Commit | Line | Data |
---|---|---|
b352eebf | 1 | /* Support for HPPA 64-bit ELF |
157090f7 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
5a580b3a | 3 | Free Software Foundation, Inc. |
15bda425 | 4 | |
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
15bda425 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
15bda425 | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
15bda425 | 16 | |
ae9a127f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
15bda425 | 20 | |
3ef20aaa | 21 | #include "alloca-conf.h" |
15bda425 JL |
22 | #include "bfd.h" |
23 | #include "sysdep.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/hppa.h" | |
27 | #include "libhppa.h" | |
28 | #include "elf64-hppa.h" | |
29 | #define ARCH_SIZE 64 | |
30 | ||
31 | #define PLT_ENTRY_SIZE 0x10 | |
32 | #define DLT_ENTRY_SIZE 0x8 | |
33 | #define OPD_ENTRY_SIZE 0x20 | |
fe8bc63d | 34 | |
15bda425 JL |
35 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
36 | ||
37 | /* The stub is supposed to load the target address and target's DP | |
38 | value out of the PLT, then do an external branch to the target | |
39 | address. | |
40 | ||
41 | LDD PLTOFF(%r27),%r1 | |
42 | BVE (%r1) | |
43 | LDD PLTOFF+8(%r27),%r27 | |
44 | ||
45 | Note that we must use the LDD with a 14 bit displacement, not the one | |
46 | with a 5 bit displacement. */ | |
47 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, | |
48 | 0x53, 0x7b, 0x00, 0x00 }; | |
49 | ||
50 | struct elf64_hppa_dyn_hash_entry | |
51 | { | |
52 | struct bfd_hash_entry root; | |
53 | ||
54 | /* Offsets for this symbol in various linker sections. */ | |
55 | bfd_vma dlt_offset; | |
56 | bfd_vma plt_offset; | |
57 | bfd_vma opd_offset; | |
58 | bfd_vma stub_offset; | |
59 | ||
edd21aca | 60 | /* The symbol table entry, if any, that this was derived from. */ |
15bda425 JL |
61 | struct elf_link_hash_entry *h; |
62 | ||
63 | /* The index of the (possibly local) symbol in the input bfd and its | |
64 | associated BFD. Needed so that we can have relocs against local | |
65 | symbols in shared libraries. */ | |
dc810e39 | 66 | long sym_indx; |
15bda425 JL |
67 | bfd *owner; |
68 | ||
69 | /* Dynamic symbols may need to have two different values. One for | |
70 | the dynamic symbol table, one for the normal symbol table. | |
71 | ||
72 | In such cases we store the symbol's real value and section | |
73 | index here so we can restore the real value before we write | |
74 | the normal symbol table. */ | |
75 | bfd_vma st_value; | |
76 | int st_shndx; | |
77 | ||
78 | /* Used to count non-got, non-plt relocations for delayed sizing | |
79 | of relocation sections. */ | |
80 | struct elf64_hppa_dyn_reloc_entry | |
81 | { | |
82 | /* Next relocation in the chain. */ | |
83 | struct elf64_hppa_dyn_reloc_entry *next; | |
84 | ||
85 | /* The type of the relocation. */ | |
86 | int type; | |
87 | ||
88 | /* The input section of the relocation. */ | |
89 | asection *sec; | |
90 | ||
91 | /* The index of the section symbol for the input section of | |
92 | the relocation. Only needed when building shared libraries. */ | |
93 | int sec_symndx; | |
94 | ||
95 | /* The offset within the input section of the relocation. */ | |
96 | bfd_vma offset; | |
97 | ||
98 | /* The addend for the relocation. */ | |
99 | bfd_vma addend; | |
100 | ||
101 | } *reloc_entries; | |
102 | ||
103 | /* Nonzero if this symbol needs an entry in one of the linker | |
104 | sections. */ | |
105 | unsigned want_dlt; | |
106 | unsigned want_plt; | |
107 | unsigned want_opd; | |
108 | unsigned want_stub; | |
109 | }; | |
110 | ||
111 | struct elf64_hppa_dyn_hash_table | |
112 | { | |
113 | struct bfd_hash_table root; | |
114 | }; | |
115 | ||
116 | struct elf64_hppa_link_hash_table | |
117 | { | |
118 | struct elf_link_hash_table root; | |
119 | ||
120 | /* Shortcuts to get to the various linker defined sections. */ | |
121 | asection *dlt_sec; | |
122 | asection *dlt_rel_sec; | |
123 | asection *plt_sec; | |
124 | asection *plt_rel_sec; | |
125 | asection *opd_sec; | |
126 | asection *opd_rel_sec; | |
127 | asection *other_rel_sec; | |
128 | ||
129 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
130 | to slide __gp into the PLT section so that we can continue to use | |
131 | single DP relative instructions to load values out of the PLT. */ | |
132 | bfd_vma gp_offset; | |
133 | ||
134 | /* Note this is not strictly correct. We should create a stub section for | |
135 | each input section with calls. The stub section should be placed before | |
136 | the section with the call. */ | |
137 | asection *stub_sec; | |
138 | ||
139 | bfd_vma text_segment_base; | |
140 | bfd_vma data_segment_base; | |
141 | ||
142 | struct elf64_hppa_dyn_hash_table dyn_hash_table; | |
143 | ||
144 | /* We build tables to map from an input section back to its | |
145 | symbol index. This is the BFD for which we currently have | |
146 | a map. */ | |
147 | bfd *section_syms_bfd; | |
148 | ||
149 | /* Array of symbol numbers for each input section attached to the | |
150 | current BFD. */ | |
151 | int *section_syms; | |
152 | }; | |
153 | ||
154 | #define elf64_hppa_hash_table(p) \ | |
155 | ((struct elf64_hppa_link_hash_table *) ((p)->hash)) | |
156 | ||
157 | typedef struct bfd_hash_entry *(*new_hash_entry_func) | |
158 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
159 | ||
15bda425 JL |
160 | static struct bfd_hash_entry *elf64_hppa_new_dyn_hash_entry |
161 | PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table, | |
162 | const char *string)); | |
163 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create | |
164 | PARAMS ((bfd *abfd)); | |
165 | static struct elf64_hppa_dyn_hash_entry *elf64_hppa_dyn_hash_lookup | |
166 | PARAMS ((struct elf64_hppa_dyn_hash_table *table, const char *string, | |
b34976b6 | 167 | bfd_boolean create, bfd_boolean copy)); |
15bda425 JL |
168 | static void elf64_hppa_dyn_hash_traverse |
169 | PARAMS ((struct elf64_hppa_dyn_hash_table *table, | |
b34976b6 | 170 | bfd_boolean (*func) (struct elf64_hppa_dyn_hash_entry *, PTR), |
15bda425 JL |
171 | PTR info)); |
172 | ||
173 | static const char *get_dyn_name | |
d63b5ed9 | 174 | PARAMS ((bfd *, struct elf_link_hash_entry *, |
0ba2a60e | 175 | const Elf_Internal_Rela *, char **, size_t *)); |
15bda425 | 176 | |
15bda425 JL |
177 | /* This must follow the definitions of the various derived linker |
178 | hash tables and shared functions. */ | |
179 | #include "elf-hppa.h" | |
180 | ||
b34976b6 | 181 | static bfd_boolean elf64_hppa_object_p |
15bda425 JL |
182 | PARAMS ((bfd *)); |
183 | ||
15bda425 JL |
184 | static void elf64_hppa_post_process_headers |
185 | PARAMS ((bfd *, struct bfd_link_info *)); | |
186 | ||
b34976b6 | 187 | static bfd_boolean elf64_hppa_create_dynamic_sections |
15bda425 JL |
188 | PARAMS ((bfd *, struct bfd_link_info *)); |
189 | ||
b34976b6 | 190 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
15bda425 JL |
191 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
192 | ||
b34976b6 | 193 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
47b7c2db AM |
194 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
195 | ||
b34976b6 | 196 | static bfd_boolean elf64_hppa_size_dynamic_sections |
15bda425 JL |
197 | PARAMS ((bfd *, struct bfd_link_info *)); |
198 | ||
b34976b6 | 199 | static bfd_boolean elf64_hppa_link_output_symbol_hook |
754021d0 AM |
200 | PARAMS ((struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
201 | asection *, struct elf_link_hash_entry *)); | |
99c79b2e | 202 | |
b34976b6 | 203 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
15bda425 JL |
204 | PARAMS ((bfd *, struct bfd_link_info *, |
205 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
fe8bc63d | 206 | |
5ac81c74 JL |
207 | static enum elf_reloc_type_class elf64_hppa_reloc_type_class |
208 | PARAMS ((const Elf_Internal_Rela *)); | |
209 | ||
b34976b6 | 210 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
15bda425 JL |
211 | PARAMS ((bfd *, struct bfd_link_info *)); |
212 | ||
b34976b6 | 213 | static bfd_boolean elf64_hppa_check_relocs |
15bda425 JL |
214 | PARAMS ((bfd *, struct bfd_link_info *, |
215 | asection *, const Elf_Internal_Rela *)); | |
216 | ||
b34976b6 | 217 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
15bda425 JL |
218 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); |
219 | ||
b34976b6 | 220 | static bfd_boolean elf64_hppa_mark_exported_functions |
15bda425 JL |
221 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
222 | ||
b34976b6 | 223 | static bfd_boolean elf64_hppa_finalize_opd |
15bda425 JL |
224 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
225 | ||
b34976b6 | 226 | static bfd_boolean elf64_hppa_finalize_dlt |
15bda425 JL |
227 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
228 | ||
b34976b6 | 229 | static bfd_boolean allocate_global_data_dlt |
15bda425 JL |
230 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
231 | ||
b34976b6 | 232 | static bfd_boolean allocate_global_data_plt |
15bda425 JL |
233 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
234 | ||
b34976b6 | 235 | static bfd_boolean allocate_global_data_stub |
15bda425 JL |
236 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
237 | ||
b34976b6 | 238 | static bfd_boolean allocate_global_data_opd |
15bda425 JL |
239 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
240 | ||
b34976b6 | 241 | static bfd_boolean get_reloc_section |
15bda425 JL |
242 | PARAMS ((bfd *, struct elf64_hppa_link_hash_table *, asection *)); |
243 | ||
b34976b6 | 244 | static bfd_boolean count_dyn_reloc |
15bda425 JL |
245 | PARAMS ((bfd *, struct elf64_hppa_dyn_hash_entry *, |
246 | int, asection *, int, bfd_vma, bfd_vma)); | |
247 | ||
b34976b6 | 248 | static bfd_boolean allocate_dynrel_entries |
15bda425 JL |
249 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
250 | ||
b34976b6 | 251 | static bfd_boolean elf64_hppa_finalize_dynreloc |
15bda425 JL |
252 | PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
253 | ||
b34976b6 | 254 | static bfd_boolean get_opd |
15bda425 JL |
255 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
256 | ||
b34976b6 | 257 | static bfd_boolean get_plt |
15bda425 JL |
258 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
259 | ||
b34976b6 | 260 | static bfd_boolean get_dlt |
15bda425 JL |
261 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
262 | ||
b34976b6 | 263 | static bfd_boolean get_stub |
15bda425 JL |
264 | PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *)); |
265 | ||
3fab46d0 AM |
266 | static int elf64_hppa_elf_get_symbol_type |
267 | PARAMS ((Elf_Internal_Sym *, int)); | |
268 | ||
b34976b6 | 269 | static bfd_boolean |
66eb6687 AM |
270 | elf64_hppa_dyn_hash_table_init (struct elf64_hppa_dyn_hash_table *ht, |
271 | bfd *abfd ATTRIBUTE_UNUSED, | |
272 | new_hash_entry_func new, | |
273 | unsigned int entsize) | |
15bda425 | 274 | { |
fe8bc63d | 275 | memset (ht, 0, sizeof (*ht)); |
66eb6687 | 276 | return bfd_hash_table_init (&ht->root, new, entsize); |
15bda425 JL |
277 | } |
278 | ||
279 | static struct bfd_hash_entry* | |
280 | elf64_hppa_new_dyn_hash_entry (entry, table, string) | |
281 | struct bfd_hash_entry *entry; | |
282 | struct bfd_hash_table *table; | |
283 | const char *string; | |
284 | { | |
285 | struct elf64_hppa_dyn_hash_entry *ret; | |
286 | ret = (struct elf64_hppa_dyn_hash_entry *) entry; | |
287 | ||
288 | /* Allocate the structure if it has not already been allocated by a | |
289 | subclass. */ | |
290 | if (!ret) | |
291 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
292 | ||
293 | if (!ret) | |
294 | return 0; | |
295 | ||
15bda425 JL |
296 | /* Call the allocation method of the superclass. */ |
297 | ret = ((struct elf64_hppa_dyn_hash_entry *) | |
298 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
299 | ||
336549c1 AM |
300 | /* Initialize our local data. All zeros. */ |
301 | memset (&ret->dlt_offset, 0, | |
302 | (sizeof (struct elf64_hppa_dyn_hash_entry) | |
303 | - offsetof (struct elf64_hppa_dyn_hash_entry, dlt_offset))); | |
304 | ||
15bda425 JL |
305 | return &ret->root; |
306 | } | |
307 | ||
308 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
309 | derived hash table to keep information specific to the PA ElF | |
310 | linker (without using static variables). */ | |
311 | ||
312 | static struct bfd_link_hash_table* | |
313 | elf64_hppa_hash_table_create (abfd) | |
314 | bfd *abfd; | |
315 | { | |
316 | struct elf64_hppa_link_hash_table *ret; | |
317 | ||
dc810e39 | 318 | ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret)); |
15bda425 JL |
319 | if (!ret) |
320 | return 0; | |
321 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
66eb6687 AM |
322 | _bfd_elf_link_hash_newfunc, |
323 | sizeof (struct elf_link_hash_entry))) | |
15bda425 JL |
324 | { |
325 | bfd_release (abfd, ret); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd, | |
66eb6687 AM |
330 | elf64_hppa_new_dyn_hash_entry, |
331 | sizeof (struct elf64_hppa_dyn_hash_entry))) | |
15bda425 JL |
332 | return 0; |
333 | return &ret->root.root; | |
334 | } | |
335 | ||
336 | /* Look up an entry in a PA64 ELF linker hash table. */ | |
337 | ||
338 | static struct elf64_hppa_dyn_hash_entry * | |
339 | elf64_hppa_dyn_hash_lookup(table, string, create, copy) | |
340 | struct elf64_hppa_dyn_hash_table *table; | |
341 | const char *string; | |
b34976b6 | 342 | bfd_boolean create, copy; |
15bda425 JL |
343 | { |
344 | return ((struct elf64_hppa_dyn_hash_entry *) | |
345 | bfd_hash_lookup (&table->root, string, create, copy)); | |
346 | } | |
347 | ||
348 | /* Traverse a PA64 ELF linker hash table. */ | |
349 | ||
350 | static void | |
351 | elf64_hppa_dyn_hash_traverse (table, func, info) | |
352 | struct elf64_hppa_dyn_hash_table *table; | |
b34976b6 | 353 | bfd_boolean (*func) PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR)); |
15bda425 JL |
354 | PTR info; |
355 | { | |
356 | (bfd_hash_traverse | |
357 | (&table->root, | |
b34976b6 | 358 | (bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) func, |
15bda425 JL |
359 | info)); |
360 | } | |
361 | \f | |
362 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. | |
363 | ||
364 | Additionally we set the default architecture and machine. */ | |
b34976b6 | 365 | static bfd_boolean |
15bda425 JL |
366 | elf64_hppa_object_p (abfd) |
367 | bfd *abfd; | |
368 | { | |
24a5e751 L |
369 | Elf_Internal_Ehdr * i_ehdrp; |
370 | unsigned int flags; | |
d9634ba1 | 371 | |
24a5e751 L |
372 | i_ehdrp = elf_elfheader (abfd); |
373 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) | |
374 | { | |
6c21aa76 NC |
375 | /* GCC on hppa-linux produces binaries with OSABI=Linux, |
376 | but the kernel produces corefiles with OSABI=SysV. */ | |
d97a8924 DA |
377 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX |
378 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 379 | return FALSE; |
24a5e751 L |
380 | } |
381 | else | |
382 | { | |
d97a8924 DA |
383 | /* HPUX produces binaries with OSABI=HPUX, |
384 | but the kernel produces corefiles with OSABI=SysV. */ | |
385 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX | |
386 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 387 | return FALSE; |
24a5e751 L |
388 | } |
389 | ||
390 | flags = i_ehdrp->e_flags; | |
d9634ba1 AM |
391 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
392 | { | |
393 | case EFA_PARISC_1_0: | |
394 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
395 | case EFA_PARISC_1_1: | |
396 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
397 | case EFA_PARISC_2_0: | |
d97a8924 DA |
398 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) |
399 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
400 | else | |
401 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
d9634ba1 AM |
402 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: |
403 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
404 | } | |
405 | /* Don't be fussy. */ | |
b34976b6 | 406 | return TRUE; |
15bda425 JL |
407 | } |
408 | ||
409 | /* Given section type (hdr->sh_type), return a boolean indicating | |
410 | whether or not the section is an elf64-hppa specific section. */ | |
b34976b6 | 411 | static bfd_boolean |
6dc132d9 L |
412 | elf64_hppa_section_from_shdr (bfd *abfd, |
413 | Elf_Internal_Shdr *hdr, | |
414 | const char *name, | |
415 | int shindex) | |
15bda425 JL |
416 | { |
417 | asection *newsect; | |
418 | ||
419 | switch (hdr->sh_type) | |
420 | { | |
421 | case SHT_PARISC_EXT: | |
422 | if (strcmp (name, ".PARISC.archext") != 0) | |
b34976b6 | 423 | return FALSE; |
15bda425 JL |
424 | break; |
425 | case SHT_PARISC_UNWIND: | |
426 | if (strcmp (name, ".PARISC.unwind") != 0) | |
b34976b6 | 427 | return FALSE; |
15bda425 JL |
428 | break; |
429 | case SHT_PARISC_DOC: | |
430 | case SHT_PARISC_ANNOT: | |
431 | default: | |
b34976b6 | 432 | return FALSE; |
15bda425 JL |
433 | } |
434 | ||
6dc132d9 | 435 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 436 | return FALSE; |
15bda425 JL |
437 | newsect = hdr->bfd_section; |
438 | ||
b34976b6 | 439 | return TRUE; |
15bda425 JL |
440 | } |
441 | ||
15bda425 | 442 | /* Construct a string for use in the elf64_hppa_dyn_hash_table. The |
fe8bc63d | 443 | name describes what was once potentially anonymous memory. We |
15bda425 JL |
444 | allocate memory as necessary, possibly reusing PBUF/PLEN. */ |
445 | ||
446 | static const char * | |
d63b5ed9 DA |
447 | get_dyn_name (abfd, h, rel, pbuf, plen) |
448 | bfd *abfd; | |
15bda425 JL |
449 | struct elf_link_hash_entry *h; |
450 | const Elf_Internal_Rela *rel; | |
451 | char **pbuf; | |
452 | size_t *plen; | |
453 | { | |
d63b5ed9 | 454 | asection *sec = abfd->sections; |
15bda425 JL |
455 | size_t nlen, tlen; |
456 | char *buf; | |
457 | size_t len; | |
458 | ||
459 | if (h && rel->r_addend == 0) | |
460 | return h->root.root.string; | |
461 | ||
462 | if (h) | |
463 | nlen = strlen (h->root.root.string); | |
464 | else | |
0ba2a60e AM |
465 | nlen = 8 + 1 + sizeof (rel->r_info) * 2 - 8; |
466 | tlen = nlen + 1 + sizeof (rel->r_addend) * 2 + 1; | |
15bda425 JL |
467 | |
468 | len = *plen; | |
469 | buf = *pbuf; | |
470 | if (len < tlen) | |
471 | { | |
472 | if (buf) | |
473 | free (buf); | |
474 | *pbuf = buf = malloc (tlen); | |
475 | *plen = len = tlen; | |
476 | if (!buf) | |
477 | return NULL; | |
478 | } | |
479 | ||
480 | if (h) | |
481 | { | |
482 | memcpy (buf, h->root.root.string, nlen); | |
0ba2a60e | 483 | buf[nlen++] = '+'; |
15bda425 JL |
484 | sprintf_vma (buf + nlen, rel->r_addend); |
485 | } | |
486 | else | |
487 | { | |
0ba2a60e AM |
488 | nlen = sprintf (buf, "%x:%lx", |
489 | sec->id & 0xffffffff, | |
490 | (long) ELF64_R_SYM (rel->r_info)); | |
15bda425 JL |
491 | if (rel->r_addend) |
492 | { | |
493 | buf[nlen++] = '+'; | |
494 | sprintf_vma (buf + nlen, rel->r_addend); | |
495 | } | |
496 | } | |
497 | ||
498 | return buf; | |
499 | } | |
500 | ||
501 | /* SEC is a section containing relocs for an input BFD when linking; return | |
502 | a suitable section for holding relocs in the output BFD for a link. */ | |
503 | ||
b34976b6 | 504 | static bfd_boolean |
15bda425 JL |
505 | get_reloc_section (abfd, hppa_info, sec) |
506 | bfd *abfd; | |
507 | struct elf64_hppa_link_hash_table *hppa_info; | |
508 | asection *sec; | |
509 | { | |
510 | const char *srel_name; | |
511 | asection *srel; | |
512 | bfd *dynobj; | |
513 | ||
514 | srel_name = (bfd_elf_string_from_elf_section | |
515 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
516 | elf_section_data(sec)->rel_hdr.sh_name)); | |
517 | if (srel_name == NULL) | |
b34976b6 | 518 | return FALSE; |
15bda425 | 519 | |
0112cd26 | 520 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") |
15bda425 | 521 | && strcmp (bfd_get_section_name (abfd, sec), |
0112cd26 NC |
522 | srel_name + 5) == 0) |
523 | || (CONST_STRNEQ (srel_name, ".rel") | |
15bda425 | 524 | && strcmp (bfd_get_section_name (abfd, sec), |
0112cd26 | 525 | srel_name + 4) == 0)); |
15bda425 JL |
526 | |
527 | dynobj = hppa_info->root.dynobj; | |
528 | if (!dynobj) | |
529 | hppa_info->root.dynobj = dynobj = abfd; | |
530 | ||
531 | srel = bfd_get_section_by_name (dynobj, srel_name); | |
532 | if (srel == NULL) | |
533 | { | |
3496cb2a L |
534 | srel = bfd_make_section_with_flags (dynobj, srel_name, |
535 | (SEC_ALLOC | |
536 | | SEC_LOAD | |
537 | | SEC_HAS_CONTENTS | |
538 | | SEC_IN_MEMORY | |
539 | | SEC_LINKER_CREATED | |
540 | | SEC_READONLY)); | |
15bda425 | 541 | if (srel == NULL |
15bda425 | 542 | || !bfd_set_section_alignment (dynobj, srel, 3)) |
b34976b6 | 543 | return FALSE; |
15bda425 JL |
544 | } |
545 | ||
546 | hppa_info->other_rel_sec = srel; | |
b34976b6 | 547 | return TRUE; |
15bda425 JL |
548 | } |
549 | ||
fe8bc63d | 550 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
15bda425 JL |
551 | |
552 | We use this to keep a record of all the FPTR relocations against a | |
553 | particular symbol so that we can create FPTR relocations in the | |
554 | output file. */ | |
555 | ||
b34976b6 | 556 | static bfd_boolean |
15bda425 JL |
557 | count_dyn_reloc (abfd, dyn_h, type, sec, sec_symndx, offset, addend) |
558 | bfd *abfd; | |
559 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
560 | int type; | |
561 | asection *sec; | |
562 | int sec_symndx; | |
563 | bfd_vma offset; | |
564 | bfd_vma addend; | |
565 | { | |
566 | struct elf64_hppa_dyn_reloc_entry *rent; | |
567 | ||
568 | rent = (struct elf64_hppa_dyn_reloc_entry *) | |
dc810e39 | 569 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
15bda425 | 570 | if (!rent) |
b34976b6 | 571 | return FALSE; |
15bda425 JL |
572 | |
573 | rent->next = dyn_h->reloc_entries; | |
574 | rent->type = type; | |
575 | rent->sec = sec; | |
576 | rent->sec_symndx = sec_symndx; | |
577 | rent->offset = offset; | |
578 | rent->addend = addend; | |
579 | dyn_h->reloc_entries = rent; | |
580 | ||
b34976b6 | 581 | return TRUE; |
15bda425 JL |
582 | } |
583 | ||
584 | /* Scan the RELOCS and record the type of dynamic entries that each | |
585 | referenced symbol needs. */ | |
586 | ||
b34976b6 | 587 | static bfd_boolean |
15bda425 JL |
588 | elf64_hppa_check_relocs (abfd, info, sec, relocs) |
589 | bfd *abfd; | |
590 | struct bfd_link_info *info; | |
591 | asection *sec; | |
592 | const Elf_Internal_Rela *relocs; | |
593 | { | |
594 | struct elf64_hppa_link_hash_table *hppa_info; | |
595 | const Elf_Internal_Rela *relend; | |
596 | Elf_Internal_Shdr *symtab_hdr; | |
597 | const Elf_Internal_Rela *rel; | |
598 | asection *dlt, *plt, *stubs; | |
599 | char *buf; | |
600 | size_t buf_len; | |
601 | int sec_symndx; | |
602 | ||
1049f94e | 603 | if (info->relocatable) |
b34976b6 | 604 | return TRUE; |
15bda425 JL |
605 | |
606 | /* If this is the first dynamic object found in the link, create | |
607 | the special sections required for dynamic linking. */ | |
608 | if (! elf_hash_table (info)->dynamic_sections_created) | |
609 | { | |
45d6a902 | 610 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
b34976b6 | 611 | return FALSE; |
15bda425 JL |
612 | } |
613 | ||
614 | hppa_info = elf64_hppa_hash_table (info); | |
615 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
616 | ||
617 | /* If necessary, build a new table holding section symbols indices | |
6cdc0ccc | 618 | for this BFD. */ |
fe8bc63d | 619 | |
15bda425 JL |
620 | if (info->shared && hppa_info->section_syms_bfd != abfd) |
621 | { | |
832d951b | 622 | unsigned long i; |
9ad5cbcf | 623 | unsigned int highest_shndx; |
6cdc0ccc AM |
624 | Elf_Internal_Sym *local_syms = NULL; |
625 | Elf_Internal_Sym *isym, *isymend; | |
dc810e39 | 626 | bfd_size_type amt; |
15bda425 JL |
627 | |
628 | /* We're done with the old cache of section index to section symbol | |
629 | index information. Free it. | |
630 | ||
631 | ?!? Note we leak the last section_syms array. Presumably we | |
632 | could free it in one of the later routines in this file. */ | |
633 | if (hppa_info->section_syms) | |
634 | free (hppa_info->section_syms); | |
635 | ||
6cdc0ccc AM |
636 | /* Read this BFD's local symbols. */ |
637 | if (symtab_hdr->sh_info != 0) | |
47b7c2db | 638 | { |
6cdc0ccc AM |
639 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
640 | if (local_syms == NULL) | |
641 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
642 | symtab_hdr->sh_info, 0, | |
643 | NULL, NULL, NULL); | |
644 | if (local_syms == NULL) | |
b34976b6 | 645 | return FALSE; |
9ad5cbcf AM |
646 | } |
647 | ||
6cdc0ccc | 648 | /* Record the highest section index referenced by the local symbols. */ |
15bda425 | 649 | highest_shndx = 0; |
6cdc0ccc AM |
650 | isymend = local_syms + symtab_hdr->sh_info; |
651 | for (isym = local_syms; isym < isymend; isym++) | |
15bda425 | 652 | { |
15bda425 JL |
653 | if (isym->st_shndx > highest_shndx) |
654 | highest_shndx = isym->st_shndx; | |
655 | } | |
656 | ||
15bda425 JL |
657 | /* Allocate an array to hold the section index to section symbol index |
658 | mapping. Bump by one since we start counting at zero. */ | |
659 | highest_shndx++; | |
dc810e39 AM |
660 | amt = highest_shndx; |
661 | amt *= sizeof (int); | |
662 | hppa_info->section_syms = (int *) bfd_malloc (amt); | |
15bda425 JL |
663 | |
664 | /* Now walk the local symbols again. If we find a section symbol, | |
665 | record the index of the symbol into the section_syms array. */ | |
6cdc0ccc | 666 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
15bda425 JL |
667 | { |
668 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
669 | hppa_info->section_syms[isym->st_shndx] = i; | |
670 | } | |
671 | ||
6cdc0ccc AM |
672 | /* We are finished with the local symbols. */ |
673 | if (local_syms != NULL | |
674 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
675 | { | |
676 | if (! info->keep_memory) | |
677 | free (local_syms); | |
678 | else | |
679 | { | |
680 | /* Cache the symbols for elf_link_input_bfd. */ | |
681 | symtab_hdr->contents = (unsigned char *) local_syms; | |
682 | } | |
683 | } | |
15bda425 JL |
684 | |
685 | /* Record which BFD we built the section_syms mapping for. */ | |
686 | hppa_info->section_syms_bfd = abfd; | |
687 | } | |
688 | ||
689 | /* Record the symbol index for this input section. We may need it for | |
690 | relocations when building shared libraries. When not building shared | |
691 | libraries this value is never really used, but assign it to zero to | |
692 | prevent out of bounds memory accesses in other routines. */ | |
693 | if (info->shared) | |
694 | { | |
695 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
696 | ||
697 | /* If we did not find a section symbol for this section, then | |
698 | something went terribly wrong above. */ | |
699 | if (sec_symndx == -1) | |
b34976b6 | 700 | return FALSE; |
15bda425 JL |
701 | |
702 | sec_symndx = hppa_info->section_syms[sec_symndx]; | |
703 | } | |
704 | else | |
705 | sec_symndx = 0; | |
fe8bc63d | 706 | |
15bda425 JL |
707 | dlt = plt = stubs = NULL; |
708 | buf = NULL; | |
709 | buf_len = 0; | |
710 | ||
711 | relend = relocs + sec->reloc_count; | |
712 | for (rel = relocs; rel < relend; ++rel) | |
713 | { | |
560e09e9 NC |
714 | enum |
715 | { | |
716 | NEED_DLT = 1, | |
717 | NEED_PLT = 2, | |
718 | NEED_STUB = 4, | |
719 | NEED_OPD = 8, | |
720 | NEED_DYNREL = 16, | |
721 | }; | |
15bda425 JL |
722 | |
723 | struct elf_link_hash_entry *h = NULL; | |
724 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
725 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
726 | int need_entry; | |
727 | const char *addr_name; | |
b34976b6 | 728 | bfd_boolean maybe_dynamic; |
15bda425 JL |
729 | int dynrel_type = R_PARISC_NONE; |
730 | static reloc_howto_type *howto; | |
731 | ||
732 | if (r_symndx >= symtab_hdr->sh_info) | |
733 | { | |
734 | /* We're dealing with a global symbol -- find its hash entry | |
735 | and mark it as being referenced. */ | |
736 | long indx = r_symndx - symtab_hdr->sh_info; | |
737 | h = elf_sym_hashes (abfd)[indx]; | |
738 | while (h->root.type == bfd_link_hash_indirect | |
739 | || h->root.type == bfd_link_hash_warning) | |
740 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
741 | ||
f5385ebf | 742 | h->ref_regular = 1; |
15bda425 JL |
743 | } |
744 | ||
745 | /* We can only get preliminary data on whether a symbol is | |
746 | locally or externally defined, as not all of the input files | |
747 | have yet been processed. Do something with what we know, as | |
748 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 749 | maybe_dynamic = FALSE; |
671bae9c | 750 | if (h && ((info->shared |
f5385ebf AM |
751 | && (!info->symbolic |
752 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
753 | || !h->def_regular | |
15bda425 | 754 | || h->root.type == bfd_link_hash_defweak)) |
b34976b6 | 755 | maybe_dynamic = TRUE; |
15bda425 JL |
756 | |
757 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); | |
758 | need_entry = 0; | |
759 | switch (howto->type) | |
760 | { | |
761 | /* These are simple indirect references to symbols through the | |
762 | DLT. We need to create a DLT entry for any symbols which | |
763 | appears in a DLTIND relocation. */ | |
764 | case R_PARISC_DLTIND21L: | |
765 | case R_PARISC_DLTIND14R: | |
766 | case R_PARISC_DLTIND14F: | |
767 | case R_PARISC_DLTIND14WR: | |
768 | case R_PARISC_DLTIND14DR: | |
769 | need_entry = NEED_DLT; | |
770 | break; | |
771 | ||
772 | /* ?!? These need a DLT entry. But I have no idea what to do with | |
773 | the "link time TP value. */ | |
774 | case R_PARISC_LTOFF_TP21L: | |
775 | case R_PARISC_LTOFF_TP14R: | |
776 | case R_PARISC_LTOFF_TP14F: | |
777 | case R_PARISC_LTOFF_TP64: | |
778 | case R_PARISC_LTOFF_TP14WR: | |
779 | case R_PARISC_LTOFF_TP14DR: | |
780 | case R_PARISC_LTOFF_TP16F: | |
781 | case R_PARISC_LTOFF_TP16WF: | |
782 | case R_PARISC_LTOFF_TP16DF: | |
783 | need_entry = NEED_DLT; | |
784 | break; | |
785 | ||
786 | /* These are function calls. Depending on their precise target we | |
787 | may need to make a stub for them. The stub uses the PLT, so we | |
788 | need to create PLT entries for these symbols too. */ | |
832d951b | 789 | case R_PARISC_PCREL12F: |
15bda425 JL |
790 | case R_PARISC_PCREL17F: |
791 | case R_PARISC_PCREL22F: | |
792 | case R_PARISC_PCREL32: | |
793 | case R_PARISC_PCREL64: | |
794 | case R_PARISC_PCREL21L: | |
795 | case R_PARISC_PCREL17R: | |
796 | case R_PARISC_PCREL17C: | |
797 | case R_PARISC_PCREL14R: | |
798 | case R_PARISC_PCREL14F: | |
799 | case R_PARISC_PCREL22C: | |
800 | case R_PARISC_PCREL14WR: | |
801 | case R_PARISC_PCREL14DR: | |
802 | case R_PARISC_PCREL16F: | |
803 | case R_PARISC_PCREL16WF: | |
804 | case R_PARISC_PCREL16DF: | |
805 | need_entry = (NEED_PLT | NEED_STUB); | |
806 | break; | |
807 | ||
808 | case R_PARISC_PLTOFF21L: | |
809 | case R_PARISC_PLTOFF14R: | |
810 | case R_PARISC_PLTOFF14F: | |
811 | case R_PARISC_PLTOFF14WR: | |
812 | case R_PARISC_PLTOFF14DR: | |
813 | case R_PARISC_PLTOFF16F: | |
814 | case R_PARISC_PLTOFF16WF: | |
815 | case R_PARISC_PLTOFF16DF: | |
816 | need_entry = (NEED_PLT); | |
817 | break; | |
818 | ||
819 | case R_PARISC_DIR64: | |
820 | if (info->shared || maybe_dynamic) | |
821 | need_entry = (NEED_DYNREL); | |
822 | dynrel_type = R_PARISC_DIR64; | |
823 | break; | |
824 | ||
825 | /* This is an indirect reference through the DLT to get the address | |
826 | of a OPD descriptor. Thus we need to make a DLT entry that points | |
827 | to an OPD entry. */ | |
828 | case R_PARISC_LTOFF_FPTR21L: | |
829 | case R_PARISC_LTOFF_FPTR14R: | |
830 | case R_PARISC_LTOFF_FPTR14WR: | |
831 | case R_PARISC_LTOFF_FPTR14DR: | |
832 | case R_PARISC_LTOFF_FPTR32: | |
833 | case R_PARISC_LTOFF_FPTR64: | |
834 | case R_PARISC_LTOFF_FPTR16F: | |
835 | case R_PARISC_LTOFF_FPTR16WF: | |
836 | case R_PARISC_LTOFF_FPTR16DF: | |
837 | if (info->shared || maybe_dynamic) | |
838 | need_entry = (NEED_DLT | NEED_OPD); | |
839 | else | |
840 | need_entry = (NEED_DLT | NEED_OPD); | |
841 | dynrel_type = R_PARISC_FPTR64; | |
842 | break; | |
843 | ||
844 | /* This is a simple OPD entry. */ | |
845 | case R_PARISC_FPTR64: | |
846 | if (info->shared || maybe_dynamic) | |
847 | need_entry = (NEED_OPD | NEED_DYNREL); | |
848 | else | |
849 | need_entry = (NEED_OPD); | |
850 | dynrel_type = R_PARISC_FPTR64; | |
851 | break; | |
852 | ||
853 | /* Add more cases as needed. */ | |
854 | } | |
855 | ||
856 | if (!need_entry) | |
857 | continue; | |
858 | ||
859 | /* Collect a canonical name for this address. */ | |
d63b5ed9 | 860 | addr_name = get_dyn_name (abfd, h, rel, &buf, &buf_len); |
15bda425 JL |
861 | |
862 | /* Collect the canonical entry data for this address. */ | |
863 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 864 | addr_name, TRUE, TRUE); |
15bda425 JL |
865 | BFD_ASSERT (dyn_h); |
866 | ||
867 | /* Stash away enough information to be able to find this symbol | |
868 | regardless of whether or not it is local or global. */ | |
869 | dyn_h->h = h; | |
870 | dyn_h->owner = abfd; | |
871 | dyn_h->sym_indx = r_symndx; | |
872 | ||
873 | /* ?!? We may need to do some error checking in here. */ | |
874 | /* Create what's needed. */ | |
875 | if (need_entry & NEED_DLT) | |
876 | { | |
877 | if (! hppa_info->dlt_sec | |
878 | && ! get_dlt (abfd, info, hppa_info)) | |
879 | goto err_out; | |
880 | dyn_h->want_dlt = 1; | |
881 | } | |
882 | ||
883 | if (need_entry & NEED_PLT) | |
884 | { | |
885 | if (! hppa_info->plt_sec | |
886 | && ! get_plt (abfd, info, hppa_info)) | |
887 | goto err_out; | |
888 | dyn_h->want_plt = 1; | |
889 | } | |
890 | ||
891 | if (need_entry & NEED_STUB) | |
892 | { | |
893 | if (! hppa_info->stub_sec | |
894 | && ! get_stub (abfd, info, hppa_info)) | |
895 | goto err_out; | |
896 | dyn_h->want_stub = 1; | |
897 | } | |
898 | ||
899 | if (need_entry & NEED_OPD) | |
900 | { | |
901 | if (! hppa_info->opd_sec | |
902 | && ! get_opd (abfd, info, hppa_info)) | |
903 | goto err_out; | |
904 | ||
905 | dyn_h->want_opd = 1; | |
906 | ||
907 | /* FPTRs are not allocated by the dynamic linker for PA64, though | |
908 | it is possible that will change in the future. */ | |
fe8bc63d | 909 | |
15bda425 JL |
910 | /* This could be a local function that had its address taken, in |
911 | which case H will be NULL. */ | |
912 | if (h) | |
f5385ebf | 913 | h->needs_plt = 1; |
15bda425 JL |
914 | } |
915 | ||
916 | /* Add a new dynamic relocation to the chain of dynamic | |
917 | relocations for this symbol. */ | |
918 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
919 | { | |
920 | if (! hppa_info->other_rel_sec | |
921 | && ! get_reloc_section (abfd, hppa_info, sec)) | |
922 | goto err_out; | |
923 | ||
924 | if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec, | |
925 | sec_symndx, rel->r_offset, rel->r_addend)) | |
926 | goto err_out; | |
927 | ||
928 | /* If we are building a shared library and we just recorded | |
929 | a dynamic R_PARISC_FPTR64 relocation, then make sure the | |
930 | section symbol for this section ends up in the dynamic | |
931 | symbol table. */ | |
932 | if (info->shared && dynrel_type == R_PARISC_FPTR64 | |
c152c796 | 933 | && ! (bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 934 | (info, abfd, sec_symndx))) |
b34976b6 | 935 | return FALSE; |
15bda425 JL |
936 | } |
937 | } | |
938 | ||
939 | if (buf) | |
940 | free (buf); | |
b34976b6 | 941 | return TRUE; |
15bda425 JL |
942 | |
943 | err_out: | |
944 | if (buf) | |
945 | free (buf); | |
b34976b6 | 946 | return FALSE; |
15bda425 JL |
947 | } |
948 | ||
949 | struct elf64_hppa_allocate_data | |
950 | { | |
951 | struct bfd_link_info *info; | |
952 | bfd_size_type ofs; | |
953 | }; | |
954 | ||
955 | /* Should we do dynamic things to this symbol? */ | |
956 | ||
b34976b6 | 957 | static bfd_boolean |
15bda425 JL |
958 | elf64_hppa_dynamic_symbol_p (h, info) |
959 | struct elf_link_hash_entry *h; | |
960 | struct bfd_link_info *info; | |
961 | { | |
986a241f RH |
962 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
963 | and relocations that retrieve a function descriptor? Assume the | |
964 | worst for now. */ | |
965 | if (_bfd_elf_dynamic_symbol_p (h, info, 1)) | |
966 | { | |
967 | /* ??? Why is this here and not elsewhere is_local_label_name. */ | |
968 | if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$') | |
969 | return FALSE; | |
15bda425 | 970 | |
986a241f RH |
971 | return TRUE; |
972 | } | |
973 | else | |
b34976b6 | 974 | return FALSE; |
15bda425 JL |
975 | } |
976 | ||
4cc11e76 | 977 | /* Mark all functions exported by this file so that we can later allocate |
15bda425 JL |
978 | entries in .opd for them. */ |
979 | ||
b34976b6 | 980 | static bfd_boolean |
15bda425 JL |
981 | elf64_hppa_mark_exported_functions (h, data) |
982 | struct elf_link_hash_entry *h; | |
983 | PTR data; | |
984 | { | |
985 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
986 | struct elf64_hppa_link_hash_table *hppa_info; | |
987 | ||
988 | hppa_info = elf64_hppa_hash_table (info); | |
989 | ||
e92d460e AM |
990 | if (h->root.type == bfd_link_hash_warning) |
991 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
992 | ||
15bda425 JL |
993 | if (h |
994 | && (h->root.type == bfd_link_hash_defined | |
995 | || h->root.type == bfd_link_hash_defweak) | |
996 | && h->root.u.def.section->output_section != NULL | |
997 | && h->type == STT_FUNC) | |
998 | { | |
999 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1000 | ||
1001 | /* Add this symbol to the PA64 linker hash table. */ | |
1002 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1003 | h->root.root.string, TRUE, TRUE); |
15bda425 JL |
1004 | BFD_ASSERT (dyn_h); |
1005 | dyn_h->h = h; | |
1006 | ||
1007 | if (! hppa_info->opd_sec | |
1008 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) | |
b34976b6 | 1009 | return FALSE; |
15bda425 JL |
1010 | |
1011 | dyn_h->want_opd = 1; | |
832d951b AM |
1012 | /* Put a flag here for output_symbol_hook. */ |
1013 | dyn_h->st_shndx = -1; | |
f5385ebf | 1014 | h->needs_plt = 1; |
15bda425 JL |
1015 | } |
1016 | ||
b34976b6 | 1017 | return TRUE; |
15bda425 JL |
1018 | } |
1019 | ||
1020 | /* Allocate space for a DLT entry. */ | |
1021 | ||
b34976b6 | 1022 | static bfd_boolean |
15bda425 JL |
1023 | allocate_global_data_dlt (dyn_h, data) |
1024 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1025 | PTR data; | |
1026 | { | |
1027 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1028 | ||
1029 | if (dyn_h->want_dlt) | |
1030 | { | |
1031 | struct elf_link_hash_entry *h = dyn_h->h; | |
1032 | ||
1033 | if (x->info->shared) | |
1034 | { | |
1035 | /* Possibly add the symbol to the local dynamic symbol | |
1036 | table since we might need to create a dynamic relocation | |
1037 | against it. */ | |
1038 | if (! h | |
47b7c2db | 1039 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)) |
15bda425 JL |
1040 | { |
1041 | bfd *owner; | |
1042 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1043 | ||
c152c796 | 1044 | if (! (bfd_elf_link_record_local_dynamic_symbol |
dc810e39 | 1045 | (x->info, owner, dyn_h->sym_indx))) |
b34976b6 | 1046 | return FALSE; |
15bda425 JL |
1047 | } |
1048 | } | |
1049 | ||
1050 | dyn_h->dlt_offset = x->ofs; | |
1051 | x->ofs += DLT_ENTRY_SIZE; | |
1052 | } | |
b34976b6 | 1053 | return TRUE; |
15bda425 JL |
1054 | } |
1055 | ||
1056 | /* Allocate space for a DLT.PLT entry. */ | |
1057 | ||
b34976b6 | 1058 | static bfd_boolean |
15bda425 JL |
1059 | allocate_global_data_plt (dyn_h, data) |
1060 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1061 | PTR data; | |
1062 | { | |
1063 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1064 | ||
1065 | if (dyn_h->want_plt | |
1066 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1067 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1068 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1069 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1070 | { | |
1071 | dyn_h->plt_offset = x->ofs; | |
1072 | x->ofs += PLT_ENTRY_SIZE; | |
1073 | if (dyn_h->plt_offset < 0x2000) | |
1074 | elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset; | |
1075 | } | |
1076 | else | |
1077 | dyn_h->want_plt = 0; | |
1078 | ||
b34976b6 | 1079 | return TRUE; |
15bda425 JL |
1080 | } |
1081 | ||
1082 | /* Allocate space for a STUB entry. */ | |
1083 | ||
b34976b6 | 1084 | static bfd_boolean |
15bda425 JL |
1085 | allocate_global_data_stub (dyn_h, data) |
1086 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1087 | PTR data; | |
1088 | { | |
1089 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1090 | ||
1091 | if (dyn_h->want_stub | |
1092 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1093 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1094 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1095 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1096 | { | |
1097 | dyn_h->stub_offset = x->ofs; | |
1098 | x->ofs += sizeof (plt_stub); | |
1099 | } | |
1100 | else | |
1101 | dyn_h->want_stub = 0; | |
b34976b6 | 1102 | return TRUE; |
15bda425 JL |
1103 | } |
1104 | ||
1105 | /* Allocate space for a FPTR entry. */ | |
1106 | ||
b34976b6 | 1107 | static bfd_boolean |
15bda425 JL |
1108 | allocate_global_data_opd (dyn_h, data) |
1109 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1110 | PTR data; | |
1111 | { | |
1112 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1113 | ||
1114 | if (dyn_h->want_opd) | |
1115 | { | |
1116 | struct elf_link_hash_entry *h = dyn_h->h; | |
fe8bc63d | 1117 | |
15bda425 JL |
1118 | if (h) |
1119 | while (h->root.type == bfd_link_hash_indirect | |
1120 | || h->root.type == bfd_link_hash_warning) | |
1121 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1122 | ||
1123 | /* We never need an opd entry for a symbol which is not | |
1124 | defined by this output file. */ | |
3db4b612 | 1125 | if (h && (h->root.type == bfd_link_hash_undefined |
af7cfa33 | 1126 | || h->root.type == bfd_link_hash_undefweak |
3db4b612 | 1127 | || h->root.u.def.section->output_section == NULL)) |
15bda425 JL |
1128 | dyn_h->want_opd = 0; |
1129 | ||
1130 | /* If we are creating a shared library, took the address of a local | |
1131 | function or might export this function from this object file, then | |
1132 | we have to create an opd descriptor. */ | |
1133 | else if (x->info->shared | |
1134 | || h == NULL | |
47b7c2db | 1135 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI) |
3db4b612 JL |
1136 | || (h->root.type == bfd_link_hash_defined |
1137 | || h->root.type == bfd_link_hash_defweak)) | |
15bda425 JL |
1138 | { |
1139 | /* If we are creating a shared library, then we will have to | |
1140 | create a runtime relocation for the symbol to properly | |
1141 | initialize the .opd entry. Make sure the symbol gets | |
1142 | added to the dynamic symbol table. */ | |
1143 | if (x->info->shared | |
1144 | && (h == NULL || (h->dynindx == -1))) | |
1145 | { | |
1146 | bfd *owner; | |
1147 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1148 | ||
c152c796 | 1149 | if (!bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 1150 | (x->info, owner, dyn_h->sym_indx)) |
b34976b6 | 1151 | return FALSE; |
15bda425 JL |
1152 | } |
1153 | ||
1154 | /* This may not be necessary or desirable anymore now that | |
1155 | we have some support for dealing with section symbols | |
1156 | in dynamic relocs. But name munging does make the result | |
1157 | much easier to debug. ie, the EPLT reloc will reference | |
1158 | a symbol like .foobar, instead of .text + offset. */ | |
1159 | if (x->info->shared && h) | |
1160 | { | |
1161 | char *new_name; | |
1162 | struct elf_link_hash_entry *nh; | |
1163 | ||
1164 | new_name = alloca (strlen (h->root.root.string) + 2); | |
1165 | new_name[0] = '.'; | |
1166 | strcpy (new_name + 1, h->root.root.string); | |
1167 | ||
1168 | nh = elf_link_hash_lookup (elf_hash_table (x->info), | |
b34976b6 | 1169 | new_name, TRUE, TRUE, TRUE); |
15bda425 JL |
1170 | |
1171 | nh->root.type = h->root.type; | |
1172 | nh->root.u.def.value = h->root.u.def.value; | |
1173 | nh->root.u.def.section = h->root.u.def.section; | |
1174 | ||
c152c796 | 1175 | if (! bfd_elf_link_record_dynamic_symbol (x->info, nh)) |
b34976b6 | 1176 | return FALSE; |
15bda425 JL |
1177 | |
1178 | } | |
1179 | dyn_h->opd_offset = x->ofs; | |
1180 | x->ofs += OPD_ENTRY_SIZE; | |
1181 | } | |
1182 | ||
1183 | /* Otherwise we do not need an opd entry. */ | |
1184 | else | |
1185 | dyn_h->want_opd = 0; | |
1186 | } | |
b34976b6 | 1187 | return TRUE; |
15bda425 JL |
1188 | } |
1189 | ||
1190 | /* HP requires the EI_OSABI field to be filled in. The assignment to | |
1191 | EI_ABIVERSION may not be strictly necessary. */ | |
1192 | ||
1193 | static void | |
1194 | elf64_hppa_post_process_headers (abfd, link_info) | |
1195 | bfd * abfd; | |
1196 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
1197 | { | |
1198 | Elf_Internal_Ehdr * i_ehdrp; | |
1199 | ||
1200 | i_ehdrp = elf_elfheader (abfd); | |
d1036acb L |
1201 | |
1202 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
1203 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
15bda425 JL |
1204 | } |
1205 | ||
1206 | /* Create function descriptor section (.opd). This section is called .opd | |
4cc11e76 | 1207 | because it contains "official procedure descriptors". The "official" |
15bda425 JL |
1208 | refers to the fact that these descriptors are used when taking the address |
1209 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1210 | ||
b34976b6 | 1211 | static bfd_boolean |
15bda425 JL |
1212 | get_opd (abfd, info, hppa_info) |
1213 | bfd *abfd; | |
edd21aca | 1214 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1215 | struct elf64_hppa_link_hash_table *hppa_info; |
1216 | { | |
1217 | asection *opd; | |
1218 | bfd *dynobj; | |
1219 | ||
1220 | opd = hppa_info->opd_sec; | |
1221 | if (!opd) | |
1222 | { | |
1223 | dynobj = hppa_info->root.dynobj; | |
1224 | if (!dynobj) | |
1225 | hppa_info->root.dynobj = dynobj = abfd; | |
1226 | ||
3496cb2a L |
1227 | opd = bfd_make_section_with_flags (dynobj, ".opd", |
1228 | (SEC_ALLOC | |
1229 | | SEC_LOAD | |
1230 | | SEC_HAS_CONTENTS | |
1231 | | SEC_IN_MEMORY | |
1232 | | SEC_LINKER_CREATED)); | |
15bda425 | 1233 | if (!opd |
15bda425 JL |
1234 | || !bfd_set_section_alignment (abfd, opd, 3)) |
1235 | { | |
1236 | BFD_ASSERT (0); | |
b34976b6 | 1237 | return FALSE; |
15bda425 JL |
1238 | } |
1239 | ||
1240 | hppa_info->opd_sec = opd; | |
1241 | } | |
1242 | ||
b34976b6 | 1243 | return TRUE; |
15bda425 JL |
1244 | } |
1245 | ||
1246 | /* Create the PLT section. */ | |
1247 | ||
b34976b6 | 1248 | static bfd_boolean |
15bda425 JL |
1249 | get_plt (abfd, info, hppa_info) |
1250 | bfd *abfd; | |
edd21aca | 1251 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1252 | struct elf64_hppa_link_hash_table *hppa_info; |
1253 | { | |
1254 | asection *plt; | |
1255 | bfd *dynobj; | |
1256 | ||
1257 | plt = hppa_info->plt_sec; | |
1258 | if (!plt) | |
1259 | { | |
1260 | dynobj = hppa_info->root.dynobj; | |
1261 | if (!dynobj) | |
1262 | hppa_info->root.dynobj = dynobj = abfd; | |
1263 | ||
3496cb2a L |
1264 | plt = bfd_make_section_with_flags (dynobj, ".plt", |
1265 | (SEC_ALLOC | |
1266 | | SEC_LOAD | |
1267 | | SEC_HAS_CONTENTS | |
1268 | | SEC_IN_MEMORY | |
1269 | | SEC_LINKER_CREATED)); | |
15bda425 | 1270 | if (!plt |
15bda425 JL |
1271 | || !bfd_set_section_alignment (abfd, plt, 3)) |
1272 | { | |
1273 | BFD_ASSERT (0); | |
b34976b6 | 1274 | return FALSE; |
15bda425 JL |
1275 | } |
1276 | ||
1277 | hppa_info->plt_sec = plt; | |
1278 | } | |
1279 | ||
b34976b6 | 1280 | return TRUE; |
15bda425 JL |
1281 | } |
1282 | ||
1283 | /* Create the DLT section. */ | |
1284 | ||
b34976b6 | 1285 | static bfd_boolean |
15bda425 JL |
1286 | get_dlt (abfd, info, hppa_info) |
1287 | bfd *abfd; | |
edd21aca | 1288 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1289 | struct elf64_hppa_link_hash_table *hppa_info; |
1290 | { | |
1291 | asection *dlt; | |
1292 | bfd *dynobj; | |
1293 | ||
1294 | dlt = hppa_info->dlt_sec; | |
1295 | if (!dlt) | |
1296 | { | |
1297 | dynobj = hppa_info->root.dynobj; | |
1298 | if (!dynobj) | |
1299 | hppa_info->root.dynobj = dynobj = abfd; | |
1300 | ||
3496cb2a L |
1301 | dlt = bfd_make_section_with_flags (dynobj, ".dlt", |
1302 | (SEC_ALLOC | |
1303 | | SEC_LOAD | |
1304 | | SEC_HAS_CONTENTS | |
1305 | | SEC_IN_MEMORY | |
1306 | | SEC_LINKER_CREATED)); | |
15bda425 | 1307 | if (!dlt |
15bda425 JL |
1308 | || !bfd_set_section_alignment (abfd, dlt, 3)) |
1309 | { | |
1310 | BFD_ASSERT (0); | |
b34976b6 | 1311 | return FALSE; |
15bda425 JL |
1312 | } |
1313 | ||
1314 | hppa_info->dlt_sec = dlt; | |
1315 | } | |
1316 | ||
b34976b6 | 1317 | return TRUE; |
15bda425 JL |
1318 | } |
1319 | ||
1320 | /* Create the stubs section. */ | |
1321 | ||
b34976b6 | 1322 | static bfd_boolean |
15bda425 JL |
1323 | get_stub (abfd, info, hppa_info) |
1324 | bfd *abfd; | |
edd21aca | 1325 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1326 | struct elf64_hppa_link_hash_table *hppa_info; |
1327 | { | |
1328 | asection *stub; | |
1329 | bfd *dynobj; | |
1330 | ||
1331 | stub = hppa_info->stub_sec; | |
1332 | if (!stub) | |
1333 | { | |
1334 | dynobj = hppa_info->root.dynobj; | |
1335 | if (!dynobj) | |
1336 | hppa_info->root.dynobj = dynobj = abfd; | |
1337 | ||
3496cb2a L |
1338 | stub = bfd_make_section_with_flags (dynobj, ".stub", |
1339 | (SEC_ALLOC | SEC_LOAD | |
1340 | | SEC_HAS_CONTENTS | |
1341 | | SEC_IN_MEMORY | |
1342 | | SEC_READONLY | |
1343 | | SEC_LINKER_CREATED)); | |
15bda425 | 1344 | if (!stub |
15bda425 JL |
1345 | || !bfd_set_section_alignment (abfd, stub, 3)) |
1346 | { | |
1347 | BFD_ASSERT (0); | |
b34976b6 | 1348 | return FALSE; |
15bda425 JL |
1349 | } |
1350 | ||
1351 | hppa_info->stub_sec = stub; | |
1352 | } | |
1353 | ||
b34976b6 | 1354 | return TRUE; |
15bda425 JL |
1355 | } |
1356 | ||
1357 | /* Create sections necessary for dynamic linking. This is only a rough | |
1358 | cut and will likely change as we learn more about the somewhat | |
1359 | unusual dynamic linking scheme HP uses. | |
1360 | ||
1361 | .stub: | |
1362 | Contains code to implement cross-space calls. The first time one | |
1363 | of the stubs is used it will call into the dynamic linker, later | |
1364 | calls will go straight to the target. | |
1365 | ||
1366 | The only stub we support right now looks like | |
1367 | ||
1368 | ldd OFFSET(%dp),%r1 | |
1369 | bve %r0(%r1) | |
1370 | ldd OFFSET+8(%dp),%dp | |
1371 | ||
1372 | Other stubs may be needed in the future. We may want the remove | |
1373 | the break/nop instruction. It is only used right now to keep the | |
1374 | offset of a .plt entry and a .stub entry in sync. | |
1375 | ||
1376 | .dlt: | |
1377 | This is what most people call the .got. HP used a different name. | |
1378 | Losers. | |
1379 | ||
1380 | .rela.dlt: | |
1381 | Relocations for the DLT. | |
1382 | ||
1383 | .plt: | |
1384 | Function pointers as address,gp pairs. | |
1385 | ||
1386 | .rela.plt: | |
1387 | Should contain dynamic IPLT (and EPLT?) relocations. | |
1388 | ||
1389 | .opd: | |
fe8bc63d | 1390 | FPTRS |
15bda425 JL |
1391 | |
1392 | .rela.opd: | |
1393 | EPLT relocations for symbols exported from shared libraries. */ | |
1394 | ||
b34976b6 | 1395 | static bfd_boolean |
15bda425 JL |
1396 | elf64_hppa_create_dynamic_sections (abfd, info) |
1397 | bfd *abfd; | |
1398 | struct bfd_link_info *info; | |
1399 | { | |
1400 | asection *s; | |
1401 | ||
1402 | if (! get_stub (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1403 | return FALSE; |
15bda425 JL |
1404 | |
1405 | if (! get_dlt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1406 | return FALSE; |
15bda425 JL |
1407 | |
1408 | if (! get_plt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1409 | return FALSE; |
15bda425 JL |
1410 | |
1411 | if (! get_opd (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1412 | return FALSE; |
15bda425 | 1413 | |
3496cb2a L |
1414 | s = bfd_make_section_with_flags (abfd, ".rela.dlt", |
1415 | (SEC_ALLOC | SEC_LOAD | |
1416 | | SEC_HAS_CONTENTS | |
1417 | | SEC_IN_MEMORY | |
1418 | | SEC_READONLY | |
1419 | | SEC_LINKER_CREATED)); | |
15bda425 | 1420 | if (s == NULL |
15bda425 | 1421 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1422 | return FALSE; |
15bda425 JL |
1423 | elf64_hppa_hash_table (info)->dlt_rel_sec = s; |
1424 | ||
3496cb2a L |
1425 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1426 | (SEC_ALLOC | SEC_LOAD | |
1427 | | SEC_HAS_CONTENTS | |
1428 | | SEC_IN_MEMORY | |
1429 | | SEC_READONLY | |
1430 | | SEC_LINKER_CREATED)); | |
15bda425 | 1431 | if (s == NULL |
15bda425 | 1432 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1433 | return FALSE; |
15bda425 JL |
1434 | elf64_hppa_hash_table (info)->plt_rel_sec = s; |
1435 | ||
3496cb2a L |
1436 | s = bfd_make_section_with_flags (abfd, ".rela.data", |
1437 | (SEC_ALLOC | SEC_LOAD | |
1438 | | SEC_HAS_CONTENTS | |
1439 | | SEC_IN_MEMORY | |
1440 | | SEC_READONLY | |
1441 | | SEC_LINKER_CREATED)); | |
15bda425 | 1442 | if (s == NULL |
15bda425 | 1443 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1444 | return FALSE; |
15bda425 JL |
1445 | elf64_hppa_hash_table (info)->other_rel_sec = s; |
1446 | ||
3496cb2a L |
1447 | s = bfd_make_section_with_flags (abfd, ".rela.opd", |
1448 | (SEC_ALLOC | SEC_LOAD | |
1449 | | SEC_HAS_CONTENTS | |
1450 | | SEC_IN_MEMORY | |
1451 | | SEC_READONLY | |
1452 | | SEC_LINKER_CREATED)); | |
15bda425 | 1453 | if (s == NULL |
15bda425 | 1454 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1455 | return FALSE; |
15bda425 JL |
1456 | elf64_hppa_hash_table (info)->opd_rel_sec = s; |
1457 | ||
b34976b6 | 1458 | return TRUE; |
15bda425 JL |
1459 | } |
1460 | ||
1461 | /* Allocate dynamic relocations for those symbols that turned out | |
1462 | to be dynamic. */ | |
1463 | ||
b34976b6 | 1464 | static bfd_boolean |
15bda425 JL |
1465 | allocate_dynrel_entries (dyn_h, data) |
1466 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1467 | PTR data; | |
1468 | { | |
1469 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1470 | struct elf64_hppa_link_hash_table *hppa_info; | |
1471 | struct elf64_hppa_dyn_reloc_entry *rent; | |
b34976b6 | 1472 | bfd_boolean dynamic_symbol, shared; |
15bda425 JL |
1473 | |
1474 | hppa_info = elf64_hppa_hash_table (x->info); | |
1475 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info); | |
1476 | shared = x->info->shared; | |
1477 | ||
1478 | /* We may need to allocate relocations for a non-dynamic symbol | |
1479 | when creating a shared library. */ | |
1480 | if (!dynamic_symbol && !shared) | |
b34976b6 | 1481 | return TRUE; |
15bda425 JL |
1482 | |
1483 | /* Take care of the normal data relocations. */ | |
1484 | ||
1485 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
1486 | { | |
d663e1cd JL |
1487 | /* Allocate one iff we are building a shared library, the relocation |
1488 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
1489 | if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
1490 | continue; | |
1491 | ||
eea6121a | 1492 | hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1493 | |
1494 | /* Make sure this symbol gets into the dynamic symbol table if it is | |
1495 | not already recorded. ?!? This should not be in the loop since | |
1496 | the symbol need only be added once. */ | |
47b7c2db AM |
1497 | if (dyn_h->h == 0 |
1498 | || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI)) | |
c152c796 | 1499 | if (!bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 1500 | (x->info, rent->sec->owner, dyn_h->sym_indx)) |
b34976b6 | 1501 | return FALSE; |
15bda425 JL |
1502 | } |
1503 | ||
1504 | /* Take care of the GOT and PLT relocations. */ | |
1505 | ||
1506 | if ((dynamic_symbol || shared) && dyn_h->want_dlt) | |
eea6121a | 1507 | hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1508 | |
1509 | /* If we are building a shared library, then every symbol that has an | |
1510 | opd entry will need an EPLT relocation to relocate the symbol's address | |
1511 | and __gp value based on the runtime load address. */ | |
1512 | if (shared && dyn_h->want_opd) | |
eea6121a | 1513 | hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1514 | |
1515 | if (dyn_h->want_plt && dynamic_symbol) | |
1516 | { | |
1517 | bfd_size_type t = 0; | |
1518 | ||
1519 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
1520 | shared libraries get two REL relocations. Local symbols in | |
1521 | main applications get nothing. */ | |
1522 | if (dynamic_symbol) | |
1523 | t = sizeof (Elf64_External_Rela); | |
1524 | else if (shared) | |
1525 | t = 2 * sizeof (Elf64_External_Rela); | |
1526 | ||
eea6121a | 1527 | hppa_info->plt_rel_sec->size += t; |
15bda425 JL |
1528 | } |
1529 | ||
b34976b6 | 1530 | return TRUE; |
15bda425 JL |
1531 | } |
1532 | ||
1533 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1534 | regular object. */ | |
1535 | ||
b34976b6 | 1536 | static bfd_boolean |
15bda425 | 1537 | elf64_hppa_adjust_dynamic_symbol (info, h) |
edd21aca | 1538 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
15bda425 JL |
1539 | struct elf_link_hash_entry *h; |
1540 | { | |
1541 | /* ??? Undefined symbols with PLT entries should be re-defined | |
1542 | to be the PLT entry. */ | |
1543 | ||
1544 | /* If this is a weak symbol, and there is a real definition, the | |
1545 | processor independent code will have arranged for us to see the | |
1546 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1547 | if (h->u.weakdef != NULL) |
15bda425 | 1548 | { |
f6e332e6 AM |
1549 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1550 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1551 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1552 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1553 | return TRUE; |
15bda425 JL |
1554 | } |
1555 | ||
1556 | /* If this is a reference to a symbol defined by a dynamic object which | |
1557 | is not a function, we might allocate the symbol in our .dynbss section | |
1558 | and allocate a COPY dynamic relocation. | |
1559 | ||
1560 | But PA64 code is canonically PIC, so as a rule we can avoid this sort | |
1561 | of hackery. */ | |
1562 | ||
b34976b6 | 1563 | return TRUE; |
15bda425 JL |
1564 | } |
1565 | ||
47b7c2db AM |
1566 | /* This function is called via elf_link_hash_traverse to mark millicode |
1567 | symbols with a dynindx of -1 and to remove the string table reference | |
1568 | from the dynamic symbol table. If the symbol is not a millicode symbol, | |
1569 | elf64_hppa_mark_exported_functions is called. */ | |
1570 | ||
b34976b6 | 1571 | static bfd_boolean |
47b7c2db AM |
1572 | elf64_hppa_mark_milli_and_exported_functions (h, data) |
1573 | struct elf_link_hash_entry *h; | |
1574 | PTR data; | |
1575 | { | |
1576 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
1577 | struct elf_link_hash_entry *elf = h; | |
1578 | ||
1579 | if (elf->root.type == bfd_link_hash_warning) | |
1580 | elf = (struct elf_link_hash_entry *) elf->root.u.i.link; | |
1581 | ||
1582 | if (elf->type == STT_PARISC_MILLI) | |
1583 | { | |
1584 | if (elf->dynindx != -1) | |
1585 | { | |
1586 | elf->dynindx = -1; | |
1587 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1588 | elf->dynstr_index); | |
1589 | } | |
b34976b6 | 1590 | return TRUE; |
47b7c2db AM |
1591 | } |
1592 | ||
1593 | return elf64_hppa_mark_exported_functions (h, data); | |
1594 | } | |
1595 | ||
15bda425 JL |
1596 | /* Set the final sizes of the dynamic sections and allocate memory for |
1597 | the contents of our special sections. */ | |
1598 | ||
b34976b6 | 1599 | static bfd_boolean |
15bda425 JL |
1600 | elf64_hppa_size_dynamic_sections (output_bfd, info) |
1601 | bfd *output_bfd; | |
1602 | struct bfd_link_info *info; | |
1603 | { | |
1604 | bfd *dynobj; | |
1605 | asection *s; | |
b34976b6 AM |
1606 | bfd_boolean plt; |
1607 | bfd_boolean relocs; | |
1608 | bfd_boolean reltext; | |
15bda425 JL |
1609 | struct elf64_hppa_allocate_data data; |
1610 | struct elf64_hppa_link_hash_table *hppa_info; | |
1611 | ||
1612 | hppa_info = elf64_hppa_hash_table (info); | |
1613 | ||
1614 | dynobj = elf_hash_table (info)->dynobj; | |
1615 | BFD_ASSERT (dynobj != NULL); | |
1616 | ||
47b7c2db AM |
1617 | /* Mark each function this program exports so that we will allocate |
1618 | space in the .opd section for each function's FPTR. If we are | |
1619 | creating dynamic sections, change the dynamic index of millicode | |
1620 | symbols to -1 and remove them from the string table for .dynstr. | |
1621 | ||
1622 | We have to traverse the main linker hash table since we have to | |
1623 | find functions which may not have been mentioned in any relocs. */ | |
1624 | elf_link_hash_traverse (elf_hash_table (info), | |
1625 | (elf_hash_table (info)->dynamic_sections_created | |
1626 | ? elf64_hppa_mark_milli_and_exported_functions | |
1627 | : elf64_hppa_mark_exported_functions), | |
1628 | info); | |
1629 | ||
15bda425 JL |
1630 | if (elf_hash_table (info)->dynamic_sections_created) |
1631 | { | |
1632 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1633 | if (info->executable) |
15bda425 JL |
1634 | { |
1635 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1636 | BFD_ASSERT (s != NULL); | |
eea6121a | 1637 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
15bda425 JL |
1638 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1639 | } | |
1640 | } | |
1641 | else | |
1642 | { | |
1643 | /* We may have created entries in the .rela.got section. | |
1644 | However, if we are not creating the dynamic sections, we will | |
1645 | not actually use these entries. Reset the size of .rela.dlt, | |
1646 | which will cause it to get stripped from the output file | |
1647 | below. */ | |
1648 | s = bfd_get_section_by_name (dynobj, ".rela.dlt"); | |
1649 | if (s != NULL) | |
eea6121a | 1650 | s->size = 0; |
15bda425 JL |
1651 | } |
1652 | ||
1653 | /* Allocate the GOT entries. */ | |
1654 | ||
1655 | data.info = info; | |
1656 | if (elf64_hppa_hash_table (info)->dlt_sec) | |
1657 | { | |
1658 | data.ofs = 0x0; | |
1659 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1660 | allocate_global_data_dlt, &data); | |
eea6121a | 1661 | hppa_info->dlt_sec->size = data.ofs; |
15bda425 JL |
1662 | |
1663 | data.ofs = 0x0; | |
1664 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1665 | allocate_global_data_plt, &data); | |
eea6121a | 1666 | hppa_info->plt_sec->size = data.ofs; |
15bda425 JL |
1667 | |
1668 | data.ofs = 0x0; | |
1669 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1670 | allocate_global_data_stub, &data); | |
eea6121a | 1671 | hppa_info->stub_sec->size = data.ofs; |
15bda425 JL |
1672 | } |
1673 | ||
15bda425 JL |
1674 | /* Allocate space for entries in the .opd section. */ |
1675 | if (elf64_hppa_hash_table (info)->opd_sec) | |
1676 | { | |
1677 | data.ofs = 0; | |
1678 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1679 | allocate_global_data_opd, &data); | |
eea6121a | 1680 | hppa_info->opd_sec->size = data.ofs; |
15bda425 JL |
1681 | } |
1682 | ||
1683 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1684 | if (hppa_info->root.dynamic_sections_created) | |
1685 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1686 | allocate_dynrel_entries, &data); | |
1687 | ||
1688 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 AM |
1689 | plt = FALSE; |
1690 | relocs = FALSE; | |
1691 | reltext = FALSE; | |
15bda425 JL |
1692 | for (s = dynobj->sections; s != NULL; s = s->next) |
1693 | { | |
1694 | const char *name; | |
15bda425 JL |
1695 | |
1696 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1697 | continue; | |
1698 | ||
1699 | /* It's OK to base decisions on the section name, because none | |
1700 | of the dynobj section names depend upon the input files. */ | |
1701 | name = bfd_get_section_name (dynobj, s); | |
1702 | ||
15bda425 JL |
1703 | if (strcmp (name, ".plt") == 0) |
1704 | { | |
c456f082 AM |
1705 | /* Remember whether there is a PLT. */ |
1706 | plt = s->size != 0; | |
15bda425 | 1707 | } |
c456f082 | 1708 | else if (strcmp (name, ".opd") == 0 |
0112cd26 | 1709 | || CONST_STRNEQ (name, ".dlt") |
c456f082 AM |
1710 | || strcmp (name, ".stub") == 0 |
1711 | || strcmp (name, ".got") == 0) | |
15bda425 | 1712 | { |
d663e1cd | 1713 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 | 1714 | } |
0112cd26 | 1715 | else if (CONST_STRNEQ (name, ".rela")) |
15bda425 | 1716 | { |
c456f082 | 1717 | if (s->size != 0) |
15bda425 JL |
1718 | { |
1719 | asection *target; | |
1720 | ||
1721 | /* Remember whether there are any reloc sections other | |
1722 | than .rela.plt. */ | |
1723 | if (strcmp (name, ".rela.plt") != 0) | |
1724 | { | |
1725 | const char *outname; | |
1726 | ||
b34976b6 | 1727 | relocs = TRUE; |
15bda425 JL |
1728 | |
1729 | /* If this relocation section applies to a read only | |
1730 | section, then we probably need a DT_TEXTREL | |
1731 | entry. The entries in the .rela.plt section | |
1732 | really apply to the .got section, which we | |
1733 | created ourselves and so know is not readonly. */ | |
1734 | outname = bfd_get_section_name (output_bfd, | |
1735 | s->output_section); | |
1736 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
1737 | if (target != NULL | |
1738 | && (target->flags & SEC_READONLY) != 0 | |
1739 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1740 | reltext = TRUE; |
15bda425 JL |
1741 | } |
1742 | ||
1743 | /* We use the reloc_count field as a counter if we need | |
1744 | to copy relocs into the output file. */ | |
1745 | s->reloc_count = 0; | |
1746 | } | |
1747 | } | |
c456f082 | 1748 | else |
15bda425 JL |
1749 | { |
1750 | /* It's not one of our sections, so don't allocate space. */ | |
1751 | continue; | |
1752 | } | |
1753 | ||
c456f082 | 1754 | if (s->size == 0) |
15bda425 | 1755 | { |
c456f082 AM |
1756 | /* If we don't need this section, strip it from the |
1757 | output file. This is mostly to handle .rela.bss and | |
1758 | .rela.plt. We must create both sections in | |
1759 | create_dynamic_sections, because they must be created | |
1760 | before the linker maps input sections to output | |
1761 | sections. The linker does that before | |
1762 | adjust_dynamic_symbol is called, and it is that | |
1763 | function which decides whether anything needs to go | |
1764 | into these sections. */ | |
8423293d | 1765 | s->flags |= SEC_EXCLUDE; |
15bda425 JL |
1766 | continue; |
1767 | } | |
1768 | ||
c456f082 AM |
1769 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1770 | continue; | |
1771 | ||
15bda425 | 1772 | /* Allocate memory for the section contents if it has not |
832d951b AM |
1773 | been allocated already. We use bfd_zalloc here in case |
1774 | unused entries are not reclaimed before the section's | |
1775 | contents are written out. This should not happen, but this | |
1776 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1777 | garbage. */ | |
15bda425 JL |
1778 | if (s->contents == NULL) |
1779 | { | |
eea6121a | 1780 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1781 | if (s->contents == NULL) |
b34976b6 | 1782 | return FALSE; |
15bda425 JL |
1783 | } |
1784 | } | |
1785 | ||
1786 | if (elf_hash_table (info)->dynamic_sections_created) | |
1787 | { | |
1788 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1789 | the PLT, it is how we communicate the __gp value of a load | |
1790 | module to the dynamic linker. */ | |
dc810e39 | 1791 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1792 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
1793 | |
1794 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) | |
1795 | || !add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 1796 | return FALSE; |
15bda425 JL |
1797 | |
1798 | /* Add some entries to the .dynamic section. We fill in the | |
1799 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1800 | must add the entries now so that we get the correct size for | |
1801 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1802 | dynamic linker and used by the debugger. */ | |
1803 | if (! info->shared) | |
1804 | { | |
dc810e39 AM |
1805 | if (!add_dynamic_entry (DT_DEBUG, 0) |
1806 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) | |
1807 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) | |
b34976b6 | 1808 | return FALSE; |
15bda425 JL |
1809 | } |
1810 | ||
f2482cb2 NC |
1811 | /* Force DT_FLAGS to always be set. |
1812 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1813 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1814 | return FALSE; |
f2482cb2 | 1815 | |
15bda425 JL |
1816 | if (plt) |
1817 | { | |
dc810e39 AM |
1818 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
1819 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1820 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1821 | return FALSE; |
15bda425 JL |
1822 | } |
1823 | ||
1824 | if (relocs) | |
1825 | { | |
dc810e39 AM |
1826 | if (!add_dynamic_entry (DT_RELA, 0) |
1827 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1828 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1829 | return FALSE; |
15bda425 JL |
1830 | } |
1831 | ||
1832 | if (reltext) | |
1833 | { | |
dc810e39 | 1834 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1835 | return FALSE; |
d6cf2879 | 1836 | info->flags |= DF_TEXTREL; |
15bda425 JL |
1837 | } |
1838 | } | |
dc810e39 | 1839 | #undef add_dynamic_entry |
15bda425 | 1840 | |
b34976b6 | 1841 | return TRUE; |
15bda425 JL |
1842 | } |
1843 | ||
1844 | /* Called after we have output the symbol into the dynamic symbol | |
1845 | table, but before we output the symbol into the normal symbol | |
1846 | table. | |
1847 | ||
1848 | For some symbols we had to change their address when outputting | |
1849 | the dynamic symbol table. We undo that change here so that | |
1850 | the symbols have their expected value in the normal symbol | |
1851 | table. Ick. */ | |
1852 | ||
b34976b6 | 1853 | static bfd_boolean |
754021d0 | 1854 | elf64_hppa_link_output_symbol_hook (info, name, sym, input_sec, h) |
15bda425 JL |
1855 | struct bfd_link_info *info; |
1856 | const char *name; | |
1857 | Elf_Internal_Sym *sym; | |
edd21aca | 1858 | asection *input_sec ATTRIBUTE_UNUSED; |
754021d0 | 1859 | struct elf_link_hash_entry *h; |
15bda425 JL |
1860 | { |
1861 | struct elf64_hppa_link_hash_table *hppa_info; | |
1862 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1863 | ||
1864 | /* We may be called with the file symbol or section symbols. | |
1865 | They never need munging, so it is safe to ignore them. */ | |
1866 | if (!name) | |
b34976b6 | 1867 | return TRUE; |
15bda425 JL |
1868 | |
1869 | /* Get the PA dyn_symbol (if any) associated with NAME. */ | |
1870 | hppa_info = elf64_hppa_hash_table (info); | |
1871 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1872 | name, FALSE, FALSE); |
ac7bbf74 | 1873 | if (!dyn_h || dyn_h->h != h) |
754021d0 | 1874 | return TRUE; |
15bda425 | 1875 | |
832d951b AM |
1876 | /* Function symbols for which we created .opd entries *may* have been |
1877 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1878 | ||
1879 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1880 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1881 | mark_exported_functions and check to see if it was overwritten | |
1882 | here instead of just checking dyn_h->h->dynindx. */ | |
ac7bbf74 | 1883 | if (dyn_h->want_opd && dyn_h->st_shndx != -1) |
15bda425 JL |
1884 | { |
1885 | /* Restore the saved value and section index. */ | |
1886 | sym->st_value = dyn_h->st_value; | |
fe8bc63d | 1887 | sym->st_shndx = dyn_h->st_shndx; |
15bda425 JL |
1888 | } |
1889 | ||
b34976b6 | 1890 | return TRUE; |
15bda425 JL |
1891 | } |
1892 | ||
1893 | /* Finish up dynamic symbol handling. We set the contents of various | |
1894 | dynamic sections here. */ | |
1895 | ||
b34976b6 | 1896 | static bfd_boolean |
15bda425 JL |
1897 | elf64_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) |
1898 | bfd *output_bfd; | |
1899 | struct bfd_link_info *info; | |
1900 | struct elf_link_hash_entry *h; | |
1901 | Elf_Internal_Sym *sym; | |
1902 | { | |
1903 | asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel; | |
1904 | struct elf64_hppa_link_hash_table *hppa_info; | |
1905 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1906 | ||
1907 | hppa_info = elf64_hppa_hash_table (info); | |
1908 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1909 | h->root.root.string, FALSE, FALSE); |
15bda425 JL |
1910 | |
1911 | stub = hppa_info->stub_sec; | |
1912 | splt = hppa_info->plt_sec; | |
1913 | sdlt = hppa_info->dlt_sec; | |
1914 | sopd = hppa_info->opd_sec; | |
1915 | spltrel = hppa_info->plt_rel_sec; | |
1916 | sdltrel = hppa_info->dlt_rel_sec; | |
1917 | ||
15bda425 JL |
1918 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1919 | value when building the dynamic symbol table for a shared library. | |
1920 | At least for symbols that refer to functions. | |
1921 | ||
1922 | We will store a new value and section index into the symbol long | |
1923 | enough to output it into the dynamic symbol table, then we restore | |
1924 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
1925 | if (dyn_h && dyn_h->want_opd) | |
1926 | { | |
f12123c0 | 1927 | BFD_ASSERT (sopd != NULL); |
d663e1cd | 1928 | |
15bda425 JL |
1929 | /* Save away the original value and section index so that we |
1930 | can restore them later. */ | |
1931 | dyn_h->st_value = sym->st_value; | |
1932 | dyn_h->st_shndx = sym->st_shndx; | |
1933 | ||
1934 | /* For the dynamic symbol table entry, we want the value to be | |
1935 | address of this symbol's entry within the .opd section. */ | |
1936 | sym->st_value = (dyn_h->opd_offset | |
1937 | + sopd->output_offset | |
1938 | + sopd->output_section->vma); | |
1939 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
1940 | sopd->output_section); | |
1941 | } | |
1942 | ||
1943 | /* Initialize a .plt entry if requested. */ | |
1944 | if (dyn_h && dyn_h->want_plt | |
1945 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
1946 | { | |
1947 | bfd_vma value; | |
1948 | Elf_Internal_Rela rel; | |
947216bf | 1949 | bfd_byte *loc; |
15bda425 | 1950 | |
f12123c0 | 1951 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
d663e1cd | 1952 | |
15bda425 JL |
1953 | /* We do not actually care about the value in the PLT entry |
1954 | if we are creating a shared library and the symbol is | |
1955 | still undefined, we create a dynamic relocation to fill | |
1956 | in the correct value. */ | |
1957 | if (info->shared && h->root.type == bfd_link_hash_undefined) | |
1958 | value = 0; | |
1959 | else | |
1960 | value = (h->root.u.def.value + h->root.u.def.section->vma); | |
1961 | ||
fe8bc63d | 1962 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
1963 | |
1964 | The format of a plt entry is | |
fe8bc63d | 1965 | <funcaddr> <__gp>. |
15bda425 JL |
1966 | |
1967 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 1968 | install the PLT entry. |
15bda425 JL |
1969 | |
1970 | We are modifying the in-memory PLT contents here, so we do not add | |
1971 | in the output_offset of the PLT section. */ | |
1972 | ||
1973 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset); | |
1974 | value = _bfd_get_gp_value (splt->output_section->owner); | |
1975 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8); | |
1976 | ||
1977 | /* Create a dynamic IPLT relocation for this entry. | |
1978 | ||
1979 | We are creating a relocation in the output file's PLT section, | |
1980 | which is included within the DLT secton. So we do need to include | |
1981 | the PLT's output_offset in the computation of the relocation's | |
1982 | address. */ | |
1983 | rel.r_offset = (dyn_h->plt_offset + splt->output_offset | |
1984 | + splt->output_section->vma); | |
1985 | rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT); | |
1986 | rel.r_addend = 0; | |
1987 | ||
947216bf AM |
1988 | loc = spltrel->contents; |
1989 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
1990 | bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc); | |
15bda425 JL |
1991 | } |
1992 | ||
1993 | /* Initialize an external call stub entry if requested. */ | |
1994 | if (dyn_h && dyn_h->want_stub | |
1995 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
1996 | { | |
1997 | bfd_vma value; | |
1998 | int insn; | |
b352eebf | 1999 | unsigned int max_offset; |
15bda425 | 2000 | |
f12123c0 | 2001 | BFD_ASSERT (stub != NULL); |
d663e1cd | 2002 | |
15bda425 JL |
2003 | /* Install the generic stub template. |
2004 | ||
2005 | We are modifying the contents of the stub section, so we do not | |
2006 | need to include the stub section's output_offset here. */ | |
2007 | memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub)); | |
2008 | ||
2009 | /* Fix up the first ldd instruction. | |
2010 | ||
2011 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2012 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2013 | |
2014 | Note the plt_offset value is the value of the PLT entry relative to | |
2015 | the start of the PLT section. These instructions will reference | |
2016 | data relative to the value of __gp, which may not necessarily have | |
2017 | the same address as the start of the PLT section. | |
2018 | ||
2019 | gp_offset contains the offset of __gp within the PLT section. */ | |
2020 | value = dyn_h->plt_offset - hppa_info->gp_offset; | |
fe8bc63d | 2021 | |
15bda425 | 2022 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset); |
b352eebf AM |
2023 | if (output_bfd->arch_info->mach >= 25) |
2024 | { | |
2025 | /* Wide mode allows 16 bit offsets. */ | |
2026 | max_offset = 32768; | |
2027 | insn &= ~ 0xfff1; | |
dc810e39 | 2028 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2029 | } |
2030 | else | |
2031 | { | |
2032 | max_offset = 8192; | |
2033 | insn &= ~ 0x3ff1; | |
dc810e39 | 2034 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2035 | } |
2036 | ||
2037 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2038 | { | |
2039 | (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"), | |
2040 | dyn_h->root.string, | |
2041 | (long) value); | |
b34976b6 | 2042 | return FALSE; |
b352eebf AM |
2043 | } |
2044 | ||
dc810e39 | 2045 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2046 | stub->contents + dyn_h->stub_offset); |
2047 | ||
2048 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2049 | value += 8; |
15bda425 | 2050 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8); |
b352eebf AM |
2051 | if (output_bfd->arch_info->mach >= 25) |
2052 | { | |
2053 | insn &= ~ 0xfff1; | |
dc810e39 | 2054 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2055 | } |
2056 | else | |
2057 | { | |
2058 | insn &= ~ 0x3ff1; | |
dc810e39 | 2059 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2060 | } |
dc810e39 | 2061 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2062 | stub->contents + dyn_h->stub_offset + 8); |
2063 | } | |
2064 | ||
b34976b6 | 2065 | return TRUE; |
15bda425 JL |
2066 | } |
2067 | ||
2068 | /* The .opd section contains FPTRs for each function this file | |
2069 | exports. Initialize the FPTR entries. */ | |
2070 | ||
b34976b6 | 2071 | static bfd_boolean |
15bda425 JL |
2072 | elf64_hppa_finalize_opd (dyn_h, data) |
2073 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2074 | PTR data; | |
2075 | { | |
2076 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2077 | struct elf64_hppa_link_hash_table *hppa_info; | |
3db4b612 | 2078 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2079 | asection *sopd; |
2080 | asection *sopdrel; | |
2081 | ||
2082 | hppa_info = elf64_hppa_hash_table (info); | |
2083 | sopd = hppa_info->opd_sec; | |
2084 | sopdrel = hppa_info->opd_rel_sec; | |
2085 | ||
3db4b612 | 2086 | if (h && dyn_h->want_opd) |
15bda425 JL |
2087 | { |
2088 | bfd_vma value; | |
2089 | ||
fe8bc63d | 2090 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2091 | |
2092 | We are modifying the contents of the OPD section in memory, so we | |
2093 | do not need to include its output offset in this computation. */ | |
2094 | memset (sopd->contents + dyn_h->opd_offset, 0, 16); | |
2095 | ||
2096 | value = (h->root.u.def.value | |
2097 | + h->root.u.def.section->output_section->vma | |
2098 | + h->root.u.def.section->output_offset); | |
2099 | ||
2100 | /* The next word is the address of the function. */ | |
2101 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16); | |
2102 | ||
2103 | /* The last word is our local __gp value. */ | |
2104 | value = _bfd_get_gp_value (sopd->output_section->owner); | |
2105 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24); | |
2106 | } | |
2107 | ||
2108 | /* If we are generating a shared library, we must generate EPLT relocations | |
2109 | for each entry in the .opd, even for static functions (they may have | |
2110 | had their address taken). */ | |
2111 | if (info->shared && dyn_h && dyn_h->want_opd) | |
2112 | { | |
947216bf AM |
2113 | Elf_Internal_Rela rel; |
2114 | bfd_byte *loc; | |
15bda425 JL |
2115 | int dynindx; |
2116 | ||
2117 | /* We may need to do a relocation against a local symbol, in | |
2118 | which case we have to look up it's dynamic symbol index off | |
2119 | the local symbol hash table. */ | |
2120 | if (h && h->dynindx != -1) | |
2121 | dynindx = h->dynindx; | |
2122 | else | |
2123 | dynindx | |
2124 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2125 | dyn_h->sym_indx); | |
2126 | ||
2127 | /* The offset of this relocation is the absolute address of the | |
2128 | .opd entry for this symbol. */ | |
2129 | rel.r_offset = (dyn_h->opd_offset + sopd->output_offset | |
2130 | + sopd->output_section->vma); | |
2131 | ||
2132 | /* If H is non-null, then we have an external symbol. | |
2133 | ||
2134 | It is imperative that we use a different dynamic symbol for the | |
2135 | EPLT relocation if the symbol has global scope. | |
2136 | ||
2137 | In the dynamic symbol table, the function symbol will have a value | |
2138 | which is address of the function's .opd entry. | |
2139 | ||
2140 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2141 | (if we did, the data in the .opd would reference itself rather | |
2142 | than the actual address of the function). Instead we have to use | |
2143 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2144 | function symbol. |
15bda425 JL |
2145 | |
2146 | We prefix the original symbol with a "." and use the new symbol in | |
2147 | the EPLT relocation. This new symbol has already been recorded in | |
2148 | the symbol table, we just have to look it up and use it. | |
2149 | ||
2150 | We do not have such problems with static functions because we do | |
2151 | not make their addresses in the dynamic symbol table point to | |
2152 | the .opd entry. Ultimately this should be safe since a static | |
2153 | function can not be directly referenced outside of its shared | |
2154 | library. | |
2155 | ||
2156 | We do have to play similar games for FPTR relocations in shared | |
2157 | libraries, including those for static symbols. See the FPTR | |
2158 | handling in elf64_hppa_finalize_dynreloc. */ | |
2159 | if (h) | |
2160 | { | |
2161 | char *new_name; | |
2162 | struct elf_link_hash_entry *nh; | |
2163 | ||
2164 | new_name = alloca (strlen (h->root.root.string) + 2); | |
2165 | new_name[0] = '.'; | |
2166 | strcpy (new_name + 1, h->root.root.string); | |
2167 | ||
2168 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
b34976b6 | 2169 | new_name, FALSE, FALSE, FALSE); |
15bda425 JL |
2170 | |
2171 | /* All we really want from the new symbol is its dynamic | |
2172 | symbol index. */ | |
2173 | dynindx = nh->dynindx; | |
2174 | } | |
2175 | ||
2176 | rel.r_addend = 0; | |
2177 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2178 | ||
947216bf AM |
2179 | loc = sopdrel->contents; |
2180 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2181 | bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc); | |
15bda425 | 2182 | } |
b34976b6 | 2183 | return TRUE; |
15bda425 JL |
2184 | } |
2185 | ||
2186 | /* The .dlt section contains addresses for items referenced through the | |
2187 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2188 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2189 | ||
b34976b6 | 2190 | static bfd_boolean |
15bda425 JL |
2191 | elf64_hppa_finalize_dlt (dyn_h, data) |
2192 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2193 | PTR data; | |
2194 | { | |
2195 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2196 | struct elf64_hppa_link_hash_table *hppa_info; | |
2197 | asection *sdlt, *sdltrel; | |
3db4b612 | 2198 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2199 | |
2200 | hppa_info = elf64_hppa_hash_table (info); | |
2201 | ||
2202 | sdlt = hppa_info->dlt_sec; | |
2203 | sdltrel = hppa_info->dlt_rel_sec; | |
2204 | ||
2205 | /* H/DYN_H may refer to a local variable and we know it's | |
2206 | address, so there is no need to create a relocation. Just install | |
2207 | the proper value into the DLT, note this shortcut can not be | |
2208 | skipped when building a shared library. */ | |
3db4b612 | 2209 | if (! info->shared && h && dyn_h->want_dlt) |
15bda425 JL |
2210 | { |
2211 | bfd_vma value; | |
2212 | ||
2213 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2214 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2215 | |
2216 | We include the OPD's output offset in this computation as | |
2217 | we are referring to an absolute address in the resulting | |
2218 | object file. */ | |
2219 | if (dyn_h->want_opd) | |
2220 | { | |
2221 | value = (dyn_h->opd_offset | |
2222 | + hppa_info->opd_sec->output_offset | |
2223 | + hppa_info->opd_sec->output_section->vma); | |
2224 | } | |
37f4508b AM |
2225 | else if ((h->root.type == bfd_link_hash_defined |
2226 | || h->root.type == bfd_link_hash_defweak) | |
2227 | && h->root.u.def.section) | |
15bda425 | 2228 | { |
3db4b612 | 2229 | value = h->root.u.def.value + h->root.u.def.section->output_offset; |
15bda425 JL |
2230 | if (h->root.u.def.section->output_section) |
2231 | value += h->root.u.def.section->output_section->vma; | |
2232 | else | |
2233 | value += h->root.u.def.section->vma; | |
2234 | } | |
3db4b612 JL |
2235 | else |
2236 | /* We have an undefined function reference. */ | |
2237 | value = 0; | |
15bda425 JL |
2238 | |
2239 | /* We do not need to include the output offset of the DLT section | |
2240 | here because we are modifying the in-memory contents. */ | |
2241 | bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset); | |
2242 | } | |
2243 | ||
4cc11e76 | 2244 | /* Create a relocation for the DLT entry associated with this symbol. |
15bda425 JL |
2245 | When building a shared library the symbol does not have to be dynamic. */ |
2246 | if (dyn_h->want_dlt | |
2247 | && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared)) | |
2248 | { | |
947216bf AM |
2249 | Elf_Internal_Rela rel; |
2250 | bfd_byte *loc; | |
15bda425 JL |
2251 | int dynindx; |
2252 | ||
2253 | /* We may need to do a relocation against a local symbol, in | |
2254 | which case we have to look up it's dynamic symbol index off | |
2255 | the local symbol hash table. */ | |
2256 | if (h && h->dynindx != -1) | |
2257 | dynindx = h->dynindx; | |
2258 | else | |
2259 | dynindx | |
2260 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2261 | dyn_h->sym_indx); | |
2262 | ||
15bda425 JL |
2263 | /* Create a dynamic relocation for this entry. Do include the output |
2264 | offset of the DLT entry since we need an absolute address in the | |
2265 | resulting object file. */ | |
2266 | rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset | |
2267 | + sdlt->output_section->vma); | |
2268 | if (h && h->type == STT_FUNC) | |
2269 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); | |
2270 | else | |
2271 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2272 | rel.r_addend = 0; | |
2273 | ||
947216bf AM |
2274 | loc = sdltrel->contents; |
2275 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2276 | bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc); | |
15bda425 | 2277 | } |
b34976b6 | 2278 | return TRUE; |
15bda425 JL |
2279 | } |
2280 | ||
2281 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2282 | for dynamic functions used to initialize static data. */ | |
2283 | ||
b34976b6 | 2284 | static bfd_boolean |
15bda425 JL |
2285 | elf64_hppa_finalize_dynreloc (dyn_h, data) |
2286 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
2287 | PTR data; | |
2288 | { | |
2289 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2290 | struct elf64_hppa_link_hash_table *hppa_info; | |
2291 | struct elf_link_hash_entry *h; | |
2292 | int dynamic_symbol; | |
2293 | ||
2294 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info); | |
2295 | ||
2296 | if (!dynamic_symbol && !info->shared) | |
b34976b6 | 2297 | return TRUE; |
15bda425 JL |
2298 | |
2299 | if (dyn_h->reloc_entries) | |
2300 | { | |
2301 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2302 | int dynindx; | |
2303 | ||
2304 | hppa_info = elf64_hppa_hash_table (info); | |
2305 | h = dyn_h->h; | |
2306 | ||
2307 | /* We may need to do a relocation against a local symbol, in | |
2308 | which case we have to look up it's dynamic symbol index off | |
2309 | the local symbol hash table. */ | |
2310 | if (h && h->dynindx != -1) | |
2311 | dynindx = h->dynindx; | |
2312 | else | |
2313 | dynindx | |
2314 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2315 | dyn_h->sym_indx); | |
2316 | ||
2317 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
2318 | { | |
947216bf AM |
2319 | Elf_Internal_Rela rel; |
2320 | bfd_byte *loc; | |
15bda425 | 2321 | |
d663e1cd JL |
2322 | /* Allocate one iff we are building a shared library, the relocation |
2323 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
2324 | if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
2325 | continue; | |
15bda425 | 2326 | |
fe8bc63d | 2327 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2328 | |
2329 | We need the output offset for the reloc's section because | |
2330 | we are creating an absolute address in the resulting object | |
2331 | file. */ | |
2332 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2333 | + rent->sec->output_section->vma); | |
2334 | ||
2335 | /* An FPTR64 relocation implies that we took the address of | |
2336 | a function and that the function has an entry in the .opd | |
2337 | section. We want the FPTR64 relocation to reference the | |
2338 | entry in .opd. | |
2339 | ||
2340 | We could munge the symbol value in the dynamic symbol table | |
2341 | (in fact we already do for functions with global scope) to point | |
2342 | to the .opd entry. Then we could use that dynamic symbol in | |
2343 | this relocation. | |
2344 | ||
2345 | Or we could do something sensible, not munge the symbol's | |
2346 | address and instead just use a different symbol to reference | |
2347 | the .opd entry. At least that seems sensible until you | |
2348 | realize there's no local dynamic symbols we can use for that | |
2349 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2350 | |
15bda425 JL |
2351 | We use a section symbol recorded by check_relocs as the |
2352 | base symbol for the relocation. The addend is the difference | |
2353 | between the section symbol and the address of the .opd entry. */ | |
3db4b612 | 2354 | if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) |
15bda425 JL |
2355 | { |
2356 | bfd_vma value, value2; | |
15bda425 JL |
2357 | |
2358 | /* First compute the address of the opd entry for this symbol. */ | |
2359 | value = (dyn_h->opd_offset | |
2360 | + hppa_info->opd_sec->output_section->vma | |
2361 | + hppa_info->opd_sec->output_offset); | |
2362 | ||
2363 | /* Compute the value of the start of the section with | |
2364 | the relocation. */ | |
2365 | value2 = (rent->sec->output_section->vma | |
2366 | + rent->sec->output_offset); | |
2367 | ||
2368 | /* Compute the difference between the start of the section | |
2369 | with the relocation and the opd entry. */ | |
2370 | value -= value2; | |
fe8bc63d | 2371 | |
15bda425 JL |
2372 | /* The result becomes the addend of the relocation. */ |
2373 | rel.r_addend = value; | |
2374 | ||
2375 | /* The section symbol becomes the symbol for the dynamic | |
2376 | relocation. */ | |
2377 | dynindx | |
2378 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2379 | rent->sec->owner, | |
2380 | rent->sec_symndx); | |
2381 | } | |
2382 | else | |
2383 | rel.r_addend = rent->addend; | |
2384 | ||
2385 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2386 | ||
947216bf AM |
2387 | loc = hppa_info->other_rel_sec->contents; |
2388 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2389 | * sizeof (Elf64_External_Rela)); | |
15bda425 | 2390 | bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner, |
947216bf | 2391 | &rel, loc); |
15bda425 JL |
2392 | } |
2393 | } | |
2394 | ||
b34976b6 | 2395 | return TRUE; |
15bda425 JL |
2396 | } |
2397 | ||
5ac81c74 JL |
2398 | /* Used to decide how to sort relocs in an optimal manner for the |
2399 | dynamic linker, before writing them out. */ | |
2400 | ||
2401 | static enum elf_reloc_type_class | |
2402 | elf64_hppa_reloc_type_class (rela) | |
2403 | const Elf_Internal_Rela *rela; | |
2404 | { | |
2405 | if (ELF64_R_SYM (rela->r_info) == 0) | |
2406 | return reloc_class_relative; | |
2407 | ||
2408 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2409 | { | |
2410 | case R_PARISC_IPLT: | |
2411 | return reloc_class_plt; | |
2412 | case R_PARISC_COPY: | |
2413 | return reloc_class_copy; | |
2414 | default: | |
2415 | return reloc_class_normal; | |
2416 | } | |
2417 | } | |
2418 | ||
15bda425 JL |
2419 | /* Finish up the dynamic sections. */ |
2420 | ||
b34976b6 | 2421 | static bfd_boolean |
15bda425 JL |
2422 | elf64_hppa_finish_dynamic_sections (output_bfd, info) |
2423 | bfd *output_bfd; | |
2424 | struct bfd_link_info *info; | |
2425 | { | |
2426 | bfd *dynobj; | |
2427 | asection *sdyn; | |
2428 | struct elf64_hppa_link_hash_table *hppa_info; | |
2429 | ||
2430 | hppa_info = elf64_hppa_hash_table (info); | |
2431 | ||
2432 | /* Finalize the contents of the .opd section. */ | |
2433 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2434 | elf64_hppa_finalize_opd, | |
2435 | info); | |
2436 | ||
2437 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2438 | elf64_hppa_finalize_dynreloc, | |
2439 | info); | |
2440 | ||
2441 | /* Finalize the contents of the .dlt section. */ | |
2442 | dynobj = elf_hash_table (info)->dynobj; | |
2443 | /* Finalize the contents of the .dlt section. */ | |
2444 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2445 | elf64_hppa_finalize_dlt, | |
2446 | info); | |
2447 | ||
15bda425 JL |
2448 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2449 | ||
2450 | if (elf_hash_table (info)->dynamic_sections_created) | |
2451 | { | |
2452 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2453 | |
2454 | BFD_ASSERT (sdyn != NULL); | |
2455 | ||
2456 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 2457 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
15bda425 JL |
2458 | for (; dyncon < dynconend; dyncon++) |
2459 | { | |
2460 | Elf_Internal_Dyn dyn; | |
2461 | asection *s; | |
2462 | ||
2463 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2464 | ||
2465 | switch (dyn.d_tag) | |
2466 | { | |
2467 | default: | |
2468 | break; | |
2469 | ||
2470 | case DT_HP_LOAD_MAP: | |
2471 | /* Compute the absolute address of 16byte scratchpad area | |
2472 | for the dynamic linker. | |
2473 | ||
2474 | By convention the linker script will allocate the scratchpad | |
2475 | area at the start of the .data section. So all we have to | |
2476 | to is find the start of the .data section. */ | |
2477 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
2478 | dyn.d_un.d_ptr = s->vma; | |
2479 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2480 | break; | |
2481 | ||
2482 | case DT_PLTGOT: | |
2483 | /* HP's use PLTGOT to set the GOT register. */ | |
2484 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2485 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2486 | break; | |
2487 | ||
2488 | case DT_JMPREL: | |
2489 | s = hppa_info->plt_rel_sec; | |
2490 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2491 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2492 | break; | |
2493 | ||
2494 | case DT_PLTRELSZ: | |
2495 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2496 | dyn.d_un.d_val = s->size; |
15bda425 JL |
2497 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2498 | break; | |
2499 | ||
2500 | case DT_RELA: | |
2501 | s = hppa_info->other_rel_sec; | |
eea6121a | 2502 | if (! s || ! s->size) |
15bda425 | 2503 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2504 | if (! s || ! s->size) |
5ac81c74 | 2505 | s = hppa_info->opd_rel_sec; |
15bda425 JL |
2506 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2507 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2508 | break; | |
2509 | ||
2510 | case DT_RELASZ: | |
2511 | s = hppa_info->other_rel_sec; | |
eea6121a | 2512 | dyn.d_un.d_val = s->size; |
15bda425 | 2513 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2514 | dyn.d_un.d_val += s->size; |
15bda425 | 2515 | s = hppa_info->opd_rel_sec; |
eea6121a | 2516 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2517 | /* There is some question about whether or not the size of |
2518 | the PLT relocs should be included here. HP's tools do | |
2519 | it, so we'll emulate them. */ | |
2520 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2521 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2522 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2523 | break; | |
2524 | ||
2525 | } | |
2526 | } | |
2527 | } | |
2528 | ||
b34976b6 | 2529 | return TRUE; |
15bda425 JL |
2530 | } |
2531 | ||
235ecfbc NC |
2532 | /* Support for core dump NOTE sections. */ |
2533 | ||
2534 | static bfd_boolean | |
2535 | elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2536 | { | |
2537 | int offset; | |
2538 | size_t size; | |
2539 | ||
2540 | switch (note->descsz) | |
2541 | { | |
2542 | default: | |
2543 | return FALSE; | |
2544 | ||
2545 | case 760: /* Linux/hppa */ | |
2546 | /* pr_cursig */ | |
2547 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2548 | ||
2549 | /* pr_pid */ | |
2550 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2551 | ||
2552 | /* pr_reg */ | |
2553 | offset = 112; | |
2554 | size = 640; | |
2555 | ||
2556 | break; | |
2557 | } | |
2558 | ||
2559 | /* Make a ".reg/999" section. */ | |
2560 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2561 | size, note->descpos + offset); | |
2562 | } | |
2563 | ||
2564 | static bfd_boolean | |
2565 | elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2566 | { | |
2567 | char * command; | |
2568 | int n; | |
2569 | ||
2570 | switch (note->descsz) | |
2571 | { | |
2572 | default: | |
2573 | return FALSE; | |
2574 | ||
2575 | case 136: /* Linux/hppa elf_prpsinfo. */ | |
2576 | elf_tdata (abfd)->core_program | |
2577 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2578 | elf_tdata (abfd)->core_command | |
2579 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2580 | } | |
2581 | ||
2582 | /* Note that for some reason, a spurious space is tacked | |
2583 | onto the end of the args in some (at least one anyway) | |
2584 | implementations, so strip it off if it exists. */ | |
2585 | command = elf_tdata (abfd)->core_command; | |
2586 | n = strlen (command); | |
2587 | ||
2588 | if (0 < n && command[n - 1] == ' ') | |
2589 | command[n - 1] = '\0'; | |
2590 | ||
2591 | return TRUE; | |
2592 | } | |
2593 | ||
15bda425 JL |
2594 | /* Return the number of additional phdrs we will need. |
2595 | ||
2596 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2597 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2598 | |
2599 | This routine indicates that the backend needs one additional program | |
2600 | header for that case. | |
2601 | ||
2602 | Note we do not have access to the link info structure here, so we have | |
2603 | to guess whether or not we are building a shared library based on the | |
2604 | existence of a .interp section. */ | |
2605 | ||
2606 | static int | |
a6b96beb AM |
2607 | elf64_hppa_additional_program_headers (bfd *abfd, |
2608 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
15bda425 JL |
2609 | { |
2610 | asection *s; | |
2611 | ||
2612 | /* If we are creating a shared library, then we have to create a | |
2613 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2614 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2615 | if (! s) | |
2616 | return 1; | |
2617 | return 0; | |
2618 | } | |
2619 | ||
2620 | /* Allocate and initialize any program headers required by this | |
2621 | specific backend. | |
2622 | ||
2623 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2624 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2625 | |
2626 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2627 | for the HP linker. |
15bda425 JL |
2628 | |
2629 | Note we do not have access to the link info structure here, so we have | |
2630 | to guess whether or not we are building a shared library based on the | |
2631 | existence of a .interp section. */ | |
2632 | ||
b34976b6 | 2633 | static bfd_boolean |
8ded5a0f AM |
2634 | elf64_hppa_modify_segment_map (bfd *abfd, |
2635 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
15bda425 | 2636 | { |
edd21aca | 2637 | struct elf_segment_map *m; |
15bda425 JL |
2638 | asection *s; |
2639 | ||
2640 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2641 | if (! s) | |
2642 | { | |
2643 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2644 | if (m->p_type == PT_PHDR) | |
2645 | break; | |
2646 | if (m == NULL) | |
2647 | { | |
dc810e39 AM |
2648 | m = ((struct elf_segment_map *) |
2649 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2650 | if (m == NULL) |
b34976b6 | 2651 | return FALSE; |
15bda425 JL |
2652 | |
2653 | m->p_type = PT_PHDR; | |
2654 | m->p_flags = PF_R | PF_X; | |
2655 | m->p_flags_valid = 1; | |
2656 | m->p_paddr_valid = 1; | |
2657 | m->includes_phdrs = 1; | |
2658 | ||
2659 | m->next = elf_tdata (abfd)->segment_map; | |
2660 | elf_tdata (abfd)->segment_map = m; | |
2661 | } | |
2662 | } | |
2663 | ||
2664 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2665 | if (m->p_type == PT_LOAD) | |
2666 | { | |
0ba2a60e | 2667 | unsigned int i; |
15bda425 JL |
2668 | |
2669 | for (i = 0; i < m->count; i++) | |
2670 | { | |
2671 | /* The code "hint" is not really a hint. It is a requirement | |
2672 | for certain versions of the HP dynamic linker. Worse yet, | |
2673 | it must be set even if the shared library does not have | |
2674 | any code in its "text" segment (thus the check for .hash | |
2675 | to catch this situation). */ | |
2676 | if (m->sections[i]->flags & SEC_CODE | |
2677 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2678 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2679 | } | |
2680 | } | |
2681 | ||
b34976b6 | 2682 | return TRUE; |
15bda425 JL |
2683 | } |
2684 | ||
3fab46d0 AM |
2685 | /* Called when writing out an object file to decide the type of a |
2686 | symbol. */ | |
2687 | static int | |
2688 | elf64_hppa_elf_get_symbol_type (elf_sym, type) | |
2689 | Elf_Internal_Sym *elf_sym; | |
2690 | int type; | |
2691 | { | |
2692 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2693 | return STT_PARISC_MILLI; | |
2694 | else | |
2695 | return type; | |
2696 | } | |
2697 | ||
d97a8924 DA |
2698 | /* Support HP specific sections for core files. */ |
2699 | static bfd_boolean | |
2700 | elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index, | |
2701 | const char *typename) | |
2702 | { | |
927e625f MK |
2703 | if (hdr->p_type == PT_HP_CORE_KERNEL) |
2704 | { | |
2705 | asection *sect; | |
2706 | ||
2707 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)) | |
2708 | return FALSE; | |
2709 | ||
2710 | sect = bfd_make_section_anyway (abfd, ".kernel"); | |
2711 | if (sect == NULL) | |
2712 | return FALSE; | |
2713 | sect->size = hdr->p_filesz; | |
2714 | sect->filepos = hdr->p_offset; | |
2715 | sect->flags = SEC_HAS_CONTENTS | SEC_READONLY; | |
2716 | return TRUE; | |
2717 | } | |
2718 | ||
d97a8924 DA |
2719 | if (hdr->p_type == PT_HP_CORE_PROC) |
2720 | { | |
2721 | int sig; | |
2722 | ||
2723 | if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0) | |
2724 | return FALSE; | |
2725 | if (bfd_bread (&sig, 4, abfd) != 4) | |
2726 | return FALSE; | |
2727 | ||
2728 | elf_tdata (abfd)->core_signal = sig; | |
2729 | ||
927e625f | 2730 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)) |
d97a8924 | 2731 | return FALSE; |
927e625f MK |
2732 | |
2733 | /* GDB uses the ".reg" section to read register contents. */ | |
2734 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz, | |
2735 | hdr->p_offset); | |
d97a8924 DA |
2736 | } |
2737 | ||
2738 | if (hdr->p_type == PT_HP_CORE_LOADABLE | |
2739 | || hdr->p_type == PT_HP_CORE_STACK | |
2740 | || hdr->p_type == PT_HP_CORE_MMF) | |
2741 | hdr->p_type = PT_LOAD; | |
2742 | ||
2743 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, typename); | |
2744 | } | |
2745 | ||
b35d266b | 2746 | static const struct bfd_elf_special_section elf64_hppa_special_sections[] = |
2f89ff8d | 2747 | { |
0112cd26 NC |
2748 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2749 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2750 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2751 | { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2752 | { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2753 | { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2754 | { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS }, | |
2755 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2756 | }; |
2757 | ||
15bda425 JL |
2758 | /* The hash bucket size is the standard one, namely 4. */ |
2759 | ||
2760 | const struct elf_size_info hppa64_elf_size_info = | |
2761 | { | |
2762 | sizeof (Elf64_External_Ehdr), | |
2763 | sizeof (Elf64_External_Phdr), | |
2764 | sizeof (Elf64_External_Shdr), | |
2765 | sizeof (Elf64_External_Rel), | |
2766 | sizeof (Elf64_External_Rela), | |
2767 | sizeof (Elf64_External_Sym), | |
2768 | sizeof (Elf64_External_Dyn), | |
2769 | sizeof (Elf_External_Note), | |
2770 | 4, | |
2771 | 1, | |
45d6a902 | 2772 | 64, 3, |
15bda425 JL |
2773 | ELFCLASS64, EV_CURRENT, |
2774 | bfd_elf64_write_out_phdrs, | |
2775 | bfd_elf64_write_shdrs_and_ehdr, | |
2776 | bfd_elf64_write_relocs, | |
73ff0d56 | 2777 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
2778 | bfd_elf64_swap_symbol_out, |
2779 | bfd_elf64_slurp_reloc_table, | |
2780 | bfd_elf64_slurp_symbol_table, | |
2781 | bfd_elf64_swap_dyn_in, | |
2782 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
2783 | bfd_elf64_swap_reloc_in, |
2784 | bfd_elf64_swap_reloc_out, | |
2785 | bfd_elf64_swap_reloca_in, | |
2786 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
2787 | }; |
2788 | ||
2789 | #define TARGET_BIG_SYM bfd_elf64_hppa_vec | |
2790 | #define TARGET_BIG_NAME "elf64-hppa" | |
2791 | #define ELF_ARCH bfd_arch_hppa | |
2792 | #define ELF_MACHINE_CODE EM_PARISC | |
2793 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
2794 | 64M. But everything still uses 4k. */ | |
2795 | #define ELF_MAXPAGESIZE 0x1000 | |
d1036acb L |
2796 | #define ELF_OSABI ELFOSABI_HPUX |
2797 | ||
15bda425 | 2798 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
157090f7 | 2799 | #define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup |
15bda425 JL |
2800 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name |
2801 | #define elf_info_to_howto elf_hppa_info_to_howto | |
2802 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
2803 | ||
2804 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
2805 | #define elf_backend_object_p elf64_hppa_object_p | |
2806 | #define elf_backend_final_write_processing \ | |
2807 | elf_hppa_final_write_processing | |
99c79b2e | 2808 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
2809 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
2810 | ||
f0fe0e16 | 2811 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
2812 | |
2813 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
2814 | ||
2815 | #define elf_backend_create_dynamic_sections \ | |
2816 | elf64_hppa_create_dynamic_sections | |
2817 | #define elf_backend_post_process_headers elf64_hppa_post_process_headers | |
2818 | ||
74541ad4 AM |
2819 | #define elf_backend_omit_section_dynsym \ |
2820 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
15bda425 JL |
2821 | #define elf_backend_adjust_dynamic_symbol \ |
2822 | elf64_hppa_adjust_dynamic_symbol | |
2823 | ||
2824 | #define elf_backend_size_dynamic_sections \ | |
2825 | elf64_hppa_size_dynamic_sections | |
2826 | ||
2827 | #define elf_backend_finish_dynamic_symbol \ | |
2828 | elf64_hppa_finish_dynamic_symbol | |
2829 | #define elf_backend_finish_dynamic_sections \ | |
2830 | elf64_hppa_finish_dynamic_sections | |
235ecfbc NC |
2831 | #define elf_backend_grok_prstatus elf64_hppa_grok_prstatus |
2832 | #define elf_backend_grok_psinfo elf64_hppa_grok_psinfo | |
2833 | ||
15bda425 JL |
2834 | /* Stuff for the BFD linker: */ |
2835 | #define bfd_elf64_bfd_link_hash_table_create \ | |
2836 | elf64_hppa_hash_table_create | |
2837 | ||
2838 | #define elf_backend_check_relocs \ | |
2839 | elf64_hppa_check_relocs | |
2840 | ||
2841 | #define elf_backend_size_info \ | |
2842 | hppa64_elf_size_info | |
2843 | ||
2844 | #define elf_backend_additional_program_headers \ | |
2845 | elf64_hppa_additional_program_headers | |
2846 | ||
2847 | #define elf_backend_modify_segment_map \ | |
2848 | elf64_hppa_modify_segment_map | |
2849 | ||
2850 | #define elf_backend_link_output_symbol_hook \ | |
2851 | elf64_hppa_link_output_symbol_hook | |
2852 | ||
15bda425 JL |
2853 | #define elf_backend_want_got_plt 0 |
2854 | #define elf_backend_plt_readonly 0 | |
2855 | #define elf_backend_want_plt_sym 0 | |
2856 | #define elf_backend_got_header_size 0 | |
b34976b6 AM |
2857 | #define elf_backend_type_change_ok TRUE |
2858 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
2859 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
2860 | #define elf_backend_rela_normal 1 | |
29ef7005 | 2861 | #define elf_backend_special_sections elf64_hppa_special_sections |
8a696751 | 2862 | #define elf_backend_action_discarded elf_hppa_action_discarded |
d97a8924 | 2863 | #define elf_backend_section_from_phdr elf64_hppa_section_from_phdr |
15bda425 | 2864 | |
83d1651b L |
2865 | #define elf64_bed elf64_hppa_hpux_bed |
2866 | ||
15bda425 | 2867 | #include "elf64-target.h" |
d952f17a AM |
2868 | |
2869 | #undef TARGET_BIG_SYM | |
2870 | #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec | |
2871 | #undef TARGET_BIG_NAME | |
2872 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
d1036acb L |
2873 | #undef ELF_OSABI |
2874 | #define ELF_OSABI ELFOSABI_LINUX | |
2875 | #undef elf_backend_post_process_headers | |
2876 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
83d1651b L |
2877 | #undef elf64_bed |
2878 | #define elf64_bed elf64_hppa_linux_bed | |
d952f17a | 2879 | |
d952f17a | 2880 | #include "elf64-target.h" |