1 |
227 |
jeremybenn |
/* Lattice Mico32-specific support for 32-bit ELF
|
2 |
|
|
Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
|
3 |
|
|
Contributed by Jon Beniston <jon@beniston.com>
|
4 |
|
|
|
5 |
|
|
This file is part of BFD, the Binary File Descriptor library.
|
6 |
|
|
|
7 |
|
|
This program is free software; you can redistribute it and/or modify
|
8 |
|
|
it under the terms of the GNU General Public License as published by
|
9 |
|
|
the Free Software Foundation; either version 3 of the License, or
|
10 |
|
|
(at your option) any later version.
|
11 |
|
|
|
12 |
|
|
This program is distributed in the hope that it will be useful,
|
13 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
14 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
15 |
|
|
GNU General Public License for more details.
|
16 |
|
|
|
17 |
|
|
You should have received a copy of the GNU General Public License
|
18 |
|
|
along with this program; if not, write to the Free Software
|
19 |
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
20 |
|
|
MA 02110-1301, USA. */
|
21 |
|
|
|
22 |
|
|
#include "bfd.h"
|
23 |
|
|
#include "sysdep.h"
|
24 |
|
|
#include "libbfd.h"
|
25 |
|
|
#include "elf-bfd.h"
|
26 |
|
|
#include "elf/lm32.h"
|
27 |
|
|
|
28 |
|
|
#define DEFAULT_STACK_SIZE 0x20000
|
29 |
|
|
|
30 |
|
|
#define PLT_ENTRY_SIZE 20
|
31 |
|
|
|
32 |
|
|
#define PLT0_ENTRY_WORD0 0
|
33 |
|
|
#define PLT0_ENTRY_WORD1 0
|
34 |
|
|
#define PLT0_ENTRY_WORD2 0
|
35 |
|
|
#define PLT0_ENTRY_WORD3 0
|
36 |
|
|
#define PLT0_ENTRY_WORD4 0
|
37 |
|
|
|
38 |
|
|
#define PLT0_PIC_ENTRY_WORD0 0
|
39 |
|
|
#define PLT0_PIC_ENTRY_WORD1 0
|
40 |
|
|
#define PLT0_PIC_ENTRY_WORD2 0
|
41 |
|
|
#define PLT0_PIC_ENTRY_WORD3 0
|
42 |
|
|
#define PLT0_PIC_ENTRY_WORD4 0
|
43 |
|
|
|
44 |
|
|
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
|
45 |
|
|
|
46 |
|
|
extern const bfd_target bfd_elf32_lm32fdpic_vec;
|
47 |
|
|
|
48 |
|
|
#define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_lm32fdpic_vec)
|
49 |
|
|
|
50 |
|
|
static bfd_reloc_status_type lm32_elf_gprel_reloc
|
51 |
|
|
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
52 |
|
|
|
53 |
|
|
/* The linker needs to keep track of the number of relocs that it
|
54 |
|
|
decides to copy as dynamic relocs in check_relocs for each symbol.
|
55 |
|
|
This is so that it can later discard them if they are found to be
|
56 |
|
|
unnecessary. We store the information in a field extending the
|
57 |
|
|
regular ELF linker hash table. */
|
58 |
|
|
|
59 |
|
|
struct elf_lm32_dyn_relocs
|
60 |
|
|
{
|
61 |
|
|
struct elf_lm32_dyn_relocs *next;
|
62 |
|
|
|
63 |
|
|
/* The input section of the reloc. */
|
64 |
|
|
asection *sec;
|
65 |
|
|
|
66 |
|
|
/* Total number of relocs copied for the input section. */
|
67 |
|
|
bfd_size_type count;
|
68 |
|
|
|
69 |
|
|
/* Number of pc-relative relocs copied for the input section. */
|
70 |
|
|
bfd_size_type pc_count;
|
71 |
|
|
};
|
72 |
|
|
|
73 |
|
|
/* lm32 ELF linker hash entry. */
|
74 |
|
|
|
75 |
|
|
struct elf_lm32_link_hash_entry
|
76 |
|
|
{
|
77 |
|
|
struct elf_link_hash_entry root;
|
78 |
|
|
|
79 |
|
|
/* Track dynamic relocs copied for this symbol. */
|
80 |
|
|
struct elf_lm32_dyn_relocs *dyn_relocs;
|
81 |
|
|
};
|
82 |
|
|
|
83 |
|
|
/* lm32 ELF linker hash table. */
|
84 |
|
|
|
85 |
|
|
struct elf_lm32_link_hash_table
|
86 |
|
|
{
|
87 |
|
|
struct elf_link_hash_table root;
|
88 |
|
|
|
89 |
|
|
/* Short-cuts to get to dynamic linker sections. */
|
90 |
|
|
asection *sgot;
|
91 |
|
|
asection *sgotplt;
|
92 |
|
|
asection *srelgot;
|
93 |
|
|
asection *sfixup32;
|
94 |
|
|
asection *splt;
|
95 |
|
|
asection *srelplt;
|
96 |
|
|
asection *sdynbss;
|
97 |
|
|
asection *srelbss;
|
98 |
|
|
|
99 |
|
|
int relocs32;
|
100 |
|
|
};
|
101 |
|
|
|
102 |
|
|
/* Get the lm32 ELF linker hash table from a link_info structure. */
|
103 |
|
|
|
104 |
|
|
#define lm32_elf_hash_table(p) \
|
105 |
|
|
(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
|
106 |
|
|
== LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL)
|
107 |
|
|
|
108 |
|
|
#define lm32fdpic_got_section(info) \
|
109 |
|
|
(lm32_elf_hash_table (info)->sgot)
|
110 |
|
|
#define lm32fdpic_gotrel_section(info) \
|
111 |
|
|
(lm32_elf_hash_table (info)->srelgot)
|
112 |
|
|
#define lm32fdpic_fixup32_section(info) \
|
113 |
|
|
(lm32_elf_hash_table (info)->sfixup32)
|
114 |
|
|
|
115 |
|
|
struct weak_symbol_list
|
116 |
|
|
{
|
117 |
|
|
const char *name;
|
118 |
|
|
struct weak_symbol_list *next;
|
119 |
|
|
};
|
120 |
|
|
|
121 |
|
|
/* Create an entry in an lm32 ELF linker hash table. */
|
122 |
|
|
|
123 |
|
|
static struct bfd_hash_entry *
|
124 |
|
|
lm32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
|
125 |
|
|
struct bfd_hash_table *table,
|
126 |
|
|
const char *string)
|
127 |
|
|
{
|
128 |
|
|
struct elf_lm32_link_hash_entry *ret =
|
129 |
|
|
(struct elf_lm32_link_hash_entry *) entry;
|
130 |
|
|
|
131 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
132 |
|
|
subclass. */
|
133 |
|
|
if (ret == NULL)
|
134 |
|
|
ret = bfd_hash_allocate (table,
|
135 |
|
|
sizeof (struct elf_lm32_link_hash_entry));
|
136 |
|
|
if (ret == NULL)
|
137 |
|
|
return NULL;
|
138 |
|
|
|
139 |
|
|
/* Call the allocation method of the superclass. */
|
140 |
|
|
ret = ((struct elf_lm32_link_hash_entry *)
|
141 |
|
|
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
142 |
|
|
table, string));
|
143 |
|
|
if (ret != NULL)
|
144 |
|
|
{
|
145 |
|
|
struct elf_lm32_link_hash_entry *eh;
|
146 |
|
|
|
147 |
|
|
eh = (struct elf_lm32_link_hash_entry *) ret;
|
148 |
|
|
eh->dyn_relocs = NULL;
|
149 |
|
|
}
|
150 |
|
|
|
151 |
|
|
return (struct bfd_hash_entry *) ret;
|
152 |
|
|
}
|
153 |
|
|
|
154 |
|
|
/* Create an lm32 ELF linker hash table. */
|
155 |
|
|
|
156 |
|
|
static struct bfd_link_hash_table *
|
157 |
|
|
lm32_elf_link_hash_table_create (bfd *abfd)
|
158 |
|
|
{
|
159 |
|
|
struct elf_lm32_link_hash_table *ret;
|
160 |
|
|
bfd_size_type amt = sizeof (struct elf_lm32_link_hash_table);
|
161 |
|
|
|
162 |
|
|
ret = bfd_malloc (amt);
|
163 |
|
|
if (ret == NULL)
|
164 |
|
|
return NULL;
|
165 |
|
|
|
166 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
167 |
|
|
lm32_elf_link_hash_newfunc,
|
168 |
|
|
sizeof (struct elf_lm32_link_hash_entry),
|
169 |
|
|
LM32_ELF_DATA))
|
170 |
|
|
{
|
171 |
|
|
free (ret);
|
172 |
|
|
return NULL;
|
173 |
|
|
}
|
174 |
|
|
|
175 |
|
|
ret->sgot = NULL;
|
176 |
|
|
ret->sgotplt = NULL;
|
177 |
|
|
ret->srelgot = NULL;
|
178 |
|
|
ret->sfixup32 = NULL;
|
179 |
|
|
ret->splt = NULL;
|
180 |
|
|
ret->srelplt = NULL;
|
181 |
|
|
ret->sdynbss = NULL;
|
182 |
|
|
ret->srelbss = NULL;
|
183 |
|
|
ret->relocs32 = 0;
|
184 |
|
|
|
185 |
|
|
return &ret->root.root;
|
186 |
|
|
}
|
187 |
|
|
|
188 |
|
|
/* Add a fixup to the ROFIXUP section. */
|
189 |
|
|
|
190 |
|
|
static bfd_vma
|
191 |
|
|
_lm32fdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma relocation)
|
192 |
|
|
{
|
193 |
|
|
bfd_vma fixup_offset;
|
194 |
|
|
|
195 |
|
|
if (rofixup->flags & SEC_EXCLUDE)
|
196 |
|
|
return -1;
|
197 |
|
|
|
198 |
|
|
fixup_offset = rofixup->reloc_count * 4;
|
199 |
|
|
if (rofixup->contents)
|
200 |
|
|
{
|
201 |
|
|
BFD_ASSERT (fixup_offset < rofixup->size);
|
202 |
|
|
if (fixup_offset < rofixup->size)
|
203 |
|
|
bfd_put_32 (output_bfd, relocation, rofixup->contents + fixup_offset);
|
204 |
|
|
}
|
205 |
|
|
rofixup->reloc_count++;
|
206 |
|
|
|
207 |
|
|
return fixup_offset;
|
208 |
|
|
}
|
209 |
|
|
|
210 |
|
|
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
|
211 |
|
|
shortcuts to them in our hash table. */
|
212 |
|
|
|
213 |
|
|
static bfd_boolean
|
214 |
|
|
create_got_section (bfd *dynobj, struct bfd_link_info *info)
|
215 |
|
|
{
|
216 |
|
|
struct elf_lm32_link_hash_table *htab;
|
217 |
|
|
asection *s;
|
218 |
|
|
|
219 |
|
|
/* This function may be called more than once. */
|
220 |
|
|
s = bfd_get_section_by_name (dynobj, ".got");
|
221 |
|
|
if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
|
222 |
|
|
return TRUE;
|
223 |
|
|
|
224 |
|
|
htab = lm32_elf_hash_table (info);
|
225 |
|
|
if (htab == NULL)
|
226 |
|
|
return FALSE;
|
227 |
|
|
|
228 |
|
|
if (! _bfd_elf_create_got_section (dynobj, info))
|
229 |
|
|
return FALSE;
|
230 |
|
|
|
231 |
|
|
htab->sgot = bfd_get_section_by_name (dynobj, ".got");
|
232 |
|
|
htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
|
233 |
|
|
htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
234 |
|
|
if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
|
235 |
|
|
abort ();
|
236 |
|
|
|
237 |
|
|
return TRUE;
|
238 |
|
|
}
|
239 |
|
|
|
240 |
|
|
/* Create .rofixup sections in DYNOBJ, and set up
|
241 |
|
|
shortcuts to them in our hash table. */
|
242 |
|
|
|
243 |
|
|
static bfd_boolean
|
244 |
|
|
create_rofixup_section (bfd *dynobj, struct bfd_link_info *info)
|
245 |
|
|
{
|
246 |
|
|
struct elf_lm32_link_hash_table *htab;
|
247 |
|
|
htab = lm32_elf_hash_table (info);
|
248 |
|
|
|
249 |
|
|
if (htab == NULL)
|
250 |
|
|
return FALSE;
|
251 |
|
|
|
252 |
|
|
/* Fixup section for R_LM32_32 relocs. */
|
253 |
|
|
lm32fdpic_fixup32_section (info) = bfd_make_section_with_flags (dynobj,
|
254 |
|
|
".rofixup",
|
255 |
|
|
(SEC_ALLOC
|
256 |
|
|
| SEC_LOAD
|
257 |
|
|
| SEC_HAS_CONTENTS
|
258 |
|
|
| SEC_IN_MEMORY
|
259 |
|
|
| SEC_LINKER_CREATED
|
260 |
|
|
| SEC_READONLY));
|
261 |
|
|
if (lm32fdpic_fixup32_section (info) == NULL
|
262 |
|
|
|| ! bfd_set_section_alignment (dynobj, lm32fdpic_fixup32_section (info), 2))
|
263 |
|
|
return FALSE;
|
264 |
|
|
|
265 |
|
|
return TRUE;
|
266 |
|
|
}
|
267 |
|
|
|
268 |
|
|
static reloc_howto_type lm32_elf_howto_table [] =
|
269 |
|
|
{
|
270 |
|
|
/* This reloc does nothing. */
|
271 |
|
|
HOWTO (R_LM32_NONE, /* type */
|
272 |
|
|
0, /* rightshift */
|
273 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
274 |
|
|
32, /* bitsize */
|
275 |
|
|
FALSE, /* pc_relative */
|
276 |
|
|
0, /* bitpos */
|
277 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
278 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
279 |
|
|
"R_LM32_NONE", /* name */
|
280 |
|
|
FALSE, /* partial_inplace */
|
281 |
|
|
0, /* src_mask */
|
282 |
|
|
0, /* dst_mask */
|
283 |
|
|
FALSE), /* pcrel_offset */
|
284 |
|
|
|
285 |
|
|
/* An 8 bit absolute relocation. */
|
286 |
|
|
HOWTO (R_LM32_8, /* type */
|
287 |
|
|
0, /* rightshift */
|
288 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
289 |
|
|
8, /* bitsize */
|
290 |
|
|
FALSE, /* pc_relative */
|
291 |
|
|
0, /* bitpos */
|
292 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
293 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
294 |
|
|
"R_LM32_8", /* name */
|
295 |
|
|
FALSE, /* partial_inplace */
|
296 |
|
|
0, /* src_mask */
|
297 |
|
|
0xff, /* dst_mask */
|
298 |
|
|
FALSE), /* pcrel_offset */
|
299 |
|
|
|
300 |
|
|
/* A 16 bit absolute relocation. */
|
301 |
|
|
HOWTO (R_LM32_16, /* type */
|
302 |
|
|
0, /* rightshift */
|
303 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
304 |
|
|
16, /* bitsize */
|
305 |
|
|
FALSE, /* pc_relative */
|
306 |
|
|
0, /* bitpos */
|
307 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
308 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
309 |
|
|
"R_LM32_16", /* name */
|
310 |
|
|
FALSE, /* partial_inplace */
|
311 |
|
|
0, /* src_mask */
|
312 |
|
|
0xffff, /* dst_mask */
|
313 |
|
|
FALSE), /* pcrel_offset */
|
314 |
|
|
|
315 |
|
|
/* A 32 bit absolute relocation. */
|
316 |
|
|
HOWTO (R_LM32_32, /* type */
|
317 |
|
|
0, /* rightshift */
|
318 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
319 |
|
|
32, /* bitsize */
|
320 |
|
|
FALSE, /* pc_relative */
|
321 |
|
|
0, /* bitpos */
|
322 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
323 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
324 |
|
|
"R_LM32_32", /* name */
|
325 |
|
|
FALSE, /* partial_inplace */
|
326 |
|
|
0, /* src_mask */
|
327 |
|
|
0xffffffff, /* dst_mask */
|
328 |
|
|
FALSE), /* pcrel_offset */
|
329 |
|
|
|
330 |
|
|
HOWTO (R_LM32_HI16, /* type */
|
331 |
|
|
16, /* rightshift */
|
332 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
333 |
|
|
16, /* bitsize */
|
334 |
|
|
FALSE, /* pc_relative */
|
335 |
|
|
0, /* bitpos */
|
336 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
337 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
338 |
|
|
"R_LM32_HI16", /* name */
|
339 |
|
|
FALSE, /* partial_inplace */
|
340 |
|
|
0, /* src_mask */
|
341 |
|
|
0xffff, /* dst_mask */
|
342 |
|
|
FALSE), /* pcrel_offset */
|
343 |
|
|
|
344 |
|
|
HOWTO (R_LM32_LO16, /* type */
|
345 |
|
|
0, /* rightshift */
|
346 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
347 |
|
|
16, /* bitsize */
|
348 |
|
|
FALSE, /* pc_relative */
|
349 |
|
|
0, /* bitpos */
|
350 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
351 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
352 |
|
|
"R_LM32_LO16", /* name */
|
353 |
|
|
FALSE, /* partial_inplace */
|
354 |
|
|
0, /* src_mask */
|
355 |
|
|
0xffff, /* dst_mask */
|
356 |
|
|
FALSE), /* pcrel_offset */
|
357 |
|
|
|
358 |
|
|
HOWTO (R_LM32_GPREL16, /* type */
|
359 |
|
|
0, /* rightshift */
|
360 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
361 |
|
|
16, /* bitsize */
|
362 |
|
|
FALSE, /* pc_relative */
|
363 |
|
|
0, /* bitpos */
|
364 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
365 |
|
|
lm32_elf_gprel_reloc, /* special_function */
|
366 |
|
|
"R_LM32_GPREL16", /* name */
|
367 |
|
|
FALSE, /* partial_inplace */
|
368 |
|
|
0, /* src_mask */
|
369 |
|
|
0xffff, /* dst_mask */
|
370 |
|
|
FALSE), /* pcrel_offset */
|
371 |
|
|
|
372 |
|
|
HOWTO (R_LM32_CALL, /* type */
|
373 |
|
|
2, /* rightshift */
|
374 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
375 |
|
|
26, /* bitsize */
|
376 |
|
|
TRUE, /* pc_relative */
|
377 |
|
|
0, /* bitpos */
|
378 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
379 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
380 |
|
|
"R_LM32_CALL", /* name */
|
381 |
|
|
FALSE, /* partial_inplace */
|
382 |
|
|
0, /* src_mask */
|
383 |
|
|
0x3ffffff, /* dst_mask */
|
384 |
|
|
TRUE), /* pcrel_offset */
|
385 |
|
|
|
386 |
|
|
HOWTO (R_LM32_BRANCH, /* type */
|
387 |
|
|
2, /* rightshift */
|
388 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
389 |
|
|
16, /* bitsize */
|
390 |
|
|
TRUE, /* pc_relative */
|
391 |
|
|
0, /* bitpos */
|
392 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
393 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
394 |
|
|
"R_LM32_BRANCH", /* name */
|
395 |
|
|
FALSE, /* partial_inplace */
|
396 |
|
|
0, /* src_mask */
|
397 |
|
|
0xffff, /* dst_mask */
|
398 |
|
|
TRUE), /* pcrel_offset */
|
399 |
|
|
|
400 |
|
|
/* GNU extension to record C++ vtable hierarchy. */
|
401 |
|
|
HOWTO (R_LM32_GNU_VTINHERIT, /* type */
|
402 |
|
|
0, /* rightshift */
|
403 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
404 |
|
|
0, /* bitsize */
|
405 |
|
|
FALSE, /* pc_relative */
|
406 |
|
|
0, /* bitpos */
|
407 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
408 |
|
|
NULL, /* special_function */
|
409 |
|
|
"R_LM32_GNU_VTINHERIT", /* name */
|
410 |
|
|
FALSE, /* partial_inplace */
|
411 |
|
|
0, /* src_mask */
|
412 |
|
|
0, /* dst_mask */
|
413 |
|
|
FALSE), /* pcrel_offset */
|
414 |
|
|
|
415 |
|
|
/* GNU extension to record C++ vtable member usage. */
|
416 |
|
|
HOWTO (R_LM32_GNU_VTENTRY, /* type */
|
417 |
|
|
0, /* rightshift */
|
418 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
419 |
|
|
0, /* bitsize */
|
420 |
|
|
FALSE, /* pc_relative */
|
421 |
|
|
0, /* bitpos */
|
422 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
423 |
|
|
_bfd_elf_rel_vtable_reloc_fn,/* special_function */
|
424 |
|
|
"R_LM32_GNU_VTENTRY", /* name */
|
425 |
|
|
FALSE, /* partial_inplace */
|
426 |
|
|
0, /* src_mask */
|
427 |
|
|
0, /* dst_mask */
|
428 |
|
|
FALSE), /* pcrel_offset */
|
429 |
|
|
|
430 |
|
|
HOWTO (R_LM32_16_GOT, /* type */
|
431 |
|
|
0, /* rightshift */
|
432 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
433 |
|
|
16, /* bitsize */
|
434 |
|
|
FALSE, /* pc_relative */
|
435 |
|
|
0, /* bitpos */
|
436 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
437 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
438 |
|
|
"R_LM32_16_GOT", /* name */
|
439 |
|
|
FALSE, /* partial_inplace */
|
440 |
|
|
0, /* src_mask */
|
441 |
|
|
0xffff, /* dst_mask */
|
442 |
|
|
FALSE), /* pcrel_offset */
|
443 |
|
|
|
444 |
|
|
HOWTO (R_LM32_GOTOFF_HI16, /* type */
|
445 |
|
|
16, /* rightshift */
|
446 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
447 |
|
|
16, /* bitsize */
|
448 |
|
|
FALSE, /* pc_relative */
|
449 |
|
|
0, /* bitpos */
|
450 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
451 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
452 |
|
|
"R_LM32_GOTOFF_HI16", /* name */
|
453 |
|
|
FALSE, /* partial_inplace */
|
454 |
|
|
0xffff, /* src_mask */
|
455 |
|
|
0xffff, /* dst_mask */
|
456 |
|
|
FALSE), /* pcrel_offset */
|
457 |
|
|
|
458 |
|
|
HOWTO (R_LM32_GOTOFF_LO16, /* type */
|
459 |
|
|
0, /* rightshift */
|
460 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
461 |
|
|
16, /* bitsize */
|
462 |
|
|
FALSE, /* pc_relative */
|
463 |
|
|
0, /* bitpos */
|
464 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
465 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
466 |
|
|
"R_LM32_GOTOFF_LO16", /* name */
|
467 |
|
|
FALSE, /* partial_inplace */
|
468 |
|
|
0xffff, /* src_mask */
|
469 |
|
|
0xffff, /* dst_mask */
|
470 |
|
|
FALSE), /* pcrel_offset */
|
471 |
|
|
|
472 |
|
|
HOWTO (R_LM32_COPY, /* type */
|
473 |
|
|
0, /* rightshift */
|
474 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
475 |
|
|
32, /* bitsize */
|
476 |
|
|
FALSE, /* pc_relative */
|
477 |
|
|
0, /* bitpos */
|
478 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
479 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
480 |
|
|
"R_LM32_COPY", /* name */
|
481 |
|
|
FALSE, /* partial_inplace */
|
482 |
|
|
0xffffffff, /* src_mask */
|
483 |
|
|
0xffffffff, /* dst_mask */
|
484 |
|
|
FALSE), /* pcrel_offset */
|
485 |
|
|
|
486 |
|
|
HOWTO (R_LM32_GLOB_DAT, /* type */
|
487 |
|
|
0, /* rightshift */
|
488 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
489 |
|
|
32, /* bitsize */
|
490 |
|
|
FALSE, /* pc_relative */
|
491 |
|
|
0, /* bitpos */
|
492 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
493 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
494 |
|
|
"R_LM32_GLOB_DAT", /* name */
|
495 |
|
|
FALSE, /* partial_inplace */
|
496 |
|
|
0xffffffff, /* src_mask */
|
497 |
|
|
0xffffffff, /* dst_mask */
|
498 |
|
|
FALSE), /* pcrel_offset */
|
499 |
|
|
|
500 |
|
|
HOWTO (R_LM32_JMP_SLOT, /* type */
|
501 |
|
|
0, /* rightshift */
|
502 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
503 |
|
|
32, /* bitsize */
|
504 |
|
|
FALSE, /* pc_relative */
|
505 |
|
|
0, /* bitpos */
|
506 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
507 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
508 |
|
|
"R_LM32_JMP_SLOT", /* name */
|
509 |
|
|
FALSE, /* partial_inplace */
|
510 |
|
|
0xffffffff, /* src_mask */
|
511 |
|
|
0xffffffff, /* dst_mask */
|
512 |
|
|
FALSE), /* pcrel_offset */
|
513 |
|
|
|
514 |
|
|
HOWTO (R_LM32_RELATIVE, /* type */
|
515 |
|
|
0, /* rightshift */
|
516 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
517 |
|
|
32, /* bitsize */
|
518 |
|
|
FALSE, /* pc_relative */
|
519 |
|
|
0, /* bitpos */
|
520 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
521 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
522 |
|
|
"R_LM32_RELATIVE", /* name */
|
523 |
|
|
FALSE, /* partial_inplace */
|
524 |
|
|
0xffffffff, /* src_mask */
|
525 |
|
|
0xffffffff, /* dst_mask */
|
526 |
|
|
FALSE), /* pcrel_offset */
|
527 |
|
|
|
528 |
|
|
};
|
529 |
|
|
|
530 |
|
|
/* Map BFD reloc types to lm32 ELF reloc types. */
|
531 |
|
|
|
532 |
|
|
struct lm32_reloc_map
|
533 |
|
|
{
|
534 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
535 |
|
|
unsigned char elf_reloc_val;
|
536 |
|
|
};
|
537 |
|
|
|
538 |
|
|
static const struct lm32_reloc_map lm32_reloc_map[] =
|
539 |
|
|
{
|
540 |
|
|
{ BFD_RELOC_NONE, R_LM32_NONE },
|
541 |
|
|
{ BFD_RELOC_8, R_LM32_8 },
|
542 |
|
|
{ BFD_RELOC_16, R_LM32_16 },
|
543 |
|
|
{ BFD_RELOC_32, R_LM32_32 },
|
544 |
|
|
{ BFD_RELOC_HI16, R_LM32_HI16 },
|
545 |
|
|
{ BFD_RELOC_LO16, R_LM32_LO16 },
|
546 |
|
|
{ BFD_RELOC_GPREL16, R_LM32_GPREL16 },
|
547 |
|
|
{ BFD_RELOC_LM32_CALL, R_LM32_CALL },
|
548 |
|
|
{ BFD_RELOC_LM32_BRANCH, R_LM32_BRANCH },
|
549 |
|
|
{ BFD_RELOC_VTABLE_INHERIT, R_LM32_GNU_VTINHERIT },
|
550 |
|
|
{ BFD_RELOC_VTABLE_ENTRY, R_LM32_GNU_VTENTRY },
|
551 |
|
|
{ BFD_RELOC_LM32_16_GOT, R_LM32_16_GOT },
|
552 |
|
|
{ BFD_RELOC_LM32_GOTOFF_HI16, R_LM32_GOTOFF_HI16 },
|
553 |
|
|
{ BFD_RELOC_LM32_GOTOFF_LO16, R_LM32_GOTOFF_LO16 },
|
554 |
|
|
{ BFD_RELOC_LM32_COPY, R_LM32_COPY },
|
555 |
|
|
{ BFD_RELOC_LM32_GLOB_DAT, R_LM32_GLOB_DAT },
|
556 |
|
|
{ BFD_RELOC_LM32_JMP_SLOT, R_LM32_JMP_SLOT },
|
557 |
|
|
{ BFD_RELOC_LM32_RELATIVE, R_LM32_RELATIVE },
|
558 |
|
|
};
|
559 |
|
|
|
560 |
|
|
static reloc_howto_type *
|
561 |
|
|
lm32_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
562 |
|
|
bfd_reloc_code_real_type code)
|
563 |
|
|
{
|
564 |
|
|
unsigned int i;
|
565 |
|
|
|
566 |
|
|
for (i = 0; i < sizeof (lm32_reloc_map) / sizeof (lm32_reloc_map[0]); i++)
|
567 |
|
|
if (lm32_reloc_map[i].bfd_reloc_val == code)
|
568 |
|
|
return &lm32_elf_howto_table[lm32_reloc_map[i].elf_reloc_val];
|
569 |
|
|
return NULL;
|
570 |
|
|
}
|
571 |
|
|
|
572 |
|
|
static reloc_howto_type *
|
573 |
|
|
lm32_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
574 |
|
|
const char *r_name)
|
575 |
|
|
{
|
576 |
|
|
unsigned int i;
|
577 |
|
|
|
578 |
|
|
for (i = 0;
|
579 |
|
|
i < sizeof (lm32_elf_howto_table) / sizeof (lm32_elf_howto_table[0]);
|
580 |
|
|
i++)
|
581 |
|
|
if (lm32_elf_howto_table[i].name != NULL
|
582 |
|
|
&& strcasecmp (lm32_elf_howto_table[i].name, r_name) == 0)
|
583 |
|
|
return &lm32_elf_howto_table[i];
|
584 |
|
|
|
585 |
|
|
return NULL;
|
586 |
|
|
}
|
587 |
|
|
|
588 |
|
|
|
589 |
|
|
/* Set the howto pointer for an Lattice Mico32 ELF reloc. */
|
590 |
|
|
|
591 |
|
|
static void
|
592 |
|
|
lm32_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
|
593 |
|
|
arelent *cache_ptr,
|
594 |
|
|
Elf_Internal_Rela *dst)
|
595 |
|
|
{
|
596 |
|
|
unsigned int r_type;
|
597 |
|
|
|
598 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
599 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_LM32_max);
|
600 |
|
|
cache_ptr->howto = &lm32_elf_howto_table[r_type];
|
601 |
|
|
}
|
602 |
|
|
|
603 |
|
|
/* Set the right machine number for an Lattice Mico32 ELF file. */
|
604 |
|
|
|
605 |
|
|
static bfd_boolean
|
606 |
|
|
lm32_elf_object_p (bfd *abfd)
|
607 |
|
|
{
|
608 |
|
|
return bfd_default_set_arch_mach (abfd, bfd_arch_lm32, bfd_mach_lm32);
|
609 |
|
|
}
|
610 |
|
|
|
611 |
|
|
/* Set machine type flags just before file is written out. */
|
612 |
|
|
|
613 |
|
|
static void
|
614 |
|
|
lm32_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
|
615 |
|
|
{
|
616 |
|
|
elf_elfheader (abfd)->e_machine = EM_LATTICEMICO32;
|
617 |
|
|
elf_elfheader (abfd)->e_flags &=~ EF_LM32_MACH;
|
618 |
|
|
switch (bfd_get_mach (abfd))
|
619 |
|
|
{
|
620 |
|
|
case bfd_mach_lm32:
|
621 |
|
|
elf_elfheader (abfd)->e_flags |= E_LM32_MACH;
|
622 |
|
|
break;
|
623 |
|
|
default:
|
624 |
|
|
abort ();
|
625 |
|
|
}
|
626 |
|
|
}
|
627 |
|
|
|
628 |
|
|
/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
|
629 |
|
|
dangerous relocation. */
|
630 |
|
|
|
631 |
|
|
static bfd_boolean
|
632 |
|
|
lm32_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
|
633 |
|
|
{
|
634 |
|
|
unsigned int count;
|
635 |
|
|
asymbol **sym;
|
636 |
|
|
unsigned int i;
|
637 |
|
|
|
638 |
|
|
/* If we've already figured out what GP will be, just return it. */
|
639 |
|
|
*pgp = _bfd_get_gp_value (output_bfd);
|
640 |
|
|
if (*pgp)
|
641 |
|
|
return TRUE;
|
642 |
|
|
|
643 |
|
|
count = bfd_get_symcount (output_bfd);
|
644 |
|
|
sym = bfd_get_outsymbols (output_bfd);
|
645 |
|
|
|
646 |
|
|
/* The linker script will have created a symbol named `_gp' with the
|
647 |
|
|
appropriate value. */
|
648 |
|
|
if (sym == NULL)
|
649 |
|
|
i = count;
|
650 |
|
|
else
|
651 |
|
|
{
|
652 |
|
|
for (i = 0; i < count; i++, sym++)
|
653 |
|
|
{
|
654 |
|
|
const char *name;
|
655 |
|
|
|
656 |
|
|
name = bfd_asymbol_name (*sym);
|
657 |
|
|
if (*name == '_' && strcmp (name, "_gp") == 0)
|
658 |
|
|
{
|
659 |
|
|
*pgp = bfd_asymbol_value (*sym);
|
660 |
|
|
_bfd_set_gp_value (output_bfd, *pgp);
|
661 |
|
|
break;
|
662 |
|
|
}
|
663 |
|
|
}
|
664 |
|
|
}
|
665 |
|
|
|
666 |
|
|
if (i >= count)
|
667 |
|
|
{
|
668 |
|
|
/* Only get the error once. */
|
669 |
|
|
*pgp = 4;
|
670 |
|
|
_bfd_set_gp_value (output_bfd, *pgp);
|
671 |
|
|
return FALSE;
|
672 |
|
|
}
|
673 |
|
|
|
674 |
|
|
return TRUE;
|
675 |
|
|
}
|
676 |
|
|
|
677 |
|
|
/* We have to figure out the gp value, so that we can adjust the
|
678 |
|
|
symbol value correctly. We look up the symbol _gp in the output
|
679 |
|
|
BFD. If we can't find it, we're stuck. We cache it in the ELF
|
680 |
|
|
target data. We don't need to adjust the symbol value for an
|
681 |
|
|
external symbol if we are producing relocatable output. */
|
682 |
|
|
|
683 |
|
|
static bfd_reloc_status_type
|
684 |
|
|
lm32_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
|
685 |
|
|
char **error_message, bfd_vma *pgp)
|
686 |
|
|
{
|
687 |
|
|
if (bfd_is_und_section (symbol->section) && !relocatable)
|
688 |
|
|
{
|
689 |
|
|
*pgp = 0;
|
690 |
|
|
return bfd_reloc_undefined;
|
691 |
|
|
}
|
692 |
|
|
|
693 |
|
|
*pgp = _bfd_get_gp_value (output_bfd);
|
694 |
|
|
if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0))
|
695 |
|
|
{
|
696 |
|
|
if (relocatable)
|
697 |
|
|
{
|
698 |
|
|
/* Make up a value. */
|
699 |
|
|
*pgp = symbol->section->output_section->vma + 0x4000;
|
700 |
|
|
_bfd_set_gp_value (output_bfd, *pgp);
|
701 |
|
|
}
|
702 |
|
|
else if (!lm32_elf_assign_gp (output_bfd, pgp))
|
703 |
|
|
{
|
704 |
|
|
*error_message =
|
705 |
|
|
(char *)
|
706 |
|
|
_("global pointer relative relocation when _gp not defined");
|
707 |
|
|
return bfd_reloc_dangerous;
|
708 |
|
|
}
|
709 |
|
|
}
|
710 |
|
|
|
711 |
|
|
return bfd_reloc_ok;
|
712 |
|
|
}
|
713 |
|
|
|
714 |
|
|
static bfd_reloc_status_type
|
715 |
|
|
lm32_elf_do_gprel_relocate (bfd *abfd,
|
716 |
|
|
reloc_howto_type *howto,
|
717 |
|
|
asection *input_section ATTRIBUTE_UNUSED,
|
718 |
|
|
bfd_byte *data,
|
719 |
|
|
bfd_vma offset,
|
720 |
|
|
bfd_vma symbol_value,
|
721 |
|
|
bfd_vma addend)
|
722 |
|
|
{
|
723 |
|
|
return _bfd_final_link_relocate (howto, abfd, input_section,
|
724 |
|
|
data, offset, symbol_value, addend);
|
725 |
|
|
}
|
726 |
|
|
|
727 |
|
|
static bfd_reloc_status_type
|
728 |
|
|
lm32_elf_gprel_reloc (bfd *abfd,
|
729 |
|
|
arelent *reloc_entry,
|
730 |
|
|
asymbol *symbol,
|
731 |
|
|
void *data,
|
732 |
|
|
asection *input_section,
|
733 |
|
|
bfd *output_bfd,
|
734 |
|
|
char **msg)
|
735 |
|
|
{
|
736 |
|
|
bfd_vma relocation;
|
737 |
|
|
bfd_vma gp;
|
738 |
|
|
bfd_reloc_status_type r;
|
739 |
|
|
|
740 |
|
|
if (output_bfd != (bfd *) NULL
|
741 |
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
742 |
|
|
&& (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
|
743 |
|
|
{
|
744 |
|
|
reloc_entry->address += input_section->output_offset;
|
745 |
|
|
return bfd_reloc_ok;
|
746 |
|
|
}
|
747 |
|
|
|
748 |
|
|
if (output_bfd != NULL)
|
749 |
|
|
return bfd_reloc_ok;
|
750 |
|
|
|
751 |
|
|
relocation = symbol->value
|
752 |
|
|
+ symbol->section->output_section->vma + symbol->section->output_offset;
|
753 |
|
|
|
754 |
|
|
if ((r =
|
755 |
|
|
lm32_elf_final_gp (abfd, symbol, FALSE, msg, &gp)) == bfd_reloc_ok)
|
756 |
|
|
{
|
757 |
|
|
relocation = relocation + reloc_entry->addend - gp;
|
758 |
|
|
reloc_entry->addend = 0;
|
759 |
|
|
if ((signed) relocation < -32768 || (signed) relocation > 32767)
|
760 |
|
|
{
|
761 |
|
|
*msg = _("global pointer relative address out of range");
|
762 |
|
|
r = bfd_reloc_outofrange;
|
763 |
|
|
}
|
764 |
|
|
else
|
765 |
|
|
{
|
766 |
|
|
r = lm32_elf_do_gprel_relocate (abfd, reloc_entry->howto,
|
767 |
|
|
input_section,
|
768 |
|
|
data, reloc_entry->address,
|
769 |
|
|
relocation, reloc_entry->addend);
|
770 |
|
|
}
|
771 |
|
|
}
|
772 |
|
|
|
773 |
|
|
return r;
|
774 |
|
|
}
|
775 |
|
|
|
776 |
|
|
/* Find the segment number in which OSEC, and output section, is
|
777 |
|
|
located. */
|
778 |
|
|
|
779 |
|
|
static unsigned
|
780 |
|
|
_lm32fdpic_osec_to_segment (bfd *output_bfd, asection *osec)
|
781 |
|
|
{
|
782 |
|
|
struct elf_segment_map *m;
|
783 |
|
|
Elf_Internal_Phdr *p;
|
784 |
|
|
|
785 |
|
|
/* Find the segment that contains the output_section. */
|
786 |
|
|
for (m = elf_tdata (output_bfd)->segment_map,
|
787 |
|
|
p = elf_tdata (output_bfd)->phdr;
|
788 |
|
|
m != NULL;
|
789 |
|
|
m = m->next, p++)
|
790 |
|
|
{
|
791 |
|
|
int i;
|
792 |
|
|
|
793 |
|
|
for (i = m->count - 1; i >= 0; i--)
|
794 |
|
|
if (m->sections[i] == osec)
|
795 |
|
|
break;
|
796 |
|
|
|
797 |
|
|
if (i >= 0)
|
798 |
|
|
break;
|
799 |
|
|
}
|
800 |
|
|
|
801 |
|
|
return p - elf_tdata (output_bfd)->phdr;
|
802 |
|
|
}
|
803 |
|
|
|
804 |
|
|
/* Determine if an output section is read-only. */
|
805 |
|
|
|
806 |
|
|
inline static bfd_boolean
|
807 |
|
|
_lm32fdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
|
808 |
|
|
{
|
809 |
|
|
unsigned seg = _lm32fdpic_osec_to_segment (output_bfd, osec);
|
810 |
|
|
|
811 |
|
|
return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
|
812 |
|
|
}
|
813 |
|
|
|
814 |
|
|
/* Relocate a section */
|
815 |
|
|
|
816 |
|
|
static bfd_boolean
|
817 |
|
|
lm32_elf_relocate_section (bfd *output_bfd,
|
818 |
|
|
struct bfd_link_info *info,
|
819 |
|
|
bfd *input_bfd,
|
820 |
|
|
asection *input_section,
|
821 |
|
|
bfd_byte *contents,
|
822 |
|
|
Elf_Internal_Rela *relocs,
|
823 |
|
|
Elf_Internal_Sym *local_syms,
|
824 |
|
|
asection **local_sections)
|
825 |
|
|
{
|
826 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
827 |
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
|
828 |
|
|
Elf_Internal_Rela *rel, *relend;
|
829 |
|
|
struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info);
|
830 |
|
|
bfd *dynobj;
|
831 |
|
|
bfd_vma *local_got_offsets;
|
832 |
|
|
asection *sgot, *splt, *sreloc;
|
833 |
|
|
|
834 |
|
|
if (htab == NULL)
|
835 |
|
|
return FALSE;
|
836 |
|
|
|
837 |
|
|
dynobj = htab->root.dynobj;
|
838 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
839 |
|
|
|
840 |
|
|
sgot = htab->sgot;
|
841 |
|
|
splt = htab->splt;
|
842 |
|
|
sreloc = NULL;
|
843 |
|
|
|
844 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
845 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
846 |
|
|
|
847 |
|
|
rel = relocs;
|
848 |
|
|
relend = relocs + input_section->reloc_count;
|
849 |
|
|
for (; rel < relend; rel++)
|
850 |
|
|
{
|
851 |
|
|
reloc_howto_type *howto;
|
852 |
|
|
unsigned int r_type;
|
853 |
|
|
unsigned long r_symndx;
|
854 |
|
|
Elf_Internal_Sym *sym;
|
855 |
|
|
asection *sec;
|
856 |
|
|
struct elf_link_hash_entry *h;
|
857 |
|
|
bfd_vma relocation;
|
858 |
|
|
bfd_vma gp;
|
859 |
|
|
bfd_reloc_status_type r;
|
860 |
|
|
const char *name = NULL;
|
861 |
|
|
asection *osec;
|
862 |
|
|
|
863 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
864 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
865 |
|
|
|
866 |
|
|
if (r_type == R_LM32_GNU_VTENTRY
|
867 |
|
|
|| r_type == R_LM32_GNU_VTINHERIT )
|
868 |
|
|
continue;
|
869 |
|
|
|
870 |
|
|
h = NULL;
|
871 |
|
|
sym = NULL;
|
872 |
|
|
sec = NULL;
|
873 |
|
|
|
874 |
|
|
howto = lm32_elf_howto_table + r_type;
|
875 |
|
|
|
876 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
877 |
|
|
{
|
878 |
|
|
/* It's a local symbol. */
|
879 |
|
|
sym = local_syms + r_symndx;
|
880 |
|
|
osec = sec = local_sections[r_symndx];
|
881 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
882 |
|
|
name = bfd_elf_string_from_elf_section
|
883 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
884 |
|
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
885 |
|
|
}
|
886 |
|
|
else
|
887 |
|
|
{
|
888 |
|
|
/* It's a global symbol. */
|
889 |
|
|
bfd_boolean unresolved_reloc;
|
890 |
|
|
bfd_boolean warned;
|
891 |
|
|
|
892 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
893 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
894 |
|
|
h, sec, relocation,
|
895 |
|
|
unresolved_reloc, warned);
|
896 |
|
|
osec = sec;
|
897 |
|
|
name = h->root.root.string;
|
898 |
|
|
}
|
899 |
|
|
|
900 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
901 |
|
|
{
|
902 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
903 |
|
|
or sections discarded by a linker script, we just want the
|
904 |
|
|
section contents zeroed. Avoid any special processing. */
|
905 |
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
906 |
|
|
rel->r_info = 0;
|
907 |
|
|
rel->r_addend = 0;
|
908 |
|
|
continue;
|
909 |
|
|
}
|
910 |
|
|
|
911 |
|
|
if (info->relocatable)
|
912 |
|
|
{
|
913 |
|
|
/* This is a relocatable link. We don't have to change
|
914 |
|
|
anything, unless the reloc is against a section symbol,
|
915 |
|
|
in which case we have to adjust according to where the
|
916 |
|
|
section symbol winds up in the output section. */
|
917 |
|
|
if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
918 |
|
|
continue;
|
919 |
|
|
|
920 |
|
|
/* If partial_inplace, we need to store any additional addend
|
921 |
|
|
back in the section. */
|
922 |
|
|
if (! howto->partial_inplace)
|
923 |
|
|
continue;
|
924 |
|
|
|
925 |
|
|
/* Shouldn't reach here. */
|
926 |
|
|
abort ();
|
927 |
|
|
r = bfd_reloc_ok;
|
928 |
|
|
}
|
929 |
|
|
else
|
930 |
|
|
{
|
931 |
|
|
switch (howto->type)
|
932 |
|
|
{
|
933 |
|
|
case R_LM32_GPREL16:
|
934 |
|
|
if (!lm32_elf_assign_gp (output_bfd, &gp))
|
935 |
|
|
r = bfd_reloc_dangerous;
|
936 |
|
|
else
|
937 |
|
|
{
|
938 |
|
|
relocation = relocation + rel->r_addend - gp;
|
939 |
|
|
rel->r_addend = 0;
|
940 |
|
|
if ((signed)relocation < -32768 || (signed)relocation > 32767)
|
941 |
|
|
r = bfd_reloc_outofrange;
|
942 |
|
|
else
|
943 |
|
|
{
|
944 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd,
|
945 |
|
|
input_section, contents,
|
946 |
|
|
rel->r_offset, relocation,
|
947 |
|
|
rel->r_addend);
|
948 |
|
|
}
|
949 |
|
|
}
|
950 |
|
|
break;
|
951 |
|
|
case R_LM32_16_GOT:
|
952 |
|
|
/* Relocation is to the entry for this symbol in the global
|
953 |
|
|
offset table. */
|
954 |
|
|
BFD_ASSERT (sgot != NULL);
|
955 |
|
|
if (h != NULL)
|
956 |
|
|
{
|
957 |
|
|
bfd_boolean dyn;
|
958 |
|
|
bfd_vma off;
|
959 |
|
|
|
960 |
|
|
off = h->got.offset;
|
961 |
|
|
BFD_ASSERT (off != (bfd_vma) -1);
|
962 |
|
|
|
963 |
|
|
dyn = htab->root.dynamic_sections_created;
|
964 |
|
|
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|
965 |
|
|
|| (info->shared
|
966 |
|
|
&& (info->symbolic
|
967 |
|
|
|| h->dynindx == -1
|
968 |
|
|
|| h->forced_local)
|
969 |
|
|
&& h->def_regular))
|
970 |
|
|
{
|
971 |
|
|
/* This is actually a static link, or it is a
|
972 |
|
|
-Bsymbolic link and the symbol is defined
|
973 |
|
|
locally, or the symbol was forced to be local
|
974 |
|
|
because of a version file. We must initialize
|
975 |
|
|
this entry in the global offset table. Since the
|
976 |
|
|
offset must always be a multiple of 4, we use the
|
977 |
|
|
least significant bit to record whether we have
|
978 |
|
|
initialized it already.
|
979 |
|
|
|
980 |
|
|
When doing a dynamic link, we create a .rela.got
|
981 |
|
|
relocation entry to initialize the value. This
|
982 |
|
|
is done in the finish_dynamic_symbol routine. */
|
983 |
|
|
if ((off & 1) != 0)
|
984 |
|
|
off &= ~1;
|
985 |
|
|
else
|
986 |
|
|
{
|
987 |
|
|
/* Write entry in GOT */
|
988 |
|
|
bfd_put_32 (output_bfd, relocation,
|
989 |
|
|
sgot->contents + off);
|
990 |
|
|
/* Create entry in .rofixup pointing to GOT entry. */
|
991 |
|
|
if (IS_FDPIC (output_bfd) && h->root.type != bfd_link_hash_undefweak)
|
992 |
|
|
{
|
993 |
|
|
_lm32fdpic_add_rofixup (output_bfd,
|
994 |
|
|
lm32fdpic_fixup32_section
|
995 |
|
|
(info),
|
996 |
|
|
sgot->output_section->vma
|
997 |
|
|
+ sgot->output_offset
|
998 |
|
|
+ off);
|
999 |
|
|
}
|
1000 |
|
|
/* Mark GOT entry as having been written. */
|
1001 |
|
|
h->got.offset |= 1;
|
1002 |
|
|
}
|
1003 |
|
|
}
|
1004 |
|
|
|
1005 |
|
|
relocation = sgot->output_offset + off;
|
1006 |
|
|
}
|
1007 |
|
|
else
|
1008 |
|
|
{
|
1009 |
|
|
bfd_vma off;
|
1010 |
|
|
bfd_byte *loc;
|
1011 |
|
|
|
1012 |
|
|
BFD_ASSERT (local_got_offsets != NULL
|
1013 |
|
|
&& local_got_offsets[r_symndx] != (bfd_vma) -1);
|
1014 |
|
|
|
1015 |
|
|
/* Get offset into GOT table. */
|
1016 |
|
|
off = local_got_offsets[r_symndx];
|
1017 |
|
|
|
1018 |
|
|
/* The offset must always be a multiple of 4. We use
|
1019 |
|
|
the least significant bit to record whether we have
|
1020 |
|
|
already processed this entry. */
|
1021 |
|
|
if ((off & 1) != 0)
|
1022 |
|
|
off &= ~1;
|
1023 |
|
|
else
|
1024 |
|
|
{
|
1025 |
|
|
/* Write entry in GOT. */
|
1026 |
|
|
bfd_put_32 (output_bfd, relocation, sgot->contents + off);
|
1027 |
|
|
/* Create entry in .rofixup pointing to GOT entry. */
|
1028 |
|
|
if (IS_FDPIC (output_bfd))
|
1029 |
|
|
{
|
1030 |
|
|
_lm32fdpic_add_rofixup (output_bfd,
|
1031 |
|
|
lm32fdpic_fixup32_section
|
1032 |
|
|
(info),
|
1033 |
|
|
sgot->output_section->vma
|
1034 |
|
|
+ sgot->output_offset
|
1035 |
|
|
+ off);
|
1036 |
|
|
}
|
1037 |
|
|
|
1038 |
|
|
if (info->shared)
|
1039 |
|
|
{
|
1040 |
|
|
asection *srelgot;
|
1041 |
|
|
Elf_Internal_Rela outrel;
|
1042 |
|
|
|
1043 |
|
|
/* We need to generate a R_LM32_RELATIVE reloc
|
1044 |
|
|
for the dynamic linker. */
|
1045 |
|
|
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
1046 |
|
|
BFD_ASSERT (srelgot != NULL);
|
1047 |
|
|
|
1048 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
1049 |
|
|
+ sgot->output_offset
|
1050 |
|
|
+ off);
|
1051 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
|
1052 |
|
|
outrel.r_addend = relocation;
|
1053 |
|
|
loc = srelgot->contents;
|
1054 |
|
|
loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
|
1055 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
|
1056 |
|
|
++srelgot->reloc_count;
|
1057 |
|
|
}
|
1058 |
|
|
|
1059 |
|
|
local_got_offsets[r_symndx] |= 1;
|
1060 |
|
|
}
|
1061 |
|
|
|
1062 |
|
|
|
1063 |
|
|
relocation = sgot->output_offset + off;
|
1064 |
|
|
}
|
1065 |
|
|
|
1066 |
|
|
/* Addend should be zero. */
|
1067 |
|
|
if (rel->r_addend != 0)
|
1068 |
|
|
(*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT"));
|
1069 |
|
|
|
1070 |
|
|
r = _bfd_final_link_relocate (howto,
|
1071 |
|
|
input_bfd,
|
1072 |
|
|
input_section,
|
1073 |
|
|
contents,
|
1074 |
|
|
rel->r_offset,
|
1075 |
|
|
relocation,
|
1076 |
|
|
rel->r_addend);
|
1077 |
|
|
break;
|
1078 |
|
|
|
1079 |
|
|
case R_LM32_GOTOFF_LO16:
|
1080 |
|
|
case R_LM32_GOTOFF_HI16:
|
1081 |
|
|
/* Relocation is offset from GOT. */
|
1082 |
|
|
BFD_ASSERT (sgot != NULL);
|
1083 |
|
|
relocation -= sgot->output_section->vma;
|
1084 |
|
|
/* Account for sign-extension. */
|
1085 |
|
|
if ((r_type == R_LM32_GOTOFF_HI16)
|
1086 |
|
|
&& ((relocation + rel->r_addend) & 0x8000))
|
1087 |
|
|
rel->r_addend += 0x10000;
|
1088 |
|
|
r = _bfd_final_link_relocate (howto,
|
1089 |
|
|
input_bfd,
|
1090 |
|
|
input_section,
|
1091 |
|
|
contents,
|
1092 |
|
|
rel->r_offset,
|
1093 |
|
|
relocation,
|
1094 |
|
|
rel->r_addend);
|
1095 |
|
|
break;
|
1096 |
|
|
|
1097 |
|
|
case R_LM32_32:
|
1098 |
|
|
if (IS_FDPIC (output_bfd))
|
1099 |
|
|
{
|
1100 |
|
|
if ((!h) || (h && h->root.type != bfd_link_hash_undefweak))
|
1101 |
|
|
{
|
1102 |
|
|
/* Only create .rofixup entries for relocs in loadable sections. */
|
1103 |
|
|
if ((bfd_get_section_flags (output_bfd, input_section->output_section)
|
1104 |
|
|
& (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
|
1105 |
|
|
|
1106 |
|
|
{
|
1107 |
|
|
/* Check address to be modified is writable. */
|
1108 |
|
|
if (_lm32fdpic_osec_readonly_p (output_bfd,
|
1109 |
|
|
input_section
|
1110 |
|
|
->output_section))
|
1111 |
|
|
{
|
1112 |
|
|
info->callbacks->warning
|
1113 |
|
|
(info,
|
1114 |
|
|
_("cannot emit dynamic relocations in read-only section"),
|
1115 |
|
|
name, input_bfd, input_section, rel->r_offset);
|
1116 |
|
|
return FALSE;
|
1117 |
|
|
}
|
1118 |
|
|
/* Create entry in .rofixup section. */
|
1119 |
|
|
_lm32fdpic_add_rofixup (output_bfd,
|
1120 |
|
|
lm32fdpic_fixup32_section (info),
|
1121 |
|
|
input_section->output_section->vma
|
1122 |
|
|
+ input_section->output_offset
|
1123 |
|
|
+ rel->r_offset);
|
1124 |
|
|
}
|
1125 |
|
|
}
|
1126 |
|
|
}
|
1127 |
|
|
/* Fall through. */
|
1128 |
|
|
|
1129 |
|
|
default:
|
1130 |
|
|
r = _bfd_final_link_relocate (howto,
|
1131 |
|
|
input_bfd,
|
1132 |
|
|
input_section,
|
1133 |
|
|
contents,
|
1134 |
|
|
rel->r_offset,
|
1135 |
|
|
relocation,
|
1136 |
|
|
rel->r_addend);
|
1137 |
|
|
break;
|
1138 |
|
|
}
|
1139 |
|
|
}
|
1140 |
|
|
|
1141 |
|
|
if (r != bfd_reloc_ok)
|
1142 |
|
|
{
|
1143 |
|
|
const char *msg = NULL;
|
1144 |
|
|
arelent bfd_reloc;
|
1145 |
|
|
|
1146 |
|
|
lm32_info_to_howto_rela (input_bfd, &bfd_reloc, rel);
|
1147 |
|
|
howto = bfd_reloc.howto;
|
1148 |
|
|
|
1149 |
|
|
if (h != NULL)
|
1150 |
|
|
name = h->root.root.string;
|
1151 |
|
|
else
|
1152 |
|
|
{
|
1153 |
|
|
name = (bfd_elf_string_from_elf_section
|
1154 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
1155 |
|
|
if (name == NULL || *name == '\0')
|
1156 |
|
|
name = bfd_section_name (input_bfd, sec);
|
1157 |
|
|
}
|
1158 |
|
|
|
1159 |
|
|
switch (r)
|
1160 |
|
|
{
|
1161 |
|
|
case bfd_reloc_overflow:
|
1162 |
|
|
if ((h != NULL)
|
1163 |
|
|
&& (h->root.type == bfd_link_hash_undefweak))
|
1164 |
|
|
break;
|
1165 |
|
|
if (! ((*info->callbacks->reloc_overflow)
|
1166 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
1167 |
|
|
(bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
|
1168 |
|
|
return FALSE;
|
1169 |
|
|
break;
|
1170 |
|
|
|
1171 |
|
|
case bfd_reloc_undefined:
|
1172 |
|
|
if (! ((*info->callbacks->undefined_symbol)
|
1173 |
|
|
(info, name, input_bfd, input_section,
|
1174 |
|
|
rel->r_offset, TRUE)))
|
1175 |
|
|
return FALSE;
|
1176 |
|
|
break;
|
1177 |
|
|
|
1178 |
|
|
case bfd_reloc_outofrange:
|
1179 |
|
|
msg = _("internal error: out of range error");
|
1180 |
|
|
goto common_error;
|
1181 |
|
|
|
1182 |
|
|
case bfd_reloc_notsupported:
|
1183 |
|
|
msg = _("internal error: unsupported relocation error");
|
1184 |
|
|
goto common_error;
|
1185 |
|
|
|
1186 |
|
|
case bfd_reloc_dangerous:
|
1187 |
|
|
msg = _("internal error: dangerous error");
|
1188 |
|
|
goto common_error;
|
1189 |
|
|
|
1190 |
|
|
default:
|
1191 |
|
|
msg = _("internal error: unknown error");
|
1192 |
|
|
/* fall through */
|
1193 |
|
|
|
1194 |
|
|
common_error:
|
1195 |
|
|
if (!((*info->callbacks->warning)
|
1196 |
|
|
(info, msg, name, input_bfd, input_section,
|
1197 |
|
|
rel->r_offset)))
|
1198 |
|
|
return FALSE;
|
1199 |
|
|
break;
|
1200 |
|
|
}
|
1201 |
|
|
}
|
1202 |
|
|
}
|
1203 |
|
|
|
1204 |
|
|
return TRUE;
|
1205 |
|
|
}
|
1206 |
|
|
|
1207 |
|
|
static asection *
|
1208 |
|
|
lm32_elf_gc_mark_hook (asection *sec,
|
1209 |
|
|
struct bfd_link_info *info,
|
1210 |
|
|
Elf_Internal_Rela *rel,
|
1211 |
|
|
struct elf_link_hash_entry *h,
|
1212 |
|
|
Elf_Internal_Sym *sym)
|
1213 |
|
|
{
|
1214 |
|
|
if (h != NULL)
|
1215 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
1216 |
|
|
{
|
1217 |
|
|
case R_LM32_GNU_VTINHERIT:
|
1218 |
|
|
case R_LM32_GNU_VTENTRY:
|
1219 |
|
|
return NULL;
|
1220 |
|
|
}
|
1221 |
|
|
|
1222 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
1223 |
|
|
}
|
1224 |
|
|
|
1225 |
|
|
static bfd_boolean
|
1226 |
|
|
lm32_elf_gc_sweep_hook (bfd *abfd,
|
1227 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
1228 |
|
|
asection *sec,
|
1229 |
|
|
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
|
1230 |
|
|
{
|
1231 |
|
|
/* Update the got entry reference counts for the section being removed. */
|
1232 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1233 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
1234 |
|
|
bfd_signed_vma *local_got_refcounts;
|
1235 |
|
|
const Elf_Internal_Rela *rel, *relend;
|
1236 |
|
|
|
1237 |
|
|
elf_section_data (sec)->local_dynrel = NULL;
|
1238 |
|
|
|
1239 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
1240 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
1241 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
1242 |
|
|
|
1243 |
|
|
relend = relocs + sec->reloc_count;
|
1244 |
|
|
for (rel = relocs; rel < relend; rel++)
|
1245 |
|
|
{
|
1246 |
|
|
unsigned long r_symndx;
|
1247 |
|
|
struct elf_link_hash_entry *h = NULL;
|
1248 |
|
|
|
1249 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
1250 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
1251 |
|
|
{
|
1252 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
1253 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
1254 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
1255 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
1256 |
|
|
}
|
1257 |
|
|
|
1258 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
1259 |
|
|
{
|
1260 |
|
|
case R_LM32_16_GOT:
|
1261 |
|
|
if (h != NULL)
|
1262 |
|
|
{
|
1263 |
|
|
if (h->got.refcount > 0)
|
1264 |
|
|
h->got.refcount--;
|
1265 |
|
|
}
|
1266 |
|
|
else
|
1267 |
|
|
{
|
1268 |
|
|
if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
|
1269 |
|
|
local_got_refcounts[r_symndx]--;
|
1270 |
|
|
}
|
1271 |
|
|
break;
|
1272 |
|
|
|
1273 |
|
|
default:
|
1274 |
|
|
break;
|
1275 |
|
|
}
|
1276 |
|
|
}
|
1277 |
|
|
return TRUE;
|
1278 |
|
|
}
|
1279 |
|
|
|
1280 |
|
|
/* Look through the relocs for a section during the first phase. */
|
1281 |
|
|
|
1282 |
|
|
static bfd_boolean
|
1283 |
|
|
lm32_elf_check_relocs (bfd *abfd,
|
1284 |
|
|
struct bfd_link_info *info,
|
1285 |
|
|
asection *sec,
|
1286 |
|
|
const Elf_Internal_Rela *relocs)
|
1287 |
|
|
{
|
1288 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1289 |
|
|
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
1290 |
|
|
const Elf_Internal_Rela *rel;
|
1291 |
|
|
const Elf_Internal_Rela *rel_end;
|
1292 |
|
|
struct elf_lm32_link_hash_table *htab;
|
1293 |
|
|
bfd *dynobj;
|
1294 |
|
|
bfd_vma *local_got_offsets;
|
1295 |
|
|
asection *sgot, *srelgot, *sreloc;
|
1296 |
|
|
|
1297 |
|
|
if (info->relocatable)
|
1298 |
|
|
return TRUE;
|
1299 |
|
|
|
1300 |
|
|
sgot = srelgot = sreloc = NULL;
|
1301 |
|
|
|
1302 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
1303 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
1304 |
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
|
1305 |
|
|
if (!elf_bad_symtab (abfd))
|
1306 |
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
1307 |
|
|
|
1308 |
|
|
htab = lm32_elf_hash_table (info);
|
1309 |
|
|
if (htab == NULL)
|
1310 |
|
|
return FALSE;
|
1311 |
|
|
|
1312 |
|
|
dynobj = htab->root.dynobj;
|
1313 |
|
|
local_got_offsets = elf_local_got_offsets (abfd);
|
1314 |
|
|
|
1315 |
|
|
rel_end = relocs + sec->reloc_count;
|
1316 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
1317 |
|
|
{
|
1318 |
|
|
int r_type;
|
1319 |
|
|
struct elf_link_hash_entry *h;
|
1320 |
|
|
unsigned long r_symndx;
|
1321 |
|
|
|
1322 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
1323 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
1324 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
1325 |
|
|
h = NULL;
|
1326 |
|
|
else
|
1327 |
|
|
{
|
1328 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
1329 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
1330 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
1331 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
1332 |
|
|
}
|
1333 |
|
|
|
1334 |
|
|
/* Some relocs require a global offset table. */
|
1335 |
|
|
if (htab->sgot == NULL)
|
1336 |
|
|
{
|
1337 |
|
|
switch (r_type)
|
1338 |
|
|
{
|
1339 |
|
|
case R_LM32_16_GOT:
|
1340 |
|
|
case R_LM32_GOTOFF_HI16:
|
1341 |
|
|
case R_LM32_GOTOFF_LO16:
|
1342 |
|
|
if (dynobj == NULL)
|
1343 |
|
|
htab->root.dynobj = dynobj = abfd;
|
1344 |
|
|
if (! create_got_section (dynobj, info))
|
1345 |
|
|
return FALSE;
|
1346 |
|
|
break;
|
1347 |
|
|
}
|
1348 |
|
|
}
|
1349 |
|
|
|
1350 |
|
|
/* Some relocs require a rofixup table. */
|
1351 |
|
|
if (IS_FDPIC (abfd))
|
1352 |
|
|
{
|
1353 |
|
|
switch (r_type)
|
1354 |
|
|
{
|
1355 |
|
|
case R_LM32_32:
|
1356 |
|
|
/* FDPIC requires a GOT if there is a .rofixup section
|
1357 |
|
|
(Normal ELF doesn't). */
|
1358 |
|
|
if (dynobj == NULL)
|
1359 |
|
|
htab->root.dynobj = dynobj = abfd;
|
1360 |
|
|
if (! create_got_section (dynobj, info))
|
1361 |
|
|
return FALSE;
|
1362 |
|
|
/* Create .rofixup section */
|
1363 |
|
|
if (htab->sfixup32 == NULL)
|
1364 |
|
|
{
|
1365 |
|
|
if (! create_rofixup_section (abfd, info))
|
1366 |
|
|
return FALSE;
|
1367 |
|
|
}
|
1368 |
|
|
break;
|
1369 |
|
|
case R_LM32_16_GOT:
|
1370 |
|
|
case R_LM32_GOTOFF_HI16:
|
1371 |
|
|
case R_LM32_GOTOFF_LO16:
|
1372 |
|
|
/* Create .rofixup section. */
|
1373 |
|
|
if (htab->sfixup32 == NULL)
|
1374 |
|
|
{
|
1375 |
|
|
if (! create_rofixup_section (abfd, info))
|
1376 |
|
|
return FALSE;
|
1377 |
|
|
}
|
1378 |
|
|
break;
|
1379 |
|
|
}
|
1380 |
|
|
}
|
1381 |
|
|
|
1382 |
|
|
switch (r_type)
|
1383 |
|
|
{
|
1384 |
|
|
case R_LM32_16_GOT:
|
1385 |
|
|
if (h != NULL)
|
1386 |
|
|
h->got.refcount += 1;
|
1387 |
|
|
else
|
1388 |
|
|
{
|
1389 |
|
|
bfd_signed_vma *local_got_refcounts;
|
1390 |
|
|
|
1391 |
|
|
/* This is a global offset table entry for a local symbol. */
|
1392 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
1393 |
|
|
if (local_got_refcounts == NULL)
|
1394 |
|
|
{
|
1395 |
|
|
bfd_size_type size;
|
1396 |
|
|
|
1397 |
|
|
size = symtab_hdr->sh_info;
|
1398 |
|
|
size *= sizeof (bfd_signed_vma);
|
1399 |
|
|
local_got_refcounts = bfd_zalloc (abfd, size);
|
1400 |
|
|
if (local_got_refcounts == NULL)
|
1401 |
|
|
return FALSE;
|
1402 |
|
|
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
1403 |
|
|
}
|
1404 |
|
|
local_got_refcounts[r_symndx] += 1;
|
1405 |
|
|
}
|
1406 |
|
|
break;
|
1407 |
|
|
|
1408 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
1409 |
|
|
Reconstruct it for later use during GC. */
|
1410 |
|
|
case R_LM32_GNU_VTINHERIT:
|
1411 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
1412 |
|
|
return FALSE;
|
1413 |
|
|
break;
|
1414 |
|
|
|
1415 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
1416 |
|
|
used. Record for later use during GC. */
|
1417 |
|
|
case R_LM32_GNU_VTENTRY:
|
1418 |
|
|
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
1419 |
|
|
return FALSE;
|
1420 |
|
|
break;
|
1421 |
|
|
|
1422 |
|
|
}
|
1423 |
|
|
}
|
1424 |
|
|
|
1425 |
|
|
return TRUE;
|
1426 |
|
|
}
|
1427 |
|
|
|
1428 |
|
|
/* Finish up the dynamic sections. */
|
1429 |
|
|
|
1430 |
|
|
static bfd_boolean
|
1431 |
|
|
lm32_elf_finish_dynamic_sections (bfd *output_bfd,
|
1432 |
|
|
struct bfd_link_info *info)
|
1433 |
|
|
{
|
1434 |
|
|
struct elf_lm32_link_hash_table *htab;
|
1435 |
|
|
bfd *dynobj;
|
1436 |
|
|
asection *sdyn;
|
1437 |
|
|
asection *sgot;
|
1438 |
|
|
|
1439 |
|
|
htab = lm32_elf_hash_table (info);
|
1440 |
|
|
if (htab == NULL)
|
1441 |
|
|
return FALSE;
|
1442 |
|
|
|
1443 |
|
|
dynobj = htab->root.dynobj;
|
1444 |
|
|
|
1445 |
|
|
sgot = htab->sgotplt;
|
1446 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
1447 |
|
|
|
1448 |
|
|
if (htab->root.dynamic_sections_created)
|
1449 |
|
|
{
|
1450 |
|
|
asection *splt;
|
1451 |
|
|
Elf32_External_Dyn *dyncon, *dynconend;
|
1452 |
|
|
|
1453 |
|
|
BFD_ASSERT (sgot != NULL && sdyn != NULL);
|
1454 |
|
|
|
1455 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
1456 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
1457 |
|
|
|
1458 |
|
|
for (; dyncon < dynconend; dyncon++)
|
1459 |
|
|
{
|
1460 |
|
|
Elf_Internal_Dyn dyn;
|
1461 |
|
|
const char *name;
|
1462 |
|
|
asection *s;
|
1463 |
|
|
|
1464 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
1465 |
|
|
|
1466 |
|
|
switch (dyn.d_tag)
|
1467 |
|
|
{
|
1468 |
|
|
default:
|
1469 |
|
|
break;
|
1470 |
|
|
|
1471 |
|
|
case DT_PLTGOT:
|
1472 |
|
|
name = ".got";
|
1473 |
|
|
s = htab->sgot->output_section;
|
1474 |
|
|
goto get_vma;
|
1475 |
|
|
case DT_JMPREL:
|
1476 |
|
|
name = ".rela.plt";
|
1477 |
|
|
s = htab->srelplt->output_section;
|
1478 |
|
|
get_vma:
|
1479 |
|
|
BFD_ASSERT (s != NULL);
|
1480 |
|
|
dyn.d_un.d_ptr = s->vma;
|
1481 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
1482 |
|
|
break;
|
1483 |
|
|
|
1484 |
|
|
case DT_PLTRELSZ:
|
1485 |
|
|
s = htab->srelplt->output_section;
|
1486 |
|
|
BFD_ASSERT (s != NULL);
|
1487 |
|
|
dyn.d_un.d_val = s->size;
|
1488 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
1489 |
|
|
break;
|
1490 |
|
|
|
1491 |
|
|
case DT_RELASZ:
|
1492 |
|
|
/* My reading of the SVR4 ABI indicates that the
|
1493 |
|
|
procedure linkage table relocs (DT_JMPREL) should be
|
1494 |
|
|
included in the overall relocs (DT_RELA). This is
|
1495 |
|
|
what Solaris does. However, UnixWare can not handle
|
1496 |
|
|
that case. Therefore, we override the DT_RELASZ entry
|
1497 |
|
|
here to make it not include the JMPREL relocs. Since
|
1498 |
|
|
the linker script arranges for .rela.plt to follow all
|
1499 |
|
|
other relocation sections, we don't have to worry
|
1500 |
|
|
about changing the DT_RELA entry. */
|
1501 |
|
|
if (htab->srelplt != NULL)
|
1502 |
|
|
{
|
1503 |
|
|
s = htab->srelplt->output_section;
|
1504 |
|
|
dyn.d_un.d_val -= s->size;
|
1505 |
|
|
}
|
1506 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
1507 |
|
|
break;
|
1508 |
|
|
}
|
1509 |
|
|
}
|
1510 |
|
|
|
1511 |
|
|
/* Fill in the first entry in the procedure linkage table. */
|
1512 |
|
|
splt = htab->splt;
|
1513 |
|
|
if (splt && splt->size > 0)
|
1514 |
|
|
{
|
1515 |
|
|
if (info->shared)
|
1516 |
|
|
{
|
1517 |
|
|
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
|
1518 |
|
|
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
|
1519 |
|
|
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
|
1520 |
|
|
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
|
1521 |
|
|
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
|
1522 |
|
|
}
|
1523 |
|
|
else
|
1524 |
|
|
{
|
1525 |
|
|
unsigned long addr;
|
1526 |
|
|
/* addr = .got + 4 */
|
1527 |
|
|
addr = sgot->output_section->vma + sgot->output_offset + 4;
|
1528 |
|
|
bfd_put_32 (output_bfd,
|
1529 |
|
|
PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
|
1530 |
|
|
splt->contents);
|
1531 |
|
|
bfd_put_32 (output_bfd,
|
1532 |
|
|
PLT0_ENTRY_WORD1 | (addr & 0xffff),
|
1533 |
|
|
splt->contents + 4);
|
1534 |
|
|
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
|
1535 |
|
|
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
|
1536 |
|
|
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
|
1537 |
|
|
}
|
1538 |
|
|
|
1539 |
|
|
elf_section_data (splt->output_section)->this_hdr.sh_entsize =
|
1540 |
|
|
PLT_ENTRY_SIZE;
|
1541 |
|
|
}
|
1542 |
|
|
}
|
1543 |
|
|
|
1544 |
|
|
/* Fill in the first three entries in the global offset table. */
|
1545 |
|
|
if (sgot && sgot->size > 0)
|
1546 |
|
|
{
|
1547 |
|
|
if (sdyn == NULL)
|
1548 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
1549 |
|
|
else
|
1550 |
|
|
bfd_put_32 (output_bfd,
|
1551 |
|
|
sdyn->output_section->vma + sdyn->output_offset,
|
1552 |
|
|
sgot->contents);
|
1553 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
|
1554 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
|
1555 |
|
|
|
1556 |
|
|
/* FIXME: This can be null if create_dynamic_sections wasn't called. */
|
1557 |
|
|
if (elf_section_data (sgot->output_section) != NULL)
|
1558 |
|
|
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
1559 |
|
|
}
|
1560 |
|
|
|
1561 |
|
|
if (lm32fdpic_fixup32_section (info))
|
1562 |
|
|
{
|
1563 |
|
|
struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
|
1564 |
|
|
bfd_vma got_value = hgot->root.u.def.value
|
1565 |
|
|
+ hgot->root.u.def.section->output_section->vma
|
1566 |
|
|
+ hgot->root.u.def.section->output_offset;
|
1567 |
|
|
struct bfd_link_hash_entry *hend;
|
1568 |
|
|
|
1569 |
|
|
/* Last entry is pointer to GOT. */
|
1570 |
|
|
_lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value);
|
1571 |
|
|
|
1572 |
|
|
/* Check we wrote enough entries. */
|
1573 |
|
|
if (lm32fdpic_fixup32_section (info)->size
|
1574 |
|
|
!= (lm32fdpic_fixup32_section (info)->reloc_count * 4))
|
1575 |
|
|
{
|
1576 |
|
|
(*_bfd_error_handler)
|
1577 |
|
|
("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
|
1578 |
|
|
lm32fdpic_fixup32_section (info)->size/4,
|
1579 |
|
|
lm32fdpic_fixup32_section (info)->reloc_count);
|
1580 |
|
|
return FALSE;
|
1581 |
|
|
}
|
1582 |
|
|
|
1583 |
|
|
hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__",
|
1584 |
|
|
FALSE, FALSE, TRUE);
|
1585 |
|
|
if (hend
|
1586 |
|
|
&& (hend->type == bfd_link_hash_defined
|
1587 |
|
|
|| hend->type == bfd_link_hash_defweak))
|
1588 |
|
|
{
|
1589 |
|
|
bfd_vma value =
|
1590 |
|
|
lm32fdpic_fixup32_section (info)->output_section->vma
|
1591 |
|
|
+ lm32fdpic_fixup32_section (info)->output_offset
|
1592 |
|
|
+ lm32fdpic_fixup32_section (info)->size
|
1593 |
|
|
- hend->u.def.section->output_section->vma
|
1594 |
|
|
- hend->u.def.section->output_offset;
|
1595 |
|
|
BFD_ASSERT (hend->u.def.value == value);
|
1596 |
|
|
if (hend->u.def.value != value)
|
1597 |
|
|
{
|
1598 |
|
|
(*_bfd_error_handler)
|
1599 |
|
|
("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value);
|
1600 |
|
|
return FALSE;
|
1601 |
|
|
}
|
1602 |
|
|
}
|
1603 |
|
|
}
|
1604 |
|
|
|
1605 |
|
|
return TRUE;
|
1606 |
|
|
}
|
1607 |
|
|
|
1608 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
1609 |
|
|
dynamic sections here. */
|
1610 |
|
|
|
1611 |
|
|
static bfd_boolean
|
1612 |
|
|
lm32_elf_finish_dynamic_symbol (bfd *output_bfd,
|
1613 |
|
|
struct bfd_link_info *info,
|
1614 |
|
|
struct elf_link_hash_entry *h,
|
1615 |
|
|
Elf_Internal_Sym *sym)
|
1616 |
|
|
{
|
1617 |
|
|
struct elf_lm32_link_hash_table *htab;
|
1618 |
|
|
bfd *dynobj;
|
1619 |
|
|
bfd_byte *loc;
|
1620 |
|
|
|
1621 |
|
|
htab = lm32_elf_hash_table (info);
|
1622 |
|
|
if (htab == NULL)
|
1623 |
|
|
return FALSE;
|
1624 |
|
|
|
1625 |
|
|
dynobj = htab->root.dynobj;
|
1626 |
|
|
|
1627 |
|
|
if (h->plt.offset != (bfd_vma) -1)
|
1628 |
|
|
{
|
1629 |
|
|
asection *splt;
|
1630 |
|
|
asection *sgot;
|
1631 |
|
|
asection *srela;
|
1632 |
|
|
|
1633 |
|
|
bfd_vma plt_index;
|
1634 |
|
|
bfd_vma got_offset;
|
1635 |
|
|
Elf_Internal_Rela rela;
|
1636 |
|
|
|
1637 |
|
|
/* This symbol has an entry in the procedure linkage table. Set
|
1638 |
|
|
it up. */
|
1639 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
1640 |
|
|
|
1641 |
|
|
splt = htab->splt;
|
1642 |
|
|
sgot = htab->sgotplt;
|
1643 |
|
|
srela = htab->srelplt;
|
1644 |
|
|
BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
|
1645 |
|
|
|
1646 |
|
|
/* Get the index in the procedure linkage table which
|
1647 |
|
|
corresponds to this symbol. This is the index of this symbol
|
1648 |
|
|
in all the symbols for which we are making plt entries. The
|
1649 |
|
|
first entry in the procedure linkage table is reserved. */
|
1650 |
|
|
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
|
1651 |
|
|
|
1652 |
|
|
/* Get the offset into the .got table of the entry that
|
1653 |
|
|
corresponds to this function. Each .got entry is 4 bytes.
|
1654 |
|
|
The first three are reserved. */
|
1655 |
|
|
got_offset = (plt_index + 3) * 4;
|
1656 |
|
|
|
1657 |
|
|
/* Fill in the entry in the procedure linkage table. */
|
1658 |
|
|
if (! info->shared)
|
1659 |
|
|
{
|
1660 |
|
|
/* TODO */
|
1661 |
|
|
}
|
1662 |
|
|
else
|
1663 |
|
|
{
|
1664 |
|
|
/* TODO */
|
1665 |
|
|
}
|
1666 |
|
|
|
1667 |
|
|
/* Fill in the entry in the global offset table. */
|
1668 |
|
|
bfd_put_32 (output_bfd,
|
1669 |
|
|
(splt->output_section->vma
|
1670 |
|
|
+ splt->output_offset
|
1671 |
|
|
+ h->plt.offset
|
1672 |
|
|
+ 12), /* same offset */
|
1673 |
|
|
sgot->contents + got_offset);
|
1674 |
|
|
|
1675 |
|
|
/* Fill in the entry in the .rela.plt section. */
|
1676 |
|
|
rela.r_offset = (sgot->output_section->vma
|
1677 |
|
|
+ sgot->output_offset
|
1678 |
|
|
+ got_offset);
|
1679 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT);
|
1680 |
|
|
rela.r_addend = 0;
|
1681 |
|
|
loc = srela->contents;
|
1682 |
|
|
loc += plt_index * sizeof (Elf32_External_Rela);
|
1683 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
1684 |
|
|
|
1685 |
|
|
if (!h->def_regular)
|
1686 |
|
|
{
|
1687 |
|
|
/* Mark the symbol as undefined, rather than as defined in
|
1688 |
|
|
the .plt section. Leave the value alone. */
|
1689 |
|
|
sym->st_shndx = SHN_UNDEF;
|
1690 |
|
|
}
|
1691 |
|
|
|
1692 |
|
|
}
|
1693 |
|
|
|
1694 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
1695 |
|
|
{
|
1696 |
|
|
asection *sgot;
|
1697 |
|
|
asection *srela;
|
1698 |
|
|
Elf_Internal_Rela rela;
|
1699 |
|
|
|
1700 |
|
|
/* This symbol has an entry in the global offset table. Set it
|
1701 |
|
|
up. */
|
1702 |
|
|
sgot = htab->sgot;
|
1703 |
|
|
srela = htab->srelgot;
|
1704 |
|
|
BFD_ASSERT (sgot != NULL && srela != NULL);
|
1705 |
|
|
|
1706 |
|
|
rela.r_offset = (sgot->output_section->vma
|
1707 |
|
|
+ sgot->output_offset
|
1708 |
|
|
+ (h->got.offset &~ 1));
|
1709 |
|
|
|
1710 |
|
|
/* If this is a -Bsymbolic link, and the symbol is defined
|
1711 |
|
|
locally, we just want to emit a RELATIVE reloc. Likewise if
|
1712 |
|
|
the symbol was forced to be local because of a version file.
|
1713 |
|
|
The entry in the global offset table will already have been
|
1714 |
|
|
initialized in the relocate_section function. */
|
1715 |
|
|
if (info->shared
|
1716 |
|
|
&& (info->symbolic
|
1717 |
|
|
|| h->dynindx == -1
|
1718 |
|
|
|| h->forced_local)
|
1719 |
|
|
&& h->def_regular)
|
1720 |
|
|
{
|
1721 |
|
|
rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
|
1722 |
|
|
rela.r_addend = (h->root.u.def.value
|
1723 |
|
|
+ h->root.u.def.section->output_section->vma
|
1724 |
|
|
+ h->root.u.def.section->output_offset);
|
1725 |
|
|
}
|
1726 |
|
|
else
|
1727 |
|
|
{
|
1728 |
|
|
BFD_ASSERT ((h->got.offset & 1) == 0);
|
1729 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
|
1730 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT);
|
1731 |
|
|
rela.r_addend = 0;
|
1732 |
|
|
}
|
1733 |
|
|
|
1734 |
|
|
loc = srela->contents;
|
1735 |
|
|
loc += srela->reloc_count * sizeof (Elf32_External_Rela);
|
1736 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
1737 |
|
|
++srela->reloc_count;
|
1738 |
|
|
}
|
1739 |
|
|
|
1740 |
|
|
if (h->needs_copy)
|
1741 |
|
|
{
|
1742 |
|
|
asection *s;
|
1743 |
|
|
Elf_Internal_Rela rela;
|
1744 |
|
|
|
1745 |
|
|
/* This symbols needs a copy reloc. Set it up. */
|
1746 |
|
|
BFD_ASSERT (h->dynindx != -1
|
1747 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
1748 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
1749 |
|
|
|
1750 |
|
|
s = bfd_get_section_by_name (h->root.u.def.section->owner,
|
1751 |
|
|
".rela.bss");
|
1752 |
|
|
BFD_ASSERT (s != NULL);
|
1753 |
|
|
|
1754 |
|
|
rela.r_offset = (h->root.u.def.value
|
1755 |
|
|
+ h->root.u.def.section->output_section->vma
|
1756 |
|
|
+ h->root.u.def.section->output_offset);
|
1757 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY);
|
1758 |
|
|
rela.r_addend = 0;
|
1759 |
|
|
loc = s->contents;
|
1760 |
|
|
loc += s->reloc_count * sizeof (Elf32_External_Rela);
|
1761 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
1762 |
|
|
++s->reloc_count;
|
1763 |
|
|
}
|
1764 |
|
|
|
1765 |
|
|
/* Mark some specially defined symbols as absolute. */
|
1766 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
1767 |
|
|
|| h == htab->root.hgot)
|
1768 |
|
|
sym->st_shndx = SHN_ABS;
|
1769 |
|
|
|
1770 |
|
|
return TRUE;
|
1771 |
|
|
}
|
1772 |
|
|
|
1773 |
|
|
static enum elf_reloc_type_class
|
1774 |
|
|
lm32_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
1775 |
|
|
{
|
1776 |
|
|
switch ((int) ELF32_R_TYPE (rela->r_info))
|
1777 |
|
|
{
|
1778 |
|
|
case R_LM32_RELATIVE: return reloc_class_relative;
|
1779 |
|
|
case R_LM32_JMP_SLOT: return reloc_class_plt;
|
1780 |
|
|
case R_LM32_COPY: return reloc_class_copy;
|
1781 |
|
|
default: return reloc_class_normal;
|
1782 |
|
|
}
|
1783 |
|
|
}
|
1784 |
|
|
|
1785 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
1786 |
|
|
regular object. The current definition is in some section of the
|
1787 |
|
|
dynamic object, but we're not including those sections. We have to
|
1788 |
|
|
change the definition to something the rest of the link can
|
1789 |
|
|
understand. */
|
1790 |
|
|
|
1791 |
|
|
static bfd_boolean
|
1792 |
|
|
lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
1793 |
|
|
struct elf_link_hash_entry *h)
|
1794 |
|
|
{
|
1795 |
|
|
struct elf_lm32_link_hash_table *htab;
|
1796 |
|
|
struct elf_lm32_link_hash_entry *eh;
|
1797 |
|
|
struct elf_lm32_dyn_relocs *p;
|
1798 |
|
|
bfd *dynobj;
|
1799 |
|
|
asection *s;
|
1800 |
|
|
|
1801 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
1802 |
|
|
|
1803 |
|
|
/* Make sure we know what is going on here. */
|
1804 |
|
|
BFD_ASSERT (dynobj != NULL
|
1805 |
|
|
&& (h->needs_plt
|
1806 |
|
|
|| h->u.weakdef != NULL
|
1807 |
|
|
|| (h->def_dynamic
|
1808 |
|
|
&& h->ref_regular
|
1809 |
|
|
&& !h->def_regular)));
|
1810 |
|
|
|
1811 |
|
|
/* If this is a function, put it in the procedure linkage table. We
|
1812 |
|
|
will fill in the contents of the procedure linkage table later,
|
1813 |
|
|
when we know the address of the .got section. */
|
1814 |
|
|
if (h->type == STT_FUNC
|
1815 |
|
|
|| h->needs_plt)
|
1816 |
|
|
{
|
1817 |
|
|
if (! info->shared
|
1818 |
|
|
&& !h->def_dynamic
|
1819 |
|
|
&& !h->ref_dynamic
|
1820 |
|
|
&& h->root.type != bfd_link_hash_undefweak
|
1821 |
|
|
&& h->root.type != bfd_link_hash_undefined)
|
1822 |
|
|
{
|
1823 |
|
|
/* This case can occur if we saw a PLT reloc in an input
|
1824 |
|
|
file, but the symbol was never referred to by a dynamic
|
1825 |
|
|
object. In such a case, we don't actually need to build
|
1826 |
|
|
a procedure linkage table, and we can just do a PCREL
|
1827 |
|
|
reloc instead. */
|
1828 |
|
|
h->plt.offset = (bfd_vma) -1;
|
1829 |
|
|
h->needs_plt = 0;
|
1830 |
|
|
}
|
1831 |
|
|
|
1832 |
|
|
return TRUE;
|
1833 |
|
|
}
|
1834 |
|
|
else
|
1835 |
|
|
h->plt.offset = (bfd_vma) -1;
|
1836 |
|
|
|
1837 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
1838 |
|
|
processor independent code will have arranged for us to see the
|
1839 |
|
|
real definition first, and we can just use the same value. */
|
1840 |
|
|
if (h->u.weakdef != NULL)
|
1841 |
|
|
{
|
1842 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
1843 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
1844 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
1845 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
1846 |
|
|
return TRUE;
|
1847 |
|
|
}
|
1848 |
|
|
|
1849 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
1850 |
|
|
is not a function. */
|
1851 |
|
|
|
1852 |
|
|
/* If we are creating a shared library, we must presume that the
|
1853 |
|
|
only references to the symbol are via the global offset table.
|
1854 |
|
|
For such cases we need not do anything here; the relocations will
|
1855 |
|
|
be handled correctly by relocate_section. */
|
1856 |
|
|
if (info->shared)
|
1857 |
|
|
return TRUE;
|
1858 |
|
|
|
1859 |
|
|
/* If there are no references to this symbol that do not use the
|
1860 |
|
|
GOT, we don't need to generate a copy reloc. */
|
1861 |
|
|
if (!h->non_got_ref)
|
1862 |
|
|
return TRUE;
|
1863 |
|
|
|
1864 |
|
|
/* If -z nocopyreloc was given, we won't generate them either. */
|
1865 |
|
|
if (info->nocopyreloc)
|
1866 |
|
|
{
|
1867 |
|
|
h->non_got_ref = 0;
|
1868 |
|
|
return TRUE;
|
1869 |
|
|
}
|
1870 |
|
|
|
1871 |
|
|
eh = (struct elf_lm32_link_hash_entry *) h;
|
1872 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
1873 |
|
|
{
|
1874 |
|
|
s = p->sec->output_section;
|
1875 |
|
|
if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
|
1876 |
|
|
break;
|
1877 |
|
|
}
|
1878 |
|
|
|
1879 |
|
|
/* If we didn't find any dynamic relocs in sections which needs the
|
1880 |
|
|
copy reloc, then we'll be keeping the dynamic relocs and avoiding
|
1881 |
|
|
the copy reloc. */
|
1882 |
|
|
if (p == NULL)
|
1883 |
|
|
{
|
1884 |
|
|
h->non_got_ref = 0;
|
1885 |
|
|
return TRUE;
|
1886 |
|
|
}
|
1887 |
|
|
|
1888 |
|
|
if (h->size == 0)
|
1889 |
|
|
{
|
1890 |
|
|
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
|
1891 |
|
|
h->root.root.string);
|
1892 |
|
|
return TRUE;
|
1893 |
|
|
}
|
1894 |
|
|
|
1895 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
1896 |
|
|
become part of the .bss section of the executable. There will be
|
1897 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
1898 |
|
|
object will contain position independent code, so all references
|
1899 |
|
|
from the dynamic object to this symbol will go through the global
|
1900 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
1901 |
|
|
determine the address it must put in the global offset table, so
|
1902 |
|
|
both the dynamic object and the regular object will refer to the
|
1903 |
|
|
same memory location for the variable. */
|
1904 |
|
|
|
1905 |
|
|
htab = lm32_elf_hash_table (info);
|
1906 |
|
|
if (htab == NULL)
|
1907 |
|
|
return FALSE;
|
1908 |
|
|
|
1909 |
|
|
s = htab->sdynbss;
|
1910 |
|
|
BFD_ASSERT (s != NULL);
|
1911 |
|
|
|
1912 |
|
|
/* We must generate a R_LM32_COPY reloc to tell the dynamic linker
|
1913 |
|
|
to copy the initial value out of the dynamic object and into the
|
1914 |
|
|
runtime process image. We need to remember the offset into the
|
1915 |
|
|
.rela.bss section we are going to use. */
|
1916 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
1917 |
|
|
{
|
1918 |
|
|
asection *srel;
|
1919 |
|
|
|
1920 |
|
|
srel = htab->srelbss;
|
1921 |
|
|
BFD_ASSERT (srel != NULL);
|
1922 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
1923 |
|
|
h->needs_copy = 1;
|
1924 |
|
|
}
|
1925 |
|
|
|
1926 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
1927 |
|
|
}
|
1928 |
|
|
|
1929 |
|
|
/* Allocate space in .plt, .got and associated reloc sections for
|
1930 |
|
|
dynamic relocs. */
|
1931 |
|
|
|
1932 |
|
|
static bfd_boolean
|
1933 |
|
|
allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
|
1934 |
|
|
{
|
1935 |
|
|
struct bfd_link_info *info;
|
1936 |
|
|
struct elf_lm32_link_hash_table *htab;
|
1937 |
|
|
struct elf_lm32_link_hash_entry *eh;
|
1938 |
|
|
struct elf_lm32_dyn_relocs *p;
|
1939 |
|
|
|
1940 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
1941 |
|
|
return TRUE;
|
1942 |
|
|
|
1943 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
1944 |
|
|
/* When warning symbols are created, they **replace** the "real"
|
1945 |
|
|
entry in the hash table, thus we never get to see the real
|
1946 |
|
|
symbol in a hash traversal. So look at it now. */
|
1947 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
1948 |
|
|
|
1949 |
|
|
info = (struct bfd_link_info *) inf;
|
1950 |
|
|
htab = lm32_elf_hash_table (info);
|
1951 |
|
|
if (htab == NULL)
|
1952 |
|
|
return FALSE;
|
1953 |
|
|
|
1954 |
|
|
eh = (struct elf_lm32_link_hash_entry *) h;
|
1955 |
|
|
|
1956 |
|
|
if (htab->root.dynamic_sections_created
|
1957 |
|
|
&& h->plt.refcount > 0)
|
1958 |
|
|
{
|
1959 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
1960 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
1961 |
|
|
if (h->dynindx == -1
|
1962 |
|
|
&& !h->forced_local)
|
1963 |
|
|
{
|
1964 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
1965 |
|
|
return FALSE;
|
1966 |
|
|
}
|
1967 |
|
|
|
1968 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
|
1969 |
|
|
{
|
1970 |
|
|
asection *s = htab->splt;
|
1971 |
|
|
|
1972 |
|
|
/* If this is the first .plt entry, make room for the special
|
1973 |
|
|
first entry. */
|
1974 |
|
|
if (s->size == 0)
|
1975 |
|
|
s->size += PLT_ENTRY_SIZE;
|
1976 |
|
|
|
1977 |
|
|
h->plt.offset = s->size;
|
1978 |
|
|
|
1979 |
|
|
/* If this symbol is not defined in a regular file, and we are
|
1980 |
|
|
not generating a shared library, then set the symbol to this
|
1981 |
|
|
location in the .plt. This is required to make function
|
1982 |
|
|
pointers compare as equal between the normal executable and
|
1983 |
|
|
the shared library. */
|
1984 |
|
|
if (! info->shared
|
1985 |
|
|
&& !h->def_regular)
|
1986 |
|
|
{
|
1987 |
|
|
h->root.u.def.section = s;
|
1988 |
|
|
h->root.u.def.value = h->plt.offset;
|
1989 |
|
|
}
|
1990 |
|
|
|
1991 |
|
|
/* Make room for this entry. */
|
1992 |
|
|
s->size += PLT_ENTRY_SIZE;
|
1993 |
|
|
|
1994 |
|
|
/* We also need to make an entry in the .got.plt section, which
|
1995 |
|
|
will be placed in the .got section by the linker script. */
|
1996 |
|
|
htab->sgotplt->size += 4;
|
1997 |
|
|
|
1998 |
|
|
/* We also need to make an entry in the .rel.plt section. */
|
1999 |
|
|
htab->srelplt->size += sizeof (Elf32_External_Rela);
|
2000 |
|
|
}
|
2001 |
|
|
else
|
2002 |
|
|
{
|
2003 |
|
|
h->plt.offset = (bfd_vma) -1;
|
2004 |
|
|
h->needs_plt = 0;
|
2005 |
|
|
}
|
2006 |
|
|
}
|
2007 |
|
|
else
|
2008 |
|
|
{
|
2009 |
|
|
h->plt.offset = (bfd_vma) -1;
|
2010 |
|
|
h->needs_plt = 0;
|
2011 |
|
|
}
|
2012 |
|
|
|
2013 |
|
|
if (h->got.refcount > 0)
|
2014 |
|
|
{
|
2015 |
|
|
asection *s;
|
2016 |
|
|
bfd_boolean dyn;
|
2017 |
|
|
|
2018 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
2019 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
2020 |
|
|
if (h->dynindx == -1
|
2021 |
|
|
&& !h->forced_local)
|
2022 |
|
|
{
|
2023 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
2024 |
|
|
return FALSE;
|
2025 |
|
|
}
|
2026 |
|
|
|
2027 |
|
|
s = htab->sgot;
|
2028 |
|
|
|
2029 |
|
|
h->got.offset = s->size;
|
2030 |
|
|
s->size += 4;
|
2031 |
|
|
dyn = htab->root.dynamic_sections_created;
|
2032 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
|
2033 |
|
|
htab->srelgot->size += sizeof (Elf32_External_Rela);
|
2034 |
|
|
}
|
2035 |
|
|
else
|
2036 |
|
|
h->got.offset = (bfd_vma) -1;
|
2037 |
|
|
|
2038 |
|
|
if (eh->dyn_relocs == NULL)
|
2039 |
|
|
return TRUE;
|
2040 |
|
|
|
2041 |
|
|
/* In the shared -Bsymbolic case, discard space allocated for
|
2042 |
|
|
dynamic pc-relative relocs against symbols which turn out to be
|
2043 |
|
|
defined in regular objects. For the normal shared case, discard
|
2044 |
|
|
space for pc-relative relocs that have become local due to symbol
|
2045 |
|
|
visibility changes. */
|
2046 |
|
|
|
2047 |
|
|
if (info->shared)
|
2048 |
|
|
{
|
2049 |
|
|
if (h->def_regular
|
2050 |
|
|
&& (h->forced_local
|
2051 |
|
|
|| info->symbolic))
|
2052 |
|
|
{
|
2053 |
|
|
struct elf_lm32_dyn_relocs **pp;
|
2054 |
|
|
|
2055 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
|
2056 |
|
|
{
|
2057 |
|
|
p->count -= p->pc_count;
|
2058 |
|
|
p->pc_count = 0;
|
2059 |
|
|
if (p->count == 0)
|
2060 |
|
|
*pp = p->next;
|
2061 |
|
|
else
|
2062 |
|
|
pp = &p->next;
|
2063 |
|
|
}
|
2064 |
|
|
}
|
2065 |
|
|
|
2066 |
|
|
/* Also discard relocs on undefined weak syms with non-default
|
2067 |
|
|
visibility. */
|
2068 |
|
|
if (eh->dyn_relocs != NULL
|
2069 |
|
|
&& h->root.type == bfd_link_hash_undefweak)
|
2070 |
|
|
{
|
2071 |
|
|
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
|
2072 |
|
|
eh->dyn_relocs = NULL;
|
2073 |
|
|
|
2074 |
|
|
/* Make sure undefined weak symbols are output as a dynamic
|
2075 |
|
|
symbol in PIEs. */
|
2076 |
|
|
else if (h->dynindx == -1
|
2077 |
|
|
&& !h->forced_local)
|
2078 |
|
|
{
|
2079 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
2080 |
|
|
return FALSE;
|
2081 |
|
|
}
|
2082 |
|
|
}
|
2083 |
|
|
}
|
2084 |
|
|
else
|
2085 |
|
|
{
|
2086 |
|
|
/* For the non-shared case, discard space for relocs against
|
2087 |
|
|
symbols which turn out to need copy relocs or are not
|
2088 |
|
|
dynamic. */
|
2089 |
|
|
|
2090 |
|
|
if (!h->non_got_ref
|
2091 |
|
|
&& ((h->def_dynamic
|
2092 |
|
|
&& !h->def_regular)
|
2093 |
|
|
|| (htab->root.dynamic_sections_created
|
2094 |
|
|
&& (h->root.type == bfd_link_hash_undefweak
|
2095 |
|
|
|| h->root.type == bfd_link_hash_undefined))))
|
2096 |
|
|
{
|
2097 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
2098 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
2099 |
|
|
if (h->dynindx == -1
|
2100 |
|
|
&& !h->forced_local)
|
2101 |
|
|
{
|
2102 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
2103 |
|
|
return FALSE;
|
2104 |
|
|
}
|
2105 |
|
|
|
2106 |
|
|
/* If that succeeded, we know we'll be keeping all the
|
2107 |
|
|
relocs. */
|
2108 |
|
|
if (h->dynindx != -1)
|
2109 |
|
|
goto keep;
|
2110 |
|
|
}
|
2111 |
|
|
|
2112 |
|
|
eh->dyn_relocs = NULL;
|
2113 |
|
|
|
2114 |
|
|
keep: ;
|
2115 |
|
|
}
|
2116 |
|
|
|
2117 |
|
|
/* Finally, allocate space. */
|
2118 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
2119 |
|
|
{
|
2120 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
2121 |
|
|
sreloc->size += p->count * sizeof (Elf32_External_Rela);
|
2122 |
|
|
}
|
2123 |
|
|
|
2124 |
|
|
return TRUE;
|
2125 |
|
|
}
|
2126 |
|
|
|
2127 |
|
|
/* Find any dynamic relocs that apply to read-only sections. */
|
2128 |
|
|
|
2129 |
|
|
static bfd_boolean
|
2130 |
|
|
readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
|
2131 |
|
|
{
|
2132 |
|
|
struct elf_lm32_link_hash_entry *eh;
|
2133 |
|
|
struct elf_lm32_dyn_relocs *p;
|
2134 |
|
|
|
2135 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
2136 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
2137 |
|
|
|
2138 |
|
|
eh = (struct elf_lm32_link_hash_entry *) h;
|
2139 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
2140 |
|
|
{
|
2141 |
|
|
asection *s = p->sec->output_section;
|
2142 |
|
|
|
2143 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
2144 |
|
|
{
|
2145 |
|
|
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
2146 |
|
|
|
2147 |
|
|
info->flags |= DF_TEXTREL;
|
2148 |
|
|
|
2149 |
|
|
/* Not an error, just cut short the traversal. */
|
2150 |
|
|
return FALSE;
|
2151 |
|
|
}
|
2152 |
|
|
}
|
2153 |
|
|
return TRUE;
|
2154 |
|
|
}
|
2155 |
|
|
|
2156 |
|
|
/* Set the sizes of the dynamic sections. */
|
2157 |
|
|
|
2158 |
|
|
static bfd_boolean
|
2159 |
|
|
lm32_elf_size_dynamic_sections (bfd *output_bfd,
|
2160 |
|
|
struct bfd_link_info *info)
|
2161 |
|
|
{
|
2162 |
|
|
struct elf_lm32_link_hash_table *htab;
|
2163 |
|
|
bfd *dynobj;
|
2164 |
|
|
asection *s;
|
2165 |
|
|
bfd_boolean relocs;
|
2166 |
|
|
bfd *ibfd;
|
2167 |
|
|
|
2168 |
|
|
htab = lm32_elf_hash_table (info);
|
2169 |
|
|
if (htab == NULL)
|
2170 |
|
|
return FALSE;
|
2171 |
|
|
|
2172 |
|
|
dynobj = htab->root.dynobj;
|
2173 |
|
|
BFD_ASSERT (dynobj != NULL);
|
2174 |
|
|
|
2175 |
|
|
if (htab->root.dynamic_sections_created)
|
2176 |
|
|
{
|
2177 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
2178 |
|
|
if (info->executable)
|
2179 |
|
|
{
|
2180 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
2181 |
|
|
BFD_ASSERT (s != NULL);
|
2182 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
2183 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
2184 |
|
|
}
|
2185 |
|
|
}
|
2186 |
|
|
|
2187 |
|
|
/* Set up .got offsets for local syms, and space for local dynamic
|
2188 |
|
|
relocs. */
|
2189 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
2190 |
|
|
{
|
2191 |
|
|
bfd_signed_vma *local_got;
|
2192 |
|
|
bfd_signed_vma *end_local_got;
|
2193 |
|
|
bfd_size_type locsymcount;
|
2194 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
2195 |
|
|
asection *srel;
|
2196 |
|
|
|
2197 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
2198 |
|
|
continue;
|
2199 |
|
|
|
2200 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
2201 |
|
|
{
|
2202 |
|
|
struct elf_lm32_dyn_relocs *p;
|
2203 |
|
|
|
2204 |
|
|
for (p = ((struct elf_lm32_dyn_relocs *)
|
2205 |
|
|
elf_section_data (s)->local_dynrel);
|
2206 |
|
|
p != NULL;
|
2207 |
|
|
p = p->next)
|
2208 |
|
|
{
|
2209 |
|
|
if (! bfd_is_abs_section (p->sec)
|
2210 |
|
|
&& bfd_is_abs_section (p->sec->output_section))
|
2211 |
|
|
{
|
2212 |
|
|
/* Input section has been discarded, either because
|
2213 |
|
|
it is a copy of a linkonce section or due to
|
2214 |
|
|
linker script /DISCARD/, so we'll be discarding
|
2215 |
|
|
the relocs too. */
|
2216 |
|
|
}
|
2217 |
|
|
else if (p->count != 0)
|
2218 |
|
|
{
|
2219 |
|
|
srel = elf_section_data (p->sec)->sreloc;
|
2220 |
|
|
srel->size += p->count * sizeof (Elf32_External_Rela);
|
2221 |
|
|
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
2222 |
|
|
info->flags |= DF_TEXTREL;
|
2223 |
|
|
}
|
2224 |
|
|
}
|
2225 |
|
|
}
|
2226 |
|
|
|
2227 |
|
|
local_got = elf_local_got_refcounts (ibfd);
|
2228 |
|
|
if (!local_got)
|
2229 |
|
|
continue;
|
2230 |
|
|
|
2231 |
|
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
2232 |
|
|
locsymcount = symtab_hdr->sh_info;
|
2233 |
|
|
end_local_got = local_got + locsymcount;
|
2234 |
|
|
s = htab->sgot;
|
2235 |
|
|
srel = htab->srelgot;
|
2236 |
|
|
for (; local_got < end_local_got; ++local_got)
|
2237 |
|
|
{
|
2238 |
|
|
if (*local_got > 0)
|
2239 |
|
|
{
|
2240 |
|
|
*local_got = s->size;
|
2241 |
|
|
s->size += 4;
|
2242 |
|
|
if (info->shared)
|
2243 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
2244 |
|
|
}
|
2245 |
|
|
else
|
2246 |
|
|
*local_got = (bfd_vma) -1;
|
2247 |
|
|
}
|
2248 |
|
|
}
|
2249 |
|
|
|
2250 |
|
|
/* Allocate global sym .plt and .got entries, and space for global
|
2251 |
|
|
sym dynamic relocs. */
|
2252 |
|
|
elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
|
2253 |
|
|
|
2254 |
|
|
/* We now have determined the sizes of the various dynamic sections.
|
2255 |
|
|
Allocate memory for them. */
|
2256 |
|
|
relocs = FALSE;
|
2257 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
2258 |
|
|
{
|
2259 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
2260 |
|
|
continue;
|
2261 |
|
|
|
2262 |
|
|
if (s == htab->splt
|
2263 |
|
|
|| s == htab->sgot
|
2264 |
|
|
|| s == htab->sgotplt
|
2265 |
|
|
|| s == htab->sdynbss)
|
2266 |
|
|
{
|
2267 |
|
|
/* Strip this section if we don't need it; see the
|
2268 |
|
|
comment below. */
|
2269 |
|
|
}
|
2270 |
|
|
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
|
2271 |
|
|
{
|
2272 |
|
|
if (s->size != 0 && s != htab->srelplt)
|
2273 |
|
|
relocs = TRUE;
|
2274 |
|
|
|
2275 |
|
|
/* We use the reloc_count field as a counter if we need
|
2276 |
|
|
to copy relocs into the output file. */
|
2277 |
|
|
s->reloc_count = 0;
|
2278 |
|
|
}
|
2279 |
|
|
else
|
2280 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
2281 |
|
|
continue;
|
2282 |
|
|
|
2283 |
|
|
if (s->size == 0)
|
2284 |
|
|
{
|
2285 |
|
|
/* If we don't need this section, strip it from the
|
2286 |
|
|
output file. This is mostly to handle .rela.bss and
|
2287 |
|
|
.rela.plt. We must create both sections in
|
2288 |
|
|
create_dynamic_sections, because they must be created
|
2289 |
|
|
before the linker maps input sections to output
|
2290 |
|
|
sections. The linker does that before
|
2291 |
|
|
adjust_dynamic_symbol is called, and it is that
|
2292 |
|
|
function which decides whether anything needs to go
|
2293 |
|
|
into these sections. */
|
2294 |
|
|
s->flags |= SEC_EXCLUDE;
|
2295 |
|
|
continue;
|
2296 |
|
|
}
|
2297 |
|
|
|
2298 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
2299 |
|
|
continue;
|
2300 |
|
|
|
2301 |
|
|
/* Allocate memory for the section contents. We use bfd_zalloc
|
2302 |
|
|
here in case unused entries are not reclaimed before the
|
2303 |
|
|
section's contents are written out. This should not happen,
|
2304 |
|
|
but this way if it does, we get a R_LM32_NONE reloc instead
|
2305 |
|
|
of garbage. */
|
2306 |
|
|
s->contents = bfd_zalloc (dynobj, s->size);
|
2307 |
|
|
if (s->contents == NULL)
|
2308 |
|
|
return FALSE;
|
2309 |
|
|
}
|
2310 |
|
|
|
2311 |
|
|
if (htab->root.dynamic_sections_created)
|
2312 |
|
|
{
|
2313 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
2314 |
|
|
values later, in lm32_elf_finish_dynamic_sections, but we
|
2315 |
|
|
must add the entries now so that we get the correct size for
|
2316 |
|
|
the .dynamic section. The DT_DEBUG entry is filled in by the
|
2317 |
|
|
dynamic linker and used by the debugger. */
|
2318 |
|
|
#define add_dynamic_entry(TAG, VAL) \
|
2319 |
|
|
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
2320 |
|
|
|
2321 |
|
|
if (info->executable)
|
2322 |
|
|
{
|
2323 |
|
|
if (! add_dynamic_entry (DT_DEBUG, 0))
|
2324 |
|
|
return FALSE;
|
2325 |
|
|
}
|
2326 |
|
|
|
2327 |
|
|
if (htab->splt->size != 0)
|
2328 |
|
|
{
|
2329 |
|
|
if (! add_dynamic_entry (DT_PLTGOT, 0)
|
2330 |
|
|
|| ! add_dynamic_entry (DT_PLTRELSZ, 0)
|
2331 |
|
|
|| ! add_dynamic_entry (DT_PLTREL, DT_RELA)
|
2332 |
|
|
|| ! add_dynamic_entry (DT_JMPREL, 0))
|
2333 |
|
|
return FALSE;
|
2334 |
|
|
}
|
2335 |
|
|
|
2336 |
|
|
if (relocs)
|
2337 |
|
|
{
|
2338 |
|
|
if (! add_dynamic_entry (DT_RELA, 0)
|
2339 |
|
|
|| ! add_dynamic_entry (DT_RELASZ, 0)
|
2340 |
|
|
|| ! add_dynamic_entry (DT_RELAENT,
|
2341 |
|
|
sizeof (Elf32_External_Rela)))
|
2342 |
|
|
return FALSE;
|
2343 |
|
|
|
2344 |
|
|
/* If any dynamic relocs apply to a read-only section,
|
2345 |
|
|
then we need a DT_TEXTREL entry. */
|
2346 |
|
|
if ((info->flags & DF_TEXTREL) == 0)
|
2347 |
|
|
elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
|
2348 |
|
|
info);
|
2349 |
|
|
|
2350 |
|
|
if ((info->flags & DF_TEXTREL) != 0)
|
2351 |
|
|
{
|
2352 |
|
|
if (! add_dynamic_entry (DT_TEXTREL, 0))
|
2353 |
|
|
return FALSE;
|
2354 |
|
|
}
|
2355 |
|
|
}
|
2356 |
|
|
}
|
2357 |
|
|
#undef add_dynamic_entry
|
2358 |
|
|
|
2359 |
|
|
/* Allocate .rofixup section. */
|
2360 |
|
|
if (IS_FDPIC (output_bfd))
|
2361 |
|
|
{
|
2362 |
|
|
struct weak_symbol_list *list_start = NULL, *list_end = NULL;
|
2363 |
|
|
int rgot_weak_count = 0;
|
2364 |
|
|
int r32_count = 0;
|
2365 |
|
|
int rgot_count = 0;
|
2366 |
|
|
/* Look for deleted sections. */
|
2367 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
2368 |
|
|
{
|
2369 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
2370 |
|
|
{
|
2371 |
|
|
if (s->reloc_count)
|
2372 |
|
|
{
|
2373 |
|
|
/* Count relocs that need .rofixup entires. */
|
2374 |
|
|
Elf_Internal_Rela *internal_relocs, *end;
|
2375 |
|
|
internal_relocs = elf_section_data (s)->relocs;
|
2376 |
|
|
if (internal_relocs == NULL)
|
2377 |
|
|
internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE));
|
2378 |
|
|
if (internal_relocs != NULL)
|
2379 |
|
|
{
|
2380 |
|
|
end = internal_relocs + s->reloc_count;
|
2381 |
|
|
while (internal_relocs < end)
|
2382 |
|
|
{
|
2383 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
2384 |
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
|
2385 |
|
|
unsigned long r_symndx;
|
2386 |
|
|
struct elf_link_hash_entry *h;
|
2387 |
|
|
|
2388 |
|
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
2389 |
|
|
sym_hashes = elf_sym_hashes (ibfd);
|
2390 |
|
|
r_symndx = ELF32_R_SYM (internal_relocs->r_info);
|
2391 |
|
|
h = NULL;
|
2392 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
2393 |
|
|
{
|
2394 |
|
|
}
|
2395 |
|
|
else
|
2396 |
|
|
{
|
2397 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
2398 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
2399 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
2400 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
2401 |
|
|
}
|
2402 |
|
|
|
2403 |
|
|
/* Don't generate entries for weak symbols. */
|
2404 |
|
|
if (!h || (h && h->root.type != bfd_link_hash_undefweak))
|
2405 |
|
|
{
|
2406 |
|
|
if (!elf_discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0))
|
2407 |
|
|
{
|
2408 |
|
|
switch (ELF32_R_TYPE (internal_relocs->r_info))
|
2409 |
|
|
{
|
2410 |
|
|
case R_LM32_32:
|
2411 |
|
|
r32_count++;
|
2412 |
|
|
break;
|
2413 |
|
|
case R_LM32_16_GOT:
|
2414 |
|
|
rgot_count++;
|
2415 |
|
|
break;
|
2416 |
|
|
}
|
2417 |
|
|
}
|
2418 |
|
|
}
|
2419 |
|
|
else
|
2420 |
|
|
{
|
2421 |
|
|
struct weak_symbol_list *current, *new_entry;
|
2422 |
|
|
/* Is this symbol already in the list? */
|
2423 |
|
|
for (current = list_start; current; current = current->next)
|
2424 |
|
|
{
|
2425 |
|
|
if (!strcmp (current->name, h->root.root.string))
|
2426 |
|
|
break;
|
2427 |
|
|
}
|
2428 |
|
|
if (!current && !elf_discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC))
|
2429 |
|
|
{
|
2430 |
|
|
/* Will this have an entry in the GOT. */
|
2431 |
|
|
if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT)
|
2432 |
|
|
{
|
2433 |
|
|
/* Create a new entry. */
|
2434 |
|
|
new_entry = malloc (sizeof (struct weak_symbol_list));
|
2435 |
|
|
if (!new_entry)
|
2436 |
|
|
return FALSE;
|
2437 |
|
|
new_entry->name = h->root.root.string;
|
2438 |
|
|
new_entry->next = NULL;
|
2439 |
|
|
/* Add to list */
|
2440 |
|
|
if (list_start == NULL)
|
2441 |
|
|
{
|
2442 |
|
|
list_start = new_entry;
|
2443 |
|
|
list_end = new_entry;
|
2444 |
|
|
}
|
2445 |
|
|
else
|
2446 |
|
|
{
|
2447 |
|
|
list_end->next = new_entry;
|
2448 |
|
|
list_end = new_entry;
|
2449 |
|
|
}
|
2450 |
|
|
/* Increase count of undefined weak symbols in the got. */
|
2451 |
|
|
rgot_weak_count++;
|
2452 |
|
|
}
|
2453 |
|
|
}
|
2454 |
|
|
}
|
2455 |
|
|
internal_relocs++;
|
2456 |
|
|
}
|
2457 |
|
|
}
|
2458 |
|
|
else
|
2459 |
|
|
return FALSE;
|
2460 |
|
|
}
|
2461 |
|
|
}
|
2462 |
|
|
}
|
2463 |
|
|
/* Free list. */
|
2464 |
|
|
while (list_start)
|
2465 |
|
|
{
|
2466 |
|
|
list_end = list_start->next;
|
2467 |
|
|
free (list_start);
|
2468 |
|
|
list_start = list_end;
|
2469 |
|
|
}
|
2470 |
|
|
|
2471 |
|
|
/* Size sections. */
|
2472 |
|
|
lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4;
|
2473 |
|
|
if (lm32fdpic_fixup32_section (info)->size == 0)
|
2474 |
|
|
lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE;
|
2475 |
|
|
else
|
2476 |
|
|
{
|
2477 |
|
|
lm32fdpic_fixup32_section (info)->contents =
|
2478 |
|
|
bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size);
|
2479 |
|
|
if (lm32fdpic_fixup32_section (info)->contents == NULL)
|
2480 |
|
|
return FALSE;
|
2481 |
|
|
}
|
2482 |
|
|
}
|
2483 |
|
|
|
2484 |
|
|
return TRUE;
|
2485 |
|
|
}
|
2486 |
|
|
|
2487 |
|
|
/* Create dynamic sections when linking against a dynamic object. */
|
2488 |
|
|
|
2489 |
|
|
static bfd_boolean
|
2490 |
|
|
lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
|
2491 |
|
|
{
|
2492 |
|
|
struct elf_lm32_link_hash_table *htab;
|
2493 |
|
|
flagword flags, pltflags;
|
2494 |
|
|
asection *s;
|
2495 |
|
|
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
|
2496 |
|
|
int ptralign = 2; /* 32bit */
|
2497 |
|
|
|
2498 |
|
|
htab = lm32_elf_hash_table (info);
|
2499 |
|
|
if (htab == NULL)
|
2500 |
|
|
return FALSE;
|
2501 |
|
|
|
2502 |
|
|
/* Make sure we have a GOT - For the case where we have a dynamic object
|
2503 |
|
|
but none of the relocs in check_relocs */
|
2504 |
|
|
if (! create_got_section (abfd, info))
|
2505 |
|
|
return FALSE;
|
2506 |
|
|
if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL))
|
2507 |
|
|
{
|
2508 |
|
|
if (! create_rofixup_section (abfd, info))
|
2509 |
|
|
return FALSE;
|
2510 |
|
|
}
|
2511 |
|
|
|
2512 |
|
|
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
|
2513 |
|
|
.rel[a].bss sections. */
|
2514 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
2515 |
|
|
| SEC_LINKER_CREATED);
|
2516 |
|
|
|
2517 |
|
|
pltflags = flags;
|
2518 |
|
|
pltflags |= SEC_CODE;
|
2519 |
|
|
if (bed->plt_not_loaded)
|
2520 |
|
|
pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
|
2521 |
|
|
if (bed->plt_readonly)
|
2522 |
|
|
pltflags |= SEC_READONLY;
|
2523 |
|
|
|
2524 |
|
|
s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
|
2525 |
|
|
htab->splt = s;
|
2526 |
|
|
if (s == NULL
|
2527 |
|
|
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
|
2528 |
|
|
return FALSE;
|
2529 |
|
|
|
2530 |
|
|
if (bed->want_plt_sym)
|
2531 |
|
|
{
|
2532 |
|
|
/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
|
2533 |
|
|
.plt section. */
|
2534 |
|
|
struct bfd_link_hash_entry *bh = NULL;
|
2535 |
|
|
struct elf_link_hash_entry *h;
|
2536 |
|
|
|
2537 |
|
|
if (! (_bfd_generic_link_add_one_symbol
|
2538 |
|
|
(info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
|
2539 |
|
|
(bfd_vma) 0, NULL, FALSE,
|
2540 |
|
|
get_elf_backend_data (abfd)->collect, &bh)))
|
2541 |
|
|
return FALSE;
|
2542 |
|
|
h = (struct elf_link_hash_entry *) bh;
|
2543 |
|
|
h->def_regular = 1;
|
2544 |
|
|
h->type = STT_OBJECT;
|
2545 |
|
|
htab->root.hplt = h;
|
2546 |
|
|
|
2547 |
|
|
if (info->shared
|
2548 |
|
|
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
|
2549 |
|
|
return FALSE;
|
2550 |
|
|
}
|
2551 |
|
|
|
2552 |
|
|
s = bfd_make_section_with_flags (abfd,
|
2553 |
|
|
bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
|
2554 |
|
|
flags | SEC_READONLY);
|
2555 |
|
|
htab->srelplt = s;
|
2556 |
|
|
if (s == NULL
|
2557 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
2558 |
|
|
return FALSE;
|
2559 |
|
|
|
2560 |
|
|
if (htab->sgot == NULL
|
2561 |
|
|
&& ! create_got_section (abfd, info))
|
2562 |
|
|
return FALSE;
|
2563 |
|
|
|
2564 |
|
|
{
|
2565 |
|
|
const char *secname;
|
2566 |
|
|
char *relname;
|
2567 |
|
|
flagword secflags;
|
2568 |
|
|
asection *sec;
|
2569 |
|
|
|
2570 |
|
|
for (sec = abfd->sections; sec; sec = sec->next)
|
2571 |
|
|
{
|
2572 |
|
|
secflags = bfd_get_section_flags (abfd, sec);
|
2573 |
|
|
if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
|
2574 |
|
|
|| ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
|
2575 |
|
|
continue;
|
2576 |
|
|
secname = bfd_get_section_name (abfd, sec);
|
2577 |
|
|
relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
|
2578 |
|
|
strcpy (relname, ".rela");
|
2579 |
|
|
strcat (relname, secname);
|
2580 |
|
|
if (bfd_get_section_by_name (abfd, secname))
|
2581 |
|
|
continue;
|
2582 |
|
|
s = bfd_make_section_with_flags (abfd, relname,
|
2583 |
|
|
flags | SEC_READONLY);
|
2584 |
|
|
if (s == NULL
|
2585 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
2586 |
|
|
return FALSE;
|
2587 |
|
|
}
|
2588 |
|
|
}
|
2589 |
|
|
|
2590 |
|
|
if (bed->want_dynbss)
|
2591 |
|
|
{
|
2592 |
|
|
/* The .dynbss section is a place to put symbols which are defined
|
2593 |
|
|
by dynamic objects, are referenced by regular objects, and are
|
2594 |
|
|
not functions. We must allocate space for them in the process
|
2595 |
|
|
image and use a R_*_COPY reloc to tell the dynamic linker to
|
2596 |
|
|
initialize them at run time. The linker script puts the .dynbss
|
2597 |
|
|
section into the .bss section of the final image. */
|
2598 |
|
|
s = bfd_make_section_with_flags (abfd, ".dynbss",
|
2599 |
|
|
SEC_ALLOC | SEC_LINKER_CREATED);
|
2600 |
|
|
htab->sdynbss = s;
|
2601 |
|
|
if (s == NULL)
|
2602 |
|
|
return FALSE;
|
2603 |
|
|
/* The .rel[a].bss section holds copy relocs. This section is not
|
2604 |
|
|
normally needed. We need to create it here, though, so that the
|
2605 |
|
|
linker will map it to an output section. We can't just create it
|
2606 |
|
|
only if we need it, because we will not know whether we need it
|
2607 |
|
|
until we have seen all the input files, and the first time the
|
2608 |
|
|
main linker code calls BFD after examining all the input files
|
2609 |
|
|
(size_dynamic_sections) the input sections have already been
|
2610 |
|
|
mapped to the output sections. If the section turns out not to
|
2611 |
|
|
be needed, we can discard it later. We will never need this
|
2612 |
|
|
section when generating a shared object, since they do not use
|
2613 |
|
|
copy relocs. */
|
2614 |
|
|
if (! info->shared)
|
2615 |
|
|
{
|
2616 |
|
|
s = bfd_make_section_with_flags (abfd,
|
2617 |
|
|
(bed->default_use_rela_p
|
2618 |
|
|
? ".rela.bss" : ".rel.bss"),
|
2619 |
|
|
flags | SEC_READONLY);
|
2620 |
|
|
htab->srelbss = s;
|
2621 |
|
|
if (s == NULL
|
2622 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
2623 |
|
|
return FALSE;
|
2624 |
|
|
}
|
2625 |
|
|
}
|
2626 |
|
|
|
2627 |
|
|
return TRUE;
|
2628 |
|
|
}
|
2629 |
|
|
|
2630 |
|
|
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
2631 |
|
|
|
2632 |
|
|
static void
|
2633 |
|
|
lm32_elf_copy_indirect_symbol (struct bfd_link_info *info,
|
2634 |
|
|
struct elf_link_hash_entry *dir,
|
2635 |
|
|
struct elf_link_hash_entry *ind)
|
2636 |
|
|
{
|
2637 |
|
|
struct elf_lm32_link_hash_entry * edir;
|
2638 |
|
|
struct elf_lm32_link_hash_entry * eind;
|
2639 |
|
|
|
2640 |
|
|
edir = (struct elf_lm32_link_hash_entry *) dir;
|
2641 |
|
|
eind = (struct elf_lm32_link_hash_entry *) ind;
|
2642 |
|
|
|
2643 |
|
|
if (eind->dyn_relocs != NULL)
|
2644 |
|
|
{
|
2645 |
|
|
if (edir->dyn_relocs != NULL)
|
2646 |
|
|
{
|
2647 |
|
|
struct elf_lm32_dyn_relocs **pp;
|
2648 |
|
|
struct elf_lm32_dyn_relocs *p;
|
2649 |
|
|
|
2650 |
|
|
/* Add reloc counts against the indirect sym to the direct sym
|
2651 |
|
|
list. Merge any entries against the same section. */
|
2652 |
|
|
for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
|
2653 |
|
|
{
|
2654 |
|
|
struct elf_lm32_dyn_relocs *q;
|
2655 |
|
|
|
2656 |
|
|
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
2657 |
|
|
if (q->sec == p->sec)
|
2658 |
|
|
{
|
2659 |
|
|
q->pc_count += p->pc_count;
|
2660 |
|
|
q->count += p->count;
|
2661 |
|
|
*pp = p->next;
|
2662 |
|
|
break;
|
2663 |
|
|
}
|
2664 |
|
|
if (q == NULL)
|
2665 |
|
|
pp = &p->next;
|
2666 |
|
|
}
|
2667 |
|
|
*pp = edir->dyn_relocs;
|
2668 |
|
|
}
|
2669 |
|
|
|
2670 |
|
|
edir->dyn_relocs = eind->dyn_relocs;
|
2671 |
|
|
eind->dyn_relocs = NULL;
|
2672 |
|
|
}
|
2673 |
|
|
|
2674 |
|
|
_bfd_elf_link_hash_copy_indirect (info, dir, ind);
|
2675 |
|
|
}
|
2676 |
|
|
|
2677 |
|
|
static bfd_boolean
|
2678 |
|
|
lm32_elf_always_size_sections (bfd *output_bfd,
|
2679 |
|
|
struct bfd_link_info *info)
|
2680 |
|
|
{
|
2681 |
|
|
if (!info->relocatable)
|
2682 |
|
|
{
|
2683 |
|
|
struct elf_link_hash_entry *h;
|
2684 |
|
|
|
2685 |
|
|
/* Force a PT_GNU_STACK segment to be created. */
|
2686 |
|
|
if (! elf_tdata (output_bfd)->stack_flags)
|
2687 |
|
|
elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
|
2688 |
|
|
|
2689 |
|
|
/* Define __stacksize if it's not defined yet. */
|
2690 |
|
|
h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
|
2691 |
|
|
FALSE, FALSE, FALSE);
|
2692 |
|
|
if (! h || h->root.type != bfd_link_hash_defined
|
2693 |
|
|
|| h->type != STT_OBJECT
|
2694 |
|
|
|| !h->def_regular)
|
2695 |
|
|
{
|
2696 |
|
|
struct bfd_link_hash_entry *bh = NULL;
|
2697 |
|
|
|
2698 |
|
|
if (!(_bfd_generic_link_add_one_symbol
|
2699 |
|
|
(info, output_bfd, "__stacksize",
|
2700 |
|
|
BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
|
2701 |
|
|
(const char *) NULL, FALSE,
|
2702 |
|
|
get_elf_backend_data (output_bfd)->collect, &bh)))
|
2703 |
|
|
return FALSE;
|
2704 |
|
|
|
2705 |
|
|
h = (struct elf_link_hash_entry *) bh;
|
2706 |
|
|
h->def_regular = 1;
|
2707 |
|
|
h->type = STT_OBJECT;
|
2708 |
|
|
/* This one must NOT be hidden. */
|
2709 |
|
|
}
|
2710 |
|
|
}
|
2711 |
|
|
|
2712 |
|
|
return TRUE;
|
2713 |
|
|
}
|
2714 |
|
|
|
2715 |
|
|
static bfd_boolean
|
2716 |
|
|
lm32_elf_modify_segment_map (bfd *output_bfd,
|
2717 |
|
|
struct bfd_link_info *info)
|
2718 |
|
|
{
|
2719 |
|
|
struct elf_segment_map *m;
|
2720 |
|
|
|
2721 |
|
|
/* objcopy and strip preserve what's already there using elf32_lm32fdpic_copy_
|
2722 |
|
|
private_bfd_data (). */
|
2723 |
|
|
if (! info)
|
2724 |
|
|
return TRUE;
|
2725 |
|
|
|
2726 |
|
|
for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next)
|
2727 |
|
|
if (m->p_type == PT_GNU_STACK)
|
2728 |
|
|
break;
|
2729 |
|
|
|
2730 |
|
|
if (m)
|
2731 |
|
|
{
|
2732 |
|
|
asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
|
2733 |
|
|
struct elf_link_hash_entry *h;
|
2734 |
|
|
|
2735 |
|
|
if (sec)
|
2736 |
|
|
{
|
2737 |
|
|
/* Obtain the pointer to the __stacksize symbol. */
|
2738 |
|
|
h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
|
2739 |
|
|
FALSE, FALSE, FALSE);
|
2740 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
2741 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
2742 |
|
|
h = (struct elf_link_hash_entry *)h->root.u.i.link;
|
2743 |
|
|
BFD_ASSERT (h->root.type == bfd_link_hash_defined);
|
2744 |
|
|
|
2745 |
|
|
/* Set the section size from the symbol value. We
|
2746 |
|
|
intentionally ignore the symbol section. */
|
2747 |
|
|
if (h->root.type == bfd_link_hash_defined)
|
2748 |
|
|
sec->size = h->root.u.def.value;
|
2749 |
|
|
else
|
2750 |
|
|
sec->size = DEFAULT_STACK_SIZE;
|
2751 |
|
|
|
2752 |
|
|
/* Add the stack section to the PT_GNU_STACK segment,
|
2753 |
|
|
such that its size and alignment requirements make it
|
2754 |
|
|
to the segment. */
|
2755 |
|
|
m->sections[m->count] = sec;
|
2756 |
|
|
m->count++;
|
2757 |
|
|
}
|
2758 |
|
|
}
|
2759 |
|
|
|
2760 |
|
|
return TRUE;
|
2761 |
|
|
}
|
2762 |
|
|
|
2763 |
|
|
static bfd_boolean
|
2764 |
|
|
lm32_elf_modify_program_headers (bfd *output_bfd,
|
2765 |
|
|
struct bfd_link_info *info)
|
2766 |
|
|
{
|
2767 |
|
|
struct elf_obj_tdata *tdata = elf_tdata (output_bfd);
|
2768 |
|
|
struct elf_segment_map *m;
|
2769 |
|
|
Elf_Internal_Phdr *p;
|
2770 |
|
|
|
2771 |
|
|
if (! info)
|
2772 |
|
|
return TRUE;
|
2773 |
|
|
|
2774 |
|
|
for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++)
|
2775 |
|
|
if (m->p_type == PT_GNU_STACK)
|
2776 |
|
|
break;
|
2777 |
|
|
|
2778 |
|
|
if (m)
|
2779 |
|
|
{
|
2780 |
|
|
struct elf_link_hash_entry *h;
|
2781 |
|
|
|
2782 |
|
|
/* Obtain the pointer to the __stacksize symbol. */
|
2783 |
|
|
h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
|
2784 |
|
|
FALSE, FALSE, FALSE);
|
2785 |
|
|
if (h)
|
2786 |
|
|
{
|
2787 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
2788 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
2789 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
2790 |
|
|
BFD_ASSERT (h->root.type == bfd_link_hash_defined);
|
2791 |
|
|
}
|
2792 |
|
|
|
2793 |
|
|
/* Set the header p_memsz from the symbol value. We
|
2794 |
|
|
intentionally ignore the symbol section. */
|
2795 |
|
|
if (h && h->root.type == bfd_link_hash_defined)
|
2796 |
|
|
p->p_memsz = h->root.u.def.value;
|
2797 |
|
|
else
|
2798 |
|
|
p->p_memsz = DEFAULT_STACK_SIZE;
|
2799 |
|
|
|
2800 |
|
|
p->p_align = 8;
|
2801 |
|
|
}
|
2802 |
|
|
|
2803 |
|
|
return TRUE;
|
2804 |
|
|
}
|
2805 |
|
|
|
2806 |
|
|
|
2807 |
|
|
static bfd_boolean
|
2808 |
|
|
lm32_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
|
2809 |
|
|
{
|
2810 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
2811 |
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
2812 |
|
|
return TRUE;
|
2813 |
|
|
|
2814 |
|
|
BFD_ASSERT (!elf_flags_init (obfd)
|
2815 |
|
|
|| elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
|
2816 |
|
|
|
2817 |
|
|
elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
|
2818 |
|
|
elf_flags_init (obfd) = TRUE;
|
2819 |
|
|
|
2820 |
|
|
/* Copy object attributes. */
|
2821 |
|
|
_bfd_elf_copy_obj_attributes (ibfd, obfd);
|
2822 |
|
|
|
2823 |
|
|
return TRUE;
|
2824 |
|
|
}
|
2825 |
|
|
|
2826 |
|
|
|
2827 |
|
|
static bfd_boolean
|
2828 |
|
|
lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
|
2829 |
|
|
{
|
2830 |
|
|
unsigned i;
|
2831 |
|
|
|
2832 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
2833 |
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
2834 |
|
|
return TRUE;
|
2835 |
|
|
|
2836 |
|
|
if (! lm32_elf_copy_private_bfd_data (ibfd, obfd))
|
2837 |
|
|
return FALSE;
|
2838 |
|
|
|
2839 |
|
|
if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
|
2840 |
|
|
|| ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
|
2841 |
|
|
return TRUE;
|
2842 |
|
|
|
2843 |
|
|
/* Copy the stack size. */
|
2844 |
|
|
for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
|
2845 |
|
|
if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
|
2846 |
|
|
{
|
2847 |
|
|
Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
|
2848 |
|
|
|
2849 |
|
|
for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
|
2850 |
|
|
if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
|
2851 |
|
|
{
|
2852 |
|
|
memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
|
2853 |
|
|
|
2854 |
|
|
/* Rewrite the phdrs, since we're only called after they were first written. */
|
2855 |
|
|
if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
|
2856 |
|
|
->s->sizeof_ehdr, SEEK_SET) != 0
|
2857 |
|
|
|| get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
|
2858 |
|
|
elf_elfheader (obfd)->e_phnum) != 0)
|
2859 |
|
|
return FALSE;
|
2860 |
|
|
break;
|
2861 |
|
|
}
|
2862 |
|
|
|
2863 |
|
|
break;
|
2864 |
|
|
}
|
2865 |
|
|
|
2866 |
|
|
return TRUE;
|
2867 |
|
|
}
|
2868 |
|
|
|
2869 |
|
|
|
2870 |
|
|
#define ELF_ARCH bfd_arch_lm32
|
2871 |
|
|
#define ELF_MACHINE_CODE EM_LATTICEMICO32
|
2872 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
2873 |
|
|
|
2874 |
|
|
#define TARGET_BIG_SYM bfd_elf32_lm32_vec
|
2875 |
|
|
#define TARGET_BIG_NAME "elf32-lm32"
|
2876 |
|
|
|
2877 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
|
2878 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
|
2879 |
|
|
#define elf_info_to_howto lm32_info_to_howto_rela
|
2880 |
|
|
#define elf_info_to_howto_rel 0
|
2881 |
|
|
#define elf_backend_rela_normal 1
|
2882 |
|
|
#define elf_backend_object_p lm32_elf_object_p
|
2883 |
|
|
#define elf_backend_final_write_processing lm32_elf_final_write_processing
|
2884 |
|
|
#define elf_backend_can_gc_sections 1
|
2885 |
|
|
#define elf_backend_can_refcount 1
|
2886 |
|
|
#define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
|
2887 |
|
|
#define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
|
2888 |
|
|
#define elf_backend_plt_readonly 1
|
2889 |
|
|
#define elf_backend_want_got_plt 1
|
2890 |
|
|
#define elf_backend_want_plt_sym 0
|
2891 |
|
|
#define elf_backend_got_header_size 12
|
2892 |
|
|
#define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
|
2893 |
|
|
#define elf_backend_check_relocs lm32_elf_check_relocs
|
2894 |
|
|
#define elf_backend_reloc_type_class lm32_elf_reloc_type_class
|
2895 |
|
|
#define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
|
2896 |
|
|
#define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
|
2897 |
|
|
#define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
|
2898 |
|
|
#define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
|
2899 |
|
|
#define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
|
2900 |
|
|
#define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
|
2901 |
|
|
#define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
|
2902 |
|
|
#define elf_backend_relocate_section lm32_elf_relocate_section
|
2903 |
|
|
|
2904 |
|
|
#include "elf32-target.h"
|
2905 |
|
|
|
2906 |
|
|
#undef ELF_MAXPAGESIZE
|
2907 |
|
|
#define ELF_MAXPAGESIZE 0x4000
|
2908 |
|
|
|
2909 |
|
|
|
2910 |
|
|
#undef TARGET_BIG_SYM
|
2911 |
|
|
#define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec
|
2912 |
|
|
#undef TARGET_BIG_NAME
|
2913 |
|
|
#define TARGET_BIG_NAME "elf32-lm32fdpic"
|
2914 |
|
|
#undef elf32_bed
|
2915 |
|
|
#define elf32_bed elf32_lm32fdpic_bed
|
2916 |
|
|
|
2917 |
|
|
#undef elf_backend_always_size_sections
|
2918 |
|
|
#define elf_backend_always_size_sections lm32_elf_always_size_sections
|
2919 |
|
|
#undef elf_backend_modify_segment_map
|
2920 |
|
|
#define elf_backend_modify_segment_map lm32_elf_modify_segment_map
|
2921 |
|
|
#undef elf_backend_modify_program_headers
|
2922 |
|
|
#define elf_backend_modify_program_headers lm32_elf_modify_program_headers
|
2923 |
|
|
#undef bfd_elf32_bfd_copy_private_bfd_data
|
2924 |
|
|
#define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
|
2925 |
|
|
|
2926 |
|
|
#include "elf32-target.h"
|