Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Matsushita 10300 specific support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
010ac81f | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/mn10300.h" | |
26 | ||
917583ad NC |
27 | static bfd_reloc_status_type mn10300_elf_final_link_relocate |
28 | PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, | |
03a12831 AO |
29 | bfd_vma, bfd_vma, bfd_vma, |
30 | struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *, | |
917583ad | 31 | asection *, int)); |
b34976b6 | 32 | static bfd_boolean mn10300_elf_relocate_section |
917583ad NC |
33 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
34 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 AM |
35 | static bfd_boolean mn10300_elf_relax_section |
36 | PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); | |
917583ad NC |
37 | static bfd_byte * mn10300_elf_get_relocated_section_contents |
38 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
b34976b6 AM |
39 | bfd_byte *, bfd_boolean, asymbol **)); |
40 | static unsigned long elf_mn10300_mach | |
41 | PARAMS ((flagword)); | |
42 | void _bfd_mn10300_elf_final_write_processing | |
43 | PARAMS ((bfd *, bfd_boolean)); | |
44 | bfd_boolean _bfd_mn10300_elf_object_p | |
45 | PARAMS ((bfd *)); | |
46 | bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data | |
47 | PARAMS ((bfd *,bfd *)); | |
917583ad | 48 | |
03a12831 AO |
49 | /* The mn10300 linker needs to keep track of the number of relocs that |
50 | it decides to copy in check_relocs for each symbol. This is so | |
51 | that it can discard PC relative relocs if it doesn't need them when | |
52 | linking with -Bsymbolic. We store the information in a field | |
53 | extending the regular ELF linker hash table. */ | |
54 | ||
010ac81f | 55 | struct elf32_mn10300_link_hash_entry { |
252b5132 RH |
56 | /* The basic elf link hash table entry. */ |
57 | struct elf_link_hash_entry root; | |
58 | ||
59 | /* For function symbols, the number of times this function is | |
60 | called directly (ie by name). */ | |
61 | unsigned int direct_calls; | |
62 | ||
63 | /* For function symbols, the size of this function's stack | |
64 | (if <= 255 bytes). We stuff this into "call" instructions | |
65 | to this target when it's valid and profitable to do so. | |
66 | ||
67 | This does not include stack allocated by movm! */ | |
68 | unsigned char stack_size; | |
69 | ||
70 | /* For function symbols, arguments (if any) for movm instruction | |
71 | in the prologue. We stuff this value into "call" instructions | |
72 | to the target when it's valid and profitable to do so. */ | |
73 | unsigned char movm_args; | |
74 | ||
4cc11e76 | 75 | /* For function symbols, the amount of stack space that would be allocated |
252b5132 RH |
76 | by the movm instruction. This is redundant with movm_args, but we |
77 | add it to the hash table to avoid computing it over and over. */ | |
78 | unsigned char movm_stack_size; | |
79 | ||
80 | /* When set, convert all "call" instructions to this target into "calls" | |
81 | instructions. */ | |
82 | #define MN10300_CONVERT_CALL_TO_CALLS 0x1 | |
83 | ||
84 | /* Used to mark functions which have had redundant parts of their | |
85 | prologue deleted. */ | |
86 | #define MN10300_DELETED_PROLOGUE_BYTES 0x2 | |
87 | unsigned char flags; | |
88 | }; | |
89 | ||
90 | /* We derive a hash table from the main elf linker hash table so | |
91 | we can store state variables and a secondary hash table without | |
92 | resorting to global variables. */ | |
010ac81f | 93 | struct elf32_mn10300_link_hash_table { |
252b5132 RH |
94 | /* The main hash table. */ |
95 | struct elf_link_hash_table root; | |
96 | ||
97 | /* A hash table for static functions. We could derive a new hash table | |
98 | instead of using the full elf32_mn10300_link_hash_table if we wanted | |
99 | to save some memory. */ | |
100 | struct elf32_mn10300_link_hash_table *static_hash_table; | |
101 | ||
102 | /* Random linker state flags. */ | |
103 | #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 | |
104 | char flags; | |
105 | }; | |
106 | ||
107 | /* For MN10300 linker hash table. */ | |
108 | ||
109 | /* Get the MN10300 ELF linker hash table from a link_info structure. */ | |
110 | ||
111 | #define elf32_mn10300_hash_table(p) \ | |
112 | ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) | |
113 | ||
114 | #define elf32_mn10300_link_hash_traverse(table, func, info) \ | |
115 | (elf_link_hash_traverse \ | |
116 | (&(table)->root, \ | |
b34976b6 | 117 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
252b5132 RH |
118 | (info))) |
119 | ||
120 | static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc | |
121 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
122 | static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create | |
123 | PARAMS ((bfd *)); | |
e2d34d7d DJ |
124 | static void elf32_mn10300_link_hash_table_free |
125 | PARAMS ((struct bfd_link_hash_table *)); | |
252b5132 RH |
126 | |
127 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
128 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
129 | static void mn10300_info_to_howto | |
947216bf | 130 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 | 131 | static bfd_boolean mn10300_elf_check_relocs |
252b5132 RH |
132 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
133 | const Elf_Internal_Rela *)); | |
134 | static asection *mn10300_elf_gc_mark_hook | |
1e2f5b6e | 135 | PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *, |
252b5132 | 136 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 137 | static bfd_boolean mn10300_elf_relax_delete_bytes |
252b5132 | 138 | PARAMS ((bfd *, asection *, bfd_vma, int)); |
b34976b6 AM |
139 | static bfd_boolean mn10300_elf_symbol_address_p |
140 | PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma)); | |
141 | static bfd_boolean elf32_mn10300_finish_hash_table_entry | |
252b5132 RH |
142 | PARAMS ((struct bfd_hash_entry *, PTR)); |
143 | static void compute_function_info | |
144 | PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *, | |
145 | bfd_vma, unsigned char *)); | |
146 | ||
03a12831 AO |
147 | static bfd_boolean _bfd_mn10300_elf_create_got_section |
148 | PARAMS ((bfd *, struct bfd_link_info *)); | |
149 | static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections | |
150 | PARAMS ((bfd *, struct bfd_link_info *)); | |
151 | static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol | |
152 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
03a12831 AO |
153 | static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections |
154 | PARAMS ((bfd *, struct bfd_link_info *)); | |
155 | static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol | |
156 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
157 | Elf_Internal_Sym *)); | |
158 | static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections | |
159 | PARAMS ((bfd *, struct bfd_link_info *)); | |
160 | ||
010ac81f | 161 | static reloc_howto_type elf_mn10300_howto_table[] = { |
252b5132 RH |
162 | /* Dummy relocation. Does nothing. */ |
163 | HOWTO (R_MN10300_NONE, | |
164 | 0, | |
165 | 2, | |
166 | 16, | |
b34976b6 | 167 | FALSE, |
252b5132 RH |
168 | 0, |
169 | complain_overflow_bitfield, | |
170 | bfd_elf_generic_reloc, | |
171 | "R_MN10300_NONE", | |
b34976b6 | 172 | FALSE, |
252b5132 RH |
173 | 0, |
174 | 0, | |
b34976b6 | 175 | FALSE), |
252b5132 RH |
176 | /* Standard 32 bit reloc. */ |
177 | HOWTO (R_MN10300_32, | |
178 | 0, | |
179 | 2, | |
180 | 32, | |
b34976b6 | 181 | FALSE, |
252b5132 RH |
182 | 0, |
183 | complain_overflow_bitfield, | |
184 | bfd_elf_generic_reloc, | |
185 | "R_MN10300_32", | |
b34976b6 | 186 | FALSE, |
252b5132 RH |
187 | 0xffffffff, |
188 | 0xffffffff, | |
b34976b6 | 189 | FALSE), |
252b5132 RH |
190 | /* Standard 16 bit reloc. */ |
191 | HOWTO (R_MN10300_16, | |
192 | 0, | |
193 | 1, | |
194 | 16, | |
b34976b6 | 195 | FALSE, |
252b5132 RH |
196 | 0, |
197 | complain_overflow_bitfield, | |
198 | bfd_elf_generic_reloc, | |
199 | "R_MN10300_16", | |
b34976b6 | 200 | FALSE, |
252b5132 RH |
201 | 0xffff, |
202 | 0xffff, | |
b34976b6 | 203 | FALSE), |
252b5132 RH |
204 | /* Standard 8 bit reloc. */ |
205 | HOWTO (R_MN10300_8, | |
206 | 0, | |
207 | 0, | |
208 | 8, | |
b34976b6 | 209 | FALSE, |
252b5132 RH |
210 | 0, |
211 | complain_overflow_bitfield, | |
212 | bfd_elf_generic_reloc, | |
213 | "R_MN10300_8", | |
b34976b6 | 214 | FALSE, |
252b5132 RH |
215 | 0xff, |
216 | 0xff, | |
b34976b6 | 217 | FALSE), |
252b5132 RH |
218 | /* Standard 32bit pc-relative reloc. */ |
219 | HOWTO (R_MN10300_PCREL32, | |
220 | 0, | |
221 | 2, | |
222 | 32, | |
b34976b6 | 223 | TRUE, |
252b5132 RH |
224 | 0, |
225 | complain_overflow_bitfield, | |
226 | bfd_elf_generic_reloc, | |
227 | "R_MN10300_PCREL32", | |
b34976b6 | 228 | FALSE, |
252b5132 RH |
229 | 0xffffffff, |
230 | 0xffffffff, | |
b34976b6 | 231 | TRUE), |
252b5132 RH |
232 | /* Standard 16bit pc-relative reloc. */ |
233 | HOWTO (R_MN10300_PCREL16, | |
234 | 0, | |
235 | 1, | |
236 | 16, | |
b34976b6 | 237 | TRUE, |
252b5132 RH |
238 | 0, |
239 | complain_overflow_bitfield, | |
240 | bfd_elf_generic_reloc, | |
241 | "R_MN10300_PCREL16", | |
b34976b6 | 242 | FALSE, |
252b5132 RH |
243 | 0xffff, |
244 | 0xffff, | |
b34976b6 | 245 | TRUE), |
252b5132 RH |
246 | /* Standard 8 pc-relative reloc. */ |
247 | HOWTO (R_MN10300_PCREL8, | |
248 | 0, | |
249 | 0, | |
250 | 8, | |
b34976b6 | 251 | TRUE, |
252b5132 RH |
252 | 0, |
253 | complain_overflow_bitfield, | |
254 | bfd_elf_generic_reloc, | |
255 | "R_MN10300_PCREL8", | |
b34976b6 | 256 | FALSE, |
252b5132 RH |
257 | 0xff, |
258 | 0xff, | |
b34976b6 | 259 | TRUE), |
252b5132 RH |
260 | |
261 | /* GNU extension to record C++ vtable hierarchy */ | |
262 | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ | |
263 | 0, /* rightshift */ | |
264 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
265 | 0, /* bitsize */ | |
b34976b6 | 266 | FALSE, /* pc_relative */ |
252b5132 RH |
267 | 0, /* bitpos */ |
268 | complain_overflow_dont, /* complain_on_overflow */ | |
269 | NULL, /* special_function */ | |
270 | "R_MN10300_GNU_VTINHERIT", /* name */ | |
b34976b6 | 271 | FALSE, /* partial_inplace */ |
252b5132 RH |
272 | 0, /* src_mask */ |
273 | 0, /* dst_mask */ | |
b34976b6 | 274 | FALSE), /* pcrel_offset */ |
252b5132 RH |
275 | |
276 | /* GNU extension to record C++ vtable member usage */ | |
277 | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 0, /* bitsize */ | |
b34976b6 | 281 | FALSE, /* pc_relative */ |
252b5132 RH |
282 | 0, /* bitpos */ |
283 | complain_overflow_dont, /* complain_on_overflow */ | |
284 | NULL, /* special_function */ | |
285 | "R_MN10300_GNU_VTENTRY", /* name */ | |
b34976b6 | 286 | FALSE, /* partial_inplace */ |
252b5132 RH |
287 | 0, /* src_mask */ |
288 | 0, /* dst_mask */ | |
b34976b6 | 289 | FALSE), /* pcrel_offset */ |
252b5132 RH |
290 | |
291 | /* Standard 24 bit reloc. */ | |
292 | HOWTO (R_MN10300_24, | |
293 | 0, | |
294 | 2, | |
295 | 24, | |
b34976b6 | 296 | FALSE, |
252b5132 RH |
297 | 0, |
298 | complain_overflow_bitfield, | |
299 | bfd_elf_generic_reloc, | |
300 | "R_MN10300_24", | |
b34976b6 | 301 | FALSE, |
252b5132 RH |
302 | 0xffffff, |
303 | 0xffffff, | |
b34976b6 | 304 | FALSE), |
03a12831 AO |
305 | HOWTO (R_MN10300_GOTPC32, /* type */ |
306 | 0, /* rightshift */ | |
307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 32, /* bitsize */ | |
309 | TRUE, /* pc_relative */ | |
310 | 0, /* bitpos */ | |
311 | complain_overflow_bitfield, /* complain_on_overflow */ | |
312 | bfd_elf_generic_reloc, /* */ | |
313 | "R_MN10300_GOTPC32", /* name */ | |
314 | FALSE, /* partial_inplace */ | |
315 | 0xffffffff, /* src_mask */ | |
316 | 0xffffffff, /* dst_mask */ | |
317 | TRUE), /* pcrel_offset */ | |
318 | ||
319 | HOWTO (R_MN10300_GOTPC16, /* type */ | |
320 | 0, /* rightshift */ | |
321 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
322 | 16, /* bitsize */ | |
323 | TRUE, /* pc_relative */ | |
324 | 0, /* bitpos */ | |
325 | complain_overflow_bitfield, /* complain_on_overflow */ | |
326 | bfd_elf_generic_reloc, /* */ | |
327 | "R_MN10300_GOTPC16", /* name */ | |
328 | FALSE, /* partial_inplace */ | |
329 | 0xffff, /* src_mask */ | |
330 | 0xffff, /* dst_mask */ | |
331 | TRUE), /* pcrel_offset */ | |
332 | ||
333 | HOWTO (R_MN10300_GOTOFF32, /* type */ | |
334 | 0, /* rightshift */ | |
335 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
336 | 32, /* bitsize */ | |
337 | FALSE, /* pc_relative */ | |
338 | 0, /* bitpos */ | |
339 | complain_overflow_bitfield, /* complain_on_overflow */ | |
340 | bfd_elf_generic_reloc, /* */ | |
341 | "R_MN10300_GOTOFF32", /* name */ | |
342 | FALSE, /* partial_inplace */ | |
343 | 0xffffffff, /* src_mask */ | |
344 | 0xffffffff, /* dst_mask */ | |
345 | FALSE), /* pcrel_offset */ | |
346 | ||
347 | HOWTO (R_MN10300_GOTOFF24, /* type */ | |
348 | 0, /* rightshift */ | |
349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
350 | 24, /* bitsize */ | |
351 | FALSE, /* pc_relative */ | |
352 | 0, /* bitpos */ | |
353 | complain_overflow_bitfield, /* complain_on_overflow */ | |
354 | bfd_elf_generic_reloc, /* */ | |
355 | "R_MN10300_GOTOFF24", /* name */ | |
356 | FALSE, /* partial_inplace */ | |
357 | 0xffffff, /* src_mask */ | |
358 | 0xffffff, /* dst_mask */ | |
359 | FALSE), /* pcrel_offset */ | |
360 | ||
361 | HOWTO (R_MN10300_GOTOFF16, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 16, /* bitsize */ | |
365 | FALSE, /* pc_relative */ | |
366 | 0, /* bitpos */ | |
367 | complain_overflow_bitfield, /* complain_on_overflow */ | |
368 | bfd_elf_generic_reloc, /* */ | |
369 | "R_MN10300_GOTOFF16", /* name */ | |
370 | FALSE, /* partial_inplace */ | |
371 | 0xffff, /* src_mask */ | |
372 | 0xffff, /* dst_mask */ | |
373 | FALSE), /* pcrel_offset */ | |
374 | ||
375 | HOWTO (R_MN10300_PLT32, /* type */ | |
376 | 0, /* rightshift */ | |
377 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
378 | 32, /* bitsize */ | |
379 | TRUE, /* pc_relative */ | |
380 | 0, /* bitpos */ | |
381 | complain_overflow_bitfield, /* complain_on_overflow */ | |
382 | bfd_elf_generic_reloc, /* */ | |
383 | "R_MN10300_PLT32", /* name */ | |
384 | FALSE, /* partial_inplace */ | |
385 | 0xffffffff, /* src_mask */ | |
386 | 0xffffffff, /* dst_mask */ | |
387 | TRUE), /* pcrel_offset */ | |
388 | ||
389 | HOWTO (R_MN10300_PLT16, /* type */ | |
390 | 0, /* rightshift */ | |
391 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
392 | 16, /* bitsize */ | |
393 | TRUE, /* pc_relative */ | |
394 | 0, /* bitpos */ | |
395 | complain_overflow_bitfield, /* complain_on_overflow */ | |
396 | bfd_elf_generic_reloc, /* */ | |
397 | "R_MN10300_PLT16", /* name */ | |
398 | FALSE, /* partial_inplace */ | |
399 | 0xffff, /* src_mask */ | |
400 | 0xffff, /* dst_mask */ | |
401 | TRUE), /* pcrel_offset */ | |
402 | ||
403 | HOWTO (R_MN10300_GOT32, /* type */ | |
404 | 0, /* rightshift */ | |
405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 32, /* bitsize */ | |
407 | FALSE, /* pc_relative */ | |
408 | 0, /* bitpos */ | |
409 | complain_overflow_bitfield, /* complain_on_overflow */ | |
410 | bfd_elf_generic_reloc, /* */ | |
411 | "R_MN10300_GOT32", /* name */ | |
412 | FALSE, /* partial_inplace */ | |
413 | 0xffffffff, /* src_mask */ | |
414 | 0xffffffff, /* dst_mask */ | |
415 | FALSE), /* pcrel_offset */ | |
416 | ||
417 | HOWTO (R_MN10300_GOT24, /* type */ | |
418 | 0, /* rightshift */ | |
419 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
420 | 24, /* bitsize */ | |
421 | FALSE, /* pc_relative */ | |
422 | 0, /* bitpos */ | |
423 | complain_overflow_bitfield, /* complain_on_overflow */ | |
424 | bfd_elf_generic_reloc, /* */ | |
425 | "R_MN10300_GOT24", /* name */ | |
426 | FALSE, /* partial_inplace */ | |
427 | 0xffffffff, /* src_mask */ | |
428 | 0xffffffff, /* dst_mask */ | |
429 | FALSE), /* pcrel_offset */ | |
430 | ||
431 | HOWTO (R_MN10300_GOT16, /* type */ | |
432 | 0, /* rightshift */ | |
433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 16, /* bitsize */ | |
435 | FALSE, /* pc_relative */ | |
436 | 0, /* bitpos */ | |
437 | complain_overflow_bitfield, /* complain_on_overflow */ | |
438 | bfd_elf_generic_reloc, /* */ | |
439 | "R_MN10300_GOT16", /* name */ | |
440 | FALSE, /* partial_inplace */ | |
441 | 0xffffffff, /* src_mask */ | |
442 | 0xffffffff, /* dst_mask */ | |
443 | FALSE), /* pcrel_offset */ | |
444 | ||
445 | HOWTO (R_MN10300_COPY, /* type */ | |
446 | 0, /* rightshift */ | |
447 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
448 | 32, /* bitsize */ | |
449 | FALSE, /* pc_relative */ | |
450 | 0, /* bitpos */ | |
451 | complain_overflow_bitfield, /* complain_on_overflow */ | |
452 | bfd_elf_generic_reloc, /* */ | |
453 | "R_MN10300_COPY", /* name */ | |
454 | FALSE, /* partial_inplace */ | |
455 | 0xffffffff, /* src_mask */ | |
456 | 0xffffffff, /* dst_mask */ | |
457 | FALSE), /* pcrel_offset */ | |
458 | ||
459 | HOWTO (R_MN10300_GLOB_DAT, /* type */ | |
460 | 0, /* rightshift */ | |
461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
462 | 32, /* bitsize */ | |
463 | FALSE, /* pc_relative */ | |
464 | 0, /* bitpos */ | |
465 | complain_overflow_bitfield, /* complain_on_overflow */ | |
466 | bfd_elf_generic_reloc, /* */ | |
467 | "R_MN10300_GLOB_DAT", /* name */ | |
468 | FALSE, /* partial_inplace */ | |
469 | 0xffffffff, /* src_mask */ | |
470 | 0xffffffff, /* dst_mask */ | |
471 | FALSE), /* pcrel_offset */ | |
472 | ||
473 | HOWTO (R_MN10300_JMP_SLOT, /* type */ | |
474 | 0, /* rightshift */ | |
475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
476 | 32, /* bitsize */ | |
477 | FALSE, /* pc_relative */ | |
478 | 0, /* bitpos */ | |
479 | complain_overflow_bitfield, /* complain_on_overflow */ | |
480 | bfd_elf_generic_reloc, /* */ | |
481 | "R_MN10300_JMP_SLOT", /* name */ | |
482 | FALSE, /* partial_inplace */ | |
483 | 0xffffffff, /* src_mask */ | |
484 | 0xffffffff, /* dst_mask */ | |
485 | FALSE), /* pcrel_offset */ | |
486 | ||
487 | HOWTO (R_MN10300_RELATIVE, /* type */ | |
488 | 0, /* rightshift */ | |
489 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
490 | 32, /* bitsize */ | |
491 | FALSE, /* pc_relative */ | |
492 | 0, /* bitpos */ | |
493 | complain_overflow_bitfield, /* complain_on_overflow */ | |
494 | bfd_elf_generic_reloc, /* */ | |
495 | "R_MN10300_RELATIVE", /* name */ | |
496 | FALSE, /* partial_inplace */ | |
497 | 0xffffffff, /* src_mask */ | |
498 | 0xffffffff, /* dst_mask */ | |
499 | FALSE), /* pcrel_offset */ | |
500 | ||
252b5132 RH |
501 | }; |
502 | ||
010ac81f | 503 | struct mn10300_reloc_map { |
252b5132 RH |
504 | bfd_reloc_code_real_type bfd_reloc_val; |
505 | unsigned char elf_reloc_val; | |
506 | }; | |
507 | ||
010ac81f | 508 | static const struct mn10300_reloc_map mn10300_reloc_map[] = { |
252b5132 RH |
509 | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
510 | { BFD_RELOC_32, R_MN10300_32, }, | |
511 | { BFD_RELOC_16, R_MN10300_16, }, | |
512 | { BFD_RELOC_8, R_MN10300_8, }, | |
513 | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, | |
514 | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, | |
515 | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, | |
516 | { BFD_RELOC_24, R_MN10300_24, }, | |
517 | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, | |
518 | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, | |
03a12831 AO |
519 | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
520 | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, | |
521 | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, | |
522 | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, | |
523 | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, | |
524 | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, | |
525 | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, | |
526 | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, | |
527 | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, | |
528 | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, | |
529 | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, | |
530 | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, | |
531 | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, | |
532 | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, | |
252b5132 RH |
533 | }; |
534 | ||
03a12831 AO |
535 | /* Create the GOT section. */ |
536 | ||
537 | static bfd_boolean | |
538 | _bfd_mn10300_elf_create_got_section (abfd, info) | |
539 | bfd * abfd; | |
540 | struct bfd_link_info * info; | |
541 | { | |
542 | flagword flags; | |
543 | flagword pltflags; | |
544 | asection * s; | |
140fae3f | 545 | struct bfd_link_hash_entry * bh; |
03a12831 | 546 | struct elf_link_hash_entry * h; |
9c5bfbb7 | 547 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
548 | int ptralign; |
549 | ||
550 | /* This function may be called more than once. */ | |
551 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
552 | return TRUE; | |
553 | ||
554 | switch (bed->s->arch_size) | |
555 | { | |
556 | case 32: | |
557 | ptralign = 2; | |
558 | break; | |
559 | ||
560 | case 64: | |
561 | ptralign = 3; | |
562 | break; | |
563 | ||
564 | default: | |
565 | bfd_set_error (bfd_error_bad_value); | |
566 | return FALSE; | |
567 | } | |
568 | ||
569 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
570 | | SEC_LINKER_CREATED); | |
571 | ||
572 | pltflags = flags; | |
573 | pltflags |= SEC_CODE; | |
574 | if (bed->plt_not_loaded) | |
575 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
576 | if (bed->plt_readonly) | |
577 | pltflags |= SEC_READONLY; | |
578 | ||
579 | s = bfd_make_section (abfd, ".plt"); | |
580 | if (s == NULL | |
581 | || ! bfd_set_section_flags (abfd, s, pltflags) | |
582 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
583 | return FALSE; | |
584 | ||
585 | if (bed->want_plt_sym) | |
586 | { | |
587 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
588 | .plt section. */ | |
140fae3f | 589 | bh = NULL; |
03a12831 AO |
590 | if (! (_bfd_generic_link_add_one_symbol |
591 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
592 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
140fae3f | 593 | get_elf_backend_data (abfd)->collect, &bh))) |
03a12831 | 594 | return FALSE; |
140fae3f | 595 | h = (struct elf_link_hash_entry *) bh; |
f5385ebf | 596 | h->def_regular = 1; |
03a12831 AO |
597 | h->type = STT_OBJECT; |
598 | ||
599 | if (info->shared | |
c152c796 | 600 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
601 | return FALSE; |
602 | } | |
603 | ||
604 | s = bfd_make_section (abfd, ".got"); | |
605 | if (s == NULL | |
606 | || ! bfd_set_section_flags (abfd, s, flags) | |
607 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
608 | return FALSE; | |
609 | ||
610 | if (bed->want_got_plt) | |
611 | { | |
612 | s = bfd_make_section (abfd, ".got.plt"); | |
613 | if (s == NULL | |
614 | || ! bfd_set_section_flags (abfd, s, flags) | |
615 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
616 | return FALSE; | |
617 | } | |
618 | ||
619 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
620 | (or .got.plt) section. We don't do this in the linker script | |
621 | because we don't want to define the symbol if we are not creating | |
622 | a global offset table. */ | |
140fae3f | 623 | bh = NULL; |
03a12831 AO |
624 | if (!(_bfd_generic_link_add_one_symbol |
625 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
626 | bed->got_symbol_offset, (const char *) NULL, FALSE, | |
140fae3f | 627 | bed->collect, &bh))) |
03a12831 | 628 | return FALSE; |
140fae3f | 629 | h = (struct elf_link_hash_entry *) bh; |
f5385ebf | 630 | h->def_regular = 1; |
03a12831 AO |
631 | h->type = STT_OBJECT; |
632 | ||
633 | if (info->shared | |
c152c796 | 634 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
635 | return FALSE; |
636 | ||
637 | elf_hash_table (info)->hgot = h; | |
638 | ||
639 | /* The first bit of the global offset table is the header. */ | |
eea6121a | 640 | s->size += bed->got_header_size + bed->got_symbol_offset; |
03a12831 AO |
641 | |
642 | return TRUE; | |
643 | } | |
644 | ||
252b5132 RH |
645 | static reloc_howto_type * |
646 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
5f771d47 | 647 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
648 | bfd_reloc_code_real_type code; |
649 | { | |
650 | unsigned int i; | |
651 | ||
652 | for (i = 0; | |
653 | i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map); | |
654 | i++) | |
655 | { | |
656 | if (mn10300_reloc_map[i].bfd_reloc_val == code) | |
657 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; | |
658 | } | |
659 | ||
660 | return NULL; | |
661 | } | |
662 | ||
663 | /* Set the howto pointer for an MN10300 ELF reloc. */ | |
664 | ||
665 | static void | |
666 | mn10300_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 667 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 668 | arelent *cache_ptr; |
947216bf | 669 | Elf_Internal_Rela *dst; |
252b5132 RH |
670 | { |
671 | unsigned int r_type; | |
672 | ||
673 | r_type = ELF32_R_TYPE (dst->r_info); | |
674 | BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); | |
675 | cache_ptr->howto = &elf_mn10300_howto_table[r_type]; | |
676 | } | |
677 | ||
678 | /* Look through the relocs for a section during the first phase. | |
679 | Since we don't do .gots or .plts, we just need to consider the | |
680 | virtual table relocs for gc. */ | |
681 | ||
b34976b6 | 682 | static bfd_boolean |
252b5132 RH |
683 | mn10300_elf_check_relocs (abfd, info, sec, relocs) |
684 | bfd *abfd; | |
685 | struct bfd_link_info *info; | |
686 | asection *sec; | |
687 | const Elf_Internal_Rela *relocs; | |
688 | { | |
689 | Elf_Internal_Shdr *symtab_hdr; | |
690 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
691 | const Elf_Internal_Rela *rel; | |
692 | const Elf_Internal_Rela *rel_end; | |
03a12831 AO |
693 | bfd * dynobj; |
694 | bfd_vma * local_got_offsets; | |
695 | asection * sgot; | |
696 | asection * srelgot; | |
697 | asection * sreloc; | |
698 | ||
699 | sgot = NULL; | |
700 | srelgot = NULL; | |
701 | sreloc = NULL; | |
252b5132 | 702 | |
1049f94e | 703 | if (info->relocatable) |
b34976b6 | 704 | return TRUE; |
252b5132 RH |
705 | |
706 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
707 | sym_hashes = elf_sym_hashes (abfd); | |
a7c10850 | 708 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
252b5132 RH |
709 | if (!elf_bad_symtab (abfd)) |
710 | sym_hashes_end -= symtab_hdr->sh_info; | |
711 | ||
03a12831 AO |
712 | dynobj = elf_hash_table (info)->dynobj; |
713 | local_got_offsets = elf_local_got_offsets (abfd); | |
252b5132 RH |
714 | rel_end = relocs + sec->reloc_count; |
715 | for (rel = relocs; rel < rel_end; rel++) | |
716 | { | |
717 | struct elf_link_hash_entry *h; | |
718 | unsigned long r_symndx; | |
719 | ||
720 | r_symndx = ELF32_R_SYM (rel->r_info); | |
721 | if (r_symndx < symtab_hdr->sh_info) | |
722 | h = NULL; | |
723 | else | |
724 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
725 | ||
03a12831 AO |
726 | /* Some relocs require a global offset table. */ |
727 | if (dynobj == NULL) | |
728 | { | |
729 | switch (ELF32_R_TYPE (rel->r_info)) | |
730 | { | |
731 | case R_MN10300_GOT32: | |
732 | case R_MN10300_GOT24: | |
733 | case R_MN10300_GOT16: | |
734 | case R_MN10300_GOTOFF32: | |
735 | case R_MN10300_GOTOFF24: | |
736 | case R_MN10300_GOTOFF16: | |
737 | case R_MN10300_GOTPC32: | |
738 | case R_MN10300_GOTPC16: | |
739 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
740 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) | |
741 | return FALSE; | |
742 | break; | |
743 | ||
744 | default: | |
745 | break; | |
746 | } | |
747 | } | |
748 | ||
252b5132 RH |
749 | switch (ELF32_R_TYPE (rel->r_info)) |
750 | { | |
751 | /* This relocation describes the C++ object vtable hierarchy. | |
752 | Reconstruct it for later use during GC. */ | |
753 | case R_MN10300_GNU_VTINHERIT: | |
c152c796 | 754 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 755 | return FALSE; |
252b5132 RH |
756 | break; |
757 | ||
758 | /* This relocation describes which C++ vtable entries are actually | |
759 | used. Record for later use during GC. */ | |
760 | case R_MN10300_GNU_VTENTRY: | |
c152c796 | 761 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 762 | return FALSE; |
252b5132 | 763 | break; |
03a12831 AO |
764 | case R_MN10300_GOT32: |
765 | case R_MN10300_GOT24: | |
766 | case R_MN10300_GOT16: | |
767 | /* This symbol requires a global offset table entry. */ | |
768 | ||
769 | if (sgot == NULL) | |
770 | { | |
771 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
772 | BFD_ASSERT (sgot != NULL); | |
773 | } | |
774 | ||
775 | if (srelgot == NULL | |
776 | && (h != NULL || info->shared)) | |
777 | { | |
778 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
779 | if (srelgot == NULL) | |
780 | { | |
781 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
782 | if (srelgot == NULL | |
783 | || ! bfd_set_section_flags (dynobj, srelgot, | |
784 | (SEC_ALLOC | |
785 | | SEC_LOAD | |
786 | | SEC_HAS_CONTENTS | |
787 | | SEC_IN_MEMORY | |
788 | | SEC_LINKER_CREATED | |
789 | | SEC_READONLY)) | |
790 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
791 | return FALSE; | |
792 | } | |
793 | } | |
794 | ||
795 | if (h != NULL) | |
796 | { | |
797 | if (h->got.offset != (bfd_vma) -1) | |
798 | /* We have already allocated space in the .got. */ | |
799 | break; | |
800 | ||
eea6121a | 801 | h->got.offset = sgot->size; |
03a12831 AO |
802 | |
803 | /* Make sure this symbol is output as a dynamic symbol. */ | |
804 | if (h->dynindx == -1) | |
805 | { | |
c152c796 | 806 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
807 | return FALSE; |
808 | } | |
809 | ||
eea6121a | 810 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
811 | } |
812 | else | |
813 | { | |
814 | /* This is a global offset table entry for a local | |
815 | symbol. */ | |
816 | if (local_got_offsets == NULL) | |
817 | { | |
818 | size_t size; | |
819 | unsigned int i; | |
820 | ||
821 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
822 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
823 | ||
824 | if (local_got_offsets == NULL) | |
825 | return FALSE; | |
826 | elf_local_got_offsets (abfd) = local_got_offsets; | |
827 | ||
828 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
829 | local_got_offsets[i] = (bfd_vma) -1; | |
830 | } | |
831 | ||
832 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
833 | /* We have already allocated space in the .got. */ | |
834 | break; | |
835 | ||
eea6121a | 836 | local_got_offsets[r_symndx] = sgot->size; |
03a12831 AO |
837 | |
838 | if (info->shared) | |
839 | /* If we are generating a shared object, we need to | |
840 | output a R_MN10300_RELATIVE reloc so that the dynamic | |
841 | linker can adjust this GOT entry. */ | |
eea6121a | 842 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
843 | } |
844 | ||
eea6121a | 845 | sgot->size += 4; |
03a12831 AO |
846 | |
847 | break; | |
848 | ||
849 | case R_MN10300_PLT32: | |
850 | case R_MN10300_PLT16: | |
851 | /* This symbol requires a procedure linkage table entry. We | |
852 | actually build the entry in adjust_dynamic_symbol, | |
853 | because this might be a case of linking PIC code which is | |
854 | never referenced by a dynamic object, in which case we | |
855 | don't need to generate a procedure linkage table entry | |
856 | after all. */ | |
857 | ||
858 | /* If this is a local symbol, we resolve it directly without | |
859 | creating a procedure linkage table entry. */ | |
860 | if (h == NULL) | |
861 | continue; | |
862 | ||
863 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
864 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
865 | break; | |
866 | ||
f5385ebf | 867 | h->needs_plt = 1; |
03a12831 AO |
868 | |
869 | break; | |
870 | ||
03a12831 AO |
871 | case R_MN10300_24: |
872 | case R_MN10300_16: | |
873 | case R_MN10300_8: | |
874 | case R_MN10300_PCREL32: | |
875 | case R_MN10300_PCREL16: | |
876 | case R_MN10300_PCREL8: | |
877 | if (h != NULL) | |
f5385ebf | 878 | h->non_got_ref = 1; |
146ccdbb | 879 | break; |
03a12831 | 880 | |
146ccdbb AO |
881 | case R_MN10300_32: |
882 | if (h != NULL) | |
f5385ebf | 883 | h->non_got_ref = 1; |
146ccdbb AO |
884 | |
885 | /* If we are creating a shared library, then we need to copy | |
886 | the reloc into the shared library. */ | |
03a12831 | 887 | if (info->shared |
146ccdbb | 888 | && (sec->flags & SEC_ALLOC) != 0) |
03a12831 AO |
889 | { |
890 | /* When creating a shared object, we must copy these | |
891 | reloc types into the output file. We create a reloc | |
892 | section in dynobj and make room for this reloc. */ | |
893 | if (sreloc == NULL) | |
894 | { | |
895 | const char * name; | |
896 | ||
897 | name = (bfd_elf_string_from_elf_section | |
898 | (abfd, | |
899 | elf_elfheader (abfd)->e_shstrndx, | |
900 | elf_section_data (sec)->rel_hdr.sh_name)); | |
901 | if (name == NULL) | |
902 | return FALSE; | |
903 | ||
904 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
905 | && strcmp (bfd_get_section_name (abfd, sec), | |
906 | name + 5) == 0); | |
907 | ||
908 | sreloc = bfd_get_section_by_name (dynobj, name); | |
909 | if (sreloc == NULL) | |
910 | { | |
911 | flagword flags; | |
912 | ||
913 | sreloc = bfd_make_section (dynobj, name); | |
914 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
915 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
916 | if ((sec->flags & SEC_ALLOC) != 0) | |
917 | flags |= SEC_ALLOC | SEC_LOAD; | |
918 | if (sreloc == NULL | |
919 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
920 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
921 | return FALSE; | |
922 | } | |
923 | } | |
924 | ||
eea6121a | 925 | sreloc->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
926 | } |
927 | ||
928 | break; | |
252b5132 RH |
929 | } |
930 | } | |
931 | ||
b34976b6 | 932 | return TRUE; |
252b5132 RH |
933 | } |
934 | ||
935 | /* Return the section that should be marked against GC for a given | |
936 | relocation. */ | |
937 | ||
938 | static asection * | |
1e2f5b6e AM |
939 | mn10300_elf_gc_mark_hook (sec, info, rel, h, sym) |
940 | asection *sec; | |
5f771d47 | 941 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
942 | Elf_Internal_Rela *rel; |
943 | struct elf_link_hash_entry *h; | |
944 | Elf_Internal_Sym *sym; | |
945 | { | |
946 | if (h != NULL) | |
947 | { | |
948 | switch (ELF32_R_TYPE (rel->r_info)) | |
949 | { | |
950 | case R_MN10300_GNU_VTINHERIT: | |
951 | case R_MN10300_GNU_VTENTRY: | |
952 | break; | |
953 | ||
954 | default: | |
955 | switch (h->root.type) | |
956 | { | |
957 | case bfd_link_hash_defined: | |
958 | case bfd_link_hash_defweak: | |
959 | return h->root.u.def.section; | |
960 | ||
961 | case bfd_link_hash_common: | |
962 | return h->root.u.c.p->section; | |
e049a0de ILT |
963 | |
964 | default: | |
965 | break; | |
252b5132 RH |
966 | } |
967 | } | |
968 | } | |
969 | else | |
1e2f5b6e | 970 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
971 | |
972 | return NULL; | |
973 | } | |
974 | ||
975 | /* Perform a relocation as part of a final link. */ | |
976 | static bfd_reloc_status_type | |
977 | mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
978 | input_section, contents, offset, value, | |
03a12831 | 979 | addend, h, symndx, info, sym_sec, is_local) |
252b5132 RH |
980 | reloc_howto_type *howto; |
981 | bfd *input_bfd; | |
5f771d47 | 982 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
983 | asection *input_section; |
984 | bfd_byte *contents; | |
985 | bfd_vma offset; | |
986 | bfd_vma value; | |
987 | bfd_vma addend; | |
03a12831 AO |
988 | struct elf_link_hash_entry * h; |
989 | unsigned long symndx; | |
eea6121a | 990 | struct bfd_link_info *info; |
5f771d47 ILT |
991 | asection *sym_sec ATTRIBUTE_UNUSED; |
992 | int is_local ATTRIBUTE_UNUSED; | |
252b5132 RH |
993 | { |
994 | unsigned long r_type = howto->type; | |
995 | bfd_byte *hit_data = contents + offset; | |
03a12831 AO |
996 | bfd * dynobj; |
997 | bfd_vma * local_got_offsets; | |
998 | asection * sgot; | |
999 | asection * splt; | |
1000 | asection * sreloc; | |
1001 | ||
1002 | dynobj = elf_hash_table (info)->dynobj; | |
1003 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1004 | ||
1005 | sgot = NULL; | |
1006 | splt = NULL; | |
1007 | sreloc = NULL; | |
252b5132 | 1008 | |
146ccdbb AO |
1009 | switch (r_type) |
1010 | { | |
1011 | case R_MN10300_24: | |
1012 | case R_MN10300_16: | |
1013 | case R_MN10300_8: | |
1014 | case R_MN10300_PCREL8: | |
1015 | case R_MN10300_PCREL16: | |
1016 | case R_MN10300_PCREL32: | |
1017 | case R_MN10300_GOTOFF32: | |
1018 | case R_MN10300_GOTOFF24: | |
1019 | case R_MN10300_GOTOFF16: | |
1020 | if (info->shared | |
1021 | && (input_section->flags & SEC_ALLOC) != 0 | |
1022 | && h != NULL | |
7e2294f9 | 1023 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
146ccdbb AO |
1024 | return bfd_reloc_dangerous; |
1025 | } | |
1026 | ||
252b5132 RH |
1027 | switch (r_type) |
1028 | { | |
1029 | case R_MN10300_NONE: | |
1030 | return bfd_reloc_ok; | |
1031 | ||
1032 | case R_MN10300_32: | |
03a12831 AO |
1033 | if (info->shared |
1034 | && (input_section->flags & SEC_ALLOC) != 0) | |
1035 | { | |
1036 | Elf_Internal_Rela outrel; | |
1037 | bfd_boolean skip, relocate; | |
1038 | ||
1039 | /* When generating a shared object, these relocations are | |
1040 | copied into the output file to be resolved at run | |
1041 | time. */ | |
1042 | if (sreloc == NULL) | |
1043 | { | |
1044 | const char * name; | |
1045 | ||
1046 | name = (bfd_elf_string_from_elf_section | |
1047 | (input_bfd, | |
1048 | elf_elfheader (input_bfd)->e_shstrndx, | |
1049 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1050 | if (name == NULL) | |
1051 | return FALSE; | |
1052 | ||
1053 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1054 | && strcmp (bfd_get_section_name (input_bfd, | |
1055 | input_section), | |
1056 | name + 5) == 0); | |
1057 | ||
1058 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1059 | BFD_ASSERT (sreloc != NULL); | |
1060 | } | |
1061 | ||
1062 | skip = FALSE; | |
1063 | ||
eea6121a AM |
1064 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1065 | input_section, offset); | |
1066 | if (outrel.r_offset == (bfd_vma) -1) | |
1067 | skip = TRUE; | |
03a12831 AO |
1068 | |
1069 | outrel.r_offset += (input_section->output_section->vma | |
1070 | + input_section->output_offset); | |
1071 | ||
1072 | if (skip) | |
1073 | { | |
1074 | memset (&outrel, 0, sizeof outrel); | |
1075 | relocate = FALSE; | |
1076 | } | |
1077 | else | |
1078 | { | |
1079 | /* h->dynindx may be -1 if this symbol was marked to | |
1080 | become local. */ | |
1081 | if (h == NULL | |
7e2294f9 | 1082 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1083 | { |
1084 | relocate = TRUE; | |
1085 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1086 | outrel.r_addend = value + addend; | |
1087 | } | |
1088 | else | |
1089 | { | |
1090 | BFD_ASSERT (h->dynindx != -1); | |
1091 | relocate = FALSE; | |
1092 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1093 | outrel.r_addend = value + addend; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1098 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1099 | + sreloc->reloc_count)); | |
03a12831 AO |
1100 | ++sreloc->reloc_count; |
1101 | ||
1102 | /* If this reloc is against an external symbol, we do | |
1103 | not want to fiddle with the addend. Otherwise, we | |
1104 | need to include the symbol value so that it becomes | |
1105 | an addend for the dynamic reloc. */ | |
1106 | if (! relocate) | |
1107 | return bfd_reloc_ok; | |
1108 | } | |
252b5132 RH |
1109 | value += addend; |
1110 | bfd_put_32 (input_bfd, value, hit_data); | |
1111 | return bfd_reloc_ok; | |
1112 | ||
1113 | case R_MN10300_24: | |
1114 | value += addend; | |
1115 | ||
010ac81f | 1116 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1117 | return bfd_reloc_overflow; |
1118 | ||
1119 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1120 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1121 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1122 | return bfd_reloc_ok; | |
1123 | ||
1124 | case R_MN10300_16: | |
1125 | value += addend; | |
1126 | ||
010ac81f | 1127 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1128 | return bfd_reloc_overflow; |
1129 | ||
1130 | bfd_put_16 (input_bfd, value, hit_data); | |
1131 | return bfd_reloc_ok; | |
1132 | ||
1133 | case R_MN10300_8: | |
1134 | value += addend; | |
1135 | ||
010ac81f | 1136 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1137 | return bfd_reloc_overflow; |
1138 | ||
1139 | bfd_put_8 (input_bfd, value, hit_data); | |
1140 | return bfd_reloc_ok; | |
1141 | ||
1142 | case R_MN10300_PCREL8: | |
1143 | value -= (input_section->output_section->vma | |
1144 | + input_section->output_offset); | |
1145 | value -= offset; | |
1146 | value += addend; | |
1147 | ||
010ac81f | 1148 | if ((long) value > 0xff || (long) value < -0x100) |
252b5132 RH |
1149 | return bfd_reloc_overflow; |
1150 | ||
1151 | bfd_put_8 (input_bfd, value, hit_data); | |
1152 | return bfd_reloc_ok; | |
1153 | ||
1154 | case R_MN10300_PCREL16: | |
1155 | value -= (input_section->output_section->vma | |
1156 | + input_section->output_offset); | |
1157 | value -= offset; | |
1158 | value += addend; | |
1159 | ||
010ac81f | 1160 | if ((long) value > 0xffff || (long) value < -0x10000) |
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_PCREL32: | |
1167 | value -= (input_section->output_section->vma | |
1168 | + input_section->output_offset); | |
1169 | value -= offset; | |
1170 | value += addend; | |
1171 | ||
1172 | bfd_put_32 (input_bfd, value, hit_data); | |
1173 | return bfd_reloc_ok; | |
1174 | ||
1175 | case R_MN10300_GNU_VTINHERIT: | |
1176 | case R_MN10300_GNU_VTENTRY: | |
1177 | return bfd_reloc_ok; | |
1178 | ||
03a12831 AO |
1179 | case R_MN10300_GOTPC32: |
1180 | /* Use global offset table as symbol value. */ | |
1181 | ||
1182 | value = bfd_get_section_by_name (dynobj, | |
1183 | ".got")->output_section->vma; | |
1184 | value -= (input_section->output_section->vma | |
1185 | + input_section->output_offset); | |
1186 | value -= offset; | |
1187 | value += addend; | |
1188 | ||
1189 | bfd_put_32 (input_bfd, value, hit_data); | |
1190 | return bfd_reloc_ok; | |
1191 | ||
1192 | case R_MN10300_GOTPC16: | |
1193 | /* Use global offset table as symbol value. */ | |
1194 | ||
1195 | value = bfd_get_section_by_name (dynobj, | |
1196 | ".got")->output_section->vma; | |
1197 | value -= (input_section->output_section->vma | |
1198 | + input_section->output_offset); | |
1199 | value -= offset; | |
1200 | value += addend; | |
1201 | ||
1202 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1203 | return bfd_reloc_overflow; | |
1204 | ||
1205 | bfd_put_16 (input_bfd, value, hit_data); | |
1206 | return bfd_reloc_ok; | |
1207 | ||
1208 | case R_MN10300_GOTOFF32: | |
1209 | value -= bfd_get_section_by_name (dynobj, | |
1210 | ".got")->output_section->vma; | |
1211 | value += addend; | |
1212 | ||
1213 | bfd_put_32 (input_bfd, value, hit_data); | |
1214 | return bfd_reloc_ok; | |
1215 | ||
1216 | case R_MN10300_GOTOFF24: | |
1217 | value -= bfd_get_section_by_name (dynobj, | |
1218 | ".got")->output_section->vma; | |
1219 | value += addend; | |
1220 | ||
1221 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1222 | return bfd_reloc_overflow; | |
1223 | ||
1224 | bfd_put_8 (input_bfd, value, hit_data); | |
1225 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1226 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1227 | return bfd_reloc_ok; | |
1228 | ||
1229 | case R_MN10300_GOTOFF16: | |
1230 | value -= bfd_get_section_by_name (dynobj, | |
1231 | ".got")->output_section->vma; | |
1232 | value += addend; | |
1233 | ||
1234 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1235 | return bfd_reloc_overflow; | |
1236 | ||
1237 | bfd_put_16 (input_bfd, value, hit_data); | |
1238 | return bfd_reloc_ok; | |
1239 | ||
1240 | case R_MN10300_PLT32: | |
1241 | if (h != NULL | |
1242 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1243 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1244 | && h->plt.offset != (bfd_vma) -1) | |
1245 | { | |
1246 | asection * splt; | |
1247 | ||
1248 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1249 | ||
1250 | value = (splt->output_section->vma | |
1251 | + splt->output_offset | |
1252 | + h->plt.offset) - value; | |
1253 | } | |
1254 | ||
1255 | value -= (input_section->output_section->vma | |
1256 | + input_section->output_offset); | |
1257 | value -= offset; | |
1258 | value += addend; | |
1259 | ||
1260 | bfd_put_32 (input_bfd, value, hit_data); | |
1261 | return bfd_reloc_ok; | |
1262 | ||
1263 | case R_MN10300_PLT16: | |
1264 | if (h != NULL | |
1265 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1266 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1267 | && h->plt.offset != (bfd_vma) -1) | |
1268 | { | |
1269 | asection * splt; | |
1270 | ||
1271 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1272 | ||
1273 | value = (splt->output_section->vma | |
1274 | + splt->output_offset | |
1275 | + h->plt.offset) - value; | |
1276 | } | |
1277 | ||
1278 | value -= (input_section->output_section->vma | |
1279 | + input_section->output_offset); | |
1280 | value -= offset; | |
1281 | value += addend; | |
1282 | ||
1283 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1284 | return bfd_reloc_overflow; | |
1285 | ||
1286 | bfd_put_16 (input_bfd, value, hit_data); | |
1287 | return bfd_reloc_ok; | |
1288 | ||
1289 | case R_MN10300_GOT32: | |
1290 | case R_MN10300_GOT24: | |
1291 | case R_MN10300_GOT16: | |
1292 | { | |
1293 | asection * sgot; | |
1294 | ||
1295 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1296 | ||
1297 | if (h != NULL) | |
1298 | { | |
1299 | bfd_vma off; | |
1300 | ||
1301 | off = h->got.offset; | |
1302 | BFD_ASSERT (off != (bfd_vma) -1); | |
1303 | ||
1304 | if (! elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1305 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1306 | /* This is actually a static link, or it is a |
1307 | -Bsymbolic link and the symbol is defined | |
1308 | locally, or the symbol was forced to be local | |
1309 | because of a version file. We must initialize | |
1310 | this entry in the global offset table. | |
1311 | ||
1312 | When doing a dynamic link, we create a .rela.got | |
1313 | relocation entry to initialize the value. This | |
1314 | is done in the finish_dynamic_symbol routine. */ | |
1315 | bfd_put_32 (output_bfd, value, | |
1316 | sgot->contents + off); | |
1317 | ||
1318 | value = sgot->output_offset + off; | |
1319 | } | |
1320 | else | |
1321 | { | |
1322 | bfd_vma off; | |
1323 | ||
1324 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1325 | ||
1326 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
1327 | ||
1328 | if (info->shared) | |
1329 | { | |
1330 | asection * srelgot; | |
1331 | Elf_Internal_Rela outrel; | |
1332 | ||
1333 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1334 | BFD_ASSERT (srelgot != NULL); | |
1335 | ||
1336 | outrel.r_offset = (sgot->output_section->vma | |
1337 | + sgot->output_offset | |
1338 | + off); | |
1339 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1340 | outrel.r_addend = value; | |
1341 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1342 | (bfd_byte *) (((Elf32_External_Rela *) |
1343 | srelgot->contents) | |
1344 | + srelgot->reloc_count)); | |
03a12831 AO |
1345 | ++ srelgot->reloc_count; |
1346 | } | |
1347 | ||
1348 | value = sgot->output_offset + off; | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | value += addend; | |
1353 | ||
1354 | if (r_type == R_MN10300_GOT32) | |
1355 | { | |
1356 | bfd_put_32 (input_bfd, value, hit_data); | |
1357 | return bfd_reloc_ok; | |
1358 | } | |
1359 | else if (r_type == R_MN10300_GOT24) | |
1360 | { | |
1361 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1362 | return bfd_reloc_overflow; | |
1363 | ||
1364 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1365 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1366 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1367 | return bfd_reloc_ok; | |
1368 | } | |
1369 | else if (r_type == R_MN10300_GOT16) | |
1370 | { | |
1371 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1372 | return bfd_reloc_overflow; | |
1373 | ||
1374 | bfd_put_16 (input_bfd, value, hit_data); | |
1375 | return bfd_reloc_ok; | |
1376 | } | |
1377 | /* Fall through. */ | |
1378 | ||
252b5132 RH |
1379 | default: |
1380 | return bfd_reloc_notsupported; | |
1381 | } | |
1382 | } | |
252b5132 RH |
1383 | \f |
1384 | /* Relocate an MN10300 ELF section. */ | |
b34976b6 | 1385 | static bfd_boolean |
252b5132 RH |
1386 | mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
1387 | contents, relocs, local_syms, local_sections) | |
1388 | bfd *output_bfd; | |
1389 | struct bfd_link_info *info; | |
1390 | bfd *input_bfd; | |
1391 | asection *input_section; | |
1392 | bfd_byte *contents; | |
1393 | Elf_Internal_Rela *relocs; | |
1394 | Elf_Internal_Sym *local_syms; | |
1395 | asection **local_sections; | |
1396 | { | |
1397 | Elf_Internal_Shdr *symtab_hdr; | |
b2a8e766 | 1398 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
1399 | Elf_Internal_Rela *rel, *relend; |
1400 | ||
1049f94e | 1401 | if (info->relocatable) |
b34976b6 | 1402 | return TRUE; |
b491616a | 1403 | |
252b5132 | 1404 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
b2a8e766 | 1405 | sym_hashes = elf_sym_hashes (input_bfd); |
252b5132 RH |
1406 | |
1407 | rel = relocs; | |
1408 | relend = relocs + input_section->reloc_count; | |
1409 | for (; rel < relend; rel++) | |
1410 | { | |
1411 | int r_type; | |
1412 | reloc_howto_type *howto; | |
1413 | unsigned long r_symndx; | |
1414 | Elf_Internal_Sym *sym; | |
1415 | asection *sec; | |
1416 | struct elf32_mn10300_link_hash_entry *h; | |
1417 | bfd_vma relocation; | |
1418 | bfd_reloc_status_type r; | |
1419 | ||
1420 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1421 | r_type = ELF32_R_TYPE (rel->r_info); | |
1422 | howto = elf_mn10300_howto_table + r_type; | |
1423 | ||
1424 | /* Just skip the vtable gc relocs. */ | |
1425 | if (r_type == R_MN10300_GNU_VTINHERIT | |
1426 | || r_type == R_MN10300_GNU_VTENTRY) | |
1427 | continue; | |
1428 | ||
252b5132 RH |
1429 | h = NULL; |
1430 | sym = NULL; | |
1431 | sec = NULL; | |
1432 | if (r_symndx < symtab_hdr->sh_info) | |
1433 | { | |
1434 | sym = local_syms + r_symndx; | |
1435 | sec = local_sections[r_symndx]; | |
8517fae7 | 1436 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1437 | } |
1438 | else | |
1439 | { | |
560e09e9 NC |
1440 | bfd_boolean unresolved_reloc; |
1441 | bfd_boolean warned; | |
1442 | struct elf_link_hash_entry *hh; | |
1443 | ||
b2a8e766 AM |
1444 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1445 | r_symndx, symtab_hdr, sym_hashes, | |
1446 | hh, sec, relocation, | |
1447 | unresolved_reloc, warned); | |
560e09e9 NC |
1448 | |
1449 | h = (struct elf32_mn10300_link_hash_entry *) hh; | |
1450 | ||
1451 | if ((h->root.root.type == bfd_link_hash_defined | |
252b5132 | 1452 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 1453 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
1454 | || r_type == R_MN10300_GOTPC16 |
1455 | || (( r_type == R_MN10300_PLT32 | |
1456 | || r_type == R_MN10300_PLT16) | |
1457 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
1458 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
1459 | && h->root.plt.offset != (bfd_vma) -1) | |
1460 | || (( r_type == R_MN10300_GOT32 | |
1461 | || r_type == R_MN10300_GOT24 | |
1462 | || r_type == R_MN10300_GOT16) | |
1463 | && elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1464 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
146ccdbb | 1465 | || (r_type == R_MN10300_32 |
7e2294f9 | 1466 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
03a12831 AO |
1467 | && ((input_section->flags & SEC_ALLOC) != 0 |
1468 | /* DWARF will emit R_MN10300_32 relocations | |
1469 | in its sections against symbols defined | |
1470 | externally in shared libraries. We can't | |
1471 | do anything with them here. */ | |
1472 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1473 | && h->root.def_dynamic))))) |
560e09e9 NC |
1474 | /* In these cases, we don't need the relocation |
1475 | value. We check specially because in some | |
1476 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 1477 | relocation = 0; |
560e09e9 NC |
1478 | |
1479 | else if (unresolved_reloc) | |
1480 | (*_bfd_error_handler) | |
1481 | (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), | |
1482 | bfd_get_filename (input_bfd), h->root.root.root.string, | |
1483 | bfd_get_section_name (input_bfd, input_section)); | |
252b5132 RH |
1484 | } |
1485 | ||
1486 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
1487 | input_section, | |
1488 | contents, rel->r_offset, | |
1489 | relocation, rel->r_addend, | |
03a12831 AO |
1490 | (struct elf_link_hash_entry *)h, |
1491 | r_symndx, | |
252b5132 RH |
1492 | info, sec, h == NULL); |
1493 | ||
1494 | if (r != bfd_reloc_ok) | |
1495 | { | |
1496 | const char *name; | |
010ac81f | 1497 | const char *msg = (const char *) 0; |
252b5132 RH |
1498 | |
1499 | if (h != NULL) | |
1500 | name = h->root.root.root.string; | |
1501 | else | |
1502 | { | |
1503 | name = (bfd_elf_string_from_elf_section | |
1504 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1505 | if (name == NULL || *name == '\0') | |
1506 | name = bfd_section_name (input_bfd, sec); | |
1507 | } | |
1508 | ||
1509 | switch (r) | |
1510 | { | |
1511 | case bfd_reloc_overflow: | |
1512 | if (! ((*info->callbacks->reloc_overflow) | |
1513 | (info, name, howto->name, (bfd_vma) 0, | |
1514 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1515 | return FALSE; |
252b5132 RH |
1516 | break; |
1517 | ||
1518 | case bfd_reloc_undefined: | |
1519 | if (! ((*info->callbacks->undefined_symbol) | |
1520 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1521 | rel->r_offset, TRUE))) |
1522 | return FALSE; | |
252b5132 RH |
1523 | break; |
1524 | ||
1525 | case bfd_reloc_outofrange: | |
1526 | msg = _("internal error: out of range error"); | |
1527 | goto common_error; | |
1528 | ||
1529 | case bfd_reloc_notsupported: | |
1530 | msg = _("internal error: unsupported relocation error"); | |
1531 | goto common_error; | |
1532 | ||
1533 | case bfd_reloc_dangerous: | |
1534 | msg = _("internal error: dangerous error"); | |
1535 | goto common_error; | |
1536 | ||
1537 | default: | |
1538 | msg = _("internal error: unknown error"); | |
1539 | /* fall through */ | |
1540 | ||
1541 | common_error: | |
1542 | if (!((*info->callbacks->warning) | |
1543 | (info, msg, name, input_bfd, input_section, | |
1544 | rel->r_offset))) | |
b34976b6 | 1545 | return FALSE; |
252b5132 RH |
1546 | break; |
1547 | } | |
1548 | } | |
1549 | } | |
1550 | ||
b34976b6 | 1551 | return TRUE; |
252b5132 RH |
1552 | } |
1553 | ||
1554 | /* Finish initializing one hash table entry. */ | |
b34976b6 | 1555 | static bfd_boolean |
252b5132 RH |
1556 | elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) |
1557 | struct bfd_hash_entry *gen_entry; | |
1055df0f | 1558 | PTR in_args; |
252b5132 RH |
1559 | { |
1560 | struct elf32_mn10300_link_hash_entry *entry; | |
1055df0f | 1561 | struct bfd_link_info *link_info = (struct bfd_link_info *)in_args; |
252b5132 RH |
1562 | unsigned int byte_count = 0; |
1563 | ||
010ac81f | 1564 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 | 1565 | |
e92d460e AM |
1566 | if (entry->root.root.type == bfd_link_hash_warning) |
1567 | entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; | |
1568 | ||
252b5132 RH |
1569 | /* If we already know we want to convert "call" to "calls" for calls |
1570 | to this symbol, then return now. */ | |
1571 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 1572 | return TRUE; |
252b5132 RH |
1573 | |
1574 | /* If there are no named calls to this symbol, or there's nothing we | |
1055df0f AO |
1575 | can move from the function itself into the "call" instruction, |
1576 | then note that all "call" instructions should be converted into | |
1577 | "calls" instructions and return. If a symbol is available for | |
1578 | dynamic symbol resolution (overridable or overriding), avoid | |
1579 | custom calling conventions. */ | |
252b5132 | 1580 | if (entry->direct_calls == 0 |
1055df0f AO |
1581 | || (entry->stack_size == 0 && entry->movm_args == 0) |
1582 | || (elf_hash_table (link_info)->dynamic_sections_created | |
1583 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL | |
1584 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) | |
252b5132 RH |
1585 | { |
1586 | /* Make a note that we should convert "call" instructions to "calls" | |
1587 | instructions for calls to this symbol. */ | |
1588 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 1589 | return TRUE; |
252b5132 RH |
1590 | } |
1591 | ||
1592 | /* We may be able to move some instructions from the function itself into | |
1593 | the "call" instruction. Count how many bytes we might be able to | |
1594 | eliminate in the function itself. */ | |
1595 | ||
1596 | /* A movm instruction is two bytes. */ | |
1597 | if (entry->movm_args) | |
1598 | byte_count += 2; | |
1599 | ||
1600 | /* Count the insn to allocate stack space too. */ | |
1a101a42 AM |
1601 | if (entry->stack_size > 0) |
1602 | { | |
1603 | if (entry->stack_size <= 128) | |
1604 | byte_count += 3; | |
1605 | else | |
1606 | byte_count += 4; | |
1607 | } | |
252b5132 RH |
1608 | |
1609 | /* If using "call" will result in larger code, then turn all | |
4cc11e76 | 1610 | the associated "call" instructions into "calls" instructions. */ |
252b5132 RH |
1611 | if (byte_count < entry->direct_calls) |
1612 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1613 | ||
1614 | /* This routine never fails. */ | |
b34976b6 | 1615 | return TRUE; |
252b5132 RH |
1616 | } |
1617 | ||
1618 | /* This function handles relaxing for the mn10300. | |
1619 | ||
4cc11e76 | 1620 | There are quite a few relaxing opportunities available on the mn10300: |
252b5132 RH |
1621 | |
1622 | * calls:32 -> calls:16 2 bytes | |
1623 | * call:32 -> call:16 2 bytes | |
1624 | ||
1625 | * call:32 -> calls:32 1 byte | |
1626 | * call:16 -> calls:16 1 byte | |
1627 | * These are done anytime using "calls" would result | |
1628 | in smaller code, or when necessary to preserve the | |
1629 | meaning of the program. | |
1630 | ||
1631 | * call:32 varies | |
1632 | * call:16 | |
1633 | * In some circumstances we can move instructions | |
1634 | from a function prologue into a "call" instruction. | |
1635 | This is only done if the resulting code is no larger | |
1636 | than the original code. | |
1637 | ||
252b5132 RH |
1638 | * jmp:32 -> jmp:16 2 bytes |
1639 | * jmp:16 -> bra:8 1 byte | |
1640 | ||
1641 | * If the previous instruction is a conditional branch | |
1642 | around the jump/bra, we may be able to reverse its condition | |
1643 | and change its target to the jump's target. The jump/bra | |
1644 | can then be deleted. 2 bytes | |
1645 | ||
1646 | * mov abs32 -> mov abs16 1 or 2 bytes | |
1647 | ||
1648 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
1649 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
1650 | ||
1651 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
1652 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
1653 | ||
1654 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
1655 | and somewhat more difficult to support. */ | |
1656 | ||
b34976b6 | 1657 | static bfd_boolean |
252b5132 RH |
1658 | mn10300_elf_relax_section (abfd, sec, link_info, again) |
1659 | bfd *abfd; | |
1660 | asection *sec; | |
1661 | struct bfd_link_info *link_info; | |
b34976b6 | 1662 | bfd_boolean *again; |
252b5132 RH |
1663 | { |
1664 | Elf_Internal_Shdr *symtab_hdr; | |
1665 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
1666 | Elf_Internal_Rela *irel, *irelend; |
1667 | bfd_byte *contents = NULL; | |
6cdc0ccc | 1668 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 1669 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 1670 | asection *section = sec; |
252b5132 RH |
1671 | |
1672 | /* Assume nothing changes. */ | |
b34976b6 | 1673 | *again = FALSE; |
252b5132 RH |
1674 | |
1675 | /* We need a pointer to the mn10300 specific hash table. */ | |
1676 | hash_table = elf32_mn10300_hash_table (link_info); | |
1677 | ||
1678 | /* Initialize fields in each hash table entry the first time through. */ | |
1679 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
1680 | { | |
1681 | bfd *input_bfd; | |
1682 | ||
1683 | /* Iterate over all the input bfds. */ | |
1684 | for (input_bfd = link_info->input_bfds; | |
1685 | input_bfd != NULL; | |
1686 | input_bfd = input_bfd->link_next) | |
1687 | { | |
252b5132 RH |
1688 | /* We're going to need all the symbols for each bfd. */ |
1689 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 1690 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 1691 | { |
6cdc0ccc AM |
1692 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1693 | if (isymbuf == NULL) | |
1694 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1695 | symtab_hdr->sh_info, 0, | |
1696 | NULL, NULL, NULL); | |
1697 | if (isymbuf == NULL) | |
010ac81f KH |
1698 | goto error_return; |
1699 | } | |
252b5132 RH |
1700 | |
1701 | /* Iterate over each section in this bfd. */ | |
1702 | for (section = input_bfd->sections; | |
1703 | section != NULL; | |
1704 | section = section->next) | |
1705 | { | |
1706 | struct elf32_mn10300_link_hash_entry *hash; | |
1707 | Elf_Internal_Sym *sym; | |
86033394 | 1708 | asection *sym_sec = NULL; |
252b5132 RH |
1709 | const char *sym_name; |
1710 | char *new_name; | |
252b5132 | 1711 | |
e948afaf AO |
1712 | /* If there's nothing to do in this section, skip it. */ |
1713 | if (! (((section->flags & SEC_RELOC) != 0 | |
1714 | && section->reloc_count != 0) | |
1715 | || (section->flags & SEC_CODE) != 0)) | |
1716 | continue; | |
1717 | ||
252b5132 RH |
1718 | /* Get cached copy of section contents if it exists. */ |
1719 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
1720 | contents = elf_section_data (section)->this_hdr.contents; | |
eea6121a | 1721 | else if (section->size != 0) |
252b5132 RH |
1722 | { |
1723 | /* Go get them off disk. */ | |
eea6121a AM |
1724 | if (!bfd_malloc_and_get_section (input_bfd, section, |
1725 | &contents)) | |
252b5132 RH |
1726 | goto error_return; |
1727 | } | |
1728 | else | |
6cdc0ccc | 1729 | contents = NULL; |
252b5132 RH |
1730 | |
1731 | /* If there aren't any relocs, then there's nothing to do. */ | |
1732 | if ((section->flags & SEC_RELOC) != 0 | |
1733 | && section->reloc_count != 0) | |
1734 | { | |
1735 | ||
1736 | /* Get a copy of the native relocations. */ | |
45d6a902 | 1737 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
1738 | (input_bfd, section, (PTR) NULL, |
1739 | (Elf_Internal_Rela *) NULL, | |
1740 | link_info->keep_memory)); | |
1741 | if (internal_relocs == NULL) | |
1742 | goto error_return; | |
252b5132 RH |
1743 | |
1744 | /* Now examine each relocation. */ | |
1745 | irel = internal_relocs; | |
1746 | irelend = irel + section->reloc_count; | |
1747 | for (; irel < irelend; irel++) | |
1748 | { | |
1749 | long r_type; | |
1750 | unsigned long r_index; | |
1751 | unsigned char code; | |
1752 | ||
1753 | r_type = ELF32_R_TYPE (irel->r_info); | |
1754 | r_index = ELF32_R_SYM (irel->r_info); | |
1755 | ||
010ac81f | 1756 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
1757 | goto error_return; |
1758 | ||
1759 | /* We need the name and hash table entry of the target | |
1760 | symbol! */ | |
1761 | hash = NULL; | |
1762 | sym = NULL; | |
1763 | sym_sec = NULL; | |
1764 | ||
1765 | if (r_index < symtab_hdr->sh_info) | |
1766 | { | |
1767 | /* A local symbol. */ | |
6cdc0ccc | 1768 | Elf_Internal_Sym *isym; |
dc810e39 AM |
1769 | struct elf_link_hash_table *elftab; |
1770 | bfd_size_type amt; | |
252b5132 | 1771 | |
6cdc0ccc AM |
1772 | isym = isymbuf + r_index; |
1773 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 1774 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 1775 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 1776 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 1777 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 1778 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
1779 | else |
1780 | sym_sec | |
1781 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 1782 | isym->st_shndx); |
a7c10850 | 1783 | |
9ad5cbcf AM |
1784 | sym_name |
1785 | = bfd_elf_string_from_elf_section (input_bfd, | |
1786 | (symtab_hdr | |
1787 | ->sh_link), | |
6cdc0ccc | 1788 | isym->st_name); |
252b5132 RH |
1789 | |
1790 | /* If it isn't a function, then we don't care | |
1791 | about it. */ | |
6cdc0ccc | 1792 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
1793 | continue; |
1794 | ||
1795 | /* Tack on an ID so we can uniquely identify this | |
1796 | local symbol in the global hash table. */ | |
dc810e39 AM |
1797 | amt = strlen (sym_name) + 10; |
1798 | new_name = bfd_malloc (amt); | |
252b5132 RH |
1799 | if (new_name == 0) |
1800 | goto error_return; | |
1801 | ||
010ac81f KH |
1802 | sprintf (new_name, "%s_%08x", |
1803 | sym_name, (int) sym_sec); | |
252b5132 RH |
1804 | sym_name = new_name; |
1805 | ||
dc810e39 AM |
1806 | elftab = &hash_table->static_hash_table->root; |
1807 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
1808 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 1809 | TRUE, TRUE, FALSE)); |
252b5132 RH |
1810 | free (new_name); |
1811 | } | |
1812 | else | |
1813 | { | |
1814 | r_index -= symtab_hdr->sh_info; | |
1815 | hash = (struct elf32_mn10300_link_hash_entry *) | |
1816 | elf_sym_hashes (input_bfd)[r_index]; | |
1817 | } | |
1818 | ||
1819 | /* If this is not a "call" instruction, then we | |
1820 | should convert "call" instructions to "calls" | |
1821 | instructions. */ | |
1822 | code = bfd_get_8 (input_bfd, | |
1823 | contents + irel->r_offset - 1); | |
1824 | if (code != 0xdd && code != 0xcd) | |
1825 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1826 | ||
6cdc0ccc AM |
1827 | /* If this is a jump/call, then bump the |
1828 | direct_calls counter. Else force "call" to | |
1829 | "calls" conversions. */ | |
252b5132 | 1830 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
1831 | || r_type == R_MN10300_PLT32 |
1832 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
1833 | || r_type == R_MN10300_PCREL16) |
1834 | hash->direct_calls++; | |
1835 | else | |
1836 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | /* Now look at the actual contents to get the stack size, | |
1841 | and a list of what registers were saved in the prologue | |
1842 | (ie movm_args). */ | |
1843 | if ((section->flags & SEC_CODE) != 0) | |
1844 | { | |
6cdc0ccc | 1845 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 1846 | unsigned int sec_shndx; |
6cdc0ccc AM |
1847 | struct elf_link_hash_entry **hashes; |
1848 | struct elf_link_hash_entry **end_hashes; | |
1849 | unsigned int symcount; | |
252b5132 | 1850 | |
9ad5cbcf AM |
1851 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
1852 | section); | |
252b5132 | 1853 | |
1055df0f AO |
1854 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
1855 | - symtab_hdr->sh_info); | |
1856 | hashes = elf_sym_hashes (input_bfd); | |
1857 | end_hashes = hashes + symcount; | |
1858 | ||
252b5132 RH |
1859 | /* Look at each function defined in this section and |
1860 | update info for that function. */ | |
6cdc0ccc AM |
1861 | isymend = isymbuf + symtab_hdr->sh_info; |
1862 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 1863 | { |
6cdc0ccc AM |
1864 | if (isym->st_shndx == sec_shndx |
1865 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 1866 | { |
dc810e39 AM |
1867 | struct elf_link_hash_table *elftab; |
1868 | bfd_size_type amt; | |
1055df0f AO |
1869 | struct elf_link_hash_entry **lhashes = hashes; |
1870 | ||
1871 | /* Skip a local symbol if it aliases a | |
1872 | global one. */ | |
1873 | for (; lhashes < end_hashes; lhashes++) | |
1874 | { | |
1875 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; | |
1876 | if ((hash->root.root.type == bfd_link_hash_defined | |
1877 | || hash->root.root.type == bfd_link_hash_defweak) | |
1878 | && hash->root.root.u.def.section == section | |
1879 | && hash->root.type == STT_FUNC | |
1880 | && hash->root.root.u.def.value == isym->st_value) | |
1881 | break; | |
1882 | } | |
1883 | if (lhashes != end_hashes) | |
1884 | continue; | |
dc810e39 | 1885 | |
6cdc0ccc | 1886 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 1887 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 1888 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 1889 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 1890 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 1891 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
1892 | else |
1893 | sym_sec | |
1894 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 1895 | isym->st_shndx); |
252b5132 | 1896 | |
dc810e39 AM |
1897 | sym_name = (bfd_elf_string_from_elf_section |
1898 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 1899 | isym->st_name)); |
252b5132 RH |
1900 | |
1901 | /* Tack on an ID so we can uniquely identify this | |
1902 | local symbol in the global hash table. */ | |
dc810e39 AM |
1903 | amt = strlen (sym_name) + 10; |
1904 | new_name = bfd_malloc (amt); | |
252b5132 RH |
1905 | if (new_name == 0) |
1906 | goto error_return; | |
1907 | ||
010ac81f KH |
1908 | sprintf (new_name, "%s_%08x", |
1909 | sym_name, (int) sym_sec); | |
252b5132 RH |
1910 | sym_name = new_name; |
1911 | ||
dc810e39 AM |
1912 | elftab = &hash_table->static_hash_table->root; |
1913 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
1914 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 1915 | TRUE, TRUE, FALSE)); |
252b5132 RH |
1916 | free (new_name); |
1917 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 1918 | isym->st_value, contents); |
252b5132 RH |
1919 | } |
1920 | } | |
1921 | ||
6cdc0ccc | 1922 | for (; hashes < end_hashes; hashes++) |
252b5132 | 1923 | { |
6cdc0ccc | 1924 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
1925 | if ((hash->root.root.type == bfd_link_hash_defined |
1926 | || hash->root.root.type == bfd_link_hash_defweak) | |
1927 | && hash->root.root.u.def.section == section | |
9bb351fd | 1928 | && hash->root.type == STT_FUNC) |
252b5132 RH |
1929 | compute_function_info (input_bfd, hash, |
1930 | (hash)->root.root.u.def.value, | |
1931 | contents); | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
1936 | if (internal_relocs != NULL |
1937 | && elf_section_data (section)->relocs != internal_relocs) | |
1938 | free (internal_relocs); | |
1939 | internal_relocs = NULL; | |
252b5132 RH |
1940 | |
1941 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
1942 | if (contents != NULL |
1943 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
1944 | { |
1945 | if (! link_info->keep_memory) | |
6cdc0ccc | 1946 | free (contents); |
252b5132 RH |
1947 | else |
1948 | { | |
1949 | /* Cache the section contents for elf_link_input_bfd. */ | |
1950 | elf_section_data (section)->this_hdr.contents = contents; | |
1951 | } | |
252b5132 | 1952 | } |
6cdc0ccc | 1953 | contents = NULL; |
9ad5cbcf AM |
1954 | } |
1955 | ||
252b5132 | 1956 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
1957 | if (isymbuf != NULL |
1958 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
1959 | { |
1960 | if (! link_info->keep_memory) | |
6cdc0ccc | 1961 | free (isymbuf); |
252b5132 RH |
1962 | else |
1963 | { | |
1964 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 1965 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 1966 | } |
252b5132 | 1967 | } |
6cdc0ccc | 1968 | isymbuf = NULL; |
252b5132 RH |
1969 | } |
1970 | ||
1971 | /* Now iterate on each symbol in the hash table and perform | |
1972 | the final initialization steps on each. */ | |
1973 | elf32_mn10300_link_hash_traverse (hash_table, | |
1974 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 1975 | link_info); |
252b5132 RH |
1976 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
1977 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 1978 | link_info); |
252b5132 RH |
1979 | |
1980 | /* All entries in the hash table are fully initialized. */ | |
1981 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
1982 | ||
1983 | /* Now that everything has been initialized, go through each | |
1984 | code section and delete any prologue insns which will be | |
1985 | redundant because their operations will be performed by | |
1986 | a "call" instruction. */ | |
1987 | for (input_bfd = link_info->input_bfds; | |
1988 | input_bfd != NULL; | |
1989 | input_bfd = input_bfd->link_next) | |
1990 | { | |
9ad5cbcf | 1991 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 1992 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 1993 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 1994 | { |
6cdc0ccc AM |
1995 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1996 | if (isymbuf == NULL) | |
1997 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1998 | symtab_hdr->sh_info, 0, | |
1999 | NULL, NULL, NULL); | |
2000 | if (isymbuf == NULL) | |
9ad5cbcf | 2001 | goto error_return; |
010ac81f | 2002 | } |
252b5132 RH |
2003 | |
2004 | /* Walk over each section in this bfd. */ | |
2005 | for (section = input_bfd->sections; | |
2006 | section != NULL; | |
2007 | section = section->next) | |
2008 | { | |
9ad5cbcf | 2009 | unsigned int sec_shndx; |
6cdc0ccc AM |
2010 | Elf_Internal_Sym *isym, *isymend; |
2011 | struct elf_link_hash_entry **hashes; | |
2012 | struct elf_link_hash_entry **end_hashes; | |
2013 | unsigned int symcount; | |
252b5132 RH |
2014 | |
2015 | /* Skip non-code sections and empty sections. */ | |
eea6121a | 2016 | if ((section->flags & SEC_CODE) == 0 || section->size == 0) |
252b5132 RH |
2017 | continue; |
2018 | ||
2019 | if (section->reloc_count != 0) | |
2020 | { | |
010ac81f | 2021 | /* Get a copy of the native relocations. */ |
45d6a902 | 2022 | internal_relocs = (_bfd_elf_link_read_relocs |
010ac81f KH |
2023 | (input_bfd, section, (PTR) NULL, |
2024 | (Elf_Internal_Rela *) NULL, | |
2025 | link_info->keep_memory)); | |
2026 | if (internal_relocs == NULL) | |
2027 | goto error_return; | |
252b5132 RH |
2028 | } |
2029 | ||
2030 | /* Get cached copy of section contents if it exists. */ | |
2031 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2032 | contents = elf_section_data (section)->this_hdr.contents; | |
2033 | else | |
2034 | { | |
2035 | /* Go get them off disk. */ | |
eea6121a AM |
2036 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2037 | &contents)) | |
252b5132 RH |
2038 | goto error_return; |
2039 | } | |
2040 | ||
9ad5cbcf AM |
2041 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2042 | section); | |
252b5132 RH |
2043 | |
2044 | /* Now look for any function in this section which needs | |
2045 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
2046 | isymend = isymbuf + symtab_hdr->sh_info; |
2047 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2048 | { |
252b5132 | 2049 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 2050 | asection *sym_sec = NULL; |
252b5132 | 2051 | const char *sym_name; |
252b5132 | 2052 | char *new_name; |
dc810e39 AM |
2053 | struct elf_link_hash_table *elftab; |
2054 | bfd_size_type amt; | |
252b5132 | 2055 | |
6cdc0ccc | 2056 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
2057 | continue; |
2058 | ||
6cdc0ccc | 2059 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2060 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2061 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2062 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2063 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2064 | sym_sec = bfd_com_section_ptr; |
86033394 | 2065 | else |
9ad5cbcf | 2066 | sym_sec |
6cdc0ccc | 2067 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 2068 | |
9ad5cbcf AM |
2069 | sym_name |
2070 | = bfd_elf_string_from_elf_section (input_bfd, | |
2071 | symtab_hdr->sh_link, | |
6cdc0ccc | 2072 | isym->st_name); |
252b5132 RH |
2073 | |
2074 | /* Tack on an ID so we can uniquely identify this | |
2075 | local symbol in the global hash table. */ | |
dc810e39 AM |
2076 | amt = strlen (sym_name) + 10; |
2077 | new_name = bfd_malloc (amt); | |
252b5132 RH |
2078 | if (new_name == 0) |
2079 | goto error_return; | |
010ac81f | 2080 | sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); |
252b5132 RH |
2081 | sym_name = new_name; |
2082 | ||
dc810e39 AM |
2083 | elftab = &hash_table->static_hash_table->root; |
2084 | sym_hash = ((struct elf32_mn10300_link_hash_entry *) | |
2085 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2086 | FALSE, FALSE, FALSE)); |
252b5132 RH |
2087 | |
2088 | free (new_name); | |
2089 | if (sym_hash == NULL) | |
2090 | continue; | |
2091 | ||
9ad5cbcf AM |
2092 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
2093 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2094 | { |
2095 | int bytes = 0; | |
2096 | ||
2097 | /* Note that we've changed things. */ | |
2098 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2099 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2100 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2101 | |
2102 | /* Count how many bytes we're going to delete. */ | |
2103 | if (sym_hash->movm_args) | |
2104 | bytes += 2; | |
2105 | ||
1a101a42 AM |
2106 | if (sym_hash->stack_size > 0) |
2107 | { | |
2108 | if (sym_hash->stack_size <= 128) | |
2109 | bytes += 3; | |
2110 | else | |
2111 | bytes += 4; | |
2112 | } | |
252b5132 RH |
2113 | |
2114 | /* Note that we've deleted prologue bytes for this | |
2115 | function. */ | |
2116 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2117 | ||
2118 | /* Actually delete the bytes. */ | |
2119 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
2120 | section, | |
6cdc0ccc | 2121 | isym->st_value, |
252b5132 RH |
2122 | bytes)) |
2123 | goto error_return; | |
2124 | ||
2125 | /* Something changed. Not strictly necessary, but | |
2126 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2127 | *again = TRUE; |
252b5132 RH |
2128 | } |
2129 | } | |
2130 | ||
2131 | /* Look for any global functions in this section which | |
2132 | need insns deleted from their prologues. */ | |
6cdc0ccc | 2133 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 2134 | - symtab_hdr->sh_info); |
709e685d | 2135 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2136 | end_hashes = hashes + symcount; |
2137 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2138 | { |
252b5132 RH |
2139 | struct elf32_mn10300_link_hash_entry *sym_hash; |
2140 | ||
6cdc0ccc | 2141 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2142 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
2143 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
2144 | && sym_hash->root.root.u.def.section == section | |
2145 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
2146 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2147 | { |
2148 | int bytes = 0; | |
9ad5cbcf | 2149 | bfd_vma symval; |
252b5132 RH |
2150 | |
2151 | /* Note that we've changed things. */ | |
2152 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2153 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2154 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2155 | |
2156 | /* Count how many bytes we're going to delete. */ | |
2157 | if (sym_hash->movm_args) | |
2158 | bytes += 2; | |
2159 | ||
1a101a42 AM |
2160 | if (sym_hash->stack_size > 0) |
2161 | { | |
2162 | if (sym_hash->stack_size <= 128) | |
2163 | bytes += 3; | |
2164 | else | |
2165 | bytes += 4; | |
2166 | } | |
252b5132 RH |
2167 | |
2168 | /* Note that we've deleted prologue bytes for this | |
2169 | function. */ | |
2170 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2171 | ||
2172 | /* Actually delete the bytes. */ | |
9ad5cbcf | 2173 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
2174 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
2175 | section, | |
9ad5cbcf | 2176 | symval, |
252b5132 RH |
2177 | bytes)) |
2178 | goto error_return; | |
2179 | ||
2180 | /* Something changed. Not strictly necessary, but | |
2181 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2182 | *again = TRUE; |
252b5132 RH |
2183 | } |
2184 | } | |
2185 | ||
2186 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2187 | if (internal_relocs != NULL |
2188 | && elf_section_data (section)->relocs != internal_relocs) | |
2189 | free (internal_relocs); | |
2190 | internal_relocs = NULL; | |
252b5132 RH |
2191 | |
2192 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2193 | if (contents != NULL |
2194 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2195 | { |
2196 | if (! link_info->keep_memory) | |
6cdc0ccc | 2197 | free (contents); |
252b5132 RH |
2198 | else |
2199 | { | |
2200 | /* Cache the section contents for elf_link_input_bfd. */ | |
2201 | elf_section_data (section)->this_hdr.contents = contents; | |
2202 | } | |
252b5132 | 2203 | } |
6cdc0ccc | 2204 | contents = NULL; |
9ad5cbcf AM |
2205 | } |
2206 | ||
252b5132 | 2207 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2208 | if (isymbuf != NULL |
2209 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2210 | { |
2211 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
2212 | free (isymbuf); |
2213 | else | |
252b5132 | 2214 | { |
6cdc0ccc AM |
2215 | /* Cache the symbols for elf_link_input_bfd. */ |
2216 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 2217 | } |
252b5132 | 2218 | } |
6cdc0ccc | 2219 | isymbuf = NULL; |
252b5132 RH |
2220 | } |
2221 | } | |
2222 | ||
252b5132 RH |
2223 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
2224 | contents = NULL; | |
252b5132 | 2225 | internal_relocs = NULL; |
6cdc0ccc AM |
2226 | isymbuf = NULL; |
2227 | /* For error_return. */ | |
2228 | section = sec; | |
252b5132 | 2229 | |
1049f94e | 2230 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
2231 | this section does not have relocs, or if this is not a |
2232 | code section. */ | |
1049f94e | 2233 | if (link_info->relocatable |
252b5132 RH |
2234 | || (sec->flags & SEC_RELOC) == 0 |
2235 | || sec->reloc_count == 0 | |
2236 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 2237 | return TRUE; |
252b5132 | 2238 | |
252b5132 RH |
2239 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2240 | ||
2241 | /* Get a copy of the native relocations. */ | |
45d6a902 | 2242 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
2243 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2244 | link_info->keep_memory)); | |
2245 | if (internal_relocs == NULL) | |
2246 | goto error_return; | |
252b5132 RH |
2247 | |
2248 | /* Walk through them looking for relaxing opportunities. */ | |
2249 | irelend = internal_relocs + sec->reloc_count; | |
2250 | for (irel = internal_relocs; irel < irelend; irel++) | |
2251 | { | |
2252 | bfd_vma symval; | |
2253 | struct elf32_mn10300_link_hash_entry *h = NULL; | |
2254 | ||
2255 | /* If this isn't something that can be relaxed, then ignore | |
2256 | this reloc. */ | |
2257 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
2258 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
2259 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
2260 | continue; | |
2261 | ||
2262 | /* Get the section contents if we haven't done so already. */ | |
2263 | if (contents == NULL) | |
2264 | { | |
2265 | /* Get cached copy if it exists. */ | |
2266 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2267 | contents = elf_section_data (sec)->this_hdr.contents; | |
2268 | else | |
2269 | { | |
2270 | /* Go get them off disk. */ | |
eea6121a | 2271 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2272 | goto error_return; |
2273 | } | |
2274 | } | |
2275 | ||
b34976b6 | 2276 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 2277 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 2278 | { |
6cdc0ccc AM |
2279 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2280 | if (isymbuf == NULL) | |
2281 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2282 | symtab_hdr->sh_info, 0, | |
2283 | NULL, NULL, NULL); | |
2284 | if (isymbuf == NULL) | |
2285 | goto error_return; | |
252b5132 RH |
2286 | } |
2287 | ||
2288 | /* Get the value of the symbol referred to by the reloc. */ | |
2289 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2290 | { | |
6cdc0ccc | 2291 | Elf_Internal_Sym *isym; |
86033394 | 2292 | asection *sym_sec = NULL; |
252b5132 RH |
2293 | const char *sym_name; |
2294 | char *new_name; | |
dd90f1b2 | 2295 | bfd_vma saved_addend; |
252b5132 RH |
2296 | |
2297 | /* A local symbol. */ | |
6cdc0ccc AM |
2298 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2299 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2300 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2301 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2302 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2303 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2304 | sym_sec = bfd_com_section_ptr; |
86033394 | 2305 | else |
6cdc0ccc | 2306 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 2307 | |
252b5132 RH |
2308 | sym_name = bfd_elf_string_from_elf_section (abfd, |
2309 | symtab_hdr->sh_link, | |
6cdc0ccc | 2310 | isym->st_name); |
252b5132 | 2311 | |
dd90f1b2 DD |
2312 | if ((sym_sec->flags & SEC_MERGE) |
2313 | && ELF_ST_TYPE (isym->st_info) == STT_SECTION | |
2314 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
2315 | { | |
2316 | saved_addend = irel->r_addend; | |
2317 | symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel); | |
2318 | symval += irel->r_addend; | |
2319 | irel->r_addend = saved_addend; | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | symval = (isym->st_value | |
2324 | + sym_sec->output_section->vma | |
2325 | + sym_sec->output_offset); | |
2326 | } | |
252b5132 RH |
2327 | /* Tack on an ID so we can uniquely identify this |
2328 | local symbol in the global hash table. */ | |
dc810e39 | 2329 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
252b5132 RH |
2330 | if (new_name == 0) |
2331 | goto error_return; | |
010ac81f | 2332 | sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); |
252b5132 RH |
2333 | sym_name = new_name; |
2334 | ||
2335 | h = (struct elf32_mn10300_link_hash_entry *) | |
2336 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 2337 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
2338 | free (new_name); |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | unsigned long indx; | |
2343 | ||
2344 | /* An external symbol. */ | |
2345 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2346 | h = (struct elf32_mn10300_link_hash_entry *) | |
2347 | (elf_sym_hashes (abfd)[indx]); | |
2348 | BFD_ASSERT (h != NULL); | |
2349 | if (h->root.root.type != bfd_link_hash_defined | |
2350 | && h->root.root.type != bfd_link_hash_defweak) | |
2351 | { | |
2352 | /* This appears to be a reference to an undefined | |
2353 | symbol. Just ignore it--it will be caught by the | |
2354 | regular reloc processing. */ | |
2355 | continue; | |
2356 | } | |
2357 | ||
2358 | symval = (h->root.root.u.def.value | |
2359 | + h->root.root.u.def.section->output_section->vma | |
2360 | + h->root.root.u.def.section->output_offset); | |
2361 | } | |
2362 | ||
2363 | /* For simplicity of coding, we are going to modify the section | |
2364 | contents, the section relocs, and the BFD symbol table. We | |
2365 | must tell the rest of the code not to free up this | |
2366 | information. It would be possible to instead create a table | |
2367 | of changes which have to be made, as is done in coff-mips.c; | |
2368 | that would be more work, but would require less memory when | |
2369 | the linker is run. */ | |
2370 | ||
2371 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
2372 | branch/call, also deal with "call" -> "calls" conversions and | |
2373 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
2374 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
2375 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
2376 | { |
2377 | bfd_vma value = symval; | |
2378 | ||
03a12831 AO |
2379 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
2380 | && h != NULL | |
2381 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2382 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2383 | && h->root.plt.offset != (bfd_vma) -1) | |
2384 | { | |
2385 | asection * splt; | |
2386 | ||
2387 | splt = bfd_get_section_by_name (elf_hash_table (link_info) | |
2388 | ->dynobj, ".plt"); | |
2389 | ||
2390 | value = ((splt->output_section->vma | |
2391 | + splt->output_offset | |
2392 | + h->root.plt.offset) | |
2393 | - (sec->output_section->vma | |
2394 | + sec->output_offset | |
2395 | + irel->r_offset)); | |
2396 | } | |
2397 | ||
252b5132 RH |
2398 | /* If we've got a "call" instruction that needs to be turned |
2399 | into a "calls" instruction, do so now. It saves a byte. */ | |
2400 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2401 | { | |
2402 | unsigned char code; | |
2403 | ||
2404 | /* Get the opcode. */ | |
2405 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2406 | ||
2407 | /* Make sure we're working with a "call" instruction! */ | |
2408 | if (code == 0xdd) | |
2409 | { | |
2410 | /* Note that we've changed the relocs, section contents, | |
2411 | etc. */ | |
2412 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2413 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2414 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2415 | |
2416 | /* Fix the opcode. */ | |
2417 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
2418 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2419 | ||
2420 | /* Fix irel->r_offset and irel->r_addend. */ | |
2421 | irel->r_offset += 1; | |
2422 | irel->r_addend += 1; | |
2423 | ||
2424 | /* Delete one byte of data. */ | |
2425 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2426 | irel->r_offset + 3, 1)) | |
2427 | goto error_return; | |
2428 | ||
2429 | /* That will change things, so, we should relax again. | |
2430 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2431 | *again = TRUE; |
252b5132 RH |
2432 | } |
2433 | } | |
2434 | else if (h) | |
2435 | { | |
2436 | /* We've got a "call" instruction which needs some data | |
2437 | from target function filled in. */ | |
2438 | unsigned char code; | |
2439 | ||
2440 | /* Get the opcode. */ | |
2441 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2442 | ||
2443 | /* Insert data from the target function into the "call" | |
2444 | instruction if needed. */ | |
2445 | if (code == 0xdd) | |
2446 | { | |
2447 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
2448 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2449 | contents + irel->r_offset + 5); | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | /* Deal with pc-relative gunk. */ | |
2454 | value -= (sec->output_section->vma + sec->output_offset); | |
2455 | value -= irel->r_offset; | |
2456 | value += irel->r_addend; | |
2457 | ||
2458 | /* See if the value will fit in 16 bits, note the high value is | |
2459 | 0x7fff + 2 as the target will be two bytes closer if we are | |
2460 | able to relax. */ | |
010ac81f | 2461 | if ((long) value < 0x8001 && (long) value > -0x8000) |
252b5132 RH |
2462 | { |
2463 | unsigned char code; | |
2464 | ||
2465 | /* Get the opcode. */ | |
2466 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2467 | ||
2468 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
2469 | continue; | |
2470 | ||
2471 | /* Note that we've changed the relocs, section contents, etc. */ | |
2472 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2473 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2474 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2475 | |
2476 | /* Fix the opcode. */ | |
2477 | if (code == 0xdc) | |
2478 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
2479 | else if (code == 0xdd) | |
2480 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
2481 | else if (code == 0xff) | |
2482 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2483 | ||
2484 | /* Fix the relocation's type. */ | |
2485 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2486 | (ELF32_R_TYPE (irel->r_info) |
2487 | == (int) R_MN10300_PLT32) | |
2488 | ? R_MN10300_PLT16 : | |
252b5132 RH |
2489 | R_MN10300_PCREL16); |
2490 | ||
2491 | /* Delete two bytes of data. */ | |
2492 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2493 | irel->r_offset + 1, 2)) | |
2494 | goto error_return; | |
2495 | ||
2496 | /* That will change things, so, we should relax again. | |
2497 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2498 | *again = TRUE; |
252b5132 RH |
2499 | } |
2500 | } | |
2501 | ||
2502 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
2503 | branch. */ | |
2504 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
2505 | { | |
2506 | bfd_vma value = symval; | |
2507 | ||
2508 | /* If we've got a "call" instruction that needs to be turned | |
2509 | into a "calls" instruction, do so now. It saves a byte. */ | |
2510 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2511 | { | |
2512 | unsigned char code; | |
2513 | ||
2514 | /* Get the opcode. */ | |
2515 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2516 | ||
2517 | /* Make sure we're working with a "call" instruction! */ | |
2518 | if (code == 0xcd) | |
2519 | { | |
2520 | /* Note that we've changed the relocs, section contents, | |
2521 | etc. */ | |
2522 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2523 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2524 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2525 | |
2526 | /* Fix the opcode. */ | |
2527 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
2528 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2529 | ||
2530 | /* Fix irel->r_offset and irel->r_addend. */ | |
2531 | irel->r_offset += 1; | |
2532 | irel->r_addend += 1; | |
2533 | ||
2534 | /* Delete one byte of data. */ | |
2535 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2536 | irel->r_offset + 1, 1)) | |
2537 | goto error_return; | |
2538 | ||
2539 | /* That will change things, so, we should relax again. | |
2540 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2541 | *again = TRUE; |
252b5132 RH |
2542 | } |
2543 | } | |
2544 | else if (h) | |
2545 | { | |
2546 | unsigned char code; | |
2547 | ||
2548 | /* Get the opcode. */ | |
2549 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2550 | ||
2551 | /* Insert data from the target function into the "call" | |
2552 | instruction if needed. */ | |
2553 | if (code == 0xcd) | |
2554 | { | |
2555 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
2556 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2557 | contents + irel->r_offset + 3); | |
2558 | } | |
2559 | } | |
2560 | ||
2561 | /* Deal with pc-relative gunk. */ | |
2562 | value -= (sec->output_section->vma + sec->output_offset); | |
2563 | value -= irel->r_offset; | |
2564 | value += irel->r_addend; | |
2565 | ||
2566 | /* See if the value will fit in 8 bits, note the high value is | |
2567 | 0x7f + 1 as the target will be one bytes closer if we are | |
2568 | able to relax. */ | |
010ac81f | 2569 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
2570 | { |
2571 | unsigned char code; | |
2572 | ||
2573 | /* Get the opcode. */ | |
2574 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2575 | ||
2576 | if (code != 0xcc) | |
2577 | continue; | |
2578 | ||
2579 | /* Note that we've changed the relocs, section contents, etc. */ | |
2580 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2581 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2582 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2583 | |
2584 | /* Fix the opcode. */ | |
2585 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
2586 | ||
2587 | /* Fix the relocation's type. */ | |
2588 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2589 | R_MN10300_PCREL8); | |
2590 | ||
2591 | /* Delete one byte of data. */ | |
2592 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2593 | irel->r_offset + 1, 1)) | |
2594 | goto error_return; | |
2595 | ||
2596 | /* That will change things, so, we should relax again. | |
2597 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2598 | *again = TRUE; |
252b5132 RH |
2599 | } |
2600 | } | |
2601 | ||
2602 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
2603 | which immediately follows a conditional 8 bit pc-relative | |
2604 | branch around the unconditional branch. | |
2605 | ||
2606 | original: new: | |
2607 | bCC lab1 bCC' lab2 | |
2608 | bra lab2 | |
2609 | lab1: lab1: | |
2610 | ||
252b5132 RH |
2611 | This happens when the bCC can't reach lab2 at assembly time, |
2612 | but due to other relaxations it can reach at link time. */ | |
2613 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
2614 | { | |
2615 | Elf_Internal_Rela *nrel; | |
2616 | bfd_vma value = symval; | |
2617 | unsigned char code; | |
2618 | ||
2619 | /* Deal with pc-relative gunk. */ | |
2620 | value -= (sec->output_section->vma + sec->output_offset); | |
2621 | value -= irel->r_offset; | |
2622 | value += irel->r_addend; | |
2623 | ||
2624 | /* Do nothing if this reloc is the last byte in the section. */ | |
eea6121a | 2625 | if (irel->r_offset == sec->size) |
252b5132 RH |
2626 | continue; |
2627 | ||
2628 | /* See if the next instruction is an unconditional pc-relative | |
2629 | branch, more often than not this test will fail, so we | |
2630 | test it first to speed things up. */ | |
2631 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
2632 | if (code != 0xca) | |
2633 | continue; | |
2634 | ||
2635 | /* Also make sure the next relocation applies to the next | |
2636 | instruction and that it's a pc-relative 8 bit branch. */ | |
2637 | nrel = irel + 1; | |
2638 | if (nrel == irelend | |
2639 | || irel->r_offset + 2 != nrel->r_offset | |
2640 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
2641 | continue; | |
2642 | ||
2643 | /* Make sure our destination immediately follows the | |
2644 | unconditional branch. */ | |
2645 | if (symval != (sec->output_section->vma + sec->output_offset | |
2646 | + irel->r_offset + 3)) | |
2647 | continue; | |
2648 | ||
2649 | /* Now make sure we are a conditional branch. This may not | |
2650 | be necessary, but why take the chance. | |
2651 | ||
2652 | Note these checks assume that R_MN10300_PCREL8 relocs | |
2653 | only occur on bCC and bCCx insns. If they occured | |
2654 | elsewhere, we'd need to know the start of this insn | |
2655 | for this check to be accurate. */ | |
2656 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2657 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
2658 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
2659 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
2660 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
2661 | && code != 0xea && code != 0xeb) | |
2662 | continue; | |
2663 | ||
2664 | /* We also have to be sure there is no symbol/label | |
2665 | at the unconditional branch. */ | |
6cdc0ccc AM |
2666 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
2667 | irel->r_offset + 1)) | |
252b5132 RH |
2668 | continue; |
2669 | ||
2670 | /* Note that we've changed the relocs, section contents, etc. */ | |
2671 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2672 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2673 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2674 | |
2675 | /* Reverse the condition of the first branch. */ | |
2676 | switch (code) | |
2677 | { | |
010ac81f KH |
2678 | case 0xc8: |
2679 | code = 0xc9; | |
2680 | break; | |
2681 | case 0xc9: | |
2682 | code = 0xc8; | |
2683 | break; | |
2684 | case 0xc0: | |
2685 | code = 0xc2; | |
2686 | break; | |
2687 | case 0xc2: | |
2688 | code = 0xc0; | |
2689 | break; | |
2690 | case 0xc3: | |
2691 | code = 0xc1; | |
2692 | break; | |
2693 | case 0xc1: | |
2694 | code = 0xc3; | |
2695 | break; | |
2696 | case 0xc4: | |
2697 | code = 0xc6; | |
2698 | break; | |
2699 | case 0xc6: | |
2700 | code = 0xc4; | |
2701 | break; | |
2702 | case 0xc7: | |
2703 | code = 0xc5; | |
2704 | break; | |
2705 | case 0xc5: | |
2706 | code = 0xc7; | |
2707 | break; | |
2708 | case 0xe8: | |
2709 | code = 0xe9; | |
2710 | break; | |
2711 | case 0x9d: | |
2712 | code = 0xe8; | |
2713 | break; | |
2714 | case 0xea: | |
2715 | code = 0xeb; | |
2716 | break; | |
2717 | case 0xeb: | |
2718 | code = 0xea; | |
2719 | break; | |
252b5132 RH |
2720 | } |
2721 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
2722 | ||
2723 | /* Set the reloc type and symbol for the first branch | |
2724 | from the second branch. */ | |
2725 | irel->r_info = nrel->r_info; | |
2726 | ||
2727 | /* Make the reloc for the second branch a null reloc. */ | |
2728 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
2729 | R_MN10300_NONE); | |
2730 | ||
2731 | /* Delete two bytes of data. */ | |
2732 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2733 | irel->r_offset + 1, 2)) | |
2734 | goto error_return; | |
2735 | ||
2736 | /* That will change things, so, we should relax again. | |
2737 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2738 | *again = TRUE; |
252b5132 RH |
2739 | } |
2740 | ||
31f8dc8f JL |
2741 | /* Try to turn a 24 immediate, displacement or absolute address |
2742 | into a 8 immediate, displacement or absolute address. */ | |
2743 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
2744 | { | |
2745 | bfd_vma value = symval; | |
2746 | value += irel->r_addend; | |
2747 | ||
2748 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 2749 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
2750 | { |
2751 | unsigned char code; | |
2752 | ||
2753 | /* AM33 insns which have 24 operands are 6 bytes long and | |
2754 | will have 0xfd as the first byte. */ | |
2755 | ||
2756 | /* Get the first opcode. */ | |
2757 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
2758 | ||
2759 | if (code == 0xfd) | |
2760 | { | |
010ac81f KH |
2761 | /* Get the second opcode. */ |
2762 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
2763 | |
2764 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
2765 | equivalent instructions exists. */ | |
2766 | if (code != 0x6b && code != 0x7b | |
2767 | && code != 0x8b && code != 0x9b | |
2768 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
2769 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
2770 | || (code & 0x0f) == 0x0e)) | |
2771 | { | |
2772 | /* Not safe if the high bit is on as relaxing may | |
2773 | move the value out of high mem and thus not fit | |
2774 | in a signed 8bit value. This is currently over | |
2775 | conservative. */ | |
2776 | if ((value & 0x80) == 0) | |
2777 | { | |
2778 | /* Note that we've changed the relocation contents, | |
2779 | etc. */ | |
2780 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 2781 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2782 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
2783 | |
2784 | /* Fix the opcode. */ | |
2785 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
2786 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
2787 | ||
2788 | /* Fix the relocation's type. */ | |
010ac81f KH |
2789 | irel->r_info = |
2790 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2791 | R_MN10300_8); | |
31f8dc8f JL |
2792 | |
2793 | /* Delete two bytes of data. */ | |
2794 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2795 | irel->r_offset + 1, 2)) | |
2796 | goto error_return; | |
2797 | ||
2798 | /* That will change things, so, we should relax | |
2799 | again. Note that this is not required, and it | |
010ac81f | 2800 | may be slow. */ |
b34976b6 | 2801 | *again = TRUE; |
31f8dc8f JL |
2802 | break; |
2803 | } | |
2804 | } | |
31f8dc8f JL |
2805 | } |
2806 | } | |
2807 | } | |
252b5132 RH |
2808 | |
2809 | /* Try to turn a 32bit immediate, displacement or absolute address | |
2810 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
2811 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
2812 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
2813 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32 | |
2814 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
252b5132 RH |
2815 | { |
2816 | bfd_vma value = symval; | |
03a12831 AO |
2817 | |
2818 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
2819 | { | |
2820 | asection * sgot; | |
2821 | ||
2822 | sgot = bfd_get_section_by_name (elf_hash_table (link_info) | |
2823 | ->dynobj, ".got"); | |
2824 | ||
2825 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) | |
2826 | { | |
2827 | value = sgot->output_offset; | |
2828 | ||
2829 | if (h) | |
2830 | value += h->root.got.offset; | |
2831 | else | |
2832 | value += (elf_local_got_offsets | |
2833 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
2834 | } | |
2835 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
2836 | value -= sgot->output_section->vma; | |
2837 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
2838 | value = (sgot->output_section->vma | |
2839 | - (sec->output_section->vma | |
2840 | + sec->output_offset | |
2841 | + irel->r_offset)); | |
2842 | else | |
2843 | abort (); | |
2844 | } | |
2845 | ||
252b5132 RH |
2846 | value += irel->r_addend; |
2847 | ||
31f8dc8f JL |
2848 | /* See if the value will fit in 24 bits. |
2849 | We allow any 16bit match here. We prune those we can't | |
2850 | handle below. */ | |
010ac81f | 2851 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
2852 | { |
2853 | unsigned char code; | |
2854 | ||
2855 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
2856 | will have 0xfe as the first byte. */ | |
2857 | ||
2858 | /* Get the first opcode. */ | |
2859 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
2860 | ||
2861 | if (code == 0xfe) | |
2862 | { | |
2863 | /* Get the second opcode. */ | |
2864 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
2865 | ||
2866 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
2867 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
2868 | equivalent instructions exists. */ | |
010ac81f | 2869 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 2870 | && code != 0x8b && code != 0x9b |
03a12831 AO |
2871 | && (ELF32_R_TYPE (irel->r_info) |
2872 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
2873 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
2874 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
2875 | || (code & 0x0f) == 0x0e)) | |
2876 | { | |
2877 | /* Not safe if the high bit is on as relaxing may | |
2878 | move the value out of high mem and thus not fit | |
2879 | in a signed 16bit value. This is currently over | |
2880 | conservative. */ | |
2881 | if ((value & 0x8000) == 0) | |
2882 | { | |
2883 | /* Note that we've changed the relocation contents, | |
2884 | etc. */ | |
2885 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 2886 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2887 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
2888 | |
2889 | /* Fix the opcode. */ | |
2890 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
2891 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
2892 | ||
2893 | /* Fix the relocation's type. */ | |
010ac81f KH |
2894 | irel->r_info = |
2895 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2896 | (ELF32_R_TYPE (irel->r_info) |
2897 | == (int) R_MN10300_GOTOFF32) | |
2898 | ? R_MN10300_GOTOFF24 | |
2899 | : (ELF32_R_TYPE (irel->r_info) | |
2900 | == (int) R_MN10300_GOT32) | |
2901 | ? R_MN10300_GOT24 : | |
010ac81f | 2902 | R_MN10300_24); |
31f8dc8f JL |
2903 | |
2904 | /* Delete one byte of data. */ | |
2905 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2906 | irel->r_offset + 3, 1)) | |
2907 | goto error_return; | |
2908 | ||
2909 | /* That will change things, so, we should relax | |
2910 | again. Note that this is not required, and it | |
010ac81f | 2911 | may be slow. */ |
b34976b6 | 2912 | *again = TRUE; |
31f8dc8f JL |
2913 | break; |
2914 | } | |
2915 | } | |
31f8dc8f JL |
2916 | } |
2917 | } | |
252b5132 RH |
2918 | |
2919 | /* See if the value will fit in 16 bits. | |
2920 | We allow any 16bit match here. We prune those we can't | |
2921 | handle below. */ | |
010ac81f | 2922 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
2923 | { |
2924 | unsigned char code; | |
2925 | ||
2926 | /* Most insns which have 32bit operands are 6 bytes long; | |
2927 | exceptions are pcrel insns and bit insns. | |
2928 | ||
2929 | We handle pcrel insns above. We don't bother trying | |
2930 | to handle the bit insns here. | |
2931 | ||
2932 | The first byte of the remaining insns will be 0xfc. */ | |
2933 | ||
2934 | /* Get the first opcode. */ | |
2935 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
2936 | ||
2937 | if (code != 0xfc) | |
2938 | continue; | |
2939 | ||
2940 | /* Get the second opcode. */ | |
2941 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2942 | ||
2943 | if ((code & 0xf0) < 0x80) | |
2944 | switch (code & 0xf0) | |
2945 | { | |
2946 | /* mov (d32,am),dn -> mov (d32,am),dn | |
2947 | mov dm,(d32,am) -> mov dn,(d32,am) | |
2948 | mov (d32,am),an -> mov (d32,am),an | |
2949 | mov dm,(d32,am) -> mov dn,(d32,am) | |
2950 | movbu (d32,am),dn -> movbu (d32,am),dn | |
2951 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
2952 | movhu (d32,am),dn -> movhu (d32,am),dn | |
2953 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
2954 | case 0x00: | |
2955 | case 0x10: | |
2956 | case 0x20: | |
2957 | case 0x30: | |
2958 | case 0x40: | |
2959 | case 0x50: | |
2960 | case 0x60: | |
2961 | case 0x70: | |
2962 | /* Not safe if the high bit is on as relaxing may | |
2963 | move the value out of high mem and thus not fit | |
2964 | in a signed 16bit value. */ | |
2965 | if (code == 0xcc | |
2966 | && (value & 0x8000)) | |
2967 | continue; | |
2968 | ||
2969 | /* Note that we've changed the relocation contents, etc. */ | |
2970 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2971 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2972 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2973 | |
2974 | /* Fix the opcode. */ | |
2975 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2976 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
2977 | ||
2978 | /* Fix the relocation's type. */ | |
2979 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2980 | (ELF32_R_TYPE (irel->r_info) |
2981 | == (int) R_MN10300_GOTOFF32) | |
2982 | ? R_MN10300_GOTOFF16 | |
2983 | : (ELF32_R_TYPE (irel->r_info) | |
2984 | == (int) R_MN10300_GOT32) | |
2985 | ? R_MN10300_GOT16 | |
2986 | : (ELF32_R_TYPE (irel->r_info) | |
2987 | == (int) R_MN10300_GOTPC32) | |
2988 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
2989 | R_MN10300_16); |
2990 | ||
2991 | /* Delete two bytes of data. */ | |
2992 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2993 | irel->r_offset + 2, 2)) | |
2994 | goto error_return; | |
2995 | ||
2996 | /* That will change things, so, we should relax again. | |
2997 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2998 | *again = TRUE; |
252b5132 RH |
2999 | break; |
3000 | } | |
3001 | else if ((code & 0xf0) == 0x80 | |
3002 | || (code & 0xf0) == 0x90) | |
3003 | switch (code & 0xf3) | |
3004 | { | |
3005 | /* mov dn,(abs32) -> mov dn,(abs16) | |
3006 | movbu dn,(abs32) -> movbu dn,(abs16) | |
3007 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
3008 | case 0x81: | |
3009 | case 0x82: | |
3010 | case 0x83: | |
3011 | /* Note that we've changed the relocation contents, etc. */ | |
3012 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3013 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3014 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3015 | |
3016 | if ((code & 0xf3) == 0x81) | |
3017 | code = 0x01 + (code & 0x0c); | |
3018 | else if ((code & 0xf3) == 0x82) | |
3019 | code = 0x02 + (code & 0x0c); | |
3020 | else if ((code & 0xf3) == 0x83) | |
3021 | code = 0x03 + (code & 0x0c); | |
3022 | else | |
3023 | abort (); | |
3024 | ||
3025 | /* Fix the opcode. */ | |
3026 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3027 | ||
3028 | /* Fix the relocation's type. */ | |
3029 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3030 | (ELF32_R_TYPE (irel->r_info) |
3031 | == (int) R_MN10300_GOTOFF32) | |
3032 | ? R_MN10300_GOTOFF16 | |
3033 | : (ELF32_R_TYPE (irel->r_info) | |
3034 | == (int) R_MN10300_GOT32) | |
3035 | ? R_MN10300_GOT16 | |
3036 | : (ELF32_R_TYPE (irel->r_info) | |
3037 | == (int) R_MN10300_GOTPC32) | |
3038 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3039 | R_MN10300_16); |
3040 | ||
3041 | /* The opcode got shorter too, so we have to fix the | |
3042 | addend and offset too! */ | |
3043 | irel->r_offset -= 1; | |
3044 | ||
3045 | /* Delete three bytes of data. */ | |
3046 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3047 | irel->r_offset + 1, 3)) | |
3048 | goto error_return; | |
3049 | ||
3050 | /* That will change things, so, we should relax again. | |
3051 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3052 | *again = TRUE; |
252b5132 RH |
3053 | break; |
3054 | ||
3055 | /* mov am,(abs32) -> mov am,(abs16) | |
3056 | mov am,(d32,sp) -> mov am,(d16,sp) | |
3057 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
3058 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
3059 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
3060 | case 0x80: | |
3061 | case 0x90: | |
3062 | case 0x91: | |
3063 | case 0x92: | |
3064 | case 0x93: | |
2a0fa943 AO |
3065 | /* sp-based offsets are zero-extended. */ |
3066 | if (code >= 0x90 && code <= 0x93 | |
3067 | && (long)value < 0) | |
3068 | continue; | |
3069 | ||
252b5132 RH |
3070 | /* Note that we've changed the relocation contents, etc. */ |
3071 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3072 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3073 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3074 | |
3075 | /* Fix the opcode. */ | |
3076 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3077 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3078 | ||
3079 | /* Fix the relocation's type. */ | |
3080 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3081 | (ELF32_R_TYPE (irel->r_info) |
3082 | == (int) R_MN10300_GOTOFF32) | |
3083 | ? R_MN10300_GOTOFF16 | |
3084 | : (ELF32_R_TYPE (irel->r_info) | |
3085 | == (int) R_MN10300_GOT32) | |
3086 | ? R_MN10300_GOT16 | |
3087 | : (ELF32_R_TYPE (irel->r_info) | |
3088 | == (int) R_MN10300_GOTPC32) | |
3089 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3090 | R_MN10300_16); |
3091 | ||
3092 | /* Delete two bytes of data. */ | |
3093 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3094 | irel->r_offset + 2, 2)) | |
3095 | goto error_return; | |
3096 | ||
3097 | /* That will change things, so, we should relax again. | |
3098 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3099 | *again = TRUE; |
252b5132 RH |
3100 | break; |
3101 | } | |
3102 | else if ((code & 0xf0) < 0xf0) | |
3103 | switch (code & 0xfc) | |
3104 | { | |
3105 | /* mov imm32,dn -> mov imm16,dn | |
3106 | mov imm32,an -> mov imm16,an | |
3107 | mov (abs32),dn -> mov (abs16),dn | |
3108 | movbu (abs32),dn -> movbu (abs16),dn | |
3109 | movhu (abs32),dn -> movhu (abs16),dn */ | |
3110 | case 0xcc: | |
3111 | case 0xdc: | |
3112 | case 0xa4: | |
3113 | case 0xa8: | |
3114 | case 0xac: | |
3115 | /* Not safe if the high bit is on as relaxing may | |
3116 | move the value out of high mem and thus not fit | |
3117 | in a signed 16bit value. */ | |
3118 | if (code == 0xcc | |
3119 | && (value & 0x8000)) | |
3120 | continue; | |
3121 | ||
2a0fa943 AO |
3122 | /* mov imm16, an zero-extends the immediate. */ |
3123 | if (code == 0xdc | |
3124 | && (long)value < 0) | |
3125 | continue; | |
3126 | ||
252b5132 RH |
3127 | /* Note that we've changed the relocation contents, etc. */ |
3128 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3129 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3130 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3131 | |
3132 | if ((code & 0xfc) == 0xcc) | |
3133 | code = 0x2c + (code & 0x03); | |
3134 | else if ((code & 0xfc) == 0xdc) | |
3135 | code = 0x24 + (code & 0x03); | |
3136 | else if ((code & 0xfc) == 0xa4) | |
3137 | code = 0x30 + (code & 0x03); | |
3138 | else if ((code & 0xfc) == 0xa8) | |
3139 | code = 0x34 + (code & 0x03); | |
3140 | else if ((code & 0xfc) == 0xac) | |
3141 | code = 0x38 + (code & 0x03); | |
3142 | else | |
3143 | abort (); | |
3144 | ||
3145 | /* Fix the opcode. */ | |
3146 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3147 | ||
3148 | /* Fix the relocation's type. */ | |
3149 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3150 | (ELF32_R_TYPE (irel->r_info) |
3151 | == (int) R_MN10300_GOTOFF32) | |
3152 | ? R_MN10300_GOTOFF16 | |
3153 | : (ELF32_R_TYPE (irel->r_info) | |
3154 | == (int) R_MN10300_GOT32) | |
3155 | ? R_MN10300_GOT16 | |
3156 | : (ELF32_R_TYPE (irel->r_info) | |
3157 | == (int) R_MN10300_GOTPC32) | |
3158 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3159 | R_MN10300_16); |
3160 | ||
3161 | /* The opcode got shorter too, so we have to fix the | |
3162 | addend and offset too! */ | |
3163 | irel->r_offset -= 1; | |
3164 | ||
3165 | /* Delete three bytes of data. */ | |
3166 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3167 | irel->r_offset + 1, 3)) | |
3168 | goto error_return; | |
3169 | ||
3170 | /* That will change things, so, we should relax again. | |
3171 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3172 | *again = TRUE; |
252b5132 RH |
3173 | break; |
3174 | ||
3175 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
3176 | mov (d32,sp),an -> mov (d16,sp),an |
3177 | mov (d32,sp),dn -> mov (d16,sp),dn | |
3178 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
3179 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
3180 | add imm32,dn -> add imm16,dn |
3181 | cmp imm32,dn -> cmp imm16,dn | |
3182 | add imm32,an -> add imm16,an | |
3183 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
3184 | and imm32,dn -> and imm16,dn |
3185 | or imm32,dn -> or imm16,dn | |
3186 | xor imm32,dn -> xor imm16,dn | |
3187 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
3188 | |
3189 | case 0xa0: | |
3190 | case 0xb0: | |
3191 | case 0xb1: | |
3192 | case 0xb2: | |
3193 | case 0xb3: | |
3194 | case 0xc0: | |
3195 | case 0xc8: | |
3196 | ||
3197 | case 0xd0: | |
3198 | case 0xd8: | |
3199 | case 0xe0: | |
3200 | case 0xe1: | |
3201 | case 0xe2: | |
3202 | case 0xe3: | |
2a0fa943 AO |
3203 | /* cmp imm16, an zero-extends the immediate. */ |
3204 | if (code == 0xdc | |
3205 | && (long)value < 0) | |
3206 | continue; | |
3207 | ||
3208 | /* So do sp-based offsets. */ | |
3209 | if (code >= 0xb0 && code <= 0xb3 | |
3210 | && (long)value < 0) | |
3211 | continue; | |
3212 | ||
252b5132 RH |
3213 | /* Note that we've changed the relocation contents, etc. */ |
3214 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3215 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3216 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3217 | |
3218 | /* Fix the opcode. */ | |
3219 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3220 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3221 | ||
3222 | /* Fix the relocation's type. */ | |
3223 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3224 | (ELF32_R_TYPE (irel->r_info) |
3225 | == (int) R_MN10300_GOTOFF32) | |
3226 | ? R_MN10300_GOTOFF16 | |
3227 | : (ELF32_R_TYPE (irel->r_info) | |
3228 | == (int) R_MN10300_GOT32) | |
3229 | ? R_MN10300_GOT16 | |
3230 | : (ELF32_R_TYPE (irel->r_info) | |
3231 | == (int) R_MN10300_GOTPC32) | |
3232 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3233 | R_MN10300_16); |
3234 | ||
3235 | /* Delete two bytes of data. */ | |
3236 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3237 | irel->r_offset + 2, 2)) | |
3238 | goto error_return; | |
3239 | ||
3240 | /* That will change things, so, we should relax again. | |
3241 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3242 | *again = TRUE; |
252b5132 RH |
3243 | break; |
3244 | } | |
3245 | else if (code == 0xfe) | |
3246 | { | |
3247 | /* add imm32,sp -> add imm16,sp */ | |
3248 | ||
3249 | /* Note that we've changed the relocation contents, etc. */ | |
3250 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3251 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3252 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3253 | |
3254 | /* Fix the opcode. */ | |
3255 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3256 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
3257 | ||
3258 | /* Fix the relocation's type. */ | |
3259 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3260 | (ELF32_R_TYPE (irel->r_info) |
3261 | == (int) R_MN10300_GOT32) | |
3262 | ? R_MN10300_GOT16 | |
3263 | : (ELF32_R_TYPE (irel->r_info) | |
3264 | == (int) R_MN10300_GOTOFF32) | |
3265 | ? R_MN10300_GOTOFF16 | |
3266 | : (ELF32_R_TYPE (irel->r_info) | |
3267 | == (int) R_MN10300_GOTPC32) | |
3268 | ? R_MN10300_GOTPC16 : | |
010ac81f | 3269 | R_MN10300_16); |
252b5132 RH |
3270 | |
3271 | /* Delete two bytes of data. */ | |
3272 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3273 | irel->r_offset + 2, 2)) | |
3274 | goto error_return; | |
3275 | ||
3276 | /* That will change things, so, we should relax again. | |
3277 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3278 | *again = TRUE; |
252b5132 RH |
3279 | break; |
3280 | } | |
3281 | } | |
3282 | } | |
3283 | } | |
3284 | ||
6cdc0ccc AM |
3285 | if (isymbuf != NULL |
3286 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3287 | { |
3288 | if (! link_info->keep_memory) | |
6cdc0ccc | 3289 | free (isymbuf); |
252b5132 RH |
3290 | else |
3291 | { | |
6cdc0ccc AM |
3292 | /* Cache the symbols for elf_link_input_bfd. */ |
3293 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3294 | } |
9ad5cbcf AM |
3295 | } |
3296 | ||
6cdc0ccc AM |
3297 | if (contents != NULL |
3298 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
3299 | { |
3300 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3301 | free (contents); |
3302 | else | |
252b5132 | 3303 | { |
6cdc0ccc AM |
3304 | /* Cache the section contents for elf_link_input_bfd. */ |
3305 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 3306 | } |
252b5132 RH |
3307 | } |
3308 | ||
6cdc0ccc AM |
3309 | if (internal_relocs != NULL |
3310 | && elf_section_data (sec)->relocs != internal_relocs) | |
3311 | free (internal_relocs); | |
3312 | ||
b34976b6 | 3313 | return TRUE; |
252b5132 RH |
3314 | |
3315 | error_return: | |
6cdc0ccc AM |
3316 | if (isymbuf != NULL |
3317 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3318 | free (isymbuf); | |
3319 | if (contents != NULL | |
3320 | && elf_section_data (section)->this_hdr.contents != contents) | |
3321 | free (contents); | |
3322 | if (internal_relocs != NULL | |
3323 | && elf_section_data (section)->relocs != internal_relocs) | |
3324 | free (internal_relocs); | |
9ad5cbcf | 3325 | |
b34976b6 | 3326 | return FALSE; |
252b5132 RH |
3327 | } |
3328 | ||
3329 | /* Compute the stack size and movm arguments for the function | |
3330 | referred to by HASH at address ADDR in section with | |
3331 | contents CONTENTS, store the information in the hash table. */ | |
3332 | static void | |
3333 | compute_function_info (abfd, hash, addr, contents) | |
3334 | bfd *abfd; | |
3335 | struct elf32_mn10300_link_hash_entry *hash; | |
3336 | bfd_vma addr; | |
3337 | unsigned char *contents; | |
3338 | { | |
3339 | unsigned char byte1, byte2; | |
3340 | /* We only care about a very small subset of the possible prologue | |
3341 | sequences here. Basically we look for: | |
3342 | ||
3343 | movm [d2,d3,a2,a3],sp (optional) | |
3344 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
3345 | 8 bit number) | |
3346 | ||
3347 | If we find anything else, we quit. */ | |
3348 | ||
3349 | /* Look for movm [regs],sp */ | |
3350 | byte1 = bfd_get_8 (abfd, contents + addr); | |
3351 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
3352 | ||
3353 | if (byte1 == 0xcf) | |
3354 | { | |
3355 | hash->movm_args = byte2; | |
3356 | addr += 2; | |
3357 | byte1 = bfd_get_8 (abfd, contents + addr); | |
3358 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
3359 | } | |
3360 | ||
3361 | /* Now figure out how much stack space will be allocated by the movm | |
4cc11e76 | 3362 | instruction. We need this kept separate from the function's normal |
252b5132 RH |
3363 | stack space. */ |
3364 | if (hash->movm_args) | |
3365 | { | |
3366 | /* Space for d2. */ | |
3367 | if (hash->movm_args & 0x80) | |
3368 | hash->movm_stack_size += 4; | |
3369 | ||
3370 | /* Space for d3. */ | |
3371 | if (hash->movm_args & 0x40) | |
3372 | hash->movm_stack_size += 4; | |
3373 | ||
3374 | /* Space for a2. */ | |
3375 | if (hash->movm_args & 0x20) | |
3376 | hash->movm_stack_size += 4; | |
3377 | ||
3378 | /* Space for a3. */ | |
3379 | if (hash->movm_args & 0x10) | |
3380 | hash->movm_stack_size += 4; | |
3381 | ||
3382 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
3383 | if (hash->movm_args & 0x08) | |
3384 | hash->movm_stack_size += 8 * 4; | |
3385 | ||
b08fa4d3 AO |
3386 | if (bfd_get_mach (abfd) == bfd_mach_am33 |
3387 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
31f8dc8f JL |
3388 | { |
3389 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
3390 | if (hash->movm_args & 0x1) | |
3391 | hash->movm_stack_size += 6 * 4; | |
3392 | ||
3393 | /* exreg1 space. e4, e5, e6, e7 */ | |
3394 | if (hash->movm_args & 0x2) | |
3395 | hash->movm_stack_size += 4 * 4; | |
3396 | ||
3397 | /* exreg0 space. e2, e3 */ | |
3398 | if (hash->movm_args & 0x4) | |
3399 | hash->movm_stack_size += 2 * 4; | |
3400 | } | |
252b5132 RH |
3401 | } |
3402 | ||
3403 | /* Now look for the two stack adjustment variants. */ | |
3404 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
3405 | { | |
3406 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
3407 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
3408 | ||
3409 | hash->stack_size = -temp; | |
3410 | } | |
3411 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
3412 | { | |
3413 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
3414 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
3415 | temp = -temp; | |
3416 | ||
3417 | if (temp < 255) | |
3418 | hash->stack_size = temp; | |
3419 | } | |
3420 | ||
3421 | /* If the total stack to be allocated by the call instruction is more | |
3422 | than 255 bytes, then we can't remove the stack adjustment by using | |
3423 | "call" (we might still be able to remove the "movm" instruction. */ | |
3424 | if (hash->stack_size + hash->movm_stack_size > 255) | |
3425 | hash->stack_size = 0; | |
3426 | ||
3427 | return; | |
3428 | } | |
3429 | ||
3430 | /* Delete some bytes from a section while relaxing. */ | |
3431 | ||
b34976b6 | 3432 | static bfd_boolean |
252b5132 RH |
3433 | mn10300_elf_relax_delete_bytes (abfd, sec, addr, count) |
3434 | bfd *abfd; | |
3435 | asection *sec; | |
3436 | bfd_vma addr; | |
3437 | int count; | |
3438 | { | |
3439 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 3440 | unsigned int sec_shndx; |
252b5132 RH |
3441 | bfd_byte *contents; |
3442 | Elf_Internal_Rela *irel, *irelend; | |
3443 | Elf_Internal_Rela *irelalign; | |
3444 | bfd_vma toaddr; | |
6cdc0ccc | 3445 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf AM |
3446 | struct elf_link_hash_entry **sym_hashes; |
3447 | struct elf_link_hash_entry **end_hashes; | |
3448 | unsigned int symcount; | |
252b5132 | 3449 | |
9ad5cbcf | 3450 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
252b5132 RH |
3451 | |
3452 | contents = elf_section_data (sec)->this_hdr.contents; | |
3453 | ||
3454 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
3455 | power larger than the number of bytes we are deleting. */ | |
3456 | ||
3457 | irelalign = NULL; | |
eea6121a | 3458 | toaddr = sec->size; |
252b5132 RH |
3459 | |
3460 | irel = elf_section_data (sec)->relocs; | |
3461 | irelend = irel + sec->reloc_count; | |
3462 | ||
3463 | /* Actually delete the bytes. */ | |
dc810e39 AM |
3464 | memmove (contents + addr, contents + addr + count, |
3465 | (size_t) (toaddr - addr - count)); | |
eea6121a | 3466 | sec->size -= count; |
252b5132 RH |
3467 | |
3468 | /* Adjust all the relocs. */ | |
3469 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
3470 | { | |
3471 | /* Get the new reloc address. */ | |
3472 | if ((irel->r_offset > addr | |
3473 | && irel->r_offset < toaddr)) | |
3474 | irel->r_offset -= count; | |
3475 | } | |
3476 | ||
3477 | /* Adjust the local symbols defined in this section. */ | |
6cdc0ccc AM |
3478 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3479 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3480 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
252b5132 | 3481 | { |
6cdc0ccc AM |
3482 | if (isym->st_shndx == sec_shndx |
3483 | && isym->st_value > addr | |
3484 | && isym->st_value < toaddr) | |
3485 | isym->st_value -= count; | |
252b5132 RH |
3486 | } |
3487 | ||
3488 | /* Now adjust the global symbols defined in this section. */ | |
9ad5cbcf AM |
3489 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3490 | - symtab_hdr->sh_info); | |
3491 | sym_hashes = elf_sym_hashes (abfd); | |
3492 | end_hashes = sym_hashes + symcount; | |
3493 | for (; sym_hashes < end_hashes; sym_hashes++) | |
252b5132 | 3494 | { |
9ad5cbcf AM |
3495 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
3496 | if ((sym_hash->root.type == bfd_link_hash_defined | |
3497 | || sym_hash->root.type == bfd_link_hash_defweak) | |
3498 | && sym_hash->root.u.def.section == sec | |
3499 | && sym_hash->root.u.def.value > addr | |
3500 | && sym_hash->root.u.def.value < toaddr) | |
252b5132 | 3501 | { |
9ad5cbcf | 3502 | sym_hash->root.u.def.value -= count; |
252b5132 RH |
3503 | } |
3504 | } | |
3505 | ||
b34976b6 | 3506 | return TRUE; |
252b5132 RH |
3507 | } |
3508 | ||
b34976b6 AM |
3509 | /* Return TRUE if a symbol exists at the given address, else return |
3510 | FALSE. */ | |
3511 | static bfd_boolean | |
6cdc0ccc | 3512 | mn10300_elf_symbol_address_p (abfd, sec, isym, addr) |
252b5132 RH |
3513 | bfd *abfd; |
3514 | asection *sec; | |
6cdc0ccc | 3515 | Elf_Internal_Sym *isym; |
252b5132 RH |
3516 | bfd_vma addr; |
3517 | { | |
3518 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 3519 | unsigned int sec_shndx; |
6cdc0ccc | 3520 | Elf_Internal_Sym *isymend; |
9ad5cbcf AM |
3521 | struct elf_link_hash_entry **sym_hashes; |
3522 | struct elf_link_hash_entry **end_hashes; | |
3523 | unsigned int symcount; | |
252b5132 | 3524 | |
9ad5cbcf | 3525 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
252b5132 RH |
3526 | |
3527 | /* Examine all the symbols. */ | |
9ad5cbcf | 3528 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
6cdc0ccc | 3529 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) |
252b5132 | 3530 | { |
6cdc0ccc AM |
3531 | if (isym->st_shndx == sec_shndx |
3532 | && isym->st_value == addr) | |
b34976b6 | 3533 | return TRUE; |
252b5132 RH |
3534 | } |
3535 | ||
9ad5cbcf AM |
3536 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3537 | - symtab_hdr->sh_info); | |
3538 | sym_hashes = elf_sym_hashes (abfd); | |
3539 | end_hashes = sym_hashes + symcount; | |
3540 | for (; sym_hashes < end_hashes; sym_hashes++) | |
252b5132 | 3541 | { |
9ad5cbcf AM |
3542 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
3543 | if ((sym_hash->root.type == bfd_link_hash_defined | |
3544 | || sym_hash->root.type == bfd_link_hash_defweak) | |
3545 | && sym_hash->root.u.def.section == sec | |
3546 | && sym_hash->root.u.def.value == addr) | |
b34976b6 | 3547 | return TRUE; |
252b5132 | 3548 | } |
9ad5cbcf | 3549 | |
b34976b6 | 3550 | return FALSE; |
252b5132 RH |
3551 | } |
3552 | ||
3553 | /* This is a version of bfd_generic_get_relocated_section_contents | |
3554 | which uses mn10300_elf_relocate_section. */ | |
3555 | ||
3556 | static bfd_byte * | |
3557 | mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, | |
1049f94e | 3558 | data, relocatable, symbols) |
252b5132 RH |
3559 | bfd *output_bfd; |
3560 | struct bfd_link_info *link_info; | |
3561 | struct bfd_link_order *link_order; | |
3562 | bfd_byte *data; | |
1049f94e | 3563 | bfd_boolean relocatable; |
252b5132 RH |
3564 | asymbol **symbols; |
3565 | { | |
3566 | Elf_Internal_Shdr *symtab_hdr; | |
3567 | asection *input_section = link_order->u.indirect.section; | |
3568 | bfd *input_bfd = input_section->owner; | |
3569 | asection **sections = NULL; | |
3570 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 3571 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
3572 | |
3573 | /* We only need to handle the case of relaxing, or of having a | |
3574 | particular set of section contents, specially. */ | |
1049f94e | 3575 | if (relocatable |
252b5132 RH |
3576 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
3577 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3578 | link_order, data, | |
1049f94e | 3579 | relocatable, |
252b5132 RH |
3580 | symbols); |
3581 | ||
3582 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3583 | ||
3584 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
eea6121a | 3585 | (size_t) input_section->size); |
252b5132 RH |
3586 | |
3587 | if ((input_section->flags & SEC_RELOC) != 0 | |
3588 | && input_section->reloc_count > 0) | |
3589 | { | |
252b5132 | 3590 | asection **secpp; |
6cdc0ccc | 3591 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 3592 | bfd_size_type amt; |
252b5132 | 3593 | |
45d6a902 | 3594 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 | 3595 | (input_bfd, input_section, (PTR) NULL, |
b34976b6 | 3596 | (Elf_Internal_Rela *) NULL, FALSE)); |
252b5132 RH |
3597 | if (internal_relocs == NULL) |
3598 | goto error_return; | |
3599 | ||
6cdc0ccc AM |
3600 | if (symtab_hdr->sh_info != 0) |
3601 | { | |
3602 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3603 | if (isymbuf == NULL) | |
3604 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3605 | symtab_hdr->sh_info, 0, | |
3606 | NULL, NULL, NULL); | |
3607 | if (isymbuf == NULL) | |
3608 | goto error_return; | |
3609 | } | |
252b5132 | 3610 | |
9ad5cbcf AM |
3611 | amt = symtab_hdr->sh_info; |
3612 | amt *= sizeof (asection *); | |
3613 | sections = (asection **) bfd_malloc (amt); | |
3614 | if (sections == NULL && amt != 0) | |
252b5132 RH |
3615 | goto error_return; |
3616 | ||
6cdc0ccc AM |
3617 | isymend = isymbuf + symtab_hdr->sh_info; |
3618 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
3619 | { |
3620 | asection *isec; | |
3621 | ||
6cdc0ccc | 3622 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3623 | isec = bfd_und_section_ptr; |
6cdc0ccc | 3624 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3625 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 3626 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
3627 | isec = bfd_com_section_ptr; |
3628 | else | |
6cdc0ccc | 3629 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
3630 | |
3631 | *secpp = isec; | |
3632 | } | |
3633 | ||
3634 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
3635 | input_section, data, internal_relocs, | |
6cdc0ccc | 3636 | isymbuf, sections)) |
252b5132 RH |
3637 | goto error_return; |
3638 | ||
3639 | if (sections != NULL) | |
3640 | free (sections); | |
6cdc0ccc AM |
3641 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
3642 | free (isymbuf); | |
252b5132 RH |
3643 | if (internal_relocs != elf_section_data (input_section)->relocs) |
3644 | free (internal_relocs); | |
252b5132 RH |
3645 | } |
3646 | ||
3647 | return data; | |
3648 | ||
3649 | error_return: | |
6cdc0ccc AM |
3650 | if (sections != NULL) |
3651 | free (sections); | |
3652 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3653 | free (isymbuf); | |
252b5132 RH |
3654 | if (internal_relocs != NULL |
3655 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3656 | free (internal_relocs); | |
252b5132 RH |
3657 | return NULL; |
3658 | } | |
3659 | ||
3660 | /* Assorted hash table functions. */ | |
3661 | ||
3662 | /* Initialize an entry in the link hash table. */ | |
3663 | ||
3664 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
3665 | ||
3666 | static struct bfd_hash_entry * | |
3667 | elf32_mn10300_link_hash_newfunc (entry, table, string) | |
3668 | struct bfd_hash_entry *entry; | |
3669 | struct bfd_hash_table *table; | |
3670 | const char *string; | |
3671 | { | |
3672 | struct elf32_mn10300_link_hash_entry *ret = | |
3673 | (struct elf32_mn10300_link_hash_entry *) entry; | |
3674 | ||
3675 | /* Allocate the structure if it has not already been allocated by a | |
3676 | subclass. */ | |
3677 | if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) | |
3678 | ret = ((struct elf32_mn10300_link_hash_entry *) | |
3679 | bfd_hash_allocate (table, | |
3680 | sizeof (struct elf32_mn10300_link_hash_entry))); | |
3681 | if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) | |
3682 | return (struct bfd_hash_entry *) ret; | |
3683 | ||
3684 | /* Call the allocation method of the superclass. */ | |
3685 | ret = ((struct elf32_mn10300_link_hash_entry *) | |
3686 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3687 | table, string)); | |
3688 | if (ret != (struct elf32_mn10300_link_hash_entry *) NULL) | |
3689 | { | |
3690 | ret->direct_calls = 0; | |
3691 | ret->stack_size = 0; | |
5354b572 | 3692 | ret->movm_args = 0; |
252b5132 RH |
3693 | ret->movm_stack_size = 0; |
3694 | ret->flags = 0; | |
252b5132 RH |
3695 | } |
3696 | ||
3697 | return (struct bfd_hash_entry *) ret; | |
3698 | } | |
3699 | ||
3700 | /* Create an mn10300 ELF linker hash table. */ | |
3701 | ||
3702 | static struct bfd_link_hash_table * | |
3703 | elf32_mn10300_link_hash_table_create (abfd) | |
3704 | bfd *abfd; | |
3705 | { | |
3706 | struct elf32_mn10300_link_hash_table *ret; | |
dc810e39 | 3707 | bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table); |
252b5132 | 3708 | |
e2d34d7d | 3709 | ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3710 | if (ret == (struct elf32_mn10300_link_hash_table *) NULL) |
3711 | return NULL; | |
3712 | ||
3713 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3714 | elf32_mn10300_link_hash_newfunc)) | |
3715 | { | |
e2d34d7d | 3716 | free (ret); |
252b5132 RH |
3717 | return NULL; |
3718 | } | |
3719 | ||
3720 | ret->flags = 0; | |
dc810e39 | 3721 | amt = sizeof (struct elf_link_hash_table); |
252b5132 | 3722 | ret->static_hash_table |
e2d34d7d | 3723 | = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3724 | if (ret->static_hash_table == NULL) |
3725 | { | |
e2d34d7d | 3726 | free (ret); |
252b5132 RH |
3727 | return NULL; |
3728 | } | |
3729 | ||
3730 | if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, | |
3731 | elf32_mn10300_link_hash_newfunc)) | |
3732 | { | |
e2d34d7d DJ |
3733 | free (ret->static_hash_table); |
3734 | free (ret); | |
252b5132 RH |
3735 | return NULL; |
3736 | } | |
3737 | return &ret->root.root; | |
3738 | } | |
3739 | ||
e2d34d7d DJ |
3740 | /* Free an mn10300 ELF linker hash table. */ |
3741 | ||
3742 | static void | |
3743 | elf32_mn10300_link_hash_table_free (hash) | |
3744 | struct bfd_link_hash_table *hash; | |
3745 | { | |
3746 | struct elf32_mn10300_link_hash_table *ret | |
3747 | = (struct elf32_mn10300_link_hash_table *) hash; | |
3748 | ||
3749 | _bfd_generic_link_hash_table_free | |
3750 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
3751 | _bfd_generic_link_hash_table_free | |
3752 | ((struct bfd_link_hash_table *) ret); | |
3753 | } | |
3754 | ||
dc810e39 | 3755 | static unsigned long |
252b5132 RH |
3756 | elf_mn10300_mach (flags) |
3757 | flagword flags; | |
3758 | { | |
3759 | switch (flags & EF_MN10300_MACH) | |
3760 | { | |
010ac81f KH |
3761 | case E_MN10300_MACH_MN10300: |
3762 | default: | |
3763 | return bfd_mach_mn10300; | |
252b5132 | 3764 | |
010ac81f KH |
3765 | case E_MN10300_MACH_AM33: |
3766 | return bfd_mach_am33; | |
b08fa4d3 AO |
3767 | |
3768 | case E_MN10300_MACH_AM33_2: | |
3769 | return bfd_mach_am33_2; | |
252b5132 RH |
3770 | } |
3771 | } | |
3772 | ||
3773 | /* The final processing done just before writing out a MN10300 ELF object | |
3774 | file. This gets the MN10300 architecture right based on the machine | |
3775 | number. */ | |
3776 | ||
252b5132 RH |
3777 | void |
3778 | _bfd_mn10300_elf_final_write_processing (abfd, linker) | |
3779 | bfd *abfd; | |
b34976b6 | 3780 | bfd_boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
3781 | { |
3782 | unsigned long val; | |
252b5132 RH |
3783 | |
3784 | switch (bfd_get_mach (abfd)) | |
3785 | { | |
010ac81f KH |
3786 | default: |
3787 | case bfd_mach_mn10300: | |
3788 | val = E_MN10300_MACH_MN10300; | |
3789 | break; | |
3790 | ||
3791 | case bfd_mach_am33: | |
3792 | val = E_MN10300_MACH_AM33; | |
3793 | break; | |
b08fa4d3 AO |
3794 | |
3795 | case bfd_mach_am33_2: | |
3796 | val = E_MN10300_MACH_AM33_2; | |
3797 | break; | |
252b5132 RH |
3798 | } |
3799 | ||
3800 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
3801 | elf_elfheader (abfd)->e_flags |= val; | |
3802 | } | |
3803 | ||
b34976b6 | 3804 | bfd_boolean |
252b5132 RH |
3805 | _bfd_mn10300_elf_object_p (abfd) |
3806 | bfd *abfd; | |
3807 | { | |
3808 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 3809 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 3810 | return TRUE; |
252b5132 RH |
3811 | } |
3812 | ||
3813 | /* Merge backend specific data from an object file to the output | |
3814 | object file when linking. */ | |
3815 | ||
b34976b6 | 3816 | bfd_boolean |
252b5132 RH |
3817 | _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) |
3818 | bfd *ibfd; | |
3819 | bfd *obfd; | |
3820 | { | |
3821 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3822 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3823 | return TRUE; |
252b5132 RH |
3824 | |
3825 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
3826 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
3827 | { | |
3828 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3829 | bfd_get_mach (ibfd))) | |
b34976b6 | 3830 | return FALSE; |
252b5132 RH |
3831 | } |
3832 | ||
b34976b6 | 3833 | return TRUE; |
252b5132 RH |
3834 | } |
3835 | ||
03a12831 AO |
3836 | #define PLT0_ENTRY_SIZE 15 |
3837 | #define PLT_ENTRY_SIZE 20 | |
3838 | #define PIC_PLT_ENTRY_SIZE 24 | |
3839 | ||
3840 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
3841 | { | |
3842 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
3843 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
3844 | 0xf0, 0xf4, /* jmp (a0) */ | |
3845 | }; | |
3846 | ||
3847 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
3848 | { | |
3849 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
3850 | 0xf0, 0xf4, /* jmp (a0) */ | |
3851 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
3852 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
3853 | }; | |
3854 | ||
3855 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
3856 | { | |
3857 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
3858 | 0xf0, 0xf4, /* jmp (a0) */ | |
3859 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
3860 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
3861 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
3862 | 0xf0, 0xf4, /* jmp (a0) */ | |
3863 | }; | |
3864 | ||
3865 | /* Return size of the first PLT entry. */ | |
3866 | #define elf_mn10300_sizeof_plt0(info) \ | |
3867 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
3868 | ||
3869 | /* Return size of a PLT entry. */ | |
3870 | #define elf_mn10300_sizeof_plt(info) \ | |
3871 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
3872 | ||
3873 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
3874 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
3875 | ||
3876 | /* Return offset of the linker in PLT0 entry. */ | |
3877 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
3878 | ||
3879 | /* Return offset of the GOT id in PLT0 entry. */ | |
3880 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
3881 | ||
4cc11e76 | 3882 | /* Return offset of the temporary in PLT entry */ |
03a12831 AO |
3883 | #define elf_mn10300_plt_temp_offset(info) 8 |
3884 | ||
3885 | /* Return offset of the symbol in PLT entry. */ | |
3886 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
3887 | ||
3888 | /* Return offset of the relocation in PLT entry. */ | |
3889 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
3890 | ||
3891 | /* The name of the dynamic interpreter. This is put in the .interp | |
3892 | section. */ | |
3893 | ||
3894 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
3895 | ||
3896 | /* Create dynamic sections when linking against a dynamic object. */ | |
3897 | ||
3898 | static bfd_boolean | |
3899 | _bfd_mn10300_elf_create_dynamic_sections (abfd, info) | |
3900 | bfd *abfd; | |
3901 | struct bfd_link_info *info; | |
3902 | { | |
3903 | flagword flags; | |
3904 | asection * s; | |
9c5bfbb7 | 3905 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
3906 | int ptralign = 0; |
3907 | ||
3908 | switch (bed->s->arch_size) | |
3909 | { | |
3910 | case 32: | |
3911 | ptralign = 2; | |
3912 | break; | |
3913 | ||
3914 | case 64: | |
3915 | ptralign = 3; | |
3916 | break; | |
3917 | ||
3918 | default: | |
3919 | bfd_set_error (bfd_error_bad_value); | |
3920 | return FALSE; | |
3921 | } | |
3922 | ||
3923 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3924 | .rel[a].bss sections. */ | |
3925 | ||
3926 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3927 | | SEC_LINKER_CREATED); | |
3928 | ||
3929 | s = bfd_make_section (abfd, | |
3930 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); | |
3931 | if (s == NULL | |
3932 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3933 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
3934 | return FALSE; | |
3935 | ||
3936 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
3937 | return FALSE; | |
3938 | ||
3939 | { | |
3940 | const char * secname; | |
3941 | char * relname; | |
3942 | flagword secflags; | |
3943 | asection * sec; | |
3944 | ||
3945 | for (sec = abfd->sections; sec; sec = sec->next) | |
3946 | { | |
3947 | secflags = bfd_get_section_flags (abfd, sec); | |
3948 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
3949 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
3950 | continue; | |
3951 | ||
3952 | secname = bfd_get_section_name (abfd, sec); | |
3953 | relname = (char *) bfd_malloc (strlen (secname) + 6); | |
3954 | strcpy (relname, ".rela"); | |
3955 | strcat (relname, secname); | |
3956 | ||
3957 | s = bfd_make_section (abfd, relname); | |
3958 | if (s == NULL | |
3959 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3960 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
3961 | return FALSE; | |
3962 | } | |
3963 | } | |
3964 | ||
3965 | if (bed->want_dynbss) | |
3966 | { | |
3967 | /* The .dynbss section is a place to put symbols which are defined | |
3968 | by dynamic objects, are referenced by regular objects, and are | |
3969 | not functions. We must allocate space for them in the process | |
3970 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3971 | initialize them at run time. The linker script puts the .dynbss | |
3972 | section into the .bss section of the final image. */ | |
3973 | s = bfd_make_section (abfd, ".dynbss"); | |
3974 | if (s == NULL | |
3975 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
3976 | return FALSE; | |
3977 | ||
3978 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3979 | normally needed. We need to create it here, though, so that the | |
3980 | linker will map it to an output section. We can't just create it | |
3981 | only if we need it, because we will not know whether we need it | |
3982 | until we have seen all the input files, and the first time the | |
3983 | main linker code calls BFD after examining all the input files | |
3984 | (size_dynamic_sections) the input sections have already been | |
3985 | mapped to the output sections. If the section turns out not to | |
3986 | be needed, we can discard it later. We will never need this | |
3987 | section when generating a shared object, since they do not use | |
3988 | copy relocs. */ | |
3989 | if (! info->shared) | |
3990 | { | |
3991 | s = bfd_make_section (abfd, | |
3992 | (bed->default_use_rela_p | |
3993 | ? ".rela.bss" : ".rel.bss")); | |
3994 | if (s == NULL | |
3995 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3996 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
3997 | return FALSE; | |
3998 | } | |
3999 | } | |
4000 | ||
4001 | return TRUE; | |
4002 | } | |
4003 | \f | |
4004 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4005 | regular object. The current definition is in some section of the | |
4006 | dynamic object, but we're not including those sections. We have to | |
4007 | change the definition to something the rest of the link can | |
4008 | understand. */ | |
4009 | ||
4010 | static bfd_boolean | |
4011 | _bfd_mn10300_elf_adjust_dynamic_symbol (info, h) | |
4012 | struct bfd_link_info * info; | |
4013 | struct elf_link_hash_entry * h; | |
4014 | { | |
4015 | bfd * dynobj; | |
4016 | asection * s; | |
4017 | unsigned int power_of_two; | |
4018 | ||
4019 | dynobj = elf_hash_table (info)->dynobj; | |
4020 | ||
4021 | /* Make sure we know what is going on here. */ | |
4022 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4023 | && (h->needs_plt |
f6e332e6 | 4024 | || h->u.weakdef != NULL |
f5385ebf AM |
4025 | || (h->def_dynamic |
4026 | && h->ref_regular | |
4027 | && !h->def_regular))); | |
03a12831 AO |
4028 | |
4029 | /* If this is a function, put it in the procedure linkage table. We | |
4030 | will fill in the contents of the procedure linkage table later, | |
4031 | when we know the address of the .got section. */ | |
4032 | if (h->type == STT_FUNC | |
f5385ebf | 4033 | || h->needs_plt) |
03a12831 AO |
4034 | { |
4035 | if (! info->shared | |
f5385ebf AM |
4036 | && !h->def_dynamic |
4037 | && !h->ref_dynamic) | |
03a12831 AO |
4038 | { |
4039 | /* This case can occur if we saw a PLT reloc in an input | |
4040 | file, but the symbol was never referred to by a dynamic | |
4041 | object. In such a case, we don't actually need to build | |
4042 | a procedure linkage table, and we can just do a REL32 | |
4043 | reloc instead. */ | |
f5385ebf | 4044 | BFD_ASSERT (h->needs_plt); |
03a12831 AO |
4045 | return TRUE; |
4046 | } | |
4047 | ||
4048 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4049 | if (h->dynindx == -1) | |
4050 | { | |
c152c796 | 4051 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
4052 | return FALSE; |
4053 | } | |
4054 | ||
4055 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
4056 | BFD_ASSERT (s != NULL); | |
4057 | ||
4058 | /* If this is the first .plt entry, make room for the special | |
4059 | first entry. */ | |
eea6121a AM |
4060 | if (s->size == 0) |
4061 | s->size += elf_mn10300_sizeof_plt0 (info); | |
03a12831 AO |
4062 | |
4063 | /* If this symbol is not defined in a regular file, and we are | |
4064 | not generating a shared library, then set the symbol to this | |
4065 | location in the .plt. This is required to make function | |
4066 | pointers compare as equal between the normal executable and | |
4067 | the shared library. */ | |
4068 | if (! info->shared | |
f5385ebf | 4069 | && !h->def_regular) |
03a12831 AO |
4070 | { |
4071 | h->root.u.def.section = s; | |
eea6121a | 4072 | h->root.u.def.value = s->size; |
03a12831 AO |
4073 | } |
4074 | ||
eea6121a | 4075 | h->plt.offset = s->size; |
03a12831 AO |
4076 | |
4077 | /* Make room for this entry. */ | |
eea6121a | 4078 | s->size += elf_mn10300_sizeof_plt (info); |
03a12831 AO |
4079 | |
4080 | /* We also need to make an entry in the .got.plt section, which | |
4081 | will be placed in the .got section by the linker script. */ | |
4082 | ||
4083 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4084 | BFD_ASSERT (s != NULL); | |
eea6121a | 4085 | s->size += 4; |
03a12831 AO |
4086 | |
4087 | /* We also need to make an entry in the .rela.plt section. */ | |
4088 | ||
4089 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4090 | BFD_ASSERT (s != NULL); | |
eea6121a | 4091 | s->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
4092 | |
4093 | return TRUE; | |
4094 | } | |
4095 | ||
4096 | /* If this is a weak symbol, and there is a real definition, the | |
4097 | processor independent code will have arranged for us to see the | |
4098 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4099 | if (h->u.weakdef != NULL) |
03a12831 | 4100 | { |
f6e332e6 AM |
4101 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4102 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4103 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4104 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
03a12831 AO |
4105 | return TRUE; |
4106 | } | |
4107 | ||
4108 | /* This is a reference to a symbol defined by a dynamic object which | |
4109 | is not a function. */ | |
4110 | ||
4111 | /* If we are creating a shared library, we must presume that the | |
4112 | only references to the symbol are via the global offset table. | |
4113 | For such cases we need not do anything here; the relocations will | |
4114 | be handled correctly by relocate_section. */ | |
4115 | if (info->shared) | |
4116 | return TRUE; | |
4117 | ||
4118 | /* If there are no references to this symbol that do not use the | |
4119 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 4120 | if (!h->non_got_ref) |
03a12831 AO |
4121 | return TRUE; |
4122 | ||
4123 | /* We must allocate the symbol in our .dynbss section, which will | |
4124 | become part of the .bss section of the executable. There will be | |
4125 | an entry for this symbol in the .dynsym section. The dynamic | |
4126 | object will contain position independent code, so all references | |
4127 | from the dynamic object to this symbol will go through the global | |
4128 | offset table. The dynamic linker will use the .dynsym entry to | |
4129 | determine the address it must put in the global offset table, so | |
4130 | both the dynamic object and the regular object will refer to the | |
4131 | same memory location for the variable. */ | |
4132 | ||
4133 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
4134 | BFD_ASSERT (s != NULL); | |
4135 | ||
4136 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
4137 | copy the initial value out of the dynamic object and into the | |
4138 | runtime process image. We need to remember the offset into the | |
4139 | .rela.bss section we are going to use. */ | |
4140 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4141 | { | |
4142 | asection * srel; | |
4143 | ||
4144 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
4145 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4146 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 4147 | h->needs_copy = 1; |
03a12831 AO |
4148 | } |
4149 | ||
4150 | /* We need to figure out the alignment required for this symbol. I | |
4151 | have no idea how ELF linkers handle this. */ | |
4152 | power_of_two = bfd_log2 (h->size); | |
4153 | if (power_of_two > 3) | |
4154 | power_of_two = 3; | |
4155 | ||
4156 | /* Apply the required alignment. */ | |
eea6121a | 4157 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
03a12831 AO |
4158 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
4159 | { | |
4160 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
4161 | return FALSE; | |
4162 | } | |
4163 | ||
4164 | /* Define the symbol as being at this point in the section. */ | |
4165 | h->root.u.def.section = s; | |
eea6121a | 4166 | h->root.u.def.value = s->size; |
03a12831 AO |
4167 | |
4168 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 4169 | s->size += h->size; |
03a12831 AO |
4170 | |
4171 | return TRUE; | |
4172 | } | |
4173 | ||
03a12831 AO |
4174 | /* Set the sizes of the dynamic sections. */ |
4175 | ||
4176 | static bfd_boolean | |
4177 | _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info) | |
4178 | bfd * output_bfd; | |
4179 | struct bfd_link_info * info; | |
4180 | { | |
4181 | bfd * dynobj; | |
4182 | asection * s; | |
4183 | bfd_boolean plt; | |
4184 | bfd_boolean relocs; | |
4185 | bfd_boolean reltext; | |
4186 | ||
4187 | dynobj = elf_hash_table (info)->dynobj; | |
4188 | BFD_ASSERT (dynobj != NULL); | |
4189 | ||
4190 | if (elf_hash_table (info)->dynamic_sections_created) | |
4191 | { | |
4192 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 4193 | if (info->executable) |
03a12831 AO |
4194 | { |
4195 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4196 | BFD_ASSERT (s != NULL); | |
eea6121a | 4197 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
03a12831 AO |
4198 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4199 | } | |
4200 | } | |
4201 | else | |
4202 | { | |
4203 | /* We may have created entries in the .rela.got section. | |
4204 | However, if we are not creating the dynamic sections, we will | |
4205 | not actually use these entries. Reset the size of .rela.got, | |
4206 | which will cause it to get stripped from the output file | |
4207 | below. */ | |
4208 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4209 | if (s != NULL) | |
eea6121a | 4210 | s->size = 0; |
03a12831 AO |
4211 | } |
4212 | ||
03a12831 AO |
4213 | /* The check_relocs and adjust_dynamic_symbol entry points have |
4214 | determined the sizes of the various dynamic sections. Allocate | |
4215 | memory for them. */ | |
4216 | plt = FALSE; | |
4217 | relocs = FALSE; | |
4218 | reltext = FALSE; | |
4219 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4220 | { | |
4221 | const char * name; | |
4222 | bfd_boolean strip; | |
4223 | ||
4224 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4225 | continue; | |
4226 | ||
4227 | /* It's OK to base decisions on the section name, because none | |
4228 | of the dynobj section names depend upon the input files. */ | |
4229 | name = bfd_get_section_name (dynobj, s); | |
4230 | ||
4231 | strip = FALSE; | |
4232 | ||
4233 | if (strcmp (name, ".plt") == 0) | |
4234 | { | |
eea6121a | 4235 | if (s->size == 0) |
03a12831 AO |
4236 | /* Strip this section if we don't need it; see the |
4237 | comment below. */ | |
4238 | strip = TRUE; | |
4239 | else | |
4240 | /* Remember whether there is a PLT. */ | |
4241 | plt = TRUE; | |
4242 | } | |
4243 | else if (strncmp (name, ".rela", 5) == 0) | |
4244 | { | |
eea6121a | 4245 | if (s->size == 0) |
03a12831 AO |
4246 | { |
4247 | /* If we don't need this section, strip it from the | |
4248 | output file. This is mostly to handle .rela.bss and | |
4249 | .rela.plt. We must create both sections in | |
4250 | create_dynamic_sections, because they must be created | |
4251 | before the linker maps input sections to output | |
4252 | sections. The linker does that before | |
4253 | adjust_dynamic_symbol is called, and it is that | |
4254 | function which decides whether anything needs to go | |
4255 | into these sections. */ | |
4256 | strip = TRUE; | |
4257 | } | |
4258 | else | |
4259 | { | |
4260 | asection * target; | |
4261 | ||
4262 | /* Remember whether there are any reloc sections other | |
4263 | than .rela.plt. */ | |
4264 | if (strcmp (name, ".rela.plt") != 0) | |
4265 | { | |
4266 | const char * outname; | |
4267 | ||
4268 | relocs = TRUE; | |
4269 | ||
4270 | /* If this relocation section applies to a read only | |
4271 | section, then we probably need a DT_TEXTREL | |
4272 | entry. The entries in the .rela.plt section | |
4273 | really apply to the .got section, which we | |
4274 | created ourselves and so know is not readonly. */ | |
4275 | outname = bfd_get_section_name (output_bfd, | |
4276 | s->output_section); | |
4277 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
4278 | if (target != NULL | |
4279 | && (target->flags & SEC_READONLY) != 0 | |
4280 | && (target->flags & SEC_ALLOC) != 0) | |
4281 | reltext = TRUE; | |
4282 | } | |
4283 | ||
4284 | /* We use the reloc_count field as a counter if we need | |
4285 | to copy relocs into the output file. */ | |
4286 | s->reloc_count = 0; | |
4287 | } | |
4288 | } | |
4289 | else if (strncmp (name, ".got", 4) != 0) | |
4290 | /* It's not one of our sections, so don't allocate space. */ | |
4291 | continue; | |
4292 | ||
4293 | if (strip) | |
4294 | { | |
4295 | _bfd_strip_section_from_output (info, s); | |
4296 | continue; | |
4297 | } | |
4298 | ||
4299 | /* Allocate memory for the section contents. We use bfd_zalloc | |
4300 | here in case unused entries are not reclaimed before the | |
4301 | section's contents are written out. This should not happen, | |
4302 | but this way if it does, we get a R_MN10300_NONE reloc | |
4303 | instead of garbage. */ | |
eea6121a AM |
4304 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
4305 | if (s->contents == NULL && s->size != 0) | |
03a12831 AO |
4306 | return FALSE; |
4307 | } | |
4308 | ||
4309 | if (elf_hash_table (info)->dynamic_sections_created) | |
4310 | { | |
4311 | /* Add some entries to the .dynamic section. We fill in the | |
4312 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
4313 | but we must add the entries now so that we get the correct | |
4314 | size for the .dynamic section. The DT_DEBUG entry is filled | |
4315 | in by the dynamic linker and used by the debugger. */ | |
4316 | if (! info->shared) | |
4317 | { | |
5a580b3a | 4318 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) |
03a12831 AO |
4319 | return FALSE; |
4320 | } | |
4321 | ||
4322 | if (plt) | |
4323 | { | |
5a580b3a AM |
4324 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
4325 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4326 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
4327 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
03a12831 AO |
4328 | return FALSE; |
4329 | } | |
4330 | ||
4331 | if (relocs) | |
4332 | { | |
5a580b3a AM |
4333 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
4334 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
4335 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
4336 | sizeof (Elf32_External_Rela))) | |
03a12831 AO |
4337 | return FALSE; |
4338 | } | |
4339 | ||
4340 | if (reltext) | |
4341 | { | |
5a580b3a | 4342 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
03a12831 AO |
4343 | return FALSE; |
4344 | } | |
4345 | } | |
4346 | ||
4347 | return TRUE; | |
4348 | } | |
4349 | ||
4350 | /* Finish up dynamic symbol handling. We set the contents of various | |
4351 | dynamic sections here. */ | |
4352 | ||
4353 | static bfd_boolean | |
4354 | _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4355 | bfd * output_bfd; | |
4356 | struct bfd_link_info * info; | |
4357 | struct elf_link_hash_entry * h; | |
4358 | Elf_Internal_Sym * sym; | |
4359 | { | |
4360 | bfd * dynobj; | |
4361 | ||
4362 | dynobj = elf_hash_table (info)->dynobj; | |
4363 | ||
4364 | if (h->plt.offset != (bfd_vma) -1) | |
4365 | { | |
4366 | asection * splt; | |
4367 | asection * sgot; | |
4368 | asection * srel; | |
4369 | bfd_vma plt_index; | |
4370 | bfd_vma got_offset; | |
4371 | Elf_Internal_Rela rel; | |
4372 | ||
4373 | /* This symbol has an entry in the procedure linkage table. Set | |
4374 | it up. */ | |
4375 | ||
4376 | BFD_ASSERT (h->dynindx != -1); | |
4377 | ||
4378 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4379 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4380 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4381 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4382 | ||
4383 | /* Get the index in the procedure linkage table which | |
4384 | corresponds to this symbol. This is the index of this symbol | |
4385 | in all the symbols for which we are making plt entries. The | |
4386 | first entry in the procedure linkage table is reserved. */ | |
4387 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
4388 | / elf_mn10300_sizeof_plt (info)); | |
4389 | ||
4390 | /* Get the offset into the .got table of the entry that | |
4391 | corresponds to this function. Each .got entry is 4 bytes. | |
4392 | The first three are reserved. */ | |
4393 | got_offset = (plt_index + 3) * 4; | |
4394 | ||
4395 | /* Fill in the entry in the procedure linkage table. */ | |
4396 | if (! info->shared) | |
4397 | { | |
4398 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
4399 | elf_mn10300_sizeof_plt (info)); | |
4400 | bfd_put_32 (output_bfd, | |
4401 | (sgot->output_section->vma | |
4402 | + sgot->output_offset | |
4403 | + got_offset), | |
4404 | (splt->contents + h->plt.offset | |
4405 | + elf_mn10300_plt_symbol_offset (info))); | |
4406 | ||
4407 | bfd_put_32 (output_bfd, | |
4408 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
4409 | (splt->contents + h->plt.offset | |
4410 | + elf_mn10300_plt_plt0_offset (info))); | |
4411 | } | |
4412 | else | |
4413 | { | |
4414 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
4415 | elf_mn10300_sizeof_plt (info)); | |
4416 | ||
4417 | bfd_put_32 (output_bfd, got_offset, | |
4418 | (splt->contents + h->plt.offset | |
4419 | + elf_mn10300_plt_symbol_offset (info))); | |
4420 | } | |
4421 | ||
4422 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4423 | (splt->contents + h->plt.offset | |
4424 | + elf_mn10300_plt_reloc_offset (info))); | |
4425 | ||
4426 | /* Fill in the entry in the global offset table. */ | |
4427 | bfd_put_32 (output_bfd, | |
4428 | (splt->output_section->vma | |
4429 | + splt->output_offset | |
4430 | + h->plt.offset | |
4431 | + elf_mn10300_plt_temp_offset (info)), | |
4432 | sgot->contents + got_offset); | |
4433 | ||
4434 | /* Fill in the entry in the .rela.plt section. */ | |
4435 | rel.r_offset = (sgot->output_section->vma | |
4436 | + sgot->output_offset | |
4437 | + got_offset); | |
4438 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
4439 | rel.r_addend = 0; | |
4440 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4441 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4442 | + plt_index)); | |
03a12831 | 4443 | |
f5385ebf | 4444 | if (!h->def_regular) |
03a12831 AO |
4445 | /* Mark the symbol as undefined, rather than as defined in |
4446 | the .plt section. Leave the value alone. */ | |
4447 | sym->st_shndx = SHN_UNDEF; | |
4448 | } | |
4449 | ||
4450 | if (h->got.offset != (bfd_vma) -1) | |
4451 | { | |
4452 | asection * sgot; | |
4453 | asection * srel; | |
4454 | Elf_Internal_Rela rel; | |
4455 | ||
4456 | /* This symbol has an entry in the global offset table. Set it up. */ | |
4457 | ||
4458 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4459 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4460 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4461 | ||
4462 | rel.r_offset = (sgot->output_section->vma | |
4463 | + sgot->output_offset | |
4464 | + (h->got.offset &~ 1)); | |
4465 | ||
4466 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4467 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4468 | the symbol was forced to be local because of a version file. | |
4469 | The entry in the global offset table will already have been | |
4470 | initialized in the relocate_section function. */ | |
4471 | if (info->shared | |
4472 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 4473 | && h->def_regular) |
03a12831 AO |
4474 | { |
4475 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
4476 | rel.r_addend = (h->root.u.def.value | |
4477 | + h->root.u.def.section->output_section->vma | |
4478 | + h->root.u.def.section->output_offset); | |
4479 | } | |
4480 | else | |
4481 | { | |
4482 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4483 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
4484 | rel.r_addend = 0; | |
4485 | } | |
4486 | ||
4487 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4488 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4489 | + srel->reloc_count)); | |
03a12831 AO |
4490 | ++ srel->reloc_count; |
4491 | } | |
4492 | ||
f5385ebf | 4493 | if (h->needs_copy) |
03a12831 AO |
4494 | { |
4495 | asection * s; | |
4496 | Elf_Internal_Rela rel; | |
4497 | ||
4498 | /* This symbol needs a copy reloc. Set it up. */ | |
4499 | BFD_ASSERT (h->dynindx != -1 | |
4500 | && (h->root.type == bfd_link_hash_defined | |
4501 | || h->root.type == bfd_link_hash_defweak)); | |
4502 | ||
4503 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4504 | ".rela.bss"); | |
4505 | BFD_ASSERT (s != NULL); | |
4506 | ||
4507 | rel.r_offset = (h->root.u.def.value | |
4508 | + h->root.u.def.section->output_section->vma | |
4509 | + h->root.u.def.section->output_offset); | |
4510 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
4511 | rel.r_addend = 0; | |
4512 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4513 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
4514 | + s->reloc_count)); | |
03a12831 AO |
4515 | ++ s->reloc_count; |
4516 | } | |
4517 | ||
4518 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
4519 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4520 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
4521 | sym->st_shndx = SHN_ABS; | |
4522 | ||
4523 | return TRUE; | |
4524 | } | |
4525 | ||
4526 | /* Finish up the dynamic sections. */ | |
4527 | ||
4528 | static bfd_boolean | |
4529 | _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info) | |
4530 | bfd * output_bfd; | |
4531 | struct bfd_link_info * info; | |
4532 | { | |
4533 | bfd * dynobj; | |
4534 | asection * sgot; | |
4535 | asection * sdyn; | |
4536 | ||
4537 | dynobj = elf_hash_table (info)->dynobj; | |
4538 | ||
4539 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4540 | BFD_ASSERT (sgot != NULL); | |
4541 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4542 | ||
4543 | if (elf_hash_table (info)->dynamic_sections_created) | |
4544 | { | |
4545 | asection * splt; | |
4546 | Elf32_External_Dyn * dyncon; | |
4547 | Elf32_External_Dyn * dynconend; | |
4548 | ||
4549 | BFD_ASSERT (sdyn != NULL); | |
4550 | ||
4551 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4552 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
03a12831 AO |
4553 | |
4554 | for (; dyncon < dynconend; dyncon++) | |
4555 | { | |
4556 | Elf_Internal_Dyn dyn; | |
4557 | const char * name; | |
4558 | asection * s; | |
4559 | ||
4560 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4561 | ||
4562 | switch (dyn.d_tag) | |
4563 | { | |
4564 | default: | |
4565 | break; | |
4566 | ||
4567 | case DT_PLTGOT: | |
4568 | name = ".got"; | |
4569 | goto get_vma; | |
4570 | ||
4571 | case DT_JMPREL: | |
4572 | name = ".rela.plt"; | |
4573 | get_vma: | |
4574 | s = bfd_get_section_by_name (output_bfd, name); | |
4575 | BFD_ASSERT (s != NULL); | |
4576 | dyn.d_un.d_ptr = s->vma; | |
4577 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4578 | break; | |
4579 | ||
4580 | case DT_PLTRELSZ: | |
4581 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4582 | BFD_ASSERT (s != NULL); | |
eea6121a | 4583 | dyn.d_un.d_val = s->size; |
03a12831 AO |
4584 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4585 | break; | |
4586 | ||
4587 | case DT_RELASZ: | |
4588 | /* My reading of the SVR4 ABI indicates that the | |
4589 | procedure linkage table relocs (DT_JMPREL) should be | |
4590 | included in the overall relocs (DT_RELA). This is | |
4591 | what Solaris does. However, UnixWare can not handle | |
4592 | that case. Therefore, we override the DT_RELASZ entry | |
4593 | here to make it not include the JMPREL relocs. Since | |
4594 | the linker script arranges for .rela.plt to follow all | |
4595 | other relocation sections, we don't have to worry | |
4596 | about changing the DT_RELA entry. */ | |
4597 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4598 | if (s != NULL) | |
eea6121a | 4599 | dyn.d_un.d_val -= s->size; |
03a12831 AO |
4600 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4601 | break; | |
4602 | } | |
4603 | } | |
4604 | ||
4605 | /* Fill in the first entry in the procedure linkage table. */ | |
4606 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
eea6121a | 4607 | if (splt && splt->size > 0) |
03a12831 AO |
4608 | { |
4609 | if (info->shared) | |
4610 | { | |
4611 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
4612 | elf_mn10300_sizeof_plt (info)); | |
4613 | } | |
4614 | else | |
4615 | { | |
4616 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
4617 | bfd_put_32 (output_bfd, | |
4618 | sgot->output_section->vma + sgot->output_offset + 4, | |
4619 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
4620 | bfd_put_32 (output_bfd, | |
4621 | sgot->output_section->vma + sgot->output_offset + 8, | |
4622 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
4623 | } | |
4624 | ||
4625 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4626 | really seem like the right value. */ | |
4627 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4628 | } | |
4629 | } | |
4630 | ||
4631 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4632 | if (sgot->size > 0) |
03a12831 AO |
4633 | { |
4634 | if (sdyn == NULL) | |
4635 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4636 | else | |
4637 | bfd_put_32 (output_bfd, | |
4638 | sdyn->output_section->vma + sdyn->output_offset, | |
4639 | sgot->contents); | |
4640 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4641 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4642 | } | |
4643 | ||
4644 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4645 | ||
4646 | return TRUE; | |
4647 | } | |
4648 | ||
a873f25a AO |
4649 | /* Classify relocation types, such that combreloc can sort them |
4650 | properly. */ | |
4651 | ||
4652 | static enum elf_reloc_type_class | |
4653 | _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
4654 | { | |
4655 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
4656 | { | |
4657 | case R_MN10300_RELATIVE: | |
4658 | return reloc_class_relative; | |
4659 | case R_MN10300_JMP_SLOT: | |
4660 | return reloc_class_plt; | |
4661 | case R_MN10300_COPY: | |
4662 | return reloc_class_copy; | |
4663 | default: | |
4664 | return reloc_class_normal; | |
4665 | } | |
4666 | } | |
4667 | ||
73c3cd1c | 4668 | #ifndef ELF_ARCH |
252b5132 RH |
4669 | #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
4670 | #define TARGET_LITTLE_NAME "elf32-mn10300" | |
4671 | #define ELF_ARCH bfd_arch_mn10300 | |
6f4514dc AO |
4672 | #define ELF_MACHINE_CODE EM_MN10300 |
4673 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 4674 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 4675 | #endif |
252b5132 RH |
4676 | |
4677 | #define elf_info_to_howto mn10300_info_to_howto | |
4678 | #define elf_info_to_howto_rel 0 | |
4679 | #define elf_backend_can_gc_sections 1 | |
b491616a | 4680 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4681 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
4682 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
4683 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
4684 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
4685 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4686 | mn10300_elf_get_relocated_section_contents | |
4687 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4688 | elf32_mn10300_link_hash_table_create | |
e2d34d7d DJ |
4689 | #define bfd_elf32_bfd_link_hash_table_free \ |
4690 | elf32_mn10300_link_hash_table_free | |
252b5132 | 4691 | |
73c3cd1c | 4692 | #ifndef elf_symbol_leading_char |
252b5132 | 4693 | #define elf_symbol_leading_char '_' |
73c3cd1c | 4694 | #endif |
252b5132 RH |
4695 | |
4696 | /* So we can set bits in e_flags. */ | |
4697 | #define elf_backend_final_write_processing \ | |
4698 | _bfd_mn10300_elf_final_write_processing | |
4699 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
4700 | ||
4701 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
4702 | _bfd_mn10300_elf_merge_private_bfd_data | |
4703 | ||
03a12831 AO |
4704 | #define elf_backend_can_gc_sections 1 |
4705 | #define elf_backend_create_dynamic_sections \ | |
4706 | _bfd_mn10300_elf_create_dynamic_sections | |
4707 | #define elf_backend_adjust_dynamic_symbol \ | |
4708 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
4709 | #define elf_backend_size_dynamic_sections \ | |
4710 | _bfd_mn10300_elf_size_dynamic_sections | |
4711 | #define elf_backend_finish_dynamic_symbol \ | |
4712 | _bfd_mn10300_elf_finish_dynamic_symbol | |
4713 | #define elf_backend_finish_dynamic_sections \ | |
4714 | _bfd_mn10300_elf_finish_dynamic_sections | |
4715 | ||
a873f25a AO |
4716 | #define elf_backend_reloc_type_class \ |
4717 | _bfd_mn10300_elf_reloc_type_class | |
4718 | ||
03a12831 AO |
4719 | #define elf_backend_want_got_plt 1 |
4720 | #define elf_backend_plt_readonly 1 | |
4721 | #define elf_backend_want_plt_sym 0 | |
4722 | #define elf_backend_got_header_size 12 | |
03a12831 | 4723 | |
252b5132 | 4724 | #include "elf32-target.h" |