Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for HP PA-RISC ELF files. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
30667bf3 | 5 | Original code by |
252b5132 RH |
6 | Center for Software Science |
7 | Department of Computer Science | |
8 | University of Utah | |
30667bf3 | 9 | Largely rewritten by Alan Modra <alan@linuxcare.com.au> |
252b5132 RH |
10 | |
11 | This file is part of BFD, the Binary File Descriptor library. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
26 | ||
27 | #include "bfd.h" | |
28 | #include "sysdep.h" | |
252b5132 RH |
29 | #include "libbfd.h" |
30 | #include "elf-bfd.h" | |
9e103c9c JL |
31 | #include "elf/hppa.h" |
32 | #include "libhppa.h" | |
33 | #include "elf32-hppa.h" | |
34 | #define ARCH_SIZE 32 | |
35 | #include "elf-hppa.h" | |
edd21aca | 36 | #include "elf32-hppa.h" |
9e103c9c | 37 | |
74d1c347 AM |
38 | /* In order to gain some understanding of code in this file without |
39 | knowing all the intricate details of the linker, note the | |
40 | following: | |
41 | ||
42 | Functions named elf32_hppa_* are called by external routines, other | |
43 | functions are only called locally. elf32_hppa_* functions appear | |
44 | in this file more or less in the order in which they are called | |
45 | from external routines. eg. elf32_hppa_check_relocs is called | |
46 | early in the link process, elf32_hppa_finish_dynamic_sections is | |
47 | one of the last functions. */ | |
48 | ||
edd21aca | 49 | /* We use two hash tables to hold information for linking PA ELF objects. |
252b5132 RH |
50 | |
51 | The first is the elf32_hppa_link_hash_table which is derived | |
52 | from the standard ELF linker hash table. We use this as a place to | |
53 | attach other hash tables and static information. | |
54 | ||
55 | The second is the stub hash table which is derived from the | |
56 | base BFD hash table. The stub hash table holds the information | |
30667bf3 AM |
57 | necessary to build the linker stubs during a link. |
58 | ||
59 | There are a number of different stubs generated by the linker. | |
60 | ||
61 | Long branch stub: | |
62 | : ldil LR'X,%r1 | |
63 | : be,n RR'X(%sr4,%r1) | |
64 | ||
65 | PIC long branch stub: | |
66 | : b,l .+8,%r1 | |
3ee1d854 AM |
67 | : addil LR'X - ($PIC_pcrel$0 - 4),%r1 |
68 | : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) | |
30667bf3 AM |
69 | |
70 | Import stub to call shared library routine from normal object file | |
71 | (single sub-space version) | |
3ee1d854 AM |
72 | : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point |
73 | : ldw RR'lt_ptr+ltoff(%r1),%r21 | |
30667bf3 | 74 | : bv %r0(%r21) |
3ee1d854 | 75 | : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. |
30667bf3 AM |
76 | |
77 | Import stub to call shared library routine from shared library | |
78 | (single sub-space version) | |
3ee1d854 AM |
79 | : addil LR'ltoff,%r19 ; get procedure entry point |
80 | : ldw RR'ltoff(%r1),%r21 | |
30667bf3 | 81 | : bv %r0(%r21) |
3ee1d854 | 82 | : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. |
30667bf3 AM |
83 | |
84 | Import stub to call shared library routine from normal object file | |
85 | (multiple sub-space support) | |
3ee1d854 AM |
86 | : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point |
87 | : ldw RR'lt_ptr+ltoff(%r1),%r21 | |
88 | : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
30667bf3 AM |
89 | : ldsid (%r21),%r1 |
90 | : mtsp %r1,%sr0 | |
91 | : be 0(%sr0,%r21) ; branch to target | |
92 | : stw %rp,-24(%sp) ; save rp | |
93 | ||
94 | Import stub to call shared library routine from shared library | |
95 | (multiple sub-space support) | |
3ee1d854 AM |
96 | : addil LR'ltoff,%r19 ; get procedure entry point |
97 | : ldw RR'ltoff(%r1),%r21 | |
98 | : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. | |
30667bf3 AM |
99 | : ldsid (%r21),%r1 |
100 | : mtsp %r1,%sr0 | |
101 | : be 0(%sr0,%r21) ; branch to target | |
102 | : stw %rp,-24(%sp) ; save rp | |
103 | ||
104 | Export stub to return from shared lib routine (multiple sub-space support) | |
105 | One of these is created for each exported procedure in a shared | |
106 | library (and stored in the shared lib). Shared lib routines are | |
107 | called via the first instruction in the export stub so that we can | |
108 | do an inter-space return. Not required for single sub-space. | |
109 | : bl,n X,%rp ; trap the return | |
110 | : nop | |
111 | : ldw -24(%sp),%rp ; restore the original rp | |
112 | : ldsid (%rp),%r1 | |
113 | : mtsp %r1,%sr0 | |
74d1c347 | 114 | : be,n 0(%sr0,%rp) ; inter-space return */ |
30667bf3 AM |
115 | |
116 | #define PLT_ENTRY_SIZE 8 | |
74d1c347 | 117 | #define PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE |
30667bf3 AM |
118 | #define GOT_ENTRY_SIZE 4 |
119 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
120 | ||
47d89dba AM |
121 | static const bfd_byte plt_stub[] = |
122 | { | |
123 | 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */ | |
124 | 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */ | |
125 | 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */ | |
126 | #define PLT_STUB_ENTRY (3*4) | |
127 | 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */ | |
128 | 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */ | |
129 | 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */ | |
130 | 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */ | |
131 | }; | |
132 | ||
30667bf3 AM |
133 | /* Section name for stubs is the associated section name plus this |
134 | string. */ | |
135 | #define STUB_SUFFIX ".stub" | |
136 | ||
137 | /* Setting the following non-zero makes all long branch stubs | |
138 | generated during a shared link of the PIC variety. This saves on | |
139 | relocs, but costs one extra instruction per stub. */ | |
140 | #ifndef LONG_BRANCH_PIC_IN_SHLIB | |
141 | #define LONG_BRANCH_PIC_IN_SHLIB 1 | |
142 | #endif | |
252b5132 | 143 | |
74d1c347 AM |
144 | /* Set this non-zero to use import stubs instead of long branch stubs |
145 | where a .plt entry exists for the symbol. This is a fairly useless | |
146 | option as import stubs are bigger than PIC long branch stubs. */ | |
147 | #ifndef LONG_BRANCH_VIA_PLT | |
148 | #define LONG_BRANCH_VIA_PLT 0 | |
149 | #endif | |
150 | ||
30667bf3 AM |
151 | /* We don't need to copy any PC- or GP-relative dynamic relocs into a |
152 | shared object's dynamic section. */ | |
153 | #ifndef RELATIVE_DYNAMIC_RELOCS | |
154 | #define RELATIVE_DYNAMIC_RELOCS 0 | |
155 | #endif | |
156 | ||
30667bf3 AM |
157 | enum elf32_hppa_stub_type { |
158 | hppa_stub_long_branch, | |
159 | hppa_stub_long_branch_shared, | |
160 | hppa_stub_import, | |
161 | hppa_stub_import_shared, | |
162 | hppa_stub_export, | |
163 | hppa_stub_none | |
164 | }; | |
165 | ||
30667bf3 | 166 | struct elf32_hppa_stub_hash_entry { |
252b5132 | 167 | |
edd21aca | 168 | /* Base hash table entry structure. */ |
252b5132 RH |
169 | struct bfd_hash_entry root; |
170 | ||
edd21aca AM |
171 | /* The stub section. */ |
172 | asection *stub_sec; | |
173 | ||
30667bf3 AM |
174 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
175 | /* It's associated reloc section. */ | |
176 | asection *reloc_sec; | |
177 | #endif | |
178 | ||
edd21aca | 179 | /* Offset within stub_sec of the beginning of this stub. */ |
30667bf3 | 180 | bfd_vma stub_offset; |
252b5132 RH |
181 | |
182 | /* Given the symbol's value and its section we can determine its final | |
183 | value when building the stubs (so the stub knows where to jump. */ | |
30667bf3 | 184 | bfd_vma target_value; |
252b5132 | 185 | asection *target_section; |
30667bf3 AM |
186 | |
187 | enum elf32_hppa_stub_type stub_type; | |
188 | ||
189 | /* The symbol table entry, if any, that this was derived from. */ | |
190 | struct elf32_hppa_link_hash_entry *h; | |
191 | ||
25f72752 AM |
192 | /* Where this stub is being called from, or, in the case of combined |
193 | stub sections, the first input section in the group. */ | |
194 | asection *id_sec; | |
252b5132 RH |
195 | }; |
196 | ||
30667bf3 AM |
197 | struct elf32_hppa_link_hash_entry { |
198 | ||
199 | struct elf_link_hash_entry elf; | |
200 | ||
201 | /* A pointer to the most recently used stub hash entry against this | |
202 | symbol. */ | |
203 | struct elf32_hppa_stub_hash_entry *stub_cache; | |
204 | ||
205 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
206 | /* Used to track whether we have allocated space for a long branch | |
207 | stub relocation for this symbol in the given section. */ | |
208 | asection *stub_reloc_sec; | |
209 | #endif | |
210 | ||
211 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
212 | /* Used to count relocations for delayed sizing of relocation | |
213 | sections. */ | |
214 | struct elf32_hppa_dyn_reloc_entry { | |
215 | ||
216 | /* Next relocation in the chain. */ | |
217 | struct elf32_hppa_dyn_reloc_entry *next; | |
218 | ||
219 | /* The section in dynobj. */ | |
220 | asection *section; | |
221 | ||
222 | /* Number of relocs copied in this section. */ | |
223 | bfd_size_type count; | |
224 | } *reloc_entries; | |
225 | #endif | |
226 | ||
227 | /* Set during a static link if we detect a function is PIC. */ | |
12cca0d2 AM |
228 | unsigned int maybe_pic_call:1; |
229 | ||
230 | /* Set if the only reason we need a .plt entry is for a non-PIC to | |
231 | PIC function call. */ | |
74d1c347 AM |
232 | unsigned int pic_call:1; |
233 | ||
234 | /* Set if this symbol is used by a plabel reloc. */ | |
235 | unsigned int plabel:1; | |
236 | ||
237 | /* Set if this symbol is an init or fini function and thus should | |
238 | use an absolute reloc. */ | |
239 | unsigned int plt_abs:1; | |
30667bf3 AM |
240 | }; |
241 | ||
30667bf3 AM |
242 | struct elf32_hppa_link_hash_table { |
243 | ||
252b5132 RH |
244 | /* The main hash table. */ |
245 | struct elf_link_hash_table root; | |
246 | ||
247 | /* The stub hash table. */ | |
edd21aca | 248 | struct bfd_hash_table stub_hash_table; |
252b5132 | 249 | |
30667bf3 AM |
250 | /* Linker stub bfd. */ |
251 | bfd *stub_bfd; | |
252 | ||
30667bf3 AM |
253 | /* Linker call-backs. */ |
254 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
255 | void (*layout_sections_again) PARAMS ((void)); | |
256 | ||
25f72752 AM |
257 | /* Array to keep track of which stub sections have been created, and |
258 | information on stub grouping. */ | |
259 | struct map_stub { | |
260 | /* This is the section to which stubs in the group will be | |
261 | attached. */ | |
262 | asection *link_sec; | |
263 | /* The stub section. */ | |
264 | asection *stub_sec; | |
30667bf3 | 265 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
25f72752 AM |
266 | /* The stub section's reloc section. */ |
267 | asection *reloc_sec; | |
30667bf3 | 268 | #endif |
25f72752 | 269 | } *stub_group; |
30667bf3 | 270 | |
30667bf3 AM |
271 | /* Short-cuts to get to dynamic linker sections. */ |
272 | asection *sgot; | |
273 | asection *srelgot; | |
274 | asection *splt; | |
275 | asection *srelplt; | |
276 | asection *sdynbss; | |
277 | asection *srelbss; | |
47d89dba | 278 | |
c46b7515 AM |
279 | /* Used during a final link to store the base of the text and data |
280 | segments so that we can perform SEGREL relocations. */ | |
281 | bfd_vma text_segment_base; | |
282 | bfd_vma data_segment_base; | |
283 | ||
47d89dba AM |
284 | /* Whether we support multiple sub-spaces for shared libs. */ |
285 | unsigned int multi_subspace:1; | |
286 | ||
287 | /* Flags set when PCREL12F and PCREL17F branches detected. Used to | |
288 | select suitable defaults for the stub group size. */ | |
289 | unsigned int has_12bit_branch:1; | |
290 | unsigned int has_17bit_branch:1; | |
291 | ||
292 | /* Set if we need a .plt stub to support lazy dynamic linking. */ | |
293 | unsigned int need_plt_stub:1; | |
252b5132 RH |
294 | }; |
295 | ||
30667bf3 AM |
296 | /* Various hash macros and functions. */ |
297 | #define hppa_link_hash_table(p) \ | |
edd21aca | 298 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
252b5132 | 299 | |
30667bf3 AM |
300 | #define hppa_stub_hash_lookup(table, string, create, copy) \ |
301 | ((struct elf32_hppa_stub_hash_entry *) \ | |
302 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
303 | ||
304 | static struct bfd_hash_entry *stub_hash_newfunc | |
305 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
edd21aca | 306 | |
30667bf3 | 307 | static struct bfd_hash_entry *hppa_link_hash_newfunc |
edd21aca | 308 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
252b5132 RH |
309 | |
310 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create | |
311 | PARAMS ((bfd *)); | |
312 | ||
30667bf3 AM |
313 | /* Stub handling functions. */ |
314 | static char *hppa_stub_name | |
315 | PARAMS ((const asection *, const asection *, | |
316 | const struct elf32_hppa_link_hash_entry *, | |
317 | const Elf_Internal_Rela *)); | |
edd21aca | 318 | |
30667bf3 AM |
319 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry |
320 | PARAMS ((const asection *, const asection *, | |
321 | struct elf32_hppa_link_hash_entry *, | |
25f72752 AM |
322 | const Elf_Internal_Rela *, |
323 | struct elf32_hppa_link_hash_table *)); | |
edd21aca | 324 | |
30667bf3 | 325 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub |
25f72752 | 326 | PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *)); |
30667bf3 AM |
327 | |
328 | static enum elf32_hppa_stub_type hppa_type_of_stub | |
329 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
330 | struct elf32_hppa_link_hash_entry *, bfd_vma)); | |
331 | ||
332 | static boolean hppa_build_one_stub | |
333 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
334 | ||
335 | static boolean hppa_size_one_stub | |
336 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
337 | ||
30667bf3 AM |
338 | /* BFD and elf backend functions. */ |
339 | static boolean elf32_hppa_object_p PARAMS ((bfd *)); | |
252b5132 | 340 | |
edd21aca AM |
341 | static boolean elf32_hppa_add_symbol_hook |
342 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
343 | const char **, flagword *, asection **, bfd_vma *)); | |
252b5132 | 344 | |
30667bf3 AM |
345 | static boolean elf32_hppa_create_dynamic_sections |
346 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 | 347 | |
30667bf3 AM |
348 | static boolean elf32_hppa_check_relocs |
349 | PARAMS ((bfd *, struct bfd_link_info *, | |
350 | asection *, const Elf_Internal_Rela *)); | |
351 | ||
352 | static asection *elf32_hppa_gc_mark_hook | |
353 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
354 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
355 | ||
356 | static boolean elf32_hppa_gc_sweep_hook | |
357 | PARAMS ((bfd *, struct bfd_link_info *, | |
358 | asection *, const Elf_Internal_Rela *)); | |
359 | ||
74d1c347 AM |
360 | static void elf32_hppa_hide_symbol |
361 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
362 | ||
30667bf3 AM |
363 | static boolean elf32_hppa_adjust_dynamic_symbol |
364 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
365 | ||
366 | static boolean hppa_handle_PIC_calls | |
367 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
368 | ||
4dc86686 AM |
369 | static boolean allocate_plt_and_got |
370 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
371 | ||
74d1c347 AM |
372 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
373 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
374 | static boolean hppa_discard_copies |
375 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
376 | #endif | |
377 | ||
d5c73c2f AM |
378 | static boolean clobber_millicode_symbols |
379 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); | |
380 | ||
30667bf3 AM |
381 | static boolean elf32_hppa_size_dynamic_sections |
382 | PARAMS ((bfd *, struct bfd_link_info *)); | |
383 | ||
c46b7515 AM |
384 | static boolean elf32_hppa_final_link |
385 | PARAMS ((bfd *, struct bfd_link_info *)); | |
386 | ||
387 | static void hppa_record_segment_addr | |
388 | PARAMS ((bfd *, asection *, PTR)); | |
389 | ||
30667bf3 AM |
390 | static bfd_reloc_status_type final_link_relocate |
391 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *, | |
25f72752 | 392 | bfd_vma, struct elf32_hppa_link_hash_table *, asection *, |
30667bf3 AM |
393 | struct elf32_hppa_link_hash_entry *)); |
394 | ||
395 | static boolean elf32_hppa_relocate_section | |
396 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, | |
397 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
398 | ||
c46b7515 AM |
399 | static int hppa_unwind_entry_compare |
400 | PARAMS ((const PTR, const PTR)); | |
401 | ||
30667bf3 AM |
402 | static boolean elf32_hppa_finish_dynamic_symbol |
403 | PARAMS ((bfd *, struct bfd_link_info *, | |
404 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
405 | ||
406 | static boolean elf32_hppa_finish_dynamic_sections | |
407 | PARAMS ((bfd *, struct bfd_link_info *)); | |
408 | ||
d952f17a AM |
409 | static void elf32_hppa_post_process_headers |
410 | PARAMS ((bfd *, struct bfd_link_info *)); | |
411 | ||
30667bf3 AM |
412 | static int elf32_hppa_elf_get_symbol_type |
413 | PARAMS ((Elf_Internal_Sym *, int)); | |
252b5132 | 414 | |
252b5132 RH |
415 | /* Assorted hash table functions. */ |
416 | ||
417 | /* Initialize an entry in the stub hash table. */ | |
418 | ||
419 | static struct bfd_hash_entry * | |
30667bf3 | 420 | stub_hash_newfunc (entry, table, string) |
252b5132 RH |
421 | struct bfd_hash_entry *entry; |
422 | struct bfd_hash_table *table; | |
423 | const char *string; | |
424 | { | |
425 | struct elf32_hppa_stub_hash_entry *ret; | |
426 | ||
427 | ret = (struct elf32_hppa_stub_hash_entry *) entry; | |
428 | ||
429 | /* Allocate the structure if it has not already been allocated by a | |
430 | subclass. */ | |
431 | if (ret == NULL) | |
30667bf3 AM |
432 | { |
433 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
434 | bfd_hash_allocate (table, | |
435 | sizeof (struct elf32_hppa_stub_hash_entry))); | |
436 | if (ret == NULL) | |
437 | return NULL; | |
438 | } | |
252b5132 RH |
439 | |
440 | /* Call the allocation method of the superclass. */ | |
441 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
442 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
443 | ||
444 | if (ret) | |
445 | { | |
446 | /* Initialize the local fields. */ | |
edd21aca | 447 | ret->stub_sec = NULL; |
30667bf3 AM |
448 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
449 | ret->reloc_sec = NULL; | |
450 | #endif | |
451 | ret->stub_offset = 0; | |
252b5132 RH |
452 | ret->target_value = 0; |
453 | ret->target_section = NULL; | |
30667bf3 AM |
454 | ret->stub_type = hppa_stub_long_branch; |
455 | ret->h = NULL; | |
25f72752 | 456 | ret->id_sec = NULL; |
30667bf3 AM |
457 | } |
458 | ||
459 | return (struct bfd_hash_entry *) ret; | |
460 | } | |
461 | ||
30667bf3 AM |
462 | /* Initialize an entry in the link hash table. */ |
463 | ||
464 | static struct bfd_hash_entry * | |
465 | hppa_link_hash_newfunc (entry, table, string) | |
466 | struct bfd_hash_entry *entry; | |
467 | struct bfd_hash_table *table; | |
468 | const char *string; | |
469 | { | |
470 | struct elf32_hppa_link_hash_entry *ret; | |
471 | ||
472 | ret = (struct elf32_hppa_link_hash_entry *) entry; | |
473 | ||
474 | /* Allocate the structure if it has not already been allocated by a | |
475 | subclass. */ | |
476 | if (ret == NULL) | |
477 | { | |
478 | ret = ((struct elf32_hppa_link_hash_entry *) | |
479 | bfd_hash_allocate (table, | |
480 | sizeof (struct elf32_hppa_link_hash_entry))); | |
481 | if (ret == NULL) | |
482 | return NULL; | |
483 | } | |
484 | ||
485 | /* Call the allocation method of the superclass. */ | |
486 | ret = ((struct elf32_hppa_link_hash_entry *) | |
487 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
488 | table, string)); | |
489 | ||
490 | if (ret) | |
491 | { | |
492 | /* Initialize the local fields. */ | |
493 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
494 | ret->stub_reloc_sec = NULL; | |
495 | #endif | |
496 | ret->stub_cache = NULL; | |
497 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
498 | ret->reloc_entries = NULL; | |
499 | #endif | |
12cca0d2 | 500 | ret->maybe_pic_call = 0; |
30667bf3 | 501 | ret->pic_call = 0; |
74d1c347 AM |
502 | ret->plabel = 0; |
503 | ret->plt_abs = 0; | |
252b5132 RH |
504 | } |
505 | ||
506 | return (struct bfd_hash_entry *) ret; | |
507 | } | |
508 | ||
252b5132 RH |
509 | /* Create the derived linker hash table. The PA ELF port uses the derived |
510 | hash table to keep information specific to the PA ELF linker (without | |
511 | using static variables). */ | |
512 | ||
513 | static struct bfd_link_hash_table * | |
514 | elf32_hppa_link_hash_table_create (abfd) | |
515 | bfd *abfd; | |
516 | { | |
517 | struct elf32_hppa_link_hash_table *ret; | |
518 | ||
edd21aca | 519 | ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret))); |
252b5132 RH |
520 | if (ret == NULL) |
521 | return NULL; | |
edd21aca | 522 | |
30667bf3 | 523 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc)) |
252b5132 RH |
524 | { |
525 | bfd_release (abfd, ret); | |
526 | return NULL; | |
527 | } | |
edd21aca AM |
528 | |
529 | /* Init the stub hash table too. */ | |
30667bf3 | 530 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc)) |
edd21aca AM |
531 | return NULL; |
532 | ||
30667bf3 | 533 | ret->stub_bfd = NULL; |
30667bf3 AM |
534 | ret->add_stub_section = NULL; |
535 | ret->layout_sections_again = NULL; | |
25f72752 | 536 | ret->stub_group = NULL; |
30667bf3 AM |
537 | ret->sgot = NULL; |
538 | ret->srelgot = NULL; | |
539 | ret->splt = NULL; | |
540 | ret->srelplt = NULL; | |
541 | ret->sdynbss = NULL; | |
542 | ret->srelbss = NULL; | |
c46b7515 AM |
543 | ret->text_segment_base = (bfd_vma) -1; |
544 | ret->data_segment_base = (bfd_vma) -1; | |
47d89dba AM |
545 | ret->multi_subspace = 0; |
546 | ret->has_12bit_branch = 0; | |
547 | ret->has_17bit_branch = 0; | |
548 | ret->need_plt_stub = 0; | |
252b5132 RH |
549 | |
550 | return &ret->root.root; | |
551 | } | |
552 | ||
30667bf3 AM |
553 | /* Build a name for an entry in the stub hash table. */ |
554 | ||
edd21aca | 555 | static char * |
30667bf3 | 556 | hppa_stub_name (input_section, sym_sec, hash, rel) |
edd21aca | 557 | const asection *input_section; |
30667bf3 AM |
558 | const asection *sym_sec; |
559 | const struct elf32_hppa_link_hash_entry *hash; | |
560 | const Elf_Internal_Rela *rel; | |
edd21aca AM |
561 | { |
562 | char *stub_name; | |
74d1c347 | 563 | size_t len; |
edd21aca | 564 | |
30667bf3 AM |
565 | if (hash) |
566 | { | |
567 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; | |
568 | stub_name = bfd_malloc (len); | |
569 | if (stub_name != NULL) | |
570 | { | |
571 | sprintf (stub_name, "%08x_%s+%x", | |
572 | input_section->id & 0xffffffff, | |
573 | hash->elf.root.root.string, | |
574 | (int) rel->r_addend & 0xffffffff); | |
575 | } | |
576 | } | |
577 | else | |
edd21aca | 578 | { |
30667bf3 AM |
579 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
580 | stub_name = bfd_malloc (len); | |
581 | if (stub_name != NULL) | |
582 | { | |
583 | sprintf (stub_name, "%08x_%x:%x+%x", | |
584 | input_section->id & 0xffffffff, | |
585 | sym_sec->id & 0xffffffff, | |
586 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
587 | (int) rel->r_addend & 0xffffffff); | |
588 | } | |
edd21aca AM |
589 | } |
590 | return stub_name; | |
591 | } | |
252b5132 | 592 | |
30667bf3 AM |
593 | /* Look up an entry in the stub hash. Stub entries are cached because |
594 | creating the stub name takes a bit of time. */ | |
595 | ||
596 | static struct elf32_hppa_stub_hash_entry * | |
25f72752 | 597 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink) |
30667bf3 AM |
598 | const asection *input_section; |
599 | const asection *sym_sec; | |
600 | struct elf32_hppa_link_hash_entry *hash; | |
601 | const Elf_Internal_Rela *rel; | |
25f72752 | 602 | struct elf32_hppa_link_hash_table *hplink; |
252b5132 | 603 | { |
30667bf3 | 604 | struct elf32_hppa_stub_hash_entry *stub_entry; |
25f72752 AM |
605 | const asection *id_sec; |
606 | ||
607 | /* If this input section is part of a group of sections sharing one | |
608 | stub section, then use the id of the first section in the group. | |
609 | Stub names need to include a section id, as there may well be | |
610 | more than one stub used to reach say, printf, and we need to | |
611 | distinguish between them. */ | |
612 | id_sec = hplink->stub_group[input_section->id].link_sec; | |
edd21aca | 613 | |
30667bf3 AM |
614 | if (hash != NULL && hash->stub_cache != NULL |
615 | && hash->stub_cache->h == hash | |
25f72752 | 616 | && hash->stub_cache->id_sec == id_sec) |
edd21aca | 617 | { |
30667bf3 AM |
618 | stub_entry = hash->stub_cache; |
619 | } | |
620 | else | |
621 | { | |
30667bf3 | 622 | char *stub_name; |
edd21aca | 623 | |
25f72752 | 624 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel); |
30667bf3 AM |
625 | if (stub_name == NULL) |
626 | return NULL; | |
edd21aca | 627 | |
25f72752 AM |
628 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, |
629 | stub_name, false, false); | |
30667bf3 AM |
630 | if (stub_entry == NULL) |
631 | { | |
632 | if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak) | |
633 | (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"), | |
634 | bfd_get_filename (input_section->owner), | |
635 | input_section->name, | |
636 | (long) rel->r_offset, | |
637 | stub_name); | |
638 | } | |
639 | else | |
640 | { | |
641 | if (hash != NULL) | |
642 | hash->stub_cache = stub_entry; | |
643 | } | |
644 | ||
645 | free (stub_name); | |
edd21aca | 646 | } |
30667bf3 AM |
647 | |
648 | return stub_entry; | |
649 | } | |
650 | ||
30667bf3 AM |
651 | /* Add a new stub entry to the stub hash. Not all fields of the new |
652 | stub entry are initialised. */ | |
653 | ||
654 | static struct elf32_hppa_stub_hash_entry * | |
25f72752 | 655 | hppa_add_stub (stub_name, section, hplink) |
30667bf3 AM |
656 | const char *stub_name; |
657 | asection *section; | |
25f72752 | 658 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 | 659 | { |
25f72752 | 660 | asection *link_sec; |
30667bf3 | 661 | asection *stub_sec; |
30667bf3 | 662 | struct elf32_hppa_stub_hash_entry *stub_entry; |
edd21aca | 663 | |
25f72752 AM |
664 | link_sec = hplink->stub_group[section->id].link_sec; |
665 | stub_sec = hplink->stub_group[section->id].stub_sec; | |
30667bf3 | 666 | if (stub_sec == NULL) |
edd21aca | 667 | { |
25f72752 | 668 | stub_sec = hplink->stub_group[link_sec->id].stub_sec; |
30667bf3 AM |
669 | if (stub_sec == NULL) |
670 | { | |
74d1c347 | 671 | size_t len; |
30667bf3 AM |
672 | char *s_name; |
673 | ||
25f72752 | 674 | len = strlen (link_sec->name) + sizeof (STUB_SUFFIX); |
30667bf3 AM |
675 | s_name = bfd_alloc (hplink->stub_bfd, len); |
676 | if (s_name == NULL) | |
677 | return NULL; | |
678 | ||
25f72752 | 679 | strcpy (s_name, link_sec->name); |
30667bf3 | 680 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); |
25f72752 | 681 | stub_sec = (*hplink->add_stub_section) (s_name, link_sec); |
30667bf3 AM |
682 | if (stub_sec == NULL) |
683 | return NULL; | |
25f72752 | 684 | hplink->stub_group[link_sec->id].stub_sec = stub_sec; |
30667bf3 | 685 | } |
25f72752 | 686 | hplink->stub_group[section->id].stub_sec = stub_sec; |
edd21aca | 687 | } |
252b5132 | 688 | |
30667bf3 AM |
689 | /* Enter this entry into the linker stub hash table. */ |
690 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name, | |
691 | true, false); | |
692 | if (stub_entry == NULL) | |
693 | { | |
694 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
695 | bfd_get_filename (section->owner), | |
696 | stub_name); | |
697 | return NULL; | |
edd21aca AM |
698 | } |
699 | ||
30667bf3 AM |
700 | stub_entry->stub_sec = stub_sec; |
701 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
25f72752 | 702 | stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec; |
30667bf3 AM |
703 | #endif |
704 | stub_entry->stub_offset = 0; | |
25f72752 | 705 | stub_entry->id_sec = link_sec; |
30667bf3 | 706 | return stub_entry; |
edd21aca AM |
707 | } |
708 | ||
30667bf3 AM |
709 | /* Determine the type of stub needed, if any, for a call. */ |
710 | ||
711 | static enum elf32_hppa_stub_type | |
712 | hppa_type_of_stub (input_sec, rel, hash, destination) | |
713 | asection *input_sec; | |
714 | const Elf_Internal_Rela *rel; | |
715 | struct elf32_hppa_link_hash_entry *hash; | |
716 | bfd_vma destination; | |
edd21aca | 717 | { |
edd21aca | 718 | bfd_vma location; |
30667bf3 AM |
719 | bfd_vma branch_offset; |
720 | bfd_vma max_branch_offset; | |
721 | unsigned int r_type; | |
722 | ||
723 | if (hash != NULL | |
724 | && (((hash->elf.root.type == bfd_link_hash_defined | |
74d1c347 AM |
725 | || hash->elf.root.type == bfd_link_hash_defweak) |
726 | && hash->elf.root.u.def.section->output_section == NULL) | |
727 | || (hash->elf.root.type == bfd_link_hash_defweak | |
728 | && hash->elf.dynindx != -1 | |
729 | && hash->elf.plt.offset != (bfd_vma) -1) | |
30667bf3 AM |
730 | || hash->elf.root.type == bfd_link_hash_undefweak |
731 | || hash->elf.root.type == bfd_link_hash_undefined | |
12cca0d2 | 732 | || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF)))) |
30667bf3 AM |
733 | { |
734 | /* If output_section is NULL, then it's a symbol defined in a | |
735 | shared library. We will need an import stub. Decide between | |
74d1c347 AM |
736 | hppa_stub_import and hppa_stub_import_shared later. For |
737 | shared links we need stubs for undefined or weak syms too; | |
738 | They will presumably be resolved by the dynamic linker. */ | |
30667bf3 AM |
739 | return hppa_stub_import; |
740 | } | |
edd21aca | 741 | |
30667bf3 AM |
742 | /* Determine where the call point is. */ |
743 | location = (input_sec->output_offset | |
744 | + input_sec->output_section->vma | |
745 | + rel->r_offset); | |
edd21aca | 746 | |
30667bf3 AM |
747 | branch_offset = destination - location - 8; |
748 | r_type = ELF32_R_TYPE (rel->r_info); | |
edd21aca | 749 | |
30667bf3 AM |
750 | /* Determine if a long branch stub is needed. parisc branch offsets |
751 | are relative to the second instruction past the branch, ie. +8 | |
752 | bytes on from the branch instruction location. The offset is | |
753 | signed and counts in units of 4 bytes. */ | |
754 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
edd21aca | 755 | { |
30667bf3 AM |
756 | max_branch_offset = (1 << (17-1)) << 2; |
757 | } | |
758 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
759 | { | |
760 | max_branch_offset = (1 << (12-1)) << 2; | |
761 | } | |
25f72752 | 762 | else /* R_PARISC_PCREL22F. */ |
30667bf3 AM |
763 | { |
764 | max_branch_offset = (1 << (22-1)) << 2; | |
edd21aca AM |
765 | } |
766 | ||
30667bf3 | 767 | if (branch_offset + max_branch_offset >= 2*max_branch_offset) |
edd21aca | 768 | { |
74d1c347 | 769 | #if LONG_BRANCH_VIA_PLT |
30667bf3 AM |
770 | if (hash != NULL |
771 | && hash->elf.dynindx != -1 | |
4dc86686 AM |
772 | && hash->elf.plt.offset != (bfd_vma) -1 |
773 | && hash->elf.type != STT_PARISC_MILLI) | |
30667bf3 AM |
774 | { |
775 | /* If we are doing a shared link and find we need a long | |
776 | branch stub, then go via the .plt if possible. */ | |
777 | return hppa_stub_import; | |
778 | } | |
779 | else | |
780 | #endif | |
781 | return hppa_stub_long_branch; | |
782 | } | |
783 | return hppa_stub_none; | |
784 | } | |
edd21aca | 785 | |
30667bf3 AM |
786 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
787 | IN_ARG contains the link info pointer. */ | |
edd21aca | 788 | |
30667bf3 AM |
789 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ |
790 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ | |
edd21aca | 791 | |
30667bf3 | 792 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */ |
3ee1d854 | 793 | #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */ |
30667bf3 | 794 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ |
252b5132 | 795 | |
3ee1d854 AM |
796 | #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */ |
797 | #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */ | |
30667bf3 | 798 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ |
3ee1d854 | 799 | #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */ |
252b5132 | 800 | |
3ee1d854 AM |
801 | #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */ |
802 | #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */ | |
edd21aca | 803 | |
30667bf3 AM |
804 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ |
805 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ | |
806 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ | |
807 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ | |
edd21aca | 808 | |
30667bf3 AM |
809 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ |
810 | #define NOP 0x08000240 /* nop */ | |
811 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ | |
812 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ | |
813 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ | |
edd21aca | 814 | |
30667bf3 AM |
815 | #ifndef R19_STUBS |
816 | #define R19_STUBS 1 | |
817 | #endif | |
edd21aca | 818 | |
30667bf3 AM |
819 | #if R19_STUBS |
820 | #define LDW_R1_DLT LDW_R1_R19 | |
821 | #else | |
822 | #define LDW_R1_DLT LDW_R1_DP | |
823 | #endif | |
edd21aca | 824 | |
30667bf3 AM |
825 | static boolean |
826 | hppa_build_one_stub (gen_entry, in_arg) | |
827 | struct bfd_hash_entry *gen_entry; | |
828 | PTR in_arg; | |
829 | { | |
830 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
831 | struct bfd_link_info *info; | |
832 | struct elf32_hppa_link_hash_table *hplink; | |
833 | asection *stub_sec; | |
834 | bfd *stub_bfd; | |
835 | bfd_byte *loc; | |
836 | bfd_vma sym_value; | |
74d1c347 | 837 | bfd_vma insn; |
8dea1268 | 838 | bfd_vma off; |
74d1c347 | 839 | int val; |
30667bf3 | 840 | int size; |
edd21aca | 841 | |
30667bf3 AM |
842 | /* Massage our args to the form they really have. */ |
843 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
844 | info = (struct bfd_link_info *) in_arg; | |
845 | ||
846 | hplink = hppa_link_hash_table (info); | |
847 | stub_sec = stub_entry->stub_sec; | |
edd21aca | 848 | |
30667bf3 | 849 | /* Make a note of the offset within the stubs for this entry. */ |
74d1c347 | 850 | stub_entry->stub_offset = stub_sec->_raw_size; |
30667bf3 | 851 | loc = stub_sec->contents + stub_entry->stub_offset; |
252b5132 | 852 | |
30667bf3 AM |
853 | stub_bfd = stub_sec->owner; |
854 | ||
855 | switch (stub_entry->stub_type) | |
856 | { | |
857 | case hppa_stub_long_branch: | |
858 | /* Create the long branch. A long branch is formed with "ldil" | |
859 | loading the upper bits of the target address into a register, | |
860 | then branching with "be" which adds in the lower bits. | |
861 | The "be" has its delay slot nullified. */ | |
862 | sym_value = (stub_entry->target_value | |
863 | + stub_entry->target_section->output_offset | |
864 | + stub_entry->target_section->output_section->vma); | |
865 | ||
74d1c347 AM |
866 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel); |
867 | insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21); | |
30667bf3 AM |
868 | bfd_put_32 (stub_bfd, insn, loc); |
869 | ||
74d1c347 AM |
870 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2; |
871 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); | |
30667bf3 AM |
872 | bfd_put_32 (stub_bfd, insn, loc + 4); |
873 | ||
874 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
875 | if (info->shared) | |
876 | { | |
877 | /* Output a dynamic relocation for this stub. We only | |
878 | output one PCREL21L reloc per stub, trusting that the | |
879 | dynamic linker will also fix the implied PCREL17R for the | |
880 | second instruction. PCREL21L dynamic relocs had better | |
881 | never be emitted for some other purpose... */ | |
882 | asection *srel; | |
883 | Elf_Internal_Rela outrel; | |
884 | ||
885 | if (stub_entry->h == NULL) | |
edd21aca AM |
886 | { |
887 | (*_bfd_error_handler) | |
30667bf3 AM |
888 | (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"), |
889 | bfd_get_filename (stub_entry->target_section->owner), | |
890 | stub_sec->name, | |
891 | (long) stub_entry->stub_offset, | |
892 | stub_entry->root.string); | |
893 | bfd_set_error (bfd_error_bad_value); | |
894 | return false; | |
edd21aca AM |
895 | } |
896 | ||
30667bf3 AM |
897 | srel = stub_entry->reloc_sec; |
898 | if (srel == NULL) | |
edd21aca AM |
899 | { |
900 | (*_bfd_error_handler) | |
30667bf3 AM |
901 | (_("Could not find relocation section for %s"), |
902 | stub_sec->name); | |
903 | bfd_set_error (bfd_error_bad_value); | |
904 | return false; | |
edd21aca | 905 | } |
252b5132 | 906 | |
30667bf3 AM |
907 | outrel.r_offset = (stub_entry->stub_offset |
908 | + stub_sec->output_offset | |
909 | + stub_sec->output_section->vma); | |
910 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L); | |
911 | outrel.r_addend = sym_value; | |
912 | bfd_elf32_swap_reloca_out (stub_sec->output_section->owner, | |
913 | &outrel, | |
914 | ((Elf32_External_Rela *) | |
915 | srel->contents + srel->reloc_count)); | |
916 | ++srel->reloc_count; | |
252b5132 | 917 | } |
30667bf3 AM |
918 | #endif |
919 | size = 8; | |
edd21aca AM |
920 | break; |
921 | ||
30667bf3 AM |
922 | case hppa_stub_long_branch_shared: |
923 | /* Branches are relative. This is where we are going to. */ | |
924 | sym_value = (stub_entry->target_value | |
925 | + stub_entry->target_section->output_offset | |
926 | + stub_entry->target_section->output_section->vma); | |
927 | ||
928 | /* And this is where we are coming from, more or less. */ | |
929 | sym_value -= (stub_entry->stub_offset | |
930 | + stub_sec->output_offset | |
931 | + stub_sec->output_section->vma); | |
932 | ||
74d1c347 | 933 | bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc); |
47d89dba | 934 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel); |
74d1c347 | 935 | insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21); |
30667bf3 AM |
936 | bfd_put_32 (stub_bfd, insn, loc + 4); |
937 | ||
47d89dba | 938 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2; |
74d1c347 | 939 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); |
30667bf3 AM |
940 | bfd_put_32 (stub_bfd, insn, loc + 8); |
941 | size = 12; | |
942 | break; | |
edd21aca | 943 | |
30667bf3 AM |
944 | case hppa_stub_import: |
945 | case hppa_stub_import_shared: | |
8dea1268 AM |
946 | off = stub_entry->h->elf.plt.offset; |
947 | if (off >= (bfd_vma) -2) | |
49e9d0d3 | 948 | abort (); |
8dea1268 AM |
949 | |
950 | off &= ~ (bfd_vma) 1; | |
951 | sym_value = (off | |
30667bf3 AM |
952 | + hplink->splt->output_offset |
953 | + hplink->splt->output_section->vma | |
954 | - elf_gp (hplink->splt->output_section->owner)); | |
955 | ||
956 | insn = ADDIL_DP; | |
957 | #if R19_STUBS | |
958 | if (stub_entry->stub_type == hppa_stub_import_shared) | |
959 | insn = ADDIL_R19; | |
960 | #endif | |
47d89dba | 961 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel), |
74d1c347 | 962 | insn = hppa_rebuild_insn ((int) insn, val, 21); |
30667bf3 | 963 | bfd_put_32 (stub_bfd, insn, loc); |
edd21aca | 964 | |
47d89dba AM |
965 | /* It is critical to use lrsel/rrsel here because we are using |
966 | two different offsets (+0 and +4) from sym_value. If we use | |
967 | lsel/rsel then with unfortunate sym_values we will round | |
968 | sym_value+4 up to the next 2k block leading to a mis-match | |
969 | between the lsel and rsel value. */ | |
970 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel); | |
74d1c347 | 971 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); |
30667bf3 | 972 | bfd_put_32 (stub_bfd, insn, loc + 4); |
252b5132 | 973 | |
30667bf3 AM |
974 | if (hplink->multi_subspace) |
975 | { | |
47d89dba | 976 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); |
74d1c347 | 977 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); |
30667bf3 | 978 | bfd_put_32 (stub_bfd, insn, loc + 8); |
252b5132 | 979 | |
74d1c347 AM |
980 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12); |
981 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
982 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20); | |
983 | bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24); | |
252b5132 | 984 | |
30667bf3 AM |
985 | size = 28; |
986 | } | |
987 | else | |
988 | { | |
74d1c347 | 989 | bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); |
47d89dba | 990 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); |
74d1c347 | 991 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); |
30667bf3 | 992 | bfd_put_32 (stub_bfd, insn, loc + 12); |
252b5132 | 993 | |
30667bf3 AM |
994 | size = 16; |
995 | } | |
252b5132 | 996 | |
30667bf3 AM |
997 | if (!info->shared |
998 | && stub_entry->h != NULL | |
999 | && stub_entry->h->pic_call) | |
252b5132 | 1000 | { |
30667bf3 AM |
1001 | /* Build the .plt entry needed to call a PIC function from |
1002 | statically linked code. We don't need any relocs. */ | |
1003 | bfd *dynobj; | |
1004 | struct elf32_hppa_link_hash_entry *eh; | |
1005 | bfd_vma value; | |
252b5132 | 1006 | |
74d1c347 | 1007 | dynobj = hplink->root.dynobj; |
30667bf3 | 1008 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; |
252b5132 | 1009 | |
49e9d0d3 AM |
1010 | if (eh->elf.root.type != bfd_link_hash_defined |
1011 | && eh->elf.root.type != bfd_link_hash_defweak) | |
1012 | abort (); | |
252b5132 | 1013 | |
30667bf3 AM |
1014 | value = (eh->elf.root.u.def.value |
1015 | + eh->elf.root.u.def.section->output_offset | |
1016 | + eh->elf.root.u.def.section->output_section->vma); | |
252b5132 | 1017 | |
30667bf3 | 1018 | /* Fill in the entry in the procedure linkage table. |
252b5132 | 1019 | |
30667bf3 | 1020 | The format of a plt entry is |
74d1c347 AM |
1021 | <funcaddr> |
1022 | <__gp>. */ | |
252b5132 | 1023 | |
30667bf3 | 1024 | bfd_put_32 (hplink->splt->owner, value, |
8dea1268 | 1025 | hplink->splt->contents + off); |
30667bf3 AM |
1026 | value = elf_gp (hplink->splt->output_section->owner); |
1027 | bfd_put_32 (hplink->splt->owner, value, | |
8dea1268 | 1028 | hplink->splt->contents + off + 4); |
252b5132 | 1029 | } |
30667bf3 | 1030 | break; |
252b5132 | 1031 | |
30667bf3 AM |
1032 | case hppa_stub_export: |
1033 | /* Branches are relative. This is where we are going to. */ | |
1034 | sym_value = (stub_entry->target_value | |
1035 | + stub_entry->target_section->output_offset | |
1036 | + stub_entry->target_section->output_section->vma); | |
252b5132 | 1037 | |
30667bf3 AM |
1038 | /* And this is where we are coming from. */ |
1039 | sym_value -= (stub_entry->stub_offset | |
1040 | + stub_sec->output_offset | |
1041 | + stub_sec->output_section->vma); | |
edd21aca | 1042 | |
30667bf3 AM |
1043 | if (sym_value - 8 + 0x40000 >= 0x80000) |
1044 | { | |
edd21aca | 1045 | (*_bfd_error_handler) |
30667bf3 AM |
1046 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), |
1047 | bfd_get_filename (stub_entry->target_section->owner), | |
1048 | stub_sec->name, | |
1049 | (long) stub_entry->stub_offset, | |
1050 | stub_entry->root.string); | |
1051 | bfd_set_error (bfd_error_bad_value); | |
edd21aca | 1052 | return false; |
252b5132 | 1053 | } |
30667bf3 | 1054 | |
74d1c347 AM |
1055 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2; |
1056 | insn = hppa_rebuild_insn ((int) BL_RP, val, 17); | |
30667bf3 AM |
1057 | bfd_put_32 (stub_bfd, insn, loc); |
1058 | ||
74d1c347 AM |
1059 | bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4); |
1060 | bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8); | |
1061 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12); | |
1062 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
1063 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20); | |
30667bf3 AM |
1064 | |
1065 | /* Point the function symbol at the stub. */ | |
1066 | stub_entry->h->elf.root.u.def.section = stub_sec; | |
74d1c347 | 1067 | stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size; |
30667bf3 AM |
1068 | |
1069 | size = 24; | |
1070 | break; | |
1071 | ||
1072 | default: | |
1073 | BFD_FAIL (); | |
1074 | return false; | |
252b5132 RH |
1075 | } |
1076 | ||
74d1c347 | 1077 | stub_sec->_raw_size += size; |
252b5132 RH |
1078 | return true; |
1079 | } | |
1080 | ||
30667bf3 AM |
1081 | #undef LDIL_R1 |
1082 | #undef BE_SR4_R1 | |
1083 | #undef BL_R1 | |
1084 | #undef ADDIL_R1 | |
1085 | #undef DEPI_R1 | |
1086 | #undef ADDIL_DP | |
1087 | #undef LDW_R1_R21 | |
1088 | #undef LDW_R1_DLT | |
1089 | #undef LDW_R1_R19 | |
1090 | #undef ADDIL_R19 | |
1091 | #undef LDW_R1_DP | |
1092 | #undef LDSID_R21_R1 | |
1093 | #undef MTSP_R1 | |
1094 | #undef BE_SR0_R21 | |
1095 | #undef STW_RP | |
1096 | #undef BV_R0_R21 | |
1097 | #undef BL_RP | |
1098 | #undef NOP | |
1099 | #undef LDW_RP | |
1100 | #undef LDSID_RP_R1 | |
1101 | #undef BE_SR0_RP | |
252b5132 | 1102 | |
30667bf3 AM |
1103 | /* As above, but don't actually build the stub. Just bump offset so |
1104 | we know stub section sizes. */ | |
1105 | ||
1106 | static boolean | |
1107 | hppa_size_one_stub (gen_entry, in_arg) | |
1108 | struct bfd_hash_entry *gen_entry; | |
1109 | PTR in_arg; | |
252b5132 | 1110 | { |
30667bf3 AM |
1111 | struct elf32_hppa_stub_hash_entry *stub_entry; |
1112 | struct elf32_hppa_link_hash_table *hplink; | |
1113 | int size; | |
1114 | ||
1115 | /* Massage our args to the form they really have. */ | |
1116 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
1117 | hplink = (struct elf32_hppa_link_hash_table *) in_arg; | |
1118 | ||
1119 | if (stub_entry->stub_type == hppa_stub_long_branch) | |
74d1c347 AM |
1120 | { |
1121 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1122 | if (stub_entry->reloc_sec != NULL) | |
1123 | stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela); | |
1124 | #endif | |
1125 | size = 8; | |
1126 | } | |
30667bf3 AM |
1127 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared) |
1128 | size = 12; | |
1129 | else if (stub_entry->stub_type == hppa_stub_export) | |
1130 | size = 24; | |
74d1c347 | 1131 | else /* hppa_stub_import or hppa_stub_import_shared. */ |
252b5132 | 1132 | { |
30667bf3 AM |
1133 | if (hplink->multi_subspace) |
1134 | size = 28; | |
1135 | else | |
1136 | size = 16; | |
1137 | } | |
252b5132 | 1138 | |
74d1c347 | 1139 | stub_entry->stub_sec->_raw_size += size; |
30667bf3 AM |
1140 | return true; |
1141 | } | |
252b5132 | 1142 | |
30667bf3 AM |
1143 | /* Return nonzero if ABFD represents an HPPA ELF32 file. |
1144 | Additionally we set the default architecture and machine. */ | |
1145 | ||
1146 | static boolean | |
1147 | elf32_hppa_object_p (abfd) | |
1148 | bfd *abfd; | |
1149 | { | |
1150 | unsigned int flags = elf_elfheader (abfd)->e_flags; | |
252b5132 | 1151 | |
30667bf3 AM |
1152 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
1153 | { | |
1154 | case EFA_PARISC_1_0: | |
1155 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
1156 | case EFA_PARISC_1_1: | |
1157 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
1158 | case EFA_PARISC_2_0: | |
1159 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
1160 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
1161 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
1162 | } | |
1163 | return true; | |
252b5132 RH |
1164 | } |
1165 | ||
252b5132 RH |
1166 | /* Undo the generic ELF code's subtraction of section->vma from the |
1167 | value of each external symbol. */ | |
1168 | ||
1169 | static boolean | |
1170 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
5f771d47 ILT |
1171 | bfd *abfd ATTRIBUTE_UNUSED; |
1172 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1173 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED; | |
1174 | const char **namep ATTRIBUTE_UNUSED; | |
1175 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
1176 | asection **secp; |
1177 | bfd_vma *valp; | |
1178 | { | |
1179 | *valp += (*secp)->vma; | |
1180 | return true; | |
1181 | } | |
1182 | ||
30667bf3 AM |
1183 | /* Create the .plt and .got sections, and set up our hash table |
1184 | short-cuts to various dynamic sections. */ | |
1185 | ||
1186 | static boolean | |
1187 | elf32_hppa_create_dynamic_sections (abfd, info) | |
1188 | bfd *abfd; | |
1189 | struct bfd_link_info *info; | |
252b5132 | 1190 | { |
30667bf3 | 1191 | struct elf32_hppa_link_hash_table *hplink; |
edd21aca | 1192 | |
30667bf3 AM |
1193 | /* Don't try to create the .plt and .got twice. */ |
1194 | hplink = hppa_link_hash_table (info); | |
1195 | if (hplink->splt != NULL) | |
1196 | return true; | |
edd21aca | 1197 | |
30667bf3 AM |
1198 | /* Call the generic code to do most of the work. */ |
1199 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1200 | return false; | |
252b5132 | 1201 | |
47d89dba | 1202 | hplink->splt = bfd_get_section_by_name (abfd, ".plt"); |
30667bf3 AM |
1203 | hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
1204 | ||
1205 | hplink->sgot = bfd_get_section_by_name (abfd, ".got"); | |
1206 | hplink->srelgot = bfd_make_section (abfd, ".rela.got"); | |
1207 | if (hplink->srelgot == NULL | |
1208 | || ! bfd_set_section_flags (abfd, hplink->srelgot, | |
1209 | (SEC_ALLOC | |
1210 | | SEC_LOAD | |
1211 | | SEC_HAS_CONTENTS | |
1212 | | SEC_IN_MEMORY | |
1213 | | SEC_LINKER_CREATED | |
1214 | | SEC_READONLY)) | |
1215 | || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2)) | |
1216 | return false; | |
edd21aca | 1217 | |
30667bf3 AM |
1218 | hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
1219 | hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
1220 | ||
1221 | return true; | |
1222 | } | |
1223 | ||
30667bf3 AM |
1224 | /* Look through the relocs for a section during the first phase, and |
1225 | allocate space in the global offset table or procedure linkage | |
1226 | table. At this point we haven't necessarily read all the input | |
1227 | files. */ | |
252b5132 RH |
1228 | |
1229 | static boolean | |
30667bf3 AM |
1230 | elf32_hppa_check_relocs (abfd, info, sec, relocs) |
1231 | bfd *abfd; | |
1232 | struct bfd_link_info *info; | |
1233 | asection *sec; | |
1234 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1235 | { |
30667bf3 AM |
1236 | bfd *dynobj; |
1237 | Elf_Internal_Shdr *symtab_hdr; | |
1238 | struct elf_link_hash_entry **sym_hashes; | |
1239 | bfd_signed_vma *local_got_refcounts; | |
1240 | const Elf_Internal_Rela *rel; | |
1241 | const Elf_Internal_Rela *rel_end; | |
1242 | struct elf32_hppa_link_hash_table *hplink; | |
1243 | asection *sreloc; | |
1244 | asection *stubreloc; | |
1245 | ||
1246 | if (info->relocateable) | |
1247 | return true; | |
1248 | ||
1249 | hplink = hppa_link_hash_table (info); | |
74d1c347 | 1250 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
1251 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1252 | sym_hashes = elf_sym_hashes (abfd); | |
1253 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1254 | sreloc = NULL; | |
1255 | stubreloc = NULL; | |
1256 | ||
1257 | rel_end = relocs + sec->reloc_count; | |
1258 | for (rel = relocs; rel < rel_end; rel++) | |
1259 | { | |
1260 | enum { | |
1261 | NEED_GOT = 1, | |
1262 | NEED_PLT = 2, | |
1263 | NEED_DYNREL = 4, | |
1264 | #if LONG_BRANCH_PIC_IN_SHLIB | |
74d1c347 | 1265 | NEED_STUBREL = 0, /* We won't be needing them in this case. */ |
30667bf3 | 1266 | #else |
74d1c347 | 1267 | NEED_STUBREL = 8, |
30667bf3 | 1268 | #endif |
74d1c347 | 1269 | PLT_PLABEL = 16 |
30667bf3 | 1270 | }; |
edd21aca | 1271 | |
30667bf3 AM |
1272 | unsigned int r_symndx, r_type; |
1273 | struct elf32_hppa_link_hash_entry *h; | |
1274 | int need_entry; | |
252b5132 | 1275 | |
30667bf3 | 1276 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 | 1277 | |
30667bf3 AM |
1278 | if (r_symndx < symtab_hdr->sh_info) |
1279 | h = NULL; | |
1280 | else | |
1281 | h = ((struct elf32_hppa_link_hash_entry *) | |
1282 | sym_hashes[r_symndx - symtab_hdr->sh_info]); | |
252b5132 | 1283 | |
30667bf3 | 1284 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1285 | |
30667bf3 AM |
1286 | switch (r_type) |
1287 | { | |
1288 | case R_PARISC_DLTIND14F: | |
1289 | case R_PARISC_DLTIND14R: | |
1290 | case R_PARISC_DLTIND21L: | |
1291 | /* This symbol requires a global offset table entry. */ | |
1292 | need_entry = NEED_GOT; | |
1293 | ||
1294 | /* Mark this section as containing PIC code. */ | |
1295 | sec->flags |= SEC_HAS_GOT_REF; | |
1296 | break; | |
1297 | ||
1298 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ | |
1299 | case R_PARISC_PLABEL21L: | |
1300 | case R_PARISC_PLABEL32: | |
74d1c347 | 1301 | /* If the addend is non-zero, we break badly. */ |
49e9d0d3 AM |
1302 | if (rel->r_addend != 0) |
1303 | abort (); | |
74d1c347 AM |
1304 | |
1305 | /* If we are creating a shared library, then we need to | |
1306 | create a PLT entry for all PLABELs, because PLABELs with | |
1307 | local symbols may be passed via a pointer to another | |
1308 | object. Additionally, output a dynamic relocation | |
4dc86686 AM |
1309 | pointing to the PLT entry. |
1310 | For executables, the original 32-bit ABI allowed two | |
1311 | different styles of PLABELs (function pointers): For | |
1312 | global functions, the PLABEL word points into the .plt | |
1313 | two bytes past a (function address, gp) pair, and for | |
1314 | local functions the PLABEL points directly at the | |
1315 | function. The magic +2 for the first type allows us to | |
1316 | differentiate between the two. As you can imagine, this | |
1317 | is a real pain when it comes to generating code to call | |
1318 | functions indirectly or to compare function pointers. | |
1319 | We avoid the mess by always pointing a PLABEL into the | |
1320 | .plt, even for local functions. */ | |
74d1c347 | 1321 | need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; |
30667bf3 AM |
1322 | break; |
1323 | ||
1324 | case R_PARISC_PCREL12F: | |
47d89dba AM |
1325 | hplink->has_12bit_branch = 1; |
1326 | /* Fall thru. */ | |
30667bf3 AM |
1327 | case R_PARISC_PCREL17C: |
1328 | case R_PARISC_PCREL17F: | |
47d89dba AM |
1329 | hplink->has_17bit_branch = 1; |
1330 | /* Fall thru. */ | |
30667bf3 | 1331 | case R_PARISC_PCREL22F: |
47d89dba AM |
1332 | /* Function calls might need to go through the .plt, and |
1333 | might require long branch stubs. */ | |
30667bf3 AM |
1334 | if (h == NULL) |
1335 | { | |
1336 | /* We know local syms won't need a .plt entry, and if | |
1337 | they need a long branch stub we can't guarantee that | |
1338 | we can reach the stub. So just flag an error later | |
1339 | if we're doing a shared link and find we need a long | |
1340 | branch stub. */ | |
1341 | continue; | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | /* Global symbols will need a .plt entry if they remain | |
1346 | global, and in most cases won't need a long branch | |
1347 | stub. Unfortunately, we have to cater for the case | |
1348 | where a symbol is forced local by versioning, or due | |
1349 | to symbolic linking, and we lose the .plt entry. */ | |
1350 | need_entry = NEED_PLT | NEED_STUBREL; | |
4dc86686 AM |
1351 | if (h->elf.type == STT_PARISC_MILLI) |
1352 | need_entry = NEED_STUBREL; | |
30667bf3 AM |
1353 | } |
1354 | break; | |
1355 | ||
1356 | case R_PARISC_SEGBASE: /* Used to set segment base. */ | |
c46b7515 | 1357 | case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */ |
30667bf3 AM |
1358 | case R_PARISC_PCREL14F: /* PC relative load/store. */ |
1359 | case R_PARISC_PCREL14R: | |
1360 | case R_PARISC_PCREL17R: /* External branches. */ | |
1361 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */ | |
1362 | /* We don't need to propagate the relocation if linking a | |
1363 | shared object since these are section relative. */ | |
1364 | continue; | |
1365 | ||
1366 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ | |
1367 | case R_PARISC_DPREL14R: | |
1368 | case R_PARISC_DPREL21L: | |
1369 | if (info->shared) | |
1370 | { | |
1371 | (*_bfd_error_handler) | |
1372 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), | |
1373 | bfd_get_filename (abfd), | |
1374 | elf_hppa_howto_table[r_type].name); | |
1375 | bfd_set_error (bfd_error_bad_value); | |
1376 | return false; | |
1377 | } | |
1378 | /* Fall through. */ | |
1379 | ||
1380 | case R_PARISC_DIR17F: /* Used for external branches. */ | |
1381 | case R_PARISC_DIR17R: | |
47d89dba AM |
1382 | case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */ |
1383 | case R_PARISC_DIR14R: | |
30667bf3 AM |
1384 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */ |
1385 | #if 1 | |
1386 | /* Help debug shared library creation. Any of the above | |
1387 | relocs can be used in shared libs, but they may cause | |
1388 | pages to become unshared. */ | |
1389 | if (info->shared) | |
1390 | { | |
1391 | (*_bfd_error_handler) | |
1392 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"), | |
1393 | bfd_get_filename (abfd), | |
1394 | elf_hppa_howto_table[r_type].name); | |
1395 | } | |
1396 | /* Fall through. */ | |
1397 | #endif | |
1398 | ||
c46b7515 | 1399 | case R_PARISC_DIR32: /* .word relocs. */ |
30667bf3 AM |
1400 | /* We may want to output a dynamic relocation later. */ |
1401 | need_entry = NEED_DYNREL; | |
1402 | break; | |
1403 | ||
1404 | /* This relocation describes the C++ object vtable hierarchy. | |
1405 | Reconstruct it for later use during GC. */ | |
1406 | case R_PARISC_GNU_VTINHERIT: | |
1407 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, | |
1408 | &h->elf, rel->r_offset)) | |
1409 | return false; | |
1410 | continue; | |
1411 | ||
1412 | /* This relocation describes which C++ vtable entries are actually | |
1413 | used. Record for later use during GC. */ | |
1414 | case R_PARISC_GNU_VTENTRY: | |
1415 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, | |
36605136 | 1416 | &h->elf, rel->r_addend)) |
30667bf3 AM |
1417 | return false; |
1418 | continue; | |
1419 | ||
1420 | default: | |
1421 | continue; | |
1422 | } | |
1423 | ||
1424 | /* Now carry out our orders. */ | |
1425 | if (need_entry & NEED_GOT) | |
1426 | { | |
1427 | /* Allocate space for a GOT entry, as well as a dynamic | |
25f72752 | 1428 | relocation for this entry. */ |
30667bf3 | 1429 | if (dynobj == NULL) |
74d1c347 | 1430 | hplink->root.dynobj = dynobj = abfd; |
30667bf3 AM |
1431 | |
1432 | if (hplink->sgot == NULL) | |
1433 | { | |
1434 | if (! elf32_hppa_create_dynamic_sections (dynobj, info)) | |
1435 | return false; | |
1436 | } | |
1437 | ||
1438 | if (h != NULL) | |
1439 | { | |
1440 | if (h->elf.got.refcount == -1) | |
1441 | { | |
1442 | h->elf.got.refcount = 1; | |
1443 | ||
1444 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1445 | if (h->elf.dynindx == -1) | |
1446 | { | |
1447 | if (! bfd_elf32_link_record_dynamic_symbol (info, | |
1448 | &h->elf)) | |
1449 | return false; | |
1450 | } | |
30667bf3 AM |
1451 | } |
1452 | else | |
1453 | h->elf.got.refcount += 1; | |
1454 | } | |
1455 | else | |
1456 | { | |
1457 | /* This is a global offset table entry for a local symbol. */ | |
1458 | if (local_got_refcounts == NULL) | |
1459 | { | |
1460 | size_t size; | |
1461 | ||
74d1c347 AM |
1462 | /* Allocate space for local got offsets and local |
1463 | plt offsets. Done this way to save polluting | |
1464 | elf_obj_tdata with another target specific | |
1465 | pointer. */ | |
1466 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma); | |
30667bf3 AM |
1467 | local_got_refcounts = ((bfd_signed_vma *) |
1468 | bfd_alloc (abfd, size)); | |
1469 | if (local_got_refcounts == NULL) | |
1470 | return false; | |
1471 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1472 | memset (local_got_refcounts, -1, size); | |
1473 | } | |
1474 | if (local_got_refcounts[r_symndx] == -1) | |
4dc86686 | 1475 | local_got_refcounts[r_symndx] = 1; |
30667bf3 AM |
1476 | else |
1477 | local_got_refcounts[r_symndx] += 1; | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | if (need_entry & NEED_PLT) | |
1482 | { | |
1483 | /* If we are creating a shared library, and this is a reloc | |
1484 | against a weak symbol or a global symbol in a dynamic | |
1485 | object, then we will be creating an import stub and a | |
1486 | .plt entry for the symbol. Similarly, on a normal link | |
1487 | to symbols defined in a dynamic object we'll need the | |
1488 | import stub and a .plt entry. We don't know yet whether | |
1489 | the symbol is defined or not, so make an entry anyway and | |
1490 | clean up later in adjust_dynamic_symbol. */ | |
1491 | if ((sec->flags & SEC_ALLOC) != 0) | |
1492 | { | |
74d1c347 | 1493 | if (h != NULL) |
30667bf3 | 1494 | { |
74d1c347 AM |
1495 | if (h->elf.plt.refcount == -1) |
1496 | { | |
1497 | h->elf.plt.refcount = 1; | |
1498 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1499 | } | |
1500 | else | |
1501 | h->elf.plt.refcount += 1; | |
1502 | ||
36605136 AM |
1503 | /* If this .plt entry is for a plabel, mark it so |
1504 | that adjust_dynamic_symbol will keep the entry | |
1505 | even if it appears to be local. */ | |
74d1c347 AM |
1506 | if (need_entry & PLT_PLABEL) |
1507 | h->plabel = 1; | |
1508 | } | |
1509 | else if (need_entry & PLT_PLABEL) | |
1510 | { | |
1511 | int indx; | |
1512 | ||
1513 | if (local_got_refcounts == NULL) | |
1514 | { | |
1515 | size_t size; | |
1516 | ||
1517 | /* Allocate space for local got offsets and local | |
1518 | plt offsets. */ | |
1519 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma); | |
1520 | local_got_refcounts = ((bfd_signed_vma *) | |
1521 | bfd_alloc (abfd, size)); | |
1522 | if (local_got_refcounts == NULL) | |
1523 | return false; | |
1524 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1525 | memset (local_got_refcounts, -1, size); | |
1526 | } | |
1527 | indx = r_symndx + symtab_hdr->sh_info; | |
1528 | if (local_got_refcounts[indx] == -1) | |
1529 | local_got_refcounts[indx] = 1; | |
1530 | else | |
1531 | local_got_refcounts[indx] += 1; | |
30667bf3 | 1532 | } |
30667bf3 AM |
1533 | } |
1534 | } | |
1535 | ||
1536 | if (need_entry & (NEED_DYNREL | NEED_STUBREL)) | |
1537 | { | |
1538 | /* Flag this symbol as having a non-got, non-plt reference | |
1539 | so that we generate copy relocs if it turns out to be | |
1540 | dynamic. */ | |
1541 | if (h != NULL) | |
1542 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
1543 | ||
1544 | /* If we are creating a shared library then we need to copy | |
1545 | the reloc into the shared library. However, if we are | |
1546 | linking with -Bsymbolic, we need only copy absolute | |
1547 | relocs or relocs against symbols that are not defined in | |
1548 | an object we are including in the link. PC- or DP- or | |
1549 | DLT-relative relocs against any local sym or global sym | |
1550 | with DEF_REGULAR set, can be discarded. At this point we | |
1551 | have not seen all the input files, so it is possible that | |
1552 | DEF_REGULAR is not set now but will be set later (it is | |
1553 | never cleared). We account for that possibility below by | |
1554 | storing information in the reloc_entries field of the | |
1555 | hash table entry. | |
1556 | ||
1557 | A similar situation to the -Bsymbolic case occurs when | |
1558 | creating shared libraries and symbol visibility changes | |
1559 | render the symbol local. | |
1560 | ||
1561 | As it turns out, all the relocs we will be creating here | |
1562 | are absolute, so we cannot remove them on -Bsymbolic | |
1563 | links or visibility changes anyway. A STUB_REL reloc | |
1564 | is absolute too, as in that case it is the reloc in the | |
1565 | stub we will be creating, rather than copying the PCREL | |
1566 | reloc in the branch. */ | |
1567 | if ((sec->flags & SEC_ALLOC) != 0 | |
1568 | && info->shared | |
1569 | #if RELATIVE_DYNAMIC_RELOCS | |
1570 | && (!info->symbolic | |
1571 | || is_absolute_reloc (r_type) | |
1572 | || (h != NULL | |
1573 | && ((h->elf.elf_link_hash_flags | |
a017a724 | 1574 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) |
30667bf3 AM |
1575 | #endif |
1576 | ) | |
1577 | { | |
1578 | boolean doit; | |
1579 | asection *srel; | |
1580 | ||
1581 | srel = sreloc; | |
1582 | if ((need_entry & NEED_STUBREL)) | |
1583 | srel = stubreloc; | |
1584 | ||
1585 | /* Create a reloc section in dynobj and make room for | |
1586 | this reloc. */ | |
1587 | if (srel == NULL) | |
1588 | { | |
1589 | char *name; | |
1590 | ||
1591 | if (dynobj == NULL) | |
74d1c347 | 1592 | hplink->root.dynobj = dynobj = abfd; |
30667bf3 AM |
1593 | |
1594 | name = bfd_elf_string_from_elf_section | |
1595 | (abfd, | |
1596 | elf_elfheader (abfd)->e_shstrndx, | |
1597 | elf_section_data (sec)->rel_hdr.sh_name); | |
1598 | if (name == NULL) | |
1599 | { | |
1600 | (*_bfd_error_handler) | |
1601 | (_("Could not find relocation section for %s"), | |
1602 | sec->name); | |
1603 | bfd_set_error (bfd_error_bad_value); | |
1604 | return false; | |
1605 | } | |
1606 | ||
1607 | if ((need_entry & NEED_STUBREL)) | |
1608 | { | |
74d1c347 | 1609 | size_t len = strlen (name) + sizeof (STUB_SUFFIX); |
30667bf3 AM |
1610 | char *newname = bfd_malloc (len); |
1611 | ||
1612 | if (newname == NULL) | |
1613 | return false; | |
1614 | strcpy (newname, name); | |
1615 | strcpy (newname + len - sizeof (STUB_SUFFIX), | |
1616 | STUB_SUFFIX); | |
1617 | name = newname; | |
1618 | } | |
1619 | ||
1620 | srel = bfd_get_section_by_name (dynobj, name); | |
1621 | if (srel == NULL) | |
1622 | { | |
1623 | flagword flags; | |
1624 | ||
1625 | srel = bfd_make_section (dynobj, name); | |
1626 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1627 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1628 | if ((sec->flags & SEC_ALLOC) != 0) | |
1629 | flags |= SEC_ALLOC | SEC_LOAD; | |
1630 | if (srel == NULL | |
1631 | || !bfd_set_section_flags (dynobj, srel, flags) | |
1632 | || !bfd_set_section_alignment (dynobj, srel, 2)) | |
1633 | return false; | |
1634 | } | |
1635 | else if ((need_entry & NEED_STUBREL)) | |
1636 | free (name); | |
1637 | ||
1638 | if ((need_entry & NEED_STUBREL)) | |
1639 | stubreloc = srel; | |
1640 | else | |
1641 | sreloc = srel; | |
1642 | } | |
1643 | ||
1644 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1645 | /* If this is a function call, we only need one dynamic | |
1646 | reloc for the stub as all calls to a particular | |
1647 | function will go through the same stub. Actually, a | |
1648 | long branch stub needs two relocations, but we count | |
1649 | on some intelligence on the part of the dynamic | |
1650 | linker. */ | |
1651 | if ((need_entry & NEED_STUBREL)) | |
1652 | { | |
1653 | doit = h->stub_reloc_sec != stubreloc; | |
1654 | h->stub_reloc_sec = stubreloc; | |
1655 | } | |
1656 | else | |
1657 | #endif | |
1658 | doit = 1; | |
1659 | ||
1660 | if (doit) | |
1661 | { | |
1662 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1663 | ||
1664 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
1665 | /* Keep track of relocations we have entered for | |
1666 | this global symbol, so that we can discard them | |
1667 | later if necessary. */ | |
1668 | if (h != NULL | |
1669 | && (0 | |
1670 | #if RELATIVE_DYNAMIC_RELOCS | |
1671 | || ! is_absolute_reloc (rtype) | |
1672 | #endif | |
1673 | || (need_entry & NEED_STUBREL))) | |
1674 | { | |
1675 | struct elf32_hppa_dyn_reloc_entry *p; | |
252b5132 | 1676 | |
30667bf3 AM |
1677 | for (p = h->reloc_entries; p != NULL; p = p->next) |
1678 | if (p->section == srel) | |
1679 | break; | |
edd21aca | 1680 | |
30667bf3 AM |
1681 | if (p == NULL) |
1682 | { | |
1683 | p = ((struct elf32_hppa_dyn_reloc_entry *) | |
1684 | bfd_alloc (dynobj, sizeof *p)); | |
1685 | if (p == NULL) | |
1686 | return false; | |
1687 | p->next = h->reloc_entries; | |
1688 | h->reloc_entries = p; | |
1689 | p->section = srel; | |
1690 | p->count = 0; | |
1691 | } | |
edd21aca | 1692 | |
30667bf3 AM |
1693 | /* NEED_STUBREL and NEED_DYNREL are never both |
1694 | set. Leave the count at zero for the | |
1695 | NEED_STUBREL case as we only ever have one | |
1696 | stub reloc per section per symbol, and this | |
1697 | simplifies code in hppa_discard_copies. */ | |
1698 | if (! (need_entry & NEED_STUBREL)) | |
1699 | ++p->count; | |
1700 | } | |
1701 | #endif | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | } | |
edd21aca AM |
1706 | |
1707 | return true; | |
1708 | } | |
1709 | ||
30667bf3 AM |
1710 | /* Return the section that should be marked against garbage collection |
1711 | for a given relocation. */ | |
1712 | ||
1713 | static asection * | |
1714 | elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) | |
1715 | bfd *abfd; | |
1716 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1717 | Elf_Internal_Rela *rel; | |
1718 | struct elf_link_hash_entry *h; | |
1719 | Elf_Internal_Sym *sym; | |
1720 | { | |
1721 | if (h != NULL) | |
1722 | { | |
1723 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1724 | { | |
1725 | case R_PARISC_GNU_VTINHERIT: | |
1726 | case R_PARISC_GNU_VTENTRY: | |
1727 | break; | |
1728 | ||
1729 | default: | |
1730 | switch (h->root.type) | |
1731 | { | |
1732 | case bfd_link_hash_defined: | |
1733 | case bfd_link_hash_defweak: | |
1734 | return h->root.u.def.section; | |
1735 | ||
1736 | case bfd_link_hash_common: | |
1737 | return h->root.u.c.p->section; | |
1738 | ||
1739 | default: | |
1740 | break; | |
1741 | } | |
1742 | } | |
1743 | } | |
1744 | else | |
1745 | { | |
1746 | if (!(elf_bad_symtab (abfd) | |
1747 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
1748 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
1749 | && sym->st_shndx != SHN_COMMON)) | |
1750 | { | |
1751 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
1752 | } | |
1753 | } | |
1754 | ||
1755 | return NULL; | |
1756 | } | |
1757 | ||
30667bf3 AM |
1758 | /* Update the got and plt entry reference counts for the section being |
1759 | removed. */ | |
edd21aca AM |
1760 | |
1761 | static boolean | |
30667bf3 AM |
1762 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs) |
1763 | bfd *abfd; | |
1764 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1765 | asection *sec; | |
1766 | const Elf_Internal_Rela *relocs; | |
edd21aca | 1767 | { |
30667bf3 AM |
1768 | Elf_Internal_Shdr *symtab_hdr; |
1769 | struct elf_link_hash_entry **sym_hashes; | |
1770 | bfd_signed_vma *local_got_refcounts; | |
74d1c347 | 1771 | bfd_signed_vma *local_plt_refcounts; |
30667bf3 AM |
1772 | const Elf_Internal_Rela *rel, *relend; |
1773 | unsigned long r_symndx; | |
1774 | struct elf_link_hash_entry *h; | |
74d1c347 | 1775 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 | 1776 | bfd *dynobj; |
30667bf3 AM |
1777 | |
1778 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1779 | sym_hashes = elf_sym_hashes (abfd); | |
1780 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
74d1c347 AM |
1781 | local_plt_refcounts = local_got_refcounts; |
1782 | if (local_plt_refcounts != NULL) | |
1783 | local_plt_refcounts += symtab_hdr->sh_info; | |
1784 | hplink = hppa_link_hash_table (info); | |
1785 | dynobj = hplink->root.dynobj; | |
30667bf3 AM |
1786 | if (dynobj == NULL) |
1787 | return true; | |
1788 | ||
30667bf3 AM |
1789 | relend = relocs + sec->reloc_count; |
1790 | for (rel = relocs; rel < relend; rel++) | |
1791 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1792 | { | |
1793 | case R_PARISC_DLTIND14F: | |
1794 | case R_PARISC_DLTIND14R: | |
1795 | case R_PARISC_DLTIND21L: | |
1796 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1797 | if (r_symndx >= symtab_hdr->sh_info) | |
1798 | { | |
1799 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1800 | if (h->got.refcount > 0) | |
4dc86686 | 1801 | h->got.refcount -= 1; |
30667bf3 AM |
1802 | } |
1803 | else if (local_got_refcounts != NULL) | |
1804 | { | |
1805 | if (local_got_refcounts[r_symndx] > 0) | |
4dc86686 | 1806 | local_got_refcounts[r_symndx] -= 1; |
30667bf3 AM |
1807 | } |
1808 | break; | |
edd21aca | 1809 | |
30667bf3 AM |
1810 | case R_PARISC_PCREL12F: |
1811 | case R_PARISC_PCREL17C: | |
1812 | case R_PARISC_PCREL17F: | |
1813 | case R_PARISC_PCREL22F: | |
1814 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1815 | if (r_symndx >= symtab_hdr->sh_info) | |
1816 | { | |
1817 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1818 | if (h->plt.refcount > 0) | |
1819 | h->plt.refcount -= 1; | |
1820 | } | |
1821 | break; | |
edd21aca | 1822 | |
74d1c347 AM |
1823 | case R_PARISC_PLABEL14R: |
1824 | case R_PARISC_PLABEL21L: | |
1825 | case R_PARISC_PLABEL32: | |
1826 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1827 | if (r_symndx >= symtab_hdr->sh_info) | |
1828 | { | |
1829 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1830 | if (h->plt.refcount > 0) | |
1831 | h->plt.refcount -= 1; | |
1832 | } | |
1833 | else if (local_plt_refcounts != NULL) | |
1834 | { | |
1835 | if (local_plt_refcounts[r_symndx] > 0) | |
1836 | local_plt_refcounts[r_symndx] -= 1; | |
1837 | } | |
1838 | break; | |
1839 | ||
30667bf3 AM |
1840 | default: |
1841 | break; | |
1842 | } | |
252b5132 | 1843 | |
252b5132 RH |
1844 | return true; |
1845 | } | |
1846 | ||
74d1c347 AM |
1847 | /* Our own version of hide_symbol, so that we can keep plt entries for |
1848 | plabels. */ | |
1849 | ||
1850 | static void | |
1851 | elf32_hppa_hide_symbol (info, h) | |
1852 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1853 | struct elf_link_hash_entry *h; | |
1854 | { | |
5fba655a L |
1855 | if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) |
1856 | h->dynindx = -1; | |
74d1c347 AM |
1857 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel) |
1858 | { | |
1859 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1860 | h->plt.offset = (bfd_vma) -1; | |
1861 | } | |
1862 | } | |
1863 | ||
4dc86686 AM |
1864 | /* This is the condition under which elf32_hppa_finish_dynamic_symbol |
1865 | will be called from elflink.h. If elflink.h doesn't call our | |
1866 | finish_dynamic_symbol routine, we'll need to do something about | |
1867 | initializing any .plt and .got entries in elf32_hppa_relocate_section. */ | |
1868 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1869 | ((DYN) \ | |
1870 | && ((INFO)->shared \ | |
1871 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1872 | && ((H)->dynindx != -1 \ | |
1873 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1874 | ||
30667bf3 AM |
1875 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1876 | regular object. The current definition is in some section of the | |
1877 | dynamic object, but we're not including those sections. We have to | |
1878 | change the definition to something the rest of the link can | |
1879 | understand. */ | |
252b5132 | 1880 | |
30667bf3 AM |
1881 | static boolean |
1882 | elf32_hppa_adjust_dynamic_symbol (info, h) | |
1883 | struct bfd_link_info *info; | |
1884 | struct elf_link_hash_entry *h; | |
252b5132 | 1885 | { |
30667bf3 AM |
1886 | bfd *dynobj; |
1887 | struct elf32_hppa_link_hash_table *hplink; | |
1888 | asection *s; | |
1889 | ||
30667bf3 | 1890 | hplink = hppa_link_hash_table (info); |
74d1c347 | 1891 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
1892 | |
1893 | /* If this is a function, put it in the procedure linkage table. We | |
1894 | will fill in the contents of the procedure linkage table later, | |
1895 | when we know the address of the .got section. */ | |
1896 | if (h->type == STT_FUNC | |
1897 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1898 | { | |
12cca0d2 AM |
1899 | if (!info->shared |
1900 | && h->plt.refcount > 0 | |
1901 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1902 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) | |
1903 | { | |
1904 | ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1; | |
1905 | } | |
1906 | ||
30667bf3 AM |
1907 | if (h->plt.refcount <= 0 |
1908 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1909 | && h->root.type != bfd_link_hash_defweak | |
74d1c347 | 1910 | && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel |
30667bf3 AM |
1911 | && (!info->shared || info->symbolic))) |
1912 | { | |
1913 | /* The .plt entry is not needed when: | |
1914 | a) Garbage collection has removed all references to the | |
1915 | symbol, or | |
1916 | b) We know for certain the symbol is defined in this | |
74d1c347 AM |
1917 | object, and it's not a weak definition, nor is the symbol |
1918 | used by a plabel relocation. Either this object is the | |
1919 | application or we are doing a shared symbolic link. */ | |
1920 | ||
1921 | /* As a special sop to the hppa ABI, we keep a .plt entry | |
1922 | for functions in sections containing PIC code. */ | |
12cca0d2 AM |
1923 | if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call) |
1924 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; | |
30667bf3 AM |
1925 | else |
1926 | { | |
1927 | h->plt.offset = (bfd_vma) -1; | |
1928 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1929 | return true; | |
1930 | } | |
1931 | } | |
1932 | ||
30667bf3 AM |
1933 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) |
1934 | { | |
1935 | /* Make sure this symbol is output as a dynamic symbol. */ | |
74d1c347 AM |
1936 | if (h->dynindx == -1 |
1937 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
30667bf3 AM |
1938 | { |
1939 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1940 | return false; | |
1941 | } | |
30667bf3 | 1942 | } |
4dc86686 | 1943 | |
30667bf3 AM |
1944 | return true; |
1945 | } | |
edd21aca | 1946 | |
30667bf3 AM |
1947 | /* If this is a weak symbol, and there is a real definition, the |
1948 | processor independent code will have arranged for us to see the | |
1949 | real definition first, and we can just use the same value. */ | |
1950 | if (h->weakdef != NULL) | |
edd21aca | 1951 | { |
49e9d0d3 AM |
1952 | if (h->weakdef->root.type != bfd_link_hash_defined |
1953 | && h->weakdef->root.type != bfd_link_hash_defweak) | |
1954 | abort (); | |
30667bf3 AM |
1955 | h->root.u.def.section = h->weakdef->root.u.def.section; |
1956 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1957 | return true; | |
1958 | } | |
edd21aca | 1959 | |
30667bf3 AM |
1960 | /* This is a reference to a symbol defined by a dynamic object which |
1961 | is not a function. */ | |
1962 | ||
1963 | /* If we are creating a shared library, we must presume that the | |
1964 | only references to the symbol are via the global offset table. | |
1965 | For such cases we need not do anything here; the relocations will | |
1966 | be handled correctly by relocate_section. */ | |
1967 | if (info->shared) | |
1968 | return true; | |
1969 | ||
1970 | /* If there are no references to this symbol that do not use the | |
1971 | GOT, we don't need to generate a copy reloc. */ | |
1972 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
1973 | return true; | |
1974 | ||
1975 | /* We must allocate the symbol in our .dynbss section, which will | |
1976 | become part of the .bss section of the executable. There will be | |
1977 | an entry for this symbol in the .dynsym section. The dynamic | |
1978 | object will contain position independent code, so all references | |
1979 | from the dynamic object to this symbol will go through the global | |
1980 | offset table. The dynamic linker will use the .dynsym entry to | |
1981 | determine the address it must put in the global offset table, so | |
1982 | both the dynamic object and the regular object will refer to the | |
1983 | same memory location for the variable. */ | |
1984 | ||
1985 | s = hplink->sdynbss; | |
1986 | ||
1987 | /* We must generate a COPY reloc to tell the dynamic linker to | |
1988 | copy the initial value out of the dynamic object and into the | |
1989 | runtime process image. We need to remember the offset into the | |
1990 | .rela.bss section we are going to use. */ | |
1991 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1992 | { | |
1993 | asection *srel; | |
1994 | ||
1995 | srel = hplink->srelbss; | |
1996 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1997 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
edd21aca | 1998 | } |
252b5132 | 1999 | |
30667bf3 AM |
2000 | { |
2001 | /* We need to figure out the alignment required for this symbol. I | |
2002 | have no idea how other ELF linkers handle this. */ | |
2003 | unsigned int power_of_two; | |
2004 | ||
2005 | power_of_two = bfd_log2 (h->size); | |
2006 | if (power_of_two > 3) | |
2007 | power_of_two = 3; | |
2008 | ||
2009 | /* Apply the required alignment. */ | |
2010 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
2011 | (bfd_size_type) (1 << power_of_two)); | |
2012 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
2013 | { | |
2014 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
2015 | return false; | |
2016 | } | |
2017 | } | |
2018 | /* Define the symbol as being at this point in the section. */ | |
2019 | h->root.u.def.section = s; | |
2020 | h->root.u.def.value = s->_raw_size; | |
edd21aca | 2021 | |
30667bf3 AM |
2022 | /* Increment the section size to make room for the symbol. */ |
2023 | s->_raw_size += h->size; | |
252b5132 RH |
2024 | |
2025 | return true; | |
2026 | } | |
2027 | ||
30667bf3 AM |
2028 | /* Called via elf_link_hash_traverse to create .plt entries for an |
2029 | application that uses statically linked PIC functions. Similar to | |
2030 | the first part of elf32_hppa_adjust_dynamic_symbol. */ | |
252b5132 | 2031 | |
30667bf3 AM |
2032 | static boolean |
2033 | hppa_handle_PIC_calls (h, inf) | |
2034 | struct elf_link_hash_entry *h; | |
4dc86686 | 2035 | PTR inf ATTRIBUTE_UNUSED; |
252b5132 | 2036 | { |
30667bf3 AM |
2037 | if (! (h->plt.refcount > 0 |
2038 | && (h->root.type == bfd_link_hash_defined | |
2039 | || h->root.type == bfd_link_hash_defweak) | |
2040 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) | |
252b5132 | 2041 | { |
30667bf3 AM |
2042 | h->plt.offset = (bfd_vma) -1; |
2043 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2044 | return true; | |
252b5132 RH |
2045 | } |
2046 | ||
74d1c347 | 2047 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
12cca0d2 | 2048 | ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1; |
30667bf3 | 2049 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; |
edd21aca | 2050 | |
4dc86686 AM |
2051 | return true; |
2052 | } | |
2053 | ||
2054 | /* Allocate space in .plt, .got and associated reloc sections for | |
2055 | global syms. */ | |
2056 | ||
2057 | static boolean | |
2058 | allocate_plt_and_got (h, inf) | |
2059 | struct elf_link_hash_entry *h; | |
2060 | PTR inf; | |
2061 | { | |
2062 | struct bfd_link_info *info; | |
2063 | struct elf32_hppa_link_hash_table *hplink; | |
2064 | asection *s; | |
2065 | ||
30667bf3 | 2066 | info = (struct bfd_link_info *) inf; |
30667bf3 | 2067 | hplink = hppa_link_hash_table (info); |
4dc86686 AM |
2068 | if ((hplink->root.dynamic_sections_created |
2069 | && h->plt.refcount > 0) | |
2070 | || ((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
2071 | { | |
2072 | /* Make an entry in the .plt section. */ | |
2073 | s = hplink->splt; | |
2074 | h->plt.offset = s->_raw_size; | |
2075 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE | |
2076 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel | |
2077 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
2078 | { | |
2079 | /* Add some extra space for the dynamic linker to use. */ | |
2080 | s->_raw_size += PLABEL_PLT_ENTRY_SIZE; | |
2081 | } | |
2082 | else | |
2083 | s->_raw_size += PLT_ENTRY_SIZE; | |
2084 | ||
2085 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call | |
2086 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) | |
2087 | { | |
2088 | /* We also need to make an entry in the .rela.plt section. */ | |
2089 | hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela); | |
2090 | hplink->need_plt_stub = 1; | |
2091 | } | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | h->plt.offset = (bfd_vma) -1; | |
2096 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2097 | } | |
edd21aca | 2098 | |
4dc86686 AM |
2099 | if (h->got.refcount > 0) |
2100 | { | |
2101 | boolean dyn; | |
2102 | ||
2103 | s = hplink->sgot; | |
2104 | h->got.offset = s->_raw_size; | |
2105 | s->_raw_size += GOT_ENTRY_SIZE; | |
2106 | dyn = hplink->root.dynamic_sections_created; | |
2107 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) | |
2108 | hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
2109 | } | |
2110 | else | |
2111 | h->got.offset = (bfd_vma) -1; | |
30667bf3 AM |
2112 | |
2113 | return true; | |
2114 | } | |
2115 | ||
74d1c347 AM |
2116 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
2117 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
2118 | /* This function is called via elf_link_hash_traverse to discard space |
2119 | we allocated for relocs that it turned out we didn't need. */ | |
2120 | ||
2121 | static boolean | |
2122 | hppa_discard_copies (h, inf) | |
2123 | struct elf_link_hash_entry *h; | |
2124 | PTR inf; | |
2125 | { | |
2126 | struct elf32_hppa_dyn_reloc_entry *s; | |
2127 | struct elf32_hppa_link_hash_entry *eh; | |
2128 | struct bfd_link_info *info; | |
2129 | ||
2130 | eh = (struct elf32_hppa_link_hash_entry *) h; | |
2131 | info = (struct bfd_link_info *) inf; | |
2132 | ||
74d1c347 | 2133 | #if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT |
30667bf3 AM |
2134 | /* Handle the stub reloc case. If we have a plt entry for the |
2135 | function, we won't be needing long branch stubs. s->count will | |
2136 | only be zero for stub relocs, which provides a handy way of | |
2137 | flagging these relocs, and means we need do nothing special for | |
2138 | the forced local and symbolic link case. */ | |
2139 | if (eh->stub_reloc_sec != NULL | |
2140 | && eh->elf.plt.offset != (bfd_vma) -1) | |
2141 | { | |
2142 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2143 | if (s->count == 0) | |
2144 | s->section->_raw_size -= sizeof (Elf32_External_Rela); | |
2145 | } | |
2146 | #endif | |
2147 | ||
74d1c347 | 2148 | #if RELATIVE_DYNAMIC_RELOCS |
30667bf3 AM |
2149 | /* If a symbol has been forced local or we have found a regular |
2150 | definition for the symbolic link case, then we won't be needing | |
2151 | any relocs. */ | |
30667bf3 AM |
2152 | if (eh->elf.dynindx == -1 |
2153 | || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
a017a724 | 2154 | && !is_absolute_reloc (r_type) |
30667bf3 AM |
2155 | && info->symbolic)) |
2156 | { | |
2157 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2158 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); | |
2159 | } | |
2160 | #endif | |
2161 | ||
2162 | return true; | |
2163 | } | |
2164 | #endif | |
2165 | ||
d5c73c2f AM |
2166 | /* This function is called via elf_link_hash_traverse to force |
2167 | millicode symbols local so they do not end up as globals in the | |
2168 | dynamic symbol table. We ought to be able to do this in | |
2169 | adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called | |
2170 | for all dynamic symbols. Arguably, this is a bug in | |
2171 | elf_adjust_dynamic_symbol. */ | |
2172 | ||
2173 | static boolean | |
2174 | clobber_millicode_symbols (h, info) | |
2175 | struct elf_link_hash_entry *h; | |
2176 | struct bfd_link_info *info; | |
2177 | { | |
8dea1268 AM |
2178 | /* We only want to remove these from the dynamic symbol table. |
2179 | Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */ | |
d5c73c2f | 2180 | if (h->type == STT_PARISC_MILLI) |
e0522e89 AM |
2181 | { |
2182 | unsigned short oldflags = h->elf_link_hash_flags; | |
2183 | h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL; | |
2184 | elf32_hppa_hide_symbol (info, h); | |
2185 | h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL; | |
2186 | h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL; | |
2187 | } | |
d5c73c2f AM |
2188 | return true; |
2189 | } | |
2190 | ||
30667bf3 AM |
2191 | /* Set the sizes of the dynamic sections. */ |
2192 | ||
2193 | static boolean | |
2194 | elf32_hppa_size_dynamic_sections (output_bfd, info) | |
2195 | bfd *output_bfd; | |
2196 | struct bfd_link_info *info; | |
2197 | { | |
2198 | struct elf32_hppa_link_hash_table *hplink; | |
2199 | bfd *dynobj; | |
2200 | asection *s; | |
2201 | boolean relocs; | |
2202 | boolean reltext; | |
2203 | ||
2204 | hplink = hppa_link_hash_table (info); | |
74d1c347 | 2205 | dynobj = hplink->root.dynobj; |
49e9d0d3 AM |
2206 | if (dynobj == NULL) |
2207 | abort (); | |
30667bf3 | 2208 | |
74d1c347 | 2209 | if (hplink->root.dynamic_sections_created) |
30667bf3 | 2210 | { |
74d1c347 AM |
2211 | bfd *i; |
2212 | ||
30667bf3 AM |
2213 | /* Set the contents of the .interp section to the interpreter. */ |
2214 | if (! info->shared) | |
2215 | { | |
2216 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
49e9d0d3 AM |
2217 | if (s == NULL) |
2218 | abort (); | |
30667bf3 AM |
2219 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
2220 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2221 | } | |
74d1c347 | 2222 | |
d5c73c2f AM |
2223 | /* Force millicode symbols local. */ |
2224 | elf_link_hash_traverse (&hplink->root, | |
2225 | clobber_millicode_symbols, | |
2226 | info); | |
2227 | ||
4dc86686 | 2228 | /* Set up .got and .plt offsets for local syms. */ |
74d1c347 AM |
2229 | for (i = info->input_bfds; i; i = i->link_next) |
2230 | { | |
4dc86686 AM |
2231 | bfd_signed_vma *local_got; |
2232 | bfd_signed_vma *end_local_got; | |
74d1c347 AM |
2233 | bfd_signed_vma *local_plt; |
2234 | bfd_signed_vma *end_local_plt; | |
2235 | bfd_size_type locsymcount; | |
2236 | Elf_Internal_Shdr *symtab_hdr; | |
4dc86686 | 2237 | asection *srel; |
74d1c347 | 2238 | |
4dc86686 AM |
2239 | if (bfd_get_flavour (i) != bfd_target_elf_flavour) |
2240 | continue; | |
2241 | ||
2242 | local_got = elf_local_got_refcounts (i); | |
2243 | if (!local_got) | |
74d1c347 AM |
2244 | continue; |
2245 | ||
2246 | symtab_hdr = &elf_tdata (i)->symtab_hdr; | |
2247 | locsymcount = symtab_hdr->sh_info; | |
4dc86686 AM |
2248 | end_local_got = local_got + locsymcount; |
2249 | s = hplink->sgot; | |
2250 | srel = hplink->srelgot; | |
2251 | for (; local_got < end_local_got; ++local_got) | |
2252 | { | |
2253 | if (*local_got > 0) | |
2254 | { | |
2255 | *local_got = s->_raw_size; | |
2256 | s->_raw_size += GOT_ENTRY_SIZE; | |
2257 | if (info->shared) | |
2258 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
2259 | } | |
2260 | else | |
2261 | *local_got = (bfd_vma) -1; | |
2262 | } | |
74d1c347 | 2263 | |
4dc86686 AM |
2264 | local_plt = end_local_got; |
2265 | end_local_plt = local_plt + locsymcount; | |
2266 | s = hplink->splt; | |
2267 | srel = hplink->srelplt; | |
74d1c347 AM |
2268 | for (; local_plt < end_local_plt; ++local_plt) |
2269 | { | |
2270 | if (*local_plt > 0) | |
2271 | { | |
74d1c347 AM |
2272 | *local_plt = s->_raw_size; |
2273 | s->_raw_size += PLT_ENTRY_SIZE; | |
2274 | if (info->shared) | |
4dc86686 | 2275 | srel->_raw_size += sizeof (Elf32_External_Rela); |
74d1c347 AM |
2276 | } |
2277 | else | |
2278 | *local_plt = (bfd_vma) -1; | |
2279 | } | |
2280 | } | |
30667bf3 AM |
2281 | } |
2282 | else | |
2283 | { | |
2284 | /* Run through the function symbols, looking for any that are | |
2285 | PIC, and allocate space for the necessary .plt entries so | |
2286 | that %r19 will be set up. */ | |
2287 | if (! info->shared) | |
2288 | elf_link_hash_traverse (&hplink->root, | |
2289 | hppa_handle_PIC_calls, | |
2290 | info); | |
30667bf3 AM |
2291 | } |
2292 | ||
4dc86686 AM |
2293 | /* Allocate global sym .plt and .got entries. */ |
2294 | elf_link_hash_traverse (&hplink->root, | |
2295 | allocate_plt_and_got, | |
2296 | info); | |
2297 | ||
74d1c347 AM |
2298 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
2299 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
2300 | /* If this is a -Bsymbolic shared link, then we need to discard all |
2301 | relocs against symbols defined in a regular object. We also need | |
2302 | to lose relocs we've allocated for long branch stubs if we know | |
2303 | we won't be generating a stub. */ | |
2304 | if (info->shared) | |
2305 | elf_link_hash_traverse (&hplink->root, | |
2306 | hppa_discard_copies, | |
2307 | info); | |
2308 | #endif | |
2309 | ||
2310 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2311 | determined the sizes of the various dynamic sections. Allocate | |
2312 | memory for them. */ | |
2313 | relocs = false; | |
2314 | reltext = false; | |
2315 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2316 | { | |
2317 | const char *name; | |
2318 | ||
2319 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2320 | continue; | |
2321 | ||
2322 | /* It's OK to base decisions on the section name, because none | |
2323 | of the dynobj section names depend upon the input files. */ | |
2324 | name = bfd_get_section_name (dynobj, s); | |
2325 | ||
2326 | if (strncmp (name, ".rela", 5) == 0) | |
2327 | { | |
2328 | if (s->_raw_size != 0) | |
2329 | { | |
2330 | asection *target; | |
47d89dba | 2331 | const char *outname; |
30667bf3 AM |
2332 | |
2333 | /* Remember whether there are any reloc sections other | |
2334 | than .rela.plt. */ | |
2335 | if (strcmp (name+5, ".plt") != 0) | |
47d89dba AM |
2336 | relocs = true; |
2337 | ||
2338 | /* If this relocation section applies to a read only | |
2339 | section, then we probably need a DT_TEXTREL entry. */ | |
2340 | outname = bfd_get_section_name (output_bfd, | |
2341 | s->output_section); | |
2342 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
2343 | if (target != NULL | |
2344 | && (target->flags & SEC_READONLY) != 0 | |
2345 | && (target->flags & SEC_ALLOC) != 0) | |
2346 | reltext = true; | |
30667bf3 AM |
2347 | |
2348 | /* We use the reloc_count field as a counter if we need | |
2349 | to copy relocs into the output file. */ | |
2350 | s->reloc_count = 0; | |
2351 | } | |
2352 | } | |
2353 | else if (strcmp (name, ".plt") == 0) | |
47d89dba AM |
2354 | { |
2355 | if (hplink->need_plt_stub) | |
2356 | { | |
2357 | /* Make space for the plt stub at the end of the .plt | |
2358 | section. We want this stub right at the end, up | |
2359 | against the .got section. */ | |
2360 | int gotalign = bfd_section_alignment (dynobj, hplink->sgot); | |
2361 | int pltalign = bfd_section_alignment (dynobj, s); | |
2362 | bfd_size_type mask; | |
2363 | ||
2364 | if (gotalign > pltalign) | |
2365 | bfd_set_section_alignment (dynobj, s, gotalign); | |
2366 | mask = ((bfd_size_type) 1 << gotalign) - 1; | |
2367 | s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask; | |
2368 | } | |
2369 | } | |
30667bf3 AM |
2370 | else if (strcmp (name, ".got") == 0) |
2371 | ; | |
2372 | else | |
2373 | { | |
2374 | /* It's not one of our sections, so don't allocate space. */ | |
2375 | continue; | |
2376 | } | |
2377 | ||
2378 | if (s->_raw_size == 0) | |
2379 | { | |
2380 | /* If we don't need this section, strip it from the | |
2381 | output file. This is mostly to handle .rela.bss and | |
2382 | .rela.plt. We must create both sections in | |
2383 | create_dynamic_sections, because they must be created | |
2384 | before the linker maps input sections to output | |
2385 | sections. The linker does that before | |
2386 | adjust_dynamic_symbol is called, and it is that | |
2387 | function which decides whether anything needs to go | |
2388 | into these sections. */ | |
2389 | _bfd_strip_section_from_output (info, s); | |
2390 | continue; | |
2391 | } | |
2392 | ||
2393 | /* Allocate memory for the section contents. Zero it, because | |
2394 | we may not fill in all the reloc sections. */ | |
2395 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
2396 | if (s->contents == NULL && s->_raw_size != 0) | |
2397 | return false; | |
2398 | } | |
2399 | ||
74d1c347 | 2400 | if (hplink->root.dynamic_sections_created) |
30667bf3 AM |
2401 | { |
2402 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It | |
2403 | actually has nothing to do with the PLT, it is how we | |
2404 | communicate the LTP value of a load module to the dynamic | |
2405 | linker. */ | |
2406 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
2407 | return false; | |
2408 | ||
2409 | /* Add some entries to the .dynamic section. We fill in the | |
2410 | values later, in elf32_hppa_finish_dynamic_sections, but we | |
2411 | must add the entries now so that we get the correct size for | |
2412 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2413 | dynamic linker and used by the debugger. */ | |
2414 | if (! info->shared) | |
2415 | { | |
2416 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2417 | return false; | |
2418 | } | |
2419 | ||
2420 | if (hplink->srelplt->_raw_size != 0) | |
2421 | { | |
2422 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2423 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2424 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2425 | return false; | |
2426 | } | |
2427 | ||
2428 | if (relocs) | |
2429 | { | |
2430 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
2431 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
2432 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
2433 | sizeof (Elf32_External_Rela))) | |
2434 | return false; | |
2435 | } | |
2436 | ||
2437 | if (reltext) | |
2438 | { | |
2439 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2440 | return false; | |
2441 | info->flags |= DF_TEXTREL; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | return true; | |
2446 | } | |
2447 | ||
30667bf3 AM |
2448 | /* External entry points for sizing and building linker stubs. */ |
2449 | ||
2450 | /* Determine and set the size of the stub section for a final link. | |
2451 | ||
2452 | The basic idea here is to examine all the relocations looking for | |
2453 | PC-relative calls to a target that is unreachable with a "bl" | |
2454 | instruction. */ | |
2455 | ||
2456 | boolean | |
47d89dba | 2457 | elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size, |
30667bf3 | 2458 | add_stub_section, layout_sections_again) |
25f72752 | 2459 | bfd *output_bfd; |
30667bf3 | 2460 | bfd *stub_bfd; |
30667bf3 | 2461 | struct bfd_link_info *info; |
25f72752 | 2462 | boolean multi_subspace; |
47d89dba | 2463 | bfd_signed_vma group_size; |
30667bf3 AM |
2464 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); |
2465 | void (*layout_sections_again) PARAMS ((void)); | |
2466 | { | |
2467 | bfd *input_bfd; | |
2468 | asection *section; | |
25f72752 | 2469 | asection **input_list, **list; |
30667bf3 | 2470 | Elf_Internal_Sym *local_syms, **all_local_syms; |
25f72752 AM |
2471 | unsigned int bfd_indx, bfd_count; |
2472 | int top_id, top_index; | |
30667bf3 | 2473 | struct elf32_hppa_link_hash_table *hplink; |
47d89dba AM |
2474 | bfd_size_type stub_group_size; |
2475 | boolean stubs_always_before_branch; | |
30667bf3 | 2476 | boolean stub_changed = 0; |
25f72752 | 2477 | boolean ret = 0; |
30667bf3 AM |
2478 | |
2479 | hplink = hppa_link_hash_table (info); | |
2480 | ||
2481 | /* Stash our params away. */ | |
2482 | hplink->stub_bfd = stub_bfd; | |
2483 | hplink->multi_subspace = multi_subspace; | |
2484 | hplink->add_stub_section = add_stub_section; | |
2485 | hplink->layout_sections_again = layout_sections_again; | |
47d89dba AM |
2486 | stubs_always_before_branch = group_size < 0; |
2487 | if (group_size < 0) | |
2488 | stub_group_size = -group_size; | |
2489 | else | |
2490 | stub_group_size = group_size; | |
2491 | if (stub_group_size == 1) | |
2492 | { | |
2493 | /* Default values. */ | |
2494 | stub_group_size = 8000000; | |
2495 | if (hplink->has_17bit_branch || hplink->multi_subspace) | |
2496 | stub_group_size = 250000; | |
2497 | if (hplink->has_12bit_branch) | |
2498 | stub_group_size = 7812; | |
2499 | } | |
30667bf3 | 2500 | |
1badb539 AM |
2501 | /* Count the number of input BFDs and find the top input section id. */ |
2502 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
30667bf3 AM |
2503 | input_bfd != NULL; |
2504 | input_bfd = input_bfd->link_next) | |
2505 | { | |
2506 | bfd_count += 1; | |
25f72752 AM |
2507 | for (section = input_bfd->sections; |
2508 | section != NULL; | |
2509 | section = section->next) | |
2510 | { | |
2511 | if (top_id < section->id) | |
2512 | top_id = section->id; | |
2513 | } | |
30667bf3 AM |
2514 | } |
2515 | ||
25f72752 AM |
2516 | hplink->stub_group |
2517 | = (struct map_stub *) bfd_zmalloc (sizeof (struct map_stub) * (top_id + 1)); | |
2518 | if (hplink->stub_group == NULL) | |
30667bf3 AM |
2519 | return false; |
2520 | ||
1badb539 AM |
2521 | /* Make a list of input sections for each output section included in |
2522 | the link. | |
2523 | ||
2524 | We can't use output_bfd->section_count here to find the top output | |
2525 | section index as some sections may have been removed, and | |
2526 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
2527 | for (section = output_bfd->sections, top_index = 0; | |
2528 | section != NULL; | |
2529 | section = section->next) | |
2530 | { | |
2531 | if (top_index < section->index) | |
2532 | top_index = section->index; | |
2533 | } | |
2534 | ||
25f72752 | 2535 | input_list |
1badb539 | 2536 | = (asection **) bfd_malloc (sizeof (asection *) * (top_index + 1)); |
25f72752 AM |
2537 | if (input_list == NULL) |
2538 | return false; | |
2539 | ||
1badb539 AM |
2540 | /* For sections we aren't interested in, mark their entries with a |
2541 | value we can check later. */ | |
2542 | list = input_list + top_index; | |
2543 | do | |
2544 | *list = bfd_abs_section_ptr; | |
2545 | while (list-- != input_list); | |
2546 | ||
2547 | for (section = output_bfd->sections; | |
2548 | section != NULL; | |
2549 | section = section->next) | |
2550 | { | |
47d89dba | 2551 | if ((section->flags & SEC_CODE) != 0) |
1badb539 AM |
2552 | input_list[section->index] = NULL; |
2553 | } | |
2554 | ||
2555 | /* Now actually build the lists. */ | |
25f72752 AM |
2556 | for (input_bfd = info->input_bfds; |
2557 | input_bfd != NULL; | |
2558 | input_bfd = input_bfd->link_next) | |
2559 | { | |
2560 | for (section = input_bfd->sections; | |
2561 | section != NULL; | |
2562 | section = section->next) | |
2563 | { | |
2564 | if (section->output_section != NULL | |
1badb539 AM |
2565 | && section->output_section->owner == output_bfd |
2566 | && section->output_section->index <= top_index) | |
25f72752 AM |
2567 | { |
2568 | list = input_list + section->output_section->index; | |
1badb539 AM |
2569 | if (*list != bfd_abs_section_ptr) |
2570 | { | |
2571 | /* Steal the link_sec pointer for our list. */ | |
25f72752 | 2572 | #define PREV_SEC(sec) (hplink->stub_group[(sec)->id].link_sec) |
1badb539 AM |
2573 | /* This happens to make the list in reverse order, |
2574 | which is what we want. */ | |
2575 | PREV_SEC (section) = *list; | |
2576 | *list = section; | |
2577 | } | |
25f72752 AM |
2578 | } |
2579 | } | |
2580 | } | |
2581 | ||
2582 | /* See whether we can group stub sections together. Grouping stub | |
2583 | sections may result in fewer stubs. More importantly, we need to | |
2584 | put all .init* and .fini* stubs at the beginning of the .init or | |
2585 | .fini output sections respectively, because glibc splits the | |
2586 | _init and _fini functions into multiple parts. Putting a stub in | |
2587 | the middle of a function is not a good idea. */ | |
a017a724 | 2588 | list = input_list + top_index; |
1badb539 | 2589 | do |
25f72752 AM |
2590 | { |
2591 | asection *tail = *list; | |
1badb539 AM |
2592 | if (tail == bfd_abs_section_ptr) |
2593 | continue; | |
25f72752 AM |
2594 | while (tail != NULL) |
2595 | { | |
2596 | asection *curr; | |
2597 | asection *prev; | |
2598 | bfd_size_type total; | |
2599 | ||
2600 | curr = tail; | |
2601 | if (tail->_cooked_size) | |
2602 | total = tail->_cooked_size; | |
2603 | else | |
2604 | total = tail->_raw_size; | |
2605 | while ((prev = PREV_SEC (curr)) != NULL | |
2606 | && ((total += curr->output_offset - prev->output_offset) | |
47d89dba | 2607 | < stub_group_size)) |
25f72752 AM |
2608 | curr = prev; |
2609 | ||
2610 | /* OK, the size from the start of CURR to the end is less | |
2611 | than 250000 bytes and thus can be handled by one stub | |
2612 | section. (or the tail section is itself larger than | |
2613 | 250000 bytes, in which case we may be toast.) | |
2614 | We should really be keeping track of the total size of | |
2615 | stubs added here, as stubs contribute to the final output | |
2616 | section size. That's a little tricky, and this way will | |
2617 | only break if stubs added total more than 12144 bytes, or | |
2618 | 1518 long branch stubs. It seems unlikely for more than | |
2619 | 1518 different functions to be called, especially from | |
2620 | code only 250000 bytes long. */ | |
2621 | do | |
2622 | { | |
2623 | prev = PREV_SEC (tail); | |
2624 | /* Set up this stub group. */ | |
2625 | hplink->stub_group[tail->id].link_sec = curr; | |
2626 | } | |
2627 | while (tail != curr && (tail = prev) != NULL); | |
2628 | ||
2629 | /* But wait, there's more! Input sections up to 250000 | |
2630 | bytes before the stub section can be handled by it too. */ | |
47d89dba | 2631 | if (!stubs_always_before_branch) |
25f72752 | 2632 | { |
47d89dba AM |
2633 | total = 0; |
2634 | while (prev != NULL | |
2635 | && ((total += tail->output_offset - prev->output_offset) | |
2636 | < stub_group_size)) | |
2637 | { | |
2638 | tail = prev; | |
2639 | prev = PREV_SEC (tail); | |
2640 | hplink->stub_group[tail->id].link_sec = curr; | |
2641 | } | |
25f72752 AM |
2642 | } |
2643 | tail = prev; | |
2644 | } | |
2645 | } | |
1badb539 | 2646 | while (list-- != input_list); |
25f72752 | 2647 | free (input_list); |
1badb539 | 2648 | #undef PREV_SEC |
30667bf3 AM |
2649 | |
2650 | /* We want to read in symbol extension records only once. To do this | |
2651 | we need to read in the local symbols in parallel and save them for | |
2652 | later use; so hold pointers to the local symbols in an array. */ | |
2653 | all_local_syms | |
2654 | = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *) | |
2655 | * bfd_count); | |
2656 | if (all_local_syms == NULL) | |
25f72752 | 2657 | return false; |
30667bf3 AM |
2658 | |
2659 | /* Walk over all the input BFDs, swapping in local symbols. | |
2660 | If we are creating a shared library, create hash entries for the | |
2661 | export stubs. */ | |
25f72752 | 2662 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
30667bf3 | 2663 | input_bfd != NULL; |
25f72752 | 2664 | input_bfd = input_bfd->link_next, bfd_indx++) |
30667bf3 AM |
2665 | { |
2666 | Elf_Internal_Shdr *symtab_hdr; | |
2667 | Elf_Internal_Sym *isym; | |
25f72752 | 2668 | Elf32_External_Sym *ext_syms, *esym, *end_sy; |
edd21aca | 2669 | |
252b5132 RH |
2670 | /* We'll need the symbol table in a second. */ |
2671 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2672 | if (symtab_hdr->sh_info == 0) | |
2673 | continue; | |
2674 | ||
edd21aca AM |
2675 | /* We need an array of the local symbols attached to the input bfd. |
2676 | Unfortunately, we're going to have to read & swap them in. */ | |
2677 | local_syms = (Elf_Internal_Sym *) | |
2678 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym)); | |
2679 | if (local_syms == NULL) | |
2680 | { | |
2681 | goto error_ret_free_local; | |
2682 | } | |
25f72752 | 2683 | all_local_syms[bfd_indx] = local_syms; |
edd21aca AM |
2684 | ext_syms = (Elf32_External_Sym *) |
2685 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)); | |
2686 | if (ext_syms == NULL) | |
2687 | { | |
2688 | goto error_ret_free_local; | |
2689 | } | |
2690 | ||
2691 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
30667bf3 | 2692 | || (bfd_read (ext_syms, 1, |
edd21aca AM |
2693 | (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)), |
2694 | input_bfd) | |
2695 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) | |
2696 | { | |
2697 | free (ext_syms); | |
2698 | goto error_ret_free_local; | |
2699 | } | |
2700 | ||
2701 | /* Swap the local symbols in. */ | |
2702 | isym = local_syms; | |
2703 | esym = ext_syms; | |
25f72752 | 2704 | for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++) |
edd21aca AM |
2705 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym); |
2706 | ||
2707 | /* Now we can free the external symbols. */ | |
2708 | free (ext_syms); | |
edd21aca | 2709 | |
d5c73c2f | 2710 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
25f72752 AM |
2711 | /* If this is a shared link, find all the stub reloc sections. */ |
2712 | if (info->shared) | |
2713 | for (section = input_bfd->sections; | |
2714 | section != NULL; | |
2715 | section = section->next) | |
2716 | { | |
2717 | char *name; | |
2718 | asection *reloc_sec; | |
d5c73c2f | 2719 | |
25f72752 AM |
2720 | name = bfd_malloc (strlen (section->name) |
2721 | + sizeof STUB_SUFFIX | |
2722 | + 5); | |
2723 | if (name == NULL) | |
2724 | return false; | |
2725 | sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX); | |
2726 | reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name); | |
2727 | hplink->stub_group[section->id].reloc_sec = reloc_sec; | |
2728 | free (name); | |
2729 | } | |
d5c73c2f | 2730 | #endif |
d5c73c2f | 2731 | |
30667bf3 AM |
2732 | if (info->shared && hplink->multi_subspace) |
2733 | { | |
25f72752 AM |
2734 | struct elf_link_hash_entry **sym_hashes; |
2735 | struct elf_link_hash_entry **end_hashes; | |
30667bf3 AM |
2736 | unsigned int symcount; |
2737 | ||
2738 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2739 | - symtab_hdr->sh_info); | |
25f72752 AM |
2740 | sym_hashes = elf_sym_hashes (input_bfd); |
2741 | end_hashes = sym_hashes + symcount; | |
30667bf3 AM |
2742 | |
2743 | /* Look through the global syms for functions; We need to | |
2744 | build export stubs for all globally visible functions. */ | |
25f72752 | 2745 | for (; sym_hashes < end_hashes; sym_hashes++) |
30667bf3 AM |
2746 | { |
2747 | struct elf32_hppa_link_hash_entry *hash; | |
2748 | ||
25f72752 | 2749 | hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes; |
30667bf3 AM |
2750 | |
2751 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2752 | || hash->elf.root.type == bfd_link_hash_warning) | |
2753 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2754 | hash->elf.root.u.i.link); | |
2755 | ||
2756 | /* At this point in the link, undefined syms have been | |
2757 | resolved, so we need to check that the symbol was | |
2758 | defined in this BFD. */ | |
2759 | if ((hash->elf.root.type == bfd_link_hash_defined | |
2760 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2761 | && hash->elf.type == STT_FUNC | |
2762 | && hash->elf.root.u.def.section->output_section != NULL | |
25f72752 AM |
2763 | && (hash->elf.root.u.def.section->output_section->owner |
2764 | == output_bfd) | |
30667bf3 AM |
2765 | && hash->elf.root.u.def.section->owner == input_bfd |
2766 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
2767 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) | |
2768 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT) | |
2769 | { | |
2770 | asection *sec; | |
2771 | const char *stub_name; | |
2772 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2773 | ||
2774 | sec = hash->elf.root.u.def.section; | |
2775 | stub_name = hash->elf.root.root.string; | |
2776 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2777 | stub_name, | |
2778 | false, false); | |
2779 | if (stub_entry == NULL) | |
2780 | { | |
25f72752 | 2781 | stub_entry = hppa_add_stub (stub_name, sec, hplink); |
30667bf3 AM |
2782 | if (!stub_entry) |
2783 | goto error_ret_free_local; | |
2784 | ||
2785 | stub_entry->target_value = hash->elf.root.u.def.value; | |
2786 | stub_entry->target_section = hash->elf.root.u.def.section; | |
2787 | stub_entry->stub_type = hppa_stub_export; | |
2788 | stub_entry->h = hash; | |
2789 | stub_changed = 1; | |
2790 | } | |
2791 | else | |
2792 | { | |
2793 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"), | |
2794 | bfd_get_filename (input_bfd), | |
2795 | stub_name); | |
2796 | } | |
2797 | } | |
2798 | } | |
30667bf3 AM |
2799 | } |
2800 | } | |
edd21aca AM |
2801 | |
2802 | while (1) | |
2803 | { | |
30667bf3 AM |
2804 | asection *stub_sec; |
2805 | ||
25f72752 | 2806 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
30667bf3 | 2807 | input_bfd != NULL; |
25f72752 | 2808 | input_bfd = input_bfd->link_next, bfd_indx++) |
30667bf3 AM |
2809 | { |
2810 | Elf_Internal_Shdr *symtab_hdr; | |
2811 | ||
2812 | /* We'll need the symbol table in a second. */ | |
2813 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2814 | if (symtab_hdr->sh_info == 0) | |
2815 | continue; | |
2816 | ||
25f72752 | 2817 | local_syms = all_local_syms[bfd_indx]; |
30667bf3 AM |
2818 | |
2819 | /* Walk over each section attached to the input bfd. */ | |
2820 | for (section = input_bfd->sections; | |
2821 | section != NULL; | |
25f72752 | 2822 | section = section->next) |
30667bf3 AM |
2823 | { |
2824 | Elf_Internal_Shdr *input_rel_hdr; | |
2825 | Elf32_External_Rela *external_relocs, *erelaend, *erela; | |
2826 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2827 | ||
2828 | /* If there aren't any relocs, then there's nothing more | |
2829 | to do. */ | |
2830 | if ((section->flags & SEC_RELOC) == 0 | |
2831 | || section->reloc_count == 0) | |
2832 | continue; | |
2833 | ||
25f72752 AM |
2834 | /* If this section is a link-once section that will be |
2835 | discarded, then don't create any stubs. */ | |
2836 | if (section->output_section == NULL | |
2837 | || section->output_section->owner != output_bfd) | |
2838 | continue; | |
2839 | ||
30667bf3 AM |
2840 | /* Allocate space for the external relocations. */ |
2841 | external_relocs | |
2842 | = ((Elf32_External_Rela *) | |
2843 | bfd_malloc (section->reloc_count | |
2844 | * sizeof (Elf32_External_Rela))); | |
2845 | if (external_relocs == NULL) | |
2846 | { | |
2847 | goto error_ret_free_local; | |
2848 | } | |
2849 | ||
2850 | /* Likewise for the internal relocations. */ | |
2851 | internal_relocs = ((Elf_Internal_Rela *) | |
2852 | bfd_malloc (section->reloc_count | |
2853 | * sizeof (Elf_Internal_Rela))); | |
2854 | if (internal_relocs == NULL) | |
2855 | { | |
2856 | free (external_relocs); | |
2857 | goto error_ret_free_local; | |
2858 | } | |
2859 | ||
2860 | /* Read in the external relocs. */ | |
2861 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
2862 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
2863 | || bfd_read (external_relocs, 1, | |
2864 | input_rel_hdr->sh_size, | |
2865 | input_bfd) != input_rel_hdr->sh_size) | |
2866 | { | |
2867 | free (external_relocs); | |
2868 | error_ret_free_internal: | |
2869 | free (internal_relocs); | |
2870 | goto error_ret_free_local; | |
2871 | } | |
2872 | ||
2873 | /* Swap in the relocs. */ | |
2874 | erela = external_relocs; | |
2875 | erelaend = erela + section->reloc_count; | |
2876 | irela = internal_relocs; | |
2877 | for (; erela < erelaend; erela++, irela++) | |
2878 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); | |
2879 | ||
2880 | /* We're done with the external relocs, free them. */ | |
2881 | free (external_relocs); | |
2882 | ||
2883 | /* Now examine each relocation. */ | |
2884 | irela = internal_relocs; | |
2885 | irelaend = irela + section->reloc_count; | |
2886 | for (; irela < irelaend; irela++) | |
2887 | { | |
2888 | unsigned int r_type, r_indx; | |
2889 | enum elf32_hppa_stub_type stub_type; | |
2890 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2891 | asection *sym_sec; | |
2892 | bfd_vma sym_value; | |
2893 | bfd_vma destination; | |
2894 | struct elf32_hppa_link_hash_entry *hash; | |
2895 | char *stub_name; | |
25f72752 | 2896 | const asection *id_sec; |
30667bf3 AM |
2897 | |
2898 | r_type = ELF32_R_TYPE (irela->r_info); | |
2899 | r_indx = ELF32_R_SYM (irela->r_info); | |
2900 | ||
2901 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
2902 | { | |
2903 | bfd_set_error (bfd_error_bad_value); | |
2904 | goto error_ret_free_internal; | |
2905 | } | |
2906 | ||
2907 | /* Only look for stubs on call instructions. */ | |
2908 | if (r_type != (unsigned int) R_PARISC_PCREL12F | |
2909 | && r_type != (unsigned int) R_PARISC_PCREL17F | |
2910 | && r_type != (unsigned int) R_PARISC_PCREL22F) | |
2911 | continue; | |
2912 | ||
2913 | /* Now determine the call target, its name, value, | |
2914 | section. */ | |
2915 | sym_sec = NULL; | |
2916 | sym_value = 0; | |
2917 | destination = 0; | |
2918 | hash = NULL; | |
2919 | if (r_indx < symtab_hdr->sh_info) | |
2920 | { | |
2921 | /* It's a local symbol. */ | |
2922 | Elf_Internal_Sym *sym; | |
2923 | Elf_Internal_Shdr *hdr; | |
2924 | ||
2925 | sym = local_syms + r_indx; | |
2926 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
2927 | sym_sec = hdr->bfd_section; | |
2928 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2929 | sym_value = sym->st_value; | |
2930 | destination = (sym_value + irela->r_addend | |
2931 | + sym_sec->output_offset | |
2932 | + sym_sec->output_section->vma); | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | /* It's an external symbol. */ | |
2937 | int e_indx; | |
2938 | ||
2939 | e_indx = r_indx - symtab_hdr->sh_info; | |
2940 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2941 | elf_sym_hashes (input_bfd)[e_indx]); | |
2942 | ||
2943 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2944 | || hash->elf.root.type == bfd_link_hash_warning) | |
2945 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2946 | hash->elf.root.u.i.link); | |
2947 | ||
2948 | if (hash->elf.root.type == bfd_link_hash_defined | |
2949 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2950 | { | |
2951 | sym_sec = hash->elf.root.u.def.section; | |
2952 | sym_value = hash->elf.root.u.def.value; | |
2953 | if (sym_sec->output_section != NULL) | |
2954 | destination = (sym_value + irela->r_addend | |
2955 | + sym_sec->output_offset | |
2956 | + sym_sec->output_section->vma); | |
2957 | } | |
2958 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
2959 | { | |
2960 | if (! info->shared) | |
2961 | continue; | |
2962 | } | |
2963 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
2964 | { | |
2965 | if (! (info->shared | |
2966 | && !info->no_undefined | |
2967 | && (ELF_ST_VISIBILITY (hash->elf.other) | |
2968 | == STV_DEFAULT))) | |
2969 | continue; | |
2970 | } | |
2971 | else | |
2972 | { | |
2973 | bfd_set_error (bfd_error_bad_value); | |
2974 | goto error_ret_free_internal; | |
2975 | } | |
2976 | } | |
2977 | ||
2978 | /* Determine what (if any) linker stub is needed. */ | |
2979 | stub_type = hppa_type_of_stub (section, irela, hash, | |
2980 | destination); | |
2981 | if (stub_type == hppa_stub_none) | |
2982 | continue; | |
2983 | ||
25f72752 AM |
2984 | /* Support for grouping stub sections. */ |
2985 | id_sec = hplink->stub_group[section->id].link_sec; | |
2986 | ||
30667bf3 | 2987 | /* Get the name of this stub. */ |
25f72752 | 2988 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela); |
30667bf3 AM |
2989 | if (!stub_name) |
2990 | goto error_ret_free_internal; | |
2991 | ||
2992 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2993 | stub_name, | |
2994 | false, false); | |
2995 | if (stub_entry != NULL) | |
2996 | { | |
2997 | /* The proper stub has already been created. */ | |
2998 | free (stub_name); | |
2999 | continue; | |
3000 | } | |
3001 | ||
25f72752 | 3002 | stub_entry = hppa_add_stub (stub_name, section, hplink); |
30667bf3 AM |
3003 | if (stub_entry == NULL) |
3004 | { | |
3005 | free (stub_name); | |
3006 | goto error_ret_free_local; | |
3007 | } | |
3008 | ||
3009 | stub_entry->target_value = sym_value; | |
3010 | stub_entry->target_section = sym_sec; | |
3011 | stub_entry->stub_type = stub_type; | |
3012 | if (info->shared) | |
3013 | { | |
3014 | if (stub_type == hppa_stub_import) | |
3015 | stub_entry->stub_type = hppa_stub_import_shared; | |
3016 | else if (stub_type == hppa_stub_long_branch | |
3017 | && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL)) | |
3018 | stub_entry->stub_type = hppa_stub_long_branch_shared; | |
3019 | } | |
3020 | stub_entry->h = hash; | |
3021 | stub_changed = 1; | |
3022 | } | |
3023 | ||
3024 | /* We're done with the internal relocs, free them. */ | |
3025 | free (internal_relocs); | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | if (!stub_changed) | |
3030 | break; | |
3031 | ||
3032 | /* OK, we've added some stubs. Find out the new size of the | |
3033 | stub sections. */ | |
30667bf3 AM |
3034 | for (stub_sec = hplink->stub_bfd->sections; |
3035 | stub_sec != NULL; | |
3036 | stub_sec = stub_sec->next) | |
3037 | { | |
74d1c347 AM |
3038 | stub_sec->_raw_size = 0; |
3039 | stub_sec->_cooked_size = 0; | |
3040 | } | |
3041 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
25f72752 AM |
3042 | { |
3043 | int i; | |
3044 | ||
3045 | for (i = top_id; i >= 0; --i) | |
3046 | { | |
3047 | /* This will probably hit the same section many times.. */ | |
3048 | stub_sec = hplink->stub_group[i].reloc_sec; | |
3049 | if (stub_sec != NULL) | |
3050 | { | |
3051 | stub_sec->_raw_size = 0; | |
3052 | stub_sec->_cooked_size = 0; | |
3053 | } | |
3054 | } | |
3055 | } | |
74d1c347 AM |
3056 | #endif |
3057 | ||
3058 | bfd_hash_traverse (&hplink->stub_hash_table, | |
3059 | hppa_size_one_stub, | |
3060 | hplink); | |
3061 | ||
30667bf3 AM |
3062 | /* Ask the linker to do its stuff. */ |
3063 | (*hplink->layout_sections_again) (); | |
3064 | stub_changed = 0; | |
3065 | } | |
3066 | ||
25f72752 | 3067 | ret = 1; |
30667bf3 AM |
3068 | |
3069 | error_ret_free_local: | |
25f72752 AM |
3070 | while (bfd_count-- > 0) |
3071 | if (all_local_syms[bfd_count]) | |
3072 | free (all_local_syms[bfd_count]); | |
30667bf3 AM |
3073 | free (all_local_syms); |
3074 | ||
25f72752 | 3075 | return ret; |
30667bf3 AM |
3076 | } |
3077 | ||
30667bf3 AM |
3078 | /* For a final link, this function is called after we have sized the |
3079 | stubs to provide a value for __gp. */ | |
3080 | ||
3081 | boolean | |
3082 | elf32_hppa_set_gp (abfd, info) | |
3083 | bfd *abfd; | |
3084 | struct bfd_link_info *info; | |
3085 | { | |
74d1c347 | 3086 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
3087 | struct elf_link_hash_entry *h; |
3088 | asection *sec; | |
3089 | bfd_vma gp_val; | |
3090 | ||
74d1c347 AM |
3091 | hplink = hppa_link_hash_table (info); |
3092 | h = elf_link_hash_lookup (&hplink->root, "$global$", | |
30667bf3 AM |
3093 | false, false, false); |
3094 | ||
df8634e3 AM |
3095 | if (h != NULL |
3096 | && (h->root.type == bfd_link_hash_defined | |
3097 | || h->root.type == bfd_link_hash_defweak)) | |
30667bf3 AM |
3098 | { |
3099 | gp_val = h->root.u.def.value; | |
3100 | sec = h->root.u.def.section; | |
3101 | } | |
3102 | else | |
3103 | { | |
74d1c347 AM |
3104 | /* Choose to point our LTP at, in this order, one of .plt, .got, |
3105 | or .data, if these sections exist. In the case of choosing | |
3106 | .plt try to make the LTP ideal for addressing anywhere in the | |
3107 | .plt or .got with a 14 bit signed offset. Typically, the end | |
3108 | of the .plt is the start of the .got, so choose .plt + 0x2000 | |
3109 | if either the .plt or .got is larger than 0x2000. If both | |
3110 | the .plt and .got are smaller than 0x2000, choose the end of | |
3111 | the .plt section. */ | |
3112 | ||
3113 | sec = hplink->splt; | |
3114 | if (sec != NULL) | |
30667bf3 | 3115 | { |
74d1c347 AM |
3116 | gp_val = sec->_raw_size; |
3117 | if (gp_val > 0x2000 | |
3118 | || (hplink->sgot && hplink->sgot->_raw_size > 0x2000)) | |
3119 | { | |
3120 | gp_val = 0x2000; | |
3121 | } | |
3122 | } | |
3123 | else | |
3124 | { | |
3125 | gp_val = 0; | |
3126 | sec = hplink->sgot; | |
3127 | if (sec != NULL) | |
3128 | { | |
3129 | /* We know we don't have a .plt. If .got is large, | |
3130 | offset our LTP. */ | |
3131 | if (sec->_raw_size > 0x2000) | |
3132 | gp_val = 0x2000; | |
3133 | } | |
3134 | else | |
3135 | { | |
3136 | /* No .plt or .got. Who cares what the LTP is? */ | |
3137 | sec = bfd_get_section_by_name (abfd, ".data"); | |
3138 | } | |
30667bf3 | 3139 | } |
df8634e3 AM |
3140 | |
3141 | if (h != NULL) | |
3142 | { | |
3143 | h->root.type = bfd_link_hash_defined; | |
3144 | h->root.u.def.value = gp_val; | |
3145 | if (sec != NULL) | |
3146 | h->root.u.def.section = sec; | |
3147 | else | |
3148 | h->root.u.def.section = bfd_abs_section_ptr; | |
3149 | } | |
30667bf3 AM |
3150 | } |
3151 | ||
b32b5d6e | 3152 | if (sec != NULL && sec->output_section != NULL) |
74d1c347 AM |
3153 | gp_val += sec->output_section->vma + sec->output_offset; |
3154 | ||
3155 | elf_gp (abfd) = gp_val; | |
30667bf3 AM |
3156 | return true; |
3157 | } | |
3158 | ||
30667bf3 AM |
3159 | /* Build all the stubs associated with the current output file. The |
3160 | stubs are kept in a hash table attached to the main linker hash | |
3161 | table. We also set up the .plt entries for statically linked PIC | |
3162 | functions here. This function is called via hppaelf_finish in the | |
3163 | linker. */ | |
3164 | ||
3165 | boolean | |
3166 | elf32_hppa_build_stubs (info) | |
3167 | struct bfd_link_info *info; | |
3168 | { | |
3169 | asection *stub_sec; | |
3170 | struct bfd_hash_table *table; | |
3171 | struct elf32_hppa_link_hash_table *hplink; | |
3172 | ||
3173 | hplink = hppa_link_hash_table (info); | |
3174 | ||
3175 | for (stub_sec = hplink->stub_bfd->sections; | |
3176 | stub_sec != NULL; | |
3177 | stub_sec = stub_sec->next) | |
3178 | { | |
74d1c347 | 3179 | size_t size; |
30667bf3 AM |
3180 | |
3181 | /* Allocate memory to hold the linker stubs. */ | |
74d1c347 | 3182 | size = stub_sec->_raw_size; |
30667bf3 AM |
3183 | stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd, |
3184 | size); | |
3185 | if (stub_sec->contents == NULL && size != 0) | |
3186 | return false; | |
74d1c347 | 3187 | stub_sec->_raw_size = 0; |
30667bf3 AM |
3188 | } |
3189 | ||
3190 | /* Build the stubs as directed by the stub hash table. */ | |
30667bf3 AM |
3191 | table = &hplink->stub_hash_table; |
3192 | bfd_hash_traverse (table, hppa_build_one_stub, info); | |
3193 | ||
3194 | return true; | |
3195 | } | |
3196 | ||
c46b7515 AM |
3197 | /* Perform a final link. */ |
3198 | ||
3199 | static boolean | |
3200 | elf32_hppa_final_link (abfd, info) | |
3201 | bfd *abfd; | |
3202 | struct bfd_link_info *info; | |
3203 | { | |
3204 | asection *s; | |
3205 | ||
4dc86686 AM |
3206 | /* Invoke the regular ELF linker to do all the work. */ |
3207 | if (!bfd_elf32_bfd_final_link (abfd, info)) | |
c46b7515 AM |
3208 | return false; |
3209 | ||
3210 | /* If we're producing a final executable, sort the contents of the | |
3211 | unwind section. Magic section names, but this is much safer than | |
3212 | having elf32_hppa_relocate_section remember where SEGREL32 relocs | |
3213 | occurred. Consider what happens if someone inept creates a | |
3214 | linker script that puts unwind information in .text. */ | |
3215 | s = bfd_get_section_by_name (abfd, ".PARISC.unwind"); | |
3216 | if (s != NULL) | |
3217 | { | |
3218 | bfd_size_type size; | |
3219 | char *contents; | |
3220 | ||
3221 | size = s->_raw_size; | |
3222 | contents = bfd_malloc (size); | |
3223 | if (contents == NULL) | |
3224 | return false; | |
3225 | ||
3226 | if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size)) | |
3227 | return false; | |
3228 | ||
3229 | qsort (contents, size / 16, 16, hppa_unwind_entry_compare); | |
3230 | ||
3231 | if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size)) | |
3232 | return false; | |
3233 | } | |
3234 | return true; | |
3235 | } | |
3236 | ||
3237 | /* Record the lowest address for the data and text segments. */ | |
3238 | ||
3239 | static void | |
3240 | hppa_record_segment_addr (abfd, section, data) | |
3241 | bfd *abfd ATTRIBUTE_UNUSED; | |
3242 | asection *section; | |
3243 | PTR data; | |
3244 | { | |
3245 | struct elf32_hppa_link_hash_table *hplink; | |
3246 | ||
3247 | hplink = (struct elf32_hppa_link_hash_table *) data; | |
3248 | ||
3249 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
3250 | { | |
3251 | bfd_vma value = section->vma - section->filepos; | |
3252 | ||
3253 | if ((section->flags & SEC_READONLY) != 0) | |
3254 | { | |
3255 | if (value < hplink->text_segment_base) | |
3256 | hplink->text_segment_base = value; | |
3257 | } | |
3258 | else | |
3259 | { | |
3260 | if (value < hplink->data_segment_base) | |
3261 | hplink->data_segment_base = value; | |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | ||
30667bf3 AM |
3266 | /* Perform a relocation as part of a final link. */ |
3267 | ||
3268 | static bfd_reloc_status_type | |
25f72752 | 3269 | final_link_relocate (input_section, contents, rel, value, hplink, sym_sec, h) |
30667bf3 AM |
3270 | asection *input_section; |
3271 | bfd_byte *contents; | |
3272 | const Elf_Internal_Rela *rel; | |
3273 | bfd_vma value; | |
25f72752 | 3274 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
3275 | asection *sym_sec; |
3276 | struct elf32_hppa_link_hash_entry *h; | |
3277 | { | |
3278 | int insn; | |
3279 | unsigned int r_type = ELF32_R_TYPE (rel->r_info); | |
3280 | reloc_howto_type *howto = elf_hppa_howto_table + r_type; | |
3281 | int r_format = howto->bitsize; | |
3282 | enum hppa_reloc_field_selector_type_alt r_field; | |
3283 | bfd *input_bfd = input_section->owner; | |
3284 | bfd_vma offset = rel->r_offset; | |
3285 | bfd_vma max_branch_offset = 0; | |
3286 | bfd_byte *hit_data = contents + offset; | |
3287 | bfd_signed_vma addend = rel->r_addend; | |
3288 | bfd_vma location; | |
3289 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL; | |
3290 | int val; | |
3291 | ||
3292 | if (r_type == R_PARISC_NONE) | |
3293 | return bfd_reloc_ok; | |
3294 | ||
3295 | insn = bfd_get_32 (input_bfd, hit_data); | |
3296 | ||
3297 | /* Find out where we are and where we're going. */ | |
3298 | location = (offset + | |
3299 | input_section->output_offset + | |
3300 | input_section->output_section->vma); | |
3301 | ||
3302 | switch (r_type) | |
3303 | { | |
3304 | case R_PARISC_PCREL12F: | |
3305 | case R_PARISC_PCREL17F: | |
3306 | case R_PARISC_PCREL22F: | |
3307 | /* If this is a call to a function defined in another dynamic | |
3308 | library, or if it is a call to a PIC function in the same | |
74d1c347 AM |
3309 | object, or if this is a shared link and it is a call to a |
3310 | weak symbol which may or may not be in the same object, then | |
3311 | find the import stub in the stub hash. */ | |
30667bf3 AM |
3312 | if (sym_sec == NULL |
3313 | || sym_sec->output_section == NULL | |
12cca0d2 AM |
3314 | || (h != NULL |
3315 | && ((h->maybe_pic_call | |
3316 | && !(input_section->flags & SEC_HAS_GOT_REF)) | |
3317 | || (h->elf.root.type == bfd_link_hash_defweak | |
3318 | && h->elf.dynindx != -1 | |
3319 | && h->elf.plt.offset != (bfd_vma) -1)))) | |
30667bf3 AM |
3320 | { |
3321 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
25f72752 | 3322 | h, rel, hplink); |
30667bf3 AM |
3323 | if (stub_entry != NULL) |
3324 | { | |
3325 | value = (stub_entry->stub_offset | |
3326 | + stub_entry->stub_sec->output_offset | |
3327 | + stub_entry->stub_sec->output_section->vma); | |
3328 | addend = 0; | |
3329 | } | |
3330 | else if (sym_sec == NULL && h != NULL | |
3331 | && h->elf.root.type == bfd_link_hash_undefweak) | |
3332 | { | |
db20fd76 AM |
3333 | /* It's OK if undefined weak. Calls to undefined weak |
3334 | symbols behave as if the "called" function | |
3335 | immediately returns. We can thus call to a weak | |
3336 | function without first checking whether the function | |
3337 | is defined. */ | |
30667bf3 | 3338 | value = location; |
db20fd76 | 3339 | addend = 8; |
30667bf3 AM |
3340 | } |
3341 | else | |
3342 | return bfd_reloc_notsupported; | |
3343 | } | |
3344 | /* Fall thru. */ | |
3345 | ||
3346 | case R_PARISC_PCREL21L: | |
3347 | case R_PARISC_PCREL17C: | |
3348 | case R_PARISC_PCREL17R: | |
3349 | case R_PARISC_PCREL14R: | |
3350 | case R_PARISC_PCREL14F: | |
3351 | /* Make it a pc relative offset. */ | |
3352 | value -= location; | |
3353 | addend -= 8; | |
3354 | break; | |
3355 | ||
3356 | case R_PARISC_DPREL21L: | |
3357 | case R_PARISC_DPREL14R: | |
3358 | case R_PARISC_DPREL14F: | |
3359 | /* For all the DP relative relocations, we need to examine the symbol's | |
3360 | section. If it's a code section, then "data pointer relative" makes | |
3361 | no sense. In that case we don't adjust the "value", and for 21 bit | |
3362 | addil instructions, we change the source addend register from %dp to | |
3363 | %r0. This situation commonly arises when a variable's "constness" | |
3364 | is declared differently from the way the variable is defined. For | |
3365 | instance: "extern int foo" with foo defined as "const int foo". */ | |
3366 | if (sym_sec == NULL) | |
3367 | break; | |
3368 | if ((sym_sec->flags & SEC_CODE) != 0) | |
3369 | { | |
3370 | if ((insn & ((0x3f << 26) | (0x1f << 21))) | |
3371 | == (((int) OP_ADDIL << 26) | (27 << 21))) | |
3372 | { | |
3373 | insn &= ~ (0x1f << 21); | |
74d1c347 | 3374 | #if 1 /* debug them. */ |
30667bf3 AM |
3375 | (*_bfd_error_handler) |
3376 | (_("%s(%s+0x%lx): fixing %s"), | |
3377 | bfd_get_filename (input_bfd), | |
3378 | input_section->name, | |
3379 | (long) rel->r_offset, | |
3380 | howto->name); | |
3381 | #endif | |
3382 | } | |
3383 | /* Now try to make things easy for the dynamic linker. */ | |
3384 | ||
3385 | break; | |
3386 | } | |
74d1c347 | 3387 | /* Fall thru. */ |
30667bf3 AM |
3388 | |
3389 | case R_PARISC_DLTIND21L: | |
3390 | case R_PARISC_DLTIND14R: | |
3391 | case R_PARISC_DLTIND14F: | |
3392 | value -= elf_gp (input_section->output_section->owner); | |
3393 | break; | |
3394 | ||
c46b7515 AM |
3395 | case R_PARISC_SEGREL32: |
3396 | if ((sym_sec->flags & SEC_CODE) != 0) | |
3397 | value -= hplink->text_segment_base; | |
3398 | else | |
3399 | value -= hplink->data_segment_base; | |
3400 | break; | |
3401 | ||
30667bf3 AM |
3402 | default: |
3403 | break; | |
3404 | } | |
3405 | ||
3406 | switch (r_type) | |
3407 | { | |
3408 | case R_PARISC_DIR32: | |
47d89dba | 3409 | case R_PARISC_DIR14F: |
30667bf3 AM |
3410 | case R_PARISC_DIR17F: |
3411 | case R_PARISC_PCREL17C: | |
3412 | case R_PARISC_PCREL14F: | |
3413 | case R_PARISC_DPREL14F: | |
3414 | case R_PARISC_PLABEL32: | |
3415 | case R_PARISC_DLTIND14F: | |
3416 | case R_PARISC_SEGBASE: | |
3417 | case R_PARISC_SEGREL32: | |
3418 | r_field = e_fsel; | |
3419 | break; | |
3420 | ||
3421 | case R_PARISC_DIR21L: | |
3422 | case R_PARISC_PCREL21L: | |
3423 | case R_PARISC_DPREL21L: | |
3424 | case R_PARISC_PLABEL21L: | |
3425 | case R_PARISC_DLTIND21L: | |
3426 | r_field = e_lrsel; | |
3427 | break; | |
3428 | ||
3429 | case R_PARISC_DIR17R: | |
3430 | case R_PARISC_PCREL17R: | |
3431 | case R_PARISC_DIR14R: | |
3432 | case R_PARISC_PCREL14R: | |
3433 | case R_PARISC_DPREL14R: | |
3434 | case R_PARISC_PLABEL14R: | |
3435 | case R_PARISC_DLTIND14R: | |
3436 | r_field = e_rrsel; | |
3437 | break; | |
3438 | ||
3439 | case R_PARISC_PCREL12F: | |
3440 | case R_PARISC_PCREL17F: | |
3441 | case R_PARISC_PCREL22F: | |
3442 | r_field = e_fsel; | |
3443 | ||
3444 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3445 | { | |
3446 | max_branch_offset = (1 << (17-1)) << 2; | |
3447 | } | |
3448 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3449 | { | |
3450 | max_branch_offset = (1 << (12-1)) << 2; | |
3451 | } | |
3452 | else | |
3453 | { | |
3454 | max_branch_offset = (1 << (22-1)) << 2; | |
3455 | } | |
3456 | ||
3457 | /* sym_sec is NULL on undefined weak syms or when shared on | |
3458 | undefined syms. We've already checked for a stub for the | |
3459 | shared undefined case. */ | |
3460 | if (sym_sec == NULL) | |
3461 | break; | |
3462 | ||
3463 | /* If the branch is out of reach, then redirect the | |
3464 | call to the local stub for this function. */ | |
3465 | if (value + addend + max_branch_offset >= 2*max_branch_offset) | |
3466 | { | |
3467 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
25f72752 | 3468 | h, rel, hplink); |
30667bf3 AM |
3469 | if (stub_entry == NULL) |
3470 | return bfd_reloc_notsupported; | |
3471 | ||
3472 | /* Munge up the value and addend so that we call the stub | |
3473 | rather than the procedure directly. */ | |
3474 | value = (stub_entry->stub_offset | |
3475 | + stub_entry->stub_sec->output_offset | |
3476 | + stub_entry->stub_sec->output_section->vma | |
3477 | - location); | |
3478 | addend = -8; | |
3479 | } | |
3480 | break; | |
3481 | ||
3482 | /* Something we don't know how to handle. */ | |
3483 | default: | |
3484 | return bfd_reloc_notsupported; | |
3485 | } | |
3486 | ||
3487 | /* Make sure we can reach the stub. */ | |
3488 | if (max_branch_offset != 0 | |
3489 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3490 | { | |
3491 | (*_bfd_error_handler) | |
3492 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), | |
3493 | bfd_get_filename (input_bfd), | |
3494 | input_section->name, | |
3495 | (long) rel->r_offset, | |
3496 | stub_entry->root.string); | |
3497 | return bfd_reloc_notsupported; | |
3498 | } | |
3499 | ||
3500 | val = hppa_field_adjust (value, addend, r_field); | |
3501 | ||
3502 | switch (r_type) | |
3503 | { | |
3504 | case R_PARISC_PCREL12F: | |
3505 | case R_PARISC_PCREL17C: | |
3506 | case R_PARISC_PCREL17F: | |
3507 | case R_PARISC_PCREL17R: | |
3508 | case R_PARISC_PCREL22F: | |
3509 | case R_PARISC_DIR17F: | |
3510 | case R_PARISC_DIR17R: | |
3511 | /* This is a branch. Divide the offset by four. | |
3512 | Note that we need to decide whether it's a branch or | |
3513 | otherwise by inspecting the reloc. Inspecting insn won't | |
3514 | work as insn might be from a .word directive. */ | |
3515 | val >>= 2; | |
3516 | break; | |
3517 | ||
3518 | default: | |
3519 | break; | |
3520 | } | |
3521 | ||
3522 | insn = hppa_rebuild_insn (insn, val, r_format); | |
3523 | ||
3524 | /* Update the instruction word. */ | |
74d1c347 | 3525 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); |
30667bf3 AM |
3526 | return bfd_reloc_ok; |
3527 | } | |
3528 | ||
30667bf3 AM |
3529 | /* Relocate an HPPA ELF section. */ |
3530 | ||
3531 | static boolean | |
3532 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, | |
3533 | contents, relocs, local_syms, local_sections) | |
3534 | bfd *output_bfd; | |
3535 | struct bfd_link_info *info; | |
3536 | bfd *input_bfd; | |
3537 | asection *input_section; | |
3538 | bfd_byte *contents; | |
3539 | Elf_Internal_Rela *relocs; | |
3540 | Elf_Internal_Sym *local_syms; | |
3541 | asection **local_sections; | |
3542 | { | |
3543 | bfd *dynobj; | |
3544 | bfd_vma *local_got_offsets; | |
3545 | struct elf32_hppa_link_hash_table *hplink; | |
3546 | Elf_Internal_Shdr *symtab_hdr; | |
3547 | Elf_Internal_Rela *rel; | |
3548 | Elf_Internal_Rela *relend; | |
3549 | asection *sreloc; | |
3550 | ||
3551 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3552 | ||
30667bf3 | 3553 | hplink = hppa_link_hash_table (info); |
74d1c347 AM |
3554 | dynobj = hplink->root.dynobj; |
3555 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
30667bf3 AM |
3556 | sreloc = NULL; |
3557 | ||
3558 | rel = relocs; | |
3559 | relend = relocs + input_section->reloc_count; | |
3560 | for (; rel < relend; rel++) | |
3561 | { | |
3562 | unsigned int r_type; | |
3563 | reloc_howto_type *howto; | |
3564 | unsigned int r_symndx; | |
3565 | struct elf32_hppa_link_hash_entry *h; | |
3566 | Elf_Internal_Sym *sym; | |
3567 | asection *sym_sec; | |
3568 | bfd_vma relocation; | |
3569 | bfd_reloc_status_type r; | |
3570 | const char *sym_name; | |
74d1c347 | 3571 | boolean plabel; |
30667bf3 AM |
3572 | |
3573 | r_type = ELF32_R_TYPE (rel->r_info); | |
3574 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
3575 | { | |
3576 | bfd_set_error (bfd_error_bad_value); | |
3577 | return false; | |
3578 | } | |
3579 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3580 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3581 | continue; | |
3582 | ||
3583 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3584 | ||
3585 | if (info->relocateable) | |
3586 | { | |
3587 | /* This is a relocateable link. We don't have to change | |
3588 | anything, unless the reloc is against a section symbol, | |
3589 | in which case we have to adjust according to where the | |
3590 | section symbol winds up in the output section. */ | |
3591 | if (r_symndx < symtab_hdr->sh_info) | |
3592 | { | |
3593 | sym = local_syms + r_symndx; | |
3594 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3595 | { | |
3596 | sym_sec = local_sections[r_symndx]; | |
3597 | rel->r_addend += sym_sec->output_offset; | |
3598 | } | |
3599 | } | |
3600 | continue; | |
3601 | } | |
3602 | ||
3603 | /* This is a final link. */ | |
3604 | h = NULL; | |
3605 | sym = NULL; | |
3606 | sym_sec = NULL; | |
3607 | if (r_symndx < symtab_hdr->sh_info) | |
3608 | { | |
3609 | /* This is a local symbol, h defaults to NULL. */ | |
3610 | sym = local_syms + r_symndx; | |
3611 | sym_sec = local_sections[r_symndx]; | |
3612 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3613 | ? 0 : sym->st_value) | |
3614 | + sym_sec->output_offset | |
3615 | + sym_sec->output_section->vma); | |
3616 | } | |
3617 | else | |
3618 | { | |
3619 | int indx; | |
3620 | ||
3621 | /* It's a global; Find its entry in the link hash. */ | |
3622 | indx = r_symndx - symtab_hdr->sh_info; | |
3623 | h = ((struct elf32_hppa_link_hash_entry *) | |
3624 | elf_sym_hashes (input_bfd)[indx]); | |
3625 | while (h->elf.root.type == bfd_link_hash_indirect | |
3626 | || h->elf.root.type == bfd_link_hash_warning) | |
3627 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link; | |
3628 | ||
3629 | relocation = 0; | |
3630 | if (h->elf.root.type == bfd_link_hash_defined | |
3631 | || h->elf.root.type == bfd_link_hash_defweak) | |
3632 | { | |
3633 | sym_sec = h->elf.root.u.def.section; | |
3634 | /* If sym_sec->output_section is NULL, then it's a | |
3635 | symbol defined in a shared library. */ | |
3636 | if (sym_sec->output_section != NULL) | |
3637 | relocation = (h->elf.root.u.def.value | |
3638 | + sym_sec->output_offset | |
3639 | + sym_sec->output_section->vma); | |
3640 | } | |
3641 | else if (h->elf.root.type == bfd_link_hash_undefweak) | |
3642 | ; | |
3643 | else if (info->shared && !info->no_undefined | |
49e9d0d3 AM |
3644 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
3645 | && h->elf.type != STT_PARISC_MILLI) | |
30667bf3 AM |
3646 | { |
3647 | if (info->symbolic) | |
3648 | if (!((*info->callbacks->undefined_symbol) | |
3649 | (info, h->elf.root.root.string, input_bfd, | |
3650 | input_section, rel->r_offset, false))) | |
3651 | return false; | |
3652 | } | |
3653 | else | |
3654 | { | |
3655 | if (!((*info->callbacks->undefined_symbol) | |
3656 | (info, h->elf.root.root.string, input_bfd, | |
3657 | input_section, rel->r_offset, true))) | |
3658 | return false; | |
3659 | } | |
3660 | } | |
3661 | ||
3662 | /* Do any required modifications to the relocation value, and | |
25f72752 AM |
3663 | determine what types of dynamic info we need to output, if |
3664 | any. */ | |
74d1c347 | 3665 | plabel = 0; |
30667bf3 AM |
3666 | switch (r_type) |
3667 | { | |
3668 | case R_PARISC_DLTIND14F: | |
3669 | case R_PARISC_DLTIND14R: | |
3670 | case R_PARISC_DLTIND21L: | |
3671 | /* Relocation is to the entry for this symbol in the global | |
3672 | offset table. */ | |
3673 | if (h != NULL) | |
3674 | { | |
3675 | bfd_vma off; | |
4dc86686 | 3676 | boolean dyn; |
30667bf3 AM |
3677 | |
3678 | off = h->elf.got.offset; | |
49e9d0d3 AM |
3679 | if (off == (bfd_vma) -1) |
3680 | abort (); | |
30667bf3 | 3681 | |
4dc86686 AM |
3682 | dyn = hplink->root.dynamic_sections_created; |
3683 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf)) | |
30667bf3 AM |
3684 | { |
3685 | /* This is actually a static link, or it is a | |
3686 | -Bsymbolic link and the symbol is defined | |
3687 | locally, or the symbol was forced to be local | |
3688 | because of a version file. We must initialize | |
3689 | this entry in the global offset table. Since the | |
3690 | offset must always be a multiple of 4, we use the | |
3691 | least significant bit to record whether we have | |
3692 | initialized it already. | |
3693 | ||
3694 | When doing a dynamic link, we create a .rela.got | |
3695 | relocation entry to initialize the value. This | |
3696 | is done in the finish_dynamic_symbol routine. */ | |
3697 | if ((off & 1) != 0) | |
3698 | off &= ~1; | |
3699 | else | |
3700 | { | |
3701 | bfd_put_32 (output_bfd, relocation, | |
3702 | hplink->sgot->contents + off); | |
3703 | h->elf.got.offset |= 1; | |
3704 | } | |
3705 | } | |
3706 | ||
3707 | relocation = off; | |
3708 | } | |
3709 | else | |
3710 | { | |
3711 | /* Local symbol case. */ | |
3712 | bfd_vma off; | |
3713 | ||
49e9d0d3 AM |
3714 | if (local_got_offsets == NULL |
3715 | || (off = local_got_offsets[r_symndx]) == (bfd_vma) -1) | |
3716 | abort (); | |
30667bf3 AM |
3717 | |
3718 | /* The offset must always be a multiple of 4. We use | |
3719 | the least significant bit to record whether we have | |
3720 | already generated the necessary reloc. */ | |
3721 | if ((off & 1) != 0) | |
3722 | off &= ~1; | |
3723 | else | |
3724 | { | |
3725 | bfd_put_32 (output_bfd, relocation, | |
3726 | hplink->sgot->contents + off); | |
3727 | ||
3728 | if (info->shared) | |
3729 | { | |
8dea1268 AM |
3730 | /* Output a dynamic relocation for this GOT |
3731 | entry. In this case it is relative to the | |
3732 | base of the object because the symbol index | |
3733 | is zero. */ | |
30667bf3 AM |
3734 | Elf_Internal_Rela outrel; |
3735 | asection *srelgot = hplink->srelgot; | |
3736 | ||
3737 | outrel.r_offset = (off | |
3738 | + hplink->sgot->output_offset | |
3739 | + hplink->sgot->output_section->vma); | |
74d1c347 | 3740 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
3741 | outrel.r_addend = relocation; |
3742 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3743 | ((Elf32_External_Rela *) | |
3744 | srelgot->contents | |
3745 | + srelgot->reloc_count)); | |
3746 | ++srelgot->reloc_count; | |
3747 | } | |
252b5132 | 3748 | |
30667bf3 AM |
3749 | local_got_offsets[r_symndx] |= 1; |
3750 | } | |
252b5132 | 3751 | |
30667bf3 AM |
3752 | relocation = off; |
3753 | } | |
252b5132 | 3754 | |
30667bf3 AM |
3755 | /* Add the base of the GOT to the relocation value. */ |
3756 | relocation += (hplink->sgot->output_offset | |
3757 | + hplink->sgot->output_section->vma); | |
3758 | break; | |
252b5132 | 3759 | |
c46b7515 AM |
3760 | case R_PARISC_SEGREL32: |
3761 | /* If this is the first SEGREL relocation, then initialize | |
3762 | the segment base values. */ | |
3763 | if (hplink->text_segment_base == (bfd_vma) -1) | |
3764 | bfd_map_over_sections (output_bfd, | |
3765 | hppa_record_segment_addr, | |
3766 | hplink); | |
3767 | break; | |
3768 | ||
30667bf3 AM |
3769 | case R_PARISC_PLABEL14R: |
3770 | case R_PARISC_PLABEL21L: | |
3771 | case R_PARISC_PLABEL32: | |
74d1c347 | 3772 | if (hplink->root.dynamic_sections_created) |
252b5132 | 3773 | { |
74d1c347 AM |
3774 | bfd_vma off; |
3775 | ||
3776 | /* If we have a global symbol with a PLT slot, then | |
3777 | redirect this relocation to it. */ | |
3778 | if (h != NULL) | |
3779 | { | |
3780 | off = h->elf.plt.offset; | |
4dc86686 | 3781 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf)) |
8dea1268 AM |
3782 | { |
3783 | /* In a non-shared link, adjust_dynamic_symbols | |
3784 | isn't called for symbols forced local. We | |
3785 | need to write out the plt entry here. */ | |
3786 | if ((off & 1) != 0) | |
3787 | off &= ~1; | |
3788 | else | |
3789 | { | |
3790 | bfd_put_32 (output_bfd, | |
3791 | relocation, | |
3792 | hplink->splt->contents + off); | |
3793 | bfd_put_32 (output_bfd, | |
3794 | elf_gp (hplink->splt->output_section->owner), | |
3795 | hplink->splt->contents + off + 4); | |
3796 | h->elf.plt.offset |= 1; | |
3797 | } | |
3798 | } | |
74d1c347 AM |
3799 | } |
3800 | else | |
3801 | { | |
3802 | int indx; | |
3803 | ||
3804 | indx = r_symndx + symtab_hdr->sh_info; | |
3805 | off = local_got_offsets[indx]; | |
3806 | ||
3807 | /* As for the local .got entry case, we use the last | |
3808 | bit to record whether we've already initialised | |
3809 | this local .plt entry. */ | |
3810 | if ((off & 1) != 0) | |
3811 | off &= ~1; | |
3812 | else | |
3813 | { | |
3814 | bfd_put_32 (output_bfd, | |
3815 | relocation, | |
3816 | hplink->splt->contents + off); | |
3817 | bfd_put_32 (output_bfd, | |
3818 | elf_gp (hplink->splt->output_section->owner), | |
3819 | hplink->splt->contents + off + 4); | |
3820 | ||
3821 | if (info->shared) | |
3822 | { | |
3823 | /* Output a dynamic IPLT relocation for this | |
3824 | PLT entry. */ | |
3825 | Elf_Internal_Rela outrel; | |
3826 | asection *srelplt = hplink->srelplt; | |
3827 | ||
3828 | outrel.r_offset = (off | |
3829 | + hplink->splt->output_offset | |
3830 | + hplink->splt->output_section->vma); | |
3831 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
3832 | outrel.r_addend = relocation; | |
3833 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3834 | ((Elf32_External_Rela *) | |
3835 | srelplt->contents | |
3836 | + srelplt->reloc_count)); | |
3837 | ++srelplt->reloc_count; | |
3838 | } | |
3839 | ||
3840 | local_got_offsets[indx] |= 1; | |
3841 | } | |
3842 | } | |
3843 | ||
8dea1268 | 3844 | if (off >= (bfd_vma) -2 || (off & 1) != 0) |
49e9d0d3 | 3845 | abort (); |
74d1c347 AM |
3846 | |
3847 | /* PLABELs contain function pointers. Relocation is to | |
3848 | the entry for the function in the .plt. The magic +2 | |
3849 | offset signals to $$dyncall that the function pointer | |
3850 | is in the .plt and thus has a gp pointer too. | |
3851 | Exception: Undefined PLABELs should have a value of | |
3852 | zero. */ | |
3853 | if (h == NULL | |
3854 | || (h->elf.root.type != bfd_link_hash_undefweak | |
3855 | && h->elf.root.type != bfd_link_hash_undefined)) | |
3856 | { | |
3857 | relocation = (off | |
3858 | + hplink->splt->output_offset | |
3859 | + hplink->splt->output_section->vma | |
3860 | + 2); | |
3861 | } | |
3862 | plabel = 1; | |
30667bf3 AM |
3863 | } |
3864 | /* Fall through and possibly emit a dynamic relocation. */ | |
3865 | ||
3866 | case R_PARISC_DIR17F: | |
3867 | case R_PARISC_DIR17R: | |
47d89dba | 3868 | case R_PARISC_DIR14F: |
30667bf3 AM |
3869 | case R_PARISC_DIR14R: |
3870 | case R_PARISC_DIR21L: | |
3871 | case R_PARISC_DPREL14F: | |
3872 | case R_PARISC_DPREL14R: | |
3873 | case R_PARISC_DPREL21L: | |
3874 | case R_PARISC_DIR32: | |
3875 | /* The reloc types handled here and this conditional | |
3876 | expression must match the code in check_relocs and | |
3877 | hppa_discard_copies. ie. We need exactly the same | |
3878 | condition as in check_relocs, with some extra conditions | |
3879 | (dynindx test in this case) to cater for relocs removed | |
3880 | by hppa_discard_copies. */ | |
3881 | if ((input_section->flags & SEC_ALLOC) != 0 | |
3882 | && info->shared | |
3883 | #if RELATIVE_DYNAMIC_RELOCS | |
3884 | && (is_absolute_reloc (r_type) | |
3885 | || ((!info->symbolic | |
3886 | || (h != NULL | |
6609fa74 | 3887 | && ((h->elf.elf_link_hash_flags |
30667bf3 AM |
3888 | & ELF_LINK_HASH_DEF_REGULAR) == 0 |
3889 | || h->elf.root.type == bfd_link_hash_defweak))) | |
3890 | && (h == NULL || h->elf.dynindx != -1))) | |
3891 | #endif | |
3892 | ) | |
3893 | { | |
3894 | Elf_Internal_Rela outrel; | |
3895 | boolean skip; | |
252b5132 | 3896 | |
30667bf3 AM |
3897 | /* When generating a shared object, these relocations |
3898 | are copied into the output file to be resolved at run | |
3899 | time. */ | |
252b5132 | 3900 | |
30667bf3 | 3901 | if (sreloc == NULL) |
edd21aca | 3902 | { |
30667bf3 AM |
3903 | const char *name; |
3904 | ||
3905 | name = (bfd_elf_string_from_elf_section | |
3906 | (input_bfd, | |
3907 | elf_elfheader (input_bfd)->e_shstrndx, | |
3908 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3909 | if (name == NULL) | |
3910 | return false; | |
3911 | sreloc = bfd_get_section_by_name (dynobj, name); | |
49e9d0d3 AM |
3912 | if (sreloc == NULL) |
3913 | abort (); | |
edd21aca | 3914 | } |
252b5132 | 3915 | |
30667bf3 AM |
3916 | outrel.r_offset = rel->r_offset; |
3917 | outrel.r_addend = rel->r_addend; | |
3918 | skip = false; | |
3919 | if (elf_section_data (input_section)->stab_info != NULL) | |
edd21aca | 3920 | { |
30667bf3 AM |
3921 | bfd_vma off; |
3922 | ||
3923 | off = (_bfd_stab_section_offset | |
74d1c347 | 3924 | (output_bfd, &hplink->root.stab_info, |
30667bf3 AM |
3925 | input_section, |
3926 | &elf_section_data (input_section)->stab_info, | |
3927 | rel->r_offset)); | |
3928 | if (off == (bfd_vma) -1) | |
3929 | skip = true; | |
3930 | outrel.r_offset = off; | |
edd21aca | 3931 | } |
252b5132 | 3932 | |
30667bf3 AM |
3933 | outrel.r_offset += (input_section->output_offset |
3934 | + input_section->output_section->vma); | |
3935 | ||
3936 | if (skip) | |
252b5132 | 3937 | { |
30667bf3 | 3938 | memset (&outrel, 0, sizeof (outrel)); |
252b5132 | 3939 | } |
74d1c347 AM |
3940 | else if (h != NULL |
3941 | && h->elf.dynindx != -1 | |
3942 | && (plabel | |
3943 | || !info->symbolic | |
30667bf3 AM |
3944 | || (h->elf.elf_link_hash_flags |
3945 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
252b5132 | 3946 | { |
30667bf3 AM |
3947 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type); |
3948 | } | |
3949 | else /* It's a local symbol, or one marked to become local. */ | |
3950 | { | |
3951 | int indx = 0; | |
edd21aca | 3952 | |
30667bf3 AM |
3953 | /* Add the absolute offset of the symbol. */ |
3954 | outrel.r_addend += relocation; | |
edd21aca | 3955 | |
74d1c347 AM |
3956 | /* Global plabels need to be processed by the |
3957 | dynamic linker so that functions have at most one | |
3958 | fptr. For this reason, we need to differentiate | |
3959 | between global and local plabels, which we do by | |
3960 | providing the function symbol for a global plabel | |
3961 | reloc, and no symbol for local plabels. */ | |
3962 | if (! plabel | |
3963 | && sym_sec != NULL | |
30667bf3 AM |
3964 | && sym_sec->output_section != NULL |
3965 | && ! bfd_is_abs_section (sym_sec)) | |
252b5132 | 3966 | { |
30667bf3 AM |
3967 | indx = elf_section_data (sym_sec->output_section)->dynindx; |
3968 | /* We are turning this relocation into one | |
3969 | against a section symbol, so subtract out the | |
3970 | output section's address but not the offset | |
3971 | of the input section in the output section. */ | |
3972 | outrel.r_addend -= sym_sec->output_section->vma; | |
252b5132 | 3973 | } |
252b5132 | 3974 | |
30667bf3 AM |
3975 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
3976 | } | |
edd21aca | 3977 | |
30667bf3 AM |
3978 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
3979 | ((Elf32_External_Rela *) | |
3980 | sreloc->contents | |
3981 | + sreloc->reloc_count)); | |
3982 | ++sreloc->reloc_count; | |
3983 | } | |
3984 | break; | |
edd21aca | 3985 | |
30667bf3 AM |
3986 | default: |
3987 | break; | |
3988 | } | |
252b5132 | 3989 | |
30667bf3 | 3990 | r = final_link_relocate (input_section, contents, rel, relocation, |
25f72752 | 3991 | hplink, sym_sec, h); |
252b5132 | 3992 | |
30667bf3 AM |
3993 | if (r == bfd_reloc_ok) |
3994 | continue; | |
252b5132 | 3995 | |
30667bf3 AM |
3996 | if (h != NULL) |
3997 | sym_name = h->elf.root.root.string; | |
3998 | else | |
3999 | { | |
4000 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
4001 | symtab_hdr->sh_link, | |
4002 | sym->st_name); | |
4003 | if (sym_name == NULL) | |
4004 | return false; | |
4005 | if (*sym_name == '\0') | |
4006 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
4007 | } | |
edd21aca | 4008 | |
30667bf3 | 4009 | howto = elf_hppa_howto_table + r_type; |
252b5132 | 4010 | |
30667bf3 AM |
4011 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported) |
4012 | { | |
4013 | (*_bfd_error_handler) | |
4014 | (_("%s(%s+0x%lx): cannot handle %s for %s"), | |
4015 | bfd_get_filename (input_bfd), | |
4016 | input_section->name, | |
4017 | (long) rel->r_offset, | |
4018 | howto->name, | |
4019 | sym_name); | |
4020 | } | |
4021 | else | |
4022 | { | |
4023 | if (!((*info->callbacks->reloc_overflow) | |
4024 | (info, sym_name, howto->name, (bfd_vma) 0, | |
4025 | input_bfd, input_section, rel->r_offset))) | |
4026 | return false; | |
4027 | } | |
4028 | } | |
edd21aca | 4029 | |
30667bf3 AM |
4030 | return true; |
4031 | } | |
252b5132 | 4032 | |
c46b7515 AM |
4033 | /* Comparison function for qsort to sort unwind section during a |
4034 | final link. */ | |
4035 | ||
4036 | static int | |
4037 | hppa_unwind_entry_compare (a, b) | |
4038 | const PTR a; | |
4039 | const PTR b; | |
4040 | { | |
4041 | const bfd_byte *ap, *bp; | |
4042 | unsigned long av, bv; | |
4043 | ||
4044 | ap = (const bfd_byte *) a; | |
4045 | av = (unsigned long) ap[0] << 24; | |
4046 | av |= (unsigned long) ap[1] << 16; | |
4047 | av |= (unsigned long) ap[2] << 8; | |
4048 | av |= (unsigned long) ap[3]; | |
4049 | ||
4050 | bp = (const bfd_byte *) b; | |
4051 | bv = (unsigned long) bp[0] << 24; | |
4052 | bv |= (unsigned long) bp[1] << 16; | |
4053 | bv |= (unsigned long) bp[2] << 8; | |
4054 | bv |= (unsigned long) bp[3]; | |
4055 | ||
4056 | return av < bv ? -1 : av > bv ? 1 : 0; | |
4057 | } | |
4058 | ||
30667bf3 AM |
4059 | /* Finish up dynamic symbol handling. We set the contents of various |
4060 | dynamic sections here. */ | |
252b5132 | 4061 | |
30667bf3 AM |
4062 | static boolean |
4063 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4064 | bfd *output_bfd; | |
4065 | struct bfd_link_info *info; | |
4066 | struct elf_link_hash_entry *h; | |
4067 | Elf_Internal_Sym *sym; | |
4068 | { | |
4069 | struct elf32_hppa_link_hash_table *hplink; | |
4070 | bfd *dynobj; | |
edd21aca | 4071 | |
30667bf3 | 4072 | hplink = hppa_link_hash_table (info); |
74d1c347 | 4073 | dynobj = hplink->root.dynobj; |
30667bf3 | 4074 | |
30667bf3 AM |
4075 | if (h->plt.offset != (bfd_vma) -1) |
4076 | { | |
4077 | bfd_vma value; | |
30667bf3 | 4078 | |
8dea1268 AM |
4079 | if (h->plt.offset & 1) |
4080 | abort (); | |
4081 | ||
30667bf3 AM |
4082 | /* This symbol has an entry in the procedure linkage table. Set |
4083 | it up. | |
4084 | ||
4085 | The format of a plt entry is | |
74d1c347 AM |
4086 | <funcaddr> |
4087 | <__gp> | |
47d89dba | 4088 | */ |
30667bf3 AM |
4089 | value = 0; |
4090 | if (h->root.type == bfd_link_hash_defined | |
4091 | || h->root.type == bfd_link_hash_defweak) | |
4092 | { | |
4093 | value = h->root.u.def.value; | |
4094 | if (h->root.u.def.section->output_section != NULL) | |
4095 | value += (h->root.u.def.section->output_offset | |
4096 | + h->root.u.def.section->output_section->vma); | |
252b5132 | 4097 | } |
edd21aca | 4098 | |
74d1c347 | 4099 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) |
30667bf3 | 4100 | { |
47d89dba AM |
4101 | Elf_Internal_Rela rel; |
4102 | ||
30667bf3 AM |
4103 | /* Create a dynamic IPLT relocation for this entry. */ |
4104 | rel.r_offset = (h->plt.offset | |
4105 | + hplink->splt->output_offset | |
4106 | + hplink->splt->output_section->vma); | |
74d1c347 AM |
4107 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs |
4108 | && h->dynindx != -1) | |
4109 | { | |
47d89dba AM |
4110 | /* To support lazy linking, the function pointer is |
4111 | initialised to point to a special stub stored at the | |
8dea1268 AM |
4112 | end of the .plt. This is not done for plt entries |
4113 | with a base-relative dynamic relocation. */ | |
47d89dba AM |
4114 | value = (hplink->splt->output_offset |
4115 | + hplink->splt->output_section->vma | |
4116 | + hplink->splt->_raw_size | |
4117 | - sizeof (plt_stub) | |
4118 | + PLT_STUB_ENTRY); | |
74d1c347 AM |
4119 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT); |
4120 | rel.r_addend = 0; | |
4121 | } | |
4122 | else | |
4123 | { | |
4124 | /* This symbol has been marked to become local, and is | |
4125 | used by a plabel so must be kept in the .plt. */ | |
4126 | rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
4127 | rel.r_addend = value; | |
4128 | } | |
30667bf3 AM |
4129 | |
4130 | bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner, | |
4131 | &rel, | |
4132 | ((Elf32_External_Rela *) | |
4133 | hplink->srelplt->contents | |
4134 | + hplink->srelplt->reloc_count)); | |
4135 | hplink->srelplt->reloc_count++; | |
4136 | } | |
4137 | ||
47d89dba AM |
4138 | bfd_put_32 (hplink->splt->owner, |
4139 | value, | |
4140 | hplink->splt->contents + h->plt.offset); | |
4141 | bfd_put_32 (hplink->splt->owner, | |
4142 | elf_gp (hplink->splt->output_section->owner), | |
4143 | hplink->splt->contents + h->plt.offset + 4); | |
4144 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE | |
4145 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel | |
4146 | && h->dynindx != -1) | |
4147 | { | |
4148 | memset (hplink->splt->contents + h->plt.offset + 8, | |
4149 | 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE); | |
4150 | } | |
4151 | ||
30667bf3 AM |
4152 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
4153 | { | |
4154 | /* Mark the symbol as undefined, rather than as defined in | |
4155 | the .plt section. Leave the value alone. */ | |
4156 | sym->st_shndx = SHN_UNDEF; | |
4157 | } | |
4158 | } | |
edd21aca | 4159 | |
30667bf3 AM |
4160 | if (h->got.offset != (bfd_vma) -1) |
4161 | { | |
4162 | Elf_Internal_Rela rel; | |
4163 | ||
4164 | /* This symbol has an entry in the global offset table. Set it | |
4165 | up. */ | |
4166 | ||
4167 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) | |
4168 | + hplink->sgot->output_offset | |
4169 | + hplink->sgot->output_section->vma); | |
4170 | ||
4dc86686 AM |
4171 | /* If this is a -Bsymbolic link and the symbol is defined |
4172 | locally or was forced to be local because of a version file, | |
4173 | we just want to emit a RELATIVE reloc. The entry in the | |
4174 | global offset table will already have been initialized in the | |
4175 | relocate_section function. */ | |
4176 | if (info->shared | |
4177 | && (info->symbolic || h->dynindx == -1) | |
4178 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
30667bf3 | 4179 | { |
74d1c347 | 4180 | rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
4181 | rel.r_addend = (h->root.u.def.value |
4182 | + h->root.u.def.section->output_offset | |
4183 | + h->root.u.def.section->output_section->vma); | |
4184 | } | |
4185 | else | |
4186 | { | |
49e9d0d3 AM |
4187 | if ((h->got.offset & 1) != 0) |
4188 | abort (); | |
30667bf3 AM |
4189 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
4190 | hplink->sgot->contents + h->got.offset); | |
4191 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); | |
4192 | rel.r_addend = 0; | |
4193 | } | |
edd21aca | 4194 | |
30667bf3 AM |
4195 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
4196 | ((Elf32_External_Rela *) | |
4197 | hplink->srelgot->contents | |
4198 | + hplink->srelgot->reloc_count)); | |
4199 | ++hplink->srelgot->reloc_count; | |
4200 | } | |
edd21aca | 4201 | |
30667bf3 AM |
4202 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
4203 | { | |
4204 | asection *s; | |
4205 | Elf_Internal_Rela rel; | |
4206 | ||
4207 | /* This symbol needs a copy reloc. Set it up. */ | |
4208 | ||
49e9d0d3 AM |
4209 | if (! (h->dynindx != -1 |
4210 | && (h->root.type == bfd_link_hash_defined | |
4211 | || h->root.type == bfd_link_hash_defweak))) | |
4212 | abort (); | |
30667bf3 AM |
4213 | |
4214 | s = hplink->srelbss; | |
4215 | ||
4216 | rel.r_offset = (h->root.u.def.value | |
4217 | + h->root.u.def.section->output_offset | |
4218 | + h->root.u.def.section->output_section->vma); | |
4219 | rel.r_addend = 0; | |
4220 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY); | |
4221 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
4222 | ((Elf32_External_Rela *) s->contents | |
4223 | + s->reloc_count)); | |
4224 | ++s->reloc_count; | |
4225 | } | |
4226 | ||
4227 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
4228 | if (h->root.root.string[0] == '_' | |
4229 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4230 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)) | |
4231 | { | |
4232 | sym->st_shndx = SHN_ABS; | |
4233 | } | |
4234 | ||
4235 | return true; | |
4236 | } | |
4237 | ||
30667bf3 AM |
4238 | /* Finish up the dynamic sections. */ |
4239 | ||
4240 | static boolean | |
4241 | elf32_hppa_finish_dynamic_sections (output_bfd, info) | |
4242 | bfd *output_bfd; | |
4243 | struct bfd_link_info *info; | |
4244 | { | |
4245 | bfd *dynobj; | |
4246 | struct elf32_hppa_link_hash_table *hplink; | |
4247 | asection *sdyn; | |
4248 | ||
30667bf3 | 4249 | hplink = hppa_link_hash_table (info); |
74d1c347 | 4250 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
4251 | |
4252 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4253 | ||
74d1c347 | 4254 | if (hplink->root.dynamic_sections_created) |
30667bf3 AM |
4255 | { |
4256 | Elf32_External_Dyn *dyncon, *dynconend; | |
4257 | ||
49e9d0d3 AM |
4258 | if (sdyn == NULL) |
4259 | abort (); | |
30667bf3 AM |
4260 | |
4261 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4262 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
4263 | for (; dyncon < dynconend; dyncon++) | |
edd21aca | 4264 | { |
30667bf3 AM |
4265 | Elf_Internal_Dyn dyn; |
4266 | asection *s; | |
4267 | ||
4268 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4269 | ||
4270 | switch (dyn.d_tag) | |
4271 | { | |
4272 | default: | |
4273 | break; | |
4274 | ||
4275 | case DT_PLTGOT: | |
4276 | /* Use PLTGOT to set the GOT register. */ | |
4277 | dyn.d_un.d_ptr = elf_gp (output_bfd); | |
4278 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4279 | break; | |
4280 | ||
4281 | case DT_JMPREL: | |
4282 | s = hplink->srelplt; | |
4283 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4284 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4285 | break; | |
4286 | ||
4287 | case DT_PLTRELSZ: | |
4288 | s = hplink->srelplt; | |
4289 | if (s->_cooked_size != 0) | |
4290 | dyn.d_un.d_val = s->_cooked_size; | |
4291 | else | |
4292 | dyn.d_un.d_val = s->_raw_size; | |
4293 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4294 | break; | |
4295 | } | |
edd21aca | 4296 | } |
252b5132 | 4297 | } |
edd21aca | 4298 | |
30667bf3 AM |
4299 | if (hplink->sgot->_raw_size != 0) |
4300 | { | |
74d1c347 AM |
4301 | /* Fill in the first entry in the global offset table. |
4302 | We use it to point to our dynamic section, if we have one. */ | |
30667bf3 AM |
4303 | bfd_put_32 (output_bfd, |
4304 | (sdyn != NULL | |
4305 | ? sdyn->output_section->vma + sdyn->output_offset | |
4306 | : (bfd_vma) 0), | |
4307 | hplink->sgot->contents); | |
4308 | ||
74d1c347 | 4309 | /* The second entry is reserved for use by the dynamic linker. */ |
47d89dba | 4310 | memset (hplink->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE); |
74d1c347 | 4311 | |
30667bf3 | 4312 | /* Set .got entry size. */ |
74d1c347 AM |
4313 | elf_section_data (hplink->sgot->output_section) |
4314 | ->this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
30667bf3 AM |
4315 | } |
4316 | ||
30667bf3 | 4317 | if (hplink->splt->_raw_size != 0) |
47d89dba AM |
4318 | { |
4319 | /* Set plt entry size. */ | |
4320 | elf_section_data (hplink->splt->output_section) | |
4321 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; | |
4322 | ||
4323 | if (hplink->need_plt_stub) | |
4324 | { | |
4325 | /* Set up the .plt stub. */ | |
4326 | memcpy (hplink->splt->contents | |
4327 | + hplink->splt->_raw_size - sizeof (plt_stub), | |
4328 | plt_stub, sizeof (plt_stub)); | |
4329 | ||
4330 | if ((hplink->splt->output_offset | |
4331 | + hplink->splt->output_section->vma | |
4332 | + hplink->splt->_raw_size) | |
4333 | != (hplink->sgot->output_offset | |
4334 | + hplink->sgot->output_section->vma)) | |
4335 | { | |
4336 | (*_bfd_error_handler) | |
4337 | (_(".got section not immediately after .plt section")); | |
4338 | return false; | |
4339 | } | |
4340 | } | |
4341 | } | |
30667bf3 | 4342 | |
252b5132 | 4343 | return true; |
30667bf3 | 4344 | } |
252b5132 | 4345 | |
d952f17a AM |
4346 | /* Tweak the OSABI field of the elf header. */ |
4347 | ||
4348 | static void | |
4349 | elf32_hppa_post_process_headers (abfd, link_info) | |
4350 | bfd *abfd; | |
4351 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
4352 | { | |
4353 | Elf_Internal_Ehdr * i_ehdrp; | |
4354 | ||
4355 | i_ehdrp = elf_elfheader (abfd); | |
4356 | ||
4357 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0) | |
4358 | { | |
4359 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
4360 | } | |
4361 | else | |
4362 | { | |
4363 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX; | |
4364 | } | |
4365 | } | |
4366 | ||
30667bf3 AM |
4367 | /* Called when writing out an object file to decide the type of a |
4368 | symbol. */ | |
4369 | static int | |
4370 | elf32_hppa_elf_get_symbol_type (elf_sym, type) | |
4371 | Elf_Internal_Sym *elf_sym; | |
4372 | int type; | |
4373 | { | |
4374 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
4375 | return STT_PARISC_MILLI; | |
4376 | else | |
4377 | return type; | |
252b5132 RH |
4378 | } |
4379 | ||
4380 | /* Misc BFD support code. */ | |
30667bf3 AM |
4381 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name |
4382 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
4383 | #define elf_info_to_howto elf_hppa_info_to_howto | |
4384 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
252b5132 | 4385 | |
252b5132 | 4386 | /* Stuff for the BFD linker. */ |
c46b7515 | 4387 | #define bfd_elf32_bfd_final_link elf32_hppa_final_link |
30667bf3 AM |
4388 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create |
4389 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook | |
4390 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol | |
4391 | #define elf_backend_check_relocs elf32_hppa_check_relocs | |
4392 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections | |
4393 | #define elf_backend_fake_sections elf_hppa_fake_sections | |
4394 | #define elf_backend_relocate_section elf32_hppa_relocate_section | |
74d1c347 | 4395 | #define elf_backend_hide_symbol elf32_hppa_hide_symbol |
30667bf3 AM |
4396 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol |
4397 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections | |
4398 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections | |
4399 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook | |
4400 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook | |
4401 | #define elf_backend_object_p elf32_hppa_object_p | |
4402 | #define elf_backend_final_write_processing elf_hppa_final_write_processing | |
d952f17a | 4403 | #define elf_backend_post_process_headers elf32_hppa_post_process_headers |
30667bf3 AM |
4404 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type |
4405 | ||
4406 | #define elf_backend_can_gc_sections 1 | |
4407 | #define elf_backend_plt_alignment 2 | |
4408 | #define elf_backend_want_got_plt 0 | |
4409 | #define elf_backend_plt_readonly 0 | |
4410 | #define elf_backend_want_plt_sym 0 | |
74d1c347 | 4411 | #define elf_backend_got_header_size 8 |
252b5132 RH |
4412 | |
4413 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec | |
4414 | #define TARGET_BIG_NAME "elf32-hppa" | |
4415 | #define ELF_ARCH bfd_arch_hppa | |
4416 | #define ELF_MACHINE_CODE EM_PARISC | |
4417 | #define ELF_MAXPAGESIZE 0x1000 | |
4418 | ||
4419 | #include "elf32-target.h" | |
d952f17a AM |
4420 | |
4421 | #undef TARGET_BIG_SYM | |
4422 | #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec | |
4423 | #undef TARGET_BIG_NAME | |
4424 | #define TARGET_BIG_NAME "elf32-hppa-linux" | |
4425 | ||
4426 | #define INCLUDED_TARGET_FILE 1 | |
4427 | #include "elf32-target.h" |