Commit | Line | Data |
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252b5132 | 1 | /* Matsushita 10300 specific support for 32-bit ELF |
66eb6687 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
ab96bf03 | 3 | 2006, 2007 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) \ | |
101 | ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) | |
102 | ||
103 | #define elf32_mn10300_link_hash_traverse(table, func, info) \ | |
104 | (elf_link_hash_traverse \ | |
105 | (&(table)->root, \ | |
603b7257 | 106 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
107 | (info))) |
108 | ||
603b7257 NC |
109 | static reloc_howto_type elf_mn10300_howto_table[] = |
110 | { | |
252b5132 RH |
111 | /* Dummy relocation. Does nothing. */ |
112 | HOWTO (R_MN10300_NONE, | |
113 | 0, | |
114 | 2, | |
115 | 16, | |
b34976b6 | 116 | FALSE, |
252b5132 RH |
117 | 0, |
118 | complain_overflow_bitfield, | |
119 | bfd_elf_generic_reloc, | |
120 | "R_MN10300_NONE", | |
b34976b6 | 121 | FALSE, |
252b5132 RH |
122 | 0, |
123 | 0, | |
b34976b6 | 124 | FALSE), |
252b5132 RH |
125 | /* Standard 32 bit reloc. */ |
126 | HOWTO (R_MN10300_32, | |
127 | 0, | |
128 | 2, | |
129 | 32, | |
b34976b6 | 130 | FALSE, |
252b5132 RH |
131 | 0, |
132 | complain_overflow_bitfield, | |
133 | bfd_elf_generic_reloc, | |
134 | "R_MN10300_32", | |
b34976b6 | 135 | FALSE, |
252b5132 RH |
136 | 0xffffffff, |
137 | 0xffffffff, | |
b34976b6 | 138 | FALSE), |
252b5132 RH |
139 | /* Standard 16 bit reloc. */ |
140 | HOWTO (R_MN10300_16, | |
141 | 0, | |
142 | 1, | |
143 | 16, | |
b34976b6 | 144 | FALSE, |
252b5132 RH |
145 | 0, |
146 | complain_overflow_bitfield, | |
147 | bfd_elf_generic_reloc, | |
148 | "R_MN10300_16", | |
b34976b6 | 149 | FALSE, |
252b5132 RH |
150 | 0xffff, |
151 | 0xffff, | |
b34976b6 | 152 | FALSE), |
252b5132 RH |
153 | /* Standard 8 bit reloc. */ |
154 | HOWTO (R_MN10300_8, | |
155 | 0, | |
156 | 0, | |
157 | 8, | |
b34976b6 | 158 | FALSE, |
252b5132 RH |
159 | 0, |
160 | complain_overflow_bitfield, | |
161 | bfd_elf_generic_reloc, | |
162 | "R_MN10300_8", | |
b34976b6 | 163 | FALSE, |
252b5132 RH |
164 | 0xff, |
165 | 0xff, | |
b34976b6 | 166 | FALSE), |
252b5132 RH |
167 | /* Standard 32bit pc-relative reloc. */ |
168 | HOWTO (R_MN10300_PCREL32, | |
169 | 0, | |
170 | 2, | |
171 | 32, | |
b34976b6 | 172 | TRUE, |
252b5132 RH |
173 | 0, |
174 | complain_overflow_bitfield, | |
175 | bfd_elf_generic_reloc, | |
176 | "R_MN10300_PCREL32", | |
b34976b6 | 177 | FALSE, |
252b5132 RH |
178 | 0xffffffff, |
179 | 0xffffffff, | |
b34976b6 | 180 | TRUE), |
252b5132 RH |
181 | /* Standard 16bit pc-relative reloc. */ |
182 | HOWTO (R_MN10300_PCREL16, | |
183 | 0, | |
184 | 1, | |
185 | 16, | |
b34976b6 | 186 | TRUE, |
252b5132 RH |
187 | 0, |
188 | complain_overflow_bitfield, | |
189 | bfd_elf_generic_reloc, | |
190 | "R_MN10300_PCREL16", | |
b34976b6 | 191 | FALSE, |
252b5132 RH |
192 | 0xffff, |
193 | 0xffff, | |
b34976b6 | 194 | TRUE), |
252b5132 RH |
195 | /* Standard 8 pc-relative reloc. */ |
196 | HOWTO (R_MN10300_PCREL8, | |
197 | 0, | |
198 | 0, | |
199 | 8, | |
b34976b6 | 200 | TRUE, |
252b5132 RH |
201 | 0, |
202 | complain_overflow_bitfield, | |
203 | bfd_elf_generic_reloc, | |
204 | "R_MN10300_PCREL8", | |
b34976b6 | 205 | FALSE, |
252b5132 RH |
206 | 0xff, |
207 | 0xff, | |
b34976b6 | 208 | TRUE), |
252b5132 | 209 | |
603b7257 | 210 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
211 | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ |
212 | 0, /* rightshift */ | |
213 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
214 | 0, /* bitsize */ | |
b34976b6 | 215 | FALSE, /* pc_relative */ |
252b5132 RH |
216 | 0, /* bitpos */ |
217 | complain_overflow_dont, /* complain_on_overflow */ | |
218 | NULL, /* special_function */ | |
219 | "R_MN10300_GNU_VTINHERIT", /* name */ | |
b34976b6 | 220 | FALSE, /* partial_inplace */ |
252b5132 RH |
221 | 0, /* src_mask */ |
222 | 0, /* dst_mask */ | |
b34976b6 | 223 | FALSE), /* pcrel_offset */ |
252b5132 RH |
224 | |
225 | /* GNU extension to record C++ vtable member usage */ | |
226 | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ | |
227 | 0, /* rightshift */ | |
228 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
229 | 0, /* bitsize */ | |
b34976b6 | 230 | FALSE, /* pc_relative */ |
252b5132 RH |
231 | 0, /* bitpos */ |
232 | complain_overflow_dont, /* complain_on_overflow */ | |
233 | NULL, /* special_function */ | |
234 | "R_MN10300_GNU_VTENTRY", /* name */ | |
b34976b6 | 235 | FALSE, /* partial_inplace */ |
252b5132 RH |
236 | 0, /* src_mask */ |
237 | 0, /* dst_mask */ | |
b34976b6 | 238 | FALSE), /* pcrel_offset */ |
252b5132 RH |
239 | |
240 | /* Standard 24 bit reloc. */ | |
241 | HOWTO (R_MN10300_24, | |
242 | 0, | |
243 | 2, | |
244 | 24, | |
b34976b6 | 245 | FALSE, |
252b5132 RH |
246 | 0, |
247 | complain_overflow_bitfield, | |
248 | bfd_elf_generic_reloc, | |
249 | "R_MN10300_24", | |
b34976b6 | 250 | FALSE, |
252b5132 RH |
251 | 0xffffff, |
252 | 0xffffff, | |
b34976b6 | 253 | FALSE), |
03a12831 AO |
254 | HOWTO (R_MN10300_GOTPC32, /* type */ |
255 | 0, /* rightshift */ | |
256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
257 | 32, /* bitsize */ | |
258 | TRUE, /* pc_relative */ | |
259 | 0, /* bitpos */ | |
260 | complain_overflow_bitfield, /* complain_on_overflow */ | |
261 | bfd_elf_generic_reloc, /* */ | |
262 | "R_MN10300_GOTPC32", /* name */ | |
263 | FALSE, /* partial_inplace */ | |
264 | 0xffffffff, /* src_mask */ | |
265 | 0xffffffff, /* dst_mask */ | |
266 | TRUE), /* pcrel_offset */ | |
267 | ||
268 | HOWTO (R_MN10300_GOTPC16, /* type */ | |
269 | 0, /* rightshift */ | |
270 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 16, /* bitsize */ | |
272 | TRUE, /* pc_relative */ | |
273 | 0, /* bitpos */ | |
274 | complain_overflow_bitfield, /* complain_on_overflow */ | |
275 | bfd_elf_generic_reloc, /* */ | |
276 | "R_MN10300_GOTPC16", /* name */ | |
277 | FALSE, /* partial_inplace */ | |
278 | 0xffff, /* src_mask */ | |
279 | 0xffff, /* dst_mask */ | |
280 | TRUE), /* pcrel_offset */ | |
281 | ||
282 | HOWTO (R_MN10300_GOTOFF32, /* type */ | |
283 | 0, /* rightshift */ | |
284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 32, /* bitsize */ | |
286 | FALSE, /* pc_relative */ | |
287 | 0, /* bitpos */ | |
288 | complain_overflow_bitfield, /* complain_on_overflow */ | |
289 | bfd_elf_generic_reloc, /* */ | |
290 | "R_MN10300_GOTOFF32", /* name */ | |
291 | FALSE, /* partial_inplace */ | |
292 | 0xffffffff, /* src_mask */ | |
293 | 0xffffffff, /* dst_mask */ | |
294 | FALSE), /* pcrel_offset */ | |
295 | ||
296 | HOWTO (R_MN10300_GOTOFF24, /* type */ | |
297 | 0, /* rightshift */ | |
298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 24, /* bitsize */ | |
300 | FALSE, /* pc_relative */ | |
301 | 0, /* bitpos */ | |
302 | complain_overflow_bitfield, /* complain_on_overflow */ | |
303 | bfd_elf_generic_reloc, /* */ | |
304 | "R_MN10300_GOTOFF24", /* name */ | |
305 | FALSE, /* partial_inplace */ | |
306 | 0xffffff, /* src_mask */ | |
307 | 0xffffff, /* dst_mask */ | |
308 | FALSE), /* pcrel_offset */ | |
309 | ||
310 | HOWTO (R_MN10300_GOTOFF16, /* type */ | |
311 | 0, /* rightshift */ | |
312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 16, /* bitsize */ | |
314 | FALSE, /* pc_relative */ | |
315 | 0, /* bitpos */ | |
316 | complain_overflow_bitfield, /* complain_on_overflow */ | |
317 | bfd_elf_generic_reloc, /* */ | |
318 | "R_MN10300_GOTOFF16", /* name */ | |
319 | FALSE, /* partial_inplace */ | |
320 | 0xffff, /* src_mask */ | |
321 | 0xffff, /* dst_mask */ | |
322 | FALSE), /* pcrel_offset */ | |
323 | ||
324 | HOWTO (R_MN10300_PLT32, /* type */ | |
325 | 0, /* rightshift */ | |
326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 32, /* bitsize */ | |
328 | TRUE, /* pc_relative */ | |
329 | 0, /* bitpos */ | |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* */ | |
332 | "R_MN10300_PLT32", /* name */ | |
333 | FALSE, /* partial_inplace */ | |
334 | 0xffffffff, /* src_mask */ | |
335 | 0xffffffff, /* dst_mask */ | |
336 | TRUE), /* pcrel_offset */ | |
337 | ||
338 | HOWTO (R_MN10300_PLT16, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
342 | TRUE, /* pc_relative */ | |
343 | 0, /* bitpos */ | |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
345 | bfd_elf_generic_reloc, /* */ | |
346 | "R_MN10300_PLT16", /* name */ | |
347 | FALSE, /* partial_inplace */ | |
348 | 0xffff, /* src_mask */ | |
349 | 0xffff, /* dst_mask */ | |
350 | TRUE), /* pcrel_offset */ | |
351 | ||
352 | HOWTO (R_MN10300_GOT32, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 32, /* bitsize */ | |
356 | FALSE, /* pc_relative */ | |
357 | 0, /* bitpos */ | |
358 | complain_overflow_bitfield, /* complain_on_overflow */ | |
359 | bfd_elf_generic_reloc, /* */ | |
360 | "R_MN10300_GOT32", /* name */ | |
361 | FALSE, /* partial_inplace */ | |
362 | 0xffffffff, /* src_mask */ | |
363 | 0xffffffff, /* dst_mask */ | |
364 | FALSE), /* pcrel_offset */ | |
365 | ||
366 | HOWTO (R_MN10300_GOT24, /* type */ | |
367 | 0, /* rightshift */ | |
368 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
369 | 24, /* bitsize */ | |
370 | FALSE, /* pc_relative */ | |
371 | 0, /* bitpos */ | |
372 | complain_overflow_bitfield, /* complain_on_overflow */ | |
373 | bfd_elf_generic_reloc, /* */ | |
374 | "R_MN10300_GOT24", /* name */ | |
375 | FALSE, /* partial_inplace */ | |
376 | 0xffffffff, /* src_mask */ | |
377 | 0xffffffff, /* dst_mask */ | |
378 | FALSE), /* pcrel_offset */ | |
379 | ||
380 | HOWTO (R_MN10300_GOT16, /* type */ | |
381 | 0, /* rightshift */ | |
382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
383 | 16, /* bitsize */ | |
384 | FALSE, /* pc_relative */ | |
385 | 0, /* bitpos */ | |
386 | complain_overflow_bitfield, /* complain_on_overflow */ | |
387 | bfd_elf_generic_reloc, /* */ | |
388 | "R_MN10300_GOT16", /* name */ | |
389 | FALSE, /* partial_inplace */ | |
390 | 0xffffffff, /* src_mask */ | |
391 | 0xffffffff, /* dst_mask */ | |
392 | FALSE), /* pcrel_offset */ | |
393 | ||
394 | HOWTO (R_MN10300_COPY, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 32, /* bitsize */ | |
398 | FALSE, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_bitfield, /* complain_on_overflow */ | |
401 | bfd_elf_generic_reloc, /* */ | |
402 | "R_MN10300_COPY", /* name */ | |
403 | FALSE, /* partial_inplace */ | |
404 | 0xffffffff, /* src_mask */ | |
405 | 0xffffffff, /* dst_mask */ | |
406 | FALSE), /* pcrel_offset */ | |
407 | ||
408 | HOWTO (R_MN10300_GLOB_DAT, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 32, /* bitsize */ | |
412 | FALSE, /* pc_relative */ | |
413 | 0, /* bitpos */ | |
414 | complain_overflow_bitfield, /* complain_on_overflow */ | |
415 | bfd_elf_generic_reloc, /* */ | |
416 | "R_MN10300_GLOB_DAT", /* name */ | |
417 | FALSE, /* partial_inplace */ | |
418 | 0xffffffff, /* src_mask */ | |
419 | 0xffffffff, /* dst_mask */ | |
420 | FALSE), /* pcrel_offset */ | |
421 | ||
422 | HOWTO (R_MN10300_JMP_SLOT, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 32, /* bitsize */ | |
426 | FALSE, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_bitfield, /* complain_on_overflow */ | |
429 | bfd_elf_generic_reloc, /* */ | |
430 | "R_MN10300_JMP_SLOT", /* name */ | |
431 | FALSE, /* partial_inplace */ | |
432 | 0xffffffff, /* src_mask */ | |
433 | 0xffffffff, /* dst_mask */ | |
434 | FALSE), /* pcrel_offset */ | |
435 | ||
436 | HOWTO (R_MN10300_RELATIVE, /* type */ | |
437 | 0, /* rightshift */ | |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 32, /* bitsize */ | |
440 | FALSE, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_bitfield, /* complain_on_overflow */ | |
443 | bfd_elf_generic_reloc, /* */ | |
444 | "R_MN10300_RELATIVE", /* name */ | |
445 | FALSE, /* partial_inplace */ | |
446 | 0xffffffff, /* src_mask */ | |
447 | 0xffffffff, /* dst_mask */ | |
448 | FALSE), /* pcrel_offset */ | |
bfff1642 NC |
449 | |
450 | EMPTY_HOWTO (24), | |
451 | EMPTY_HOWTO (25), | |
452 | EMPTY_HOWTO (26), | |
453 | EMPTY_HOWTO (27), | |
454 | EMPTY_HOWTO (28), | |
455 | EMPTY_HOWTO (29), | |
456 | EMPTY_HOWTO (30), | |
457 | EMPTY_HOWTO (31), | |
458 | EMPTY_HOWTO (32), | |
459 | ||
460 | HOWTO (R_MN10300_SYM_DIFF, /* type */ | |
461 | 0, /* rightshift */ | |
462 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
463 | 32, /* bitsize */ | |
464 | FALSE, /* pc_relative */ | |
465 | 0, /* bitpos */ | |
466 | complain_overflow_dont,/* complain_on_overflow */ | |
467 | NULL, /* special handler. */ | |
468 | "R_MN10300_SYM_DIFF", /* name */ | |
469 | FALSE, /* partial_inplace */ | |
470 | 0xffffffff, /* src_mask */ | |
471 | 0xffffffff, /* dst_mask */ | |
569006e5 NC |
472 | FALSE), /* pcrel_offset */ |
473 | ||
474 | HOWTO (R_MN10300_ALIGN, /* type */ | |
475 | 0, /* rightshift */ | |
476 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
477 | 32, /* bitsize */ | |
478 | FALSE, /* pc_relative */ | |
479 | 0, /* bitpos */ | |
480 | complain_overflow_dont,/* complain_on_overflow */ | |
481 | NULL, /* special handler. */ | |
482 | "R_MN10300_ALIGN", /* name */ | |
483 | FALSE, /* partial_inplace */ | |
484 | 0, /* src_mask */ | |
485 | 0, /* dst_mask */ | |
bfff1642 | 486 | FALSE) /* pcrel_offset */ |
252b5132 RH |
487 | }; |
488 | ||
603b7257 NC |
489 | struct mn10300_reloc_map |
490 | { | |
252b5132 RH |
491 | bfd_reloc_code_real_type bfd_reloc_val; |
492 | unsigned char elf_reloc_val; | |
493 | }; | |
494 | ||
603b7257 NC |
495 | static const struct mn10300_reloc_map mn10300_reloc_map[] = |
496 | { | |
252b5132 RH |
497 | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
498 | { BFD_RELOC_32, R_MN10300_32, }, | |
499 | { BFD_RELOC_16, R_MN10300_16, }, | |
500 | { BFD_RELOC_8, R_MN10300_8, }, | |
501 | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, | |
502 | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, | |
503 | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, | |
504 | { BFD_RELOC_24, R_MN10300_24, }, | |
505 | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, | |
506 | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, | |
03a12831 AO |
507 | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
508 | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, | |
509 | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, | |
510 | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, | |
511 | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, | |
512 | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, | |
513 | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, | |
514 | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, | |
515 | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, | |
516 | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, | |
517 | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, | |
518 | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, | |
519 | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, | |
520 | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, | |
569006e5 NC |
521 | { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF }, |
522 | { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN } | |
252b5132 RH |
523 | }; |
524 | ||
03a12831 AO |
525 | /* Create the GOT section. */ |
526 | ||
527 | static bfd_boolean | |
603b7257 NC |
528 | _bfd_mn10300_elf_create_got_section (bfd * abfd, |
529 | struct bfd_link_info * info) | |
03a12831 AO |
530 | { |
531 | flagword flags; | |
532 | flagword pltflags; | |
533 | asection * s; | |
534 | struct elf_link_hash_entry * h; | |
9c5bfbb7 | 535 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
536 | int ptralign; |
537 | ||
538 | /* This function may be called more than once. */ | |
539 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
540 | return TRUE; | |
541 | ||
542 | switch (bed->s->arch_size) | |
543 | { | |
544 | case 32: | |
545 | ptralign = 2; | |
546 | break; | |
547 | ||
548 | case 64: | |
549 | ptralign = 3; | |
550 | break; | |
551 | ||
552 | default: | |
553 | bfd_set_error (bfd_error_bad_value); | |
554 | return FALSE; | |
555 | } | |
556 | ||
557 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
558 | | SEC_LINKER_CREATED); | |
559 | ||
560 | pltflags = flags; | |
561 | pltflags |= SEC_CODE; | |
562 | if (bed->plt_not_loaded) | |
563 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
564 | if (bed->plt_readonly) | |
565 | pltflags |= SEC_READONLY; | |
566 | ||
3496cb2a | 567 | s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
03a12831 | 568 | if (s == NULL |
03a12831 AO |
569 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
570 | return FALSE; | |
571 | ||
d98685ac AM |
572 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
573 | .plt section. */ | |
7325306f RS |
574 | if (bed->want_plt_sym) |
575 | { | |
576 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
577 | "_PROCEDURE_LINKAGE_TABLE_"); | |
578 | elf_hash_table (info)->hplt = h; | |
579 | if (h == NULL) | |
580 | return FALSE; | |
581 | } | |
03a12831 | 582 | |
3496cb2a | 583 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
03a12831 | 584 | if (s == NULL |
03a12831 AO |
585 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
586 | return FALSE; | |
587 | ||
588 | if (bed->want_got_plt) | |
589 | { | |
3496cb2a | 590 | s = bfd_make_section_with_flags (abfd, ".got.plt", flags); |
03a12831 | 591 | if (s == NULL |
03a12831 AO |
592 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
593 | return FALSE; | |
594 | } | |
595 | ||
596 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
597 | (or .got.plt) section. We don't do this in the linker script | |
598 | because we don't want to define the symbol if we are not creating | |
599 | a global offset table. */ | |
d98685ac | 600 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
03a12831 | 601 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
602 | if (h == NULL) |
603 | return FALSE; | |
03a12831 AO |
604 | |
605 | /* The first bit of the global offset table is the header. */ | |
3b36f7e6 | 606 | s->size += bed->got_header_size; |
03a12831 AO |
607 | |
608 | return TRUE; | |
609 | } | |
610 | ||
252b5132 | 611 | static reloc_howto_type * |
603b7257 NC |
612 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
613 | bfd_reloc_code_real_type code) | |
252b5132 RH |
614 | { |
615 | unsigned int i; | |
616 | ||
603b7257 NC |
617 | for (i = ARRAY_SIZE (mn10300_reloc_map); i--;) |
618 | if (mn10300_reloc_map[i].bfd_reloc_val == code) | |
619 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; | |
252b5132 RH |
620 | |
621 | return NULL; | |
622 | } | |
623 | ||
157090f7 AM |
624 | static reloc_howto_type * |
625 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
626 | const char *r_name) | |
627 | { | |
628 | unsigned int i; | |
629 | ||
603b7257 | 630 | for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;) |
157090f7 AM |
631 | if (elf_mn10300_howto_table[i].name != NULL |
632 | && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0) | |
603b7257 | 633 | return elf_mn10300_howto_table + i; |
157090f7 AM |
634 | |
635 | return NULL; | |
636 | } | |
637 | ||
252b5132 RH |
638 | /* Set the howto pointer for an MN10300 ELF reloc. */ |
639 | ||
640 | static void | |
603b7257 NC |
641 | mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
642 | arelent *cache_ptr, | |
643 | Elf_Internal_Rela *dst) | |
252b5132 RH |
644 | { |
645 | unsigned int r_type; | |
646 | ||
647 | r_type = ELF32_R_TYPE (dst->r_info); | |
648 | BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); | |
603b7257 | 649 | cache_ptr->howto = elf_mn10300_howto_table + r_type; |
252b5132 RH |
650 | } |
651 | ||
652 | /* Look through the relocs for a section during the first phase. | |
653 | Since we don't do .gots or .plts, we just need to consider the | |
654 | virtual table relocs for gc. */ | |
655 | ||
b34976b6 | 656 | static bfd_boolean |
603b7257 NC |
657 | mn10300_elf_check_relocs (bfd *abfd, |
658 | struct bfd_link_info *info, | |
659 | asection *sec, | |
660 | const Elf_Internal_Rela *relocs) | |
252b5132 | 661 | { |
bfff1642 | 662 | bfd_boolean sym_diff_reloc_seen; |
252b5132 | 663 | Elf_Internal_Shdr *symtab_hdr; |
62d7f790 | 664 | Elf_Internal_Sym * isymbuf = NULL; |
5582a088 | 665 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
666 | const Elf_Internal_Rela *rel; |
667 | const Elf_Internal_Rela *rel_end; | |
03a12831 AO |
668 | bfd * dynobj; |
669 | bfd_vma * local_got_offsets; | |
670 | asection * sgot; | |
671 | asection * srelgot; | |
672 | asection * sreloc; | |
62d7f790 | 673 | bfd_boolean result = FALSE; |
03a12831 AO |
674 | |
675 | sgot = NULL; | |
676 | srelgot = NULL; | |
677 | sreloc = NULL; | |
252b5132 | 678 | |
1049f94e | 679 | if (info->relocatable) |
b34976b6 | 680 | return TRUE; |
252b5132 RH |
681 | |
682 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
62d7f790 | 683 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
252b5132 | 684 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 685 | |
03a12831 AO |
686 | dynobj = elf_hash_table (info)->dynobj; |
687 | local_got_offsets = elf_local_got_offsets (abfd); | |
252b5132 | 688 | rel_end = relocs + sec->reloc_count; |
bfff1642 | 689 | sym_diff_reloc_seen = FALSE; |
603b7257 | 690 | |
252b5132 RH |
691 | for (rel = relocs; rel < rel_end; rel++) |
692 | { | |
693 | struct elf_link_hash_entry *h; | |
694 | unsigned long r_symndx; | |
62d7f790 | 695 | unsigned int r_type; |
252b5132 RH |
696 | |
697 | r_symndx = ELF32_R_SYM (rel->r_info); | |
698 | if (r_symndx < symtab_hdr->sh_info) | |
699 | h = NULL; | |
700 | else | |
973a3492 L |
701 | { |
702 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
703 | while (h->root.type == bfd_link_hash_indirect | |
704 | || h->root.type == bfd_link_hash_warning) | |
705 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
706 | } | |
252b5132 | 707 | |
62d7f790 NC |
708 | r_type = ELF32_R_TYPE (rel->r_info); |
709 | ||
03a12831 AO |
710 | /* Some relocs require a global offset table. */ |
711 | if (dynobj == NULL) | |
712 | { | |
62d7f790 | 713 | switch (r_type) |
03a12831 AO |
714 | { |
715 | case R_MN10300_GOT32: | |
716 | case R_MN10300_GOT24: | |
717 | case R_MN10300_GOT16: | |
718 | case R_MN10300_GOTOFF32: | |
719 | case R_MN10300_GOTOFF24: | |
720 | case R_MN10300_GOTOFF16: | |
721 | case R_MN10300_GOTPC32: | |
722 | case R_MN10300_GOTPC16: | |
723 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
724 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) | |
62d7f790 | 725 | goto fail; |
03a12831 AO |
726 | break; |
727 | ||
728 | default: | |
729 | break; | |
730 | } | |
731 | } | |
732 | ||
62d7f790 | 733 | switch (r_type) |
252b5132 RH |
734 | { |
735 | /* This relocation describes the C++ object vtable hierarchy. | |
736 | Reconstruct it for later use during GC. */ | |
737 | case R_MN10300_GNU_VTINHERIT: | |
c152c796 | 738 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
62d7f790 | 739 | goto fail; |
252b5132 RH |
740 | break; |
741 | ||
742 | /* This relocation describes which C++ vtable entries are actually | |
743 | used. Record for later use during GC. */ | |
744 | case R_MN10300_GNU_VTENTRY: | |
d17e0c6e JB |
745 | BFD_ASSERT (h != NULL); |
746 | if (h != NULL | |
747 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
62d7f790 | 748 | goto fail; |
252b5132 | 749 | break; |
62d7f790 | 750 | |
03a12831 AO |
751 | case R_MN10300_GOT32: |
752 | case R_MN10300_GOT24: | |
753 | case R_MN10300_GOT16: | |
754 | /* This symbol requires a global offset table entry. */ | |
755 | ||
756 | if (sgot == NULL) | |
757 | { | |
758 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
759 | BFD_ASSERT (sgot != NULL); | |
760 | } | |
761 | ||
762 | if (srelgot == NULL | |
763 | && (h != NULL || info->shared)) | |
764 | { | |
765 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
766 | if (srelgot == NULL) | |
767 | { | |
3496cb2a L |
768 | srelgot = bfd_make_section_with_flags (dynobj, |
769 | ".rela.got", | |
770 | (SEC_ALLOC | |
771 | | SEC_LOAD | |
772 | | SEC_HAS_CONTENTS | |
773 | | SEC_IN_MEMORY | |
774 | | SEC_LINKER_CREATED | |
775 | | SEC_READONLY)); | |
03a12831 | 776 | if (srelgot == NULL |
03a12831 | 777 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) |
62d7f790 | 778 | goto fail; |
03a12831 AO |
779 | } |
780 | } | |
781 | ||
782 | if (h != NULL) | |
783 | { | |
784 | if (h->got.offset != (bfd_vma) -1) | |
785 | /* We have already allocated space in the .got. */ | |
786 | break; | |
787 | ||
eea6121a | 788 | h->got.offset = sgot->size; |
03a12831 AO |
789 | |
790 | /* Make sure this symbol is output as a dynamic symbol. */ | |
791 | if (h->dynindx == -1) | |
792 | { | |
c152c796 | 793 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
62d7f790 | 794 | goto fail; |
03a12831 AO |
795 | } |
796 | ||
eea6121a | 797 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
798 | } |
799 | else | |
800 | { | |
801 | /* This is a global offset table entry for a local | |
3b36f7e6 | 802 | symbol. */ |
03a12831 AO |
803 | if (local_got_offsets == NULL) |
804 | { | |
805 | size_t size; | |
806 | unsigned int i; | |
807 | ||
808 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
603b7257 | 809 | local_got_offsets = bfd_alloc (abfd, size); |
03a12831 AO |
810 | |
811 | if (local_got_offsets == NULL) | |
62d7f790 NC |
812 | goto fail; |
813 | ||
03a12831 AO |
814 | elf_local_got_offsets (abfd) = local_got_offsets; |
815 | ||
816 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
817 | local_got_offsets[i] = (bfd_vma) -1; | |
818 | } | |
819 | ||
820 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
821 | /* We have already allocated space in the .got. */ | |
822 | break; | |
823 | ||
eea6121a | 824 | local_got_offsets[r_symndx] = sgot->size; |
03a12831 AO |
825 | |
826 | if (info->shared) | |
827 | /* If we are generating a shared object, we need to | |
828 | output a R_MN10300_RELATIVE reloc so that the dynamic | |
829 | linker can adjust this GOT entry. */ | |
eea6121a | 830 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
831 | } |
832 | ||
eea6121a | 833 | sgot->size += 4; |
03a12831 AO |
834 | break; |
835 | ||
836 | case R_MN10300_PLT32: | |
837 | case R_MN10300_PLT16: | |
838 | /* This symbol requires a procedure linkage table entry. We | |
839 | actually build the entry in adjust_dynamic_symbol, | |
840 | because this might be a case of linking PIC code which is | |
841 | never referenced by a dynamic object, in which case we | |
842 | don't need to generate a procedure linkage table entry | |
843 | after all. */ | |
844 | ||
845 | /* If this is a local symbol, we resolve it directly without | |
846 | creating a procedure linkage table entry. */ | |
847 | if (h == NULL) | |
848 | continue; | |
849 | ||
850 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
851 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
852 | break; | |
853 | ||
f5385ebf | 854 | h->needs_plt = 1; |
03a12831 AO |
855 | break; |
856 | ||
03a12831 AO |
857 | case R_MN10300_24: |
858 | case R_MN10300_16: | |
859 | case R_MN10300_8: | |
860 | case R_MN10300_PCREL32: | |
861 | case R_MN10300_PCREL16: | |
862 | case R_MN10300_PCREL8: | |
863 | if (h != NULL) | |
f5385ebf | 864 | h->non_got_ref = 1; |
146ccdbb | 865 | break; |
03a12831 | 866 | |
bfff1642 NC |
867 | case R_MN10300_SYM_DIFF: |
868 | sym_diff_reloc_seen = TRUE; | |
869 | break; | |
870 | ||
146ccdbb AO |
871 | case R_MN10300_32: |
872 | if (h != NULL) | |
f5385ebf | 873 | h->non_got_ref = 1; |
146ccdbb | 874 | |
bfff1642 NC |
875 | /* If we are creating a shared library, then we |
876 | need to copy the reloc into the shared library. */ | |
03a12831 | 877 | if (info->shared |
bfff1642 NC |
878 | && (sec->flags & SEC_ALLOC) != 0 |
879 | /* Do not generate a dynamic reloc for a | |
880 | reloc associated with a SYM_DIFF operation. */ | |
881 | && ! sym_diff_reloc_seen) | |
03a12831 | 882 | { |
bfff1642 | 883 | asection * sym_section = NULL; |
03a12831 | 884 | |
bfff1642 NC |
885 | /* Find the section containing the |
886 | symbol involved in the relocation. */ | |
887 | if (h == NULL) | |
888 | { | |
bfff1642 NC |
889 | Elf_Internal_Sym * isym; |
890 | ||
bfff1642 NC |
891 | if (isymbuf == NULL) |
892 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
893 | symtab_hdr->sh_info, 0, | |
894 | NULL, NULL, NULL); | |
895 | if (isymbuf) | |
896 | { | |
897 | isym = isymbuf + r_symndx; | |
898 | /* All we care about is whether this local symbol is absolute. */ | |
899 | if (isym->st_shndx == SHN_ABS) | |
900 | sym_section = bfd_abs_section_ptr; | |
901 | } | |
902 | } | |
903 | else | |
904 | { | |
905 | if (h->root.type == bfd_link_hash_defined | |
906 | || h->root.type == bfd_link_hash_defweak) | |
907 | sym_section = h->root.u.def.section; | |
908 | } | |
03a12831 | 909 | |
bfff1642 NC |
910 | /* If the symbol is absolute then the relocation can |
911 | be resolved during linking and there is no need for | |
912 | a dynamic reloc. */ | |
913 | if (sym_section != bfd_abs_section_ptr) | |
914 | { | |
915 | /* When creating a shared object, we must copy these | |
916 | reloc types into the output file. We create a reloc | |
917 | section in dynobj and make room for this reloc. */ | |
03a12831 AO |
918 | if (sreloc == NULL) |
919 | { | |
83bac4b0 NC |
920 | sreloc = _bfd_elf_make_dynamic_reloc_section |
921 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
bfff1642 | 922 | if (sreloc == NULL) |
83bac4b0 | 923 | goto fail; |
03a12831 | 924 | } |
03a12831 | 925 | |
bfff1642 NC |
926 | sreloc->size += sizeof (Elf32_External_Rela); |
927 | } | |
03a12831 AO |
928 | } |
929 | ||
930 | break; | |
252b5132 | 931 | } |
bfff1642 NC |
932 | |
933 | if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF) | |
934 | sym_diff_reloc_seen = FALSE; | |
252b5132 RH |
935 | } |
936 | ||
62d7f790 NC |
937 | result = TRUE; |
938 | fail: | |
939 | if (isymbuf != NULL) | |
940 | free (isymbuf); | |
941 | ||
942 | return result; | |
252b5132 RH |
943 | } |
944 | ||
945 | /* Return the section that should be marked against GC for a given | |
946 | relocation. */ | |
947 | ||
948 | static asection * | |
07adf181 AM |
949 | mn10300_elf_gc_mark_hook (asection *sec, |
950 | struct bfd_link_info *info, | |
951 | Elf_Internal_Rela *rel, | |
952 | struct elf_link_hash_entry *h, | |
953 | Elf_Internal_Sym *sym) | |
252b5132 RH |
954 | { |
955 | if (h != NULL) | |
07adf181 AM |
956 | switch (ELF32_R_TYPE (rel->r_info)) |
957 | { | |
958 | case R_MN10300_GNU_VTINHERIT: | |
959 | case R_MN10300_GNU_VTENTRY: | |
960 | return NULL; | |
961 | } | |
962 | ||
963 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
964 | } |
965 | ||
966 | /* Perform a relocation as part of a final link. */ | |
603b7257 | 967 | |
252b5132 | 968 | static bfd_reloc_status_type |
603b7257 NC |
969 | mn10300_elf_final_link_relocate (reloc_howto_type *howto, |
970 | bfd *input_bfd, | |
971 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
972 | asection *input_section, | |
973 | bfd_byte *contents, | |
974 | bfd_vma offset, | |
975 | bfd_vma value, | |
976 | bfd_vma addend, | |
977 | struct elf_link_hash_entry * h, | |
978 | unsigned long symndx, | |
979 | struct bfd_link_info *info, | |
980 | asection *sym_sec ATTRIBUTE_UNUSED, | |
981 | int is_local ATTRIBUTE_UNUSED) | |
252b5132 | 982 | { |
bfff1642 NC |
983 | static asection * sym_diff_section; |
984 | static bfd_vma sym_diff_value; | |
985 | bfd_boolean is_sym_diff_reloc; | |
252b5132 | 986 | unsigned long r_type = howto->type; |
603b7257 | 987 | bfd_byte * hit_data = contents + offset; |
03a12831 AO |
988 | bfd * dynobj; |
989 | bfd_vma * local_got_offsets; | |
990 | asection * sgot; | |
991 | asection * splt; | |
992 | asection * sreloc; | |
993 | ||
994 | dynobj = elf_hash_table (info)->dynobj; | |
995 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
996 | ||
997 | sgot = NULL; | |
998 | splt = NULL; | |
999 | sreloc = NULL; | |
252b5132 | 1000 | |
146ccdbb AO |
1001 | switch (r_type) |
1002 | { | |
1003 | case R_MN10300_24: | |
1004 | case R_MN10300_16: | |
1005 | case R_MN10300_8: | |
1006 | case R_MN10300_PCREL8: | |
1007 | case R_MN10300_PCREL16: | |
1008 | case R_MN10300_PCREL32: | |
1009 | case R_MN10300_GOTOFF32: | |
1010 | case R_MN10300_GOTOFF24: | |
1011 | case R_MN10300_GOTOFF16: | |
1012 | if (info->shared | |
1013 | && (input_section->flags & SEC_ALLOC) != 0 | |
1014 | && h != NULL | |
7e2294f9 | 1015 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
146ccdbb AO |
1016 | return bfd_reloc_dangerous; |
1017 | } | |
1018 | ||
bfff1642 NC |
1019 | is_sym_diff_reloc = FALSE; |
1020 | if (sym_diff_section != NULL) | |
1021 | { | |
1022 | BFD_ASSERT (sym_diff_section == input_section); | |
1023 | ||
1024 | switch (r_type) | |
1025 | { | |
1026 | case R_MN10300_32: | |
1027 | case R_MN10300_24: | |
1028 | case R_MN10300_16: | |
1029 | case R_MN10300_8: | |
1030 | value -= sym_diff_value; | |
b5f5fd96 NC |
1031 | /* If we are computing a 32-bit value for the location lists |
1032 | and the result is 0 then we add one to the value. A zero | |
1033 | value can result because of linker relaxation deleteing | |
1034 | prologue instructions and using a value of 1 (for the begin | |
1035 | and end offsets in the location list entry) results in a | |
1036 | nul entry which does not prevent the following entries from | |
1037 | being parsed. */ | |
1038 | if (r_type == R_MN10300_32 | |
1039 | && value == 0 | |
1040 | && strcmp (input_section->name, ".debug_loc") == 0) | |
1041 | value = 1; | |
bfff1642 NC |
1042 | sym_diff_section = NULL; |
1043 | is_sym_diff_reloc = TRUE; | |
1044 | break; | |
1045 | ||
1046 | default: | |
1047 | sym_diff_section = NULL; | |
1048 | break; | |
1049 | } | |
1050 | } | |
1051 | ||
252b5132 RH |
1052 | switch (r_type) |
1053 | { | |
bfff1642 NC |
1054 | case R_MN10300_SYM_DIFF: |
1055 | BFD_ASSERT (addend == 0); | |
1056 | /* Cache the input section and value. | |
1057 | The offset is unreliable, since relaxation may | |
1058 | have reduced the following reloc's offset. */ | |
1059 | sym_diff_section = input_section; | |
1060 | sym_diff_value = value; | |
1061 | return bfd_reloc_ok; | |
1062 | ||
569006e5 | 1063 | case R_MN10300_ALIGN: |
252b5132 RH |
1064 | case R_MN10300_NONE: |
1065 | return bfd_reloc_ok; | |
1066 | ||
1067 | case R_MN10300_32: | |
03a12831 | 1068 | if (info->shared |
bfff1642 NC |
1069 | /* Do not generate relocs when an R_MN10300_32 has been used |
1070 | with an R_MN10300_SYM_DIFF to compute a difference of two | |
1071 | symbols. */ | |
1072 | && is_sym_diff_reloc == FALSE | |
1073 | /* Also, do not generate a reloc when the symbol associated | |
1074 | with the R_MN10300_32 reloc is absolute - there is no | |
1075 | need for a run time computation in this case. */ | |
1076 | && sym_sec != bfd_abs_section_ptr | |
1077 | /* If the section is not going to be allocated at load time | |
1078 | then there is no need to generate relocs for it. */ | |
03a12831 AO |
1079 | && (input_section->flags & SEC_ALLOC) != 0) |
1080 | { | |
1081 | Elf_Internal_Rela outrel; | |
1082 | bfd_boolean skip, relocate; | |
1083 | ||
1084 | /* When generating a shared object, these relocations are | |
1085 | copied into the output file to be resolved at run | |
1086 | time. */ | |
1087 | if (sreloc == NULL) | |
1088 | { | |
83bac4b0 NC |
1089 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1090 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1091 | if (sreloc == NULL) | |
03a12831 | 1092 | return FALSE; |
03a12831 AO |
1093 | } |
1094 | ||
1095 | skip = FALSE; | |
1096 | ||
eea6121a AM |
1097 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1098 | input_section, offset); | |
1099 | if (outrel.r_offset == (bfd_vma) -1) | |
1100 | skip = TRUE; | |
03a12831 AO |
1101 | |
1102 | outrel.r_offset += (input_section->output_section->vma | |
1103 | + input_section->output_offset); | |
1104 | ||
1105 | if (skip) | |
1106 | { | |
1107 | memset (&outrel, 0, sizeof outrel); | |
1108 | relocate = FALSE; | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | /* h->dynindx may be -1 if this symbol was marked to | |
1113 | become local. */ | |
1114 | if (h == NULL | |
7e2294f9 | 1115 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1116 | { |
1117 | relocate = TRUE; | |
1118 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1119 | outrel.r_addend = value + addend; | |
1120 | } | |
1121 | else | |
1122 | { | |
1123 | BFD_ASSERT (h->dynindx != -1); | |
1124 | relocate = FALSE; | |
1125 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1126 | outrel.r_addend = value + addend; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1131 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1132 | + sreloc->reloc_count)); | |
03a12831 AO |
1133 | ++sreloc->reloc_count; |
1134 | ||
1135 | /* If this reloc is against an external symbol, we do | |
1136 | not want to fiddle with the addend. Otherwise, we | |
1137 | need to include the symbol value so that it becomes | |
1138 | an addend for the dynamic reloc. */ | |
1139 | if (! relocate) | |
1140 | return bfd_reloc_ok; | |
1141 | } | |
252b5132 RH |
1142 | value += addend; |
1143 | bfd_put_32 (input_bfd, value, hit_data); | |
1144 | return bfd_reloc_ok; | |
1145 | ||
1146 | case R_MN10300_24: | |
1147 | value += addend; | |
1148 | ||
010ac81f | 1149 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1150 | return bfd_reloc_overflow; |
1151 | ||
1152 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1153 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1154 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1155 | return bfd_reloc_ok; | |
1156 | ||
1157 | case R_MN10300_16: | |
1158 | value += addend; | |
1159 | ||
010ac81f | 1160 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1161 | return bfd_reloc_overflow; |
1162 | ||
1163 | bfd_put_16 (input_bfd, value, hit_data); | |
1164 | return bfd_reloc_ok; | |
1165 | ||
1166 | case R_MN10300_8: | |
1167 | value += addend; | |
1168 | ||
010ac81f | 1169 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1170 | return bfd_reloc_overflow; |
1171 | ||
1172 | bfd_put_8 (input_bfd, value, hit_data); | |
1173 | return bfd_reloc_ok; | |
1174 | ||
1175 | case R_MN10300_PCREL8: | |
1176 | value -= (input_section->output_section->vma | |
1177 | + input_section->output_offset); | |
1178 | value -= offset; | |
1179 | value += addend; | |
1180 | ||
605d18d4 | 1181 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1182 | return bfd_reloc_overflow; |
1183 | ||
1184 | bfd_put_8 (input_bfd, value, hit_data); | |
1185 | return bfd_reloc_ok; | |
1186 | ||
1187 | case R_MN10300_PCREL16: | |
1188 | value -= (input_section->output_section->vma | |
1189 | + input_section->output_offset); | |
1190 | value -= offset; | |
1191 | value += addend; | |
1192 | ||
605d18d4 | 1193 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1194 | return bfd_reloc_overflow; |
1195 | ||
1196 | bfd_put_16 (input_bfd, value, hit_data); | |
1197 | return bfd_reloc_ok; | |
1198 | ||
1199 | case R_MN10300_PCREL32: | |
1200 | value -= (input_section->output_section->vma | |
1201 | + input_section->output_offset); | |
1202 | value -= offset; | |
1203 | value += addend; | |
1204 | ||
1205 | bfd_put_32 (input_bfd, value, hit_data); | |
1206 | return bfd_reloc_ok; | |
1207 | ||
1208 | case R_MN10300_GNU_VTINHERIT: | |
1209 | case R_MN10300_GNU_VTENTRY: | |
1210 | return bfd_reloc_ok; | |
1211 | ||
03a12831 AO |
1212 | case R_MN10300_GOTPC32: |
1213 | /* Use global offset table as symbol value. */ | |
03a12831 AO |
1214 | value = bfd_get_section_by_name (dynobj, |
1215 | ".got")->output_section->vma; | |
1216 | value -= (input_section->output_section->vma | |
1217 | + input_section->output_offset); | |
1218 | value -= offset; | |
1219 | value += addend; | |
1220 | ||
1221 | bfd_put_32 (input_bfd, value, hit_data); | |
1222 | return bfd_reloc_ok; | |
3b36f7e6 | 1223 | |
03a12831 AO |
1224 | case R_MN10300_GOTPC16: |
1225 | /* Use global offset table as symbol value. */ | |
03a12831 AO |
1226 | value = bfd_get_section_by_name (dynobj, |
1227 | ".got")->output_section->vma; | |
1228 | value -= (input_section->output_section->vma | |
1229 | + input_section->output_offset); | |
1230 | value -= offset; | |
1231 | value += addend; | |
1232 | ||
605d18d4 | 1233 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1234 | return bfd_reloc_overflow; |
1235 | ||
1236 | bfd_put_16 (input_bfd, value, hit_data); | |
1237 | return bfd_reloc_ok; | |
1238 | ||
1239 | case R_MN10300_GOTOFF32: | |
1240 | value -= bfd_get_section_by_name (dynobj, | |
1241 | ".got")->output_section->vma; | |
1242 | value += addend; | |
3b36f7e6 | 1243 | |
03a12831 AO |
1244 | bfd_put_32 (input_bfd, value, hit_data); |
1245 | return bfd_reloc_ok; | |
1246 | ||
1247 | case R_MN10300_GOTOFF24: | |
1248 | value -= bfd_get_section_by_name (dynobj, | |
1249 | ".got")->output_section->vma; | |
1250 | value += addend; | |
3b36f7e6 | 1251 | |
03a12831 AO |
1252 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1253 | return bfd_reloc_overflow; | |
1254 | ||
1255 | bfd_put_8 (input_bfd, value, hit_data); | |
1256 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1257 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1258 | return bfd_reloc_ok; | |
1259 | ||
1260 | case R_MN10300_GOTOFF16: | |
1261 | value -= bfd_get_section_by_name (dynobj, | |
1262 | ".got")->output_section->vma; | |
1263 | value += addend; | |
3b36f7e6 | 1264 | |
605d18d4 | 1265 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1266 | return bfd_reloc_overflow; |
1267 | ||
1268 | bfd_put_16 (input_bfd, value, hit_data); | |
1269 | return bfd_reloc_ok; | |
1270 | ||
1271 | case R_MN10300_PLT32: | |
1272 | if (h != NULL | |
1273 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1274 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1275 | && h->plt.offset != (bfd_vma) -1) | |
1276 | { | |
1277 | asection * splt; | |
1278 | ||
1279 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3b36f7e6 | 1280 | |
03a12831 AO |
1281 | value = (splt->output_section->vma |
1282 | + splt->output_offset | |
1283 | + h->plt.offset) - value; | |
1284 | } | |
1285 | ||
1286 | value -= (input_section->output_section->vma | |
1287 | + input_section->output_offset); | |
1288 | value -= offset; | |
1289 | value += addend; | |
1290 | ||
1291 | bfd_put_32 (input_bfd, value, hit_data); | |
1292 | return bfd_reloc_ok; | |
1293 | ||
1294 | case R_MN10300_PLT16: | |
1295 | if (h != NULL | |
1296 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1297 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1298 | && h->plt.offset != (bfd_vma) -1) | |
1299 | { | |
1300 | asection * splt; | |
1301 | ||
1302 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3b36f7e6 | 1303 | |
03a12831 AO |
1304 | value = (splt->output_section->vma |
1305 | + splt->output_offset | |
1306 | + h->plt.offset) - value; | |
1307 | } | |
1308 | ||
1309 | value -= (input_section->output_section->vma | |
1310 | + input_section->output_offset); | |
1311 | value -= offset; | |
1312 | value += addend; | |
1313 | ||
605d18d4 | 1314 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1315 | return bfd_reloc_overflow; |
1316 | ||
1317 | bfd_put_16 (input_bfd, value, hit_data); | |
1318 | return bfd_reloc_ok; | |
1319 | ||
1320 | case R_MN10300_GOT32: | |
1321 | case R_MN10300_GOT24: | |
1322 | case R_MN10300_GOT16: | |
1323 | { | |
1324 | asection * sgot; | |
1325 | ||
1326 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3b36f7e6 | 1327 | |
03a12831 AO |
1328 | if (h != NULL) |
1329 | { | |
1330 | bfd_vma off; | |
1331 | ||
1332 | off = h->got.offset; | |
1333 | BFD_ASSERT (off != (bfd_vma) -1); | |
1334 | ||
1335 | if (! elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1336 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1337 | /* This is actually a static link, or it is a |
1338 | -Bsymbolic link and the symbol is defined | |
1339 | locally, or the symbol was forced to be local | |
1340 | because of a version file. We must initialize | |
1341 | this entry in the global offset table. | |
1342 | ||
1343 | When doing a dynamic link, we create a .rela.got | |
1344 | relocation entry to initialize the value. This | |
1345 | is done in the finish_dynamic_symbol routine. */ | |
1346 | bfd_put_32 (output_bfd, value, | |
1347 | sgot->contents + off); | |
1348 | ||
1349 | value = sgot->output_offset + off; | |
1350 | } | |
1351 | else | |
1352 | { | |
1353 | bfd_vma off; | |
1354 | ||
1355 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1356 | ||
1357 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
1358 | ||
1359 | if (info->shared) | |
1360 | { | |
1361 | asection * srelgot; | |
1362 | Elf_Internal_Rela outrel; | |
1363 | ||
1364 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1365 | BFD_ASSERT (srelgot != NULL); | |
1366 | ||
1367 | outrel.r_offset = (sgot->output_section->vma | |
1368 | + sgot->output_offset | |
1369 | + off); | |
1370 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1371 | outrel.r_addend = value; | |
1372 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1373 | (bfd_byte *) (((Elf32_External_Rela *) |
1374 | srelgot->contents) | |
1375 | + srelgot->reloc_count)); | |
03a12831 AO |
1376 | ++ srelgot->reloc_count; |
1377 | } | |
1378 | ||
1379 | value = sgot->output_offset + off; | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | value += addend; | |
1384 | ||
1385 | if (r_type == R_MN10300_GOT32) | |
1386 | { | |
1387 | bfd_put_32 (input_bfd, value, hit_data); | |
1388 | return bfd_reloc_ok; | |
1389 | } | |
1390 | else if (r_type == R_MN10300_GOT24) | |
1391 | { | |
1392 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1393 | return bfd_reloc_overflow; | |
1394 | ||
1395 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1396 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1397 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1398 | return bfd_reloc_ok; | |
1399 | } | |
1400 | else if (r_type == R_MN10300_GOT16) | |
1401 | { | |
605d18d4 | 1402 | if ((long) value > 0x7fff || (long) value < -0x8000) |
03a12831 AO |
1403 | return bfd_reloc_overflow; |
1404 | ||
1405 | bfd_put_16 (input_bfd, value, hit_data); | |
1406 | return bfd_reloc_ok; | |
1407 | } | |
1408 | /* Fall through. */ | |
3b36f7e6 | 1409 | |
252b5132 RH |
1410 | default: |
1411 | return bfd_reloc_notsupported; | |
1412 | } | |
1413 | } | |
252b5132 RH |
1414 | \f |
1415 | /* Relocate an MN10300 ELF section. */ | |
603b7257 | 1416 | |
b34976b6 | 1417 | static bfd_boolean |
603b7257 NC |
1418 | mn10300_elf_relocate_section (bfd *output_bfd, |
1419 | struct bfd_link_info *info, | |
1420 | bfd *input_bfd, | |
1421 | asection *input_section, | |
1422 | bfd_byte *contents, | |
1423 | Elf_Internal_Rela *relocs, | |
1424 | Elf_Internal_Sym *local_syms, | |
1425 | asection **local_sections) | |
252b5132 RH |
1426 | { |
1427 | Elf_Internal_Shdr *symtab_hdr; | |
b2a8e766 | 1428 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
1429 | Elf_Internal_Rela *rel, *relend; |
1430 | ||
1431 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
b2a8e766 | 1432 | sym_hashes = elf_sym_hashes (input_bfd); |
252b5132 RH |
1433 | |
1434 | rel = relocs; | |
1435 | relend = relocs + input_section->reloc_count; | |
1436 | for (; rel < relend; rel++) | |
1437 | { | |
1438 | int r_type; | |
1439 | reloc_howto_type *howto; | |
1440 | unsigned long r_symndx; | |
1441 | Elf_Internal_Sym *sym; | |
1442 | asection *sec; | |
1443 | struct elf32_mn10300_link_hash_entry *h; | |
1444 | bfd_vma relocation; | |
1445 | bfd_reloc_status_type r; | |
1446 | ||
1447 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1448 | r_type = ELF32_R_TYPE (rel->r_info); | |
1449 | howto = elf_mn10300_howto_table + r_type; | |
1450 | ||
1451 | /* Just skip the vtable gc relocs. */ | |
1452 | if (r_type == R_MN10300_GNU_VTINHERIT | |
1453 | || r_type == R_MN10300_GNU_VTENTRY) | |
1454 | continue; | |
1455 | ||
252b5132 RH |
1456 | h = NULL; |
1457 | sym = NULL; | |
1458 | sec = NULL; | |
1459 | if (r_symndx < symtab_hdr->sh_info) | |
1460 | { | |
1461 | sym = local_syms + r_symndx; | |
1462 | sec = local_sections[r_symndx]; | |
8517fae7 | 1463 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1464 | } |
1465 | else | |
1466 | { | |
560e09e9 NC |
1467 | bfd_boolean unresolved_reloc; |
1468 | bfd_boolean warned; | |
1469 | struct elf_link_hash_entry *hh; | |
1470 | ||
b2a8e766 AM |
1471 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1472 | r_symndx, symtab_hdr, sym_hashes, | |
1473 | hh, sec, relocation, | |
1474 | unresolved_reloc, warned); | |
560e09e9 NC |
1475 | |
1476 | h = (struct elf32_mn10300_link_hash_entry *) hh; | |
1477 | ||
1478 | if ((h->root.root.type == bfd_link_hash_defined | |
252b5132 | 1479 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 1480 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
1481 | || r_type == R_MN10300_GOTPC16 |
1482 | || (( r_type == R_MN10300_PLT32 | |
1483 | || r_type == R_MN10300_PLT16) | |
1484 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
1485 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
1486 | && h->root.plt.offset != (bfd_vma) -1) | |
1487 | || (( r_type == R_MN10300_GOT32 | |
1488 | || r_type == R_MN10300_GOT24 | |
1489 | || r_type == R_MN10300_GOT16) | |
1490 | && elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1491 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
146ccdbb | 1492 | || (r_type == R_MN10300_32 |
bfff1642 NC |
1493 | /* _32 relocs in executables force _COPY relocs, |
1494 | such that the address of the symbol ends up | |
1495 | being local. */ | |
1496 | && !info->executable | |
7e2294f9 | 1497 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
03a12831 AO |
1498 | && ((input_section->flags & SEC_ALLOC) != 0 |
1499 | /* DWARF will emit R_MN10300_32 relocations | |
1500 | in its sections against symbols defined | |
1501 | externally in shared libraries. We can't | |
1502 | do anything with them here. */ | |
1503 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1504 | && h->root.def_dynamic))))) |
560e09e9 NC |
1505 | /* In these cases, we don't need the relocation |
1506 | value. We check specially because in some | |
1507 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 1508 | relocation = 0; |
560e09e9 | 1509 | |
ab96bf03 | 1510 | else if (!info->relocatable && unresolved_reloc) |
560e09e9 | 1511 | (*_bfd_error_handler) |
843fe662 L |
1512 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
1513 | input_bfd, | |
1514 | input_section, | |
1515 | (long) rel->r_offset, | |
1516 | howto->name, | |
1517 | h->root.root.root.string); | |
252b5132 RH |
1518 | } |
1519 | ||
ab96bf03 AM |
1520 | if (sec != NULL && elf_discarded_section (sec)) |
1521 | { | |
1522 | /* For relocs against symbols from removed linkonce sections, | |
1523 | or sections discarded by a linker script, we just want the | |
1524 | section contents zeroed. Avoid any special processing. */ | |
1525 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1526 | rel->r_info = 0; | |
1527 | rel->r_addend = 0; | |
1528 | continue; | |
1529 | } | |
1530 | ||
1531 | if (info->relocatable) | |
1532 | continue; | |
1533 | ||
252b5132 RH |
1534 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1535 | input_section, | |
1536 | contents, rel->r_offset, | |
1537 | relocation, rel->r_addend, | |
603b7257 | 1538 | (struct elf_link_hash_entry *) h, |
03a12831 | 1539 | r_symndx, |
252b5132 RH |
1540 | info, sec, h == NULL); |
1541 | ||
1542 | if (r != bfd_reloc_ok) | |
1543 | { | |
1544 | const char *name; | |
603b7257 | 1545 | const char *msg = NULL; |
252b5132 RH |
1546 | |
1547 | if (h != NULL) | |
1548 | name = h->root.root.root.string; | |
1549 | else | |
1550 | { | |
1551 | name = (bfd_elf_string_from_elf_section | |
1552 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1553 | if (name == NULL || *name == '\0') | |
1554 | name = bfd_section_name (input_bfd, sec); | |
1555 | } | |
1556 | ||
1557 | switch (r) | |
1558 | { | |
1559 | case bfd_reloc_overflow: | |
1560 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1561 | (info, (h ? &h->root.root : NULL), name, |
1562 | howto->name, (bfd_vma) 0, input_bfd, | |
1563 | input_section, rel->r_offset))) | |
b34976b6 | 1564 | return FALSE; |
252b5132 RH |
1565 | break; |
1566 | ||
1567 | case bfd_reloc_undefined: | |
1568 | if (! ((*info->callbacks->undefined_symbol) | |
1569 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1570 | rel->r_offset, TRUE))) |
1571 | return FALSE; | |
252b5132 RH |
1572 | break; |
1573 | ||
1574 | case bfd_reloc_outofrange: | |
1575 | msg = _("internal error: out of range error"); | |
1576 | goto common_error; | |
1577 | ||
1578 | case bfd_reloc_notsupported: | |
1579 | msg = _("internal error: unsupported relocation error"); | |
1580 | goto common_error; | |
1581 | ||
1582 | case bfd_reloc_dangerous: | |
c9b57b7e DD |
1583 | if (r_type == R_MN10300_PCREL32) |
1584 | msg = _("error: inappropriate relocation type for shared" | |
1585 | " library (did you forget -fpic?)"); | |
1586 | else | |
1587 | msg = _("internal error: suspicious relocation type used" | |
1588 | " in shared library"); | |
252b5132 RH |
1589 | goto common_error; |
1590 | ||
1591 | default: | |
1592 | msg = _("internal error: unknown error"); | |
603b7257 | 1593 | /* Fall through. */ |
252b5132 RH |
1594 | |
1595 | common_error: | |
1596 | if (!((*info->callbacks->warning) | |
1597 | (info, msg, name, input_bfd, input_section, | |
1598 | rel->r_offset))) | |
b34976b6 | 1599 | return FALSE; |
252b5132 RH |
1600 | break; |
1601 | } | |
1602 | } | |
1603 | } | |
1604 | ||
b34976b6 | 1605 | return TRUE; |
252b5132 RH |
1606 | } |
1607 | ||
1608 | /* Finish initializing one hash table entry. */ | |
603b7257 | 1609 | |
b34976b6 | 1610 | static bfd_boolean |
603b7257 NC |
1611 | elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry, |
1612 | void * in_args) | |
252b5132 RH |
1613 | { |
1614 | struct elf32_mn10300_link_hash_entry *entry; | |
603b7257 | 1615 | struct bfd_link_info *link_info = (struct bfd_link_info *) in_args; |
252b5132 RH |
1616 | unsigned int byte_count = 0; |
1617 | ||
010ac81f | 1618 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 | 1619 | |
e92d460e AM |
1620 | if (entry->root.root.type == bfd_link_hash_warning) |
1621 | entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; | |
1622 | ||
252b5132 RH |
1623 | /* If we already know we want to convert "call" to "calls" for calls |
1624 | to this symbol, then return now. */ | |
1625 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 1626 | return TRUE; |
252b5132 RH |
1627 | |
1628 | /* If there are no named calls to this symbol, or there's nothing we | |
1055df0f AO |
1629 | can move from the function itself into the "call" instruction, |
1630 | then note that all "call" instructions should be converted into | |
1631 | "calls" instructions and return. If a symbol is available for | |
1632 | dynamic symbol resolution (overridable or overriding), avoid | |
1633 | custom calling conventions. */ | |
252b5132 | 1634 | if (entry->direct_calls == 0 |
1055df0f AO |
1635 | || (entry->stack_size == 0 && entry->movm_args == 0) |
1636 | || (elf_hash_table (link_info)->dynamic_sections_created | |
1637 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL | |
1638 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) | |
252b5132 RH |
1639 | { |
1640 | /* Make a note that we should convert "call" instructions to "calls" | |
1641 | instructions for calls to this symbol. */ | |
1642 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 1643 | return TRUE; |
252b5132 RH |
1644 | } |
1645 | ||
1646 | /* We may be able to move some instructions from the function itself into | |
1647 | the "call" instruction. Count how many bytes we might be able to | |
1648 | eliminate in the function itself. */ | |
1649 | ||
1650 | /* A movm instruction is two bytes. */ | |
1651 | if (entry->movm_args) | |
1652 | byte_count += 2; | |
1653 | ||
1654 | /* Count the insn to allocate stack space too. */ | |
1a101a42 AM |
1655 | if (entry->stack_size > 0) |
1656 | { | |
1657 | if (entry->stack_size <= 128) | |
1658 | byte_count += 3; | |
1659 | else | |
1660 | byte_count += 4; | |
1661 | } | |
252b5132 RH |
1662 | |
1663 | /* If using "call" will result in larger code, then turn all | |
4cc11e76 | 1664 | the associated "call" instructions into "calls" instructions. */ |
252b5132 RH |
1665 | if (byte_count < entry->direct_calls) |
1666 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1667 | ||
1668 | /* This routine never fails. */ | |
b34976b6 | 1669 | return TRUE; |
252b5132 RH |
1670 | } |
1671 | ||
eb13e63f | 1672 | /* Used to count hash table entries. */ |
603b7257 | 1673 | |
eb13e63f DD |
1674 | static bfd_boolean |
1675 | elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, | |
603b7257 | 1676 | void * in_args) |
eb13e63f | 1677 | { |
bfff1642 | 1678 | int *count = (int *) in_args; |
eb13e63f DD |
1679 | |
1680 | (*count) ++; | |
1681 | return TRUE; | |
1682 | } | |
1683 | ||
1684 | /* Used to enumerate hash table entries into a linear array. */ | |
603b7257 | 1685 | |
eb13e63f DD |
1686 | static bfd_boolean |
1687 | elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, | |
603b7257 | 1688 | void * in_args) |
eb13e63f DD |
1689 | { |
1690 | struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; | |
1691 | ||
1692 | **ptr = gen_entry; | |
1693 | (*ptr) ++; | |
1694 | return TRUE; | |
1695 | } | |
1696 | ||
1697 | /* Used to sort the array created by the above. */ | |
603b7257 | 1698 | |
eb13e63f DD |
1699 | static int |
1700 | sort_by_value (const void *va, const void *vb) | |
1701 | { | |
1702 | struct elf32_mn10300_link_hash_entry *a | |
bfff1642 | 1703 | = *(struct elf32_mn10300_link_hash_entry **) va; |
eb13e63f | 1704 | struct elf32_mn10300_link_hash_entry *b |
bfff1642 | 1705 | = *(struct elf32_mn10300_link_hash_entry **) vb; |
eb13e63f DD |
1706 | |
1707 | return a->value - b->value; | |
1708 | } | |
1709 | ||
603b7257 NC |
1710 | /* Compute the stack size and movm arguments for the function |
1711 | referred to by HASH at address ADDR in section with | |
1712 | contents CONTENTS, store the information in the hash table. */ | |
1713 | ||
1714 | static void | |
1715 | compute_function_info (bfd *abfd, | |
1716 | struct elf32_mn10300_link_hash_entry *hash, | |
1717 | bfd_vma addr, | |
1718 | unsigned char *contents) | |
1719 | { | |
1720 | unsigned char byte1, byte2; | |
1721 | /* We only care about a very small subset of the possible prologue | |
1722 | sequences here. Basically we look for: | |
1723 | ||
1724 | movm [d2,d3,a2,a3],sp (optional) | |
1725 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
1726 | 8 bit number) | |
1727 | ||
1728 | If we find anything else, we quit. */ | |
1729 | ||
1730 | /* Look for movm [regs],sp. */ | |
1731 | byte1 = bfd_get_8 (abfd, contents + addr); | |
1732 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
1733 | ||
1734 | if (byte1 == 0xcf) | |
1735 | { | |
1736 | hash->movm_args = byte2; | |
1737 | addr += 2; | |
1738 | byte1 = bfd_get_8 (abfd, contents + addr); | |
1739 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
1740 | } | |
1741 | ||
1742 | /* Now figure out how much stack space will be allocated by the movm | |
1743 | instruction. We need this kept separate from the function's normal | |
1744 | stack space. */ | |
1745 | if (hash->movm_args) | |
1746 | { | |
1747 | /* Space for d2. */ | |
1748 | if (hash->movm_args & 0x80) | |
1749 | hash->movm_stack_size += 4; | |
1750 | ||
1751 | /* Space for d3. */ | |
1752 | if (hash->movm_args & 0x40) | |
1753 | hash->movm_stack_size += 4; | |
1754 | ||
1755 | /* Space for a2. */ | |
1756 | if (hash->movm_args & 0x20) | |
1757 | hash->movm_stack_size += 4; | |
1758 | ||
1759 | /* Space for a3. */ | |
1760 | if (hash->movm_args & 0x10) | |
1761 | hash->movm_stack_size += 4; | |
1762 | ||
1763 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
1764 | if (hash->movm_args & 0x08) | |
1765 | hash->movm_stack_size += 8 * 4; | |
1766 | ||
1767 | if (bfd_get_mach (abfd) == bfd_mach_am33 | |
1768 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
1769 | { | |
1770 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
1771 | if (hash->movm_args & 0x1) | |
1772 | hash->movm_stack_size += 6 * 4; | |
1773 | ||
1774 | /* exreg1 space. e4, e5, e6, e7 */ | |
1775 | if (hash->movm_args & 0x2) | |
1776 | hash->movm_stack_size += 4 * 4; | |
1777 | ||
1778 | /* exreg0 space. e2, e3 */ | |
1779 | if (hash->movm_args & 0x4) | |
1780 | hash->movm_stack_size += 2 * 4; | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | /* Now look for the two stack adjustment variants. */ | |
1785 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
1786 | { | |
1787 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
1788 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
1789 | ||
1790 | hash->stack_size = -temp; | |
1791 | } | |
1792 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
1793 | { | |
1794 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
1795 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
1796 | temp = -temp; | |
1797 | ||
1798 | if (temp < 255) | |
1799 | hash->stack_size = temp; | |
1800 | } | |
1801 | ||
1802 | /* If the total stack to be allocated by the call instruction is more | |
1803 | than 255 bytes, then we can't remove the stack adjustment by using | |
1804 | "call" (we might still be able to remove the "movm" instruction. */ | |
1805 | if (hash->stack_size + hash->movm_stack_size > 255) | |
1806 | hash->stack_size = 0; | |
1807 | } | |
1808 | ||
1809 | /* Delete some bytes from a section while relaxing. */ | |
1810 | ||
1811 | static bfd_boolean | |
1812 | mn10300_elf_relax_delete_bytes (bfd *abfd, | |
1813 | asection *sec, | |
1814 | bfd_vma addr, | |
1815 | int count) | |
1816 | { | |
1817 | Elf_Internal_Shdr *symtab_hdr; | |
1818 | unsigned int sec_shndx; | |
1819 | bfd_byte *contents; | |
1820 | Elf_Internal_Rela *irel, *irelend; | |
1821 | Elf_Internal_Rela *irelalign; | |
1822 | bfd_vma toaddr; | |
1823 | Elf_Internal_Sym *isym, *isymend; | |
1824 | struct elf_link_hash_entry **sym_hashes; | |
1825 | struct elf_link_hash_entry **end_hashes; | |
1826 | unsigned int symcount; | |
1827 | ||
1828 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1829 | ||
1830 | contents = elf_section_data (sec)->this_hdr.contents; | |
1831 | ||
603b7257 NC |
1832 | irelalign = NULL; |
1833 | toaddr = sec->size; | |
1834 | ||
1835 | irel = elf_section_data (sec)->relocs; | |
1836 | irelend = irel + sec->reloc_count; | |
1837 | ||
cf4a529b NC |
1838 | if (sec->reloc_count > 0) |
1839 | { | |
1840 | /* If there is an align reloc at the end of the section ignore it. | |
1841 | GAS creates these relocs for reasons of its own, and they just | |
1842 | serve to keep the section artifically inflated. */ | |
1843 | if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN) | |
1844 | --irelend; | |
569006e5 | 1845 | |
cf4a529b | 1846 | /* The deletion must stop at the next ALIGN reloc for an aligment |
b5f5fd96 NC |
1847 | power larger than, or not a multiple of, the number of bytes we |
1848 | are deleting. */ | |
cf4a529b | 1849 | for (; irel < irelend; irel++) |
b5f5fd96 NC |
1850 | { |
1851 | int alignment = 1 << irel->r_addend; | |
1852 | ||
1853 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
1854 | && irel->r_offset > addr | |
1855 | && irel->r_offset < toaddr | |
1856 | && (count < alignment | |
1857 | || alignment % count != 0)) | |
1858 | { | |
1859 | irelalign = irel; | |
1860 | toaddr = irel->r_offset; | |
1861 | break; | |
1862 | } | |
1863 | } | |
cf4a529b | 1864 | } |
569006e5 | 1865 | |
603b7257 NC |
1866 | /* Actually delete the bytes. */ |
1867 | memmove (contents + addr, contents + addr + count, | |
1868 | (size_t) (toaddr - addr - count)); | |
569006e5 NC |
1869 | |
1870 | /* Adjust the section's size if we are shrinking it, or else | |
1871 | pad the bytes between the end of the shrunken region and | |
1872 | the start of the next region with NOP codes. */ | |
1873 | if (irelalign == NULL) | |
1874 | { | |
1875 | sec->size -= count; | |
1876 | /* Include symbols at the end of the section, but | |
1877 | not at the end of a sub-region of the section. */ | |
1878 | toaddr ++; | |
1879 | } | |
1880 | else | |
1881 | { | |
1882 | int i; | |
1883 | ||
1884 | #define NOP_OPCODE 0xcb | |
1885 | ||
1886 | for (i = 0; i < count; i ++) | |
1887 | bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); | |
1888 | } | |
603b7257 NC |
1889 | |
1890 | /* Adjust all the relocs. */ | |
1891 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1892 | { | |
1893 | /* Get the new reloc address. */ | |
1894 | if ((irel->r_offset > addr | |
b5f5fd96 NC |
1895 | && irel->r_offset < toaddr) |
1896 | || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN | |
1897 | && irel->r_offset == toaddr)) | |
603b7257 NC |
1898 | irel->r_offset -= count; |
1899 | } | |
1900 | ||
b5f5fd96 NC |
1901 | /* Adjust the local symbols in the section, reducing their value |
1902 | by the number of bytes deleted. Note - symbols within the deleted | |
1903 | region are moved to the address of the start of the region, which | |
1904 | actually means that they will address the byte beyond the end of | |
1905 | the region once the deletion has been completed. */ | |
603b7257 NC |
1906 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1907 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1908 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1909 | { | |
1910 | if (isym->st_shndx == sec_shndx | |
1911 | && isym->st_value > addr | |
569006e5 | 1912 | && isym->st_value < toaddr) |
b5f5fd96 NC |
1913 | { |
1914 | if (isym->st_value < addr + count) | |
1915 | isym->st_value = addr; | |
1916 | else | |
1917 | isym->st_value -= count; | |
1918 | } | |
bfff1642 NC |
1919 | /* Adjust the function symbol's size as well. */ |
1920 | else if (isym->st_shndx == sec_shndx | |
1921 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC | |
1922 | && isym->st_value + isym->st_size > addr | |
569006e5 | 1923 | && isym->st_value + isym->st_size < toaddr) |
bfff1642 | 1924 | isym->st_size -= count; |
603b7257 NC |
1925 | } |
1926 | ||
1927 | /* Now adjust the global symbols defined in this section. */ | |
1928 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1929 | - symtab_hdr->sh_info); | |
1930 | sym_hashes = elf_sym_hashes (abfd); | |
1931 | end_hashes = sym_hashes + symcount; | |
1932 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1933 | { | |
1934 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1935 | ||
1936 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1937 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1938 | && sym_hash->root.u.def.section == sec | |
1939 | && sym_hash->root.u.def.value > addr | |
569006e5 | 1940 | && sym_hash->root.u.def.value < toaddr) |
b5f5fd96 NC |
1941 | { |
1942 | if (sym_hash->root.u.def.value < addr + count) | |
1943 | sym_hash->root.u.def.value = addr; | |
1944 | else | |
1945 | sym_hash->root.u.def.value -= count; | |
1946 | } | |
bfff1642 NC |
1947 | /* Adjust the function symbol's size as well. */ |
1948 | else if (sym_hash->root.type == bfd_link_hash_defined | |
1949 | && sym_hash->root.u.def.section == sec | |
1950 | && sym_hash->type == STT_FUNC | |
1951 | && sym_hash->root.u.def.value + sym_hash->size > addr | |
569006e5 | 1952 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) |
bfff1642 | 1953 | sym_hash->size -= count; |
603b7257 NC |
1954 | } |
1955 | ||
b5f5fd96 NC |
1956 | /* See if we can move the ALIGN reloc forward. |
1957 | We have adjusted r_offset for it already. */ | |
1958 | if (irelalign != NULL) | |
1959 | { | |
1960 | bfd_vma alignto, alignaddr; | |
1961 | ||
1962 | if ((int) irelalign->r_addend > 0) | |
1963 | { | |
1964 | /* This is the old address. */ | |
1965 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); | |
1966 | /* This is where the align points to now. */ | |
1967 | alignaddr = BFD_ALIGN (irelalign->r_offset, | |
1968 | 1 << irelalign->r_addend); | |
1969 | if (alignaddr < alignto) | |
1970 | /* Tail recursion. */ | |
1971 | return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr, | |
1972 | (int) (alignto - alignaddr)); | |
1973 | } | |
1974 | } | |
1975 | ||
603b7257 NC |
1976 | return TRUE; |
1977 | } | |
1978 | ||
1979 | /* Return TRUE if a symbol exists at the given address, else return | |
1980 | FALSE. */ | |
1981 | ||
1982 | static bfd_boolean | |
1983 | mn10300_elf_symbol_address_p (bfd *abfd, | |
1984 | asection *sec, | |
1985 | Elf_Internal_Sym *isym, | |
1986 | bfd_vma addr) | |
1987 | { | |
1988 | Elf_Internal_Shdr *symtab_hdr; | |
1989 | unsigned int sec_shndx; | |
1990 | Elf_Internal_Sym *isymend; | |
1991 | struct elf_link_hash_entry **sym_hashes; | |
1992 | struct elf_link_hash_entry **end_hashes; | |
1993 | unsigned int symcount; | |
1994 | ||
1995 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1996 | ||
1997 | /* Examine all the symbols. */ | |
1998 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1999 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2000 | if (isym->st_shndx == sec_shndx | |
2001 | && isym->st_value == addr) | |
2002 | return TRUE; | |
2003 | ||
2004 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2005 | - symtab_hdr->sh_info); | |
2006 | sym_hashes = elf_sym_hashes (abfd); | |
2007 | end_hashes = sym_hashes + symcount; | |
2008 | for (; sym_hashes < end_hashes; sym_hashes++) | |
2009 | { | |
2010 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
2011 | ||
2012 | if ((sym_hash->root.type == bfd_link_hash_defined | |
2013 | || sym_hash->root.type == bfd_link_hash_defweak) | |
2014 | && sym_hash->root.u.def.section == sec | |
2015 | && sym_hash->root.u.def.value == addr) | |
2016 | return TRUE; | |
2017 | } | |
2018 | ||
2019 | return FALSE; | |
2020 | } | |
eb13e63f | 2021 | |
252b5132 RH |
2022 | /* This function handles relaxing for the mn10300. |
2023 | ||
4cc11e76 | 2024 | There are quite a few relaxing opportunities available on the mn10300: |
252b5132 RH |
2025 | |
2026 | * calls:32 -> calls:16 2 bytes | |
2027 | * call:32 -> call:16 2 bytes | |
2028 | ||
2029 | * call:32 -> calls:32 1 byte | |
2030 | * call:16 -> calls:16 1 byte | |
2031 | * These are done anytime using "calls" would result | |
2032 | in smaller code, or when necessary to preserve the | |
2033 | meaning of the program. | |
2034 | ||
2035 | * call:32 varies | |
2036 | * call:16 | |
2037 | * In some circumstances we can move instructions | |
2038 | from a function prologue into a "call" instruction. | |
2039 | This is only done if the resulting code is no larger | |
2040 | than the original code. | |
2041 | ||
252b5132 RH |
2042 | * jmp:32 -> jmp:16 2 bytes |
2043 | * jmp:16 -> bra:8 1 byte | |
2044 | ||
2045 | * If the previous instruction is a conditional branch | |
2046 | around the jump/bra, we may be able to reverse its condition | |
2047 | and change its target to the jump's target. The jump/bra | |
2048 | can then be deleted. 2 bytes | |
2049 | ||
2050 | * mov abs32 -> mov abs16 1 or 2 bytes | |
2051 | ||
2052 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
2053 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
2054 | ||
2055 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
2056 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
2057 | ||
2058 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
2059 | and somewhat more difficult to support. */ | |
2060 | ||
b34976b6 | 2061 | static bfd_boolean |
603b7257 NC |
2062 | mn10300_elf_relax_section (bfd *abfd, |
2063 | asection *sec, | |
2064 | struct bfd_link_info *link_info, | |
2065 | bfd_boolean *again) | |
252b5132 RH |
2066 | { |
2067 | Elf_Internal_Shdr *symtab_hdr; | |
2068 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
2069 | Elf_Internal_Rela *irel, *irelend; |
2070 | bfd_byte *contents = NULL; | |
6cdc0ccc | 2071 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 2072 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 2073 | asection *section = sec; |
fc91707c | 2074 | bfd_vma align_gap_adjustment; |
252b5132 | 2075 | |
c8a1f254 NS |
2076 | if (link_info->relocatable) |
2077 | (*link_info->callbacks->einfo) | |
2078 | (_("%P%F: --relax and -r may not be used together\n")); | |
2079 | ||
252b5132 | 2080 | /* Assume nothing changes. */ |
b34976b6 | 2081 | *again = FALSE; |
252b5132 RH |
2082 | |
2083 | /* We need a pointer to the mn10300 specific hash table. */ | |
2084 | hash_table = elf32_mn10300_hash_table (link_info); | |
2085 | ||
2086 | /* Initialize fields in each hash table entry the first time through. */ | |
2087 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
2088 | { | |
2089 | bfd *input_bfd; | |
2090 | ||
2091 | /* Iterate over all the input bfds. */ | |
2092 | for (input_bfd = link_info->input_bfds; | |
2093 | input_bfd != NULL; | |
2094 | input_bfd = input_bfd->link_next) | |
2095 | { | |
252b5132 RH |
2096 | /* We're going to need all the symbols for each bfd. */ |
2097 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 2098 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2099 | { |
6cdc0ccc AM |
2100 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2101 | if (isymbuf == NULL) | |
2102 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2103 | symtab_hdr->sh_info, 0, | |
2104 | NULL, NULL, NULL); | |
2105 | if (isymbuf == NULL) | |
010ac81f KH |
2106 | goto error_return; |
2107 | } | |
252b5132 RH |
2108 | |
2109 | /* Iterate over each section in this bfd. */ | |
2110 | for (section = input_bfd->sections; | |
2111 | section != NULL; | |
2112 | section = section->next) | |
2113 | { | |
2114 | struct elf32_mn10300_link_hash_entry *hash; | |
2115 | Elf_Internal_Sym *sym; | |
86033394 | 2116 | asection *sym_sec = NULL; |
252b5132 RH |
2117 | const char *sym_name; |
2118 | char *new_name; | |
252b5132 | 2119 | |
e948afaf | 2120 | /* If there's nothing to do in this section, skip it. */ |
eb13e63f DD |
2121 | if (! ((section->flags & SEC_RELOC) != 0 |
2122 | && section->reloc_count != 0)) | |
2123 | continue; | |
2124 | if ((section->flags & SEC_ALLOC) == 0) | |
e948afaf AO |
2125 | continue; |
2126 | ||
252b5132 RH |
2127 | /* Get cached copy of section contents if it exists. */ |
2128 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2129 | contents = elf_section_data (section)->this_hdr.contents; | |
eea6121a | 2130 | else if (section->size != 0) |
252b5132 RH |
2131 | { |
2132 | /* Go get them off disk. */ | |
eea6121a AM |
2133 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2134 | &contents)) | |
252b5132 RH |
2135 | goto error_return; |
2136 | } | |
2137 | else | |
6cdc0ccc | 2138 | contents = NULL; |
252b5132 RH |
2139 | |
2140 | /* If there aren't any relocs, then there's nothing to do. */ | |
2141 | if ((section->flags & SEC_RELOC) != 0 | |
2142 | && section->reloc_count != 0) | |
2143 | { | |
252b5132 | 2144 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2145 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2146 | NULL, NULL, | |
2147 | link_info->keep_memory); | |
252b5132 RH |
2148 | if (internal_relocs == NULL) |
2149 | goto error_return; | |
252b5132 RH |
2150 | |
2151 | /* Now examine each relocation. */ | |
2152 | irel = internal_relocs; | |
2153 | irelend = irel + section->reloc_count; | |
2154 | for (; irel < irelend; irel++) | |
2155 | { | |
2156 | long r_type; | |
2157 | unsigned long r_index; | |
2158 | unsigned char code; | |
2159 | ||
2160 | r_type = ELF32_R_TYPE (irel->r_info); | |
2161 | r_index = ELF32_R_SYM (irel->r_info); | |
2162 | ||
010ac81f | 2163 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
2164 | goto error_return; |
2165 | ||
2166 | /* We need the name and hash table entry of the target | |
2167 | symbol! */ | |
2168 | hash = NULL; | |
2169 | sym = NULL; | |
2170 | sym_sec = NULL; | |
2171 | ||
2172 | if (r_index < symtab_hdr->sh_info) | |
2173 | { | |
2174 | /* A local symbol. */ | |
6cdc0ccc | 2175 | Elf_Internal_Sym *isym; |
dc810e39 AM |
2176 | struct elf_link_hash_table *elftab; |
2177 | bfd_size_type amt; | |
252b5132 | 2178 | |
6cdc0ccc AM |
2179 | isym = isymbuf + r_index; |
2180 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2181 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2182 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2183 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2184 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2185 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2186 | else |
2187 | sym_sec | |
2188 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2189 | isym->st_shndx); |
a7c10850 | 2190 | |
9ad5cbcf AM |
2191 | sym_name |
2192 | = bfd_elf_string_from_elf_section (input_bfd, | |
2193 | (symtab_hdr | |
2194 | ->sh_link), | |
6cdc0ccc | 2195 | isym->st_name); |
252b5132 RH |
2196 | |
2197 | /* If it isn't a function, then we don't care | |
2198 | about it. */ | |
6cdc0ccc | 2199 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
2200 | continue; |
2201 | ||
2202 | /* Tack on an ID so we can uniquely identify this | |
2203 | local symbol in the global hash table. */ | |
dc810e39 AM |
2204 | amt = strlen (sym_name) + 10; |
2205 | new_name = bfd_malloc (amt); | |
bfff1642 | 2206 | if (new_name == NULL) |
252b5132 RH |
2207 | goto error_return; |
2208 | ||
f60ca5e3 | 2209 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2210 | sym_name = new_name; |
2211 | ||
dc810e39 AM |
2212 | elftab = &hash_table->static_hash_table->root; |
2213 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2214 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2215 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2216 | free (new_name); |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | r_index -= symtab_hdr->sh_info; | |
2221 | hash = (struct elf32_mn10300_link_hash_entry *) | |
2222 | elf_sym_hashes (input_bfd)[r_index]; | |
2223 | } | |
2224 | ||
eb13e63f DD |
2225 | sym_name = hash->root.root.root.string; |
2226 | if ((section->flags & SEC_CODE) != 0) | |
2227 | { | |
2228 | /* If this is not a "call" instruction, then we | |
2229 | should convert "call" instructions to "calls" | |
2230 | instructions. */ | |
2231 | code = bfd_get_8 (input_bfd, | |
2232 | contents + irel->r_offset - 1); | |
2233 | if (code != 0xdd && code != 0xcd) | |
2234 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2235 | } | |
252b5132 | 2236 | |
6cdc0ccc AM |
2237 | /* If this is a jump/call, then bump the |
2238 | direct_calls counter. Else force "call" to | |
2239 | "calls" conversions. */ | |
252b5132 | 2240 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
2241 | || r_type == R_MN10300_PLT32 |
2242 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
2243 | || r_type == R_MN10300_PCREL16) |
2244 | hash->direct_calls++; | |
2245 | else | |
2246 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | /* Now look at the actual contents to get the stack size, | |
2251 | and a list of what registers were saved in the prologue | |
2252 | (ie movm_args). */ | |
2253 | if ((section->flags & SEC_CODE) != 0) | |
2254 | { | |
6cdc0ccc | 2255 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 2256 | unsigned int sec_shndx; |
6cdc0ccc AM |
2257 | struct elf_link_hash_entry **hashes; |
2258 | struct elf_link_hash_entry **end_hashes; | |
2259 | unsigned int symcount; | |
252b5132 | 2260 | |
9ad5cbcf AM |
2261 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2262 | section); | |
252b5132 | 2263 | |
1055df0f AO |
2264 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2265 | - symtab_hdr->sh_info); | |
2266 | hashes = elf_sym_hashes (input_bfd); | |
2267 | end_hashes = hashes + symcount; | |
2268 | ||
252b5132 RH |
2269 | /* Look at each function defined in this section and |
2270 | update info for that function. */ | |
6cdc0ccc AM |
2271 | isymend = isymbuf + symtab_hdr->sh_info; |
2272 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2273 | { |
6cdc0ccc AM |
2274 | if (isym->st_shndx == sec_shndx |
2275 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 2276 | { |
dc810e39 AM |
2277 | struct elf_link_hash_table *elftab; |
2278 | bfd_size_type amt; | |
1055df0f AO |
2279 | struct elf_link_hash_entry **lhashes = hashes; |
2280 | ||
2281 | /* Skip a local symbol if it aliases a | |
2282 | global one. */ | |
2283 | for (; lhashes < end_hashes; lhashes++) | |
2284 | { | |
2285 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; | |
2286 | if ((hash->root.root.type == bfd_link_hash_defined | |
2287 | || hash->root.root.type == bfd_link_hash_defweak) | |
2288 | && hash->root.root.u.def.section == section | |
2289 | && hash->root.type == STT_FUNC | |
2290 | && hash->root.root.u.def.value == isym->st_value) | |
2291 | break; | |
2292 | } | |
2293 | if (lhashes != end_hashes) | |
2294 | continue; | |
dc810e39 | 2295 | |
6cdc0ccc | 2296 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2297 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2298 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2299 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2300 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2301 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2302 | else |
2303 | sym_sec | |
2304 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2305 | isym->st_shndx); |
252b5132 | 2306 | |
dc810e39 AM |
2307 | sym_name = (bfd_elf_string_from_elf_section |
2308 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 2309 | isym->st_name)); |
252b5132 RH |
2310 | |
2311 | /* Tack on an ID so we can uniquely identify this | |
2312 | local symbol in the global hash table. */ | |
dc810e39 AM |
2313 | amt = strlen (sym_name) + 10; |
2314 | new_name = bfd_malloc (amt); | |
bfff1642 | 2315 | if (new_name == NULL) |
252b5132 RH |
2316 | goto error_return; |
2317 | ||
f60ca5e3 | 2318 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2319 | sym_name = new_name; |
2320 | ||
dc810e39 AM |
2321 | elftab = &hash_table->static_hash_table->root; |
2322 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2323 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2324 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2325 | free (new_name); |
2326 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 2327 | isym->st_value, contents); |
eb13e63f | 2328 | hash->value = isym->st_value; |
252b5132 RH |
2329 | } |
2330 | } | |
2331 | ||
6cdc0ccc | 2332 | for (; hashes < end_hashes; hashes++) |
252b5132 | 2333 | { |
6cdc0ccc | 2334 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2335 | if ((hash->root.root.type == bfd_link_hash_defined |
2336 | || hash->root.root.type == bfd_link_hash_defweak) | |
2337 | && hash->root.root.u.def.section == section | |
9bb351fd | 2338 | && hash->root.type == STT_FUNC) |
252b5132 RH |
2339 | compute_function_info (input_bfd, hash, |
2340 | (hash)->root.root.u.def.value, | |
2341 | contents); | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2346 | if (internal_relocs != NULL |
2347 | && elf_section_data (section)->relocs != internal_relocs) | |
2348 | free (internal_relocs); | |
2349 | internal_relocs = NULL; | |
252b5132 RH |
2350 | |
2351 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2352 | if (contents != NULL |
2353 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2354 | { |
2355 | if (! link_info->keep_memory) | |
6cdc0ccc | 2356 | free (contents); |
252b5132 RH |
2357 | else |
2358 | { | |
2359 | /* Cache the section contents for elf_link_input_bfd. */ | |
2360 | elf_section_data (section)->this_hdr.contents = contents; | |
2361 | } | |
252b5132 | 2362 | } |
6cdc0ccc | 2363 | contents = NULL; |
9ad5cbcf AM |
2364 | } |
2365 | ||
252b5132 | 2366 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2367 | if (isymbuf != NULL |
2368 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2369 | { |
2370 | if (! link_info->keep_memory) | |
6cdc0ccc | 2371 | free (isymbuf); |
252b5132 RH |
2372 | else |
2373 | { | |
2374 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 2375 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 2376 | } |
252b5132 | 2377 | } |
6cdc0ccc | 2378 | isymbuf = NULL; |
252b5132 RH |
2379 | } |
2380 | ||
2381 | /* Now iterate on each symbol in the hash table and perform | |
2382 | the final initialization steps on each. */ | |
2383 | elf32_mn10300_link_hash_traverse (hash_table, | |
2384 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2385 | link_info); |
252b5132 RH |
2386 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2387 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2388 | link_info); |
252b5132 | 2389 | |
eb13e63f DD |
2390 | { |
2391 | /* This section of code collects all our local symbols, sorts | |
2392 | them by value, and looks for multiple symbols referring to | |
2393 | the same address. For those symbols, the flags are merged. | |
2394 | At this point, the only flag that can be set is | |
2395 | MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags | |
2396 | together. */ | |
2397 | int static_count = 0, i; | |
2398 | struct elf32_mn10300_link_hash_entry **entries; | |
2399 | struct elf32_mn10300_link_hash_entry **ptr; | |
2400 | ||
2401 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2402 | elf32_mn10300_count_hash_table_entries, | |
2403 | &static_count); | |
2404 | ||
603b7257 | 2405 | entries = bfd_malloc (static_count * sizeof (* ptr)); |
eb13e63f DD |
2406 | |
2407 | ptr = entries; | |
2408 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2409 | elf32_mn10300_list_hash_table_entries, | |
603b7257 | 2410 | & ptr); |
eb13e63f | 2411 | |
603b7257 | 2412 | qsort (entries, static_count, sizeof (entries[0]), sort_by_value); |
eb13e63f | 2413 | |
603b7257 | 2414 | for (i = 0; i < static_count - 1; i++) |
eb13e63f DD |
2415 | if (entries[i]->value && entries[i]->value == entries[i+1]->value) |
2416 | { | |
2417 | int v = entries[i]->flags; | |
2418 | int j; | |
603b7257 NC |
2419 | |
2420 | for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 2421 | v |= entries[j]->flags; |
603b7257 NC |
2422 | |
2423 | for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++) | |
eb13e63f | 2424 | entries[j]->flags = v; |
603b7257 NC |
2425 | |
2426 | i = j - 1; | |
eb13e63f DD |
2427 | } |
2428 | } | |
2429 | ||
252b5132 RH |
2430 | /* All entries in the hash table are fully initialized. */ |
2431 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
2432 | ||
2433 | /* Now that everything has been initialized, go through each | |
2434 | code section and delete any prologue insns which will be | |
2435 | redundant because their operations will be performed by | |
2436 | a "call" instruction. */ | |
2437 | for (input_bfd = link_info->input_bfds; | |
2438 | input_bfd != NULL; | |
2439 | input_bfd = input_bfd->link_next) | |
2440 | { | |
9ad5cbcf | 2441 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 2442 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 2443 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2444 | { |
6cdc0ccc AM |
2445 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2446 | if (isymbuf == NULL) | |
2447 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2448 | symtab_hdr->sh_info, 0, | |
2449 | NULL, NULL, NULL); | |
2450 | if (isymbuf == NULL) | |
9ad5cbcf | 2451 | goto error_return; |
010ac81f | 2452 | } |
252b5132 RH |
2453 | |
2454 | /* Walk over each section in this bfd. */ | |
2455 | for (section = input_bfd->sections; | |
2456 | section != NULL; | |
2457 | section = section->next) | |
2458 | { | |
9ad5cbcf | 2459 | unsigned int sec_shndx; |
6cdc0ccc AM |
2460 | Elf_Internal_Sym *isym, *isymend; |
2461 | struct elf_link_hash_entry **hashes; | |
2462 | struct elf_link_hash_entry **end_hashes; | |
2463 | unsigned int symcount; | |
252b5132 RH |
2464 | |
2465 | /* Skip non-code sections and empty sections. */ | |
eea6121a | 2466 | if ((section->flags & SEC_CODE) == 0 || section->size == 0) |
252b5132 RH |
2467 | continue; |
2468 | ||
2469 | if (section->reloc_count != 0) | |
2470 | { | |
010ac81f | 2471 | /* Get a copy of the native relocations. */ |
603b7257 NC |
2472 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2473 | NULL, NULL, | |
2474 | link_info->keep_memory); | |
010ac81f KH |
2475 | if (internal_relocs == NULL) |
2476 | goto error_return; | |
252b5132 RH |
2477 | } |
2478 | ||
2479 | /* Get cached copy of section contents if it exists. */ | |
2480 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2481 | contents = elf_section_data (section)->this_hdr.contents; | |
2482 | else | |
2483 | { | |
2484 | /* Go get them off disk. */ | |
eea6121a AM |
2485 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2486 | &contents)) | |
252b5132 RH |
2487 | goto error_return; |
2488 | } | |
2489 | ||
9ad5cbcf AM |
2490 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2491 | section); | |
252b5132 RH |
2492 | |
2493 | /* Now look for any function in this section which needs | |
2494 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
2495 | isymend = isymbuf + symtab_hdr->sh_info; |
2496 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2497 | { |
252b5132 | 2498 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 2499 | asection *sym_sec = NULL; |
252b5132 | 2500 | const char *sym_name; |
252b5132 | 2501 | char *new_name; |
dc810e39 AM |
2502 | struct elf_link_hash_table *elftab; |
2503 | bfd_size_type amt; | |
252b5132 | 2504 | |
6cdc0ccc | 2505 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
2506 | continue; |
2507 | ||
6cdc0ccc | 2508 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2509 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2510 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2511 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2512 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2513 | sym_sec = bfd_com_section_ptr; |
86033394 | 2514 | else |
9ad5cbcf | 2515 | sym_sec |
6cdc0ccc | 2516 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 2517 | |
9ad5cbcf AM |
2518 | sym_name |
2519 | = bfd_elf_string_from_elf_section (input_bfd, | |
2520 | symtab_hdr->sh_link, | |
6cdc0ccc | 2521 | isym->st_name); |
252b5132 RH |
2522 | |
2523 | /* Tack on an ID so we can uniquely identify this | |
2524 | local symbol in the global hash table. */ | |
dc810e39 AM |
2525 | amt = strlen (sym_name) + 10; |
2526 | new_name = bfd_malloc (amt); | |
bfff1642 | 2527 | if (new_name == NULL) |
252b5132 | 2528 | goto error_return; |
f60ca5e3 | 2529 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2530 | sym_name = new_name; |
2531 | ||
603b7257 NC |
2532 | elftab = & hash_table->static_hash_table->root; |
2533 | sym_hash = (struct elf32_mn10300_link_hash_entry *) | |
2534 | elf_link_hash_lookup (elftab, sym_name, | |
2535 | FALSE, FALSE, FALSE); | |
252b5132 RH |
2536 | |
2537 | free (new_name); | |
2538 | if (sym_hash == NULL) | |
2539 | continue; | |
2540 | ||
9ad5cbcf AM |
2541 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
2542 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2543 | { |
2544 | int bytes = 0; | |
2545 | ||
2546 | /* Note that we've changed things. */ | |
2547 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2548 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2549 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2550 | |
2551 | /* Count how many bytes we're going to delete. */ | |
2552 | if (sym_hash->movm_args) | |
2553 | bytes += 2; | |
2554 | ||
1a101a42 AM |
2555 | if (sym_hash->stack_size > 0) |
2556 | { | |
2557 | if (sym_hash->stack_size <= 128) | |
2558 | bytes += 3; | |
2559 | else | |
2560 | bytes += 4; | |
2561 | } | |
252b5132 RH |
2562 | |
2563 | /* Note that we've deleted prologue bytes for this | |
2564 | function. */ | |
2565 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2566 | ||
2567 | /* Actually delete the bytes. */ | |
2568 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
2569 | section, | |
6cdc0ccc | 2570 | isym->st_value, |
252b5132 RH |
2571 | bytes)) |
2572 | goto error_return; | |
2573 | ||
2574 | /* Something changed. Not strictly necessary, but | |
2575 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2576 | *again = TRUE; |
252b5132 RH |
2577 | } |
2578 | } | |
2579 | ||
2580 | /* Look for any global functions in this section which | |
2581 | need insns deleted from their prologues. */ | |
6cdc0ccc | 2582 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 2583 | - symtab_hdr->sh_info); |
709e685d | 2584 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2585 | end_hashes = hashes + symcount; |
2586 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2587 | { |
252b5132 RH |
2588 | struct elf32_mn10300_link_hash_entry *sym_hash; |
2589 | ||
6cdc0ccc | 2590 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2591 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
2592 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
2593 | && sym_hash->root.root.u.def.section == section | |
2594 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
2595 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2596 | { |
2597 | int bytes = 0; | |
9ad5cbcf | 2598 | bfd_vma symval; |
252b5132 RH |
2599 | |
2600 | /* Note that we've changed things. */ | |
2601 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2602 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2603 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2604 | |
2605 | /* Count how many bytes we're going to delete. */ | |
2606 | if (sym_hash->movm_args) | |
2607 | bytes += 2; | |
2608 | ||
1a101a42 AM |
2609 | if (sym_hash->stack_size > 0) |
2610 | { | |
2611 | if (sym_hash->stack_size <= 128) | |
2612 | bytes += 3; | |
2613 | else | |
2614 | bytes += 4; | |
2615 | } | |
252b5132 RH |
2616 | |
2617 | /* Note that we've deleted prologue bytes for this | |
2618 | function. */ | |
2619 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2620 | ||
2621 | /* Actually delete the bytes. */ | |
9ad5cbcf | 2622 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
2623 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
2624 | section, | |
9ad5cbcf | 2625 | symval, |
252b5132 RH |
2626 | bytes)) |
2627 | goto error_return; | |
2628 | ||
2629 | /* Something changed. Not strictly necessary, but | |
2630 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2631 | *again = TRUE; |
252b5132 RH |
2632 | } |
2633 | } | |
2634 | ||
2635 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2636 | if (internal_relocs != NULL |
2637 | && elf_section_data (section)->relocs != internal_relocs) | |
2638 | free (internal_relocs); | |
2639 | internal_relocs = NULL; | |
252b5132 RH |
2640 | |
2641 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2642 | if (contents != NULL |
2643 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2644 | { |
2645 | if (! link_info->keep_memory) | |
6cdc0ccc | 2646 | free (contents); |
252b5132 | 2647 | else |
603b7257 NC |
2648 | /* Cache the section contents for elf_link_input_bfd. */ |
2649 | elf_section_data (section)->this_hdr.contents = contents; | |
252b5132 | 2650 | } |
6cdc0ccc | 2651 | contents = NULL; |
9ad5cbcf AM |
2652 | } |
2653 | ||
252b5132 | 2654 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2655 | if (isymbuf != NULL |
2656 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2657 | { |
2658 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
2659 | free (isymbuf); |
2660 | else | |
603b7257 NC |
2661 | /* Cache the symbols for elf_link_input_bfd. */ |
2662 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 2663 | } |
6cdc0ccc | 2664 | isymbuf = NULL; |
252b5132 RH |
2665 | } |
2666 | } | |
2667 | ||
252b5132 RH |
2668 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
2669 | contents = NULL; | |
252b5132 | 2670 | internal_relocs = NULL; |
6cdc0ccc AM |
2671 | isymbuf = NULL; |
2672 | /* For error_return. */ | |
2673 | section = sec; | |
252b5132 | 2674 | |
1049f94e | 2675 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
2676 | this section does not have relocs, or if this is not a |
2677 | code section. */ | |
1049f94e | 2678 | if (link_info->relocatable |
252b5132 RH |
2679 | || (sec->flags & SEC_RELOC) == 0 |
2680 | || sec->reloc_count == 0 | |
2681 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 2682 | return TRUE; |
252b5132 | 2683 | |
252b5132 RH |
2684 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2685 | ||
2686 | /* Get a copy of the native relocations. */ | |
603b7257 NC |
2687 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
2688 | link_info->keep_memory); | |
252b5132 RH |
2689 | if (internal_relocs == NULL) |
2690 | goto error_return; | |
252b5132 | 2691 | |
fc91707c NC |
2692 | /* Scan for worst case alignment gap changes. Note that this logic |
2693 | is not ideal; what we should do is run this scan for every | |
2694 | opcode/address range and adjust accordingly, but that's | |
2695 | expensive. Worst case is that for an alignment of N bytes, we | |
2696 | move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc | |
2697 | all before it. Plus, this still doesn't cover cross-section | |
2698 | jumps with section alignment. */ | |
2699 | irelend = internal_relocs + sec->reloc_count; | |
2700 | align_gap_adjustment = 0; | |
2701 | for (irel = internal_relocs; irel < irelend; irel++) | |
2702 | { | |
2703 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN) | |
2704 | { | |
2705 | bfd_vma adj = 1 << irel->r_addend; | |
2706 | bfd_vma aend = irel->r_offset; | |
2707 | ||
2708 | aend = BFD_ALIGN (aend, 1 << irel->r_addend); | |
e23f1610 | 2709 | adj = 2 * adj - adj - 1; |
fc91707c NC |
2710 | |
2711 | /* Record the biggest adjustmnet. Skip any alignment at the | |
2712 | end of our section. */ | |
2713 | if (align_gap_adjustment < adj | |
2714 | && aend < sec->output_section->vma + sec->output_offset + sec->size) | |
2715 | align_gap_adjustment = adj; | |
2716 | } | |
2717 | } | |
2718 | ||
252b5132 RH |
2719 | /* Walk through them looking for relaxing opportunities. */ |
2720 | irelend = internal_relocs + sec->reloc_count; | |
2721 | for (irel = internal_relocs; irel < irelend; irel++) | |
2722 | { | |
2723 | bfd_vma symval; | |
605d18d4 DD |
2724 | bfd_signed_vma jump_offset; |
2725 | asection *sym_sec = NULL; | |
252b5132 RH |
2726 | struct elf32_mn10300_link_hash_entry *h = NULL; |
2727 | ||
2728 | /* If this isn't something that can be relaxed, then ignore | |
2729 | this reloc. */ | |
2730 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
2731 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
2732 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
2733 | continue; | |
2734 | ||
2735 | /* Get the section contents if we haven't done so already. */ | |
2736 | if (contents == NULL) | |
2737 | { | |
2738 | /* Get cached copy if it exists. */ | |
2739 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2740 | contents = elf_section_data (sec)->this_hdr.contents; | |
2741 | else | |
2742 | { | |
2743 | /* Go get them off disk. */ | |
eea6121a | 2744 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2745 | goto error_return; |
2746 | } | |
2747 | } | |
2748 | ||
b34976b6 | 2749 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 2750 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 2751 | { |
6cdc0ccc AM |
2752 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2753 | if (isymbuf == NULL) | |
2754 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2755 | symtab_hdr->sh_info, 0, | |
2756 | NULL, NULL, NULL); | |
2757 | if (isymbuf == NULL) | |
2758 | goto error_return; | |
252b5132 RH |
2759 | } |
2760 | ||
2761 | /* Get the value of the symbol referred to by the reloc. */ | |
2762 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2763 | { | |
6cdc0ccc | 2764 | Elf_Internal_Sym *isym; |
252b5132 RH |
2765 | const char *sym_name; |
2766 | char *new_name; | |
2767 | ||
2768 | /* A local symbol. */ | |
6cdc0ccc AM |
2769 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2770 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2771 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2772 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2773 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2774 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2775 | sym_sec = bfd_com_section_ptr; |
86033394 | 2776 | else |
6cdc0ccc | 2777 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 2778 | |
252b5132 RH |
2779 | sym_name = bfd_elf_string_from_elf_section (abfd, |
2780 | symtab_hdr->sh_link, | |
6cdc0ccc | 2781 | isym->st_name); |
252b5132 | 2782 | |
dd90f1b2 | 2783 | if ((sym_sec->flags & SEC_MERGE) |
dd90f1b2 DD |
2784 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
2785 | { | |
281153f3 NC |
2786 | symval = isym->st_value + irel->r_addend; |
2787 | symval = _bfd_merged_section_offset (abfd, & sym_sec, | |
2788 | elf_section_data (sym_sec)->sec_info, | |
2789 | symval); | |
2790 | symval += sym_sec->output_section->vma + sym_sec->output_offset - irel->r_addend; | |
dd90f1b2 DD |
2791 | } |
2792 | else | |
bfff1642 NC |
2793 | symval = (isym->st_value |
2794 | + sym_sec->output_section->vma | |
2795 | + sym_sec->output_offset); | |
603b7257 | 2796 | |
252b5132 RH |
2797 | /* Tack on an ID so we can uniquely identify this |
2798 | local symbol in the global hash table. */ | |
dc810e39 | 2799 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
bfff1642 | 2800 | if (new_name == NULL) |
252b5132 | 2801 | goto error_return; |
f60ca5e3 | 2802 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2803 | sym_name = new_name; |
2804 | ||
2805 | h = (struct elf32_mn10300_link_hash_entry *) | |
2806 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 2807 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
2808 | free (new_name); |
2809 | } | |
2810 | else | |
2811 | { | |
2812 | unsigned long indx; | |
2813 | ||
2814 | /* An external symbol. */ | |
2815 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2816 | h = (struct elf32_mn10300_link_hash_entry *) | |
2817 | (elf_sym_hashes (abfd)[indx]); | |
2818 | BFD_ASSERT (h != NULL); | |
2819 | if (h->root.root.type != bfd_link_hash_defined | |
2820 | && h->root.root.type != bfd_link_hash_defweak) | |
603b7257 NC |
2821 | /* This appears to be a reference to an undefined |
2822 | symbol. Just ignore it--it will be caught by the | |
2823 | regular reloc processing. */ | |
2824 | continue; | |
252b5132 | 2825 | |
bfff1642 NC |
2826 | /* Check for a reference to a discarded symbol and ignore it. */ |
2827 | if (h->root.root.u.def.section->output_section == NULL) | |
2828 | continue; | |
2829 | ||
605d18d4 DD |
2830 | sym_sec = h->root.root.u.def.section->output_section; |
2831 | ||
252b5132 RH |
2832 | symval = (h->root.root.u.def.value |
2833 | + h->root.root.u.def.section->output_section->vma | |
2834 | + h->root.root.u.def.section->output_offset); | |
2835 | } | |
2836 | ||
2837 | /* For simplicity of coding, we are going to modify the section | |
2838 | contents, the section relocs, and the BFD symbol table. We | |
2839 | must tell the rest of the code not to free up this | |
2840 | information. It would be possible to instead create a table | |
2841 | of changes which have to be made, as is done in coff-mips.c; | |
2842 | that would be more work, but would require less memory when | |
2843 | the linker is run. */ | |
2844 | ||
2845 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
2846 | branch/call, also deal with "call" -> "calls" conversions and | |
2847 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
2848 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
2849 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
2850 | { |
2851 | bfd_vma value = symval; | |
2852 | ||
03a12831 AO |
2853 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
2854 | && h != NULL | |
2855 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2856 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2857 | && h->root.plt.offset != (bfd_vma) -1) | |
2858 | { | |
2859 | asection * splt; | |
2860 | ||
2861 | splt = bfd_get_section_by_name (elf_hash_table (link_info) | |
2862 | ->dynobj, ".plt"); | |
3b36f7e6 | 2863 | |
03a12831 AO |
2864 | value = ((splt->output_section->vma |
2865 | + splt->output_offset | |
2866 | + h->root.plt.offset) | |
2867 | - (sec->output_section->vma | |
2868 | + sec->output_offset | |
2869 | + irel->r_offset)); | |
2870 | } | |
2871 | ||
252b5132 RH |
2872 | /* If we've got a "call" instruction that needs to be turned |
2873 | into a "calls" instruction, do so now. It saves a byte. */ | |
2874 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2875 | { | |
2876 | unsigned char code; | |
2877 | ||
2878 | /* Get the opcode. */ | |
2879 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2880 | ||
2881 | /* Make sure we're working with a "call" instruction! */ | |
2882 | if (code == 0xdd) | |
2883 | { | |
2884 | /* Note that we've changed the relocs, section contents, | |
2885 | etc. */ | |
2886 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2887 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2888 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2889 | |
2890 | /* Fix the opcode. */ | |
2891 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
2892 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2893 | ||
2894 | /* Fix irel->r_offset and irel->r_addend. */ | |
2895 | irel->r_offset += 1; | |
2896 | irel->r_addend += 1; | |
2897 | ||
2898 | /* Delete one byte of data. */ | |
2899 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2900 | irel->r_offset + 3, 1)) | |
2901 | goto error_return; | |
2902 | ||
2903 | /* That will change things, so, we should relax again. | |
2904 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2905 | *again = TRUE; |
252b5132 RH |
2906 | } |
2907 | } | |
2908 | else if (h) | |
2909 | { | |
2910 | /* We've got a "call" instruction which needs some data | |
2911 | from target function filled in. */ | |
2912 | unsigned char code; | |
2913 | ||
2914 | /* Get the opcode. */ | |
2915 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2916 | ||
2917 | /* Insert data from the target function into the "call" | |
2918 | instruction if needed. */ | |
2919 | if (code == 0xdd) | |
2920 | { | |
2921 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
2922 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2923 | contents + irel->r_offset + 5); | |
2924 | } | |
2925 | } | |
2926 | ||
2927 | /* Deal with pc-relative gunk. */ | |
2928 | value -= (sec->output_section->vma + sec->output_offset); | |
2929 | value -= irel->r_offset; | |
2930 | value += irel->r_addend; | |
2931 | ||
2932 | /* See if the value will fit in 16 bits, note the high value is | |
2933 | 0x7fff + 2 as the target will be two bytes closer if we are | |
605d18d4 DD |
2934 | able to relax, if it's in the same section. */ |
2935 | if (sec->output_section == sym_sec->output_section) | |
2936 | jump_offset = 0x8001; | |
2937 | else | |
2938 | jump_offset = 0x7fff; | |
2939 | ||
fc91707c NC |
2940 | /* Account for jumps across alignment boundaries using |
2941 | align_gap_adjustment. */ | |
605d18d4 | 2942 | if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment |
fc91707c | 2943 | && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment)) |
252b5132 RH |
2944 | { |
2945 | unsigned char code; | |
2946 | ||
2947 | /* Get the opcode. */ | |
2948 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2949 | ||
2950 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
2951 | continue; | |
2952 | ||
2953 | /* Note that we've changed the relocs, section contents, etc. */ | |
2954 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2955 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2956 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2957 | |
2958 | /* Fix the opcode. */ | |
2959 | if (code == 0xdc) | |
2960 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
2961 | else if (code == 0xdd) | |
2962 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
2963 | else if (code == 0xff) | |
2964 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2965 | ||
2966 | /* Fix the relocation's type. */ | |
2967 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2968 | (ELF32_R_TYPE (irel->r_info) |
2969 | == (int) R_MN10300_PLT32) | |
2970 | ? R_MN10300_PLT16 : | |
252b5132 RH |
2971 | R_MN10300_PCREL16); |
2972 | ||
2973 | /* Delete two bytes of data. */ | |
2974 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2975 | irel->r_offset + 1, 2)) | |
2976 | goto error_return; | |
2977 | ||
2978 | /* That will change things, so, we should relax again. | |
2979 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2980 | *again = TRUE; |
252b5132 RH |
2981 | } |
2982 | } | |
2983 | ||
2984 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
2985 | branch. */ | |
2986 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
2987 | { | |
2988 | bfd_vma value = symval; | |
2989 | ||
2990 | /* If we've got a "call" instruction that needs to be turned | |
2991 | into a "calls" instruction, do so now. It saves a byte. */ | |
2992 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2993 | { | |
2994 | unsigned char code; | |
2995 | ||
2996 | /* Get the opcode. */ | |
2997 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2998 | ||
2999 | /* Make sure we're working with a "call" instruction! */ | |
3000 | if (code == 0xcd) | |
3001 | { | |
3002 | /* Note that we've changed the relocs, section contents, | |
3003 | etc. */ | |
3004 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3005 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3006 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3007 | |
3008 | /* Fix the opcode. */ | |
3009 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
3010 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
3011 | ||
3012 | /* Fix irel->r_offset and irel->r_addend. */ | |
3013 | irel->r_offset += 1; | |
3014 | irel->r_addend += 1; | |
3015 | ||
3016 | /* Delete one byte of data. */ | |
3017 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3018 | irel->r_offset + 1, 1)) | |
3019 | goto error_return; | |
3020 | ||
3021 | /* That will change things, so, we should relax again. | |
3022 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3023 | *again = TRUE; |
252b5132 RH |
3024 | } |
3025 | } | |
3026 | else if (h) | |
3027 | { | |
3028 | unsigned char code; | |
3029 | ||
3030 | /* Get the opcode. */ | |
3031 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3032 | ||
3033 | /* Insert data from the target function into the "call" | |
3034 | instruction if needed. */ | |
3035 | if (code == 0xcd) | |
3036 | { | |
3037 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
3038 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
3039 | contents + irel->r_offset + 3); | |
3040 | } | |
3041 | } | |
3042 | ||
3043 | /* Deal with pc-relative gunk. */ | |
3044 | value -= (sec->output_section->vma + sec->output_offset); | |
3045 | value -= irel->r_offset; | |
3046 | value += irel->r_addend; | |
3047 | ||
3048 | /* See if the value will fit in 8 bits, note the high value is | |
3049 | 0x7f + 1 as the target will be one bytes closer if we are | |
3050 | able to relax. */ | |
010ac81f | 3051 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
3052 | { |
3053 | unsigned char code; | |
3054 | ||
3055 | /* Get the opcode. */ | |
3056 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3057 | ||
3058 | if (code != 0xcc) | |
3059 | continue; | |
3060 | ||
3061 | /* Note that we've changed the relocs, section contents, etc. */ | |
3062 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3063 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3064 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3065 | |
3066 | /* Fix the opcode. */ | |
3067 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
3068 | ||
3069 | /* Fix the relocation's type. */ | |
3070 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3071 | R_MN10300_PCREL8); | |
3072 | ||
3073 | /* Delete one byte of data. */ | |
3074 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3075 | irel->r_offset + 1, 1)) | |
3076 | goto error_return; | |
3077 | ||
3078 | /* That will change things, so, we should relax again. | |
3079 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3080 | *again = TRUE; |
252b5132 RH |
3081 | } |
3082 | } | |
3083 | ||
3084 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
3085 | which immediately follows a conditional 8 bit pc-relative | |
3086 | branch around the unconditional branch. | |
3087 | ||
3088 | original: new: | |
3089 | bCC lab1 bCC' lab2 | |
3090 | bra lab2 | |
3091 | lab1: lab1: | |
3092 | ||
252b5132 RH |
3093 | This happens when the bCC can't reach lab2 at assembly time, |
3094 | but due to other relaxations it can reach at link time. */ | |
3095 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
3096 | { | |
3097 | Elf_Internal_Rela *nrel; | |
3098 | bfd_vma value = symval; | |
3099 | unsigned char code; | |
3100 | ||
3101 | /* Deal with pc-relative gunk. */ | |
3102 | value -= (sec->output_section->vma + sec->output_offset); | |
3103 | value -= irel->r_offset; | |
3104 | value += irel->r_addend; | |
3105 | ||
3106 | /* Do nothing if this reloc is the last byte in the section. */ | |
eea6121a | 3107 | if (irel->r_offset == sec->size) |
252b5132 RH |
3108 | continue; |
3109 | ||
3110 | /* See if the next instruction is an unconditional pc-relative | |
3111 | branch, more often than not this test will fail, so we | |
3112 | test it first to speed things up. */ | |
3113 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
3114 | if (code != 0xca) | |
3115 | continue; | |
3116 | ||
3117 | /* Also make sure the next relocation applies to the next | |
3118 | instruction and that it's a pc-relative 8 bit branch. */ | |
3119 | nrel = irel + 1; | |
3120 | if (nrel == irelend | |
3121 | || irel->r_offset + 2 != nrel->r_offset | |
3122 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
3123 | continue; | |
3124 | ||
3125 | /* Make sure our destination immediately follows the | |
3126 | unconditional branch. */ | |
3127 | if (symval != (sec->output_section->vma + sec->output_offset | |
3128 | + irel->r_offset + 3)) | |
3129 | continue; | |
3130 | ||
3131 | /* Now make sure we are a conditional branch. This may not | |
3132 | be necessary, but why take the chance. | |
3133 | ||
3134 | Note these checks assume that R_MN10300_PCREL8 relocs | |
3135 | only occur on bCC and bCCx insns. If they occured | |
3136 | elsewhere, we'd need to know the start of this insn | |
3137 | for this check to be accurate. */ | |
3138 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3139 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
3140 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
3141 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
3142 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
3143 | && code != 0xea && code != 0xeb) | |
3144 | continue; | |
3145 | ||
3146 | /* We also have to be sure there is no symbol/label | |
3147 | at the unconditional branch. */ | |
6cdc0ccc AM |
3148 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
3149 | irel->r_offset + 1)) | |
252b5132 RH |
3150 | continue; |
3151 | ||
3152 | /* Note that we've changed the relocs, section contents, etc. */ | |
3153 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3154 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3155 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3156 | |
3157 | /* Reverse the condition of the first branch. */ | |
3158 | switch (code) | |
3159 | { | |
010ac81f KH |
3160 | case 0xc8: |
3161 | code = 0xc9; | |
3162 | break; | |
3163 | case 0xc9: | |
3164 | code = 0xc8; | |
3165 | break; | |
3166 | case 0xc0: | |
3167 | code = 0xc2; | |
3168 | break; | |
3169 | case 0xc2: | |
3170 | code = 0xc0; | |
3171 | break; | |
3172 | case 0xc3: | |
3173 | code = 0xc1; | |
3174 | break; | |
3175 | case 0xc1: | |
3176 | code = 0xc3; | |
3177 | break; | |
3178 | case 0xc4: | |
3179 | code = 0xc6; | |
3180 | break; | |
3181 | case 0xc6: | |
3182 | code = 0xc4; | |
3183 | break; | |
3184 | case 0xc7: | |
3185 | code = 0xc5; | |
3186 | break; | |
3187 | case 0xc5: | |
3188 | code = 0xc7; | |
3189 | break; | |
3190 | case 0xe8: | |
3191 | code = 0xe9; | |
3192 | break; | |
3193 | case 0x9d: | |
3194 | code = 0xe8; | |
3195 | break; | |
3196 | case 0xea: | |
3197 | code = 0xeb; | |
3198 | break; | |
3199 | case 0xeb: | |
3200 | code = 0xea; | |
3201 | break; | |
252b5132 RH |
3202 | } |
3203 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3204 | ||
3205 | /* Set the reloc type and symbol for the first branch | |
3206 | from the second branch. */ | |
3207 | irel->r_info = nrel->r_info; | |
3208 | ||
3209 | /* Make the reloc for the second branch a null reloc. */ | |
3210 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
3211 | R_MN10300_NONE); | |
3212 | ||
3213 | /* Delete two bytes of data. */ | |
3214 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3215 | irel->r_offset + 1, 2)) | |
3216 | goto error_return; | |
3217 | ||
3218 | /* That will change things, so, we should relax again. | |
3219 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3220 | *again = TRUE; |
252b5132 RH |
3221 | } |
3222 | ||
31f8dc8f JL |
3223 | /* Try to turn a 24 immediate, displacement or absolute address |
3224 | into a 8 immediate, displacement or absolute address. */ | |
3225 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
3226 | { | |
3227 | bfd_vma value = symval; | |
3228 | value += irel->r_addend; | |
3229 | ||
3230 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 3231 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
3232 | { |
3233 | unsigned char code; | |
3234 | ||
3235 | /* AM33 insns which have 24 operands are 6 bytes long and | |
3236 | will have 0xfd as the first byte. */ | |
3237 | ||
3238 | /* Get the first opcode. */ | |
3239 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3240 | ||
3241 | if (code == 0xfd) | |
3242 | { | |
010ac81f KH |
3243 | /* Get the second opcode. */ |
3244 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3245 | |
3246 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3247 | equivalent instructions exists. */ | |
3b36f7e6 | 3248 | if (code != 0x6b && code != 0x7b |
31f8dc8f JL |
3249 | && code != 0x8b && code != 0x9b |
3250 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
3251 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3252 | || (code & 0x0f) == 0x0e)) | |
3253 | { | |
3254 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3255 | move the value out of high mem and thus not fit |
3256 | in a signed 8bit value. This is currently over | |
3257 | conservative. */ | |
31f8dc8f JL |
3258 | if ((value & 0x80) == 0) |
3259 | { | |
3260 | /* Note that we've changed the relocation contents, | |
3261 | etc. */ | |
3262 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3263 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3264 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3265 | |
3266 | /* Fix the opcode. */ | |
3267 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
3268 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3269 | ||
3270 | /* Fix the relocation's type. */ | |
010ac81f KH |
3271 | irel->r_info = |
3272 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
3273 | R_MN10300_8); | |
31f8dc8f JL |
3274 | |
3275 | /* Delete two bytes of data. */ | |
3276 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3277 | irel->r_offset + 1, 2)) | |
3278 | goto error_return; | |
3279 | ||
3280 | /* That will change things, so, we should relax | |
3281 | again. Note that this is not required, and it | |
010ac81f | 3282 | may be slow. */ |
b34976b6 | 3283 | *again = TRUE; |
31f8dc8f JL |
3284 | break; |
3285 | } | |
3286 | } | |
31f8dc8f JL |
3287 | } |
3288 | } | |
3289 | } | |
252b5132 RH |
3290 | |
3291 | /* Try to turn a 32bit immediate, displacement or absolute address | |
3292 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
3293 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
3294 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
eb13e63f | 3295 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
252b5132 RH |
3296 | { |
3297 | bfd_vma value = symval; | |
03a12831 AO |
3298 | |
3299 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
3300 | { | |
3301 | asection * sgot; | |
3302 | ||
3303 | sgot = bfd_get_section_by_name (elf_hash_table (link_info) | |
3304 | ->dynobj, ".got"); | |
3305 | ||
3306 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) | |
3307 | { | |
3308 | value = sgot->output_offset; | |
3309 | ||
3310 | if (h) | |
3311 | value += h->root.got.offset; | |
3312 | else | |
3313 | value += (elf_local_got_offsets | |
3314 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
3315 | } | |
3316 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
3317 | value -= sgot->output_section->vma; | |
3318 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
3319 | value = (sgot->output_section->vma | |
3320 | - (sec->output_section->vma | |
3321 | + sec->output_offset | |
3322 | + irel->r_offset)); | |
3323 | else | |
3324 | abort (); | |
3325 | } | |
3326 | ||
252b5132 RH |
3327 | value += irel->r_addend; |
3328 | ||
31f8dc8f JL |
3329 | /* See if the value will fit in 24 bits. |
3330 | We allow any 16bit match here. We prune those we can't | |
3331 | handle below. */ | |
010ac81f | 3332 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
3333 | { |
3334 | unsigned char code; | |
3335 | ||
3336 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
3337 | will have 0xfe as the first byte. */ | |
3338 | ||
3339 | /* Get the first opcode. */ | |
3340 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
3341 | ||
3342 | if (code == 0xfe) | |
3343 | { | |
3b36f7e6 AM |
3344 | /* Get the second opcode. */ |
3345 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
3346 | |
3347 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
3348 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
3349 | equivalent instructions exists. */ | |
010ac81f | 3350 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 3351 | && code != 0x8b && code != 0x9b |
03a12831 AO |
3352 | && (ELF32_R_TYPE (irel->r_info) |
3353 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
3354 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3355 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3356 | || (code & 0x0f) == 0x0e)) | |
3357 | { | |
3358 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
3359 | move the value out of high mem and thus not fit |
3360 | in a signed 16bit value. This is currently over | |
3361 | conservative. */ | |
31f8dc8f JL |
3362 | if ((value & 0x8000) == 0) |
3363 | { | |
3364 | /* Note that we've changed the relocation contents, | |
3365 | etc. */ | |
3366 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3367 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3368 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3369 | |
3370 | /* Fix the opcode. */ | |
3371 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
3372 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3373 | ||
3374 | /* Fix the relocation's type. */ | |
010ac81f KH |
3375 | irel->r_info = |
3376 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3377 | (ELF32_R_TYPE (irel->r_info) |
3378 | == (int) R_MN10300_GOTOFF32) | |
3379 | ? R_MN10300_GOTOFF24 | |
3380 | : (ELF32_R_TYPE (irel->r_info) | |
3381 | == (int) R_MN10300_GOT32) | |
3382 | ? R_MN10300_GOT24 : | |
010ac81f | 3383 | R_MN10300_24); |
31f8dc8f JL |
3384 | |
3385 | /* Delete one byte of data. */ | |
3386 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3387 | irel->r_offset + 3, 1)) | |
3388 | goto error_return; | |
3389 | ||
3390 | /* That will change things, so, we should relax | |
3391 | again. Note that this is not required, and it | |
010ac81f | 3392 | may be slow. */ |
b34976b6 | 3393 | *again = TRUE; |
31f8dc8f JL |
3394 | break; |
3395 | } | |
3396 | } | |
31f8dc8f JL |
3397 | } |
3398 | } | |
252b5132 RH |
3399 | |
3400 | /* See if the value will fit in 16 bits. | |
3401 | We allow any 16bit match here. We prune those we can't | |
3402 | handle below. */ | |
010ac81f | 3403 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
3404 | { |
3405 | unsigned char code; | |
3406 | ||
3407 | /* Most insns which have 32bit operands are 6 bytes long; | |
3408 | exceptions are pcrel insns and bit insns. | |
3409 | ||
3410 | We handle pcrel insns above. We don't bother trying | |
3411 | to handle the bit insns here. | |
3412 | ||
3413 | The first byte of the remaining insns will be 0xfc. */ | |
3414 | ||
3415 | /* Get the first opcode. */ | |
3416 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
3417 | ||
3418 | if (code != 0xfc) | |
3419 | continue; | |
3420 | ||
3421 | /* Get the second opcode. */ | |
3422 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3423 | ||
3424 | if ((code & 0xf0) < 0x80) | |
3425 | switch (code & 0xf0) | |
3426 | { | |
3427 | /* mov (d32,am),dn -> mov (d32,am),dn | |
3428 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3429 | mov (d32,am),an -> mov (d32,am),an | |
3430 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3431 | movbu (d32,am),dn -> movbu (d32,am),dn | |
3432 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
3433 | movhu (d32,am),dn -> movhu (d32,am),dn | |
3434 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
3435 | case 0x00: | |
3436 | case 0x10: | |
3437 | case 0x20: | |
3438 | case 0x30: | |
3439 | case 0x40: | |
3440 | case 0x50: | |
3441 | case 0x60: | |
3442 | case 0x70: | |
3443 | /* Not safe if the high bit is on as relaxing may | |
3444 | move the value out of high mem and thus not fit | |
3445 | in a signed 16bit value. */ | |
3446 | if (code == 0xcc | |
3447 | && (value & 0x8000)) | |
3448 | continue; | |
3449 | ||
3450 | /* Note that we've changed the relocation contents, etc. */ | |
3451 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3452 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3453 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3454 | |
3455 | /* Fix the opcode. */ | |
3456 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3457 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3458 | ||
3459 | /* Fix the relocation's type. */ | |
3460 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3461 | (ELF32_R_TYPE (irel->r_info) |
3462 | == (int) R_MN10300_GOTOFF32) | |
3463 | ? R_MN10300_GOTOFF16 | |
3464 | : (ELF32_R_TYPE (irel->r_info) | |
3465 | == (int) R_MN10300_GOT32) | |
3466 | ? R_MN10300_GOT16 | |
3467 | : (ELF32_R_TYPE (irel->r_info) | |
3468 | == (int) R_MN10300_GOTPC32) | |
3469 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3470 | R_MN10300_16); |
3471 | ||
3472 | /* Delete two bytes of data. */ | |
3473 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3474 | irel->r_offset + 2, 2)) | |
3475 | goto error_return; | |
3476 | ||
3477 | /* That will change things, so, we should relax again. | |
3478 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3479 | *again = TRUE; |
252b5132 RH |
3480 | break; |
3481 | } | |
3482 | else if ((code & 0xf0) == 0x80 | |
3483 | || (code & 0xf0) == 0x90) | |
3484 | switch (code & 0xf3) | |
3485 | { | |
3486 | /* mov dn,(abs32) -> mov dn,(abs16) | |
3487 | movbu dn,(abs32) -> movbu dn,(abs16) | |
3488 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
3489 | case 0x81: | |
3490 | case 0x82: | |
3491 | case 0x83: | |
3492 | /* Note that we've changed the relocation contents, etc. */ | |
3493 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3494 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3495 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3496 | |
3497 | if ((code & 0xf3) == 0x81) | |
3498 | code = 0x01 + (code & 0x0c); | |
3499 | else if ((code & 0xf3) == 0x82) | |
3500 | code = 0x02 + (code & 0x0c); | |
3501 | else if ((code & 0xf3) == 0x83) | |
3502 | code = 0x03 + (code & 0x0c); | |
3503 | else | |
3504 | abort (); | |
3505 | ||
3506 | /* Fix the opcode. */ | |
3507 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3508 | ||
3509 | /* Fix the relocation's type. */ | |
3510 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3511 | (ELF32_R_TYPE (irel->r_info) |
3512 | == (int) R_MN10300_GOTOFF32) | |
3513 | ? R_MN10300_GOTOFF16 | |
3514 | : (ELF32_R_TYPE (irel->r_info) | |
3515 | == (int) R_MN10300_GOT32) | |
3516 | ? R_MN10300_GOT16 | |
3517 | : (ELF32_R_TYPE (irel->r_info) | |
3518 | == (int) R_MN10300_GOTPC32) | |
3519 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3520 | R_MN10300_16); |
3521 | ||
3522 | /* The opcode got shorter too, so we have to fix the | |
3523 | addend and offset too! */ | |
3524 | irel->r_offset -= 1; | |
3525 | ||
3526 | /* Delete three bytes of data. */ | |
3527 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3528 | irel->r_offset + 1, 3)) | |
3529 | goto error_return; | |
3530 | ||
3531 | /* That will change things, so, we should relax again. | |
3532 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3533 | *again = TRUE; |
252b5132 RH |
3534 | break; |
3535 | ||
3536 | /* mov am,(abs32) -> mov am,(abs16) | |
3537 | mov am,(d32,sp) -> mov am,(d16,sp) | |
3538 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
3539 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
3540 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
3541 | case 0x80: | |
3542 | case 0x90: | |
3543 | case 0x91: | |
3544 | case 0x92: | |
3545 | case 0x93: | |
2a0fa943 AO |
3546 | /* sp-based offsets are zero-extended. */ |
3547 | if (code >= 0x90 && code <= 0x93 | |
bfff1642 | 3548 | && (long) value < 0) |
2a0fa943 AO |
3549 | continue; |
3550 | ||
252b5132 RH |
3551 | /* Note that we've changed the relocation contents, etc. */ |
3552 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3553 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3554 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3555 | |
3556 | /* Fix the opcode. */ | |
3557 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3558 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3559 | ||
3560 | /* Fix the relocation's type. */ | |
3561 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3562 | (ELF32_R_TYPE (irel->r_info) |
3563 | == (int) R_MN10300_GOTOFF32) | |
3564 | ? R_MN10300_GOTOFF16 | |
3565 | : (ELF32_R_TYPE (irel->r_info) | |
3566 | == (int) R_MN10300_GOT32) | |
3567 | ? R_MN10300_GOT16 | |
3568 | : (ELF32_R_TYPE (irel->r_info) | |
3569 | == (int) R_MN10300_GOTPC32) | |
3570 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3571 | R_MN10300_16); |
3572 | ||
3573 | /* Delete two bytes of data. */ | |
3574 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3575 | irel->r_offset + 2, 2)) | |
3576 | goto error_return; | |
3577 | ||
3578 | /* That will change things, so, we should relax again. | |
3579 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3580 | *again = TRUE; |
252b5132 RH |
3581 | break; |
3582 | } | |
3583 | else if ((code & 0xf0) < 0xf0) | |
3584 | switch (code & 0xfc) | |
3585 | { | |
3586 | /* mov imm32,dn -> mov imm16,dn | |
3587 | mov imm32,an -> mov imm16,an | |
3588 | mov (abs32),dn -> mov (abs16),dn | |
3589 | movbu (abs32),dn -> movbu (abs16),dn | |
3590 | movhu (abs32),dn -> movhu (abs16),dn */ | |
3591 | case 0xcc: | |
3592 | case 0xdc: | |
3593 | case 0xa4: | |
3594 | case 0xa8: | |
3595 | case 0xac: | |
3596 | /* Not safe if the high bit is on as relaxing may | |
3597 | move the value out of high mem and thus not fit | |
3598 | in a signed 16bit value. */ | |
3599 | if (code == 0xcc | |
3600 | && (value & 0x8000)) | |
3601 | continue; | |
3602 | ||
2a0fa943 AO |
3603 | /* mov imm16, an zero-extends the immediate. */ |
3604 | if (code == 0xdc | |
bfff1642 | 3605 | && (long) value < 0) |
2a0fa943 AO |
3606 | continue; |
3607 | ||
252b5132 RH |
3608 | /* Note that we've changed the relocation contents, etc. */ |
3609 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3610 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3611 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3612 | |
3613 | if ((code & 0xfc) == 0xcc) | |
3614 | code = 0x2c + (code & 0x03); | |
3615 | else if ((code & 0xfc) == 0xdc) | |
3616 | code = 0x24 + (code & 0x03); | |
3617 | else if ((code & 0xfc) == 0xa4) | |
3618 | code = 0x30 + (code & 0x03); | |
3619 | else if ((code & 0xfc) == 0xa8) | |
3620 | code = 0x34 + (code & 0x03); | |
3621 | else if ((code & 0xfc) == 0xac) | |
3622 | code = 0x38 + (code & 0x03); | |
3623 | else | |
3624 | abort (); | |
3625 | ||
3626 | /* Fix the opcode. */ | |
3627 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3628 | ||
3629 | /* Fix the relocation's type. */ | |
3630 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3631 | (ELF32_R_TYPE (irel->r_info) |
3632 | == (int) R_MN10300_GOTOFF32) | |
3633 | ? R_MN10300_GOTOFF16 | |
3634 | : (ELF32_R_TYPE (irel->r_info) | |
3635 | == (int) R_MN10300_GOT32) | |
3636 | ? R_MN10300_GOT16 | |
3637 | : (ELF32_R_TYPE (irel->r_info) | |
3638 | == (int) R_MN10300_GOTPC32) | |
3639 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3640 | R_MN10300_16); |
3641 | ||
3642 | /* The opcode got shorter too, so we have to fix the | |
3643 | addend and offset too! */ | |
3644 | irel->r_offset -= 1; | |
3645 | ||
3646 | /* Delete three bytes of data. */ | |
3647 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3648 | irel->r_offset + 1, 3)) | |
3649 | goto error_return; | |
3650 | ||
3651 | /* That will change things, so, we should relax again. | |
3652 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3653 | *again = TRUE; |
252b5132 RH |
3654 | break; |
3655 | ||
3656 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
3657 | mov (d32,sp),an -> mov (d16,sp),an |
3658 | mov (d32,sp),dn -> mov (d16,sp),dn | |
3659 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
3660 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
3661 | add imm32,dn -> add imm16,dn |
3662 | cmp imm32,dn -> cmp imm16,dn | |
3663 | add imm32,an -> add imm16,an | |
3664 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
3665 | and imm32,dn -> and imm16,dn |
3666 | or imm32,dn -> or imm16,dn | |
3667 | xor imm32,dn -> xor imm16,dn | |
3668 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
3669 | |
3670 | case 0xa0: | |
3671 | case 0xb0: | |
3672 | case 0xb1: | |
3673 | case 0xb2: | |
3674 | case 0xb3: | |
3675 | case 0xc0: | |
3676 | case 0xc8: | |
3677 | ||
3678 | case 0xd0: | |
3679 | case 0xd8: | |
3680 | case 0xe0: | |
3681 | case 0xe1: | |
3682 | case 0xe2: | |
3683 | case 0xe3: | |
2a0fa943 AO |
3684 | /* cmp imm16, an zero-extends the immediate. */ |
3685 | if (code == 0xdc | |
bfff1642 | 3686 | && (long) value < 0) |
2a0fa943 AO |
3687 | continue; |
3688 | ||
3689 | /* So do sp-based offsets. */ | |
3690 | if (code >= 0xb0 && code <= 0xb3 | |
bfff1642 | 3691 | && (long) value < 0) |
2a0fa943 AO |
3692 | continue; |
3693 | ||
252b5132 RH |
3694 | /* Note that we've changed the relocation contents, etc. */ |
3695 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3696 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3697 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3698 | |
3699 | /* Fix the opcode. */ | |
3700 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3701 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3702 | ||
3703 | /* Fix the relocation's type. */ | |
3704 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3705 | (ELF32_R_TYPE (irel->r_info) |
3706 | == (int) R_MN10300_GOTOFF32) | |
3707 | ? R_MN10300_GOTOFF16 | |
3708 | : (ELF32_R_TYPE (irel->r_info) | |
3709 | == (int) R_MN10300_GOT32) | |
3710 | ? R_MN10300_GOT16 | |
3711 | : (ELF32_R_TYPE (irel->r_info) | |
3712 | == (int) R_MN10300_GOTPC32) | |
3713 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3714 | R_MN10300_16); |
3715 | ||
3716 | /* Delete two bytes of data. */ | |
3717 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3718 | irel->r_offset + 2, 2)) | |
3719 | goto error_return; | |
3720 | ||
3721 | /* That will change things, so, we should relax again. | |
3722 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3723 | *again = TRUE; |
252b5132 RH |
3724 | break; |
3725 | } | |
3726 | else if (code == 0xfe) | |
3727 | { | |
3728 | /* add imm32,sp -> add imm16,sp */ | |
3729 | ||
3730 | /* Note that we've changed the relocation contents, etc. */ | |
3731 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3732 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3733 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3734 | |
3735 | /* Fix the opcode. */ | |
3736 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3737 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
3738 | ||
3739 | /* Fix the relocation's type. */ | |
3740 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3741 | (ELF32_R_TYPE (irel->r_info) |
3742 | == (int) R_MN10300_GOT32) | |
3743 | ? R_MN10300_GOT16 | |
3744 | : (ELF32_R_TYPE (irel->r_info) | |
3745 | == (int) R_MN10300_GOTOFF32) | |
3746 | ? R_MN10300_GOTOFF16 | |
3747 | : (ELF32_R_TYPE (irel->r_info) | |
3748 | == (int) R_MN10300_GOTPC32) | |
3749 | ? R_MN10300_GOTPC16 : | |
010ac81f | 3750 | R_MN10300_16); |
252b5132 RH |
3751 | |
3752 | /* Delete two bytes of data. */ | |
3753 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3754 | irel->r_offset + 2, 2)) | |
3755 | goto error_return; | |
3756 | ||
3757 | /* That will change things, so, we should relax again. | |
3758 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3759 | *again = TRUE; |
252b5132 RH |
3760 | break; |
3761 | } | |
3762 | } | |
3763 | } | |
3764 | } | |
3765 | ||
6cdc0ccc AM |
3766 | if (isymbuf != NULL |
3767 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3768 | { |
3769 | if (! link_info->keep_memory) | |
6cdc0ccc | 3770 | free (isymbuf); |
252b5132 RH |
3771 | else |
3772 | { | |
6cdc0ccc AM |
3773 | /* Cache the symbols for elf_link_input_bfd. */ |
3774 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3775 | } |
9ad5cbcf AM |
3776 | } |
3777 | ||
6cdc0ccc AM |
3778 | if (contents != NULL |
3779 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
3780 | { |
3781 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3782 | free (contents); |
3783 | else | |
252b5132 | 3784 | { |
6cdc0ccc AM |
3785 | /* Cache the section contents for elf_link_input_bfd. */ |
3786 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 3787 | } |
252b5132 RH |
3788 | } |
3789 | ||
6cdc0ccc AM |
3790 | if (internal_relocs != NULL |
3791 | && elf_section_data (sec)->relocs != internal_relocs) | |
3792 | free (internal_relocs); | |
3793 | ||
b34976b6 | 3794 | return TRUE; |
252b5132 RH |
3795 | |
3796 | error_return: | |
6cdc0ccc AM |
3797 | if (isymbuf != NULL |
3798 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3799 | free (isymbuf); | |
3800 | if (contents != NULL | |
3801 | && elf_section_data (section)->this_hdr.contents != contents) | |
3802 | free (contents); | |
3803 | if (internal_relocs != NULL | |
3804 | && elf_section_data (section)->relocs != internal_relocs) | |
3805 | free (internal_relocs); | |
9ad5cbcf | 3806 | |
b34976b6 | 3807 | return FALSE; |
252b5132 RH |
3808 | } |
3809 | ||
252b5132 RH |
3810 | /* This is a version of bfd_generic_get_relocated_section_contents |
3811 | which uses mn10300_elf_relocate_section. */ | |
3812 | ||
3813 | static bfd_byte * | |
603b7257 NC |
3814 | mn10300_elf_get_relocated_section_contents (bfd *output_bfd, |
3815 | struct bfd_link_info *link_info, | |
3816 | struct bfd_link_order *link_order, | |
3817 | bfd_byte *data, | |
3818 | bfd_boolean relocatable, | |
3819 | asymbol **symbols) | |
252b5132 RH |
3820 | { |
3821 | Elf_Internal_Shdr *symtab_hdr; | |
3822 | asection *input_section = link_order->u.indirect.section; | |
3823 | bfd *input_bfd = input_section->owner; | |
3824 | asection **sections = NULL; | |
3825 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 3826 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
3827 | |
3828 | /* We only need to handle the case of relaxing, or of having a | |
3829 | particular set of section contents, specially. */ | |
1049f94e | 3830 | if (relocatable |
252b5132 RH |
3831 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
3832 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3833 | link_order, data, | |
1049f94e | 3834 | relocatable, |
252b5132 RH |
3835 | symbols); |
3836 | ||
3837 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3838 | ||
3839 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
eea6121a | 3840 | (size_t) input_section->size); |
252b5132 RH |
3841 | |
3842 | if ((input_section->flags & SEC_RELOC) != 0 | |
3843 | && input_section->reloc_count > 0) | |
3844 | { | |
252b5132 | 3845 | asection **secpp; |
6cdc0ccc | 3846 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 3847 | bfd_size_type amt; |
252b5132 | 3848 | |
603b7257 NC |
3849 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, |
3850 | NULL, NULL, FALSE); | |
252b5132 RH |
3851 | if (internal_relocs == NULL) |
3852 | goto error_return; | |
3853 | ||
6cdc0ccc AM |
3854 | if (symtab_hdr->sh_info != 0) |
3855 | { | |
3856 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3857 | if (isymbuf == NULL) | |
3858 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3859 | symtab_hdr->sh_info, 0, | |
3860 | NULL, NULL, NULL); | |
3861 | if (isymbuf == NULL) | |
3862 | goto error_return; | |
3863 | } | |
252b5132 | 3864 | |
9ad5cbcf AM |
3865 | amt = symtab_hdr->sh_info; |
3866 | amt *= sizeof (asection *); | |
603b7257 | 3867 | sections = bfd_malloc (amt); |
9ad5cbcf | 3868 | if (sections == NULL && amt != 0) |
252b5132 RH |
3869 | goto error_return; |
3870 | ||
6cdc0ccc AM |
3871 | isymend = isymbuf + symtab_hdr->sh_info; |
3872 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
3873 | { |
3874 | asection *isec; | |
3875 | ||
6cdc0ccc | 3876 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3877 | isec = bfd_und_section_ptr; |
6cdc0ccc | 3878 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3879 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 3880 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
3881 | isec = bfd_com_section_ptr; |
3882 | else | |
6cdc0ccc | 3883 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
3884 | |
3885 | *secpp = isec; | |
3886 | } | |
3887 | ||
3888 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
603b7257 NC |
3889 | input_section, data, internal_relocs, |
3890 | isymbuf, sections)) | |
252b5132 RH |
3891 | goto error_return; |
3892 | ||
3893 | if (sections != NULL) | |
3894 | free (sections); | |
6cdc0ccc AM |
3895 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
3896 | free (isymbuf); | |
252b5132 RH |
3897 | if (internal_relocs != elf_section_data (input_section)->relocs) |
3898 | free (internal_relocs); | |
252b5132 RH |
3899 | } |
3900 | ||
3901 | return data; | |
3902 | ||
3903 | error_return: | |
6cdc0ccc AM |
3904 | if (sections != NULL) |
3905 | free (sections); | |
3906 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3907 | free (isymbuf); | |
252b5132 RH |
3908 | if (internal_relocs != NULL |
3909 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3910 | free (internal_relocs); | |
252b5132 RH |
3911 | return NULL; |
3912 | } | |
3913 | ||
3914 | /* Assorted hash table functions. */ | |
3915 | ||
3916 | /* Initialize an entry in the link hash table. */ | |
3917 | ||
3918 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
3919 | ||
3920 | static struct bfd_hash_entry * | |
603b7257 NC |
3921 | elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry, |
3922 | struct bfd_hash_table *table, | |
3923 | const char *string) | |
252b5132 RH |
3924 | { |
3925 | struct elf32_mn10300_link_hash_entry *ret = | |
3926 | (struct elf32_mn10300_link_hash_entry *) entry; | |
3927 | ||
3928 | /* Allocate the structure if it has not already been allocated by a | |
3929 | subclass. */ | |
603b7257 NC |
3930 | if (ret == NULL) |
3931 | ret = (struct elf32_mn10300_link_hash_entry *) | |
3932 | bfd_hash_allocate (table, sizeof (* ret)); | |
3933 | if (ret == NULL) | |
252b5132 RH |
3934 | return (struct bfd_hash_entry *) ret; |
3935 | ||
3936 | /* Call the allocation method of the superclass. */ | |
603b7257 | 3937 | ret = (struct elf32_mn10300_link_hash_entry *) |
252b5132 | 3938 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
603b7257 NC |
3939 | table, string); |
3940 | if (ret != NULL) | |
252b5132 RH |
3941 | { |
3942 | ret->direct_calls = 0; | |
3943 | ret->stack_size = 0; | |
5354b572 | 3944 | ret->movm_args = 0; |
252b5132 RH |
3945 | ret->movm_stack_size = 0; |
3946 | ret->flags = 0; | |
eb13e63f | 3947 | ret->value = 0; |
252b5132 RH |
3948 | } |
3949 | ||
3950 | return (struct bfd_hash_entry *) ret; | |
3951 | } | |
3952 | ||
3953 | /* Create an mn10300 ELF linker hash table. */ | |
3954 | ||
3955 | static struct bfd_link_hash_table * | |
603b7257 | 3956 | elf32_mn10300_link_hash_table_create (bfd *abfd) |
252b5132 RH |
3957 | { |
3958 | struct elf32_mn10300_link_hash_table *ret; | |
603b7257 | 3959 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 3960 | |
603b7257 NC |
3961 | ret = bfd_malloc (amt); |
3962 | if (ret == NULL) | |
252b5132 RH |
3963 | return NULL; |
3964 | ||
66eb6687 AM |
3965 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
3966 | elf32_mn10300_link_hash_newfunc, | |
3967 | sizeof (struct elf32_mn10300_link_hash_entry))) | |
252b5132 | 3968 | { |
e2d34d7d | 3969 | free (ret); |
252b5132 RH |
3970 | return NULL; |
3971 | } | |
3972 | ||
3973 | ret->flags = 0; | |
dc810e39 | 3974 | amt = sizeof (struct elf_link_hash_table); |
603b7257 | 3975 | ret->static_hash_table = bfd_malloc (amt); |
252b5132 RH |
3976 | if (ret->static_hash_table == NULL) |
3977 | { | |
e2d34d7d | 3978 | free (ret); |
252b5132 RH |
3979 | return NULL; |
3980 | } | |
3981 | ||
66eb6687 AM |
3982 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
3983 | elf32_mn10300_link_hash_newfunc, | |
3984 | sizeof (struct elf32_mn10300_link_hash_entry))) | |
252b5132 | 3985 | { |
e2d34d7d DJ |
3986 | free (ret->static_hash_table); |
3987 | free (ret); | |
252b5132 RH |
3988 | return NULL; |
3989 | } | |
603b7257 | 3990 | return & ret->root.root; |
252b5132 RH |
3991 | } |
3992 | ||
e2d34d7d DJ |
3993 | /* Free an mn10300 ELF linker hash table. */ |
3994 | ||
3995 | static void | |
603b7257 | 3996 | elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash) |
e2d34d7d DJ |
3997 | { |
3998 | struct elf32_mn10300_link_hash_table *ret | |
3999 | = (struct elf32_mn10300_link_hash_table *) hash; | |
4000 | ||
4001 | _bfd_generic_link_hash_table_free | |
4002 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
4003 | _bfd_generic_link_hash_table_free | |
4004 | ((struct bfd_link_hash_table *) ret); | |
4005 | } | |
4006 | ||
dc810e39 | 4007 | static unsigned long |
603b7257 | 4008 | elf_mn10300_mach (flagword flags) |
252b5132 RH |
4009 | { |
4010 | switch (flags & EF_MN10300_MACH) | |
4011 | { | |
010ac81f KH |
4012 | case E_MN10300_MACH_MN10300: |
4013 | default: | |
4014 | return bfd_mach_mn10300; | |
252b5132 | 4015 | |
010ac81f KH |
4016 | case E_MN10300_MACH_AM33: |
4017 | return bfd_mach_am33; | |
b08fa4d3 AO |
4018 | |
4019 | case E_MN10300_MACH_AM33_2: | |
4020 | return bfd_mach_am33_2; | |
252b5132 RH |
4021 | } |
4022 | } | |
4023 | ||
4024 | /* The final processing done just before writing out a MN10300 ELF object | |
4025 | file. This gets the MN10300 architecture right based on the machine | |
4026 | number. */ | |
4027 | ||
603b7257 NC |
4028 | static void |
4029 | _bfd_mn10300_elf_final_write_processing (bfd *abfd, | |
4030 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 RH |
4031 | { |
4032 | unsigned long val; | |
252b5132 RH |
4033 | |
4034 | switch (bfd_get_mach (abfd)) | |
4035 | { | |
010ac81f KH |
4036 | default: |
4037 | case bfd_mach_mn10300: | |
4038 | val = E_MN10300_MACH_MN10300; | |
4039 | break; | |
4040 | ||
4041 | case bfd_mach_am33: | |
4042 | val = E_MN10300_MACH_AM33; | |
4043 | break; | |
b08fa4d3 AO |
4044 | |
4045 | case bfd_mach_am33_2: | |
4046 | val = E_MN10300_MACH_AM33_2; | |
4047 | break; | |
252b5132 RH |
4048 | } |
4049 | ||
4050 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
4051 | elf_elfheader (abfd)->e_flags |= val; | |
4052 | } | |
4053 | ||
603b7257 NC |
4054 | static bfd_boolean |
4055 | _bfd_mn10300_elf_object_p (bfd *abfd) | |
252b5132 RH |
4056 | { |
4057 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 4058 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 4059 | return TRUE; |
252b5132 RH |
4060 | } |
4061 | ||
4062 | /* Merge backend specific data from an object file to the output | |
4063 | object file when linking. */ | |
4064 | ||
603b7257 NC |
4065 | static bfd_boolean |
4066 | _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
252b5132 RH |
4067 | { |
4068 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4069 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4070 | return TRUE; |
252b5132 RH |
4071 | |
4072 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4073 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
4074 | { | |
4075 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3b36f7e6 AM |
4076 | bfd_get_mach (ibfd))) |
4077 | return FALSE; | |
252b5132 RH |
4078 | } |
4079 | ||
b34976b6 | 4080 | return TRUE; |
252b5132 RH |
4081 | } |
4082 | ||
603b7257 NC |
4083 | #define PLT0_ENTRY_SIZE 15 |
4084 | #define PLT_ENTRY_SIZE 20 | |
4085 | #define PIC_PLT_ENTRY_SIZE 24 | |
03a12831 AO |
4086 | |
4087 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
4088 | { | |
4089 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
4090 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
4091 | 0xf0, 0xf4, /* jmp (a0) */ | |
4092 | }; | |
4093 | ||
4094 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
4095 | { | |
4096 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
4097 | 0xf0, 0xf4, /* jmp (a0) */ | |
4098 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4099 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
4100 | }; | |
4101 | ||
4102 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
4103 | { | |
4104 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
4105 | 0xf0, 0xf4, /* jmp (a0) */ | |
4106 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
4107 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
4108 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
4109 | 0xf0, 0xf4, /* jmp (a0) */ | |
4110 | }; | |
4111 | ||
4112 | /* Return size of the first PLT entry. */ | |
4113 | #define elf_mn10300_sizeof_plt0(info) \ | |
4114 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
4115 | ||
4116 | /* Return size of a PLT entry. */ | |
4117 | #define elf_mn10300_sizeof_plt(info) \ | |
4118 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
4119 | ||
4120 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
4121 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
4122 | ||
4123 | /* Return offset of the linker in PLT0 entry. */ | |
4124 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
4125 | ||
4126 | /* Return offset of the GOT id in PLT0 entry. */ | |
4127 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
4128 | ||
603b7257 | 4129 | /* Return offset of the temporary in PLT entry. */ |
03a12831 AO |
4130 | #define elf_mn10300_plt_temp_offset(info) 8 |
4131 | ||
4132 | /* Return offset of the symbol in PLT entry. */ | |
4133 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
4134 | ||
4135 | /* Return offset of the relocation in PLT entry. */ | |
4136 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
4137 | ||
4138 | /* The name of the dynamic interpreter. This is put in the .interp | |
4139 | section. */ | |
4140 | ||
4141 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
4142 | ||
4143 | /* Create dynamic sections when linking against a dynamic object. */ | |
4144 | ||
4145 | static bfd_boolean | |
603b7257 | 4146 | _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
03a12831 AO |
4147 | { |
4148 | flagword flags; | |
4149 | asection * s; | |
9c5bfbb7 | 4150 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
4151 | int ptralign = 0; |
4152 | ||
4153 | switch (bed->s->arch_size) | |
4154 | { | |
4155 | case 32: | |
4156 | ptralign = 2; | |
4157 | break; | |
4158 | ||
4159 | case 64: | |
4160 | ptralign = 3; | |
4161 | break; | |
4162 | ||
4163 | default: | |
4164 | bfd_set_error (bfd_error_bad_value); | |
4165 | return FALSE; | |
4166 | } | |
4167 | ||
4168 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
4169 | .rel[a].bss sections. */ | |
03a12831 AO |
4170 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4171 | | SEC_LINKER_CREATED); | |
4172 | ||
3496cb2a L |
4173 | s = bfd_make_section_with_flags (abfd, |
4174 | (bed->default_use_rela_p | |
4175 | ? ".rela.plt" : ".rel.plt"), | |
4176 | flags | SEC_READONLY); | |
03a12831 | 4177 | if (s == NULL |
03a12831 AO |
4178 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4179 | return FALSE; | |
4180 | ||
4181 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
4182 | return FALSE; | |
4183 | ||
4184 | { | |
4185 | const char * secname; | |
4186 | char * relname; | |
4187 | flagword secflags; | |
4188 | asection * sec; | |
4189 | ||
4190 | for (sec = abfd->sections; sec; sec = sec->next) | |
4191 | { | |
4192 | secflags = bfd_get_section_flags (abfd, sec); | |
4193 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
4194 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
4195 | continue; | |
4196 | ||
4197 | secname = bfd_get_section_name (abfd, sec); | |
603b7257 | 4198 | relname = bfd_malloc (strlen (secname) + 6); |
03a12831 AO |
4199 | strcpy (relname, ".rela"); |
4200 | strcat (relname, secname); | |
4201 | ||
3496cb2a L |
4202 | s = bfd_make_section_with_flags (abfd, relname, |
4203 | flags | SEC_READONLY); | |
03a12831 | 4204 | if (s == NULL |
03a12831 AO |
4205 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4206 | return FALSE; | |
4207 | } | |
4208 | } | |
4209 | ||
4210 | if (bed->want_dynbss) | |
4211 | { | |
4212 | /* The .dynbss section is a place to put symbols which are defined | |
4213 | by dynamic objects, are referenced by regular objects, and are | |
4214 | not functions. We must allocate space for them in the process | |
4215 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
4216 | initialize them at run time. The linker script puts the .dynbss | |
4217 | section into the .bss section of the final image. */ | |
3496cb2a L |
4218 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
4219 | SEC_ALLOC | SEC_LINKER_CREATED); | |
4220 | if (s == NULL) | |
03a12831 AO |
4221 | return FALSE; |
4222 | ||
4223 | /* The .rel[a].bss section holds copy relocs. This section is not | |
4224 | normally needed. We need to create it here, though, so that the | |
4225 | linker will map it to an output section. We can't just create it | |
4226 | only if we need it, because we will not know whether we need it | |
4227 | until we have seen all the input files, and the first time the | |
4228 | main linker code calls BFD after examining all the input files | |
4229 | (size_dynamic_sections) the input sections have already been | |
4230 | mapped to the output sections. If the section turns out not to | |
4231 | be needed, we can discard it later. We will never need this | |
4232 | section when generating a shared object, since they do not use | |
4233 | copy relocs. */ | |
4234 | if (! info->shared) | |
4235 | { | |
3496cb2a L |
4236 | s = bfd_make_section_with_flags (abfd, |
4237 | (bed->default_use_rela_p | |
4238 | ? ".rela.bss" : ".rel.bss"), | |
4239 | flags | SEC_READONLY); | |
03a12831 | 4240 | if (s == NULL |
03a12831 AO |
4241 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4242 | return FALSE; | |
4243 | } | |
4244 | } | |
4245 | ||
4246 | return TRUE; | |
4247 | } | |
4248 | \f | |
4249 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4250 | regular object. The current definition is in some section of the | |
4251 | dynamic object, but we're not including those sections. We have to | |
4252 | change the definition to something the rest of the link can | |
4253 | understand. */ | |
4254 | ||
4255 | static bfd_boolean | |
603b7257 NC |
4256 | _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info, |
4257 | struct elf_link_hash_entry * h) | |
03a12831 AO |
4258 | { |
4259 | bfd * dynobj; | |
4260 | asection * s; | |
03a12831 AO |
4261 | |
4262 | dynobj = elf_hash_table (info)->dynobj; | |
4263 | ||
4264 | /* Make sure we know what is going on here. */ | |
4265 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4266 | && (h->needs_plt |
f6e332e6 | 4267 | || h->u.weakdef != NULL |
f5385ebf AM |
4268 | || (h->def_dynamic |
4269 | && h->ref_regular | |
4270 | && !h->def_regular))); | |
03a12831 AO |
4271 | |
4272 | /* If this is a function, put it in the procedure linkage table. We | |
4273 | will fill in the contents of the procedure linkage table later, | |
4274 | when we know the address of the .got section. */ | |
4275 | if (h->type == STT_FUNC | |
f5385ebf | 4276 | || h->needs_plt) |
03a12831 AO |
4277 | { |
4278 | if (! info->shared | |
f5385ebf AM |
4279 | && !h->def_dynamic |
4280 | && !h->ref_dynamic) | |
03a12831 AO |
4281 | { |
4282 | /* This case can occur if we saw a PLT reloc in an input | |
4283 | file, but the symbol was never referred to by a dynamic | |
4284 | object. In such a case, we don't actually need to build | |
4285 | a procedure linkage table, and we can just do a REL32 | |
4286 | reloc instead. */ | |
f5385ebf | 4287 | BFD_ASSERT (h->needs_plt); |
03a12831 AO |
4288 | return TRUE; |
4289 | } | |
4290 | ||
4291 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4292 | if (h->dynindx == -1) | |
4293 | { | |
c152c796 | 4294 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
4295 | return FALSE; |
4296 | } | |
4297 | ||
4298 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
4299 | BFD_ASSERT (s != NULL); | |
4300 | ||
4301 | /* If this is the first .plt entry, make room for the special | |
4302 | first entry. */ | |
eea6121a AM |
4303 | if (s->size == 0) |
4304 | s->size += elf_mn10300_sizeof_plt0 (info); | |
03a12831 AO |
4305 | |
4306 | /* If this symbol is not defined in a regular file, and we are | |
4307 | not generating a shared library, then set the symbol to this | |
4308 | location in the .plt. This is required to make function | |
4309 | pointers compare as equal between the normal executable and | |
4310 | the shared library. */ | |
4311 | if (! info->shared | |
f5385ebf | 4312 | && !h->def_regular) |
03a12831 AO |
4313 | { |
4314 | h->root.u.def.section = s; | |
eea6121a | 4315 | h->root.u.def.value = s->size; |
03a12831 AO |
4316 | } |
4317 | ||
eea6121a | 4318 | h->plt.offset = s->size; |
03a12831 AO |
4319 | |
4320 | /* Make room for this entry. */ | |
eea6121a | 4321 | s->size += elf_mn10300_sizeof_plt (info); |
03a12831 AO |
4322 | |
4323 | /* We also need to make an entry in the .got.plt section, which | |
4324 | will be placed in the .got section by the linker script. */ | |
03a12831 AO |
4325 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
4326 | BFD_ASSERT (s != NULL); | |
eea6121a | 4327 | s->size += 4; |
03a12831 AO |
4328 | |
4329 | /* We also need to make an entry in the .rela.plt section. */ | |
03a12831 AO |
4330 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
4331 | BFD_ASSERT (s != NULL); | |
eea6121a | 4332 | s->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
4333 | |
4334 | return TRUE; | |
4335 | } | |
4336 | ||
4337 | /* If this is a weak symbol, and there is a real definition, the | |
4338 | processor independent code will have arranged for us to see the | |
4339 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4340 | if (h->u.weakdef != NULL) |
03a12831 | 4341 | { |
f6e332e6 AM |
4342 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4343 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4344 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4345 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
03a12831 AO |
4346 | return TRUE; |
4347 | } | |
4348 | ||
4349 | /* This is a reference to a symbol defined by a dynamic object which | |
4350 | is not a function. */ | |
4351 | ||
4352 | /* If we are creating a shared library, we must presume that the | |
4353 | only references to the symbol are via the global offset table. | |
4354 | For such cases we need not do anything here; the relocations will | |
4355 | be handled correctly by relocate_section. */ | |
4356 | if (info->shared) | |
4357 | return TRUE; | |
4358 | ||
4359 | /* If there are no references to this symbol that do not use the | |
4360 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 4361 | if (!h->non_got_ref) |
03a12831 AO |
4362 | return TRUE; |
4363 | ||
909272ee AM |
4364 | if (h->size == 0) |
4365 | { | |
4366 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4367 | h->root.root.string); | |
4368 | return TRUE; | |
4369 | } | |
4370 | ||
03a12831 AO |
4371 | /* We must allocate the symbol in our .dynbss section, which will |
4372 | become part of the .bss section of the executable. There will be | |
4373 | an entry for this symbol in the .dynsym section. The dynamic | |
4374 | object will contain position independent code, so all references | |
4375 | from the dynamic object to this symbol will go through the global | |
4376 | offset table. The dynamic linker will use the .dynsym entry to | |
4377 | determine the address it must put in the global offset table, so | |
4378 | both the dynamic object and the regular object will refer to the | |
4379 | same memory location for the variable. */ | |
4380 | ||
4381 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
4382 | BFD_ASSERT (s != NULL); | |
4383 | ||
4384 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
4385 | copy the initial value out of the dynamic object and into the | |
4386 | runtime process image. We need to remember the offset into the | |
4387 | .rela.bss section we are going to use. */ | |
4388 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4389 | { | |
4390 | asection * srel; | |
4391 | ||
4392 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
4393 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4394 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 4395 | h->needs_copy = 1; |
03a12831 AO |
4396 | } |
4397 | ||
027297b7 | 4398 | return _bfd_elf_adjust_dynamic_copy (h, s); |
03a12831 AO |
4399 | } |
4400 | ||
03a12831 AO |
4401 | /* Set the sizes of the dynamic sections. */ |
4402 | ||
4403 | static bfd_boolean | |
603b7257 NC |
4404 | _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd, |
4405 | struct bfd_link_info * info) | |
03a12831 AO |
4406 | { |
4407 | bfd * dynobj; | |
4408 | asection * s; | |
4409 | bfd_boolean plt; | |
4410 | bfd_boolean relocs; | |
4411 | bfd_boolean reltext; | |
4412 | ||
4413 | dynobj = elf_hash_table (info)->dynobj; | |
4414 | BFD_ASSERT (dynobj != NULL); | |
4415 | ||
4416 | if (elf_hash_table (info)->dynamic_sections_created) | |
4417 | { | |
4418 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 4419 | if (info->executable) |
03a12831 AO |
4420 | { |
4421 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4422 | BFD_ASSERT (s != NULL); | |
eea6121a | 4423 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
03a12831 AO |
4424 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4425 | } | |
4426 | } | |
4427 | else | |
4428 | { | |
4429 | /* We may have created entries in the .rela.got section. | |
4430 | However, if we are not creating the dynamic sections, we will | |
4431 | not actually use these entries. Reset the size of .rela.got, | |
4432 | which will cause it to get stripped from the output file | |
4433 | below. */ | |
4434 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4435 | if (s != NULL) | |
eea6121a | 4436 | s->size = 0; |
03a12831 AO |
4437 | } |
4438 | ||
03a12831 AO |
4439 | /* The check_relocs and adjust_dynamic_symbol entry points have |
4440 | determined the sizes of the various dynamic sections. Allocate | |
4441 | memory for them. */ | |
4442 | plt = FALSE; | |
4443 | relocs = FALSE; | |
4444 | reltext = FALSE; | |
4445 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4446 | { | |
4447 | const char * name; | |
03a12831 AO |
4448 | |
4449 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4450 | continue; | |
4451 | ||
4452 | /* It's OK to base decisions on the section name, because none | |
4453 | of the dynobj section names depend upon the input files. */ | |
4454 | name = bfd_get_section_name (dynobj, s); | |
4455 | ||
603b7257 | 4456 | if (streq (name, ".plt")) |
03a12831 | 4457 | { |
c456f082 AM |
4458 | /* Remember whether there is a PLT. */ |
4459 | plt = s->size != 0; | |
03a12831 | 4460 | } |
0112cd26 | 4461 | else if (CONST_STRNEQ (name, ".rela")) |
03a12831 | 4462 | { |
c456f082 | 4463 | if (s->size != 0) |
03a12831 AO |
4464 | { |
4465 | asection * target; | |
4466 | ||
4467 | /* Remember whether there are any reloc sections other | |
4468 | than .rela.plt. */ | |
603b7257 | 4469 | if (! streq (name, ".rela.plt")) |
03a12831 AO |
4470 | { |
4471 | const char * outname; | |
4472 | ||
4473 | relocs = TRUE; | |
4474 | ||
4475 | /* If this relocation section applies to a read only | |
4476 | section, then we probably need a DT_TEXTREL | |
4477 | entry. The entries in the .rela.plt section | |
4478 | really apply to the .got section, which we | |
4479 | created ourselves and so know is not readonly. */ | |
4480 | outname = bfd_get_section_name (output_bfd, | |
4481 | s->output_section); | |
4482 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
4483 | if (target != NULL | |
4484 | && (target->flags & SEC_READONLY) != 0 | |
4485 | && (target->flags & SEC_ALLOC) != 0) | |
4486 | reltext = TRUE; | |
4487 | } | |
4488 | ||
4489 | /* We use the reloc_count field as a counter if we need | |
4490 | to copy relocs into the output file. */ | |
4491 | s->reloc_count = 0; | |
4492 | } | |
4493 | } | |
0112cd26 | 4494 | else if (! CONST_STRNEQ (name, ".got") |
603b7257 | 4495 | && ! streq (name, ".dynbss")) |
03a12831 AO |
4496 | /* It's not one of our sections, so don't allocate space. */ |
4497 | continue; | |
4498 | ||
c456f082 | 4499 | if (s->size == 0) |
03a12831 | 4500 | { |
c456f082 AM |
4501 | /* If we don't need this section, strip it from the |
4502 | output file. This is mostly to handle .rela.bss and | |
4503 | .rela.plt. We must create both sections in | |
4504 | create_dynamic_sections, because they must be created | |
4505 | before the linker maps input sections to output | |
4506 | sections. The linker does that before | |
4507 | adjust_dynamic_symbol is called, and it is that | |
4508 | function which decides whether anything needs to go | |
4509 | into these sections. */ | |
8423293d | 4510 | s->flags |= SEC_EXCLUDE; |
03a12831 AO |
4511 | continue; |
4512 | } | |
4513 | ||
c456f082 AM |
4514 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
4515 | continue; | |
4516 | ||
03a12831 AO |
4517 | /* Allocate memory for the section contents. We use bfd_zalloc |
4518 | here in case unused entries are not reclaimed before the | |
4519 | section's contents are written out. This should not happen, | |
4520 | but this way if it does, we get a R_MN10300_NONE reloc | |
4521 | instead of garbage. */ | |
603b7257 | 4522 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 4523 | if (s->contents == NULL) |
03a12831 AO |
4524 | return FALSE; |
4525 | } | |
4526 | ||
4527 | if (elf_hash_table (info)->dynamic_sections_created) | |
4528 | { | |
4529 | /* Add some entries to the .dynamic section. We fill in the | |
4530 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
4531 | but we must add the entries now so that we get the correct | |
4532 | size for the .dynamic section. The DT_DEBUG entry is filled | |
4533 | in by the dynamic linker and used by the debugger. */ | |
4534 | if (! info->shared) | |
4535 | { | |
5a580b3a | 4536 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) |
03a12831 AO |
4537 | return FALSE; |
4538 | } | |
4539 | ||
4540 | if (plt) | |
4541 | { | |
5a580b3a AM |
4542 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
4543 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4544 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
4545 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
03a12831 AO |
4546 | return FALSE; |
4547 | } | |
4548 | ||
4549 | if (relocs) | |
4550 | { | |
5a580b3a AM |
4551 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
4552 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
4553 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
4554 | sizeof (Elf32_External_Rela))) | |
03a12831 AO |
4555 | return FALSE; |
4556 | } | |
4557 | ||
4558 | if (reltext) | |
4559 | { | |
5a580b3a | 4560 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
03a12831 AO |
4561 | return FALSE; |
4562 | } | |
4563 | } | |
4564 | ||
4565 | return TRUE; | |
4566 | } | |
4567 | ||
4568 | /* Finish up dynamic symbol handling. We set the contents of various | |
4569 | dynamic sections here. */ | |
4570 | ||
4571 | static bfd_boolean | |
603b7257 NC |
4572 | _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd, |
4573 | struct bfd_link_info * info, | |
4574 | struct elf_link_hash_entry * h, | |
4575 | Elf_Internal_Sym * sym) | |
03a12831 AO |
4576 | { |
4577 | bfd * dynobj; | |
4578 | ||
4579 | dynobj = elf_hash_table (info)->dynobj; | |
4580 | ||
4581 | if (h->plt.offset != (bfd_vma) -1) | |
4582 | { | |
4583 | asection * splt; | |
4584 | asection * sgot; | |
4585 | asection * srel; | |
4586 | bfd_vma plt_index; | |
4587 | bfd_vma got_offset; | |
4588 | Elf_Internal_Rela rel; | |
4589 | ||
4590 | /* This symbol has an entry in the procedure linkage table. Set | |
4591 | it up. */ | |
4592 | ||
4593 | BFD_ASSERT (h->dynindx != -1); | |
4594 | ||
4595 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4596 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4597 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4598 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4599 | ||
4600 | /* Get the index in the procedure linkage table which | |
4601 | corresponds to this symbol. This is the index of this symbol | |
4602 | in all the symbols for which we are making plt entries. The | |
4603 | first entry in the procedure linkage table is reserved. */ | |
4604 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
4605 | / elf_mn10300_sizeof_plt (info)); | |
4606 | ||
4607 | /* Get the offset into the .got table of the entry that | |
4608 | corresponds to this function. Each .got entry is 4 bytes. | |
4609 | The first three are reserved. */ | |
4610 | got_offset = (plt_index + 3) * 4; | |
4611 | ||
4612 | /* Fill in the entry in the procedure linkage table. */ | |
4613 | if (! info->shared) | |
4614 | { | |
4615 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
4616 | elf_mn10300_sizeof_plt (info)); | |
4617 | bfd_put_32 (output_bfd, | |
4618 | (sgot->output_section->vma | |
4619 | + sgot->output_offset | |
4620 | + got_offset), | |
4621 | (splt->contents + h->plt.offset | |
4622 | + elf_mn10300_plt_symbol_offset (info))); | |
4623 | ||
4624 | bfd_put_32 (output_bfd, | |
4625 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
4626 | (splt->contents + h->plt.offset | |
4627 | + elf_mn10300_plt_plt0_offset (info))); | |
4628 | } | |
4629 | else | |
4630 | { | |
4631 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
4632 | elf_mn10300_sizeof_plt (info)); | |
4633 | ||
4634 | bfd_put_32 (output_bfd, got_offset, | |
4635 | (splt->contents + h->plt.offset | |
4636 | + elf_mn10300_plt_symbol_offset (info))); | |
4637 | } | |
4638 | ||
4639 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4640 | (splt->contents + h->plt.offset | |
4641 | + elf_mn10300_plt_reloc_offset (info))); | |
4642 | ||
4643 | /* Fill in the entry in the global offset table. */ | |
4644 | bfd_put_32 (output_bfd, | |
4645 | (splt->output_section->vma | |
4646 | + splt->output_offset | |
4647 | + h->plt.offset | |
4648 | + elf_mn10300_plt_temp_offset (info)), | |
4649 | sgot->contents + got_offset); | |
4650 | ||
4651 | /* Fill in the entry in the .rela.plt section. */ | |
4652 | rel.r_offset = (sgot->output_section->vma | |
4653 | + sgot->output_offset | |
4654 | + got_offset); | |
4655 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
4656 | rel.r_addend = 0; | |
4657 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4658 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4659 | + plt_index)); | |
03a12831 | 4660 | |
f5385ebf | 4661 | if (!h->def_regular) |
03a12831 AO |
4662 | /* Mark the symbol as undefined, rather than as defined in |
4663 | the .plt section. Leave the value alone. */ | |
4664 | sym->st_shndx = SHN_UNDEF; | |
4665 | } | |
4666 | ||
4667 | if (h->got.offset != (bfd_vma) -1) | |
4668 | { | |
4669 | asection * sgot; | |
4670 | asection * srel; | |
4671 | Elf_Internal_Rela rel; | |
4672 | ||
4673 | /* This symbol has an entry in the global offset table. Set it up. */ | |
03a12831 AO |
4674 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
4675 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4676 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4677 | ||
4678 | rel.r_offset = (sgot->output_section->vma | |
4679 | + sgot->output_offset | |
603b7257 | 4680 | + (h->got.offset & ~1)); |
03a12831 AO |
4681 | |
4682 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4683 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4684 | the symbol was forced to be local because of a version file. | |
4685 | The entry in the global offset table will already have been | |
4686 | initialized in the relocate_section function. */ | |
4687 | if (info->shared | |
4688 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 4689 | && h->def_regular) |
03a12831 AO |
4690 | { |
4691 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
4692 | rel.r_addend = (h->root.u.def.value | |
4693 | + h->root.u.def.section->output_section->vma | |
4694 | + h->root.u.def.section->output_offset); | |
4695 | } | |
4696 | else | |
4697 | { | |
4698 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4699 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
4700 | rel.r_addend = 0; | |
4701 | } | |
4702 | ||
4703 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4704 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4705 | + srel->reloc_count)); | |
03a12831 AO |
4706 | ++ srel->reloc_count; |
4707 | } | |
4708 | ||
f5385ebf | 4709 | if (h->needs_copy) |
03a12831 AO |
4710 | { |
4711 | asection * s; | |
4712 | Elf_Internal_Rela rel; | |
4713 | ||
4714 | /* This symbol needs a copy reloc. Set it up. */ | |
4715 | BFD_ASSERT (h->dynindx != -1 | |
4716 | && (h->root.type == bfd_link_hash_defined | |
4717 | || h->root.type == bfd_link_hash_defweak)); | |
4718 | ||
4719 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4720 | ".rela.bss"); | |
4721 | BFD_ASSERT (s != NULL); | |
4722 | ||
4723 | rel.r_offset = (h->root.u.def.value | |
4724 | + h->root.u.def.section->output_section->vma | |
4725 | + h->root.u.def.section->output_offset); | |
4726 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
4727 | rel.r_addend = 0; | |
603b7257 | 4728 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
560e09e9 NC |
4729 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
4730 | + s->reloc_count)); | |
03a12831 AO |
4731 | ++ s->reloc_count; |
4732 | } | |
4733 | ||
4734 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
603b7257 | 4735 | if (streq (h->root.root.string, "_DYNAMIC") |
22edb2f1 | 4736 | || h == elf_hash_table (info)->hgot) |
03a12831 AO |
4737 | sym->st_shndx = SHN_ABS; |
4738 | ||
4739 | return TRUE; | |
4740 | } | |
4741 | ||
4742 | /* Finish up the dynamic sections. */ | |
4743 | ||
4744 | static bfd_boolean | |
603b7257 NC |
4745 | _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd, |
4746 | struct bfd_link_info * info) | |
03a12831 AO |
4747 | { |
4748 | bfd * dynobj; | |
4749 | asection * sgot; | |
4750 | asection * sdyn; | |
4751 | ||
4752 | dynobj = elf_hash_table (info)->dynobj; | |
4753 | ||
4754 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4755 | BFD_ASSERT (sgot != NULL); | |
4756 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4757 | ||
4758 | if (elf_hash_table (info)->dynamic_sections_created) | |
4759 | { | |
4760 | asection * splt; | |
4761 | Elf32_External_Dyn * dyncon; | |
4762 | Elf32_External_Dyn * dynconend; | |
4763 | ||
4764 | BFD_ASSERT (sdyn != NULL); | |
4765 | ||
4766 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4767 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
03a12831 AO |
4768 | |
4769 | for (; dyncon < dynconend; dyncon++) | |
4770 | { | |
4771 | Elf_Internal_Dyn dyn; | |
4772 | const char * name; | |
4773 | asection * s; | |
4774 | ||
4775 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4776 | ||
4777 | switch (dyn.d_tag) | |
4778 | { | |
4779 | default: | |
4780 | break; | |
4781 | ||
4782 | case DT_PLTGOT: | |
4783 | name = ".got"; | |
4784 | goto get_vma; | |
4785 | ||
4786 | case DT_JMPREL: | |
4787 | name = ".rela.plt"; | |
4788 | get_vma: | |
4789 | s = bfd_get_section_by_name (output_bfd, name); | |
4790 | BFD_ASSERT (s != NULL); | |
4791 | dyn.d_un.d_ptr = s->vma; | |
4792 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4793 | break; | |
4794 | ||
4795 | case DT_PLTRELSZ: | |
4796 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4797 | BFD_ASSERT (s != NULL); | |
eea6121a | 4798 | dyn.d_un.d_val = s->size; |
03a12831 AO |
4799 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4800 | break; | |
4801 | ||
4802 | case DT_RELASZ: | |
4803 | /* My reading of the SVR4 ABI indicates that the | |
4804 | procedure linkage table relocs (DT_JMPREL) should be | |
4805 | included in the overall relocs (DT_RELA). This is | |
4806 | what Solaris does. However, UnixWare can not handle | |
4807 | that case. Therefore, we override the DT_RELASZ entry | |
4808 | here to make it not include the JMPREL relocs. Since | |
4809 | the linker script arranges for .rela.plt to follow all | |
4810 | other relocation sections, we don't have to worry | |
4811 | about changing the DT_RELA entry. */ | |
4812 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4813 | if (s != NULL) | |
eea6121a | 4814 | dyn.d_un.d_val -= s->size; |
03a12831 AO |
4815 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4816 | break; | |
4817 | } | |
4818 | } | |
4819 | ||
4820 | /* Fill in the first entry in the procedure linkage table. */ | |
4821 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
eea6121a | 4822 | if (splt && splt->size > 0) |
03a12831 AO |
4823 | { |
4824 | if (info->shared) | |
4825 | { | |
4826 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
4827 | elf_mn10300_sizeof_plt (info)); | |
4828 | } | |
4829 | else | |
4830 | { | |
4831 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
4832 | bfd_put_32 (output_bfd, | |
4833 | sgot->output_section->vma + sgot->output_offset + 4, | |
4834 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
4835 | bfd_put_32 (output_bfd, | |
4836 | sgot->output_section->vma + sgot->output_offset + 8, | |
4837 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
4838 | } | |
4839 | ||
4840 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4841 | really seem like the right value. */ | |
4842 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4843 | } | |
4844 | } | |
4845 | ||
4846 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4847 | if (sgot->size > 0) |
03a12831 AO |
4848 | { |
4849 | if (sdyn == NULL) | |
4850 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4851 | else | |
4852 | bfd_put_32 (output_bfd, | |
4853 | sdyn->output_section->vma + sdyn->output_offset, | |
4854 | sgot->contents); | |
4855 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4856 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4857 | } | |
4858 | ||
4859 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4860 | ||
4861 | return TRUE; | |
4862 | } | |
4863 | ||
a873f25a AO |
4864 | /* Classify relocation types, such that combreloc can sort them |
4865 | properly. */ | |
4866 | ||
4867 | static enum elf_reloc_type_class | |
4868 | _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
4869 | { | |
4870 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
4871 | { | |
603b7257 NC |
4872 | case R_MN10300_RELATIVE: return reloc_class_relative; |
4873 | case R_MN10300_JMP_SLOT: return reloc_class_plt; | |
4874 | case R_MN10300_COPY: return reloc_class_copy; | |
4875 | default: return reloc_class_normal; | |
a873f25a AO |
4876 | } |
4877 | } | |
4878 | ||
73c3cd1c | 4879 | #ifndef ELF_ARCH |
252b5132 RH |
4880 | #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
4881 | #define TARGET_LITTLE_NAME "elf32-mn10300" | |
4882 | #define ELF_ARCH bfd_arch_mn10300 | |
6f4514dc AO |
4883 | #define ELF_MACHINE_CODE EM_MN10300 |
4884 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 4885 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 4886 | #endif |
252b5132 RH |
4887 | |
4888 | #define elf_info_to_howto mn10300_info_to_howto | |
4889 | #define elf_info_to_howto_rel 0 | |
4890 | #define elf_backend_can_gc_sections 1 | |
b491616a | 4891 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4892 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
4893 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
4894 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
4895 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
4896 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4897 | mn10300_elf_get_relocated_section_contents | |
4898 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4899 | elf32_mn10300_link_hash_table_create | |
e2d34d7d DJ |
4900 | #define bfd_elf32_bfd_link_hash_table_free \ |
4901 | elf32_mn10300_link_hash_table_free | |
252b5132 | 4902 | |
73c3cd1c | 4903 | #ifndef elf_symbol_leading_char |
252b5132 | 4904 | #define elf_symbol_leading_char '_' |
73c3cd1c | 4905 | #endif |
252b5132 RH |
4906 | |
4907 | /* So we can set bits in e_flags. */ | |
4908 | #define elf_backend_final_write_processing \ | |
3b36f7e6 AM |
4909 | _bfd_mn10300_elf_final_write_processing |
4910 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
252b5132 RH |
4911 | |
4912 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3b36f7e6 | 4913 | _bfd_mn10300_elf_merge_private_bfd_data |
252b5132 | 4914 | |
03a12831 AO |
4915 | #define elf_backend_can_gc_sections 1 |
4916 | #define elf_backend_create_dynamic_sections \ | |
4917 | _bfd_mn10300_elf_create_dynamic_sections | |
4918 | #define elf_backend_adjust_dynamic_symbol \ | |
4919 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
4920 | #define elf_backend_size_dynamic_sections \ | |
4921 | _bfd_mn10300_elf_size_dynamic_sections | |
74541ad4 AM |
4922 | #define elf_backend_omit_section_dynsym \ |
4923 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
03a12831 AO |
4924 | #define elf_backend_finish_dynamic_symbol \ |
4925 | _bfd_mn10300_elf_finish_dynamic_symbol | |
4926 | #define elf_backend_finish_dynamic_sections \ | |
4927 | _bfd_mn10300_elf_finish_dynamic_sections | |
4928 | ||
a873f25a AO |
4929 | #define elf_backend_reloc_type_class \ |
4930 | _bfd_mn10300_elf_reloc_type_class | |
4931 | ||
03a12831 AO |
4932 | #define elf_backend_want_got_plt 1 |
4933 | #define elf_backend_plt_readonly 1 | |
4934 | #define elf_backend_want_plt_sym 0 | |
4935 | #define elf_backend_got_header_size 12 | |
03a12831 | 4936 | |
252b5132 | 4937 | #include "elf32-target.h" |