Commit | Line | Data |
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b352eebf | 1 | /* Support for HPPA 64-bit ELF |
5a580b3a AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 |
3 | Free Software Foundation, Inc. | |
15bda425 | 4 | |
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
15bda425 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
15bda425 | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
15bda425 | 16 | |
ae9a127f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
15bda425 | 20 | |
3ef20aaa | 21 | #include "alloca-conf.h" |
15bda425 JL |
22 | #include "bfd.h" |
23 | #include "sysdep.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/hppa.h" | |
27 | #include "libhppa.h" | |
28 | #include "elf64-hppa.h" | |
29 | #define ARCH_SIZE 64 | |
30 | ||
31 | #define PLT_ENTRY_SIZE 0x10 | |
32 | #define DLT_ENTRY_SIZE 0x8 | |
33 | #define OPD_ENTRY_SIZE 0x20 | |
fe8bc63d | 34 | |
15bda425 JL |
35 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
36 | ||
37 | /* The stub is supposed to load the target address and target's DP | |
38 | value out of the PLT, then do an external branch to the target | |
39 | address. | |
40 | ||
41 | LDD PLTOFF(%r27),%r1 | |
42 | BVE (%r1) | |
43 | LDD PLTOFF+8(%r27),%r27 | |
44 | ||
45 | Note that we must use the LDD with a 14 bit displacement, not the one | |
46 | with a 5 bit displacement. */ | |
47 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, | |
48 | 0x53, 0x7b, 0x00, 0x00 }; | |
49 | ||
50 | struct elf64_hppa_dyn_hash_entry | |
51 | { | |
52 | struct bfd_hash_entry root; | |
53 | ||
54 | /* Offsets for this symbol in various linker sections. */ | |
55 | bfd_vma dlt_offset; | |
56 | bfd_vma plt_offset; | |
57 | bfd_vma opd_offset; | |
58 | bfd_vma stub_offset; | |
59 | ||
edd21aca | 60 | /* The symbol table entry, if any, that this was derived from. */ |
15bda425 JL |
61 | struct elf_link_hash_entry *h; |
62 | ||
63 | /* The index of the (possibly local) symbol in the input bfd and its | |
64 | associated BFD. Needed so that we can have relocs against local | |
65 | symbols in shared libraries. */ | |
dc810e39 | 66 | long sym_indx; |
15bda425 JL |
67 | bfd *owner; |
68 | ||
69 | /* Dynamic symbols may need to have two different values. One for | |
70 | the dynamic symbol table, one for the normal symbol table. | |
71 | ||
72 | In such cases we store the symbol's real value and section | |
73 | index here so we can restore the real value before we write | |
74 | the normal symbol table. */ | |
75 | bfd_vma st_value; | |
76 | int st_shndx; | |
77 | ||
78 | /* Used to count non-got, non-plt relocations for delayed sizing | |
79 | of relocation sections. */ | |
80 | struct elf64_hppa_dyn_reloc_entry | |
81 | { | |
82 | /* Next relocation in the chain. */ | |
83 | struct elf64_hppa_dyn_reloc_entry *next; | |
84 | ||
85 | /* The type of the relocation. */ | |
86 | int type; | |
87 | ||
88 | /* The input section of the relocation. */ | |
89 | asection *sec; | |
90 | ||
91 | /* The index of the section symbol for the input section of | |
92 | the relocation. Only needed when building shared libraries. */ | |
93 | int sec_symndx; | |
94 | ||
95 | /* The offset within the input section of the relocation. */ | |
96 | bfd_vma offset; | |
97 | ||
98 | /* The addend for the relocation. */ | |
99 | bfd_vma addend; | |
100 | ||
101 | } *reloc_entries; | |
102 | ||
103 | /* Nonzero if this symbol needs an entry in one of the linker | |
104 | sections. */ | |
105 | unsigned want_dlt; | |
106 | unsigned want_plt; | |
107 | unsigned want_opd; | |
108 | unsigned want_stub; | |
109 | }; | |
110 | ||
111 | struct elf64_hppa_dyn_hash_table | |
112 | { | |
113 | struct bfd_hash_table root; | |
114 | }; | |
115 | ||
116 | struct elf64_hppa_link_hash_table | |
117 | { | |
118 | struct elf_link_hash_table root; | |
119 | ||
120 | /* Shortcuts to get to the various linker defined sections. */ | |
121 | asection *dlt_sec; | |
122 | asection *dlt_rel_sec; | |
123 | asection *plt_sec; | |
124 | asection *plt_rel_sec; | |
125 | asection *opd_sec; | |
126 | asection *opd_rel_sec; | |
127 | asection *other_rel_sec; | |
128 | ||
129 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
130 | to slide __gp into the PLT section so that we can continue to use | |
131 | single DP relative instructions to load values out of the PLT. */ | |
132 | bfd_vma gp_offset; | |
133 | ||
134 | /* Note this is not strictly correct. We should create a stub section for | |
135 | each input section with calls. The stub section should be placed before | |
136 | the section with the call. */ | |
137 | asection *stub_sec; | |
138 | ||
139 | bfd_vma text_segment_base; | |
140 | bfd_vma data_segment_base; | |
141 | ||
142 | struct elf64_hppa_dyn_hash_table dyn_hash_table; | |
143 | ||
144 | /* We build tables to map from an input section back to its | |
145 | symbol index. This is the BFD for which we currently have | |
146 | a map. */ | |
147 | bfd *section_syms_bfd; | |
148 | ||
149 | /* Array of symbol numbers for each input section attached to the | |
150 | current BFD. */ | |
151 | int *section_syms; | |
152 | }; | |
153 | ||
154 | #define elf64_hppa_hash_table(p) \ | |
155 | ((struct elf64_hppa_link_hash_table *) ((p)->hash)) | |
156 | ||
157 | typedef struct bfd_hash_entry *(*new_hash_entry_func) | |
158 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
159 | ||
b34976b6 | 160 | static bfd_boolean elf64_hppa_dyn_hash_table_init |
15bda425 JL |
161 | PARAMS ((struct elf64_hppa_dyn_hash_table *ht, bfd *abfd, |
162 | new_hash_entry_func new)); | |
163 | static struct bfd_hash_entry *elf64_hppa_new_dyn_hash_entry | |
164 | PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table, | |
165 | const char *string)); | |
166 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create | |
167 | PARAMS ((bfd *abfd)); | |
168 | static struct elf64_hppa_dyn_hash_entry *elf64_hppa_dyn_hash_lookup | |
169 | PARAMS ((struct elf64_hppa_dyn_hash_table *table, const char *string, | |
b34976b6 | 170 | bfd_boolean create, bfd_boolean copy)); |
15bda425 JL |
171 | static void elf64_hppa_dyn_hash_traverse |
172 | PARAMS ((struct elf64_hppa_dyn_hash_table *table, | |
b34976b6 | 173 | bfd_boolean (*func) (struct elf64_hppa_dyn_hash_entry *, PTR), |
15bda425 JL |
174 | PTR info)); |
175 | ||
176 | static const char *get_dyn_name | |
d63b5ed9 | 177 | PARAMS ((bfd *, struct elf_link_hash_entry *, |
0ba2a60e | 178 | const Elf_Internal_Rela *, char **, size_t *)); |
15bda425 | 179 | |
15bda425 JL |
180 | /* This must follow the definitions of the various derived linker |
181 | hash tables and shared functions. */ | |
182 | #include "elf-hppa.h" | |
183 | ||
b34976b6 | 184 | static bfd_boolean elf64_hppa_object_p |
15bda425 JL |
185 | PARAMS ((bfd *)); |
186 | ||
b34976b6 | 187 | static bfd_boolean elf64_hppa_section_from_shdr |
947216bf | 188 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
15bda425 JL |
189 | |
190 | static void elf64_hppa_post_process_headers | |
191 | PARAMS ((bfd *, struct bfd_link_info *)); | |
192 | ||
b34976b6 | 193 | static bfd_boolean elf64_hppa_create_dynamic_sections |
15bda425 JL |
194 | PARAMS ((bfd *, struct bfd_link_info *)); |
195 | ||
b34976b6 | 196 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
15bda425 JL |
197 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
198 | ||
b34976b6 | 199 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
47b7c2db AM |
200 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
201 | ||
b34976b6 | 202 | static bfd_boolean elf64_hppa_size_dynamic_sections |
15bda425 JL |
203 | PARAMS ((bfd *, struct bfd_link_info *)); |
204 | ||
b34976b6 | 205 | static bfd_boolean elf64_hppa_link_output_symbol_hook |
754021d0 AM |
206 | PARAMS ((struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
207 | asection *, struct elf_link_hash_entry *)); | |
99c79b2e | 208 | |
b34976b6 | 209 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
15bda425 JL |
210 | PARAMS ((bfd *, struct bfd_link_info *, |
211 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
fe8bc63d | 212 | |
b34976b6 AM |
213 | static int elf64_hppa_additional_program_headers |
214 | PARAMS ((bfd *)); | |
99c79b2e | 215 | |
b34976b6 | 216 | static bfd_boolean elf64_hppa_modify_segment_map |
c84fca4d | 217 | PARAMS ((bfd *, struct bfd_link_info *)); |
99c79b2e | 218 | |
5ac81c74 JL |
219 | static enum elf_reloc_type_class elf64_hppa_reloc_type_class |
220 | PARAMS ((const Elf_Internal_Rela *)); | |
221 | ||
b34976b6 | 222 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
15bda425 JL |
223 | PARAMS ((bfd *, struct bfd_link_info *)); |
224 | ||
b34976b6 | 225 | static bfd_boolean elf64_hppa_check_relocs |
15bda425 JL |
226 | PARAMS ((bfd *, struct bfd_link_info *, |
227 | asection *, const Elf_Internal_Rela *)); | |
228 | ||
b34976b6 | 229 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
15bda425 JL |
230 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); |
231 | ||
b34976b6 | 232 | static bfd_boolean elf64_hppa_mark_exported_functions |
15bda425 JL |
233 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
234 | ||
b34976b6 | 235 | static bfd_boolean elf64_hppa_finalize_opd |
15bda425 JL |
236 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
237 | ||
b34976b6 | 238 | static bfd_boolean elf64_hppa_finalize_dlt |
15bda425 JL |
239 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
240 | ||
b34976b6 | 241 | static bfd_boolean allocate_global_data_dlt |
15bda425 JL |
242 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
243 | ||
b34976b6 | 244 | static bfd_boolean allocate_global_data_plt |
15bda425 JL |
245 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
246 | ||
b34976b6 | 247 | static bfd_boolean allocate_global_data_stub |
15bda425 JL |
248 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
249 | ||
b34976b6 | 250 | static bfd_boolean allocate_global_data_opd |
15bda425 JL |
251 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
252 | ||
b34976b6 | 253 | static bfd_boolean get_reloc_section |
15bda425 JL |
254 | PARAMS ((bfd *, struct elf64_hppa_link_hash_table *, asection *)); |
255 | ||
b34976b6 | 256 | static bfd_boolean count_dyn_reloc |
15bda425 JL |
257 | PARAMS ((bfd *, struct elf64_hppa_dyn_hash_entry *, |
258 | int, asection *, int, bfd_vma, bfd_vma)); | |
259 | ||
b34976b6 | 260 | static bfd_boolean allocate_dynrel_entries |
15bda425 JL |
261 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
262 | ||
b34976b6 | 263 | static bfd_boolean elf64_hppa_finalize_dynreloc |
15bda425 JL |
264 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
265 | ||
b34976b6 | 266 | static bfd_boolean get_opd |
15bda425 JL |
267 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
268 | ||
b34976b6 | 269 | static bfd_boolean get_plt |
15bda425 JL |
270 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
271 | ||
b34976b6 | 272 | static bfd_boolean get_dlt |
15bda425 JL |
273 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
274 | ||
b34976b6 | 275 | static bfd_boolean get_stub |
15bda425 JL |
276 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
277 | ||
3fab46d0 AM |
278 | static int elf64_hppa_elf_get_symbol_type |
279 | PARAMS ((Elf_Internal_Sym *, int)); | |
280 | ||
b34976b6 | 281 | static bfd_boolean |
15bda425 JL |
282 | elf64_hppa_dyn_hash_table_init (ht, abfd, new) |
283 | struct elf64_hppa_dyn_hash_table *ht; | |
edd21aca | 284 | bfd *abfd ATTRIBUTE_UNUSED; |
15bda425 JL |
285 | new_hash_entry_func new; |
286 | { | |
fe8bc63d | 287 | memset (ht, 0, sizeof (*ht)); |
15bda425 JL |
288 | return bfd_hash_table_init (&ht->root, new); |
289 | } | |
290 | ||
291 | static struct bfd_hash_entry* | |
292 | elf64_hppa_new_dyn_hash_entry (entry, table, string) | |
293 | struct bfd_hash_entry *entry; | |
294 | struct bfd_hash_table *table; | |
295 | const char *string; | |
296 | { | |
297 | struct elf64_hppa_dyn_hash_entry *ret; | |
298 | ret = (struct elf64_hppa_dyn_hash_entry *) entry; | |
299 | ||
300 | /* Allocate the structure if it has not already been allocated by a | |
301 | subclass. */ | |
302 | if (!ret) | |
303 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
304 | ||
305 | if (!ret) | |
306 | return 0; | |
307 | ||
308 | /* Initialize our local data. All zeros, and definitely easier | |
309 | than setting 8 bit fields. */ | |
fe8bc63d | 310 | memset (ret, 0, sizeof (*ret)); |
15bda425 JL |
311 | |
312 | /* Call the allocation method of the superclass. */ | |
313 | ret = ((struct elf64_hppa_dyn_hash_entry *) | |
314 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
315 | ||
316 | return &ret->root; | |
317 | } | |
318 | ||
319 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
320 | derived hash table to keep information specific to the PA ElF | |
321 | linker (without using static variables). */ | |
322 | ||
323 | static struct bfd_link_hash_table* | |
324 | elf64_hppa_hash_table_create (abfd) | |
325 | bfd *abfd; | |
326 | { | |
327 | struct elf64_hppa_link_hash_table *ret; | |
328 | ||
dc810e39 | 329 | ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret)); |
15bda425 JL |
330 | if (!ret) |
331 | return 0; | |
332 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
333 | _bfd_elf_link_hash_newfunc)) | |
334 | { | |
335 | bfd_release (abfd, ret); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd, | |
340 | elf64_hppa_new_dyn_hash_entry)) | |
341 | return 0; | |
342 | return &ret->root.root; | |
343 | } | |
344 | ||
345 | /* Look up an entry in a PA64 ELF linker hash table. */ | |
346 | ||
347 | static struct elf64_hppa_dyn_hash_entry * | |
348 | elf64_hppa_dyn_hash_lookup(table, string, create, copy) | |
349 | struct elf64_hppa_dyn_hash_table *table; | |
350 | const char *string; | |
b34976b6 | 351 | bfd_boolean create, copy; |
15bda425 JL |
352 | { |
353 | return ((struct elf64_hppa_dyn_hash_entry *) | |
354 | bfd_hash_lookup (&table->root, string, create, copy)); | |
355 | } | |
356 | ||
357 | /* Traverse a PA64 ELF linker hash table. */ | |
358 | ||
359 | static void | |
360 | elf64_hppa_dyn_hash_traverse (table, func, info) | |
361 | struct elf64_hppa_dyn_hash_table *table; | |
b34976b6 | 362 | bfd_boolean (*func) PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
15bda425 JL |
363 | PTR info; |
364 | { | |
365 | (bfd_hash_traverse | |
366 | (&table->root, | |
b34976b6 | 367 | (bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) func, |
15bda425 JL |
368 | info)); |
369 | } | |
370 | \f | |
371 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. | |
372 | ||
373 | Additionally we set the default architecture and machine. */ | |
b34976b6 | 374 | static bfd_boolean |
15bda425 JL |
375 | elf64_hppa_object_p (abfd) |
376 | bfd *abfd; | |
377 | { | |
24a5e751 L |
378 | Elf_Internal_Ehdr * i_ehdrp; |
379 | unsigned int flags; | |
d9634ba1 | 380 | |
24a5e751 L |
381 | i_ehdrp = elf_elfheader (abfd); |
382 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) | |
383 | { | |
6c21aa76 NC |
384 | /* GCC on hppa-linux produces binaries with OSABI=Linux, |
385 | but the kernel produces corefiles with OSABI=SysV. */ | |
386 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX && | |
387 | i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 388 | return FALSE; |
24a5e751 L |
389 | } |
390 | else | |
391 | { | |
392 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX) | |
b34976b6 | 393 | return FALSE; |
24a5e751 L |
394 | } |
395 | ||
396 | flags = i_ehdrp->e_flags; | |
d9634ba1 AM |
397 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
398 | { | |
399 | case EFA_PARISC_1_0: | |
400 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
401 | case EFA_PARISC_1_1: | |
402 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
403 | case EFA_PARISC_2_0: | |
404 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
405 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
406 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
407 | } | |
408 | /* Don't be fussy. */ | |
b34976b6 | 409 | return TRUE; |
15bda425 JL |
410 | } |
411 | ||
412 | /* Given section type (hdr->sh_type), return a boolean indicating | |
413 | whether or not the section is an elf64-hppa specific section. */ | |
b34976b6 | 414 | static bfd_boolean |
15bda425 JL |
415 | elf64_hppa_section_from_shdr (abfd, hdr, name) |
416 | bfd *abfd; | |
947216bf | 417 | Elf_Internal_Shdr *hdr; |
90937f86 | 418 | const char *name; |
15bda425 JL |
419 | { |
420 | asection *newsect; | |
421 | ||
422 | switch (hdr->sh_type) | |
423 | { | |
424 | case SHT_PARISC_EXT: | |
425 | if (strcmp (name, ".PARISC.archext") != 0) | |
b34976b6 | 426 | return FALSE; |
15bda425 JL |
427 | break; |
428 | case SHT_PARISC_UNWIND: | |
429 | if (strcmp (name, ".PARISC.unwind") != 0) | |
b34976b6 | 430 | return FALSE; |
15bda425 JL |
431 | break; |
432 | case SHT_PARISC_DOC: | |
433 | case SHT_PARISC_ANNOT: | |
434 | default: | |
b34976b6 | 435 | return FALSE; |
15bda425 JL |
436 | } |
437 | ||
438 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 439 | return FALSE; |
15bda425 JL |
440 | newsect = hdr->bfd_section; |
441 | ||
b34976b6 | 442 | return TRUE; |
15bda425 JL |
443 | } |
444 | ||
15bda425 | 445 | /* Construct a string for use in the elf64_hppa_dyn_hash_table. The |
fe8bc63d | 446 | name describes what was once potentially anonymous memory. We |
15bda425 JL |
447 | allocate memory as necessary, possibly reusing PBUF/PLEN. */ |
448 | ||
449 | static const char * | |
d63b5ed9 DA |
450 | get_dyn_name (abfd, h, rel, pbuf, plen) |
451 | bfd *abfd; | |
15bda425 JL |
452 | struct elf_link_hash_entry *h; |
453 | const Elf_Internal_Rela *rel; | |
454 | char **pbuf; | |
455 | size_t *plen; | |
456 | { | |
d63b5ed9 | 457 | asection *sec = abfd->sections; |
15bda425 JL |
458 | size_t nlen, tlen; |
459 | char *buf; | |
460 | size_t len; | |
461 | ||
462 | if (h && rel->r_addend == 0) | |
463 | return h->root.root.string; | |
464 | ||
465 | if (h) | |
466 | nlen = strlen (h->root.root.string); | |
467 | else | |
0ba2a60e AM |
468 | nlen = 8 + 1 + sizeof (rel->r_info) * 2 - 8; |
469 | tlen = nlen + 1 + sizeof (rel->r_addend) * 2 + 1; | |
15bda425 JL |
470 | |
471 | len = *plen; | |
472 | buf = *pbuf; | |
473 | if (len < tlen) | |
474 | { | |
475 | if (buf) | |
476 | free (buf); | |
477 | *pbuf = buf = malloc (tlen); | |
478 | *plen = len = tlen; | |
479 | if (!buf) | |
480 | return NULL; | |
481 | } | |
482 | ||
483 | if (h) | |
484 | { | |
485 | memcpy (buf, h->root.root.string, nlen); | |
0ba2a60e | 486 | buf[nlen++] = '+'; |
15bda425 JL |
487 | sprintf_vma (buf + nlen, rel->r_addend); |
488 | } | |
489 | else | |
490 | { | |
0ba2a60e AM |
491 | nlen = sprintf (buf, "%x:%lx", |
492 | sec->id & 0xffffffff, | |
493 | (long) ELF64_R_SYM (rel->r_info)); | |
15bda425 JL |
494 | if (rel->r_addend) |
495 | { | |
496 | buf[nlen++] = '+'; | |
497 | sprintf_vma (buf + nlen, rel->r_addend); | |
498 | } | |
499 | } | |
500 | ||
501 | return buf; | |
502 | } | |
503 | ||
504 | /* SEC is a section containing relocs for an input BFD when linking; return | |
505 | a suitable section for holding relocs in the output BFD for a link. */ | |
506 | ||
b34976b6 | 507 | static bfd_boolean |
15bda425 JL |
508 | get_reloc_section (abfd, hppa_info, sec) |
509 | bfd *abfd; | |
510 | struct elf64_hppa_link_hash_table *hppa_info; | |
511 | asection *sec; | |
512 | { | |
513 | const char *srel_name; | |
514 | asection *srel; | |
515 | bfd *dynobj; | |
516 | ||
517 | srel_name = (bfd_elf_string_from_elf_section | |
518 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
519 | elf_section_data(sec)->rel_hdr.sh_name)); | |
520 | if (srel_name == NULL) | |
b34976b6 | 521 | return FALSE; |
15bda425 JL |
522 | |
523 | BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0 | |
524 | && strcmp (bfd_get_section_name (abfd, sec), | |
525 | srel_name+5) == 0) | |
526 | || (strncmp (srel_name, ".rel", 4) == 0 | |
527 | && strcmp (bfd_get_section_name (abfd, sec), | |
528 | srel_name+4) == 0)); | |
529 | ||
530 | dynobj = hppa_info->root.dynobj; | |
531 | if (!dynobj) | |
532 | hppa_info->root.dynobj = dynobj = abfd; | |
533 | ||
534 | srel = bfd_get_section_by_name (dynobj, srel_name); | |
535 | if (srel == NULL) | |
536 | { | |
537 | srel = bfd_make_section (dynobj, srel_name); | |
538 | if (srel == NULL | |
539 | || !bfd_set_section_flags (dynobj, srel, | |
540 | (SEC_ALLOC | |
541 | | SEC_LOAD | |
542 | | SEC_HAS_CONTENTS | |
543 | | SEC_IN_MEMORY | |
544 | | SEC_LINKER_CREATED | |
545 | | SEC_READONLY)) | |
546 | || !bfd_set_section_alignment (dynobj, srel, 3)) | |
b34976b6 | 547 | return FALSE; |
15bda425 JL |
548 | } |
549 | ||
550 | hppa_info->other_rel_sec = srel; | |
b34976b6 | 551 | return TRUE; |
15bda425 JL |
552 | } |
553 | ||
fe8bc63d | 554 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
15bda425 JL |
555 | |
556 | We use this to keep a record of all the FPTR relocations against a | |
557 | particular symbol so that we can create FPTR relocations in the | |
558 | output file. */ | |
559 | ||
b34976b6 | 560 | static bfd_boolean |
15bda425 JL |
561 | count_dyn_reloc (abfd, dyn_h, type, sec, sec_symndx, offset, addend) |
562 | bfd *abfd; | |
563 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
564 | int type; | |
565 | asection *sec; | |
566 | int sec_symndx; | |
567 | bfd_vma offset; | |
568 | bfd_vma addend; | |
569 | { | |
570 | struct elf64_hppa_dyn_reloc_entry *rent; | |
571 | ||
572 | rent = (struct elf64_hppa_dyn_reloc_entry *) | |
dc810e39 | 573 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
15bda425 | 574 | if (!rent) |
b34976b6 | 575 | return FALSE; |
15bda425 JL |
576 | |
577 | rent->next = dyn_h->reloc_entries; | |
578 | rent->type = type; | |
579 | rent->sec = sec; | |
580 | rent->sec_symndx = sec_symndx; | |
581 | rent->offset = offset; | |
582 | rent->addend = addend; | |
583 | dyn_h->reloc_entries = rent; | |
584 | ||
b34976b6 | 585 | return TRUE; |
15bda425 JL |
586 | } |
587 | ||
588 | /* Scan the RELOCS and record the type of dynamic entries that each | |
589 | referenced symbol needs. */ | |
590 | ||
b34976b6 | 591 | static bfd_boolean |
15bda425 JL |
592 | elf64_hppa_check_relocs (abfd, info, sec, relocs) |
593 | bfd *abfd; | |
594 | struct bfd_link_info *info; | |
595 | asection *sec; | |
596 | const Elf_Internal_Rela *relocs; | |
597 | { | |
598 | struct elf64_hppa_link_hash_table *hppa_info; | |
599 | const Elf_Internal_Rela *relend; | |
600 | Elf_Internal_Shdr *symtab_hdr; | |
601 | const Elf_Internal_Rela *rel; | |
602 | asection *dlt, *plt, *stubs; | |
603 | char *buf; | |
604 | size_t buf_len; | |
605 | int sec_symndx; | |
606 | ||
1049f94e | 607 | if (info->relocatable) |
b34976b6 | 608 | return TRUE; |
15bda425 JL |
609 | |
610 | /* If this is the first dynamic object found in the link, create | |
611 | the special sections required for dynamic linking. */ | |
612 | if (! elf_hash_table (info)->dynamic_sections_created) | |
613 | { | |
45d6a902 | 614 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
b34976b6 | 615 | return FALSE; |
15bda425 JL |
616 | } |
617 | ||
618 | hppa_info = elf64_hppa_hash_table (info); | |
619 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
620 | ||
621 | /* If necessary, build a new table holding section symbols indices | |
6cdc0ccc | 622 | for this BFD. */ |
fe8bc63d | 623 | |
15bda425 JL |
624 | if (info->shared && hppa_info->section_syms_bfd != abfd) |
625 | { | |
832d951b | 626 | unsigned long i; |
9ad5cbcf | 627 | unsigned int highest_shndx; |
6cdc0ccc AM |
628 | Elf_Internal_Sym *local_syms = NULL; |
629 | Elf_Internal_Sym *isym, *isymend; | |
dc810e39 | 630 | bfd_size_type amt; |
15bda425 JL |
631 | |
632 | /* We're done with the old cache of section index to section symbol | |
633 | index information. Free it. | |
634 | ||
635 | ?!? Note we leak the last section_syms array. Presumably we | |
636 | could free it in one of the later routines in this file. */ | |
637 | if (hppa_info->section_syms) | |
638 | free (hppa_info->section_syms); | |
639 | ||
6cdc0ccc AM |
640 | /* Read this BFD's local symbols. */ |
641 | if (symtab_hdr->sh_info != 0) | |
47b7c2db | 642 | { |
6cdc0ccc AM |
643 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
644 | if (local_syms == NULL) | |
645 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
646 | symtab_hdr->sh_info, 0, | |
647 | NULL, NULL, NULL); | |
648 | if (local_syms == NULL) | |
b34976b6 | 649 | return FALSE; |
9ad5cbcf AM |
650 | } |
651 | ||
6cdc0ccc | 652 | /* Record the highest section index referenced by the local symbols. */ |
15bda425 | 653 | highest_shndx = 0; |
6cdc0ccc AM |
654 | isymend = local_syms + symtab_hdr->sh_info; |
655 | for (isym = local_syms; isym < isymend; isym++) | |
15bda425 | 656 | { |
15bda425 JL |
657 | if (isym->st_shndx > highest_shndx) |
658 | highest_shndx = isym->st_shndx; | |
659 | } | |
660 | ||
15bda425 JL |
661 | /* Allocate an array to hold the section index to section symbol index |
662 | mapping. Bump by one since we start counting at zero. */ | |
663 | highest_shndx++; | |
dc810e39 AM |
664 | amt = highest_shndx; |
665 | amt *= sizeof (int); | |
666 | hppa_info->section_syms = (int *) bfd_malloc (amt); | |
15bda425 JL |
667 | |
668 | /* Now walk the local symbols again. If we find a section symbol, | |
669 | record the index of the symbol into the section_syms array. */ | |
6cdc0ccc | 670 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
15bda425 JL |
671 | { |
672 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
673 | hppa_info->section_syms[isym->st_shndx] = i; | |
674 | } | |
675 | ||
6cdc0ccc AM |
676 | /* We are finished with the local symbols. */ |
677 | if (local_syms != NULL | |
678 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
679 | { | |
680 | if (! info->keep_memory) | |
681 | free (local_syms); | |
682 | else | |
683 | { | |
684 | /* Cache the symbols for elf_link_input_bfd. */ | |
685 | symtab_hdr->contents = (unsigned char *) local_syms; | |
686 | } | |
687 | } | |
15bda425 JL |
688 | |
689 | /* Record which BFD we built the section_syms mapping for. */ | |
690 | hppa_info->section_syms_bfd = abfd; | |
691 | } | |
692 | ||
693 | /* Record the symbol index for this input section. We may need it for | |
694 | relocations when building shared libraries. When not building shared | |
695 | libraries this value is never really used, but assign it to zero to | |
696 | prevent out of bounds memory accesses in other routines. */ | |
697 | if (info->shared) | |
698 | { | |
699 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
700 | ||
701 | /* If we did not find a section symbol for this section, then | |
702 | something went terribly wrong above. */ | |
703 | if (sec_symndx == -1) | |
b34976b6 | 704 | return FALSE; |
15bda425 JL |
705 | |
706 | sec_symndx = hppa_info->section_syms[sec_symndx]; | |
707 | } | |
708 | else | |
709 | sec_symndx = 0; | |
fe8bc63d | 710 | |
15bda425 JL |
711 | dlt = plt = stubs = NULL; |
712 | buf = NULL; | |
713 | buf_len = 0; | |
714 | ||
715 | relend = relocs + sec->reloc_count; | |
716 | for (rel = relocs; rel < relend; ++rel) | |
717 | { | |
560e09e9 NC |
718 | enum |
719 | { | |
720 | NEED_DLT = 1, | |
721 | NEED_PLT = 2, | |
722 | NEED_STUB = 4, | |
723 | NEED_OPD = 8, | |
724 | NEED_DYNREL = 16, | |
725 | }; | |
15bda425 JL |
726 | |
727 | struct elf_link_hash_entry *h = NULL; | |
728 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
729 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
730 | int need_entry; | |
731 | const char *addr_name; | |
b34976b6 | 732 | bfd_boolean maybe_dynamic; |
15bda425 JL |
733 | int dynrel_type = R_PARISC_NONE; |
734 | static reloc_howto_type *howto; | |
735 | ||
736 | if (r_symndx >= symtab_hdr->sh_info) | |
737 | { | |
738 | /* We're dealing with a global symbol -- find its hash entry | |
739 | and mark it as being referenced. */ | |
740 | long indx = r_symndx - symtab_hdr->sh_info; | |
741 | h = elf_sym_hashes (abfd)[indx]; | |
742 | while (h->root.type == bfd_link_hash_indirect | |
743 | || h->root.type == bfd_link_hash_warning) | |
744 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
745 | ||
f5385ebf | 746 | h->ref_regular = 1; |
15bda425 JL |
747 | } |
748 | ||
749 | /* We can only get preliminary data on whether a symbol is | |
750 | locally or externally defined, as not all of the input files | |
751 | have yet been processed. Do something with what we know, as | |
752 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 753 | maybe_dynamic = FALSE; |
671bae9c | 754 | if (h && ((info->shared |
f5385ebf AM |
755 | && (!info->symbolic |
756 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
757 | || !h->def_regular | |
15bda425 | 758 | || h->root.type == bfd_link_hash_defweak)) |
b34976b6 | 759 | maybe_dynamic = TRUE; |
15bda425 JL |
760 | |
761 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); | |
762 | need_entry = 0; | |
763 | switch (howto->type) | |
764 | { | |
765 | /* These are simple indirect references to symbols through the | |
766 | DLT. We need to create a DLT entry for any symbols which | |
767 | appears in a DLTIND relocation. */ | |
768 | case R_PARISC_DLTIND21L: | |
769 | case R_PARISC_DLTIND14R: | |
770 | case R_PARISC_DLTIND14F: | |
771 | case R_PARISC_DLTIND14WR: | |
772 | case R_PARISC_DLTIND14DR: | |
773 | need_entry = NEED_DLT; | |
774 | break; | |
775 | ||
776 | /* ?!? These need a DLT entry. But I have no idea what to do with | |
777 | the "link time TP value. */ | |
778 | case R_PARISC_LTOFF_TP21L: | |
779 | case R_PARISC_LTOFF_TP14R: | |
780 | case R_PARISC_LTOFF_TP14F: | |
781 | case R_PARISC_LTOFF_TP64: | |
782 | case R_PARISC_LTOFF_TP14WR: | |
783 | case R_PARISC_LTOFF_TP14DR: | |
784 | case R_PARISC_LTOFF_TP16F: | |
785 | case R_PARISC_LTOFF_TP16WF: | |
786 | case R_PARISC_LTOFF_TP16DF: | |
787 | need_entry = NEED_DLT; | |
788 | break; | |
789 | ||
790 | /* These are function calls. Depending on their precise target we | |
791 | may need to make a stub for them. The stub uses the PLT, so we | |
792 | need to create PLT entries for these symbols too. */ | |
832d951b | 793 | case R_PARISC_PCREL12F: |
15bda425 JL |
794 | case R_PARISC_PCREL17F: |
795 | case R_PARISC_PCREL22F: | |
796 | case R_PARISC_PCREL32: | |
797 | case R_PARISC_PCREL64: | |
798 | case R_PARISC_PCREL21L: | |
799 | case R_PARISC_PCREL17R: | |
800 | case R_PARISC_PCREL17C: | |
801 | case R_PARISC_PCREL14R: | |
802 | case R_PARISC_PCREL14F: | |
803 | case R_PARISC_PCREL22C: | |
804 | case R_PARISC_PCREL14WR: | |
805 | case R_PARISC_PCREL14DR: | |
806 | case R_PARISC_PCREL16F: | |
807 | case R_PARISC_PCREL16WF: | |
808 | case R_PARISC_PCREL16DF: | |
809 | need_entry = (NEED_PLT | NEED_STUB); | |
810 | break; | |
811 | ||
812 | case R_PARISC_PLTOFF21L: | |
813 | case R_PARISC_PLTOFF14R: | |
814 | case R_PARISC_PLTOFF14F: | |
815 | case R_PARISC_PLTOFF14WR: | |
816 | case R_PARISC_PLTOFF14DR: | |
817 | case R_PARISC_PLTOFF16F: | |
818 | case R_PARISC_PLTOFF16WF: | |
819 | case R_PARISC_PLTOFF16DF: | |
820 | need_entry = (NEED_PLT); | |
821 | break; | |
822 | ||
823 | case R_PARISC_DIR64: | |
824 | if (info->shared || maybe_dynamic) | |
825 | need_entry = (NEED_DYNREL); | |
826 | dynrel_type = R_PARISC_DIR64; | |
827 | break; | |
828 | ||
829 | /* This is an indirect reference through the DLT to get the address | |
830 | of a OPD descriptor. Thus we need to make a DLT entry that points | |
831 | to an OPD entry. */ | |
832 | case R_PARISC_LTOFF_FPTR21L: | |
833 | case R_PARISC_LTOFF_FPTR14R: | |
834 | case R_PARISC_LTOFF_FPTR14WR: | |
835 | case R_PARISC_LTOFF_FPTR14DR: | |
836 | case R_PARISC_LTOFF_FPTR32: | |
837 | case R_PARISC_LTOFF_FPTR64: | |
838 | case R_PARISC_LTOFF_FPTR16F: | |
839 | case R_PARISC_LTOFF_FPTR16WF: | |
840 | case R_PARISC_LTOFF_FPTR16DF: | |
841 | if (info->shared || maybe_dynamic) | |
842 | need_entry = (NEED_DLT | NEED_OPD); | |
843 | else | |
844 | need_entry = (NEED_DLT | NEED_OPD); | |
845 | dynrel_type = R_PARISC_FPTR64; | |
846 | break; | |
847 | ||
848 | /* This is a simple OPD entry. */ | |
849 | case R_PARISC_FPTR64: | |
850 | if (info->shared || maybe_dynamic) | |
851 | need_entry = (NEED_OPD | NEED_DYNREL); | |
852 | else | |
853 | need_entry = (NEED_OPD); | |
854 | dynrel_type = R_PARISC_FPTR64; | |
855 | break; | |
856 | ||
857 | /* Add more cases as needed. */ | |
858 | } | |
859 | ||
860 | if (!need_entry) | |
861 | continue; | |
862 | ||
863 | /* Collect a canonical name for this address. */ | |
d63b5ed9 | 864 | addr_name = get_dyn_name (abfd, h, rel, &buf, &buf_len); |
15bda425 JL |
865 | |
866 | /* Collect the canonical entry data for this address. */ | |
867 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 868 | addr_name, TRUE, TRUE); |
15bda425 JL |
869 | BFD_ASSERT (dyn_h); |
870 | ||
871 | /* Stash away enough information to be able to find this symbol | |
872 | regardless of whether or not it is local or global. */ | |
873 | dyn_h->h = h; | |
874 | dyn_h->owner = abfd; | |
875 | dyn_h->sym_indx = r_symndx; | |
876 | ||
877 | /* ?!? We may need to do some error checking in here. */ | |
878 | /* Create what's needed. */ | |
879 | if (need_entry & NEED_DLT) | |
880 | { | |
881 | if (! hppa_info->dlt_sec | |
882 | && ! get_dlt (abfd, info, hppa_info)) | |
883 | goto err_out; | |
884 | dyn_h->want_dlt = 1; | |
885 | } | |
886 | ||
887 | if (need_entry & NEED_PLT) | |
888 | { | |
889 | if (! hppa_info->plt_sec | |
890 | && ! get_plt (abfd, info, hppa_info)) | |
891 | goto err_out; | |
892 | dyn_h->want_plt = 1; | |
893 | } | |
894 | ||
895 | if (need_entry & NEED_STUB) | |
896 | { | |
897 | if (! hppa_info->stub_sec | |
898 | && ! get_stub (abfd, info, hppa_info)) | |
899 | goto err_out; | |
900 | dyn_h->want_stub = 1; | |
901 | } | |
902 | ||
903 | if (need_entry & NEED_OPD) | |
904 | { | |
905 | if (! hppa_info->opd_sec | |
906 | && ! get_opd (abfd, info, hppa_info)) | |
907 | goto err_out; | |
908 | ||
909 | dyn_h->want_opd = 1; | |
910 | ||
911 | /* FPTRs are not allocated by the dynamic linker for PA64, though | |
912 | it is possible that will change in the future. */ | |
fe8bc63d | 913 | |
15bda425 JL |
914 | /* This could be a local function that had its address taken, in |
915 | which case H will be NULL. */ | |
916 | if (h) | |
f5385ebf | 917 | h->needs_plt = 1; |
15bda425 JL |
918 | } |
919 | ||
920 | /* Add a new dynamic relocation to the chain of dynamic | |
921 | relocations for this symbol. */ | |
922 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
923 | { | |
924 | if (! hppa_info->other_rel_sec | |
925 | && ! get_reloc_section (abfd, hppa_info, sec)) | |
926 | goto err_out; | |
927 | ||
928 | if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec, | |
929 | sec_symndx, rel->r_offset, rel->r_addend)) | |
930 | goto err_out; | |
931 | ||
932 | /* If we are building a shared library and we just recorded | |
933 | a dynamic R_PARISC_FPTR64 relocation, then make sure the | |
934 | section symbol for this section ends up in the dynamic | |
935 | symbol table. */ | |
936 | if (info->shared && dynrel_type == R_PARISC_FPTR64 | |
c152c796 | 937 | && ! (bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 938 | (info, abfd, sec_symndx))) |
b34976b6 | 939 | return FALSE; |
15bda425 JL |
940 | } |
941 | } | |
942 | ||
943 | if (buf) | |
944 | free (buf); | |
b34976b6 | 945 | return TRUE; |
15bda425 JL |
946 | |
947 | err_out: | |
948 | if (buf) | |
949 | free (buf); | |
b34976b6 | 950 | return FALSE; |
15bda425 JL |
951 | } |
952 | ||
953 | struct elf64_hppa_allocate_data | |
954 | { | |
955 | struct bfd_link_info *info; | |
956 | bfd_size_type ofs; | |
957 | }; | |
958 | ||
959 | /* Should we do dynamic things to this symbol? */ | |
960 | ||
b34976b6 | 961 | static bfd_boolean |
15bda425 JL |
962 | elf64_hppa_dynamic_symbol_p (h, info) |
963 | struct elf_link_hash_entry *h; | |
964 | struct bfd_link_info *info; | |
965 | { | |
986a241f RH |
966 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
967 | and relocations that retrieve a function descriptor? Assume the | |
968 | worst for now. */ | |
969 | if (_bfd_elf_dynamic_symbol_p (h, info, 1)) | |
970 | { | |
971 | /* ??? Why is this here and not elsewhere is_local_label_name. */ | |
972 | if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$') | |
973 | return FALSE; | |
15bda425 | 974 | |
986a241f RH |
975 | return TRUE; |
976 | } | |
977 | else | |
b34976b6 | 978 | return FALSE; |
15bda425 JL |
979 | } |
980 | ||
4cc11e76 | 981 | /* Mark all functions exported by this file so that we can later allocate |
15bda425 JL |
982 | entries in .opd for them. */ |
983 | ||
b34976b6 | 984 | static bfd_boolean |
15bda425 JL |
985 | elf64_hppa_mark_exported_functions (h, data) |
986 | struct elf_link_hash_entry *h; | |
987 | PTR data; | |
988 | { | |
989 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
990 | struct elf64_hppa_link_hash_table *hppa_info; | |
991 | ||
992 | hppa_info = elf64_hppa_hash_table (info); | |
993 | ||
e92d460e AM |
994 | if (h->root.type == bfd_link_hash_warning) |
995 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
996 | ||
15bda425 JL |
997 | if (h |
998 | && (h->root.type == bfd_link_hash_defined | |
999 | || h->root.type == bfd_link_hash_defweak) | |
1000 | && h->root.u.def.section->output_section != NULL | |
1001 | && h->type == STT_FUNC) | |
1002 | { | |
1003 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1004 | ||
1005 | /* Add this symbol to the PA64 linker hash table. */ | |
1006 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1007 | h->root.root.string, TRUE, TRUE); |
15bda425 JL |
1008 | BFD_ASSERT (dyn_h); |
1009 | dyn_h->h = h; | |
1010 | ||
1011 | if (! hppa_info->opd_sec | |
1012 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) | |
b34976b6 | 1013 | return FALSE; |
15bda425 JL |
1014 | |
1015 | dyn_h->want_opd = 1; | |
832d951b AM |
1016 | /* Put a flag here for output_symbol_hook. */ |
1017 | dyn_h->st_shndx = -1; | |
f5385ebf | 1018 | h->needs_plt = 1; |
15bda425 JL |
1019 | } |
1020 | ||
b34976b6 | 1021 | return TRUE; |
15bda425 JL |
1022 | } |
1023 | ||
1024 | /* Allocate space for a DLT entry. */ | |
1025 | ||
b34976b6 | 1026 | static bfd_boolean |
15bda425 JL |
1027 | allocate_global_data_dlt (dyn_h, data) |
1028 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1029 | PTR data; | |
1030 | { | |
1031 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1032 | ||
1033 | if (dyn_h->want_dlt) | |
1034 | { | |
1035 | struct elf_link_hash_entry *h = dyn_h->h; | |
1036 | ||
1037 | if (x->info->shared) | |
1038 | { | |
1039 | /* Possibly add the symbol to the local dynamic symbol | |
1040 | table since we might need to create a dynamic relocation | |
1041 | against it. */ | |
1042 | if (! h | |
47b7c2db | 1043 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)) |
15bda425 JL |
1044 | { |
1045 | bfd *owner; | |
1046 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1047 | ||
c152c796 | 1048 | if (! (bfd_elf_link_record_local_dynamic_symbol |
dc810e39 | 1049 | (x->info, owner, dyn_h->sym_indx))) |
b34976b6 | 1050 | return FALSE; |
15bda425 JL |
1051 | } |
1052 | } | |
1053 | ||
1054 | dyn_h->dlt_offset = x->ofs; | |
1055 | x->ofs += DLT_ENTRY_SIZE; | |
1056 | } | |
b34976b6 | 1057 | return TRUE; |
15bda425 JL |
1058 | } |
1059 | ||
1060 | /* Allocate space for a DLT.PLT entry. */ | |
1061 | ||
b34976b6 | 1062 | static bfd_boolean |
15bda425 JL |
1063 | allocate_global_data_plt (dyn_h, data) |
1064 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1065 | PTR data; | |
1066 | { | |
1067 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1068 | ||
1069 | if (dyn_h->want_plt | |
1070 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1071 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1072 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1073 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1074 | { | |
1075 | dyn_h->plt_offset = x->ofs; | |
1076 | x->ofs += PLT_ENTRY_SIZE; | |
1077 | if (dyn_h->plt_offset < 0x2000) | |
1078 | elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset; | |
1079 | } | |
1080 | else | |
1081 | dyn_h->want_plt = 0; | |
1082 | ||
b34976b6 | 1083 | return TRUE; |
15bda425 JL |
1084 | } |
1085 | ||
1086 | /* Allocate space for a STUB entry. */ | |
1087 | ||
b34976b6 | 1088 | static bfd_boolean |
15bda425 JL |
1089 | allocate_global_data_stub (dyn_h, data) |
1090 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1091 | PTR data; | |
1092 | { | |
1093 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1094 | ||
1095 | if (dyn_h->want_stub | |
1096 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1097 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1098 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1099 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1100 | { | |
1101 | dyn_h->stub_offset = x->ofs; | |
1102 | x->ofs += sizeof (plt_stub); | |
1103 | } | |
1104 | else | |
1105 | dyn_h->want_stub = 0; | |
b34976b6 | 1106 | return TRUE; |
15bda425 JL |
1107 | } |
1108 | ||
1109 | /* Allocate space for a FPTR entry. */ | |
1110 | ||
b34976b6 | 1111 | static bfd_boolean |
15bda425 JL |
1112 | allocate_global_data_opd (dyn_h, data) |
1113 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1114 | PTR data; | |
1115 | { | |
1116 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1117 | ||
1118 | if (dyn_h->want_opd) | |
1119 | { | |
1120 | struct elf_link_hash_entry *h = dyn_h->h; | |
fe8bc63d | 1121 | |
15bda425 JL |
1122 | if (h) |
1123 | while (h->root.type == bfd_link_hash_indirect | |
1124 | || h->root.type == bfd_link_hash_warning) | |
1125 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1126 | ||
1127 | /* We never need an opd entry for a symbol which is not | |
1128 | defined by this output file. */ | |
3db4b612 JL |
1129 | if (h && (h->root.type == bfd_link_hash_undefined |
1130 | || h->root.u.def.section->output_section == NULL)) | |
15bda425 JL |
1131 | dyn_h->want_opd = 0; |
1132 | ||
1133 | /* If we are creating a shared library, took the address of a local | |
1134 | function or might export this function from this object file, then | |
1135 | we have to create an opd descriptor. */ | |
1136 | else if (x->info->shared | |
1137 | || h == NULL | |
47b7c2db | 1138 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI) |
3db4b612 JL |
1139 | || (h->root.type == bfd_link_hash_defined |
1140 | || h->root.type == bfd_link_hash_defweak)) | |
15bda425 JL |
1141 | { |
1142 | /* If we are creating a shared library, then we will have to | |
1143 | create a runtime relocation for the symbol to properly | |
1144 | initialize the .opd entry. Make sure the symbol gets | |
1145 | added to the dynamic symbol table. */ | |
1146 | if (x->info->shared | |
1147 | && (h == NULL || (h->dynindx == -1))) | |
1148 | { | |
1149 | bfd *owner; | |
1150 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1151 | ||
c152c796 | 1152 | if (!bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 1153 | (x->info, owner, dyn_h->sym_indx)) |
b34976b6 | 1154 | return FALSE; |
15bda425 JL |
1155 | } |
1156 | ||
1157 | /* This may not be necessary or desirable anymore now that | |
1158 | we have some support for dealing with section symbols | |
1159 | in dynamic relocs. But name munging does make the result | |
1160 | much easier to debug. ie, the EPLT reloc will reference | |
1161 | a symbol like .foobar, instead of .text + offset. */ | |
1162 | if (x->info->shared && h) | |
1163 | { | |
1164 | char *new_name; | |
1165 | struct elf_link_hash_entry *nh; | |
1166 | ||
1167 | new_name = alloca (strlen (h->root.root.string) + 2); | |
1168 | new_name[0] = '.'; | |
1169 | strcpy (new_name + 1, h->root.root.string); | |
1170 | ||
1171 | nh = elf_link_hash_lookup (elf_hash_table (x->info), | |
b34976b6 | 1172 | new_name, TRUE, TRUE, TRUE); |
15bda425 JL |
1173 | |
1174 | nh->root.type = h->root.type; | |
1175 | nh->root.u.def.value = h->root.u.def.value; | |
1176 | nh->root.u.def.section = h->root.u.def.section; | |
1177 | ||
c152c796 | 1178 | if (! bfd_elf_link_record_dynamic_symbol (x->info, nh)) |
b34976b6 | 1179 | return FALSE; |
15bda425 JL |
1180 | |
1181 | } | |
1182 | dyn_h->opd_offset = x->ofs; | |
1183 | x->ofs += OPD_ENTRY_SIZE; | |
1184 | } | |
1185 | ||
1186 | /* Otherwise we do not need an opd entry. */ | |
1187 | else | |
1188 | dyn_h->want_opd = 0; | |
1189 | } | |
b34976b6 | 1190 | return TRUE; |
15bda425 JL |
1191 | } |
1192 | ||
1193 | /* HP requires the EI_OSABI field to be filled in. The assignment to | |
1194 | EI_ABIVERSION may not be strictly necessary. */ | |
1195 | ||
1196 | static void | |
1197 | elf64_hppa_post_process_headers (abfd, link_info) | |
1198 | bfd * abfd; | |
1199 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
1200 | { | |
1201 | Elf_Internal_Ehdr * i_ehdrp; | |
1202 | ||
1203 | i_ehdrp = elf_elfheader (abfd); | |
1204 | ||
d952f17a AM |
1205 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) |
1206 | { | |
1207 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX; | |
1212 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
1213 | } | |
15bda425 JL |
1214 | } |
1215 | ||
1216 | /* Create function descriptor section (.opd). This section is called .opd | |
4cc11e76 | 1217 | because it contains "official procedure descriptors". The "official" |
15bda425 JL |
1218 | refers to the fact that these descriptors are used when taking the address |
1219 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1220 | ||
b34976b6 | 1221 | static bfd_boolean |
15bda425 JL |
1222 | get_opd (abfd, info, hppa_info) |
1223 | bfd *abfd; | |
edd21aca | 1224 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1225 | struct elf64_hppa_link_hash_table *hppa_info; |
1226 | { | |
1227 | asection *opd; | |
1228 | bfd *dynobj; | |
1229 | ||
1230 | opd = hppa_info->opd_sec; | |
1231 | if (!opd) | |
1232 | { | |
1233 | dynobj = hppa_info->root.dynobj; | |
1234 | if (!dynobj) | |
1235 | hppa_info->root.dynobj = dynobj = abfd; | |
1236 | ||
1237 | opd = bfd_make_section (dynobj, ".opd"); | |
1238 | if (!opd | |
1239 | || !bfd_set_section_flags (dynobj, opd, | |
1240 | (SEC_ALLOC | |
1241 | | SEC_LOAD | |
1242 | | SEC_HAS_CONTENTS | |
1243 | | SEC_IN_MEMORY | |
1244 | | SEC_LINKER_CREATED)) | |
1245 | || !bfd_set_section_alignment (abfd, opd, 3)) | |
1246 | { | |
1247 | BFD_ASSERT (0); | |
b34976b6 | 1248 | return FALSE; |
15bda425 JL |
1249 | } |
1250 | ||
1251 | hppa_info->opd_sec = opd; | |
1252 | } | |
1253 | ||
b34976b6 | 1254 | return TRUE; |
15bda425 JL |
1255 | } |
1256 | ||
1257 | /* Create the PLT section. */ | |
1258 | ||
b34976b6 | 1259 | static bfd_boolean |
15bda425 JL |
1260 | get_plt (abfd, info, hppa_info) |
1261 | bfd *abfd; | |
edd21aca | 1262 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1263 | struct elf64_hppa_link_hash_table *hppa_info; |
1264 | { | |
1265 | asection *plt; | |
1266 | bfd *dynobj; | |
1267 | ||
1268 | plt = hppa_info->plt_sec; | |
1269 | if (!plt) | |
1270 | { | |
1271 | dynobj = hppa_info->root.dynobj; | |
1272 | if (!dynobj) | |
1273 | hppa_info->root.dynobj = dynobj = abfd; | |
1274 | ||
1275 | plt = bfd_make_section (dynobj, ".plt"); | |
1276 | if (!plt | |
1277 | || !bfd_set_section_flags (dynobj, plt, | |
1278 | (SEC_ALLOC | |
1279 | | SEC_LOAD | |
1280 | | SEC_HAS_CONTENTS | |
1281 | | SEC_IN_MEMORY | |
1282 | | SEC_LINKER_CREATED)) | |
1283 | || !bfd_set_section_alignment (abfd, plt, 3)) | |
1284 | { | |
1285 | BFD_ASSERT (0); | |
b34976b6 | 1286 | return FALSE; |
15bda425 JL |
1287 | } |
1288 | ||
1289 | hppa_info->plt_sec = plt; | |
1290 | } | |
1291 | ||
b34976b6 | 1292 | return TRUE; |
15bda425 JL |
1293 | } |
1294 | ||
1295 | /* Create the DLT section. */ | |
1296 | ||
b34976b6 | 1297 | static bfd_boolean |
15bda425 JL |
1298 | get_dlt (abfd, info, hppa_info) |
1299 | bfd *abfd; | |
edd21aca | 1300 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1301 | struct elf64_hppa_link_hash_table *hppa_info; |
1302 | { | |
1303 | asection *dlt; | |
1304 | bfd *dynobj; | |
1305 | ||
1306 | dlt = hppa_info->dlt_sec; | |
1307 | if (!dlt) | |
1308 | { | |
1309 | dynobj = hppa_info->root.dynobj; | |
1310 | if (!dynobj) | |
1311 | hppa_info->root.dynobj = dynobj = abfd; | |
1312 | ||
1313 | dlt = bfd_make_section (dynobj, ".dlt"); | |
1314 | if (!dlt | |
1315 | || !bfd_set_section_flags (dynobj, dlt, | |
1316 | (SEC_ALLOC | |
1317 | | SEC_LOAD | |
1318 | | SEC_HAS_CONTENTS | |
1319 | | SEC_IN_MEMORY | |
1320 | | SEC_LINKER_CREATED)) | |
1321 | || !bfd_set_section_alignment (abfd, dlt, 3)) | |
1322 | { | |
1323 | BFD_ASSERT (0); | |
b34976b6 | 1324 | return FALSE; |
15bda425 JL |
1325 | } |
1326 | ||
1327 | hppa_info->dlt_sec = dlt; | |
1328 | } | |
1329 | ||
b34976b6 | 1330 | return TRUE; |
15bda425 JL |
1331 | } |
1332 | ||
1333 | /* Create the stubs section. */ | |
1334 | ||
b34976b6 | 1335 | static bfd_boolean |
15bda425 JL |
1336 | get_stub (abfd, info, hppa_info) |
1337 | bfd *abfd; | |
edd21aca | 1338 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1339 | struct elf64_hppa_link_hash_table *hppa_info; |
1340 | { | |
1341 | asection *stub; | |
1342 | bfd *dynobj; | |
1343 | ||
1344 | stub = hppa_info->stub_sec; | |
1345 | if (!stub) | |
1346 | { | |
1347 | dynobj = hppa_info->root.dynobj; | |
1348 | if (!dynobj) | |
1349 | hppa_info->root.dynobj = dynobj = abfd; | |
1350 | ||
1351 | stub = bfd_make_section (dynobj, ".stub"); | |
1352 | if (!stub | |
1353 | || !bfd_set_section_flags (dynobj, stub, | |
1354 | (SEC_ALLOC | |
1355 | | SEC_LOAD | |
1356 | | SEC_HAS_CONTENTS | |
1357 | | SEC_IN_MEMORY | |
1358 | | SEC_READONLY | |
1359 | | SEC_LINKER_CREATED)) | |
1360 | || !bfd_set_section_alignment (abfd, stub, 3)) | |
1361 | { | |
1362 | BFD_ASSERT (0); | |
b34976b6 | 1363 | return FALSE; |
15bda425 JL |
1364 | } |
1365 | ||
1366 | hppa_info->stub_sec = stub; | |
1367 | } | |
1368 | ||
b34976b6 | 1369 | return TRUE; |
15bda425 JL |
1370 | } |
1371 | ||
1372 | /* Create sections necessary for dynamic linking. This is only a rough | |
1373 | cut and will likely change as we learn more about the somewhat | |
1374 | unusual dynamic linking scheme HP uses. | |
1375 | ||
1376 | .stub: | |
1377 | Contains code to implement cross-space calls. The first time one | |
1378 | of the stubs is used it will call into the dynamic linker, later | |
1379 | calls will go straight to the target. | |
1380 | ||
1381 | The only stub we support right now looks like | |
1382 | ||
1383 | ldd OFFSET(%dp),%r1 | |
1384 | bve %r0(%r1) | |
1385 | ldd OFFSET+8(%dp),%dp | |
1386 | ||
1387 | Other stubs may be needed in the future. We may want the remove | |
1388 | the break/nop instruction. It is only used right now to keep the | |
1389 | offset of a .plt entry and a .stub entry in sync. | |
1390 | ||
1391 | .dlt: | |
1392 | This is what most people call the .got. HP used a different name. | |
1393 | Losers. | |
1394 | ||
1395 | .rela.dlt: | |
1396 | Relocations for the DLT. | |
1397 | ||
1398 | .plt: | |
1399 | Function pointers as address,gp pairs. | |
1400 | ||
1401 | .rela.plt: | |
1402 | Should contain dynamic IPLT (and EPLT?) relocations. | |
1403 | ||
1404 | .opd: | |
fe8bc63d | 1405 | FPTRS |
15bda425 JL |
1406 | |
1407 | .rela.opd: | |
1408 | EPLT relocations for symbols exported from shared libraries. */ | |
1409 | ||
b34976b6 | 1410 | static bfd_boolean |
15bda425 JL |
1411 | elf64_hppa_create_dynamic_sections (abfd, info) |
1412 | bfd *abfd; | |
1413 | struct bfd_link_info *info; | |
1414 | { | |
1415 | asection *s; | |
1416 | ||
1417 | if (! get_stub (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1418 | return FALSE; |
15bda425 JL |
1419 | |
1420 | if (! get_dlt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1421 | return FALSE; |
15bda425 JL |
1422 | |
1423 | if (! get_plt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1424 | return FALSE; |
15bda425 JL |
1425 | |
1426 | if (! get_opd (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1427 | return FALSE; |
15bda425 JL |
1428 | |
1429 | s = bfd_make_section(abfd, ".rela.dlt"); | |
1430 | if (s == NULL | |
1431 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1432 | | SEC_HAS_CONTENTS | |
1433 | | SEC_IN_MEMORY | |
1434 | | SEC_READONLY | |
1435 | | SEC_LINKER_CREATED)) | |
1436 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1437 | return FALSE; |
15bda425 JL |
1438 | elf64_hppa_hash_table (info)->dlt_rel_sec = s; |
1439 | ||
1440 | s = bfd_make_section(abfd, ".rela.plt"); | |
1441 | if (s == NULL | |
1442 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1443 | | SEC_HAS_CONTENTS | |
1444 | | SEC_IN_MEMORY | |
1445 | | SEC_READONLY | |
1446 | | SEC_LINKER_CREATED)) | |
1447 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1448 | return FALSE; |
15bda425 JL |
1449 | elf64_hppa_hash_table (info)->plt_rel_sec = s; |
1450 | ||
1451 | s = bfd_make_section(abfd, ".rela.data"); | |
1452 | if (s == NULL | |
1453 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1454 | | SEC_HAS_CONTENTS | |
1455 | | SEC_IN_MEMORY | |
1456 | | SEC_READONLY | |
1457 | | SEC_LINKER_CREATED)) | |
1458 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1459 | return FALSE; |
15bda425 JL |
1460 | elf64_hppa_hash_table (info)->other_rel_sec = s; |
1461 | ||
1462 | s = bfd_make_section(abfd, ".rela.opd"); | |
1463 | if (s == NULL | |
1464 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1465 | | SEC_HAS_CONTENTS | |
1466 | | SEC_IN_MEMORY | |
1467 | | SEC_READONLY | |
1468 | | SEC_LINKER_CREATED)) | |
1469 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1470 | return FALSE; |
15bda425 JL |
1471 | elf64_hppa_hash_table (info)->opd_rel_sec = s; |
1472 | ||
b34976b6 | 1473 | return TRUE; |
15bda425 JL |
1474 | } |
1475 | ||
1476 | /* Allocate dynamic relocations for those symbols that turned out | |
1477 | to be dynamic. */ | |
1478 | ||
b34976b6 | 1479 | static bfd_boolean |
15bda425 JL |
1480 | allocate_dynrel_entries (dyn_h, data) |
1481 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1482 | PTR data; | |
1483 | { | |
1484 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1485 | struct elf64_hppa_link_hash_table *hppa_info; | |
1486 | struct elf64_hppa_dyn_reloc_entry *rent; | |
b34976b6 | 1487 | bfd_boolean dynamic_symbol, shared; |
15bda425 JL |
1488 | |
1489 | hppa_info = elf64_hppa_hash_table (x->info); | |
1490 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info); | |
1491 | shared = x->info->shared; | |
1492 | ||
1493 | /* We may need to allocate relocations for a non-dynamic symbol | |
1494 | when creating a shared library. */ | |
1495 | if (!dynamic_symbol && !shared) | |
b34976b6 | 1496 | return TRUE; |
15bda425 JL |
1497 | |
1498 | /* Take care of the normal data relocations. */ | |
1499 | ||
1500 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
1501 | { | |
d663e1cd JL |
1502 | /* Allocate one iff we are building a shared library, the relocation |
1503 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
1504 | if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
1505 | continue; | |
1506 | ||
eea6121a | 1507 | hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1508 | |
1509 | /* Make sure this symbol gets into the dynamic symbol table if it is | |
1510 | not already recorded. ?!? This should not be in the loop since | |
1511 | the symbol need only be added once. */ | |
47b7c2db AM |
1512 | if (dyn_h->h == 0 |
1513 | || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI)) | |
c152c796 | 1514 | if (!bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 1515 | (x->info, rent->sec->owner, dyn_h->sym_indx)) |
b34976b6 | 1516 | return FALSE; |
15bda425 JL |
1517 | } |
1518 | ||
1519 | /* Take care of the GOT and PLT relocations. */ | |
1520 | ||
1521 | if ((dynamic_symbol || shared) && dyn_h->want_dlt) | |
eea6121a | 1522 | hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1523 | |
1524 | /* If we are building a shared library, then every symbol that has an | |
1525 | opd entry will need an EPLT relocation to relocate the symbol's address | |
1526 | and __gp value based on the runtime load address. */ | |
1527 | if (shared && dyn_h->want_opd) | |
eea6121a | 1528 | hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1529 | |
1530 | if (dyn_h->want_plt && dynamic_symbol) | |
1531 | { | |
1532 | bfd_size_type t = 0; | |
1533 | ||
1534 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
1535 | shared libraries get two REL relocations. Local symbols in | |
1536 | main applications get nothing. */ | |
1537 | if (dynamic_symbol) | |
1538 | t = sizeof (Elf64_External_Rela); | |
1539 | else if (shared) | |
1540 | t = 2 * sizeof (Elf64_External_Rela); | |
1541 | ||
eea6121a | 1542 | hppa_info->plt_rel_sec->size += t; |
15bda425 JL |
1543 | } |
1544 | ||
b34976b6 | 1545 | return TRUE; |
15bda425 JL |
1546 | } |
1547 | ||
1548 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1549 | regular object. */ | |
1550 | ||
b34976b6 | 1551 | static bfd_boolean |
15bda425 | 1552 | elf64_hppa_adjust_dynamic_symbol (info, h) |
edd21aca | 1553 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1554 | struct elf_link_hash_entry *h; |
1555 | { | |
1556 | /* ??? Undefined symbols with PLT entries should be re-defined | |
1557 | to be the PLT entry. */ | |
1558 | ||
1559 | /* If this is a weak symbol, and there is a real definition, the | |
1560 | processor independent code will have arranged for us to see the | |
1561 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1562 | if (h->u.weakdef != NULL) |
15bda425 | 1563 | { |
f6e332e6 AM |
1564 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1565 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1566 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1567 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1568 | return TRUE; |
15bda425 JL |
1569 | } |
1570 | ||
1571 | /* If this is a reference to a symbol defined by a dynamic object which | |
1572 | is not a function, we might allocate the symbol in our .dynbss section | |
1573 | and allocate a COPY dynamic relocation. | |
1574 | ||
1575 | But PA64 code is canonically PIC, so as a rule we can avoid this sort | |
1576 | of hackery. */ | |
1577 | ||
b34976b6 | 1578 | return TRUE; |
15bda425 JL |
1579 | } |
1580 | ||
47b7c2db AM |
1581 | /* This function is called via elf_link_hash_traverse to mark millicode |
1582 | symbols with a dynindx of -1 and to remove the string table reference | |
1583 | from the dynamic symbol table. If the symbol is not a millicode symbol, | |
1584 | elf64_hppa_mark_exported_functions is called. */ | |
1585 | ||
b34976b6 | 1586 | static bfd_boolean |
47b7c2db AM |
1587 | elf64_hppa_mark_milli_and_exported_functions (h, data) |
1588 | struct elf_link_hash_entry *h; | |
1589 | PTR data; | |
1590 | { | |
1591 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
1592 | struct elf_link_hash_entry *elf = h; | |
1593 | ||
1594 | if (elf->root.type == bfd_link_hash_warning) | |
1595 | elf = (struct elf_link_hash_entry *) elf->root.u.i.link; | |
1596 | ||
1597 | if (elf->type == STT_PARISC_MILLI) | |
1598 | { | |
1599 | if (elf->dynindx != -1) | |
1600 | { | |
1601 | elf->dynindx = -1; | |
1602 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1603 | elf->dynstr_index); | |
1604 | } | |
b34976b6 | 1605 | return TRUE; |
47b7c2db AM |
1606 | } |
1607 | ||
1608 | return elf64_hppa_mark_exported_functions (h, data); | |
1609 | } | |
1610 | ||
15bda425 JL |
1611 | /* Set the final sizes of the dynamic sections and allocate memory for |
1612 | the contents of our special sections. */ | |
1613 | ||
b34976b6 | 1614 | static bfd_boolean |
15bda425 JL |
1615 | elf64_hppa_size_dynamic_sections (output_bfd, info) |
1616 | bfd *output_bfd; | |
1617 | struct bfd_link_info *info; | |
1618 | { | |
1619 | bfd *dynobj; | |
1620 | asection *s; | |
b34976b6 AM |
1621 | bfd_boolean plt; |
1622 | bfd_boolean relocs; | |
1623 | bfd_boolean reltext; | |
15bda425 JL |
1624 | struct elf64_hppa_allocate_data data; |
1625 | struct elf64_hppa_link_hash_table *hppa_info; | |
1626 | ||
1627 | hppa_info = elf64_hppa_hash_table (info); | |
1628 | ||
1629 | dynobj = elf_hash_table (info)->dynobj; | |
1630 | BFD_ASSERT (dynobj != NULL); | |
1631 | ||
47b7c2db AM |
1632 | /* Mark each function this program exports so that we will allocate |
1633 | space in the .opd section for each function's FPTR. If we are | |
1634 | creating dynamic sections, change the dynamic index of millicode | |
1635 | symbols to -1 and remove them from the string table for .dynstr. | |
1636 | ||
1637 | We have to traverse the main linker hash table since we have to | |
1638 | find functions which may not have been mentioned in any relocs. */ | |
1639 | elf_link_hash_traverse (elf_hash_table (info), | |
1640 | (elf_hash_table (info)->dynamic_sections_created | |
1641 | ? elf64_hppa_mark_milli_and_exported_functions | |
1642 | : elf64_hppa_mark_exported_functions), | |
1643 | info); | |
1644 | ||
15bda425 JL |
1645 | if (elf_hash_table (info)->dynamic_sections_created) |
1646 | { | |
1647 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1648 | if (info->executable) |
15bda425 JL |
1649 | { |
1650 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1651 | BFD_ASSERT (s != NULL); | |
eea6121a | 1652 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
15bda425 JL |
1653 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1654 | } | |
1655 | } | |
1656 | else | |
1657 | { | |
1658 | /* We may have created entries in the .rela.got section. | |
1659 | However, if we are not creating the dynamic sections, we will | |
1660 | not actually use these entries. Reset the size of .rela.dlt, | |
1661 | which will cause it to get stripped from the output file | |
1662 | below. */ | |
1663 | s = bfd_get_section_by_name (dynobj, ".rela.dlt"); | |
1664 | if (s != NULL) | |
eea6121a | 1665 | s->size = 0; |
15bda425 JL |
1666 | } |
1667 | ||
1668 | /* Allocate the GOT entries. */ | |
1669 | ||
1670 | data.info = info; | |
1671 | if (elf64_hppa_hash_table (info)->dlt_sec) | |
1672 | { | |
1673 | data.ofs = 0x0; | |
1674 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1675 | allocate_global_data_dlt, &data); | |
eea6121a | 1676 | hppa_info->dlt_sec->size = data.ofs; |
15bda425 JL |
1677 | |
1678 | data.ofs = 0x0; | |
1679 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1680 | allocate_global_data_plt, &data); | |
eea6121a | 1681 | hppa_info->plt_sec->size = data.ofs; |
15bda425 JL |
1682 | |
1683 | data.ofs = 0x0; | |
1684 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1685 | allocate_global_data_stub, &data); | |
eea6121a | 1686 | hppa_info->stub_sec->size = data.ofs; |
15bda425 JL |
1687 | } |
1688 | ||
15bda425 JL |
1689 | /* Allocate space for entries in the .opd section. */ |
1690 | if (elf64_hppa_hash_table (info)->opd_sec) | |
1691 | { | |
1692 | data.ofs = 0; | |
1693 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1694 | allocate_global_data_opd, &data); | |
eea6121a | 1695 | hppa_info->opd_sec->size = data.ofs; |
15bda425 JL |
1696 | } |
1697 | ||
1698 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1699 | if (hppa_info->root.dynamic_sections_created) | |
1700 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1701 | allocate_dynrel_entries, &data); | |
1702 | ||
1703 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 AM |
1704 | plt = FALSE; |
1705 | relocs = FALSE; | |
1706 | reltext = FALSE; | |
15bda425 JL |
1707 | for (s = dynobj->sections; s != NULL; s = s->next) |
1708 | { | |
1709 | const char *name; | |
b34976b6 | 1710 | bfd_boolean strip; |
15bda425 JL |
1711 | |
1712 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1713 | continue; | |
1714 | ||
1715 | /* It's OK to base decisions on the section name, because none | |
1716 | of the dynobj section names depend upon the input files. */ | |
1717 | name = bfd_get_section_name (dynobj, s); | |
1718 | ||
1719 | strip = 0; | |
1720 | ||
1721 | if (strcmp (name, ".plt") == 0) | |
1722 | { | |
d663e1cd | 1723 | /* Strip this section if we don't need it; see the comment below. */ |
eea6121a | 1724 | if (s->size == 0) |
15bda425 | 1725 | { |
b34976b6 | 1726 | strip = TRUE; |
15bda425 JL |
1727 | } |
1728 | else | |
1729 | { | |
1730 | /* Remember whether there is a PLT. */ | |
b34976b6 | 1731 | plt = TRUE; |
15bda425 JL |
1732 | } |
1733 | } | |
1734 | else if (strcmp (name, ".dlt") == 0) | |
1735 | { | |
d663e1cd | 1736 | /* Strip this section if we don't need it; see the comment below. */ |
eea6121a | 1737 | if (s->size == 0) |
15bda425 | 1738 | { |
b34976b6 | 1739 | strip = TRUE; |
15bda425 JL |
1740 | } |
1741 | } | |
1742 | else if (strcmp (name, ".opd") == 0) | |
1743 | { | |
d663e1cd | 1744 | /* Strip this section if we don't need it; see the comment below. */ |
eea6121a | 1745 | if (s->size == 0) |
15bda425 | 1746 | { |
b34976b6 | 1747 | strip = TRUE; |
15bda425 JL |
1748 | } |
1749 | } | |
d663e1cd | 1750 | else if (strncmp (name, ".rela", 5) == 0) |
15bda425 | 1751 | { |
d663e1cd JL |
1752 | /* If we don't need this section, strip it from the output file. |
1753 | This is mostly to handle .rela.bss and .rela.plt. We must | |
1754 | create both sections in create_dynamic_sections, because they | |
1755 | must be created before the linker maps input sections to output | |
1756 | sections. The linker does that before adjust_dynamic_symbol | |
1757 | is called, and it is that function which decides whether | |
1758 | anything needs to go into these sections. */ | |
eea6121a | 1759 | if (s->size == 0) |
15bda425 JL |
1760 | { |
1761 | /* If we don't need this section, strip it from the | |
1762 | output file. This is mostly to handle .rela.bss and | |
1763 | .rela.plt. We must create both sections in | |
1764 | create_dynamic_sections, because they must be created | |
1765 | before the linker maps input sections to output | |
1766 | sections. The linker does that before | |
1767 | adjust_dynamic_symbol is called, and it is that | |
1768 | function which decides whether anything needs to go | |
1769 | into these sections. */ | |
b34976b6 | 1770 | strip = TRUE; |
15bda425 JL |
1771 | } |
1772 | else | |
1773 | { | |
1774 | asection *target; | |
1775 | ||
1776 | /* Remember whether there are any reloc sections other | |
1777 | than .rela.plt. */ | |
1778 | if (strcmp (name, ".rela.plt") != 0) | |
1779 | { | |
1780 | const char *outname; | |
1781 | ||
b34976b6 | 1782 | relocs = TRUE; |
15bda425 JL |
1783 | |
1784 | /* If this relocation section applies to a read only | |
1785 | section, then we probably need a DT_TEXTREL | |
1786 | entry. The entries in the .rela.plt section | |
1787 | really apply to the .got section, which we | |
1788 | created ourselves and so know is not readonly. */ | |
1789 | outname = bfd_get_section_name (output_bfd, | |
1790 | s->output_section); | |
1791 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
1792 | if (target != NULL | |
1793 | && (target->flags & SEC_READONLY) != 0 | |
1794 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1795 | reltext = TRUE; |
15bda425 JL |
1796 | } |
1797 | ||
1798 | /* We use the reloc_count field as a counter if we need | |
1799 | to copy relocs into the output file. */ | |
1800 | s->reloc_count = 0; | |
1801 | } | |
1802 | } | |
1803 | else if (strncmp (name, ".dlt", 4) != 0 | |
1804 | && strcmp (name, ".stub") != 0 | |
1805 | && strcmp (name, ".got") != 0) | |
1806 | { | |
1807 | /* It's not one of our sections, so don't allocate space. */ | |
1808 | continue; | |
1809 | } | |
1810 | ||
1811 | if (strip) | |
1812 | { | |
1813 | _bfd_strip_section_from_output (info, s); | |
1814 | continue; | |
1815 | } | |
1816 | ||
1817 | /* Allocate memory for the section contents if it has not | |
832d951b AM |
1818 | been allocated already. We use bfd_zalloc here in case |
1819 | unused entries are not reclaimed before the section's | |
1820 | contents are written out. This should not happen, but this | |
1821 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1822 | garbage. */ | |
15bda425 JL |
1823 | if (s->contents == NULL) |
1824 | { | |
eea6121a AM |
1825 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
1826 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 1827 | return FALSE; |
15bda425 JL |
1828 | } |
1829 | } | |
1830 | ||
1831 | if (elf_hash_table (info)->dynamic_sections_created) | |
1832 | { | |
1833 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1834 | the PLT, it is how we communicate the __gp value of a load | |
1835 | module to the dynamic linker. */ | |
dc810e39 | 1836 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1837 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
1838 | |
1839 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) | |
1840 | || !add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 1841 | return FALSE; |
15bda425 JL |
1842 | |
1843 | /* Add some entries to the .dynamic section. We fill in the | |
1844 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1845 | must add the entries now so that we get the correct size for | |
1846 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1847 | dynamic linker and used by the debugger. */ | |
1848 | if (! info->shared) | |
1849 | { | |
dc810e39 AM |
1850 | if (!add_dynamic_entry (DT_DEBUG, 0) |
1851 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) | |
1852 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) | |
b34976b6 | 1853 | return FALSE; |
15bda425 JL |
1854 | } |
1855 | ||
f2482cb2 NC |
1856 | /* Force DT_FLAGS to always be set. |
1857 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1858 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1859 | return FALSE; |
f2482cb2 | 1860 | |
15bda425 JL |
1861 | if (plt) |
1862 | { | |
dc810e39 AM |
1863 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
1864 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1865 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1866 | return FALSE; |
15bda425 JL |
1867 | } |
1868 | ||
1869 | if (relocs) | |
1870 | { | |
dc810e39 AM |
1871 | if (!add_dynamic_entry (DT_RELA, 0) |
1872 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1873 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1874 | return FALSE; |
15bda425 JL |
1875 | } |
1876 | ||
1877 | if (reltext) | |
1878 | { | |
dc810e39 | 1879 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1880 | return FALSE; |
d6cf2879 | 1881 | info->flags |= DF_TEXTREL; |
15bda425 JL |
1882 | } |
1883 | } | |
dc810e39 | 1884 | #undef add_dynamic_entry |
15bda425 | 1885 | |
b34976b6 | 1886 | return TRUE; |
15bda425 JL |
1887 | } |
1888 | ||
1889 | /* Called after we have output the symbol into the dynamic symbol | |
1890 | table, but before we output the symbol into the normal symbol | |
1891 | table. | |
1892 | ||
1893 | For some symbols we had to change their address when outputting | |
1894 | the dynamic symbol table. We undo that change here so that | |
1895 | the symbols have their expected value in the normal symbol | |
1896 | table. Ick. */ | |
1897 | ||
b34976b6 | 1898 | static bfd_boolean |
754021d0 | 1899 | elf64_hppa_link_output_symbol_hook (info, name, sym, input_sec, h) |
15bda425 JL |
1900 | struct bfd_link_info *info; |
1901 | const char *name; | |
1902 | Elf_Internal_Sym *sym; | |
edd21aca | 1903 | asection *input_sec ATTRIBUTE_UNUSED; |
754021d0 | 1904 | struct elf_link_hash_entry *h; |
15bda425 JL |
1905 | { |
1906 | struct elf64_hppa_link_hash_table *hppa_info; | |
1907 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1908 | ||
1909 | /* We may be called with the file symbol or section symbols. | |
1910 | They never need munging, so it is safe to ignore them. */ | |
1911 | if (!name) | |
b34976b6 | 1912 | return TRUE; |
15bda425 JL |
1913 | |
1914 | /* Get the PA dyn_symbol (if any) associated with NAME. */ | |
1915 | hppa_info = elf64_hppa_hash_table (info); | |
1916 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1917 | name, FALSE, FALSE); |
ac7bbf74 | 1918 | if (!dyn_h || dyn_h->h != h) |
754021d0 | 1919 | return TRUE; |
15bda425 | 1920 | |
832d951b AM |
1921 | /* Function symbols for which we created .opd entries *may* have been |
1922 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1923 | ||
1924 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1925 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1926 | mark_exported_functions and check to see if it was overwritten | |
1927 | here instead of just checking dyn_h->h->dynindx. */ | |
ac7bbf74 | 1928 | if (dyn_h->want_opd && dyn_h->st_shndx != -1) |
15bda425 JL |
1929 | { |
1930 | /* Restore the saved value and section index. */ | |
1931 | sym->st_value = dyn_h->st_value; | |
fe8bc63d | 1932 | sym->st_shndx = dyn_h->st_shndx; |
15bda425 JL |
1933 | } |
1934 | ||
b34976b6 | 1935 | return TRUE; |
15bda425 JL |
1936 | } |
1937 | ||
1938 | /* Finish up dynamic symbol handling. We set the contents of various | |
1939 | dynamic sections here. */ | |
1940 | ||
b34976b6 | 1941 | static bfd_boolean |
15bda425 JL |
1942 | elf64_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) |
1943 | bfd *output_bfd; | |
1944 | struct bfd_link_info *info; | |
1945 | struct elf_link_hash_entry *h; | |
1946 | Elf_Internal_Sym *sym; | |
1947 | { | |
1948 | asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel; | |
1949 | struct elf64_hppa_link_hash_table *hppa_info; | |
1950 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1951 | ||
1952 | hppa_info = elf64_hppa_hash_table (info); | |
1953 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1954 | h->root.root.string, FALSE, FALSE); |
15bda425 JL |
1955 | |
1956 | stub = hppa_info->stub_sec; | |
1957 | splt = hppa_info->plt_sec; | |
1958 | sdlt = hppa_info->dlt_sec; | |
1959 | sopd = hppa_info->opd_sec; | |
1960 | spltrel = hppa_info->plt_rel_sec; | |
1961 | sdltrel = hppa_info->dlt_rel_sec; | |
1962 | ||
15bda425 JL |
1963 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1964 | value when building the dynamic symbol table for a shared library. | |
1965 | At least for symbols that refer to functions. | |
1966 | ||
1967 | We will store a new value and section index into the symbol long | |
1968 | enough to output it into the dynamic symbol table, then we restore | |
1969 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
1970 | if (dyn_h && dyn_h->want_opd) | |
1971 | { | |
f12123c0 | 1972 | BFD_ASSERT (sopd != NULL); |
d663e1cd | 1973 | |
15bda425 JL |
1974 | /* Save away the original value and section index so that we |
1975 | can restore them later. */ | |
1976 | dyn_h->st_value = sym->st_value; | |
1977 | dyn_h->st_shndx = sym->st_shndx; | |
1978 | ||
1979 | /* For the dynamic symbol table entry, we want the value to be | |
1980 | address of this symbol's entry within the .opd section. */ | |
1981 | sym->st_value = (dyn_h->opd_offset | |
1982 | + sopd->output_offset | |
1983 | + sopd->output_section->vma); | |
1984 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
1985 | sopd->output_section); | |
1986 | } | |
1987 | ||
1988 | /* Initialize a .plt entry if requested. */ | |
1989 | if (dyn_h && dyn_h->want_plt | |
1990 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
1991 | { | |
1992 | bfd_vma value; | |
1993 | Elf_Internal_Rela rel; | |
947216bf | 1994 | bfd_byte *loc; |
15bda425 | 1995 | |
f12123c0 | 1996 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
d663e1cd | 1997 | |
15bda425 JL |
1998 | /* We do not actually care about the value in the PLT entry |
1999 | if we are creating a shared library and the symbol is | |
2000 | still undefined, we create a dynamic relocation to fill | |
2001 | in the correct value. */ | |
2002 | if (info->shared && h->root.type == bfd_link_hash_undefined) | |
2003 | value = 0; | |
2004 | else | |
2005 | value = (h->root.u.def.value + h->root.u.def.section->vma); | |
2006 | ||
fe8bc63d | 2007 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
2008 | |
2009 | The format of a plt entry is | |
fe8bc63d | 2010 | <funcaddr> <__gp>. |
15bda425 JL |
2011 | |
2012 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 2013 | install the PLT entry. |
15bda425 JL |
2014 | |
2015 | We are modifying the in-memory PLT contents here, so we do not add | |
2016 | in the output_offset of the PLT section. */ | |
2017 | ||
2018 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset); | |
2019 | value = _bfd_get_gp_value (splt->output_section->owner); | |
2020 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8); | |
2021 | ||
2022 | /* Create a dynamic IPLT relocation for this entry. | |
2023 | ||
2024 | We are creating a relocation in the output file's PLT section, | |
2025 | which is included within the DLT secton. So we do need to include | |
2026 | the PLT's output_offset in the computation of the relocation's | |
2027 | address. */ | |
2028 | rel.r_offset = (dyn_h->plt_offset + splt->output_offset | |
2029 | + splt->output_section->vma); | |
2030 | rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT); | |
2031 | rel.r_addend = 0; | |
2032 | ||
947216bf AM |
2033 | loc = spltrel->contents; |
2034 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2035 | bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc); | |
15bda425 JL |
2036 | } |
2037 | ||
2038 | /* Initialize an external call stub entry if requested. */ | |
2039 | if (dyn_h && dyn_h->want_stub | |
2040 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
2041 | { | |
2042 | bfd_vma value; | |
2043 | int insn; | |
b352eebf | 2044 | unsigned int max_offset; |
15bda425 | 2045 | |
f12123c0 | 2046 | BFD_ASSERT (stub != NULL); |
d663e1cd | 2047 | |
15bda425 JL |
2048 | /* Install the generic stub template. |
2049 | ||
2050 | We are modifying the contents of the stub section, so we do not | |
2051 | need to include the stub section's output_offset here. */ | |
2052 | memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub)); | |
2053 | ||
2054 | /* Fix up the first ldd instruction. | |
2055 | ||
2056 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2057 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2058 | |
2059 | Note the plt_offset value is the value of the PLT entry relative to | |
2060 | the start of the PLT section. These instructions will reference | |
2061 | data relative to the value of __gp, which may not necessarily have | |
2062 | the same address as the start of the PLT section. | |
2063 | ||
2064 | gp_offset contains the offset of __gp within the PLT section. */ | |
2065 | value = dyn_h->plt_offset - hppa_info->gp_offset; | |
fe8bc63d | 2066 | |
15bda425 | 2067 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset); |
b352eebf AM |
2068 | if (output_bfd->arch_info->mach >= 25) |
2069 | { | |
2070 | /* Wide mode allows 16 bit offsets. */ | |
2071 | max_offset = 32768; | |
2072 | insn &= ~ 0xfff1; | |
dc810e39 | 2073 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2074 | } |
2075 | else | |
2076 | { | |
2077 | max_offset = 8192; | |
2078 | insn &= ~ 0x3ff1; | |
dc810e39 | 2079 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2080 | } |
2081 | ||
2082 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2083 | { | |
2084 | (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"), | |
2085 | dyn_h->root.string, | |
2086 | (long) value); | |
b34976b6 | 2087 | return FALSE; |
b352eebf AM |
2088 | } |
2089 | ||
dc810e39 | 2090 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2091 | stub->contents + dyn_h->stub_offset); |
2092 | ||
2093 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2094 | value += 8; |
15bda425 | 2095 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8); |
b352eebf AM |
2096 | if (output_bfd->arch_info->mach >= 25) |
2097 | { | |
2098 | insn &= ~ 0xfff1; | |
dc810e39 | 2099 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2100 | } |
2101 | else | |
2102 | { | |
2103 | insn &= ~ 0x3ff1; | |
dc810e39 | 2104 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2105 | } |
dc810e39 | 2106 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2107 | stub->contents + dyn_h->stub_offset + 8); |
2108 | } | |
2109 | ||
b34976b6 | 2110 | return TRUE; |
15bda425 JL |
2111 | } |
2112 | ||
2113 | /* The .opd section contains FPTRs for each function this file | |
2114 | exports. Initialize the FPTR entries. */ | |
2115 | ||
b34976b6 | 2116 | static bfd_boolean |
15bda425 JL |
2117 | elf64_hppa_finalize_opd (dyn_h, data) |
2118 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2119 | PTR data; | |
2120 | { | |
2121 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2122 | struct elf64_hppa_link_hash_table *hppa_info; | |
3db4b612 | 2123 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2124 | asection *sopd; |
2125 | asection *sopdrel; | |
2126 | ||
2127 | hppa_info = elf64_hppa_hash_table (info); | |
2128 | sopd = hppa_info->opd_sec; | |
2129 | sopdrel = hppa_info->opd_rel_sec; | |
2130 | ||
3db4b612 | 2131 | if (h && dyn_h->want_opd) |
15bda425 JL |
2132 | { |
2133 | bfd_vma value; | |
2134 | ||
fe8bc63d | 2135 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2136 | |
2137 | We are modifying the contents of the OPD section in memory, so we | |
2138 | do not need to include its output offset in this computation. */ | |
2139 | memset (sopd->contents + dyn_h->opd_offset, 0, 16); | |
2140 | ||
2141 | value = (h->root.u.def.value | |
2142 | + h->root.u.def.section->output_section->vma | |
2143 | + h->root.u.def.section->output_offset); | |
2144 | ||
2145 | /* The next word is the address of the function. */ | |
2146 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16); | |
2147 | ||
2148 | /* The last word is our local __gp value. */ | |
2149 | value = _bfd_get_gp_value (sopd->output_section->owner); | |
2150 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24); | |
2151 | } | |
2152 | ||
2153 | /* If we are generating a shared library, we must generate EPLT relocations | |
2154 | for each entry in the .opd, even for static functions (they may have | |
2155 | had their address taken). */ | |
2156 | if (info->shared && dyn_h && dyn_h->want_opd) | |
2157 | { | |
947216bf AM |
2158 | Elf_Internal_Rela rel; |
2159 | bfd_byte *loc; | |
15bda425 JL |
2160 | int dynindx; |
2161 | ||
2162 | /* We may need to do a relocation against a local symbol, in | |
2163 | which case we have to look up it's dynamic symbol index off | |
2164 | the local symbol hash table. */ | |
2165 | if (h && h->dynindx != -1) | |
2166 | dynindx = h->dynindx; | |
2167 | else | |
2168 | dynindx | |
2169 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2170 | dyn_h->sym_indx); | |
2171 | ||
2172 | /* The offset of this relocation is the absolute address of the | |
2173 | .opd entry for this symbol. */ | |
2174 | rel.r_offset = (dyn_h->opd_offset + sopd->output_offset | |
2175 | + sopd->output_section->vma); | |
2176 | ||
2177 | /* If H is non-null, then we have an external symbol. | |
2178 | ||
2179 | It is imperative that we use a different dynamic symbol for the | |
2180 | EPLT relocation if the symbol has global scope. | |
2181 | ||
2182 | In the dynamic symbol table, the function symbol will have a value | |
2183 | which is address of the function's .opd entry. | |
2184 | ||
2185 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2186 | (if we did, the data in the .opd would reference itself rather | |
2187 | than the actual address of the function). Instead we have to use | |
2188 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2189 | function symbol. |
15bda425 JL |
2190 | |
2191 | We prefix the original symbol with a "." and use the new symbol in | |
2192 | the EPLT relocation. This new symbol has already been recorded in | |
2193 | the symbol table, we just have to look it up and use it. | |
2194 | ||
2195 | We do not have such problems with static functions because we do | |
2196 | not make their addresses in the dynamic symbol table point to | |
2197 | the .opd entry. Ultimately this should be safe since a static | |
2198 | function can not be directly referenced outside of its shared | |
2199 | library. | |
2200 | ||
2201 | We do have to play similar games for FPTR relocations in shared | |
2202 | libraries, including those for static symbols. See the FPTR | |
2203 | handling in elf64_hppa_finalize_dynreloc. */ | |
2204 | if (h) | |
2205 | { | |
2206 | char *new_name; | |
2207 | struct elf_link_hash_entry *nh; | |
2208 | ||
2209 | new_name = alloca (strlen (h->root.root.string) + 2); | |
2210 | new_name[0] = '.'; | |
2211 | strcpy (new_name + 1, h->root.root.string); | |
2212 | ||
2213 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
b34976b6 | 2214 | new_name, FALSE, FALSE, FALSE); |
15bda425 JL |
2215 | |
2216 | /* All we really want from the new symbol is its dynamic | |
2217 | symbol index. */ | |
2218 | dynindx = nh->dynindx; | |
2219 | } | |
2220 | ||
2221 | rel.r_addend = 0; | |
2222 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2223 | ||
947216bf AM |
2224 | loc = sopdrel->contents; |
2225 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2226 | bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc); | |
15bda425 | 2227 | } |
b34976b6 | 2228 | return TRUE; |
15bda425 JL |
2229 | } |
2230 | ||
2231 | /* The .dlt section contains addresses for items referenced through the | |
2232 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2233 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2234 | ||
b34976b6 | 2235 | static bfd_boolean |
15bda425 JL |
2236 | elf64_hppa_finalize_dlt (dyn_h, data) |
2237 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2238 | PTR data; | |
2239 | { | |
2240 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2241 | struct elf64_hppa_link_hash_table *hppa_info; | |
2242 | asection *sdlt, *sdltrel; | |
3db4b612 | 2243 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2244 | |
2245 | hppa_info = elf64_hppa_hash_table (info); | |
2246 | ||
2247 | sdlt = hppa_info->dlt_sec; | |
2248 | sdltrel = hppa_info->dlt_rel_sec; | |
2249 | ||
2250 | /* H/DYN_H may refer to a local variable and we know it's | |
2251 | address, so there is no need to create a relocation. Just install | |
2252 | the proper value into the DLT, note this shortcut can not be | |
2253 | skipped when building a shared library. */ | |
3db4b612 | 2254 | if (! info->shared && h && dyn_h->want_dlt) |
15bda425 JL |
2255 | { |
2256 | bfd_vma value; | |
2257 | ||
2258 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2259 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2260 | |
2261 | We include the OPD's output offset in this computation as | |
2262 | we are referring to an absolute address in the resulting | |
2263 | object file. */ | |
2264 | if (dyn_h->want_opd) | |
2265 | { | |
2266 | value = (dyn_h->opd_offset | |
2267 | + hppa_info->opd_sec->output_offset | |
2268 | + hppa_info->opd_sec->output_section->vma); | |
2269 | } | |
37f4508b AM |
2270 | else if ((h->root.type == bfd_link_hash_defined |
2271 | || h->root.type == bfd_link_hash_defweak) | |
2272 | && h->root.u.def.section) | |
15bda425 | 2273 | { |
3db4b612 | 2274 | value = h->root.u.def.value + h->root.u.def.section->output_offset; |
15bda425 JL |
2275 | if (h->root.u.def.section->output_section) |
2276 | value += h->root.u.def.section->output_section->vma; | |
2277 | else | |
2278 | value += h->root.u.def.section->vma; | |
2279 | } | |
3db4b612 JL |
2280 | else |
2281 | /* We have an undefined function reference. */ | |
2282 | value = 0; | |
15bda425 JL |
2283 | |
2284 | /* We do not need to include the output offset of the DLT section | |
2285 | here because we are modifying the in-memory contents. */ | |
2286 | bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset); | |
2287 | } | |
2288 | ||
4cc11e76 | 2289 | /* Create a relocation for the DLT entry associated with this symbol. |
15bda425 JL |
2290 | When building a shared library the symbol does not have to be dynamic. */ |
2291 | if (dyn_h->want_dlt | |
2292 | && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared)) | |
2293 | { | |
947216bf AM |
2294 | Elf_Internal_Rela rel; |
2295 | bfd_byte *loc; | |
15bda425 JL |
2296 | int dynindx; |
2297 | ||
2298 | /* We may need to do a relocation against a local symbol, in | |
2299 | which case we have to look up it's dynamic symbol index off | |
2300 | the local symbol hash table. */ | |
2301 | if (h && h->dynindx != -1) | |
2302 | dynindx = h->dynindx; | |
2303 | else | |
2304 | dynindx | |
2305 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2306 | dyn_h->sym_indx); | |
2307 | ||
15bda425 JL |
2308 | /* Create a dynamic relocation for this entry. Do include the output |
2309 | offset of the DLT entry since we need an absolute address in the | |
2310 | resulting object file. */ | |
2311 | rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset | |
2312 | + sdlt->output_section->vma); | |
2313 | if (h && h->type == STT_FUNC) | |
2314 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); | |
2315 | else | |
2316 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2317 | rel.r_addend = 0; | |
2318 | ||
947216bf AM |
2319 | loc = sdltrel->contents; |
2320 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2321 | bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc); | |
15bda425 | 2322 | } |
b34976b6 | 2323 | return TRUE; |
15bda425 JL |
2324 | } |
2325 | ||
2326 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2327 | for dynamic functions used to initialize static data. */ | |
2328 | ||
b34976b6 | 2329 | static bfd_boolean |
15bda425 JL |
2330 | elf64_hppa_finalize_dynreloc (dyn_h, data) |
2331 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2332 | PTR data; | |
2333 | { | |
2334 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2335 | struct elf64_hppa_link_hash_table *hppa_info; | |
2336 | struct elf_link_hash_entry *h; | |
2337 | int dynamic_symbol; | |
2338 | ||
2339 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info); | |
2340 | ||
2341 | if (!dynamic_symbol && !info->shared) | |
b34976b6 | 2342 | return TRUE; |
15bda425 JL |
2343 | |
2344 | if (dyn_h->reloc_entries) | |
2345 | { | |
2346 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2347 | int dynindx; | |
2348 | ||
2349 | hppa_info = elf64_hppa_hash_table (info); | |
2350 | h = dyn_h->h; | |
2351 | ||
2352 | /* We may need to do a relocation against a local symbol, in | |
2353 | which case we have to look up it's dynamic symbol index off | |
2354 | the local symbol hash table. */ | |
2355 | if (h && h->dynindx != -1) | |
2356 | dynindx = h->dynindx; | |
2357 | else | |
2358 | dynindx | |
2359 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2360 | dyn_h->sym_indx); | |
2361 | ||
2362 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
2363 | { | |
947216bf AM |
2364 | Elf_Internal_Rela rel; |
2365 | bfd_byte *loc; | |
15bda425 | 2366 | |
d663e1cd JL |
2367 | /* Allocate one iff we are building a shared library, the relocation |
2368 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
2369 | if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
2370 | continue; | |
15bda425 | 2371 | |
fe8bc63d | 2372 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2373 | |
2374 | We need the output offset for the reloc's section because | |
2375 | we are creating an absolute address in the resulting object | |
2376 | file. */ | |
2377 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2378 | + rent->sec->output_section->vma); | |
2379 | ||
2380 | /* An FPTR64 relocation implies that we took the address of | |
2381 | a function and that the function has an entry in the .opd | |
2382 | section. We want the FPTR64 relocation to reference the | |
2383 | entry in .opd. | |
2384 | ||
2385 | We could munge the symbol value in the dynamic symbol table | |
2386 | (in fact we already do for functions with global scope) to point | |
2387 | to the .opd entry. Then we could use that dynamic symbol in | |
2388 | this relocation. | |
2389 | ||
2390 | Or we could do something sensible, not munge the symbol's | |
2391 | address and instead just use a different symbol to reference | |
2392 | the .opd entry. At least that seems sensible until you | |
2393 | realize there's no local dynamic symbols we can use for that | |
2394 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2395 | |
15bda425 JL |
2396 | We use a section symbol recorded by check_relocs as the |
2397 | base symbol for the relocation. The addend is the difference | |
2398 | between the section symbol and the address of the .opd entry. */ | |
3db4b612 | 2399 | if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) |
15bda425 JL |
2400 | { |
2401 | bfd_vma value, value2; | |
15bda425 JL |
2402 | |
2403 | /* First compute the address of the opd entry for this symbol. */ | |
2404 | value = (dyn_h->opd_offset | |
2405 | + hppa_info->opd_sec->output_section->vma | |
2406 | + hppa_info->opd_sec->output_offset); | |
2407 | ||
2408 | /* Compute the value of the start of the section with | |
2409 | the relocation. */ | |
2410 | value2 = (rent->sec->output_section->vma | |
2411 | + rent->sec->output_offset); | |
2412 | ||
2413 | /* Compute the difference between the start of the section | |
2414 | with the relocation and the opd entry. */ | |
2415 | value -= value2; | |
fe8bc63d | 2416 | |
15bda425 JL |
2417 | /* The result becomes the addend of the relocation. */ |
2418 | rel.r_addend = value; | |
2419 | ||
2420 | /* The section symbol becomes the symbol for the dynamic | |
2421 | relocation. */ | |
2422 | dynindx | |
2423 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2424 | rent->sec->owner, | |
2425 | rent->sec_symndx); | |
2426 | } | |
2427 | else | |
2428 | rel.r_addend = rent->addend; | |
2429 | ||
2430 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2431 | ||
947216bf AM |
2432 | loc = hppa_info->other_rel_sec->contents; |
2433 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2434 | * sizeof (Elf64_External_Rela)); | |
15bda425 | 2435 | bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner, |
947216bf | 2436 | &rel, loc); |
15bda425 JL |
2437 | } |
2438 | } | |
2439 | ||
b34976b6 | 2440 | return TRUE; |
15bda425 JL |
2441 | } |
2442 | ||
5ac81c74 JL |
2443 | /* Used to decide how to sort relocs in an optimal manner for the |
2444 | dynamic linker, before writing them out. */ | |
2445 | ||
2446 | static enum elf_reloc_type_class | |
2447 | elf64_hppa_reloc_type_class (rela) | |
2448 | const Elf_Internal_Rela *rela; | |
2449 | { | |
2450 | if (ELF64_R_SYM (rela->r_info) == 0) | |
2451 | return reloc_class_relative; | |
2452 | ||
2453 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2454 | { | |
2455 | case R_PARISC_IPLT: | |
2456 | return reloc_class_plt; | |
2457 | case R_PARISC_COPY: | |
2458 | return reloc_class_copy; | |
2459 | default: | |
2460 | return reloc_class_normal; | |
2461 | } | |
2462 | } | |
2463 | ||
15bda425 JL |
2464 | /* Finish up the dynamic sections. */ |
2465 | ||
b34976b6 | 2466 | static bfd_boolean |
15bda425 JL |
2467 | elf64_hppa_finish_dynamic_sections (output_bfd, info) |
2468 | bfd *output_bfd; | |
2469 | struct bfd_link_info *info; | |
2470 | { | |
2471 | bfd *dynobj; | |
2472 | asection *sdyn; | |
2473 | struct elf64_hppa_link_hash_table *hppa_info; | |
2474 | ||
2475 | hppa_info = elf64_hppa_hash_table (info); | |
2476 | ||
2477 | /* Finalize the contents of the .opd section. */ | |
2478 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2479 | elf64_hppa_finalize_opd, | |
2480 | info); | |
2481 | ||
2482 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2483 | elf64_hppa_finalize_dynreloc, | |
2484 | info); | |
2485 | ||
2486 | /* Finalize the contents of the .dlt section. */ | |
2487 | dynobj = elf_hash_table (info)->dynobj; | |
2488 | /* Finalize the contents of the .dlt section. */ | |
2489 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2490 | elf64_hppa_finalize_dlt, | |
2491 | info); | |
2492 | ||
15bda425 JL |
2493 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2494 | ||
2495 | if (elf_hash_table (info)->dynamic_sections_created) | |
2496 | { | |
2497 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2498 | |
2499 | BFD_ASSERT (sdyn != NULL); | |
2500 | ||
2501 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 2502 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
15bda425 JL |
2503 | for (; dyncon < dynconend; dyncon++) |
2504 | { | |
2505 | Elf_Internal_Dyn dyn; | |
2506 | asection *s; | |
2507 | ||
2508 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2509 | ||
2510 | switch (dyn.d_tag) | |
2511 | { | |
2512 | default: | |
2513 | break; | |
2514 | ||
2515 | case DT_HP_LOAD_MAP: | |
2516 | /* Compute the absolute address of 16byte scratchpad area | |
2517 | for the dynamic linker. | |
2518 | ||
2519 | By convention the linker script will allocate the scratchpad | |
2520 | area at the start of the .data section. So all we have to | |
2521 | to is find the start of the .data section. */ | |
2522 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
2523 | dyn.d_un.d_ptr = s->vma; | |
2524 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2525 | break; | |
2526 | ||
2527 | case DT_PLTGOT: | |
2528 | /* HP's use PLTGOT to set the GOT register. */ | |
2529 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2530 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2531 | break; | |
2532 | ||
2533 | case DT_JMPREL: | |
2534 | s = hppa_info->plt_rel_sec; | |
2535 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2536 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2537 | break; | |
2538 | ||
2539 | case DT_PLTRELSZ: | |
2540 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2541 | dyn.d_un.d_val = s->size; |
15bda425 JL |
2542 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2543 | break; | |
2544 | ||
2545 | case DT_RELA: | |
2546 | s = hppa_info->other_rel_sec; | |
eea6121a | 2547 | if (! s || ! s->size) |
15bda425 | 2548 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2549 | if (! s || ! s->size) |
5ac81c74 | 2550 | s = hppa_info->opd_rel_sec; |
15bda425 JL |
2551 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2552 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2553 | break; | |
2554 | ||
2555 | case DT_RELASZ: | |
2556 | s = hppa_info->other_rel_sec; | |
eea6121a | 2557 | dyn.d_un.d_val = s->size; |
15bda425 | 2558 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2559 | dyn.d_un.d_val += s->size; |
15bda425 | 2560 | s = hppa_info->opd_rel_sec; |
eea6121a | 2561 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2562 | /* There is some question about whether or not the size of |
2563 | the PLT relocs should be included here. HP's tools do | |
2564 | it, so we'll emulate them. */ | |
2565 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2566 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2567 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2568 | break; | |
2569 | ||
2570 | } | |
2571 | } | |
2572 | } | |
2573 | ||
b34976b6 | 2574 | return TRUE; |
15bda425 JL |
2575 | } |
2576 | ||
15bda425 JL |
2577 | /* Return the number of additional phdrs we will need. |
2578 | ||
2579 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2580 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2581 | |
2582 | This routine indicates that the backend needs one additional program | |
2583 | header for that case. | |
2584 | ||
2585 | Note we do not have access to the link info structure here, so we have | |
2586 | to guess whether or not we are building a shared library based on the | |
2587 | existence of a .interp section. */ | |
2588 | ||
2589 | static int | |
2590 | elf64_hppa_additional_program_headers (abfd) | |
2591 | bfd *abfd; | |
2592 | { | |
2593 | asection *s; | |
2594 | ||
2595 | /* If we are creating a shared library, then we have to create a | |
2596 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2597 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2598 | if (! s) | |
2599 | return 1; | |
2600 | return 0; | |
2601 | } | |
2602 | ||
2603 | /* Allocate and initialize any program headers required by this | |
2604 | specific backend. | |
2605 | ||
2606 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2607 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2608 | |
2609 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2610 | for the HP linker. |
15bda425 JL |
2611 | |
2612 | Note we do not have access to the link info structure here, so we have | |
2613 | to guess whether or not we are building a shared library based on the | |
2614 | existence of a .interp section. */ | |
2615 | ||
b34976b6 | 2616 | static bfd_boolean |
c84fca4d | 2617 | elf64_hppa_modify_segment_map (abfd, info) |
15bda425 | 2618 | bfd *abfd; |
c84fca4d | 2619 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 | 2620 | { |
edd21aca | 2621 | struct elf_segment_map *m; |
15bda425 JL |
2622 | asection *s; |
2623 | ||
2624 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2625 | if (! s) | |
2626 | { | |
2627 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2628 | if (m->p_type == PT_PHDR) | |
2629 | break; | |
2630 | if (m == NULL) | |
2631 | { | |
dc810e39 AM |
2632 | m = ((struct elf_segment_map *) |
2633 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2634 | if (m == NULL) |
b34976b6 | 2635 | return FALSE; |
15bda425 JL |
2636 | |
2637 | m->p_type = PT_PHDR; | |
2638 | m->p_flags = PF_R | PF_X; | |
2639 | m->p_flags_valid = 1; | |
2640 | m->p_paddr_valid = 1; | |
2641 | m->includes_phdrs = 1; | |
2642 | ||
2643 | m->next = elf_tdata (abfd)->segment_map; | |
2644 | elf_tdata (abfd)->segment_map = m; | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2649 | if (m->p_type == PT_LOAD) | |
2650 | { | |
0ba2a60e | 2651 | unsigned int i; |
15bda425 JL |
2652 | |
2653 | for (i = 0; i < m->count; i++) | |
2654 | { | |
2655 | /* The code "hint" is not really a hint. It is a requirement | |
2656 | for certain versions of the HP dynamic linker. Worse yet, | |
2657 | it must be set even if the shared library does not have | |
2658 | any code in its "text" segment (thus the check for .hash | |
2659 | to catch this situation). */ | |
2660 | if (m->sections[i]->flags & SEC_CODE | |
2661 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2662 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2663 | } | |
2664 | } | |
2665 | ||
b34976b6 | 2666 | return TRUE; |
15bda425 JL |
2667 | } |
2668 | ||
3fab46d0 AM |
2669 | /* Called when writing out an object file to decide the type of a |
2670 | symbol. */ | |
2671 | static int | |
2672 | elf64_hppa_elf_get_symbol_type (elf_sym, type) | |
2673 | Elf_Internal_Sym *elf_sym; | |
2674 | int type; | |
2675 | { | |
2676 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2677 | return STT_PARISC_MILLI; | |
2678 | else | |
2679 | return type; | |
2680 | } | |
2681 | ||
2f89ff8d L |
2682 | static struct bfd_elf_special_section const elf64_hppa_special_sections[]= |
2683 | { | |
7dcb9820 AM |
2684 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2685 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2686 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2687 | }; |
2688 | ||
15bda425 JL |
2689 | /* The hash bucket size is the standard one, namely 4. */ |
2690 | ||
2691 | const struct elf_size_info hppa64_elf_size_info = | |
2692 | { | |
2693 | sizeof (Elf64_External_Ehdr), | |
2694 | sizeof (Elf64_External_Phdr), | |
2695 | sizeof (Elf64_External_Shdr), | |
2696 | sizeof (Elf64_External_Rel), | |
2697 | sizeof (Elf64_External_Rela), | |
2698 | sizeof (Elf64_External_Sym), | |
2699 | sizeof (Elf64_External_Dyn), | |
2700 | sizeof (Elf_External_Note), | |
2701 | 4, | |
2702 | 1, | |
45d6a902 | 2703 | 64, 3, |
15bda425 JL |
2704 | ELFCLASS64, EV_CURRENT, |
2705 | bfd_elf64_write_out_phdrs, | |
2706 | bfd_elf64_write_shdrs_and_ehdr, | |
2707 | bfd_elf64_write_relocs, | |
73ff0d56 | 2708 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
2709 | bfd_elf64_swap_symbol_out, |
2710 | bfd_elf64_slurp_reloc_table, | |
2711 | bfd_elf64_slurp_symbol_table, | |
2712 | bfd_elf64_swap_dyn_in, | |
2713 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
2714 | bfd_elf64_swap_reloc_in, |
2715 | bfd_elf64_swap_reloc_out, | |
2716 | bfd_elf64_swap_reloca_in, | |
2717 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
2718 | }; |
2719 | ||
2720 | #define TARGET_BIG_SYM bfd_elf64_hppa_vec | |
2721 | #define TARGET_BIG_NAME "elf64-hppa" | |
2722 | #define ELF_ARCH bfd_arch_hppa | |
2723 | #define ELF_MACHINE_CODE EM_PARISC | |
2724 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
2725 | 64M. But everything still uses 4k. */ | |
2726 | #define ELF_MAXPAGESIZE 0x1000 | |
2727 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
2728 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name | |
2729 | #define elf_info_to_howto elf_hppa_info_to_howto | |
2730 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
2731 | ||
2732 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
2733 | #define elf_backend_object_p elf64_hppa_object_p | |
2734 | #define elf_backend_final_write_processing \ | |
2735 | elf_hppa_final_write_processing | |
99c79b2e | 2736 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
2737 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
2738 | ||
f0fe0e16 | 2739 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
2740 | |
2741 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
2742 | ||
2743 | #define elf_backend_create_dynamic_sections \ | |
2744 | elf64_hppa_create_dynamic_sections | |
2745 | #define elf_backend_post_process_headers elf64_hppa_post_process_headers | |
2746 | ||
2747 | #define elf_backend_adjust_dynamic_symbol \ | |
2748 | elf64_hppa_adjust_dynamic_symbol | |
2749 | ||
2750 | #define elf_backend_size_dynamic_sections \ | |
2751 | elf64_hppa_size_dynamic_sections | |
2752 | ||
2753 | #define elf_backend_finish_dynamic_symbol \ | |
2754 | elf64_hppa_finish_dynamic_symbol | |
2755 | #define elf_backend_finish_dynamic_sections \ | |
2756 | elf64_hppa_finish_dynamic_sections | |
2757 | ||
2758 | /* Stuff for the BFD linker: */ | |
2759 | #define bfd_elf64_bfd_link_hash_table_create \ | |
2760 | elf64_hppa_hash_table_create | |
2761 | ||
2762 | #define elf_backend_check_relocs \ | |
2763 | elf64_hppa_check_relocs | |
2764 | ||
2765 | #define elf_backend_size_info \ | |
2766 | hppa64_elf_size_info | |
2767 | ||
2768 | #define elf_backend_additional_program_headers \ | |
2769 | elf64_hppa_additional_program_headers | |
2770 | ||
2771 | #define elf_backend_modify_segment_map \ | |
2772 | elf64_hppa_modify_segment_map | |
2773 | ||
2774 | #define elf_backend_link_output_symbol_hook \ | |
2775 | elf64_hppa_link_output_symbol_hook | |
2776 | ||
15bda425 JL |
2777 | #define elf_backend_want_got_plt 0 |
2778 | #define elf_backend_plt_readonly 0 | |
2779 | #define elf_backend_want_plt_sym 0 | |
2780 | #define elf_backend_got_header_size 0 | |
b34976b6 AM |
2781 | #define elf_backend_type_change_ok TRUE |
2782 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
2783 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
2784 | #define elf_backend_rela_normal 1 | |
2f89ff8d | 2785 | #define elf_backend_special_sections elf64_hppa_special_sections |
15bda425 JL |
2786 | |
2787 | #include "elf64-target.h" | |
d952f17a AM |
2788 | |
2789 | #undef TARGET_BIG_SYM | |
2790 | #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec | |
2791 | #undef TARGET_BIG_NAME | |
2792 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
2793 | ||
2f89ff8d L |
2794 | #undef elf_backend_special_sections |
2795 | ||
d952f17a AM |
2796 | #define INCLUDED_TARGET_FILE 1 |
2797 | #include "elf64-target.h" |