Support the use of the STT_COMMON type. (In source and object files only at the...
[deliverable/binutils-gdb.git] / bfd / elf64-hppa.c
CommitLineData
b352eebf 1/* Support for HPPA 64-bit ELF
157090f7 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5a580b3a 3 Free Software Foundation, Inc.
15bda425 4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
15bda425 6
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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
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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
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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
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19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
15bda425 21
3ef20aaa 22#include "alloca-conf.h"
15bda425 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
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25#include "libbfd.h"
26#include "elf-bfd.h"
27#include "elf/hppa.h"
28#include "libhppa.h"
29#include "elf64-hppa.h"
30#define ARCH_SIZE 64
31
32#define PLT_ENTRY_SIZE 0x10
33#define DLT_ENTRY_SIZE 0x8
34#define OPD_ENTRY_SIZE 0x20
fe8bc63d 35
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36#define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl"
37
38/* The stub is supposed to load the target address and target's DP
39 value out of the PLT, then do an external branch to the target
40 address.
41
42 LDD PLTOFF(%r27),%r1
43 BVE (%r1)
44 LDD PLTOFF+8(%r27),%r27
45
46 Note that we must use the LDD with a 14 bit displacement, not the one
47 with a 5 bit displacement. */
48static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00,
49 0x53, 0x7b, 0x00, 0x00 };
50
51struct elf64_hppa_dyn_hash_entry
52{
53 struct bfd_hash_entry root;
54
55 /* Offsets for this symbol in various linker sections. */
56 bfd_vma dlt_offset;
57 bfd_vma plt_offset;
58 bfd_vma opd_offset;
59 bfd_vma stub_offset;
60
edd21aca 61 /* The symbol table entry, if any, that this was derived from. */
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62 struct elf_link_hash_entry *h;
63
64 /* The index of the (possibly local) symbol in the input bfd and its
65 associated BFD. Needed so that we can have relocs against local
66 symbols in shared libraries. */
dc810e39 67 long sym_indx;
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68 bfd *owner;
69
70 /* Dynamic symbols may need to have two different values. One for
71 the dynamic symbol table, one for the normal symbol table.
72
73 In such cases we store the symbol's real value and section
74 index here so we can restore the real value before we write
75 the normal symbol table. */
76 bfd_vma st_value;
77 int st_shndx;
78
79 /* Used to count non-got, non-plt relocations for delayed sizing
80 of relocation sections. */
81 struct elf64_hppa_dyn_reloc_entry
82 {
83 /* Next relocation in the chain. */
84 struct elf64_hppa_dyn_reloc_entry *next;
85
86 /* The type of the relocation. */
87 int type;
88
89 /* The input section of the relocation. */
90 asection *sec;
91
92 /* The index of the section symbol for the input section of
93 the relocation. Only needed when building shared libraries. */
94 int sec_symndx;
95
96 /* The offset within the input section of the relocation. */
97 bfd_vma offset;
98
99 /* The addend for the relocation. */
100 bfd_vma addend;
101
102 } *reloc_entries;
103
104 /* Nonzero if this symbol needs an entry in one of the linker
105 sections. */
106 unsigned want_dlt;
107 unsigned want_plt;
108 unsigned want_opd;
109 unsigned want_stub;
110};
111
112struct elf64_hppa_dyn_hash_table
113{
114 struct bfd_hash_table root;
115};
116
117struct elf64_hppa_link_hash_table
118{
119 struct elf_link_hash_table root;
120
121 /* Shortcuts to get to the various linker defined sections. */
122 asection *dlt_sec;
123 asection *dlt_rel_sec;
124 asection *plt_sec;
125 asection *plt_rel_sec;
126 asection *opd_sec;
127 asection *opd_rel_sec;
128 asection *other_rel_sec;
129
130 /* Offset of __gp within .plt section. When the PLT gets large we want
131 to slide __gp into the PLT section so that we can continue to use
132 single DP relative instructions to load values out of the PLT. */
133 bfd_vma gp_offset;
134
135 /* Note this is not strictly correct. We should create a stub section for
136 each input section with calls. The stub section should be placed before
137 the section with the call. */
138 asection *stub_sec;
139
140 bfd_vma text_segment_base;
141 bfd_vma data_segment_base;
142
143 struct elf64_hppa_dyn_hash_table dyn_hash_table;
144
145 /* We build tables to map from an input section back to its
146 symbol index. This is the BFD for which we currently have
147 a map. */
148 bfd *section_syms_bfd;
149
150 /* Array of symbol numbers for each input section attached to the
151 current BFD. */
152 int *section_syms;
153};
154
155#define elf64_hppa_hash_table(p) \
156 ((struct elf64_hppa_link_hash_table *) ((p)->hash))
157
158typedef struct bfd_hash_entry *(*new_hash_entry_func)
159 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
160
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161static struct bfd_hash_entry *elf64_hppa_new_dyn_hash_entry
162 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
163 const char *string));
164static struct bfd_link_hash_table *elf64_hppa_hash_table_create
165 PARAMS ((bfd *abfd));
166static struct elf64_hppa_dyn_hash_entry *elf64_hppa_dyn_hash_lookup
167 PARAMS ((struct elf64_hppa_dyn_hash_table *table, const char *string,
b34976b6 168 bfd_boolean create, bfd_boolean copy));
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169static void elf64_hppa_dyn_hash_traverse
170 PARAMS ((struct elf64_hppa_dyn_hash_table *table,
b34976b6 171 bfd_boolean (*func) (struct elf64_hppa_dyn_hash_entry *, PTR),
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172 PTR info));
173
174static const char *get_dyn_name
d63b5ed9 175 PARAMS ((bfd *, struct elf_link_hash_entry *,
0ba2a60e 176 const Elf_Internal_Rela *, char **, size_t *));
15bda425 177
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178/* This must follow the definitions of the various derived linker
179 hash tables and shared functions. */
180#include "elf-hppa.h"
181
b34976b6 182static bfd_boolean elf64_hppa_object_p
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183 PARAMS ((bfd *));
184
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185static void elf64_hppa_post_process_headers
186 PARAMS ((bfd *, struct bfd_link_info *));
187
b34976b6 188static bfd_boolean elf64_hppa_create_dynamic_sections
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189 PARAMS ((bfd *, struct bfd_link_info *));
190
b34976b6 191static bfd_boolean elf64_hppa_adjust_dynamic_symbol
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192 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
193
b34976b6 194static bfd_boolean elf64_hppa_mark_milli_and_exported_functions
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195 PARAMS ((struct elf_link_hash_entry *, PTR));
196
b34976b6 197static bfd_boolean elf64_hppa_size_dynamic_sections
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198 PARAMS ((bfd *, struct bfd_link_info *));
199
b34976b6 200static bfd_boolean elf64_hppa_link_output_symbol_hook
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201 PARAMS ((struct bfd_link_info *, const char *, Elf_Internal_Sym *,
202 asection *, struct elf_link_hash_entry *));
99c79b2e 203
b34976b6 204static bfd_boolean elf64_hppa_finish_dynamic_symbol
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205 PARAMS ((bfd *, struct bfd_link_info *,
206 struct elf_link_hash_entry *, Elf_Internal_Sym *));
fe8bc63d 207
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208static enum elf_reloc_type_class elf64_hppa_reloc_type_class
209 PARAMS ((const Elf_Internal_Rela *));
210
b34976b6 211static bfd_boolean elf64_hppa_finish_dynamic_sections
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212 PARAMS ((bfd *, struct bfd_link_info *));
213
b34976b6 214static bfd_boolean elf64_hppa_check_relocs
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215 PARAMS ((bfd *, struct bfd_link_info *,
216 asection *, const Elf_Internal_Rela *));
217
b34976b6 218static bfd_boolean elf64_hppa_dynamic_symbol_p
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219 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
220
b34976b6 221static bfd_boolean elf64_hppa_mark_exported_functions
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222 PARAMS ((struct elf_link_hash_entry *, PTR));
223
b34976b6 224static bfd_boolean elf64_hppa_finalize_opd
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225 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
226
b34976b6 227static bfd_boolean elf64_hppa_finalize_dlt
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228 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
229
b34976b6 230static bfd_boolean allocate_global_data_dlt
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231 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
232
b34976b6 233static bfd_boolean allocate_global_data_plt
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234 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
235
b34976b6 236static bfd_boolean allocate_global_data_stub
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237 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
238
b34976b6 239static bfd_boolean allocate_global_data_opd
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240 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
241
b34976b6 242static bfd_boolean get_reloc_section
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243 PARAMS ((bfd *, struct elf64_hppa_link_hash_table *, asection *));
244
b34976b6 245static bfd_boolean count_dyn_reloc
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246 PARAMS ((bfd *, struct elf64_hppa_dyn_hash_entry *,
247 int, asection *, int, bfd_vma, bfd_vma));
248
b34976b6 249static bfd_boolean allocate_dynrel_entries
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250 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
251
b34976b6 252static bfd_boolean elf64_hppa_finalize_dynreloc
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253 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
254
b34976b6 255static bfd_boolean get_opd
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256 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
257
b34976b6 258static bfd_boolean get_plt
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259 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
260
b34976b6 261static bfd_boolean get_dlt
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262 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
263
b34976b6 264static bfd_boolean get_stub
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265 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
266
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AM
267static int elf64_hppa_elf_get_symbol_type
268 PARAMS ((Elf_Internal_Sym *, int));
269
b34976b6 270static bfd_boolean
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271elf64_hppa_dyn_hash_table_init (struct elf64_hppa_dyn_hash_table *ht,
272 bfd *abfd ATTRIBUTE_UNUSED,
273 new_hash_entry_func new,
274 unsigned int entsize)
15bda425 275{
fe8bc63d 276 memset (ht, 0, sizeof (*ht));
66eb6687 277 return bfd_hash_table_init (&ht->root, new, entsize);
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278}
279
280static struct bfd_hash_entry*
281elf64_hppa_new_dyn_hash_entry (entry, table, string)
282 struct bfd_hash_entry *entry;
283 struct bfd_hash_table *table;
284 const char *string;
285{
286 struct elf64_hppa_dyn_hash_entry *ret;
287 ret = (struct elf64_hppa_dyn_hash_entry *) entry;
288
289 /* Allocate the structure if it has not already been allocated by a
290 subclass. */
291 if (!ret)
292 ret = bfd_hash_allocate (table, sizeof (*ret));
293
294 if (!ret)
295 return 0;
296
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297 /* Call the allocation method of the superclass. */
298 ret = ((struct elf64_hppa_dyn_hash_entry *)
299 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
300
336549c1
AM
301 /* Initialize our local data. All zeros. */
302 memset (&ret->dlt_offset, 0,
303 (sizeof (struct elf64_hppa_dyn_hash_entry)
304 - offsetof (struct elf64_hppa_dyn_hash_entry, dlt_offset)));
305
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306 return &ret->root;
307}
308
309/* Create the derived linker hash table. The PA64 ELF port uses this
310 derived hash table to keep information specific to the PA ElF
311 linker (without using static variables). */
312
313static struct bfd_link_hash_table*
314elf64_hppa_hash_table_create (abfd)
315 bfd *abfd;
316{
317 struct elf64_hppa_link_hash_table *ret;
318
dc810e39 319 ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret));
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320 if (!ret)
321 return 0;
322 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
66eb6687
AM
323 _bfd_elf_link_hash_newfunc,
324 sizeof (struct elf_link_hash_entry)))
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325 {
326 bfd_release (abfd, ret);
327 return 0;
328 }
329
330 if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd,
66eb6687
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331 elf64_hppa_new_dyn_hash_entry,
332 sizeof (struct elf64_hppa_dyn_hash_entry)))
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333 return 0;
334 return &ret->root.root;
335}
336
337/* Look up an entry in a PA64 ELF linker hash table. */
338
339static struct elf64_hppa_dyn_hash_entry *
340elf64_hppa_dyn_hash_lookup(table, string, create, copy)
341 struct elf64_hppa_dyn_hash_table *table;
342 const char *string;
b34976b6 343 bfd_boolean create, copy;
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344{
345 return ((struct elf64_hppa_dyn_hash_entry *)
346 bfd_hash_lookup (&table->root, string, create, copy));
347}
348
349/* Traverse a PA64 ELF linker hash table. */
350
351static void
352elf64_hppa_dyn_hash_traverse (table, func, info)
353 struct elf64_hppa_dyn_hash_table *table;
b34976b6 354 bfd_boolean (*func) PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
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355 PTR info;
356{
357 (bfd_hash_traverse
358 (&table->root,
b34976b6 359 (bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) func,
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360 info));
361}
362\f
363/* Return nonzero if ABFD represents a PA2.0 ELF64 file.
364
365 Additionally we set the default architecture and machine. */
b34976b6 366static bfd_boolean
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367elf64_hppa_object_p (abfd)
368 bfd *abfd;
369{
24a5e751
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370 Elf_Internal_Ehdr * i_ehdrp;
371 unsigned int flags;
d9634ba1 372
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L
373 i_ehdrp = elf_elfheader (abfd);
374 if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0)
375 {
6c21aa76
NC
376 /* GCC on hppa-linux produces binaries with OSABI=Linux,
377 but the kernel produces corefiles with OSABI=SysV. */
d97a8924
DA
378 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX
379 && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
b34976b6 380 return FALSE;
24a5e751
L
381 }
382 else
383 {
d97a8924
DA
384 /* HPUX produces binaries with OSABI=HPUX,
385 but the kernel produces corefiles with OSABI=SysV. */
386 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX
387 && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
b34976b6 388 return FALSE;
24a5e751
L
389 }
390
391 flags = i_ehdrp->e_flags;
d9634ba1
AM
392 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
393 {
394 case EFA_PARISC_1_0:
395 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
396 case EFA_PARISC_1_1:
397 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
398 case EFA_PARISC_2_0:
d97a8924
DA
399 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
400 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
401 else
402 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
d9634ba1
AM
403 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
404 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
405 }
406 /* Don't be fussy. */
b34976b6 407 return TRUE;
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408}
409
410/* Given section type (hdr->sh_type), return a boolean indicating
411 whether or not the section is an elf64-hppa specific section. */
b34976b6 412static bfd_boolean
6dc132d9
L
413elf64_hppa_section_from_shdr (bfd *abfd,
414 Elf_Internal_Shdr *hdr,
415 const char *name,
416 int shindex)
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417{
418 asection *newsect;
419
420 switch (hdr->sh_type)
421 {
422 case SHT_PARISC_EXT:
423 if (strcmp (name, ".PARISC.archext") != 0)
b34976b6 424 return FALSE;
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425 break;
426 case SHT_PARISC_UNWIND:
427 if (strcmp (name, ".PARISC.unwind") != 0)
b34976b6 428 return FALSE;
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429 break;
430 case SHT_PARISC_DOC:
431 case SHT_PARISC_ANNOT:
432 default:
b34976b6 433 return FALSE;
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434 }
435
6dc132d9 436 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
b34976b6 437 return FALSE;
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438 newsect = hdr->bfd_section;
439
b34976b6 440 return TRUE;
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441}
442
15bda425 443/* Construct a string for use in the elf64_hppa_dyn_hash_table. The
fe8bc63d 444 name describes what was once potentially anonymous memory. We
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445 allocate memory as necessary, possibly reusing PBUF/PLEN. */
446
447static const char *
d63b5ed9
DA
448get_dyn_name (abfd, h, rel, pbuf, plen)
449 bfd *abfd;
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450 struct elf_link_hash_entry *h;
451 const Elf_Internal_Rela *rel;
452 char **pbuf;
453 size_t *plen;
454{
d63b5ed9 455 asection *sec = abfd->sections;
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456 size_t nlen, tlen;
457 char *buf;
458 size_t len;
459
460 if (h && rel->r_addend == 0)
461 return h->root.root.string;
462
463 if (h)
464 nlen = strlen (h->root.root.string);
465 else
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AM
466 nlen = 8 + 1 + sizeof (rel->r_info) * 2 - 8;
467 tlen = nlen + 1 + sizeof (rel->r_addend) * 2 + 1;
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468
469 len = *plen;
470 buf = *pbuf;
471 if (len < tlen)
472 {
473 if (buf)
474 free (buf);
475 *pbuf = buf = malloc (tlen);
476 *plen = len = tlen;
477 if (!buf)
478 return NULL;
479 }
480
481 if (h)
482 {
483 memcpy (buf, h->root.root.string, nlen);
0ba2a60e 484 buf[nlen++] = '+';
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485 sprintf_vma (buf + nlen, rel->r_addend);
486 }
487 else
488 {
0ba2a60e
AM
489 nlen = sprintf (buf, "%x:%lx",
490 sec->id & 0xffffffff,
491 (long) ELF64_R_SYM (rel->r_info));
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492 if (rel->r_addend)
493 {
494 buf[nlen++] = '+';
495 sprintf_vma (buf + nlen, rel->r_addend);
496 }
497 }
498
499 return buf;
500}
501
502/* SEC is a section containing relocs for an input BFD when linking; return
503 a suitable section for holding relocs in the output BFD for a link. */
504
b34976b6 505static bfd_boolean
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506get_reloc_section (abfd, hppa_info, sec)
507 bfd *abfd;
508 struct elf64_hppa_link_hash_table *hppa_info;
509 asection *sec;
510{
511 const char *srel_name;
512 asection *srel;
513 bfd *dynobj;
514
515 srel_name = (bfd_elf_string_from_elf_section
516 (abfd, elf_elfheader(abfd)->e_shstrndx,
517 elf_section_data(sec)->rel_hdr.sh_name));
518 if (srel_name == NULL)
b34976b6 519 return FALSE;
15bda425 520
0112cd26 521 BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela")
15bda425 522 && strcmp (bfd_get_section_name (abfd, sec),
0112cd26
NC
523 srel_name + 5) == 0)
524 || (CONST_STRNEQ (srel_name, ".rel")
15bda425 525 && strcmp (bfd_get_section_name (abfd, sec),
0112cd26 526 srel_name + 4) == 0));
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527
528 dynobj = hppa_info->root.dynobj;
529 if (!dynobj)
530 hppa_info->root.dynobj = dynobj = abfd;
531
532 srel = bfd_get_section_by_name (dynobj, srel_name);
533 if (srel == NULL)
534 {
3496cb2a
L
535 srel = bfd_make_section_with_flags (dynobj, srel_name,
536 (SEC_ALLOC
537 | SEC_LOAD
538 | SEC_HAS_CONTENTS
539 | SEC_IN_MEMORY
540 | SEC_LINKER_CREATED
541 | SEC_READONLY));
15bda425 542 if (srel == NULL
15bda425 543 || !bfd_set_section_alignment (dynobj, srel, 3))
b34976b6 544 return FALSE;
15bda425
JL
545 }
546
547 hppa_info->other_rel_sec = srel;
b34976b6 548 return TRUE;
15bda425
JL
549}
550
fe8bc63d 551/* Add a new entry to the list of dynamic relocations against DYN_H.
15bda425
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552
553 We use this to keep a record of all the FPTR relocations against a
554 particular symbol so that we can create FPTR relocations in the
555 output file. */
556
b34976b6 557static bfd_boolean
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558count_dyn_reloc (abfd, dyn_h, type, sec, sec_symndx, offset, addend)
559 bfd *abfd;
560 struct elf64_hppa_dyn_hash_entry *dyn_h;
561 int type;
562 asection *sec;
563 int sec_symndx;
564 bfd_vma offset;
565 bfd_vma addend;
566{
567 struct elf64_hppa_dyn_reloc_entry *rent;
568
569 rent = (struct elf64_hppa_dyn_reloc_entry *)
dc810e39 570 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent));
15bda425 571 if (!rent)
b34976b6 572 return FALSE;
15bda425
JL
573
574 rent->next = dyn_h->reloc_entries;
575 rent->type = type;
576 rent->sec = sec;
577 rent->sec_symndx = sec_symndx;
578 rent->offset = offset;
579 rent->addend = addend;
580 dyn_h->reloc_entries = rent;
581
b34976b6 582 return TRUE;
15bda425
JL
583}
584
585/* Scan the RELOCS and record the type of dynamic entries that each
586 referenced symbol needs. */
587
b34976b6 588static bfd_boolean
15bda425
JL
589elf64_hppa_check_relocs (abfd, info, sec, relocs)
590 bfd *abfd;
591 struct bfd_link_info *info;
592 asection *sec;
593 const Elf_Internal_Rela *relocs;
594{
595 struct elf64_hppa_link_hash_table *hppa_info;
596 const Elf_Internal_Rela *relend;
597 Elf_Internal_Shdr *symtab_hdr;
598 const Elf_Internal_Rela *rel;
599 asection *dlt, *plt, *stubs;
600 char *buf;
601 size_t buf_len;
602 int sec_symndx;
603
1049f94e 604 if (info->relocatable)
b34976b6 605 return TRUE;
15bda425
JL
606
607 /* If this is the first dynamic object found in the link, create
608 the special sections required for dynamic linking. */
609 if (! elf_hash_table (info)->dynamic_sections_created)
610 {
45d6a902 611 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
b34976b6 612 return FALSE;
15bda425
JL
613 }
614
615 hppa_info = elf64_hppa_hash_table (info);
616 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
617
618 /* If necessary, build a new table holding section symbols indices
6cdc0ccc 619 for this BFD. */
fe8bc63d 620
15bda425
JL
621 if (info->shared && hppa_info->section_syms_bfd != abfd)
622 {
832d951b 623 unsigned long i;
9ad5cbcf 624 unsigned int highest_shndx;
6cdc0ccc
AM
625 Elf_Internal_Sym *local_syms = NULL;
626 Elf_Internal_Sym *isym, *isymend;
dc810e39 627 bfd_size_type amt;
15bda425
JL
628
629 /* We're done with the old cache of section index to section symbol
630 index information. Free it.
631
632 ?!? Note we leak the last section_syms array. Presumably we
633 could free it in one of the later routines in this file. */
634 if (hppa_info->section_syms)
635 free (hppa_info->section_syms);
636
6cdc0ccc
AM
637 /* Read this BFD's local symbols. */
638 if (symtab_hdr->sh_info != 0)
47b7c2db 639 {
6cdc0ccc
AM
640 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
641 if (local_syms == NULL)
642 local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr,
643 symtab_hdr->sh_info, 0,
644 NULL, NULL, NULL);
645 if (local_syms == NULL)
b34976b6 646 return FALSE;
9ad5cbcf
AM
647 }
648
6cdc0ccc 649 /* Record the highest section index referenced by the local symbols. */
15bda425 650 highest_shndx = 0;
6cdc0ccc
AM
651 isymend = local_syms + symtab_hdr->sh_info;
652 for (isym = local_syms; isym < isymend; isym++)
15bda425 653 {
15bda425
JL
654 if (isym->st_shndx > highest_shndx)
655 highest_shndx = isym->st_shndx;
656 }
657
15bda425
JL
658 /* Allocate an array to hold the section index to section symbol index
659 mapping. Bump by one since we start counting at zero. */
660 highest_shndx++;
dc810e39
AM
661 amt = highest_shndx;
662 amt *= sizeof (int);
663 hppa_info->section_syms = (int *) bfd_malloc (amt);
15bda425
JL
664
665 /* Now walk the local symbols again. If we find a section symbol,
666 record the index of the symbol into the section_syms array. */
6cdc0ccc 667 for (i = 0, isym = local_syms; isym < isymend; i++, isym++)
15bda425
JL
668 {
669 if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
670 hppa_info->section_syms[isym->st_shndx] = i;
671 }
672
6cdc0ccc
AM
673 /* We are finished with the local symbols. */
674 if (local_syms != NULL
675 && symtab_hdr->contents != (unsigned char *) local_syms)
676 {
677 if (! info->keep_memory)
678 free (local_syms);
679 else
680 {
681 /* Cache the symbols for elf_link_input_bfd. */
682 symtab_hdr->contents = (unsigned char *) local_syms;
683 }
684 }
15bda425
JL
685
686 /* Record which BFD we built the section_syms mapping for. */
687 hppa_info->section_syms_bfd = abfd;
688 }
689
690 /* Record the symbol index for this input section. We may need it for
691 relocations when building shared libraries. When not building shared
692 libraries this value is never really used, but assign it to zero to
693 prevent out of bounds memory accesses in other routines. */
694 if (info->shared)
695 {
696 sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec);
697
698 /* If we did not find a section symbol for this section, then
699 something went terribly wrong above. */
700 if (sec_symndx == -1)
b34976b6 701 return FALSE;
15bda425
JL
702
703 sec_symndx = hppa_info->section_syms[sec_symndx];
704 }
705 else
706 sec_symndx = 0;
fe8bc63d 707
15bda425
JL
708 dlt = plt = stubs = NULL;
709 buf = NULL;
710 buf_len = 0;
711
712 relend = relocs + sec->reloc_count;
713 for (rel = relocs; rel < relend; ++rel)
714 {
560e09e9
NC
715 enum
716 {
717 NEED_DLT = 1,
718 NEED_PLT = 2,
719 NEED_STUB = 4,
720 NEED_OPD = 8,
721 NEED_DYNREL = 16,
722 };
15bda425
JL
723
724 struct elf_link_hash_entry *h = NULL;
725 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
726 struct elf64_hppa_dyn_hash_entry *dyn_h;
727 int need_entry;
728 const char *addr_name;
b34976b6 729 bfd_boolean maybe_dynamic;
15bda425
JL
730 int dynrel_type = R_PARISC_NONE;
731 static reloc_howto_type *howto;
732
733 if (r_symndx >= symtab_hdr->sh_info)
734 {
735 /* We're dealing with a global symbol -- find its hash entry
736 and mark it as being referenced. */
737 long indx = r_symndx - symtab_hdr->sh_info;
738 h = elf_sym_hashes (abfd)[indx];
739 while (h->root.type == bfd_link_hash_indirect
740 || h->root.type == bfd_link_hash_warning)
741 h = (struct elf_link_hash_entry *) h->root.u.i.link;
742
f5385ebf 743 h->ref_regular = 1;
15bda425
JL
744 }
745
746 /* We can only get preliminary data on whether a symbol is
747 locally or externally defined, as not all of the input files
748 have yet been processed. Do something with what we know, as
749 this may help reduce memory usage and processing time later. */
b34976b6 750 maybe_dynamic = FALSE;
671bae9c 751 if (h && ((info->shared
f5385ebf
AM
752 && (!info->symbolic
753 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
754 || !h->def_regular
15bda425 755 || h->root.type == bfd_link_hash_defweak))
b34976b6 756 maybe_dynamic = TRUE;
15bda425
JL
757
758 howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info);
759 need_entry = 0;
760 switch (howto->type)
761 {
762 /* These are simple indirect references to symbols through the
763 DLT. We need to create a DLT entry for any symbols which
764 appears in a DLTIND relocation. */
765 case R_PARISC_DLTIND21L:
766 case R_PARISC_DLTIND14R:
767 case R_PARISC_DLTIND14F:
768 case R_PARISC_DLTIND14WR:
769 case R_PARISC_DLTIND14DR:
770 need_entry = NEED_DLT;
771 break;
772
773 /* ?!? These need a DLT entry. But I have no idea what to do with
774 the "link time TP value. */
775 case R_PARISC_LTOFF_TP21L:
776 case R_PARISC_LTOFF_TP14R:
777 case R_PARISC_LTOFF_TP14F:
778 case R_PARISC_LTOFF_TP64:
779 case R_PARISC_LTOFF_TP14WR:
780 case R_PARISC_LTOFF_TP14DR:
781 case R_PARISC_LTOFF_TP16F:
782 case R_PARISC_LTOFF_TP16WF:
783 case R_PARISC_LTOFF_TP16DF:
784 need_entry = NEED_DLT;
785 break;
786
787 /* These are function calls. Depending on their precise target we
788 may need to make a stub for them. The stub uses the PLT, so we
789 need to create PLT entries for these symbols too. */
832d951b 790 case R_PARISC_PCREL12F:
15bda425
JL
791 case R_PARISC_PCREL17F:
792 case R_PARISC_PCREL22F:
793 case R_PARISC_PCREL32:
794 case R_PARISC_PCREL64:
795 case R_PARISC_PCREL21L:
796 case R_PARISC_PCREL17R:
797 case R_PARISC_PCREL17C:
798 case R_PARISC_PCREL14R:
799 case R_PARISC_PCREL14F:
800 case R_PARISC_PCREL22C:
801 case R_PARISC_PCREL14WR:
802 case R_PARISC_PCREL14DR:
803 case R_PARISC_PCREL16F:
804 case R_PARISC_PCREL16WF:
805 case R_PARISC_PCREL16DF:
806 need_entry = (NEED_PLT | NEED_STUB);
807 break;
808
809 case R_PARISC_PLTOFF21L:
810 case R_PARISC_PLTOFF14R:
811 case R_PARISC_PLTOFF14F:
812 case R_PARISC_PLTOFF14WR:
813 case R_PARISC_PLTOFF14DR:
814 case R_PARISC_PLTOFF16F:
815 case R_PARISC_PLTOFF16WF:
816 case R_PARISC_PLTOFF16DF:
817 need_entry = (NEED_PLT);
818 break;
819
820 case R_PARISC_DIR64:
821 if (info->shared || maybe_dynamic)
822 need_entry = (NEED_DYNREL);
823 dynrel_type = R_PARISC_DIR64;
824 break;
825
826 /* This is an indirect reference through the DLT to get the address
827 of a OPD descriptor. Thus we need to make a DLT entry that points
828 to an OPD entry. */
829 case R_PARISC_LTOFF_FPTR21L:
830 case R_PARISC_LTOFF_FPTR14R:
831 case R_PARISC_LTOFF_FPTR14WR:
832 case R_PARISC_LTOFF_FPTR14DR:
833 case R_PARISC_LTOFF_FPTR32:
834 case R_PARISC_LTOFF_FPTR64:
835 case R_PARISC_LTOFF_FPTR16F:
836 case R_PARISC_LTOFF_FPTR16WF:
837 case R_PARISC_LTOFF_FPTR16DF:
838 if (info->shared || maybe_dynamic)
839 need_entry = (NEED_DLT | NEED_OPD);
840 else
841 need_entry = (NEED_DLT | NEED_OPD);
842 dynrel_type = R_PARISC_FPTR64;
843 break;
844
845 /* This is a simple OPD entry. */
846 case R_PARISC_FPTR64:
847 if (info->shared || maybe_dynamic)
848 need_entry = (NEED_OPD | NEED_DYNREL);
849 else
850 need_entry = (NEED_OPD);
851 dynrel_type = R_PARISC_FPTR64;
852 break;
853
854 /* Add more cases as needed. */
855 }
856
857 if (!need_entry)
858 continue;
859
860 /* Collect a canonical name for this address. */
d63b5ed9 861 addr_name = get_dyn_name (abfd, h, rel, &buf, &buf_len);
15bda425
JL
862
863 /* Collect the canonical entry data for this address. */
864 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
b34976b6 865 addr_name, TRUE, TRUE);
15bda425
JL
866 BFD_ASSERT (dyn_h);
867
868 /* Stash away enough information to be able to find this symbol
869 regardless of whether or not it is local or global. */
870 dyn_h->h = h;
871 dyn_h->owner = abfd;
872 dyn_h->sym_indx = r_symndx;
873
874 /* ?!? We may need to do some error checking in here. */
875 /* Create what's needed. */
876 if (need_entry & NEED_DLT)
877 {
878 if (! hppa_info->dlt_sec
879 && ! get_dlt (abfd, info, hppa_info))
880 goto err_out;
881 dyn_h->want_dlt = 1;
882 }
883
884 if (need_entry & NEED_PLT)
885 {
886 if (! hppa_info->plt_sec
887 && ! get_plt (abfd, info, hppa_info))
888 goto err_out;
889 dyn_h->want_plt = 1;
890 }
891
892 if (need_entry & NEED_STUB)
893 {
894 if (! hppa_info->stub_sec
895 && ! get_stub (abfd, info, hppa_info))
896 goto err_out;
897 dyn_h->want_stub = 1;
898 }
899
900 if (need_entry & NEED_OPD)
901 {
902 if (! hppa_info->opd_sec
903 && ! get_opd (abfd, info, hppa_info))
904 goto err_out;
905
906 dyn_h->want_opd = 1;
907
908 /* FPTRs are not allocated by the dynamic linker for PA64, though
909 it is possible that will change in the future. */
fe8bc63d 910
15bda425
JL
911 /* This could be a local function that had its address taken, in
912 which case H will be NULL. */
913 if (h)
f5385ebf 914 h->needs_plt = 1;
15bda425
JL
915 }
916
917 /* Add a new dynamic relocation to the chain of dynamic
918 relocations for this symbol. */
919 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
920 {
921 if (! hppa_info->other_rel_sec
922 && ! get_reloc_section (abfd, hppa_info, sec))
923 goto err_out;
924
925 if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec,
926 sec_symndx, rel->r_offset, rel->r_addend))
927 goto err_out;
928
929 /* If we are building a shared library and we just recorded
930 a dynamic R_PARISC_FPTR64 relocation, then make sure the
931 section symbol for this section ends up in the dynamic
932 symbol table. */
933 if (info->shared && dynrel_type == R_PARISC_FPTR64
c152c796 934 && ! (bfd_elf_link_record_local_dynamic_symbol
15bda425 935 (info, abfd, sec_symndx)))
b34976b6 936 return FALSE;
15bda425
JL
937 }
938 }
939
940 if (buf)
941 free (buf);
b34976b6 942 return TRUE;
15bda425
JL
943
944 err_out:
945 if (buf)
946 free (buf);
b34976b6 947 return FALSE;
15bda425
JL
948}
949
950struct elf64_hppa_allocate_data
951{
952 struct bfd_link_info *info;
953 bfd_size_type ofs;
954};
955
956/* Should we do dynamic things to this symbol? */
957
b34976b6 958static bfd_boolean
15bda425
JL
959elf64_hppa_dynamic_symbol_p (h, info)
960 struct elf_link_hash_entry *h;
961 struct bfd_link_info *info;
962{
986a241f
RH
963 /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols
964 and relocations that retrieve a function descriptor? Assume the
965 worst for now. */
966 if (_bfd_elf_dynamic_symbol_p (h, info, 1))
967 {
968 /* ??? Why is this here and not elsewhere is_local_label_name. */
969 if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$')
970 return FALSE;
15bda425 971
986a241f
RH
972 return TRUE;
973 }
974 else
b34976b6 975 return FALSE;
15bda425
JL
976}
977
4cc11e76 978/* Mark all functions exported by this file so that we can later allocate
15bda425
JL
979 entries in .opd for them. */
980
b34976b6 981static bfd_boolean
15bda425
JL
982elf64_hppa_mark_exported_functions (h, data)
983 struct elf_link_hash_entry *h;
984 PTR data;
985{
986 struct bfd_link_info *info = (struct bfd_link_info *)data;
987 struct elf64_hppa_link_hash_table *hppa_info;
988
989 hppa_info = elf64_hppa_hash_table (info);
990
e92d460e
AM
991 if (h->root.type == bfd_link_hash_warning)
992 h = (struct elf_link_hash_entry *) h->root.u.i.link;
993
15bda425
JL
994 if (h
995 && (h->root.type == bfd_link_hash_defined
996 || h->root.type == bfd_link_hash_defweak)
997 && h->root.u.def.section->output_section != NULL
998 && h->type == STT_FUNC)
999 {
1000 struct elf64_hppa_dyn_hash_entry *dyn_h;
1001
1002 /* Add this symbol to the PA64 linker hash table. */
1003 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
b34976b6 1004 h->root.root.string, TRUE, TRUE);
15bda425
JL
1005 BFD_ASSERT (dyn_h);
1006 dyn_h->h = h;
1007
1008 if (! hppa_info->opd_sec
1009 && ! get_opd (hppa_info->root.dynobj, info, hppa_info))
b34976b6 1010 return FALSE;
15bda425
JL
1011
1012 dyn_h->want_opd = 1;
832d951b
AM
1013 /* Put a flag here for output_symbol_hook. */
1014 dyn_h->st_shndx = -1;
f5385ebf 1015 h->needs_plt = 1;
15bda425
JL
1016 }
1017
b34976b6 1018 return TRUE;
15bda425
JL
1019}
1020
1021/* Allocate space for a DLT entry. */
1022
b34976b6 1023static bfd_boolean
15bda425
JL
1024allocate_global_data_dlt (dyn_h, data)
1025 struct elf64_hppa_dyn_hash_entry *dyn_h;
1026 PTR data;
1027{
1028 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1029
1030 if (dyn_h->want_dlt)
1031 {
1032 struct elf_link_hash_entry *h = dyn_h->h;
1033
1034 if (x->info->shared)
1035 {
1036 /* Possibly add the symbol to the local dynamic symbol
1037 table since we might need to create a dynamic relocation
1038 against it. */
1039 if (! h
47b7c2db 1040 || (h->dynindx == -1 && h->type != STT_PARISC_MILLI))
15bda425
JL
1041 {
1042 bfd *owner;
1043 owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
1044
c152c796 1045 if (! (bfd_elf_link_record_local_dynamic_symbol
dc810e39 1046 (x->info, owner, dyn_h->sym_indx)))
b34976b6 1047 return FALSE;
15bda425
JL
1048 }
1049 }
1050
1051 dyn_h->dlt_offset = x->ofs;
1052 x->ofs += DLT_ENTRY_SIZE;
1053 }
b34976b6 1054 return TRUE;
15bda425
JL
1055}
1056
1057/* Allocate space for a DLT.PLT entry. */
1058
b34976b6 1059static bfd_boolean
15bda425
JL
1060allocate_global_data_plt (dyn_h, data)
1061 struct elf64_hppa_dyn_hash_entry *dyn_h;
1062 PTR data;
1063{
1064 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1065
1066 if (dyn_h->want_plt
1067 && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
1068 && !((dyn_h->h->root.type == bfd_link_hash_defined
1069 || dyn_h->h->root.type == bfd_link_hash_defweak)
1070 && dyn_h->h->root.u.def.section->output_section != NULL))
1071 {
1072 dyn_h->plt_offset = x->ofs;
1073 x->ofs += PLT_ENTRY_SIZE;
1074 if (dyn_h->plt_offset < 0x2000)
1075 elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset;
1076 }
1077 else
1078 dyn_h->want_plt = 0;
1079
b34976b6 1080 return TRUE;
15bda425
JL
1081}
1082
1083/* Allocate space for a STUB entry. */
1084
b34976b6 1085static bfd_boolean
15bda425
JL
1086allocate_global_data_stub (dyn_h, data)
1087 struct elf64_hppa_dyn_hash_entry *dyn_h;
1088 PTR data;
1089{
1090 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1091
1092 if (dyn_h->want_stub
1093 && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
1094 && !((dyn_h->h->root.type == bfd_link_hash_defined
1095 || dyn_h->h->root.type == bfd_link_hash_defweak)
1096 && dyn_h->h->root.u.def.section->output_section != NULL))
1097 {
1098 dyn_h->stub_offset = x->ofs;
1099 x->ofs += sizeof (plt_stub);
1100 }
1101 else
1102 dyn_h->want_stub = 0;
b34976b6 1103 return TRUE;
15bda425
JL
1104}
1105
1106/* Allocate space for a FPTR entry. */
1107
b34976b6 1108static bfd_boolean
15bda425
JL
1109allocate_global_data_opd (dyn_h, data)
1110 struct elf64_hppa_dyn_hash_entry *dyn_h;
1111 PTR data;
1112{
1113 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1114
1115 if (dyn_h->want_opd)
1116 {
1117 struct elf_link_hash_entry *h = dyn_h->h;
fe8bc63d 1118
15bda425
JL
1119 if (h)
1120 while (h->root.type == bfd_link_hash_indirect
1121 || h->root.type == bfd_link_hash_warning)
1122 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1123
1124 /* We never need an opd entry for a symbol which is not
1125 defined by this output file. */
3db4b612 1126 if (h && (h->root.type == bfd_link_hash_undefined
af7cfa33 1127 || h->root.type == bfd_link_hash_undefweak
3db4b612 1128 || h->root.u.def.section->output_section == NULL))
15bda425
JL
1129 dyn_h->want_opd = 0;
1130
1131 /* If we are creating a shared library, took the address of a local
1132 function or might export this function from this object file, then
1133 we have to create an opd descriptor. */
1134 else if (x->info->shared
1135 || h == NULL
47b7c2db 1136 || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)
3db4b612
JL
1137 || (h->root.type == bfd_link_hash_defined
1138 || h->root.type == bfd_link_hash_defweak))
15bda425
JL
1139 {
1140 /* If we are creating a shared library, then we will have to
1141 create a runtime relocation for the symbol to properly
1142 initialize the .opd entry. Make sure the symbol gets
1143 added to the dynamic symbol table. */
1144 if (x->info->shared
1145 && (h == NULL || (h->dynindx == -1)))
1146 {
1147 bfd *owner;
1148 owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
1149
c152c796 1150 if (!bfd_elf_link_record_local_dynamic_symbol
15bda425 1151 (x->info, owner, dyn_h->sym_indx))
b34976b6 1152 return FALSE;
15bda425
JL
1153 }
1154
1155 /* This may not be necessary or desirable anymore now that
1156 we have some support for dealing with section symbols
1157 in dynamic relocs. But name munging does make the result
1158 much easier to debug. ie, the EPLT reloc will reference
1159 a symbol like .foobar, instead of .text + offset. */
1160 if (x->info->shared && h)
1161 {
1162 char *new_name;
1163 struct elf_link_hash_entry *nh;
1164
1165 new_name = alloca (strlen (h->root.root.string) + 2);
1166 new_name[0] = '.';
1167 strcpy (new_name + 1, h->root.root.string);
1168
1169 nh = elf_link_hash_lookup (elf_hash_table (x->info),
b34976b6 1170 new_name, TRUE, TRUE, TRUE);
15bda425
JL
1171
1172 nh->root.type = h->root.type;
1173 nh->root.u.def.value = h->root.u.def.value;
1174 nh->root.u.def.section = h->root.u.def.section;
1175
c152c796 1176 if (! bfd_elf_link_record_dynamic_symbol (x->info, nh))
b34976b6 1177 return FALSE;
15bda425
JL
1178
1179 }
1180 dyn_h->opd_offset = x->ofs;
1181 x->ofs += OPD_ENTRY_SIZE;
1182 }
1183
1184 /* Otherwise we do not need an opd entry. */
1185 else
1186 dyn_h->want_opd = 0;
1187 }
b34976b6 1188 return TRUE;
15bda425
JL
1189}
1190
1191/* HP requires the EI_OSABI field to be filled in. The assignment to
1192 EI_ABIVERSION may not be strictly necessary. */
1193
1194static void
1195elf64_hppa_post_process_headers (abfd, link_info)
1196 bfd * abfd;
1197 struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
1198{
1199 Elf_Internal_Ehdr * i_ehdrp;
1200
1201 i_ehdrp = elf_elfheader (abfd);
d1036acb
L
1202
1203 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
1204 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
15bda425
JL
1205}
1206
1207/* Create function descriptor section (.opd). This section is called .opd
4cc11e76 1208 because it contains "official procedure descriptors". The "official"
15bda425
JL
1209 refers to the fact that these descriptors are used when taking the address
1210 of a procedure, thus ensuring a unique address for each procedure. */
1211
b34976b6 1212static bfd_boolean
15bda425
JL
1213get_opd (abfd, info, hppa_info)
1214 bfd *abfd;
edd21aca 1215 struct bfd_link_info *info ATTRIBUTE_UNUSED;
15bda425
JL
1216 struct elf64_hppa_link_hash_table *hppa_info;
1217{
1218 asection *opd;
1219 bfd *dynobj;
1220
1221 opd = hppa_info->opd_sec;
1222 if (!opd)
1223 {
1224 dynobj = hppa_info->root.dynobj;
1225 if (!dynobj)
1226 hppa_info->root.dynobj = dynobj = abfd;
1227
3496cb2a
L
1228 opd = bfd_make_section_with_flags (dynobj, ".opd",
1229 (SEC_ALLOC
1230 | SEC_LOAD
1231 | SEC_HAS_CONTENTS
1232 | SEC_IN_MEMORY
1233 | SEC_LINKER_CREATED));
15bda425 1234 if (!opd
15bda425
JL
1235 || !bfd_set_section_alignment (abfd, opd, 3))
1236 {
1237 BFD_ASSERT (0);
b34976b6 1238 return FALSE;
15bda425
JL
1239 }
1240
1241 hppa_info->opd_sec = opd;
1242 }
1243
b34976b6 1244 return TRUE;
15bda425
JL
1245}
1246
1247/* Create the PLT section. */
1248
b34976b6 1249static bfd_boolean
15bda425
JL
1250get_plt (abfd, info, hppa_info)
1251 bfd *abfd;
edd21aca 1252 struct bfd_link_info *info ATTRIBUTE_UNUSED;
15bda425
JL
1253 struct elf64_hppa_link_hash_table *hppa_info;
1254{
1255 asection *plt;
1256 bfd *dynobj;
1257
1258 plt = hppa_info->plt_sec;
1259 if (!plt)
1260 {
1261 dynobj = hppa_info->root.dynobj;
1262 if (!dynobj)
1263 hppa_info->root.dynobj = dynobj = abfd;
1264
3496cb2a
L
1265 plt = bfd_make_section_with_flags (dynobj, ".plt",
1266 (SEC_ALLOC
1267 | SEC_LOAD
1268 | SEC_HAS_CONTENTS
1269 | SEC_IN_MEMORY
1270 | SEC_LINKER_CREATED));
15bda425 1271 if (!plt
15bda425
JL
1272 || !bfd_set_section_alignment (abfd, plt, 3))
1273 {
1274 BFD_ASSERT (0);
b34976b6 1275 return FALSE;
15bda425
JL
1276 }
1277
1278 hppa_info->plt_sec = plt;
1279 }
1280
b34976b6 1281 return TRUE;
15bda425
JL
1282}
1283
1284/* Create the DLT section. */
1285
b34976b6 1286static bfd_boolean
15bda425
JL
1287get_dlt (abfd, info, hppa_info)
1288 bfd *abfd;
edd21aca 1289 struct bfd_link_info *info ATTRIBUTE_UNUSED;
15bda425
JL
1290 struct elf64_hppa_link_hash_table *hppa_info;
1291{
1292 asection *dlt;
1293 bfd *dynobj;
1294
1295 dlt = hppa_info->dlt_sec;
1296 if (!dlt)
1297 {
1298 dynobj = hppa_info->root.dynobj;
1299 if (!dynobj)
1300 hppa_info->root.dynobj = dynobj = abfd;
1301
3496cb2a
L
1302 dlt = bfd_make_section_with_flags (dynobj, ".dlt",
1303 (SEC_ALLOC
1304 | SEC_LOAD
1305 | SEC_HAS_CONTENTS
1306 | SEC_IN_MEMORY
1307 | SEC_LINKER_CREATED));
15bda425 1308 if (!dlt
15bda425
JL
1309 || !bfd_set_section_alignment (abfd, dlt, 3))
1310 {
1311 BFD_ASSERT (0);
b34976b6 1312 return FALSE;
15bda425
JL
1313 }
1314
1315 hppa_info->dlt_sec = dlt;
1316 }
1317
b34976b6 1318 return TRUE;
15bda425
JL
1319}
1320
1321/* Create the stubs section. */
1322
b34976b6 1323static bfd_boolean
15bda425
JL
1324get_stub (abfd, info, hppa_info)
1325 bfd *abfd;
edd21aca 1326 struct bfd_link_info *info ATTRIBUTE_UNUSED;
15bda425
JL
1327 struct elf64_hppa_link_hash_table *hppa_info;
1328{
1329 asection *stub;
1330 bfd *dynobj;
1331
1332 stub = hppa_info->stub_sec;
1333 if (!stub)
1334 {
1335 dynobj = hppa_info->root.dynobj;
1336 if (!dynobj)
1337 hppa_info->root.dynobj = dynobj = abfd;
1338
3496cb2a
L
1339 stub = bfd_make_section_with_flags (dynobj, ".stub",
1340 (SEC_ALLOC | SEC_LOAD
1341 | SEC_HAS_CONTENTS
1342 | SEC_IN_MEMORY
1343 | SEC_READONLY
1344 | SEC_LINKER_CREATED));
15bda425 1345 if (!stub
15bda425
JL
1346 || !bfd_set_section_alignment (abfd, stub, 3))
1347 {
1348 BFD_ASSERT (0);
b34976b6 1349 return FALSE;
15bda425
JL
1350 }
1351
1352 hppa_info->stub_sec = stub;
1353 }
1354
b34976b6 1355 return TRUE;
15bda425
JL
1356}
1357
1358/* Create sections necessary for dynamic linking. This is only a rough
1359 cut and will likely change as we learn more about the somewhat
1360 unusual dynamic linking scheme HP uses.
1361
1362 .stub:
1363 Contains code to implement cross-space calls. The first time one
1364 of the stubs is used it will call into the dynamic linker, later
1365 calls will go straight to the target.
1366
1367 The only stub we support right now looks like
1368
1369 ldd OFFSET(%dp),%r1
1370 bve %r0(%r1)
1371 ldd OFFSET+8(%dp),%dp
1372
1373 Other stubs may be needed in the future. We may want the remove
1374 the break/nop instruction. It is only used right now to keep the
1375 offset of a .plt entry and a .stub entry in sync.
1376
1377 .dlt:
1378 This is what most people call the .got. HP used a different name.
1379 Losers.
1380
1381 .rela.dlt:
1382 Relocations for the DLT.
1383
1384 .plt:
1385 Function pointers as address,gp pairs.
1386
1387 .rela.plt:
1388 Should contain dynamic IPLT (and EPLT?) relocations.
1389
1390 .opd:
fe8bc63d 1391 FPTRS
15bda425
JL
1392
1393 .rela.opd:
1394 EPLT relocations for symbols exported from shared libraries. */
1395
b34976b6 1396static bfd_boolean
15bda425
JL
1397elf64_hppa_create_dynamic_sections (abfd, info)
1398 bfd *abfd;
1399 struct bfd_link_info *info;
1400{
1401 asection *s;
1402
1403 if (! get_stub (abfd, info, elf64_hppa_hash_table (info)))
b34976b6 1404 return FALSE;
15bda425
JL
1405
1406 if (! get_dlt (abfd, info, elf64_hppa_hash_table (info)))
b34976b6 1407 return FALSE;
15bda425
JL
1408
1409 if (! get_plt (abfd, info, elf64_hppa_hash_table (info)))
b34976b6 1410 return FALSE;
15bda425
JL
1411
1412 if (! get_opd (abfd, info, elf64_hppa_hash_table (info)))
b34976b6 1413 return FALSE;
15bda425 1414
3496cb2a
L
1415 s = bfd_make_section_with_flags (abfd, ".rela.dlt",
1416 (SEC_ALLOC | SEC_LOAD
1417 | SEC_HAS_CONTENTS
1418 | SEC_IN_MEMORY
1419 | SEC_READONLY
1420 | SEC_LINKER_CREATED));
15bda425 1421 if (s == NULL
15bda425 1422 || !bfd_set_section_alignment (abfd, s, 3))
b34976b6 1423 return FALSE;
15bda425
JL
1424 elf64_hppa_hash_table (info)->dlt_rel_sec = s;
1425
3496cb2a
L
1426 s = bfd_make_section_with_flags (abfd, ".rela.plt",
1427 (SEC_ALLOC | SEC_LOAD
1428 | SEC_HAS_CONTENTS
1429 | SEC_IN_MEMORY
1430 | SEC_READONLY
1431 | SEC_LINKER_CREATED));
15bda425 1432 if (s == NULL
15bda425 1433 || !bfd_set_section_alignment (abfd, s, 3))
b34976b6 1434 return FALSE;
15bda425
JL
1435 elf64_hppa_hash_table (info)->plt_rel_sec = s;
1436
3496cb2a
L
1437 s = bfd_make_section_with_flags (abfd, ".rela.data",
1438 (SEC_ALLOC | SEC_LOAD
1439 | SEC_HAS_CONTENTS
1440 | SEC_IN_MEMORY
1441 | SEC_READONLY
1442 | SEC_LINKER_CREATED));
15bda425 1443 if (s == NULL
15bda425 1444 || !bfd_set_section_alignment (abfd, s, 3))
b34976b6 1445 return FALSE;
15bda425
JL
1446 elf64_hppa_hash_table (info)->other_rel_sec = s;
1447
3496cb2a
L
1448 s = bfd_make_section_with_flags (abfd, ".rela.opd",
1449 (SEC_ALLOC | SEC_LOAD
1450 | SEC_HAS_CONTENTS
1451 | SEC_IN_MEMORY
1452 | SEC_READONLY
1453 | SEC_LINKER_CREATED));
15bda425 1454 if (s == NULL
15bda425 1455 || !bfd_set_section_alignment (abfd, s, 3))
b34976b6 1456 return FALSE;
15bda425
JL
1457 elf64_hppa_hash_table (info)->opd_rel_sec = s;
1458
b34976b6 1459 return TRUE;
15bda425
JL
1460}
1461
1462/* Allocate dynamic relocations for those symbols that turned out
1463 to be dynamic. */
1464
b34976b6 1465static bfd_boolean
15bda425
JL
1466allocate_dynrel_entries (dyn_h, data)
1467 struct elf64_hppa_dyn_hash_entry *dyn_h;
1468 PTR data;
1469{
1470 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1471 struct elf64_hppa_link_hash_table *hppa_info;
1472 struct elf64_hppa_dyn_reloc_entry *rent;
b34976b6 1473 bfd_boolean dynamic_symbol, shared;
15bda425
JL
1474
1475 hppa_info = elf64_hppa_hash_table (x->info);
1476 dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info);
1477 shared = x->info->shared;
1478
1479 /* We may need to allocate relocations for a non-dynamic symbol
1480 when creating a shared library. */
1481 if (!dynamic_symbol && !shared)
b34976b6 1482 return TRUE;
15bda425
JL
1483
1484 /* Take care of the normal data relocations. */
1485
1486 for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
1487 {
d663e1cd
JL
1488 /* Allocate one iff we are building a shared library, the relocation
1489 isn't a R_PARISC_FPTR64, or we don't want an opd entry. */
1490 if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
1491 continue;
1492
eea6121a 1493 hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela);
15bda425
JL
1494
1495 /* Make sure this symbol gets into the dynamic symbol table if it is
1496 not already recorded. ?!? This should not be in the loop since
1497 the symbol need only be added once. */
47b7c2db
AM
1498 if (dyn_h->h == 0
1499 || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI))
c152c796 1500 if (!bfd_elf_link_record_local_dynamic_symbol
15bda425 1501 (x->info, rent->sec->owner, dyn_h->sym_indx))
b34976b6 1502 return FALSE;
15bda425
JL
1503 }
1504
1505 /* Take care of the GOT and PLT relocations. */
1506
1507 if ((dynamic_symbol || shared) && dyn_h->want_dlt)
eea6121a 1508 hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela);
15bda425
JL
1509
1510 /* If we are building a shared library, then every symbol that has an
1511 opd entry will need an EPLT relocation to relocate the symbol's address
1512 and __gp value based on the runtime load address. */
1513 if (shared && dyn_h->want_opd)
eea6121a 1514 hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela);
15bda425
JL
1515
1516 if (dyn_h->want_plt && dynamic_symbol)
1517 {
1518 bfd_size_type t = 0;
1519
1520 /* Dynamic symbols get one IPLT relocation. Local symbols in
1521 shared libraries get two REL relocations. Local symbols in
1522 main applications get nothing. */
1523 if (dynamic_symbol)
1524 t = sizeof (Elf64_External_Rela);
1525 else if (shared)
1526 t = 2 * sizeof (Elf64_External_Rela);
1527
eea6121a 1528 hppa_info->plt_rel_sec->size += t;
15bda425
JL
1529 }
1530
b34976b6 1531 return TRUE;
15bda425
JL
1532}
1533
1534/* Adjust a symbol defined by a dynamic object and referenced by a
1535 regular object. */
1536
b34976b6 1537static bfd_boolean
15bda425 1538elf64_hppa_adjust_dynamic_symbol (info, h)
edd21aca 1539 struct bfd_link_info *info ATTRIBUTE_UNUSED;
15bda425
JL
1540 struct elf_link_hash_entry *h;
1541{
1542 /* ??? Undefined symbols with PLT entries should be re-defined
1543 to be the PLT entry. */
1544
1545 /* If this is a weak symbol, and there is a real definition, the
1546 processor independent code will have arranged for us to see the
1547 real definition first, and we can just use the same value. */
f6e332e6 1548 if (h->u.weakdef != NULL)
15bda425 1549 {
f6e332e6
AM
1550 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1551 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1552 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1553 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 1554 return TRUE;
15bda425
JL
1555 }
1556
1557 /* If this is a reference to a symbol defined by a dynamic object which
1558 is not a function, we might allocate the symbol in our .dynbss section
1559 and allocate a COPY dynamic relocation.
1560
1561 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1562 of hackery. */
1563
b34976b6 1564 return TRUE;
15bda425
JL
1565}
1566
47b7c2db
AM
1567/* This function is called via elf_link_hash_traverse to mark millicode
1568 symbols with a dynindx of -1 and to remove the string table reference
1569 from the dynamic symbol table. If the symbol is not a millicode symbol,
1570 elf64_hppa_mark_exported_functions is called. */
1571
b34976b6 1572static bfd_boolean
47b7c2db
AM
1573elf64_hppa_mark_milli_and_exported_functions (h, data)
1574 struct elf_link_hash_entry *h;
1575 PTR data;
1576{
1577 struct bfd_link_info *info = (struct bfd_link_info *)data;
1578 struct elf_link_hash_entry *elf = h;
1579
1580 if (elf->root.type == bfd_link_hash_warning)
1581 elf = (struct elf_link_hash_entry *) elf->root.u.i.link;
1582
1583 if (elf->type == STT_PARISC_MILLI)
1584 {
1585 if (elf->dynindx != -1)
1586 {
1587 elf->dynindx = -1;
1588 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1589 elf->dynstr_index);
1590 }
b34976b6 1591 return TRUE;
47b7c2db
AM
1592 }
1593
1594 return elf64_hppa_mark_exported_functions (h, data);
1595}
1596
15bda425
JL
1597/* Set the final sizes of the dynamic sections and allocate memory for
1598 the contents of our special sections. */
1599
b34976b6 1600static bfd_boolean
15bda425
JL
1601elf64_hppa_size_dynamic_sections (output_bfd, info)
1602 bfd *output_bfd;
1603 struct bfd_link_info *info;
1604{
1605 bfd *dynobj;
1606 asection *s;
b34976b6
AM
1607 bfd_boolean plt;
1608 bfd_boolean relocs;
1609 bfd_boolean reltext;
15bda425
JL
1610 struct elf64_hppa_allocate_data data;
1611 struct elf64_hppa_link_hash_table *hppa_info;
1612
1613 hppa_info = elf64_hppa_hash_table (info);
1614
1615 dynobj = elf_hash_table (info)->dynobj;
1616 BFD_ASSERT (dynobj != NULL);
1617
47b7c2db
AM
1618 /* Mark each function this program exports so that we will allocate
1619 space in the .opd section for each function's FPTR. If we are
1620 creating dynamic sections, change the dynamic index of millicode
1621 symbols to -1 and remove them from the string table for .dynstr.
1622
1623 We have to traverse the main linker hash table since we have to
1624 find functions which may not have been mentioned in any relocs. */
1625 elf_link_hash_traverse (elf_hash_table (info),
1626 (elf_hash_table (info)->dynamic_sections_created
1627 ? elf64_hppa_mark_milli_and_exported_functions
1628 : elf64_hppa_mark_exported_functions),
1629 info);
1630
15bda425
JL
1631 if (elf_hash_table (info)->dynamic_sections_created)
1632 {
1633 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 1634 if (info->executable)
15bda425
JL
1635 {
1636 s = bfd_get_section_by_name (dynobj, ".interp");
1637 BFD_ASSERT (s != NULL);
eea6121a 1638 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
15bda425
JL
1639 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1640 }
1641 }
1642 else
1643 {
1644 /* We may have created entries in the .rela.got section.
1645 However, if we are not creating the dynamic sections, we will
1646 not actually use these entries. Reset the size of .rela.dlt,
1647 which will cause it to get stripped from the output file
1648 below. */
1649 s = bfd_get_section_by_name (dynobj, ".rela.dlt");
1650 if (s != NULL)
eea6121a 1651 s->size = 0;
15bda425
JL
1652 }
1653
1654 /* Allocate the GOT entries. */
1655
1656 data.info = info;
1657 if (elf64_hppa_hash_table (info)->dlt_sec)
1658 {
1659 data.ofs = 0x0;
1660 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1661 allocate_global_data_dlt, &data);
eea6121a 1662 hppa_info->dlt_sec->size = data.ofs;
15bda425
JL
1663
1664 data.ofs = 0x0;
1665 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1666 allocate_global_data_plt, &data);
eea6121a 1667 hppa_info->plt_sec->size = data.ofs;
15bda425
JL
1668
1669 data.ofs = 0x0;
1670 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1671 allocate_global_data_stub, &data);
eea6121a 1672 hppa_info->stub_sec->size = data.ofs;
15bda425
JL
1673 }
1674
15bda425
JL
1675 /* Allocate space for entries in the .opd section. */
1676 if (elf64_hppa_hash_table (info)->opd_sec)
1677 {
1678 data.ofs = 0;
1679 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1680 allocate_global_data_opd, &data);
eea6121a 1681 hppa_info->opd_sec->size = data.ofs;
15bda425
JL
1682 }
1683
1684 /* Now allocate space for dynamic relocations, if necessary. */
1685 if (hppa_info->root.dynamic_sections_created)
1686 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1687 allocate_dynrel_entries, &data);
1688
1689 /* The sizes of all the sections are set. Allocate memory for them. */
b34976b6
AM
1690 plt = FALSE;
1691 relocs = FALSE;
1692 reltext = FALSE;
15bda425
JL
1693 for (s = dynobj->sections; s != NULL; s = s->next)
1694 {
1695 const char *name;
15bda425
JL
1696
1697 if ((s->flags & SEC_LINKER_CREATED) == 0)
1698 continue;
1699
1700 /* It's OK to base decisions on the section name, because none
1701 of the dynobj section names depend upon the input files. */
1702 name = bfd_get_section_name (dynobj, s);
1703
15bda425
JL
1704 if (strcmp (name, ".plt") == 0)
1705 {
c456f082
AM
1706 /* Remember whether there is a PLT. */
1707 plt = s->size != 0;
15bda425 1708 }
c456f082 1709 else if (strcmp (name, ".opd") == 0
0112cd26 1710 || CONST_STRNEQ (name, ".dlt")
c456f082
AM
1711 || strcmp (name, ".stub") == 0
1712 || strcmp (name, ".got") == 0)
15bda425 1713 {
d663e1cd 1714 /* Strip this section if we don't need it; see the comment below. */
15bda425 1715 }
0112cd26 1716 else if (CONST_STRNEQ (name, ".rela"))
15bda425 1717 {
c456f082 1718 if (s->size != 0)
15bda425
JL
1719 {
1720 asection *target;
1721
1722 /* Remember whether there are any reloc sections other
1723 than .rela.plt. */
1724 if (strcmp (name, ".rela.plt") != 0)
1725 {
1726 const char *outname;
1727
b34976b6 1728 relocs = TRUE;
15bda425
JL
1729
1730 /* If this relocation section applies to a read only
1731 section, then we probably need a DT_TEXTREL
1732 entry. The entries in the .rela.plt section
1733 really apply to the .got section, which we
1734 created ourselves and so know is not readonly. */
1735 outname = bfd_get_section_name (output_bfd,
1736 s->output_section);
1737 target = bfd_get_section_by_name (output_bfd, outname + 4);
1738 if (target != NULL
1739 && (target->flags & SEC_READONLY) != 0
1740 && (target->flags & SEC_ALLOC) != 0)
b34976b6 1741 reltext = TRUE;
15bda425
JL
1742 }
1743
1744 /* We use the reloc_count field as a counter if we need
1745 to copy relocs into the output file. */
1746 s->reloc_count = 0;
1747 }
1748 }
c456f082 1749 else
15bda425
JL
1750 {
1751 /* It's not one of our sections, so don't allocate space. */
1752 continue;
1753 }
1754
c456f082 1755 if (s->size == 0)
15bda425 1756 {
c456f082
AM
1757 /* If we don't need this section, strip it from the
1758 output file. This is mostly to handle .rela.bss and
1759 .rela.plt. We must create both sections in
1760 create_dynamic_sections, because they must be created
1761 before the linker maps input sections to output
1762 sections. The linker does that before
1763 adjust_dynamic_symbol is called, and it is that
1764 function which decides whether anything needs to go
1765 into these sections. */
8423293d 1766 s->flags |= SEC_EXCLUDE;
15bda425
JL
1767 continue;
1768 }
1769
c456f082
AM
1770 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1771 continue;
1772
15bda425 1773 /* Allocate memory for the section contents if it has not
832d951b
AM
1774 been allocated already. We use bfd_zalloc here in case
1775 unused entries are not reclaimed before the section's
1776 contents are written out. This should not happen, but this
1777 way if it does, we get a R_PARISC_NONE reloc instead of
1778 garbage. */
15bda425
JL
1779 if (s->contents == NULL)
1780 {
eea6121a 1781 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 1782 if (s->contents == NULL)
b34976b6 1783 return FALSE;
15bda425
JL
1784 }
1785 }
1786
1787 if (elf_hash_table (info)->dynamic_sections_created)
1788 {
1789 /* Always create a DT_PLTGOT. It actually has nothing to do with
1790 the PLT, it is how we communicate the __gp value of a load
1791 module to the dynamic linker. */
dc810e39 1792#define add_dynamic_entry(TAG, VAL) \
5a580b3a 1793 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39
AM
1794
1795 if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0)
1796 || !add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 1797 return FALSE;
15bda425
JL
1798
1799 /* Add some entries to the .dynamic section. We fill in the
1800 values later, in elf64_hppa_finish_dynamic_sections, but we
1801 must add the entries now so that we get the correct size for
1802 the .dynamic section. The DT_DEBUG entry is filled in by the
1803 dynamic linker and used by the debugger. */
1804 if (! info->shared)
1805 {
dc810e39
AM
1806 if (!add_dynamic_entry (DT_DEBUG, 0)
1807 || !add_dynamic_entry (DT_HP_DLD_HOOK, 0)
1808 || !add_dynamic_entry (DT_HP_LOAD_MAP, 0))
b34976b6 1809 return FALSE;
15bda425
JL
1810 }
1811
f2482cb2
NC
1812 /* Force DT_FLAGS to always be set.
1813 Required by HPUX 11.00 patch PHSS_26559. */
1814 if (!add_dynamic_entry (DT_FLAGS, (info)->flags))
b34976b6 1815 return FALSE;
f2482cb2 1816
15bda425
JL
1817 if (plt)
1818 {
dc810e39
AM
1819 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
1820 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1821 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 1822 return FALSE;
15bda425
JL
1823 }
1824
1825 if (relocs)
1826 {
dc810e39
AM
1827 if (!add_dynamic_entry (DT_RELA, 0)
1828 || !add_dynamic_entry (DT_RELASZ, 0)
1829 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 1830 return FALSE;
15bda425
JL
1831 }
1832
1833 if (reltext)
1834 {
dc810e39 1835 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 1836 return FALSE;
d6cf2879 1837 info->flags |= DF_TEXTREL;
15bda425
JL
1838 }
1839 }
dc810e39 1840#undef add_dynamic_entry
15bda425 1841
b34976b6 1842 return TRUE;
15bda425
JL
1843}
1844
1845/* Called after we have output the symbol into the dynamic symbol
1846 table, but before we output the symbol into the normal symbol
1847 table.
1848
1849 For some symbols we had to change their address when outputting
1850 the dynamic symbol table. We undo that change here so that
1851 the symbols have their expected value in the normal symbol
1852 table. Ick. */
1853
b34976b6 1854static bfd_boolean
754021d0 1855elf64_hppa_link_output_symbol_hook (info, name, sym, input_sec, h)
15bda425
JL
1856 struct bfd_link_info *info;
1857 const char *name;
1858 Elf_Internal_Sym *sym;
edd21aca 1859 asection *input_sec ATTRIBUTE_UNUSED;
754021d0 1860 struct elf_link_hash_entry *h;
15bda425
JL
1861{
1862 struct elf64_hppa_link_hash_table *hppa_info;
1863 struct elf64_hppa_dyn_hash_entry *dyn_h;
1864
1865 /* We may be called with the file symbol or section symbols.
1866 They never need munging, so it is safe to ignore them. */
1867 if (!name)
b34976b6 1868 return TRUE;
15bda425
JL
1869
1870 /* Get the PA dyn_symbol (if any) associated with NAME. */
1871 hppa_info = elf64_hppa_hash_table (info);
1872 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
b34976b6 1873 name, FALSE, FALSE);
ac7bbf74 1874 if (!dyn_h || dyn_h->h != h)
754021d0 1875 return TRUE;
15bda425 1876
832d951b
AM
1877 /* Function symbols for which we created .opd entries *may* have been
1878 munged by finish_dynamic_symbol and have to be un-munged here.
1879
1880 Note that finish_dynamic_symbol sometimes turns dynamic symbols
1881 into non-dynamic ones, so we initialize st_shndx to -1 in
1882 mark_exported_functions and check to see if it was overwritten
1883 here instead of just checking dyn_h->h->dynindx. */
ac7bbf74 1884 if (dyn_h->want_opd && dyn_h->st_shndx != -1)
15bda425
JL
1885 {
1886 /* Restore the saved value and section index. */
1887 sym->st_value = dyn_h->st_value;
fe8bc63d 1888 sym->st_shndx = dyn_h->st_shndx;
15bda425
JL
1889 }
1890
b34976b6 1891 return TRUE;
15bda425
JL
1892}
1893
1894/* Finish up dynamic symbol handling. We set the contents of various
1895 dynamic sections here. */
1896
b34976b6 1897static bfd_boolean
15bda425
JL
1898elf64_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
1899 bfd *output_bfd;
1900 struct bfd_link_info *info;
1901 struct elf_link_hash_entry *h;
1902 Elf_Internal_Sym *sym;
1903{
1904 asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel;
1905 struct elf64_hppa_link_hash_table *hppa_info;
1906 struct elf64_hppa_dyn_hash_entry *dyn_h;
1907
1908 hppa_info = elf64_hppa_hash_table (info);
1909 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
b34976b6 1910 h->root.root.string, FALSE, FALSE);
15bda425
JL
1911
1912 stub = hppa_info->stub_sec;
1913 splt = hppa_info->plt_sec;
1914 sdlt = hppa_info->dlt_sec;
1915 sopd = hppa_info->opd_sec;
1916 spltrel = hppa_info->plt_rel_sec;
1917 sdltrel = hppa_info->dlt_rel_sec;
1918
15bda425
JL
1919 /* Incredible. It is actually necessary to NOT use the symbol's real
1920 value when building the dynamic symbol table for a shared library.
1921 At least for symbols that refer to functions.
1922
1923 We will store a new value and section index into the symbol long
1924 enough to output it into the dynamic symbol table, then we restore
1925 the original values (in elf64_hppa_link_output_symbol_hook). */
1926 if (dyn_h && dyn_h->want_opd)
1927 {
f12123c0 1928 BFD_ASSERT (sopd != NULL);
d663e1cd 1929
15bda425
JL
1930 /* Save away the original value and section index so that we
1931 can restore them later. */
1932 dyn_h->st_value = sym->st_value;
1933 dyn_h->st_shndx = sym->st_shndx;
1934
1935 /* For the dynamic symbol table entry, we want the value to be
1936 address of this symbol's entry within the .opd section. */
1937 sym->st_value = (dyn_h->opd_offset
1938 + sopd->output_offset
1939 + sopd->output_section->vma);
1940 sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
1941 sopd->output_section);
1942 }
1943
1944 /* Initialize a .plt entry if requested. */
1945 if (dyn_h && dyn_h->want_plt
1946 && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
1947 {
1948 bfd_vma value;
1949 Elf_Internal_Rela rel;
947216bf 1950 bfd_byte *loc;
15bda425 1951
f12123c0 1952 BFD_ASSERT (splt != NULL && spltrel != NULL);
d663e1cd 1953
15bda425
JL
1954 /* We do not actually care about the value in the PLT entry
1955 if we are creating a shared library and the symbol is
1956 still undefined, we create a dynamic relocation to fill
1957 in the correct value. */
1958 if (info->shared && h->root.type == bfd_link_hash_undefined)
1959 value = 0;
1960 else
1961 value = (h->root.u.def.value + h->root.u.def.section->vma);
1962
fe8bc63d 1963 /* Fill in the entry in the procedure linkage table.
15bda425
JL
1964
1965 The format of a plt entry is
fe8bc63d 1966 <funcaddr> <__gp>.
15bda425
JL
1967
1968 plt_offset is the offset within the PLT section at which to
fe8bc63d 1969 install the PLT entry.
15bda425
JL
1970
1971 We are modifying the in-memory PLT contents here, so we do not add
1972 in the output_offset of the PLT section. */
1973
1974 bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset);
1975 value = _bfd_get_gp_value (splt->output_section->owner);
1976 bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8);
1977
1978 /* Create a dynamic IPLT relocation for this entry.
1979
1980 We are creating a relocation in the output file's PLT section,
1981 which is included within the DLT secton. So we do need to include
1982 the PLT's output_offset in the computation of the relocation's
1983 address. */
1984 rel.r_offset = (dyn_h->plt_offset + splt->output_offset
1985 + splt->output_section->vma);
1986 rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT);
1987 rel.r_addend = 0;
1988
947216bf
AM
1989 loc = spltrel->contents;
1990 loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela);
1991 bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc);
15bda425
JL
1992 }
1993
1994 /* Initialize an external call stub entry if requested. */
1995 if (dyn_h && dyn_h->want_stub
1996 && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
1997 {
1998 bfd_vma value;
1999 int insn;
b352eebf 2000 unsigned int max_offset;
15bda425 2001
f12123c0 2002 BFD_ASSERT (stub != NULL);
d663e1cd 2003
15bda425
JL
2004 /* Install the generic stub template.
2005
2006 We are modifying the contents of the stub section, so we do not
2007 need to include the stub section's output_offset here. */
2008 memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub));
2009
2010 /* Fix up the first ldd instruction.
2011
2012 We are modifying the contents of the STUB section in memory,
fe8bc63d 2013 so we do not need to include its output offset in this computation.
15bda425
JL
2014
2015 Note the plt_offset value is the value of the PLT entry relative to
2016 the start of the PLT section. These instructions will reference
2017 data relative to the value of __gp, which may not necessarily have
2018 the same address as the start of the PLT section.
2019
2020 gp_offset contains the offset of __gp within the PLT section. */
2021 value = dyn_h->plt_offset - hppa_info->gp_offset;
fe8bc63d 2022
15bda425 2023 insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset);
b352eebf
AM
2024 if (output_bfd->arch_info->mach >= 25)
2025 {
2026 /* Wide mode allows 16 bit offsets. */
2027 max_offset = 32768;
2028 insn &= ~ 0xfff1;
dc810e39 2029 insn |= re_assemble_16 ((int) value);
b352eebf
AM
2030 }
2031 else
2032 {
2033 max_offset = 8192;
2034 insn &= ~ 0x3ff1;
dc810e39 2035 insn |= re_assemble_14 ((int) value);
b352eebf
AM
2036 }
2037
2038 if ((value & 7) || value + max_offset >= 2*max_offset - 8)
2039 {
2040 (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"),
2041 dyn_h->root.string,
2042 (long) value);
b34976b6 2043 return FALSE;
b352eebf
AM
2044 }
2045
dc810e39 2046 bfd_put_32 (stub->owner, (bfd_vma) insn,
15bda425
JL
2047 stub->contents + dyn_h->stub_offset);
2048
2049 /* Fix up the second ldd instruction. */
b352eebf 2050 value += 8;
15bda425 2051 insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8);
b352eebf
AM
2052 if (output_bfd->arch_info->mach >= 25)
2053 {
2054 insn &= ~ 0xfff1;
dc810e39 2055 insn |= re_assemble_16 ((int) value);
b352eebf
AM
2056 }
2057 else
2058 {
2059 insn &= ~ 0x3ff1;
dc810e39 2060 insn |= re_assemble_14 ((int) value);
b352eebf 2061 }
dc810e39 2062 bfd_put_32 (stub->owner, (bfd_vma) insn,
15bda425
JL
2063 stub->contents + dyn_h->stub_offset + 8);
2064 }
2065
b34976b6 2066 return TRUE;
15bda425
JL
2067}
2068
2069/* The .opd section contains FPTRs for each function this file
2070 exports. Initialize the FPTR entries. */
2071
b34976b6 2072static bfd_boolean
15bda425
JL
2073elf64_hppa_finalize_opd (dyn_h, data)
2074 struct elf64_hppa_dyn_hash_entry *dyn_h;
2075 PTR data;
2076{
2077 struct bfd_link_info *info = (struct bfd_link_info *)data;
2078 struct elf64_hppa_link_hash_table *hppa_info;
3db4b612 2079 struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL;
15bda425
JL
2080 asection *sopd;
2081 asection *sopdrel;
2082
2083 hppa_info = elf64_hppa_hash_table (info);
2084 sopd = hppa_info->opd_sec;
2085 sopdrel = hppa_info->opd_rel_sec;
2086
3db4b612 2087 if (h && dyn_h->want_opd)
15bda425
JL
2088 {
2089 bfd_vma value;
2090
fe8bc63d 2091 /* The first two words of an .opd entry are zero.
15bda425
JL
2092
2093 We are modifying the contents of the OPD section in memory, so we
2094 do not need to include its output offset in this computation. */
2095 memset (sopd->contents + dyn_h->opd_offset, 0, 16);
2096
2097 value = (h->root.u.def.value
2098 + h->root.u.def.section->output_section->vma
2099 + h->root.u.def.section->output_offset);
2100
2101 /* The next word is the address of the function. */
2102 bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16);
2103
2104 /* The last word is our local __gp value. */
2105 value = _bfd_get_gp_value (sopd->output_section->owner);
2106 bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24);
2107 }
2108
2109 /* If we are generating a shared library, we must generate EPLT relocations
2110 for each entry in the .opd, even for static functions (they may have
2111 had their address taken). */
2112 if (info->shared && dyn_h && dyn_h->want_opd)
2113 {
947216bf
AM
2114 Elf_Internal_Rela rel;
2115 bfd_byte *loc;
15bda425
JL
2116 int dynindx;
2117
2118 /* We may need to do a relocation against a local symbol, in
2119 which case we have to look up it's dynamic symbol index off
2120 the local symbol hash table. */
2121 if (h && h->dynindx != -1)
2122 dynindx = h->dynindx;
2123 else
2124 dynindx
2125 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2126 dyn_h->sym_indx);
2127
2128 /* The offset of this relocation is the absolute address of the
2129 .opd entry for this symbol. */
2130 rel.r_offset = (dyn_h->opd_offset + sopd->output_offset
2131 + sopd->output_section->vma);
2132
2133 /* If H is non-null, then we have an external symbol.
2134
2135 It is imperative that we use a different dynamic symbol for the
2136 EPLT relocation if the symbol has global scope.
2137
2138 In the dynamic symbol table, the function symbol will have a value
2139 which is address of the function's .opd entry.
2140
2141 Thus, we can not use that dynamic symbol for the EPLT relocation
2142 (if we did, the data in the .opd would reference itself rather
2143 than the actual address of the function). Instead we have to use
2144 a new dynamic symbol which has the same value as the original global
fe8bc63d 2145 function symbol.
15bda425
JL
2146
2147 We prefix the original symbol with a "." and use the new symbol in
2148 the EPLT relocation. This new symbol has already been recorded in
2149 the symbol table, we just have to look it up and use it.
2150
2151 We do not have such problems with static functions because we do
2152 not make their addresses in the dynamic symbol table point to
2153 the .opd entry. Ultimately this should be safe since a static
2154 function can not be directly referenced outside of its shared
2155 library.
2156
2157 We do have to play similar games for FPTR relocations in shared
2158 libraries, including those for static symbols. See the FPTR
2159 handling in elf64_hppa_finalize_dynreloc. */
2160 if (h)
2161 {
2162 char *new_name;
2163 struct elf_link_hash_entry *nh;
2164
2165 new_name = alloca (strlen (h->root.root.string) + 2);
2166 new_name[0] = '.';
2167 strcpy (new_name + 1, h->root.root.string);
2168
2169 nh = elf_link_hash_lookup (elf_hash_table (info),
b34976b6 2170 new_name, FALSE, FALSE, FALSE);
15bda425
JL
2171
2172 /* All we really want from the new symbol is its dynamic
2173 symbol index. */
2174 dynindx = nh->dynindx;
2175 }
2176
2177 rel.r_addend = 0;
2178 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT);
2179
947216bf
AM
2180 loc = sopdrel->contents;
2181 loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela);
2182 bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc);
15bda425 2183 }
b34976b6 2184 return TRUE;
15bda425
JL
2185}
2186
2187/* The .dlt section contains addresses for items referenced through the
2188 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2189 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2190
b34976b6 2191static bfd_boolean
15bda425
JL
2192elf64_hppa_finalize_dlt (dyn_h, data)
2193 struct elf64_hppa_dyn_hash_entry *dyn_h;
2194 PTR data;
2195{
2196 struct bfd_link_info *info = (struct bfd_link_info *)data;
2197 struct elf64_hppa_link_hash_table *hppa_info;
2198 asection *sdlt, *sdltrel;
3db4b612 2199 struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL;
15bda425
JL
2200
2201 hppa_info = elf64_hppa_hash_table (info);
2202
2203 sdlt = hppa_info->dlt_sec;
2204 sdltrel = hppa_info->dlt_rel_sec;
2205
2206 /* H/DYN_H may refer to a local variable and we know it's
2207 address, so there is no need to create a relocation. Just install
2208 the proper value into the DLT, note this shortcut can not be
2209 skipped when building a shared library. */
3db4b612 2210 if (! info->shared && h && dyn_h->want_dlt)
15bda425
JL
2211 {
2212 bfd_vma value;
2213
2214 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
fe8bc63d 2215 to point to the FPTR entry in the .opd section.
15bda425
JL
2216
2217 We include the OPD's output offset in this computation as
2218 we are referring to an absolute address in the resulting
2219 object file. */
2220 if (dyn_h->want_opd)
2221 {
2222 value = (dyn_h->opd_offset
2223 + hppa_info->opd_sec->output_offset
2224 + hppa_info->opd_sec->output_section->vma);
2225 }
37f4508b
AM
2226 else if ((h->root.type == bfd_link_hash_defined
2227 || h->root.type == bfd_link_hash_defweak)
2228 && h->root.u.def.section)
15bda425 2229 {
3db4b612 2230 value = h->root.u.def.value + h->root.u.def.section->output_offset;
15bda425
JL
2231 if (h->root.u.def.section->output_section)
2232 value += h->root.u.def.section->output_section->vma;
2233 else
2234 value += h->root.u.def.section->vma;
2235 }
3db4b612
JL
2236 else
2237 /* We have an undefined function reference. */
2238 value = 0;
15bda425
JL
2239
2240 /* We do not need to include the output offset of the DLT section
2241 here because we are modifying the in-memory contents. */
2242 bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset);
2243 }
2244
4cc11e76 2245 /* Create a relocation for the DLT entry associated with this symbol.
15bda425
JL
2246 When building a shared library the symbol does not have to be dynamic. */
2247 if (dyn_h->want_dlt
2248 && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared))
2249 {
947216bf
AM
2250 Elf_Internal_Rela rel;
2251 bfd_byte *loc;
15bda425
JL
2252 int dynindx;
2253
2254 /* We may need to do a relocation against a local symbol, in
2255 which case we have to look up it's dynamic symbol index off
2256 the local symbol hash table. */
2257 if (h && h->dynindx != -1)
2258 dynindx = h->dynindx;
2259 else
2260 dynindx
2261 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2262 dyn_h->sym_indx);
2263
15bda425
JL
2264 /* Create a dynamic relocation for this entry. Do include the output
2265 offset of the DLT entry since we need an absolute address in the
2266 resulting object file. */
2267 rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset
2268 + sdlt->output_section->vma);
2269 if (h && h->type == STT_FUNC)
2270 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64);
2271 else
2272 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64);
2273 rel.r_addend = 0;
2274
947216bf
AM
2275 loc = sdltrel->contents;
2276 loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela);
2277 bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc);
15bda425 2278 }
b34976b6 2279 return TRUE;
15bda425
JL
2280}
2281
2282/* Finalize the dynamic relocations. Specifically the FPTR relocations
2283 for dynamic functions used to initialize static data. */
2284
b34976b6 2285static bfd_boolean
15bda425
JL
2286elf64_hppa_finalize_dynreloc (dyn_h, data)
2287 struct elf64_hppa_dyn_hash_entry *dyn_h;
2288 PTR data;
2289{
2290 struct bfd_link_info *info = (struct bfd_link_info *)data;
2291 struct elf64_hppa_link_hash_table *hppa_info;
2292 struct elf_link_hash_entry *h;
2293 int dynamic_symbol;
2294
2295 dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info);
2296
2297 if (!dynamic_symbol && !info->shared)
b34976b6 2298 return TRUE;
15bda425
JL
2299
2300 if (dyn_h->reloc_entries)
2301 {
2302 struct elf64_hppa_dyn_reloc_entry *rent;
2303 int dynindx;
2304
2305 hppa_info = elf64_hppa_hash_table (info);
2306 h = dyn_h->h;
2307
2308 /* We may need to do a relocation against a local symbol, in
2309 which case we have to look up it's dynamic symbol index off
2310 the local symbol hash table. */
2311 if (h && h->dynindx != -1)
2312 dynindx = h->dynindx;
2313 else
2314 dynindx
2315 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2316 dyn_h->sym_indx);
2317
2318 for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
2319 {
947216bf
AM
2320 Elf_Internal_Rela rel;
2321 bfd_byte *loc;
15bda425 2322
d663e1cd
JL
2323 /* Allocate one iff we are building a shared library, the relocation
2324 isn't a R_PARISC_FPTR64, or we don't want an opd entry. */
2325 if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
2326 continue;
15bda425 2327
fe8bc63d 2328 /* Create a dynamic relocation for this entry.
15bda425
JL
2329
2330 We need the output offset for the reloc's section because
2331 we are creating an absolute address in the resulting object
2332 file. */
2333 rel.r_offset = (rent->offset + rent->sec->output_offset
2334 + rent->sec->output_section->vma);
2335
2336 /* An FPTR64 relocation implies that we took the address of
2337 a function and that the function has an entry in the .opd
2338 section. We want the FPTR64 relocation to reference the
2339 entry in .opd.
2340
2341 We could munge the symbol value in the dynamic symbol table
2342 (in fact we already do for functions with global scope) to point
2343 to the .opd entry. Then we could use that dynamic symbol in
2344 this relocation.
2345
2346 Or we could do something sensible, not munge the symbol's
2347 address and instead just use a different symbol to reference
2348 the .opd entry. At least that seems sensible until you
2349 realize there's no local dynamic symbols we can use for that
2350 purpose. Thus the hair in the check_relocs routine.
fe8bc63d 2351
15bda425
JL
2352 We use a section symbol recorded by check_relocs as the
2353 base symbol for the relocation. The addend is the difference
2354 between the section symbol and the address of the .opd entry. */
3db4b612 2355 if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
15bda425
JL
2356 {
2357 bfd_vma value, value2;
15bda425
JL
2358
2359 /* First compute the address of the opd entry for this symbol. */
2360 value = (dyn_h->opd_offset
2361 + hppa_info->opd_sec->output_section->vma
2362 + hppa_info->opd_sec->output_offset);
2363
2364 /* Compute the value of the start of the section with
2365 the relocation. */
2366 value2 = (rent->sec->output_section->vma
2367 + rent->sec->output_offset);
2368
2369 /* Compute the difference between the start of the section
2370 with the relocation and the opd entry. */
2371 value -= value2;
fe8bc63d 2372
15bda425
JL
2373 /* The result becomes the addend of the relocation. */
2374 rel.r_addend = value;
2375
2376 /* The section symbol becomes the symbol for the dynamic
2377 relocation. */
2378 dynindx
2379 = _bfd_elf_link_lookup_local_dynindx (info,
2380 rent->sec->owner,
2381 rent->sec_symndx);
2382 }
2383 else
2384 rel.r_addend = rent->addend;
2385
2386 rel.r_info = ELF64_R_INFO (dynindx, rent->type);
2387
947216bf
AM
2388 loc = hppa_info->other_rel_sec->contents;
2389 loc += (hppa_info->other_rel_sec->reloc_count++
2390 * sizeof (Elf64_External_Rela));
15bda425 2391 bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner,
947216bf 2392 &rel, loc);
15bda425
JL
2393 }
2394 }
2395
b34976b6 2396 return TRUE;
15bda425
JL
2397}
2398
5ac81c74
JL
2399/* Used to decide how to sort relocs in an optimal manner for the
2400 dynamic linker, before writing them out. */
2401
2402static enum elf_reloc_type_class
2403elf64_hppa_reloc_type_class (rela)
2404 const Elf_Internal_Rela *rela;
2405{
2406 if (ELF64_R_SYM (rela->r_info) == 0)
2407 return reloc_class_relative;
2408
2409 switch ((int) ELF64_R_TYPE (rela->r_info))
2410 {
2411 case R_PARISC_IPLT:
2412 return reloc_class_plt;
2413 case R_PARISC_COPY:
2414 return reloc_class_copy;
2415 default:
2416 return reloc_class_normal;
2417 }
2418}
2419
15bda425
JL
2420/* Finish up the dynamic sections. */
2421
b34976b6 2422static bfd_boolean
15bda425
JL
2423elf64_hppa_finish_dynamic_sections (output_bfd, info)
2424 bfd *output_bfd;
2425 struct bfd_link_info *info;
2426{
2427 bfd *dynobj;
2428 asection *sdyn;
2429 struct elf64_hppa_link_hash_table *hppa_info;
2430
2431 hppa_info = elf64_hppa_hash_table (info);
2432
2433 /* Finalize the contents of the .opd section. */
2434 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2435 elf64_hppa_finalize_opd,
2436 info);
2437
2438 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2439 elf64_hppa_finalize_dynreloc,
2440 info);
2441
2442 /* Finalize the contents of the .dlt section. */
2443 dynobj = elf_hash_table (info)->dynobj;
2444 /* Finalize the contents of the .dlt section. */
2445 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2446 elf64_hppa_finalize_dlt,
2447 info);
2448
15bda425
JL
2449 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2450
2451 if (elf_hash_table (info)->dynamic_sections_created)
2452 {
2453 Elf64_External_Dyn *dyncon, *dynconend;
15bda425
JL
2454
2455 BFD_ASSERT (sdyn != NULL);
2456
2457 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 2458 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15bda425
JL
2459 for (; dyncon < dynconend; dyncon++)
2460 {
2461 Elf_Internal_Dyn dyn;
2462 asection *s;
2463
2464 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
2465
2466 switch (dyn.d_tag)
2467 {
2468 default:
2469 break;
2470
2471 case DT_HP_LOAD_MAP:
2472 /* Compute the absolute address of 16byte scratchpad area
2473 for the dynamic linker.
2474
2475 By convention the linker script will allocate the scratchpad
2476 area at the start of the .data section. So all we have to
2477 to is find the start of the .data section. */
2478 s = bfd_get_section_by_name (output_bfd, ".data");
2479 dyn.d_un.d_ptr = s->vma;
2480 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2481 break;
2482
2483 case DT_PLTGOT:
2484 /* HP's use PLTGOT to set the GOT register. */
2485 dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd);
2486 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2487 break;
2488
2489 case DT_JMPREL:
2490 s = hppa_info->plt_rel_sec;
2491 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
2492 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2493 break;
2494
2495 case DT_PLTRELSZ:
2496 s = hppa_info->plt_rel_sec;
eea6121a 2497 dyn.d_un.d_val = s->size;
15bda425
JL
2498 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2499 break;
2500
2501 case DT_RELA:
2502 s = hppa_info->other_rel_sec;
eea6121a 2503 if (! s || ! s->size)
15bda425 2504 s = hppa_info->dlt_rel_sec;
eea6121a 2505 if (! s || ! s->size)
5ac81c74 2506 s = hppa_info->opd_rel_sec;
15bda425
JL
2507 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
2508 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2509 break;
2510
2511 case DT_RELASZ:
2512 s = hppa_info->other_rel_sec;
eea6121a 2513 dyn.d_un.d_val = s->size;
15bda425 2514 s = hppa_info->dlt_rel_sec;
eea6121a 2515 dyn.d_un.d_val += s->size;
15bda425 2516 s = hppa_info->opd_rel_sec;
eea6121a 2517 dyn.d_un.d_val += s->size;
15bda425
JL
2518 /* There is some question about whether or not the size of
2519 the PLT relocs should be included here. HP's tools do
2520 it, so we'll emulate them. */
2521 s = hppa_info->plt_rel_sec;
eea6121a 2522 dyn.d_un.d_val += s->size;
15bda425
JL
2523 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2524 break;
2525
2526 }
2527 }
2528 }
2529
b34976b6 2530 return TRUE;
15bda425
JL
2531}
2532
235ecfbc
NC
2533/* Support for core dump NOTE sections. */
2534
2535static bfd_boolean
2536elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2537{
2538 int offset;
2539 size_t size;
2540
2541 switch (note->descsz)
2542 {
2543 default:
2544 return FALSE;
2545
2546 case 760: /* Linux/hppa */
2547 /* pr_cursig */
2548 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2549
2550 /* pr_pid */
2551 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2552
2553 /* pr_reg */
2554 offset = 112;
2555 size = 640;
2556
2557 break;
2558 }
2559
2560 /* Make a ".reg/999" section. */
2561 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2562 size, note->descpos + offset);
2563}
2564
2565static bfd_boolean
2566elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2567{
2568 char * command;
2569 int n;
2570
2571 switch (note->descsz)
2572 {
2573 default:
2574 return FALSE;
2575
2576 case 136: /* Linux/hppa elf_prpsinfo. */
2577 elf_tdata (abfd)->core_program
2578 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2579 elf_tdata (abfd)->core_command
2580 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2581 }
2582
2583 /* Note that for some reason, a spurious space is tacked
2584 onto the end of the args in some (at least one anyway)
2585 implementations, so strip it off if it exists. */
2586 command = elf_tdata (abfd)->core_command;
2587 n = strlen (command);
2588
2589 if (0 < n && command[n - 1] == ' ')
2590 command[n - 1] = '\0';
2591
2592 return TRUE;
2593}
2594
15bda425
JL
2595/* Return the number of additional phdrs we will need.
2596
2597 The generic ELF code only creates PT_PHDRs for executables. The HP
fe8bc63d 2598 dynamic linker requires PT_PHDRs for dynamic libraries too.
15bda425
JL
2599
2600 This routine indicates that the backend needs one additional program
2601 header for that case.
2602
2603 Note we do not have access to the link info structure here, so we have
2604 to guess whether or not we are building a shared library based on the
2605 existence of a .interp section. */
2606
2607static int
a6b96beb
AM
2608elf64_hppa_additional_program_headers (bfd *abfd,
2609 struct bfd_link_info *info ATTRIBUTE_UNUSED)
15bda425
JL
2610{
2611 asection *s;
2612
2613 /* If we are creating a shared library, then we have to create a
2614 PT_PHDR segment. HP's dynamic linker chokes without it. */
2615 s = bfd_get_section_by_name (abfd, ".interp");
2616 if (! s)
2617 return 1;
2618 return 0;
2619}
2620
2621/* Allocate and initialize any program headers required by this
2622 specific backend.
2623
2624 The generic ELF code only creates PT_PHDRs for executables. The HP
fe8bc63d 2625 dynamic linker requires PT_PHDRs for dynamic libraries too.
15bda425
JL
2626
2627 This allocates the PT_PHDR and initializes it in a manner suitable
fe8bc63d 2628 for the HP linker.
15bda425
JL
2629
2630 Note we do not have access to the link info structure here, so we have
2631 to guess whether or not we are building a shared library based on the
2632 existence of a .interp section. */
2633
b34976b6 2634static bfd_boolean
8ded5a0f
AM
2635elf64_hppa_modify_segment_map (bfd *abfd,
2636 struct bfd_link_info *info ATTRIBUTE_UNUSED)
15bda425 2637{
edd21aca 2638 struct elf_segment_map *m;
15bda425
JL
2639 asection *s;
2640
2641 s = bfd_get_section_by_name (abfd, ".interp");
2642 if (! s)
2643 {
2644 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2645 if (m->p_type == PT_PHDR)
2646 break;
2647 if (m == NULL)
2648 {
dc810e39
AM
2649 m = ((struct elf_segment_map *)
2650 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
15bda425 2651 if (m == NULL)
b34976b6 2652 return FALSE;
15bda425
JL
2653
2654 m->p_type = PT_PHDR;
2655 m->p_flags = PF_R | PF_X;
2656 m->p_flags_valid = 1;
2657 m->p_paddr_valid = 1;
2658 m->includes_phdrs = 1;
2659
2660 m->next = elf_tdata (abfd)->segment_map;
2661 elf_tdata (abfd)->segment_map = m;
2662 }
2663 }
2664
2665 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2666 if (m->p_type == PT_LOAD)
2667 {
0ba2a60e 2668 unsigned int i;
15bda425
JL
2669
2670 for (i = 0; i < m->count; i++)
2671 {
2672 /* The code "hint" is not really a hint. It is a requirement
2673 for certain versions of the HP dynamic linker. Worse yet,
2674 it must be set even if the shared library does not have
2675 any code in its "text" segment (thus the check for .hash
2676 to catch this situation). */
2677 if (m->sections[i]->flags & SEC_CODE
2678 || (strcmp (m->sections[i]->name, ".hash") == 0))
2679 m->p_flags |= (PF_X | PF_HP_CODE);
2680 }
2681 }
2682
b34976b6 2683 return TRUE;
15bda425
JL
2684}
2685
3fab46d0
AM
2686/* Called when writing out an object file to decide the type of a
2687 symbol. */
2688static int
2689elf64_hppa_elf_get_symbol_type (elf_sym, type)
2690 Elf_Internal_Sym *elf_sym;
2691 int type;
2692{
2693 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
2694 return STT_PARISC_MILLI;
2695 else
2696 return type;
2697}
2698
d97a8924
DA
2699/* Support HP specific sections for core files. */
2700static bfd_boolean
2701elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index,
2702 const char *typename)
2703{
927e625f
MK
2704 if (hdr->p_type == PT_HP_CORE_KERNEL)
2705 {
2706 asection *sect;
2707
2708 if (!_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename))
2709 return FALSE;
2710
2711 sect = bfd_make_section_anyway (abfd, ".kernel");
2712 if (sect == NULL)
2713 return FALSE;
2714 sect->size = hdr->p_filesz;
2715 sect->filepos = hdr->p_offset;
2716 sect->flags = SEC_HAS_CONTENTS | SEC_READONLY;
2717 return TRUE;
2718 }
2719
d97a8924
DA
2720 if (hdr->p_type == PT_HP_CORE_PROC)
2721 {
2722 int sig;
2723
2724 if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0)
2725 return FALSE;
2726 if (bfd_bread (&sig, 4, abfd) != 4)
2727 return FALSE;
2728
2729 elf_tdata (abfd)->core_signal = sig;
2730
927e625f 2731 if (!_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename))
d97a8924 2732 return FALSE;
927e625f
MK
2733
2734 /* GDB uses the ".reg" section to read register contents. */
2735 return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz,
2736 hdr->p_offset);
d97a8924
DA
2737 }
2738
2739 if (hdr->p_type == PT_HP_CORE_LOADABLE
2740 || hdr->p_type == PT_HP_CORE_STACK
2741 || hdr->p_type == PT_HP_CORE_MMF)
2742 hdr->p_type = PT_LOAD;
2743
2744 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, typename);
2745}
2746
b35d266b 2747static const struct bfd_elf_special_section elf64_hppa_special_sections[] =
2f89ff8d 2748{
0112cd26
NC
2749 { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2750 { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2751 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT },
2752 { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT },
2753 { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT },
2754 { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT },
2755 { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS },
2756 { NULL, 0, 0, 0, 0 }
2f89ff8d
L
2757};
2758
15bda425
JL
2759/* The hash bucket size is the standard one, namely 4. */
2760
2761const struct elf_size_info hppa64_elf_size_info =
2762{
2763 sizeof (Elf64_External_Ehdr),
2764 sizeof (Elf64_External_Phdr),
2765 sizeof (Elf64_External_Shdr),
2766 sizeof (Elf64_External_Rel),
2767 sizeof (Elf64_External_Rela),
2768 sizeof (Elf64_External_Sym),
2769 sizeof (Elf64_External_Dyn),
2770 sizeof (Elf_External_Note),
2771 4,
2772 1,
45d6a902 2773 64, 3,
15bda425
JL
2774 ELFCLASS64, EV_CURRENT,
2775 bfd_elf64_write_out_phdrs,
2776 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 2777 bfd_elf64_checksum_contents,
15bda425 2778 bfd_elf64_write_relocs,
73ff0d56 2779 bfd_elf64_swap_symbol_in,
15bda425
JL
2780 bfd_elf64_swap_symbol_out,
2781 bfd_elf64_slurp_reloc_table,
2782 bfd_elf64_slurp_symbol_table,
2783 bfd_elf64_swap_dyn_in,
2784 bfd_elf64_swap_dyn_out,
947216bf
AM
2785 bfd_elf64_swap_reloc_in,
2786 bfd_elf64_swap_reloc_out,
2787 bfd_elf64_swap_reloca_in,
2788 bfd_elf64_swap_reloca_out
15bda425
JL
2789};
2790
2791#define TARGET_BIG_SYM bfd_elf64_hppa_vec
2792#define TARGET_BIG_NAME "elf64-hppa"
2793#define ELF_ARCH bfd_arch_hppa
2794#define ELF_MACHINE_CODE EM_PARISC
2795/* This is not strictly correct. The maximum page size for PA2.0 is
2796 64M. But everything still uses 4k. */
2797#define ELF_MAXPAGESIZE 0x1000
d1036acb
L
2798#define ELF_OSABI ELFOSABI_HPUX
2799
15bda425 2800#define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
157090f7 2801#define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
15bda425
JL
2802#define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2803#define elf_info_to_howto elf_hppa_info_to_howto
2804#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2805
2806#define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2807#define elf_backend_object_p elf64_hppa_object_p
2808#define elf_backend_final_write_processing \
2809 elf_hppa_final_write_processing
99c79b2e 2810#define elf_backend_fake_sections elf_hppa_fake_sections
15bda425
JL
2811#define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2812
f0fe0e16 2813#define elf_backend_relocate_section elf_hppa_relocate_section
15bda425
JL
2814
2815#define bfd_elf64_bfd_final_link elf_hppa_final_link
2816
2817#define elf_backend_create_dynamic_sections \
2818 elf64_hppa_create_dynamic_sections
2819#define elf_backend_post_process_headers elf64_hppa_post_process_headers
2820
74541ad4
AM
2821#define elf_backend_omit_section_dynsym \
2822 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
15bda425
JL
2823#define elf_backend_adjust_dynamic_symbol \
2824 elf64_hppa_adjust_dynamic_symbol
2825
2826#define elf_backend_size_dynamic_sections \
2827 elf64_hppa_size_dynamic_sections
2828
2829#define elf_backend_finish_dynamic_symbol \
2830 elf64_hppa_finish_dynamic_symbol
2831#define elf_backend_finish_dynamic_sections \
2832 elf64_hppa_finish_dynamic_sections
235ecfbc
NC
2833#define elf_backend_grok_prstatus elf64_hppa_grok_prstatus
2834#define elf_backend_grok_psinfo elf64_hppa_grok_psinfo
2835
15bda425
JL
2836/* Stuff for the BFD linker: */
2837#define bfd_elf64_bfd_link_hash_table_create \
2838 elf64_hppa_hash_table_create
2839
2840#define elf_backend_check_relocs \
2841 elf64_hppa_check_relocs
2842
2843#define elf_backend_size_info \
2844 hppa64_elf_size_info
2845
2846#define elf_backend_additional_program_headers \
2847 elf64_hppa_additional_program_headers
2848
2849#define elf_backend_modify_segment_map \
2850 elf64_hppa_modify_segment_map
2851
2852#define elf_backend_link_output_symbol_hook \
2853 elf64_hppa_link_output_symbol_hook
2854
15bda425
JL
2855#define elf_backend_want_got_plt 0
2856#define elf_backend_plt_readonly 0
2857#define elf_backend_want_plt_sym 0
2858#define elf_backend_got_header_size 0
b34976b6
AM
2859#define elf_backend_type_change_ok TRUE
2860#define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type
2861#define elf_backend_reloc_type_class elf64_hppa_reloc_type_class
2862#define elf_backend_rela_normal 1
29ef7005 2863#define elf_backend_special_sections elf64_hppa_special_sections
8a696751 2864#define elf_backend_action_discarded elf_hppa_action_discarded
d97a8924 2865#define elf_backend_section_from_phdr elf64_hppa_section_from_phdr
15bda425 2866
83d1651b
L
2867#define elf64_bed elf64_hppa_hpux_bed
2868
15bda425 2869#include "elf64-target.h"
d952f17a
AM
2870
2871#undef TARGET_BIG_SYM
2872#define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec
2873#undef TARGET_BIG_NAME
2874#define TARGET_BIG_NAME "elf64-hppa-linux"
d1036acb
L
2875#undef ELF_OSABI
2876#define ELF_OSABI ELFOSABI_LINUX
2877#undef elf_backend_post_process_headers
2878#define elf_backend_post_process_headers _bfd_elf_set_osabi
83d1651b
L
2879#undef elf64_bed
2880#define elf64_bed elf64_hppa_linux_bed
d952f17a 2881
d952f17a 2882#include "elf64-target.h"
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