Commit | Line | Data |
---|---|---|
b352eebf | 1 | /* Support for HPPA 64-bit ELF |
4dfe6ac6 NC |
2 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
3 | 2010 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 | |
8d25cc3d | 22 | #include "alloca-conf.h" |
15bda425 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
15bda425 JL |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
27 | #include "elf/hppa.h" | |
28 | #include "libhppa.h" | |
29 | #include "elf64-hppa.h" | |
8bc9c892 | 30 | |
8bc9c892 | 31 | |
15bda425 JL |
32 | #define ARCH_SIZE 64 |
33 | ||
34 | #define PLT_ENTRY_SIZE 0x10 | |
35 | #define DLT_ENTRY_SIZE 0x8 | |
36 | #define OPD_ENTRY_SIZE 0x20 | |
fe8bc63d | 37 | |
15bda425 JL |
38 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
39 | ||
40 | /* The stub is supposed to load the target address and target's DP | |
41 | value out of the PLT, then do an external branch to the target | |
42 | address. | |
43 | ||
44 | LDD PLTOFF(%r27),%r1 | |
45 | BVE (%r1) | |
46 | LDD PLTOFF+8(%r27),%r27 | |
47 | ||
48 | Note that we must use the LDD with a 14 bit displacement, not the one | |
49 | with a 5 bit displacement. */ | |
50 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, | |
51 | 0x53, 0x7b, 0x00, 0x00 }; | |
52 | ||
a03bd320 | 53 | struct elf64_hppa_link_hash_entry |
15bda425 | 54 | { |
a03bd320 | 55 | struct elf_link_hash_entry eh; |
15bda425 JL |
56 | |
57 | /* Offsets for this symbol in various linker sections. */ | |
58 | bfd_vma dlt_offset; | |
59 | bfd_vma plt_offset; | |
60 | bfd_vma opd_offset; | |
61 | bfd_vma stub_offset; | |
62 | ||
15bda425 JL |
63 | /* The index of the (possibly local) symbol in the input bfd and its |
64 | associated BFD. Needed so that we can have relocs against local | |
65 | symbols in shared libraries. */ | |
dc810e39 | 66 | long sym_indx; |
15bda425 JL |
67 | bfd *owner; |
68 | ||
69 | /* Dynamic symbols may need to have two different values. One for | |
70 | the dynamic symbol table, one for the normal symbol table. | |
71 | ||
72 | In such cases we store the symbol's real value and section | |
73 | index here so we can restore the real value before we write | |
74 | the normal symbol table. */ | |
75 | bfd_vma st_value; | |
76 | int st_shndx; | |
77 | ||
78 | /* Used to count non-got, non-plt relocations for delayed sizing | |
79 | of relocation sections. */ | |
80 | struct elf64_hppa_dyn_reloc_entry | |
81 | { | |
82 | /* Next relocation in the chain. */ | |
83 | struct elf64_hppa_dyn_reloc_entry *next; | |
84 | ||
85 | /* The type of the relocation. */ | |
86 | int type; | |
87 | ||
88 | /* The input section of the relocation. */ | |
89 | asection *sec; | |
90 | ||
a03bd320 DA |
91 | /* Number of relocs copied in this section. */ |
92 | bfd_size_type count; | |
93 | ||
15bda425 JL |
94 | /* The index of the section symbol for the input section of |
95 | the relocation. Only needed when building shared libraries. */ | |
96 | int sec_symndx; | |
97 | ||
98 | /* The offset within the input section of the relocation. */ | |
99 | bfd_vma offset; | |
100 | ||
101 | /* The addend for the relocation. */ | |
102 | bfd_vma addend; | |
103 | ||
104 | } *reloc_entries; | |
105 | ||
106 | /* Nonzero if this symbol needs an entry in one of the linker | |
107 | sections. */ | |
108 | unsigned want_dlt; | |
109 | unsigned want_plt; | |
110 | unsigned want_opd; | |
111 | unsigned want_stub; | |
112 | }; | |
113 | ||
15bda425 JL |
114 | struct elf64_hppa_link_hash_table |
115 | { | |
116 | struct elf_link_hash_table root; | |
117 | ||
118 | /* Shortcuts to get to the various linker defined sections. */ | |
119 | asection *dlt_sec; | |
120 | asection *dlt_rel_sec; | |
121 | asection *plt_sec; | |
122 | asection *plt_rel_sec; | |
123 | asection *opd_sec; | |
124 | asection *opd_rel_sec; | |
125 | asection *other_rel_sec; | |
126 | ||
127 | /* Offset of __gp within .plt section. When the PLT gets large we want | |
128 | to slide __gp into the PLT section so that we can continue to use | |
129 | single DP relative instructions to load values out of the PLT. */ | |
130 | bfd_vma gp_offset; | |
131 | ||
132 | /* Note this is not strictly correct. We should create a stub section for | |
133 | each input section with calls. The stub section should be placed before | |
134 | the section with the call. */ | |
135 | asection *stub_sec; | |
136 | ||
137 | bfd_vma text_segment_base; | |
138 | bfd_vma data_segment_base; | |
139 | ||
15bda425 JL |
140 | /* We build tables to map from an input section back to its |
141 | symbol index. This is the BFD for which we currently have | |
142 | a map. */ | |
143 | bfd *section_syms_bfd; | |
144 | ||
145 | /* Array of symbol numbers for each input section attached to the | |
146 | current BFD. */ | |
147 | int *section_syms; | |
148 | }; | |
149 | ||
a03bd320 | 150 | #define hppa_link_hash_table(p) \ |
4dfe6ac6 NC |
151 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
152 | == HPPA64_ELF_DATA ? ((struct elf64_hppa_link_hash_table *) ((p)->hash)) : NULL) | |
15bda425 | 153 | |
a03bd320 DA |
154 | #define hppa_elf_hash_entry(ent) \ |
155 | ((struct elf64_hppa_link_hash_entry *)(ent)) | |
156 | ||
157 | #define eh_name(eh) \ | |
158 | (eh ? eh->root.root.string : "<undef>") | |
159 | ||
15bda425 | 160 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
813c8a3c | 161 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
15bda425 | 162 | |
15bda425 | 163 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create |
813c8a3c DA |
164 | (bfd *abfd); |
165 | ||
15bda425 JL |
166 | /* This must follow the definitions of the various derived linker |
167 | hash tables and shared functions. */ | |
168 | #include "elf-hppa.h" | |
169 | ||
b34976b6 | 170 | static bfd_boolean elf64_hppa_object_p |
813c8a3c | 171 | (bfd *); |
15bda425 | 172 | |
15bda425 | 173 | static void elf64_hppa_post_process_headers |
813c8a3c | 174 | (bfd *, struct bfd_link_info *); |
15bda425 | 175 | |
b34976b6 | 176 | static bfd_boolean elf64_hppa_create_dynamic_sections |
813c8a3c | 177 | (bfd *, struct bfd_link_info *); |
15bda425 | 178 | |
b34976b6 | 179 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
813c8a3c | 180 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
15bda425 | 181 | |
b34976b6 | 182 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
813c8a3c | 183 | (struct elf_link_hash_entry *, void *); |
47b7c2db | 184 | |
b34976b6 | 185 | static bfd_boolean elf64_hppa_size_dynamic_sections |
813c8a3c | 186 | (bfd *, struct bfd_link_info *); |
15bda425 | 187 | |
6e0b88f1 | 188 | static int elf64_hppa_link_output_symbol_hook |
813c8a3c DA |
189 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
190 | asection *, struct elf_link_hash_entry *); | |
99c79b2e | 191 | |
b34976b6 | 192 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
813c8a3c DA |
193 | (bfd *, struct bfd_link_info *, |
194 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
fe8bc63d | 195 | |
5ac81c74 | 196 | static enum elf_reloc_type_class elf64_hppa_reloc_type_class |
813c8a3c | 197 | (const Elf_Internal_Rela *); |
5ac81c74 | 198 | |
b34976b6 | 199 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
813c8a3c | 200 | (bfd *, struct bfd_link_info *); |
15bda425 | 201 | |
b34976b6 | 202 | static bfd_boolean elf64_hppa_check_relocs |
813c8a3c DA |
203 | (bfd *, struct bfd_link_info *, |
204 | asection *, const Elf_Internal_Rela *); | |
15bda425 | 205 | |
b34976b6 | 206 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
813c8a3c | 207 | (struct elf_link_hash_entry *, struct bfd_link_info *); |
15bda425 | 208 | |
b34976b6 | 209 | static bfd_boolean elf64_hppa_mark_exported_functions |
813c8a3c | 210 | (struct elf_link_hash_entry *, void *); |
15bda425 | 211 | |
b34976b6 | 212 | static bfd_boolean elf64_hppa_finalize_opd |
a03bd320 | 213 | (struct elf_link_hash_entry *, void *); |
15bda425 | 214 | |
b34976b6 | 215 | static bfd_boolean elf64_hppa_finalize_dlt |
a03bd320 | 216 | (struct elf_link_hash_entry *, void *); |
15bda425 | 217 | |
b34976b6 | 218 | static bfd_boolean allocate_global_data_dlt |
a03bd320 | 219 | (struct elf_link_hash_entry *, void *); |
15bda425 | 220 | |
b34976b6 | 221 | static bfd_boolean allocate_global_data_plt |
a03bd320 | 222 | (struct elf_link_hash_entry *, void *); |
15bda425 | 223 | |
b34976b6 | 224 | static bfd_boolean allocate_global_data_stub |
a03bd320 | 225 | (struct elf_link_hash_entry *, void *); |
15bda425 | 226 | |
b34976b6 | 227 | static bfd_boolean allocate_global_data_opd |
a03bd320 | 228 | (struct elf_link_hash_entry *, void *); |
15bda425 | 229 | |
b34976b6 | 230 | static bfd_boolean get_reloc_section |
813c8a3c | 231 | (bfd *, struct elf64_hppa_link_hash_table *, asection *); |
15bda425 | 232 | |
b34976b6 | 233 | static bfd_boolean count_dyn_reloc |
a03bd320 | 234 | (bfd *, struct elf64_hppa_link_hash_entry *, |
813c8a3c | 235 | int, asection *, int, bfd_vma, bfd_vma); |
15bda425 | 236 | |
b34976b6 | 237 | static bfd_boolean allocate_dynrel_entries |
a03bd320 | 238 | (struct elf_link_hash_entry *, void *); |
15bda425 | 239 | |
b34976b6 | 240 | static bfd_boolean elf64_hppa_finalize_dynreloc |
a03bd320 | 241 | (struct elf_link_hash_entry *, void *); |
15bda425 | 242 | |
b34976b6 | 243 | static bfd_boolean get_opd |
813c8a3c | 244 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 245 | |
b34976b6 | 246 | static bfd_boolean get_plt |
813c8a3c | 247 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 248 | |
b34976b6 | 249 | static bfd_boolean get_dlt |
813c8a3c | 250 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 251 | |
b34976b6 | 252 | static bfd_boolean get_stub |
813c8a3c | 253 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
15bda425 | 254 | |
3fab46d0 | 255 | static int elf64_hppa_elf_get_symbol_type |
813c8a3c | 256 | (Elf_Internal_Sym *, int); |
3fab46d0 | 257 | |
a03bd320 | 258 | /* Initialize an entry in the link hash table. */ |
15bda425 | 259 | |
a03bd320 DA |
260 | static struct bfd_hash_entry * |
261 | hppa64_link_hash_newfunc (struct bfd_hash_entry *entry, | |
262 | struct bfd_hash_table *table, | |
263 | const char *string) | |
15bda425 | 264 | { |
15bda425 JL |
265 | /* Allocate the structure if it has not already been allocated by a |
266 | subclass. */ | |
a03bd320 DA |
267 | if (entry == NULL) |
268 | { | |
269 | entry = bfd_hash_allocate (table, | |
270 | sizeof (struct elf64_hppa_link_hash_entry)); | |
271 | if (entry == NULL) | |
272 | return entry; | |
273 | } | |
15bda425 | 274 | |
15bda425 | 275 | /* Call the allocation method of the superclass. */ |
a03bd320 DA |
276 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
277 | if (entry != NULL) | |
278 | { | |
279 | struct elf64_hppa_link_hash_entry *hh; | |
15bda425 | 280 | |
a03bd320 DA |
281 | /* Initialize our local data. All zeros. */ |
282 | hh = hppa_elf_hash_entry (entry); | |
283 | memset (&hh->dlt_offset, 0, | |
284 | (sizeof (struct elf64_hppa_link_hash_entry) | |
285 | - offsetof (struct elf64_hppa_link_hash_entry, dlt_offset))); | |
286 | } | |
336549c1 | 287 | |
a03bd320 | 288 | return entry; |
15bda425 JL |
289 | } |
290 | ||
291 | /* Create the derived linker hash table. The PA64 ELF port uses this | |
292 | derived hash table to keep information specific to the PA ElF | |
293 | linker (without using static variables). */ | |
294 | ||
295 | static struct bfd_link_hash_table* | |
813c8a3c | 296 | elf64_hppa_hash_table_create (bfd *abfd) |
15bda425 | 297 | { |
a03bd320 DA |
298 | struct elf64_hppa_link_hash_table *htab; |
299 | bfd_size_type amt = sizeof (*htab); | |
15bda425 | 300 | |
a03bd320 DA |
301 | htab = bfd_zalloc (abfd, amt); |
302 | if (htab == NULL) | |
303 | return NULL; | |
15bda425 | 304 | |
a03bd320 DA |
305 | if (!_bfd_elf_link_hash_table_init (&htab->root, abfd, |
306 | hppa64_link_hash_newfunc, | |
4dfe6ac6 NC |
307 | sizeof (struct elf64_hppa_link_hash_entry), |
308 | HPPA64_ELF_DATA)) | |
a03bd320 DA |
309 | { |
310 | bfd_release (abfd, htab); | |
311 | return NULL; | |
312 | } | |
15bda425 | 313 | |
a03bd320 DA |
314 | htab->text_segment_base = (bfd_vma) -1; |
315 | htab->data_segment_base = (bfd_vma) -1; | |
15bda425 | 316 | |
a03bd320 | 317 | return &htab->root.root; |
15bda425 JL |
318 | } |
319 | \f | |
320 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. | |
321 | ||
322 | Additionally we set the default architecture and machine. */ | |
b34976b6 | 323 | static bfd_boolean |
813c8a3c | 324 | elf64_hppa_object_p (bfd *abfd) |
15bda425 | 325 | { |
24a5e751 L |
326 | Elf_Internal_Ehdr * i_ehdrp; |
327 | unsigned int flags; | |
d9634ba1 | 328 | |
24a5e751 L |
329 | i_ehdrp = elf_elfheader (abfd); |
330 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) | |
331 | { | |
6c21aa76 NC |
332 | /* GCC on hppa-linux produces binaries with OSABI=Linux, |
333 | but the kernel produces corefiles with OSABI=SysV. */ | |
d97a8924 DA |
334 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX |
335 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 336 | return FALSE; |
24a5e751 L |
337 | } |
338 | else | |
339 | { | |
d97a8924 DA |
340 | /* HPUX produces binaries with OSABI=HPUX, |
341 | but the kernel produces corefiles with OSABI=SysV. */ | |
342 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX | |
343 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ | |
b34976b6 | 344 | return FALSE; |
24a5e751 L |
345 | } |
346 | ||
347 | flags = i_ehdrp->e_flags; | |
d9634ba1 AM |
348 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
349 | { | |
350 | case EFA_PARISC_1_0: | |
351 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
352 | case EFA_PARISC_1_1: | |
353 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
354 | case EFA_PARISC_2_0: | |
d97a8924 DA |
355 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) |
356 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
357 | else | |
358 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
d9634ba1 AM |
359 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: |
360 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
361 | } | |
362 | /* Don't be fussy. */ | |
b34976b6 | 363 | return TRUE; |
15bda425 JL |
364 | } |
365 | ||
366 | /* Given section type (hdr->sh_type), return a boolean indicating | |
367 | whether or not the section is an elf64-hppa specific section. */ | |
b34976b6 | 368 | static bfd_boolean |
6dc132d9 L |
369 | elf64_hppa_section_from_shdr (bfd *abfd, |
370 | Elf_Internal_Shdr *hdr, | |
371 | const char *name, | |
372 | int shindex) | |
15bda425 JL |
373 | { |
374 | asection *newsect; | |
375 | ||
376 | switch (hdr->sh_type) | |
377 | { | |
378 | case SHT_PARISC_EXT: | |
379 | if (strcmp (name, ".PARISC.archext") != 0) | |
b34976b6 | 380 | return FALSE; |
15bda425 JL |
381 | break; |
382 | case SHT_PARISC_UNWIND: | |
383 | if (strcmp (name, ".PARISC.unwind") != 0) | |
b34976b6 | 384 | return FALSE; |
15bda425 JL |
385 | break; |
386 | case SHT_PARISC_DOC: | |
387 | case SHT_PARISC_ANNOT: | |
388 | default: | |
b34976b6 | 389 | return FALSE; |
15bda425 JL |
390 | } |
391 | ||
6dc132d9 | 392 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 393 | return FALSE; |
15bda425 JL |
394 | newsect = hdr->bfd_section; |
395 | ||
b34976b6 | 396 | return TRUE; |
15bda425 JL |
397 | } |
398 | ||
15bda425 JL |
399 | /* SEC is a section containing relocs for an input BFD when linking; return |
400 | a suitable section for holding relocs in the output BFD for a link. */ | |
401 | ||
b34976b6 | 402 | static bfd_boolean |
813c8a3c DA |
403 | get_reloc_section (bfd *abfd, |
404 | struct elf64_hppa_link_hash_table *hppa_info, | |
405 | asection *sec) | |
15bda425 JL |
406 | { |
407 | const char *srel_name; | |
408 | asection *srel; | |
409 | bfd *dynobj; | |
410 | ||
411 | srel_name = (bfd_elf_string_from_elf_section | |
412 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
413 | elf_section_data(sec)->rel_hdr.sh_name)); | |
414 | if (srel_name == NULL) | |
b34976b6 | 415 | return FALSE; |
15bda425 | 416 | |
0112cd26 | 417 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") |
15bda425 | 418 | && strcmp (bfd_get_section_name (abfd, sec), |
0112cd26 NC |
419 | srel_name + 5) == 0) |
420 | || (CONST_STRNEQ (srel_name, ".rel") | |
15bda425 | 421 | && strcmp (bfd_get_section_name (abfd, sec), |
0112cd26 | 422 | srel_name + 4) == 0)); |
15bda425 JL |
423 | |
424 | dynobj = hppa_info->root.dynobj; | |
425 | if (!dynobj) | |
426 | hppa_info->root.dynobj = dynobj = abfd; | |
427 | ||
428 | srel = bfd_get_section_by_name (dynobj, srel_name); | |
429 | if (srel == NULL) | |
430 | { | |
3496cb2a L |
431 | srel = bfd_make_section_with_flags (dynobj, srel_name, |
432 | (SEC_ALLOC | |
433 | | SEC_LOAD | |
434 | | SEC_HAS_CONTENTS | |
435 | | SEC_IN_MEMORY | |
436 | | SEC_LINKER_CREATED | |
437 | | SEC_READONLY)); | |
15bda425 | 438 | if (srel == NULL |
15bda425 | 439 | || !bfd_set_section_alignment (dynobj, srel, 3)) |
b34976b6 | 440 | return FALSE; |
15bda425 JL |
441 | } |
442 | ||
443 | hppa_info->other_rel_sec = srel; | |
b34976b6 | 444 | return TRUE; |
15bda425 JL |
445 | } |
446 | ||
fe8bc63d | 447 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
15bda425 JL |
448 | |
449 | We use this to keep a record of all the FPTR relocations against a | |
450 | particular symbol so that we can create FPTR relocations in the | |
451 | output file. */ | |
452 | ||
b34976b6 | 453 | static bfd_boolean |
813c8a3c | 454 | count_dyn_reloc (bfd *abfd, |
a03bd320 | 455 | struct elf64_hppa_link_hash_entry *hh, |
813c8a3c DA |
456 | int type, |
457 | asection *sec, | |
458 | int sec_symndx, | |
459 | bfd_vma offset, | |
460 | bfd_vma addend) | |
15bda425 JL |
461 | { |
462 | struct elf64_hppa_dyn_reloc_entry *rent; | |
463 | ||
464 | rent = (struct elf64_hppa_dyn_reloc_entry *) | |
dc810e39 | 465 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
15bda425 | 466 | if (!rent) |
b34976b6 | 467 | return FALSE; |
15bda425 | 468 | |
a03bd320 | 469 | rent->next = hh->reloc_entries; |
15bda425 JL |
470 | rent->type = type; |
471 | rent->sec = sec; | |
472 | rent->sec_symndx = sec_symndx; | |
473 | rent->offset = offset; | |
474 | rent->addend = addend; | |
a03bd320 | 475 | hh->reloc_entries = rent; |
15bda425 | 476 | |
b34976b6 | 477 | return TRUE; |
15bda425 JL |
478 | } |
479 | ||
a03bd320 DA |
480 | /* Return a pointer to the local DLT, PLT and OPD reference counts |
481 | for ABFD. Returns NULL if the storage allocation fails. */ | |
482 | ||
483 | static bfd_signed_vma * | |
484 | hppa64_elf_local_refcounts (bfd *abfd) | |
485 | { | |
486 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
487 | bfd_signed_vma *local_refcounts; | |
488 | ||
489 | local_refcounts = elf_local_got_refcounts (abfd); | |
490 | if (local_refcounts == NULL) | |
491 | { | |
492 | bfd_size_type size; | |
493 | ||
494 | /* Allocate space for local DLT, PLT and OPD reference | |
495 | counts. Done this way to save polluting elf_obj_tdata | |
496 | with another target specific pointer. */ | |
497 | size = symtab_hdr->sh_info; | |
498 | size *= 3 * sizeof (bfd_signed_vma); | |
499 | local_refcounts = bfd_zalloc (abfd, size); | |
500 | elf_local_got_refcounts (abfd) = local_refcounts; | |
501 | } | |
502 | return local_refcounts; | |
503 | } | |
504 | ||
15bda425 JL |
505 | /* Scan the RELOCS and record the type of dynamic entries that each |
506 | referenced symbol needs. */ | |
507 | ||
b34976b6 | 508 | static bfd_boolean |
813c8a3c DA |
509 | elf64_hppa_check_relocs (bfd *abfd, |
510 | struct bfd_link_info *info, | |
511 | asection *sec, | |
512 | const Elf_Internal_Rela *relocs) | |
15bda425 JL |
513 | { |
514 | struct elf64_hppa_link_hash_table *hppa_info; | |
515 | const Elf_Internal_Rela *relend; | |
516 | Elf_Internal_Shdr *symtab_hdr; | |
517 | const Elf_Internal_Rela *rel; | |
518 | asection *dlt, *plt, *stubs; | |
519 | char *buf; | |
520 | size_t buf_len; | |
4fbb74a6 | 521 | unsigned int sec_symndx; |
15bda425 | 522 | |
1049f94e | 523 | if (info->relocatable) |
b34976b6 | 524 | return TRUE; |
15bda425 JL |
525 | |
526 | /* If this is the first dynamic object found in the link, create | |
527 | the special sections required for dynamic linking. */ | |
528 | if (! elf_hash_table (info)->dynamic_sections_created) | |
529 | { | |
45d6a902 | 530 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
b34976b6 | 531 | return FALSE; |
15bda425 JL |
532 | } |
533 | ||
a03bd320 | 534 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
535 | if (hppa_info == NULL) |
536 | return FALSE; | |
15bda425 JL |
537 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
538 | ||
539 | /* If necessary, build a new table holding section symbols indices | |
6cdc0ccc | 540 | for this BFD. */ |
fe8bc63d | 541 | |
15bda425 JL |
542 | if (info->shared && hppa_info->section_syms_bfd != abfd) |
543 | { | |
832d951b | 544 | unsigned long i; |
9ad5cbcf | 545 | unsigned int highest_shndx; |
6cdc0ccc AM |
546 | Elf_Internal_Sym *local_syms = NULL; |
547 | Elf_Internal_Sym *isym, *isymend; | |
dc810e39 | 548 | bfd_size_type amt; |
15bda425 JL |
549 | |
550 | /* We're done with the old cache of section index to section symbol | |
551 | index information. Free it. | |
552 | ||
553 | ?!? Note we leak the last section_syms array. Presumably we | |
554 | could free it in one of the later routines in this file. */ | |
555 | if (hppa_info->section_syms) | |
556 | free (hppa_info->section_syms); | |
557 | ||
6cdc0ccc AM |
558 | /* Read this BFD's local symbols. */ |
559 | if (symtab_hdr->sh_info != 0) | |
47b7c2db | 560 | { |
6cdc0ccc AM |
561 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
562 | if (local_syms == NULL) | |
563 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
564 | symtab_hdr->sh_info, 0, | |
565 | NULL, NULL, NULL); | |
566 | if (local_syms == NULL) | |
b34976b6 | 567 | return FALSE; |
9ad5cbcf AM |
568 | } |
569 | ||
6cdc0ccc | 570 | /* Record the highest section index referenced by the local symbols. */ |
15bda425 | 571 | highest_shndx = 0; |
6cdc0ccc AM |
572 | isymend = local_syms + symtab_hdr->sh_info; |
573 | for (isym = local_syms; isym < isymend; isym++) | |
15bda425 | 574 | { |
4fbb74a6 AM |
575 | if (isym->st_shndx > highest_shndx |
576 | && isym->st_shndx < SHN_LORESERVE) | |
15bda425 JL |
577 | highest_shndx = isym->st_shndx; |
578 | } | |
579 | ||
15bda425 JL |
580 | /* Allocate an array to hold the section index to section symbol index |
581 | mapping. Bump by one since we start counting at zero. */ | |
582 | highest_shndx++; | |
dc810e39 AM |
583 | amt = highest_shndx; |
584 | amt *= sizeof (int); | |
585 | hppa_info->section_syms = (int *) bfd_malloc (amt); | |
15bda425 JL |
586 | |
587 | /* Now walk the local symbols again. If we find a section symbol, | |
588 | record the index of the symbol into the section_syms array. */ | |
6cdc0ccc | 589 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
15bda425 JL |
590 | { |
591 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
592 | hppa_info->section_syms[isym->st_shndx] = i; | |
593 | } | |
594 | ||
6cdc0ccc AM |
595 | /* We are finished with the local symbols. */ |
596 | if (local_syms != NULL | |
597 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
598 | { | |
599 | if (! info->keep_memory) | |
600 | free (local_syms); | |
601 | else | |
602 | { | |
603 | /* Cache the symbols for elf_link_input_bfd. */ | |
604 | symtab_hdr->contents = (unsigned char *) local_syms; | |
605 | } | |
606 | } | |
15bda425 JL |
607 | |
608 | /* Record which BFD we built the section_syms mapping for. */ | |
609 | hppa_info->section_syms_bfd = abfd; | |
610 | } | |
611 | ||
612 | /* Record the symbol index for this input section. We may need it for | |
613 | relocations when building shared libraries. When not building shared | |
614 | libraries this value is never really used, but assign it to zero to | |
615 | prevent out of bounds memory accesses in other routines. */ | |
616 | if (info->shared) | |
617 | { | |
618 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
619 | ||
620 | /* If we did not find a section symbol for this section, then | |
621 | something went terribly wrong above. */ | |
4fbb74a6 | 622 | if (sec_symndx == SHN_BAD) |
b34976b6 | 623 | return FALSE; |
15bda425 | 624 | |
4fbb74a6 AM |
625 | if (sec_symndx < SHN_LORESERVE) |
626 | sec_symndx = hppa_info->section_syms[sec_symndx]; | |
627 | else | |
628 | sec_symndx = 0; | |
15bda425 JL |
629 | } |
630 | else | |
631 | sec_symndx = 0; | |
fe8bc63d | 632 | |
15bda425 JL |
633 | dlt = plt = stubs = NULL; |
634 | buf = NULL; | |
635 | buf_len = 0; | |
636 | ||
637 | relend = relocs + sec->reloc_count; | |
638 | for (rel = relocs; rel < relend; ++rel) | |
639 | { | |
560e09e9 NC |
640 | enum |
641 | { | |
642 | NEED_DLT = 1, | |
643 | NEED_PLT = 2, | |
644 | NEED_STUB = 4, | |
645 | NEED_OPD = 8, | |
646 | NEED_DYNREL = 16, | |
647 | }; | |
15bda425 | 648 | |
15bda425 | 649 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); |
a03bd320 | 650 | struct elf64_hppa_link_hash_entry *hh; |
15bda425 | 651 | int need_entry; |
b34976b6 | 652 | bfd_boolean maybe_dynamic; |
15bda425 JL |
653 | int dynrel_type = R_PARISC_NONE; |
654 | static reloc_howto_type *howto; | |
655 | ||
656 | if (r_symndx >= symtab_hdr->sh_info) | |
657 | { | |
658 | /* We're dealing with a global symbol -- find its hash entry | |
659 | and mark it as being referenced. */ | |
660 | long indx = r_symndx - symtab_hdr->sh_info; | |
a03bd320 DA |
661 | hh = hppa_elf_hash_entry (elf_sym_hashes (abfd)[indx]); |
662 | while (hh->eh.root.type == bfd_link_hash_indirect | |
663 | || hh->eh.root.type == bfd_link_hash_warning) | |
664 | hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); | |
15bda425 | 665 | |
a03bd320 | 666 | hh->eh.ref_regular = 1; |
15bda425 | 667 | } |
a03bd320 DA |
668 | else |
669 | hh = NULL; | |
15bda425 JL |
670 | |
671 | /* We can only get preliminary data on whether a symbol is | |
672 | locally or externally defined, as not all of the input files | |
673 | have yet been processed. Do something with what we know, as | |
674 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 675 | maybe_dynamic = FALSE; |
a03bd320 | 676 | if (hh && ((info->shared |
f5385ebf AM |
677 | && (!info->symbolic |
678 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
a03bd320 DA |
679 | || !hh->eh.def_regular |
680 | || hh->eh.root.type == bfd_link_hash_defweak)) | |
b34976b6 | 681 | maybe_dynamic = TRUE; |
15bda425 JL |
682 | |
683 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); | |
684 | need_entry = 0; | |
685 | switch (howto->type) | |
686 | { | |
687 | /* These are simple indirect references to symbols through the | |
688 | DLT. We need to create a DLT entry for any symbols which | |
689 | appears in a DLTIND relocation. */ | |
690 | case R_PARISC_DLTIND21L: | |
691 | case R_PARISC_DLTIND14R: | |
692 | case R_PARISC_DLTIND14F: | |
693 | case R_PARISC_DLTIND14WR: | |
694 | case R_PARISC_DLTIND14DR: | |
695 | need_entry = NEED_DLT; | |
696 | break; | |
697 | ||
698 | /* ?!? These need a DLT entry. But I have no idea what to do with | |
699 | the "link time TP value. */ | |
700 | case R_PARISC_LTOFF_TP21L: | |
701 | case R_PARISC_LTOFF_TP14R: | |
702 | case R_PARISC_LTOFF_TP14F: | |
703 | case R_PARISC_LTOFF_TP64: | |
704 | case R_PARISC_LTOFF_TP14WR: | |
705 | case R_PARISC_LTOFF_TP14DR: | |
706 | case R_PARISC_LTOFF_TP16F: | |
707 | case R_PARISC_LTOFF_TP16WF: | |
708 | case R_PARISC_LTOFF_TP16DF: | |
709 | need_entry = NEED_DLT; | |
710 | break; | |
711 | ||
712 | /* These are function calls. Depending on their precise target we | |
713 | may need to make a stub for them. The stub uses the PLT, so we | |
714 | need to create PLT entries for these symbols too. */ | |
832d951b | 715 | case R_PARISC_PCREL12F: |
15bda425 JL |
716 | case R_PARISC_PCREL17F: |
717 | case R_PARISC_PCREL22F: | |
718 | case R_PARISC_PCREL32: | |
719 | case R_PARISC_PCREL64: | |
720 | case R_PARISC_PCREL21L: | |
721 | case R_PARISC_PCREL17R: | |
722 | case R_PARISC_PCREL17C: | |
723 | case R_PARISC_PCREL14R: | |
724 | case R_PARISC_PCREL14F: | |
725 | case R_PARISC_PCREL22C: | |
726 | case R_PARISC_PCREL14WR: | |
727 | case R_PARISC_PCREL14DR: | |
728 | case R_PARISC_PCREL16F: | |
729 | case R_PARISC_PCREL16WF: | |
730 | case R_PARISC_PCREL16DF: | |
a03bd320 DA |
731 | /* Function calls might need to go through the .plt, and |
732 | might need a long branch stub. */ | |
733 | if (hh != NULL && hh->eh.type != STT_PARISC_MILLI) | |
734 | need_entry = (NEED_PLT | NEED_STUB); | |
735 | else | |
736 | need_entry = 0; | |
15bda425 JL |
737 | break; |
738 | ||
739 | case R_PARISC_PLTOFF21L: | |
740 | case R_PARISC_PLTOFF14R: | |
741 | case R_PARISC_PLTOFF14F: | |
742 | case R_PARISC_PLTOFF14WR: | |
743 | case R_PARISC_PLTOFF14DR: | |
744 | case R_PARISC_PLTOFF16F: | |
745 | case R_PARISC_PLTOFF16WF: | |
746 | case R_PARISC_PLTOFF16DF: | |
747 | need_entry = (NEED_PLT); | |
748 | break; | |
749 | ||
750 | case R_PARISC_DIR64: | |
751 | if (info->shared || maybe_dynamic) | |
752 | need_entry = (NEED_DYNREL); | |
753 | dynrel_type = R_PARISC_DIR64; | |
754 | break; | |
755 | ||
756 | /* This is an indirect reference through the DLT to get the address | |
757 | of a OPD descriptor. Thus we need to make a DLT entry that points | |
758 | to an OPD entry. */ | |
759 | case R_PARISC_LTOFF_FPTR21L: | |
760 | case R_PARISC_LTOFF_FPTR14R: | |
761 | case R_PARISC_LTOFF_FPTR14WR: | |
762 | case R_PARISC_LTOFF_FPTR14DR: | |
763 | case R_PARISC_LTOFF_FPTR32: | |
764 | case R_PARISC_LTOFF_FPTR64: | |
765 | case R_PARISC_LTOFF_FPTR16F: | |
766 | case R_PARISC_LTOFF_FPTR16WF: | |
767 | case R_PARISC_LTOFF_FPTR16DF: | |
768 | if (info->shared || maybe_dynamic) | |
a03bd320 | 769 | need_entry = (NEED_DLT | NEED_OPD | NEED_PLT); |
15bda425 | 770 | else |
a03bd320 | 771 | need_entry = (NEED_DLT | NEED_OPD | NEED_PLT); |
15bda425 JL |
772 | dynrel_type = R_PARISC_FPTR64; |
773 | break; | |
774 | ||
775 | /* This is a simple OPD entry. */ | |
776 | case R_PARISC_FPTR64: | |
777 | if (info->shared || maybe_dynamic) | |
a03bd320 | 778 | need_entry = (NEED_OPD | NEED_PLT | NEED_DYNREL); |
15bda425 | 779 | else |
a03bd320 | 780 | need_entry = (NEED_OPD | NEED_PLT); |
15bda425 JL |
781 | dynrel_type = R_PARISC_FPTR64; |
782 | break; | |
783 | ||
784 | /* Add more cases as needed. */ | |
785 | } | |
786 | ||
787 | if (!need_entry) | |
788 | continue; | |
789 | ||
a03bd320 DA |
790 | if (hh) |
791 | { | |
792 | /* Stash away enough information to be able to find this symbol | |
793 | regardless of whether or not it is local or global. */ | |
794 | hh->owner = abfd; | |
795 | hh->sym_indx = r_symndx; | |
796 | } | |
15bda425 | 797 | |
15bda425 JL |
798 | /* Create what's needed. */ |
799 | if (need_entry & NEED_DLT) | |
800 | { | |
a03bd320 DA |
801 | /* Allocate space for a DLT entry, as well as a dynamic |
802 | relocation for this entry. */ | |
15bda425 JL |
803 | if (! hppa_info->dlt_sec |
804 | && ! get_dlt (abfd, info, hppa_info)) | |
805 | goto err_out; | |
a03bd320 DA |
806 | |
807 | if (hh != NULL) | |
808 | { | |
809 | hh->want_dlt = 1; | |
810 | hh->eh.got.refcount += 1; | |
811 | } | |
812 | else | |
813 | { | |
814 | bfd_signed_vma *local_dlt_refcounts; | |
815 | ||
816 | /* This is a DLT entry for a local symbol. */ | |
817 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); | |
818 | if (local_dlt_refcounts == NULL) | |
819 | return FALSE; | |
820 | local_dlt_refcounts[r_symndx] += 1; | |
821 | } | |
15bda425 JL |
822 | } |
823 | ||
824 | if (need_entry & NEED_PLT) | |
825 | { | |
826 | if (! hppa_info->plt_sec | |
827 | && ! get_plt (abfd, info, hppa_info)) | |
828 | goto err_out; | |
a03bd320 DA |
829 | |
830 | if (hh != NULL) | |
831 | { | |
832 | hh->want_plt = 1; | |
833 | hh->eh.needs_plt = 1; | |
834 | hh->eh.plt.refcount += 1; | |
835 | } | |
836 | else | |
837 | { | |
838 | bfd_signed_vma *local_dlt_refcounts; | |
839 | bfd_signed_vma *local_plt_refcounts; | |
840 | ||
841 | /* This is a PLT entry for a local symbol. */ | |
842 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); | |
843 | if (local_dlt_refcounts == NULL) | |
844 | return FALSE; | |
845 | local_plt_refcounts = local_dlt_refcounts + symtab_hdr->sh_info; | |
846 | local_plt_refcounts[r_symndx] += 1; | |
847 | } | |
15bda425 JL |
848 | } |
849 | ||
850 | if (need_entry & NEED_STUB) | |
851 | { | |
852 | if (! hppa_info->stub_sec | |
853 | && ! get_stub (abfd, info, hppa_info)) | |
854 | goto err_out; | |
a03bd320 DA |
855 | if (hh) |
856 | hh->want_stub = 1; | |
15bda425 JL |
857 | } |
858 | ||
859 | if (need_entry & NEED_OPD) | |
860 | { | |
861 | if (! hppa_info->opd_sec | |
862 | && ! get_opd (abfd, info, hppa_info)) | |
863 | goto err_out; | |
864 | ||
a03bd320 DA |
865 | /* FPTRs are not allocated by the dynamic linker for PA64, |
866 | though it is possible that will change in the future. */ | |
fe8bc63d | 867 | |
a03bd320 DA |
868 | if (hh != NULL) |
869 | hh->want_opd = 1; | |
870 | else | |
871 | { | |
872 | bfd_signed_vma *local_dlt_refcounts; | |
873 | bfd_signed_vma *local_opd_refcounts; | |
874 | ||
875 | /* This is a OPD for a local symbol. */ | |
876 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); | |
877 | if (local_dlt_refcounts == NULL) | |
878 | return FALSE; | |
879 | local_opd_refcounts = (local_dlt_refcounts | |
880 | + 2 * symtab_hdr->sh_info); | |
881 | local_opd_refcounts[r_symndx] += 1; | |
882 | } | |
15bda425 JL |
883 | } |
884 | ||
885 | /* Add a new dynamic relocation to the chain of dynamic | |
886 | relocations for this symbol. */ | |
887 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
888 | { | |
889 | if (! hppa_info->other_rel_sec | |
890 | && ! get_reloc_section (abfd, hppa_info, sec)) | |
891 | goto err_out; | |
892 | ||
a03bd320 DA |
893 | /* Count dynamic relocations against global symbols. */ |
894 | if (hh != NULL | |
895 | && !count_dyn_reloc (abfd, hh, dynrel_type, sec, | |
896 | sec_symndx, rel->r_offset, rel->r_addend)) | |
15bda425 JL |
897 | goto err_out; |
898 | ||
899 | /* If we are building a shared library and we just recorded | |
900 | a dynamic R_PARISC_FPTR64 relocation, then make sure the | |
901 | section symbol for this section ends up in the dynamic | |
902 | symbol table. */ | |
903 | if (info->shared && dynrel_type == R_PARISC_FPTR64 | |
c152c796 | 904 | && ! (bfd_elf_link_record_local_dynamic_symbol |
15bda425 | 905 | (info, abfd, sec_symndx))) |
b34976b6 | 906 | return FALSE; |
15bda425 JL |
907 | } |
908 | } | |
909 | ||
910 | if (buf) | |
911 | free (buf); | |
b34976b6 | 912 | return TRUE; |
15bda425 JL |
913 | |
914 | err_out: | |
915 | if (buf) | |
916 | free (buf); | |
b34976b6 | 917 | return FALSE; |
15bda425 JL |
918 | } |
919 | ||
920 | struct elf64_hppa_allocate_data | |
921 | { | |
922 | struct bfd_link_info *info; | |
923 | bfd_size_type ofs; | |
924 | }; | |
925 | ||
926 | /* Should we do dynamic things to this symbol? */ | |
927 | ||
b34976b6 | 928 | static bfd_boolean |
a03bd320 | 929 | elf64_hppa_dynamic_symbol_p (struct elf_link_hash_entry *eh, |
813c8a3c | 930 | struct bfd_link_info *info) |
15bda425 | 931 | { |
986a241f RH |
932 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
933 | and relocations that retrieve a function descriptor? Assume the | |
934 | worst for now. */ | |
a03bd320 | 935 | if (_bfd_elf_dynamic_symbol_p (eh, info, 1)) |
986a241f RH |
936 | { |
937 | /* ??? Why is this here and not elsewhere is_local_label_name. */ | |
a03bd320 | 938 | if (eh->root.root.string[0] == '$' && eh->root.root.string[1] == '$') |
986a241f | 939 | return FALSE; |
15bda425 | 940 | |
986a241f RH |
941 | return TRUE; |
942 | } | |
943 | else | |
b34976b6 | 944 | return FALSE; |
15bda425 JL |
945 | } |
946 | ||
4cc11e76 | 947 | /* Mark all functions exported by this file so that we can later allocate |
15bda425 JL |
948 | entries in .opd for them. */ |
949 | ||
b34976b6 | 950 | static bfd_boolean |
a03bd320 | 951 | elf64_hppa_mark_exported_functions (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 952 | { |
a03bd320 | 953 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
954 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
955 | struct elf64_hppa_link_hash_table *hppa_info; | |
956 | ||
a03bd320 | 957 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
958 | if (hppa_info == NULL) |
959 | return FALSE; | |
15bda425 | 960 | |
a03bd320 DA |
961 | if (eh->root.type == bfd_link_hash_warning) |
962 | eh = (struct elf_link_hash_entry *) eh->root.u.i.link; | |
e92d460e | 963 | |
a03bd320 DA |
964 | if (eh |
965 | && (eh->root.type == bfd_link_hash_defined | |
966 | || eh->root.type == bfd_link_hash_defweak) | |
967 | && eh->root.u.def.section->output_section != NULL | |
968 | && eh->type == STT_FUNC) | |
15bda425 | 969 | { |
15bda425 JL |
970 | if (! hppa_info->opd_sec |
971 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) | |
b34976b6 | 972 | return FALSE; |
15bda425 | 973 | |
a03bd320 DA |
974 | hh->want_opd = 1; |
975 | ||
832d951b | 976 | /* Put a flag here for output_symbol_hook. */ |
a03bd320 DA |
977 | hh->st_shndx = -1; |
978 | eh->needs_plt = 1; | |
15bda425 JL |
979 | } |
980 | ||
b34976b6 | 981 | return TRUE; |
15bda425 JL |
982 | } |
983 | ||
984 | /* Allocate space for a DLT entry. */ | |
985 | ||
b34976b6 | 986 | static bfd_boolean |
a03bd320 | 987 | allocate_global_data_dlt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 988 | { |
a03bd320 | 989 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
990 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
991 | ||
a03bd320 | 992 | if (hh->want_dlt) |
15bda425 | 993 | { |
15bda425 JL |
994 | if (x->info->shared) |
995 | { | |
996 | /* Possibly add the symbol to the local dynamic symbol | |
997 | table since we might need to create a dynamic relocation | |
998 | against it. */ | |
a03bd320 | 999 | if (eh->dynindx == -1 && eh->type != STT_PARISC_MILLI) |
15bda425 | 1000 | { |
a03bd320 | 1001 | bfd *owner = eh->root.u.def.section->owner; |
15bda425 | 1002 | |
c152c796 | 1003 | if (! (bfd_elf_link_record_local_dynamic_symbol |
a03bd320 | 1004 | (x->info, owner, hh->sym_indx))) |
b34976b6 | 1005 | return FALSE; |
15bda425 JL |
1006 | } |
1007 | } | |
1008 | ||
a03bd320 | 1009 | hh->dlt_offset = x->ofs; |
15bda425 JL |
1010 | x->ofs += DLT_ENTRY_SIZE; |
1011 | } | |
b34976b6 | 1012 | return TRUE; |
15bda425 JL |
1013 | } |
1014 | ||
1015 | /* Allocate space for a DLT.PLT entry. */ | |
1016 | ||
b34976b6 | 1017 | static bfd_boolean |
a03bd320 | 1018 | allocate_global_data_plt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1019 | { |
a03bd320 | 1020 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
4dfe6ac6 | 1021 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *) data; |
15bda425 | 1022 | |
a03bd320 DA |
1023 | if (hh->want_plt |
1024 | && elf64_hppa_dynamic_symbol_p (eh, x->info) | |
1025 | && !((eh->root.type == bfd_link_hash_defined | |
1026 | || eh->root.type == bfd_link_hash_defweak) | |
1027 | && eh->root.u.def.section->output_section != NULL)) | |
15bda425 | 1028 | { |
a03bd320 | 1029 | hh->plt_offset = x->ofs; |
15bda425 | 1030 | x->ofs += PLT_ENTRY_SIZE; |
a03bd320 | 1031 | if (hh->plt_offset < 0x2000) |
4dfe6ac6 NC |
1032 | { |
1033 | struct elf64_hppa_link_hash_table *hppa_info; | |
1034 | ||
1035 | hppa_info = hppa_link_hash_table (x->info); | |
1036 | if (hppa_info == NULL) | |
1037 | return FALSE; | |
1038 | ||
1039 | hppa_info->gp_offset = hh->plt_offset; | |
1040 | } | |
15bda425 JL |
1041 | } |
1042 | else | |
a03bd320 | 1043 | hh->want_plt = 0; |
15bda425 | 1044 | |
b34976b6 | 1045 | return TRUE; |
15bda425 JL |
1046 | } |
1047 | ||
1048 | /* Allocate space for a STUB entry. */ | |
1049 | ||
b34976b6 | 1050 | static bfd_boolean |
a03bd320 | 1051 | allocate_global_data_stub (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1052 | { |
a03bd320 | 1053 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1054 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
1055 | ||
a03bd320 DA |
1056 | if (hh->want_stub |
1057 | && elf64_hppa_dynamic_symbol_p (eh, x->info) | |
1058 | && !((eh->root.type == bfd_link_hash_defined | |
1059 | || eh->root.type == bfd_link_hash_defweak) | |
1060 | && eh->root.u.def.section->output_section != NULL)) | |
15bda425 | 1061 | { |
a03bd320 | 1062 | hh->stub_offset = x->ofs; |
15bda425 JL |
1063 | x->ofs += sizeof (plt_stub); |
1064 | } | |
1065 | else | |
a03bd320 | 1066 | hh->want_stub = 0; |
b34976b6 | 1067 | return TRUE; |
15bda425 JL |
1068 | } |
1069 | ||
1070 | /* Allocate space for a FPTR entry. */ | |
1071 | ||
b34976b6 | 1072 | static bfd_boolean |
a03bd320 | 1073 | allocate_global_data_opd (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1074 | { |
a03bd320 | 1075 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1076 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
1077 | ||
a03bd320 | 1078 | if (hh && hh->want_opd) |
15bda425 | 1079 | { |
a03bd320 DA |
1080 | while (hh->eh.root.type == bfd_link_hash_indirect |
1081 | || hh->eh.root.type == bfd_link_hash_warning) | |
1082 | hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); | |
15bda425 JL |
1083 | |
1084 | /* We never need an opd entry for a symbol which is not | |
1085 | defined by this output file. */ | |
a03bd320 DA |
1086 | if (hh && (hh->eh.root.type == bfd_link_hash_undefined |
1087 | || hh->eh.root.type == bfd_link_hash_undefweak | |
1088 | || hh->eh.root.u.def.section->output_section == NULL)) | |
1089 | hh->want_opd = 0; | |
15bda425 JL |
1090 | |
1091 | /* If we are creating a shared library, took the address of a local | |
1092 | function or might export this function from this object file, then | |
1093 | we have to create an opd descriptor. */ | |
1094 | else if (x->info->shared | |
a03bd320 DA |
1095 | || hh == NULL |
1096 | || (hh->eh.dynindx == -1 && hh->eh.type != STT_PARISC_MILLI) | |
1097 | || (hh->eh.root.type == bfd_link_hash_defined | |
1098 | || hh->eh.root.type == bfd_link_hash_defweak)) | |
15bda425 JL |
1099 | { |
1100 | /* If we are creating a shared library, then we will have to | |
1101 | create a runtime relocation for the symbol to properly | |
1102 | initialize the .opd entry. Make sure the symbol gets | |
1103 | added to the dynamic symbol table. */ | |
1104 | if (x->info->shared | |
a03bd320 | 1105 | && (hh == NULL || (hh->eh.dynindx == -1))) |
15bda425 JL |
1106 | { |
1107 | bfd *owner; | |
adfef0bd | 1108 | /* PR 6511: Default to using the dynamic symbol table. */ |
a03bd320 | 1109 | owner = (hh->owner ? hh->owner: eh->root.u.def.section->owner); |
15bda425 | 1110 | |
c152c796 | 1111 | if (!bfd_elf_link_record_local_dynamic_symbol |
a03bd320 | 1112 | (x->info, owner, hh->sym_indx)) |
b34976b6 | 1113 | return FALSE; |
15bda425 JL |
1114 | } |
1115 | ||
1116 | /* This may not be necessary or desirable anymore now that | |
1117 | we have some support for dealing with section symbols | |
1118 | in dynamic relocs. But name munging does make the result | |
1119 | much easier to debug. ie, the EPLT reloc will reference | |
1120 | a symbol like .foobar, instead of .text + offset. */ | |
a03bd320 | 1121 | if (x->info->shared && eh) |
15bda425 JL |
1122 | { |
1123 | char *new_name; | |
1124 | struct elf_link_hash_entry *nh; | |
1125 | ||
a03bd320 | 1126 | new_name = alloca (strlen (eh->root.root.string) + 2); |
15bda425 | 1127 | new_name[0] = '.'; |
a03bd320 | 1128 | strcpy (new_name + 1, eh->root.root.string); |
15bda425 JL |
1129 | |
1130 | nh = elf_link_hash_lookup (elf_hash_table (x->info), | |
b34976b6 | 1131 | new_name, TRUE, TRUE, TRUE); |
15bda425 | 1132 | |
a03bd320 DA |
1133 | nh->root.type = eh->root.type; |
1134 | nh->root.u.def.value = eh->root.u.def.value; | |
1135 | nh->root.u.def.section = eh->root.u.def.section; | |
15bda425 | 1136 | |
c152c796 | 1137 | if (! bfd_elf_link_record_dynamic_symbol (x->info, nh)) |
b34976b6 | 1138 | return FALSE; |
15bda425 JL |
1139 | |
1140 | } | |
a03bd320 | 1141 | hh->opd_offset = x->ofs; |
15bda425 JL |
1142 | x->ofs += OPD_ENTRY_SIZE; |
1143 | } | |
1144 | ||
1145 | /* Otherwise we do not need an opd entry. */ | |
1146 | else | |
a03bd320 | 1147 | hh->want_opd = 0; |
15bda425 | 1148 | } |
b34976b6 | 1149 | return TRUE; |
15bda425 JL |
1150 | } |
1151 | ||
1152 | /* HP requires the EI_OSABI field to be filled in. The assignment to | |
1153 | EI_ABIVERSION may not be strictly necessary. */ | |
1154 | ||
1155 | static void | |
813c8a3c DA |
1156 | elf64_hppa_post_process_headers (bfd *abfd, |
1157 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
15bda425 JL |
1158 | { |
1159 | Elf_Internal_Ehdr * i_ehdrp; | |
1160 | ||
1161 | i_ehdrp = elf_elfheader (abfd); | |
d1036acb L |
1162 | |
1163 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
1164 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
15bda425 JL |
1165 | } |
1166 | ||
1167 | /* Create function descriptor section (.opd). This section is called .opd | |
4cc11e76 | 1168 | because it contains "official procedure descriptors". The "official" |
15bda425 JL |
1169 | refers to the fact that these descriptors are used when taking the address |
1170 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1171 | ||
b34976b6 | 1172 | static bfd_boolean |
813c8a3c DA |
1173 | get_opd (bfd *abfd, |
1174 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1175 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1176 | { |
1177 | asection *opd; | |
1178 | bfd *dynobj; | |
1179 | ||
1180 | opd = hppa_info->opd_sec; | |
1181 | if (!opd) | |
1182 | { | |
1183 | dynobj = hppa_info->root.dynobj; | |
1184 | if (!dynobj) | |
1185 | hppa_info->root.dynobj = dynobj = abfd; | |
1186 | ||
3496cb2a L |
1187 | opd = bfd_make_section_with_flags (dynobj, ".opd", |
1188 | (SEC_ALLOC | |
1189 | | SEC_LOAD | |
1190 | | SEC_HAS_CONTENTS | |
1191 | | SEC_IN_MEMORY | |
1192 | | SEC_LINKER_CREATED)); | |
15bda425 | 1193 | if (!opd |
15bda425 JL |
1194 | || !bfd_set_section_alignment (abfd, opd, 3)) |
1195 | { | |
1196 | BFD_ASSERT (0); | |
b34976b6 | 1197 | return FALSE; |
15bda425 JL |
1198 | } |
1199 | ||
1200 | hppa_info->opd_sec = opd; | |
1201 | } | |
1202 | ||
b34976b6 | 1203 | return TRUE; |
15bda425 JL |
1204 | } |
1205 | ||
1206 | /* Create the PLT section. */ | |
1207 | ||
b34976b6 | 1208 | static bfd_boolean |
813c8a3c DA |
1209 | get_plt (bfd *abfd, |
1210 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1211 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1212 | { |
1213 | asection *plt; | |
1214 | bfd *dynobj; | |
1215 | ||
1216 | plt = hppa_info->plt_sec; | |
1217 | if (!plt) | |
1218 | { | |
1219 | dynobj = hppa_info->root.dynobj; | |
1220 | if (!dynobj) | |
1221 | hppa_info->root.dynobj = dynobj = abfd; | |
1222 | ||
3496cb2a L |
1223 | plt = bfd_make_section_with_flags (dynobj, ".plt", |
1224 | (SEC_ALLOC | |
1225 | | SEC_LOAD | |
1226 | | SEC_HAS_CONTENTS | |
1227 | | SEC_IN_MEMORY | |
1228 | | SEC_LINKER_CREATED)); | |
15bda425 | 1229 | if (!plt |
15bda425 JL |
1230 | || !bfd_set_section_alignment (abfd, plt, 3)) |
1231 | { | |
1232 | BFD_ASSERT (0); | |
b34976b6 | 1233 | return FALSE; |
15bda425 JL |
1234 | } |
1235 | ||
1236 | hppa_info->plt_sec = plt; | |
1237 | } | |
1238 | ||
b34976b6 | 1239 | return TRUE; |
15bda425 JL |
1240 | } |
1241 | ||
1242 | /* Create the DLT section. */ | |
1243 | ||
b34976b6 | 1244 | static bfd_boolean |
813c8a3c DA |
1245 | get_dlt (bfd *abfd, |
1246 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1247 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1248 | { |
1249 | asection *dlt; | |
1250 | bfd *dynobj; | |
1251 | ||
1252 | dlt = hppa_info->dlt_sec; | |
1253 | if (!dlt) | |
1254 | { | |
1255 | dynobj = hppa_info->root.dynobj; | |
1256 | if (!dynobj) | |
1257 | hppa_info->root.dynobj = dynobj = abfd; | |
1258 | ||
3496cb2a L |
1259 | dlt = bfd_make_section_with_flags (dynobj, ".dlt", |
1260 | (SEC_ALLOC | |
1261 | | SEC_LOAD | |
1262 | | SEC_HAS_CONTENTS | |
1263 | | SEC_IN_MEMORY | |
1264 | | SEC_LINKER_CREATED)); | |
15bda425 | 1265 | if (!dlt |
15bda425 JL |
1266 | || !bfd_set_section_alignment (abfd, dlt, 3)) |
1267 | { | |
1268 | BFD_ASSERT (0); | |
b34976b6 | 1269 | return FALSE; |
15bda425 JL |
1270 | } |
1271 | ||
1272 | hppa_info->dlt_sec = dlt; | |
1273 | } | |
1274 | ||
b34976b6 | 1275 | return TRUE; |
15bda425 JL |
1276 | } |
1277 | ||
1278 | /* Create the stubs section. */ | |
1279 | ||
b34976b6 | 1280 | static bfd_boolean |
813c8a3c DA |
1281 | get_stub (bfd *abfd, |
1282 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1283 | struct elf64_hppa_link_hash_table *hppa_info) | |
15bda425 JL |
1284 | { |
1285 | asection *stub; | |
1286 | bfd *dynobj; | |
1287 | ||
1288 | stub = hppa_info->stub_sec; | |
1289 | if (!stub) | |
1290 | { | |
1291 | dynobj = hppa_info->root.dynobj; | |
1292 | if (!dynobj) | |
1293 | hppa_info->root.dynobj = dynobj = abfd; | |
1294 | ||
3496cb2a L |
1295 | stub = bfd_make_section_with_flags (dynobj, ".stub", |
1296 | (SEC_ALLOC | SEC_LOAD | |
1297 | | SEC_HAS_CONTENTS | |
1298 | | SEC_IN_MEMORY | |
1299 | | SEC_READONLY | |
1300 | | SEC_LINKER_CREATED)); | |
15bda425 | 1301 | if (!stub |
15bda425 JL |
1302 | || !bfd_set_section_alignment (abfd, stub, 3)) |
1303 | { | |
1304 | BFD_ASSERT (0); | |
b34976b6 | 1305 | return FALSE; |
15bda425 JL |
1306 | } |
1307 | ||
1308 | hppa_info->stub_sec = stub; | |
1309 | } | |
1310 | ||
b34976b6 | 1311 | return TRUE; |
15bda425 JL |
1312 | } |
1313 | ||
1314 | /* Create sections necessary for dynamic linking. This is only a rough | |
1315 | cut and will likely change as we learn more about the somewhat | |
1316 | unusual dynamic linking scheme HP uses. | |
1317 | ||
1318 | .stub: | |
1319 | Contains code to implement cross-space calls. The first time one | |
1320 | of the stubs is used it will call into the dynamic linker, later | |
1321 | calls will go straight to the target. | |
1322 | ||
1323 | The only stub we support right now looks like | |
1324 | ||
1325 | ldd OFFSET(%dp),%r1 | |
1326 | bve %r0(%r1) | |
1327 | ldd OFFSET+8(%dp),%dp | |
1328 | ||
1329 | Other stubs may be needed in the future. We may want the remove | |
1330 | the break/nop instruction. It is only used right now to keep the | |
1331 | offset of a .plt entry and a .stub entry in sync. | |
1332 | ||
1333 | .dlt: | |
1334 | This is what most people call the .got. HP used a different name. | |
1335 | Losers. | |
1336 | ||
1337 | .rela.dlt: | |
1338 | Relocations for the DLT. | |
1339 | ||
1340 | .plt: | |
1341 | Function pointers as address,gp pairs. | |
1342 | ||
1343 | .rela.plt: | |
1344 | Should contain dynamic IPLT (and EPLT?) relocations. | |
1345 | ||
1346 | .opd: | |
fe8bc63d | 1347 | FPTRS |
15bda425 JL |
1348 | |
1349 | .rela.opd: | |
1350 | EPLT relocations for symbols exported from shared libraries. */ | |
1351 | ||
b34976b6 | 1352 | static bfd_boolean |
813c8a3c DA |
1353 | elf64_hppa_create_dynamic_sections (bfd *abfd, |
1354 | struct bfd_link_info *info) | |
15bda425 JL |
1355 | { |
1356 | asection *s; | |
4dfe6ac6 NC |
1357 | struct elf64_hppa_link_hash_table *hppa_info; |
1358 | ||
1359 | hppa_info = hppa_link_hash_table (info); | |
1360 | if (hppa_info == NULL) | |
1361 | return FALSE; | |
15bda425 | 1362 | |
4dfe6ac6 | 1363 | if (! get_stub (abfd, info, hppa_info)) |
b34976b6 | 1364 | return FALSE; |
15bda425 | 1365 | |
4dfe6ac6 | 1366 | if (! get_dlt (abfd, info, hppa_info)) |
b34976b6 | 1367 | return FALSE; |
15bda425 | 1368 | |
4dfe6ac6 | 1369 | if (! get_plt (abfd, info, hppa_info)) |
b34976b6 | 1370 | return FALSE; |
15bda425 | 1371 | |
4dfe6ac6 | 1372 | if (! get_opd (abfd, info, hppa_info)) |
b34976b6 | 1373 | return FALSE; |
15bda425 | 1374 | |
3496cb2a L |
1375 | s = bfd_make_section_with_flags (abfd, ".rela.dlt", |
1376 | (SEC_ALLOC | SEC_LOAD | |
1377 | | SEC_HAS_CONTENTS | |
1378 | | SEC_IN_MEMORY | |
1379 | | SEC_READONLY | |
1380 | | SEC_LINKER_CREATED)); | |
15bda425 | 1381 | if (s == NULL |
15bda425 | 1382 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1383 | return FALSE; |
4dfe6ac6 | 1384 | hppa_info->dlt_rel_sec = s; |
15bda425 | 1385 | |
3496cb2a L |
1386 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1387 | (SEC_ALLOC | SEC_LOAD | |
1388 | | SEC_HAS_CONTENTS | |
1389 | | SEC_IN_MEMORY | |
1390 | | SEC_READONLY | |
1391 | | SEC_LINKER_CREATED)); | |
15bda425 | 1392 | if (s == NULL |
15bda425 | 1393 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1394 | return FALSE; |
4dfe6ac6 | 1395 | hppa_info->plt_rel_sec = s; |
15bda425 | 1396 | |
3496cb2a L |
1397 | s = bfd_make_section_with_flags (abfd, ".rela.data", |
1398 | (SEC_ALLOC | SEC_LOAD | |
1399 | | SEC_HAS_CONTENTS | |
1400 | | SEC_IN_MEMORY | |
1401 | | SEC_READONLY | |
1402 | | SEC_LINKER_CREATED)); | |
15bda425 | 1403 | if (s == NULL |
15bda425 | 1404 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1405 | return FALSE; |
4dfe6ac6 | 1406 | hppa_info->other_rel_sec = s; |
15bda425 | 1407 | |
3496cb2a L |
1408 | s = bfd_make_section_with_flags (abfd, ".rela.opd", |
1409 | (SEC_ALLOC | SEC_LOAD | |
1410 | | SEC_HAS_CONTENTS | |
1411 | | SEC_IN_MEMORY | |
1412 | | SEC_READONLY | |
1413 | | SEC_LINKER_CREATED)); | |
15bda425 | 1414 | if (s == NULL |
15bda425 | 1415 | || !bfd_set_section_alignment (abfd, s, 3)) |
b34976b6 | 1416 | return FALSE; |
4dfe6ac6 | 1417 | hppa_info->opd_rel_sec = s; |
15bda425 | 1418 | |
b34976b6 | 1419 | return TRUE; |
15bda425 JL |
1420 | } |
1421 | ||
1422 | /* Allocate dynamic relocations for those symbols that turned out | |
1423 | to be dynamic. */ | |
1424 | ||
b34976b6 | 1425 | static bfd_boolean |
a03bd320 | 1426 | allocate_dynrel_entries (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 1427 | { |
a03bd320 | 1428 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1429 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
1430 | struct elf64_hppa_link_hash_table *hppa_info; | |
1431 | struct elf64_hppa_dyn_reloc_entry *rent; | |
b34976b6 | 1432 | bfd_boolean dynamic_symbol, shared; |
15bda425 | 1433 | |
a03bd320 | 1434 | hppa_info = hppa_link_hash_table (x->info); |
4dfe6ac6 NC |
1435 | if (hppa_info == NULL) |
1436 | return FALSE; | |
1437 | ||
a03bd320 | 1438 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, x->info); |
15bda425 JL |
1439 | shared = x->info->shared; |
1440 | ||
1441 | /* We may need to allocate relocations for a non-dynamic symbol | |
1442 | when creating a shared library. */ | |
1443 | if (!dynamic_symbol && !shared) | |
b34976b6 | 1444 | return TRUE; |
15bda425 JL |
1445 | |
1446 | /* Take care of the normal data relocations. */ | |
1447 | ||
a03bd320 | 1448 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
15bda425 | 1449 | { |
d663e1cd JL |
1450 | /* Allocate one iff we are building a shared library, the relocation |
1451 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
a03bd320 | 1452 | if (!shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
d663e1cd JL |
1453 | continue; |
1454 | ||
eea6121a | 1455 | hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1456 | |
1457 | /* Make sure this symbol gets into the dynamic symbol table if it is | |
1458 | not already recorded. ?!? This should not be in the loop since | |
1459 | the symbol need only be added once. */ | |
a03bd320 | 1460 | if (eh->dynindx == -1 && eh->type != STT_PARISC_MILLI) |
c152c796 | 1461 | if (!bfd_elf_link_record_local_dynamic_symbol |
a03bd320 | 1462 | (x->info, rent->sec->owner, hh->sym_indx)) |
b34976b6 | 1463 | return FALSE; |
15bda425 JL |
1464 | } |
1465 | ||
1466 | /* Take care of the GOT and PLT relocations. */ | |
1467 | ||
a03bd320 | 1468 | if ((dynamic_symbol || shared) && hh->want_dlt) |
eea6121a | 1469 | hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 JL |
1470 | |
1471 | /* If we are building a shared library, then every symbol that has an | |
1472 | opd entry will need an EPLT relocation to relocate the symbol's address | |
1473 | and __gp value based on the runtime load address. */ | |
a03bd320 | 1474 | if (shared && hh->want_opd) |
eea6121a | 1475 | hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela); |
15bda425 | 1476 | |
a03bd320 | 1477 | if (hh->want_plt && dynamic_symbol) |
15bda425 JL |
1478 | { |
1479 | bfd_size_type t = 0; | |
1480 | ||
1481 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
1482 | shared libraries get two REL relocations. Local symbols in | |
1483 | main applications get nothing. */ | |
1484 | if (dynamic_symbol) | |
1485 | t = sizeof (Elf64_External_Rela); | |
1486 | else if (shared) | |
1487 | t = 2 * sizeof (Elf64_External_Rela); | |
1488 | ||
eea6121a | 1489 | hppa_info->plt_rel_sec->size += t; |
15bda425 JL |
1490 | } |
1491 | ||
b34976b6 | 1492 | return TRUE; |
15bda425 JL |
1493 | } |
1494 | ||
1495 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1496 | regular object. */ | |
1497 | ||
b34976b6 | 1498 | static bfd_boolean |
813c8a3c | 1499 | elf64_hppa_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
a03bd320 | 1500 | struct elf_link_hash_entry *eh) |
15bda425 JL |
1501 | { |
1502 | /* ??? Undefined symbols with PLT entries should be re-defined | |
1503 | to be the PLT entry. */ | |
1504 | ||
1505 | /* If this is a weak symbol, and there is a real definition, the | |
1506 | processor independent code will have arranged for us to see the | |
1507 | real definition first, and we can just use the same value. */ | |
a03bd320 | 1508 | if (eh->u.weakdef != NULL) |
15bda425 | 1509 | { |
a03bd320 DA |
1510 | BFD_ASSERT (eh->u.weakdef->root.type == bfd_link_hash_defined |
1511 | || eh->u.weakdef->root.type == bfd_link_hash_defweak); | |
1512 | eh->root.u.def.section = eh->u.weakdef->root.u.def.section; | |
1513 | eh->root.u.def.value = eh->u.weakdef->root.u.def.value; | |
b34976b6 | 1514 | return TRUE; |
15bda425 JL |
1515 | } |
1516 | ||
1517 | /* If this is a reference to a symbol defined by a dynamic object which | |
1518 | is not a function, we might allocate the symbol in our .dynbss section | |
1519 | and allocate a COPY dynamic relocation. | |
1520 | ||
1521 | But PA64 code is canonically PIC, so as a rule we can avoid this sort | |
1522 | of hackery. */ | |
1523 | ||
b34976b6 | 1524 | return TRUE; |
15bda425 JL |
1525 | } |
1526 | ||
47b7c2db AM |
1527 | /* This function is called via elf_link_hash_traverse to mark millicode |
1528 | symbols with a dynindx of -1 and to remove the string table reference | |
1529 | from the dynamic symbol table. If the symbol is not a millicode symbol, | |
1530 | elf64_hppa_mark_exported_functions is called. */ | |
1531 | ||
b34976b6 | 1532 | static bfd_boolean |
a03bd320 | 1533 | elf64_hppa_mark_milli_and_exported_functions (struct elf_link_hash_entry *eh, |
813c8a3c | 1534 | void *data) |
47b7c2db | 1535 | { |
a03bd320 | 1536 | struct elf_link_hash_entry *elf = eh; |
47b7c2db | 1537 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
47b7c2db AM |
1538 | |
1539 | if (elf->root.type == bfd_link_hash_warning) | |
1540 | elf = (struct elf_link_hash_entry *) elf->root.u.i.link; | |
1541 | ||
1542 | if (elf->type == STT_PARISC_MILLI) | |
1543 | { | |
1544 | if (elf->dynindx != -1) | |
1545 | { | |
1546 | elf->dynindx = -1; | |
1547 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1548 | elf->dynstr_index); | |
1549 | } | |
b34976b6 | 1550 | return TRUE; |
47b7c2db AM |
1551 | } |
1552 | ||
a03bd320 | 1553 | return elf64_hppa_mark_exported_functions (eh, data); |
47b7c2db AM |
1554 | } |
1555 | ||
15bda425 JL |
1556 | /* Set the final sizes of the dynamic sections and allocate memory for |
1557 | the contents of our special sections. */ | |
1558 | ||
b34976b6 | 1559 | static bfd_boolean |
a03bd320 | 1560 | elf64_hppa_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
15bda425 | 1561 | { |
a03bd320 DA |
1562 | struct elf64_hppa_link_hash_table *hppa_info; |
1563 | struct elf64_hppa_allocate_data data; | |
15bda425 | 1564 | bfd *dynobj; |
a03bd320 DA |
1565 | bfd *ibfd; |
1566 | asection *sec; | |
b34976b6 AM |
1567 | bfd_boolean plt; |
1568 | bfd_boolean relocs; | |
1569 | bfd_boolean reltext; | |
15bda425 | 1570 | |
a03bd320 | 1571 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
1572 | if (hppa_info == NULL) |
1573 | return FALSE; | |
15bda425 JL |
1574 | |
1575 | dynobj = elf_hash_table (info)->dynobj; | |
1576 | BFD_ASSERT (dynobj != NULL); | |
1577 | ||
47b7c2db AM |
1578 | /* Mark each function this program exports so that we will allocate |
1579 | space in the .opd section for each function's FPTR. If we are | |
1580 | creating dynamic sections, change the dynamic index of millicode | |
1581 | symbols to -1 and remove them from the string table for .dynstr. | |
1582 | ||
1583 | We have to traverse the main linker hash table since we have to | |
1584 | find functions which may not have been mentioned in any relocs. */ | |
1585 | elf_link_hash_traverse (elf_hash_table (info), | |
1586 | (elf_hash_table (info)->dynamic_sections_created | |
1587 | ? elf64_hppa_mark_milli_and_exported_functions | |
1588 | : elf64_hppa_mark_exported_functions), | |
1589 | info); | |
1590 | ||
15bda425 JL |
1591 | if (elf_hash_table (info)->dynamic_sections_created) |
1592 | { | |
1593 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1594 | if (info->executable) |
15bda425 | 1595 | { |
a03bd320 DA |
1596 | sec = bfd_get_section_by_name (dynobj, ".interp"); |
1597 | BFD_ASSERT (sec != NULL); | |
1598 | sec->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1599 | sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
15bda425 JL |
1600 | } |
1601 | } | |
1602 | else | |
1603 | { | |
1604 | /* We may have created entries in the .rela.got section. | |
1605 | However, if we are not creating the dynamic sections, we will | |
1606 | not actually use these entries. Reset the size of .rela.dlt, | |
1607 | which will cause it to get stripped from the output file | |
1608 | below. */ | |
a03bd320 DA |
1609 | sec = bfd_get_section_by_name (dynobj, ".rela.dlt"); |
1610 | if (sec != NULL) | |
1611 | sec->size = 0; | |
1612 | } | |
1613 | ||
1614 | /* Set up DLT, PLT and OPD offsets for local syms, and space for local | |
1615 | dynamic relocs. */ | |
1616 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
1617 | { | |
1618 | bfd_signed_vma *local_dlt; | |
1619 | bfd_signed_vma *end_local_dlt; | |
1620 | bfd_signed_vma *local_plt; | |
1621 | bfd_signed_vma *end_local_plt; | |
1622 | bfd_signed_vma *local_opd; | |
1623 | bfd_signed_vma *end_local_opd; | |
1624 | bfd_size_type locsymcount; | |
1625 | Elf_Internal_Shdr *symtab_hdr; | |
1626 | asection *srel; | |
1627 | ||
1628 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
1629 | continue; | |
1630 | ||
1631 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1632 | { | |
1633 | struct elf64_hppa_dyn_reloc_entry *hdh_p; | |
1634 | ||
1635 | for (hdh_p = ((struct elf64_hppa_dyn_reloc_entry *) | |
1636 | elf_section_data (sec)->local_dynrel); | |
1637 | hdh_p != NULL; | |
1638 | hdh_p = hdh_p->next) | |
1639 | { | |
1640 | if (!bfd_is_abs_section (hdh_p->sec) | |
1641 | && bfd_is_abs_section (hdh_p->sec->output_section)) | |
1642 | { | |
1643 | /* Input section has been discarded, either because | |
1644 | it is a copy of a linkonce section or due to | |
1645 | linker script /DISCARD/, so we'll be discarding | |
1646 | the relocs too. */ | |
1647 | } | |
1648 | else if (hdh_p->count != 0) | |
1649 | { | |
1650 | srel = elf_section_data (hdh_p->sec)->sreloc; | |
1651 | srel->size += hdh_p->count * sizeof (Elf64_External_Rela); | |
1652 | if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0) | |
1653 | info->flags |= DF_TEXTREL; | |
1654 | } | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | local_dlt = elf_local_got_refcounts (ibfd); | |
1659 | if (!local_dlt) | |
1660 | continue; | |
1661 | ||
1662 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1663 | locsymcount = symtab_hdr->sh_info; | |
1664 | end_local_dlt = local_dlt + locsymcount; | |
1665 | sec = hppa_info->dlt_sec; | |
1666 | srel = hppa_info->dlt_rel_sec; | |
1667 | for (; local_dlt < end_local_dlt; ++local_dlt) | |
1668 | { | |
1669 | if (*local_dlt > 0) | |
1670 | { | |
1671 | *local_dlt = sec->size; | |
1672 | sec->size += DLT_ENTRY_SIZE; | |
1673 | if (info->shared) | |
1674 | { | |
1675 | srel->size += sizeof (Elf64_External_Rela); | |
1676 | } | |
1677 | } | |
1678 | else | |
1679 | *local_dlt = (bfd_vma) -1; | |
1680 | } | |
1681 | ||
1682 | local_plt = end_local_dlt; | |
1683 | end_local_plt = local_plt + locsymcount; | |
1684 | if (! hppa_info->root.dynamic_sections_created) | |
1685 | { | |
1686 | /* Won't be used, but be safe. */ | |
1687 | for (; local_plt < end_local_plt; ++local_plt) | |
1688 | *local_plt = (bfd_vma) -1; | |
1689 | } | |
1690 | else | |
1691 | { | |
1692 | sec = hppa_info->plt_sec; | |
1693 | srel = hppa_info->plt_rel_sec; | |
1694 | for (; local_plt < end_local_plt; ++local_plt) | |
1695 | { | |
1696 | if (*local_plt > 0) | |
1697 | { | |
1698 | *local_plt = sec->size; | |
1699 | sec->size += PLT_ENTRY_SIZE; | |
1700 | if (info->shared) | |
1701 | srel->size += sizeof (Elf64_External_Rela); | |
1702 | } | |
1703 | else | |
1704 | *local_plt = (bfd_vma) -1; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | local_opd = end_local_plt; | |
1709 | end_local_opd = local_opd + locsymcount; | |
1710 | if (! hppa_info->root.dynamic_sections_created) | |
1711 | { | |
1712 | /* Won't be used, but be safe. */ | |
1713 | for (; local_opd < end_local_opd; ++local_opd) | |
1714 | *local_opd = (bfd_vma) -1; | |
1715 | } | |
1716 | else | |
1717 | { | |
1718 | sec = hppa_info->opd_sec; | |
1719 | srel = hppa_info->opd_rel_sec; | |
1720 | for (; local_opd < end_local_opd; ++local_opd) | |
1721 | { | |
1722 | if (*local_opd > 0) | |
1723 | { | |
1724 | *local_opd = sec->size; | |
1725 | sec->size += OPD_ENTRY_SIZE; | |
1726 | if (info->shared) | |
1727 | srel->size += sizeof (Elf64_External_Rela); | |
1728 | } | |
1729 | else | |
1730 | *local_opd = (bfd_vma) -1; | |
1731 | } | |
1732 | } | |
15bda425 JL |
1733 | } |
1734 | ||
1735 | /* Allocate the GOT entries. */ | |
1736 | ||
1737 | data.info = info; | |
a03bd320 | 1738 | if (hppa_info->dlt_sec) |
15bda425 | 1739 | { |
a03bd320 DA |
1740 | data.ofs = hppa_info->dlt_sec->size; |
1741 | elf_link_hash_traverse (elf_hash_table (info), | |
1742 | allocate_global_data_dlt, &data); | |
eea6121a | 1743 | hppa_info->dlt_sec->size = data.ofs; |
a03bd320 | 1744 | } |
15bda425 | 1745 | |
a03bd320 DA |
1746 | if (hppa_info->plt_sec) |
1747 | { | |
1748 | data.ofs = hppa_info->plt_sec->size; | |
1749 | elf_link_hash_traverse (elf_hash_table (info), | |
1750 | allocate_global_data_plt, &data); | |
eea6121a | 1751 | hppa_info->plt_sec->size = data.ofs; |
a03bd320 | 1752 | } |
15bda425 | 1753 | |
a03bd320 DA |
1754 | if (hppa_info->stub_sec) |
1755 | { | |
15bda425 | 1756 | data.ofs = 0x0; |
a03bd320 DA |
1757 | elf_link_hash_traverse (elf_hash_table (info), |
1758 | allocate_global_data_stub, &data); | |
eea6121a | 1759 | hppa_info->stub_sec->size = data.ofs; |
15bda425 JL |
1760 | } |
1761 | ||
15bda425 | 1762 | /* Allocate space for entries in the .opd section. */ |
a03bd320 | 1763 | if (hppa_info->opd_sec) |
15bda425 | 1764 | { |
a03bd320 DA |
1765 | data.ofs = hppa_info->opd_sec->size; |
1766 | elf_link_hash_traverse (elf_hash_table (info), | |
1767 | allocate_global_data_opd, &data); | |
eea6121a | 1768 | hppa_info->opd_sec->size = data.ofs; |
15bda425 JL |
1769 | } |
1770 | ||
1771 | /* Now allocate space for dynamic relocations, if necessary. */ | |
1772 | if (hppa_info->root.dynamic_sections_created) | |
a03bd320 DA |
1773 | elf_link_hash_traverse (elf_hash_table (info), |
1774 | allocate_dynrel_entries, &data); | |
15bda425 JL |
1775 | |
1776 | /* The sizes of all the sections are set. Allocate memory for them. */ | |
b34976b6 AM |
1777 | plt = FALSE; |
1778 | relocs = FALSE; | |
1779 | reltext = FALSE; | |
a03bd320 | 1780 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
15bda425 JL |
1781 | { |
1782 | const char *name; | |
15bda425 | 1783 | |
a03bd320 | 1784 | if ((sec->flags & SEC_LINKER_CREATED) == 0) |
15bda425 JL |
1785 | continue; |
1786 | ||
1787 | /* It's OK to base decisions on the section name, because none | |
1788 | of the dynobj section names depend upon the input files. */ | |
a03bd320 | 1789 | name = bfd_get_section_name (dynobj, sec); |
15bda425 | 1790 | |
15bda425 JL |
1791 | if (strcmp (name, ".plt") == 0) |
1792 | { | |
c456f082 | 1793 | /* Remember whether there is a PLT. */ |
a03bd320 | 1794 | plt = sec->size != 0; |
15bda425 | 1795 | } |
c456f082 | 1796 | else if (strcmp (name, ".opd") == 0 |
0112cd26 | 1797 | || CONST_STRNEQ (name, ".dlt") |
c456f082 AM |
1798 | || strcmp (name, ".stub") == 0 |
1799 | || strcmp (name, ".got") == 0) | |
15bda425 | 1800 | { |
d663e1cd | 1801 | /* Strip this section if we don't need it; see the comment below. */ |
15bda425 | 1802 | } |
0112cd26 | 1803 | else if (CONST_STRNEQ (name, ".rela")) |
15bda425 | 1804 | { |
a03bd320 | 1805 | if (sec->size != 0) |
15bda425 JL |
1806 | { |
1807 | asection *target; | |
1808 | ||
1809 | /* Remember whether there are any reloc sections other | |
1810 | than .rela.plt. */ | |
1811 | if (strcmp (name, ".rela.plt") != 0) | |
1812 | { | |
1813 | const char *outname; | |
1814 | ||
b34976b6 | 1815 | relocs = TRUE; |
15bda425 JL |
1816 | |
1817 | /* If this relocation section applies to a read only | |
1818 | section, then we probably need a DT_TEXTREL | |
1819 | entry. The entries in the .rela.plt section | |
1820 | really apply to the .got section, which we | |
1821 | created ourselves and so know is not readonly. */ | |
1822 | outname = bfd_get_section_name (output_bfd, | |
a03bd320 | 1823 | sec->output_section); |
15bda425 JL |
1824 | target = bfd_get_section_by_name (output_bfd, outname + 4); |
1825 | if (target != NULL | |
1826 | && (target->flags & SEC_READONLY) != 0 | |
1827 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1828 | reltext = TRUE; |
15bda425 JL |
1829 | } |
1830 | ||
1831 | /* We use the reloc_count field as a counter if we need | |
1832 | to copy relocs into the output file. */ | |
a03bd320 | 1833 | sec->reloc_count = 0; |
15bda425 JL |
1834 | } |
1835 | } | |
c456f082 | 1836 | else |
15bda425 JL |
1837 | { |
1838 | /* It's not one of our sections, so don't allocate space. */ | |
1839 | continue; | |
1840 | } | |
1841 | ||
a03bd320 | 1842 | if (sec->size == 0) |
15bda425 | 1843 | { |
c456f082 AM |
1844 | /* If we don't need this section, strip it from the |
1845 | output file. This is mostly to handle .rela.bss and | |
1846 | .rela.plt. We must create both sections in | |
1847 | create_dynamic_sections, because they must be created | |
1848 | before the linker maps input sections to output | |
1849 | sections. The linker does that before | |
1850 | adjust_dynamic_symbol is called, and it is that | |
1851 | function which decides whether anything needs to go | |
1852 | into these sections. */ | |
a03bd320 | 1853 | sec->flags |= SEC_EXCLUDE; |
15bda425 JL |
1854 | continue; |
1855 | } | |
1856 | ||
a03bd320 | 1857 | if ((sec->flags & SEC_HAS_CONTENTS) == 0) |
c456f082 AM |
1858 | continue; |
1859 | ||
15bda425 | 1860 | /* Allocate memory for the section contents if it has not |
832d951b AM |
1861 | been allocated already. We use bfd_zalloc here in case |
1862 | unused entries are not reclaimed before the section's | |
1863 | contents are written out. This should not happen, but this | |
1864 | way if it does, we get a R_PARISC_NONE reloc instead of | |
1865 | garbage. */ | |
a03bd320 | 1866 | if (sec->contents == NULL) |
15bda425 | 1867 | { |
a03bd320 DA |
1868 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
1869 | if (sec->contents == NULL) | |
b34976b6 | 1870 | return FALSE; |
15bda425 JL |
1871 | } |
1872 | } | |
1873 | ||
1874 | if (elf_hash_table (info)->dynamic_sections_created) | |
1875 | { | |
1876 | /* Always create a DT_PLTGOT. It actually has nothing to do with | |
1877 | the PLT, it is how we communicate the __gp value of a load | |
1878 | module to the dynamic linker. */ | |
dc810e39 | 1879 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1880 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
1881 | |
1882 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) | |
1883 | || !add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 1884 | return FALSE; |
15bda425 JL |
1885 | |
1886 | /* Add some entries to the .dynamic section. We fill in the | |
1887 | values later, in elf64_hppa_finish_dynamic_sections, but we | |
1888 | must add the entries now so that we get the correct size for | |
1889 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1890 | dynamic linker and used by the debugger. */ | |
1891 | if (! info->shared) | |
1892 | { | |
dc810e39 AM |
1893 | if (!add_dynamic_entry (DT_DEBUG, 0) |
1894 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) | |
1895 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) | |
b34976b6 | 1896 | return FALSE; |
15bda425 JL |
1897 | } |
1898 | ||
f2482cb2 NC |
1899 | /* Force DT_FLAGS to always be set. |
1900 | Required by HPUX 11.00 patch PHSS_26559. */ | |
1901 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) | |
b34976b6 | 1902 | return FALSE; |
f2482cb2 | 1903 | |
15bda425 JL |
1904 | if (plt) |
1905 | { | |
dc810e39 AM |
1906 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
1907 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1908 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1909 | return FALSE; |
15bda425 JL |
1910 | } |
1911 | ||
1912 | if (relocs) | |
1913 | { | |
dc810e39 AM |
1914 | if (!add_dynamic_entry (DT_RELA, 0) |
1915 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1916 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1917 | return FALSE; |
15bda425 JL |
1918 | } |
1919 | ||
1920 | if (reltext) | |
1921 | { | |
dc810e39 | 1922 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1923 | return FALSE; |
d6cf2879 | 1924 | info->flags |= DF_TEXTREL; |
15bda425 JL |
1925 | } |
1926 | } | |
dc810e39 | 1927 | #undef add_dynamic_entry |
15bda425 | 1928 | |
b34976b6 | 1929 | return TRUE; |
15bda425 JL |
1930 | } |
1931 | ||
1932 | /* Called after we have output the symbol into the dynamic symbol | |
1933 | table, but before we output the symbol into the normal symbol | |
1934 | table. | |
1935 | ||
1936 | For some symbols we had to change their address when outputting | |
1937 | the dynamic symbol table. We undo that change here so that | |
1938 | the symbols have their expected value in the normal symbol | |
1939 | table. Ick. */ | |
1940 | ||
6e0b88f1 | 1941 | static int |
a03bd320 | 1942 | elf64_hppa_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
813c8a3c DA |
1943 | const char *name, |
1944 | Elf_Internal_Sym *sym, | |
1945 | asection *input_sec ATTRIBUTE_UNUSED, | |
a03bd320 | 1946 | struct elf_link_hash_entry *eh) |
15bda425 | 1947 | { |
a03bd320 | 1948 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1949 | |
1950 | /* We may be called with the file symbol or section symbols. | |
1951 | They never need munging, so it is safe to ignore them. */ | |
a03bd320 | 1952 | if (!name || !eh) |
6e0b88f1 | 1953 | return 1; |
15bda425 | 1954 | |
832d951b AM |
1955 | /* Function symbols for which we created .opd entries *may* have been |
1956 | munged by finish_dynamic_symbol and have to be un-munged here. | |
1957 | ||
1958 | Note that finish_dynamic_symbol sometimes turns dynamic symbols | |
1959 | into non-dynamic ones, so we initialize st_shndx to -1 in | |
1960 | mark_exported_functions and check to see if it was overwritten | |
a03bd320 DA |
1961 | here instead of just checking eh->dynindx. */ |
1962 | if (hh->want_opd && hh->st_shndx != -1) | |
15bda425 JL |
1963 | { |
1964 | /* Restore the saved value and section index. */ | |
a03bd320 DA |
1965 | sym->st_value = hh->st_value; |
1966 | sym->st_shndx = hh->st_shndx; | |
15bda425 JL |
1967 | } |
1968 | ||
6e0b88f1 | 1969 | return 1; |
15bda425 JL |
1970 | } |
1971 | ||
1972 | /* Finish up dynamic symbol handling. We set the contents of various | |
1973 | dynamic sections here. */ | |
1974 | ||
b34976b6 | 1975 | static bfd_boolean |
813c8a3c DA |
1976 | elf64_hppa_finish_dynamic_symbol (bfd *output_bfd, |
1977 | struct bfd_link_info *info, | |
a03bd320 | 1978 | struct elf_link_hash_entry *eh, |
813c8a3c | 1979 | Elf_Internal_Sym *sym) |
15bda425 | 1980 | { |
a03bd320 | 1981 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
1982 | asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel; |
1983 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 | 1984 | |
a03bd320 | 1985 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
1986 | if (hppa_info == NULL) |
1987 | return FALSE; | |
15bda425 JL |
1988 | |
1989 | stub = hppa_info->stub_sec; | |
1990 | splt = hppa_info->plt_sec; | |
1991 | sdlt = hppa_info->dlt_sec; | |
1992 | sopd = hppa_info->opd_sec; | |
1993 | spltrel = hppa_info->plt_rel_sec; | |
1994 | sdltrel = hppa_info->dlt_rel_sec; | |
1995 | ||
15bda425 JL |
1996 | /* Incredible. It is actually necessary to NOT use the symbol's real |
1997 | value when building the dynamic symbol table for a shared library. | |
1998 | At least for symbols that refer to functions. | |
1999 | ||
2000 | We will store a new value and section index into the symbol long | |
2001 | enough to output it into the dynamic symbol table, then we restore | |
2002 | the original values (in elf64_hppa_link_output_symbol_hook). */ | |
a03bd320 | 2003 | if (hh->want_opd) |
15bda425 | 2004 | { |
f12123c0 | 2005 | BFD_ASSERT (sopd != NULL); |
d663e1cd | 2006 | |
15bda425 JL |
2007 | /* Save away the original value and section index so that we |
2008 | can restore them later. */ | |
a03bd320 DA |
2009 | hh->st_value = sym->st_value; |
2010 | hh->st_shndx = sym->st_shndx; | |
15bda425 JL |
2011 | |
2012 | /* For the dynamic symbol table entry, we want the value to be | |
2013 | address of this symbol's entry within the .opd section. */ | |
a03bd320 | 2014 | sym->st_value = (hh->opd_offset |
15bda425 JL |
2015 | + sopd->output_offset |
2016 | + sopd->output_section->vma); | |
2017 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
2018 | sopd->output_section); | |
2019 | } | |
2020 | ||
2021 | /* Initialize a .plt entry if requested. */ | |
a03bd320 DA |
2022 | if (hh->want_plt |
2023 | && elf64_hppa_dynamic_symbol_p (eh, info)) | |
15bda425 JL |
2024 | { |
2025 | bfd_vma value; | |
2026 | Elf_Internal_Rela rel; | |
947216bf | 2027 | bfd_byte *loc; |
15bda425 | 2028 | |
f12123c0 | 2029 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
d663e1cd | 2030 | |
15bda425 JL |
2031 | /* We do not actually care about the value in the PLT entry |
2032 | if we are creating a shared library and the symbol is | |
2033 | still undefined, we create a dynamic relocation to fill | |
2034 | in the correct value. */ | |
a03bd320 | 2035 | if (info->shared && eh->root.type == bfd_link_hash_undefined) |
15bda425 JL |
2036 | value = 0; |
2037 | else | |
a03bd320 | 2038 | value = (eh->root.u.def.value + eh->root.u.def.section->vma); |
15bda425 | 2039 | |
fe8bc63d | 2040 | /* Fill in the entry in the procedure linkage table. |
15bda425 JL |
2041 | |
2042 | The format of a plt entry is | |
fe8bc63d | 2043 | <funcaddr> <__gp>. |
15bda425 JL |
2044 | |
2045 | plt_offset is the offset within the PLT section at which to | |
fe8bc63d | 2046 | install the PLT entry. |
15bda425 JL |
2047 | |
2048 | We are modifying the in-memory PLT contents here, so we do not add | |
2049 | in the output_offset of the PLT section. */ | |
2050 | ||
a03bd320 | 2051 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset); |
15bda425 | 2052 | value = _bfd_get_gp_value (splt->output_section->owner); |
a03bd320 | 2053 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset + 0x8); |
15bda425 JL |
2054 | |
2055 | /* Create a dynamic IPLT relocation for this entry. | |
2056 | ||
2057 | We are creating a relocation in the output file's PLT section, | |
2058 | which is included within the DLT secton. So we do need to include | |
2059 | the PLT's output_offset in the computation of the relocation's | |
2060 | address. */ | |
a03bd320 | 2061 | rel.r_offset = (hh->plt_offset + splt->output_offset |
15bda425 | 2062 | + splt->output_section->vma); |
a03bd320 | 2063 | rel.r_info = ELF64_R_INFO (hh->eh.dynindx, R_PARISC_IPLT); |
15bda425 JL |
2064 | rel.r_addend = 0; |
2065 | ||
947216bf AM |
2066 | loc = spltrel->contents; |
2067 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2068 | bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc); | |
15bda425 JL |
2069 | } |
2070 | ||
2071 | /* Initialize an external call stub entry if requested. */ | |
a03bd320 DA |
2072 | if (hh->want_stub |
2073 | && elf64_hppa_dynamic_symbol_p (eh, info)) | |
15bda425 JL |
2074 | { |
2075 | bfd_vma value; | |
2076 | int insn; | |
b352eebf | 2077 | unsigned int max_offset; |
15bda425 | 2078 | |
f12123c0 | 2079 | BFD_ASSERT (stub != NULL); |
d663e1cd | 2080 | |
15bda425 JL |
2081 | /* Install the generic stub template. |
2082 | ||
2083 | We are modifying the contents of the stub section, so we do not | |
2084 | need to include the stub section's output_offset here. */ | |
a03bd320 | 2085 | memcpy (stub->contents + hh->stub_offset, plt_stub, sizeof (plt_stub)); |
15bda425 JL |
2086 | |
2087 | /* Fix up the first ldd instruction. | |
2088 | ||
2089 | We are modifying the contents of the STUB section in memory, | |
fe8bc63d | 2090 | so we do not need to include its output offset in this computation. |
15bda425 JL |
2091 | |
2092 | Note the plt_offset value is the value of the PLT entry relative to | |
2093 | the start of the PLT section. These instructions will reference | |
2094 | data relative to the value of __gp, which may not necessarily have | |
2095 | the same address as the start of the PLT section. | |
2096 | ||
2097 | gp_offset contains the offset of __gp within the PLT section. */ | |
a03bd320 | 2098 | value = hh->plt_offset - hppa_info->gp_offset; |
fe8bc63d | 2099 | |
a03bd320 | 2100 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset); |
b352eebf AM |
2101 | if (output_bfd->arch_info->mach >= 25) |
2102 | { | |
2103 | /* Wide mode allows 16 bit offsets. */ | |
2104 | max_offset = 32768; | |
2105 | insn &= ~ 0xfff1; | |
dc810e39 | 2106 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2107 | } |
2108 | else | |
2109 | { | |
2110 | max_offset = 8192; | |
2111 | insn &= ~ 0x3ff1; | |
dc810e39 | 2112 | insn |= re_assemble_14 ((int) value); |
b352eebf AM |
2113 | } |
2114 | ||
2115 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) | |
2116 | { | |
2117 | (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"), | |
a03bd320 | 2118 | hh->eh.root.root.string, |
b352eebf | 2119 | (long) value); |
b34976b6 | 2120 | return FALSE; |
b352eebf AM |
2121 | } |
2122 | ||
dc810e39 | 2123 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
a03bd320 | 2124 | stub->contents + hh->stub_offset); |
15bda425 JL |
2125 | |
2126 | /* Fix up the second ldd instruction. */ | |
b352eebf | 2127 | value += 8; |
a03bd320 | 2128 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset + 8); |
b352eebf AM |
2129 | if (output_bfd->arch_info->mach >= 25) |
2130 | { | |
2131 | insn &= ~ 0xfff1; | |
dc810e39 | 2132 | insn |= re_assemble_16 ((int) value); |
b352eebf AM |
2133 | } |
2134 | else | |
2135 | { | |
2136 | insn &= ~ 0x3ff1; | |
dc810e39 | 2137 | insn |= re_assemble_14 ((int) value); |
b352eebf | 2138 | } |
dc810e39 | 2139 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
a03bd320 | 2140 | stub->contents + hh->stub_offset + 8); |
15bda425 JL |
2141 | } |
2142 | ||
b34976b6 | 2143 | return TRUE; |
15bda425 JL |
2144 | } |
2145 | ||
2146 | /* The .opd section contains FPTRs for each function this file | |
2147 | exports. Initialize the FPTR entries. */ | |
2148 | ||
b34976b6 | 2149 | static bfd_boolean |
a03bd320 | 2150 | elf64_hppa_finalize_opd (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 2151 | { |
a03bd320 | 2152 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2153 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2154 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 JL |
2155 | asection *sopd; |
2156 | asection *sopdrel; | |
2157 | ||
a03bd320 | 2158 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2159 | if (hppa_info == NULL) |
2160 | return FALSE; | |
2161 | ||
15bda425 JL |
2162 | sopd = hppa_info->opd_sec; |
2163 | sopdrel = hppa_info->opd_rel_sec; | |
2164 | ||
a03bd320 | 2165 | if (hh->want_opd) |
15bda425 JL |
2166 | { |
2167 | bfd_vma value; | |
2168 | ||
fe8bc63d | 2169 | /* The first two words of an .opd entry are zero. |
15bda425 JL |
2170 | |
2171 | We are modifying the contents of the OPD section in memory, so we | |
2172 | do not need to include its output offset in this computation. */ | |
a03bd320 | 2173 | memset (sopd->contents + hh->opd_offset, 0, 16); |
15bda425 | 2174 | |
a03bd320 DA |
2175 | value = (eh->root.u.def.value |
2176 | + eh->root.u.def.section->output_section->vma | |
2177 | + eh->root.u.def.section->output_offset); | |
15bda425 JL |
2178 | |
2179 | /* The next word is the address of the function. */ | |
a03bd320 | 2180 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 16); |
15bda425 JL |
2181 | |
2182 | /* The last word is our local __gp value. */ | |
2183 | value = _bfd_get_gp_value (sopd->output_section->owner); | |
a03bd320 | 2184 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 24); |
15bda425 JL |
2185 | } |
2186 | ||
2187 | /* If we are generating a shared library, we must generate EPLT relocations | |
2188 | for each entry in the .opd, even for static functions (they may have | |
2189 | had their address taken). */ | |
a03bd320 | 2190 | if (info->shared && hh->want_opd) |
15bda425 | 2191 | { |
947216bf AM |
2192 | Elf_Internal_Rela rel; |
2193 | bfd_byte *loc; | |
15bda425 JL |
2194 | int dynindx; |
2195 | ||
2196 | /* We may need to do a relocation against a local symbol, in | |
2197 | which case we have to look up it's dynamic symbol index off | |
2198 | the local symbol hash table. */ | |
a03bd320 DA |
2199 | if (eh->dynindx != -1) |
2200 | dynindx = eh->dynindx; | |
15bda425 JL |
2201 | else |
2202 | dynindx | |
a03bd320 DA |
2203 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2204 | hh->sym_indx); | |
15bda425 JL |
2205 | |
2206 | /* The offset of this relocation is the absolute address of the | |
2207 | .opd entry for this symbol. */ | |
a03bd320 | 2208 | rel.r_offset = (hh->opd_offset + sopd->output_offset |
15bda425 JL |
2209 | + sopd->output_section->vma); |
2210 | ||
2211 | /* If H is non-null, then we have an external symbol. | |
2212 | ||
2213 | It is imperative that we use a different dynamic symbol for the | |
2214 | EPLT relocation if the symbol has global scope. | |
2215 | ||
2216 | In the dynamic symbol table, the function symbol will have a value | |
2217 | which is address of the function's .opd entry. | |
2218 | ||
2219 | Thus, we can not use that dynamic symbol for the EPLT relocation | |
2220 | (if we did, the data in the .opd would reference itself rather | |
2221 | than the actual address of the function). Instead we have to use | |
2222 | a new dynamic symbol which has the same value as the original global | |
fe8bc63d | 2223 | function symbol. |
15bda425 JL |
2224 | |
2225 | We prefix the original symbol with a "." and use the new symbol in | |
2226 | the EPLT relocation. This new symbol has already been recorded in | |
2227 | the symbol table, we just have to look it up and use it. | |
2228 | ||
2229 | We do not have such problems with static functions because we do | |
2230 | not make their addresses in the dynamic symbol table point to | |
2231 | the .opd entry. Ultimately this should be safe since a static | |
2232 | function can not be directly referenced outside of its shared | |
2233 | library. | |
2234 | ||
2235 | We do have to play similar games for FPTR relocations in shared | |
2236 | libraries, including those for static symbols. See the FPTR | |
2237 | handling in elf64_hppa_finalize_dynreloc. */ | |
a03bd320 | 2238 | if (eh) |
15bda425 JL |
2239 | { |
2240 | char *new_name; | |
2241 | struct elf_link_hash_entry *nh; | |
2242 | ||
a03bd320 | 2243 | new_name = alloca (strlen (eh->root.root.string) + 2); |
15bda425 | 2244 | new_name[0] = '.'; |
a03bd320 | 2245 | strcpy (new_name + 1, eh->root.root.string); |
15bda425 JL |
2246 | |
2247 | nh = elf_link_hash_lookup (elf_hash_table (info), | |
adfef0bd NC |
2248 | new_name, TRUE, TRUE, FALSE); |
2249 | ||
15bda425 JL |
2250 | /* All we really want from the new symbol is its dynamic |
2251 | symbol index. */ | |
7fb9f789 NC |
2252 | if (nh) |
2253 | dynindx = nh->dynindx; | |
15bda425 JL |
2254 | } |
2255 | ||
2256 | rel.r_addend = 0; | |
2257 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); | |
2258 | ||
947216bf AM |
2259 | loc = sopdrel->contents; |
2260 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2261 | bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc); | |
15bda425 | 2262 | } |
b34976b6 | 2263 | return TRUE; |
15bda425 JL |
2264 | } |
2265 | ||
2266 | /* The .dlt section contains addresses for items referenced through the | |
2267 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus | |
2268 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ | |
2269 | ||
b34976b6 | 2270 | static bfd_boolean |
a03bd320 | 2271 | elf64_hppa_finalize_dlt (struct elf_link_hash_entry *eh, void *data) |
15bda425 | 2272 | { |
a03bd320 | 2273 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2274 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2275 | struct elf64_hppa_link_hash_table *hppa_info; | |
2276 | asection *sdlt, *sdltrel; | |
15bda425 | 2277 | |
a03bd320 | 2278 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2279 | if (hppa_info == NULL) |
2280 | return FALSE; | |
15bda425 JL |
2281 | |
2282 | sdlt = hppa_info->dlt_sec; | |
2283 | sdltrel = hppa_info->dlt_rel_sec; | |
2284 | ||
2285 | /* H/DYN_H may refer to a local variable and we know it's | |
2286 | address, so there is no need to create a relocation. Just install | |
2287 | the proper value into the DLT, note this shortcut can not be | |
2288 | skipped when building a shared library. */ | |
a03bd320 | 2289 | if (! info->shared && hh && hh->want_dlt) |
15bda425 JL |
2290 | { |
2291 | bfd_vma value; | |
2292 | ||
2293 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry | |
fe8bc63d | 2294 | to point to the FPTR entry in the .opd section. |
15bda425 JL |
2295 | |
2296 | We include the OPD's output offset in this computation as | |
2297 | we are referring to an absolute address in the resulting | |
2298 | object file. */ | |
a03bd320 | 2299 | if (hh->want_opd) |
15bda425 | 2300 | { |
a03bd320 | 2301 | value = (hh->opd_offset |
15bda425 JL |
2302 | + hppa_info->opd_sec->output_offset |
2303 | + hppa_info->opd_sec->output_section->vma); | |
2304 | } | |
a03bd320 DA |
2305 | else if ((eh->root.type == bfd_link_hash_defined |
2306 | || eh->root.type == bfd_link_hash_defweak) | |
2307 | && eh->root.u.def.section) | |
15bda425 | 2308 | { |
a03bd320 DA |
2309 | value = eh->root.u.def.value + eh->root.u.def.section->output_offset; |
2310 | if (eh->root.u.def.section->output_section) | |
2311 | value += eh->root.u.def.section->output_section->vma; | |
15bda425 | 2312 | else |
a03bd320 | 2313 | value += eh->root.u.def.section->vma; |
15bda425 | 2314 | } |
3db4b612 JL |
2315 | else |
2316 | /* We have an undefined function reference. */ | |
2317 | value = 0; | |
15bda425 JL |
2318 | |
2319 | /* We do not need to include the output offset of the DLT section | |
2320 | here because we are modifying the in-memory contents. */ | |
a03bd320 | 2321 | bfd_put_64 (sdlt->owner, value, sdlt->contents + hh->dlt_offset); |
15bda425 JL |
2322 | } |
2323 | ||
4cc11e76 | 2324 | /* Create a relocation for the DLT entry associated with this symbol. |
15bda425 | 2325 | When building a shared library the symbol does not have to be dynamic. */ |
a03bd320 DA |
2326 | if (hh->want_dlt |
2327 | && (elf64_hppa_dynamic_symbol_p (eh, info) || info->shared)) | |
15bda425 | 2328 | { |
947216bf AM |
2329 | Elf_Internal_Rela rel; |
2330 | bfd_byte *loc; | |
15bda425 JL |
2331 | int dynindx; |
2332 | ||
2333 | /* We may need to do a relocation against a local symbol, in | |
2334 | which case we have to look up it's dynamic symbol index off | |
2335 | the local symbol hash table. */ | |
a03bd320 DA |
2336 | if (eh && eh->dynindx != -1) |
2337 | dynindx = eh->dynindx; | |
15bda425 JL |
2338 | else |
2339 | dynindx | |
a03bd320 DA |
2340 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2341 | hh->sym_indx); | |
15bda425 | 2342 | |
15bda425 JL |
2343 | /* Create a dynamic relocation for this entry. Do include the output |
2344 | offset of the DLT entry since we need an absolute address in the | |
2345 | resulting object file. */ | |
a03bd320 | 2346 | rel.r_offset = (hh->dlt_offset + sdlt->output_offset |
15bda425 | 2347 | + sdlt->output_section->vma); |
a03bd320 | 2348 | if (eh && eh->type == STT_FUNC) |
15bda425 JL |
2349 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); |
2350 | else | |
2351 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); | |
2352 | rel.r_addend = 0; | |
2353 | ||
947216bf AM |
2354 | loc = sdltrel->contents; |
2355 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); | |
2356 | bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc); | |
15bda425 | 2357 | } |
b34976b6 | 2358 | return TRUE; |
15bda425 JL |
2359 | } |
2360 | ||
2361 | /* Finalize the dynamic relocations. Specifically the FPTR relocations | |
2362 | for dynamic functions used to initialize static data. */ | |
2363 | ||
b34976b6 | 2364 | static bfd_boolean |
a03bd320 | 2365 | elf64_hppa_finalize_dynreloc (struct elf_link_hash_entry *eh, |
813c8a3c | 2366 | void *data) |
15bda425 | 2367 | { |
a03bd320 | 2368 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
15bda425 JL |
2369 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
2370 | struct elf64_hppa_link_hash_table *hppa_info; | |
15bda425 JL |
2371 | int dynamic_symbol; |
2372 | ||
a03bd320 | 2373 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, info); |
15bda425 JL |
2374 | |
2375 | if (!dynamic_symbol && !info->shared) | |
b34976b6 | 2376 | return TRUE; |
15bda425 | 2377 | |
a03bd320 | 2378 | if (hh->reloc_entries) |
15bda425 JL |
2379 | { |
2380 | struct elf64_hppa_dyn_reloc_entry *rent; | |
2381 | int dynindx; | |
2382 | ||
a03bd320 | 2383 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2384 | if (hppa_info == NULL) |
2385 | return FALSE; | |
15bda425 JL |
2386 | |
2387 | /* We may need to do a relocation against a local symbol, in | |
2388 | which case we have to look up it's dynamic symbol index off | |
2389 | the local symbol hash table. */ | |
a03bd320 DA |
2390 | if (eh->dynindx != -1) |
2391 | dynindx = eh->dynindx; | |
15bda425 JL |
2392 | else |
2393 | dynindx | |
a03bd320 DA |
2394 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
2395 | hh->sym_indx); | |
15bda425 | 2396 | |
a03bd320 | 2397 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
15bda425 | 2398 | { |
947216bf AM |
2399 | Elf_Internal_Rela rel; |
2400 | bfd_byte *loc; | |
15bda425 | 2401 | |
d663e1cd JL |
2402 | /* Allocate one iff we are building a shared library, the relocation |
2403 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ | |
a03bd320 | 2404 | if (!info->shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
d663e1cd | 2405 | continue; |
15bda425 | 2406 | |
fe8bc63d | 2407 | /* Create a dynamic relocation for this entry. |
15bda425 JL |
2408 | |
2409 | We need the output offset for the reloc's section because | |
2410 | we are creating an absolute address in the resulting object | |
2411 | file. */ | |
2412 | rel.r_offset = (rent->offset + rent->sec->output_offset | |
2413 | + rent->sec->output_section->vma); | |
2414 | ||
2415 | /* An FPTR64 relocation implies that we took the address of | |
2416 | a function and that the function has an entry in the .opd | |
2417 | section. We want the FPTR64 relocation to reference the | |
2418 | entry in .opd. | |
2419 | ||
2420 | We could munge the symbol value in the dynamic symbol table | |
2421 | (in fact we already do for functions with global scope) to point | |
2422 | to the .opd entry. Then we could use that dynamic symbol in | |
2423 | this relocation. | |
2424 | ||
2425 | Or we could do something sensible, not munge the symbol's | |
2426 | address and instead just use a different symbol to reference | |
2427 | the .opd entry. At least that seems sensible until you | |
2428 | realize there's no local dynamic symbols we can use for that | |
2429 | purpose. Thus the hair in the check_relocs routine. | |
fe8bc63d | 2430 | |
15bda425 JL |
2431 | We use a section symbol recorded by check_relocs as the |
2432 | base symbol for the relocation. The addend is the difference | |
2433 | between the section symbol and the address of the .opd entry. */ | |
a03bd320 | 2434 | if (info->shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
15bda425 JL |
2435 | { |
2436 | bfd_vma value, value2; | |
15bda425 JL |
2437 | |
2438 | /* First compute the address of the opd entry for this symbol. */ | |
a03bd320 | 2439 | value = (hh->opd_offset |
15bda425 JL |
2440 | + hppa_info->opd_sec->output_section->vma |
2441 | + hppa_info->opd_sec->output_offset); | |
2442 | ||
2443 | /* Compute the value of the start of the section with | |
2444 | the relocation. */ | |
2445 | value2 = (rent->sec->output_section->vma | |
2446 | + rent->sec->output_offset); | |
2447 | ||
2448 | /* Compute the difference between the start of the section | |
2449 | with the relocation and the opd entry. */ | |
2450 | value -= value2; | |
fe8bc63d | 2451 | |
15bda425 JL |
2452 | /* The result becomes the addend of the relocation. */ |
2453 | rel.r_addend = value; | |
2454 | ||
2455 | /* The section symbol becomes the symbol for the dynamic | |
2456 | relocation. */ | |
2457 | dynindx | |
2458 | = _bfd_elf_link_lookup_local_dynindx (info, | |
2459 | rent->sec->owner, | |
2460 | rent->sec_symndx); | |
2461 | } | |
2462 | else | |
2463 | rel.r_addend = rent->addend; | |
2464 | ||
2465 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); | |
2466 | ||
947216bf AM |
2467 | loc = hppa_info->other_rel_sec->contents; |
2468 | loc += (hppa_info->other_rel_sec->reloc_count++ | |
2469 | * sizeof (Elf64_External_Rela)); | |
15bda425 | 2470 | bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner, |
947216bf | 2471 | &rel, loc); |
15bda425 JL |
2472 | } |
2473 | } | |
2474 | ||
b34976b6 | 2475 | return TRUE; |
15bda425 JL |
2476 | } |
2477 | ||
5ac81c74 JL |
2478 | /* Used to decide how to sort relocs in an optimal manner for the |
2479 | dynamic linker, before writing them out. */ | |
2480 | ||
2481 | static enum elf_reloc_type_class | |
813c8a3c | 2482 | elf64_hppa_reloc_type_class (const Elf_Internal_Rela *rela) |
5ac81c74 JL |
2483 | { |
2484 | if (ELF64_R_SYM (rela->r_info) == 0) | |
2485 | return reloc_class_relative; | |
2486 | ||
2487 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2488 | { | |
2489 | case R_PARISC_IPLT: | |
2490 | return reloc_class_plt; | |
2491 | case R_PARISC_COPY: | |
2492 | return reloc_class_copy; | |
2493 | default: | |
2494 | return reloc_class_normal; | |
2495 | } | |
2496 | } | |
2497 | ||
15bda425 JL |
2498 | /* Finish up the dynamic sections. */ |
2499 | ||
b34976b6 | 2500 | static bfd_boolean |
813c8a3c DA |
2501 | elf64_hppa_finish_dynamic_sections (bfd *output_bfd, |
2502 | struct bfd_link_info *info) | |
15bda425 JL |
2503 | { |
2504 | bfd *dynobj; | |
2505 | asection *sdyn; | |
2506 | struct elf64_hppa_link_hash_table *hppa_info; | |
2507 | ||
a03bd320 | 2508 | hppa_info = hppa_link_hash_table (info); |
4dfe6ac6 NC |
2509 | if (hppa_info == NULL) |
2510 | return FALSE; | |
15bda425 JL |
2511 | |
2512 | /* Finalize the contents of the .opd section. */ | |
a03bd320 DA |
2513 | elf_link_hash_traverse (elf_hash_table (info), |
2514 | elf64_hppa_finalize_opd, | |
2515 | info); | |
15bda425 | 2516 | |
a03bd320 DA |
2517 | elf_link_hash_traverse (elf_hash_table (info), |
2518 | elf64_hppa_finalize_dynreloc, | |
2519 | info); | |
15bda425 JL |
2520 | |
2521 | /* Finalize the contents of the .dlt section. */ | |
2522 | dynobj = elf_hash_table (info)->dynobj; | |
2523 | /* Finalize the contents of the .dlt section. */ | |
a03bd320 DA |
2524 | elf_link_hash_traverse (elf_hash_table (info), |
2525 | elf64_hppa_finalize_dlt, | |
2526 | info); | |
15bda425 | 2527 | |
15bda425 JL |
2528 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2529 | ||
2530 | if (elf_hash_table (info)->dynamic_sections_created) | |
2531 | { | |
2532 | Elf64_External_Dyn *dyncon, *dynconend; | |
15bda425 JL |
2533 | |
2534 | BFD_ASSERT (sdyn != NULL); | |
2535 | ||
2536 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 2537 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
15bda425 JL |
2538 | for (; dyncon < dynconend; dyncon++) |
2539 | { | |
2540 | Elf_Internal_Dyn dyn; | |
2541 | asection *s; | |
2542 | ||
2543 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2544 | ||
2545 | switch (dyn.d_tag) | |
2546 | { | |
2547 | default: | |
2548 | break; | |
2549 | ||
2550 | case DT_HP_LOAD_MAP: | |
2551 | /* Compute the absolute address of 16byte scratchpad area | |
2552 | for the dynamic linker. | |
2553 | ||
2554 | By convention the linker script will allocate the scratchpad | |
2555 | area at the start of the .data section. So all we have to | |
2556 | to is find the start of the .data section. */ | |
2557 | s = bfd_get_section_by_name (output_bfd, ".data"); | |
2558 | dyn.d_un.d_ptr = s->vma; | |
2559 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2560 | break; | |
2561 | ||
2562 | case DT_PLTGOT: | |
2563 | /* HP's use PLTGOT to set the GOT register. */ | |
2564 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); | |
2565 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2566 | break; | |
2567 | ||
2568 | case DT_JMPREL: | |
2569 | s = hppa_info->plt_rel_sec; | |
2570 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2571 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2572 | break; | |
2573 | ||
2574 | case DT_PLTRELSZ: | |
2575 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2576 | dyn.d_un.d_val = s->size; |
15bda425 JL |
2577 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2578 | break; | |
2579 | ||
2580 | case DT_RELA: | |
2581 | s = hppa_info->other_rel_sec; | |
eea6121a | 2582 | if (! s || ! s->size) |
15bda425 | 2583 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2584 | if (! s || ! s->size) |
5ac81c74 | 2585 | s = hppa_info->opd_rel_sec; |
15bda425 JL |
2586 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
2587 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2588 | break; | |
2589 | ||
2590 | case DT_RELASZ: | |
2591 | s = hppa_info->other_rel_sec; | |
eea6121a | 2592 | dyn.d_un.d_val = s->size; |
15bda425 | 2593 | s = hppa_info->dlt_rel_sec; |
eea6121a | 2594 | dyn.d_un.d_val += s->size; |
15bda425 | 2595 | s = hppa_info->opd_rel_sec; |
eea6121a | 2596 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2597 | /* There is some question about whether or not the size of |
2598 | the PLT relocs should be included here. HP's tools do | |
2599 | it, so we'll emulate them. */ | |
2600 | s = hppa_info->plt_rel_sec; | |
eea6121a | 2601 | dyn.d_un.d_val += s->size; |
15bda425 JL |
2602 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2603 | break; | |
2604 | ||
2605 | } | |
2606 | } | |
2607 | } | |
2608 | ||
b34976b6 | 2609 | return TRUE; |
15bda425 JL |
2610 | } |
2611 | ||
235ecfbc NC |
2612 | /* Support for core dump NOTE sections. */ |
2613 | ||
2614 | static bfd_boolean | |
2615 | elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2616 | { | |
2617 | int offset; | |
2618 | size_t size; | |
2619 | ||
2620 | switch (note->descsz) | |
2621 | { | |
2622 | default: | |
2623 | return FALSE; | |
2624 | ||
2625 | case 760: /* Linux/hppa */ | |
2626 | /* pr_cursig */ | |
2627 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2628 | ||
2629 | /* pr_pid */ | |
2630 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2631 | ||
2632 | /* pr_reg */ | |
2633 | offset = 112; | |
2634 | size = 640; | |
2635 | ||
2636 | break; | |
2637 | } | |
2638 | ||
2639 | /* Make a ".reg/999" section. */ | |
2640 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2641 | size, note->descpos + offset); | |
2642 | } | |
2643 | ||
2644 | static bfd_boolean | |
2645 | elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2646 | { | |
2647 | char * command; | |
2648 | int n; | |
2649 | ||
2650 | switch (note->descsz) | |
2651 | { | |
2652 | default: | |
2653 | return FALSE; | |
2654 | ||
2655 | case 136: /* Linux/hppa elf_prpsinfo. */ | |
2656 | elf_tdata (abfd)->core_program | |
2657 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2658 | elf_tdata (abfd)->core_command | |
2659 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2660 | } | |
2661 | ||
2662 | /* Note that for some reason, a spurious space is tacked | |
2663 | onto the end of the args in some (at least one anyway) | |
2664 | implementations, so strip it off if it exists. */ | |
2665 | command = elf_tdata (abfd)->core_command; | |
2666 | n = strlen (command); | |
2667 | ||
2668 | if (0 < n && command[n - 1] == ' ') | |
2669 | command[n - 1] = '\0'; | |
2670 | ||
2671 | return TRUE; | |
2672 | } | |
2673 | ||
15bda425 JL |
2674 | /* Return the number of additional phdrs we will need. |
2675 | ||
2676 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2677 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2678 | |
2679 | This routine indicates that the backend needs one additional program | |
2680 | header for that case. | |
2681 | ||
2682 | Note we do not have access to the link info structure here, so we have | |
2683 | to guess whether or not we are building a shared library based on the | |
2684 | existence of a .interp section. */ | |
2685 | ||
2686 | static int | |
a6b96beb | 2687 | elf64_hppa_additional_program_headers (bfd *abfd, |
813c8a3c | 2688 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
15bda425 JL |
2689 | { |
2690 | asection *s; | |
2691 | ||
2692 | /* If we are creating a shared library, then we have to create a | |
2693 | PT_PHDR segment. HP's dynamic linker chokes without it. */ | |
2694 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2695 | if (! s) | |
2696 | return 1; | |
2697 | return 0; | |
2698 | } | |
2699 | ||
2700 | /* Allocate and initialize any program headers required by this | |
2701 | specific backend. | |
2702 | ||
2703 | The generic ELF code only creates PT_PHDRs for executables. The HP | |
fe8bc63d | 2704 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
15bda425 JL |
2705 | |
2706 | This allocates the PT_PHDR and initializes it in a manner suitable | |
fe8bc63d | 2707 | for the HP linker. |
15bda425 JL |
2708 | |
2709 | Note we do not have access to the link info structure here, so we have | |
2710 | to guess whether or not we are building a shared library based on the | |
2711 | existence of a .interp section. */ | |
2712 | ||
b34976b6 | 2713 | static bfd_boolean |
8ded5a0f AM |
2714 | elf64_hppa_modify_segment_map (bfd *abfd, |
2715 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
15bda425 | 2716 | { |
edd21aca | 2717 | struct elf_segment_map *m; |
15bda425 JL |
2718 | asection *s; |
2719 | ||
2720 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2721 | if (! s) | |
2722 | { | |
2723 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2724 | if (m->p_type == PT_PHDR) | |
2725 | break; | |
2726 | if (m == NULL) | |
2727 | { | |
dc810e39 AM |
2728 | m = ((struct elf_segment_map *) |
2729 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
15bda425 | 2730 | if (m == NULL) |
b34976b6 | 2731 | return FALSE; |
15bda425 JL |
2732 | |
2733 | m->p_type = PT_PHDR; | |
2734 | m->p_flags = PF_R | PF_X; | |
2735 | m->p_flags_valid = 1; | |
2736 | m->p_paddr_valid = 1; | |
2737 | m->includes_phdrs = 1; | |
2738 | ||
2739 | m->next = elf_tdata (abfd)->segment_map; | |
2740 | elf_tdata (abfd)->segment_map = m; | |
2741 | } | |
2742 | } | |
2743 | ||
2744 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2745 | if (m->p_type == PT_LOAD) | |
2746 | { | |
0ba2a60e | 2747 | unsigned int i; |
15bda425 JL |
2748 | |
2749 | for (i = 0; i < m->count; i++) | |
2750 | { | |
2751 | /* The code "hint" is not really a hint. It is a requirement | |
2752 | for certain versions of the HP dynamic linker. Worse yet, | |
2753 | it must be set even if the shared library does not have | |
2754 | any code in its "text" segment (thus the check for .hash | |
2755 | to catch this situation). */ | |
2756 | if (m->sections[i]->flags & SEC_CODE | |
2757 | || (strcmp (m->sections[i]->name, ".hash") == 0)) | |
2758 | m->p_flags |= (PF_X | PF_HP_CODE); | |
2759 | } | |
2760 | } | |
2761 | ||
b34976b6 | 2762 | return TRUE; |
15bda425 JL |
2763 | } |
2764 | ||
3fab46d0 AM |
2765 | /* Called when writing out an object file to decide the type of a |
2766 | symbol. */ | |
2767 | static int | |
813c8a3c DA |
2768 | elf64_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, |
2769 | int type) | |
3fab46d0 AM |
2770 | { |
2771 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
2772 | return STT_PARISC_MILLI; | |
2773 | else | |
2774 | return type; | |
2775 | } | |
2776 | ||
d97a8924 | 2777 | /* Support HP specific sections for core files. */ |
91d6fa6a | 2778 | |
d97a8924 | 2779 | static bfd_boolean |
91d6fa6a | 2780 | elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int sec_index, |
d97a8924 DA |
2781 | const char *typename) |
2782 | { | |
927e625f MK |
2783 | if (hdr->p_type == PT_HP_CORE_KERNEL) |
2784 | { | |
2785 | asection *sect; | |
2786 | ||
91d6fa6a | 2787 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
927e625f MK |
2788 | return FALSE; |
2789 | ||
2790 | sect = bfd_make_section_anyway (abfd, ".kernel"); | |
2791 | if (sect == NULL) | |
2792 | return FALSE; | |
2793 | sect->size = hdr->p_filesz; | |
2794 | sect->filepos = hdr->p_offset; | |
2795 | sect->flags = SEC_HAS_CONTENTS | SEC_READONLY; | |
2796 | return TRUE; | |
2797 | } | |
2798 | ||
d97a8924 DA |
2799 | if (hdr->p_type == PT_HP_CORE_PROC) |
2800 | { | |
2801 | int sig; | |
2802 | ||
2803 | if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0) | |
2804 | return FALSE; | |
2805 | if (bfd_bread (&sig, 4, abfd) != 4) | |
2806 | return FALSE; | |
2807 | ||
2808 | elf_tdata (abfd)->core_signal = sig; | |
2809 | ||
91d6fa6a | 2810 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
d97a8924 | 2811 | return FALSE; |
927e625f MK |
2812 | |
2813 | /* GDB uses the ".reg" section to read register contents. */ | |
2814 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz, | |
2815 | hdr->p_offset); | |
d97a8924 DA |
2816 | } |
2817 | ||
2818 | if (hdr->p_type == PT_HP_CORE_LOADABLE | |
2819 | || hdr->p_type == PT_HP_CORE_STACK | |
2820 | || hdr->p_type == PT_HP_CORE_MMF) | |
2821 | hdr->p_type = PT_LOAD; | |
2822 | ||
91d6fa6a | 2823 | return _bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename); |
d97a8924 DA |
2824 | } |
2825 | ||
5887528b DA |
2826 | /* Hook called by the linker routine which adds symbols from an object |
2827 | file. HP's libraries define symbols with HP specific section | |
2828 | indices, which we have to handle. */ | |
2829 | ||
2830 | static bfd_boolean | |
2831 | elf_hppa_add_symbol_hook (bfd *abfd, | |
2832 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2833 | Elf_Internal_Sym *sym, | |
2834 | const char **namep ATTRIBUTE_UNUSED, | |
2835 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2836 | asection **secp, | |
2837 | bfd_vma *valp) | |
2838 | { | |
91d6fa6a | 2839 | unsigned int sec_index = sym->st_shndx; |
5887528b | 2840 | |
91d6fa6a | 2841 | switch (sec_index) |
5887528b DA |
2842 | { |
2843 | case SHN_PARISC_ANSI_COMMON: | |
2844 | *secp = bfd_make_section_old_way (abfd, ".PARISC.ansi.common"); | |
2845 | (*secp)->flags |= SEC_IS_COMMON; | |
2846 | *valp = sym->st_size; | |
2847 | break; | |
2848 | ||
2849 | case SHN_PARISC_HUGE_COMMON: | |
2850 | *secp = bfd_make_section_old_way (abfd, ".PARISC.huge.common"); | |
2851 | (*secp)->flags |= SEC_IS_COMMON; | |
2852 | *valp = sym->st_size; | |
2853 | break; | |
2854 | } | |
2855 | ||
2856 | return TRUE; | |
2857 | } | |
2858 | ||
2859 | static bfd_boolean | |
2860 | elf_hppa_unmark_useless_dynamic_symbols (struct elf_link_hash_entry *h, | |
2861 | void *data) | |
2862 | { | |
2863 | struct bfd_link_info *info = data; | |
2864 | ||
2865 | if (h->root.type == bfd_link_hash_warning) | |
2866 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2867 | ||
2868 | /* If we are not creating a shared library, and this symbol is | |
2869 | referenced by a shared library but is not defined anywhere, then | |
2870 | the generic code will warn that it is undefined. | |
2871 | ||
2872 | This behavior is undesirable on HPs since the standard shared | |
2873 | libraries contain references to undefined symbols. | |
2874 | ||
2875 | So we twiddle the flags associated with such symbols so that they | |
2876 | will not trigger the warning. ?!? FIXME. This is horribly fragile. | |
2877 | ||
2878 | Ultimately we should have better controls over the generic ELF BFD | |
2879 | linker code. */ | |
2880 | if (! info->relocatable | |
2881 | && info->unresolved_syms_in_shared_libs != RM_IGNORE | |
2882 | && h->root.type == bfd_link_hash_undefined | |
2883 | && h->ref_dynamic | |
2884 | && !h->ref_regular) | |
2885 | { | |
2886 | h->ref_dynamic = 0; | |
2887 | h->pointer_equality_needed = 1; | |
2888 | } | |
2889 | ||
2890 | return TRUE; | |
2891 | } | |
2892 | ||
2893 | static bfd_boolean | |
2894 | elf_hppa_remark_useless_dynamic_symbols (struct elf_link_hash_entry *h, | |
2895 | void *data) | |
2896 | { | |
2897 | struct bfd_link_info *info = data; | |
2898 | ||
2899 | if (h->root.type == bfd_link_hash_warning) | |
2900 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2901 | ||
2902 | /* If we are not creating a shared library, and this symbol is | |
2903 | referenced by a shared library but is not defined anywhere, then | |
2904 | the generic code will warn that it is undefined. | |
2905 | ||
2906 | This behavior is undesirable on HPs since the standard shared | |
2907 | libraries contain references to undefined symbols. | |
2908 | ||
2909 | So we twiddle the flags associated with such symbols so that they | |
2910 | will not trigger the warning. ?!? FIXME. This is horribly fragile. | |
2911 | ||
2912 | Ultimately we should have better controls over the generic ELF BFD | |
2913 | linker code. */ | |
2914 | if (! info->relocatable | |
2915 | && info->unresolved_syms_in_shared_libs != RM_IGNORE | |
2916 | && h->root.type == bfd_link_hash_undefined | |
2917 | && !h->ref_dynamic | |
2918 | && !h->ref_regular | |
2919 | && h->pointer_equality_needed) | |
2920 | { | |
2921 | h->ref_dynamic = 1; | |
2922 | h->pointer_equality_needed = 0; | |
2923 | } | |
2924 | ||
2925 | return TRUE; | |
2926 | } | |
2927 | ||
2928 | static bfd_boolean | |
2929 | elf_hppa_is_dynamic_loader_symbol (const char *name) | |
2930 | { | |
2931 | return (! strcmp (name, "__CPU_REVISION") | |
2932 | || ! strcmp (name, "__CPU_KEYBITS_1") | |
2933 | || ! strcmp (name, "__SYSTEM_ID_D") | |
2934 | || ! strcmp (name, "__FPU_MODEL") | |
2935 | || ! strcmp (name, "__FPU_REVISION") | |
2936 | || ! strcmp (name, "__ARGC") | |
2937 | || ! strcmp (name, "__ARGV") | |
2938 | || ! strcmp (name, "__ENVP") | |
2939 | || ! strcmp (name, "__TLS_SIZE_D") | |
2940 | || ! strcmp (name, "__LOAD_INFO") | |
2941 | || ! strcmp (name, "__systab")); | |
2942 | } | |
2943 | ||
2944 | /* Record the lowest address for the data and text segments. */ | |
2945 | static void | |
2946 | elf_hppa_record_segment_addrs (bfd *abfd, | |
2947 | asection *section, | |
2948 | void *data) | |
2949 | { | |
2950 | struct elf64_hppa_link_hash_table *hppa_info = data; | |
2951 | ||
2952 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2953 | { | |
2954 | bfd_vma value; | |
2955 | Elf_Internal_Phdr *p; | |
2956 | ||
2957 | p = _bfd_elf_find_segment_containing_section (abfd, section->output_section); | |
2958 | BFD_ASSERT (p != NULL); | |
2959 | value = p->p_vaddr; | |
2960 | ||
2961 | if (section->flags & SEC_READONLY) | |
2962 | { | |
2963 | if (value < hppa_info->text_segment_base) | |
2964 | hppa_info->text_segment_base = value; | |
2965 | } | |
2966 | else | |
2967 | { | |
2968 | if (value < hppa_info->data_segment_base) | |
2969 | hppa_info->data_segment_base = value; | |
2970 | } | |
2971 | } | |
2972 | } | |
2973 | ||
2974 | /* Called after we have seen all the input files/sections, but before | |
2975 | final symbol resolution and section placement has been determined. | |
2976 | ||
2977 | We use this hook to (possibly) provide a value for __gp, then we | |
2978 | fall back to the generic ELF final link routine. */ | |
2979 | ||
2980 | static bfd_boolean | |
2981 | elf_hppa_final_link (bfd *abfd, struct bfd_link_info *info) | |
2982 | { | |
2983 | bfd_boolean retval; | |
2984 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); | |
2985 | ||
4dfe6ac6 NC |
2986 | if (hppa_info == NULL) |
2987 | return FALSE; | |
2988 | ||
5887528b DA |
2989 | if (! info->relocatable) |
2990 | { | |
2991 | struct elf_link_hash_entry *gp; | |
2992 | bfd_vma gp_val; | |
2993 | ||
2994 | /* The linker script defines a value for __gp iff it was referenced | |
2995 | by one of the objects being linked. First try to find the symbol | |
2996 | in the hash table. If that fails, just compute the value __gp | |
2997 | should have had. */ | |
2998 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
2999 | FALSE, FALSE); | |
3000 | ||
3001 | if (gp) | |
3002 | { | |
3003 | ||
3004 | /* Adjust the value of __gp as we may want to slide it into the | |
3005 | .plt section so that the stubs can access PLT entries without | |
3006 | using an addil sequence. */ | |
3007 | gp->root.u.def.value += hppa_info->gp_offset; | |
3008 | ||
3009 | gp_val = (gp->root.u.def.section->output_section->vma | |
3010 | + gp->root.u.def.section->output_offset | |
3011 | + gp->root.u.def.value); | |
3012 | } | |
3013 | else | |
3014 | { | |
3015 | asection *sec; | |
3016 | ||
3017 | /* First look for a .plt section. If found, then __gp is the | |
3018 | address of the .plt + gp_offset. | |
3019 | ||
3020 | If no .plt is found, then look for .dlt, .opd and .data (in | |
3021 | that order) and set __gp to the base address of whichever | |
3022 | section is found first. */ | |
3023 | ||
3024 | sec = hppa_info->plt_sec; | |
3025 | if (sec && ! (sec->flags & SEC_EXCLUDE)) | |
3026 | gp_val = (sec->output_offset | |
3027 | + sec->output_section->vma | |
3028 | + hppa_info->gp_offset); | |
3029 | else | |
3030 | { | |
3031 | sec = hppa_info->dlt_sec; | |
3032 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
3033 | sec = hppa_info->opd_sec; | |
3034 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
3035 | sec = bfd_get_section_by_name (abfd, ".data"); | |
3036 | if (!sec || (sec->flags & SEC_EXCLUDE)) | |
3037 | gp_val = 0; | |
3038 | else | |
3039 | gp_val = sec->output_offset + sec->output_section->vma; | |
3040 | } | |
3041 | } | |
3042 | ||
3043 | /* Install whatever value we found/computed for __gp. */ | |
3044 | _bfd_set_gp_value (abfd, gp_val); | |
3045 | } | |
3046 | ||
3047 | /* We need to know the base of the text and data segments so that we | |
3048 | can perform SEGREL relocations. We will record the base addresses | |
3049 | when we encounter the first SEGREL relocation. */ | |
3050 | hppa_info->text_segment_base = (bfd_vma)-1; | |
3051 | hppa_info->data_segment_base = (bfd_vma)-1; | |
3052 | ||
3053 | /* HP's shared libraries have references to symbols that are not | |
3054 | defined anywhere. The generic ELF BFD linker code will complain | |
3055 | about such symbols. | |
3056 | ||
3057 | So we detect the losing case and arrange for the flags on the symbol | |
3058 | to indicate that it was never referenced. This keeps the generic | |
3059 | ELF BFD link code happy and appears to not create any secondary | |
3060 | problems. Ultimately we need a way to control the behavior of the | |
3061 | generic ELF BFD link code better. */ | |
3062 | elf_link_hash_traverse (elf_hash_table (info), | |
3063 | elf_hppa_unmark_useless_dynamic_symbols, | |
3064 | info); | |
3065 | ||
3066 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3067 | retval = bfd_elf_final_link (abfd, info); | |
3068 | ||
3069 | elf_link_hash_traverse (elf_hash_table (info), | |
3070 | elf_hppa_remark_useless_dynamic_symbols, | |
3071 | info); | |
3072 | ||
3073 | /* If we're producing a final executable, sort the contents of the | |
3074 | unwind section. */ | |
d9f40817 | 3075 | if (retval && !info->relocatable) |
5887528b DA |
3076 | retval = elf_hppa_sort_unwind (abfd); |
3077 | ||
3078 | return retval; | |
3079 | } | |
3080 | ||
3081 | /* Relocate the given INSN. VALUE should be the actual value we want | |
3082 | to insert into the instruction, ie by this point we should not be | |
3083 | concerned with computing an offset relative to the DLT, PC, etc. | |
3084 | Instead this routine is meant to handle the bit manipulations needed | |
3085 | to insert the relocation into the given instruction. */ | |
3086 | ||
3087 | static int | |
3088 | elf_hppa_relocate_insn (int insn, int sym_value, unsigned int r_type) | |
3089 | { | |
3090 | switch (r_type) | |
3091 | { | |
3092 | /* This is any 22 bit branch. In PA2.0 syntax it corresponds to | |
3093 | the "B" instruction. */ | |
3094 | case R_PARISC_PCREL22F: | |
3095 | case R_PARISC_PCREL22C: | |
3096 | return (insn & ~0x3ff1ffd) | re_assemble_22 (sym_value); | |
3097 | ||
3098 | /* This is any 12 bit branch. */ | |
3099 | case R_PARISC_PCREL12F: | |
3100 | return (insn & ~0x1ffd) | re_assemble_12 (sym_value); | |
3101 | ||
3102 | /* This is any 17 bit branch. In PA2.0 syntax it also corresponds | |
3103 | to the "B" instruction as well as BE. */ | |
3104 | case R_PARISC_PCREL17F: | |
3105 | case R_PARISC_DIR17F: | |
3106 | case R_PARISC_DIR17R: | |
3107 | case R_PARISC_PCREL17C: | |
3108 | case R_PARISC_PCREL17R: | |
3109 | return (insn & ~0x1f1ffd) | re_assemble_17 (sym_value); | |
3110 | ||
3111 | /* ADDIL or LDIL instructions. */ | |
3112 | case R_PARISC_DLTREL21L: | |
3113 | case R_PARISC_DLTIND21L: | |
3114 | case R_PARISC_LTOFF_FPTR21L: | |
3115 | case R_PARISC_PCREL21L: | |
3116 | case R_PARISC_LTOFF_TP21L: | |
3117 | case R_PARISC_DPREL21L: | |
3118 | case R_PARISC_PLTOFF21L: | |
3119 | case R_PARISC_DIR21L: | |
3120 | return (insn & ~0x1fffff) | re_assemble_21 (sym_value); | |
3121 | ||
3122 | /* LDO and integer loads/stores with 14 bit displacements. */ | |
3123 | case R_PARISC_DLTREL14R: | |
3124 | case R_PARISC_DLTREL14F: | |
3125 | case R_PARISC_DLTIND14R: | |
3126 | case R_PARISC_DLTIND14F: | |
3127 | case R_PARISC_LTOFF_FPTR14R: | |
3128 | case R_PARISC_PCREL14R: | |
3129 | case R_PARISC_PCREL14F: | |
3130 | case R_PARISC_LTOFF_TP14R: | |
3131 | case R_PARISC_LTOFF_TP14F: | |
3132 | case R_PARISC_DPREL14R: | |
3133 | case R_PARISC_DPREL14F: | |
3134 | case R_PARISC_PLTOFF14R: | |
3135 | case R_PARISC_PLTOFF14F: | |
3136 | case R_PARISC_DIR14R: | |
3137 | case R_PARISC_DIR14F: | |
3138 | return (insn & ~0x3fff) | low_sign_unext (sym_value, 14); | |
3139 | ||
3140 | /* PA2.0W LDO and integer loads/stores with 16 bit displacements. */ | |
3141 | case R_PARISC_LTOFF_FPTR16F: | |
3142 | case R_PARISC_PCREL16F: | |
3143 | case R_PARISC_LTOFF_TP16F: | |
3144 | case R_PARISC_GPREL16F: | |
3145 | case R_PARISC_PLTOFF16F: | |
3146 | case R_PARISC_DIR16F: | |
3147 | case R_PARISC_LTOFF16F: | |
3148 | return (insn & ~0xffff) | re_assemble_16 (sym_value); | |
3149 | ||
3150 | /* Doubleword loads and stores with a 14 bit displacement. */ | |
3151 | case R_PARISC_DLTREL14DR: | |
3152 | case R_PARISC_DLTIND14DR: | |
3153 | case R_PARISC_LTOFF_FPTR14DR: | |
3154 | case R_PARISC_LTOFF_FPTR16DF: | |
3155 | case R_PARISC_PCREL14DR: | |
3156 | case R_PARISC_PCREL16DF: | |
3157 | case R_PARISC_LTOFF_TP14DR: | |
3158 | case R_PARISC_LTOFF_TP16DF: | |
3159 | case R_PARISC_DPREL14DR: | |
3160 | case R_PARISC_GPREL16DF: | |
3161 | case R_PARISC_PLTOFF14DR: | |
3162 | case R_PARISC_PLTOFF16DF: | |
3163 | case R_PARISC_DIR14DR: | |
3164 | case R_PARISC_DIR16DF: | |
3165 | case R_PARISC_LTOFF16DF: | |
3166 | return (insn & ~0x3ff1) | (((sym_value & 0x2000) >> 13) | |
3167 | | ((sym_value & 0x1ff8) << 1)); | |
3168 | ||
3169 | /* Floating point single word load/store instructions. */ | |
3170 | case R_PARISC_DLTREL14WR: | |
3171 | case R_PARISC_DLTIND14WR: | |
3172 | case R_PARISC_LTOFF_FPTR14WR: | |
3173 | case R_PARISC_LTOFF_FPTR16WF: | |
3174 | case R_PARISC_PCREL14WR: | |
3175 | case R_PARISC_PCREL16WF: | |
3176 | case R_PARISC_LTOFF_TP14WR: | |
3177 | case R_PARISC_LTOFF_TP16WF: | |
3178 | case R_PARISC_DPREL14WR: | |
3179 | case R_PARISC_GPREL16WF: | |
3180 | case R_PARISC_PLTOFF14WR: | |
3181 | case R_PARISC_PLTOFF16WF: | |
3182 | case R_PARISC_DIR16WF: | |
3183 | case R_PARISC_DIR14WR: | |
3184 | case R_PARISC_LTOFF16WF: | |
3185 | return (insn & ~0x3ff9) | (((sym_value & 0x2000) >> 13) | |
3186 | | ((sym_value & 0x1ffc) << 1)); | |
3187 | ||
3188 | default: | |
3189 | return insn; | |
3190 | } | |
3191 | } | |
3192 | ||
3193 | /* Compute the value for a relocation (REL) during a final link stage, | |
3194 | then insert the value into the proper location in CONTENTS. | |
3195 | ||
3196 | VALUE is a tentative value for the relocation and may be overridden | |
3197 | and modified here based on the specific relocation to be performed. | |
3198 | ||
3199 | For example we do conversions for PC-relative branches in this routine | |
3200 | or redirection of calls to external routines to stubs. | |
3201 | ||
3202 | The work of actually applying the relocation is left to a helper | |
3203 | routine in an attempt to reduce the complexity and size of this | |
3204 | function. */ | |
3205 | ||
3206 | static bfd_reloc_status_type | |
3207 | elf_hppa_final_link_relocate (Elf_Internal_Rela *rel, | |
3208 | bfd *input_bfd, | |
3209 | bfd *output_bfd, | |
3210 | asection *input_section, | |
3211 | bfd_byte *contents, | |
3212 | bfd_vma value, | |
3213 | struct bfd_link_info *info, | |
3214 | asection *sym_sec, | |
3215 | struct elf_link_hash_entry *eh) | |
3216 | { | |
3217 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); | |
3218 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); | |
3219 | bfd_vma *local_offsets; | |
3220 | Elf_Internal_Shdr *symtab_hdr; | |
3221 | int insn; | |
3222 | bfd_vma max_branch_offset = 0; | |
3223 | bfd_vma offset = rel->r_offset; | |
3224 | bfd_signed_vma addend = rel->r_addend; | |
3225 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); | |
3226 | unsigned int r_symndx = ELF_R_SYM (rel->r_info); | |
3227 | unsigned int r_type = howto->type; | |
3228 | bfd_byte *hit_data = contents + offset; | |
3229 | ||
4dfe6ac6 NC |
3230 | if (hppa_info == NULL) |
3231 | return bfd_reloc_notsupported; | |
3232 | ||
5887528b DA |
3233 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3234 | local_offsets = elf_local_got_offsets (input_bfd); | |
3235 | insn = bfd_get_32 (input_bfd, hit_data); | |
3236 | ||
3237 | switch (r_type) | |
3238 | { | |
3239 | case R_PARISC_NONE: | |
3240 | break; | |
3241 | ||
3242 | /* Basic function call support. | |
3243 | ||
3244 | Note for a call to a function defined in another dynamic library | |
3245 | we want to redirect the call to a stub. */ | |
3246 | ||
3247 | /* PC relative relocs without an implicit offset. */ | |
3248 | case R_PARISC_PCREL21L: | |
3249 | case R_PARISC_PCREL14R: | |
3250 | case R_PARISC_PCREL14F: | |
3251 | case R_PARISC_PCREL14WR: | |
3252 | case R_PARISC_PCREL14DR: | |
3253 | case R_PARISC_PCREL16F: | |
3254 | case R_PARISC_PCREL16WF: | |
3255 | case R_PARISC_PCREL16DF: | |
3256 | { | |
3257 | /* If this is a call to a function defined in another dynamic | |
3258 | library, then redirect the call to the local stub for this | |
3259 | function. */ | |
3260 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3261 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3262 | + hppa_info->stub_sec->output_section->vma); | |
3263 | ||
3264 | /* Turn VALUE into a proper PC relative address. */ | |
3265 | value -= (offset + input_section->output_offset | |
3266 | + input_section->output_section->vma); | |
3267 | ||
3268 | /* Adjust for any field selectors. */ | |
3269 | if (r_type == R_PARISC_PCREL21L) | |
3270 | value = hppa_field_adjust (value, -8 + addend, e_lsel); | |
3271 | else if (r_type == R_PARISC_PCREL14F | |
3272 | || r_type == R_PARISC_PCREL16F | |
3273 | || r_type == R_PARISC_PCREL16WF | |
3274 | || r_type == R_PARISC_PCREL16DF) | |
3275 | value = hppa_field_adjust (value, -8 + addend, e_fsel); | |
3276 | else | |
3277 | value = hppa_field_adjust (value, -8 + addend, e_rsel); | |
3278 | ||
3279 | /* Apply the relocation to the given instruction. */ | |
3280 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3281 | break; | |
3282 | } | |
3283 | ||
3284 | case R_PARISC_PCREL12F: | |
3285 | case R_PARISC_PCREL22F: | |
3286 | case R_PARISC_PCREL17F: | |
3287 | case R_PARISC_PCREL22C: | |
3288 | case R_PARISC_PCREL17C: | |
3289 | case R_PARISC_PCREL17R: | |
3290 | { | |
3291 | /* If this is a call to a function defined in another dynamic | |
3292 | library, then redirect the call to the local stub for this | |
3293 | function. */ | |
3294 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3295 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3296 | + hppa_info->stub_sec->output_section->vma); | |
3297 | ||
3298 | /* Turn VALUE into a proper PC relative address. */ | |
3299 | value -= (offset + input_section->output_offset | |
3300 | + input_section->output_section->vma); | |
3301 | addend -= 8; | |
3302 | ||
3303 | if (r_type == (unsigned int) R_PARISC_PCREL22F) | |
3304 | max_branch_offset = (1 << (22-1)) << 2; | |
3305 | else if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3306 | max_branch_offset = (1 << (17-1)) << 2; | |
3307 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3308 | max_branch_offset = (1 << (12-1)) << 2; | |
3309 | ||
3310 | /* Make sure we can reach the branch target. */ | |
3311 | if (max_branch_offset != 0 | |
3312 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3313 | { | |
3314 | (*_bfd_error_handler) | |
3315 | (_("%B(%A+0x%lx): cannot reach %s"), | |
3316 | input_bfd, | |
3317 | input_section, | |
3318 | offset, | |
3319 | eh->root.root.string); | |
3320 | bfd_set_error (bfd_error_bad_value); | |
3321 | return bfd_reloc_notsupported; | |
3322 | } | |
3323 | ||
3324 | /* Adjust for any field selectors. */ | |
3325 | if (r_type == R_PARISC_PCREL17R) | |
3326 | value = hppa_field_adjust (value, addend, e_rsel); | |
3327 | else | |
3328 | value = hppa_field_adjust (value, addend, e_fsel); | |
3329 | ||
3330 | /* All branches are implicitly shifted by 2 places. */ | |
3331 | value >>= 2; | |
3332 | ||
3333 | /* Apply the relocation to the given instruction. */ | |
3334 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3335 | break; | |
3336 | } | |
3337 | ||
3338 | /* Indirect references to data through the DLT. */ | |
3339 | case R_PARISC_DLTIND14R: | |
3340 | case R_PARISC_DLTIND14F: | |
3341 | case R_PARISC_DLTIND14DR: | |
3342 | case R_PARISC_DLTIND14WR: | |
3343 | case R_PARISC_DLTIND21L: | |
3344 | case R_PARISC_LTOFF_FPTR14R: | |
3345 | case R_PARISC_LTOFF_FPTR14DR: | |
3346 | case R_PARISC_LTOFF_FPTR14WR: | |
3347 | case R_PARISC_LTOFF_FPTR21L: | |
3348 | case R_PARISC_LTOFF_FPTR16F: | |
3349 | case R_PARISC_LTOFF_FPTR16WF: | |
3350 | case R_PARISC_LTOFF_FPTR16DF: | |
3351 | case R_PARISC_LTOFF_TP21L: | |
3352 | case R_PARISC_LTOFF_TP14R: | |
3353 | case R_PARISC_LTOFF_TP14F: | |
3354 | case R_PARISC_LTOFF_TP14WR: | |
3355 | case R_PARISC_LTOFF_TP14DR: | |
3356 | case R_PARISC_LTOFF_TP16F: | |
3357 | case R_PARISC_LTOFF_TP16WF: | |
3358 | case R_PARISC_LTOFF_TP16DF: | |
3359 | case R_PARISC_LTOFF16F: | |
3360 | case R_PARISC_LTOFF16WF: | |
3361 | case R_PARISC_LTOFF16DF: | |
3362 | { | |
3363 | bfd_vma off; | |
3364 | ||
3365 | /* If this relocation was against a local symbol, then we still | |
3366 | have not set up the DLT entry (it's not convenient to do so | |
3367 | in the "finalize_dlt" routine because it is difficult to get | |
3368 | to the local symbol's value). | |
3369 | ||
3370 | So, if this is a local symbol (h == NULL), then we need to | |
3371 | fill in its DLT entry. | |
3372 | ||
3373 | Similarly we may still need to set up an entry in .opd for | |
3374 | a local function which had its address taken. */ | |
3375 | if (hh == NULL) | |
3376 | { | |
3377 | bfd_vma *local_opd_offsets, *local_dlt_offsets; | |
3378 | ||
3379 | if (local_offsets == NULL) | |
3380 | abort (); | |
3381 | ||
3382 | /* Now do .opd creation if needed. */ | |
3383 | if (r_type == R_PARISC_LTOFF_FPTR14R | |
3384 | || r_type == R_PARISC_LTOFF_FPTR14DR | |
3385 | || r_type == R_PARISC_LTOFF_FPTR14WR | |
3386 | || r_type == R_PARISC_LTOFF_FPTR21L | |
3387 | || r_type == R_PARISC_LTOFF_FPTR16F | |
3388 | || r_type == R_PARISC_LTOFF_FPTR16WF | |
3389 | || r_type == R_PARISC_LTOFF_FPTR16DF) | |
3390 | { | |
3391 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; | |
3392 | off = local_opd_offsets[r_symndx]; | |
3393 | ||
3394 | /* The last bit records whether we've already initialised | |
3395 | this local .opd entry. */ | |
3396 | if ((off & 1) != 0) | |
3397 | { | |
3398 | BFD_ASSERT (off != (bfd_vma) -1); | |
3399 | off &= ~1; | |
3400 | } | |
3401 | else | |
3402 | { | |
3403 | local_opd_offsets[r_symndx] |= 1; | |
3404 | ||
3405 | /* The first two words of an .opd entry are zero. */ | |
3406 | memset (hppa_info->opd_sec->contents + off, 0, 16); | |
3407 | ||
3408 | /* The next word is the address of the function. */ | |
3409 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3410 | (hppa_info->opd_sec->contents + off + 16)); | |
3411 | ||
3412 | /* The last word is our local __gp value. */ | |
3413 | value = _bfd_get_gp_value | |
3414 | (hppa_info->opd_sec->output_section->owner); | |
3415 | bfd_put_64 (hppa_info->opd_sec->owner, value, | |
3416 | (hppa_info->opd_sec->contents + off + 24)); | |
3417 | } | |
3418 | ||
3419 | /* The DLT value is the address of the .opd entry. */ | |
3420 | value = (off | |
3421 | + hppa_info->opd_sec->output_offset | |
3422 | + hppa_info->opd_sec->output_section->vma); | |
3423 | addend = 0; | |
3424 | } | |
3425 | ||
3426 | local_dlt_offsets = local_offsets; | |
3427 | off = local_dlt_offsets[r_symndx]; | |
3428 | ||
3429 | if ((off & 1) != 0) | |
3430 | { | |
3431 | BFD_ASSERT (off != (bfd_vma) -1); | |
3432 | off &= ~1; | |
3433 | } | |
3434 | else | |
3435 | { | |
3436 | local_dlt_offsets[r_symndx] |= 1; | |
3437 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3438 | value + addend, | |
3439 | hppa_info->dlt_sec->contents + off); | |
3440 | } | |
3441 | } | |
3442 | else | |
3443 | off = hh->dlt_offset; | |
3444 | ||
3445 | /* We want the value of the DLT offset for this symbol, not | |
3446 | the symbol's actual address. Note that __gp may not point | |
3447 | to the start of the DLT, so we have to compute the absolute | |
3448 | address, then subtract out the value of __gp. */ | |
3449 | value = (off | |
3450 | + hppa_info->dlt_sec->output_offset | |
3451 | + hppa_info->dlt_sec->output_section->vma); | |
3452 | value -= _bfd_get_gp_value (output_bfd); | |
3453 | ||
3454 | /* All DLTIND relocations are basically the same at this point, | |
3455 | except that we need different field selectors for the 21bit | |
3456 | version vs the 14bit versions. */ | |
3457 | if (r_type == R_PARISC_DLTIND21L | |
3458 | || r_type == R_PARISC_LTOFF_FPTR21L | |
3459 | || r_type == R_PARISC_LTOFF_TP21L) | |
3460 | value = hppa_field_adjust (value, 0, e_lsel); | |
3461 | else if (r_type == R_PARISC_DLTIND14F | |
3462 | || r_type == R_PARISC_LTOFF_FPTR16F | |
3463 | || r_type == R_PARISC_LTOFF_FPTR16WF | |
3464 | || r_type == R_PARISC_LTOFF_FPTR16DF | |
3465 | || r_type == R_PARISC_LTOFF16F | |
3466 | || r_type == R_PARISC_LTOFF16DF | |
3467 | || r_type == R_PARISC_LTOFF16WF | |
3468 | || r_type == R_PARISC_LTOFF_TP16F | |
3469 | || r_type == R_PARISC_LTOFF_TP16WF | |
3470 | || r_type == R_PARISC_LTOFF_TP16DF) | |
3471 | value = hppa_field_adjust (value, 0, e_fsel); | |
3472 | else | |
3473 | value = hppa_field_adjust (value, 0, e_rsel); | |
3474 | ||
3475 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3476 | break; | |
3477 | } | |
3478 | ||
3479 | case R_PARISC_DLTREL14R: | |
3480 | case R_PARISC_DLTREL14F: | |
3481 | case R_PARISC_DLTREL14DR: | |
3482 | case R_PARISC_DLTREL14WR: | |
3483 | case R_PARISC_DLTREL21L: | |
3484 | case R_PARISC_DPREL21L: | |
3485 | case R_PARISC_DPREL14WR: | |
3486 | case R_PARISC_DPREL14DR: | |
3487 | case R_PARISC_DPREL14R: | |
3488 | case R_PARISC_DPREL14F: | |
3489 | case R_PARISC_GPREL16F: | |
3490 | case R_PARISC_GPREL16WF: | |
3491 | case R_PARISC_GPREL16DF: | |
3492 | { | |
3493 | /* Subtract out the global pointer value to make value a DLT | |
3494 | relative address. */ | |
3495 | value -= _bfd_get_gp_value (output_bfd); | |
3496 | ||
3497 | /* All DLTREL relocations are basically the same at this point, | |
3498 | except that we need different field selectors for the 21bit | |
3499 | version vs the 14bit versions. */ | |
3500 | if (r_type == R_PARISC_DLTREL21L | |
3501 | || r_type == R_PARISC_DPREL21L) | |
3502 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3503 | else if (r_type == R_PARISC_DLTREL14F | |
3504 | || r_type == R_PARISC_DPREL14F | |
3505 | || r_type == R_PARISC_GPREL16F | |
3506 | || r_type == R_PARISC_GPREL16WF | |
3507 | || r_type == R_PARISC_GPREL16DF) | |
3508 | value = hppa_field_adjust (value, addend, e_fsel); | |
3509 | else | |
3510 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3511 | ||
3512 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3513 | break; | |
3514 | } | |
3515 | ||
3516 | case R_PARISC_DIR21L: | |
3517 | case R_PARISC_DIR17R: | |
3518 | case R_PARISC_DIR17F: | |
3519 | case R_PARISC_DIR14R: | |
3520 | case R_PARISC_DIR14F: | |
3521 | case R_PARISC_DIR14WR: | |
3522 | case R_PARISC_DIR14DR: | |
3523 | case R_PARISC_DIR16F: | |
3524 | case R_PARISC_DIR16WF: | |
3525 | case R_PARISC_DIR16DF: | |
3526 | { | |
3527 | /* All DIR relocations are basically the same at this point, | |
3528 | except that branch offsets need to be divided by four, and | |
3529 | we need different field selectors. Note that we don't | |
3530 | redirect absolute calls to local stubs. */ | |
3531 | ||
3532 | if (r_type == R_PARISC_DIR21L) | |
3533 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3534 | else if (r_type == R_PARISC_DIR17F | |
3535 | || r_type == R_PARISC_DIR16F | |
3536 | || r_type == R_PARISC_DIR16WF | |
3537 | || r_type == R_PARISC_DIR16DF | |
3538 | || r_type == R_PARISC_DIR14F) | |
3539 | value = hppa_field_adjust (value, addend, e_fsel); | |
3540 | else | |
3541 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3542 | ||
3543 | if (r_type == R_PARISC_DIR17R || r_type == R_PARISC_DIR17F) | |
3544 | /* All branches are implicitly shifted by 2 places. */ | |
3545 | value >>= 2; | |
3546 | ||
3547 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3548 | break; | |
3549 | } | |
3550 | ||
3551 | case R_PARISC_PLTOFF21L: | |
3552 | case R_PARISC_PLTOFF14R: | |
3553 | case R_PARISC_PLTOFF14F: | |
3554 | case R_PARISC_PLTOFF14WR: | |
3555 | case R_PARISC_PLTOFF14DR: | |
3556 | case R_PARISC_PLTOFF16F: | |
3557 | case R_PARISC_PLTOFF16WF: | |
3558 | case R_PARISC_PLTOFF16DF: | |
3559 | { | |
3560 | /* We want the value of the PLT offset for this symbol, not | |
3561 | the symbol's actual address. Note that __gp may not point | |
3562 | to the start of the DLT, so we have to compute the absolute | |
3563 | address, then subtract out the value of __gp. */ | |
3564 | value = (hh->plt_offset | |
3565 | + hppa_info->plt_sec->output_offset | |
3566 | + hppa_info->plt_sec->output_section->vma); | |
3567 | value -= _bfd_get_gp_value (output_bfd); | |
3568 | ||
3569 | /* All PLTOFF relocations are basically the same at this point, | |
3570 | except that we need different field selectors for the 21bit | |
3571 | version vs the 14bit versions. */ | |
3572 | if (r_type == R_PARISC_PLTOFF21L) | |
3573 | value = hppa_field_adjust (value, addend, e_lrsel); | |
3574 | else if (r_type == R_PARISC_PLTOFF14F | |
3575 | || r_type == R_PARISC_PLTOFF16F | |
3576 | || r_type == R_PARISC_PLTOFF16WF | |
3577 | || r_type == R_PARISC_PLTOFF16DF) | |
3578 | value = hppa_field_adjust (value, addend, e_fsel); | |
3579 | else | |
3580 | value = hppa_field_adjust (value, addend, e_rrsel); | |
3581 | ||
3582 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); | |
3583 | break; | |
3584 | } | |
3585 | ||
3586 | case R_PARISC_LTOFF_FPTR32: | |
3587 | { | |
3588 | /* We may still need to create the FPTR itself if it was for | |
3589 | a local symbol. */ | |
3590 | if (hh == NULL) | |
3591 | { | |
3592 | /* The first two words of an .opd entry are zero. */ | |
3593 | memset (hppa_info->opd_sec->contents + hh->opd_offset, 0, 16); | |
3594 | ||
3595 | /* The next word is the address of the function. */ | |
3596 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3597 | (hppa_info->opd_sec->contents | |
3598 | + hh->opd_offset + 16)); | |
3599 | ||
3600 | /* The last word is our local __gp value. */ | |
3601 | value = _bfd_get_gp_value | |
3602 | (hppa_info->opd_sec->output_section->owner); | |
3603 | bfd_put_64 (hppa_info->opd_sec->owner, value, | |
3604 | hppa_info->opd_sec->contents + hh->opd_offset + 24); | |
3605 | ||
3606 | /* The DLT value is the address of the .opd entry. */ | |
3607 | value = (hh->opd_offset | |
3608 | + hppa_info->opd_sec->output_offset | |
3609 | + hppa_info->opd_sec->output_section->vma); | |
3610 | ||
3611 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3612 | value, | |
3613 | hppa_info->dlt_sec->contents + hh->dlt_offset); | |
3614 | } | |
3615 | ||
3616 | /* We want the value of the DLT offset for this symbol, not | |
3617 | the symbol's actual address. Note that __gp may not point | |
3618 | to the start of the DLT, so we have to compute the absolute | |
3619 | address, then subtract out the value of __gp. */ | |
3620 | value = (hh->dlt_offset | |
3621 | + hppa_info->dlt_sec->output_offset | |
3622 | + hppa_info->dlt_sec->output_section->vma); | |
3623 | value -= _bfd_get_gp_value (output_bfd); | |
3624 | bfd_put_32 (input_bfd, value, hit_data); | |
3625 | return bfd_reloc_ok; | |
3626 | } | |
3627 | ||
3628 | case R_PARISC_LTOFF_FPTR64: | |
3629 | case R_PARISC_LTOFF_TP64: | |
3630 | { | |
3631 | /* We may still need to create the FPTR itself if it was for | |
3632 | a local symbol. */ | |
3633 | if (eh == NULL && r_type == R_PARISC_LTOFF_FPTR64) | |
3634 | { | |
3635 | /* The first two words of an .opd entry are zero. */ | |
3636 | memset (hppa_info->opd_sec->contents + hh->opd_offset, 0, 16); | |
3637 | ||
3638 | /* The next word is the address of the function. */ | |
3639 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3640 | (hppa_info->opd_sec->contents | |
3641 | + hh->opd_offset + 16)); | |
3642 | ||
3643 | /* The last word is our local __gp value. */ | |
3644 | value = _bfd_get_gp_value | |
3645 | (hppa_info->opd_sec->output_section->owner); | |
3646 | bfd_put_64 (hppa_info->opd_sec->owner, value, | |
3647 | hppa_info->opd_sec->contents + hh->opd_offset + 24); | |
3648 | ||
3649 | /* The DLT value is the address of the .opd entry. */ | |
3650 | value = (hh->opd_offset | |
3651 | + hppa_info->opd_sec->output_offset | |
3652 | + hppa_info->opd_sec->output_section->vma); | |
3653 | ||
3654 | bfd_put_64 (hppa_info->dlt_sec->owner, | |
3655 | value, | |
3656 | hppa_info->dlt_sec->contents + hh->dlt_offset); | |
3657 | } | |
3658 | ||
3659 | /* We want the value of the DLT offset for this symbol, not | |
3660 | the symbol's actual address. Note that __gp may not point | |
3661 | to the start of the DLT, so we have to compute the absolute | |
3662 | address, then subtract out the value of __gp. */ | |
3663 | value = (hh->dlt_offset | |
3664 | + hppa_info->dlt_sec->output_offset | |
3665 | + hppa_info->dlt_sec->output_section->vma); | |
3666 | value -= _bfd_get_gp_value (output_bfd); | |
3667 | bfd_put_64 (input_bfd, value, hit_data); | |
3668 | return bfd_reloc_ok; | |
3669 | } | |
3670 | ||
3671 | case R_PARISC_DIR32: | |
3672 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
3673 | return bfd_reloc_ok; | |
3674 | ||
3675 | case R_PARISC_DIR64: | |
3676 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3677 | return bfd_reloc_ok; | |
3678 | ||
3679 | case R_PARISC_GPREL64: | |
3680 | /* Subtract out the global pointer value to make value a DLT | |
3681 | relative address. */ | |
3682 | value -= _bfd_get_gp_value (output_bfd); | |
3683 | ||
3684 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3685 | return bfd_reloc_ok; | |
3686 | ||
3687 | case R_PARISC_LTOFF64: | |
3688 | /* We want the value of the DLT offset for this symbol, not | |
3689 | the symbol's actual address. Note that __gp may not point | |
3690 | to the start of the DLT, so we have to compute the absolute | |
3691 | address, then subtract out the value of __gp. */ | |
3692 | value = (hh->dlt_offset | |
3693 | + hppa_info->dlt_sec->output_offset | |
3694 | + hppa_info->dlt_sec->output_section->vma); | |
3695 | value -= _bfd_get_gp_value (output_bfd); | |
3696 | ||
3697 | bfd_put_64 (input_bfd, value + addend, hit_data); | |
3698 | return bfd_reloc_ok; | |
3699 | ||
3700 | case R_PARISC_PCREL32: | |
3701 | { | |
3702 | /* If this is a call to a function defined in another dynamic | |
3703 | library, then redirect the call to the local stub for this | |
3704 | function. */ | |
3705 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3706 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3707 | + hppa_info->stub_sec->output_section->vma); | |
3708 | ||
3709 | /* Turn VALUE into a proper PC relative address. */ | |
3710 | value -= (offset + input_section->output_offset | |
3711 | + input_section->output_section->vma); | |
3712 | ||
3713 | value += addend; | |
3714 | value -= 8; | |
3715 | bfd_put_32 (input_bfd, value, hit_data); | |
3716 | return bfd_reloc_ok; | |
3717 | } | |
3718 | ||
3719 | case R_PARISC_PCREL64: | |
3720 | { | |
3721 | /* If this is a call to a function defined in another dynamic | |
3722 | library, then redirect the call to the local stub for this | |
3723 | function. */ | |
3724 | if (sym_sec == NULL || sym_sec->output_section == NULL) | |
3725 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset | |
3726 | + hppa_info->stub_sec->output_section->vma); | |
3727 | ||
3728 | /* Turn VALUE into a proper PC relative address. */ | |
3729 | value -= (offset + input_section->output_offset | |
3730 | + input_section->output_section->vma); | |
3731 | ||
3732 | value += addend; | |
3733 | value -= 8; | |
3734 | bfd_put_64 (input_bfd, value, hit_data); | |
3735 | return bfd_reloc_ok; | |
3736 | } | |
3737 | ||
3738 | case R_PARISC_FPTR64: | |
3739 | { | |
3740 | bfd_vma off; | |
3741 | ||
3742 | /* We may still need to create the FPTR itself if it was for | |
3743 | a local symbol. */ | |
3744 | if (hh == NULL) | |
3745 | { | |
3746 | bfd_vma *local_opd_offsets; | |
3747 | ||
3748 | if (local_offsets == NULL) | |
3749 | abort (); | |
3750 | ||
3751 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; | |
3752 | off = local_opd_offsets[r_symndx]; | |
3753 | ||
3754 | /* The last bit records whether we've already initialised | |
3755 | this local .opd entry. */ | |
3756 | if ((off & 1) != 0) | |
3757 | { | |
3758 | BFD_ASSERT (off != (bfd_vma) -1); | |
3759 | off &= ~1; | |
3760 | } | |
3761 | else | |
3762 | { | |
3763 | /* The first two words of an .opd entry are zero. */ | |
3764 | memset (hppa_info->opd_sec->contents + off, 0, 16); | |
3765 | ||
3766 | /* The next word is the address of the function. */ | |
3767 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, | |
3768 | (hppa_info->opd_sec->contents + off + 16)); | |
3769 | ||
3770 | /* The last word is our local __gp value. */ | |
3771 | value = _bfd_get_gp_value | |
3772 | (hppa_info->opd_sec->output_section->owner); | |
3773 | bfd_put_64 (hppa_info->opd_sec->owner, value, | |
3774 | hppa_info->opd_sec->contents + off + 24); | |
3775 | } | |
3776 | } | |
3777 | else | |
3778 | off = hh->opd_offset; | |
3779 | ||
3780 | if (hh == NULL || hh->want_opd) | |
3781 | /* We want the value of the OPD offset for this symbol. */ | |
3782 | value = (off | |
3783 | + hppa_info->opd_sec->output_offset | |
3784 | + hppa_info->opd_sec->output_section->vma); | |
3785 | else | |
3786 | /* We want the address of the symbol. */ | |
3787 | value += addend; | |
3788 | ||
3789 | bfd_put_64 (input_bfd, value, hit_data); | |
3790 | return bfd_reloc_ok; | |
3791 | } | |
3792 | ||
3793 | case R_PARISC_SECREL32: | |
3794 | if (sym_sec) | |
3795 | value -= sym_sec->output_section->vma; | |
3796 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
3797 | return bfd_reloc_ok; | |
3798 | ||
3799 | case R_PARISC_SEGREL32: | |
3800 | case R_PARISC_SEGREL64: | |
3801 | { | |
3802 | /* If this is the first SEGREL relocation, then initialize | |
3803 | the segment base values. */ | |
3804 | if (hppa_info->text_segment_base == (bfd_vma) -1) | |
3805 | bfd_map_over_sections (output_bfd, elf_hppa_record_segment_addrs, | |
3806 | hppa_info); | |
3807 | ||
3808 | /* VALUE holds the absolute address. We want to include the | |
3809 | addend, then turn it into a segment relative address. | |
3810 | ||
3811 | The segment is derived from SYM_SEC. We assume that there are | |
3812 | only two segments of note in the resulting executable/shlib. | |
3813 | A readonly segment (.text) and a readwrite segment (.data). */ | |
3814 | value += addend; | |
3815 | ||
3816 | if (sym_sec->flags & SEC_CODE) | |
3817 | value -= hppa_info->text_segment_base; | |
3818 | else | |
3819 | value -= hppa_info->data_segment_base; | |
3820 | ||
3821 | if (r_type == R_PARISC_SEGREL32) | |
3822 | bfd_put_32 (input_bfd, value, hit_data); | |
3823 | else | |
3824 | bfd_put_64 (input_bfd, value, hit_data); | |
3825 | return bfd_reloc_ok; | |
3826 | } | |
3827 | ||
3828 | /* Something we don't know how to handle. */ | |
3829 | default: | |
3830 | return bfd_reloc_notsupported; | |
3831 | } | |
3832 | ||
3833 | /* Update the instruction word. */ | |
3834 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); | |
3835 | return bfd_reloc_ok; | |
3836 | } | |
3837 | ||
3838 | /* Relocate an HPPA ELF section. */ | |
3839 | ||
3840 | static bfd_boolean | |
3841 | elf64_hppa_relocate_section (bfd *output_bfd, | |
3842 | struct bfd_link_info *info, | |
3843 | bfd *input_bfd, | |
3844 | asection *input_section, | |
3845 | bfd_byte *contents, | |
3846 | Elf_Internal_Rela *relocs, | |
3847 | Elf_Internal_Sym *local_syms, | |
3848 | asection **local_sections) | |
3849 | { | |
3850 | Elf_Internal_Shdr *symtab_hdr; | |
3851 | Elf_Internal_Rela *rel; | |
3852 | Elf_Internal_Rela *relend; | |
3853 | struct elf64_hppa_link_hash_table *hppa_info; | |
3854 | ||
3855 | hppa_info = hppa_link_hash_table (info); | |
4dfe6ac6 NC |
3856 | if (hppa_info == NULL) |
3857 | return FALSE; | |
3858 | ||
5887528b DA |
3859 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3860 | ||
3861 | rel = relocs; | |
3862 | relend = relocs + input_section->reloc_count; | |
3863 | for (; rel < relend; rel++) | |
3864 | { | |
3865 | int r_type; | |
3866 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); | |
3867 | unsigned long r_symndx; | |
3868 | struct elf_link_hash_entry *eh; | |
3869 | Elf_Internal_Sym *sym; | |
3870 | asection *sym_sec; | |
3871 | bfd_vma relocation; | |
3872 | bfd_reloc_status_type r; | |
3873 | bfd_boolean warned_undef; | |
3874 | ||
3875 | r_type = ELF_R_TYPE (rel->r_info); | |
3876 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) | |
3877 | { | |
3878 | bfd_set_error (bfd_error_bad_value); | |
3879 | return FALSE; | |
3880 | } | |
3881 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3882 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3883 | continue; | |
3884 | ||
3885 | /* This is a final link. */ | |
3886 | r_symndx = ELF_R_SYM (rel->r_info); | |
3887 | eh = NULL; | |
3888 | sym = NULL; | |
3889 | sym_sec = NULL; | |
3890 | warned_undef = FALSE; | |
3891 | if (r_symndx < symtab_hdr->sh_info) | |
3892 | { | |
3893 | /* This is a local symbol, hh defaults to NULL. */ | |
3894 | sym = local_syms + r_symndx; | |
3895 | sym_sec = local_sections[r_symndx]; | |
3896 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rel); | |
3897 | } | |
3898 | else | |
3899 | { | |
3900 | /* This is not a local symbol. */ | |
3901 | bfd_boolean unresolved_reloc; | |
3902 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
3903 | ||
3904 | /* It seems this can happen with erroneous or unsupported | |
3905 | input (mixing a.out and elf in an archive, for example.) */ | |
3906 | if (sym_hashes == NULL) | |
3907 | return FALSE; | |
3908 | ||
3909 | eh = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3910 | ||
3911 | while (eh->root.type == bfd_link_hash_indirect | |
3912 | || eh->root.type == bfd_link_hash_warning) | |
3913 | eh = (struct elf_link_hash_entry *) eh->root.u.i.link; | |
3914 | ||
3915 | warned_undef = FALSE; | |
3916 | unresolved_reloc = FALSE; | |
3917 | relocation = 0; | |
3918 | if (eh->root.type == bfd_link_hash_defined | |
3919 | || eh->root.type == bfd_link_hash_defweak) | |
3920 | { | |
3921 | sym_sec = eh->root.u.def.section; | |
3922 | if (sym_sec == NULL | |
3923 | || sym_sec->output_section == NULL) | |
3924 | /* Set a flag that will be cleared later if we find a | |
3925 | relocation value for this symbol. output_section | |
3926 | is typically NULL for symbols satisfied by a shared | |
3927 | library. */ | |
3928 | unresolved_reloc = TRUE; | |
3929 | else | |
3930 | relocation = (eh->root.u.def.value | |
3931 | + sym_sec->output_section->vma | |
3932 | + sym_sec->output_offset); | |
3933 | } | |
3934 | else if (eh->root.type == bfd_link_hash_undefweak) | |
3935 | ; | |
3936 | else if (info->unresolved_syms_in_objects == RM_IGNORE | |
3937 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT) | |
3938 | ; | |
3939 | else if (!info->relocatable | |
3940 | && elf_hppa_is_dynamic_loader_symbol (eh->root.root.string)) | |
3941 | continue; | |
3942 | else if (!info->relocatable) | |
3943 | { | |
3944 | bfd_boolean err; | |
3945 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR | |
3946 | || ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT); | |
3947 | if (!info->callbacks->undefined_symbol (info, | |
3948 | eh->root.root.string, | |
3949 | input_bfd, | |
3950 | input_section, | |
3951 | rel->r_offset, err)) | |
3952 | return FALSE; | |
3953 | warned_undef = TRUE; | |
3954 | } | |
3955 | ||
3956 | if (!info->relocatable | |
3957 | && relocation == 0 | |
3958 | && eh->root.type != bfd_link_hash_defined | |
3959 | && eh->root.type != bfd_link_hash_defweak | |
3960 | && eh->root.type != bfd_link_hash_undefweak) | |
3961 | { | |
3962 | if (info->unresolved_syms_in_objects == RM_IGNORE | |
3963 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT | |
3964 | && eh->type == STT_PARISC_MILLI) | |
3965 | { | |
3966 | if (! info->callbacks->undefined_symbol | |
3967 | (info, eh_name (eh), input_bfd, | |
3968 | input_section, rel->r_offset, FALSE)) | |
3969 | return FALSE; | |
3970 | warned_undef = TRUE; | |
3971 | } | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | if (sym_sec != NULL && elf_discarded_section (sym_sec)) | |
3976 | { | |
3977 | /* For relocs against symbols from removed linkonce sections, | |
3978 | or sections discarded by a linker script, we just want the | |
3979 | section contents zeroed. Avoid any special processing. */ | |
3980 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
3981 | rel->r_info = 0; | |
3982 | rel->r_addend = 0; | |
3983 | continue; | |
3984 | } | |
3985 | ||
3986 | if (info->relocatable) | |
3987 | continue; | |
3988 | ||
3989 | r = elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, | |
3990 | input_section, contents, | |
3991 | relocation, info, sym_sec, | |
3992 | eh); | |
3993 | ||
3994 | if (r != bfd_reloc_ok) | |
3995 | { | |
3996 | switch (r) | |
3997 | { | |
3998 | default: | |
3999 | abort (); | |
4000 | case bfd_reloc_overflow: | |
4001 | { | |
4002 | const char *sym_name; | |
4003 | ||
4004 | if (eh != NULL) | |
4005 | sym_name = NULL; | |
4006 | else | |
4007 | { | |
4008 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
4009 | symtab_hdr->sh_link, | |
4010 | sym->st_name); | |
4011 | if (sym_name == NULL) | |
4012 | return FALSE; | |
4013 | if (*sym_name == '\0') | |
4014 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
4015 | } | |
4016 | ||
4017 | if (!((*info->callbacks->reloc_overflow) | |
4018 | (info, (eh ? &eh->root : NULL), sym_name, | |
4019 | howto->name, (bfd_vma) 0, input_bfd, | |
4020 | input_section, rel->r_offset))) | |
4021 | return FALSE; | |
4022 | } | |
4023 | break; | |
4024 | } | |
4025 | } | |
4026 | } | |
4027 | return TRUE; | |
4028 | } | |
4029 | ||
b35d266b | 4030 | static const struct bfd_elf_special_section elf64_hppa_special_sections[] = |
2f89ff8d | 4031 | { |
0112cd26 NC |
4032 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
4033 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
4034 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
4035 | { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
4036 | { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
4037 | { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, | |
4038 | { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS }, | |
4039 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
4040 | }; |
4041 | ||
15bda425 JL |
4042 | /* The hash bucket size is the standard one, namely 4. */ |
4043 | ||
4044 | const struct elf_size_info hppa64_elf_size_info = | |
4045 | { | |
4046 | sizeof (Elf64_External_Ehdr), | |
4047 | sizeof (Elf64_External_Phdr), | |
4048 | sizeof (Elf64_External_Shdr), | |
4049 | sizeof (Elf64_External_Rel), | |
4050 | sizeof (Elf64_External_Rela), | |
4051 | sizeof (Elf64_External_Sym), | |
4052 | sizeof (Elf64_External_Dyn), | |
4053 | sizeof (Elf_External_Note), | |
4054 | 4, | |
4055 | 1, | |
45d6a902 | 4056 | 64, 3, |
15bda425 JL |
4057 | ELFCLASS64, EV_CURRENT, |
4058 | bfd_elf64_write_out_phdrs, | |
4059 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 4060 | bfd_elf64_checksum_contents, |
15bda425 | 4061 | bfd_elf64_write_relocs, |
73ff0d56 | 4062 | bfd_elf64_swap_symbol_in, |
15bda425 JL |
4063 | bfd_elf64_swap_symbol_out, |
4064 | bfd_elf64_slurp_reloc_table, | |
4065 | bfd_elf64_slurp_symbol_table, | |
4066 | bfd_elf64_swap_dyn_in, | |
4067 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
4068 | bfd_elf64_swap_reloc_in, |
4069 | bfd_elf64_swap_reloc_out, | |
4070 | bfd_elf64_swap_reloca_in, | |
4071 | bfd_elf64_swap_reloca_out | |
15bda425 JL |
4072 | }; |
4073 | ||
4074 | #define TARGET_BIG_SYM bfd_elf64_hppa_vec | |
4075 | #define TARGET_BIG_NAME "elf64-hppa" | |
4076 | #define ELF_ARCH bfd_arch_hppa | |
4077 | #define ELF_MACHINE_CODE EM_PARISC | |
4078 | /* This is not strictly correct. The maximum page size for PA2.0 is | |
4079 | 64M. But everything still uses 4k. */ | |
4080 | #define ELF_MAXPAGESIZE 0x1000 | |
d1036acb L |
4081 | #define ELF_OSABI ELFOSABI_HPUX |
4082 | ||
15bda425 | 4083 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
157090f7 | 4084 | #define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup |
15bda425 JL |
4085 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name |
4086 | #define elf_info_to_howto elf_hppa_info_to_howto | |
4087 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
4088 | ||
4089 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr | |
4090 | #define elf_backend_object_p elf64_hppa_object_p | |
4091 | #define elf_backend_final_write_processing \ | |
4092 | elf_hppa_final_write_processing | |
99c79b2e | 4093 | #define elf_backend_fake_sections elf_hppa_fake_sections |
15bda425 JL |
4094 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
4095 | ||
f0fe0e16 | 4096 | #define elf_backend_relocate_section elf_hppa_relocate_section |
15bda425 JL |
4097 | |
4098 | #define bfd_elf64_bfd_final_link elf_hppa_final_link | |
4099 | ||
4100 | #define elf_backend_create_dynamic_sections \ | |
4101 | elf64_hppa_create_dynamic_sections | |
4102 | #define elf_backend_post_process_headers elf64_hppa_post_process_headers | |
4103 | ||
74541ad4 AM |
4104 | #define elf_backend_omit_section_dynsym \ |
4105 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
15bda425 JL |
4106 | #define elf_backend_adjust_dynamic_symbol \ |
4107 | elf64_hppa_adjust_dynamic_symbol | |
4108 | ||
4109 | #define elf_backend_size_dynamic_sections \ | |
4110 | elf64_hppa_size_dynamic_sections | |
4111 | ||
4112 | #define elf_backend_finish_dynamic_symbol \ | |
4113 | elf64_hppa_finish_dynamic_symbol | |
4114 | #define elf_backend_finish_dynamic_sections \ | |
4115 | elf64_hppa_finish_dynamic_sections | |
235ecfbc NC |
4116 | #define elf_backend_grok_prstatus elf64_hppa_grok_prstatus |
4117 | #define elf_backend_grok_psinfo elf64_hppa_grok_psinfo | |
4118 | ||
15bda425 JL |
4119 | /* Stuff for the BFD linker: */ |
4120 | #define bfd_elf64_bfd_link_hash_table_create \ | |
4121 | elf64_hppa_hash_table_create | |
4122 | ||
4123 | #define elf_backend_check_relocs \ | |
4124 | elf64_hppa_check_relocs | |
4125 | ||
4126 | #define elf_backend_size_info \ | |
4127 | hppa64_elf_size_info | |
4128 | ||
4129 | #define elf_backend_additional_program_headers \ | |
4130 | elf64_hppa_additional_program_headers | |
4131 | ||
4132 | #define elf_backend_modify_segment_map \ | |
4133 | elf64_hppa_modify_segment_map | |
4134 | ||
4135 | #define elf_backend_link_output_symbol_hook \ | |
4136 | elf64_hppa_link_output_symbol_hook | |
4137 | ||
15bda425 JL |
4138 | #define elf_backend_want_got_plt 0 |
4139 | #define elf_backend_plt_readonly 0 | |
4140 | #define elf_backend_want_plt_sym 0 | |
4141 | #define elf_backend_got_header_size 0 | |
b34976b6 AM |
4142 | #define elf_backend_type_change_ok TRUE |
4143 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type | |
4144 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class | |
4145 | #define elf_backend_rela_normal 1 | |
29ef7005 | 4146 | #define elf_backend_special_sections elf64_hppa_special_sections |
8a696751 | 4147 | #define elf_backend_action_discarded elf_hppa_action_discarded |
d97a8924 | 4148 | #define elf_backend_section_from_phdr elf64_hppa_section_from_phdr |
15bda425 | 4149 | |
83d1651b L |
4150 | #define elf64_bed elf64_hppa_hpux_bed |
4151 | ||
15bda425 | 4152 | #include "elf64-target.h" |
d952f17a AM |
4153 | |
4154 | #undef TARGET_BIG_SYM | |
4155 | #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec | |
4156 | #undef TARGET_BIG_NAME | |
4157 | #define TARGET_BIG_NAME "elf64-hppa-linux" | |
d1036acb L |
4158 | #undef ELF_OSABI |
4159 | #define ELF_OSABI ELFOSABI_LINUX | |
4160 | #undef elf_backend_post_process_headers | |
4161 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
83d1651b L |
4162 | #undef elf64_bed |
4163 | #define elf64_bed elf64_hppa_linux_bed | |
d952f17a | 4164 | |
d952f17a | 4165 | #include "elf64-target.h" |