Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Matsushita 10300 specific support for 32-bit ELF |
66eb6687 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
4dfe6ac6 | 3 | 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
252b5132 | 4 | |
0112cd26 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
0112cd26 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
0112cd26 | 10 | (at your option) any later version. |
252b5132 | 11 | |
0112cd26 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
0112cd26 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 RH |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | #include "elf/mn10300.h" | |
603b7257 | 27 | #include "libiberty.h" |
917583ad | 28 | |
03a12831 AO |
29 | /* The mn10300 linker needs to keep track of the number of relocs that |
30 | it decides to copy in check_relocs for each symbol. This is so | |
31 | that it can discard PC relative relocs if it doesn't need them when | |
32 | linking with -Bsymbolic. We store the information in a field | |
33 | extending the regular ELF linker hash table. */ | |
34 | ||
603b7257 NC |
35 | struct elf32_mn10300_link_hash_entry |
36 | { | |
252b5132 RH |
37 | /* The basic elf link hash table entry. */ |
38 | struct elf_link_hash_entry root; | |
39 | ||
40 | /* For function symbols, the number of times this function is | |
41 | called directly (ie by name). */ | |
42 | unsigned int direct_calls; | |
43 | ||
44 | /* For function symbols, the size of this function's stack | |
45 | (if <= 255 bytes). We stuff this into "call" instructions | |
46 | to this target when it's valid and profitable to do so. | |
47 | ||
48 | This does not include stack allocated by movm! */ | |
49 | unsigned char stack_size; | |
50 | ||
51 | /* For function symbols, arguments (if any) for movm instruction | |
52 | in the prologue. We stuff this value into "call" instructions | |
53 | to the target when it's valid and profitable to do so. */ | |
54 | unsigned char movm_args; | |
55 | ||
4cc11e76 | 56 | /* For function symbols, the amount of stack space that would be allocated |
252b5132 RH |
57 | by the movm instruction. This is redundant with movm_args, but we |
58 | add it to the hash table to avoid computing it over and over. */ | |
59 | unsigned char movm_stack_size; | |
60 | ||
61 | /* When set, convert all "call" instructions to this target into "calls" | |
62 | instructions. */ | |
63 | #define MN10300_CONVERT_CALL_TO_CALLS 0x1 | |
64 | ||
65 | /* Used to mark functions which have had redundant parts of their | |
66 | prologue deleted. */ | |
67 | #define MN10300_DELETED_PROLOGUE_BYTES 0x2 | |
68 | unsigned char flags; | |
eb13e63f DD |
69 | |
70 | /* Calculated value. */ | |
71 | bfd_vma value; | |
252b5132 RH |
72 | }; |
73 | ||
74 | /* We derive a hash table from the main elf linker hash table so | |
75 | we can store state variables and a secondary hash table without | |
76 | resorting to global variables. */ | |
603b7257 NC |
77 | struct elf32_mn10300_link_hash_table |
78 | { | |
252b5132 RH |
79 | /* The main hash table. */ |
80 | struct elf_link_hash_table root; | |
81 | ||
82 | /* A hash table for static functions. We could derive a new hash table | |
83 | instead of using the full elf32_mn10300_link_hash_table if we wanted | |
84 | to save some memory. */ | |
85 | struct elf32_mn10300_link_hash_table *static_hash_table; | |
86 | ||
87 | /* Random linker state flags. */ | |
88 | #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 | |
89 | char flags; | |
90 | }; | |
91 | ||
603b7257 NC |
92 | #ifndef streq |
93 | #define streq(a, b) (strcmp ((a),(b)) == 0) | |
94 | #endif | |
95 | ||
252b5132 RH |
96 | /* For MN10300 linker hash table. */ |
97 | ||
98 | /* Get the MN10300 ELF linker hash table from a link_info structure. */ | |
99 | ||
100 | #define elf32_mn10300_hash_table(p) \ | |
4dfe6ac6 NC |
101 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
102 | == MN10300_ELF_DATA ? ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 RH |
103 | |
104 | #define elf32_mn10300_link_hash_traverse(table, func, info) \ | |
105 | (elf_link_hash_traverse \ | |
106 | (&(table)->root, \ | |
603b7257 | 107 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
108 | (info))) |
109 | ||
603b7257 NC |
110 | static reloc_howto_type elf_mn10300_howto_table[] = |
111 | { | |
252b5132 RH |
112 | /* Dummy relocation. Does nothing. */ |
113 | HOWTO (R_MN10300_NONE, | |
114 | 0, | |
115 | 2, | |
116 | 16, | |
b34976b6 | 117 | FALSE, |
252b5132 RH |
118 | 0, |
119 | complain_overflow_bitfield, | |
120 | bfd_elf_generic_reloc, | |
121 | "R_MN10300_NONE", | |
b34976b6 | 122 | FALSE, |
252b5132 RH |
123 | 0, |
124 | 0, | |
b34976b6 | 125 | FALSE), |
252b5132 RH |
126 | /* Standard 32 bit reloc. */ |
127 | HOWTO (R_MN10300_32, | |
128 | 0, | |
129 | 2, | |
130 | 32, | |
b34976b6 | 131 | FALSE, |
252b5132 RH |
132 | 0, |
133 | complain_overflow_bitfield, | |
134 | bfd_elf_generic_reloc, | |
135 | "R_MN10300_32", | |
b34976b6 | 136 | FALSE, |
252b5132 RH |
137 | 0xffffffff, |
138 | 0xffffffff, | |
b34976b6 | 139 | FALSE), |
252b5132 RH |
140 | /* Standard 16 bit reloc. */ |
141 | HOWTO (R_MN10300_16, | |
142 | 0, | |
143 | 1, | |
144 | 16, | |
b34976b6 | 145 | FALSE, |
252b5132 RH |
146 | 0, |
147 | complain_overflow_bitfield, | |
148 | bfd_elf_generic_reloc, | |
149 | "R_MN10300_16", | |
b34976b6 | 150 | FALSE, |
252b5132 RH |
151 | 0xffff, |
152 | 0xffff, | |
b34976b6 | 153 | FALSE), |
252b5132 RH |
154 | /* Standard 8 bit reloc. */ |
155 | HOWTO (R_MN10300_8, | |
156 | 0, | |
157 | 0, | |
158 | 8, | |
b34976b6 | 159 | FALSE, |
252b5132 RH |
160 | 0, |
161 | complain_overflow_bitfield, | |
162 | bfd_elf_generic_reloc, | |
163 | "R_MN10300_8", | |
b34976b6 | 164 | FALSE, |
252b5132 RH |
165 | 0xff, |
166 | 0xff, | |
b34976b6 | 167 | FALSE), |
252b5132 RH |
168 | /* Standard 32bit pc-relative reloc. */ |
169 | HOWTO (R_MN10300_PCREL32, | |
170 | 0, | |
171 | 2, | |
172 | 32, | |
b34976b6 | 173 | TRUE, |
252b5132 RH |
174 | 0, |
175 | complain_overflow_bitfield, | |
176 | bfd_elf_generic_reloc, | |
177 | "R_MN10300_PCREL32", | |
b34976b6 | 178 | FALSE, |
252b5132 RH |
179 | 0xffffffff, |
180 | 0xffffffff, | |
b34976b6 | 181 | TRUE), |
252b5132 RH |
182 | /* Standard 16bit pc-relative reloc. */ |
183 | HOWTO (R_MN10300_PCREL16, | |
184 | 0, | |
185 | 1, | |
186 | 16, | |
b34976b6 | 187 | TRUE, |
252b5132 RH |
188 | 0, |
189 | complain_overflow_bitfield, | |
190 | bfd_elf_generic_reloc, | |
191 | "R_MN10300_PCREL16", | |
b34976b6 | 192 | FALSE, |
252b5132 RH |
193 | 0xffff, |
194 | 0xffff, | |
b34976b6 | 195 | TRUE), |
252b5132 RH |
196 | /* Standard 8 pc-relative reloc. */ |
197 | HOWTO (R_MN10300_PCREL8, | |
198 | 0, | |
199 | 0, | |
200 | 8, | |
b34976b6 | 201 | TRUE, |
252b5132 RH |
202 | 0, |
203 | complain_overflow_bitfield, | |
204 | bfd_elf_generic_reloc, | |
205 | "R_MN10300_PCREL8", | |
b34976b6 | 206 | FALSE, |
252b5132 RH |
207 | 0xff, |
208 | 0xff, | |
b34976b6 | 209 | TRUE), |
252b5132 | 210 | |
603b7257 | 211 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
212 | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ |
213 | 0, /* rightshift */ | |
214 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 0, /* bitsize */ | |
b34976b6 | 216 | FALSE, /* pc_relative */ |
252b5132 RH |
217 | 0, /* bitpos */ |
218 | complain_overflow_dont, /* complain_on_overflow */ | |
219 | NULL, /* special_function */ | |
220 | "R_MN10300_GNU_VTINHERIT", /* name */ | |
b34976b6 | 221 | FALSE, /* partial_inplace */ |
252b5132 RH |
222 | 0, /* src_mask */ |
223 | 0, /* dst_mask */ | |
b34976b6 | 224 | FALSE), /* pcrel_offset */ |
252b5132 RH |
225 | |
226 | /* GNU extension to record C++ vtable member usage */ | |
227 | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ | |
228 | 0, /* rightshift */ | |
229 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
230 | 0, /* bitsize */ | |
b34976b6 | 231 | FALSE, /* pc_relative */ |
252b5132 RH |
232 | 0, /* bitpos */ |
233 | complain_overflow_dont, /* complain_on_overflow */ | |
234 | NULL, /* special_function */ | |
235 | "R_MN10300_GNU_VTENTRY", /* name */ | |
b34976b6 | 236 | FALSE, /* partial_inplace */ |
252b5132 RH |
237 | 0, /* src_mask */ |
238 | 0, /* dst_mask */ | |
b34976b6 | 239 | FALSE), /* pcrel_offset */ |
252b5132 RH |
240 | |
241 | /* Standard 24 bit reloc. */ | |
242 | HOWTO (R_MN10300_24, | |
243 | 0, | |
244 | 2, | |
245 | 24, | |
b34976b6 | 246 | FALSE, |
252b5132 RH |
247 | 0, |
248 | complain_overflow_bitfield, | |
249 | bfd_elf_generic_reloc, | |
250 | "R_MN10300_24", | |
b34976b6 | 251 | FALSE, |
252b5132 RH |
252 | 0xffffff, |
253 | 0xffffff, | |
b34976b6 | 254 | FALSE), |
03a12831 AO |
255 | HOWTO (R_MN10300_GOTPC32, /* type */ |
256 | 0, /* rightshift */ | |
257 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 32, /* bitsize */ | |
259 | TRUE, /* pc_relative */ | |
260 | 0, /* bitpos */ | |
261 | complain_overflow_bitfield, /* complain_on_overflow */ | |
262 | bfd_elf_generic_reloc, /* */ | |
263 | "R_MN10300_GOTPC32", /* name */ | |
264 | FALSE, /* partial_inplace */ | |
265 | 0xffffffff, /* src_mask */ | |
266 | 0xffffffff, /* dst_mask */ | |
267 | TRUE), /* pcrel_offset */ | |
268 | ||
269 | HOWTO (R_MN10300_GOTPC16, /* type */ | |
270 | 0, /* rightshift */ | |
271 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
272 | 16, /* bitsize */ | |
273 | TRUE, /* pc_relative */ | |
274 | 0, /* bitpos */ | |
275 | complain_overflow_bitfield, /* complain_on_overflow */ | |
276 | bfd_elf_generic_reloc, /* */ | |
277 | "R_MN10300_GOTPC16", /* name */ | |
278 | FALSE, /* partial_inplace */ | |
279 | 0xffff, /* src_mask */ | |
280 | 0xffff, /* dst_mask */ | |
281 | TRUE), /* pcrel_offset */ | |
282 | ||
283 | HOWTO (R_MN10300_GOTOFF32, /* type */ | |
284 | 0, /* rightshift */ | |
285 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
286 | 32, /* bitsize */ | |
287 | FALSE, /* pc_relative */ | |
288 | 0, /* bitpos */ | |
289 | complain_overflow_bitfield, /* complain_on_overflow */ | |
290 | bfd_elf_generic_reloc, /* */ | |
291 | "R_MN10300_GOTOFF32", /* name */ | |
292 | FALSE, /* partial_inplace */ | |
293 | 0xffffffff, /* src_mask */ | |
294 | 0xffffffff, /* dst_mask */ | |
295 | FALSE), /* pcrel_offset */ | |
296 | ||
297 | HOWTO (R_MN10300_GOTOFF24, /* type */ | |
298 | 0, /* rightshift */ | |
299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
300 | 24, /* bitsize */ | |
301 | FALSE, /* pc_relative */ | |
302 | 0, /* bitpos */ | |
303 | complain_overflow_bitfield, /* complain_on_overflow */ | |
304 | bfd_elf_generic_reloc, /* */ | |
305 | "R_MN10300_GOTOFF24", /* name */ | |
306 | FALSE, /* partial_inplace */ | |
307 | 0xffffff, /* src_mask */ | |
308 | 0xffffff, /* dst_mask */ | |
309 | FALSE), /* pcrel_offset */ | |
310 | ||
311 | HOWTO (R_MN10300_GOTOFF16, /* type */ | |
312 | 0, /* rightshift */ | |
313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
314 | 16, /* bitsize */ | |
315 | FALSE, /* pc_relative */ | |
316 | 0, /* bitpos */ | |
317 | complain_overflow_bitfield, /* complain_on_overflow */ | |
318 | bfd_elf_generic_reloc, /* */ | |
319 | "R_MN10300_GOTOFF16", /* name */ | |
320 | FALSE, /* partial_inplace */ | |
321 | 0xffff, /* src_mask */ | |
322 | 0xffff, /* dst_mask */ | |
323 | FALSE), /* pcrel_offset */ | |
324 | ||
325 | HOWTO (R_MN10300_PLT32, /* type */ | |
326 | 0, /* rightshift */ | |
327 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
328 | 32, /* bitsize */ | |
329 | TRUE, /* pc_relative */ | |
330 | 0, /* bitpos */ | |
331 | complain_overflow_bitfield, /* complain_on_overflow */ | |
332 | bfd_elf_generic_reloc, /* */ | |
333 | "R_MN10300_PLT32", /* name */ | |
334 | FALSE, /* partial_inplace */ | |
335 | 0xffffffff, /* src_mask */ | |
336 | 0xffffffff, /* dst_mask */ | |
337 | TRUE), /* pcrel_offset */ | |
338 | ||
339 | HOWTO (R_MN10300_PLT16, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
343 | TRUE, /* pc_relative */ | |
344 | 0, /* bitpos */ | |
345 | complain_overflow_bitfield, /* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* */ | |
347 | "R_MN10300_PLT16", /* name */ | |
348 | FALSE, /* partial_inplace */ | |
349 | 0xffff, /* src_mask */ | |
350 | 0xffff, /* dst_mask */ | |
351 | TRUE), /* pcrel_offset */ | |
352 | ||
353 | HOWTO (R_MN10300_GOT32, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 32, /* bitsize */ | |
357 | FALSE, /* pc_relative */ | |
358 | 0, /* bitpos */ | |
359 | complain_overflow_bitfield, /* complain_on_overflow */ | |
360 | bfd_elf_generic_reloc, /* */ | |
361 | "R_MN10300_GOT32", /* name */ | |
362 | FALSE, /* partial_inplace */ | |
363 | 0xffffffff, /* src_mask */ | |
364 | 0xffffffff, /* dst_mask */ | |
365 | FALSE), /* pcrel_offset */ | |
366 | ||
367 | HOWTO (R_MN10300_GOT24, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 24, /* bitsize */ | |
371 | FALSE, /* pc_relative */ | |
372 | 0, /* bitpos */ | |
373 | complain_overflow_bitfield, /* complain_on_overflow */ | |
374 | bfd_elf_generic_reloc, /* */ | |
375 | "R_MN10300_GOT24", /* name */ | |
376 | FALSE, /* partial_inplace */ | |
377 | 0xffffffff, /* src_mask */ | |
378 | 0xffffffff, /* dst_mask */ | |
379 | FALSE), /* pcrel_offset */ | |
380 | ||
381 | HOWTO (R_MN10300_GOT16, /* type */ | |
382 | 0, /* rightshift */ | |
383 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
384 | 16, /* bitsize */ | |
385 | FALSE, /* pc_relative */ | |
386 | 0, /* bitpos */ | |
387 | complain_overflow_bitfield, /* complain_on_overflow */ | |
388 | bfd_elf_generic_reloc, /* */ | |
389 | "R_MN10300_GOT16", /* name */ | |
390 | FALSE, /* partial_inplace */ | |
391 | 0xffffffff, /* src_mask */ | |
392 | 0xffffffff, /* dst_mask */ | |
393 | FALSE), /* pcrel_offset */ | |
394 | ||
395 | HOWTO (R_MN10300_COPY, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 32, /* bitsize */ | |
399 | FALSE, /* pc_relative */ | |
400 | 0, /* bitpos */ | |
401 | complain_overflow_bitfield, /* complain_on_overflow */ | |
402 | bfd_elf_generic_reloc, /* */ | |
403 | "R_MN10300_COPY", /* name */ | |
404 | FALSE, /* partial_inplace */ | |
405 | 0xffffffff, /* src_mask */ | |
406 | 0xffffffff, /* dst_mask */ | |
407 | FALSE), /* pcrel_offset */ | |
408 | ||
409 | HOWTO (R_MN10300_GLOB_DAT, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 32, /* bitsize */ | |
413 | FALSE, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_bitfield, /* complain_on_overflow */ | |
416 | bfd_elf_generic_reloc, /* */ | |
417 | "R_MN10300_GLOB_DAT", /* name */ | |
418 | FALSE, /* partial_inplace */ | |
419 | 0xffffffff, /* src_mask */ | |
420 | 0xffffffff, /* dst_mask */ | |
421 | FALSE), /* pcrel_offset */ | |
422 | ||
423 | HOWTO (R_MN10300_JMP_SLOT, /* type */ | |
424 | 0, /* rightshift */ | |
425 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
426 | 32, /* bitsize */ | |
427 | FALSE, /* pc_relative */ | |
428 | 0, /* bitpos */ | |
429 | complain_overflow_bitfield, /* complain_on_overflow */ | |
430 | bfd_elf_generic_reloc, /* */ | |
431 | "R_MN10300_JMP_SLOT", /* name */ | |
432 | FALSE, /* partial_inplace */ | |
433 | 0xffffffff, /* src_mask */ | |
434 | 0xffffffff, /* dst_mask */ | |
435 | FALSE), /* pcrel_offset */ | |
436 | ||
437 | HOWTO (R_MN10300_RELATIVE, /* type */ | |
438 | 0, /* rightshift */ | |
439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
440 | 32, /* bitsize */ | |
441 | FALSE, /* pc_relative */ | |
442 | 0, /* bitpos */ | |
443 | complain_overflow_bitfield, /* complain_on_overflow */ | |
444 | bfd_elf_generic_reloc, /* */ | |
445 | "R_MN10300_RELATIVE", /* name */ | |
446 | FALSE, /* partial_inplace */ | |
447 | 0xffffffff, /* src_mask */ | |
448 | 0xffffffff, /* dst_mask */ | |
449 | FALSE), /* pcrel_offset */ | |
bfff1642 NC |
450 | |
451 | EMPTY_HOWTO (24), | |
452 | EMPTY_HOWTO (25), | |
453 | EMPTY_HOWTO (26), | |
454 | EMPTY_HOWTO (27), | |
455 | EMPTY_HOWTO (28), | |
456 | EMPTY_HOWTO (29), | |
457 | EMPTY_HOWTO (30), | |
458 | EMPTY_HOWTO (31), | |
459 | EMPTY_HOWTO (32), | |
460 | ||
461 | HOWTO (R_MN10300_SYM_DIFF, /* type */ | |
462 | 0, /* rightshift */ | |
463 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
464 | 32, /* bitsize */ | |
465 | FALSE, /* pc_relative */ | |
466 | 0, /* bitpos */ | |
467 | complain_overflow_dont,/* complain_on_overflow */ | |
468 | NULL, /* special handler. */ | |
469 | "R_MN10300_SYM_DIFF", /* name */ | |
470 | FALSE, /* partial_inplace */ | |
471 | 0xffffffff, /* src_mask */ | |
472 | 0xffffffff, /* dst_mask */ | |
569006e5 NC |
473 | FALSE), /* pcrel_offset */ |
474 | ||
475 | HOWTO (R_MN10300_ALIGN, /* type */ | |
476 | 0, /* rightshift */ | |
477 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 32, /* bitsize */ | |
479 | FALSE, /* pc_relative */ | |
480 | 0, /* bitpos */ | |
481 | complain_overflow_dont,/* complain_on_overflow */ | |
482 | NULL, /* special handler. */ | |
483 | "R_MN10300_ALIGN", /* name */ | |
484 | FALSE, /* partial_inplace */ | |
485 | 0, /* src_mask */ | |
486 | 0, /* dst_mask */ | |
bfff1642 | 487 | FALSE) /* pcrel_offset */ |
252b5132 RH |
488 | }; |
489 | ||
603b7257 NC |
490 | struct mn10300_reloc_map |
491 | { | |
252b5132 RH |
492 | bfd_reloc_code_real_type bfd_reloc_val; |
493 | unsigned char elf_reloc_val; | |
494 | }; | |
495 | ||
603b7257 NC |
496 | static const struct mn10300_reloc_map mn10300_reloc_map[] = |
497 | { | |
252b5132 RH |
498 | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
499 | { BFD_RELOC_32, R_MN10300_32, }, | |
500 | { BFD_RELOC_16, R_MN10300_16, }, | |
501 | { BFD_RELOC_8, R_MN10300_8, }, | |
502 | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, | |
503 | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, | |
504 | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, | |
505 | { BFD_RELOC_24, R_MN10300_24, }, | |
506 | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, | |
507 | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, | |
03a12831 AO |
508 | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
509 | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, | |
510 | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, | |
511 | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, | |
512 | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, | |
513 | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, | |
514 | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, | |
515 | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, | |
516 | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, | |
517 | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, | |
518 | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, | |
519 | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, | |
520 | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, | |
521 | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, | |
569006e5 NC |
522 | { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF }, |
523 | { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN } | |
252b5132 RH |
524 | }; |
525 | ||
03a12831 AO |
526 | /* Create the GOT section. */ |
527 | ||
528 | static bfd_boolean | |
603b7257 NC |
529 | _bfd_mn10300_elf_create_got_section (bfd * abfd, |
530 | struct bfd_link_info * info) | |
03a12831 AO |
531 | { |
532 | flagword flags; | |
533 | flagword pltflags; | |
534 | asection * s; | |
535 | struct elf_link_hash_entry * h; | |
9c5bfbb7 | 536 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
537 | int ptralign; |
538 | ||
539 | /* This function may be called more than once. */ | |
540 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
541 | return TRUE; | |
542 | ||
543 | switch (bed->s->arch_size) | |
544 | { | |
545 | case 32: | |
546 | ptralign = 2; | |
547 | break; | |
548 | ||
549 | case 64: | |
550 | ptralign = 3; | |
551 | break; | |
552 | ||
553 | default: | |
554 | bfd_set_error (bfd_error_bad_value); | |
555 | return FALSE; | |
556 | } | |
557 | ||
558 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
559 | | SEC_LINKER_CREATED); | |
560 | ||
561 | pltflags = flags; | |
562 | pltflags |= SEC_CODE; | |
563 | if (bed->plt_not_loaded) | |
564 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
565 | if (bed->plt_readonly) | |
566 | pltflags |= SEC_READONLY; | |
567 | ||
3496cb2a | 568 | s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
03a12831 | 569 | if (s == NULL |
03a12831 AO |
570 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
571 | return FALSE; | |
572 | ||
d98685ac AM |
573 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
574 | .plt section. */ | |
7325306f RS |
575 | if (bed->want_plt_sym) |
576 | { | |
577 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
578 | "_PROCEDURE_LINKAGE_TABLE_"); | |
579 | elf_hash_table (info)->hplt = h; | |
580 | if (h == NULL) | |
581 | return FALSE; | |
582 | } | |
03a12831 | 583 | |
3496cb2a | 584 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
03a12831 | 585 | if (s == NULL |
03a12831 AO |
586 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
587 | return FALSE; | |
588 | ||
589 | if (bed->want_got_plt) | |
590 | { | |
3496cb2a | 591 | s = bfd_make_section_with_flags (abfd, ".got.plt", flags); |
03a12831 | 592 | if (s == NULL |
03a12831 AO |
593 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
594 | return FALSE; | |
595 | } | |
596 | ||
597 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
598 | (or .got.plt) section. We don't do this in the linker script | |
599 | because we don't want to define the symbol if we are not creating | |
600 | a global offset table. */ | |
d98685ac | 601 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
03a12831 | 602 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
603 | if (h == NULL) |
604 | return FALSE; | |
03a12831 AO |
605 | |
606 | /* The first bit of the global offset table is the header. */ | |
3b36f7e6 | 607 | s->size += bed->got_header_size; |
03a12831 AO |
608 | |
609 | return TRUE; | |
610 | } | |
611 | ||
252b5132 | 612 | static reloc_howto_type * |
603b7257 NC |
613 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
614 | bfd_reloc_code_real_type code) | |
252b5132 RH |
615 | { |
616 | unsigned int i; | |
617 | ||
603b7257 NC |
618 | for (i = ARRAY_SIZE (mn10300_reloc_map); i--;) |
619 | if (mn10300_reloc_map[i].bfd_reloc_val == code) | |
620 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; | |
252b5132 RH |
621 | |
622 | return NULL; | |
623 | } | |
624 | ||
157090f7 AM |
625 | static reloc_howto_type * |
626 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
627 | const char *r_name) | |
628 | { | |
629 | unsigned int i; | |
630 | ||
603b7257 | 631 | for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;) |
157090f7 AM |
632 | if (elf_mn10300_howto_table[i].name != NULL |
633 | && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0) | |
603b7257 | 634 | return elf_mn10300_howto_table + i; |
157090f7 AM |
635 | |
636 | return NULL; | |
637 | } | |
638 | ||
252b5132 RH |
639 | /* Set the howto pointer for an MN10300 ELF reloc. */ |
640 | ||
641 | static void | |
603b7257 NC |
642 | mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
643 | arelent *cache_ptr, | |
644 | Elf_Internal_Rela *dst) | |
252b5132 RH |
645 | { |
646 | unsigned int r_type; | |
647 | ||
648 | r_type = ELF32_R_TYPE (dst->r_info); | |
649 | BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); | |
603b7257 | 650 | cache_ptr->howto = elf_mn10300_howto_table + r_type; |
252b5132 RH |
651 | } |
652 | ||
653 | /* Look through the relocs for a section during the first phase. | |
654 | Since we don't do .gots or .plts, we just need to consider the | |
655 | virtual table relocs for gc. */ | |
656 | ||
b34976b6 | 657 | static bfd_boolean |
603b7257 NC |
658 | mn10300_elf_check_relocs (bfd *abfd, |
659 | struct bfd_link_info *info, | |
660 | asection *sec, | |
661 | const Elf_Internal_Rela *relocs) | |
252b5132 | 662 | { |
bfff1642 | 663 | bfd_boolean sym_diff_reloc_seen; |
252b5132 | 664 | Elf_Internal_Shdr *symtab_hdr; |
62d7f790 | 665 | Elf_Internal_Sym * isymbuf = NULL; |
5582a088 | 666 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
667 | const Elf_Internal_Rela *rel; |
668 | const Elf_Internal_Rela *rel_end; | |
03a12831 AO |
669 | bfd * dynobj; |
670 | bfd_vma * local_got_offsets; | |
671 | asection * sgot; | |
672 | asection * srelgot; | |
673 | asection * sreloc; | |
62d7f790 | 674 | bfd_boolean result = FALSE; |
03a12831 AO |
675 | |
676 | sgot = NULL; | |
677 | srelgot = NULL; | |
678 | sreloc = NULL; | |
252b5132 | 679 | |
1049f94e | 680 | if (info->relocatable) |
b34976b6 | 681 | return TRUE; |
252b5132 RH |
682 | |
683 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
62d7f790 | 684 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
252b5132 | 685 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 686 | |
03a12831 AO |
687 | dynobj = elf_hash_table (info)->dynobj; |
688 | local_got_offsets = elf_local_got_offsets (abfd); | |
252b5132 | 689 | rel_end = relocs + sec->reloc_count; |
bfff1642 | 690 | sym_diff_reloc_seen = FALSE; |
603b7257 | 691 | |
252b5132 RH |
692 | for (rel = relocs; rel < rel_end; rel++) |
693 | { | |
694 | struct elf_link_hash_entry *h; | |
695 | unsigned long r_symndx; | |
62d7f790 | 696 | unsigned int r_type; |
252b5132 RH |
697 | |
698 | r_symndx = ELF32_R_SYM (rel->r_info); | |
699 | if (r_symndx < symtab_hdr->sh_info) | |
700 | h = NULL; | |
701 | else | |
973a3492 L |
702 | { |
703 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
704 | while (h->root.type == bfd_link_hash_indirect | |
705 | || h->root.type == bfd_link_hash_warning) | |
706 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
707 | } | |
252b5132 | 708 | |
62d7f790 NC |
709 | r_type = ELF32_R_TYPE (rel->r_info); |
710 | ||
03a12831 AO |
711 | /* Some relocs require a global offset table. */ |
712 | if (dynobj == NULL) | |
713 | { | |
62d7f790 | 714 | switch (r_type) |
03a12831 AO |
715 | { |
716 | case R_MN10300_GOT32: | |
717 | case R_MN10300_GOT24: | |
718 | case R_MN10300_GOT16: | |
719 | case R_MN10300_GOTOFF32: | |
720 | case R_MN10300_GOTOFF24: | |
721 | case R_MN10300_GOTOFF16: | |
722 | case R_MN10300_GOTPC32: | |
723 | case R_MN10300_GOTPC16: | |
724 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
725 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) | |
62d7f790 | 726 | goto fail; |
03a12831 AO |
727 | break; |
728 | ||
729 | default: | |
730 | break; | |
731 | } | |
732 | } | |
733 | ||
62d7f790 | 734 | switch (r_type) |
252b5132 RH |
735 | { |
736 | /* This relocation describes the C++ object vtable hierarchy. | |
737 | Reconstruct it for later use during GC. */ | |
738 | case R_MN10300_GNU_VTINHERIT: | |
c152c796 | 739 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
62d7f790 | 740 | goto fail; |
252b5132 RH |
741 | break; |
742 | ||
743 | /* This relocation describes which C++ vtable entries are actually | |
744 | used. Record for later use during GC. */ | |
745 | case R_MN10300_GNU_VTENTRY: | |
d17e0c6e JB |
746 | BFD_ASSERT (h != NULL); |
747 | if (h != NULL | |
748 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
62d7f790 | 749 | goto fail; |
252b5132 | 750 | break; |
62d7f790 | 751 | |
03a12831 AO |
752 | case R_MN10300_GOT32: |
753 | case R_MN10300_GOT24: | |
754 | case R_MN10300_GOT16: | |
755 | /* This symbol requires a global offset table entry. */ | |
756 | ||
757 | if (sgot == NULL) | |
758 | { | |
759 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
760 | BFD_ASSERT (sgot != NULL); | |
761 | } | |
762 | ||
763 | if (srelgot == NULL | |
764 | && (h != NULL || info->shared)) | |
765 | { | |
766 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
767 | if (srelgot == NULL) | |
768 | { | |
3496cb2a L |
769 | srelgot = bfd_make_section_with_flags (dynobj, |
770 | ".rela.got", | |
771 | (SEC_ALLOC | |
772 | | SEC_LOAD | |
773 | | SEC_HAS_CONTENTS | |
774 | | SEC_IN_MEMORY | |
775 | | SEC_LINKER_CREATED | |
776 | | SEC_READONLY)); | |
03a12831 | 777 | if (srelgot == NULL |
03a12831 | 778 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) |
62d7f790 | 779 | goto fail; |
03a12831 AO |
780 | } |
781 | } | |
782 | ||
783 | if (h != NULL) | |
784 | { | |
785 | if (h->got.offset != (bfd_vma) -1) | |
786 | /* We have already allocated space in the .got. */ | |
787 | break; | |
788 | ||
eea6121a | 789 | h->got.offset = sgot->size; |
03a12831 AO |
790 | |
791 | /* Make sure this symbol is output as a dynamic symbol. */ | |
792 | if (h->dynindx == -1) | |
793 | { | |
c152c796 | 794 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
62d7f790 | 795 | goto fail; |
03a12831 AO |
796 | } |
797 | ||
eea6121a | 798 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
799 | } |
800 | else | |
801 | { | |
802 | /* This is a global offset table entry for a local | |
3b36f7e6 | 803 | symbol. */ |
03a12831 AO |
804 | if (local_got_offsets == NULL) |
805 | { | |
806 | size_t size; | |
807 | unsigned int i; | |
808 | ||
809 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
603b7257 | 810 | local_got_offsets = bfd_alloc (abfd, size); |
03a12831 AO |
811 | |
812 | if (local_got_offsets == NULL) | |
62d7f790 NC |
813 | goto fail; |
814 | ||
03a12831 AO |
815 | elf_local_got_offsets (abfd) = local_got_offsets; |
816 | ||
817 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
818 | local_got_offsets[i] = (bfd_vma) -1; | |
819 | } | |
820 | ||
821 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
822 | /* We have already allocated space in the .got. */ | |
823 | break; | |
824 | ||
eea6121a | 825 | local_got_offsets[r_symndx] = sgot->size; |
03a12831 AO |
826 | |
827 | if (info->shared) | |
828 | /* If we are generating a shared object, we need to | |
829 | output a R_MN10300_RELATIVE reloc so that the dynamic | |
830 | linker can adjust this GOT entry. */ | |
eea6121a | 831 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
832 | } |
833 | ||
eea6121a | 834 | sgot->size += 4; |
03a12831 AO |
835 | break; |
836 | ||
837 | case R_MN10300_PLT32: | |
838 | case R_MN10300_PLT16: | |
839 | /* This symbol requires a procedure linkage table entry. We | |
840 | actually build the entry in adjust_dynamic_symbol, | |
841 | because this might be a case of linking PIC code which is | |
842 | never referenced by a dynamic object, in which case we | |
843 | don't need to generate a procedure linkage table entry | |
844 | after all. */ | |
845 | ||
846 | /* If this is a local symbol, we resolve it directly without | |
847 | creating a procedure linkage table entry. */ | |
848 | if (h == NULL) | |
849 | continue; | |
850 | ||
851 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
852 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
853 | break; | |
854 | ||
f5385ebf | 855 | h->needs_plt = 1; |
03a12831 AO |
856 | break; |
857 | ||
03a12831 AO |
858 | case R_MN10300_24: |
859 | case R_MN10300_16: | |
860 | case R_MN10300_8: | |
861 | case R_MN10300_PCREL32: | |
862 | case R_MN10300_PCREL16: | |
863 | case R_MN10300_PCREL8: | |
864 | if (h != NULL) | |
f5385ebf | 865 | h->non_got_ref = 1; |
146ccdbb | 866 | break; |
03a12831 | 867 | |
bfff1642 NC |
868 | case R_MN10300_SYM_DIFF: |
869 | sym_diff_reloc_seen = TRUE; | |
870 | break; | |
871 | ||
146ccdbb AO |
872 | case R_MN10300_32: |
873 | if (h != NULL) | |
f5385ebf | 874 | h->non_got_ref = 1; |
146ccdbb | 875 | |
bfff1642 NC |
876 | /* If we are creating a shared library, then we |
877 | need to copy the reloc into the shared library. */ | |
03a12831 | 878 | if (info->shared |
bfff1642 NC |
879 | && (sec->flags & SEC_ALLOC) != 0 |
880 | /* Do not generate a dynamic reloc for a | |
881 | reloc associated with a SYM_DIFF operation. */ | |
882 | && ! sym_diff_reloc_seen) | |
03a12831 | 883 | { |
bfff1642 | 884 | asection * sym_section = NULL; |
03a12831 | 885 | |
bfff1642 NC |
886 | /* Find the section containing the |
887 | symbol involved in the relocation. */ | |
888 | if (h == NULL) | |
889 | { | |
bfff1642 NC |
890 | Elf_Internal_Sym * isym; |
891 | ||
bfff1642 NC |
892 | if (isymbuf == NULL) |
893 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
894 | symtab_hdr->sh_info, 0, | |
895 | NULL, NULL, NULL); | |
896 | if (isymbuf) | |
897 | { | |
898 | isym = isymbuf + r_symndx; | |
899 | /* All we care about is whether this local symbol is absolute. */ | |
900 | if (isym->st_shndx == SHN_ABS) | |
901 | sym_section = bfd_abs_section_ptr; | |
902 | } | |
903 | } | |
904 | else | |
905 | { | |
906 | if (h->root.type == bfd_link_hash_defined | |
907 | || h->root.type == bfd_link_hash_defweak) | |
908 | sym_section = h->root.u.def.section; | |
909 | } | |
03a12831 | 910 | |
bfff1642 NC |
911 | /* If the symbol is absolute then the relocation can |
912 | be resolved during linking and there is no need for | |
913 | a dynamic reloc. */ | |
914 | if (sym_section != bfd_abs_section_ptr) | |
915 | { | |
916 | /* When creating a shared object, we must copy these | |
917 | reloc types into the output file. We create a reloc | |
918 | section in dynobj and make room for this reloc. */ | |
03a12831 AO |
919 | if (sreloc == NULL) |
920 | { | |
83bac4b0 NC |
921 | sreloc = _bfd_elf_make_dynamic_reloc_section |
922 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
bfff1642 | 923 | if (sreloc == NULL) |
83bac4b0 | 924 | goto fail; |
03a12831 | 925 | } |
03a12831 | 926 | |
bfff1642 NC |
927 | sreloc->size += sizeof (Elf32_External_Rela); |
928 | } | |
03a12831 AO |
929 | } |
930 | ||
931 | break; | |
252b5132 | 932 | } |
bfff1642 NC |
933 | |
934 | if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF) | |
935 | sym_diff_reloc_seen = FALSE; | |
252b5132 RH |
936 | } |
937 | ||
62d7f790 NC |
938 | result = TRUE; |
939 | fail: | |
940 | if (isymbuf != NULL) | |
941 | free (isymbuf); | |
942 | ||
943 | return result; | |
252b5132 RH |
944 | } |
945 | ||
946 | /* Return the section that should be marked against GC for a given | |
947 | relocation. */ | |
948 | ||
949 | static asection * | |
07adf181 AM |
950 | mn10300_elf_gc_mark_hook (asection *sec, |
951 | struct bfd_link_info *info, | |
952 | Elf_Internal_Rela *rel, | |
953 | struct elf_link_hash_entry *h, | |
954 | Elf_Internal_Sym *sym) | |
252b5132 RH |
955 | { |
956 | if (h != NULL) | |
07adf181 AM |
957 | switch (ELF32_R_TYPE (rel->r_info)) |
958 | { | |
959 | case R_MN10300_GNU_VTINHERIT: | |
960 | case R_MN10300_GNU_VTENTRY: | |
961 | return NULL; | |
962 | } | |
963 | ||
964 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
965 | } |
966 | ||
967 | /* Perform a relocation as part of a final link. */ | |
603b7257 | 968 | |
252b5132 | 969 | static bfd_reloc_status_type |
603b7257 NC |
970 | mn10300_elf_final_link_relocate (reloc_howto_type *howto, |
971 | bfd *input_bfd, | |
972 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
973 | asection *input_section, | |
974 | bfd_byte *contents, | |
975 | bfd_vma offset, | |
976 | bfd_vma value, | |
977 | bfd_vma addend, | |
978 | struct elf_link_hash_entry * h, | |
979 | unsigned long symndx, | |
980 | struct bfd_link_info *info, | |
981 | asection *sym_sec ATTRIBUTE_UNUSED, | |
982 | int is_local ATTRIBUTE_UNUSED) | |
252b5132 | 983 | { |
bfff1642 NC |
984 | static asection * sym_diff_section; |
985 | static bfd_vma sym_diff_value; | |
986 | bfd_boolean is_sym_diff_reloc; | |
252b5132 | 987 | unsigned long r_type = howto->type; |
603b7257 | 988 | bfd_byte * hit_data = contents + offset; |
03a12831 AO |
989 | bfd * dynobj; |
990 | bfd_vma * local_got_offsets; | |
991 | asection * sgot; | |
992 | asection * splt; | |
993 | asection * sreloc; | |
994 | ||
995 | dynobj = elf_hash_table (info)->dynobj; | |
996 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
997 | ||
998 | sgot = NULL; | |
999 | splt = NULL; | |
1000 | sreloc = NULL; | |
252b5132 | 1001 | |
146ccdbb AO |
1002 | switch (r_type) |
1003 | { | |
1004 | case R_MN10300_24: | |
1005 | case R_MN10300_16: | |
1006 | case R_MN10300_8: | |
1007 | case R_MN10300_PCREL8: | |
1008 | case R_MN10300_PCREL16: | |
1009 | case R_MN10300_PCREL32: | |
1010 | case R_MN10300_GOTOFF32: | |
1011 | case R_MN10300_GOTOFF24: | |
1012 | case R_MN10300_GOTOFF16: | |
1013 | if (info->shared | |
1014 | && (input_section->flags & SEC_ALLOC) != 0 | |
1015 | && h != NULL | |
7e2294f9 | 1016 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
146ccdbb AO |
1017 | return bfd_reloc_dangerous; |
1018 | } | |
1019 | ||
bfff1642 NC |
1020 | is_sym_diff_reloc = FALSE; |
1021 | if (sym_diff_section != NULL) | |
1022 | { | |
1023 | BFD_ASSERT (sym_diff_section == input_section); | |
1024 | ||
1025 | switch (r_type) | |
1026 | { | |
1027 | case R_MN10300_32: | |
1028 | case R_MN10300_24: | |
1029 | case R_MN10300_16: | |
1030 | case R_MN10300_8: | |
1031 | value -= sym_diff_value; | |
b5f5fd96 NC |
1032 | /* If we are computing a 32-bit value for the location lists |
1033 | and the result is 0 then we add one to the value. A zero | |
1034 | value can result because of linker relaxation deleteing | |
1035 | prologue instructions and using a value of 1 (for the begin | |
1036 | and end offsets in the location list entry) results in a | |
1037 | nul entry which does not prevent the following entries from | |
1038 | being parsed. */ | |
1039 | if (r_type == R_MN10300_32 | |
1040 | && value == 0 | |
1041 | && strcmp (input_section->name, ".debug_loc") == 0) | |
1042 | value = 1; | |
bfff1642 NC |
1043 | sym_diff_section = NULL; |
1044 | is_sym_diff_reloc = TRUE; | |
1045 | break; | |
1046 | ||
1047 | default: | |
1048 | sym_diff_section = NULL; | |
1049 | break; | |
1050 | } | |
1051 | } | |
1052 | ||
252b5132 RH |
1053 | switch (r_type) |
1054 | { | |
bfff1642 NC |
1055 | case R_MN10300_SYM_DIFF: |
1056 | BFD_ASSERT (addend == 0); | |
1057 | /* Cache the input section and value. | |
1058 | The offset is unreliable, since relaxation may | |
1059 | have reduced the following reloc's offset. */ | |
1060 | sym_diff_section = input_section; | |
1061 | sym_diff_value = value; | |
1062 | return bfd_reloc_ok; | |
1063 | ||
569006e5 | 1064 | case R_MN10300_ALIGN: |
252b5132 RH |
1065 | case R_MN10300_NONE: |
1066 | return bfd_reloc_ok; | |
1067 | ||
1068 | case R_MN10300_32: | |
03a12831 | 1069 | if (info->shared |
bfff1642 NC |
1070 | /* Do not generate relocs when an R_MN10300_32 has been used |
1071 | with an R_MN10300_SYM_DIFF to compute a difference of two | |
1072 | symbols. */ | |
1073 | && is_sym_diff_reloc == FALSE | |
1074 | /* Also, do not generate a reloc when the symbol associated | |
1075 | with the R_MN10300_32 reloc is absolute - there is no | |
1076 | need for a run time computation in this case. */ | |
1077 | && sym_sec != bfd_abs_section_ptr | |
1078 | /* If the section is not going to be allocated at load time | |
1079 | then there is no need to generate relocs for it. */ | |
03a12831 AO |
1080 | && (input_section->flags & SEC_ALLOC) != 0) |
1081 | { | |
1082 | Elf_Internal_Rela outrel; | |
1083 | bfd_boolean skip, relocate; | |
1084 | ||
1085 | /* When generating a shared object, these relocations are | |
1086 | copied into the output file to be resolved at run | |
1087 | time. */ | |
1088 | if (sreloc == NULL) | |
1089 | { | |
83bac4b0 NC |
1090 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1091 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1092 | if (sreloc == NULL) | |
03a12831 | 1093 | return FALSE; |
03a12831 AO |
1094 | } |
1095 | ||
1096 | skip = FALSE; | |
1097 | ||
eea6121a AM |
1098 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1099 | input_section, offset); | |
1100 | if (outrel.r_offset == (bfd_vma) -1) | |
1101 | skip = TRUE; | |
03a12831 AO |
1102 | |
1103 | outrel.r_offset += (input_section->output_section->vma | |
1104 | + input_section->output_offset); | |
1105 | ||
1106 | if (skip) | |
1107 | { | |
1108 | memset (&outrel, 0, sizeof outrel); | |
1109 | relocate = FALSE; | |
1110 | } | |
1111 | else | |
1112 | { | |
1113 | /* h->dynindx may be -1 if this symbol was marked to | |
1114 | become local. */ | |
1115 | if (h == NULL | |
7e2294f9 | 1116 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1117 | { |
1118 | relocate = TRUE; | |
1119 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1120 | outrel.r_addend = value + addend; | |
1121 | } | |
1122 | else | |
1123 | { | |
1124 | BFD_ASSERT (h->dynindx != -1); | |
1125 | relocate = FALSE; | |
1126 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1127 | outrel.r_addend = value + addend; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1132 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1133 | + sreloc->reloc_count)); | |
03a12831 AO |
1134 | ++sreloc->reloc_count; |
1135 | ||
1136 | /* If this reloc is against an external symbol, we do | |
1137 | not want to fiddle with the addend. Otherwise, we | |
1138 | need to include the symbol value so that it becomes | |
1139 | an addend for the dynamic reloc. */ | |
1140 | if (! relocate) | |
1141 | return bfd_reloc_ok; | |
1142 | } | |
252b5132 RH |
1143 | value += addend; |
1144 | bfd_put_32 (input_bfd, value, hit_data); | |
1145 | return bfd_reloc_ok; | |
1146 | ||
1147 | case R_MN10300_24: | |
1148 | value += addend; | |
1149 | ||
010ac81f | 1150 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1151 | return bfd_reloc_overflow; |
1152 | ||
1153 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1154 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1155 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1156 | return bfd_reloc_ok; | |
1157 | ||
1158 | case R_MN10300_16: | |
1159 | value += addend; | |
1160 | ||
010ac81f | 1161 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1162 | return bfd_reloc_overflow; |
1163 | ||
1164 | bfd_put_16 (input_bfd, value, hit_data); | |
1165 | return bfd_reloc_ok; | |
1166 | ||
1167 | case R_MN10300_8: | |
1168 | value += addend; | |
1169 | ||
010ac81f | 1170 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1171 | return bfd_reloc_overflow; |
1172 | ||
1173 | bfd_put_8 (input_bfd, value, hit_data); | |
1174 | return bfd_reloc_ok; | |
1175 | ||
1176 | case R_MN10300_PCREL8: | |
1177 | value -= (input_section->output_section->vma | |
1178 | + input_section->output_offset); | |
1179 | value -= offset; | |
1180 | value += addend; | |
1181 | ||
605d18d4 | 1182 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1183 | return bfd_reloc_overflow; |
1184 | ||
1185 | bfd_put_8 (input_bfd, value, hit_data); | |
1186 | return bfd_reloc_ok; | |
1187 | ||
1188 | case R_MN10300_PCREL16: | |
1189 | value -= (input_section->output_section->vma | |
1190 | + input_section->output_offset); | |
1191 | value -= offset; | |
1192 | value += addend; | |
1193 | ||
605d18d4 | 1194 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1195 | return bfd_reloc_overflow; |
1196 | ||
1197 | bfd_put_16 (input_bfd, value, hit_data); | |
1198 | return bfd_reloc_ok; | |
1199 | ||
1200 | case R_MN10300_PCREL32: | |
1201 | value -= (input_section->output_section->vma | |
1202 | + input_section->output_offset); | |
1203 | value -= offset; | |
1204 | value += addend; | |
1205 | ||
1206 | bfd_put_32 (input_bfd, value, hit_data); | |
1207 | return bfd_reloc_ok; | |
1208 | ||
1209 | case R_MN10300_GNU_VTINHERIT: | |
1210 | case R_MN10300_GNU_VTENTRY: | |
1211 | return bfd_reloc_ok; | |
1212 | ||
03a12831 AO |
1213 | case R_MN10300_GOTPC32: |
1214 | /* Use global offset table as symbol value. */ | |
03a12831 AO |
1215 | value = bfd_get_section_by_name (dynobj, |
1216 | ".got")->output_section->vma; | |
1217 | value -= (input_section->output_section->vma | |
1218 | + input_section->output_offset); | |
1219 | value -= offset; | |
1220 | value += addend; | |
1221 | ||
1222 | bfd_put_32 (input_bfd, value, hit_data); | |
1223 | return bfd_reloc_ok; | |
3b36f7e6 | 1224 | |
03a12831 AO |
1225 | case R_MN10300_GOTPC16: |
1226 | /* Use global offset table as symbol value. */ | |
03a12831 AO |
1227 | value = bfd_get_section_by_name (dynobj, |
1228 | ".got")->output_section->vma; | |
1229 | value -= (input_section->output_section->vma | |
1230 | + input_section->output_offset); | |
1231 | value -= offset; | |
1232 | value += addend; | |
1233 | ||
605d18d4 | 1234 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1235 | return bfd_reloc_overflow; |
1236 | ||
1237 | bfd_put_16 (input_bfd, value, hit_data); | |
1238 | return bfd_reloc_ok; | |
1239 | ||
1240 | case R_MN10300_GOTOFF32: | |
1241 | value -= bfd_get_section_by_name (dynobj, | |
1242 | ".got")->output_section->vma; | |
1243 | value += addend; | |
3b36f7e6 | 1244 | |
03a12831 AO |
1245 | bfd_put_32 (input_bfd, value, hit_data); |
1246 | return bfd_reloc_ok; | |
1247 | ||
1248 | case R_MN10300_GOTOFF24: | |
1249 | value -= bfd_get_section_by_name (dynobj, | |
1250 | ".got")->output_section->vma; | |
1251 | value += addend; | |
3b36f7e6 | 1252 | |
03a12831 AO |
1253 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1254 | return bfd_reloc_overflow; | |
1255 | ||
1256 | bfd_put_8 (input_bfd, value, hit_data); | |
1257 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1258 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1259 | return bfd_reloc_ok; | |
1260 | ||
1261 | case R_MN10300_GOTOFF16: | |
1262 | value -= bfd_get_section_by_name (dynobj, | |
1263 | ".got")->output_section->vma; | |
1264 | value += addend; | |
3b36f7e6 | 1265 | |
605d18d4 | 1266 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1267 | return bfd_reloc_overflow; |
1268 | ||
1269 | bfd_put_16 (input_bfd, value, hit_data); | |
1270 | return bfd_reloc_ok; | |
1271 | ||
1272 | case R_MN10300_PLT32: | |
1273 | if (h != NULL | |
1274 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1275 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1276 | && h->plt.offset != (bfd_vma) -1) | |
1277 | { | |
03a12831 | 1278 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
3b36f7e6 | 1279 | |
03a12831 AO |
1280 | value = (splt->output_section->vma |
1281 | + splt->output_offset | |
1282 | + h->plt.offset) - value; | |
1283 | } | |
1284 | ||
1285 | value -= (input_section->output_section->vma | |
1286 | + input_section->output_offset); | |
1287 | value -= offset; | |
1288 | value += addend; | |
1289 | ||
1290 | bfd_put_32 (input_bfd, value, hit_data); | |
1291 | return bfd_reloc_ok; | |
1292 | ||
1293 | case R_MN10300_PLT16: | |
1294 | if (h != NULL | |
1295 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1296 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1297 | && h->plt.offset != (bfd_vma) -1) | |
1298 | { | |
03a12831 | 1299 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
3b36f7e6 | 1300 | |
03a12831 AO |
1301 | value = (splt->output_section->vma |
1302 | + splt->output_offset | |
1303 | + h->plt.offset) - value; | |
1304 | } | |
1305 | ||
1306 | value -= (input_section->output_section->vma | |
1307 | + input_section->output_offset); | |
1308 | value -= offset; | |
1309 | value += addend; | |
1310 | ||
605d18d4 | 1311 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1312 | return bfd_reloc_overflow; |
1313 | ||
1314 | bfd_put_16 (input_bfd, value, hit_data); | |
1315 | return bfd_reloc_ok; | |
1316 | ||
1317 | case R_MN10300_GOT32: | |
1318 | case R_MN10300_GOT24: | |
1319 | case R_MN10300_GOT16: | |
1320 | { | |
03a12831 | 1321 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
3b36f7e6 | 1322 | |
03a12831 AO |
1323 | if (h != NULL) |
1324 | { | |
1325 | bfd_vma off; | |
1326 | ||
1327 | off = h->got.offset; | |
1328 | BFD_ASSERT (off != (bfd_vma) -1); | |
1329 | ||
1330 | if (! elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1331 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1332 | /* This is actually a static link, or it is a |
1333 | -Bsymbolic link and the symbol is defined | |
1334 | locally, or the symbol was forced to be local | |
1335 | because of a version file. We must initialize | |
1336 | this entry in the global offset table. | |
1337 | ||
1338 | When doing a dynamic link, we create a .rela.got | |
1339 | relocation entry to initialize the value. This | |
1340 | is done in the finish_dynamic_symbol routine. */ | |
1341 | bfd_put_32 (output_bfd, value, | |
1342 | sgot->contents + off); | |
1343 | ||
1344 | value = sgot->output_offset + off; | |
1345 | } | |
1346 | else | |
1347 | { | |
1348 | bfd_vma off; | |
1349 | ||
1350 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1351 | ||
1352 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
1353 | ||
1354 | if (info->shared) | |
1355 | { | |
1356 | asection * srelgot; | |
1357 | Elf_Internal_Rela outrel; | |
1358 | ||
1359 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1360 | BFD_ASSERT (srelgot != NULL); | |
1361 | ||
1362 | outrel.r_offset = (sgot->output_section->vma | |
1363 | + sgot->output_offset | |
1364 | + off); | |
1365 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1366 | outrel.r_addend = value; | |
1367 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1368 | (bfd_byte *) (((Elf32_External_Rela *) |
1369 | srelgot->contents) | |
1370 | + srelgot->reloc_count)); | |
03a12831 AO |
1371 | ++ srelgot->reloc_count; |
1372 | } | |
1373 | ||
1374 | value = sgot->output_offset + off; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | value += addend; | |
1379 | ||
1380 | if (r_type == R_MN10300_GOT32) | |
1381 | { | |
1382 | bfd_put_32 (input_bfd, value, hit_data); | |
1383 | return bfd_reloc_ok; | |
1384 | } | |
1385 | else if (r_type == R_MN10300_GOT24) | |
1386 | { | |
1387 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1388 | return bfd_reloc_overflow; | |
1389 | ||
1390 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1391 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1392 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1393 | return bfd_reloc_ok; | |
1394 | } | |
1395 | else if (r_type == R_MN10300_GOT16) | |
1396 | { | |
605d18d4 | 1397 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1398 | return bfd_reloc_overflow; |
1399 | ||
1400 | bfd_put_16 (input_bfd, value, hit_data); | |
1401 | return bfd_reloc_ok; | |
1402 | } | |
1403 | /* Fall through. */ | |
3b36f7e6 | 1404 | |
252b5132 RH |
1405 | default: |
1406 | return bfd_reloc_notsupported; | |
1407 | } | |
1408 | } | |
252b5132 RH |
1409 | \f |
1410 | /* Relocate an MN10300 ELF section. */ | |
603b7257 | 1411 | |
b34976b6 | 1412 | static bfd_boolean |
603b7257 NC |
1413 | mn10300_elf_relocate_section (bfd *output_bfd, |
1414 | struct bfd_link_info *info, | |
1415 | bfd *input_bfd, | |
1416 | asection *input_section, | |
1417 | bfd_byte *contents, | |
1418 | Elf_Internal_Rela *relocs, | |
1419 | Elf_Internal_Sym *local_syms, | |
1420 | asection **local_sections) | |
252b5132 RH |
1421 | { |
1422 | Elf_Internal_Shdr *symtab_hdr; | |
b2a8e766 | 1423 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
1424 | Elf_Internal_Rela *rel, *relend; |
1425 | ||
1426 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
b2a8e766 | 1427 | sym_hashes = elf_sym_hashes (input_bfd); |
252b5132 RH |
1428 | |
1429 | rel = relocs; | |
1430 | relend = relocs + input_section->reloc_count; | |
1431 | for (; rel < relend; rel++) | |
1432 | { | |
1433 | int r_type; | |
1434 | reloc_howto_type *howto; | |
1435 | unsigned long r_symndx; | |
1436 | Elf_Internal_Sym *sym; | |
1437 | asection *sec; | |
1438 | struct elf32_mn10300_link_hash_entry *h; | |
1439 | bfd_vma relocation; | |
1440 | bfd_reloc_status_type r; | |
1441 | ||
1442 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1443 | r_type = ELF32_R_TYPE (rel->r_info); | |
1444 | howto = elf_mn10300_howto_table + r_type; | |
1445 | ||
1446 | /* Just skip the vtable gc relocs. */ | |
1447 | if (r_type == R_MN10300_GNU_VTINHERIT | |
1448 | || r_type == R_MN10300_GNU_VTENTRY) | |
1449 | continue; | |
1450 | ||
252b5132 RH |
1451 | h = NULL; |
1452 | sym = NULL; | |
1453 | sec = NULL; | |
1454 | if (r_symndx < symtab_hdr->sh_info) | |
1455 | { | |
1456 | sym = local_syms + r_symndx; | |
1457 | sec = local_sections[r_symndx]; | |
8517fae7 | 1458 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1459 | } |
1460 | else | |
1461 | { | |
560e09e9 NC |
1462 | bfd_boolean unresolved_reloc; |
1463 | bfd_boolean warned; | |
1464 | struct elf_link_hash_entry *hh; | |
1465 | ||
b2a8e766 AM |
1466 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1467 | r_symndx, symtab_hdr, sym_hashes, | |
1468 | hh, sec, relocation, | |
1469 | unresolved_reloc, warned); | |
560e09e9 NC |
1470 | |
1471 | h = (struct elf32_mn10300_link_hash_entry *) hh; | |
1472 | ||
1473 | if ((h->root.root.type == bfd_link_hash_defined | |
252b5132 | 1474 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 1475 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
1476 | || r_type == R_MN10300_GOTPC16 |
1477 | || (( r_type == R_MN10300_PLT32 | |
1478 | || r_type == R_MN10300_PLT16) | |
1479 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
1480 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
1481 | && h->root.plt.offset != (bfd_vma) -1) | |
1482 | || (( r_type == R_MN10300_GOT32 | |
1483 | || r_type == R_MN10300_GOT24 | |
1484 | || r_type == R_MN10300_GOT16) | |
1485 | && elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1486 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
146ccdbb | 1487 | || (r_type == R_MN10300_32 |
bfff1642 NC |
1488 | /* _32 relocs in executables force _COPY relocs, |
1489 | such that the address of the symbol ends up | |
1490 | being local. */ | |
efde2f2c | 1491 | && !info->executable |
7e2294f9 | 1492 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
03a12831 AO |
1493 | && ((input_section->flags & SEC_ALLOC) != 0 |
1494 | /* DWARF will emit R_MN10300_32 relocations | |
1495 | in its sections against symbols defined | |
1496 | externally in shared libraries. We can't | |
1497 | do anything with them here. */ | |
1498 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1499 | && h->root.def_dynamic))))) |
560e09e9 NC |
1500 | /* In these cases, we don't need the relocation |
1501 | value. We check specially because in some | |
1502 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 1503 | relocation = 0; |
560e09e9 | 1504 | |
ab96bf03 | 1505 | else if (!info->relocatable && unresolved_reloc) |
560e09e9 | 1506 | (*_bfd_error_handler) |
843fe662 L |
1507 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
1508 | input_bfd, | |
1509 | input_section, | |
1510 | (long) rel->r_offset, | |
1511 | howto->name, | |
1512 | h->root.root.root.string); | |
252b5132 RH |
1513 | } |
1514 | ||
ab96bf03 AM |
1515 | if (sec != NULL && elf_discarded_section (sec)) |
1516 | { | |
1517 | /* For relocs against symbols from removed linkonce sections, | |
1518 | or sections discarded by a linker script, we just want the | |
1519 | section contents zeroed. Avoid any special processing. */ | |
1520 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1521 | rel->r_info = 0; | |
1522 | rel->r_addend = 0; | |
1523 | continue; | |
1524 | } | |
1525 | ||
1526 | if (info->relocatable) | |
1527 | continue; | |
1528 | ||
252b5132 RH |
1529 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1530 | input_section, | |
1531 | contents, rel->r_offset, | |
1532 | relocation, rel->r_addend, | |
603b7257 | 1533 | (struct elf_link_hash_entry *) h, |
03a12831 | 1534 | r_symndx, |
252b5132 RH |
1535 | info, sec, h == NULL); |
1536 | ||
1537 | if (r != bfd_reloc_ok) | |
1538 | { | |
1539 | const char *name; | |
603b7257 | 1540 | const char *msg = NULL; |
252b5132 RH |
1541 | |
1542 | if (h != NULL) | |
1543 | name = h->root.root.root.string; | |
1544 | else | |
1545 | { | |
1546 | name = (bfd_elf_string_from_elf_section | |
1547 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1548 | if (name == NULL || *name == '\0') | |
1549 | name = bfd_section_name (input_bfd, sec); | |
1550 | } | |
1551 | ||
1552 | switch (r) | |
1553 | { | |
1554 | case bfd_reloc_overflow: | |
1555 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1556 | (info, (h ? &h->root.root : NULL), name, |
1557 | howto->name, (bfd_vma) 0, input_bfd, | |
1558 | input_section, rel->r_offset))) | |
b34976b6 | 1559 | return FALSE; |
252b5132 RH |
1560 | break; |
1561 | ||
1562 | case bfd_reloc_undefined: | |
1563 | if (! ((*info->callbacks->undefined_symbol) | |
1564 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1565 | rel->r_offset, TRUE))) |
1566 | return FALSE; | |
252b5132 RH |
1567 | break; |
1568 | ||
1569 | case bfd_reloc_outofrange: | |
1570 | msg = _("internal error: out of range error"); | |
1571 | goto common_error; | |
1572 | ||
1573 | case bfd_reloc_notsupported: | |
1574 | msg = _("internal error: unsupported relocation error"); | |
1575 | goto common_error; | |
1576 | ||
1577 | case bfd_reloc_dangerous: | |
c9b57b7e DD |
1578 | if (r_type == R_MN10300_PCREL32) |
1579 | msg = _("error: inappropriate relocation type for shared" | |
1580 | " library (did you forget -fpic?)"); | |
1581 | else | |
1582 | msg = _("internal error: suspicious relocation type used" | |
1583 | " in shared library"); | |
252b5132 RH |
1584 | goto common_error; |
1585 | ||
1586 | default: | |
1587 | msg = _("internal error: unknown error"); | |
603b7257 | 1588 | /* Fall through. */ |
252b5132 RH |
1589 | |
1590 | common_error: | |
1591 | if (!((*info->callbacks->warning) | |
1592 | (info, msg, name, input_bfd, input_section, | |
1593 | rel->r_offset))) | |
b34976b6 | 1594 | return FALSE; |
252b5132 RH |
1595 | break; |
1596 | } | |
1597 | } | |
1598 | } | |
1599 | ||
b34976b6 | 1600 | return TRUE; |
252b5132 RH |
1601 | } |
1602 | ||
1603 | /* Finish initializing one hash table entry. */ | |
603b7257 | 1604 | |
b34976b6 | 1605 | static bfd_boolean |
603b7257 NC |
1606 | elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry, |
1607 | void * in_args) | |
252b5132 RH |
1608 | { |
1609 | struct elf32_mn10300_link_hash_entry *entry; | |
603b7257 | 1610 | struct bfd_link_info *link_info = (struct bfd_link_info *) in_args; |
252b5132 RH |
1611 | unsigned int byte_count = 0; |
1612 | ||
010ac81f | 1613 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 | 1614 | |
e92d460e AM |
1615 | if (entry->root.root.type == bfd_link_hash_warning) |
1616 | entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; | |
1617 | ||
252b5132 RH |
1618 | /* If we already know we want to convert "call" to "calls" for calls |
1619 | to this symbol, then return now. */ | |
1620 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 1621 | return TRUE; |
252b5132 RH |
1622 | |
1623 | /* If there are no named calls to this symbol, or there's nothing we | |
1055df0f AO |
1624 | can move from the function itself into the "call" instruction, |
1625 | then note that all "call" instructions should be converted into | |
1626 | "calls" instructions and return. If a symbol is available for | |
1627 | dynamic symbol resolution (overridable or overriding), avoid | |
1628 | custom calling conventions. */ | |
252b5132 | 1629 | if (entry->direct_calls == 0 |
1055df0f AO |
1630 | || (entry->stack_size == 0 && entry->movm_args == 0) |
1631 | || (elf_hash_table (link_info)->dynamic_sections_created | |
1632 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL | |
1633 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) | |
252b5132 RH |
1634 | { |
1635 | /* Make a note that we should convert "call" instructions to "calls" | |
1636 | instructions for calls to this symbol. */ | |
1637 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 1638 | return TRUE; |
252b5132 RH |
1639 | } |
1640 | ||
1641 | /* We may be able to move some instructions from the function itself into | |
1642 | the "call" instruction. Count how many bytes we might be able to | |
1643 | eliminate in the function itself. */ | |
1644 | ||
1645 | /* A movm instruction is two bytes. */ | |
1646 | if (entry->movm_args) | |
1647 | byte_count += 2; | |
1648 | ||
1649 | /* Count the insn to allocate stack space too. */ | |
1a101a42 AM |
1650 | if (entry->stack_size > 0) |
1651 | { | |
1652 | if (entry->stack_size <= 128) | |
1653 | byte_count += 3; | |
1654 | else | |
1655 | byte_count += 4; | |
1656 | } | |
252b5132 RH |
1657 | |
1658 | /* If using "call" will result in larger code, then turn all | |
4cc11e76 | 1659 | the associated "call" instructions into "calls" instructions. */ |
252b5132 RH |
1660 | if (byte_count < entry->direct_calls) |
1661 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1662 | ||
1663 | /* This routine never fails. */ | |
b34976b6 | 1664 | return TRUE; |
252b5132 RH |
1665 | } |
1666 | ||
eb13e63f | 1667 | /* Used to count hash table entries. */ |
603b7257 | 1668 | |
eb13e63f DD |
1669 | static bfd_boolean |
1670 | elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, | |
603b7257 | 1671 | void * in_args) |
eb13e63f | 1672 | { |
bfff1642 | 1673 | int *count = (int *) in_args; |
eb13e63f DD |
1674 | |
1675 | (*count) ++; | |
1676 | return TRUE; | |
1677 | } | |
1678 | ||
1679 | /* Used to enumerate hash table entries into a linear array. */ | |
603b7257 | 1680 | |
eb13e63f DD |
1681 | static bfd_boolean |
1682 | elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, | |
603b7257 | 1683 | void * in_args) |
eb13e63f DD |
1684 | { |
1685 | struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; | |
1686 | ||
1687 | **ptr = gen_entry; | |
1688 | (*ptr) ++; | |
1689 | return TRUE; | |
1690 | } | |
1691 | ||
1692 | /* Used to sort the array created by the above. */ | |
603b7257 | 1693 | |
eb13e63f DD |
1694 | static int |
1695 | sort_by_value (const void *va, const void *vb) | |
1696 | { | |
1697 | struct elf32_mn10300_link_hash_entry *a | |
bfff1642 | 1698 | = *(struct elf32_mn10300_link_hash_entry **) va; |
eb13e63f | 1699 | struct elf32_mn10300_link_hash_entry *b |
bfff1642 | 1700 | = *(struct elf32_mn10300_link_hash_entry **) vb; |
eb13e63f DD |
1701 | |
1702 | return a->value - b->value; | |
1703 | } | |
1704 | ||
603b7257 NC |
1705 | /* Compute the stack size and movm arguments for the function |
1706 | referred to by HASH at address ADDR in section with | |
1707 | contents CONTENTS, store the information in the hash table. */ | |
1708 | ||
1709 | static void | |
1710 | compute_function_info (bfd *abfd, | |
1711 | struct elf32_mn10300_link_hash_entry *hash, | |
1712 | bfd_vma addr, | |
1713 | unsigned char *contents) | |
1714 | { | |
1715 | unsigned char byte1, byte2; | |
1716 | /* We only care about a very small subset of the possible prologue | |
1717 | sequences here. Basically we look for: | |
1718 | ||
1719 | movm [d2,d3,a2,a3],sp (optional) | |
1720 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
1721 | 8 bit number) | |
1722 | ||
1723 | If we find anything else, we quit. */ | |
1724 | ||
1725 | /* Look for movm [regs],sp. */ | |
1726 | byte1 = bfd_get_8 (abfd, contents + addr); | |
1727 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
1728 | ||
1729 | if (byte1 == 0xcf) | |
1730 | { | |
1731 | hash->movm_args = byte2; | |
1732 | addr += 2; | |
1733 | byte1 = bfd_get_8 (abfd, contents + addr); | |
1734 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
1735 | } | |
1736 | ||
1737 | /* Now figure out how much stack space will be allocated by the movm | |
1738 | instruction. We need this kept separate from the function's normal | |
1739 | stack space. */ | |
1740 | if (hash->movm_args) | |
1741 | { | |
1742 | /* Space for d2. */ | |
1743 | if (hash->movm_args & 0x80) | |
1744 | hash->movm_stack_size += 4; | |
1745 | ||
1746 | /* Space for d3. */ | |
1747 | if (hash->movm_args & 0x40) | |
1748 | hash->movm_stack_size += 4; | |
1749 | ||
1750 | /* Space for a2. */ | |
1751 | if (hash->movm_args & 0x20) | |
1752 | hash->movm_stack_size += 4; | |
1753 | ||
1754 | /* Space for a3. */ | |
1755 | if (hash->movm_args & 0x10) | |
1756 | hash->movm_stack_size += 4; | |
1757 | ||
1758 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
1759 | if (hash->movm_args & 0x08) | |
1760 | hash->movm_stack_size += 8 * 4; | |
1761 | ||
1762 | if (bfd_get_mach (abfd) == bfd_mach_am33 | |
1763 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
1764 | { | |
1765 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
1766 | if (hash->movm_args & 0x1) | |
1767 | hash->movm_stack_size += 6 * 4; | |
1768 | ||
1769 | /* exreg1 space. e4, e5, e6, e7 */ | |
1770 | if (hash->movm_args & 0x2) | |
1771 | hash->movm_stack_size += 4 * 4; | |
1772 | ||
1773 | /* exreg0 space. e2, e3 */ | |
1774 | if (hash->movm_args & 0x4) | |
1775 | hash->movm_stack_size += 2 * 4; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | /* Now look for the two stack adjustment variants. */ | |
1780 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
1781 | { | |
1782 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
1783 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
1784 | ||
1785 | hash->stack_size = -temp; | |
1786 | } | |
1787 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
1788 | { | |
1789 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
1790 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
1791 | temp = -temp; | |
1792 | ||
1793 | if (temp < 255) | |
1794 | hash->stack_size = temp; | |
1795 | } | |
1796 | ||
1797 | /* If the total stack to be allocated by the call instruction is more | |
1798 | than 255 bytes, then we can't remove the stack adjustment by using | |
1799 | "call" (we might still be able to remove the "movm" instruction. */ | |
1800 | if (hash->stack_size + hash->movm_stack_size > 255) | |
1801 | hash->stack_size = 0; | |
1802 | } | |
1803 | ||
1804 | /* Delete some bytes from a section while relaxing. */ | |
1805 | ||
1806 | static bfd_boolean | |
1807 | mn10300_elf_relax_delete_bytes (bfd *abfd, | |
1808 | asection *sec, | |
1809 | bfd_vma addr, | |
1810 | int count) | |
1811 | { | |
1812 | Elf_Internal_Shdr *symtab_hdr; | |
1813 | unsigned int sec_shndx; | |
1814 | bfd_byte *contents; | |
1815 | Elf_Internal_Rela *irel, *irelend; | |
1816 | Elf_Internal_Rela *irelalign; | |
1817 | bfd_vma toaddr; | |
1818 | Elf_Internal_Sym *isym, *isymend; | |
1819 | struct elf_link_hash_entry **sym_hashes; | |
1820 | struct elf_link_hash_entry **end_hashes; | |
1821 | unsigned int symcount; | |
1822 | ||
1823 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1824 | ||
1825 | contents = elf_section_data (sec)->this_hdr.contents; | |
1826 | ||
603b7257 NC |
1827 | irelalign = NULL; |
1828 | toaddr = sec->size; | |
1829 | ||
1830 | irel = elf_section_data (sec)->relocs; | |
1831 | irelend = irel + sec->reloc_count; | |
1832 | ||
cf4a529b NC |
1833 | if (sec->reloc_count > 0) |
1834 | { | |
1835 | /* If there is an align reloc at the end of the section ignore it. | |
1836 | GAS creates these relocs for reasons of its own, and they just | |
1837 | serve to keep the section artifically inflated. */ | |
1838 | if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN) | |
1839 | --irelend; | |
569006e5 | 1840 | |
cf4a529b | 1841 | /* The deletion must stop at the next ALIGN reloc for an aligment |
b5f5fd96 NC |
1842 | power larger than, or not a multiple of, the number of bytes we |
1843 | are deleting. */ | |
cf4a529b | 1844 | for (; irel < irelend; irel++) |
b5f5fd96 NC |
1845 | { |
1846 | int alignment = 1 << irel->r_addend; | |
1847 | ||
1848 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
1849 | && irel->r_offset > addr | |
1850 | && irel->r_offset < toaddr | |
1851 | && (count < alignment | |
1852 | || alignment % count != 0)) | |
1853 | { | |
1854 | irelalign = irel; | |
1855 | toaddr = irel->r_offset; | |
1856 | break; | |
1857 | } | |
1858 | } | |
cf4a529b | 1859 | } |
569006e5 | 1860 | |
603b7257 NC |
1861 | /* Actually delete the bytes. */ |
1862 | memmove (contents + addr, contents + addr + count, | |
1863 | (size_t) (toaddr - addr - count)); | |
569006e5 NC |
1864 | |
1865 | /* Adjust the section's size if we are shrinking it, or else | |
1866 | pad the bytes between the end of the shrunken region and | |
1867 | the start of the next region with NOP codes. */ | |
1868 | if (irelalign == NULL) | |
1869 | { | |
1870 | sec->size -= count; | |
1871 | /* Include symbols at the end of the section, but | |
1872 | not at the end of a sub-region of the section. */ | |
1873 | toaddr ++; | |
1874 | } | |
1875 | else | |
1876 | { | |
1877 | int i; | |
1878 | ||
1879 | #define NOP_OPCODE 0xcb | |
1880 | ||
1881 | for (i = 0; i < count; i ++) | |
1882 | bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); | |
1883 | } | |
603b7257 NC |
1884 | |
1885 | /* Adjust all the relocs. */ | |
1886 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1887 | { | |
1888 | /* Get the new reloc address. */ | |
1889 | if ((irel->r_offset > addr | |
b5f5fd96 NC |
1890 | && irel->r_offset < toaddr) |
1891 | || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
1892 | && irel->r_offset == toaddr)) | |
603b7257 NC |
1893 | irel->r_offset -= count; |
1894 | } | |
1895 | ||
b5f5fd96 NC |
1896 | /* Adjust the local symbols in the section, reducing their value |
1897 | by the number of bytes deleted. Note - symbols within the deleted | |
1898 | region are moved to the address of the start of the region, which | |
1899 | actually means that they will address the byte beyond the end of | |
1900 | the region once the deletion has been completed. */ | |
603b7257 NC |
1901 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1902 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1903 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1904 | { | |
1905 | if (isym->st_shndx == sec_shndx | |
1906 | && isym->st_value > addr | |
569006e5 | 1907 | && isym->st_value < toaddr) |
b5f5fd96 NC |
1908 | { |
1909 | if (isym->st_value < addr + count) | |
1910 | isym->st_value = addr; | |
1911 | else | |
1912 | isym->st_value -= count; | |
1913 | } | |
bfff1642 NC |
1914 | /* Adjust the function symbol's size as well. */ |
1915 | else if (isym->st_shndx == sec_shndx | |
1916 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC | |
1917 | && isym->st_value + isym->st_size > addr | |
569006e5 | 1918 | && isym->st_value + isym->st_size < toaddr) |
bfff1642 | 1919 | isym->st_size -= count; |
603b7257 NC |
1920 | } |
1921 | ||
1922 | /* Now adjust the global symbols defined in this section. */ | |
1923 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1924 | - symtab_hdr->sh_info); | |
1925 | sym_hashes = elf_sym_hashes (abfd); | |
1926 | end_hashes = sym_hashes + symcount; | |
1927 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1928 | { | |
1929 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1930 | ||
1931 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1932 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1933 | && sym_hash->root.u.def.section == sec | |
1934 | && sym_hash->root.u.def.value > addr | |
569006e5 | 1935 | && sym_hash->root.u.def.value < toaddr) |
b5f5fd96 NC |
1936 | { |
1937 | if (sym_hash->root.u.def.value < addr + count) | |
1938 | sym_hash->root.u.def.value = addr; | |
1939 | else | |
1940 | sym_hash->root.u.def.value -= count; | |
1941 | } | |
bfff1642 NC |
1942 | /* Adjust the function symbol's size as well. */ |
1943 | else if (sym_hash->root.type == bfd_link_hash_defined | |
1944 | && sym_hash->root.u.def.section == sec | |
1945 | && sym_hash->type == STT_FUNC | |
1946 | && sym_hash->root.u.def.value + sym_hash->size > addr | |
569006e5 | 1947 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) |
bfff1642 | 1948 | sym_hash->size -= count; |
603b7257 NC |
1949 | } |
1950 | ||
b5f5fd96 NC |
1951 | /* See if we can move the ALIGN reloc forward. |
1952 | We have adjusted r_offset for it already. */ | |
1953 | if (irelalign != NULL) | |
1954 | { | |
1955 | bfd_vma alignto, alignaddr; | |
1956 | ||
1957 | if ((int) irelalign->r_addend > 0) | |
1958 | { | |
1959 | /* This is the old address. */ | |
1960 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); | |
1961 | /* This is where the align points to now. */ | |
1962 | alignaddr = BFD_ALIGN (irelalign->r_offset, | |
1963 | 1 << irelalign->r_addend); | |
1964 | if (alignaddr < alignto) | |
1965 | /* Tail recursion. */ | |
1966 | return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr, | |
1967 | (int) (alignto - alignaddr)); | |
1968 | } | |
1969 | } | |
1970 | ||
603b7257 NC |
1971 | return TRUE; |
1972 | } | |
1973 | ||
1974 | /* Return TRUE if a symbol exists at the given address, else return | |
1975 | FALSE. */ | |
1976 | ||
1977 | static bfd_boolean | |
1978 | mn10300_elf_symbol_address_p (bfd *abfd, | |
1979 | asection *sec, | |
1980 | Elf_Internal_Sym *isym, | |
1981 | bfd_vma addr) | |
1982 | { | |
1983 | Elf_Internal_Shdr *symtab_hdr; | |
1984 | unsigned int sec_shndx; | |
1985 | Elf_Internal_Sym *isymend; | |
1986 | struct elf_link_hash_entry **sym_hashes; | |
1987 | struct elf_link_hash_entry **end_hashes; | |
1988 | unsigned int symcount; | |
1989 | ||
1990 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1991 | ||
1992 | /* Examine all the symbols. */ | |
1993 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1994 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1995 | if (isym->st_shndx == sec_shndx | |
1996 | && isym->st_value == addr) | |
1997 | return TRUE; | |
1998 | ||
1999 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2000 | - symtab_hdr->sh_info); | |
2001 | sym_hashes = elf_sym_hashes (abfd); | |
2002 | end_hashes = sym_hashes + symcount; | |
2003 | for (; sym_hashes < end_hashes; sym_hashes++) | |
2004 | { | |
2005 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
2006 | ||
2007 | if ((sym_hash->root.type == bfd_link_hash_defined | |
2008 | || sym_hash->root.type == bfd_link_hash_defweak) | |
2009 | && sym_hash->root.u.def.section == sec | |
2010 | && sym_hash->root.u.def.value == addr) | |
2011 | return TRUE; | |
2012 | } | |
2013 | ||
2014 | return FALSE; | |
2015 | } | |
eb13e63f | 2016 | |
252b5132 RH |
2017 | /* This function handles relaxing for the mn10300. |
2018 | ||
4cc11e76 | 2019 | There are quite a few relaxing opportunities available on the mn10300: |
252b5132 RH |
2020 | |
2021 | * calls:32 -> calls:16 2 bytes | |
2022 | * call:32 -> call:16 2 bytes | |
2023 | ||
2024 | * call:32 -> calls:32 1 byte | |
2025 | * call:16 -> calls:16 1 byte | |
2026 | * These are done anytime using "calls" would result | |
2027 | in smaller code, or when necessary to preserve the | |
2028 | meaning of the program. | |
2029 | ||
2030 | * call:32 varies | |
2031 | * call:16 | |
2032 | * In some circumstances we can move instructions | |
2033 | from a function prologue into a "call" instruction. | |
2034 | This is only done if the resulting code is no larger | |
2035 | than the original code. | |
2036 | ||
252b5132 RH |
2037 | * jmp:32 -> jmp:16 2 bytes |
2038 | * jmp:16 -> bra:8 1 byte | |
2039 | ||
2040 | * If the previous instruction is a conditional branch | |
2041 | around the jump/bra, we may be able to reverse its condition | |
2042 | and change its target to the jump's target. The jump/bra | |
2043 | can then be deleted. 2 bytes | |
2044 | ||
2045 | * mov abs32 -> mov abs16 1 or 2 bytes | |
2046 | ||
2047 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
2048 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
2049 | ||
2050 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
2051 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
2052 | ||
2053 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
2054 | and somewhat more difficult to support. */ | |
2055 | ||
b34976b6 | 2056 | static bfd_boolean |
603b7257 NC |
2057 | mn10300_elf_relax_section (bfd *abfd, |
2058 | asection *sec, | |
2059 | struct bfd_link_info *link_info, | |
2060 | bfd_boolean *again) | |
252b5132 RH |
2061 | { |
2062 | Elf_Internal_Shdr *symtab_hdr; | |
2063 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
2064 | Elf_Internal_Rela *irel, *irelend; |
2065 | bfd_byte *contents = NULL; | |
6cdc0ccc | 2066 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 2067 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 2068 | asection *section = sec; |
fc91707c | 2069 | bfd_vma align_gap_adjustment; |
252b5132 | 2070 | |
c8a1f254 NS |
2071 | if (link_info->relocatable) |
2072 | (*link_info->callbacks->einfo) | |
2073 | (_("%P%F: --relax and -r may not be used together\n")); | |
2074 | ||
252b5132 | 2075 | /* Assume nothing changes. */ |
b34976b6 | 2076 | *again = FALSE; |
252b5132 RH |
2077 | |
2078 | /* We need a pointer to the mn10300 specific hash table. */ | |
2079 | hash_table = elf32_mn10300_hash_table (link_info); | |
4dfe6ac6 NC |
2080 | if (hash_table == NULL) |
2081 | return FALSE; | |
252b5132 RH |
2082 | |
2083 | /* Initialize fields in each hash table entry the first time through. */ | |
2084 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
2085 | { | |
2086 | bfd *input_bfd; | |
2087 | ||
2088 | /* Iterate over all the input bfds. */ | |
2089 | for (input_bfd = link_info->input_bfds; | |
2090 | input_bfd != NULL; | |
2091 | input_bfd = input_bfd->link_next) | |
2092 | { | |
252b5132 RH |
2093 | /* We're going to need all the symbols for each bfd. */ |
2094 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 2095 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2096 | { |
6cdc0ccc AM |
2097 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2098 | if (isymbuf == NULL) | |
2099 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2100 | symtab_hdr->sh_info, 0, | |
2101 | NULL, NULL, NULL); | |
2102 | if (isymbuf == NULL) | |
010ac81f KH |
2103 | goto error_return; |
2104 | } | |
252b5132 RH |
2105 | |
2106 | /* Iterate over each section in this bfd. */ | |
2107 | for (section = input_bfd->sections; | |
2108 | section != NULL; | |
2109 | section = section->next) | |
2110 | { | |
2111 | struct elf32_mn10300_link_hash_entry *hash; | |
2112 | Elf_Internal_Sym *sym; | |
86033394 | 2113 | asection *sym_sec = NULL; |
252b5132 RH |
2114 | const char *sym_name; |
2115 | char *new_name; | |
252b5132 | 2116 | |
e948afaf | 2117 | /* If there's nothing to do in this section, skip it. */ |
eb13e63f DD |
2118 | if (! ((section->flags & SEC_RELOC) != 0 |
2119 | && section->reloc_count != 0)) | |
2120 | continue; | |
2121 | if ((section->flags & SEC_ALLOC) == 0) | |
e948afaf AO |
2122 | continue; |
2123 | ||
252b5132 RH |
2124 | /* Get cached copy of section contents if it exists. */ |
2125 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2126 | contents = elf_section_data (section)->this_hdr.contents; | |
eea6121a | 2127 | else if (section->size != 0) |
252b5132 RH |
2128 | { |
2129 | /* Go get them off disk. */ | |
eea6121a AM |
2130 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2131 | &contents)) | |
252b5132 RH |
2132 | goto error_return; |
2133 | } | |
2134 | else | |
6cdc0ccc | 2135 | contents = NULL; |
252b5132 RH |
2136 | |
2137 | /* If there aren't any relocs, then there's nothing to do. */ | |
2138 | if ((section->flags & SEC_RELOC) != 0 | |
2139 | && section->reloc_count != 0) | |
2140 | { | |
252b5132 | 2141 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2142 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2143 | NULL, NULL, | |
2144 | link_info->keep_memory); | |
252b5132 RH |
2145 | if (internal_relocs == NULL) |
2146 | goto error_return; | |
252b5132 RH |
2147 | |
2148 | /* Now examine each relocation. */ | |
2149 | irel = internal_relocs; | |
2150 | irelend = irel + section->reloc_count; | |
2151 | for (; irel < irelend; irel++) | |
2152 | { | |
2153 | long r_type; | |
2154 | unsigned long r_index; | |
2155 | unsigned char code; | |
2156 | ||
2157 | r_type = ELF32_R_TYPE (irel->r_info); | |
2158 | r_index = ELF32_R_SYM (irel->r_info); | |
2159 | ||
010ac81f | 2160 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
2161 | goto error_return; |
2162 | ||
2163 | /* We need the name and hash table entry of the target | |
2164 | symbol! */ | |
2165 | hash = NULL; | |
2166 | sym = NULL; | |
2167 | sym_sec = NULL; | |
2168 | ||
2169 | if (r_index < symtab_hdr->sh_info) | |
2170 | { | |
2171 | /* A local symbol. */ | |
6cdc0ccc | 2172 | Elf_Internal_Sym *isym; |
dc810e39 AM |
2173 | struct elf_link_hash_table *elftab; |
2174 | bfd_size_type amt; | |
252b5132 | 2175 | |
6cdc0ccc AM |
2176 | isym = isymbuf + r_index; |
2177 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2178 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2179 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2180 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2181 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2182 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2183 | else |
2184 | sym_sec | |
2185 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2186 | isym->st_shndx); |
a7c10850 | 2187 | |
9ad5cbcf AM |
2188 | sym_name |
2189 | = bfd_elf_string_from_elf_section (input_bfd, | |
2190 | (symtab_hdr | |
2191 | ->sh_link), | |
6cdc0ccc | 2192 | isym->st_name); |
252b5132 RH |
2193 | |
2194 | /* If it isn't a function, then we don't care | |
2195 | about it. */ | |
6cdc0ccc | 2196 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
2197 | continue; |
2198 | ||
2199 | /* Tack on an ID so we can uniquely identify this | |
2200 | local symbol in the global hash table. */ | |
dc810e39 AM |
2201 | amt = strlen (sym_name) + 10; |
2202 | new_name = bfd_malloc (amt); | |
bfff1642 | 2203 | if (new_name == NULL) |
252b5132 RH |
2204 | goto error_return; |
2205 | ||
f60ca5e3 | 2206 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2207 | sym_name = new_name; |
2208 | ||
dc810e39 AM |
2209 | elftab = &hash_table->static_hash_table->root; |
2210 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2211 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2212 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2213 | free (new_name); |
2214 | } | |
2215 | else | |
2216 | { | |
2217 | r_index -= symtab_hdr->sh_info; | |
2218 | hash = (struct elf32_mn10300_link_hash_entry *) | |
2219 | elf_sym_hashes (input_bfd)[r_index]; | |
2220 | } | |
2221 | ||
eb13e63f DD |
2222 | sym_name = hash->root.root.root.string; |
2223 | if ((section->flags & SEC_CODE) != 0) | |
2224 | { | |
2225 | /* If this is not a "call" instruction, then we | |
2226 | should convert "call" instructions to "calls" | |
2227 | instructions. */ | |
2228 | code = bfd_get_8 (input_bfd, | |
2229 | contents + irel->r_offset - 1); | |
2230 | if (code != 0xdd && code != 0xcd) | |
2231 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2232 | } | |
252b5132 | 2233 | |
6cdc0ccc AM |
2234 | /* If this is a jump/call, then bump the |
2235 | direct_calls counter. Else force "call" to | |
2236 | "calls" conversions. */ | |
252b5132 | 2237 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
2238 | || r_type == R_MN10300_PLT32 |
2239 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
2240 | || r_type == R_MN10300_PCREL16) |
2241 | hash->direct_calls++; | |
2242 | else | |
2243 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | /* Now look at the actual contents to get the stack size, | |
2248 | and a list of what registers were saved in the prologue | |
2249 | (ie movm_args). */ | |
2250 | if ((section->flags & SEC_CODE) != 0) | |
2251 | { | |
6cdc0ccc | 2252 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 2253 | unsigned int sec_shndx; |
6cdc0ccc AM |
2254 | struct elf_link_hash_entry **hashes; |
2255 | struct elf_link_hash_entry **end_hashes; | |
2256 | unsigned int symcount; | |
252b5132 | 2257 | |
9ad5cbcf AM |
2258 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2259 | section); | |
252b5132 | 2260 | |
1055df0f AO |
2261 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2262 | - symtab_hdr->sh_info); | |
2263 | hashes = elf_sym_hashes (input_bfd); | |
2264 | end_hashes = hashes + symcount; | |
2265 | ||
252b5132 RH |
2266 | /* Look at each function defined in this section and |
2267 | update info for that function. */ | |
6cdc0ccc AM |
2268 | isymend = isymbuf + symtab_hdr->sh_info; |
2269 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2270 | { |
6cdc0ccc AM |
2271 | if (isym->st_shndx == sec_shndx |
2272 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 2273 | { |
dc810e39 AM |
2274 | struct elf_link_hash_table *elftab; |
2275 | bfd_size_type amt; | |
1055df0f AO |
2276 | struct elf_link_hash_entry **lhashes = hashes; |
2277 | ||
2278 | /* Skip a local symbol if it aliases a | |
2279 | global one. */ | |
2280 | for (; lhashes < end_hashes; lhashes++) | |
2281 | { | |
2282 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; | |
2283 | if ((hash->root.root.type == bfd_link_hash_defined | |
2284 | || hash->root.root.type == bfd_link_hash_defweak) | |
2285 | && hash->root.root.u.def.section == section | |
2286 | && hash->root.type == STT_FUNC | |
2287 | && hash->root.root.u.def.value == isym->st_value) | |
2288 | break; | |
2289 | } | |
2290 | if (lhashes != end_hashes) | |
2291 | continue; | |
dc810e39 | 2292 | |
6cdc0ccc | 2293 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2294 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2295 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2296 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2297 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2298 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2299 | else |
2300 | sym_sec | |
2301 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2302 | isym->st_shndx); |
252b5132 | 2303 | |
dc810e39 AM |
2304 | sym_name = (bfd_elf_string_from_elf_section |
2305 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 2306 | isym->st_name)); |
252b5132 RH |
2307 | |
2308 | /* Tack on an ID so we can uniquely identify this | |
2309 | local symbol in the global hash table. */ | |
dc810e39 AM |
2310 | amt = strlen (sym_name) + 10; |
2311 | new_name = bfd_malloc (amt); | |
bfff1642 | 2312 | if (new_name == NULL) |
252b5132 RH |
2313 | goto error_return; |
2314 | ||
f60ca5e3 | 2315 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2316 | sym_name = new_name; |
2317 | ||
dc810e39 AM |
2318 | elftab = &hash_table->static_hash_table->root; |
2319 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2320 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2321 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2322 | free (new_name); |
2323 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 2324 | isym->st_value, contents); |
eb13e63f | 2325 | hash->value = isym->st_value; |
252b5132 RH |
2326 | } |
2327 | } | |
2328 | ||
6cdc0ccc | 2329 | for (; hashes < end_hashes; hashes++) |
252b5132 | 2330 | { |
6cdc0ccc | 2331 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2332 | if ((hash->root.root.type == bfd_link_hash_defined |
2333 | || hash->root.root.type == bfd_link_hash_defweak) | |
2334 | && hash->root.root.u.def.section == section | |
9bb351fd | 2335 | && hash->root.type == STT_FUNC) |
252b5132 RH |
2336 | compute_function_info (input_bfd, hash, |
2337 | (hash)->root.root.u.def.value, | |
2338 | contents); | |
2339 | } | |
2340 | } | |
2341 | ||
2342 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2343 | if (internal_relocs != NULL |
2344 | && elf_section_data (section)->relocs != internal_relocs) | |
2345 | free (internal_relocs); | |
2346 | internal_relocs = NULL; | |
252b5132 RH |
2347 | |
2348 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2349 | if (contents != NULL |
2350 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2351 | { |
2352 | if (! link_info->keep_memory) | |
6cdc0ccc | 2353 | free (contents); |
252b5132 RH |
2354 | else |
2355 | { | |
2356 | /* Cache the section contents for elf_link_input_bfd. */ | |
2357 | elf_section_data (section)->this_hdr.contents = contents; | |
2358 | } | |
252b5132 | 2359 | } |
6cdc0ccc | 2360 | contents = NULL; |
9ad5cbcf AM |
2361 | } |
2362 | ||
252b5132 | 2363 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2364 | if (isymbuf != NULL |
2365 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2366 | { |
2367 | if (! link_info->keep_memory) | |
6cdc0ccc | 2368 | free (isymbuf); |
252b5132 RH |
2369 | else |
2370 | { | |
2371 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 2372 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 2373 | } |
252b5132 | 2374 | } |
6cdc0ccc | 2375 | isymbuf = NULL; |
252b5132 RH |
2376 | } |
2377 | ||
2378 | /* Now iterate on each symbol in the hash table and perform | |
2379 | the final initialization steps on each. */ | |
2380 | elf32_mn10300_link_hash_traverse (hash_table, | |
2381 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2382 | link_info); |
252b5132 RH |
2383 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2384 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2385 | link_info); |
252b5132 | 2386 | |
eb13e63f DD |
2387 | { |
2388 | /* This section of code collects all our local symbols, sorts | |
2389 | them by value, and looks for multiple symbols referring to | |
2390 | the same address. For those symbols, the flags are merged. | |
2391 | At this point, the only flag that can be set is | |
2392 | MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags | |
2393 | together. */ | |
2394 | int static_count = 0, i; | |
2395 | struct elf32_mn10300_link_hash_entry **entries; | |
2396 | struct elf32_mn10300_link_hash_entry **ptr; | |
2397 | ||
2398 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2399 | elf32_mn10300_count_hash_table_entries, | |
2400 | &static_count); | |
2401 | ||
603b7257 | 2402 | entries = bfd_malloc (static_count * sizeof (* ptr)); |
eb13e63f DD |
2403 | |
2404 | ptr = entries; | |
2405 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2406 | elf32_mn10300_list_hash_table_entries, | |
603b7257 | 2407 | & ptr); |
eb13e63f | 2408 | |
603b7257 | 2409 | qsort (entries, static_count, sizeof (entries[0]), sort_by_value); |
eb13e63f | 2410 | |
603b7257 | 2411 | for (i = 0; i < static_count - 1; i++) |
eb13e63f DD |
2412 | if (entries[i]->value && entries[i]->value == entries[i+1]->value) |
2413 | { | |
2414 | int v = entries[i]->flags; | |
2415 | int j; | |
603b7257 NC |
2416 | |
2417 | for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 2418 | v |= entries[j]->flags; |
603b7257 NC |
2419 | |
2420 | for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 2421 | entries[j]->flags = v; |
603b7257 NC |
2422 | |
2423 | i = j - 1; | |
eb13e63f DD |
2424 | } |
2425 | } | |
2426 | ||
252b5132 RH |
2427 | /* All entries in the hash table are fully initialized. */ |
2428 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
2429 | ||
2430 | /* Now that everything has been initialized, go through each | |
2431 | code section and delete any prologue insns which will be | |
2432 | redundant because their operations will be performed by | |
2433 | a "call" instruction. */ | |
2434 | for (input_bfd = link_info->input_bfds; | |
2435 | input_bfd != NULL; | |
2436 | input_bfd = input_bfd->link_next) | |
2437 | { | |
9ad5cbcf | 2438 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 2439 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 2440 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2441 | { |
6cdc0ccc AM |
2442 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2443 | if (isymbuf == NULL) | |
2444 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2445 | symtab_hdr->sh_info, 0, | |
2446 | NULL, NULL, NULL); | |
2447 | if (isymbuf == NULL) | |
9ad5cbcf | 2448 | goto error_return; |
010ac81f | 2449 | } |
252b5132 RH |
2450 | |
2451 | /* Walk over each section in this bfd. */ | |
2452 | for (section = input_bfd->sections; | |
2453 | section != NULL; | |
2454 | section = section->next) | |
2455 | { | |
9ad5cbcf | 2456 | unsigned int sec_shndx; |
6cdc0ccc AM |
2457 | Elf_Internal_Sym *isym, *isymend; |
2458 | struct elf_link_hash_entry **hashes; | |
2459 | struct elf_link_hash_entry **end_hashes; | |
2460 | unsigned int symcount; | |
252b5132 RH |
2461 | |
2462 | /* Skip non-code sections and empty sections. */ | |
eea6121a | 2463 | if ((section->flags & SEC_CODE) == 0 || section->size == 0) |
252b5132 RH |
2464 | continue; |
2465 | ||
2466 | if (section->reloc_count != 0) | |
2467 | { | |
010ac81f | 2468 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2469 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2470 | NULL, NULL, | |
2471 | link_info->keep_memory); | |
010ac81f KH |
2472 | if (internal_relocs == NULL) |
2473 | goto error_return; | |
252b5132 RH |
2474 | } |
2475 | ||
2476 | /* Get cached copy of section contents if it exists. */ | |
2477 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2478 | contents = elf_section_data (section)->this_hdr.contents; | |
2479 | else | |
2480 | { | |
2481 | /* Go get them off disk. */ | |
eea6121a AM |
2482 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2483 | &contents)) | |
252b5132 RH |
2484 | goto error_return; |
2485 | } | |
2486 | ||
9ad5cbcf AM |
2487 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2488 | section); | |
252b5132 RH |
2489 | |
2490 | /* Now look for any function in this section which needs | |
2491 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
2492 | isymend = isymbuf + symtab_hdr->sh_info; |
2493 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2494 | { |
252b5132 | 2495 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 2496 | asection *sym_sec = NULL; |
252b5132 | 2497 | const char *sym_name; |
252b5132 | 2498 | char *new_name; |
dc810e39 AM |
2499 | struct elf_link_hash_table *elftab; |
2500 | bfd_size_type amt; | |
252b5132 | 2501 | |
6cdc0ccc | 2502 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
2503 | continue; |
2504 | ||
6cdc0ccc | 2505 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2506 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2507 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2508 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2509 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2510 | sym_sec = bfd_com_section_ptr; |
86033394 | 2511 | else |
9ad5cbcf | 2512 | sym_sec |
6cdc0ccc | 2513 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 2514 | |
9ad5cbcf AM |
2515 | sym_name |
2516 | = bfd_elf_string_from_elf_section (input_bfd, | |
2517 | symtab_hdr->sh_link, | |
6cdc0ccc | 2518 | isym->st_name); |
252b5132 RH |
2519 | |
2520 | /* Tack on an ID so we can uniquely identify this | |
2521 | local symbol in the global hash table. */ | |
dc810e39 AM |
2522 | amt = strlen (sym_name) + 10; |
2523 | new_name = bfd_malloc (amt); | |
bfff1642 | 2524 | if (new_name == NULL) |
252b5132 | 2525 | goto error_return; |
f60ca5e3 | 2526 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2527 | sym_name = new_name; |
2528 | ||
603b7257 NC |
2529 | elftab = & hash_table->static_hash_table->root; |
2530 | sym_hash = (struct elf32_mn10300_link_hash_entry *) | |
2531 | elf_link_hash_lookup (elftab, sym_name, | |
2532 | FALSE, FALSE, FALSE); | |
252b5132 RH |
2533 | |
2534 | free (new_name); | |
2535 | if (sym_hash == NULL) | |
2536 | continue; | |
2537 | ||
9ad5cbcf AM |
2538 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
2539 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2540 | { |
2541 | int bytes = 0; | |
2542 | ||
2543 | /* Note that we've changed things. */ | |
2544 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2545 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2546 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2547 | |
2548 | /* Count how many bytes we're going to delete. */ | |
2549 | if (sym_hash->movm_args) | |
2550 | bytes += 2; | |
2551 | ||
1a101a42 AM |
2552 | if (sym_hash->stack_size > 0) |
2553 | { | |
2554 | if (sym_hash->stack_size <= 128) | |
2555 | bytes += 3; | |
2556 | else | |
2557 | bytes += 4; | |
2558 | } | |
252b5132 RH |
2559 | |
2560 | /* Note that we've deleted prologue bytes for this | |
2561 | function. */ | |
2562 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2563 | ||
2564 | /* Actually delete the bytes. */ | |
2565 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
2566 | section, | |
6cdc0ccc | 2567 | isym->st_value, |
252b5132 RH |
2568 | bytes)) |
2569 | goto error_return; | |
2570 | ||
2571 | /* Something changed. Not strictly necessary, but | |
2572 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2573 | *again = TRUE; |
252b5132 RH |
2574 | } |
2575 | } | |
2576 | ||
2577 | /* Look for any global functions in this section which | |
2578 | need insns deleted from their prologues. */ | |
6cdc0ccc | 2579 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 2580 | - symtab_hdr->sh_info); |
709e685d | 2581 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2582 | end_hashes = hashes + symcount; |
2583 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2584 | { |
252b5132 RH |
2585 | struct elf32_mn10300_link_hash_entry *sym_hash; |
2586 | ||
6cdc0ccc | 2587 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2588 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
2589 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
2590 | && sym_hash->root.root.u.def.section == section | |
2591 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
2592 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2593 | { |
2594 | int bytes = 0; | |
9ad5cbcf | 2595 | bfd_vma symval; |
252b5132 RH |
2596 | |
2597 | /* Note that we've changed things. */ | |
2598 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2599 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2600 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2601 | |
2602 | /* Count how many bytes we're going to delete. */ | |
2603 | if (sym_hash->movm_args) | |
2604 | bytes += 2; | |
2605 | ||
1a101a42 AM |
2606 | if (sym_hash->stack_size > 0) |
2607 | { | |
2608 | if (sym_hash->stack_size <= 128) | |
2609 | bytes += 3; | |
2610 | else | |
2611 | bytes += 4; | |
2612 | } | |
252b5132 RH |
2613 | |
2614 | /* Note that we've deleted prologue bytes for this | |
2615 | function. */ | |
2616 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2617 | ||
2618 | /* Actually delete the bytes. */ | |
9ad5cbcf | 2619 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
2620 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
2621 | section, | |
9ad5cbcf | 2622 | symval, |
252b5132 RH |
2623 | bytes)) |
2624 | goto error_return; | |
2625 | ||
2626 | /* Something changed. Not strictly necessary, but | |
2627 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2628 | *again = TRUE; |
252b5132 RH |
2629 | } |
2630 | } | |
2631 | ||
2632 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2633 | if (internal_relocs != NULL |
2634 | && elf_section_data (section)->relocs != internal_relocs) | |
2635 | free (internal_relocs); | |
2636 | internal_relocs = NULL; | |
252b5132 RH |
2637 | |
2638 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2639 | if (contents != NULL |
2640 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2641 | { |
2642 | if (! link_info->keep_memory) | |
6cdc0ccc | 2643 | free (contents); |
252b5132 | 2644 | else |
603b7257 NC |
2645 | /* Cache the section contents for elf_link_input_bfd. */ |
2646 | elf_section_data (section)->this_hdr.contents = contents; | |
252b5132 | 2647 | } |
6cdc0ccc | 2648 | contents = NULL; |
9ad5cbcf AM |
2649 | } |
2650 | ||
252b5132 | 2651 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2652 | if (isymbuf != NULL |
2653 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2654 | { |
2655 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
2656 | free (isymbuf); |
2657 | else | |
603b7257 NC |
2658 | /* Cache the symbols for elf_link_input_bfd. */ |
2659 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 2660 | } |
6cdc0ccc | 2661 | isymbuf = NULL; |
252b5132 RH |
2662 | } |
2663 | } | |
2664 | ||
252b5132 RH |
2665 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
2666 | contents = NULL; | |
252b5132 | 2667 | internal_relocs = NULL; |
6cdc0ccc AM |
2668 | isymbuf = NULL; |
2669 | /* For error_return. */ | |
2670 | section = sec; | |
252b5132 | 2671 | |
1049f94e | 2672 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
2673 | this section does not have relocs, or if this is not a |
2674 | code section. */ | |
1049f94e | 2675 | if (link_info->relocatable |
252b5132 RH |
2676 | || (sec->flags & SEC_RELOC) == 0 |
2677 | || sec->reloc_count == 0 | |
2678 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 2679 | return TRUE; |
252b5132 | 2680 | |
252b5132 RH |
2681 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2682 | ||
2683 | /* Get a copy of the native relocations. */ | |
603b7257 NC |
2684 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
2685 | link_info->keep_memory); | |
252b5132 RH |
2686 | if (internal_relocs == NULL) |
2687 | goto error_return; | |
252b5132 | 2688 | |
fc91707c NC |
2689 | /* Scan for worst case alignment gap changes. Note that this logic |
2690 | is not ideal; what we should do is run this scan for every | |
2691 | opcode/address range and adjust accordingly, but that's | |
2692 | expensive. Worst case is that for an alignment of N bytes, we | |
2693 | move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc | |
2694 | all before it. Plus, this still doesn't cover cross-section | |
2695 | jumps with section alignment. */ | |
2696 | irelend = internal_relocs + sec->reloc_count; | |
2697 | align_gap_adjustment = 0; | |
2698 | for (irel = internal_relocs; irel < irelend; irel++) | |
2699 | { | |
2700 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN) | |
2701 | { | |
2702 | bfd_vma adj = 1 << irel->r_addend; | |
2703 | bfd_vma aend = irel->r_offset; | |
2704 | ||
2705 | aend = BFD_ALIGN (aend, 1 << irel->r_addend); | |
e23f1610 | 2706 | adj = 2 * adj - adj - 1; |
fc91707c NC |
2707 | |
2708 | /* Record the biggest adjustmnet. Skip any alignment at the | |
2709 | end of our section. */ | |
2710 | if (align_gap_adjustment < adj | |
2711 | && aend < sec->output_section->vma + sec->output_offset + sec->size) | |
2712 | align_gap_adjustment = adj; | |
2713 | } | |
2714 | } | |
2715 | ||
252b5132 RH |
2716 | /* Walk through them looking for relaxing opportunities. */ |
2717 | irelend = internal_relocs + sec->reloc_count; | |
2718 | for (irel = internal_relocs; irel < irelend; irel++) | |
2719 | { | |
2720 | bfd_vma symval; | |
605d18d4 DD |
2721 | bfd_signed_vma jump_offset; |
2722 | asection *sym_sec = NULL; | |
252b5132 RH |
2723 | struct elf32_mn10300_link_hash_entry *h = NULL; |
2724 | ||
2725 | /* If this isn't something that can be relaxed, then ignore | |
2726 | this reloc. */ | |
2727 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
2728 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
2729 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
2730 | continue; | |
2731 | ||
2732 | /* Get the section contents if we haven't done so already. */ | |
2733 | if (contents == NULL) | |
2734 | { | |
2735 | /* Get cached copy if it exists. */ | |
2736 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2737 | contents = elf_section_data (sec)->this_hdr.contents; | |
2738 | else | |
2739 | { | |
2740 | /* Go get them off disk. */ | |
eea6121a | 2741 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2742 | goto error_return; |
2743 | } | |
2744 | } | |
2745 | ||
b34976b6 | 2746 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 2747 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 2748 | { |
6cdc0ccc AM |
2749 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2750 | if (isymbuf == NULL) | |
2751 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2752 | symtab_hdr->sh_info, 0, | |
2753 | NULL, NULL, NULL); | |
2754 | if (isymbuf == NULL) | |
2755 | goto error_return; | |
252b5132 RH |
2756 | } |
2757 | ||
2758 | /* Get the value of the symbol referred to by the reloc. */ | |
2759 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2760 | { | |
6cdc0ccc | 2761 | Elf_Internal_Sym *isym; |
252b5132 RH |
2762 | const char *sym_name; |
2763 | char *new_name; | |
2764 | ||
2765 | /* A local symbol. */ | |
6cdc0ccc AM |
2766 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2767 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2768 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2769 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2770 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2771 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2772 | sym_sec = bfd_com_section_ptr; |
86033394 | 2773 | else |
6cdc0ccc | 2774 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 2775 | |
252b5132 RH |
2776 | sym_name = bfd_elf_string_from_elf_section (abfd, |
2777 | symtab_hdr->sh_link, | |
6cdc0ccc | 2778 | isym->st_name); |
252b5132 | 2779 | |
dd90f1b2 | 2780 | if ((sym_sec->flags & SEC_MERGE) |
dd90f1b2 DD |
2781 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
2782 | { | |
2709f570 NC |
2783 | symval = isym->st_value; |
2784 | ||
2785 | /* GAS may reduce relocations against symbols in SEC_MERGE | |
2786 | sections to a relocation against the section symbol when | |
2787 | the original addend was zero. When the reloc is against | |
2788 | a section symbol we should include the addend in the | |
2789 | offset passed to _bfd_merged_section_offset, since the | |
2790 | location of interest is the original symbol. On the | |
2791 | other hand, an access to "sym+addend" where "sym" is not | |
2792 | a section symbol should not include the addend; Such an | |
2793 | access is presumed to be an offset from "sym"; The | |
2794 | location of interest is just "sym". */ | |
2795 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
2796 | symval += irel->r_addend; | |
2797 | ||
281153f3 NC |
2798 | symval = _bfd_merged_section_offset (abfd, & sym_sec, |
2799 | elf_section_data (sym_sec)->sec_info, | |
2800 | symval); | |
2709f570 NC |
2801 | |
2802 | if (ELF_ST_TYPE (isym->st_info) != STT_SECTION) | |
2803 | symval += irel->r_addend; | |
2804 | ||
2805 | symval += sym_sec->output_section->vma | |
2806 | + sym_sec->output_offset - irel->r_addend; | |
dd90f1b2 DD |
2807 | } |
2808 | else | |
bfff1642 NC |
2809 | symval = (isym->st_value |
2810 | + sym_sec->output_section->vma | |
2811 | + sym_sec->output_offset); | |
603b7257 | 2812 | |
252b5132 RH |
2813 | /* Tack on an ID so we can uniquely identify this |
2814 | local symbol in the global hash table. */ | |
dc810e39 | 2815 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
bfff1642 | 2816 | if (new_name == NULL) |
252b5132 | 2817 | goto error_return; |
f60ca5e3 | 2818 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2819 | sym_name = new_name; |
2820 | ||
2821 | h = (struct elf32_mn10300_link_hash_entry *) | |
2822 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 2823 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
2824 | free (new_name); |
2825 | } | |
2826 | else | |
2827 | { | |
2828 | unsigned long indx; | |
2829 | ||
2830 | /* An external symbol. */ | |
2831 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2832 | h = (struct elf32_mn10300_link_hash_entry *) | |
2833 | (elf_sym_hashes (abfd)[indx]); | |
2834 | BFD_ASSERT (h != NULL); | |
2835 | if (h->root.root.type != bfd_link_hash_defined | |
2836 | && h->root.root.type != bfd_link_hash_defweak) | |
603b7257 NC |
2837 | /* This appears to be a reference to an undefined |
2838 | symbol. Just ignore it--it will be caught by the | |
2839 | regular reloc processing. */ | |
2840 | continue; | |
252b5132 | 2841 | |
bfff1642 NC |
2842 | /* Check for a reference to a discarded symbol and ignore it. */ |
2843 | if (h->root.root.u.def.section->output_section == NULL) | |
2844 | continue; | |
2845 | ||
605d18d4 DD |
2846 | sym_sec = h->root.root.u.def.section->output_section; |
2847 | ||
252b5132 RH |
2848 | symval = (h->root.root.u.def.value |
2849 | + h->root.root.u.def.section->output_section->vma | |
2850 | + h->root.root.u.def.section->output_offset); | |
2851 | } | |
2852 | ||
2853 | /* For simplicity of coding, we are going to modify the section | |
2854 | contents, the section relocs, and the BFD symbol table. We | |
2855 | must tell the rest of the code not to free up this | |
2856 | information. It would be possible to instead create a table | |
2857 | of changes which have to be made, as is done in coff-mips.c; | |
2858 | that would be more work, but would require less memory when | |
2859 | the linker is run. */ | |
2860 | ||
2861 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
2862 | branch/call, also deal with "call" -> "calls" conversions and | |
2863 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
2864 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
2865 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
2866 | { |
2867 | bfd_vma value = symval; | |
2868 | ||
03a12831 AO |
2869 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
2870 | && h != NULL | |
2871 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2872 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2873 | && h->root.plt.offset != (bfd_vma) -1) | |
2874 | { | |
2875 | asection * splt; | |
2876 | ||
2877 | splt = bfd_get_section_by_name (elf_hash_table (link_info) | |
2878 | ->dynobj, ".plt"); | |
3b36f7e6 | 2879 | |
03a12831 AO |
2880 | value = ((splt->output_section->vma |
2881 | + splt->output_offset | |
2882 | + h->root.plt.offset) | |
2883 | - (sec->output_section->vma | |
2884 | + sec->output_offset | |
2885 | + irel->r_offset)); | |
2886 | } | |
2887 | ||
252b5132 RH |
2888 | /* If we've got a "call" instruction that needs to be turned |
2889 | into a "calls" instruction, do so now. It saves a byte. */ | |
2890 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2891 | { | |
2892 | unsigned char code; | |
2893 | ||
2894 | /* Get the opcode. */ | |
2895 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2896 | ||
2897 | /* Make sure we're working with a "call" instruction! */ | |
2898 | if (code == 0xdd) | |
2899 | { | |
2900 | /* Note that we've changed the relocs, section contents, | |
2901 | etc. */ | |
2902 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2903 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2904 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2905 | |
2906 | /* Fix the opcode. */ | |
2907 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
2908 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2909 | ||
2910 | /* Fix irel->r_offset and irel->r_addend. */ | |
2911 | irel->r_offset += 1; | |
2912 | irel->r_addend += 1; | |
2913 | ||
2914 | /* Delete one byte of data. */ | |
2915 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2916 | irel->r_offset + 3, 1)) | |
2917 | goto error_return; | |
2918 | ||
2919 | /* That will change things, so, we should relax again. | |
2920 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2921 | *again = TRUE; |
252b5132 RH |
2922 | } |
2923 | } | |
2924 | else if (h) | |
2925 | { | |
2926 | /* We've got a "call" instruction which needs some data | |
2927 | from target function filled in. */ | |
2928 | unsigned char code; | |
2929 | ||
2930 | /* Get the opcode. */ | |
2931 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2932 | ||
2933 | /* Insert data from the target function into the "call" | |
2934 | instruction if needed. */ | |
2935 | if (code == 0xdd) | |
2936 | { | |
2937 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
2938 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2939 | contents + irel->r_offset + 5); | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | /* Deal with pc-relative gunk. */ | |
2944 | value -= (sec->output_section->vma + sec->output_offset); | |
2945 | value -= irel->r_offset; | |
2946 | value += irel->r_addend; | |
2947 | ||
2948 | /* See if the value will fit in 16 bits, note the high value is | |
2949 | 0x7fff + 2 as the target will be two bytes closer if we are | |
605d18d4 DD |
2950 | able to relax, if it's in the same section. */ |
2951 | if (sec->output_section == sym_sec->output_section) | |
2952 | jump_offset = 0x8001; | |
2953 | else | |
2954 | jump_offset = 0x7fff; | |
2955 | ||
fc91707c NC |
2956 | /* Account for jumps across alignment boundaries using |
2957 | align_gap_adjustment. */ | |
605d18d4 | 2958 | if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment |
fc91707c | 2959 | && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment)) |
252b5132 RH |
2960 | { |
2961 | unsigned char code; | |
2962 | ||
2963 | /* Get the opcode. */ | |
2964 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2965 | ||
2966 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
2967 | continue; | |
2968 | ||
2969 | /* Note that we've changed the relocs, section contents, etc. */ | |
2970 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2971 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2972 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2973 | |
2974 | /* Fix the opcode. */ | |
2975 | if (code == 0xdc) | |
2976 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
2977 | else if (code == 0xdd) | |
2978 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
2979 | else if (code == 0xff) | |
2980 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2981 | ||
2982 | /* Fix the relocation's type. */ | |
2983 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2984 | (ELF32_R_TYPE (irel->r_info) |
2985 | == (int) R_MN10300_PLT32) | |
2986 | ? R_MN10300_PLT16 : | |
252b5132 RH |
2987 | R_MN10300_PCREL16); |
2988 | ||
2989 | /* Delete two bytes of data. */ | |
2990 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2991 | irel->r_offset + 1, 2)) | |
2992 | goto error_return; | |
2993 | ||
2994 | /* That will change things, so, we should relax again. | |
2995 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2996 | *again = TRUE; |
252b5132 RH |
2997 | } |
2998 | } | |
2999 | ||
3000 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
3001 | branch. */ | |
3002 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
3003 | { | |
3004 | bfd_vma value = symval; | |
3005 | ||
3006 | /* If we've got a "call" instruction that needs to be turned | |
3007 | into a "calls" instruction, do so now. It saves a byte. */ | |
3008 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
3009 | { | |
3010 | unsigned char code; | |
3011 | ||
3012 | /* Get the opcode. */ | |
3013 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3014 | ||
3015 | /* Make sure we're working with a "call" instruction! */ | |
3016 | if (code == 0xcd) | |
3017 | { | |
3018 | /* Note that we've changed the relocs, section contents, | |
3019 | etc. */ | |
3020 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3021 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3022 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3023 | |
3024 | /* Fix the opcode. */ | |
3025 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
3026 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
3027 | ||
3028 | /* Fix irel->r_offset and irel->r_addend. */ | |
3029 | irel->r_offset += 1; | |
3030 | irel->r_addend += 1; | |
3031 | ||
3032 | /* Delete one byte of data. */ | |
3033 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3034 | irel->r_offset + 1, 1)) | |
3035 | goto error_return; | |
3036 | ||
3037 | /* That will change things, so, we should relax again. | |
3038 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3039 | *again = TRUE; |
252b5132 RH |
3040 | } |
3041 | } | |
3042 | else if (h) | |
3043 | { | |
3044 | unsigned char code; | |
3045 | ||
3046 | /* Get the opcode. */ | |
3047 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3048 | ||
3049 | /* Insert data from the target function into the "call" | |
3050 | instruction if needed. */ | |
3051 | if (code == 0xcd) | |
3052 | { | |
3053 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
3054 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
3055 | contents + irel->r_offset + 3); | |
3056 | } | |
3057 | } | |
3058 | ||
3059 | /* Deal with pc-relative gunk. */ | |
3060 | value -= (sec->output_section->vma + sec->output_offset); | |
3061 | value -= irel->r_offset; | |
3062 | value += irel->r_addend; | |
3063 | ||
3064 | /* See if the value will fit in 8 bits, note the high value is | |
3065 | 0x7f + 1 as the target will be one bytes closer if we are | |
3066 | able to relax. */ | |
010ac81f | 3067 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
3068 | { |
3069 | unsigned char code; | |
3070 | ||
3071 | /* Get the opcode. */ | |
3072 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3073 | ||
3074 | if (code != 0xcc) | |
3075 | continue; | |
3076 | ||
3077 | /* Note that we've changed the relocs, section contents, etc. */ | |
3078 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3079 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3080 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3081 | |
3082 | /* Fix the opcode. */ | |
3083 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
3084 | ||
3085 | /* Fix the relocation's type. */ | |
3086 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3087 | R_MN10300_PCREL8); | |
3088 | ||
3089 | /* Delete one byte of data. */ | |
3090 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3091 | irel->r_offset + 1, 1)) | |
3092 | goto error_return; | |
3093 | ||
3094 | /* That will change things, so, we should relax again. | |
3095 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3096 | *again = TRUE; |
252b5132 RH |
3097 | } |
3098 | } | |
3099 | ||
3100 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
3101 | which immediately follows a conditional 8 bit pc-relative | |
3102 | branch around the unconditional branch. | |
3103 | ||
3104 | original: new: | |
3105 | bCC lab1 bCC' lab2 | |
3106 | bra lab2 | |
3107 | lab1: lab1: | |
3108 | ||
252b5132 RH |
3109 | This happens when the bCC can't reach lab2 at assembly time, |
3110 | but due to other relaxations it can reach at link time. */ | |
3111 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
3112 | { | |
3113 | Elf_Internal_Rela *nrel; | |
3114 | bfd_vma value = symval; | |
3115 | unsigned char code; | |
3116 | ||
3117 | /* Deal with pc-relative gunk. */ | |
3118 | value -= (sec->output_section->vma + sec->output_offset); | |
3119 | value -= irel->r_offset; | |
3120 | value += irel->r_addend; | |
3121 | ||
3122 | /* Do nothing if this reloc is the last byte in the section. */ | |
eea6121a | 3123 | if (irel->r_offset == sec->size) |
252b5132 RH |
3124 | continue; |
3125 | ||
3126 | /* See if the next instruction is an unconditional pc-relative | |
3127 | branch, more often than not this test will fail, so we | |
3128 | test it first to speed things up. */ | |
3129 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
3130 | if (code != 0xca) | |
3131 | continue; | |
3132 | ||
3133 | /* Also make sure the next relocation applies to the next | |
3134 | instruction and that it's a pc-relative 8 bit branch. */ | |
3135 | nrel = irel + 1; | |
3136 | if (nrel == irelend | |
3137 | || irel->r_offset + 2 != nrel->r_offset | |
3138 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
3139 | continue; | |
3140 | ||
3141 | /* Make sure our destination immediately follows the | |
3142 | unconditional branch. */ | |
3143 | if (symval != (sec->output_section->vma + sec->output_offset | |
3144 | + irel->r_offset + 3)) | |
3145 | continue; | |
3146 | ||
3147 | /* Now make sure we are a conditional branch. This may not | |
3148 | be necessary, but why take the chance. | |
3149 | ||
3150 | Note these checks assume that R_MN10300_PCREL8 relocs | |
3151 | only occur on bCC and bCCx insns. If they occured | |
3152 | elsewhere, we'd need to know the start of this insn | |
3153 | for this check to be accurate. */ | |
3154 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3155 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
3156 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
3157 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
3158 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
3159 | && code != 0xea && code != 0xeb) | |
3160 | continue; | |
3161 | ||
3162 | /* We also have to be sure there is no symbol/label | |
3163 | at the unconditional branch. */ | |
6cdc0ccc AM |
3164 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
3165 | irel->r_offset + 1)) | |
252b5132 RH |
3166 | continue; |
3167 | ||
3168 | /* Note that we've changed the relocs, section contents, etc. */ | |
3169 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3170 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3171 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3172 | |
3173 | /* Reverse the condition of the first branch. */ | |
3174 | switch (code) | |
3175 | { | |
010ac81f KH |
3176 | case 0xc8: |
3177 | code = 0xc9; | |
3178 | break; | |
3179 | case 0xc9: | |
3180 | code = 0xc8; | |
3181 | break; | |
3182 | case 0xc0: | |
3183 | code = 0xc2; | |
3184 | break; | |
3185 | case 0xc2: | |
3186 | code = 0xc0; | |
3187 | break; | |
3188 | case 0xc3: | |
3189 | code = 0xc1; | |
3190 | break; | |
3191 | case 0xc1: | |
3192 | code = 0xc3; | |
3193 | break; | |
3194 | case 0xc4: | |
3195 | code = 0xc6; | |
3196 | break; | |
3197 | case 0xc6: | |
3198 | code = 0xc4; | |
3199 | break; | |
3200 | case 0xc7: | |
3201 | code = 0xc5; | |
3202 | break; | |
3203 | case 0xc5: | |
3204 | code = 0xc7; | |
3205 | break; | |
3206 | case 0xe8: | |
3207 | code = 0xe9; | |
3208 | break; | |
3209 | case 0x9d: | |
3210 | code = 0xe8; | |
3211 | break; | |
3212 | case 0xea: | |
3213 | code = 0xeb; | |
3214 | break; | |
3215 | case 0xeb: | |
3216 | code = 0xea; | |
3217 | break; | |
252b5132 RH |
3218 | } |
3219 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3220 | ||
3221 | /* Set the reloc type and symbol for the first branch | |
3222 | from the second branch. */ | |
3223 | irel->r_info = nrel->r_info; | |
3224 | ||
3225 | /* Make the reloc for the second branch a null reloc. */ | |
3226 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
3227 | R_MN10300_NONE); | |
3228 | ||
3229 | /* Delete two bytes of data. */ | |
3230 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3231 | irel->r_offset + 1, 2)) | |
3232 | goto error_return; | |
3233 | ||
3234 | /* That will change things, so, we should relax again. | |
3235 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3236 | *again = TRUE; |
252b5132 RH |
3237 | } |
3238 | ||
31f8dc8f JL |
3239 | /* Try to turn a 24 immediate, displacement or absolute address |
3240 | into a 8 immediate, displacement or absolute address. */ | |
3241 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
3242 | { | |
3243 | bfd_vma value = symval; | |
3244 | value += irel->r_addend; | |
3245 | ||
3246 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 3247 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
3248 | { |
3249 | unsigned char code; | |
3250 | ||
3251 | /* AM33 insns which have 24 operands are 6 bytes long and | |
3252 | will have 0xfd as the first byte. */ | |
3253 | ||
3254 | /* Get the first opcode. */ | |
3255 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3256 | ||
3257 | if (code == 0xfd) | |
3258 | { | |
010ac81f KH |
3259 | /* Get the second opcode. */ |
3260 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3261 | |
3262 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3263 | equivalent instructions exists. */ | |
3b36f7e6 | 3264 | if (code != 0x6b && code != 0x7b |
31f8dc8f JL |
3265 | && code != 0x8b && code != 0x9b |
3266 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
3267 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3268 | || (code & 0x0f) == 0x0e)) | |
3269 | { | |
3270 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3271 | move the value out of high mem and thus not fit |
3272 | in a signed 8bit value. This is currently over | |
3273 | conservative. */ | |
31f8dc8f JL |
3274 | if ((value & 0x80) == 0) |
3275 | { | |
3276 | /* Note that we've changed the relocation contents, | |
3277 | etc. */ | |
3278 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3279 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3280 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3281 | |
3282 | /* Fix the opcode. */ | |
3283 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
3284 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3285 | ||
3286 | /* Fix the relocation's type. */ | |
010ac81f KH |
3287 | irel->r_info = |
3288 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3289 | R_MN10300_8); | |
31f8dc8f JL |
3290 | |
3291 | /* Delete two bytes of data. */ | |
3292 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3293 | irel->r_offset + 1, 2)) | |
3294 | goto error_return; | |
3295 | ||
3296 | /* That will change things, so, we should relax | |
3297 | again. Note that this is not required, and it | |
010ac81f | 3298 | may be slow. */ |
b34976b6 | 3299 | *again = TRUE; |
31f8dc8f JL |
3300 | break; |
3301 | } | |
3302 | } | |
31f8dc8f JL |
3303 | } |
3304 | } | |
3305 | } | |
252b5132 RH |
3306 | |
3307 | /* Try to turn a 32bit immediate, displacement or absolute address | |
3308 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
3309 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
3310 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
eb13e63f | 3311 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
252b5132 RH |
3312 | { |
3313 | bfd_vma value = symval; | |
03a12831 AO |
3314 | |
3315 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
3316 | { | |
3317 | asection * sgot; | |
3318 | ||
3319 | sgot = bfd_get_section_by_name (elf_hash_table (link_info) | |
3320 | ->dynobj, ".got"); | |
3321 | ||
3322 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) | |
3323 | { | |
3324 | value = sgot->output_offset; | |
3325 | ||
3326 | if (h) | |
3327 | value += h->root.got.offset; | |
3328 | else | |
3329 | value += (elf_local_got_offsets | |
3330 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
3331 | } | |
3332 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
3333 | value -= sgot->output_section->vma; | |
3334 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
3335 | value = (sgot->output_section->vma | |
3336 | - (sec->output_section->vma | |
3337 | + sec->output_offset | |
3338 | + irel->r_offset)); | |
3339 | else | |
3340 | abort (); | |
3341 | } | |
3342 | ||
252b5132 RH |
3343 | value += irel->r_addend; |
3344 | ||
31f8dc8f JL |
3345 | /* See if the value will fit in 24 bits. |
3346 | We allow any 16bit match here. We prune those we can't | |
3347 | handle below. */ | |
010ac81f | 3348 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
3349 | { |
3350 | unsigned char code; | |
3351 | ||
3352 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
3353 | will have 0xfe as the first byte. */ | |
3354 | ||
3355 | /* Get the first opcode. */ | |
3356 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3357 | ||
3358 | if (code == 0xfe) | |
3359 | { | |
3b36f7e6 AM |
3360 | /* Get the second opcode. */ |
3361 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3362 | |
3363 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
3364 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3365 | equivalent instructions exists. */ | |
010ac81f | 3366 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 3367 | && code != 0x8b && code != 0x9b |
03a12831 AO |
3368 | && (ELF32_R_TYPE (irel->r_info) |
3369 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
3370 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3371 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3372 | || (code & 0x0f) == 0x0e)) | |
3373 | { | |
3374 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3375 | move the value out of high mem and thus not fit |
3376 | in a signed 16bit value. This is currently over | |
3377 | conservative. */ | |
31f8dc8f JL |
3378 | if ((value & 0x8000) == 0) |
3379 | { | |
3380 | /* Note that we've changed the relocation contents, | |
3381 | etc. */ | |
3382 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3383 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3384 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3385 | |
3386 | /* Fix the opcode. */ | |
3387 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
3388 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3389 | ||
3390 | /* Fix the relocation's type. */ | |
010ac81f KH |
3391 | irel->r_info = |
3392 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3393 | (ELF32_R_TYPE (irel->r_info) |
3394 | == (int) R_MN10300_GOTOFF32) | |
3395 | ? R_MN10300_GOTOFF24 | |
3396 | : (ELF32_R_TYPE (irel->r_info) | |
3397 | == (int) R_MN10300_GOT32) | |
3398 | ? R_MN10300_GOT24 : | |
010ac81f | 3399 | R_MN10300_24); |
31f8dc8f JL |
3400 | |
3401 | /* Delete one byte of data. */ | |
3402 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3403 | irel->r_offset + 3, 1)) | |
3404 | goto error_return; | |
3405 | ||
3406 | /* That will change things, so, we should relax | |
3407 | again. Note that this is not required, and it | |
010ac81f | 3408 | may be slow. */ |
b34976b6 | 3409 | *again = TRUE; |
31f8dc8f JL |
3410 | break; |
3411 | } | |
3412 | } | |
31f8dc8f JL |
3413 | } |
3414 | } | |
252b5132 RH |
3415 | |
3416 | /* See if the value will fit in 16 bits. | |
3417 | We allow any 16bit match here. We prune those we can't | |
3418 | handle below. */ | |
010ac81f | 3419 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
3420 | { |
3421 | unsigned char code; | |
3422 | ||
3423 | /* Most insns which have 32bit operands are 6 bytes long; | |
3424 | exceptions are pcrel insns and bit insns. | |
3425 | ||
3426 | We handle pcrel insns above. We don't bother trying | |
3427 | to handle the bit insns here. | |
3428 | ||
3429 | The first byte of the remaining insns will be 0xfc. */ | |
3430 | ||
3431 | /* Get the first opcode. */ | |
3432 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
3433 | ||
3434 | if (code != 0xfc) | |
3435 | continue; | |
3436 | ||
3437 | /* Get the second opcode. */ | |
3438 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3439 | ||
3440 | if ((code & 0xf0) < 0x80) | |
3441 | switch (code & 0xf0) | |
3442 | { | |
3443 | /* mov (d32,am),dn -> mov (d32,am),dn | |
3444 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3445 | mov (d32,am),an -> mov (d32,am),an | |
3446 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3447 | movbu (d32,am),dn -> movbu (d32,am),dn | |
3448 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
3449 | movhu (d32,am),dn -> movhu (d32,am),dn | |
3450 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
3451 | case 0x00: | |
3452 | case 0x10: | |
3453 | case 0x20: | |
3454 | case 0x30: | |
3455 | case 0x40: | |
3456 | case 0x50: | |
3457 | case 0x60: | |
3458 | case 0x70: | |
3459 | /* Not safe if the high bit is on as relaxing may | |
3460 | move the value out of high mem and thus not fit | |
3461 | in a signed 16bit value. */ | |
3462 | if (code == 0xcc | |
3463 | && (value & 0x8000)) | |
3464 | continue; | |
3465 | ||
3466 | /* Note that we've changed the relocation contents, etc. */ | |
3467 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3468 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3469 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3470 | |
3471 | /* Fix the opcode. */ | |
3472 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3473 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3474 | ||
3475 | /* Fix the relocation's type. */ | |
3476 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3477 | (ELF32_R_TYPE (irel->r_info) |
3478 | == (int) R_MN10300_GOTOFF32) | |
3479 | ? R_MN10300_GOTOFF16 | |
3480 | : (ELF32_R_TYPE (irel->r_info) | |
3481 | == (int) R_MN10300_GOT32) | |
3482 | ? R_MN10300_GOT16 | |
3483 | : (ELF32_R_TYPE (irel->r_info) | |
3484 | == (int) R_MN10300_GOTPC32) | |
3485 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3486 | R_MN10300_16); |
3487 | ||
3488 | /* Delete two bytes of data. */ | |
3489 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3490 | irel->r_offset + 2, 2)) | |
3491 | goto error_return; | |
3492 | ||
3493 | /* That will change things, so, we should relax again. | |
3494 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3495 | *again = TRUE; |
252b5132 RH |
3496 | break; |
3497 | } | |
3498 | else if ((code & 0xf0) == 0x80 | |
3499 | || (code & 0xf0) == 0x90) | |
3500 | switch (code & 0xf3) | |
3501 | { | |
3502 | /* mov dn,(abs32) -> mov dn,(abs16) | |
3503 | movbu dn,(abs32) -> movbu dn,(abs16) | |
3504 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
3505 | case 0x81: | |
3506 | case 0x82: | |
3507 | case 0x83: | |
3508 | /* Note that we've changed the relocation contents, 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 | if ((code & 0xf3) == 0x81) | |
3514 | code = 0x01 + (code & 0x0c); | |
3515 | else if ((code & 0xf3) == 0x82) | |
3516 | code = 0x02 + (code & 0x0c); | |
3517 | else if ((code & 0xf3) == 0x83) | |
3518 | code = 0x03 + (code & 0x0c); | |
3519 | else | |
3520 | abort (); | |
3521 | ||
3522 | /* Fix the opcode. */ | |
3523 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3524 | ||
3525 | /* Fix the relocation's type. */ | |
3526 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3527 | (ELF32_R_TYPE (irel->r_info) |
3528 | == (int) R_MN10300_GOTOFF32) | |
3529 | ? R_MN10300_GOTOFF16 | |
3530 | : (ELF32_R_TYPE (irel->r_info) | |
3531 | == (int) R_MN10300_GOT32) | |
3532 | ? R_MN10300_GOT16 | |
3533 | : (ELF32_R_TYPE (irel->r_info) | |
3534 | == (int) R_MN10300_GOTPC32) | |
3535 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3536 | R_MN10300_16); |
3537 | ||
3538 | /* The opcode got shorter too, so we have to fix the | |
3539 | addend and offset too! */ | |
3540 | irel->r_offset -= 1; | |
3541 | ||
3542 | /* Delete three bytes of data. */ | |
3543 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3544 | irel->r_offset + 1, 3)) | |
3545 | goto error_return; | |
3546 | ||
3547 | /* That will change things, so, we should relax again. | |
3548 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3549 | *again = TRUE; |
252b5132 RH |
3550 | break; |
3551 | ||
3552 | /* mov am,(abs32) -> mov am,(abs16) | |
3553 | mov am,(d32,sp) -> mov am,(d16,sp) | |
3554 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
3555 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
3556 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
3557 | case 0x80: | |
3558 | case 0x90: | |
3559 | case 0x91: | |
3560 | case 0x92: | |
3561 | case 0x93: | |
2a0fa943 AO |
3562 | /* sp-based offsets are zero-extended. */ |
3563 | if (code >= 0x90 && code <= 0x93 | |
bfff1642 | 3564 | && (long) value < 0) |
2a0fa943 AO |
3565 | continue; |
3566 | ||
252b5132 RH |
3567 | /* Note that we've changed the relocation contents, etc. */ |
3568 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3569 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3570 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3571 | |
3572 | /* Fix the opcode. */ | |
3573 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3574 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3575 | ||
3576 | /* Fix the relocation's type. */ | |
3577 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3578 | (ELF32_R_TYPE (irel->r_info) |
3579 | == (int) R_MN10300_GOTOFF32) | |
3580 | ? R_MN10300_GOTOFF16 | |
3581 | : (ELF32_R_TYPE (irel->r_info) | |
3582 | == (int) R_MN10300_GOT32) | |
3583 | ? R_MN10300_GOT16 | |
3584 | : (ELF32_R_TYPE (irel->r_info) | |
3585 | == (int) R_MN10300_GOTPC32) | |
3586 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3587 | R_MN10300_16); |
3588 | ||
3589 | /* Delete two bytes of data. */ | |
3590 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3591 | irel->r_offset + 2, 2)) | |
3592 | goto error_return; | |
3593 | ||
3594 | /* That will change things, so, we should relax again. | |
3595 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3596 | *again = TRUE; |
252b5132 RH |
3597 | break; |
3598 | } | |
3599 | else if ((code & 0xf0) < 0xf0) | |
3600 | switch (code & 0xfc) | |
3601 | { | |
3602 | /* mov imm32,dn -> mov imm16,dn | |
3603 | mov imm32,an -> mov imm16,an | |
3604 | mov (abs32),dn -> mov (abs16),dn | |
3605 | movbu (abs32),dn -> movbu (abs16),dn | |
3606 | movhu (abs32),dn -> movhu (abs16),dn */ | |
3607 | case 0xcc: | |
3608 | case 0xdc: | |
3609 | case 0xa4: | |
3610 | case 0xa8: | |
3611 | case 0xac: | |
3612 | /* Not safe if the high bit is on as relaxing may | |
3613 | move the value out of high mem and thus not fit | |
3614 | in a signed 16bit value. */ | |
3615 | if (code == 0xcc | |
3616 | && (value & 0x8000)) | |
3617 | continue; | |
3618 | ||
2a0fa943 AO |
3619 | /* mov imm16, an zero-extends the immediate. */ |
3620 | if (code == 0xdc | |
bfff1642 | 3621 | && (long) value < 0) |
2a0fa943 AO |
3622 | continue; |
3623 | ||
252b5132 RH |
3624 | /* Note that we've changed the relocation contents, etc. */ |
3625 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3626 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3627 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3628 | |
3629 | if ((code & 0xfc) == 0xcc) | |
3630 | code = 0x2c + (code & 0x03); | |
3631 | else if ((code & 0xfc) == 0xdc) | |
3632 | code = 0x24 + (code & 0x03); | |
3633 | else if ((code & 0xfc) == 0xa4) | |
3634 | code = 0x30 + (code & 0x03); | |
3635 | else if ((code & 0xfc) == 0xa8) | |
3636 | code = 0x34 + (code & 0x03); | |
3637 | else if ((code & 0xfc) == 0xac) | |
3638 | code = 0x38 + (code & 0x03); | |
3639 | else | |
3640 | abort (); | |
3641 | ||
3642 | /* Fix the opcode. */ | |
3643 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3644 | ||
3645 | /* Fix the relocation's type. */ | |
3646 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3647 | (ELF32_R_TYPE (irel->r_info) |
3648 | == (int) R_MN10300_GOTOFF32) | |
3649 | ? R_MN10300_GOTOFF16 | |
3650 | : (ELF32_R_TYPE (irel->r_info) | |
3651 | == (int) R_MN10300_GOT32) | |
3652 | ? R_MN10300_GOT16 | |
3653 | : (ELF32_R_TYPE (irel->r_info) | |
3654 | == (int) R_MN10300_GOTPC32) | |
3655 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3656 | R_MN10300_16); |
3657 | ||
3658 | /* The opcode got shorter too, so we have to fix the | |
3659 | addend and offset too! */ | |
3660 | irel->r_offset -= 1; | |
3661 | ||
3662 | /* Delete three bytes of data. */ | |
3663 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3664 | irel->r_offset + 1, 3)) | |
3665 | goto error_return; | |
3666 | ||
3667 | /* That will change things, so, we should relax again. | |
3668 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3669 | *again = TRUE; |
252b5132 RH |
3670 | break; |
3671 | ||
3672 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
3673 | mov (d32,sp),an -> mov (d16,sp),an |
3674 | mov (d32,sp),dn -> mov (d16,sp),dn | |
3675 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
3676 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
3677 | add imm32,dn -> add imm16,dn |
3678 | cmp imm32,dn -> cmp imm16,dn | |
3679 | add imm32,an -> add imm16,an | |
3680 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
3681 | and imm32,dn -> and imm16,dn |
3682 | or imm32,dn -> or imm16,dn | |
3683 | xor imm32,dn -> xor imm16,dn | |
3684 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
3685 | |
3686 | case 0xa0: | |
3687 | case 0xb0: | |
3688 | case 0xb1: | |
3689 | case 0xb2: | |
3690 | case 0xb3: | |
3691 | case 0xc0: | |
3692 | case 0xc8: | |
3693 | ||
3694 | case 0xd0: | |
3695 | case 0xd8: | |
3696 | case 0xe0: | |
3697 | case 0xe1: | |
3698 | case 0xe2: | |
3699 | case 0xe3: | |
2a0fa943 AO |
3700 | /* cmp imm16, an zero-extends the immediate. */ |
3701 | if (code == 0xdc | |
bfff1642 | 3702 | && (long) value < 0) |
2a0fa943 AO |
3703 | continue; |
3704 | ||
3705 | /* So do sp-based offsets. */ | |
3706 | if (code >= 0xb0 && code <= 0xb3 | |
bfff1642 | 3707 | && (long) value < 0) |
2a0fa943 AO |
3708 | continue; |
3709 | ||
252b5132 RH |
3710 | /* Note that we've changed the relocation contents, etc. */ |
3711 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3712 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3713 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3714 | |
3715 | /* Fix the opcode. */ | |
3716 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3717 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3718 | ||
3719 | /* Fix the relocation's type. */ | |
3720 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3721 | (ELF32_R_TYPE (irel->r_info) |
3722 | == (int) R_MN10300_GOTOFF32) | |
3723 | ? R_MN10300_GOTOFF16 | |
3724 | : (ELF32_R_TYPE (irel->r_info) | |
3725 | == (int) R_MN10300_GOT32) | |
3726 | ? R_MN10300_GOT16 | |
3727 | : (ELF32_R_TYPE (irel->r_info) | |
3728 | == (int) R_MN10300_GOTPC32) | |
3729 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3730 | R_MN10300_16); |
3731 | ||
3732 | /* Delete two bytes of data. */ | |
3733 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3734 | irel->r_offset + 2, 2)) | |
3735 | goto error_return; | |
3736 | ||
3737 | /* That will change things, so, we should relax again. | |
3738 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3739 | *again = TRUE; |
252b5132 RH |
3740 | break; |
3741 | } | |
3742 | else if (code == 0xfe) | |
3743 | { | |
3744 | /* add imm32,sp -> add imm16,sp */ | |
3745 | ||
3746 | /* Note that we've changed the relocation contents, etc. */ | |
3747 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3748 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3749 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3750 | |
3751 | /* Fix the opcode. */ | |
3752 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3753 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
3754 | ||
3755 | /* Fix the relocation's type. */ | |
3756 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3757 | (ELF32_R_TYPE (irel->r_info) |
3758 | == (int) R_MN10300_GOT32) | |
3759 | ? R_MN10300_GOT16 | |
3760 | : (ELF32_R_TYPE (irel->r_info) | |
3761 | == (int) R_MN10300_GOTOFF32) | |
3762 | ? R_MN10300_GOTOFF16 | |
3763 | : (ELF32_R_TYPE (irel->r_info) | |
3764 | == (int) R_MN10300_GOTPC32) | |
3765 | ? R_MN10300_GOTPC16 : | |
010ac81f | 3766 | R_MN10300_16); |
252b5132 RH |
3767 | |
3768 | /* Delete two bytes of data. */ | |
3769 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3770 | irel->r_offset + 2, 2)) | |
3771 | goto error_return; | |
3772 | ||
3773 | /* That will change things, so, we should relax again. | |
3774 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3775 | *again = TRUE; |
252b5132 RH |
3776 | break; |
3777 | } | |
3778 | } | |
3779 | } | |
3780 | } | |
3781 | ||
6cdc0ccc AM |
3782 | if (isymbuf != NULL |
3783 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3784 | { |
3785 | if (! link_info->keep_memory) | |
6cdc0ccc | 3786 | free (isymbuf); |
252b5132 RH |
3787 | else |
3788 | { | |
6cdc0ccc AM |
3789 | /* Cache the symbols for elf_link_input_bfd. */ |
3790 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3791 | } |
9ad5cbcf AM |
3792 | } |
3793 | ||
6cdc0ccc AM |
3794 | if (contents != NULL |
3795 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
3796 | { |
3797 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3798 | free (contents); |
3799 | else | |
252b5132 | 3800 | { |
6cdc0ccc AM |
3801 | /* Cache the section contents for elf_link_input_bfd. */ |
3802 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 3803 | } |
252b5132 RH |
3804 | } |
3805 | ||
6cdc0ccc AM |
3806 | if (internal_relocs != NULL |
3807 | && elf_section_data (sec)->relocs != internal_relocs) | |
3808 | free (internal_relocs); | |
3809 | ||
b34976b6 | 3810 | return TRUE; |
252b5132 RH |
3811 | |
3812 | error_return: | |
6cdc0ccc AM |
3813 | if (isymbuf != NULL |
3814 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3815 | free (isymbuf); | |
3816 | if (contents != NULL | |
3817 | && elf_section_data (section)->this_hdr.contents != contents) | |
3818 | free (contents); | |
3819 | if (internal_relocs != NULL | |
3820 | && elf_section_data (section)->relocs != internal_relocs) | |
3821 | free (internal_relocs); | |
9ad5cbcf | 3822 | |
b34976b6 | 3823 | return FALSE; |
252b5132 RH |
3824 | } |
3825 | ||
252b5132 RH |
3826 | /* This is a version of bfd_generic_get_relocated_section_contents |
3827 | which uses mn10300_elf_relocate_section. */ | |
3828 | ||
3829 | static bfd_byte * | |
603b7257 NC |
3830 | mn10300_elf_get_relocated_section_contents (bfd *output_bfd, |
3831 | struct bfd_link_info *link_info, | |
3832 | struct bfd_link_order *link_order, | |
3833 | bfd_byte *data, | |
3834 | bfd_boolean relocatable, | |
3835 | asymbol **symbols) | |
252b5132 RH |
3836 | { |
3837 | Elf_Internal_Shdr *symtab_hdr; | |
3838 | asection *input_section = link_order->u.indirect.section; | |
3839 | bfd *input_bfd = input_section->owner; | |
3840 | asection **sections = NULL; | |
3841 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 3842 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
3843 | |
3844 | /* We only need to handle the case of relaxing, or of having a | |
3845 | particular set of section contents, specially. */ | |
1049f94e | 3846 | if (relocatable |
252b5132 RH |
3847 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
3848 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3849 | link_order, data, | |
1049f94e | 3850 | relocatable, |
252b5132 RH |
3851 | symbols); |
3852 | ||
3853 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3854 | ||
3855 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
eea6121a | 3856 | (size_t) input_section->size); |
252b5132 RH |
3857 | |
3858 | if ((input_section->flags & SEC_RELOC) != 0 | |
3859 | && input_section->reloc_count > 0) | |
3860 | { | |
252b5132 | 3861 | asection **secpp; |
6cdc0ccc | 3862 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 3863 | bfd_size_type amt; |
252b5132 | 3864 | |
603b7257 NC |
3865 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, |
3866 | NULL, NULL, FALSE); | |
252b5132 RH |
3867 | if (internal_relocs == NULL) |
3868 | goto error_return; | |
3869 | ||
6cdc0ccc AM |
3870 | if (symtab_hdr->sh_info != 0) |
3871 | { | |
3872 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3873 | if (isymbuf == NULL) | |
3874 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3875 | symtab_hdr->sh_info, 0, | |
3876 | NULL, NULL, NULL); | |
3877 | if (isymbuf == NULL) | |
3878 | goto error_return; | |
3879 | } | |
252b5132 | 3880 | |
9ad5cbcf AM |
3881 | amt = symtab_hdr->sh_info; |
3882 | amt *= sizeof (asection *); | |
603b7257 | 3883 | sections = bfd_malloc (amt); |
9ad5cbcf | 3884 | if (sections == NULL && amt != 0) |
252b5132 RH |
3885 | goto error_return; |
3886 | ||
6cdc0ccc AM |
3887 | isymend = isymbuf + symtab_hdr->sh_info; |
3888 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
3889 | { |
3890 | asection *isec; | |
3891 | ||
6cdc0ccc | 3892 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3893 | isec = bfd_und_section_ptr; |
6cdc0ccc | 3894 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3895 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 3896 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
3897 | isec = bfd_com_section_ptr; |
3898 | else | |
6cdc0ccc | 3899 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
3900 | |
3901 | *secpp = isec; | |
3902 | } | |
3903 | ||
3904 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
603b7257 NC |
3905 | input_section, data, internal_relocs, |
3906 | isymbuf, sections)) | |
252b5132 RH |
3907 | goto error_return; |
3908 | ||
3909 | if (sections != NULL) | |
3910 | free (sections); | |
6cdc0ccc AM |
3911 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
3912 | free (isymbuf); | |
252b5132 RH |
3913 | if (internal_relocs != elf_section_data (input_section)->relocs) |
3914 | free (internal_relocs); | |
252b5132 RH |
3915 | } |
3916 | ||
3917 | return data; | |
3918 | ||
3919 | error_return: | |
6cdc0ccc AM |
3920 | if (sections != NULL) |
3921 | free (sections); | |
3922 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3923 | free (isymbuf); | |
252b5132 RH |
3924 | if (internal_relocs != NULL |
3925 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3926 | free (internal_relocs); | |
252b5132 RH |
3927 | return NULL; |
3928 | } | |
3929 | ||
3930 | /* Assorted hash table functions. */ | |
3931 | ||
3932 | /* Initialize an entry in the link hash table. */ | |
3933 | ||
3934 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
3935 | ||
3936 | static struct bfd_hash_entry * | |
603b7257 NC |
3937 | elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry, |
3938 | struct bfd_hash_table *table, | |
3939 | const char *string) | |
252b5132 RH |
3940 | { |
3941 | struct elf32_mn10300_link_hash_entry *ret = | |
3942 | (struct elf32_mn10300_link_hash_entry *) entry; | |
3943 | ||
3944 | /* Allocate the structure if it has not already been allocated by a | |
3945 | subclass. */ | |
603b7257 NC |
3946 | if (ret == NULL) |
3947 | ret = (struct elf32_mn10300_link_hash_entry *) | |
3948 | bfd_hash_allocate (table, sizeof (* ret)); | |
3949 | if (ret == NULL) | |
252b5132 RH |
3950 | return (struct bfd_hash_entry *) ret; |
3951 | ||
3952 | /* Call the allocation method of the superclass. */ | |
603b7257 | 3953 | ret = (struct elf32_mn10300_link_hash_entry *) |
252b5132 | 3954 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
603b7257 NC |
3955 | table, string); |
3956 | if (ret != NULL) | |
252b5132 RH |
3957 | { |
3958 | ret->direct_calls = 0; | |
3959 | ret->stack_size = 0; | |
5354b572 | 3960 | ret->movm_args = 0; |
252b5132 RH |
3961 | ret->movm_stack_size = 0; |
3962 | ret->flags = 0; | |
eb13e63f | 3963 | ret->value = 0; |
252b5132 RH |
3964 | } |
3965 | ||
3966 | return (struct bfd_hash_entry *) ret; | |
3967 | } | |
3968 | ||
3969 | /* Create an mn10300 ELF linker hash table. */ | |
3970 | ||
3971 | static struct bfd_link_hash_table * | |
603b7257 | 3972 | elf32_mn10300_link_hash_table_create (bfd *abfd) |
252b5132 RH |
3973 | { |
3974 | struct elf32_mn10300_link_hash_table *ret; | |
603b7257 | 3975 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 3976 | |
603b7257 NC |
3977 | ret = bfd_malloc (amt); |
3978 | if (ret == NULL) | |
252b5132 RH |
3979 | return NULL; |
3980 | ||
66eb6687 AM |
3981 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
3982 | elf32_mn10300_link_hash_newfunc, | |
4dfe6ac6 NC |
3983 | sizeof (struct elf32_mn10300_link_hash_entry), |
3984 | MN10300_ELF_DATA)) | |
252b5132 | 3985 | { |
e2d34d7d | 3986 | free (ret); |
252b5132 RH |
3987 | return NULL; |
3988 | } | |
3989 | ||
3990 | ret->flags = 0; | |
dc810e39 | 3991 | amt = sizeof (struct elf_link_hash_table); |
603b7257 | 3992 | ret->static_hash_table = bfd_malloc (amt); |
252b5132 RH |
3993 | if (ret->static_hash_table == NULL) |
3994 | { | |
e2d34d7d | 3995 | free (ret); |
252b5132 RH |
3996 | return NULL; |
3997 | } | |
3998 | ||
66eb6687 AM |
3999 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
4000 | elf32_mn10300_link_hash_newfunc, | |
4dfe6ac6 NC |
4001 | sizeof (struct elf32_mn10300_link_hash_entry), |
4002 | MN10300_ELF_DATA)) | |
252b5132 | 4003 | { |
e2d34d7d DJ |
4004 | free (ret->static_hash_table); |
4005 | free (ret); | |
252b5132 RH |
4006 | return NULL; |
4007 | } | |
603b7257 | 4008 | return & ret->root.root; |
252b5132 RH |
4009 | } |
4010 | ||
e2d34d7d DJ |
4011 | /* Free an mn10300 ELF linker hash table. */ |
4012 | ||
4013 | static void | |
603b7257 | 4014 | elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash) |
e2d34d7d DJ |
4015 | { |
4016 | struct elf32_mn10300_link_hash_table *ret | |
4017 | = (struct elf32_mn10300_link_hash_table *) hash; | |
4018 | ||
4019 | _bfd_generic_link_hash_table_free | |
4020 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
4021 | _bfd_generic_link_hash_table_free | |
4022 | ((struct bfd_link_hash_table *) ret); | |
4023 | } | |
4024 | ||
dc810e39 | 4025 | static unsigned long |
603b7257 | 4026 | elf_mn10300_mach (flagword flags) |
252b5132 RH |
4027 | { |
4028 | switch (flags & EF_MN10300_MACH) | |
4029 | { | |
010ac81f KH |
4030 | case E_MN10300_MACH_MN10300: |
4031 | default: | |
4032 | return bfd_mach_mn10300; | |
252b5132 | 4033 | |
010ac81f KH |
4034 | case E_MN10300_MACH_AM33: |
4035 | return bfd_mach_am33; | |
b08fa4d3 AO |
4036 | |
4037 | case E_MN10300_MACH_AM33_2: | |
4038 | return bfd_mach_am33_2; | |
252b5132 RH |
4039 | } |
4040 | } | |
4041 | ||
4042 | /* The final processing done just before writing out a MN10300 ELF object | |
4043 | file. This gets the MN10300 architecture right based on the machine | |
4044 | number. */ | |
4045 | ||
603b7257 NC |
4046 | static void |
4047 | _bfd_mn10300_elf_final_write_processing (bfd *abfd, | |
4048 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 RH |
4049 | { |
4050 | unsigned long val; | |
252b5132 RH |
4051 | |
4052 | switch (bfd_get_mach (abfd)) | |
4053 | { | |
010ac81f KH |
4054 | default: |
4055 | case bfd_mach_mn10300: | |
4056 | val = E_MN10300_MACH_MN10300; | |
4057 | break; | |
4058 | ||
4059 | case bfd_mach_am33: | |
4060 | val = E_MN10300_MACH_AM33; | |
4061 | break; | |
b08fa4d3 AO |
4062 | |
4063 | case bfd_mach_am33_2: | |
4064 | val = E_MN10300_MACH_AM33_2; | |
4065 | break; | |
252b5132 RH |
4066 | } |
4067 | ||
4068 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
4069 | elf_elfheader (abfd)->e_flags |= val; | |
4070 | } | |
4071 | ||
603b7257 NC |
4072 | static bfd_boolean |
4073 | _bfd_mn10300_elf_object_p (bfd *abfd) | |
252b5132 RH |
4074 | { |
4075 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 4076 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 4077 | return TRUE; |
252b5132 RH |
4078 | } |
4079 | ||
4080 | /* Merge backend specific data from an object file to the output | |
4081 | object file when linking. */ | |
4082 | ||
603b7257 NC |
4083 | static bfd_boolean |
4084 | _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
252b5132 RH |
4085 | { |
4086 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4087 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4088 | return TRUE; |
252b5132 RH |
4089 | |
4090 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4091 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
4092 | { | |
4093 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3b36f7e6 AM |
4094 | bfd_get_mach (ibfd))) |
4095 | return FALSE; | |
252b5132 RH |
4096 | } |
4097 | ||
b34976b6 | 4098 | return TRUE; |
252b5132 RH |
4099 | } |
4100 | ||
603b7257 NC |
4101 | #define PLT0_ENTRY_SIZE 15 |
4102 | #define PLT_ENTRY_SIZE 20 | |
4103 | #define PIC_PLT_ENTRY_SIZE 24 | |
03a12831 AO |
4104 | |
4105 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
4106 | { | |
4107 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
4108 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
4109 | 0xf0, 0xf4, /* jmp (a0) */ | |
4110 | }; | |
4111 | ||
4112 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
4113 | { | |
4114 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
4115 | 0xf0, 0xf4, /* jmp (a0) */ | |
4116 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4117 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
4118 | }; | |
4119 | ||
4120 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
4121 | { | |
4122 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
4123 | 0xf0, 0xf4, /* jmp (a0) */ | |
4124 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4125 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
4126 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
4127 | 0xf0, 0xf4, /* jmp (a0) */ | |
4128 | }; | |
4129 | ||
4130 | /* Return size of the first PLT entry. */ | |
4131 | #define elf_mn10300_sizeof_plt0(info) \ | |
4132 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
4133 | ||
4134 | /* Return size of a PLT entry. */ | |
4135 | #define elf_mn10300_sizeof_plt(info) \ | |
4136 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
4137 | ||
4138 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
4139 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
4140 | ||
4141 | /* Return offset of the linker in PLT0 entry. */ | |
4142 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
4143 | ||
4144 | /* Return offset of the GOT id in PLT0 entry. */ | |
4145 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
4146 | ||
603b7257 | 4147 | /* Return offset of the temporary in PLT entry. */ |
03a12831 AO |
4148 | #define elf_mn10300_plt_temp_offset(info) 8 |
4149 | ||
4150 | /* Return offset of the symbol in PLT entry. */ | |
4151 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
4152 | ||
4153 | /* Return offset of the relocation in PLT entry. */ | |
4154 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
4155 | ||
4156 | /* The name of the dynamic interpreter. This is put in the .interp | |
4157 | section. */ | |
4158 | ||
4159 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
4160 | ||
4161 | /* Create dynamic sections when linking against a dynamic object. */ | |
4162 | ||
4163 | static bfd_boolean | |
603b7257 | 4164 | _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
03a12831 AO |
4165 | { |
4166 | flagword flags; | |
4167 | asection * s; | |
9c5bfbb7 | 4168 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
4169 | int ptralign = 0; |
4170 | ||
4171 | switch (bed->s->arch_size) | |
4172 | { | |
4173 | case 32: | |
4174 | ptralign = 2; | |
4175 | break; | |
4176 | ||
4177 | case 64: | |
4178 | ptralign = 3; | |
4179 | break; | |
4180 | ||
4181 | default: | |
4182 | bfd_set_error (bfd_error_bad_value); | |
4183 | return FALSE; | |
4184 | } | |
4185 | ||
4186 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
4187 | .rel[a].bss sections. */ | |
03a12831 AO |
4188 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4189 | | SEC_LINKER_CREATED); | |
4190 | ||
3496cb2a L |
4191 | s = bfd_make_section_with_flags (abfd, |
4192 | (bed->default_use_rela_p | |
4193 | ? ".rela.plt" : ".rel.plt"), | |
4194 | flags | SEC_READONLY); | |
03a12831 | 4195 | if (s == NULL |
03a12831 AO |
4196 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4197 | return FALSE; | |
4198 | ||
4199 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
4200 | return FALSE; | |
4201 | ||
4202 | { | |
4203 | const char * secname; | |
4204 | char * relname; | |
4205 | flagword secflags; | |
4206 | asection * sec; | |
4207 | ||
4208 | for (sec = abfd->sections; sec; sec = sec->next) | |
4209 | { | |
4210 | secflags = bfd_get_section_flags (abfd, sec); | |
4211 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
4212 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
4213 | continue; | |
4214 | ||
4215 | secname = bfd_get_section_name (abfd, sec); | |
603b7257 | 4216 | relname = bfd_malloc (strlen (secname) + 6); |
03a12831 AO |
4217 | strcpy (relname, ".rela"); |
4218 | strcat (relname, secname); | |
4219 | ||
3496cb2a L |
4220 | s = bfd_make_section_with_flags (abfd, relname, |
4221 | flags | SEC_READONLY); | |
03a12831 | 4222 | if (s == NULL |
03a12831 AO |
4223 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4224 | return FALSE; | |
4225 | } | |
4226 | } | |
4227 | ||
4228 | if (bed->want_dynbss) | |
4229 | { | |
4230 | /* The .dynbss section is a place to put symbols which are defined | |
4231 | by dynamic objects, are referenced by regular objects, and are | |
4232 | not functions. We must allocate space for them in the process | |
4233 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
4234 | initialize them at run time. The linker script puts the .dynbss | |
4235 | section into the .bss section of the final image. */ | |
3496cb2a L |
4236 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
4237 | SEC_ALLOC | SEC_LINKER_CREATED); | |
4238 | if (s == NULL) | |
03a12831 AO |
4239 | return FALSE; |
4240 | ||
4241 | /* The .rel[a].bss section holds copy relocs. This section is not | |
4242 | normally needed. We need to create it here, though, so that the | |
4243 | linker will map it to an output section. We can't just create it | |
4244 | only if we need it, because we will not know whether we need it | |
4245 | until we have seen all the input files, and the first time the | |
4246 | main linker code calls BFD after examining all the input files | |
4247 | (size_dynamic_sections) the input sections have already been | |
4248 | mapped to the output sections. If the section turns out not to | |
4249 | be needed, we can discard it later. We will never need this | |
4250 | section when generating a shared object, since they do not use | |
4251 | copy relocs. */ | |
4252 | if (! info->shared) | |
4253 | { | |
3496cb2a L |
4254 | s = bfd_make_section_with_flags (abfd, |
4255 | (bed->default_use_rela_p | |
4256 | ? ".rela.bss" : ".rel.bss"), | |
4257 | flags | SEC_READONLY); | |
03a12831 | 4258 | if (s == NULL |
03a12831 AO |
4259 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4260 | return FALSE; | |
4261 | } | |
4262 | } | |
4263 | ||
4264 | return TRUE; | |
4265 | } | |
4266 | \f | |
4267 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4268 | regular object. The current definition is in some section of the | |
4269 | dynamic object, but we're not including those sections. We have to | |
4270 | change the definition to something the rest of the link can | |
4271 | understand. */ | |
4272 | ||
4273 | static bfd_boolean | |
603b7257 NC |
4274 | _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info, |
4275 | struct elf_link_hash_entry * h) | |
03a12831 AO |
4276 | { |
4277 | bfd * dynobj; | |
4278 | asection * s; | |
03a12831 AO |
4279 | |
4280 | dynobj = elf_hash_table (info)->dynobj; | |
4281 | ||
4282 | /* Make sure we know what is going on here. */ | |
4283 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4284 | && (h->needs_plt |
f6e332e6 | 4285 | || h->u.weakdef != NULL |
f5385ebf AM |
4286 | || (h->def_dynamic |
4287 | && h->ref_regular | |
4288 | && !h->def_regular))); | |
03a12831 AO |
4289 | |
4290 | /* If this is a function, put it in the procedure linkage table. We | |
4291 | will fill in the contents of the procedure linkage table later, | |
4292 | when we know the address of the .got section. */ | |
4293 | if (h->type == STT_FUNC | |
f5385ebf | 4294 | || h->needs_plt) |
03a12831 AO |
4295 | { |
4296 | if (! info->shared | |
f5385ebf AM |
4297 | && !h->def_dynamic |
4298 | && !h->ref_dynamic) | |
03a12831 AO |
4299 | { |
4300 | /* This case can occur if we saw a PLT reloc in an input | |
4301 | file, but the symbol was never referred to by a dynamic | |
4302 | object. In such a case, we don't actually need to build | |
4303 | a procedure linkage table, and we can just do a REL32 | |
4304 | reloc instead. */ | |
f5385ebf | 4305 | BFD_ASSERT (h->needs_plt); |
03a12831 AO |
4306 | return TRUE; |
4307 | } | |
4308 | ||
4309 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4310 | if (h->dynindx == -1) | |
4311 | { | |
c152c796 | 4312 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
4313 | return FALSE; |
4314 | } | |
4315 | ||
4316 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
4317 | BFD_ASSERT (s != NULL); | |
4318 | ||
4319 | /* If this is the first .plt entry, make room for the special | |
4320 | first entry. */ | |
eea6121a AM |
4321 | if (s->size == 0) |
4322 | s->size += elf_mn10300_sizeof_plt0 (info); | |
03a12831 AO |
4323 | |
4324 | /* If this symbol is not defined in a regular file, and we are | |
4325 | not generating a shared library, then set the symbol to this | |
4326 | location in the .plt. This is required to make function | |
4327 | pointers compare as equal between the normal executable and | |
4328 | the shared library. */ | |
4329 | if (! info->shared | |
f5385ebf | 4330 | && !h->def_regular) |
03a12831 AO |
4331 | { |
4332 | h->root.u.def.section = s; | |
eea6121a | 4333 | h->root.u.def.value = s->size; |
03a12831 AO |
4334 | } |
4335 | ||
eea6121a | 4336 | h->plt.offset = s->size; |
03a12831 AO |
4337 | |
4338 | /* Make room for this entry. */ | |
eea6121a | 4339 | s->size += elf_mn10300_sizeof_plt (info); |
03a12831 AO |
4340 | |
4341 | /* We also need to make an entry in the .got.plt section, which | |
4342 | will be placed in the .got section by the linker script. */ | |
03a12831 AO |
4343 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
4344 | BFD_ASSERT (s != NULL); | |
eea6121a | 4345 | s->size += 4; |
03a12831 AO |
4346 | |
4347 | /* We also need to make an entry in the .rela.plt section. */ | |
03a12831 AO |
4348 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
4349 | BFD_ASSERT (s != NULL); | |
eea6121a | 4350 | s->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
4351 | |
4352 | return TRUE; | |
4353 | } | |
4354 | ||
4355 | /* If this is a weak symbol, and there is a real definition, the | |
4356 | processor independent code will have arranged for us to see the | |
4357 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4358 | if (h->u.weakdef != NULL) |
03a12831 | 4359 | { |
f6e332e6 AM |
4360 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4361 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4362 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4363 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
03a12831 AO |
4364 | return TRUE; |
4365 | } | |
4366 | ||
4367 | /* This is a reference to a symbol defined by a dynamic object which | |
4368 | is not a function. */ | |
4369 | ||
4370 | /* If we are creating a shared library, we must presume that the | |
4371 | only references to the symbol are via the global offset table. | |
4372 | For such cases we need not do anything here; the relocations will | |
4373 | be handled correctly by relocate_section. */ | |
4374 | if (info->shared) | |
4375 | return TRUE; | |
4376 | ||
4377 | /* If there are no references to this symbol that do not use the | |
4378 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 4379 | if (!h->non_got_ref) |
03a12831 AO |
4380 | return TRUE; |
4381 | ||
909272ee AM |
4382 | if (h->size == 0) |
4383 | { | |
4384 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4385 | h->root.root.string); | |
4386 | return TRUE; | |
4387 | } | |
4388 | ||
03a12831 AO |
4389 | /* We must allocate the symbol in our .dynbss section, which will |
4390 | become part of the .bss section of the executable. There will be | |
4391 | an entry for this symbol in the .dynsym section. The dynamic | |
4392 | object will contain position independent code, so all references | |
4393 | from the dynamic object to this symbol will go through the global | |
4394 | offset table. The dynamic linker will use the .dynsym entry to | |
4395 | determine the address it must put in the global offset table, so | |
4396 | both the dynamic object and the regular object will refer to the | |
4397 | same memory location for the variable. */ | |
4398 | ||
4399 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
4400 | BFD_ASSERT (s != NULL); | |
4401 | ||
4402 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
4403 | copy the initial value out of the dynamic object and into the | |
4404 | runtime process image. We need to remember the offset into the | |
4405 | .rela.bss section we are going to use. */ | |
4406 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4407 | { | |
4408 | asection * srel; | |
4409 | ||
4410 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
4411 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4412 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 4413 | h->needs_copy = 1; |
03a12831 AO |
4414 | } |
4415 | ||
027297b7 | 4416 | return _bfd_elf_adjust_dynamic_copy (h, s); |
03a12831 AO |
4417 | } |
4418 | ||
03a12831 AO |
4419 | /* Set the sizes of the dynamic sections. */ |
4420 | ||
4421 | static bfd_boolean | |
603b7257 NC |
4422 | _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd, |
4423 | struct bfd_link_info * info) | |
03a12831 AO |
4424 | { |
4425 | bfd * dynobj; | |
4426 | asection * s; | |
4427 | bfd_boolean plt; | |
4428 | bfd_boolean relocs; | |
4429 | bfd_boolean reltext; | |
4430 | ||
4431 | dynobj = elf_hash_table (info)->dynobj; | |
4432 | BFD_ASSERT (dynobj != NULL); | |
4433 | ||
4434 | if (elf_hash_table (info)->dynamic_sections_created) | |
4435 | { | |
4436 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 4437 | if (info->executable) |
03a12831 AO |
4438 | { |
4439 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4440 | BFD_ASSERT (s != NULL); | |
eea6121a | 4441 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
03a12831 AO |
4442 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4443 | } | |
4444 | } | |
4445 | else | |
4446 | { | |
4447 | /* We may have created entries in the .rela.got section. | |
4448 | However, if we are not creating the dynamic sections, we will | |
4449 | not actually use these entries. Reset the size of .rela.got, | |
4450 | which will cause it to get stripped from the output file | |
4451 | below. */ | |
4452 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4453 | if (s != NULL) | |
eea6121a | 4454 | s->size = 0; |
03a12831 AO |
4455 | } |
4456 | ||
03a12831 AO |
4457 | /* The check_relocs and adjust_dynamic_symbol entry points have |
4458 | determined the sizes of the various dynamic sections. Allocate | |
4459 | memory for them. */ | |
4460 | plt = FALSE; | |
4461 | relocs = FALSE; | |
4462 | reltext = FALSE; | |
4463 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4464 | { | |
4465 | const char * name; | |
03a12831 AO |
4466 | |
4467 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4468 | continue; | |
4469 | ||
4470 | /* It's OK to base decisions on the section name, because none | |
4471 | of the dynobj section names depend upon the input files. */ | |
4472 | name = bfd_get_section_name (dynobj, s); | |
4473 | ||
603b7257 | 4474 | if (streq (name, ".plt")) |
03a12831 | 4475 | { |
c456f082 AM |
4476 | /* Remember whether there is a PLT. */ |
4477 | plt = s->size != 0; | |
03a12831 | 4478 | } |
0112cd26 | 4479 | else if (CONST_STRNEQ (name, ".rela")) |
03a12831 | 4480 | { |
c456f082 | 4481 | if (s->size != 0) |
03a12831 AO |
4482 | { |
4483 | asection * target; | |
4484 | ||
4485 | /* Remember whether there are any reloc sections other | |
4486 | than .rela.plt. */ | |
603b7257 | 4487 | if (! streq (name, ".rela.plt")) |
03a12831 AO |
4488 | { |
4489 | const char * outname; | |
4490 | ||
4491 | relocs = TRUE; | |
4492 | ||
4493 | /* If this relocation section applies to a read only | |
4494 | section, then we probably need a DT_TEXTREL | |
4495 | entry. The entries in the .rela.plt section | |
4496 | really apply to the .got section, which we | |
4497 | created ourselves and so know is not readonly. */ | |
4498 | outname = bfd_get_section_name (output_bfd, | |
4499 | s->output_section); | |
4500 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
4501 | if (target != NULL | |
4502 | && (target->flags & SEC_READONLY) != 0 | |
4503 | && (target->flags & SEC_ALLOC) != 0) | |
4504 | reltext = TRUE; | |
4505 | } | |
4506 | ||
4507 | /* We use the reloc_count field as a counter if we need | |
4508 | to copy relocs into the output file. */ | |
4509 | s->reloc_count = 0; | |
4510 | } | |
4511 | } | |
0112cd26 | 4512 | else if (! CONST_STRNEQ (name, ".got") |
603b7257 | 4513 | && ! streq (name, ".dynbss")) |
03a12831 AO |
4514 | /* It's not one of our sections, so don't allocate space. */ |
4515 | continue; | |
4516 | ||
c456f082 | 4517 | if (s->size == 0) |
03a12831 | 4518 | { |
c456f082 AM |
4519 | /* If we don't need this section, strip it from the |
4520 | output file. This is mostly to handle .rela.bss and | |
4521 | .rela.plt. We must create both sections in | |
4522 | create_dynamic_sections, because they must be created | |
4523 | before the linker maps input sections to output | |
4524 | sections. The linker does that before | |
4525 | adjust_dynamic_symbol is called, and it is that | |
4526 | function which decides whether anything needs to go | |
4527 | into these sections. */ | |
8423293d | 4528 | s->flags |= SEC_EXCLUDE; |
03a12831 AO |
4529 | continue; |
4530 | } | |
4531 | ||
c456f082 AM |
4532 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
4533 | continue; | |
4534 | ||
03a12831 AO |
4535 | /* Allocate memory for the section contents. We use bfd_zalloc |
4536 | here in case unused entries are not reclaimed before the | |
4537 | section's contents are written out. This should not happen, | |
4538 | but this way if it does, we get a R_MN10300_NONE reloc | |
4539 | instead of garbage. */ | |
603b7257 | 4540 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 4541 | if (s->contents == NULL) |
03a12831 AO |
4542 | return FALSE; |
4543 | } | |
4544 | ||
4545 | if (elf_hash_table (info)->dynamic_sections_created) | |
4546 | { | |
4547 | /* Add some entries to the .dynamic section. We fill in the | |
4548 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
4549 | but we must add the entries now so that we get the correct | |
4550 | size for the .dynamic section. The DT_DEBUG entry is filled | |
4551 | in by the dynamic linker and used by the debugger. */ | |
4552 | if (! info->shared) | |
4553 | { | |
5a580b3a | 4554 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) |
03a12831 AO |
4555 | return FALSE; |
4556 | } | |
4557 | ||
4558 | if (plt) | |
4559 | { | |
5a580b3a AM |
4560 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
4561 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4562 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
4563 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
03a12831 AO |
4564 | return FALSE; |
4565 | } | |
4566 | ||
4567 | if (relocs) | |
4568 | { | |
5a580b3a AM |
4569 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
4570 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
4571 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
4572 | sizeof (Elf32_External_Rela))) | |
03a12831 AO |
4573 | return FALSE; |
4574 | } | |
4575 | ||
4576 | if (reltext) | |
4577 | { | |
5a580b3a | 4578 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
03a12831 AO |
4579 | return FALSE; |
4580 | } | |
4581 | } | |
4582 | ||
4583 | return TRUE; | |
4584 | } | |
4585 | ||
4586 | /* Finish up dynamic symbol handling. We set the contents of various | |
4587 | dynamic sections here. */ | |
4588 | ||
4589 | static bfd_boolean | |
603b7257 NC |
4590 | _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd, |
4591 | struct bfd_link_info * info, | |
4592 | struct elf_link_hash_entry * h, | |
4593 | Elf_Internal_Sym * sym) | |
03a12831 AO |
4594 | { |
4595 | bfd * dynobj; | |
4596 | ||
4597 | dynobj = elf_hash_table (info)->dynobj; | |
4598 | ||
4599 | if (h->plt.offset != (bfd_vma) -1) | |
4600 | { | |
4601 | asection * splt; | |
4602 | asection * sgot; | |
4603 | asection * srel; | |
4604 | bfd_vma plt_index; | |
4605 | bfd_vma got_offset; | |
4606 | Elf_Internal_Rela rel; | |
4607 | ||
4608 | /* This symbol has an entry in the procedure linkage table. Set | |
4609 | it up. */ | |
4610 | ||
4611 | BFD_ASSERT (h->dynindx != -1); | |
4612 | ||
4613 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4614 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4615 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4616 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4617 | ||
4618 | /* Get the index in the procedure linkage table which | |
4619 | corresponds to this symbol. This is the index of this symbol | |
4620 | in all the symbols for which we are making plt entries. The | |
4621 | first entry in the procedure linkage table is reserved. */ | |
4622 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
4623 | / elf_mn10300_sizeof_plt (info)); | |
4624 | ||
4625 | /* Get the offset into the .got table of the entry that | |
4626 | corresponds to this function. Each .got entry is 4 bytes. | |
4627 | The first three are reserved. */ | |
4628 | got_offset = (plt_index + 3) * 4; | |
4629 | ||
4630 | /* Fill in the entry in the procedure linkage table. */ | |
4631 | if (! info->shared) | |
4632 | { | |
4633 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
4634 | elf_mn10300_sizeof_plt (info)); | |
4635 | bfd_put_32 (output_bfd, | |
4636 | (sgot->output_section->vma | |
4637 | + sgot->output_offset | |
4638 | + got_offset), | |
4639 | (splt->contents + h->plt.offset | |
4640 | + elf_mn10300_plt_symbol_offset (info))); | |
4641 | ||
4642 | bfd_put_32 (output_bfd, | |
4643 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
4644 | (splt->contents + h->plt.offset | |
4645 | + elf_mn10300_plt_plt0_offset (info))); | |
4646 | } | |
4647 | else | |
4648 | { | |
4649 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
4650 | elf_mn10300_sizeof_plt (info)); | |
4651 | ||
4652 | bfd_put_32 (output_bfd, got_offset, | |
4653 | (splt->contents + h->plt.offset | |
4654 | + elf_mn10300_plt_symbol_offset (info))); | |
4655 | } | |
4656 | ||
4657 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4658 | (splt->contents + h->plt.offset | |
4659 | + elf_mn10300_plt_reloc_offset (info))); | |
4660 | ||
4661 | /* Fill in the entry in the global offset table. */ | |
4662 | bfd_put_32 (output_bfd, | |
4663 | (splt->output_section->vma | |
4664 | + splt->output_offset | |
4665 | + h->plt.offset | |
4666 | + elf_mn10300_plt_temp_offset (info)), | |
4667 | sgot->contents + got_offset); | |
4668 | ||
4669 | /* Fill in the entry in the .rela.plt section. */ | |
4670 | rel.r_offset = (sgot->output_section->vma | |
4671 | + sgot->output_offset | |
4672 | + got_offset); | |
4673 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
4674 | rel.r_addend = 0; | |
4675 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4676 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4677 | + plt_index)); | |
03a12831 | 4678 | |
f5385ebf | 4679 | if (!h->def_regular) |
03a12831 AO |
4680 | /* Mark the symbol as undefined, rather than as defined in |
4681 | the .plt section. Leave the value alone. */ | |
4682 | sym->st_shndx = SHN_UNDEF; | |
4683 | } | |
4684 | ||
4685 | if (h->got.offset != (bfd_vma) -1) | |
4686 | { | |
4687 | asection * sgot; | |
4688 | asection * srel; | |
4689 | Elf_Internal_Rela rel; | |
4690 | ||
4691 | /* This symbol has an entry in the global offset table. Set it up. */ | |
03a12831 AO |
4692 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
4693 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4694 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4695 | ||
4696 | rel.r_offset = (sgot->output_section->vma | |
4697 | + sgot->output_offset | |
603b7257 | 4698 | + (h->got.offset & ~1)); |
03a12831 AO |
4699 | |
4700 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4701 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4702 | the symbol was forced to be local because of a version file. | |
4703 | The entry in the global offset table will already have been | |
4704 | initialized in the relocate_section function. */ | |
4705 | if (info->shared | |
4706 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 4707 | && h->def_regular) |
03a12831 AO |
4708 | { |
4709 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
4710 | rel.r_addend = (h->root.u.def.value | |
4711 | + h->root.u.def.section->output_section->vma | |
4712 | + h->root.u.def.section->output_offset); | |
4713 | } | |
4714 | else | |
4715 | { | |
4716 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4717 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
4718 | rel.r_addend = 0; | |
4719 | } | |
4720 | ||
4721 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4722 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4723 | + srel->reloc_count)); | |
03a12831 AO |
4724 | ++ srel->reloc_count; |
4725 | } | |
4726 | ||
f5385ebf | 4727 | if (h->needs_copy) |
03a12831 AO |
4728 | { |
4729 | asection * s; | |
4730 | Elf_Internal_Rela rel; | |
4731 | ||
4732 | /* This symbol needs a copy reloc. Set it up. */ | |
4733 | BFD_ASSERT (h->dynindx != -1 | |
4734 | && (h->root.type == bfd_link_hash_defined | |
4735 | || h->root.type == bfd_link_hash_defweak)); | |
4736 | ||
4737 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4738 | ".rela.bss"); | |
4739 | BFD_ASSERT (s != NULL); | |
4740 | ||
4741 | rel.r_offset = (h->root.u.def.value | |
4742 | + h->root.u.def.section->output_section->vma | |
4743 | + h->root.u.def.section->output_offset); | |
4744 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
4745 | rel.r_addend = 0; | |
603b7257 | 4746 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
560e09e9 NC |
4747 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
4748 | + s->reloc_count)); | |
03a12831 AO |
4749 | ++ s->reloc_count; |
4750 | } | |
4751 | ||
4752 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
603b7257 | 4753 | if (streq (h->root.root.string, "_DYNAMIC") |
22edb2f1 | 4754 | || h == elf_hash_table (info)->hgot) |
03a12831 AO |
4755 | sym->st_shndx = SHN_ABS; |
4756 | ||
4757 | return TRUE; | |
4758 | } | |
4759 | ||
4760 | /* Finish up the dynamic sections. */ | |
4761 | ||
4762 | static bfd_boolean | |
603b7257 NC |
4763 | _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd, |
4764 | struct bfd_link_info * info) | |
03a12831 AO |
4765 | { |
4766 | bfd * dynobj; | |
4767 | asection * sgot; | |
4768 | asection * sdyn; | |
4769 | ||
4770 | dynobj = elf_hash_table (info)->dynobj; | |
4771 | ||
4772 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4773 | BFD_ASSERT (sgot != NULL); | |
4774 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4775 | ||
4776 | if (elf_hash_table (info)->dynamic_sections_created) | |
4777 | { | |
4778 | asection * splt; | |
4779 | Elf32_External_Dyn * dyncon; | |
4780 | Elf32_External_Dyn * dynconend; | |
4781 | ||
4782 | BFD_ASSERT (sdyn != NULL); | |
4783 | ||
4784 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4785 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
03a12831 AO |
4786 | |
4787 | for (; dyncon < dynconend; dyncon++) | |
4788 | { | |
4789 | Elf_Internal_Dyn dyn; | |
4790 | const char * name; | |
4791 | asection * s; | |
4792 | ||
4793 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4794 | ||
4795 | switch (dyn.d_tag) | |
4796 | { | |
4797 | default: | |
4798 | break; | |
4799 | ||
4800 | case DT_PLTGOT: | |
4801 | name = ".got"; | |
4802 | goto get_vma; | |
4803 | ||
4804 | case DT_JMPREL: | |
4805 | name = ".rela.plt"; | |
4806 | get_vma: | |
4807 | s = bfd_get_section_by_name (output_bfd, name); | |
4808 | BFD_ASSERT (s != NULL); | |
4809 | dyn.d_un.d_ptr = s->vma; | |
4810 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4811 | break; | |
4812 | ||
4813 | case DT_PLTRELSZ: | |
4814 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4815 | BFD_ASSERT (s != NULL); | |
eea6121a | 4816 | dyn.d_un.d_val = s->size; |
03a12831 AO |
4817 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4818 | break; | |
4819 | ||
4820 | case DT_RELASZ: | |
4821 | /* My reading of the SVR4 ABI indicates that the | |
4822 | procedure linkage table relocs (DT_JMPREL) should be | |
4823 | included in the overall relocs (DT_RELA). This is | |
4824 | what Solaris does. However, UnixWare can not handle | |
4825 | that case. Therefore, we override the DT_RELASZ entry | |
4826 | here to make it not include the JMPREL relocs. Since | |
4827 | the linker script arranges for .rela.plt to follow all | |
4828 | other relocation sections, we don't have to worry | |
4829 | about changing the DT_RELA entry. */ | |
4830 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4831 | if (s != NULL) | |
eea6121a | 4832 | dyn.d_un.d_val -= s->size; |
03a12831 AO |
4833 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4834 | break; | |
4835 | } | |
4836 | } | |
4837 | ||
4838 | /* Fill in the first entry in the procedure linkage table. */ | |
4839 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
eea6121a | 4840 | if (splt && splt->size > 0) |
03a12831 AO |
4841 | { |
4842 | if (info->shared) | |
4843 | { | |
4844 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
4845 | elf_mn10300_sizeof_plt (info)); | |
4846 | } | |
4847 | else | |
4848 | { | |
4849 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
4850 | bfd_put_32 (output_bfd, | |
4851 | sgot->output_section->vma + sgot->output_offset + 4, | |
4852 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
4853 | bfd_put_32 (output_bfd, | |
4854 | sgot->output_section->vma + sgot->output_offset + 8, | |
4855 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
4856 | } | |
4857 | ||
4858 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4859 | really seem like the right value. */ | |
4860 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4861 | } | |
4862 | } | |
4863 | ||
4864 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4865 | if (sgot->size > 0) |
03a12831 AO |
4866 | { |
4867 | if (sdyn == NULL) | |
4868 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4869 | else | |
4870 | bfd_put_32 (output_bfd, | |
4871 | sdyn->output_section->vma + sdyn->output_offset, | |
4872 | sgot->contents); | |
4873 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4874 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4875 | } | |
4876 | ||
4877 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4878 | ||
4879 | return TRUE; | |
4880 | } | |
4881 | ||
a873f25a AO |
4882 | /* Classify relocation types, such that combreloc can sort them |
4883 | properly. */ | |
4884 | ||
4885 | static enum elf_reloc_type_class | |
4886 | _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
4887 | { | |
4888 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
4889 | { | |
603b7257 NC |
4890 | case R_MN10300_RELATIVE: return reloc_class_relative; |
4891 | case R_MN10300_JMP_SLOT: return reloc_class_plt; | |
4892 | case R_MN10300_COPY: return reloc_class_copy; | |
4893 | default: return reloc_class_normal; | |
a873f25a AO |
4894 | } |
4895 | } | |
4896 | ||
73c3cd1c | 4897 | #ifndef ELF_ARCH |
252b5132 RH |
4898 | #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
4899 | #define TARGET_LITTLE_NAME "elf32-mn10300" | |
4900 | #define ELF_ARCH bfd_arch_mn10300 | |
6f4514dc AO |
4901 | #define ELF_MACHINE_CODE EM_MN10300 |
4902 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 4903 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 4904 | #endif |
252b5132 RH |
4905 | |
4906 | #define elf_info_to_howto mn10300_info_to_howto | |
4907 | #define elf_info_to_howto_rel 0 | |
4908 | #define elf_backend_can_gc_sections 1 | |
b491616a | 4909 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4910 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
4911 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
4912 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
4913 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
4914 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4915 | mn10300_elf_get_relocated_section_contents | |
4916 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4917 | elf32_mn10300_link_hash_table_create | |
e2d34d7d DJ |
4918 | #define bfd_elf32_bfd_link_hash_table_free \ |
4919 | elf32_mn10300_link_hash_table_free | |
252b5132 | 4920 | |
73c3cd1c | 4921 | #ifndef elf_symbol_leading_char |
252b5132 | 4922 | #define elf_symbol_leading_char '_' |
73c3cd1c | 4923 | #endif |
252b5132 RH |
4924 | |
4925 | /* So we can set bits in e_flags. */ | |
4926 | #define elf_backend_final_write_processing \ | |
3b36f7e6 AM |
4927 | _bfd_mn10300_elf_final_write_processing |
4928 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
252b5132 RH |
4929 | |
4930 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3b36f7e6 | 4931 | _bfd_mn10300_elf_merge_private_bfd_data |
252b5132 | 4932 | |
03a12831 AO |
4933 | #define elf_backend_can_gc_sections 1 |
4934 | #define elf_backend_create_dynamic_sections \ | |
4935 | _bfd_mn10300_elf_create_dynamic_sections | |
4936 | #define elf_backend_adjust_dynamic_symbol \ | |
4937 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
4938 | #define elf_backend_size_dynamic_sections \ | |
4939 | _bfd_mn10300_elf_size_dynamic_sections | |
74541ad4 AM |
4940 | #define elf_backend_omit_section_dynsym \ |
4941 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
03a12831 AO |
4942 | #define elf_backend_finish_dynamic_symbol \ |
4943 | _bfd_mn10300_elf_finish_dynamic_symbol | |
4944 | #define elf_backend_finish_dynamic_sections \ | |
4945 | _bfd_mn10300_elf_finish_dynamic_sections | |
4946 | ||
a873f25a AO |
4947 | #define elf_backend_reloc_type_class \ |
4948 | _bfd_mn10300_elf_reloc_type_class | |
4949 | ||
03a12831 AO |
4950 | #define elf_backend_want_got_plt 1 |
4951 | #define elf_backend_plt_readonly 1 | |
4952 | #define elf_backend_want_plt_sym 0 | |
4953 | #define elf_backend_got_header_size 12 | |
03a12831 | 4954 | |
252b5132 | 4955 | #include "elf32-target.h" |