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; | |
120 | asection *plt_sec; | |
121 | asection *plt_rel_sec; | |
122 | asection *opd_sec; | |
123 | asection *opd_rel_sec; | |
124 | asection *other_rel_sec; | |
125 | ||
126 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
127 | to slide __gp into the PLT section so that we can continue to use | |
128 | single DP relative instructions to load values out of the PLT. */ | |
129 | bfd_vma gp_offset; | |
130 | ||
131 | /* Note this is not strictly correct. We should create a stub section for | |
132 | each input section with calls. The stub section should be placed before | |
133 | the section with the call. */ | |
134 | asection *stub_sec; | |
135 | ||
136 | bfd_vma text_segment_base; | |
137 | bfd_vma data_segment_base; | |
138 | ||
15bda425 JL |
139 | /* We build tables to map from an input section back to its |
140 | symbol index. This is the BFD for which we currently have | |
141 | a map. */ | |
142 | bfd *section_syms_bfd; | |
143 | ||
144 | /* Array of symbol numbers for each input section attached to the | |
145 | current BFD. */ | |
146 | int *section_syms; | |
147 | }; | |
148 | ||
a03bd320 | 149 | #define hppa_link_hash_table(p) \ |
4dfe6ac6 NC |
150 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
151 | == HPPA64_ELF_DATA ? ((struct elf64_hppa_link_hash_table *) ((p)->hash)) : NULL) | |
15bda425 | 152 | |
a03bd320 DA |
153 | #define hppa_elf_hash_entry(ent) \ |
154 | ((struct elf64_hppa_link_hash_entry *)(ent)) | |
155 | ||
156 | #define eh_name(eh) \ | |
157 | (eh ? eh->root.root.string : "<undef>") | |
158 | ||
15bda425 | 159 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
813c8a3c | 160 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
15bda425 | 161 | |
15bda425 | 162 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create |
813c8a3c DA |
163 | (bfd *abfd); |
164 | ||
15bda425 JL |
165 | /* This must follow the definitions of the various derived linker |
166 | hash tables and shared functions. */ | |
167 | #include "elf-hppa.h" | |
168 | ||
b34976b6 | 169 | static bfd_boolean elf64_hppa_object_p |
813c8a3c | 170 | (bfd *); |
15bda425 | 171 | |
b34976b6 | 172 | static bfd_boolean elf64_hppa_create_dynamic_sections |
813c8a3c | 173 | (bfd *, struct bfd_link_info *); |
15bda425 | 174 | |
b34976b6 | 175 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
813c8a3c | 176 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
15bda425 | 177 | |
b34976b6 | 178 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
813c8a3c | 179 | (struct elf_link_hash_entry *, void *); |
47b7c2db | 180 | |
b34976b6 | 181 | static bfd_boolean elf64_hppa_size_dynamic_sections |
813c8a3c | 182 | (bfd *, struct bfd_link_info *); |
15bda425 | 183 | |
6e0b88f1 | 184 | static int elf64_hppa_link_output_symbol_hook |
813c8a3c DA |
185 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
186 | asection *, struct elf_link_hash_entry *); | |
99c79b2e | 187 | |
b34976b6 | 188 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
813c8a3c DA |
189 | (bfd *, struct bfd_link_info *, |
190 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
fe8bc63d | 191 | |
b34976b6 | 192 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
813c8a3c | 193 | (bfd *, struct bfd_link_info *); |
15bda425 | 194 | |
b34976b6 | 195 | static bfd_boolean elf64_hppa_check_relocs |
813c8a3c DA |
196 | (bfd *, struct bfd_link_info *, |
197 | asection *, const Elf_Internal_Rela *); | |
15bda425 | 198 | |
b34976b6 | 199 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
813c8a3c | 200 | (struct elf_link_hash_entry *, struct bfd_link_info *); |
15bda425 | 201 | |
b34976b6 | 202 | static bfd_boolean elf64_hppa_mark_exported_functions |
813c8a3c | 203 | (struct elf_link_hash_entry *, void *); |
15bda425 | 204 | |
b34976b6 | 205 | static bfd_boolean elf64_hppa_finalize_opd |
a03bd320 | 206 | (struct elf_link_hash_entry *, void *); |
15bda425 | 207 | |
b34976b6 | 208 | static bfd_boolean elf64_hppa_finalize_dlt |
a03bd320 | 209 | (struct elf_link_hash_entry *, void *); |
15bda425 | 210 | |
b34976b6 | 211 | static bfd_boolean allocate_global_data_dlt |
a03bd320 | 212 | (struct elf_link_hash_entry *, void *); |
15bda425 | 213 | |
b34976b6 | 214 | static bfd_boolean allocate_global_data_plt |
a03bd320 | 215 | (struct elf_link_hash_entry *, void *); |
15bda425 | 216 | |
b34976b6 | 217 | static bfd_boolean allocate_global_data_stub |
a03bd320 | 218 | (struct elf_link_hash_entry *, void *); |
15bda425 | 219 | |
b34976b6 | 220 | static bfd_boolean allocate_global_data_opd |
a03bd320 | 221 | (struct elf_link_hash_entry *, void *); |
15bda425 | 222 | |
b34976b6 | 223 | static bfd_boolean get_reloc_section |
813c8a3c | 224 | (bfd *, struct elf64_hppa_link_hash_table *, asection *); |
15bda425 | 225 | |
b34976b6 | 226 | static bfd_boolean count_dyn_reloc |
a03bd320 | 227 | (bfd *, struct elf64_hppa_link_hash_entry *, |
813c8a3c | 228 | int, asection *, int, bfd_vma, bfd_vma); |
15bda425 | 229 | |
b34976b6 | 230 | static bfd_boolean allocate_dynrel_entries |
a03bd320 | 231 | (struct elf_link_hash_entry *, void *); |
15bda425 | 232 | |
b34976b6 | 233 | static bfd_boolean elf64_hppa_finalize_dynreloc |
a03bd320 | 234 | (struct elf_link_hash_entry *, void *); |
15bda425 | 235 | |
b34976b6 | 236 | static bfd_boolean get_opd |
813c8a3c | 237 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 238 | |
b34976b6 | 239 | static bfd_boolean get_plt |
813c8a3c | 240 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 241 | |
b34976b6 | 242 | static bfd_boolean get_dlt |
813c8a3c | 243 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 244 | |
b34976b6 | 245 | static bfd_boolean get_stub |
813c8a3c | 246 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 247 | |
3fab46d0 | 248 | static int elf64_hppa_elf_get_symbol_type |
813c8a3c | 249 | (Elf_Internal_Sym *, int); |
3fab46d0 | 250 | |
a03bd320 | 251 | /* Initialize an entry in the link hash table. */ |
15bda425 | 252 | |
a03bd320 DA |
253 | static struct bfd_hash_entry * |
254 | hppa64_link_hash_newfunc (struct bfd_hash_entry *entry, | |
255 | struct bfd_hash_table *table, | |
256 | const char *string) | |
15bda425 | 257 | { |
15bda425 JL |
258 | /* Allocate the structure if it has not already been allocated by a |
259 | subclass. */ | |
a03bd320 DA |
260 | if (entry == NULL) |
261 | { | |
262 | entry = bfd_hash_allocate (table, | |
263 | sizeof (struct elf64_hppa_link_hash_entry)); | |
264 | if (entry == NULL) | |
07d6d2b8 | 265 | return entry; |
a03bd320 | 266 | } |
15bda425 | 267 | |
15bda425 | 268 | /* Call the allocation method of the superclass. */ |
a03bd320 DA |
269 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
270 | if (entry != NULL) | |
271 | { | |
272 | struct elf64_hppa_link_hash_entry *hh; | |
15bda425 | 273 | |
a03bd320 DA |
274 | /* Initialize our local data. All zeros. */ |
275 | hh = hppa_elf_hash_entry (entry); | |
276 | memset (&hh->dlt_offset, 0, | |
277 | (sizeof (struct elf64_hppa_link_hash_entry) | |
278 | - offsetof (struct elf64_hppa_link_hash_entry, dlt_offset))); | |
279 | } | |
336549c1 | 280 | |
a03bd320 | 281 | return entry; |
15bda425 JL |
282 | } |
283 | ||
284 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
285 | derived hash table to keep information specific to the PA ElF | |
286 | linker (without using static variables). */ | |
287 | ||
288 | static struct bfd_link_hash_table* | |
813c8a3c | 289 | elf64_hppa_hash_table_create (bfd *abfd) |
15bda425 | 290 | { |
a03bd320 | 291 | struct elf64_hppa_link_hash_table *htab; |
986f0783 | 292 | size_t amt = sizeof (*htab); |
15bda425 | 293 | |
22cdc249 | 294 | htab = bfd_zmalloc (amt); |
a03bd320 DA |
295 | if (htab == NULL) |
296 | return NULL; | |
15bda425 | 297 | |
a03bd320 DA |
298 | if (!_bfd_elf_link_hash_table_init (&htab->root, abfd, |
299 | hppa64_link_hash_newfunc, | |
4dfe6ac6 NC |
300 | sizeof (struct elf64_hppa_link_hash_entry), |
301 | HPPA64_ELF_DATA)) | |
a03bd320 | 302 | { |
22cdc249 | 303 | free (htab); |
a03bd320 DA |
304 | return NULL; |
305 | } | |
15bda425 | 306 | |
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 | { | |
805 | if (! hppa_info->plt_sec | |
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 | ||
1184 | plt = hppa_info->plt_sec; | |
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 | ||
1204 | hppa_info->plt_sec = plt; | |
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; |
4dfe6ac6 | 1363 | hppa_info->plt_rel_sec = 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 | ||
eea6121a | 1457 | hppa_info->plt_rel_sec->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 AM |
1531 | bfd_boolean plt; |
1532 | bfd_boolean relocs; | |
1533 | bfd_boolean reltext; | |
15bda425 | 1534 | |
a03bd320 | 1535 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
1536 | if (hppa_info == NULL) |
1537 | return FALSE; | |
15bda425 | 1538 | |
ce558b89 | 1539 | dynobj = hppa_info->root.dynobj; |
15bda425 JL |
1540 | BFD_ASSERT (dynobj != NULL); |
1541 | ||
47b7c2db AM |
1542 | /* Mark each function this program exports so that we will allocate |
1543 | space in the .opd section for each function's FPTR. If we are | |
1544 | creating dynamic sections, change the dynamic index of millicode | |
1545 | symbols to -1 and remove them from the string table for .dynstr. | |
1546 | ||
1547 | We have to traverse the main linker hash table since we have to | |
1548 | find functions which may not have been mentioned in any relocs. */ | |
ce558b89 AM |
1549 | elf_link_hash_traverse (&hppa_info->root, |
1550 | (hppa_info->root.dynamic_sections_created | |
47b7c2db AM |
1551 | ? elf64_hppa_mark_milli_and_exported_functions |
1552 | : elf64_hppa_mark_exported_functions), | |
1553 | info); | |
1554 | ||
ce558b89 | 1555 | if (hppa_info->root.dynamic_sections_created) |
15bda425 JL |
1556 | { |
1557 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1558 | if (bfd_link_executable (info) && !info->nointerp) |
15bda425 | 1559 | { |
3d4d4302 | 1560 | sec = bfd_get_linker_section (dynobj, ".interp"); |
a03bd320 DA |
1561 | BFD_ASSERT (sec != NULL); |
1562 | sec->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1563 | sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
15bda425 JL |
1564 | } |
1565 | } | |
1566 | else | |
1567 | { | |
1568 | /* We may have created entries in the .rela.got section. | |
1569 | However, if we are not creating the dynamic sections, we will | |
1570 | not actually use these entries. Reset the size of .rela.dlt, | |
1571 | which will cause it to get stripped from the output file | |
1572 | below. */ | |
ce558b89 | 1573 | sec = hppa_info->dlt_rel_sec; |
a03bd320 DA |
1574 | if (sec != NULL) |
1575 | sec->size = 0; | |
1576 | } | |
1577 | ||
1578 | /* Set up DLT, PLT and OPD offsets for local syms, and space for local | |
1579 | dynamic relocs. */ | |
c72f2fb2 | 1580 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a03bd320 DA |
1581 | { |
1582 | bfd_signed_vma *local_dlt; | |
1583 | bfd_signed_vma *end_local_dlt; | |
1584 | bfd_signed_vma *local_plt; | |
1585 | bfd_signed_vma *end_local_plt; | |
1586 | bfd_signed_vma *local_opd; | |
1587 | bfd_signed_vma *end_local_opd; | |
1588 | bfd_size_type locsymcount; | |
1589 | Elf_Internal_Shdr *symtab_hdr; | |
1590 | asection *srel; | |
1591 | ||
1592 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
1593 | continue; | |
1594 | ||
1595 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1596 | { | |
1597 | struct elf64_hppa_dyn_reloc_entry *hdh_p; | |
1598 | ||
1599 | for (hdh_p = ((struct elf64_hppa_dyn_reloc_entry *) | |
1600 | elf_section_data (sec)->local_dynrel); | |
1601 | hdh_p != NULL; | |
1602 | hdh_p = hdh_p->next) | |
1603 | { | |
1604 | if (!bfd_is_abs_section (hdh_p->sec) | |
1605 | && bfd_is_abs_section (hdh_p->sec->output_section)) | |
1606 | { | |
1607 | /* Input section has been discarded, either because | |
1608 | it is a copy of a linkonce section or due to | |
1609 | linker script /DISCARD/, so we'll be discarding | |
1610 | the relocs too. */ | |
1611 | } | |
1612 | else if (hdh_p->count != 0) | |
1613 | { | |
1614 | srel = elf_section_data (hdh_p->sec)->sreloc; | |
1615 | srel->size += hdh_p->count * sizeof (Elf64_External_Rela); | |
1616 | if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0) | |
1617 | info->flags |= DF_TEXTREL; | |
1618 | } | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | local_dlt = elf_local_got_refcounts (ibfd); | |
1623 | if (!local_dlt) | |
1624 | continue; | |
1625 | ||
1626 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1627 | locsymcount = symtab_hdr->sh_info; | |
1628 | end_local_dlt = local_dlt + locsymcount; | |
1629 | sec = hppa_info->dlt_sec; | |
1630 | srel = hppa_info->dlt_rel_sec; | |
1631 | for (; local_dlt < end_local_dlt; ++local_dlt) | |
1632 | { | |
1633 | if (*local_dlt > 0) | |
1634 | { | |
1635 | *local_dlt = sec->size; | |
1636 | sec->size += DLT_ENTRY_SIZE; | |
0e1862bb | 1637 | if (bfd_link_pic (info)) |
07d6d2b8 | 1638 | { |
a03bd320 | 1639 | srel->size += sizeof (Elf64_External_Rela); |
07d6d2b8 | 1640 | } |
a03bd320 DA |
1641 | } |
1642 | else | |
1643 | *local_dlt = (bfd_vma) -1; | |
1644 | } | |
1645 | ||
1646 | local_plt = end_local_dlt; | |
1647 | end_local_plt = local_plt + locsymcount; | |
1648 | if (! hppa_info->root.dynamic_sections_created) | |
1649 | { | |
1650 | /* Won't be used, but be safe. */ | |
1651 | for (; local_plt < end_local_plt; ++local_plt) | |
1652 | *local_plt = (bfd_vma) -1; | |
1653 | } | |
1654 | else | |
1655 | { | |
1656 | sec = hppa_info->plt_sec; | |
1657 | srel = hppa_info->plt_rel_sec; | |
1658 | for (; local_plt < end_local_plt; ++local_plt) | |
1659 | { | |
1660 | if (*local_plt > 0) | |
1661 | { | |
1662 | *local_plt = sec->size; | |
1663 | sec->size += PLT_ENTRY_SIZE; | |
0e1862bb | 1664 | if (bfd_link_pic (info)) |
a03bd320 DA |
1665 | srel->size += sizeof (Elf64_External_Rela); |
1666 | } | |
1667 | else | |
1668 | *local_plt = (bfd_vma) -1; | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | local_opd = end_local_plt; | |
1673 | end_local_opd = local_opd + locsymcount; | |
1674 | if (! hppa_info->root.dynamic_sections_created) | |
1675 | { | |
1676 | /* Won't be used, but be safe. */ | |
1677 | for (; local_opd < end_local_opd; ++local_opd) | |
1678 | *local_opd = (bfd_vma) -1; | |
1679 | } | |
1680 | else | |
1681 | { | |
1682 | sec = hppa_info->opd_sec; | |
1683 | srel = hppa_info->opd_rel_sec; | |
1684 | for (; local_opd < end_local_opd; ++local_opd) | |
1685 | { | |
1686 | if (*local_opd > 0) | |
1687 | { | |
1688 | *local_opd = sec->size; | |
1689 | sec->size += OPD_ENTRY_SIZE; | |
0e1862bb | 1690 | if (bfd_link_pic (info)) |
a03bd320 DA |
1691 | srel->size += sizeof (Elf64_External_Rela); |
1692 | } | |
1693 | else | |
1694 | *local_opd = (bfd_vma) -1; | |
1695 | } | |
1696 | } | |
15bda425 JL |
1697 | } |
1698 | ||
1699 | /* Allocate the GOT entries. */ | |
1700 | ||
1701 | data.info = info; | |
a03bd320 | 1702 | if (hppa_info->dlt_sec) |
15bda425 | 1703 | { |
a03bd320 | 1704 | data.ofs = hppa_info->dlt_sec->size; |
ce558b89 | 1705 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1706 | allocate_global_data_dlt, &data); |
eea6121a | 1707 | hppa_info->dlt_sec->size = data.ofs; |
a03bd320 | 1708 | } |
15bda425 | 1709 | |
a03bd320 DA |
1710 | if (hppa_info->plt_sec) |
1711 | { | |
1712 | data.ofs = hppa_info->plt_sec->size; | |
ce558b89 | 1713 | elf_link_hash_traverse (&hppa_info->root, |
07d6d2b8 | 1714 | allocate_global_data_plt, &data); |
eea6121a | 1715 | hppa_info->plt_sec->size = data.ofs; |
a03bd320 | 1716 | } |
15bda425 | 1717 | |
a03bd320 DA |
1718 | if (hppa_info->stub_sec) |
1719 | { | |
15bda425 | 1720 | data.ofs = 0x0; |
ce558b89 | 1721 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1722 | allocate_global_data_stub, &data); |
eea6121a | 1723 | hppa_info->stub_sec->size = data.ofs; |
15bda425 JL |
1724 | } |
1725 | ||
15bda425 | 1726 | /* Allocate space for entries in the .opd section. */ |
a03bd320 | 1727 | if (hppa_info->opd_sec) |
15bda425 | 1728 | { |
a03bd320 | 1729 | data.ofs = hppa_info->opd_sec->size; |
ce558b89 | 1730 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1731 | allocate_global_data_opd, &data); |
eea6121a | 1732 | hppa_info->opd_sec->size = data.ofs; |
15bda425 JL |
1733 | } |
1734 | ||
1735 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1736 | if (hppa_info->root.dynamic_sections_created) | |
ce558b89 | 1737 | elf_link_hash_traverse (&hppa_info->root, |
a03bd320 | 1738 | allocate_dynrel_entries, &data); |
15bda425 JL |
1739 | |
1740 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 AM |
1741 | plt = FALSE; |
1742 | relocs = FALSE; | |
1743 | reltext = FALSE; | |
a03bd320 | 1744 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
15bda425 JL |
1745 | { |
1746 | const char *name; | |
15bda425 | 1747 | |
a03bd320 | 1748 | if ((sec->flags & SEC_LINKER_CREATED) == 0) |
15bda425 JL |
1749 | continue; |
1750 | ||
1751 | /* It's OK to base decisions on the section name, because none | |
1752 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 1753 | name = bfd_section_name (sec); |
15bda425 | 1754 | |
15bda425 JL |
1755 | if (strcmp (name, ".plt") == 0) |
1756 | { | |
c456f082 | 1757 | /* Remember whether there is a PLT. */ |
a03bd320 | 1758 | plt = sec->size != 0; |
15bda425 | 1759 | } |
c456f082 | 1760 | else if (strcmp (name, ".opd") == 0 |
0112cd26 | 1761 | || CONST_STRNEQ (name, ".dlt") |
c456f082 AM |
1762 | || strcmp (name, ".stub") == 0 |
1763 | || strcmp (name, ".got") == 0) | |
15bda425 | 1764 | { |
d663e1cd | 1765 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 | 1766 | } |
0112cd26 | 1767 | else if (CONST_STRNEQ (name, ".rela")) |
15bda425 | 1768 | { |
a03bd320 | 1769 | if (sec->size != 0) |
15bda425 JL |
1770 | { |
1771 | asection *target; | |
1772 | ||
1773 | /* Remember whether there are any reloc sections other | |
1774 | than .rela.plt. */ | |
1775 | if (strcmp (name, ".rela.plt") != 0) | |
1776 | { | |
1777 | const char *outname; | |
1778 | ||
b34976b6 | 1779 | relocs = TRUE; |
15bda425 JL |
1780 | |
1781 | /* If this relocation section applies to a read only | |
1782 | section, then we probably need a DT_TEXTREL | |
1783 | entry. The entries in the .rela.plt section | |
1784 | really apply to the .got section, which we | |
1785 | created ourselves and so know is not readonly. */ | |
fd361982 | 1786 | outname = bfd_section_name (sec->output_section); |
15bda425 JL |
1787 | target = bfd_get_section_by_name (output_bfd, outname + 4); |
1788 | if (target != NULL | |
1789 | && (target->flags & SEC_READONLY) != 0 | |
1790 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1791 | reltext = TRUE; |
15bda425 JL |
1792 | } |
1793 | ||
1794 | /* We use the reloc_count field as a counter if we need | |
1795 | to copy relocs into the output file. */ | |
a03bd320 | 1796 | sec->reloc_count = 0; |
15bda425 JL |
1797 | } |
1798 | } | |
c456f082 | 1799 | else |
15bda425 JL |
1800 | { |
1801 | /* It's not one of our sections, so don't allocate space. */ | |
1802 | continue; | |
1803 | } | |
1804 | ||
a03bd320 | 1805 | if (sec->size == 0) |
15bda425 | 1806 | { |
c456f082 AM |
1807 | /* If we don't need this section, strip it from the |
1808 | output file. This is mostly to handle .rela.bss and | |
1809 | .rela.plt. We must create both sections in | |
1810 | create_dynamic_sections, because they must be created | |
1811 | before the linker maps input sections to output | |
1812 | sections. The linker does that before | |
1813 | adjust_dynamic_symbol is called, and it is that | |
1814 | function which decides whether anything needs to go | |
1815 | into these sections. */ | |
a03bd320 | 1816 | sec->flags |= SEC_EXCLUDE; |
15bda425 JL |
1817 | continue; |
1818 | } | |
1819 | ||
a03bd320 | 1820 | if ((sec->flags & SEC_HAS_CONTENTS) == 0) |
c456f082 AM |
1821 | continue; |
1822 | ||
15bda425 | 1823 | /* Allocate memory for the section contents if it has not |
832d951b AM |
1824 | been allocated already. We use bfd_zalloc here in case |
1825 | unused entries are not reclaimed before the section's | |
1826 | contents are written out. This should not happen, but this | |
1827 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1828 | garbage. */ | |
a03bd320 | 1829 | if (sec->contents == NULL) |
15bda425 | 1830 | { |
a03bd320 DA |
1831 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
1832 | if (sec->contents == NULL) | |
b34976b6 | 1833 | return FALSE; |
15bda425 JL |
1834 | } |
1835 | } | |
1836 | ||
ce558b89 | 1837 | if (hppa_info->root.dynamic_sections_created) |
15bda425 JL |
1838 | { |
1839 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1840 | the PLT, it is how we communicate the __gp value of a load | |
1841 | module to the dynamic linker. */ | |
dc810e39 | 1842 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1843 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
1844 | |
1845 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) | |
1846 | || !add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 1847 | return FALSE; |
15bda425 JL |
1848 | |
1849 | /* Add some entries to the .dynamic section. We fill in the | |
1850 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1851 | must add the entries now so that we get the correct size for | |
1852 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1853 | dynamic linker and used by the debugger. */ | |
0e1862bb | 1854 | if (! bfd_link_pic (info)) |
15bda425 | 1855 | { |
dc810e39 AM |
1856 | if (!add_dynamic_entry (DT_DEBUG, 0) |
1857 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) | |
1858 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) | |
b34976b6 | 1859 | return FALSE; |
15bda425 JL |
1860 | } |
1861 | ||
f2482cb2 NC |
1862 | /* Force DT_FLAGS to always be set. |
1863 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1864 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1865 | return FALSE; |
f2482cb2 | 1866 | |
15bda425 JL |
1867 | if (plt) |
1868 | { | |
dc810e39 AM |
1869 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
1870 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1871 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1872 | return FALSE; |
15bda425 JL |
1873 | } |
1874 | ||
1875 | if (relocs) | |
1876 | { | |
dc810e39 AM |
1877 | if (!add_dynamic_entry (DT_RELA, 0) |
1878 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1879 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1880 | return FALSE; |
15bda425 JL |
1881 | } |
1882 | ||
1883 | if (reltext) | |
1884 | { | |
dc810e39 | 1885 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1886 | return FALSE; |
d6cf2879 | 1887 | info->flags |= DF_TEXTREL; |
15bda425 JL |
1888 | } |
1889 | } | |
dc810e39 | 1890 | #undef add_dynamic_entry |
15bda425 | 1891 | |
b34976b6 | 1892 | return TRUE; |
15bda425 JL |
1893 | } |
1894 | ||
1895 | /* Called after we have output the symbol into the dynamic symbol | |
1896 | table, but before we output the symbol into the normal symbol | |
1897 | table. | |
1898 | ||
1899 | For some symbols we had to change their address when outputting | |
1900 | the dynamic symbol table. We undo that change here so that | |
1901 | the symbols have their expected value in the normal symbol | |
1902 | table. Ick. */ | |
1903 | ||
6e0b88f1 | 1904 | static int |
a03bd320 | 1905 | elf64_hppa_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
813c8a3c DA |
1906 | const char *name, |
1907 | Elf_Internal_Sym *sym, | |
1908 | asection *input_sec ATTRIBUTE_UNUSED, | |
a03bd320 | 1909 | struct elf_link_hash_entry *eh) |
15bda425 | 1910 | { |
a03bd320 | 1911 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1912 | |
1913 | /* We may be called with the file symbol or section symbols. | |
1914 | They never need munging, so it is safe to ignore them. */ | |
a03bd320 | 1915 | if (!name || !eh) |
6e0b88f1 | 1916 | return 1; |
15bda425 | 1917 | |
832d951b AM |
1918 | /* Function symbols for which we created .opd entries *may* have been |
1919 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1920 | ||
1921 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1922 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1923 | mark_exported_functions and check to see if it was overwritten | |
a03bd320 DA |
1924 | here instead of just checking eh->dynindx. */ |
1925 | if (hh->want_opd && hh->st_shndx != -1) | |
15bda425 JL |
1926 | { |
1927 | /* Restore the saved value and section index. */ | |
a03bd320 DA |
1928 | sym->st_value = hh->st_value; |
1929 | sym->st_shndx = hh->st_shndx; | |
15bda425 JL |
1930 | } |
1931 | ||
6e0b88f1 | 1932 | return 1; |
15bda425 JL |
1933 | } |
1934 | ||
1935 | /* Finish up dynamic symbol handling. We set the contents of various | |
1936 | dynamic sections here. */ | |
1937 | ||
b34976b6 | 1938 | static bfd_boolean |
813c8a3c DA |
1939 | elf64_hppa_finish_dynamic_symbol (bfd *output_bfd, |
1940 | struct bfd_link_info *info, | |
a03bd320 | 1941 | struct elf_link_hash_entry *eh, |
813c8a3c | 1942 | Elf_Internal_Sym *sym) |
15bda425 | 1943 | { |
a03bd320 | 1944 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
c7e2358a | 1945 | asection *stub, *splt, *sopd, *spltrel; |
15bda425 | 1946 | struct elf64_hppa_link_hash_table *hppa_info; |
15bda425 | 1947 | |
a03bd320 | 1948 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
1949 | if (hppa_info == NULL) |
1950 | return FALSE; | |
15bda425 JL |
1951 | |
1952 | stub = hppa_info->stub_sec; | |
1953 | splt = hppa_info->plt_sec; | |
15bda425 JL |
1954 | sopd = hppa_info->opd_sec; |
1955 | spltrel = hppa_info->plt_rel_sec; | |
15bda425 | 1956 | |
15bda425 JL |
1957 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1958 | value when building the dynamic symbol table for a shared library. | |
1959 | At least for symbols that refer to functions. | |
1960 | ||
1961 | We will store a new value and section index into the symbol long | |
1962 | enough to output it into the dynamic symbol table, then we restore | |
1963 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
a03bd320 | 1964 | if (hh->want_opd) |
15bda425 | 1965 | { |
f12123c0 | 1966 | BFD_ASSERT (sopd != NULL); |
d663e1cd | 1967 | |
15bda425 JL |
1968 | /* Save away the original value and section index so that we |
1969 | can restore them later. */ | |
a03bd320 DA |
1970 | hh->st_value = sym->st_value; |
1971 | hh->st_shndx = sym->st_shndx; | |
15bda425 JL |
1972 | |
1973 | /* For the dynamic symbol table entry, we want the value to be | |
1974 | address of this symbol's entry within the .opd section. */ | |
a03bd320 | 1975 | sym->st_value = (hh->opd_offset |
15bda425 JL |
1976 | + sopd->output_offset |
1977 | + sopd->output_section->vma); | |
1978 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
1979 | sopd->output_section); | |
1980 | } | |
1981 | ||
1982 | /* Initialize a .plt entry if requested. */ | |
a03bd320 DA |
1983 | if (hh->want_plt |
1984 | && elf64_hppa_dynamic_symbol_p (eh, info)) | |
15bda425 JL |
1985 | { |
1986 | bfd_vma value; | |
1987 | Elf_Internal_Rela rel; | |
947216bf | 1988 | bfd_byte *loc; |
15bda425 | 1989 | |
f12123c0 | 1990 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
d663e1cd | 1991 | |
15bda425 JL |
1992 | /* We do not actually care about the value in the PLT entry |
1993 | if we are creating a shared library and the symbol is | |
1994 | still undefined, we create a dynamic relocation to fill | |
1995 | in the correct value. */ | |
0e1862bb | 1996 | if (bfd_link_pic (info) && eh->root.type == bfd_link_hash_undefined) |
15bda425 JL |
1997 | value = 0; |
1998 | else | |
a03bd320 | 1999 | value = (eh->root.u.def.value + eh->root.u.def.section->vma); |
15bda425 | 2000 | |
fe8bc63d | 2001 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
2002 | |
2003 | The format of a plt entry is | |
fe8bc63d | 2004 | <funcaddr> <__gp>. |
15bda425 JL |
2005 | |
2006 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 2007 | install the PLT entry. |
15bda425 JL |
2008 | |
2009 | We are modifying the in-memory PLT contents here, so we do not add | |
2010 | in the output_offset of the PLT section. */ | |
2011 | ||
a03bd320 | 2012 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset); |
586338b8 | 2013 | value = _bfd_get_gp_value (info->output_bfd); |
a03bd320 | 2014 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset + 0x8); |
15bda425 JL |
2015 | |
2016 | /* Create a dynamic IPLT relocation for this entry. | |
2017 | ||
2018 | We are creating a relocation in the output file's PLT section, | |
2019 | which is included within the DLT secton. So we do need to include | |
2020 | the PLT's output_offset in the computation of the relocation's | |
2021 | address. */ | |
a03bd320 | 2022 | rel.r_offset = (hh->plt_offset + splt->output_offset |
15bda425 | 2023 | + splt->output_section->vma); |
a03bd320 | 2024 | rel.r_info = ELF64_R_INFO (hh->eh.dynindx, R_PARISC_IPLT); |
15bda425 JL |
2025 | rel.r_addend = 0; |
2026 | ||
947216bf AM |
2027 | loc = spltrel->contents; |
2028 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
586338b8 | 2029 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 JL |
2030 | } |
2031 | ||
2032 | /* Initialize an external call stub entry if requested. */ | |
a03bd320 DA |
2033 | if (hh->want_stub |
2034 | && elf64_hppa_dynamic_symbol_p (eh, info)) | |
15bda425 JL |
2035 | { |
2036 | bfd_vma value; | |
2037 | int insn; | |
b352eebf | 2038 | unsigned int max_offset; |
15bda425 | 2039 | |
f12123c0 | 2040 | BFD_ASSERT (stub != NULL); |
d663e1cd | 2041 | |
15bda425 JL |
2042 | /* Install the generic stub template. |
2043 | ||
2044 | We are modifying the contents of the stub section, so we do not | |
2045 | need to include the stub section's output_offset here. */ | |
a03bd320 | 2046 | memcpy (stub->contents + hh->stub_offset, plt_stub, sizeof (plt_stub)); |
15bda425 JL |
2047 | |
2048 | /* Fix up the first ldd instruction. | |
2049 | ||
2050 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2051 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2052 | |
2053 | Note the plt_offset value is the value of the PLT entry relative to | |
2054 | the start of the PLT section. These instructions will reference | |
2055 | data relative to the value of __gp, which may not necessarily have | |
2056 | the same address as the start of the PLT section. | |
2057 | ||
2058 | gp_offset contains the offset of __gp within the PLT section. */ | |
a03bd320 | 2059 | value = hh->plt_offset - hppa_info->gp_offset; |
fe8bc63d | 2060 | |
a03bd320 | 2061 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset); |
b352eebf AM |
2062 | if (output_bfd->arch_info->mach >= 25) |
2063 | { | |
2064 | /* Wide mode allows 16 bit offsets. */ | |
2065 | max_offset = 32768; | |
2066 | insn &= ~ 0xfff1; | |
dc810e39 | 2067 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2068 | } |
2069 | else | |
2070 | { | |
2071 | max_offset = 8192; | |
2072 | insn &= ~ 0x3ff1; | |
dc810e39 | 2073 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2074 | } |
2075 | ||
2076 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2077 | { | |
4eca0228 | 2078 | _bfd_error_handler |
695344c0 | 2079 | /* xgettext:c-format */ |
2dcf00ce AM |
2080 | (_("stub entry for %s cannot load .plt, dp offset = %" PRId64), |
2081 | hh->eh.root.root.string, (int64_t) value); | |
b34976b6 | 2082 | return FALSE; |
b352eebf AM |
2083 | } |
2084 | ||
dc810e39 | 2085 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
a03bd320 | 2086 | stub->contents + hh->stub_offset); |
15bda425 JL |
2087 | |
2088 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2089 | value += 8; |
a03bd320 | 2090 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset + 8); |
b352eebf AM |
2091 | if (output_bfd->arch_info->mach >= 25) |
2092 | { | |
2093 | insn &= ~ 0xfff1; | |
dc810e39 | 2094 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2095 | } |
2096 | else | |
2097 | { | |
2098 | insn &= ~ 0x3ff1; | |
dc810e39 | 2099 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2100 | } |
dc810e39 | 2101 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
a03bd320 | 2102 | stub->contents + hh->stub_offset + 8); |
15bda425 JL |
2103 | } |
2104 | ||
b34976b6 | 2105 | return TRUE; |
15bda425 JL |
2106 | } |
2107 | ||
2108 | /* The .opd section contains FPTRs for each function this file | |
2109 | exports. Initialize the FPTR entries. */ | |
2110 | ||
b34976b6 | 2111 | static bfd_boolean |
a03bd320 | 2112 | elf64_hppa_finalize_opd (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 2113 | { |
a03bd320 | 2114 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2115 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2116 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 JL |
2117 | asection *sopd; |
2118 | asection *sopdrel; | |
2119 | ||
a03bd320 | 2120 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2121 | if (hppa_info == NULL) |
2122 | return FALSE; | |
2123 | ||
15bda425 JL |
2124 | sopd = hppa_info->opd_sec; |
2125 | sopdrel = hppa_info->opd_rel_sec; | |
2126 | ||
a03bd320 | 2127 | if (hh->want_opd) |
15bda425 JL |
2128 | { |
2129 | bfd_vma value; | |
2130 | ||
fe8bc63d | 2131 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2132 | |
2133 | We are modifying the contents of the OPD section in memory, so we | |
2134 | do not need to include its output offset in this computation. */ | |
a03bd320 | 2135 | memset (sopd->contents + hh->opd_offset, 0, 16); |
15bda425 | 2136 | |
a03bd320 DA |
2137 | value = (eh->root.u.def.value |
2138 | + eh->root.u.def.section->output_section->vma | |
2139 | + eh->root.u.def.section->output_offset); | |
15bda425 JL |
2140 | |
2141 | /* The next word is the address of the function. */ | |
a03bd320 | 2142 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 16); |
15bda425 JL |
2143 | |
2144 | /* The last word is our local __gp value. */ | |
586338b8 | 2145 | value = _bfd_get_gp_value (info->output_bfd); |
a03bd320 | 2146 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 24); |
15bda425 JL |
2147 | } |
2148 | ||
2149 | /* If we are generating a shared library, we must generate EPLT relocations | |
2150 | for each entry in the .opd, even for static functions (they may have | |
2151 | had their address taken). */ | |
0e1862bb | 2152 | if (bfd_link_pic (info) && hh->want_opd) |
15bda425 | 2153 | { |
947216bf AM |
2154 | Elf_Internal_Rela rel; |
2155 | bfd_byte *loc; | |
15bda425 JL |
2156 | int dynindx; |
2157 | ||
2158 | /* We may need to do a relocation against a local symbol, in | |
2159 | which case we have to look up it's dynamic symbol index off | |
2160 | the local symbol hash table. */ | |
a03bd320 DA |
2161 | if (eh->dynindx != -1) |
2162 | dynindx = eh->dynindx; | |
15bda425 JL |
2163 | else |
2164 | dynindx | |
a03bd320 DA |
2165 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2166 | hh->sym_indx); | |
15bda425 JL |
2167 | |
2168 | /* The offset of this relocation is the absolute address of the | |
2169 | .opd entry for this symbol. */ | |
a03bd320 | 2170 | rel.r_offset = (hh->opd_offset + sopd->output_offset |
15bda425 JL |
2171 | + sopd->output_section->vma); |
2172 | ||
2173 | /* If H is non-null, then we have an external symbol. | |
2174 | ||
2175 | It is imperative that we use a different dynamic symbol for the | |
2176 | EPLT relocation if the symbol has global scope. | |
2177 | ||
2178 | In the dynamic symbol table, the function symbol will have a value | |
2179 | which is address of the function's .opd entry. | |
2180 | ||
2181 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2182 | (if we did, the data in the .opd would reference itself rather | |
2183 | than the actual address of the function). Instead we have to use | |
2184 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2185 | function symbol. |
15bda425 JL |
2186 | |
2187 | We prefix the original symbol with a "." and use the new symbol in | |
2188 | the EPLT relocation. This new symbol has already been recorded in | |
2189 | the symbol table, we just have to look it up and use it. | |
2190 | ||
2191 | We do not have such problems with static functions because we do | |
2192 | not make their addresses in the dynamic symbol table point to | |
2193 | the .opd entry. Ultimately this should be safe since a static | |
2194 | function can not be directly referenced outside of its shared | |
2195 | library. | |
2196 | ||
2197 | We do have to play similar games for FPTR relocations in shared | |
2198 | libraries, including those for static symbols. See the FPTR | |
2199 | handling in elf64_hppa_finalize_dynreloc. */ | |
a03bd320 | 2200 | if (eh) |
15bda425 JL |
2201 | { |
2202 | char *new_name; | |
2203 | struct elf_link_hash_entry *nh; | |
2204 | ||
e1fa0163 | 2205 | new_name = concat (".", eh->root.root.string, NULL); |
15bda425 JL |
2206 | |
2207 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
adfef0bd | 2208 | new_name, TRUE, TRUE, FALSE); |
68ffbac6 | 2209 | |
15bda425 JL |
2210 | /* All we really want from the new symbol is its dynamic |
2211 | symbol index. */ | |
7fb9f789 NC |
2212 | if (nh) |
2213 | dynindx = nh->dynindx; | |
e1fa0163 | 2214 | free (new_name); |
15bda425 JL |
2215 | } |
2216 | ||
2217 | rel.r_addend = 0; | |
2218 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2219 | ||
947216bf AM |
2220 | loc = sopdrel->contents; |
2221 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
586338b8 | 2222 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 | 2223 | } |
b34976b6 | 2224 | return TRUE; |
15bda425 JL |
2225 | } |
2226 | ||
2227 | /* The .dlt section contains addresses for items referenced through the | |
2228 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2229 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2230 | ||
b34976b6 | 2231 | static bfd_boolean |
a03bd320 | 2232 | elf64_hppa_finalize_dlt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 2233 | { |
a03bd320 | 2234 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2235 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2236 | struct elf64_hppa_link_hash_table *hppa_info; | |
2237 | asection *sdlt, *sdltrel; | |
15bda425 | 2238 | |
a03bd320 | 2239 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2240 | if (hppa_info == NULL) |
2241 | return FALSE; | |
15bda425 JL |
2242 | |
2243 | sdlt = hppa_info->dlt_sec; | |
2244 | sdltrel = hppa_info->dlt_rel_sec; | |
2245 | ||
2246 | /* H/DYN_H may refer to a local variable and we know it's | |
2247 | address, so there is no need to create a relocation. Just install | |
2248 | the proper value into the DLT, note this shortcut can not be | |
2249 | skipped when building a shared library. */ | |
0e1862bb | 2250 | if (! bfd_link_pic (info) && hh && hh->want_dlt) |
15bda425 JL |
2251 | { |
2252 | bfd_vma value; | |
2253 | ||
2254 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2255 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2256 | |
2257 | We include the OPD's output offset in this computation as | |
2258 | we are referring to an absolute address in the resulting | |
2259 | object file. */ | |
a03bd320 | 2260 | if (hh->want_opd) |
15bda425 | 2261 | { |
a03bd320 | 2262 | value = (hh->opd_offset |
15bda425 JL |
2263 | + hppa_info->opd_sec->output_offset |
2264 | + hppa_info->opd_sec->output_section->vma); | |
2265 | } | |
a03bd320 DA |
2266 | else if ((eh->root.type == bfd_link_hash_defined |
2267 | || eh->root.type == bfd_link_hash_defweak) | |
2268 | && eh->root.u.def.section) | |
15bda425 | 2269 | { |
a03bd320 DA |
2270 | value = eh->root.u.def.value + eh->root.u.def.section->output_offset; |
2271 | if (eh->root.u.def.section->output_section) | |
2272 | value += eh->root.u.def.section->output_section->vma; | |
15bda425 | 2273 | else |
a03bd320 | 2274 | value += eh->root.u.def.section->vma; |
15bda425 | 2275 | } |
3db4b612 JL |
2276 | else |
2277 | /* We have an undefined function reference. */ | |
2278 | value = 0; | |
15bda425 JL |
2279 | |
2280 | /* We do not need to include the output offset of the DLT section | |
2281 | here because we are modifying the in-memory contents. */ | |
a03bd320 | 2282 | bfd_put_64 (sdlt->owner, value, sdlt->contents + hh->dlt_offset); |
15bda425 JL |
2283 | } |
2284 | ||
4cc11e76 | 2285 | /* Create a relocation for the DLT entry associated with this symbol. |
15bda425 | 2286 | When building a shared library the symbol does not have to be dynamic. */ |
a03bd320 | 2287 | if (hh->want_dlt |
0e1862bb | 2288 | && (elf64_hppa_dynamic_symbol_p (eh, info) || bfd_link_pic (info))) |
15bda425 | 2289 | { |
947216bf AM |
2290 | Elf_Internal_Rela rel; |
2291 | bfd_byte *loc; | |
15bda425 JL |
2292 | int dynindx; |
2293 | ||
2294 | /* We may need to do a relocation against a local symbol, in | |
2295 | which case we have to look up it's dynamic symbol index off | |
2296 | the local symbol hash table. */ | |
a03bd320 DA |
2297 | if (eh && eh->dynindx != -1) |
2298 | dynindx = eh->dynindx; | |
15bda425 JL |
2299 | else |
2300 | dynindx | |
a03bd320 DA |
2301 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2302 | hh->sym_indx); | |
15bda425 | 2303 | |
15bda425 JL |
2304 | /* Create a dynamic relocation for this entry. Do include the output |
2305 | offset of the DLT entry since we need an absolute address in the | |
2306 | resulting object file. */ | |
a03bd320 | 2307 | rel.r_offset = (hh->dlt_offset + sdlt->output_offset |
15bda425 | 2308 | + sdlt->output_section->vma); |
a03bd320 | 2309 | if (eh && eh->type == STT_FUNC) |
15bda425 JL |
2310 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); |
2311 | else | |
2312 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2313 | rel.r_addend = 0; | |
2314 | ||
947216bf AM |
2315 | loc = sdltrel->contents; |
2316 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
586338b8 | 2317 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 | 2318 | } |
b34976b6 | 2319 | return TRUE; |
15bda425 JL |
2320 | } |
2321 | ||
2322 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2323 | for dynamic functions used to initialize static data. */ | |
2324 | ||
b34976b6 | 2325 | static bfd_boolean |
a03bd320 | 2326 | elf64_hppa_finalize_dynreloc (struct elf_link_hash_entry *eh, |
813c8a3c | 2327 | void *data) |
15bda425 | 2328 | { |
a03bd320 | 2329 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2330 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2331 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 JL |
2332 | int dynamic_symbol; |
2333 | ||
a03bd320 | 2334 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, info); |
15bda425 | 2335 | |
0e1862bb | 2336 | if (!dynamic_symbol && !bfd_link_pic (info)) |
b34976b6 | 2337 | return TRUE; |
15bda425 | 2338 | |
a03bd320 | 2339 | if (hh->reloc_entries) |
15bda425 JL |
2340 | { |
2341 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2342 | int dynindx; | |
2343 | ||
a03bd320 | 2344 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2345 | if (hppa_info == NULL) |
2346 | return FALSE; | |
15bda425 JL |
2347 | |
2348 | /* We may need to do a relocation against a local symbol, in | |
2349 | which case we have to look up it's dynamic symbol index off | |
2350 | the local symbol hash table. */ | |
a03bd320 DA |
2351 | if (eh->dynindx != -1) |
2352 | dynindx = eh->dynindx; | |
15bda425 JL |
2353 | else |
2354 | dynindx | |
a03bd320 DA |
2355 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2356 | hh->sym_indx); | |
15bda425 | 2357 | |
a03bd320 | 2358 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
15bda425 | 2359 | { |
947216bf AM |
2360 | Elf_Internal_Rela rel; |
2361 | bfd_byte *loc; | |
15bda425 | 2362 | |
d663e1cd JL |
2363 | /* Allocate one iff we are building a shared library, the relocation |
2364 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
0e1862bb L |
2365 | if (!bfd_link_pic (info) |
2366 | && rent->type == R_PARISC_FPTR64 && hh->want_opd) | |
d663e1cd | 2367 | continue; |
15bda425 | 2368 | |
fe8bc63d | 2369 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2370 | |
2371 | We need the output offset for the reloc's section because | |
2372 | we are creating an absolute address in the resulting object | |
2373 | file. */ | |
2374 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2375 | + rent->sec->output_section->vma); | |
2376 | ||
2377 | /* An FPTR64 relocation implies that we took the address of | |
2378 | a function and that the function has an entry in the .opd | |
2379 | section. We want the FPTR64 relocation to reference the | |
2380 | entry in .opd. | |
2381 | ||
2382 | We could munge the symbol value in the dynamic symbol table | |
2383 | (in fact we already do for functions with global scope) to point | |
2384 | to the .opd entry. Then we could use that dynamic symbol in | |
2385 | this relocation. | |
2386 | ||
2387 | Or we could do something sensible, not munge the symbol's | |
2388 | address and instead just use a different symbol to reference | |
2389 | the .opd entry. At least that seems sensible until you | |
2390 | realize there's no local dynamic symbols we can use for that | |
2391 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2392 | |
15bda425 JL |
2393 | We use a section symbol recorded by check_relocs as the |
2394 | base symbol for the relocation. The addend is the difference | |
2395 | between the section symbol and the address of the .opd entry. */ | |
0e1862bb L |
2396 | if (bfd_link_pic (info) |
2397 | && rent->type == R_PARISC_FPTR64 && hh->want_opd) | |
15bda425 JL |
2398 | { |
2399 | bfd_vma value, value2; | |
15bda425 JL |
2400 | |
2401 | /* First compute the address of the opd entry for this symbol. */ | |
a03bd320 | 2402 | value = (hh->opd_offset |
15bda425 JL |
2403 | + hppa_info->opd_sec->output_section->vma |
2404 | + hppa_info->opd_sec->output_offset); | |
2405 | ||
2406 | /* Compute the value of the start of the section with | |
2407 | the relocation. */ | |
2408 | value2 = (rent->sec->output_section->vma | |
2409 | + rent->sec->output_offset); | |
2410 | ||
2411 | /* Compute the difference between the start of the section | |
2412 | with the relocation and the opd entry. */ | |
2413 | value -= value2; | |
fe8bc63d | 2414 | |
15bda425 JL |
2415 | /* The result becomes the addend of the relocation. */ |
2416 | rel.r_addend = value; | |
2417 | ||
2418 | /* The section symbol becomes the symbol for the dynamic | |
2419 | relocation. */ | |
2420 | dynindx | |
2421 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2422 | rent->sec->owner, | |
2423 | rent->sec_symndx); | |
2424 | } | |
2425 | else | |
2426 | rel.r_addend = rent->addend; | |
2427 | ||
2428 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2429 | ||
947216bf AM |
2430 | loc = hppa_info->other_rel_sec->contents; |
2431 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2432 | * sizeof (Elf64_External_Rela)); | |
586338b8 | 2433 | bfd_elf64_swap_reloca_out (info->output_bfd, &rel, loc); |
15bda425 JL |
2434 | } |
2435 | } | |
2436 | ||
b34976b6 | 2437 | return TRUE; |
15bda425 JL |
2438 | } |
2439 | ||
5ac81c74 JL |
2440 | /* Used to decide how to sort relocs in an optimal manner for the |
2441 | dynamic linker, before writing them out. */ | |
2442 | ||
2443 | static enum elf_reloc_type_class | |
7e612e98 AM |
2444 | elf64_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2445 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2446 | const Elf_Internal_Rela *rela) | |
5ac81c74 | 2447 | { |
cf35638d | 2448 | if (ELF64_R_SYM (rela->r_info) == STN_UNDEF) |
5ac81c74 JL |
2449 | return reloc_class_relative; |
2450 | ||
2451 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2452 | { | |
2453 | case R_PARISC_IPLT: | |
2454 | return reloc_class_plt; | |
2455 | case R_PARISC_COPY: | |
2456 | return reloc_class_copy; | |
2457 | default: | |
2458 | return reloc_class_normal; | |
2459 | } | |
2460 | } | |
2461 | ||
15bda425 JL |
2462 | /* Finish up the dynamic sections. */ |
2463 | ||
b34976b6 | 2464 | static bfd_boolean |
813c8a3c DA |
2465 | elf64_hppa_finish_dynamic_sections (bfd *output_bfd, |
2466 | struct bfd_link_info *info) | |
15bda425 JL |
2467 | { |
2468 | bfd *dynobj; | |
2469 | asection *sdyn; | |
2470 | struct elf64_hppa_link_hash_table *hppa_info; | |
2471 | ||
a03bd320 | 2472 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2473 | if (hppa_info == NULL) |
2474 | return FALSE; | |
15bda425 JL |
2475 | |
2476 | /* Finalize the contents of the .opd section. */ | |
a03bd320 DA |
2477 | elf_link_hash_traverse (elf_hash_table (info), |
2478 | elf64_hppa_finalize_opd, | |
2479 | info); | |
15bda425 | 2480 | |
a03bd320 DA |
2481 | elf_link_hash_traverse (elf_hash_table (info), |
2482 | elf64_hppa_finalize_dynreloc, | |
2483 | info); | |
15bda425 JL |
2484 | |
2485 | /* Finalize the contents of the .dlt section. */ | |
2486 | dynobj = elf_hash_table (info)->dynobj; | |
2487 | /* Finalize the contents of the .dlt section. */ | |
a03bd320 DA |
2488 | elf_link_hash_traverse (elf_hash_table (info), |
2489 | elf64_hppa_finalize_dlt, | |
2490 | info); | |
15bda425 | 2491 | |
3d4d4302 | 2492 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
15bda425 JL |
2493 | |
2494 | if (elf_hash_table (info)->dynamic_sections_created) | |
2495 | { | |
2496 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2497 | |
2498 | BFD_ASSERT (sdyn != NULL); | |
2499 | ||
2500 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 2501 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
15bda425 JL |
2502 | for (; dyncon < dynconend; dyncon++) |
2503 | { | |
2504 | Elf_Internal_Dyn dyn; | |
2505 | asection *s; | |
2506 | ||
2507 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2508 | ||
2509 | switch (dyn.d_tag) | |
2510 | { | |
2511 | default: | |
2512 | break; | |
2513 | ||
2514 | case DT_HP_LOAD_MAP: | |
2515 | /* Compute the absolute address of 16byte scratchpad area | |
2516 | for the dynamic linker. | |
2517 | ||
2518 | By convention the linker script will allocate the scratchpad | |
2519 | area at the start of the .data section. So all we have to | |
2520 | to is find the start of the .data section. */ | |
2521 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
a505d7ac MR |
2522 | if (!s) |
2523 | return FALSE; | |
15bda425 JL |
2524 | dyn.d_un.d_ptr = s->vma; |
2525 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2526 | break; | |
2527 | ||
2528 | case DT_PLTGOT: | |
2529 | /* HP's use PLTGOT to set the GOT register. */ | |
2530 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2531 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2532 | break; | |
2533 | ||
2534 | case DT_JMPREL: | |
2535 | s = hppa_info->plt_rel_sec; | |
2536 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2537 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2538 | break; | |
2539 | ||
2540 | case DT_PLTRELSZ: | |
2541 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2542 | dyn.d_un.d_val = s->size; |
15bda425 JL |
2543 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2544 | break; | |
2545 | ||
2546 | case DT_RELA: | |
2547 | s = hppa_info->other_rel_sec; | |
eea6121a | 2548 | if (! s || ! s->size) |
15bda425 | 2549 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2550 | if (! s || ! s->size) |
5ac81c74 | 2551 | s = hppa_info->opd_rel_sec; |
15bda425 JL |
2552 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2553 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2554 | break; | |
2555 | ||
2556 | case DT_RELASZ: | |
2557 | s = hppa_info->other_rel_sec; | |
eea6121a | 2558 | dyn.d_un.d_val = s->size; |
15bda425 | 2559 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2560 | dyn.d_un.d_val += s->size; |
15bda425 | 2561 | s = hppa_info->opd_rel_sec; |
eea6121a | 2562 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2563 | /* There is some question about whether or not the size of |
2564 | the PLT relocs should be included here. HP's tools do | |
2565 | it, so we'll emulate them. */ | |
2566 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2567 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2568 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2569 | break; | |
2570 | ||
2571 | } | |
2572 | } | |
2573 | } | |
2574 | ||
b34976b6 | 2575 | return TRUE; |
15bda425 JL |
2576 | } |
2577 | ||
235ecfbc NC |
2578 | /* Support for core dump NOTE sections. */ |
2579 | ||
2580 | static bfd_boolean | |
2581 | elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2582 | { | |
2583 | int offset; | |
2584 | size_t size; | |
2585 | ||
2586 | switch (note->descsz) | |
2587 | { | |
2588 | default: | |
2589 | return FALSE; | |
2590 | ||
2591 | case 760: /* Linux/hppa */ | |
2592 | /* pr_cursig */ | |
228e534f | 2593 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
235ecfbc NC |
2594 | |
2595 | /* pr_pid */ | |
228e534f | 2596 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
235ecfbc NC |
2597 | |
2598 | /* pr_reg */ | |
2599 | offset = 112; | |
2600 | size = 640; | |
2601 | ||
2602 | break; | |
2603 | } | |
2604 | ||
2605 | /* Make a ".reg/999" section. */ | |
2606 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2607 | size, note->descpos + offset); | |
2608 | } | |
2609 | ||
2610 | static bfd_boolean | |
2611 | elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2612 | { | |
2613 | char * command; | |
2614 | int n; | |
2615 | ||
2616 | switch (note->descsz) | |
2617 | { | |
2618 | default: | |
2619 | return FALSE; | |
2620 | ||
2621 | case 136: /* Linux/hppa elf_prpsinfo. */ | |
228e534f | 2622 | elf_tdata (abfd)->core->program |
235ecfbc | 2623 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2624 | elf_tdata (abfd)->core->command |
235ecfbc NC |
2625 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2626 | } | |
2627 | ||
2628 | /* Note that for some reason, a spurious space is tacked | |
2629 | onto the end of the args in some (at least one anyway) | |
2630 | implementations, so strip it off if it exists. */ | |
228e534f | 2631 | command = elf_tdata (abfd)->core->command; |
235ecfbc NC |
2632 | n = strlen (command); |
2633 | ||
2634 | if (0 < n && command[n - 1] == ' ') | |
2635 | command[n - 1] = '\0'; | |
2636 | ||
2637 | return TRUE; | |
2638 | } | |
2639 | ||
15bda425 JL |
2640 | /* Return the number of additional phdrs we will need. |
2641 | ||
2642 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2643 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2644 | |
2645 | This routine indicates that the backend needs one additional program | |
2646 | header for that case. | |
2647 | ||
2648 | Note we do not have access to the link info structure here, so we have | |
2649 | to guess whether or not we are building a shared library based on the | |
2650 | existence of a .interp section. */ | |
2651 | ||
2652 | static int | |
a6b96beb | 2653 | elf64_hppa_additional_program_headers (bfd *abfd, |
813c8a3c | 2654 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
15bda425 JL |
2655 | { |
2656 | asection *s; | |
2657 | ||
2658 | /* If we are creating a shared library, then we have to create a | |
2659 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2660 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2661 | if (! s) | |
2662 | return 1; | |
2663 | return 0; | |
2664 | } | |
2665 | ||
1a9ccd70 NC |
2666 | static bfd_boolean |
2667 | elf64_hppa_allow_non_load_phdr (bfd *abfd ATTRIBUTE_UNUSED, | |
2668 | const Elf_Internal_Phdr *phdr ATTRIBUTE_UNUSED, | |
2669 | unsigned int count ATTRIBUTE_UNUSED) | |
2670 | { | |
2671 | return TRUE; | |
2672 | } | |
2673 | ||
15bda425 JL |
2674 | /* Allocate and initialize any program headers required by this |
2675 | specific backend. | |
2676 | ||
2677 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2678 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2679 | |
2680 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2681 | for the HP linker. |
15bda425 JL |
2682 | |
2683 | Note we do not have access to the link info structure here, so we have | |
2684 | to guess whether or not we are building a shared library based on the | |
2685 | existence of a .interp section. */ | |
2686 | ||
b34976b6 | 2687 | static bfd_boolean |
22b05d33 | 2688 | elf64_hppa_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
15bda425 | 2689 | { |
edd21aca | 2690 | struct elf_segment_map *m; |
15bda425 | 2691 | |
22b05d33 AM |
2692 | m = elf_seg_map (abfd); |
2693 | if (info != NULL && !info->user_phdrs && m != NULL && m->p_type != PT_PHDR) | |
15bda425 | 2694 | { |
22b05d33 AM |
2695 | m = ((struct elf_segment_map *) |
2696 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2697 | if (m == NULL) |
22b05d33 | 2698 | return FALSE; |
15bda425 | 2699 | |
22b05d33 AM |
2700 | m->p_type = PT_PHDR; |
2701 | m->p_flags = PF_R | PF_X; | |
2702 | m->p_flags_valid = 1; | |
2703 | m->p_paddr_valid = 1; | |
2704 | m->includes_phdrs = 1; | |
15bda425 | 2705 | |
22b05d33 AM |
2706 | m->next = elf_seg_map (abfd); |
2707 | elf_seg_map (abfd) = m; | |
15bda425 JL |
2708 | } |
2709 | ||
22b05d33 | 2710 | for (m = elf_seg_map (abfd) ; m != NULL; m = m->next) |
15bda425 JL |
2711 | if (m->p_type == PT_LOAD) |
2712 | { | |
0ba2a60e | 2713 | unsigned int i; |
15bda425 JL |
2714 | |
2715 | for (i = 0; i < m->count; i++) | |
2716 | { | |
2717 | /* The code "hint" is not really a hint. It is a requirement | |
2718 | for certain versions of the HP dynamic linker. Worse yet, | |
2719 | it must be set even if the shared library does not have | |
2720 | any code in its "text" segment (thus the check for .hash | |
2721 | to catch this situation). */ | |
2722 | if (m->sections[i]->flags & SEC_CODE | |
2723 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2724 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2725 | } | |
2726 | } | |
2727 | ||
b34976b6 | 2728 | return TRUE; |
15bda425 JL |
2729 | } |
2730 | ||
3fab46d0 AM |
2731 | /* Called when writing out an object file to decide the type of a |
2732 | symbol. */ | |
2733 | static int | |
813c8a3c DA |
2734 | elf64_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, |
2735 | int type) | |
3fab46d0 AM |
2736 | { |
2737 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2738 | return STT_PARISC_MILLI; | |
2739 | else | |
2740 | return type; | |
2741 | } | |
2742 | ||
d97a8924 | 2743 | /* Support HP specific sections for core files. */ |
91d6fa6a | 2744 | |
d97a8924 | 2745 | static bfd_boolean |
91d6fa6a | 2746 | elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int sec_index, |
d97a8924 DA |
2747 | const char *typename) |
2748 | { | |
927e625f MK |
2749 | if (hdr->p_type == PT_HP_CORE_KERNEL) |
2750 | { | |
2751 | asection *sect; | |
2752 | ||
91d6fa6a | 2753 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
927e625f MK |
2754 | return FALSE; |
2755 | ||
2756 | sect = bfd_make_section_anyway (abfd, ".kernel"); | |
2757 | if (sect == NULL) | |
2758 | return FALSE; | |
2759 | sect->size = hdr->p_filesz; | |
2760 | sect->filepos = hdr->p_offset; | |
2761 | sect->flags = SEC_HAS_CONTENTS | SEC_READONLY; | |
2762 | return TRUE; | |
2763 | } | |
2764 | ||
d97a8924 DA |
2765 | if (hdr->p_type == PT_HP_CORE_PROC) |
2766 | { | |
2767 | int sig; | |
2768 | ||
2769 | if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0) | |
2770 | return FALSE; | |
2771 | if (bfd_bread (&sig, 4, abfd) != 4) | |
2772 | return FALSE; | |
2773 | ||
228e534f | 2774 | elf_tdata (abfd)->core->signal = sig; |
d97a8924 | 2775 | |
91d6fa6a | 2776 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
d97a8924 | 2777 | return FALSE; |
927e625f MK |
2778 | |
2779 | /* GDB uses the ".reg" section to read register contents. */ | |
2780 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz, | |
2781 | hdr->p_offset); | |
d97a8924 DA |
2782 | } |
2783 | ||
2784 | if (hdr->p_type == PT_HP_CORE_LOADABLE | |
2785 | || hdr->p_type == PT_HP_CORE_STACK | |
2786 | || hdr->p_type == PT_HP_CORE_MMF) | |
2787 | hdr->p_type = PT_LOAD; | |
2788 | ||
91d6fa6a | 2789 | return _bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename); |
d97a8924 DA |
2790 | } |
2791 | ||
5887528b DA |
2792 | /* Hook called by the linker routine which adds symbols from an object |
2793 | file. HP's libraries define symbols with HP specific section | |
2794 | indices, which we have to handle. */ | |
2795 | ||
2796 | static bfd_boolean | |
2797 | elf_hppa_add_symbol_hook (bfd *abfd, | |
2798 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2799 | Elf_Internal_Sym *sym, | |
2800 | const char **namep ATTRIBUTE_UNUSED, | |
2801 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2802 | asection **secp, | |
2803 | bfd_vma *valp) | |
2804 | { | |
91d6fa6a | 2805 | unsigned int sec_index = sym->st_shndx; |
5887528b | 2806 | |
91d6fa6a | 2807 | switch (sec_index) |
5887528b DA |
2808 | { |
2809 | case SHN_PARISC_ANSI_COMMON: | |
2810 | *secp = bfd_make_section_old_way (abfd, ".PARISC.ansi.common"); | |
2811 | (*secp)->flags |= SEC_IS_COMMON; | |
2812 | *valp = sym->st_size; | |
2813 | break; | |
2814 | ||
2815 | case SHN_PARISC_HUGE_COMMON: | |
2816 | *secp = bfd_make_section_old_way (abfd, ".PARISC.huge.common"); | |
2817 | (*secp)->flags |= SEC_IS_COMMON; | |
2818 | *valp = sym->st_size; | |
2819 | break; | |
2820 | } | |
2821 | ||
2822 | return TRUE; | |
2823 | } | |
2824 | ||
2825 | static bfd_boolean | |
2826 | elf_hppa_unmark_useless_dynamic_symbols (struct elf_link_hash_entry *h, | |
2827 | void *data) | |
2828 | { | |
2829 | struct bfd_link_info *info = data; | |
2830 | ||
5887528b DA |
2831 | /* If we are not creating a shared library, and this symbol is |
2832 | referenced by a shared library but is not defined anywhere, then | |
2833 | the generic code will warn that it is undefined. | |
2834 | ||
2835 | This behavior is undesirable on HPs since the standard shared | |
2836 | libraries contain references to undefined symbols. | |
2837 | ||
2838 | So we twiddle the flags associated with such symbols so that they | |
2839 | will not trigger the warning. ?!? FIXME. This is horribly fragile. | |
2840 | ||
2841 | Ultimately we should have better controls over the generic ELF BFD | |
2842 | linker code. */ | |
0e1862bb | 2843 | if (! bfd_link_relocatable (info) |
5887528b DA |
2844 | && info->unresolved_syms_in_shared_libs != RM_IGNORE |
2845 | && h->root.type == bfd_link_hash_undefined | |
2846 | && h->ref_dynamic | |
2847 | && !h->ref_regular) | |
2848 | { | |
2849 | h->ref_dynamic = 0; | |
2850 | h->pointer_equality_needed = 1; | |
2851 | } | |
2852 | ||
2853 | return TRUE; | |
2854 | } | |
2855 | ||
2856 | static bfd_boolean | |
2857 | elf_hppa_remark_useless_dynamic_symbols (struct elf_link_hash_entry *h, | |
2858 | void *data) | |
2859 | { | |
2860 | struct bfd_link_info *info = data; | |
2861 | ||
5887528b DA |
2862 | /* If we are not creating a shared library, and this symbol is |
2863 | referenced by a shared library but is not defined anywhere, then | |
2864 | the generic code will warn that it is undefined. | |
2865 | ||
2866 | This behavior is undesirable on HPs since the standard shared | |
2867 | libraries contain references to undefined symbols. | |
2868 | ||
2869 | So we twiddle the flags associated with such symbols so that they | |
2870 | will not trigger the warning. ?!? FIXME. This is horribly fragile. | |
2871 | ||
2872 | Ultimately we should have better controls over the generic ELF BFD | |
2873 | linker code. */ | |
0e1862bb | 2874 | if (! bfd_link_relocatable (info) |
5887528b DA |
2875 | && info->unresolved_syms_in_shared_libs != RM_IGNORE |
2876 | && h->root.type == bfd_link_hash_undefined | |
2877 | && !h->ref_dynamic | |
2878 | && !h->ref_regular | |
2879 | && h->pointer_equality_needed) | |
2880 | { | |
2881 | h->ref_dynamic = 1; | |
2882 | h->pointer_equality_needed = 0; | |
2883 | } | |
2884 | ||
2885 | return TRUE; | |
2886 | } | |
2887 | ||
2888 | static bfd_boolean | |
2889 | elf_hppa_is_dynamic_loader_symbol (const char *name) | |
2890 | { | |
2891 | return (! strcmp (name, "__CPU_REVISION") | |
2892 | || ! strcmp (name, "__CPU_KEYBITS_1") | |
2893 | || ! strcmp (name, "__SYSTEM_ID_D") | |
2894 | || ! strcmp (name, "__FPU_MODEL") | |
2895 | || ! strcmp (name, "__FPU_REVISION") | |
2896 | || ! strcmp (name, "__ARGC") | |
2897 | || ! strcmp (name, "__ARGV") | |
2898 | || ! strcmp (name, "__ENVP") | |
2899 | || ! strcmp (name, "__TLS_SIZE_D") | |
2900 | || ! strcmp (name, "__LOAD_INFO") | |
2901 | || ! strcmp (name, "__systab")); | |
2902 | } | |
2903 | ||
2904 | /* Record the lowest address for the data and text segments. */ | |
2905 | static void | |
2906 | elf_hppa_record_segment_addrs (bfd *abfd, | |
2907 | asection *section, | |
2908 | void *data) | |
2909 | { | |
2910 | struct elf64_hppa_link_hash_table *hppa_info = data; | |
2911 | ||
2912 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2913 | { | |
2914 | bfd_vma value; | |
2915 | Elf_Internal_Phdr *p; | |
2916 | ||
2917 | p = _bfd_elf_find_segment_containing_section (abfd, section->output_section); | |
2918 | BFD_ASSERT (p != NULL); | |
2919 | value = p->p_vaddr; | |
2920 | ||
2921 | if (section->flags & SEC_READONLY) | |
2922 | { | |
2923 | if (value < hppa_info->text_segment_base) | |
2924 | hppa_info->text_segment_base = value; | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | if (value < hppa_info->data_segment_base) | |
2929 | hppa_info->data_segment_base = value; | |
2930 | } | |
2931 | } | |
2932 | } | |
2933 | ||
2934 | /* Called after we have seen all the input files/sections, but before | |
2935 | final symbol resolution and section placement has been determined. | |
2936 | ||
2937 | We use this hook to (possibly) provide a value for __gp, then we | |
2938 | fall back to the generic ELF final link routine. */ | |
2939 | ||
2940 | static bfd_boolean | |
2941 | elf_hppa_final_link (bfd *abfd, struct bfd_link_info *info) | |
2942 | { | |
6d4b2867 | 2943 | struct stat buf; |
5887528b DA |
2944 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); |
2945 | ||
4dfe6ac6 NC |
2946 | if (hppa_info == NULL) |
2947 | return FALSE; | |
2948 | ||
0e1862bb | 2949 | if (! bfd_link_relocatable (info)) |
5887528b DA |
2950 | { |
2951 | struct elf_link_hash_entry *gp; | |
2952 | bfd_vma gp_val; | |
2953 | ||
2954 | /* The linker script defines a value for __gp iff it was referenced | |
2955 | by one of the objects being linked. First try to find the symbol | |
2956 | in the hash table. If that fails, just compute the value __gp | |
2957 | should have had. */ | |
2958 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
2959 | FALSE, FALSE); | |
2960 | ||
2961 | if (gp) | |
2962 | { | |
2963 | ||
2964 | /* Adjust the value of __gp as we may want to slide it into the | |
2965 | .plt section so that the stubs can access PLT entries without | |
2966 | using an addil sequence. */ | |
2967 | gp->root.u.def.value += hppa_info->gp_offset; | |
2968 | ||
2969 | gp_val = (gp->root.u.def.section->output_section->vma | |
2970 | + gp->root.u.def.section->output_offset | |
2971 | + gp->root.u.def.value); | |
2972 | } | |
2973 | else | |
2974 | { | |
2975 | asection *sec; | |
2976 | ||
2977 | /* First look for a .plt section. If found, then __gp is the | |
2978 | address of the .plt + gp_offset. | |
2979 | ||
2980 | If no .plt is found, then look for .dlt, .opd and .data (in | |
2981 | that order) and set __gp to the base address of whichever | |
2982 | section is found first. */ | |
2983 | ||
2984 | sec = hppa_info->plt_sec; | |
2985 | if (sec && ! (sec->flags & SEC_EXCLUDE)) | |
2986 | gp_val = (sec->output_offset | |
2987 | + sec->output_section->vma | |
2988 | + hppa_info->gp_offset); | |
2989 | else | |
2990 | { | |
2991 | sec = hppa_info->dlt_sec; | |
2992 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
2993 | sec = hppa_info->opd_sec; | |
2994 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
2995 | sec = bfd_get_section_by_name (abfd, ".data"); | |
2996 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
2997 | gp_val = 0; | |
2998 | else | |
2999 | gp_val = sec->output_offset + sec->output_section->vma; | |
3000 | } | |
3001 | } | |
3002 | ||
3003 | /* Install whatever value we found/computed for __gp. */ | |
3004 | _bfd_set_gp_value (abfd, gp_val); | |
3005 | } | |
3006 | ||
3007 | /* We need to know the base of the text and data segments so that we | |
3008 | can perform SEGREL relocations. We will record the base addresses | |
3009 | when we encounter the first SEGREL relocation. */ | |
3010 | hppa_info->text_segment_base = (bfd_vma)-1; | |
3011 | hppa_info->data_segment_base = (bfd_vma)-1; | |
3012 | ||
3013 | /* HP's shared libraries have references to symbols that are not | |
3014 | defined anywhere. The generic ELF BFD linker code will complain | |
3015 | about such symbols. | |
3016 | ||
3017 | So we detect the losing case and arrange for the flags on the symbol | |
3018 | to indicate that it was never referenced. This keeps the generic | |
3019 | ELF BFD link code happy and appears to not create any secondary | |
3020 | problems. Ultimately we need a way to control the behavior of the | |
3021 | generic ELF BFD link code better. */ | |
3022 | elf_link_hash_traverse (elf_hash_table (info), | |
3023 | elf_hppa_unmark_useless_dynamic_symbols, | |
3024 | info); | |
3025 | ||
3026 | /* Invoke the regular ELF backend linker to do all the work. */ | |
6d4b2867 JDA |
3027 | if (!bfd_elf_final_link (abfd, info)) |
3028 | return FALSE; | |
5887528b DA |
3029 | |
3030 | elf_link_hash_traverse (elf_hash_table (info), | |
3031 | elf_hppa_remark_useless_dynamic_symbols, | |
3032 | info); | |
3033 | ||
3034 | /* If we're producing a final executable, sort the contents of the | |
3035 | unwind section. */ | |
6d4b2867 JDA |
3036 | if (bfd_link_relocatable (info)) |
3037 | return TRUE; | |
3038 | ||
3039 | /* Do not attempt to sort non-regular files. This is here | |
3040 | especially for configure scripts and kernel builds which run | |
3041 | tests with "ld [...] -o /dev/null". */ | |
765cf5f6 | 3042 | if (stat (bfd_get_filename (abfd), &buf) != 0 |
6d4b2867 JDA |
3043 | || !S_ISREG(buf.st_mode)) |
3044 | return TRUE; | |
5887528b | 3045 | |
6d4b2867 | 3046 | return elf_hppa_sort_unwind (abfd); |
5887528b DA |
3047 | } |
3048 | ||
3049 | /* Relocate the given INSN. VALUE should be the actual value we want | |
3050 | to insert into the instruction, ie by this point we should not be | |
3051 | concerned with computing an offset relative to the DLT, PC, etc. | |
3052 | Instead this routine is meant to handle the bit manipulations needed | |
3053 | to insert the relocation into the given instruction. */ | |
3054 | ||
3055 | static int | |
3056 | elf_hppa_relocate_insn (int insn, int sym_value, unsigned int r_type) | |
3057 | { | |
3058 | switch (r_type) | |
3059 | { | |
3060 | /* This is any 22 bit branch. In PA2.0 syntax it corresponds to | |
3061 | the "B" instruction. */ | |
3062 | case R_PARISC_PCREL22F: | |
3063 | case R_PARISC_PCREL22C: | |
3064 | return (insn & ~0x3ff1ffd) | re_assemble_22 (sym_value); | |
3065 | ||
3066 | /* This is any 12 bit branch. */ | |
3067 | case R_PARISC_PCREL12F: | |
3068 | return (insn & ~0x1ffd) | re_assemble_12 (sym_value); | |
3069 | ||
3070 | /* This is any 17 bit branch. In PA2.0 syntax it also corresponds | |
3071 | to the "B" instruction as well as BE. */ | |
3072 | case R_PARISC_PCREL17F: | |
3073 | case R_PARISC_DIR17F: | |
3074 | case R_PARISC_DIR17R: | |
3075 | case R_PARISC_PCREL17C: | |
3076 | case R_PARISC_PCREL17R: | |
3077 | return (insn & ~0x1f1ffd) | re_assemble_17 (sym_value); | |
3078 | ||
3079 | /* ADDIL or LDIL instructions. */ | |
3080 | case R_PARISC_DLTREL21L: | |
3081 | case R_PARISC_DLTIND21L: | |
3082 | case R_PARISC_LTOFF_FPTR21L: | |
3083 | case R_PARISC_PCREL21L: | |
3084 | case R_PARISC_LTOFF_TP21L: | |
3085 | case R_PARISC_DPREL21L: | |
3086 | case R_PARISC_PLTOFF21L: | |
3087 | case R_PARISC_DIR21L: | |
3088 | return (insn & ~0x1fffff) | re_assemble_21 (sym_value); | |
3089 | ||
3090 | /* LDO and integer loads/stores with 14 bit displacements. */ | |
3091 | case R_PARISC_DLTREL14R: | |
3092 | case R_PARISC_DLTREL14F: | |
3093 | case R_PARISC_DLTIND14R: | |
3094 | case R_PARISC_DLTIND14F: | |
3095 | case R_PARISC_LTOFF_FPTR14R: | |
3096 | case R_PARISC_PCREL14R: | |
3097 | case R_PARISC_PCREL14F: | |
3098 | case R_PARISC_LTOFF_TP14R: | |
3099 | case R_PARISC_LTOFF_TP14F: | |
3100 | case R_PARISC_DPREL14R: | |
3101 | case R_PARISC_DPREL14F: | |
3102 | case R_PARISC_PLTOFF14R: | |
3103 | case R_PARISC_PLTOFF14F: | |
3104 | case R_PARISC_DIR14R: | |
3105 | case R_PARISC_DIR14F: | |
3106 | return (insn & ~0x3fff) | low_sign_unext (sym_value, 14); | |
3107 | ||
3108 | /* PA2.0W LDO and integer loads/stores with 16 bit displacements. */ | |
3109 | case R_PARISC_LTOFF_FPTR16F: | |
3110 | case R_PARISC_PCREL16F: | |
3111 | case R_PARISC_LTOFF_TP16F: | |
3112 | case R_PARISC_GPREL16F: | |
3113 | case R_PARISC_PLTOFF16F: | |
3114 | case R_PARISC_DIR16F: | |
3115 | case R_PARISC_LTOFF16F: | |
3116 | return (insn & ~0xffff) | re_assemble_16 (sym_value); | |
3117 | ||
3118 | /* Doubleword loads and stores with a 14 bit displacement. */ | |
3119 | case R_PARISC_DLTREL14DR: | |
3120 | case R_PARISC_DLTIND14DR: | |
3121 | case R_PARISC_LTOFF_FPTR14DR: | |
3122 | case R_PARISC_LTOFF_FPTR16DF: | |
3123 | case R_PARISC_PCREL14DR: | |
3124 | case R_PARISC_PCREL16DF: | |
3125 | case R_PARISC_LTOFF_TP14DR: | |
3126 | case R_PARISC_LTOFF_TP16DF: | |
3127 | case R_PARISC_DPREL14DR: | |
3128 | case R_PARISC_GPREL16DF: | |
3129 | case R_PARISC_PLTOFF14DR: | |
3130 | case R_PARISC_PLTOFF16DF: | |
3131 | case R_PARISC_DIR14DR: | |
3132 | case R_PARISC_DIR16DF: | |
3133 | case R_PARISC_LTOFF16DF: | |
3134 | return (insn & ~0x3ff1) | (((sym_value & 0x2000) >> 13) | |
3135 | | ((sym_value & 0x1ff8) << 1)); | |
3136 | ||
3137 | /* Floating point single word load/store instructions. */ | |
3138 | case R_PARISC_DLTREL14WR: | |
3139 | case R_PARISC_DLTIND14WR: | |
3140 | case R_PARISC_LTOFF_FPTR14WR: | |
3141 | case R_PARISC_LTOFF_FPTR16WF: | |
3142 | case R_PARISC_PCREL14WR: | |
3143 | case R_PARISC_PCREL16WF: | |
3144 | case R_PARISC_LTOFF_TP14WR: | |
3145 | case R_PARISC_LTOFF_TP16WF: | |
3146 | case R_PARISC_DPREL14WR: | |
3147 | case R_PARISC_GPREL16WF: | |
3148 | case R_PARISC_PLTOFF14WR: | |
3149 | case R_PARISC_PLTOFF16WF: | |
3150 | case R_PARISC_DIR16WF: | |
3151 | case R_PARISC_DIR14WR: | |
3152 | case R_PARISC_LTOFF16WF: | |
3153 | return (insn & ~0x3ff9) | (((sym_value & 0x2000) >> 13) | |
3154 | | ((sym_value & 0x1ffc) << 1)); | |
3155 | ||
3156 | default: | |
3157 | return insn; | |
3158 | } | |
3159 | } | |
3160 | ||
3161 | /* Compute the value for a relocation (REL) during a final link stage, | |
3162 | then insert the value into the proper location in CONTENTS. | |
3163 | ||
3164 | VALUE is a tentative value for the relocation and may be overridden | |
3165 | and modified here based on the specific relocation to be performed. | |
3166 | ||
3167 | For example we do conversions for PC-relative branches in this routine | |
3168 | or redirection of calls to external routines to stubs. | |
3169 | ||
3170 | The work of actually applying the relocation is left to a helper | |
3171 | routine in an attempt to reduce the complexity and size of this | |
3172 | function. */ | |
3173 | ||
3174 | static bfd_reloc_status_type | |
3175 | elf_hppa_final_link_relocate (Elf_Internal_Rela *rel, | |
3176 | bfd *input_bfd, | |
3177 | bfd *output_bfd, | |
3178 | asection *input_section, | |
3179 | bfd_byte *contents, | |
3180 | bfd_vma value, | |
3181 | struct bfd_link_info *info, | |
3182 | asection *sym_sec, | |
3183 | struct elf_link_hash_entry *eh) | |
3184 | { | |
3185 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); | |
3186 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); | |
3187 | bfd_vma *local_offsets; | |
3188 | Elf_Internal_Shdr *symtab_hdr; | |
3189 | int insn; | |
3190 | bfd_vma max_branch_offset = 0; | |
3191 | bfd_vma offset = rel->r_offset; | |
3192 | bfd_signed_vma addend = rel->r_addend; | |
3193 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); | |
3194 | unsigned int r_symndx = ELF_R_SYM (rel->r_info); | |
3195 | unsigned int r_type = howto->type; | |
3196 | bfd_byte *hit_data = contents + offset; | |
3197 | ||
4dfe6ac6 NC |
3198 | if (hppa_info == NULL) |
3199 | return bfd_reloc_notsupported; | |
68ffbac6 | 3200 | |
5887528b DA |
3201 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3202 | local_offsets = elf_local_got_offsets (input_bfd); | |
3203 | insn = bfd_get_32 (input_bfd, hit_data); | |
3204 | ||
3205 | switch (r_type) | |
3206 | { | |
3207 | case R_PARISC_NONE: | |
3208 | break; | |
3209 | ||
3210 | /* Basic function call support. | |
3211 | ||
3212 | Note for a call to a function defined in another dynamic library | |
3213 | we want to redirect the call to a stub. */ | |
3214 | ||
3215 | /* PC relative relocs without an implicit offset. */ | |
3216 | case R_PARISC_PCREL21L: | |
3217 | case R_PARISC_PCREL14R: | |
3218 | case R_PARISC_PCREL14F: | |
3219 | case R_PARISC_PCREL14WR: | |
3220 | case R_PARISC_PCREL14DR: | |
3221 | case R_PARISC_PCREL16F: | |
3222 | case R_PARISC_PCREL16WF: | |
3223 | case R_PARISC_PCREL16DF: | |
3224 | { | |
3225 | /* If this is a call to a function defined in another dynamic | |
3226 | library, then redirect the call to the local stub for this | |
3227 | function. */ | |
3228 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3229 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3230 | + hppa_info->stub_sec->output_section->vma); | |
3231 | ||
3232 | /* Turn VALUE into a proper PC relative address. */ | |
3233 | value -= (offset + input_section->output_offset | |
3234 | + input_section->output_section->vma); | |
3235 | ||
3236 | /* Adjust for any field selectors. */ | |
3237 | if (r_type == R_PARISC_PCREL21L) | |
3238 | value = hppa_field_adjust (value, -8 + addend, e_lsel); | |
3239 | else if (r_type == R_PARISC_PCREL14F | |
3240 | || r_type == R_PARISC_PCREL16F | |
3241 | || r_type == R_PARISC_PCREL16WF | |
3242 | || r_type == R_PARISC_PCREL16DF) | |
3243 | value = hppa_field_adjust (value, -8 + addend, e_fsel); | |
3244 | else | |
3245 | value = hppa_field_adjust (value, -8 + addend, e_rsel); | |
3246 | ||
3247 | /* Apply the relocation to the given instruction. */ | |
3248 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3249 | break; | |
3250 | } | |
3251 | ||
3252 | case R_PARISC_PCREL12F: | |
3253 | case R_PARISC_PCREL22F: | |
3254 | case R_PARISC_PCREL17F: | |
3255 | case R_PARISC_PCREL22C: | |
3256 | case R_PARISC_PCREL17C: | |
3257 | case R_PARISC_PCREL17R: | |
3258 | { | |
3259 | /* If this is a call to a function defined in another dynamic | |
3260 | library, then redirect the call to the local stub for this | |
3261 | function. */ | |
3262 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3263 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3264 | + hppa_info->stub_sec->output_section->vma); | |
3265 | ||
3266 | /* Turn VALUE into a proper PC relative address. */ | |
3267 | value -= (offset + input_section->output_offset | |
3268 | + input_section->output_section->vma); | |
3269 | addend -= 8; | |
3270 | ||
3271 | if (r_type == (unsigned int) R_PARISC_PCREL22F) | |
3272 | max_branch_offset = (1 << (22-1)) << 2; | |
3273 | else if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3274 | max_branch_offset = (1 << (17-1)) << 2; | |
3275 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3276 | max_branch_offset = (1 << (12-1)) << 2; | |
3277 | ||
3278 | /* Make sure we can reach the branch target. */ | |
3279 | if (max_branch_offset != 0 | |
3280 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3281 | { | |
4eca0228 | 3282 | _bfd_error_handler |
695344c0 | 3283 | /* xgettext:c-format */ |
2dcf00ce | 3284 | (_("%pB(%pA+%#" PRIx64 "): cannot reach %s"), |
5887528b DA |
3285 | input_bfd, |
3286 | input_section, | |
2dcf00ce | 3287 | (uint64_t) offset, |
d91a6875 | 3288 | eh ? eh->root.root.string : "unknown"); |
5887528b | 3289 | bfd_set_error (bfd_error_bad_value); |
d91a6875 | 3290 | return bfd_reloc_overflow; |
5887528b DA |
3291 | } |
3292 | ||
3293 | /* Adjust for any field selectors. */ | |
3294 | if (r_type == R_PARISC_PCREL17R) | |
3295 | value = hppa_field_adjust (value, addend, e_rsel); | |
3296 | else | |
3297 | value = hppa_field_adjust (value, addend, e_fsel); | |
3298 | ||
3299 | /* All branches are implicitly shifted by 2 places. */ | |
3300 | value >>= 2; | |
3301 | ||
3302 | /* Apply the relocation to the given instruction. */ | |
3303 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3304 | break; | |
3305 | } | |
3306 | ||
3307 | /* Indirect references to data through the DLT. */ | |
3308 | case R_PARISC_DLTIND14R: | |
3309 | case R_PARISC_DLTIND14F: | |
3310 | case R_PARISC_DLTIND14DR: | |
3311 | case R_PARISC_DLTIND14WR: | |
3312 | case R_PARISC_DLTIND21L: | |
3313 | case R_PARISC_LTOFF_FPTR14R: | |
3314 | case R_PARISC_LTOFF_FPTR14DR: | |
3315 | case R_PARISC_LTOFF_FPTR14WR: | |
3316 | case R_PARISC_LTOFF_FPTR21L: | |
3317 | case R_PARISC_LTOFF_FPTR16F: | |
3318 | case R_PARISC_LTOFF_FPTR16WF: | |
3319 | case R_PARISC_LTOFF_FPTR16DF: | |
3320 | case R_PARISC_LTOFF_TP21L: | |
3321 | case R_PARISC_LTOFF_TP14R: | |
3322 | case R_PARISC_LTOFF_TP14F: | |
3323 | case R_PARISC_LTOFF_TP14WR: | |
3324 | case R_PARISC_LTOFF_TP14DR: | |
3325 | case R_PARISC_LTOFF_TP16F: | |
3326 | case R_PARISC_LTOFF_TP16WF: | |
3327 | case R_PARISC_LTOFF_TP16DF: | |
3328 | case R_PARISC_LTOFF16F: | |
3329 | case R_PARISC_LTOFF16WF: | |
3330 | case R_PARISC_LTOFF16DF: | |
3331 | { | |
3332 | bfd_vma off; | |
3333 | ||
3334 | /* If this relocation was against a local symbol, then we still | |
3335 | have not set up the DLT entry (it's not convenient to do so | |
3336 | in the "finalize_dlt" routine because it is difficult to get | |
3337 | to the local symbol's value). | |
3338 | ||
3339 | So, if this is a local symbol (h == NULL), then we need to | |
3340 | fill in its DLT entry. | |
3341 | ||
3342 | Similarly we may still need to set up an entry in .opd for | |
3343 | a local function which had its address taken. */ | |
3344 | if (hh == NULL) | |
3345 | { | |
3346 | bfd_vma *local_opd_offsets, *local_dlt_offsets; | |
3347 | ||
07d6d2b8 AM |
3348 | if (local_offsets == NULL) |
3349 | abort (); | |
5887528b DA |
3350 | |
3351 | /* Now do .opd creation if needed. */ | |
3352 | if (r_type == R_PARISC_LTOFF_FPTR14R | |
3353 | || r_type == R_PARISC_LTOFF_FPTR14DR | |
3354 | || r_type == R_PARISC_LTOFF_FPTR14WR | |
3355 | || r_type == R_PARISC_LTOFF_FPTR21L | |
3356 | || r_type == R_PARISC_LTOFF_FPTR16F | |
3357 | || r_type == R_PARISC_LTOFF_FPTR16WF | |
3358 | || r_type == R_PARISC_LTOFF_FPTR16DF) | |
3359 | { | |
3360 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; | |
3361 | off = local_opd_offsets[r_symndx]; | |
3362 | ||
3363 | /* The last bit records whether we've already initialised | |
3364 | this local .opd entry. */ | |
3365 | if ((off & 1) != 0) | |
3366 | { | |
3367 | BFD_ASSERT (off != (bfd_vma) -1); | |
3368 | off &= ~1; | |
3369 | } | |
3370 | else | |
3371 | { | |
3372 | local_opd_offsets[r_symndx] |= 1; | |
3373 | ||
3374 | /* The first two words of an .opd entry are zero. */ | |
3375 | memset (hppa_info->opd_sec->contents + off, 0, 16); | |
3376 | ||
3377 | /* The next word is the address of the function. */ | |
3378 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3379 | (hppa_info->opd_sec->contents + off + 16)); | |
3380 | ||
3381 | /* The last word is our local __gp value. */ | |
586338b8 | 3382 | value = _bfd_get_gp_value (info->output_bfd); |
5887528b DA |
3383 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
3384 | (hppa_info->opd_sec->contents + off + 24)); | |
3385 | } | |
3386 | ||
3387 | /* The DLT value is the address of the .opd entry. */ | |
3388 | value = (off | |
3389 | + hppa_info->opd_sec->output_offset | |
3390 | + hppa_info->opd_sec->output_section->vma); | |
3391 | addend = 0; | |
3392 | } | |
3393 | ||
3394 | local_dlt_offsets = local_offsets; | |
3395 | off = local_dlt_offsets[r_symndx]; | |
3396 | ||
3397 | if ((off & 1) != 0) | |
3398 | { | |
3399 | BFD_ASSERT (off != (bfd_vma) -1); | |
3400 | off &= ~1; | |
3401 | } | |
3402 | else | |
3403 | { | |
3404 | local_dlt_offsets[r_symndx] |= 1; | |
3405 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3406 | value + addend, | |
3407 | hppa_info->dlt_sec->contents + off); | |
3408 | } | |
3409 | } | |
3410 | else | |
3411 | off = hh->dlt_offset; | |
3412 | ||
3413 | /* We want the value of the DLT offset for this symbol, not | |
3414 | the symbol's actual address. Note that __gp may not point | |
3415 | to the start of the DLT, so we have to compute the absolute | |
3416 | address, then subtract out the value of __gp. */ | |
3417 | value = (off | |
3418 | + hppa_info->dlt_sec->output_offset | |
3419 | + hppa_info->dlt_sec->output_section->vma); | |
3420 | value -= _bfd_get_gp_value (output_bfd); | |
3421 | ||
3422 | /* All DLTIND relocations are basically the same at this point, | |
3423 | except that we need different field selectors for the 21bit | |
3424 | version vs the 14bit versions. */ | |
3425 | if (r_type == R_PARISC_DLTIND21L | |
3426 | || r_type == R_PARISC_LTOFF_FPTR21L | |
3427 | || r_type == R_PARISC_LTOFF_TP21L) | |
3428 | value = hppa_field_adjust (value, 0, e_lsel); | |
3429 | else if (r_type == R_PARISC_DLTIND14F | |
3430 | || r_type == R_PARISC_LTOFF_FPTR16F | |
3431 | || r_type == R_PARISC_LTOFF_FPTR16WF | |
3432 | || r_type == R_PARISC_LTOFF_FPTR16DF | |
3433 | || r_type == R_PARISC_LTOFF16F | |
3434 | || r_type == R_PARISC_LTOFF16DF | |
3435 | || r_type == R_PARISC_LTOFF16WF | |
3436 | || r_type == R_PARISC_LTOFF_TP16F | |
3437 | || r_type == R_PARISC_LTOFF_TP16WF | |
3438 | || r_type == R_PARISC_LTOFF_TP16DF) | |
3439 | value = hppa_field_adjust (value, 0, e_fsel); | |
3440 | else | |
3441 | value = hppa_field_adjust (value, 0, e_rsel); | |
3442 | ||
3443 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3444 | break; | |
3445 | } | |
3446 | ||
3447 | case R_PARISC_DLTREL14R: | |
3448 | case R_PARISC_DLTREL14F: | |
3449 | case R_PARISC_DLTREL14DR: | |
3450 | case R_PARISC_DLTREL14WR: | |
3451 | case R_PARISC_DLTREL21L: | |
3452 | case R_PARISC_DPREL21L: | |
3453 | case R_PARISC_DPREL14WR: | |
3454 | case R_PARISC_DPREL14DR: | |
3455 | case R_PARISC_DPREL14R: | |
3456 | case R_PARISC_DPREL14F: | |
3457 | case R_PARISC_GPREL16F: | |
3458 | case R_PARISC_GPREL16WF: | |
3459 | case R_PARISC_GPREL16DF: | |
3460 | { | |
3461 | /* Subtract out the global pointer value to make value a DLT | |
3462 | relative address. */ | |
3463 | value -= _bfd_get_gp_value (output_bfd); | |
3464 | ||
3465 | /* All DLTREL relocations are basically the same at this point, | |
3466 | except that we need different field selectors for the 21bit | |
3467 | version vs the 14bit versions. */ | |
3468 | if (r_type == R_PARISC_DLTREL21L | |
3469 | || r_type == R_PARISC_DPREL21L) | |
3470 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3471 | else if (r_type == R_PARISC_DLTREL14F | |
3472 | || r_type == R_PARISC_DPREL14F | |
3473 | || r_type == R_PARISC_GPREL16F | |
3474 | || r_type == R_PARISC_GPREL16WF | |
3475 | || r_type == R_PARISC_GPREL16DF) | |
3476 | value = hppa_field_adjust (value, addend, e_fsel); | |
3477 | else | |
3478 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3479 | ||
3480 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3481 | break; | |
3482 | } | |
3483 | ||
3484 | case R_PARISC_DIR21L: | |
3485 | case R_PARISC_DIR17R: | |
3486 | case R_PARISC_DIR17F: | |
3487 | case R_PARISC_DIR14R: | |
3488 | case R_PARISC_DIR14F: | |
3489 | case R_PARISC_DIR14WR: | |
3490 | case R_PARISC_DIR14DR: | |
3491 | case R_PARISC_DIR16F: | |
3492 | case R_PARISC_DIR16WF: | |
3493 | case R_PARISC_DIR16DF: | |
3494 | { | |
3495 | /* All DIR relocations are basically the same at this point, | |
3496 | except that branch offsets need to be divided by four, and | |
3497 | we need different field selectors. Note that we don't | |
3498 | redirect absolute calls to local stubs. */ | |
3499 | ||
3500 | if (r_type == R_PARISC_DIR21L) | |
3501 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3502 | else if (r_type == R_PARISC_DIR17F | |
3503 | || r_type == R_PARISC_DIR16F | |
3504 | || r_type == R_PARISC_DIR16WF | |
3505 | || r_type == R_PARISC_DIR16DF | |
3506 | || r_type == R_PARISC_DIR14F) | |
3507 | value = hppa_field_adjust (value, addend, e_fsel); | |
3508 | else | |
3509 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3510 | ||
3511 | if (r_type == R_PARISC_DIR17R || r_type == R_PARISC_DIR17F) | |
3512 | /* All branches are implicitly shifted by 2 places. */ | |
3513 | value >>= 2; | |
3514 | ||
3515 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3516 | break; | |
3517 | } | |
3518 | ||
3519 | case R_PARISC_PLTOFF21L: | |
3520 | case R_PARISC_PLTOFF14R: | |
3521 | case R_PARISC_PLTOFF14F: | |
3522 | case R_PARISC_PLTOFF14WR: | |
3523 | case R_PARISC_PLTOFF14DR: | |
3524 | case R_PARISC_PLTOFF16F: | |
3525 | case R_PARISC_PLTOFF16WF: | |
3526 | case R_PARISC_PLTOFF16DF: | |
3527 | { | |
3528 | /* We want the value of the PLT offset for this symbol, not | |
3529 | the symbol's actual address. Note that __gp may not point | |
3530 | to the start of the DLT, so we have to compute the absolute | |
3531 | address, then subtract out the value of __gp. */ | |
3532 | value = (hh->plt_offset | |
3533 | + hppa_info->plt_sec->output_offset | |
3534 | + hppa_info->plt_sec->output_section->vma); | |
3535 | value -= _bfd_get_gp_value (output_bfd); | |
3536 | ||
3537 | /* All PLTOFF relocations are basically the same at this point, | |
3538 | except that we need different field selectors for the 21bit | |
3539 | version vs the 14bit versions. */ | |
3540 | if (r_type == R_PARISC_PLTOFF21L) | |
3541 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3542 | else if (r_type == R_PARISC_PLTOFF14F | |
3543 | || r_type == R_PARISC_PLTOFF16F | |
3544 | || r_type == R_PARISC_PLTOFF16WF | |
3545 | || r_type == R_PARISC_PLTOFF16DF) | |
3546 | value = hppa_field_adjust (value, addend, e_fsel); | |
3547 | else | |
3548 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3549 | ||
3550 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3551 | break; | |
3552 | } | |
3553 | ||
3554 | case R_PARISC_LTOFF_FPTR32: | |
3555 | { | |
38cf70ca NC |
3556 | /* FIXME: There used to be code here to create the FPTR itself if |
3557 | the relocation was against a local symbol. But the code could | |
3558 | never have worked. If the assert below is ever triggered then | |
3559 | the code will need to be reinstated and fixed so that it does | |
3560 | what is needed. */ | |
3561 | BFD_ASSERT (hh != NULL); | |
5887528b DA |
3562 | |
3563 | /* We want the value of the DLT offset for this symbol, not | |
3564 | the symbol's actual address. Note that __gp may not point | |
3565 | to the start of the DLT, so we have to compute the absolute | |
3566 | address, then subtract out the value of __gp. */ | |
3567 | value = (hh->dlt_offset | |
3568 | + hppa_info->dlt_sec->output_offset | |
3569 | + hppa_info->dlt_sec->output_section->vma); | |
3570 | value -= _bfd_get_gp_value (output_bfd); | |
3571 | bfd_put_32 (input_bfd, value, hit_data); | |
3572 | return bfd_reloc_ok; | |
3573 | } | |
3574 | ||
3575 | case R_PARISC_LTOFF_FPTR64: | |
3576 | case R_PARISC_LTOFF_TP64: | |
3577 | { | |
3578 | /* We may still need to create the FPTR itself if it was for | |
3579 | a local symbol. */ | |
3580 | if (eh == NULL && r_type == R_PARISC_LTOFF_FPTR64) | |
3581 | { | |
3582 | /* The first two words of an .opd entry are zero. */ | |
3583 | memset (hppa_info->opd_sec->contents + hh->opd_offset, 0, 16); | |
3584 | ||
3585 | /* The next word is the address of the function. */ | |
3586 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3587 | (hppa_info->opd_sec->contents | |
3588 | + hh->opd_offset + 16)); | |
3589 | ||
3590 | /* The last word is our local __gp value. */ | |
586338b8 | 3591 | value = _bfd_get_gp_value (info->output_bfd); |
5887528b DA |
3592 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
3593 | hppa_info->opd_sec->contents + hh->opd_offset + 24); | |
3594 | ||
3595 | /* The DLT value is the address of the .opd entry. */ | |
3596 | value = (hh->opd_offset | |
3597 | + hppa_info->opd_sec->output_offset | |
3598 | + hppa_info->opd_sec->output_section->vma); | |
3599 | ||
3600 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3601 | value, | |
3602 | hppa_info->dlt_sec->contents + hh->dlt_offset); | |
3603 | } | |
3604 | ||
3605 | /* We want the value of the DLT offset for this symbol, not | |
3606 | the symbol's actual address. Note that __gp may not point | |
3607 | to the start of the DLT, so we have to compute the absolute | |
3608 | address, then subtract out the value of __gp. */ | |
3609 | value = (hh->dlt_offset | |
3610 | + hppa_info->dlt_sec->output_offset | |
3611 | + hppa_info->dlt_sec->output_section->vma); | |
3612 | value -= _bfd_get_gp_value (output_bfd); | |
3613 | bfd_put_64 (input_bfd, value, hit_data); | |
3614 | return bfd_reloc_ok; | |
3615 | } | |
3616 | ||
3617 | case R_PARISC_DIR32: | |
3618 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
3619 | return bfd_reloc_ok; | |
3620 | ||
3621 | case R_PARISC_DIR64: | |
3622 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3623 | return bfd_reloc_ok; | |
3624 | ||
3625 | case R_PARISC_GPREL64: | |
3626 | /* Subtract out the global pointer value to make value a DLT | |
3627 | relative address. */ | |
3628 | value -= _bfd_get_gp_value (output_bfd); | |
3629 | ||
3630 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3631 | return bfd_reloc_ok; | |
3632 | ||
3633 | case R_PARISC_LTOFF64: | |
3634 | /* We want the value of the DLT offset for this symbol, not | |
3635 | the symbol's actual address. Note that __gp may not point | |
3636 | to the start of the DLT, so we have to compute the absolute | |
3637 | address, then subtract out the value of __gp. */ | |
3638 | value = (hh->dlt_offset | |
3639 | + hppa_info->dlt_sec->output_offset | |
3640 | + hppa_info->dlt_sec->output_section->vma); | |
3641 | value -= _bfd_get_gp_value (output_bfd); | |
3642 | ||
3643 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3644 | return bfd_reloc_ok; | |
3645 | ||
3646 | case R_PARISC_PCREL32: | |
3647 | { | |
3648 | /* If this is a call to a function defined in another dynamic | |
3649 | library, then redirect the call to the local stub for this | |
3650 | function. */ | |
3651 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3652 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3653 | + hppa_info->stub_sec->output_section->vma); | |
3654 | ||
3655 | /* Turn VALUE into a proper PC relative address. */ | |
3656 | value -= (offset + input_section->output_offset | |
3657 | + input_section->output_section->vma); | |
3658 | ||
3659 | value += addend; | |
3660 | value -= 8; | |
3661 | bfd_put_32 (input_bfd, value, hit_data); | |
3662 | return bfd_reloc_ok; | |
3663 | } | |
3664 | ||
3665 | case R_PARISC_PCREL64: | |
3666 | { | |
3667 | /* If this is a call to a function defined in another dynamic | |
3668 | library, then redirect the call to the local stub for this | |
3669 | function. */ | |
3670 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3671 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3672 | + hppa_info->stub_sec->output_section->vma); | |
3673 | ||
3674 | /* Turn VALUE into a proper PC relative address. */ | |
3675 | value -= (offset + input_section->output_offset | |
3676 | + input_section->output_section->vma); | |
3677 | ||
3678 | value += addend; | |
3679 | value -= 8; | |
3680 | bfd_put_64 (input_bfd, value, hit_data); | |
3681 | return bfd_reloc_ok; | |
3682 | } | |
3683 | ||
3684 | case R_PARISC_FPTR64: | |
3685 | { | |
3686 | bfd_vma off; | |
3687 | ||
3688 | /* We may still need to create the FPTR itself if it was for | |
3689 | a local symbol. */ | |
3690 | if (hh == NULL) | |
3691 | { | |
3692 | bfd_vma *local_opd_offsets; | |
3693 | ||
07d6d2b8 AM |
3694 | if (local_offsets == NULL) |
3695 | abort (); | |
5887528b DA |
3696 | |
3697 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; | |
3698 | off = local_opd_offsets[r_symndx]; | |
3699 | ||
3700 | /* The last bit records whether we've already initialised | |
3701 | this local .opd entry. */ | |
3702 | if ((off & 1) != 0) | |
3703 | { | |
3704 | BFD_ASSERT (off != (bfd_vma) -1); | |
07d6d2b8 | 3705 | off &= ~1; |
5887528b DA |
3706 | } |
3707 | else | |
3708 | { | |
3709 | /* The first two words of an .opd entry are zero. */ | |
3710 | memset (hppa_info->opd_sec->contents + off, 0, 16); | |
3711 | ||
3712 | /* The next word is the address of the function. */ | |
3713 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3714 | (hppa_info->opd_sec->contents + off + 16)); | |
3715 | ||
3716 | /* The last word is our local __gp value. */ | |
586338b8 | 3717 | value = _bfd_get_gp_value (info->output_bfd); |
5887528b DA |
3718 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
3719 | hppa_info->opd_sec->contents + off + 24); | |
3720 | } | |
3721 | } | |
3722 | else | |
3723 | off = hh->opd_offset; | |
3724 | ||
3725 | if (hh == NULL || hh->want_opd) | |
3726 | /* We want the value of the OPD offset for this symbol. */ | |
3727 | value = (off | |
3728 | + hppa_info->opd_sec->output_offset | |
3729 | + hppa_info->opd_sec->output_section->vma); | |
3730 | else | |
3731 | /* We want the address of the symbol. */ | |
3732 | value += addend; | |
3733 | ||
3734 | bfd_put_64 (input_bfd, value, hit_data); | |
3735 | return bfd_reloc_ok; | |
3736 | } | |
3737 | ||
3738 | case R_PARISC_SECREL32: | |
3739 | if (sym_sec) | |
3740 | value -= sym_sec->output_section->vma; | |
3741 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
3742 | return bfd_reloc_ok; | |
3743 | ||
3744 | case R_PARISC_SEGREL32: | |
3745 | case R_PARISC_SEGREL64: | |
3746 | { | |
3747 | /* If this is the first SEGREL relocation, then initialize | |
3748 | the segment base values. */ | |
3749 | if (hppa_info->text_segment_base == (bfd_vma) -1) | |
3750 | bfd_map_over_sections (output_bfd, elf_hppa_record_segment_addrs, | |
3751 | hppa_info); | |
3752 | ||
3753 | /* VALUE holds the absolute address. We want to include the | |
3754 | addend, then turn it into a segment relative address. | |
3755 | ||
3756 | The segment is derived from SYM_SEC. We assume that there are | |
3757 | only two segments of note in the resulting executable/shlib. | |
3758 | A readonly segment (.text) and a readwrite segment (.data). */ | |
3759 | value += addend; | |
3760 | ||
3761 | if (sym_sec->flags & SEC_CODE) | |
3762 | value -= hppa_info->text_segment_base; | |
3763 | else | |
3764 | value -= hppa_info->data_segment_base; | |
3765 | ||
3766 | if (r_type == R_PARISC_SEGREL32) | |
3767 | bfd_put_32 (input_bfd, value, hit_data); | |
3768 | else | |
3769 | bfd_put_64 (input_bfd, value, hit_data); | |
3770 | return bfd_reloc_ok; | |
3771 | } | |
3772 | ||
3773 | /* Something we don't know how to handle. */ | |
3774 | default: | |
3775 | return bfd_reloc_notsupported; | |
3776 | } | |
3777 | ||
3778 | /* Update the instruction word. */ | |
3779 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); | |
3780 | return bfd_reloc_ok; | |
3781 | } | |
3782 | ||
3783 | /* Relocate an HPPA ELF section. */ | |
3784 | ||
3785 | static bfd_boolean | |
3786 | elf64_hppa_relocate_section (bfd *output_bfd, | |
3787 | struct bfd_link_info *info, | |
3788 | bfd *input_bfd, | |
3789 | asection *input_section, | |
3790 | bfd_byte *contents, | |
3791 | Elf_Internal_Rela *relocs, | |
3792 | Elf_Internal_Sym *local_syms, | |
3793 | asection **local_sections) | |
3794 | { | |
3795 | Elf_Internal_Shdr *symtab_hdr; | |
3796 | Elf_Internal_Rela *rel; | |
3797 | Elf_Internal_Rela *relend; | |
3798 | struct elf64_hppa_link_hash_table *hppa_info; | |
3799 | ||
3800 | hppa_info = hppa_link_hash_table (info); | |
4dfe6ac6 NC |
3801 | if (hppa_info == NULL) |
3802 | return FALSE; | |
3803 | ||
5887528b DA |
3804 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3805 | ||
3806 | rel = relocs; | |
3807 | relend = relocs + input_section->reloc_count; | |
3808 | for (; rel < relend; rel++) | |
3809 | { | |
3810 | int r_type; | |
3811 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); | |
3812 | unsigned long r_symndx; | |
3813 | struct elf_link_hash_entry *eh; | |
3814 | Elf_Internal_Sym *sym; | |
3815 | asection *sym_sec; | |
3816 | bfd_vma relocation; | |
3817 | bfd_reloc_status_type r; | |
5887528b DA |
3818 | |
3819 | r_type = ELF_R_TYPE (rel->r_info); | |
3820 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) | |
3821 | { | |
3822 | bfd_set_error (bfd_error_bad_value); | |
3823 | return FALSE; | |
3824 | } | |
3825 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3826 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3827 | continue; | |
3828 | ||
3829 | /* This is a final link. */ | |
3830 | r_symndx = ELF_R_SYM (rel->r_info); | |
3831 | eh = NULL; | |
3832 | sym = NULL; | |
3833 | sym_sec = NULL; | |
5887528b DA |
3834 | if (r_symndx < symtab_hdr->sh_info) |
3835 | { | |
3836 | /* This is a local symbol, hh defaults to NULL. */ | |
3837 | sym = local_syms + r_symndx; | |
3838 | sym_sec = local_sections[r_symndx]; | |
3839 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rel); | |
3840 | } | |
3841 | else | |
3842 | { | |
3843 | /* This is not a local symbol. */ | |
5887528b DA |
3844 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
3845 | ||
68ffbac6 | 3846 | /* It seems this can happen with erroneous or unsupported |
5887528b DA |
3847 | input (mixing a.out and elf in an archive, for example.) */ |
3848 | if (sym_hashes == NULL) | |
3849 | return FALSE; | |
3850 | ||
3851 | eh = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3852 | ||
8a5da09b AM |
3853 | if (info->wrap_hash != NULL |
3854 | && (input_section->flags & SEC_DEBUGGING) != 0) | |
3855 | eh = ((struct elf_link_hash_entry *) | |
3856 | unwrap_hash_lookup (info, input_bfd, &eh->root)); | |
3857 | ||
68ffbac6 | 3858 | while (eh->root.type == bfd_link_hash_indirect |
5887528b DA |
3859 | || eh->root.type == bfd_link_hash_warning) |
3860 | eh = (struct elf_link_hash_entry *) eh->root.u.i.link; | |
3861 | ||
5887528b DA |
3862 | relocation = 0; |
3863 | if (eh->root.type == bfd_link_hash_defined | |
3864 | || eh->root.type == bfd_link_hash_defweak) | |
3865 | { | |
3866 | sym_sec = eh->root.u.def.section; | |
c7e2358a AM |
3867 | if (sym_sec != NULL |
3868 | && sym_sec->output_section != NULL) | |
5887528b DA |
3869 | relocation = (eh->root.u.def.value |
3870 | + sym_sec->output_section->vma | |
3871 | + sym_sec->output_offset); | |
3872 | } | |
3873 | else if (eh->root.type == bfd_link_hash_undefweak) | |
3874 | ; | |
3875 | else if (info->unresolved_syms_in_objects == RM_IGNORE | |
3876 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT) | |
3877 | ; | |
0e1862bb | 3878 | else if (!bfd_link_relocatable (info) |
5887528b DA |
3879 | && elf_hppa_is_dynamic_loader_symbol (eh->root.root.string)) |
3880 | continue; | |
0e1862bb | 3881 | else if (!bfd_link_relocatable (info)) |
5887528b DA |
3882 | { |
3883 | bfd_boolean err; | |
95a51568 FS |
3884 | |
3885 | err = (info->unresolved_syms_in_objects == RM_DIAGNOSE | |
3886 | && !info->warn_unresolved_syms) | |
3887 | || ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT; | |
3888 | ||
3889 | info->callbacks->undefined_symbol | |
3890 | (info, eh->root.root.string, input_bfd, | |
3891 | input_section, rel->r_offset, err); | |
5887528b DA |
3892 | } |
3893 | ||
07d6d2b8 AM |
3894 | if (!bfd_link_relocatable (info) |
3895 | && relocation == 0 | |
3896 | && eh->root.type != bfd_link_hash_defined | |
3897 | && eh->root.type != bfd_link_hash_defweak | |
3898 | && eh->root.type != bfd_link_hash_undefweak) | |
3899 | { | |
3900 | if (info->unresolved_syms_in_objects == RM_IGNORE | |
3901 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT | |
3902 | && eh->type == STT_PARISC_MILLI) | |
95a51568 | 3903 | info->callbacks->undefined_symbol |
1a72702b AM |
3904 | (info, eh_name (eh), input_bfd, |
3905 | input_section, rel->r_offset, FALSE); | |
07d6d2b8 | 3906 | } |
5887528b DA |
3907 | } |
3908 | ||
dbaa2011 | 3909 | if (sym_sec != NULL && discarded_section (sym_sec)) |
e4067dbb | 3910 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3911 | rel, 1, relend, howto, 0, contents); |
5887528b | 3912 | |
0e1862bb | 3913 | if (bfd_link_relocatable (info)) |
5887528b DA |
3914 | continue; |
3915 | ||
3916 | r = elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, | |
3917 | input_section, contents, | |
3918 | relocation, info, sym_sec, | |
3919 | eh); | |
3920 | ||
3921 | if (r != bfd_reloc_ok) | |
3922 | { | |
3923 | switch (r) | |
3924 | { | |
3925 | default: | |
3926 | abort (); | |
3927 | case bfd_reloc_overflow: | |
3928 | { | |
3929 | const char *sym_name; | |
3930 | ||
3931 | if (eh != NULL) | |
3932 | sym_name = NULL; | |
3933 | else | |
3934 | { | |
3935 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
3936 | symtab_hdr->sh_link, | |
3937 | sym->st_name); | |
3938 | if (sym_name == NULL) | |
3939 | return FALSE; | |
3940 | if (*sym_name == '\0') | |
fd361982 | 3941 | sym_name = bfd_section_name (sym_sec); |
5887528b DA |
3942 | } |
3943 | ||
1a72702b AM |
3944 | (*info->callbacks->reloc_overflow) |
3945 | (info, (eh ? &eh->root : NULL), sym_name, howto->name, | |
3946 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
5887528b DA |
3947 | } |
3948 | break; | |
3949 | } | |
3950 | } | |
3951 | } | |
3952 | return TRUE; | |
3953 | } | |
3954 | ||
b35d266b | 3955 | static const struct bfd_elf_special_section elf64_hppa_special_sections[] = |
2f89ff8d | 3956 | { |
df3a023b | 3957 | { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS }, |
07d6d2b8 AM |
3958 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3959 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3960 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
3961 | { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
0112cd26 | 3962 | { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
07d6d2b8 | 3963 | { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
07d6d2b8 | 3964 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
3965 | }; |
3966 | ||
15bda425 JL |
3967 | /* The hash bucket size is the standard one, namely 4. */ |
3968 | ||
3969 | const struct elf_size_info hppa64_elf_size_info = | |
3970 | { | |
3971 | sizeof (Elf64_External_Ehdr), | |
3972 | sizeof (Elf64_External_Phdr), | |
3973 | sizeof (Elf64_External_Shdr), | |
3974 | sizeof (Elf64_External_Rel), | |
3975 | sizeof (Elf64_External_Rela), | |
3976 | sizeof (Elf64_External_Sym), | |
3977 | sizeof (Elf64_External_Dyn), | |
3978 | sizeof (Elf_External_Note), | |
3979 | 4, | |
3980 | 1, | |
45d6a902 | 3981 | 64, 3, |
15bda425 JL |
3982 | ELFCLASS64, EV_CURRENT, |
3983 | bfd_elf64_write_out_phdrs, | |
3984 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3985 | bfd_elf64_checksum_contents, |
15bda425 | 3986 | bfd_elf64_write_relocs, |
73ff0d56 | 3987 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
3988 | bfd_elf64_swap_symbol_out, |
3989 | bfd_elf64_slurp_reloc_table, | |
3990 | bfd_elf64_slurp_symbol_table, | |
3991 | bfd_elf64_swap_dyn_in, | |
3992 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3993 | bfd_elf64_swap_reloc_in, |
3994 | bfd_elf64_swap_reloc_out, | |
3995 | bfd_elf64_swap_reloca_in, | |
3996 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
3997 | }; |
3998 | ||
6d00b590 | 3999 | #define TARGET_BIG_SYM hppa_elf64_vec |
15bda425 JL |
4000 | #define TARGET_BIG_NAME "elf64-hppa" |
4001 | #define ELF_ARCH bfd_arch_hppa | |
ae95ffa6 | 4002 | #define ELF_TARGET_ID HPPA64_ELF_DATA |
15bda425 JL |
4003 | #define ELF_MACHINE_CODE EM_PARISC |
4004 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
4005 | 64M. But everything still uses 4k. */ | |
4006 | #define ELF_MAXPAGESIZE 0x1000 | |
d1036acb L |
4007 | #define ELF_OSABI ELFOSABI_HPUX |
4008 | ||
15bda425 | 4009 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
157090f7 | 4010 | #define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup |
15bda425 JL |
4011 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name |
4012 | #define elf_info_to_howto elf_hppa_info_to_howto | |
4013 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
4014 | ||
4015 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
4016 | #define elf_backend_object_p elf64_hppa_object_p | |
4017 | #define elf_backend_final_write_processing \ | |
4018 | elf_hppa_final_write_processing | |
99c79b2e | 4019 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
4020 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
4021 | ||
f0fe0e16 | 4022 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
4023 | |
4024 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
4025 | ||
4026 | #define elf_backend_create_dynamic_sections \ | |
4027 | elf64_hppa_create_dynamic_sections | |
ed7e9d0b | 4028 | #define elf_backend_init_file_header elf64_hppa_init_file_header |
15bda425 | 4029 | |
d00dd7dc AM |
4030 | #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all |
4031 | ||
15bda425 JL |
4032 | #define elf_backend_adjust_dynamic_symbol \ |
4033 | elf64_hppa_adjust_dynamic_symbol | |
4034 | ||
4035 | #define elf_backend_size_dynamic_sections \ | |
4036 | elf64_hppa_size_dynamic_sections | |
4037 | ||
4038 | #define elf_backend_finish_dynamic_symbol \ | |
4039 | elf64_hppa_finish_dynamic_symbol | |
4040 | #define elf_backend_finish_dynamic_sections \ | |
4041 | elf64_hppa_finish_dynamic_sections | |
235ecfbc NC |
4042 | #define elf_backend_grok_prstatus elf64_hppa_grok_prstatus |
4043 | #define elf_backend_grok_psinfo elf64_hppa_grok_psinfo | |
68ffbac6 | 4044 | |
15bda425 JL |
4045 | /* Stuff for the BFD linker: */ |
4046 | #define bfd_elf64_bfd_link_hash_table_create \ | |
4047 | elf64_hppa_hash_table_create | |
4048 | ||
4049 | #define elf_backend_check_relocs \ | |
4050 | elf64_hppa_check_relocs | |
4051 | ||
4052 | #define elf_backend_size_info \ | |
4053 | hppa64_elf_size_info | |
4054 | ||
4055 | #define elf_backend_additional_program_headers \ | |
4056 | elf64_hppa_additional_program_headers | |
4057 | ||
4058 | #define elf_backend_modify_segment_map \ | |
4059 | elf64_hppa_modify_segment_map | |
4060 | ||
1a9ccd70 NC |
4061 | #define elf_backend_allow_non_load_phdr \ |
4062 | elf64_hppa_allow_non_load_phdr | |
4063 | ||
15bda425 JL |
4064 | #define elf_backend_link_output_symbol_hook \ |
4065 | elf64_hppa_link_output_symbol_hook | |
4066 | ||
15bda425 JL |
4067 | #define elf_backend_want_got_plt 0 |
4068 | #define elf_backend_plt_readonly 0 | |
4069 | #define elf_backend_want_plt_sym 0 | |
4070 | #define elf_backend_got_header_size 0 | |
b34976b6 AM |
4071 | #define elf_backend_type_change_ok TRUE |
4072 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
4073 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
4074 | #define elf_backend_rela_normal 1 | |
29ef7005 | 4075 | #define elf_backend_special_sections elf64_hppa_special_sections |
8a696751 | 4076 | #define elf_backend_action_discarded elf_hppa_action_discarded |
d97a8924 | 4077 | #define elf_backend_section_from_phdr elf64_hppa_section_from_phdr |
15bda425 | 4078 | |
83d1651b L |
4079 | #define elf64_bed elf64_hppa_hpux_bed |
4080 | ||
15bda425 | 4081 | #include "elf64-target.h" |
d952f17a AM |
4082 | |
4083 | #undef TARGET_BIG_SYM | |
6d00b590 | 4084 | #define TARGET_BIG_SYM hppa_elf64_linux_vec |
d952f17a AM |
4085 | #undef TARGET_BIG_NAME |
4086 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
d1036acb | 4087 | #undef ELF_OSABI |
9c55345c | 4088 | #define ELF_OSABI ELFOSABI_GNU |
83d1651b L |
4089 | #undef elf64_bed |
4090 | #define elf64_bed elf64_hppa_linux_bed | |
df3a023b AM |
4091 | #undef elf_backend_special_sections |
4092 | #define elf_backend_special_sections (elf64_hppa_special_sections + 1) | |
d952f17a | 4093 | |
d952f17a | 4094 | #include "elf64-target.h" |