Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Matsushita 10300 specific support for 32-bit ELF |
b90efa5b | 2 | Copyright (C) 1996-2015 Free Software Foundation, Inc. |
252b5132 | 3 | |
0112cd26 | 4 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 5 | |
0112cd26 NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
0112cd26 | 9 | (at your option) any later version. |
252b5132 | 10 | |
0112cd26 NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
0112cd26 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
252b5132 | 20 | |
252b5132 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
252b5132 RH |
23 | #include "libbfd.h" |
24 | #include "elf-bfd.h" | |
25 | #include "elf/mn10300.h" | |
603b7257 | 26 | #include "libiberty.h" |
917583ad | 27 | |
03a12831 AO |
28 | /* The mn10300 linker needs to keep track of the number of relocs that |
29 | it decides to copy in check_relocs for each symbol. This is so | |
30 | that it can discard PC relative relocs if it doesn't need them when | |
31 | linking with -Bsymbolic. We store the information in a field | |
32 | extending the regular ELF linker hash table. */ | |
33 | ||
603b7257 NC |
34 | struct elf32_mn10300_link_hash_entry |
35 | { | |
252b5132 RH |
36 | /* The basic elf link hash table entry. */ |
37 | struct elf_link_hash_entry root; | |
38 | ||
39 | /* For function symbols, the number of times this function is | |
40 | called directly (ie by name). */ | |
41 | unsigned int direct_calls; | |
42 | ||
43 | /* For function symbols, the size of this function's stack | |
44 | (if <= 255 bytes). We stuff this into "call" instructions | |
45 | to this target when it's valid and profitable to do so. | |
46 | ||
47 | This does not include stack allocated by movm! */ | |
48 | unsigned char stack_size; | |
49 | ||
50 | /* For function symbols, arguments (if any) for movm instruction | |
51 | in the prologue. We stuff this value into "call" instructions | |
52 | to the target when it's valid and profitable to do so. */ | |
53 | unsigned char movm_args; | |
54 | ||
4cc11e76 | 55 | /* For function symbols, the amount of stack space that would be allocated |
252b5132 RH |
56 | by the movm instruction. This is redundant with movm_args, but we |
57 | add it to the hash table to avoid computing it over and over. */ | |
58 | unsigned char movm_stack_size; | |
59 | ||
60 | /* When set, convert all "call" instructions to this target into "calls" | |
61 | instructions. */ | |
62 | #define MN10300_CONVERT_CALL_TO_CALLS 0x1 | |
63 | ||
64 | /* Used to mark functions which have had redundant parts of their | |
65 | prologue deleted. */ | |
66 | #define MN10300_DELETED_PROLOGUE_BYTES 0x2 | |
67 | unsigned char flags; | |
eb13e63f DD |
68 | |
69 | /* Calculated value. */ | |
70 | bfd_vma value; | |
0a22ae8e NC |
71 | |
72 | #define GOT_UNKNOWN 0 | |
73 | #define GOT_NORMAL 1 | |
74 | #define GOT_TLS_GD 2 | |
75 | #define GOT_TLS_LD 3 | |
76 | #define GOT_TLS_IE 4 | |
77 | /* Used to distinguish GOT entries for TLS types from normal GOT entries. */ | |
78 | unsigned char tls_type; | |
252b5132 RH |
79 | }; |
80 | ||
81 | /* We derive a hash table from the main elf linker hash table so | |
82 | we can store state variables and a secondary hash table without | |
83 | resorting to global variables. */ | |
603b7257 NC |
84 | struct elf32_mn10300_link_hash_table |
85 | { | |
252b5132 RH |
86 | /* The main hash table. */ |
87 | struct elf_link_hash_table root; | |
88 | ||
89 | /* A hash table for static functions. We could derive a new hash table | |
90 | instead of using the full elf32_mn10300_link_hash_table if we wanted | |
91 | to save some memory. */ | |
92 | struct elf32_mn10300_link_hash_table *static_hash_table; | |
93 | ||
94 | /* Random linker state flags. */ | |
95 | #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 | |
96 | char flags; | |
0a22ae8e NC |
97 | struct |
98 | { | |
99 | bfd_signed_vma refcount; | |
100 | bfd_vma offset; | |
101 | char got_allocated; | |
102 | char rel_emitted; | |
103 | } tls_ldm_got; | |
252b5132 RH |
104 | }; |
105 | ||
0a22ae8e NC |
106 | #define elf_mn10300_hash_entry(ent) ((struct elf32_mn10300_link_hash_entry *)(ent)) |
107 | ||
108 | struct elf_mn10300_obj_tdata | |
109 | { | |
110 | struct elf_obj_tdata root; | |
111 | ||
112 | /* tls_type for each local got entry. */ | |
113 | char * local_got_tls_type; | |
114 | }; | |
115 | ||
116 | #define elf_mn10300_tdata(abfd) \ | |
117 | ((struct elf_mn10300_obj_tdata *) (abfd)->tdata.any) | |
118 | ||
119 | #define elf_mn10300_local_got_tls_type(abfd) \ | |
120 | (elf_mn10300_tdata (abfd)->local_got_tls_type) | |
121 | ||
603b7257 NC |
122 | #ifndef streq |
123 | #define streq(a, b) (strcmp ((a),(b)) == 0) | |
124 | #endif | |
125 | ||
252b5132 RH |
126 | /* For MN10300 linker hash table. */ |
127 | ||
128 | /* Get the MN10300 ELF linker hash table from a link_info structure. */ | |
129 | ||
130 | #define elf32_mn10300_hash_table(p) \ | |
4dfe6ac6 NC |
131 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
132 | == MN10300_ELF_DATA ? ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 RH |
133 | |
134 | #define elf32_mn10300_link_hash_traverse(table, func, info) \ | |
135 | (elf_link_hash_traverse \ | |
136 | (&(table)->root, \ | |
603b7257 | 137 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
138 | (info))) |
139 | ||
603b7257 NC |
140 | static reloc_howto_type elf_mn10300_howto_table[] = |
141 | { | |
252b5132 RH |
142 | /* Dummy relocation. Does nothing. */ |
143 | HOWTO (R_MN10300_NONE, | |
144 | 0, | |
145 | 2, | |
146 | 16, | |
b34976b6 | 147 | FALSE, |
252b5132 RH |
148 | 0, |
149 | complain_overflow_bitfield, | |
150 | bfd_elf_generic_reloc, | |
151 | "R_MN10300_NONE", | |
b34976b6 | 152 | FALSE, |
252b5132 RH |
153 | 0, |
154 | 0, | |
b34976b6 | 155 | FALSE), |
252b5132 RH |
156 | /* Standard 32 bit reloc. */ |
157 | HOWTO (R_MN10300_32, | |
158 | 0, | |
159 | 2, | |
160 | 32, | |
b34976b6 | 161 | FALSE, |
252b5132 RH |
162 | 0, |
163 | complain_overflow_bitfield, | |
164 | bfd_elf_generic_reloc, | |
165 | "R_MN10300_32", | |
b34976b6 | 166 | FALSE, |
252b5132 RH |
167 | 0xffffffff, |
168 | 0xffffffff, | |
b34976b6 | 169 | FALSE), |
252b5132 RH |
170 | /* Standard 16 bit reloc. */ |
171 | HOWTO (R_MN10300_16, | |
172 | 0, | |
173 | 1, | |
174 | 16, | |
b34976b6 | 175 | FALSE, |
252b5132 RH |
176 | 0, |
177 | complain_overflow_bitfield, | |
178 | bfd_elf_generic_reloc, | |
179 | "R_MN10300_16", | |
b34976b6 | 180 | FALSE, |
252b5132 RH |
181 | 0xffff, |
182 | 0xffff, | |
b34976b6 | 183 | FALSE), |
252b5132 RH |
184 | /* Standard 8 bit reloc. */ |
185 | HOWTO (R_MN10300_8, | |
186 | 0, | |
187 | 0, | |
188 | 8, | |
b34976b6 | 189 | FALSE, |
252b5132 RH |
190 | 0, |
191 | complain_overflow_bitfield, | |
192 | bfd_elf_generic_reloc, | |
193 | "R_MN10300_8", | |
b34976b6 | 194 | FALSE, |
252b5132 RH |
195 | 0xff, |
196 | 0xff, | |
b34976b6 | 197 | FALSE), |
252b5132 RH |
198 | /* Standard 32bit pc-relative reloc. */ |
199 | HOWTO (R_MN10300_PCREL32, | |
200 | 0, | |
201 | 2, | |
202 | 32, | |
b34976b6 | 203 | TRUE, |
252b5132 RH |
204 | 0, |
205 | complain_overflow_bitfield, | |
206 | bfd_elf_generic_reloc, | |
207 | "R_MN10300_PCREL32", | |
b34976b6 | 208 | FALSE, |
252b5132 RH |
209 | 0xffffffff, |
210 | 0xffffffff, | |
b34976b6 | 211 | TRUE), |
252b5132 RH |
212 | /* Standard 16bit pc-relative reloc. */ |
213 | HOWTO (R_MN10300_PCREL16, | |
214 | 0, | |
215 | 1, | |
216 | 16, | |
b34976b6 | 217 | TRUE, |
252b5132 RH |
218 | 0, |
219 | complain_overflow_bitfield, | |
220 | bfd_elf_generic_reloc, | |
221 | "R_MN10300_PCREL16", | |
b34976b6 | 222 | FALSE, |
252b5132 RH |
223 | 0xffff, |
224 | 0xffff, | |
b34976b6 | 225 | TRUE), |
252b5132 RH |
226 | /* Standard 8 pc-relative reloc. */ |
227 | HOWTO (R_MN10300_PCREL8, | |
228 | 0, | |
229 | 0, | |
230 | 8, | |
b34976b6 | 231 | TRUE, |
252b5132 RH |
232 | 0, |
233 | complain_overflow_bitfield, | |
234 | bfd_elf_generic_reloc, | |
235 | "R_MN10300_PCREL8", | |
b34976b6 | 236 | FALSE, |
252b5132 RH |
237 | 0xff, |
238 | 0xff, | |
b34976b6 | 239 | TRUE), |
252b5132 | 240 | |
603b7257 | 241 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
242 | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ |
243 | 0, /* rightshift */ | |
244 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
245 | 0, /* bitsize */ | |
b34976b6 | 246 | FALSE, /* pc_relative */ |
252b5132 RH |
247 | 0, /* bitpos */ |
248 | complain_overflow_dont, /* complain_on_overflow */ | |
249 | NULL, /* special_function */ | |
250 | "R_MN10300_GNU_VTINHERIT", /* name */ | |
b34976b6 | 251 | FALSE, /* partial_inplace */ |
252b5132 RH |
252 | 0, /* src_mask */ |
253 | 0, /* dst_mask */ | |
b34976b6 | 254 | FALSE), /* pcrel_offset */ |
252b5132 RH |
255 | |
256 | /* GNU extension to record C++ vtable member usage */ | |
257 | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ | |
258 | 0, /* rightshift */ | |
259 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
260 | 0, /* bitsize */ | |
b34976b6 | 261 | FALSE, /* pc_relative */ |
252b5132 RH |
262 | 0, /* bitpos */ |
263 | complain_overflow_dont, /* complain_on_overflow */ | |
264 | NULL, /* special_function */ | |
265 | "R_MN10300_GNU_VTENTRY", /* name */ | |
b34976b6 | 266 | FALSE, /* partial_inplace */ |
252b5132 RH |
267 | 0, /* src_mask */ |
268 | 0, /* dst_mask */ | |
b34976b6 | 269 | FALSE), /* pcrel_offset */ |
252b5132 RH |
270 | |
271 | /* Standard 24 bit reloc. */ | |
272 | HOWTO (R_MN10300_24, | |
273 | 0, | |
274 | 2, | |
275 | 24, | |
b34976b6 | 276 | FALSE, |
252b5132 RH |
277 | 0, |
278 | complain_overflow_bitfield, | |
279 | bfd_elf_generic_reloc, | |
280 | "R_MN10300_24", | |
b34976b6 | 281 | FALSE, |
252b5132 RH |
282 | 0xffffff, |
283 | 0xffffff, | |
b34976b6 | 284 | FALSE), |
03a12831 AO |
285 | HOWTO (R_MN10300_GOTPC32, /* type */ |
286 | 0, /* rightshift */ | |
287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 32, /* bitsize */ | |
289 | TRUE, /* pc_relative */ | |
290 | 0, /* bitpos */ | |
291 | complain_overflow_bitfield, /* complain_on_overflow */ | |
292 | bfd_elf_generic_reloc, /* */ | |
293 | "R_MN10300_GOTPC32", /* name */ | |
294 | FALSE, /* partial_inplace */ | |
295 | 0xffffffff, /* src_mask */ | |
296 | 0xffffffff, /* dst_mask */ | |
297 | TRUE), /* pcrel_offset */ | |
298 | ||
299 | HOWTO (R_MN10300_GOTPC16, /* type */ | |
300 | 0, /* rightshift */ | |
301 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
302 | 16, /* bitsize */ | |
303 | TRUE, /* pc_relative */ | |
304 | 0, /* bitpos */ | |
305 | complain_overflow_bitfield, /* complain_on_overflow */ | |
306 | bfd_elf_generic_reloc, /* */ | |
307 | "R_MN10300_GOTPC16", /* name */ | |
308 | FALSE, /* partial_inplace */ | |
309 | 0xffff, /* src_mask */ | |
310 | 0xffff, /* dst_mask */ | |
311 | TRUE), /* pcrel_offset */ | |
312 | ||
313 | HOWTO (R_MN10300_GOTOFF32, /* type */ | |
314 | 0, /* rightshift */ | |
315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
316 | 32, /* bitsize */ | |
317 | FALSE, /* pc_relative */ | |
318 | 0, /* bitpos */ | |
319 | complain_overflow_bitfield, /* complain_on_overflow */ | |
320 | bfd_elf_generic_reloc, /* */ | |
321 | "R_MN10300_GOTOFF32", /* name */ | |
322 | FALSE, /* partial_inplace */ | |
323 | 0xffffffff, /* src_mask */ | |
324 | 0xffffffff, /* dst_mask */ | |
325 | FALSE), /* pcrel_offset */ | |
326 | ||
327 | HOWTO (R_MN10300_GOTOFF24, /* type */ | |
328 | 0, /* rightshift */ | |
329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
330 | 24, /* bitsize */ | |
331 | FALSE, /* pc_relative */ | |
332 | 0, /* bitpos */ | |
333 | complain_overflow_bitfield, /* complain_on_overflow */ | |
334 | bfd_elf_generic_reloc, /* */ | |
335 | "R_MN10300_GOTOFF24", /* name */ | |
336 | FALSE, /* partial_inplace */ | |
337 | 0xffffff, /* src_mask */ | |
338 | 0xffffff, /* dst_mask */ | |
339 | FALSE), /* pcrel_offset */ | |
340 | ||
341 | HOWTO (R_MN10300_GOTOFF16, /* type */ | |
342 | 0, /* rightshift */ | |
343 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
344 | 16, /* bitsize */ | |
345 | FALSE, /* pc_relative */ | |
346 | 0, /* bitpos */ | |
347 | complain_overflow_bitfield, /* complain_on_overflow */ | |
348 | bfd_elf_generic_reloc, /* */ | |
349 | "R_MN10300_GOTOFF16", /* name */ | |
350 | FALSE, /* partial_inplace */ | |
351 | 0xffff, /* src_mask */ | |
352 | 0xffff, /* dst_mask */ | |
353 | FALSE), /* pcrel_offset */ | |
354 | ||
355 | HOWTO (R_MN10300_PLT32, /* type */ | |
356 | 0, /* rightshift */ | |
357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
358 | 32, /* bitsize */ | |
359 | TRUE, /* pc_relative */ | |
360 | 0, /* bitpos */ | |
361 | complain_overflow_bitfield, /* complain_on_overflow */ | |
362 | bfd_elf_generic_reloc, /* */ | |
363 | "R_MN10300_PLT32", /* name */ | |
364 | FALSE, /* partial_inplace */ | |
365 | 0xffffffff, /* src_mask */ | |
366 | 0xffffffff, /* dst_mask */ | |
367 | TRUE), /* pcrel_offset */ | |
368 | ||
369 | HOWTO (R_MN10300_PLT16, /* type */ | |
370 | 0, /* rightshift */ | |
371 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 16, /* bitsize */ | |
373 | TRUE, /* pc_relative */ | |
374 | 0, /* bitpos */ | |
375 | complain_overflow_bitfield, /* complain_on_overflow */ | |
376 | bfd_elf_generic_reloc, /* */ | |
377 | "R_MN10300_PLT16", /* name */ | |
378 | FALSE, /* partial_inplace */ | |
379 | 0xffff, /* src_mask */ | |
380 | 0xffff, /* dst_mask */ | |
381 | TRUE), /* pcrel_offset */ | |
382 | ||
383 | HOWTO (R_MN10300_GOT32, /* type */ | |
384 | 0, /* rightshift */ | |
385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
386 | 32, /* bitsize */ | |
387 | FALSE, /* pc_relative */ | |
388 | 0, /* bitpos */ | |
389 | complain_overflow_bitfield, /* complain_on_overflow */ | |
390 | bfd_elf_generic_reloc, /* */ | |
391 | "R_MN10300_GOT32", /* name */ | |
392 | FALSE, /* partial_inplace */ | |
393 | 0xffffffff, /* src_mask */ | |
394 | 0xffffffff, /* dst_mask */ | |
395 | FALSE), /* pcrel_offset */ | |
396 | ||
397 | HOWTO (R_MN10300_GOT24, /* type */ | |
398 | 0, /* rightshift */ | |
399 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
400 | 24, /* bitsize */ | |
401 | FALSE, /* pc_relative */ | |
402 | 0, /* bitpos */ | |
403 | complain_overflow_bitfield, /* complain_on_overflow */ | |
404 | bfd_elf_generic_reloc, /* */ | |
405 | "R_MN10300_GOT24", /* name */ | |
406 | FALSE, /* partial_inplace */ | |
407 | 0xffffffff, /* src_mask */ | |
408 | 0xffffffff, /* dst_mask */ | |
409 | FALSE), /* pcrel_offset */ | |
410 | ||
411 | HOWTO (R_MN10300_GOT16, /* type */ | |
412 | 0, /* rightshift */ | |
413 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
414 | 16, /* bitsize */ | |
415 | FALSE, /* pc_relative */ | |
416 | 0, /* bitpos */ | |
417 | complain_overflow_bitfield, /* complain_on_overflow */ | |
418 | bfd_elf_generic_reloc, /* */ | |
419 | "R_MN10300_GOT16", /* name */ | |
420 | FALSE, /* partial_inplace */ | |
421 | 0xffffffff, /* src_mask */ | |
422 | 0xffffffff, /* dst_mask */ | |
423 | FALSE), /* pcrel_offset */ | |
424 | ||
425 | HOWTO (R_MN10300_COPY, /* type */ | |
426 | 0, /* rightshift */ | |
427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
428 | 32, /* bitsize */ | |
429 | FALSE, /* pc_relative */ | |
430 | 0, /* bitpos */ | |
431 | complain_overflow_bitfield, /* complain_on_overflow */ | |
432 | bfd_elf_generic_reloc, /* */ | |
433 | "R_MN10300_COPY", /* name */ | |
434 | FALSE, /* partial_inplace */ | |
435 | 0xffffffff, /* src_mask */ | |
436 | 0xffffffff, /* dst_mask */ | |
437 | FALSE), /* pcrel_offset */ | |
438 | ||
439 | HOWTO (R_MN10300_GLOB_DAT, /* type */ | |
440 | 0, /* rightshift */ | |
441 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
442 | 32, /* bitsize */ | |
443 | FALSE, /* pc_relative */ | |
444 | 0, /* bitpos */ | |
445 | complain_overflow_bitfield, /* complain_on_overflow */ | |
446 | bfd_elf_generic_reloc, /* */ | |
447 | "R_MN10300_GLOB_DAT", /* name */ | |
448 | FALSE, /* partial_inplace */ | |
449 | 0xffffffff, /* src_mask */ | |
450 | 0xffffffff, /* dst_mask */ | |
451 | FALSE), /* pcrel_offset */ | |
452 | ||
453 | HOWTO (R_MN10300_JMP_SLOT, /* type */ | |
454 | 0, /* rightshift */ | |
455 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
456 | 32, /* bitsize */ | |
457 | FALSE, /* pc_relative */ | |
458 | 0, /* bitpos */ | |
459 | complain_overflow_bitfield, /* complain_on_overflow */ | |
460 | bfd_elf_generic_reloc, /* */ | |
461 | "R_MN10300_JMP_SLOT", /* name */ | |
462 | FALSE, /* partial_inplace */ | |
463 | 0xffffffff, /* src_mask */ | |
464 | 0xffffffff, /* dst_mask */ | |
465 | FALSE), /* pcrel_offset */ | |
466 | ||
467 | HOWTO (R_MN10300_RELATIVE, /* type */ | |
468 | 0, /* rightshift */ | |
469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 32, /* bitsize */ | |
471 | FALSE, /* pc_relative */ | |
472 | 0, /* bitpos */ | |
473 | complain_overflow_bitfield, /* complain_on_overflow */ | |
474 | bfd_elf_generic_reloc, /* */ | |
475 | "R_MN10300_RELATIVE", /* name */ | |
476 | FALSE, /* partial_inplace */ | |
477 | 0xffffffff, /* src_mask */ | |
478 | 0xffffffff, /* dst_mask */ | |
479 | FALSE), /* pcrel_offset */ | |
bfff1642 | 480 | |
0a22ae8e NC |
481 | HOWTO (R_MN10300_TLS_GD, /* type */ |
482 | 0, /* rightshift */ | |
483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 32, /* bitsize */ | |
485 | FALSE, /* pc_relative */ | |
486 | 0, /* bitpos */ | |
487 | complain_overflow_bitfield, /* complain_on_overflow */ | |
488 | bfd_elf_generic_reloc, /* */ | |
489 | "R_MN10300_TLS_GD", /* name */ | |
490 | FALSE, /* partial_inplace */ | |
491 | 0xffffffff, /* src_mask */ | |
492 | 0xffffffff, /* dst_mask */ | |
493 | FALSE), /* pcrel_offset */ | |
494 | ||
495 | HOWTO (R_MN10300_TLS_LD, /* type */ | |
496 | 0, /* rightshift */ | |
497 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
498 | 32, /* bitsize */ | |
499 | FALSE, /* pc_relative */ | |
500 | 0, /* bitpos */ | |
501 | complain_overflow_bitfield, /* complain_on_overflow */ | |
502 | bfd_elf_generic_reloc, /* */ | |
503 | "R_MN10300_TLS_LD", /* name */ | |
504 | FALSE, /* partial_inplace */ | |
505 | 0xffffffff, /* src_mask */ | |
506 | 0xffffffff, /* dst_mask */ | |
507 | FALSE), /* pcrel_offset */ | |
508 | ||
509 | HOWTO (R_MN10300_TLS_LDO, /* type */ | |
510 | 0, /* rightshift */ | |
511 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
512 | 32, /* bitsize */ | |
513 | FALSE, /* pc_relative */ | |
514 | 0, /* bitpos */ | |
515 | complain_overflow_bitfield, /* complain_on_overflow */ | |
516 | bfd_elf_generic_reloc, /* */ | |
517 | "R_MN10300_TLS_LDO", /* name */ | |
518 | FALSE, /* partial_inplace */ | |
519 | 0xffffffff, /* src_mask */ | |
520 | 0xffffffff, /* dst_mask */ | |
521 | FALSE), /* pcrel_offset */ | |
522 | ||
523 | HOWTO (R_MN10300_TLS_GOTIE, /* type */ | |
524 | 0, /* rightshift */ | |
525 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
526 | 32, /* bitsize */ | |
527 | FALSE, /* pc_relative */ | |
528 | 0, /* bitpos */ | |
529 | complain_overflow_bitfield, /* complain_on_overflow */ | |
530 | bfd_elf_generic_reloc, /* */ | |
531 | "R_MN10300_TLS_GOTIE", /* name */ | |
532 | FALSE, /* partial_inplace */ | |
533 | 0xffffffff, /* src_mask */ | |
534 | 0xffffffff, /* dst_mask */ | |
535 | FALSE), /* pcrel_offset */ | |
536 | ||
537 | HOWTO (R_MN10300_TLS_IE, /* type */ | |
538 | 0, /* rightshift */ | |
539 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
540 | 32, /* bitsize */ | |
541 | FALSE, /* pc_relative */ | |
542 | 0, /* bitpos */ | |
543 | complain_overflow_bitfield, /* complain_on_overflow */ | |
544 | bfd_elf_generic_reloc, /* */ | |
545 | "R_MN10300_TLS_IE", /* name */ | |
546 | FALSE, /* partial_inplace */ | |
547 | 0xffffffff, /* src_mask */ | |
548 | 0xffffffff, /* dst_mask */ | |
549 | FALSE), /* pcrel_offset */ | |
550 | ||
551 | HOWTO (R_MN10300_TLS_LE, /* type */ | |
552 | 0, /* rightshift */ | |
553 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
554 | 32, /* bitsize */ | |
555 | FALSE, /* pc_relative */ | |
556 | 0, /* bitpos */ | |
557 | complain_overflow_bitfield, /* complain_on_overflow */ | |
558 | bfd_elf_generic_reloc, /* */ | |
559 | "R_MN10300_TLS_LE", /* name */ | |
560 | FALSE, /* partial_inplace */ | |
561 | 0xffffffff, /* src_mask */ | |
562 | 0xffffffff, /* dst_mask */ | |
563 | FALSE), /* pcrel_offset */ | |
564 | ||
565 | HOWTO (R_MN10300_TLS_DTPMOD, /* type */ | |
566 | 0, /* rightshift */ | |
567 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
568 | 32, /* bitsize */ | |
569 | FALSE, /* pc_relative */ | |
570 | 0, /* bitpos */ | |
571 | complain_overflow_bitfield, /* complain_on_overflow */ | |
572 | bfd_elf_generic_reloc, /* */ | |
573 | "R_MN10300_TLS_DTPMOD", /* name */ | |
574 | FALSE, /* partial_inplace */ | |
575 | 0xffffffff, /* src_mask */ | |
576 | 0xffffffff, /* dst_mask */ | |
577 | FALSE), /* pcrel_offset */ | |
578 | ||
579 | HOWTO (R_MN10300_TLS_DTPOFF, /* type */ | |
580 | 0, /* rightshift */ | |
581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 32, /* bitsize */ | |
583 | FALSE, /* pc_relative */ | |
584 | 0, /* bitpos */ | |
585 | complain_overflow_bitfield, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* */ | |
587 | "R_MN10300_TLS_DTPOFF", /* name */ | |
588 | FALSE, /* partial_inplace */ | |
589 | 0xffffffff, /* src_mask */ | |
590 | 0xffffffff, /* dst_mask */ | |
591 | FALSE), /* pcrel_offset */ | |
592 | ||
593 | HOWTO (R_MN10300_TLS_TPOFF, /* type */ | |
594 | 0, /* rightshift */ | |
595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 32, /* bitsize */ | |
597 | FALSE, /* pc_relative */ | |
598 | 0, /* bitpos */ | |
599 | complain_overflow_bitfield, /* complain_on_overflow */ | |
600 | bfd_elf_generic_reloc, /* */ | |
601 | "R_MN10300_TLS_TPOFF", /* name */ | |
602 | FALSE, /* partial_inplace */ | |
603 | 0xffffffff, /* src_mask */ | |
604 | 0xffffffff, /* dst_mask */ | |
605 | FALSE), /* pcrel_offset */ | |
68ffbac6 | 606 | |
bfff1642 NC |
607 | HOWTO (R_MN10300_SYM_DIFF, /* type */ |
608 | 0, /* rightshift */ | |
609 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
610 | 32, /* bitsize */ | |
611 | FALSE, /* pc_relative */ | |
612 | 0, /* bitpos */ | |
613 | complain_overflow_dont,/* complain_on_overflow */ | |
614 | NULL, /* special handler. */ | |
615 | "R_MN10300_SYM_DIFF", /* name */ | |
616 | FALSE, /* partial_inplace */ | |
617 | 0xffffffff, /* src_mask */ | |
618 | 0xffffffff, /* dst_mask */ | |
569006e5 NC |
619 | FALSE), /* pcrel_offset */ |
620 | ||
621 | HOWTO (R_MN10300_ALIGN, /* type */ | |
622 | 0, /* rightshift */ | |
623 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
624 | 32, /* bitsize */ | |
625 | FALSE, /* pc_relative */ | |
626 | 0, /* bitpos */ | |
627 | complain_overflow_dont,/* complain_on_overflow */ | |
628 | NULL, /* special handler. */ | |
629 | "R_MN10300_ALIGN", /* name */ | |
630 | FALSE, /* partial_inplace */ | |
631 | 0, /* src_mask */ | |
632 | 0, /* dst_mask */ | |
bfff1642 | 633 | FALSE) /* pcrel_offset */ |
252b5132 RH |
634 | }; |
635 | ||
603b7257 NC |
636 | struct mn10300_reloc_map |
637 | { | |
252b5132 RH |
638 | bfd_reloc_code_real_type bfd_reloc_val; |
639 | unsigned char elf_reloc_val; | |
640 | }; | |
641 | ||
603b7257 NC |
642 | static const struct mn10300_reloc_map mn10300_reloc_map[] = |
643 | { | |
252b5132 RH |
644 | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
645 | { BFD_RELOC_32, R_MN10300_32, }, | |
646 | { BFD_RELOC_16, R_MN10300_16, }, | |
647 | { BFD_RELOC_8, R_MN10300_8, }, | |
648 | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, | |
649 | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, | |
650 | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, | |
651 | { BFD_RELOC_24, R_MN10300_24, }, | |
652 | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, | |
653 | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, | |
03a12831 AO |
654 | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
655 | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, | |
656 | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, | |
657 | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, | |
658 | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, | |
659 | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, | |
660 | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, | |
661 | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, | |
662 | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, | |
663 | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, | |
664 | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, | |
665 | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, | |
666 | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, | |
667 | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, | |
0a22ae8e NC |
668 | { BFD_RELOC_MN10300_TLS_GD, R_MN10300_TLS_GD }, |
669 | { BFD_RELOC_MN10300_TLS_LD, R_MN10300_TLS_LD }, | |
670 | { BFD_RELOC_MN10300_TLS_LDO, R_MN10300_TLS_LDO }, | |
671 | { BFD_RELOC_MN10300_TLS_GOTIE, R_MN10300_TLS_GOTIE }, | |
672 | { BFD_RELOC_MN10300_TLS_IE, R_MN10300_TLS_IE }, | |
673 | { BFD_RELOC_MN10300_TLS_LE, R_MN10300_TLS_LE }, | |
674 | { BFD_RELOC_MN10300_TLS_DTPMOD, R_MN10300_TLS_DTPMOD }, | |
675 | { BFD_RELOC_MN10300_TLS_DTPOFF, R_MN10300_TLS_DTPOFF }, | |
676 | { BFD_RELOC_MN10300_TLS_TPOFF, R_MN10300_TLS_TPOFF }, | |
569006e5 NC |
677 | { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF }, |
678 | { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN } | |
252b5132 RH |
679 | }; |
680 | ||
03a12831 AO |
681 | /* Create the GOT section. */ |
682 | ||
683 | static bfd_boolean | |
603b7257 NC |
684 | _bfd_mn10300_elf_create_got_section (bfd * abfd, |
685 | struct bfd_link_info * info) | |
03a12831 AO |
686 | { |
687 | flagword flags; | |
688 | flagword pltflags; | |
689 | asection * s; | |
690 | struct elf_link_hash_entry * h; | |
9c5bfbb7 | 691 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
3d4d4302 | 692 | struct elf_link_hash_table *htab; |
03a12831 AO |
693 | int ptralign; |
694 | ||
695 | /* This function may be called more than once. */ | |
3d4d4302 AM |
696 | htab = elf_hash_table (info); |
697 | if (htab->sgot != NULL) | |
03a12831 AO |
698 | return TRUE; |
699 | ||
700 | switch (bed->s->arch_size) | |
701 | { | |
702 | case 32: | |
703 | ptralign = 2; | |
704 | break; | |
705 | ||
706 | case 64: | |
707 | ptralign = 3; | |
708 | break; | |
709 | ||
710 | default: | |
711 | bfd_set_error (bfd_error_bad_value); | |
712 | return FALSE; | |
713 | } | |
714 | ||
715 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
716 | | SEC_LINKER_CREATED); | |
717 | ||
718 | pltflags = flags; | |
719 | pltflags |= SEC_CODE; | |
720 | if (bed->plt_not_loaded) | |
721 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
722 | if (bed->plt_readonly) | |
723 | pltflags |= SEC_READONLY; | |
724 | ||
3d4d4302 AM |
725 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
726 | htab->splt = s; | |
03a12831 | 727 | if (s == NULL |
03a12831 AO |
728 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
729 | return FALSE; | |
730 | ||
d98685ac AM |
731 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
732 | .plt section. */ | |
7325306f RS |
733 | if (bed->want_plt_sym) |
734 | { | |
735 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
736 | "_PROCEDURE_LINKAGE_TABLE_"); | |
3d4d4302 | 737 | htab->hplt = h; |
7325306f RS |
738 | if (h == NULL) |
739 | return FALSE; | |
740 | } | |
03a12831 | 741 | |
3d4d4302 AM |
742 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
743 | htab->sgot = s; | |
03a12831 | 744 | if (s == NULL |
03a12831 AO |
745 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
746 | return FALSE; | |
747 | ||
748 | if (bed->want_got_plt) | |
749 | { | |
3d4d4302 AM |
750 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); |
751 | htab->sgotplt = s; | |
03a12831 | 752 | if (s == NULL |
03a12831 AO |
753 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
754 | return FALSE; | |
755 | } | |
756 | ||
757 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
758 | (or .got.plt) section. We don't do this in the linker script | |
759 | because we don't want to define the symbol if we are not creating | |
760 | a global offset table. */ | |
d98685ac | 761 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
3d4d4302 | 762 | htab->hgot = h; |
d98685ac AM |
763 | if (h == NULL) |
764 | return FALSE; | |
03a12831 AO |
765 | |
766 | /* The first bit of the global offset table is the header. */ | |
3b36f7e6 | 767 | s->size += bed->got_header_size; |
03a12831 AO |
768 | |
769 | return TRUE; | |
770 | } | |
771 | ||
252b5132 | 772 | static reloc_howto_type * |
603b7257 NC |
773 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
774 | bfd_reloc_code_real_type code) | |
252b5132 RH |
775 | { |
776 | unsigned int i; | |
777 | ||
603b7257 NC |
778 | for (i = ARRAY_SIZE (mn10300_reloc_map); i--;) |
779 | if (mn10300_reloc_map[i].bfd_reloc_val == code) | |
780 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; | |
252b5132 RH |
781 | |
782 | return NULL; | |
783 | } | |
784 | ||
157090f7 AM |
785 | static reloc_howto_type * |
786 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
787 | const char *r_name) | |
788 | { | |
789 | unsigned int i; | |
790 | ||
603b7257 | 791 | for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;) |
157090f7 AM |
792 | if (elf_mn10300_howto_table[i].name != NULL |
793 | && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0) | |
603b7257 | 794 | return elf_mn10300_howto_table + i; |
157090f7 AM |
795 | |
796 | return NULL; | |
797 | } | |
798 | ||
252b5132 RH |
799 | /* Set the howto pointer for an MN10300 ELF reloc. */ |
800 | ||
801 | static void | |
603b7257 NC |
802 | mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
803 | arelent *cache_ptr, | |
804 | Elf_Internal_Rela *dst) | |
252b5132 RH |
805 | { |
806 | unsigned int r_type; | |
807 | ||
808 | r_type = ELF32_R_TYPE (dst->r_info); | |
809 | BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); | |
603b7257 | 810 | cache_ptr->howto = elf_mn10300_howto_table + r_type; |
252b5132 RH |
811 | } |
812 | ||
0a22ae8e NC |
813 | static int |
814 | elf_mn10300_tls_transition (struct bfd_link_info * info, | |
815 | int r_type, | |
816 | struct elf_link_hash_entry * h, | |
817 | asection * sec, | |
818 | bfd_boolean counting) | |
819 | { | |
820 | bfd_boolean is_local; | |
821 | ||
822 | if (r_type == R_MN10300_TLS_GD | |
823 | && h != NULL | |
824 | && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_IE) | |
825 | return R_MN10300_TLS_GOTIE; | |
826 | ||
827 | if (info->shared) | |
828 | return r_type; | |
829 | ||
830 | if (! (sec->flags & SEC_CODE)) | |
831 | return r_type; | |
832 | ||
833 | if (! counting && h != NULL && ! elf_hash_table (info)->dynamic_sections_created) | |
834 | is_local = TRUE; | |
835 | else | |
836 | is_local = SYMBOL_CALLS_LOCAL (info, h); | |
837 | ||
838 | /* For the main program, these are the transitions we do. */ | |
839 | switch (r_type) | |
840 | { | |
841 | case R_MN10300_TLS_GD: return is_local ? R_MN10300_TLS_LE : R_MN10300_TLS_GOTIE; | |
842 | case R_MN10300_TLS_LD: return R_MN10300_NONE; | |
843 | case R_MN10300_TLS_LDO: return R_MN10300_TLS_LE; | |
844 | case R_MN10300_TLS_IE: | |
845 | case R_MN10300_TLS_GOTIE: return is_local ? R_MN10300_TLS_LE : r_type; | |
846 | } | |
847 | ||
848 | return r_type; | |
849 | } | |
850 | ||
851 | /* Return the relocation value for @tpoff relocation | |
852 | if STT_TLS virtual address is ADDRESS. */ | |
853 | ||
854 | static bfd_vma | |
855 | dtpoff (struct bfd_link_info * info, bfd_vma address) | |
856 | { | |
857 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
858 | ||
859 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
860 | if (htab->tls_sec == NULL) | |
861 | return 0; | |
862 | return address - htab->tls_sec->vma; | |
863 | } | |
864 | ||
865 | /* Return the relocation value for @tpoff relocation | |
866 | if STT_TLS virtual address is ADDRESS. */ | |
867 | ||
868 | static bfd_vma | |
869 | tpoff (struct bfd_link_info * info, bfd_vma address) | |
870 | { | |
871 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
872 | ||
873 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
874 | if (htab->tls_sec == NULL) | |
875 | return 0; | |
876 | return address - (htab->tls_size + htab->tls_sec->vma); | |
877 | } | |
878 | ||
879 | /* Returns nonzero if there's a R_MN10300_PLT32 reloc that we now need | |
880 | to skip, after this one. The actual value is the offset between | |
881 | this reloc and the PLT reloc. */ | |
882 | ||
883 | static int | |
884 | mn10300_do_tls_transition (bfd * input_bfd, | |
885 | unsigned int r_type, | |
886 | unsigned int tls_r_type, | |
887 | bfd_byte * contents, | |
888 | bfd_vma offset) | |
889 | { | |
890 | bfd_byte *op = contents + offset; | |
891 | int gotreg = 0; | |
892 | ||
893 | #define TLS_PAIR(r1,r2) ((r1) * R_MN10300_MAX + (r2)) | |
894 | ||
895 | /* This is common to all GD/LD transitions, so break it out. */ | |
896 | if (r_type == R_MN10300_TLS_GD | |
897 | || r_type == R_MN10300_TLS_LD) | |
898 | { | |
899 | op -= 2; | |
900 | /* mov imm,d0. */ | |
901 | BFD_ASSERT (bfd_get_8 (input_bfd, op) == 0xFC); | |
902 | BFD_ASSERT (bfd_get_8 (input_bfd, op + 1) == 0xCC); | |
903 | /* add aN,d0. */ | |
904 | BFD_ASSERT (bfd_get_8 (input_bfd, op + 6) == 0xF1); | |
905 | gotreg = (bfd_get_8 (input_bfd, op + 7) & 0x0c) >> 2; | |
906 | /* Call. */ | |
907 | BFD_ASSERT (bfd_get_8 (input_bfd, op + 8) == 0xDD); | |
908 | } | |
909 | ||
910 | switch (TLS_PAIR (r_type, tls_r_type)) | |
911 | { | |
912 | case TLS_PAIR (R_MN10300_TLS_GD, R_MN10300_TLS_GOTIE): | |
913 | { | |
914 | /* Keep track of which register we put GOTptr in. */ | |
915 | /* mov (_x@indntpoff,a2),a0. */ | |
916 | memcpy (op, "\xFC\x20\x00\x00\x00\x00", 6); | |
917 | op[1] |= gotreg; | |
918 | /* add e2,a0. */ | |
919 | memcpy (op+6, "\xF9\x78\x28", 3); | |
920 | /* or 0x00000000, d0 - six byte nop. */ | |
921 | memcpy (op+9, "\xFC\xE4\x00\x00\x00\x00", 6); | |
922 | } | |
923 | return 7; | |
924 | ||
925 | case TLS_PAIR (R_MN10300_TLS_GD, R_MN10300_TLS_LE): | |
926 | { | |
927 | /* Register is *always* a0. */ | |
928 | /* mov _x@tpoff,a0. */ | |
929 | memcpy (op, "\xFC\xDC\x00\x00\x00\x00", 6); | |
930 | /* add e2,a0. */ | |
931 | memcpy (op+6, "\xF9\x78\x28", 3); | |
932 | /* or 0x00000000, d0 - six byte nop. */ | |
933 | memcpy (op+9, "\xFC\xE4\x00\x00\x00\x00", 6); | |
934 | } | |
935 | return 7; | |
936 | case TLS_PAIR (R_MN10300_TLS_LD, R_MN10300_NONE): | |
937 | { | |
938 | /* Register is *always* a0. */ | |
939 | /* mov e2,a0. */ | |
940 | memcpy (op, "\xF5\x88", 2); | |
941 | /* or 0x00000000, d0 - six byte nop. */ | |
942 | memcpy (op+2, "\xFC\xE4\x00\x00\x00\x00", 6); | |
943 | /* or 0x00000000, e2 - seven byte nop. */ | |
944 | memcpy (op+8, "\xFE\x19\x22\x00\x00\x00\x00", 7); | |
945 | } | |
946 | return 7; | |
947 | ||
948 | case TLS_PAIR (R_MN10300_TLS_LDO, R_MN10300_TLS_LE): | |
949 | /* No changes needed, just the reloc change. */ | |
950 | return 0; | |
951 | ||
952 | /* These are a little tricky, because we have to detect which | |
953 | opcode is being used (they're different sizes, with the reloc | |
954 | at different offsets within the opcode) and convert each | |
955 | accordingly, copying the operands as needed. The conversions | |
956 | we do are as follows (IE,GOTIE,LE): | |
957 | ||
958 | 1111 1100 1010 01Dn [-- abs32 --] MOV (x@indntpoff),Dn | |
959 | 1111 1100 0000 DnAm [-- abs32 --] MOV (x@gotntpoff,Am),Dn | |
960 | 1111 1100 1100 11Dn [-- abs32 --] MOV x@tpoff,Dn | |
961 | ||
962 | 1111 1100 1010 00An [-- abs32 --] MOV (x@indntpoff),An | |
963 | 1111 1100 0010 AnAm [-- abs32 --] MOV (x@gotntpoff,Am),An | |
964 | 1111 1100 1101 11An [-- abs32 --] MOV x@tpoff,An | |
965 | ||
966 | 1111 1110 0000 1110 Rnnn Xxxx [-- abs32 --] MOV (x@indntpoff),Rn | |
967 | 1111 1110 0000 1010 Rnnn Rmmm [-- abs32 --] MOV (x@indntpoff,Rm),Rn | |
968 | 1111 1110 0000 1000 Rnnn Xxxx [-- abs32 --] MOV x@tpoff,Rn | |
969 | ||
970 | Since the GOT pointer is always $a2, we assume the last | |
971 | normally won't happen, but let's be paranoid and plan for the | |
972 | day that GCC optimizes it somewhow. */ | |
973 | ||
974 | case TLS_PAIR (R_MN10300_TLS_IE, R_MN10300_TLS_LE): | |
975 | if (op[-2] == 0xFC) | |
976 | { | |
977 | op -= 2; | |
978 | if ((op[1] & 0xFC) == 0xA4) /* Dn */ | |
979 | { | |
980 | op[1] &= 0x03; /* Leaves Dn. */ | |
981 | op[1] |= 0xCC; | |
982 | } | |
983 | else /* An */ | |
984 | { | |
985 | op[1] &= 0x03; /* Leaves An. */ | |
986 | op[1] |= 0xDC; | |
987 | } | |
988 | } | |
989 | else if (op[-3] == 0xFE) | |
990 | op[-2] = 0x08; | |
991 | else | |
992 | abort (); | |
993 | break; | |
994 | ||
995 | case TLS_PAIR (R_MN10300_TLS_GOTIE, R_MN10300_TLS_LE): | |
996 | if (op[-2] == 0xFC) | |
997 | { | |
998 | op -= 2; | |
999 | if ((op[1] & 0xF0) == 0x00) /* Dn */ | |
1000 | { | |
1001 | op[1] &= 0x0C; /* Leaves Dn. */ | |
1002 | op[1] >>= 2; | |
1003 | op[1] |= 0xCC; | |
1004 | } | |
1005 | else /* An */ | |
1006 | { | |
1007 | op[1] &= 0x0C; /* Leaves An. */ | |
1008 | op[1] >>= 2; | |
1009 | op[1] |= 0xDC; | |
1010 | } | |
1011 | } | |
1012 | else if (op[-3] == 0xFE) | |
1013 | op[-2] = 0x08; | |
1014 | else | |
1015 | abort (); | |
1016 | break; | |
1017 | ||
1018 | default: | |
1019 | (*_bfd_error_handler) | |
1020 | (_("%s: Unsupported transition from %s to %s"), | |
1021 | bfd_get_filename (input_bfd), | |
1022 | elf_mn10300_howto_table[r_type].name, | |
1023 | elf_mn10300_howto_table[tls_r_type].name); | |
1024 | break; | |
1025 | } | |
1026 | #undef TLS_PAIR | |
1027 | return 0; | |
1028 | } | |
1029 | ||
252b5132 RH |
1030 | /* Look through the relocs for a section during the first phase. |
1031 | Since we don't do .gots or .plts, we just need to consider the | |
1032 | virtual table relocs for gc. */ | |
1033 | ||
b34976b6 | 1034 | static bfd_boolean |
603b7257 NC |
1035 | mn10300_elf_check_relocs (bfd *abfd, |
1036 | struct bfd_link_info *info, | |
1037 | asection *sec, | |
1038 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1039 | { |
0a22ae8e | 1040 | struct elf32_mn10300_link_hash_table * htab = elf32_mn10300_hash_table (info); |
bfff1642 | 1041 | bfd_boolean sym_diff_reloc_seen; |
252b5132 | 1042 | Elf_Internal_Shdr *symtab_hdr; |
62d7f790 | 1043 | Elf_Internal_Sym * isymbuf = NULL; |
5582a088 | 1044 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
1045 | const Elf_Internal_Rela *rel; |
1046 | const Elf_Internal_Rela *rel_end; | |
03a12831 AO |
1047 | bfd * dynobj; |
1048 | bfd_vma * local_got_offsets; | |
1049 | asection * sgot; | |
1050 | asection * srelgot; | |
1051 | asection * sreloc; | |
62d7f790 | 1052 | bfd_boolean result = FALSE; |
03a12831 AO |
1053 | |
1054 | sgot = NULL; | |
1055 | srelgot = NULL; | |
1056 | sreloc = NULL; | |
252b5132 | 1057 | |
1049f94e | 1058 | if (info->relocatable) |
b34976b6 | 1059 | return TRUE; |
252b5132 RH |
1060 | |
1061 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
62d7f790 | 1062 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
252b5132 | 1063 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1064 | |
03a12831 AO |
1065 | dynobj = elf_hash_table (info)->dynobj; |
1066 | local_got_offsets = elf_local_got_offsets (abfd); | |
252b5132 | 1067 | rel_end = relocs + sec->reloc_count; |
bfff1642 | 1068 | sym_diff_reloc_seen = FALSE; |
603b7257 | 1069 | |
252b5132 RH |
1070 | for (rel = relocs; rel < rel_end; rel++) |
1071 | { | |
1072 | struct elf_link_hash_entry *h; | |
1073 | unsigned long r_symndx; | |
62d7f790 | 1074 | unsigned int r_type; |
0a22ae8e | 1075 | int tls_type = GOT_NORMAL; |
252b5132 RH |
1076 | |
1077 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1078 | if (r_symndx < symtab_hdr->sh_info) | |
1079 | h = NULL; | |
1080 | else | |
973a3492 L |
1081 | { |
1082 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1083 | while (h->root.type == bfd_link_hash_indirect | |
1084 | || h->root.type == bfd_link_hash_warning) | |
1085 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
1086 | |
1087 | /* PR15323, ref flags aren't set for references in the same | |
1088 | object. */ | |
1089 | h->root.non_ir_ref = 1; | |
973a3492 | 1090 | } |
252b5132 | 1091 | |
62d7f790 | 1092 | r_type = ELF32_R_TYPE (rel->r_info); |
0a22ae8e | 1093 | r_type = elf_mn10300_tls_transition (info, r_type, h, sec, TRUE); |
62d7f790 | 1094 | |
03a12831 AO |
1095 | /* Some relocs require a global offset table. */ |
1096 | if (dynobj == NULL) | |
1097 | { | |
62d7f790 | 1098 | switch (r_type) |
03a12831 AO |
1099 | { |
1100 | case R_MN10300_GOT32: | |
1101 | case R_MN10300_GOT24: | |
1102 | case R_MN10300_GOT16: | |
1103 | case R_MN10300_GOTOFF32: | |
1104 | case R_MN10300_GOTOFF24: | |
1105 | case R_MN10300_GOTOFF16: | |
1106 | case R_MN10300_GOTPC32: | |
1107 | case R_MN10300_GOTPC16: | |
0a22ae8e NC |
1108 | case R_MN10300_TLS_GD: |
1109 | case R_MN10300_TLS_LD: | |
1110 | case R_MN10300_TLS_GOTIE: | |
1111 | case R_MN10300_TLS_IE: | |
03a12831 AO |
1112 | elf_hash_table (info)->dynobj = dynobj = abfd; |
1113 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) | |
62d7f790 | 1114 | goto fail; |
03a12831 AO |
1115 | break; |
1116 | ||
1117 | default: | |
1118 | break; | |
1119 | } | |
1120 | } | |
1121 | ||
62d7f790 | 1122 | switch (r_type) |
252b5132 RH |
1123 | { |
1124 | /* This relocation describes the C++ object vtable hierarchy. | |
1125 | Reconstruct it for later use during GC. */ | |
1126 | case R_MN10300_GNU_VTINHERIT: | |
c152c796 | 1127 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
62d7f790 | 1128 | goto fail; |
252b5132 RH |
1129 | break; |
1130 | ||
1131 | /* This relocation describes which C++ vtable entries are actually | |
1132 | used. Record for later use during GC. */ | |
1133 | case R_MN10300_GNU_VTENTRY: | |
d17e0c6e JB |
1134 | BFD_ASSERT (h != NULL); |
1135 | if (h != NULL | |
1136 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
62d7f790 | 1137 | goto fail; |
252b5132 | 1138 | break; |
62d7f790 | 1139 | |
0a22ae8e NC |
1140 | case R_MN10300_TLS_LD: |
1141 | htab->tls_ldm_got.refcount ++; | |
1142 | tls_type = GOT_TLS_LD; | |
1143 | ||
1144 | if (htab->tls_ldm_got.got_allocated) | |
1145 | break; | |
1146 | goto create_got; | |
1147 | ||
1148 | case R_MN10300_TLS_IE: | |
1149 | case R_MN10300_TLS_GOTIE: | |
1150 | if (info->shared) | |
1151 | info->flags |= DF_STATIC_TLS; | |
1152 | /* Fall through */ | |
68ffbac6 | 1153 | |
0a22ae8e | 1154 | case R_MN10300_TLS_GD: |
03a12831 AO |
1155 | case R_MN10300_GOT32: |
1156 | case R_MN10300_GOT24: | |
1157 | case R_MN10300_GOT16: | |
0a22ae8e | 1158 | create_got: |
03a12831 AO |
1159 | /* This symbol requires a global offset table entry. */ |
1160 | ||
0a22ae8e NC |
1161 | switch (r_type) |
1162 | { | |
1163 | case R_MN10300_TLS_IE: | |
1164 | case R_MN10300_TLS_GOTIE: tls_type = GOT_TLS_IE; break; | |
1165 | case R_MN10300_TLS_GD: tls_type = GOT_TLS_GD; break; | |
1166 | default: tls_type = GOT_NORMAL; break; | |
1167 | } | |
1168 | ||
03a12831 AO |
1169 | if (sgot == NULL) |
1170 | { | |
3d4d4302 | 1171 | sgot = htab->root.sgot; |
03a12831 AO |
1172 | BFD_ASSERT (sgot != NULL); |
1173 | } | |
1174 | ||
1175 | if (srelgot == NULL | |
1176 | && (h != NULL || info->shared)) | |
1177 | { | |
3d4d4302 | 1178 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
03a12831 AO |
1179 | if (srelgot == NULL) |
1180 | { | |
3d4d4302 AM |
1181 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
1182 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
1183 | | SEC_READONLY); | |
1184 | srelgot = bfd_make_section_anyway_with_flags (dynobj, | |
1185 | ".rela.got", | |
1186 | flags); | |
03a12831 | 1187 | if (srelgot == NULL |
03a12831 | 1188 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) |
62d7f790 | 1189 | goto fail; |
03a12831 AO |
1190 | } |
1191 | } | |
1192 | ||
0a22ae8e NC |
1193 | if (r_type == R_MN10300_TLS_LD) |
1194 | { | |
1195 | htab->tls_ldm_got.offset = sgot->size; | |
1196 | htab->tls_ldm_got.got_allocated ++; | |
1197 | } | |
1198 | else if (h != NULL) | |
03a12831 | 1199 | { |
0a22ae8e NC |
1200 | if (elf_mn10300_hash_entry (h)->tls_type != tls_type |
1201 | && elf_mn10300_hash_entry (h)->tls_type != GOT_UNKNOWN) | |
1202 | { | |
1203 | if (tls_type == GOT_TLS_IE | |
1204 | && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_GD) | |
1205 | /* No change - this is ok. */; | |
1206 | else if (tls_type == GOT_TLS_GD | |
1207 | && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_IE) | |
1208 | /* Transition GD->IE. */ | |
1209 | tls_type = GOT_TLS_IE; | |
1210 | else | |
1211 | (*_bfd_error_handler) | |
1212 | (_("%B: %s' accessed both as normal and thread local symbol"), | |
1213 | abfd, h ? h->root.root.string : "<local>"); | |
1214 | } | |
1215 | ||
1216 | elf_mn10300_hash_entry (h)->tls_type = tls_type; | |
1217 | ||
03a12831 AO |
1218 | if (h->got.offset != (bfd_vma) -1) |
1219 | /* We have already allocated space in the .got. */ | |
1220 | break; | |
1221 | ||
eea6121a | 1222 | h->got.offset = sgot->size; |
03a12831 | 1223 | |
0a22ae8e NC |
1224 | if (ELF_ST_VISIBILITY (h->other) != STV_INTERNAL |
1225 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1226 | && h->dynindx == -1) | |
03a12831 | 1227 | { |
c152c796 | 1228 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
62d7f790 | 1229 | goto fail; |
03a12831 AO |
1230 | } |
1231 | ||
eea6121a | 1232 | srelgot->size += sizeof (Elf32_External_Rela); |
0a22ae8e NC |
1233 | if (r_type == R_MN10300_TLS_GD) |
1234 | srelgot->size += sizeof (Elf32_External_Rela); | |
03a12831 AO |
1235 | } |
1236 | else | |
1237 | { | |
1238 | /* This is a global offset table entry for a local | |
3b36f7e6 | 1239 | symbol. */ |
03a12831 AO |
1240 | if (local_got_offsets == NULL) |
1241 | { | |
1242 | size_t size; | |
1243 | unsigned int i; | |
1244 | ||
0a22ae8e | 1245 | size = symtab_hdr->sh_info * (sizeof (bfd_vma) + sizeof (char)); |
603b7257 | 1246 | local_got_offsets = bfd_alloc (abfd, size); |
03a12831 AO |
1247 | |
1248 | if (local_got_offsets == NULL) | |
62d7f790 NC |
1249 | goto fail; |
1250 | ||
03a12831 | 1251 | elf_local_got_offsets (abfd) = local_got_offsets; |
0a22ae8e NC |
1252 | elf_mn10300_local_got_tls_type (abfd) |
1253 | = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
03a12831 AO |
1254 | |
1255 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1256 | local_got_offsets[i] = (bfd_vma) -1; | |
1257 | } | |
1258 | ||
1259 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
1260 | /* We have already allocated space in the .got. */ | |
1261 | break; | |
1262 | ||
eea6121a | 1263 | local_got_offsets[r_symndx] = sgot->size; |
03a12831 AO |
1264 | |
1265 | if (info->shared) | |
0a22ae8e NC |
1266 | { |
1267 | /* If we are generating a shared object, we need to | |
1268 | output a R_MN10300_RELATIVE reloc so that the dynamic | |
1269 | linker can adjust this GOT entry. */ | |
1270 | srelgot->size += sizeof (Elf32_External_Rela); | |
1271 | ||
1272 | if (r_type == R_MN10300_TLS_GD) | |
1273 | /* And a R_MN10300_TLS_DTPOFF reloc as well. */ | |
1274 | srelgot->size += sizeof (Elf32_External_Rela); | |
1275 | } | |
1276 | ||
1277 | elf_mn10300_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
03a12831 AO |
1278 | } |
1279 | ||
eea6121a | 1280 | sgot->size += 4; |
0a22ae8e NC |
1281 | if (r_type == R_MN10300_TLS_GD |
1282 | || r_type == R_MN10300_TLS_LD) | |
1283 | sgot->size += 4; | |
1284 | ||
1285 | goto need_shared_relocs; | |
03a12831 AO |
1286 | |
1287 | case R_MN10300_PLT32: | |
1288 | case R_MN10300_PLT16: | |
1289 | /* This symbol requires a procedure linkage table entry. We | |
1290 | actually build the entry in adjust_dynamic_symbol, | |
1291 | because this might be a case of linking PIC code which is | |
1292 | never referenced by a dynamic object, in which case we | |
1293 | don't need to generate a procedure linkage table entry | |
1294 | after all. */ | |
1295 | ||
1296 | /* If this is a local symbol, we resolve it directly without | |
1297 | creating a procedure linkage table entry. */ | |
1298 | if (h == NULL) | |
1299 | continue; | |
1300 | ||
1301 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
1302 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
1303 | break; | |
1304 | ||
f5385ebf | 1305 | h->needs_plt = 1; |
03a12831 AO |
1306 | break; |
1307 | ||
03a12831 AO |
1308 | case R_MN10300_24: |
1309 | case R_MN10300_16: | |
1310 | case R_MN10300_8: | |
1311 | case R_MN10300_PCREL32: | |
1312 | case R_MN10300_PCREL16: | |
1313 | case R_MN10300_PCREL8: | |
1314 | if (h != NULL) | |
f5385ebf | 1315 | h->non_got_ref = 1; |
146ccdbb | 1316 | break; |
03a12831 | 1317 | |
bfff1642 NC |
1318 | case R_MN10300_SYM_DIFF: |
1319 | sym_diff_reloc_seen = TRUE; | |
1320 | break; | |
1321 | ||
146ccdbb AO |
1322 | case R_MN10300_32: |
1323 | if (h != NULL) | |
f5385ebf | 1324 | h->non_got_ref = 1; |
146ccdbb | 1325 | |
0a22ae8e | 1326 | need_shared_relocs: |
bfff1642 NC |
1327 | /* If we are creating a shared library, then we |
1328 | need to copy the reloc into the shared library. */ | |
03a12831 | 1329 | if (info->shared |
bfff1642 NC |
1330 | && (sec->flags & SEC_ALLOC) != 0 |
1331 | /* Do not generate a dynamic reloc for a | |
1332 | reloc associated with a SYM_DIFF operation. */ | |
1333 | && ! sym_diff_reloc_seen) | |
03a12831 | 1334 | { |
bfff1642 | 1335 | asection * sym_section = NULL; |
03a12831 | 1336 | |
bfff1642 NC |
1337 | /* Find the section containing the |
1338 | symbol involved in the relocation. */ | |
1339 | if (h == NULL) | |
1340 | { | |
bfff1642 NC |
1341 | Elf_Internal_Sym * isym; |
1342 | ||
bfff1642 NC |
1343 | if (isymbuf == NULL) |
1344 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1345 | symtab_hdr->sh_info, 0, | |
1346 | NULL, NULL, NULL); | |
1347 | if (isymbuf) | |
1348 | { | |
1349 | isym = isymbuf + r_symndx; | |
1350 | /* All we care about is whether this local symbol is absolute. */ | |
1351 | if (isym->st_shndx == SHN_ABS) | |
1352 | sym_section = bfd_abs_section_ptr; | |
1353 | } | |
1354 | } | |
1355 | else | |
1356 | { | |
1357 | if (h->root.type == bfd_link_hash_defined | |
1358 | || h->root.type == bfd_link_hash_defweak) | |
1359 | sym_section = h->root.u.def.section; | |
1360 | } | |
03a12831 | 1361 | |
bfff1642 NC |
1362 | /* If the symbol is absolute then the relocation can |
1363 | be resolved during linking and there is no need for | |
1364 | a dynamic reloc. */ | |
1365 | if (sym_section != bfd_abs_section_ptr) | |
1366 | { | |
1367 | /* When creating a shared object, we must copy these | |
1368 | reloc types into the output file. We create a reloc | |
1369 | section in dynobj and make room for this reloc. */ | |
03a12831 AO |
1370 | if (sreloc == NULL) |
1371 | { | |
83bac4b0 NC |
1372 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1373 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
bfff1642 | 1374 | if (sreloc == NULL) |
83bac4b0 | 1375 | goto fail; |
03a12831 | 1376 | } |
03a12831 | 1377 | |
bfff1642 NC |
1378 | sreloc->size += sizeof (Elf32_External_Rela); |
1379 | } | |
03a12831 AO |
1380 | } |
1381 | ||
1382 | break; | |
252b5132 | 1383 | } |
bfff1642 NC |
1384 | |
1385 | if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF) | |
1386 | sym_diff_reloc_seen = FALSE; | |
252b5132 RH |
1387 | } |
1388 | ||
62d7f790 NC |
1389 | result = TRUE; |
1390 | fail: | |
1391 | if (isymbuf != NULL) | |
1392 | free (isymbuf); | |
1393 | ||
1394 | return result; | |
252b5132 RH |
1395 | } |
1396 | ||
1397 | /* Return the section that should be marked against GC for a given | |
1398 | relocation. */ | |
1399 | ||
1400 | static asection * | |
07adf181 AM |
1401 | mn10300_elf_gc_mark_hook (asection *sec, |
1402 | struct bfd_link_info *info, | |
1403 | Elf_Internal_Rela *rel, | |
1404 | struct elf_link_hash_entry *h, | |
1405 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1406 | { |
1407 | if (h != NULL) | |
07adf181 AM |
1408 | switch (ELF32_R_TYPE (rel->r_info)) |
1409 | { | |
1410 | case R_MN10300_GNU_VTINHERIT: | |
1411 | case R_MN10300_GNU_VTENTRY: | |
1412 | return NULL; | |
1413 | } | |
1414 | ||
1415 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1416 | } |
1417 | ||
1418 | /* Perform a relocation as part of a final link. */ | |
603b7257 | 1419 | |
252b5132 | 1420 | static bfd_reloc_status_type |
603b7257 NC |
1421 | mn10300_elf_final_link_relocate (reloc_howto_type *howto, |
1422 | bfd *input_bfd, | |
1423 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
1424 | asection *input_section, | |
1425 | bfd_byte *contents, | |
1426 | bfd_vma offset, | |
1427 | bfd_vma value, | |
1428 | bfd_vma addend, | |
1429 | struct elf_link_hash_entry * h, | |
1430 | unsigned long symndx, | |
1431 | struct bfd_link_info *info, | |
1432 | asection *sym_sec ATTRIBUTE_UNUSED, | |
1433 | int is_local ATTRIBUTE_UNUSED) | |
252b5132 | 1434 | { |
0a22ae8e | 1435 | struct elf32_mn10300_link_hash_table * htab = elf32_mn10300_hash_table (info); |
bfff1642 NC |
1436 | static asection * sym_diff_section; |
1437 | static bfd_vma sym_diff_value; | |
1438 | bfd_boolean is_sym_diff_reloc; | |
252b5132 | 1439 | unsigned long r_type = howto->type; |
603b7257 | 1440 | bfd_byte * hit_data = contents + offset; |
03a12831 | 1441 | bfd * dynobj; |
03a12831 AO |
1442 | asection * sgot; |
1443 | asection * splt; | |
1444 | asection * sreloc; | |
1445 | ||
1446 | dynobj = elf_hash_table (info)->dynobj; | |
03a12831 AO |
1447 | sgot = NULL; |
1448 | splt = NULL; | |
1449 | sreloc = NULL; | |
252b5132 | 1450 | |
146ccdbb AO |
1451 | switch (r_type) |
1452 | { | |
1453 | case R_MN10300_24: | |
1454 | case R_MN10300_16: | |
1455 | case R_MN10300_8: | |
1456 | case R_MN10300_PCREL8: | |
1457 | case R_MN10300_PCREL16: | |
1458 | case R_MN10300_PCREL32: | |
1459 | case R_MN10300_GOTOFF32: | |
1460 | case R_MN10300_GOTOFF24: | |
1461 | case R_MN10300_GOTOFF16: | |
1462 | if (info->shared | |
1463 | && (input_section->flags & SEC_ALLOC) != 0 | |
1464 | && h != NULL | |
7e2294f9 | 1465 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
146ccdbb | 1466 | return bfd_reloc_dangerous; |
0a22ae8e NC |
1467 | case R_MN10300_GOT32: |
1468 | /* Issue 2052223: | |
1469 | Taking the address of a protected function in a shared library | |
1470 | is illegal. Issue an error message here. */ | |
1471 | if (info->shared | |
1472 | && (input_section->flags & SEC_ALLOC) != 0 | |
1473 | && h != NULL | |
1474 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED | |
1475 | && (h->type == STT_FUNC || h->type == STT_GNU_IFUNC) | |
1476 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) | |
1477 | return bfd_reloc_dangerous; | |
146ccdbb AO |
1478 | } |
1479 | ||
bfff1642 NC |
1480 | is_sym_diff_reloc = FALSE; |
1481 | if (sym_diff_section != NULL) | |
1482 | { | |
1483 | BFD_ASSERT (sym_diff_section == input_section); | |
1484 | ||
1485 | switch (r_type) | |
1486 | { | |
1487 | case R_MN10300_32: | |
1488 | case R_MN10300_24: | |
1489 | case R_MN10300_16: | |
1490 | case R_MN10300_8: | |
1491 | value -= sym_diff_value; | |
b5f5fd96 NC |
1492 | /* If we are computing a 32-bit value for the location lists |
1493 | and the result is 0 then we add one to the value. A zero | |
1494 | value can result because of linker relaxation deleteing | |
1495 | prologue instructions and using a value of 1 (for the begin | |
1496 | and end offsets in the location list entry) results in a | |
1497 | nul entry which does not prevent the following entries from | |
1498 | being parsed. */ | |
1499 | if (r_type == R_MN10300_32 | |
1500 | && value == 0 | |
1501 | && strcmp (input_section->name, ".debug_loc") == 0) | |
1502 | value = 1; | |
bfff1642 NC |
1503 | sym_diff_section = NULL; |
1504 | is_sym_diff_reloc = TRUE; | |
1505 | break; | |
1506 | ||
1507 | default: | |
1508 | sym_diff_section = NULL; | |
1509 | break; | |
1510 | } | |
1511 | } | |
1512 | ||
252b5132 RH |
1513 | switch (r_type) |
1514 | { | |
bfff1642 NC |
1515 | case R_MN10300_SYM_DIFF: |
1516 | BFD_ASSERT (addend == 0); | |
1517 | /* Cache the input section and value. | |
1518 | The offset is unreliable, since relaxation may | |
1519 | have reduced the following reloc's offset. */ | |
1520 | sym_diff_section = input_section; | |
1521 | sym_diff_value = value; | |
1522 | return bfd_reloc_ok; | |
1523 | ||
569006e5 | 1524 | case R_MN10300_ALIGN: |
252b5132 RH |
1525 | case R_MN10300_NONE: |
1526 | return bfd_reloc_ok; | |
1527 | ||
1528 | case R_MN10300_32: | |
03a12831 | 1529 | if (info->shared |
bfff1642 NC |
1530 | /* Do not generate relocs when an R_MN10300_32 has been used |
1531 | with an R_MN10300_SYM_DIFF to compute a difference of two | |
1532 | symbols. */ | |
1533 | && is_sym_diff_reloc == FALSE | |
1534 | /* Also, do not generate a reloc when the symbol associated | |
1535 | with the R_MN10300_32 reloc is absolute - there is no | |
1536 | need for a run time computation in this case. */ | |
1537 | && sym_sec != bfd_abs_section_ptr | |
1538 | /* If the section is not going to be allocated at load time | |
1539 | then there is no need to generate relocs for it. */ | |
03a12831 AO |
1540 | && (input_section->flags & SEC_ALLOC) != 0) |
1541 | { | |
1542 | Elf_Internal_Rela outrel; | |
1543 | bfd_boolean skip, relocate; | |
1544 | ||
1545 | /* When generating a shared object, these relocations are | |
1546 | copied into the output file to be resolved at run | |
1547 | time. */ | |
1548 | if (sreloc == NULL) | |
1549 | { | |
83bac4b0 NC |
1550 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1551 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1552 | if (sreloc == NULL) | |
03a12831 | 1553 | return FALSE; |
03a12831 AO |
1554 | } |
1555 | ||
1556 | skip = FALSE; | |
1557 | ||
eea6121a AM |
1558 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1559 | input_section, offset); | |
1560 | if (outrel.r_offset == (bfd_vma) -1) | |
1561 | skip = TRUE; | |
03a12831 AO |
1562 | |
1563 | outrel.r_offset += (input_section->output_section->vma | |
1564 | + input_section->output_offset); | |
1565 | ||
1566 | if (skip) | |
1567 | { | |
1568 | memset (&outrel, 0, sizeof outrel); | |
1569 | relocate = FALSE; | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | /* h->dynindx may be -1 if this symbol was marked to | |
1574 | become local. */ | |
1575 | if (h == NULL | |
7e2294f9 | 1576 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1577 | { |
1578 | relocate = TRUE; | |
1579 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1580 | outrel.r_addend = value + addend; | |
1581 | } | |
1582 | else | |
1583 | { | |
1584 | BFD_ASSERT (h->dynindx != -1); | |
1585 | relocate = FALSE; | |
1586 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1587 | outrel.r_addend = value + addend; | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1592 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1593 | + sreloc->reloc_count)); | |
03a12831 AO |
1594 | ++sreloc->reloc_count; |
1595 | ||
1596 | /* If this reloc is against an external symbol, we do | |
1597 | not want to fiddle with the addend. Otherwise, we | |
1598 | need to include the symbol value so that it becomes | |
1599 | an addend for the dynamic reloc. */ | |
1600 | if (! relocate) | |
1601 | return bfd_reloc_ok; | |
1602 | } | |
252b5132 RH |
1603 | value += addend; |
1604 | bfd_put_32 (input_bfd, value, hit_data); | |
1605 | return bfd_reloc_ok; | |
1606 | ||
1607 | case R_MN10300_24: | |
1608 | value += addend; | |
1609 | ||
010ac81f | 1610 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1611 | return bfd_reloc_overflow; |
1612 | ||
1613 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1614 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1615 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1616 | return bfd_reloc_ok; | |
1617 | ||
1618 | case R_MN10300_16: | |
1619 | value += addend; | |
1620 | ||
010ac81f | 1621 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1622 | return bfd_reloc_overflow; |
1623 | ||
1624 | bfd_put_16 (input_bfd, value, hit_data); | |
1625 | return bfd_reloc_ok; | |
1626 | ||
1627 | case R_MN10300_8: | |
1628 | value += addend; | |
1629 | ||
010ac81f | 1630 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1631 | return bfd_reloc_overflow; |
1632 | ||
1633 | bfd_put_8 (input_bfd, value, hit_data); | |
1634 | return bfd_reloc_ok; | |
1635 | ||
1636 | case R_MN10300_PCREL8: | |
1637 | value -= (input_section->output_section->vma | |
1638 | + input_section->output_offset); | |
1639 | value -= offset; | |
1640 | value += addend; | |
1641 | ||
605d18d4 | 1642 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1643 | return bfd_reloc_overflow; |
1644 | ||
1645 | bfd_put_8 (input_bfd, value, hit_data); | |
1646 | return bfd_reloc_ok; | |
1647 | ||
1648 | case R_MN10300_PCREL16: | |
1649 | value -= (input_section->output_section->vma | |
1650 | + input_section->output_offset); | |
1651 | value -= offset; | |
1652 | value += addend; | |
1653 | ||
605d18d4 | 1654 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1655 | return bfd_reloc_overflow; |
1656 | ||
1657 | bfd_put_16 (input_bfd, value, hit_data); | |
1658 | return bfd_reloc_ok; | |
1659 | ||
1660 | case R_MN10300_PCREL32: | |
1661 | value -= (input_section->output_section->vma | |
1662 | + input_section->output_offset); | |
1663 | value -= offset; | |
1664 | value += addend; | |
1665 | ||
1666 | bfd_put_32 (input_bfd, value, hit_data); | |
1667 | return bfd_reloc_ok; | |
1668 | ||
1669 | case R_MN10300_GNU_VTINHERIT: | |
1670 | case R_MN10300_GNU_VTENTRY: | |
1671 | return bfd_reloc_ok; | |
1672 | ||
03a12831 | 1673 | case R_MN10300_GOTPC32: |
0a22ae8e NC |
1674 | if (dynobj == NULL) |
1675 | return bfd_reloc_dangerous; | |
1676 | ||
03a12831 | 1677 | /* Use global offset table as symbol value. */ |
3d4d4302 | 1678 | value = htab->root.sgot->output_section->vma; |
03a12831 AO |
1679 | value -= (input_section->output_section->vma |
1680 | + input_section->output_offset); | |
1681 | value -= offset; | |
1682 | value += addend; | |
1683 | ||
1684 | bfd_put_32 (input_bfd, value, hit_data); | |
1685 | return bfd_reloc_ok; | |
3b36f7e6 | 1686 | |
03a12831 | 1687 | case R_MN10300_GOTPC16: |
0a22ae8e NC |
1688 | if (dynobj == NULL) |
1689 | return bfd_reloc_dangerous; | |
1690 | ||
03a12831 | 1691 | /* Use global offset table as symbol value. */ |
3d4d4302 | 1692 | value = htab->root.sgot->output_section->vma; |
03a12831 AO |
1693 | value -= (input_section->output_section->vma |
1694 | + input_section->output_offset); | |
1695 | value -= offset; | |
1696 | value += addend; | |
1697 | ||
605d18d4 | 1698 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1699 | return bfd_reloc_overflow; |
1700 | ||
1701 | bfd_put_16 (input_bfd, value, hit_data); | |
1702 | return bfd_reloc_ok; | |
1703 | ||
1704 | case R_MN10300_GOTOFF32: | |
0a22ae8e NC |
1705 | if (dynobj == NULL) |
1706 | return bfd_reloc_dangerous; | |
1707 | ||
3d4d4302 | 1708 | value -= htab->root.sgot->output_section->vma; |
03a12831 | 1709 | value += addend; |
3b36f7e6 | 1710 | |
03a12831 AO |
1711 | bfd_put_32 (input_bfd, value, hit_data); |
1712 | return bfd_reloc_ok; | |
1713 | ||
1714 | case R_MN10300_GOTOFF24: | |
0a22ae8e NC |
1715 | if (dynobj == NULL) |
1716 | return bfd_reloc_dangerous; | |
1717 | ||
3d4d4302 | 1718 | value -= htab->root.sgot->output_section->vma; |
03a12831 | 1719 | value += addend; |
3b36f7e6 | 1720 | |
03a12831 AO |
1721 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1722 | return bfd_reloc_overflow; | |
1723 | ||
1724 | bfd_put_8 (input_bfd, value, hit_data); | |
1725 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1726 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1727 | return bfd_reloc_ok; | |
1728 | ||
1729 | case R_MN10300_GOTOFF16: | |
0a22ae8e NC |
1730 | if (dynobj == NULL) |
1731 | return bfd_reloc_dangerous; | |
1732 | ||
3d4d4302 | 1733 | value -= htab->root.sgot->output_section->vma; |
03a12831 | 1734 | value += addend; |
3b36f7e6 | 1735 | |
605d18d4 | 1736 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1737 | return bfd_reloc_overflow; |
1738 | ||
1739 | bfd_put_16 (input_bfd, value, hit_data); | |
1740 | return bfd_reloc_ok; | |
1741 | ||
1742 | case R_MN10300_PLT32: | |
1743 | if (h != NULL | |
1744 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1745 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1746 | && h->plt.offset != (bfd_vma) -1) | |
1747 | { | |
0a22ae8e NC |
1748 | if (dynobj == NULL) |
1749 | return bfd_reloc_dangerous; | |
1750 | ||
3d4d4302 | 1751 | splt = htab->root.splt; |
03a12831 AO |
1752 | value = (splt->output_section->vma |
1753 | + splt->output_offset | |
1754 | + h->plt.offset) - value; | |
1755 | } | |
1756 | ||
1757 | value -= (input_section->output_section->vma | |
1758 | + input_section->output_offset); | |
1759 | value -= offset; | |
1760 | value += addend; | |
1761 | ||
1762 | bfd_put_32 (input_bfd, value, hit_data); | |
1763 | return bfd_reloc_ok; | |
1764 | ||
1765 | case R_MN10300_PLT16: | |
1766 | if (h != NULL | |
1767 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1768 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1769 | && h->plt.offset != (bfd_vma) -1) | |
1770 | { | |
0a22ae8e NC |
1771 | if (dynobj == NULL) |
1772 | return bfd_reloc_dangerous; | |
1773 | ||
3d4d4302 | 1774 | splt = htab->root.splt; |
03a12831 AO |
1775 | value = (splt->output_section->vma |
1776 | + splt->output_offset | |
1777 | + h->plt.offset) - value; | |
1778 | } | |
1779 | ||
1780 | value -= (input_section->output_section->vma | |
1781 | + input_section->output_offset); | |
1782 | value -= offset; | |
1783 | value += addend; | |
1784 | ||
605d18d4 | 1785 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1786 | return bfd_reloc_overflow; |
1787 | ||
1788 | bfd_put_16 (input_bfd, value, hit_data); | |
1789 | return bfd_reloc_ok; | |
1790 | ||
0a22ae8e NC |
1791 | case R_MN10300_TLS_LDO: |
1792 | value = dtpoff (info, value); | |
1793 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
1794 | return bfd_reloc_ok; | |
1795 | ||
1796 | case R_MN10300_TLS_LE: | |
1797 | value = tpoff (info, value); | |
1798 | bfd_put_32 (input_bfd, value + addend, hit_data); | |
1799 | return bfd_reloc_ok; | |
1800 | ||
1801 | case R_MN10300_TLS_LD: | |
1802 | if (dynobj == NULL) | |
1803 | return bfd_reloc_dangerous; | |
1804 | ||
3d4d4302 | 1805 | sgot = htab->root.sgot; |
0a22ae8e NC |
1806 | BFD_ASSERT (sgot != NULL); |
1807 | value = htab->tls_ldm_got.offset + sgot->output_offset; | |
1808 | bfd_put_32 (input_bfd, value, hit_data); | |
1809 | ||
1810 | if (!htab->tls_ldm_got.rel_emitted) | |
1811 | { | |
3d4d4302 | 1812 | asection * srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
0a22ae8e NC |
1813 | Elf_Internal_Rela rel; |
1814 | ||
1815 | BFD_ASSERT (srelgot != NULL); | |
1816 | htab->tls_ldm_got.rel_emitted ++; | |
1817 | rel.r_offset = (sgot->output_section->vma | |
1818 | + sgot->output_offset | |
1819 | + htab->tls_ldm_got.offset); | |
1820 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + htab->tls_ldm_got.offset); | |
1821 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + htab->tls_ldm_got.offset+4); | |
1822 | rel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD); | |
1823 | rel.r_addend = 0; | |
1824 | bfd_elf32_swap_reloca_out (output_bfd, & rel, | |
1825 | (bfd_byte *) ((Elf32_External_Rela *) srelgot->contents | |
1826 | + srelgot->reloc_count)); | |
1827 | ++ srelgot->reloc_count; | |
1828 | } | |
1829 | ||
1830 | return bfd_reloc_ok; | |
1831 | ||
1832 | case R_MN10300_TLS_GOTIE: | |
1833 | value = tpoff (info, value); | |
1834 | /* Fall Through. */ | |
1835 | ||
1836 | case R_MN10300_TLS_GD: | |
1837 | case R_MN10300_TLS_IE: | |
03a12831 AO |
1838 | case R_MN10300_GOT32: |
1839 | case R_MN10300_GOT24: | |
1840 | case R_MN10300_GOT16: | |
0a22ae8e NC |
1841 | if (dynobj == NULL) |
1842 | return bfd_reloc_dangerous; | |
3b36f7e6 | 1843 | |
3d4d4302 | 1844 | sgot = htab->root.sgot; |
0a22ae8e NC |
1845 | if (r_type == R_MN10300_TLS_GD) |
1846 | value = dtpoff (info, value); | |
03a12831 | 1847 | |
0a22ae8e NC |
1848 | if (h != NULL) |
1849 | { | |
1850 | bfd_vma off; | |
1851 | ||
1852 | off = h->got.offset; | |
1853 | /* Offsets in the GOT are allocated in check_relocs | |
1854 | which is not called for shared libraries... */ | |
1855 | if (off == (bfd_vma) -1) | |
1856 | off = 0; | |
1857 | ||
1858 | if (sgot->contents != NULL | |
1859 | && (! elf_hash_table (info)->dynamic_sections_created | |
1860 | || SYMBOL_REFERENCES_LOCAL (info, h))) | |
1861 | /* This is actually a static link, or it is a | |
1862 | -Bsymbolic link and the symbol is defined | |
1863 | locally, or the symbol was forced to be local | |
1864 | because of a version file. We must initialize | |
1865 | this entry in the global offset table. | |
1866 | ||
1867 | When doing a dynamic link, we create a .rela.got | |
1868 | relocation entry to initialize the value. This | |
1869 | is done in the finish_dynamic_symbol routine. */ | |
1870 | bfd_put_32 (output_bfd, value, | |
1871 | sgot->contents + off); | |
1872 | ||
1873 | value = sgot->output_offset + off; | |
1874 | } | |
1875 | else | |
1876 | { | |
1877 | bfd_vma off; | |
03a12831 | 1878 | |
0a22ae8e | 1879 | off = elf_local_got_offsets (input_bfd)[symndx]; |
03a12831 | 1880 | |
0a22ae8e NC |
1881 | if (off & 1) |
1882 | bfd_put_32 (output_bfd, value, sgot->contents + (off & ~ 1)); | |
1883 | else | |
1884 | { | |
03a12831 AO |
1885 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
1886 | ||
1887 | if (info->shared) | |
1888 | { | |
1889 | asection * srelgot; | |
1890 | Elf_Internal_Rela outrel; | |
1891 | ||
3d4d4302 | 1892 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
03a12831 AO |
1893 | BFD_ASSERT (srelgot != NULL); |
1894 | ||
1895 | outrel.r_offset = (sgot->output_section->vma | |
1896 | + sgot->output_offset | |
1897 | + off); | |
0a22ae8e NC |
1898 | switch (r_type) |
1899 | { | |
1900 | case R_MN10300_TLS_GD: | |
1901 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPOFF); | |
1902 | outrel.r_offset = (sgot->output_section->vma | |
1903 | + sgot->output_offset | |
1904 | + off + 4); | |
1905 | bfd_elf32_swap_reloca_out (output_bfd, & outrel, | |
1906 | (bfd_byte *) (((Elf32_External_Rela *) | |
1907 | srelgot->contents) | |
1908 | + srelgot->reloc_count)); | |
1909 | ++ srelgot->reloc_count; | |
1910 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD); | |
1911 | break; | |
1912 | case R_MN10300_TLS_GOTIE: | |
1913 | case R_MN10300_TLS_IE: | |
1914 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_TPOFF); | |
1915 | break; | |
1916 | default: | |
1917 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1918 | break; | |
1919 | } | |
1920 | ||
03a12831 AO |
1921 | outrel.r_addend = value; |
1922 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1923 | (bfd_byte *) (((Elf32_External_Rela *) |
1924 | srelgot->contents) | |
1925 | + srelgot->reloc_count)); | |
03a12831 | 1926 | ++ srelgot->reloc_count; |
0a22ae8e | 1927 | elf_local_got_offsets (input_bfd)[symndx] |= 1; |
03a12831 AO |
1928 | } |
1929 | ||
0a22ae8e | 1930 | value = sgot->output_offset + (off & ~(bfd_vma) 1); |
03a12831 | 1931 | } |
0a22ae8e | 1932 | } |
03a12831 AO |
1933 | |
1934 | value += addend; | |
1935 | ||
0a22ae8e NC |
1936 | if (r_type == R_MN10300_TLS_IE) |
1937 | { | |
1938 | value += sgot->output_section->vma; | |
1939 | bfd_put_32 (input_bfd, value, hit_data); | |
1940 | return bfd_reloc_ok; | |
1941 | } | |
1942 | else if (r_type == R_MN10300_TLS_GOTIE | |
1943 | || r_type == R_MN10300_TLS_GD | |
1944 | || r_type == R_MN10300_TLS_LD) | |
1945 | { | |
1946 | bfd_put_32 (input_bfd, value, hit_data); | |
1947 | return bfd_reloc_ok; | |
1948 | } | |
1949 | else if (r_type == R_MN10300_GOT32) | |
03a12831 AO |
1950 | { |
1951 | bfd_put_32 (input_bfd, value, hit_data); | |
1952 | return bfd_reloc_ok; | |
1953 | } | |
1954 | else if (r_type == R_MN10300_GOT24) | |
1955 | { | |
1956 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1957 | return bfd_reloc_overflow; | |
1958 | ||
1959 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1960 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1961 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1962 | return bfd_reloc_ok; | |
1963 | } | |
1964 | else if (r_type == R_MN10300_GOT16) | |
1965 | { | |
605d18d4 | 1966 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1967 | return bfd_reloc_overflow; |
1968 | ||
1969 | bfd_put_16 (input_bfd, value, hit_data); | |
1970 | return bfd_reloc_ok; | |
1971 | } | |
1972 | /* Fall through. */ | |
3b36f7e6 | 1973 | |
252b5132 RH |
1974 | default: |
1975 | return bfd_reloc_notsupported; | |
1976 | } | |
1977 | } | |
252b5132 RH |
1978 | \f |
1979 | /* Relocate an MN10300 ELF section. */ | |
603b7257 | 1980 | |
b34976b6 | 1981 | static bfd_boolean |
603b7257 NC |
1982 | mn10300_elf_relocate_section (bfd *output_bfd, |
1983 | struct bfd_link_info *info, | |
1984 | bfd *input_bfd, | |
1985 | asection *input_section, | |
1986 | bfd_byte *contents, | |
1987 | Elf_Internal_Rela *relocs, | |
1988 | Elf_Internal_Sym *local_syms, | |
1989 | asection **local_sections) | |
252b5132 RH |
1990 | { |
1991 | Elf_Internal_Shdr *symtab_hdr; | |
b2a8e766 | 1992 | struct elf_link_hash_entry **sym_hashes; |
252b5132 | 1993 | Elf_Internal_Rela *rel, *relend; |
0a22ae8e | 1994 | Elf_Internal_Rela * trel; |
252b5132 RH |
1995 | |
1996 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
b2a8e766 | 1997 | sym_hashes = elf_sym_hashes (input_bfd); |
252b5132 RH |
1998 | |
1999 | rel = relocs; | |
2000 | relend = relocs + input_section->reloc_count; | |
2001 | for (; rel < relend; rel++) | |
2002 | { | |
2003 | int r_type; | |
2004 | reloc_howto_type *howto; | |
2005 | unsigned long r_symndx; | |
2006 | Elf_Internal_Sym *sym; | |
2007 | asection *sec; | |
2008 | struct elf32_mn10300_link_hash_entry *h; | |
2009 | bfd_vma relocation; | |
2010 | bfd_reloc_status_type r; | |
0a22ae8e NC |
2011 | int tls_r_type; |
2012 | bfd_boolean unresolved_reloc = FALSE; | |
62d887d4 | 2013 | bfd_boolean warned, ignored; |
0a22ae8e | 2014 | struct elf_link_hash_entry * hh; |
252b5132 | 2015 | |
0a22ae8e | 2016 | relocation = 0; |
252b5132 RH |
2017 | r_symndx = ELF32_R_SYM (rel->r_info); |
2018 | r_type = ELF32_R_TYPE (rel->r_info); | |
2019 | howto = elf_mn10300_howto_table + r_type; | |
2020 | ||
2021 | /* Just skip the vtable gc relocs. */ | |
2022 | if (r_type == R_MN10300_GNU_VTINHERIT | |
2023 | || r_type == R_MN10300_GNU_VTENTRY) | |
2024 | continue; | |
2025 | ||
252b5132 RH |
2026 | h = NULL; |
2027 | sym = NULL; | |
2028 | sec = NULL; | |
2029 | if (r_symndx < symtab_hdr->sh_info) | |
0a22ae8e | 2030 | hh = NULL; |
252b5132 RH |
2031 | else |
2032 | { | |
b2a8e766 AM |
2033 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2034 | r_symndx, symtab_hdr, sym_hashes, | |
2035 | hh, sec, relocation, | |
62d887d4 | 2036 | unresolved_reloc, warned, ignored); |
0a22ae8e NC |
2037 | } |
2038 | h = elf_mn10300_hash_entry (hh); | |
560e09e9 | 2039 | |
0a22ae8e NC |
2040 | tls_r_type = elf_mn10300_tls_transition (info, r_type, hh, input_section, 0); |
2041 | if (tls_r_type != r_type) | |
2042 | { | |
2043 | bfd_boolean had_plt; | |
2044 | ||
2045 | had_plt = mn10300_do_tls_transition (input_bfd, r_type, tls_r_type, | |
2046 | contents, rel->r_offset); | |
2047 | r_type = tls_r_type; | |
2048 | howto = elf_mn10300_howto_table + r_type; | |
2049 | ||
2050 | if (had_plt) | |
2051 | for (trel = rel+1; trel < relend; trel++) | |
2052 | if ((ELF32_R_TYPE (trel->r_info) == R_MN10300_PLT32 | |
2053 | || ELF32_R_TYPE (trel->r_info) == R_MN10300_PCREL32) | |
2054 | && rel->r_offset + had_plt == trel->r_offset) | |
2055 | trel->r_info = ELF32_R_INFO (0, R_MN10300_NONE); | |
2056 | } | |
560e09e9 | 2057 | |
0a22ae8e NC |
2058 | if (r_symndx < symtab_hdr->sh_info) |
2059 | { | |
2060 | sym = local_syms + r_symndx; | |
2061 | sec = local_sections[r_symndx]; | |
2062 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2063 | } | |
2064 | else | |
2065 | { | |
560e09e9 | 2066 | if ((h->root.root.type == bfd_link_hash_defined |
252b5132 | 2067 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 2068 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
2069 | || r_type == R_MN10300_GOTPC16 |
2070 | || (( r_type == R_MN10300_PLT32 | |
2071 | || r_type == R_MN10300_PLT16) | |
2072 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2073 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2074 | && h->root.plt.offset != (bfd_vma) -1) | |
2075 | || (( r_type == R_MN10300_GOT32 | |
2076 | || r_type == R_MN10300_GOT24 | |
0a22ae8e NC |
2077 | || r_type == R_MN10300_TLS_GD |
2078 | || r_type == R_MN10300_TLS_LD | |
2079 | || r_type == R_MN10300_TLS_GOTIE | |
2080 | || r_type == R_MN10300_TLS_IE | |
03a12831 AO |
2081 | || r_type == R_MN10300_GOT16) |
2082 | && elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 2083 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
146ccdbb | 2084 | || (r_type == R_MN10300_32 |
bfff1642 NC |
2085 | /* _32 relocs in executables force _COPY relocs, |
2086 | such that the address of the symbol ends up | |
2087 | being local. */ | |
efde2f2c | 2088 | && !info->executable |
7e2294f9 | 2089 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
03a12831 AO |
2090 | && ((input_section->flags & SEC_ALLOC) != 0 |
2091 | /* DWARF will emit R_MN10300_32 relocations | |
2092 | in its sections against symbols defined | |
2093 | externally in shared libraries. We can't | |
2094 | do anything with them here. */ | |
2095 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 2096 | && h->root.def_dynamic))))) |
560e09e9 NC |
2097 | /* In these cases, we don't need the relocation |
2098 | value. We check specially because in some | |
2099 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 2100 | relocation = 0; |
560e09e9 | 2101 | |
1d5316ab AM |
2102 | else if (!info->relocatable && unresolved_reloc |
2103 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
2104 | rel->r_offset) != (bfd_vma) -1) | |
2105 | ||
560e09e9 | 2106 | (*_bfd_error_handler) |
843fe662 L |
2107 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
2108 | input_bfd, | |
2109 | input_section, | |
2110 | (long) rel->r_offset, | |
2111 | howto->name, | |
2112 | h->root.root.root.string); | |
252b5132 RH |
2113 | } |
2114 | ||
dbaa2011 | 2115 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2116 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2117 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
2118 | |
2119 | if (info->relocatable) | |
2120 | continue; | |
2121 | ||
252b5132 RH |
2122 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
2123 | input_section, | |
2124 | contents, rel->r_offset, | |
2125 | relocation, rel->r_addend, | |
603b7257 | 2126 | (struct elf_link_hash_entry *) h, |
03a12831 | 2127 | r_symndx, |
252b5132 RH |
2128 | info, sec, h == NULL); |
2129 | ||
2130 | if (r != bfd_reloc_ok) | |
2131 | { | |
2132 | const char *name; | |
603b7257 | 2133 | const char *msg = NULL; |
252b5132 RH |
2134 | |
2135 | if (h != NULL) | |
2136 | name = h->root.root.root.string; | |
2137 | else | |
2138 | { | |
2139 | name = (bfd_elf_string_from_elf_section | |
2140 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
2141 | if (name == NULL || *name == '\0') | |
2142 | name = bfd_section_name (input_bfd, sec); | |
2143 | } | |
2144 | ||
2145 | switch (r) | |
2146 | { | |
2147 | case bfd_reloc_overflow: | |
2148 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
2149 | (info, (h ? &h->root.root : NULL), name, |
2150 | howto->name, (bfd_vma) 0, input_bfd, | |
2151 | input_section, rel->r_offset))) | |
b34976b6 | 2152 | return FALSE; |
252b5132 RH |
2153 | break; |
2154 | ||
2155 | case bfd_reloc_undefined: | |
2156 | if (! ((*info->callbacks->undefined_symbol) | |
2157 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
2158 | rel->r_offset, TRUE))) |
2159 | return FALSE; | |
252b5132 RH |
2160 | break; |
2161 | ||
2162 | case bfd_reloc_outofrange: | |
2163 | msg = _("internal error: out of range error"); | |
2164 | goto common_error; | |
2165 | ||
2166 | case bfd_reloc_notsupported: | |
2167 | msg = _("internal error: unsupported relocation error"); | |
2168 | goto common_error; | |
2169 | ||
2170 | case bfd_reloc_dangerous: | |
c9b57b7e DD |
2171 | if (r_type == R_MN10300_PCREL32) |
2172 | msg = _("error: inappropriate relocation type for shared" | |
2173 | " library (did you forget -fpic?)"); | |
0a22ae8e NC |
2174 | else if (r_type == R_MN10300_GOT32) |
2175 | msg = _("%B: taking the address of protected function" | |
2176 | " '%s' cannot be done when making a shared library"); | |
c9b57b7e DD |
2177 | else |
2178 | msg = _("internal error: suspicious relocation type used" | |
2179 | " in shared library"); | |
252b5132 RH |
2180 | goto common_error; |
2181 | ||
2182 | default: | |
2183 | msg = _("internal error: unknown error"); | |
603b7257 | 2184 | /* Fall through. */ |
252b5132 RH |
2185 | |
2186 | common_error: | |
0a22ae8e NC |
2187 | _bfd_error_handler (msg, input_bfd, name); |
2188 | bfd_set_error (bfd_error_bad_value); | |
2189 | return FALSE; | |
252b5132 RH |
2190 | } |
2191 | } | |
2192 | } | |
2193 | ||
b34976b6 | 2194 | return TRUE; |
252b5132 RH |
2195 | } |
2196 | ||
2197 | /* Finish initializing one hash table entry. */ | |
603b7257 | 2198 | |
b34976b6 | 2199 | static bfd_boolean |
603b7257 NC |
2200 | elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry, |
2201 | void * in_args) | |
252b5132 RH |
2202 | { |
2203 | struct elf32_mn10300_link_hash_entry *entry; | |
603b7257 | 2204 | struct bfd_link_info *link_info = (struct bfd_link_info *) in_args; |
252b5132 RH |
2205 | unsigned int byte_count = 0; |
2206 | ||
010ac81f | 2207 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 RH |
2208 | |
2209 | /* If we already know we want to convert "call" to "calls" for calls | |
2210 | to this symbol, then return now. */ | |
2211 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 2212 | return TRUE; |
252b5132 RH |
2213 | |
2214 | /* If there are no named calls to this symbol, or there's nothing we | |
1055df0f AO |
2215 | can move from the function itself into the "call" instruction, |
2216 | then note that all "call" instructions should be converted into | |
2217 | "calls" instructions and return. If a symbol is available for | |
2218 | dynamic symbol resolution (overridable or overriding), avoid | |
2219 | custom calling conventions. */ | |
252b5132 | 2220 | if (entry->direct_calls == 0 |
1055df0f AO |
2221 | || (entry->stack_size == 0 && entry->movm_args == 0) |
2222 | || (elf_hash_table (link_info)->dynamic_sections_created | |
2223 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL | |
2224 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) | |
252b5132 RH |
2225 | { |
2226 | /* Make a note that we should convert "call" instructions to "calls" | |
2227 | instructions for calls to this symbol. */ | |
2228 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 2229 | return TRUE; |
252b5132 RH |
2230 | } |
2231 | ||
2232 | /* We may be able to move some instructions from the function itself into | |
2233 | the "call" instruction. Count how many bytes we might be able to | |
2234 | eliminate in the function itself. */ | |
2235 | ||
2236 | /* A movm instruction is two bytes. */ | |
2237 | if (entry->movm_args) | |
2238 | byte_count += 2; | |
2239 | ||
2240 | /* Count the insn to allocate stack space too. */ | |
1a101a42 AM |
2241 | if (entry->stack_size > 0) |
2242 | { | |
2243 | if (entry->stack_size <= 128) | |
2244 | byte_count += 3; | |
2245 | else | |
2246 | byte_count += 4; | |
2247 | } | |
252b5132 RH |
2248 | |
2249 | /* If using "call" will result in larger code, then turn all | |
4cc11e76 | 2250 | the associated "call" instructions into "calls" instructions. */ |
252b5132 RH |
2251 | if (byte_count < entry->direct_calls) |
2252 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2253 | ||
2254 | /* This routine never fails. */ | |
b34976b6 | 2255 | return TRUE; |
252b5132 RH |
2256 | } |
2257 | ||
eb13e63f | 2258 | /* Used to count hash table entries. */ |
603b7257 | 2259 | |
eb13e63f DD |
2260 | static bfd_boolean |
2261 | elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, | |
603b7257 | 2262 | void * in_args) |
eb13e63f | 2263 | { |
bfff1642 | 2264 | int *count = (int *) in_args; |
eb13e63f DD |
2265 | |
2266 | (*count) ++; | |
2267 | return TRUE; | |
2268 | } | |
2269 | ||
2270 | /* Used to enumerate hash table entries into a linear array. */ | |
603b7257 | 2271 | |
eb13e63f DD |
2272 | static bfd_boolean |
2273 | elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, | |
603b7257 | 2274 | void * in_args) |
eb13e63f DD |
2275 | { |
2276 | struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; | |
2277 | ||
2278 | **ptr = gen_entry; | |
2279 | (*ptr) ++; | |
2280 | return TRUE; | |
2281 | } | |
2282 | ||
2283 | /* Used to sort the array created by the above. */ | |
603b7257 | 2284 | |
eb13e63f DD |
2285 | static int |
2286 | sort_by_value (const void *va, const void *vb) | |
2287 | { | |
2288 | struct elf32_mn10300_link_hash_entry *a | |
bfff1642 | 2289 | = *(struct elf32_mn10300_link_hash_entry **) va; |
eb13e63f | 2290 | struct elf32_mn10300_link_hash_entry *b |
bfff1642 | 2291 | = *(struct elf32_mn10300_link_hash_entry **) vb; |
eb13e63f DD |
2292 | |
2293 | return a->value - b->value; | |
2294 | } | |
2295 | ||
603b7257 NC |
2296 | /* Compute the stack size and movm arguments for the function |
2297 | referred to by HASH at address ADDR in section with | |
2298 | contents CONTENTS, store the information in the hash table. */ | |
2299 | ||
2300 | static void | |
2301 | compute_function_info (bfd *abfd, | |
2302 | struct elf32_mn10300_link_hash_entry *hash, | |
2303 | bfd_vma addr, | |
2304 | unsigned char *contents) | |
2305 | { | |
2306 | unsigned char byte1, byte2; | |
2307 | /* We only care about a very small subset of the possible prologue | |
2308 | sequences here. Basically we look for: | |
2309 | ||
2310 | movm [d2,d3,a2,a3],sp (optional) | |
2311 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
2312 | 8 bit number) | |
2313 | ||
2314 | If we find anything else, we quit. */ | |
2315 | ||
2316 | /* Look for movm [regs],sp. */ | |
2317 | byte1 = bfd_get_8 (abfd, contents + addr); | |
2318 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
2319 | ||
2320 | if (byte1 == 0xcf) | |
2321 | { | |
2322 | hash->movm_args = byte2; | |
2323 | addr += 2; | |
2324 | byte1 = bfd_get_8 (abfd, contents + addr); | |
2325 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
2326 | } | |
2327 | ||
2328 | /* Now figure out how much stack space will be allocated by the movm | |
2329 | instruction. We need this kept separate from the function's normal | |
2330 | stack space. */ | |
2331 | if (hash->movm_args) | |
2332 | { | |
2333 | /* Space for d2. */ | |
2334 | if (hash->movm_args & 0x80) | |
2335 | hash->movm_stack_size += 4; | |
2336 | ||
2337 | /* Space for d3. */ | |
2338 | if (hash->movm_args & 0x40) | |
2339 | hash->movm_stack_size += 4; | |
2340 | ||
2341 | /* Space for a2. */ | |
2342 | if (hash->movm_args & 0x20) | |
2343 | hash->movm_stack_size += 4; | |
2344 | ||
2345 | /* Space for a3. */ | |
2346 | if (hash->movm_args & 0x10) | |
2347 | hash->movm_stack_size += 4; | |
2348 | ||
2349 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
2350 | if (hash->movm_args & 0x08) | |
2351 | hash->movm_stack_size += 8 * 4; | |
2352 | ||
2353 | if (bfd_get_mach (abfd) == bfd_mach_am33 | |
2354 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
2355 | { | |
2356 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
2357 | if (hash->movm_args & 0x1) | |
2358 | hash->movm_stack_size += 6 * 4; | |
2359 | ||
2360 | /* exreg1 space. e4, e5, e6, e7 */ | |
2361 | if (hash->movm_args & 0x2) | |
2362 | hash->movm_stack_size += 4 * 4; | |
2363 | ||
2364 | /* exreg0 space. e2, e3 */ | |
2365 | if (hash->movm_args & 0x4) | |
2366 | hash->movm_stack_size += 2 * 4; | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | /* Now look for the two stack adjustment variants. */ | |
2371 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
2372 | { | |
2373 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
2374 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
2375 | ||
2376 | hash->stack_size = -temp; | |
2377 | } | |
2378 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
2379 | { | |
2380 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
2381 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
2382 | temp = -temp; | |
2383 | ||
2384 | if (temp < 255) | |
2385 | hash->stack_size = temp; | |
2386 | } | |
2387 | ||
2388 | /* If the total stack to be allocated by the call instruction is more | |
2389 | than 255 bytes, then we can't remove the stack adjustment by using | |
2390 | "call" (we might still be able to remove the "movm" instruction. */ | |
2391 | if (hash->stack_size + hash->movm_stack_size > 255) | |
2392 | hash->stack_size = 0; | |
2393 | } | |
2394 | ||
2395 | /* Delete some bytes from a section while relaxing. */ | |
2396 | ||
2397 | static bfd_boolean | |
2398 | mn10300_elf_relax_delete_bytes (bfd *abfd, | |
2399 | asection *sec, | |
2400 | bfd_vma addr, | |
2401 | int count) | |
2402 | { | |
2403 | Elf_Internal_Shdr *symtab_hdr; | |
2404 | unsigned int sec_shndx; | |
2405 | bfd_byte *contents; | |
2406 | Elf_Internal_Rela *irel, *irelend; | |
2407 | Elf_Internal_Rela *irelalign; | |
2408 | bfd_vma toaddr; | |
2409 | Elf_Internal_Sym *isym, *isymend; | |
2410 | struct elf_link_hash_entry **sym_hashes; | |
2411 | struct elf_link_hash_entry **end_hashes; | |
2412 | unsigned int symcount; | |
2413 | ||
2414 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
2415 | ||
2416 | contents = elf_section_data (sec)->this_hdr.contents; | |
2417 | ||
603b7257 NC |
2418 | irelalign = NULL; |
2419 | toaddr = sec->size; | |
2420 | ||
2421 | irel = elf_section_data (sec)->relocs; | |
2422 | irelend = irel + sec->reloc_count; | |
2423 | ||
cf4a529b NC |
2424 | if (sec->reloc_count > 0) |
2425 | { | |
2426 | /* If there is an align reloc at the end of the section ignore it. | |
2427 | GAS creates these relocs for reasons of its own, and they just | |
2428 | serve to keep the section artifically inflated. */ | |
2429 | if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN) | |
2430 | --irelend; | |
68ffbac6 | 2431 | |
cf4a529b | 2432 | /* The deletion must stop at the next ALIGN reloc for an aligment |
b5f5fd96 NC |
2433 | power larger than, or not a multiple of, the number of bytes we |
2434 | are deleting. */ | |
cf4a529b | 2435 | for (; irel < irelend; irel++) |
b5f5fd96 NC |
2436 | { |
2437 | int alignment = 1 << irel->r_addend; | |
2438 | ||
2439 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
2440 | && irel->r_offset > addr | |
2441 | && irel->r_offset < toaddr | |
2442 | && (count < alignment | |
2443 | || alignment % count != 0)) | |
2444 | { | |
2445 | irelalign = irel; | |
2446 | toaddr = irel->r_offset; | |
2447 | break; | |
2448 | } | |
2449 | } | |
cf4a529b | 2450 | } |
569006e5 | 2451 | |
603b7257 NC |
2452 | /* Actually delete the bytes. */ |
2453 | memmove (contents + addr, contents + addr + count, | |
2454 | (size_t) (toaddr - addr - count)); | |
569006e5 NC |
2455 | |
2456 | /* Adjust the section's size if we are shrinking it, or else | |
2457 | pad the bytes between the end of the shrunken region and | |
2458 | the start of the next region with NOP codes. */ | |
2459 | if (irelalign == NULL) | |
2460 | { | |
2461 | sec->size -= count; | |
2462 | /* Include symbols at the end of the section, but | |
2463 | not at the end of a sub-region of the section. */ | |
2464 | toaddr ++; | |
2465 | } | |
2466 | else | |
2467 | { | |
2468 | int i; | |
2469 | ||
2470 | #define NOP_OPCODE 0xcb | |
2471 | ||
2472 | for (i = 0; i < count; i ++) | |
2473 | bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); | |
2474 | } | |
603b7257 NC |
2475 | |
2476 | /* Adjust all the relocs. */ | |
2477 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
2478 | { | |
2479 | /* Get the new reloc address. */ | |
2480 | if ((irel->r_offset > addr | |
b5f5fd96 NC |
2481 | && irel->r_offset < toaddr) |
2482 | || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
2483 | && irel->r_offset == toaddr)) | |
603b7257 NC |
2484 | irel->r_offset -= count; |
2485 | } | |
2486 | ||
b5f5fd96 NC |
2487 | /* Adjust the local symbols in the section, reducing their value |
2488 | by the number of bytes deleted. Note - symbols within the deleted | |
2489 | region are moved to the address of the start of the region, which | |
2490 | actually means that they will address the byte beyond the end of | |
2491 | the region once the deletion has been completed. */ | |
603b7257 NC |
2492 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2493 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2494 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2495 | { | |
2496 | if (isym->st_shndx == sec_shndx | |
2497 | && isym->st_value > addr | |
569006e5 | 2498 | && isym->st_value < toaddr) |
b5f5fd96 NC |
2499 | { |
2500 | if (isym->st_value < addr + count) | |
2501 | isym->st_value = addr; | |
2502 | else | |
2503 | isym->st_value -= count; | |
2504 | } | |
bfff1642 NC |
2505 | /* Adjust the function symbol's size as well. */ |
2506 | else if (isym->st_shndx == sec_shndx | |
2507 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC | |
2508 | && isym->st_value + isym->st_size > addr | |
569006e5 | 2509 | && isym->st_value + isym->st_size < toaddr) |
bfff1642 | 2510 | isym->st_size -= count; |
603b7257 NC |
2511 | } |
2512 | ||
2513 | /* Now adjust the global symbols defined in this section. */ | |
2514 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2515 | - symtab_hdr->sh_info); | |
2516 | sym_hashes = elf_sym_hashes (abfd); | |
2517 | end_hashes = sym_hashes + symcount; | |
2518 | for (; sym_hashes < end_hashes; sym_hashes++) | |
2519 | { | |
2520 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
2521 | ||
2522 | if ((sym_hash->root.type == bfd_link_hash_defined | |
2523 | || sym_hash->root.type == bfd_link_hash_defweak) | |
2524 | && sym_hash->root.u.def.section == sec | |
2525 | && sym_hash->root.u.def.value > addr | |
569006e5 | 2526 | && sym_hash->root.u.def.value < toaddr) |
b5f5fd96 NC |
2527 | { |
2528 | if (sym_hash->root.u.def.value < addr + count) | |
2529 | sym_hash->root.u.def.value = addr; | |
2530 | else | |
2531 | sym_hash->root.u.def.value -= count; | |
2532 | } | |
bfff1642 NC |
2533 | /* Adjust the function symbol's size as well. */ |
2534 | else if (sym_hash->root.type == bfd_link_hash_defined | |
2535 | && sym_hash->root.u.def.section == sec | |
2536 | && sym_hash->type == STT_FUNC | |
2537 | && sym_hash->root.u.def.value + sym_hash->size > addr | |
569006e5 | 2538 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) |
bfff1642 | 2539 | sym_hash->size -= count; |
603b7257 NC |
2540 | } |
2541 | ||
b5f5fd96 NC |
2542 | /* See if we can move the ALIGN reloc forward. |
2543 | We have adjusted r_offset for it already. */ | |
2544 | if (irelalign != NULL) | |
2545 | { | |
2546 | bfd_vma alignto, alignaddr; | |
2547 | ||
2548 | if ((int) irelalign->r_addend > 0) | |
2549 | { | |
2550 | /* This is the old address. */ | |
2551 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); | |
2552 | /* This is where the align points to now. */ | |
2553 | alignaddr = BFD_ALIGN (irelalign->r_offset, | |
2554 | 1 << irelalign->r_addend); | |
2555 | if (alignaddr < alignto) | |
2556 | /* Tail recursion. */ | |
2557 | return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr, | |
2558 | (int) (alignto - alignaddr)); | |
2559 | } | |
2560 | } | |
2561 | ||
603b7257 NC |
2562 | return TRUE; |
2563 | } | |
2564 | ||
2565 | /* Return TRUE if a symbol exists at the given address, else return | |
2566 | FALSE. */ | |
2567 | ||
2568 | static bfd_boolean | |
2569 | mn10300_elf_symbol_address_p (bfd *abfd, | |
2570 | asection *sec, | |
2571 | Elf_Internal_Sym *isym, | |
2572 | bfd_vma addr) | |
2573 | { | |
2574 | Elf_Internal_Shdr *symtab_hdr; | |
2575 | unsigned int sec_shndx; | |
2576 | Elf_Internal_Sym *isymend; | |
2577 | struct elf_link_hash_entry **sym_hashes; | |
2578 | struct elf_link_hash_entry **end_hashes; | |
2579 | unsigned int symcount; | |
2580 | ||
2581 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
2582 | ||
2583 | /* Examine all the symbols. */ | |
2584 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2585 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2586 | if (isym->st_shndx == sec_shndx | |
2587 | && isym->st_value == addr) | |
2588 | return TRUE; | |
2589 | ||
2590 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2591 | - symtab_hdr->sh_info); | |
2592 | sym_hashes = elf_sym_hashes (abfd); | |
2593 | end_hashes = sym_hashes + symcount; | |
2594 | for (; sym_hashes < end_hashes; sym_hashes++) | |
2595 | { | |
2596 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
2597 | ||
2598 | if ((sym_hash->root.type == bfd_link_hash_defined | |
2599 | || sym_hash->root.type == bfd_link_hash_defweak) | |
2600 | && sym_hash->root.u.def.section == sec | |
2601 | && sym_hash->root.u.def.value == addr) | |
2602 | return TRUE; | |
2603 | } | |
2604 | ||
2605 | return FALSE; | |
2606 | } | |
eb13e63f | 2607 | |
252b5132 RH |
2608 | /* This function handles relaxing for the mn10300. |
2609 | ||
4cc11e76 | 2610 | There are quite a few relaxing opportunities available on the mn10300: |
252b5132 RH |
2611 | |
2612 | * calls:32 -> calls:16 2 bytes | |
2613 | * call:32 -> call:16 2 bytes | |
2614 | ||
2615 | * call:32 -> calls:32 1 byte | |
2616 | * call:16 -> calls:16 1 byte | |
2617 | * These are done anytime using "calls" would result | |
2618 | in smaller code, or when necessary to preserve the | |
2619 | meaning of the program. | |
2620 | ||
2621 | * call:32 varies | |
2622 | * call:16 | |
2623 | * In some circumstances we can move instructions | |
2624 | from a function prologue into a "call" instruction. | |
2625 | This is only done if the resulting code is no larger | |
2626 | than the original code. | |
2627 | ||
252b5132 RH |
2628 | * jmp:32 -> jmp:16 2 bytes |
2629 | * jmp:16 -> bra:8 1 byte | |
2630 | ||
2631 | * If the previous instruction is a conditional branch | |
2632 | around the jump/bra, we may be able to reverse its condition | |
2633 | and change its target to the jump's target. The jump/bra | |
2634 | can then be deleted. 2 bytes | |
2635 | ||
2636 | * mov abs32 -> mov abs16 1 or 2 bytes | |
2637 | ||
2638 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
2639 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
2640 | ||
2641 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
2642 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
2643 | ||
2644 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
2645 | and somewhat more difficult to support. */ | |
2646 | ||
b34976b6 | 2647 | static bfd_boolean |
603b7257 NC |
2648 | mn10300_elf_relax_section (bfd *abfd, |
2649 | asection *sec, | |
2650 | struct bfd_link_info *link_info, | |
2651 | bfd_boolean *again) | |
252b5132 RH |
2652 | { |
2653 | Elf_Internal_Shdr *symtab_hdr; | |
2654 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
2655 | Elf_Internal_Rela *irel, *irelend; |
2656 | bfd_byte *contents = NULL; | |
6cdc0ccc | 2657 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 2658 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 2659 | asection *section = sec; |
fc91707c | 2660 | bfd_vma align_gap_adjustment; |
252b5132 | 2661 | |
c8a1f254 NS |
2662 | if (link_info->relocatable) |
2663 | (*link_info->callbacks->einfo) | |
2664 | (_("%P%F: --relax and -r may not be used together\n")); | |
2665 | ||
252b5132 | 2666 | /* Assume nothing changes. */ |
b34976b6 | 2667 | *again = FALSE; |
252b5132 RH |
2668 | |
2669 | /* We need a pointer to the mn10300 specific hash table. */ | |
2670 | hash_table = elf32_mn10300_hash_table (link_info); | |
4dfe6ac6 NC |
2671 | if (hash_table == NULL) |
2672 | return FALSE; | |
252b5132 RH |
2673 | |
2674 | /* Initialize fields in each hash table entry the first time through. */ | |
2675 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
2676 | { | |
2677 | bfd *input_bfd; | |
2678 | ||
2679 | /* Iterate over all the input bfds. */ | |
2680 | for (input_bfd = link_info->input_bfds; | |
2681 | input_bfd != NULL; | |
c72f2fb2 | 2682 | input_bfd = input_bfd->link.next) |
252b5132 | 2683 | { |
252b5132 RH |
2684 | /* We're going to need all the symbols for each bfd. */ |
2685 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 2686 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2687 | { |
6cdc0ccc AM |
2688 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2689 | if (isymbuf == NULL) | |
2690 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2691 | symtab_hdr->sh_info, 0, | |
2692 | NULL, NULL, NULL); | |
2693 | if (isymbuf == NULL) | |
010ac81f KH |
2694 | goto error_return; |
2695 | } | |
252b5132 RH |
2696 | |
2697 | /* Iterate over each section in this bfd. */ | |
2698 | for (section = input_bfd->sections; | |
2699 | section != NULL; | |
2700 | section = section->next) | |
2701 | { | |
2702 | struct elf32_mn10300_link_hash_entry *hash; | |
86033394 | 2703 | asection *sym_sec = NULL; |
252b5132 RH |
2704 | const char *sym_name; |
2705 | char *new_name; | |
252b5132 | 2706 | |
e948afaf | 2707 | /* If there's nothing to do in this section, skip it. */ |
eb13e63f DD |
2708 | if (! ((section->flags & SEC_RELOC) != 0 |
2709 | && section->reloc_count != 0)) | |
2710 | continue; | |
2711 | if ((section->flags & SEC_ALLOC) == 0) | |
e948afaf AO |
2712 | continue; |
2713 | ||
252b5132 RH |
2714 | /* Get cached copy of section contents if it exists. */ |
2715 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2716 | contents = elf_section_data (section)->this_hdr.contents; | |
eea6121a | 2717 | else if (section->size != 0) |
252b5132 RH |
2718 | { |
2719 | /* Go get them off disk. */ | |
eea6121a AM |
2720 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2721 | &contents)) | |
252b5132 RH |
2722 | goto error_return; |
2723 | } | |
2724 | else | |
6cdc0ccc | 2725 | contents = NULL; |
252b5132 RH |
2726 | |
2727 | /* If there aren't any relocs, then there's nothing to do. */ | |
2728 | if ((section->flags & SEC_RELOC) != 0 | |
2729 | && section->reloc_count != 0) | |
2730 | { | |
252b5132 | 2731 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2732 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2733 | NULL, NULL, | |
2734 | link_info->keep_memory); | |
252b5132 RH |
2735 | if (internal_relocs == NULL) |
2736 | goto error_return; | |
252b5132 RH |
2737 | |
2738 | /* Now examine each relocation. */ | |
2739 | irel = internal_relocs; | |
2740 | irelend = irel + section->reloc_count; | |
2741 | for (; irel < irelend; irel++) | |
2742 | { | |
2743 | long r_type; | |
2744 | unsigned long r_index; | |
2745 | unsigned char code; | |
2746 | ||
2747 | r_type = ELF32_R_TYPE (irel->r_info); | |
2748 | r_index = ELF32_R_SYM (irel->r_info); | |
2749 | ||
010ac81f | 2750 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
2751 | goto error_return; |
2752 | ||
2753 | /* We need the name and hash table entry of the target | |
2754 | symbol! */ | |
2755 | hash = NULL; | |
252b5132 RH |
2756 | sym_sec = NULL; |
2757 | ||
2758 | if (r_index < symtab_hdr->sh_info) | |
2759 | { | |
2760 | /* A local symbol. */ | |
6cdc0ccc | 2761 | Elf_Internal_Sym *isym; |
dc810e39 AM |
2762 | struct elf_link_hash_table *elftab; |
2763 | bfd_size_type amt; | |
252b5132 | 2764 | |
6cdc0ccc AM |
2765 | isym = isymbuf + r_index; |
2766 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2767 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2768 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2769 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2770 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2771 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2772 | else |
2773 | sym_sec | |
2774 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2775 | isym->st_shndx); |
a7c10850 | 2776 | |
9ad5cbcf AM |
2777 | sym_name |
2778 | = bfd_elf_string_from_elf_section (input_bfd, | |
2779 | (symtab_hdr | |
2780 | ->sh_link), | |
6cdc0ccc | 2781 | isym->st_name); |
252b5132 RH |
2782 | |
2783 | /* If it isn't a function, then we don't care | |
2784 | about it. */ | |
6cdc0ccc | 2785 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
2786 | continue; |
2787 | ||
2788 | /* Tack on an ID so we can uniquely identify this | |
2789 | local symbol in the global hash table. */ | |
dc810e39 AM |
2790 | amt = strlen (sym_name) + 10; |
2791 | new_name = bfd_malloc (amt); | |
bfff1642 | 2792 | if (new_name == NULL) |
252b5132 RH |
2793 | goto error_return; |
2794 | ||
f60ca5e3 | 2795 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2796 | sym_name = new_name; |
2797 | ||
dc810e39 AM |
2798 | elftab = &hash_table->static_hash_table->root; |
2799 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2800 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2801 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2802 | free (new_name); |
2803 | } | |
2804 | else | |
2805 | { | |
2806 | r_index -= symtab_hdr->sh_info; | |
2807 | hash = (struct elf32_mn10300_link_hash_entry *) | |
2808 | elf_sym_hashes (input_bfd)[r_index]; | |
2809 | } | |
2810 | ||
eb13e63f DD |
2811 | sym_name = hash->root.root.root.string; |
2812 | if ((section->flags & SEC_CODE) != 0) | |
2813 | { | |
2814 | /* If this is not a "call" instruction, then we | |
2815 | should convert "call" instructions to "calls" | |
2816 | instructions. */ | |
2817 | code = bfd_get_8 (input_bfd, | |
2818 | contents + irel->r_offset - 1); | |
2819 | if (code != 0xdd && code != 0xcd) | |
2820 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2821 | } | |
252b5132 | 2822 | |
6cdc0ccc AM |
2823 | /* If this is a jump/call, then bump the |
2824 | direct_calls counter. Else force "call" to | |
2825 | "calls" conversions. */ | |
252b5132 | 2826 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
2827 | || r_type == R_MN10300_PLT32 |
2828 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
2829 | || r_type == R_MN10300_PCREL16) |
2830 | hash->direct_calls++; | |
2831 | else | |
2832 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | /* Now look at the actual contents to get the stack size, | |
2837 | and a list of what registers were saved in the prologue | |
2838 | (ie movm_args). */ | |
2839 | if ((section->flags & SEC_CODE) != 0) | |
2840 | { | |
6cdc0ccc | 2841 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 2842 | unsigned int sec_shndx; |
6cdc0ccc AM |
2843 | struct elf_link_hash_entry **hashes; |
2844 | struct elf_link_hash_entry **end_hashes; | |
2845 | unsigned int symcount; | |
252b5132 | 2846 | |
9ad5cbcf AM |
2847 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2848 | section); | |
252b5132 | 2849 | |
1055df0f AO |
2850 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2851 | - symtab_hdr->sh_info); | |
2852 | hashes = elf_sym_hashes (input_bfd); | |
2853 | end_hashes = hashes + symcount; | |
2854 | ||
252b5132 RH |
2855 | /* Look at each function defined in this section and |
2856 | update info for that function. */ | |
6cdc0ccc AM |
2857 | isymend = isymbuf + symtab_hdr->sh_info; |
2858 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2859 | { |
6cdc0ccc AM |
2860 | if (isym->st_shndx == sec_shndx |
2861 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 2862 | { |
dc810e39 AM |
2863 | struct elf_link_hash_table *elftab; |
2864 | bfd_size_type amt; | |
1055df0f AO |
2865 | struct elf_link_hash_entry **lhashes = hashes; |
2866 | ||
2867 | /* Skip a local symbol if it aliases a | |
2868 | global one. */ | |
2869 | for (; lhashes < end_hashes; lhashes++) | |
2870 | { | |
2871 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; | |
2872 | if ((hash->root.root.type == bfd_link_hash_defined | |
2873 | || hash->root.root.type == bfd_link_hash_defweak) | |
2874 | && hash->root.root.u.def.section == section | |
2875 | && hash->root.type == STT_FUNC | |
2876 | && hash->root.root.u.def.value == isym->st_value) | |
2877 | break; | |
2878 | } | |
2879 | if (lhashes != end_hashes) | |
2880 | continue; | |
dc810e39 | 2881 | |
6cdc0ccc | 2882 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2883 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2884 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2885 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2886 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2887 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2888 | else |
2889 | sym_sec | |
2890 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2891 | isym->st_shndx); |
252b5132 | 2892 | |
dc810e39 AM |
2893 | sym_name = (bfd_elf_string_from_elf_section |
2894 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 2895 | isym->st_name)); |
252b5132 RH |
2896 | |
2897 | /* Tack on an ID so we can uniquely identify this | |
2898 | local symbol in the global hash table. */ | |
dc810e39 AM |
2899 | amt = strlen (sym_name) + 10; |
2900 | new_name = bfd_malloc (amt); | |
bfff1642 | 2901 | if (new_name == NULL) |
252b5132 RH |
2902 | goto error_return; |
2903 | ||
f60ca5e3 | 2904 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2905 | sym_name = new_name; |
2906 | ||
dc810e39 AM |
2907 | elftab = &hash_table->static_hash_table->root; |
2908 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2909 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2910 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2911 | free (new_name); |
2912 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 2913 | isym->st_value, contents); |
eb13e63f | 2914 | hash->value = isym->st_value; |
252b5132 RH |
2915 | } |
2916 | } | |
2917 | ||
6cdc0ccc | 2918 | for (; hashes < end_hashes; hashes++) |
252b5132 | 2919 | { |
6cdc0ccc | 2920 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2921 | if ((hash->root.root.type == bfd_link_hash_defined |
2922 | || hash->root.root.type == bfd_link_hash_defweak) | |
2923 | && hash->root.root.u.def.section == section | |
9bb351fd | 2924 | && hash->root.type == STT_FUNC) |
252b5132 RH |
2925 | compute_function_info (input_bfd, hash, |
2926 | (hash)->root.root.u.def.value, | |
2927 | contents); | |
2928 | } | |
2929 | } | |
2930 | ||
2931 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2932 | if (internal_relocs != NULL |
2933 | && elf_section_data (section)->relocs != internal_relocs) | |
2934 | free (internal_relocs); | |
2935 | internal_relocs = NULL; | |
252b5132 RH |
2936 | |
2937 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2938 | if (contents != NULL |
2939 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2940 | { |
2941 | if (! link_info->keep_memory) | |
6cdc0ccc | 2942 | free (contents); |
252b5132 RH |
2943 | else |
2944 | { | |
2945 | /* Cache the section contents for elf_link_input_bfd. */ | |
2946 | elf_section_data (section)->this_hdr.contents = contents; | |
2947 | } | |
252b5132 | 2948 | } |
6cdc0ccc | 2949 | contents = NULL; |
9ad5cbcf AM |
2950 | } |
2951 | ||
252b5132 | 2952 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2953 | if (isymbuf != NULL |
2954 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2955 | { |
2956 | if (! link_info->keep_memory) | |
6cdc0ccc | 2957 | free (isymbuf); |
252b5132 RH |
2958 | else |
2959 | { | |
2960 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 2961 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 2962 | } |
252b5132 | 2963 | } |
6cdc0ccc | 2964 | isymbuf = NULL; |
252b5132 RH |
2965 | } |
2966 | ||
2967 | /* Now iterate on each symbol in the hash table and perform | |
2968 | the final initialization steps on each. */ | |
2969 | elf32_mn10300_link_hash_traverse (hash_table, | |
2970 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2971 | link_info); |
252b5132 RH |
2972 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2973 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2974 | link_info); |
252b5132 | 2975 | |
eb13e63f DD |
2976 | { |
2977 | /* This section of code collects all our local symbols, sorts | |
2978 | them by value, and looks for multiple symbols referring to | |
2979 | the same address. For those symbols, the flags are merged. | |
2980 | At this point, the only flag that can be set is | |
2981 | MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags | |
2982 | together. */ | |
2983 | int static_count = 0, i; | |
2984 | struct elf32_mn10300_link_hash_entry **entries; | |
2985 | struct elf32_mn10300_link_hash_entry **ptr; | |
2986 | ||
2987 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2988 | elf32_mn10300_count_hash_table_entries, | |
2989 | &static_count); | |
2990 | ||
603b7257 | 2991 | entries = bfd_malloc (static_count * sizeof (* ptr)); |
eb13e63f DD |
2992 | |
2993 | ptr = entries; | |
2994 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2995 | elf32_mn10300_list_hash_table_entries, | |
603b7257 | 2996 | & ptr); |
eb13e63f | 2997 | |
603b7257 | 2998 | qsort (entries, static_count, sizeof (entries[0]), sort_by_value); |
eb13e63f | 2999 | |
603b7257 | 3000 | for (i = 0; i < static_count - 1; i++) |
eb13e63f DD |
3001 | if (entries[i]->value && entries[i]->value == entries[i+1]->value) |
3002 | { | |
3003 | int v = entries[i]->flags; | |
3004 | int j; | |
603b7257 NC |
3005 | |
3006 | for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 3007 | v |= entries[j]->flags; |
603b7257 NC |
3008 | |
3009 | for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 3010 | entries[j]->flags = v; |
603b7257 NC |
3011 | |
3012 | i = j - 1; | |
eb13e63f DD |
3013 | } |
3014 | } | |
3015 | ||
252b5132 RH |
3016 | /* All entries in the hash table are fully initialized. */ |
3017 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
3018 | ||
3019 | /* Now that everything has been initialized, go through each | |
3020 | code section and delete any prologue insns which will be | |
3021 | redundant because their operations will be performed by | |
3022 | a "call" instruction. */ | |
3023 | for (input_bfd = link_info->input_bfds; | |
3024 | input_bfd != NULL; | |
c72f2fb2 | 3025 | input_bfd = input_bfd->link.next) |
252b5132 | 3026 | { |
9ad5cbcf | 3027 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 3028 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 3029 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 3030 | { |
6cdc0ccc AM |
3031 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
3032 | if (isymbuf == NULL) | |
3033 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3034 | symtab_hdr->sh_info, 0, | |
3035 | NULL, NULL, NULL); | |
3036 | if (isymbuf == NULL) | |
9ad5cbcf | 3037 | goto error_return; |
010ac81f | 3038 | } |
252b5132 RH |
3039 | |
3040 | /* Walk over each section in this bfd. */ | |
3041 | for (section = input_bfd->sections; | |
3042 | section != NULL; | |
3043 | section = section->next) | |
3044 | { | |
9ad5cbcf | 3045 | unsigned int sec_shndx; |
6cdc0ccc AM |
3046 | Elf_Internal_Sym *isym, *isymend; |
3047 | struct elf_link_hash_entry **hashes; | |
3048 | struct elf_link_hash_entry **end_hashes; | |
3049 | unsigned int symcount; | |
252b5132 RH |
3050 | |
3051 | /* Skip non-code sections and empty sections. */ | |
eea6121a | 3052 | if ((section->flags & SEC_CODE) == 0 || section->size == 0) |
252b5132 RH |
3053 | continue; |
3054 | ||
3055 | if (section->reloc_count != 0) | |
3056 | { | |
010ac81f | 3057 | /* Get a copy of the native relocations. */ |
603b7257 NC |
3058 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
3059 | NULL, NULL, | |
3060 | link_info->keep_memory); | |
010ac81f KH |
3061 | if (internal_relocs == NULL) |
3062 | goto error_return; | |
252b5132 RH |
3063 | } |
3064 | ||
3065 | /* Get cached copy of section contents if it exists. */ | |
3066 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3067 | contents = elf_section_data (section)->this_hdr.contents; | |
3068 | else | |
3069 | { | |
3070 | /* Go get them off disk. */ | |
eea6121a AM |
3071 | if (!bfd_malloc_and_get_section (input_bfd, section, |
3072 | &contents)) | |
252b5132 RH |
3073 | goto error_return; |
3074 | } | |
3075 | ||
9ad5cbcf AM |
3076 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
3077 | section); | |
252b5132 RH |
3078 | |
3079 | /* Now look for any function in this section which needs | |
3080 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
3081 | isymend = isymbuf + symtab_hdr->sh_info; |
3082 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 3083 | { |
252b5132 | 3084 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 3085 | asection *sym_sec = NULL; |
252b5132 | 3086 | const char *sym_name; |
252b5132 | 3087 | char *new_name; |
dc810e39 AM |
3088 | struct elf_link_hash_table *elftab; |
3089 | bfd_size_type amt; | |
252b5132 | 3090 | |
6cdc0ccc | 3091 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
3092 | continue; |
3093 | ||
6cdc0ccc | 3094 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3095 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 3096 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3097 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 3098 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 3099 | sym_sec = bfd_com_section_ptr; |
86033394 | 3100 | else |
9ad5cbcf | 3101 | sym_sec |
6cdc0ccc | 3102 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 3103 | |
9ad5cbcf AM |
3104 | sym_name |
3105 | = bfd_elf_string_from_elf_section (input_bfd, | |
3106 | symtab_hdr->sh_link, | |
6cdc0ccc | 3107 | isym->st_name); |
252b5132 RH |
3108 | |
3109 | /* Tack on an ID so we can uniquely identify this | |
3110 | local symbol in the global hash table. */ | |
dc810e39 AM |
3111 | amt = strlen (sym_name) + 10; |
3112 | new_name = bfd_malloc (amt); | |
bfff1642 | 3113 | if (new_name == NULL) |
252b5132 | 3114 | goto error_return; |
f60ca5e3 | 3115 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
3116 | sym_name = new_name; |
3117 | ||
603b7257 NC |
3118 | elftab = & hash_table->static_hash_table->root; |
3119 | sym_hash = (struct elf32_mn10300_link_hash_entry *) | |
3120 | elf_link_hash_lookup (elftab, sym_name, | |
3121 | FALSE, FALSE, FALSE); | |
252b5132 RH |
3122 | |
3123 | free (new_name); | |
3124 | if (sym_hash == NULL) | |
3125 | continue; | |
3126 | ||
9ad5cbcf AM |
3127 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
3128 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
3129 | { |
3130 | int bytes = 0; | |
3131 | ||
3132 | /* Note that we've changed things. */ | |
3133 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 3134 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 3135 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3136 | |
3137 | /* Count how many bytes we're going to delete. */ | |
3138 | if (sym_hash->movm_args) | |
3139 | bytes += 2; | |
3140 | ||
1a101a42 AM |
3141 | if (sym_hash->stack_size > 0) |
3142 | { | |
3143 | if (sym_hash->stack_size <= 128) | |
3144 | bytes += 3; | |
3145 | else | |
3146 | bytes += 4; | |
3147 | } | |
252b5132 RH |
3148 | |
3149 | /* Note that we've deleted prologue bytes for this | |
3150 | function. */ | |
3151 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
3152 | ||
3153 | /* Actually delete the bytes. */ | |
3154 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
3155 | section, | |
6cdc0ccc | 3156 | isym->st_value, |
252b5132 RH |
3157 | bytes)) |
3158 | goto error_return; | |
3159 | ||
3160 | /* Something changed. Not strictly necessary, but | |
3161 | may lead to more relaxing opportunities. */ | |
b34976b6 | 3162 | *again = TRUE; |
252b5132 RH |
3163 | } |
3164 | } | |
3165 | ||
3166 | /* Look for any global functions in this section which | |
3167 | need insns deleted from their prologues. */ | |
6cdc0ccc | 3168 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 3169 | - symtab_hdr->sh_info); |
709e685d | 3170 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
3171 | end_hashes = hashes + symcount; |
3172 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 3173 | { |
252b5132 RH |
3174 | struct elf32_mn10300_link_hash_entry *sym_hash; |
3175 | ||
6cdc0ccc | 3176 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
3177 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
3178 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
3179 | && sym_hash->root.root.u.def.section == section | |
3180 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
3181 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
3182 | { |
3183 | int bytes = 0; | |
9ad5cbcf | 3184 | bfd_vma symval; |
0a22ae8e | 3185 | struct elf_link_hash_entry **hh; |
252b5132 RH |
3186 | |
3187 | /* Note that we've changed things. */ | |
3188 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 3189 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 3190 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3191 | |
3192 | /* Count how many bytes we're going to delete. */ | |
3193 | if (sym_hash->movm_args) | |
3194 | bytes += 2; | |
3195 | ||
1a101a42 AM |
3196 | if (sym_hash->stack_size > 0) |
3197 | { | |
3198 | if (sym_hash->stack_size <= 128) | |
3199 | bytes += 3; | |
3200 | else | |
3201 | bytes += 4; | |
3202 | } | |
252b5132 RH |
3203 | |
3204 | /* Note that we've deleted prologue bytes for this | |
3205 | function. */ | |
3206 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
3207 | ||
3208 | /* Actually delete the bytes. */ | |
9ad5cbcf | 3209 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
3210 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
3211 | section, | |
9ad5cbcf | 3212 | symval, |
252b5132 RH |
3213 | bytes)) |
3214 | goto error_return; | |
3215 | ||
0a22ae8e NC |
3216 | /* There may be other C++ functions symbols with the same |
3217 | address. If so then mark these as having had their | |
3218 | prologue bytes deleted as well. */ | |
3219 | for (hh = elf_sym_hashes (input_bfd); hh < end_hashes; hh++) | |
3220 | { | |
3221 | struct elf32_mn10300_link_hash_entry *h; | |
3222 | ||
3223 | h = (struct elf32_mn10300_link_hash_entry *) * hh; | |
3224 | ||
3225 | if (h != sym_hash | |
3226 | && (h->root.root.type == bfd_link_hash_defined | |
3227 | || h->root.root.type == bfd_link_hash_defweak) | |
3228 | && h->root.root.u.def.section == section | |
3229 | && ! (h->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
3230 | && h->root.root.u.def.value == symval | |
3231 | && h->root.type == STT_FUNC) | |
3232 | h->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
3233 | } | |
3234 | ||
252b5132 RH |
3235 | /* Something changed. Not strictly necessary, but |
3236 | may lead to more relaxing opportunities. */ | |
b34976b6 | 3237 | *again = TRUE; |
252b5132 RH |
3238 | } |
3239 | } | |
3240 | ||
3241 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
3242 | if (internal_relocs != NULL |
3243 | && elf_section_data (section)->relocs != internal_relocs) | |
3244 | free (internal_relocs); | |
3245 | internal_relocs = NULL; | |
252b5132 RH |
3246 | |
3247 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
3248 | if (contents != NULL |
3249 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
3250 | { |
3251 | if (! link_info->keep_memory) | |
6cdc0ccc | 3252 | free (contents); |
252b5132 | 3253 | else |
603b7257 NC |
3254 | /* Cache the section contents for elf_link_input_bfd. */ |
3255 | elf_section_data (section)->this_hdr.contents = contents; | |
252b5132 | 3256 | } |
6cdc0ccc | 3257 | contents = NULL; |
9ad5cbcf AM |
3258 | } |
3259 | ||
252b5132 | 3260 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
3261 | if (isymbuf != NULL |
3262 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3263 | { |
3264 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3265 | free (isymbuf); |
3266 | else | |
603b7257 NC |
3267 | /* Cache the symbols for elf_link_input_bfd. */ |
3268 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3269 | } |
6cdc0ccc | 3270 | isymbuf = NULL; |
252b5132 RH |
3271 | } |
3272 | } | |
3273 | ||
252b5132 RH |
3274 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
3275 | contents = NULL; | |
252b5132 | 3276 | internal_relocs = NULL; |
6cdc0ccc AM |
3277 | isymbuf = NULL; |
3278 | /* For error_return. */ | |
3279 | section = sec; | |
252b5132 | 3280 | |
1049f94e | 3281 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
3282 | this section does not have relocs, or if this is not a |
3283 | code section. */ | |
1049f94e | 3284 | if (link_info->relocatable |
252b5132 RH |
3285 | || (sec->flags & SEC_RELOC) == 0 |
3286 | || sec->reloc_count == 0 | |
3287 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 3288 | return TRUE; |
252b5132 | 3289 | |
252b5132 RH |
3290 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3291 | ||
3292 | /* Get a copy of the native relocations. */ | |
603b7257 NC |
3293 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
3294 | link_info->keep_memory); | |
252b5132 RH |
3295 | if (internal_relocs == NULL) |
3296 | goto error_return; | |
252b5132 | 3297 | |
fc91707c NC |
3298 | /* Scan for worst case alignment gap changes. Note that this logic |
3299 | is not ideal; what we should do is run this scan for every | |
3300 | opcode/address range and adjust accordingly, but that's | |
3301 | expensive. Worst case is that for an alignment of N bytes, we | |
3302 | move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc | |
3303 | all before it. Plus, this still doesn't cover cross-section | |
3304 | jumps with section alignment. */ | |
3305 | irelend = internal_relocs + sec->reloc_count; | |
3306 | align_gap_adjustment = 0; | |
3307 | for (irel = internal_relocs; irel < irelend; irel++) | |
3308 | { | |
3309 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN) | |
3310 | { | |
3311 | bfd_vma adj = 1 << irel->r_addend; | |
3312 | bfd_vma aend = irel->r_offset; | |
3313 | ||
3314 | aend = BFD_ALIGN (aend, 1 << irel->r_addend); | |
e23f1610 | 3315 | adj = 2 * adj - adj - 1; |
fc91707c NC |
3316 | |
3317 | /* Record the biggest adjustmnet. Skip any alignment at the | |
3318 | end of our section. */ | |
3319 | if (align_gap_adjustment < adj | |
3320 | && aend < sec->output_section->vma + sec->output_offset + sec->size) | |
3321 | align_gap_adjustment = adj; | |
3322 | } | |
3323 | } | |
3324 | ||
252b5132 RH |
3325 | /* Walk through them looking for relaxing opportunities. */ |
3326 | irelend = internal_relocs + sec->reloc_count; | |
3327 | for (irel = internal_relocs; irel < irelend; irel++) | |
3328 | { | |
3329 | bfd_vma symval; | |
605d18d4 DD |
3330 | bfd_signed_vma jump_offset; |
3331 | asection *sym_sec = NULL; | |
252b5132 RH |
3332 | struct elf32_mn10300_link_hash_entry *h = NULL; |
3333 | ||
3334 | /* If this isn't something that can be relaxed, then ignore | |
3335 | this reloc. */ | |
3336 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
3337 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
3338 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
3339 | continue; | |
3340 | ||
3341 | /* Get the section contents if we haven't done so already. */ | |
3342 | if (contents == NULL) | |
3343 | { | |
3344 | /* Get cached copy if it exists. */ | |
3345 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3346 | contents = elf_section_data (sec)->this_hdr.contents; | |
3347 | else | |
3348 | { | |
3349 | /* Go get them off disk. */ | |
eea6121a | 3350 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
3351 | goto error_return; |
3352 | } | |
3353 | } | |
3354 | ||
b34976b6 | 3355 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 3356 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 3357 | { |
6cdc0ccc AM |
3358 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
3359 | if (isymbuf == NULL) | |
3360 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3361 | symtab_hdr->sh_info, 0, | |
3362 | NULL, NULL, NULL); | |
3363 | if (isymbuf == NULL) | |
3364 | goto error_return; | |
252b5132 RH |
3365 | } |
3366 | ||
3367 | /* Get the value of the symbol referred to by the reloc. */ | |
3368 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
3369 | { | |
6cdc0ccc | 3370 | Elf_Internal_Sym *isym; |
252b5132 RH |
3371 | const char *sym_name; |
3372 | char *new_name; | |
3373 | ||
3374 | /* A local symbol. */ | |
6cdc0ccc AM |
3375 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
3376 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 3377 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 3378 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3379 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 3380 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 3381 | sym_sec = bfd_com_section_ptr; |
86033394 | 3382 | else |
6cdc0ccc | 3383 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 3384 | |
252b5132 RH |
3385 | sym_name = bfd_elf_string_from_elf_section (abfd, |
3386 | symtab_hdr->sh_link, | |
6cdc0ccc | 3387 | isym->st_name); |
252b5132 | 3388 | |
dd90f1b2 | 3389 | if ((sym_sec->flags & SEC_MERGE) |
dbaa2011 | 3390 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
dd90f1b2 | 3391 | { |
2709f570 NC |
3392 | symval = isym->st_value; |
3393 | ||
3394 | /* GAS may reduce relocations against symbols in SEC_MERGE | |
3395 | sections to a relocation against the section symbol when | |
3396 | the original addend was zero. When the reloc is against | |
3397 | a section symbol we should include the addend in the | |
3398 | offset passed to _bfd_merged_section_offset, since the | |
3399 | location of interest is the original symbol. On the | |
3400 | other hand, an access to "sym+addend" where "sym" is not | |
3401 | a section symbol should not include the addend; Such an | |
3402 | access is presumed to be an offset from "sym"; The | |
3403 | location of interest is just "sym". */ | |
3404 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
3405 | symval += irel->r_addend; | |
3406 | ||
281153f3 NC |
3407 | symval = _bfd_merged_section_offset (abfd, & sym_sec, |
3408 | elf_section_data (sym_sec)->sec_info, | |
3409 | symval); | |
2709f570 NC |
3410 | |
3411 | if (ELF_ST_TYPE (isym->st_info) != STT_SECTION) | |
3412 | symval += irel->r_addend; | |
3413 | ||
3414 | symval += sym_sec->output_section->vma | |
3415 | + sym_sec->output_offset - irel->r_addend; | |
dd90f1b2 DD |
3416 | } |
3417 | else | |
bfff1642 NC |
3418 | symval = (isym->st_value |
3419 | + sym_sec->output_section->vma | |
3420 | + sym_sec->output_offset); | |
603b7257 | 3421 | |
252b5132 RH |
3422 | /* Tack on an ID so we can uniquely identify this |
3423 | local symbol in the global hash table. */ | |
dc810e39 | 3424 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
bfff1642 | 3425 | if (new_name == NULL) |
252b5132 | 3426 | goto error_return; |
f60ca5e3 | 3427 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
3428 | sym_name = new_name; |
3429 | ||
3430 | h = (struct elf32_mn10300_link_hash_entry *) | |
3431 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 3432 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
3433 | free (new_name); |
3434 | } | |
3435 | else | |
3436 | { | |
3437 | unsigned long indx; | |
3438 | ||
3439 | /* An external symbol. */ | |
3440 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
3441 | h = (struct elf32_mn10300_link_hash_entry *) | |
3442 | (elf_sym_hashes (abfd)[indx]); | |
3443 | BFD_ASSERT (h != NULL); | |
3444 | if (h->root.root.type != bfd_link_hash_defined | |
3445 | && h->root.root.type != bfd_link_hash_defweak) | |
603b7257 NC |
3446 | /* This appears to be a reference to an undefined |
3447 | symbol. Just ignore it--it will be caught by the | |
3448 | regular reloc processing. */ | |
3449 | continue; | |
252b5132 | 3450 | |
bfff1642 NC |
3451 | /* Check for a reference to a discarded symbol and ignore it. */ |
3452 | if (h->root.root.u.def.section->output_section == NULL) | |
3453 | continue; | |
3454 | ||
605d18d4 DD |
3455 | sym_sec = h->root.root.u.def.section->output_section; |
3456 | ||
252b5132 RH |
3457 | symval = (h->root.root.u.def.value |
3458 | + h->root.root.u.def.section->output_section->vma | |
3459 | + h->root.root.u.def.section->output_offset); | |
3460 | } | |
3461 | ||
3462 | /* For simplicity of coding, we are going to modify the section | |
3463 | contents, the section relocs, and the BFD symbol table. We | |
3464 | must tell the rest of the code not to free up this | |
3465 | information. It would be possible to instead create a table | |
3466 | of changes which have to be made, as is done in coff-mips.c; | |
3467 | that would be more work, but would require less memory when | |
3468 | the linker is run. */ | |
3469 | ||
3470 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
3471 | branch/call, also deal with "call" -> "calls" conversions and | |
3472 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
3473 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
3474 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
3475 | { |
3476 | bfd_vma value = symval; | |
3477 | ||
03a12831 AO |
3478 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
3479 | && h != NULL | |
3480 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
3481 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
3482 | && h->root.plt.offset != (bfd_vma) -1) | |
3483 | { | |
3484 | asection * splt; | |
3485 | ||
3d4d4302 | 3486 | splt = hash_table->root.splt; |
03a12831 AO |
3487 | value = ((splt->output_section->vma |
3488 | + splt->output_offset | |
3489 | + h->root.plt.offset) | |
3490 | - (sec->output_section->vma | |
3491 | + sec->output_offset | |
3492 | + irel->r_offset)); | |
3493 | } | |
3494 | ||
252b5132 RH |
3495 | /* If we've got a "call" instruction that needs to be turned |
3496 | into a "calls" instruction, do so now. It saves a byte. */ | |
3497 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
3498 | { | |
3499 | unsigned char code; | |
3500 | ||
3501 | /* Get the opcode. */ | |
3502 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3503 | ||
3504 | /* Make sure we're working with a "call" instruction! */ | |
3505 | if (code == 0xdd) | |
3506 | { | |
3507 | /* Note that we've changed the relocs, section contents, | |
3508 | etc. */ | |
3509 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3510 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3511 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3512 | |
3513 | /* Fix the opcode. */ | |
3514 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
3515 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
3516 | ||
3517 | /* Fix irel->r_offset and irel->r_addend. */ | |
3518 | irel->r_offset += 1; | |
3519 | irel->r_addend += 1; | |
3520 | ||
3521 | /* Delete one byte of data. */ | |
3522 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3523 | irel->r_offset + 3, 1)) | |
3524 | goto error_return; | |
3525 | ||
3526 | /* That will change things, so, we should relax again. | |
3527 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3528 | *again = TRUE; |
252b5132 RH |
3529 | } |
3530 | } | |
3531 | else if (h) | |
3532 | { | |
3533 | /* We've got a "call" instruction which needs some data | |
3534 | from target function filled in. */ | |
3535 | unsigned char code; | |
3536 | ||
3537 | /* Get the opcode. */ | |
3538 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3539 | ||
3540 | /* Insert data from the target function into the "call" | |
3541 | instruction if needed. */ | |
3542 | if (code == 0xdd) | |
3543 | { | |
3544 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
3545 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
3546 | contents + irel->r_offset + 5); | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | /* Deal with pc-relative gunk. */ | |
3551 | value -= (sec->output_section->vma + sec->output_offset); | |
3552 | value -= irel->r_offset; | |
3553 | value += irel->r_addend; | |
3554 | ||
3555 | /* See if the value will fit in 16 bits, note the high value is | |
3556 | 0x7fff + 2 as the target will be two bytes closer if we are | |
605d18d4 DD |
3557 | able to relax, if it's in the same section. */ |
3558 | if (sec->output_section == sym_sec->output_section) | |
3559 | jump_offset = 0x8001; | |
3560 | else | |
3561 | jump_offset = 0x7fff; | |
3562 | ||
fc91707c NC |
3563 | /* Account for jumps across alignment boundaries using |
3564 | align_gap_adjustment. */ | |
605d18d4 | 3565 | if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment |
fc91707c | 3566 | && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment)) |
252b5132 RH |
3567 | { |
3568 | unsigned char code; | |
3569 | ||
3570 | /* Get the opcode. */ | |
3571 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3572 | ||
3573 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
3574 | continue; | |
3575 | ||
3576 | /* Note that we've changed the relocs, section contents, etc. */ | |
3577 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3578 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3579 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3580 | |
3581 | /* Fix the opcode. */ | |
3582 | if (code == 0xdc) | |
3583 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
3584 | else if (code == 0xdd) | |
3585 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
3586 | else if (code == 0xff) | |
3587 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3588 | ||
3589 | /* Fix the relocation's type. */ | |
3590 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3591 | (ELF32_R_TYPE (irel->r_info) |
3592 | == (int) R_MN10300_PLT32) | |
3593 | ? R_MN10300_PLT16 : | |
252b5132 RH |
3594 | R_MN10300_PCREL16); |
3595 | ||
3596 | /* Delete two bytes of data. */ | |
3597 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3598 | irel->r_offset + 1, 2)) | |
3599 | goto error_return; | |
3600 | ||
3601 | /* That will change things, so, we should relax again. | |
3602 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3603 | *again = TRUE; |
252b5132 RH |
3604 | } |
3605 | } | |
3606 | ||
3607 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
3608 | branch. */ | |
3609 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
3610 | { | |
3611 | bfd_vma value = symval; | |
3612 | ||
3613 | /* If we've got a "call" instruction that needs to be turned | |
3614 | into a "calls" instruction, do so now. It saves a byte. */ | |
3615 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
3616 | { | |
3617 | unsigned char code; | |
3618 | ||
3619 | /* Get the opcode. */ | |
3620 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3621 | ||
3622 | /* Make sure we're working with a "call" instruction! */ | |
3623 | if (code == 0xcd) | |
3624 | { | |
3625 | /* Note that we've changed the relocs, section contents, | |
3626 | etc. */ | |
3627 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3628 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3629 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3630 | |
3631 | /* Fix the opcode. */ | |
3632 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
3633 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
3634 | ||
3635 | /* Fix irel->r_offset and irel->r_addend. */ | |
3636 | irel->r_offset += 1; | |
3637 | irel->r_addend += 1; | |
3638 | ||
3639 | /* Delete one byte of data. */ | |
3640 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3641 | irel->r_offset + 1, 1)) | |
3642 | goto error_return; | |
3643 | ||
3644 | /* That will change things, so, we should relax again. | |
3645 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3646 | *again = TRUE; |
252b5132 RH |
3647 | } |
3648 | } | |
3649 | else if (h) | |
3650 | { | |
3651 | unsigned char code; | |
3652 | ||
3653 | /* Get the opcode. */ | |
3654 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3655 | ||
3656 | /* Insert data from the target function into the "call" | |
3657 | instruction if needed. */ | |
3658 | if (code == 0xcd) | |
3659 | { | |
3660 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
3661 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
3662 | contents + irel->r_offset + 3); | |
3663 | } | |
3664 | } | |
3665 | ||
3666 | /* Deal with pc-relative gunk. */ | |
3667 | value -= (sec->output_section->vma + sec->output_offset); | |
3668 | value -= irel->r_offset; | |
3669 | value += irel->r_addend; | |
3670 | ||
3671 | /* See if the value will fit in 8 bits, note the high value is | |
3672 | 0x7f + 1 as the target will be one bytes closer if we are | |
3673 | able to relax. */ | |
010ac81f | 3674 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
3675 | { |
3676 | unsigned char code; | |
3677 | ||
3678 | /* Get the opcode. */ | |
3679 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3680 | ||
3681 | if (code != 0xcc) | |
3682 | continue; | |
3683 | ||
3684 | /* Note that we've changed the relocs, section contents, etc. */ | |
3685 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3686 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3687 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3688 | |
3689 | /* Fix the opcode. */ | |
3690 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
3691 | ||
3692 | /* Fix the relocation's type. */ | |
3693 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3694 | R_MN10300_PCREL8); | |
3695 | ||
3696 | /* Delete one byte of data. */ | |
3697 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3698 | irel->r_offset + 1, 1)) | |
3699 | goto error_return; | |
3700 | ||
3701 | /* That will change things, so, we should relax again. | |
3702 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3703 | *again = TRUE; |
252b5132 RH |
3704 | } |
3705 | } | |
3706 | ||
3707 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
3708 | which immediately follows a conditional 8 bit pc-relative | |
3709 | branch around the unconditional branch. | |
3710 | ||
3711 | original: new: | |
3712 | bCC lab1 bCC' lab2 | |
3713 | bra lab2 | |
3714 | lab1: lab1: | |
3715 | ||
252b5132 RH |
3716 | This happens when the bCC can't reach lab2 at assembly time, |
3717 | but due to other relaxations it can reach at link time. */ | |
3718 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
3719 | { | |
3720 | Elf_Internal_Rela *nrel; | |
3721 | bfd_vma value = symval; | |
3722 | unsigned char code; | |
3723 | ||
3724 | /* Deal with pc-relative gunk. */ | |
3725 | value -= (sec->output_section->vma + sec->output_offset); | |
3726 | value -= irel->r_offset; | |
3727 | value += irel->r_addend; | |
3728 | ||
3729 | /* Do nothing if this reloc is the last byte in the section. */ | |
eea6121a | 3730 | if (irel->r_offset == sec->size) |
252b5132 RH |
3731 | continue; |
3732 | ||
3733 | /* See if the next instruction is an unconditional pc-relative | |
3734 | branch, more often than not this test will fail, so we | |
3735 | test it first to speed things up. */ | |
3736 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
3737 | if (code != 0xca) | |
3738 | continue; | |
3739 | ||
3740 | /* Also make sure the next relocation applies to the next | |
3741 | instruction and that it's a pc-relative 8 bit branch. */ | |
3742 | nrel = irel + 1; | |
3743 | if (nrel == irelend | |
3744 | || irel->r_offset + 2 != nrel->r_offset | |
3745 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
3746 | continue; | |
3747 | ||
3748 | /* Make sure our destination immediately follows the | |
3749 | unconditional branch. */ | |
3750 | if (symval != (sec->output_section->vma + sec->output_offset | |
3751 | + irel->r_offset + 3)) | |
3752 | continue; | |
3753 | ||
3754 | /* Now make sure we are a conditional branch. This may not | |
3755 | be necessary, but why take the chance. | |
3756 | ||
3757 | Note these checks assume that R_MN10300_PCREL8 relocs | |
3758 | only occur on bCC and bCCx insns. If they occured | |
3759 | elsewhere, we'd need to know the start of this insn | |
3760 | for this check to be accurate. */ | |
3761 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3762 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
3763 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
3764 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
3765 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
3766 | && code != 0xea && code != 0xeb) | |
3767 | continue; | |
3768 | ||
3769 | /* We also have to be sure there is no symbol/label | |
3770 | at the unconditional branch. */ | |
6cdc0ccc AM |
3771 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
3772 | irel->r_offset + 1)) | |
252b5132 RH |
3773 | continue; |
3774 | ||
3775 | /* Note that we've changed the relocs, section contents, etc. */ | |
3776 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3777 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3778 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3779 | |
3780 | /* Reverse the condition of the first branch. */ | |
3781 | switch (code) | |
3782 | { | |
010ac81f KH |
3783 | case 0xc8: |
3784 | code = 0xc9; | |
3785 | break; | |
3786 | case 0xc9: | |
3787 | code = 0xc8; | |
3788 | break; | |
3789 | case 0xc0: | |
3790 | code = 0xc2; | |
3791 | break; | |
3792 | case 0xc2: | |
3793 | code = 0xc0; | |
3794 | break; | |
3795 | case 0xc3: | |
3796 | code = 0xc1; | |
3797 | break; | |
3798 | case 0xc1: | |
3799 | code = 0xc3; | |
3800 | break; | |
3801 | case 0xc4: | |
3802 | code = 0xc6; | |
3803 | break; | |
3804 | case 0xc6: | |
3805 | code = 0xc4; | |
3806 | break; | |
3807 | case 0xc7: | |
3808 | code = 0xc5; | |
3809 | break; | |
3810 | case 0xc5: | |
3811 | code = 0xc7; | |
3812 | break; | |
3813 | case 0xe8: | |
3814 | code = 0xe9; | |
3815 | break; | |
3816 | case 0x9d: | |
3817 | code = 0xe8; | |
3818 | break; | |
3819 | case 0xea: | |
3820 | code = 0xeb; | |
3821 | break; | |
3822 | case 0xeb: | |
3823 | code = 0xea; | |
3824 | break; | |
252b5132 RH |
3825 | } |
3826 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3827 | ||
3828 | /* Set the reloc type and symbol for the first branch | |
3829 | from the second branch. */ | |
3830 | irel->r_info = nrel->r_info; | |
3831 | ||
3832 | /* Make the reloc for the second branch a null reloc. */ | |
3833 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
3834 | R_MN10300_NONE); | |
3835 | ||
3836 | /* Delete two bytes of data. */ | |
3837 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3838 | irel->r_offset + 1, 2)) | |
3839 | goto error_return; | |
3840 | ||
3841 | /* That will change things, so, we should relax again. | |
3842 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3843 | *again = TRUE; |
252b5132 RH |
3844 | } |
3845 | ||
31f8dc8f JL |
3846 | /* Try to turn a 24 immediate, displacement or absolute address |
3847 | into a 8 immediate, displacement or absolute address. */ | |
3848 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
3849 | { | |
3850 | bfd_vma value = symval; | |
3851 | value += irel->r_addend; | |
3852 | ||
3853 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 3854 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
3855 | { |
3856 | unsigned char code; | |
3857 | ||
3858 | /* AM33 insns which have 24 operands are 6 bytes long and | |
3859 | will have 0xfd as the first byte. */ | |
3860 | ||
3861 | /* Get the first opcode. */ | |
3862 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3863 | ||
3864 | if (code == 0xfd) | |
3865 | { | |
010ac81f KH |
3866 | /* Get the second opcode. */ |
3867 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3868 | |
3869 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3870 | equivalent instructions exists. */ | |
3b36f7e6 | 3871 | if (code != 0x6b && code != 0x7b |
31f8dc8f JL |
3872 | && code != 0x8b && code != 0x9b |
3873 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
3874 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3875 | || (code & 0x0f) == 0x0e)) | |
3876 | { | |
3877 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3878 | move the value out of high mem and thus not fit |
3879 | in a signed 8bit value. This is currently over | |
3880 | conservative. */ | |
31f8dc8f JL |
3881 | if ((value & 0x80) == 0) |
3882 | { | |
3883 | /* Note that we've changed the relocation contents, | |
3884 | etc. */ | |
3885 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3886 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3887 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3888 | |
3889 | /* Fix the opcode. */ | |
3890 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
3891 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3892 | ||
3893 | /* Fix the relocation's type. */ | |
010ac81f KH |
3894 | irel->r_info = |
3895 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3896 | R_MN10300_8); | |
31f8dc8f JL |
3897 | |
3898 | /* Delete two bytes of data. */ | |
3899 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3900 | irel->r_offset + 1, 2)) | |
3901 | goto error_return; | |
3902 | ||
3903 | /* That will change things, so, we should relax | |
3904 | again. Note that this is not required, and it | |
010ac81f | 3905 | may be slow. */ |
b34976b6 | 3906 | *again = TRUE; |
31f8dc8f JL |
3907 | break; |
3908 | } | |
3909 | } | |
31f8dc8f JL |
3910 | } |
3911 | } | |
3912 | } | |
252b5132 RH |
3913 | |
3914 | /* Try to turn a 32bit immediate, displacement or absolute address | |
3915 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
3916 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
3917 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
eb13e63f | 3918 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
252b5132 RH |
3919 | { |
3920 | bfd_vma value = symval; | |
03a12831 AO |
3921 | |
3922 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
3923 | { | |
3924 | asection * sgot; | |
3925 | ||
3d4d4302 | 3926 | sgot = hash_table->root.sgot; |
03a12831 AO |
3927 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) |
3928 | { | |
3929 | value = sgot->output_offset; | |
3930 | ||
3931 | if (h) | |
3932 | value += h->root.got.offset; | |
3933 | else | |
3934 | value += (elf_local_got_offsets | |
3935 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
3936 | } | |
3937 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
3938 | value -= sgot->output_section->vma; | |
3939 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
3940 | value = (sgot->output_section->vma | |
3941 | - (sec->output_section->vma | |
3942 | + sec->output_offset | |
3943 | + irel->r_offset)); | |
3944 | else | |
3945 | abort (); | |
3946 | } | |
3947 | ||
252b5132 RH |
3948 | value += irel->r_addend; |
3949 | ||
31f8dc8f JL |
3950 | /* See if the value will fit in 24 bits. |
3951 | We allow any 16bit match here. We prune those we can't | |
3952 | handle below. */ | |
010ac81f | 3953 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
3954 | { |
3955 | unsigned char code; | |
3956 | ||
3957 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
3958 | will have 0xfe as the first byte. */ | |
3959 | ||
3960 | /* Get the first opcode. */ | |
3961 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3962 | ||
3963 | if (code == 0xfe) | |
3964 | { | |
3b36f7e6 AM |
3965 | /* Get the second opcode. */ |
3966 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3967 | |
3968 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
3969 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3970 | equivalent instructions exists. */ | |
010ac81f | 3971 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 3972 | && code != 0x8b && code != 0x9b |
03a12831 AO |
3973 | && (ELF32_R_TYPE (irel->r_info) |
3974 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
3975 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3976 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3977 | || (code & 0x0f) == 0x0e)) | |
3978 | { | |
3979 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3980 | move the value out of high mem and thus not fit |
3981 | in a signed 16bit value. This is currently over | |
3982 | conservative. */ | |
31f8dc8f JL |
3983 | if ((value & 0x8000) == 0) |
3984 | { | |
3985 | /* Note that we've changed the relocation contents, | |
3986 | etc. */ | |
3987 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3988 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3989 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3990 | |
3991 | /* Fix the opcode. */ | |
3992 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
3993 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3994 | ||
3995 | /* Fix the relocation's type. */ | |
010ac81f KH |
3996 | irel->r_info = |
3997 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3998 | (ELF32_R_TYPE (irel->r_info) |
3999 | == (int) R_MN10300_GOTOFF32) | |
4000 | ? R_MN10300_GOTOFF24 | |
4001 | : (ELF32_R_TYPE (irel->r_info) | |
4002 | == (int) R_MN10300_GOT32) | |
4003 | ? R_MN10300_GOT24 : | |
010ac81f | 4004 | R_MN10300_24); |
31f8dc8f JL |
4005 | |
4006 | /* Delete one byte of data. */ | |
4007 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4008 | irel->r_offset + 3, 1)) | |
4009 | goto error_return; | |
4010 | ||
4011 | /* That will change things, so, we should relax | |
4012 | again. Note that this is not required, and it | |
010ac81f | 4013 | may be slow. */ |
b34976b6 | 4014 | *again = TRUE; |
31f8dc8f JL |
4015 | break; |
4016 | } | |
4017 | } | |
31f8dc8f JL |
4018 | } |
4019 | } | |
252b5132 RH |
4020 | |
4021 | /* See if the value will fit in 16 bits. | |
4022 | We allow any 16bit match here. We prune those we can't | |
4023 | handle below. */ | |
010ac81f | 4024 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
4025 | { |
4026 | unsigned char code; | |
4027 | ||
4028 | /* Most insns which have 32bit operands are 6 bytes long; | |
4029 | exceptions are pcrel insns and bit insns. | |
4030 | ||
4031 | We handle pcrel insns above. We don't bother trying | |
4032 | to handle the bit insns here. | |
4033 | ||
4034 | The first byte of the remaining insns will be 0xfc. */ | |
4035 | ||
4036 | /* Get the first opcode. */ | |
4037 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
4038 | ||
4039 | if (code != 0xfc) | |
4040 | continue; | |
4041 | ||
4042 | /* Get the second opcode. */ | |
4043 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
4044 | ||
4045 | if ((code & 0xf0) < 0x80) | |
4046 | switch (code & 0xf0) | |
4047 | { | |
4048 | /* mov (d32,am),dn -> mov (d32,am),dn | |
4049 | mov dm,(d32,am) -> mov dn,(d32,am) | |
4050 | mov (d32,am),an -> mov (d32,am),an | |
4051 | mov dm,(d32,am) -> mov dn,(d32,am) | |
4052 | movbu (d32,am),dn -> movbu (d32,am),dn | |
4053 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
4054 | movhu (d32,am),dn -> movhu (d32,am),dn | |
4055 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
4056 | case 0x00: | |
4057 | case 0x10: | |
4058 | case 0x20: | |
4059 | case 0x30: | |
4060 | case 0x40: | |
4061 | case 0x50: | |
4062 | case 0x60: | |
4063 | case 0x70: | |
4064 | /* Not safe if the high bit is on as relaxing may | |
4065 | move the value out of high mem and thus not fit | |
4066 | in a signed 16bit value. */ | |
4067 | if (code == 0xcc | |
4068 | && (value & 0x8000)) | |
4069 | continue; | |
4070 | ||
4071 | /* Note that we've changed the relocation contents, etc. */ | |
4072 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4073 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 4074 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
4075 | |
4076 | /* Fix the opcode. */ | |
4077 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
4078 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
4079 | ||
4080 | /* Fix the relocation's type. */ | |
4081 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
4082 | (ELF32_R_TYPE (irel->r_info) |
4083 | == (int) R_MN10300_GOTOFF32) | |
4084 | ? R_MN10300_GOTOFF16 | |
4085 | : (ELF32_R_TYPE (irel->r_info) | |
4086 | == (int) R_MN10300_GOT32) | |
4087 | ? R_MN10300_GOT16 | |
4088 | : (ELF32_R_TYPE (irel->r_info) | |
4089 | == (int) R_MN10300_GOTPC32) | |
4090 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
4091 | R_MN10300_16); |
4092 | ||
4093 | /* Delete two bytes of data. */ | |
4094 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4095 | irel->r_offset + 2, 2)) | |
4096 | goto error_return; | |
4097 | ||
4098 | /* That will change things, so, we should relax again. | |
4099 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 4100 | *again = TRUE; |
252b5132 RH |
4101 | break; |
4102 | } | |
4103 | else if ((code & 0xf0) == 0x80 | |
4104 | || (code & 0xf0) == 0x90) | |
4105 | switch (code & 0xf3) | |
4106 | { | |
4107 | /* mov dn,(abs32) -> mov dn,(abs16) | |
4108 | movbu dn,(abs32) -> movbu dn,(abs16) | |
4109 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
4110 | case 0x81: | |
4111 | case 0x82: | |
4112 | case 0x83: | |
4113 | /* Note that we've changed the relocation contents, etc. */ | |
4114 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4115 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 4116 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
4117 | |
4118 | if ((code & 0xf3) == 0x81) | |
4119 | code = 0x01 + (code & 0x0c); | |
4120 | else if ((code & 0xf3) == 0x82) | |
4121 | code = 0x02 + (code & 0x0c); | |
4122 | else if ((code & 0xf3) == 0x83) | |
4123 | code = 0x03 + (code & 0x0c); | |
4124 | else | |
4125 | abort (); | |
4126 | ||
4127 | /* Fix the opcode. */ | |
4128 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
4129 | ||
4130 | /* Fix the relocation's type. */ | |
4131 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
4132 | (ELF32_R_TYPE (irel->r_info) |
4133 | == (int) R_MN10300_GOTOFF32) | |
4134 | ? R_MN10300_GOTOFF16 | |
4135 | : (ELF32_R_TYPE (irel->r_info) | |
4136 | == (int) R_MN10300_GOT32) | |
4137 | ? R_MN10300_GOT16 | |
4138 | : (ELF32_R_TYPE (irel->r_info) | |
4139 | == (int) R_MN10300_GOTPC32) | |
4140 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
4141 | R_MN10300_16); |
4142 | ||
4143 | /* The opcode got shorter too, so we have to fix the | |
4144 | addend and offset too! */ | |
4145 | irel->r_offset -= 1; | |
4146 | ||
4147 | /* Delete three bytes of data. */ | |
4148 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4149 | irel->r_offset + 1, 3)) | |
4150 | goto error_return; | |
4151 | ||
4152 | /* That will change things, so, we should relax again. | |
4153 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 4154 | *again = TRUE; |
252b5132 RH |
4155 | break; |
4156 | ||
4157 | /* mov am,(abs32) -> mov am,(abs16) | |
4158 | mov am,(d32,sp) -> mov am,(d16,sp) | |
4159 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
4160 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
4161 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
4162 | case 0x80: | |
4163 | case 0x90: | |
4164 | case 0x91: | |
4165 | case 0x92: | |
4166 | case 0x93: | |
2a0fa943 AO |
4167 | /* sp-based offsets are zero-extended. */ |
4168 | if (code >= 0x90 && code <= 0x93 | |
bfff1642 | 4169 | && (long) value < 0) |
2a0fa943 AO |
4170 | continue; |
4171 | ||
252b5132 RH |
4172 | /* Note that we've changed the relocation contents, etc. */ |
4173 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4174 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 4175 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
4176 | |
4177 | /* Fix the opcode. */ | |
4178 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
4179 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
4180 | ||
4181 | /* Fix the relocation's type. */ | |
4182 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
4183 | (ELF32_R_TYPE (irel->r_info) |
4184 | == (int) R_MN10300_GOTOFF32) | |
4185 | ? R_MN10300_GOTOFF16 | |
4186 | : (ELF32_R_TYPE (irel->r_info) | |
4187 | == (int) R_MN10300_GOT32) | |
4188 | ? R_MN10300_GOT16 | |
4189 | : (ELF32_R_TYPE (irel->r_info) | |
4190 | == (int) R_MN10300_GOTPC32) | |
4191 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
4192 | R_MN10300_16); |
4193 | ||
4194 | /* Delete two bytes of data. */ | |
4195 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4196 | irel->r_offset + 2, 2)) | |
4197 | goto error_return; | |
4198 | ||
4199 | /* That will change things, so, we should relax again. | |
4200 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 4201 | *again = TRUE; |
252b5132 RH |
4202 | break; |
4203 | } | |
4204 | else if ((code & 0xf0) < 0xf0) | |
4205 | switch (code & 0xfc) | |
4206 | { | |
4207 | /* mov imm32,dn -> mov imm16,dn | |
4208 | mov imm32,an -> mov imm16,an | |
4209 | mov (abs32),dn -> mov (abs16),dn | |
4210 | movbu (abs32),dn -> movbu (abs16),dn | |
4211 | movhu (abs32),dn -> movhu (abs16),dn */ | |
4212 | case 0xcc: | |
4213 | case 0xdc: | |
4214 | case 0xa4: | |
4215 | case 0xa8: | |
4216 | case 0xac: | |
4217 | /* Not safe if the high bit is on as relaxing may | |
4218 | move the value out of high mem and thus not fit | |
4219 | in a signed 16bit value. */ | |
4220 | if (code == 0xcc | |
4221 | && (value & 0x8000)) | |
4222 | continue; | |
4223 | ||
6746a626 NC |
4224 | /* "mov imm16, an" zero-extends the immediate. */ |
4225 | if ((code & 0xfc) == 0xdc | |
bfff1642 | 4226 | && (long) value < 0) |
2a0fa943 AO |
4227 | continue; |
4228 | ||
252b5132 RH |
4229 | /* Note that we've changed the relocation contents, etc. */ |
4230 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4231 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 4232 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
4233 | |
4234 | if ((code & 0xfc) == 0xcc) | |
4235 | code = 0x2c + (code & 0x03); | |
4236 | else if ((code & 0xfc) == 0xdc) | |
4237 | code = 0x24 + (code & 0x03); | |
4238 | else if ((code & 0xfc) == 0xa4) | |
4239 | code = 0x30 + (code & 0x03); | |
4240 | else if ((code & 0xfc) == 0xa8) | |
4241 | code = 0x34 + (code & 0x03); | |
4242 | else if ((code & 0xfc) == 0xac) | |
4243 | code = 0x38 + (code & 0x03); | |
4244 | else | |
4245 | abort (); | |
4246 | ||
4247 | /* Fix the opcode. */ | |
4248 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
4249 | ||
4250 | /* Fix the relocation's type. */ | |
4251 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
4252 | (ELF32_R_TYPE (irel->r_info) |
4253 | == (int) R_MN10300_GOTOFF32) | |
4254 | ? R_MN10300_GOTOFF16 | |
4255 | : (ELF32_R_TYPE (irel->r_info) | |
4256 | == (int) R_MN10300_GOT32) | |
4257 | ? R_MN10300_GOT16 | |
4258 | : (ELF32_R_TYPE (irel->r_info) | |
4259 | == (int) R_MN10300_GOTPC32) | |
4260 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
4261 | R_MN10300_16); |
4262 | ||
4263 | /* The opcode got shorter too, so we have to fix the | |
4264 | addend and offset too! */ | |
4265 | irel->r_offset -= 1; | |
4266 | ||
4267 | /* Delete three bytes of data. */ | |
4268 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4269 | irel->r_offset + 1, 3)) | |
4270 | goto error_return; | |
4271 | ||
4272 | /* That will change things, so, we should relax again. | |
4273 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 4274 | *again = TRUE; |
252b5132 RH |
4275 | break; |
4276 | ||
4277 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
4278 | mov (d32,sp),an -> mov (d16,sp),an |
4279 | mov (d32,sp),dn -> mov (d16,sp),dn | |
4280 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
4281 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
4282 | add imm32,dn -> add imm16,dn |
4283 | cmp imm32,dn -> cmp imm16,dn | |
4284 | add imm32,an -> add imm16,an | |
4285 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
4286 | and imm32,dn -> and imm16,dn |
4287 | or imm32,dn -> or imm16,dn | |
4288 | xor imm32,dn -> xor imm16,dn | |
4289 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
4290 | |
4291 | case 0xa0: | |
4292 | case 0xb0: | |
4293 | case 0xb1: | |
4294 | case 0xb2: | |
4295 | case 0xb3: | |
4296 | case 0xc0: | |
4297 | case 0xc8: | |
4298 | ||
4299 | case 0xd0: | |
4300 | case 0xd8: | |
4301 | case 0xe0: | |
4302 | case 0xe1: | |
4303 | case 0xe2: | |
4304 | case 0xe3: | |
2a0fa943 AO |
4305 | /* cmp imm16, an zero-extends the immediate. */ |
4306 | if (code == 0xdc | |
bfff1642 | 4307 | && (long) value < 0) |
2a0fa943 AO |
4308 | continue; |
4309 | ||
4310 | /* So do sp-based offsets. */ | |
4311 | if (code >= 0xb0 && code <= 0xb3 | |
bfff1642 | 4312 | && (long) value < 0) |
2a0fa943 AO |
4313 | continue; |
4314 | ||
252b5132 RH |
4315 | /* Note that we've changed the relocation contents, etc. */ |
4316 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4317 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 4318 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
4319 | |
4320 | /* Fix the opcode. */ | |
4321 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
4322 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
4323 | ||
4324 | /* Fix the relocation's type. */ | |
4325 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
4326 | (ELF32_R_TYPE (irel->r_info) |
4327 | == (int) R_MN10300_GOTOFF32) | |
4328 | ? R_MN10300_GOTOFF16 | |
4329 | : (ELF32_R_TYPE (irel->r_info) | |
4330 | == (int) R_MN10300_GOT32) | |
4331 | ? R_MN10300_GOT16 | |
4332 | : (ELF32_R_TYPE (irel->r_info) | |
4333 | == (int) R_MN10300_GOTPC32) | |
4334 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
4335 | R_MN10300_16); |
4336 | ||
4337 | /* Delete two bytes of data. */ | |
4338 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4339 | irel->r_offset + 2, 2)) | |
4340 | goto error_return; | |
4341 | ||
4342 | /* That will change things, so, we should relax again. | |
4343 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 4344 | *again = TRUE; |
252b5132 RH |
4345 | break; |
4346 | } | |
4347 | else if (code == 0xfe) | |
4348 | { | |
4349 | /* add imm32,sp -> add imm16,sp */ | |
4350 | ||
4351 | /* Note that we've changed the relocation contents, etc. */ | |
4352 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4353 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 4354 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
4355 | |
4356 | /* Fix the opcode. */ | |
4357 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
4358 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
4359 | ||
4360 | /* Fix the relocation's type. */ | |
4361 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
4362 | (ELF32_R_TYPE (irel->r_info) |
4363 | == (int) R_MN10300_GOT32) | |
4364 | ? R_MN10300_GOT16 | |
4365 | : (ELF32_R_TYPE (irel->r_info) | |
4366 | == (int) R_MN10300_GOTOFF32) | |
4367 | ? R_MN10300_GOTOFF16 | |
4368 | : (ELF32_R_TYPE (irel->r_info) | |
4369 | == (int) R_MN10300_GOTPC32) | |
4370 | ? R_MN10300_GOTPC16 : | |
010ac81f | 4371 | R_MN10300_16); |
252b5132 RH |
4372 | |
4373 | /* Delete two bytes of data. */ | |
4374 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
4375 | irel->r_offset + 2, 2)) | |
4376 | goto error_return; | |
4377 | ||
4378 | /* That will change things, so, we should relax again. | |
4379 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 4380 | *again = TRUE; |
252b5132 RH |
4381 | break; |
4382 | } | |
4383 | } | |
4384 | } | |
4385 | } | |
4386 | ||
6cdc0ccc AM |
4387 | if (isymbuf != NULL |
4388 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
4389 | { |
4390 | if (! link_info->keep_memory) | |
6cdc0ccc | 4391 | free (isymbuf); |
252b5132 RH |
4392 | else |
4393 | { | |
6cdc0ccc AM |
4394 | /* Cache the symbols for elf_link_input_bfd. */ |
4395 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 4396 | } |
9ad5cbcf AM |
4397 | } |
4398 | ||
6cdc0ccc AM |
4399 | if (contents != NULL |
4400 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
4401 | { |
4402 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
4403 | free (contents); |
4404 | else | |
252b5132 | 4405 | { |
6cdc0ccc AM |
4406 | /* Cache the section contents for elf_link_input_bfd. */ |
4407 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 4408 | } |
252b5132 RH |
4409 | } |
4410 | ||
6cdc0ccc AM |
4411 | if (internal_relocs != NULL |
4412 | && elf_section_data (sec)->relocs != internal_relocs) | |
4413 | free (internal_relocs); | |
4414 | ||
b34976b6 | 4415 | return TRUE; |
252b5132 RH |
4416 | |
4417 | error_return: | |
6cdc0ccc AM |
4418 | if (isymbuf != NULL |
4419 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
4420 | free (isymbuf); | |
4421 | if (contents != NULL | |
4422 | && elf_section_data (section)->this_hdr.contents != contents) | |
4423 | free (contents); | |
4424 | if (internal_relocs != NULL | |
4425 | && elf_section_data (section)->relocs != internal_relocs) | |
4426 | free (internal_relocs); | |
9ad5cbcf | 4427 | |
b34976b6 | 4428 | return FALSE; |
252b5132 RH |
4429 | } |
4430 | ||
252b5132 RH |
4431 | /* This is a version of bfd_generic_get_relocated_section_contents |
4432 | which uses mn10300_elf_relocate_section. */ | |
4433 | ||
4434 | static bfd_byte * | |
603b7257 NC |
4435 | mn10300_elf_get_relocated_section_contents (bfd *output_bfd, |
4436 | struct bfd_link_info *link_info, | |
4437 | struct bfd_link_order *link_order, | |
4438 | bfd_byte *data, | |
4439 | bfd_boolean relocatable, | |
4440 | asymbol **symbols) | |
252b5132 RH |
4441 | { |
4442 | Elf_Internal_Shdr *symtab_hdr; | |
4443 | asection *input_section = link_order->u.indirect.section; | |
4444 | bfd *input_bfd = input_section->owner; | |
4445 | asection **sections = NULL; | |
4446 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 4447 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
4448 | |
4449 | /* We only need to handle the case of relaxing, or of having a | |
4450 | particular set of section contents, specially. */ | |
1049f94e | 4451 | if (relocatable |
252b5132 RH |
4452 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
4453 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
4454 | link_order, data, | |
1049f94e | 4455 | relocatable, |
252b5132 RH |
4456 | symbols); |
4457 | ||
4458 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4459 | ||
4460 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
eea6121a | 4461 | (size_t) input_section->size); |
252b5132 RH |
4462 | |
4463 | if ((input_section->flags & SEC_RELOC) != 0 | |
4464 | && input_section->reloc_count > 0) | |
4465 | { | |
252b5132 | 4466 | asection **secpp; |
6cdc0ccc | 4467 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 4468 | bfd_size_type amt; |
252b5132 | 4469 | |
603b7257 NC |
4470 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, |
4471 | NULL, NULL, FALSE); | |
252b5132 RH |
4472 | if (internal_relocs == NULL) |
4473 | goto error_return; | |
4474 | ||
6cdc0ccc AM |
4475 | if (symtab_hdr->sh_info != 0) |
4476 | { | |
4477 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4478 | if (isymbuf == NULL) | |
4479 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4480 | symtab_hdr->sh_info, 0, | |
4481 | NULL, NULL, NULL); | |
4482 | if (isymbuf == NULL) | |
4483 | goto error_return; | |
4484 | } | |
252b5132 | 4485 | |
9ad5cbcf AM |
4486 | amt = symtab_hdr->sh_info; |
4487 | amt *= sizeof (asection *); | |
603b7257 | 4488 | sections = bfd_malloc (amt); |
9ad5cbcf | 4489 | if (sections == NULL && amt != 0) |
252b5132 RH |
4490 | goto error_return; |
4491 | ||
6cdc0ccc AM |
4492 | isymend = isymbuf + symtab_hdr->sh_info; |
4493 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
4494 | { |
4495 | asection *isec; | |
4496 | ||
6cdc0ccc | 4497 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 4498 | isec = bfd_und_section_ptr; |
6cdc0ccc | 4499 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 4500 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 4501 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
4502 | isec = bfd_com_section_ptr; |
4503 | else | |
6cdc0ccc | 4504 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
4505 | |
4506 | *secpp = isec; | |
4507 | } | |
4508 | ||
4509 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
603b7257 NC |
4510 | input_section, data, internal_relocs, |
4511 | isymbuf, sections)) | |
252b5132 RH |
4512 | goto error_return; |
4513 | ||
4514 | if (sections != NULL) | |
4515 | free (sections); | |
6cdc0ccc AM |
4516 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4517 | free (isymbuf); | |
252b5132 RH |
4518 | if (internal_relocs != elf_section_data (input_section)->relocs) |
4519 | free (internal_relocs); | |
252b5132 RH |
4520 | } |
4521 | ||
4522 | return data; | |
4523 | ||
4524 | error_return: | |
6cdc0ccc AM |
4525 | if (sections != NULL) |
4526 | free (sections); | |
4527 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
4528 | free (isymbuf); | |
252b5132 RH |
4529 | if (internal_relocs != NULL |
4530 | && internal_relocs != elf_section_data (input_section)->relocs) | |
4531 | free (internal_relocs); | |
252b5132 RH |
4532 | return NULL; |
4533 | } | |
4534 | ||
4535 | /* Assorted hash table functions. */ | |
4536 | ||
4537 | /* Initialize an entry in the link hash table. */ | |
4538 | ||
4539 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
4540 | ||
4541 | static struct bfd_hash_entry * | |
603b7257 NC |
4542 | elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry, |
4543 | struct bfd_hash_table *table, | |
4544 | const char *string) | |
252b5132 RH |
4545 | { |
4546 | struct elf32_mn10300_link_hash_entry *ret = | |
4547 | (struct elf32_mn10300_link_hash_entry *) entry; | |
4548 | ||
4549 | /* Allocate the structure if it has not already been allocated by a | |
4550 | subclass. */ | |
603b7257 NC |
4551 | if (ret == NULL) |
4552 | ret = (struct elf32_mn10300_link_hash_entry *) | |
4553 | bfd_hash_allocate (table, sizeof (* ret)); | |
4554 | if (ret == NULL) | |
252b5132 RH |
4555 | return (struct bfd_hash_entry *) ret; |
4556 | ||
4557 | /* Call the allocation method of the superclass. */ | |
603b7257 | 4558 | ret = (struct elf32_mn10300_link_hash_entry *) |
252b5132 | 4559 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
603b7257 NC |
4560 | table, string); |
4561 | if (ret != NULL) | |
252b5132 RH |
4562 | { |
4563 | ret->direct_calls = 0; | |
4564 | ret->stack_size = 0; | |
5354b572 | 4565 | ret->movm_args = 0; |
252b5132 RH |
4566 | ret->movm_stack_size = 0; |
4567 | ret->flags = 0; | |
eb13e63f | 4568 | ret->value = 0; |
0a22ae8e | 4569 | ret->tls_type = GOT_UNKNOWN; |
252b5132 RH |
4570 | } |
4571 | ||
4572 | return (struct bfd_hash_entry *) ret; | |
4573 | } | |
4574 | ||
0a22ae8e NC |
4575 | static void |
4576 | _bfd_mn10300_copy_indirect_symbol (struct bfd_link_info * info, | |
4577 | struct elf_link_hash_entry * dir, | |
4578 | struct elf_link_hash_entry * ind) | |
4579 | { | |
4580 | struct elf32_mn10300_link_hash_entry * edir; | |
4581 | struct elf32_mn10300_link_hash_entry * eind; | |
4582 | ||
4583 | edir = elf_mn10300_hash_entry (dir); | |
4584 | eind = elf_mn10300_hash_entry (ind); | |
4585 | ||
4586 | if (ind->root.type == bfd_link_hash_indirect | |
4587 | && dir->got.refcount <= 0) | |
4588 | { | |
4589 | edir->tls_type = eind->tls_type; | |
4590 | eind->tls_type = GOT_UNKNOWN; | |
4591 | } | |
4592 | edir->direct_calls = eind->direct_calls; | |
4593 | edir->stack_size = eind->stack_size; | |
4594 | edir->movm_args = eind->movm_args; | |
4595 | edir->movm_stack_size = eind->movm_stack_size; | |
4596 | edir->flags = eind->flags; | |
4597 | ||
4598 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
4599 | } | |
4600 | ||
68faa637 AM |
4601 | /* Destroy an mn10300 ELF linker hash table. */ |
4602 | ||
4603 | static void | |
d495ab0d | 4604 | elf32_mn10300_link_hash_table_free (bfd *obfd) |
68faa637 AM |
4605 | { |
4606 | struct elf32_mn10300_link_hash_table *ret | |
d495ab0d | 4607 | = (struct elf32_mn10300_link_hash_table *) obfd->link.hash; |
68faa637 | 4608 | |
d495ab0d AM |
4609 | obfd->link.hash = &ret->static_hash_table->root.root; |
4610 | _bfd_elf_link_hash_table_free (obfd); | |
4611 | obfd->is_linker_output = TRUE; | |
4612 | obfd->link.hash = &ret->root.root; | |
4613 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4614 | } |
4615 | ||
252b5132 RH |
4616 | /* Create an mn10300 ELF linker hash table. */ |
4617 | ||
4618 | static struct bfd_link_hash_table * | |
603b7257 | 4619 | elf32_mn10300_link_hash_table_create (bfd *abfd) |
252b5132 RH |
4620 | { |
4621 | struct elf32_mn10300_link_hash_table *ret; | |
603b7257 | 4622 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 4623 | |
7bf52ea2 | 4624 | ret = bfd_zmalloc (amt); |
603b7257 | 4625 | if (ret == NULL) |
252b5132 RH |
4626 | return NULL; |
4627 | ||
dc810e39 | 4628 | amt = sizeof (struct elf_link_hash_table); |
7bf52ea2 | 4629 | ret->static_hash_table = bfd_zmalloc (amt); |
252b5132 RH |
4630 | if (ret->static_hash_table == NULL) |
4631 | { | |
e2d34d7d | 4632 | free (ret); |
252b5132 RH |
4633 | return NULL; |
4634 | } | |
4635 | ||
66eb6687 AM |
4636 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
4637 | elf32_mn10300_link_hash_newfunc, | |
4dfe6ac6 NC |
4638 | sizeof (struct elf32_mn10300_link_hash_entry), |
4639 | MN10300_ELF_DATA)) | |
252b5132 | 4640 | { |
e2d34d7d DJ |
4641 | free (ret->static_hash_table); |
4642 | free (ret); | |
252b5132 RH |
4643 | return NULL; |
4644 | } | |
d495ab0d AM |
4645 | |
4646 | abfd->is_linker_output = FALSE; | |
4647 | abfd->link.hash = NULL; | |
4648 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
4649 | elf32_mn10300_link_hash_newfunc, | |
4650 | sizeof (struct elf32_mn10300_link_hash_entry), | |
4651 | MN10300_ELF_DATA)) | |
4652 | { | |
4653 | abfd->is_linker_output = TRUE; | |
4654 | abfd->link.hash = &ret->static_hash_table->root.root; | |
4655 | _bfd_elf_link_hash_table_free (abfd); | |
4656 | free (ret); | |
4657 | return NULL; | |
4658 | } | |
4659 | ret->root.root.hash_table_free = elf32_mn10300_link_hash_table_free; | |
4660 | ||
4661 | ret->tls_ldm_got.offset = -1; | |
4662 | ||
603b7257 | 4663 | return & ret->root.root; |
252b5132 RH |
4664 | } |
4665 | ||
dc810e39 | 4666 | static unsigned long |
603b7257 | 4667 | elf_mn10300_mach (flagword flags) |
252b5132 RH |
4668 | { |
4669 | switch (flags & EF_MN10300_MACH) | |
4670 | { | |
010ac81f KH |
4671 | case E_MN10300_MACH_MN10300: |
4672 | default: | |
4673 | return bfd_mach_mn10300; | |
252b5132 | 4674 | |
010ac81f KH |
4675 | case E_MN10300_MACH_AM33: |
4676 | return bfd_mach_am33; | |
b08fa4d3 AO |
4677 | |
4678 | case E_MN10300_MACH_AM33_2: | |
4679 | return bfd_mach_am33_2; | |
252b5132 RH |
4680 | } |
4681 | } | |
4682 | ||
4683 | /* The final processing done just before writing out a MN10300 ELF object | |
4684 | file. This gets the MN10300 architecture right based on the machine | |
4685 | number. */ | |
4686 | ||
603b7257 NC |
4687 | static void |
4688 | _bfd_mn10300_elf_final_write_processing (bfd *abfd, | |
4689 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 RH |
4690 | { |
4691 | unsigned long val; | |
252b5132 RH |
4692 | |
4693 | switch (bfd_get_mach (abfd)) | |
4694 | { | |
010ac81f KH |
4695 | default: |
4696 | case bfd_mach_mn10300: | |
4697 | val = E_MN10300_MACH_MN10300; | |
4698 | break; | |
4699 | ||
4700 | case bfd_mach_am33: | |
4701 | val = E_MN10300_MACH_AM33; | |
4702 | break; | |
b08fa4d3 AO |
4703 | |
4704 | case bfd_mach_am33_2: | |
4705 | val = E_MN10300_MACH_AM33_2; | |
4706 | break; | |
252b5132 RH |
4707 | } |
4708 | ||
4709 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
4710 | elf_elfheader (abfd)->e_flags |= val; | |
4711 | } | |
4712 | ||
603b7257 NC |
4713 | static bfd_boolean |
4714 | _bfd_mn10300_elf_object_p (bfd *abfd) | |
252b5132 RH |
4715 | { |
4716 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 4717 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 4718 | return TRUE; |
252b5132 RH |
4719 | } |
4720 | ||
4721 | /* Merge backend specific data from an object file to the output | |
4722 | object file when linking. */ | |
4723 | ||
603b7257 NC |
4724 | static bfd_boolean |
4725 | _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
252b5132 RH |
4726 | { |
4727 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4728 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4729 | return TRUE; |
252b5132 RH |
4730 | |
4731 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4732 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
4733 | { | |
4734 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3b36f7e6 AM |
4735 | bfd_get_mach (ibfd))) |
4736 | return FALSE; | |
252b5132 RH |
4737 | } |
4738 | ||
b34976b6 | 4739 | return TRUE; |
252b5132 RH |
4740 | } |
4741 | ||
603b7257 NC |
4742 | #define PLT0_ENTRY_SIZE 15 |
4743 | #define PLT_ENTRY_SIZE 20 | |
4744 | #define PIC_PLT_ENTRY_SIZE 24 | |
03a12831 AO |
4745 | |
4746 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
4747 | { | |
4748 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
4749 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
4750 | 0xf0, 0xf4, /* jmp (a0) */ | |
4751 | }; | |
4752 | ||
4753 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
4754 | { | |
4755 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
4756 | 0xf0, 0xf4, /* jmp (a0) */ | |
4757 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4758 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
4759 | }; | |
4760 | ||
4761 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
4762 | { | |
4763 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
4764 | 0xf0, 0xf4, /* jmp (a0) */ | |
4765 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4766 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
4767 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
4768 | 0xf0, 0xf4, /* jmp (a0) */ | |
4769 | }; | |
4770 | ||
4771 | /* Return size of the first PLT entry. */ | |
4772 | #define elf_mn10300_sizeof_plt0(info) \ | |
4773 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
4774 | ||
4775 | /* Return size of a PLT entry. */ | |
4776 | #define elf_mn10300_sizeof_plt(info) \ | |
4777 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
4778 | ||
4779 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
4780 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
4781 | ||
4782 | /* Return offset of the linker in PLT0 entry. */ | |
4783 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
4784 | ||
4785 | /* Return offset of the GOT id in PLT0 entry. */ | |
4786 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
4787 | ||
603b7257 | 4788 | /* Return offset of the temporary in PLT entry. */ |
03a12831 AO |
4789 | #define elf_mn10300_plt_temp_offset(info) 8 |
4790 | ||
4791 | /* Return offset of the symbol in PLT entry. */ | |
4792 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
4793 | ||
4794 | /* Return offset of the relocation in PLT entry. */ | |
4795 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
4796 | ||
4797 | /* The name of the dynamic interpreter. This is put in the .interp | |
4798 | section. */ | |
4799 | ||
4800 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
4801 | ||
4802 | /* Create dynamic sections when linking against a dynamic object. */ | |
4803 | ||
4804 | static bfd_boolean | |
603b7257 | 4805 | _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
03a12831 AO |
4806 | { |
4807 | flagword flags; | |
4808 | asection * s; | |
9c5bfbb7 | 4809 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
3d4d4302 | 4810 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
03a12831 AO |
4811 | int ptralign = 0; |
4812 | ||
4813 | switch (bed->s->arch_size) | |
4814 | { | |
4815 | case 32: | |
4816 | ptralign = 2; | |
4817 | break; | |
4818 | ||
4819 | case 64: | |
4820 | ptralign = 3; | |
4821 | break; | |
4822 | ||
4823 | default: | |
4824 | bfd_set_error (bfd_error_bad_value); | |
4825 | return FALSE; | |
4826 | } | |
4827 | ||
4828 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
4829 | .rel[a].bss sections. */ | |
03a12831 AO |
4830 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4831 | | SEC_LINKER_CREATED); | |
4832 | ||
3d4d4302 AM |
4833 | s = bfd_make_section_anyway_with_flags (abfd, |
4834 | (bed->default_use_rela_p | |
4835 | ? ".rela.plt" : ".rel.plt"), | |
4836 | flags | SEC_READONLY); | |
4837 | htab->root.srelplt = s; | |
03a12831 | 4838 | if (s == NULL |
03a12831 AO |
4839 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4840 | return FALSE; | |
4841 | ||
4842 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
4843 | return FALSE; | |
4844 | ||
03a12831 AO |
4845 | if (bed->want_dynbss) |
4846 | { | |
4847 | /* The .dynbss section is a place to put symbols which are defined | |
4848 | by dynamic objects, are referenced by regular objects, and are | |
4849 | not functions. We must allocate space for them in the process | |
4850 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
4851 | initialize them at run time. The linker script puts the .dynbss | |
4852 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
4853 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
4854 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3496cb2a | 4855 | if (s == NULL) |
03a12831 AO |
4856 | return FALSE; |
4857 | ||
4858 | /* The .rel[a].bss section holds copy relocs. This section is not | |
4859 | normally needed. We need to create it here, though, so that the | |
4860 | linker will map it to an output section. We can't just create it | |
4861 | only if we need it, because we will not know whether we need it | |
4862 | until we have seen all the input files, and the first time the | |
4863 | main linker code calls BFD after examining all the input files | |
4864 | (size_dynamic_sections) the input sections have already been | |
4865 | mapped to the output sections. If the section turns out not to | |
4866 | be needed, we can discard it later. We will never need this | |
4867 | section when generating a shared object, since they do not use | |
4868 | copy relocs. */ | |
4869 | if (! info->shared) | |
4870 | { | |
3d4d4302 AM |
4871 | s = bfd_make_section_anyway_with_flags (abfd, |
4872 | (bed->default_use_rela_p | |
4873 | ? ".rela.bss" : ".rel.bss"), | |
4874 | flags | SEC_READONLY); | |
03a12831 | 4875 | if (s == NULL |
03a12831 AO |
4876 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4877 | return FALSE; | |
4878 | } | |
4879 | } | |
4880 | ||
4881 | return TRUE; | |
4882 | } | |
4883 | \f | |
4884 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4885 | regular object. The current definition is in some section of the | |
4886 | dynamic object, but we're not including those sections. We have to | |
4887 | change the definition to something the rest of the link can | |
4888 | understand. */ | |
4889 | ||
4890 | static bfd_boolean | |
603b7257 NC |
4891 | _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info, |
4892 | struct elf_link_hash_entry * h) | |
03a12831 | 4893 | { |
3d4d4302 | 4894 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
03a12831 AO |
4895 | bfd * dynobj; |
4896 | asection * s; | |
03a12831 | 4897 | |
3d4d4302 | 4898 | dynobj = htab->root.dynobj; |
03a12831 AO |
4899 | |
4900 | /* Make sure we know what is going on here. */ | |
4901 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4902 | && (h->needs_plt |
f6e332e6 | 4903 | || h->u.weakdef != NULL |
f5385ebf AM |
4904 | || (h->def_dynamic |
4905 | && h->ref_regular | |
4906 | && !h->def_regular))); | |
03a12831 AO |
4907 | |
4908 | /* If this is a function, put it in the procedure linkage table. We | |
4909 | will fill in the contents of the procedure linkage table later, | |
4910 | when we know the address of the .got section. */ | |
4911 | if (h->type == STT_FUNC | |
f5385ebf | 4912 | || h->needs_plt) |
03a12831 AO |
4913 | { |
4914 | if (! info->shared | |
f5385ebf AM |
4915 | && !h->def_dynamic |
4916 | && !h->ref_dynamic) | |
03a12831 AO |
4917 | { |
4918 | /* This case can occur if we saw a PLT reloc in an input | |
4919 | file, but the symbol was never referred to by a dynamic | |
4920 | object. In such a case, we don't actually need to build | |
4921 | a procedure linkage table, and we can just do a REL32 | |
4922 | reloc instead. */ | |
f5385ebf | 4923 | BFD_ASSERT (h->needs_plt); |
03a12831 AO |
4924 | return TRUE; |
4925 | } | |
4926 | ||
4927 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4928 | if (h->dynindx == -1) | |
4929 | { | |
c152c796 | 4930 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
4931 | return FALSE; |
4932 | } | |
4933 | ||
3d4d4302 | 4934 | s = htab->root.splt; |
03a12831 AO |
4935 | BFD_ASSERT (s != NULL); |
4936 | ||
4937 | /* If this is the first .plt entry, make room for the special | |
4938 | first entry. */ | |
eea6121a AM |
4939 | if (s->size == 0) |
4940 | s->size += elf_mn10300_sizeof_plt0 (info); | |
03a12831 AO |
4941 | |
4942 | /* If this symbol is not defined in a regular file, and we are | |
4943 | not generating a shared library, then set the symbol to this | |
4944 | location in the .plt. This is required to make function | |
4945 | pointers compare as equal between the normal executable and | |
4946 | the shared library. */ | |
4947 | if (! info->shared | |
f5385ebf | 4948 | && !h->def_regular) |
03a12831 AO |
4949 | { |
4950 | h->root.u.def.section = s; | |
eea6121a | 4951 | h->root.u.def.value = s->size; |
03a12831 AO |
4952 | } |
4953 | ||
eea6121a | 4954 | h->plt.offset = s->size; |
03a12831 AO |
4955 | |
4956 | /* Make room for this entry. */ | |
eea6121a | 4957 | s->size += elf_mn10300_sizeof_plt (info); |
03a12831 AO |
4958 | |
4959 | /* We also need to make an entry in the .got.plt section, which | |
4960 | will be placed in the .got section by the linker script. */ | |
3d4d4302 | 4961 | s = htab->root.sgotplt; |
03a12831 | 4962 | BFD_ASSERT (s != NULL); |
eea6121a | 4963 | s->size += 4; |
03a12831 AO |
4964 | |
4965 | /* We also need to make an entry in the .rela.plt section. */ | |
3d4d4302 | 4966 | s = bfd_get_linker_section (dynobj, ".rela.plt"); |
03a12831 | 4967 | BFD_ASSERT (s != NULL); |
eea6121a | 4968 | s->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
4969 | |
4970 | return TRUE; | |
4971 | } | |
4972 | ||
4973 | /* If this is a weak symbol, and there is a real definition, the | |
4974 | processor independent code will have arranged for us to see the | |
4975 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4976 | if (h->u.weakdef != NULL) |
03a12831 | 4977 | { |
f6e332e6 AM |
4978 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4979 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4980 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4981 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
03a12831 AO |
4982 | return TRUE; |
4983 | } | |
4984 | ||
4985 | /* This is a reference to a symbol defined by a dynamic object which | |
4986 | is not a function. */ | |
4987 | ||
4988 | /* If we are creating a shared library, we must presume that the | |
4989 | only references to the symbol are via the global offset table. | |
4990 | For such cases we need not do anything here; the relocations will | |
4991 | be handled correctly by relocate_section. */ | |
4992 | if (info->shared) | |
4993 | return TRUE; | |
4994 | ||
4995 | /* If there are no references to this symbol that do not use the | |
4996 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 4997 | if (!h->non_got_ref) |
03a12831 AO |
4998 | return TRUE; |
4999 | ||
5000 | /* We must allocate the symbol in our .dynbss section, which will | |
5001 | become part of the .bss section of the executable. There will be | |
5002 | an entry for this symbol in the .dynsym section. The dynamic | |
5003 | object will contain position independent code, so all references | |
5004 | from the dynamic object to this symbol will go through the global | |
5005 | offset table. The dynamic linker will use the .dynsym entry to | |
5006 | determine the address it must put in the global offset table, so | |
5007 | both the dynamic object and the regular object will refer to the | |
5008 | same memory location for the variable. */ | |
5009 | ||
3d4d4302 | 5010 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
03a12831 AO |
5011 | BFD_ASSERT (s != NULL); |
5012 | ||
5013 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
5014 | copy the initial value out of the dynamic object and into the | |
5015 | runtime process image. We need to remember the offset into the | |
5016 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 5017 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
03a12831 AO |
5018 | { |
5019 | asection * srel; | |
5020 | ||
3d4d4302 | 5021 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
03a12831 | 5022 | BFD_ASSERT (srel != NULL); |
eea6121a | 5023 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 5024 | h->needs_copy = 1; |
03a12831 AO |
5025 | } |
5026 | ||
6cabe1ea | 5027 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
03a12831 AO |
5028 | } |
5029 | ||
03a12831 AO |
5030 | /* Set the sizes of the dynamic sections. */ |
5031 | ||
5032 | static bfd_boolean | |
603b7257 NC |
5033 | _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd, |
5034 | struct bfd_link_info * info) | |
03a12831 | 5035 | { |
0a22ae8e | 5036 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
03a12831 AO |
5037 | bfd * dynobj; |
5038 | asection * s; | |
5039 | bfd_boolean plt; | |
5040 | bfd_boolean relocs; | |
5041 | bfd_boolean reltext; | |
5042 | ||
3d4d4302 | 5043 | dynobj = htab->root.dynobj; |
03a12831 AO |
5044 | BFD_ASSERT (dynobj != NULL); |
5045 | ||
5046 | if (elf_hash_table (info)->dynamic_sections_created) | |
5047 | { | |
5048 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 5049 | if (info->executable) |
03a12831 | 5050 | { |
3d4d4302 | 5051 | s = bfd_get_linker_section (dynobj, ".interp"); |
03a12831 | 5052 | BFD_ASSERT (s != NULL); |
eea6121a | 5053 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
03a12831 AO |
5054 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
5055 | } | |
5056 | } | |
5057 | else | |
5058 | { | |
5059 | /* We may have created entries in the .rela.got section. | |
5060 | However, if we are not creating the dynamic sections, we will | |
5061 | not actually use these entries. Reset the size of .rela.got, | |
5062 | which will cause it to get stripped from the output file | |
5063 | below. */ | |
3d4d4302 | 5064 | s = htab->root.sgot; |
03a12831 | 5065 | if (s != NULL) |
eea6121a | 5066 | s->size = 0; |
03a12831 AO |
5067 | } |
5068 | ||
0a22ae8e NC |
5069 | if (htab->tls_ldm_got.refcount > 0) |
5070 | { | |
3d4d4302 | 5071 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
0a22ae8e NC |
5072 | BFD_ASSERT (s != NULL); |
5073 | s->size += sizeof (Elf32_External_Rela); | |
5074 | } | |
5075 | ||
03a12831 AO |
5076 | /* The check_relocs and adjust_dynamic_symbol entry points have |
5077 | determined the sizes of the various dynamic sections. Allocate | |
5078 | memory for them. */ | |
5079 | plt = FALSE; | |
5080 | relocs = FALSE; | |
5081 | reltext = FALSE; | |
5082 | for (s = dynobj->sections; s != NULL; s = s->next) | |
5083 | { | |
5084 | const char * name; | |
03a12831 AO |
5085 | |
5086 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5087 | continue; | |
5088 | ||
5089 | /* It's OK to base decisions on the section name, because none | |
5090 | of the dynobj section names depend upon the input files. */ | |
5091 | name = bfd_get_section_name (dynobj, s); | |
5092 | ||
603b7257 | 5093 | if (streq (name, ".plt")) |
03a12831 | 5094 | { |
c456f082 AM |
5095 | /* Remember whether there is a PLT. */ |
5096 | plt = s->size != 0; | |
03a12831 | 5097 | } |
0112cd26 | 5098 | else if (CONST_STRNEQ (name, ".rela")) |
03a12831 | 5099 | { |
c456f082 | 5100 | if (s->size != 0) |
03a12831 AO |
5101 | { |
5102 | asection * target; | |
5103 | ||
5104 | /* Remember whether there are any reloc sections other | |
5105 | than .rela.plt. */ | |
603b7257 | 5106 | if (! streq (name, ".rela.plt")) |
03a12831 AO |
5107 | { |
5108 | const char * outname; | |
5109 | ||
5110 | relocs = TRUE; | |
5111 | ||
5112 | /* If this relocation section applies to a read only | |
5113 | section, then we probably need a DT_TEXTREL | |
5114 | entry. The entries in the .rela.plt section | |
5115 | really apply to the .got section, which we | |
5116 | created ourselves and so know is not readonly. */ | |
5117 | outname = bfd_get_section_name (output_bfd, | |
5118 | s->output_section); | |
5119 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
5120 | if (target != NULL | |
5121 | && (target->flags & SEC_READONLY) != 0 | |
5122 | && (target->flags & SEC_ALLOC) != 0) | |
5123 | reltext = TRUE; | |
5124 | } | |
5125 | ||
5126 | /* We use the reloc_count field as a counter if we need | |
5127 | to copy relocs into the output file. */ | |
5128 | s->reloc_count = 0; | |
5129 | } | |
5130 | } | |
0112cd26 | 5131 | else if (! CONST_STRNEQ (name, ".got") |
603b7257 | 5132 | && ! streq (name, ".dynbss")) |
03a12831 AO |
5133 | /* It's not one of our sections, so don't allocate space. */ |
5134 | continue; | |
5135 | ||
c456f082 | 5136 | if (s->size == 0) |
03a12831 | 5137 | { |
c456f082 AM |
5138 | /* If we don't need this section, strip it from the |
5139 | output file. This is mostly to handle .rela.bss and | |
5140 | .rela.plt. We must create both sections in | |
5141 | create_dynamic_sections, because they must be created | |
5142 | before the linker maps input sections to output | |
5143 | sections. The linker does that before | |
5144 | adjust_dynamic_symbol is called, and it is that | |
5145 | function which decides whether anything needs to go | |
5146 | into these sections. */ | |
8423293d | 5147 | s->flags |= SEC_EXCLUDE; |
03a12831 AO |
5148 | continue; |
5149 | } | |
5150 | ||
c456f082 AM |
5151 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5152 | continue; | |
5153 | ||
03a12831 AO |
5154 | /* Allocate memory for the section contents. We use bfd_zalloc |
5155 | here in case unused entries are not reclaimed before the | |
5156 | section's contents are written out. This should not happen, | |
5157 | but this way if it does, we get a R_MN10300_NONE reloc | |
5158 | instead of garbage. */ | |
603b7257 | 5159 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 5160 | if (s->contents == NULL) |
03a12831 AO |
5161 | return FALSE; |
5162 | } | |
5163 | ||
5164 | if (elf_hash_table (info)->dynamic_sections_created) | |
5165 | { | |
5166 | /* Add some entries to the .dynamic section. We fill in the | |
5167 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
5168 | but we must add the entries now so that we get the correct | |
5169 | size for the .dynamic section. The DT_DEBUG entry is filled | |
5170 | in by the dynamic linker and used by the debugger. */ | |
5171 | if (! info->shared) | |
5172 | { | |
5a580b3a | 5173 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) |
03a12831 AO |
5174 | return FALSE; |
5175 | } | |
5176 | ||
5177 | if (plt) | |
5178 | { | |
5a580b3a AM |
5179 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
5180 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
5181 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
5182 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
03a12831 AO |
5183 | return FALSE; |
5184 | } | |
5185 | ||
5186 | if (relocs) | |
5187 | { | |
5a580b3a AM |
5188 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
5189 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
5190 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
5191 | sizeof (Elf32_External_Rela))) | |
03a12831 AO |
5192 | return FALSE; |
5193 | } | |
5194 | ||
5195 | if (reltext) | |
5196 | { | |
5a580b3a | 5197 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
03a12831 AO |
5198 | return FALSE; |
5199 | } | |
5200 | } | |
5201 | ||
5202 | return TRUE; | |
5203 | } | |
5204 | ||
5205 | /* Finish up dynamic symbol handling. We set the contents of various | |
5206 | dynamic sections here. */ | |
5207 | ||
5208 | static bfd_boolean | |
603b7257 NC |
5209 | _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd, |
5210 | struct bfd_link_info * info, | |
5211 | struct elf_link_hash_entry * h, | |
5212 | Elf_Internal_Sym * sym) | |
03a12831 | 5213 | { |
3d4d4302 | 5214 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
03a12831 AO |
5215 | bfd * dynobj; |
5216 | ||
3d4d4302 | 5217 | dynobj = htab->root.dynobj; |
03a12831 AO |
5218 | |
5219 | if (h->plt.offset != (bfd_vma) -1) | |
5220 | { | |
5221 | asection * splt; | |
5222 | asection * sgot; | |
5223 | asection * srel; | |
5224 | bfd_vma plt_index; | |
5225 | bfd_vma got_offset; | |
5226 | Elf_Internal_Rela rel; | |
5227 | ||
5228 | /* This symbol has an entry in the procedure linkage table. Set | |
5229 | it up. */ | |
5230 | ||
5231 | BFD_ASSERT (h->dynindx != -1); | |
5232 | ||
3d4d4302 AM |
5233 | splt = htab->root.splt; |
5234 | sgot = htab->root.sgotplt; | |
5235 | srel = bfd_get_linker_section (dynobj, ".rela.plt"); | |
03a12831 AO |
5236 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
5237 | ||
5238 | /* Get the index in the procedure linkage table which | |
5239 | corresponds to this symbol. This is the index of this symbol | |
5240 | in all the symbols for which we are making plt entries. The | |
5241 | first entry in the procedure linkage table is reserved. */ | |
5242 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
5243 | / elf_mn10300_sizeof_plt (info)); | |
5244 | ||
5245 | /* Get the offset into the .got table of the entry that | |
5246 | corresponds to this function. Each .got entry is 4 bytes. | |
5247 | The first three are reserved. */ | |
5248 | got_offset = (plt_index + 3) * 4; | |
5249 | ||
5250 | /* Fill in the entry in the procedure linkage table. */ | |
5251 | if (! info->shared) | |
5252 | { | |
5253 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
5254 | elf_mn10300_sizeof_plt (info)); | |
5255 | bfd_put_32 (output_bfd, | |
5256 | (sgot->output_section->vma | |
5257 | + sgot->output_offset | |
5258 | + got_offset), | |
5259 | (splt->contents + h->plt.offset | |
5260 | + elf_mn10300_plt_symbol_offset (info))); | |
5261 | ||
5262 | bfd_put_32 (output_bfd, | |
5263 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
5264 | (splt->contents + h->plt.offset | |
5265 | + elf_mn10300_plt_plt0_offset (info))); | |
5266 | } | |
5267 | else | |
5268 | { | |
5269 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
5270 | elf_mn10300_sizeof_plt (info)); | |
5271 | ||
5272 | bfd_put_32 (output_bfd, got_offset, | |
5273 | (splt->contents + h->plt.offset | |
5274 | + elf_mn10300_plt_symbol_offset (info))); | |
5275 | } | |
5276 | ||
5277 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
5278 | (splt->contents + h->plt.offset | |
5279 | + elf_mn10300_plt_reloc_offset (info))); | |
5280 | ||
5281 | /* Fill in the entry in the global offset table. */ | |
5282 | bfd_put_32 (output_bfd, | |
5283 | (splt->output_section->vma | |
5284 | + splt->output_offset | |
5285 | + h->plt.offset | |
5286 | + elf_mn10300_plt_temp_offset (info)), | |
5287 | sgot->contents + got_offset); | |
5288 | ||
5289 | /* Fill in the entry in the .rela.plt section. */ | |
5290 | rel.r_offset = (sgot->output_section->vma | |
5291 | + sgot->output_offset | |
5292 | + got_offset); | |
5293 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
5294 | rel.r_addend = 0; | |
5295 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
5296 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
5297 | + plt_index)); | |
03a12831 | 5298 | |
f5385ebf | 5299 | if (!h->def_regular) |
03a12831 AO |
5300 | /* Mark the symbol as undefined, rather than as defined in |
5301 | the .plt section. Leave the value alone. */ | |
5302 | sym->st_shndx = SHN_UNDEF; | |
5303 | } | |
5304 | ||
5305 | if (h->got.offset != (bfd_vma) -1) | |
5306 | { | |
5307 | asection * sgot; | |
5308 | asection * srel; | |
5309 | Elf_Internal_Rela rel; | |
5310 | ||
5311 | /* This symbol has an entry in the global offset table. Set it up. */ | |
3d4d4302 AM |
5312 | sgot = htab->root.sgot; |
5313 | srel = bfd_get_linker_section (dynobj, ".rela.got"); | |
03a12831 AO |
5314 | BFD_ASSERT (sgot != NULL && srel != NULL); |
5315 | ||
5316 | rel.r_offset = (sgot->output_section->vma | |
5317 | + sgot->output_offset | |
603b7257 | 5318 | + (h->got.offset & ~1)); |
03a12831 | 5319 | |
0a22ae8e | 5320 | switch (elf_mn10300_hash_entry (h)->tls_type) |
03a12831 | 5321 | { |
0a22ae8e | 5322 | case GOT_TLS_GD: |
03a12831 | 5323 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
0a22ae8e NC |
5324 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset + 4); |
5325 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_DTPMOD); | |
5326 | rel.r_addend = 0; | |
5327 | bfd_elf32_swap_reloca_out (output_bfd, & rel, | |
5328 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents | |
5329 | + srel->reloc_count)); | |
5330 | ++ srel->reloc_count; | |
5331 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_DTPOFF); | |
5332 | rel.r_offset += 4; | |
03a12831 | 5333 | rel.r_addend = 0; |
0a22ae8e NC |
5334 | break; |
5335 | ||
5336 | case GOT_TLS_IE: | |
5337 | /* We originally stored the addend in the GOT, but at this | |
5338 | point, we want to move it to the reloc instead as that's | |
5339 | where the dynamic linker wants it. */ | |
5340 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + h->got.offset); | |
5341 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
5342 | if (h->dynindx == -1) | |
5343 | rel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_TPOFF); | |
5344 | else | |
5345 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_TPOFF); | |
5346 | break; | |
5347 | ||
5348 | default: | |
5349 | /* If this is a -Bsymbolic link, and the symbol is defined | |
5350 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
5351 | the symbol was forced to be local because of a version file. | |
5352 | The entry in the global offset table will already have been | |
5353 | initialized in the relocate_section function. */ | |
5354 | if (info->shared | |
5355 | && (info->symbolic || h->dynindx == -1) | |
5356 | && h->def_regular) | |
5357 | { | |
5358 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
5359 | rel.r_addend = (h->root.u.def.value | |
5360 | + h->root.u.def.section->output_section->vma | |
5361 | + h->root.u.def.section->output_offset); | |
5362 | } | |
5363 | else | |
5364 | { | |
5365 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
5366 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
5367 | rel.r_addend = 0; | |
5368 | } | |
03a12831 AO |
5369 | } |
5370 | ||
0a22ae8e NC |
5371 | if (ELF32_R_TYPE (rel.r_info) != R_MN10300_NONE) |
5372 | { | |
5373 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
5374 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents | |
5375 | + srel->reloc_count)); | |
5376 | ++ srel->reloc_count; | |
5377 | } | |
03a12831 AO |
5378 | } |
5379 | ||
f5385ebf | 5380 | if (h->needs_copy) |
03a12831 AO |
5381 | { |
5382 | asection * s; | |
5383 | Elf_Internal_Rela rel; | |
5384 | ||
5385 | /* This symbol needs a copy reloc. Set it up. */ | |
5386 | BFD_ASSERT (h->dynindx != -1 | |
5387 | && (h->root.type == bfd_link_hash_defined | |
5388 | || h->root.type == bfd_link_hash_defweak)); | |
5389 | ||
3d4d4302 | 5390 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
03a12831 AO |
5391 | BFD_ASSERT (s != NULL); |
5392 | ||
5393 | rel.r_offset = (h->root.u.def.value | |
5394 | + h->root.u.def.section->output_section->vma | |
5395 | + h->root.u.def.section->output_offset); | |
5396 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
5397 | rel.r_addend = 0; | |
603b7257 | 5398 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
560e09e9 NC |
5399 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
5400 | + s->reloc_count)); | |
03a12831 AO |
5401 | ++ s->reloc_count; |
5402 | } | |
5403 | ||
5404 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
9637f6ef | 5405 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 5406 | || h == elf_hash_table (info)->hgot) |
03a12831 AO |
5407 | sym->st_shndx = SHN_ABS; |
5408 | ||
5409 | return TRUE; | |
5410 | } | |
5411 | ||
5412 | /* Finish up the dynamic sections. */ | |
5413 | ||
5414 | static bfd_boolean | |
603b7257 NC |
5415 | _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd, |
5416 | struct bfd_link_info * info) | |
03a12831 AO |
5417 | { |
5418 | bfd * dynobj; | |
5419 | asection * sgot; | |
5420 | asection * sdyn; | |
3d4d4302 | 5421 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
03a12831 | 5422 | |
3d4d4302 AM |
5423 | dynobj = htab->root.dynobj; |
5424 | sgot = htab->root.sgotplt; | |
03a12831 | 5425 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 5426 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
03a12831 AO |
5427 | |
5428 | if (elf_hash_table (info)->dynamic_sections_created) | |
5429 | { | |
5430 | asection * splt; | |
5431 | Elf32_External_Dyn * dyncon; | |
5432 | Elf32_External_Dyn * dynconend; | |
5433 | ||
5434 | BFD_ASSERT (sdyn != NULL); | |
5435 | ||
5436 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 5437 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
03a12831 AO |
5438 | |
5439 | for (; dyncon < dynconend; dyncon++) | |
5440 | { | |
5441 | Elf_Internal_Dyn dyn; | |
5442 | const char * name; | |
5443 | asection * s; | |
5444 | ||
5445 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5446 | ||
5447 | switch (dyn.d_tag) | |
5448 | { | |
5449 | default: | |
5450 | break; | |
5451 | ||
5452 | case DT_PLTGOT: | |
5453 | name = ".got"; | |
5454 | goto get_vma; | |
5455 | ||
5456 | case DT_JMPREL: | |
5457 | name = ".rela.plt"; | |
5458 | get_vma: | |
5459 | s = bfd_get_section_by_name (output_bfd, name); | |
5460 | BFD_ASSERT (s != NULL); | |
5461 | dyn.d_un.d_ptr = s->vma; | |
5462 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5463 | break; | |
5464 | ||
5465 | case DT_PLTRELSZ: | |
5466 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
5467 | BFD_ASSERT (s != NULL); | |
eea6121a | 5468 | dyn.d_un.d_val = s->size; |
03a12831 AO |
5469 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5470 | break; | |
5471 | ||
5472 | case DT_RELASZ: | |
5473 | /* My reading of the SVR4 ABI indicates that the | |
5474 | procedure linkage table relocs (DT_JMPREL) should be | |
5475 | included in the overall relocs (DT_RELA). This is | |
5476 | what Solaris does. However, UnixWare can not handle | |
5477 | that case. Therefore, we override the DT_RELASZ entry | |
5478 | here to make it not include the JMPREL relocs. Since | |
5479 | the linker script arranges for .rela.plt to follow all | |
5480 | other relocation sections, we don't have to worry | |
5481 | about changing the DT_RELA entry. */ | |
5482 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
5483 | if (s != NULL) | |
eea6121a | 5484 | dyn.d_un.d_val -= s->size; |
03a12831 AO |
5485 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5486 | break; | |
5487 | } | |
5488 | } | |
5489 | ||
5490 | /* Fill in the first entry in the procedure linkage table. */ | |
3d4d4302 | 5491 | splt = htab->root.splt; |
eea6121a | 5492 | if (splt && splt->size > 0) |
03a12831 AO |
5493 | { |
5494 | if (info->shared) | |
5495 | { | |
5496 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
5497 | elf_mn10300_sizeof_plt (info)); | |
5498 | } | |
5499 | else | |
5500 | { | |
5501 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
5502 | bfd_put_32 (output_bfd, | |
5503 | sgot->output_section->vma + sgot->output_offset + 4, | |
5504 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
5505 | bfd_put_32 (output_bfd, | |
5506 | sgot->output_section->vma + sgot->output_offset + 8, | |
5507 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
5508 | } | |
5509 | ||
5510 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
5511 | really seem like the right value. */ | |
5512 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
0a22ae8e NC |
5513 | |
5514 | /* UnixWare sets the entsize of .plt to 4, but this is incorrect | |
5515 | as it means that the size of the PLT0 section (15 bytes) is not | |
5516 | a multiple of the sh_entsize. Some ELF tools flag this as an | |
5517 | error. We could pad PLT0 to 16 bytes, but that would introduce | |
5518 | compatibilty issues with previous toolchains, so instead we | |
5519 | just set the entry size to 1. */ | |
5520 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 1; | |
03a12831 AO |
5521 | } |
5522 | } | |
5523 | ||
5524 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 5525 | if (sgot->size > 0) |
03a12831 AO |
5526 | { |
5527 | if (sdyn == NULL) | |
5528 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5529 | else | |
5530 | bfd_put_32 (output_bfd, | |
5531 | sdyn->output_section->vma + sdyn->output_offset, | |
5532 | sgot->contents); | |
5533 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
5534 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
5535 | } | |
5536 | ||
5537 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
5538 | ||
5539 | return TRUE; | |
5540 | } | |
5541 | ||
a873f25a AO |
5542 | /* Classify relocation types, such that combreloc can sort them |
5543 | properly. */ | |
5544 | ||
5545 | static enum elf_reloc_type_class | |
7e612e98 AM |
5546 | _bfd_mn10300_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5547 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
5548 | const Elf_Internal_Rela *rela) | |
a873f25a AO |
5549 | { |
5550 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
5551 | { | |
603b7257 NC |
5552 | case R_MN10300_RELATIVE: return reloc_class_relative; |
5553 | case R_MN10300_JMP_SLOT: return reloc_class_plt; | |
5554 | case R_MN10300_COPY: return reloc_class_copy; | |
5555 | default: return reloc_class_normal; | |
a873f25a AO |
5556 | } |
5557 | } | |
5558 | ||
997fbe36 NC |
5559 | /* Allocate space for an MN10300 extension to the bfd elf data structure. */ |
5560 | ||
5561 | static bfd_boolean | |
5562 | mn10300_elf_mkobject (bfd *abfd) | |
5563 | { | |
0a22ae8e | 5564 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_mn10300_obj_tdata), |
997fbe36 NC |
5565 | MN10300_ELF_DATA); |
5566 | } | |
5567 | ||
5568 | #define bfd_elf32_mkobject mn10300_elf_mkobject | |
5569 | ||
73c3cd1c | 5570 | #ifndef ELF_ARCH |
6d00b590 | 5571 | #define TARGET_LITTLE_SYM mn10300_elf32_vec |
252b5132 RH |
5572 | #define TARGET_LITTLE_NAME "elf32-mn10300" |
5573 | #define ELF_ARCH bfd_arch_mn10300 | |
ae95ffa6 | 5574 | #define ELF_TARGET_ID MN10300_ELF_DATA |
6f4514dc AO |
5575 | #define ELF_MACHINE_CODE EM_MN10300 |
5576 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 5577 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 5578 | #endif |
252b5132 RH |
5579 | |
5580 | #define elf_info_to_howto mn10300_info_to_howto | |
5581 | #define elf_info_to_howto_rel 0 | |
5582 | #define elf_backend_can_gc_sections 1 | |
b491616a | 5583 | #define elf_backend_rela_normal 1 |
252b5132 RH |
5584 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
5585 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
5586 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
5587 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
5588 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
5589 | mn10300_elf_get_relocated_section_contents | |
5590 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5591 | elf32_mn10300_link_hash_table_create | |
5592 | ||
73c3cd1c | 5593 | #ifndef elf_symbol_leading_char |
252b5132 | 5594 | #define elf_symbol_leading_char '_' |
73c3cd1c | 5595 | #endif |
252b5132 RH |
5596 | |
5597 | /* So we can set bits in e_flags. */ | |
5598 | #define elf_backend_final_write_processing \ | |
3b36f7e6 AM |
5599 | _bfd_mn10300_elf_final_write_processing |
5600 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
252b5132 RH |
5601 | |
5602 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3b36f7e6 | 5603 | _bfd_mn10300_elf_merge_private_bfd_data |
252b5132 | 5604 | |
03a12831 AO |
5605 | #define elf_backend_can_gc_sections 1 |
5606 | #define elf_backend_create_dynamic_sections \ | |
5607 | _bfd_mn10300_elf_create_dynamic_sections | |
5608 | #define elf_backend_adjust_dynamic_symbol \ | |
5609 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
5610 | #define elf_backend_size_dynamic_sections \ | |
5611 | _bfd_mn10300_elf_size_dynamic_sections | |
74541ad4 AM |
5612 | #define elf_backend_omit_section_dynsym \ |
5613 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
03a12831 AO |
5614 | #define elf_backend_finish_dynamic_symbol \ |
5615 | _bfd_mn10300_elf_finish_dynamic_symbol | |
5616 | #define elf_backend_finish_dynamic_sections \ | |
5617 | _bfd_mn10300_elf_finish_dynamic_sections | |
0a22ae8e NC |
5618 | #define elf_backend_copy_indirect_symbol \ |
5619 | _bfd_mn10300_copy_indirect_symbol | |
a873f25a AO |
5620 | #define elf_backend_reloc_type_class \ |
5621 | _bfd_mn10300_elf_reloc_type_class | |
5622 | ||
03a12831 AO |
5623 | #define elf_backend_want_got_plt 1 |
5624 | #define elf_backend_plt_readonly 1 | |
5625 | #define elf_backend_want_plt_sym 0 | |
5626 | #define elf_backend_got_header_size 12 | |
03a12831 | 5627 | |
252b5132 | 5628 | #include "elf32-target.h" |