |
fd361982 | 1350 | || !bfd_set_section_alignment (s, 3)) |
b34976b6 | 1351 | return FALSE; |
4dfe6ac6 | 1352 | hppa_info->dlt_rel_sec = s; |
15bda425 | 1353 | |
3d4d4302 AM |
1354 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", |
1355 | (SEC_ALLOC | SEC_LOAD | |
1356 | | SEC_HAS_CONTENTS | |
1357 | | SEC_IN_MEMORY | |
1358 | | SEC_READONLY | |
1359 | | SEC_LINKER_CREATED)); | |
15bda425 | 1360 | if (s == NULL |
fd361982 | 1361 | || !bfd_set_section_alignment (s, 3)) |
b34976b6 | 1362 | return FALSE; |
9b8a8575 | 1363 | hppa_info->root.srelplt = s; |
15bda425 | 1364 | |
3d4d4302 AM |
1365 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.data", |
1366 | (SEC_ALLOC | SEC_LOAD | |
1367 | | SEC_HAS_CONTENTS | |
1368 | | SEC_IN_MEMORY | |
1369 | | SEC_READONLY | |
1370 | | SEC_LINKER_CREATED)); | |
15bda425 | 1371 | if (s == NULL |
fd361982 | 1372 | || !bfd_set_section_alignment (s, 3)) |
b34976b6 | 1373 | return FALSE; |
4dfe6ac6 | 1374 | hppa_info->other_rel_sec = s; |
15bda425 | 1375 | |
3d4d4302 AM |
1376 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.opd", |
1377 | (SEC_ALLOC | SEC_LOAD | |
1378 | | SEC_HAS_CONTENTS | |
1379 | | SEC_IN_MEMORY | |
1380 | | SEC_READONLY | |
1381 | | SEC_LINKER_CREATED)); | |
15bda425 | 1382 | if (s == NULL |
fd361982 | 1383 | || !bfd_set_section_alignment (s, 3)) |
b34976b6 | 1384 | return FALSE; |
4dfe6ac6 | 1385 | hppa_info->opd_rel_sec = s; |
15bda425 | 1386 | |
b34976b6 | 1387 | return TRUE; |
15bda425 JL |
1388 | } |
1389 | ||
1390 | /* Allocate dynamic relocations for those symbols that turned out | |
1391 | to be dynamic. */ | |
1392 | ||
b34976b6 | 1393 | static bfd_boolean |
a03bd320 | 1394 | allocate_dynrel_entries (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1395 | { |
a03bd320 | 1396 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1397 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
1398 | struct elf64_hppa_link_hash_table *hppa_info; | |
1399 | struct elf64_hppa_dyn_reloc_entry *rent; | |
b34976b6 | 1400 | bfd_boolean dynamic_symbol, shared; |
15bda425 | 1401 | |
a03bd320 | 1402 | hppa_info = hppa_link_hash_table (x->info); |
4dfe6ac6 NC |
1403 | if (hppa_info == NULL) |
1404 | return FALSE; | |
1405 | ||
a03bd320 | 1406 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, x->info); |
0e1862bb | 1407 | shared = bfd_link_pic (x->info); |
15bda425 JL |
1408 | |
1409 | /* We may need to allocate relocations for a non-dynamic symbol | |
1410 | when creating a shared library. */ | |
1411 | if (!dynamic_symbol && !shared) | |
b34976b6 | 1412 | return TRUE; |
15bda425 JL |
1413 | |
1414 | /* Take care of the normal data relocations. */ | |
1415 | ||
a03bd320 | 1416 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
15bda425 | 1417 | { |
d663e1cd JL |
1418 | /* Allocate one iff we are building a shared library, the relocation |
1419 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
a03bd320 | 1420 | if (!shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
d663e1cd JL |
1421 | continue; |
1422 | ||
eea6121a | 1423 | hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1424 | |
1425 | /* Make sure this symbol gets into the dynamic symbol table if it is | |
1426 | not already recorded. ?!? This should not be in the loop since | |
1427 | the symbol need only be added once. */ | |
a03bd320 | 1428 | if (eh->dynindx == -1 && eh->type != STT_PARISC_MILLI) |
c152c796 | 1429 | if (!bfd_elf_link_record_local_dynamic_symbol |
a03bd320 | 1430 | (x->info, rent->sec->owner, hh->sym_indx)) |
b34976b6 | 1431 | return FALSE; |
15bda425 JL |
1432 | } |
1433 | ||
1434 | /* Take care of the GOT and PLT relocations. */ | |
1435 | ||
a03bd320 | 1436 | if ((dynamic_symbol || shared) && hh->want_dlt) |
eea6121a | 1437 | hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1438 | |
1439 | /* If we are building a shared library, then every symbol that has an | |
1440 | opd entry will need an EPLT relocation to relocate the symbol's address | |
1441 | and __gp value based on the runtime load address. */ | |
a03bd320 | 1442 | if (shared && hh->want_opd) |
eea6121a | 1443 | hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 | 1444 | |
a03bd320 | 1445 | if (hh->want_plt && dynamic_symbol) |
15bda425 JL |
1446 | { |
1447 | bfd_size_type t = 0; | |
1448 | ||
1449 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
1450 | shared libraries get two REL relocations. Local symbols in | |
1451 | main applications get nothing. */ | |
1452 | if (dynamic_symbol) | |
1453 | t = sizeof (Elf64_External_Rela); | |
1454 | else if (shared) | |
1455 | t = 2 * sizeof (Elf64_External_Rela); | |
1456 | ||
9b8a8575 | 1457 | hppa_info->root.srelplt->size += t; |
15bda425 JL |
1458 | } |
1459 | ||
b34976b6 | 1460 | return TRUE; |
15bda425 JL |
1461 | } |
1462 | ||
1463 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1464 | regular object. */ | |
1465 | ||
b34976b6 | 1466 | static bfd_boolean |
813c8a3c | 1467 | elf64_hppa_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
a03bd320 | 1468 | struct elf_link_hash_entry *eh) |
15bda425 JL |
1469 | { |
1470 | /* ??? Undefined symbols with PLT entries should be re-defined | |
1471 | to be the PLT entry. */ | |
1472 | ||
1473 | /* If this is a weak symbol, and there is a real definition, the | |
1474 | processor independent code will have arranged for us to see the | |
1475 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1476 | if (eh->is_weakalias) |
15bda425 | 1477 | { |
60d67dc8 AM |
1478 | struct elf_link_hash_entry *def = weakdef (eh); |
1479 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1480 | eh->root.u.def.section = def->root.u.def.section; | |
1481 | eh->root.u.def.value = def->root.u.def.value; | |
b34976b6 | 1482 | return TRUE; |
15bda425 JL |
1483 | } |
1484 | ||
1485 | /* If this is a reference to a symbol defined by a dynamic object which | |
1486 | is not a function, we might allocate the symbol in our .dynbss section | |
1487 | and allocate a COPY dynamic relocation. | |
1488 | ||
1489 | But PA64 code is canonically PIC, so as a rule we can avoid this sort | |
1490 | of hackery. */ | |
1491 | ||
b34976b6 | 1492 | return TRUE; |
15bda425 JL |
1493 | } |
1494 | ||
47b7c2db AM |
1495 | /* This function is called via elf_link_hash_traverse to mark millicode |
1496 | symbols with a dynindx of -1 and to remove the string table reference | |
1497 | from the dynamic symbol table. If the symbol is not a millicode symbol, | |
1498 | elf64_hppa_mark_exported_functions is called. */ | |
1499 | ||
b34976b6 | 1500 | static bfd_boolean |
a03bd320 | 1501 | elf64_hppa_mark_milli_and_exported_functions (struct elf_link_hash_entry *eh, |
813c8a3c | 1502 | void *data) |
47b7c2db | 1503 | { |
7686d77d | 1504 | struct bfd_link_info *info = (struct bfd_link_info *) data; |
47b7c2db | 1505 | |
7686d77d | 1506 | if (eh->type == STT_PARISC_MILLI) |
47b7c2db | 1507 | { |
7686d77d | 1508 | if (eh->dynindx != -1) |
47b7c2db | 1509 | { |
7686d77d | 1510 | eh->dynindx = -1; |
47b7c2db | 1511 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, |
7686d77d | 1512 | eh->dynstr_index); |
47b7c2db | 1513 | } |
b34976b6 | 1514 | return TRUE; |
47b7c2db AM |
1515 | } |
1516 | ||
a03bd320 | 1517 | return elf64_hppa_mark_exported_functions (eh, data); |
47b7c2db AM |
1518 | } |
1519 | ||
15bda425 JL |
1520 | /* Set the final sizes of the dynamic sections and allocate memory for |
1521 | the contents of our special sections. */ | |
1522 | ||
b34976b6 | 1523 | static bfd_boolean |
a03bd320 | 1524 | elf64_hppa_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
15bda425 | 1525 | { |
a03bd320 DA |
1526 | struct elf64_hppa_link_hash_table *hppa_info; |
1527 | struct elf64_hppa_allocate_data data; | |
15bda425 | 1528 | bfd *dynobj; |
a03bd320 DA |
1529 | bfd *ibfd; |
1530 | asection *sec; | |
b34976b6 | 1531 | bfd_boolean relocs; |
15bda425 | 1532 | |
a03bd320 | 1533 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
1534 | if (hppa_info == NULL) |
1535 | return FALSE; | |
15bda425 | 1536 | |
ce558b89 | 1537 | dynobj = hppa_info->root.dynobj; |
15bda425 JL |
1538 | BFD_ASSERT (dynobj != NULL); |
1539 | ||
47b7c2db AM |
1540 | /* Mark each function this program exports so that we will allocate |
1541 | space in the .opd section for each function's FPTR. If we are | |
1542 | creating dynamic sections, change the dynamic index of millicode | |
1543 | symbols to -1 and remove them from the string table for .dynstr. | |
1544 | ||
1545 | We have to traverse the main linker hash table since we have to | |
1546 | find functions which may not have been mentioned in any relocs. */ | |
ce558b89 AM |
1547 | elf_link_hash_traverse (&hppa_info->root, |
1548 | (hppa_info->root.dynamic_sections_created | |
47b7c2db AM |
1549 | ? elf64_hppa_mark_milli_and_exported_functions |
1550 | : elf64_hppa_mark_exported_functions), | |
1551 | info); | |
1552 | ||
ce558b89 | 1553 | if (hppa_info->root.dynamic_sections_created) |
15bda425 JL |
1554 | { |
1555 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1556 | if (bfd_link_executable (info) && !info->nointerp) |
15bda425 | 1557 | { |
3d4d4302 | 1558 | sec = bfd_get_linker_section (dynobj, ".interp"); |
a03bd320 DA |
1559 | BFD_ASSERT (sec != NULL); |
1560 | sec->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1561 | sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
15bda425 JL |
1562 | } |
1563 | } | |
1564 | else | |
1565 | { | |
1566 | /* We may have created entries in the .rela.got section. | |
1567 | However, if we are not creating the dynamic sections, we will | |
1568 | not actually use these entries. Reset the size of .rela.dlt, | |
1569 | which will cause it to get stripped from the output file | |
1570 | below. */ | |
ce558b89 | 1571 | sec = hppa_info->dlt_rel_sec; |
a03bd320 DA |
1572 | if (sec != NULL) |
1573 | sec->size = 0; | |
1574 | } | |
1575 | ||
1576 | /* Set up DLT, PLT and OPD offsets for local syms, and space for local | |
1577 | dynamic relocs. */ | |
c72f2fb2 | 1578 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a03bd320 DA |
1579 | { |
1580 | bfd_signed_vma *local_dlt; | |
1581 | bfd_signed_vma *end_local_dlt; | |
1582 | bfd_signed_vma *local_plt; | |
1583 | bfd_signed_vma *end_local_plt; | |
1584 | bfd_signed_vma *local_opd; | |
1585 | bfd_signed_vma *end_local_opd; | |
1586 | bfd_size_type locsymcount; | |
1587 | Elf_Internal_Shdr *symtab_hdr; | |
1588 | asection *srel; | |
1589 | ||
1590 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
1591 | continue; | |
1592 | ||
1593 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1594 | { | |
1595 | struct elf64_hppa_dyn_reloc_entry *hdh_p; | |
1596 | ||
1597 | for (hdh_p = ((struct elf64_hppa_dyn_reloc_entry *) | |
1598 | elf_section_data (sec)->local_dynrel); | |
1599 | hdh_p != NULL; | |
1600 | hdh_p = hdh_p->next) | |
1601 | { | |
1602 | if (!bfd_is_abs_section (hdh_p->sec) | |
1603 | && bfd_is_abs_section (hdh_p->sec->output_section)) | |
1604 | { | |
1605 | /* Input section has been discarded, either because | |
1606 | it is a copy of a linkonce section or due to | |
1607 | linker script /DISCARD/, so we'll be discarding | |
1608 | the relocs too. */ | |
1609 | } | |
1610 | else if (hdh_p->count != 0) | |
1611 | { | |
1612 | srel = elf_section_data (hdh_p->sec)->sreloc; | |
1613 | srel->size += hdh_p->count * sizeof (Elf64_External_Rela); | |
1614 | if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0) | |
1615 | info->flags |= DF_TEXTREL; | |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | local_dlt = elf_local_got_refcounts (ibfd); | |
1621 | if (!local_dlt) | |
1622 | continue; | |
1623 | ||
1624 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1625 | locsymcount = symtab_hdr->sh_info; | |
1626 | end_local_dlt = local_dlt + locsymcount; | |
1627 | sec = hppa_info->dlt_sec; | |
1628 | srel = hppa_info->dlt_rel_sec; | |
1629 | for (; local_dlt < end_local_dlt; ++local_dlt) | |
1630 | { | |
1631 | if (*local_dlt > 0) | |
1632 | { | |
1633 | *local_dlt = sec->size; | |
1634 | sec->size += DLT_ENTRY_SIZE; | |
0e1862bb | 1635 | if (bfd_link_pic (info)) |
07d6d2b8 | 1636 | { |
a03bd320 | 1637 | srel->size += sizeof (Elf64_External_Rela); |
07d6d2b8 | 1638 | } |
a03bd320 DA |
1639 | } |
1640 | else | |
1641 | *local_dlt = (bfd_vma) -1; | |
1642 | } | |
1643 | ||
1644 | local_plt = end_local_dlt; | |
1645 | end_local_plt = local_plt + locsymcount; | |
1646 | if (! hppa_info->root.dynamic_sections_created) | |
1647 | { | |
1648 | /* Won't be used, but be safe. */ | |
1649 | for (; local_plt < end_local_plt; ++local_plt) | |
1650 | *local_plt = (bfd_vma) -1; | |
1651 | } | |
1652 | else | |
1653 | { | |
9b8a8575 L |
1654 | sec = hppa_info->root.splt; |
1655 | srel = hppa_info->root.srelplt; | |
a03bd320 DA |
1656 | for (; local_plt < end_local_plt; ++local_plt) |
1657 | { | |
1658 | if (*local_plt > 0) | |
1659 | { | |
1660 | *local_plt = sec->size; | |
1661 | sec->size += PLT_ENTRY_SIZE; | |
0e1862bb | 1662 | if (bfd_link_pic (info)) |
a03bd320 DA |
1663 | srel->size += sizeof (Elf64_External_Rela); |
1664 | } | |
1665 | else | |
1666 | *local_plt = (bfd_vma) -1; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | local_opd = end_local_plt; | |
1671 | end_local_opd = local_opd + locsymcount; | |
1672 | if (! hppa_info->root.dynamic_sections_created) | |
1673 | { | |
1674 | /* Won't be used, but be safe. */ | |
1675 | for (; local_opd < end_local_opd; ++local_opd) | |
1676 | *local_opd = (bfd_vma) -1; | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | sec = hppa_info->opd_sec; | |
1681 | srel = hppa_info->opd_rel_sec; | |
1682 | for (; local_opd < end_local_opd; ++local_opd) | |
1683 | { | |
1684 | if (*local_opd > 0) | |
1685 | { | |
1686 | *local_opd = sec->size; | |
1687 | sec->size += OPD_ENTRY_SIZE; | |
0e1862bb | 1688 | if (bfd_link_pic (info)) |
a03bd320 DA |
1689 | srel->size += sizeof (Elf64_External_Rela); |
1690 | } | |
1691 | else | |
1692 | *local_opd = (bfd_vma) -1; | |
1693 | } | |
1694 | } | |
15bda425 JL |
1695 | } |
1696 | ||
1697 | /* Allocate the GOT entries. */ | |
1698 | ||
1699 | data.info = info; | |
a03bd320 | 1700 | if (hppa_info->dlt_sec) |
15bda425 | 1701 | { |
a03bd320 | 1702 | data.ofs = hppa_info->dlt_sec->size; |
ce558b89 | 1703 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1704 | allocate_global_data_dlt, &data); |
eea6121a | 1705 | hppa_info->dlt_sec->size = data.ofs; |
a03bd320 | 1706 | } |
15bda425 | 1707 | |
9b8a8575 | 1708 | if (hppa_info->root.splt) |
a03bd320 | 1709 | { |
9b8a8575 | 1710 | data.ofs = hppa_info->root.splt->size; |
ce558b89 | 1711 | elf_link_hash_traverse (&hppa_info->root, |
07d6d2b8 | 1712 | allocate_global_data_plt, &data); |
9b8a8575 | 1713 | hppa_info->root.splt->size = data.ofs; |
a03bd320 | 1714 | } |
15bda425 | 1715 | |
a03bd320 DA |
1716 | if (hppa_info->stub_sec) |
1717 | { | |
15bda425 | 1718 | data.ofs = 0x0; |
ce558b89 | 1719 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1720 | allocate_global_data_stub, &data); |
eea6121a | 1721 | hppa_info->stub_sec->size = data.ofs; |
15bda425 JL |
1722 | } |
1723 | ||
15bda425 | 1724 | /* Allocate space for entries in the .opd section. */ |
a03bd320 | 1725 | if (hppa_info->opd_sec) |
15bda425 | 1726 | { |
a03bd320 | 1727 | data.ofs = hppa_info->opd_sec->size; |
ce558b89 | 1728 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1729 | allocate_global_data_opd, &data); |
eea6121a | 1730 | hppa_info->opd_sec->size = data.ofs; |
15bda425 JL |
1731 | } |
1732 | ||
1733 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1734 | if (hppa_info->root.dynamic_sections_created) | |
ce558b89 | 1735 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1736 | allocate_dynrel_entries, &data); |
15bda425 JL |
1737 | |
1738 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 | 1739 | relocs = FALSE; |
a03bd320 | 1740 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
15bda425 JL |
1741 | { |
1742 | const char *name; | |
15bda425 | 1743 | |
a03bd320 | 1744 | if ((sec->flags & SEC_LINKER_CREATED) == 0) |
15bda425 JL |
1745 | continue; |
1746 | ||
1747 | /* It's OK to base decisions on the section name, because none | |
1748 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 1749 | name = bfd_section_name (sec); |
15bda425 | 1750 | |
15bda425 JL |
1751 | if (strcmp (name, ".plt") == 0) |
1752 | { | |
c456f082 | 1753 | /* Remember whether there is a PLT. */ |
3084d7a2 | 1754 | ; |
15bda425 | 1755 | } |
c456f082 | 1756 | else if (strcmp (name, ".opd") == 0 |
0112cd26 | 1757 | || CONST_STRNEQ (name, ".dlt") |
c456f082 AM |
1758 | || strcmp (name, ".stub") == 0 |
1759 | || strcmp (name, ".got") == 0) | |
15bda425 | 1760 | { |
d663e1cd | 1761 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 | 1762 | } |
0112cd26 | 1763 | else if (CONST_STRNEQ (name, ".rela")) |
15bda425 | 1764 | { |
a03bd320 | 1765 | if (sec->size != 0) |
15bda425 | 1766 | { |
15bda425 JL |
1767 | /* Remember whether there are any reloc sections other |
1768 | than .rela.plt. */ | |
1769 | if (strcmp (name, ".rela.plt") != 0) | |
3084d7a2 | 1770 | relocs = TRUE; |
15bda425 JL |
1771 | |
1772 | /* We use the reloc_count field as a counter if we need | |
1773 | to copy relocs into the output file. */ | |
a03bd320 | 1774 | sec->reloc_count = 0; |
15bda425 JL |
1775 | } |
1776 | } | |
c456f082 | 1777 | else |
15bda425 JL |
1778 | { |
1779 | /* It's not one of our sections, so don't allocate space. */ | |
1780 | continue; | |
1781 | } | |
1782 | ||
a03bd320 | 1783 | if (sec->size == 0) |
15bda425 | 1784 | { |
c456f082 AM |
1785 | /* If we don't need this section, strip it from the |
1786 | output file. This is mostly to handle .rela.bss and | |
1787 | .rela.plt. We must create both sections in | |
1788 | create_dynamic_sections, because they must be created | |
1789 | before the linker maps input sections to output | |
1790 | sections. The linker does that before | |
1791 | adjust_dynamic_symbol is called, and it is that | |
1792 | function which decides whether anything needs to go | |
1793 | into these sections. */ | |
a03bd320 | 1794 | sec->flags |= SEC_EXCLUDE; |
15bda425 JL |
1795 | continue; |
1796 | } | |
1797 | ||
a03bd320 | 1798 | if ((sec->flags & SEC_HAS_CONTENTS) == 0) |
c456f082 AM |
1799 | continue; |
1800 | ||
15bda425 | 1801 | /* Allocate memory for the section contents if it has not |
832d951b AM |
1802 | been allocated already. We use bfd_zalloc here in case |
1803 | unused entries are not reclaimed before the section's | |
1804 | contents are written out. This should not happen, but this | |
1805 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1806 | garbage. */ | |
a03bd320 | 1807 | if (sec->contents == NULL) |
15bda425 | 1808 | { |
a03bd320 DA |
1809 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
1810 | if (sec->contents == NULL) | |
b34976b6 | 1811 | return FALSE; |
15bda425 JL |
1812 | } |
1813 | } | |
1814 | ||
ce558b89 | 1815 | if (hppa_info->root.dynamic_sections_created) |
15bda425 JL |
1816 | { |
1817 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1818 | the PLT, it is how we communicate the __gp value of a load | |
1819 | module to the dynamic linker. */ | |
dc810e39 | 1820 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1821 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1822 | |
3084d7a2 | 1823 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0)) |
b34976b6 | 1824 | return FALSE; |
15bda425 JL |
1825 | |
1826 | /* Add some entries to the .dynamic section. We fill in the | |
1827 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1828 | must add the entries now so that we get the correct size for | |
1829 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1830 | dynamic linker and used by the debugger. */ | |
0e1862bb | 1831 | if (! bfd_link_pic (info)) |
15bda425 | 1832 | { |
3084d7a2 | 1833 | if (!add_dynamic_entry (DT_HP_DLD_HOOK, 0) |
dc810e39 | 1834 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) |
b34976b6 | 1835 | return FALSE; |
15bda425 JL |
1836 | } |
1837 | ||
f2482cb2 NC |
1838 | /* Force DT_FLAGS to always be set. |
1839 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1840 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1841 | return FALSE; |
15bda425 | 1842 | } |
dc810e39 | 1843 | #undef add_dynamic_entry |
15bda425 | 1844 | |
3084d7a2 | 1845 | return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs); |
15bda425 JL |
1846 | } |
1847 | ||
1848 | /* Called after we have output the symbol into the dynamic symbol | |
1849 | table, but before we output the symbol into the normal symbol | |
1850 | table. | |
1851 | ||
1852 | For some symbols we had to change their address when outputting | |
1853 | the dynamic symbol table. We undo that change here so that | |
1854 | the symbols have their expected value in the normal symbol | |
1855 | table. Ick. */ | |
1856 | ||
6e0b88f1 | 1857 | static int |
a03bd320 | 1858 | elf64_hppa_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
813c8a3c DA |
1859 | const char *name, |
1860 | Elf_Internal_Sym *sym, | |
1861 | asection *input_sec ATTRIBUTE_UNUSED, | |
a03bd320 | 1862 | struct elf_link_hash_entry *eh) |
15bda425 | 1863 | { |
a03bd320 | 1864 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1865 | |
1866 | /* We may be called with the file symbol or section symbols. | |
1867 | They never need munging, so it is safe to ignore them. */ | |
a03bd320 | 1868 | if (!name || !eh) |
6e0b88f1 | 1869 | return 1; |
15bda425 | 1870 | |
832d951b AM |
1871 | /* Function symbols for which we created .opd entries *may* have been |
1872 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1873 | ||
1874 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1875 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1876 | mark_exported_functions and check to see if it was overwritten | |
a03bd320 DA |
1877 | here instead of just checking eh->dynindx. */ |
1878 | if (hh->want_opd && hh->st_shndx != -1) | |
15bda425 JL |
1879 | { |
1880 | /* Restore the saved value and section index. */ | |
a03bd320 DA |
1881 | sym->st_value = hh->st_value; |
1882 | sym->st_shndx = hh->st_shndx; | |
15bda425 JL |
1883 | } |
1884 | ||
6e0b88f1 | 1885 | return 1; |
15bda425 JL |
1886 | } |
1887 | ||
1888 | /* Finish up dynamic symbol handling. We set the contents of various | |
1889 | dynamic sections here. */ | |
1890 | ||
b34976b6 | 1891 | static bfd_boolean |
813c8a3c DA |
1892 | elf64_hppa_finish_dynamic_symbol (bfd *output_bfd, |
1893 | struct bfd_link_info *info, | |
a03bd320 | 1894 | struct elf_link_hash_entry *eh, |
813c8a3c | 1895 | Elf_Internal_Sym *sym) |
15bda425 | 1896 | { |
a03bd320 | 1897 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
c7e2358a | 1898 | asection *stub, *splt, *sopd, *spltrel; |
15bda425 | 1899 | struct elf64_hppa_link_hash_table *hppa_info; |
15bda425 | 1900 | |
a03bd320 | 1901 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
1902 | if (hppa_info == NULL) |
1903 | return FALSE; | |
15bda425 JL |
1904 | |
1905 | stub = hppa_info->stub_sec; | |
9b8a8575 | 1906 | splt = hppa_info->root.splt; |
15bda425 | 1907 | sopd = hppa_info->opd_sec; |
9b8a8575 | 1908 | spltrel = hppa_info->root.srelplt; |
15bda425 | 1909 | |
15bda425 JL |
1910 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1911 | value when building the dynamic symbol table for a shared library. | |
1912 | At least for symbols that refer to functions. | |
1913 | ||
1914 | We will store a new value and section index into the symbol long | |
1915 | enough to output it into the dynamic symbol table, then we restore | |
1916 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
a03bd320 | 1917 | if (hh->want_opd) |
15bda425 | 1918 | { |
f12123c0 | 1919 | BFD_ASSERT (sopd != NULL); |
d663e1cd | 1920 | |
15bda425 JL |
1921 | /* Save away the original value and section index so that we |
1922 | can restore them later. */ | |
a03bd320 DA |
1923 | hh->st_value = sym->st_value; |
1924 | hh->st_shndx = sym->st_shndx; | |
15bda425 JL |
1925 | |
1926 | /* For the dynamic symbol table entry, we want the value to be | |
1927 | address of this symbol's entry within the .opd section. */ | |
a03bd320 | 1928 | sym->st_value = (hh->opd_offset |
15bda425 JL |
1929 | + sopd->output_offset |
1930 | + sopd->output_section->vma); | |
1931 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
1932 | sopd->output_section); | |
1933 | } | |
1934 | ||
1935 | /* Initialize a .plt entry if requested. */ | |
a03bd320 DA |
1936 | if (hh->want_plt |
1937 | && elf64_hppa_dynamic_symbol_p (eh, info)) | |
15bda425 JL |
1938 | { |
1939 | bfd_vma value; | |
1940 | Elf_Internal_Rela rel; | |
947216bf | 1941 | bfd_byte *loc; |
15bda425 | 1942 | |
f12123c0 | 1943 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
d663e1cd | 1944 | |
15bda425 JL |
1945 | /* We do not actually care about the value in the PLT entry |
1946 | if we are creating a shared library and the symbol is | |
1947 | still undefined, we create a dynamic relocation to fill | |
1948 | in the correct value. */ | |
0e1862bb | 1949 | if (bfd_link_pic (info) && eh->root.type == bfd_link_hash_undefined) |
15bda425 JL |
1950 | value = 0; |
1951 | else | |
a03bd320 | 1952 | value = (eh->root.u.def.value + eh->root.u.def.section->vma); |
15bda425 | 1953 | |
fe8bc63d | 1954 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
1955 | |
1956 | The format of a plt entry is | |
fe8bc63d | 1957 | <funcaddr> <__gp>. |
15bda425 JL |
1958 | |
1959 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 1960 | install the PLT entry. |
15bda425 JL |
1961 | |
1962 | We are modifying the in-memory PLT contents here, so we do not add | |
1963 | in the output_offset of the PLT section. */ | |
1964 | ||
a03bd320 | 1965 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset); |
586338b8 | 1966 | value = _bfd_get_gp_value (info->output_bfd); |
a03bd320 | 1967 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset + 0x8); |
15bda425 JL |
1968 | |
1969 | /* Create a dynamic IPLT relocation for this entry. | |
1970 | ||
1971 | We are creating a relocation in the output file's PLT section, | |
1972 | which is included within the DLT secton. So we do need to include | |
1973 | the PLT's output_offset in the computation of the relocation's | |
1974 | address. */ | |
a03bd320 | 1975 | rel.r_offset = (hh->plt_offset + splt->output_offset |
15bda425 | 1976 | + splt->output_section->vma); |
a03bd320 | 1977 | rel.r_info = ELF64_R_INFO (hh->eh.dynindx, R_PARISC_IPLT); |
15bda425 JL |
1978 | rel.r_addend = 0; |
1979 | ||
947216bf AM |
1980 | loc = spltrel->contents; |
1981 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
586338b8 | 1982 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 JL |
1983 | } |
1984 | ||
1985 | /* Initialize an external call stub entry if requested. */ | |
a03bd320 DA |
1986 | if (hh->want_stub |
1987 | && elf64_hppa_dynamic_symbol_p (eh, info)) | |
15bda425 JL |
1988 | { |
1989 | bfd_vma value; | |
1990 | int insn; | |
b352eebf | 1991 | unsigned int max_offset; |
15bda425 | 1992 | |
f12123c0 | 1993 | BFD_ASSERT (stub != NULL); |
d663e1cd | 1994 | |
15bda425 JL |
1995 | /* Install the generic stub template. |
1996 | ||
1997 | We are modifying the contents of the stub section, so we do not | |
1998 | need to include the stub section's output_offset here. */ | |
a03bd320 | 1999 | memcpy (stub->contents + hh->stub_offset, plt_stub, sizeof (plt_stub)); |
15bda425 JL |
2000 | |
2001 | /* Fix up the first ldd instruction. | |
2002 | ||
2003 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2004 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2005 | |
2006 | Note the plt_offset value is the value of the PLT entry relative to | |
2007 | the start of the PLT section. These instructions will reference | |
2008 | data relative to the value of __gp, which may not necessarily have | |
2009 | the same address as the start of the PLT section. | |
2010 | ||
2011 | gp_offset contains the offset of __gp within the PLT section. */ | |
a03bd320 | 2012 | value = hh->plt_offset - hppa_info->gp_offset; |
fe8bc63d | 2013 | |
a03bd320 | 2014 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset); |
b352eebf AM |
2015 | if (output_bfd->arch_info->mach >= 25) |
2016 | { | |
2017 | /* Wide mode allows 16 bit offsets. */ | |
2018 | max_offset = 32768; | |
2019 | insn &= ~ 0xfff1; | |
dc810e39 | 2020 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2021 | } |
2022 | else | |
2023 | { | |
2024 | max_offset = 8192; | |
2025 | insn &= ~ 0x3ff1; | |
dc810e39 | 2026 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2027 | } |
2028 | ||
2029 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2030 | { | |
4eca0228 | 2031 | _bfd_error_handler |
695344c0 | 2032 | /* xgettext:c-format */ |
2dcf00ce AM |
2033 | (_("stub entry for %s cannot load .plt, dp offset = %" PRId64), |
2034 | hh->eh.root.root.string, (int64_t) value); | |
b34976b6 | 2035 | return FALSE; |
b352eebf AM |
2036 | } |
2037 | ||
dc810e39 | 2038 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
a03bd320 | 2039 | stub->contents + hh->stub_offset); |
15bda425 JL |
2040 | |
2041 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2042 | value += 8; |
a03bd320 | 2043 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset + 8); |
b352eebf AM |
2044 | if (output_bfd->arch_info->mach >= 25) |
2045 | { | |
2046 | insn &= ~ 0xfff1; | |
dc810e39 | 2047 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2048 | } |
2049 | else | |
2050 | { | |
2051 | insn &= ~ 0x3ff1; | |
dc810e39 | 2052 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2053 | } |
dc810e39 | 2054 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
a03bd320 | 2055 | stub->contents + hh->stub_offset + 8); |
15bda425 JL |
2056 | } |
2057 | ||
b34976b6 | 2058 | return TRUE; |
15bda425 JL |
2059 | } |
2060 | ||
2061 | /* The .opd section contains FPTRs for each function this file | |
2062 | exports. Initialize the FPTR entries. */ | |
2063 | ||
b34976b6 | 2064 | static bfd_boolean |
a03bd320 | 2065 | elf64_hppa_finalize_opd (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 2066 | { |
a03bd320 | 2067 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2068 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2069 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 JL |
2070 | asection *sopd; |
2071 | asection *sopdrel; | |
2072 | ||
a03bd320 | 2073 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2074 | if (hppa_info == NULL) |
2075 | return FALSE; | |
2076 | ||
15bda425 JL |
2077 | sopd = hppa_info->opd_sec; |
2078 | sopdrel = hppa_info->opd_rel_sec; | |
2079 | ||
a03bd320 | 2080 | if (hh->want_opd) |
15bda425 JL |
2081 | { |
2082 | bfd_vma value; | |
2083 | ||
fe8bc63d | 2084 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2085 | |
2086 | We are modifying the contents of the OPD section in memory, so we | |
2087 | do not need to include its output offset in this computation. */ | |
a03bd320 | 2088 | memset (sopd->contents + hh->opd_offset, 0, 16); |
15bda425 | 2089 | |
a03bd320 DA |
2090 | value = (eh->root.u.def.value |
2091 | + eh->root.u.def.section->output_section->vma | |
2092 | + eh->root.u.def.section->output_offset); | |
15bda425 JL |
2093 | |
2094 | /* The next word is the address of the function. */ | |
a03bd320 | 2095 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 16); |
15bda425 JL |
2096 | |
2097 | /* The last word is our local __gp value. */ | |
586338b8 | 2098 | value = _bfd_get_gp_value (info->output_bfd); |
a03bd320 | 2099 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 24); |
15bda425 JL |
2100 | } |
2101 | ||
2102 | /* If we are generating a shared library, we must generate EPLT relocations | |
2103 | for each entry in the .opd, even for static functions (they may have | |
2104 | had their address taken). */ | |
0e1862bb | 2105 | if (bfd_link_pic (info) && hh->want_opd) |
15bda425 | 2106 | { |
947216bf AM |
2107 | Elf_Internal_Rela rel; |
2108 | bfd_byte *loc; | |
15bda425 JL |
2109 | int dynindx; |
2110 | ||
2111 | /* We may need to do a relocation against a local symbol, in | |
2112 | which case we have to look up it's dynamic symbol index off | |
2113 | the local symbol hash table. */ | |
a03bd320 DA |
2114 | if (eh->dynindx != -1) |
2115 | dynindx = eh->dynindx; | |
15bda425 JL |
2116 | else |
2117 | dynindx | |
a03bd320 DA |
2118 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2119 | hh->sym_indx); | |
15bda425 JL |
2120 | |
2121 | /* The offset of this relocation is the absolute address of the | |
2122 | .opd entry for this symbol. */ | |
a03bd320 | 2123 | rel.r_offset = (hh->opd_offset + sopd->output_offset |
15bda425 JL |
2124 | + sopd->output_section->vma); |
2125 | ||
2126 | /* If H is non-null, then we have an external symbol. | |
2127 | ||
2128 | It is imperative that we use a different dynamic symbol for the | |
2129 | EPLT relocation if the symbol has global scope. | |
2130 | ||
2131 | In the dynamic symbol table, the function symbol will have a value | |
2132 | which is address of the function's .opd entry. | |
2133 | ||
2134 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2135 | (if we did, the data in the .opd would reference itself rather | |
2136 | than the actual address of the function). Instead we have to use | |
2137 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2138 | function symbol. |
15bda425 JL |
2139 | |
2140 | We prefix the original symbol with a "." and use the new symbol in | |
2141 | the EPLT relocation. This new symbol has already been recorded in | |
2142 | the symbol table, we just have to look it up and use it. | |
2143 | ||
2144 | We do not have such problems with static functions because we do | |
2145 | not make their addresses in the dynamic symbol table point to | |
2146 | the .opd entry. Ultimately this should be safe since a static | |
2147 | function can not be directly referenced outside of its shared | |
2148 | library. | |
2149 | ||
2150 | We do have to play similar games for FPTR relocations in shared | |
2151 | libraries, including those for static symbols. See the FPTR | |
2152 | handling in elf64_hppa_finalize_dynreloc. */ | |
a03bd320 | 2153 | if (eh) |
15bda425 JL |
2154 | { |
2155 | char *new_name; | |
2156 | struct elf_link_hash_entry *nh; | |
2157 | ||
e1fa0163 | 2158 | new_name = concat (".", eh->root.root.string, NULL); |
15bda425 JL |
2159 | |
2160 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
adfef0bd | 2161 | new_name, TRUE, TRUE, FALSE); |
68ffbac6 | 2162 | |
15bda425 JL |
2163 | /* All we really want from the new symbol is its dynamic |
2164 | symbol index. */ | |
7fb9f789 NC |
2165 | if (nh) |
2166 | dynindx = nh->dynindx; | |
e1fa0163 | 2167 | free (new_name); |
15bda425 JL |
2168 | } |
2169 | ||
2170 | rel.r_addend = 0; | |
2171 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2172 | ||
947216bf AM |
2173 | loc = sopdrel->contents; |
2174 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
586338b8 | 2175 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 | 2176 | } |
b34976b6 | 2177 | return TRUE; |
15bda425 JL |
2178 | } |
2179 | ||
2180 | /* The .dlt section contains addresses for items referenced through the | |
2181 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2182 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2183 | ||
b34976b6 | 2184 | static bfd_boolean |
a03bd320 | 2185 | elf64_hppa_finalize_dlt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 2186 | { |
a03bd320 | 2187 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2188 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2189 | struct elf64_hppa_link_hash_table *hppa_info; | |
2190 | asection *sdlt, *sdltrel; | |
15bda425 | 2191 | |
a03bd320 | 2192 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2193 | if (hppa_info == NULL) |
2194 | return FALSE; | |
15bda425 JL |
2195 | |
2196 | sdlt = hppa_info->dlt_sec; | |
2197 | sdltrel = hppa_info->dlt_rel_sec; | |
2198 | ||
2199 | /* H/DYN_H may refer to a local variable and we know it's | |
2200 | address, so there is no need to create a relocation. Just install | |
2201 | the proper value into the DLT, note this shortcut can not be | |
2202 | skipped when building a shared library. */ | |
0e1862bb | 2203 | if (! bfd_link_pic (info) && hh && hh->want_dlt) |
15bda425 JL |
2204 | { |
2205 | bfd_vma value; | |
2206 | ||
2207 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2208 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2209 | |
2210 | We include the OPD's output offset in this computation as | |
2211 | we are referring to an absolute address in the resulting | |
2212 | object file. */ | |
a03bd320 | 2213 | if (hh->want_opd) |
15bda425 | 2214 | { |
a03bd320 | 2215 | value = (hh->opd_offset |
15bda425 JL |
2216 | + hppa_info->opd_sec->output_offset |
2217 | + hppa_info->opd_sec->output_section->vma); | |
2218 | } | |
a03bd320 DA |
2219 | else if ((eh->root.type == bfd_link_hash_defined |
2220 | || eh->root.type == bfd_link_hash_defweak) | |
2221 | && eh->root.u.def.section) | |
15bda425 | 2222 | { |
a03bd320 DA |
2223 | value = eh->root.u.def.value + eh->root.u.def.section->output_offset; |
2224 | if (eh->root.u.def.section->output_section) | |
2225 | value += eh->root.u.def.section->output_section->vma; | |
15bda425 | 2226 | else |
a03bd320 | 2227 | value += eh->root.u.def.section->vma; |
15bda425 | 2228 | } |
3db4b612 JL |
2229 | else |
2230 | /* We have an undefined function reference. */ | |
2231 | value = 0; | |
15bda425 JL |
2232 | |
2233 | /* We do not need to include the output offset of the DLT section | |
2234 | here because we are modifying the in-memory contents. */ | |
a03bd320 | 2235 | bfd_put_64 (sdlt->owner, value, sdlt->contents + hh->dlt_offset); |
15bda425 JL |
2236 | } |
2237 | ||
4cc11e76 | 2238 | /* Create a relocation for the DLT entry associated with this symbol. |
15bda425 | 2239 | When building a shared library the symbol does not have to be dynamic. */ |
a03bd320 | 2240 | if (hh->want_dlt |
0e1862bb | 2241 | && (elf64_hppa_dynamic_symbol_p (eh, info) || bfd_link_pic (info))) |
15bda425 | 2242 | { |
947216bf AM |
2243 | Elf_Internal_Rela rel; |
2244 | bfd_byte *loc; | |
15bda425 JL |
2245 | int dynindx; |
2246 | ||
2247 | /* We may need to do a relocation against a local symbol, in | |
2248 | which case we have to look up it's dynamic symbol index off | |
2249 | the local symbol hash table. */ | |
a03bd320 DA |
2250 | if (eh && eh->dynindx != -1) |
2251 | dynindx = eh->dynindx; | |
15bda425 JL |
2252 | else |
2253 | dynindx | |
a03bd320 DA |
2254 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2255 | hh->sym_indx); | |
15bda425 | 2256 | |
15bda425 JL |
2257 | /* Create a dynamic relocation for this entry. Do include the output |
2258 | offset of the DLT entry since we need an absolute address in the | |
2259 | resulting object file. */ | |
a03bd320 | 2260 | rel.r_offset = (hh->dlt_offset + sdlt->output_offset |
15bda425 | 2261 | + sdlt->output_section->vma); |
a03bd320 | 2262 | if (eh && eh->type == STT_FUNC) |
15bda425 JL |
2263 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); |
2264 | else | |
2265 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2266 | rel.r_addend = 0; | |
2267 | ||
947216bf AM |
2268 | loc = sdltrel->contents; |
2269 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
586338b8 | 2270 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 | 2271 | } |
b34976b6 | 2272 | return TRUE; |
15bda425 JL |
2273 | } |
2274 | ||
2275 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2276 | for dynamic functions used to initialize static data. */ | |
2277 | ||
b34976b6 | 2278 | static bfd_boolean |
a03bd320 | 2279 | elf64_hppa_finalize_dynreloc (struct elf_link_hash_entry *eh, |
813c8a3c | 2280 | void *data) |
15bda425 | 2281 | { |
a03bd320 | 2282 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2283 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2284 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 JL |
2285 | int dynamic_symbol; |
2286 | ||
a03bd320 | 2287 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, info); |
15bda425 | 2288 | |
0e1862bb | 2289 | if (!dynamic_symbol && !bfd_link_pic (info)) |
b34976b6 | 2290 | return TRUE; |
15bda425 | 2291 | |
a03bd320 | 2292 | if (hh->reloc_entries) |
15bda425 JL |
2293 | { |
2294 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2295 | int dynindx; | |
2296 | ||
a03bd320 | 2297 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2298 | if (hppa_info == NULL) |
2299 | return FALSE; | |
15bda425 JL |
2300 | |
2301 | /* We may need to do a relocation against a local symbol, in | |
2302 | which case we have to look up it's dynamic symbol index off | |
2303 | the local symbol hash table. */ | |
a03bd320 DA |
2304 | if (eh->dynindx != -1) |
2305 | dynindx = eh->dynindx; | |
15bda425 JL |
2306 | else |
2307 | dynindx | |
a03bd320 DA |
2308 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2309 | hh->sym_indx); | |
15bda425 | 2310 | |
a03bd320 | 2311 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
15bda425 | 2312 | { |
947216bf AM |
2313 | Elf_Internal_Rela rel; |
2314 | bfd_byte *loc; | |
15bda425 | 2315 | |
d663e1cd JL |
2316 | /* Allocate one iff we are building a shared library, the relocation |
2317 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
0e1862bb L |
2318 | if (!bfd_link_pic (info) |
2319 | && rent->type == R_PARISC_FPTR64 && hh->want_opd) | |
d663e1cd | 2320 | continue; |
15bda425 | 2321 | |
fe8bc63d | 2322 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2323 | |
2324 | We need the output offset for the reloc's section because | |
2325 | we are creating an absolute address in the resulting object | |
2326 | file. */ | |
2327 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2328 | + rent->sec->output_section->vma); | |
2329 | ||
2330 | /* An FPTR64 relocation implies that we took the address of | |
2331 | a function and that the function has an entry in the .opd | |
2332 | section. We want the FPTR64 relocation to reference the | |
2333 | entry in .opd. | |
2334 | ||
2335 | We could munge the symbol value in the dynamic symbol table | |
2336 | (in fact we already do for functions with global scope) to point | |
2337 | to the .opd entry. Then we could use that dynamic symbol in | |
2338 | this relocation. | |
2339 | ||
2340 | Or we could do something sensible, not munge the symbol's | |
2341 | address and instead just use a different symbol to reference | |
2342 | the .opd entry. At least that seems sensible until you | |
2343 | realize there's no local dynamic symbols we can use for that | |
2344 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2345 | |
15bda425 JL |
2346 | We use a section symbol recorded by check_relocs as the |
2347 | base symbol for the relocation. The addend is the difference | |
2348 | between the section symbol and the address of the .opd entry. */ | |
0e1862bb L |
2349 | if (bfd_link_pic (info) |
2350 | && rent->type == R_PARISC_FPTR64 && hh->want_opd) | |
15bda425 JL |
2351 | { |
2352 | bfd_vma value, value2; | |
15bda425 JL |
2353 | |
2354 | /* First compute the address of the opd entry for this symbol. */ | |
a03bd320 | 2355 | value = (hh->opd_offset |
15bda425 JL |
2356 | + hppa_info->opd_sec->output_section->vma |
2357 | + hppa_info->opd_sec->output_offset); | |
2358 | ||
2359 | /* Compute the value of the start of the section with | |
2360 | the relocation. */ | |
2361 | value2 = (rent->sec->output_section->vma | |
2362 | + rent->sec->output_offset); | |
2363 | ||
2364 | /* Compute the difference between the start of the section | |
2365 | with the relocation and the opd entry. */ | |
2366 | value -= value2; | |
fe8bc63d | 2367 | |
15bda425 JL |
2368 | /* The result becomes the addend of the relocation. */ |
2369 | rel.r_addend = value; | |
2370 | ||
2371 | /* The section symbol becomes the symbol for the dynamic | |
2372 | relocation. */ | |
2373 | dynindx | |
2374 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2375 | rent->sec->owner, | |
2376 | rent->sec_symndx); | |
2377 | } | |
2378 | else | |
2379 | rel.r_addend = rent->addend; | |
2380 | ||
2381 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2382 | ||
947216bf AM |
2383 | loc = hppa_info->other_rel_sec->contents; |
2384 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2385 | * sizeof (Elf64_External_Rela)); | |
586338b8 | 2386 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 JL |
2387 | } |
2388 | } | |
2389 | ||
b34976b6 | 2390 | return TRUE; |
15bda425 JL |
2391 | } |
2392 | ||
5ac81c74 JL |
2393 | /* Used to decide how to sort relocs in an optimal manner for the |
2394 | dynamic linker, before writing them out. */ | |
2395 | ||
2396 | static enum elf_reloc_type_class | |
7e612e98 AM |
2397 | elf64_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2398 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2399 | const Elf_Internal_Rela *rela) | |
5ac81c74 | 2400 | { |
cf35638d | 2401 | if (ELF64_R_SYM (rela->r_info) == STN_UNDEF) |
5ac81c74 JL |
2402 | return reloc_class_relative; |
2403 | ||
2404 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2405 | { | |
2406 | case R_PARISC_IPLT: | |
2407 | return reloc_class_plt; | |
2408 | case R_PARISC_COPY: | |
2409 | return reloc_class_copy; | |
2410 | default: | |
2411 | return reloc_class_normal; | |
2412 | } | |
2413 | } | |
2414 | ||
15bda425 JL |
2415 | /* Finish up the dynamic sections. */ |
2416 | ||
b34976b6 | 2417 | static bfd_boolean |
813c8a3c DA |
2418 | elf64_hppa_finish_dynamic_sections (bfd *output_bfd, |
2419 | struct bfd_link_info *info) | |
15bda425 JL |
2420 | { |
2421 | bfd *dynobj; | |
2422 | asection *sdyn; | |
2423 | struct elf64_hppa_link_hash_table *hppa_info; | |
2424 | ||
a03bd320 | 2425 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2426 | if (hppa_info == NULL) |
2427 | return FALSE; | |
15bda425 JL |
2428 | |
2429 | /* Finalize the contents of the .opd section. */ | |
a03bd320 DA |
2430 | elf_link_hash_traverse (elf_hash_table (info), |
2431 | elf64_hppa_finalize_opd, | |
2432 | info); | |
15bda425 | 2433 | |
a03bd320 DA |
2434 | elf_link_hash_traverse (elf_hash_table (info), |
2435 | elf64_hppa_finalize_dynreloc, | |
2436 | info); | |
15bda425 JL |
2437 | |
2438 | /* Finalize the contents of the .dlt section. */ | |
2439 | dynobj = elf_hash_table (info)->dynobj; | |
2440 | /* Finalize the contents of the .dlt section. */ | |
a03bd320 DA |
2441 | elf_link_hash_traverse (elf_hash_table (info), |
2442 | elf64_hppa_finalize_dlt, | |
2443 | info); | |
15bda425 | 2444 | |
3d4d4302 | 2445 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
15bda425 JL |
2446 | |
2447 | if (elf_hash_table (info)->dynamic_sections_created) | |
2448 | { | |
2449 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2450 | |
2451 | BFD_ASSERT (sdyn != NULL); | |
2452 | ||
2453 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 2454 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
15bda425 JL |
2455 | for (; dyncon < dynconend; dyncon++) |
2456 | { | |
2457 | Elf_Internal_Dyn dyn; | |
2458 | asection *s; | |
2459 | ||
2460 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2461 | ||
2462 | switch (dyn.d_tag) | |
2463 | { | |
2464 | default: | |
2465 | break; | |
2466 | ||
2467 | case DT_HP_LOAD_MAP: | |
2468 | /* Compute the absolute address of 16byte scratchpad area | |
2469 | for the dynamic linker. | |
2470 | ||
2471 | By convention the linker script will allocate the scratchpad | |
2472 | area at the start of the .data section. So all we have to | |
2473 | to is find the start of the .data section. */ | |
2474 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
a505d7ac MR |
2475 | if (!s) |
2476 | return FALSE; | |
15bda425 JL |
2477 | dyn.d_un.d_ptr = s->vma; |
2478 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2479 | break; | |
2480 | ||
2481 | case DT_PLTGOT: | |
2482 | /* HP's use PLTGOT to set the GOT register. */ | |
2483 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2484 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2485 | break; | |
2486 | ||
2487 | case DT_JMPREL: | |
9b8a8575 | 2488 | s = hppa_info->root.srelplt; |
15bda425 JL |
2489 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2490 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2491 | break; | |
2492 | ||
2493 | case DT_PLTRELSZ: | |
9b8a8575 | 2494 | s = hppa_info->root.srelplt; |
eea6121a | 2495 | dyn.d_un.d_val = s->size; |
15bda425 JL |
2496 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2497 | break; | |
2498 | ||
2499 | case DT_RELA: | |
2500 | s = hppa_info->other_rel_sec; | |
eea6121a | 2501 | if (! s || ! s->size) |
15bda425 | 2502 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2503 | if (! s || ! s->size) |
5ac81c74 | 2504 | s = hppa_info->opd_rel_sec; |
15bda425 JL |
2505 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2506 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2507 | break; | |
2508 | ||
2509 | case DT_RELASZ: | |
2510 | s = hppa_info->other_rel_sec; | |
eea6121a | 2511 | dyn.d_un.d_val = s->size; |
15bda425 | 2512 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2513 | dyn.d_un.d_val += s->size; |
15bda425 | 2514 | s = hppa_info->opd_rel_sec; |
eea6121a | 2515 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2516 | /* There is some question about whether or not the size of |
2517 | the PLT relocs should be included here. HP's tools do | |
2518 | it, so we'll emulate them. */ | |
9b8a8575 | 2519 | s = hppa_info->root.srelplt; |
eea6121a | 2520 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2521 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2522 | break; | |
2523 | ||
2524 | } | |
2525 | } | |
2526 | } | |
2527 | ||
b34976b6 | 2528 | return TRUE; |
15bda425 JL |
2529 | } |
2530 | ||
235ecfbc NC |
2531 | /* Support for core dump NOTE sections. */ |
2532 | ||
2533 | static bfd_boolean | |
2534 | elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2535 | { | |
2536 | int offset; | |
2537 | size_t size; | |
2538 | ||
2539 | switch (note->descsz) | |
2540 | { | |
2541 | default: | |
2542 | return FALSE; | |
2543 | ||
2544 | case 760: /* Linux/hppa */ | |
2545 | /* pr_cursig */ | |
228e534f | 2546 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
235ecfbc NC |
2547 | |
2548 | /* pr_pid */ | |
228e534f | 2549 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
235ecfbc NC |
2550 | |
2551 | /* pr_reg */ | |
2552 | offset = 112; | |
2553 | size = 640; | |
2554 | ||
2555 | break; | |
2556 | } | |
2557 | ||
2558 | /* Make a ".reg/999" section. */ | |
2559 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2560 | size, note->descpos + offset); | |
2561 | } | |
2562 | ||
2563 | static bfd_boolean | |
2564 | elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2565 | { | |
2566 | char * command; | |
2567 | int n; | |
2568 | ||
2569 | switch (note->descsz) | |
2570 | { | |
2571 | default: | |
2572 | return FALSE; | |
2573 | ||
2574 | case 136: /* Linux/hppa elf_prpsinfo. */ | |
228e534f | 2575 | elf_tdata (abfd)->core->program |
235ecfbc | 2576 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2577 | elf_tdata (abfd)->core->command |
235ecfbc NC |
2578 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2579 | } | |
2580 | ||
2581 | /* Note that for some reason, a spurious space is tacked | |
2582 | onto the end of the args in some (at least one anyway) | |
2583 | implementations, so strip it off if it exists. */ | |
228e534f | 2584 | command = elf_tdata (abfd)->core->command; |
235ecfbc NC |
2585 | n = strlen (command); |
2586 | ||
2587 | if (0 < n && command[n - 1] == ' ') | |
2588 | command[n - 1] = '\0'; | |
2589 | ||
2590 | return TRUE; | |
2591 | } | |
2592 | ||
15bda425 JL |
2593 | /* Return the number of additional phdrs we will need. |
2594 | ||
2595 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2596 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2597 | |
2598 | This routine indicates that the backend needs one additional program | |
2599 | header for that case. | |
2600 | ||
2601 | Note we do not have access to the link info structure here, so we have | |
2602 | to guess whether or not we are building a shared library based on the | |
2603 | existence of a .interp section. */ | |
2604 | ||
2605 | static int | |
a6b96beb | 2606 | elf64_hppa_additional_program_headers (bfd *abfd, |
813c8a3c | 2607 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
15bda425 JL |
2608 | { |
2609 | asection *s; | |
2610 | ||
2611 | /* If we are creating a shared library, then we have to create a | |
2612 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2613 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2614 | if (! s) | |
2615 | return 1; | |
2616 | return 0; | |
2617 | } | |
2618 | ||
1a9ccd70 NC |
2619 | static bfd_boolean |
2620 | elf64_hppa_allow_non_load_phdr (bfd *abfd ATTRIBUTE_UNUSED, | |
2621 | const Elf_Internal_Phdr *phdr ATTRIBUTE_UNUSED, | |
2622 | unsigned int count ATTRIBUTE_UNUSED) | |
2623 | { | |
2624 | return TRUE; | |
2625 | } | |
2626 | ||
15bda425 JL |
2627 | /* Allocate and initialize any program headers required by this |
2628 | specific backend. | |
2629 | ||
2630 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2631 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2632 | |
2633 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2634 | for the HP linker. |
15bda425 JL |
2635 | |
2636 | Note we do not have access to the link info structure here, so we have | |
2637 | to guess whether or not we are building a shared library based on the | |
2638 | existence of a .interp section. */ | |
2639 | ||
b34976b6 | 2640 | static bfd_boolean |
22b05d33 | 2641 | elf64_hppa_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
15bda425 | 2642 | { |
edd21aca | 2643 | struct elf_segment_map *m; |
15bda425 | 2644 | |
22b05d33 AM |
2645 | m = elf_seg_map (abfd); |
2646 | if (info != NULL && !info->user_phdrs && m != NULL && m->p_type != PT_PHDR) | |
15bda425 | 2647 | { |
22b05d33 AM |
2648 | m = ((struct elf_segment_map *) |
2649 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2650 | if (m == NULL) |
22b05d33 | 2651 | return FALSE; |
15bda425 | 2652 | |
22b05d33 AM |
2653 | m->p_type = PT_PHDR; |
2654 | m->p_flags = PF_R | PF_X; | |
2655 | m->p_flags_valid = 1; | |
2656 | m->p_paddr_valid = 1; | |
2657 | m->includes_phdrs = 1; | |
15bda425 | 2658 | |
22b05d33 AM |
2659 | m->next = elf_seg_map (abfd); |
2660 | elf_seg_map (abfd) = m; | |
15bda425 JL |
2661 | } |
2662 | ||
22b05d33 | 2663 | for (m = elf_seg_map (abfd) ; m != NULL; m = m->next) |
15bda425 JL |
2664 | if (m->p_type == PT_LOAD) |
2665 | { | |
0ba2a60e | 2666 | unsigned int i; |
15bda425 JL |
2667 | |
2668 | for (i = 0; i < m->count; i++) | |
2669 | { | |
2670 | /* The code "hint" is not really a hint. It is a requirement | |
2671 | for certain versions of the HP dynamic linker. Worse yet, | |
2672 | it must be set even if the shared library does not have | |
2673 | any code in its "text" segment (thus the check for .hash | |
2674 | to catch this situation). */ | |
2675 | if (m->sections[i]->flags & SEC_CODE | |
2676 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2677 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2678 | } | |
2679 | } | |
2680 | ||
b34976b6 | 2681 | return TRUE; |
15bda425 JL |
2682 | } |
2683 | ||
3fab46d0 AM |
2684 | /* Called when writing out an object file to decide the type of a |
2685 | symbol. */ | |
2686 | static int | |
813c8a3c DA |
2687 | elf64_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, |
2688 | int type) | |
3fab46d0 AM |
2689 | { |
2690 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2691 | return STT_PARISC_MILLI; | |
2692 | else | |
2693 | return type; | |
2694 | } | |
2695 | ||
d97a8924 | 2696 | /* Support HP specific sections for core files. */ |
91d6fa6a | 2697 | |
d97a8924 | 2698 | static bfd_boolean |
91d6fa6a | 2699 | elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int sec_index, |
d97a8924 DA |
2700 | const char *typename) |
2701 | { | |
927e625f MK |
2702 | if (hdr->p_type == PT_HP_CORE_KERNEL) |
2703 | { | |
2704 | asection *sect; | |
2705 | ||
91d6fa6a | 2706 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
927e625f MK |
2707 | return FALSE; |
2708 | ||
2709 | sect = bfd_make_section_anyway (abfd, ".kernel"); | |
2710 | if (sect == NULL) | |
2711 | return FALSE; | |
2712 | sect->size = hdr->p_filesz; | |
2713 | sect->filepos = hdr->p_offset; | |
2714 | sect->flags = SEC_HAS_CONTENTS | SEC_READONLY; | |
2715 | return TRUE; | |
2716 | } | |
2717 | ||
d97a8924 DA |
2718 | if (hdr->p_type == PT_HP_CORE_PROC) |
2719 | { | |
2720 | int sig; | |
2721 | ||
2722 | if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0) | |
2723 | return FALSE; | |
2724 | if (bfd_bread (&sig, 4, abfd) != 4) | |
2725 | return FALSE; | |
2726 | ||
228e534f | 2727 | elf_tdata (abfd)->core->signal = sig; |
d97a8924 | 2728 | |
91d6fa6a | 2729 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
d97a8924 | 2730 | return FALSE; |
927e625f MK |
2731 | |
2732 | /* GDB uses the ".reg" section to read register contents. */ | |
2733 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz, | |
2734 | hdr->p_offset); | |
d97a8924 DA |
2735 | } |
2736 | ||
2737 | if (hdr->p_type == PT_HP_CORE_LOADABLE | |
2738 | || hdr->p_type == PT_HP_CORE_STACK | |
2739 | || hdr->p_type == PT_HP_CORE_MMF) | |
2740 | hdr->p_type = PT_LOAD; | |
2741 | ||
91d6fa6a | 2742 | return _bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename); |
d97a8924 DA |
2743 | } |
2744 | ||
5887528b DA |
2745 | /* Hook called by the linker routine which adds symbols from an object |
2746 | file. HP's libraries define symbols with HP specific section | |
2747 | indices, which we have to handle. */ | |
2748 | ||
2749 | static bfd_boolean | |
2750 | elf_hppa_add_symbol_hook (bfd *abfd, | |
2751 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2752 | Elf_Internal_Sym *sym, | |
2753 | const char **namep ATTRIBUTE_UNUSED, | |
2754 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2755 | asection **secp, | |
2756 | bfd_vma *valp) | |
2757 | { | |
91d6fa6a | 2758 | unsigned int sec_index = sym->st_shndx; |
5887528b | 2759 | |
91d6fa6a | 2760 | switch (sec_index) |
5887528b DA |
2761 | { |
2762 | case SHN_PARISC_ANSI_COMMON: | |
2763 | *secp = bfd_make_section_old_way (abfd, ".PARISC.ansi.common"); | |
2764 | (*secp)->flags |= SEC_IS_COMMON; | |
2765 | *valp = sym->st_size; | |
2766 | break; | |
2767 | ||
2768 | case SHN_PARISC_HUGE_COMMON: | |
2769 | *secp = bfd_make_section_old_way (abfd, ".PARISC.huge.common"); | |
2770 | (*secp)->flags |= SEC_IS_COMMON; | |
2771 | *valp = sym->st_size; | |
2772 | break; | |
2773 | } | |
2774 | ||
2775 | return TRUE; | |
2776 | } | |
2777 | ||
2778 | static bfd_boolean | |
2779 | elf_hppa_unmark_useless_dynamic_symbols (struct elf_link_hash_entry *h, | |
2780 | void *data) | |
2781 | { | |
2782 | struct bfd_link_info *info = data; | |
2783 | ||
5887528b DA |
2784 | /* If we are not creating a shared library, and this symbol is |
2785 | referenced by a shared library but is not defined anywhere, then | |
2786 | the generic code will warn that it is undefined. | |
2787 | ||
2788 | This behavior is undesirable on HPs since the standard shared | |
2789 | libraries contain references to undefined symbols. | |
2790 | ||
2791 | So we twiddle the flags associated with such symbols so that they | |
2792 | will not trigger the warning. ?!? FIXME. This is horribly fragile. | |
2793 | ||
2794 | Ultimately we should have better controls over the generic ELF BFD | |
2795 | linker code. */ | |
0e1862bb | 2796 | if (! bfd_link_relocatable (info) |
5887528b DA |
2797 | && info->unresolved_syms_in_shared_libs != RM_IGNORE |
2798 | && h->root.type == bfd_link_hash_undefined | |
2799 | && h->ref_dynamic | |
2800 | && !h->ref_regular) | |
2801 | { | |
2802 | h->ref_dynamic = 0; | |
2803 | h->pointer_equality_needed = 1; | |
2804 | } | |
2805 | ||
2806 | return TRUE; | |
2807 | } | |
2808 | ||
2809 | static bfd_boolean | |
2810 | elf_hppa_remark_useless_dynamic_symbols (struct elf_link_hash_entry *h, | |
2811 | void *data) | |
2812 | { | |
2813 | struct bfd_link_info *info = data; | |
2814 | ||
5887528b DA |
2815 | /* If we are not creating a shared library, and this symbol is |
2816 | referenced by a shared library but is not defined anywhere, then | |
2817 | the generic code will warn that it is undefined. | |
2818 | ||
2819 | This behavior is undesirable on HPs since the standard shared | |
2820 | libraries contain references to undefined symbols. | |
2821 | ||
2822 | So we twiddle the flags associated with such symbols so that they | |
2823 | will not trigger the warning. ?!? FIXME. This is horribly fragile. | |
2824 | ||
2825 | Ultimately we should have better controls over the generic ELF BFD | |
2826 | linker code. */ | |
0e1862bb | 2827 | if (! bfd_link_relocatable (info) |
5887528b DA |
2828 | && info->unresolved_syms_in_shared_libs != RM_IGNORE |
2829 | && h->root.type == bfd_link_hash_undefined | |
2830 | && !h->ref_dynamic | |
2831 | && !h->ref_regular | |
2832 | && h->pointer_equality_needed) | |
2833 | { | |
2834 | h->ref_dynamic = 1; | |
2835 | h->pointer_equality_needed = 0; | |
2836 | } | |
2837 | ||
2838 | return TRUE; | |
2839 | } | |
2840 | ||
2841 | static bfd_boolean | |
2842 | elf_hppa_is_dynamic_loader_symbol (const char *name) | |
2843 | { | |
2844 | return (! strcmp (name, "__CPU_REVISION") | |
2845 | || ! strcmp (name, "__CPU_KEYBITS_1") | |
2846 | || ! strcmp (name, "__SYSTEM_ID_D") | |
2847 | || ! strcmp (name, "__FPU_MODEL") | |
2848 | || ! strcmp (name, "__FPU_REVISION") | |
2849 | || ! strcmp (name, "__ARGC") | |
2850 | || ! strcmp (name, "__ARGV") | |
2851 | || ! strcmp (name, "__ENVP") | |
2852 | || ! strcmp (name, "__TLS_SIZE_D") | |
2853 | || ! strcmp (name, "__LOAD_INFO") | |
2854 | || ! strcmp (name, "__systab")); | |
2855 | } | |
2856 | ||
2857 | /* Record the lowest address for the data and text segments. */ | |
2858 | static void | |
2859 | elf_hppa_record_segment_addrs (bfd *abfd, | |
2860 | asection *section, | |
2861 | void *data) | |
2862 | { | |
2863 | struct elf64_hppa_link_hash_table *hppa_info = data; | |
2864 | ||
2865 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2866 | { | |
2867 | bfd_vma value; | |
2868 | Elf_Internal_Phdr *p; | |
2869 | ||
2870 | p = _bfd_elf_find_segment_containing_section (abfd, section->output_section); | |
2871 | BFD_ASSERT (p != NULL); | |
2872 | value = p->p_vaddr; | |
2873 | ||
2874 | if (section->flags & SEC_READONLY) | |
2875 | { | |
2876 | if (value < hppa_info->text_segment_base) | |
2877 | hppa_info->text_segment_base = value; | |
2878 | } | |
2879 | else | |
2880 | { | |
2881 | if (value < hppa_info->data_segment_base) | |
2882 | hppa_info->data_segment_base = value; | |
2883 | } | |
2884 | } | |
2885 | } | |
2886 | ||
2887 | /* Called after we have seen all the input files/sections, but before | |
2888 | final symbol resolution and section placement has been determined. | |
2889 | ||
2890 | We use this hook to (possibly) provide a value for __gp, then we | |
2891 | fall back to the generic ELF final link routine. */ | |
2892 | ||
2893 | static bfd_boolean | |
2894 | elf_hppa_final_link (bfd *abfd, struct bfd_link_info *info) | |
2895 | { | |
6d4b2867 | 2896 | struct stat buf; |
5887528b DA |
2897 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); |
2898 | ||
4dfe6ac6 NC |
2899 | if (hppa_info == NULL) |
2900 | return FALSE; | |
2901 | ||
0e1862bb | 2902 | if (! bfd_link_relocatable (info)) |
5887528b DA |
2903 | { |
2904 | struct elf_link_hash_entry *gp; | |
2905 | bfd_vma gp_val; | |
2906 | ||
2907 | /* The linker script defines a value for __gp iff it was referenced | |
2908 | by one of the objects being linked. First try to find the symbol | |
2909 | in the hash table. If that fails, just compute the value __gp | |
2910 | should have had. */ | |
2911 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
2912 | FALSE, FALSE); | |
2913 | ||
2914 | if (gp) | |
2915 | { | |
2916 | ||
2917 | /* Adjust the value of __gp as we may want to slide it into the | |
2918 | .plt section so that the stubs can access PLT entries without | |
2919 | using an addil sequence. */ | |
2920 | gp->root.u.def.value += hppa_info->gp_offset; | |
2921 | ||
2922 | gp_val = (gp->root.u.def.section->output_section->vma | |
2923 | + gp->root.u.def.section->output_offset | |
2924 | + gp->root.u.def.value); | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | asection *sec; | |
2929 | ||
2930 | /* First look for a .plt section. If found, then __gp is the | |
2931 | address of the .plt + gp_offset. | |
2932 | ||
2933 | If no .plt is found, then look for .dlt, .opd and .data (in | |
2934 | that order) and set __gp to the base address of whichever | |
2935 | section is found first. */ | |
2936 | ||
9b8a8575 | 2937 | sec = hppa_info->root.splt; |
5887528b DA |
2938 | if (sec && ! (sec->flags & SEC_EXCLUDE)) |
2939 | gp_val = (sec->output_offset | |
2940 | + sec->output_section->vma | |
2941 | + hppa_info->gp_offset); | |
2942 | else | |
2943 | { | |
2944 | sec = hppa_info->dlt_sec; | |
2945 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
2946 | sec = hppa_info->opd_sec; | |
2947 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
2948 | sec = bfd_get_section_by_name (abfd, ".data"); | |
2949 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
2950 | gp_val = 0; | |
2951 | else | |
2952 | gp_val = sec->output_offset + sec->output_section->vma; | |
2953 | } | |
2954 | } | |
2955 | ||
2956 | /* Install whatever value we found/computed for __gp. */ | |
2957 | _bfd_set_gp_value (abfd, gp_val); | |
2958 | } | |
2959 | ||
2960 | /* We need to know the base of the text and data segments so that we | |
2961 | can perform SEGREL relocations. We will record the base addresses | |
2962 | when we encounter the first SEGREL relocation. */ | |
2963 | hppa_info->text_segment_base = (bfd_vma)-1; | |
2964 | hppa_info->data_segment_base = (bfd_vma)-1; | |
2965 | ||
2966 | /* HP's shared libraries have references to symbols that are not | |
2967 | defined anywhere. The generic ELF BFD linker code will complain | |
2968 | about such symbols. | |
2969 | ||
2970 | So we detect the losing case and arrange for the flags on the symbol | |
2971 | to indicate that it was never referenced. This keeps the generic | |
2972 | ELF BFD link code happy and appears to not create any secondary | |
2973 | problems. Ultimately we need a way to control the behavior of the | |
2974 | generic ELF BFD link code better. */ | |
2975 | elf_link_hash_traverse (elf_hash_table (info), | |
2976 | elf_hppa_unmark_useless_dynamic_symbols, | |
2977 | info); | |
2978 | ||
2979 | /* Invoke the regular ELF backend linker to do all the work. */ | |
6d4b2867 JDA |
2980 | if (!bfd_elf_final_link (abfd, info)) |
2981 | return FALSE; | |
5887528b DA |
2982 | |
2983 | elf_link_hash_traverse (elf_hash_table (info), | |
2984 | elf_hppa_remark_useless_dynamic_symbols, | |
2985 | info); | |
2986 | ||
2987 | /* If we're producing a final executable, sort the contents of the | |
2988 | unwind section. */ | |
6d4b2867 JDA |
2989 | if (bfd_link_relocatable (info)) |
2990 | return TRUE; | |
2991 | ||
2992 | /* Do not attempt to sort non-regular files. This is here | |
2993 | especially for configure scripts and kernel builds which run | |
2994 | tests with "ld [...] -o /dev/null". */ | |
765cf5f6 | 2995 | if (stat (bfd_get_filename (abfd), &buf) != 0 |
6d4b2867 JDA |
2996 | || !S_ISREG(buf.st_mode)) |
2997 | return TRUE; | |
5887528b | 2998 | |
6d4b2867 | 2999 | return elf_hppa_sort_unwind (abfd); |
5887528b DA |
3000 | } |
3001 | ||
3002 | /* Relocate the given INSN. VALUE should be the actual value we want | |
3003 | to insert into the instruction, ie by this point we should not be | |
3004 | concerned with computing an offset relative to the DLT, PC, etc. | |
3005 | Instead this routine is meant to handle the bit manipulations needed | |
3006 | to insert the relocation into the given instruction. */ | |
3007 | ||
3008 | static int | |
3009 | elf_hppa_relocate_insn (int insn, int sym_value, unsigned int r_type) | |
3010 | { | |
3011 | switch (r_type) | |
3012 | { | |
3013 | /* This is any 22 bit branch. In PA2.0 syntax it corresponds to | |
3014 | the "B" instruction. */ | |
3015 | case R_PARISC_PCREL22F: | |
3016 | case R_PARISC_PCREL22C: | |
3017 | return (insn & ~0x3ff1ffd) | re_assemble_22 (sym_value); | |
3018 | ||
3019 | /* This is any 12 bit branch. */ | |
3020 | case R_PARISC_PCREL12F: | |
3021 | return (insn & ~0x1ffd) | re_assemble_12 (sym_value); | |
3022 | ||
3023 | /* This is any 17 bit branch. In PA2.0 syntax it also corresponds | |
3024 | to the "B" instruction as well as BE. */ | |
3025 | case R_PARISC_PCREL17F: | |
3026 | case R_PARISC_DIR17F: | |
3027 | case R_PARISC_DIR17R: | |
3028 | case R_PARISC_PCREL17C: | |
3029 | case R_PARISC_PCREL17R: | |
3030 | return (insn & ~0x1f1ffd) | re_assemble_17 (sym_value); | |
3031 | ||
3032 | /* ADDIL or LDIL instructions. */ | |
3033 | case R_PARISC_DLTREL21L: | |
3034 | case R_PARISC_DLTIND21L: | |
3035 | case R_PARISC_LTOFF_FPTR21L: | |
3036 | case R_PARISC_PCREL21L: | |
3037 | case R_PARISC_LTOFF_TP21L: | |
3038 | case R_PARISC_DPREL21L: | |
3039 | case R_PARISC_PLTOFF21L: | |
3040 | case R_PARISC_DIR21L: | |
3041 | return (insn & ~0x1fffff) | re_assemble_21 (sym_value); | |
3042 | ||
3043 | /* LDO and integer loads/stores with 14 bit displacements. */ | |
3044 | case R_PARISC_DLTREL14R: | |
3045 | case R_PARISC_DLTREL14F: | |
3046 | case R_PARISC_DLTIND14R: | |
3047 | case R_PARISC_DLTIND14F: | |
3048 | case R_PARISC_LTOFF_FPTR14R: | |
3049 | case R_PARISC_PCREL14R: | |
3050 | case R_PARISC_PCREL14F: | |
3051 | case R_PARISC_LTOFF_TP14R: | |
3052 | case R_PARISC_LTOFF_TP14F: | |
3053 | case R_PARISC_DPREL14R: | |
3054 | case R_PARISC_DPREL14F: | |
3055 | case R_PARISC_PLTOFF14R: | |
3056 | case R_PARISC_PLTOFF14F: | |
3057 | case R_PARISC_DIR14R: | |
3058 | case R_PARISC_DIR14F: | |
3059 | return (insn & ~0x3fff) | low_sign_unext (sym_value, 14); | |
3060 | ||
3061 | /* PA2.0W LDO and integer loads/stores with 16 bit displacements. */ | |
3062 | case R_PARISC_LTOFF_FPTR16F: | |
3063 | case R_PARISC_PCREL16F: | |
3064 | case R_PARISC_LTOFF_TP16F: | |
3065 | case R_PARISC_GPREL16F: | |
3066 | case R_PARISC_PLTOFF16F: | |
3067 | case R_PARISC_DIR16F: | |
3068 | case R_PARISC_LTOFF16F: | |
3069 | return (insn & ~0xffff) | re_assemble_16 (sym_value); | |
3070 | ||
3071 | /* Doubleword loads and stores with a 14 bit displacement. */ | |
3072 | case R_PARISC_DLTREL14DR: | |
3073 | case R_PARISC_DLTIND14DR: | |
3074 | case R_PARISC_LTOFF_FPTR14DR: | |
3075 | case R_PARISC_LTOFF_FPTR16DF: | |
3076 | case R_PARISC_PCREL14DR: | |
3077 | case R_PARISC_PCREL16DF: | |
3078 | case R_PARISC_LTOFF_TP14DR: | |
3079 | case R_PARISC_LTOFF_TP16DF: | |
3080 | case R_PARISC_DPREL14DR: | |
3081 | case R_PARISC_GPREL16DF: | |
3082 | case R_PARISC_PLTOFF14DR: | |
3083 | case R_PARISC_PLTOFF16DF: | |
3084 | case R_PARISC_DIR14DR: | |
3085 | case R_PARISC_DIR16DF: | |
3086 | case R_PARISC_LTOFF16DF: | |
3087 | return (insn & ~0x3ff1) | (((sym_value & 0x2000) >> 13) | |
3088 | | ((sym_value & 0x1ff8) << 1)); | |
3089 | ||
3090 | /* Floating point single word load/store instructions. */ | |
3091 | case R_PARISC_DLTREL14WR: | |
3092 | case R_PARISC_DLTIND14WR: | |
3093 | case R_PARISC_LTOFF_FPTR14WR: | |
3094 | case R_PARISC_LTOFF_FPTR16WF: | |
3095 | case R_PARISC_PCREL14WR: | |
3096 | case R_PARISC_PCREL16WF: | |
3097 | case R_PARISC_LTOFF_TP14WR: | |
3098 | case R_PARISC_LTOFF_TP16WF: | |
3099 | case R_PARISC_DPREL14WR: | |
3100 | case R_PARISC_GPREL16WF: | |
3101 | case R_PARISC_PLTOFF14WR: | |
3102 | case R_PARISC_PLTOFF16WF: | |
3103 | case R_PARISC_DIR16WF: | |
3104 | case R_PARISC_DIR14WR: | |
3105 | case R_PARISC_LTOFF16WF: | |
3106 | return (insn & ~0x3ff9) | (((sym_value & 0x2000) >> 13) | |
3107 | | ((sym_value & 0x1ffc) << 1)); | |
3108 | ||
3109 | default: | |
3110 | return insn; | |
3111 | } | |
3112 | } | |
3113 | ||
3114 | /* Compute the value for a relocation (REL) during a final link stage, | |
3115 | then insert the value into the proper location in CONTENTS. | |
3116 | ||
3117 | VALUE is a tentative value for the relocation and may be overridden | |
3118 | and modified here based on the specific relocation to be performed. | |
3119 | ||
3120 | For example we do conversions for PC-relative branches in this routine | |
3121 | or redirection of calls to external routines to stubs. | |
3122 | ||
3123 | The work of actually applying the relocation is left to a helper | |
3124 | routine in an attempt to reduce the complexity and size of this | |
3125 | function. */ | |
3126 | ||
3127 | static bfd_reloc_status_type | |
3128 | elf_hppa_final_link_relocate (Elf_Internal_Rela *rel, | |
3129 | bfd *input_bfd, | |
3130 | bfd *output_bfd, | |
3131 | asection *input_section, | |
3132 | bfd_byte *contents, | |
3133 | bfd_vma value, | |
3134 | struct bfd_link_info *info, | |
3135 | asection *sym_sec, | |
3136 | struct elf_link_hash_entry *eh) | |
3137 | { | |
3138 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); | |
3139 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); | |
3140 | bfd_vma *local_offsets; | |
3141 | Elf_Internal_Shdr *symtab_hdr; | |
3142 | int insn; | |
3143 | bfd_vma max_branch_offset = 0; | |
3144 | bfd_vma offset = rel->r_offset; | |
3145 | bfd_signed_vma addend = rel->r_addend; | |
3146 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); | |
3147 | unsigned int r_symndx = ELF_R_SYM (rel->r_info); | |
3148 | unsigned int r_type = howto->type; | |
3149 | bfd_byte *hit_data = contents + offset; | |
3150 | ||
4dfe6ac6 NC |
3151 | if (hppa_info == NULL) |
3152 | return bfd_reloc_notsupported; | |
68ffbac6 | 3153 | |
5887528b DA |
3154 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3155 | local_offsets = elf_local_got_offsets (input_bfd); | |
3156 | insn = bfd_get_32 (input_bfd, hit_data); | |
3157 | ||
3158 | switch (r_type) | |
3159 | { | |
3160 | case R_PARISC_NONE: | |
3161 | break; | |
3162 | ||
3163 | /* Basic function call support. | |
3164 | ||
3165 | Note for a call to a function defined in another dynamic library | |
3166 | we want to redirect the call to a stub. */ | |
3167 | ||
3168 | /* PC relative relocs without an implicit offset. */ | |
3169 | case R_PARISC_PCREL21L: | |
3170 | case R_PARISC_PCREL14R: | |
3171 | case R_PARISC_PCREL14F: | |
3172 | case R_PARISC_PCREL14WR: | |
3173 | case R_PARISC_PCREL14DR: | |
3174 | case R_PARISC_PCREL16F: | |
3175 | case R_PARISC_PCREL16WF: | |
3176 | case R_PARISC_PCREL16DF: | |
3177 | { | |
3178 | /* If this is a call to a function defined in another dynamic | |
3179 | library, then redirect the call to the local stub for this | |
3180 | function. */ | |
3181 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3182 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3183 | + hppa_info->stub_sec->output_section->vma); | |
3184 | ||
3185 | /* Turn VALUE into a proper PC relative address. */ | |
3186 | value -= (offset + input_section->output_offset | |
3187 | + input_section->output_section->vma); | |
3188 | ||
3189 | /* Adjust for any field selectors. */ | |
3190 | if (r_type == R_PARISC_PCREL21L) | |
3191 | value = hppa_field_adjust (value, -8 + addend, e_lsel); | |
3192 | else if (r_type == R_PARISC_PCREL14F | |
3193 | || r_type == R_PARISC_PCREL16F | |
3194 | || r_type == R_PARISC_PCREL16WF | |
3195 | || r_type == R_PARISC_PCREL16DF) | |
3196 | value = hppa_field_adjust (value, -8 + addend, e_fsel); | |
3197 | else | |
3198 | value = hppa_field_adjust (value, -8 + addend, e_rsel); | |
3199 | ||
3200 | /* Apply the relocation to the given instruction. */ | |
3201 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3202 | break; | |
3203 | } | |
3204 | ||
3205 | case R_PARISC_PCREL12F: | |
3206 | case R_PARISC_PCREL22F: | |
3207 | case R_PARISC_PCREL17F: | |
3208 | case R_PARISC_PCREL22C: | |
3209 | case R_PARISC_PCREL17C: | |
3210 | case R_PARISC_PCREL17R: | |
3211 | { | |
3212 | /* If this is a call to a function defined in another dynamic | |
3213 | library, then redirect the call to the local stub for this | |
3214 | function. */ | |
3215 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3216 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3217 | + hppa_info->stub_sec->output_section->vma); | |
3218 | ||
3219 | /* Turn VALUE into a proper PC relative address. */ | |
3220 | value -= (offset + input_section->output_offset | |
3221 | + input_section->output_section->vma); | |
3222 | addend -= 8; | |
3223 | ||
3224 | if (r_type == (unsigned int) R_PARISC_PCREL22F) | |
3225 | max_branch_offset = (1 << (22-1)) << 2; | |
3226 | else if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3227 | max_branch_offset = (1 << (17-1)) << 2; | |
3228 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3229 | max_branch_offset = (1 << (12-1)) << 2; | |
3230 | ||
3231 | /* Make sure we can reach the branch target. */ | |
3232 | if (max_branch_offset != 0 | |
3233 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3234 | { | |
4eca0228 | 3235 | _bfd_error_handler |
695344c0 | 3236 | /* xgettext:c-format */ |
2dcf00ce | 3237 | (_("%pB(%pA+%#" PRIx64 "): cannot reach %s"), |
5887528b DA |
3238 | input_bfd, |
3239 | input_section, | |
2dcf00ce | 3240 | (uint64_t) offset, |
d91a6875 | 3241 | eh ? eh->root.root.string : "unknown"); |
5887528b | 3242 | bfd_set_error (bfd_error_bad_value); |
d91a6875 | 3243 | return bfd_reloc_overflow; |
5887528b DA |
3244 | } |
3245 | ||
3246 | /* Adjust for any field selectors. */ | |
3247 | if (r_type == R_PARISC_PCREL17R) | |
3248 | value = hppa_field_adjust (value, addend, e_rsel); | |
3249 | else | |
3250 | value = hppa_field_adjust (value, addend, e_fsel); | |
3251 | ||
3252 | /* All branches are implicitly shifted by 2 places. */ | |
3253 | value >>= 2; | |
3254 | ||
3255 | /* Apply the relocation to the given instruction. */ | |
3256 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3257 | break; | |
3258 | } | |
3259 | ||
3260 | /* Indirect references to data through the DLT. */ | |
3261 | case R_PARISC_DLTIND14R: | |
3262 | case R_PARISC_DLTIND14F: | |
3263 | case R_PARISC_DLTIND14DR: | |
3264 | case R_PARISC_DLTIND14WR: | |
3265 | case R_PARISC_DLTIND21L: | |
3266 | case R_PARISC_LTOFF_FPTR14R: | |
3267 | case R_PARISC_LTOFF_FPTR14DR: | |
3268 | case R_PARISC_LTOFF_FPTR14WR: | |
3269 | case R_PARISC_LTOFF_FPTR21L: | |
3270 | case R_PARISC_LTOFF_FPTR16F: | |
3271 | case R_PARISC_LTOFF_FPTR16WF: | |
3272 | case R_PARISC_LTOFF_FPTR16DF: | |
3273 | case R_PARISC_LTOFF_TP21L: | |
3274 | case R_PARISC_LTOFF_TP14R: | |
3275 | case R_PARISC_LTOFF_TP14F: | |
3276 | case R_PARISC_LTOFF_TP14WR: | |
3277 | case R_PARISC_LTOFF_TP14DR: | |
3278 | case R_PARISC_LTOFF_TP16F: | |
3279 | case R_PARISC_LTOFF_TP16WF: | |
3280 | case R_PARISC_LTOFF_TP16DF: | |
3281 | case R_PARISC_LTOFF16F: | |
3282 | case R_PARISC_LTOFF16WF: | |
3283 | case R_PARISC_LTOFF16DF: | |
3284 | { | |
3285 | bfd_vma off; | |
3286 | ||
3287 | /* If this relocation was against a local symbol, then we still | |
3288 | have not set up the DLT entry (it's not convenient to do so | |
3289 | in the "finalize_dlt" routine because it is difficult to get | |
3290 | to the local symbol's value). | |
3291 | ||
3292 | So, if this is a local symbol (h == NULL), then we need to | |
3293 | fill in its DLT entry. | |
3294 | ||
3295 | Similarly we may still need to set up an entry in .opd for | |
3296 | a local function which had its address taken. */ | |
3297 | if (hh == NULL) | |
3298 | { | |
3299 | bfd_vma *local_opd_offsets, *local_dlt_offsets; | |
3300 | ||
07d6d2b8 AM |
3301 | if (local_offsets == NULL) |
3302 | abort (); | |
5887528b DA |
3303 | |
3304 | /* Now do .opd creation if needed. */ | |
3305 | if (r_type == R_PARISC_LTOFF_FPTR14R | |
3306 | || r_type == R_PARISC_LTOFF_FPTR14DR | |
3307 | || r_type == R_PARISC_LTOFF_FPTR14WR | |
3308 | || r_type == R_PARISC_LTOFF_FPTR21L | |
3309 | || r_type == R_PARISC_LTOFF_FPTR16F | |
3310 | || r_type == R_PARISC_LTOFF_FPTR16WF | |
3311 | || r_type == R_PARISC_LTOFF_FPTR16DF) | |
3312 | { | |
3313 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; | |
3314 | off = local_opd_offsets[r_symndx]; | |
3315 | ||
3316 | /* The last bit records whether we've already initialised | |
3317 | this local .opd entry. */ | |
3318 | if ((off & 1) != 0) | |
3319 | { | |
3320 | BFD_ASSERT (off != (bfd_vma) -1); | |
3321 | off &= ~1; | |
3322 | } | |
3323 | else | |
3324 | { | |
3325 | local_opd_offsets[r_symndx] |= 1; | |
3326 | ||
3327 | /* The first two words of an .opd entry are zero. */ | |
3328 | memset (hppa_info->opd_sec->contents + off, 0, 16); | |
3329 | ||
3330 | /* The next word is the address of the function. */ | |
3331 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3332 | (hppa_info->opd_sec->contents + off + 16)); | |
3333 | ||
3334 | /* The last word is our local __gp value. */ | |
586338b8 | 3335 | value = _bfd_get_gp_value (info->output_bfd); |
5887528b DA |
3336 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
3337 | (hppa_info->opd_sec->contents + off + 24)); | |
3338 | } | |
3339 | ||
3340 | /* The DLT value is the address of the .opd entry. */ | |
3341 | value = (off | |
3342 | + hppa_info->opd_sec->output_offset | |
3343 | + hppa_info->opd_sec->output_section->vma); | |
3344 | addend = 0; | |
3345 | } | |
3346 | ||
3347 | local_dlt_offsets = local_offsets; | |
3348 | off = local_dlt_offsets[r_symndx]; | |
3349 | ||
3350 | if ((off & 1) != 0) | |
3351 | { | |
3352 | BFD_ASSERT (off != (bfd_vma) -1); | |
3353 | off &= ~1; | |
3354 | } | |
3355 | else | |
3356 | { | |
3357 | local_dlt_offsets[r_symndx] |= 1; | |
3358 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3359 | value + addend, | |
3360 | hppa_info->dlt_sec->contents + off); | |
3361 | } | |
3362 | } | |
3363 | else | |
3364 | off = hh->dlt_offset; | |
3365 | ||
3366 | /* We want the value of the DLT offset for this symbol, not | |
3367 | the symbol's actual address. Note that __gp may not point | |
3368 | to the start of the DLT, so we have to compute the absolute | |
3369 | address, then subtract out the value of __gp. */ | |
3370 | value = (off | |
3371 | + hppa_info->dlt_sec->output_offset | |
3372 | + hppa_info->dlt_sec->output_section->vma); | |
3373 | value -= _bfd_get_gp_value (output_bfd); | |
3374 | ||
3375 | /* All DLTIND relocations are basically the same at this point, | |
3376 | except that we need different field selectors for the 21bit | |
3377 | version vs the 14bit versions. */ | |
3378 | if (r_type == R_PARISC_DLTIND21L | |
3379 | || r_type == R_PARISC_LTOFF_FPTR21L | |
3380 | || r_type == R_PARISC_LTOFF_TP21L) | |
3381 | value = hppa_field_adjust (value, 0, e_lsel); | |
3382 | else if (r_type == R_PARISC_DLTIND14F | |
3383 | || r_type == R_PARISC_LTOFF_FPTR16F | |
3384 | || r_type == R_PARISC_LTOFF_FPTR16WF | |
3385 | || r_type == R_PARISC_LTOFF_FPTR16DF | |
3386 | || r_type == R_PARISC_LTOFF16F | |
3387 | || r_type == R_PARISC_LTOFF16DF | |
3388 | || r_type == R_PARISC_LTOFF16WF | |
3389 | || r_type == R_PARISC_LTOFF_TP16F | |
3390 | || r_type == R_PARISC_LTOFF_TP16WF | |
3391 | || r_type == R_PARISC_LTOFF_TP16DF) | |
3392 | value = hppa_field_adjust (value, 0, e_fsel); | |
3393 | else | |
3394 | value = hppa_field_adjust (value, 0, e_rsel); | |
3395 | ||
3396 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3397 | break; | |
3398 | } | |
3399 | ||
3400 | case R_PARISC_DLTREL14R: | |
3401 | case R_PARISC_DLTREL14F: | |
3402 | case R_PARISC_DLTREL14DR: | |
3403 | case R_PARISC_DLTREL14WR: | |
3404 | case R_PARISC_DLTREL21L: | |
3405 | case R_PARISC_DPREL21L: | |
3406 | case R_PARISC_DPREL14WR: | |
3407 | case R_PARISC_DPREL14DR: | |
3408 | case R_PARISC_DPREL14R: | |
3409 | case R_PARISC_DPREL14F: | |
3410 | case R_PARISC_GPREL16F: | |
3411 | case R_PARISC_GPREL16WF: | |
3412 | case R_PARISC_GPREL16DF: | |
3413 | { | |
3414 | /* Subtract out the global pointer value to make value a DLT | |
3415 | relative address. */ | |
3416 | value -= _bfd_get_gp_value (output_bfd); | |
3417 | ||
3418 | /* All DLTREL relocations are basically the same at this point, | |
3419 | except that we need different field selectors for the 21bit | |
3420 | version vs the 14bit versions. */ | |
3421 | if (r_type == R_PARISC_DLTREL21L | |
3422 | || r_type == R_PARISC_DPREL21L) | |
3423 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3424 | else if (r_type == R_PARISC_DLTREL14F | |
3425 | || r_type == R_PARISC_DPREL14F | |
3426 | || r_type == R_PARISC_GPREL16F | |
3427 | || r_type == R_PARISC_GPREL16WF | |
3428 | || r_type == R_PARISC_GPREL16DF) | |
3429 | value = hppa_field_adjust (value, addend, e_fsel); | |
3430 | else | |
3431 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3432 | ||
3433 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3434 | break; | |
3435 | } | |
3436 | ||
3437 | case R_PARISC_DIR21L: | |
3438 | case R_PARISC_DIR17R: | |
3439 | case R_PARISC_DIR17F: | |
3440 | case R_PARISC_DIR14R: | |
3441 | case R_PARISC_DIR14F: | |
3442 | case R_PARISC_DIR14WR: | |
3443 | case R_PARISC_DIR14DR: | |
3444 | case R_PARISC_DIR16F: | |
3445 | case R_PARISC_DIR16WF: | |
3446 | case R_PARISC_DIR16DF: | |
3447 | { | |
3448 | /* All DIR relocations are basically the same at this point, | |
3449 | except that branch offsets need to be divided by four, and | |
3450 | we need different field selectors. Note that we don't | |
3451 | redirect absolute calls to local stubs. */ | |
3452 | ||
3453 | if (r_type == R_PARISC_DIR21L) | |
3454 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3455 | else if (r_type == R_PARISC_DIR17F | |
3456 | || r_type == R_PARISC_DIR16F | |
3457 | || r_type == R_PARISC_DIR16WF | |
3458 | || r_type == R_PARISC_DIR16DF | |
3459 | || r_type == R_PARISC_DIR14F) | |
3460 | value = hppa_field_adjust (value, addend, e_fsel); | |
3461 | else | |
3462 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3463 | ||
3464 | if (r_type == R_PARISC_DIR17R || r_type == R_PARISC_DIR17F) | |
3465 | /* All branches are implicitly shifted by 2 places. */ | |
3466 | value >>= 2; | |
3467 | ||
3468 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3469 | break; | |
3470 | } | |
3471 | ||
3472 | case R_PARISC_PLTOFF21L: | |
3473 | case R_PARISC_PLTOFF14R: | |
3474 | case R_PARISC_PLTOFF14F: | |
3475 | case R_PARISC_PLTOFF14WR: | |
3476 | case R_PARISC_PLTOFF14DR: | |
3477 | case R_PARISC_PLTOFF16F: | |
3478 | case R_PARISC_PLTOFF16WF: | |
3479 | case R_PARISC_PLTOFF16DF: | |
3480 | { | |
3481 | /* We want the value of the PLT offset for this symbol, not | |
3482 | the symbol's actual address. Note that __gp may not point | |
3483 | to the start of the DLT, so we have to compute the absolute | |
3484 | address, then subtract out the value of __gp. */ | |
3485 | value = (hh->plt_offset | |
9b8a8575 L |
3486 | + hppa_info->root.splt->output_offset |
3487 | + hppa_info->root.splt->output_section->vma); | |
5887528b DA |
3488 | value -= _bfd_get_gp_value (output_bfd); |
3489 | ||
3490 | /* All PLTOFF relocations are basically the same at this point, | |
3491 | except that we need different field selectors for the 21bit | |
3492 | version vs the 14bit versions. */ | |
3493 | if (r_type == R_PARISC_PLTOFF21L) | |
3494 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3495 | else if (r_type == R_PARISC_PLTOFF14F | |
3496 | || r_type == R_PARISC_PLTOFF16F | |
3497 | || r_type == R_PARISC_PLTOFF16WF | |
3498 | || r_type == R_PARISC_PLTOFF16DF) | |
3499 | value = hppa_field_adjust (value, addend, e_fsel); | |
3500 | else | |
3501 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3502 | ||
3503 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3504 | break; | |
3505 | } | |
3506 | ||
3507 | case R_PARISC_LTOFF_FPTR32: | |
3508 | { | |
38cf70ca NC |
3509 | /* FIXME: There used to be code here to create the FPTR itself if |
3510 | the relocation was against a local symbol. But the code could | |
3511 | never have worked. If the assert below is ever triggered then | |
3512 | the code will need to be reinstated and fixed so that it does | |
3513 | what is needed. */ | |
3514 | BFD_ASSERT (hh != NULL); | |
5887528b DA |
3515 | |
3516 | /* We want the value of the DLT offset for this symbol, not | |
3517 | the symbol's actual address. Note that __gp may not point | |
3518 | to the start of the DLT, so we have to compute the absolute | |
3519 | address, then subtract out the value of __gp. */ | |
3520 | value = (hh->dlt_offset | |
3521 | + hppa_info->dlt_sec->output_offset | |
3522 | + hppa_info->dlt_sec->output_section->vma); | |
3523 | value -= _bfd_get_gp_value (output_bfd); | |
3524 | bfd_put_32 (input_bfd, value, hit_data); | |
3525 | return bfd_reloc_ok; | |
3526 | } | |
3527 | ||
3528 | case R_PARISC_LTOFF_FPTR64: | |
3529 | case R_PARISC_LTOFF_TP64: | |
3530 | { | |
3531 | /* We may still need to create the FPTR itself if it was for | |
3532 | a local symbol. */ | |
3533 | if (eh == NULL && r_type == R_PARISC_LTOFF_FPTR64) | |
3534 | { | |
3535 | /* The first two words of an .opd entry are zero. */ | |
3536 | memset (hppa_info->opd_sec->contents + hh->opd_offset, 0, 16); | |
3537 | ||
3538 | /* The next word is the address of the function. */ | |
3539 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3540 | (hppa_info->opd_sec->contents | |
3541 | + hh->opd_offset + 16)); | |
3542 | ||
3543 | /* The last word is our local __gp value. */ | |
586338b8 | 3544 | value = _bfd_get_gp_value (info->output_bfd); |
5887528b DA |
3545 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
3546 | hppa_info->opd_sec->contents + hh->opd_offset + 24); | |
3547 | ||
3548 | /* The DLT value is the address of the .opd entry. */ | |
3549 | value = (hh->opd_offset | |
3550 | + hppa_info->opd_sec->output_offset | |
3551 | + hppa_info->opd_sec->output_section->vma); | |
3552 | ||
3553 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3554 | value, | |
3555 | hppa_info->dlt_sec->contents + hh->dlt_offset); | |
3556 | } | |
3557 | ||
3558 | /* We want the value of the DLT offset for this symbol, not | |
3559 | the symbol's actual address. Note that __gp may not point | |
3560 | to the start of the DLT, so we have to compute the absolute | |
3561 | address, then subtract out the value of __gp. */ | |
3562 | value = (hh->dlt_offset | |
3563 | + hppa_info->dlt_sec->output_offset | |
3564 | + hppa_info->dlt_sec->output_section->vma); | |
3565 | value -= _bfd_get_gp_value (output_bfd); | |
3566 | bfd_put_64 (input_bfd, value, hit_data); | |
3567 | return bfd_reloc_ok; | |
3568 | } | |
3569 | ||
3570 | case R_PARISC_DIR32: | |
3571 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
3572 | return bfd_reloc_ok; | |
3573 | ||
3574 | case R_PARISC_DIR64: | |
3575 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3576 | return bfd_reloc_ok; | |
3577 | ||
3578 | case R_PARISC_GPREL64: | |
3579 | /* Subtract out the global pointer value to make value a DLT | |
3580 | relative address. */ | |
3581 | value -= _bfd_get_gp_value (output_bfd); | |
3582 | ||
3583 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3584 | return bfd_reloc_ok; | |
3585 | ||
3586 | case R_PARISC_LTOFF64: | |
3587 | /* We want the value of the DLT offset for this symbol, not | |
3588 | the symbol's actual address. Note that __gp may not point | |
3589 | to the start of the DLT, so we have to compute the absolute | |
3590 | address, then subtract out the value of __gp. */ | |
3591 | value = (hh->dlt_offset | |
3592 | + hppa_info->dlt_sec->output_offset | |
3593 | + hppa_info->dlt_sec->output_section->vma); | |
3594 | value -= _bfd_get_gp_value (output_bfd); | |
3595 | ||
3596 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3597 | return bfd_reloc_ok; | |
3598 | ||
3599 | case R_PARISC_PCREL32: | |
3600 | { | |
3601 | /* If this is a call to a function defined in another dynamic | |
3602 | library, then redirect the call to the local stub for this | |
3603 | function. */ | |
3604 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3605 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3606 | + hppa_info->stub_sec->output_section->vma); | |
3607 | ||
3608 | /* Turn VALUE into a proper PC relative address. */ | |
3609 | value -= (offset + input_section->output_offset | |
3610 | + input_section->output_section->vma); | |
3611 | ||
3612 | value += addend; | |
3613 | value -= 8; | |
3614 | bfd_put_32 (input_bfd, value, hit_data); | |
3615 | return bfd_reloc_ok; | |
3616 | } | |
3617 | ||
3618 | case R_PARISC_PCREL64: | |
3619 | { | |
3620 | /* If this is a call to a function defined in another dynamic | |
3621 | library, then redirect the call to the local stub for this | |
3622 | function. */ | |
3623 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3624 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3625 | + hppa_info->stub_sec->output_section->vma); | |
3626 | ||
3627 | /* Turn VALUE into a proper PC relative address. */ | |
3628 | value -= (offset + input_section->output_offset | |
3629 | + input_section->output_section->vma); | |
3630 | ||
3631 | value += addend; | |
3632 | value -= 8; | |
3633 | bfd_put_64 (input_bfd, value, hit_data); | |
3634 | return bfd_reloc_ok; | |
3635 | } | |
3636 | ||
3637 | case R_PARISC_FPTR64: | |
3638 | { | |
3639 | bfd_vma off; | |
3640 | ||
3641 | /* We may still need to create the FPTR itself if it was for | |
3642 | a local symbol. */ | |
3643 | if (hh == NULL) | |
3644 | { | |
3645 | bfd_vma *local_opd_offsets; | |
3646 | ||
07d6d2b8 AM |
3647 | if (local_offsets == NULL) |
3648 | abort (); | |
5887528b DA |
3649 | |
3650 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; | |
3651 | off = local_opd_offsets[r_symndx]; | |
3652 | ||
3653 | /* The last bit records whether we've already initialised | |
3654 | this local .opd entry. */ | |
3655 | if ((off & 1) != 0) | |
3656 | { | |
3657 | BFD_ASSERT (off != (bfd_vma) -1); | |
07d6d2b8 | 3658 | off &= ~1; |
5887528b DA |
3659 | } |
3660 | else | |
3661 | { | |
3662 | /* The first two words of an .opd entry are zero. */ | |
3663 | memset (hppa_info->opd_sec->contents + off, 0, 16); | |
3664 | ||
3665 | /* The next word is the address of the function. */ | |
3666 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3667 | (hppa_info->opd_sec->contents + off + 16)); | |
3668 | ||
3669 | /* The last word is our local __gp value. */ | |
586338b8 | 3670 | value = _bfd_get_gp_value (info->output_bfd); |
5887528b DA |
3671 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
3672 | hppa_info->opd_sec->contents + off + 24); | |
3673 | } | |
3674 | } | |
3675 | else | |
3676 | off = hh->opd_offset; | |
3677 | ||
3678 | if (hh == NULL || hh->want_opd) | |
3679 | /* We want the value of the OPD offset for this symbol. */ | |
3680 | value = (off | |
3681 | + hppa_info->opd_sec->output_offset | |
3682 | + hppa_info->opd_sec->output_section->vma); | |
3683 | else | |
3684 | /* We want the address of the symbol. */ | |
3685 | value += addend; | |
3686 | ||
3687 | bfd_put_64 (input_bfd, value, hit_data); | |
3688 | return bfd_reloc_ok; | |
3689 | } | |
3690 | ||
3691 | case R_PARISC_SECREL32: | |
27e5e547 | 3692 | if (sym_sec && sym_sec->output_section) |
5887528b DA |
3693 | value -= sym_sec->output_section->vma; |
3694 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
3695 | return bfd_reloc_ok; | |
3696 | ||
3697 | case R_PARISC_SEGREL32: | |
3698 | case R_PARISC_SEGREL64: | |
3699 | { | |
3700 | /* If this is the first SEGREL relocation, then initialize | |
3701 | the segment base values. */ | |
3702 | if (hppa_info->text_segment_base == (bfd_vma) -1) | |
3703 | bfd_map_over_sections (output_bfd, elf_hppa_record_segment_addrs, | |
3704 | hppa_info); | |
3705 | ||
3706 | /* VALUE holds the absolute address. We want to include the | |
3707 | addend, then turn it into a segment relative address. | |
3708 | ||
3709 | The segment is derived from SYM_SEC. We assume that there are | |
3710 | only two segments of note in the resulting executable/shlib. | |
3711 | A readonly segment (.text) and a readwrite segment (.data). */ | |
3712 | value += addend; | |
3713 | ||
3714 | if (sym_sec->flags & SEC_CODE) | |
3715 | value -= hppa_info->text_segment_base; | |
3716 | else | |
3717 | value -= hppa_info->data_segment_base; | |
3718 | ||
3719 | if (r_type == R_PARISC_SEGREL32) | |
3720 | bfd_put_32 (input_bfd, value, hit_data); | |
3721 | else | |
3722 | bfd_put_64 (input_bfd, value, hit_data); | |
3723 | return bfd_reloc_ok; | |
3724 | } | |
3725 | ||
3726 | /* Something we don't know how to handle. */ | |
3727 | default: | |
3728 | return bfd_reloc_notsupported; | |
3729 | } | |
3730 | ||
3731 | /* Update the instruction word. */ | |
3732 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); | |
3733 | return bfd_reloc_ok; | |
3734 | } | |
3735 | ||
3736 | /* Relocate an HPPA ELF section. */ | |
3737 | ||
3738 | static bfd_boolean | |
3739 | elf64_hppa_relocate_section (bfd *output_bfd, | |
3740 | struct bfd_link_info *info, | |
3741 | bfd *input_bfd, | |
3742 | asection *input_section, | |
3743 | bfd_byte *contents, | |
3744 | Elf_Internal_Rela *relocs, | |
3745 | Elf_Internal_Sym *local_syms, | |
3746 | asection **local_sections) | |
3747 | { | |
3748 | Elf_Internal_Shdr *symtab_hdr; | |
3749 | Elf_Internal_Rela *rel; | |
3750 | Elf_Internal_Rela *relend; | |
3751 | struct elf64_hppa_link_hash_table *hppa_info; | |
3752 | ||
3753 | hppa_info = hppa_link_hash_table (info); | |
4dfe6ac6 NC |
3754 | if (hppa_info == NULL) |
3755 | return FALSE; | |
3756 | ||
5887528b DA |
3757 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3758 | ||
3759 | rel = relocs; | |
3760 | relend = relocs + input_section->reloc_count; | |
3761 | for (; rel < relend; rel++) | |
3762 | { | |
3763 | int r_type; | |
3764 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); | |
3765 | unsigned long r_symndx; | |
3766 | struct elf_link_hash_entry *eh; | |
3767 | Elf_Internal_Sym *sym; | |
3768 | asection *sym_sec; | |
3769 | bfd_vma relocation; | |
3770 | bfd_reloc_status_type r; | |
5887528b DA |
3771 | |
3772 | r_type = ELF_R_TYPE (rel->r_info); | |
3773 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) | |
3774 | { | |
3775 | bfd_set_error (bfd_error_bad_value); | |
3776 | return FALSE; | |
3777 | } | |
3778 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3779 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3780 | continue; | |
3781 | ||
3782 | /* This is a final link. */ | |
3783 | r_symndx = ELF_R_SYM (rel->r_info); | |
3784 | eh = NULL; | |
3785 | sym = NULL; | |
3786 | sym_sec = NULL; | |
5887528b DA |
3787 | if (r_symndx < symtab_hdr->sh_info) |
3788 | { | |
3789 | /* This is a local symbol, hh defaults to NULL. */ | |
3790 | sym = local_syms + r_symndx; | |
3791 | sym_sec = local_sections[r_symndx]; | |
3792 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rel); | |
3793 | } | |
3794 | else | |
3795 | { | |
3796 | /* This is not a local symbol. */ | |
5887528b DA |
3797 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
3798 | ||
68ffbac6 | 3799 | /* It seems this can happen with erroneous or unsupported |
5887528b DA |
3800 | input (mixing a.out and elf in an archive, for example.) */ |
3801 | if (sym_hashes == NULL) | |
3802 | return FALSE; | |
3803 | ||
3804 | eh = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3805 | ||
8a5da09b AM |
3806 | if (info->wrap_hash != NULL |
3807 | && (input_section->flags & SEC_DEBUGGING) != 0) | |
3808 | eh = ((struct elf_link_hash_entry *) | |
3809 | unwrap_hash_lookup (info, input_bfd, &eh->root)); | |
3810 | ||
68ffbac6 | 3811 | while (eh->root.type == bfd_link_hash_indirect |
5887528b DA |
3812 | || eh->root.type == bfd_link_hash_warning) |
3813 | eh = (struct elf_link_hash_entry *) eh->root.u.i.link; | |
3814 | ||
5887528b DA |
3815 | relocation = 0; |
3816 | if (eh->root.type == bfd_link_hash_defined | |
3817 | || eh->root.type == bfd_link_hash_defweak) | |
3818 | { | |
3819 | sym_sec = eh->root.u.def.section; | |
c7e2358a AM |
3820 | if (sym_sec != NULL |
3821 | && sym_sec->output_section != NULL) | |
5887528b DA |
3822 | relocation = (eh->root.u.def.value |
3823 | + sym_sec->output_section->vma | |
3824 | + sym_sec->output_offset); | |
3825 | } | |
3826 | else if (eh->root.type == bfd_link_hash_undefweak) | |
3827 | ; | |
3828 | else if (info->unresolved_syms_in_objects == RM_IGNORE | |
3829 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT) | |
3830 | ; | |
0e1862bb | 3831 | else if (!bfd_link_relocatable (info) |
5887528b DA |
3832 | && elf_hppa_is_dynamic_loader_symbol (eh->root.root.string)) |
3833 | continue; | |
0e1862bb | 3834 | else if (!bfd_link_relocatable (info)) |
5887528b DA |
3835 | { |
3836 | bfd_boolean err; | |
95a51568 FS |
3837 | |
3838 | err = (info->unresolved_syms_in_objects == RM_DIAGNOSE | |
3839 | && !info->warn_unresolved_syms) | |
3840 | || ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT; | |
3841 | ||
3842 | info->callbacks->undefined_symbol | |
3843 | (info, eh->root.root.string, input_bfd, | |
3844 | input_section, rel->r_offset, err); | |
5887528b DA |
3845 | } |
3846 | ||
07d6d2b8 AM |
3847 | if (!bfd_link_relocatable (info) |
3848 | && relocation == 0 | |
3849 | && eh->root.type != bfd_link_hash_defined | |
3850 | && eh->root.type != bfd_link_hash_defweak | |
3851 | && eh->root.type != bfd_link_hash_undefweak) | |
3852 | { | |
3853 | if (info->unresolved_syms_in_objects == RM_IGNORE | |
3854 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT | |
3855 | && eh->type == STT_PARISC_MILLI) | |
95a51568 | 3856 | info->callbacks->undefined_symbol |
1a72702b AM |
3857 | (info, eh_name (eh), input_bfd, |
3858 | input_section, rel->r_offset, FALSE); | |
07d6d2b8 | 3859 | } |
5887528b DA |
3860 | } |
3861 | ||
dbaa2011 | 3862 | if (sym_sec != NULL && discarded_section (sym_sec)) |
e4067dbb | 3863 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3864 | rel, 1, relend, howto, 0, contents); |
5887528b | 3865 | |
0e1862bb | 3866 | if (bfd_link_relocatable (info)) |
5887528b DA |
3867 | continue; |
3868 | ||
3869 | r = elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, | |
3870 | input_section, contents, | |
3871 | relocation, info, sym_sec, | |
3872 | eh); | |
3873 | ||
3874 | if (r != bfd_reloc_ok) | |
3875 | { | |
3876 | switch (r) | |
3877 | { | |
3878 | default: | |
3879 | abort (); | |
3880 | case bfd_reloc_overflow: | |
3881 | { | |
3882 | const char *sym_name; | |
3883 | ||
3884 | if (eh != NULL) | |
3885 | sym_name = NULL; | |
3886 | else | |
3887 | { | |
3888 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
3889 | symtab_hdr->sh_link, | |
3890 | sym->st_name); | |
3891 | if (sym_name == NULL) | |
3892 | return FALSE; | |
3893 | if (*sym_name == '\0') | |
fd361982 | 3894 | sym_name = bfd_section_name (sym_sec); |
5887528b DA |
3895 | } |
3896 | ||
1a72702b AM |
3897 | (*info->callbacks->reloc_overflow) |
3898 | (info, (eh ? &eh->root : NULL), sym_name, howto->name, | |
3899 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
5887528b DA |
3900 | } |
3901 | break; | |
3902 | } | |
3903 | } | |
3904 | } | |
3905 | return TRUE; | |
3906 | } | |
3907 | ||
b35d266b | 3908 | static const struct bfd_elf_special_section elf64_hppa_special_sections[] = |
2f89ff8d | 3909 | { |
df3a023b | 3910 | { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS }, |
07d6d2b8 AM |
3911 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3912 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3913 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
3914 | { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
0112cd26 | 3915 | { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
07d6d2b8 | 3916 | { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
07d6d2b8 | 3917 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
3918 | }; |
3919 | ||
15bda425 JL |
3920 | /* The hash bucket size is the standard one, namely 4. */ |
3921 | ||
3922 | const struct elf_size_info hppa64_elf_size_info = | |
3923 | { | |
3924 | sizeof (Elf64_External_Ehdr), | |
3925 | sizeof (Elf64_External_Phdr), | |
3926 | sizeof (Elf64_External_Shdr), | |
3927 | sizeof (Elf64_External_Rel), | |
3928 | sizeof (Elf64_External_Rela), | |
3929 | sizeof (Elf64_External_Sym), | |
3930 | sizeof (Elf64_External_Dyn), | |
3931 | sizeof (Elf_External_Note), | |
3932 | 4, | |
3933 | 1, | |
45d6a902 | 3934 | 64, 3, |
15bda425 JL |
3935 | ELFCLASS64, EV_CURRENT, |
3936 | bfd_elf64_write_out_phdrs, | |
3937 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3938 | bfd_elf64_checksum_contents, |
15bda425 | 3939 | bfd_elf64_write_relocs, |
73ff0d56 | 3940 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
3941 | bfd_elf64_swap_symbol_out, |
3942 | bfd_elf64_slurp_reloc_table, | |
3943 | bfd_elf64_slurp_symbol_table, | |
3944 | bfd_elf64_swap_dyn_in, | |
3945 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3946 | bfd_elf64_swap_reloc_in, |
3947 | bfd_elf64_swap_reloc_out, | |
3948 | bfd_elf64_swap_reloca_in, | |
3949 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
3950 | }; |
3951 | ||
6d00b590 | 3952 | #define TARGET_BIG_SYM hppa_elf64_vec |
15bda425 JL |
3953 | #define TARGET_BIG_NAME "elf64-hppa" |
3954 | #define ELF_ARCH bfd_arch_hppa | |
ae95ffa6 | 3955 | #define ELF_TARGET_ID HPPA64_ELF_DATA |
15bda425 JL |
3956 | #define ELF_MACHINE_CODE EM_PARISC |
3957 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
3958 | 64M. But everything still uses 4k. */ | |
3959 | #define ELF_MAXPAGESIZE 0x1000 | |
d1036acb L |
3960 | #define ELF_OSABI ELFOSABI_HPUX |
3961 | ||
15bda425 | 3962 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
157090f7 | 3963 | #define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup |
15bda425 JL |
3964 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name |
3965 | #define elf_info_to_howto elf_hppa_info_to_howto | |
3966 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
3967 | ||
3968 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
3969 | #define elf_backend_object_p elf64_hppa_object_p | |
3970 | #define elf_backend_final_write_processing \ | |
3971 | elf_hppa_final_write_processing | |
99c79b2e | 3972 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
3973 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
3974 | ||
f0fe0e16 | 3975 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
3976 | |
3977 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
3978 | ||
3979 | #define elf_backend_create_dynamic_sections \ | |
3980 | elf64_hppa_create_dynamic_sections | |
ed7e9d0b | 3981 | #define elf_backend_init_file_header elf64_hppa_init_file_header |
15bda425 | 3982 | |
d00dd7dc AM |
3983 | #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all |
3984 | ||
15bda425 JL |
3985 | #define elf_backend_adjust_dynamic_symbol \ |
3986 | elf64_hppa_adjust_dynamic_symbol | |
3987 | ||
3988 | #define elf_backend_size_dynamic_sections \ | |
3989 | elf64_hppa_size_dynamic_sections | |
3990 | ||
3991 | #define elf_backend_finish_dynamic_symbol \ | |
3992 | elf64_hppa_finish_dynamic_symbol | |
3993 | #define elf_backend_finish_dynamic_sections \ | |
3994 | elf64_hppa_finish_dynamic_sections | |
235ecfbc NC |
3995 | #define elf_backend_grok_prstatus elf64_hppa_grok_prstatus |
3996 | #define elf_backend_grok_psinfo elf64_hppa_grok_psinfo | |
68ffbac6 | 3997 | |
15bda425 JL |
3998 | /* Stuff for the BFD linker: */ |
3999 | #define bfd_elf64_bfd_link_hash_table_create \ | |
4000 | elf64_hppa_hash_table_create | |
4001 | ||
4002 | #define elf_backend_check_relocs \ | |
4003 | elf64_hppa_check_relocs | |
4004 | ||
4005 | #define elf_backend_size_info \ | |
4006 | hppa64_elf_size_info | |
4007 | ||
4008 | #define elf_backend_additional_program_headers \ | |
4009 | elf64_hppa_additional_program_headers | |
4010 | ||
4011 | #define elf_backend_modify_segment_map \ | |
4012 | elf64_hppa_modify_segment_map | |
4013 | ||
1a9ccd70 NC |
4014 | #define elf_backend_allow_non_load_phdr \ |
4015 | elf64_hppa_allow_non_load_phdr | |
4016 | ||
15bda425 JL |
4017 | #define elf_backend_link_output_symbol_hook \ |
4018 | elf64_hppa_link_output_symbol_hook | |
4019 | ||
15bda425 JL |
4020 | #define elf_backend_want_got_plt 0 |
4021 | #define elf_backend_plt_readonly 0 | |
4022 | #define elf_backend_want_plt_sym 0 | |
4023 | #define elf_backend_got_header_size 0 | |
b34976b6 AM |
4024 | #define elf_backend_type_change_ok TRUE |
4025 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
4026 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
4027 | #define elf_backend_rela_normal 1 | |
29ef7005 | 4028 | #define elf_backend_special_sections elf64_hppa_special_sections |
8a696751 | 4029 | #define elf_backend_action_discarded elf_hppa_action_discarded |
d97a8924 | 4030 | #define elf_backend_section_from_phdr elf64_hppa_section_from_phdr |
15bda425 | 4031 | |
83d1651b L |
4032 | #define elf64_bed elf64_hppa_hpux_bed |
4033 | ||
15bda425 | 4034 | #include "elf64-target.h" |
d952f17a AM |
4035 | |
4036 | #undef TARGET_BIG_SYM | |
6d00b590 | 4037 | #define TARGET_BIG_SYM hppa_elf64_linux_vec |
d952f17a AM |
4038 | #undef TARGET_BIG_NAME |
4039 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
d1036acb | 4040 | #undef ELF_OSABI |
9c55345c | 4041 | #define ELF_OSABI ELFOSABI_GNU |
83d1651b L |
4042 | #undef elf64_bed |
4043 | #define elf64_bed elf64_hppa_linux_bed | |
df3a023b AM |
4044 | #undef elf_backend_special_sections |
4045 | #define elf_backend_special_sections (elf64_hppa_special_sections + 1) | |
d952f17a | 4046 | |
d952f17a | 4047 | #include "elf64-target.h" |