elf32-hppa.c revision 1.1.1.8 1 1.1 christos /* BFD back-end for HP PA-RISC ELF files.
2 1.1.1.8 christos Copyright (C) 1990-2020 Free Software Foundation, Inc.
3 1.1 christos
4 1.1 christos Original code by
5 1.1 christos Center for Software Science
6 1.1 christos Department of Computer Science
7 1.1 christos University of Utah
8 1.1 christos Largely rewritten by Alan Modra <alan (at) linuxcare.com.au>
9 1.1 christos Naming cleanup by Carlos O'Donell <carlos (at) systemhalted.org>
10 1.1 christos TLS support written by Randolph Chung <tausq (at) debian.org>
11 1.1.1.2 christos
12 1.1 christos This file is part of BFD, the Binary File Descriptor library.
13 1.1 christos
14 1.1 christos This program is free software; you can redistribute it and/or modify
15 1.1 christos it under the terms of the GNU General Public License as published by
16 1.1 christos the Free Software Foundation; either version 3 of the License, or
17 1.1 christos (at your option) any later version.
18 1.1 christos
19 1.1 christos This program is distributed in the hope that it will be useful,
20 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
21 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 1.1 christos GNU General Public License for more details.
23 1.1 christos
24 1.1 christos You should have received a copy of the GNU General Public License
25 1.1 christos along with this program; if not, write to the Free Software
26 1.1 christos Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
27 1.1 christos MA 02110-1301, USA. */
28 1.1 christos
29 1.1 christos #include "sysdep.h"
30 1.1 christos #include "bfd.h"
31 1.1 christos #include "libbfd.h"
32 1.1 christos #include "elf-bfd.h"
33 1.1 christos #include "elf/hppa.h"
34 1.1 christos #include "libhppa.h"
35 1.1 christos #include "elf32-hppa.h"
36 1.1 christos #define ARCH_SIZE 32
37 1.1 christos #include "elf32-hppa.h"
38 1.1 christos #include "elf-hppa.h"
39 1.1 christos
40 1.1 christos /* In order to gain some understanding of code in this file without
41 1.1 christos knowing all the intricate details of the linker, note the
42 1.1 christos following:
43 1.1 christos
44 1.1 christos Functions named elf32_hppa_* are called by external routines, other
45 1.1 christos functions are only called locally. elf32_hppa_* functions appear
46 1.1 christos in this file more or less in the order in which they are called
47 1.1 christos from external routines. eg. elf32_hppa_check_relocs is called
48 1.1 christos early in the link process, elf32_hppa_finish_dynamic_sections is
49 1.1 christos one of the last functions. */
50 1.1 christos
51 1.1 christos /* We use two hash tables to hold information for linking PA ELF objects.
52 1.1 christos
53 1.1 christos The first is the elf32_hppa_link_hash_table which is derived
54 1.1 christos from the standard ELF linker hash table. We use this as a place to
55 1.1 christos attach other hash tables and static information.
56 1.1 christos
57 1.1 christos The second is the stub hash table which is derived from the
58 1.1 christos base BFD hash table. The stub hash table holds the information
59 1.1 christos necessary to build the linker stubs during a link.
60 1.1 christos
61 1.1 christos There are a number of different stubs generated by the linker.
62 1.1 christos
63 1.1 christos Long branch stub:
64 1.1 christos : ldil LR'X,%r1
65 1.1 christos : be,n RR'X(%sr4,%r1)
66 1.1 christos
67 1.1 christos PIC long branch stub:
68 1.1 christos : b,l .+8,%r1
69 1.1 christos : addil LR'X - ($PIC_pcrel$0 - 4),%r1
70 1.1 christos : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
71 1.1 christos
72 1.1 christos Import stub to call shared library routine from normal object file
73 1.1 christos (single sub-space version)
74 1.1.1.8 christos : addil LR'lt_ptr+ltoff,%dp ; get PLT address
75 1.1.1.8 christos : ldo RR'lt_ptr+ltoff(%r1),%r22 ;
76 1.1.1.8 christos : ldw 0(%r22),%r21 ; get procedure entry point
77 1.1 christos : bv %r0(%r21)
78 1.1.1.8 christos : ldw 4(%r22),%r19 ; get new dlt value.
79 1.1 christos
80 1.1 christos Import stub to call shared library routine from shared library
81 1.1 christos (single sub-space version)
82 1.1.1.8 christos : addil LR'ltoff,%r19 ; get PLT address
83 1.1.1.8 christos : ldo RR'ltoff(%r1),%r22
84 1.1.1.8 christos : ldw 0(%r22),%r21 ; get procedure entry point
85 1.1 christos : bv %r0(%r21)
86 1.1.1.8 christos : ldw 4(%r22),%r19 ; get new dlt value.
87 1.1 christos
88 1.1 christos Import stub to call shared library routine from normal object file
89 1.1 christos (multiple sub-space support)
90 1.1.1.8 christos : addil LR'lt_ptr+ltoff,%dp ; get PLT address
91 1.1.1.8 christos : ldo RR'lt_ptr+ltoff(%r1),%r22 ;
92 1.1.1.8 christos : ldw 0(%r22),%r21 ; get procedure entry point
93 1.1.1.8 christos : ldsid (%r21),%r1 ; get target sid
94 1.1.1.8 christos : ldw 4(%r22),%r19 ; get new dlt value.
95 1.1 christos : mtsp %r1,%sr0
96 1.1 christos : be 0(%sr0,%r21) ; branch to target
97 1.1 christos : stw %rp,-24(%sp) ; save rp
98 1.1 christos
99 1.1 christos Import stub to call shared library routine from shared library
100 1.1 christos (multiple sub-space support)
101 1.1.1.8 christos : addil LR'ltoff,%r19 ; get PLT address
102 1.1.1.8 christos : ldo RR'ltoff(%r1),%r22
103 1.1.1.8 christos : ldw 0(%r22),%r21 ; get procedure entry point
104 1.1.1.8 christos : ldsid (%r21),%r1 ; get target sid
105 1.1.1.8 christos : ldw 4(%r22),%r19 ; get new dlt value.
106 1.1 christos : mtsp %r1,%sr0
107 1.1 christos : be 0(%sr0,%r21) ; branch to target
108 1.1 christos : stw %rp,-24(%sp) ; save rp
109 1.1 christos
110 1.1 christos Export stub to return from shared lib routine (multiple sub-space support)
111 1.1 christos One of these is created for each exported procedure in a shared
112 1.1 christos library (and stored in the shared lib). Shared lib routines are
113 1.1 christos called via the first instruction in the export stub so that we can
114 1.1 christos do an inter-space return. Not required for single sub-space.
115 1.1 christos : bl,n X,%rp ; trap the return
116 1.1 christos : nop
117 1.1 christos : ldw -24(%sp),%rp ; restore the original rp
118 1.1 christos : ldsid (%rp),%r1
119 1.1 christos : mtsp %r1,%sr0
120 1.1 christos : be,n 0(%sr0,%rp) ; inter-space return. */
121 1.1 christos
122 1.1 christos
123 1.1 christos /* Variable names follow a coding style.
124 1.1 christos Please follow this (Apps Hungarian) style:
125 1.1 christos
126 1.1.1.7 christos Structure/Variable Prefix
127 1.1 christos elf_link_hash_table "etab"
128 1.1 christos elf_link_hash_entry "eh"
129 1.1.1.2 christos
130 1.1 christos elf32_hppa_link_hash_table "htab"
131 1.1 christos elf32_hppa_link_hash_entry "hh"
132 1.1 christos
133 1.1 christos bfd_hash_table "btab"
134 1.1 christos bfd_hash_entry "bh"
135 1.1.1.2 christos
136 1.1 christos bfd_hash_table containing stubs "bstab"
137 1.1 christos elf32_hppa_stub_hash_entry "hsh"
138 1.1 christos
139 1.1 christos Always remember to use GNU Coding Style. */
140 1.1.1.2 christos
141 1.1 christos #define PLT_ENTRY_SIZE 8
142 1.1 christos #define GOT_ENTRY_SIZE 4
143 1.1.1.8 christos #define LONG_BRANCH_STUB_SIZE 8
144 1.1.1.8 christos #define LONG_BRANCH_SHARED_STUB_SIZE 12
145 1.1.1.8 christos #define IMPORT_STUB_SIZE 20
146 1.1.1.8 christos #define IMPORT_SHARED_STUB_SIZE 32
147 1.1.1.8 christos #define EXPORT_STUB_SIZE 24
148 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
149 1.1 christos
150 1.1 christos static const bfd_byte plt_stub[] =
151 1.1 christos {
152 1.1.1.8 christos 0x0e, 0x80, 0x10, 0x95, /* 1: ldw 0(%r20),%r21 */
153 1.1.1.8 christos 0xea, 0xa0, 0xc0, 0x00, /* bv %r0(%r21) */
154 1.1 christos 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
155 1.1 christos #define PLT_STUB_ENTRY (3*4)
156 1.1 christos 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
157 1.1 christos 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
158 1.1 christos 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
159 1.1 christos 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
160 1.1 christos };
161 1.1 christos
162 1.1 christos /* Section name for stubs is the associated section name plus this
163 1.1 christos string. */
164 1.1 christos #define STUB_SUFFIX ".stub"
165 1.1 christos
166 1.1 christos /* We don't need to copy certain PC- or GP-relative dynamic relocs
167 1.1 christos into a shared object's dynamic section. All the relocs of the
168 1.1 christos limited class we are interested in, are absolute. */
169 1.1 christos #ifndef RELATIVE_DYNRELOCS
170 1.1 christos #define RELATIVE_DYNRELOCS 0
171 1.1 christos #define IS_ABSOLUTE_RELOC(r_type) 1
172 1.1.1.7 christos #define pc_dynrelocs(hh) 0
173 1.1 christos #endif
174 1.1 christos
175 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
176 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
177 1.1 christos section, and instead use a dynamic relocation to point into the
178 1.1 christos shared lib. */
179 1.1 christos #define ELIMINATE_COPY_RELOCS 1
180 1.1 christos
181 1.1 christos enum elf32_hppa_stub_type
182 1.1 christos {
183 1.1 christos hppa_stub_long_branch,
184 1.1 christos hppa_stub_long_branch_shared,
185 1.1 christos hppa_stub_import,
186 1.1 christos hppa_stub_import_shared,
187 1.1 christos hppa_stub_export,
188 1.1 christos hppa_stub_none
189 1.1 christos };
190 1.1 christos
191 1.1 christos struct elf32_hppa_stub_hash_entry
192 1.1 christos {
193 1.1 christos /* Base hash table entry structure. */
194 1.1 christos struct bfd_hash_entry bh_root;
195 1.1 christos
196 1.1 christos /* The stub section. */
197 1.1 christos asection *stub_sec;
198 1.1 christos
199 1.1 christos /* Offset within stub_sec of the beginning of this stub. */
200 1.1 christos bfd_vma stub_offset;
201 1.1 christos
202 1.1 christos /* Given the symbol's value and its section we can determine its final
203 1.1 christos value when building the stubs (so the stub knows where to jump. */
204 1.1 christos bfd_vma target_value;
205 1.1 christos asection *target_section;
206 1.1 christos
207 1.1 christos enum elf32_hppa_stub_type stub_type;
208 1.1 christos
209 1.1 christos /* The symbol table entry, if any, that this was derived from. */
210 1.1 christos struct elf32_hppa_link_hash_entry *hh;
211 1.1 christos
212 1.1 christos /* Where this stub is being called from, or, in the case of combined
213 1.1 christos stub sections, the first input section in the group. */
214 1.1 christos asection *id_sec;
215 1.1 christos };
216 1.1 christos
217 1.1.1.7 christos enum _tls_type
218 1.1.1.7 christos {
219 1.1.1.7 christos GOT_UNKNOWN = 0,
220 1.1.1.7 christos GOT_NORMAL = 1,
221 1.1.1.7 christos GOT_TLS_GD = 2,
222 1.1.1.7 christos GOT_TLS_LDM = 4,
223 1.1.1.7 christos GOT_TLS_IE = 8
224 1.1.1.7 christos };
225 1.1.1.7 christos
226 1.1 christos struct elf32_hppa_link_hash_entry
227 1.1 christos {
228 1.1 christos struct elf_link_hash_entry eh;
229 1.1 christos
230 1.1 christos /* A pointer to the most recently used stub hash entry against this
231 1.1 christos symbol. */
232 1.1 christos struct elf32_hppa_stub_hash_entry *hsh_cache;
233 1.1 christos
234 1.1.1.7 christos ENUM_BITFIELD (_tls_type) tls_type : 8;
235 1.1 christos
236 1.1 christos /* Set if this symbol is used by a plabel reloc. */
237 1.1 christos unsigned int plabel:1;
238 1.1 christos };
239 1.1 christos
240 1.1 christos struct elf32_hppa_link_hash_table
241 1.1 christos {
242 1.1 christos /* The main hash table. */
243 1.1 christos struct elf_link_hash_table etab;
244 1.1 christos
245 1.1 christos /* The stub hash table. */
246 1.1 christos struct bfd_hash_table bstab;
247 1.1 christos
248 1.1 christos /* Linker stub bfd. */
249 1.1 christos bfd *stub_bfd;
250 1.1 christos
251 1.1 christos /* Linker call-backs. */
252 1.1 christos asection * (*add_stub_section) (const char *, asection *);
253 1.1 christos void (*layout_sections_again) (void);
254 1.1 christos
255 1.1 christos /* Array to keep track of which stub sections have been created, and
256 1.1 christos information on stub grouping. */
257 1.1 christos struct map_stub
258 1.1 christos {
259 1.1 christos /* This is the section to which stubs in the group will be
260 1.1 christos attached. */
261 1.1 christos asection *link_sec;
262 1.1 christos /* The stub section. */
263 1.1 christos asection *stub_sec;
264 1.1 christos } *stub_group;
265 1.1 christos
266 1.1 christos /* Assorted information used by elf32_hppa_size_stubs. */
267 1.1 christos unsigned int bfd_count;
268 1.1.1.5 christos unsigned int top_index;
269 1.1 christos asection **input_list;
270 1.1 christos Elf_Internal_Sym **all_local_syms;
271 1.1 christos
272 1.1 christos /* Used during a final link to store the base of the text and data
273 1.1 christos segments so that we can perform SEGREL relocations. */
274 1.1 christos bfd_vma text_segment_base;
275 1.1 christos bfd_vma data_segment_base;
276 1.1 christos
277 1.1 christos /* Whether we support multiple sub-spaces for shared libs. */
278 1.1 christos unsigned int multi_subspace:1;
279 1.1 christos
280 1.1 christos /* Flags set when various size branches are detected. Used to
281 1.1 christos select suitable defaults for the stub group size. */
282 1.1 christos unsigned int has_12bit_branch:1;
283 1.1 christos unsigned int has_17bit_branch:1;
284 1.1 christos unsigned int has_22bit_branch:1;
285 1.1 christos
286 1.1 christos /* Set if we need a .plt stub to support lazy dynamic linking. */
287 1.1 christos unsigned int need_plt_stub:1;
288 1.1 christos
289 1.1 christos /* Data for LDM relocations. */
290 1.1 christos union
291 1.1 christos {
292 1.1 christos bfd_signed_vma refcount;
293 1.1 christos bfd_vma offset;
294 1.1 christos } tls_ldm_got;
295 1.1 christos };
296 1.1 christos
297 1.1 christos /* Various hash macros and functions. */
298 1.1 christos #define hppa_link_hash_table(p) \
299 1.1.1.8 christos ((is_elf_hash_table ((p)->hash) \
300 1.1.1.8 christos && elf_hash_table_id (elf_hash_table (p)) == HPPA32_ELF_DATA) \
301 1.1.1.8 christos ? (struct elf32_hppa_link_hash_table *) (p)->hash : NULL)
302 1.1 christos
303 1.1 christos #define hppa_elf_hash_entry(ent) \
304 1.1 christos ((struct elf32_hppa_link_hash_entry *)(ent))
305 1.1 christos
306 1.1 christos #define hppa_stub_hash_entry(ent) \
307 1.1 christos ((struct elf32_hppa_stub_hash_entry *)(ent))
308 1.1 christos
309 1.1 christos #define hppa_stub_hash_lookup(table, string, create, copy) \
310 1.1 christos ((struct elf32_hppa_stub_hash_entry *) \
311 1.1 christos bfd_hash_lookup ((table), (string), (create), (copy)))
312 1.1 christos
313 1.1 christos #define hppa_elf_local_got_tls_type(abfd) \
314 1.1 christos ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
315 1.1 christos
316 1.1 christos #define hh_name(hh) \
317 1.1 christos (hh ? hh->eh.root.root.string : "<undef>")
318 1.1 christos
319 1.1 christos #define eh_name(eh) \
320 1.1 christos (eh ? eh->root.root.string : "<undef>")
321 1.1 christos
322 1.1 christos /* Assorted hash table functions. */
323 1.1 christos
324 1.1 christos /* Initialize an entry in the stub hash table. */
325 1.1 christos
326 1.1 christos static struct bfd_hash_entry *
327 1.1 christos stub_hash_newfunc (struct bfd_hash_entry *entry,
328 1.1 christos struct bfd_hash_table *table,
329 1.1 christos const char *string)
330 1.1 christos {
331 1.1 christos /* Allocate the structure if it has not already been allocated by a
332 1.1 christos subclass. */
333 1.1 christos if (entry == NULL)
334 1.1 christos {
335 1.1 christos entry = bfd_hash_allocate (table,
336 1.1 christos sizeof (struct elf32_hppa_stub_hash_entry));
337 1.1 christos if (entry == NULL)
338 1.1 christos return entry;
339 1.1 christos }
340 1.1 christos
341 1.1 christos /* Call the allocation method of the superclass. */
342 1.1 christos entry = bfd_hash_newfunc (entry, table, string);
343 1.1 christos if (entry != NULL)
344 1.1 christos {
345 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
346 1.1 christos
347 1.1 christos /* Initialize the local fields. */
348 1.1 christos hsh = hppa_stub_hash_entry (entry);
349 1.1 christos hsh->stub_sec = NULL;
350 1.1 christos hsh->stub_offset = 0;
351 1.1 christos hsh->target_value = 0;
352 1.1 christos hsh->target_section = NULL;
353 1.1 christos hsh->stub_type = hppa_stub_long_branch;
354 1.1 christos hsh->hh = NULL;
355 1.1 christos hsh->id_sec = NULL;
356 1.1 christos }
357 1.1 christos
358 1.1 christos return entry;
359 1.1 christos }
360 1.1 christos
361 1.1 christos /* Initialize an entry in the link hash table. */
362 1.1 christos
363 1.1 christos static struct bfd_hash_entry *
364 1.1 christos hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
365 1.1 christos struct bfd_hash_table *table,
366 1.1 christos const char *string)
367 1.1 christos {
368 1.1 christos /* Allocate the structure if it has not already been allocated by a
369 1.1 christos subclass. */
370 1.1 christos if (entry == NULL)
371 1.1 christos {
372 1.1 christos entry = bfd_hash_allocate (table,
373 1.1 christos sizeof (struct elf32_hppa_link_hash_entry));
374 1.1 christos if (entry == NULL)
375 1.1 christos return entry;
376 1.1 christos }
377 1.1 christos
378 1.1 christos /* Call the allocation method of the superclass. */
379 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
380 1.1 christos if (entry != NULL)
381 1.1 christos {
382 1.1 christos struct elf32_hppa_link_hash_entry *hh;
383 1.1 christos
384 1.1 christos /* Initialize the local fields. */
385 1.1 christos hh = hppa_elf_hash_entry (entry);
386 1.1 christos hh->hsh_cache = NULL;
387 1.1 christos hh->plabel = 0;
388 1.1 christos hh->tls_type = GOT_UNKNOWN;
389 1.1 christos }
390 1.1 christos
391 1.1 christos return entry;
392 1.1 christos }
393 1.1 christos
394 1.1.1.4 christos /* Free the derived linker hash table. */
395 1.1.1.4 christos
396 1.1.1.4 christos static void
397 1.1.1.4 christos elf32_hppa_link_hash_table_free (bfd *obfd)
398 1.1.1.4 christos {
399 1.1.1.4 christos struct elf32_hppa_link_hash_table *htab
400 1.1.1.4 christos = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
401 1.1.1.4 christos
402 1.1.1.4 christos bfd_hash_table_free (&htab->bstab);
403 1.1.1.4 christos _bfd_elf_link_hash_table_free (obfd);
404 1.1.1.4 christos }
405 1.1.1.4 christos
406 1.1 christos /* Create the derived linker hash table. The PA ELF port uses the derived
407 1.1 christos hash table to keep information specific to the PA ELF linker (without
408 1.1 christos using static variables). */
409 1.1 christos
410 1.1 christos static struct bfd_link_hash_table *
411 1.1 christos elf32_hppa_link_hash_table_create (bfd *abfd)
412 1.1 christos {
413 1.1 christos struct elf32_hppa_link_hash_table *htab;
414 1.1.1.8 christos size_t amt = sizeof (*htab);
415 1.1 christos
416 1.1.1.2 christos htab = bfd_zmalloc (amt);
417 1.1 christos if (htab == NULL)
418 1.1 christos return NULL;
419 1.1 christos
420 1.1 christos if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
421 1.1 christos sizeof (struct elf32_hppa_link_hash_entry),
422 1.1 christos HPPA32_ELF_DATA))
423 1.1 christos {
424 1.1 christos free (htab);
425 1.1 christos return NULL;
426 1.1 christos }
427 1.1 christos
428 1.1 christos /* Init the stub hash table too. */
429 1.1 christos if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
430 1.1 christos sizeof (struct elf32_hppa_stub_hash_entry)))
431 1.1.1.4 christos {
432 1.1.1.4 christos _bfd_elf_link_hash_table_free (abfd);
433 1.1.1.4 christos return NULL;
434 1.1.1.4 christos }
435 1.1.1.4 christos htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
436 1.1.1.8 christos htab->etab.dt_pltgot_required = TRUE;
437 1.1 christos
438 1.1 christos htab->text_segment_base = (bfd_vma) -1;
439 1.1 christos htab->data_segment_base = (bfd_vma) -1;
440 1.1 christos return &htab->etab.root;
441 1.1 christos }
442 1.1 christos
443 1.1.1.5 christos /* Initialize the linker stubs BFD so that we can use it for linker
444 1.1.1.5 christos created dynamic sections. */
445 1.1.1.5 christos
446 1.1.1.5 christos void
447 1.1.1.5 christos elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
448 1.1.1.5 christos {
449 1.1.1.5 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
450 1.1.1.5 christos
451 1.1.1.5 christos elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32;
452 1.1.1.5 christos htab->etab.dynobj = abfd;
453 1.1.1.5 christos }
454 1.1.1.5 christos
455 1.1 christos /* Build a name for an entry in the stub hash table. */
456 1.1 christos
457 1.1 christos static char *
458 1.1 christos hppa_stub_name (const asection *input_section,
459 1.1 christos const asection *sym_sec,
460 1.1 christos const struct elf32_hppa_link_hash_entry *hh,
461 1.1 christos const Elf_Internal_Rela *rela)
462 1.1 christos {
463 1.1 christos char *stub_name;
464 1.1 christos bfd_size_type len;
465 1.1 christos
466 1.1 christos if (hh)
467 1.1 christos {
468 1.1 christos len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
469 1.1 christos stub_name = bfd_malloc (len);
470 1.1 christos if (stub_name != NULL)
471 1.1 christos sprintf (stub_name, "%08x_%s+%x",
472 1.1 christos input_section->id & 0xffffffff,
473 1.1 christos hh_name (hh),
474 1.1 christos (int) rela->r_addend & 0xffffffff);
475 1.1 christos }
476 1.1 christos else
477 1.1 christos {
478 1.1 christos len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
479 1.1 christos stub_name = bfd_malloc (len);
480 1.1 christos if (stub_name != NULL)
481 1.1 christos sprintf (stub_name, "%08x_%x:%x+%x",
482 1.1 christos input_section->id & 0xffffffff,
483 1.1 christos sym_sec->id & 0xffffffff,
484 1.1 christos (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
485 1.1 christos (int) rela->r_addend & 0xffffffff);
486 1.1 christos }
487 1.1 christos return stub_name;
488 1.1 christos }
489 1.1 christos
490 1.1 christos /* Look up an entry in the stub hash. Stub entries are cached because
491 1.1 christos creating the stub name takes a bit of time. */
492 1.1 christos
493 1.1 christos static struct elf32_hppa_stub_hash_entry *
494 1.1 christos hppa_get_stub_entry (const asection *input_section,
495 1.1 christos const asection *sym_sec,
496 1.1 christos struct elf32_hppa_link_hash_entry *hh,
497 1.1 christos const Elf_Internal_Rela *rela,
498 1.1 christos struct elf32_hppa_link_hash_table *htab)
499 1.1 christos {
500 1.1 christos struct elf32_hppa_stub_hash_entry *hsh_entry;
501 1.1 christos const asection *id_sec;
502 1.1 christos
503 1.1 christos /* If this input section is part of a group of sections sharing one
504 1.1 christos stub section, then use the id of the first section in the group.
505 1.1 christos Stub names need to include a section id, as there may well be
506 1.1 christos more than one stub used to reach say, printf, and we need to
507 1.1 christos distinguish between them. */
508 1.1 christos id_sec = htab->stub_group[input_section->id].link_sec;
509 1.1.1.7 christos if (id_sec == NULL)
510 1.1.1.7 christos return NULL;
511 1.1 christos
512 1.1 christos if (hh != NULL && hh->hsh_cache != NULL
513 1.1 christos && hh->hsh_cache->hh == hh
514 1.1 christos && hh->hsh_cache->id_sec == id_sec)
515 1.1 christos {
516 1.1 christos hsh_entry = hh->hsh_cache;
517 1.1 christos }
518 1.1 christos else
519 1.1 christos {
520 1.1 christos char *stub_name;
521 1.1 christos
522 1.1 christos stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
523 1.1 christos if (stub_name == NULL)
524 1.1 christos return NULL;
525 1.1 christos
526 1.1 christos hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
527 1.1 christos stub_name, FALSE, FALSE);
528 1.1 christos if (hh != NULL)
529 1.1 christos hh->hsh_cache = hsh_entry;
530 1.1 christos
531 1.1 christos free (stub_name);
532 1.1 christos }
533 1.1 christos
534 1.1 christos return hsh_entry;
535 1.1 christos }
536 1.1 christos
537 1.1 christos /* Add a new stub entry to the stub hash. Not all fields of the new
538 1.1 christos stub entry are initialised. */
539 1.1 christos
540 1.1 christos static struct elf32_hppa_stub_hash_entry *
541 1.1 christos hppa_add_stub (const char *stub_name,
542 1.1 christos asection *section,
543 1.1 christos struct elf32_hppa_link_hash_table *htab)
544 1.1 christos {
545 1.1 christos asection *link_sec;
546 1.1 christos asection *stub_sec;
547 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
548 1.1 christos
549 1.1 christos link_sec = htab->stub_group[section->id].link_sec;
550 1.1 christos stub_sec = htab->stub_group[section->id].stub_sec;
551 1.1 christos if (stub_sec == NULL)
552 1.1 christos {
553 1.1 christos stub_sec = htab->stub_group[link_sec->id].stub_sec;
554 1.1 christos if (stub_sec == NULL)
555 1.1 christos {
556 1.1 christos size_t namelen;
557 1.1 christos bfd_size_type len;
558 1.1 christos char *s_name;
559 1.1 christos
560 1.1 christos namelen = strlen (link_sec->name);
561 1.1 christos len = namelen + sizeof (STUB_SUFFIX);
562 1.1 christos s_name = bfd_alloc (htab->stub_bfd, len);
563 1.1 christos if (s_name == NULL)
564 1.1 christos return NULL;
565 1.1 christos
566 1.1 christos memcpy (s_name, link_sec->name, namelen);
567 1.1 christos memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
568 1.1 christos stub_sec = (*htab->add_stub_section) (s_name, link_sec);
569 1.1 christos if (stub_sec == NULL)
570 1.1 christos return NULL;
571 1.1 christos htab->stub_group[link_sec->id].stub_sec = stub_sec;
572 1.1 christos }
573 1.1 christos htab->stub_group[section->id].stub_sec = stub_sec;
574 1.1 christos }
575 1.1 christos
576 1.1 christos /* Enter this entry into the linker stub hash table. */
577 1.1 christos hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
578 1.1 christos TRUE, FALSE);
579 1.1 christos if (hsh == NULL)
580 1.1 christos {
581 1.1.1.6 christos /* xgettext:c-format */
582 1.1.1.7 christos _bfd_error_handler (_("%pB: cannot create stub entry %s"),
583 1.1.1.6 christos section->owner, stub_name);
584 1.1 christos return NULL;
585 1.1 christos }
586 1.1 christos
587 1.1 christos hsh->stub_sec = stub_sec;
588 1.1 christos hsh->stub_offset = 0;
589 1.1 christos hsh->id_sec = link_sec;
590 1.1 christos return hsh;
591 1.1 christos }
592 1.1 christos
593 1.1 christos /* Determine the type of stub needed, if any, for a call. */
594 1.1 christos
595 1.1 christos static enum elf32_hppa_stub_type
596 1.1 christos hppa_type_of_stub (asection *input_sec,
597 1.1 christos const Elf_Internal_Rela *rela,
598 1.1 christos struct elf32_hppa_link_hash_entry *hh,
599 1.1 christos bfd_vma destination,
600 1.1 christos struct bfd_link_info *info)
601 1.1 christos {
602 1.1 christos bfd_vma location;
603 1.1 christos bfd_vma branch_offset;
604 1.1 christos bfd_vma max_branch_offset;
605 1.1 christos unsigned int r_type;
606 1.1 christos
607 1.1 christos if (hh != NULL
608 1.1 christos && hh->eh.plt.offset != (bfd_vma) -1
609 1.1 christos && hh->eh.dynindx != -1
610 1.1 christos && !hh->plabel
611 1.1.1.5 christos && (bfd_link_pic (info)
612 1.1 christos || !hh->eh.def_regular
613 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak))
614 1.1 christos {
615 1.1 christos /* We need an import stub. Decide between hppa_stub_import
616 1.1 christos and hppa_stub_import_shared later. */
617 1.1 christos return hppa_stub_import;
618 1.1 christos }
619 1.1 christos
620 1.1.1.7 christos if (destination == (bfd_vma) -1)
621 1.1.1.7 christos return hppa_stub_none;
622 1.1.1.7 christos
623 1.1 christos /* Determine where the call point is. */
624 1.1 christos location = (input_sec->output_offset
625 1.1 christos + input_sec->output_section->vma
626 1.1 christos + rela->r_offset);
627 1.1 christos
628 1.1 christos branch_offset = destination - location - 8;
629 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
630 1.1 christos
631 1.1 christos /* Determine if a long branch stub is needed. parisc branch offsets
632 1.1 christos are relative to the second instruction past the branch, ie. +8
633 1.1 christos bytes on from the branch instruction location. The offset is
634 1.1 christos signed and counts in units of 4 bytes. */
635 1.1 christos if (r_type == (unsigned int) R_PARISC_PCREL17F)
636 1.1 christos max_branch_offset = (1 << (17 - 1)) << 2;
637 1.1 christos
638 1.1 christos else if (r_type == (unsigned int) R_PARISC_PCREL12F)
639 1.1 christos max_branch_offset = (1 << (12 - 1)) << 2;
640 1.1 christos
641 1.1 christos else /* R_PARISC_PCREL22F. */
642 1.1 christos max_branch_offset = (1 << (22 - 1)) << 2;
643 1.1 christos
644 1.1 christos if (branch_offset + max_branch_offset >= 2*max_branch_offset)
645 1.1 christos return hppa_stub_long_branch;
646 1.1 christos
647 1.1 christos return hppa_stub_none;
648 1.1 christos }
649 1.1 christos
650 1.1 christos /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
651 1.1 christos IN_ARG contains the link info pointer. */
652 1.1 christos
653 1.1 christos #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
654 1.1 christos #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
655 1.1 christos
656 1.1 christos #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
657 1.1 christos #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
658 1.1 christos #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
659 1.1 christos
660 1.1 christos #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
661 1.1 christos #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
662 1.1 christos #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
663 1.1 christos #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
664 1.1 christos
665 1.1 christos #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
666 1.1 christos #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
667 1.1 christos
668 1.1.1.8 christos #define LDO_R1_R22 0x34360000 /* ldo RR'XXX(%r1),%r22 */
669 1.1.1.8 christos #define LDW_R22_R21 0x0ec01095 /* ldw 0(%r22),%r21 */
670 1.1.1.8 christos #define LDW_R22_R19 0x0ec81093 /* ldw 4(%r22),%r19 */
671 1.1.1.8 christos
672 1.1 christos #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
673 1.1 christos #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
674 1.1 christos #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
675 1.1 christos #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
676 1.1 christos
677 1.1 christos #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
678 1.1 christos #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
679 1.1 christos #define NOP 0x08000240 /* nop */
680 1.1 christos #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
681 1.1 christos #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
682 1.1 christos #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
683 1.1 christos
684 1.1 christos #ifndef R19_STUBS
685 1.1 christos #define R19_STUBS 1
686 1.1 christos #endif
687 1.1 christos
688 1.1 christos #if R19_STUBS
689 1.1 christos #define LDW_R1_DLT LDW_R1_R19
690 1.1 christos #else
691 1.1 christos #define LDW_R1_DLT LDW_R1_DP
692 1.1 christos #endif
693 1.1 christos
694 1.1 christos static bfd_boolean
695 1.1 christos hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
696 1.1 christos {
697 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
698 1.1 christos struct bfd_link_info *info;
699 1.1 christos struct elf32_hppa_link_hash_table *htab;
700 1.1 christos asection *stub_sec;
701 1.1 christos bfd *stub_bfd;
702 1.1 christos bfd_byte *loc;
703 1.1 christos bfd_vma sym_value;
704 1.1 christos bfd_vma insn;
705 1.1 christos bfd_vma off;
706 1.1 christos int val;
707 1.1 christos int size;
708 1.1 christos
709 1.1 christos /* Massage our args to the form they really have. */
710 1.1 christos hsh = hppa_stub_hash_entry (bh);
711 1.1 christos info = (struct bfd_link_info *)in_arg;
712 1.1 christos
713 1.1 christos htab = hppa_link_hash_table (info);
714 1.1 christos if (htab == NULL)
715 1.1 christos return FALSE;
716 1.1 christos
717 1.1 christos stub_sec = hsh->stub_sec;
718 1.1 christos
719 1.1 christos /* Make a note of the offset within the stubs for this entry. */
720 1.1 christos hsh->stub_offset = stub_sec->size;
721 1.1 christos loc = stub_sec->contents + hsh->stub_offset;
722 1.1 christos
723 1.1 christos stub_bfd = stub_sec->owner;
724 1.1 christos
725 1.1 christos switch (hsh->stub_type)
726 1.1 christos {
727 1.1 christos case hppa_stub_long_branch:
728 1.1.1.8 christos /* Fail if the target section could not be assigned to an output
729 1.1.1.8 christos section. The user should fix his linker script. */
730 1.1.1.8 christos if (hsh->target_section->output_section == NULL
731 1.1.1.8 christos && info->non_contiguous_regions)
732 1.1.1.8 christos info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output "
733 1.1.1.8 christos "section. Retry without "
734 1.1.1.8 christos "--enable-non-contiguous-regions.\n"),
735 1.1.1.8 christos hsh->target_section);
736 1.1.1.8 christos
737 1.1 christos /* Create the long branch. A long branch is formed with "ldil"
738 1.1 christos loading the upper bits of the target address into a register,
739 1.1 christos then branching with "be" which adds in the lower bits.
740 1.1 christos The "be" has its delay slot nullified. */
741 1.1 christos sym_value = (hsh->target_value
742 1.1 christos + hsh->target_section->output_offset
743 1.1 christos + hsh->target_section->output_section->vma);
744 1.1 christos
745 1.1 christos val = hppa_field_adjust (sym_value, 0, e_lrsel);
746 1.1 christos insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
747 1.1 christos bfd_put_32 (stub_bfd, insn, loc);
748 1.1 christos
749 1.1 christos val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
750 1.1 christos insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
751 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 4);
752 1.1 christos
753 1.1.1.8 christos size = LONG_BRANCH_STUB_SIZE;
754 1.1 christos break;
755 1.1 christos
756 1.1 christos case hppa_stub_long_branch_shared:
757 1.1.1.8 christos /* Fail if the target section could not be assigned to an output
758 1.1.1.8 christos section. The user should fix his linker script. */
759 1.1.1.8 christos if (hsh->target_section->output_section == NULL
760 1.1.1.8 christos && info->non_contiguous_regions)
761 1.1.1.8 christos info->callbacks->einfo (_("%F%P: Could not assign %pA to an output "
762 1.1.1.8 christos "section. Retry without "
763 1.1.1.8 christos "--enable-non-contiguous-regions.\n"),
764 1.1.1.8 christos hsh->target_section);
765 1.1.1.8 christos
766 1.1 christos /* Branches are relative. This is where we are going to. */
767 1.1 christos sym_value = (hsh->target_value
768 1.1 christos + hsh->target_section->output_offset
769 1.1 christos + hsh->target_section->output_section->vma);
770 1.1 christos
771 1.1 christos /* And this is where we are coming from, more or less. */
772 1.1 christos sym_value -= (hsh->stub_offset
773 1.1 christos + stub_sec->output_offset
774 1.1 christos + stub_sec->output_section->vma);
775 1.1 christos
776 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
777 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
778 1.1 christos insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
779 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 4);
780 1.1 christos
781 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
782 1.1 christos insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
783 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 8);
784 1.1.1.8 christos size = LONG_BRANCH_SHARED_STUB_SIZE;
785 1.1 christos break;
786 1.1 christos
787 1.1 christos case hppa_stub_import:
788 1.1 christos case hppa_stub_import_shared:
789 1.1 christos off = hsh->hh->eh.plt.offset;
790 1.1 christos if (off >= (bfd_vma) -2)
791 1.1 christos abort ();
792 1.1 christos
793 1.1 christos off &= ~ (bfd_vma) 1;
794 1.1 christos sym_value = (off
795 1.1.1.6 christos + htab->etab.splt->output_offset
796 1.1.1.6 christos + htab->etab.splt->output_section->vma
797 1.1.1.6 christos - elf_gp (htab->etab.splt->output_section->owner));
798 1.1 christos
799 1.1 christos insn = ADDIL_DP;
800 1.1 christos #if R19_STUBS
801 1.1 christos if (hsh->stub_type == hppa_stub_import_shared)
802 1.1 christos insn = ADDIL_R19;
803 1.1 christos #endif
804 1.1.1.8 christos
805 1.1.1.8 christos /* Load function descriptor address into register %r22. It is
806 1.1.1.8 christos sometimes needed for lazy binding. */
807 1.1 christos val = hppa_field_adjust (sym_value, 0, e_lrsel),
808 1.1 christos insn = hppa_rebuild_insn ((int) insn, val, 21);
809 1.1 christos bfd_put_32 (stub_bfd, insn, loc);
810 1.1 christos
811 1.1 christos val = hppa_field_adjust (sym_value, 0, e_rrsel);
812 1.1.1.8 christos insn = hppa_rebuild_insn ((int) LDO_R1_R22, val, 14);
813 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 4);
814 1.1 christos
815 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R21, loc + 8);
816 1.1.1.8 christos
817 1.1 christos if (htab->multi_subspace)
818 1.1 christos {
819 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
820 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16);
821 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 20);
822 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 24);
823 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 28);
824 1.1 christos
825 1.1.1.8 christos size = IMPORT_SHARED_STUB_SIZE;
826 1.1 christos }
827 1.1 christos else
828 1.1 christos {
829 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 12);
830 1.1.1.8 christos bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16);
831 1.1 christos
832 1.1.1.8 christos size = IMPORT_STUB_SIZE;
833 1.1 christos }
834 1.1 christos
835 1.1 christos break;
836 1.1 christos
837 1.1 christos case hppa_stub_export:
838 1.1.1.8 christos /* Fail if the target section could not be assigned to an output
839 1.1.1.8 christos section. The user should fix his linker script. */
840 1.1.1.8 christos if (hsh->target_section->output_section == NULL
841 1.1.1.8 christos && info->non_contiguous_regions)
842 1.1.1.8 christos info->callbacks->einfo (_("%F%P: Could not assign %pA to an output "
843 1.1.1.8 christos "section. Retry without "
844 1.1.1.8 christos "--enable-non-contiguous-regions.\n"),
845 1.1.1.8 christos hsh->target_section);
846 1.1.1.8 christos
847 1.1 christos /* Branches are relative. This is where we are going to. */
848 1.1 christos sym_value = (hsh->target_value
849 1.1 christos + hsh->target_section->output_offset
850 1.1 christos + hsh->target_section->output_section->vma);
851 1.1 christos
852 1.1 christos /* And this is where we are coming from. */
853 1.1 christos sym_value -= (hsh->stub_offset
854 1.1 christos + stub_sec->output_offset
855 1.1 christos + stub_sec->output_section->vma);
856 1.1 christos
857 1.1 christos if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
858 1.1 christos && (!htab->has_22bit_branch
859 1.1 christos || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
860 1.1 christos {
861 1.1.1.6 christos _bfd_error_handler
862 1.1.1.6 christos /* xgettext:c-format */
863 1.1.1.7 christos (_("%pB(%pA+%#" PRIx64 "): "
864 1.1.1.7 christos "cannot reach %s, recompile with -ffunction-sections"),
865 1.1 christos hsh->target_section->owner,
866 1.1 christos stub_sec,
867 1.1.1.7 christos (uint64_t) hsh->stub_offset,
868 1.1 christos hsh->bh_root.string);
869 1.1 christos bfd_set_error (bfd_error_bad_value);
870 1.1 christos return FALSE;
871 1.1 christos }
872 1.1 christos
873 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
874 1.1 christos if (!htab->has_22bit_branch)
875 1.1 christos insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
876 1.1 christos else
877 1.1 christos insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
878 1.1 christos bfd_put_32 (stub_bfd, insn, loc);
879 1.1 christos
880 1.1.1.7 christos bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
881 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
882 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
883 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
884 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
885 1.1 christos
886 1.1 christos /* Point the function symbol at the stub. */
887 1.1 christos hsh->hh->eh.root.u.def.section = stub_sec;
888 1.1 christos hsh->hh->eh.root.u.def.value = stub_sec->size;
889 1.1 christos
890 1.1.1.8 christos size = EXPORT_STUB_SIZE;
891 1.1 christos break;
892 1.1 christos
893 1.1 christos default:
894 1.1 christos BFD_FAIL ();
895 1.1 christos return FALSE;
896 1.1 christos }
897 1.1 christos
898 1.1 christos stub_sec->size += size;
899 1.1 christos return TRUE;
900 1.1 christos }
901 1.1 christos
902 1.1 christos #undef LDIL_R1
903 1.1 christos #undef BE_SR4_R1
904 1.1 christos #undef BL_R1
905 1.1 christos #undef ADDIL_R1
906 1.1 christos #undef DEPI_R1
907 1.1 christos #undef LDW_R1_R21
908 1.1 christos #undef LDW_R1_DLT
909 1.1 christos #undef LDW_R1_R19
910 1.1 christos #undef ADDIL_R19
911 1.1 christos #undef LDW_R1_DP
912 1.1 christos #undef LDSID_R21_R1
913 1.1 christos #undef MTSP_R1
914 1.1 christos #undef BE_SR0_R21
915 1.1 christos #undef STW_RP
916 1.1 christos #undef BV_R0_R21
917 1.1 christos #undef BL_RP
918 1.1 christos #undef NOP
919 1.1 christos #undef LDW_RP
920 1.1 christos #undef LDSID_RP_R1
921 1.1 christos #undef BE_SR0_RP
922 1.1 christos
923 1.1 christos /* As above, but don't actually build the stub. Just bump offset so
924 1.1 christos we know stub section sizes. */
925 1.1 christos
926 1.1 christos static bfd_boolean
927 1.1 christos hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
928 1.1 christos {
929 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
930 1.1 christos struct elf32_hppa_link_hash_table *htab;
931 1.1 christos int size;
932 1.1 christos
933 1.1 christos /* Massage our args to the form they really have. */
934 1.1 christos hsh = hppa_stub_hash_entry (bh);
935 1.1 christos htab = in_arg;
936 1.1 christos
937 1.1 christos if (hsh->stub_type == hppa_stub_long_branch)
938 1.1.1.8 christos size = LONG_BRANCH_STUB_SIZE;
939 1.1 christos else if (hsh->stub_type == hppa_stub_long_branch_shared)
940 1.1.1.8 christos size = LONG_BRANCH_SHARED_STUB_SIZE;
941 1.1 christos else if (hsh->stub_type == hppa_stub_export)
942 1.1.1.8 christos size = EXPORT_STUB_SIZE;
943 1.1 christos else /* hppa_stub_import or hppa_stub_import_shared. */
944 1.1 christos {
945 1.1 christos if (htab->multi_subspace)
946 1.1.1.8 christos size = IMPORT_SHARED_STUB_SIZE;
947 1.1 christos else
948 1.1.1.8 christos size = IMPORT_STUB_SIZE;
949 1.1 christos }
950 1.1 christos
951 1.1 christos hsh->stub_sec->size += size;
952 1.1 christos return TRUE;
953 1.1 christos }
954 1.1 christos
955 1.1 christos /* Return nonzero if ABFD represents an HPPA ELF32 file.
956 1.1 christos Additionally we set the default architecture and machine. */
957 1.1 christos
958 1.1 christos static bfd_boolean
959 1.1 christos elf32_hppa_object_p (bfd *abfd)
960 1.1 christos {
961 1.1 christos Elf_Internal_Ehdr * i_ehdrp;
962 1.1 christos unsigned int flags;
963 1.1 christos
964 1.1 christos i_ehdrp = elf_elfheader (abfd);
965 1.1 christos if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
966 1.1 christos {
967 1.1.1.2 christos /* GCC on hppa-linux produces binaries with OSABI=GNU,
968 1.1 christos but the kernel produces corefiles with OSABI=SysV. */
969 1.1.1.2 christos if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
970 1.1 christos i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
971 1.1 christos return FALSE;
972 1.1 christos }
973 1.1 christos else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
974 1.1 christos {
975 1.1 christos /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
976 1.1 christos but the kernel produces corefiles with OSABI=SysV. */
977 1.1 christos if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
978 1.1 christos i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
979 1.1 christos return FALSE;
980 1.1 christos }
981 1.1 christos else
982 1.1 christos {
983 1.1 christos if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
984 1.1 christos return FALSE;
985 1.1 christos }
986 1.1 christos
987 1.1 christos flags = i_ehdrp->e_flags;
988 1.1 christos switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
989 1.1 christos {
990 1.1 christos case EFA_PARISC_1_0:
991 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
992 1.1 christos case EFA_PARISC_1_1:
993 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
994 1.1 christos case EFA_PARISC_2_0:
995 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
996 1.1 christos case EFA_PARISC_2_0 | EF_PARISC_WIDE:
997 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
998 1.1 christos }
999 1.1 christos return TRUE;
1000 1.1 christos }
1001 1.1 christos
1002 1.1 christos /* Create the .plt and .got sections, and set up our hash table
1003 1.1 christos short-cuts to various dynamic sections. */
1004 1.1 christos
1005 1.1 christos static bfd_boolean
1006 1.1 christos elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1007 1.1 christos {
1008 1.1 christos struct elf32_hppa_link_hash_table *htab;
1009 1.1 christos struct elf_link_hash_entry *eh;
1010 1.1 christos
1011 1.1 christos /* Don't try to create the .plt and .got twice. */
1012 1.1 christos htab = hppa_link_hash_table (info);
1013 1.1 christos if (htab == NULL)
1014 1.1 christos return FALSE;
1015 1.1.1.6 christos if (htab->etab.splt != NULL)
1016 1.1 christos return TRUE;
1017 1.1 christos
1018 1.1 christos /* Call the generic code to do most of the work. */
1019 1.1 christos if (! _bfd_elf_create_dynamic_sections (abfd, info))
1020 1.1 christos return FALSE;
1021 1.1 christos
1022 1.1 christos /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
1023 1.1 christos application, because __canonicalize_funcptr_for_compare needs it. */
1024 1.1 christos eh = elf_hash_table (info)->hgot;
1025 1.1 christos eh->forced_local = 0;
1026 1.1 christos eh->other = STV_DEFAULT;
1027 1.1 christos return bfd_elf_link_record_dynamic_symbol (info, eh);
1028 1.1 christos }
1029 1.1 christos
1030 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
1031 1.1 christos
1032 1.1 christos static void
1033 1.1 christos elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
1034 1.1 christos struct elf_link_hash_entry *eh_dir,
1035 1.1 christos struct elf_link_hash_entry *eh_ind)
1036 1.1 christos {
1037 1.1 christos struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
1038 1.1 christos
1039 1.1 christos hh_dir = hppa_elf_hash_entry (eh_dir);
1040 1.1 christos hh_ind = hppa_elf_hash_entry (eh_ind);
1041 1.1 christos
1042 1.1.1.7 christos if (eh_ind->root.type == bfd_link_hash_indirect)
1043 1.1 christos {
1044 1.1.1.7 christos hh_dir->plabel |= hh_ind->plabel;
1045 1.1.1.7 christos hh_dir->tls_type |= hh_ind->tls_type;
1046 1.1.1.7 christos hh_ind->tls_type = GOT_UNKNOWN;
1047 1.1 christos }
1048 1.1 christos
1049 1.1.1.7 christos _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
1050 1.1 christos }
1051 1.1 christos
1052 1.1 christos static int
1053 1.1 christos elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
1054 1.1 christos int r_type, int is_local ATTRIBUTE_UNUSED)
1055 1.1 christos {
1056 1.1 christos /* For now we don't support linker optimizations. */
1057 1.1 christos return r_type;
1058 1.1 christos }
1059 1.1 christos
1060 1.1 christos /* Return a pointer to the local GOT, PLT and TLS reference counts
1061 1.1 christos for ABFD. Returns NULL if the storage allocation fails. */
1062 1.1 christos
1063 1.1 christos static bfd_signed_vma *
1064 1.1 christos hppa32_elf_local_refcounts (bfd *abfd)
1065 1.1 christos {
1066 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1067 1.1 christos bfd_signed_vma *local_refcounts;
1068 1.1.1.2 christos
1069 1.1 christos local_refcounts = elf_local_got_refcounts (abfd);
1070 1.1 christos if (local_refcounts == NULL)
1071 1.1 christos {
1072 1.1 christos bfd_size_type size;
1073 1.1 christos
1074 1.1 christos /* Allocate space for local GOT and PLT reference
1075 1.1 christos counts. Done this way to save polluting elf_obj_tdata
1076 1.1 christos with another target specific pointer. */
1077 1.1 christos size = symtab_hdr->sh_info;
1078 1.1 christos size *= 2 * sizeof (bfd_signed_vma);
1079 1.1 christos /* Add in space to store the local GOT TLS types. */
1080 1.1 christos size += symtab_hdr->sh_info;
1081 1.1 christos local_refcounts = bfd_zalloc (abfd, size);
1082 1.1 christos if (local_refcounts == NULL)
1083 1.1 christos return NULL;
1084 1.1 christos elf_local_got_refcounts (abfd) = local_refcounts;
1085 1.1 christos memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
1086 1.1 christos symtab_hdr->sh_info);
1087 1.1 christos }
1088 1.1 christos return local_refcounts;
1089 1.1 christos }
1090 1.1 christos
1091 1.1 christos
1092 1.1 christos /* Look through the relocs for a section during the first phase, and
1093 1.1 christos calculate needed space in the global offset table, procedure linkage
1094 1.1 christos table, and dynamic reloc sections. At this point we haven't
1095 1.1 christos necessarily read all the input files. */
1096 1.1 christos
1097 1.1 christos static bfd_boolean
1098 1.1 christos elf32_hppa_check_relocs (bfd *abfd,
1099 1.1 christos struct bfd_link_info *info,
1100 1.1 christos asection *sec,
1101 1.1 christos const Elf_Internal_Rela *relocs)
1102 1.1 christos {
1103 1.1 christos Elf_Internal_Shdr *symtab_hdr;
1104 1.1 christos struct elf_link_hash_entry **eh_syms;
1105 1.1 christos const Elf_Internal_Rela *rela;
1106 1.1 christos const Elf_Internal_Rela *rela_end;
1107 1.1 christos struct elf32_hppa_link_hash_table *htab;
1108 1.1 christos asection *sreloc;
1109 1.1 christos
1110 1.1.1.5 christos if (bfd_link_relocatable (info))
1111 1.1 christos return TRUE;
1112 1.1 christos
1113 1.1 christos htab = hppa_link_hash_table (info);
1114 1.1 christos if (htab == NULL)
1115 1.1 christos return FALSE;
1116 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1117 1.1 christos eh_syms = elf_sym_hashes (abfd);
1118 1.1 christos sreloc = NULL;
1119 1.1 christos
1120 1.1 christos rela_end = relocs + sec->reloc_count;
1121 1.1 christos for (rela = relocs; rela < rela_end; rela++)
1122 1.1 christos {
1123 1.1 christos enum {
1124 1.1 christos NEED_GOT = 1,
1125 1.1 christos NEED_PLT = 2,
1126 1.1 christos NEED_DYNREL = 4,
1127 1.1 christos PLT_PLABEL = 8
1128 1.1 christos };
1129 1.1 christos
1130 1.1 christos unsigned int r_symndx, r_type;
1131 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1132 1.1 christos int need_entry = 0;
1133 1.1 christos
1134 1.1 christos r_symndx = ELF32_R_SYM (rela->r_info);
1135 1.1 christos
1136 1.1 christos if (r_symndx < symtab_hdr->sh_info)
1137 1.1 christos hh = NULL;
1138 1.1 christos else
1139 1.1 christos {
1140 1.1 christos hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
1141 1.1 christos while (hh->eh.root.type == bfd_link_hash_indirect
1142 1.1 christos || hh->eh.root.type == bfd_link_hash_warning)
1143 1.1 christos hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
1144 1.1 christos }
1145 1.1 christos
1146 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
1147 1.1 christos r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
1148 1.1 christos
1149 1.1 christos switch (r_type)
1150 1.1 christos {
1151 1.1 christos case R_PARISC_DLTIND14F:
1152 1.1 christos case R_PARISC_DLTIND14R:
1153 1.1 christos case R_PARISC_DLTIND21L:
1154 1.1 christos /* This symbol requires a global offset table entry. */
1155 1.1 christos need_entry = NEED_GOT;
1156 1.1 christos break;
1157 1.1 christos
1158 1.1 christos case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1159 1.1 christos case R_PARISC_PLABEL21L:
1160 1.1 christos case R_PARISC_PLABEL32:
1161 1.1 christos /* If the addend is non-zero, we break badly. */
1162 1.1 christos if (rela->r_addend != 0)
1163 1.1 christos abort ();
1164 1.1 christos
1165 1.1 christos /* If we are creating a shared library, then we need to
1166 1.1 christos create a PLT entry for all PLABELs, because PLABELs with
1167 1.1 christos local symbols may be passed via a pointer to another
1168 1.1 christos object. Additionally, output a dynamic relocation
1169 1.1 christos pointing to the PLT entry.
1170 1.1 christos
1171 1.1 christos For executables, the original 32-bit ABI allowed two
1172 1.1 christos different styles of PLABELs (function pointers): For
1173 1.1 christos global functions, the PLABEL word points into the .plt
1174 1.1 christos two bytes past a (function address, gp) pair, and for
1175 1.1 christos local functions the PLABEL points directly at the
1176 1.1 christos function. The magic +2 for the first type allows us to
1177 1.1 christos differentiate between the two. As you can imagine, this
1178 1.1 christos is a real pain when it comes to generating code to call
1179 1.1 christos functions indirectly or to compare function pointers.
1180 1.1 christos We avoid the mess by always pointing a PLABEL into the
1181 1.1 christos .plt, even for local functions. */
1182 1.1.1.7 christos need_entry = PLT_PLABEL | NEED_PLT;
1183 1.1.1.7 christos if (bfd_link_pic (info))
1184 1.1.1.7 christos need_entry |= NEED_DYNREL;
1185 1.1 christos break;
1186 1.1 christos
1187 1.1 christos case R_PARISC_PCREL12F:
1188 1.1 christos htab->has_12bit_branch = 1;
1189 1.1 christos goto branch_common;
1190 1.1 christos
1191 1.1 christos case R_PARISC_PCREL17C:
1192 1.1 christos case R_PARISC_PCREL17F:
1193 1.1 christos htab->has_17bit_branch = 1;
1194 1.1 christos goto branch_common;
1195 1.1 christos
1196 1.1 christos case R_PARISC_PCREL22F:
1197 1.1 christos htab->has_22bit_branch = 1;
1198 1.1 christos branch_common:
1199 1.1 christos /* Function calls might need to go through the .plt, and
1200 1.1 christos might require long branch stubs. */
1201 1.1 christos if (hh == NULL)
1202 1.1 christos {
1203 1.1 christos /* We know local syms won't need a .plt entry, and if
1204 1.1 christos they need a long branch stub we can't guarantee that
1205 1.1 christos we can reach the stub. So just flag an error later
1206 1.1 christos if we're doing a shared link and find we need a long
1207 1.1 christos branch stub. */
1208 1.1 christos continue;
1209 1.1 christos }
1210 1.1 christos else
1211 1.1 christos {
1212 1.1 christos /* Global symbols will need a .plt entry if they remain
1213 1.1 christos global, and in most cases won't need a long branch
1214 1.1 christos stub. Unfortunately, we have to cater for the case
1215 1.1 christos where a symbol is forced local by versioning, or due
1216 1.1 christos to symbolic linking, and we lose the .plt entry. */
1217 1.1 christos need_entry = NEED_PLT;
1218 1.1 christos if (hh->eh.type == STT_PARISC_MILLI)
1219 1.1 christos need_entry = 0;
1220 1.1 christos }
1221 1.1 christos break;
1222 1.1 christos
1223 1.1 christos case R_PARISC_SEGBASE: /* Used to set segment base. */
1224 1.1 christos case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1225 1.1 christos case R_PARISC_PCREL14F: /* PC relative load/store. */
1226 1.1 christos case R_PARISC_PCREL14R:
1227 1.1 christos case R_PARISC_PCREL17R: /* External branches. */
1228 1.1 christos case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1229 1.1 christos case R_PARISC_PCREL32:
1230 1.1 christos /* We don't need to propagate the relocation if linking a
1231 1.1 christos shared object since these are section relative. */
1232 1.1 christos continue;
1233 1.1 christos
1234 1.1 christos case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1235 1.1 christos case R_PARISC_DPREL14R:
1236 1.1 christos case R_PARISC_DPREL21L:
1237 1.1.1.5 christos if (bfd_link_pic (info))
1238 1.1 christos {
1239 1.1.1.6 christos _bfd_error_handler
1240 1.1.1.6 christos /* xgettext:c-format */
1241 1.1.1.7 christos (_("%pB: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1242 1.1 christos abfd,
1243 1.1 christos elf_hppa_howto_table[r_type].name);
1244 1.1 christos bfd_set_error (bfd_error_bad_value);
1245 1.1 christos return FALSE;
1246 1.1 christos }
1247 1.1 christos /* Fall through. */
1248 1.1 christos
1249 1.1 christos case R_PARISC_DIR17F: /* Used for external branches. */
1250 1.1 christos case R_PARISC_DIR17R:
1251 1.1 christos case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1252 1.1 christos case R_PARISC_DIR14R:
1253 1.1 christos case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1254 1.1 christos case R_PARISC_DIR32: /* .word relocs. */
1255 1.1 christos /* We may want to output a dynamic relocation later. */
1256 1.1 christos need_entry = NEED_DYNREL;
1257 1.1 christos break;
1258 1.1 christos
1259 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
1260 1.1 christos Reconstruct it for later use during GC. */
1261 1.1 christos case R_PARISC_GNU_VTINHERIT:
1262 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
1263 1.1 christos return FALSE;
1264 1.1 christos continue;
1265 1.1 christos
1266 1.1 christos /* This relocation describes which C++ vtable entries are actually
1267 1.1 christos used. Record for later use during GC. */
1268 1.1 christos case R_PARISC_GNU_VTENTRY:
1269 1.1.1.8 christos if (!bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
1270 1.1 christos return FALSE;
1271 1.1 christos continue;
1272 1.1 christos
1273 1.1 christos case R_PARISC_TLS_GD21L:
1274 1.1 christos case R_PARISC_TLS_GD14R:
1275 1.1 christos case R_PARISC_TLS_LDM21L:
1276 1.1 christos case R_PARISC_TLS_LDM14R:
1277 1.1 christos need_entry = NEED_GOT;
1278 1.1 christos break;
1279 1.1 christos
1280 1.1 christos case R_PARISC_TLS_IE21L:
1281 1.1 christos case R_PARISC_TLS_IE14R:
1282 1.1.1.7 christos if (bfd_link_dll (info))
1283 1.1.1.7 christos info->flags |= DF_STATIC_TLS;
1284 1.1 christos need_entry = NEED_GOT;
1285 1.1 christos break;
1286 1.1 christos
1287 1.1 christos default:
1288 1.1 christos continue;
1289 1.1 christos }
1290 1.1 christos
1291 1.1 christos /* Now carry out our orders. */
1292 1.1 christos if (need_entry & NEED_GOT)
1293 1.1 christos {
1294 1.1.1.7 christos int tls_type = GOT_NORMAL;
1295 1.1.1.7 christos
1296 1.1 christos switch (r_type)
1297 1.1 christos {
1298 1.1 christos default:
1299 1.1 christos break;
1300 1.1 christos case R_PARISC_TLS_GD21L:
1301 1.1 christos case R_PARISC_TLS_GD14R:
1302 1.1.1.7 christos tls_type = GOT_TLS_GD;
1303 1.1 christos break;
1304 1.1 christos case R_PARISC_TLS_LDM21L:
1305 1.1 christos case R_PARISC_TLS_LDM14R:
1306 1.1.1.7 christos tls_type = GOT_TLS_LDM;
1307 1.1 christos break;
1308 1.1 christos case R_PARISC_TLS_IE21L:
1309 1.1 christos case R_PARISC_TLS_IE14R:
1310 1.1.1.7 christos tls_type = GOT_TLS_IE;
1311 1.1 christos break;
1312 1.1 christos }
1313 1.1 christos
1314 1.1 christos /* Allocate space for a GOT entry, as well as a dynamic
1315 1.1 christos relocation for this entry. */
1316 1.1.1.6 christos if (htab->etab.sgot == NULL)
1317 1.1 christos {
1318 1.1 christos if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
1319 1.1 christos return FALSE;
1320 1.1 christos }
1321 1.1 christos
1322 1.1.1.7 christos if (hh != NULL)
1323 1.1 christos {
1324 1.1.1.7 christos if (tls_type == GOT_TLS_LDM)
1325 1.1.1.7 christos htab->tls_ldm_got.refcount += 1;
1326 1.1 christos else
1327 1.1.1.7 christos hh->eh.got.refcount += 1;
1328 1.1.1.7 christos hh->tls_type |= tls_type;
1329 1.1.1.7 christos }
1330 1.1.1.7 christos else
1331 1.1.1.7 christos {
1332 1.1.1.7 christos bfd_signed_vma *local_got_refcounts;
1333 1.1 christos
1334 1.1.1.7 christos /* This is a global offset table entry for a local symbol. */
1335 1.1.1.7 christos local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1336 1.1.1.7 christos if (local_got_refcounts == NULL)
1337 1.1.1.7 christos return FALSE;
1338 1.1.1.7 christos if (tls_type == GOT_TLS_LDM)
1339 1.1.1.7 christos htab->tls_ldm_got.refcount += 1;
1340 1.1.1.7 christos else
1341 1.1.1.7 christos local_got_refcounts[r_symndx] += 1;
1342 1.1 christos
1343 1.1.1.7 christos hppa_elf_local_got_tls_type (abfd) [r_symndx] |= tls_type;
1344 1.1 christos }
1345 1.1 christos }
1346 1.1 christos
1347 1.1 christos if (need_entry & NEED_PLT)
1348 1.1 christos {
1349 1.1 christos /* If we are creating a shared library, and this is a reloc
1350 1.1 christos against a weak symbol or a global symbol in a dynamic
1351 1.1 christos object, then we will be creating an import stub and a
1352 1.1 christos .plt entry for the symbol. Similarly, on a normal link
1353 1.1 christos to symbols defined in a dynamic object we'll need the
1354 1.1 christos import stub and a .plt entry. We don't know yet whether
1355 1.1 christos the symbol is defined or not, so make an entry anyway and
1356 1.1 christos clean up later in adjust_dynamic_symbol. */
1357 1.1 christos if ((sec->flags & SEC_ALLOC) != 0)
1358 1.1 christos {
1359 1.1 christos if (hh != NULL)
1360 1.1 christos {
1361 1.1 christos hh->eh.needs_plt = 1;
1362 1.1 christos hh->eh.plt.refcount += 1;
1363 1.1 christos
1364 1.1 christos /* If this .plt entry is for a plabel, mark it so
1365 1.1 christos that adjust_dynamic_symbol will keep the entry
1366 1.1 christos even if it appears to be local. */
1367 1.1 christos if (need_entry & PLT_PLABEL)
1368 1.1 christos hh->plabel = 1;
1369 1.1 christos }
1370 1.1 christos else if (need_entry & PLT_PLABEL)
1371 1.1 christos {
1372 1.1 christos bfd_signed_vma *local_got_refcounts;
1373 1.1 christos bfd_signed_vma *local_plt_refcounts;
1374 1.1 christos
1375 1.1 christos local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1376 1.1 christos if (local_got_refcounts == NULL)
1377 1.1 christos return FALSE;
1378 1.1 christos local_plt_refcounts = (local_got_refcounts
1379 1.1 christos + symtab_hdr->sh_info);
1380 1.1 christos local_plt_refcounts[r_symndx] += 1;
1381 1.1 christos }
1382 1.1 christos }
1383 1.1 christos }
1384 1.1 christos
1385 1.1.1.7 christos if ((need_entry & NEED_DYNREL) != 0
1386 1.1.1.7 christos && (sec->flags & SEC_ALLOC) != 0)
1387 1.1 christos {
1388 1.1 christos /* Flag this symbol as having a non-got, non-plt reference
1389 1.1 christos so that we generate copy relocs if it turns out to be
1390 1.1 christos dynamic. */
1391 1.1.1.7 christos if (hh != NULL)
1392 1.1 christos hh->eh.non_got_ref = 1;
1393 1.1 christos
1394 1.1 christos /* If we are creating a shared library then we need to copy
1395 1.1 christos the reloc into the shared library. However, if we are
1396 1.1 christos linking with -Bsymbolic, we need only copy absolute
1397 1.1 christos relocs or relocs against symbols that are not defined in
1398 1.1 christos an object we are including in the link. PC- or DP- or
1399 1.1 christos DLT-relative relocs against any local sym or global sym
1400 1.1 christos with DEF_REGULAR set, can be discarded. At this point we
1401 1.1 christos have not seen all the input files, so it is possible that
1402 1.1 christos DEF_REGULAR is not set now but will be set later (it is
1403 1.1 christos never cleared). We account for that possibility below by
1404 1.1 christos storing information in the dyn_relocs field of the
1405 1.1 christos hash table entry.
1406 1.1 christos
1407 1.1 christos A similar situation to the -Bsymbolic case occurs when
1408 1.1 christos creating shared libraries and symbol visibility changes
1409 1.1 christos render the symbol local.
1410 1.1 christos
1411 1.1 christos As it turns out, all the relocs we will be creating here
1412 1.1 christos are absolute, so we cannot remove them on -Bsymbolic
1413 1.1 christos links or visibility changes anyway. A STUB_REL reloc
1414 1.1 christos is absolute too, as in that case it is the reloc in the
1415 1.1 christos stub we will be creating, rather than copying the PCREL
1416 1.1 christos reloc in the branch.
1417 1.1 christos
1418 1.1 christos If on the other hand, we are creating an executable, we
1419 1.1 christos may need to keep relocations for symbols satisfied by a
1420 1.1 christos dynamic library if we manage to avoid copy relocs for the
1421 1.1 christos symbol. */
1422 1.1.1.5 christos if ((bfd_link_pic (info)
1423 1.1 christos && (IS_ABSOLUTE_RELOC (r_type)
1424 1.1 christos || (hh != NULL
1425 1.1.1.5 christos && (!SYMBOLIC_BIND (info, &hh->eh)
1426 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak
1427 1.1 christos || !hh->eh.def_regular))))
1428 1.1 christos || (ELIMINATE_COPY_RELOCS
1429 1.1.1.5 christos && !bfd_link_pic (info)
1430 1.1 christos && hh != NULL
1431 1.1 christos && (hh->eh.root.type == bfd_link_hash_defweak
1432 1.1 christos || !hh->eh.def_regular)))
1433 1.1 christos {
1434 1.1.1.7 christos struct elf_dyn_relocs *hdh_p;
1435 1.1.1.7 christos struct elf_dyn_relocs **hdh_head;
1436 1.1 christos
1437 1.1 christos /* Create a reloc section in dynobj and make room for
1438 1.1 christos this reloc. */
1439 1.1 christos if (sreloc == NULL)
1440 1.1 christos {
1441 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
1442 1.1 christos (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
1443 1.1 christos
1444 1.1 christos if (sreloc == NULL)
1445 1.1 christos {
1446 1.1 christos bfd_set_error (bfd_error_bad_value);
1447 1.1 christos return FALSE;
1448 1.1 christos }
1449 1.1 christos }
1450 1.1 christos
1451 1.1 christos /* If this is a global symbol, we count the number of
1452 1.1 christos relocations we need for this symbol. */
1453 1.1 christos if (hh != NULL)
1454 1.1 christos {
1455 1.1.1.8 christos hdh_head = &hh->eh.dyn_relocs;
1456 1.1 christos }
1457 1.1 christos else
1458 1.1 christos {
1459 1.1 christos /* Track dynamic relocs needed for local syms too.
1460 1.1 christos We really need local syms available to do this
1461 1.1 christos easily. Oh well. */
1462 1.1 christos asection *sr;
1463 1.1 christos void *vpp;
1464 1.1 christos Elf_Internal_Sym *isym;
1465 1.1 christos
1466 1.1.1.8 christos isym = bfd_sym_from_r_symndx (&htab->etab.sym_cache,
1467 1.1 christos abfd, r_symndx);
1468 1.1 christos if (isym == NULL)
1469 1.1 christos return FALSE;
1470 1.1 christos
1471 1.1 christos sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
1472 1.1 christos if (sr == NULL)
1473 1.1 christos sr = sec;
1474 1.1 christos
1475 1.1 christos vpp = &elf_section_data (sr)->local_dynrel;
1476 1.1.1.7 christos hdh_head = (struct elf_dyn_relocs **) vpp;
1477 1.1 christos }
1478 1.1 christos
1479 1.1 christos hdh_p = *hdh_head;
1480 1.1 christos if (hdh_p == NULL || hdh_p->sec != sec)
1481 1.1 christos {
1482 1.1 christos hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
1483 1.1 christos if (hdh_p == NULL)
1484 1.1 christos return FALSE;
1485 1.1.1.7 christos hdh_p->next = *hdh_head;
1486 1.1 christos *hdh_head = hdh_p;
1487 1.1 christos hdh_p->sec = sec;
1488 1.1 christos hdh_p->count = 0;
1489 1.1 christos #if RELATIVE_DYNRELOCS
1490 1.1.1.7 christos hdh_p->pc_count = 0;
1491 1.1 christos #endif
1492 1.1 christos }
1493 1.1 christos
1494 1.1 christos hdh_p->count += 1;
1495 1.1 christos #if RELATIVE_DYNRELOCS
1496 1.1 christos if (!IS_ABSOLUTE_RELOC (rtype))
1497 1.1.1.7 christos hdh_p->pc_count += 1;
1498 1.1 christos #endif
1499 1.1 christos }
1500 1.1 christos }
1501 1.1 christos }
1502 1.1 christos
1503 1.1 christos return TRUE;
1504 1.1 christos }
1505 1.1 christos
1506 1.1 christos /* Return the section that should be marked against garbage collection
1507 1.1 christos for a given relocation. */
1508 1.1 christos
1509 1.1 christos static asection *
1510 1.1 christos elf32_hppa_gc_mark_hook (asection *sec,
1511 1.1 christos struct bfd_link_info *info,
1512 1.1 christos Elf_Internal_Rela *rela,
1513 1.1 christos struct elf_link_hash_entry *hh,
1514 1.1 christos Elf_Internal_Sym *sym)
1515 1.1 christos {
1516 1.1 christos if (hh != NULL)
1517 1.1 christos switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
1518 1.1 christos {
1519 1.1 christos case R_PARISC_GNU_VTINHERIT:
1520 1.1 christos case R_PARISC_GNU_VTENTRY:
1521 1.1 christos return NULL;
1522 1.1 christos }
1523 1.1 christos
1524 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
1525 1.1 christos }
1526 1.1 christos
1527 1.1 christos /* Support for core dump NOTE sections. */
1528 1.1 christos
1529 1.1 christos static bfd_boolean
1530 1.1 christos elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1531 1.1 christos {
1532 1.1 christos int offset;
1533 1.1 christos size_t size;
1534 1.1 christos
1535 1.1 christos switch (note->descsz)
1536 1.1 christos {
1537 1.1 christos default:
1538 1.1 christos return FALSE;
1539 1.1 christos
1540 1.1 christos case 396: /* Linux/hppa */
1541 1.1 christos /* pr_cursig */
1542 1.1.1.2 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1543 1.1 christos
1544 1.1 christos /* pr_pid */
1545 1.1.1.2 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1546 1.1 christos
1547 1.1 christos /* pr_reg */
1548 1.1 christos offset = 72;
1549 1.1 christos size = 320;
1550 1.1 christos
1551 1.1 christos break;
1552 1.1 christos }
1553 1.1 christos
1554 1.1 christos /* Make a ".reg/999" section. */
1555 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1556 1.1 christos size, note->descpos + offset);
1557 1.1 christos }
1558 1.1 christos
1559 1.1 christos static bfd_boolean
1560 1.1 christos elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1561 1.1 christos {
1562 1.1 christos switch (note->descsz)
1563 1.1 christos {
1564 1.1 christos default:
1565 1.1 christos return FALSE;
1566 1.1 christos
1567 1.1 christos case 124: /* Linux/hppa elf_prpsinfo. */
1568 1.1.1.2 christos elf_tdata (abfd)->core->program
1569 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1570 1.1.1.2 christos elf_tdata (abfd)->core->command
1571 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1572 1.1 christos }
1573 1.1 christos
1574 1.1 christos /* Note that for some reason, a spurious space is tacked
1575 1.1 christos onto the end of the args in some (at least one anyway)
1576 1.1 christos implementations, so strip it off if it exists. */
1577 1.1 christos {
1578 1.1.1.2 christos char *command = elf_tdata (abfd)->core->command;
1579 1.1 christos int n = strlen (command);
1580 1.1 christos
1581 1.1 christos if (0 < n && command[n - 1] == ' ')
1582 1.1 christos command[n - 1] = '\0';
1583 1.1 christos }
1584 1.1 christos
1585 1.1 christos return TRUE;
1586 1.1 christos }
1587 1.1 christos
1588 1.1 christos /* Our own version of hide_symbol, so that we can keep plt entries for
1589 1.1 christos plabels. */
1590 1.1 christos
1591 1.1 christos static void
1592 1.1 christos elf32_hppa_hide_symbol (struct bfd_link_info *info,
1593 1.1 christos struct elf_link_hash_entry *eh,
1594 1.1 christos bfd_boolean force_local)
1595 1.1 christos {
1596 1.1 christos if (force_local)
1597 1.1 christos {
1598 1.1 christos eh->forced_local = 1;
1599 1.1 christos if (eh->dynindx != -1)
1600 1.1 christos {
1601 1.1 christos eh->dynindx = -1;
1602 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1603 1.1 christos eh->dynstr_index);
1604 1.1 christos }
1605 1.1.1.3 christos
1606 1.1.1.3 christos /* PR 16082: Remove version information from hidden symbol. */
1607 1.1.1.3 christos eh->verinfo.verdef = NULL;
1608 1.1.1.3 christos eh->verinfo.vertree = NULL;
1609 1.1 christos }
1610 1.1 christos
1611 1.1.1.2 christos /* STT_GNU_IFUNC symbol must go through PLT. */
1612 1.1.1.2 christos if (! hppa_elf_hash_entry (eh)->plabel
1613 1.1.1.2 christos && eh->type != STT_GNU_IFUNC)
1614 1.1 christos {
1615 1.1 christos eh->needs_plt = 0;
1616 1.1.1.2 christos eh->plt = elf_hash_table (info)->init_plt_offset;
1617 1.1 christos }
1618 1.1 christos }
1619 1.1 christos
1620 1.1.1.7 christos /* Return true if we have dynamic relocs against H or any of its weak
1621 1.1.1.7 christos aliases, that apply to read-only sections. Cannot be used after
1622 1.1.1.7 christos size_dynamic_sections. */
1623 1.1.1.7 christos
1624 1.1.1.7 christos static bfd_boolean
1625 1.1.1.7 christos alias_readonly_dynrelocs (struct elf_link_hash_entry *eh)
1626 1.1.1.7 christos {
1627 1.1.1.7 christos struct elf32_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh);
1628 1.1.1.7 christos do
1629 1.1.1.7 christos {
1630 1.1.1.8 christos if (_bfd_elf_readonly_dynrelocs (&hh->eh))
1631 1.1.1.7 christos return TRUE;
1632 1.1.1.7 christos hh = hppa_elf_hash_entry (hh->eh.u.alias);
1633 1.1.1.7 christos } while (hh != NULL && &hh->eh != eh);
1634 1.1.1.7 christos
1635 1.1.1.7 christos return FALSE;
1636 1.1.1.7 christos }
1637 1.1.1.7 christos
1638 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
1639 1.1 christos regular object. The current definition is in some section of the
1640 1.1 christos dynamic object, but we're not including those sections. We have to
1641 1.1 christos change the definition to something the rest of the link can
1642 1.1 christos understand. */
1643 1.1 christos
1644 1.1 christos static bfd_boolean
1645 1.1 christos elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1646 1.1 christos struct elf_link_hash_entry *eh)
1647 1.1 christos {
1648 1.1 christos struct elf32_hppa_link_hash_table *htab;
1649 1.1.1.6 christos asection *sec, *srel;
1650 1.1 christos
1651 1.1 christos /* If this is a function, put it in the procedure linkage table. We
1652 1.1 christos will fill in the contents of the procedure linkage table later. */
1653 1.1 christos if (eh->type == STT_FUNC
1654 1.1 christos || eh->needs_plt)
1655 1.1 christos {
1656 1.1.1.7 christos bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, eh)
1657 1.1.1.7 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh));
1658 1.1.1.7 christos /* Discard dyn_relocs when non-pic if we've decided that a
1659 1.1.1.7 christos function symbol is local. */
1660 1.1.1.7 christos if (!bfd_link_pic (info) && local)
1661 1.1.1.8 christos eh->dyn_relocs = NULL;
1662 1.1.1.7 christos
1663 1.1.1.2 christos /* If the symbol is used by a plabel, we must allocate a PLT slot.
1664 1.1.1.2 christos The refcounts are not reliable when it has been hidden since
1665 1.1.1.2 christos hide_symbol can be called before the plabel flag is set. */
1666 1.1.1.7 christos if (hppa_elf_hash_entry (eh)->plabel)
1667 1.1.1.2 christos eh->plt.refcount = 1;
1668 1.1.1.2 christos
1669 1.1.1.7 christos /* Note that unlike some other backends, the refcount is not
1670 1.1.1.7 christos incremented for a non-call (and non-plabel) function reference. */
1671 1.1.1.7 christos else if (eh->plt.refcount <= 0
1672 1.1.1.7 christos || local)
1673 1.1 christos {
1674 1.1 christos /* The .plt entry is not needed when:
1675 1.1 christos a) Garbage collection has removed all references to the
1676 1.1 christos symbol, or
1677 1.1 christos b) We know for certain the symbol is defined in this
1678 1.1 christos object, and it's not a weak definition, nor is the symbol
1679 1.1 christos used by a plabel relocation. Either this object is the
1680 1.1 christos application or we are doing a shared symbolic link. */
1681 1.1 christos eh->plt.offset = (bfd_vma) -1;
1682 1.1 christos eh->needs_plt = 0;
1683 1.1 christos }
1684 1.1 christos
1685 1.1.1.7 christos /* Unlike other targets, elf32-hppa.c does not define a function
1686 1.1.1.7 christos symbol in a non-pic executable on PLT stub code, so we don't
1687 1.1.1.7 christos have a local definition in that case. ie. dyn_relocs can't
1688 1.1.1.7 christos be discarded. */
1689 1.1.1.7 christos
1690 1.1.1.7 christos /* Function symbols can't have copy relocs. */
1691 1.1 christos return TRUE;
1692 1.1 christos }
1693 1.1 christos else
1694 1.1 christos eh->plt.offset = (bfd_vma) -1;
1695 1.1 christos
1696 1.1.1.7 christos htab = hppa_link_hash_table (info);
1697 1.1.1.7 christos if (htab == NULL)
1698 1.1.1.7 christos return FALSE;
1699 1.1.1.7 christos
1700 1.1 christos /* If this is a weak symbol, and there is a real definition, the
1701 1.1 christos processor independent code will have arranged for us to see the
1702 1.1 christos real definition first, and we can just use the same value. */
1703 1.1.1.7 christos if (eh->is_weakalias)
1704 1.1 christos {
1705 1.1.1.7 christos struct elf_link_hash_entry *def = weakdef (eh);
1706 1.1.1.7 christos BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1707 1.1.1.7 christos eh->root.u.def.section = def->root.u.def.section;
1708 1.1.1.7 christos eh->root.u.def.value = def->root.u.def.value;
1709 1.1.1.7 christos if (def->root.u.def.section == htab->etab.sdynbss
1710 1.1.1.7 christos || def->root.u.def.section == htab->etab.sdynrelro)
1711 1.1.1.8 christos eh->dyn_relocs = NULL;
1712 1.1 christos return TRUE;
1713 1.1 christos }
1714 1.1 christos
1715 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
1716 1.1 christos is not a function. */
1717 1.1 christos
1718 1.1 christos /* If we are creating a shared library, we must presume that the
1719 1.1 christos only references to the symbol are via the global offset table.
1720 1.1 christos For such cases we need not do anything here; the relocations will
1721 1.1 christos be handled correctly by relocate_section. */
1722 1.1.1.5 christos if (bfd_link_pic (info))
1723 1.1 christos return TRUE;
1724 1.1 christos
1725 1.1 christos /* If there are no references to this symbol that do not use the
1726 1.1 christos GOT, we don't need to generate a copy reloc. */
1727 1.1 christos if (!eh->non_got_ref)
1728 1.1 christos return TRUE;
1729 1.1 christos
1730 1.1.1.7 christos /* If -z nocopyreloc was given, we won't generate them either. */
1731 1.1.1.7 christos if (info->nocopyreloc)
1732 1.1.1.7 christos return TRUE;
1733 1.1 christos
1734 1.1.1.7 christos /* If we don't find any dynamic relocs in read-only sections, then
1735 1.1.1.7 christos we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1736 1.1.1.7 christos if (ELIMINATE_COPY_RELOCS
1737 1.1.1.7 christos && !alias_readonly_dynrelocs (eh))
1738 1.1.1.7 christos return TRUE;
1739 1.1 christos
1740 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
1741 1.1 christos become part of the .bss section of the executable. There will be
1742 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
1743 1.1 christos object will contain position independent code, so all references
1744 1.1 christos from the dynamic object to this symbol will go through the global
1745 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
1746 1.1 christos determine the address it must put in the global offset table, so
1747 1.1 christos both the dynamic object and the regular object will refer to the
1748 1.1 christos same memory location for the variable. */
1749 1.1.1.6 christos if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
1750 1.1.1.6 christos {
1751 1.1.1.6 christos sec = htab->etab.sdynrelro;
1752 1.1.1.6 christos srel = htab->etab.sreldynrelro;
1753 1.1.1.6 christos }
1754 1.1.1.6 christos else
1755 1.1.1.6 christos {
1756 1.1.1.6 christos sec = htab->etab.sdynbss;
1757 1.1.1.6 christos srel = htab->etab.srelbss;
1758 1.1.1.6 christos }
1759 1.1.1.2 christos if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1760 1.1 christos {
1761 1.1.1.7 christos /* We must generate a COPY reloc to tell the dynamic linker to
1762 1.1.1.7 christos copy the initial value out of the dynamic object and into the
1763 1.1.1.7 christos runtime process image. */
1764 1.1.1.6 christos srel->size += sizeof (Elf32_External_Rela);
1765 1.1 christos eh->needs_copy = 1;
1766 1.1 christos }
1767 1.1 christos
1768 1.1.1.7 christos /* We no longer want dyn_relocs. */
1769 1.1.1.8 christos eh->dyn_relocs = NULL;
1770 1.1.1.4 christos return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1771 1.1 christos }
1772 1.1 christos
1773 1.1.1.7 christos /* If EH is undefined, make it dynamic if that makes sense. */
1774 1.1.1.6 christos
1775 1.1.1.6 christos static bfd_boolean
1776 1.1.1.7 christos ensure_undef_dynamic (struct bfd_link_info *info,
1777 1.1.1.7 christos struct elf_link_hash_entry *eh)
1778 1.1.1.6 christos {
1779 1.1.1.7 christos struct elf_link_hash_table *htab = elf_hash_table (info);
1780 1.1.1.7 christos
1781 1.1.1.7 christos if (htab->dynamic_sections_created
1782 1.1.1.7 christos && (eh->root.type == bfd_link_hash_undefweak
1783 1.1.1.7 christos || eh->root.type == bfd_link_hash_undefined)
1784 1.1.1.7 christos && eh->dynindx == -1
1785 1.1.1.6 christos && !eh->forced_local
1786 1.1.1.6 christos && eh->type != STT_PARISC_MILLI
1787 1.1.1.7 christos && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)
1788 1.1.1.6 christos && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
1789 1.1.1.6 christos return bfd_elf_link_record_dynamic_symbol (info, eh);
1790 1.1.1.6 christos return TRUE;
1791 1.1.1.6 christos }
1792 1.1.1.6 christos
1793 1.1 christos /* Allocate space in the .plt for entries that won't have relocations.
1794 1.1 christos ie. plabel entries. */
1795 1.1 christos
1796 1.1 christos static bfd_boolean
1797 1.1 christos allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1798 1.1 christos {
1799 1.1 christos struct bfd_link_info *info;
1800 1.1 christos struct elf32_hppa_link_hash_table *htab;
1801 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1802 1.1 christos asection *sec;
1803 1.1 christos
1804 1.1 christos if (eh->root.type == bfd_link_hash_indirect)
1805 1.1 christos return TRUE;
1806 1.1 christos
1807 1.1 christos info = (struct bfd_link_info *) inf;
1808 1.1 christos hh = hppa_elf_hash_entry (eh);
1809 1.1 christos htab = hppa_link_hash_table (info);
1810 1.1 christos if (htab == NULL)
1811 1.1 christos return FALSE;
1812 1.1 christos
1813 1.1 christos if (htab->etab.dynamic_sections_created
1814 1.1 christos && eh->plt.refcount > 0)
1815 1.1 christos {
1816 1.1.1.7 christos if (!ensure_undef_dynamic (info, eh))
1817 1.1.1.6 christos return FALSE;
1818 1.1 christos
1819 1.1.1.5 christos if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1820 1.1 christos {
1821 1.1 christos /* Allocate these later. From this point on, h->plabel
1822 1.1 christos means that the plt entry is only used by a plabel.
1823 1.1 christos We'll be using a normal plt entry for this symbol, so
1824 1.1 christos clear the plabel indicator. */
1825 1.1.1.2 christos
1826 1.1 christos hh->plabel = 0;
1827 1.1 christos }
1828 1.1 christos else if (hh->plabel)
1829 1.1 christos {
1830 1.1 christos /* Make an entry in the .plt section for plabel references
1831 1.1 christos that won't have a .plt entry for other reasons. */
1832 1.1.1.6 christos sec = htab->etab.splt;
1833 1.1 christos eh->plt.offset = sec->size;
1834 1.1 christos sec->size += PLT_ENTRY_SIZE;
1835 1.1.1.6 christos if (bfd_link_pic (info))
1836 1.1.1.6 christos htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1837 1.1 christos }
1838 1.1 christos else
1839 1.1 christos {
1840 1.1 christos /* No .plt entry needed. */
1841 1.1 christos eh->plt.offset = (bfd_vma) -1;
1842 1.1 christos eh->needs_plt = 0;
1843 1.1 christos }
1844 1.1 christos }
1845 1.1 christos else
1846 1.1 christos {
1847 1.1 christos eh->plt.offset = (bfd_vma) -1;
1848 1.1 christos eh->needs_plt = 0;
1849 1.1 christos }
1850 1.1 christos
1851 1.1 christos return TRUE;
1852 1.1 christos }
1853 1.1 christos
1854 1.1.1.7 christos /* Calculate size of GOT entries for symbol given its TLS_TYPE. */
1855 1.1.1.7 christos
1856 1.1.1.7 christos static inline unsigned int
1857 1.1.1.7 christos got_entries_needed (int tls_type)
1858 1.1.1.7 christos {
1859 1.1.1.7 christos unsigned int need = 0;
1860 1.1.1.7 christos
1861 1.1.1.7 christos if ((tls_type & GOT_NORMAL) != 0)
1862 1.1.1.7 christos need += GOT_ENTRY_SIZE;
1863 1.1.1.7 christos if ((tls_type & GOT_TLS_GD) != 0)
1864 1.1.1.7 christos need += GOT_ENTRY_SIZE * 2;
1865 1.1.1.7 christos if ((tls_type & GOT_TLS_IE) != 0)
1866 1.1.1.7 christos need += GOT_ENTRY_SIZE;
1867 1.1.1.7 christos return need;
1868 1.1.1.7 christos }
1869 1.1.1.7 christos
1870 1.1.1.7 christos /* Calculate size of relocs needed for symbol given its TLS_TYPE and
1871 1.1.1.7 christos NEEDed GOT entries. TPREL_KNOWN says a TPREL offset can be
1872 1.1.1.7 christos calculated at link time. DTPREL_KNOWN says the same for a DTPREL
1873 1.1.1.7 christos offset. */
1874 1.1.1.7 christos
1875 1.1.1.7 christos static inline unsigned int
1876 1.1.1.7 christos got_relocs_needed (int tls_type, unsigned int need,
1877 1.1.1.7 christos bfd_boolean dtprel_known, bfd_boolean tprel_known)
1878 1.1.1.7 christos {
1879 1.1.1.7 christos /* All the entries we allocated need relocs.
1880 1.1.1.7 christos Except for GD and IE with local symbols. */
1881 1.1.1.7 christos if ((tls_type & GOT_TLS_GD) != 0 && dtprel_known)
1882 1.1.1.7 christos need -= GOT_ENTRY_SIZE;
1883 1.1.1.7 christos if ((tls_type & GOT_TLS_IE) != 0 && tprel_known)
1884 1.1.1.7 christos need -= GOT_ENTRY_SIZE;
1885 1.1.1.7 christos return need * sizeof (Elf32_External_Rela) / GOT_ENTRY_SIZE;
1886 1.1.1.7 christos }
1887 1.1.1.7 christos
1888 1.1 christos /* Allocate space in .plt, .got and associated reloc sections for
1889 1.1 christos global syms. */
1890 1.1 christos
1891 1.1 christos static bfd_boolean
1892 1.1 christos allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
1893 1.1 christos {
1894 1.1 christos struct bfd_link_info *info;
1895 1.1 christos struct elf32_hppa_link_hash_table *htab;
1896 1.1 christos asection *sec;
1897 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1898 1.1.1.7 christos struct elf_dyn_relocs *hdh_p;
1899 1.1 christos
1900 1.1 christos if (eh->root.type == bfd_link_hash_indirect)
1901 1.1 christos return TRUE;
1902 1.1 christos
1903 1.1 christos info = inf;
1904 1.1 christos htab = hppa_link_hash_table (info);
1905 1.1 christos if (htab == NULL)
1906 1.1 christos return FALSE;
1907 1.1 christos
1908 1.1 christos hh = hppa_elf_hash_entry (eh);
1909 1.1.1.2 christos
1910 1.1 christos if (htab->etab.dynamic_sections_created
1911 1.1 christos && eh->plt.offset != (bfd_vma) -1
1912 1.1 christos && !hh->plabel
1913 1.1 christos && eh->plt.refcount > 0)
1914 1.1 christos {
1915 1.1 christos /* Make an entry in the .plt section. */
1916 1.1.1.6 christos sec = htab->etab.splt;
1917 1.1 christos eh->plt.offset = sec->size;
1918 1.1 christos sec->size += PLT_ENTRY_SIZE;
1919 1.1 christos
1920 1.1 christos /* We also need to make an entry in the .rela.plt section. */
1921 1.1.1.6 christos htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1922 1.1 christos htab->need_plt_stub = 1;
1923 1.1 christos }
1924 1.1 christos
1925 1.1 christos if (eh->got.refcount > 0)
1926 1.1 christos {
1927 1.1.1.7 christos unsigned int need;
1928 1.1.1.7 christos
1929 1.1.1.7 christos if (!ensure_undef_dynamic (info, eh))
1930 1.1.1.6 christos return FALSE;
1931 1.1 christos
1932 1.1.1.6 christos sec = htab->etab.sgot;
1933 1.1 christos eh->got.offset = sec->size;
1934 1.1.1.7 christos need = got_entries_needed (hh->tls_type);
1935 1.1.1.7 christos sec->size += need;
1936 1.1 christos if (htab->etab.dynamic_sections_created
1937 1.1.1.7 christos && (bfd_link_dll (info)
1938 1.1.1.7 christos || (bfd_link_pic (info) && (hh->tls_type & GOT_NORMAL) != 0)
1939 1.1 christos || (eh->dynindx != -1
1940 1.1.1.7 christos && !SYMBOL_REFERENCES_LOCAL (info, eh)))
1941 1.1.1.7 christos && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
1942 1.1 christos {
1943 1.1.1.7 christos bfd_boolean local = SYMBOL_REFERENCES_LOCAL (info, eh);
1944 1.1.1.7 christos htab->etab.srelgot->size
1945 1.1.1.7 christos += got_relocs_needed (hh->tls_type, need, local,
1946 1.1.1.7 christos local && bfd_link_executable (info));
1947 1.1 christos }
1948 1.1 christos }
1949 1.1 christos else
1950 1.1 christos eh->got.offset = (bfd_vma) -1;
1951 1.1 christos
1952 1.1.1.7 christos /* If no dynamic sections we can't have dynamic relocs. */
1953 1.1.1.7 christos if (!htab->etab.dynamic_sections_created)
1954 1.1.1.8 christos eh->dyn_relocs = NULL;
1955 1.1.1.7 christos
1956 1.1.1.7 christos /* Discard relocs on undefined syms with non-default visibility. */
1957 1.1.1.7 christos else if ((eh->root.type == bfd_link_hash_undefined
1958 1.1.1.7 christos && ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
1959 1.1.1.7 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
1960 1.1.1.8 christos eh->dyn_relocs = NULL;
1961 1.1.1.7 christos
1962 1.1.1.8 christos if (eh->dyn_relocs == NULL)
1963 1.1 christos return TRUE;
1964 1.1 christos
1965 1.1 christos /* If this is a -Bsymbolic shared link, then we need to discard all
1966 1.1 christos space allocated for dynamic pc-relative relocs against symbols
1967 1.1 christos defined in a regular object. For the normal shared case, discard
1968 1.1 christos space for relocs that have become local due to symbol visibility
1969 1.1 christos changes. */
1970 1.1.1.5 christos if (bfd_link_pic (info))
1971 1.1 christos {
1972 1.1 christos #if RELATIVE_DYNRELOCS
1973 1.1 christos if (SYMBOL_CALLS_LOCAL (info, eh))
1974 1.1 christos {
1975 1.1.1.7 christos struct elf_dyn_relocs **hdh_pp;
1976 1.1 christos
1977 1.1.1.8 christos for (hdh_pp = &eh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1978 1.1 christos {
1979 1.1.1.7 christos hdh_p->count -= hdh_p->pc_count;
1980 1.1.1.7 christos hdh_p->pc_count = 0;
1981 1.1 christos if (hdh_p->count == 0)
1982 1.1.1.7 christos *hdh_pp = hdh_p->next;
1983 1.1 christos else
1984 1.1.1.7 christos hdh_pp = &hdh_p->next;
1985 1.1 christos }
1986 1.1 christos }
1987 1.1 christos #endif
1988 1.1 christos
1989 1.1.1.8 christos if (eh->dyn_relocs != NULL)
1990 1.1 christos {
1991 1.1.1.7 christos if (!ensure_undef_dynamic (info, eh))
1992 1.1.1.6 christos return FALSE;
1993 1.1 christos }
1994 1.1 christos }
1995 1.1.1.7 christos else if (ELIMINATE_COPY_RELOCS)
1996 1.1 christos {
1997 1.1 christos /* For the non-shared case, discard space for relocs against
1998 1.1 christos symbols which turn out to need copy relocs or are not
1999 1.1 christos dynamic. */
2000 1.1.1.2 christos
2001 1.1.1.7 christos if (eh->dynamic_adjusted
2002 1.1.1.7 christos && !eh->def_regular
2003 1.1.1.7 christos && !ELF_COMMON_DEF_P (eh))
2004 1.1 christos {
2005 1.1.1.7 christos if (!ensure_undef_dynamic (info, eh))
2006 1.1.1.6 christos return FALSE;
2007 1.1 christos
2008 1.1.1.7 christos if (eh->dynindx == -1)
2009 1.1.1.8 christos eh->dyn_relocs = NULL;
2010 1.1 christos }
2011 1.1.1.7 christos else
2012 1.1.1.8 christos eh->dyn_relocs = NULL;
2013 1.1 christos }
2014 1.1 christos
2015 1.1 christos /* Finally, allocate space. */
2016 1.1.1.8 christos for (hdh_p = eh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->next)
2017 1.1 christos {
2018 1.1 christos asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2019 1.1 christos sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2020 1.1 christos }
2021 1.1 christos
2022 1.1 christos return TRUE;
2023 1.1 christos }
2024 1.1 christos
2025 1.1 christos /* This function is called via elf_link_hash_traverse to force
2026 1.1 christos millicode symbols local so they do not end up as globals in the
2027 1.1 christos dynamic symbol table. We ought to be able to do this in
2028 1.1 christos adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2029 1.1 christos for all dynamic symbols. Arguably, this is a bug in
2030 1.1 christos elf_adjust_dynamic_symbol. */
2031 1.1 christos
2032 1.1 christos static bfd_boolean
2033 1.1 christos clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2034 1.1 christos struct bfd_link_info *info)
2035 1.1 christos {
2036 1.1 christos if (eh->type == STT_PARISC_MILLI
2037 1.1 christos && !eh->forced_local)
2038 1.1 christos {
2039 1.1 christos elf32_hppa_hide_symbol (info, eh, TRUE);
2040 1.1 christos }
2041 1.1 christos return TRUE;
2042 1.1 christos }
2043 1.1 christos
2044 1.1 christos /* Set the sizes of the dynamic sections. */
2045 1.1 christos
2046 1.1 christos static bfd_boolean
2047 1.1 christos elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2048 1.1 christos struct bfd_link_info *info)
2049 1.1 christos {
2050 1.1 christos struct elf32_hppa_link_hash_table *htab;
2051 1.1 christos bfd *dynobj;
2052 1.1 christos bfd *ibfd;
2053 1.1 christos asection *sec;
2054 1.1 christos bfd_boolean relocs;
2055 1.1 christos
2056 1.1 christos htab = hppa_link_hash_table (info);
2057 1.1 christos if (htab == NULL)
2058 1.1 christos return FALSE;
2059 1.1 christos
2060 1.1 christos dynobj = htab->etab.dynobj;
2061 1.1 christos if (dynobj == NULL)
2062 1.1 christos abort ();
2063 1.1 christos
2064 1.1 christos if (htab->etab.dynamic_sections_created)
2065 1.1 christos {
2066 1.1 christos /* Set the contents of the .interp section to the interpreter. */
2067 1.1.1.5 christos if (bfd_link_executable (info) && !info->nointerp)
2068 1.1 christos {
2069 1.1.1.2 christos sec = bfd_get_linker_section (dynobj, ".interp");
2070 1.1 christos if (sec == NULL)
2071 1.1 christos abort ();
2072 1.1 christos sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2073 1.1 christos sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2074 1.1 christos }
2075 1.1 christos
2076 1.1 christos /* Force millicode symbols local. */
2077 1.1 christos elf_link_hash_traverse (&htab->etab,
2078 1.1 christos clobber_millicode_symbols,
2079 1.1 christos info);
2080 1.1 christos }
2081 1.1 christos
2082 1.1 christos /* Set up .got and .plt offsets for local syms, and space for local
2083 1.1 christos dynamic relocs. */
2084 1.1.1.4 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2085 1.1 christos {
2086 1.1 christos bfd_signed_vma *local_got;
2087 1.1 christos bfd_signed_vma *end_local_got;
2088 1.1 christos bfd_signed_vma *local_plt;
2089 1.1 christos bfd_signed_vma *end_local_plt;
2090 1.1 christos bfd_size_type locsymcount;
2091 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2092 1.1 christos asection *srel;
2093 1.1 christos char *local_tls_type;
2094 1.1 christos
2095 1.1 christos if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2096 1.1 christos continue;
2097 1.1 christos
2098 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2099 1.1 christos {
2100 1.1.1.7 christos struct elf_dyn_relocs *hdh_p;
2101 1.1 christos
2102 1.1.1.7 christos for (hdh_p = ((struct elf_dyn_relocs *)
2103 1.1 christos elf_section_data (sec)->local_dynrel);
2104 1.1 christos hdh_p != NULL;
2105 1.1.1.7 christos hdh_p = hdh_p->next)
2106 1.1 christos {
2107 1.1 christos if (!bfd_is_abs_section (hdh_p->sec)
2108 1.1 christos && bfd_is_abs_section (hdh_p->sec->output_section))
2109 1.1 christos {
2110 1.1 christos /* Input section has been discarded, either because
2111 1.1 christos it is a copy of a linkonce section or due to
2112 1.1 christos linker script /DISCARD/, so we'll be discarding
2113 1.1 christos the relocs too. */
2114 1.1 christos }
2115 1.1 christos else if (hdh_p->count != 0)
2116 1.1 christos {
2117 1.1 christos srel = elf_section_data (hdh_p->sec)->sreloc;
2118 1.1 christos srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2119 1.1 christos if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2120 1.1 christos info->flags |= DF_TEXTREL;
2121 1.1 christos }
2122 1.1 christos }
2123 1.1 christos }
2124 1.1 christos
2125 1.1 christos local_got = elf_local_got_refcounts (ibfd);
2126 1.1 christos if (!local_got)
2127 1.1 christos continue;
2128 1.1 christos
2129 1.1 christos symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2130 1.1 christos locsymcount = symtab_hdr->sh_info;
2131 1.1 christos end_local_got = local_got + locsymcount;
2132 1.1 christos local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2133 1.1.1.6 christos sec = htab->etab.sgot;
2134 1.1.1.6 christos srel = htab->etab.srelgot;
2135 1.1 christos for (; local_got < end_local_got; ++local_got)
2136 1.1 christos {
2137 1.1 christos if (*local_got > 0)
2138 1.1 christos {
2139 1.1.1.7 christos unsigned int need;
2140 1.1.1.7 christos
2141 1.1 christos *local_got = sec->size;
2142 1.1.1.7 christos need = got_entries_needed (*local_tls_type);
2143 1.1.1.7 christos sec->size += need;
2144 1.1.1.7 christos if (bfd_link_dll (info)
2145 1.1.1.7 christos || (bfd_link_pic (info)
2146 1.1.1.7 christos && (*local_tls_type & GOT_NORMAL) != 0))
2147 1.1.1.7 christos htab->etab.srelgot->size
2148 1.1.1.7 christos += got_relocs_needed (*local_tls_type, need, TRUE,
2149 1.1.1.7 christos bfd_link_executable (info));
2150 1.1 christos }
2151 1.1 christos else
2152 1.1 christos *local_got = (bfd_vma) -1;
2153 1.1 christos
2154 1.1 christos ++local_tls_type;
2155 1.1 christos }
2156 1.1 christos
2157 1.1 christos local_plt = end_local_got;
2158 1.1 christos end_local_plt = local_plt + locsymcount;
2159 1.1 christos if (! htab->etab.dynamic_sections_created)
2160 1.1 christos {
2161 1.1 christos /* Won't be used, but be safe. */
2162 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
2163 1.1 christos *local_plt = (bfd_vma) -1;
2164 1.1 christos }
2165 1.1 christos else
2166 1.1 christos {
2167 1.1.1.6 christos sec = htab->etab.splt;
2168 1.1.1.6 christos srel = htab->etab.srelplt;
2169 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
2170 1.1 christos {
2171 1.1 christos if (*local_plt > 0)
2172 1.1 christos {
2173 1.1 christos *local_plt = sec->size;
2174 1.1 christos sec->size += PLT_ENTRY_SIZE;
2175 1.1.1.5 christos if (bfd_link_pic (info))
2176 1.1 christos srel->size += sizeof (Elf32_External_Rela);
2177 1.1 christos }
2178 1.1 christos else
2179 1.1 christos *local_plt = (bfd_vma) -1;
2180 1.1 christos }
2181 1.1 christos }
2182 1.1 christos }
2183 1.1.1.2 christos
2184 1.1 christos if (htab->tls_ldm_got.refcount > 0)
2185 1.1 christos {
2186 1.1.1.2 christos /* Allocate 2 got entries and 1 dynamic reloc for
2187 1.1.1.7 christos R_PARISC_TLS_DTPMOD32 relocs. */
2188 1.1.1.6 christos htab->tls_ldm_got.offset = htab->etab.sgot->size;
2189 1.1.1.6 christos htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2190 1.1.1.6 christos htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2191 1.1 christos }
2192 1.1 christos else
2193 1.1 christos htab->tls_ldm_got.offset = -1;
2194 1.1 christos
2195 1.1 christos /* Do all the .plt entries without relocs first. The dynamic linker
2196 1.1 christos uses the last .plt reloc to find the end of the .plt (and hence
2197 1.1 christos the start of the .got) for lazy linking. */
2198 1.1 christos elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2199 1.1 christos
2200 1.1 christos /* Allocate global sym .plt and .got entries, and space for global
2201 1.1 christos sym dynamic relocs. */
2202 1.1 christos elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2203 1.1 christos
2204 1.1 christos /* The check_relocs and adjust_dynamic_symbol entry points have
2205 1.1 christos determined the sizes of the various dynamic sections. Allocate
2206 1.1 christos memory for them. */
2207 1.1 christos relocs = FALSE;
2208 1.1 christos for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2209 1.1 christos {
2210 1.1 christos if ((sec->flags & SEC_LINKER_CREATED) == 0)
2211 1.1 christos continue;
2212 1.1 christos
2213 1.1.1.6 christos if (sec == htab->etab.splt)
2214 1.1 christos {
2215 1.1 christos if (htab->need_plt_stub)
2216 1.1 christos {
2217 1.1 christos /* Make space for the plt stub at the end of the .plt
2218 1.1 christos section. We want this stub right at the end, up
2219 1.1 christos against the .got section. */
2220 1.1.1.8 christos int gotalign = bfd_section_alignment (htab->etab.sgot);
2221 1.1.1.8 christos int pltalign = bfd_section_alignment (sec);
2222 1.1.1.8 christos int align = gotalign > 3 ? gotalign : 3;
2223 1.1 christos bfd_size_type mask;
2224 1.1 christos
2225 1.1.1.8 christos if (align > pltalign)
2226 1.1.1.8 christos bfd_set_section_alignment (sec, align);
2227 1.1 christos mask = ((bfd_size_type) 1 << gotalign) - 1;
2228 1.1 christos sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2229 1.1 christos }
2230 1.1 christos }
2231 1.1.1.6 christos else if (sec == htab->etab.sgot
2232 1.1.1.6 christos || sec == htab->etab.sdynbss
2233 1.1.1.6 christos || sec == htab->etab.sdynrelro)
2234 1.1 christos ;
2235 1.1.1.8 christos else if (CONST_STRNEQ (bfd_section_name (sec), ".rela"))
2236 1.1 christos {
2237 1.1 christos if (sec->size != 0)
2238 1.1 christos {
2239 1.1 christos /* Remember whether there are any reloc sections other
2240 1.1 christos than .rela.plt. */
2241 1.1.1.6 christos if (sec != htab->etab.srelplt)
2242 1.1 christos relocs = TRUE;
2243 1.1 christos
2244 1.1 christos /* We use the reloc_count field as a counter if we need
2245 1.1 christos to copy relocs into the output file. */
2246 1.1 christos sec->reloc_count = 0;
2247 1.1 christos }
2248 1.1 christos }
2249 1.1 christos else
2250 1.1 christos {
2251 1.1 christos /* It's not one of our sections, so don't allocate space. */
2252 1.1 christos continue;
2253 1.1 christos }
2254 1.1 christos
2255 1.1 christos if (sec->size == 0)
2256 1.1 christos {
2257 1.1 christos /* If we don't need this section, strip it from the
2258 1.1 christos output file. This is mostly to handle .rela.bss and
2259 1.1 christos .rela.plt. We must create both sections in
2260 1.1 christos create_dynamic_sections, because they must be created
2261 1.1 christos before the linker maps input sections to output
2262 1.1 christos sections. The linker does that before
2263 1.1 christos adjust_dynamic_symbol is called, and it is that
2264 1.1 christos function which decides whether anything needs to go
2265 1.1 christos into these sections. */
2266 1.1 christos sec->flags |= SEC_EXCLUDE;
2267 1.1 christos continue;
2268 1.1 christos }
2269 1.1 christos
2270 1.1 christos if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2271 1.1 christos continue;
2272 1.1 christos
2273 1.1 christos /* Allocate memory for the section contents. Zero it, because
2274 1.1 christos we may not fill in all the reloc sections. */
2275 1.1 christos sec->contents = bfd_zalloc (dynobj, sec->size);
2276 1.1 christos if (sec->contents == NULL)
2277 1.1 christos return FALSE;
2278 1.1 christos }
2279 1.1 christos
2280 1.1.1.8 christos return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
2281 1.1 christos }
2282 1.1 christos
2283 1.1 christos /* External entry points for sizing and building linker stubs. */
2284 1.1 christos
2285 1.1 christos /* Set up various things so that we can make a list of input sections
2286 1.1 christos for each output section included in the link. Returns -1 on error,
2287 1.1 christos 0 when no stubs will be needed, and 1 on success. */
2288 1.1 christos
2289 1.1 christos int
2290 1.1 christos elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2291 1.1 christos {
2292 1.1 christos bfd *input_bfd;
2293 1.1 christos unsigned int bfd_count;
2294 1.1.1.5 christos unsigned int top_id, top_index;
2295 1.1 christos asection *section;
2296 1.1 christos asection **input_list, **list;
2297 1.1.1.8 christos size_t amt;
2298 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2299 1.1 christos
2300 1.1 christos if (htab == NULL)
2301 1.1 christos return -1;
2302 1.1 christos
2303 1.1 christos /* Count the number of input BFDs and find the top input section id. */
2304 1.1 christos for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2305 1.1 christos input_bfd != NULL;
2306 1.1.1.4 christos input_bfd = input_bfd->link.next)
2307 1.1 christos {
2308 1.1 christos bfd_count += 1;
2309 1.1 christos for (section = input_bfd->sections;
2310 1.1 christos section != NULL;
2311 1.1 christos section = section->next)
2312 1.1 christos {
2313 1.1 christos if (top_id < section->id)
2314 1.1 christos top_id = section->id;
2315 1.1 christos }
2316 1.1 christos }
2317 1.1 christos htab->bfd_count = bfd_count;
2318 1.1 christos
2319 1.1 christos amt = sizeof (struct map_stub) * (top_id + 1);
2320 1.1 christos htab->stub_group = bfd_zmalloc (amt);
2321 1.1 christos if (htab->stub_group == NULL)
2322 1.1 christos return -1;
2323 1.1 christos
2324 1.1 christos /* We can't use output_bfd->section_count here to find the top output
2325 1.1 christos section index as some sections may have been removed, and
2326 1.1 christos strip_excluded_output_sections doesn't renumber the indices. */
2327 1.1 christos for (section = output_bfd->sections, top_index = 0;
2328 1.1 christos section != NULL;
2329 1.1 christos section = section->next)
2330 1.1 christos {
2331 1.1 christos if (top_index < section->index)
2332 1.1 christos top_index = section->index;
2333 1.1 christos }
2334 1.1 christos
2335 1.1 christos htab->top_index = top_index;
2336 1.1 christos amt = sizeof (asection *) * (top_index + 1);
2337 1.1 christos input_list = bfd_malloc (amt);
2338 1.1 christos htab->input_list = input_list;
2339 1.1 christos if (input_list == NULL)
2340 1.1 christos return -1;
2341 1.1 christos
2342 1.1 christos /* For sections we aren't interested in, mark their entries with a
2343 1.1 christos value we can check later. */
2344 1.1 christos list = input_list + top_index;
2345 1.1 christos do
2346 1.1 christos *list = bfd_abs_section_ptr;
2347 1.1 christos while (list-- != input_list);
2348 1.1 christos
2349 1.1 christos for (section = output_bfd->sections;
2350 1.1 christos section != NULL;
2351 1.1 christos section = section->next)
2352 1.1 christos {
2353 1.1 christos if ((section->flags & SEC_CODE) != 0)
2354 1.1 christos input_list[section->index] = NULL;
2355 1.1 christos }
2356 1.1 christos
2357 1.1 christos return 1;
2358 1.1 christos }
2359 1.1 christos
2360 1.1 christos /* The linker repeatedly calls this function for each input section,
2361 1.1 christos in the order that input sections are linked into output sections.
2362 1.1 christos Build lists of input sections to determine groupings between which
2363 1.1 christos we may insert linker stubs. */
2364 1.1 christos
2365 1.1 christos void
2366 1.1 christos elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2367 1.1 christos {
2368 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2369 1.1 christos
2370 1.1 christos if (htab == NULL)
2371 1.1 christos return;
2372 1.1 christos
2373 1.1 christos if (isec->output_section->index <= htab->top_index)
2374 1.1 christos {
2375 1.1 christos asection **list = htab->input_list + isec->output_section->index;
2376 1.1 christos if (*list != bfd_abs_section_ptr)
2377 1.1 christos {
2378 1.1 christos /* Steal the link_sec pointer for our list. */
2379 1.1 christos #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2380 1.1 christos /* This happens to make the list in reverse order,
2381 1.1 christos which is what we want. */
2382 1.1 christos PREV_SEC (isec) = *list;
2383 1.1 christos *list = isec;
2384 1.1 christos }
2385 1.1 christos }
2386 1.1 christos }
2387 1.1 christos
2388 1.1 christos /* See whether we can group stub sections together. Grouping stub
2389 1.1 christos sections may result in fewer stubs. More importantly, we need to
2390 1.1 christos put all .init* and .fini* stubs at the beginning of the .init or
2391 1.1 christos .fini output sections respectively, because glibc splits the
2392 1.1 christos _init and _fini functions into multiple parts. Putting a stub in
2393 1.1 christos the middle of a function is not a good idea. */
2394 1.1 christos
2395 1.1 christos static void
2396 1.1 christos group_sections (struct elf32_hppa_link_hash_table *htab,
2397 1.1 christos bfd_size_type stub_group_size,
2398 1.1 christos bfd_boolean stubs_always_before_branch)
2399 1.1 christos {
2400 1.1 christos asection **list = htab->input_list + htab->top_index;
2401 1.1 christos do
2402 1.1 christos {
2403 1.1 christos asection *tail = *list;
2404 1.1 christos if (tail == bfd_abs_section_ptr)
2405 1.1 christos continue;
2406 1.1 christos while (tail != NULL)
2407 1.1 christos {
2408 1.1 christos asection *curr;
2409 1.1 christos asection *prev;
2410 1.1 christos bfd_size_type total;
2411 1.1 christos bfd_boolean big_sec;
2412 1.1 christos
2413 1.1 christos curr = tail;
2414 1.1 christos total = tail->size;
2415 1.1 christos big_sec = total >= stub_group_size;
2416 1.1 christos
2417 1.1 christos while ((prev = PREV_SEC (curr)) != NULL
2418 1.1 christos && ((total += curr->output_offset - prev->output_offset)
2419 1.1 christos < stub_group_size))
2420 1.1 christos curr = prev;
2421 1.1 christos
2422 1.1 christos /* OK, the size from the start of CURR to the end is less
2423 1.1 christos than 240000 bytes and thus can be handled by one stub
2424 1.1 christos section. (or the tail section is itself larger than
2425 1.1 christos 240000 bytes, in which case we may be toast.)
2426 1.1 christos We should really be keeping track of the total size of
2427 1.1 christos stubs added here, as stubs contribute to the final output
2428 1.1 christos section size. That's a little tricky, and this way will
2429 1.1 christos only break if stubs added total more than 22144 bytes, or
2430 1.1 christos 2768 long branch stubs. It seems unlikely for more than
2431 1.1 christos 2768 different functions to be called, especially from
2432 1.1 christos code only 240000 bytes long. This limit used to be
2433 1.1 christos 250000, but c++ code tends to generate lots of little
2434 1.1 christos functions, and sometimes violated the assumption. */
2435 1.1 christos do
2436 1.1 christos {
2437 1.1 christos prev = PREV_SEC (tail);
2438 1.1 christos /* Set up this stub group. */
2439 1.1 christos htab->stub_group[tail->id].link_sec = curr;
2440 1.1 christos }
2441 1.1 christos while (tail != curr && (tail = prev) != NULL);
2442 1.1 christos
2443 1.1 christos /* But wait, there's more! Input sections up to 240000
2444 1.1 christos bytes before the stub section can be handled by it too.
2445 1.1 christos Don't do this if we have a really large section after the
2446 1.1 christos stubs, as adding more stubs increases the chance that
2447 1.1 christos branches may not reach into the stub section. */
2448 1.1 christos if (!stubs_always_before_branch && !big_sec)
2449 1.1 christos {
2450 1.1 christos total = 0;
2451 1.1 christos while (prev != NULL
2452 1.1 christos && ((total += tail->output_offset - prev->output_offset)
2453 1.1 christos < stub_group_size))
2454 1.1 christos {
2455 1.1 christos tail = prev;
2456 1.1 christos prev = PREV_SEC (tail);
2457 1.1 christos htab->stub_group[tail->id].link_sec = curr;
2458 1.1 christos }
2459 1.1 christos }
2460 1.1 christos tail = prev;
2461 1.1 christos }
2462 1.1 christos }
2463 1.1 christos while (list-- != htab->input_list);
2464 1.1 christos free (htab->input_list);
2465 1.1 christos #undef PREV_SEC
2466 1.1 christos }
2467 1.1 christos
2468 1.1 christos /* Read in all local syms for all input bfds, and create hash entries
2469 1.1 christos for export stubs if we are building a multi-subspace shared lib.
2470 1.1 christos Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2471 1.1 christos
2472 1.1 christos static int
2473 1.1 christos get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2474 1.1 christos {
2475 1.1 christos unsigned int bfd_indx;
2476 1.1 christos Elf_Internal_Sym *local_syms, **all_local_syms;
2477 1.1 christos int stub_changed = 0;
2478 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2479 1.1 christos
2480 1.1 christos if (htab == NULL)
2481 1.1 christos return -1;
2482 1.1 christos
2483 1.1 christos /* We want to read in symbol extension records only once. To do this
2484 1.1 christos we need to read in the local symbols in parallel and save them for
2485 1.1 christos later use; so hold pointers to the local symbols in an array. */
2486 1.1.1.8 christos size_t amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2487 1.1 christos all_local_syms = bfd_zmalloc (amt);
2488 1.1 christos htab->all_local_syms = all_local_syms;
2489 1.1 christos if (all_local_syms == NULL)
2490 1.1 christos return -1;
2491 1.1 christos
2492 1.1 christos /* Walk over all the input BFDs, swapping in local symbols.
2493 1.1 christos If we are creating a shared library, create hash entries for the
2494 1.1 christos export stubs. */
2495 1.1 christos for (bfd_indx = 0;
2496 1.1 christos input_bfd != NULL;
2497 1.1.1.4 christos input_bfd = input_bfd->link.next, bfd_indx++)
2498 1.1 christos {
2499 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2500 1.1 christos
2501 1.1 christos /* We'll need the symbol table in a second. */
2502 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2503 1.1 christos if (symtab_hdr->sh_info == 0)
2504 1.1 christos continue;
2505 1.1 christos
2506 1.1 christos /* We need an array of the local symbols attached to the input bfd. */
2507 1.1 christos local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2508 1.1 christos if (local_syms == NULL)
2509 1.1 christos {
2510 1.1 christos local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2511 1.1 christos symtab_hdr->sh_info, 0,
2512 1.1 christos NULL, NULL, NULL);
2513 1.1 christos /* Cache them for elf_link_input_bfd. */
2514 1.1 christos symtab_hdr->contents = (unsigned char *) local_syms;
2515 1.1 christos }
2516 1.1 christos if (local_syms == NULL)
2517 1.1 christos return -1;
2518 1.1 christos
2519 1.1 christos all_local_syms[bfd_indx] = local_syms;
2520 1.1 christos
2521 1.1.1.5 christos if (bfd_link_pic (info) && htab->multi_subspace)
2522 1.1 christos {
2523 1.1 christos struct elf_link_hash_entry **eh_syms;
2524 1.1 christos struct elf_link_hash_entry **eh_symend;
2525 1.1 christos unsigned int symcount;
2526 1.1 christos
2527 1.1 christos symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2528 1.1 christos - symtab_hdr->sh_info);
2529 1.1 christos eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2530 1.1 christos eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2531 1.1 christos
2532 1.1 christos /* Look through the global syms for functions; We need to
2533 1.1 christos build export stubs for all globally visible functions. */
2534 1.1 christos for (; eh_syms < eh_symend; eh_syms++)
2535 1.1 christos {
2536 1.1 christos struct elf32_hppa_link_hash_entry *hh;
2537 1.1 christos
2538 1.1 christos hh = hppa_elf_hash_entry (*eh_syms);
2539 1.1 christos
2540 1.1 christos while (hh->eh.root.type == bfd_link_hash_indirect
2541 1.1 christos || hh->eh.root.type == bfd_link_hash_warning)
2542 1.1 christos hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2543 1.1 christos
2544 1.1 christos /* At this point in the link, undefined syms have been
2545 1.1 christos resolved, so we need to check that the symbol was
2546 1.1 christos defined in this BFD. */
2547 1.1 christos if ((hh->eh.root.type == bfd_link_hash_defined
2548 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak)
2549 1.1 christos && hh->eh.type == STT_FUNC
2550 1.1 christos && hh->eh.root.u.def.section->output_section != NULL
2551 1.1 christos && (hh->eh.root.u.def.section->output_section->owner
2552 1.1 christos == output_bfd)
2553 1.1 christos && hh->eh.root.u.def.section->owner == input_bfd
2554 1.1 christos && hh->eh.def_regular
2555 1.1 christos && !hh->eh.forced_local
2556 1.1 christos && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2557 1.1 christos {
2558 1.1 christos asection *sec;
2559 1.1 christos const char *stub_name;
2560 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
2561 1.1 christos
2562 1.1 christos sec = hh->eh.root.u.def.section;
2563 1.1 christos stub_name = hh_name (hh);
2564 1.1 christos hsh = hppa_stub_hash_lookup (&htab->bstab,
2565 1.1 christos stub_name,
2566 1.1 christos FALSE, FALSE);
2567 1.1 christos if (hsh == NULL)
2568 1.1 christos {
2569 1.1 christos hsh = hppa_add_stub (stub_name, sec, htab);
2570 1.1 christos if (!hsh)
2571 1.1 christos return -1;
2572 1.1 christos
2573 1.1 christos hsh->target_value = hh->eh.root.u.def.value;
2574 1.1 christos hsh->target_section = hh->eh.root.u.def.section;
2575 1.1 christos hsh->stub_type = hppa_stub_export;
2576 1.1 christos hsh->hh = hh;
2577 1.1 christos stub_changed = 1;
2578 1.1 christos }
2579 1.1 christos else
2580 1.1 christos {
2581 1.1.1.6 christos /* xgettext:c-format */
2582 1.1.1.7 christos _bfd_error_handler (_("%pB: duplicate export stub %s"),
2583 1.1.1.6 christos input_bfd, stub_name);
2584 1.1 christos }
2585 1.1 christos }
2586 1.1 christos }
2587 1.1 christos }
2588 1.1 christos }
2589 1.1 christos
2590 1.1 christos return stub_changed;
2591 1.1 christos }
2592 1.1 christos
2593 1.1 christos /* Determine and set the size of the stub section for a final link.
2594 1.1 christos
2595 1.1 christos The basic idea here is to examine all the relocations looking for
2596 1.1 christos PC-relative calls to a target that is unreachable with a "bl"
2597 1.1 christos instruction. */
2598 1.1 christos
2599 1.1 christos bfd_boolean
2600 1.1 christos elf32_hppa_size_stubs
2601 1.1 christos (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2602 1.1 christos bfd_boolean multi_subspace, bfd_signed_vma group_size,
2603 1.1 christos asection * (*add_stub_section) (const char *, asection *),
2604 1.1 christos void (*layout_sections_again) (void))
2605 1.1 christos {
2606 1.1 christos bfd_size_type stub_group_size;
2607 1.1 christos bfd_boolean stubs_always_before_branch;
2608 1.1 christos bfd_boolean stub_changed;
2609 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2610 1.1 christos
2611 1.1 christos if (htab == NULL)
2612 1.1 christos return FALSE;
2613 1.1 christos
2614 1.1 christos /* Stash our params away. */
2615 1.1 christos htab->stub_bfd = stub_bfd;
2616 1.1 christos htab->multi_subspace = multi_subspace;
2617 1.1 christos htab->add_stub_section = add_stub_section;
2618 1.1 christos htab->layout_sections_again = layout_sections_again;
2619 1.1 christos stubs_always_before_branch = group_size < 0;
2620 1.1 christos if (group_size < 0)
2621 1.1 christos stub_group_size = -group_size;
2622 1.1 christos else
2623 1.1 christos stub_group_size = group_size;
2624 1.1 christos if (stub_group_size == 1)
2625 1.1 christos {
2626 1.1 christos /* Default values. */
2627 1.1 christos if (stubs_always_before_branch)
2628 1.1 christos {
2629 1.1 christos stub_group_size = 7680000;
2630 1.1 christos if (htab->has_17bit_branch || htab->multi_subspace)
2631 1.1 christos stub_group_size = 240000;
2632 1.1 christos if (htab->has_12bit_branch)
2633 1.1 christos stub_group_size = 7500;
2634 1.1 christos }
2635 1.1 christos else
2636 1.1 christos {
2637 1.1 christos stub_group_size = 6971392;
2638 1.1 christos if (htab->has_17bit_branch || htab->multi_subspace)
2639 1.1 christos stub_group_size = 217856;
2640 1.1 christos if (htab->has_12bit_branch)
2641 1.1 christos stub_group_size = 6808;
2642 1.1 christos }
2643 1.1 christos }
2644 1.1 christos
2645 1.1 christos group_sections (htab, stub_group_size, stubs_always_before_branch);
2646 1.1 christos
2647 1.1 christos switch (get_local_syms (output_bfd, info->input_bfds, info))
2648 1.1 christos {
2649 1.1 christos default:
2650 1.1 christos if (htab->all_local_syms)
2651 1.1 christos goto error_ret_free_local;
2652 1.1 christos return FALSE;
2653 1.1 christos
2654 1.1 christos case 0:
2655 1.1 christos stub_changed = FALSE;
2656 1.1 christos break;
2657 1.1 christos
2658 1.1 christos case 1:
2659 1.1 christos stub_changed = TRUE;
2660 1.1 christos break;
2661 1.1 christos }
2662 1.1 christos
2663 1.1 christos while (1)
2664 1.1 christos {
2665 1.1 christos bfd *input_bfd;
2666 1.1 christos unsigned int bfd_indx;
2667 1.1 christos asection *stub_sec;
2668 1.1 christos
2669 1.1 christos for (input_bfd = info->input_bfds, bfd_indx = 0;
2670 1.1 christos input_bfd != NULL;
2671 1.1.1.4 christos input_bfd = input_bfd->link.next, bfd_indx++)
2672 1.1 christos {
2673 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2674 1.1 christos asection *section;
2675 1.1 christos Elf_Internal_Sym *local_syms;
2676 1.1 christos
2677 1.1 christos /* We'll need the symbol table in a second. */
2678 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2679 1.1 christos if (symtab_hdr->sh_info == 0)
2680 1.1 christos continue;
2681 1.1 christos
2682 1.1 christos local_syms = htab->all_local_syms[bfd_indx];
2683 1.1 christos
2684 1.1 christos /* Walk over each section attached to the input bfd. */
2685 1.1 christos for (section = input_bfd->sections;
2686 1.1 christos section != NULL;
2687 1.1 christos section = section->next)
2688 1.1 christos {
2689 1.1 christos Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2690 1.1 christos
2691 1.1 christos /* If there aren't any relocs, then there's nothing more
2692 1.1 christos to do. */
2693 1.1 christos if ((section->flags & SEC_RELOC) == 0
2694 1.1.1.7 christos || (section->flags & SEC_ALLOC) == 0
2695 1.1.1.7 christos || (section->flags & SEC_LOAD) == 0
2696 1.1.1.7 christos || (section->flags & SEC_CODE) == 0
2697 1.1 christos || section->reloc_count == 0)
2698 1.1 christos continue;
2699 1.1 christos
2700 1.1 christos /* If this section is a link-once section that will be
2701 1.1 christos discarded, then don't create any stubs. */
2702 1.1 christos if (section->output_section == NULL
2703 1.1 christos || section->output_section->owner != output_bfd)
2704 1.1 christos continue;
2705 1.1 christos
2706 1.1 christos /* Get the relocs. */
2707 1.1 christos internal_relocs
2708 1.1 christos = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2709 1.1 christos info->keep_memory);
2710 1.1 christos if (internal_relocs == NULL)
2711 1.1 christos goto error_ret_free_local;
2712 1.1 christos
2713 1.1 christos /* Now examine each relocation. */
2714 1.1 christos irela = internal_relocs;
2715 1.1 christos irelaend = irela + section->reloc_count;
2716 1.1 christos for (; irela < irelaend; irela++)
2717 1.1 christos {
2718 1.1 christos unsigned int r_type, r_indx;
2719 1.1 christos enum elf32_hppa_stub_type stub_type;
2720 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
2721 1.1 christos asection *sym_sec;
2722 1.1 christos bfd_vma sym_value;
2723 1.1 christos bfd_vma destination;
2724 1.1 christos struct elf32_hppa_link_hash_entry *hh;
2725 1.1 christos char *stub_name;
2726 1.1 christos const asection *id_sec;
2727 1.1 christos
2728 1.1 christos r_type = ELF32_R_TYPE (irela->r_info);
2729 1.1 christos r_indx = ELF32_R_SYM (irela->r_info);
2730 1.1 christos
2731 1.1 christos if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2732 1.1 christos {
2733 1.1 christos bfd_set_error (bfd_error_bad_value);
2734 1.1 christos error_ret_free_internal:
2735 1.1 christos if (elf_section_data (section)->relocs == NULL)
2736 1.1 christos free (internal_relocs);
2737 1.1 christos goto error_ret_free_local;
2738 1.1 christos }
2739 1.1 christos
2740 1.1 christos /* Only look for stubs on call instructions. */
2741 1.1 christos if (r_type != (unsigned int) R_PARISC_PCREL12F
2742 1.1 christos && r_type != (unsigned int) R_PARISC_PCREL17F
2743 1.1 christos && r_type != (unsigned int) R_PARISC_PCREL22F)
2744 1.1 christos continue;
2745 1.1 christos
2746 1.1 christos /* Now determine the call target, its name, value,
2747 1.1 christos section. */
2748 1.1 christos sym_sec = NULL;
2749 1.1 christos sym_value = 0;
2750 1.1.1.7 christos destination = -1;
2751 1.1 christos hh = NULL;
2752 1.1 christos if (r_indx < symtab_hdr->sh_info)
2753 1.1 christos {
2754 1.1 christos /* It's a local symbol. */
2755 1.1 christos Elf_Internal_Sym *sym;
2756 1.1 christos Elf_Internal_Shdr *hdr;
2757 1.1 christos unsigned int shndx;
2758 1.1 christos
2759 1.1 christos sym = local_syms + r_indx;
2760 1.1 christos if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2761 1.1 christos sym_value = sym->st_value;
2762 1.1 christos shndx = sym->st_shndx;
2763 1.1 christos if (shndx < elf_numsections (input_bfd))
2764 1.1 christos {
2765 1.1 christos hdr = elf_elfsections (input_bfd)[shndx];
2766 1.1 christos sym_sec = hdr->bfd_section;
2767 1.1 christos destination = (sym_value + irela->r_addend
2768 1.1 christos + sym_sec->output_offset
2769 1.1 christos + sym_sec->output_section->vma);
2770 1.1 christos }
2771 1.1 christos }
2772 1.1 christos else
2773 1.1 christos {
2774 1.1 christos /* It's an external symbol. */
2775 1.1 christos int e_indx;
2776 1.1 christos
2777 1.1 christos e_indx = r_indx - symtab_hdr->sh_info;
2778 1.1 christos hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2779 1.1 christos
2780 1.1 christos while (hh->eh.root.type == bfd_link_hash_indirect
2781 1.1 christos || hh->eh.root.type == bfd_link_hash_warning)
2782 1.1 christos hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2783 1.1 christos
2784 1.1 christos if (hh->eh.root.type == bfd_link_hash_defined
2785 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak)
2786 1.1 christos {
2787 1.1 christos sym_sec = hh->eh.root.u.def.section;
2788 1.1 christos sym_value = hh->eh.root.u.def.value;
2789 1.1 christos if (sym_sec->output_section != NULL)
2790 1.1 christos destination = (sym_value + irela->r_addend
2791 1.1 christos + sym_sec->output_offset
2792 1.1 christos + sym_sec->output_section->vma);
2793 1.1 christos }
2794 1.1 christos else if (hh->eh.root.type == bfd_link_hash_undefweak)
2795 1.1 christos {
2796 1.1.1.5 christos if (! bfd_link_pic (info))
2797 1.1 christos continue;
2798 1.1 christos }
2799 1.1 christos else if (hh->eh.root.type == bfd_link_hash_undefined)
2800 1.1 christos {
2801 1.1 christos if (! (info->unresolved_syms_in_objects == RM_IGNORE
2802 1.1 christos && (ELF_ST_VISIBILITY (hh->eh.other)
2803 1.1 christos == STV_DEFAULT)
2804 1.1 christos && hh->eh.type != STT_PARISC_MILLI))
2805 1.1 christos continue;
2806 1.1 christos }
2807 1.1 christos else
2808 1.1 christos {
2809 1.1 christos bfd_set_error (bfd_error_bad_value);
2810 1.1 christos goto error_ret_free_internal;
2811 1.1 christos }
2812 1.1 christos }
2813 1.1 christos
2814 1.1 christos /* Determine what (if any) linker stub is needed. */
2815 1.1 christos stub_type = hppa_type_of_stub (section, irela, hh,
2816 1.1 christos destination, info);
2817 1.1 christos if (stub_type == hppa_stub_none)
2818 1.1 christos continue;
2819 1.1 christos
2820 1.1 christos /* Support for grouping stub sections. */
2821 1.1 christos id_sec = htab->stub_group[section->id].link_sec;
2822 1.1 christos
2823 1.1 christos /* Get the name of this stub. */
2824 1.1 christos stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
2825 1.1 christos if (!stub_name)
2826 1.1 christos goto error_ret_free_internal;
2827 1.1 christos
2828 1.1 christos hsh = hppa_stub_hash_lookup (&htab->bstab,
2829 1.1 christos stub_name,
2830 1.1 christos FALSE, FALSE);
2831 1.1 christos if (hsh != NULL)
2832 1.1 christos {
2833 1.1 christos /* The proper stub has already been created. */
2834 1.1 christos free (stub_name);
2835 1.1 christos continue;
2836 1.1 christos }
2837 1.1 christos
2838 1.1 christos hsh = hppa_add_stub (stub_name, section, htab);
2839 1.1 christos if (hsh == NULL)
2840 1.1 christos {
2841 1.1 christos free (stub_name);
2842 1.1 christos goto error_ret_free_internal;
2843 1.1 christos }
2844 1.1 christos
2845 1.1 christos hsh->target_value = sym_value;
2846 1.1 christos hsh->target_section = sym_sec;
2847 1.1 christos hsh->stub_type = stub_type;
2848 1.1.1.5 christos if (bfd_link_pic (info))
2849 1.1 christos {
2850 1.1 christos if (stub_type == hppa_stub_import)
2851 1.1 christos hsh->stub_type = hppa_stub_import_shared;
2852 1.1 christos else if (stub_type == hppa_stub_long_branch)
2853 1.1 christos hsh->stub_type = hppa_stub_long_branch_shared;
2854 1.1 christos }
2855 1.1 christos hsh->hh = hh;
2856 1.1 christos stub_changed = TRUE;
2857 1.1 christos }
2858 1.1 christos
2859 1.1 christos /* We're done with the internal relocs, free them. */
2860 1.1 christos if (elf_section_data (section)->relocs == NULL)
2861 1.1 christos free (internal_relocs);
2862 1.1 christos }
2863 1.1 christos }
2864 1.1 christos
2865 1.1 christos if (!stub_changed)
2866 1.1 christos break;
2867 1.1 christos
2868 1.1 christos /* OK, we've added some stubs. Find out the new size of the
2869 1.1 christos stub sections. */
2870 1.1 christos for (stub_sec = htab->stub_bfd->sections;
2871 1.1 christos stub_sec != NULL;
2872 1.1 christos stub_sec = stub_sec->next)
2873 1.1.1.5 christos if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
2874 1.1.1.5 christos stub_sec->size = 0;
2875 1.1 christos
2876 1.1 christos bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
2877 1.1 christos
2878 1.1 christos /* Ask the linker to do its stuff. */
2879 1.1 christos (*htab->layout_sections_again) ();
2880 1.1 christos stub_changed = FALSE;
2881 1.1 christos }
2882 1.1 christos
2883 1.1 christos free (htab->all_local_syms);
2884 1.1 christos return TRUE;
2885 1.1 christos
2886 1.1 christos error_ret_free_local:
2887 1.1 christos free (htab->all_local_syms);
2888 1.1 christos return FALSE;
2889 1.1 christos }
2890 1.1 christos
2891 1.1 christos /* For a final link, this function is called after we have sized the
2892 1.1 christos stubs to provide a value for __gp. */
2893 1.1 christos
2894 1.1 christos bfd_boolean
2895 1.1 christos elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
2896 1.1 christos {
2897 1.1 christos struct bfd_link_hash_entry *h;
2898 1.1 christos asection *sec = NULL;
2899 1.1 christos bfd_vma gp_val = 0;
2900 1.1 christos
2901 1.1.1.7 christos h = bfd_link_hash_lookup (info->hash, "$global$", FALSE, FALSE, FALSE);
2902 1.1 christos
2903 1.1 christos if (h != NULL
2904 1.1 christos && (h->type == bfd_link_hash_defined
2905 1.1 christos || h->type == bfd_link_hash_defweak))
2906 1.1 christos {
2907 1.1 christos gp_val = h->u.def.value;
2908 1.1 christos sec = h->u.def.section;
2909 1.1 christos }
2910 1.1 christos else
2911 1.1 christos {
2912 1.1 christos asection *splt = bfd_get_section_by_name (abfd, ".plt");
2913 1.1 christos asection *sgot = bfd_get_section_by_name (abfd, ".got");
2914 1.1 christos
2915 1.1 christos /* Choose to point our LTP at, in this order, one of .plt, .got,
2916 1.1 christos or .data, if these sections exist. In the case of choosing
2917 1.1 christos .plt try to make the LTP ideal for addressing anywhere in the
2918 1.1 christos .plt or .got with a 14 bit signed offset. Typically, the end
2919 1.1 christos of the .plt is the start of the .got, so choose .plt + 0x2000
2920 1.1 christos if either the .plt or .got is larger than 0x2000. If both
2921 1.1 christos the .plt and .got are smaller than 0x2000, choose the end of
2922 1.1 christos the .plt section. */
2923 1.1 christos sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
2924 1.1 christos ? NULL : splt;
2925 1.1 christos if (sec != NULL)
2926 1.1 christos {
2927 1.1 christos gp_val = sec->size;
2928 1.1 christos if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
2929 1.1 christos {
2930 1.1 christos gp_val = 0x2000;
2931 1.1 christos }
2932 1.1 christos }
2933 1.1 christos else
2934 1.1 christos {
2935 1.1 christos sec = sgot;
2936 1.1 christos if (sec != NULL)
2937 1.1 christos {
2938 1.1 christos if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
2939 1.1 christos {
2940 1.1.1.7 christos /* We know we don't have a .plt. If .got is large,
2941 1.1 christos offset our LTP. */
2942 1.1.1.7 christos if (sec->size > 0x2000)
2943 1.1 christos gp_val = 0x2000;
2944 1.1 christos }
2945 1.1 christos }
2946 1.1 christos else
2947 1.1 christos {
2948 1.1 christos /* No .plt or .got. Who cares what the LTP is? */
2949 1.1 christos sec = bfd_get_section_by_name (abfd, ".data");
2950 1.1 christos }
2951 1.1 christos }
2952 1.1 christos
2953 1.1 christos if (h != NULL)
2954 1.1 christos {
2955 1.1 christos h->type = bfd_link_hash_defined;
2956 1.1 christos h->u.def.value = gp_val;
2957 1.1 christos if (sec != NULL)
2958 1.1 christos h->u.def.section = sec;
2959 1.1 christos else
2960 1.1 christos h->u.def.section = bfd_abs_section_ptr;
2961 1.1 christos }
2962 1.1 christos }
2963 1.1 christos
2964 1.1.1.7 christos if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2965 1.1.1.7 christos {
2966 1.1.1.7 christos if (sec != NULL && sec->output_section != NULL)
2967 1.1.1.7 christos gp_val += sec->output_section->vma + sec->output_offset;
2968 1.1 christos
2969 1.1.1.7 christos elf_gp (abfd) = gp_val;
2970 1.1.1.7 christos }
2971 1.1 christos return TRUE;
2972 1.1 christos }
2973 1.1 christos
2974 1.1 christos /* Build all the stubs associated with the current output file. The
2975 1.1 christos stubs are kept in a hash table attached to the main linker hash
2976 1.1 christos table. We also set up the .plt entries for statically linked PIC
2977 1.1 christos functions here. This function is called via hppaelf_finish in the
2978 1.1 christos linker. */
2979 1.1 christos
2980 1.1 christos bfd_boolean
2981 1.1 christos elf32_hppa_build_stubs (struct bfd_link_info *info)
2982 1.1 christos {
2983 1.1 christos asection *stub_sec;
2984 1.1 christos struct bfd_hash_table *table;
2985 1.1 christos struct elf32_hppa_link_hash_table *htab;
2986 1.1 christos
2987 1.1 christos htab = hppa_link_hash_table (info);
2988 1.1 christos if (htab == NULL)
2989 1.1 christos return FALSE;
2990 1.1 christos
2991 1.1 christos for (stub_sec = htab->stub_bfd->sections;
2992 1.1 christos stub_sec != NULL;
2993 1.1 christos stub_sec = stub_sec->next)
2994 1.1.1.5 christos if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
2995 1.1.1.5 christos && stub_sec->size != 0)
2996 1.1.1.5 christos {
2997 1.1.1.5 christos /* Allocate memory to hold the linker stubs. */
2998 1.1.1.5 christos stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
2999 1.1.1.5 christos if (stub_sec->contents == NULL)
3000 1.1.1.5 christos return FALSE;
3001 1.1.1.5 christos stub_sec->size = 0;
3002 1.1.1.5 christos }
3003 1.1 christos
3004 1.1 christos /* Build the stubs as directed by the stub hash table. */
3005 1.1 christos table = &htab->bstab;
3006 1.1 christos bfd_hash_traverse (table, hppa_build_one_stub, info);
3007 1.1 christos
3008 1.1 christos return TRUE;
3009 1.1 christos }
3010 1.1 christos
3011 1.1 christos /* Return the base vma address which should be subtracted from the real
3012 1.1.1.2 christos address when resolving a dtpoff relocation.
3013 1.1 christos This is PT_TLS segment p_vaddr. */
3014 1.1 christos
3015 1.1 christos static bfd_vma
3016 1.1 christos dtpoff_base (struct bfd_link_info *info)
3017 1.1 christos {
3018 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
3019 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
3020 1.1 christos return 0;
3021 1.1 christos return elf_hash_table (info)->tls_sec->vma;
3022 1.1 christos }
3023 1.1 christos
3024 1.1 christos /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3025 1.1 christos
3026 1.1 christos static bfd_vma
3027 1.1 christos tpoff (struct bfd_link_info *info, bfd_vma address)
3028 1.1 christos {
3029 1.1 christos struct elf_link_hash_table *htab = elf_hash_table (info);
3030 1.1 christos
3031 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
3032 1.1 christos if (htab->tls_sec == NULL)
3033 1.1 christos return 0;
3034 1.1.1.2 christos /* hppa TLS ABI is variant I and static TLS block start just after
3035 1.1 christos tcbhead structure which has 2 pointer fields. */
3036 1.1.1.2 christos return (address - htab->tls_sec->vma
3037 1.1 christos + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3038 1.1 christos }
3039 1.1 christos
3040 1.1 christos /* Perform a final link. */
3041 1.1 christos
3042 1.1 christos static bfd_boolean
3043 1.1 christos elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3044 1.1 christos {
3045 1.1.1.5 christos struct stat buf;
3046 1.1.1.5 christos
3047 1.1 christos /* Invoke the regular ELF linker to do all the work. */
3048 1.1 christos if (!bfd_elf_final_link (abfd, info))
3049 1.1 christos return FALSE;
3050 1.1 christos
3051 1.1 christos /* If we're producing a final executable, sort the contents of the
3052 1.1 christos unwind section. */
3053 1.1.1.5 christos if (bfd_link_relocatable (info))
3054 1.1.1.5 christos return TRUE;
3055 1.1.1.5 christos
3056 1.1.1.5 christos /* Do not attempt to sort non-regular files. This is here
3057 1.1.1.5 christos especially for configure scripts and kernel builds which run
3058 1.1.1.5 christos tests with "ld [...] -o /dev/null". */
3059 1.1.1.8 christos if (stat (bfd_get_filename (abfd), &buf) != 0
3060 1.1.1.5 christos || !S_ISREG(buf.st_mode))
3061 1.1 christos return TRUE;
3062 1.1 christos
3063 1.1 christos return elf_hppa_sort_unwind (abfd);
3064 1.1 christos }
3065 1.1 christos
3066 1.1 christos /* Record the lowest address for the data and text segments. */
3067 1.1 christos
3068 1.1 christos static void
3069 1.1 christos hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3070 1.1 christos {
3071 1.1 christos struct elf32_hppa_link_hash_table *htab;
3072 1.1 christos
3073 1.1 christos htab = (struct elf32_hppa_link_hash_table*) data;
3074 1.1 christos if (htab == NULL)
3075 1.1 christos return;
3076 1.1 christos
3077 1.1 christos if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3078 1.1 christos {
3079 1.1 christos bfd_vma value;
3080 1.1 christos Elf_Internal_Phdr *p;
3081 1.1 christos
3082 1.1 christos p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3083 1.1 christos BFD_ASSERT (p != NULL);
3084 1.1 christos value = p->p_vaddr;
3085 1.1 christos
3086 1.1 christos if ((section->flags & SEC_READONLY) != 0)
3087 1.1 christos {
3088 1.1 christos if (value < htab->text_segment_base)
3089 1.1 christos htab->text_segment_base = value;
3090 1.1 christos }
3091 1.1 christos else
3092 1.1 christos {
3093 1.1 christos if (value < htab->data_segment_base)
3094 1.1 christos htab->data_segment_base = value;
3095 1.1 christos }
3096 1.1 christos }
3097 1.1 christos }
3098 1.1 christos
3099 1.1 christos /* Perform a relocation as part of a final link. */
3100 1.1 christos
3101 1.1 christos static bfd_reloc_status_type
3102 1.1 christos final_link_relocate (asection *input_section,
3103 1.1 christos bfd_byte *contents,
3104 1.1 christos const Elf_Internal_Rela *rela,
3105 1.1 christos bfd_vma value,
3106 1.1 christos struct elf32_hppa_link_hash_table *htab,
3107 1.1 christos asection *sym_sec,
3108 1.1 christos struct elf32_hppa_link_hash_entry *hh,
3109 1.1 christos struct bfd_link_info *info)
3110 1.1 christos {
3111 1.1.1.8 christos unsigned int insn;
3112 1.1 christos unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3113 1.1 christos unsigned int orig_r_type = r_type;
3114 1.1 christos reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3115 1.1 christos int r_format = howto->bitsize;
3116 1.1 christos enum hppa_reloc_field_selector_type_alt r_field;
3117 1.1 christos bfd *input_bfd = input_section->owner;
3118 1.1 christos bfd_vma offset = rela->r_offset;
3119 1.1 christos bfd_vma max_branch_offset = 0;
3120 1.1 christos bfd_byte *hit_data = contents + offset;
3121 1.1 christos bfd_signed_vma addend = rela->r_addend;
3122 1.1 christos bfd_vma location;
3123 1.1 christos struct elf32_hppa_stub_hash_entry *hsh = NULL;
3124 1.1.1.2 christos int val;
3125 1.1 christos
3126 1.1 christos if (r_type == R_PARISC_NONE)
3127 1.1 christos return bfd_reloc_ok;
3128 1.1 christos
3129 1.1 christos insn = bfd_get_32 (input_bfd, hit_data);
3130 1.1 christos
3131 1.1 christos /* Find out where we are and where we're going. */
3132 1.1 christos location = (offset +
3133 1.1 christos input_section->output_offset +
3134 1.1 christos input_section->output_section->vma);
3135 1.1 christos
3136 1.1 christos /* If we are not building a shared library, convert DLTIND relocs to
3137 1.1 christos DPREL relocs. */
3138 1.1.1.5 christos if (!bfd_link_pic (info))
3139 1.1 christos {
3140 1.1 christos switch (r_type)
3141 1.1 christos {
3142 1.1 christos case R_PARISC_DLTIND21L:
3143 1.1.1.2 christos case R_PARISC_TLS_GD21L:
3144 1.1.1.2 christos case R_PARISC_TLS_LDM21L:
3145 1.1.1.2 christos case R_PARISC_TLS_IE21L:
3146 1.1 christos r_type = R_PARISC_DPREL21L;
3147 1.1 christos break;
3148 1.1 christos
3149 1.1 christos case R_PARISC_DLTIND14R:
3150 1.1.1.2 christos case R_PARISC_TLS_GD14R:
3151 1.1.1.2 christos case R_PARISC_TLS_LDM14R:
3152 1.1.1.2 christos case R_PARISC_TLS_IE14R:
3153 1.1 christos r_type = R_PARISC_DPREL14R;
3154 1.1 christos break;
3155 1.1 christos
3156 1.1 christos case R_PARISC_DLTIND14F:
3157 1.1 christos r_type = R_PARISC_DPREL14F;
3158 1.1 christos break;
3159 1.1 christos }
3160 1.1 christos }
3161 1.1 christos
3162 1.1 christos switch (r_type)
3163 1.1 christos {
3164 1.1 christos case R_PARISC_PCREL12F:
3165 1.1 christos case R_PARISC_PCREL17F:
3166 1.1 christos case R_PARISC_PCREL22F:
3167 1.1 christos /* If this call should go via the plt, find the import stub in
3168 1.1 christos the stub hash. */
3169 1.1 christos if (sym_sec == NULL
3170 1.1 christos || sym_sec->output_section == NULL
3171 1.1 christos || (hh != NULL
3172 1.1 christos && hh->eh.plt.offset != (bfd_vma) -1
3173 1.1 christos && hh->eh.dynindx != -1
3174 1.1 christos && !hh->plabel
3175 1.1.1.5 christos && (bfd_link_pic (info)
3176 1.1 christos || !hh->eh.def_regular
3177 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak)))
3178 1.1 christos {
3179 1.1 christos hsh = hppa_get_stub_entry (input_section, sym_sec,
3180 1.1.1.7 christos hh, rela, htab);
3181 1.1 christos if (hsh != NULL)
3182 1.1 christos {
3183 1.1 christos value = (hsh->stub_offset
3184 1.1 christos + hsh->stub_sec->output_offset
3185 1.1 christos + hsh->stub_sec->output_section->vma);
3186 1.1 christos addend = 0;
3187 1.1 christos }
3188 1.1 christos else if (sym_sec == NULL && hh != NULL
3189 1.1 christos && hh->eh.root.type == bfd_link_hash_undefweak)
3190 1.1 christos {
3191 1.1 christos /* It's OK if undefined weak. Calls to undefined weak
3192 1.1 christos symbols behave as if the "called" function
3193 1.1 christos immediately returns. We can thus call to a weak
3194 1.1 christos function without first checking whether the function
3195 1.1 christos is defined. */
3196 1.1 christos value = location;
3197 1.1 christos addend = 8;
3198 1.1 christos }
3199 1.1 christos else
3200 1.1 christos return bfd_reloc_undefined;
3201 1.1 christos }
3202 1.1 christos /* Fall thru. */
3203 1.1 christos
3204 1.1 christos case R_PARISC_PCREL21L:
3205 1.1 christos case R_PARISC_PCREL17C:
3206 1.1 christos case R_PARISC_PCREL17R:
3207 1.1 christos case R_PARISC_PCREL14R:
3208 1.1 christos case R_PARISC_PCREL14F:
3209 1.1 christos case R_PARISC_PCREL32:
3210 1.1 christos /* Make it a pc relative offset. */
3211 1.1 christos value -= location;
3212 1.1 christos addend -= 8;
3213 1.1 christos break;
3214 1.1 christos
3215 1.1 christos case R_PARISC_DPREL21L:
3216 1.1 christos case R_PARISC_DPREL14R:
3217 1.1 christos case R_PARISC_DPREL14F:
3218 1.1 christos /* Convert instructions that use the linkage table pointer (r19) to
3219 1.1 christos instructions that use the global data pointer (dp). This is the
3220 1.1 christos most efficient way of using PIC code in an incomplete executable,
3221 1.1 christos but the user must follow the standard runtime conventions for
3222 1.1 christos accessing data for this to work. */
3223 1.1.1.2 christos if (orig_r_type != r_type)
3224 1.1.1.2 christos {
3225 1.1.1.2 christos if (r_type == R_PARISC_DPREL21L)
3226 1.1.1.2 christos {
3227 1.1.1.2 christos /* GCC sometimes uses a register other than r19 for the
3228 1.1.1.2 christos operation, so we must convert any addil instruction
3229 1.1.1.2 christos that uses this relocation. */
3230 1.1.1.8 christos if ((insn & 0xfc000000) == OP_ADDIL << 26)
3231 1.1.1.2 christos insn = ADDIL_DP;
3232 1.1.1.2 christos else
3233 1.1.1.2 christos /* We must have a ldil instruction. It's too hard to find
3234 1.1.1.2 christos and convert the associated add instruction, so issue an
3235 1.1.1.2 christos error. */
3236 1.1.1.6 christos _bfd_error_handler
3237 1.1.1.6 christos /* xgettext:c-format */
3238 1.1.1.7 christos (_("%pB(%pA+%#" PRIx64 "): %s fixup for insn %#x "
3239 1.1.1.7 christos "is not supported in a non-shared link"),
3240 1.1.1.2 christos input_bfd,
3241 1.1.1.2 christos input_section,
3242 1.1.1.7 christos (uint64_t) offset,
3243 1.1.1.2 christos howto->name,
3244 1.1.1.2 christos insn);
3245 1.1.1.2 christos }
3246 1.1.1.2 christos else if (r_type == R_PARISC_DPREL14F)
3247 1.1.1.2 christos {
3248 1.1.1.2 christos /* This must be a format 1 load/store. Change the base
3249 1.1.1.2 christos register to dp. */
3250 1.1.1.2 christos insn = (insn & 0xfc1ffff) | (27 << 21);
3251 1.1.1.2 christos }
3252 1.1.1.2 christos }
3253 1.1.1.2 christos
3254 1.1.1.2 christos /* For all the DP relative relocations, we need to examine the symbol's
3255 1.1.1.2 christos section. If it has no section or if it's a code section, then
3256 1.1.1.2 christos "data pointer relative" makes no sense. In that case we don't
3257 1.1.1.2 christos adjust the "value", and for 21 bit addil instructions, we change the
3258 1.1.1.2 christos source addend register from %dp to %r0. This situation commonly
3259 1.1.1.2 christos arises for undefined weak symbols and when a variable's "constness"
3260 1.1.1.2 christos is declared differently from the way the variable is defined. For
3261 1.1.1.2 christos instance: "extern int foo" with foo defined as "const int foo". */
3262 1.1 christos if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3263 1.1 christos {
3264 1.1.1.8 christos if ((insn & ((0x3fu << 26) | (0x1f << 21)))
3265 1.1.1.8 christos == ((OP_ADDIL << 26) | (27 << 21)))
3266 1.1 christos {
3267 1.1 christos insn &= ~ (0x1f << 21);
3268 1.1 christos }
3269 1.1 christos /* Now try to make things easy for the dynamic linker. */
3270 1.1 christos
3271 1.1 christos break;
3272 1.1 christos }
3273 1.1 christos /* Fall thru. */
3274 1.1 christos
3275 1.1 christos case R_PARISC_DLTIND21L:
3276 1.1 christos case R_PARISC_DLTIND14R:
3277 1.1 christos case R_PARISC_DLTIND14F:
3278 1.1.1.2 christos case R_PARISC_TLS_GD21L:
3279 1.1.1.2 christos case R_PARISC_TLS_LDM21L:
3280 1.1.1.2 christos case R_PARISC_TLS_IE21L:
3281 1.1 christos case R_PARISC_TLS_GD14R:
3282 1.1 christos case R_PARISC_TLS_LDM14R:
3283 1.1 christos case R_PARISC_TLS_IE14R:
3284 1.1 christos value -= elf_gp (input_section->output_section->owner);
3285 1.1 christos break;
3286 1.1 christos
3287 1.1 christos case R_PARISC_SEGREL32:
3288 1.1 christos if ((sym_sec->flags & SEC_CODE) != 0)
3289 1.1 christos value -= htab->text_segment_base;
3290 1.1 christos else
3291 1.1 christos value -= htab->data_segment_base;
3292 1.1 christos break;
3293 1.1 christos
3294 1.1 christos default:
3295 1.1 christos break;
3296 1.1 christos }
3297 1.1 christos
3298 1.1 christos switch (r_type)
3299 1.1 christos {
3300 1.1 christos case R_PARISC_DIR32:
3301 1.1 christos case R_PARISC_DIR14F:
3302 1.1 christos case R_PARISC_DIR17F:
3303 1.1 christos case R_PARISC_PCREL17C:
3304 1.1 christos case R_PARISC_PCREL14F:
3305 1.1 christos case R_PARISC_PCREL32:
3306 1.1 christos case R_PARISC_DPREL14F:
3307 1.1 christos case R_PARISC_PLABEL32:
3308 1.1 christos case R_PARISC_DLTIND14F:
3309 1.1 christos case R_PARISC_SEGBASE:
3310 1.1 christos case R_PARISC_SEGREL32:
3311 1.1 christos case R_PARISC_TLS_DTPMOD32:
3312 1.1 christos case R_PARISC_TLS_DTPOFF32:
3313 1.1 christos case R_PARISC_TLS_TPREL32:
3314 1.1 christos r_field = e_fsel;
3315 1.1 christos break;
3316 1.1 christos
3317 1.1 christos case R_PARISC_DLTIND21L:
3318 1.1 christos case R_PARISC_PCREL21L:
3319 1.1 christos case R_PARISC_PLABEL21L:
3320 1.1 christos r_field = e_lsel;
3321 1.1 christos break;
3322 1.1 christos
3323 1.1 christos case R_PARISC_DIR21L:
3324 1.1 christos case R_PARISC_DPREL21L:
3325 1.1 christos case R_PARISC_TLS_GD21L:
3326 1.1 christos case R_PARISC_TLS_LDM21L:
3327 1.1 christos case R_PARISC_TLS_LDO21L:
3328 1.1 christos case R_PARISC_TLS_IE21L:
3329 1.1 christos case R_PARISC_TLS_LE21L:
3330 1.1 christos r_field = e_lrsel;
3331 1.1 christos break;
3332 1.1 christos
3333 1.1 christos case R_PARISC_PCREL17R:
3334 1.1 christos case R_PARISC_PCREL14R:
3335 1.1 christos case R_PARISC_PLABEL14R:
3336 1.1 christos case R_PARISC_DLTIND14R:
3337 1.1 christos r_field = e_rsel;
3338 1.1 christos break;
3339 1.1 christos
3340 1.1 christos case R_PARISC_DIR17R:
3341 1.1 christos case R_PARISC_DIR14R:
3342 1.1 christos case R_PARISC_DPREL14R:
3343 1.1 christos case R_PARISC_TLS_GD14R:
3344 1.1 christos case R_PARISC_TLS_LDM14R:
3345 1.1 christos case R_PARISC_TLS_LDO14R:
3346 1.1 christos case R_PARISC_TLS_IE14R:
3347 1.1 christos case R_PARISC_TLS_LE14R:
3348 1.1 christos r_field = e_rrsel;
3349 1.1 christos break;
3350 1.1 christos
3351 1.1 christos case R_PARISC_PCREL12F:
3352 1.1 christos case R_PARISC_PCREL17F:
3353 1.1 christos case R_PARISC_PCREL22F:
3354 1.1 christos r_field = e_fsel;
3355 1.1 christos
3356 1.1 christos if (r_type == (unsigned int) R_PARISC_PCREL17F)
3357 1.1 christos {
3358 1.1 christos max_branch_offset = (1 << (17-1)) << 2;
3359 1.1 christos }
3360 1.1 christos else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3361 1.1 christos {
3362 1.1 christos max_branch_offset = (1 << (12-1)) << 2;
3363 1.1 christos }
3364 1.1 christos else
3365 1.1 christos {
3366 1.1 christos max_branch_offset = (1 << (22-1)) << 2;
3367 1.1 christos }
3368 1.1 christos
3369 1.1 christos /* sym_sec is NULL on undefined weak syms or when shared on
3370 1.1 christos undefined syms. We've already checked for a stub for the
3371 1.1 christos shared undefined case. */
3372 1.1 christos if (sym_sec == NULL)
3373 1.1 christos break;
3374 1.1 christos
3375 1.1 christos /* If the branch is out of reach, then redirect the
3376 1.1 christos call to the local stub for this function. */
3377 1.1 christos if (value + addend + max_branch_offset >= 2*max_branch_offset)
3378 1.1 christos {
3379 1.1 christos hsh = hppa_get_stub_entry (input_section, sym_sec,
3380 1.1.1.7 christos hh, rela, htab);
3381 1.1 christos if (hsh == NULL)
3382 1.1 christos return bfd_reloc_undefined;
3383 1.1 christos
3384 1.1 christos /* Munge up the value and addend so that we call the stub
3385 1.1 christos rather than the procedure directly. */
3386 1.1 christos value = (hsh->stub_offset
3387 1.1 christos + hsh->stub_sec->output_offset
3388 1.1 christos + hsh->stub_sec->output_section->vma
3389 1.1 christos - location);
3390 1.1 christos addend = -8;
3391 1.1 christos }
3392 1.1 christos break;
3393 1.1 christos
3394 1.1 christos /* Something we don't know how to handle. */
3395 1.1 christos default:
3396 1.1 christos return bfd_reloc_notsupported;
3397 1.1 christos }
3398 1.1 christos
3399 1.1 christos /* Make sure we can reach the stub. */
3400 1.1 christos if (max_branch_offset != 0
3401 1.1 christos && value + addend + max_branch_offset >= 2*max_branch_offset)
3402 1.1 christos {
3403 1.1.1.6 christos _bfd_error_handler
3404 1.1.1.6 christos /* xgettext:c-format */
3405 1.1.1.7 christos (_("%pB(%pA+%#" PRIx64 "): cannot reach %s, "
3406 1.1.1.7 christos "recompile with -ffunction-sections"),
3407 1.1 christos input_bfd,
3408 1.1 christos input_section,
3409 1.1.1.7 christos (uint64_t) offset,
3410 1.1 christos hsh->bh_root.string);
3411 1.1 christos bfd_set_error (bfd_error_bad_value);
3412 1.1 christos return bfd_reloc_notsupported;
3413 1.1 christos }
3414 1.1 christos
3415 1.1 christos val = hppa_field_adjust (value, addend, r_field);
3416 1.1 christos
3417 1.1 christos switch (r_type)
3418 1.1 christos {
3419 1.1 christos case R_PARISC_PCREL12F:
3420 1.1 christos case R_PARISC_PCREL17C:
3421 1.1 christos case R_PARISC_PCREL17F:
3422 1.1 christos case R_PARISC_PCREL17R:
3423 1.1 christos case R_PARISC_PCREL22F:
3424 1.1 christos case R_PARISC_DIR17F:
3425 1.1 christos case R_PARISC_DIR17R:
3426 1.1 christos /* This is a branch. Divide the offset by four.
3427 1.1 christos Note that we need to decide whether it's a branch or
3428 1.1 christos otherwise by inspecting the reloc. Inspecting insn won't
3429 1.1 christos work as insn might be from a .word directive. */
3430 1.1 christos val >>= 2;
3431 1.1 christos break;
3432 1.1 christos
3433 1.1 christos default:
3434 1.1 christos break;
3435 1.1 christos }
3436 1.1 christos
3437 1.1 christos insn = hppa_rebuild_insn (insn, val, r_format);
3438 1.1 christos
3439 1.1 christos /* Update the instruction word. */
3440 1.1 christos bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3441 1.1 christos return bfd_reloc_ok;
3442 1.1 christos }
3443 1.1 christos
3444 1.1 christos /* Relocate an HPPA ELF section. */
3445 1.1 christos
3446 1.1 christos static bfd_boolean
3447 1.1 christos elf32_hppa_relocate_section (bfd *output_bfd,
3448 1.1 christos struct bfd_link_info *info,
3449 1.1 christos bfd *input_bfd,
3450 1.1 christos asection *input_section,
3451 1.1 christos bfd_byte *contents,
3452 1.1 christos Elf_Internal_Rela *relocs,
3453 1.1 christos Elf_Internal_Sym *local_syms,
3454 1.1 christos asection **local_sections)
3455 1.1 christos {
3456 1.1 christos bfd_vma *local_got_offsets;
3457 1.1 christos struct elf32_hppa_link_hash_table *htab;
3458 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3459 1.1 christos Elf_Internal_Rela *rela;
3460 1.1 christos Elf_Internal_Rela *relend;
3461 1.1 christos
3462 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3463 1.1 christos
3464 1.1 christos htab = hppa_link_hash_table (info);
3465 1.1 christos if (htab == NULL)
3466 1.1 christos return FALSE;
3467 1.1 christos
3468 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
3469 1.1 christos
3470 1.1 christos rela = relocs;
3471 1.1 christos relend = relocs + input_section->reloc_count;
3472 1.1 christos for (; rela < relend; rela++)
3473 1.1 christos {
3474 1.1 christos unsigned int r_type;
3475 1.1 christos reloc_howto_type *howto;
3476 1.1 christos unsigned int r_symndx;
3477 1.1 christos struct elf32_hppa_link_hash_entry *hh;
3478 1.1 christos Elf_Internal_Sym *sym;
3479 1.1 christos asection *sym_sec;
3480 1.1 christos bfd_vma relocation;
3481 1.1 christos bfd_reloc_status_type rstatus;
3482 1.1 christos const char *sym_name;
3483 1.1 christos bfd_boolean plabel;
3484 1.1 christos bfd_boolean warned_undef;
3485 1.1 christos
3486 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
3487 1.1 christos if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3488 1.1 christos {
3489 1.1 christos bfd_set_error (bfd_error_bad_value);
3490 1.1 christos return FALSE;
3491 1.1 christos }
3492 1.1 christos if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3493 1.1 christos || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3494 1.1 christos continue;
3495 1.1 christos
3496 1.1 christos r_symndx = ELF32_R_SYM (rela->r_info);
3497 1.1 christos hh = NULL;
3498 1.1 christos sym = NULL;
3499 1.1 christos sym_sec = NULL;
3500 1.1 christos warned_undef = FALSE;
3501 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3502 1.1 christos {
3503 1.1 christos /* This is a local symbol, h defaults to NULL. */
3504 1.1 christos sym = local_syms + r_symndx;
3505 1.1 christos sym_sec = local_sections[r_symndx];
3506 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3507 1.1 christos }
3508 1.1 christos else
3509 1.1 christos {
3510 1.1 christos struct elf_link_hash_entry *eh;
3511 1.1.1.3 christos bfd_boolean unresolved_reloc, ignored;
3512 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3513 1.1 christos
3514 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3515 1.1 christos r_symndx, symtab_hdr, sym_hashes,
3516 1.1 christos eh, sym_sec, relocation,
3517 1.1.1.3 christos unresolved_reloc, warned_undef,
3518 1.1.1.3 christos ignored);
3519 1.1 christos
3520 1.1.1.5 christos if (!bfd_link_relocatable (info)
3521 1.1 christos && relocation == 0
3522 1.1 christos && eh->root.type != bfd_link_hash_defined
3523 1.1 christos && eh->root.type != bfd_link_hash_defweak
3524 1.1 christos && eh->root.type != bfd_link_hash_undefweak)
3525 1.1 christos {
3526 1.1 christos if (info->unresolved_syms_in_objects == RM_IGNORE
3527 1.1 christos && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3528 1.1 christos && eh->type == STT_PARISC_MILLI)
3529 1.1 christos {
3530 1.1.1.5 christos (*info->callbacks->undefined_symbol)
3531 1.1.1.5 christos (info, eh_name (eh), input_bfd,
3532 1.1.1.5 christos input_section, rela->r_offset, FALSE);
3533 1.1 christos warned_undef = TRUE;
3534 1.1 christos }
3535 1.1 christos }
3536 1.1 christos hh = hppa_elf_hash_entry (eh);
3537 1.1 christos }
3538 1.1 christos
3539 1.1.1.2 christos if (sym_sec != NULL && discarded_section (sym_sec))
3540 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3541 1.1.1.2 christos rela, 1, relend,
3542 1.1.1.2 christos elf_hppa_howto_table + r_type, 0,
3543 1.1 christos contents);
3544 1.1 christos
3545 1.1.1.5 christos if (bfd_link_relocatable (info))
3546 1.1 christos continue;
3547 1.1 christos
3548 1.1 christos /* Do any required modifications to the relocation value, and
3549 1.1 christos determine what types of dynamic info we need to output, if
3550 1.1 christos any. */
3551 1.1 christos plabel = 0;
3552 1.1 christos switch (r_type)
3553 1.1 christos {
3554 1.1 christos case R_PARISC_DLTIND14F:
3555 1.1 christos case R_PARISC_DLTIND14R:
3556 1.1 christos case R_PARISC_DLTIND21L:
3557 1.1 christos {
3558 1.1 christos bfd_vma off;
3559 1.1.1.7 christos bfd_boolean do_got = FALSE;
3560 1.1.1.7 christos bfd_boolean reloc = bfd_link_pic (info);
3561 1.1 christos
3562 1.1 christos /* Relocation is to the entry for this symbol in the
3563 1.1 christos global offset table. */
3564 1.1 christos if (hh != NULL)
3565 1.1 christos {
3566 1.1 christos bfd_boolean dyn;
3567 1.1 christos
3568 1.1 christos off = hh->eh.got.offset;
3569 1.1 christos dyn = htab->etab.dynamic_sections_created;
3570 1.1.1.7 christos reloc = (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh)
3571 1.1.1.7 christos && (reloc
3572 1.1.1.7 christos || (hh->eh.dynindx != -1
3573 1.1.1.7 christos && !SYMBOL_REFERENCES_LOCAL (info, &hh->eh))));
3574 1.1.1.7 christos if (!reloc
3575 1.1.1.7 christos || !WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3576 1.1.1.7 christos bfd_link_pic (info),
3577 1.1.1.7 christos &hh->eh))
3578 1.1 christos {
3579 1.1 christos /* If we aren't going to call finish_dynamic_symbol,
3580 1.1 christos then we need to handle initialisation of the .got
3581 1.1 christos entry and create needed relocs here. Since the
3582 1.1 christos offset must always be a multiple of 4, we use the
3583 1.1 christos least significant bit to record whether we have
3584 1.1 christos initialised it already. */
3585 1.1 christos if ((off & 1) != 0)
3586 1.1 christos off &= ~1;
3587 1.1 christos else
3588 1.1 christos {
3589 1.1 christos hh->eh.got.offset |= 1;
3590 1.1.1.7 christos do_got = TRUE;
3591 1.1 christos }
3592 1.1 christos }
3593 1.1 christos }
3594 1.1 christos else
3595 1.1 christos {
3596 1.1 christos /* Local symbol case. */
3597 1.1 christos if (local_got_offsets == NULL)
3598 1.1 christos abort ();
3599 1.1 christos
3600 1.1 christos off = local_got_offsets[r_symndx];
3601 1.1 christos
3602 1.1 christos /* The offset must always be a multiple of 4. We use
3603 1.1 christos the least significant bit to record whether we have
3604 1.1 christos already generated the necessary reloc. */
3605 1.1 christos if ((off & 1) != 0)
3606 1.1 christos off &= ~1;
3607 1.1 christos else
3608 1.1 christos {
3609 1.1 christos local_got_offsets[r_symndx] |= 1;
3610 1.1.1.7 christos do_got = TRUE;
3611 1.1 christos }
3612 1.1 christos }
3613 1.1 christos
3614 1.1 christos if (do_got)
3615 1.1 christos {
3616 1.1.1.7 christos if (reloc)
3617 1.1 christos {
3618 1.1 christos /* Output a dynamic relocation for this GOT entry.
3619 1.1 christos In this case it is relative to the base of the
3620 1.1 christos object because the symbol index is zero. */
3621 1.1 christos Elf_Internal_Rela outrel;
3622 1.1 christos bfd_byte *loc;
3623 1.1.1.6 christos asection *sec = htab->etab.srelgot;
3624 1.1 christos
3625 1.1 christos outrel.r_offset = (off
3626 1.1.1.6 christos + htab->etab.sgot->output_offset
3627 1.1.1.6 christos + htab->etab.sgot->output_section->vma);
3628 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3629 1.1 christos outrel.r_addend = relocation;
3630 1.1 christos loc = sec->contents;
3631 1.1 christos loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3632 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3633 1.1 christos }
3634 1.1 christos else
3635 1.1 christos bfd_put_32 (output_bfd, relocation,
3636 1.1.1.6 christos htab->etab.sgot->contents + off);
3637 1.1 christos }
3638 1.1 christos
3639 1.1 christos if (off >= (bfd_vma) -2)
3640 1.1 christos abort ();
3641 1.1 christos
3642 1.1 christos /* Add the base of the GOT to the relocation value. */
3643 1.1 christos relocation = (off
3644 1.1.1.6 christos + htab->etab.sgot->output_offset
3645 1.1.1.6 christos + htab->etab.sgot->output_section->vma);
3646 1.1 christos }
3647 1.1 christos break;
3648 1.1 christos
3649 1.1 christos case R_PARISC_SEGREL32:
3650 1.1 christos /* If this is the first SEGREL relocation, then initialize
3651 1.1 christos the segment base values. */
3652 1.1 christos if (htab->text_segment_base == (bfd_vma) -1)
3653 1.1 christos bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3654 1.1 christos break;
3655 1.1 christos
3656 1.1 christos case R_PARISC_PLABEL14R:
3657 1.1 christos case R_PARISC_PLABEL21L:
3658 1.1 christos case R_PARISC_PLABEL32:
3659 1.1 christos if (htab->etab.dynamic_sections_created)
3660 1.1 christos {
3661 1.1 christos bfd_vma off;
3662 1.1 christos bfd_boolean do_plt = 0;
3663 1.1 christos /* If we have a global symbol with a PLT slot, then
3664 1.1 christos redirect this relocation to it. */
3665 1.1 christos if (hh != NULL)
3666 1.1 christos {
3667 1.1 christos off = hh->eh.plt.offset;
3668 1.1.1.5 christos if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3669 1.1.1.5 christos bfd_link_pic (info),
3670 1.1 christos &hh->eh))
3671 1.1 christos {
3672 1.1.1.7 christos /* In a non-shared link, adjust_dynamic_symbol
3673 1.1 christos isn't called for symbols forced local. We
3674 1.1 christos need to write out the plt entry here. */
3675 1.1 christos if ((off & 1) != 0)
3676 1.1 christos off &= ~1;
3677 1.1 christos else
3678 1.1 christos {
3679 1.1 christos hh->eh.plt.offset |= 1;
3680 1.1 christos do_plt = 1;
3681 1.1 christos }
3682 1.1 christos }
3683 1.1 christos }
3684 1.1 christos else
3685 1.1 christos {
3686 1.1 christos bfd_vma *local_plt_offsets;
3687 1.1 christos
3688 1.1 christos if (local_got_offsets == NULL)
3689 1.1 christos abort ();
3690 1.1 christos
3691 1.1 christos local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3692 1.1 christos off = local_plt_offsets[r_symndx];
3693 1.1 christos
3694 1.1 christos /* As for the local .got entry case, we use the last
3695 1.1 christos bit to record whether we've already initialised
3696 1.1 christos this local .plt entry. */
3697 1.1 christos if ((off & 1) != 0)
3698 1.1 christos off &= ~1;
3699 1.1 christos else
3700 1.1 christos {
3701 1.1 christos local_plt_offsets[r_symndx] |= 1;
3702 1.1 christos do_plt = 1;
3703 1.1 christos }
3704 1.1 christos }
3705 1.1 christos
3706 1.1 christos if (do_plt)
3707 1.1 christos {
3708 1.1.1.5 christos if (bfd_link_pic (info))
3709 1.1 christos {
3710 1.1 christos /* Output a dynamic IPLT relocation for this
3711 1.1 christos PLT entry. */
3712 1.1 christos Elf_Internal_Rela outrel;
3713 1.1 christos bfd_byte *loc;
3714 1.1.1.6 christos asection *s = htab->etab.srelplt;
3715 1.1 christos
3716 1.1 christos outrel.r_offset = (off
3717 1.1.1.6 christos + htab->etab.splt->output_offset
3718 1.1.1.6 christos + htab->etab.splt->output_section->vma);
3719 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3720 1.1 christos outrel.r_addend = relocation;
3721 1.1 christos loc = s->contents;
3722 1.1 christos loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3723 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3724 1.1 christos }
3725 1.1 christos else
3726 1.1 christos {
3727 1.1 christos bfd_put_32 (output_bfd,
3728 1.1 christos relocation,
3729 1.1.1.6 christos htab->etab.splt->contents + off);
3730 1.1 christos bfd_put_32 (output_bfd,
3731 1.1.1.6 christos elf_gp (htab->etab.splt->output_section->owner),
3732 1.1.1.6 christos htab->etab.splt->contents + off + 4);
3733 1.1 christos }
3734 1.1 christos }
3735 1.1 christos
3736 1.1 christos if (off >= (bfd_vma) -2)
3737 1.1 christos abort ();
3738 1.1 christos
3739 1.1 christos /* PLABELs contain function pointers. Relocation is to
3740 1.1 christos the entry for the function in the .plt. The magic +2
3741 1.1 christos offset signals to $$dyncall that the function pointer
3742 1.1 christos is in the .plt and thus has a gp pointer too.
3743 1.1 christos Exception: Undefined PLABELs should have a value of
3744 1.1 christos zero. */
3745 1.1 christos if (hh == NULL
3746 1.1 christos || (hh->eh.root.type != bfd_link_hash_undefweak
3747 1.1 christos && hh->eh.root.type != bfd_link_hash_undefined))
3748 1.1 christos {
3749 1.1 christos relocation = (off
3750 1.1.1.6 christos + htab->etab.splt->output_offset
3751 1.1.1.6 christos + htab->etab.splt->output_section->vma
3752 1.1 christos + 2);
3753 1.1 christos }
3754 1.1 christos plabel = 1;
3755 1.1 christos }
3756 1.1.1.6 christos /* Fall through. */
3757 1.1 christos
3758 1.1 christos case R_PARISC_DIR17F:
3759 1.1 christos case R_PARISC_DIR17R:
3760 1.1 christos case R_PARISC_DIR14F:
3761 1.1 christos case R_PARISC_DIR14R:
3762 1.1 christos case R_PARISC_DIR21L:
3763 1.1 christos case R_PARISC_DPREL14F:
3764 1.1 christos case R_PARISC_DPREL14R:
3765 1.1 christos case R_PARISC_DPREL21L:
3766 1.1 christos case R_PARISC_DIR32:
3767 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0)
3768 1.1 christos break;
3769 1.1 christos
3770 1.1.1.7 christos if (bfd_link_pic (info)
3771 1.1.1.7 christos ? ((hh == NULL
3772 1.1.1.8 christos || hh->eh.dyn_relocs != NULL)
3773 1.1.1.7 christos && ((hh != NULL && pc_dynrelocs (hh))
3774 1.1.1.7 christos || IS_ABSOLUTE_RELOC (r_type)))
3775 1.1.1.7 christos : (hh != NULL
3776 1.1.1.8 christos && hh->eh.dyn_relocs != NULL))
3777 1.1 christos {
3778 1.1 christos Elf_Internal_Rela outrel;
3779 1.1 christos bfd_boolean skip;
3780 1.1 christos asection *sreloc;
3781 1.1 christos bfd_byte *loc;
3782 1.1 christos
3783 1.1 christos /* When generating a shared object, these relocations
3784 1.1 christos are copied into the output file to be resolved at run
3785 1.1 christos time. */
3786 1.1 christos
3787 1.1 christos outrel.r_addend = rela->r_addend;
3788 1.1 christos outrel.r_offset =
3789 1.1 christos _bfd_elf_section_offset (output_bfd, info, input_section,
3790 1.1 christos rela->r_offset);
3791 1.1 christos skip = (outrel.r_offset == (bfd_vma) -1
3792 1.1 christos || outrel.r_offset == (bfd_vma) -2);
3793 1.1 christos outrel.r_offset += (input_section->output_offset
3794 1.1 christos + input_section->output_section->vma);
3795 1.1.1.2 christos
3796 1.1 christos if (skip)
3797 1.1 christos {
3798 1.1 christos memset (&outrel, 0, sizeof (outrel));
3799 1.1 christos }
3800 1.1 christos else if (hh != NULL
3801 1.1 christos && hh->eh.dynindx != -1
3802 1.1 christos && (plabel
3803 1.1 christos || !IS_ABSOLUTE_RELOC (r_type)
3804 1.1.1.5 christos || !bfd_link_pic (info)
3805 1.1.1.5 christos || !SYMBOLIC_BIND (info, &hh->eh)
3806 1.1 christos || !hh->eh.def_regular))
3807 1.1 christos {
3808 1.1 christos outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
3809 1.1 christos }
3810 1.1 christos else /* It's a local symbol, or one marked to become local. */
3811 1.1 christos {
3812 1.1 christos int indx = 0;
3813 1.1 christos
3814 1.1 christos /* Add the absolute offset of the symbol. */
3815 1.1 christos outrel.r_addend += relocation;
3816 1.1 christos
3817 1.1 christos /* Global plabels need to be processed by the
3818 1.1 christos dynamic linker so that functions have at most one
3819 1.1 christos fptr. For this reason, we need to differentiate
3820 1.1 christos between global and local plabels, which we do by
3821 1.1 christos providing the function symbol for a global plabel
3822 1.1 christos reloc, and no symbol for local plabels. */
3823 1.1 christos if (! plabel
3824 1.1 christos && sym_sec != NULL
3825 1.1 christos && sym_sec->output_section != NULL
3826 1.1 christos && ! bfd_is_abs_section (sym_sec))
3827 1.1 christos {
3828 1.1 christos asection *osec;
3829 1.1 christos
3830 1.1 christos osec = sym_sec->output_section;
3831 1.1 christos indx = elf_section_data (osec)->dynindx;
3832 1.1 christos if (indx == 0)
3833 1.1 christos {
3834 1.1 christos osec = htab->etab.text_index_section;
3835 1.1 christos indx = elf_section_data (osec)->dynindx;
3836 1.1 christos }
3837 1.1 christos BFD_ASSERT (indx != 0);
3838 1.1 christos
3839 1.1 christos /* We are turning this relocation into one
3840 1.1 christos against a section symbol, so subtract out the
3841 1.1 christos output section's address but not the offset
3842 1.1 christos of the input section in the output section. */
3843 1.1 christos outrel.r_addend -= osec->vma;
3844 1.1 christos }
3845 1.1 christos
3846 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
3847 1.1 christos }
3848 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
3849 1.1 christos if (sreloc == NULL)
3850 1.1 christos abort ();
3851 1.1 christos
3852 1.1 christos loc = sreloc->contents;
3853 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3854 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3855 1.1 christos }
3856 1.1 christos break;
3857 1.1.1.2 christos
3858 1.1 christos case R_PARISC_TLS_LDM21L:
3859 1.1 christos case R_PARISC_TLS_LDM14R:
3860 1.1 christos {
3861 1.1 christos bfd_vma off;
3862 1.1.1.2 christos
3863 1.1 christos off = htab->tls_ldm_got.offset;
3864 1.1 christos if (off & 1)
3865 1.1 christos off &= ~1;
3866 1.1 christos else
3867 1.1 christos {
3868 1.1 christos Elf_Internal_Rela outrel;
3869 1.1 christos bfd_byte *loc;
3870 1.1 christos
3871 1.1.1.2 christos outrel.r_offset = (off
3872 1.1.1.6 christos + htab->etab.sgot->output_section->vma
3873 1.1.1.6 christos + htab->etab.sgot->output_offset);
3874 1.1 christos outrel.r_addend = 0;
3875 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
3876 1.1.1.6 christos loc = htab->etab.srelgot->contents;
3877 1.1.1.6 christos loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3878 1.1 christos
3879 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3880 1.1 christos htab->tls_ldm_got.offset |= 1;
3881 1.1 christos }
3882 1.1 christos
3883 1.1 christos /* Add the base of the GOT to the relocation value. */
3884 1.1 christos relocation = (off
3885 1.1.1.6 christos + htab->etab.sgot->output_offset
3886 1.1.1.6 christos + htab->etab.sgot->output_section->vma);
3887 1.1 christos
3888 1.1 christos break;
3889 1.1 christos }
3890 1.1 christos
3891 1.1 christos case R_PARISC_TLS_LDO21L:
3892 1.1 christos case R_PARISC_TLS_LDO14R:
3893 1.1 christos relocation -= dtpoff_base (info);
3894 1.1 christos break;
3895 1.1 christos
3896 1.1 christos case R_PARISC_TLS_GD21L:
3897 1.1 christos case R_PARISC_TLS_GD14R:
3898 1.1 christos case R_PARISC_TLS_IE21L:
3899 1.1 christos case R_PARISC_TLS_IE14R:
3900 1.1 christos {
3901 1.1 christos bfd_vma off;
3902 1.1 christos int indx;
3903 1.1 christos char tls_type;
3904 1.1 christos
3905 1.1 christos indx = 0;
3906 1.1 christos if (hh != NULL)
3907 1.1 christos {
3908 1.1.1.7 christos if (!htab->etab.dynamic_sections_created
3909 1.1.1.7 christos || hh->eh.dynindx == -1
3910 1.1.1.7 christos || SYMBOL_REFERENCES_LOCAL (info, &hh->eh)
3911 1.1.1.7 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))
3912 1.1.1.7 christos /* This is actually a static link, or it is a
3913 1.1.1.7 christos -Bsymbolic link and the symbol is defined
3914 1.1.1.7 christos locally, or the symbol was forced to be local
3915 1.1.1.7 christos because of a version file. */
3916 1.1.1.7 christos ;
3917 1.1.1.7 christos else
3918 1.1.1.7 christos indx = hh->eh.dynindx;
3919 1.1 christos off = hh->eh.got.offset;
3920 1.1 christos tls_type = hh->tls_type;
3921 1.1 christos }
3922 1.1 christos else
3923 1.1 christos {
3924 1.1 christos off = local_got_offsets[r_symndx];
3925 1.1 christos tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
3926 1.1 christos }
3927 1.1 christos
3928 1.1 christos if (tls_type == GOT_UNKNOWN)
3929 1.1 christos abort ();
3930 1.1 christos
3931 1.1 christos if ((off & 1) != 0)
3932 1.1 christos off &= ~1;
3933 1.1 christos else
3934 1.1 christos {
3935 1.1 christos bfd_boolean need_relocs = FALSE;
3936 1.1 christos Elf_Internal_Rela outrel;
3937 1.1 christos bfd_byte *loc = NULL;
3938 1.1 christos int cur_off = off;
3939 1.1 christos
3940 1.1.1.7 christos /* The GOT entries have not been initialized yet. Do it
3941 1.1.1.7 christos now, and emit any relocations. If both an IE GOT and a
3942 1.1.1.7 christos GD GOT are necessary, we emit the GD first. */
3943 1.1.1.7 christos
3944 1.1.1.7 christos if (indx != 0
3945 1.1.1.7 christos || (bfd_link_dll (info)
3946 1.1.1.7 christos && (hh == NULL
3947 1.1.1.7 christos || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))))
3948 1.1 christos {
3949 1.1 christos need_relocs = TRUE;
3950 1.1.1.6 christos loc = htab->etab.srelgot->contents;
3951 1.1.1.7 christos loc += (htab->etab.srelgot->reloc_count
3952 1.1.1.7 christos * sizeof (Elf32_External_Rela));
3953 1.1 christos }
3954 1.1 christos
3955 1.1 christos if (tls_type & GOT_TLS_GD)
3956 1.1 christos {
3957 1.1 christos if (need_relocs)
3958 1.1 christos {
3959 1.1.1.7 christos outrel.r_offset
3960 1.1.1.7 christos = (cur_off
3961 1.1.1.7 christos + htab->etab.sgot->output_section->vma
3962 1.1.1.7 christos + htab->etab.sgot->output_offset);
3963 1.1.1.7 christos outrel.r_info
3964 1.1.1.7 christos = ELF32_R_INFO (indx, R_PARISC_TLS_DTPMOD32);
3965 1.1 christos outrel.r_addend = 0;
3966 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3967 1.1.1.6 christos htab->etab.srelgot->reloc_count++;
3968 1.1 christos loc += sizeof (Elf32_External_Rela);
3969 1.1.1.7 christos bfd_put_32 (output_bfd, 0,
3970 1.1.1.7 christos htab->etab.sgot->contents + cur_off);
3971 1.1 christos }
3972 1.1 christos else
3973 1.1.1.7 christos /* If we are not emitting relocations for a
3974 1.1.1.7 christos general dynamic reference, then we must be in a
3975 1.1.1.7 christos static link or an executable link with the
3976 1.1.1.7 christos symbol binding locally. Mark it as belonging
3977 1.1.1.7 christos to module 1, the executable. */
3978 1.1.1.7 christos bfd_put_32 (output_bfd, 1,
3979 1.1.1.7 christos htab->etab.sgot->contents + cur_off);
3980 1.1.1.7 christos
3981 1.1.1.7 christos if (indx != 0)
3982 1.1 christos {
3983 1.1.1.7 christos outrel.r_info
3984 1.1.1.7 christos = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
3985 1.1.1.7 christos outrel.r_offset += 4;
3986 1.1.1.7 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3987 1.1.1.7 christos htab->etab.srelgot->reloc_count++;
3988 1.1.1.7 christos loc += sizeof (Elf32_External_Rela);
3989 1.1.1.7 christos bfd_put_32 (output_bfd, 0,
3990 1.1.1.6 christos htab->etab.sgot->contents + cur_off + 4);
3991 1.1 christos }
3992 1.1.1.7 christos else
3993 1.1.1.7 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3994 1.1.1.7 christos htab->etab.sgot->contents + cur_off + 4);
3995 1.1 christos cur_off += 8;
3996 1.1 christos }
3997 1.1 christos
3998 1.1 christos if (tls_type & GOT_TLS_IE)
3999 1.1 christos {
4000 1.1.1.7 christos if (need_relocs
4001 1.1.1.7 christos && !(bfd_link_executable (info)
4002 1.1.1.7 christos && SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4003 1.1 christos {
4004 1.1.1.7 christos outrel.r_offset
4005 1.1.1.7 christos = (cur_off
4006 1.1.1.7 christos + htab->etab.sgot->output_section->vma
4007 1.1.1.7 christos + htab->etab.sgot->output_offset);
4008 1.1.1.7 christos outrel.r_info = ELF32_R_INFO (indx,
4009 1.1.1.7 christos R_PARISC_TLS_TPREL32);
4010 1.1 christos if (indx == 0)
4011 1.1 christos outrel.r_addend = relocation - dtpoff_base (info);
4012 1.1 christos else
4013 1.1 christos outrel.r_addend = 0;
4014 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4015 1.1.1.6 christos htab->etab.srelgot->reloc_count++;
4016 1.1 christos loc += sizeof (Elf32_External_Rela);
4017 1.1 christos }
4018 1.1 christos else
4019 1.1 christos bfd_put_32 (output_bfd, tpoff (info, relocation),
4020 1.1.1.6 christos htab->etab.sgot->contents + cur_off);
4021 1.1 christos cur_off += 4;
4022 1.1 christos }
4023 1.1 christos
4024 1.1 christos if (hh != NULL)
4025 1.1 christos hh->eh.got.offset |= 1;
4026 1.1 christos else
4027 1.1 christos local_got_offsets[r_symndx] |= 1;
4028 1.1 christos }
4029 1.1 christos
4030 1.1.1.7 christos if ((tls_type & GOT_NORMAL) != 0
4031 1.1.1.7 christos && (tls_type & (GOT_TLS_GD | GOT_TLS_LDM | GOT_TLS_IE)) != 0)
4032 1.1.1.7 christos {
4033 1.1.1.7 christos if (hh != NULL)
4034 1.1.1.7 christos _bfd_error_handler (_("%s has both normal and TLS relocs"),
4035 1.1.1.7 christos hh_name (hh));
4036 1.1.1.7 christos else
4037 1.1.1.7 christos {
4038 1.1.1.7 christos Elf_Internal_Sym *isym
4039 1.1.1.8 christos = bfd_sym_from_r_symndx (&htab->etab.sym_cache,
4040 1.1.1.7 christos input_bfd, r_symndx);
4041 1.1.1.7 christos if (isym == NULL)
4042 1.1.1.7 christos return FALSE;
4043 1.1.1.7 christos sym_name
4044 1.1.1.7 christos = bfd_elf_string_from_elf_section (input_bfd,
4045 1.1.1.7 christos symtab_hdr->sh_link,
4046 1.1.1.7 christos isym->st_name);
4047 1.1.1.7 christos if (sym_name == NULL)
4048 1.1.1.7 christos return FALSE;
4049 1.1.1.7 christos if (*sym_name == '\0')
4050 1.1.1.8 christos sym_name = bfd_section_name (sym_sec);
4051 1.1.1.7 christos _bfd_error_handler
4052 1.1.1.7 christos (_("%pB:%s has both normal and TLS relocs"),
4053 1.1.1.7 christos input_bfd, sym_name);
4054 1.1.1.7 christos }
4055 1.1.1.7 christos bfd_set_error (bfd_error_bad_value);
4056 1.1.1.7 christos return FALSE;
4057 1.1.1.7 christos }
4058 1.1.1.7 christos
4059 1.1 christos if ((tls_type & GOT_TLS_GD)
4060 1.1.1.7 christos && r_type != R_PARISC_TLS_GD21L
4061 1.1.1.7 christos && r_type != R_PARISC_TLS_GD14R)
4062 1.1 christos off += 2 * GOT_ENTRY_SIZE;
4063 1.1 christos
4064 1.1 christos /* Add the base of the GOT to the relocation value. */
4065 1.1 christos relocation = (off
4066 1.1.1.6 christos + htab->etab.sgot->output_offset
4067 1.1.1.6 christos + htab->etab.sgot->output_section->vma);
4068 1.1 christos
4069 1.1 christos break;
4070 1.1 christos }
4071 1.1 christos
4072 1.1 christos case R_PARISC_TLS_LE21L:
4073 1.1 christos case R_PARISC_TLS_LE14R:
4074 1.1 christos {
4075 1.1 christos relocation = tpoff (info, relocation);
4076 1.1 christos break;
4077 1.1 christos }
4078 1.1 christos break;
4079 1.1 christos
4080 1.1 christos default:
4081 1.1 christos break;
4082 1.1 christos }
4083 1.1 christos
4084 1.1 christos rstatus = final_link_relocate (input_section, contents, rela, relocation,
4085 1.1 christos htab, sym_sec, hh, info);
4086 1.1 christos
4087 1.1 christos if (rstatus == bfd_reloc_ok)
4088 1.1 christos continue;
4089 1.1 christos
4090 1.1 christos if (hh != NULL)
4091 1.1 christos sym_name = hh_name (hh);
4092 1.1 christos else
4093 1.1 christos {
4094 1.1 christos sym_name = bfd_elf_string_from_elf_section (input_bfd,
4095 1.1 christos symtab_hdr->sh_link,
4096 1.1 christos sym->st_name);
4097 1.1 christos if (sym_name == NULL)
4098 1.1 christos return FALSE;
4099 1.1 christos if (*sym_name == '\0')
4100 1.1.1.8 christos sym_name = bfd_section_name (sym_sec);
4101 1.1 christos }
4102 1.1 christos
4103 1.1 christos howto = elf_hppa_howto_table + r_type;
4104 1.1 christos
4105 1.1 christos if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4106 1.1 christos {
4107 1.1 christos if (rstatus == bfd_reloc_notsupported || !warned_undef)
4108 1.1 christos {
4109 1.1.1.6 christos _bfd_error_handler
4110 1.1.1.6 christos /* xgettext:c-format */
4111 1.1.1.7 christos (_("%pB(%pA+%#" PRIx64 "): cannot handle %s for %s"),
4112 1.1 christos input_bfd,
4113 1.1 christos input_section,
4114 1.1.1.7 christos (uint64_t) rela->r_offset,
4115 1.1 christos howto->name,
4116 1.1 christos sym_name);
4117 1.1 christos bfd_set_error (bfd_error_bad_value);
4118 1.1 christos return FALSE;
4119 1.1 christos }
4120 1.1 christos }
4121 1.1 christos else
4122 1.1.1.5 christos (*info->callbacks->reloc_overflow)
4123 1.1.1.5 christos (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4124 1.1.1.5 christos (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4125 1.1 christos }
4126 1.1 christos
4127 1.1 christos return TRUE;
4128 1.1 christos }
4129 1.1 christos
4130 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
4131 1.1 christos dynamic sections here. */
4132 1.1 christos
4133 1.1 christos static bfd_boolean
4134 1.1 christos elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4135 1.1 christos struct bfd_link_info *info,
4136 1.1 christos struct elf_link_hash_entry *eh,
4137 1.1 christos Elf_Internal_Sym *sym)
4138 1.1 christos {
4139 1.1 christos struct elf32_hppa_link_hash_table *htab;
4140 1.1 christos Elf_Internal_Rela rela;
4141 1.1 christos bfd_byte *loc;
4142 1.1 christos
4143 1.1 christos htab = hppa_link_hash_table (info);
4144 1.1 christos if (htab == NULL)
4145 1.1 christos return FALSE;
4146 1.1 christos
4147 1.1 christos if (eh->plt.offset != (bfd_vma) -1)
4148 1.1 christos {
4149 1.1 christos bfd_vma value;
4150 1.1 christos
4151 1.1 christos if (eh->plt.offset & 1)
4152 1.1 christos abort ();
4153 1.1 christos
4154 1.1 christos /* This symbol has an entry in the procedure linkage table. Set
4155 1.1 christos it up.
4156 1.1 christos
4157 1.1 christos The format of a plt entry is
4158 1.1 christos <funcaddr>
4159 1.1 christos <__gp>
4160 1.1 christos */
4161 1.1 christos value = 0;
4162 1.1 christos if (eh->root.type == bfd_link_hash_defined
4163 1.1 christos || eh->root.type == bfd_link_hash_defweak)
4164 1.1 christos {
4165 1.1 christos value = eh->root.u.def.value;
4166 1.1 christos if (eh->root.u.def.section->output_section != NULL)
4167 1.1 christos value += (eh->root.u.def.section->output_offset
4168 1.1 christos + eh->root.u.def.section->output_section->vma);
4169 1.1 christos }
4170 1.1 christos
4171 1.1 christos /* Create a dynamic IPLT relocation for this entry. */
4172 1.1 christos rela.r_offset = (eh->plt.offset
4173 1.1.1.6 christos + htab->etab.splt->output_offset
4174 1.1.1.6 christos + htab->etab.splt->output_section->vma);
4175 1.1 christos if (eh->dynindx != -1)
4176 1.1 christos {
4177 1.1 christos rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4178 1.1 christos rela.r_addend = 0;
4179 1.1 christos }
4180 1.1 christos else
4181 1.1 christos {
4182 1.1 christos /* This symbol has been marked to become local, and is
4183 1.1 christos used by a plabel so must be kept in the .plt. */
4184 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4185 1.1 christos rela.r_addend = value;
4186 1.1 christos }
4187 1.1 christos
4188 1.1.1.6 christos loc = htab->etab.srelplt->contents;
4189 1.1.1.6 christos loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4190 1.1.1.6 christos bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4191 1.1 christos
4192 1.1 christos if (!eh->def_regular)
4193 1.1 christos {
4194 1.1 christos /* Mark the symbol as undefined, rather than as defined in
4195 1.1 christos the .plt section. Leave the value alone. */
4196 1.1 christos sym->st_shndx = SHN_UNDEF;
4197 1.1 christos }
4198 1.1 christos }
4199 1.1 christos
4200 1.1 christos if (eh->got.offset != (bfd_vma) -1
4201 1.1.1.7 christos && (hppa_elf_hash_entry (eh)->tls_type & GOT_NORMAL) != 0
4202 1.1.1.7 christos && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
4203 1.1 christos {
4204 1.1.1.7 christos bfd_boolean is_dyn = (eh->dynindx != -1
4205 1.1.1.7 christos && !SYMBOL_REFERENCES_LOCAL (info, eh));
4206 1.1 christos
4207 1.1.1.7 christos if (is_dyn || bfd_link_pic (info))
4208 1.1 christos {
4209 1.1.1.7 christos /* This symbol has an entry in the global offset table. Set
4210 1.1.1.7 christos it up. */
4211 1.1.1.7 christos
4212 1.1.1.7 christos rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4213 1.1.1.7 christos + htab->etab.sgot->output_offset
4214 1.1.1.7 christos + htab->etab.sgot->output_section->vma);
4215 1.1.1.7 christos
4216 1.1.1.7 christos /* If this is a -Bsymbolic link and the symbol is defined
4217 1.1.1.7 christos locally or was forced to be local because of a version
4218 1.1.1.7 christos file, we just want to emit a RELATIVE reloc. The entry
4219 1.1.1.7 christos in the global offset table will already have been
4220 1.1.1.7 christos initialized in the relocate_section function. */
4221 1.1.1.7 christos if (!is_dyn)
4222 1.1.1.7 christos {
4223 1.1.1.7 christos rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4224 1.1.1.7 christos rela.r_addend = (eh->root.u.def.value
4225 1.1.1.7 christos + eh->root.u.def.section->output_offset
4226 1.1.1.7 christos + eh->root.u.def.section->output_section->vma);
4227 1.1.1.7 christos }
4228 1.1.1.7 christos else
4229 1.1.1.7 christos {
4230 1.1.1.7 christos if ((eh->got.offset & 1) != 0)
4231 1.1.1.7 christos abort ();
4232 1.1 christos
4233 1.1.1.7 christos bfd_put_32 (output_bfd, 0,
4234 1.1.1.7 christos htab->etab.sgot->contents + (eh->got.offset & ~1));
4235 1.1.1.7 christos rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4236 1.1.1.7 christos rela.r_addend = 0;
4237 1.1.1.7 christos }
4238 1.1 christos
4239 1.1.1.7 christos loc = htab->etab.srelgot->contents;
4240 1.1.1.7 christos loc += (htab->etab.srelgot->reloc_count++
4241 1.1.1.7 christos * sizeof (Elf32_External_Rela));
4242 1.1.1.7 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4243 1.1.1.7 christos }
4244 1.1 christos }
4245 1.1 christos
4246 1.1 christos if (eh->needs_copy)
4247 1.1 christos {
4248 1.1 christos asection *sec;
4249 1.1 christos
4250 1.1 christos /* This symbol needs a copy reloc. Set it up. */
4251 1.1 christos
4252 1.1 christos if (! (eh->dynindx != -1
4253 1.1 christos && (eh->root.type == bfd_link_hash_defined
4254 1.1 christos || eh->root.type == bfd_link_hash_defweak)))
4255 1.1 christos abort ();
4256 1.1 christos
4257 1.1 christos rela.r_offset = (eh->root.u.def.value
4258 1.1 christos + eh->root.u.def.section->output_offset
4259 1.1 christos + eh->root.u.def.section->output_section->vma);
4260 1.1 christos rela.r_addend = 0;
4261 1.1 christos rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4262 1.1.1.6 christos if (eh->root.u.def.section == htab->etab.sdynrelro)
4263 1.1.1.6 christos sec = htab->etab.sreldynrelro;
4264 1.1.1.6 christos else
4265 1.1.1.6 christos sec = htab->etab.srelbss;
4266 1.1 christos loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4267 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4268 1.1 christos }
4269 1.1 christos
4270 1.1 christos /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4271 1.1.1.2 christos if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4272 1.1 christos {
4273 1.1 christos sym->st_shndx = SHN_ABS;
4274 1.1 christos }
4275 1.1 christos
4276 1.1 christos return TRUE;
4277 1.1 christos }
4278 1.1 christos
4279 1.1 christos /* Used to decide how to sort relocs in an optimal manner for the
4280 1.1 christos dynamic linker, before writing them out. */
4281 1.1 christos
4282 1.1 christos static enum elf_reloc_type_class
4283 1.1.1.3 christos elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4284 1.1.1.3 christos const asection *rel_sec ATTRIBUTE_UNUSED,
4285 1.1.1.3 christos const Elf_Internal_Rela *rela)
4286 1.1 christos {
4287 1.1 christos /* Handle TLS relocs first; we don't want them to be marked
4288 1.1 christos relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4289 1.1 christos check below. */
4290 1.1 christos switch ((int) ELF32_R_TYPE (rela->r_info))
4291 1.1 christos {
4292 1.1 christos case R_PARISC_TLS_DTPMOD32:
4293 1.1 christos case R_PARISC_TLS_DTPOFF32:
4294 1.1 christos case R_PARISC_TLS_TPREL32:
4295 1.1.1.7 christos return reloc_class_normal;
4296 1.1 christos }
4297 1.1 christos
4298 1.1 christos if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4299 1.1 christos return reloc_class_relative;
4300 1.1 christos
4301 1.1 christos switch ((int) ELF32_R_TYPE (rela->r_info))
4302 1.1 christos {
4303 1.1 christos case R_PARISC_IPLT:
4304 1.1 christos return reloc_class_plt;
4305 1.1 christos case R_PARISC_COPY:
4306 1.1 christos return reloc_class_copy;
4307 1.1 christos default:
4308 1.1 christos return reloc_class_normal;
4309 1.1 christos }
4310 1.1 christos }
4311 1.1 christos
4312 1.1 christos /* Finish up the dynamic sections. */
4313 1.1 christos
4314 1.1 christos static bfd_boolean
4315 1.1 christos elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4316 1.1 christos struct bfd_link_info *info)
4317 1.1 christos {
4318 1.1 christos bfd *dynobj;
4319 1.1 christos struct elf32_hppa_link_hash_table *htab;
4320 1.1 christos asection *sdyn;
4321 1.1.1.2 christos asection * sgot;
4322 1.1 christos
4323 1.1 christos htab = hppa_link_hash_table (info);
4324 1.1 christos if (htab == NULL)
4325 1.1 christos return FALSE;
4326 1.1 christos
4327 1.1 christos dynobj = htab->etab.dynobj;
4328 1.1 christos
4329 1.1.1.6 christos sgot = htab->etab.sgot;
4330 1.1.1.2 christos /* A broken linker script might have discarded the dynamic sections.
4331 1.1.1.2 christos Catch this here so that we do not seg-fault later on. */
4332 1.1.1.2 christos if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4333 1.1.1.2 christos return FALSE;
4334 1.1.1.2 christos
4335 1.1.1.2 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4336 1.1 christos
4337 1.1 christos if (htab->etab.dynamic_sections_created)
4338 1.1 christos {
4339 1.1 christos Elf32_External_Dyn *dyncon, *dynconend;
4340 1.1 christos
4341 1.1 christos if (sdyn == NULL)
4342 1.1 christos abort ();
4343 1.1 christos
4344 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
4345 1.1 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4346 1.1 christos for (; dyncon < dynconend; dyncon++)
4347 1.1 christos {
4348 1.1 christos Elf_Internal_Dyn dyn;
4349 1.1 christos asection *s;
4350 1.1 christos
4351 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4352 1.1 christos
4353 1.1 christos switch (dyn.d_tag)
4354 1.1 christos {
4355 1.1 christos default:
4356 1.1 christos continue;
4357 1.1 christos
4358 1.1 christos case DT_PLTGOT:
4359 1.1 christos /* Use PLTGOT to set the GOT register. */
4360 1.1 christos dyn.d_un.d_ptr = elf_gp (output_bfd);
4361 1.1 christos break;
4362 1.1 christos
4363 1.1 christos case DT_JMPREL:
4364 1.1.1.6 christos s = htab->etab.srelplt;
4365 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4366 1.1 christos break;
4367 1.1 christos
4368 1.1 christos case DT_PLTRELSZ:
4369 1.1.1.6 christos s = htab->etab.srelplt;
4370 1.1 christos dyn.d_un.d_val = s->size;
4371 1.1 christos break;
4372 1.1 christos }
4373 1.1 christos
4374 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4375 1.1 christos }
4376 1.1 christos }
4377 1.1 christos
4378 1.1.1.2 christos if (sgot != NULL && sgot->size != 0)
4379 1.1 christos {
4380 1.1 christos /* Fill in the first entry in the global offset table.
4381 1.1 christos We use it to point to our dynamic section, if we have one. */
4382 1.1 christos bfd_put_32 (output_bfd,
4383 1.1 christos sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4384 1.1.1.2 christos sgot->contents);
4385 1.1 christos
4386 1.1 christos /* The second entry is reserved for use by the dynamic linker. */
4387 1.1.1.2 christos memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4388 1.1 christos
4389 1.1 christos /* Set .got entry size. */
4390 1.1.1.2 christos elf_section_data (sgot->output_section)
4391 1.1 christos ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4392 1.1 christos }
4393 1.1 christos
4394 1.1.1.6 christos if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4395 1.1 christos {
4396 1.1.1.5 christos /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4397 1.1.1.5 christos plt stubs and as such the section does not hold a table of fixed-size
4398 1.1.1.5 christos entries. */
4399 1.1.1.6 christos elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4400 1.1 christos
4401 1.1 christos if (htab->need_plt_stub)
4402 1.1 christos {
4403 1.1 christos /* Set up the .plt stub. */
4404 1.1.1.6 christos memcpy (htab->etab.splt->contents
4405 1.1.1.6 christos + htab->etab.splt->size - sizeof (plt_stub),
4406 1.1 christos plt_stub, sizeof (plt_stub));
4407 1.1 christos
4408 1.1.1.6 christos if ((htab->etab.splt->output_offset
4409 1.1.1.6 christos + htab->etab.splt->output_section->vma
4410 1.1.1.6 christos + htab->etab.splt->size)
4411 1.1.1.2 christos != (sgot->output_offset
4412 1.1.1.2 christos + sgot->output_section->vma))
4413 1.1 christos {
4414 1.1.1.6 christos _bfd_error_handler
4415 1.1 christos (_(".got section not immediately after .plt section"));
4416 1.1 christos return FALSE;
4417 1.1 christos }
4418 1.1 christos }
4419 1.1 christos }
4420 1.1 christos
4421 1.1 christos return TRUE;
4422 1.1 christos }
4423 1.1 christos
4424 1.1 christos /* Called when writing out an object file to decide the type of a
4425 1.1 christos symbol. */
4426 1.1 christos static int
4427 1.1 christos elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4428 1.1 christos {
4429 1.1 christos if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4430 1.1 christos return STT_PARISC_MILLI;
4431 1.1 christos else
4432 1.1 christos return type;
4433 1.1 christos }
4434 1.1 christos
4435 1.1 christos /* Misc BFD support code. */
4436 1.1 christos #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4437 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4438 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4439 1.1 christos #define elf_info_to_howto elf_hppa_info_to_howto
4440 1.1 christos #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4441 1.1 christos
4442 1.1 christos /* Stuff for the BFD linker. */
4443 1.1 christos #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4444 1.1 christos #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4445 1.1 christos #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4446 1.1 christos #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4447 1.1 christos #define elf_backend_check_relocs elf32_hppa_check_relocs
4448 1.1.1.7 christos #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4449 1.1 christos #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4450 1.1 christos #define elf_backend_fake_sections elf_hppa_fake_sections
4451 1.1 christos #define elf_backend_relocate_section elf32_hppa_relocate_section
4452 1.1 christos #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4453 1.1 christos #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4454 1.1 christos #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4455 1.1 christos #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4456 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4457 1.1 christos #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4458 1.1 christos #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4459 1.1 christos #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4460 1.1 christos #define elf_backend_object_p elf32_hppa_object_p
4461 1.1 christos #define elf_backend_final_write_processing elf_hppa_final_write_processing
4462 1.1 christos #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4463 1.1 christos #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4464 1.1 christos #define elf_backend_action_discarded elf_hppa_action_discarded
4465 1.1 christos
4466 1.1 christos #define elf_backend_can_gc_sections 1
4467 1.1 christos #define elf_backend_can_refcount 1
4468 1.1 christos #define elf_backend_plt_alignment 2
4469 1.1 christos #define elf_backend_want_got_plt 0
4470 1.1 christos #define elf_backend_plt_readonly 0
4471 1.1 christos #define elf_backend_want_plt_sym 0
4472 1.1 christos #define elf_backend_got_header_size 8
4473 1.1.1.6 christos #define elf_backend_want_dynrelro 1
4474 1.1 christos #define elf_backend_rela_normal 1
4475 1.1.1.6 christos #define elf_backend_dtrel_excludes_plt 1
4476 1.1.1.6 christos #define elf_backend_no_page_alias 1
4477 1.1 christos
4478 1.1.1.4 christos #define TARGET_BIG_SYM hppa_elf32_vec
4479 1.1 christos #define TARGET_BIG_NAME "elf32-hppa"
4480 1.1 christos #define ELF_ARCH bfd_arch_hppa
4481 1.1 christos #define ELF_TARGET_ID HPPA32_ELF_DATA
4482 1.1 christos #define ELF_MACHINE_CODE EM_PARISC
4483 1.1 christos #define ELF_MAXPAGESIZE 0x1000
4484 1.1 christos #define ELF_OSABI ELFOSABI_HPUX
4485 1.1 christos #define elf32_bed elf32_hppa_hpux_bed
4486 1.1 christos
4487 1.1 christos #include "elf32-target.h"
4488 1.1 christos
4489 1.1 christos #undef TARGET_BIG_SYM
4490 1.1.1.4 christos #define TARGET_BIG_SYM hppa_elf32_linux_vec
4491 1.1 christos #undef TARGET_BIG_NAME
4492 1.1 christos #define TARGET_BIG_NAME "elf32-hppa-linux"
4493 1.1 christos #undef ELF_OSABI
4494 1.1.1.2 christos #define ELF_OSABI ELFOSABI_GNU
4495 1.1 christos #undef elf32_bed
4496 1.1 christos #define elf32_bed elf32_hppa_linux_bed
4497 1.1 christos
4498 1.1 christos #include "elf32-target.h"
4499 1.1 christos
4500 1.1 christos #undef TARGET_BIG_SYM
4501 1.1.1.4 christos #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4502 1.1 christos #undef TARGET_BIG_NAME
4503 1.1 christos #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4504 1.1 christos #undef ELF_OSABI
4505 1.1 christos #define ELF_OSABI ELFOSABI_NETBSD
4506 1.1 christos #undef elf32_bed
4507 1.1 christos #define elf32_bed elf32_hppa_netbsd_bed
4508 1.1 christos
4509 1.1 christos #include "elf32-target.h"
4510