Commit | Line | Data |
---|---|---|
b352eebf | 1 | /* Support for HPPA 64-bit ELF |
813c8a3c | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
15bda425 | 21 | |
15bda425 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
15bda425 JL |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | #include "elf/hppa.h" | |
27 | #include "libhppa.h" | |
28 | #include "elf64-hppa.h" | |
8bc9c892 NC |
29 | |
30 | /* This is the code recommended in the autoconf documentation, almost | |
31 | verbatim. */ | |
32 | #ifndef __GNUC__ | |
33 | # if HAVE_ALLOCA_H | |
34 | # include <alloca.h> | |
35 | # else | |
36 | # ifdef _AIX | |
37 | /* Indented so that pre-ansi C compilers will ignore it, rather than | |
38 | choke on it. Some versions of AIX require this to be the first | |
39 | thing in the file. */ | |
40 | #pragma alloca | |
41 | # else | |
42 | # ifndef alloca /* predefined by HP cc +Olibcalls */ | |
43 | # if !defined (__STDC__) && !defined (__hpux) | |
44 | extern char *alloca (); | |
45 | # else | |
46 | extern void *alloca (); | |
47 | # endif /* __STDC__, __hpux */ | |
48 | # endif /* alloca */ | |
49 | # endif /* _AIX */ | |
50 | # endif /* HAVE_ALLOCA_H */ | |
d68aa3e6 DA |
51 | #else |
52 | extern void *alloca (size_t); | |
8bc9c892 NC |
53 | #endif /* __GNUC__ */ |
54 | ||
55 | ||
15bda425 JL |
56 | #define ARCH_SIZE 64 |
57 | ||
58 | #define PLT_ENTRY_SIZE 0x10 | |
59 | #define DLT_ENTRY_SIZE 0x8 | |
60 | #define OPD_ENTRY_SIZE 0x20 | |
fe8bc63d | 61 | |
15bda425 JL |
62 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
63 | ||
64 | /* The stub is supposed to load the target address and target's DP | |
65 | value out of the PLT, then do an external branch to the target | |
66 | address. | |
67 | ||
68 | LDD PLTOFF(%r27),%r1 | |
69 | BVE (%r1) | |
70 | LDD PLTOFF+8(%r27),%r27 | |
71 | ||
72 | Note that we must use the LDD with a 14 bit displacement, not the one | |
73 | with a 5 bit displacement. */ | |
74 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, | |
75 | 0x53, 0x7b, 0x00, 0x00 }; | |
76 | ||
77 | struct elf64_hppa_dyn_hash_entry | |
78 | { | |
79 | struct bfd_hash_entry root; | |
80 | ||
81 | /* Offsets for this symbol in various linker sections. */ | |
82 | bfd_vma dlt_offset; | |
83 | bfd_vma plt_offset; | |
84 | bfd_vma opd_offset; | |
85 | bfd_vma stub_offset; | |
86 | ||
edd21aca | 87 | /* The symbol table entry, if any, that this was derived from. */ |
15bda425 JL |
88 | struct elf_link_hash_entry *h; |
89 | ||
90 | /* The index of the (possibly local) symbol in the input bfd and its | |
91 | associated BFD. Needed so that we can have relocs against local | |
92 | symbols in shared libraries. */ | |
dc810e39 | 93 | long sym_indx; |
15bda425 JL |
94 | bfd *owner; |
95 | ||
96 | /* Dynamic symbols may need to have two different values. One for | |
97 | the dynamic symbol table, one for the normal symbol table. | |
98 | ||
99 | In such cases we store the symbol's real value and section | |
100 | index here so we can restore the real value before we write | |
101 | the normal symbol table. */ | |
102 | bfd_vma st_value; | |
103 | int st_shndx; | |
104 | ||
105 | /* Used to count non-got, non-plt relocations for delayed sizing | |
106 | of relocation sections. */ | |
107 | struct elf64_hppa_dyn_reloc_entry | |
108 | { | |
109 | /* Next relocation in the chain. */ | |
110 | struct elf64_hppa_dyn_reloc_entry *next; | |
111 | ||
112 | /* The type of the relocation. */ | |
113 | int type; | |
114 | ||
115 | /* The input section of the relocation. */ | |
116 | asection *sec; | |
117 | ||
118 | /* The index of the section symbol for the input section of | |
119 | the relocation. Only needed when building shared libraries. */ | |
120 | int sec_symndx; | |
121 | ||
122 | /* The offset within the input section of the relocation. */ | |
123 | bfd_vma offset; | |
124 | ||
125 | /* The addend for the relocation. */ | |
126 | bfd_vma addend; | |
127 | ||
128 | } *reloc_entries; | |
129 | ||
130 | /* Nonzero if this symbol needs an entry in one of the linker | |
131 | sections. */ | |
132 | unsigned want_dlt; | |
133 | unsigned want_plt; | |
134 | unsigned want_opd; | |
135 | unsigned want_stub; | |
136 | }; | |
137 | ||
138 | struct elf64_hppa_dyn_hash_table | |
139 | { | |
140 | struct bfd_hash_table root; | |
141 | }; | |
142 | ||
143 | struct elf64_hppa_link_hash_table | |
144 | { | |
145 | struct elf_link_hash_table root; | |
146 | ||
147 | /* Shortcuts to get to the various linker defined sections. */ | |
148 | asection *dlt_sec; | |
149 | asection *dlt_rel_sec; | |
150 | asection *plt_sec; | |
151 | asection *plt_rel_sec; | |
152 | asection *opd_sec; | |
153 | asection *opd_rel_sec; | |
154 | asection *other_rel_sec; | |
155 | ||
156 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
157 | to slide __gp into the PLT section so that we can continue to use | |
158 | single DP relative instructions to load values out of the PLT. */ | |
159 | bfd_vma gp_offset; | |
160 | ||
161 | /* Note this is not strictly correct. We should create a stub section for | |
162 | each input section with calls. The stub section should be placed before | |
163 | the section with the call. */ | |
164 | asection *stub_sec; | |
165 | ||
166 | bfd_vma text_segment_base; | |
167 | bfd_vma data_segment_base; | |
168 | ||
169 | struct elf64_hppa_dyn_hash_table dyn_hash_table; | |
170 | ||
171 | /* We build tables to map from an input section back to its | |
172 | symbol index. This is the BFD for which we currently have | |
173 | a map. */ | |
174 | bfd *section_syms_bfd; | |
175 | ||
176 | /* Array of symbol numbers for each input section attached to the | |
177 | current BFD. */ | |
178 | int *section_syms; | |
179 | }; | |
180 | ||
181 | #define elf64_hppa_hash_table(p) \ | |
182 | ((struct elf64_hppa_link_hash_table *) ((p)->hash)) | |
183 | ||
184 | typedef struct bfd_hash_entry *(*new_hash_entry_func) | |
813c8a3c | 185 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
15bda425 | 186 | |
15bda425 | 187 | static struct bfd_hash_entry *elf64_hppa_new_dyn_hash_entry |
813c8a3c DA |
188 | (struct bfd_hash_entry *entry, struct bfd_hash_table *table, |
189 | const char *string); | |
190 | ||
15bda425 | 191 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create |
813c8a3c DA |
192 | (bfd *abfd); |
193 | ||
15bda425 | 194 | static struct elf64_hppa_dyn_hash_entry *elf64_hppa_dyn_hash_lookup |
813c8a3c DA |
195 | (struct elf64_hppa_dyn_hash_table *table, const char *string, |
196 | bfd_boolean create, bfd_boolean copy); | |
197 | ||
15bda425 | 198 | static void elf64_hppa_dyn_hash_traverse |
813c8a3c DA |
199 | (struct elf64_hppa_dyn_hash_table *table, |
200 | bfd_boolean (*func) (struct elf64_hppa_dyn_hash_entry *, void *), | |
201 | void *info); | |
15bda425 JL |
202 | |
203 | static const char *get_dyn_name | |
813c8a3c DA |
204 | (bfd *, struct elf_link_hash_entry *, |
205 | const Elf_Internal_Rela *, char **, size_t *); | |
15bda425 | 206 | |
15bda425 JL |
207 | /* This must follow the definitions of the various derived linker |
208 | hash tables and shared functions. */ | |
209 | #include "elf-hppa.h" | |
210 | ||
b34976b6 | 211 | static bfd_boolean elf64_hppa_object_p |
813c8a3c | 212 | (bfd *); |
15bda425 | 213 | |
15bda425 | 214 | static void elf64_hppa_post_process_headers |
813c8a3c | 215 | (bfd *, struct bfd_link_info *); |
15bda425 | 216 | |
b34976b6 | 217 | static bfd_boolean elf64_hppa_create_dynamic_sections |
813c8a3c | 218 | (bfd *, struct bfd_link_info *); |
15bda425 | 219 | |
b34976b6 | 220 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
813c8a3c | 221 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
15bda425 | 222 | |
b34976b6 | 223 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
813c8a3c | 224 | (struct elf_link_hash_entry *, void *); |
47b7c2db | 225 | |
b34976b6 | 226 | static bfd_boolean elf64_hppa_size_dynamic_sections |
813c8a3c | 227 | (bfd *, struct bfd_link_info *); |
15bda425 | 228 | |
b34976b6 | 229 | static bfd_boolean elf64_hppa_link_output_symbol_hook |
813c8a3c DA |
230 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
231 | asection *, struct elf_link_hash_entry *); | |
99c79b2e | 232 | |
b34976b6 | 233 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
813c8a3c DA |
234 | (bfd *, struct bfd_link_info *, |
235 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
fe8bc63d | 236 | |
5ac81c74 | 237 | static enum elf_reloc_type_class elf64_hppa_reloc_type_class |
813c8a3c | 238 | (const Elf_Internal_Rela *); |
5ac81c74 | 239 | |
b34976b6 | 240 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
813c8a3c | 241 | (bfd *, struct bfd_link_info *); |
15bda425 | 242 | |
b34976b6 | 243 | static bfd_boolean elf64_hppa_check_relocs |
813c8a3c DA |
244 | (bfd *, struct bfd_link_info *, |
245 | asection *, const Elf_Internal_Rela *); | |
15bda425 | 246 | |
b34976b6 | 247 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
813c8a3c | 248 | (struct elf_link_hash_entry *, struct bfd_link_info *); |
15bda425 | 249 | |
b34976b6 | 250 | static bfd_boolean elf64_hppa_mark_exported_functions |
813c8a3c | 251 | (struct elf_link_hash_entry *, void *); |
15bda425 | 252 | |
b34976b6 | 253 | static bfd_boolean elf64_hppa_finalize_opd |
813c8a3c | 254 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 255 | |
b34976b6 | 256 | static bfd_boolean elf64_hppa_finalize_dlt |
813c8a3c | 257 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 258 | |
b34976b6 | 259 | static bfd_boolean allocate_global_data_dlt |
813c8a3c | 260 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 261 | |
b34976b6 | 262 | static bfd_boolean allocate_global_data_plt |
813c8a3c | 263 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 264 | |
b34976b6 | 265 | static bfd_boolean allocate_global_data_stub |
813c8a3c | 266 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 267 | |
b34976b6 | 268 | static bfd_boolean allocate_global_data_opd |
813c8a3c | 269 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 270 | |
b34976b6 | 271 | static bfd_boolean get_reloc_section |
813c8a3c | 272 | (bfd *, struct elf64_hppa_link_hash_table *, asection *); |
15bda425 | 273 | |
b34976b6 | 274 | static bfd_boolean count_dyn_reloc |
813c8a3c DA |
275 | (bfd *, struct elf64_hppa_dyn_hash_entry *, |
276 | int, asection *, int, bfd_vma, bfd_vma); | |
15bda425 | 277 | |
b34976b6 | 278 | static bfd_boolean allocate_dynrel_entries |
813c8a3c | 279 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 280 | |
b34976b6 | 281 | static bfd_boolean elf64_hppa_finalize_dynreloc |
813c8a3c | 282 | (struct elf64_hppa_dyn_hash_entry *, void *); |
15bda425 | 283 | |
b34976b6 | 284 | static bfd_boolean get_opd |
813c8a3c | 285 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 286 | |
b34976b6 | 287 | static bfd_boolean get_plt |
813c8a3c | 288 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 289 | |
b34976b6 | 290 | static bfd_boolean get_dlt |
813c8a3c | 291 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 292 | |
b34976b6 | 293 | static bfd_boolean get_stub |
813c8a3c | 294 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 295 | |
3fab46d0 | 296 | static int elf64_hppa_elf_get_symbol_type |
813c8a3c | 297 | (Elf_Internal_Sym *, int); |
3fab46d0 | 298 | |
b34976b6 | 299 | static bfd_boolean |
66eb6687 AM |
300 | elf64_hppa_dyn_hash_table_init (struct elf64_hppa_dyn_hash_table *ht, |
301 | bfd *abfd ATTRIBUTE_UNUSED, | |
302 | new_hash_entry_func new, | |
303 | unsigned int entsize) | |
15bda425 | 304 | { |
fe8bc63d | 305 | memset (ht, 0, sizeof (*ht)); |
66eb6687 | 306 | return bfd_hash_table_init (&ht->root, new, entsize); |
15bda425 JL |
307 | } |
308 | ||
309 | static struct bfd_hash_entry* | |
813c8a3c DA |
310 | elf64_hppa_new_dyn_hash_entry (struct bfd_hash_entry *entry, |
311 | struct bfd_hash_table *table, | |
312 | const char *string) | |
15bda425 JL |
313 | { |
314 | struct elf64_hppa_dyn_hash_entry *ret; | |
315 | ret = (struct elf64_hppa_dyn_hash_entry *) entry; | |
316 | ||
317 | /* Allocate the structure if it has not already been allocated by a | |
318 | subclass. */ | |
319 | if (!ret) | |
320 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
321 | ||
322 | if (!ret) | |
323 | return 0; | |
324 | ||
15bda425 JL |
325 | /* Call the allocation method of the superclass. */ |
326 | ret = ((struct elf64_hppa_dyn_hash_entry *) | |
327 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
328 | ||
336549c1 AM |
329 | /* Initialize our local data. All zeros. */ |
330 | memset (&ret->dlt_offset, 0, | |
331 | (sizeof (struct elf64_hppa_dyn_hash_entry) | |
332 | - offsetof (struct elf64_hppa_dyn_hash_entry, dlt_offset))); | |
333 | ||
15bda425 JL |
334 | return &ret->root; |
335 | } | |
336 | ||
337 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
338 | derived hash table to keep information specific to the PA ElF | |
339 | linker (without using static variables). */ | |
340 | ||
341 | static struct bfd_link_hash_table* | |
813c8a3c | 342 | elf64_hppa_hash_table_create (bfd *abfd) |
15bda425 JL |
343 | { |
344 | struct elf64_hppa_link_hash_table *ret; | |
345 | ||
dc810e39 | 346 | ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret)); |
15bda425 JL |
347 | if (!ret) |
348 | return 0; | |
349 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
66eb6687 AM |
350 | _bfd_elf_link_hash_newfunc, |
351 | sizeof (struct elf_link_hash_entry))) | |
15bda425 JL |
352 | { |
353 | bfd_release (abfd, ret); | |
354 | return 0; | |
355 | } | |
356 | ||
357 | if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd, | |
66eb6687 AM |
358 | elf64_hppa_new_dyn_hash_entry, |
359 | sizeof (struct elf64_hppa_dyn_hash_entry))) | |
15bda425 JL |
360 | return 0; |
361 | return &ret->root.root; | |
362 | } | |
363 | ||
364 | /* Look up an entry in a PA64 ELF linker hash table. */ | |
365 | ||
366 | static struct elf64_hppa_dyn_hash_entry * | |
813c8a3c DA |
367 | elf64_hppa_dyn_hash_lookup(struct elf64_hppa_dyn_hash_table *table, |
368 | const char *string, | |
369 | bfd_boolean create, | |
370 | bfd_boolean copy) | |
15bda425 JL |
371 | { |
372 | return ((struct elf64_hppa_dyn_hash_entry *) | |
373 | bfd_hash_lookup (&table->root, string, create, copy)); | |
374 | } | |
375 | ||
376 | /* Traverse a PA64 ELF linker hash table. */ | |
377 | ||
378 | static void | |
813c8a3c DA |
379 | elf64_hppa_dyn_hash_traverse (struct elf64_hppa_dyn_hash_table *table, |
380 | bfd_boolean (*func) (struct elf64_hppa_dyn_hash_entry *, void *), | |
381 | void *info) | |
15bda425 | 382 | { |
813c8a3c DA |
383 | bfd_hash_traverse (&table->root, |
384 | (bfd_boolean (*) (struct bfd_hash_entry *, void *)) func, | |
385 | info); | |
15bda425 JL |
386 | } |
387 | \f | |
388 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. | |
389 | ||
390 | Additionally we set the default architecture and machine. */ | |
b34976b6 | 391 | static bfd_boolean |
813c8a3c | 392 | elf64_hppa_object_p (bfd *abfd) |
15bda425 | 393 | { |
24a5e751 L |
394 | Elf_Internal_Ehdr * i_ehdrp; |
395 | unsigned int flags; | |
d9634ba1 | 396 | |
24a5e751 L |
397 | i_ehdrp = elf_elfheader (abfd); |
398 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) | |
399 | { | |
6c21aa76 NC |
400 | /* GCC on hppa-linux produces binaries with OSABI=Linux, |
401 | but the kernel produces corefiles with OSABI=SysV. */ | |
d97a8924 DA |
402 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX |
403 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 404 | return FALSE; |
24a5e751 L |
405 | } |
406 | else | |
407 | { | |
d97a8924 DA |
408 | /* HPUX produces binaries with OSABI=HPUX, |
409 | but the kernel produces corefiles with OSABI=SysV. */ | |
410 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX | |
411 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 412 | return FALSE; |
24a5e751 L |
413 | } |
414 | ||
415 | flags = i_ehdrp->e_flags; | |
d9634ba1 AM |
416 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
417 | { | |
418 | case EFA_PARISC_1_0: | |
419 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
420 | case EFA_PARISC_1_1: | |
421 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
422 | case EFA_PARISC_2_0: | |
d97a8924 DA |
423 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) |
424 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
425 | else | |
426 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
d9634ba1 AM |
427 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: |
428 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
429 | } | |
430 | /* Don't be fussy. */ | |
b34976b6 | 431 | return TRUE; |
15bda425 JL |
432 | } |
433 | ||
434 | /* Given section type (hdr->sh_type), return a boolean indicating | |
435 | whether or not the section is an elf64-hppa specific section. */ | |
b34976b6 | 436 | static bfd_boolean |
6dc132d9 L |
437 | elf64_hppa_section_from_shdr (bfd *abfd, |
438 | Elf_Internal_Shdr *hdr, | |
439 | const char *name, | |
440 | int shindex) | |
15bda425 JL |
441 | { |
442 | asection *newsect; | |
443 | ||
444 | switch (hdr->sh_type) | |
445 | { | |
446 | case SHT_PARISC_EXT: | |
447 | if (strcmp (name, ".PARISC.archext") != 0) | |
b34976b6 | 448 | return FALSE; |
15bda425 JL |
449 | break; |
450 | case SHT_PARISC_UNWIND: | |
451 | if (strcmp (name, ".PARISC.unwind") != 0) | |
b34976b6 | 452 | return FALSE; |
15bda425 JL |
453 | break; |
454 | case SHT_PARISC_DOC: | |
455 | case SHT_PARISC_ANNOT: | |
456 | default: | |
b34976b6 | 457 | return FALSE; |
15bda425 JL |
458 | } |
459 | ||
6dc132d9 | 460 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 461 | return FALSE; |
15bda425 JL |
462 | newsect = hdr->bfd_section; |
463 | ||
b34976b6 | 464 | return TRUE; |
15bda425 JL |
465 | } |
466 | ||
15bda425 | 467 | /* Construct a string for use in the elf64_hppa_dyn_hash_table. The |
fe8bc63d | 468 | name describes what was once potentially anonymous memory. We |
15bda425 JL |
469 | allocate memory as necessary, possibly reusing PBUF/PLEN. */ |
470 | ||
471 | static const char * | |
813c8a3c DA |
472 | get_dyn_name (bfd *abfd, |
473 | struct elf_link_hash_entry *h, | |
474 | const Elf_Internal_Rela *rel, | |
475 | char **pbuf, | |
476 | size_t *plen) | |
15bda425 | 477 | { |
d63b5ed9 | 478 | asection *sec = abfd->sections; |
15bda425 JL |
479 | size_t nlen, tlen; |
480 | char *buf; | |
481 | size_t len; | |
482 | ||
483 | if (h && rel->r_addend == 0) | |
484 | return h->root.root.string; | |
485 | ||
486 | if (h) | |
487 | nlen = strlen (h->root.root.string); | |
488 | else | |
0ba2a60e AM |
489 | nlen = 8 + 1 + sizeof (rel->r_info) * 2 - 8; |
490 | tlen = nlen + 1 + sizeof (rel->r_addend) * 2 + 1; | |
15bda425 JL |
491 | |
492 | len = *plen; | |
493 | buf = *pbuf; | |
494 | if (len < tlen) | |
495 | { | |
496 | if (buf) | |
497 | free (buf); | |
498 | *pbuf = buf = malloc (tlen); | |
499 | *plen = len = tlen; | |
500 | if (!buf) | |
501 | return NULL; | |
502 | } | |
503 | ||
504 | if (h) | |
505 | { | |
506 | memcpy (buf, h->root.root.string, nlen); | |
0ba2a60e | 507 | buf[nlen++] = '+'; |
15bda425 JL |
508 | sprintf_vma (buf + nlen, rel->r_addend); |
509 | } | |
510 | else | |
511 | { | |
0ba2a60e AM |
512 | nlen = sprintf (buf, "%x:%lx", |
513 | sec->id & 0xffffffff, | |
0af1713e | 514 | (unsigned long) ELF64_R_SYM (rel->r_info)); |
15bda425 JL |
515 | if (rel->r_addend) |
516 | { | |
517 | buf[nlen++] = '+'; | |
518 | sprintf_vma (buf + nlen, rel->r_addend); | |
519 | } | |
520 | } | |
521 | ||
522 | return buf; | |
523 | } | |
524 | ||
525 | /* SEC is a section containing relocs for an input BFD when linking; return | |
526 | a suitable section for holding relocs in the output BFD for a link. */ | |
527 | ||
b34976b6 | 528 | static bfd_boolean |
813c8a3c DA |
529 | get_reloc_section (bfd *abfd, |
530 | struct elf64_hppa_link_hash_table *hppa_info, | |
531 | asection *sec) | |
15bda425 JL |
532 | { |
533 | const char *srel_name; | |
534 | asection *srel; | |
535 | bfd *dynobj; | |
536 | ||
537 | srel_name = (bfd_elf_string_from_elf_section | |
538 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
539 | elf_section_data(sec)->rel_hdr.sh_name)); | |
540 | if (srel_name == NULL) | |
b34976b6 | 541 | return FALSE; |
15bda425 | 542 | |
0112cd26 | 543 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") |
15bda425 | 544 | && strcmp (bfd_get_section_name (abfd, sec), |
0112cd26 NC |
545 | srel_name + 5) == 0) |
546 | || (CONST_STRNEQ (srel_name, ".rel") | |
15bda425 | 547 | && strcmp (bfd_get_section_name (abfd, sec), |
0112cd26 | 548 | srel_name + 4) == 0)); |
15bda425 JL |
549 | |
550 | dynobj = hppa_info->root.dynobj; | |
551 | if (!dynobj) | |
552 | hppa_info->root.dynobj = dynobj = abfd; | |
553 | ||
554 | srel = bfd_get_section_by_name (dynobj, srel_name); | |
555 | if (srel == NULL) | |
556 | { | |
3496cb2a L |
557 | srel = bfd_make_section_with_flags (dynobj, srel_name, |
558 | (SEC_ALLOC | |
559 | | SEC_LOAD | |
560 | | SEC_HAS_CONTENTS | |
561 | | SEC_IN_MEMORY | |
562 | | SEC_LINKER_CREATED | |
563 | | SEC_READONLY)); | |
15bda425 | 564 | if (srel == NULL |
15bda425 | 565 | || !bfd_set_section_alignment (dynobj, srel, 3)) |
b34976b6 | 566 | return FALSE; |
15bda425 JL |
567 | } |
568 | ||
569 | hppa_info->other_rel_sec = srel; | |
b34976b6 | 570 | return TRUE; |
15bda425 JL |
571 | } |
572 | ||
fe8bc63d | 573 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
15bda425 JL |
574 | |
575 | We use this to keep a record of all the FPTR relocations against a | |
576 | particular symbol so that we can create FPTR relocations in the | |
577 | output file. */ | |
578 | ||
b34976b6 | 579 | static bfd_boolean |
813c8a3c DA |
580 | count_dyn_reloc (bfd *abfd, |
581 | struct elf64_hppa_dyn_hash_entry *dyn_h, | |
582 | int type, | |
583 | asection *sec, | |
584 | int sec_symndx, | |
585 | bfd_vma offset, | |
586 | bfd_vma addend) | |
15bda425 JL |
587 | { |
588 | struct elf64_hppa_dyn_reloc_entry *rent; | |
589 | ||
590 | rent = (struct elf64_hppa_dyn_reloc_entry *) | |
dc810e39 | 591 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
15bda425 | 592 | if (!rent) |
b34976b6 | 593 | return FALSE; |
15bda425 JL |
594 | |
595 | rent->next = dyn_h->reloc_entries; | |
596 | rent->type = type; | |
597 | rent->sec = sec; | |
598 | rent->sec_symndx = sec_symndx; | |
599 | rent->offset = offset; | |
600 | rent->addend = addend; | |
601 | dyn_h->reloc_entries = rent; | |
602 | ||
b34976b6 | 603 | return TRUE; |
15bda425 JL |
604 | } |
605 | ||
606 | /* Scan the RELOCS and record the type of dynamic entries that each | |
607 | referenced symbol needs. */ | |
608 | ||
b34976b6 | 609 | static bfd_boolean |
813c8a3c DA |
610 | elf64_hppa_check_relocs (bfd *abfd, |
611 | struct bfd_link_info *info, | |
612 | asection *sec, | |
613 | const Elf_Internal_Rela *relocs) | |
15bda425 JL |
614 | { |
615 | struct elf64_hppa_link_hash_table *hppa_info; | |
616 | const Elf_Internal_Rela *relend; | |
617 | Elf_Internal_Shdr *symtab_hdr; | |
618 | const Elf_Internal_Rela *rel; | |
619 | asection *dlt, *plt, *stubs; | |
620 | char *buf; | |
621 | size_t buf_len; | |
4fbb74a6 | 622 | unsigned int sec_symndx; |
15bda425 | 623 | |
1049f94e | 624 | if (info->relocatable) |
b34976b6 | 625 | return TRUE; |
15bda425 JL |
626 | |
627 | /* If this is the first dynamic object found in the link, create | |
628 | the special sections required for dynamic linking. */ | |
629 | if (! elf_hash_table (info)->dynamic_sections_created) | |
630 | { | |
45d6a902 | 631 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
b34976b6 | 632 | return FALSE; |
15bda425 JL |
633 | } |
634 | ||
635 | hppa_info = elf64_hppa_hash_table (info); | |
636 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
637 | ||
638 | /* If necessary, build a new table holding section symbols indices | |
6cdc0ccc | 639 | for this BFD. */ |
fe8bc63d | 640 | |
15bda425 JL |
641 | if (info->shared && hppa_info->section_syms_bfd != abfd) |
642 | { | |
832d951b | 643 | unsigned long i; |
9ad5cbcf | 644 | unsigned int highest_shndx; |
6cdc0ccc AM |
645 | Elf_Internal_Sym *local_syms = NULL; |
646 | Elf_Internal_Sym *isym, *isymend; | |
dc810e39 | 647 | bfd_size_type amt; |
15bda425 JL |
648 | |
649 | /* We're done with the old cache of section index to section symbol | |
650 | index information. Free it. | |
651 | ||
652 | ?!? Note we leak the last section_syms array. Presumably we | |
653 | could free it in one of the later routines in this file. */ | |
654 | if (hppa_info->section_syms) | |
655 | free (hppa_info->section_syms); | |
656 | ||
6cdc0ccc AM |
657 | /* Read this BFD's local symbols. */ |
658 | if (symtab_hdr->sh_info != 0) | |
47b7c2db | 659 | { |
6cdc0ccc AM |
660 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
661 | if (local_syms == NULL) | |
662 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
663 | symtab_hdr->sh_info, 0, | |
664 | NULL, NULL, NULL); | |
665 | if (local_syms == NULL) | |
b34976b6 | 666 | return FALSE; |
9ad5cbcf AM |
667 | } |
668 | ||
6cdc0ccc | 669 | /* Record the highest section index referenced by the local symbols. */ |
15bda425 | 670 | highest_shndx = 0; |
6cdc0ccc AM |
671 | isymend = local_syms + symtab_hdr->sh_info; |
672 | for (isym = local_syms; isym < isymend; isym++) | |
15bda425 | 673 | { |
4fbb74a6 AM |
674 | if (isym->st_shndx > highest_shndx |
675 | && isym->st_shndx < SHN_LORESERVE) | |
15bda425 JL |
676 | highest_shndx = isym->st_shndx; |
677 | } | |
678 | ||
15bda425 JL |
679 | /* Allocate an array to hold the section index to section symbol index |
680 | mapping. Bump by one since we start counting at zero. */ | |
681 | highest_shndx++; | |
dc810e39 AM |
682 | amt = highest_shndx; |
683 | amt *= sizeof (int); | |
684 | hppa_info->section_syms = (int *) bfd_malloc (amt); | |
15bda425 JL |
685 | |
686 | /* Now walk the local symbols again. If we find a section symbol, | |
687 | record the index of the symbol into the section_syms array. */ | |
6cdc0ccc | 688 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
15bda425 JL |
689 | { |
690 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
691 | hppa_info->section_syms[isym->st_shndx] = i; | |
692 | } | |
693 | ||
6cdc0ccc AM |
694 | /* We are finished with the local symbols. */ |
695 | if (local_syms != NULL | |
696 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
697 | { | |
698 | if (! info->keep_memory) | |
699 | free (local_syms); | |
700 | else | |
701 | { | |
702 | /* Cache the symbols for elf_link_input_bfd. */ | |
703 | symtab_hdr->contents = (unsigned char *) local_syms; | |
704 | } | |
705 | } | |
15bda425 JL |
706 | |
707 | /* Record which BFD we built the section_syms mapping for. */ | |
708 | hppa_info->section_syms_bfd = abfd; | |
709 | } | |
710 | ||
711 | /* Record the symbol index for this input section. We may need it for | |
712 | relocations when building shared libraries. When not building shared | |
713 | libraries this value is never really used, but assign it to zero to | |
714 | prevent out of bounds memory accesses in other routines. */ | |
715 | if (info->shared) | |
716 | { | |
717 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
718 | ||
719 | /* If we did not find a section symbol for this section, then | |
720 | something went terribly wrong above. */ | |
4fbb74a6 | 721 | if (sec_symndx == SHN_BAD) |
b34976b6 | 722 | return FALSE; |
15bda425 | 723 | |
4fbb74a6 AM |
724 | if (sec_symndx < SHN_LORESERVE) |
725 | sec_symndx = hppa_info->section_syms[sec_symndx]; | |
726 | else | |
727 | sec_symndx = 0; | |
15bda425 JL |
728 | } |
729 | else | |
730 | sec_symndx = 0; | |
fe8bc63d | 731 | |
15bda425 JL |
732 | dlt = plt = stubs = NULL; |
733 | buf = NULL; | |
734 | buf_len = 0; | |
735 | ||
736 | relend = relocs + sec->reloc_count; | |
737 | for (rel = relocs; rel < relend; ++rel) | |
738 | { | |
560e09e9 NC |
739 | enum |
740 | { | |
741 | NEED_DLT = 1, | |
742 | NEED_PLT = 2, | |
743 | NEED_STUB = 4, | |
744 | NEED_OPD = 8, | |
745 | NEED_DYNREL = 16, | |
746 | }; | |
15bda425 JL |
747 | |
748 | struct elf_link_hash_entry *h = NULL; | |
749 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
750 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
751 | int need_entry; | |
752 | const char *addr_name; | |
b34976b6 | 753 | bfd_boolean maybe_dynamic; |
15bda425 JL |
754 | int dynrel_type = R_PARISC_NONE; |
755 | static reloc_howto_type *howto; | |
756 | ||
757 | if (r_symndx >= symtab_hdr->sh_info) | |
758 | { | |
759 | /* We're dealing with a global symbol -- find its hash entry | |
760 | and mark it as being referenced. */ | |
761 | long indx = r_symndx - symtab_hdr->sh_info; | |
762 | h = elf_sym_hashes (abfd)[indx]; | |
763 | while (h->root.type == bfd_link_hash_indirect | |
764 | || h->root.type == bfd_link_hash_warning) | |
765 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
766 | ||
f5385ebf | 767 | h->ref_regular = 1; |
15bda425 JL |
768 | } |
769 | ||
770 | /* We can only get preliminary data on whether a symbol is | |
771 | locally or externally defined, as not all of the input files | |
772 | have yet been processed. Do something with what we know, as | |
773 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 774 | maybe_dynamic = FALSE; |
671bae9c | 775 | if (h && ((info->shared |
f5385ebf AM |
776 | && (!info->symbolic |
777 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
778 | || !h->def_regular | |
15bda425 | 779 | || h->root.type == bfd_link_hash_defweak)) |
b34976b6 | 780 | maybe_dynamic = TRUE; |
15bda425 JL |
781 | |
782 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); | |
783 | need_entry = 0; | |
784 | switch (howto->type) | |
785 | { | |
786 | /* These are simple indirect references to symbols through the | |
787 | DLT. We need to create a DLT entry for any symbols which | |
788 | appears in a DLTIND relocation. */ | |
789 | case R_PARISC_DLTIND21L: | |
790 | case R_PARISC_DLTIND14R: | |
791 | case R_PARISC_DLTIND14F: | |
792 | case R_PARISC_DLTIND14WR: | |
793 | case R_PARISC_DLTIND14DR: | |
794 | need_entry = NEED_DLT; | |
795 | break; | |
796 | ||
797 | /* ?!? These need a DLT entry. But I have no idea what to do with | |
798 | the "link time TP value. */ | |
799 | case R_PARISC_LTOFF_TP21L: | |
800 | case R_PARISC_LTOFF_TP14R: | |
801 | case R_PARISC_LTOFF_TP14F: | |
802 | case R_PARISC_LTOFF_TP64: | |
803 | case R_PARISC_LTOFF_TP14WR: | |
804 | case R_PARISC_LTOFF_TP14DR: | |
805 | case R_PARISC_LTOFF_TP16F: | |
806 | case R_PARISC_LTOFF_TP16WF: | |
807 | case R_PARISC_LTOFF_TP16DF: | |
808 | need_entry = NEED_DLT; | |
809 | break; | |
810 | ||
811 | /* These are function calls. Depending on their precise target we | |
812 | may need to make a stub for them. The stub uses the PLT, so we | |
813 | need to create PLT entries for these symbols too. */ | |
832d951b | 814 | case R_PARISC_PCREL12F: |
15bda425 JL |
815 | case R_PARISC_PCREL17F: |
816 | case R_PARISC_PCREL22F: | |
817 | case R_PARISC_PCREL32: | |
818 | case R_PARISC_PCREL64: | |
819 | case R_PARISC_PCREL21L: | |
820 | case R_PARISC_PCREL17R: | |
821 | case R_PARISC_PCREL17C: | |
822 | case R_PARISC_PCREL14R: | |
823 | case R_PARISC_PCREL14F: | |
824 | case R_PARISC_PCREL22C: | |
825 | case R_PARISC_PCREL14WR: | |
826 | case R_PARISC_PCREL14DR: | |
827 | case R_PARISC_PCREL16F: | |
828 | case R_PARISC_PCREL16WF: | |
829 | case R_PARISC_PCREL16DF: | |
830 | need_entry = (NEED_PLT | NEED_STUB); | |
831 | break; | |
832 | ||
833 | case R_PARISC_PLTOFF21L: | |
834 | case R_PARISC_PLTOFF14R: | |
835 | case R_PARISC_PLTOFF14F: | |
836 | case R_PARISC_PLTOFF14WR: | |
837 | case R_PARISC_PLTOFF14DR: | |
838 | case R_PARISC_PLTOFF16F: | |
839 | case R_PARISC_PLTOFF16WF: | |
840 | case R_PARISC_PLTOFF16DF: | |
841 | need_entry = (NEED_PLT); | |
842 | break; | |
843 | ||
844 | case R_PARISC_DIR64: | |
845 | if (info->shared || maybe_dynamic) | |
846 | need_entry = (NEED_DYNREL); | |
847 | dynrel_type = R_PARISC_DIR64; | |
848 | break; | |
849 | ||
850 | /* This is an indirect reference through the DLT to get the address | |
851 | of a OPD descriptor. Thus we need to make a DLT entry that points | |
852 | to an OPD entry. */ | |
853 | case R_PARISC_LTOFF_FPTR21L: | |
854 | case R_PARISC_LTOFF_FPTR14R: | |
855 | case R_PARISC_LTOFF_FPTR14WR: | |
856 | case R_PARISC_LTOFF_FPTR14DR: | |
857 | case R_PARISC_LTOFF_FPTR32: | |
858 | case R_PARISC_LTOFF_FPTR64: | |
859 | case R_PARISC_LTOFF_FPTR16F: | |
860 | case R_PARISC_LTOFF_FPTR16WF: | |
861 | case R_PARISC_LTOFF_FPTR16DF: | |
862 | if (info->shared || maybe_dynamic) | |
863 | need_entry = (NEED_DLT | NEED_OPD); | |
864 | else | |
865 | need_entry = (NEED_DLT | NEED_OPD); | |
866 | dynrel_type = R_PARISC_FPTR64; | |
867 | break; | |
868 | ||
869 | /* This is a simple OPD entry. */ | |
870 | case R_PARISC_FPTR64: | |
871 | if (info->shared || maybe_dynamic) | |
872 | need_entry = (NEED_OPD | NEED_DYNREL); | |
873 | else | |
874 | need_entry = (NEED_OPD); | |
875 | dynrel_type = R_PARISC_FPTR64; | |
876 | break; | |
877 | ||
878 | /* Add more cases as needed. */ | |
879 | } | |
880 | ||
881 | if (!need_entry) | |
882 | continue; | |
883 | ||
884 | /* Collect a canonical name for this address. */ | |
d63b5ed9 | 885 | addr_name = get_dyn_name (abfd, h, rel, &buf, &buf_len); |
15bda425 JL |
886 | |
887 | /* Collect the canonical entry data for this address. */ | |
888 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 889 | addr_name, TRUE, TRUE); |
15bda425 JL |
890 | BFD_ASSERT (dyn_h); |
891 | ||
892 | /* Stash away enough information to be able to find this symbol | |
893 | regardless of whether or not it is local or global. */ | |
894 | dyn_h->h = h; | |
895 | dyn_h->owner = abfd; | |
896 | dyn_h->sym_indx = r_symndx; | |
897 | ||
898 | /* ?!? We may need to do some error checking in here. */ | |
899 | /* Create what's needed. */ | |
900 | if (need_entry & NEED_DLT) | |
901 | { | |
902 | if (! hppa_info->dlt_sec | |
903 | && ! get_dlt (abfd, info, hppa_info)) | |
904 | goto err_out; | |
905 | dyn_h->want_dlt = 1; | |
906 | } | |
907 | ||
908 | if (need_entry & NEED_PLT) | |
909 | { | |
910 | if (! hppa_info->plt_sec | |
911 | && ! get_plt (abfd, info, hppa_info)) | |
912 | goto err_out; | |
913 | dyn_h->want_plt = 1; | |
914 | } | |
915 | ||
916 | if (need_entry & NEED_STUB) | |
917 | { | |
918 | if (! hppa_info->stub_sec | |
919 | && ! get_stub (abfd, info, hppa_info)) | |
920 | goto err_out; | |
921 | dyn_h->want_stub = 1; | |
922 | } | |
923 | ||
924 | if (need_entry & NEED_OPD) | |
925 | { | |
926 | if (! hppa_info->opd_sec | |
927 | && ! get_opd (abfd, info, hppa_info)) | |
928 | goto err_out; | |
929 | ||
930 | dyn_h->want_opd = 1; | |
931 | ||
932 | /* FPTRs are not allocated by the dynamic linker for PA64, though | |
933 | it is possible that will change in the future. */ | |
fe8bc63d | 934 | |
15bda425 JL |
935 | /* This could be a local function that had its address taken, in |
936 | which case H will be NULL. */ | |
937 | if (h) | |
f5385ebf | 938 | h->needs_plt = 1; |
15bda425 JL |
939 | } |
940 | ||
941 | /* Add a new dynamic relocation to the chain of dynamic | |
942 | relocations for this symbol. */ | |
943 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
944 | { | |
945 | if (! hppa_info->other_rel_sec | |
946 | && ! get_reloc_section (abfd, hppa_info, sec)) | |
947 | goto err_out; | |
948 | ||
949 | if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec, | |
950 | sec_symndx, rel->r_offset, rel->r_addend)) | |
951 | goto err_out; | |
952 | ||
953 | /* If we are building a shared library and we just recorded | |
954 | a dynamic R_PARISC_FPTR64 relocation, then make sure the | |
955 | section symbol for this section ends up in the dynamic | |
956 | symbol table. */ | |
957 | if (info->shared && dynrel_type == R_PARISC_FPTR64 | |
c152c796 | 958 | && ! (bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 959 | (info, abfd, sec_symndx))) |
b34976b6 | 960 | return FALSE; |
15bda425 JL |
961 | } |
962 | } | |
963 | ||
964 | if (buf) | |
965 | free (buf); | |
b34976b6 | 966 | return TRUE; |
15bda425 JL |
967 | |
968 | err_out: | |
969 | if (buf) | |
970 | free (buf); | |
b34976b6 | 971 | return FALSE; |
15bda425 JL |
972 | } |
973 | ||
974 | struct elf64_hppa_allocate_data | |
975 | { | |
976 | struct bfd_link_info *info; | |
977 | bfd_size_type ofs; | |
978 | }; | |
979 | ||
980 | /* Should we do dynamic things to this symbol? */ | |
981 | ||
b34976b6 | 982 | static bfd_boolean |
813c8a3c DA |
983 | elf64_hppa_dynamic_symbol_p (struct elf_link_hash_entry *h, |
984 | struct bfd_link_info *info) | |
15bda425 | 985 | { |
986a241f RH |
986 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
987 | and relocations that retrieve a function descriptor? Assume the | |
988 | worst for now. */ | |
989 | if (_bfd_elf_dynamic_symbol_p (h, info, 1)) | |
990 | { | |
991 | /* ??? Why is this here and not elsewhere is_local_label_name. */ | |
992 | if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$') | |
993 | return FALSE; | |
15bda425 | 994 | |
986a241f RH |
995 | return TRUE; |
996 | } | |
997 | else | |
b34976b6 | 998 | return FALSE; |
15bda425 JL |
999 | } |
1000 | ||
4cc11e76 | 1001 | /* Mark all functions exported by this file so that we can later allocate |
15bda425 JL |
1002 | entries in .opd for them. */ |
1003 | ||
b34976b6 | 1004 | static bfd_boolean |
813c8a3c DA |
1005 | elf64_hppa_mark_exported_functions (struct elf_link_hash_entry *h, |
1006 | void *data) | |
15bda425 JL |
1007 | { |
1008 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
1009 | struct elf64_hppa_link_hash_table *hppa_info; | |
1010 | ||
1011 | hppa_info = elf64_hppa_hash_table (info); | |
1012 | ||
e92d460e AM |
1013 | if (h->root.type == bfd_link_hash_warning) |
1014 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1015 | ||
15bda425 JL |
1016 | if (h |
1017 | && (h->root.type == bfd_link_hash_defined | |
1018 | || h->root.type == bfd_link_hash_defweak) | |
1019 | && h->root.u.def.section->output_section != NULL | |
1020 | && h->type == STT_FUNC) | |
1021 | { | |
1022 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1023 | ||
1024 | /* Add this symbol to the PA64 linker hash table. */ | |
1025 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1026 | h->root.root.string, TRUE, TRUE); |
15bda425 JL |
1027 | BFD_ASSERT (dyn_h); |
1028 | dyn_h->h = h; | |
1029 | ||
1030 | if (! hppa_info->opd_sec | |
1031 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) | |
b34976b6 | 1032 | return FALSE; |
15bda425 JL |
1033 | |
1034 | dyn_h->want_opd = 1; | |
832d951b AM |
1035 | /* Put a flag here for output_symbol_hook. */ |
1036 | dyn_h->st_shndx = -1; | |
f5385ebf | 1037 | h->needs_plt = 1; |
15bda425 JL |
1038 | } |
1039 | ||
b34976b6 | 1040 | return TRUE; |
15bda425 JL |
1041 | } |
1042 | ||
1043 | /* Allocate space for a DLT entry. */ | |
1044 | ||
b34976b6 | 1045 | static bfd_boolean |
813c8a3c DA |
1046 | allocate_global_data_dlt (struct elf64_hppa_dyn_hash_entry *dyn_h, |
1047 | void *data) | |
15bda425 JL |
1048 | { |
1049 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1050 | ||
1051 | if (dyn_h->want_dlt) | |
1052 | { | |
1053 | struct elf_link_hash_entry *h = dyn_h->h; | |
1054 | ||
1055 | if (x->info->shared) | |
1056 | { | |
1057 | /* Possibly add the symbol to the local dynamic symbol | |
1058 | table since we might need to create a dynamic relocation | |
1059 | against it. */ | |
1060 | if (! h | |
47b7c2db | 1061 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)) |
15bda425 JL |
1062 | { |
1063 | bfd *owner; | |
1064 | owner = (h ? h->root.u.def.section->owner : dyn_h->owner); | |
1065 | ||
c152c796 | 1066 | if (! (bfd_elf_link_record_local_dynamic_symbol |
dc810e39 | 1067 | (x->info, owner, dyn_h->sym_indx))) |
b34976b6 | 1068 | return FALSE; |
15bda425 JL |
1069 | } |
1070 | } | |
1071 | ||
1072 | dyn_h->dlt_offset = x->ofs; | |
1073 | x->ofs += DLT_ENTRY_SIZE; | |
1074 | } | |
b34976b6 | 1075 | return TRUE; |
15bda425 JL |
1076 | } |
1077 | ||
1078 | /* Allocate space for a DLT.PLT entry. */ | |
1079 | ||
b34976b6 | 1080 | static bfd_boolean |
813c8a3c DA |
1081 | allocate_global_data_plt (struct elf64_hppa_dyn_hash_entry *dyn_h, |
1082 | void *data) | |
15bda425 JL |
1083 | { |
1084 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1085 | ||
1086 | if (dyn_h->want_plt | |
1087 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1088 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1089 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1090 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1091 | { | |
1092 | dyn_h->plt_offset = x->ofs; | |
1093 | x->ofs += PLT_ENTRY_SIZE; | |
1094 | if (dyn_h->plt_offset < 0x2000) | |
1095 | elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset; | |
1096 | } | |
1097 | else | |
1098 | dyn_h->want_plt = 0; | |
1099 | ||
b34976b6 | 1100 | return TRUE; |
15bda425 JL |
1101 | } |
1102 | ||
1103 | /* Allocate space for a STUB entry. */ | |
1104 | ||
b34976b6 | 1105 | static bfd_boolean |
813c8a3c DA |
1106 | allocate_global_data_stub (struct elf64_hppa_dyn_hash_entry *dyn_h, |
1107 | void *data) | |
15bda425 JL |
1108 | { |
1109 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1110 | ||
1111 | if (dyn_h->want_stub | |
1112 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info) | |
1113 | && !((dyn_h->h->root.type == bfd_link_hash_defined | |
1114 | || dyn_h->h->root.type == bfd_link_hash_defweak) | |
1115 | && dyn_h->h->root.u.def.section->output_section != NULL)) | |
1116 | { | |
1117 | dyn_h->stub_offset = x->ofs; | |
1118 | x->ofs += sizeof (plt_stub); | |
1119 | } | |
1120 | else | |
1121 | dyn_h->want_stub = 0; | |
b34976b6 | 1122 | return TRUE; |
15bda425 JL |
1123 | } |
1124 | ||
1125 | /* Allocate space for a FPTR entry. */ | |
1126 | ||
b34976b6 | 1127 | static bfd_boolean |
813c8a3c DA |
1128 | allocate_global_data_opd (struct elf64_hppa_dyn_hash_entry *dyn_h, |
1129 | void *data) | |
15bda425 JL |
1130 | { |
1131 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1132 | ||
1133 | if (dyn_h->want_opd) | |
1134 | { | |
1135 | struct elf_link_hash_entry *h = dyn_h->h; | |
fe8bc63d | 1136 | |
15bda425 JL |
1137 | if (h) |
1138 | while (h->root.type == bfd_link_hash_indirect | |
1139 | || h->root.type == bfd_link_hash_warning) | |
1140 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1141 | ||
1142 | /* We never need an opd entry for a symbol which is not | |
1143 | defined by this output file. */ | |
3db4b612 | 1144 | if (h && (h->root.type == bfd_link_hash_undefined |
af7cfa33 | 1145 | || h->root.type == bfd_link_hash_undefweak |
3db4b612 | 1146 | || h->root.u.def.section->output_section == NULL)) |
15bda425 JL |
1147 | dyn_h->want_opd = 0; |
1148 | ||
1149 | /* If we are creating a shared library, took the address of a local | |
1150 | function or might export this function from this object file, then | |
1151 | we have to create an opd descriptor. */ | |
1152 | else if (x->info->shared | |
1153 | || h == NULL | |
47b7c2db | 1154 | || (h->dynindx == -1 && h->type != STT_PARISC_MILLI) |
3db4b612 JL |
1155 | || (h->root.type == bfd_link_hash_defined |
1156 | || h->root.type == bfd_link_hash_defweak)) | |
15bda425 JL |
1157 | { |
1158 | /* If we are creating a shared library, then we will have to | |
1159 | create a runtime relocation for the symbol to properly | |
1160 | initialize the .opd entry. Make sure the symbol gets | |
1161 | added to the dynamic symbol table. */ | |
1162 | if (x->info->shared | |
1163 | && (h == NULL || (h->dynindx == -1))) | |
1164 | { | |
1165 | bfd *owner; | |
adfef0bd NC |
1166 | /* PR 6511: Default to using the dynamic symbol table. */ |
1167 | owner = (dyn_h->owner ? dyn_h->owner: h->root.u.def.section->owner); | |
15bda425 | 1168 | |
c152c796 | 1169 | if (!bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 1170 | (x->info, owner, dyn_h->sym_indx)) |
b34976b6 | 1171 | return FALSE; |
15bda425 JL |
1172 | } |
1173 | ||
1174 | /* This may not be necessary or desirable anymore now that | |
1175 | we have some support for dealing with section symbols | |
1176 | in dynamic relocs. But name munging does make the result | |
1177 | much easier to debug. ie, the EPLT reloc will reference | |
1178 | a symbol like .foobar, instead of .text + offset. */ | |
1179 | if (x->info->shared && h) | |
1180 | { | |
1181 | char *new_name; | |
1182 | struct elf_link_hash_entry *nh; | |
1183 | ||
1184 | new_name = alloca (strlen (h->root.root.string) + 2); | |
1185 | new_name[0] = '.'; | |
1186 | strcpy (new_name + 1, h->root.root.string); | |
1187 | ||
1188 | nh = elf_link_hash_lookup (elf_hash_table (x->info), | |
b34976b6 | 1189 | new_name, TRUE, TRUE, TRUE); |
15bda425 JL |
1190 | |
1191 | nh->root.type = h->root.type; | |
1192 | nh->root.u.def.value = h->root.u.def.value; | |
1193 | nh->root.u.def.section = h->root.u.def.section; | |
1194 | ||
c152c796 | 1195 | if (! bfd_elf_link_record_dynamic_symbol (x->info, nh)) |
b34976b6 | 1196 | return FALSE; |
15bda425 JL |
1197 | |
1198 | } | |
1199 | dyn_h->opd_offset = x->ofs; | |
1200 | x->ofs += OPD_ENTRY_SIZE; | |
1201 | } | |
1202 | ||
1203 | /* Otherwise we do not need an opd entry. */ | |
1204 | else | |
1205 | dyn_h->want_opd = 0; | |
1206 | } | |
b34976b6 | 1207 | return TRUE; |
15bda425 JL |
1208 | } |
1209 | ||
1210 | /* HP requires the EI_OSABI field to be filled in. The assignment to | |
1211 | EI_ABIVERSION may not be strictly necessary. */ | |
1212 | ||
1213 | static void | |
813c8a3c DA |
1214 | elf64_hppa_post_process_headers (bfd *abfd, |
1215 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
15bda425 JL |
1216 | { |
1217 | Elf_Internal_Ehdr * i_ehdrp; | |
1218 | ||
1219 | i_ehdrp = elf_elfheader (abfd); | |
d1036acb L |
1220 | |
1221 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
1222 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
15bda425 JL |
1223 | } |
1224 | ||
1225 | /* Create function descriptor section (.opd). This section is called .opd | |
4cc11e76 | 1226 | because it contains "official procedure descriptors". The "official" |
15bda425 JL |
1227 | refers to the fact that these descriptors are used when taking the address |
1228 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1229 | ||
b34976b6 | 1230 | static bfd_boolean |
813c8a3c DA |
1231 | get_opd (bfd *abfd, |
1232 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1233 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1234 | { |
1235 | asection *opd; | |
1236 | bfd *dynobj; | |
1237 | ||
1238 | opd = hppa_info->opd_sec; | |
1239 | if (!opd) | |
1240 | { | |
1241 | dynobj = hppa_info->root.dynobj; | |
1242 | if (!dynobj) | |
1243 | hppa_info->root.dynobj = dynobj = abfd; | |
1244 | ||
3496cb2a L |
1245 | opd = bfd_make_section_with_flags (dynobj, ".opd", |
1246 | (SEC_ALLOC | |
1247 | | SEC_LOAD | |
1248 | | SEC_HAS_CONTENTS | |
1249 | | SEC_IN_MEMORY | |
1250 | | SEC_LINKER_CREATED)); | |
15bda425 | 1251 | if (!opd |
15bda425 JL |
1252 | || !bfd_set_section_alignment (abfd, opd, 3)) |
1253 | { | |
1254 | BFD_ASSERT (0); | |
b34976b6 | 1255 | return FALSE; |
15bda425 JL |
1256 | } |
1257 | ||
1258 | hppa_info->opd_sec = opd; | |
1259 | } | |
1260 | ||
b34976b6 | 1261 | return TRUE; |
15bda425 JL |
1262 | } |
1263 | ||
1264 | /* Create the PLT section. */ | |
1265 | ||
b34976b6 | 1266 | static bfd_boolean |
813c8a3c DA |
1267 | get_plt (bfd *abfd, |
1268 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1269 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1270 | { |
1271 | asection *plt; | |
1272 | bfd *dynobj; | |
1273 | ||
1274 | plt = hppa_info->plt_sec; | |
1275 | if (!plt) | |
1276 | { | |
1277 | dynobj = hppa_info->root.dynobj; | |
1278 | if (!dynobj) | |
1279 | hppa_info->root.dynobj = dynobj = abfd; | |
1280 | ||
3496cb2a L |
1281 | plt = bfd_make_section_with_flags (dynobj, ".plt", |
1282 | (SEC_ALLOC | |
1283 | | SEC_LOAD | |
1284 | | SEC_HAS_CONTENTS | |
1285 | | SEC_IN_MEMORY | |
1286 | | SEC_LINKER_CREATED)); | |
15bda425 | 1287 | if (!plt |
15bda425 JL |
1288 | || !bfd_set_section_alignment (abfd, plt, 3)) |
1289 | { | |
1290 | BFD_ASSERT (0); | |
b34976b6 | 1291 | return FALSE; |
15bda425 JL |
1292 | } |
1293 | ||
1294 | hppa_info->plt_sec = plt; | |
1295 | } | |
1296 | ||
b34976b6 | 1297 | return TRUE; |
15bda425 JL |
1298 | } |
1299 | ||
1300 | /* Create the DLT section. */ | |
1301 | ||
b34976b6 | 1302 | static bfd_boolean |
813c8a3c DA |
1303 | get_dlt (bfd *abfd, |
1304 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1305 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1306 | { |
1307 | asection *dlt; | |
1308 | bfd *dynobj; | |
1309 | ||
1310 | dlt = hppa_info->dlt_sec; | |
1311 | if (!dlt) | |
1312 | { | |
1313 | dynobj = hppa_info->root.dynobj; | |
1314 | if (!dynobj) | |
1315 | hppa_info->root.dynobj = dynobj = abfd; | |
1316 | ||
3496cb2a L |
1317 | dlt = bfd_make_section_with_flags (dynobj, ".dlt", |
1318 | (SEC_ALLOC | |
1319 | | SEC_LOAD | |
1320 | | SEC_HAS_CONTENTS | |
1321 | | SEC_IN_MEMORY | |
1322 | | SEC_LINKER_CREATED)); | |
15bda425 | 1323 | if (!dlt |
15bda425 JL |
1324 | || !bfd_set_section_alignment (abfd, dlt, 3)) |
1325 | { | |
1326 | BFD_ASSERT (0); | |
b34976b6 | 1327 | return FALSE; |
15bda425 JL |
1328 | } |
1329 | ||
1330 | hppa_info->dlt_sec = dlt; | |
1331 | } | |
1332 | ||
b34976b6 | 1333 | return TRUE; |
15bda425 JL |
1334 | } |
1335 | ||
1336 | /* Create the stubs section. */ | |
1337 | ||
b34976b6 | 1338 | static bfd_boolean |
813c8a3c DA |
1339 | get_stub (bfd *abfd, |
1340 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1341 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1342 | { |
1343 | asection *stub; | |
1344 | bfd *dynobj; | |
1345 | ||
1346 | stub = hppa_info->stub_sec; | |
1347 | if (!stub) | |
1348 | { | |
1349 | dynobj = hppa_info->root.dynobj; | |
1350 | if (!dynobj) | |
1351 | hppa_info->root.dynobj = dynobj = abfd; | |
1352 | ||
3496cb2a L |
1353 | stub = bfd_make_section_with_flags (dynobj, ".stub", |
1354 | (SEC_ALLOC | SEC_LOAD | |
1355 | | SEC_HAS_CONTENTS | |
1356 | | SEC_IN_MEMORY | |
1357 | | SEC_READONLY | |
1358 | | SEC_LINKER_CREATED)); | |
15bda425 | 1359 | if (!stub |
15bda425 JL |
1360 | || !bfd_set_section_alignment (abfd, stub, 3)) |
1361 | { | |
1362 | BFD_ASSERT (0); | |
b34976b6 | 1363 | return FALSE; |
15bda425 JL |
1364 | } |
1365 | ||
1366 | hppa_info->stub_sec = stub; | |
1367 | } | |
1368 | ||
b34976b6 | 1369 | return TRUE; |
15bda425 JL |
1370 | } |
1371 | ||
1372 | /* Create sections necessary for dynamic linking. This is only a rough | |
1373 | cut and will likely change as we learn more about the somewhat | |
1374 | unusual dynamic linking scheme HP uses. | |
1375 | ||
1376 | .stub: | |
1377 | Contains code to implement cross-space calls. The first time one | |
1378 | of the stubs is used it will call into the dynamic linker, later | |
1379 | calls will go straight to the target. | |
1380 | ||
1381 | The only stub we support right now looks like | |
1382 | ||
1383 | ldd OFFSET(%dp),%r1 | |
1384 | bve %r0(%r1) | |
1385 | ldd OFFSET+8(%dp),%dp | |
1386 | ||
1387 | Other stubs may be needed in the future. We may want the remove | |
1388 | the break/nop instruction. It is only used right now to keep the | |
1389 | offset of a .plt entry and a .stub entry in sync. | |
1390 | ||
1391 | .dlt: | |
1392 | This is what most people call the .got. HP used a different name. | |
1393 | Losers. | |
1394 | ||
1395 | .rela.dlt: | |
1396 | Relocations for the DLT. | |
1397 | ||
1398 | .plt: | |
1399 | Function pointers as address,gp pairs. | |
1400 | ||
1401 | .rela.plt: | |
1402 | Should contain dynamic IPLT (and EPLT?) relocations. | |
1403 | ||
1404 | .opd: | |
fe8bc63d | 1405 | FPTRS |
15bda425 JL |
1406 | |
1407 | .rela.opd: | |
1408 | EPLT relocations for symbols exported from shared libraries. */ | |
1409 | ||
b34976b6 | 1410 | static bfd_boolean |
813c8a3c DA |
1411 | elf64_hppa_create_dynamic_sections (bfd *abfd, |
1412 | struct bfd_link_info *info) | |
15bda425 JL |
1413 | { |
1414 | asection *s; | |
1415 | ||
1416 | if (! get_stub (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1417 | return FALSE; |
15bda425 JL |
1418 | |
1419 | if (! get_dlt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1420 | return FALSE; |
15bda425 JL |
1421 | |
1422 | if (! get_plt (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1423 | return FALSE; |
15bda425 JL |
1424 | |
1425 | if (! get_opd (abfd, info, elf64_hppa_hash_table (info))) | |
b34976b6 | 1426 | return FALSE; |
15bda425 | 1427 | |
3496cb2a L |
1428 | s = bfd_make_section_with_flags (abfd, ".rela.dlt", |
1429 | (SEC_ALLOC | SEC_LOAD | |
1430 | | SEC_HAS_CONTENTS | |
1431 | | SEC_IN_MEMORY | |
1432 | | SEC_READONLY | |
1433 | | SEC_LINKER_CREATED)); | |
15bda425 | 1434 | if (s == NULL |
15bda425 | 1435 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1436 | return FALSE; |
15bda425 JL |
1437 | elf64_hppa_hash_table (info)->dlt_rel_sec = s; |
1438 | ||
3496cb2a L |
1439 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1440 | (SEC_ALLOC | SEC_LOAD | |
1441 | | SEC_HAS_CONTENTS | |
1442 | | SEC_IN_MEMORY | |
1443 | | SEC_READONLY | |
1444 | | SEC_LINKER_CREATED)); | |
15bda425 | 1445 | if (s == NULL |
15bda425 | 1446 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1447 | return FALSE; |
15bda425 JL |
1448 | elf64_hppa_hash_table (info)->plt_rel_sec = s; |
1449 | ||
3496cb2a L |
1450 | s = bfd_make_section_with_flags (abfd, ".rela.data", |
1451 | (SEC_ALLOC | SEC_LOAD | |
1452 | | SEC_HAS_CONTENTS | |
1453 | | SEC_IN_MEMORY | |
1454 | | SEC_READONLY | |
1455 | | SEC_LINKER_CREATED)); | |
15bda425 | 1456 | if (s == NULL |
15bda425 | 1457 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1458 | return FALSE; |
15bda425 JL |
1459 | elf64_hppa_hash_table (info)->other_rel_sec = s; |
1460 | ||
3496cb2a L |
1461 | s = bfd_make_section_with_flags (abfd, ".rela.opd", |
1462 | (SEC_ALLOC | SEC_LOAD | |
1463 | | SEC_HAS_CONTENTS | |
1464 | | SEC_IN_MEMORY | |
1465 | | SEC_READONLY | |
1466 | | SEC_LINKER_CREATED)); | |
15bda425 | 1467 | if (s == NULL |
15bda425 | 1468 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1469 | return FALSE; |
15bda425 JL |
1470 | elf64_hppa_hash_table (info)->opd_rel_sec = s; |
1471 | ||
b34976b6 | 1472 | return TRUE; |
15bda425 JL |
1473 | } |
1474 | ||
1475 | /* Allocate dynamic relocations for those symbols that turned out | |
1476 | to be dynamic. */ | |
1477 | ||
b34976b6 | 1478 | static bfd_boolean |
813c8a3c DA |
1479 | allocate_dynrel_entries (struct elf64_hppa_dyn_hash_entry *dyn_h, |
1480 | void *data) | |
15bda425 JL |
1481 | { |
1482 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; | |
1483 | struct elf64_hppa_link_hash_table *hppa_info; | |
1484 | struct elf64_hppa_dyn_reloc_entry *rent; | |
b34976b6 | 1485 | bfd_boolean dynamic_symbol, shared; |
15bda425 JL |
1486 | |
1487 | hppa_info = elf64_hppa_hash_table (x->info); | |
1488 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info); | |
1489 | shared = x->info->shared; | |
1490 | ||
1491 | /* We may need to allocate relocations for a non-dynamic symbol | |
1492 | when creating a shared library. */ | |
1493 | if (!dynamic_symbol && !shared) | |
b34976b6 | 1494 | return TRUE; |
15bda425 JL |
1495 | |
1496 | /* Take care of the normal data relocations. */ | |
1497 | ||
1498 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
1499 | { | |
d663e1cd JL |
1500 | /* Allocate one iff we are building a shared library, the relocation |
1501 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
1502 | if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
1503 | continue; | |
1504 | ||
eea6121a | 1505 | hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1506 | |
1507 | /* Make sure this symbol gets into the dynamic symbol table if it is | |
1508 | not already recorded. ?!? This should not be in the loop since | |
1509 | the symbol need only be added once. */ | |
47b7c2db AM |
1510 | if (dyn_h->h == 0 |
1511 | || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI)) | |
c152c796 | 1512 | if (!bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 1513 | (x->info, rent->sec->owner, dyn_h->sym_indx)) |
b34976b6 | 1514 | return FALSE; |
15bda425 JL |
1515 | } |
1516 | ||
1517 | /* Take care of the GOT and PLT relocations. */ | |
1518 | ||
1519 | if ((dynamic_symbol || shared) && dyn_h->want_dlt) | |
eea6121a | 1520 | hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1521 | |
1522 | /* If we are building a shared library, then every symbol that has an | |
1523 | opd entry will need an EPLT relocation to relocate the symbol's address | |
1524 | and __gp value based on the runtime load address. */ | |
1525 | if (shared && dyn_h->want_opd) | |
eea6121a | 1526 | hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1527 | |
1528 | if (dyn_h->want_plt && dynamic_symbol) | |
1529 | { | |
1530 | bfd_size_type t = 0; | |
1531 | ||
1532 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
1533 | shared libraries get two REL relocations. Local symbols in | |
1534 | main applications get nothing. */ | |
1535 | if (dynamic_symbol) | |
1536 | t = sizeof (Elf64_External_Rela); | |
1537 | else if (shared) | |
1538 | t = 2 * sizeof (Elf64_External_Rela); | |
1539 | ||
eea6121a | 1540 | hppa_info->plt_rel_sec->size += t; |
15bda425 JL |
1541 | } |
1542 | ||
b34976b6 | 1543 | return TRUE; |
15bda425 JL |
1544 | } |
1545 | ||
1546 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1547 | regular object. */ | |
1548 | ||
b34976b6 | 1549 | static bfd_boolean |
813c8a3c DA |
1550 | elf64_hppa_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1551 | struct elf_link_hash_entry *h) | |
15bda425 JL |
1552 | { |
1553 | /* ??? Undefined symbols with PLT entries should be re-defined | |
1554 | to be the PLT entry. */ | |
1555 | ||
1556 | /* If this is a weak symbol, and there is a real definition, the | |
1557 | processor independent code will have arranged for us to see the | |
1558 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1559 | if (h->u.weakdef != NULL) |
15bda425 | 1560 | { |
f6e332e6 AM |
1561 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1562 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1563 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1564 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1565 | return TRUE; |
15bda425 JL |
1566 | } |
1567 | ||
1568 | /* If this is a reference to a symbol defined by a dynamic object which | |
1569 | is not a function, we might allocate the symbol in our .dynbss section | |
1570 | and allocate a COPY dynamic relocation. | |
1571 | ||
1572 | But PA64 code is canonically PIC, so as a rule we can avoid this sort | |
1573 | of hackery. */ | |
1574 | ||
b34976b6 | 1575 | return TRUE; |
15bda425 JL |
1576 | } |
1577 | ||
47b7c2db AM |
1578 | /* This function is called via elf_link_hash_traverse to mark millicode |
1579 | symbols with a dynindx of -1 and to remove the string table reference | |
1580 | from the dynamic symbol table. If the symbol is not a millicode symbol, | |
1581 | elf64_hppa_mark_exported_functions is called. */ | |
1582 | ||
b34976b6 | 1583 | static bfd_boolean |
813c8a3c DA |
1584 | elf64_hppa_mark_milli_and_exported_functions (struct elf_link_hash_entry *h, |
1585 | void *data) | |
47b7c2db AM |
1586 | { |
1587 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
1588 | struct elf_link_hash_entry *elf = h; | |
1589 | ||
1590 | if (elf->root.type == bfd_link_hash_warning) | |
1591 | elf = (struct elf_link_hash_entry *) elf->root.u.i.link; | |
1592 | ||
1593 | if (elf->type == STT_PARISC_MILLI) | |
1594 | { | |
1595 | if (elf->dynindx != -1) | |
1596 | { | |
1597 | elf->dynindx = -1; | |
1598 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1599 | elf->dynstr_index); | |
1600 | } | |
b34976b6 | 1601 | return TRUE; |
47b7c2db AM |
1602 | } |
1603 | ||
1604 | return elf64_hppa_mark_exported_functions (h, data); | |
1605 | } | |
1606 | ||
15bda425 JL |
1607 | /* Set the final sizes of the dynamic sections and allocate memory for |
1608 | the contents of our special sections. */ | |
1609 | ||
b34976b6 | 1610 | static bfd_boolean |
813c8a3c DA |
1611 | elf64_hppa_size_dynamic_sections (bfd *output_bfd, |
1612 | struct bfd_link_info *info) | |
15bda425 JL |
1613 | { |
1614 | bfd *dynobj; | |
1615 | asection *s; | |
b34976b6 AM |
1616 | bfd_boolean plt; |
1617 | bfd_boolean relocs; | |
1618 | bfd_boolean reltext; | |
15bda425 JL |
1619 | struct elf64_hppa_allocate_data data; |
1620 | struct elf64_hppa_link_hash_table *hppa_info; | |
1621 | ||
1622 | hppa_info = elf64_hppa_hash_table (info); | |
1623 | ||
1624 | dynobj = elf_hash_table (info)->dynobj; | |
1625 | BFD_ASSERT (dynobj != NULL); | |
1626 | ||
47b7c2db AM |
1627 | /* Mark each function this program exports so that we will allocate |
1628 | space in the .opd section for each function's FPTR. If we are | |
1629 | creating dynamic sections, change the dynamic index of millicode | |
1630 | symbols to -1 and remove them from the string table for .dynstr. | |
1631 | ||
1632 | We have to traverse the main linker hash table since we have to | |
1633 | find functions which may not have been mentioned in any relocs. */ | |
1634 | elf_link_hash_traverse (elf_hash_table (info), | |
1635 | (elf_hash_table (info)->dynamic_sections_created | |
1636 | ? elf64_hppa_mark_milli_and_exported_functions | |
1637 | : elf64_hppa_mark_exported_functions), | |
1638 | info); | |
1639 | ||
15bda425 JL |
1640 | if (elf_hash_table (info)->dynamic_sections_created) |
1641 | { | |
1642 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1643 | if (info->executable) |
15bda425 JL |
1644 | { |
1645 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1646 | BFD_ASSERT (s != NULL); | |
eea6121a | 1647 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
15bda425 JL |
1648 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1649 | } | |
1650 | } | |
1651 | else | |
1652 | { | |
1653 | /* We may have created entries in the .rela.got section. | |
1654 | However, if we are not creating the dynamic sections, we will | |
1655 | not actually use these entries. Reset the size of .rela.dlt, | |
1656 | which will cause it to get stripped from the output file | |
1657 | below. */ | |
1658 | s = bfd_get_section_by_name (dynobj, ".rela.dlt"); | |
1659 | if (s != NULL) | |
eea6121a | 1660 | s->size = 0; |
15bda425 JL |
1661 | } |
1662 | ||
1663 | /* Allocate the GOT entries. */ | |
1664 | ||
1665 | data.info = info; | |
1666 | if (elf64_hppa_hash_table (info)->dlt_sec) | |
1667 | { | |
1668 | data.ofs = 0x0; | |
1669 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1670 | allocate_global_data_dlt, &data); | |
eea6121a | 1671 | hppa_info->dlt_sec->size = data.ofs; |
15bda425 JL |
1672 | |
1673 | data.ofs = 0x0; | |
1674 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1675 | allocate_global_data_plt, &data); | |
eea6121a | 1676 | hppa_info->plt_sec->size = data.ofs; |
15bda425 JL |
1677 | |
1678 | data.ofs = 0x0; | |
1679 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1680 | allocate_global_data_stub, &data); | |
eea6121a | 1681 | hppa_info->stub_sec->size = data.ofs; |
15bda425 JL |
1682 | } |
1683 | ||
15bda425 JL |
1684 | /* Allocate space for entries in the .opd section. */ |
1685 | if (elf64_hppa_hash_table (info)->opd_sec) | |
1686 | { | |
1687 | data.ofs = 0; | |
1688 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1689 | allocate_global_data_opd, &data); | |
eea6121a | 1690 | hppa_info->opd_sec->size = data.ofs; |
15bda425 JL |
1691 | } |
1692 | ||
1693 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1694 | if (hppa_info->root.dynamic_sections_created) | |
1695 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
1696 | allocate_dynrel_entries, &data); | |
1697 | ||
1698 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 AM |
1699 | plt = FALSE; |
1700 | relocs = FALSE; | |
1701 | reltext = FALSE; | |
15bda425 JL |
1702 | for (s = dynobj->sections; s != NULL; s = s->next) |
1703 | { | |
1704 | const char *name; | |
15bda425 JL |
1705 | |
1706 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1707 | continue; | |
1708 | ||
1709 | /* It's OK to base decisions on the section name, because none | |
1710 | of the dynobj section names depend upon the input files. */ | |
1711 | name = bfd_get_section_name (dynobj, s); | |
1712 | ||
15bda425 JL |
1713 | if (strcmp (name, ".plt") == 0) |
1714 | { | |
c456f082 AM |
1715 | /* Remember whether there is a PLT. */ |
1716 | plt = s->size != 0; | |
15bda425 | 1717 | } |
c456f082 | 1718 | else if (strcmp (name, ".opd") == 0 |
0112cd26 | 1719 | || CONST_STRNEQ (name, ".dlt") |
c456f082 AM |
1720 | || strcmp (name, ".stub") == 0 |
1721 | || strcmp (name, ".got") == 0) | |
15bda425 | 1722 | { |
d663e1cd | 1723 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 | 1724 | } |
0112cd26 | 1725 | else if (CONST_STRNEQ (name, ".rela")) |
15bda425 | 1726 | { |
c456f082 | 1727 | if (s->size != 0) |
15bda425 JL |
1728 | { |
1729 | asection *target; | |
1730 | ||
1731 | /* Remember whether there are any reloc sections other | |
1732 | than .rela.plt. */ | |
1733 | if (strcmp (name, ".rela.plt") != 0) | |
1734 | { | |
1735 | const char *outname; | |
1736 | ||
b34976b6 | 1737 | relocs = TRUE; |
15bda425 JL |
1738 | |
1739 | /* If this relocation section applies to a read only | |
1740 | section, then we probably need a DT_TEXTREL | |
1741 | entry. The entries in the .rela.plt section | |
1742 | really apply to the .got section, which we | |
1743 | created ourselves and so know is not readonly. */ | |
1744 | outname = bfd_get_section_name (output_bfd, | |
1745 | s->output_section); | |
1746 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
1747 | if (target != NULL | |
1748 | && (target->flags & SEC_READONLY) != 0 | |
1749 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1750 | reltext = TRUE; |
15bda425 JL |
1751 | } |
1752 | ||
1753 | /* We use the reloc_count field as a counter if we need | |
1754 | to copy relocs into the output file. */ | |
1755 | s->reloc_count = 0; | |
1756 | } | |
1757 | } | |
c456f082 | 1758 | else |
15bda425 JL |
1759 | { |
1760 | /* It's not one of our sections, so don't allocate space. */ | |
1761 | continue; | |
1762 | } | |
1763 | ||
c456f082 | 1764 | if (s->size == 0) |
15bda425 | 1765 | { |
c456f082 AM |
1766 | /* If we don't need this section, strip it from the |
1767 | output file. This is mostly to handle .rela.bss and | |
1768 | .rela.plt. We must create both sections in | |
1769 | create_dynamic_sections, because they must be created | |
1770 | before the linker maps input sections to output | |
1771 | sections. The linker does that before | |
1772 | adjust_dynamic_symbol is called, and it is that | |
1773 | function which decides whether anything needs to go | |
1774 | into these sections. */ | |
8423293d | 1775 | s->flags |= SEC_EXCLUDE; |
15bda425 JL |
1776 | continue; |
1777 | } | |
1778 | ||
c456f082 AM |
1779 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1780 | continue; | |
1781 | ||
15bda425 | 1782 | /* Allocate memory for the section contents if it has not |
832d951b AM |
1783 | been allocated already. We use bfd_zalloc here in case |
1784 | unused entries are not reclaimed before the section's | |
1785 | contents are written out. This should not happen, but this | |
1786 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1787 | garbage. */ | |
15bda425 JL |
1788 | if (s->contents == NULL) |
1789 | { | |
eea6121a | 1790 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1791 | if (s->contents == NULL) |
b34976b6 | 1792 | return FALSE; |
15bda425 JL |
1793 | } |
1794 | } | |
1795 | ||
1796 | if (elf_hash_table (info)->dynamic_sections_created) | |
1797 | { | |
1798 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1799 | the PLT, it is how we communicate the __gp value of a load | |
1800 | module to the dynamic linker. */ | |
dc810e39 | 1801 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1802 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
1803 | |
1804 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) | |
1805 | || !add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 1806 | return FALSE; |
15bda425 JL |
1807 | |
1808 | /* Add some entries to the .dynamic section. We fill in the | |
1809 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1810 | must add the entries now so that we get the correct size for | |
1811 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1812 | dynamic linker and used by the debugger. */ | |
1813 | if (! info->shared) | |
1814 | { | |
dc810e39 AM |
1815 | if (!add_dynamic_entry (DT_DEBUG, 0) |
1816 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) | |
1817 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) | |
b34976b6 | 1818 | return FALSE; |
15bda425 JL |
1819 | } |
1820 | ||
f2482cb2 NC |
1821 | /* Force DT_FLAGS to always be set. |
1822 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1823 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1824 | return FALSE; |
f2482cb2 | 1825 | |
15bda425 JL |
1826 | if (plt) |
1827 | { | |
dc810e39 AM |
1828 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
1829 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1830 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1831 | return FALSE; |
15bda425 JL |
1832 | } |
1833 | ||
1834 | if (relocs) | |
1835 | { | |
dc810e39 AM |
1836 | if (!add_dynamic_entry (DT_RELA, 0) |
1837 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1838 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1839 | return FALSE; |
15bda425 JL |
1840 | } |
1841 | ||
1842 | if (reltext) | |
1843 | { | |
dc810e39 | 1844 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1845 | return FALSE; |
d6cf2879 | 1846 | info->flags |= DF_TEXTREL; |
15bda425 JL |
1847 | } |
1848 | } | |
dc810e39 | 1849 | #undef add_dynamic_entry |
15bda425 | 1850 | |
b34976b6 | 1851 | return TRUE; |
15bda425 JL |
1852 | } |
1853 | ||
1854 | /* Called after we have output the symbol into the dynamic symbol | |
1855 | table, but before we output the symbol into the normal symbol | |
1856 | table. | |
1857 | ||
1858 | For some symbols we had to change their address when outputting | |
1859 | the dynamic symbol table. We undo that change here so that | |
1860 | the symbols have their expected value in the normal symbol | |
1861 | table. Ick. */ | |
1862 | ||
b34976b6 | 1863 | static bfd_boolean |
813c8a3c DA |
1864 | elf64_hppa_link_output_symbol_hook (struct bfd_link_info *info, |
1865 | const char *name, | |
1866 | Elf_Internal_Sym *sym, | |
1867 | asection *input_sec ATTRIBUTE_UNUSED, | |
1868 | struct elf_link_hash_entry *h) | |
15bda425 JL |
1869 | { |
1870 | struct elf64_hppa_link_hash_table *hppa_info; | |
1871 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1872 | ||
1873 | /* We may be called with the file symbol or section symbols. | |
1874 | They never need munging, so it is safe to ignore them. */ | |
1875 | if (!name) | |
b34976b6 | 1876 | return TRUE; |
15bda425 JL |
1877 | |
1878 | /* Get the PA dyn_symbol (if any) associated with NAME. */ | |
1879 | hppa_info = elf64_hppa_hash_table (info); | |
1880 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1881 | name, FALSE, FALSE); |
ac7bbf74 | 1882 | if (!dyn_h || dyn_h->h != h) |
754021d0 | 1883 | return TRUE; |
15bda425 | 1884 | |
832d951b AM |
1885 | /* Function symbols for which we created .opd entries *may* have been |
1886 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1887 | ||
1888 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1889 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1890 | mark_exported_functions and check to see if it was overwritten | |
1891 | here instead of just checking dyn_h->h->dynindx. */ | |
ac7bbf74 | 1892 | if (dyn_h->want_opd && dyn_h->st_shndx != -1) |
15bda425 JL |
1893 | { |
1894 | /* Restore the saved value and section index. */ | |
1895 | sym->st_value = dyn_h->st_value; | |
fe8bc63d | 1896 | sym->st_shndx = dyn_h->st_shndx; |
15bda425 JL |
1897 | } |
1898 | ||
b34976b6 | 1899 | return TRUE; |
15bda425 JL |
1900 | } |
1901 | ||
1902 | /* Finish up dynamic symbol handling. We set the contents of various | |
1903 | dynamic sections here. */ | |
1904 | ||
b34976b6 | 1905 | static bfd_boolean |
813c8a3c DA |
1906 | elf64_hppa_finish_dynamic_symbol (bfd *output_bfd, |
1907 | struct bfd_link_info *info, | |
1908 | struct elf_link_hash_entry *h, | |
1909 | Elf_Internal_Sym *sym) | |
15bda425 JL |
1910 | { |
1911 | asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel; | |
1912 | struct elf64_hppa_link_hash_table *hppa_info; | |
1913 | struct elf64_hppa_dyn_hash_entry *dyn_h; | |
1914 | ||
1915 | hppa_info = elf64_hppa_hash_table (info); | |
1916 | dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table, | |
b34976b6 | 1917 | h->root.root.string, FALSE, FALSE); |
15bda425 JL |
1918 | |
1919 | stub = hppa_info->stub_sec; | |
1920 | splt = hppa_info->plt_sec; | |
1921 | sdlt = hppa_info->dlt_sec; | |
1922 | sopd = hppa_info->opd_sec; | |
1923 | spltrel = hppa_info->plt_rel_sec; | |
1924 | sdltrel = hppa_info->dlt_rel_sec; | |
1925 | ||
15bda425 JL |
1926 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1927 | value when building the dynamic symbol table for a shared library. | |
1928 | At least for symbols that refer to functions. | |
1929 | ||
1930 | We will store a new value and section index into the symbol long | |
1931 | enough to output it into the dynamic symbol table, then we restore | |
1932 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
1933 | if (dyn_h && dyn_h->want_opd) | |
1934 | { | |
f12123c0 | 1935 | BFD_ASSERT (sopd != NULL); |
d663e1cd | 1936 | |
15bda425 JL |
1937 | /* Save away the original value and section index so that we |
1938 | can restore them later. */ | |
1939 | dyn_h->st_value = sym->st_value; | |
1940 | dyn_h->st_shndx = sym->st_shndx; | |
1941 | ||
1942 | /* For the dynamic symbol table entry, we want the value to be | |
1943 | address of this symbol's entry within the .opd section. */ | |
1944 | sym->st_value = (dyn_h->opd_offset | |
1945 | + sopd->output_offset | |
1946 | + sopd->output_section->vma); | |
1947 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
1948 | sopd->output_section); | |
1949 | } | |
1950 | ||
1951 | /* Initialize a .plt entry if requested. */ | |
1952 | if (dyn_h && dyn_h->want_plt | |
1953 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
1954 | { | |
1955 | bfd_vma value; | |
1956 | Elf_Internal_Rela rel; | |
947216bf | 1957 | bfd_byte *loc; |
15bda425 | 1958 | |
f12123c0 | 1959 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
d663e1cd | 1960 | |
15bda425 JL |
1961 | /* We do not actually care about the value in the PLT entry |
1962 | if we are creating a shared library and the symbol is | |
1963 | still undefined, we create a dynamic relocation to fill | |
1964 | in the correct value. */ | |
1965 | if (info->shared && h->root.type == bfd_link_hash_undefined) | |
1966 | value = 0; | |
1967 | else | |
1968 | value = (h->root.u.def.value + h->root.u.def.section->vma); | |
1969 | ||
fe8bc63d | 1970 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
1971 | |
1972 | The format of a plt entry is | |
fe8bc63d | 1973 | <funcaddr> <__gp>. |
15bda425 JL |
1974 | |
1975 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 1976 | install the PLT entry. |
15bda425 JL |
1977 | |
1978 | We are modifying the in-memory PLT contents here, so we do not add | |
1979 | in the output_offset of the PLT section. */ | |
1980 | ||
1981 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset); | |
1982 | value = _bfd_get_gp_value (splt->output_section->owner); | |
1983 | bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8); | |
1984 | ||
1985 | /* Create a dynamic IPLT relocation for this entry. | |
1986 | ||
1987 | We are creating a relocation in the output file's PLT section, | |
1988 | which is included within the DLT secton. So we do need to include | |
1989 | the PLT's output_offset in the computation of the relocation's | |
1990 | address. */ | |
1991 | rel.r_offset = (dyn_h->plt_offset + splt->output_offset | |
1992 | + splt->output_section->vma); | |
1993 | rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT); | |
1994 | rel.r_addend = 0; | |
1995 | ||
947216bf AM |
1996 | loc = spltrel->contents; |
1997 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
1998 | bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc); | |
15bda425 JL |
1999 | } |
2000 | ||
2001 | /* Initialize an external call stub entry if requested. */ | |
2002 | if (dyn_h && dyn_h->want_stub | |
2003 | && elf64_hppa_dynamic_symbol_p (dyn_h->h, info)) | |
2004 | { | |
2005 | bfd_vma value; | |
2006 | int insn; | |
b352eebf | 2007 | unsigned int max_offset; |
15bda425 | 2008 | |
f12123c0 | 2009 | BFD_ASSERT (stub != NULL); |
d663e1cd | 2010 | |
15bda425 JL |
2011 | /* Install the generic stub template. |
2012 | ||
2013 | We are modifying the contents of the stub section, so we do not | |
2014 | need to include the stub section's output_offset here. */ | |
2015 | memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub)); | |
2016 | ||
2017 | /* Fix up the first ldd instruction. | |
2018 | ||
2019 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2020 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2021 | |
2022 | Note the plt_offset value is the value of the PLT entry relative to | |
2023 | the start of the PLT section. These instructions will reference | |
2024 | data relative to the value of __gp, which may not necessarily have | |
2025 | the same address as the start of the PLT section. | |
2026 | ||
2027 | gp_offset contains the offset of __gp within the PLT section. */ | |
2028 | value = dyn_h->plt_offset - hppa_info->gp_offset; | |
fe8bc63d | 2029 | |
15bda425 | 2030 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset); |
b352eebf AM |
2031 | if (output_bfd->arch_info->mach >= 25) |
2032 | { | |
2033 | /* Wide mode allows 16 bit offsets. */ | |
2034 | max_offset = 32768; | |
2035 | insn &= ~ 0xfff1; | |
dc810e39 | 2036 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2037 | } |
2038 | else | |
2039 | { | |
2040 | max_offset = 8192; | |
2041 | insn &= ~ 0x3ff1; | |
dc810e39 | 2042 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2043 | } |
2044 | ||
2045 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2046 | { | |
2047 | (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"), | |
2048 | dyn_h->root.string, | |
2049 | (long) value); | |
b34976b6 | 2050 | return FALSE; |
b352eebf AM |
2051 | } |
2052 | ||
dc810e39 | 2053 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2054 | stub->contents + dyn_h->stub_offset); |
2055 | ||
2056 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2057 | value += 8; |
15bda425 | 2058 | insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8); |
b352eebf AM |
2059 | if (output_bfd->arch_info->mach >= 25) |
2060 | { | |
2061 | insn &= ~ 0xfff1; | |
dc810e39 | 2062 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2063 | } |
2064 | else | |
2065 | { | |
2066 | insn &= ~ 0x3ff1; | |
dc810e39 | 2067 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2068 | } |
dc810e39 | 2069 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
15bda425 JL |
2070 | stub->contents + dyn_h->stub_offset + 8); |
2071 | } | |
2072 | ||
b34976b6 | 2073 | return TRUE; |
15bda425 JL |
2074 | } |
2075 | ||
2076 | /* The .opd section contains FPTRs for each function this file | |
2077 | exports. Initialize the FPTR entries. */ | |
2078 | ||
b34976b6 | 2079 | static bfd_boolean |
813c8a3c DA |
2080 | elf64_hppa_finalize_opd (struct elf64_hppa_dyn_hash_entry *dyn_h, |
2081 | void *data) | |
15bda425 JL |
2082 | { |
2083 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2084 | struct elf64_hppa_link_hash_table *hppa_info; | |
3db4b612 | 2085 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2086 | asection *sopd; |
2087 | asection *sopdrel; | |
2088 | ||
2089 | hppa_info = elf64_hppa_hash_table (info); | |
2090 | sopd = hppa_info->opd_sec; | |
2091 | sopdrel = hppa_info->opd_rel_sec; | |
2092 | ||
3db4b612 | 2093 | if (h && dyn_h->want_opd) |
15bda425 JL |
2094 | { |
2095 | bfd_vma value; | |
2096 | ||
fe8bc63d | 2097 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2098 | |
2099 | We are modifying the contents of the OPD section in memory, so we | |
2100 | do not need to include its output offset in this computation. */ | |
2101 | memset (sopd->contents + dyn_h->opd_offset, 0, 16); | |
2102 | ||
2103 | value = (h->root.u.def.value | |
2104 | + h->root.u.def.section->output_section->vma | |
2105 | + h->root.u.def.section->output_offset); | |
2106 | ||
2107 | /* The next word is the address of the function. */ | |
2108 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16); | |
2109 | ||
2110 | /* The last word is our local __gp value. */ | |
2111 | value = _bfd_get_gp_value (sopd->output_section->owner); | |
2112 | bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24); | |
2113 | } | |
2114 | ||
2115 | /* If we are generating a shared library, we must generate EPLT relocations | |
2116 | for each entry in the .opd, even for static functions (they may have | |
2117 | had their address taken). */ | |
2118 | if (info->shared && dyn_h && dyn_h->want_opd) | |
2119 | { | |
947216bf AM |
2120 | Elf_Internal_Rela rel; |
2121 | bfd_byte *loc; | |
15bda425 JL |
2122 | int dynindx; |
2123 | ||
2124 | /* We may need to do a relocation against a local symbol, in | |
2125 | which case we have to look up it's dynamic symbol index off | |
2126 | the local symbol hash table. */ | |
2127 | if (h && h->dynindx != -1) | |
2128 | dynindx = h->dynindx; | |
2129 | else | |
2130 | dynindx | |
2131 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2132 | dyn_h->sym_indx); | |
2133 | ||
2134 | /* The offset of this relocation is the absolute address of the | |
2135 | .opd entry for this symbol. */ | |
2136 | rel.r_offset = (dyn_h->opd_offset + sopd->output_offset | |
2137 | + sopd->output_section->vma); | |
2138 | ||
2139 | /* If H is non-null, then we have an external symbol. | |
2140 | ||
2141 | It is imperative that we use a different dynamic symbol for the | |
2142 | EPLT relocation if the symbol has global scope. | |
2143 | ||
2144 | In the dynamic symbol table, the function symbol will have a value | |
2145 | which is address of the function's .opd entry. | |
2146 | ||
2147 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2148 | (if we did, the data in the .opd would reference itself rather | |
2149 | than the actual address of the function). Instead we have to use | |
2150 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2151 | function symbol. |
15bda425 JL |
2152 | |
2153 | We prefix the original symbol with a "." and use the new symbol in | |
2154 | the EPLT relocation. This new symbol has already been recorded in | |
2155 | the symbol table, we just have to look it up and use it. | |
2156 | ||
2157 | We do not have such problems with static functions because we do | |
2158 | not make their addresses in the dynamic symbol table point to | |
2159 | the .opd entry. Ultimately this should be safe since a static | |
2160 | function can not be directly referenced outside of its shared | |
2161 | library. | |
2162 | ||
2163 | We do have to play similar games for FPTR relocations in shared | |
2164 | libraries, including those for static symbols. See the FPTR | |
2165 | handling in elf64_hppa_finalize_dynreloc. */ | |
2166 | if (h) | |
2167 | { | |
2168 | char *new_name; | |
2169 | struct elf_link_hash_entry *nh; | |
2170 | ||
2171 | new_name = alloca (strlen (h->root.root.string) + 2); | |
2172 | new_name[0] = '.'; | |
2173 | strcpy (new_name + 1, h->root.root.string); | |
2174 | ||
2175 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
adfef0bd NC |
2176 | new_name, TRUE, TRUE, FALSE); |
2177 | ||
15bda425 JL |
2178 | /* All we really want from the new symbol is its dynamic |
2179 | symbol index. */ | |
7fb9f789 NC |
2180 | if (nh) |
2181 | dynindx = nh->dynindx; | |
15bda425 JL |
2182 | } |
2183 | ||
2184 | rel.r_addend = 0; | |
2185 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2186 | ||
947216bf AM |
2187 | loc = sopdrel->contents; |
2188 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2189 | bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc); | |
15bda425 | 2190 | } |
b34976b6 | 2191 | return TRUE; |
15bda425 JL |
2192 | } |
2193 | ||
2194 | /* The .dlt section contains addresses for items referenced through the | |
2195 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2196 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2197 | ||
b34976b6 | 2198 | static bfd_boolean |
813c8a3c DA |
2199 | elf64_hppa_finalize_dlt (struct elf64_hppa_dyn_hash_entry *dyn_h, |
2200 | void *data) | |
15bda425 JL |
2201 | { |
2202 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2203 | struct elf64_hppa_link_hash_table *hppa_info; | |
2204 | asection *sdlt, *sdltrel; | |
3db4b612 | 2205 | struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL; |
15bda425 JL |
2206 | |
2207 | hppa_info = elf64_hppa_hash_table (info); | |
2208 | ||
2209 | sdlt = hppa_info->dlt_sec; | |
2210 | sdltrel = hppa_info->dlt_rel_sec; | |
2211 | ||
2212 | /* H/DYN_H may refer to a local variable and we know it's | |
2213 | address, so there is no need to create a relocation. Just install | |
2214 | the proper value into the DLT, note this shortcut can not be | |
2215 | skipped when building a shared library. */ | |
3db4b612 | 2216 | if (! info->shared && h && dyn_h->want_dlt) |
15bda425 JL |
2217 | { |
2218 | bfd_vma value; | |
2219 | ||
2220 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2221 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2222 | |
2223 | We include the OPD's output offset in this computation as | |
2224 | we are referring to an absolute address in the resulting | |
2225 | object file. */ | |
2226 | if (dyn_h->want_opd) | |
2227 | { | |
2228 | value = (dyn_h->opd_offset | |
2229 | + hppa_info->opd_sec->output_offset | |
2230 | + hppa_info->opd_sec->output_section->vma); | |
2231 | } | |
37f4508b AM |
2232 | else if ((h->root.type == bfd_link_hash_defined |
2233 | || h->root.type == bfd_link_hash_defweak) | |
2234 | && h->root.u.def.section) | |
15bda425 | 2235 | { |
3db4b612 | 2236 | value = h->root.u.def.value + h->root.u.def.section->output_offset; |
15bda425 JL |
2237 | if (h->root.u.def.section->output_section) |
2238 | value += h->root.u.def.section->output_section->vma; | |
2239 | else | |
2240 | value += h->root.u.def.section->vma; | |
2241 | } | |
3db4b612 JL |
2242 | else |
2243 | /* We have an undefined function reference. */ | |
2244 | value = 0; | |
15bda425 JL |
2245 | |
2246 | /* We do not need to include the output offset of the DLT section | |
2247 | here because we are modifying the in-memory contents. */ | |
2248 | bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset); | |
2249 | } | |
2250 | ||
4cc11e76 | 2251 | /* Create a relocation for the DLT entry associated with this symbol. |
15bda425 JL |
2252 | When building a shared library the symbol does not have to be dynamic. */ |
2253 | if (dyn_h->want_dlt | |
2254 | && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared)) | |
2255 | { | |
947216bf AM |
2256 | Elf_Internal_Rela rel; |
2257 | bfd_byte *loc; | |
15bda425 JL |
2258 | int dynindx; |
2259 | ||
2260 | /* We may need to do a relocation against a local symbol, in | |
2261 | which case we have to look up it's dynamic symbol index off | |
2262 | the local symbol hash table. */ | |
2263 | if (h && h->dynindx != -1) | |
2264 | dynindx = h->dynindx; | |
2265 | else | |
2266 | dynindx | |
2267 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2268 | dyn_h->sym_indx); | |
2269 | ||
15bda425 JL |
2270 | /* Create a dynamic relocation for this entry. Do include the output |
2271 | offset of the DLT entry since we need an absolute address in the | |
2272 | resulting object file. */ | |
2273 | rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset | |
2274 | + sdlt->output_section->vma); | |
2275 | if (h && h->type == STT_FUNC) | |
2276 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); | |
2277 | else | |
2278 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2279 | rel.r_addend = 0; | |
2280 | ||
947216bf AM |
2281 | loc = sdltrel->contents; |
2282 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2283 | bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc); | |
15bda425 | 2284 | } |
b34976b6 | 2285 | return TRUE; |
15bda425 JL |
2286 | } |
2287 | ||
2288 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2289 | for dynamic functions used to initialize static data. */ | |
2290 | ||
b34976b6 | 2291 | static bfd_boolean |
813c8a3c DA |
2292 | elf64_hppa_finalize_dynreloc (struct elf64_hppa_dyn_hash_entry *dyn_h, |
2293 | void *data) | |
15bda425 JL |
2294 | { |
2295 | struct bfd_link_info *info = (struct bfd_link_info *)data; | |
2296 | struct elf64_hppa_link_hash_table *hppa_info; | |
2297 | struct elf_link_hash_entry *h; | |
2298 | int dynamic_symbol; | |
2299 | ||
2300 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info); | |
2301 | ||
2302 | if (!dynamic_symbol && !info->shared) | |
b34976b6 | 2303 | return TRUE; |
15bda425 JL |
2304 | |
2305 | if (dyn_h->reloc_entries) | |
2306 | { | |
2307 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2308 | int dynindx; | |
2309 | ||
2310 | hppa_info = elf64_hppa_hash_table (info); | |
2311 | h = dyn_h->h; | |
2312 | ||
2313 | /* We may need to do a relocation against a local symbol, in | |
2314 | which case we have to look up it's dynamic symbol index off | |
2315 | the local symbol hash table. */ | |
2316 | if (h && h->dynindx != -1) | |
2317 | dynindx = h->dynindx; | |
2318 | else | |
2319 | dynindx | |
2320 | = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner, | |
2321 | dyn_h->sym_indx); | |
2322 | ||
2323 | for (rent = dyn_h->reloc_entries; rent; rent = rent->next) | |
2324 | { | |
947216bf AM |
2325 | Elf_Internal_Rela rel; |
2326 | bfd_byte *loc; | |
15bda425 | 2327 | |
d663e1cd JL |
2328 | /* Allocate one iff we are building a shared library, the relocation |
2329 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
2330 | if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) | |
2331 | continue; | |
15bda425 | 2332 | |
fe8bc63d | 2333 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2334 | |
2335 | We need the output offset for the reloc's section because | |
2336 | we are creating an absolute address in the resulting object | |
2337 | file. */ | |
2338 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2339 | + rent->sec->output_section->vma); | |
2340 | ||
2341 | /* An FPTR64 relocation implies that we took the address of | |
2342 | a function and that the function has an entry in the .opd | |
2343 | section. We want the FPTR64 relocation to reference the | |
2344 | entry in .opd. | |
2345 | ||
2346 | We could munge the symbol value in the dynamic symbol table | |
2347 | (in fact we already do for functions with global scope) to point | |
2348 | to the .opd entry. Then we could use that dynamic symbol in | |
2349 | this relocation. | |
2350 | ||
2351 | Or we could do something sensible, not munge the symbol's | |
2352 | address and instead just use a different symbol to reference | |
2353 | the .opd entry. At least that seems sensible until you | |
2354 | realize there's no local dynamic symbols we can use for that | |
2355 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2356 | |
15bda425 JL |
2357 | We use a section symbol recorded by check_relocs as the |
2358 | base symbol for the relocation. The addend is the difference | |
2359 | between the section symbol and the address of the .opd entry. */ | |
3db4b612 | 2360 | if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd) |
15bda425 JL |
2361 | { |
2362 | bfd_vma value, value2; | |
15bda425 JL |
2363 | |
2364 | /* First compute the address of the opd entry for this symbol. */ | |
2365 | value = (dyn_h->opd_offset | |
2366 | + hppa_info->opd_sec->output_section->vma | |
2367 | + hppa_info->opd_sec->output_offset); | |
2368 | ||
2369 | /* Compute the value of the start of the section with | |
2370 | the relocation. */ | |
2371 | value2 = (rent->sec->output_section->vma | |
2372 | + rent->sec->output_offset); | |
2373 | ||
2374 | /* Compute the difference between the start of the section | |
2375 | with the relocation and the opd entry. */ | |
2376 | value -= value2; | |
fe8bc63d | 2377 | |
15bda425 JL |
2378 | /* The result becomes the addend of the relocation. */ |
2379 | rel.r_addend = value; | |
2380 | ||
2381 | /* The section symbol becomes the symbol for the dynamic | |
2382 | relocation. */ | |
2383 | dynindx | |
2384 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2385 | rent->sec->owner, | |
2386 | rent->sec_symndx); | |
2387 | } | |
2388 | else | |
2389 | rel.r_addend = rent->addend; | |
2390 | ||
2391 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2392 | ||
947216bf AM |
2393 | loc = hppa_info->other_rel_sec->contents; |
2394 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2395 | * sizeof (Elf64_External_Rela)); | |
15bda425 | 2396 | bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner, |
947216bf | 2397 | &rel, loc); |
15bda425 JL |
2398 | } |
2399 | } | |
2400 | ||
b34976b6 | 2401 | return TRUE; |
15bda425 JL |
2402 | } |
2403 | ||
5ac81c74 JL |
2404 | /* Used to decide how to sort relocs in an optimal manner for the |
2405 | dynamic linker, before writing them out. */ | |
2406 | ||
2407 | static enum elf_reloc_type_class | |
813c8a3c | 2408 | elf64_hppa_reloc_type_class (const Elf_Internal_Rela *rela) |
5ac81c74 JL |
2409 | { |
2410 | if (ELF64_R_SYM (rela->r_info) == 0) | |
2411 | return reloc_class_relative; | |
2412 | ||
2413 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2414 | { | |
2415 | case R_PARISC_IPLT: | |
2416 | return reloc_class_plt; | |
2417 | case R_PARISC_COPY: | |
2418 | return reloc_class_copy; | |
2419 | default: | |
2420 | return reloc_class_normal; | |
2421 | } | |
2422 | } | |
2423 | ||
15bda425 JL |
2424 | /* Finish up the dynamic sections. */ |
2425 | ||
b34976b6 | 2426 | static bfd_boolean |
813c8a3c DA |
2427 | elf64_hppa_finish_dynamic_sections (bfd *output_bfd, |
2428 | struct bfd_link_info *info) | |
15bda425 JL |
2429 | { |
2430 | bfd *dynobj; | |
2431 | asection *sdyn; | |
2432 | struct elf64_hppa_link_hash_table *hppa_info; | |
2433 | ||
2434 | hppa_info = elf64_hppa_hash_table (info); | |
2435 | ||
2436 | /* Finalize the contents of the .opd section. */ | |
2437 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2438 | elf64_hppa_finalize_opd, | |
2439 | info); | |
2440 | ||
2441 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2442 | elf64_hppa_finalize_dynreloc, | |
2443 | info); | |
2444 | ||
2445 | /* Finalize the contents of the .dlt section. */ | |
2446 | dynobj = elf_hash_table (info)->dynobj; | |
2447 | /* Finalize the contents of the .dlt section. */ | |
2448 | elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table, | |
2449 | elf64_hppa_finalize_dlt, | |
2450 | info); | |
2451 | ||
15bda425 JL |
2452 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2453 | ||
2454 | if (elf_hash_table (info)->dynamic_sections_created) | |
2455 | { | |
2456 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2457 | |
2458 | BFD_ASSERT (sdyn != NULL); | |
2459 | ||
2460 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 2461 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
15bda425 JL |
2462 | for (; dyncon < dynconend; dyncon++) |
2463 | { | |
2464 | Elf_Internal_Dyn dyn; | |
2465 | asection *s; | |
2466 | ||
2467 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2468 | ||
2469 | switch (dyn.d_tag) | |
2470 | { | |
2471 | default: | |
2472 | break; | |
2473 | ||
2474 | case DT_HP_LOAD_MAP: | |
2475 | /* Compute the absolute address of 16byte scratchpad area | |
2476 | for the dynamic linker. | |
2477 | ||
2478 | By convention the linker script will allocate the scratchpad | |
2479 | area at the start of the .data section. So all we have to | |
2480 | to is find the start of the .data section. */ | |
2481 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
2482 | dyn.d_un.d_ptr = s->vma; | |
2483 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2484 | break; | |
2485 | ||
2486 | case DT_PLTGOT: | |
2487 | /* HP's use PLTGOT to set the GOT register. */ | |
2488 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2489 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2490 | break; | |
2491 | ||
2492 | case DT_JMPREL: | |
2493 | s = hppa_info->plt_rel_sec; | |
2494 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2495 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2496 | break; | |
2497 | ||
2498 | case DT_PLTRELSZ: | |
2499 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2500 | dyn.d_un.d_val = s->size; |
15bda425 JL |
2501 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2502 | break; | |
2503 | ||
2504 | case DT_RELA: | |
2505 | s = hppa_info->other_rel_sec; | |
eea6121a | 2506 | if (! s || ! s->size) |
15bda425 | 2507 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2508 | if (! s || ! s->size) |
5ac81c74 | 2509 | s = hppa_info->opd_rel_sec; |
15bda425 JL |
2510 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2511 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2512 | break; | |
2513 | ||
2514 | case DT_RELASZ: | |
2515 | s = hppa_info->other_rel_sec; | |
eea6121a | 2516 | dyn.d_un.d_val = s->size; |
15bda425 | 2517 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2518 | dyn.d_un.d_val += s->size; |
15bda425 | 2519 | s = hppa_info->opd_rel_sec; |
eea6121a | 2520 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2521 | /* There is some question about whether or not the size of |
2522 | the PLT relocs should be included here. HP's tools do | |
2523 | it, so we'll emulate them. */ | |
2524 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2525 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2526 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2527 | break; | |
2528 | ||
2529 | } | |
2530 | } | |
2531 | } | |
2532 | ||
b34976b6 | 2533 | return TRUE; |
15bda425 JL |
2534 | } |
2535 | ||
235ecfbc NC |
2536 | /* Support for core dump NOTE sections. */ |
2537 | ||
2538 | static bfd_boolean | |
2539 | elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2540 | { | |
2541 | int offset; | |
2542 | size_t size; | |
2543 | ||
2544 | switch (note->descsz) | |
2545 | { | |
2546 | default: | |
2547 | return FALSE; | |
2548 | ||
2549 | case 760: /* Linux/hppa */ | |
2550 | /* pr_cursig */ | |
2551 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2552 | ||
2553 | /* pr_pid */ | |
2554 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2555 | ||
2556 | /* pr_reg */ | |
2557 | offset = 112; | |
2558 | size = 640; | |
2559 | ||
2560 | break; | |
2561 | } | |
2562 | ||
2563 | /* Make a ".reg/999" section. */ | |
2564 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2565 | size, note->descpos + offset); | |
2566 | } | |
2567 | ||
2568 | static bfd_boolean | |
2569 | elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2570 | { | |
2571 | char * command; | |
2572 | int n; | |
2573 | ||
2574 | switch (note->descsz) | |
2575 | { | |
2576 | default: | |
2577 | return FALSE; | |
2578 | ||
2579 | case 136: /* Linux/hppa elf_prpsinfo. */ | |
2580 | elf_tdata (abfd)->core_program | |
2581 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2582 | elf_tdata (abfd)->core_command | |
2583 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2584 | } | |
2585 | ||
2586 | /* Note that for some reason, a spurious space is tacked | |
2587 | onto the end of the args in some (at least one anyway) | |
2588 | implementations, so strip it off if it exists. */ | |
2589 | command = elf_tdata (abfd)->core_command; | |
2590 | n = strlen (command); | |
2591 | ||
2592 | if (0 < n && command[n - 1] == ' ') | |
2593 | command[n - 1] = '\0'; | |
2594 | ||
2595 | return TRUE; | |
2596 | } | |
2597 | ||
15bda425 JL |
2598 | /* Return the number of additional phdrs we will need. |
2599 | ||
2600 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2601 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2602 | |
2603 | This routine indicates that the backend needs one additional program | |
2604 | header for that case. | |
2605 | ||
2606 | Note we do not have access to the link info structure here, so we have | |
2607 | to guess whether or not we are building a shared library based on the | |
2608 | existence of a .interp section. */ | |
2609 | ||
2610 | static int | |
a6b96beb | 2611 | elf64_hppa_additional_program_headers (bfd *abfd, |
813c8a3c | 2612 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
15bda425 JL |
2613 | { |
2614 | asection *s; | |
2615 | ||
2616 | /* If we are creating a shared library, then we have to create a | |
2617 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2618 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2619 | if (! s) | |
2620 | return 1; | |
2621 | return 0; | |
2622 | } | |
2623 | ||
2624 | /* Allocate and initialize any program headers required by this | |
2625 | specific backend. | |
2626 | ||
2627 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2628 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2629 | |
2630 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2631 | for the HP linker. |
15bda425 JL |
2632 | |
2633 | Note we do not have access to the link info structure here, so we have | |
2634 | to guess whether or not we are building a shared library based on the | |
2635 | existence of a .interp section. */ | |
2636 | ||
b34976b6 | 2637 | static bfd_boolean |
8ded5a0f AM |
2638 | elf64_hppa_modify_segment_map (bfd *abfd, |
2639 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
15bda425 | 2640 | { |
edd21aca | 2641 | struct elf_segment_map *m; |
15bda425 JL |
2642 | asection *s; |
2643 | ||
2644 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2645 | if (! s) | |
2646 | { | |
2647 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2648 | if (m->p_type == PT_PHDR) | |
2649 | break; | |
2650 | if (m == NULL) | |
2651 | { | |
dc810e39 AM |
2652 | m = ((struct elf_segment_map *) |
2653 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2654 | if (m == NULL) |
b34976b6 | 2655 | return FALSE; |
15bda425 JL |
2656 | |
2657 | m->p_type = PT_PHDR; | |
2658 | m->p_flags = PF_R | PF_X; | |
2659 | m->p_flags_valid = 1; | |
2660 | m->p_paddr_valid = 1; | |
2661 | m->includes_phdrs = 1; | |
2662 | ||
2663 | m->next = elf_tdata (abfd)->segment_map; | |
2664 | elf_tdata (abfd)->segment_map = m; | |
2665 | } | |
2666 | } | |
2667 | ||
2668 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2669 | if (m->p_type == PT_LOAD) | |
2670 | { | |
0ba2a60e | 2671 | unsigned int i; |
15bda425 JL |
2672 | |
2673 | for (i = 0; i < m->count; i++) | |
2674 | { | |
2675 | /* The code "hint" is not really a hint. It is a requirement | |
2676 | for certain versions of the HP dynamic linker. Worse yet, | |
2677 | it must be set even if the shared library does not have | |
2678 | any code in its "text" segment (thus the check for .hash | |
2679 | to catch this situation). */ | |
2680 | if (m->sections[i]->flags & SEC_CODE | |
2681 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2682 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2683 | } | |
2684 | } | |
2685 | ||
b34976b6 | 2686 | return TRUE; |
15bda425 JL |
2687 | } |
2688 | ||
3fab46d0 AM |
2689 | /* Called when writing out an object file to decide the type of a |
2690 | symbol. */ | |
2691 | static int | |
813c8a3c DA |
2692 | elf64_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, |
2693 | int type) | |
3fab46d0 AM |
2694 | { |
2695 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2696 | return STT_PARISC_MILLI; | |
2697 | else | |
2698 | return type; | |
2699 | } | |
2700 | ||
d97a8924 DA |
2701 | /* Support HP specific sections for core files. */ |
2702 | static bfd_boolean | |
2703 | elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index, | |
2704 | const char *typename) | |
2705 | { | |
927e625f MK |
2706 | if (hdr->p_type == PT_HP_CORE_KERNEL) |
2707 | { | |
2708 | asection *sect; | |
2709 | ||
2710 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)) | |
2711 | return FALSE; | |
2712 | ||
2713 | sect = bfd_make_section_anyway (abfd, ".kernel"); | |
2714 | if (sect == NULL) | |
2715 | return FALSE; | |
2716 | sect->size = hdr->p_filesz; | |
2717 | sect->filepos = hdr->p_offset; | |
2718 | sect->flags = SEC_HAS_CONTENTS | SEC_READONLY; | |
2719 | return TRUE; | |
2720 | } | |
2721 | ||
d97a8924 DA |
2722 | if (hdr->p_type == PT_HP_CORE_PROC) |
2723 | { | |
2724 | int sig; | |
2725 | ||
2726 | if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0) | |
2727 | return FALSE; | |
2728 | if (bfd_bread (&sig, 4, abfd) != 4) | |
2729 | return FALSE; | |
2730 | ||
2731 | elf_tdata (abfd)->core_signal = sig; | |
2732 | ||
927e625f | 2733 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)) |
d97a8924 | 2734 | return FALSE; |
927e625f MK |
2735 | |
2736 | /* GDB uses the ".reg" section to read register contents. */ | |
2737 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz, | |
2738 | hdr->p_offset); | |
d97a8924 DA |
2739 | } |
2740 | ||
2741 | if (hdr->p_type == PT_HP_CORE_LOADABLE | |
2742 | || hdr->p_type == PT_HP_CORE_STACK | |
2743 | || hdr->p_type == PT_HP_CORE_MMF) | |
2744 | hdr->p_type = PT_LOAD; | |
2745 | ||
2746 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, typename); | |
2747 | } | |
2748 | ||
b35d266b | 2749 | static const struct bfd_elf_special_section elf64_hppa_special_sections[] = |
2f89ff8d | 2750 | { |
0112cd26 NC |
2751 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2752 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2753 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2754 | { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2755 | { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2756 | { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
2757 | { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS }, | |
2758 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2759 | }; |
2760 | ||
15bda425 JL |
2761 | /* The hash bucket size is the standard one, namely 4. */ |
2762 | ||
2763 | const struct elf_size_info hppa64_elf_size_info = | |
2764 | { | |
2765 | sizeof (Elf64_External_Ehdr), | |
2766 | sizeof (Elf64_External_Phdr), | |
2767 | sizeof (Elf64_External_Shdr), | |
2768 | sizeof (Elf64_External_Rel), | |
2769 | sizeof (Elf64_External_Rela), | |
2770 | sizeof (Elf64_External_Sym), | |
2771 | sizeof (Elf64_External_Dyn), | |
2772 | sizeof (Elf_External_Note), | |
2773 | 4, | |
2774 | 1, | |
45d6a902 | 2775 | 64, 3, |
15bda425 JL |
2776 | ELFCLASS64, EV_CURRENT, |
2777 | bfd_elf64_write_out_phdrs, | |
2778 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 2779 | bfd_elf64_checksum_contents, |
15bda425 | 2780 | bfd_elf64_write_relocs, |
73ff0d56 | 2781 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
2782 | bfd_elf64_swap_symbol_out, |
2783 | bfd_elf64_slurp_reloc_table, | |
2784 | bfd_elf64_slurp_symbol_table, | |
2785 | bfd_elf64_swap_dyn_in, | |
2786 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
2787 | bfd_elf64_swap_reloc_in, |
2788 | bfd_elf64_swap_reloc_out, | |
2789 | bfd_elf64_swap_reloca_in, | |
2790 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
2791 | }; |
2792 | ||
2793 | #define TARGET_BIG_SYM bfd_elf64_hppa_vec | |
2794 | #define TARGET_BIG_NAME "elf64-hppa" | |
2795 | #define ELF_ARCH bfd_arch_hppa | |
2796 | #define ELF_MACHINE_CODE EM_PARISC | |
2797 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
2798 | 64M. But everything still uses 4k. */ | |
2799 | #define ELF_MAXPAGESIZE 0x1000 | |
d1036acb L |
2800 | #define ELF_OSABI ELFOSABI_HPUX |
2801 | ||
15bda425 | 2802 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
157090f7 | 2803 | #define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup |
15bda425 JL |
2804 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name |
2805 | #define elf_info_to_howto elf_hppa_info_to_howto | |
2806 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
2807 | ||
2808 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
2809 | #define elf_backend_object_p elf64_hppa_object_p | |
2810 | #define elf_backend_final_write_processing \ | |
2811 | elf_hppa_final_write_processing | |
99c79b2e | 2812 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
2813 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
2814 | ||
f0fe0e16 | 2815 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
2816 | |
2817 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
2818 | ||
2819 | #define elf_backend_create_dynamic_sections \ | |
2820 | elf64_hppa_create_dynamic_sections | |
2821 | #define elf_backend_post_process_headers elf64_hppa_post_process_headers | |
2822 | ||
74541ad4 AM |
2823 | #define elf_backend_omit_section_dynsym \ |
2824 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
15bda425 JL |
2825 | #define elf_backend_adjust_dynamic_symbol \ |
2826 | elf64_hppa_adjust_dynamic_symbol | |
2827 | ||
2828 | #define elf_backend_size_dynamic_sections \ | |
2829 | elf64_hppa_size_dynamic_sections | |
2830 | ||
2831 | #define elf_backend_finish_dynamic_symbol \ | |
2832 | elf64_hppa_finish_dynamic_symbol | |
2833 | #define elf_backend_finish_dynamic_sections \ | |
2834 | elf64_hppa_finish_dynamic_sections | |
235ecfbc NC |
2835 | #define elf_backend_grok_prstatus elf64_hppa_grok_prstatus |
2836 | #define elf_backend_grok_psinfo elf64_hppa_grok_psinfo | |
2837 | ||
15bda425 JL |
2838 | /* Stuff for the BFD linker: */ |
2839 | #define bfd_elf64_bfd_link_hash_table_create \ | |
2840 | elf64_hppa_hash_table_create | |
2841 | ||
2842 | #define elf_backend_check_relocs \ | |
2843 | elf64_hppa_check_relocs | |
2844 | ||
2845 | #define elf_backend_size_info \ | |
2846 | hppa64_elf_size_info | |
2847 | ||
2848 | #define elf_backend_additional_program_headers \ | |
2849 | elf64_hppa_additional_program_headers | |
2850 | ||
2851 | #define elf_backend_modify_segment_map \ | |
2852 | elf64_hppa_modify_segment_map | |
2853 | ||
2854 | #define elf_backend_link_output_symbol_hook \ | |
2855 | elf64_hppa_link_output_symbol_hook | |
2856 | ||
15bda425 JL |
2857 | #define elf_backend_want_got_plt 0 |
2858 | #define elf_backend_plt_readonly 0 | |
2859 | #define elf_backend_want_plt_sym 0 | |
2860 | #define elf_backend_got_header_size 0 | |
b34976b6 AM |
2861 | #define elf_backend_type_change_ok TRUE |
2862 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
2863 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
2864 | #define elf_backend_rela_normal 1 | |
29ef7005 | 2865 | #define elf_backend_special_sections elf64_hppa_special_sections |
8a696751 | 2866 | #define elf_backend_action_discarded elf_hppa_action_discarded |
d97a8924 | 2867 | #define elf_backend_section_from_phdr elf64_hppa_section_from_phdr |
15bda425 | 2868 | |
83d1651b L |
2869 | #define elf64_bed elf64_hppa_hpux_bed |
2870 | ||
15bda425 | 2871 | #include "elf64-target.h" |
d952f17a AM |
2872 | |
2873 | #undef TARGET_BIG_SYM | |
2874 | #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec | |
2875 | #undef TARGET_BIG_NAME | |
2876 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
d1036acb L |
2877 | #undef ELF_OSABI |
2878 | #define ELF_OSABI ELFOSABI_LINUX | |
2879 | #undef elf_backend_post_process_headers | |
2880 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
83d1651b L |
2881 | #undef elf64_bed |
2882 | #define elf64_bed elf64_hppa_linux_bed | |
d952f17a | 2883 | |
d952f17a | 2884 | #include "elf64-target.h" |