elf32-hppa.c revision 1.1 1 1.1 christos /* BFD back-end for HP PA-RISC ELF files.
2 1.1 christos Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
3 1.1 christos 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 1.1 christos Free Software Foundation, Inc.
5 1.1 christos
6 1.1 christos Original code by
7 1.1 christos Center for Software Science
8 1.1 christos Department of Computer Science
9 1.1 christos University of Utah
10 1.1 christos Largely rewritten by Alan Modra <alan (at) linuxcare.com.au>
11 1.1 christos Naming cleanup by Carlos O'Donell <carlos (at) systemhalted.org>
12 1.1 christos TLS support written by Randolph Chung <tausq (at) debian.org>
13 1.1 christos
14 1.1 christos This file is part of BFD, the Binary File Descriptor library.
15 1.1 christos
16 1.1 christos This program is free software; you can redistribute it and/or modify
17 1.1 christos it under the terms of the GNU General Public License as published by
18 1.1 christos the Free Software Foundation; either version 3 of the License, or
19 1.1 christos (at your option) any later version.
20 1.1 christos
21 1.1 christos This program is distributed in the hope that it will be useful,
22 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
23 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 1.1 christos GNU General Public License for more details.
25 1.1 christos
26 1.1 christos You should have received a copy of the GNU General Public License
27 1.1 christos along with this program; if not, write to the Free Software
28 1.1 christos Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
29 1.1 christos MA 02110-1301, USA. */
30 1.1 christos
31 1.1 christos #include "sysdep.h"
32 1.1 christos #include "bfd.h"
33 1.1 christos #include "libbfd.h"
34 1.1 christos #include "elf-bfd.h"
35 1.1 christos #include "elf/hppa.h"
36 1.1 christos #include "libhppa.h"
37 1.1 christos #include "elf32-hppa.h"
38 1.1 christos #define ARCH_SIZE 32
39 1.1 christos #include "elf32-hppa.h"
40 1.1 christos #include "elf-hppa.h"
41 1.1 christos
42 1.1 christos /* In order to gain some understanding of code in this file without
43 1.1 christos knowing all the intricate details of the linker, note the
44 1.1 christos following:
45 1.1 christos
46 1.1 christos Functions named elf32_hppa_* are called by external routines, other
47 1.1 christos functions are only called locally. elf32_hppa_* functions appear
48 1.1 christos in this file more or less in the order in which they are called
49 1.1 christos from external routines. eg. elf32_hppa_check_relocs is called
50 1.1 christos early in the link process, elf32_hppa_finish_dynamic_sections is
51 1.1 christos one of the last functions. */
52 1.1 christos
53 1.1 christos /* We use two hash tables to hold information for linking PA ELF objects.
54 1.1 christos
55 1.1 christos The first is the elf32_hppa_link_hash_table which is derived
56 1.1 christos from the standard ELF linker hash table. We use this as a place to
57 1.1 christos attach other hash tables and static information.
58 1.1 christos
59 1.1 christos The second is the stub hash table which is derived from the
60 1.1 christos base BFD hash table. The stub hash table holds the information
61 1.1 christos necessary to build the linker stubs during a link.
62 1.1 christos
63 1.1 christos There are a number of different stubs generated by the linker.
64 1.1 christos
65 1.1 christos Long branch stub:
66 1.1 christos : ldil LR'X,%r1
67 1.1 christos : be,n RR'X(%sr4,%r1)
68 1.1 christos
69 1.1 christos PIC long branch stub:
70 1.1 christos : b,l .+8,%r1
71 1.1 christos : addil LR'X - ($PIC_pcrel$0 - 4),%r1
72 1.1 christos : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
73 1.1 christos
74 1.1 christos Import stub to call shared library routine from normal object file
75 1.1 christos (single sub-space version)
76 1.1 christos : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
77 1.1 christos : ldw RR'lt_ptr+ltoff(%r1),%r21
78 1.1 christos : bv %r0(%r21)
79 1.1 christos : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
80 1.1 christos
81 1.1 christos Import stub to call shared library routine from shared library
82 1.1 christos (single sub-space version)
83 1.1 christos : addil LR'ltoff,%r19 ; get procedure entry point
84 1.1 christos : ldw RR'ltoff(%r1),%r21
85 1.1 christos : bv %r0(%r21)
86 1.1 christos : ldw RR'ltoff+4(%r1),%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 christos : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
91 1.1 christos : ldw RR'lt_ptr+ltoff(%r1),%r21
92 1.1 christos : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
93 1.1 christos : ldsid (%r21),%r1
94 1.1 christos : mtsp %r1,%sr0
95 1.1 christos : be 0(%sr0,%r21) ; branch to target
96 1.1 christos : stw %rp,-24(%sp) ; save rp
97 1.1 christos
98 1.1 christos Import stub to call shared library routine from shared library
99 1.1 christos (multiple sub-space support)
100 1.1 christos : addil LR'ltoff,%r19 ; get procedure entry point
101 1.1 christos : ldw RR'ltoff(%r1),%r21
102 1.1 christos : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
103 1.1 christos : ldsid (%r21),%r1
104 1.1 christos : mtsp %r1,%sr0
105 1.1 christos : be 0(%sr0,%r21) ; branch to target
106 1.1 christos : stw %rp,-24(%sp) ; save rp
107 1.1 christos
108 1.1 christos Export stub to return from shared lib routine (multiple sub-space support)
109 1.1 christos One of these is created for each exported procedure in a shared
110 1.1 christos library (and stored in the shared lib). Shared lib routines are
111 1.1 christos called via the first instruction in the export stub so that we can
112 1.1 christos do an inter-space return. Not required for single sub-space.
113 1.1 christos : bl,n X,%rp ; trap the return
114 1.1 christos : nop
115 1.1 christos : ldw -24(%sp),%rp ; restore the original rp
116 1.1 christos : ldsid (%rp),%r1
117 1.1 christos : mtsp %r1,%sr0
118 1.1 christos : be,n 0(%sr0,%rp) ; inter-space return. */
119 1.1 christos
120 1.1 christos
121 1.1 christos /* Variable names follow a coding style.
122 1.1 christos Please follow this (Apps Hungarian) style:
123 1.1 christos
124 1.1 christos Structure/Variable Prefix
125 1.1 christos elf_link_hash_table "etab"
126 1.1 christos elf_link_hash_entry "eh"
127 1.1 christos
128 1.1 christos elf32_hppa_link_hash_table "htab"
129 1.1 christos elf32_hppa_link_hash_entry "hh"
130 1.1 christos
131 1.1 christos bfd_hash_table "btab"
132 1.1 christos bfd_hash_entry "bh"
133 1.1 christos
134 1.1 christos bfd_hash_table containing stubs "bstab"
135 1.1 christos elf32_hppa_stub_hash_entry "hsh"
136 1.1 christos
137 1.1 christos elf32_hppa_dyn_reloc_entry "hdh"
138 1.1 christos
139 1.1 christos Always remember to use GNU Coding Style. */
140 1.1 christos
141 1.1 christos #define PLT_ENTRY_SIZE 8
142 1.1 christos #define GOT_ENTRY_SIZE 4
143 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
144 1.1 christos
145 1.1 christos static const bfd_byte plt_stub[] =
146 1.1 christos {
147 1.1 christos 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
148 1.1 christos 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
149 1.1 christos 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
150 1.1 christos #define PLT_STUB_ENTRY (3*4)
151 1.1 christos 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
152 1.1 christos 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
153 1.1 christos 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
154 1.1 christos 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
155 1.1 christos };
156 1.1 christos
157 1.1 christos /* Section name for stubs is the associated section name plus this
158 1.1 christos string. */
159 1.1 christos #define STUB_SUFFIX ".stub"
160 1.1 christos
161 1.1 christos /* We don't need to copy certain PC- or GP-relative dynamic relocs
162 1.1 christos into a shared object's dynamic section. All the relocs of the
163 1.1 christos limited class we are interested in, are absolute. */
164 1.1 christos #ifndef RELATIVE_DYNRELOCS
165 1.1 christos #define RELATIVE_DYNRELOCS 0
166 1.1 christos #define IS_ABSOLUTE_RELOC(r_type) 1
167 1.1 christos #endif
168 1.1 christos
169 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
170 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
171 1.1 christos section, and instead use a dynamic relocation to point into the
172 1.1 christos shared lib. */
173 1.1 christos #define ELIMINATE_COPY_RELOCS 1
174 1.1 christos
175 1.1 christos enum elf32_hppa_stub_type
176 1.1 christos {
177 1.1 christos hppa_stub_long_branch,
178 1.1 christos hppa_stub_long_branch_shared,
179 1.1 christos hppa_stub_import,
180 1.1 christos hppa_stub_import_shared,
181 1.1 christos hppa_stub_export,
182 1.1 christos hppa_stub_none
183 1.1 christos };
184 1.1 christos
185 1.1 christos struct elf32_hppa_stub_hash_entry
186 1.1 christos {
187 1.1 christos /* Base hash table entry structure. */
188 1.1 christos struct bfd_hash_entry bh_root;
189 1.1 christos
190 1.1 christos /* The stub section. */
191 1.1 christos asection *stub_sec;
192 1.1 christos
193 1.1 christos /* Offset within stub_sec of the beginning of this stub. */
194 1.1 christos bfd_vma stub_offset;
195 1.1 christos
196 1.1 christos /* Given the symbol's value and its section we can determine its final
197 1.1 christos value when building the stubs (so the stub knows where to jump. */
198 1.1 christos bfd_vma target_value;
199 1.1 christos asection *target_section;
200 1.1 christos
201 1.1 christos enum elf32_hppa_stub_type stub_type;
202 1.1 christos
203 1.1 christos /* The symbol table entry, if any, that this was derived from. */
204 1.1 christos struct elf32_hppa_link_hash_entry *hh;
205 1.1 christos
206 1.1 christos /* Where this stub is being called from, or, in the case of combined
207 1.1 christos stub sections, the first input section in the group. */
208 1.1 christos asection *id_sec;
209 1.1 christos };
210 1.1 christos
211 1.1 christos struct elf32_hppa_link_hash_entry
212 1.1 christos {
213 1.1 christos struct elf_link_hash_entry eh;
214 1.1 christos
215 1.1 christos /* A pointer to the most recently used stub hash entry against this
216 1.1 christos symbol. */
217 1.1 christos struct elf32_hppa_stub_hash_entry *hsh_cache;
218 1.1 christos
219 1.1 christos /* Used to count relocations for delayed sizing of relocation
220 1.1 christos sections. */
221 1.1 christos struct elf32_hppa_dyn_reloc_entry
222 1.1 christos {
223 1.1 christos /* Next relocation in the chain. */
224 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_next;
225 1.1 christos
226 1.1 christos /* The input section of the reloc. */
227 1.1 christos asection *sec;
228 1.1 christos
229 1.1 christos /* Number of relocs copied in this section. */
230 1.1 christos bfd_size_type count;
231 1.1 christos
232 1.1 christos #if RELATIVE_DYNRELOCS
233 1.1 christos /* Number of relative relocs copied for the input section. */
234 1.1 christos bfd_size_type relative_count;
235 1.1 christos #endif
236 1.1 christos } *dyn_relocs;
237 1.1 christos
238 1.1 christos enum
239 1.1 christos {
240 1.1 christos GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_GD = 2, GOT_TLS_LDM = 4, GOT_TLS_IE = 8
241 1.1 christos } tls_type;
242 1.1 christos
243 1.1 christos /* Set if this symbol is used by a plabel reloc. */
244 1.1 christos unsigned int plabel:1;
245 1.1 christos };
246 1.1 christos
247 1.1 christos struct elf32_hppa_link_hash_table
248 1.1 christos {
249 1.1 christos /* The main hash table. */
250 1.1 christos struct elf_link_hash_table etab;
251 1.1 christos
252 1.1 christos /* The stub hash table. */
253 1.1 christos struct bfd_hash_table bstab;
254 1.1 christos
255 1.1 christos /* Linker stub bfd. */
256 1.1 christos bfd *stub_bfd;
257 1.1 christos
258 1.1 christos /* Linker call-backs. */
259 1.1 christos asection * (*add_stub_section) (const char *, asection *);
260 1.1 christos void (*layout_sections_again) (void);
261 1.1 christos
262 1.1 christos /* Array to keep track of which stub sections have been created, and
263 1.1 christos information on stub grouping. */
264 1.1 christos struct map_stub
265 1.1 christos {
266 1.1 christos /* This is the section to which stubs in the group will be
267 1.1 christos attached. */
268 1.1 christos asection *link_sec;
269 1.1 christos /* The stub section. */
270 1.1 christos asection *stub_sec;
271 1.1 christos } *stub_group;
272 1.1 christos
273 1.1 christos /* Assorted information used by elf32_hppa_size_stubs. */
274 1.1 christos unsigned int bfd_count;
275 1.1 christos int top_index;
276 1.1 christos asection **input_list;
277 1.1 christos Elf_Internal_Sym **all_local_syms;
278 1.1 christos
279 1.1 christos /* Short-cuts to get to dynamic linker sections. */
280 1.1 christos asection *sgot;
281 1.1 christos asection *srelgot;
282 1.1 christos asection *splt;
283 1.1 christos asection *srelplt;
284 1.1 christos asection *sdynbss;
285 1.1 christos asection *srelbss;
286 1.1 christos
287 1.1 christos /* Used during a final link to store the base of the text and data
288 1.1 christos segments so that we can perform SEGREL relocations. */
289 1.1 christos bfd_vma text_segment_base;
290 1.1 christos bfd_vma data_segment_base;
291 1.1 christos
292 1.1 christos /* Whether we support multiple sub-spaces for shared libs. */
293 1.1 christos unsigned int multi_subspace:1;
294 1.1 christos
295 1.1 christos /* Flags set when various size branches are detected. Used to
296 1.1 christos select suitable defaults for the stub group size. */
297 1.1 christos unsigned int has_12bit_branch:1;
298 1.1 christos unsigned int has_17bit_branch:1;
299 1.1 christos unsigned int has_22bit_branch:1;
300 1.1 christos
301 1.1 christos /* Set if we need a .plt stub to support lazy dynamic linking. */
302 1.1 christos unsigned int need_plt_stub:1;
303 1.1 christos
304 1.1 christos /* Small local sym cache. */
305 1.1 christos struct sym_cache sym_cache;
306 1.1 christos
307 1.1 christos /* Data for LDM relocations. */
308 1.1 christos union
309 1.1 christos {
310 1.1 christos bfd_signed_vma refcount;
311 1.1 christos bfd_vma offset;
312 1.1 christos } tls_ldm_got;
313 1.1 christos };
314 1.1 christos
315 1.1 christos /* Various hash macros and functions. */
316 1.1 christos #define hppa_link_hash_table(p) \
317 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
318 1.1 christos == HPPA32_ELF_DATA ? ((struct elf32_hppa_link_hash_table *) ((p)->hash)) : NULL)
319 1.1 christos
320 1.1 christos #define hppa_elf_hash_entry(ent) \
321 1.1 christos ((struct elf32_hppa_link_hash_entry *)(ent))
322 1.1 christos
323 1.1 christos #define hppa_stub_hash_entry(ent) \
324 1.1 christos ((struct elf32_hppa_stub_hash_entry *)(ent))
325 1.1 christos
326 1.1 christos #define hppa_stub_hash_lookup(table, string, create, copy) \
327 1.1 christos ((struct elf32_hppa_stub_hash_entry *) \
328 1.1 christos bfd_hash_lookup ((table), (string), (create), (copy)))
329 1.1 christos
330 1.1 christos #define hppa_elf_local_got_tls_type(abfd) \
331 1.1 christos ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
332 1.1 christos
333 1.1 christos #define hh_name(hh) \
334 1.1 christos (hh ? hh->eh.root.root.string : "<undef>")
335 1.1 christos
336 1.1 christos #define eh_name(eh) \
337 1.1 christos (eh ? eh->root.root.string : "<undef>")
338 1.1 christos
339 1.1 christos /* Assorted hash table functions. */
340 1.1 christos
341 1.1 christos /* Initialize an entry in the stub hash table. */
342 1.1 christos
343 1.1 christos static struct bfd_hash_entry *
344 1.1 christos stub_hash_newfunc (struct bfd_hash_entry *entry,
345 1.1 christos struct bfd_hash_table *table,
346 1.1 christos const char *string)
347 1.1 christos {
348 1.1 christos /* Allocate the structure if it has not already been allocated by a
349 1.1 christos subclass. */
350 1.1 christos if (entry == NULL)
351 1.1 christos {
352 1.1 christos entry = bfd_hash_allocate (table,
353 1.1 christos sizeof (struct elf32_hppa_stub_hash_entry));
354 1.1 christos if (entry == NULL)
355 1.1 christos return entry;
356 1.1 christos }
357 1.1 christos
358 1.1 christos /* Call the allocation method of the superclass. */
359 1.1 christos entry = bfd_hash_newfunc (entry, table, string);
360 1.1 christos if (entry != NULL)
361 1.1 christos {
362 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
363 1.1 christos
364 1.1 christos /* Initialize the local fields. */
365 1.1 christos hsh = hppa_stub_hash_entry (entry);
366 1.1 christos hsh->stub_sec = NULL;
367 1.1 christos hsh->stub_offset = 0;
368 1.1 christos hsh->target_value = 0;
369 1.1 christos hsh->target_section = NULL;
370 1.1 christos hsh->stub_type = hppa_stub_long_branch;
371 1.1 christos hsh->hh = NULL;
372 1.1 christos hsh->id_sec = NULL;
373 1.1 christos }
374 1.1 christos
375 1.1 christos return entry;
376 1.1 christos }
377 1.1 christos
378 1.1 christos /* Initialize an entry in the link hash table. */
379 1.1 christos
380 1.1 christos static struct bfd_hash_entry *
381 1.1 christos hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
382 1.1 christos struct bfd_hash_table *table,
383 1.1 christos const char *string)
384 1.1 christos {
385 1.1 christos /* Allocate the structure if it has not already been allocated by a
386 1.1 christos subclass. */
387 1.1 christos if (entry == NULL)
388 1.1 christos {
389 1.1 christos entry = bfd_hash_allocate (table,
390 1.1 christos sizeof (struct elf32_hppa_link_hash_entry));
391 1.1 christos if (entry == NULL)
392 1.1 christos return entry;
393 1.1 christos }
394 1.1 christos
395 1.1 christos /* Call the allocation method of the superclass. */
396 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
397 1.1 christos if (entry != NULL)
398 1.1 christos {
399 1.1 christos struct elf32_hppa_link_hash_entry *hh;
400 1.1 christos
401 1.1 christos /* Initialize the local fields. */
402 1.1 christos hh = hppa_elf_hash_entry (entry);
403 1.1 christos hh->hsh_cache = NULL;
404 1.1 christos hh->dyn_relocs = NULL;
405 1.1 christos hh->plabel = 0;
406 1.1 christos hh->tls_type = GOT_UNKNOWN;
407 1.1 christos }
408 1.1 christos
409 1.1 christos return entry;
410 1.1 christos }
411 1.1 christos
412 1.1 christos /* Create the derived linker hash table. The PA ELF port uses the derived
413 1.1 christos hash table to keep information specific to the PA ELF linker (without
414 1.1 christos using static variables). */
415 1.1 christos
416 1.1 christos static struct bfd_link_hash_table *
417 1.1 christos elf32_hppa_link_hash_table_create (bfd *abfd)
418 1.1 christos {
419 1.1 christos struct elf32_hppa_link_hash_table *htab;
420 1.1 christos bfd_size_type amt = sizeof (*htab);
421 1.1 christos
422 1.1 christos htab = bfd_malloc (amt);
423 1.1 christos if (htab == NULL)
424 1.1 christos return NULL;
425 1.1 christos
426 1.1 christos if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
427 1.1 christos sizeof (struct elf32_hppa_link_hash_entry),
428 1.1 christos HPPA32_ELF_DATA))
429 1.1 christos {
430 1.1 christos free (htab);
431 1.1 christos return NULL;
432 1.1 christos }
433 1.1 christos
434 1.1 christos /* Init the stub hash table too. */
435 1.1 christos if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
436 1.1 christos sizeof (struct elf32_hppa_stub_hash_entry)))
437 1.1 christos return NULL;
438 1.1 christos
439 1.1 christos htab->stub_bfd = NULL;
440 1.1 christos htab->add_stub_section = NULL;
441 1.1 christos htab->layout_sections_again = NULL;
442 1.1 christos htab->stub_group = NULL;
443 1.1 christos htab->sgot = NULL;
444 1.1 christos htab->srelgot = NULL;
445 1.1 christos htab->splt = NULL;
446 1.1 christos htab->srelplt = NULL;
447 1.1 christos htab->sdynbss = NULL;
448 1.1 christos htab->srelbss = NULL;
449 1.1 christos htab->text_segment_base = (bfd_vma) -1;
450 1.1 christos htab->data_segment_base = (bfd_vma) -1;
451 1.1 christos htab->multi_subspace = 0;
452 1.1 christos htab->has_12bit_branch = 0;
453 1.1 christos htab->has_17bit_branch = 0;
454 1.1 christos htab->has_22bit_branch = 0;
455 1.1 christos htab->need_plt_stub = 0;
456 1.1 christos htab->sym_cache.abfd = NULL;
457 1.1 christos htab->tls_ldm_got.refcount = 0;
458 1.1 christos
459 1.1 christos return &htab->etab.root;
460 1.1 christos }
461 1.1 christos
462 1.1 christos /* Free the derived linker hash table. */
463 1.1 christos
464 1.1 christos static void
465 1.1 christos elf32_hppa_link_hash_table_free (struct bfd_link_hash_table *btab)
466 1.1 christos {
467 1.1 christos struct elf32_hppa_link_hash_table *htab
468 1.1 christos = (struct elf32_hppa_link_hash_table *) btab;
469 1.1 christos
470 1.1 christos bfd_hash_table_free (&htab->bstab);
471 1.1 christos _bfd_generic_link_hash_table_free (btab);
472 1.1 christos }
473 1.1 christos
474 1.1 christos /* Build a name for an entry in the stub hash table. */
475 1.1 christos
476 1.1 christos static char *
477 1.1 christos hppa_stub_name (const asection *input_section,
478 1.1 christos const asection *sym_sec,
479 1.1 christos const struct elf32_hppa_link_hash_entry *hh,
480 1.1 christos const Elf_Internal_Rela *rela)
481 1.1 christos {
482 1.1 christos char *stub_name;
483 1.1 christos bfd_size_type len;
484 1.1 christos
485 1.1 christos if (hh)
486 1.1 christos {
487 1.1 christos len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
488 1.1 christos stub_name = bfd_malloc (len);
489 1.1 christos if (stub_name != NULL)
490 1.1 christos sprintf (stub_name, "%08x_%s+%x",
491 1.1 christos input_section->id & 0xffffffff,
492 1.1 christos hh_name (hh),
493 1.1 christos (int) rela->r_addend & 0xffffffff);
494 1.1 christos }
495 1.1 christos else
496 1.1 christos {
497 1.1 christos len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
498 1.1 christos stub_name = bfd_malloc (len);
499 1.1 christos if (stub_name != NULL)
500 1.1 christos sprintf (stub_name, "%08x_%x:%x+%x",
501 1.1 christos input_section->id & 0xffffffff,
502 1.1 christos sym_sec->id & 0xffffffff,
503 1.1 christos (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
504 1.1 christos (int) rela->r_addend & 0xffffffff);
505 1.1 christos }
506 1.1 christos return stub_name;
507 1.1 christos }
508 1.1 christos
509 1.1 christos /* Look up an entry in the stub hash. Stub entries are cached because
510 1.1 christos creating the stub name takes a bit of time. */
511 1.1 christos
512 1.1 christos static struct elf32_hppa_stub_hash_entry *
513 1.1 christos hppa_get_stub_entry (const asection *input_section,
514 1.1 christos const asection *sym_sec,
515 1.1 christos struct elf32_hppa_link_hash_entry *hh,
516 1.1 christos const Elf_Internal_Rela *rela,
517 1.1 christos struct elf32_hppa_link_hash_table *htab)
518 1.1 christos {
519 1.1 christos struct elf32_hppa_stub_hash_entry *hsh_entry;
520 1.1 christos const asection *id_sec;
521 1.1 christos
522 1.1 christos /* If this input section is part of a group of sections sharing one
523 1.1 christos stub section, then use the id of the first section in the group.
524 1.1 christos Stub names need to include a section id, as there may well be
525 1.1 christos more than one stub used to reach say, printf, and we need to
526 1.1 christos distinguish between them. */
527 1.1 christos id_sec = htab->stub_group[input_section->id].link_sec;
528 1.1 christos
529 1.1 christos if (hh != NULL && hh->hsh_cache != NULL
530 1.1 christos && hh->hsh_cache->hh == hh
531 1.1 christos && hh->hsh_cache->id_sec == id_sec)
532 1.1 christos {
533 1.1 christos hsh_entry = hh->hsh_cache;
534 1.1 christos }
535 1.1 christos else
536 1.1 christos {
537 1.1 christos char *stub_name;
538 1.1 christos
539 1.1 christos stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
540 1.1 christos if (stub_name == NULL)
541 1.1 christos return NULL;
542 1.1 christos
543 1.1 christos hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
544 1.1 christos stub_name, FALSE, FALSE);
545 1.1 christos if (hh != NULL)
546 1.1 christos hh->hsh_cache = hsh_entry;
547 1.1 christos
548 1.1 christos free (stub_name);
549 1.1 christos }
550 1.1 christos
551 1.1 christos return hsh_entry;
552 1.1 christos }
553 1.1 christos
554 1.1 christos /* Add a new stub entry to the stub hash. Not all fields of the new
555 1.1 christos stub entry are initialised. */
556 1.1 christos
557 1.1 christos static struct elf32_hppa_stub_hash_entry *
558 1.1 christos hppa_add_stub (const char *stub_name,
559 1.1 christos asection *section,
560 1.1 christos struct elf32_hppa_link_hash_table *htab)
561 1.1 christos {
562 1.1 christos asection *link_sec;
563 1.1 christos asection *stub_sec;
564 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
565 1.1 christos
566 1.1 christos link_sec = htab->stub_group[section->id].link_sec;
567 1.1 christos stub_sec = htab->stub_group[section->id].stub_sec;
568 1.1 christos if (stub_sec == NULL)
569 1.1 christos {
570 1.1 christos stub_sec = htab->stub_group[link_sec->id].stub_sec;
571 1.1 christos if (stub_sec == NULL)
572 1.1 christos {
573 1.1 christos size_t namelen;
574 1.1 christos bfd_size_type len;
575 1.1 christos char *s_name;
576 1.1 christos
577 1.1 christos namelen = strlen (link_sec->name);
578 1.1 christos len = namelen + sizeof (STUB_SUFFIX);
579 1.1 christos s_name = bfd_alloc (htab->stub_bfd, len);
580 1.1 christos if (s_name == NULL)
581 1.1 christos return NULL;
582 1.1 christos
583 1.1 christos memcpy (s_name, link_sec->name, namelen);
584 1.1 christos memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
585 1.1 christos stub_sec = (*htab->add_stub_section) (s_name, link_sec);
586 1.1 christos if (stub_sec == NULL)
587 1.1 christos return NULL;
588 1.1 christos htab->stub_group[link_sec->id].stub_sec = stub_sec;
589 1.1 christos }
590 1.1 christos htab->stub_group[section->id].stub_sec = stub_sec;
591 1.1 christos }
592 1.1 christos
593 1.1 christos /* Enter this entry into the linker stub hash table. */
594 1.1 christos hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
595 1.1 christos TRUE, FALSE);
596 1.1 christos if (hsh == NULL)
597 1.1 christos {
598 1.1 christos (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
599 1.1 christos section->owner,
600 1.1 christos stub_name);
601 1.1 christos return NULL;
602 1.1 christos }
603 1.1 christos
604 1.1 christos hsh->stub_sec = stub_sec;
605 1.1 christos hsh->stub_offset = 0;
606 1.1 christos hsh->id_sec = link_sec;
607 1.1 christos return hsh;
608 1.1 christos }
609 1.1 christos
610 1.1 christos /* Determine the type of stub needed, if any, for a call. */
611 1.1 christos
612 1.1 christos static enum elf32_hppa_stub_type
613 1.1 christos hppa_type_of_stub (asection *input_sec,
614 1.1 christos const Elf_Internal_Rela *rela,
615 1.1 christos struct elf32_hppa_link_hash_entry *hh,
616 1.1 christos bfd_vma destination,
617 1.1 christos struct bfd_link_info *info)
618 1.1 christos {
619 1.1 christos bfd_vma location;
620 1.1 christos bfd_vma branch_offset;
621 1.1 christos bfd_vma max_branch_offset;
622 1.1 christos unsigned int r_type;
623 1.1 christos
624 1.1 christos if (hh != NULL
625 1.1 christos && hh->eh.plt.offset != (bfd_vma) -1
626 1.1 christos && hh->eh.dynindx != -1
627 1.1 christos && !hh->plabel
628 1.1 christos && (info->shared
629 1.1 christos || !hh->eh.def_regular
630 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak))
631 1.1 christos {
632 1.1 christos /* We need an import stub. Decide between hppa_stub_import
633 1.1 christos and hppa_stub_import_shared later. */
634 1.1 christos return hppa_stub_import;
635 1.1 christos }
636 1.1 christos
637 1.1 christos /* Determine where the call point is. */
638 1.1 christos location = (input_sec->output_offset
639 1.1 christos + input_sec->output_section->vma
640 1.1 christos + rela->r_offset);
641 1.1 christos
642 1.1 christos branch_offset = destination - location - 8;
643 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
644 1.1 christos
645 1.1 christos /* Determine if a long branch stub is needed. parisc branch offsets
646 1.1 christos are relative to the second instruction past the branch, ie. +8
647 1.1 christos bytes on from the branch instruction location. The offset is
648 1.1 christos signed and counts in units of 4 bytes. */
649 1.1 christos if (r_type == (unsigned int) R_PARISC_PCREL17F)
650 1.1 christos max_branch_offset = (1 << (17 - 1)) << 2;
651 1.1 christos
652 1.1 christos else if (r_type == (unsigned int) R_PARISC_PCREL12F)
653 1.1 christos max_branch_offset = (1 << (12 - 1)) << 2;
654 1.1 christos
655 1.1 christos else /* R_PARISC_PCREL22F. */
656 1.1 christos max_branch_offset = (1 << (22 - 1)) << 2;
657 1.1 christos
658 1.1 christos if (branch_offset + max_branch_offset >= 2*max_branch_offset)
659 1.1 christos return hppa_stub_long_branch;
660 1.1 christos
661 1.1 christos return hppa_stub_none;
662 1.1 christos }
663 1.1 christos
664 1.1 christos /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
665 1.1 christos IN_ARG contains the link info pointer. */
666 1.1 christos
667 1.1 christos #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
668 1.1 christos #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
669 1.1 christos
670 1.1 christos #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
671 1.1 christos #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
672 1.1 christos #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
673 1.1 christos
674 1.1 christos #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
675 1.1 christos #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
676 1.1 christos #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
677 1.1 christos #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
678 1.1 christos
679 1.1 christos #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
680 1.1 christos #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
681 1.1 christos
682 1.1 christos #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
683 1.1 christos #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
684 1.1 christos #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
685 1.1 christos #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
686 1.1 christos
687 1.1 christos #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
688 1.1 christos #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
689 1.1 christos #define NOP 0x08000240 /* nop */
690 1.1 christos #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
691 1.1 christos #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
692 1.1 christos #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
693 1.1 christos
694 1.1 christos #ifndef R19_STUBS
695 1.1 christos #define R19_STUBS 1
696 1.1 christos #endif
697 1.1 christos
698 1.1 christos #if R19_STUBS
699 1.1 christos #define LDW_R1_DLT LDW_R1_R19
700 1.1 christos #else
701 1.1 christos #define LDW_R1_DLT LDW_R1_DP
702 1.1 christos #endif
703 1.1 christos
704 1.1 christos static bfd_boolean
705 1.1 christos hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
706 1.1 christos {
707 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
708 1.1 christos struct bfd_link_info *info;
709 1.1 christos struct elf32_hppa_link_hash_table *htab;
710 1.1 christos asection *stub_sec;
711 1.1 christos bfd *stub_bfd;
712 1.1 christos bfd_byte *loc;
713 1.1 christos bfd_vma sym_value;
714 1.1 christos bfd_vma insn;
715 1.1 christos bfd_vma off;
716 1.1 christos int val;
717 1.1 christos int size;
718 1.1 christos
719 1.1 christos /* Massage our args to the form they really have. */
720 1.1 christos hsh = hppa_stub_hash_entry (bh);
721 1.1 christos info = (struct bfd_link_info *)in_arg;
722 1.1 christos
723 1.1 christos htab = hppa_link_hash_table (info);
724 1.1 christos if (htab == NULL)
725 1.1 christos return FALSE;
726 1.1 christos
727 1.1 christos stub_sec = hsh->stub_sec;
728 1.1 christos
729 1.1 christos /* Make a note of the offset within the stubs for this entry. */
730 1.1 christos hsh->stub_offset = stub_sec->size;
731 1.1 christos loc = stub_sec->contents + hsh->stub_offset;
732 1.1 christos
733 1.1 christos stub_bfd = stub_sec->owner;
734 1.1 christos
735 1.1 christos switch (hsh->stub_type)
736 1.1 christos {
737 1.1 christos case hppa_stub_long_branch:
738 1.1 christos /* Create the long branch. A long branch is formed with "ldil"
739 1.1 christos loading the upper bits of the target address into a register,
740 1.1 christos then branching with "be" which adds in the lower bits.
741 1.1 christos The "be" has its delay slot nullified. */
742 1.1 christos sym_value = (hsh->target_value
743 1.1 christos + hsh->target_section->output_offset
744 1.1 christos + hsh->target_section->output_section->vma);
745 1.1 christos
746 1.1 christos val = hppa_field_adjust (sym_value, 0, e_lrsel);
747 1.1 christos insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
748 1.1 christos bfd_put_32 (stub_bfd, insn, loc);
749 1.1 christos
750 1.1 christos val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
751 1.1 christos insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
752 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 4);
753 1.1 christos
754 1.1 christos size = 8;
755 1.1 christos break;
756 1.1 christos
757 1.1 christos case hppa_stub_long_branch_shared:
758 1.1 christos /* Branches are relative. This is where we are going to. */
759 1.1 christos sym_value = (hsh->target_value
760 1.1 christos + hsh->target_section->output_offset
761 1.1 christos + hsh->target_section->output_section->vma);
762 1.1 christos
763 1.1 christos /* And this is where we are coming from, more or less. */
764 1.1 christos sym_value -= (hsh->stub_offset
765 1.1 christos + stub_sec->output_offset
766 1.1 christos + stub_sec->output_section->vma);
767 1.1 christos
768 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
769 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
770 1.1 christos insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
771 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 4);
772 1.1 christos
773 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
774 1.1 christos insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
775 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 8);
776 1.1 christos size = 12;
777 1.1 christos break;
778 1.1 christos
779 1.1 christos case hppa_stub_import:
780 1.1 christos case hppa_stub_import_shared:
781 1.1 christos off = hsh->hh->eh.plt.offset;
782 1.1 christos if (off >= (bfd_vma) -2)
783 1.1 christos abort ();
784 1.1 christos
785 1.1 christos off &= ~ (bfd_vma) 1;
786 1.1 christos sym_value = (off
787 1.1 christos + htab->splt->output_offset
788 1.1 christos + htab->splt->output_section->vma
789 1.1 christos - elf_gp (htab->splt->output_section->owner));
790 1.1 christos
791 1.1 christos insn = ADDIL_DP;
792 1.1 christos #if R19_STUBS
793 1.1 christos if (hsh->stub_type == hppa_stub_import_shared)
794 1.1 christos insn = ADDIL_R19;
795 1.1 christos #endif
796 1.1 christos val = hppa_field_adjust (sym_value, 0, e_lrsel),
797 1.1 christos insn = hppa_rebuild_insn ((int) insn, val, 21);
798 1.1 christos bfd_put_32 (stub_bfd, insn, loc);
799 1.1 christos
800 1.1 christos /* It is critical to use lrsel/rrsel here because we are using
801 1.1 christos two different offsets (+0 and +4) from sym_value. If we use
802 1.1 christos lsel/rsel then with unfortunate sym_values we will round
803 1.1 christos sym_value+4 up to the next 2k block leading to a mis-match
804 1.1 christos between the lsel and rsel value. */
805 1.1 christos val = hppa_field_adjust (sym_value, 0, e_rrsel);
806 1.1 christos insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
807 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 4);
808 1.1 christos
809 1.1 christos if (htab->multi_subspace)
810 1.1 christos {
811 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
812 1.1 christos insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
813 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 8);
814 1.1 christos
815 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
816 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
817 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
818 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
819 1.1 christos
820 1.1 christos size = 28;
821 1.1 christos }
822 1.1 christos else
823 1.1 christos {
824 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
825 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
826 1.1 christos insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
827 1.1 christos bfd_put_32 (stub_bfd, insn, loc + 12);
828 1.1 christos
829 1.1 christos size = 16;
830 1.1 christos }
831 1.1 christos
832 1.1 christos break;
833 1.1 christos
834 1.1 christos case hppa_stub_export:
835 1.1 christos /* Branches are relative. This is where we are going to. */
836 1.1 christos sym_value = (hsh->target_value
837 1.1 christos + hsh->target_section->output_offset
838 1.1 christos + hsh->target_section->output_section->vma);
839 1.1 christos
840 1.1 christos /* And this is where we are coming from. */
841 1.1 christos sym_value -= (hsh->stub_offset
842 1.1 christos + stub_sec->output_offset
843 1.1 christos + stub_sec->output_section->vma);
844 1.1 christos
845 1.1 christos if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
846 1.1 christos && (!htab->has_22bit_branch
847 1.1 christos || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
848 1.1 christos {
849 1.1 christos (*_bfd_error_handler)
850 1.1 christos (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
851 1.1 christos hsh->target_section->owner,
852 1.1 christos stub_sec,
853 1.1 christos (long) hsh->stub_offset,
854 1.1 christos hsh->bh_root.string);
855 1.1 christos bfd_set_error (bfd_error_bad_value);
856 1.1 christos return FALSE;
857 1.1 christos }
858 1.1 christos
859 1.1 christos val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
860 1.1 christos if (!htab->has_22bit_branch)
861 1.1 christos insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
862 1.1 christos else
863 1.1 christos insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
864 1.1 christos bfd_put_32 (stub_bfd, insn, loc);
865 1.1 christos
866 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
867 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
868 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
869 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
870 1.1 christos bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
871 1.1 christos
872 1.1 christos /* Point the function symbol at the stub. */
873 1.1 christos hsh->hh->eh.root.u.def.section = stub_sec;
874 1.1 christos hsh->hh->eh.root.u.def.value = stub_sec->size;
875 1.1 christos
876 1.1 christos size = 24;
877 1.1 christos break;
878 1.1 christos
879 1.1 christos default:
880 1.1 christos BFD_FAIL ();
881 1.1 christos return FALSE;
882 1.1 christos }
883 1.1 christos
884 1.1 christos stub_sec->size += size;
885 1.1 christos return TRUE;
886 1.1 christos }
887 1.1 christos
888 1.1 christos #undef LDIL_R1
889 1.1 christos #undef BE_SR4_R1
890 1.1 christos #undef BL_R1
891 1.1 christos #undef ADDIL_R1
892 1.1 christos #undef DEPI_R1
893 1.1 christos #undef LDW_R1_R21
894 1.1 christos #undef LDW_R1_DLT
895 1.1 christos #undef LDW_R1_R19
896 1.1 christos #undef ADDIL_R19
897 1.1 christos #undef LDW_R1_DP
898 1.1 christos #undef LDSID_R21_R1
899 1.1 christos #undef MTSP_R1
900 1.1 christos #undef BE_SR0_R21
901 1.1 christos #undef STW_RP
902 1.1 christos #undef BV_R0_R21
903 1.1 christos #undef BL_RP
904 1.1 christos #undef NOP
905 1.1 christos #undef LDW_RP
906 1.1 christos #undef LDSID_RP_R1
907 1.1 christos #undef BE_SR0_RP
908 1.1 christos
909 1.1 christos /* As above, but don't actually build the stub. Just bump offset so
910 1.1 christos we know stub section sizes. */
911 1.1 christos
912 1.1 christos static bfd_boolean
913 1.1 christos hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
914 1.1 christos {
915 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
916 1.1 christos struct elf32_hppa_link_hash_table *htab;
917 1.1 christos int size;
918 1.1 christos
919 1.1 christos /* Massage our args to the form they really have. */
920 1.1 christos hsh = hppa_stub_hash_entry (bh);
921 1.1 christos htab = in_arg;
922 1.1 christos
923 1.1 christos if (hsh->stub_type == hppa_stub_long_branch)
924 1.1 christos size = 8;
925 1.1 christos else if (hsh->stub_type == hppa_stub_long_branch_shared)
926 1.1 christos size = 12;
927 1.1 christos else if (hsh->stub_type == hppa_stub_export)
928 1.1 christos size = 24;
929 1.1 christos else /* hppa_stub_import or hppa_stub_import_shared. */
930 1.1 christos {
931 1.1 christos if (htab->multi_subspace)
932 1.1 christos size = 28;
933 1.1 christos else
934 1.1 christos size = 16;
935 1.1 christos }
936 1.1 christos
937 1.1 christos hsh->stub_sec->size += size;
938 1.1 christos return TRUE;
939 1.1 christos }
940 1.1 christos
941 1.1 christos /* Return nonzero if ABFD represents an HPPA ELF32 file.
942 1.1 christos Additionally we set the default architecture and machine. */
943 1.1 christos
944 1.1 christos static bfd_boolean
945 1.1 christos elf32_hppa_object_p (bfd *abfd)
946 1.1 christos {
947 1.1 christos Elf_Internal_Ehdr * i_ehdrp;
948 1.1 christos unsigned int flags;
949 1.1 christos
950 1.1 christos i_ehdrp = elf_elfheader (abfd);
951 1.1 christos if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
952 1.1 christos {
953 1.1 christos /* GCC on hppa-linux produces binaries with OSABI=Linux,
954 1.1 christos but the kernel produces corefiles with OSABI=SysV. */
955 1.1 christos if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX &&
956 1.1 christos i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
957 1.1 christos return FALSE;
958 1.1 christos }
959 1.1 christos else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
960 1.1 christos {
961 1.1 christos /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
962 1.1 christos but the kernel produces corefiles with OSABI=SysV. */
963 1.1 christos if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
964 1.1 christos i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
965 1.1 christos return FALSE;
966 1.1 christos }
967 1.1 christos else
968 1.1 christos {
969 1.1 christos if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
970 1.1 christos return FALSE;
971 1.1 christos }
972 1.1 christos
973 1.1 christos flags = i_ehdrp->e_flags;
974 1.1 christos switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
975 1.1 christos {
976 1.1 christos case EFA_PARISC_1_0:
977 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
978 1.1 christos case EFA_PARISC_1_1:
979 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
980 1.1 christos case EFA_PARISC_2_0:
981 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
982 1.1 christos case EFA_PARISC_2_0 | EF_PARISC_WIDE:
983 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
984 1.1 christos }
985 1.1 christos return TRUE;
986 1.1 christos }
987 1.1 christos
988 1.1 christos /* Create the .plt and .got sections, and set up our hash table
989 1.1 christos short-cuts to various dynamic sections. */
990 1.1 christos
991 1.1 christos static bfd_boolean
992 1.1 christos elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
993 1.1 christos {
994 1.1 christos struct elf32_hppa_link_hash_table *htab;
995 1.1 christos struct elf_link_hash_entry *eh;
996 1.1 christos
997 1.1 christos /* Don't try to create the .plt and .got twice. */
998 1.1 christos htab = hppa_link_hash_table (info);
999 1.1 christos if (htab == NULL)
1000 1.1 christos return FALSE;
1001 1.1 christos if (htab->splt != NULL)
1002 1.1 christos return TRUE;
1003 1.1 christos
1004 1.1 christos /* Call the generic code to do most of the work. */
1005 1.1 christos if (! _bfd_elf_create_dynamic_sections (abfd, info))
1006 1.1 christos return FALSE;
1007 1.1 christos
1008 1.1 christos htab->splt = bfd_get_section_by_name (abfd, ".plt");
1009 1.1 christos htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
1010 1.1 christos
1011 1.1 christos htab->sgot = bfd_get_section_by_name (abfd, ".got");
1012 1.1 christos htab->srelgot = bfd_get_section_by_name (abfd, ".rela.got");
1013 1.1 christos
1014 1.1 christos htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
1015 1.1 christos htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
1016 1.1 christos
1017 1.1 christos /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
1018 1.1 christos application, because __canonicalize_funcptr_for_compare needs it. */
1019 1.1 christos eh = elf_hash_table (info)->hgot;
1020 1.1 christos eh->forced_local = 0;
1021 1.1 christos eh->other = STV_DEFAULT;
1022 1.1 christos return bfd_elf_link_record_dynamic_symbol (info, eh);
1023 1.1 christos }
1024 1.1 christos
1025 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
1026 1.1 christos
1027 1.1 christos static void
1028 1.1 christos elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
1029 1.1 christos struct elf_link_hash_entry *eh_dir,
1030 1.1 christos struct elf_link_hash_entry *eh_ind)
1031 1.1 christos {
1032 1.1 christos struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
1033 1.1 christos
1034 1.1 christos hh_dir = hppa_elf_hash_entry (eh_dir);
1035 1.1 christos hh_ind = hppa_elf_hash_entry (eh_ind);
1036 1.1 christos
1037 1.1 christos if (hh_ind->dyn_relocs != NULL)
1038 1.1 christos {
1039 1.1 christos if (hh_dir->dyn_relocs != NULL)
1040 1.1 christos {
1041 1.1 christos struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1042 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
1043 1.1 christos
1044 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
1045 1.1 christos list. Merge any entries against the same section. */
1046 1.1 christos for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1047 1.1 christos {
1048 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_q;
1049 1.1 christos
1050 1.1 christos for (hdh_q = hh_dir->dyn_relocs;
1051 1.1 christos hdh_q != NULL;
1052 1.1 christos hdh_q = hdh_q->hdh_next)
1053 1.1 christos if (hdh_q->sec == hdh_p->sec)
1054 1.1 christos {
1055 1.1 christos #if RELATIVE_DYNRELOCS
1056 1.1 christos hdh_q->relative_count += hdh_p->relative_count;
1057 1.1 christos #endif
1058 1.1 christos hdh_q->count += hdh_p->count;
1059 1.1 christos *hdh_pp = hdh_p->hdh_next;
1060 1.1 christos break;
1061 1.1 christos }
1062 1.1 christos if (hdh_q == NULL)
1063 1.1 christos hdh_pp = &hdh_p->hdh_next;
1064 1.1 christos }
1065 1.1 christos *hdh_pp = hh_dir->dyn_relocs;
1066 1.1 christos }
1067 1.1 christos
1068 1.1 christos hh_dir->dyn_relocs = hh_ind->dyn_relocs;
1069 1.1 christos hh_ind->dyn_relocs = NULL;
1070 1.1 christos }
1071 1.1 christos
1072 1.1 christos if (ELIMINATE_COPY_RELOCS
1073 1.1 christos && eh_ind->root.type != bfd_link_hash_indirect
1074 1.1 christos && eh_dir->dynamic_adjusted)
1075 1.1 christos {
1076 1.1 christos /* If called to transfer flags for a weakdef during processing
1077 1.1 christos of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1078 1.1 christos We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1079 1.1 christos eh_dir->ref_dynamic |= eh_ind->ref_dynamic;
1080 1.1 christos eh_dir->ref_regular |= eh_ind->ref_regular;
1081 1.1 christos eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak;
1082 1.1 christos eh_dir->needs_plt |= eh_ind->needs_plt;
1083 1.1 christos }
1084 1.1 christos else
1085 1.1 christos {
1086 1.1 christos if (eh_ind->root.type == bfd_link_hash_indirect
1087 1.1 christos && eh_dir->got.refcount <= 0)
1088 1.1 christos {
1089 1.1 christos hh_dir->tls_type = hh_ind->tls_type;
1090 1.1 christos hh_ind->tls_type = GOT_UNKNOWN;
1091 1.1 christos }
1092 1.1 christos
1093 1.1 christos _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
1094 1.1 christos }
1095 1.1 christos }
1096 1.1 christos
1097 1.1 christos static int
1098 1.1 christos elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
1099 1.1 christos int r_type, int is_local ATTRIBUTE_UNUSED)
1100 1.1 christos {
1101 1.1 christos /* For now we don't support linker optimizations. */
1102 1.1 christos return r_type;
1103 1.1 christos }
1104 1.1 christos
1105 1.1 christos /* Return a pointer to the local GOT, PLT and TLS reference counts
1106 1.1 christos for ABFD. Returns NULL if the storage allocation fails. */
1107 1.1 christos
1108 1.1 christos static bfd_signed_vma *
1109 1.1 christos hppa32_elf_local_refcounts (bfd *abfd)
1110 1.1 christos {
1111 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1112 1.1 christos bfd_signed_vma *local_refcounts;
1113 1.1 christos
1114 1.1 christos local_refcounts = elf_local_got_refcounts (abfd);
1115 1.1 christos if (local_refcounts == NULL)
1116 1.1 christos {
1117 1.1 christos bfd_size_type size;
1118 1.1 christos
1119 1.1 christos /* Allocate space for local GOT and PLT reference
1120 1.1 christos counts. Done this way to save polluting elf_obj_tdata
1121 1.1 christos with another target specific pointer. */
1122 1.1 christos size = symtab_hdr->sh_info;
1123 1.1 christos size *= 2 * sizeof (bfd_signed_vma);
1124 1.1 christos /* Add in space to store the local GOT TLS types. */
1125 1.1 christos size += symtab_hdr->sh_info;
1126 1.1 christos local_refcounts = bfd_zalloc (abfd, size);
1127 1.1 christos if (local_refcounts == NULL)
1128 1.1 christos return NULL;
1129 1.1 christos elf_local_got_refcounts (abfd) = local_refcounts;
1130 1.1 christos memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
1131 1.1 christos symtab_hdr->sh_info);
1132 1.1 christos }
1133 1.1 christos return local_refcounts;
1134 1.1 christos }
1135 1.1 christos
1136 1.1 christos
1137 1.1 christos /* Look through the relocs for a section during the first phase, and
1138 1.1 christos calculate needed space in the global offset table, procedure linkage
1139 1.1 christos table, and dynamic reloc sections. At this point we haven't
1140 1.1 christos necessarily read all the input files. */
1141 1.1 christos
1142 1.1 christos static bfd_boolean
1143 1.1 christos elf32_hppa_check_relocs (bfd *abfd,
1144 1.1 christos struct bfd_link_info *info,
1145 1.1 christos asection *sec,
1146 1.1 christos const Elf_Internal_Rela *relocs)
1147 1.1 christos {
1148 1.1 christos Elf_Internal_Shdr *symtab_hdr;
1149 1.1 christos struct elf_link_hash_entry **eh_syms;
1150 1.1 christos const Elf_Internal_Rela *rela;
1151 1.1 christos const Elf_Internal_Rela *rela_end;
1152 1.1 christos struct elf32_hppa_link_hash_table *htab;
1153 1.1 christos asection *sreloc;
1154 1.1 christos int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
1155 1.1 christos
1156 1.1 christos if (info->relocatable)
1157 1.1 christos return TRUE;
1158 1.1 christos
1159 1.1 christos htab = hppa_link_hash_table (info);
1160 1.1 christos if (htab == NULL)
1161 1.1 christos return FALSE;
1162 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1163 1.1 christos eh_syms = elf_sym_hashes (abfd);
1164 1.1 christos sreloc = NULL;
1165 1.1 christos
1166 1.1 christos rela_end = relocs + sec->reloc_count;
1167 1.1 christos for (rela = relocs; rela < rela_end; rela++)
1168 1.1 christos {
1169 1.1 christos enum {
1170 1.1 christos NEED_GOT = 1,
1171 1.1 christos NEED_PLT = 2,
1172 1.1 christos NEED_DYNREL = 4,
1173 1.1 christos PLT_PLABEL = 8
1174 1.1 christos };
1175 1.1 christos
1176 1.1 christos unsigned int r_symndx, r_type;
1177 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1178 1.1 christos int need_entry = 0;
1179 1.1 christos
1180 1.1 christos r_symndx = ELF32_R_SYM (rela->r_info);
1181 1.1 christos
1182 1.1 christos if (r_symndx < symtab_hdr->sh_info)
1183 1.1 christos hh = NULL;
1184 1.1 christos else
1185 1.1 christos {
1186 1.1 christos hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
1187 1.1 christos while (hh->eh.root.type == bfd_link_hash_indirect
1188 1.1 christos || hh->eh.root.type == bfd_link_hash_warning)
1189 1.1 christos hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
1190 1.1 christos }
1191 1.1 christos
1192 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
1193 1.1 christos r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
1194 1.1 christos
1195 1.1 christos switch (r_type)
1196 1.1 christos {
1197 1.1 christos case R_PARISC_DLTIND14F:
1198 1.1 christos case R_PARISC_DLTIND14R:
1199 1.1 christos case R_PARISC_DLTIND21L:
1200 1.1 christos /* This symbol requires a global offset table entry. */
1201 1.1 christos need_entry = NEED_GOT;
1202 1.1 christos break;
1203 1.1 christos
1204 1.1 christos case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1205 1.1 christos case R_PARISC_PLABEL21L:
1206 1.1 christos case R_PARISC_PLABEL32:
1207 1.1 christos /* If the addend is non-zero, we break badly. */
1208 1.1 christos if (rela->r_addend != 0)
1209 1.1 christos abort ();
1210 1.1 christos
1211 1.1 christos /* If we are creating a shared library, then we need to
1212 1.1 christos create a PLT entry for all PLABELs, because PLABELs with
1213 1.1 christos local symbols may be passed via a pointer to another
1214 1.1 christos object. Additionally, output a dynamic relocation
1215 1.1 christos pointing to the PLT entry.
1216 1.1 christos
1217 1.1 christos For executables, the original 32-bit ABI allowed two
1218 1.1 christos different styles of PLABELs (function pointers): For
1219 1.1 christos global functions, the PLABEL word points into the .plt
1220 1.1 christos two bytes past a (function address, gp) pair, and for
1221 1.1 christos local functions the PLABEL points directly at the
1222 1.1 christos function. The magic +2 for the first type allows us to
1223 1.1 christos differentiate between the two. As you can imagine, this
1224 1.1 christos is a real pain when it comes to generating code to call
1225 1.1 christos functions indirectly or to compare function pointers.
1226 1.1 christos We avoid the mess by always pointing a PLABEL into the
1227 1.1 christos .plt, even for local functions. */
1228 1.1 christos need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
1229 1.1 christos break;
1230 1.1 christos
1231 1.1 christos case R_PARISC_PCREL12F:
1232 1.1 christos htab->has_12bit_branch = 1;
1233 1.1 christos goto branch_common;
1234 1.1 christos
1235 1.1 christos case R_PARISC_PCREL17C:
1236 1.1 christos case R_PARISC_PCREL17F:
1237 1.1 christos htab->has_17bit_branch = 1;
1238 1.1 christos goto branch_common;
1239 1.1 christos
1240 1.1 christos case R_PARISC_PCREL22F:
1241 1.1 christos htab->has_22bit_branch = 1;
1242 1.1 christos branch_common:
1243 1.1 christos /* Function calls might need to go through the .plt, and
1244 1.1 christos might require long branch stubs. */
1245 1.1 christos if (hh == NULL)
1246 1.1 christos {
1247 1.1 christos /* We know local syms won't need a .plt entry, and if
1248 1.1 christos they need a long branch stub we can't guarantee that
1249 1.1 christos we can reach the stub. So just flag an error later
1250 1.1 christos if we're doing a shared link and find we need a long
1251 1.1 christos branch stub. */
1252 1.1 christos continue;
1253 1.1 christos }
1254 1.1 christos else
1255 1.1 christos {
1256 1.1 christos /* Global symbols will need a .plt entry if they remain
1257 1.1 christos global, and in most cases won't need a long branch
1258 1.1 christos stub. Unfortunately, we have to cater for the case
1259 1.1 christos where a symbol is forced local by versioning, or due
1260 1.1 christos to symbolic linking, and we lose the .plt entry. */
1261 1.1 christos need_entry = NEED_PLT;
1262 1.1 christos if (hh->eh.type == STT_PARISC_MILLI)
1263 1.1 christos need_entry = 0;
1264 1.1 christos }
1265 1.1 christos break;
1266 1.1 christos
1267 1.1 christos case R_PARISC_SEGBASE: /* Used to set segment base. */
1268 1.1 christos case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1269 1.1 christos case R_PARISC_PCREL14F: /* PC relative load/store. */
1270 1.1 christos case R_PARISC_PCREL14R:
1271 1.1 christos case R_PARISC_PCREL17R: /* External branches. */
1272 1.1 christos case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1273 1.1 christos case R_PARISC_PCREL32:
1274 1.1 christos /* We don't need to propagate the relocation if linking a
1275 1.1 christos shared object since these are section relative. */
1276 1.1 christos continue;
1277 1.1 christos
1278 1.1 christos case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1279 1.1 christos case R_PARISC_DPREL14R:
1280 1.1 christos case R_PARISC_DPREL21L:
1281 1.1 christos if (info->shared)
1282 1.1 christos {
1283 1.1 christos (*_bfd_error_handler)
1284 1.1 christos (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1285 1.1 christos abfd,
1286 1.1 christos elf_hppa_howto_table[r_type].name);
1287 1.1 christos bfd_set_error (bfd_error_bad_value);
1288 1.1 christos return FALSE;
1289 1.1 christos }
1290 1.1 christos /* Fall through. */
1291 1.1 christos
1292 1.1 christos case R_PARISC_DIR17F: /* Used for external branches. */
1293 1.1 christos case R_PARISC_DIR17R:
1294 1.1 christos case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1295 1.1 christos case R_PARISC_DIR14R:
1296 1.1 christos case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1297 1.1 christos case R_PARISC_DIR32: /* .word relocs. */
1298 1.1 christos /* We may want to output a dynamic relocation later. */
1299 1.1 christos need_entry = NEED_DYNREL;
1300 1.1 christos break;
1301 1.1 christos
1302 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
1303 1.1 christos Reconstruct it for later use during GC. */
1304 1.1 christos case R_PARISC_GNU_VTINHERIT:
1305 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
1306 1.1 christos return FALSE;
1307 1.1 christos continue;
1308 1.1 christos
1309 1.1 christos /* This relocation describes which C++ vtable entries are actually
1310 1.1 christos used. Record for later use during GC. */
1311 1.1 christos case R_PARISC_GNU_VTENTRY:
1312 1.1 christos BFD_ASSERT (hh != NULL);
1313 1.1 christos if (hh != NULL
1314 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
1315 1.1 christos return FALSE;
1316 1.1 christos continue;
1317 1.1 christos
1318 1.1 christos case R_PARISC_TLS_GD21L:
1319 1.1 christos case R_PARISC_TLS_GD14R:
1320 1.1 christos case R_PARISC_TLS_LDM21L:
1321 1.1 christos case R_PARISC_TLS_LDM14R:
1322 1.1 christos need_entry = NEED_GOT;
1323 1.1 christos break;
1324 1.1 christos
1325 1.1 christos case R_PARISC_TLS_IE21L:
1326 1.1 christos case R_PARISC_TLS_IE14R:
1327 1.1 christos if (info->shared)
1328 1.1 christos info->flags |= DF_STATIC_TLS;
1329 1.1 christos need_entry = NEED_GOT;
1330 1.1 christos break;
1331 1.1 christos
1332 1.1 christos default:
1333 1.1 christos continue;
1334 1.1 christos }
1335 1.1 christos
1336 1.1 christos /* Now carry out our orders. */
1337 1.1 christos if (need_entry & NEED_GOT)
1338 1.1 christos {
1339 1.1 christos switch (r_type)
1340 1.1 christos {
1341 1.1 christos default:
1342 1.1 christos tls_type = GOT_NORMAL;
1343 1.1 christos break;
1344 1.1 christos case R_PARISC_TLS_GD21L:
1345 1.1 christos case R_PARISC_TLS_GD14R:
1346 1.1 christos tls_type |= GOT_TLS_GD;
1347 1.1 christos break;
1348 1.1 christos case R_PARISC_TLS_LDM21L:
1349 1.1 christos case R_PARISC_TLS_LDM14R:
1350 1.1 christos tls_type |= GOT_TLS_LDM;
1351 1.1 christos break;
1352 1.1 christos case R_PARISC_TLS_IE21L:
1353 1.1 christos case R_PARISC_TLS_IE14R:
1354 1.1 christos tls_type |= GOT_TLS_IE;
1355 1.1 christos break;
1356 1.1 christos }
1357 1.1 christos
1358 1.1 christos /* Allocate space for a GOT entry, as well as a dynamic
1359 1.1 christos relocation for this entry. */
1360 1.1 christos if (htab->sgot == NULL)
1361 1.1 christos {
1362 1.1 christos if (htab->etab.dynobj == NULL)
1363 1.1 christos htab->etab.dynobj = abfd;
1364 1.1 christos if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
1365 1.1 christos return FALSE;
1366 1.1 christos }
1367 1.1 christos
1368 1.1 christos if (r_type == R_PARISC_TLS_LDM21L
1369 1.1 christos || r_type == R_PARISC_TLS_LDM14R)
1370 1.1 christos htab->tls_ldm_got.refcount += 1;
1371 1.1 christos else
1372 1.1 christos {
1373 1.1 christos if (hh != NULL)
1374 1.1 christos {
1375 1.1 christos hh->eh.got.refcount += 1;
1376 1.1 christos old_tls_type = hh->tls_type;
1377 1.1 christos }
1378 1.1 christos else
1379 1.1 christos {
1380 1.1 christos bfd_signed_vma *local_got_refcounts;
1381 1.1 christos
1382 1.1 christos /* This is a global offset table entry for a local symbol. */
1383 1.1 christos local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1384 1.1 christos if (local_got_refcounts == NULL)
1385 1.1 christos return FALSE;
1386 1.1 christos local_got_refcounts[r_symndx] += 1;
1387 1.1 christos
1388 1.1 christos old_tls_type = hppa_elf_local_got_tls_type (abfd) [r_symndx];
1389 1.1 christos }
1390 1.1 christos
1391 1.1 christos tls_type |= old_tls_type;
1392 1.1 christos
1393 1.1 christos if (old_tls_type != tls_type)
1394 1.1 christos {
1395 1.1 christos if (hh != NULL)
1396 1.1 christos hh->tls_type = tls_type;
1397 1.1 christos else
1398 1.1 christos hppa_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1399 1.1 christos }
1400 1.1 christos
1401 1.1 christos }
1402 1.1 christos }
1403 1.1 christos
1404 1.1 christos if (need_entry & NEED_PLT)
1405 1.1 christos {
1406 1.1 christos /* If we are creating a shared library, and this is a reloc
1407 1.1 christos against a weak symbol or a global symbol in a dynamic
1408 1.1 christos object, then we will be creating an import stub and a
1409 1.1 christos .plt entry for the symbol. Similarly, on a normal link
1410 1.1 christos to symbols defined in a dynamic object we'll need the
1411 1.1 christos import stub and a .plt entry. We don't know yet whether
1412 1.1 christos the symbol is defined or not, so make an entry anyway and
1413 1.1 christos clean up later in adjust_dynamic_symbol. */
1414 1.1 christos if ((sec->flags & SEC_ALLOC) != 0)
1415 1.1 christos {
1416 1.1 christos if (hh != NULL)
1417 1.1 christos {
1418 1.1 christos hh->eh.needs_plt = 1;
1419 1.1 christos hh->eh.plt.refcount += 1;
1420 1.1 christos
1421 1.1 christos /* If this .plt entry is for a plabel, mark it so
1422 1.1 christos that adjust_dynamic_symbol will keep the entry
1423 1.1 christos even if it appears to be local. */
1424 1.1 christos if (need_entry & PLT_PLABEL)
1425 1.1 christos hh->plabel = 1;
1426 1.1 christos }
1427 1.1 christos else if (need_entry & PLT_PLABEL)
1428 1.1 christos {
1429 1.1 christos bfd_signed_vma *local_got_refcounts;
1430 1.1 christos bfd_signed_vma *local_plt_refcounts;
1431 1.1 christos
1432 1.1 christos local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1433 1.1 christos if (local_got_refcounts == NULL)
1434 1.1 christos return FALSE;
1435 1.1 christos local_plt_refcounts = (local_got_refcounts
1436 1.1 christos + symtab_hdr->sh_info);
1437 1.1 christos local_plt_refcounts[r_symndx] += 1;
1438 1.1 christos }
1439 1.1 christos }
1440 1.1 christos }
1441 1.1 christos
1442 1.1 christos if (need_entry & NEED_DYNREL)
1443 1.1 christos {
1444 1.1 christos /* Flag this symbol as having a non-got, non-plt reference
1445 1.1 christos so that we generate copy relocs if it turns out to be
1446 1.1 christos dynamic. */
1447 1.1 christos if (hh != NULL && !info->shared)
1448 1.1 christos hh->eh.non_got_ref = 1;
1449 1.1 christos
1450 1.1 christos /* If we are creating a shared library then we need to copy
1451 1.1 christos the reloc into the shared library. However, if we are
1452 1.1 christos linking with -Bsymbolic, we need only copy absolute
1453 1.1 christos relocs or relocs against symbols that are not defined in
1454 1.1 christos an object we are including in the link. PC- or DP- or
1455 1.1 christos DLT-relative relocs against any local sym or global sym
1456 1.1 christos with DEF_REGULAR set, can be discarded. At this point we
1457 1.1 christos have not seen all the input files, so it is possible that
1458 1.1 christos DEF_REGULAR is not set now but will be set later (it is
1459 1.1 christos never cleared). We account for that possibility below by
1460 1.1 christos storing information in the dyn_relocs field of the
1461 1.1 christos hash table entry.
1462 1.1 christos
1463 1.1 christos A similar situation to the -Bsymbolic case occurs when
1464 1.1 christos creating shared libraries and symbol visibility changes
1465 1.1 christos render the symbol local.
1466 1.1 christos
1467 1.1 christos As it turns out, all the relocs we will be creating here
1468 1.1 christos are absolute, so we cannot remove them on -Bsymbolic
1469 1.1 christos links or visibility changes anyway. A STUB_REL reloc
1470 1.1 christos is absolute too, as in that case it is the reloc in the
1471 1.1 christos stub we will be creating, rather than copying the PCREL
1472 1.1 christos reloc in the branch.
1473 1.1 christos
1474 1.1 christos If on the other hand, we are creating an executable, we
1475 1.1 christos may need to keep relocations for symbols satisfied by a
1476 1.1 christos dynamic library if we manage to avoid copy relocs for the
1477 1.1 christos symbol. */
1478 1.1 christos if ((info->shared
1479 1.1 christos && (sec->flags & SEC_ALLOC) != 0
1480 1.1 christos && (IS_ABSOLUTE_RELOC (r_type)
1481 1.1 christos || (hh != NULL
1482 1.1 christos && (!info->symbolic
1483 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak
1484 1.1 christos || !hh->eh.def_regular))))
1485 1.1 christos || (ELIMINATE_COPY_RELOCS
1486 1.1 christos && !info->shared
1487 1.1 christos && (sec->flags & SEC_ALLOC) != 0
1488 1.1 christos && hh != NULL
1489 1.1 christos && (hh->eh.root.type == bfd_link_hash_defweak
1490 1.1 christos || !hh->eh.def_regular)))
1491 1.1 christos {
1492 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
1493 1.1 christos struct elf32_hppa_dyn_reloc_entry **hdh_head;
1494 1.1 christos
1495 1.1 christos /* Create a reloc section in dynobj and make room for
1496 1.1 christos this reloc. */
1497 1.1 christos if (sreloc == NULL)
1498 1.1 christos {
1499 1.1 christos if (htab->etab.dynobj == NULL)
1500 1.1 christos htab->etab.dynobj = abfd;
1501 1.1 christos
1502 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
1503 1.1 christos (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
1504 1.1 christos
1505 1.1 christos if (sreloc == NULL)
1506 1.1 christos {
1507 1.1 christos bfd_set_error (bfd_error_bad_value);
1508 1.1 christos return FALSE;
1509 1.1 christos }
1510 1.1 christos }
1511 1.1 christos
1512 1.1 christos /* If this is a global symbol, we count the number of
1513 1.1 christos relocations we need for this symbol. */
1514 1.1 christos if (hh != NULL)
1515 1.1 christos {
1516 1.1 christos hdh_head = &hh->dyn_relocs;
1517 1.1 christos }
1518 1.1 christos else
1519 1.1 christos {
1520 1.1 christos /* Track dynamic relocs needed for local syms too.
1521 1.1 christos We really need local syms available to do this
1522 1.1 christos easily. Oh well. */
1523 1.1 christos asection *sr;
1524 1.1 christos void *vpp;
1525 1.1 christos Elf_Internal_Sym *isym;
1526 1.1 christos
1527 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1528 1.1 christos abfd, r_symndx);
1529 1.1 christos if (isym == NULL)
1530 1.1 christos return FALSE;
1531 1.1 christos
1532 1.1 christos sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
1533 1.1 christos if (sr == NULL)
1534 1.1 christos sr = sec;
1535 1.1 christos
1536 1.1 christos vpp = &elf_section_data (sr)->local_dynrel;
1537 1.1 christos hdh_head = (struct elf32_hppa_dyn_reloc_entry **) vpp;
1538 1.1 christos }
1539 1.1 christos
1540 1.1 christos hdh_p = *hdh_head;
1541 1.1 christos if (hdh_p == NULL || hdh_p->sec != sec)
1542 1.1 christos {
1543 1.1 christos hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
1544 1.1 christos if (hdh_p == NULL)
1545 1.1 christos return FALSE;
1546 1.1 christos hdh_p->hdh_next = *hdh_head;
1547 1.1 christos *hdh_head = hdh_p;
1548 1.1 christos hdh_p->sec = sec;
1549 1.1 christos hdh_p->count = 0;
1550 1.1 christos #if RELATIVE_DYNRELOCS
1551 1.1 christos hdh_p->relative_count = 0;
1552 1.1 christos #endif
1553 1.1 christos }
1554 1.1 christos
1555 1.1 christos hdh_p->count += 1;
1556 1.1 christos #if RELATIVE_DYNRELOCS
1557 1.1 christos if (!IS_ABSOLUTE_RELOC (rtype))
1558 1.1 christos hdh_p->relative_count += 1;
1559 1.1 christos #endif
1560 1.1 christos }
1561 1.1 christos }
1562 1.1 christos }
1563 1.1 christos
1564 1.1 christos return TRUE;
1565 1.1 christos }
1566 1.1 christos
1567 1.1 christos /* Return the section that should be marked against garbage collection
1568 1.1 christos for a given relocation. */
1569 1.1 christos
1570 1.1 christos static asection *
1571 1.1 christos elf32_hppa_gc_mark_hook (asection *sec,
1572 1.1 christos struct bfd_link_info *info,
1573 1.1 christos Elf_Internal_Rela *rela,
1574 1.1 christos struct elf_link_hash_entry *hh,
1575 1.1 christos Elf_Internal_Sym *sym)
1576 1.1 christos {
1577 1.1 christos if (hh != NULL)
1578 1.1 christos switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
1579 1.1 christos {
1580 1.1 christos case R_PARISC_GNU_VTINHERIT:
1581 1.1 christos case R_PARISC_GNU_VTENTRY:
1582 1.1 christos return NULL;
1583 1.1 christos }
1584 1.1 christos
1585 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
1586 1.1 christos }
1587 1.1 christos
1588 1.1 christos /* Update the got and plt entry reference counts for the section being
1589 1.1 christos removed. */
1590 1.1 christos
1591 1.1 christos static bfd_boolean
1592 1.1 christos elf32_hppa_gc_sweep_hook (bfd *abfd,
1593 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED,
1594 1.1 christos asection *sec,
1595 1.1 christos const Elf_Internal_Rela *relocs)
1596 1.1 christos {
1597 1.1 christos Elf_Internal_Shdr *symtab_hdr;
1598 1.1 christos struct elf_link_hash_entry **eh_syms;
1599 1.1 christos bfd_signed_vma *local_got_refcounts;
1600 1.1 christos bfd_signed_vma *local_plt_refcounts;
1601 1.1 christos const Elf_Internal_Rela *rela, *relend;
1602 1.1 christos struct elf32_hppa_link_hash_table *htab;
1603 1.1 christos
1604 1.1 christos if (info->relocatable)
1605 1.1 christos return TRUE;
1606 1.1 christos
1607 1.1 christos htab = hppa_link_hash_table (info);
1608 1.1 christos if (htab == NULL)
1609 1.1 christos return FALSE;
1610 1.1 christos
1611 1.1 christos elf_section_data (sec)->local_dynrel = NULL;
1612 1.1 christos
1613 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1614 1.1 christos eh_syms = elf_sym_hashes (abfd);
1615 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
1616 1.1 christos local_plt_refcounts = local_got_refcounts;
1617 1.1 christos if (local_plt_refcounts != NULL)
1618 1.1 christos local_plt_refcounts += symtab_hdr->sh_info;
1619 1.1 christos
1620 1.1 christos relend = relocs + sec->reloc_count;
1621 1.1 christos for (rela = relocs; rela < relend; rela++)
1622 1.1 christos {
1623 1.1 christos unsigned long r_symndx;
1624 1.1 christos unsigned int r_type;
1625 1.1 christos struct elf_link_hash_entry *eh = NULL;
1626 1.1 christos
1627 1.1 christos r_symndx = ELF32_R_SYM (rela->r_info);
1628 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
1629 1.1 christos {
1630 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1631 1.1 christos struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1632 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
1633 1.1 christos
1634 1.1 christos eh = eh_syms[r_symndx - symtab_hdr->sh_info];
1635 1.1 christos while (eh->root.type == bfd_link_hash_indirect
1636 1.1 christos || eh->root.type == bfd_link_hash_warning)
1637 1.1 christos eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1638 1.1 christos hh = hppa_elf_hash_entry (eh);
1639 1.1 christos
1640 1.1 christos for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next)
1641 1.1 christos if (hdh_p->sec == sec)
1642 1.1 christos {
1643 1.1 christos /* Everything must go for SEC. */
1644 1.1 christos *hdh_pp = hdh_p->hdh_next;
1645 1.1 christos break;
1646 1.1 christos }
1647 1.1 christos }
1648 1.1 christos
1649 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
1650 1.1 christos r_type = elf32_hppa_optimized_tls_reloc (info, r_type, eh != NULL);
1651 1.1 christos
1652 1.1 christos switch (r_type)
1653 1.1 christos {
1654 1.1 christos case R_PARISC_DLTIND14F:
1655 1.1 christos case R_PARISC_DLTIND14R:
1656 1.1 christos case R_PARISC_DLTIND21L:
1657 1.1 christos case R_PARISC_TLS_GD21L:
1658 1.1 christos case R_PARISC_TLS_GD14R:
1659 1.1 christos case R_PARISC_TLS_IE21L:
1660 1.1 christos case R_PARISC_TLS_IE14R:
1661 1.1 christos if (eh != NULL)
1662 1.1 christos {
1663 1.1 christos if (eh->got.refcount > 0)
1664 1.1 christos eh->got.refcount -= 1;
1665 1.1 christos }
1666 1.1 christos else if (local_got_refcounts != NULL)
1667 1.1 christos {
1668 1.1 christos if (local_got_refcounts[r_symndx] > 0)
1669 1.1 christos local_got_refcounts[r_symndx] -= 1;
1670 1.1 christos }
1671 1.1 christos break;
1672 1.1 christos
1673 1.1 christos case R_PARISC_TLS_LDM21L:
1674 1.1 christos case R_PARISC_TLS_LDM14R:
1675 1.1 christos htab->tls_ldm_got.refcount -= 1;
1676 1.1 christos break;
1677 1.1 christos
1678 1.1 christos case R_PARISC_PCREL12F:
1679 1.1 christos case R_PARISC_PCREL17C:
1680 1.1 christos case R_PARISC_PCREL17F:
1681 1.1 christos case R_PARISC_PCREL22F:
1682 1.1 christos if (eh != NULL)
1683 1.1 christos {
1684 1.1 christos if (eh->plt.refcount > 0)
1685 1.1 christos eh->plt.refcount -= 1;
1686 1.1 christos }
1687 1.1 christos break;
1688 1.1 christos
1689 1.1 christos case R_PARISC_PLABEL14R:
1690 1.1 christos case R_PARISC_PLABEL21L:
1691 1.1 christos case R_PARISC_PLABEL32:
1692 1.1 christos if (eh != NULL)
1693 1.1 christos {
1694 1.1 christos if (eh->plt.refcount > 0)
1695 1.1 christos eh->plt.refcount -= 1;
1696 1.1 christos }
1697 1.1 christos else if (local_plt_refcounts != NULL)
1698 1.1 christos {
1699 1.1 christos if (local_plt_refcounts[r_symndx] > 0)
1700 1.1 christos local_plt_refcounts[r_symndx] -= 1;
1701 1.1 christos }
1702 1.1 christos break;
1703 1.1 christos
1704 1.1 christos default:
1705 1.1 christos break;
1706 1.1 christos }
1707 1.1 christos }
1708 1.1 christos
1709 1.1 christos return TRUE;
1710 1.1 christos }
1711 1.1 christos
1712 1.1 christos /* Support for core dump NOTE sections. */
1713 1.1 christos
1714 1.1 christos static bfd_boolean
1715 1.1 christos elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1716 1.1 christos {
1717 1.1 christos int offset;
1718 1.1 christos size_t size;
1719 1.1 christos
1720 1.1 christos switch (note->descsz)
1721 1.1 christos {
1722 1.1 christos default:
1723 1.1 christos return FALSE;
1724 1.1 christos
1725 1.1 christos case 396: /* Linux/hppa */
1726 1.1 christos /* pr_cursig */
1727 1.1 christos elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1728 1.1 christos
1729 1.1 christos /* pr_pid */
1730 1.1 christos elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
1731 1.1 christos
1732 1.1 christos /* pr_reg */
1733 1.1 christos offset = 72;
1734 1.1 christos size = 320;
1735 1.1 christos
1736 1.1 christos break;
1737 1.1 christos }
1738 1.1 christos
1739 1.1 christos /* Make a ".reg/999" section. */
1740 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1741 1.1 christos size, note->descpos + offset);
1742 1.1 christos }
1743 1.1 christos
1744 1.1 christos static bfd_boolean
1745 1.1 christos elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1746 1.1 christos {
1747 1.1 christos switch (note->descsz)
1748 1.1 christos {
1749 1.1 christos default:
1750 1.1 christos return FALSE;
1751 1.1 christos
1752 1.1 christos case 124: /* Linux/hppa elf_prpsinfo. */
1753 1.1 christos elf_tdata (abfd)->core_program
1754 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1755 1.1 christos elf_tdata (abfd)->core_command
1756 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1757 1.1 christos }
1758 1.1 christos
1759 1.1 christos /* Note that for some reason, a spurious space is tacked
1760 1.1 christos onto the end of the args in some (at least one anyway)
1761 1.1 christos implementations, so strip it off if it exists. */
1762 1.1 christos {
1763 1.1 christos char *command = elf_tdata (abfd)->core_command;
1764 1.1 christos int n = strlen (command);
1765 1.1 christos
1766 1.1 christos if (0 < n && command[n - 1] == ' ')
1767 1.1 christos command[n - 1] = '\0';
1768 1.1 christos }
1769 1.1 christos
1770 1.1 christos return TRUE;
1771 1.1 christos }
1772 1.1 christos
1773 1.1 christos /* Our own version of hide_symbol, so that we can keep plt entries for
1774 1.1 christos plabels. */
1775 1.1 christos
1776 1.1 christos static void
1777 1.1 christos elf32_hppa_hide_symbol (struct bfd_link_info *info,
1778 1.1 christos struct elf_link_hash_entry *eh,
1779 1.1 christos bfd_boolean force_local)
1780 1.1 christos {
1781 1.1 christos if (force_local)
1782 1.1 christos {
1783 1.1 christos eh->forced_local = 1;
1784 1.1 christos if (eh->dynindx != -1)
1785 1.1 christos {
1786 1.1 christos eh->dynindx = -1;
1787 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1788 1.1 christos eh->dynstr_index);
1789 1.1 christos }
1790 1.1 christos }
1791 1.1 christos
1792 1.1 christos if (! hppa_elf_hash_entry (eh)->plabel)
1793 1.1 christos {
1794 1.1 christos eh->needs_plt = 0;
1795 1.1 christos eh->plt = elf_hash_table (info)->init_plt_refcount;
1796 1.1 christos }
1797 1.1 christos }
1798 1.1 christos
1799 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
1800 1.1 christos regular object. The current definition is in some section of the
1801 1.1 christos dynamic object, but we're not including those sections. We have to
1802 1.1 christos change the definition to something the rest of the link can
1803 1.1 christos understand. */
1804 1.1 christos
1805 1.1 christos static bfd_boolean
1806 1.1 christos elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1807 1.1 christos struct elf_link_hash_entry *eh)
1808 1.1 christos {
1809 1.1 christos struct elf32_hppa_link_hash_table *htab;
1810 1.1 christos asection *sec;
1811 1.1 christos
1812 1.1 christos /* If this is a function, put it in the procedure linkage table. We
1813 1.1 christos will fill in the contents of the procedure linkage table later. */
1814 1.1 christos if (eh->type == STT_FUNC
1815 1.1 christos || eh->needs_plt)
1816 1.1 christos {
1817 1.1 christos if (eh->plt.refcount <= 0
1818 1.1 christos || (eh->def_regular
1819 1.1 christos && eh->root.type != bfd_link_hash_defweak
1820 1.1 christos && ! hppa_elf_hash_entry (eh)->plabel
1821 1.1 christos && (!info->shared || info->symbolic)))
1822 1.1 christos {
1823 1.1 christos /* The .plt entry is not needed when:
1824 1.1 christos a) Garbage collection has removed all references to the
1825 1.1 christos symbol, or
1826 1.1 christos b) We know for certain the symbol is defined in this
1827 1.1 christos object, and it's not a weak definition, nor is the symbol
1828 1.1 christos used by a plabel relocation. Either this object is the
1829 1.1 christos application or we are doing a shared symbolic link. */
1830 1.1 christos
1831 1.1 christos eh->plt.offset = (bfd_vma) -1;
1832 1.1 christos eh->needs_plt = 0;
1833 1.1 christos }
1834 1.1 christos
1835 1.1 christos return TRUE;
1836 1.1 christos }
1837 1.1 christos else
1838 1.1 christos eh->plt.offset = (bfd_vma) -1;
1839 1.1 christos
1840 1.1 christos /* If this is a weak symbol, and there is a real definition, the
1841 1.1 christos processor independent code will have arranged for us to see the
1842 1.1 christos real definition first, and we can just use the same value. */
1843 1.1 christos if (eh->u.weakdef != NULL)
1844 1.1 christos {
1845 1.1 christos if (eh->u.weakdef->root.type != bfd_link_hash_defined
1846 1.1 christos && eh->u.weakdef->root.type != bfd_link_hash_defweak)
1847 1.1 christos abort ();
1848 1.1 christos eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1849 1.1 christos eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
1850 1.1 christos if (ELIMINATE_COPY_RELOCS)
1851 1.1 christos eh->non_got_ref = eh->u.weakdef->non_got_ref;
1852 1.1 christos return TRUE;
1853 1.1 christos }
1854 1.1 christos
1855 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
1856 1.1 christos is not a function. */
1857 1.1 christos
1858 1.1 christos /* If we are creating a shared library, we must presume that the
1859 1.1 christos only references to the symbol are via the global offset table.
1860 1.1 christos For such cases we need not do anything here; the relocations will
1861 1.1 christos be handled correctly by relocate_section. */
1862 1.1 christos if (info->shared)
1863 1.1 christos return TRUE;
1864 1.1 christos
1865 1.1 christos /* If there are no references to this symbol that do not use the
1866 1.1 christos GOT, we don't need to generate a copy reloc. */
1867 1.1 christos if (!eh->non_got_ref)
1868 1.1 christos return TRUE;
1869 1.1 christos
1870 1.1 christos if (ELIMINATE_COPY_RELOCS)
1871 1.1 christos {
1872 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1873 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
1874 1.1 christos
1875 1.1 christos hh = hppa_elf_hash_entry (eh);
1876 1.1 christos for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1877 1.1 christos {
1878 1.1 christos sec = hdh_p->sec->output_section;
1879 1.1 christos if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1880 1.1 christos break;
1881 1.1 christos }
1882 1.1 christos
1883 1.1 christos /* If we didn't find any dynamic relocs in read-only sections, then
1884 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1885 1.1 christos if (hdh_p == NULL)
1886 1.1 christos {
1887 1.1 christos eh->non_got_ref = 0;
1888 1.1 christos return TRUE;
1889 1.1 christos }
1890 1.1 christos }
1891 1.1 christos
1892 1.1 christos if (eh->size == 0)
1893 1.1 christos {
1894 1.1 christos (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1895 1.1 christos eh->root.root.string);
1896 1.1 christos return TRUE;
1897 1.1 christos }
1898 1.1 christos
1899 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
1900 1.1 christos become part of the .bss section of the executable. There will be
1901 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
1902 1.1 christos object will contain position independent code, so all references
1903 1.1 christos from the dynamic object to this symbol will go through the global
1904 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
1905 1.1 christos determine the address it must put in the global offset table, so
1906 1.1 christos both the dynamic object and the regular object will refer to the
1907 1.1 christos same memory location for the variable. */
1908 1.1 christos
1909 1.1 christos htab = hppa_link_hash_table (info);
1910 1.1 christos if (htab == NULL)
1911 1.1 christos return FALSE;
1912 1.1 christos
1913 1.1 christos /* We must generate a COPY reloc to tell the dynamic linker to
1914 1.1 christos copy the initial value out of the dynamic object and into the
1915 1.1 christos runtime process image. */
1916 1.1 christos if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0)
1917 1.1 christos {
1918 1.1 christos htab->srelbss->size += sizeof (Elf32_External_Rela);
1919 1.1 christos eh->needs_copy = 1;
1920 1.1 christos }
1921 1.1 christos
1922 1.1 christos sec = htab->sdynbss;
1923 1.1 christos
1924 1.1 christos return _bfd_elf_adjust_dynamic_copy (eh, sec);
1925 1.1 christos }
1926 1.1 christos
1927 1.1 christos /* Allocate space in the .plt for entries that won't have relocations.
1928 1.1 christos ie. plabel entries. */
1929 1.1 christos
1930 1.1 christos static bfd_boolean
1931 1.1 christos allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1932 1.1 christos {
1933 1.1 christos struct bfd_link_info *info;
1934 1.1 christos struct elf32_hppa_link_hash_table *htab;
1935 1.1 christos struct elf32_hppa_link_hash_entry *hh;
1936 1.1 christos asection *sec;
1937 1.1 christos
1938 1.1 christos if (eh->root.type == bfd_link_hash_indirect)
1939 1.1 christos return TRUE;
1940 1.1 christos
1941 1.1 christos if (eh->root.type == bfd_link_hash_warning)
1942 1.1 christos eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1943 1.1 christos
1944 1.1 christos info = (struct bfd_link_info *) inf;
1945 1.1 christos hh = hppa_elf_hash_entry (eh);
1946 1.1 christos htab = hppa_link_hash_table (info);
1947 1.1 christos if (htab == NULL)
1948 1.1 christos return FALSE;
1949 1.1 christos
1950 1.1 christos if (htab->etab.dynamic_sections_created
1951 1.1 christos && eh->plt.refcount > 0)
1952 1.1 christos {
1953 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
1954 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
1955 1.1 christos if (eh->dynindx == -1
1956 1.1 christos && !eh->forced_local
1957 1.1 christos && eh->type != STT_PARISC_MILLI)
1958 1.1 christos {
1959 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, eh))
1960 1.1 christos return FALSE;
1961 1.1 christos }
1962 1.1 christos
1963 1.1 christos if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, eh))
1964 1.1 christos {
1965 1.1 christos /* Allocate these later. From this point on, h->plabel
1966 1.1 christos means that the plt entry is only used by a plabel.
1967 1.1 christos We'll be using a normal plt entry for this symbol, so
1968 1.1 christos clear the plabel indicator. */
1969 1.1 christos
1970 1.1 christos hh->plabel = 0;
1971 1.1 christos }
1972 1.1 christos else if (hh->plabel)
1973 1.1 christos {
1974 1.1 christos /* Make an entry in the .plt section for plabel references
1975 1.1 christos that won't have a .plt entry for other reasons. */
1976 1.1 christos sec = htab->splt;
1977 1.1 christos eh->plt.offset = sec->size;
1978 1.1 christos sec->size += PLT_ENTRY_SIZE;
1979 1.1 christos }
1980 1.1 christos else
1981 1.1 christos {
1982 1.1 christos /* No .plt entry needed. */
1983 1.1 christos eh->plt.offset = (bfd_vma) -1;
1984 1.1 christos eh->needs_plt = 0;
1985 1.1 christos }
1986 1.1 christos }
1987 1.1 christos else
1988 1.1 christos {
1989 1.1 christos eh->plt.offset = (bfd_vma) -1;
1990 1.1 christos eh->needs_plt = 0;
1991 1.1 christos }
1992 1.1 christos
1993 1.1 christos return TRUE;
1994 1.1 christos }
1995 1.1 christos
1996 1.1 christos /* Allocate space in .plt, .got and associated reloc sections for
1997 1.1 christos global syms. */
1998 1.1 christos
1999 1.1 christos static bfd_boolean
2000 1.1 christos allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2001 1.1 christos {
2002 1.1 christos struct bfd_link_info *info;
2003 1.1 christos struct elf32_hppa_link_hash_table *htab;
2004 1.1 christos asection *sec;
2005 1.1 christos struct elf32_hppa_link_hash_entry *hh;
2006 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
2007 1.1 christos
2008 1.1 christos if (eh->root.type == bfd_link_hash_indirect)
2009 1.1 christos return TRUE;
2010 1.1 christos
2011 1.1 christos if (eh->root.type == bfd_link_hash_warning)
2012 1.1 christos eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2013 1.1 christos
2014 1.1 christos info = inf;
2015 1.1 christos htab = hppa_link_hash_table (info);
2016 1.1 christos if (htab == NULL)
2017 1.1 christos return FALSE;
2018 1.1 christos
2019 1.1 christos hh = hppa_elf_hash_entry (eh);
2020 1.1 christos
2021 1.1 christos if (htab->etab.dynamic_sections_created
2022 1.1 christos && eh->plt.offset != (bfd_vma) -1
2023 1.1 christos && !hh->plabel
2024 1.1 christos && eh->plt.refcount > 0)
2025 1.1 christos {
2026 1.1 christos /* Make an entry in the .plt section. */
2027 1.1 christos sec = htab->splt;
2028 1.1 christos eh->plt.offset = sec->size;
2029 1.1 christos sec->size += PLT_ENTRY_SIZE;
2030 1.1 christos
2031 1.1 christos /* We also need to make an entry in the .rela.plt section. */
2032 1.1 christos htab->srelplt->size += sizeof (Elf32_External_Rela);
2033 1.1 christos htab->need_plt_stub = 1;
2034 1.1 christos }
2035 1.1 christos
2036 1.1 christos if (eh->got.refcount > 0)
2037 1.1 christos {
2038 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
2039 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
2040 1.1 christos if (eh->dynindx == -1
2041 1.1 christos && !eh->forced_local
2042 1.1 christos && eh->type != STT_PARISC_MILLI)
2043 1.1 christos {
2044 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2045 1.1 christos return FALSE;
2046 1.1 christos }
2047 1.1 christos
2048 1.1 christos sec = htab->sgot;
2049 1.1 christos eh->got.offset = sec->size;
2050 1.1 christos sec->size += GOT_ENTRY_SIZE;
2051 1.1 christos /* R_PARISC_TLS_GD* needs two GOT entries */
2052 1.1 christos if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2053 1.1 christos sec->size += GOT_ENTRY_SIZE * 2;
2054 1.1 christos else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2055 1.1 christos sec->size += GOT_ENTRY_SIZE;
2056 1.1 christos if (htab->etab.dynamic_sections_created
2057 1.1 christos && (info->shared
2058 1.1 christos || (eh->dynindx != -1
2059 1.1 christos && !eh->forced_local)))
2060 1.1 christos {
2061 1.1 christos htab->srelgot->size += sizeof (Elf32_External_Rela);
2062 1.1 christos if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2063 1.1 christos htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2064 1.1 christos else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2065 1.1 christos htab->srelgot->size += sizeof (Elf32_External_Rela);
2066 1.1 christos }
2067 1.1 christos }
2068 1.1 christos else
2069 1.1 christos eh->got.offset = (bfd_vma) -1;
2070 1.1 christos
2071 1.1 christos if (hh->dyn_relocs == NULL)
2072 1.1 christos return TRUE;
2073 1.1 christos
2074 1.1 christos /* If this is a -Bsymbolic shared link, then we need to discard all
2075 1.1 christos space allocated for dynamic pc-relative relocs against symbols
2076 1.1 christos defined in a regular object. For the normal shared case, discard
2077 1.1 christos space for relocs that have become local due to symbol visibility
2078 1.1 christos changes. */
2079 1.1 christos if (info->shared)
2080 1.1 christos {
2081 1.1 christos #if RELATIVE_DYNRELOCS
2082 1.1 christos if (SYMBOL_CALLS_LOCAL (info, eh))
2083 1.1 christos {
2084 1.1 christos struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2085 1.1 christos
2086 1.1 christos for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2087 1.1 christos {
2088 1.1 christos hdh_p->count -= hdh_p->relative_count;
2089 1.1 christos hdh_p->relative_count = 0;
2090 1.1 christos if (hdh_p->count == 0)
2091 1.1 christos *hdh_pp = hdh_p->hdh_next;
2092 1.1 christos else
2093 1.1 christos hdh_pp = &hdh_p->hdh_next;
2094 1.1 christos }
2095 1.1 christos }
2096 1.1 christos #endif
2097 1.1 christos
2098 1.1 christos /* Also discard relocs on undefined weak syms with non-default
2099 1.1 christos visibility. */
2100 1.1 christos if (hh->dyn_relocs != NULL
2101 1.1 christos && eh->root.type == bfd_link_hash_undefweak)
2102 1.1 christos {
2103 1.1 christos if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2104 1.1 christos hh->dyn_relocs = NULL;
2105 1.1 christos
2106 1.1 christos /* Make sure undefined weak symbols are output as a dynamic
2107 1.1 christos symbol in PIEs. */
2108 1.1 christos else if (eh->dynindx == -1
2109 1.1 christos && !eh->forced_local)
2110 1.1 christos {
2111 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2112 1.1 christos return FALSE;
2113 1.1 christos }
2114 1.1 christos }
2115 1.1 christos }
2116 1.1 christos else
2117 1.1 christos {
2118 1.1 christos /* For the non-shared case, discard space for relocs against
2119 1.1 christos symbols which turn out to need copy relocs or are not
2120 1.1 christos dynamic. */
2121 1.1 christos
2122 1.1 christos if (!eh->non_got_ref
2123 1.1 christos && ((ELIMINATE_COPY_RELOCS
2124 1.1 christos && eh->def_dynamic
2125 1.1 christos && !eh->def_regular)
2126 1.1 christos || (htab->etab.dynamic_sections_created
2127 1.1 christos && (eh->root.type == bfd_link_hash_undefweak
2128 1.1 christos || eh->root.type == bfd_link_hash_undefined))))
2129 1.1 christos {
2130 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
2131 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
2132 1.1 christos if (eh->dynindx == -1
2133 1.1 christos && !eh->forced_local
2134 1.1 christos && eh->type != STT_PARISC_MILLI)
2135 1.1 christos {
2136 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2137 1.1 christos return FALSE;
2138 1.1 christos }
2139 1.1 christos
2140 1.1 christos /* If that succeeded, we know we'll be keeping all the
2141 1.1 christos relocs. */
2142 1.1 christos if (eh->dynindx != -1)
2143 1.1 christos goto keep;
2144 1.1 christos }
2145 1.1 christos
2146 1.1 christos hh->dyn_relocs = NULL;
2147 1.1 christos return TRUE;
2148 1.1 christos
2149 1.1 christos keep: ;
2150 1.1 christos }
2151 1.1 christos
2152 1.1 christos /* Finally, allocate space. */
2153 1.1 christos for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2154 1.1 christos {
2155 1.1 christos asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2156 1.1 christos sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2157 1.1 christos }
2158 1.1 christos
2159 1.1 christos return TRUE;
2160 1.1 christos }
2161 1.1 christos
2162 1.1 christos /* This function is called via elf_link_hash_traverse to force
2163 1.1 christos millicode symbols local so they do not end up as globals in the
2164 1.1 christos dynamic symbol table. We ought to be able to do this in
2165 1.1 christos adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2166 1.1 christos for all dynamic symbols. Arguably, this is a bug in
2167 1.1 christos elf_adjust_dynamic_symbol. */
2168 1.1 christos
2169 1.1 christos static bfd_boolean
2170 1.1 christos clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2171 1.1 christos struct bfd_link_info *info)
2172 1.1 christos {
2173 1.1 christos if (eh->root.type == bfd_link_hash_warning)
2174 1.1 christos eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2175 1.1 christos
2176 1.1 christos if (eh->type == STT_PARISC_MILLI
2177 1.1 christos && !eh->forced_local)
2178 1.1 christos {
2179 1.1 christos elf32_hppa_hide_symbol (info, eh, TRUE);
2180 1.1 christos }
2181 1.1 christos return TRUE;
2182 1.1 christos }
2183 1.1 christos
2184 1.1 christos /* Find any dynamic relocs that apply to read-only sections. */
2185 1.1 christos
2186 1.1 christos static bfd_boolean
2187 1.1 christos readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2188 1.1 christos {
2189 1.1 christos struct elf32_hppa_link_hash_entry *hh;
2190 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
2191 1.1 christos
2192 1.1 christos if (eh->root.type == bfd_link_hash_warning)
2193 1.1 christos eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2194 1.1 christos
2195 1.1 christos hh = hppa_elf_hash_entry (eh);
2196 1.1 christos for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2197 1.1 christos {
2198 1.1 christos asection *sec = hdh_p->sec->output_section;
2199 1.1 christos
2200 1.1 christos if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2201 1.1 christos {
2202 1.1 christos struct bfd_link_info *info = inf;
2203 1.1 christos
2204 1.1 christos info->flags |= DF_TEXTREL;
2205 1.1 christos
2206 1.1 christos /* Not an error, just cut short the traversal. */
2207 1.1 christos return FALSE;
2208 1.1 christos }
2209 1.1 christos }
2210 1.1 christos return TRUE;
2211 1.1 christos }
2212 1.1 christos
2213 1.1 christos /* Set the sizes of the dynamic sections. */
2214 1.1 christos
2215 1.1 christos static bfd_boolean
2216 1.1 christos elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2217 1.1 christos struct bfd_link_info *info)
2218 1.1 christos {
2219 1.1 christos struct elf32_hppa_link_hash_table *htab;
2220 1.1 christos bfd *dynobj;
2221 1.1 christos bfd *ibfd;
2222 1.1 christos asection *sec;
2223 1.1 christos bfd_boolean relocs;
2224 1.1 christos
2225 1.1 christos htab = hppa_link_hash_table (info);
2226 1.1 christos if (htab == NULL)
2227 1.1 christos return FALSE;
2228 1.1 christos
2229 1.1 christos dynobj = htab->etab.dynobj;
2230 1.1 christos if (dynobj == NULL)
2231 1.1 christos abort ();
2232 1.1 christos
2233 1.1 christos if (htab->etab.dynamic_sections_created)
2234 1.1 christos {
2235 1.1 christos /* Set the contents of the .interp section to the interpreter. */
2236 1.1 christos if (info->executable)
2237 1.1 christos {
2238 1.1 christos sec = bfd_get_section_by_name (dynobj, ".interp");
2239 1.1 christos if (sec == NULL)
2240 1.1 christos abort ();
2241 1.1 christos sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2242 1.1 christos sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2243 1.1 christos }
2244 1.1 christos
2245 1.1 christos /* Force millicode symbols local. */
2246 1.1 christos elf_link_hash_traverse (&htab->etab,
2247 1.1 christos clobber_millicode_symbols,
2248 1.1 christos info);
2249 1.1 christos }
2250 1.1 christos
2251 1.1 christos /* Set up .got and .plt offsets for local syms, and space for local
2252 1.1 christos dynamic relocs. */
2253 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2254 1.1 christos {
2255 1.1 christos bfd_signed_vma *local_got;
2256 1.1 christos bfd_signed_vma *end_local_got;
2257 1.1 christos bfd_signed_vma *local_plt;
2258 1.1 christos bfd_signed_vma *end_local_plt;
2259 1.1 christos bfd_size_type locsymcount;
2260 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2261 1.1 christos asection *srel;
2262 1.1 christos char *local_tls_type;
2263 1.1 christos
2264 1.1 christos if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2265 1.1 christos continue;
2266 1.1 christos
2267 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2268 1.1 christos {
2269 1.1 christos struct elf32_hppa_dyn_reloc_entry *hdh_p;
2270 1.1 christos
2271 1.1 christos for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2272 1.1 christos elf_section_data (sec)->local_dynrel);
2273 1.1 christos hdh_p != NULL;
2274 1.1 christos hdh_p = hdh_p->hdh_next)
2275 1.1 christos {
2276 1.1 christos if (!bfd_is_abs_section (hdh_p->sec)
2277 1.1 christos && bfd_is_abs_section (hdh_p->sec->output_section))
2278 1.1 christos {
2279 1.1 christos /* Input section has been discarded, either because
2280 1.1 christos it is a copy of a linkonce section or due to
2281 1.1 christos linker script /DISCARD/, so we'll be discarding
2282 1.1 christos the relocs too. */
2283 1.1 christos }
2284 1.1 christos else if (hdh_p->count != 0)
2285 1.1 christos {
2286 1.1 christos srel = elf_section_data (hdh_p->sec)->sreloc;
2287 1.1 christos srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2288 1.1 christos if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2289 1.1 christos info->flags |= DF_TEXTREL;
2290 1.1 christos }
2291 1.1 christos }
2292 1.1 christos }
2293 1.1 christos
2294 1.1 christos local_got = elf_local_got_refcounts (ibfd);
2295 1.1 christos if (!local_got)
2296 1.1 christos continue;
2297 1.1 christos
2298 1.1 christos symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2299 1.1 christos locsymcount = symtab_hdr->sh_info;
2300 1.1 christos end_local_got = local_got + locsymcount;
2301 1.1 christos local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2302 1.1 christos sec = htab->sgot;
2303 1.1 christos srel = htab->srelgot;
2304 1.1 christos for (; local_got < end_local_got; ++local_got)
2305 1.1 christos {
2306 1.1 christos if (*local_got > 0)
2307 1.1 christos {
2308 1.1 christos *local_got = sec->size;
2309 1.1 christos sec->size += GOT_ENTRY_SIZE;
2310 1.1 christos if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2311 1.1 christos sec->size += 2 * GOT_ENTRY_SIZE;
2312 1.1 christos else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2313 1.1 christos sec->size += GOT_ENTRY_SIZE;
2314 1.1 christos if (info->shared)
2315 1.1 christos {
2316 1.1 christos srel->size += sizeof (Elf32_External_Rela);
2317 1.1 christos if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2318 1.1 christos srel->size += 2 * sizeof (Elf32_External_Rela);
2319 1.1 christos else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2320 1.1 christos srel->size += sizeof (Elf32_External_Rela);
2321 1.1 christos }
2322 1.1 christos }
2323 1.1 christos else
2324 1.1 christos *local_got = (bfd_vma) -1;
2325 1.1 christos
2326 1.1 christos ++local_tls_type;
2327 1.1 christos }
2328 1.1 christos
2329 1.1 christos local_plt = end_local_got;
2330 1.1 christos end_local_plt = local_plt + locsymcount;
2331 1.1 christos if (! htab->etab.dynamic_sections_created)
2332 1.1 christos {
2333 1.1 christos /* Won't be used, but be safe. */
2334 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
2335 1.1 christos *local_plt = (bfd_vma) -1;
2336 1.1 christos }
2337 1.1 christos else
2338 1.1 christos {
2339 1.1 christos sec = htab->splt;
2340 1.1 christos srel = htab->srelplt;
2341 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
2342 1.1 christos {
2343 1.1 christos if (*local_plt > 0)
2344 1.1 christos {
2345 1.1 christos *local_plt = sec->size;
2346 1.1 christos sec->size += PLT_ENTRY_SIZE;
2347 1.1 christos if (info->shared)
2348 1.1 christos srel->size += sizeof (Elf32_External_Rela);
2349 1.1 christos }
2350 1.1 christos else
2351 1.1 christos *local_plt = (bfd_vma) -1;
2352 1.1 christos }
2353 1.1 christos }
2354 1.1 christos }
2355 1.1 christos
2356 1.1 christos if (htab->tls_ldm_got.refcount > 0)
2357 1.1 christos {
2358 1.1 christos /* Allocate 2 got entries and 1 dynamic reloc for
2359 1.1 christos R_PARISC_TLS_DTPMOD32 relocs. */
2360 1.1 christos htab->tls_ldm_got.offset = htab->sgot->size;
2361 1.1 christos htab->sgot->size += (GOT_ENTRY_SIZE * 2);
2362 1.1 christos htab->srelgot->size += sizeof (Elf32_External_Rela);
2363 1.1 christos }
2364 1.1 christos else
2365 1.1 christos htab->tls_ldm_got.offset = -1;
2366 1.1 christos
2367 1.1 christos /* Do all the .plt entries without relocs first. The dynamic linker
2368 1.1 christos uses the last .plt reloc to find the end of the .plt (and hence
2369 1.1 christos the start of the .got) for lazy linking. */
2370 1.1 christos elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2371 1.1 christos
2372 1.1 christos /* Allocate global sym .plt and .got entries, and space for global
2373 1.1 christos sym dynamic relocs. */
2374 1.1 christos elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2375 1.1 christos
2376 1.1 christos /* The check_relocs and adjust_dynamic_symbol entry points have
2377 1.1 christos determined the sizes of the various dynamic sections. Allocate
2378 1.1 christos memory for them. */
2379 1.1 christos relocs = FALSE;
2380 1.1 christos for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2381 1.1 christos {
2382 1.1 christos if ((sec->flags & SEC_LINKER_CREATED) == 0)
2383 1.1 christos continue;
2384 1.1 christos
2385 1.1 christos if (sec == htab->splt)
2386 1.1 christos {
2387 1.1 christos if (htab->need_plt_stub)
2388 1.1 christos {
2389 1.1 christos /* Make space for the plt stub at the end of the .plt
2390 1.1 christos section. We want this stub right at the end, up
2391 1.1 christos against the .got section. */
2392 1.1 christos int gotalign = bfd_section_alignment (dynobj, htab->sgot);
2393 1.1 christos int pltalign = bfd_section_alignment (dynobj, sec);
2394 1.1 christos bfd_size_type mask;
2395 1.1 christos
2396 1.1 christos if (gotalign > pltalign)
2397 1.1 christos bfd_set_section_alignment (dynobj, sec, gotalign);
2398 1.1 christos mask = ((bfd_size_type) 1 << gotalign) - 1;
2399 1.1 christos sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2400 1.1 christos }
2401 1.1 christos }
2402 1.1 christos else if (sec == htab->sgot
2403 1.1 christos || sec == htab->sdynbss)
2404 1.1 christos ;
2405 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2406 1.1 christos {
2407 1.1 christos if (sec->size != 0)
2408 1.1 christos {
2409 1.1 christos /* Remember whether there are any reloc sections other
2410 1.1 christos than .rela.plt. */
2411 1.1 christos if (sec != htab->srelplt)
2412 1.1 christos relocs = TRUE;
2413 1.1 christos
2414 1.1 christos /* We use the reloc_count field as a counter if we need
2415 1.1 christos to copy relocs into the output file. */
2416 1.1 christos sec->reloc_count = 0;
2417 1.1 christos }
2418 1.1 christos }
2419 1.1 christos else
2420 1.1 christos {
2421 1.1 christos /* It's not one of our sections, so don't allocate space. */
2422 1.1 christos continue;
2423 1.1 christos }
2424 1.1 christos
2425 1.1 christos if (sec->size == 0)
2426 1.1 christos {
2427 1.1 christos /* If we don't need this section, strip it from the
2428 1.1 christos output file. This is mostly to handle .rela.bss and
2429 1.1 christos .rela.plt. We must create both sections in
2430 1.1 christos create_dynamic_sections, because they must be created
2431 1.1 christos before the linker maps input sections to output
2432 1.1 christos sections. The linker does that before
2433 1.1 christos adjust_dynamic_symbol is called, and it is that
2434 1.1 christos function which decides whether anything needs to go
2435 1.1 christos into these sections. */
2436 1.1 christos sec->flags |= SEC_EXCLUDE;
2437 1.1 christos continue;
2438 1.1 christos }
2439 1.1 christos
2440 1.1 christos if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2441 1.1 christos continue;
2442 1.1 christos
2443 1.1 christos /* Allocate memory for the section contents. Zero it, because
2444 1.1 christos we may not fill in all the reloc sections. */
2445 1.1 christos sec->contents = bfd_zalloc (dynobj, sec->size);
2446 1.1 christos if (sec->contents == NULL)
2447 1.1 christos return FALSE;
2448 1.1 christos }
2449 1.1 christos
2450 1.1 christos if (htab->etab.dynamic_sections_created)
2451 1.1 christos {
2452 1.1 christos /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2453 1.1 christos actually has nothing to do with the PLT, it is how we
2454 1.1 christos communicate the LTP value of a load module to the dynamic
2455 1.1 christos linker. */
2456 1.1 christos #define add_dynamic_entry(TAG, VAL) \
2457 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2458 1.1 christos
2459 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0))
2460 1.1 christos return FALSE;
2461 1.1 christos
2462 1.1 christos /* Add some entries to the .dynamic section. We fill in the
2463 1.1 christos values later, in elf32_hppa_finish_dynamic_sections, but we
2464 1.1 christos must add the entries now so that we get the correct size for
2465 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
2466 1.1 christos dynamic linker and used by the debugger. */
2467 1.1 christos if (info->executable)
2468 1.1 christos {
2469 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
2470 1.1 christos return FALSE;
2471 1.1 christos }
2472 1.1 christos
2473 1.1 christos if (htab->srelplt->size != 0)
2474 1.1 christos {
2475 1.1 christos if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2476 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2477 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
2478 1.1 christos return FALSE;
2479 1.1 christos }
2480 1.1 christos
2481 1.1 christos if (relocs)
2482 1.1 christos {
2483 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
2484 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
2485 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2486 1.1 christos return FALSE;
2487 1.1 christos
2488 1.1 christos /* If any dynamic relocs apply to a read-only section,
2489 1.1 christos then we need a DT_TEXTREL entry. */
2490 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
2491 1.1 christos elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2492 1.1 christos
2493 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
2494 1.1 christos {
2495 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
2496 1.1 christos return FALSE;
2497 1.1 christos }
2498 1.1 christos }
2499 1.1 christos }
2500 1.1 christos #undef add_dynamic_entry
2501 1.1 christos
2502 1.1 christos return TRUE;
2503 1.1 christos }
2504 1.1 christos
2505 1.1 christos /* External entry points for sizing and building linker stubs. */
2506 1.1 christos
2507 1.1 christos /* Set up various things so that we can make a list of input sections
2508 1.1 christos for each output section included in the link. Returns -1 on error,
2509 1.1 christos 0 when no stubs will be needed, and 1 on success. */
2510 1.1 christos
2511 1.1 christos int
2512 1.1 christos elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2513 1.1 christos {
2514 1.1 christos bfd *input_bfd;
2515 1.1 christos unsigned int bfd_count;
2516 1.1 christos int top_id, top_index;
2517 1.1 christos asection *section;
2518 1.1 christos asection **input_list, **list;
2519 1.1 christos bfd_size_type amt;
2520 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2521 1.1 christos
2522 1.1 christos if (htab == NULL)
2523 1.1 christos return -1;
2524 1.1 christos
2525 1.1 christos /* Count the number of input BFDs and find the top input section id. */
2526 1.1 christos for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2527 1.1 christos input_bfd != NULL;
2528 1.1 christos input_bfd = input_bfd->link_next)
2529 1.1 christos {
2530 1.1 christos bfd_count += 1;
2531 1.1 christos for (section = input_bfd->sections;
2532 1.1 christos section != NULL;
2533 1.1 christos section = section->next)
2534 1.1 christos {
2535 1.1 christos if (top_id < section->id)
2536 1.1 christos top_id = section->id;
2537 1.1 christos }
2538 1.1 christos }
2539 1.1 christos htab->bfd_count = bfd_count;
2540 1.1 christos
2541 1.1 christos amt = sizeof (struct map_stub) * (top_id + 1);
2542 1.1 christos htab->stub_group = bfd_zmalloc (amt);
2543 1.1 christos if (htab->stub_group == NULL)
2544 1.1 christos return -1;
2545 1.1 christos
2546 1.1 christos /* We can't use output_bfd->section_count here to find the top output
2547 1.1 christos section index as some sections may have been removed, and
2548 1.1 christos strip_excluded_output_sections doesn't renumber the indices. */
2549 1.1 christos for (section = output_bfd->sections, top_index = 0;
2550 1.1 christos section != NULL;
2551 1.1 christos section = section->next)
2552 1.1 christos {
2553 1.1 christos if (top_index < section->index)
2554 1.1 christos top_index = section->index;
2555 1.1 christos }
2556 1.1 christos
2557 1.1 christos htab->top_index = top_index;
2558 1.1 christos amt = sizeof (asection *) * (top_index + 1);
2559 1.1 christos input_list = bfd_malloc (amt);
2560 1.1 christos htab->input_list = input_list;
2561 1.1 christos if (input_list == NULL)
2562 1.1 christos return -1;
2563 1.1 christos
2564 1.1 christos /* For sections we aren't interested in, mark their entries with a
2565 1.1 christos value we can check later. */
2566 1.1 christos list = input_list + top_index;
2567 1.1 christos do
2568 1.1 christos *list = bfd_abs_section_ptr;
2569 1.1 christos while (list-- != input_list);
2570 1.1 christos
2571 1.1 christos for (section = output_bfd->sections;
2572 1.1 christos section != NULL;
2573 1.1 christos section = section->next)
2574 1.1 christos {
2575 1.1 christos if ((section->flags & SEC_CODE) != 0)
2576 1.1 christos input_list[section->index] = NULL;
2577 1.1 christos }
2578 1.1 christos
2579 1.1 christos return 1;
2580 1.1 christos }
2581 1.1 christos
2582 1.1 christos /* The linker repeatedly calls this function for each input section,
2583 1.1 christos in the order that input sections are linked into output sections.
2584 1.1 christos Build lists of input sections to determine groupings between which
2585 1.1 christos we may insert linker stubs. */
2586 1.1 christos
2587 1.1 christos void
2588 1.1 christos elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2589 1.1 christos {
2590 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2591 1.1 christos
2592 1.1 christos if (htab == NULL)
2593 1.1 christos return;
2594 1.1 christos
2595 1.1 christos if (isec->output_section->index <= htab->top_index)
2596 1.1 christos {
2597 1.1 christos asection **list = htab->input_list + isec->output_section->index;
2598 1.1 christos if (*list != bfd_abs_section_ptr)
2599 1.1 christos {
2600 1.1 christos /* Steal the link_sec pointer for our list. */
2601 1.1 christos #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2602 1.1 christos /* This happens to make the list in reverse order,
2603 1.1 christos which is what we want. */
2604 1.1 christos PREV_SEC (isec) = *list;
2605 1.1 christos *list = isec;
2606 1.1 christos }
2607 1.1 christos }
2608 1.1 christos }
2609 1.1 christos
2610 1.1 christos /* See whether we can group stub sections together. Grouping stub
2611 1.1 christos sections may result in fewer stubs. More importantly, we need to
2612 1.1 christos put all .init* and .fini* stubs at the beginning of the .init or
2613 1.1 christos .fini output sections respectively, because glibc splits the
2614 1.1 christos _init and _fini functions into multiple parts. Putting a stub in
2615 1.1 christos the middle of a function is not a good idea. */
2616 1.1 christos
2617 1.1 christos static void
2618 1.1 christos group_sections (struct elf32_hppa_link_hash_table *htab,
2619 1.1 christos bfd_size_type stub_group_size,
2620 1.1 christos bfd_boolean stubs_always_before_branch)
2621 1.1 christos {
2622 1.1 christos asection **list = htab->input_list + htab->top_index;
2623 1.1 christos do
2624 1.1 christos {
2625 1.1 christos asection *tail = *list;
2626 1.1 christos if (tail == bfd_abs_section_ptr)
2627 1.1 christos continue;
2628 1.1 christos while (tail != NULL)
2629 1.1 christos {
2630 1.1 christos asection *curr;
2631 1.1 christos asection *prev;
2632 1.1 christos bfd_size_type total;
2633 1.1 christos bfd_boolean big_sec;
2634 1.1 christos
2635 1.1 christos curr = tail;
2636 1.1 christos total = tail->size;
2637 1.1 christos big_sec = total >= stub_group_size;
2638 1.1 christos
2639 1.1 christos while ((prev = PREV_SEC (curr)) != NULL
2640 1.1 christos && ((total += curr->output_offset - prev->output_offset)
2641 1.1 christos < stub_group_size))
2642 1.1 christos curr = prev;
2643 1.1 christos
2644 1.1 christos /* OK, the size from the start of CURR to the end is less
2645 1.1 christos than 240000 bytes and thus can be handled by one stub
2646 1.1 christos section. (or the tail section is itself larger than
2647 1.1 christos 240000 bytes, in which case we may be toast.)
2648 1.1 christos We should really be keeping track of the total size of
2649 1.1 christos stubs added here, as stubs contribute to the final output
2650 1.1 christos section size. That's a little tricky, and this way will
2651 1.1 christos only break if stubs added total more than 22144 bytes, or
2652 1.1 christos 2768 long branch stubs. It seems unlikely for more than
2653 1.1 christos 2768 different functions to be called, especially from
2654 1.1 christos code only 240000 bytes long. This limit used to be
2655 1.1 christos 250000, but c++ code tends to generate lots of little
2656 1.1 christos functions, and sometimes violated the assumption. */
2657 1.1 christos do
2658 1.1 christos {
2659 1.1 christos prev = PREV_SEC (tail);
2660 1.1 christos /* Set up this stub group. */
2661 1.1 christos htab->stub_group[tail->id].link_sec = curr;
2662 1.1 christos }
2663 1.1 christos while (tail != curr && (tail = prev) != NULL);
2664 1.1 christos
2665 1.1 christos /* But wait, there's more! Input sections up to 240000
2666 1.1 christos bytes before the stub section can be handled by it too.
2667 1.1 christos Don't do this if we have a really large section after the
2668 1.1 christos stubs, as adding more stubs increases the chance that
2669 1.1 christos branches may not reach into the stub section. */
2670 1.1 christos if (!stubs_always_before_branch && !big_sec)
2671 1.1 christos {
2672 1.1 christos total = 0;
2673 1.1 christos while (prev != NULL
2674 1.1 christos && ((total += tail->output_offset - prev->output_offset)
2675 1.1 christos < stub_group_size))
2676 1.1 christos {
2677 1.1 christos tail = prev;
2678 1.1 christos prev = PREV_SEC (tail);
2679 1.1 christos htab->stub_group[tail->id].link_sec = curr;
2680 1.1 christos }
2681 1.1 christos }
2682 1.1 christos tail = prev;
2683 1.1 christos }
2684 1.1 christos }
2685 1.1 christos while (list-- != htab->input_list);
2686 1.1 christos free (htab->input_list);
2687 1.1 christos #undef PREV_SEC
2688 1.1 christos }
2689 1.1 christos
2690 1.1 christos /* Read in all local syms for all input bfds, and create hash entries
2691 1.1 christos for export stubs if we are building a multi-subspace shared lib.
2692 1.1 christos Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2693 1.1 christos
2694 1.1 christos static int
2695 1.1 christos get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2696 1.1 christos {
2697 1.1 christos unsigned int bfd_indx;
2698 1.1 christos Elf_Internal_Sym *local_syms, **all_local_syms;
2699 1.1 christos int stub_changed = 0;
2700 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2701 1.1 christos
2702 1.1 christos if (htab == NULL)
2703 1.1 christos return -1;
2704 1.1 christos
2705 1.1 christos /* We want to read in symbol extension records only once. To do this
2706 1.1 christos we need to read in the local symbols in parallel and save them for
2707 1.1 christos later use; so hold pointers to the local symbols in an array. */
2708 1.1 christos bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2709 1.1 christos all_local_syms = bfd_zmalloc (amt);
2710 1.1 christos htab->all_local_syms = all_local_syms;
2711 1.1 christos if (all_local_syms == NULL)
2712 1.1 christos return -1;
2713 1.1 christos
2714 1.1 christos /* Walk over all the input BFDs, swapping in local symbols.
2715 1.1 christos If we are creating a shared library, create hash entries for the
2716 1.1 christos export stubs. */
2717 1.1 christos for (bfd_indx = 0;
2718 1.1 christos input_bfd != NULL;
2719 1.1 christos input_bfd = input_bfd->link_next, bfd_indx++)
2720 1.1 christos {
2721 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2722 1.1 christos
2723 1.1 christos /* We'll need the symbol table in a second. */
2724 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2725 1.1 christos if (symtab_hdr->sh_info == 0)
2726 1.1 christos continue;
2727 1.1 christos
2728 1.1 christos /* We need an array of the local symbols attached to the input bfd. */
2729 1.1 christos local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2730 1.1 christos if (local_syms == NULL)
2731 1.1 christos {
2732 1.1 christos local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2733 1.1 christos symtab_hdr->sh_info, 0,
2734 1.1 christos NULL, NULL, NULL);
2735 1.1 christos /* Cache them for elf_link_input_bfd. */
2736 1.1 christos symtab_hdr->contents = (unsigned char *) local_syms;
2737 1.1 christos }
2738 1.1 christos if (local_syms == NULL)
2739 1.1 christos return -1;
2740 1.1 christos
2741 1.1 christos all_local_syms[bfd_indx] = local_syms;
2742 1.1 christos
2743 1.1 christos if (info->shared && htab->multi_subspace)
2744 1.1 christos {
2745 1.1 christos struct elf_link_hash_entry **eh_syms;
2746 1.1 christos struct elf_link_hash_entry **eh_symend;
2747 1.1 christos unsigned int symcount;
2748 1.1 christos
2749 1.1 christos symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2750 1.1 christos - symtab_hdr->sh_info);
2751 1.1 christos eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2752 1.1 christos eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2753 1.1 christos
2754 1.1 christos /* Look through the global syms for functions; We need to
2755 1.1 christos build export stubs for all globally visible functions. */
2756 1.1 christos for (; eh_syms < eh_symend; eh_syms++)
2757 1.1 christos {
2758 1.1 christos struct elf32_hppa_link_hash_entry *hh;
2759 1.1 christos
2760 1.1 christos hh = hppa_elf_hash_entry (*eh_syms);
2761 1.1 christos
2762 1.1 christos while (hh->eh.root.type == bfd_link_hash_indirect
2763 1.1 christos || hh->eh.root.type == bfd_link_hash_warning)
2764 1.1 christos hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2765 1.1 christos
2766 1.1 christos /* At this point in the link, undefined syms have been
2767 1.1 christos resolved, so we need to check that the symbol was
2768 1.1 christos defined in this BFD. */
2769 1.1 christos if ((hh->eh.root.type == bfd_link_hash_defined
2770 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak)
2771 1.1 christos && hh->eh.type == STT_FUNC
2772 1.1 christos && hh->eh.root.u.def.section->output_section != NULL
2773 1.1 christos && (hh->eh.root.u.def.section->output_section->owner
2774 1.1 christos == output_bfd)
2775 1.1 christos && hh->eh.root.u.def.section->owner == input_bfd
2776 1.1 christos && hh->eh.def_regular
2777 1.1 christos && !hh->eh.forced_local
2778 1.1 christos && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2779 1.1 christos {
2780 1.1 christos asection *sec;
2781 1.1 christos const char *stub_name;
2782 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
2783 1.1 christos
2784 1.1 christos sec = hh->eh.root.u.def.section;
2785 1.1 christos stub_name = hh_name (hh);
2786 1.1 christos hsh = hppa_stub_hash_lookup (&htab->bstab,
2787 1.1 christos stub_name,
2788 1.1 christos FALSE, FALSE);
2789 1.1 christos if (hsh == NULL)
2790 1.1 christos {
2791 1.1 christos hsh = hppa_add_stub (stub_name, sec, htab);
2792 1.1 christos if (!hsh)
2793 1.1 christos return -1;
2794 1.1 christos
2795 1.1 christos hsh->target_value = hh->eh.root.u.def.value;
2796 1.1 christos hsh->target_section = hh->eh.root.u.def.section;
2797 1.1 christos hsh->stub_type = hppa_stub_export;
2798 1.1 christos hsh->hh = hh;
2799 1.1 christos stub_changed = 1;
2800 1.1 christos }
2801 1.1 christos else
2802 1.1 christos {
2803 1.1 christos (*_bfd_error_handler) (_("%B: duplicate export stub %s"),
2804 1.1 christos input_bfd,
2805 1.1 christos stub_name);
2806 1.1 christos }
2807 1.1 christos }
2808 1.1 christos }
2809 1.1 christos }
2810 1.1 christos }
2811 1.1 christos
2812 1.1 christos return stub_changed;
2813 1.1 christos }
2814 1.1 christos
2815 1.1 christos /* Determine and set the size of the stub section for a final link.
2816 1.1 christos
2817 1.1 christos The basic idea here is to examine all the relocations looking for
2818 1.1 christos PC-relative calls to a target that is unreachable with a "bl"
2819 1.1 christos instruction. */
2820 1.1 christos
2821 1.1 christos bfd_boolean
2822 1.1 christos elf32_hppa_size_stubs
2823 1.1 christos (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2824 1.1 christos bfd_boolean multi_subspace, bfd_signed_vma group_size,
2825 1.1 christos asection * (*add_stub_section) (const char *, asection *),
2826 1.1 christos void (*layout_sections_again) (void))
2827 1.1 christos {
2828 1.1 christos bfd_size_type stub_group_size;
2829 1.1 christos bfd_boolean stubs_always_before_branch;
2830 1.1 christos bfd_boolean stub_changed;
2831 1.1 christos struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2832 1.1 christos
2833 1.1 christos if (htab == NULL)
2834 1.1 christos return FALSE;
2835 1.1 christos
2836 1.1 christos /* Stash our params away. */
2837 1.1 christos htab->stub_bfd = stub_bfd;
2838 1.1 christos htab->multi_subspace = multi_subspace;
2839 1.1 christos htab->add_stub_section = add_stub_section;
2840 1.1 christos htab->layout_sections_again = layout_sections_again;
2841 1.1 christos stubs_always_before_branch = group_size < 0;
2842 1.1 christos if (group_size < 0)
2843 1.1 christos stub_group_size = -group_size;
2844 1.1 christos else
2845 1.1 christos stub_group_size = group_size;
2846 1.1 christos if (stub_group_size == 1)
2847 1.1 christos {
2848 1.1 christos /* Default values. */
2849 1.1 christos if (stubs_always_before_branch)
2850 1.1 christos {
2851 1.1 christos stub_group_size = 7680000;
2852 1.1 christos if (htab->has_17bit_branch || htab->multi_subspace)
2853 1.1 christos stub_group_size = 240000;
2854 1.1 christos if (htab->has_12bit_branch)
2855 1.1 christos stub_group_size = 7500;
2856 1.1 christos }
2857 1.1 christos else
2858 1.1 christos {
2859 1.1 christos stub_group_size = 6971392;
2860 1.1 christos if (htab->has_17bit_branch || htab->multi_subspace)
2861 1.1 christos stub_group_size = 217856;
2862 1.1 christos if (htab->has_12bit_branch)
2863 1.1 christos stub_group_size = 6808;
2864 1.1 christos }
2865 1.1 christos }
2866 1.1 christos
2867 1.1 christos group_sections (htab, stub_group_size, stubs_always_before_branch);
2868 1.1 christos
2869 1.1 christos switch (get_local_syms (output_bfd, info->input_bfds, info))
2870 1.1 christos {
2871 1.1 christos default:
2872 1.1 christos if (htab->all_local_syms)
2873 1.1 christos goto error_ret_free_local;
2874 1.1 christos return FALSE;
2875 1.1 christos
2876 1.1 christos case 0:
2877 1.1 christos stub_changed = FALSE;
2878 1.1 christos break;
2879 1.1 christos
2880 1.1 christos case 1:
2881 1.1 christos stub_changed = TRUE;
2882 1.1 christos break;
2883 1.1 christos }
2884 1.1 christos
2885 1.1 christos while (1)
2886 1.1 christos {
2887 1.1 christos bfd *input_bfd;
2888 1.1 christos unsigned int bfd_indx;
2889 1.1 christos asection *stub_sec;
2890 1.1 christos
2891 1.1 christos for (input_bfd = info->input_bfds, bfd_indx = 0;
2892 1.1 christos input_bfd != NULL;
2893 1.1 christos input_bfd = input_bfd->link_next, bfd_indx++)
2894 1.1 christos {
2895 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2896 1.1 christos asection *section;
2897 1.1 christos Elf_Internal_Sym *local_syms;
2898 1.1 christos
2899 1.1 christos /* We'll need the symbol table in a second. */
2900 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2901 1.1 christos if (symtab_hdr->sh_info == 0)
2902 1.1 christos continue;
2903 1.1 christos
2904 1.1 christos local_syms = htab->all_local_syms[bfd_indx];
2905 1.1 christos
2906 1.1 christos /* Walk over each section attached to the input bfd. */
2907 1.1 christos for (section = input_bfd->sections;
2908 1.1 christos section != NULL;
2909 1.1 christos section = section->next)
2910 1.1 christos {
2911 1.1 christos Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2912 1.1 christos
2913 1.1 christos /* If there aren't any relocs, then there's nothing more
2914 1.1 christos to do. */
2915 1.1 christos if ((section->flags & SEC_RELOC) == 0
2916 1.1 christos || section->reloc_count == 0)
2917 1.1 christos continue;
2918 1.1 christos
2919 1.1 christos /* If this section is a link-once section that will be
2920 1.1 christos discarded, then don't create any stubs. */
2921 1.1 christos if (section->output_section == NULL
2922 1.1 christos || section->output_section->owner != output_bfd)
2923 1.1 christos continue;
2924 1.1 christos
2925 1.1 christos /* Get the relocs. */
2926 1.1 christos internal_relocs
2927 1.1 christos = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2928 1.1 christos info->keep_memory);
2929 1.1 christos if (internal_relocs == NULL)
2930 1.1 christos goto error_ret_free_local;
2931 1.1 christos
2932 1.1 christos /* Now examine each relocation. */
2933 1.1 christos irela = internal_relocs;
2934 1.1 christos irelaend = irela + section->reloc_count;
2935 1.1 christos for (; irela < irelaend; irela++)
2936 1.1 christos {
2937 1.1 christos unsigned int r_type, r_indx;
2938 1.1 christos enum elf32_hppa_stub_type stub_type;
2939 1.1 christos struct elf32_hppa_stub_hash_entry *hsh;
2940 1.1 christos asection *sym_sec;
2941 1.1 christos bfd_vma sym_value;
2942 1.1 christos bfd_vma destination;
2943 1.1 christos struct elf32_hppa_link_hash_entry *hh;
2944 1.1 christos char *stub_name;
2945 1.1 christos const asection *id_sec;
2946 1.1 christos
2947 1.1 christos r_type = ELF32_R_TYPE (irela->r_info);
2948 1.1 christos r_indx = ELF32_R_SYM (irela->r_info);
2949 1.1 christos
2950 1.1 christos if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2951 1.1 christos {
2952 1.1 christos bfd_set_error (bfd_error_bad_value);
2953 1.1 christos error_ret_free_internal:
2954 1.1 christos if (elf_section_data (section)->relocs == NULL)
2955 1.1 christos free (internal_relocs);
2956 1.1 christos goto error_ret_free_local;
2957 1.1 christos }
2958 1.1 christos
2959 1.1 christos /* Only look for stubs on call instructions. */
2960 1.1 christos if (r_type != (unsigned int) R_PARISC_PCREL12F
2961 1.1 christos && r_type != (unsigned int) R_PARISC_PCREL17F
2962 1.1 christos && r_type != (unsigned int) R_PARISC_PCREL22F)
2963 1.1 christos continue;
2964 1.1 christos
2965 1.1 christos /* Now determine the call target, its name, value,
2966 1.1 christos section. */
2967 1.1 christos sym_sec = NULL;
2968 1.1 christos sym_value = 0;
2969 1.1 christos destination = 0;
2970 1.1 christos hh = NULL;
2971 1.1 christos if (r_indx < symtab_hdr->sh_info)
2972 1.1 christos {
2973 1.1 christos /* It's a local symbol. */
2974 1.1 christos Elf_Internal_Sym *sym;
2975 1.1 christos Elf_Internal_Shdr *hdr;
2976 1.1 christos unsigned int shndx;
2977 1.1 christos
2978 1.1 christos sym = local_syms + r_indx;
2979 1.1 christos if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2980 1.1 christos sym_value = sym->st_value;
2981 1.1 christos shndx = sym->st_shndx;
2982 1.1 christos if (shndx < elf_numsections (input_bfd))
2983 1.1 christos {
2984 1.1 christos hdr = elf_elfsections (input_bfd)[shndx];
2985 1.1 christos sym_sec = hdr->bfd_section;
2986 1.1 christos destination = (sym_value + irela->r_addend
2987 1.1 christos + sym_sec->output_offset
2988 1.1 christos + sym_sec->output_section->vma);
2989 1.1 christos }
2990 1.1 christos }
2991 1.1 christos else
2992 1.1 christos {
2993 1.1 christos /* It's an external symbol. */
2994 1.1 christos int e_indx;
2995 1.1 christos
2996 1.1 christos e_indx = r_indx - symtab_hdr->sh_info;
2997 1.1 christos hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2998 1.1 christos
2999 1.1 christos while (hh->eh.root.type == bfd_link_hash_indirect
3000 1.1 christos || hh->eh.root.type == bfd_link_hash_warning)
3001 1.1 christos hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
3002 1.1 christos
3003 1.1 christos if (hh->eh.root.type == bfd_link_hash_defined
3004 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak)
3005 1.1 christos {
3006 1.1 christos sym_sec = hh->eh.root.u.def.section;
3007 1.1 christos sym_value = hh->eh.root.u.def.value;
3008 1.1 christos if (sym_sec->output_section != NULL)
3009 1.1 christos destination = (sym_value + irela->r_addend
3010 1.1 christos + sym_sec->output_offset
3011 1.1 christos + sym_sec->output_section->vma);
3012 1.1 christos }
3013 1.1 christos else if (hh->eh.root.type == bfd_link_hash_undefweak)
3014 1.1 christos {
3015 1.1 christos if (! info->shared)
3016 1.1 christos continue;
3017 1.1 christos }
3018 1.1 christos else if (hh->eh.root.type == bfd_link_hash_undefined)
3019 1.1 christos {
3020 1.1 christos if (! (info->unresolved_syms_in_objects == RM_IGNORE
3021 1.1 christos && (ELF_ST_VISIBILITY (hh->eh.other)
3022 1.1 christos == STV_DEFAULT)
3023 1.1 christos && hh->eh.type != STT_PARISC_MILLI))
3024 1.1 christos continue;
3025 1.1 christos }
3026 1.1 christos else
3027 1.1 christos {
3028 1.1 christos bfd_set_error (bfd_error_bad_value);
3029 1.1 christos goto error_ret_free_internal;
3030 1.1 christos }
3031 1.1 christos }
3032 1.1 christos
3033 1.1 christos /* Determine what (if any) linker stub is needed. */
3034 1.1 christos stub_type = hppa_type_of_stub (section, irela, hh,
3035 1.1 christos destination, info);
3036 1.1 christos if (stub_type == hppa_stub_none)
3037 1.1 christos continue;
3038 1.1 christos
3039 1.1 christos /* Support for grouping stub sections. */
3040 1.1 christos id_sec = htab->stub_group[section->id].link_sec;
3041 1.1 christos
3042 1.1 christos /* Get the name of this stub. */
3043 1.1 christos stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
3044 1.1 christos if (!stub_name)
3045 1.1 christos goto error_ret_free_internal;
3046 1.1 christos
3047 1.1 christos hsh = hppa_stub_hash_lookup (&htab->bstab,
3048 1.1 christos stub_name,
3049 1.1 christos FALSE, FALSE);
3050 1.1 christos if (hsh != NULL)
3051 1.1 christos {
3052 1.1 christos /* The proper stub has already been created. */
3053 1.1 christos free (stub_name);
3054 1.1 christos continue;
3055 1.1 christos }
3056 1.1 christos
3057 1.1 christos hsh = hppa_add_stub (stub_name, section, htab);
3058 1.1 christos if (hsh == NULL)
3059 1.1 christos {
3060 1.1 christos free (stub_name);
3061 1.1 christos goto error_ret_free_internal;
3062 1.1 christos }
3063 1.1 christos
3064 1.1 christos hsh->target_value = sym_value;
3065 1.1 christos hsh->target_section = sym_sec;
3066 1.1 christos hsh->stub_type = stub_type;
3067 1.1 christos if (info->shared)
3068 1.1 christos {
3069 1.1 christos if (stub_type == hppa_stub_import)
3070 1.1 christos hsh->stub_type = hppa_stub_import_shared;
3071 1.1 christos else if (stub_type == hppa_stub_long_branch)
3072 1.1 christos hsh->stub_type = hppa_stub_long_branch_shared;
3073 1.1 christos }
3074 1.1 christos hsh->hh = hh;
3075 1.1 christos stub_changed = TRUE;
3076 1.1 christos }
3077 1.1 christos
3078 1.1 christos /* We're done with the internal relocs, free them. */
3079 1.1 christos if (elf_section_data (section)->relocs == NULL)
3080 1.1 christos free (internal_relocs);
3081 1.1 christos }
3082 1.1 christos }
3083 1.1 christos
3084 1.1 christos if (!stub_changed)
3085 1.1 christos break;
3086 1.1 christos
3087 1.1 christos /* OK, we've added some stubs. Find out the new size of the
3088 1.1 christos stub sections. */
3089 1.1 christos for (stub_sec = htab->stub_bfd->sections;
3090 1.1 christos stub_sec != NULL;
3091 1.1 christos stub_sec = stub_sec->next)
3092 1.1 christos stub_sec->size = 0;
3093 1.1 christos
3094 1.1 christos bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3095 1.1 christos
3096 1.1 christos /* Ask the linker to do its stuff. */
3097 1.1 christos (*htab->layout_sections_again) ();
3098 1.1 christos stub_changed = FALSE;
3099 1.1 christos }
3100 1.1 christos
3101 1.1 christos free (htab->all_local_syms);
3102 1.1 christos return TRUE;
3103 1.1 christos
3104 1.1 christos error_ret_free_local:
3105 1.1 christos free (htab->all_local_syms);
3106 1.1 christos return FALSE;
3107 1.1 christos }
3108 1.1 christos
3109 1.1 christos /* For a final link, this function is called after we have sized the
3110 1.1 christos stubs to provide a value for __gp. */
3111 1.1 christos
3112 1.1 christos bfd_boolean
3113 1.1 christos elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3114 1.1 christos {
3115 1.1 christos struct bfd_link_hash_entry *h;
3116 1.1 christos asection *sec = NULL;
3117 1.1 christos bfd_vma gp_val = 0;
3118 1.1 christos struct elf32_hppa_link_hash_table *htab;
3119 1.1 christos
3120 1.1 christos htab = hppa_link_hash_table (info);
3121 1.1 christos if (htab == NULL)
3122 1.1 christos return FALSE;
3123 1.1 christos
3124 1.1 christos h = bfd_link_hash_lookup (&htab->etab.root, "$global$", FALSE, FALSE, FALSE);
3125 1.1 christos
3126 1.1 christos if (h != NULL
3127 1.1 christos && (h->type == bfd_link_hash_defined
3128 1.1 christos || h->type == bfd_link_hash_defweak))
3129 1.1 christos {
3130 1.1 christos gp_val = h->u.def.value;
3131 1.1 christos sec = h->u.def.section;
3132 1.1 christos }
3133 1.1 christos else
3134 1.1 christos {
3135 1.1 christos asection *splt = bfd_get_section_by_name (abfd, ".plt");
3136 1.1 christos asection *sgot = bfd_get_section_by_name (abfd, ".got");
3137 1.1 christos
3138 1.1 christos /* Choose to point our LTP at, in this order, one of .plt, .got,
3139 1.1 christos or .data, if these sections exist. In the case of choosing
3140 1.1 christos .plt try to make the LTP ideal for addressing anywhere in the
3141 1.1 christos .plt or .got with a 14 bit signed offset. Typically, the end
3142 1.1 christos of the .plt is the start of the .got, so choose .plt + 0x2000
3143 1.1 christos if either the .plt or .got is larger than 0x2000. If both
3144 1.1 christos the .plt and .got are smaller than 0x2000, choose the end of
3145 1.1 christos the .plt section. */
3146 1.1 christos sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3147 1.1 christos ? NULL : splt;
3148 1.1 christos if (sec != NULL)
3149 1.1 christos {
3150 1.1 christos gp_val = sec->size;
3151 1.1 christos if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3152 1.1 christos {
3153 1.1 christos gp_val = 0x2000;
3154 1.1 christos }
3155 1.1 christos }
3156 1.1 christos else
3157 1.1 christos {
3158 1.1 christos sec = sgot;
3159 1.1 christos if (sec != NULL)
3160 1.1 christos {
3161 1.1 christos if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3162 1.1 christos {
3163 1.1 christos /* We know we don't have a .plt. If .got is large,
3164 1.1 christos offset our LTP. */
3165 1.1 christos if (sec->size > 0x2000)
3166 1.1 christos gp_val = 0x2000;
3167 1.1 christos }
3168 1.1 christos }
3169 1.1 christos else
3170 1.1 christos {
3171 1.1 christos /* No .plt or .got. Who cares what the LTP is? */
3172 1.1 christos sec = bfd_get_section_by_name (abfd, ".data");
3173 1.1 christos }
3174 1.1 christos }
3175 1.1 christos
3176 1.1 christos if (h != NULL)
3177 1.1 christos {
3178 1.1 christos h->type = bfd_link_hash_defined;
3179 1.1 christos h->u.def.value = gp_val;
3180 1.1 christos if (sec != NULL)
3181 1.1 christos h->u.def.section = sec;
3182 1.1 christos else
3183 1.1 christos h->u.def.section = bfd_abs_section_ptr;
3184 1.1 christos }
3185 1.1 christos }
3186 1.1 christos
3187 1.1 christos if (sec != NULL && sec->output_section != NULL)
3188 1.1 christos gp_val += sec->output_section->vma + sec->output_offset;
3189 1.1 christos
3190 1.1 christos elf_gp (abfd) = gp_val;
3191 1.1 christos return TRUE;
3192 1.1 christos }
3193 1.1 christos
3194 1.1 christos /* Build all the stubs associated with the current output file. The
3195 1.1 christos stubs are kept in a hash table attached to the main linker hash
3196 1.1 christos table. We also set up the .plt entries for statically linked PIC
3197 1.1 christos functions here. This function is called via hppaelf_finish in the
3198 1.1 christos linker. */
3199 1.1 christos
3200 1.1 christos bfd_boolean
3201 1.1 christos elf32_hppa_build_stubs (struct bfd_link_info *info)
3202 1.1 christos {
3203 1.1 christos asection *stub_sec;
3204 1.1 christos struct bfd_hash_table *table;
3205 1.1 christos struct elf32_hppa_link_hash_table *htab;
3206 1.1 christos
3207 1.1 christos htab = hppa_link_hash_table (info);
3208 1.1 christos if (htab == NULL)
3209 1.1 christos return FALSE;
3210 1.1 christos
3211 1.1 christos for (stub_sec = htab->stub_bfd->sections;
3212 1.1 christos stub_sec != NULL;
3213 1.1 christos stub_sec = stub_sec->next)
3214 1.1 christos {
3215 1.1 christos bfd_size_type size;
3216 1.1 christos
3217 1.1 christos /* Allocate memory to hold the linker stubs. */
3218 1.1 christos size = stub_sec->size;
3219 1.1 christos stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3220 1.1 christos if (stub_sec->contents == NULL && size != 0)
3221 1.1 christos return FALSE;
3222 1.1 christos stub_sec->size = 0;
3223 1.1 christos }
3224 1.1 christos
3225 1.1 christos /* Build the stubs as directed by the stub hash table. */
3226 1.1 christos table = &htab->bstab;
3227 1.1 christos bfd_hash_traverse (table, hppa_build_one_stub, info);
3228 1.1 christos
3229 1.1 christos return TRUE;
3230 1.1 christos }
3231 1.1 christos
3232 1.1 christos /* Return the base vma address which should be subtracted from the real
3233 1.1 christos address when resolving a dtpoff relocation.
3234 1.1 christos This is PT_TLS segment p_vaddr. */
3235 1.1 christos
3236 1.1 christos static bfd_vma
3237 1.1 christos dtpoff_base (struct bfd_link_info *info)
3238 1.1 christos {
3239 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
3240 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
3241 1.1 christos return 0;
3242 1.1 christos return elf_hash_table (info)->tls_sec->vma;
3243 1.1 christos }
3244 1.1 christos
3245 1.1 christos /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3246 1.1 christos
3247 1.1 christos static bfd_vma
3248 1.1 christos tpoff (struct bfd_link_info *info, bfd_vma address)
3249 1.1 christos {
3250 1.1 christos struct elf_link_hash_table *htab = elf_hash_table (info);
3251 1.1 christos
3252 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
3253 1.1 christos if (htab->tls_sec == NULL)
3254 1.1 christos return 0;
3255 1.1 christos /* hppa TLS ABI is variant I and static TLS block start just after
3256 1.1 christos tcbhead structure which has 2 pointer fields. */
3257 1.1 christos return (address - htab->tls_sec->vma
3258 1.1 christos + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3259 1.1 christos }
3260 1.1 christos
3261 1.1 christos /* Perform a final link. */
3262 1.1 christos
3263 1.1 christos static bfd_boolean
3264 1.1 christos elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3265 1.1 christos {
3266 1.1 christos /* Invoke the regular ELF linker to do all the work. */
3267 1.1 christos if (!bfd_elf_final_link (abfd, info))
3268 1.1 christos return FALSE;
3269 1.1 christos
3270 1.1 christos /* If we're producing a final executable, sort the contents of the
3271 1.1 christos unwind section. */
3272 1.1 christos if (info->relocatable)
3273 1.1 christos return TRUE;
3274 1.1 christos
3275 1.1 christos return elf_hppa_sort_unwind (abfd);
3276 1.1 christos }
3277 1.1 christos
3278 1.1 christos /* Record the lowest address for the data and text segments. */
3279 1.1 christos
3280 1.1 christos static void
3281 1.1 christos hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3282 1.1 christos {
3283 1.1 christos struct elf32_hppa_link_hash_table *htab;
3284 1.1 christos
3285 1.1 christos htab = (struct elf32_hppa_link_hash_table*) data;
3286 1.1 christos if (htab == NULL)
3287 1.1 christos return;
3288 1.1 christos
3289 1.1 christos if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3290 1.1 christos {
3291 1.1 christos bfd_vma value;
3292 1.1 christos Elf_Internal_Phdr *p;
3293 1.1 christos
3294 1.1 christos p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3295 1.1 christos BFD_ASSERT (p != NULL);
3296 1.1 christos value = p->p_vaddr;
3297 1.1 christos
3298 1.1 christos if ((section->flags & SEC_READONLY) != 0)
3299 1.1 christos {
3300 1.1 christos if (value < htab->text_segment_base)
3301 1.1 christos htab->text_segment_base = value;
3302 1.1 christos }
3303 1.1 christos else
3304 1.1 christos {
3305 1.1 christos if (value < htab->data_segment_base)
3306 1.1 christos htab->data_segment_base = value;
3307 1.1 christos }
3308 1.1 christos }
3309 1.1 christos }
3310 1.1 christos
3311 1.1 christos /* Perform a relocation as part of a final link. */
3312 1.1 christos
3313 1.1 christos static bfd_reloc_status_type
3314 1.1 christos final_link_relocate (asection *input_section,
3315 1.1 christos bfd_byte *contents,
3316 1.1 christos const Elf_Internal_Rela *rela,
3317 1.1 christos bfd_vma value,
3318 1.1 christos struct elf32_hppa_link_hash_table *htab,
3319 1.1 christos asection *sym_sec,
3320 1.1 christos struct elf32_hppa_link_hash_entry *hh,
3321 1.1 christos struct bfd_link_info *info)
3322 1.1 christos {
3323 1.1 christos int insn;
3324 1.1 christos unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3325 1.1 christos unsigned int orig_r_type = r_type;
3326 1.1 christos reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3327 1.1 christos int r_format = howto->bitsize;
3328 1.1 christos enum hppa_reloc_field_selector_type_alt r_field;
3329 1.1 christos bfd *input_bfd = input_section->owner;
3330 1.1 christos bfd_vma offset = rela->r_offset;
3331 1.1 christos bfd_vma max_branch_offset = 0;
3332 1.1 christos bfd_byte *hit_data = contents + offset;
3333 1.1 christos bfd_signed_vma addend = rela->r_addend;
3334 1.1 christos bfd_vma location;
3335 1.1 christos struct elf32_hppa_stub_hash_entry *hsh = NULL;
3336 1.1 christos int val;
3337 1.1 christos
3338 1.1 christos if (r_type == R_PARISC_NONE)
3339 1.1 christos return bfd_reloc_ok;
3340 1.1 christos
3341 1.1 christos insn = bfd_get_32 (input_bfd, hit_data);
3342 1.1 christos
3343 1.1 christos /* Find out where we are and where we're going. */
3344 1.1 christos location = (offset +
3345 1.1 christos input_section->output_offset +
3346 1.1 christos input_section->output_section->vma);
3347 1.1 christos
3348 1.1 christos /* If we are not building a shared library, convert DLTIND relocs to
3349 1.1 christos DPREL relocs. */
3350 1.1 christos if (!info->shared)
3351 1.1 christos {
3352 1.1 christos switch (r_type)
3353 1.1 christos {
3354 1.1 christos case R_PARISC_DLTIND21L:
3355 1.1 christos r_type = R_PARISC_DPREL21L;
3356 1.1 christos break;
3357 1.1 christos
3358 1.1 christos case R_PARISC_DLTIND14R:
3359 1.1 christos r_type = R_PARISC_DPREL14R;
3360 1.1 christos break;
3361 1.1 christos
3362 1.1 christos case R_PARISC_DLTIND14F:
3363 1.1 christos r_type = R_PARISC_DPREL14F;
3364 1.1 christos break;
3365 1.1 christos }
3366 1.1 christos }
3367 1.1 christos
3368 1.1 christos switch (r_type)
3369 1.1 christos {
3370 1.1 christos case R_PARISC_PCREL12F:
3371 1.1 christos case R_PARISC_PCREL17F:
3372 1.1 christos case R_PARISC_PCREL22F:
3373 1.1 christos /* If this call should go via the plt, find the import stub in
3374 1.1 christos the stub hash. */
3375 1.1 christos if (sym_sec == NULL
3376 1.1 christos || sym_sec->output_section == NULL
3377 1.1 christos || (hh != NULL
3378 1.1 christos && hh->eh.plt.offset != (bfd_vma) -1
3379 1.1 christos && hh->eh.dynindx != -1
3380 1.1 christos && !hh->plabel
3381 1.1 christos && (info->shared
3382 1.1 christos || !hh->eh.def_regular
3383 1.1 christos || hh->eh.root.type == bfd_link_hash_defweak)))
3384 1.1 christos {
3385 1.1 christos hsh = hppa_get_stub_entry (input_section, sym_sec,
3386 1.1 christos hh, rela, htab);
3387 1.1 christos if (hsh != NULL)
3388 1.1 christos {
3389 1.1 christos value = (hsh->stub_offset
3390 1.1 christos + hsh->stub_sec->output_offset
3391 1.1 christos + hsh->stub_sec->output_section->vma);
3392 1.1 christos addend = 0;
3393 1.1 christos }
3394 1.1 christos else if (sym_sec == NULL && hh != NULL
3395 1.1 christos && hh->eh.root.type == bfd_link_hash_undefweak)
3396 1.1 christos {
3397 1.1 christos /* It's OK if undefined weak. Calls to undefined weak
3398 1.1 christos symbols behave as if the "called" function
3399 1.1 christos immediately returns. We can thus call to a weak
3400 1.1 christos function without first checking whether the function
3401 1.1 christos is defined. */
3402 1.1 christos value = location;
3403 1.1 christos addend = 8;
3404 1.1 christos }
3405 1.1 christos else
3406 1.1 christos return bfd_reloc_undefined;
3407 1.1 christos }
3408 1.1 christos /* Fall thru. */
3409 1.1 christos
3410 1.1 christos case R_PARISC_PCREL21L:
3411 1.1 christos case R_PARISC_PCREL17C:
3412 1.1 christos case R_PARISC_PCREL17R:
3413 1.1 christos case R_PARISC_PCREL14R:
3414 1.1 christos case R_PARISC_PCREL14F:
3415 1.1 christos case R_PARISC_PCREL32:
3416 1.1 christos /* Make it a pc relative offset. */
3417 1.1 christos value -= location;
3418 1.1 christos addend -= 8;
3419 1.1 christos break;
3420 1.1 christos
3421 1.1 christos case R_PARISC_DPREL21L:
3422 1.1 christos case R_PARISC_DPREL14R:
3423 1.1 christos case R_PARISC_DPREL14F:
3424 1.1 christos case R_PARISC_TLS_GD21L:
3425 1.1 christos case R_PARISC_TLS_LDM21L:
3426 1.1 christos case R_PARISC_TLS_IE21L:
3427 1.1 christos /* Convert instructions that use the linkage table pointer (r19) to
3428 1.1 christos instructions that use the global data pointer (dp). This is the
3429 1.1 christos most efficient way of using PIC code in an incomplete executable,
3430 1.1 christos but the user must follow the standard runtime conventions for
3431 1.1 christos accessing data for this to work. */
3432 1.1 christos if (orig_r_type == R_PARISC_DLTIND21L
3433 1.1 christos || (!info->shared
3434 1.1 christos && (r_type == R_PARISC_TLS_GD21L
3435 1.1 christos || r_type == R_PARISC_TLS_LDM21L
3436 1.1 christos || r_type == R_PARISC_TLS_IE21L)))
3437 1.1 christos {
3438 1.1 christos /* Convert addil instructions if the original reloc was a
3439 1.1 christos DLTIND21L. GCC sometimes uses a register other than r19 for
3440 1.1 christos the operation, so we must convert any addil instruction
3441 1.1 christos that uses this relocation. */
3442 1.1 christos if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3443 1.1 christos insn = ADDIL_DP;
3444 1.1 christos else
3445 1.1 christos /* We must have a ldil instruction. It's too hard to find
3446 1.1 christos and convert the associated add instruction, so issue an
3447 1.1 christos error. */
3448 1.1 christos (*_bfd_error_handler)
3449 1.1 christos (_("%B(%A+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"),
3450 1.1 christos input_bfd,
3451 1.1 christos input_section,
3452 1.1 christos (long) offset,
3453 1.1 christos howto->name,
3454 1.1 christos insn);
3455 1.1 christos }
3456 1.1 christos else if (orig_r_type == R_PARISC_DLTIND14F)
3457 1.1 christos {
3458 1.1 christos /* This must be a format 1 load/store. Change the base
3459 1.1 christos register to dp. */
3460 1.1 christos insn = (insn & 0xfc1ffff) | (27 << 21);
3461 1.1 christos }
3462 1.1 christos
3463 1.1 christos /* For all the DP relative relocations, we need to examine the symbol's
3464 1.1 christos section. If it has no section or if it's a code section, then
3465 1.1 christos "data pointer relative" makes no sense. In that case we don't
3466 1.1 christos adjust the "value", and for 21 bit addil instructions, we change the
3467 1.1 christos source addend register from %dp to %r0. This situation commonly
3468 1.1 christos arises for undefined weak symbols and when a variable's "constness"
3469 1.1 christos is declared differently from the way the variable is defined. For
3470 1.1 christos instance: "extern int foo" with foo defined as "const int foo". */
3471 1.1 christos if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3472 1.1 christos {
3473 1.1 christos if ((insn & ((0x3f << 26) | (0x1f << 21)))
3474 1.1 christos == (((int) OP_ADDIL << 26) | (27 << 21)))
3475 1.1 christos {
3476 1.1 christos insn &= ~ (0x1f << 21);
3477 1.1 christos }
3478 1.1 christos /* Now try to make things easy for the dynamic linker. */
3479 1.1 christos
3480 1.1 christos break;
3481 1.1 christos }
3482 1.1 christos /* Fall thru. */
3483 1.1 christos
3484 1.1 christos case R_PARISC_DLTIND21L:
3485 1.1 christos case R_PARISC_DLTIND14R:
3486 1.1 christos case R_PARISC_DLTIND14F:
3487 1.1 christos case R_PARISC_TLS_GD14R:
3488 1.1 christos case R_PARISC_TLS_LDM14R:
3489 1.1 christos case R_PARISC_TLS_IE14R:
3490 1.1 christos value -= elf_gp (input_section->output_section->owner);
3491 1.1 christos break;
3492 1.1 christos
3493 1.1 christos case R_PARISC_SEGREL32:
3494 1.1 christos if ((sym_sec->flags & SEC_CODE) != 0)
3495 1.1 christos value -= htab->text_segment_base;
3496 1.1 christos else
3497 1.1 christos value -= htab->data_segment_base;
3498 1.1 christos break;
3499 1.1 christos
3500 1.1 christos default:
3501 1.1 christos break;
3502 1.1 christos }
3503 1.1 christos
3504 1.1 christos switch (r_type)
3505 1.1 christos {
3506 1.1 christos case R_PARISC_DIR32:
3507 1.1 christos case R_PARISC_DIR14F:
3508 1.1 christos case R_PARISC_DIR17F:
3509 1.1 christos case R_PARISC_PCREL17C:
3510 1.1 christos case R_PARISC_PCREL14F:
3511 1.1 christos case R_PARISC_PCREL32:
3512 1.1 christos case R_PARISC_DPREL14F:
3513 1.1 christos case R_PARISC_PLABEL32:
3514 1.1 christos case R_PARISC_DLTIND14F:
3515 1.1 christos case R_PARISC_SEGBASE:
3516 1.1 christos case R_PARISC_SEGREL32:
3517 1.1 christos case R_PARISC_TLS_DTPMOD32:
3518 1.1 christos case R_PARISC_TLS_DTPOFF32:
3519 1.1 christos case R_PARISC_TLS_TPREL32:
3520 1.1 christos r_field = e_fsel;
3521 1.1 christos break;
3522 1.1 christos
3523 1.1 christos case R_PARISC_DLTIND21L:
3524 1.1 christos case R_PARISC_PCREL21L:
3525 1.1 christos case R_PARISC_PLABEL21L:
3526 1.1 christos r_field = e_lsel;
3527 1.1 christos break;
3528 1.1 christos
3529 1.1 christos case R_PARISC_DIR21L:
3530 1.1 christos case R_PARISC_DPREL21L:
3531 1.1 christos case R_PARISC_TLS_GD21L:
3532 1.1 christos case R_PARISC_TLS_LDM21L:
3533 1.1 christos case R_PARISC_TLS_LDO21L:
3534 1.1 christos case R_PARISC_TLS_IE21L:
3535 1.1 christos case R_PARISC_TLS_LE21L:
3536 1.1 christos r_field = e_lrsel;
3537 1.1 christos break;
3538 1.1 christos
3539 1.1 christos case R_PARISC_PCREL17R:
3540 1.1 christos case R_PARISC_PCREL14R:
3541 1.1 christos case R_PARISC_PLABEL14R:
3542 1.1 christos case R_PARISC_DLTIND14R:
3543 1.1 christos r_field = e_rsel;
3544 1.1 christos break;
3545 1.1 christos
3546 1.1 christos case R_PARISC_DIR17R:
3547 1.1 christos case R_PARISC_DIR14R:
3548 1.1 christos case R_PARISC_DPREL14R:
3549 1.1 christos case R_PARISC_TLS_GD14R:
3550 1.1 christos case R_PARISC_TLS_LDM14R:
3551 1.1 christos case R_PARISC_TLS_LDO14R:
3552 1.1 christos case R_PARISC_TLS_IE14R:
3553 1.1 christos case R_PARISC_TLS_LE14R:
3554 1.1 christos r_field = e_rrsel;
3555 1.1 christos break;
3556 1.1 christos
3557 1.1 christos case R_PARISC_PCREL12F:
3558 1.1 christos case R_PARISC_PCREL17F:
3559 1.1 christos case R_PARISC_PCREL22F:
3560 1.1 christos r_field = e_fsel;
3561 1.1 christos
3562 1.1 christos if (r_type == (unsigned int) R_PARISC_PCREL17F)
3563 1.1 christos {
3564 1.1 christos max_branch_offset = (1 << (17-1)) << 2;
3565 1.1 christos }
3566 1.1 christos else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3567 1.1 christos {
3568 1.1 christos max_branch_offset = (1 << (12-1)) << 2;
3569 1.1 christos }
3570 1.1 christos else
3571 1.1 christos {
3572 1.1 christos max_branch_offset = (1 << (22-1)) << 2;
3573 1.1 christos }
3574 1.1 christos
3575 1.1 christos /* sym_sec is NULL on undefined weak syms or when shared on
3576 1.1 christos undefined syms. We've already checked for a stub for the
3577 1.1 christos shared undefined case. */
3578 1.1 christos if (sym_sec == NULL)
3579 1.1 christos break;
3580 1.1 christos
3581 1.1 christos /* If the branch is out of reach, then redirect the
3582 1.1 christos call to the local stub for this function. */
3583 1.1 christos if (value + addend + max_branch_offset >= 2*max_branch_offset)
3584 1.1 christos {
3585 1.1 christos hsh = hppa_get_stub_entry (input_section, sym_sec,
3586 1.1 christos hh, rela, htab);
3587 1.1 christos if (hsh == NULL)
3588 1.1 christos return bfd_reloc_undefined;
3589 1.1 christos
3590 1.1 christos /* Munge up the value and addend so that we call the stub
3591 1.1 christos rather than the procedure directly. */
3592 1.1 christos value = (hsh->stub_offset
3593 1.1 christos + hsh->stub_sec->output_offset
3594 1.1 christos + hsh->stub_sec->output_section->vma
3595 1.1 christos - location);
3596 1.1 christos addend = -8;
3597 1.1 christos }
3598 1.1 christos break;
3599 1.1 christos
3600 1.1 christos /* Something we don't know how to handle. */
3601 1.1 christos default:
3602 1.1 christos return bfd_reloc_notsupported;
3603 1.1 christos }
3604 1.1 christos
3605 1.1 christos /* Make sure we can reach the stub. */
3606 1.1 christos if (max_branch_offset != 0
3607 1.1 christos && value + addend + max_branch_offset >= 2*max_branch_offset)
3608 1.1 christos {
3609 1.1 christos (*_bfd_error_handler)
3610 1.1 christos (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3611 1.1 christos input_bfd,
3612 1.1 christos input_section,
3613 1.1 christos (long) offset,
3614 1.1 christos hsh->bh_root.string);
3615 1.1 christos bfd_set_error (bfd_error_bad_value);
3616 1.1 christos return bfd_reloc_notsupported;
3617 1.1 christos }
3618 1.1 christos
3619 1.1 christos val = hppa_field_adjust (value, addend, r_field);
3620 1.1 christos
3621 1.1 christos switch (r_type)
3622 1.1 christos {
3623 1.1 christos case R_PARISC_PCREL12F:
3624 1.1 christos case R_PARISC_PCREL17C:
3625 1.1 christos case R_PARISC_PCREL17F:
3626 1.1 christos case R_PARISC_PCREL17R:
3627 1.1 christos case R_PARISC_PCREL22F:
3628 1.1 christos case R_PARISC_DIR17F:
3629 1.1 christos case R_PARISC_DIR17R:
3630 1.1 christos /* This is a branch. Divide the offset by four.
3631 1.1 christos Note that we need to decide whether it's a branch or
3632 1.1 christos otherwise by inspecting the reloc. Inspecting insn won't
3633 1.1 christos work as insn might be from a .word directive. */
3634 1.1 christos val >>= 2;
3635 1.1 christos break;
3636 1.1 christos
3637 1.1 christos default:
3638 1.1 christos break;
3639 1.1 christos }
3640 1.1 christos
3641 1.1 christos insn = hppa_rebuild_insn (insn, val, r_format);
3642 1.1 christos
3643 1.1 christos /* Update the instruction word. */
3644 1.1 christos bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3645 1.1 christos return bfd_reloc_ok;
3646 1.1 christos }
3647 1.1 christos
3648 1.1 christos /* Relocate an HPPA ELF section. */
3649 1.1 christos
3650 1.1 christos static bfd_boolean
3651 1.1 christos elf32_hppa_relocate_section (bfd *output_bfd,
3652 1.1 christos struct bfd_link_info *info,
3653 1.1 christos bfd *input_bfd,
3654 1.1 christos asection *input_section,
3655 1.1 christos bfd_byte *contents,
3656 1.1 christos Elf_Internal_Rela *relocs,
3657 1.1 christos Elf_Internal_Sym *local_syms,
3658 1.1 christos asection **local_sections)
3659 1.1 christos {
3660 1.1 christos bfd_vma *local_got_offsets;
3661 1.1 christos struct elf32_hppa_link_hash_table *htab;
3662 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3663 1.1 christos Elf_Internal_Rela *rela;
3664 1.1 christos Elf_Internal_Rela *relend;
3665 1.1 christos
3666 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3667 1.1 christos
3668 1.1 christos htab = hppa_link_hash_table (info);
3669 1.1 christos if (htab == NULL)
3670 1.1 christos return FALSE;
3671 1.1 christos
3672 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
3673 1.1 christos
3674 1.1 christos rela = relocs;
3675 1.1 christos relend = relocs + input_section->reloc_count;
3676 1.1 christos for (; rela < relend; rela++)
3677 1.1 christos {
3678 1.1 christos unsigned int r_type;
3679 1.1 christos reloc_howto_type *howto;
3680 1.1 christos unsigned int r_symndx;
3681 1.1 christos struct elf32_hppa_link_hash_entry *hh;
3682 1.1 christos Elf_Internal_Sym *sym;
3683 1.1 christos asection *sym_sec;
3684 1.1 christos bfd_vma relocation;
3685 1.1 christos bfd_reloc_status_type rstatus;
3686 1.1 christos const char *sym_name;
3687 1.1 christos bfd_boolean plabel;
3688 1.1 christos bfd_boolean warned_undef;
3689 1.1 christos
3690 1.1 christos r_type = ELF32_R_TYPE (rela->r_info);
3691 1.1 christos if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3692 1.1 christos {
3693 1.1 christos bfd_set_error (bfd_error_bad_value);
3694 1.1 christos return FALSE;
3695 1.1 christos }
3696 1.1 christos if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3697 1.1 christos || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3698 1.1 christos continue;
3699 1.1 christos
3700 1.1 christos r_symndx = ELF32_R_SYM (rela->r_info);
3701 1.1 christos hh = NULL;
3702 1.1 christos sym = NULL;
3703 1.1 christos sym_sec = NULL;
3704 1.1 christos warned_undef = FALSE;
3705 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3706 1.1 christos {
3707 1.1 christos /* This is a local symbol, h defaults to NULL. */
3708 1.1 christos sym = local_syms + r_symndx;
3709 1.1 christos sym_sec = local_sections[r_symndx];
3710 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3711 1.1 christos }
3712 1.1 christos else
3713 1.1 christos {
3714 1.1 christos struct elf_link_hash_entry *eh;
3715 1.1 christos bfd_boolean unresolved_reloc;
3716 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3717 1.1 christos
3718 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3719 1.1 christos r_symndx, symtab_hdr, sym_hashes,
3720 1.1 christos eh, sym_sec, relocation,
3721 1.1 christos unresolved_reloc, warned_undef);
3722 1.1 christos
3723 1.1 christos if (!info->relocatable
3724 1.1 christos && relocation == 0
3725 1.1 christos && eh->root.type != bfd_link_hash_defined
3726 1.1 christos && eh->root.type != bfd_link_hash_defweak
3727 1.1 christos && eh->root.type != bfd_link_hash_undefweak)
3728 1.1 christos {
3729 1.1 christos if (info->unresolved_syms_in_objects == RM_IGNORE
3730 1.1 christos && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3731 1.1 christos && eh->type == STT_PARISC_MILLI)
3732 1.1 christos {
3733 1.1 christos if (! info->callbacks->undefined_symbol
3734 1.1 christos (info, eh_name (eh), input_bfd,
3735 1.1 christos input_section, rela->r_offset, FALSE))
3736 1.1 christos return FALSE;
3737 1.1 christos warned_undef = TRUE;
3738 1.1 christos }
3739 1.1 christos }
3740 1.1 christos hh = hppa_elf_hash_entry (eh);
3741 1.1 christos }
3742 1.1 christos
3743 1.1 christos if (sym_sec != NULL && elf_discarded_section (sym_sec))
3744 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3745 1.1 christos rela, relend,
3746 1.1 christos elf_hppa_howto_table + r_type,
3747 1.1 christos contents);
3748 1.1 christos
3749 1.1 christos if (info->relocatable)
3750 1.1 christos continue;
3751 1.1 christos
3752 1.1 christos /* Do any required modifications to the relocation value, and
3753 1.1 christos determine what types of dynamic info we need to output, if
3754 1.1 christos any. */
3755 1.1 christos plabel = 0;
3756 1.1 christos switch (r_type)
3757 1.1 christos {
3758 1.1 christos case R_PARISC_DLTIND14F:
3759 1.1 christos case R_PARISC_DLTIND14R:
3760 1.1 christos case R_PARISC_DLTIND21L:
3761 1.1 christos {
3762 1.1 christos bfd_vma off;
3763 1.1 christos bfd_boolean do_got = 0;
3764 1.1 christos
3765 1.1 christos /* Relocation is to the entry for this symbol in the
3766 1.1 christos global offset table. */
3767 1.1 christos if (hh != NULL)
3768 1.1 christos {
3769 1.1 christos bfd_boolean dyn;
3770 1.1 christos
3771 1.1 christos off = hh->eh.got.offset;
3772 1.1 christos dyn = htab->etab.dynamic_sections_created;
3773 1.1 christos if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
3774 1.1 christos &hh->eh))
3775 1.1 christos {
3776 1.1 christos /* If we aren't going to call finish_dynamic_symbol,
3777 1.1 christos then we need to handle initialisation of the .got
3778 1.1 christos entry and create needed relocs here. Since the
3779 1.1 christos offset must always be a multiple of 4, we use the
3780 1.1 christos least significant bit to record whether we have
3781 1.1 christos initialised it already. */
3782 1.1 christos if ((off & 1) != 0)
3783 1.1 christos off &= ~1;
3784 1.1 christos else
3785 1.1 christos {
3786 1.1 christos hh->eh.got.offset |= 1;
3787 1.1 christos do_got = 1;
3788 1.1 christos }
3789 1.1 christos }
3790 1.1 christos }
3791 1.1 christos else
3792 1.1 christos {
3793 1.1 christos /* Local symbol case. */
3794 1.1 christos if (local_got_offsets == NULL)
3795 1.1 christos abort ();
3796 1.1 christos
3797 1.1 christos off = local_got_offsets[r_symndx];
3798 1.1 christos
3799 1.1 christos /* The offset must always be a multiple of 4. We use
3800 1.1 christos the least significant bit to record whether we have
3801 1.1 christos already generated the necessary reloc. */
3802 1.1 christos if ((off & 1) != 0)
3803 1.1 christos off &= ~1;
3804 1.1 christos else
3805 1.1 christos {
3806 1.1 christos local_got_offsets[r_symndx] |= 1;
3807 1.1 christos do_got = 1;
3808 1.1 christos }
3809 1.1 christos }
3810 1.1 christos
3811 1.1 christos if (do_got)
3812 1.1 christos {
3813 1.1 christos if (info->shared)
3814 1.1 christos {
3815 1.1 christos /* Output a dynamic relocation for this GOT entry.
3816 1.1 christos In this case it is relative to the base of the
3817 1.1 christos object because the symbol index is zero. */
3818 1.1 christos Elf_Internal_Rela outrel;
3819 1.1 christos bfd_byte *loc;
3820 1.1 christos asection *sec = htab->srelgot;
3821 1.1 christos
3822 1.1 christos outrel.r_offset = (off
3823 1.1 christos + htab->sgot->output_offset
3824 1.1 christos + htab->sgot->output_section->vma);
3825 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3826 1.1 christos outrel.r_addend = relocation;
3827 1.1 christos loc = sec->contents;
3828 1.1 christos loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3829 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3830 1.1 christos }
3831 1.1 christos else
3832 1.1 christos bfd_put_32 (output_bfd, relocation,
3833 1.1 christos htab->sgot->contents + off);
3834 1.1 christos }
3835 1.1 christos
3836 1.1 christos if (off >= (bfd_vma) -2)
3837 1.1 christos abort ();
3838 1.1 christos
3839 1.1 christos /* Add the base of the GOT to the relocation value. */
3840 1.1 christos relocation = (off
3841 1.1 christos + htab->sgot->output_offset
3842 1.1 christos + htab->sgot->output_section->vma);
3843 1.1 christos }
3844 1.1 christos break;
3845 1.1 christos
3846 1.1 christos case R_PARISC_SEGREL32:
3847 1.1 christos /* If this is the first SEGREL relocation, then initialize
3848 1.1 christos the segment base values. */
3849 1.1 christos if (htab->text_segment_base == (bfd_vma) -1)
3850 1.1 christos bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3851 1.1 christos break;
3852 1.1 christos
3853 1.1 christos case R_PARISC_PLABEL14R:
3854 1.1 christos case R_PARISC_PLABEL21L:
3855 1.1 christos case R_PARISC_PLABEL32:
3856 1.1 christos if (htab->etab.dynamic_sections_created)
3857 1.1 christos {
3858 1.1 christos bfd_vma off;
3859 1.1 christos bfd_boolean do_plt = 0;
3860 1.1 christos /* If we have a global symbol with a PLT slot, then
3861 1.1 christos redirect this relocation to it. */
3862 1.1 christos if (hh != NULL)
3863 1.1 christos {
3864 1.1 christos off = hh->eh.plt.offset;
3865 1.1 christos if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared,
3866 1.1 christos &hh->eh))
3867 1.1 christos {
3868 1.1 christos /* In a non-shared link, adjust_dynamic_symbols
3869 1.1 christos isn't called for symbols forced local. We
3870 1.1 christos need to write out the plt entry here. */
3871 1.1 christos if ((off & 1) != 0)
3872 1.1 christos off &= ~1;
3873 1.1 christos else
3874 1.1 christos {
3875 1.1 christos hh->eh.plt.offset |= 1;
3876 1.1 christos do_plt = 1;
3877 1.1 christos }
3878 1.1 christos }
3879 1.1 christos }
3880 1.1 christos else
3881 1.1 christos {
3882 1.1 christos bfd_vma *local_plt_offsets;
3883 1.1 christos
3884 1.1 christos if (local_got_offsets == NULL)
3885 1.1 christos abort ();
3886 1.1 christos
3887 1.1 christos local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3888 1.1 christos off = local_plt_offsets[r_symndx];
3889 1.1 christos
3890 1.1 christos /* As for the local .got entry case, we use the last
3891 1.1 christos bit to record whether we've already initialised
3892 1.1 christos this local .plt entry. */
3893 1.1 christos if ((off & 1) != 0)
3894 1.1 christos off &= ~1;
3895 1.1 christos else
3896 1.1 christos {
3897 1.1 christos local_plt_offsets[r_symndx] |= 1;
3898 1.1 christos do_plt = 1;
3899 1.1 christos }
3900 1.1 christos }
3901 1.1 christos
3902 1.1 christos if (do_plt)
3903 1.1 christos {
3904 1.1 christos if (info->shared)
3905 1.1 christos {
3906 1.1 christos /* Output a dynamic IPLT relocation for this
3907 1.1 christos PLT entry. */
3908 1.1 christos Elf_Internal_Rela outrel;
3909 1.1 christos bfd_byte *loc;
3910 1.1 christos asection *s = htab->srelplt;
3911 1.1 christos
3912 1.1 christos outrel.r_offset = (off
3913 1.1 christos + htab->splt->output_offset
3914 1.1 christos + htab->splt->output_section->vma);
3915 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3916 1.1 christos outrel.r_addend = relocation;
3917 1.1 christos loc = s->contents;
3918 1.1 christos loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3919 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3920 1.1 christos }
3921 1.1 christos else
3922 1.1 christos {
3923 1.1 christos bfd_put_32 (output_bfd,
3924 1.1 christos relocation,
3925 1.1 christos htab->splt->contents + off);
3926 1.1 christos bfd_put_32 (output_bfd,
3927 1.1 christos elf_gp (htab->splt->output_section->owner),
3928 1.1 christos htab->splt->contents + off + 4);
3929 1.1 christos }
3930 1.1 christos }
3931 1.1 christos
3932 1.1 christos if (off >= (bfd_vma) -2)
3933 1.1 christos abort ();
3934 1.1 christos
3935 1.1 christos /* PLABELs contain function pointers. Relocation is to
3936 1.1 christos the entry for the function in the .plt. The magic +2
3937 1.1 christos offset signals to $$dyncall that the function pointer
3938 1.1 christos is in the .plt and thus has a gp pointer too.
3939 1.1 christos Exception: Undefined PLABELs should have a value of
3940 1.1 christos zero. */
3941 1.1 christos if (hh == NULL
3942 1.1 christos || (hh->eh.root.type != bfd_link_hash_undefweak
3943 1.1 christos && hh->eh.root.type != bfd_link_hash_undefined))
3944 1.1 christos {
3945 1.1 christos relocation = (off
3946 1.1 christos + htab->splt->output_offset
3947 1.1 christos + htab->splt->output_section->vma
3948 1.1 christos + 2);
3949 1.1 christos }
3950 1.1 christos plabel = 1;
3951 1.1 christos }
3952 1.1 christos /* Fall through and possibly emit a dynamic relocation. */
3953 1.1 christos
3954 1.1 christos case R_PARISC_DIR17F:
3955 1.1 christos case R_PARISC_DIR17R:
3956 1.1 christos case R_PARISC_DIR14F:
3957 1.1 christos case R_PARISC_DIR14R:
3958 1.1 christos case R_PARISC_DIR21L:
3959 1.1 christos case R_PARISC_DPREL14F:
3960 1.1 christos case R_PARISC_DPREL14R:
3961 1.1 christos case R_PARISC_DPREL21L:
3962 1.1 christos case R_PARISC_DIR32:
3963 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0)
3964 1.1 christos break;
3965 1.1 christos
3966 1.1 christos /* The reloc types handled here and this conditional
3967 1.1 christos expression must match the code in ..check_relocs and
3968 1.1 christos allocate_dynrelocs. ie. We need exactly the same condition
3969 1.1 christos as in ..check_relocs, with some extra conditions (dynindx
3970 1.1 christos test in this case) to cater for relocs removed by
3971 1.1 christos allocate_dynrelocs. If you squint, the non-shared test
3972 1.1 christos here does indeed match the one in ..check_relocs, the
3973 1.1 christos difference being that here we test DEF_DYNAMIC as well as
3974 1.1 christos !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3975 1.1 christos which is why we can't use just that test here.
3976 1.1 christos Conversely, DEF_DYNAMIC can't be used in check_relocs as
3977 1.1 christos there all files have not been loaded. */
3978 1.1 christos if ((info->shared
3979 1.1 christos && (hh == NULL
3980 1.1 christos || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3981 1.1 christos || hh->eh.root.type != bfd_link_hash_undefweak)
3982 1.1 christos && (IS_ABSOLUTE_RELOC (r_type)
3983 1.1 christos || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3984 1.1 christos || (!info->shared
3985 1.1 christos && hh != NULL
3986 1.1 christos && hh->eh.dynindx != -1
3987 1.1 christos && !hh->eh.non_got_ref
3988 1.1 christos && ((ELIMINATE_COPY_RELOCS
3989 1.1 christos && hh->eh.def_dynamic
3990 1.1 christos && !hh->eh.def_regular)
3991 1.1 christos || hh->eh.root.type == bfd_link_hash_undefweak
3992 1.1 christos || hh->eh.root.type == bfd_link_hash_undefined)))
3993 1.1 christos {
3994 1.1 christos Elf_Internal_Rela outrel;
3995 1.1 christos bfd_boolean skip;
3996 1.1 christos asection *sreloc;
3997 1.1 christos bfd_byte *loc;
3998 1.1 christos
3999 1.1 christos /* When generating a shared object, these relocations
4000 1.1 christos are copied into the output file to be resolved at run
4001 1.1 christos time. */
4002 1.1 christos
4003 1.1 christos outrel.r_addend = rela->r_addend;
4004 1.1 christos outrel.r_offset =
4005 1.1 christos _bfd_elf_section_offset (output_bfd, info, input_section,
4006 1.1 christos rela->r_offset);
4007 1.1 christos skip = (outrel.r_offset == (bfd_vma) -1
4008 1.1 christos || outrel.r_offset == (bfd_vma) -2);
4009 1.1 christos outrel.r_offset += (input_section->output_offset
4010 1.1 christos + input_section->output_section->vma);
4011 1.1 christos
4012 1.1 christos if (skip)
4013 1.1 christos {
4014 1.1 christos memset (&outrel, 0, sizeof (outrel));
4015 1.1 christos }
4016 1.1 christos else if (hh != NULL
4017 1.1 christos && hh->eh.dynindx != -1
4018 1.1 christos && (plabel
4019 1.1 christos || !IS_ABSOLUTE_RELOC (r_type)
4020 1.1 christos || !info->shared
4021 1.1 christos || !info->symbolic
4022 1.1 christos || !hh->eh.def_regular))
4023 1.1 christos {
4024 1.1 christos outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
4025 1.1 christos }
4026 1.1 christos else /* It's a local symbol, or one marked to become local. */
4027 1.1 christos {
4028 1.1 christos int indx = 0;
4029 1.1 christos
4030 1.1 christos /* Add the absolute offset of the symbol. */
4031 1.1 christos outrel.r_addend += relocation;
4032 1.1 christos
4033 1.1 christos /* Global plabels need to be processed by the
4034 1.1 christos dynamic linker so that functions have at most one
4035 1.1 christos fptr. For this reason, we need to differentiate
4036 1.1 christos between global and local plabels, which we do by
4037 1.1 christos providing the function symbol for a global plabel
4038 1.1 christos reloc, and no symbol for local plabels. */
4039 1.1 christos if (! plabel
4040 1.1 christos && sym_sec != NULL
4041 1.1 christos && sym_sec->output_section != NULL
4042 1.1 christos && ! bfd_is_abs_section (sym_sec))
4043 1.1 christos {
4044 1.1 christos asection *osec;
4045 1.1 christos
4046 1.1 christos osec = sym_sec->output_section;
4047 1.1 christos indx = elf_section_data (osec)->dynindx;
4048 1.1 christos if (indx == 0)
4049 1.1 christos {
4050 1.1 christos osec = htab->etab.text_index_section;
4051 1.1 christos indx = elf_section_data (osec)->dynindx;
4052 1.1 christos }
4053 1.1 christos BFD_ASSERT (indx != 0);
4054 1.1 christos
4055 1.1 christos /* We are turning this relocation into one
4056 1.1 christos against a section symbol, so subtract out the
4057 1.1 christos output section's address but not the offset
4058 1.1 christos of the input section in the output section. */
4059 1.1 christos outrel.r_addend -= osec->vma;
4060 1.1 christos }
4061 1.1 christos
4062 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
4063 1.1 christos }
4064 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
4065 1.1 christos if (sreloc == NULL)
4066 1.1 christos abort ();
4067 1.1 christos
4068 1.1 christos loc = sreloc->contents;
4069 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4070 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4071 1.1 christos }
4072 1.1 christos break;
4073 1.1 christos
4074 1.1 christos case R_PARISC_TLS_LDM21L:
4075 1.1 christos case R_PARISC_TLS_LDM14R:
4076 1.1 christos {
4077 1.1 christos bfd_vma off;
4078 1.1 christos
4079 1.1 christos off = htab->tls_ldm_got.offset;
4080 1.1 christos if (off & 1)
4081 1.1 christos off &= ~1;
4082 1.1 christos else
4083 1.1 christos {
4084 1.1 christos Elf_Internal_Rela outrel;
4085 1.1 christos bfd_byte *loc;
4086 1.1 christos
4087 1.1 christos outrel.r_offset = (off
4088 1.1 christos + htab->sgot->output_section->vma
4089 1.1 christos + htab->sgot->output_offset);
4090 1.1 christos outrel.r_addend = 0;
4091 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4092 1.1 christos loc = htab->srelgot->contents;
4093 1.1 christos loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4094 1.1 christos
4095 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4096 1.1 christos htab->tls_ldm_got.offset |= 1;
4097 1.1 christos }
4098 1.1 christos
4099 1.1 christos /* Add the base of the GOT to the relocation value. */
4100 1.1 christos relocation = (off
4101 1.1 christos + htab->sgot->output_offset
4102 1.1 christos + htab->sgot->output_section->vma);
4103 1.1 christos
4104 1.1 christos break;
4105 1.1 christos }
4106 1.1 christos
4107 1.1 christos case R_PARISC_TLS_LDO21L:
4108 1.1 christos case R_PARISC_TLS_LDO14R:
4109 1.1 christos relocation -= dtpoff_base (info);
4110 1.1 christos break;
4111 1.1 christos
4112 1.1 christos case R_PARISC_TLS_GD21L:
4113 1.1 christos case R_PARISC_TLS_GD14R:
4114 1.1 christos case R_PARISC_TLS_IE21L:
4115 1.1 christos case R_PARISC_TLS_IE14R:
4116 1.1 christos {
4117 1.1 christos bfd_vma off;
4118 1.1 christos int indx;
4119 1.1 christos char tls_type;
4120 1.1 christos
4121 1.1 christos indx = 0;
4122 1.1 christos if (hh != NULL)
4123 1.1 christos {
4124 1.1 christos bfd_boolean dyn;
4125 1.1 christos dyn = htab->etab.dynamic_sections_created;
4126 1.1 christos
4127 1.1 christos if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &hh->eh)
4128 1.1 christos && (!info->shared
4129 1.1 christos || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4130 1.1 christos {
4131 1.1 christos indx = hh->eh.dynindx;
4132 1.1 christos }
4133 1.1 christos off = hh->eh.got.offset;
4134 1.1 christos tls_type = hh->tls_type;
4135 1.1 christos }
4136 1.1 christos else
4137 1.1 christos {
4138 1.1 christos off = local_got_offsets[r_symndx];
4139 1.1 christos tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4140 1.1 christos }
4141 1.1 christos
4142 1.1 christos if (tls_type == GOT_UNKNOWN)
4143 1.1 christos abort ();
4144 1.1 christos
4145 1.1 christos if ((off & 1) != 0)
4146 1.1 christos off &= ~1;
4147 1.1 christos else
4148 1.1 christos {
4149 1.1 christos bfd_boolean need_relocs = FALSE;
4150 1.1 christos Elf_Internal_Rela outrel;
4151 1.1 christos bfd_byte *loc = NULL;
4152 1.1 christos int cur_off = off;
4153 1.1 christos
4154 1.1 christos /* The GOT entries have not been initialized yet. Do it
4155 1.1 christos now, and emit any relocations. If both an IE GOT and a
4156 1.1 christos GD GOT are necessary, we emit the GD first. */
4157 1.1 christos
4158 1.1 christos if ((info->shared || indx != 0)
4159 1.1 christos && (hh == NULL
4160 1.1 christos || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4161 1.1 christos || hh->eh.root.type != bfd_link_hash_undefweak))
4162 1.1 christos {
4163 1.1 christos need_relocs = TRUE;
4164 1.1 christos loc = htab->srelgot->contents;
4165 1.1 christos /* FIXME (CAO): Should this be reloc_count++ ? */
4166 1.1 christos loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
4167 1.1 christos }
4168 1.1 christos
4169 1.1 christos if (tls_type & GOT_TLS_GD)
4170 1.1 christos {
4171 1.1 christos if (need_relocs)
4172 1.1 christos {
4173 1.1 christos outrel.r_offset = (cur_off
4174 1.1 christos + htab->sgot->output_section->vma
4175 1.1 christos + htab->sgot->output_offset);
4176 1.1 christos outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4177 1.1 christos outrel.r_addend = 0;
4178 1.1 christos bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
4179 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4180 1.1 christos htab->srelgot->reloc_count++;
4181 1.1 christos loc += sizeof (Elf32_External_Rela);
4182 1.1 christos
4183 1.1 christos if (indx == 0)
4184 1.1 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4185 1.1 christos htab->sgot->contents + cur_off + 4);
4186 1.1 christos else
4187 1.1 christos {
4188 1.1 christos bfd_put_32 (output_bfd, 0,
4189 1.1 christos htab->sgot->contents + cur_off + 4);
4190 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4191 1.1 christos outrel.r_offset += 4;
4192 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4193 1.1 christos htab->srelgot->reloc_count++;
4194 1.1 christos loc += sizeof (Elf32_External_Rela);
4195 1.1 christos }
4196 1.1 christos }
4197 1.1 christos else
4198 1.1 christos {
4199 1.1 christos /* If we are not emitting relocations for a
4200 1.1 christos general dynamic reference, then we must be in a
4201 1.1 christos static link or an executable link with the
4202 1.1 christos symbol binding locally. Mark it as belonging
4203 1.1 christos to module 1, the executable. */
4204 1.1 christos bfd_put_32 (output_bfd, 1,
4205 1.1 christos htab->sgot->contents + cur_off);
4206 1.1 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4207 1.1 christos htab->sgot->contents + cur_off + 4);
4208 1.1 christos }
4209 1.1 christos
4210 1.1 christos
4211 1.1 christos cur_off += 8;
4212 1.1 christos }
4213 1.1 christos
4214 1.1 christos if (tls_type & GOT_TLS_IE)
4215 1.1 christos {
4216 1.1 christos if (need_relocs)
4217 1.1 christos {
4218 1.1 christos outrel.r_offset = (cur_off
4219 1.1 christos + htab->sgot->output_section->vma
4220 1.1 christos + htab->sgot->output_offset);
4221 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4222 1.1 christos
4223 1.1 christos if (indx == 0)
4224 1.1 christos outrel.r_addend = relocation - dtpoff_base (info);
4225 1.1 christos else
4226 1.1 christos outrel.r_addend = 0;
4227 1.1 christos
4228 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4229 1.1 christos htab->srelgot->reloc_count++;
4230 1.1 christos loc += sizeof (Elf32_External_Rela);
4231 1.1 christos }
4232 1.1 christos else
4233 1.1 christos bfd_put_32 (output_bfd, tpoff (info, relocation),
4234 1.1 christos htab->sgot->contents + cur_off);
4235 1.1 christos
4236 1.1 christos cur_off += 4;
4237 1.1 christos }
4238 1.1 christos
4239 1.1 christos if (hh != NULL)
4240 1.1 christos hh->eh.got.offset |= 1;
4241 1.1 christos else
4242 1.1 christos local_got_offsets[r_symndx] |= 1;
4243 1.1 christos }
4244 1.1 christos
4245 1.1 christos if ((tls_type & GOT_TLS_GD)
4246 1.1 christos && r_type != R_PARISC_TLS_GD21L
4247 1.1 christos && r_type != R_PARISC_TLS_GD14R)
4248 1.1 christos off += 2 * GOT_ENTRY_SIZE;
4249 1.1 christos
4250 1.1 christos /* Add the base of the GOT to the relocation value. */
4251 1.1 christos relocation = (off
4252 1.1 christos + htab->sgot->output_offset
4253 1.1 christos + htab->sgot->output_section->vma);
4254 1.1 christos
4255 1.1 christos break;
4256 1.1 christos }
4257 1.1 christos
4258 1.1 christos case R_PARISC_TLS_LE21L:
4259 1.1 christos case R_PARISC_TLS_LE14R:
4260 1.1 christos {
4261 1.1 christos relocation = tpoff (info, relocation);
4262 1.1 christos break;
4263 1.1 christos }
4264 1.1 christos break;
4265 1.1 christos
4266 1.1 christos default:
4267 1.1 christos break;
4268 1.1 christos }
4269 1.1 christos
4270 1.1 christos rstatus = final_link_relocate (input_section, contents, rela, relocation,
4271 1.1 christos htab, sym_sec, hh, info);
4272 1.1 christos
4273 1.1 christos if (rstatus == bfd_reloc_ok)
4274 1.1 christos continue;
4275 1.1 christos
4276 1.1 christos if (hh != NULL)
4277 1.1 christos sym_name = hh_name (hh);
4278 1.1 christos else
4279 1.1 christos {
4280 1.1 christos sym_name = bfd_elf_string_from_elf_section (input_bfd,
4281 1.1 christos symtab_hdr->sh_link,
4282 1.1 christos sym->st_name);
4283 1.1 christos if (sym_name == NULL)
4284 1.1 christos return FALSE;
4285 1.1 christos if (*sym_name == '\0')
4286 1.1 christos sym_name = bfd_section_name (input_bfd, sym_sec);
4287 1.1 christos }
4288 1.1 christos
4289 1.1 christos howto = elf_hppa_howto_table + r_type;
4290 1.1 christos
4291 1.1 christos if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4292 1.1 christos {
4293 1.1 christos if (rstatus == bfd_reloc_notsupported || !warned_undef)
4294 1.1 christos {
4295 1.1 christos (*_bfd_error_handler)
4296 1.1 christos (_("%B(%A+0x%lx): cannot handle %s for %s"),
4297 1.1 christos input_bfd,
4298 1.1 christos input_section,
4299 1.1 christos (long) rela->r_offset,
4300 1.1 christos howto->name,
4301 1.1 christos sym_name);
4302 1.1 christos bfd_set_error (bfd_error_bad_value);
4303 1.1 christos return FALSE;
4304 1.1 christos }
4305 1.1 christos }
4306 1.1 christos else
4307 1.1 christos {
4308 1.1 christos if (!((*info->callbacks->reloc_overflow)
4309 1.1 christos (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4310 1.1 christos (bfd_vma) 0, input_bfd, input_section, rela->r_offset)))
4311 1.1 christos return FALSE;
4312 1.1 christos }
4313 1.1 christos }
4314 1.1 christos
4315 1.1 christos return TRUE;
4316 1.1 christos }
4317 1.1 christos
4318 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
4319 1.1 christos dynamic sections here. */
4320 1.1 christos
4321 1.1 christos static bfd_boolean
4322 1.1 christos elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4323 1.1 christos struct bfd_link_info *info,
4324 1.1 christos struct elf_link_hash_entry *eh,
4325 1.1 christos Elf_Internal_Sym *sym)
4326 1.1 christos {
4327 1.1 christos struct elf32_hppa_link_hash_table *htab;
4328 1.1 christos Elf_Internal_Rela rela;
4329 1.1 christos bfd_byte *loc;
4330 1.1 christos
4331 1.1 christos htab = hppa_link_hash_table (info);
4332 1.1 christos if (htab == NULL)
4333 1.1 christos return FALSE;
4334 1.1 christos
4335 1.1 christos if (eh->plt.offset != (bfd_vma) -1)
4336 1.1 christos {
4337 1.1 christos bfd_vma value;
4338 1.1 christos
4339 1.1 christos if (eh->plt.offset & 1)
4340 1.1 christos abort ();
4341 1.1 christos
4342 1.1 christos /* This symbol has an entry in the procedure linkage table. Set
4343 1.1 christos it up.
4344 1.1 christos
4345 1.1 christos The format of a plt entry is
4346 1.1 christos <funcaddr>
4347 1.1 christos <__gp>
4348 1.1 christos */
4349 1.1 christos value = 0;
4350 1.1 christos if (eh->root.type == bfd_link_hash_defined
4351 1.1 christos || eh->root.type == bfd_link_hash_defweak)
4352 1.1 christos {
4353 1.1 christos value = eh->root.u.def.value;
4354 1.1 christos if (eh->root.u.def.section->output_section != NULL)
4355 1.1 christos value += (eh->root.u.def.section->output_offset
4356 1.1 christos + eh->root.u.def.section->output_section->vma);
4357 1.1 christos }
4358 1.1 christos
4359 1.1 christos /* Create a dynamic IPLT relocation for this entry. */
4360 1.1 christos rela.r_offset = (eh->plt.offset
4361 1.1 christos + htab->splt->output_offset
4362 1.1 christos + htab->splt->output_section->vma);
4363 1.1 christos if (eh->dynindx != -1)
4364 1.1 christos {
4365 1.1 christos rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4366 1.1 christos rela.r_addend = 0;
4367 1.1 christos }
4368 1.1 christos else
4369 1.1 christos {
4370 1.1 christos /* This symbol has been marked to become local, and is
4371 1.1 christos used by a plabel so must be kept in the .plt. */
4372 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4373 1.1 christos rela.r_addend = value;
4374 1.1 christos }
4375 1.1 christos
4376 1.1 christos loc = htab->srelplt->contents;
4377 1.1 christos loc += htab->srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4378 1.1 christos bfd_elf32_swap_reloca_out (htab->splt->output_section->owner, &rela, loc);
4379 1.1 christos
4380 1.1 christos if (!eh->def_regular)
4381 1.1 christos {
4382 1.1 christos /* Mark the symbol as undefined, rather than as defined in
4383 1.1 christos the .plt section. Leave the value alone. */
4384 1.1 christos sym->st_shndx = SHN_UNDEF;
4385 1.1 christos }
4386 1.1 christos }
4387 1.1 christos
4388 1.1 christos if (eh->got.offset != (bfd_vma) -1
4389 1.1 christos && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4390 1.1 christos && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4391 1.1 christos {
4392 1.1 christos /* This symbol has an entry in the global offset table. Set it
4393 1.1 christos up. */
4394 1.1 christos
4395 1.1 christos rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4396 1.1 christos + htab->sgot->output_offset
4397 1.1 christos + htab->sgot->output_section->vma);
4398 1.1 christos
4399 1.1 christos /* If this is a -Bsymbolic link and the symbol is defined
4400 1.1 christos locally or was forced to be local because of a version file,
4401 1.1 christos we just want to emit a RELATIVE reloc. The entry in the
4402 1.1 christos global offset table will already have been initialized in the
4403 1.1 christos relocate_section function. */
4404 1.1 christos if (info->shared
4405 1.1 christos && (info->symbolic || eh->dynindx == -1)
4406 1.1 christos && eh->def_regular)
4407 1.1 christos {
4408 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4409 1.1 christos rela.r_addend = (eh->root.u.def.value
4410 1.1 christos + eh->root.u.def.section->output_offset
4411 1.1 christos + eh->root.u.def.section->output_section->vma);
4412 1.1 christos }
4413 1.1 christos else
4414 1.1 christos {
4415 1.1 christos if ((eh->got.offset & 1) != 0)
4416 1.1 christos abort ();
4417 1.1 christos
4418 1.1 christos bfd_put_32 (output_bfd, 0, htab->sgot->contents + (eh->got.offset & ~1));
4419 1.1 christos rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4420 1.1 christos rela.r_addend = 0;
4421 1.1 christos }
4422 1.1 christos
4423 1.1 christos loc = htab->srelgot->contents;
4424 1.1 christos loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4425 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4426 1.1 christos }
4427 1.1 christos
4428 1.1 christos if (eh->needs_copy)
4429 1.1 christos {
4430 1.1 christos asection *sec;
4431 1.1 christos
4432 1.1 christos /* This symbol needs a copy reloc. Set it up. */
4433 1.1 christos
4434 1.1 christos if (! (eh->dynindx != -1
4435 1.1 christos && (eh->root.type == bfd_link_hash_defined
4436 1.1 christos || eh->root.type == bfd_link_hash_defweak)))
4437 1.1 christos abort ();
4438 1.1 christos
4439 1.1 christos sec = htab->srelbss;
4440 1.1 christos
4441 1.1 christos rela.r_offset = (eh->root.u.def.value
4442 1.1 christos + eh->root.u.def.section->output_offset
4443 1.1 christos + eh->root.u.def.section->output_section->vma);
4444 1.1 christos rela.r_addend = 0;
4445 1.1 christos rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4446 1.1 christos loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4447 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4448 1.1 christos }
4449 1.1 christos
4450 1.1 christos /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4451 1.1 christos if (eh_name (eh)[0] == '_'
4452 1.1 christos && (strcmp (eh_name (eh), "_DYNAMIC") == 0
4453 1.1 christos || eh == htab->etab.hgot))
4454 1.1 christos {
4455 1.1 christos sym->st_shndx = SHN_ABS;
4456 1.1 christos }
4457 1.1 christos
4458 1.1 christos return TRUE;
4459 1.1 christos }
4460 1.1 christos
4461 1.1 christos /* Used to decide how to sort relocs in an optimal manner for the
4462 1.1 christos dynamic linker, before writing them out. */
4463 1.1 christos
4464 1.1 christos static enum elf_reloc_type_class
4465 1.1 christos elf32_hppa_reloc_type_class (const Elf_Internal_Rela *rela)
4466 1.1 christos {
4467 1.1 christos /* Handle TLS relocs first; we don't want them to be marked
4468 1.1 christos relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4469 1.1 christos check below. */
4470 1.1 christos switch ((int) ELF32_R_TYPE (rela->r_info))
4471 1.1 christos {
4472 1.1 christos case R_PARISC_TLS_DTPMOD32:
4473 1.1 christos case R_PARISC_TLS_DTPOFF32:
4474 1.1 christos case R_PARISC_TLS_TPREL32:
4475 1.1 christos return reloc_class_normal;
4476 1.1 christos }
4477 1.1 christos
4478 1.1 christos if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4479 1.1 christos return reloc_class_relative;
4480 1.1 christos
4481 1.1 christos switch ((int) ELF32_R_TYPE (rela->r_info))
4482 1.1 christos {
4483 1.1 christos case R_PARISC_IPLT:
4484 1.1 christos return reloc_class_plt;
4485 1.1 christos case R_PARISC_COPY:
4486 1.1 christos return reloc_class_copy;
4487 1.1 christos default:
4488 1.1 christos return reloc_class_normal;
4489 1.1 christos }
4490 1.1 christos }
4491 1.1 christos
4492 1.1 christos /* Finish up the dynamic sections. */
4493 1.1 christos
4494 1.1 christos static bfd_boolean
4495 1.1 christos elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4496 1.1 christos struct bfd_link_info *info)
4497 1.1 christos {
4498 1.1 christos bfd *dynobj;
4499 1.1 christos struct elf32_hppa_link_hash_table *htab;
4500 1.1 christos asection *sdyn;
4501 1.1 christos
4502 1.1 christos htab = hppa_link_hash_table (info);
4503 1.1 christos if (htab == NULL)
4504 1.1 christos return FALSE;
4505 1.1 christos
4506 1.1 christos dynobj = htab->etab.dynobj;
4507 1.1 christos
4508 1.1 christos sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4509 1.1 christos
4510 1.1 christos if (htab->etab.dynamic_sections_created)
4511 1.1 christos {
4512 1.1 christos Elf32_External_Dyn *dyncon, *dynconend;
4513 1.1 christos
4514 1.1 christos if (sdyn == NULL)
4515 1.1 christos abort ();
4516 1.1 christos
4517 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
4518 1.1 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4519 1.1 christos for (; dyncon < dynconend; dyncon++)
4520 1.1 christos {
4521 1.1 christos Elf_Internal_Dyn dyn;
4522 1.1 christos asection *s;
4523 1.1 christos
4524 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4525 1.1 christos
4526 1.1 christos switch (dyn.d_tag)
4527 1.1 christos {
4528 1.1 christos default:
4529 1.1 christos continue;
4530 1.1 christos
4531 1.1 christos case DT_PLTGOT:
4532 1.1 christos /* Use PLTGOT to set the GOT register. */
4533 1.1 christos dyn.d_un.d_ptr = elf_gp (output_bfd);
4534 1.1 christos break;
4535 1.1 christos
4536 1.1 christos case DT_JMPREL:
4537 1.1 christos s = htab->srelplt;
4538 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4539 1.1 christos break;
4540 1.1 christos
4541 1.1 christos case DT_PLTRELSZ:
4542 1.1 christos s = htab->srelplt;
4543 1.1 christos dyn.d_un.d_val = s->size;
4544 1.1 christos break;
4545 1.1 christos
4546 1.1 christos case DT_RELASZ:
4547 1.1 christos /* Don't count procedure linkage table relocs in the
4548 1.1 christos overall reloc count. */
4549 1.1 christos s = htab->srelplt;
4550 1.1 christos if (s == NULL)
4551 1.1 christos continue;
4552 1.1 christos dyn.d_un.d_val -= s->size;
4553 1.1 christos break;
4554 1.1 christos
4555 1.1 christos case DT_RELA:
4556 1.1 christos /* We may not be using the standard ELF linker script.
4557 1.1 christos If .rela.plt is the first .rela section, we adjust
4558 1.1 christos DT_RELA to not include it. */
4559 1.1 christos s = htab->srelplt;
4560 1.1 christos if (s == NULL)
4561 1.1 christos continue;
4562 1.1 christos if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4563 1.1 christos continue;
4564 1.1 christos dyn.d_un.d_ptr += s->size;
4565 1.1 christos break;
4566 1.1 christos }
4567 1.1 christos
4568 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4569 1.1 christos }
4570 1.1 christos }
4571 1.1 christos
4572 1.1 christos if (htab->sgot != NULL && htab->sgot->size != 0)
4573 1.1 christos {
4574 1.1 christos /* Fill in the first entry in the global offset table.
4575 1.1 christos We use it to point to our dynamic section, if we have one. */
4576 1.1 christos bfd_put_32 (output_bfd,
4577 1.1 christos sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4578 1.1 christos htab->sgot->contents);
4579 1.1 christos
4580 1.1 christos /* The second entry is reserved for use by the dynamic linker. */
4581 1.1 christos memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4582 1.1 christos
4583 1.1 christos /* Set .got entry size. */
4584 1.1 christos elf_section_data (htab->sgot->output_section)
4585 1.1 christos ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4586 1.1 christos }
4587 1.1 christos
4588 1.1 christos if (htab->splt != NULL && htab->splt->size != 0)
4589 1.1 christos {
4590 1.1 christos /* Set plt entry size. */
4591 1.1 christos elf_section_data (htab->splt->output_section)
4592 1.1 christos ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
4593 1.1 christos
4594 1.1 christos if (htab->need_plt_stub)
4595 1.1 christos {
4596 1.1 christos /* Set up the .plt stub. */
4597 1.1 christos memcpy (htab->splt->contents
4598 1.1 christos + htab->splt->size - sizeof (plt_stub),
4599 1.1 christos plt_stub, sizeof (plt_stub));
4600 1.1 christos
4601 1.1 christos if ((htab->splt->output_offset
4602 1.1 christos + htab->splt->output_section->vma
4603 1.1 christos + htab->splt->size)
4604 1.1 christos != (htab->sgot->output_offset
4605 1.1 christos + htab->sgot->output_section->vma))
4606 1.1 christos {
4607 1.1 christos (*_bfd_error_handler)
4608 1.1 christos (_(".got section not immediately after .plt section"));
4609 1.1 christos return FALSE;
4610 1.1 christos }
4611 1.1 christos }
4612 1.1 christos }
4613 1.1 christos
4614 1.1 christos return TRUE;
4615 1.1 christos }
4616 1.1 christos
4617 1.1 christos /* Called when writing out an object file to decide the type of a
4618 1.1 christos symbol. */
4619 1.1 christos static int
4620 1.1 christos elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4621 1.1 christos {
4622 1.1 christos if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4623 1.1 christos return STT_PARISC_MILLI;
4624 1.1 christos else
4625 1.1 christos return type;
4626 1.1 christos }
4627 1.1 christos
4628 1.1 christos /* Misc BFD support code. */
4629 1.1 christos #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4630 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4631 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4632 1.1 christos #define elf_info_to_howto elf_hppa_info_to_howto
4633 1.1 christos #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4634 1.1 christos
4635 1.1 christos /* Stuff for the BFD linker. */
4636 1.1 christos #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4637 1.1 christos #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4638 1.1 christos #define bfd_elf32_bfd_link_hash_table_free elf32_hppa_link_hash_table_free
4639 1.1 christos #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4640 1.1 christos #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4641 1.1 christos #define elf_backend_check_relocs elf32_hppa_check_relocs
4642 1.1 christos #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4643 1.1 christos #define elf_backend_fake_sections elf_hppa_fake_sections
4644 1.1 christos #define elf_backend_relocate_section elf32_hppa_relocate_section
4645 1.1 christos #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4646 1.1 christos #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4647 1.1 christos #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4648 1.1 christos #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4649 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4650 1.1 christos #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4651 1.1 christos #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4652 1.1 christos #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4653 1.1 christos #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4654 1.1 christos #define elf_backend_object_p elf32_hppa_object_p
4655 1.1 christos #define elf_backend_final_write_processing elf_hppa_final_write_processing
4656 1.1 christos #define elf_backend_post_process_headers _bfd_elf_set_osabi
4657 1.1 christos #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4658 1.1 christos #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4659 1.1 christos #define elf_backend_action_discarded elf_hppa_action_discarded
4660 1.1 christos
4661 1.1 christos #define elf_backend_can_gc_sections 1
4662 1.1 christos #define elf_backend_can_refcount 1
4663 1.1 christos #define elf_backend_plt_alignment 2
4664 1.1 christos #define elf_backend_want_got_plt 0
4665 1.1 christos #define elf_backend_plt_readonly 0
4666 1.1 christos #define elf_backend_want_plt_sym 0
4667 1.1 christos #define elf_backend_got_header_size 8
4668 1.1 christos #define elf_backend_rela_normal 1
4669 1.1 christos
4670 1.1 christos #define TARGET_BIG_SYM bfd_elf32_hppa_vec
4671 1.1 christos #define TARGET_BIG_NAME "elf32-hppa"
4672 1.1 christos #define ELF_ARCH bfd_arch_hppa
4673 1.1 christos #define ELF_TARGET_ID HPPA32_ELF_DATA
4674 1.1 christos #define ELF_MACHINE_CODE EM_PARISC
4675 1.1 christos #define ELF_MAXPAGESIZE 0x1000
4676 1.1 christos #define ELF_OSABI ELFOSABI_HPUX
4677 1.1 christos #define elf32_bed elf32_hppa_hpux_bed
4678 1.1 christos
4679 1.1 christos #include "elf32-target.h"
4680 1.1 christos
4681 1.1 christos #undef TARGET_BIG_SYM
4682 1.1 christos #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4683 1.1 christos #undef TARGET_BIG_NAME
4684 1.1 christos #define TARGET_BIG_NAME "elf32-hppa-linux"
4685 1.1 christos #undef ELF_OSABI
4686 1.1 christos #define ELF_OSABI ELFOSABI_LINUX
4687 1.1 christos #undef elf32_bed
4688 1.1 christos #define elf32_bed elf32_hppa_linux_bed
4689 1.1 christos
4690 1.1 christos #include "elf32-target.h"
4691 1.1 christos
4692 1.1 christos #undef TARGET_BIG_SYM
4693 1.1 christos #define TARGET_BIG_SYM bfd_elf32_hppa_nbsd_vec
4694 1.1 christos #undef TARGET_BIG_NAME
4695 1.1 christos #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4696 1.1 christos #undef ELF_OSABI
4697 1.1 christos #define ELF_OSABI ELFOSABI_NETBSD
4698 1.1 christos #undef elf32_bed
4699 1.1 christos #define elf32_bed elf32_hppa_netbsd_bed
4700 1.1 christos
4701 1.1 christos #include "elf32-target.h"
4702