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, |
7686d77d | 3 | 2006, 2007, 2008, 2009, 2010, 2011 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 | 989 | bfd * dynobj; |
03a12831 AO |
990 | asection * sgot; |
991 | asection * splt; | |
992 | asection * sreloc; | |
993 | ||
994 | dynobj = elf_hash_table (info)->dynobj; | |
03a12831 AO |
995 | sgot = NULL; |
996 | splt = NULL; | |
997 | sreloc = NULL; | |
252b5132 | 998 | |
146ccdbb AO |
999 | switch (r_type) |
1000 | { | |
1001 | case R_MN10300_24: | |
1002 | case R_MN10300_16: | |
1003 | case R_MN10300_8: | |
1004 | case R_MN10300_PCREL8: | |
1005 | case R_MN10300_PCREL16: | |
1006 | case R_MN10300_PCREL32: | |
1007 | case R_MN10300_GOTOFF32: | |
1008 | case R_MN10300_GOTOFF24: | |
1009 | case R_MN10300_GOTOFF16: | |
1010 | if (info->shared | |
1011 | && (input_section->flags & SEC_ALLOC) != 0 | |
1012 | && h != NULL | |
7e2294f9 | 1013 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
146ccdbb AO |
1014 | return bfd_reloc_dangerous; |
1015 | } | |
1016 | ||
bfff1642 NC |
1017 | is_sym_diff_reloc = FALSE; |
1018 | if (sym_diff_section != NULL) | |
1019 | { | |
1020 | BFD_ASSERT (sym_diff_section == input_section); | |
1021 | ||
1022 | switch (r_type) | |
1023 | { | |
1024 | case R_MN10300_32: | |
1025 | case R_MN10300_24: | |
1026 | case R_MN10300_16: | |
1027 | case R_MN10300_8: | |
1028 | value -= sym_diff_value; | |
b5f5fd96 NC |
1029 | /* If we are computing a 32-bit value for the location lists |
1030 | and the result is 0 then we add one to the value. A zero | |
1031 | value can result because of linker relaxation deleteing | |
1032 | prologue instructions and using a value of 1 (for the begin | |
1033 | and end offsets in the location list entry) results in a | |
1034 | nul entry which does not prevent the following entries from | |
1035 | being parsed. */ | |
1036 | if (r_type == R_MN10300_32 | |
1037 | && value == 0 | |
1038 | && strcmp (input_section->name, ".debug_loc") == 0) | |
1039 | value = 1; | |
bfff1642 NC |
1040 | sym_diff_section = NULL; |
1041 | is_sym_diff_reloc = TRUE; | |
1042 | break; | |
1043 | ||
1044 | default: | |
1045 | sym_diff_section = NULL; | |
1046 | break; | |
1047 | } | |
1048 | } | |
1049 | ||
252b5132 RH |
1050 | switch (r_type) |
1051 | { | |
bfff1642 NC |
1052 | case R_MN10300_SYM_DIFF: |
1053 | BFD_ASSERT (addend == 0); | |
1054 | /* Cache the input section and value. | |
1055 | The offset is unreliable, since relaxation may | |
1056 | have reduced the following reloc's offset. */ | |
1057 | sym_diff_section = input_section; | |
1058 | sym_diff_value = value; | |
1059 | return bfd_reloc_ok; | |
1060 | ||
569006e5 | 1061 | case R_MN10300_ALIGN: |
252b5132 RH |
1062 | case R_MN10300_NONE: |
1063 | return bfd_reloc_ok; | |
1064 | ||
1065 | case R_MN10300_32: | |
03a12831 | 1066 | if (info->shared |
bfff1642 NC |
1067 | /* Do not generate relocs when an R_MN10300_32 has been used |
1068 | with an R_MN10300_SYM_DIFF to compute a difference of two | |
1069 | symbols. */ | |
1070 | && is_sym_diff_reloc == FALSE | |
1071 | /* Also, do not generate a reloc when the symbol associated | |
1072 | with the R_MN10300_32 reloc is absolute - there is no | |
1073 | need for a run time computation in this case. */ | |
1074 | && sym_sec != bfd_abs_section_ptr | |
1075 | /* If the section is not going to be allocated at load time | |
1076 | then there is no need to generate relocs for it. */ | |
03a12831 AO |
1077 | && (input_section->flags & SEC_ALLOC) != 0) |
1078 | { | |
1079 | Elf_Internal_Rela outrel; | |
1080 | bfd_boolean skip, relocate; | |
1081 | ||
1082 | /* When generating a shared object, these relocations are | |
1083 | copied into the output file to be resolved at run | |
1084 | time. */ | |
1085 | if (sreloc == NULL) | |
1086 | { | |
83bac4b0 NC |
1087 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1088 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1089 | if (sreloc == NULL) | |
03a12831 | 1090 | return FALSE; |
03a12831 AO |
1091 | } |
1092 | ||
1093 | skip = FALSE; | |
1094 | ||
eea6121a AM |
1095 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1096 | input_section, offset); | |
1097 | if (outrel.r_offset == (bfd_vma) -1) | |
1098 | skip = TRUE; | |
03a12831 AO |
1099 | |
1100 | outrel.r_offset += (input_section->output_section->vma | |
1101 | + input_section->output_offset); | |
1102 | ||
1103 | if (skip) | |
1104 | { | |
1105 | memset (&outrel, 0, sizeof outrel); | |
1106 | relocate = FALSE; | |
1107 | } | |
1108 | else | |
1109 | { | |
1110 | /* h->dynindx may be -1 if this symbol was marked to | |
1111 | become local. */ | |
1112 | if (h == NULL | |
7e2294f9 | 1113 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1114 | { |
1115 | relocate = TRUE; | |
1116 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1117 | outrel.r_addend = value + addend; | |
1118 | } | |
1119 | else | |
1120 | { | |
1121 | BFD_ASSERT (h->dynindx != -1); | |
1122 | relocate = FALSE; | |
1123 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1124 | outrel.r_addend = value + addend; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1129 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1130 | + sreloc->reloc_count)); | |
03a12831 AO |
1131 | ++sreloc->reloc_count; |
1132 | ||
1133 | /* If this reloc is against an external symbol, we do | |
1134 | not want to fiddle with the addend. Otherwise, we | |
1135 | need to include the symbol value so that it becomes | |
1136 | an addend for the dynamic reloc. */ | |
1137 | if (! relocate) | |
1138 | return bfd_reloc_ok; | |
1139 | } | |
252b5132 RH |
1140 | value += addend; |
1141 | bfd_put_32 (input_bfd, value, hit_data); | |
1142 | return bfd_reloc_ok; | |
1143 | ||
1144 | case R_MN10300_24: | |
1145 | value += addend; | |
1146 | ||
010ac81f | 1147 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1148 | return bfd_reloc_overflow; |
1149 | ||
1150 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1151 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1152 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1153 | return bfd_reloc_ok; | |
1154 | ||
1155 | case R_MN10300_16: | |
1156 | value += addend; | |
1157 | ||
010ac81f | 1158 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1159 | return bfd_reloc_overflow; |
1160 | ||
1161 | bfd_put_16 (input_bfd, value, hit_data); | |
1162 | return bfd_reloc_ok; | |
1163 | ||
1164 | case R_MN10300_8: | |
1165 | value += addend; | |
1166 | ||
010ac81f | 1167 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1168 | return bfd_reloc_overflow; |
1169 | ||
1170 | bfd_put_8 (input_bfd, value, hit_data); | |
1171 | return bfd_reloc_ok; | |
1172 | ||
1173 | case R_MN10300_PCREL8: | |
1174 | value -= (input_section->output_section->vma | |
1175 | + input_section->output_offset); | |
1176 | value -= offset; | |
1177 | value += addend; | |
1178 | ||
605d18d4 | 1179 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1180 | return bfd_reloc_overflow; |
1181 | ||
1182 | bfd_put_8 (input_bfd, value, hit_data); | |
1183 | return bfd_reloc_ok; | |
1184 | ||
1185 | case R_MN10300_PCREL16: | |
1186 | value -= (input_section->output_section->vma | |
1187 | + input_section->output_offset); | |
1188 | value -= offset; | |
1189 | value += addend; | |
1190 | ||
605d18d4 | 1191 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1192 | return bfd_reloc_overflow; |
1193 | ||
1194 | bfd_put_16 (input_bfd, value, hit_data); | |
1195 | return bfd_reloc_ok; | |
1196 | ||
1197 | case R_MN10300_PCREL32: | |
1198 | value -= (input_section->output_section->vma | |
1199 | + input_section->output_offset); | |
1200 | value -= offset; | |
1201 | value += addend; | |
1202 | ||
1203 | bfd_put_32 (input_bfd, value, hit_data); | |
1204 | return bfd_reloc_ok; | |
1205 | ||
1206 | case R_MN10300_GNU_VTINHERIT: | |
1207 | case R_MN10300_GNU_VTENTRY: | |
1208 | return bfd_reloc_ok; | |
1209 | ||
03a12831 AO |
1210 | case R_MN10300_GOTPC32: |
1211 | /* Use global offset table as symbol value. */ | |
03a12831 AO |
1212 | value = bfd_get_section_by_name (dynobj, |
1213 | ".got")->output_section->vma; | |
1214 | value -= (input_section->output_section->vma | |
1215 | + input_section->output_offset); | |
1216 | value -= offset; | |
1217 | value += addend; | |
1218 | ||
1219 | bfd_put_32 (input_bfd, value, hit_data); | |
1220 | return bfd_reloc_ok; | |
3b36f7e6 | 1221 | |
03a12831 AO |
1222 | case R_MN10300_GOTPC16: |
1223 | /* Use global offset table as symbol value. */ | |
03a12831 AO |
1224 | value = bfd_get_section_by_name (dynobj, |
1225 | ".got")->output_section->vma; | |
1226 | value -= (input_section->output_section->vma | |
1227 | + input_section->output_offset); | |
1228 | value -= offset; | |
1229 | value += addend; | |
1230 | ||
605d18d4 | 1231 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1232 | return bfd_reloc_overflow; |
1233 | ||
1234 | bfd_put_16 (input_bfd, value, hit_data); | |
1235 | return bfd_reloc_ok; | |
1236 | ||
1237 | case R_MN10300_GOTOFF32: | |
1238 | value -= bfd_get_section_by_name (dynobj, | |
1239 | ".got")->output_section->vma; | |
1240 | value += addend; | |
3b36f7e6 | 1241 | |
03a12831 AO |
1242 | bfd_put_32 (input_bfd, value, hit_data); |
1243 | return bfd_reloc_ok; | |
1244 | ||
1245 | case R_MN10300_GOTOFF24: | |
1246 | value -= bfd_get_section_by_name (dynobj, | |
1247 | ".got")->output_section->vma; | |
1248 | value += addend; | |
3b36f7e6 | 1249 | |
03a12831 AO |
1250 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1251 | return bfd_reloc_overflow; | |
1252 | ||
1253 | bfd_put_8 (input_bfd, value, hit_data); | |
1254 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1255 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1256 | return bfd_reloc_ok; | |
1257 | ||
1258 | case R_MN10300_GOTOFF16: | |
1259 | value -= bfd_get_section_by_name (dynobj, | |
1260 | ".got")->output_section->vma; | |
1261 | value += addend; | |
3b36f7e6 | 1262 | |
605d18d4 | 1263 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1264 | return bfd_reloc_overflow; |
1265 | ||
1266 | bfd_put_16 (input_bfd, value, hit_data); | |
1267 | return bfd_reloc_ok; | |
1268 | ||
1269 | case R_MN10300_PLT32: | |
1270 | if (h != NULL | |
1271 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1272 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1273 | && h->plt.offset != (bfd_vma) -1) | |
1274 | { | |
03a12831 | 1275 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
3b36f7e6 | 1276 | |
03a12831 AO |
1277 | value = (splt->output_section->vma |
1278 | + splt->output_offset | |
1279 | + h->plt.offset) - value; | |
1280 | } | |
1281 | ||
1282 | value -= (input_section->output_section->vma | |
1283 | + input_section->output_offset); | |
1284 | value -= offset; | |
1285 | value += addend; | |
1286 | ||
1287 | bfd_put_32 (input_bfd, value, hit_data); | |
1288 | return bfd_reloc_ok; | |
1289 | ||
1290 | case R_MN10300_PLT16: | |
1291 | if (h != NULL | |
1292 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1293 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1294 | && h->plt.offset != (bfd_vma) -1) | |
1295 | { | |
03a12831 | 1296 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
3b36f7e6 | 1297 | |
03a12831 AO |
1298 | value = (splt->output_section->vma |
1299 | + splt->output_offset | |
1300 | + h->plt.offset) - value; | |
1301 | } | |
1302 | ||
1303 | value -= (input_section->output_section->vma | |
1304 | + input_section->output_offset); | |
1305 | value -= offset; | |
1306 | value += addend; | |
1307 | ||
605d18d4 | 1308 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1309 | return bfd_reloc_overflow; |
1310 | ||
1311 | bfd_put_16 (input_bfd, value, hit_data); | |
1312 | return bfd_reloc_ok; | |
1313 | ||
1314 | case R_MN10300_GOT32: | |
1315 | case R_MN10300_GOT24: | |
1316 | case R_MN10300_GOT16: | |
1317 | { | |
03a12831 | 1318 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
3b36f7e6 | 1319 | |
03a12831 AO |
1320 | if (h != NULL) |
1321 | { | |
1322 | bfd_vma off; | |
1323 | ||
1324 | off = h->got.offset; | |
1325 | BFD_ASSERT (off != (bfd_vma) -1); | |
1326 | ||
1327 | if (! elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1328 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1329 | /* This is actually a static link, or it is a |
1330 | -Bsymbolic link and the symbol is defined | |
1331 | locally, or the symbol was forced to be local | |
1332 | because of a version file. We must initialize | |
1333 | this entry in the global offset table. | |
1334 | ||
1335 | When doing a dynamic link, we create a .rela.got | |
1336 | relocation entry to initialize the value. This | |
1337 | is done in the finish_dynamic_symbol routine. */ | |
1338 | bfd_put_32 (output_bfd, value, | |
1339 | sgot->contents + off); | |
1340 | ||
1341 | value = sgot->output_offset + off; | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | bfd_vma off; | |
1346 | ||
1347 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1348 | ||
1349 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
1350 | ||
1351 | if (info->shared) | |
1352 | { | |
1353 | asection * srelgot; | |
1354 | Elf_Internal_Rela outrel; | |
1355 | ||
1356 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1357 | BFD_ASSERT (srelgot != NULL); | |
1358 | ||
1359 | outrel.r_offset = (sgot->output_section->vma | |
1360 | + sgot->output_offset | |
1361 | + off); | |
1362 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1363 | outrel.r_addend = value; | |
1364 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1365 | (bfd_byte *) (((Elf32_External_Rela *) |
1366 | srelgot->contents) | |
1367 | + srelgot->reloc_count)); | |
03a12831 AO |
1368 | ++ srelgot->reloc_count; |
1369 | } | |
1370 | ||
1371 | value = sgot->output_offset + off; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | value += addend; | |
1376 | ||
1377 | if (r_type == R_MN10300_GOT32) | |
1378 | { | |
1379 | bfd_put_32 (input_bfd, value, hit_data); | |
1380 | return bfd_reloc_ok; | |
1381 | } | |
1382 | else if (r_type == R_MN10300_GOT24) | |
1383 | { | |
1384 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1385 | return bfd_reloc_overflow; | |
1386 | ||
1387 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1388 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1389 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1390 | return bfd_reloc_ok; | |
1391 | } | |
1392 | else if (r_type == R_MN10300_GOT16) | |
1393 | { | |
605d18d4 | 1394 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1395 | return bfd_reloc_overflow; |
1396 | ||
1397 | bfd_put_16 (input_bfd, value, hit_data); | |
1398 | return bfd_reloc_ok; | |
1399 | } | |
1400 | /* Fall through. */ | |
3b36f7e6 | 1401 | |
252b5132 RH |
1402 | default: |
1403 | return bfd_reloc_notsupported; | |
1404 | } | |
1405 | } | |
252b5132 RH |
1406 | \f |
1407 | /* Relocate an MN10300 ELF section. */ | |
603b7257 | 1408 | |
b34976b6 | 1409 | static bfd_boolean |
603b7257 NC |
1410 | mn10300_elf_relocate_section (bfd *output_bfd, |
1411 | struct bfd_link_info *info, | |
1412 | bfd *input_bfd, | |
1413 | asection *input_section, | |
1414 | bfd_byte *contents, | |
1415 | Elf_Internal_Rela *relocs, | |
1416 | Elf_Internal_Sym *local_syms, | |
1417 | asection **local_sections) | |
252b5132 RH |
1418 | { |
1419 | Elf_Internal_Shdr *symtab_hdr; | |
b2a8e766 | 1420 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
1421 | Elf_Internal_Rela *rel, *relend; |
1422 | ||
1423 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
b2a8e766 | 1424 | sym_hashes = elf_sym_hashes (input_bfd); |
252b5132 RH |
1425 | |
1426 | rel = relocs; | |
1427 | relend = relocs + input_section->reloc_count; | |
1428 | for (; rel < relend; rel++) | |
1429 | { | |
1430 | int r_type; | |
1431 | reloc_howto_type *howto; | |
1432 | unsigned long r_symndx; | |
1433 | Elf_Internal_Sym *sym; | |
1434 | asection *sec; | |
1435 | struct elf32_mn10300_link_hash_entry *h; | |
1436 | bfd_vma relocation; | |
1437 | bfd_reloc_status_type r; | |
1438 | ||
1439 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1440 | r_type = ELF32_R_TYPE (rel->r_info); | |
1441 | howto = elf_mn10300_howto_table + r_type; | |
1442 | ||
1443 | /* Just skip the vtable gc relocs. */ | |
1444 | if (r_type == R_MN10300_GNU_VTINHERIT | |
1445 | || r_type == R_MN10300_GNU_VTENTRY) | |
1446 | continue; | |
1447 | ||
252b5132 RH |
1448 | h = NULL; |
1449 | sym = NULL; | |
1450 | sec = NULL; | |
1451 | if (r_symndx < symtab_hdr->sh_info) | |
1452 | { | |
1453 | sym = local_syms + r_symndx; | |
1454 | sec = local_sections[r_symndx]; | |
8517fae7 | 1455 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1456 | } |
1457 | else | |
1458 | { | |
560e09e9 NC |
1459 | bfd_boolean unresolved_reloc; |
1460 | bfd_boolean warned; | |
1461 | struct elf_link_hash_entry *hh; | |
1462 | ||
b2a8e766 AM |
1463 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1464 | r_symndx, symtab_hdr, sym_hashes, | |
1465 | hh, sec, relocation, | |
1466 | unresolved_reloc, warned); | |
560e09e9 NC |
1467 | |
1468 | h = (struct elf32_mn10300_link_hash_entry *) hh; | |
1469 | ||
1470 | if ((h->root.root.type == bfd_link_hash_defined | |
252b5132 | 1471 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 1472 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
1473 | || r_type == R_MN10300_GOTPC16 |
1474 | || (( r_type == R_MN10300_PLT32 | |
1475 | || r_type == R_MN10300_PLT16) | |
1476 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
1477 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
1478 | && h->root.plt.offset != (bfd_vma) -1) | |
1479 | || (( r_type == R_MN10300_GOT32 | |
1480 | || r_type == R_MN10300_GOT24 | |
1481 | || r_type == R_MN10300_GOT16) | |
1482 | && elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1483 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
146ccdbb | 1484 | || (r_type == R_MN10300_32 |
bfff1642 NC |
1485 | /* _32 relocs in executables force _COPY relocs, |
1486 | such that the address of the symbol ends up | |
1487 | being local. */ | |
efde2f2c | 1488 | && !info->executable |
7e2294f9 | 1489 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
03a12831 AO |
1490 | && ((input_section->flags & SEC_ALLOC) != 0 |
1491 | /* DWARF will emit R_MN10300_32 relocations | |
1492 | in its sections against symbols defined | |
1493 | externally in shared libraries. We can't | |
1494 | do anything with them here. */ | |
1495 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1496 | && h->root.def_dynamic))))) |
560e09e9 NC |
1497 | /* In these cases, we don't need the relocation |
1498 | value. We check specially because in some | |
1499 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 1500 | relocation = 0; |
560e09e9 | 1501 | |
ab96bf03 | 1502 | else if (!info->relocatable && unresolved_reloc) |
560e09e9 | 1503 | (*_bfd_error_handler) |
843fe662 L |
1504 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
1505 | input_bfd, | |
1506 | input_section, | |
1507 | (long) rel->r_offset, | |
1508 | howto->name, | |
1509 | h->root.root.root.string); | |
252b5132 RH |
1510 | } |
1511 | ||
ab96bf03 | 1512 | if (sec != NULL && elf_discarded_section (sec)) |
e4067dbb DJ |
1513 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
1514 | rel, relend, howto, contents); | |
ab96bf03 AM |
1515 | |
1516 | if (info->relocatable) | |
1517 | continue; | |
1518 | ||
252b5132 RH |
1519 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1520 | input_section, | |
1521 | contents, rel->r_offset, | |
1522 | relocation, rel->r_addend, | |
603b7257 | 1523 | (struct elf_link_hash_entry *) h, |
03a12831 | 1524 | r_symndx, |
252b5132 RH |
1525 | info, sec, h == NULL); |
1526 | ||
1527 | if (r != bfd_reloc_ok) | |
1528 | { | |
1529 | const char *name; | |
603b7257 | 1530 | const char *msg = NULL; |
252b5132 RH |
1531 | |
1532 | if (h != NULL) | |
1533 | name = h->root.root.root.string; | |
1534 | else | |
1535 | { | |
1536 | name = (bfd_elf_string_from_elf_section | |
1537 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1538 | if (name == NULL || *name == '\0') | |
1539 | name = bfd_section_name (input_bfd, sec); | |
1540 | } | |
1541 | ||
1542 | switch (r) | |
1543 | { | |
1544 | case bfd_reloc_overflow: | |
1545 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1546 | (info, (h ? &h->root.root : NULL), name, |
1547 | howto->name, (bfd_vma) 0, input_bfd, | |
1548 | input_section, rel->r_offset))) | |
b34976b6 | 1549 | return FALSE; |
252b5132 RH |
1550 | break; |
1551 | ||
1552 | case bfd_reloc_undefined: | |
1553 | if (! ((*info->callbacks->undefined_symbol) | |
1554 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1555 | rel->r_offset, TRUE))) |
1556 | return FALSE; | |
252b5132 RH |
1557 | break; |
1558 | ||
1559 | case bfd_reloc_outofrange: | |
1560 | msg = _("internal error: out of range error"); | |
1561 | goto common_error; | |
1562 | ||
1563 | case bfd_reloc_notsupported: | |
1564 | msg = _("internal error: unsupported relocation error"); | |
1565 | goto common_error; | |
1566 | ||
1567 | case bfd_reloc_dangerous: | |
c9b57b7e DD |
1568 | if (r_type == R_MN10300_PCREL32) |
1569 | msg = _("error: inappropriate relocation type for shared" | |
1570 | " library (did you forget -fpic?)"); | |
1571 | else | |
1572 | msg = _("internal error: suspicious relocation type used" | |
1573 | " in shared library"); | |
252b5132 RH |
1574 | goto common_error; |
1575 | ||
1576 | default: | |
1577 | msg = _("internal error: unknown error"); | |
603b7257 | 1578 | /* Fall through. */ |
252b5132 RH |
1579 | |
1580 | common_error: | |
1581 | if (!((*info->callbacks->warning) | |
1582 | (info, msg, name, input_bfd, input_section, | |
1583 | rel->r_offset))) | |
b34976b6 | 1584 | return FALSE; |
252b5132 RH |
1585 | break; |
1586 | } | |
1587 | } | |
1588 | } | |
1589 | ||
b34976b6 | 1590 | return TRUE; |
252b5132 RH |
1591 | } |
1592 | ||
1593 | /* Finish initializing one hash table entry. */ | |
603b7257 | 1594 | |
b34976b6 | 1595 | static bfd_boolean |
603b7257 NC |
1596 | elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry, |
1597 | void * in_args) | |
252b5132 RH |
1598 | { |
1599 | struct elf32_mn10300_link_hash_entry *entry; | |
603b7257 | 1600 | struct bfd_link_info *link_info = (struct bfd_link_info *) in_args; |
252b5132 RH |
1601 | unsigned int byte_count = 0; |
1602 | ||
010ac81f | 1603 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 RH |
1604 | |
1605 | /* If we already know we want to convert "call" to "calls" for calls | |
1606 | to this symbol, then return now. */ | |
1607 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 1608 | return TRUE; |
252b5132 RH |
1609 | |
1610 | /* If there are no named calls to this symbol, or there's nothing we | |
1055df0f AO |
1611 | can move from the function itself into the "call" instruction, |
1612 | then note that all "call" instructions should be converted into | |
1613 | "calls" instructions and return. If a symbol is available for | |
1614 | dynamic symbol resolution (overridable or overriding), avoid | |
1615 | custom calling conventions. */ | |
252b5132 | 1616 | if (entry->direct_calls == 0 |
1055df0f AO |
1617 | || (entry->stack_size == 0 && entry->movm_args == 0) |
1618 | || (elf_hash_table (link_info)->dynamic_sections_created | |
1619 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL | |
1620 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) | |
252b5132 RH |
1621 | { |
1622 | /* Make a note that we should convert "call" instructions to "calls" | |
1623 | instructions for calls to this symbol. */ | |
1624 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 1625 | return TRUE; |
252b5132 RH |
1626 | } |
1627 | ||
1628 | /* We may be able to move some instructions from the function itself into | |
1629 | the "call" instruction. Count how many bytes we might be able to | |
1630 | eliminate in the function itself. */ | |
1631 | ||
1632 | /* A movm instruction is two bytes. */ | |
1633 | if (entry->movm_args) | |
1634 | byte_count += 2; | |
1635 | ||
1636 | /* Count the insn to allocate stack space too. */ | |
1a101a42 AM |
1637 | if (entry->stack_size > 0) |
1638 | { | |
1639 | if (entry->stack_size <= 128) | |
1640 | byte_count += 3; | |
1641 | else | |
1642 | byte_count += 4; | |
1643 | } | |
252b5132 RH |
1644 | |
1645 | /* If using "call" will result in larger code, then turn all | |
4cc11e76 | 1646 | the associated "call" instructions into "calls" instructions. */ |
252b5132 RH |
1647 | if (byte_count < entry->direct_calls) |
1648 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1649 | ||
1650 | /* This routine never fails. */ | |
b34976b6 | 1651 | return TRUE; |
252b5132 RH |
1652 | } |
1653 | ||
eb13e63f | 1654 | /* Used to count hash table entries. */ |
603b7257 | 1655 | |
eb13e63f DD |
1656 | static bfd_boolean |
1657 | elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, | |
603b7257 | 1658 | void * in_args) |
eb13e63f | 1659 | { |
bfff1642 | 1660 | int *count = (int *) in_args; |
eb13e63f DD |
1661 | |
1662 | (*count) ++; | |
1663 | return TRUE; | |
1664 | } | |
1665 | ||
1666 | /* Used to enumerate hash table entries into a linear array. */ | |
603b7257 | 1667 | |
eb13e63f DD |
1668 | static bfd_boolean |
1669 | elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, | |
603b7257 | 1670 | void * in_args) |
eb13e63f DD |
1671 | { |
1672 | struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; | |
1673 | ||
1674 | **ptr = gen_entry; | |
1675 | (*ptr) ++; | |
1676 | return TRUE; | |
1677 | } | |
1678 | ||
1679 | /* Used to sort the array created by the above. */ | |
603b7257 | 1680 | |
eb13e63f DD |
1681 | static int |
1682 | sort_by_value (const void *va, const void *vb) | |
1683 | { | |
1684 | struct elf32_mn10300_link_hash_entry *a | |
bfff1642 | 1685 | = *(struct elf32_mn10300_link_hash_entry **) va; |
eb13e63f | 1686 | struct elf32_mn10300_link_hash_entry *b |
bfff1642 | 1687 | = *(struct elf32_mn10300_link_hash_entry **) vb; |
eb13e63f DD |
1688 | |
1689 | return a->value - b->value; | |
1690 | } | |
1691 | ||
603b7257 NC |
1692 | /* Compute the stack size and movm arguments for the function |
1693 | referred to by HASH at address ADDR in section with | |
1694 | contents CONTENTS, store the information in the hash table. */ | |
1695 | ||
1696 | static void | |
1697 | compute_function_info (bfd *abfd, | |
1698 | struct elf32_mn10300_link_hash_entry *hash, | |
1699 | bfd_vma addr, | |
1700 | unsigned char *contents) | |
1701 | { | |
1702 | unsigned char byte1, byte2; | |
1703 | /* We only care about a very small subset of the possible prologue | |
1704 | sequences here. Basically we look for: | |
1705 | ||
1706 | movm [d2,d3,a2,a3],sp (optional) | |
1707 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
1708 | 8 bit number) | |
1709 | ||
1710 | If we find anything else, we quit. */ | |
1711 | ||
1712 | /* Look for movm [regs],sp. */ | |
1713 | byte1 = bfd_get_8 (abfd, contents + addr); | |
1714 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
1715 | ||
1716 | if (byte1 == 0xcf) | |
1717 | { | |
1718 | hash->movm_args = byte2; | |
1719 | addr += 2; | |
1720 | byte1 = bfd_get_8 (abfd, contents + addr); | |
1721 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
1722 | } | |
1723 | ||
1724 | /* Now figure out how much stack space will be allocated by the movm | |
1725 | instruction. We need this kept separate from the function's normal | |
1726 | stack space. */ | |
1727 | if (hash->movm_args) | |
1728 | { | |
1729 | /* Space for d2. */ | |
1730 | if (hash->movm_args & 0x80) | |
1731 | hash->movm_stack_size += 4; | |
1732 | ||
1733 | /* Space for d3. */ | |
1734 | if (hash->movm_args & 0x40) | |
1735 | hash->movm_stack_size += 4; | |
1736 | ||
1737 | /* Space for a2. */ | |
1738 | if (hash->movm_args & 0x20) | |
1739 | hash->movm_stack_size += 4; | |
1740 | ||
1741 | /* Space for a3. */ | |
1742 | if (hash->movm_args & 0x10) | |
1743 | hash->movm_stack_size += 4; | |
1744 | ||
1745 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
1746 | if (hash->movm_args & 0x08) | |
1747 | hash->movm_stack_size += 8 * 4; | |
1748 | ||
1749 | if (bfd_get_mach (abfd) == bfd_mach_am33 | |
1750 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
1751 | { | |
1752 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
1753 | if (hash->movm_args & 0x1) | |
1754 | hash->movm_stack_size += 6 * 4; | |
1755 | ||
1756 | /* exreg1 space. e4, e5, e6, e7 */ | |
1757 | if (hash->movm_args & 0x2) | |
1758 | hash->movm_stack_size += 4 * 4; | |
1759 | ||
1760 | /* exreg0 space. e2, e3 */ | |
1761 | if (hash->movm_args & 0x4) | |
1762 | hash->movm_stack_size += 2 * 4; | |
1763 | } | |
1764 | } | |
1765 | ||
1766 | /* Now look for the two stack adjustment variants. */ | |
1767 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
1768 | { | |
1769 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
1770 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
1771 | ||
1772 | hash->stack_size = -temp; | |
1773 | } | |
1774 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
1775 | { | |
1776 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
1777 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
1778 | temp = -temp; | |
1779 | ||
1780 | if (temp < 255) | |
1781 | hash->stack_size = temp; | |
1782 | } | |
1783 | ||
1784 | /* If the total stack to be allocated by the call instruction is more | |
1785 | than 255 bytes, then we can't remove the stack adjustment by using | |
1786 | "call" (we might still be able to remove the "movm" instruction. */ | |
1787 | if (hash->stack_size + hash->movm_stack_size > 255) | |
1788 | hash->stack_size = 0; | |
1789 | } | |
1790 | ||
1791 | /* Delete some bytes from a section while relaxing. */ | |
1792 | ||
1793 | static bfd_boolean | |
1794 | mn10300_elf_relax_delete_bytes (bfd *abfd, | |
1795 | asection *sec, | |
1796 | bfd_vma addr, | |
1797 | int count) | |
1798 | { | |
1799 | Elf_Internal_Shdr *symtab_hdr; | |
1800 | unsigned int sec_shndx; | |
1801 | bfd_byte *contents; | |
1802 | Elf_Internal_Rela *irel, *irelend; | |
1803 | Elf_Internal_Rela *irelalign; | |
1804 | bfd_vma toaddr; | |
1805 | Elf_Internal_Sym *isym, *isymend; | |
1806 | struct elf_link_hash_entry **sym_hashes; | |
1807 | struct elf_link_hash_entry **end_hashes; | |
1808 | unsigned int symcount; | |
1809 | ||
1810 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1811 | ||
1812 | contents = elf_section_data (sec)->this_hdr.contents; | |
1813 | ||
603b7257 NC |
1814 | irelalign = NULL; |
1815 | toaddr = sec->size; | |
1816 | ||
1817 | irel = elf_section_data (sec)->relocs; | |
1818 | irelend = irel + sec->reloc_count; | |
1819 | ||
cf4a529b NC |
1820 | if (sec->reloc_count > 0) |
1821 | { | |
1822 | /* If there is an align reloc at the end of the section ignore it. | |
1823 | GAS creates these relocs for reasons of its own, and they just | |
1824 | serve to keep the section artifically inflated. */ | |
1825 | if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN) | |
1826 | --irelend; | |
569006e5 | 1827 | |
cf4a529b | 1828 | /* The deletion must stop at the next ALIGN reloc for an aligment |
b5f5fd96 NC |
1829 | power larger than, or not a multiple of, the number of bytes we |
1830 | are deleting. */ | |
cf4a529b | 1831 | for (; irel < irelend; irel++) |
b5f5fd96 NC |
1832 | { |
1833 | int alignment = 1 << irel->r_addend; | |
1834 | ||
1835 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
1836 | && irel->r_offset > addr | |
1837 | && irel->r_offset < toaddr | |
1838 | && (count < alignment | |
1839 | || alignment % count != 0)) | |
1840 | { | |
1841 | irelalign = irel; | |
1842 | toaddr = irel->r_offset; | |
1843 | break; | |
1844 | } | |
1845 | } | |
cf4a529b | 1846 | } |
569006e5 | 1847 | |
603b7257 NC |
1848 | /* Actually delete the bytes. */ |
1849 | memmove (contents + addr, contents + addr + count, | |
1850 | (size_t) (toaddr - addr - count)); | |
569006e5 NC |
1851 | |
1852 | /* Adjust the section's size if we are shrinking it, or else | |
1853 | pad the bytes between the end of the shrunken region and | |
1854 | the start of the next region with NOP codes. */ | |
1855 | if (irelalign == NULL) | |
1856 | { | |
1857 | sec->size -= count; | |
1858 | /* Include symbols at the end of the section, but | |
1859 | not at the end of a sub-region of the section. */ | |
1860 | toaddr ++; | |
1861 | } | |
1862 | else | |
1863 | { | |
1864 | int i; | |
1865 | ||
1866 | #define NOP_OPCODE 0xcb | |
1867 | ||
1868 | for (i = 0; i < count; i ++) | |
1869 | bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); | |
1870 | } | |
603b7257 NC |
1871 | |
1872 | /* Adjust all the relocs. */ | |
1873 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1874 | { | |
1875 | /* Get the new reloc address. */ | |
1876 | if ((irel->r_offset > addr | |
b5f5fd96 NC |
1877 | && irel->r_offset < toaddr) |
1878 | || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
1879 | && irel->r_offset == toaddr)) | |
603b7257 NC |
1880 | irel->r_offset -= count; |
1881 | } | |
1882 | ||
b5f5fd96 NC |
1883 | /* Adjust the local symbols in the section, reducing their value |
1884 | by the number of bytes deleted. Note - symbols within the deleted | |
1885 | region are moved to the address of the start of the region, which | |
1886 | actually means that they will address the byte beyond the end of | |
1887 | the region once the deletion has been completed. */ | |
603b7257 NC |
1888 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1889 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1890 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1891 | { | |
1892 | if (isym->st_shndx == sec_shndx | |
1893 | && isym->st_value > addr | |
569006e5 | 1894 | && isym->st_value < toaddr) |
b5f5fd96 NC |
1895 | { |
1896 | if (isym->st_value < addr + count) | |
1897 | isym->st_value = addr; | |
1898 | else | |
1899 | isym->st_value -= count; | |
1900 | } | |
bfff1642 NC |
1901 | /* Adjust the function symbol's size as well. */ |
1902 | else if (isym->st_shndx == sec_shndx | |
1903 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC | |
1904 | && isym->st_value + isym->st_size > addr | |
569006e5 | 1905 | && isym->st_value + isym->st_size < toaddr) |
bfff1642 | 1906 | isym->st_size -= count; |
603b7257 NC |
1907 | } |
1908 | ||
1909 | /* Now adjust the global symbols defined in this section. */ | |
1910 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1911 | - symtab_hdr->sh_info); | |
1912 | sym_hashes = elf_sym_hashes (abfd); | |
1913 | end_hashes = sym_hashes + symcount; | |
1914 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1915 | { | |
1916 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1917 | ||
1918 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1919 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1920 | && sym_hash->root.u.def.section == sec | |
1921 | && sym_hash->root.u.def.value > addr | |
569006e5 | 1922 | && sym_hash->root.u.def.value < toaddr) |
b5f5fd96 NC |
1923 | { |
1924 | if (sym_hash->root.u.def.value < addr + count) | |
1925 | sym_hash->root.u.def.value = addr; | |
1926 | else | |
1927 | sym_hash->root.u.def.value -= count; | |
1928 | } | |
bfff1642 NC |
1929 | /* Adjust the function symbol's size as well. */ |
1930 | else if (sym_hash->root.type == bfd_link_hash_defined | |
1931 | && sym_hash->root.u.def.section == sec | |
1932 | && sym_hash->type == STT_FUNC | |
1933 | && sym_hash->root.u.def.value + sym_hash->size > addr | |
569006e5 | 1934 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) |
bfff1642 | 1935 | sym_hash->size -= count; |
603b7257 NC |
1936 | } |
1937 | ||
b5f5fd96 NC |
1938 | /* See if we can move the ALIGN reloc forward. |
1939 | We have adjusted r_offset for it already. */ | |
1940 | if (irelalign != NULL) | |
1941 | { | |
1942 | bfd_vma alignto, alignaddr; | |
1943 | ||
1944 | if ((int) irelalign->r_addend > 0) | |
1945 | { | |
1946 | /* This is the old address. */ | |
1947 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); | |
1948 | /* This is where the align points to now. */ | |
1949 | alignaddr = BFD_ALIGN (irelalign->r_offset, | |
1950 | 1 << irelalign->r_addend); | |
1951 | if (alignaddr < alignto) | |
1952 | /* Tail recursion. */ | |
1953 | return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr, | |
1954 | (int) (alignto - alignaddr)); | |
1955 | } | |
1956 | } | |
1957 | ||
603b7257 NC |
1958 | return TRUE; |
1959 | } | |
1960 | ||
1961 | /* Return TRUE if a symbol exists at the given address, else return | |
1962 | FALSE. */ | |
1963 | ||
1964 | static bfd_boolean | |
1965 | mn10300_elf_symbol_address_p (bfd *abfd, | |
1966 | asection *sec, | |
1967 | Elf_Internal_Sym *isym, | |
1968 | bfd_vma addr) | |
1969 | { | |
1970 | Elf_Internal_Shdr *symtab_hdr; | |
1971 | unsigned int sec_shndx; | |
1972 | Elf_Internal_Sym *isymend; | |
1973 | struct elf_link_hash_entry **sym_hashes; | |
1974 | struct elf_link_hash_entry **end_hashes; | |
1975 | unsigned int symcount; | |
1976 | ||
1977 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1978 | ||
1979 | /* Examine all the symbols. */ | |
1980 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1981 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1982 | if (isym->st_shndx == sec_shndx | |
1983 | && isym->st_value == addr) | |
1984 | return TRUE; | |
1985 | ||
1986 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1987 | - symtab_hdr->sh_info); | |
1988 | sym_hashes = elf_sym_hashes (abfd); | |
1989 | end_hashes = sym_hashes + symcount; | |
1990 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1991 | { | |
1992 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1993 | ||
1994 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1995 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1996 | && sym_hash->root.u.def.section == sec | |
1997 | && sym_hash->root.u.def.value == addr) | |
1998 | return TRUE; | |
1999 | } | |
2000 | ||
2001 | return FALSE; | |
2002 | } | |
eb13e63f | 2003 | |
252b5132 RH |
2004 | /* This function handles relaxing for the mn10300. |
2005 | ||
4cc11e76 | 2006 | There are quite a few relaxing opportunities available on the mn10300: |
252b5132 RH |
2007 | |
2008 | * calls:32 -> calls:16 2 bytes | |
2009 | * call:32 -> call:16 2 bytes | |
2010 | ||
2011 | * call:32 -> calls:32 1 byte | |
2012 | * call:16 -> calls:16 1 byte | |
2013 | * These are done anytime using "calls" would result | |
2014 | in smaller code, or when necessary to preserve the | |
2015 | meaning of the program. | |
2016 | ||
2017 | * call:32 varies | |
2018 | * call:16 | |
2019 | * In some circumstances we can move instructions | |
2020 | from a function prologue into a "call" instruction. | |
2021 | This is only done if the resulting code is no larger | |
2022 | than the original code. | |
2023 | ||
252b5132 RH |
2024 | * jmp:32 -> jmp:16 2 bytes |
2025 | * jmp:16 -> bra:8 1 byte | |
2026 | ||
2027 | * If the previous instruction is a conditional branch | |
2028 | around the jump/bra, we may be able to reverse its condition | |
2029 | and change its target to the jump's target. The jump/bra | |
2030 | can then be deleted. 2 bytes | |
2031 | ||
2032 | * mov abs32 -> mov abs16 1 or 2 bytes | |
2033 | ||
2034 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
2035 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
2036 | ||
2037 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
2038 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
2039 | ||
2040 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
2041 | and somewhat more difficult to support. */ | |
2042 | ||
b34976b6 | 2043 | static bfd_boolean |
603b7257 NC |
2044 | mn10300_elf_relax_section (bfd *abfd, |
2045 | asection *sec, | |
2046 | struct bfd_link_info *link_info, | |
2047 | bfd_boolean *again) | |
252b5132 RH |
2048 | { |
2049 | Elf_Internal_Shdr *symtab_hdr; | |
2050 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
2051 | Elf_Internal_Rela *irel, *irelend; |
2052 | bfd_byte *contents = NULL; | |
6cdc0ccc | 2053 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 2054 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 2055 | asection *section = sec; |
fc91707c | 2056 | bfd_vma align_gap_adjustment; |
252b5132 | 2057 | |
c8a1f254 NS |
2058 | if (link_info->relocatable) |
2059 | (*link_info->callbacks->einfo) | |
2060 | (_("%P%F: --relax and -r may not be used together\n")); | |
2061 | ||
252b5132 | 2062 | /* Assume nothing changes. */ |
b34976b6 | 2063 | *again = FALSE; |
252b5132 RH |
2064 | |
2065 | /* We need a pointer to the mn10300 specific hash table. */ | |
2066 | hash_table = elf32_mn10300_hash_table (link_info); | |
4dfe6ac6 NC |
2067 | if (hash_table == NULL) |
2068 | return FALSE; | |
252b5132 RH |
2069 | |
2070 | /* Initialize fields in each hash table entry the first time through. */ | |
2071 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
2072 | { | |
2073 | bfd *input_bfd; | |
2074 | ||
2075 | /* Iterate over all the input bfds. */ | |
2076 | for (input_bfd = link_info->input_bfds; | |
2077 | input_bfd != NULL; | |
2078 | input_bfd = input_bfd->link_next) | |
2079 | { | |
252b5132 RH |
2080 | /* We're going to need all the symbols for each bfd. */ |
2081 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 2082 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2083 | { |
6cdc0ccc AM |
2084 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2085 | if (isymbuf == NULL) | |
2086 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2087 | symtab_hdr->sh_info, 0, | |
2088 | NULL, NULL, NULL); | |
2089 | if (isymbuf == NULL) | |
010ac81f KH |
2090 | goto error_return; |
2091 | } | |
252b5132 RH |
2092 | |
2093 | /* Iterate over each section in this bfd. */ | |
2094 | for (section = input_bfd->sections; | |
2095 | section != NULL; | |
2096 | section = section->next) | |
2097 | { | |
2098 | struct elf32_mn10300_link_hash_entry *hash; | |
86033394 | 2099 | asection *sym_sec = NULL; |
252b5132 RH |
2100 | const char *sym_name; |
2101 | char *new_name; | |
252b5132 | 2102 | |
e948afaf | 2103 | /* If there's nothing to do in this section, skip it. */ |
eb13e63f DD |
2104 | if (! ((section->flags & SEC_RELOC) != 0 |
2105 | && section->reloc_count != 0)) | |
2106 | continue; | |
2107 | if ((section->flags & SEC_ALLOC) == 0) | |
e948afaf AO |
2108 | continue; |
2109 | ||
252b5132 RH |
2110 | /* Get cached copy of section contents if it exists. */ |
2111 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2112 | contents = elf_section_data (section)->this_hdr.contents; | |
eea6121a | 2113 | else if (section->size != 0) |
252b5132 RH |
2114 | { |
2115 | /* Go get them off disk. */ | |
eea6121a AM |
2116 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2117 | &contents)) | |
252b5132 RH |
2118 | goto error_return; |
2119 | } | |
2120 | else | |
6cdc0ccc | 2121 | contents = NULL; |
252b5132 RH |
2122 | |
2123 | /* If there aren't any relocs, then there's nothing to do. */ | |
2124 | if ((section->flags & SEC_RELOC) != 0 | |
2125 | && section->reloc_count != 0) | |
2126 | { | |
252b5132 | 2127 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2128 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2129 | NULL, NULL, | |
2130 | link_info->keep_memory); | |
252b5132 RH |
2131 | if (internal_relocs == NULL) |
2132 | goto error_return; | |
252b5132 RH |
2133 | |
2134 | /* Now examine each relocation. */ | |
2135 | irel = internal_relocs; | |
2136 | irelend = irel + section->reloc_count; | |
2137 | for (; irel < irelend; irel++) | |
2138 | { | |
2139 | long r_type; | |
2140 | unsigned long r_index; | |
2141 | unsigned char code; | |
2142 | ||
2143 | r_type = ELF32_R_TYPE (irel->r_info); | |
2144 | r_index = ELF32_R_SYM (irel->r_info); | |
2145 | ||
010ac81f | 2146 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
2147 | goto error_return; |
2148 | ||
2149 | /* We need the name and hash table entry of the target | |
2150 | symbol! */ | |
2151 | hash = NULL; | |
252b5132 RH |
2152 | sym_sec = NULL; |
2153 | ||
2154 | if (r_index < symtab_hdr->sh_info) | |
2155 | { | |
2156 | /* A local symbol. */ | |
6cdc0ccc | 2157 | Elf_Internal_Sym *isym; |
dc810e39 AM |
2158 | struct elf_link_hash_table *elftab; |
2159 | bfd_size_type amt; | |
252b5132 | 2160 | |
6cdc0ccc AM |
2161 | isym = isymbuf + r_index; |
2162 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2163 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2164 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2165 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2166 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2167 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2168 | else |
2169 | sym_sec | |
2170 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2171 | isym->st_shndx); |
a7c10850 | 2172 | |
9ad5cbcf AM |
2173 | sym_name |
2174 | = bfd_elf_string_from_elf_section (input_bfd, | |
2175 | (symtab_hdr | |
2176 | ->sh_link), | |
6cdc0ccc | 2177 | isym->st_name); |
252b5132 RH |
2178 | |
2179 | /* If it isn't a function, then we don't care | |
2180 | about it. */ | |
6cdc0ccc | 2181 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
2182 | continue; |
2183 | ||
2184 | /* Tack on an ID so we can uniquely identify this | |
2185 | local symbol in the global hash table. */ | |
dc810e39 AM |
2186 | amt = strlen (sym_name) + 10; |
2187 | new_name = bfd_malloc (amt); | |
bfff1642 | 2188 | if (new_name == NULL) |
252b5132 RH |
2189 | goto error_return; |
2190 | ||
f60ca5e3 | 2191 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2192 | sym_name = new_name; |
2193 | ||
dc810e39 AM |
2194 | elftab = &hash_table->static_hash_table->root; |
2195 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2196 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2197 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2198 | free (new_name); |
2199 | } | |
2200 | else | |
2201 | { | |
2202 | r_index -= symtab_hdr->sh_info; | |
2203 | hash = (struct elf32_mn10300_link_hash_entry *) | |
2204 | elf_sym_hashes (input_bfd)[r_index]; | |
2205 | } | |
2206 | ||
eb13e63f DD |
2207 | sym_name = hash->root.root.root.string; |
2208 | if ((section->flags & SEC_CODE) != 0) | |
2209 | { | |
2210 | /* If this is not a "call" instruction, then we | |
2211 | should convert "call" instructions to "calls" | |
2212 | instructions. */ | |
2213 | code = bfd_get_8 (input_bfd, | |
2214 | contents + irel->r_offset - 1); | |
2215 | if (code != 0xdd && code != 0xcd) | |
2216 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2217 | } | |
252b5132 | 2218 | |
6cdc0ccc AM |
2219 | /* If this is a jump/call, then bump the |
2220 | direct_calls counter. Else force "call" to | |
2221 | "calls" conversions. */ | |
252b5132 | 2222 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
2223 | || r_type == R_MN10300_PLT32 |
2224 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
2225 | || r_type == R_MN10300_PCREL16) |
2226 | hash->direct_calls++; | |
2227 | else | |
2228 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | /* Now look at the actual contents to get the stack size, | |
2233 | and a list of what registers were saved in the prologue | |
2234 | (ie movm_args). */ | |
2235 | if ((section->flags & SEC_CODE) != 0) | |
2236 | { | |
6cdc0ccc | 2237 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 2238 | unsigned int sec_shndx; |
6cdc0ccc AM |
2239 | struct elf_link_hash_entry **hashes; |
2240 | struct elf_link_hash_entry **end_hashes; | |
2241 | unsigned int symcount; | |
252b5132 | 2242 | |
9ad5cbcf AM |
2243 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2244 | section); | |
252b5132 | 2245 | |
1055df0f AO |
2246 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2247 | - symtab_hdr->sh_info); | |
2248 | hashes = elf_sym_hashes (input_bfd); | |
2249 | end_hashes = hashes + symcount; | |
2250 | ||
252b5132 RH |
2251 | /* Look at each function defined in this section and |
2252 | update info for that function. */ | |
6cdc0ccc AM |
2253 | isymend = isymbuf + symtab_hdr->sh_info; |
2254 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2255 | { |
6cdc0ccc AM |
2256 | if (isym->st_shndx == sec_shndx |
2257 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 2258 | { |
dc810e39 AM |
2259 | struct elf_link_hash_table *elftab; |
2260 | bfd_size_type amt; | |
1055df0f AO |
2261 | struct elf_link_hash_entry **lhashes = hashes; |
2262 | ||
2263 | /* Skip a local symbol if it aliases a | |
2264 | global one. */ | |
2265 | for (; lhashes < end_hashes; lhashes++) | |
2266 | { | |
2267 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; | |
2268 | if ((hash->root.root.type == bfd_link_hash_defined | |
2269 | || hash->root.root.type == bfd_link_hash_defweak) | |
2270 | && hash->root.root.u.def.section == section | |
2271 | && hash->root.type == STT_FUNC | |
2272 | && hash->root.root.u.def.value == isym->st_value) | |
2273 | break; | |
2274 | } | |
2275 | if (lhashes != end_hashes) | |
2276 | continue; | |
dc810e39 | 2277 | |
6cdc0ccc | 2278 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2279 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2280 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2281 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2282 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2283 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2284 | else |
2285 | sym_sec | |
2286 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2287 | isym->st_shndx); |
252b5132 | 2288 | |
dc810e39 AM |
2289 | sym_name = (bfd_elf_string_from_elf_section |
2290 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 2291 | isym->st_name)); |
252b5132 RH |
2292 | |
2293 | /* Tack on an ID so we can uniquely identify this | |
2294 | local symbol in the global hash table. */ | |
dc810e39 AM |
2295 | amt = strlen (sym_name) + 10; |
2296 | new_name = bfd_malloc (amt); | |
bfff1642 | 2297 | if (new_name == NULL) |
252b5132 RH |
2298 | goto error_return; |
2299 | ||
f60ca5e3 | 2300 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2301 | sym_name = new_name; |
2302 | ||
dc810e39 AM |
2303 | elftab = &hash_table->static_hash_table->root; |
2304 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2305 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2306 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2307 | free (new_name); |
2308 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 2309 | isym->st_value, contents); |
eb13e63f | 2310 | hash->value = isym->st_value; |
252b5132 RH |
2311 | } |
2312 | } | |
2313 | ||
6cdc0ccc | 2314 | for (; hashes < end_hashes; hashes++) |
252b5132 | 2315 | { |
6cdc0ccc | 2316 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2317 | if ((hash->root.root.type == bfd_link_hash_defined |
2318 | || hash->root.root.type == bfd_link_hash_defweak) | |
2319 | && hash->root.root.u.def.section == section | |
9bb351fd | 2320 | && hash->root.type == STT_FUNC) |
252b5132 RH |
2321 | compute_function_info (input_bfd, hash, |
2322 | (hash)->root.root.u.def.value, | |
2323 | contents); | |
2324 | } | |
2325 | } | |
2326 | ||
2327 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2328 | if (internal_relocs != NULL |
2329 | && elf_section_data (section)->relocs != internal_relocs) | |
2330 | free (internal_relocs); | |
2331 | internal_relocs = NULL; | |
252b5132 RH |
2332 | |
2333 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2334 | if (contents != NULL |
2335 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2336 | { |
2337 | if (! link_info->keep_memory) | |
6cdc0ccc | 2338 | free (contents); |
252b5132 RH |
2339 | else |
2340 | { | |
2341 | /* Cache the section contents for elf_link_input_bfd. */ | |
2342 | elf_section_data (section)->this_hdr.contents = contents; | |
2343 | } | |
252b5132 | 2344 | } |
6cdc0ccc | 2345 | contents = NULL; |
9ad5cbcf AM |
2346 | } |
2347 | ||
252b5132 | 2348 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2349 | if (isymbuf != NULL |
2350 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2351 | { |
2352 | if (! link_info->keep_memory) | |
6cdc0ccc | 2353 | free (isymbuf); |
252b5132 RH |
2354 | else |
2355 | { | |
2356 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 2357 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 2358 | } |
252b5132 | 2359 | } |
6cdc0ccc | 2360 | isymbuf = NULL; |
252b5132 RH |
2361 | } |
2362 | ||
2363 | /* Now iterate on each symbol in the hash table and perform | |
2364 | the final initialization steps on each. */ | |
2365 | elf32_mn10300_link_hash_traverse (hash_table, | |
2366 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2367 | link_info); |
252b5132 RH |
2368 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2369 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2370 | link_info); |
252b5132 | 2371 | |
eb13e63f DD |
2372 | { |
2373 | /* This section of code collects all our local symbols, sorts | |
2374 | them by value, and looks for multiple symbols referring to | |
2375 | the same address. For those symbols, the flags are merged. | |
2376 | At this point, the only flag that can be set is | |
2377 | MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags | |
2378 | together. */ | |
2379 | int static_count = 0, i; | |
2380 | struct elf32_mn10300_link_hash_entry **entries; | |
2381 | struct elf32_mn10300_link_hash_entry **ptr; | |
2382 | ||
2383 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2384 | elf32_mn10300_count_hash_table_entries, | |
2385 | &static_count); | |
2386 | ||
603b7257 | 2387 | entries = bfd_malloc (static_count * sizeof (* ptr)); |
eb13e63f DD |
2388 | |
2389 | ptr = entries; | |
2390 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2391 | elf32_mn10300_list_hash_table_entries, | |
603b7257 | 2392 | & ptr); |
eb13e63f | 2393 | |
603b7257 | 2394 | qsort (entries, static_count, sizeof (entries[0]), sort_by_value); |
eb13e63f | 2395 | |
603b7257 | 2396 | for (i = 0; i < static_count - 1; i++) |
eb13e63f DD |
2397 | if (entries[i]->value && entries[i]->value == entries[i+1]->value) |
2398 | { | |
2399 | int v = entries[i]->flags; | |
2400 | int j; | |
603b7257 NC |
2401 | |
2402 | for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 2403 | v |= entries[j]->flags; |
603b7257 NC |
2404 | |
2405 | for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 2406 | entries[j]->flags = v; |
603b7257 NC |
2407 | |
2408 | i = j - 1; | |
eb13e63f DD |
2409 | } |
2410 | } | |
2411 | ||
252b5132 RH |
2412 | /* All entries in the hash table are fully initialized. */ |
2413 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
2414 | ||
2415 | /* Now that everything has been initialized, go through each | |
2416 | code section and delete any prologue insns which will be | |
2417 | redundant because their operations will be performed by | |
2418 | a "call" instruction. */ | |
2419 | for (input_bfd = link_info->input_bfds; | |
2420 | input_bfd != NULL; | |
2421 | input_bfd = input_bfd->link_next) | |
2422 | { | |
9ad5cbcf | 2423 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 2424 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 2425 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2426 | { |
6cdc0ccc AM |
2427 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2428 | if (isymbuf == NULL) | |
2429 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2430 | symtab_hdr->sh_info, 0, | |
2431 | NULL, NULL, NULL); | |
2432 | if (isymbuf == NULL) | |
9ad5cbcf | 2433 | goto error_return; |
010ac81f | 2434 | } |
252b5132 RH |
2435 | |
2436 | /* Walk over each section in this bfd. */ | |
2437 | for (section = input_bfd->sections; | |
2438 | section != NULL; | |
2439 | section = section->next) | |
2440 | { | |
9ad5cbcf | 2441 | unsigned int sec_shndx; |
6cdc0ccc AM |
2442 | Elf_Internal_Sym *isym, *isymend; |
2443 | struct elf_link_hash_entry **hashes; | |
2444 | struct elf_link_hash_entry **end_hashes; | |
2445 | unsigned int symcount; | |
252b5132 RH |
2446 | |
2447 | /* Skip non-code sections and empty sections. */ | |
eea6121a | 2448 | if ((section->flags & SEC_CODE) == 0 || section->size == 0) |
252b5132 RH |
2449 | continue; |
2450 | ||
2451 | if (section->reloc_count != 0) | |
2452 | { | |
010ac81f | 2453 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2454 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2455 | NULL, NULL, | |
2456 | link_info->keep_memory); | |
010ac81f KH |
2457 | if (internal_relocs == NULL) |
2458 | goto error_return; | |
252b5132 RH |
2459 | } |
2460 | ||
2461 | /* Get cached copy of section contents if it exists. */ | |
2462 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2463 | contents = elf_section_data (section)->this_hdr.contents; | |
2464 | else | |
2465 | { | |
2466 | /* Go get them off disk. */ | |
eea6121a AM |
2467 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2468 | &contents)) | |
252b5132 RH |
2469 | goto error_return; |
2470 | } | |
2471 | ||
9ad5cbcf AM |
2472 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2473 | section); | |
252b5132 RH |
2474 | |
2475 | /* Now look for any function in this section which needs | |
2476 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
2477 | isymend = isymbuf + symtab_hdr->sh_info; |
2478 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2479 | { |
252b5132 | 2480 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 2481 | asection *sym_sec = NULL; |
252b5132 | 2482 | const char *sym_name; |
252b5132 | 2483 | char *new_name; |
dc810e39 AM |
2484 | struct elf_link_hash_table *elftab; |
2485 | bfd_size_type amt; | |
252b5132 | 2486 | |
6cdc0ccc | 2487 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
2488 | continue; |
2489 | ||
6cdc0ccc | 2490 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2491 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2492 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2493 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2494 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2495 | sym_sec = bfd_com_section_ptr; |
86033394 | 2496 | else |
9ad5cbcf | 2497 | sym_sec |
6cdc0ccc | 2498 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 2499 | |
9ad5cbcf AM |
2500 | sym_name |
2501 | = bfd_elf_string_from_elf_section (input_bfd, | |
2502 | symtab_hdr->sh_link, | |
6cdc0ccc | 2503 | isym->st_name); |
252b5132 RH |
2504 | |
2505 | /* Tack on an ID so we can uniquely identify this | |
2506 | local symbol in the global hash table. */ | |
dc810e39 AM |
2507 | amt = strlen (sym_name) + 10; |
2508 | new_name = bfd_malloc (amt); | |
bfff1642 | 2509 | if (new_name == NULL) |
252b5132 | 2510 | goto error_return; |
f60ca5e3 | 2511 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2512 | sym_name = new_name; |
2513 | ||
603b7257 NC |
2514 | elftab = & hash_table->static_hash_table->root; |
2515 | sym_hash = (struct elf32_mn10300_link_hash_entry *) | |
2516 | elf_link_hash_lookup (elftab, sym_name, | |
2517 | FALSE, FALSE, FALSE); | |
252b5132 RH |
2518 | |
2519 | free (new_name); | |
2520 | if (sym_hash == NULL) | |
2521 | continue; | |
2522 | ||
9ad5cbcf AM |
2523 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
2524 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2525 | { |
2526 | int bytes = 0; | |
2527 | ||
2528 | /* Note that we've changed things. */ | |
2529 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2530 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2531 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2532 | |
2533 | /* Count how many bytes we're going to delete. */ | |
2534 | if (sym_hash->movm_args) | |
2535 | bytes += 2; | |
2536 | ||
1a101a42 AM |
2537 | if (sym_hash->stack_size > 0) |
2538 | { | |
2539 | if (sym_hash->stack_size <= 128) | |
2540 | bytes += 3; | |
2541 | else | |
2542 | bytes += 4; | |
2543 | } | |
252b5132 RH |
2544 | |
2545 | /* Note that we've deleted prologue bytes for this | |
2546 | function. */ | |
2547 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2548 | ||
2549 | /* Actually delete the bytes. */ | |
2550 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
2551 | section, | |
6cdc0ccc | 2552 | isym->st_value, |
252b5132 RH |
2553 | bytes)) |
2554 | goto error_return; | |
2555 | ||
2556 | /* Something changed. Not strictly necessary, but | |
2557 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2558 | *again = TRUE; |
252b5132 RH |
2559 | } |
2560 | } | |
2561 | ||
2562 | /* Look for any global functions in this section which | |
2563 | need insns deleted from their prologues. */ | |
6cdc0ccc | 2564 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 2565 | - symtab_hdr->sh_info); |
709e685d | 2566 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2567 | end_hashes = hashes + symcount; |
2568 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2569 | { |
252b5132 RH |
2570 | struct elf32_mn10300_link_hash_entry *sym_hash; |
2571 | ||
6cdc0ccc | 2572 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2573 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
2574 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
2575 | && sym_hash->root.root.u.def.section == section | |
2576 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
2577 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2578 | { |
2579 | int bytes = 0; | |
9ad5cbcf | 2580 | bfd_vma symval; |
252b5132 RH |
2581 | |
2582 | /* Note that we've changed things. */ | |
2583 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2584 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2585 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2586 | |
2587 | /* Count how many bytes we're going to delete. */ | |
2588 | if (sym_hash->movm_args) | |
2589 | bytes += 2; | |
2590 | ||
1a101a42 AM |
2591 | if (sym_hash->stack_size > 0) |
2592 | { | |
2593 | if (sym_hash->stack_size <= 128) | |
2594 | bytes += 3; | |
2595 | else | |
2596 | bytes += 4; | |
2597 | } | |
252b5132 RH |
2598 | |
2599 | /* Note that we've deleted prologue bytes for this | |
2600 | function. */ | |
2601 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2602 | ||
2603 | /* Actually delete the bytes. */ | |
9ad5cbcf | 2604 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
2605 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
2606 | section, | |
9ad5cbcf | 2607 | symval, |
252b5132 RH |
2608 | bytes)) |
2609 | goto error_return; | |
2610 | ||
2611 | /* Something changed. Not strictly necessary, but | |
2612 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2613 | *again = TRUE; |
252b5132 RH |
2614 | } |
2615 | } | |
2616 | ||
2617 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2618 | if (internal_relocs != NULL |
2619 | && elf_section_data (section)->relocs != internal_relocs) | |
2620 | free (internal_relocs); | |
2621 | internal_relocs = NULL; | |
252b5132 RH |
2622 | |
2623 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2624 | if (contents != NULL |
2625 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2626 | { |
2627 | if (! link_info->keep_memory) | |
6cdc0ccc | 2628 | free (contents); |
252b5132 | 2629 | else |
603b7257 NC |
2630 | /* Cache the section contents for elf_link_input_bfd. */ |
2631 | elf_section_data (section)->this_hdr.contents = contents; | |
252b5132 | 2632 | } |
6cdc0ccc | 2633 | contents = NULL; |
9ad5cbcf AM |
2634 | } |
2635 | ||
252b5132 | 2636 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2637 | if (isymbuf != NULL |
2638 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2639 | { |
2640 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
2641 | free (isymbuf); |
2642 | else | |
603b7257 NC |
2643 | /* Cache the symbols for elf_link_input_bfd. */ |
2644 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 2645 | } |
6cdc0ccc | 2646 | isymbuf = NULL; |
252b5132 RH |
2647 | } |
2648 | } | |
2649 | ||
252b5132 RH |
2650 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
2651 | contents = NULL; | |
252b5132 | 2652 | internal_relocs = NULL; |
6cdc0ccc AM |
2653 | isymbuf = NULL; |
2654 | /* For error_return. */ | |
2655 | section = sec; | |
252b5132 | 2656 | |
1049f94e | 2657 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
2658 | this section does not have relocs, or if this is not a |
2659 | code section. */ | |
1049f94e | 2660 | if (link_info->relocatable |
252b5132 RH |
2661 | || (sec->flags & SEC_RELOC) == 0 |
2662 | || sec->reloc_count == 0 | |
2663 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 2664 | return TRUE; |
252b5132 | 2665 | |
252b5132 RH |
2666 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2667 | ||
2668 | /* Get a copy of the native relocations. */ | |
603b7257 NC |
2669 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
2670 | link_info->keep_memory); | |
252b5132 RH |
2671 | if (internal_relocs == NULL) |
2672 | goto error_return; | |
252b5132 | 2673 | |
fc91707c NC |
2674 | /* Scan for worst case alignment gap changes. Note that this logic |
2675 | is not ideal; what we should do is run this scan for every | |
2676 | opcode/address range and adjust accordingly, but that's | |
2677 | expensive. Worst case is that for an alignment of N bytes, we | |
2678 | move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc | |
2679 | all before it. Plus, this still doesn't cover cross-section | |
2680 | jumps with section alignment. */ | |
2681 | irelend = internal_relocs + sec->reloc_count; | |
2682 | align_gap_adjustment = 0; | |
2683 | for (irel = internal_relocs; irel < irelend; irel++) | |
2684 | { | |
2685 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN) | |
2686 | { | |
2687 | bfd_vma adj = 1 << irel->r_addend; | |
2688 | bfd_vma aend = irel->r_offset; | |
2689 | ||
2690 | aend = BFD_ALIGN (aend, 1 << irel->r_addend); | |
e23f1610 | 2691 | adj = 2 * adj - adj - 1; |
fc91707c NC |
2692 | |
2693 | /* Record the biggest adjustmnet. Skip any alignment at the | |
2694 | end of our section. */ | |
2695 | if (align_gap_adjustment < adj | |
2696 | && aend < sec->output_section->vma + sec->output_offset + sec->size) | |
2697 | align_gap_adjustment = adj; | |
2698 | } | |
2699 | } | |
2700 | ||
252b5132 RH |
2701 | /* Walk through them looking for relaxing opportunities. */ |
2702 | irelend = internal_relocs + sec->reloc_count; | |
2703 | for (irel = internal_relocs; irel < irelend; irel++) | |
2704 | { | |
2705 | bfd_vma symval; | |
605d18d4 DD |
2706 | bfd_signed_vma jump_offset; |
2707 | asection *sym_sec = NULL; | |
252b5132 RH |
2708 | struct elf32_mn10300_link_hash_entry *h = NULL; |
2709 | ||
2710 | /* If this isn't something that can be relaxed, then ignore | |
2711 | this reloc. */ | |
2712 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
2713 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
2714 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
2715 | continue; | |
2716 | ||
2717 | /* Get the section contents if we haven't done so already. */ | |
2718 | if (contents == NULL) | |
2719 | { | |
2720 | /* Get cached copy if it exists. */ | |
2721 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2722 | contents = elf_section_data (sec)->this_hdr.contents; | |
2723 | else | |
2724 | { | |
2725 | /* Go get them off disk. */ | |
eea6121a | 2726 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2727 | goto error_return; |
2728 | } | |
2729 | } | |
2730 | ||
b34976b6 | 2731 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 2732 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 2733 | { |
6cdc0ccc AM |
2734 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2735 | if (isymbuf == NULL) | |
2736 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2737 | symtab_hdr->sh_info, 0, | |
2738 | NULL, NULL, NULL); | |
2739 | if (isymbuf == NULL) | |
2740 | goto error_return; | |
252b5132 RH |
2741 | } |
2742 | ||
2743 | /* Get the value of the symbol referred to by the reloc. */ | |
2744 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2745 | { | |
6cdc0ccc | 2746 | Elf_Internal_Sym *isym; |
252b5132 RH |
2747 | const char *sym_name; |
2748 | char *new_name; | |
2749 | ||
2750 | /* A local symbol. */ | |
6cdc0ccc AM |
2751 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2752 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2753 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2754 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2755 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2756 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2757 | sym_sec = bfd_com_section_ptr; |
86033394 | 2758 | else |
6cdc0ccc | 2759 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 2760 | |
252b5132 RH |
2761 | sym_name = bfd_elf_string_from_elf_section (abfd, |
2762 | symtab_hdr->sh_link, | |
6cdc0ccc | 2763 | isym->st_name); |
252b5132 | 2764 | |
dd90f1b2 | 2765 | if ((sym_sec->flags & SEC_MERGE) |
dd90f1b2 DD |
2766 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
2767 | { | |
2709f570 NC |
2768 | symval = isym->st_value; |
2769 | ||
2770 | /* GAS may reduce relocations against symbols in SEC_MERGE | |
2771 | sections to a relocation against the section symbol when | |
2772 | the original addend was zero. When the reloc is against | |
2773 | a section symbol we should include the addend in the | |
2774 | offset passed to _bfd_merged_section_offset, since the | |
2775 | location of interest is the original symbol. On the | |
2776 | other hand, an access to "sym+addend" where "sym" is not | |
2777 | a section symbol should not include the addend; Such an | |
2778 | access is presumed to be an offset from "sym"; The | |
2779 | location of interest is just "sym". */ | |
2780 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
2781 | symval += irel->r_addend; | |
2782 | ||
281153f3 NC |
2783 | symval = _bfd_merged_section_offset (abfd, & sym_sec, |
2784 | elf_section_data (sym_sec)->sec_info, | |
2785 | symval); | |
2709f570 NC |
2786 | |
2787 | if (ELF_ST_TYPE (isym->st_info) != STT_SECTION) | |
2788 | symval += irel->r_addend; | |
2789 | ||
2790 | symval += sym_sec->output_section->vma | |
2791 | + sym_sec->output_offset - irel->r_addend; | |
dd90f1b2 DD |
2792 | } |
2793 | else | |
bfff1642 NC |
2794 | symval = (isym->st_value |
2795 | + sym_sec->output_section->vma | |
2796 | + sym_sec->output_offset); | |
603b7257 | 2797 | |
252b5132 RH |
2798 | /* Tack on an ID so we can uniquely identify this |
2799 | local symbol in the global hash table. */ | |
dc810e39 | 2800 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
bfff1642 | 2801 | if (new_name == NULL) |
252b5132 | 2802 | goto error_return; |
f60ca5e3 | 2803 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2804 | sym_name = new_name; |
2805 | ||
2806 | h = (struct elf32_mn10300_link_hash_entry *) | |
2807 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 2808 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
2809 | free (new_name); |
2810 | } | |
2811 | else | |
2812 | { | |
2813 | unsigned long indx; | |
2814 | ||
2815 | /* An external symbol. */ | |
2816 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2817 | h = (struct elf32_mn10300_link_hash_entry *) | |
2818 | (elf_sym_hashes (abfd)[indx]); | |
2819 | BFD_ASSERT (h != NULL); | |
2820 | if (h->root.root.type != bfd_link_hash_defined | |
2821 | && h->root.root.type != bfd_link_hash_defweak) | |
603b7257 NC |
2822 | /* This appears to be a reference to an undefined |
2823 | symbol. Just ignore it--it will be caught by the | |
2824 | regular reloc processing. */ | |
2825 | continue; | |
252b5132 | 2826 | |
bfff1642 NC |
2827 | /* Check for a reference to a discarded symbol and ignore it. */ |
2828 | if (h->root.root.u.def.section->output_section == NULL) | |
2829 | continue; | |
2830 | ||
605d18d4 DD |
2831 | sym_sec = h->root.root.u.def.section->output_section; |
2832 | ||
252b5132 RH |
2833 | symval = (h->root.root.u.def.value |
2834 | + h->root.root.u.def.section->output_section->vma | |
2835 | + h->root.root.u.def.section->output_offset); | |
2836 | } | |
2837 | ||
2838 | /* For simplicity of coding, we are going to modify the section | |
2839 | contents, the section relocs, and the BFD symbol table. We | |
2840 | must tell the rest of the code not to free up this | |
2841 | information. It would be possible to instead create a table | |
2842 | of changes which have to be made, as is done in coff-mips.c; | |
2843 | that would be more work, but would require less memory when | |
2844 | the linker is run. */ | |
2845 | ||
2846 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
2847 | branch/call, also deal with "call" -> "calls" conversions and | |
2848 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
2849 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
2850 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
2851 | { |
2852 | bfd_vma value = symval; | |
2853 | ||
03a12831 AO |
2854 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
2855 | && h != NULL | |
2856 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2857 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2858 | && h->root.plt.offset != (bfd_vma) -1) | |
2859 | { | |
2860 | asection * splt; | |
2861 | ||
2862 | splt = bfd_get_section_by_name (elf_hash_table (link_info) | |
2863 | ->dynobj, ".plt"); | |
3b36f7e6 | 2864 | |
03a12831 AO |
2865 | value = ((splt->output_section->vma |
2866 | + splt->output_offset | |
2867 | + h->root.plt.offset) | |
2868 | - (sec->output_section->vma | |
2869 | + sec->output_offset | |
2870 | + irel->r_offset)); | |
2871 | } | |
2872 | ||
252b5132 RH |
2873 | /* If we've got a "call" instruction that needs to be turned |
2874 | into a "calls" instruction, do so now. It saves a byte. */ | |
2875 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2876 | { | |
2877 | unsigned char code; | |
2878 | ||
2879 | /* Get the opcode. */ | |
2880 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2881 | ||
2882 | /* Make sure we're working with a "call" instruction! */ | |
2883 | if (code == 0xdd) | |
2884 | { | |
2885 | /* Note that we've changed the relocs, section contents, | |
2886 | etc. */ | |
2887 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2888 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2889 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2890 | |
2891 | /* Fix the opcode. */ | |
2892 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
2893 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2894 | ||
2895 | /* Fix irel->r_offset and irel->r_addend. */ | |
2896 | irel->r_offset += 1; | |
2897 | irel->r_addend += 1; | |
2898 | ||
2899 | /* Delete one byte of data. */ | |
2900 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2901 | irel->r_offset + 3, 1)) | |
2902 | goto error_return; | |
2903 | ||
2904 | /* That will change things, so, we should relax again. | |
2905 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2906 | *again = TRUE; |
252b5132 RH |
2907 | } |
2908 | } | |
2909 | else if (h) | |
2910 | { | |
2911 | /* We've got a "call" instruction which needs some data | |
2912 | from target function filled in. */ | |
2913 | unsigned char code; | |
2914 | ||
2915 | /* Get the opcode. */ | |
2916 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2917 | ||
2918 | /* Insert data from the target function into the "call" | |
2919 | instruction if needed. */ | |
2920 | if (code == 0xdd) | |
2921 | { | |
2922 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
2923 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2924 | contents + irel->r_offset + 5); | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | /* Deal with pc-relative gunk. */ | |
2929 | value -= (sec->output_section->vma + sec->output_offset); | |
2930 | value -= irel->r_offset; | |
2931 | value += irel->r_addend; | |
2932 | ||
2933 | /* See if the value will fit in 16 bits, note the high value is | |
2934 | 0x7fff + 2 as the target will be two bytes closer if we are | |
605d18d4 DD |
2935 | able to relax, if it's in the same section. */ |
2936 | if (sec->output_section == sym_sec->output_section) | |
2937 | jump_offset = 0x8001; | |
2938 | else | |
2939 | jump_offset = 0x7fff; | |
2940 | ||
fc91707c NC |
2941 | /* Account for jumps across alignment boundaries using |
2942 | align_gap_adjustment. */ | |
605d18d4 | 2943 | if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment |
fc91707c | 2944 | && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment)) |
252b5132 RH |
2945 | { |
2946 | unsigned char code; | |
2947 | ||
2948 | /* Get the opcode. */ | |
2949 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2950 | ||
2951 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
2952 | continue; | |
2953 | ||
2954 | /* Note that we've changed the relocs, section contents, etc. */ | |
2955 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2956 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2957 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2958 | |
2959 | /* Fix the opcode. */ | |
2960 | if (code == 0xdc) | |
2961 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
2962 | else if (code == 0xdd) | |
2963 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
2964 | else if (code == 0xff) | |
2965 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2966 | ||
2967 | /* Fix the relocation's type. */ | |
2968 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2969 | (ELF32_R_TYPE (irel->r_info) |
2970 | == (int) R_MN10300_PLT32) | |
2971 | ? R_MN10300_PLT16 : | |
252b5132 RH |
2972 | R_MN10300_PCREL16); |
2973 | ||
2974 | /* Delete two bytes of data. */ | |
2975 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2976 | irel->r_offset + 1, 2)) | |
2977 | goto error_return; | |
2978 | ||
2979 | /* That will change things, so, we should relax again. | |
2980 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2981 | *again = TRUE; |
252b5132 RH |
2982 | } |
2983 | } | |
2984 | ||
2985 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
2986 | branch. */ | |
2987 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
2988 | { | |
2989 | bfd_vma value = symval; | |
2990 | ||
2991 | /* If we've got a "call" instruction that needs to be turned | |
2992 | into a "calls" instruction, do so now. It saves a byte. */ | |
2993 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2994 | { | |
2995 | unsigned char code; | |
2996 | ||
2997 | /* Get the opcode. */ | |
2998 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2999 | ||
3000 | /* Make sure we're working with a "call" instruction! */ | |
3001 | if (code == 0xcd) | |
3002 | { | |
3003 | /* Note that we've changed the relocs, section contents, | |
3004 | etc. */ | |
3005 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3006 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3007 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3008 | |
3009 | /* Fix the opcode. */ | |
3010 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
3011 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
3012 | ||
3013 | /* Fix irel->r_offset and irel->r_addend. */ | |
3014 | irel->r_offset += 1; | |
3015 | irel->r_addend += 1; | |
3016 | ||
3017 | /* Delete one byte of data. */ | |
3018 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3019 | irel->r_offset + 1, 1)) | |
3020 | goto error_return; | |
3021 | ||
3022 | /* That will change things, so, we should relax again. | |
3023 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3024 | *again = TRUE; |
252b5132 RH |
3025 | } |
3026 | } | |
3027 | else if (h) | |
3028 | { | |
3029 | unsigned char code; | |
3030 | ||
3031 | /* Get the opcode. */ | |
3032 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3033 | ||
3034 | /* Insert data from the target function into the "call" | |
3035 | instruction if needed. */ | |
3036 | if (code == 0xcd) | |
3037 | { | |
3038 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
3039 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
3040 | contents + irel->r_offset + 3); | |
3041 | } | |
3042 | } | |
3043 | ||
3044 | /* Deal with pc-relative gunk. */ | |
3045 | value -= (sec->output_section->vma + sec->output_offset); | |
3046 | value -= irel->r_offset; | |
3047 | value += irel->r_addend; | |
3048 | ||
3049 | /* See if the value will fit in 8 bits, note the high value is | |
3050 | 0x7f + 1 as the target will be one bytes closer if we are | |
3051 | able to relax. */ | |
010ac81f | 3052 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
3053 | { |
3054 | unsigned char code; | |
3055 | ||
3056 | /* Get the opcode. */ | |
3057 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3058 | ||
3059 | if (code != 0xcc) | |
3060 | continue; | |
3061 | ||
3062 | /* Note that we've changed the relocs, section contents, etc. */ | |
3063 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3064 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3065 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3066 | |
3067 | /* Fix the opcode. */ | |
3068 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
3069 | ||
3070 | /* Fix the relocation's type. */ | |
3071 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3072 | R_MN10300_PCREL8); | |
3073 | ||
3074 | /* Delete one byte of data. */ | |
3075 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3076 | irel->r_offset + 1, 1)) | |
3077 | goto error_return; | |
3078 | ||
3079 | /* That will change things, so, we should relax again. | |
3080 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3081 | *again = TRUE; |
252b5132 RH |
3082 | } |
3083 | } | |
3084 | ||
3085 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
3086 | which immediately follows a conditional 8 bit pc-relative | |
3087 | branch around the unconditional branch. | |
3088 | ||
3089 | original: new: | |
3090 | bCC lab1 bCC' lab2 | |
3091 | bra lab2 | |
3092 | lab1: lab1: | |
3093 | ||
252b5132 RH |
3094 | This happens when the bCC can't reach lab2 at assembly time, |
3095 | but due to other relaxations it can reach at link time. */ | |
3096 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
3097 | { | |
3098 | Elf_Internal_Rela *nrel; | |
3099 | bfd_vma value = symval; | |
3100 | unsigned char code; | |
3101 | ||
3102 | /* Deal with pc-relative gunk. */ | |
3103 | value -= (sec->output_section->vma + sec->output_offset); | |
3104 | value -= irel->r_offset; | |
3105 | value += irel->r_addend; | |
3106 | ||
3107 | /* Do nothing if this reloc is the last byte in the section. */ | |
eea6121a | 3108 | if (irel->r_offset == sec->size) |
252b5132 RH |
3109 | continue; |
3110 | ||
3111 | /* See if the next instruction is an unconditional pc-relative | |
3112 | branch, more often than not this test will fail, so we | |
3113 | test it first to speed things up. */ | |
3114 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
3115 | if (code != 0xca) | |
3116 | continue; | |
3117 | ||
3118 | /* Also make sure the next relocation applies to the next | |
3119 | instruction and that it's a pc-relative 8 bit branch. */ | |
3120 | nrel = irel + 1; | |
3121 | if (nrel == irelend | |
3122 | || irel->r_offset + 2 != nrel->r_offset | |
3123 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
3124 | continue; | |
3125 | ||
3126 | /* Make sure our destination immediately follows the | |
3127 | unconditional branch. */ | |
3128 | if (symval != (sec->output_section->vma + sec->output_offset | |
3129 | + irel->r_offset + 3)) | |
3130 | continue; | |
3131 | ||
3132 | /* Now make sure we are a conditional branch. This may not | |
3133 | be necessary, but why take the chance. | |
3134 | ||
3135 | Note these checks assume that R_MN10300_PCREL8 relocs | |
3136 | only occur on bCC and bCCx insns. If they occured | |
3137 | elsewhere, we'd need to know the start of this insn | |
3138 | for this check to be accurate. */ | |
3139 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3140 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
3141 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
3142 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
3143 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
3144 | && code != 0xea && code != 0xeb) | |
3145 | continue; | |
3146 | ||
3147 | /* We also have to be sure there is no symbol/label | |
3148 | at the unconditional branch. */ | |
6cdc0ccc AM |
3149 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
3150 | irel->r_offset + 1)) | |
252b5132 RH |
3151 | continue; |
3152 | ||
3153 | /* Note that we've changed the relocs, section contents, etc. */ | |
3154 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3155 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3156 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3157 | |
3158 | /* Reverse the condition of the first branch. */ | |
3159 | switch (code) | |
3160 | { | |
010ac81f KH |
3161 | case 0xc8: |
3162 | code = 0xc9; | |
3163 | break; | |
3164 | case 0xc9: | |
3165 | code = 0xc8; | |
3166 | break; | |
3167 | case 0xc0: | |
3168 | code = 0xc2; | |
3169 | break; | |
3170 | case 0xc2: | |
3171 | code = 0xc0; | |
3172 | break; | |
3173 | case 0xc3: | |
3174 | code = 0xc1; | |
3175 | break; | |
3176 | case 0xc1: | |
3177 | code = 0xc3; | |
3178 | break; | |
3179 | case 0xc4: | |
3180 | code = 0xc6; | |
3181 | break; | |
3182 | case 0xc6: | |
3183 | code = 0xc4; | |
3184 | break; | |
3185 | case 0xc7: | |
3186 | code = 0xc5; | |
3187 | break; | |
3188 | case 0xc5: | |
3189 | code = 0xc7; | |
3190 | break; | |
3191 | case 0xe8: | |
3192 | code = 0xe9; | |
3193 | break; | |
3194 | case 0x9d: | |
3195 | code = 0xe8; | |
3196 | break; | |
3197 | case 0xea: | |
3198 | code = 0xeb; | |
3199 | break; | |
3200 | case 0xeb: | |
3201 | code = 0xea; | |
3202 | break; | |
252b5132 RH |
3203 | } |
3204 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3205 | ||
3206 | /* Set the reloc type and symbol for the first branch | |
3207 | from the second branch. */ | |
3208 | irel->r_info = nrel->r_info; | |
3209 | ||
3210 | /* Make the reloc for the second branch a null reloc. */ | |
3211 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
3212 | R_MN10300_NONE); | |
3213 | ||
3214 | /* Delete two bytes of data. */ | |
3215 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3216 | irel->r_offset + 1, 2)) | |
3217 | goto error_return; | |
3218 | ||
3219 | /* That will change things, so, we should relax again. | |
3220 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3221 | *again = TRUE; |
252b5132 RH |
3222 | } |
3223 | ||
31f8dc8f JL |
3224 | /* Try to turn a 24 immediate, displacement or absolute address |
3225 | into a 8 immediate, displacement or absolute address. */ | |
3226 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
3227 | { | |
3228 | bfd_vma value = symval; | |
3229 | value += irel->r_addend; | |
3230 | ||
3231 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 3232 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
3233 | { |
3234 | unsigned char code; | |
3235 | ||
3236 | /* AM33 insns which have 24 operands are 6 bytes long and | |
3237 | will have 0xfd as the first byte. */ | |
3238 | ||
3239 | /* Get the first opcode. */ | |
3240 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3241 | ||
3242 | if (code == 0xfd) | |
3243 | { | |
010ac81f KH |
3244 | /* Get the second opcode. */ |
3245 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3246 | |
3247 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3248 | equivalent instructions exists. */ | |
3b36f7e6 | 3249 | if (code != 0x6b && code != 0x7b |
31f8dc8f JL |
3250 | && code != 0x8b && code != 0x9b |
3251 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
3252 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3253 | || (code & 0x0f) == 0x0e)) | |
3254 | { | |
3255 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3256 | move the value out of high mem and thus not fit |
3257 | in a signed 8bit value. This is currently over | |
3258 | conservative. */ | |
31f8dc8f JL |
3259 | if ((value & 0x80) == 0) |
3260 | { | |
3261 | /* Note that we've changed the relocation contents, | |
3262 | etc. */ | |
3263 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3264 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3265 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3266 | |
3267 | /* Fix the opcode. */ | |
3268 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
3269 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3270 | ||
3271 | /* Fix the relocation's type. */ | |
010ac81f KH |
3272 | irel->r_info = |
3273 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3274 | R_MN10300_8); | |
31f8dc8f JL |
3275 | |
3276 | /* Delete two bytes of data. */ | |
3277 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3278 | irel->r_offset + 1, 2)) | |
3279 | goto error_return; | |
3280 | ||
3281 | /* That will change things, so, we should relax | |
3282 | again. Note that this is not required, and it | |
010ac81f | 3283 | may be slow. */ |
b34976b6 | 3284 | *again = TRUE; |
31f8dc8f JL |
3285 | break; |
3286 | } | |
3287 | } | |
31f8dc8f JL |
3288 | } |
3289 | } | |
3290 | } | |
252b5132 RH |
3291 | |
3292 | /* Try to turn a 32bit immediate, displacement or absolute address | |
3293 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
3294 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
3295 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
eb13e63f | 3296 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
252b5132 RH |
3297 | { |
3298 | bfd_vma value = symval; | |
03a12831 AO |
3299 | |
3300 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
3301 | { | |
3302 | asection * sgot; | |
3303 | ||
3304 | sgot = bfd_get_section_by_name (elf_hash_table (link_info) | |
3305 | ->dynobj, ".got"); | |
3306 | ||
3307 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) | |
3308 | { | |
3309 | value = sgot->output_offset; | |
3310 | ||
3311 | if (h) | |
3312 | value += h->root.got.offset; | |
3313 | else | |
3314 | value += (elf_local_got_offsets | |
3315 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
3316 | } | |
3317 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
3318 | value -= sgot->output_section->vma; | |
3319 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
3320 | value = (sgot->output_section->vma | |
3321 | - (sec->output_section->vma | |
3322 | + sec->output_offset | |
3323 | + irel->r_offset)); | |
3324 | else | |
3325 | abort (); | |
3326 | } | |
3327 | ||
252b5132 RH |
3328 | value += irel->r_addend; |
3329 | ||
31f8dc8f JL |
3330 | /* See if the value will fit in 24 bits. |
3331 | We allow any 16bit match here. We prune those we can't | |
3332 | handle below. */ | |
010ac81f | 3333 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
3334 | { |
3335 | unsigned char code; | |
3336 | ||
3337 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
3338 | will have 0xfe as the first byte. */ | |
3339 | ||
3340 | /* Get the first opcode. */ | |
3341 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3342 | ||
3343 | if (code == 0xfe) | |
3344 | { | |
3b36f7e6 AM |
3345 | /* Get the second opcode. */ |
3346 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3347 | |
3348 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
3349 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3350 | equivalent instructions exists. */ | |
010ac81f | 3351 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 3352 | && code != 0x8b && code != 0x9b |
03a12831 AO |
3353 | && (ELF32_R_TYPE (irel->r_info) |
3354 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
3355 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3356 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3357 | || (code & 0x0f) == 0x0e)) | |
3358 | { | |
3359 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3360 | move the value out of high mem and thus not fit |
3361 | in a signed 16bit value. This is currently over | |
3362 | conservative. */ | |
31f8dc8f JL |
3363 | if ((value & 0x8000) == 0) |
3364 | { | |
3365 | /* Note that we've changed the relocation contents, | |
3366 | etc. */ | |
3367 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3368 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3369 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3370 | |
3371 | /* Fix the opcode. */ | |
3372 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
3373 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3374 | ||
3375 | /* Fix the relocation's type. */ | |
010ac81f KH |
3376 | irel->r_info = |
3377 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3378 | (ELF32_R_TYPE (irel->r_info) |
3379 | == (int) R_MN10300_GOTOFF32) | |
3380 | ? R_MN10300_GOTOFF24 | |
3381 | : (ELF32_R_TYPE (irel->r_info) | |
3382 | == (int) R_MN10300_GOT32) | |
3383 | ? R_MN10300_GOT24 : | |
010ac81f | 3384 | R_MN10300_24); |
31f8dc8f JL |
3385 | |
3386 | /* Delete one byte of data. */ | |
3387 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3388 | irel->r_offset + 3, 1)) | |
3389 | goto error_return; | |
3390 | ||
3391 | /* That will change things, so, we should relax | |
3392 | again. Note that this is not required, and it | |
010ac81f | 3393 | may be slow. */ |
b34976b6 | 3394 | *again = TRUE; |
31f8dc8f JL |
3395 | break; |
3396 | } | |
3397 | } | |
31f8dc8f JL |
3398 | } |
3399 | } | |
252b5132 RH |
3400 | |
3401 | /* See if the value will fit in 16 bits. | |
3402 | We allow any 16bit match here. We prune those we can't | |
3403 | handle below. */ | |
010ac81f | 3404 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
3405 | { |
3406 | unsigned char code; | |
3407 | ||
3408 | /* Most insns which have 32bit operands are 6 bytes long; | |
3409 | exceptions are pcrel insns and bit insns. | |
3410 | ||
3411 | We handle pcrel insns above. We don't bother trying | |
3412 | to handle the bit insns here. | |
3413 | ||
3414 | The first byte of the remaining insns will be 0xfc. */ | |
3415 | ||
3416 | /* Get the first opcode. */ | |
3417 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
3418 | ||
3419 | if (code != 0xfc) | |
3420 | continue; | |
3421 | ||
3422 | /* Get the second opcode. */ | |
3423 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3424 | ||
3425 | if ((code & 0xf0) < 0x80) | |
3426 | switch (code & 0xf0) | |
3427 | { | |
3428 | /* mov (d32,am),dn -> mov (d32,am),dn | |
3429 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3430 | mov (d32,am),an -> mov (d32,am),an | |
3431 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3432 | movbu (d32,am),dn -> movbu (d32,am),dn | |
3433 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
3434 | movhu (d32,am),dn -> movhu (d32,am),dn | |
3435 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
3436 | case 0x00: | |
3437 | case 0x10: | |
3438 | case 0x20: | |
3439 | case 0x30: | |
3440 | case 0x40: | |
3441 | case 0x50: | |
3442 | case 0x60: | |
3443 | case 0x70: | |
3444 | /* Not safe if the high bit is on as relaxing may | |
3445 | move the value out of high mem and thus not fit | |
3446 | in a signed 16bit value. */ | |
3447 | if (code == 0xcc | |
3448 | && (value & 0x8000)) | |
3449 | continue; | |
3450 | ||
3451 | /* Note that we've changed the relocation contents, etc. */ | |
3452 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3453 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3454 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3455 | |
3456 | /* Fix the opcode. */ | |
3457 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3458 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3459 | ||
3460 | /* Fix the relocation's type. */ | |
3461 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3462 | (ELF32_R_TYPE (irel->r_info) |
3463 | == (int) R_MN10300_GOTOFF32) | |
3464 | ? R_MN10300_GOTOFF16 | |
3465 | : (ELF32_R_TYPE (irel->r_info) | |
3466 | == (int) R_MN10300_GOT32) | |
3467 | ? R_MN10300_GOT16 | |
3468 | : (ELF32_R_TYPE (irel->r_info) | |
3469 | == (int) R_MN10300_GOTPC32) | |
3470 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3471 | R_MN10300_16); |
3472 | ||
3473 | /* Delete two bytes of data. */ | |
3474 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3475 | irel->r_offset + 2, 2)) | |
3476 | goto error_return; | |
3477 | ||
3478 | /* That will change things, so, we should relax again. | |
3479 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3480 | *again = TRUE; |
252b5132 RH |
3481 | break; |
3482 | } | |
3483 | else if ((code & 0xf0) == 0x80 | |
3484 | || (code & 0xf0) == 0x90) | |
3485 | switch (code & 0xf3) | |
3486 | { | |
3487 | /* mov dn,(abs32) -> mov dn,(abs16) | |
3488 | movbu dn,(abs32) -> movbu dn,(abs16) | |
3489 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
3490 | case 0x81: | |
3491 | case 0x82: | |
3492 | case 0x83: | |
3493 | /* Note that we've changed the relocation contents, etc. */ | |
3494 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3495 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3496 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3497 | |
3498 | if ((code & 0xf3) == 0x81) | |
3499 | code = 0x01 + (code & 0x0c); | |
3500 | else if ((code & 0xf3) == 0x82) | |
3501 | code = 0x02 + (code & 0x0c); | |
3502 | else if ((code & 0xf3) == 0x83) | |
3503 | code = 0x03 + (code & 0x0c); | |
3504 | else | |
3505 | abort (); | |
3506 | ||
3507 | /* Fix the opcode. */ | |
3508 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3509 | ||
3510 | /* Fix the relocation's type. */ | |
3511 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3512 | (ELF32_R_TYPE (irel->r_info) |
3513 | == (int) R_MN10300_GOTOFF32) | |
3514 | ? R_MN10300_GOTOFF16 | |
3515 | : (ELF32_R_TYPE (irel->r_info) | |
3516 | == (int) R_MN10300_GOT32) | |
3517 | ? R_MN10300_GOT16 | |
3518 | : (ELF32_R_TYPE (irel->r_info) | |
3519 | == (int) R_MN10300_GOTPC32) | |
3520 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3521 | R_MN10300_16); |
3522 | ||
3523 | /* The opcode got shorter too, so we have to fix the | |
3524 | addend and offset too! */ | |
3525 | irel->r_offset -= 1; | |
3526 | ||
3527 | /* Delete three bytes of data. */ | |
3528 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3529 | irel->r_offset + 1, 3)) | |
3530 | goto error_return; | |
3531 | ||
3532 | /* That will change things, so, we should relax again. | |
3533 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3534 | *again = TRUE; |
252b5132 RH |
3535 | break; |
3536 | ||
3537 | /* mov am,(abs32) -> mov am,(abs16) | |
3538 | mov am,(d32,sp) -> mov am,(d16,sp) | |
3539 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
3540 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
3541 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
3542 | case 0x80: | |
3543 | case 0x90: | |
3544 | case 0x91: | |
3545 | case 0x92: | |
3546 | case 0x93: | |
2a0fa943 AO |
3547 | /* sp-based offsets are zero-extended. */ |
3548 | if (code >= 0x90 && code <= 0x93 | |
bfff1642 | 3549 | && (long) value < 0) |
2a0fa943 AO |
3550 | continue; |
3551 | ||
252b5132 RH |
3552 | /* Note that we've changed the relocation contents, etc. */ |
3553 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3554 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3555 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3556 | |
3557 | /* Fix the opcode. */ | |
3558 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3559 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3560 | ||
3561 | /* Fix the relocation's type. */ | |
3562 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3563 | (ELF32_R_TYPE (irel->r_info) |
3564 | == (int) R_MN10300_GOTOFF32) | |
3565 | ? R_MN10300_GOTOFF16 | |
3566 | : (ELF32_R_TYPE (irel->r_info) | |
3567 | == (int) R_MN10300_GOT32) | |
3568 | ? R_MN10300_GOT16 | |
3569 | : (ELF32_R_TYPE (irel->r_info) | |
3570 | == (int) R_MN10300_GOTPC32) | |
3571 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3572 | R_MN10300_16); |
3573 | ||
3574 | /* Delete two bytes of data. */ | |
3575 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3576 | irel->r_offset + 2, 2)) | |
3577 | goto error_return; | |
3578 | ||
3579 | /* That will change things, so, we should relax again. | |
3580 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3581 | *again = TRUE; |
252b5132 RH |
3582 | break; |
3583 | } | |
3584 | else if ((code & 0xf0) < 0xf0) | |
3585 | switch (code & 0xfc) | |
3586 | { | |
3587 | /* mov imm32,dn -> mov imm16,dn | |
3588 | mov imm32,an -> mov imm16,an | |
3589 | mov (abs32),dn -> mov (abs16),dn | |
3590 | movbu (abs32),dn -> movbu (abs16),dn | |
3591 | movhu (abs32),dn -> movhu (abs16),dn */ | |
3592 | case 0xcc: | |
3593 | case 0xdc: | |
3594 | case 0xa4: | |
3595 | case 0xa8: | |
3596 | case 0xac: | |
3597 | /* Not safe if the high bit is on as relaxing may | |
3598 | move the value out of high mem and thus not fit | |
3599 | in a signed 16bit value. */ | |
3600 | if (code == 0xcc | |
3601 | && (value & 0x8000)) | |
3602 | continue; | |
3603 | ||
2a0fa943 AO |
3604 | /* mov imm16, an zero-extends the immediate. */ |
3605 | if (code == 0xdc | |
bfff1642 | 3606 | && (long) value < 0) |
2a0fa943 AO |
3607 | continue; |
3608 | ||
252b5132 RH |
3609 | /* Note that we've changed the relocation contents, etc. */ |
3610 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3611 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3612 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3613 | |
3614 | if ((code & 0xfc) == 0xcc) | |
3615 | code = 0x2c + (code & 0x03); | |
3616 | else if ((code & 0xfc) == 0xdc) | |
3617 | code = 0x24 + (code & 0x03); | |
3618 | else if ((code & 0xfc) == 0xa4) | |
3619 | code = 0x30 + (code & 0x03); | |
3620 | else if ((code & 0xfc) == 0xa8) | |
3621 | code = 0x34 + (code & 0x03); | |
3622 | else if ((code & 0xfc) == 0xac) | |
3623 | code = 0x38 + (code & 0x03); | |
3624 | else | |
3625 | abort (); | |
3626 | ||
3627 | /* Fix the opcode. */ | |
3628 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3629 | ||
3630 | /* Fix the relocation's type. */ | |
3631 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3632 | (ELF32_R_TYPE (irel->r_info) |
3633 | == (int) R_MN10300_GOTOFF32) | |
3634 | ? R_MN10300_GOTOFF16 | |
3635 | : (ELF32_R_TYPE (irel->r_info) | |
3636 | == (int) R_MN10300_GOT32) | |
3637 | ? R_MN10300_GOT16 | |
3638 | : (ELF32_R_TYPE (irel->r_info) | |
3639 | == (int) R_MN10300_GOTPC32) | |
3640 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3641 | R_MN10300_16); |
3642 | ||
3643 | /* The opcode got shorter too, so we have to fix the | |
3644 | addend and offset too! */ | |
3645 | irel->r_offset -= 1; | |
3646 | ||
3647 | /* Delete three bytes of data. */ | |
3648 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3649 | irel->r_offset + 1, 3)) | |
3650 | goto error_return; | |
3651 | ||
3652 | /* That will change things, so, we should relax again. | |
3653 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3654 | *again = TRUE; |
252b5132 RH |
3655 | break; |
3656 | ||
3657 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
3658 | mov (d32,sp),an -> mov (d16,sp),an |
3659 | mov (d32,sp),dn -> mov (d16,sp),dn | |
3660 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
3661 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
3662 | add imm32,dn -> add imm16,dn |
3663 | cmp imm32,dn -> cmp imm16,dn | |
3664 | add imm32,an -> add imm16,an | |
3665 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
3666 | and imm32,dn -> and imm16,dn |
3667 | or imm32,dn -> or imm16,dn | |
3668 | xor imm32,dn -> xor imm16,dn | |
3669 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
3670 | |
3671 | case 0xa0: | |
3672 | case 0xb0: | |
3673 | case 0xb1: | |
3674 | case 0xb2: | |
3675 | case 0xb3: | |
3676 | case 0xc0: | |
3677 | case 0xc8: | |
3678 | ||
3679 | case 0xd0: | |
3680 | case 0xd8: | |
3681 | case 0xe0: | |
3682 | case 0xe1: | |
3683 | case 0xe2: | |
3684 | case 0xe3: | |
2a0fa943 AO |
3685 | /* cmp imm16, an zero-extends the immediate. */ |
3686 | if (code == 0xdc | |
bfff1642 | 3687 | && (long) value < 0) |
2a0fa943 AO |
3688 | continue; |
3689 | ||
3690 | /* So do sp-based offsets. */ | |
3691 | if (code >= 0xb0 && code <= 0xb3 | |
bfff1642 | 3692 | && (long) value < 0) |
2a0fa943 AO |
3693 | continue; |
3694 | ||
252b5132 RH |
3695 | /* Note that we've changed the relocation contents, etc. */ |
3696 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3697 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3698 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3699 | |
3700 | /* Fix the opcode. */ | |
3701 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3702 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3703 | ||
3704 | /* Fix the relocation's type. */ | |
3705 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3706 | (ELF32_R_TYPE (irel->r_info) |
3707 | == (int) R_MN10300_GOTOFF32) | |
3708 | ? R_MN10300_GOTOFF16 | |
3709 | : (ELF32_R_TYPE (irel->r_info) | |
3710 | == (int) R_MN10300_GOT32) | |
3711 | ? R_MN10300_GOT16 | |
3712 | : (ELF32_R_TYPE (irel->r_info) | |
3713 | == (int) R_MN10300_GOTPC32) | |
3714 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3715 | R_MN10300_16); |
3716 | ||
3717 | /* Delete two bytes of data. */ | |
3718 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3719 | irel->r_offset + 2, 2)) | |
3720 | goto error_return; | |
3721 | ||
3722 | /* That will change things, so, we should relax again. | |
3723 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3724 | *again = TRUE; |
252b5132 RH |
3725 | break; |
3726 | } | |
3727 | else if (code == 0xfe) | |
3728 | { | |
3729 | /* add imm32,sp -> add imm16,sp */ | |
3730 | ||
3731 | /* Note that we've changed the relocation contents, etc. */ | |
3732 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3733 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3734 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3735 | |
3736 | /* Fix the opcode. */ | |
3737 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3738 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
3739 | ||
3740 | /* Fix the relocation's type. */ | |
3741 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3742 | (ELF32_R_TYPE (irel->r_info) |
3743 | == (int) R_MN10300_GOT32) | |
3744 | ? R_MN10300_GOT16 | |
3745 | : (ELF32_R_TYPE (irel->r_info) | |
3746 | == (int) R_MN10300_GOTOFF32) | |
3747 | ? R_MN10300_GOTOFF16 | |
3748 | : (ELF32_R_TYPE (irel->r_info) | |
3749 | == (int) R_MN10300_GOTPC32) | |
3750 | ? R_MN10300_GOTPC16 : | |
010ac81f | 3751 | R_MN10300_16); |
252b5132 RH |
3752 | |
3753 | /* Delete two bytes of data. */ | |
3754 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3755 | irel->r_offset + 2, 2)) | |
3756 | goto error_return; | |
3757 | ||
3758 | /* That will change things, so, we should relax again. | |
3759 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3760 | *again = TRUE; |
252b5132 RH |
3761 | break; |
3762 | } | |
3763 | } | |
3764 | } | |
3765 | } | |
3766 | ||
6cdc0ccc AM |
3767 | if (isymbuf != NULL |
3768 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3769 | { |
3770 | if (! link_info->keep_memory) | |
6cdc0ccc | 3771 | free (isymbuf); |
252b5132 RH |
3772 | else |
3773 | { | |
6cdc0ccc AM |
3774 | /* Cache the symbols for elf_link_input_bfd. */ |
3775 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3776 | } |
9ad5cbcf AM |
3777 | } |
3778 | ||
6cdc0ccc AM |
3779 | if (contents != NULL |
3780 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
3781 | { |
3782 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3783 | free (contents); |
3784 | else | |
252b5132 | 3785 | { |
6cdc0ccc AM |
3786 | /* Cache the section contents for elf_link_input_bfd. */ |
3787 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 3788 | } |
252b5132 RH |
3789 | } |
3790 | ||
6cdc0ccc AM |
3791 | if (internal_relocs != NULL |
3792 | && elf_section_data (sec)->relocs != internal_relocs) | |
3793 | free (internal_relocs); | |
3794 | ||
b34976b6 | 3795 | return TRUE; |
252b5132 RH |
3796 | |
3797 | error_return: | |
6cdc0ccc AM |
3798 | if (isymbuf != NULL |
3799 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3800 | free (isymbuf); | |
3801 | if (contents != NULL | |
3802 | && elf_section_data (section)->this_hdr.contents != contents) | |
3803 | free (contents); | |
3804 | if (internal_relocs != NULL | |
3805 | && elf_section_data (section)->relocs != internal_relocs) | |
3806 | free (internal_relocs); | |
9ad5cbcf | 3807 | |
b34976b6 | 3808 | return FALSE; |
252b5132 RH |
3809 | } |
3810 | ||
252b5132 RH |
3811 | /* This is a version of bfd_generic_get_relocated_section_contents |
3812 | which uses mn10300_elf_relocate_section. */ | |
3813 | ||
3814 | static bfd_byte * | |
603b7257 NC |
3815 | mn10300_elf_get_relocated_section_contents (bfd *output_bfd, |
3816 | struct bfd_link_info *link_info, | |
3817 | struct bfd_link_order *link_order, | |
3818 | bfd_byte *data, | |
3819 | bfd_boolean relocatable, | |
3820 | asymbol **symbols) | |
252b5132 RH |
3821 | { |
3822 | Elf_Internal_Shdr *symtab_hdr; | |
3823 | asection *input_section = link_order->u.indirect.section; | |
3824 | bfd *input_bfd = input_section->owner; | |
3825 | asection **sections = NULL; | |
3826 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 3827 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
3828 | |
3829 | /* We only need to handle the case of relaxing, or of having a | |
3830 | particular set of section contents, specially. */ | |
1049f94e | 3831 | if (relocatable |
252b5132 RH |
3832 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
3833 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3834 | link_order, data, | |
1049f94e | 3835 | relocatable, |
252b5132 RH |
3836 | symbols); |
3837 | ||
3838 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3839 | ||
3840 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
eea6121a | 3841 | (size_t) input_section->size); |
252b5132 RH |
3842 | |
3843 | if ((input_section->flags & SEC_RELOC) != 0 | |
3844 | && input_section->reloc_count > 0) | |
3845 | { | |
252b5132 | 3846 | asection **secpp; |
6cdc0ccc | 3847 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 3848 | bfd_size_type amt; |
252b5132 | 3849 | |
603b7257 NC |
3850 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, |
3851 | NULL, NULL, FALSE); | |
252b5132 RH |
3852 | if (internal_relocs == NULL) |
3853 | goto error_return; | |
3854 | ||
6cdc0ccc AM |
3855 | if (symtab_hdr->sh_info != 0) |
3856 | { | |
3857 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3858 | if (isymbuf == NULL) | |
3859 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3860 | symtab_hdr->sh_info, 0, | |
3861 | NULL, NULL, NULL); | |
3862 | if (isymbuf == NULL) | |
3863 | goto error_return; | |
3864 | } | |
252b5132 | 3865 | |
9ad5cbcf AM |
3866 | amt = symtab_hdr->sh_info; |
3867 | amt *= sizeof (asection *); | |
603b7257 | 3868 | sections = bfd_malloc (amt); |
9ad5cbcf | 3869 | if (sections == NULL && amt != 0) |
252b5132 RH |
3870 | goto error_return; |
3871 | ||
6cdc0ccc AM |
3872 | isymend = isymbuf + symtab_hdr->sh_info; |
3873 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
3874 | { |
3875 | asection *isec; | |
3876 | ||
6cdc0ccc | 3877 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3878 | isec = bfd_und_section_ptr; |
6cdc0ccc | 3879 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3880 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 3881 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
3882 | isec = bfd_com_section_ptr; |
3883 | else | |
6cdc0ccc | 3884 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
3885 | |
3886 | *secpp = isec; | |
3887 | } | |
3888 | ||
3889 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
603b7257 NC |
3890 | input_section, data, internal_relocs, |
3891 | isymbuf, sections)) | |
252b5132 RH |
3892 | goto error_return; |
3893 | ||
3894 | if (sections != NULL) | |
3895 | free (sections); | |
6cdc0ccc AM |
3896 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
3897 | free (isymbuf); | |
252b5132 RH |
3898 | if (internal_relocs != elf_section_data (input_section)->relocs) |
3899 | free (internal_relocs); | |
252b5132 RH |
3900 | } |
3901 | ||
3902 | return data; | |
3903 | ||
3904 | error_return: | |
6cdc0ccc AM |
3905 | if (sections != NULL) |
3906 | free (sections); | |
3907 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3908 | free (isymbuf); | |
252b5132 RH |
3909 | if (internal_relocs != NULL |
3910 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3911 | free (internal_relocs); | |
252b5132 RH |
3912 | return NULL; |
3913 | } | |
3914 | ||
3915 | /* Assorted hash table functions. */ | |
3916 | ||
3917 | /* Initialize an entry in the link hash table. */ | |
3918 | ||
3919 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
3920 | ||
3921 | static struct bfd_hash_entry * | |
603b7257 NC |
3922 | elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry, |
3923 | struct bfd_hash_table *table, | |
3924 | const char *string) | |
252b5132 RH |
3925 | { |
3926 | struct elf32_mn10300_link_hash_entry *ret = | |
3927 | (struct elf32_mn10300_link_hash_entry *) entry; | |
3928 | ||
3929 | /* Allocate the structure if it has not already been allocated by a | |
3930 | subclass. */ | |
603b7257 NC |
3931 | if (ret == NULL) |
3932 | ret = (struct elf32_mn10300_link_hash_entry *) | |
3933 | bfd_hash_allocate (table, sizeof (* ret)); | |
3934 | if (ret == NULL) | |
252b5132 RH |
3935 | return (struct bfd_hash_entry *) ret; |
3936 | ||
3937 | /* Call the allocation method of the superclass. */ | |
603b7257 | 3938 | ret = (struct elf32_mn10300_link_hash_entry *) |
252b5132 | 3939 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
603b7257 NC |
3940 | table, string); |
3941 | if (ret != NULL) | |
252b5132 RH |
3942 | { |
3943 | ret->direct_calls = 0; | |
3944 | ret->stack_size = 0; | |
5354b572 | 3945 | ret->movm_args = 0; |
252b5132 RH |
3946 | ret->movm_stack_size = 0; |
3947 | ret->flags = 0; | |
eb13e63f | 3948 | ret->value = 0; |
252b5132 RH |
3949 | } |
3950 | ||
3951 | return (struct bfd_hash_entry *) ret; | |
3952 | } | |
3953 | ||
3954 | /* Create an mn10300 ELF linker hash table. */ | |
3955 | ||
3956 | static struct bfd_link_hash_table * | |
603b7257 | 3957 | elf32_mn10300_link_hash_table_create (bfd *abfd) |
252b5132 RH |
3958 | { |
3959 | struct elf32_mn10300_link_hash_table *ret; | |
603b7257 | 3960 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 3961 | |
603b7257 NC |
3962 | ret = bfd_malloc (amt); |
3963 | if (ret == NULL) | |
252b5132 RH |
3964 | return NULL; |
3965 | ||
66eb6687 AM |
3966 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
3967 | elf32_mn10300_link_hash_newfunc, | |
4dfe6ac6 NC |
3968 | sizeof (struct elf32_mn10300_link_hash_entry), |
3969 | MN10300_ELF_DATA)) | |
252b5132 | 3970 | { |
e2d34d7d | 3971 | free (ret); |
252b5132 RH |
3972 | return NULL; |
3973 | } | |
3974 | ||
3975 | ret->flags = 0; | |
dc810e39 | 3976 | amt = sizeof (struct elf_link_hash_table); |
603b7257 | 3977 | ret->static_hash_table = bfd_malloc (amt); |
252b5132 RH |
3978 | if (ret->static_hash_table == NULL) |
3979 | { | |
e2d34d7d | 3980 | free (ret); |
252b5132 RH |
3981 | return NULL; |
3982 | } | |
3983 | ||
66eb6687 AM |
3984 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
3985 | elf32_mn10300_link_hash_newfunc, | |
4dfe6ac6 NC |
3986 | sizeof (struct elf32_mn10300_link_hash_entry), |
3987 | MN10300_ELF_DATA)) | |
252b5132 | 3988 | { |
e2d34d7d DJ |
3989 | free (ret->static_hash_table); |
3990 | free (ret); | |
252b5132 RH |
3991 | return NULL; |
3992 | } | |
603b7257 | 3993 | return & ret->root.root; |
252b5132 RH |
3994 | } |
3995 | ||
e2d34d7d DJ |
3996 | /* Free an mn10300 ELF linker hash table. */ |
3997 | ||
3998 | static void | |
603b7257 | 3999 | elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash) |
e2d34d7d DJ |
4000 | { |
4001 | struct elf32_mn10300_link_hash_table *ret | |
4002 | = (struct elf32_mn10300_link_hash_table *) hash; | |
4003 | ||
4004 | _bfd_generic_link_hash_table_free | |
4005 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
4006 | _bfd_generic_link_hash_table_free | |
4007 | ((struct bfd_link_hash_table *) ret); | |
4008 | } | |
4009 | ||
dc810e39 | 4010 | static unsigned long |
603b7257 | 4011 | elf_mn10300_mach (flagword flags) |
252b5132 RH |
4012 | { |
4013 | switch (flags & EF_MN10300_MACH) | |
4014 | { | |
010ac81f KH |
4015 | case E_MN10300_MACH_MN10300: |
4016 | default: | |
4017 | return bfd_mach_mn10300; | |
252b5132 | 4018 | |
010ac81f KH |
4019 | case E_MN10300_MACH_AM33: |
4020 | return bfd_mach_am33; | |
b08fa4d3 AO |
4021 | |
4022 | case E_MN10300_MACH_AM33_2: | |
4023 | return bfd_mach_am33_2; | |
252b5132 RH |
4024 | } |
4025 | } | |
4026 | ||
4027 | /* The final processing done just before writing out a MN10300 ELF object | |
4028 | file. This gets the MN10300 architecture right based on the machine | |
4029 | number. */ | |
4030 | ||
603b7257 NC |
4031 | static void |
4032 | _bfd_mn10300_elf_final_write_processing (bfd *abfd, | |
4033 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 RH |
4034 | { |
4035 | unsigned long val; | |
252b5132 RH |
4036 | |
4037 | switch (bfd_get_mach (abfd)) | |
4038 | { | |
010ac81f KH |
4039 | default: |
4040 | case bfd_mach_mn10300: | |
4041 | val = E_MN10300_MACH_MN10300; | |
4042 | break; | |
4043 | ||
4044 | case bfd_mach_am33: | |
4045 | val = E_MN10300_MACH_AM33; | |
4046 | break; | |
b08fa4d3 AO |
4047 | |
4048 | case bfd_mach_am33_2: | |
4049 | val = E_MN10300_MACH_AM33_2; | |
4050 | break; | |
252b5132 RH |
4051 | } |
4052 | ||
4053 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
4054 | elf_elfheader (abfd)->e_flags |= val; | |
4055 | } | |
4056 | ||
603b7257 NC |
4057 | static bfd_boolean |
4058 | _bfd_mn10300_elf_object_p (bfd *abfd) | |
252b5132 RH |
4059 | { |
4060 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 4061 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 4062 | return TRUE; |
252b5132 RH |
4063 | } |
4064 | ||
4065 | /* Merge backend specific data from an object file to the output | |
4066 | object file when linking. */ | |
4067 | ||
603b7257 NC |
4068 | static bfd_boolean |
4069 | _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
252b5132 RH |
4070 | { |
4071 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4072 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4073 | return TRUE; |
252b5132 RH |
4074 | |
4075 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4076 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
4077 | { | |
4078 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3b36f7e6 AM |
4079 | bfd_get_mach (ibfd))) |
4080 | return FALSE; | |
252b5132 RH |
4081 | } |
4082 | ||
b34976b6 | 4083 | return TRUE; |
252b5132 RH |
4084 | } |
4085 | ||
603b7257 NC |
4086 | #define PLT0_ENTRY_SIZE 15 |
4087 | #define PLT_ENTRY_SIZE 20 | |
4088 | #define PIC_PLT_ENTRY_SIZE 24 | |
03a12831 AO |
4089 | |
4090 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
4091 | { | |
4092 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
4093 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
4094 | 0xf0, 0xf4, /* jmp (a0) */ | |
4095 | }; | |
4096 | ||
4097 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
4098 | { | |
4099 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
4100 | 0xf0, 0xf4, /* jmp (a0) */ | |
4101 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4102 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
4103 | }; | |
4104 | ||
4105 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
4106 | { | |
4107 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
4108 | 0xf0, 0xf4, /* jmp (a0) */ | |
4109 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4110 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
4111 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
4112 | 0xf0, 0xf4, /* jmp (a0) */ | |
4113 | }; | |
4114 | ||
4115 | /* Return size of the first PLT entry. */ | |
4116 | #define elf_mn10300_sizeof_plt0(info) \ | |
4117 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
4118 | ||
4119 | /* Return size of a PLT entry. */ | |
4120 | #define elf_mn10300_sizeof_plt(info) \ | |
4121 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
4122 | ||
4123 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
4124 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
4125 | ||
4126 | /* Return offset of the linker in PLT0 entry. */ | |
4127 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
4128 | ||
4129 | /* Return offset of the GOT id in PLT0 entry. */ | |
4130 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
4131 | ||
603b7257 | 4132 | /* Return offset of the temporary in PLT entry. */ |
03a12831 AO |
4133 | #define elf_mn10300_plt_temp_offset(info) 8 |
4134 | ||
4135 | /* Return offset of the symbol in PLT entry. */ | |
4136 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
4137 | ||
4138 | /* Return offset of the relocation in PLT entry. */ | |
4139 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
4140 | ||
4141 | /* The name of the dynamic interpreter. This is put in the .interp | |
4142 | section. */ | |
4143 | ||
4144 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
4145 | ||
4146 | /* Create dynamic sections when linking against a dynamic object. */ | |
4147 | ||
4148 | static bfd_boolean | |
603b7257 | 4149 | _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
03a12831 AO |
4150 | { |
4151 | flagword flags; | |
4152 | asection * s; | |
9c5bfbb7 | 4153 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
4154 | int ptralign = 0; |
4155 | ||
4156 | switch (bed->s->arch_size) | |
4157 | { | |
4158 | case 32: | |
4159 | ptralign = 2; | |
4160 | break; | |
4161 | ||
4162 | case 64: | |
4163 | ptralign = 3; | |
4164 | break; | |
4165 | ||
4166 | default: | |
4167 | bfd_set_error (bfd_error_bad_value); | |
4168 | return FALSE; | |
4169 | } | |
4170 | ||
4171 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
4172 | .rel[a].bss sections. */ | |
03a12831 AO |
4173 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4174 | | SEC_LINKER_CREATED); | |
4175 | ||
3496cb2a L |
4176 | s = bfd_make_section_with_flags (abfd, |
4177 | (bed->default_use_rela_p | |
4178 | ? ".rela.plt" : ".rel.plt"), | |
4179 | flags | SEC_READONLY); | |
03a12831 | 4180 | if (s == NULL |
03a12831 AO |
4181 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4182 | return FALSE; | |
4183 | ||
4184 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
4185 | return FALSE; | |
4186 | ||
4187 | { | |
4188 | const char * secname; | |
4189 | char * relname; | |
4190 | flagword secflags; | |
4191 | asection * sec; | |
4192 | ||
4193 | for (sec = abfd->sections; sec; sec = sec->next) | |
4194 | { | |
4195 | secflags = bfd_get_section_flags (abfd, sec); | |
4196 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
4197 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
4198 | continue; | |
4199 | ||
4200 | secname = bfd_get_section_name (abfd, sec); | |
603b7257 | 4201 | relname = bfd_malloc (strlen (secname) + 6); |
03a12831 AO |
4202 | strcpy (relname, ".rela"); |
4203 | strcat (relname, secname); | |
4204 | ||
3496cb2a L |
4205 | s = bfd_make_section_with_flags (abfd, relname, |
4206 | flags | SEC_READONLY); | |
03a12831 | 4207 | if (s == NULL |
03a12831 AO |
4208 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4209 | return FALSE; | |
4210 | } | |
4211 | } | |
4212 | ||
4213 | if (bed->want_dynbss) | |
4214 | { | |
4215 | /* The .dynbss section is a place to put symbols which are defined | |
4216 | by dynamic objects, are referenced by regular objects, and are | |
4217 | not functions. We must allocate space for them in the process | |
4218 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
4219 | initialize them at run time. The linker script puts the .dynbss | |
4220 | section into the .bss section of the final image. */ | |
3496cb2a L |
4221 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
4222 | SEC_ALLOC | SEC_LINKER_CREATED); | |
4223 | if (s == NULL) | |
03a12831 AO |
4224 | return FALSE; |
4225 | ||
4226 | /* The .rel[a].bss section holds copy relocs. This section is not | |
4227 | normally needed. We need to create it here, though, so that the | |
4228 | linker will map it to an output section. We can't just create it | |
4229 | only if we need it, because we will not know whether we need it | |
4230 | until we have seen all the input files, and the first time the | |
4231 | main linker code calls BFD after examining all the input files | |
4232 | (size_dynamic_sections) the input sections have already been | |
4233 | mapped to the output sections. If the section turns out not to | |
4234 | be needed, we can discard it later. We will never need this | |
4235 | section when generating a shared object, since they do not use | |
4236 | copy relocs. */ | |
4237 | if (! info->shared) | |
4238 | { | |
3496cb2a L |
4239 | s = bfd_make_section_with_flags (abfd, |
4240 | (bed->default_use_rela_p | |
4241 | ? ".rela.bss" : ".rel.bss"), | |
4242 | flags | SEC_READONLY); | |
03a12831 | 4243 | if (s == NULL |
03a12831 AO |
4244 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4245 | return FALSE; | |
4246 | } | |
4247 | } | |
4248 | ||
4249 | return TRUE; | |
4250 | } | |
4251 | \f | |
4252 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4253 | regular object. The current definition is in some section of the | |
4254 | dynamic object, but we're not including those sections. We have to | |
4255 | change the definition to something the rest of the link can | |
4256 | understand. */ | |
4257 | ||
4258 | static bfd_boolean | |
603b7257 NC |
4259 | _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info, |
4260 | struct elf_link_hash_entry * h) | |
03a12831 AO |
4261 | { |
4262 | bfd * dynobj; | |
4263 | asection * s; | |
03a12831 AO |
4264 | |
4265 | dynobj = elf_hash_table (info)->dynobj; | |
4266 | ||
4267 | /* Make sure we know what is going on here. */ | |
4268 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4269 | && (h->needs_plt |
f6e332e6 | 4270 | || h->u.weakdef != NULL |
f5385ebf AM |
4271 | || (h->def_dynamic |
4272 | && h->ref_regular | |
4273 | && !h->def_regular))); | |
03a12831 AO |
4274 | |
4275 | /* If this is a function, put it in the procedure linkage table. We | |
4276 | will fill in the contents of the procedure linkage table later, | |
4277 | when we know the address of the .got section. */ | |
4278 | if (h->type == STT_FUNC | |
f5385ebf | 4279 | || h->needs_plt) |
03a12831 AO |
4280 | { |
4281 | if (! info->shared | |
f5385ebf AM |
4282 | && !h->def_dynamic |
4283 | && !h->ref_dynamic) | |
03a12831 AO |
4284 | { |
4285 | /* This case can occur if we saw a PLT reloc in an input | |
4286 | file, but the symbol was never referred to by a dynamic | |
4287 | object. In such a case, we don't actually need to build | |
4288 | a procedure linkage table, and we can just do a REL32 | |
4289 | reloc instead. */ | |
f5385ebf | 4290 | BFD_ASSERT (h->needs_plt); |
03a12831 AO |
4291 | return TRUE; |
4292 | } | |
4293 | ||
4294 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4295 | if (h->dynindx == -1) | |
4296 | { | |
c152c796 | 4297 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
4298 | return FALSE; |
4299 | } | |
4300 | ||
4301 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
4302 | BFD_ASSERT (s != NULL); | |
4303 | ||
4304 | /* If this is the first .plt entry, make room for the special | |
4305 | first entry. */ | |
eea6121a AM |
4306 | if (s->size == 0) |
4307 | s->size += elf_mn10300_sizeof_plt0 (info); | |
03a12831 AO |
4308 | |
4309 | /* If this symbol is not defined in a regular file, and we are | |
4310 | not generating a shared library, then set the symbol to this | |
4311 | location in the .plt. This is required to make function | |
4312 | pointers compare as equal between the normal executable and | |
4313 | the shared library. */ | |
4314 | if (! info->shared | |
f5385ebf | 4315 | && !h->def_regular) |
03a12831 AO |
4316 | { |
4317 | h->root.u.def.section = s; | |
eea6121a | 4318 | h->root.u.def.value = s->size; |
03a12831 AO |
4319 | } |
4320 | ||
eea6121a | 4321 | h->plt.offset = s->size; |
03a12831 AO |
4322 | |
4323 | /* Make room for this entry. */ | |
eea6121a | 4324 | s->size += elf_mn10300_sizeof_plt (info); |
03a12831 AO |
4325 | |
4326 | /* We also need to make an entry in the .got.plt section, which | |
4327 | will be placed in the .got section by the linker script. */ | |
03a12831 AO |
4328 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
4329 | BFD_ASSERT (s != NULL); | |
eea6121a | 4330 | s->size += 4; |
03a12831 AO |
4331 | |
4332 | /* We also need to make an entry in the .rela.plt section. */ | |
03a12831 AO |
4333 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
4334 | BFD_ASSERT (s != NULL); | |
eea6121a | 4335 | s->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
4336 | |
4337 | return TRUE; | |
4338 | } | |
4339 | ||
4340 | /* If this is a weak symbol, and there is a real definition, the | |
4341 | processor independent code will have arranged for us to see the | |
4342 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4343 | if (h->u.weakdef != NULL) |
03a12831 | 4344 | { |
f6e332e6 AM |
4345 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4346 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4347 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4348 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
03a12831 AO |
4349 | return TRUE; |
4350 | } | |
4351 | ||
4352 | /* This is a reference to a symbol defined by a dynamic object which | |
4353 | is not a function. */ | |
4354 | ||
4355 | /* If we are creating a shared library, we must presume that the | |
4356 | only references to the symbol are via the global offset table. | |
4357 | For such cases we need not do anything here; the relocations will | |
4358 | be handled correctly by relocate_section. */ | |
4359 | if (info->shared) | |
4360 | return TRUE; | |
4361 | ||
4362 | /* If there are no references to this symbol that do not use the | |
4363 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 4364 | if (!h->non_got_ref) |
03a12831 AO |
4365 | return TRUE; |
4366 | ||
909272ee AM |
4367 | if (h->size == 0) |
4368 | { | |
4369 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4370 | h->root.root.string); | |
4371 | return TRUE; | |
4372 | } | |
4373 | ||
03a12831 AO |
4374 | /* We must allocate the symbol in our .dynbss section, which will |
4375 | become part of the .bss section of the executable. There will be | |
4376 | an entry for this symbol in the .dynsym section. The dynamic | |
4377 | object will contain position independent code, so all references | |
4378 | from the dynamic object to this symbol will go through the global | |
4379 | offset table. The dynamic linker will use the .dynsym entry to | |
4380 | determine the address it must put in the global offset table, so | |
4381 | both the dynamic object and the regular object will refer to the | |
4382 | same memory location for the variable. */ | |
4383 | ||
4384 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
4385 | BFD_ASSERT (s != NULL); | |
4386 | ||
4387 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
4388 | copy the initial value out of the dynamic object and into the | |
4389 | runtime process image. We need to remember the offset into the | |
4390 | .rela.bss section we are going to use. */ | |
4391 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4392 | { | |
4393 | asection * srel; | |
4394 | ||
4395 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
4396 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4397 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 4398 | h->needs_copy = 1; |
03a12831 AO |
4399 | } |
4400 | ||
027297b7 | 4401 | return _bfd_elf_adjust_dynamic_copy (h, s); |
03a12831 AO |
4402 | } |
4403 | ||
03a12831 AO |
4404 | /* Set the sizes of the dynamic sections. */ |
4405 | ||
4406 | static bfd_boolean | |
603b7257 NC |
4407 | _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd, |
4408 | struct bfd_link_info * info) | |
03a12831 AO |
4409 | { |
4410 | bfd * dynobj; | |
4411 | asection * s; | |
4412 | bfd_boolean plt; | |
4413 | bfd_boolean relocs; | |
4414 | bfd_boolean reltext; | |
4415 | ||
4416 | dynobj = elf_hash_table (info)->dynobj; | |
4417 | BFD_ASSERT (dynobj != NULL); | |
4418 | ||
4419 | if (elf_hash_table (info)->dynamic_sections_created) | |
4420 | { | |
4421 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 4422 | if (info->executable) |
03a12831 AO |
4423 | { |
4424 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4425 | BFD_ASSERT (s != NULL); | |
eea6121a | 4426 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
03a12831 AO |
4427 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4428 | } | |
4429 | } | |
4430 | else | |
4431 | { | |
4432 | /* We may have created entries in the .rela.got section. | |
4433 | However, if we are not creating the dynamic sections, we will | |
4434 | not actually use these entries. Reset the size of .rela.got, | |
4435 | which will cause it to get stripped from the output file | |
4436 | below. */ | |
4437 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4438 | if (s != NULL) | |
eea6121a | 4439 | s->size = 0; |
03a12831 AO |
4440 | } |
4441 | ||
03a12831 AO |
4442 | /* The check_relocs and adjust_dynamic_symbol entry points have |
4443 | determined the sizes of the various dynamic sections. Allocate | |
4444 | memory for them. */ | |
4445 | plt = FALSE; | |
4446 | relocs = FALSE; | |
4447 | reltext = FALSE; | |
4448 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4449 | { | |
4450 | const char * name; | |
03a12831 AO |
4451 | |
4452 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4453 | continue; | |
4454 | ||
4455 | /* It's OK to base decisions on the section name, because none | |
4456 | of the dynobj section names depend upon the input files. */ | |
4457 | name = bfd_get_section_name (dynobj, s); | |
4458 | ||
603b7257 | 4459 | if (streq (name, ".plt")) |
03a12831 | 4460 | { |
c456f082 AM |
4461 | /* Remember whether there is a PLT. */ |
4462 | plt = s->size != 0; | |
03a12831 | 4463 | } |
0112cd26 | 4464 | else if (CONST_STRNEQ (name, ".rela")) |
03a12831 | 4465 | { |
c456f082 | 4466 | if (s->size != 0) |
03a12831 AO |
4467 | { |
4468 | asection * target; | |
4469 | ||
4470 | /* Remember whether there are any reloc sections other | |
4471 | than .rela.plt. */ | |
603b7257 | 4472 | if (! streq (name, ".rela.plt")) |
03a12831 AO |
4473 | { |
4474 | const char * outname; | |
4475 | ||
4476 | relocs = TRUE; | |
4477 | ||
4478 | /* If this relocation section applies to a read only | |
4479 | section, then we probably need a DT_TEXTREL | |
4480 | entry. The entries in the .rela.plt section | |
4481 | really apply to the .got section, which we | |
4482 | created ourselves and so know is not readonly. */ | |
4483 | outname = bfd_get_section_name (output_bfd, | |
4484 | s->output_section); | |
4485 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
4486 | if (target != NULL | |
4487 | && (target->flags & SEC_READONLY) != 0 | |
4488 | && (target->flags & SEC_ALLOC) != 0) | |
4489 | reltext = TRUE; | |
4490 | } | |
4491 | ||
4492 | /* We use the reloc_count field as a counter if we need | |
4493 | to copy relocs into the output file. */ | |
4494 | s->reloc_count = 0; | |
4495 | } | |
4496 | } | |
0112cd26 | 4497 | else if (! CONST_STRNEQ (name, ".got") |
603b7257 | 4498 | && ! streq (name, ".dynbss")) |
03a12831 AO |
4499 | /* It's not one of our sections, so don't allocate space. */ |
4500 | continue; | |
4501 | ||
c456f082 | 4502 | if (s->size == 0) |
03a12831 | 4503 | { |
c456f082 AM |
4504 | /* If we don't need this section, strip it from the |
4505 | output file. This is mostly to handle .rela.bss and | |
4506 | .rela.plt. We must create both sections in | |
4507 | create_dynamic_sections, because they must be created | |
4508 | before the linker maps input sections to output | |
4509 | sections. The linker does that before | |
4510 | adjust_dynamic_symbol is called, and it is that | |
4511 | function which decides whether anything needs to go | |
4512 | into these sections. */ | |
8423293d | 4513 | s->flags |= SEC_EXCLUDE; |
03a12831 AO |
4514 | continue; |
4515 | } | |
4516 | ||
c456f082 AM |
4517 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
4518 | continue; | |
4519 | ||
03a12831 AO |
4520 | /* Allocate memory for the section contents. We use bfd_zalloc |
4521 | here in case unused entries are not reclaimed before the | |
4522 | section's contents are written out. This should not happen, | |
4523 | but this way if it does, we get a R_MN10300_NONE reloc | |
4524 | instead of garbage. */ | |
603b7257 | 4525 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 4526 | if (s->contents == NULL) |
03a12831 AO |
4527 | return FALSE; |
4528 | } | |
4529 | ||
4530 | if (elf_hash_table (info)->dynamic_sections_created) | |
4531 | { | |
4532 | /* Add some entries to the .dynamic section. We fill in the | |
4533 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
4534 | but we must add the entries now so that we get the correct | |
4535 | size for the .dynamic section. The DT_DEBUG entry is filled | |
4536 | in by the dynamic linker and used by the debugger. */ | |
4537 | if (! info->shared) | |
4538 | { | |
5a580b3a | 4539 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) |
03a12831 AO |
4540 | return FALSE; |
4541 | } | |
4542 | ||
4543 | if (plt) | |
4544 | { | |
5a580b3a AM |
4545 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
4546 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4547 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
4548 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
03a12831 AO |
4549 | return FALSE; |
4550 | } | |
4551 | ||
4552 | if (relocs) | |
4553 | { | |
5a580b3a AM |
4554 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
4555 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
4556 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
4557 | sizeof (Elf32_External_Rela))) | |
03a12831 AO |
4558 | return FALSE; |
4559 | } | |
4560 | ||
4561 | if (reltext) | |
4562 | { | |
5a580b3a | 4563 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
03a12831 AO |
4564 | return FALSE; |
4565 | } | |
4566 | } | |
4567 | ||
4568 | return TRUE; | |
4569 | } | |
4570 | ||
4571 | /* Finish up dynamic symbol handling. We set the contents of various | |
4572 | dynamic sections here. */ | |
4573 | ||
4574 | static bfd_boolean | |
603b7257 NC |
4575 | _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd, |
4576 | struct bfd_link_info * info, | |
4577 | struct elf_link_hash_entry * h, | |
4578 | Elf_Internal_Sym * sym) | |
03a12831 AO |
4579 | { |
4580 | bfd * dynobj; | |
4581 | ||
4582 | dynobj = elf_hash_table (info)->dynobj; | |
4583 | ||
4584 | if (h->plt.offset != (bfd_vma) -1) | |
4585 | { | |
4586 | asection * splt; | |
4587 | asection * sgot; | |
4588 | asection * srel; | |
4589 | bfd_vma plt_index; | |
4590 | bfd_vma got_offset; | |
4591 | Elf_Internal_Rela rel; | |
4592 | ||
4593 | /* This symbol has an entry in the procedure linkage table. Set | |
4594 | it up. */ | |
4595 | ||
4596 | BFD_ASSERT (h->dynindx != -1); | |
4597 | ||
4598 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4599 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4600 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4601 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4602 | ||
4603 | /* Get the index in the procedure linkage table which | |
4604 | corresponds to this symbol. This is the index of this symbol | |
4605 | in all the symbols for which we are making plt entries. The | |
4606 | first entry in the procedure linkage table is reserved. */ | |
4607 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
4608 | / elf_mn10300_sizeof_plt (info)); | |
4609 | ||
4610 | /* Get the offset into the .got table of the entry that | |
4611 | corresponds to this function. Each .got entry is 4 bytes. | |
4612 | The first three are reserved. */ | |
4613 | got_offset = (plt_index + 3) * 4; | |
4614 | ||
4615 | /* Fill in the entry in the procedure linkage table. */ | |
4616 | if (! info->shared) | |
4617 | { | |
4618 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
4619 | elf_mn10300_sizeof_plt (info)); | |
4620 | bfd_put_32 (output_bfd, | |
4621 | (sgot->output_section->vma | |
4622 | + sgot->output_offset | |
4623 | + got_offset), | |
4624 | (splt->contents + h->plt.offset | |
4625 | + elf_mn10300_plt_symbol_offset (info))); | |
4626 | ||
4627 | bfd_put_32 (output_bfd, | |
4628 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
4629 | (splt->contents + h->plt.offset | |
4630 | + elf_mn10300_plt_plt0_offset (info))); | |
4631 | } | |
4632 | else | |
4633 | { | |
4634 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
4635 | elf_mn10300_sizeof_plt (info)); | |
4636 | ||
4637 | bfd_put_32 (output_bfd, got_offset, | |
4638 | (splt->contents + h->plt.offset | |
4639 | + elf_mn10300_plt_symbol_offset (info))); | |
4640 | } | |
4641 | ||
4642 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4643 | (splt->contents + h->plt.offset | |
4644 | + elf_mn10300_plt_reloc_offset (info))); | |
4645 | ||
4646 | /* Fill in the entry in the global offset table. */ | |
4647 | bfd_put_32 (output_bfd, | |
4648 | (splt->output_section->vma | |
4649 | + splt->output_offset | |
4650 | + h->plt.offset | |
4651 | + elf_mn10300_plt_temp_offset (info)), | |
4652 | sgot->contents + got_offset); | |
4653 | ||
4654 | /* Fill in the entry in the .rela.plt section. */ | |
4655 | rel.r_offset = (sgot->output_section->vma | |
4656 | + sgot->output_offset | |
4657 | + got_offset); | |
4658 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
4659 | rel.r_addend = 0; | |
4660 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4661 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4662 | + plt_index)); | |
03a12831 | 4663 | |
f5385ebf | 4664 | if (!h->def_regular) |
03a12831 AO |
4665 | /* Mark the symbol as undefined, rather than as defined in |
4666 | the .plt section. Leave the value alone. */ | |
4667 | sym->st_shndx = SHN_UNDEF; | |
4668 | } | |
4669 | ||
4670 | if (h->got.offset != (bfd_vma) -1) | |
4671 | { | |
4672 | asection * sgot; | |
4673 | asection * srel; | |
4674 | Elf_Internal_Rela rel; | |
4675 | ||
4676 | /* This symbol has an entry in the global offset table. Set it up. */ | |
03a12831 AO |
4677 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
4678 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4679 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4680 | ||
4681 | rel.r_offset = (sgot->output_section->vma | |
4682 | + sgot->output_offset | |
603b7257 | 4683 | + (h->got.offset & ~1)); |
03a12831 AO |
4684 | |
4685 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4686 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4687 | the symbol was forced to be local because of a version file. | |
4688 | The entry in the global offset table will already have been | |
4689 | initialized in the relocate_section function. */ | |
4690 | if (info->shared | |
4691 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 4692 | && h->def_regular) |
03a12831 AO |
4693 | { |
4694 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
4695 | rel.r_addend = (h->root.u.def.value | |
4696 | + h->root.u.def.section->output_section->vma | |
4697 | + h->root.u.def.section->output_offset); | |
4698 | } | |
4699 | else | |
4700 | { | |
4701 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4702 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
4703 | rel.r_addend = 0; | |
4704 | } | |
4705 | ||
4706 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4707 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4708 | + srel->reloc_count)); | |
03a12831 AO |
4709 | ++ srel->reloc_count; |
4710 | } | |
4711 | ||
f5385ebf | 4712 | if (h->needs_copy) |
03a12831 AO |
4713 | { |
4714 | asection * s; | |
4715 | Elf_Internal_Rela rel; | |
4716 | ||
4717 | /* This symbol needs a copy reloc. Set it up. */ | |
4718 | BFD_ASSERT (h->dynindx != -1 | |
4719 | && (h->root.type == bfd_link_hash_defined | |
4720 | || h->root.type == bfd_link_hash_defweak)); | |
4721 | ||
4722 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4723 | ".rela.bss"); | |
4724 | BFD_ASSERT (s != NULL); | |
4725 | ||
4726 | rel.r_offset = (h->root.u.def.value | |
4727 | + h->root.u.def.section->output_section->vma | |
4728 | + h->root.u.def.section->output_offset); | |
4729 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
4730 | rel.r_addend = 0; | |
603b7257 | 4731 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
560e09e9 NC |
4732 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
4733 | + s->reloc_count)); | |
03a12831 AO |
4734 | ++ s->reloc_count; |
4735 | } | |
4736 | ||
4737 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
603b7257 | 4738 | if (streq (h->root.root.string, "_DYNAMIC") |
22edb2f1 | 4739 | || h == elf_hash_table (info)->hgot) |
03a12831 AO |
4740 | sym->st_shndx = SHN_ABS; |
4741 | ||
4742 | return TRUE; | |
4743 | } | |
4744 | ||
4745 | /* Finish up the dynamic sections. */ | |
4746 | ||
4747 | static bfd_boolean | |
603b7257 NC |
4748 | _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd, |
4749 | struct bfd_link_info * info) | |
03a12831 AO |
4750 | { |
4751 | bfd * dynobj; | |
4752 | asection * sgot; | |
4753 | asection * sdyn; | |
4754 | ||
4755 | dynobj = elf_hash_table (info)->dynobj; | |
4756 | ||
4757 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4758 | BFD_ASSERT (sgot != NULL); | |
4759 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4760 | ||
4761 | if (elf_hash_table (info)->dynamic_sections_created) | |
4762 | { | |
4763 | asection * splt; | |
4764 | Elf32_External_Dyn * dyncon; | |
4765 | Elf32_External_Dyn * dynconend; | |
4766 | ||
4767 | BFD_ASSERT (sdyn != NULL); | |
4768 | ||
4769 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4770 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
03a12831 AO |
4771 | |
4772 | for (; dyncon < dynconend; dyncon++) | |
4773 | { | |
4774 | Elf_Internal_Dyn dyn; | |
4775 | const char * name; | |
4776 | asection * s; | |
4777 | ||
4778 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4779 | ||
4780 | switch (dyn.d_tag) | |
4781 | { | |
4782 | default: | |
4783 | break; | |
4784 | ||
4785 | case DT_PLTGOT: | |
4786 | name = ".got"; | |
4787 | goto get_vma; | |
4788 | ||
4789 | case DT_JMPREL: | |
4790 | name = ".rela.plt"; | |
4791 | get_vma: | |
4792 | s = bfd_get_section_by_name (output_bfd, name); | |
4793 | BFD_ASSERT (s != NULL); | |
4794 | dyn.d_un.d_ptr = s->vma; | |
4795 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4796 | break; | |
4797 | ||
4798 | case DT_PLTRELSZ: | |
4799 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4800 | BFD_ASSERT (s != NULL); | |
eea6121a | 4801 | dyn.d_un.d_val = s->size; |
03a12831 AO |
4802 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4803 | break; | |
4804 | ||
4805 | case DT_RELASZ: | |
4806 | /* My reading of the SVR4 ABI indicates that the | |
4807 | procedure linkage table relocs (DT_JMPREL) should be | |
4808 | included in the overall relocs (DT_RELA). This is | |
4809 | what Solaris does. However, UnixWare can not handle | |
4810 | that case. Therefore, we override the DT_RELASZ entry | |
4811 | here to make it not include the JMPREL relocs. Since | |
4812 | the linker script arranges for .rela.plt to follow all | |
4813 | other relocation sections, we don't have to worry | |
4814 | about changing the DT_RELA entry. */ | |
4815 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4816 | if (s != NULL) | |
eea6121a | 4817 | dyn.d_un.d_val -= s->size; |
03a12831 AO |
4818 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4819 | break; | |
4820 | } | |
4821 | } | |
4822 | ||
4823 | /* Fill in the first entry in the procedure linkage table. */ | |
4824 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
eea6121a | 4825 | if (splt && splt->size > 0) |
03a12831 AO |
4826 | { |
4827 | if (info->shared) | |
4828 | { | |
4829 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
4830 | elf_mn10300_sizeof_plt (info)); | |
4831 | } | |
4832 | else | |
4833 | { | |
4834 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
4835 | bfd_put_32 (output_bfd, | |
4836 | sgot->output_section->vma + sgot->output_offset + 4, | |
4837 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
4838 | bfd_put_32 (output_bfd, | |
4839 | sgot->output_section->vma + sgot->output_offset + 8, | |
4840 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
4841 | } | |
4842 | ||
4843 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4844 | really seem like the right value. */ | |
4845 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4846 | } | |
4847 | } | |
4848 | ||
4849 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4850 | if (sgot->size > 0) |
03a12831 AO |
4851 | { |
4852 | if (sdyn == NULL) | |
4853 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4854 | else | |
4855 | bfd_put_32 (output_bfd, | |
4856 | sdyn->output_section->vma + sdyn->output_offset, | |
4857 | sgot->contents); | |
4858 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4859 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4860 | } | |
4861 | ||
4862 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4863 | ||
4864 | return TRUE; | |
4865 | } | |
4866 | ||
a873f25a AO |
4867 | /* Classify relocation types, such that combreloc can sort them |
4868 | properly. */ | |
4869 | ||
4870 | static enum elf_reloc_type_class | |
4871 | _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
4872 | { | |
4873 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
4874 | { | |
603b7257 NC |
4875 | case R_MN10300_RELATIVE: return reloc_class_relative; |
4876 | case R_MN10300_JMP_SLOT: return reloc_class_plt; | |
4877 | case R_MN10300_COPY: return reloc_class_copy; | |
4878 | default: return reloc_class_normal; | |
a873f25a AO |
4879 | } |
4880 | } | |
4881 | ||
997fbe36 NC |
4882 | /* Allocate space for an MN10300 extension to the bfd elf data structure. */ |
4883 | ||
4884 | static bfd_boolean | |
4885 | mn10300_elf_mkobject (bfd *abfd) | |
4886 | { | |
4887 | /* We do not actually need any extra room in the bfd elf data structure. | |
4888 | But we do need the object_id of the structure to be set to | |
4889 | MN10300_ELF_DATA so that elflink.c:elf_link_add_object_symols() will call | |
4890 | our mn10300_elf_check_relocs function which will then allocate space in | |
4891 | the .got section for any GOT based relocs. */ | |
4892 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), | |
4893 | MN10300_ELF_DATA); | |
4894 | } | |
4895 | ||
4896 | #define bfd_elf32_mkobject mn10300_elf_mkobject | |
4897 | ||
73c3cd1c | 4898 | #ifndef ELF_ARCH |
252b5132 RH |
4899 | #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
4900 | #define TARGET_LITTLE_NAME "elf32-mn10300" | |
4901 | #define ELF_ARCH bfd_arch_mn10300 | |
ae95ffa6 | 4902 | #define ELF_TARGET_ID MN10300_ELF_DATA |
6f4514dc AO |
4903 | #define ELF_MACHINE_CODE EM_MN10300 |
4904 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 4905 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 4906 | #endif |
252b5132 RH |
4907 | |
4908 | #define elf_info_to_howto mn10300_info_to_howto | |
4909 | #define elf_info_to_howto_rel 0 | |
4910 | #define elf_backend_can_gc_sections 1 | |
b491616a | 4911 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4912 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
4913 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
4914 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
4915 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
4916 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4917 | mn10300_elf_get_relocated_section_contents | |
4918 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4919 | elf32_mn10300_link_hash_table_create | |
e2d34d7d DJ |
4920 | #define bfd_elf32_bfd_link_hash_table_free \ |
4921 | elf32_mn10300_link_hash_table_free | |
252b5132 | 4922 | |
73c3cd1c | 4923 | #ifndef elf_symbol_leading_char |
252b5132 | 4924 | #define elf_symbol_leading_char '_' |
73c3cd1c | 4925 | #endif |
252b5132 RH |
4926 | |
4927 | /* So we can set bits in e_flags. */ | |
4928 | #define elf_backend_final_write_processing \ | |
3b36f7e6 AM |
4929 | _bfd_mn10300_elf_final_write_processing |
4930 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
252b5132 RH |
4931 | |
4932 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3b36f7e6 | 4933 | _bfd_mn10300_elf_merge_private_bfd_data |
252b5132 | 4934 | |
03a12831 AO |
4935 | #define elf_backend_can_gc_sections 1 |
4936 | #define elf_backend_create_dynamic_sections \ | |
4937 | _bfd_mn10300_elf_create_dynamic_sections | |
4938 | #define elf_backend_adjust_dynamic_symbol \ | |
4939 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
4940 | #define elf_backend_size_dynamic_sections \ | |
4941 | _bfd_mn10300_elf_size_dynamic_sections | |
74541ad4 AM |
4942 | #define elf_backend_omit_section_dynsym \ |
4943 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
03a12831 AO |
4944 | #define elf_backend_finish_dynamic_symbol \ |
4945 | _bfd_mn10300_elf_finish_dynamic_symbol | |
4946 | #define elf_backend_finish_dynamic_sections \ | |
4947 | _bfd_mn10300_elf_finish_dynamic_sections | |
4948 | ||
a873f25a AO |
4949 | #define elf_backend_reloc_type_class \ |
4950 | _bfd_mn10300_elf_reloc_type_class | |
4951 | ||
03a12831 AO |
4952 | #define elf_backend_want_got_plt 1 |
4953 | #define elf_backend_plt_readonly 1 | |
4954 | #define elf_backend_want_plt_sym 0 | |
4955 | #define elf_backend_got_header_size 12 | |
03a12831 | 4956 | |
252b5132 | 4957 | #include "elf32-target.h" |