Commit | Line | Data |
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b352eebf | 1 | /* Support for HPPA 64-bit ELF |
ae9a127f | 2 | Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
15bda425 | 3 | |
ae9a127f | 4 | This file is part of BFD, the Binary File Descriptor library. |
15bda425 | 5 | |
ae9a127f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
15bda425 | 10 | |
ae9a127f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15bda425 | 15 | |
ae9a127f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
15bda425 | 19 | |
3ef20aaa | 20 | #include "alloca-conf.h" |
15bda425 JL |
21 | #include "bfd.h" |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/hppa.h" | |
26 | #include "libhppa.h" | |
27 | #include "elf64-hppa.h" | |
28 | #define ARCH_SIZE 64 | |
29 | ||
30 | #define PLT_ENTRY_SIZE 0x10 | |
31 | #define DLT_ENTRY_SIZE 0x8 | |
32 | #define OPD_ENTRY_SIZE 0x20 | |
fe8bc63d | 33 | |
15bda425 JL |
34 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
35 | ||
36 | /* The stub is supposed to load the target address and target's DP | |
37 | value out of the PLT, then do an external branch to the target | |
38 | address. | |
39 | ||
40 | LDD PLTOFF(%r27),%r1 | |
41 | BVE (%r1) | |
42 | LDD PLTOFF+8(%r27),%r27 | |
43 | ||
44 | Note that we must use the LDD with a 14 bit displacement, not the one | |
45 | with a 5 bit displacement. */ | |
46 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, | |
47 | 0x53, 0x7b, 0x00, 0x00 }; | |
48 | ||
49 | struct elf64_hppa_dyn_hash_entry | |
50 | { | |
51 | struct bfd_hash_entry root; | |
52 | ||
53 | /* Offsets for this symbol in various linker sections. */ | |
54 | bfd_vma dlt_offset; | |
55 | bfd_vma plt_offset; | |
56 | bfd_vma opd_offset; | |
57 | bfd_vma stub_offset; | |
58 | ||
edd21aca | 59 | /* The symbol table entry, if any, that this was derived from. */ |
15bda425 JL |
60 | struct elf_link_hash_entry *h; |
61 | ||
62 | /* The index of the (possibly local) symbol in the input bfd and its | |
63 | associated BFD. Needed so that we can have relocs against local | |
64 | symbols in shared libraries. */ | |
dc810e39 | 65 | long sym_indx; |
15bda425 JL |
66 | bfd *owner; |
67 | ||
68 | /* Dynamic symbols may need to have two different values. One for | |
69 | the dynamic symbol table, one for the normal symbol table. | |
70 | ||
71 | In such cases we store the symbol's real value and section | |
72 | index here so we can restore the real value before we write | |
73 | the normal symbol table. */ | |
74 | bfd_vma st_value; | |
75 | int st_shndx; | |
76 | ||
77 | /* Used to count non-got, non-plt relocations for delayed sizing | |
78 | of relocation sections. */ | |
79 | struct elf64_hppa_dyn_reloc_entry | |
80 | { | |
81 | /* Next relocation in the chain. */ | |
82 | struct elf64_hppa_dyn_reloc_entry *next; | |
83 | ||
84 | /* The type of the relocation. */ | |
85 | int type; | |
86 | ||
87 | /* The input section of the relocation. */ | |
88 | asection *sec; | |
89 | ||
90 | /* The index of the section symbol for the input section of | |
91 | the relocation. Only needed when building shared libraries. */ | |
92 | int sec_symndx; | |
93 | ||
94 | /* The offset within the input section of the relocation. */ | |
95 | bfd_vma offset; | |
96 | ||
97 | /* The addend for the relocation. */ | |
98 | bfd_vma addend; | |
99 | ||
100 | } *reloc_entries; | |
101 | ||
102 | /* Nonzero if this symbol needs an entry in one of the linker | |
103 | sections. */ | |
104 | unsigned want_dlt; | |
105 | unsigned want_plt; | |
106 | unsigned want_opd; | |
107 | unsigned want_stub; | |
108 | }; | |
109 | ||
110 | struct elf64_hppa_dyn_hash_table | |
111 | { | |
112 | struct bfd_hash_table root; | |
113 | }; | |
114 | ||
115 | struct elf64_hppa_link_hash_table | |
116 | { | |
117 | struct elf_link_hash_table root; | |
118 | ||
119 | /* Shortcuts to get to the various linker defined sections. */ | |
120 | asection *dlt_sec; | |
121 | asection *dlt_rel_sec; | |
122 | asection *plt_sec; | |
123 | asection *plt_rel_sec; | |
124 | asection *opd_sec; | |
125 | asection *opd_rel_sec; | |
126 | asection *other_rel_sec; | |
127 | ||
128 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
129 | to slide __gp into the PLT section so that we can continue to use | |
130 | single DP relative instructions to load values out of the PLT. */ | |
131 | bfd_vma gp_offset; | |
132 | ||
133 | /* Note this is not strictly correct. We should create a stub section for | |
134 | each input section with calls. The stub section should be placed before | |
135 | the section with the call. */ | |
136 | asection *stub_sec; | |
137 | ||
138 | bfd_vma text_segment_base; | |
139 | bfd_vma data_segment_base; | |
140 | ||
141 | struct elf64_hppa_dyn_hash_table dyn_hash_table; | |
142 | ||
143 | /* We build tables to map from an input section back to its | |
144 | symbol index. This is the BFD for which we currently have | |
145 | a map. */ | |
146 | bfd *section_syms_bfd; | |
147 | ||
148 | /* Array of symbol numbers for each input section attached to the | |
149 | current BFD. */ | |
150 | int *section_syms; | |
151 | }; | |
152 | ||
153 | #define elf64_hppa_hash_table(p) \ | |
154 | ((struct elf64_hppa_link_hash_table *) ((p)->hash)) | |
155 | ||
156 | typedef struct bfd_hash_entry *(*new_hash_entry_func) | |
157 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
158 | ||
b34976b6 | 159 | static bfd_boolean elf64_hppa_dyn_hash_table_init |
15bda425 JL |
160 | PARAMS ((struct elf64_hppa_dyn_hash_table *ht, bfd *abfd, |
161 | new_hash_entry_func new)); | |
162 | static struct bfd_hash_entry *elf64_hppa_new_dyn_hash_entry | |
163 | PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table, | |
164 | const char *string)); | |
165 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create | |
166 | PARAMS ((bfd *abfd)); | |
167 | static struct elf64_hppa_dyn_hash_entry *elf64_hppa_dyn_hash_lookup | |
168 | PARAMS ((struct elf64_hppa_dyn_hash_table *table, const char *string, | |
b34976b6 | 169 | bfd_boolean create, bfd_boolean copy)); |
15bda425 JL |
170 | static void elf64_hppa_dyn_hash_traverse |
171 | PARAMS ((struct elf64_hppa_dyn_hash_table *table, | |
b34976b6 | 172 | bfd_boolean (*func) (struct elf64_hppa_dyn_hash_entry *, PTR), |
15bda425 JL |
173 | PTR info)); |
174 | ||
175 | static const char *get_dyn_name | |
0ba2a60e AM |
176 | PARAMS ((asection *, struct elf_link_hash_entry *, |
177 | const Elf_Internal_Rela *, char **, size_t *)); | |
15bda425 | 178 | |
15bda425 JL |
179 | /* This must follow the definitions of the various derived linker |
180 | hash tables and shared functions. */ | |
181 | #include "elf-hppa.h" | |
182 | ||
b34976b6 | 183 | static bfd_boolean elf64_hppa_object_p |
15bda425 JL |
184 | PARAMS ((bfd *)); |
185 | ||
b34976b6 | 186 | static bfd_boolean elf64_hppa_section_from_shdr |
947216bf | 187 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
15bda425 JL |
188 | |
189 | static void elf64_hppa_post_process_headers | |
190 | PARAMS ((bfd *, struct bfd_link_info *)); | |
191 | ||
b34976b6 | 192 | static bfd_boolean elf64_hppa_create_dynamic_sections |
15bda425 JL |
193 | PARAMS ((bfd *, struct bfd_link_info *)); |
194 | ||
b34976b6 | 195 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
15bda425 JL |
196 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
197 | ||
b34976b6 | 198 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
47b7c2db AM |
199 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
200 | ||
b34976b6 | 201 | static bfd_boolean elf64_hppa_size_dynamic_sections |
15bda425 JL |
202 | PARAMS ((bfd *, struct bfd_link_info *)); |
203 | ||
b34976b6 AM |
204 | static bfd_boolean elf64_hppa_link_output_symbol_hook |
205 | PARAMS ((bfd *abfd, struct bfd_link_info *, const char *, | |
206 | Elf_Internal_Sym *, asection *input_sec)); | |
99c79b2e | 207 | |
b34976b6 | 208 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
15bda425 JL |
209 | PARAMS ((bfd *, struct bfd_link_info *, |
210 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
fe8bc63d | 211 | |
b34976b6 AM |
212 | static int elf64_hppa_additional_program_headers |
213 | PARAMS ((bfd *)); | |
99c79b2e | 214 | |
b34976b6 AM |
215 | static bfd_boolean elf64_hppa_modify_segment_map |
216 | PARAMS ((bfd *)); | |
99c79b2e | 217 | |
5ac81c74 JL |
218 | static enum elf_reloc_type_class elf64_hppa_reloc_type_class |
219 | PARAMS ((const Elf_Internal_Rela *)); | |
220 | ||
b34976b6 | 221 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
15bda425 JL |
222 | PARAMS ((bfd *, struct bfd_link_info *)); |
223 | ||
b34976b6 | 224 | static bfd_boolean elf64_hppa_check_relocs |
15bda425 JL |
225 | PARAMS ((bfd *, struct bfd_link_info *, |
226 | asection *, const Elf_Internal_Rela *)); | |
227 | ||
b34976b6 | 228 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
15bda425 JL |
229 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); |
230 | ||
b34976b6 | 231 | static bfd_boolean elf64_hppa_mark_exported_functions |
15bda425 JL |
232 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
233 | ||
b34976b6 | 234 | static bfd_boolean elf64_hppa_finalize_opd |
15bda425 JL |
235 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
236 | ||
b34976b6 | 237 | static bfd_boolean elf64_hppa_finalize_dlt |
15bda425 JL |
238 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
239 | ||
b34976b6 | 240 | static bfd_boolean allocate_global_data_dlt |
15bda425 JL |
241 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
242 | ||
b34976b6 | 243 | static bfd_boolean allocate_global_data_plt |
15bda425 JL |
244 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
245 | ||
b34976b6 | 246 | static bfd_boolean allocate_global_data_stub |
15bda425 JL |
247 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
248 | ||
b34976b6 | 249 | static bfd_boolean allocate_global_data_opd |
15bda425 JL |
250 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
251 | ||
b34976b6 | 252 | static bfd_boolean get_reloc_section |
15bda425 JL |
253 | PARAMS ((bfd *, struct elf64_hppa_link_hash_table *, asection *)); |
254 | ||
b34976b6 | 255 | static bfd_boolean count_dyn_reloc |
15bda425 JL |
256 | PARAMS ((bfd *, struct elf64_hppa_dyn_hash_entry *, |
257 | int, asection *, int, bfd_vma, bfd_vma)); | |
258 | ||
b34976b6 | 259 | static bfd_boolean allocate_dynrel_entries |
15bda425 JL |
260 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
261 | ||
b34976b6 | 262 | static bfd_boolean elf64_hppa_finalize_dynreloc |
15bda425 JL |
263 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
264 | ||
b34976b6 | 265 | static bfd_boolean get_opd |
15bda425 JL |
266 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
267 | ||
b34976b6 | 268 | static bfd_boolean get_plt |
15bda425 JL |
269 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
270 | ||
b34976b6 | 271 | static bfd_boolean get_dlt |
15bda425 JL |
272 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
273 | ||
b34976b6 | 274 | static bfd_boolean get_stub |
15bda425 JL |
275 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
276 | ||
3fab46d0 AM |
277 | static int elf64_hppa_elf_get_symbol_type |
278 | PARAMS ((Elf_Internal_Sym *, int)); | |
279 | ||
b34976b6 | 280 | static bfd_boolean |
15bda425 JL |
281 | elf64_hppa_dyn_hash_table_init (ht, abfd, new) |
282 | struct elf64_hppa_dyn_hash_table *ht; | |
edd21aca | 283 | bfd *abfd ATTRIBUTE_UNUSED; |
15bda425 JL |
284 | new_hash_entry_func new; |
285 | { | |
fe8bc63d | 286 | memset (ht, 0, sizeof (*ht)); |
15bda425 JL |
287 | return bfd_hash_table_init (&ht->root, new); |
288 | } | |
289 | ||
290 | static struct bfd_hash_entry* | |
291 | elf64_hppa_new_dyn_hash_entry (entry, table, string) | |
292 | struct bfd_hash_entry *entry; | |
293 | struct bfd_hash_table *table; | |
294 | const char *string; | |
295 | { | |
296 | struct elf64_hppa_dyn_hash_entry *ret; | |
297 | ret = (struct elf64_hppa_dyn_hash_entry *) entry; | |
298 | ||
299 | /* Allocate the structure if it has not already been allocated by a | |
300 | subclass. */ | |
301 | if (!ret) | |
302 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
303 | ||
304 | if (!ret) | |
305 | return 0; | |
306 | ||
307 | /* Initialize our local data. All zeros, and definitely easier | |
308 | than setting 8 bit fields. */ | |
fe8bc63d | 309 | memset (ret, 0, sizeof (*ret)); |
15bda425 JL |
310 | |
311 | /* Call the allocation method of the superclass. */ | |
312 | ret = ((struct elf64_hppa_dyn_hash_entry *) | |
313 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
314 | ||
315 | return &ret->root; | |
316 | } | |
317 | ||
318 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
319 | derived hash table to keep information specific to the PA ElF | |
320 | linker (without using static variables). */ | |
321 | ||
322 | static struct bfd_link_hash_table* | |
323 | elf64_hppa_hash_table_create (abfd) | |
324 | bfd *abfd; | |
325 | { | |
326 | struct elf64_hppa_link_hash_table *ret; | |
327 | ||
dc810e39 | 328 | ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret)); |
15bda425 JL |
329 | if (!ret) |
330 | return 0; | |
331 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
332 | _bfd_elf_link_hash_newfunc)) | |
333 | { | |
334 | bfd_release (abfd, ret); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd, | |
339 | elf64_hppa_new_dyn_hash_entry)) | |
340 | return 0; | |
341 | return &ret->root.root; | |
342 | } | |
343 | ||
344 | /* Look up an entry in a PA64 ELF linker hash table. */ | |
345 | ||
346 | static struct elf64_hppa_dyn_hash_entry * | |
347 | elf64_hppa_dyn_hash_lookup(table, string, create, copy) | |
348 | struct elf64_hppa_dyn_hash_table *table; | |
349 | const char *string; | |
b34976b6 | 350 | bfd_boolean create, copy; |
15bda425 JL |
351 | { |
352 | return ((struct elf64_hppa_dyn_hash_entry *) | |
353 | bfd_hash_lookup (&table->root, string, create, copy)); | |
354 | } | |
355 | ||
356 | /* Traverse a PA64 ELF linker hash table. */ | |
357 | ||
358 | static void | |
359 | elf64_hppa_dyn_hash_traverse (table, func, info) | |
360 | struct elf64_hppa_dyn_hash_table *table; | |
b34976b6 | 361 | bfd_boolean (*func) PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
15bda425 JL |
362 | PTR info; |
363 | { | |
364 | (bfd_hash_traverse | |
365 | (&table->root, | |
b34976b6 | 366 | (bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) func, |
15bda425 JL |
367 | info)); |
368 | } | |
369 | \f | |
370 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. | |
371 | ||
372 | Additionally we set the default architecture and machine. */ | |
b34976b6 | 373 | static bfd_boolean |
15bda425 JL |
374 | elf64_hppa_object_p (abfd) |
375 | bfd *abfd; | |
376 | { | |
24a5e751 L |
377 | Elf_Internal_Ehdr * i_ehdrp; |
378 | unsigned int flags; | |
d9634ba1 | 379 | |
24a5e751 L |
380 | i_ehdrp = elf_elfheader (abfd); |
381 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) | |
382 | { | |
383 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX) | |
b34976b6 | 384 | return FALSE; |
24a5e751 L |
385 | } |
386 | else | |
387 | { | |
388 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX) | |
b34976b6 | 389 | return FALSE; |
24a5e751 L |
390 | } |
391 | ||
392 | flags = i_ehdrp->e_flags; | |
d9634ba1 AM |
393 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
394 | { | |
395 | case EFA_PARISC_1_0: | |
396 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
397 | case EFA_PARISC_1_1: | |
398 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
399 | case EFA_PARISC_2_0: | |
400 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
401 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
402 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
403 | } | |
404 | /* Don't be fussy. */ | |
b34976b6 | 405 | return TRUE; |
15bda425 JL |
406 | } |
407 | ||
408 | /* Given section type (hdr->sh_type), return a boolean indicating | |
409 | whether or not the section is an elf64-hppa specific section. */ | |
b34976b6 | 410 | static bfd_boolean |
15bda425 JL |
411 | elf64_hppa_section_from_shdr (abfd, hdr, name) |
412 | bfd *abfd; | |
947216bf | 413 | Elf_Internal_Shdr *hdr; |
90937f86 | 414 | const char *name; |
15bda425 JL |
415 | { |
416 | asection *newsect; | |
417 | ||
418 | switch (hdr->sh_type) | |
419 | { | |
420 | case SHT_PARISC_EXT: | |
421 | if (strcmp (name, ".PARISC.archext") != 0) | |
b34976b6 | 422 | return FALSE; |
15bda425 JL |
423 | break; |
424 | case SHT_PARISC_UNWIND: | |
425 | if (strcmp (name, ".PARISC.unwind") != 0) | |
b34976b6 | 426 | return FALSE; |
15bda425 JL |
427 | break; |
428 | case SHT_PARISC_DOC: | |
429 | case SHT_PARISC_ANNOT: | |
430 | default: | |
b34976b6 | 431 | return FALSE; |
15bda425 JL |
432 | } |
433 | ||
434 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 435 | return FALSE; |
15bda425 JL |
436 | newsect = hdr->bfd_section; |
437 | ||
b34976b6 | 438 | return TRUE; |
15bda425 JL |
439 | } |
440 | ||
15bda425 | 441 | /* Construct a string for use in the elf64_hppa_dyn_hash_table. The |
fe8bc63d | 442 | name describes what was once potentially anonymous memory. We |
15bda425 JL |
443 | allocate memory as necessary, possibly reusing PBUF/PLEN. */ |
444 | ||
445 | static const char * | |
0ba2a60e AM |
446 | get_dyn_name (sec, h, rel, pbuf, plen) |
447 | asection *sec; | |
15bda425 JL |
448 | struct elf_link_hash_entry *h; |
449 | const Elf_Internal_Rela *rel; | |
450 | char **pbuf; | |
451 | size_t *plen; | |
452 | { | |
453 | size_t nlen, tlen; | |
454 | char *buf; | |
455 | size_t len; | |
456 | ||
457 | if (h && rel->r_addend == 0) | |
458 | return h->root.root.string; | |
459 | ||
460 | if (h) | |
461 | nlen = strlen (h->root.root.string); | |
462 | else | |
0ba2a60e AM |
463 | nlen = 8 + 1 + sizeof (rel->r_info) * 2 - 8; |
464 | tlen = nlen + 1 + sizeof (rel->r_addend) * 2 + 1; | |
15bda425 JL |
465 | |
466 | len = *plen; | |
467 | buf = *pbuf; | |
468 | if (len < tlen) | |
469 | { | |
470 | if (buf) | |
471 | free (buf); | |
472 | *pbuf = buf = malloc (tlen); | |
473 | *plen = len = tlen; | |
474 | if (!buf) | |
475 | return NULL; | |
476 | } | |
477 | ||
478 | if (h) | |
479 | { | |
480 | memcpy (buf, h->root.root.string, nlen); | |
0ba2a60e | 481 | buf[nlen++] = '+'; |
15bda425 JL |
482 | sprintf_vma (buf + nlen, rel->r_addend); |
483 | } | |
484 | else | |
485 | { | |
0ba2a60e AM |
486 | nlen = sprintf (buf, "%x:%lx", |
487 | sec->id & 0xffffffff, | |
488 | (long) ELF64_R_SYM (rel->r_info)); | |
15bda425 JL |
489 | if (rel->r_addend) |
490 | { | |
491 | buf[nlen++] = '+'; | |
492 | sprintf_vma (buf + nlen, rel->r_addend); | |
493 | } | |
494 | } | |
495 | ||
496 | return buf; | |
497 | } | |
498 | ||
499 | /* SEC is a section containing relocs for an input BFD when linking; return | |
500 | a suitable section for holding relocs in the output BFD for a link. */ | |
501 | ||
b34976b6 | 502 | static bfd_boolean |
15bda425 JL |
503 | get_reloc_section (abfd, hppa_info, sec) |
504 | bfd *abfd; | |
505 | struct elf64_hppa_link_hash_table *hppa_info; | |
506 | asection *sec; | |
507 | { | |
508 | const char *srel_name; | |
509 | asection *srel; | |
510 | bfd *dynobj; | |
511 | ||
512 | srel_name = (bfd_elf_string_from_elf_section | |
513 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
514 | elf_section_data(sec)->rel_hdr.sh_name)); | |
515 | if (srel_name == NULL) | |
b34976b6 | 516 | return FALSE; |
15bda425 JL |
517 | |
518 | BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0 | |
519 | && strcmp (bfd_get_section_name (abfd, sec), | |
520 | srel_name+5) == 0) | |
521 | || (strncmp (srel_name, ".rel", 4) == 0 | |
522 | && strcmp (bfd_get_section_name (abfd, sec), | |
523 | srel_name+4) == 0)); | |
524 | ||
525 | dynobj = hppa_info->root.dynobj; | |
526 | if (!dynobj) | |
527 | hppa_info->root.dynobj = dynobj = abfd; | |
528 | ||
529 | srel = bfd_get_section_by_name (dynobj, srel_name); | |
530 | if (srel == NULL) | |
531 | { | |
532 | srel = bfd_make_section (dynobj, srel_name); | |
533 | if (srel == NULL | |
534 | || !bfd_set_section_flags (dynobj, srel, | |
535 | (SEC_ALLOC | |
536 | | SEC_LOAD | |
537 | | SEC_HAS_CONTENTS | |
538 | | SEC_IN_MEMORY | |
539 | | SEC_LINKER_CREATED | |
540 | | SEC_READONLY)) | |
541 | || !bfd_set_section_alignment (dynobj, srel, 3)) | |
b34976b6 | 542 | return FALSE; |
15bda425 JL |
543 | } |
544 | ||
545 | hppa_info->other_rel_sec = srel; | |
b34976b6 | 546 | return TRUE; |
15bda425 JL |
547 | } |
548 | ||
fe8bc63d | 549 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
15bda425 JL |
550 | |
551 | We use this to keep a record of all the FPTR relocations against a | |
552 | particular symbol so that we can create FPTR relocations in the | |
553 | output file. */ | |
554 | ||
b34976b6 | 555 | static bfd_boolean |
15bda425 JL |
556 | count_dyn_reloc (abfd, dyn_h, type, sec, sec_symndx, offset, addend) |
557 | bfd *abfd; | |
558 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
559 | int type; | |
560 | asection *sec; | |
561 | int sec_symndx; | |
562 | bfd_vma offset; | |
563 | bfd_vma addend; | |
564 | { | |
565 | struct elf64_hppa_dyn_reloc_entry *rent; | |
566 | ||
567 | rent = (struct elf64_hppa_dyn_reloc_entry *) | |
dc810e39 | 568 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
15bda425 | 569 | if (!rent) |
b34976b6 | 570 | return FALSE; |
15bda425 JL |
571 | |
572 | rent->next = dyn_h->reloc_entries; | |
573 | rent->type = type; | |
574 | rent->sec = sec; | |
575 | rent->sec_symndx = sec_symndx; | |
576 | rent->offset = offset; | |
577 | rent->addend = addend; | |
578 | dyn_h->reloc_entries = rent; | |
579 | ||
b34976b6 | 580 | return TRUE; |
15bda425 JL |
581 | } |
582 | ||
583 | /* Scan the RELOCS and record the type of dynamic entries that each | |
584 | referenced symbol needs. */ | |
585 | ||
b34976b6 | 586 | static bfd_boolean |
15bda425 JL |
587 | elf64_hppa_check_relocs (abfd, info, sec, relocs) |
588 | bfd *abfd; | |
589 | struct bfd_link_info *info; | |
590 | asection *sec; | |
591 | const Elf_Internal_Rela *relocs; | |
592 | { | |
593 | struct elf64_hppa_link_hash_table *hppa_info; | |
594 | const Elf_Internal_Rela *relend; | |
595 | Elf_Internal_Shdr *symtab_hdr; | |
596 | const Elf_Internal_Rela *rel; | |
597 | asection *dlt, *plt, *stubs; | |
598 | char *buf; | |
599 | size_t buf_len; | |
600 | int sec_symndx; | |
601 | ||
1049f94e | 602 | if (info->relocatable) |
b34976b6 | 603 | return TRUE; |
15bda425 JL |
604 | |
605 | /* If this is the first dynamic object found in the link, create | |
606 | the special sections required for dynamic linking. */ | |
607 | if (! elf_hash_table (info)->dynamic_sections_created) | |
608 | { | |
45d6a902 | 609 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
b34976b6 | 610 | return FALSE; |
15bda425 JL |
611 | } |
612 | ||
613 | hppa_info = elf64_hppa_hash_table (info); | |
614 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
615 | ||
616 | /* If necessary, build a new table holding section symbols indices | |
6cdc0ccc | 617 | for this BFD. */ |
fe8bc63d | 618 | |
15bda425 JL |
619 | if (info->shared && hppa_info->section_syms_bfd != abfd) |
620 | { | |
832d951b | 621 | unsigned long i; |
9ad5cbcf | 622 | unsigned int highest_shndx; |
6cdc0ccc AM |
623 | Elf_Internal_Sym *local_syms = NULL; |
624 | Elf_Internal_Sym *isym, *isymend; | |
dc810e39 | 625 | bfd_size_type amt; |
15bda425 JL |
626 | |
627 | /* We're done with the old cache of section index to section symbol | |
628 | index information. Free it. | |
629 | ||
630 | ?!? Note we leak the last section_syms array. Presumably we | |
631 | could free it in one of the later routines in this file. */ | |
632 | if (hppa_info->section_syms) | |
633 | free (hppa_info->section_syms); | |
634 | ||
6cdc0ccc AM |
635 | /* Read this BFD's local symbols. */ |
636 | if (symtab_hdr->sh_info != 0) | |
47b7c2db | 637 | { |
6cdc0ccc AM |
638 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
639 | if (local_syms == NULL) | |
640 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
641 | symtab_hdr->sh_info, 0, | |
642 | NULL, NULL, NULL); | |
643 | if (local_syms == NULL) | |
b34976b6 | 644 | return FALSE; |
9ad5cbcf AM |
645 | } |
646 | ||
6cdc0ccc | 647 | /* Record the highest section index referenced by the local symbols. */ |
15bda425 | 648 | highest_shndx = 0; |
6cdc0ccc AM |
649 | isymend = local_syms + symtab_hdr->sh_info; |
650 | for (isym = local_syms; isym < isymend; isym++) | |
15bda425 | 651 | { |
15bda425 JL |
652 | if (isym->st_shndx > highest_shndx) |
653 | highest_shndx = isym->st_shndx; | |
654 | } | |
655 | ||
15bda425 JL |
656 | /* Allocate an array to hold the section index to section symbol index |
657 | mapping. Bump by one since we start counting at zero. */ | |
658 | highest_shndx++; | |
dc810e39 AM |
659 | amt = highest_shndx; |
660 | amt *= sizeof (int); | |
661 | hppa_info->section_syms = (int *) bfd_malloc (amt); | |
15bda425 JL |
662 | |
663 | /* Now walk the local symbols again. If we find a section symbol, | |
664 | record the index of the symbol into the section_syms array. */ | |
6cdc0ccc | 665 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
15bda425 JL |
666 | { |
667 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
668 | hppa_info->section_syms[isym->st_shndx] = i; | |
669 | } | |
670 | ||
6cdc0ccc AM |
671 | /* We are finished with the local symbols. */ |
672 | if (local_syms != NULL | |
673 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
674 | { | |
675 | if (! info->keep_memory) | |
676 | free (local_syms); | |
677 | else | |
678 | { | |
679 | /* Cache the symbols for elf_link_input_bfd. */ | |
680 | symtab_hdr->contents = (unsigned char *) local_syms; | |
681 | } | |
682 | } | |
15bda425 JL |
683 | |
684 | /* Record which BFD we built the section_syms mapping for. */ | |
685 | hppa_info->section_syms_bfd = abfd; | |
686 | } | |
687 | ||
688 | /* Record the symbol index for this input section. We may need it for | |
689 | relocations when building shared libraries. When not building shared | |
690 | libraries this value is never really used, but assign it to zero to | |
691 | prevent out of bounds memory accesses in other routines. */ | |
692 | if (info->shared) | |
693 | { | |
694 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
695 | ||
696 | /* If we did not find a section symbol for this section, then | |
697 | something went terribly wrong above. */ | |
698 | if (sec_symndx == -1) | |
b34976b6 | 699 | return FALSE; |
15bda425 JL |
700 | |
701 | sec_symndx = hppa_info->section_syms[sec_symndx]; | |
702 | } | |
703 | else | |
704 | sec_symndx = 0; | |
fe8bc63d | 705 | |
15bda425 JL |
706 | dlt = plt = stubs = NULL; |
707 | buf = NULL; | |
708 | buf_len = 0; | |
709 | ||
710 | relend = relocs + sec->reloc_count; | |
711 | for (rel = relocs; rel < relend; ++rel) | |
712 | { | |
713 | enum { | |
714 | NEED_DLT = 1, | |
715 | NEED_PLT = 2, | |
716 | NEED_STUB = 4, | |
717 | NEED_OPD = 8, | |
718 | NEED_DYNREL = 16, | |
719 | }; | |
720 | ||
721 | struct elf_link_hash_entry *h = NULL; | |
722 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
723 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
724 | int need_entry; | |
725 | const char *addr_name; | |
b34976b6 | 726 | bfd_boolean maybe_dynamic; |
15bda425 JL |
727 | int dynrel_type = R_PARISC_NONE; |
728 | static reloc_howto_type *howto; | |
729 | ||
730 | if (r_symndx >= symtab_hdr->sh_info) | |
731 | { | |
732 | /* We're dealing with a global symbol -- find its hash entry | |
733 | and mark it as being referenced. */ | |
734 | long indx = r_symndx - symtab_hdr->sh_info; | |
735 | h = elf_sym_hashes (abfd)[indx]; | |
736 | while (h->root.type == bfd_link_hash_indirect | |
737 | || h->root.type == bfd_link_hash_warning) | |
738 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
739 | ||
740 | h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; | |
741 | } | |
742 | ||
743 | /* We can only get preliminary data on whether a symbol is | |
744 | locally or externally defined, as not all of the input files | |
745 | have yet been processed. Do something with what we know, as | |
746 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 747 | maybe_dynamic = FALSE; |
671bae9c NC |
748 | if (h && ((info->shared |
749 | && (!info->symbolic || info->allow_shlib_undefined) ) | |
15bda425 JL |
750 | || ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) |
751 | || h->root.type == bfd_link_hash_defweak)) | |
b34976b6 | 752 | maybe_dynamic = TRUE; |
15bda425 JL |
753 | |
754 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); | |
755 | need_entry = 0; | |
756 | switch (howto->type) | |
757 | { | |
758 | /* These are simple indirect references to symbols through the | |
759 | DLT. We need to create a DLT entry for any symbols which | |
760 | appears in a DLTIND relocation. */ | |
761 | case R_PARISC_DLTIND21L: | |
762 | case R_PARISC_DLTIND14R: | |
763 | case R_PARISC_DLTIND14F: | |
764 | case R_PARISC_DLTIND14WR: | |
765 | case R_PARISC_DLTIND14DR: | |
766 | need_entry = NEED_DLT; | |
767 | break; | |
768 | ||
769 | /* ?!? These need a DLT entry. But I have no idea what to do with | |
770 | the "link time TP value. */ | |
771 | case R_PARISC_LTOFF_TP21L: | |
772 | case R_PARISC_LTOFF_TP14R: | |
773 | case R_PARISC_LTOFF_TP14F: | |
774 | case R_PARISC_LTOFF_TP64: | |
775 | case R_PARISC_LTOFF_TP14WR: | |
776 | case R_PARISC_LTOFF_TP14DR: | |
777 | case R_PARISC_LTOFF_TP16F: | |
778 | case R_PARISC_LTOFF_TP16WF: | |
779 | case R_PARISC_LTOFF_TP16DF: | |
780 | need_entry = NEED_DLT; | |
781 | break; | |
782 | ||
783 | /* These are function calls. Depending on their precise target we | |
784 | may need to make a stub for them. The stub uses the PLT, so we | |
785 | need to create PLT entries for these symbols too. */ | |
832d951b | 786 | case R_PARISC_PCREL12F: |
15bda425 JL |
787 | case R_PARISC_PCREL17F: |
788 | case R_PARISC_PCREL22F: | |
789 | case R_PARISC_PCREL32: | |
790 | case R_PARISC_PCREL64: | |
791 | case R_PARISC_PCREL21L: | |
792 | case R_PARISC_PCREL17R: | |
793 | case R_PARISC_PCREL17C: | |
794 | case R_PARISC_PCREL14R: | |
795 | case R_PARISC_PCREL14F: | |
796 | case R_PARISC_PCREL22C: | |
797 | case R_PARISC_PCREL14WR: | |
798 | case R_PARISC_PCREL14DR: | |
799 | case R_PARISC_PCREL16F: | |
800 | case R_PARISC_PCREL16WF: | |
801 | case R_PARISC_PCREL16DF: | |
802 | need_entry = (NEED_PLT | NEED_STUB); | |
803 | break; | |
804 | ||
805 | case R_PARISC_PLTOFF21L: | |
806 | case R_PARISC_PLTOFF14R: | |
807 | case R_PARISC_PLTOFF14F: | |
808 | case R_PARISC_PLTOFF14WR: | |
809 | case R_PARISC_PLTOFF14DR: | |
810 | case R_PARISC_PLTOFF16F: | |
811 | case R_PARISC_PLTOFF16WF: | |
812 | case R_PARISC_PLTOFF16DF: | |
813 | need_entry = (NEED_PLT); | |
814 | break; | |
815 | ||
816 | case R_PARISC_DIR64: | |
817 | if (info->shared || maybe_dynamic) | |
818 | need_entry = (NEED_DYNREL); | |
819 | dynrel_type = R_PARISC_DIR64; | |
820 | break; | |
821 | ||
822 | /* This is an indirect reference through the DLT to get the address | |
823 | of a OPD descriptor. Thus we need to make a DLT entry that points | |
824 | to an OPD entry. */ | |
825 | case R_PARISC_LTOFF_FPTR21L: | |
826 | case R_PARISC_LTOFF_FPTR14R: | |
827 | case R_PARISC_LTOFF_FPTR14WR: | |
828 | case R_PARISC_LTOFF_FPTR14DR: | |
829 | case R_PARISC_LTOFF_FPTR32: | |
830 | case R_PARISC_LTOFF_FPTR64: | |
831 | case R_PARISC_LTOFF_FPTR16F: | |
832 | case R_PARISC_LTOFF_FPTR16WF: | |
833 | case R_PARISC_LTOFF_FPTR16DF: | |
834 | if (info->shared || maybe_dynamic) | |
835 | need_entry = (NEED_DLT | NEED_OPD); | |
836 | else | |
837 | need_entry = (NEED_DLT | NEED_OPD); | |
838 | dynrel_type = R_PARISC_FPTR64; | |
839 | break; | |
840 | ||
841 | /* This is a simple OPD entry. */ | |
842 | case R_PARISC_FPTR64: | |
843 | if (info->shared || maybe_dynamic) | |
844 | need_entry = (NEED_OPD | NEED_DYNREL); | |
845 | else | |
846 | need_entry = (NEED_OPD); | |
847 | dynrel_type = R_PARISC_FPTR64; | |
848 | break; | |
849 | ||
850 | /* Add more cases as needed. */ | |
851 | } | |
852 | ||
853 | if (!need_entry) | |
854 | continue; | |
855 | ||
856 | /* Collect a canonical name for this address. */ | |
0ba2a60e | 857 | addr_name = get_dyn_name (sec, h, rel, &buf, &buf_len); |
15bda425 JL |
858 | |
859 | /* Collect the canonical entry data for this address. */ | |
860 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 861 | addr_name, TRUE, TRUE); |
15bda425 JL |
862 | BFD_ASSERT (dyn_h); |
863 | ||
864 | /* Stash away enough information to be able to find this symbol | |
865 | regardless of whether or not it is local or global. */ | |
866 | dyn_h->h = h; | |
867 | dyn_h->owner = abfd; | |
868 | dyn_h->sym_indx = r_symndx; | |
869 | ||
870 | /* ?!? We may need to do some error checking in here. */ | |
871 | /* Create what's needed. */ | |
872 | if (need_entry & NEED_DLT) | |
873 | { | |
874 | if (! hppa_info->dlt_sec | |
875 | && ! get_dlt (abfd, info, hppa_info)) | |
876 | goto err_out; | |
877 | dyn_h->want_dlt = 1; | |
878 | } | |
879 | ||
880 | if (need_entry & NEED_PLT) | |
881 | { | |
882 | if (! hppa_info->plt_sec | |
883 | && ! get_plt (abfd, info, hppa_info)) | |
884 | goto err_out; | |
885 | dyn_h->want_plt = 1; | |
886 | } | |
887 | ||
888 | if (need_entry & NEED_STUB) | |
889 | { | |
890 | if (! hppa_info->stub_sec | |
891 | && ! get_stub (abfd, info, hppa_info)) | |
892 | goto err_out; | |
893 | dyn_h->want_stub = 1; | |
894 | } | |
895 | ||
896 | if (need_entry & NEED_OPD) | |
897 | { | |
898 | if (! hppa_info->opd_sec | |
899 | && ! get_opd (abfd, info, hppa_info)) | |
900 | goto err_out; | |
901 | ||
902 | dyn_h->want_opd = 1; | |
903 | ||
904 | /* FPTRs are not allocated by the dynamic linker for PA64, though | |
905 | it is possible that will change in the future. */ | |
fe8bc63d | 906 | |
15bda425 JL |
907 | /* This could be a local function that had its address taken, in |
908 | which case H will be NULL. */ | |
909 | if (h) | |
910 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
911 | } | |
912 | ||
913 | /* Add a new dynamic relocation to the chain of dynamic | |
914 | relocations for this symbol. */ | |
915 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
916 | { | |
917 | if (! hppa_info->other_rel_sec | |
918 | && ! get_reloc_section (abfd, hppa_info, sec)) | |
919 | goto err_out; | |
920 | ||
921 | if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec, | |
922 | sec_symndx, rel->r_offset, rel->r_addend)) | |
923 | goto err_out; | |
924 | ||
925 | /* If we are building a shared library and we just recorded | |
926 | a dynamic R_PARISC_FPTR64 relocation, then make sure the | |
927 | section symbol for this section ends up in the dynamic | |
928 | symbol table. */ | |
929 | if (info->shared && dynrel_type == R_PARISC_FPTR64 | |
930 | && ! (_bfd_elf64_link_record_local_dynamic_symbol | |
931 | (info, abfd, sec_symndx))) | |
b34976b6 | 932 | return FALSE; |
15bda425 JL |
933 | } |
934 | } | |
935 | ||
936 | if (buf) | |
937 | free (buf); | |
b34976b6 | 938 | return TRUE; |
15bda425 JL |
939 | |
940 | err_out: | |
941 | if (buf) | |
942 | free (buf); | |
b34976b6 | 943 | return FALSE; |
15bda425 JL |
944 | } |
945 | ||
946 | struct elf64_hppa_allocate_data | |
947 | { | |
948 | struct bfd_link_info *info; | |
949 | bfd_size_type ofs; | |
950 | }; | |
951 | ||
952 | /* Should we do dynamic things to this symbol? */ | |
953 | ||
b34976b6 | 954 | static bfd_boolean |
15bda425 JL |
955 | elf64_hppa_dynamic_symbol_p (h, info) |
956 | struct elf_link_hash_entry *h; | |
957 | struct bfd_link_info *info; | |
958 | { | |
986a241f RH |
959 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
960 | and relocations that retrieve a function descriptor? Assume the | |
961 | worst for now. */ | |
962 | if (_bfd_elf_dynamic_symbol_p (h, info, 1)) | |
963 | { | |
964 | /* ??? Why is this here and not elsewhere is_local_label_name. */ | |
965 | if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$') | |
966 | return FALSE; | |
15bda425 | 967 | |
986a241f RH |
968 | return TRUE; |
969 | } | |
970 | else | |
b34976b6 | 971 | return FALSE; |
15bda425 JL |
972 | } |
973 | ||
974 | /* Mark all funtions exported by this file so that we can later allocate | |
975 | entries in .opd for them. */ | |
976 | ||
b34976b6 | 977 | static bfd_boolean |
15bda425 JL |
978 | elf64_hppa_mark_exported_functions (h, data) |
979 | struct elf_link_hash_entry *h; | |
980 | PTR data; | |
981 | { | |
982 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
983 | struct elf64_hppa_link_hash_table *hppa_info; | |
984 | ||
985 | hppa_info = elf64_hppa_hash_table (info); | |
986 | ||
e92d460e AM |
987 | if (h->root.type == bfd_link_hash_warning) |
988 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
989 | ||
15bda425 JL |
990 | if (h |
991 | && (h->root.type == bfd_link_hash_defined | |
992 | || h->root.type == bfd_link_hash_defweak) | |
993 | && h->root.u.def.section->output_section != NULL | |
994 | && h->type == STT_FUNC) | |
995 | { | |
996 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
997 | ||
998 | /* Add this symbol to the PA64 linker hash table. */ | |
999 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1000 | h->root.root.string, TRUE, TRUE); |
15bda425 JL |
1001 | BFD_ASSERT (dyn_h); |
1002 | dyn_h->h = h; | |
1003 | ||
1004 | if (! hppa_info->opd_sec | |
1005 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) | |
b34976b6 | 1006 | return FALSE; |
15bda425 JL |
1007 | |
1008 | dyn_h->want_opd = 1; | |
832d951b AM |
1009 | /* Put a flag here for output_symbol_hook. */ |
1010 | dyn_h->st_shndx = -1; | |
15bda425 JL |
1011 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
1012 | } | |
1013 | ||
b34976b6 | 1014 | return TRUE; |
15bda425 JL |
1015 | } |
1016 | ||
1017 | /* Allocate space for a DLT entry. */ | |
1018 | ||
b34976b6 | 1019 | static bfd_boolean |
15bda425 JL |
1020 | allocate_global_data_dlt (dyn_h, data) |
1021 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1022 | PTR data; | |
1023 | { | |
1024 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1025 | ||
1026 | if (dyn_h->want_dlt) | |
1027 | { | |
1028 | struct elf_link_hash_entry *h = dyn_h->h; | |
1029 | ||
1030 | if (x->info->shared) | |
1031 | { | |
1032 | /* Possibly add the symbol to the local dynamic symbol | |
1033 | table since we might need to create a dynamic relocation | |
1034 | against it. */ | |
1035 | if (! h | |
47b7c2db | 1036 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)) |
15bda425 JL |
1037 | { |
1038 | bfd *owner; | |
1039 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1040 | ||
dc810e39 AM |
1041 | if (! (_bfd_elf64_link_record_local_dynamic_symbol |
1042 | (x->info, owner, dyn_h->sym_indx))) | |
b34976b6 | 1043 | return FALSE; |
15bda425 JL |
1044 | } |
1045 | } | |
1046 | ||
1047 | dyn_h->dlt_offset = x->ofs; | |
1048 | x->ofs += DLT_ENTRY_SIZE; | |
1049 | } | |
b34976b6 | 1050 | return TRUE; |
15bda425 JL |
1051 | } |
1052 | ||
1053 | /* Allocate space for a DLT.PLT entry. */ | |
1054 | ||
b34976b6 | 1055 | static bfd_boolean |
15bda425 JL |
1056 | allocate_global_data_plt (dyn_h, data) |
1057 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1058 | PTR data; | |
1059 | { | |
1060 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1061 | ||
1062 | if (dyn_h->want_plt | |
1063 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1064 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1065 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1066 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1067 | { | |
1068 | dyn_h->plt_offset = x->ofs; | |
1069 | x->ofs += PLT_ENTRY_SIZE; | |
1070 | if (dyn_h->plt_offset < 0x2000) | |
1071 | elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset; | |
1072 | } | |
1073 | else | |
1074 | dyn_h->want_plt = 0; | |
1075 | ||
b34976b6 | 1076 | return TRUE; |
15bda425 JL |
1077 | } |
1078 | ||
1079 | /* Allocate space for a STUB entry. */ | |
1080 | ||
b34976b6 | 1081 | static bfd_boolean |
15bda425 JL |
1082 | allocate_global_data_stub (dyn_h, data) |
1083 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1084 | PTR data; | |
1085 | { | |
1086 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1087 | ||
1088 | if (dyn_h->want_stub | |
1089 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1090 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1091 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1092 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1093 | { | |
1094 | dyn_h->stub_offset = x->ofs; | |
1095 | x->ofs += sizeof (plt_stub); | |
1096 | } | |
1097 | else | |
1098 | dyn_h->want_stub = 0; | |
b34976b6 | 1099 | return TRUE; |
15bda425 JL |
1100 | } |
1101 | ||
1102 | /* Allocate space for a FPTR entry. */ | |
1103 | ||
b34976b6 | 1104 | static bfd_boolean |
15bda425 JL |
1105 | allocate_global_data_opd (dyn_h, data) |
1106 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1107 | PTR data; | |
1108 | { | |
1109 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1110 | ||
1111 | if (dyn_h->want_opd) | |
1112 | { | |
1113 | struct elf_link_hash_entry *h = dyn_h->h; | |
fe8bc63d | 1114 | |
15bda425 JL |
1115 | if (h) |
1116 | while (h->root.type == bfd_link_hash_indirect | |
1117 | || h->root.type == bfd_link_hash_warning) | |
1118 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1119 | ||
1120 | /* We never need an opd entry for a symbol which is not | |
1121 | defined by this output file. */ | |
3db4b612 JL |
1122 | if (h && (h->root.type == bfd_link_hash_undefined |
1123 | || h->root.u.def.section->output_section == NULL)) | |
15bda425 JL |
1124 | dyn_h->want_opd = 0; |
1125 | ||
1126 | /* If we are creating a shared library, took the address of a local | |
1127 | function or might export this function from this object file, then | |
1128 | we have to create an opd descriptor. */ | |
1129 | else if (x->info->shared | |
1130 | || h == NULL | |
47b7c2db | 1131 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI) |
3db4b612 JL |
1132 | || (h->root.type == bfd_link_hash_defined |
1133 | || h->root.type == bfd_link_hash_defweak)) | |
15bda425 JL |
1134 | { |
1135 | /* If we are creating a shared library, then we will have to | |
1136 | create a runtime relocation for the symbol to properly | |
1137 | initialize the .opd entry. Make sure the symbol gets | |
1138 | added to the dynamic symbol table. */ | |
1139 | if (x->info->shared | |
1140 | && (h == NULL || (h->dynindx == -1))) | |
1141 | { | |
1142 | bfd *owner; | |
1143 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1144 | ||
1145 | if (!_bfd_elf64_link_record_local_dynamic_symbol | |
1146 | (x->info, owner, dyn_h->sym_indx)) | |
b34976b6 | 1147 | return FALSE; |
15bda425 JL |
1148 | } |
1149 | ||
1150 | /* This may not be necessary or desirable anymore now that | |
1151 | we have some support for dealing with section symbols | |
1152 | in dynamic relocs. But name munging does make the result | |
1153 | much easier to debug. ie, the EPLT reloc will reference | |
1154 | a symbol like .foobar, instead of .text + offset. */ | |
1155 | if (x->info->shared && h) | |
1156 | { | |
1157 | char *new_name; | |
1158 | struct elf_link_hash_entry *nh; | |
1159 | ||
1160 | new_name = alloca (strlen (h->root.root.string) + 2); | |
1161 | new_name[0] = '.'; | |
1162 | strcpy (new_name + 1, h->root.root.string); | |
1163 | ||
1164 | nh = elf_link_hash_lookup (elf_hash_table (x->info), | |
b34976b6 | 1165 | new_name, TRUE, TRUE, TRUE); |
15bda425 JL |
1166 | |
1167 | nh->root.type = h->root.type; | |
1168 | nh->root.u.def.value = h->root.u.def.value; | |
1169 | nh->root.u.def.section = h->root.u.def.section; | |
1170 | ||
1171 | if (! bfd_elf64_link_record_dynamic_symbol (x->info, nh)) | |
b34976b6 | 1172 | return FALSE; |
15bda425 JL |
1173 | |
1174 | } | |
1175 | dyn_h->opd_offset = x->ofs; | |
1176 | x->ofs += OPD_ENTRY_SIZE; | |
1177 | } | |
1178 | ||
1179 | /* Otherwise we do not need an opd entry. */ | |
1180 | else | |
1181 | dyn_h->want_opd = 0; | |
1182 | } | |
b34976b6 | 1183 | return TRUE; |
15bda425 JL |
1184 | } |
1185 | ||
1186 | /* HP requires the EI_OSABI field to be filled in. The assignment to | |
1187 | EI_ABIVERSION may not be strictly necessary. */ | |
1188 | ||
1189 | static void | |
1190 | elf64_hppa_post_process_headers (abfd, link_info) | |
1191 | bfd * abfd; | |
1192 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
1193 | { | |
1194 | Elf_Internal_Ehdr * i_ehdrp; | |
1195 | ||
1196 | i_ehdrp = elf_elfheader (abfd); | |
1197 | ||
d952f17a AM |
1198 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) |
1199 | { | |
1200 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
1201 | } | |
1202 | else | |
1203 | { | |
1204 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX; | |
1205 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
1206 | } | |
15bda425 JL |
1207 | } |
1208 | ||
1209 | /* Create function descriptor section (.opd). This section is called .opd | |
1210 | because it contains "official prodecure descriptors". The "official" | |
1211 | refers to the fact that these descriptors are used when taking the address | |
1212 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1213 | ||
b34976b6 | 1214 | static bfd_boolean |
15bda425 JL |
1215 | get_opd (abfd, info, hppa_info) |
1216 | bfd *abfd; | |
edd21aca | 1217 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1218 | struct elf64_hppa_link_hash_table *hppa_info; |
1219 | { | |
1220 | asection *opd; | |
1221 | bfd *dynobj; | |
1222 | ||
1223 | opd = hppa_info->opd_sec; | |
1224 | if (!opd) | |
1225 | { | |
1226 | dynobj = hppa_info->root.dynobj; | |
1227 | if (!dynobj) | |
1228 | hppa_info->root.dynobj = dynobj = abfd; | |
1229 | ||
1230 | opd = bfd_make_section (dynobj, ".opd"); | |
1231 | if (!opd | |
1232 | || !bfd_set_section_flags (dynobj, opd, | |
1233 | (SEC_ALLOC | |
1234 | | SEC_LOAD | |
1235 | | SEC_HAS_CONTENTS | |
1236 | | SEC_IN_MEMORY | |
1237 | | SEC_LINKER_CREATED)) | |
1238 | || !bfd_set_section_alignment (abfd, opd, 3)) | |
1239 | { | |
1240 | BFD_ASSERT (0); | |
b34976b6 | 1241 | return FALSE; |
15bda425 JL |
1242 | } |
1243 | ||
1244 | hppa_info->opd_sec = opd; | |
1245 | } | |
1246 | ||
b34976b6 | 1247 | return TRUE; |
15bda425 JL |
1248 | } |
1249 | ||
1250 | /* Create the PLT section. */ | |
1251 | ||
b34976b6 | 1252 | static bfd_boolean |
15bda425 JL |
1253 | get_plt (abfd, info, hppa_info) |
1254 | bfd *abfd; | |
edd21aca | 1255 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1256 | struct elf64_hppa_link_hash_table *hppa_info; |
1257 | { | |
1258 | asection *plt; | |
1259 | bfd *dynobj; | |
1260 | ||
1261 | plt = hppa_info->plt_sec; | |
1262 | if (!plt) | |
1263 | { | |
1264 | dynobj = hppa_info->root.dynobj; | |
1265 | if (!dynobj) | |
1266 | hppa_info->root.dynobj = dynobj = abfd; | |
1267 | ||
1268 | plt = bfd_make_section (dynobj, ".plt"); | |
1269 | if (!plt | |
1270 | || !bfd_set_section_flags (dynobj, plt, | |
1271 | (SEC_ALLOC | |
1272 | | SEC_LOAD | |
1273 | | SEC_HAS_CONTENTS | |
1274 | | SEC_IN_MEMORY | |
1275 | | SEC_LINKER_CREATED)) | |
1276 | || !bfd_set_section_alignment (abfd, plt, 3)) | |
1277 | { | |
1278 | BFD_ASSERT (0); | |
b34976b6 | 1279 | return FALSE; |
15bda425 JL |
1280 | } |
1281 | ||
1282 | hppa_info->plt_sec = plt; | |
1283 | } | |
1284 | ||
b34976b6 | 1285 | return TRUE; |
15bda425 JL |
1286 | } |
1287 | ||
1288 | /* Create the DLT section. */ | |
1289 | ||
b34976b6 | 1290 | static bfd_boolean |
15bda425 JL |
1291 | get_dlt (abfd, info, hppa_info) |
1292 | bfd *abfd; | |
edd21aca | 1293 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1294 | struct elf64_hppa_link_hash_table *hppa_info; |
1295 | { | |
1296 | asection *dlt; | |
1297 | bfd *dynobj; | |
1298 | ||
1299 | dlt = hppa_info->dlt_sec; | |
1300 | if (!dlt) | |
1301 | { | |
1302 | dynobj = hppa_info->root.dynobj; | |
1303 | if (!dynobj) | |
1304 | hppa_info->root.dynobj = dynobj = abfd; | |
1305 | ||
1306 | dlt = bfd_make_section (dynobj, ".dlt"); | |
1307 | if (!dlt | |
1308 | || !bfd_set_section_flags (dynobj, dlt, | |
1309 | (SEC_ALLOC | |
1310 | | SEC_LOAD | |
1311 | | SEC_HAS_CONTENTS | |
1312 | | SEC_IN_MEMORY | |
1313 | | SEC_LINKER_CREATED)) | |
1314 | || !bfd_set_section_alignment (abfd, dlt, 3)) | |
1315 | { | |
1316 | BFD_ASSERT (0); | |
b34976b6 | 1317 | return FALSE; |
15bda425 JL |
1318 | } |
1319 | ||
1320 | hppa_info->dlt_sec = dlt; | |
1321 | } | |
1322 | ||
b34976b6 | 1323 | return TRUE; |
15bda425 JL |
1324 | } |
1325 | ||
1326 | /* Create the stubs section. */ | |
1327 | ||
b34976b6 | 1328 | static bfd_boolean |
15bda425 JL |
1329 | get_stub (abfd, info, hppa_info) |
1330 | bfd *abfd; | |
edd21aca | 1331 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1332 | struct elf64_hppa_link_hash_table *hppa_info; |
1333 | { | |
1334 | asection *stub; | |
1335 | bfd *dynobj; | |
1336 | ||
1337 | stub = hppa_info->stub_sec; | |
1338 | if (!stub) | |
1339 | { | |
1340 | dynobj = hppa_info->root.dynobj; | |
1341 | if (!dynobj) | |
1342 | hppa_info->root.dynobj = dynobj = abfd; | |
1343 | ||
1344 | stub = bfd_make_section (dynobj, ".stub"); | |
1345 | if (!stub | |
1346 | || !bfd_set_section_flags (dynobj, stub, | |
1347 | (SEC_ALLOC | |
1348 | | SEC_LOAD | |
1349 | | SEC_HAS_CONTENTS | |
1350 | | SEC_IN_MEMORY | |
1351 | | SEC_READONLY | |
1352 | | SEC_LINKER_CREATED)) | |
1353 | || !bfd_set_section_alignment (abfd, stub, 3)) | |
1354 | { | |
1355 | BFD_ASSERT (0); | |
b34976b6 | 1356 | return FALSE; |
15bda425 JL |
1357 | } |
1358 | ||
1359 | hppa_info->stub_sec = stub; | |
1360 | } | |
1361 | ||
b34976b6 | 1362 | return TRUE; |
15bda425 JL |
1363 | } |
1364 | ||
1365 | /* Create sections necessary for dynamic linking. This is only a rough | |
1366 | cut and will likely change as we learn more about the somewhat | |
1367 | unusual dynamic linking scheme HP uses. | |
1368 | ||
1369 | .stub: | |
1370 | Contains code to implement cross-space calls. The first time one | |
1371 | of the stubs is used it will call into the dynamic linker, later | |
1372 | calls will go straight to the target. | |
1373 | ||
1374 | The only stub we support right now looks like | |
1375 | ||
1376 | ldd OFFSET(%dp),%r1 | |
1377 | bve %r0(%r1) | |
1378 | ldd OFFSET+8(%dp),%dp | |
1379 | ||
1380 | Other stubs may be needed in the future. We may want the remove | |
1381 | the break/nop instruction. It is only used right now to keep the | |
1382 | offset of a .plt entry and a .stub entry in sync. | |
1383 | ||
1384 | .dlt: | |
1385 | This is what most people call the .got. HP used a different name. | |
1386 | Losers. | |
1387 | ||
1388 | .rela.dlt: | |
1389 | Relocations for the DLT. | |
1390 | ||
1391 | .plt: | |
1392 | Function pointers as address,gp pairs. | |
1393 | ||
1394 | .rela.plt: | |
1395 | Should contain dynamic IPLT (and EPLT?) relocations. | |
1396 | ||
1397 | .opd: | |
fe8bc63d | 1398 | FPTRS |
15bda425 JL |
1399 | |
1400 | .rela.opd: | |
1401 | EPLT relocations for symbols exported from shared libraries. */ | |
1402 | ||
b34976b6 | 1403 | static bfd_boolean |
15bda425 JL |
1404 | elf64_hppa_create_dynamic_sections (abfd, info) |
1405 | bfd *abfd; | |
1406 | struct bfd_link_info *info; | |
1407 | { | |
1408 | asection *s; | |
1409 | ||
1410 | if (! get_stub (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1411 | return FALSE; |
15bda425 JL |
1412 | |
1413 | if (! get_dlt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1414 | return FALSE; |
15bda425 JL |
1415 | |
1416 | if (! get_plt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1417 | return FALSE; |
15bda425 JL |
1418 | |
1419 | if (! get_opd (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1420 | return FALSE; |
15bda425 JL |
1421 | |
1422 | s = bfd_make_section(abfd, ".rela.dlt"); | |
1423 | if (s == NULL | |
1424 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1425 | | SEC_HAS_CONTENTS | |
1426 | | SEC_IN_MEMORY | |
1427 | | SEC_READONLY | |
1428 | | SEC_LINKER_CREATED)) | |
1429 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1430 | return FALSE; |
15bda425 JL |
1431 | elf64_hppa_hash_table (info)->dlt_rel_sec = s; |
1432 | ||
1433 | s = bfd_make_section(abfd, ".rela.plt"); | |
1434 | if (s == NULL | |
1435 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1436 | | SEC_HAS_CONTENTS | |
1437 | | SEC_IN_MEMORY | |
1438 | | SEC_READONLY | |
1439 | | SEC_LINKER_CREATED)) | |
1440 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1441 | return FALSE; |
15bda425 JL |
1442 | elf64_hppa_hash_table (info)->plt_rel_sec = s; |
1443 | ||
1444 | s = bfd_make_section(abfd, ".rela.data"); | |
1445 | if (s == NULL | |
1446 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1447 | | SEC_HAS_CONTENTS | |
1448 | | SEC_IN_MEMORY | |
1449 | | SEC_READONLY | |
1450 | | SEC_LINKER_CREATED)) | |
1451 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1452 | return FALSE; |
15bda425 JL |
1453 | elf64_hppa_hash_table (info)->other_rel_sec = s; |
1454 | ||
1455 | s = bfd_make_section(abfd, ".rela.opd"); | |
1456 | if (s == NULL | |
1457 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1458 | | SEC_HAS_CONTENTS | |
1459 | | SEC_IN_MEMORY | |
1460 | | SEC_READONLY | |
1461 | | SEC_LINKER_CREATED)) | |
1462 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 1463 | return FALSE; |
15bda425 JL |
1464 | elf64_hppa_hash_table (info)->opd_rel_sec = s; |
1465 | ||
b34976b6 | 1466 | return TRUE; |
15bda425 JL |
1467 | } |
1468 | ||
1469 | /* Allocate dynamic relocations for those symbols that turned out | |
1470 | to be dynamic. */ | |
1471 | ||
b34976b6 | 1472 | static bfd_boolean |
15bda425 JL |
1473 | allocate_dynrel_entries (dyn_h, data) |
1474 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1475 | PTR data; | |
1476 | { | |
1477 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1478 | struct elf64_hppa_link_hash_table *hppa_info; | |
1479 | struct elf64_hppa_dyn_reloc_entry *rent; | |
b34976b6 | 1480 | bfd_boolean dynamic_symbol, shared; |
15bda425 JL |
1481 | |
1482 | hppa_info = elf64_hppa_hash_table (x->info); | |
1483 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info); | |
1484 | shared = x->info->shared; | |
1485 | ||
1486 | /* We may need to allocate relocations for a non-dynamic symbol | |
1487 | when creating a shared library. */ | |
1488 | if (!dynamic_symbol && !shared) | |
b34976b6 | 1489 | return TRUE; |
15bda425 JL |
1490 | |
1491 | /* Take care of the normal data relocations. */ | |
1492 | ||
1493 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
1494 | { | |
d663e1cd JL |
1495 | /* Allocate one iff we are building a shared library, the relocation |
1496 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
1497 | if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
1498 | continue; | |
1499 | ||
15bda425 JL |
1500 | hppa_info->other_rel_sec->_raw_size += sizeof (Elf64_External_Rela); |
1501 | ||
1502 | /* Make sure this symbol gets into the dynamic symbol table if it is | |
1503 | not already recorded. ?!? This should not be in the loop since | |
1504 | the symbol need only be added once. */ | |
47b7c2db AM |
1505 | if (dyn_h->h == 0 |
1506 | || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI)) | |
15bda425 JL |
1507 | if (!_bfd_elf64_link_record_local_dynamic_symbol |
1508 | (x->info, rent->sec->owner, dyn_h->sym_indx)) | |
b34976b6 | 1509 | return FALSE; |
15bda425 JL |
1510 | } |
1511 | ||
1512 | /* Take care of the GOT and PLT relocations. */ | |
1513 | ||
1514 | if ((dynamic_symbol || shared) && dyn_h->want_dlt) | |
1515 | hppa_info->dlt_rel_sec->_raw_size += sizeof (Elf64_External_Rela); | |
1516 | ||
1517 | /* If we are building a shared library, then every symbol that has an | |
1518 | opd entry will need an EPLT relocation to relocate the symbol's address | |
1519 | and __gp value based on the runtime load address. */ | |
1520 | if (shared && dyn_h->want_opd) | |
1521 | hppa_info->opd_rel_sec->_raw_size += sizeof (Elf64_External_Rela); | |
1522 | ||
1523 | if (dyn_h->want_plt && dynamic_symbol) | |
1524 | { | |
1525 | bfd_size_type t = 0; | |
1526 | ||
1527 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
1528 | shared libraries get two REL relocations. Local symbols in | |
1529 | main applications get nothing. */ | |
1530 | if (dynamic_symbol) | |
1531 | t = sizeof (Elf64_External_Rela); | |
1532 | else if (shared) | |
1533 | t = 2 * sizeof (Elf64_External_Rela); | |
1534 | ||
1535 | hppa_info->plt_rel_sec->_raw_size += t; | |
1536 | } | |
1537 | ||
b34976b6 | 1538 | return TRUE; |
15bda425 JL |
1539 | } |
1540 | ||
1541 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1542 | regular object. */ | |
1543 | ||
b34976b6 | 1544 | static bfd_boolean |
15bda425 | 1545 | elf64_hppa_adjust_dynamic_symbol (info, h) |
edd21aca | 1546 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1547 | struct elf_link_hash_entry *h; |
1548 | { | |
1549 | /* ??? Undefined symbols with PLT entries should be re-defined | |
1550 | to be the PLT entry. */ | |
1551 | ||
1552 | /* If this is a weak symbol, and there is a real definition, the | |
1553 | processor independent code will have arranged for us to see the | |
1554 | real definition first, and we can just use the same value. */ | |
1555 | if (h->weakdef != NULL) | |
1556 | { | |
1557 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1558 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1559 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1560 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 1561 | return TRUE; |
15bda425 JL |
1562 | } |
1563 | ||
1564 | /* If this is a reference to a symbol defined by a dynamic object which | |
1565 | is not a function, we might allocate the symbol in our .dynbss section | |
1566 | and allocate a COPY dynamic relocation. | |
1567 | ||
1568 | But PA64 code is canonically PIC, so as a rule we can avoid this sort | |
1569 | of hackery. */ | |
1570 | ||
b34976b6 | 1571 | return TRUE; |
15bda425 JL |
1572 | } |
1573 | ||
47b7c2db AM |
1574 | /* This function is called via elf_link_hash_traverse to mark millicode |
1575 | symbols with a dynindx of -1 and to remove the string table reference | |
1576 | from the dynamic symbol table. If the symbol is not a millicode symbol, | |
1577 | elf64_hppa_mark_exported_functions is called. */ | |
1578 | ||
b34976b6 | 1579 | static bfd_boolean |
47b7c2db AM |
1580 | elf64_hppa_mark_milli_and_exported_functions (h, data) |
1581 | struct elf_link_hash_entry *h; | |
1582 | PTR data; | |
1583 | { | |
1584 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
1585 | struct elf_link_hash_entry *elf = h; | |
1586 | ||
1587 | if (elf->root.type == bfd_link_hash_warning) | |
1588 | elf = (struct elf_link_hash_entry *) elf->root.u.i.link; | |
1589 | ||
1590 | if (elf->type == STT_PARISC_MILLI) | |
1591 | { | |
1592 | if (elf->dynindx != -1) | |
1593 | { | |
1594 | elf->dynindx = -1; | |
1595 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1596 | elf->dynstr_index); | |
1597 | } | |
b34976b6 | 1598 | return TRUE; |
47b7c2db AM |
1599 | } |
1600 | ||
1601 | return elf64_hppa_mark_exported_functions (h, data); | |
1602 | } | |
1603 | ||
15bda425 JL |
1604 | /* Set the final sizes of the dynamic sections and allocate memory for |
1605 | the contents of our special sections. */ | |
1606 | ||
b34976b6 | 1607 | static bfd_boolean |
15bda425 JL |
1608 | elf64_hppa_size_dynamic_sections (output_bfd, info) |
1609 | bfd *output_bfd; | |
1610 | struct bfd_link_info *info; | |
1611 | { | |
1612 | bfd *dynobj; | |
1613 | asection *s; | |
b34976b6 AM |
1614 | bfd_boolean plt; |
1615 | bfd_boolean relocs; | |
1616 | bfd_boolean reltext; | |
15bda425 JL |
1617 | struct elf64_hppa_allocate_data data; |
1618 | struct elf64_hppa_link_hash_table *hppa_info; | |
1619 | ||
1620 | hppa_info = elf64_hppa_hash_table (info); | |
1621 | ||
1622 | dynobj = elf_hash_table (info)->dynobj; | |
1623 | BFD_ASSERT (dynobj != NULL); | |
1624 | ||
47b7c2db AM |
1625 | /* Mark each function this program exports so that we will allocate |
1626 | space in the .opd section for each function's FPTR. If we are | |
1627 | creating dynamic sections, change the dynamic index of millicode | |
1628 | symbols to -1 and remove them from the string table for .dynstr. | |
1629 | ||
1630 | We have to traverse the main linker hash table since we have to | |
1631 | find functions which may not have been mentioned in any relocs. */ | |
1632 | elf_link_hash_traverse (elf_hash_table (info), | |
1633 | (elf_hash_table (info)->dynamic_sections_created | |
1634 | ? elf64_hppa_mark_milli_and_exported_functions | |
1635 | : elf64_hppa_mark_exported_functions), | |
1636 | info); | |
1637 | ||
15bda425 JL |
1638 | if (elf_hash_table (info)->dynamic_sections_created) |
1639 | { | |
1640 | /* Set the contents of the .interp section to the interpreter. */ | |
1641 | if (! info->shared) | |
1642 | { | |
1643 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1644 | BFD_ASSERT (s != NULL); | |
1645 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1646 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1647 | } | |
1648 | } | |
1649 | else | |
1650 | { | |
1651 | /* We may have created entries in the .rela.got section. | |
1652 | However, if we are not creating the dynamic sections, we will | |
1653 | not actually use these entries. Reset the size of .rela.dlt, | |
1654 | which will cause it to get stripped from the output file | |
1655 | below. */ | |
1656 | s = bfd_get_section_by_name (dynobj, ".rela.dlt"); | |
1657 | if (s != NULL) | |
1658 | s->_raw_size = 0; | |
1659 | } | |
1660 | ||
1661 | /* Allocate the GOT entries. */ | |
1662 | ||
1663 | data.info = info; | |
1664 | if (elf64_hppa_hash_table (info)->dlt_sec) | |
1665 | { | |
1666 | data.ofs = 0x0; | |
1667 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1668 | allocate_global_data_dlt, &data); | |
1669 | hppa_info->dlt_sec->_raw_size = data.ofs; | |
1670 | ||
1671 | data.ofs = 0x0; | |
1672 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1673 | allocate_global_data_plt, &data); | |
1674 | hppa_info->plt_sec->_raw_size = data.ofs; | |
1675 | ||
1676 | data.ofs = 0x0; | |
1677 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1678 | allocate_global_data_stub, &data); | |
1679 | hppa_info->stub_sec->_raw_size = data.ofs; | |
1680 | } | |
1681 | ||
15bda425 JL |
1682 | /* Allocate space for entries in the .opd section. */ |
1683 | if (elf64_hppa_hash_table (info)->opd_sec) | |
1684 | { | |
1685 | data.ofs = 0; | |
1686 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1687 | allocate_global_data_opd, &data); | |
1688 | hppa_info->opd_sec->_raw_size = data.ofs; | |
1689 | } | |
1690 | ||
1691 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1692 | if (hppa_info->root.dynamic_sections_created) | |
1693 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1694 | allocate_dynrel_entries, &data); | |
1695 | ||
1696 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 AM |
1697 | plt = FALSE; |
1698 | relocs = FALSE; | |
1699 | reltext = FALSE; | |
15bda425 JL |
1700 | for (s = dynobj->sections; s != NULL; s = s->next) |
1701 | { | |
1702 | const char *name; | |
b34976b6 | 1703 | bfd_boolean strip; |
15bda425 JL |
1704 | |
1705 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1706 | continue; | |
1707 | ||
1708 | /* It's OK to base decisions on the section name, because none | |
1709 | of the dynobj section names depend upon the input files. */ | |
1710 | name = bfd_get_section_name (dynobj, s); | |
1711 | ||
1712 | strip = 0; | |
1713 | ||
1714 | if (strcmp (name, ".plt") == 0) | |
1715 | { | |
d663e1cd | 1716 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 JL |
1717 | if (s->_raw_size == 0) |
1718 | { | |
b34976b6 | 1719 | strip = TRUE; |
15bda425 JL |
1720 | } |
1721 | else | |
1722 | { | |
1723 | /* Remember whether there is a PLT. */ | |
b34976b6 | 1724 | plt = TRUE; |
15bda425 JL |
1725 | } |
1726 | } | |
1727 | else if (strcmp (name, ".dlt") == 0) | |
1728 | { | |
d663e1cd | 1729 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 JL |
1730 | if (s->_raw_size == 0) |
1731 | { | |
b34976b6 | 1732 | strip = TRUE; |
15bda425 JL |
1733 | } |
1734 | } | |
1735 | else if (strcmp (name, ".opd") == 0) | |
1736 | { | |
d663e1cd | 1737 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 JL |
1738 | if (s->_raw_size == 0) |
1739 | { | |
b34976b6 | 1740 | strip = TRUE; |
15bda425 JL |
1741 | } |
1742 | } | |
d663e1cd | 1743 | else if (strncmp (name, ".rela", 5) == 0) |
15bda425 | 1744 | { |
d663e1cd JL |
1745 | /* If we don't need this section, strip it from the output file. |
1746 | This is mostly to handle .rela.bss and .rela.plt. We must | |
1747 | create both sections in create_dynamic_sections, because they | |
1748 | must be created before the linker maps input sections to output | |
1749 | sections. The linker does that before adjust_dynamic_symbol | |
1750 | is called, and it is that function which decides whether | |
1751 | anything needs to go into these sections. */ | |
15bda425 JL |
1752 | if (s->_raw_size == 0) |
1753 | { | |
1754 | /* If we don't need this section, strip it from the | |
1755 | output file. This is mostly to handle .rela.bss and | |
1756 | .rela.plt. We must create both sections in | |
1757 | create_dynamic_sections, because they must be created | |
1758 | before the linker maps input sections to output | |
1759 | sections. The linker does that before | |
1760 | adjust_dynamic_symbol is called, and it is that | |
1761 | function which decides whether anything needs to go | |
1762 | into these sections. */ | |
b34976b6 | 1763 | strip = TRUE; |
15bda425 JL |
1764 | } |
1765 | else | |
1766 | { | |
1767 | asection *target; | |
1768 | ||
1769 | /* Remember whether there are any reloc sections other | |
1770 | than .rela.plt. */ | |
1771 | if (strcmp (name, ".rela.plt") != 0) | |
1772 | { | |
1773 | const char *outname; | |
1774 | ||
b34976b6 | 1775 | relocs = TRUE; |
15bda425 JL |
1776 | |
1777 | /* If this relocation section applies to a read only | |
1778 | section, then we probably need a DT_TEXTREL | |
1779 | entry. The entries in the .rela.plt section | |
1780 | really apply to the .got section, which we | |
1781 | created ourselves and so know is not readonly. */ | |
1782 | outname = bfd_get_section_name (output_bfd, | |
1783 | s->output_section); | |
1784 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
1785 | if (target != NULL | |
1786 | && (target->flags & SEC_READONLY) != 0 | |
1787 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1788 | reltext = TRUE; |
15bda425 JL |
1789 | } |
1790 | ||
1791 | /* We use the reloc_count field as a counter if we need | |
1792 | to copy relocs into the output file. */ | |
1793 | s->reloc_count = 0; | |
1794 | } | |
1795 | } | |
1796 | else if (strncmp (name, ".dlt", 4) != 0 | |
1797 | && strcmp (name, ".stub") != 0 | |
1798 | && strcmp (name, ".got") != 0) | |
1799 | { | |
1800 | /* It's not one of our sections, so don't allocate space. */ | |
1801 | continue; | |
1802 | } | |
1803 | ||
1804 | if (strip) | |
1805 | { | |
1806 | _bfd_strip_section_from_output (info, s); | |
1807 | continue; | |
1808 | } | |
1809 | ||
1810 | /* Allocate memory for the section contents if it has not | |
832d951b AM |
1811 | been allocated already. We use bfd_zalloc here in case |
1812 | unused entries are not reclaimed before the section's | |
1813 | contents are written out. This should not happen, but this | |
1814 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1815 | garbage. */ | |
15bda425 JL |
1816 | if (s->contents == NULL) |
1817 | { | |
7a9af8c4 | 1818 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
15bda425 | 1819 | if (s->contents == NULL && s->_raw_size != 0) |
b34976b6 | 1820 | return FALSE; |
15bda425 JL |
1821 | } |
1822 | } | |
1823 | ||
1824 | if (elf_hash_table (info)->dynamic_sections_created) | |
1825 | { | |
1826 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1827 | the PLT, it is how we communicate the __gp value of a load | |
1828 | module to the dynamic linker. */ | |
dc810e39 AM |
1829 | #define add_dynamic_entry(TAG, VAL) \ |
1830 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1831 | ||
1832 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) | |
1833 | || !add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 1834 | return FALSE; |
15bda425 JL |
1835 | |
1836 | /* Add some entries to the .dynamic section. We fill in the | |
1837 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1838 | must add the entries now so that we get the correct size for | |
1839 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1840 | dynamic linker and used by the debugger. */ | |
1841 | if (! info->shared) | |
1842 | { | |
dc810e39 AM |
1843 | if (!add_dynamic_entry (DT_DEBUG, 0) |
1844 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) | |
1845 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) | |
b34976b6 | 1846 | return FALSE; |
15bda425 JL |
1847 | } |
1848 | ||
f2482cb2 NC |
1849 | /* Force DT_FLAGS to always be set. |
1850 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1851 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1852 | return FALSE; |
f2482cb2 | 1853 | |
15bda425 JL |
1854 | if (plt) |
1855 | { | |
dc810e39 AM |
1856 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
1857 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1858 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1859 | return FALSE; |
15bda425 JL |
1860 | } |
1861 | ||
1862 | if (relocs) | |
1863 | { | |
dc810e39 AM |
1864 | if (!add_dynamic_entry (DT_RELA, 0) |
1865 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1866 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1867 | return FALSE; |
15bda425 JL |
1868 | } |
1869 | ||
1870 | if (reltext) | |
1871 | { | |
dc810e39 | 1872 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1873 | return FALSE; |
d6cf2879 | 1874 | info->flags |= DF_TEXTREL; |
15bda425 JL |
1875 | } |
1876 | } | |
dc810e39 | 1877 | #undef add_dynamic_entry |
15bda425 | 1878 | |
b34976b6 | 1879 | return TRUE; |
15bda425 JL |
1880 | } |
1881 | ||
1882 | /* Called after we have output the symbol into the dynamic symbol | |
1883 | table, but before we output the symbol into the normal symbol | |
1884 | table. | |
1885 | ||
1886 | For some symbols we had to change their address when outputting | |
1887 | the dynamic symbol table. We undo that change here so that | |
1888 | the symbols have their expected value in the normal symbol | |
1889 | table. Ick. */ | |
1890 | ||
b34976b6 | 1891 | static bfd_boolean |
15bda425 | 1892 | elf64_hppa_link_output_symbol_hook (abfd, info, name, sym, input_sec) |
edd21aca | 1893 | bfd *abfd ATTRIBUTE_UNUSED; |
15bda425 JL |
1894 | struct bfd_link_info *info; |
1895 | const char *name; | |
1896 | Elf_Internal_Sym *sym; | |
edd21aca | 1897 | asection *input_sec ATTRIBUTE_UNUSED; |
15bda425 JL |
1898 | { |
1899 | struct elf64_hppa_link_hash_table *hppa_info; | |
1900 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1901 | ||
1902 | /* We may be called with the file symbol or section symbols. | |
1903 | They never need munging, so it is safe to ignore them. */ | |
1904 | if (!name) | |
b34976b6 | 1905 | return TRUE; |
15bda425 JL |
1906 | |
1907 | /* Get the PA dyn_symbol (if any) associated with NAME. */ | |
1908 | hppa_info = elf64_hppa_hash_table (info); | |
1909 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1910 | name, FALSE, FALSE); |
15bda425 | 1911 | |
832d951b AM |
1912 | /* Function symbols for which we created .opd entries *may* have been |
1913 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1914 | ||
1915 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1916 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1917 | mark_exported_functions and check to see if it was overwritten | |
1918 | here instead of just checking dyn_h->h->dynindx. */ | |
1919 | if (dyn_h && dyn_h->want_opd && dyn_h->st_shndx != -1) | |
15bda425 JL |
1920 | { |
1921 | /* Restore the saved value and section index. */ | |
1922 | sym->st_value = dyn_h->st_value; | |
fe8bc63d | 1923 | sym->st_shndx = dyn_h->st_shndx; |
15bda425 JL |
1924 | } |
1925 | ||
b34976b6 | 1926 | return TRUE; |
15bda425 JL |
1927 | } |
1928 | ||
1929 | /* Finish up dynamic symbol handling. We set the contents of various | |
1930 | dynamic sections here. */ | |
1931 | ||
b34976b6 | 1932 | static bfd_boolean |
15bda425 JL |
1933 | elf64_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) |
1934 | bfd *output_bfd; | |
1935 | struct bfd_link_info *info; | |
1936 | struct elf_link_hash_entry *h; | |
1937 | Elf_Internal_Sym *sym; | |
1938 | { | |
1939 | asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel; | |
1940 | struct elf64_hppa_link_hash_table *hppa_info; | |
1941 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1942 | ||
1943 | hppa_info = elf64_hppa_hash_table (info); | |
1944 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1945 | h->root.root.string, FALSE, FALSE); |
15bda425 JL |
1946 | |
1947 | stub = hppa_info->stub_sec; | |
1948 | splt = hppa_info->plt_sec; | |
1949 | sdlt = hppa_info->dlt_sec; | |
1950 | sopd = hppa_info->opd_sec; | |
1951 | spltrel = hppa_info->plt_rel_sec; | |
1952 | sdltrel = hppa_info->dlt_rel_sec; | |
1953 | ||
15bda425 JL |
1954 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1955 | value when building the dynamic symbol table for a shared library. | |
1956 | At least for symbols that refer to functions. | |
1957 | ||
1958 | We will store a new value and section index into the symbol long | |
1959 | enough to output it into the dynamic symbol table, then we restore | |
1960 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
1961 | if (dyn_h && dyn_h->want_opd) | |
1962 | { | |
d663e1cd JL |
1963 | BFD_ASSERT (sopd != NULL) |
1964 | ||
15bda425 JL |
1965 | /* Save away the original value and section index so that we |
1966 | can restore them later. */ | |
1967 | dyn_h->st_value = sym->st_value; | |
1968 | dyn_h->st_shndx = sym->st_shndx; | |
1969 | ||
1970 | /* For the dynamic symbol table entry, we want the value to be | |
1971 | address of this symbol's entry within the .opd section. */ | |
1972 | sym->st_value = (dyn_h->opd_offset | |
1973 | + sopd->output_offset | |
1974 | + sopd->output_section->vma); | |
1975 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
1976 | sopd->output_section); | |
1977 | } | |
1978 | ||
1979 | /* Initialize a .plt entry if requested. */ | |
1980 | if (dyn_h && dyn_h->want_plt | |
1981 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
1982 | { | |
1983 | bfd_vma value; | |
1984 | Elf_Internal_Rela rel; | |
947216bf | 1985 | bfd_byte *loc; |
15bda425 | 1986 | |
d663e1cd JL |
1987 | BFD_ASSERT (splt != NULL && spltrel != NULL) |
1988 | ||
15bda425 JL |
1989 | /* We do not actually care about the value in the PLT entry |
1990 | if we are creating a shared library and the symbol is | |
1991 | still undefined, we create a dynamic relocation to fill | |
1992 | in the correct value. */ | |
1993 | if (info->shared && h->root.type == bfd_link_hash_undefined) | |
1994 | value = 0; | |
1995 | else | |
1996 | value = (h->root.u.def.value + h->root.u.def.section->vma); | |
1997 | ||
fe8bc63d | 1998 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
1999 | |
2000 | The format of a plt entry is | |
fe8bc63d | 2001 | <funcaddr> <__gp>. |
15bda425 JL |
2002 | |
2003 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 2004 | install the PLT entry. |
15bda425 JL |
2005 | |
2006 | We are modifying the in-memory PLT contents here, so we do not add | |
2007 | in the output_offset of the PLT section. */ | |
2008 | ||
2009 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset); | |
2010 | value = _bfd_get_gp_value (splt->output_section->owner); | |
2011 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8); | |
2012 | ||
2013 | /* Create a dynamic IPLT relocation for this entry. | |
2014 | ||
2015 | We are creating a relocation in the output file's PLT section, | |
2016 | which is included within the DLT secton. So we do need to include | |
2017 | the PLT's output_offset in the computation of the relocation's | |
2018 | address. */ | |
2019 | rel.r_offset = (dyn_h->plt_offset + splt->output_offset | |
2020 | + splt->output_section->vma); | |
2021 | rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT); | |
2022 | rel.r_addend = 0; | |
2023 | ||
947216bf AM |
2024 | loc = spltrel->contents; |
2025 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2026 | bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc); | |
15bda425 JL |
2027 | } |
2028 | ||
2029 | /* Initialize an external call stub entry if requested. */ | |
2030 | if (dyn_h && dyn_h->want_stub | |
2031 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
2032 | { | |
2033 | bfd_vma value; | |
2034 | int insn; | |
b352eebf | 2035 | unsigned int max_offset; |
15bda425 | 2036 | |
d663e1cd JL |
2037 | BFD_ASSERT (stub != NULL) |
2038 | ||
15bda425 JL |
2039 | /* Install the generic stub template. |
2040 | ||
2041 | We are modifying the contents of the stub section, so we do not | |
2042 | need to include the stub section's output_offset here. */ | |
2043 | memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub)); | |
2044 | ||
2045 | /* Fix up the first ldd instruction. | |
2046 | ||
2047 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2048 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2049 | |
2050 | Note the plt_offset value is the value of the PLT entry relative to | |
2051 | the start of the PLT section. These instructions will reference | |
2052 | data relative to the value of __gp, which may not necessarily have | |
2053 | the same address as the start of the PLT section. | |
2054 | ||
2055 | gp_offset contains the offset of __gp within the PLT section. */ | |
2056 | value = dyn_h->plt_offset - hppa_info->gp_offset; | |
fe8bc63d | 2057 | |
15bda425 | 2058 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset); |
b352eebf AM |
2059 | if (output_bfd->arch_info->mach >= 25) |
2060 | { | |
2061 | /* Wide mode allows 16 bit offsets. */ | |
2062 | max_offset = 32768; | |
2063 | insn &= ~ 0xfff1; | |
dc810e39 | 2064 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2065 | } |
2066 | else | |
2067 | { | |
2068 | max_offset = 8192; | |
2069 | insn &= ~ 0x3ff1; | |
dc810e39 | 2070 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2071 | } |
2072 | ||
2073 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2074 | { | |
2075 | (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"), | |
2076 | dyn_h->root.string, | |
2077 | (long) value); | |
b34976b6 | 2078 | return FALSE; |
b352eebf AM |
2079 | } |
2080 | ||
dc810e39 | 2081 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2082 | stub->contents + dyn_h->stub_offset); |
2083 | ||
2084 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2085 | value += 8; |
15bda425 | 2086 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8); |
b352eebf AM |
2087 | if (output_bfd->arch_info->mach >= 25) |
2088 | { | |
2089 | insn &= ~ 0xfff1; | |
dc810e39 | 2090 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2091 | } |
2092 | else | |
2093 | { | |
2094 | insn &= ~ 0x3ff1; | |
dc810e39 | 2095 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2096 | } |
dc810e39 | 2097 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2098 | stub->contents + dyn_h->stub_offset + 8); |
2099 | } | |
2100 | ||
b34976b6 | 2101 | return TRUE; |
15bda425 JL |
2102 | } |
2103 | ||
2104 | /* The .opd section contains FPTRs for each function this file | |
2105 | exports. Initialize the FPTR entries. */ | |
2106 | ||
b34976b6 | 2107 | static bfd_boolean |
15bda425 JL |
2108 | elf64_hppa_finalize_opd (dyn_h, data) |
2109 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2110 | PTR data; | |
2111 | { | |
2112 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2113 | struct elf64_hppa_link_hash_table *hppa_info; | |
3db4b612 | 2114 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2115 | asection *sopd; |
2116 | asection *sopdrel; | |
2117 | ||
2118 | hppa_info = elf64_hppa_hash_table (info); | |
2119 | sopd = hppa_info->opd_sec; | |
2120 | sopdrel = hppa_info->opd_rel_sec; | |
2121 | ||
3db4b612 | 2122 | if (h && dyn_h->want_opd) |
15bda425 JL |
2123 | { |
2124 | bfd_vma value; | |
2125 | ||
fe8bc63d | 2126 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2127 | |
2128 | We are modifying the contents of the OPD section in memory, so we | |
2129 | do not need to include its output offset in this computation. */ | |
2130 | memset (sopd->contents + dyn_h->opd_offset, 0, 16); | |
2131 | ||
2132 | value = (h->root.u.def.value | |
2133 | + h->root.u.def.section->output_section->vma | |
2134 | + h->root.u.def.section->output_offset); | |
2135 | ||
2136 | /* The next word is the address of the function. */ | |
2137 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16); | |
2138 | ||
2139 | /* The last word is our local __gp value. */ | |
2140 | value = _bfd_get_gp_value (sopd->output_section->owner); | |
2141 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24); | |
2142 | } | |
2143 | ||
2144 | /* If we are generating a shared library, we must generate EPLT relocations | |
2145 | for each entry in the .opd, even for static functions (they may have | |
2146 | had their address taken). */ | |
2147 | if (info->shared && dyn_h && dyn_h->want_opd) | |
2148 | { | |
947216bf AM |
2149 | Elf_Internal_Rela rel; |
2150 | bfd_byte *loc; | |
15bda425 JL |
2151 | int dynindx; |
2152 | ||
2153 | /* We may need to do a relocation against a local symbol, in | |
2154 | which case we have to look up it's dynamic symbol index off | |
2155 | the local symbol hash table. */ | |
2156 | if (h && h->dynindx != -1) | |
2157 | dynindx = h->dynindx; | |
2158 | else | |
2159 | dynindx | |
2160 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2161 | dyn_h->sym_indx); | |
2162 | ||
2163 | /* The offset of this relocation is the absolute address of the | |
2164 | .opd entry for this symbol. */ | |
2165 | rel.r_offset = (dyn_h->opd_offset + sopd->output_offset | |
2166 | + sopd->output_section->vma); | |
2167 | ||
2168 | /* If H is non-null, then we have an external symbol. | |
2169 | ||
2170 | It is imperative that we use a different dynamic symbol for the | |
2171 | EPLT relocation if the symbol has global scope. | |
2172 | ||
2173 | In the dynamic symbol table, the function symbol will have a value | |
2174 | which is address of the function's .opd entry. | |
2175 | ||
2176 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2177 | (if we did, the data in the .opd would reference itself rather | |
2178 | than the actual address of the function). Instead we have to use | |
2179 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2180 | function symbol. |
15bda425 JL |
2181 | |
2182 | We prefix the original symbol with a "." and use the new symbol in | |
2183 | the EPLT relocation. This new symbol has already been recorded in | |
2184 | the symbol table, we just have to look it up and use it. | |
2185 | ||
2186 | We do not have such problems with static functions because we do | |
2187 | not make their addresses in the dynamic symbol table point to | |
2188 | the .opd entry. Ultimately this should be safe since a static | |
2189 | function can not be directly referenced outside of its shared | |
2190 | library. | |
2191 | ||
2192 | We do have to play similar games for FPTR relocations in shared | |
2193 | libraries, including those for static symbols. See the FPTR | |
2194 | handling in elf64_hppa_finalize_dynreloc. */ | |
2195 | if (h) | |
2196 | { | |
2197 | char *new_name; | |
2198 | struct elf_link_hash_entry *nh; | |
2199 | ||
2200 | new_name = alloca (strlen (h->root.root.string) + 2); | |
2201 | new_name[0] = '.'; | |
2202 | strcpy (new_name + 1, h->root.root.string); | |
2203 | ||
2204 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
b34976b6 | 2205 | new_name, FALSE, FALSE, FALSE); |
15bda425 JL |
2206 | |
2207 | /* All we really want from the new symbol is its dynamic | |
2208 | symbol index. */ | |
2209 | dynindx = nh->dynindx; | |
2210 | } | |
2211 | ||
2212 | rel.r_addend = 0; | |
2213 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2214 | ||
947216bf AM |
2215 | loc = sopdrel->contents; |
2216 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2217 | bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc); | |
15bda425 | 2218 | } |
b34976b6 | 2219 | return TRUE; |
15bda425 JL |
2220 | } |
2221 | ||
2222 | /* The .dlt section contains addresses for items referenced through the | |
2223 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2224 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2225 | ||
b34976b6 | 2226 | static bfd_boolean |
15bda425 JL |
2227 | elf64_hppa_finalize_dlt (dyn_h, data) |
2228 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2229 | PTR data; | |
2230 | { | |
2231 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2232 | struct elf64_hppa_link_hash_table *hppa_info; | |
2233 | asection *sdlt, *sdltrel; | |
3db4b612 | 2234 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2235 | |
2236 | hppa_info = elf64_hppa_hash_table (info); | |
2237 | ||
2238 | sdlt = hppa_info->dlt_sec; | |
2239 | sdltrel = hppa_info->dlt_rel_sec; | |
2240 | ||
2241 | /* H/DYN_H may refer to a local variable and we know it's | |
2242 | address, so there is no need to create a relocation. Just install | |
2243 | the proper value into the DLT, note this shortcut can not be | |
2244 | skipped when building a shared library. */ | |
3db4b612 | 2245 | if (! info->shared && h && dyn_h->want_dlt) |
15bda425 JL |
2246 | { |
2247 | bfd_vma value; | |
2248 | ||
2249 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2250 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2251 | |
2252 | We include the OPD's output offset in this computation as | |
2253 | we are referring to an absolute address in the resulting | |
2254 | object file. */ | |
2255 | if (dyn_h->want_opd) | |
2256 | { | |
2257 | value = (dyn_h->opd_offset | |
2258 | + hppa_info->opd_sec->output_offset | |
2259 | + hppa_info->opd_sec->output_section->vma); | |
2260 | } | |
3db4b612 | 2261 | else if (h->root.u.def.section) |
15bda425 | 2262 | { |
3db4b612 | 2263 | value = h->root.u.def.value + h->root.u.def.section->output_offset; |
15bda425 JL |
2264 | if (h->root.u.def.section->output_section) |
2265 | value += h->root.u.def.section->output_section->vma; | |
2266 | else | |
2267 | value += h->root.u.def.section->vma; | |
2268 | } | |
3db4b612 JL |
2269 | else |
2270 | /* We have an undefined function reference. */ | |
2271 | value = 0; | |
15bda425 JL |
2272 | |
2273 | /* We do not need to include the output offset of the DLT section | |
2274 | here because we are modifying the in-memory contents. */ | |
2275 | bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset); | |
2276 | } | |
2277 | ||
2278 | /* Create a relocation for the DLT entry assocated with this symbol. | |
2279 | When building a shared library the symbol does not have to be dynamic. */ | |
2280 | if (dyn_h->want_dlt | |
2281 | && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared)) | |
2282 | { | |
947216bf AM |
2283 | Elf_Internal_Rela rel; |
2284 | bfd_byte *loc; | |
15bda425 JL |
2285 | int dynindx; |
2286 | ||
2287 | /* We may need to do a relocation against a local symbol, in | |
2288 | which case we have to look up it's dynamic symbol index off | |
2289 | the local symbol hash table. */ | |
2290 | if (h && h->dynindx != -1) | |
2291 | dynindx = h->dynindx; | |
2292 | else | |
2293 | dynindx | |
2294 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2295 | dyn_h->sym_indx); | |
2296 | ||
15bda425 JL |
2297 | /* Create a dynamic relocation for this entry. Do include the output |
2298 | offset of the DLT entry since we need an absolute address in the | |
2299 | resulting object file. */ | |
2300 | rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset | |
2301 | + sdlt->output_section->vma); | |
2302 | if (h && h->type == STT_FUNC) | |
2303 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); | |
2304 | else | |
2305 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2306 | rel.r_addend = 0; | |
2307 | ||
947216bf AM |
2308 | loc = sdltrel->contents; |
2309 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2310 | bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc); | |
15bda425 | 2311 | } |
b34976b6 | 2312 | return TRUE; |
15bda425 JL |
2313 | } |
2314 | ||
2315 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2316 | for dynamic functions used to initialize static data. */ | |
2317 | ||
b34976b6 | 2318 | static bfd_boolean |
15bda425 JL |
2319 | elf64_hppa_finalize_dynreloc (dyn_h, data) |
2320 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2321 | PTR data; | |
2322 | { | |
2323 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2324 | struct elf64_hppa_link_hash_table *hppa_info; | |
2325 | struct elf_link_hash_entry *h; | |
2326 | int dynamic_symbol; | |
2327 | ||
2328 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info); | |
2329 | ||
2330 | if (!dynamic_symbol && !info->shared) | |
b34976b6 | 2331 | return TRUE; |
15bda425 JL |
2332 | |
2333 | if (dyn_h->reloc_entries) | |
2334 | { | |
2335 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2336 | int dynindx; | |
2337 | ||
2338 | hppa_info = elf64_hppa_hash_table (info); | |
2339 | h = dyn_h->h; | |
2340 | ||
2341 | /* We may need to do a relocation against a local symbol, in | |
2342 | which case we have to look up it's dynamic symbol index off | |
2343 | the local symbol hash table. */ | |
2344 | if (h && h->dynindx != -1) | |
2345 | dynindx = h->dynindx; | |
2346 | else | |
2347 | dynindx | |
2348 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2349 | dyn_h->sym_indx); | |
2350 | ||
2351 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
2352 | { | |
947216bf AM |
2353 | Elf_Internal_Rela rel; |
2354 | bfd_byte *loc; | |
15bda425 | 2355 | |
d663e1cd JL |
2356 | /* Allocate one iff we are building a shared library, the relocation |
2357 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
2358 | if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
2359 | continue; | |
15bda425 | 2360 | |
fe8bc63d | 2361 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2362 | |
2363 | We need the output offset for the reloc's section because | |
2364 | we are creating an absolute address in the resulting object | |
2365 | file. */ | |
2366 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2367 | + rent->sec->output_section->vma); | |
2368 | ||
2369 | /* An FPTR64 relocation implies that we took the address of | |
2370 | a function and that the function has an entry in the .opd | |
2371 | section. We want the FPTR64 relocation to reference the | |
2372 | entry in .opd. | |
2373 | ||
2374 | We could munge the symbol value in the dynamic symbol table | |
2375 | (in fact we already do for functions with global scope) to point | |
2376 | to the .opd entry. Then we could use that dynamic symbol in | |
2377 | this relocation. | |
2378 | ||
2379 | Or we could do something sensible, not munge the symbol's | |
2380 | address and instead just use a different symbol to reference | |
2381 | the .opd entry. At least that seems sensible until you | |
2382 | realize there's no local dynamic symbols we can use for that | |
2383 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2384 | |
15bda425 JL |
2385 | We use a section symbol recorded by check_relocs as the |
2386 | base symbol for the relocation. The addend is the difference | |
2387 | between the section symbol and the address of the .opd entry. */ | |
3db4b612 | 2388 | if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) |
15bda425 JL |
2389 | { |
2390 | bfd_vma value, value2; | |
15bda425 JL |
2391 | |
2392 | /* First compute the address of the opd entry for this symbol. */ | |
2393 | value = (dyn_h->opd_offset | |
2394 | + hppa_info->opd_sec->output_section->vma | |
2395 | + hppa_info->opd_sec->output_offset); | |
2396 | ||
2397 | /* Compute the value of the start of the section with | |
2398 | the relocation. */ | |
2399 | value2 = (rent->sec->output_section->vma | |
2400 | + rent->sec->output_offset); | |
2401 | ||
2402 | /* Compute the difference between the start of the section | |
2403 | with the relocation and the opd entry. */ | |
2404 | value -= value2; | |
fe8bc63d | 2405 | |
15bda425 JL |
2406 | /* The result becomes the addend of the relocation. */ |
2407 | rel.r_addend = value; | |
2408 | ||
2409 | /* The section symbol becomes the symbol for the dynamic | |
2410 | relocation. */ | |
2411 | dynindx | |
2412 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2413 | rent->sec->owner, | |
2414 | rent->sec_symndx); | |
2415 | } | |
2416 | else | |
2417 | rel.r_addend = rent->addend; | |
2418 | ||
2419 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2420 | ||
947216bf AM |
2421 | loc = hppa_info->other_rel_sec->contents; |
2422 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2423 | * sizeof (Elf64_External_Rela)); | |
15bda425 | 2424 | bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner, |
947216bf | 2425 | &rel, loc); |
15bda425 JL |
2426 | } |
2427 | } | |
2428 | ||
b34976b6 | 2429 | return TRUE; |
15bda425 JL |
2430 | } |
2431 | ||
5ac81c74 JL |
2432 | /* Used to decide how to sort relocs in an optimal manner for the |
2433 | dynamic linker, before writing them out. */ | |
2434 | ||
2435 | static enum elf_reloc_type_class | |
2436 | elf64_hppa_reloc_type_class (rela) | |
2437 | const Elf_Internal_Rela *rela; | |
2438 | { | |
2439 | if (ELF64_R_SYM (rela->r_info) == 0) | |
2440 | return reloc_class_relative; | |
2441 | ||
2442 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2443 | { | |
2444 | case R_PARISC_IPLT: | |
2445 | return reloc_class_plt; | |
2446 | case R_PARISC_COPY: | |
2447 | return reloc_class_copy; | |
2448 | default: | |
2449 | return reloc_class_normal; | |
2450 | } | |
2451 | } | |
2452 | ||
15bda425 JL |
2453 | /* Finish up the dynamic sections. */ |
2454 | ||
b34976b6 | 2455 | static bfd_boolean |
15bda425 JL |
2456 | elf64_hppa_finish_dynamic_sections (output_bfd, info) |
2457 | bfd *output_bfd; | |
2458 | struct bfd_link_info *info; | |
2459 | { | |
2460 | bfd *dynobj; | |
2461 | asection *sdyn; | |
2462 | struct elf64_hppa_link_hash_table *hppa_info; | |
2463 | ||
2464 | hppa_info = elf64_hppa_hash_table (info); | |
2465 | ||
2466 | /* Finalize the contents of the .opd section. */ | |
2467 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2468 | elf64_hppa_finalize_opd, | |
2469 | info); | |
2470 | ||
2471 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2472 | elf64_hppa_finalize_dynreloc, | |
2473 | info); | |
2474 | ||
2475 | /* Finalize the contents of the .dlt section. */ | |
2476 | dynobj = elf_hash_table (info)->dynobj; | |
2477 | /* Finalize the contents of the .dlt section. */ | |
2478 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2479 | elf64_hppa_finalize_dlt, | |
2480 | info); | |
2481 | ||
15bda425 JL |
2482 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2483 | ||
2484 | if (elf_hash_table (info)->dynamic_sections_created) | |
2485 | { | |
2486 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2487 | |
2488 | BFD_ASSERT (sdyn != NULL); | |
2489 | ||
2490 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
2491 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2492 | for (; dyncon < dynconend; dyncon++) | |
2493 | { | |
2494 | Elf_Internal_Dyn dyn; | |
2495 | asection *s; | |
2496 | ||
2497 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2498 | ||
2499 | switch (dyn.d_tag) | |
2500 | { | |
2501 | default: | |
2502 | break; | |
2503 | ||
2504 | case DT_HP_LOAD_MAP: | |
2505 | /* Compute the absolute address of 16byte scratchpad area | |
2506 | for the dynamic linker. | |
2507 | ||
2508 | By convention the linker script will allocate the scratchpad | |
2509 | area at the start of the .data section. So all we have to | |
2510 | to is find the start of the .data section. */ | |
2511 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
2512 | dyn.d_un.d_ptr = s->vma; | |
2513 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2514 | break; | |
2515 | ||
2516 | case DT_PLTGOT: | |
2517 | /* HP's use PLTGOT to set the GOT register. */ | |
2518 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2519 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2520 | break; | |
2521 | ||
2522 | case DT_JMPREL: | |
2523 | s = hppa_info->plt_rel_sec; | |
2524 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2525 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2526 | break; | |
2527 | ||
2528 | case DT_PLTRELSZ: | |
2529 | s = hppa_info->plt_rel_sec; | |
2530 | dyn.d_un.d_val = s->_raw_size; | |
2531 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2532 | break; | |
2533 | ||
2534 | case DT_RELA: | |
2535 | s = hppa_info->other_rel_sec; | |
5ac81c74 | 2536 | if (! s || ! s->_raw_size) |
15bda425 | 2537 | s = hppa_info->dlt_rel_sec; |
5ac81c74 JL |
2538 | if (! s || ! s->_raw_size) |
2539 | s = hppa_info->opd_rel_sec; | |
15bda425 JL |
2540 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2541 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2542 | break; | |
2543 | ||
2544 | case DT_RELASZ: | |
2545 | s = hppa_info->other_rel_sec; | |
2546 | dyn.d_un.d_val = s->_raw_size; | |
2547 | s = hppa_info->dlt_rel_sec; | |
2548 | dyn.d_un.d_val += s->_raw_size; | |
2549 | s = hppa_info->opd_rel_sec; | |
2550 | dyn.d_un.d_val += s->_raw_size; | |
2551 | /* There is some question about whether or not the size of | |
2552 | the PLT relocs should be included here. HP's tools do | |
2553 | it, so we'll emulate them. */ | |
2554 | s = hppa_info->plt_rel_sec; | |
2555 | dyn.d_un.d_val += s->_raw_size; | |
2556 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2557 | break; | |
2558 | ||
2559 | } | |
2560 | } | |
2561 | } | |
2562 | ||
b34976b6 | 2563 | return TRUE; |
15bda425 JL |
2564 | } |
2565 | ||
15bda425 JL |
2566 | /* Return the number of additional phdrs we will need. |
2567 | ||
2568 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2569 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2570 | |
2571 | This routine indicates that the backend needs one additional program | |
2572 | header for that case. | |
2573 | ||
2574 | Note we do not have access to the link info structure here, so we have | |
2575 | to guess whether or not we are building a shared library based on the | |
2576 | existence of a .interp section. */ | |
2577 | ||
2578 | static int | |
2579 | elf64_hppa_additional_program_headers (abfd) | |
2580 | bfd *abfd; | |
2581 | { | |
2582 | asection *s; | |
2583 | ||
2584 | /* If we are creating a shared library, then we have to create a | |
2585 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2586 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2587 | if (! s) | |
2588 | return 1; | |
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | /* Allocate and initialize any program headers required by this | |
2593 | specific backend. | |
2594 | ||
2595 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2596 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2597 | |
2598 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2599 | for the HP linker. |
15bda425 JL |
2600 | |
2601 | Note we do not have access to the link info structure here, so we have | |
2602 | to guess whether or not we are building a shared library based on the | |
2603 | existence of a .interp section. */ | |
2604 | ||
b34976b6 | 2605 | static bfd_boolean |
15bda425 JL |
2606 | elf64_hppa_modify_segment_map (abfd) |
2607 | bfd *abfd; | |
2608 | { | |
edd21aca | 2609 | struct elf_segment_map *m; |
15bda425 JL |
2610 | asection *s; |
2611 | ||
2612 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2613 | if (! s) | |
2614 | { | |
2615 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2616 | if (m->p_type == PT_PHDR) | |
2617 | break; | |
2618 | if (m == NULL) | |
2619 | { | |
dc810e39 AM |
2620 | m = ((struct elf_segment_map *) |
2621 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2622 | if (m == NULL) |
b34976b6 | 2623 | return FALSE; |
15bda425 JL |
2624 | |
2625 | m->p_type = PT_PHDR; | |
2626 | m->p_flags = PF_R | PF_X; | |
2627 | m->p_flags_valid = 1; | |
2628 | m->p_paddr_valid = 1; | |
2629 | m->includes_phdrs = 1; | |
2630 | ||
2631 | m->next = elf_tdata (abfd)->segment_map; | |
2632 | elf_tdata (abfd)->segment_map = m; | |
2633 | } | |
2634 | } | |
2635 | ||
2636 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2637 | if (m->p_type == PT_LOAD) | |
2638 | { | |
0ba2a60e | 2639 | unsigned int i; |
15bda425 JL |
2640 | |
2641 | for (i = 0; i < m->count; i++) | |
2642 | { | |
2643 | /* The code "hint" is not really a hint. It is a requirement | |
2644 | for certain versions of the HP dynamic linker. Worse yet, | |
2645 | it must be set even if the shared library does not have | |
2646 | any code in its "text" segment (thus the check for .hash | |
2647 | to catch this situation). */ | |
2648 | if (m->sections[i]->flags & SEC_CODE | |
2649 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2650 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2651 | } | |
2652 | } | |
2653 | ||
b34976b6 | 2654 | return TRUE; |
15bda425 JL |
2655 | } |
2656 | ||
3fab46d0 AM |
2657 | /* Called when writing out an object file to decide the type of a |
2658 | symbol. */ | |
2659 | static int | |
2660 | elf64_hppa_elf_get_symbol_type (elf_sym, type) | |
2661 | Elf_Internal_Sym *elf_sym; | |
2662 | int type; | |
2663 | { | |
2664 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2665 | return STT_PARISC_MILLI; | |
2666 | else | |
2667 | return type; | |
2668 | } | |
2669 | ||
15bda425 JL |
2670 | /* The hash bucket size is the standard one, namely 4. */ |
2671 | ||
2672 | const struct elf_size_info hppa64_elf_size_info = | |
2673 | { | |
2674 | sizeof (Elf64_External_Ehdr), | |
2675 | sizeof (Elf64_External_Phdr), | |
2676 | sizeof (Elf64_External_Shdr), | |
2677 | sizeof (Elf64_External_Rel), | |
2678 | sizeof (Elf64_External_Rela), | |
2679 | sizeof (Elf64_External_Sym), | |
2680 | sizeof (Elf64_External_Dyn), | |
2681 | sizeof (Elf_External_Note), | |
2682 | 4, | |
2683 | 1, | |
45d6a902 | 2684 | 64, 3, |
15bda425 JL |
2685 | ELFCLASS64, EV_CURRENT, |
2686 | bfd_elf64_write_out_phdrs, | |
2687 | bfd_elf64_write_shdrs_and_ehdr, | |
2688 | bfd_elf64_write_relocs, | |
73ff0d56 | 2689 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
2690 | bfd_elf64_swap_symbol_out, |
2691 | bfd_elf64_slurp_reloc_table, | |
2692 | bfd_elf64_slurp_symbol_table, | |
2693 | bfd_elf64_swap_dyn_in, | |
2694 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
2695 | bfd_elf64_swap_reloc_in, |
2696 | bfd_elf64_swap_reloc_out, | |
2697 | bfd_elf64_swap_reloca_in, | |
2698 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
2699 | }; |
2700 | ||
2701 | #define TARGET_BIG_SYM bfd_elf64_hppa_vec | |
2702 | #define TARGET_BIG_NAME "elf64-hppa" | |
2703 | #define ELF_ARCH bfd_arch_hppa | |
2704 | #define ELF_MACHINE_CODE EM_PARISC | |
2705 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
2706 | 64M. But everything still uses 4k. */ | |
2707 | #define ELF_MAXPAGESIZE 0x1000 | |
2708 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
2709 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name | |
2710 | #define elf_info_to_howto elf_hppa_info_to_howto | |
2711 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
2712 | ||
2713 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
2714 | #define elf_backend_object_p elf64_hppa_object_p | |
2715 | #define elf_backend_final_write_processing \ | |
2716 | elf_hppa_final_write_processing | |
99c79b2e | 2717 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
2718 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
2719 | ||
f0fe0e16 | 2720 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
2721 | |
2722 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
2723 | ||
2724 | #define elf_backend_create_dynamic_sections \ | |
2725 | elf64_hppa_create_dynamic_sections | |
2726 | #define elf_backend_post_process_headers elf64_hppa_post_process_headers | |
2727 | ||
2728 | #define elf_backend_adjust_dynamic_symbol \ | |
2729 | elf64_hppa_adjust_dynamic_symbol | |
2730 | ||
2731 | #define elf_backend_size_dynamic_sections \ | |
2732 | elf64_hppa_size_dynamic_sections | |
2733 | ||
2734 | #define elf_backend_finish_dynamic_symbol \ | |
2735 | elf64_hppa_finish_dynamic_symbol | |
2736 | #define elf_backend_finish_dynamic_sections \ | |
2737 | elf64_hppa_finish_dynamic_sections | |
2738 | ||
2739 | /* Stuff for the BFD linker: */ | |
2740 | #define bfd_elf64_bfd_link_hash_table_create \ | |
2741 | elf64_hppa_hash_table_create | |
2742 | ||
2743 | #define elf_backend_check_relocs \ | |
2744 | elf64_hppa_check_relocs | |
2745 | ||
2746 | #define elf_backend_size_info \ | |
2747 | hppa64_elf_size_info | |
2748 | ||
2749 | #define elf_backend_additional_program_headers \ | |
2750 | elf64_hppa_additional_program_headers | |
2751 | ||
2752 | #define elf_backend_modify_segment_map \ | |
2753 | elf64_hppa_modify_segment_map | |
2754 | ||
2755 | #define elf_backend_link_output_symbol_hook \ | |
2756 | elf64_hppa_link_output_symbol_hook | |
2757 | ||
15bda425 JL |
2758 | #define elf_backend_want_got_plt 0 |
2759 | #define elf_backend_plt_readonly 0 | |
2760 | #define elf_backend_want_plt_sym 0 | |
2761 | #define elf_backend_got_header_size 0 | |
2762 | #define elf_backend_plt_header_size 0 | |
b34976b6 AM |
2763 | #define elf_backend_type_change_ok TRUE |
2764 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
2765 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
2766 | #define elf_backend_rela_normal 1 | |
15bda425 JL |
2767 | |
2768 | #include "elf64-target.h" | |
d952f17a AM |
2769 | |
2770 | #undef TARGET_BIG_SYM | |
2771 | #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec | |
2772 | #undef TARGET_BIG_NAME | |
2773 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
2774 | ||
2775 | #define INCLUDED_TARGET_FILE 1 | |
2776 | #include "elf64-target.h" |