Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Matsushita 10300 specific support for 32-bit ELF |
66eb6687 AM |
2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
3 | 2006 Free Software Foundation, Inc. | |
252b5132 | 4 | |
0112cd26 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
0112cd26 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
252b5132 | 11 | |
0112cd26 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
0112cd26 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
252b5132 RH |
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; | |
eb13e63f DD |
88 | |
89 | /* Calculated value. */ | |
90 | bfd_vma value; | |
252b5132 RH |
91 | }; |
92 | ||
93 | /* We derive a hash table from the main elf linker hash table so | |
94 | we can store state variables and a secondary hash table without | |
95 | resorting to global variables. */ | |
010ac81f | 96 | struct elf32_mn10300_link_hash_table { |
252b5132 RH |
97 | /* The main hash table. */ |
98 | struct elf_link_hash_table root; | |
99 | ||
100 | /* A hash table for static functions. We could derive a new hash table | |
101 | instead of using the full elf32_mn10300_link_hash_table if we wanted | |
102 | to save some memory. */ | |
103 | struct elf32_mn10300_link_hash_table *static_hash_table; | |
104 | ||
105 | /* Random linker state flags. */ | |
106 | #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 | |
107 | char flags; | |
108 | }; | |
109 | ||
110 | /* For MN10300 linker hash table. */ | |
111 | ||
112 | /* Get the MN10300 ELF linker hash table from a link_info structure. */ | |
113 | ||
114 | #define elf32_mn10300_hash_table(p) \ | |
115 | ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) | |
116 | ||
117 | #define elf32_mn10300_link_hash_traverse(table, func, info) \ | |
118 | (elf_link_hash_traverse \ | |
119 | (&(table)->root, \ | |
b34976b6 | 120 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
252b5132 RH |
121 | (info))) |
122 | ||
123 | static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc | |
124 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
125 | static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create | |
126 | PARAMS ((bfd *)); | |
e2d34d7d DJ |
127 | static void elf32_mn10300_link_hash_table_free |
128 | PARAMS ((struct bfd_link_hash_table *)); | |
252b5132 RH |
129 | |
130 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
131 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
132 | static void mn10300_info_to_howto | |
947216bf | 133 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 | 134 | static bfd_boolean mn10300_elf_check_relocs |
252b5132 RH |
135 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
136 | const Elf_Internal_Rela *)); | |
137 | static asection *mn10300_elf_gc_mark_hook | |
1e2f5b6e | 138 | PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *, |
252b5132 | 139 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 140 | static bfd_boolean mn10300_elf_relax_delete_bytes |
252b5132 | 141 | PARAMS ((bfd *, asection *, bfd_vma, int)); |
b34976b6 AM |
142 | static bfd_boolean mn10300_elf_symbol_address_p |
143 | PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma)); | |
144 | static bfd_boolean elf32_mn10300_finish_hash_table_entry | |
252b5132 RH |
145 | PARAMS ((struct bfd_hash_entry *, PTR)); |
146 | static void compute_function_info | |
147 | PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *, | |
148 | bfd_vma, unsigned char *)); | |
149 | ||
03a12831 AO |
150 | static bfd_boolean _bfd_mn10300_elf_create_got_section |
151 | PARAMS ((bfd *, struct bfd_link_info *)); | |
152 | static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections | |
153 | PARAMS ((bfd *, struct bfd_link_info *)); | |
154 | static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol | |
155 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
03a12831 AO |
156 | static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections |
157 | PARAMS ((bfd *, struct bfd_link_info *)); | |
158 | static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol | |
159 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
160 | Elf_Internal_Sym *)); | |
161 | static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections | |
162 | PARAMS ((bfd *, struct bfd_link_info *)); | |
163 | ||
010ac81f | 164 | static reloc_howto_type elf_mn10300_howto_table[] = { |
252b5132 RH |
165 | /* Dummy relocation. Does nothing. */ |
166 | HOWTO (R_MN10300_NONE, | |
167 | 0, | |
168 | 2, | |
169 | 16, | |
b34976b6 | 170 | FALSE, |
252b5132 RH |
171 | 0, |
172 | complain_overflow_bitfield, | |
173 | bfd_elf_generic_reloc, | |
174 | "R_MN10300_NONE", | |
b34976b6 | 175 | FALSE, |
252b5132 RH |
176 | 0, |
177 | 0, | |
b34976b6 | 178 | FALSE), |
252b5132 RH |
179 | /* Standard 32 bit reloc. */ |
180 | HOWTO (R_MN10300_32, | |
181 | 0, | |
182 | 2, | |
183 | 32, | |
b34976b6 | 184 | FALSE, |
252b5132 RH |
185 | 0, |
186 | complain_overflow_bitfield, | |
187 | bfd_elf_generic_reloc, | |
188 | "R_MN10300_32", | |
b34976b6 | 189 | FALSE, |
252b5132 RH |
190 | 0xffffffff, |
191 | 0xffffffff, | |
b34976b6 | 192 | FALSE), |
252b5132 RH |
193 | /* Standard 16 bit reloc. */ |
194 | HOWTO (R_MN10300_16, | |
195 | 0, | |
196 | 1, | |
197 | 16, | |
b34976b6 | 198 | FALSE, |
252b5132 RH |
199 | 0, |
200 | complain_overflow_bitfield, | |
201 | bfd_elf_generic_reloc, | |
202 | "R_MN10300_16", | |
b34976b6 | 203 | FALSE, |
252b5132 RH |
204 | 0xffff, |
205 | 0xffff, | |
b34976b6 | 206 | FALSE), |
252b5132 RH |
207 | /* Standard 8 bit reloc. */ |
208 | HOWTO (R_MN10300_8, | |
209 | 0, | |
210 | 0, | |
211 | 8, | |
b34976b6 | 212 | FALSE, |
252b5132 RH |
213 | 0, |
214 | complain_overflow_bitfield, | |
215 | bfd_elf_generic_reloc, | |
216 | "R_MN10300_8", | |
b34976b6 | 217 | FALSE, |
252b5132 RH |
218 | 0xff, |
219 | 0xff, | |
b34976b6 | 220 | FALSE), |
252b5132 RH |
221 | /* Standard 32bit pc-relative reloc. */ |
222 | HOWTO (R_MN10300_PCREL32, | |
223 | 0, | |
224 | 2, | |
225 | 32, | |
b34976b6 | 226 | TRUE, |
252b5132 RH |
227 | 0, |
228 | complain_overflow_bitfield, | |
229 | bfd_elf_generic_reloc, | |
230 | "R_MN10300_PCREL32", | |
b34976b6 | 231 | FALSE, |
252b5132 RH |
232 | 0xffffffff, |
233 | 0xffffffff, | |
b34976b6 | 234 | TRUE), |
252b5132 RH |
235 | /* Standard 16bit pc-relative reloc. */ |
236 | HOWTO (R_MN10300_PCREL16, | |
237 | 0, | |
238 | 1, | |
239 | 16, | |
b34976b6 | 240 | TRUE, |
252b5132 RH |
241 | 0, |
242 | complain_overflow_bitfield, | |
243 | bfd_elf_generic_reloc, | |
244 | "R_MN10300_PCREL16", | |
b34976b6 | 245 | FALSE, |
252b5132 RH |
246 | 0xffff, |
247 | 0xffff, | |
b34976b6 | 248 | TRUE), |
252b5132 RH |
249 | /* Standard 8 pc-relative reloc. */ |
250 | HOWTO (R_MN10300_PCREL8, | |
251 | 0, | |
252 | 0, | |
253 | 8, | |
b34976b6 | 254 | TRUE, |
252b5132 RH |
255 | 0, |
256 | complain_overflow_bitfield, | |
257 | bfd_elf_generic_reloc, | |
258 | "R_MN10300_PCREL8", | |
b34976b6 | 259 | FALSE, |
252b5132 RH |
260 | 0xff, |
261 | 0xff, | |
b34976b6 | 262 | TRUE), |
252b5132 RH |
263 | |
264 | /* GNU extension to record C++ vtable hierarchy */ | |
265 | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ | |
266 | 0, /* rightshift */ | |
267 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 0, /* bitsize */ | |
b34976b6 | 269 | FALSE, /* pc_relative */ |
252b5132 RH |
270 | 0, /* bitpos */ |
271 | complain_overflow_dont, /* complain_on_overflow */ | |
272 | NULL, /* special_function */ | |
273 | "R_MN10300_GNU_VTINHERIT", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
252b5132 RH |
275 | 0, /* src_mask */ |
276 | 0, /* dst_mask */ | |
b34976b6 | 277 | FALSE), /* pcrel_offset */ |
252b5132 RH |
278 | |
279 | /* GNU extension to record C++ vtable member usage */ | |
280 | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ | |
281 | 0, /* rightshift */ | |
282 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 0, /* bitsize */ | |
b34976b6 | 284 | FALSE, /* pc_relative */ |
252b5132 RH |
285 | 0, /* bitpos */ |
286 | complain_overflow_dont, /* complain_on_overflow */ | |
287 | NULL, /* special_function */ | |
288 | "R_MN10300_GNU_VTENTRY", /* name */ | |
b34976b6 | 289 | FALSE, /* partial_inplace */ |
252b5132 RH |
290 | 0, /* src_mask */ |
291 | 0, /* dst_mask */ | |
b34976b6 | 292 | FALSE), /* pcrel_offset */ |
252b5132 RH |
293 | |
294 | /* Standard 24 bit reloc. */ | |
295 | HOWTO (R_MN10300_24, | |
296 | 0, | |
297 | 2, | |
298 | 24, | |
b34976b6 | 299 | FALSE, |
252b5132 RH |
300 | 0, |
301 | complain_overflow_bitfield, | |
302 | bfd_elf_generic_reloc, | |
303 | "R_MN10300_24", | |
b34976b6 | 304 | FALSE, |
252b5132 RH |
305 | 0xffffff, |
306 | 0xffffff, | |
b34976b6 | 307 | FALSE), |
03a12831 AO |
308 | HOWTO (R_MN10300_GOTPC32, /* type */ |
309 | 0, /* rightshift */ | |
310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 32, /* bitsize */ | |
312 | TRUE, /* pc_relative */ | |
313 | 0, /* bitpos */ | |
314 | complain_overflow_bitfield, /* complain_on_overflow */ | |
315 | bfd_elf_generic_reloc, /* */ | |
316 | "R_MN10300_GOTPC32", /* name */ | |
317 | FALSE, /* partial_inplace */ | |
318 | 0xffffffff, /* src_mask */ | |
319 | 0xffffffff, /* dst_mask */ | |
320 | TRUE), /* pcrel_offset */ | |
321 | ||
322 | HOWTO (R_MN10300_GOTPC16, /* type */ | |
323 | 0, /* rightshift */ | |
324 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 16, /* bitsize */ | |
326 | TRUE, /* pc_relative */ | |
327 | 0, /* bitpos */ | |
328 | complain_overflow_bitfield, /* complain_on_overflow */ | |
329 | bfd_elf_generic_reloc, /* */ | |
330 | "R_MN10300_GOTPC16", /* name */ | |
331 | FALSE, /* partial_inplace */ | |
332 | 0xffff, /* src_mask */ | |
333 | 0xffff, /* dst_mask */ | |
334 | TRUE), /* pcrel_offset */ | |
335 | ||
336 | HOWTO (R_MN10300_GOTOFF32, /* type */ | |
337 | 0, /* rightshift */ | |
338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
339 | 32, /* bitsize */ | |
340 | FALSE, /* pc_relative */ | |
341 | 0, /* bitpos */ | |
342 | complain_overflow_bitfield, /* complain_on_overflow */ | |
343 | bfd_elf_generic_reloc, /* */ | |
344 | "R_MN10300_GOTOFF32", /* name */ | |
345 | FALSE, /* partial_inplace */ | |
346 | 0xffffffff, /* src_mask */ | |
347 | 0xffffffff, /* dst_mask */ | |
348 | FALSE), /* pcrel_offset */ | |
349 | ||
350 | HOWTO (R_MN10300_GOTOFF24, /* type */ | |
351 | 0, /* rightshift */ | |
352 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
353 | 24, /* bitsize */ | |
354 | FALSE, /* pc_relative */ | |
355 | 0, /* bitpos */ | |
356 | complain_overflow_bitfield, /* complain_on_overflow */ | |
357 | bfd_elf_generic_reloc, /* */ | |
358 | "R_MN10300_GOTOFF24", /* name */ | |
359 | FALSE, /* partial_inplace */ | |
360 | 0xffffff, /* src_mask */ | |
361 | 0xffffff, /* dst_mask */ | |
362 | FALSE), /* pcrel_offset */ | |
363 | ||
364 | HOWTO (R_MN10300_GOTOFF16, /* type */ | |
365 | 0, /* rightshift */ | |
366 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
367 | 16, /* bitsize */ | |
368 | FALSE, /* pc_relative */ | |
369 | 0, /* bitpos */ | |
370 | complain_overflow_bitfield, /* complain_on_overflow */ | |
371 | bfd_elf_generic_reloc, /* */ | |
372 | "R_MN10300_GOTOFF16", /* name */ | |
373 | FALSE, /* partial_inplace */ | |
374 | 0xffff, /* src_mask */ | |
375 | 0xffff, /* dst_mask */ | |
376 | FALSE), /* pcrel_offset */ | |
377 | ||
378 | HOWTO (R_MN10300_PLT32, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 32, /* bitsize */ | |
382 | TRUE, /* pc_relative */ | |
383 | 0, /* bitpos */ | |
384 | complain_overflow_bitfield, /* complain_on_overflow */ | |
385 | bfd_elf_generic_reloc, /* */ | |
386 | "R_MN10300_PLT32", /* name */ | |
387 | FALSE, /* partial_inplace */ | |
388 | 0xffffffff, /* src_mask */ | |
389 | 0xffffffff, /* dst_mask */ | |
390 | TRUE), /* pcrel_offset */ | |
391 | ||
392 | HOWTO (R_MN10300_PLT16, /* type */ | |
393 | 0, /* rightshift */ | |
394 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
395 | 16, /* bitsize */ | |
396 | TRUE, /* pc_relative */ | |
397 | 0, /* bitpos */ | |
398 | complain_overflow_bitfield, /* complain_on_overflow */ | |
399 | bfd_elf_generic_reloc, /* */ | |
400 | "R_MN10300_PLT16", /* name */ | |
401 | FALSE, /* partial_inplace */ | |
402 | 0xffff, /* src_mask */ | |
403 | 0xffff, /* dst_mask */ | |
404 | TRUE), /* pcrel_offset */ | |
405 | ||
406 | HOWTO (R_MN10300_GOT32, /* type */ | |
407 | 0, /* rightshift */ | |
408 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
409 | 32, /* bitsize */ | |
410 | FALSE, /* pc_relative */ | |
411 | 0, /* bitpos */ | |
412 | complain_overflow_bitfield, /* complain_on_overflow */ | |
413 | bfd_elf_generic_reloc, /* */ | |
414 | "R_MN10300_GOT32", /* name */ | |
415 | FALSE, /* partial_inplace */ | |
416 | 0xffffffff, /* src_mask */ | |
417 | 0xffffffff, /* dst_mask */ | |
418 | FALSE), /* pcrel_offset */ | |
419 | ||
420 | HOWTO (R_MN10300_GOT24, /* type */ | |
421 | 0, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 24, /* bitsize */ | |
424 | FALSE, /* pc_relative */ | |
425 | 0, /* bitpos */ | |
426 | complain_overflow_bitfield, /* complain_on_overflow */ | |
427 | bfd_elf_generic_reloc, /* */ | |
428 | "R_MN10300_GOT24", /* name */ | |
429 | FALSE, /* partial_inplace */ | |
430 | 0xffffffff, /* src_mask */ | |
431 | 0xffffffff, /* dst_mask */ | |
432 | FALSE), /* pcrel_offset */ | |
433 | ||
434 | HOWTO (R_MN10300_GOT16, /* type */ | |
435 | 0, /* rightshift */ | |
436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
437 | 16, /* bitsize */ | |
438 | FALSE, /* pc_relative */ | |
439 | 0, /* bitpos */ | |
440 | complain_overflow_bitfield, /* complain_on_overflow */ | |
441 | bfd_elf_generic_reloc, /* */ | |
442 | "R_MN10300_GOT16", /* name */ | |
443 | FALSE, /* partial_inplace */ | |
444 | 0xffffffff, /* src_mask */ | |
445 | 0xffffffff, /* dst_mask */ | |
446 | FALSE), /* pcrel_offset */ | |
447 | ||
448 | HOWTO (R_MN10300_COPY, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 32, /* bitsize */ | |
452 | FALSE, /* pc_relative */ | |
453 | 0, /* bitpos */ | |
454 | complain_overflow_bitfield, /* complain_on_overflow */ | |
455 | bfd_elf_generic_reloc, /* */ | |
456 | "R_MN10300_COPY", /* name */ | |
457 | FALSE, /* partial_inplace */ | |
458 | 0xffffffff, /* src_mask */ | |
459 | 0xffffffff, /* dst_mask */ | |
460 | FALSE), /* pcrel_offset */ | |
461 | ||
462 | HOWTO (R_MN10300_GLOB_DAT, /* type */ | |
463 | 0, /* rightshift */ | |
464 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
465 | 32, /* bitsize */ | |
466 | FALSE, /* pc_relative */ | |
467 | 0, /* bitpos */ | |
468 | complain_overflow_bitfield, /* complain_on_overflow */ | |
469 | bfd_elf_generic_reloc, /* */ | |
470 | "R_MN10300_GLOB_DAT", /* name */ | |
471 | FALSE, /* partial_inplace */ | |
472 | 0xffffffff, /* src_mask */ | |
473 | 0xffffffff, /* dst_mask */ | |
474 | FALSE), /* pcrel_offset */ | |
475 | ||
476 | HOWTO (R_MN10300_JMP_SLOT, /* type */ | |
477 | 0, /* rightshift */ | |
478 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
479 | 32, /* bitsize */ | |
480 | FALSE, /* pc_relative */ | |
481 | 0, /* bitpos */ | |
482 | complain_overflow_bitfield, /* complain_on_overflow */ | |
483 | bfd_elf_generic_reloc, /* */ | |
484 | "R_MN10300_JMP_SLOT", /* name */ | |
485 | FALSE, /* partial_inplace */ | |
486 | 0xffffffff, /* src_mask */ | |
487 | 0xffffffff, /* dst_mask */ | |
488 | FALSE), /* pcrel_offset */ | |
489 | ||
490 | HOWTO (R_MN10300_RELATIVE, /* type */ | |
491 | 0, /* rightshift */ | |
492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
493 | 32, /* bitsize */ | |
494 | FALSE, /* pc_relative */ | |
495 | 0, /* bitpos */ | |
496 | complain_overflow_bitfield, /* complain_on_overflow */ | |
497 | bfd_elf_generic_reloc, /* */ | |
498 | "R_MN10300_RELATIVE", /* name */ | |
499 | FALSE, /* partial_inplace */ | |
500 | 0xffffffff, /* src_mask */ | |
501 | 0xffffffff, /* dst_mask */ | |
502 | FALSE), /* pcrel_offset */ | |
503 | ||
252b5132 RH |
504 | }; |
505 | ||
010ac81f | 506 | struct mn10300_reloc_map { |
252b5132 RH |
507 | bfd_reloc_code_real_type bfd_reloc_val; |
508 | unsigned char elf_reloc_val; | |
509 | }; | |
510 | ||
010ac81f | 511 | static const struct mn10300_reloc_map mn10300_reloc_map[] = { |
252b5132 RH |
512 | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
513 | { BFD_RELOC_32, R_MN10300_32, }, | |
514 | { BFD_RELOC_16, R_MN10300_16, }, | |
515 | { BFD_RELOC_8, R_MN10300_8, }, | |
516 | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, | |
517 | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, | |
518 | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, | |
519 | { BFD_RELOC_24, R_MN10300_24, }, | |
520 | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, | |
521 | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, | |
03a12831 AO |
522 | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
523 | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, | |
524 | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, | |
525 | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, | |
526 | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, | |
527 | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, | |
528 | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, | |
529 | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, | |
530 | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, | |
531 | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, | |
532 | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, | |
533 | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, | |
534 | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, | |
535 | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, | |
252b5132 RH |
536 | }; |
537 | ||
03a12831 AO |
538 | /* Create the GOT section. */ |
539 | ||
540 | static bfd_boolean | |
541 | _bfd_mn10300_elf_create_got_section (abfd, info) | |
542 | bfd * abfd; | |
543 | struct bfd_link_info * info; | |
544 | { | |
545 | flagword flags; | |
546 | flagword pltflags; | |
547 | asection * s; | |
548 | struct elf_link_hash_entry * h; | |
9c5bfbb7 | 549 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
550 | int ptralign; |
551 | ||
552 | /* This function may be called more than once. */ | |
553 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
554 | return TRUE; | |
555 | ||
556 | switch (bed->s->arch_size) | |
557 | { | |
558 | case 32: | |
559 | ptralign = 2; | |
560 | break; | |
561 | ||
562 | case 64: | |
563 | ptralign = 3; | |
564 | break; | |
565 | ||
566 | default: | |
567 | bfd_set_error (bfd_error_bad_value); | |
568 | return FALSE; | |
569 | } | |
570 | ||
571 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
572 | | SEC_LINKER_CREATED); | |
573 | ||
574 | pltflags = flags; | |
575 | pltflags |= SEC_CODE; | |
576 | if (bed->plt_not_loaded) | |
577 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
578 | if (bed->plt_readonly) | |
579 | pltflags |= SEC_READONLY; | |
580 | ||
3496cb2a | 581 | s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
03a12831 | 582 | if (s == NULL |
03a12831 AO |
583 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
584 | return FALSE; | |
585 | ||
d98685ac AM |
586 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
587 | .plt section. */ | |
7325306f RS |
588 | if (bed->want_plt_sym) |
589 | { | |
590 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
591 | "_PROCEDURE_LINKAGE_TABLE_"); | |
592 | elf_hash_table (info)->hplt = h; | |
593 | if (h == NULL) | |
594 | return FALSE; | |
595 | } | |
03a12831 | 596 | |
3496cb2a | 597 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
03a12831 | 598 | if (s == NULL |
03a12831 AO |
599 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
600 | return FALSE; | |
601 | ||
602 | if (bed->want_got_plt) | |
603 | { | |
3496cb2a | 604 | s = bfd_make_section_with_flags (abfd, ".got.plt", flags); |
03a12831 | 605 | if (s == NULL |
03a12831 AO |
606 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
607 | return FALSE; | |
608 | } | |
609 | ||
610 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
611 | (or .got.plt) section. We don't do this in the linker script | |
612 | because we don't want to define the symbol if we are not creating | |
613 | a global offset table. */ | |
d98685ac | 614 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
03a12831 | 615 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
616 | if (h == NULL) |
617 | return FALSE; | |
03a12831 AO |
618 | |
619 | /* The first bit of the global offset table is the header. */ | |
3b36f7e6 | 620 | s->size += bed->got_header_size; |
03a12831 AO |
621 | |
622 | return TRUE; | |
623 | } | |
624 | ||
252b5132 RH |
625 | static reloc_howto_type * |
626 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
5f771d47 | 627 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
628 | bfd_reloc_code_real_type code; |
629 | { | |
630 | unsigned int i; | |
631 | ||
632 | for (i = 0; | |
633 | i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map); | |
634 | i++) | |
635 | { | |
636 | if (mn10300_reloc_map[i].bfd_reloc_val == code) | |
637 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; | |
638 | } | |
639 | ||
640 | return NULL; | |
641 | } | |
642 | ||
643 | /* Set the howto pointer for an MN10300 ELF reloc. */ | |
644 | ||
645 | static void | |
646 | mn10300_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 647 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 648 | arelent *cache_ptr; |
947216bf | 649 | Elf_Internal_Rela *dst; |
252b5132 RH |
650 | { |
651 | unsigned int r_type; | |
652 | ||
653 | r_type = ELF32_R_TYPE (dst->r_info); | |
654 | BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); | |
655 | cache_ptr->howto = &elf_mn10300_howto_table[r_type]; | |
656 | } | |
657 | ||
658 | /* Look through the relocs for a section during the first phase. | |
659 | Since we don't do .gots or .plts, we just need to consider the | |
660 | virtual table relocs for gc. */ | |
661 | ||
b34976b6 | 662 | static bfd_boolean |
252b5132 RH |
663 | mn10300_elf_check_relocs (abfd, info, sec, relocs) |
664 | bfd *abfd; | |
665 | struct bfd_link_info *info; | |
666 | asection *sec; | |
667 | const Elf_Internal_Rela *relocs; | |
668 | { | |
669 | Elf_Internal_Shdr *symtab_hdr; | |
670 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
671 | const Elf_Internal_Rela *rel; | |
672 | const Elf_Internal_Rela *rel_end; | |
03a12831 AO |
673 | bfd * dynobj; |
674 | bfd_vma * local_got_offsets; | |
675 | asection * sgot; | |
676 | asection * srelgot; | |
677 | asection * sreloc; | |
678 | ||
679 | sgot = NULL; | |
680 | srelgot = NULL; | |
681 | sreloc = NULL; | |
252b5132 | 682 | |
1049f94e | 683 | if (info->relocatable) |
b34976b6 | 684 | return TRUE; |
252b5132 RH |
685 | |
686 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
687 | sym_hashes = elf_sym_hashes (abfd); | |
a7c10850 | 688 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
252b5132 RH |
689 | if (!elf_bad_symtab (abfd)) |
690 | sym_hashes_end -= symtab_hdr->sh_info; | |
691 | ||
03a12831 AO |
692 | dynobj = elf_hash_table (info)->dynobj; |
693 | local_got_offsets = elf_local_got_offsets (abfd); | |
252b5132 RH |
694 | rel_end = relocs + sec->reloc_count; |
695 | for (rel = relocs; rel < rel_end; rel++) | |
696 | { | |
697 | struct elf_link_hash_entry *h; | |
698 | unsigned long r_symndx; | |
699 | ||
700 | r_symndx = ELF32_R_SYM (rel->r_info); | |
701 | if (r_symndx < symtab_hdr->sh_info) | |
702 | h = NULL; | |
703 | else | |
973a3492 L |
704 | { |
705 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
706 | while (h->root.type == bfd_link_hash_indirect | |
707 | || h->root.type == bfd_link_hash_warning) | |
708 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
709 | } | |
252b5132 | 710 | |
03a12831 AO |
711 | /* Some relocs require a global offset table. */ |
712 | if (dynobj == NULL) | |
713 | { | |
714 | switch (ELF32_R_TYPE (rel->r_info)) | |
715 | { | |
716 | case R_MN10300_GOT32: | |
717 | case R_MN10300_GOT24: | |
718 | case R_MN10300_GOT16: | |
719 | case R_MN10300_GOTOFF32: | |
720 | case R_MN10300_GOTOFF24: | |
721 | case R_MN10300_GOTOFF16: | |
722 | case R_MN10300_GOTPC32: | |
723 | case R_MN10300_GOTPC16: | |
724 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
725 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) | |
726 | return FALSE; | |
727 | break; | |
728 | ||
729 | default: | |
730 | break; | |
731 | } | |
732 | } | |
733 | ||
252b5132 RH |
734 | switch (ELF32_R_TYPE (rel->r_info)) |
735 | { | |
736 | /* This relocation describes the C++ object vtable hierarchy. | |
737 | Reconstruct it for later use during GC. */ | |
738 | case R_MN10300_GNU_VTINHERIT: | |
c152c796 | 739 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 740 | return FALSE; |
252b5132 RH |
741 | break; |
742 | ||
743 | /* This relocation describes which C++ vtable entries are actually | |
744 | used. Record for later use during GC. */ | |
745 | case R_MN10300_GNU_VTENTRY: | |
c152c796 | 746 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 747 | return FALSE; |
252b5132 | 748 | break; |
03a12831 AO |
749 | case R_MN10300_GOT32: |
750 | case R_MN10300_GOT24: | |
751 | case R_MN10300_GOT16: | |
752 | /* This symbol requires a global offset table entry. */ | |
753 | ||
754 | if (sgot == NULL) | |
755 | { | |
756 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
757 | BFD_ASSERT (sgot != NULL); | |
758 | } | |
759 | ||
760 | if (srelgot == NULL | |
761 | && (h != NULL || info->shared)) | |
762 | { | |
763 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
764 | if (srelgot == NULL) | |
765 | { | |
3496cb2a L |
766 | srelgot = bfd_make_section_with_flags (dynobj, |
767 | ".rela.got", | |
768 | (SEC_ALLOC | |
769 | | SEC_LOAD | |
770 | | SEC_HAS_CONTENTS | |
771 | | SEC_IN_MEMORY | |
772 | | SEC_LINKER_CREATED | |
773 | | SEC_READONLY)); | |
03a12831 | 774 | if (srelgot == NULL |
03a12831 AO |
775 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) |
776 | return FALSE; | |
777 | } | |
778 | } | |
779 | ||
780 | if (h != NULL) | |
781 | { | |
782 | if (h->got.offset != (bfd_vma) -1) | |
783 | /* We have already allocated space in the .got. */ | |
784 | break; | |
785 | ||
eea6121a | 786 | h->got.offset = sgot->size; |
03a12831 AO |
787 | |
788 | /* Make sure this symbol is output as a dynamic symbol. */ | |
789 | if (h->dynindx == -1) | |
790 | { | |
c152c796 | 791 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
792 | return FALSE; |
793 | } | |
794 | ||
eea6121a | 795 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
796 | } |
797 | else | |
798 | { | |
799 | /* This is a global offset table entry for a local | |
3b36f7e6 | 800 | symbol. */ |
03a12831 AO |
801 | if (local_got_offsets == NULL) |
802 | { | |
803 | size_t size; | |
804 | unsigned int i; | |
805 | ||
806 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
807 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
808 | ||
809 | if (local_got_offsets == NULL) | |
810 | return FALSE; | |
811 | elf_local_got_offsets (abfd) = local_got_offsets; | |
812 | ||
813 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
814 | local_got_offsets[i] = (bfd_vma) -1; | |
815 | } | |
816 | ||
817 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
818 | /* We have already allocated space in the .got. */ | |
819 | break; | |
820 | ||
eea6121a | 821 | local_got_offsets[r_symndx] = sgot->size; |
03a12831 AO |
822 | |
823 | if (info->shared) | |
824 | /* If we are generating a shared object, we need to | |
825 | output a R_MN10300_RELATIVE reloc so that the dynamic | |
826 | linker can adjust this GOT entry. */ | |
eea6121a | 827 | srelgot->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
828 | } |
829 | ||
eea6121a | 830 | sgot->size += 4; |
03a12831 AO |
831 | |
832 | break; | |
833 | ||
834 | case R_MN10300_PLT32: | |
835 | case R_MN10300_PLT16: | |
836 | /* This symbol requires a procedure linkage table entry. We | |
837 | actually build the entry in adjust_dynamic_symbol, | |
838 | because this might be a case of linking PIC code which is | |
839 | never referenced by a dynamic object, in which case we | |
840 | don't need to generate a procedure linkage table entry | |
841 | after all. */ | |
842 | ||
843 | /* If this is a local symbol, we resolve it directly without | |
844 | creating a procedure linkage table entry. */ | |
845 | if (h == NULL) | |
846 | continue; | |
847 | ||
848 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
849 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
850 | break; | |
851 | ||
f5385ebf | 852 | h->needs_plt = 1; |
03a12831 AO |
853 | |
854 | break; | |
855 | ||
03a12831 AO |
856 | case R_MN10300_24: |
857 | case R_MN10300_16: | |
858 | case R_MN10300_8: | |
859 | case R_MN10300_PCREL32: | |
860 | case R_MN10300_PCREL16: | |
861 | case R_MN10300_PCREL8: | |
862 | if (h != NULL) | |
f5385ebf | 863 | h->non_got_ref = 1; |
146ccdbb | 864 | break; |
03a12831 | 865 | |
146ccdbb AO |
866 | case R_MN10300_32: |
867 | if (h != NULL) | |
f5385ebf | 868 | h->non_got_ref = 1; |
146ccdbb AO |
869 | |
870 | /* If we are creating a shared library, then we need to copy | |
871 | the reloc into the shared library. */ | |
03a12831 | 872 | if (info->shared |
146ccdbb | 873 | && (sec->flags & SEC_ALLOC) != 0) |
03a12831 AO |
874 | { |
875 | /* When creating a shared object, we must copy these | |
876 | reloc types into the output file. We create a reloc | |
877 | section in dynobj and make room for this reloc. */ | |
878 | if (sreloc == NULL) | |
879 | { | |
880 | const char * name; | |
881 | ||
882 | name = (bfd_elf_string_from_elf_section | |
883 | (abfd, | |
884 | elf_elfheader (abfd)->e_shstrndx, | |
885 | elf_section_data (sec)->rel_hdr.sh_name)); | |
886 | if (name == NULL) | |
887 | return FALSE; | |
888 | ||
0112cd26 | 889 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
03a12831 AO |
890 | && strcmp (bfd_get_section_name (abfd, sec), |
891 | name + 5) == 0); | |
892 | ||
893 | sreloc = bfd_get_section_by_name (dynobj, name); | |
894 | if (sreloc == NULL) | |
895 | { | |
896 | flagword flags; | |
897 | ||
03a12831 AO |
898 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
899 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
900 | if ((sec->flags & SEC_ALLOC) != 0) | |
901 | flags |= SEC_ALLOC | SEC_LOAD; | |
3496cb2a L |
902 | sreloc = bfd_make_section_with_flags (dynobj, |
903 | name, | |
904 | flags); | |
03a12831 | 905 | if (sreloc == NULL |
03a12831 AO |
906 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
907 | return FALSE; | |
908 | } | |
909 | } | |
910 | ||
eea6121a | 911 | sreloc->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
912 | } |
913 | ||
914 | break; | |
252b5132 RH |
915 | } |
916 | } | |
917 | ||
b34976b6 | 918 | return TRUE; |
252b5132 RH |
919 | } |
920 | ||
921 | /* Return the section that should be marked against GC for a given | |
922 | relocation. */ | |
923 | ||
924 | static asection * | |
1e2f5b6e AM |
925 | mn10300_elf_gc_mark_hook (sec, info, rel, h, sym) |
926 | asection *sec; | |
5f771d47 | 927 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
928 | Elf_Internal_Rela *rel; |
929 | struct elf_link_hash_entry *h; | |
930 | Elf_Internal_Sym *sym; | |
931 | { | |
932 | if (h != NULL) | |
933 | { | |
934 | switch (ELF32_R_TYPE (rel->r_info)) | |
935 | { | |
936 | case R_MN10300_GNU_VTINHERIT: | |
937 | case R_MN10300_GNU_VTENTRY: | |
938 | break; | |
939 | ||
940 | default: | |
941 | switch (h->root.type) | |
942 | { | |
943 | case bfd_link_hash_defined: | |
944 | case bfd_link_hash_defweak: | |
945 | return h->root.u.def.section; | |
946 | ||
947 | case bfd_link_hash_common: | |
948 | return h->root.u.c.p->section; | |
e049a0de ILT |
949 | |
950 | default: | |
951 | break; | |
252b5132 RH |
952 | } |
953 | } | |
954 | } | |
955 | else | |
1e2f5b6e | 956 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
957 | |
958 | return NULL; | |
959 | } | |
960 | ||
961 | /* Perform a relocation as part of a final link. */ | |
962 | static bfd_reloc_status_type | |
963 | mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
964 | input_section, contents, offset, value, | |
03a12831 | 965 | addend, h, symndx, info, sym_sec, is_local) |
252b5132 RH |
966 | reloc_howto_type *howto; |
967 | bfd *input_bfd; | |
5f771d47 | 968 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
969 | asection *input_section; |
970 | bfd_byte *contents; | |
971 | bfd_vma offset; | |
972 | bfd_vma value; | |
973 | bfd_vma addend; | |
03a12831 AO |
974 | struct elf_link_hash_entry * h; |
975 | unsigned long symndx; | |
eea6121a | 976 | struct bfd_link_info *info; |
5f771d47 ILT |
977 | asection *sym_sec ATTRIBUTE_UNUSED; |
978 | int is_local ATTRIBUTE_UNUSED; | |
252b5132 RH |
979 | { |
980 | unsigned long r_type = howto->type; | |
981 | bfd_byte *hit_data = contents + offset; | |
03a12831 AO |
982 | bfd * dynobj; |
983 | bfd_vma * local_got_offsets; | |
984 | asection * sgot; | |
985 | asection * splt; | |
986 | asection * sreloc; | |
987 | ||
988 | dynobj = elf_hash_table (info)->dynobj; | |
989 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
990 | ||
991 | sgot = NULL; | |
992 | splt = NULL; | |
993 | sreloc = NULL; | |
252b5132 | 994 | |
146ccdbb AO |
995 | switch (r_type) |
996 | { | |
997 | case R_MN10300_24: | |
998 | case R_MN10300_16: | |
999 | case R_MN10300_8: | |
1000 | case R_MN10300_PCREL8: | |
1001 | case R_MN10300_PCREL16: | |
1002 | case R_MN10300_PCREL32: | |
1003 | case R_MN10300_GOTOFF32: | |
1004 | case R_MN10300_GOTOFF24: | |
1005 | case R_MN10300_GOTOFF16: | |
1006 | if (info->shared | |
1007 | && (input_section->flags & SEC_ALLOC) != 0 | |
1008 | && h != NULL | |
7e2294f9 | 1009 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
146ccdbb AO |
1010 | return bfd_reloc_dangerous; |
1011 | } | |
1012 | ||
252b5132 RH |
1013 | switch (r_type) |
1014 | { | |
1015 | case R_MN10300_NONE: | |
1016 | return bfd_reloc_ok; | |
1017 | ||
1018 | case R_MN10300_32: | |
03a12831 AO |
1019 | if (info->shared |
1020 | && (input_section->flags & SEC_ALLOC) != 0) | |
1021 | { | |
1022 | Elf_Internal_Rela outrel; | |
1023 | bfd_boolean skip, relocate; | |
1024 | ||
1025 | /* When generating a shared object, these relocations are | |
1026 | copied into the output file to be resolved at run | |
1027 | time. */ | |
1028 | if (sreloc == NULL) | |
1029 | { | |
1030 | const char * name; | |
1031 | ||
1032 | name = (bfd_elf_string_from_elf_section | |
1033 | (input_bfd, | |
1034 | elf_elfheader (input_bfd)->e_shstrndx, | |
1035 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1036 | if (name == NULL) | |
1037 | return FALSE; | |
1038 | ||
0112cd26 | 1039 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
03a12831 AO |
1040 | && strcmp (bfd_get_section_name (input_bfd, |
1041 | input_section), | |
1042 | name + 5) == 0); | |
1043 | ||
1044 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1045 | BFD_ASSERT (sreloc != NULL); | |
1046 | } | |
1047 | ||
1048 | skip = FALSE; | |
1049 | ||
eea6121a AM |
1050 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1051 | input_section, offset); | |
1052 | if (outrel.r_offset == (bfd_vma) -1) | |
1053 | skip = TRUE; | |
03a12831 AO |
1054 | |
1055 | outrel.r_offset += (input_section->output_section->vma | |
1056 | + input_section->output_offset); | |
1057 | ||
1058 | if (skip) | |
1059 | { | |
1060 | memset (&outrel, 0, sizeof outrel); | |
1061 | relocate = FALSE; | |
1062 | } | |
1063 | else | |
1064 | { | |
1065 | /* h->dynindx may be -1 if this symbol was marked to | |
1066 | become local. */ | |
1067 | if (h == NULL | |
7e2294f9 | 1068 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1069 | { |
1070 | relocate = TRUE; | |
1071 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1072 | outrel.r_addend = value + addend; | |
1073 | } | |
1074 | else | |
1075 | { | |
1076 | BFD_ASSERT (h->dynindx != -1); | |
1077 | relocate = FALSE; | |
1078 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1079 | outrel.r_addend = value + addend; | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1084 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1085 | + sreloc->reloc_count)); | |
03a12831 AO |
1086 | ++sreloc->reloc_count; |
1087 | ||
1088 | /* If this reloc is against an external symbol, we do | |
1089 | not want to fiddle with the addend. Otherwise, we | |
1090 | need to include the symbol value so that it becomes | |
1091 | an addend for the dynamic reloc. */ | |
1092 | if (! relocate) | |
1093 | return bfd_reloc_ok; | |
1094 | } | |
252b5132 RH |
1095 | value += addend; |
1096 | bfd_put_32 (input_bfd, value, hit_data); | |
1097 | return bfd_reloc_ok; | |
1098 | ||
1099 | case R_MN10300_24: | |
1100 | value += addend; | |
1101 | ||
010ac81f | 1102 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1103 | return bfd_reloc_overflow; |
1104 | ||
1105 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1106 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1107 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1108 | return bfd_reloc_ok; | |
1109 | ||
1110 | case R_MN10300_16: | |
1111 | value += addend; | |
1112 | ||
010ac81f | 1113 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1114 | return bfd_reloc_overflow; |
1115 | ||
1116 | bfd_put_16 (input_bfd, value, hit_data); | |
1117 | return bfd_reloc_ok; | |
1118 | ||
1119 | case R_MN10300_8: | |
1120 | value += addend; | |
1121 | ||
010ac81f | 1122 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1123 | return bfd_reloc_overflow; |
1124 | ||
1125 | bfd_put_8 (input_bfd, value, hit_data); | |
1126 | return bfd_reloc_ok; | |
1127 | ||
1128 | case R_MN10300_PCREL8: | |
1129 | value -= (input_section->output_section->vma | |
1130 | + input_section->output_offset); | |
1131 | value -= offset; | |
1132 | value += addend; | |
1133 | ||
010ac81f | 1134 | if ((long) value > 0xff || (long) value < -0x100) |
252b5132 RH |
1135 | return bfd_reloc_overflow; |
1136 | ||
1137 | bfd_put_8 (input_bfd, value, hit_data); | |
1138 | return bfd_reloc_ok; | |
1139 | ||
1140 | case R_MN10300_PCREL16: | |
1141 | value -= (input_section->output_section->vma | |
1142 | + input_section->output_offset); | |
1143 | value -= offset; | |
1144 | value += addend; | |
1145 | ||
010ac81f | 1146 | if ((long) value > 0xffff || (long) value < -0x10000) |
252b5132 RH |
1147 | return bfd_reloc_overflow; |
1148 | ||
1149 | bfd_put_16 (input_bfd, value, hit_data); | |
1150 | return bfd_reloc_ok; | |
1151 | ||
1152 | case R_MN10300_PCREL32: | |
1153 | value -= (input_section->output_section->vma | |
1154 | + input_section->output_offset); | |
1155 | value -= offset; | |
1156 | value += addend; | |
1157 | ||
1158 | bfd_put_32 (input_bfd, value, hit_data); | |
1159 | return bfd_reloc_ok; | |
1160 | ||
1161 | case R_MN10300_GNU_VTINHERIT: | |
1162 | case R_MN10300_GNU_VTENTRY: | |
1163 | return bfd_reloc_ok; | |
1164 | ||
03a12831 AO |
1165 | case R_MN10300_GOTPC32: |
1166 | /* Use global offset table as symbol value. */ | |
1167 | ||
1168 | value = bfd_get_section_by_name (dynobj, | |
1169 | ".got")->output_section->vma; | |
1170 | value -= (input_section->output_section->vma | |
1171 | + input_section->output_offset); | |
1172 | value -= offset; | |
1173 | value += addend; | |
1174 | ||
1175 | bfd_put_32 (input_bfd, value, hit_data); | |
1176 | return bfd_reloc_ok; | |
3b36f7e6 | 1177 | |
03a12831 AO |
1178 | case R_MN10300_GOTPC16: |
1179 | /* Use global offset table as symbol value. */ | |
1180 | ||
1181 | value = bfd_get_section_by_name (dynobj, | |
1182 | ".got")->output_section->vma; | |
1183 | value -= (input_section->output_section->vma | |
1184 | + input_section->output_offset); | |
1185 | value -= offset; | |
1186 | value += addend; | |
1187 | ||
1188 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1189 | return bfd_reloc_overflow; | |
1190 | ||
1191 | bfd_put_16 (input_bfd, value, hit_data); | |
1192 | return bfd_reloc_ok; | |
1193 | ||
1194 | case R_MN10300_GOTOFF32: | |
1195 | value -= bfd_get_section_by_name (dynobj, | |
1196 | ".got")->output_section->vma; | |
1197 | value += addend; | |
3b36f7e6 | 1198 | |
03a12831 AO |
1199 | bfd_put_32 (input_bfd, value, hit_data); |
1200 | return bfd_reloc_ok; | |
1201 | ||
1202 | case R_MN10300_GOTOFF24: | |
1203 | value -= bfd_get_section_by_name (dynobj, | |
1204 | ".got")->output_section->vma; | |
1205 | value += addend; | |
3b36f7e6 | 1206 | |
03a12831 AO |
1207 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1208 | return bfd_reloc_overflow; | |
1209 | ||
1210 | bfd_put_8 (input_bfd, value, hit_data); | |
1211 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1212 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1213 | return bfd_reloc_ok; | |
1214 | ||
1215 | case R_MN10300_GOTOFF16: | |
1216 | value -= bfd_get_section_by_name (dynobj, | |
1217 | ".got")->output_section->vma; | |
1218 | value += addend; | |
3b36f7e6 | 1219 | |
03a12831 AO |
1220 | if ((long) value > 0xffff || (long) value < -0x10000) |
1221 | return bfd_reloc_overflow; | |
1222 | ||
1223 | bfd_put_16 (input_bfd, value, hit_data); | |
1224 | return bfd_reloc_ok; | |
1225 | ||
1226 | case R_MN10300_PLT32: | |
1227 | if (h != NULL | |
1228 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1229 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1230 | && h->plt.offset != (bfd_vma) -1) | |
1231 | { | |
1232 | asection * splt; | |
1233 | ||
1234 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3b36f7e6 | 1235 | |
03a12831 AO |
1236 | value = (splt->output_section->vma |
1237 | + splt->output_offset | |
1238 | + h->plt.offset) - value; | |
1239 | } | |
1240 | ||
1241 | value -= (input_section->output_section->vma | |
1242 | + input_section->output_offset); | |
1243 | value -= offset; | |
1244 | value += addend; | |
1245 | ||
1246 | bfd_put_32 (input_bfd, value, hit_data); | |
1247 | return bfd_reloc_ok; | |
1248 | ||
1249 | case R_MN10300_PLT16: | |
1250 | if (h != NULL | |
1251 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1252 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1253 | && h->plt.offset != (bfd_vma) -1) | |
1254 | { | |
1255 | asection * splt; | |
1256 | ||
1257 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3b36f7e6 | 1258 | |
03a12831 AO |
1259 | value = (splt->output_section->vma |
1260 | + splt->output_offset | |
1261 | + h->plt.offset) - value; | |
1262 | } | |
1263 | ||
1264 | value -= (input_section->output_section->vma | |
1265 | + input_section->output_offset); | |
1266 | value -= offset; | |
1267 | value += addend; | |
1268 | ||
1269 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1270 | return bfd_reloc_overflow; | |
1271 | ||
1272 | bfd_put_16 (input_bfd, value, hit_data); | |
1273 | return bfd_reloc_ok; | |
1274 | ||
1275 | case R_MN10300_GOT32: | |
1276 | case R_MN10300_GOT24: | |
1277 | case R_MN10300_GOT16: | |
1278 | { | |
1279 | asection * sgot; | |
1280 | ||
1281 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3b36f7e6 | 1282 | |
03a12831 AO |
1283 | if (h != NULL) |
1284 | { | |
1285 | bfd_vma off; | |
1286 | ||
1287 | off = h->got.offset; | |
1288 | BFD_ASSERT (off != (bfd_vma) -1); | |
1289 | ||
1290 | if (! elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1291 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
03a12831 AO |
1292 | /* This is actually a static link, or it is a |
1293 | -Bsymbolic link and the symbol is defined | |
1294 | locally, or the symbol was forced to be local | |
1295 | because of a version file. We must initialize | |
1296 | this entry in the global offset table. | |
1297 | ||
1298 | When doing a dynamic link, we create a .rela.got | |
1299 | relocation entry to initialize the value. This | |
1300 | is done in the finish_dynamic_symbol routine. */ | |
1301 | bfd_put_32 (output_bfd, value, | |
1302 | sgot->contents + off); | |
1303 | ||
1304 | value = sgot->output_offset + off; | |
1305 | } | |
1306 | else | |
1307 | { | |
1308 | bfd_vma off; | |
1309 | ||
1310 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1311 | ||
1312 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
1313 | ||
1314 | if (info->shared) | |
1315 | { | |
1316 | asection * srelgot; | |
1317 | Elf_Internal_Rela outrel; | |
1318 | ||
1319 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1320 | BFD_ASSERT (srelgot != NULL); | |
1321 | ||
1322 | outrel.r_offset = (sgot->output_section->vma | |
1323 | + sgot->output_offset | |
1324 | + off); | |
1325 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1326 | outrel.r_addend = value; | |
1327 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1328 | (bfd_byte *) (((Elf32_External_Rela *) |
1329 | srelgot->contents) | |
1330 | + srelgot->reloc_count)); | |
03a12831 AO |
1331 | ++ srelgot->reloc_count; |
1332 | } | |
1333 | ||
1334 | value = sgot->output_offset + off; | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | value += addend; | |
1339 | ||
1340 | if (r_type == R_MN10300_GOT32) | |
1341 | { | |
1342 | bfd_put_32 (input_bfd, value, hit_data); | |
1343 | return bfd_reloc_ok; | |
1344 | } | |
1345 | else if (r_type == R_MN10300_GOT24) | |
1346 | { | |
1347 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1348 | return bfd_reloc_overflow; | |
1349 | ||
1350 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1351 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1352 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1353 | return bfd_reloc_ok; | |
1354 | } | |
1355 | else if (r_type == R_MN10300_GOT16) | |
1356 | { | |
1357 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1358 | return bfd_reloc_overflow; | |
1359 | ||
1360 | bfd_put_16 (input_bfd, value, hit_data); | |
1361 | return bfd_reloc_ok; | |
1362 | } | |
1363 | /* Fall through. */ | |
3b36f7e6 | 1364 | |
252b5132 RH |
1365 | default: |
1366 | return bfd_reloc_notsupported; | |
1367 | } | |
1368 | } | |
252b5132 RH |
1369 | \f |
1370 | /* Relocate an MN10300 ELF section. */ | |
b34976b6 | 1371 | static bfd_boolean |
252b5132 RH |
1372 | mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
1373 | contents, relocs, local_syms, local_sections) | |
1374 | bfd *output_bfd; | |
1375 | struct bfd_link_info *info; | |
1376 | bfd *input_bfd; | |
1377 | asection *input_section; | |
1378 | bfd_byte *contents; | |
1379 | Elf_Internal_Rela *relocs; | |
1380 | Elf_Internal_Sym *local_syms; | |
1381 | asection **local_sections; | |
1382 | { | |
1383 | Elf_Internal_Shdr *symtab_hdr; | |
b2a8e766 | 1384 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
1385 | Elf_Internal_Rela *rel, *relend; |
1386 | ||
1049f94e | 1387 | if (info->relocatable) |
b34976b6 | 1388 | return TRUE; |
b491616a | 1389 | |
252b5132 | 1390 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
b2a8e766 | 1391 | sym_hashes = elf_sym_hashes (input_bfd); |
252b5132 RH |
1392 | |
1393 | rel = relocs; | |
1394 | relend = relocs + input_section->reloc_count; | |
1395 | for (; rel < relend; rel++) | |
1396 | { | |
1397 | int r_type; | |
1398 | reloc_howto_type *howto; | |
1399 | unsigned long r_symndx; | |
1400 | Elf_Internal_Sym *sym; | |
1401 | asection *sec; | |
1402 | struct elf32_mn10300_link_hash_entry *h; | |
1403 | bfd_vma relocation; | |
1404 | bfd_reloc_status_type r; | |
1405 | ||
1406 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1407 | r_type = ELF32_R_TYPE (rel->r_info); | |
1408 | howto = elf_mn10300_howto_table + r_type; | |
1409 | ||
1410 | /* Just skip the vtable gc relocs. */ | |
1411 | if (r_type == R_MN10300_GNU_VTINHERIT | |
1412 | || r_type == R_MN10300_GNU_VTENTRY) | |
1413 | continue; | |
1414 | ||
252b5132 RH |
1415 | h = NULL; |
1416 | sym = NULL; | |
1417 | sec = NULL; | |
1418 | if (r_symndx < symtab_hdr->sh_info) | |
1419 | { | |
1420 | sym = local_syms + r_symndx; | |
1421 | sec = local_sections[r_symndx]; | |
8517fae7 | 1422 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1423 | } |
1424 | else | |
1425 | { | |
560e09e9 NC |
1426 | bfd_boolean unresolved_reloc; |
1427 | bfd_boolean warned; | |
1428 | struct elf_link_hash_entry *hh; | |
1429 | ||
b2a8e766 AM |
1430 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1431 | r_symndx, symtab_hdr, sym_hashes, | |
1432 | hh, sec, relocation, | |
1433 | unresolved_reloc, warned); | |
560e09e9 NC |
1434 | |
1435 | h = (struct elf32_mn10300_link_hash_entry *) hh; | |
1436 | ||
1437 | if ((h->root.root.type == bfd_link_hash_defined | |
252b5132 | 1438 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 1439 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
1440 | || r_type == R_MN10300_GOTPC16 |
1441 | || (( r_type == R_MN10300_PLT32 | |
1442 | || r_type == R_MN10300_PLT16) | |
1443 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
1444 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
1445 | && h->root.plt.offset != (bfd_vma) -1) | |
1446 | || (( r_type == R_MN10300_GOT32 | |
1447 | || r_type == R_MN10300_GOT24 | |
1448 | || r_type == R_MN10300_GOT16) | |
1449 | && elf_hash_table (info)->dynamic_sections_created | |
7e2294f9 | 1450 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
146ccdbb | 1451 | || (r_type == R_MN10300_32 |
7e2294f9 | 1452 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
03a12831 AO |
1453 | && ((input_section->flags & SEC_ALLOC) != 0 |
1454 | /* DWARF will emit R_MN10300_32 relocations | |
1455 | in its sections against symbols defined | |
1456 | externally in shared libraries. We can't | |
1457 | do anything with them here. */ | |
1458 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1459 | && h->root.def_dynamic))))) |
560e09e9 NC |
1460 | /* In these cases, we don't need the relocation |
1461 | value. We check specially because in some | |
1462 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 1463 | relocation = 0; |
560e09e9 NC |
1464 | |
1465 | else if (unresolved_reloc) | |
1466 | (*_bfd_error_handler) | |
843fe662 L |
1467 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
1468 | input_bfd, | |
1469 | input_section, | |
1470 | (long) rel->r_offset, | |
1471 | howto->name, | |
1472 | h->root.root.root.string); | |
252b5132 RH |
1473 | } |
1474 | ||
1475 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
1476 | input_section, | |
1477 | contents, rel->r_offset, | |
1478 | relocation, rel->r_addend, | |
03a12831 AO |
1479 | (struct elf_link_hash_entry *)h, |
1480 | r_symndx, | |
252b5132 RH |
1481 | info, sec, h == NULL); |
1482 | ||
1483 | if (r != bfd_reloc_ok) | |
1484 | { | |
1485 | const char *name; | |
010ac81f | 1486 | const char *msg = (const char *) 0; |
252b5132 RH |
1487 | |
1488 | if (h != NULL) | |
1489 | name = h->root.root.root.string; | |
1490 | else | |
1491 | { | |
1492 | name = (bfd_elf_string_from_elf_section | |
1493 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1494 | if (name == NULL || *name == '\0') | |
1495 | name = bfd_section_name (input_bfd, sec); | |
1496 | } | |
1497 | ||
1498 | switch (r) | |
1499 | { | |
1500 | case bfd_reloc_overflow: | |
1501 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1502 | (info, (h ? &h->root.root : NULL), name, |
1503 | howto->name, (bfd_vma) 0, input_bfd, | |
1504 | input_section, rel->r_offset))) | |
b34976b6 | 1505 | return FALSE; |
252b5132 RH |
1506 | break; |
1507 | ||
1508 | case bfd_reloc_undefined: | |
1509 | if (! ((*info->callbacks->undefined_symbol) | |
1510 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1511 | rel->r_offset, TRUE))) |
1512 | return FALSE; | |
252b5132 RH |
1513 | break; |
1514 | ||
1515 | case bfd_reloc_outofrange: | |
1516 | msg = _("internal error: out of range error"); | |
1517 | goto common_error; | |
1518 | ||
1519 | case bfd_reloc_notsupported: | |
1520 | msg = _("internal error: unsupported relocation error"); | |
1521 | goto common_error; | |
1522 | ||
1523 | case bfd_reloc_dangerous: | |
1524 | msg = _("internal error: dangerous error"); | |
1525 | goto common_error; | |
1526 | ||
1527 | default: | |
1528 | msg = _("internal error: unknown error"); | |
1529 | /* fall through */ | |
1530 | ||
1531 | common_error: | |
1532 | if (!((*info->callbacks->warning) | |
1533 | (info, msg, name, input_bfd, input_section, | |
1534 | rel->r_offset))) | |
b34976b6 | 1535 | return FALSE; |
252b5132 RH |
1536 | break; |
1537 | } | |
1538 | } | |
1539 | } | |
1540 | ||
b34976b6 | 1541 | return TRUE; |
252b5132 RH |
1542 | } |
1543 | ||
1544 | /* Finish initializing one hash table entry. */ | |
b34976b6 | 1545 | static bfd_boolean |
252b5132 RH |
1546 | elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) |
1547 | struct bfd_hash_entry *gen_entry; | |
1055df0f | 1548 | PTR in_args; |
252b5132 RH |
1549 | { |
1550 | struct elf32_mn10300_link_hash_entry *entry; | |
1055df0f | 1551 | struct bfd_link_info *link_info = (struct bfd_link_info *)in_args; |
252b5132 RH |
1552 | unsigned int byte_count = 0; |
1553 | ||
010ac81f | 1554 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 | 1555 | |
e92d460e AM |
1556 | if (entry->root.root.type == bfd_link_hash_warning) |
1557 | entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; | |
1558 | ||
252b5132 RH |
1559 | /* If we already know we want to convert "call" to "calls" for calls |
1560 | to this symbol, then return now. */ | |
1561 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 1562 | return TRUE; |
252b5132 RH |
1563 | |
1564 | /* If there are no named calls to this symbol, or there's nothing we | |
1055df0f AO |
1565 | can move from the function itself into the "call" instruction, |
1566 | then note that all "call" instructions should be converted into | |
1567 | "calls" instructions and return. If a symbol is available for | |
1568 | dynamic symbol resolution (overridable or overriding), avoid | |
1569 | custom calling conventions. */ | |
252b5132 | 1570 | if (entry->direct_calls == 0 |
1055df0f AO |
1571 | || (entry->stack_size == 0 && entry->movm_args == 0) |
1572 | || (elf_hash_table (link_info)->dynamic_sections_created | |
1573 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL | |
1574 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) | |
252b5132 RH |
1575 | { |
1576 | /* Make a note that we should convert "call" instructions to "calls" | |
1577 | instructions for calls to this symbol. */ | |
1578 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 1579 | return TRUE; |
252b5132 RH |
1580 | } |
1581 | ||
1582 | /* We may be able to move some instructions from the function itself into | |
1583 | the "call" instruction. Count how many bytes we might be able to | |
1584 | eliminate in the function itself. */ | |
1585 | ||
1586 | /* A movm instruction is two bytes. */ | |
1587 | if (entry->movm_args) | |
1588 | byte_count += 2; | |
1589 | ||
1590 | /* Count the insn to allocate stack space too. */ | |
1a101a42 AM |
1591 | if (entry->stack_size > 0) |
1592 | { | |
1593 | if (entry->stack_size <= 128) | |
1594 | byte_count += 3; | |
1595 | else | |
1596 | byte_count += 4; | |
1597 | } | |
252b5132 RH |
1598 | |
1599 | /* If using "call" will result in larger code, then turn all | |
4cc11e76 | 1600 | the associated "call" instructions into "calls" instructions. */ |
252b5132 RH |
1601 | if (byte_count < entry->direct_calls) |
1602 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1603 | ||
1604 | /* This routine never fails. */ | |
b34976b6 | 1605 | return TRUE; |
252b5132 RH |
1606 | } |
1607 | ||
eb13e63f DD |
1608 | /* Used to count hash table entries. */ |
1609 | static bfd_boolean | |
1610 | elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, | |
1611 | PTR in_args) | |
1612 | { | |
1613 | int *count = (int *)in_args; | |
1614 | ||
1615 | (*count) ++; | |
1616 | return TRUE; | |
1617 | } | |
1618 | ||
1619 | /* Used to enumerate hash table entries into a linear array. */ | |
1620 | static bfd_boolean | |
1621 | elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, | |
1622 | PTR in_args) | |
1623 | { | |
1624 | struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; | |
1625 | ||
1626 | **ptr = gen_entry; | |
1627 | (*ptr) ++; | |
1628 | return TRUE; | |
1629 | } | |
1630 | ||
1631 | /* Used to sort the array created by the above. */ | |
1632 | static int | |
1633 | sort_by_value (const void *va, const void *vb) | |
1634 | { | |
1635 | struct elf32_mn10300_link_hash_entry *a | |
1636 | = *(struct elf32_mn10300_link_hash_entry **)va; | |
1637 | struct elf32_mn10300_link_hash_entry *b | |
1638 | = *(struct elf32_mn10300_link_hash_entry **)vb; | |
1639 | ||
1640 | return a->value - b->value; | |
1641 | } | |
1642 | ||
1643 | ||
252b5132 RH |
1644 | /* This function handles relaxing for the mn10300. |
1645 | ||
4cc11e76 | 1646 | There are quite a few relaxing opportunities available on the mn10300: |
252b5132 RH |
1647 | |
1648 | * calls:32 -> calls:16 2 bytes | |
1649 | * call:32 -> call:16 2 bytes | |
1650 | ||
1651 | * call:32 -> calls:32 1 byte | |
1652 | * call:16 -> calls:16 1 byte | |
1653 | * These are done anytime using "calls" would result | |
1654 | in smaller code, or when necessary to preserve the | |
1655 | meaning of the program. | |
1656 | ||
1657 | * call:32 varies | |
1658 | * call:16 | |
1659 | * In some circumstances we can move instructions | |
1660 | from a function prologue into a "call" instruction. | |
1661 | This is only done if the resulting code is no larger | |
1662 | than the original code. | |
1663 | ||
252b5132 RH |
1664 | * jmp:32 -> jmp:16 2 bytes |
1665 | * jmp:16 -> bra:8 1 byte | |
1666 | ||
1667 | * If the previous instruction is a conditional branch | |
1668 | around the jump/bra, we may be able to reverse its condition | |
1669 | and change its target to the jump's target. The jump/bra | |
1670 | can then be deleted. 2 bytes | |
1671 | ||
1672 | * mov abs32 -> mov abs16 1 or 2 bytes | |
1673 | ||
1674 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
1675 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
1676 | ||
1677 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
1678 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
1679 | ||
1680 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
1681 | and somewhat more difficult to support. */ | |
1682 | ||
b34976b6 | 1683 | static bfd_boolean |
252b5132 RH |
1684 | mn10300_elf_relax_section (abfd, sec, link_info, again) |
1685 | bfd *abfd; | |
1686 | asection *sec; | |
1687 | struct bfd_link_info *link_info; | |
b34976b6 | 1688 | bfd_boolean *again; |
252b5132 RH |
1689 | { |
1690 | Elf_Internal_Shdr *symtab_hdr; | |
1691 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
1692 | Elf_Internal_Rela *irel, *irelend; |
1693 | bfd_byte *contents = NULL; | |
6cdc0ccc | 1694 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 1695 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 1696 | asection *section = sec; |
252b5132 RH |
1697 | |
1698 | /* Assume nothing changes. */ | |
b34976b6 | 1699 | *again = FALSE; |
252b5132 RH |
1700 | |
1701 | /* We need a pointer to the mn10300 specific hash table. */ | |
1702 | hash_table = elf32_mn10300_hash_table (link_info); | |
1703 | ||
1704 | /* Initialize fields in each hash table entry the first time through. */ | |
1705 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
1706 | { | |
1707 | bfd *input_bfd; | |
1708 | ||
1709 | /* Iterate over all the input bfds. */ | |
1710 | for (input_bfd = link_info->input_bfds; | |
1711 | input_bfd != NULL; | |
1712 | input_bfd = input_bfd->link_next) | |
1713 | { | |
252b5132 RH |
1714 | /* We're going to need all the symbols for each bfd. */ |
1715 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 1716 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 1717 | { |
6cdc0ccc AM |
1718 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1719 | if (isymbuf == NULL) | |
1720 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1721 | symtab_hdr->sh_info, 0, | |
1722 | NULL, NULL, NULL); | |
1723 | if (isymbuf == NULL) | |
010ac81f KH |
1724 | goto error_return; |
1725 | } | |
252b5132 RH |
1726 | |
1727 | /* Iterate over each section in this bfd. */ | |
1728 | for (section = input_bfd->sections; | |
1729 | section != NULL; | |
1730 | section = section->next) | |
1731 | { | |
1732 | struct elf32_mn10300_link_hash_entry *hash; | |
1733 | Elf_Internal_Sym *sym; | |
86033394 | 1734 | asection *sym_sec = NULL; |
252b5132 RH |
1735 | const char *sym_name; |
1736 | char *new_name; | |
252b5132 | 1737 | |
e948afaf | 1738 | /* If there's nothing to do in this section, skip it. */ |
eb13e63f DD |
1739 | if (! ((section->flags & SEC_RELOC) != 0 |
1740 | && section->reloc_count != 0)) | |
1741 | continue; | |
1742 | if ((section->flags & SEC_ALLOC) == 0) | |
e948afaf AO |
1743 | continue; |
1744 | ||
252b5132 RH |
1745 | /* Get cached copy of section contents if it exists. */ |
1746 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
1747 | contents = elf_section_data (section)->this_hdr.contents; | |
eea6121a | 1748 | else if (section->size != 0) |
252b5132 RH |
1749 | { |
1750 | /* Go get them off disk. */ | |
eea6121a AM |
1751 | if (!bfd_malloc_and_get_section (input_bfd, section, |
1752 | &contents)) | |
252b5132 RH |
1753 | goto error_return; |
1754 | } | |
1755 | else | |
6cdc0ccc | 1756 | contents = NULL; |
252b5132 RH |
1757 | |
1758 | /* If there aren't any relocs, then there's nothing to do. */ | |
1759 | if ((section->flags & SEC_RELOC) != 0 | |
1760 | && section->reloc_count != 0) | |
1761 | { | |
1762 | ||
1763 | /* Get a copy of the native relocations. */ | |
45d6a902 | 1764 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
1765 | (input_bfd, section, (PTR) NULL, |
1766 | (Elf_Internal_Rela *) NULL, | |
1767 | link_info->keep_memory)); | |
1768 | if (internal_relocs == NULL) | |
1769 | goto error_return; | |
252b5132 RH |
1770 | |
1771 | /* Now examine each relocation. */ | |
1772 | irel = internal_relocs; | |
1773 | irelend = irel + section->reloc_count; | |
1774 | for (; irel < irelend; irel++) | |
1775 | { | |
1776 | long r_type; | |
1777 | unsigned long r_index; | |
1778 | unsigned char code; | |
1779 | ||
1780 | r_type = ELF32_R_TYPE (irel->r_info); | |
1781 | r_index = ELF32_R_SYM (irel->r_info); | |
1782 | ||
010ac81f | 1783 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
1784 | goto error_return; |
1785 | ||
1786 | /* We need the name and hash table entry of the target | |
1787 | symbol! */ | |
1788 | hash = NULL; | |
1789 | sym = NULL; | |
1790 | sym_sec = NULL; | |
1791 | ||
1792 | if (r_index < symtab_hdr->sh_info) | |
1793 | { | |
1794 | /* A local symbol. */ | |
6cdc0ccc | 1795 | Elf_Internal_Sym *isym; |
dc810e39 AM |
1796 | struct elf_link_hash_table *elftab; |
1797 | bfd_size_type amt; | |
252b5132 | 1798 | |
6cdc0ccc AM |
1799 | isym = isymbuf + r_index; |
1800 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 1801 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 1802 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 1803 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 1804 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 1805 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
1806 | else |
1807 | sym_sec | |
1808 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 1809 | isym->st_shndx); |
a7c10850 | 1810 | |
9ad5cbcf AM |
1811 | sym_name |
1812 | = bfd_elf_string_from_elf_section (input_bfd, | |
1813 | (symtab_hdr | |
1814 | ->sh_link), | |
6cdc0ccc | 1815 | isym->st_name); |
252b5132 RH |
1816 | |
1817 | /* If it isn't a function, then we don't care | |
1818 | about it. */ | |
6cdc0ccc | 1819 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
1820 | continue; |
1821 | ||
1822 | /* Tack on an ID so we can uniquely identify this | |
1823 | local symbol in the global hash table. */ | |
dc810e39 AM |
1824 | amt = strlen (sym_name) + 10; |
1825 | new_name = bfd_malloc (amt); | |
252b5132 RH |
1826 | if (new_name == 0) |
1827 | goto error_return; | |
1828 | ||
f60ca5e3 | 1829 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
1830 | sym_name = new_name; |
1831 | ||
dc810e39 AM |
1832 | elftab = &hash_table->static_hash_table->root; |
1833 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
1834 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 1835 | TRUE, TRUE, FALSE)); |
252b5132 RH |
1836 | free (new_name); |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | r_index -= symtab_hdr->sh_info; | |
1841 | hash = (struct elf32_mn10300_link_hash_entry *) | |
1842 | elf_sym_hashes (input_bfd)[r_index]; | |
1843 | } | |
1844 | ||
eb13e63f DD |
1845 | sym_name = hash->root.root.root.string; |
1846 | if ((section->flags & SEC_CODE) != 0) | |
1847 | { | |
1848 | /* If this is not a "call" instruction, then we | |
1849 | should convert "call" instructions to "calls" | |
1850 | instructions. */ | |
1851 | code = bfd_get_8 (input_bfd, | |
1852 | contents + irel->r_offset - 1); | |
1853 | if (code != 0xdd && code != 0xcd) | |
1854 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1855 | } | |
252b5132 | 1856 | |
6cdc0ccc AM |
1857 | /* If this is a jump/call, then bump the |
1858 | direct_calls counter. Else force "call" to | |
1859 | "calls" conversions. */ | |
252b5132 | 1860 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
1861 | || r_type == R_MN10300_PLT32 |
1862 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
1863 | || r_type == R_MN10300_PCREL16) |
1864 | hash->direct_calls++; | |
1865 | else | |
1866 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | /* Now look at the actual contents to get the stack size, | |
1871 | and a list of what registers were saved in the prologue | |
1872 | (ie movm_args). */ | |
1873 | if ((section->flags & SEC_CODE) != 0) | |
1874 | { | |
6cdc0ccc | 1875 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 1876 | unsigned int sec_shndx; |
6cdc0ccc AM |
1877 | struct elf_link_hash_entry **hashes; |
1878 | struct elf_link_hash_entry **end_hashes; | |
1879 | unsigned int symcount; | |
252b5132 | 1880 | |
9ad5cbcf AM |
1881 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
1882 | section); | |
252b5132 | 1883 | |
1055df0f AO |
1884 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
1885 | - symtab_hdr->sh_info); | |
1886 | hashes = elf_sym_hashes (input_bfd); | |
1887 | end_hashes = hashes + symcount; | |
1888 | ||
252b5132 RH |
1889 | /* Look at each function defined in this section and |
1890 | update info for that function. */ | |
6cdc0ccc AM |
1891 | isymend = isymbuf + symtab_hdr->sh_info; |
1892 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 1893 | { |
6cdc0ccc AM |
1894 | if (isym->st_shndx == sec_shndx |
1895 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 1896 | { |
dc810e39 AM |
1897 | struct elf_link_hash_table *elftab; |
1898 | bfd_size_type amt; | |
1055df0f AO |
1899 | struct elf_link_hash_entry **lhashes = hashes; |
1900 | ||
1901 | /* Skip a local symbol if it aliases a | |
1902 | global one. */ | |
1903 | for (; lhashes < end_hashes; lhashes++) | |
1904 | { | |
1905 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; | |
1906 | if ((hash->root.root.type == bfd_link_hash_defined | |
1907 | || hash->root.root.type == bfd_link_hash_defweak) | |
1908 | && hash->root.root.u.def.section == section | |
1909 | && hash->root.type == STT_FUNC | |
1910 | && hash->root.root.u.def.value == isym->st_value) | |
1911 | break; | |
1912 | } | |
1913 | if (lhashes != end_hashes) | |
1914 | continue; | |
dc810e39 | 1915 | |
6cdc0ccc | 1916 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 1917 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 1918 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 1919 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 1920 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 1921 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
1922 | else |
1923 | sym_sec | |
1924 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 1925 | isym->st_shndx); |
252b5132 | 1926 | |
dc810e39 AM |
1927 | sym_name = (bfd_elf_string_from_elf_section |
1928 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 1929 | isym->st_name)); |
252b5132 RH |
1930 | |
1931 | /* Tack on an ID so we can uniquely identify this | |
1932 | local symbol in the global hash table. */ | |
dc810e39 AM |
1933 | amt = strlen (sym_name) + 10; |
1934 | new_name = bfd_malloc (amt); | |
252b5132 RH |
1935 | if (new_name == 0) |
1936 | goto error_return; | |
1937 | ||
f60ca5e3 | 1938 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
1939 | sym_name = new_name; |
1940 | ||
dc810e39 AM |
1941 | elftab = &hash_table->static_hash_table->root; |
1942 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
1943 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 1944 | TRUE, TRUE, FALSE)); |
252b5132 RH |
1945 | free (new_name); |
1946 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 1947 | isym->st_value, contents); |
eb13e63f | 1948 | hash->value = isym->st_value; |
252b5132 RH |
1949 | } |
1950 | } | |
1951 | ||
6cdc0ccc | 1952 | for (; hashes < end_hashes; hashes++) |
252b5132 | 1953 | { |
6cdc0ccc | 1954 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
1955 | if ((hash->root.root.type == bfd_link_hash_defined |
1956 | || hash->root.root.type == bfd_link_hash_defweak) | |
1957 | && hash->root.root.u.def.section == section | |
9bb351fd | 1958 | && hash->root.type == STT_FUNC) |
252b5132 RH |
1959 | compute_function_info (input_bfd, hash, |
1960 | (hash)->root.root.u.def.value, | |
1961 | contents); | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
1966 | if (internal_relocs != NULL |
1967 | && elf_section_data (section)->relocs != internal_relocs) | |
1968 | free (internal_relocs); | |
1969 | internal_relocs = NULL; | |
252b5132 RH |
1970 | |
1971 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
1972 | if (contents != NULL |
1973 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
1974 | { |
1975 | if (! link_info->keep_memory) | |
6cdc0ccc | 1976 | free (contents); |
252b5132 RH |
1977 | else |
1978 | { | |
1979 | /* Cache the section contents for elf_link_input_bfd. */ | |
1980 | elf_section_data (section)->this_hdr.contents = contents; | |
1981 | } | |
252b5132 | 1982 | } |
6cdc0ccc | 1983 | contents = NULL; |
9ad5cbcf AM |
1984 | } |
1985 | ||
252b5132 | 1986 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
1987 | if (isymbuf != NULL |
1988 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
1989 | { |
1990 | if (! link_info->keep_memory) | |
6cdc0ccc | 1991 | free (isymbuf); |
252b5132 RH |
1992 | else |
1993 | { | |
1994 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 1995 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 1996 | } |
252b5132 | 1997 | } |
6cdc0ccc | 1998 | isymbuf = NULL; |
252b5132 RH |
1999 | } |
2000 | ||
2001 | /* Now iterate on each symbol in the hash table and perform | |
2002 | the final initialization steps on each. */ | |
2003 | elf32_mn10300_link_hash_traverse (hash_table, | |
2004 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2005 | link_info); |
252b5132 RH |
2006 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2007 | elf32_mn10300_finish_hash_table_entry, | |
1055df0f | 2008 | link_info); |
252b5132 | 2009 | |
eb13e63f DD |
2010 | { |
2011 | /* This section of code collects all our local symbols, sorts | |
2012 | them by value, and looks for multiple symbols referring to | |
2013 | the same address. For those symbols, the flags are merged. | |
2014 | At this point, the only flag that can be set is | |
2015 | MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags | |
2016 | together. */ | |
2017 | int static_count = 0, i; | |
2018 | struct elf32_mn10300_link_hash_entry **entries; | |
2019 | struct elf32_mn10300_link_hash_entry **ptr; | |
2020 | ||
2021 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2022 | elf32_mn10300_count_hash_table_entries, | |
2023 | &static_count); | |
2024 | ||
2025 | entries = (struct elf32_mn10300_link_hash_entry **) | |
2026 | bfd_malloc (static_count * sizeof (struct elf32_mn10300_link_hash_entry *)); | |
2027 | ||
2028 | ptr = entries; | |
2029 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2030 | elf32_mn10300_list_hash_table_entries, | |
2031 | &ptr); | |
2032 | ||
2033 | qsort (entries, static_count, sizeof(entries[0]), sort_by_value); | |
2034 | ||
2035 | for (i=0; i<static_count-1; i++) | |
2036 | if (entries[i]->value && entries[i]->value == entries[i+1]->value) | |
2037 | { | |
2038 | int v = entries[i]->flags; | |
2039 | int j; | |
2040 | for (j=i+1; j<static_count && entries[j]->value == entries[i]->value; j++) | |
2041 | v |= entries[j]->flags; | |
2042 | for (j=i; j<static_count && entries[j]->value == entries[i]->value; j++) | |
2043 | entries[j]->flags = v; | |
2044 | i = j-1; | |
2045 | } | |
2046 | } | |
2047 | ||
252b5132 RH |
2048 | /* All entries in the hash table are fully initialized. */ |
2049 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
2050 | ||
2051 | /* Now that everything has been initialized, go through each | |
2052 | code section and delete any prologue insns which will be | |
2053 | redundant because their operations will be performed by | |
2054 | a "call" instruction. */ | |
2055 | for (input_bfd = link_info->input_bfds; | |
2056 | input_bfd != NULL; | |
2057 | input_bfd = input_bfd->link_next) | |
2058 | { | |
9ad5cbcf | 2059 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 2060 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 2061 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2062 | { |
6cdc0ccc AM |
2063 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2064 | if (isymbuf == NULL) | |
2065 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2066 | symtab_hdr->sh_info, 0, | |
2067 | NULL, NULL, NULL); | |
2068 | if (isymbuf == NULL) | |
9ad5cbcf | 2069 | goto error_return; |
010ac81f | 2070 | } |
252b5132 RH |
2071 | |
2072 | /* Walk over each section in this bfd. */ | |
2073 | for (section = input_bfd->sections; | |
2074 | section != NULL; | |
2075 | section = section->next) | |
2076 | { | |
9ad5cbcf | 2077 | unsigned int sec_shndx; |
6cdc0ccc AM |
2078 | Elf_Internal_Sym *isym, *isymend; |
2079 | struct elf_link_hash_entry **hashes; | |
2080 | struct elf_link_hash_entry **end_hashes; | |
2081 | unsigned int symcount; | |
252b5132 RH |
2082 | |
2083 | /* Skip non-code sections and empty sections. */ | |
eea6121a | 2084 | if ((section->flags & SEC_CODE) == 0 || section->size == 0) |
252b5132 RH |
2085 | continue; |
2086 | ||
2087 | if (section->reloc_count != 0) | |
2088 | { | |
010ac81f | 2089 | /* Get a copy of the native relocations. */ |
45d6a902 | 2090 | internal_relocs = (_bfd_elf_link_read_relocs |
010ac81f KH |
2091 | (input_bfd, section, (PTR) NULL, |
2092 | (Elf_Internal_Rela *) NULL, | |
2093 | link_info->keep_memory)); | |
2094 | if (internal_relocs == NULL) | |
2095 | goto error_return; | |
252b5132 RH |
2096 | } |
2097 | ||
2098 | /* Get cached copy of section contents if it exists. */ | |
2099 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2100 | contents = elf_section_data (section)->this_hdr.contents; | |
2101 | else | |
2102 | { | |
2103 | /* Go get them off disk. */ | |
eea6121a AM |
2104 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2105 | &contents)) | |
252b5132 RH |
2106 | goto error_return; |
2107 | } | |
2108 | ||
9ad5cbcf AM |
2109 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2110 | section); | |
252b5132 RH |
2111 | |
2112 | /* Now look for any function in this section which needs | |
2113 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
2114 | isymend = isymbuf + symtab_hdr->sh_info; |
2115 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2116 | { |
252b5132 | 2117 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 2118 | asection *sym_sec = NULL; |
252b5132 | 2119 | const char *sym_name; |
252b5132 | 2120 | char *new_name; |
dc810e39 AM |
2121 | struct elf_link_hash_table *elftab; |
2122 | bfd_size_type amt; | |
252b5132 | 2123 | |
6cdc0ccc | 2124 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
2125 | continue; |
2126 | ||
6cdc0ccc | 2127 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2128 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2129 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2130 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2131 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2132 | sym_sec = bfd_com_section_ptr; |
86033394 | 2133 | else |
9ad5cbcf | 2134 | sym_sec |
6cdc0ccc | 2135 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 2136 | |
9ad5cbcf AM |
2137 | sym_name |
2138 | = bfd_elf_string_from_elf_section (input_bfd, | |
2139 | symtab_hdr->sh_link, | |
6cdc0ccc | 2140 | isym->st_name); |
252b5132 RH |
2141 | |
2142 | /* Tack on an ID so we can uniquely identify this | |
2143 | local symbol in the global hash table. */ | |
dc810e39 AM |
2144 | amt = strlen (sym_name) + 10; |
2145 | new_name = bfd_malloc (amt); | |
252b5132 RH |
2146 | if (new_name == 0) |
2147 | goto error_return; | |
f60ca5e3 | 2148 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2149 | sym_name = new_name; |
2150 | ||
dc810e39 AM |
2151 | elftab = &hash_table->static_hash_table->root; |
2152 | sym_hash = ((struct elf32_mn10300_link_hash_entry *) | |
2153 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2154 | FALSE, FALSE, FALSE)); |
252b5132 RH |
2155 | |
2156 | free (new_name); | |
2157 | if (sym_hash == NULL) | |
2158 | continue; | |
2159 | ||
9ad5cbcf AM |
2160 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
2161 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2162 | { |
2163 | int bytes = 0; | |
2164 | ||
2165 | /* Note that we've changed things. */ | |
2166 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2167 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2168 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2169 | |
2170 | /* Count how many bytes we're going to delete. */ | |
2171 | if (sym_hash->movm_args) | |
2172 | bytes += 2; | |
2173 | ||
1a101a42 AM |
2174 | if (sym_hash->stack_size > 0) |
2175 | { | |
2176 | if (sym_hash->stack_size <= 128) | |
2177 | bytes += 3; | |
2178 | else | |
2179 | bytes += 4; | |
2180 | } | |
252b5132 RH |
2181 | |
2182 | /* Note that we've deleted prologue bytes for this | |
2183 | function. */ | |
2184 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2185 | ||
2186 | /* Actually delete the bytes. */ | |
2187 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
2188 | section, | |
6cdc0ccc | 2189 | isym->st_value, |
252b5132 RH |
2190 | bytes)) |
2191 | goto error_return; | |
2192 | ||
2193 | /* Something changed. Not strictly necessary, but | |
2194 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2195 | *again = TRUE; |
252b5132 RH |
2196 | } |
2197 | } | |
2198 | ||
2199 | /* Look for any global functions in this section which | |
2200 | need insns deleted from their prologues. */ | |
6cdc0ccc | 2201 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 2202 | - symtab_hdr->sh_info); |
709e685d | 2203 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2204 | end_hashes = hashes + symcount; |
2205 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2206 | { |
252b5132 RH |
2207 | struct elf32_mn10300_link_hash_entry *sym_hash; |
2208 | ||
6cdc0ccc | 2209 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2210 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
2211 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
2212 | && sym_hash->root.root.u.def.section == section | |
2213 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
2214 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2215 | { |
2216 | int bytes = 0; | |
9ad5cbcf | 2217 | bfd_vma symval; |
252b5132 RH |
2218 | |
2219 | /* Note that we've changed things. */ | |
2220 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2221 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2222 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2223 | |
2224 | /* Count how many bytes we're going to delete. */ | |
2225 | if (sym_hash->movm_args) | |
2226 | bytes += 2; | |
2227 | ||
1a101a42 AM |
2228 | if (sym_hash->stack_size > 0) |
2229 | { | |
2230 | if (sym_hash->stack_size <= 128) | |
2231 | bytes += 3; | |
2232 | else | |
2233 | bytes += 4; | |
2234 | } | |
252b5132 RH |
2235 | |
2236 | /* Note that we've deleted prologue bytes for this | |
2237 | function. */ | |
2238 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2239 | ||
2240 | /* Actually delete the bytes. */ | |
9ad5cbcf | 2241 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
2242 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
2243 | section, | |
9ad5cbcf | 2244 | symval, |
252b5132 RH |
2245 | bytes)) |
2246 | goto error_return; | |
2247 | ||
2248 | /* Something changed. Not strictly necessary, but | |
2249 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2250 | *again = TRUE; |
252b5132 RH |
2251 | } |
2252 | } | |
2253 | ||
2254 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2255 | if (internal_relocs != NULL |
2256 | && elf_section_data (section)->relocs != internal_relocs) | |
2257 | free (internal_relocs); | |
2258 | internal_relocs = NULL; | |
252b5132 RH |
2259 | |
2260 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2261 | if (contents != NULL |
2262 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2263 | { |
2264 | if (! link_info->keep_memory) | |
6cdc0ccc | 2265 | free (contents); |
252b5132 RH |
2266 | else |
2267 | { | |
2268 | /* Cache the section contents for elf_link_input_bfd. */ | |
2269 | elf_section_data (section)->this_hdr.contents = contents; | |
2270 | } | |
252b5132 | 2271 | } |
6cdc0ccc | 2272 | contents = NULL; |
9ad5cbcf AM |
2273 | } |
2274 | ||
252b5132 | 2275 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2276 | if (isymbuf != NULL |
2277 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2278 | { |
2279 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
2280 | free (isymbuf); |
2281 | else | |
252b5132 | 2282 | { |
6cdc0ccc AM |
2283 | /* Cache the symbols for elf_link_input_bfd. */ |
2284 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 2285 | } |
252b5132 | 2286 | } |
6cdc0ccc | 2287 | isymbuf = NULL; |
252b5132 RH |
2288 | } |
2289 | } | |
2290 | ||
252b5132 RH |
2291 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
2292 | contents = NULL; | |
252b5132 | 2293 | internal_relocs = NULL; |
6cdc0ccc AM |
2294 | isymbuf = NULL; |
2295 | /* For error_return. */ | |
2296 | section = sec; | |
252b5132 | 2297 | |
1049f94e | 2298 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
2299 | this section does not have relocs, or if this is not a |
2300 | code section. */ | |
1049f94e | 2301 | if (link_info->relocatable |
252b5132 RH |
2302 | || (sec->flags & SEC_RELOC) == 0 |
2303 | || sec->reloc_count == 0 | |
2304 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 2305 | return TRUE; |
252b5132 | 2306 | |
252b5132 RH |
2307 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2308 | ||
2309 | /* Get a copy of the native relocations. */ | |
45d6a902 | 2310 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
2311 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2312 | link_info->keep_memory)); | |
2313 | if (internal_relocs == NULL) | |
2314 | goto error_return; | |
252b5132 RH |
2315 | |
2316 | /* Walk through them looking for relaxing opportunities. */ | |
2317 | irelend = internal_relocs + sec->reloc_count; | |
2318 | for (irel = internal_relocs; irel < irelend; irel++) | |
2319 | { | |
2320 | bfd_vma symval; | |
2321 | struct elf32_mn10300_link_hash_entry *h = NULL; | |
2322 | ||
2323 | /* If this isn't something that can be relaxed, then ignore | |
2324 | this reloc. */ | |
2325 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
2326 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
2327 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
2328 | continue; | |
2329 | ||
2330 | /* Get the section contents if we haven't done so already. */ | |
2331 | if (contents == NULL) | |
2332 | { | |
2333 | /* Get cached copy if it exists. */ | |
2334 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2335 | contents = elf_section_data (sec)->this_hdr.contents; | |
2336 | else | |
2337 | { | |
2338 | /* Go get them off disk. */ | |
eea6121a | 2339 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2340 | goto error_return; |
2341 | } | |
2342 | } | |
2343 | ||
b34976b6 | 2344 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 2345 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 2346 | { |
6cdc0ccc AM |
2347 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2348 | if (isymbuf == NULL) | |
2349 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2350 | symtab_hdr->sh_info, 0, | |
2351 | NULL, NULL, NULL); | |
2352 | if (isymbuf == NULL) | |
2353 | goto error_return; | |
252b5132 RH |
2354 | } |
2355 | ||
2356 | /* Get the value of the symbol referred to by the reloc. */ | |
2357 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2358 | { | |
6cdc0ccc | 2359 | Elf_Internal_Sym *isym; |
86033394 | 2360 | asection *sym_sec = NULL; |
252b5132 RH |
2361 | const char *sym_name; |
2362 | char *new_name; | |
dd90f1b2 | 2363 | bfd_vma saved_addend; |
252b5132 RH |
2364 | |
2365 | /* A local symbol. */ | |
6cdc0ccc AM |
2366 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2367 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2368 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2369 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2370 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2371 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2372 | sym_sec = bfd_com_section_ptr; |
86033394 | 2373 | else |
6cdc0ccc | 2374 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 2375 | |
252b5132 RH |
2376 | sym_name = bfd_elf_string_from_elf_section (abfd, |
2377 | symtab_hdr->sh_link, | |
6cdc0ccc | 2378 | isym->st_name); |
252b5132 | 2379 | |
dd90f1b2 DD |
2380 | if ((sym_sec->flags & SEC_MERGE) |
2381 | && ELF_ST_TYPE (isym->st_info) == STT_SECTION | |
2382 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
2383 | { | |
2384 | saved_addend = irel->r_addend; | |
2385 | symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel); | |
2386 | symval += irel->r_addend; | |
2387 | irel->r_addend = saved_addend; | |
2388 | } | |
2389 | else | |
2390 | { | |
2391 | symval = (isym->st_value | |
2392 | + sym_sec->output_section->vma | |
2393 | + sym_sec->output_offset); | |
2394 | } | |
252b5132 RH |
2395 | /* Tack on an ID so we can uniquely identify this |
2396 | local symbol in the global hash table. */ | |
dc810e39 | 2397 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
252b5132 RH |
2398 | if (new_name == 0) |
2399 | goto error_return; | |
f60ca5e3 | 2400 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
252b5132 RH |
2401 | sym_name = new_name; |
2402 | ||
2403 | h = (struct elf32_mn10300_link_hash_entry *) | |
2404 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 2405 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
2406 | free (new_name); |
2407 | } | |
2408 | else | |
2409 | { | |
2410 | unsigned long indx; | |
2411 | ||
2412 | /* An external symbol. */ | |
2413 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2414 | h = (struct elf32_mn10300_link_hash_entry *) | |
2415 | (elf_sym_hashes (abfd)[indx]); | |
2416 | BFD_ASSERT (h != NULL); | |
2417 | if (h->root.root.type != bfd_link_hash_defined | |
2418 | && h->root.root.type != bfd_link_hash_defweak) | |
2419 | { | |
2420 | /* This appears to be a reference to an undefined | |
2421 | symbol. Just ignore it--it will be caught by the | |
2422 | regular reloc processing. */ | |
2423 | continue; | |
2424 | } | |
2425 | ||
2426 | symval = (h->root.root.u.def.value | |
2427 | + h->root.root.u.def.section->output_section->vma | |
2428 | + h->root.root.u.def.section->output_offset); | |
2429 | } | |
2430 | ||
2431 | /* For simplicity of coding, we are going to modify the section | |
2432 | contents, the section relocs, and the BFD symbol table. We | |
2433 | must tell the rest of the code not to free up this | |
2434 | information. It would be possible to instead create a table | |
2435 | of changes which have to be made, as is done in coff-mips.c; | |
2436 | that would be more work, but would require less memory when | |
2437 | the linker is run. */ | |
2438 | ||
2439 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
2440 | branch/call, also deal with "call" -> "calls" conversions and | |
2441 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
2442 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
2443 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
2444 | { |
2445 | bfd_vma value = symval; | |
2446 | ||
03a12831 AO |
2447 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
2448 | && h != NULL | |
2449 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2450 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2451 | && h->root.plt.offset != (bfd_vma) -1) | |
2452 | { | |
2453 | asection * splt; | |
2454 | ||
2455 | splt = bfd_get_section_by_name (elf_hash_table (link_info) | |
2456 | ->dynobj, ".plt"); | |
3b36f7e6 | 2457 | |
03a12831 AO |
2458 | value = ((splt->output_section->vma |
2459 | + splt->output_offset | |
2460 | + h->root.plt.offset) | |
2461 | - (sec->output_section->vma | |
2462 | + sec->output_offset | |
2463 | + irel->r_offset)); | |
2464 | } | |
2465 | ||
252b5132 RH |
2466 | /* If we've got a "call" instruction that needs to be turned |
2467 | into a "calls" instruction, do so now. It saves a byte. */ | |
2468 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2469 | { | |
2470 | unsigned char code; | |
2471 | ||
2472 | /* Get the opcode. */ | |
2473 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2474 | ||
2475 | /* Make sure we're working with a "call" instruction! */ | |
2476 | if (code == 0xdd) | |
2477 | { | |
2478 | /* Note that we've changed the relocs, section contents, | |
2479 | etc. */ | |
2480 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2481 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2482 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2483 | |
2484 | /* Fix the opcode. */ | |
2485 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
2486 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2487 | ||
2488 | /* Fix irel->r_offset and irel->r_addend. */ | |
2489 | irel->r_offset += 1; | |
2490 | irel->r_addend += 1; | |
2491 | ||
2492 | /* Delete one byte of data. */ | |
2493 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2494 | irel->r_offset + 3, 1)) | |
2495 | goto error_return; | |
2496 | ||
2497 | /* That will change things, so, we should relax again. | |
2498 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2499 | *again = TRUE; |
252b5132 RH |
2500 | } |
2501 | } | |
2502 | else if (h) | |
2503 | { | |
2504 | /* We've got a "call" instruction which needs some data | |
2505 | from target function filled in. */ | |
2506 | unsigned char code; | |
2507 | ||
2508 | /* Get the opcode. */ | |
2509 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2510 | ||
2511 | /* Insert data from the target function into the "call" | |
2512 | instruction if needed. */ | |
2513 | if (code == 0xdd) | |
2514 | { | |
2515 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
2516 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2517 | contents + irel->r_offset + 5); | |
2518 | } | |
2519 | } | |
2520 | ||
2521 | /* Deal with pc-relative gunk. */ | |
2522 | value -= (sec->output_section->vma + sec->output_offset); | |
2523 | value -= irel->r_offset; | |
2524 | value += irel->r_addend; | |
2525 | ||
2526 | /* See if the value will fit in 16 bits, note the high value is | |
2527 | 0x7fff + 2 as the target will be two bytes closer if we are | |
2528 | able to relax. */ | |
010ac81f | 2529 | if ((long) value < 0x8001 && (long) value > -0x8000) |
252b5132 RH |
2530 | { |
2531 | unsigned char code; | |
2532 | ||
2533 | /* Get the opcode. */ | |
2534 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2535 | ||
2536 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
2537 | continue; | |
2538 | ||
2539 | /* Note that we've changed the relocs, section contents, etc. */ | |
2540 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2541 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2542 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2543 | |
2544 | /* Fix the opcode. */ | |
2545 | if (code == 0xdc) | |
2546 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
2547 | else if (code == 0xdd) | |
2548 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
2549 | else if (code == 0xff) | |
2550 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2551 | ||
2552 | /* Fix the relocation's type. */ | |
2553 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2554 | (ELF32_R_TYPE (irel->r_info) |
2555 | == (int) R_MN10300_PLT32) | |
2556 | ? R_MN10300_PLT16 : | |
252b5132 RH |
2557 | R_MN10300_PCREL16); |
2558 | ||
2559 | /* Delete two bytes of data. */ | |
2560 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2561 | irel->r_offset + 1, 2)) | |
2562 | goto error_return; | |
2563 | ||
2564 | /* That will change things, so, we should relax again. | |
2565 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2566 | *again = TRUE; |
252b5132 RH |
2567 | } |
2568 | } | |
2569 | ||
2570 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
2571 | branch. */ | |
2572 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
2573 | { | |
2574 | bfd_vma value = symval; | |
2575 | ||
2576 | /* If we've got a "call" instruction that needs to be turned | |
2577 | into a "calls" instruction, do so now. It saves a byte. */ | |
2578 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2579 | { | |
2580 | unsigned char code; | |
2581 | ||
2582 | /* Get the opcode. */ | |
2583 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2584 | ||
2585 | /* Make sure we're working with a "call" instruction! */ | |
2586 | if (code == 0xcd) | |
2587 | { | |
2588 | /* Note that we've changed the relocs, section contents, | |
2589 | etc. */ | |
2590 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2591 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2592 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2593 | |
2594 | /* Fix the opcode. */ | |
2595 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
2596 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2597 | ||
2598 | /* Fix irel->r_offset and irel->r_addend. */ | |
2599 | irel->r_offset += 1; | |
2600 | irel->r_addend += 1; | |
2601 | ||
2602 | /* Delete one byte of data. */ | |
2603 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2604 | irel->r_offset + 1, 1)) | |
2605 | goto error_return; | |
2606 | ||
2607 | /* That will change things, so, we should relax again. | |
2608 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2609 | *again = TRUE; |
252b5132 RH |
2610 | } |
2611 | } | |
2612 | else if (h) | |
2613 | { | |
2614 | unsigned char code; | |
2615 | ||
2616 | /* Get the opcode. */ | |
2617 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2618 | ||
2619 | /* Insert data from the target function into the "call" | |
2620 | instruction if needed. */ | |
2621 | if (code == 0xcd) | |
2622 | { | |
2623 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
2624 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2625 | contents + irel->r_offset + 3); | |
2626 | } | |
2627 | } | |
2628 | ||
2629 | /* Deal with pc-relative gunk. */ | |
2630 | value -= (sec->output_section->vma + sec->output_offset); | |
2631 | value -= irel->r_offset; | |
2632 | value += irel->r_addend; | |
2633 | ||
2634 | /* See if the value will fit in 8 bits, note the high value is | |
2635 | 0x7f + 1 as the target will be one bytes closer if we are | |
2636 | able to relax. */ | |
010ac81f | 2637 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
2638 | { |
2639 | unsigned char code; | |
2640 | ||
2641 | /* Get the opcode. */ | |
2642 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2643 | ||
2644 | if (code != 0xcc) | |
2645 | continue; | |
2646 | ||
2647 | /* Note that we've changed the relocs, section contents, etc. */ | |
2648 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2649 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2650 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2651 | |
2652 | /* Fix the opcode. */ | |
2653 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
2654 | ||
2655 | /* Fix the relocation's type. */ | |
2656 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2657 | R_MN10300_PCREL8); | |
2658 | ||
2659 | /* Delete one byte of data. */ | |
2660 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2661 | irel->r_offset + 1, 1)) | |
2662 | goto error_return; | |
2663 | ||
2664 | /* That will change things, so, we should relax again. | |
2665 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2666 | *again = TRUE; |
252b5132 RH |
2667 | } |
2668 | } | |
2669 | ||
2670 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
2671 | which immediately follows a conditional 8 bit pc-relative | |
2672 | branch around the unconditional branch. | |
2673 | ||
2674 | original: new: | |
2675 | bCC lab1 bCC' lab2 | |
2676 | bra lab2 | |
2677 | lab1: lab1: | |
2678 | ||
252b5132 RH |
2679 | This happens when the bCC can't reach lab2 at assembly time, |
2680 | but due to other relaxations it can reach at link time. */ | |
2681 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
2682 | { | |
2683 | Elf_Internal_Rela *nrel; | |
2684 | bfd_vma value = symval; | |
2685 | unsigned char code; | |
2686 | ||
2687 | /* Deal with pc-relative gunk. */ | |
2688 | value -= (sec->output_section->vma + sec->output_offset); | |
2689 | value -= irel->r_offset; | |
2690 | value += irel->r_addend; | |
2691 | ||
2692 | /* Do nothing if this reloc is the last byte in the section. */ | |
eea6121a | 2693 | if (irel->r_offset == sec->size) |
252b5132 RH |
2694 | continue; |
2695 | ||
2696 | /* See if the next instruction is an unconditional pc-relative | |
2697 | branch, more often than not this test will fail, so we | |
2698 | test it first to speed things up. */ | |
2699 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
2700 | if (code != 0xca) | |
2701 | continue; | |
2702 | ||
2703 | /* Also make sure the next relocation applies to the next | |
2704 | instruction and that it's a pc-relative 8 bit branch. */ | |
2705 | nrel = irel + 1; | |
2706 | if (nrel == irelend | |
2707 | || irel->r_offset + 2 != nrel->r_offset | |
2708 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
2709 | continue; | |
2710 | ||
2711 | /* Make sure our destination immediately follows the | |
2712 | unconditional branch. */ | |
2713 | if (symval != (sec->output_section->vma + sec->output_offset | |
2714 | + irel->r_offset + 3)) | |
2715 | continue; | |
2716 | ||
2717 | /* Now make sure we are a conditional branch. This may not | |
2718 | be necessary, but why take the chance. | |
2719 | ||
2720 | Note these checks assume that R_MN10300_PCREL8 relocs | |
2721 | only occur on bCC and bCCx insns. If they occured | |
2722 | elsewhere, we'd need to know the start of this insn | |
2723 | for this check to be accurate. */ | |
2724 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2725 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
2726 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
2727 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
2728 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
2729 | && code != 0xea && code != 0xeb) | |
2730 | continue; | |
2731 | ||
2732 | /* We also have to be sure there is no symbol/label | |
2733 | at the unconditional branch. */ | |
6cdc0ccc AM |
2734 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
2735 | irel->r_offset + 1)) | |
252b5132 RH |
2736 | continue; |
2737 | ||
2738 | /* Note that we've changed the relocs, section contents, etc. */ | |
2739 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2740 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2741 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2742 | |
2743 | /* Reverse the condition of the first branch. */ | |
2744 | switch (code) | |
2745 | { | |
010ac81f KH |
2746 | case 0xc8: |
2747 | code = 0xc9; | |
2748 | break; | |
2749 | case 0xc9: | |
2750 | code = 0xc8; | |
2751 | break; | |
2752 | case 0xc0: | |
2753 | code = 0xc2; | |
2754 | break; | |
2755 | case 0xc2: | |
2756 | code = 0xc0; | |
2757 | break; | |
2758 | case 0xc3: | |
2759 | code = 0xc1; | |
2760 | break; | |
2761 | case 0xc1: | |
2762 | code = 0xc3; | |
2763 | break; | |
2764 | case 0xc4: | |
2765 | code = 0xc6; | |
2766 | break; | |
2767 | case 0xc6: | |
2768 | code = 0xc4; | |
2769 | break; | |
2770 | case 0xc7: | |
2771 | code = 0xc5; | |
2772 | break; | |
2773 | case 0xc5: | |
2774 | code = 0xc7; | |
2775 | break; | |
2776 | case 0xe8: | |
2777 | code = 0xe9; | |
2778 | break; | |
2779 | case 0x9d: | |
2780 | code = 0xe8; | |
2781 | break; | |
2782 | case 0xea: | |
2783 | code = 0xeb; | |
2784 | break; | |
2785 | case 0xeb: | |
2786 | code = 0xea; | |
2787 | break; | |
252b5132 RH |
2788 | } |
2789 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
2790 | ||
2791 | /* Set the reloc type and symbol for the first branch | |
2792 | from the second branch. */ | |
2793 | irel->r_info = nrel->r_info; | |
2794 | ||
2795 | /* Make the reloc for the second branch a null reloc. */ | |
2796 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
2797 | R_MN10300_NONE); | |
2798 | ||
2799 | /* Delete two bytes of data. */ | |
2800 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2801 | irel->r_offset + 1, 2)) | |
2802 | goto error_return; | |
2803 | ||
2804 | /* That will change things, so, we should relax again. | |
2805 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2806 | *again = TRUE; |
252b5132 RH |
2807 | } |
2808 | ||
31f8dc8f JL |
2809 | /* Try to turn a 24 immediate, displacement or absolute address |
2810 | into a 8 immediate, displacement or absolute address. */ | |
2811 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
2812 | { | |
2813 | bfd_vma value = symval; | |
2814 | value += irel->r_addend; | |
2815 | ||
2816 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 2817 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
2818 | { |
2819 | unsigned char code; | |
2820 | ||
2821 | /* AM33 insns which have 24 operands are 6 bytes long and | |
2822 | will have 0xfd as the first byte. */ | |
2823 | ||
2824 | /* Get the first opcode. */ | |
2825 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
2826 | ||
2827 | if (code == 0xfd) | |
2828 | { | |
010ac81f KH |
2829 | /* Get the second opcode. */ |
2830 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
2831 | |
2832 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
2833 | equivalent instructions exists. */ | |
3b36f7e6 | 2834 | if (code != 0x6b && code != 0x7b |
31f8dc8f JL |
2835 | && code != 0x8b && code != 0x9b |
2836 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
2837 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
2838 | || (code & 0x0f) == 0x0e)) | |
2839 | { | |
2840 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
2841 | move the value out of high mem and thus not fit |
2842 | in a signed 8bit value. This is currently over | |
2843 | conservative. */ | |
31f8dc8f JL |
2844 | if ((value & 0x80) == 0) |
2845 | { | |
2846 | /* Note that we've changed the relocation contents, | |
2847 | etc. */ | |
2848 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 2849 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2850 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
2851 | |
2852 | /* Fix the opcode. */ | |
2853 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
2854 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
2855 | ||
2856 | /* Fix the relocation's type. */ | |
010ac81f KH |
2857 | irel->r_info = |
2858 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2859 | R_MN10300_8); | |
31f8dc8f JL |
2860 | |
2861 | /* Delete two bytes of data. */ | |
2862 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2863 | irel->r_offset + 1, 2)) | |
2864 | goto error_return; | |
2865 | ||
2866 | /* That will change things, so, we should relax | |
2867 | again. Note that this is not required, and it | |
010ac81f | 2868 | may be slow. */ |
b34976b6 | 2869 | *again = TRUE; |
31f8dc8f JL |
2870 | break; |
2871 | } | |
2872 | } | |
31f8dc8f JL |
2873 | } |
2874 | } | |
2875 | } | |
252b5132 RH |
2876 | |
2877 | /* Try to turn a 32bit immediate, displacement or absolute address | |
2878 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
2879 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
2880 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
eb13e63f | 2881 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
252b5132 RH |
2882 | { |
2883 | bfd_vma value = symval; | |
03a12831 AO |
2884 | |
2885 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
2886 | { | |
2887 | asection * sgot; | |
2888 | ||
2889 | sgot = bfd_get_section_by_name (elf_hash_table (link_info) | |
2890 | ->dynobj, ".got"); | |
2891 | ||
2892 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) | |
2893 | { | |
2894 | value = sgot->output_offset; | |
2895 | ||
2896 | if (h) | |
2897 | value += h->root.got.offset; | |
2898 | else | |
2899 | value += (elf_local_got_offsets | |
2900 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
2901 | } | |
2902 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
2903 | value -= sgot->output_section->vma; | |
2904 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
2905 | value = (sgot->output_section->vma | |
2906 | - (sec->output_section->vma | |
2907 | + sec->output_offset | |
2908 | + irel->r_offset)); | |
2909 | else | |
2910 | abort (); | |
2911 | } | |
2912 | ||
252b5132 RH |
2913 | value += irel->r_addend; |
2914 | ||
31f8dc8f JL |
2915 | /* See if the value will fit in 24 bits. |
2916 | We allow any 16bit match here. We prune those we can't | |
2917 | handle below. */ | |
010ac81f | 2918 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
2919 | { |
2920 | unsigned char code; | |
2921 | ||
2922 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
2923 | will have 0xfe as the first byte. */ | |
2924 | ||
2925 | /* Get the first opcode. */ | |
2926 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
2927 | ||
2928 | if (code == 0xfe) | |
2929 | { | |
3b36f7e6 AM |
2930 | /* Get the second opcode. */ |
2931 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
2932 | |
2933 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
2934 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
2935 | equivalent instructions exists. */ | |
010ac81f | 2936 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 2937 | && code != 0x8b && code != 0x9b |
03a12831 AO |
2938 | && (ELF32_R_TYPE (irel->r_info) |
2939 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
2940 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
2941 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
2942 | || (code & 0x0f) == 0x0e)) | |
2943 | { | |
2944 | /* Not safe if the high bit is on as relaxing may | |
3b36f7e6 AM |
2945 | move the value out of high mem and thus not fit |
2946 | in a signed 16bit value. This is currently over | |
2947 | conservative. */ | |
31f8dc8f JL |
2948 | if ((value & 0x8000) == 0) |
2949 | { | |
2950 | /* Note that we've changed the relocation contents, | |
2951 | etc. */ | |
2952 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 2953 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2954 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
2955 | |
2956 | /* Fix the opcode. */ | |
2957 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
2958 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
2959 | ||
2960 | /* Fix the relocation's type. */ | |
010ac81f KH |
2961 | irel->r_info = |
2962 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2963 | (ELF32_R_TYPE (irel->r_info) |
2964 | == (int) R_MN10300_GOTOFF32) | |
2965 | ? R_MN10300_GOTOFF24 | |
2966 | : (ELF32_R_TYPE (irel->r_info) | |
2967 | == (int) R_MN10300_GOT32) | |
2968 | ? R_MN10300_GOT24 : | |
010ac81f | 2969 | R_MN10300_24); |
31f8dc8f JL |
2970 | |
2971 | /* Delete one byte of data. */ | |
2972 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2973 | irel->r_offset + 3, 1)) | |
2974 | goto error_return; | |
2975 | ||
2976 | /* That will change things, so, we should relax | |
2977 | again. Note that this is not required, and it | |
010ac81f | 2978 | may be slow. */ |
b34976b6 | 2979 | *again = TRUE; |
31f8dc8f JL |
2980 | break; |
2981 | } | |
2982 | } | |
31f8dc8f JL |
2983 | } |
2984 | } | |
252b5132 RH |
2985 | |
2986 | /* See if the value will fit in 16 bits. | |
2987 | We allow any 16bit match here. We prune those we can't | |
2988 | handle below. */ | |
010ac81f | 2989 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
2990 | { |
2991 | unsigned char code; | |
2992 | ||
2993 | /* Most insns which have 32bit operands are 6 bytes long; | |
2994 | exceptions are pcrel insns and bit insns. | |
2995 | ||
2996 | We handle pcrel insns above. We don't bother trying | |
2997 | to handle the bit insns here. | |
2998 | ||
2999 | The first byte of the remaining insns will be 0xfc. */ | |
3000 | ||
3001 | /* Get the first opcode. */ | |
3002 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
3003 | ||
3004 | if (code != 0xfc) | |
3005 | continue; | |
3006 | ||
3007 | /* Get the second opcode. */ | |
3008 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3009 | ||
3010 | if ((code & 0xf0) < 0x80) | |
3011 | switch (code & 0xf0) | |
3012 | { | |
3013 | /* mov (d32,am),dn -> mov (d32,am),dn | |
3014 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3015 | mov (d32,am),an -> mov (d32,am),an | |
3016 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3017 | movbu (d32,am),dn -> movbu (d32,am),dn | |
3018 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
3019 | movhu (d32,am),dn -> movhu (d32,am),dn | |
3020 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
3021 | case 0x00: | |
3022 | case 0x10: | |
3023 | case 0x20: | |
3024 | case 0x30: | |
3025 | case 0x40: | |
3026 | case 0x50: | |
3027 | case 0x60: | |
3028 | case 0x70: | |
3029 | /* Not safe if the high bit is on as relaxing may | |
3030 | move the value out of high mem and thus not fit | |
3031 | in a signed 16bit value. */ | |
3032 | if (code == 0xcc | |
3033 | && (value & 0x8000)) | |
3034 | continue; | |
3035 | ||
3036 | /* Note that we've changed the relocation contents, etc. */ | |
3037 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3038 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3039 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3040 | |
3041 | /* Fix the opcode. */ | |
3042 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3043 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3044 | ||
3045 | /* Fix the relocation's type. */ | |
3046 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3047 | (ELF32_R_TYPE (irel->r_info) |
3048 | == (int) R_MN10300_GOTOFF32) | |
3049 | ? R_MN10300_GOTOFF16 | |
3050 | : (ELF32_R_TYPE (irel->r_info) | |
3051 | == (int) R_MN10300_GOT32) | |
3052 | ? R_MN10300_GOT16 | |
3053 | : (ELF32_R_TYPE (irel->r_info) | |
3054 | == (int) R_MN10300_GOTPC32) | |
3055 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3056 | R_MN10300_16); |
3057 | ||
3058 | /* Delete two bytes of data. */ | |
3059 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3060 | irel->r_offset + 2, 2)) | |
3061 | goto error_return; | |
3062 | ||
3063 | /* That will change things, so, we should relax again. | |
3064 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3065 | *again = TRUE; |
252b5132 RH |
3066 | break; |
3067 | } | |
3068 | else if ((code & 0xf0) == 0x80 | |
3069 | || (code & 0xf0) == 0x90) | |
3070 | switch (code & 0xf3) | |
3071 | { | |
3072 | /* mov dn,(abs32) -> mov dn,(abs16) | |
3073 | movbu dn,(abs32) -> movbu dn,(abs16) | |
3074 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
3075 | case 0x81: | |
3076 | case 0x82: | |
3077 | case 0x83: | |
3078 | /* Note that we've changed the relocation contents, etc. */ | |
3079 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3080 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3081 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3082 | |
3083 | if ((code & 0xf3) == 0x81) | |
3084 | code = 0x01 + (code & 0x0c); | |
3085 | else if ((code & 0xf3) == 0x82) | |
3086 | code = 0x02 + (code & 0x0c); | |
3087 | else if ((code & 0xf3) == 0x83) | |
3088 | code = 0x03 + (code & 0x0c); | |
3089 | else | |
3090 | abort (); | |
3091 | ||
3092 | /* Fix the opcode. */ | |
3093 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3094 | ||
3095 | /* Fix the relocation's type. */ | |
3096 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3097 | (ELF32_R_TYPE (irel->r_info) |
3098 | == (int) R_MN10300_GOTOFF32) | |
3099 | ? R_MN10300_GOTOFF16 | |
3100 | : (ELF32_R_TYPE (irel->r_info) | |
3101 | == (int) R_MN10300_GOT32) | |
3102 | ? R_MN10300_GOT16 | |
3103 | : (ELF32_R_TYPE (irel->r_info) | |
3104 | == (int) R_MN10300_GOTPC32) | |
3105 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3106 | R_MN10300_16); |
3107 | ||
3108 | /* The opcode got shorter too, so we have to fix the | |
3109 | addend and offset too! */ | |
3110 | irel->r_offset -= 1; | |
3111 | ||
3112 | /* Delete three bytes of data. */ | |
3113 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3114 | irel->r_offset + 1, 3)) | |
3115 | goto error_return; | |
3116 | ||
3117 | /* That will change things, so, we should relax again. | |
3118 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3119 | *again = TRUE; |
252b5132 RH |
3120 | break; |
3121 | ||
3122 | /* mov am,(abs32) -> mov am,(abs16) | |
3123 | mov am,(d32,sp) -> mov am,(d16,sp) | |
3124 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
3125 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
3126 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
3127 | case 0x80: | |
3128 | case 0x90: | |
3129 | case 0x91: | |
3130 | case 0x92: | |
3131 | case 0x93: | |
2a0fa943 AO |
3132 | /* sp-based offsets are zero-extended. */ |
3133 | if (code >= 0x90 && code <= 0x93 | |
3134 | && (long)value < 0) | |
3135 | continue; | |
3136 | ||
252b5132 RH |
3137 | /* Note that we've changed the relocation contents, etc. */ |
3138 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3139 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3140 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3141 | |
3142 | /* Fix the opcode. */ | |
3143 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3144 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3145 | ||
3146 | /* Fix the relocation's type. */ | |
3147 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3148 | (ELF32_R_TYPE (irel->r_info) |
3149 | == (int) R_MN10300_GOTOFF32) | |
3150 | ? R_MN10300_GOTOFF16 | |
3151 | : (ELF32_R_TYPE (irel->r_info) | |
3152 | == (int) R_MN10300_GOT32) | |
3153 | ? R_MN10300_GOT16 | |
3154 | : (ELF32_R_TYPE (irel->r_info) | |
3155 | == (int) R_MN10300_GOTPC32) | |
3156 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3157 | R_MN10300_16); |
3158 | ||
3159 | /* Delete two bytes of data. */ | |
3160 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3161 | irel->r_offset + 2, 2)) | |
3162 | goto error_return; | |
3163 | ||
3164 | /* That will change things, so, we should relax again. | |
3165 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3166 | *again = TRUE; |
252b5132 RH |
3167 | break; |
3168 | } | |
3169 | else if ((code & 0xf0) < 0xf0) | |
3170 | switch (code & 0xfc) | |
3171 | { | |
3172 | /* mov imm32,dn -> mov imm16,dn | |
3173 | mov imm32,an -> mov imm16,an | |
3174 | mov (abs32),dn -> mov (abs16),dn | |
3175 | movbu (abs32),dn -> movbu (abs16),dn | |
3176 | movhu (abs32),dn -> movhu (abs16),dn */ | |
3177 | case 0xcc: | |
3178 | case 0xdc: | |
3179 | case 0xa4: | |
3180 | case 0xa8: | |
3181 | case 0xac: | |
3182 | /* Not safe if the high bit is on as relaxing may | |
3183 | move the value out of high mem and thus not fit | |
3184 | in a signed 16bit value. */ | |
3185 | if (code == 0xcc | |
3186 | && (value & 0x8000)) | |
3187 | continue; | |
3188 | ||
2a0fa943 AO |
3189 | /* mov imm16, an zero-extends the immediate. */ |
3190 | if (code == 0xdc | |
3191 | && (long)value < 0) | |
3192 | continue; | |
3193 | ||
252b5132 RH |
3194 | /* Note that we've changed the relocation contents, etc. */ |
3195 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3196 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3197 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3198 | |
3199 | if ((code & 0xfc) == 0xcc) | |
3200 | code = 0x2c + (code & 0x03); | |
3201 | else if ((code & 0xfc) == 0xdc) | |
3202 | code = 0x24 + (code & 0x03); | |
3203 | else if ((code & 0xfc) == 0xa4) | |
3204 | code = 0x30 + (code & 0x03); | |
3205 | else if ((code & 0xfc) == 0xa8) | |
3206 | code = 0x34 + (code & 0x03); | |
3207 | else if ((code & 0xfc) == 0xac) | |
3208 | code = 0x38 + (code & 0x03); | |
3209 | else | |
3210 | abort (); | |
3211 | ||
3212 | /* Fix the opcode. */ | |
3213 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3214 | ||
3215 | /* Fix the relocation's type. */ | |
3216 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3217 | (ELF32_R_TYPE (irel->r_info) |
3218 | == (int) R_MN10300_GOTOFF32) | |
3219 | ? R_MN10300_GOTOFF16 | |
3220 | : (ELF32_R_TYPE (irel->r_info) | |
3221 | == (int) R_MN10300_GOT32) | |
3222 | ? R_MN10300_GOT16 | |
3223 | : (ELF32_R_TYPE (irel->r_info) | |
3224 | == (int) R_MN10300_GOTPC32) | |
3225 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3226 | R_MN10300_16); |
3227 | ||
3228 | /* The opcode got shorter too, so we have to fix the | |
3229 | addend and offset too! */ | |
3230 | irel->r_offset -= 1; | |
3231 | ||
3232 | /* Delete three bytes of data. */ | |
3233 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3234 | irel->r_offset + 1, 3)) | |
3235 | goto error_return; | |
3236 | ||
3237 | /* That will change things, so, we should relax again. | |
3238 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3239 | *again = TRUE; |
252b5132 RH |
3240 | break; |
3241 | ||
3242 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
3243 | mov (d32,sp),an -> mov (d16,sp),an |
3244 | mov (d32,sp),dn -> mov (d16,sp),dn | |
3245 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
3246 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
3247 | add imm32,dn -> add imm16,dn |
3248 | cmp imm32,dn -> cmp imm16,dn | |
3249 | add imm32,an -> add imm16,an | |
3250 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
3251 | and imm32,dn -> and imm16,dn |
3252 | or imm32,dn -> or imm16,dn | |
3253 | xor imm32,dn -> xor imm16,dn | |
3254 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
3255 | |
3256 | case 0xa0: | |
3257 | case 0xb0: | |
3258 | case 0xb1: | |
3259 | case 0xb2: | |
3260 | case 0xb3: | |
3261 | case 0xc0: | |
3262 | case 0xc8: | |
3263 | ||
3264 | case 0xd0: | |
3265 | case 0xd8: | |
3266 | case 0xe0: | |
3267 | case 0xe1: | |
3268 | case 0xe2: | |
3269 | case 0xe3: | |
2a0fa943 AO |
3270 | /* cmp imm16, an zero-extends the immediate. */ |
3271 | if (code == 0xdc | |
3272 | && (long)value < 0) | |
3273 | continue; | |
3274 | ||
3275 | /* So do sp-based offsets. */ | |
3276 | if (code >= 0xb0 && code <= 0xb3 | |
3277 | && (long)value < 0) | |
3278 | continue; | |
3279 | ||
252b5132 RH |
3280 | /* Note that we've changed the relocation contents, etc. */ |
3281 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3282 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3283 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3284 | |
3285 | /* Fix the opcode. */ | |
3286 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3287 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3288 | ||
3289 | /* Fix the relocation's type. */ | |
3290 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3291 | (ELF32_R_TYPE (irel->r_info) |
3292 | == (int) R_MN10300_GOTOFF32) | |
3293 | ? R_MN10300_GOTOFF16 | |
3294 | : (ELF32_R_TYPE (irel->r_info) | |
3295 | == (int) R_MN10300_GOT32) | |
3296 | ? R_MN10300_GOT16 | |
3297 | : (ELF32_R_TYPE (irel->r_info) | |
3298 | == (int) R_MN10300_GOTPC32) | |
3299 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3300 | R_MN10300_16); |
3301 | ||
3302 | /* Delete two bytes of data. */ | |
3303 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3304 | irel->r_offset + 2, 2)) | |
3305 | goto error_return; | |
3306 | ||
3307 | /* That will change things, so, we should relax again. | |
3308 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3309 | *again = TRUE; |
252b5132 RH |
3310 | break; |
3311 | } | |
3312 | else if (code == 0xfe) | |
3313 | { | |
3314 | /* add imm32,sp -> add imm16,sp */ | |
3315 | ||
3316 | /* Note that we've changed the relocation contents, etc. */ | |
3317 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3318 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3319 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3320 | |
3321 | /* Fix the opcode. */ | |
3322 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3323 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
3324 | ||
3325 | /* Fix the relocation's type. */ | |
3326 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3327 | (ELF32_R_TYPE (irel->r_info) |
3328 | == (int) R_MN10300_GOT32) | |
3329 | ? R_MN10300_GOT16 | |
3330 | : (ELF32_R_TYPE (irel->r_info) | |
3331 | == (int) R_MN10300_GOTOFF32) | |
3332 | ? R_MN10300_GOTOFF16 | |
3333 | : (ELF32_R_TYPE (irel->r_info) | |
3334 | == (int) R_MN10300_GOTPC32) | |
3335 | ? R_MN10300_GOTPC16 : | |
010ac81f | 3336 | R_MN10300_16); |
252b5132 RH |
3337 | |
3338 | /* Delete two bytes of data. */ | |
3339 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3340 | irel->r_offset + 2, 2)) | |
3341 | goto error_return; | |
3342 | ||
3343 | /* That will change things, so, we should relax again. | |
3344 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3345 | *again = TRUE; |
252b5132 RH |
3346 | break; |
3347 | } | |
3348 | } | |
3349 | } | |
3350 | } | |
3351 | ||
6cdc0ccc AM |
3352 | if (isymbuf != NULL |
3353 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3354 | { |
3355 | if (! link_info->keep_memory) | |
6cdc0ccc | 3356 | free (isymbuf); |
252b5132 RH |
3357 | else |
3358 | { | |
6cdc0ccc AM |
3359 | /* Cache the symbols for elf_link_input_bfd. */ |
3360 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3361 | } |
9ad5cbcf AM |
3362 | } |
3363 | ||
6cdc0ccc AM |
3364 | if (contents != NULL |
3365 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
3366 | { |
3367 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3368 | free (contents); |
3369 | else | |
252b5132 | 3370 | { |
6cdc0ccc AM |
3371 | /* Cache the section contents for elf_link_input_bfd. */ |
3372 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 3373 | } |
252b5132 RH |
3374 | } |
3375 | ||
6cdc0ccc AM |
3376 | if (internal_relocs != NULL |
3377 | && elf_section_data (sec)->relocs != internal_relocs) | |
3378 | free (internal_relocs); | |
3379 | ||
b34976b6 | 3380 | return TRUE; |
252b5132 RH |
3381 | |
3382 | error_return: | |
6cdc0ccc AM |
3383 | if (isymbuf != NULL |
3384 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3385 | free (isymbuf); | |
3386 | if (contents != NULL | |
3387 | && elf_section_data (section)->this_hdr.contents != contents) | |
3388 | free (contents); | |
3389 | if (internal_relocs != NULL | |
3390 | && elf_section_data (section)->relocs != internal_relocs) | |
3391 | free (internal_relocs); | |
9ad5cbcf | 3392 | |
b34976b6 | 3393 | return FALSE; |
252b5132 RH |
3394 | } |
3395 | ||
3396 | /* Compute the stack size and movm arguments for the function | |
3397 | referred to by HASH at address ADDR in section with | |
3398 | contents CONTENTS, store the information in the hash table. */ | |
3399 | static void | |
3400 | compute_function_info (abfd, hash, addr, contents) | |
3401 | bfd *abfd; | |
3402 | struct elf32_mn10300_link_hash_entry *hash; | |
3403 | bfd_vma addr; | |
3404 | unsigned char *contents; | |
3405 | { | |
3406 | unsigned char byte1, byte2; | |
3407 | /* We only care about a very small subset of the possible prologue | |
3408 | sequences here. Basically we look for: | |
3409 | ||
3410 | movm [d2,d3,a2,a3],sp (optional) | |
3411 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
3412 | 8 bit number) | |
3413 | ||
3414 | If we find anything else, we quit. */ | |
3415 | ||
3416 | /* Look for movm [regs],sp */ | |
3417 | byte1 = bfd_get_8 (abfd, contents + addr); | |
3418 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
3419 | ||
3420 | if (byte1 == 0xcf) | |
3421 | { | |
3422 | hash->movm_args = byte2; | |
3423 | addr += 2; | |
3424 | byte1 = bfd_get_8 (abfd, contents + addr); | |
3425 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
3426 | } | |
3427 | ||
3428 | /* Now figure out how much stack space will be allocated by the movm | |
4cc11e76 | 3429 | instruction. We need this kept separate from the function's normal |
252b5132 RH |
3430 | stack space. */ |
3431 | if (hash->movm_args) | |
3432 | { | |
3433 | /* Space for d2. */ | |
3434 | if (hash->movm_args & 0x80) | |
3435 | hash->movm_stack_size += 4; | |
3436 | ||
3437 | /* Space for d3. */ | |
3438 | if (hash->movm_args & 0x40) | |
3439 | hash->movm_stack_size += 4; | |
3440 | ||
3441 | /* Space for a2. */ | |
3442 | if (hash->movm_args & 0x20) | |
3443 | hash->movm_stack_size += 4; | |
3444 | ||
3445 | /* Space for a3. */ | |
3446 | if (hash->movm_args & 0x10) | |
3447 | hash->movm_stack_size += 4; | |
3448 | ||
3449 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
3450 | if (hash->movm_args & 0x08) | |
3451 | hash->movm_stack_size += 8 * 4; | |
3452 | ||
b08fa4d3 AO |
3453 | if (bfd_get_mach (abfd) == bfd_mach_am33 |
3454 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
31f8dc8f JL |
3455 | { |
3456 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
3457 | if (hash->movm_args & 0x1) | |
3458 | hash->movm_stack_size += 6 * 4; | |
3459 | ||
3460 | /* exreg1 space. e4, e5, e6, e7 */ | |
3461 | if (hash->movm_args & 0x2) | |
3462 | hash->movm_stack_size += 4 * 4; | |
3463 | ||
3464 | /* exreg0 space. e2, e3 */ | |
3465 | if (hash->movm_args & 0x4) | |
3466 | hash->movm_stack_size += 2 * 4; | |
3467 | } | |
252b5132 RH |
3468 | } |
3469 | ||
3470 | /* Now look for the two stack adjustment variants. */ | |
3471 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
3472 | { | |
3473 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
3474 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
3475 | ||
3476 | hash->stack_size = -temp; | |
3477 | } | |
3478 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
3479 | { | |
3480 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
3481 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
3482 | temp = -temp; | |
3483 | ||
3484 | if (temp < 255) | |
3485 | hash->stack_size = temp; | |
3486 | } | |
3487 | ||
3488 | /* If the total stack to be allocated by the call instruction is more | |
3489 | than 255 bytes, then we can't remove the stack adjustment by using | |
3490 | "call" (we might still be able to remove the "movm" instruction. */ | |
3491 | if (hash->stack_size + hash->movm_stack_size > 255) | |
3492 | hash->stack_size = 0; | |
3493 | ||
3494 | return; | |
3495 | } | |
3496 | ||
3497 | /* Delete some bytes from a section while relaxing. */ | |
3498 | ||
b34976b6 | 3499 | static bfd_boolean |
252b5132 RH |
3500 | mn10300_elf_relax_delete_bytes (abfd, sec, addr, count) |
3501 | bfd *abfd; | |
3502 | asection *sec; | |
3503 | bfd_vma addr; | |
3504 | int count; | |
3505 | { | |
3506 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 3507 | unsigned int sec_shndx; |
252b5132 RH |
3508 | bfd_byte *contents; |
3509 | Elf_Internal_Rela *irel, *irelend; | |
3510 | Elf_Internal_Rela *irelalign; | |
3511 | bfd_vma toaddr; | |
6cdc0ccc | 3512 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf AM |
3513 | struct elf_link_hash_entry **sym_hashes; |
3514 | struct elf_link_hash_entry **end_hashes; | |
3515 | unsigned int symcount; | |
252b5132 | 3516 | |
9ad5cbcf | 3517 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
252b5132 RH |
3518 | |
3519 | contents = elf_section_data (sec)->this_hdr.contents; | |
3520 | ||
3521 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
3522 | power larger than the number of bytes we are deleting. */ | |
3523 | ||
3524 | irelalign = NULL; | |
eea6121a | 3525 | toaddr = sec->size; |
252b5132 RH |
3526 | |
3527 | irel = elf_section_data (sec)->relocs; | |
3528 | irelend = irel + sec->reloc_count; | |
3529 | ||
3530 | /* Actually delete the bytes. */ | |
dc810e39 AM |
3531 | memmove (contents + addr, contents + addr + count, |
3532 | (size_t) (toaddr - addr - count)); | |
eea6121a | 3533 | sec->size -= count; |
252b5132 RH |
3534 | |
3535 | /* Adjust all the relocs. */ | |
3536 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
3537 | { | |
3538 | /* Get the new reloc address. */ | |
3539 | if ((irel->r_offset > addr | |
3540 | && irel->r_offset < toaddr)) | |
3541 | irel->r_offset -= count; | |
3542 | } | |
3543 | ||
3544 | /* Adjust the local symbols defined in this section. */ | |
6cdc0ccc AM |
3545 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3546 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3547 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
252b5132 | 3548 | { |
6cdc0ccc AM |
3549 | if (isym->st_shndx == sec_shndx |
3550 | && isym->st_value > addr | |
3551 | && isym->st_value < toaddr) | |
3552 | isym->st_value -= count; | |
252b5132 RH |
3553 | } |
3554 | ||
3555 | /* Now adjust the global symbols defined in this section. */ | |
9ad5cbcf AM |
3556 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3557 | - symtab_hdr->sh_info); | |
3558 | sym_hashes = elf_sym_hashes (abfd); | |
3559 | end_hashes = sym_hashes + symcount; | |
3560 | for (; sym_hashes < end_hashes; sym_hashes++) | |
252b5132 | 3561 | { |
9ad5cbcf AM |
3562 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
3563 | if ((sym_hash->root.type == bfd_link_hash_defined | |
3564 | || sym_hash->root.type == bfd_link_hash_defweak) | |
3565 | && sym_hash->root.u.def.section == sec | |
3566 | && sym_hash->root.u.def.value > addr | |
3567 | && sym_hash->root.u.def.value < toaddr) | |
252b5132 | 3568 | { |
9ad5cbcf | 3569 | sym_hash->root.u.def.value -= count; |
252b5132 RH |
3570 | } |
3571 | } | |
3572 | ||
b34976b6 | 3573 | return TRUE; |
252b5132 RH |
3574 | } |
3575 | ||
b34976b6 AM |
3576 | /* Return TRUE if a symbol exists at the given address, else return |
3577 | FALSE. */ | |
3578 | static bfd_boolean | |
6cdc0ccc | 3579 | mn10300_elf_symbol_address_p (abfd, sec, isym, addr) |
252b5132 RH |
3580 | bfd *abfd; |
3581 | asection *sec; | |
6cdc0ccc | 3582 | Elf_Internal_Sym *isym; |
252b5132 RH |
3583 | bfd_vma addr; |
3584 | { | |
3585 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 3586 | unsigned int sec_shndx; |
6cdc0ccc | 3587 | Elf_Internal_Sym *isymend; |
9ad5cbcf AM |
3588 | struct elf_link_hash_entry **sym_hashes; |
3589 | struct elf_link_hash_entry **end_hashes; | |
3590 | unsigned int symcount; | |
252b5132 | 3591 | |
9ad5cbcf | 3592 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
252b5132 RH |
3593 | |
3594 | /* Examine all the symbols. */ | |
9ad5cbcf | 3595 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
6cdc0ccc | 3596 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) |
252b5132 | 3597 | { |
6cdc0ccc AM |
3598 | if (isym->st_shndx == sec_shndx |
3599 | && isym->st_value == addr) | |
b34976b6 | 3600 | return TRUE; |
252b5132 RH |
3601 | } |
3602 | ||
9ad5cbcf AM |
3603 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3604 | - symtab_hdr->sh_info); | |
3605 | sym_hashes = elf_sym_hashes (abfd); | |
3606 | end_hashes = sym_hashes + symcount; | |
3607 | for (; sym_hashes < end_hashes; sym_hashes++) | |
252b5132 | 3608 | { |
9ad5cbcf AM |
3609 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
3610 | if ((sym_hash->root.type == bfd_link_hash_defined | |
3611 | || sym_hash->root.type == bfd_link_hash_defweak) | |
3612 | && sym_hash->root.u.def.section == sec | |
3613 | && sym_hash->root.u.def.value == addr) | |
b34976b6 | 3614 | return TRUE; |
252b5132 | 3615 | } |
9ad5cbcf | 3616 | |
b34976b6 | 3617 | return FALSE; |
252b5132 RH |
3618 | } |
3619 | ||
3620 | /* This is a version of bfd_generic_get_relocated_section_contents | |
3621 | which uses mn10300_elf_relocate_section. */ | |
3622 | ||
3623 | static bfd_byte * | |
3624 | mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, | |
1049f94e | 3625 | data, relocatable, symbols) |
252b5132 RH |
3626 | bfd *output_bfd; |
3627 | struct bfd_link_info *link_info; | |
3628 | struct bfd_link_order *link_order; | |
3629 | bfd_byte *data; | |
1049f94e | 3630 | bfd_boolean relocatable; |
252b5132 RH |
3631 | asymbol **symbols; |
3632 | { | |
3633 | Elf_Internal_Shdr *symtab_hdr; | |
3634 | asection *input_section = link_order->u.indirect.section; | |
3635 | bfd *input_bfd = input_section->owner; | |
3636 | asection **sections = NULL; | |
3637 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 3638 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
3639 | |
3640 | /* We only need to handle the case of relaxing, or of having a | |
3641 | particular set of section contents, specially. */ | |
1049f94e | 3642 | if (relocatable |
252b5132 RH |
3643 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
3644 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3645 | link_order, data, | |
1049f94e | 3646 | relocatable, |
252b5132 RH |
3647 | symbols); |
3648 | ||
3649 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3650 | ||
3651 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
eea6121a | 3652 | (size_t) input_section->size); |
252b5132 RH |
3653 | |
3654 | if ((input_section->flags & SEC_RELOC) != 0 | |
3655 | && input_section->reloc_count > 0) | |
3656 | { | |
252b5132 | 3657 | asection **secpp; |
6cdc0ccc | 3658 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 3659 | bfd_size_type amt; |
252b5132 | 3660 | |
45d6a902 | 3661 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 | 3662 | (input_bfd, input_section, (PTR) NULL, |
b34976b6 | 3663 | (Elf_Internal_Rela *) NULL, FALSE)); |
252b5132 RH |
3664 | if (internal_relocs == NULL) |
3665 | goto error_return; | |
3666 | ||
6cdc0ccc AM |
3667 | if (symtab_hdr->sh_info != 0) |
3668 | { | |
3669 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3670 | if (isymbuf == NULL) | |
3671 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3672 | symtab_hdr->sh_info, 0, | |
3673 | NULL, NULL, NULL); | |
3674 | if (isymbuf == NULL) | |
3675 | goto error_return; | |
3676 | } | |
252b5132 | 3677 | |
9ad5cbcf AM |
3678 | amt = symtab_hdr->sh_info; |
3679 | amt *= sizeof (asection *); | |
3680 | sections = (asection **) bfd_malloc (amt); | |
3681 | if (sections == NULL && amt != 0) | |
252b5132 RH |
3682 | goto error_return; |
3683 | ||
6cdc0ccc AM |
3684 | isymend = isymbuf + symtab_hdr->sh_info; |
3685 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
3686 | { |
3687 | asection *isec; | |
3688 | ||
6cdc0ccc | 3689 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3690 | isec = bfd_und_section_ptr; |
6cdc0ccc | 3691 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3692 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 3693 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
3694 | isec = bfd_com_section_ptr; |
3695 | else | |
6cdc0ccc | 3696 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
3697 | |
3698 | *secpp = isec; | |
3699 | } | |
3700 | ||
3701 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
3702 | input_section, data, internal_relocs, | |
6cdc0ccc | 3703 | isymbuf, sections)) |
252b5132 RH |
3704 | goto error_return; |
3705 | ||
3706 | if (sections != NULL) | |
3707 | free (sections); | |
6cdc0ccc AM |
3708 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
3709 | free (isymbuf); | |
252b5132 RH |
3710 | if (internal_relocs != elf_section_data (input_section)->relocs) |
3711 | free (internal_relocs); | |
252b5132 RH |
3712 | } |
3713 | ||
3714 | return data; | |
3715 | ||
3716 | error_return: | |
6cdc0ccc AM |
3717 | if (sections != NULL) |
3718 | free (sections); | |
3719 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3720 | free (isymbuf); | |
252b5132 RH |
3721 | if (internal_relocs != NULL |
3722 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3723 | free (internal_relocs); | |
252b5132 RH |
3724 | return NULL; |
3725 | } | |
3726 | ||
3727 | /* Assorted hash table functions. */ | |
3728 | ||
3729 | /* Initialize an entry in the link hash table. */ | |
3730 | ||
3731 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
3732 | ||
3733 | static struct bfd_hash_entry * | |
3734 | elf32_mn10300_link_hash_newfunc (entry, table, string) | |
3735 | struct bfd_hash_entry *entry; | |
3736 | struct bfd_hash_table *table; | |
3737 | const char *string; | |
3738 | { | |
3739 | struct elf32_mn10300_link_hash_entry *ret = | |
3740 | (struct elf32_mn10300_link_hash_entry *) entry; | |
3741 | ||
3742 | /* Allocate the structure if it has not already been allocated by a | |
3743 | subclass. */ | |
3744 | if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) | |
3745 | ret = ((struct elf32_mn10300_link_hash_entry *) | |
3746 | bfd_hash_allocate (table, | |
3747 | sizeof (struct elf32_mn10300_link_hash_entry))); | |
3748 | if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) | |
3749 | return (struct bfd_hash_entry *) ret; | |
3750 | ||
3751 | /* Call the allocation method of the superclass. */ | |
3752 | ret = ((struct elf32_mn10300_link_hash_entry *) | |
3753 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3754 | table, string)); | |
3755 | if (ret != (struct elf32_mn10300_link_hash_entry *) NULL) | |
3756 | { | |
3757 | ret->direct_calls = 0; | |
3758 | ret->stack_size = 0; | |
5354b572 | 3759 | ret->movm_args = 0; |
252b5132 RH |
3760 | ret->movm_stack_size = 0; |
3761 | ret->flags = 0; | |
eb13e63f | 3762 | ret->value = 0; |
252b5132 RH |
3763 | } |
3764 | ||
3765 | return (struct bfd_hash_entry *) ret; | |
3766 | } | |
3767 | ||
3768 | /* Create an mn10300 ELF linker hash table. */ | |
3769 | ||
3770 | static struct bfd_link_hash_table * | |
3771 | elf32_mn10300_link_hash_table_create (abfd) | |
3772 | bfd *abfd; | |
3773 | { | |
3774 | struct elf32_mn10300_link_hash_table *ret; | |
dc810e39 | 3775 | bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table); |
252b5132 | 3776 | |
e2d34d7d | 3777 | ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3778 | if (ret == (struct elf32_mn10300_link_hash_table *) NULL) |
3779 | return NULL; | |
3780 | ||
66eb6687 AM |
3781 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
3782 | elf32_mn10300_link_hash_newfunc, | |
3783 | sizeof (struct elf32_mn10300_link_hash_entry))) | |
252b5132 | 3784 | { |
e2d34d7d | 3785 | free (ret); |
252b5132 RH |
3786 | return NULL; |
3787 | } | |
3788 | ||
3789 | ret->flags = 0; | |
dc810e39 | 3790 | amt = sizeof (struct elf_link_hash_table); |
252b5132 | 3791 | ret->static_hash_table |
e2d34d7d | 3792 | = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3793 | if (ret->static_hash_table == NULL) |
3794 | { | |
e2d34d7d | 3795 | free (ret); |
252b5132 RH |
3796 | return NULL; |
3797 | } | |
3798 | ||
66eb6687 AM |
3799 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
3800 | elf32_mn10300_link_hash_newfunc, | |
3801 | sizeof (struct elf32_mn10300_link_hash_entry))) | |
252b5132 | 3802 | { |
e2d34d7d DJ |
3803 | free (ret->static_hash_table); |
3804 | free (ret); | |
252b5132 RH |
3805 | return NULL; |
3806 | } | |
3807 | return &ret->root.root; | |
3808 | } | |
3809 | ||
e2d34d7d DJ |
3810 | /* Free an mn10300 ELF linker hash table. */ |
3811 | ||
3812 | static void | |
3813 | elf32_mn10300_link_hash_table_free (hash) | |
3814 | struct bfd_link_hash_table *hash; | |
3815 | { | |
3816 | struct elf32_mn10300_link_hash_table *ret | |
3817 | = (struct elf32_mn10300_link_hash_table *) hash; | |
3818 | ||
3819 | _bfd_generic_link_hash_table_free | |
3820 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
3821 | _bfd_generic_link_hash_table_free | |
3822 | ((struct bfd_link_hash_table *) ret); | |
3823 | } | |
3824 | ||
dc810e39 | 3825 | static unsigned long |
252b5132 RH |
3826 | elf_mn10300_mach (flags) |
3827 | flagword flags; | |
3828 | { | |
3829 | switch (flags & EF_MN10300_MACH) | |
3830 | { | |
010ac81f KH |
3831 | case E_MN10300_MACH_MN10300: |
3832 | default: | |
3833 | return bfd_mach_mn10300; | |
252b5132 | 3834 | |
010ac81f KH |
3835 | case E_MN10300_MACH_AM33: |
3836 | return bfd_mach_am33; | |
b08fa4d3 AO |
3837 | |
3838 | case E_MN10300_MACH_AM33_2: | |
3839 | return bfd_mach_am33_2; | |
252b5132 RH |
3840 | } |
3841 | } | |
3842 | ||
3843 | /* The final processing done just before writing out a MN10300 ELF object | |
3844 | file. This gets the MN10300 architecture right based on the machine | |
3845 | number. */ | |
3846 | ||
252b5132 RH |
3847 | void |
3848 | _bfd_mn10300_elf_final_write_processing (abfd, linker) | |
3849 | bfd *abfd; | |
b34976b6 | 3850 | bfd_boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
3851 | { |
3852 | unsigned long val; | |
252b5132 RH |
3853 | |
3854 | switch (bfd_get_mach (abfd)) | |
3855 | { | |
010ac81f KH |
3856 | default: |
3857 | case bfd_mach_mn10300: | |
3858 | val = E_MN10300_MACH_MN10300; | |
3859 | break; | |
3860 | ||
3861 | case bfd_mach_am33: | |
3862 | val = E_MN10300_MACH_AM33; | |
3863 | break; | |
b08fa4d3 AO |
3864 | |
3865 | case bfd_mach_am33_2: | |
3866 | val = E_MN10300_MACH_AM33_2; | |
3867 | break; | |
252b5132 RH |
3868 | } |
3869 | ||
3870 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
3871 | elf_elfheader (abfd)->e_flags |= val; | |
3872 | } | |
3873 | ||
b34976b6 | 3874 | bfd_boolean |
252b5132 RH |
3875 | _bfd_mn10300_elf_object_p (abfd) |
3876 | bfd *abfd; | |
3877 | { | |
3878 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 3879 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 3880 | return TRUE; |
252b5132 RH |
3881 | } |
3882 | ||
3883 | /* Merge backend specific data from an object file to the output | |
3884 | object file when linking. */ | |
3885 | ||
b34976b6 | 3886 | bfd_boolean |
252b5132 RH |
3887 | _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) |
3888 | bfd *ibfd; | |
3889 | bfd *obfd; | |
3890 | { | |
3891 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3892 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3893 | return TRUE; |
252b5132 RH |
3894 | |
3895 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
3896 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
3897 | { | |
3898 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3b36f7e6 AM |
3899 | bfd_get_mach (ibfd))) |
3900 | return FALSE; | |
252b5132 RH |
3901 | } |
3902 | ||
b34976b6 | 3903 | return TRUE; |
252b5132 RH |
3904 | } |
3905 | ||
03a12831 AO |
3906 | #define PLT0_ENTRY_SIZE 15 |
3907 | #define PLT_ENTRY_SIZE 20 | |
3908 | #define PIC_PLT_ENTRY_SIZE 24 | |
3909 | ||
3910 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
3911 | { | |
3912 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
3913 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
3914 | 0xf0, 0xf4, /* jmp (a0) */ | |
3915 | }; | |
3916 | ||
3917 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
3918 | { | |
3919 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
3920 | 0xf0, 0xf4, /* jmp (a0) */ | |
3921 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
3922 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
3923 | }; | |
3924 | ||
3925 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
3926 | { | |
3927 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
3928 | 0xf0, 0xf4, /* jmp (a0) */ | |
3929 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
3930 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
3931 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
3932 | 0xf0, 0xf4, /* jmp (a0) */ | |
3933 | }; | |
3934 | ||
3935 | /* Return size of the first PLT entry. */ | |
3936 | #define elf_mn10300_sizeof_plt0(info) \ | |
3937 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
3938 | ||
3939 | /* Return size of a PLT entry. */ | |
3940 | #define elf_mn10300_sizeof_plt(info) \ | |
3941 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
3942 | ||
3943 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
3944 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
3945 | ||
3946 | /* Return offset of the linker in PLT0 entry. */ | |
3947 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
3948 | ||
3949 | /* Return offset of the GOT id in PLT0 entry. */ | |
3950 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
3951 | ||
4cc11e76 | 3952 | /* Return offset of the temporary in PLT entry */ |
03a12831 AO |
3953 | #define elf_mn10300_plt_temp_offset(info) 8 |
3954 | ||
3955 | /* Return offset of the symbol in PLT entry. */ | |
3956 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
3957 | ||
3958 | /* Return offset of the relocation in PLT entry. */ | |
3959 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
3960 | ||
3961 | /* The name of the dynamic interpreter. This is put in the .interp | |
3962 | section. */ | |
3963 | ||
3964 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
3965 | ||
3966 | /* Create dynamic sections when linking against a dynamic object. */ | |
3967 | ||
3968 | static bfd_boolean | |
3969 | _bfd_mn10300_elf_create_dynamic_sections (abfd, info) | |
3970 | bfd *abfd; | |
3971 | struct bfd_link_info *info; | |
3972 | { | |
3973 | flagword flags; | |
3974 | asection * s; | |
9c5bfbb7 | 3975 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
3976 | int ptralign = 0; |
3977 | ||
3978 | switch (bed->s->arch_size) | |
3979 | { | |
3980 | case 32: | |
3981 | ptralign = 2; | |
3982 | break; | |
3983 | ||
3984 | case 64: | |
3985 | ptralign = 3; | |
3986 | break; | |
3987 | ||
3988 | default: | |
3989 | bfd_set_error (bfd_error_bad_value); | |
3990 | return FALSE; | |
3991 | } | |
3992 | ||
3993 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3994 | .rel[a].bss sections. */ | |
3995 | ||
3996 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3997 | | SEC_LINKER_CREATED); | |
3998 | ||
3496cb2a L |
3999 | s = bfd_make_section_with_flags (abfd, |
4000 | (bed->default_use_rela_p | |
4001 | ? ".rela.plt" : ".rel.plt"), | |
4002 | flags | SEC_READONLY); | |
03a12831 | 4003 | if (s == NULL |
03a12831 AO |
4004 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4005 | return FALSE; | |
4006 | ||
4007 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
4008 | return FALSE; | |
4009 | ||
4010 | { | |
4011 | const char * secname; | |
4012 | char * relname; | |
4013 | flagword secflags; | |
4014 | asection * sec; | |
4015 | ||
4016 | for (sec = abfd->sections; sec; sec = sec->next) | |
4017 | { | |
4018 | secflags = bfd_get_section_flags (abfd, sec); | |
4019 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
4020 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
4021 | continue; | |
4022 | ||
4023 | secname = bfd_get_section_name (abfd, sec); | |
4024 | relname = (char *) bfd_malloc (strlen (secname) + 6); | |
4025 | strcpy (relname, ".rela"); | |
4026 | strcat (relname, secname); | |
4027 | ||
3496cb2a L |
4028 | s = bfd_make_section_with_flags (abfd, relname, |
4029 | flags | SEC_READONLY); | |
03a12831 | 4030 | if (s == NULL |
03a12831 AO |
4031 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4032 | return FALSE; | |
4033 | } | |
4034 | } | |
4035 | ||
4036 | if (bed->want_dynbss) | |
4037 | { | |
4038 | /* The .dynbss section is a place to put symbols which are defined | |
4039 | by dynamic objects, are referenced by regular objects, and are | |
4040 | not functions. We must allocate space for them in the process | |
4041 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
4042 | initialize them at run time. The linker script puts the .dynbss | |
4043 | section into the .bss section of the final image. */ | |
3496cb2a L |
4044 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
4045 | SEC_ALLOC | SEC_LINKER_CREATED); | |
4046 | if (s == NULL) | |
03a12831 AO |
4047 | return FALSE; |
4048 | ||
4049 | /* The .rel[a].bss section holds copy relocs. This section is not | |
4050 | normally needed. We need to create it here, though, so that the | |
4051 | linker will map it to an output section. We can't just create it | |
4052 | only if we need it, because we will not know whether we need it | |
4053 | until we have seen all the input files, and the first time the | |
4054 | main linker code calls BFD after examining all the input files | |
4055 | (size_dynamic_sections) the input sections have already been | |
4056 | mapped to the output sections. If the section turns out not to | |
4057 | be needed, we can discard it later. We will never need this | |
4058 | section when generating a shared object, since they do not use | |
4059 | copy relocs. */ | |
4060 | if (! info->shared) | |
4061 | { | |
3496cb2a L |
4062 | s = bfd_make_section_with_flags (abfd, |
4063 | (bed->default_use_rela_p | |
4064 | ? ".rela.bss" : ".rel.bss"), | |
4065 | flags | SEC_READONLY); | |
03a12831 | 4066 | if (s == NULL |
03a12831 AO |
4067 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
4068 | return FALSE; | |
4069 | } | |
4070 | } | |
4071 | ||
4072 | return TRUE; | |
4073 | } | |
4074 | \f | |
4075 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4076 | regular object. The current definition is in some section of the | |
4077 | dynamic object, but we're not including those sections. We have to | |
4078 | change the definition to something the rest of the link can | |
4079 | understand. */ | |
4080 | ||
4081 | static bfd_boolean | |
4082 | _bfd_mn10300_elf_adjust_dynamic_symbol (info, h) | |
4083 | struct bfd_link_info * info; | |
4084 | struct elf_link_hash_entry * h; | |
4085 | { | |
4086 | bfd * dynobj; | |
4087 | asection * s; | |
4088 | unsigned int power_of_two; | |
4089 | ||
4090 | dynobj = elf_hash_table (info)->dynobj; | |
4091 | ||
4092 | /* Make sure we know what is going on here. */ | |
4093 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4094 | && (h->needs_plt |
f6e332e6 | 4095 | || h->u.weakdef != NULL |
f5385ebf AM |
4096 | || (h->def_dynamic |
4097 | && h->ref_regular | |
4098 | && !h->def_regular))); | |
03a12831 AO |
4099 | |
4100 | /* If this is a function, put it in the procedure linkage table. We | |
4101 | will fill in the contents of the procedure linkage table later, | |
4102 | when we know the address of the .got section. */ | |
4103 | if (h->type == STT_FUNC | |
f5385ebf | 4104 | || h->needs_plt) |
03a12831 AO |
4105 | { |
4106 | if (! info->shared | |
f5385ebf AM |
4107 | && !h->def_dynamic |
4108 | && !h->ref_dynamic) | |
03a12831 AO |
4109 | { |
4110 | /* This case can occur if we saw a PLT reloc in an input | |
4111 | file, but the symbol was never referred to by a dynamic | |
4112 | object. In such a case, we don't actually need to build | |
4113 | a procedure linkage table, and we can just do a REL32 | |
4114 | reloc instead. */ | |
f5385ebf | 4115 | BFD_ASSERT (h->needs_plt); |
03a12831 AO |
4116 | return TRUE; |
4117 | } | |
4118 | ||
4119 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4120 | if (h->dynindx == -1) | |
4121 | { | |
c152c796 | 4122 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
03a12831 AO |
4123 | return FALSE; |
4124 | } | |
4125 | ||
4126 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
4127 | BFD_ASSERT (s != NULL); | |
4128 | ||
4129 | /* If this is the first .plt entry, make room for the special | |
4130 | first entry. */ | |
eea6121a AM |
4131 | if (s->size == 0) |
4132 | s->size += elf_mn10300_sizeof_plt0 (info); | |
03a12831 AO |
4133 | |
4134 | /* If this symbol is not defined in a regular file, and we are | |
4135 | not generating a shared library, then set the symbol to this | |
4136 | location in the .plt. This is required to make function | |
4137 | pointers compare as equal between the normal executable and | |
4138 | the shared library. */ | |
4139 | if (! info->shared | |
f5385ebf | 4140 | && !h->def_regular) |
03a12831 AO |
4141 | { |
4142 | h->root.u.def.section = s; | |
eea6121a | 4143 | h->root.u.def.value = s->size; |
03a12831 AO |
4144 | } |
4145 | ||
eea6121a | 4146 | h->plt.offset = s->size; |
03a12831 AO |
4147 | |
4148 | /* Make room for this entry. */ | |
eea6121a | 4149 | s->size += elf_mn10300_sizeof_plt (info); |
03a12831 AO |
4150 | |
4151 | /* We also need to make an entry in the .got.plt section, which | |
4152 | will be placed in the .got section by the linker script. */ | |
4153 | ||
4154 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4155 | BFD_ASSERT (s != NULL); | |
eea6121a | 4156 | s->size += 4; |
03a12831 AO |
4157 | |
4158 | /* We also need to make an entry in the .rela.plt section. */ | |
4159 | ||
4160 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4161 | BFD_ASSERT (s != NULL); | |
eea6121a | 4162 | s->size += sizeof (Elf32_External_Rela); |
03a12831 AO |
4163 | |
4164 | return TRUE; | |
4165 | } | |
4166 | ||
4167 | /* If this is a weak symbol, and there is a real definition, the | |
4168 | processor independent code will have arranged for us to see the | |
4169 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4170 | if (h->u.weakdef != NULL) |
03a12831 | 4171 | { |
f6e332e6 AM |
4172 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4173 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4174 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4175 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
03a12831 AO |
4176 | return TRUE; |
4177 | } | |
4178 | ||
4179 | /* This is a reference to a symbol defined by a dynamic object which | |
4180 | is not a function. */ | |
4181 | ||
4182 | /* If we are creating a shared library, we must presume that the | |
4183 | only references to the symbol are via the global offset table. | |
4184 | For such cases we need not do anything here; the relocations will | |
4185 | be handled correctly by relocate_section. */ | |
4186 | if (info->shared) | |
4187 | return TRUE; | |
4188 | ||
4189 | /* If there are no references to this symbol that do not use the | |
4190 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 4191 | if (!h->non_got_ref) |
03a12831 AO |
4192 | return TRUE; |
4193 | ||
909272ee AM |
4194 | if (h->size == 0) |
4195 | { | |
4196 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
4197 | h->root.root.string); | |
4198 | return TRUE; | |
4199 | } | |
4200 | ||
03a12831 AO |
4201 | /* We must allocate the symbol in our .dynbss section, which will |
4202 | become part of the .bss section of the executable. There will be | |
4203 | an entry for this symbol in the .dynsym section. The dynamic | |
4204 | object will contain position independent code, so all references | |
4205 | from the dynamic object to this symbol will go through the global | |
4206 | offset table. The dynamic linker will use the .dynsym entry to | |
4207 | determine the address it must put in the global offset table, so | |
4208 | both the dynamic object and the regular object will refer to the | |
4209 | same memory location for the variable. */ | |
4210 | ||
4211 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
4212 | BFD_ASSERT (s != NULL); | |
4213 | ||
4214 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
4215 | copy the initial value out of the dynamic object and into the | |
4216 | runtime process image. We need to remember the offset into the | |
4217 | .rela.bss section we are going to use. */ | |
4218 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4219 | { | |
4220 | asection * srel; | |
4221 | ||
4222 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
4223 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4224 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 4225 | h->needs_copy = 1; |
03a12831 AO |
4226 | } |
4227 | ||
4228 | /* We need to figure out the alignment required for this symbol. I | |
4229 | have no idea how ELF linkers handle this. */ | |
4230 | power_of_two = bfd_log2 (h->size); | |
4231 | if (power_of_two > 3) | |
4232 | power_of_two = 3; | |
4233 | ||
4234 | /* Apply the required alignment. */ | |
eea6121a | 4235 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
03a12831 AO |
4236 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
4237 | { | |
4238 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
4239 | return FALSE; | |
4240 | } | |
4241 | ||
4242 | /* Define the symbol as being at this point in the section. */ | |
4243 | h->root.u.def.section = s; | |
eea6121a | 4244 | h->root.u.def.value = s->size; |
03a12831 AO |
4245 | |
4246 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 4247 | s->size += h->size; |
03a12831 AO |
4248 | |
4249 | return TRUE; | |
4250 | } | |
4251 | ||
03a12831 AO |
4252 | /* Set the sizes of the dynamic sections. */ |
4253 | ||
4254 | static bfd_boolean | |
4255 | _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info) | |
4256 | bfd * output_bfd; | |
4257 | struct bfd_link_info * info; | |
4258 | { | |
4259 | bfd * dynobj; | |
4260 | asection * s; | |
4261 | bfd_boolean plt; | |
4262 | bfd_boolean relocs; | |
4263 | bfd_boolean reltext; | |
4264 | ||
4265 | dynobj = elf_hash_table (info)->dynobj; | |
4266 | BFD_ASSERT (dynobj != NULL); | |
4267 | ||
4268 | if (elf_hash_table (info)->dynamic_sections_created) | |
4269 | { | |
4270 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 4271 | if (info->executable) |
03a12831 AO |
4272 | { |
4273 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4274 | BFD_ASSERT (s != NULL); | |
eea6121a | 4275 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
03a12831 AO |
4276 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4277 | } | |
4278 | } | |
4279 | else | |
4280 | { | |
4281 | /* We may have created entries in the .rela.got section. | |
4282 | However, if we are not creating the dynamic sections, we will | |
4283 | not actually use these entries. Reset the size of .rela.got, | |
4284 | which will cause it to get stripped from the output file | |
4285 | below. */ | |
4286 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4287 | if (s != NULL) | |
eea6121a | 4288 | s->size = 0; |
03a12831 AO |
4289 | } |
4290 | ||
03a12831 AO |
4291 | /* The check_relocs and adjust_dynamic_symbol entry points have |
4292 | determined the sizes of the various dynamic sections. Allocate | |
4293 | memory for them. */ | |
4294 | plt = FALSE; | |
4295 | relocs = FALSE; | |
4296 | reltext = FALSE; | |
4297 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4298 | { | |
4299 | const char * name; | |
03a12831 AO |
4300 | |
4301 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4302 | continue; | |
4303 | ||
4304 | /* It's OK to base decisions on the section name, because none | |
4305 | of the dynobj section names depend upon the input files. */ | |
4306 | name = bfd_get_section_name (dynobj, s); | |
4307 | ||
03a12831 AO |
4308 | if (strcmp (name, ".plt") == 0) |
4309 | { | |
c456f082 AM |
4310 | /* Remember whether there is a PLT. */ |
4311 | plt = s->size != 0; | |
03a12831 | 4312 | } |
0112cd26 | 4313 | else if (CONST_STRNEQ (name, ".rela")) |
03a12831 | 4314 | { |
c456f082 | 4315 | if (s->size != 0) |
03a12831 AO |
4316 | { |
4317 | asection * target; | |
4318 | ||
4319 | /* Remember whether there are any reloc sections other | |
4320 | than .rela.plt. */ | |
4321 | if (strcmp (name, ".rela.plt") != 0) | |
4322 | { | |
4323 | const char * outname; | |
4324 | ||
4325 | relocs = TRUE; | |
4326 | ||
4327 | /* If this relocation section applies to a read only | |
4328 | section, then we probably need a DT_TEXTREL | |
4329 | entry. The entries in the .rela.plt section | |
4330 | really apply to the .got section, which we | |
4331 | created ourselves and so know is not readonly. */ | |
4332 | outname = bfd_get_section_name (output_bfd, | |
4333 | s->output_section); | |
4334 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
4335 | if (target != NULL | |
4336 | && (target->flags & SEC_READONLY) != 0 | |
4337 | && (target->flags & SEC_ALLOC) != 0) | |
4338 | reltext = TRUE; | |
4339 | } | |
4340 | ||
4341 | /* We use the reloc_count field as a counter if we need | |
4342 | to copy relocs into the output file. */ | |
4343 | s->reloc_count = 0; | |
4344 | } | |
4345 | } | |
0112cd26 | 4346 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 4347 | && strcmp (name, ".dynbss") != 0) |
03a12831 AO |
4348 | /* It's not one of our sections, so don't allocate space. */ |
4349 | continue; | |
4350 | ||
c456f082 | 4351 | if (s->size == 0) |
03a12831 | 4352 | { |
c456f082 AM |
4353 | /* If we don't need this section, strip it from the |
4354 | output file. This is mostly to handle .rela.bss and | |
4355 | .rela.plt. We must create both sections in | |
4356 | create_dynamic_sections, because they must be created | |
4357 | before the linker maps input sections to output | |
4358 | sections. The linker does that before | |
4359 | adjust_dynamic_symbol is called, and it is that | |
4360 | function which decides whether anything needs to go | |
4361 | into these sections. */ | |
8423293d | 4362 | s->flags |= SEC_EXCLUDE; |
03a12831 AO |
4363 | continue; |
4364 | } | |
4365 | ||
c456f082 AM |
4366 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
4367 | continue; | |
4368 | ||
03a12831 AO |
4369 | /* Allocate memory for the section contents. We use bfd_zalloc |
4370 | here in case unused entries are not reclaimed before the | |
4371 | section's contents are written out. This should not happen, | |
4372 | but this way if it does, we get a R_MN10300_NONE reloc | |
4373 | instead of garbage. */ | |
eea6121a | 4374 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 4375 | if (s->contents == NULL) |
03a12831 AO |
4376 | return FALSE; |
4377 | } | |
4378 | ||
4379 | if (elf_hash_table (info)->dynamic_sections_created) | |
4380 | { | |
4381 | /* Add some entries to the .dynamic section. We fill in the | |
4382 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
4383 | but we must add the entries now so that we get the correct | |
4384 | size for the .dynamic section. The DT_DEBUG entry is filled | |
4385 | in by the dynamic linker and used by the debugger. */ | |
4386 | if (! info->shared) | |
4387 | { | |
5a580b3a | 4388 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) |
03a12831 AO |
4389 | return FALSE; |
4390 | } | |
4391 | ||
4392 | if (plt) | |
4393 | { | |
5a580b3a AM |
4394 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
4395 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4396 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
4397 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
03a12831 AO |
4398 | return FALSE; |
4399 | } | |
4400 | ||
4401 | if (relocs) | |
4402 | { | |
5a580b3a AM |
4403 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
4404 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
4405 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
4406 | sizeof (Elf32_External_Rela))) | |
03a12831 AO |
4407 | return FALSE; |
4408 | } | |
4409 | ||
4410 | if (reltext) | |
4411 | { | |
5a580b3a | 4412 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
03a12831 AO |
4413 | return FALSE; |
4414 | } | |
4415 | } | |
4416 | ||
4417 | return TRUE; | |
4418 | } | |
4419 | ||
4420 | /* Finish up dynamic symbol handling. We set the contents of various | |
4421 | dynamic sections here. */ | |
4422 | ||
4423 | static bfd_boolean | |
4424 | _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4425 | bfd * output_bfd; | |
4426 | struct bfd_link_info * info; | |
4427 | struct elf_link_hash_entry * h; | |
4428 | Elf_Internal_Sym * sym; | |
4429 | { | |
4430 | bfd * dynobj; | |
4431 | ||
4432 | dynobj = elf_hash_table (info)->dynobj; | |
4433 | ||
4434 | if (h->plt.offset != (bfd_vma) -1) | |
4435 | { | |
4436 | asection * splt; | |
4437 | asection * sgot; | |
4438 | asection * srel; | |
4439 | bfd_vma plt_index; | |
4440 | bfd_vma got_offset; | |
4441 | Elf_Internal_Rela rel; | |
4442 | ||
4443 | /* This symbol has an entry in the procedure linkage table. Set | |
4444 | it up. */ | |
4445 | ||
4446 | BFD_ASSERT (h->dynindx != -1); | |
4447 | ||
4448 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4449 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4450 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4451 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4452 | ||
4453 | /* Get the index in the procedure linkage table which | |
4454 | corresponds to this symbol. This is the index of this symbol | |
4455 | in all the symbols for which we are making plt entries. The | |
4456 | first entry in the procedure linkage table is reserved. */ | |
4457 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
4458 | / elf_mn10300_sizeof_plt (info)); | |
4459 | ||
4460 | /* Get the offset into the .got table of the entry that | |
4461 | corresponds to this function. Each .got entry is 4 bytes. | |
4462 | The first three are reserved. */ | |
4463 | got_offset = (plt_index + 3) * 4; | |
4464 | ||
4465 | /* Fill in the entry in the procedure linkage table. */ | |
4466 | if (! info->shared) | |
4467 | { | |
4468 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
4469 | elf_mn10300_sizeof_plt (info)); | |
4470 | bfd_put_32 (output_bfd, | |
4471 | (sgot->output_section->vma | |
4472 | + sgot->output_offset | |
4473 | + got_offset), | |
4474 | (splt->contents + h->plt.offset | |
4475 | + elf_mn10300_plt_symbol_offset (info))); | |
4476 | ||
4477 | bfd_put_32 (output_bfd, | |
4478 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
4479 | (splt->contents + h->plt.offset | |
4480 | + elf_mn10300_plt_plt0_offset (info))); | |
4481 | } | |
4482 | else | |
4483 | { | |
4484 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
4485 | elf_mn10300_sizeof_plt (info)); | |
4486 | ||
4487 | bfd_put_32 (output_bfd, got_offset, | |
4488 | (splt->contents + h->plt.offset | |
4489 | + elf_mn10300_plt_symbol_offset (info))); | |
4490 | } | |
4491 | ||
4492 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4493 | (splt->contents + h->plt.offset | |
4494 | + elf_mn10300_plt_reloc_offset (info))); | |
4495 | ||
4496 | /* Fill in the entry in the global offset table. */ | |
4497 | bfd_put_32 (output_bfd, | |
4498 | (splt->output_section->vma | |
4499 | + splt->output_offset | |
4500 | + h->plt.offset | |
4501 | + elf_mn10300_plt_temp_offset (info)), | |
4502 | sgot->contents + got_offset); | |
4503 | ||
4504 | /* Fill in the entry in the .rela.plt section. */ | |
4505 | rel.r_offset = (sgot->output_section->vma | |
4506 | + sgot->output_offset | |
4507 | + got_offset); | |
4508 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
4509 | rel.r_addend = 0; | |
4510 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4511 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4512 | + plt_index)); | |
03a12831 | 4513 | |
f5385ebf | 4514 | if (!h->def_regular) |
03a12831 AO |
4515 | /* Mark the symbol as undefined, rather than as defined in |
4516 | the .plt section. Leave the value alone. */ | |
4517 | sym->st_shndx = SHN_UNDEF; | |
4518 | } | |
4519 | ||
4520 | if (h->got.offset != (bfd_vma) -1) | |
4521 | { | |
4522 | asection * sgot; | |
4523 | asection * srel; | |
4524 | Elf_Internal_Rela rel; | |
4525 | ||
4526 | /* This symbol has an entry in the global offset table. Set it up. */ | |
4527 | ||
4528 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4529 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4530 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4531 | ||
4532 | rel.r_offset = (sgot->output_section->vma | |
4533 | + sgot->output_offset | |
4534 | + (h->got.offset &~ 1)); | |
4535 | ||
4536 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4537 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4538 | the symbol was forced to be local because of a version file. | |
4539 | The entry in the global offset table will already have been | |
4540 | initialized in the relocate_section function. */ | |
4541 | if (info->shared | |
4542 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 4543 | && h->def_regular) |
03a12831 AO |
4544 | { |
4545 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
4546 | rel.r_addend = (h->root.u.def.value | |
4547 | + h->root.u.def.section->output_section->vma | |
4548 | + h->root.u.def.section->output_offset); | |
4549 | } | |
4550 | else | |
4551 | { | |
4552 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4553 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
4554 | rel.r_addend = 0; | |
4555 | } | |
4556 | ||
4557 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4558 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4559 | + srel->reloc_count)); | |
03a12831 AO |
4560 | ++ srel->reloc_count; |
4561 | } | |
4562 | ||
f5385ebf | 4563 | if (h->needs_copy) |
03a12831 AO |
4564 | { |
4565 | asection * s; | |
4566 | Elf_Internal_Rela rel; | |
4567 | ||
4568 | /* This symbol needs a copy reloc. Set it up. */ | |
4569 | BFD_ASSERT (h->dynindx != -1 | |
4570 | && (h->root.type == bfd_link_hash_defined | |
4571 | || h->root.type == bfd_link_hash_defweak)); | |
4572 | ||
4573 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4574 | ".rela.bss"); | |
4575 | BFD_ASSERT (s != NULL); | |
4576 | ||
4577 | rel.r_offset = (h->root.u.def.value | |
4578 | + h->root.u.def.section->output_section->vma | |
4579 | + h->root.u.def.section->output_offset); | |
4580 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
4581 | rel.r_addend = 0; | |
4582 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4583 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
4584 | + s->reloc_count)); | |
03a12831 AO |
4585 | ++ s->reloc_count; |
4586 | } | |
4587 | ||
4588 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
4589 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 4590 | || h == elf_hash_table (info)->hgot) |
03a12831 AO |
4591 | sym->st_shndx = SHN_ABS; |
4592 | ||
4593 | return TRUE; | |
4594 | } | |
4595 | ||
4596 | /* Finish up the dynamic sections. */ | |
4597 | ||
4598 | static bfd_boolean | |
4599 | _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info) | |
4600 | bfd * output_bfd; | |
4601 | struct bfd_link_info * info; | |
4602 | { | |
4603 | bfd * dynobj; | |
4604 | asection * sgot; | |
4605 | asection * sdyn; | |
4606 | ||
4607 | dynobj = elf_hash_table (info)->dynobj; | |
4608 | ||
4609 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4610 | BFD_ASSERT (sgot != NULL); | |
4611 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4612 | ||
4613 | if (elf_hash_table (info)->dynamic_sections_created) | |
4614 | { | |
4615 | asection * splt; | |
4616 | Elf32_External_Dyn * dyncon; | |
4617 | Elf32_External_Dyn * dynconend; | |
4618 | ||
4619 | BFD_ASSERT (sdyn != NULL); | |
4620 | ||
4621 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4622 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
03a12831 AO |
4623 | |
4624 | for (; dyncon < dynconend; dyncon++) | |
4625 | { | |
4626 | Elf_Internal_Dyn dyn; | |
4627 | const char * name; | |
4628 | asection * s; | |
4629 | ||
4630 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4631 | ||
4632 | switch (dyn.d_tag) | |
4633 | { | |
4634 | default: | |
4635 | break; | |
4636 | ||
4637 | case DT_PLTGOT: | |
4638 | name = ".got"; | |
4639 | goto get_vma; | |
4640 | ||
4641 | case DT_JMPREL: | |
4642 | name = ".rela.plt"; | |
4643 | get_vma: | |
4644 | s = bfd_get_section_by_name (output_bfd, name); | |
4645 | BFD_ASSERT (s != NULL); | |
4646 | dyn.d_un.d_ptr = s->vma; | |
4647 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4648 | break; | |
4649 | ||
4650 | case DT_PLTRELSZ: | |
4651 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4652 | BFD_ASSERT (s != NULL); | |
eea6121a | 4653 | dyn.d_un.d_val = s->size; |
03a12831 AO |
4654 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4655 | break; | |
4656 | ||
4657 | case DT_RELASZ: | |
4658 | /* My reading of the SVR4 ABI indicates that the | |
4659 | procedure linkage table relocs (DT_JMPREL) should be | |
4660 | included in the overall relocs (DT_RELA). This is | |
4661 | what Solaris does. However, UnixWare can not handle | |
4662 | that case. Therefore, we override the DT_RELASZ entry | |
4663 | here to make it not include the JMPREL relocs. Since | |
4664 | the linker script arranges for .rela.plt to follow all | |
4665 | other relocation sections, we don't have to worry | |
4666 | about changing the DT_RELA entry. */ | |
4667 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4668 | if (s != NULL) | |
eea6121a | 4669 | dyn.d_un.d_val -= s->size; |
03a12831 AO |
4670 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4671 | break; | |
4672 | } | |
4673 | } | |
4674 | ||
4675 | /* Fill in the first entry in the procedure linkage table. */ | |
4676 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
eea6121a | 4677 | if (splt && splt->size > 0) |
03a12831 AO |
4678 | { |
4679 | if (info->shared) | |
4680 | { | |
4681 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
4682 | elf_mn10300_sizeof_plt (info)); | |
4683 | } | |
4684 | else | |
4685 | { | |
4686 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
4687 | bfd_put_32 (output_bfd, | |
4688 | sgot->output_section->vma + sgot->output_offset + 4, | |
4689 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
4690 | bfd_put_32 (output_bfd, | |
4691 | sgot->output_section->vma + sgot->output_offset + 8, | |
4692 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
4693 | } | |
4694 | ||
4695 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4696 | really seem like the right value. */ | |
4697 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4698 | } | |
4699 | } | |
4700 | ||
4701 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4702 | if (sgot->size > 0) |
03a12831 AO |
4703 | { |
4704 | if (sdyn == NULL) | |
4705 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4706 | else | |
4707 | bfd_put_32 (output_bfd, | |
4708 | sdyn->output_section->vma + sdyn->output_offset, | |
4709 | sgot->contents); | |
4710 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4711 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4712 | } | |
4713 | ||
4714 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4715 | ||
4716 | return TRUE; | |
4717 | } | |
4718 | ||
a873f25a AO |
4719 | /* Classify relocation types, such that combreloc can sort them |
4720 | properly. */ | |
4721 | ||
4722 | static enum elf_reloc_type_class | |
4723 | _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
4724 | { | |
4725 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
4726 | { | |
4727 | case R_MN10300_RELATIVE: | |
4728 | return reloc_class_relative; | |
4729 | case R_MN10300_JMP_SLOT: | |
4730 | return reloc_class_plt; | |
4731 | case R_MN10300_COPY: | |
4732 | return reloc_class_copy; | |
4733 | default: | |
4734 | return reloc_class_normal; | |
4735 | } | |
4736 | } | |
4737 | ||
73c3cd1c | 4738 | #ifndef ELF_ARCH |
252b5132 RH |
4739 | #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
4740 | #define TARGET_LITTLE_NAME "elf32-mn10300" | |
4741 | #define ELF_ARCH bfd_arch_mn10300 | |
6f4514dc AO |
4742 | #define ELF_MACHINE_CODE EM_MN10300 |
4743 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 4744 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 4745 | #endif |
252b5132 RH |
4746 | |
4747 | #define elf_info_to_howto mn10300_info_to_howto | |
4748 | #define elf_info_to_howto_rel 0 | |
4749 | #define elf_backend_can_gc_sections 1 | |
b491616a | 4750 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4751 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
4752 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
4753 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
4754 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
4755 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4756 | mn10300_elf_get_relocated_section_contents | |
4757 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4758 | elf32_mn10300_link_hash_table_create | |
e2d34d7d DJ |
4759 | #define bfd_elf32_bfd_link_hash_table_free \ |
4760 | elf32_mn10300_link_hash_table_free | |
252b5132 | 4761 | |
73c3cd1c | 4762 | #ifndef elf_symbol_leading_char |
252b5132 | 4763 | #define elf_symbol_leading_char '_' |
73c3cd1c | 4764 | #endif |
252b5132 RH |
4765 | |
4766 | /* So we can set bits in e_flags. */ | |
4767 | #define elf_backend_final_write_processing \ | |
3b36f7e6 AM |
4768 | _bfd_mn10300_elf_final_write_processing |
4769 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
252b5132 RH |
4770 | |
4771 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3b36f7e6 | 4772 | _bfd_mn10300_elf_merge_private_bfd_data |
252b5132 | 4773 | |
03a12831 AO |
4774 | #define elf_backend_can_gc_sections 1 |
4775 | #define elf_backend_create_dynamic_sections \ | |
4776 | _bfd_mn10300_elf_create_dynamic_sections | |
4777 | #define elf_backend_adjust_dynamic_symbol \ | |
4778 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
4779 | #define elf_backend_size_dynamic_sections \ | |
4780 | _bfd_mn10300_elf_size_dynamic_sections | |
4781 | #define elf_backend_finish_dynamic_symbol \ | |
4782 | _bfd_mn10300_elf_finish_dynamic_symbol | |
4783 | #define elf_backend_finish_dynamic_sections \ | |
4784 | _bfd_mn10300_elf_finish_dynamic_sections | |
4785 | ||
a873f25a AO |
4786 | #define elf_backend_reloc_type_class \ |
4787 | _bfd_mn10300_elf_reloc_type_class | |
4788 | ||
03a12831 AO |
4789 | #define elf_backend_want_got_plt 1 |
4790 | #define elf_backend_plt_readonly 1 | |
4791 | #define elf_backend_want_plt_sym 0 | |
4792 | #define elf_backend_got_header_size 12 | |
03a12831 | 4793 | |
252b5132 | 4794 | #include "elf32-target.h" |