Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Hitachi SH specific support for 32-bit ELF |
7898deda NC |
2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Contributed by Ian Lance Taylor, Cygnus Support. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/sh.h" | |
28 | ||
29 | static bfd_reloc_status_type sh_elf_reloc | |
30 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
31 | static bfd_reloc_status_type sh_elf_ignore_reloc | |
32 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
33 | static reloc_howto_type *sh_elf_reloc_type_lookup | |
34 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
35 | static void sh_elf_info_to_howto | |
36 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
d4845d57 JR |
37 | static boolean sh_elf_set_private_flags |
38 | PARAMS ((bfd *, flagword)); | |
39 | static boolean sh_elf_copy_private_data | |
40 | PARAMS ((bfd *, bfd *)); | |
41 | static boolean sh_elf_merge_private_data | |
42 | PARAMS ((bfd *, bfd *)); | |
1630fd2b | 43 | static boolean sh_elf_set_mach_from_flags |
d4845d57 | 44 | PARAMS ((bfd *)); |
252b5132 RH |
45 | static boolean sh_elf_relax_section |
46 | PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); | |
47 | static boolean sh_elf_relax_delete_bytes | |
48 | PARAMS ((bfd *, asection *, bfd_vma, int)); | |
49 | static boolean sh_elf_align_loads | |
50 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, boolean *)); | |
51 | static boolean sh_elf_swap_insns | |
52 | PARAMS ((bfd *, asection *, PTR, bfd_byte *, bfd_vma)); | |
53 | static boolean sh_elf_relocate_section | |
54 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
55 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
56 | static bfd_byte *sh_elf_get_relocated_section_contents | |
57 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
58 | bfd_byte *, boolean, asymbol **)); | |
37c644f2 AO |
59 | static boolean sh_elf_check_relocs |
60 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
61 | const Elf_Internal_Rela *)); | |
62 | static struct bfd_hash_entry *sh_elf_link_hash_newfunc | |
63 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
64 | static struct bfd_link_hash_table *sh_elf_link_hash_table_create | |
65 | PARAMS ((bfd *)); | |
66 | static boolean sh_elf_adjust_dynamic_symbol | |
67 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
68 | static boolean sh_elf_size_dynamic_sections | |
69 | PARAMS ((bfd *, struct bfd_link_info *)); | |
70 | static boolean sh_elf_finish_dynamic_symbol | |
71 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
72 | Elf_Internal_Sym *)); | |
73 | static boolean sh_elf_finish_dynamic_sections | |
74 | PARAMS ((bfd *, struct bfd_link_info *)); | |
917583ad NC |
75 | static bfd_reloc_status_type sh_elf_reloc_loop |
76 | PARAMS ((int, bfd *, asection *, bfd_byte *, bfd_vma, asection *, | |
77 | bfd_vma, bfd_vma)); | |
78 | static boolean sh_elf_create_dynamic_sections | |
79 | PARAMS ((bfd *, struct bfd_link_info *)); | |
80 | static asection * sh_elf_gc_mark_hook | |
81 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
82 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
83 | static boolean sh_elf_gc_sweep_hook | |
84 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
85 | const Elf_Internal_Rela *)); | |
37c644f2 AO |
86 | |
87 | /* The name of the dynamic interpreter. This is put in the .interp | |
88 | section. */ | |
89 | ||
90 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
252b5132 | 91 | |
38b1a46c NC |
92 | static reloc_howto_type sh_elf_howto_table[] = |
93 | { | |
252b5132 RH |
94 | /* No relocation. */ |
95 | HOWTO (R_SH_NONE, /* type */ | |
96 | 0, /* rightshift */ | |
97 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
98 | 0, /* bitsize */ | |
99 | false, /* pc_relative */ | |
100 | 0, /* bitpos */ | |
101 | complain_overflow_dont, /* complain_on_overflow */ | |
015551fc | 102 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
103 | "R_SH_NONE", /* name */ |
104 | false, /* partial_inplace */ | |
105 | 0, /* src_mask */ | |
106 | 0, /* dst_mask */ | |
107 | false), /* pcrel_offset */ | |
108 | ||
109 | /* 32 bit absolute relocation. Setting partial_inplace to true and | |
110 | src_mask to a non-zero value is similar to the COFF toolchain. */ | |
111 | HOWTO (R_SH_DIR32, /* type */ | |
112 | 0, /* rightshift */ | |
113 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
114 | 32, /* bitsize */ | |
115 | false, /* pc_relative */ | |
116 | 0, /* bitpos */ | |
117 | complain_overflow_bitfield, /* complain_on_overflow */ | |
118 | sh_elf_reloc, /* special_function */ | |
119 | "R_SH_DIR32", /* name */ | |
120 | true, /* partial_inplace */ | |
121 | 0xffffffff, /* src_mask */ | |
122 | 0xffffffff, /* dst_mask */ | |
123 | false), /* pcrel_offset */ | |
124 | ||
125 | /* 32 bit PC relative relocation. */ | |
126 | HOWTO (R_SH_REL32, /* type */ | |
127 | 0, /* rightshift */ | |
128 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
129 | 32, /* bitsize */ | |
130 | true, /* pc_relative */ | |
131 | 0, /* bitpos */ | |
132 | complain_overflow_signed, /* complain_on_overflow */ | |
015551fc | 133 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
134 | "R_SH_REL32", /* name */ |
135 | false, /* partial_inplace */ | |
136 | 0, /* src_mask */ | |
137 | 0xffffffff, /* dst_mask */ | |
138 | true), /* pcrel_offset */ | |
139 | ||
140 | /* 8 bit PC relative branch divided by 2. */ | |
141 | HOWTO (R_SH_DIR8WPN, /* type */ | |
142 | 1, /* rightshift */ | |
143 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
144 | 8, /* bitsize */ | |
145 | true, /* pc_relative */ | |
146 | 0, /* bitpos */ | |
147 | complain_overflow_signed, /* complain_on_overflow */ | |
015551fc | 148 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
149 | "R_SH_DIR8WPN", /* name */ |
150 | true, /* partial_inplace */ | |
151 | 0xff, /* src_mask */ | |
152 | 0xff, /* dst_mask */ | |
153 | true), /* pcrel_offset */ | |
154 | ||
155 | /* 12 bit PC relative branch divided by 2. */ | |
156 | HOWTO (R_SH_IND12W, /* type */ | |
157 | 1, /* rightshift */ | |
158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
159 | 12, /* bitsize */ | |
160 | true, /* pc_relative */ | |
161 | 0, /* bitpos */ | |
162 | complain_overflow_signed, /* complain_on_overflow */ | |
163 | sh_elf_reloc, /* special_function */ | |
164 | "R_SH_IND12W", /* name */ | |
165 | true, /* partial_inplace */ | |
166 | 0xfff, /* src_mask */ | |
167 | 0xfff, /* dst_mask */ | |
168 | true), /* pcrel_offset */ | |
169 | ||
170 | /* 8 bit unsigned PC relative divided by 4. */ | |
171 | HOWTO (R_SH_DIR8WPL, /* type */ | |
172 | 2, /* rightshift */ | |
173 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
174 | 8, /* bitsize */ | |
175 | true, /* pc_relative */ | |
176 | 0, /* bitpos */ | |
177 | complain_overflow_unsigned, /* complain_on_overflow */ | |
015551fc | 178 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
179 | "R_SH_DIR8WPL", /* name */ |
180 | true, /* partial_inplace */ | |
181 | 0xff, /* src_mask */ | |
182 | 0xff, /* dst_mask */ | |
183 | true), /* pcrel_offset */ | |
184 | ||
185 | /* 8 bit unsigned PC relative divided by 2. */ | |
186 | HOWTO (R_SH_DIR8WPZ, /* type */ | |
187 | 1, /* rightshift */ | |
188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
189 | 8, /* bitsize */ | |
190 | true, /* pc_relative */ | |
191 | 0, /* bitpos */ | |
192 | complain_overflow_unsigned, /* complain_on_overflow */ | |
015551fc | 193 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
194 | "R_SH_DIR8WPZ", /* name */ |
195 | true, /* partial_inplace */ | |
196 | 0xff, /* src_mask */ | |
197 | 0xff, /* dst_mask */ | |
198 | true), /* pcrel_offset */ | |
199 | ||
200 | /* 8 bit GBR relative. FIXME: This only makes sense if we have some | |
201 | special symbol for the GBR relative area, and that is not | |
202 | implemented. */ | |
203 | HOWTO (R_SH_DIR8BP, /* type */ | |
204 | 0, /* rightshift */ | |
205 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
206 | 8, /* bitsize */ | |
207 | false, /* pc_relative */ | |
208 | 0, /* bitpos */ | |
209 | complain_overflow_unsigned, /* complain_on_overflow */ | |
015551fc | 210 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
211 | "R_SH_DIR8BP", /* name */ |
212 | false, /* partial_inplace */ | |
213 | 0, /* src_mask */ | |
214 | 0xff, /* dst_mask */ | |
215 | true), /* pcrel_offset */ | |
216 | ||
217 | /* 8 bit GBR relative divided by 2. FIXME: This only makes sense if | |
218 | we have some special symbol for the GBR relative area, and that | |
219 | is not implemented. */ | |
220 | HOWTO (R_SH_DIR8W, /* type */ | |
221 | 1, /* rightshift */ | |
222 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
223 | 8, /* bitsize */ | |
224 | false, /* pc_relative */ | |
225 | 0, /* bitpos */ | |
226 | complain_overflow_unsigned, /* complain_on_overflow */ | |
015551fc | 227 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
228 | "R_SH_DIR8W", /* name */ |
229 | false, /* partial_inplace */ | |
230 | 0, /* src_mask */ | |
231 | 0xff, /* dst_mask */ | |
232 | true), /* pcrel_offset */ | |
233 | ||
234 | /* 8 bit GBR relative divided by 4. FIXME: This only makes sense if | |
235 | we have some special symbol for the GBR relative area, and that | |
236 | is not implemented. */ | |
237 | HOWTO (R_SH_DIR8L, /* type */ | |
238 | 2, /* rightshift */ | |
239 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
240 | 8, /* bitsize */ | |
241 | false, /* pc_relative */ | |
242 | 0, /* bitpos */ | |
243 | complain_overflow_unsigned, /* complain_on_overflow */ | |
015551fc | 244 | sh_elf_ignore_reloc, /* special_function */ |
252b5132 RH |
245 | "R_SH_DIR8L", /* name */ |
246 | false, /* partial_inplace */ | |
247 | 0, /* src_mask */ | |
248 | 0xff, /* dst_mask */ | |
249 | true), /* pcrel_offset */ | |
250 | ||
06bb75c1 AO |
251 | EMPTY_HOWTO (10), |
252 | EMPTY_HOWTO (11), | |
253 | EMPTY_HOWTO (12), | |
254 | EMPTY_HOWTO (13), | |
255 | EMPTY_HOWTO (14), | |
256 | EMPTY_HOWTO (15), | |
257 | EMPTY_HOWTO (16), | |
258 | EMPTY_HOWTO (17), | |
5f771d47 ILT |
259 | EMPTY_HOWTO (18), |
260 | EMPTY_HOWTO (19), | |
261 | EMPTY_HOWTO (20), | |
262 | EMPTY_HOWTO (21), | |
263 | EMPTY_HOWTO (22), | |
264 | EMPTY_HOWTO (23), | |
265 | EMPTY_HOWTO (24), | |
252b5132 RH |
266 | |
267 | /* The remaining relocs are a GNU extension used for relaxing. The | |
268 | final pass of the linker never needs to do anything with any of | |
269 | these relocs. Any required operations are handled by the | |
270 | relaxation code. */ | |
271 | ||
272 | /* A 16 bit switch table entry. This is generated for an expression | |
273 | such as ``.word L1 - L2''. The offset holds the difference | |
274 | between the reloc address and L2. */ | |
275 | HOWTO (R_SH_SWITCH16, /* type */ | |
276 | 0, /* rightshift */ | |
277 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
278 | 16, /* bitsize */ | |
279 | false, /* pc_relative */ | |
280 | 0, /* bitpos */ | |
281 | complain_overflow_unsigned, /* complain_on_overflow */ | |
282 | sh_elf_ignore_reloc, /* special_function */ | |
283 | "R_SH_SWITCH16", /* name */ | |
284 | false, /* partial_inplace */ | |
285 | 0, /* src_mask */ | |
286 | 0, /* dst_mask */ | |
287 | true), /* pcrel_offset */ | |
288 | ||
289 | /* A 32 bit switch table entry. This is generated for an expression | |
290 | such as ``.long L1 - L2''. The offset holds the difference | |
291 | between the reloc address and L2. */ | |
292 | HOWTO (R_SH_SWITCH32, /* type */ | |
293 | 0, /* rightshift */ | |
294 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
295 | 32, /* bitsize */ | |
296 | false, /* pc_relative */ | |
297 | 0, /* bitpos */ | |
298 | complain_overflow_unsigned, /* complain_on_overflow */ | |
299 | sh_elf_ignore_reloc, /* special_function */ | |
300 | "R_SH_SWITCH32", /* name */ | |
301 | false, /* partial_inplace */ | |
302 | 0, /* src_mask */ | |
303 | 0, /* dst_mask */ | |
304 | true), /* pcrel_offset */ | |
305 | ||
306 | /* Indicates a .uses pseudo-op. The compiler will generate .uses | |
307 | pseudo-ops when it finds a function call which can be relaxed. | |
308 | The offset field holds the PC relative offset to the instruction | |
309 | which loads the register used in the function call. */ | |
310 | HOWTO (R_SH_USES, /* type */ | |
311 | 0, /* rightshift */ | |
312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 0, /* bitsize */ | |
314 | false, /* pc_relative */ | |
315 | 0, /* bitpos */ | |
316 | complain_overflow_unsigned, /* complain_on_overflow */ | |
317 | sh_elf_ignore_reloc, /* special_function */ | |
318 | "R_SH_USES", /* name */ | |
319 | false, /* partial_inplace */ | |
320 | 0, /* src_mask */ | |
321 | 0, /* dst_mask */ | |
322 | true), /* pcrel_offset */ | |
323 | ||
324 | /* The assembler will generate this reloc for addresses referred to | |
325 | by the register loads associated with USES relocs. The offset | |
326 | field holds the number of times the address is referenced in the | |
327 | object file. */ | |
328 | HOWTO (R_SH_COUNT, /* type */ | |
329 | 0, /* rightshift */ | |
330 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
331 | 0, /* bitsize */ | |
332 | false, /* pc_relative */ | |
333 | 0, /* bitpos */ | |
334 | complain_overflow_unsigned, /* complain_on_overflow */ | |
335 | sh_elf_ignore_reloc, /* special_function */ | |
336 | "R_SH_COUNT", /* name */ | |
337 | false, /* partial_inplace */ | |
338 | 0, /* src_mask */ | |
339 | 0, /* dst_mask */ | |
340 | true), /* pcrel_offset */ | |
341 | ||
342 | /* Indicates an alignment statement. The offset field is the power | |
343 | of 2 to which subsequent portions of the object file must be | |
344 | aligned. */ | |
345 | HOWTO (R_SH_ALIGN, /* type */ | |
346 | 0, /* rightshift */ | |
347 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 0, /* bitsize */ | |
349 | false, /* pc_relative */ | |
350 | 0, /* bitpos */ | |
351 | complain_overflow_unsigned, /* complain_on_overflow */ | |
352 | sh_elf_ignore_reloc, /* special_function */ | |
353 | "R_SH_ALIGN", /* name */ | |
354 | false, /* partial_inplace */ | |
355 | 0, /* src_mask */ | |
356 | 0, /* dst_mask */ | |
357 | true), /* pcrel_offset */ | |
358 | ||
359 | /* The assembler will generate this reloc before a block of | |
360 | instructions. A section should be processed as assumining it | |
361 | contains data, unless this reloc is seen. */ | |
362 | HOWTO (R_SH_CODE, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 0, /* bitsize */ | |
366 | false, /* pc_relative */ | |
367 | 0, /* bitpos */ | |
368 | complain_overflow_unsigned, /* complain_on_overflow */ | |
369 | sh_elf_ignore_reloc, /* special_function */ | |
370 | "R_SH_CODE", /* name */ | |
371 | false, /* partial_inplace */ | |
372 | 0, /* src_mask */ | |
373 | 0, /* dst_mask */ | |
374 | true), /* pcrel_offset */ | |
375 | ||
376 | /* The assembler will generate this reloc after a block of | |
377 | instructions when it sees data that is not instructions. */ | |
378 | HOWTO (R_SH_DATA, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 0, /* bitsize */ | |
382 | false, /* pc_relative */ | |
383 | 0, /* bitpos */ | |
384 | complain_overflow_unsigned, /* complain_on_overflow */ | |
385 | sh_elf_ignore_reloc, /* special_function */ | |
386 | "R_SH_DATA", /* name */ | |
387 | false, /* partial_inplace */ | |
388 | 0, /* src_mask */ | |
389 | 0, /* dst_mask */ | |
390 | true), /* pcrel_offset */ | |
391 | ||
392 | /* The assembler generates this reloc for each label within a block | |
393 | of instructions. This permits the linker to avoid swapping | |
394 | instructions which are the targets of branches. */ | |
395 | HOWTO (R_SH_LABEL, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 0, /* bitsize */ | |
399 | false, /* pc_relative */ | |
400 | 0, /* bitpos */ | |
401 | complain_overflow_unsigned, /* complain_on_overflow */ | |
402 | sh_elf_ignore_reloc, /* special_function */ | |
403 | "R_SH_LABEL", /* name */ | |
404 | false, /* partial_inplace */ | |
405 | 0, /* src_mask */ | |
406 | 0, /* dst_mask */ | |
407 | true), /* pcrel_offset */ | |
408 | ||
409 | /* An 8 bit switch table entry. This is generated for an expression | |
410 | such as ``.word L1 - L2''. The offset holds the difference | |
411 | between the reloc address and L2. */ | |
412 | HOWTO (R_SH_SWITCH8, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 8, /* bitsize */ | |
416 | false, /* pc_relative */ | |
417 | 0, /* bitpos */ | |
418 | complain_overflow_unsigned, /* complain_on_overflow */ | |
419 | sh_elf_ignore_reloc, /* special_function */ | |
420 | "R_SH_SWITCH8", /* name */ | |
421 | false, /* partial_inplace */ | |
422 | 0, /* src_mask */ | |
423 | 0, /* dst_mask */ | |
424 | true), /* pcrel_offset */ | |
425 | ||
426 | /* GNU extension to record C++ vtable hierarchy */ | |
427 | HOWTO (R_SH_GNU_VTINHERIT, /* type */ | |
428 | 0, /* rightshift */ | |
429 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 0, /* bitsize */ | |
431 | false, /* pc_relative */ | |
432 | 0, /* bitpos */ | |
433 | complain_overflow_dont, /* complain_on_overflow */ | |
434 | NULL, /* special_function */ | |
435 | "R_SH_GNU_VTINHERIT", /* name */ | |
436 | false, /* partial_inplace */ | |
437 | 0, /* src_mask */ | |
438 | 0, /* dst_mask */ | |
439 | false), /* pcrel_offset */ | |
440 | ||
441 | /* GNU extension to record C++ vtable member usage */ | |
442 | HOWTO (R_SH_GNU_VTENTRY, /* type */ | |
443 | 0, /* rightshift */ | |
444 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 0, /* bitsize */ | |
446 | false, /* pc_relative */ | |
447 | 0, /* bitpos */ | |
448 | complain_overflow_dont, /* complain_on_overflow */ | |
449 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
450 | "R_SH_GNU_VTENTRY", /* name */ | |
451 | false, /* partial_inplace */ | |
452 | 0, /* src_mask */ | |
453 | 0, /* dst_mask */ | |
454 | false), /* pcrel_offset */ | |
455 | ||
015551fc JR |
456 | /* 8 bit PC relative divided by 2 - but specified in a very odd way. */ |
457 | HOWTO (R_SH_LOOP_START, /* type */ | |
458 | 1, /* rightshift */ | |
459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 8, /* bitsize */ | |
461 | false, /* pc_relative */ | |
462 | 0, /* bitpos */ | |
463 | complain_overflow_signed, /* complain_on_overflow */ | |
464 | sh_elf_ignore_reloc, /* special_function */ | |
465 | "R_SH_LOOP_START", /* name */ | |
466 | true, /* partial_inplace */ | |
467 | 0xff, /* src_mask */ | |
468 | 0xff, /* dst_mask */ | |
469 | true), /* pcrel_offset */ | |
470 | ||
471 | /* 8 bit PC relative divided by 2 - but specified in a very odd way. */ | |
472 | HOWTO (R_SH_LOOP_END, /* type */ | |
473 | 1, /* rightshift */ | |
474 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
475 | 8, /* bitsize */ | |
476 | false, /* pc_relative */ | |
477 | 0, /* bitpos */ | |
478 | complain_overflow_signed, /* complain_on_overflow */ | |
479 | sh_elf_ignore_reloc, /* special_function */ | |
480 | "R_SH_LOOP_END", /* name */ | |
481 | true, /* partial_inplace */ | |
482 | 0xff, /* src_mask */ | |
483 | 0xff, /* dst_mask */ | |
484 | true), /* pcrel_offset */ | |
485 | ||
06bb75c1 AO |
486 | EMPTY_HOWTO (38), |
487 | EMPTY_HOWTO (39), | |
488 | EMPTY_HOWTO (40), | |
489 | EMPTY_HOWTO (41), | |
490 | EMPTY_HOWTO (42), | |
491 | EMPTY_HOWTO (43), | |
492 | EMPTY_HOWTO (44), | |
493 | EMPTY_HOWTO (45), | |
494 | EMPTY_HOWTO (46), | |
495 | EMPTY_HOWTO (47), | |
496 | EMPTY_HOWTO (48), | |
497 | EMPTY_HOWTO (49), | |
498 | EMPTY_HOWTO (50), | |
499 | EMPTY_HOWTO (51), | |
500 | EMPTY_HOWTO (52), | |
501 | EMPTY_HOWTO (53), | |
502 | EMPTY_HOWTO (54), | |
503 | EMPTY_HOWTO (55), | |
504 | EMPTY_HOWTO (56), | |
505 | EMPTY_HOWTO (57), | |
506 | EMPTY_HOWTO (58), | |
507 | EMPTY_HOWTO (59), | |
508 | EMPTY_HOWTO (60), | |
509 | EMPTY_HOWTO (61), | |
510 | EMPTY_HOWTO (62), | |
511 | EMPTY_HOWTO (63), | |
512 | EMPTY_HOWTO (64), | |
513 | EMPTY_HOWTO (65), | |
514 | EMPTY_HOWTO (66), | |
515 | EMPTY_HOWTO (67), | |
516 | EMPTY_HOWTO (68), | |
517 | EMPTY_HOWTO (69), | |
518 | EMPTY_HOWTO (70), | |
519 | EMPTY_HOWTO (71), | |
520 | EMPTY_HOWTO (72), | |
521 | EMPTY_HOWTO (73), | |
522 | EMPTY_HOWTO (74), | |
523 | EMPTY_HOWTO (75), | |
524 | EMPTY_HOWTO (76), | |
525 | EMPTY_HOWTO (77), | |
526 | EMPTY_HOWTO (78), | |
527 | EMPTY_HOWTO (79), | |
528 | EMPTY_HOWTO (80), | |
529 | EMPTY_HOWTO (81), | |
530 | EMPTY_HOWTO (82), | |
531 | EMPTY_HOWTO (83), | |
532 | EMPTY_HOWTO (84), | |
533 | EMPTY_HOWTO (85), | |
534 | EMPTY_HOWTO (86), | |
535 | EMPTY_HOWTO (87), | |
536 | EMPTY_HOWTO (88), | |
537 | EMPTY_HOWTO (89), | |
538 | EMPTY_HOWTO (90), | |
539 | EMPTY_HOWTO (91), | |
540 | EMPTY_HOWTO (92), | |
541 | EMPTY_HOWTO (93), | |
542 | EMPTY_HOWTO (94), | |
543 | EMPTY_HOWTO (95), | |
544 | EMPTY_HOWTO (96), | |
545 | EMPTY_HOWTO (97), | |
546 | EMPTY_HOWTO (98), | |
547 | EMPTY_HOWTO (99), | |
548 | EMPTY_HOWTO (100), | |
549 | EMPTY_HOWTO (101), | |
550 | EMPTY_HOWTO (102), | |
551 | EMPTY_HOWTO (103), | |
552 | EMPTY_HOWTO (104), | |
553 | EMPTY_HOWTO (105), | |
554 | EMPTY_HOWTO (106), | |
555 | EMPTY_HOWTO (107), | |
556 | EMPTY_HOWTO (108), | |
557 | EMPTY_HOWTO (109), | |
558 | EMPTY_HOWTO (110), | |
559 | EMPTY_HOWTO (111), | |
560 | EMPTY_HOWTO (112), | |
561 | EMPTY_HOWTO (113), | |
562 | EMPTY_HOWTO (114), | |
563 | EMPTY_HOWTO (115), | |
564 | EMPTY_HOWTO (116), | |
565 | EMPTY_HOWTO (117), | |
566 | EMPTY_HOWTO (118), | |
567 | EMPTY_HOWTO (119), | |
568 | EMPTY_HOWTO (120), | |
569 | EMPTY_HOWTO (121), | |
570 | EMPTY_HOWTO (122), | |
571 | EMPTY_HOWTO (123), | |
572 | EMPTY_HOWTO (124), | |
573 | EMPTY_HOWTO (125), | |
574 | EMPTY_HOWTO (126), | |
575 | EMPTY_HOWTO (127), | |
576 | EMPTY_HOWTO (128), | |
577 | EMPTY_HOWTO (129), | |
578 | EMPTY_HOWTO (130), | |
579 | EMPTY_HOWTO (131), | |
580 | EMPTY_HOWTO (132), | |
581 | EMPTY_HOWTO (133), | |
582 | EMPTY_HOWTO (134), | |
583 | EMPTY_HOWTO (135), | |
584 | EMPTY_HOWTO (136), | |
585 | EMPTY_HOWTO (137), | |
586 | EMPTY_HOWTO (138), | |
587 | EMPTY_HOWTO (139), | |
588 | EMPTY_HOWTO (140), | |
589 | EMPTY_HOWTO (141), | |
590 | EMPTY_HOWTO (142), | |
591 | EMPTY_HOWTO (143), | |
592 | EMPTY_HOWTO (144), | |
593 | EMPTY_HOWTO (145), | |
594 | EMPTY_HOWTO (146), | |
595 | EMPTY_HOWTO (147), | |
596 | EMPTY_HOWTO (148), | |
597 | EMPTY_HOWTO (149), | |
598 | EMPTY_HOWTO (150), | |
599 | EMPTY_HOWTO (151), | |
600 | EMPTY_HOWTO (152), | |
601 | EMPTY_HOWTO (153), | |
602 | EMPTY_HOWTO (154), | |
603 | EMPTY_HOWTO (155), | |
604 | EMPTY_HOWTO (156), | |
605 | EMPTY_HOWTO (157), | |
606 | EMPTY_HOWTO (158), | |
607 | EMPTY_HOWTO (159), | |
608 | ||
609 | HOWTO (R_SH_GOT32, /* type */ | |
610 | 0, /* rightshift */ | |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 32, /* bitsize */ | |
613 | false, /* pc_relative */ | |
614 | 0, /* bitpos */ | |
615 | complain_overflow_bitfield, /* complain_on_overflow */ | |
616 | bfd_elf_generic_reloc, /* */ | |
617 | "R_SH_GOT32", /* name */ | |
618 | true, /* partial_inplace */ | |
619 | 0xffffffff, /* src_mask */ | |
620 | 0xffffffff, /* dst_mask */ | |
621 | false), /* pcrel_offset */ | |
622 | ||
623 | HOWTO (R_SH_PLT32, /* type */ | |
624 | 0, /* rightshift */ | |
625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 32, /* bitsize */ | |
627 | true, /* pc_relative */ | |
628 | 0, /* bitpos */ | |
629 | complain_overflow_bitfield, /* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* */ | |
631 | "R_SH_PLT32", /* name */ | |
632 | true, /* partial_inplace */ | |
633 | 0xffffffff, /* src_mask */ | |
634 | 0xffffffff, /* dst_mask */ | |
635 | true), /* pcrel_offset */ | |
636 | ||
637 | HOWTO (R_SH_COPY, /* type */ | |
638 | 0, /* rightshift */ | |
639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 32, /* bitsize */ | |
641 | false, /* pc_relative */ | |
642 | 0, /* bitpos */ | |
643 | complain_overflow_bitfield, /* complain_on_overflow */ | |
644 | bfd_elf_generic_reloc, /* */ | |
645 | "R_SH_COPY", /* name */ | |
646 | true, /* partial_inplace */ | |
647 | 0xffffffff, /* src_mask */ | |
648 | 0xffffffff, /* dst_mask */ | |
649 | false), /* pcrel_offset */ | |
650 | ||
651 | HOWTO (R_SH_GLOB_DAT, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 32, /* bitsize */ | |
655 | false, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_bitfield, /* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* */ | |
659 | "R_SH_GLOB_DAT", /* name */ | |
660 | true, /* partial_inplace */ | |
661 | 0xffffffff, /* src_mask */ | |
662 | 0xffffffff, /* dst_mask */ | |
663 | false), /* pcrel_offset */ | |
664 | ||
665 | HOWTO (R_SH_JMP_SLOT, /* type */ | |
666 | 0, /* rightshift */ | |
667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 32, /* bitsize */ | |
669 | false, /* pc_relative */ | |
670 | 0, /* bitpos */ | |
671 | complain_overflow_bitfield, /* complain_on_overflow */ | |
672 | bfd_elf_generic_reloc, /* */ | |
673 | "R_SH_JMP_SLOT", /* name */ | |
674 | true, /* partial_inplace */ | |
675 | 0xffffffff, /* src_mask */ | |
676 | 0xffffffff, /* dst_mask */ | |
677 | false), /* pcrel_offset */ | |
678 | ||
679 | HOWTO (R_SH_RELATIVE, /* type */ | |
680 | 0, /* rightshift */ | |
681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
682 | 32, /* bitsize */ | |
683 | false, /* pc_relative */ | |
684 | 0, /* bitpos */ | |
685 | complain_overflow_bitfield, /* complain_on_overflow */ | |
686 | bfd_elf_generic_reloc, /* */ | |
687 | "R_SH_RELATIVE", /* name */ | |
688 | true, /* partial_inplace */ | |
689 | 0xffffffff, /* src_mask */ | |
690 | 0xffffffff, /* dst_mask */ | |
691 | false), /* pcrel_offset */ | |
692 | ||
693 | HOWTO (R_SH_GOTOFF, /* type */ | |
694 | 0, /* rightshift */ | |
695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 32, /* bitsize */ | |
697 | false, /* pc_relative */ | |
698 | 0, /* bitpos */ | |
699 | complain_overflow_bitfield, /* complain_on_overflow */ | |
700 | bfd_elf_generic_reloc, /* */ | |
701 | "R_SH_GOTOFF", /* name */ | |
702 | true, /* partial_inplace */ | |
703 | 0xffffffff, /* src_mask */ | |
704 | 0xffffffff, /* dst_mask */ | |
705 | false), /* pcrel_offset */ | |
706 | ||
707 | HOWTO (R_SH_GOTPC, /* type */ | |
708 | 0, /* rightshift */ | |
709 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
710 | 32, /* bitsize */ | |
711 | true, /* pc_relative */ | |
712 | 0, /* bitpos */ | |
713 | complain_overflow_bitfield, /* complain_on_overflow */ | |
714 | bfd_elf_generic_reloc, /* */ | |
715 | "R_SH_GOTPC", /* name */ | |
716 | true, /* partial_inplace */ | |
717 | 0xffffffff, /* src_mask */ | |
718 | 0xffffffff, /* dst_mask */ | |
719 | true), /* pcrel_offset */ | |
720 | ||
252b5132 RH |
721 | }; |
722 | ||
015551fc JR |
723 | static bfd_reloc_status_type |
724 | sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, addr, | |
435b1e90 | 725 | symbol_section, start, end) |
61ff1804 | 726 | int r_type ATTRIBUTE_UNUSED; |
015551fc JR |
727 | bfd *input_bfd; |
728 | asection *input_section; | |
729 | bfd_byte *contents; | |
730 | bfd_vma addr; | |
731 | asection *symbol_section; | |
732 | bfd_vma start, end; | |
733 | { | |
734 | static bfd_vma last_addr; | |
00fdaf47 | 735 | static asection *last_symbol_section; |
015551fc JR |
736 | bfd_byte *free_contents = NULL; |
737 | bfd_byte *start_ptr, *ptr, *last_ptr; | |
738 | int diff, cum_diff; | |
739 | bfd_signed_vma x; | |
740 | int insn; | |
741 | ||
742 | /* Sanity check the address. */ | |
743 | if (addr > input_section->_raw_size) | |
744 | return bfd_reloc_outofrange; | |
745 | ||
746 | /* We require the start and end relocations to be processed consecutively - | |
747 | although we allow then to be processed forwards or backwards. */ | |
748 | if (! last_addr) | |
749 | { | |
750 | last_addr = addr; | |
751 | last_symbol_section = symbol_section; | |
752 | return bfd_reloc_ok; | |
753 | } | |
754 | if (last_addr != addr) | |
755 | abort (); | |
756 | last_addr = 0; | |
757 | ||
758 | if (! symbol_section || last_symbol_section != symbol_section || end < start) | |
759 | return bfd_reloc_outofrange; | |
760 | ||
761 | /* Get the symbol_section contents. */ | |
762 | if (symbol_section != input_section) | |
763 | { | |
764 | if (elf_section_data (symbol_section)->this_hdr.contents != NULL) | |
765 | contents = elf_section_data (symbol_section)->this_hdr.contents; | |
766 | else | |
767 | { | |
768 | free_contents = contents | |
769 | = (bfd_byte *) bfd_malloc (symbol_section->_raw_size); | |
770 | if (contents == NULL) | |
771 | return bfd_reloc_outofrange; | |
772 | if (! bfd_get_section_contents (input_bfd, symbol_section, contents, | |
773 | (file_ptr) 0, | |
774 | symbol_section->_raw_size)) | |
775 | { | |
776 | free (contents); | |
777 | return bfd_reloc_outofrange; | |
778 | } | |
779 | } | |
780 | } | |
781 | #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800) | |
782 | start_ptr = contents + start; | |
783 | for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;) | |
784 | { | |
785 | for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);) | |
786 | ptr -= 2; | |
787 | ptr += 2; | |
61ff1804 | 788 | diff = (last_ptr - ptr) >> 1; |
015551fc JR |
789 | cum_diff += diff & 1; |
790 | cum_diff += diff; | |
791 | } | |
792 | /* Calculate the start / end values to load into rs / re minus four - | |
793 | so that will cancel out the four we would otherwise have to add to | |
794 | addr to get the value to subtract in order to get relative addressing. */ | |
795 | if (cum_diff >= 0) | |
796 | { | |
797 | start -= 4; | |
798 | end = (ptr + cum_diff * 2) - contents; | |
799 | } | |
800 | else | |
801 | { | |
802 | bfd_vma start0 = start - 4; | |
803 | ||
a0fc8ba1 | 804 | while (start0 && IS_PPI (contents + start0)) |
015551fc JR |
805 | start0 -= 2; |
806 | start0 = start - 2 - ((start - start0) & 2); | |
807 | start = start0 - cum_diff - 2; | |
808 | end = start0; | |
809 | } | |
810 | ||
811 | if (free_contents) | |
812 | free (free_contents); | |
813 | ||
814 | insn = bfd_get_16 (input_bfd, contents + addr); | |
815 | ||
816 | x = (insn & 0x200 ? end : start) - addr; | |
817 | if (input_section != symbol_section) | |
818 | x += ((symbol_section->output_section->vma + symbol_section->output_offset) | |
819 | - (input_section->output_section->vma | |
820 | + input_section->output_offset)); | |
821 | x >>= 1; | |
822 | if (x < -128 || x > 127) | |
823 | return bfd_reloc_overflow; | |
824 | ||
61ff1804 | 825 | x = (insn & ~0xff) | (x & 0xff); |
015551fc JR |
826 | bfd_put_16 (input_bfd, x, contents + addr); |
827 | ||
828 | return bfd_reloc_ok; | |
829 | } | |
830 | ||
831 | /* This function is used for normal relocs. This used to be like the COFF | |
252b5132 RH |
832 | function, and is almost certainly incorrect for other ELF targets. */ |
833 | ||
834 | static bfd_reloc_status_type | |
835 | sh_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
435b1e90 | 836 | error_message) |
252b5132 RH |
837 | bfd *abfd; |
838 | arelent *reloc_entry; | |
839 | asymbol *symbol_in; | |
840 | PTR data; | |
841 | asection *input_section; | |
842 | bfd *output_bfd; | |
5f771d47 | 843 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
844 | { |
845 | unsigned long insn; | |
846 | bfd_vma sym_value; | |
847 | enum elf_sh_reloc_type r_type; | |
848 | bfd_vma addr = reloc_entry->address; | |
849 | bfd_byte *hit_data = addr + (bfd_byte *) data; | |
850 | ||
851 | r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type; | |
852 | ||
853 | if (output_bfd != NULL) | |
854 | { | |
855 | /* Partial linking--do nothing. */ | |
856 | reloc_entry->address += input_section->output_offset; | |
857 | return bfd_reloc_ok; | |
858 | } | |
859 | ||
860 | /* Almost all relocs have to do with relaxing. If any work must be | |
861 | done for them, it has been done in sh_relax_section. */ | |
015551fc | 862 | if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0) |
252b5132 RH |
863 | return bfd_reloc_ok; |
864 | ||
865 | if (symbol_in != NULL | |
866 | && bfd_is_und_section (symbol_in->section)) | |
867 | return bfd_reloc_undefined; | |
868 | ||
869 | if (bfd_is_com_section (symbol_in->section)) | |
435b1e90 KH |
870 | sym_value = 0; |
871 | else | |
252b5132 RH |
872 | sym_value = (symbol_in->value + |
873 | symbol_in->section->output_section->vma + | |
874 | symbol_in->section->output_offset); | |
875 | ||
876 | switch (r_type) | |
877 | { | |
878 | case R_SH_DIR32: | |
879 | insn = bfd_get_32 (abfd, hit_data); | |
880 | insn += sym_value + reloc_entry->addend; | |
881 | bfd_put_32 (abfd, insn, hit_data); | |
882 | break; | |
883 | case R_SH_IND12W: | |
884 | insn = bfd_get_16 (abfd, hit_data); | |
885 | sym_value += reloc_entry->addend; | |
886 | sym_value -= (input_section->output_section->vma | |
887 | + input_section->output_offset | |
888 | + addr | |
889 | + 4); | |
890 | sym_value += (insn & 0xfff) << 1; | |
891 | if (insn & 0x800) | |
892 | sym_value -= 0x1000; | |
893 | insn = (insn & 0xf000) | (sym_value & 0xfff); | |
894 | bfd_put_16 (abfd, insn, hit_data); | |
895 | if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000) | |
896 | return bfd_reloc_overflow; | |
897 | break; | |
898 | default: | |
899 | abort (); | |
900 | break; | |
901 | } | |
902 | ||
903 | return bfd_reloc_ok; | |
904 | } | |
905 | ||
906 | /* This function is used for relocs which are only used for relaxing, | |
907 | which the linker should otherwise ignore. */ | |
908 | ||
909 | static bfd_reloc_status_type | |
910 | sh_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section, | |
911 | output_bfd, error_message) | |
5f771d47 | 912 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 913 | arelent *reloc_entry; |
5f771d47 ILT |
914 | asymbol *symbol ATTRIBUTE_UNUSED; |
915 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
916 | asection *input_section; |
917 | bfd *output_bfd; | |
5f771d47 | 918 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
919 | { |
920 | if (output_bfd != NULL) | |
921 | reloc_entry->address += input_section->output_offset; | |
922 | return bfd_reloc_ok; | |
923 | } | |
924 | ||
925 | /* This structure is used to map BFD reloc codes to SH ELF relocs. */ | |
926 | ||
38b1a46c NC |
927 | struct elf_reloc_map |
928 | { | |
252b5132 RH |
929 | bfd_reloc_code_real_type bfd_reloc_val; |
930 | unsigned char elf_reloc_val; | |
931 | }; | |
932 | ||
933 | /* An array mapping BFD reloc codes to SH ELF relocs. */ | |
934 | ||
38b1a46c NC |
935 | static const struct elf_reloc_map sh_reloc_map[] = |
936 | { | |
252b5132 RH |
937 | { BFD_RELOC_NONE, R_SH_NONE }, |
938 | { BFD_RELOC_32, R_SH_DIR32 }, | |
939 | { BFD_RELOC_CTOR, R_SH_DIR32 }, | |
940 | { BFD_RELOC_32_PCREL, R_SH_REL32 }, | |
941 | { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN }, | |
942 | { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W }, | |
943 | { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ }, | |
944 | { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL }, | |
945 | { BFD_RELOC_8_PCREL, R_SH_SWITCH8 }, | |
946 | { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 }, | |
947 | { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 }, | |
948 | { BFD_RELOC_SH_USES, R_SH_USES }, | |
949 | { BFD_RELOC_SH_COUNT, R_SH_COUNT }, | |
950 | { BFD_RELOC_SH_ALIGN, R_SH_ALIGN }, | |
951 | { BFD_RELOC_SH_CODE, R_SH_CODE }, | |
952 | { BFD_RELOC_SH_DATA, R_SH_DATA }, | |
953 | { BFD_RELOC_SH_LABEL, R_SH_LABEL }, | |
954 | { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT }, | |
955 | { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY }, | |
015551fc JR |
956 | { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START }, |
957 | { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END }, | |
37c644f2 AO |
958 | { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 }, |
959 | { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 }, | |
960 | { BFD_RELOC_SH_COPY, R_SH_COPY }, | |
961 | { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT }, | |
962 | { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT }, | |
963 | { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE }, | |
964 | { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF }, | |
965 | { BFD_RELOC_SH_GOTPC, R_SH_GOTPC }, | |
252b5132 RH |
966 | }; |
967 | ||
968 | /* Given a BFD reloc code, return the howto structure for the | |
969 | corresponding SH ELf reloc. */ | |
970 | ||
971 | static reloc_howto_type * | |
972 | sh_elf_reloc_type_lookup (abfd, code) | |
5f771d47 | 973 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
974 | bfd_reloc_code_real_type code; |
975 | { | |
976 | unsigned int i; | |
977 | ||
978 | for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
979 | { | |
980 | if (sh_reloc_map[i].bfd_reloc_val == code) | |
981 | return &sh_elf_howto_table[(int) sh_reloc_map[i].elf_reloc_val]; | |
982 | } | |
983 | ||
984 | return NULL; | |
985 | } | |
986 | ||
987 | /* Given an ELF reloc, fill in the howto field of a relent. */ | |
988 | ||
989 | static void | |
990 | sh_elf_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 991 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
992 | arelent *cache_ptr; |
993 | Elf_Internal_Rela *dst; | |
994 | { | |
995 | unsigned int r; | |
996 | ||
997 | r = ELF32_R_TYPE (dst->r_info); | |
998 | ||
999 | BFD_ASSERT (r < (unsigned int) R_SH_max); | |
1000 | BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC); | |
06bb75c1 | 1001 | BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2); |
252b5132 RH |
1002 | |
1003 | cache_ptr->howto = &sh_elf_howto_table[r]; | |
1004 | } | |
1005 | \f | |
1006 | /* This function handles relaxing for SH ELF. See the corresponding | |
1007 | function in coff-sh.c for a description of what this does. FIXME: | |
1008 | There is a lot of duplication here between this code and the COFF | |
1009 | specific code. The format of relocs and symbols is wound deeply | |
1010 | into this code, but it would still be better if the duplication | |
1011 | could be eliminated somehow. Note in particular that although both | |
1012 | functions use symbols like R_SH_CODE, those symbols have different | |
1013 | values; in coff-sh.c they come from include/coff/sh.h, whereas here | |
1014 | they come from enum elf_sh_reloc_type in include/elf/sh.h. */ | |
1015 | ||
435b1e90 | 1016 | static boolean |
252b5132 RH |
1017 | sh_elf_relax_section (abfd, sec, link_info, again) |
1018 | bfd *abfd; | |
1019 | asection *sec; | |
1020 | struct bfd_link_info *link_info; | |
1021 | boolean *again; | |
1022 | { | |
1023 | Elf_Internal_Shdr *symtab_hdr; | |
1024 | Elf_Internal_Rela *internal_relocs; | |
1025 | Elf_Internal_Rela *free_relocs = NULL; | |
1026 | boolean have_code; | |
1027 | Elf_Internal_Rela *irel, *irelend; | |
1028 | bfd_byte *contents = NULL; | |
1029 | bfd_byte *free_contents = NULL; | |
1030 | Elf32_External_Sym *extsyms = NULL; | |
1031 | Elf32_External_Sym *free_extsyms = NULL; | |
1032 | ||
1033 | *again = false; | |
1034 | ||
1035 | if (link_info->relocateable | |
1036 | || (sec->flags & SEC_RELOC) == 0 | |
1037 | || sec->reloc_count == 0) | |
1038 | return true; | |
1039 | ||
1040 | /* If this is the first time we have been called for this section, | |
1041 | initialize the cooked size. */ | |
1042 | if (sec->_cooked_size == 0) | |
1043 | sec->_cooked_size = sec->_raw_size; | |
1044 | ||
1045 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1046 | ||
1047 | internal_relocs = (_bfd_elf32_link_read_relocs | |
1048 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1049 | link_info->keep_memory)); | |
1050 | if (internal_relocs == NULL) | |
1051 | goto error_return; | |
1052 | if (! link_info->keep_memory) | |
1053 | free_relocs = internal_relocs; | |
1054 | ||
1055 | have_code = false; | |
1056 | ||
1057 | irelend = internal_relocs + sec->reloc_count; | |
1058 | for (irel = internal_relocs; irel < irelend; irel++) | |
1059 | { | |
1060 | bfd_vma laddr, paddr, symval; | |
1061 | unsigned short insn; | |
1062 | Elf_Internal_Rela *irelfn, *irelscan, *irelcount; | |
1063 | bfd_signed_vma foff; | |
1064 | ||
1065 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE) | |
1066 | have_code = true; | |
1067 | ||
1068 | if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES) | |
1069 | continue; | |
1070 | ||
1071 | /* Get the section contents. */ | |
1072 | if (contents == NULL) | |
1073 | { | |
1074 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1075 | contents = elf_section_data (sec)->this_hdr.contents; | |
1076 | else | |
1077 | { | |
1078 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
1079 | if (contents == NULL) | |
1080 | goto error_return; | |
1081 | free_contents = contents; | |
1082 | ||
1083 | if (! bfd_get_section_contents (abfd, sec, contents, | |
1084 | (file_ptr) 0, sec->_raw_size)) | |
1085 | goto error_return; | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | /* The r_addend field of the R_SH_USES reloc will point us to | |
1090 | the register load. The 4 is because the r_addend field is | |
1091 | computed as though it were a jump offset, which are based | |
1092 | from 4 bytes after the jump instruction. */ | |
1093 | laddr = irel->r_offset + 4 + irel->r_addend; | |
1094 | if (laddr >= sec->_raw_size) | |
1095 | { | |
1096 | (*_bfd_error_handler) (_("%s: 0x%lx: warning: bad R_SH_USES offset"), | |
1097 | bfd_get_filename (abfd), | |
1098 | (unsigned long) irel->r_offset); | |
1099 | continue; | |
1100 | } | |
1101 | insn = bfd_get_16 (abfd, contents + laddr); | |
1102 | ||
1103 | /* If the instruction is not mov.l NN,rN, we don't know what to | |
1104 | do. */ | |
1105 | if ((insn & 0xf000) != 0xd000) | |
1106 | { | |
1107 | ((*_bfd_error_handler) | |
1108 | (_("%s: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x"), | |
1109 | bfd_get_filename (abfd), (unsigned long) irel->r_offset, insn)); | |
1110 | continue; | |
1111 | } | |
1112 | ||
1113 | /* Get the address from which the register is being loaded. The | |
1114 | displacement in the mov.l instruction is quadrupled. It is a | |
1115 | displacement from four bytes after the movl instruction, but, | |
1116 | before adding in the PC address, two least significant bits | |
1117 | of the PC are cleared. We assume that the section is aligned | |
1118 | on a four byte boundary. */ | |
1119 | paddr = insn & 0xff; | |
1120 | paddr *= 4; | |
435b1e90 | 1121 | paddr += (laddr + 4) & ~3; |
252b5132 RH |
1122 | if (paddr >= sec->_raw_size) |
1123 | { | |
1124 | ((*_bfd_error_handler) | |
1125 | (_("%s: 0x%lx: warning: bad R_SH_USES load offset"), | |
1126 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
1127 | continue; | |
1128 | } | |
1129 | ||
1130 | /* Get the reloc for the address from which the register is | |
1131 | being loaded. This reloc will tell us which function is | |
1132 | actually being called. */ | |
1133 | for (irelfn = internal_relocs; irelfn < irelend; irelfn++) | |
1134 | if (irelfn->r_offset == paddr | |
1135 | && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32) | |
1136 | break; | |
1137 | if (irelfn >= irelend) | |
1138 | { | |
1139 | ((*_bfd_error_handler) | |
1140 | (_("%s: 0x%lx: warning: could not find expected reloc"), | |
1141 | bfd_get_filename (abfd), (unsigned long) paddr)); | |
1142 | continue; | |
1143 | } | |
1144 | ||
1145 | /* Read this BFD's symbols if we haven't done so already. */ | |
1146 | if (extsyms == NULL) | |
1147 | { | |
1148 | if (symtab_hdr->contents != NULL) | |
1149 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1150 | else | |
1151 | { | |
1152 | extsyms = ((Elf32_External_Sym *) | |
1153 | bfd_malloc (symtab_hdr->sh_size)); | |
1154 | if (extsyms == NULL) | |
1155 | goto error_return; | |
1156 | free_extsyms = extsyms; | |
1157 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1158 | || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) | |
1159 | != symtab_hdr->sh_size)) | |
1160 | goto error_return; | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | /* Get the value of the symbol referred to by the reloc. */ | |
1165 | if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) | |
1166 | { | |
1167 | Elf_Internal_Sym isym; | |
1168 | ||
1169 | /* A local symbol. */ | |
1170 | bfd_elf32_swap_symbol_in (abfd, | |
1171 | extsyms + ELF32_R_SYM (irelfn->r_info), | |
1172 | &isym); | |
1173 | ||
1174 | if (isym.st_shndx != _bfd_elf_section_from_bfd_section (abfd, sec)) | |
1175 | { | |
1176 | ((*_bfd_error_handler) | |
1177 | (_("%s: 0x%lx: warning: symbol in unexpected section"), | |
1178 | bfd_get_filename (abfd), (unsigned long) paddr)); | |
1179 | continue; | |
1180 | } | |
1181 | ||
1182 | symval = (isym.st_value | |
1183 | + sec->output_section->vma | |
1184 | + sec->output_offset); | |
1185 | } | |
1186 | else | |
1187 | { | |
1188 | unsigned long indx; | |
1189 | struct elf_link_hash_entry *h; | |
1190 | ||
1191 | indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info; | |
1192 | h = elf_sym_hashes (abfd)[indx]; | |
1193 | BFD_ASSERT (h != NULL); | |
1194 | if (h->root.type != bfd_link_hash_defined | |
1195 | && h->root.type != bfd_link_hash_defweak) | |
1196 | { | |
1197 | /* This appears to be a reference to an undefined | |
1198 | symbol. Just ignore it--it will be caught by the | |
1199 | regular reloc processing. */ | |
1200 | continue; | |
1201 | } | |
1202 | ||
1203 | symval = (h->root.u.def.value | |
1204 | + h->root.u.def.section->output_section->vma | |
1205 | + h->root.u.def.section->output_offset); | |
1206 | } | |
1207 | ||
1208 | symval += bfd_get_32 (abfd, contents + paddr); | |
1209 | ||
1210 | /* See if this function call can be shortened. */ | |
1211 | foff = (symval | |
1212 | - (irel->r_offset | |
1213 | + sec->output_section->vma | |
1214 | + sec->output_offset | |
1215 | + 4)); | |
1216 | if (foff < -0x1000 || foff >= 0x1000) | |
1217 | { | |
1218 | /* After all that work, we can't shorten this function call. */ | |
1219 | continue; | |
1220 | } | |
1221 | ||
1222 | /* Shorten the function call. */ | |
1223 | ||
1224 | /* For simplicity of coding, we are going to modify the section | |
1225 | contents, the section relocs, and the BFD symbol table. We | |
1226 | must tell the rest of the code not to free up this | |
1227 | information. It would be possible to instead create a table | |
1228 | of changes which have to be made, as is done in coff-mips.c; | |
1229 | that would be more work, but would require less memory when | |
1230 | the linker is run. */ | |
1231 | ||
1232 | elf_section_data (sec)->relocs = internal_relocs; | |
1233 | free_relocs = NULL; | |
1234 | ||
1235 | elf_section_data (sec)->this_hdr.contents = contents; | |
1236 | free_contents = NULL; | |
1237 | ||
1238 | symtab_hdr->contents = (bfd_byte *) extsyms; | |
1239 | free_extsyms = NULL; | |
1240 | ||
1241 | /* Replace the jsr with a bsr. */ | |
1242 | ||
1243 | /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and | |
1244 | replace the jsr with a bsr. */ | |
1245 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W); | |
1246 | if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) | |
1247 | { | |
1248 | /* If this needs to be changed because of future relaxing, | |
1249 | it will be handled here like other internal IND12W | |
1250 | relocs. */ | |
1251 | bfd_put_16 (abfd, | |
1252 | 0xb000 | ((foff >> 1) & 0xfff), | |
1253 | contents + irel->r_offset); | |
1254 | } | |
1255 | else | |
1256 | { | |
1257 | /* We can't fully resolve this yet, because the external | |
1258 | symbol value may be changed by future relaxing. We let | |
1259 | the final link phase handle it. */ | |
1260 | bfd_put_16 (abfd, 0xb000, contents + irel->r_offset); | |
1261 | } | |
1262 | ||
1263 | /* See if there is another R_SH_USES reloc referring to the same | |
1264 | register load. */ | |
1265 | for (irelscan = internal_relocs; irelscan < irelend; irelscan++) | |
1266 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES | |
1267 | && laddr == irelscan->r_offset + 4 + irelscan->r_addend) | |
1268 | break; | |
1269 | if (irelscan < irelend) | |
1270 | { | |
1271 | /* Some other function call depends upon this register load, | |
1272 | and we have not yet converted that function call. | |
1273 | Indeed, we may never be able to convert it. There is | |
1274 | nothing else we can do at this point. */ | |
1275 | continue; | |
1276 | } | |
1277 | ||
1278 | /* Look for a R_SH_COUNT reloc on the location where the | |
1279 | function address is stored. Do this before deleting any | |
1280 | bytes, to avoid confusion about the address. */ | |
1281 | for (irelcount = internal_relocs; irelcount < irelend; irelcount++) | |
1282 | if (irelcount->r_offset == paddr | |
1283 | && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT) | |
1284 | break; | |
1285 | ||
1286 | /* Delete the register load. */ | |
1287 | if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2)) | |
1288 | goto error_return; | |
1289 | ||
1290 | /* That will change things, so, just in case it permits some | |
1291 | other function call to come within range, we should relax | |
1292 | again. Note that this is not required, and it may be slow. */ | |
1293 | *again = true; | |
1294 | ||
1295 | /* Now check whether we got a COUNT reloc. */ | |
1296 | if (irelcount >= irelend) | |
1297 | { | |
1298 | ((*_bfd_error_handler) | |
1299 | (_("%s: 0x%lx: warning: could not find expected COUNT reloc"), | |
1300 | bfd_get_filename (abfd), (unsigned long) paddr)); | |
1301 | continue; | |
1302 | } | |
1303 | ||
1304 | /* The number of uses is stored in the r_addend field. We've | |
1305 | just deleted one. */ | |
1306 | if (irelcount->r_addend == 0) | |
1307 | { | |
1308 | ((*_bfd_error_handler) (_("%s: 0x%lx: warning: bad count"), | |
1309 | bfd_get_filename (abfd), | |
1310 | (unsigned long) paddr)); | |
1311 | continue; | |
1312 | } | |
1313 | ||
1314 | --irelcount->r_addend; | |
1315 | ||
1316 | /* If there are no more uses, we can delete the address. Reload | |
1317 | the address from irelfn, in case it was changed by the | |
1318 | previous call to sh_elf_relax_delete_bytes. */ | |
1319 | if (irelcount->r_addend == 0) | |
1320 | { | |
1321 | if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4)) | |
1322 | goto error_return; | |
1323 | } | |
1324 | ||
1325 | /* We've done all we can with that function call. */ | |
1326 | } | |
1327 | ||
1328 | /* Look for load and store instructions that we can align on four | |
1329 | byte boundaries. */ | |
1330 | if (have_code) | |
1331 | { | |
1332 | boolean swapped; | |
1333 | ||
1334 | /* Get the section contents. */ | |
1335 | if (contents == NULL) | |
1336 | { | |
1337 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1338 | contents = elf_section_data (sec)->this_hdr.contents; | |
1339 | else | |
1340 | { | |
1341 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
1342 | if (contents == NULL) | |
1343 | goto error_return; | |
1344 | free_contents = contents; | |
1345 | ||
1346 | if (! bfd_get_section_contents (abfd, sec, contents, | |
1347 | (file_ptr) 0, sec->_raw_size)) | |
1348 | goto error_return; | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents, | |
1353 | &swapped)) | |
1354 | goto error_return; | |
1355 | ||
1356 | if (swapped) | |
1357 | { | |
1358 | elf_section_data (sec)->relocs = internal_relocs; | |
1359 | free_relocs = NULL; | |
1360 | ||
1361 | elf_section_data (sec)->this_hdr.contents = contents; | |
1362 | free_contents = NULL; | |
1363 | ||
1364 | symtab_hdr->contents = (bfd_byte *) extsyms; | |
1365 | free_extsyms = NULL; | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | if (free_relocs != NULL) | |
1370 | { | |
1371 | free (free_relocs); | |
1372 | free_relocs = NULL; | |
1373 | } | |
1374 | ||
1375 | if (free_contents != NULL) | |
1376 | { | |
1377 | if (! link_info->keep_memory) | |
1378 | free (free_contents); | |
1379 | else | |
1380 | { | |
1381 | /* Cache the section contents for elf_link_input_bfd. */ | |
1382 | elf_section_data (sec)->this_hdr.contents = contents; | |
1383 | } | |
1384 | free_contents = NULL; | |
1385 | } | |
1386 | ||
1387 | if (free_extsyms != NULL) | |
1388 | { | |
1389 | if (! link_info->keep_memory) | |
1390 | free (free_extsyms); | |
1391 | else | |
1392 | { | |
1393 | /* Cache the symbols for elf_link_input_bfd. */ | |
1394 | symtab_hdr->contents = extsyms; | |
1395 | } | |
1396 | free_extsyms = NULL; | |
1397 | } | |
1398 | ||
1399 | return true; | |
1400 | ||
1401 | error_return: | |
1402 | if (free_relocs != NULL) | |
1403 | free (free_relocs); | |
1404 | if (free_contents != NULL) | |
1405 | free (free_contents); | |
1406 | if (free_extsyms != NULL) | |
1407 | free (free_extsyms); | |
1408 | return false; | |
1409 | } | |
1410 | ||
1411 | /* Delete some bytes from a section while relaxing. FIXME: There is a | |
1412 | lot of duplication between this function and sh_relax_delete_bytes | |
1413 | in coff-sh.c. */ | |
1414 | ||
1415 | static boolean | |
1416 | sh_elf_relax_delete_bytes (abfd, sec, addr, count) | |
1417 | bfd *abfd; | |
1418 | asection *sec; | |
1419 | bfd_vma addr; | |
1420 | int count; | |
1421 | { | |
1422 | Elf_Internal_Shdr *symtab_hdr; | |
1423 | Elf32_External_Sym *extsyms; | |
1424 | int shndx, index; | |
1425 | bfd_byte *contents; | |
1426 | Elf_Internal_Rela *irel, *irelend; | |
1427 | Elf_Internal_Rela *irelalign; | |
1428 | bfd_vma toaddr; | |
1429 | Elf32_External_Sym *esym, *esymend; | |
1430 | struct elf_link_hash_entry *sym_hash; | |
1431 | asection *o; | |
1432 | ||
1433 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1434 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1435 | ||
1436 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1437 | ||
1438 | contents = elf_section_data (sec)->this_hdr.contents; | |
1439 | ||
1440 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
1441 | power larger than the number of bytes we are deleting. */ | |
1442 | ||
1443 | irelalign = NULL; | |
1444 | toaddr = sec->_cooked_size; | |
1445 | ||
1446 | irel = elf_section_data (sec)->relocs; | |
1447 | irelend = irel + sec->reloc_count; | |
1448 | for (; irel < irelend; irel++) | |
1449 | { | |
1450 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN | |
1451 | && irel->r_offset > addr | |
1452 | && count < (1 << irel->r_addend)) | |
1453 | { | |
1454 | irelalign = irel; | |
1455 | toaddr = irel->r_offset; | |
1456 | break; | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | /* Actually delete the bytes. */ | |
1461 | memmove (contents + addr, contents + addr + count, toaddr - addr - count); | |
1462 | if (irelalign == NULL) | |
1463 | sec->_cooked_size -= count; | |
1464 | else | |
1465 | { | |
1466 | int i; | |
1467 | ||
1468 | #define NOP_OPCODE (0x0009) | |
1469 | ||
1470 | BFD_ASSERT ((count & 1) == 0); | |
1471 | for (i = 0; i < count; i += 2) | |
1472 | bfd_put_16 (abfd, NOP_OPCODE, contents + toaddr - count + i); | |
1473 | } | |
1474 | ||
1475 | /* Adjust all the relocs. */ | |
1476 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1477 | { | |
1478 | bfd_vma nraddr, stop; | |
1479 | bfd_vma start = 0; | |
1480 | int insn = 0; | |
1481 | Elf_Internal_Sym sym; | |
1482 | int off, adjust, oinsn; | |
1483 | bfd_signed_vma voff = 0; | |
1484 | boolean overflow; | |
1485 | ||
1486 | /* Get the new reloc address. */ | |
1487 | nraddr = irel->r_offset; | |
1488 | if ((irel->r_offset > addr | |
1489 | && irel->r_offset < toaddr) | |
1490 | || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN | |
1491 | && irel->r_offset == toaddr)) | |
1492 | nraddr -= count; | |
1493 | ||
1494 | /* See if this reloc was for the bytes we have deleted, in which | |
1495 | case we no longer care about it. Don't delete relocs which | |
1496 | represent addresses, though. */ | |
1497 | if (irel->r_offset >= addr | |
1498 | && irel->r_offset < addr + count | |
1499 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN | |
1500 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE | |
1501 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA | |
1502 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL) | |
1503 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1504 | (int) R_SH_NONE); | |
1505 | ||
1506 | /* If this is a PC relative reloc, see if the range it covers | |
1507 | includes the bytes we have deleted. */ | |
1508 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) | |
1509 | { | |
1510 | default: | |
1511 | break; | |
1512 | ||
1513 | case R_SH_DIR8WPN: | |
1514 | case R_SH_IND12W: | |
1515 | case R_SH_DIR8WPZ: | |
1516 | case R_SH_DIR8WPL: | |
1517 | start = irel->r_offset; | |
1518 | insn = bfd_get_16 (abfd, contents + nraddr); | |
1519 | break; | |
1520 | } | |
1521 | ||
1522 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) | |
1523 | { | |
1524 | default: | |
1525 | start = stop = addr; | |
1526 | break; | |
1527 | ||
1528 | case R_SH_DIR32: | |
1529 | /* If this reloc is against a symbol defined in this | |
1530 | section, and the symbol will not be adjusted below, we | |
1531 | must check the addend to see it will put the value in | |
1532 | range to be adjusted, and hence must be changed. */ | |
1533 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1534 | { | |
1535 | bfd_elf32_swap_symbol_in (abfd, | |
1536 | extsyms + ELF32_R_SYM (irel->r_info), | |
1537 | &sym); | |
1538 | if (sym.st_shndx == shndx | |
1539 | && (sym.st_value <= addr | |
1540 | || sym.st_value >= toaddr)) | |
1541 | { | |
1542 | bfd_vma val; | |
1543 | ||
1544 | val = bfd_get_32 (abfd, contents + nraddr); | |
1545 | val += sym.st_value; | |
1546 | if (val > addr && val < toaddr) | |
1547 | bfd_put_32 (abfd, val - count, contents + nraddr); | |
1548 | } | |
1549 | } | |
1550 | start = stop = addr; | |
1551 | break; | |
1552 | ||
1553 | case R_SH_DIR8WPN: | |
1554 | off = insn & 0xff; | |
1555 | if (off & 0x80) | |
1556 | off -= 0x100; | |
1557 | stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); | |
1558 | break; | |
1559 | ||
1560 | case R_SH_IND12W: | |
1561 | if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info) | |
1562 | start = stop = addr; | |
1563 | else | |
1564 | { | |
1565 | off = insn & 0xfff; | |
1566 | if (off & 0x800) | |
1567 | off -= 0x1000; | |
1568 | stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); | |
1569 | } | |
1570 | break; | |
1571 | ||
1572 | case R_SH_DIR8WPZ: | |
1573 | off = insn & 0xff; | |
1574 | stop = start + 4 + off * 2; | |
1575 | break; | |
1576 | ||
1577 | case R_SH_DIR8WPL: | |
1578 | off = insn & 0xff; | |
435b1e90 | 1579 | stop = (start & ~(bfd_vma) 3) + 4 + off * 4; |
252b5132 RH |
1580 | break; |
1581 | ||
1582 | case R_SH_SWITCH8: | |
1583 | case R_SH_SWITCH16: | |
1584 | case R_SH_SWITCH32: | |
1585 | /* These relocs types represent | |
1586 | .word L2-L1 | |
06e1ba78 | 1587 | The r_addend field holds the difference between the reloc |
252b5132 RH |
1588 | address and L1. That is the start of the reloc, and |
1589 | adding in the contents gives us the top. We must adjust | |
06e1ba78 JR |
1590 | both the r_offset field and the section contents. |
1591 | N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset, | |
1592 | and the elf bfd r_offset is called r_vaddr. */ | |
252b5132 | 1593 | |
06e1ba78 JR |
1594 | stop = irel->r_offset; |
1595 | start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend); | |
252b5132 RH |
1596 | |
1597 | if (start > addr | |
1598 | && start < toaddr | |
1599 | && (stop <= addr || stop >= toaddr)) | |
1600 | irel->r_addend += count; | |
1601 | else if (stop > addr | |
1602 | && stop < toaddr | |
1603 | && (start <= addr || start >= toaddr)) | |
1604 | irel->r_addend -= count; | |
1605 | ||
252b5132 RH |
1606 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16) |
1607 | voff = bfd_get_signed_16 (abfd, contents + nraddr); | |
1608 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8) | |
1609 | voff = bfd_get_8 (abfd, contents + nraddr); | |
1610 | else | |
1611 | voff = bfd_get_signed_32 (abfd, contents + nraddr); | |
1612 | stop = (bfd_vma) ((bfd_signed_vma) start + voff); | |
1613 | ||
1614 | break; | |
1615 | ||
1616 | case R_SH_USES: | |
1617 | start = irel->r_offset; | |
1618 | stop = (bfd_vma) ((bfd_signed_vma) start | |
1619 | + (long) irel->r_addend | |
1620 | + 4); | |
1621 | break; | |
1622 | } | |
1623 | ||
1624 | if (start > addr | |
1625 | && start < toaddr | |
1626 | && (stop <= addr || stop >= toaddr)) | |
1627 | adjust = count; | |
1628 | else if (stop > addr | |
1629 | && stop < toaddr | |
1630 | && (start <= addr || start >= toaddr)) | |
1631 | adjust = - count; | |
1632 | else | |
1633 | adjust = 0; | |
1634 | ||
1635 | if (adjust != 0) | |
1636 | { | |
1637 | oinsn = insn; | |
1638 | overflow = false; | |
1639 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) | |
1640 | { | |
1641 | default: | |
1642 | abort (); | |
1643 | break; | |
1644 | ||
1645 | case R_SH_DIR8WPN: | |
1646 | case R_SH_DIR8WPZ: | |
1647 | insn += adjust / 2; | |
1648 | if ((oinsn & 0xff00) != (insn & 0xff00)) | |
1649 | overflow = true; | |
1650 | bfd_put_16 (abfd, insn, contents + nraddr); | |
1651 | break; | |
1652 | ||
1653 | case R_SH_IND12W: | |
1654 | insn += adjust / 2; | |
1655 | if ((oinsn & 0xf000) != (insn & 0xf000)) | |
1656 | overflow = true; | |
1657 | bfd_put_16 (abfd, insn, contents + nraddr); | |
1658 | break; | |
1659 | ||
1660 | case R_SH_DIR8WPL: | |
1661 | BFD_ASSERT (adjust == count || count >= 4); | |
1662 | if (count >= 4) | |
1663 | insn += adjust / 4; | |
1664 | else | |
1665 | { | |
1666 | if ((irel->r_offset & 3) == 0) | |
1667 | ++insn; | |
1668 | } | |
1669 | if ((oinsn & 0xff00) != (insn & 0xff00)) | |
1670 | overflow = true; | |
1671 | bfd_put_16 (abfd, insn, contents + nraddr); | |
1672 | break; | |
1673 | ||
851cde10 JR |
1674 | case R_SH_SWITCH8: |
1675 | voff += adjust; | |
1676 | if (voff < 0 || voff >= 0xff) | |
1677 | overflow = true; | |
1678 | bfd_put_8 (abfd, voff, contents + nraddr); | |
1679 | break; | |
1680 | ||
252b5132 RH |
1681 | case R_SH_SWITCH16: |
1682 | voff += adjust; | |
1683 | if (voff < - 0x8000 || voff >= 0x8000) | |
1684 | overflow = true; | |
1685 | bfd_put_signed_16 (abfd, voff, contents + nraddr); | |
1686 | break; | |
1687 | ||
1688 | case R_SH_SWITCH32: | |
1689 | voff += adjust; | |
1690 | bfd_put_signed_32 (abfd, voff, contents + nraddr); | |
1691 | break; | |
1692 | ||
1693 | case R_SH_USES: | |
1694 | irel->r_addend += adjust; | |
1695 | break; | |
1696 | } | |
1697 | ||
1698 | if (overflow) | |
1699 | { | |
1700 | ((*_bfd_error_handler) | |
1701 | (_("%s: 0x%lx: fatal: reloc overflow while relaxing"), | |
1702 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
1703 | bfd_set_error (bfd_error_bad_value); | |
1704 | return false; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | irel->r_offset = nraddr; | |
1709 | } | |
1710 | ||
1711 | /* Look through all the other sections. If there contain any IMM32 | |
1712 | relocs against internal symbols which we are not going to adjust | |
1713 | below, we may need to adjust the addends. */ | |
1714 | for (o = abfd->sections; o != NULL; o = o->next) | |
1715 | { | |
1716 | Elf_Internal_Rela *internal_relocs; | |
1717 | Elf_Internal_Rela *irelscan, *irelscanend; | |
1718 | bfd_byte *ocontents; | |
1719 | ||
1720 | if (o == sec | |
1721 | || (o->flags & SEC_RELOC) == 0 | |
1722 | || o->reloc_count == 0) | |
1723 | continue; | |
1724 | ||
1725 | /* We always cache the relocs. Perhaps, if info->keep_memory is | |
1726 | false, we should free them, if we are permitted to, when we | |
1727 | leave sh_coff_relax_section. */ | |
1728 | internal_relocs = (_bfd_elf32_link_read_relocs | |
1729 | (abfd, o, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1730 | true)); | |
1731 | if (internal_relocs == NULL) | |
1732 | return false; | |
1733 | ||
1734 | ocontents = NULL; | |
1735 | irelscanend = internal_relocs + o->reloc_count; | |
1736 | for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++) | |
1737 | { | |
1738 | Elf_Internal_Sym sym; | |
1739 | ||
084aa3aa JR |
1740 | /* Dwarf line numbers use R_SH_SWITCH32 relocs. */ |
1741 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32) | |
1742 | { | |
1743 | bfd_vma start, stop; | |
1744 | bfd_signed_vma voff; | |
1745 | ||
1746 | if (ocontents == NULL) | |
1747 | { | |
1748 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
1749 | ocontents = elf_section_data (o)->this_hdr.contents; | |
1750 | else | |
1751 | { | |
1752 | /* We always cache the section contents. | |
1753 | Perhaps, if info->keep_memory is false, we | |
1754 | should free them, if we are permitted to, | |
1755 | when we leave sh_coff_relax_section. */ | |
1756 | ocontents = (bfd_byte *) bfd_malloc (o->_raw_size); | |
1757 | if (ocontents == NULL) | |
1758 | return false; | |
1759 | if (! bfd_get_section_contents (abfd, o, ocontents, | |
1760 | (file_ptr) 0, | |
1761 | o->_raw_size)) | |
1762 | return false; | |
1763 | elf_section_data (o)->this_hdr.contents = ocontents; | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | stop = irelscan->r_offset; | |
1768 | start | |
1769 | = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend); | |
1770 | ||
1771 | /* STOP is in a different section, so it won't change. */ | |
1772 | if (start > addr && start < toaddr) | |
1773 | irelscan->r_addend += count; | |
1774 | ||
1775 | voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset); | |
1776 | stop = (bfd_vma) ((bfd_signed_vma) start + voff); | |
1777 | ||
1778 | if (start > addr | |
1779 | && start < toaddr | |
1780 | && (stop <= addr || stop >= toaddr)) | |
1781 | bfd_put_signed_32 (abfd, voff + count, | |
1782 | ocontents + irelscan->r_offset); | |
1783 | else if (stop > addr | |
1784 | && stop < toaddr | |
1785 | && (start <= addr || start >= toaddr)) | |
1786 | bfd_put_signed_32 (abfd, voff - count, | |
1787 | ocontents + irelscan->r_offset); | |
1788 | } | |
1789 | ||
252b5132 RH |
1790 | if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32) |
1791 | continue; | |
1792 | ||
1793 | if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info) | |
1794 | continue; | |
1795 | ||
1796 | bfd_elf32_swap_symbol_in (abfd, | |
1797 | extsyms + ELF32_R_SYM (irelscan->r_info), | |
1798 | &sym); | |
1799 | ||
1800 | if (sym.st_shndx == shndx | |
1801 | && (sym.st_value <= addr | |
1802 | || sym.st_value >= toaddr)) | |
1803 | { | |
1804 | bfd_vma val; | |
1805 | ||
1806 | if (ocontents == NULL) | |
1807 | { | |
1808 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
1809 | ocontents = elf_section_data (o)->this_hdr.contents; | |
1810 | else | |
1811 | { | |
1812 | /* We always cache the section contents. | |
1813 | Perhaps, if info->keep_memory is false, we | |
1814 | should free them, if we are permitted to, | |
1815 | when we leave sh_coff_relax_section. */ | |
1816 | ocontents = (bfd_byte *) bfd_malloc (o->_raw_size); | |
1817 | if (ocontents == NULL) | |
1818 | return false; | |
1819 | if (! bfd_get_section_contents (abfd, o, ocontents, | |
1820 | (file_ptr) 0, | |
1821 | o->_raw_size)) | |
1822 | return false; | |
1823 | elf_section_data (o)->this_hdr.contents = ocontents; | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | val = bfd_get_32 (abfd, ocontents + irelscan->r_offset); | |
1828 | val += sym.st_value; | |
1829 | if (val > addr && val < toaddr) | |
1830 | bfd_put_32 (abfd, val - count, | |
1831 | ocontents + irelscan->r_offset); | |
1832 | } | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | /* Adjust the local symbols defined in this section. */ | |
1837 | esym = extsyms; | |
1838 | esymend = esym + symtab_hdr->sh_info; | |
1839 | for (; esym < esymend; esym++) | |
1840 | { | |
1841 | Elf_Internal_Sym isym; | |
1842 | ||
1843 | bfd_elf32_swap_symbol_in (abfd, esym, &isym); | |
1844 | ||
1845 | if (isym.st_shndx == shndx | |
1846 | && isym.st_value > addr | |
1847 | && isym.st_value < toaddr) | |
1848 | { | |
1849 | isym.st_value -= count; | |
1850 | bfd_elf32_swap_symbol_out (abfd, &isym, esym); | |
1851 | } | |
1852 | } | |
1853 | ||
1854 | /* Now adjust the global symbols defined in this section. */ | |
1855 | esym = extsyms + symtab_hdr->sh_info; | |
1856 | esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); | |
1857 | for (index = 0; esym < esymend; esym++, index++) | |
1858 | { | |
1859 | Elf_Internal_Sym isym; | |
1860 | ||
1861 | bfd_elf32_swap_symbol_in (abfd, esym, &isym); | |
1862 | sym_hash = elf_sym_hashes (abfd)[index]; | |
1863 | if (isym.st_shndx == shndx | |
1864 | && ((sym_hash)->root.type == bfd_link_hash_defined | |
1865 | || (sym_hash)->root.type == bfd_link_hash_defweak) | |
1866 | && (sym_hash)->root.u.def.section == sec | |
1867 | && (sym_hash)->root.u.def.value > addr | |
1868 | && (sym_hash)->root.u.def.value < toaddr) | |
1869 | { | |
1870 | (sym_hash)->root.u.def.value -= count; | |
1871 | } | |
1872 | } | |
1873 | ||
1874 | /* See if we can move the ALIGN reloc forward. We have adjusted | |
1875 | r_offset for it already. */ | |
1876 | if (irelalign != NULL) | |
1877 | { | |
1878 | bfd_vma alignto, alignaddr; | |
1879 | ||
1880 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); | |
1881 | alignaddr = BFD_ALIGN (irelalign->r_offset, | |
1882 | 1 << irelalign->r_addend); | |
1883 | if (alignto != alignaddr) | |
1884 | { | |
1885 | /* Tail recursion. */ | |
1886 | return sh_elf_relax_delete_bytes (abfd, sec, alignaddr, | |
1887 | alignto - alignaddr); | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | return true; | |
1892 | } | |
1893 | ||
1894 | /* Look for loads and stores which we can align to four byte | |
1895 | boundaries. This is like sh_align_loads in coff-sh.c. */ | |
1896 | ||
1897 | static boolean | |
1898 | sh_elf_align_loads (abfd, sec, internal_relocs, contents, pswapped) | |
1899 | bfd *abfd; | |
1900 | asection *sec; | |
1901 | Elf_Internal_Rela *internal_relocs; | |
1902 | bfd_byte *contents; | |
1903 | boolean *pswapped; | |
1904 | { | |
1905 | Elf_Internal_Rela *irel, *irelend; | |
1906 | bfd_vma *labels = NULL; | |
1907 | bfd_vma *label, *label_end; | |
1908 | ||
1909 | *pswapped = false; | |
1910 | ||
1911 | irelend = internal_relocs + sec->reloc_count; | |
1912 | ||
1913 | /* Get all the addresses with labels on them. */ | |
1914 | labels = (bfd_vma *) bfd_malloc (sec->reloc_count * sizeof (bfd_vma)); | |
1915 | if (labels == NULL) | |
1916 | goto error_return; | |
1917 | label_end = labels; | |
1918 | for (irel = internal_relocs; irel < irelend; irel++) | |
1919 | { | |
1920 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL) | |
1921 | { | |
1922 | *label_end = irel->r_offset; | |
1923 | ++label_end; | |
1924 | } | |
1925 | } | |
1926 | ||
1927 | /* Note that the assembler currently always outputs relocs in | |
1928 | address order. If that ever changes, this code will need to sort | |
1929 | the label values and the relocs. */ | |
1930 | ||
1931 | label = labels; | |
1932 | ||
1933 | for (irel = internal_relocs; irel < irelend; irel++) | |
1934 | { | |
1935 | bfd_vma start, stop; | |
1936 | ||
1937 | if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE) | |
1938 | continue; | |
1939 | ||
1940 | start = irel->r_offset; | |
1941 | ||
1942 | for (irel++; irel < irelend; irel++) | |
1943 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA) | |
1944 | break; | |
1945 | if (irel < irelend) | |
1946 | stop = irel->r_offset; | |
1947 | else | |
1948 | stop = sec->_cooked_size; | |
1949 | ||
1950 | if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns, | |
1951 | (PTR) internal_relocs, &label, | |
1952 | label_end, start, stop, pswapped)) | |
1953 | goto error_return; | |
1954 | } | |
1955 | ||
1956 | free (labels); | |
1957 | ||
1958 | return true; | |
1959 | ||
1960 | error_return: | |
1961 | if (labels != NULL) | |
1962 | free (labels); | |
1963 | return false; | |
1964 | } | |
1965 | ||
1966 | /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */ | |
1967 | ||
1968 | static boolean | |
1969 | sh_elf_swap_insns (abfd, sec, relocs, contents, addr) | |
1970 | bfd *abfd; | |
1971 | asection *sec; | |
1972 | PTR relocs; | |
1973 | bfd_byte *contents; | |
1974 | bfd_vma addr; | |
1975 | { | |
1976 | Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs; | |
1977 | unsigned short i1, i2; | |
1978 | Elf_Internal_Rela *irel, *irelend; | |
1979 | ||
1980 | /* Swap the instructions themselves. */ | |
1981 | i1 = bfd_get_16 (abfd, contents + addr); | |
1982 | i2 = bfd_get_16 (abfd, contents + addr + 2); | |
1983 | bfd_put_16 (abfd, i2, contents + addr); | |
1984 | bfd_put_16 (abfd, i1, contents + addr + 2); | |
1985 | ||
1986 | /* Adjust all reloc addresses. */ | |
1987 | irelend = internal_relocs + sec->reloc_count; | |
1988 | for (irel = internal_relocs; irel < irelend; irel++) | |
1989 | { | |
1990 | enum elf_sh_reloc_type type; | |
1991 | int add; | |
1992 | ||
1993 | /* There are a few special types of relocs that we don't want to | |
1994 | adjust. These relocs do not apply to the instruction itself, | |
1995 | but are only associated with the address. */ | |
1996 | type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info); | |
1997 | if (type == R_SH_ALIGN | |
1998 | || type == R_SH_CODE | |
1999 | || type == R_SH_DATA | |
2000 | || type == R_SH_LABEL) | |
2001 | continue; | |
2002 | ||
2003 | /* If an R_SH_USES reloc points to one of the addresses being | |
2004 | swapped, we must adjust it. It would be incorrect to do this | |
2005 | for a jump, though, since we want to execute both | |
2006 | instructions after the jump. (We have avoided swapping | |
2007 | around a label, so the jump will not wind up executing an | |
2008 | instruction it shouldn't). */ | |
2009 | if (type == R_SH_USES) | |
2010 | { | |
2011 | bfd_vma off; | |
2012 | ||
2013 | off = irel->r_offset + 4 + irel->r_addend; | |
2014 | if (off == addr) | |
2015 | irel->r_offset += 2; | |
2016 | else if (off == addr + 2) | |
2017 | irel->r_offset -= 2; | |
2018 | } | |
2019 | ||
2020 | if (irel->r_offset == addr) | |
2021 | { | |
2022 | irel->r_offset += 2; | |
2023 | add = -2; | |
2024 | } | |
2025 | else if (irel->r_offset == addr + 2) | |
2026 | { | |
2027 | irel->r_offset -= 2; | |
2028 | add = 2; | |
2029 | } | |
2030 | else | |
2031 | add = 0; | |
2032 | ||
2033 | if (add != 0) | |
2034 | { | |
2035 | bfd_byte *loc; | |
2036 | unsigned short insn, oinsn; | |
2037 | boolean overflow; | |
2038 | ||
2039 | loc = contents + irel->r_offset; | |
2040 | overflow = false; | |
2041 | switch (type) | |
2042 | { | |
2043 | default: | |
2044 | break; | |
2045 | ||
2046 | case R_SH_DIR8WPN: | |
2047 | case R_SH_DIR8WPZ: | |
2048 | insn = bfd_get_16 (abfd, loc); | |
2049 | oinsn = insn; | |
2050 | insn += add / 2; | |
2051 | if ((oinsn & 0xff00) != (insn & 0xff00)) | |
2052 | overflow = true; | |
2053 | bfd_put_16 (abfd, insn, loc); | |
2054 | break; | |
2055 | ||
2056 | case R_SH_IND12W: | |
2057 | insn = bfd_get_16 (abfd, loc); | |
2058 | oinsn = insn; | |
2059 | insn += add / 2; | |
2060 | if ((oinsn & 0xf000) != (insn & 0xf000)) | |
2061 | overflow = true; | |
2062 | bfd_put_16 (abfd, insn, loc); | |
2063 | break; | |
2064 | ||
2065 | case R_SH_DIR8WPL: | |
2066 | /* This reloc ignores the least significant 3 bits of | |
2067 | the program counter before adding in the offset. | |
2068 | This means that if ADDR is at an even address, the | |
2069 | swap will not affect the offset. If ADDR is an at an | |
2070 | odd address, then the instruction will be crossing a | |
2071 | four byte boundary, and must be adjusted. */ | |
2072 | if ((addr & 3) != 0) | |
2073 | { | |
2074 | insn = bfd_get_16 (abfd, loc); | |
2075 | oinsn = insn; | |
2076 | insn += add / 2; | |
2077 | if ((oinsn & 0xff00) != (insn & 0xff00)) | |
2078 | overflow = true; | |
2079 | bfd_put_16 (abfd, insn, loc); | |
2080 | } | |
2081 | ||
2082 | break; | |
2083 | } | |
2084 | ||
2085 | if (overflow) | |
2086 | { | |
2087 | ((*_bfd_error_handler) | |
2088 | (_("%s: 0x%lx: fatal: reloc overflow while relaxing"), | |
2089 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
2090 | bfd_set_error (bfd_error_bad_value); | |
2091 | return false; | |
2092 | } | |
2093 | } | |
2094 | } | |
2095 | ||
2096 | return true; | |
2097 | } | |
2098 | \f | |
37c644f2 | 2099 | /* The size in bytes of an entry in the procedure linkage table. */ |
252b5132 | 2100 | |
37c644f2 AO |
2101 | #define PLT_ENTRY_SIZE 28 |
2102 | ||
2103 | /* First entry in an absolute procedure linkage table look like this. */ | |
2104 | ||
6c426cf3 NC |
2105 | #if 1 |
2106 | /* Note - this code has been "optimised" not to use r2. r2 is used by | |
2107 | GCC to return the address of large strutcures, so it should not be | |
2108 | corrupted here. This does mean however, that this PLT does not conform | |
2109 | to the SH PIC ABI. That spec says that r0 contains the type of the PLT | |
2110 | and r2 contains the GOT id. This version stores the GOT id in r0 and | |
2111 | ignores the type. Loaders can easily detect this difference however, | |
2112 | since the type will always be 0 or 8, and the GOT ids will always be | |
2113 | greater than or equal to 12. */ | |
2114 | static const bfd_byte elf_sh_plt0_entry_be[PLT_ENTRY_SIZE] = | |
2115 | { | |
2116 | 0xd0, 0x05, /* mov.l 2f,r0 */ | |
2117 | 0x60, 0x02, /* mov.l @r0,r0 */ | |
2118 | 0x2f, 0x06, /* mov.l r0,@-r15 */ | |
2119 | 0xd0, 0x03, /* mov.l 1f,r0 */ | |
2120 | 0x60, 0x02, /* mov.l @r0,r0 */ | |
2121 | 0x40, 0x2b, /* jmp @r0 */ | |
2122 | 0x60, 0xf6, /* mov.l @r15+,r0 */ | |
2123 | 0x00, 0x09, /* nop */ | |
2124 | 0x00, 0x09, /* nop */ | |
2125 | 0x00, 0x09, /* nop */ | |
2126 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ | |
2127 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ | |
2128 | }; | |
2129 | ||
2130 | static const bfd_byte elf_sh_plt0_entry_le[PLT_ENTRY_SIZE] = | |
2131 | { | |
2132 | 0x05, 0xd0, /* mov.l 2f,r0 */ | |
2133 | 0x02, 0x60, /* mov.l @r0,r0 */ | |
2134 | 0x06, 0x2f, /* mov.l r0,@-r15 */ | |
2135 | 0x03, 0xd0, /* mov.l 1f,r0 */ | |
2136 | 0x02, 0x60, /* mov.l @r0,r0 */ | |
2137 | 0x2b, 0x40, /* jmp @r0 */ | |
2138 | 0xf6, 0x60, /* mov.l @r15+,r0 */ | |
2139 | 0x09, 0x00, /* nop */ | |
2140 | 0x09, 0x00, /* nop */ | |
2141 | 0x09, 0x00, /* nop */ | |
2142 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ | |
2143 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ | |
2144 | }; | |
2145 | ||
2146 | /* Sebsequent entries in an absolute procedure linkage table look like | |
2147 | this. */ | |
2148 | ||
2149 | static const bfd_byte elf_sh_plt_entry_be[PLT_ENTRY_SIZE] = | |
2150 | { | |
2151 | 0xd0, 0x04, /* mov.l 1f,r0 */ | |
2152 | 0x60, 0x02, /* mov.l @r0,r0 */ | |
2153 | 0xd1, 0x02, /* mov.l 0f,r1 */ | |
2154 | 0x40, 0x2b, /* jmp @r0 */ | |
2155 | 0x60, 0x13, /* mov r1,r0 */ | |
2156 | 0xd1, 0x03, /* mov.l 2f,r1 */ | |
2157 | 0x40, 0x2b, /* jmp @r0 */ | |
2158 | 0x00, 0x09, /* nop */ | |
2159 | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ | |
2160 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2161 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ | |
2162 | }; | |
2163 | ||
2164 | static const bfd_byte elf_sh_plt_entry_le[PLT_ENTRY_SIZE] = | |
2165 | { | |
2166 | 0x04, 0xd0, /* mov.l 1f,r0 */ | |
2167 | 0x02, 0x60, /* mov.l @r0,r0 */ | |
2168 | 0x02, 0xd1, /* mov.l 0f,r1 */ | |
2169 | 0x2b, 0x40, /* jmp @r0 */ | |
2170 | 0x13, 0x60, /* mov r1,r0 */ | |
2171 | 0x03, 0xd1, /* mov.l 2f,r1 */ | |
2172 | 0x2b, 0x40, /* jmp @r0 */ | |
2173 | 0x09, 0x00, /* nop */ | |
2174 | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ | |
2175 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2176 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ | |
2177 | }; | |
2178 | ||
2179 | /* Entries in a PIC procedure linkage table look like this. */ | |
2180 | ||
2181 | static const bfd_byte elf_sh_pic_plt_entry_be[PLT_ENTRY_SIZE] = | |
2182 | { | |
2183 | 0xd0, 0x04, /* mov.l 1f,r0 */ | |
2184 | 0x00, 0xce, /* mov.l @(r0,r12),r0 */ | |
2185 | 0x40, 0x2b, /* jmp @r0 */ | |
2186 | 0x00, 0x09, /* nop */ | |
2187 | 0x50, 0xc2, /* mov.l @(8,r12),r0 */ | |
2188 | 0xd1, 0x03, /* mov.l 2f,r1 */ | |
2189 | 0x40, 0x2b, /* jmp @r0 */ | |
2190 | 0x50, 0xc1, /* mov.l @(4,r12),r0 */ | |
2191 | 0x00, 0x09, /* nop */ | |
2192 | 0x00, 0x09, /* nop */ | |
2193 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2194 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ | |
2195 | }; | |
2196 | ||
2197 | static const bfd_byte elf_sh_pic_plt_entry_le[PLT_ENTRY_SIZE] = | |
2198 | { | |
2199 | 0x04, 0xd0, /* mov.l 1f,r0 */ | |
2200 | 0xce, 0x00, /* mov.l @(r0,r12),r0 */ | |
2201 | 0x2b, 0x40, /* jmp @r0 */ | |
2202 | 0x09, 0x00, /* nop */ | |
2203 | 0xc2, 0x50, /* mov.l @(8,r12),r0 */ | |
2204 | 0x03, 0xd1, /* mov.l 2f,r1 */ | |
2205 | 0x2b, 0x40, /* jmp @r0 */ | |
2206 | 0xc1, 0x50, /* mov.l @(4,r12),r0 */ | |
2207 | 0x09, 0x00, /* nop */ | |
2208 | 0x09, 0x00, /* nop */ | |
2209 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2210 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ | |
2211 | }; | |
2212 | ||
2213 | #else /* These are the old style PLT entries. */ | |
38b1a46c NC |
2214 | static const bfd_byte elf_sh_plt0_entry_be[PLT_ENTRY_SIZE] = |
2215 | { | |
37c644f2 AO |
2216 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
2217 | 0xd2, 0x05, /* mov.l 2f,r2 */ | |
2218 | 0x60, 0x02, /* mov.l @r0,r0 */ | |
2219 | 0x62, 0x22, /* mov.l @r2,r2 */ | |
2220 | 0x40, 0x2b, /* jmp @r0 */ | |
2221 | 0xe0, 0x00, /* mov #0,r0 */ | |
2222 | 0x00, 0x09, /* nop */ | |
2223 | 0x00, 0x09, /* nop */ | |
2224 | 0x00, 0x09, /* nop */ | |
2225 | 0x00, 0x09, /* nop */ | |
2226 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ | |
2227 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ | |
2228 | }; | |
252b5132 | 2229 | |
38b1a46c NC |
2230 | static const bfd_byte elf_sh_plt0_entry_le[PLT_ENTRY_SIZE] = |
2231 | { | |
37c644f2 AO |
2232 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
2233 | 0x05, 0xd2, /* mov.l 2f,r2 */ | |
2234 | 0x02, 0x60, /* mov.l @r0,r0 */ | |
2235 | 0x22, 0x62, /* mov.l @r2,r2 */ | |
2236 | 0x2b, 0x40, /* jmp @r0 */ | |
2237 | 0x00, 0xe0, /* mov #0,r0 */ | |
2238 | 0x09, 0x00, /* nop */ | |
2239 | 0x09, 0x00, /* nop */ | |
2240 | 0x09, 0x00, /* nop */ | |
2241 | 0x09, 0x00, /* nop */ | |
2242 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ | |
2243 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ | |
2244 | }; | |
252b5132 | 2245 | |
37c644f2 AO |
2246 | /* Sebsequent entries in an absolute procedure linkage table look like |
2247 | this. */ | |
252b5132 | 2248 | |
38b1a46c NC |
2249 | static const bfd_byte elf_sh_plt_entry_be[PLT_ENTRY_SIZE] = |
2250 | { | |
37c644f2 AO |
2251 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
2252 | 0x60, 0x02, /* mov.l @r0,r0 */ | |
2253 | 0xd2, 0x02, /* mov.l 0f,r2 */ | |
2254 | 0x40, 0x2b, /* jmp @r0 */ | |
2255 | 0x60, 0x23, /* mov r2,r0 */ | |
2256 | 0xd1, 0x03, /* mov.l 2f,r1 */ | |
2257 | 0x40, 0x2b, /* jmp @r0 */ | |
2258 | 0x00, 0x09, /* nop */ | |
2259 | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ | |
2260 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2261 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ | |
2262 | }; | |
252b5132 | 2263 | |
38b1a46c NC |
2264 | static const bfd_byte elf_sh_plt_entry_le[PLT_ENTRY_SIZE] = |
2265 | { | |
37c644f2 AO |
2266 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
2267 | 0x02, 0x60, /* mov.l @r0,r0 */ | |
2268 | 0x02, 0xd2, /* mov.l 0f,r2 */ | |
2269 | 0x2b, 0x40, /* jmp @r0 */ | |
2270 | 0x23, 0x60, /* mov r2,r0 */ | |
2271 | 0x03, 0xd1, /* mov.l 2f,r1 */ | |
2272 | 0x2b, 0x40, /* jmp @r0 */ | |
2273 | 0x09, 0x00, /* nop */ | |
2274 | 0, 0, 0, 0, /* 0: replaced with address of .PLT. */ | |
2275 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2276 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ | |
2277 | }; | |
252b5132 | 2278 | |
37c644f2 | 2279 | /* Entries in a PIC procedure linkage table look like this. */ |
252b5132 | 2280 | |
38b1a46c NC |
2281 | static const bfd_byte elf_sh_pic_plt_entry_be[PLT_ENTRY_SIZE] = |
2282 | { | |
37c644f2 AO |
2283 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
2284 | 0x00, 0xce, /* mov.l @(r0,r12),r0 */ | |
2285 | 0x40, 0x2b, /* jmp @r0 */ | |
2286 | 0x00, 0x09, /* nop */ | |
2287 | 0x50, 0xc2, /* 0: mov.l @(8,r12),r0 */ | |
2288 | 0x52, 0xc1, /* 1: mov.l @(4,r12),r2 */ | |
2289 | 0xd1, 0x02, /* mov.l 2f,r1 */ | |
2290 | 0x40, 0x2b, /* jmp @r0 */ | |
2291 | 0xe0, 0x00, /* mov #0,r0 ! shows the type of PLT. */ | |
2292 | 0x00, 0x09, /* nop */ | |
2293 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2294 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ | |
2295 | }; | |
252b5132 | 2296 | |
38b1a46c NC |
2297 | static const bfd_byte elf_sh_pic_plt_entry_le[PLT_ENTRY_SIZE] = |
2298 | { | |
37c644f2 AO |
2299 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
2300 | 0xce, 0x00, /* mov.l @(r0,r12),r0 */ | |
2301 | 0x2b, 0x40, /* jmp @r0 */ | |
2302 | 0x09, 0x00, /* nop */ | |
2303 | 0xc2, 0x50, /* 0: mov.l @(8,r12),r0 */ | |
2304 | 0xc1, 0x52, /* 1: mov.l @(4,r12),r2 */ | |
2305 | 0x02, 0xd1, /* mov.l 2f,r1 */ | |
2306 | 0x2b, 0x40, /* jmp @r0 */ | |
2307 | 0x00, 0xe0, /* mov #0,r0 ! shows the type of PLT. */ | |
2308 | 0x09, 0x00, /* nop */ | |
2309 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ | |
2310 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ | |
2311 | }; | |
6c426cf3 | 2312 | #endif /* old style PLT entries. */ |
252b5132 | 2313 | |
37c644f2 AO |
2314 | static const bfd_byte *elf_sh_plt0_entry; |
2315 | static const bfd_byte *elf_sh_plt_entry; | |
2316 | static const bfd_byte *elf_sh_pic_plt_entry; | |
252b5132 | 2317 | |
37c644f2 AO |
2318 | /* Return size of a PLT entry. */ |
2319 | #define elf_sh_sizeof_plt(info) PLT_ENTRY_SIZE | |
252b5132 | 2320 | |
37c644f2 AO |
2321 | /* Return offset of the PLT0 address in an absolute PLT entry. */ |
2322 | #define elf_sh_plt_plt0_offset(info) 16 | |
252b5132 | 2323 | |
37c644f2 AO |
2324 | /* Return offset of the linker in PLT0 entry. */ |
2325 | #define elf_sh_plt0_linker_offset(info) 20 | |
9bdafcce | 2326 | |
37c644f2 AO |
2327 | /* Return offset of the GOT id in PLT0 entry. */ |
2328 | #define elf_sh_plt0_gotid_offset(info) 24 | |
9bdafcce | 2329 | |
37c644f2 AO |
2330 | /* Return offset of the tempoline in PLT entry */ |
2331 | #define elf_sh_plt_temp_offset(info) 8 | |
9bdafcce | 2332 | |
37c644f2 AO |
2333 | /* Return offset of the symbol in PLT entry. */ |
2334 | #define elf_sh_plt_symbol_offset(info) 20 | |
9bdafcce | 2335 | |
37c644f2 AO |
2336 | /* Return offset of the relocation in PLT entry. */ |
2337 | #define elf_sh_plt_reloc_offset(info) 24 | |
015551fc | 2338 | |
37c644f2 AO |
2339 | /* The sh linker needs to keep track of the number of relocs that it |
2340 | decides to copy in check_relocs for each symbol. This is so that | |
2341 | it can discard PC relative relocs if it doesn't need them when | |
2342 | linking with -Bsymbolic. We store the information in a field | |
2343 | extending the regular ELF linker hash table. */ | |
9bdafcce | 2344 | |
37c644f2 AO |
2345 | /* This structure keeps track of the number of PC relative relocs we |
2346 | have copied for a given symbol. */ | |
252b5132 | 2347 | |
38b1a46c NC |
2348 | struct elf_sh_pcrel_relocs_copied |
2349 | { | |
37c644f2 AO |
2350 | /* Next section. */ |
2351 | struct elf_sh_pcrel_relocs_copied *next; | |
2352 | /* A section in dynobj. */ | |
2353 | asection *section; | |
2354 | /* Number of relocs copied in this section. */ | |
2355 | bfd_size_type count; | |
2356 | }; | |
252b5132 | 2357 | |
37c644f2 AO |
2358 | /* sh ELF linker hash entry. */ |
2359 | ||
38b1a46c NC |
2360 | struct elf_sh_link_hash_entry |
2361 | { | |
37c644f2 AO |
2362 | struct elf_link_hash_entry root; |
2363 | ||
2364 | /* Number of PC relative relocs copied for this symbol. */ | |
2365 | struct elf_sh_pcrel_relocs_copied *pcrel_relocs_copied; | |
2366 | }; | |
2367 | ||
2368 | /* sh ELF linker hash table. */ | |
2369 | ||
38b1a46c NC |
2370 | struct elf_sh_link_hash_table |
2371 | { | |
37c644f2 AO |
2372 | struct elf_link_hash_table root; |
2373 | }; | |
2374 | ||
2375 | /* Declare this now that the above structures are defined. */ | |
2376 | ||
2377 | static boolean sh_elf_discard_copies | |
2378 | PARAMS ((struct elf_sh_link_hash_entry *, PTR)); | |
2379 | ||
2380 | /* Traverse an sh ELF linker hash table. */ | |
2381 | ||
2382 | #define sh_elf_link_hash_traverse(table, func, info) \ | |
2383 | (elf_link_hash_traverse \ | |
2384 | (&(table)->root, \ | |
2385 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
2386 | (info))) | |
2387 | ||
2388 | /* Get the sh ELF linker hash table from a link_info structure. */ | |
2389 | ||
2390 | #define sh_elf_hash_table(p) \ | |
2391 | ((struct elf_sh_link_hash_table *) ((p)->hash)) | |
2392 | ||
2393 | /* Create an entry in an sh ELF linker hash table. */ | |
2394 | ||
2395 | static struct bfd_hash_entry * | |
2396 | sh_elf_link_hash_newfunc (entry, table, string) | |
2397 | struct bfd_hash_entry *entry; | |
2398 | struct bfd_hash_table *table; | |
2399 | const char *string; | |
2400 | { | |
2401 | struct elf_sh_link_hash_entry *ret = | |
2402 | (struct elf_sh_link_hash_entry *) entry; | |
2403 | ||
2404 | /* Allocate the structure if it has not already been allocated by a | |
2405 | subclass. */ | |
2406 | if (ret == (struct elf_sh_link_hash_entry *) NULL) | |
2407 | ret = ((struct elf_sh_link_hash_entry *) | |
2408 | bfd_hash_allocate (table, | |
2409 | sizeof (struct elf_sh_link_hash_entry))); | |
2410 | if (ret == (struct elf_sh_link_hash_entry *) NULL) | |
2411 | return (struct bfd_hash_entry *) ret; | |
2412 | ||
2413 | /* Call the allocation method of the superclass. */ | |
2414 | ret = ((struct elf_sh_link_hash_entry *) | |
2415 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2416 | table, string)); | |
2417 | if (ret != (struct elf_sh_link_hash_entry *) NULL) | |
2418 | { | |
2419 | ret->pcrel_relocs_copied = NULL; | |
2420 | } | |
2421 | ||
2422 | return (struct bfd_hash_entry *) ret; | |
2423 | } | |
2424 | ||
2425 | /* Create an sh ELF linker hash table. */ | |
2426 | ||
2427 | static struct bfd_link_hash_table * | |
2428 | sh_elf_link_hash_table_create (abfd) | |
2429 | bfd *abfd; | |
2430 | { | |
2431 | struct elf_sh_link_hash_table *ret; | |
2432 | ||
2433 | ret = ((struct elf_sh_link_hash_table *) | |
2434 | bfd_alloc (abfd, sizeof (struct elf_sh_link_hash_table))); | |
2435 | if (ret == (struct elf_sh_link_hash_table *) NULL) | |
2436 | return NULL; | |
2437 | ||
2438 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
2439 | sh_elf_link_hash_newfunc)) | |
2440 | { | |
2441 | bfd_release (abfd, ret); | |
2442 | return NULL; | |
2443 | } | |
2444 | ||
2445 | return &ret->root.root; | |
2446 | } | |
2447 | ||
2448 | /* Create dynamic sections when linking against a dynamic object. */ | |
2449 | ||
2450 | static boolean | |
2451 | sh_elf_create_dynamic_sections (abfd, info) | |
2452 | bfd *abfd; | |
2453 | struct bfd_link_info *info; | |
2454 | { | |
2455 | flagword flags, pltflags; | |
2456 | register asection *s; | |
2457 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2458 | int ptralign = 0; | |
2459 | ||
2460 | switch (bed->s->arch_size) | |
2461 | { | |
2462 | case 32: | |
2463 | ptralign = 2; | |
2464 | break; | |
2465 | ||
2466 | case 64: | |
2467 | ptralign = 3; | |
2468 | break; | |
2469 | ||
2470 | default: | |
2471 | bfd_set_error (bfd_error_bad_value); | |
2472 | return false; | |
2473 | } | |
2474 | ||
2475 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
2476 | .rel[a].bss sections. */ | |
2477 | ||
2478 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2479 | | SEC_LINKER_CREATED); | |
2480 | ||
2481 | pltflags = flags; | |
2482 | pltflags |= SEC_CODE; | |
2483 | if (bed->plt_not_loaded) | |
2484 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
2485 | if (bed->plt_readonly) | |
2486 | pltflags |= SEC_READONLY; | |
2487 | ||
2488 | s = bfd_make_section (abfd, ".plt"); | |
2489 | if (s == NULL | |
2490 | || ! bfd_set_section_flags (abfd, s, pltflags) | |
2491 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
2492 | return false; | |
2493 | ||
2494 | if (bed->want_plt_sym) | |
2495 | { | |
2496 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
2497 | .plt section. */ | |
2498 | struct elf_link_hash_entry *h = NULL; | |
2499 | if (! (_bfd_generic_link_add_one_symbol | |
2500 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
2501 | (bfd_vma) 0, (const char *) NULL, false, | |
2502 | get_elf_backend_data (abfd)->collect, | |
2503 | (struct bfd_link_hash_entry **) &h))) | |
2504 | return false; | |
2505 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
2506 | h->type = STT_OBJECT; | |
2507 | ||
2508 | if (info->shared | |
2509 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
2510 | return false; | |
2511 | } | |
2512 | ||
435b1e90 | 2513 | s = bfd_make_section (abfd, |
37c644f2 AO |
2514 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); |
2515 | if (s == NULL | |
2516 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
2517 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2518 | return false; | |
2519 | ||
2520 | if (! _bfd_elf_create_got_section (abfd, info)) | |
2521 | return false; | |
2522 | ||
2523 | { | |
2524 | const char *secname; | |
2525 | char *relname; | |
2526 | flagword secflags; | |
2527 | asection *sec; | |
2528 | ||
2529 | for (sec = abfd->sections; sec; sec = sec->next) | |
2530 | { | |
2531 | secflags = bfd_get_section_flags (abfd, sec); | |
2532 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
2533 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
2534 | continue; | |
2535 | secname = bfd_get_section_name (abfd, sec); | |
2536 | relname = (char *) bfd_malloc (strlen (secname) + 6); | |
2537 | strcpy (relname, ".rela"); | |
2538 | strcat (relname, secname); | |
2539 | s = bfd_make_section (abfd, relname); | |
2540 | if (s == NULL | |
2541 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
2542 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2543 | return false; | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | if (bed->want_dynbss) | |
2548 | { | |
2549 | /* The .dynbss section is a place to put symbols which are defined | |
2550 | by dynamic objects, are referenced by regular objects, and are | |
2551 | not functions. We must allocate space for them in the process | |
2552 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
2553 | initialize them at run time. The linker script puts the .dynbss | |
2554 | section into the .bss section of the final image. */ | |
2555 | s = bfd_make_section (abfd, ".dynbss"); | |
2556 | if (s == NULL | |
2557 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
2558 | return false; | |
2559 | ||
2560 | /* The .rel[a].bss section holds copy relocs. This section is not | |
2561 | normally needed. We need to create it here, though, so that the | |
2562 | linker will map it to an output section. We can't just create it | |
2563 | only if we need it, because we will not know whether we need it | |
2564 | until we have seen all the input files, and the first time the | |
2565 | main linker code calls BFD after examining all the input files | |
2566 | (size_dynamic_sections) the input sections have already been | |
2567 | mapped to the output sections. If the section turns out not to | |
2568 | be needed, we can discard it later. We will never need this | |
2569 | section when generating a shared object, since they do not use | |
2570 | copy relocs. */ | |
2571 | if (! info->shared) | |
2572 | { | |
435b1e90 KH |
2573 | s = bfd_make_section (abfd, |
2574 | (bed->default_use_rela_p | |
2575 | ? ".rela.bss" : ".rel.bss")); | |
37c644f2 AO |
2576 | if (s == NULL |
2577 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
2578 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2579 | return false; | |
2580 | } | |
2581 | } | |
2582 | ||
2583 | return true; | |
2584 | } | |
2585 | \f | |
37c644f2 AO |
2586 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2587 | regular object. The current definition is in some section of the | |
2588 | dynamic object, but we're not including those sections. We have to | |
2589 | change the definition to something the rest of the link can | |
2590 | understand. */ | |
2591 | ||
2592 | static boolean | |
2593 | sh_elf_adjust_dynamic_symbol (info, h) | |
2594 | struct bfd_link_info *info; | |
2595 | struct elf_link_hash_entry *h; | |
2596 | { | |
2597 | bfd *dynobj; | |
2598 | asection *s; | |
2599 | unsigned int power_of_two; | |
2600 | ||
2601 | dynobj = elf_hash_table (info)->dynobj; | |
2602 | ||
2603 | /* Make sure we know what is going on here. */ | |
2604 | BFD_ASSERT (dynobj != NULL | |
2605 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
2606 | || h->weakdef != NULL | |
2607 | || ((h->elf_link_hash_flags | |
2608 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2609 | && (h->elf_link_hash_flags | |
2610 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
2611 | && (h->elf_link_hash_flags | |
2612 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
2613 | ||
2614 | /* If this is a function, put it in the procedure linkage table. We | |
2615 | will fill in the contents of the procedure linkage table later, | |
2616 | when we know the address of the .got section. */ | |
2617 | if (h->type == STT_FUNC | |
2618 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
2619 | { | |
2620 | if (! info->shared | |
2621 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
2622 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) | |
2623 | { | |
2624 | /* This case can occur if we saw a PLT reloc in an input | |
2625 | file, but the symbol was never referred to by a dynamic | |
2626 | object. In such a case, we don't actually need to build | |
2627 | a procedure linkage table, and we can just do a REL32 | |
2628 | reloc instead. */ | |
2629 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
2630 | return true; | |
2631 | } | |
2632 | ||
2633 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2634 | if (h->dynindx == -1) | |
2635 | { | |
2636 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
2637 | return false; | |
2638 | } | |
2639 | ||
2640 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
2641 | BFD_ASSERT (s != NULL); | |
2642 | ||
2643 | /* If this is the first .plt entry, make room for the special | |
2644 | first entry. */ | |
2645 | if (s->_raw_size == 0) | |
2646 | s->_raw_size += PLT_ENTRY_SIZE; | |
2647 | ||
2648 | /* If this symbol is not defined in a regular file, and we are | |
2649 | not generating a shared library, then set the symbol to this | |
2650 | location in the .plt. This is required to make function | |
2651 | pointers compare as equal between the normal executable and | |
2652 | the shared library. */ | |
2653 | if (! info->shared | |
2654 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2655 | { | |
2656 | h->root.u.def.section = s; | |
2657 | h->root.u.def.value = s->_raw_size; | |
2658 | } | |
2659 | ||
2660 | h->plt.offset = s->_raw_size; | |
2661 | ||
2662 | /* Make room for this entry. */ | |
2663 | s->_raw_size += elf_sh_sizeof_plt (info); | |
2664 | ||
2665 | /* We also need to make an entry in the .got.plt section, which | |
2666 | will be placed in the .got section by the linker script. */ | |
2667 | ||
2668 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2669 | BFD_ASSERT (s != NULL); | |
2670 | s->_raw_size += 4; | |
2671 | ||
2672 | /* We also need to make an entry in the .rela.plt section. */ | |
2673 | ||
2674 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2675 | BFD_ASSERT (s != NULL); | |
2676 | s->_raw_size += sizeof (Elf32_External_Rela); | |
2677 | ||
2678 | return true; | |
2679 | } | |
2680 | ||
2681 | /* If this is a weak symbol, and there is a real definition, the | |
2682 | processor independent code will have arranged for us to see the | |
2683 | real definition first, and we can just use the same value. */ | |
2684 | if (h->weakdef != NULL) | |
2685 | { | |
2686 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
2687 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
2688 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
2689 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
2690 | return true; | |
2691 | } | |
2692 | ||
2693 | /* This is a reference to a symbol defined by a dynamic object which | |
2694 | is not a function. */ | |
2695 | ||
2696 | /* If we are creating a shared library, we must presume that the | |
2697 | only references to the symbol are via the global offset table. | |
2698 | For such cases we need not do anything here; the relocations will | |
2699 | be handled correctly by relocate_section. */ | |
2700 | if (info->shared) | |
2701 | return true; | |
2702 | ||
2703 | /* If there are no references to this symbol that do not use the | |
2704 | GOT, we don't need to generate a copy reloc. */ | |
2705 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
2706 | return true; | |
2707 | ||
2708 | /* We must allocate the symbol in our .dynbss section, which will | |
2709 | become part of the .bss section of the executable. There will be | |
2710 | an entry for this symbol in the .dynsym section. The dynamic | |
2711 | object will contain position independent code, so all references | |
2712 | from the dynamic object to this symbol will go through the global | |
2713 | offset table. The dynamic linker will use the .dynsym entry to | |
2714 | determine the address it must put in the global offset table, so | |
2715 | both the dynamic object and the regular object will refer to the | |
2716 | same memory location for the variable. */ | |
2717 | ||
2718 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2719 | BFD_ASSERT (s != NULL); | |
2720 | ||
2721 | /* We must generate a R_SH_COPY reloc to tell the dynamic linker to | |
2722 | copy the initial value out of the dynamic object and into the | |
2723 | runtime process image. We need to remember the offset into the | |
2724 | .rela.bss section we are going to use. */ | |
2725 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2726 | { | |
2727 | asection *srel; | |
2728 | ||
2729 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2730 | BFD_ASSERT (srel != NULL); | |
2731 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
2732 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
2733 | } | |
2734 | ||
2735 | /* We need to figure out the alignment required for this symbol. I | |
2736 | have no idea how ELF linkers handle this. */ | |
2737 | power_of_two = bfd_log2 (h->size); | |
2738 | if (power_of_two > 3) | |
2739 | power_of_two = 3; | |
2740 | ||
2741 | /* Apply the required alignment. */ | |
2742 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
2743 | (bfd_size_type) (1 << power_of_two)); | |
2744 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
2745 | { | |
2746 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
2747 | return false; | |
2748 | } | |
2749 | ||
2750 | /* Define the symbol as being at this point in the section. */ | |
2751 | h->root.u.def.section = s; | |
2752 | h->root.u.def.value = s->_raw_size; | |
2753 | ||
2754 | /* Increment the section size to make room for the symbol. */ | |
2755 | s->_raw_size += h->size; | |
2756 | ||
2757 | return true; | |
2758 | } | |
2759 | ||
2760 | /* Set the sizes of the dynamic sections. */ | |
2761 | ||
2762 | static boolean | |
2763 | sh_elf_size_dynamic_sections (output_bfd, info) | |
2764 | bfd *output_bfd; | |
2765 | struct bfd_link_info *info; | |
2766 | { | |
2767 | bfd *dynobj; | |
2768 | asection *s; | |
2769 | boolean plt; | |
2770 | boolean relocs; | |
2771 | boolean reltext; | |
2772 | ||
2773 | dynobj = elf_hash_table (info)->dynobj; | |
2774 | BFD_ASSERT (dynobj != NULL); | |
2775 | ||
2776 | if (elf_hash_table (info)->dynamic_sections_created) | |
2777 | { | |
2778 | /* Set the contents of the .interp section to the interpreter. */ | |
2779 | if (! info->shared) | |
2780 | { | |
2781 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2782 | BFD_ASSERT (s != NULL); | |
2783 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2784 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2785 | } | |
2786 | } | |
2787 | else | |
2788 | { | |
2789 | /* We may have created entries in the .rela.got section. | |
2790 | However, if we are not creating the dynamic sections, we will | |
2791 | not actually use these entries. Reset the size of .rela.got, | |
2792 | which will cause it to get stripped from the output file | |
2793 | below. */ | |
2794 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2795 | if (s != NULL) | |
2796 | s->_raw_size = 0; | |
2797 | } | |
2798 | ||
2799 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
2800 | PC relative relocs against symbols defined in a regular object. | |
2801 | We allocated space for them in the check_relocs routine, but we | |
2802 | will not fill them in in the relocate_section routine. */ | |
2803 | if (info->shared && info->symbolic) | |
2804 | sh_elf_link_hash_traverse (sh_elf_hash_table (info), | |
2805 | sh_elf_discard_copies, | |
2806 | (PTR) NULL); | |
2807 | ||
2808 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2809 | determined the sizes of the various dynamic sections. Allocate | |
2810 | memory for them. */ | |
2811 | plt = false; | |
2812 | relocs = false; | |
2813 | reltext = false; | |
2814 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2815 | { | |
2816 | const char *name; | |
2817 | boolean strip; | |
2818 | ||
2819 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2820 | continue; | |
2821 | ||
2822 | /* It's OK to base decisions on the section name, because none | |
2823 | of the dynobj section names depend upon the input files. */ | |
2824 | name = bfd_get_section_name (dynobj, s); | |
2825 | ||
2826 | strip = false; | |
2827 | ||
2828 | if (strcmp (name, ".plt") == 0) | |
2829 | { | |
2830 | if (s->_raw_size == 0) | |
2831 | { | |
2832 | /* Strip this section if we don't need it; see the | |
2833 | comment below. */ | |
2834 | strip = true; | |
2835 | } | |
2836 | else | |
2837 | { | |
2838 | /* Remember whether there is a PLT. */ | |
2839 | plt = true; | |
2840 | } | |
2841 | } | |
2842 | else if (strncmp (name, ".rela", 5) == 0) | |
2843 | { | |
2844 | if (s->_raw_size == 0) | |
2845 | { | |
2846 | /* If we don't need this section, strip it from the | |
2847 | output file. This is mostly to handle .rela.bss and | |
2848 | .rela.plt. We must create both sections in | |
2849 | create_dynamic_sections, because they must be created | |
2850 | before the linker maps input sections to output | |
2851 | sections. The linker does that before | |
2852 | adjust_dynamic_symbol is called, and it is that | |
2853 | function which decides whether anything needs to go | |
2854 | into these sections. */ | |
2855 | strip = true; | |
2856 | } | |
2857 | else | |
2858 | { | |
2859 | asection *target; | |
2860 | ||
2861 | /* Remember whether there are any reloc sections other | |
2862 | than .rela.plt. */ | |
2863 | if (strcmp (name, ".rela.plt") != 0) | |
2864 | { | |
2865 | const char *outname; | |
2866 | ||
2867 | relocs = true; | |
2868 | ||
2869 | /* If this relocation section applies to a read only | |
2870 | section, then we probably need a DT_TEXTREL | |
2871 | entry. The entries in the .rela.plt section | |
2872 | really apply to the .got section, which we | |
2873 | created ourselves and so know is not readonly. */ | |
2874 | outname = bfd_get_section_name (output_bfd, | |
2875 | s->output_section); | |
2876 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
2877 | if (target != NULL | |
2878 | && (target->flags & SEC_READONLY) != 0 | |
2879 | && (target->flags & SEC_ALLOC) != 0) | |
2880 | reltext = true; | |
2881 | } | |
2882 | ||
2883 | /* We use the reloc_count field as a counter if we need | |
2884 | to copy relocs into the output file. */ | |
2885 | s->reloc_count = 0; | |
2886 | } | |
2887 | } | |
2888 | else if (strncmp (name, ".got", 4) != 0) | |
2889 | { | |
2890 | /* It's not one of our sections, so don't allocate space. */ | |
2891 | continue; | |
2892 | } | |
2893 | ||
2894 | if (strip) | |
2895 | { | |
2896 | _bfd_strip_section_from_output (info, s); | |
2897 | continue; | |
2898 | } | |
2899 | ||
2900 | /* Allocate memory for the section contents. */ | |
2901 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); | |
2902 | if (s->contents == NULL && s->_raw_size != 0) | |
2903 | return false; | |
2904 | } | |
2905 | ||
2906 | if (elf_hash_table (info)->dynamic_sections_created) | |
2907 | { | |
2908 | /* Add some entries to the .dynamic section. We fill in the | |
2909 | values later, in sh_elf_finish_dynamic_sections, but we | |
2910 | must add the entries now so that we get the correct size for | |
2911 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2912 | dynamic linker and used by the debugger. */ | |
2913 | if (! info->shared) | |
2914 | { | |
2915 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2916 | return false; | |
2917 | } | |
2918 | ||
2919 | if (plt) | |
2920 | { | |
2921 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) | |
2922 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2923 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2924 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2925 | return false; | |
2926 | } | |
2927 | ||
2928 | if (relocs) | |
2929 | { | |
2930 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
2931 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
2932 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
2933 | sizeof (Elf32_External_Rela))) | |
2934 | return false; | |
2935 | } | |
2936 | ||
2937 | if (reltext) | |
2938 | { | |
2939 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2940 | return false; | |
2941 | } | |
2942 | } | |
2943 | ||
2944 | return true; | |
2945 | } | |
2946 | ||
2947 | /* This function is called via sh_elf_link_hash_traverse if we are | |
2948 | creating a shared object with -Bsymbolic. It discards the space | |
2949 | allocated to copy PC relative relocs against symbols which are | |
2950 | defined in regular objects. We allocated space for them in the | |
2951 | check_relocs routine, but we won't fill them in in the | |
2952 | relocate_section routine. */ | |
2953 | ||
37c644f2 AO |
2954 | static boolean |
2955 | sh_elf_discard_copies (h, ignore) | |
2956 | struct elf_sh_link_hash_entry *h; | |
2957 | PTR ignore ATTRIBUTE_UNUSED; | |
2958 | { | |
2959 | struct elf_sh_pcrel_relocs_copied *s; | |
2960 | ||
2961 | /* We only discard relocs for symbols defined in a regular object. */ | |
2962 | if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2963 | return true; | |
2964 | ||
2965 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
2966 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); | |
2967 | ||
2968 | return true; | |
2969 | } | |
37c644f2 AO |
2970 | \f |
2971 | /* Relocate an SH ELF section. */ | |
2972 | ||
2973 | static boolean | |
2974 | sh_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
2975 | contents, relocs, local_syms, local_sections) | |
2976 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
2977 | struct bfd_link_info *info; | |
2978 | bfd *input_bfd; | |
2979 | asection *input_section; | |
2980 | bfd_byte *contents; | |
2981 | Elf_Internal_Rela *relocs; | |
2982 | Elf_Internal_Sym *local_syms; | |
2983 | asection **local_sections; | |
2984 | { | |
2985 | Elf_Internal_Shdr *symtab_hdr; | |
2986 | struct elf_link_hash_entry **sym_hashes; | |
2987 | Elf_Internal_Rela *rel, *relend; | |
2988 | bfd *dynobj; | |
2989 | bfd_vma *local_got_offsets; | |
2990 | asection *sgot; | |
2991 | asection *splt; | |
2992 | asection *sreloc; | |
2993 | ||
2994 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2995 | sym_hashes = elf_sym_hashes (input_bfd); | |
2996 | dynobj = elf_hash_table (info)->dynobj; | |
2997 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2998 | ||
2999 | sgot = NULL; | |
3000 | splt = NULL; | |
3001 | sreloc = NULL; | |
3002 | ||
3003 | rel = relocs; | |
3004 | relend = relocs + input_section->reloc_count; | |
3005 | for (; rel < relend; rel++) | |
3006 | { | |
3007 | int r_type; | |
3008 | reloc_howto_type *howto; | |
3009 | unsigned long r_symndx; | |
3010 | Elf_Internal_Sym *sym; | |
3011 | asection *sec; | |
3012 | struct elf_link_hash_entry *h; | |
3013 | bfd_vma relocation; | |
435b1e90 | 3014 | bfd_vma addend = (bfd_vma) 0; |
37c644f2 AO |
3015 | bfd_reloc_status_type r; |
3016 | ||
3017 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3018 | ||
37c644f2 AO |
3019 | r_type = ELF32_R_TYPE (rel->r_info); |
3020 | ||
3021 | /* Many of the relocs are only used for relaxing, and are | |
3022 | handled entirely by the relaxation code. */ | |
3023 | if (r_type > (int) R_SH_LAST_INVALID_RELOC | |
3024 | && r_type < (int) R_SH_LOOP_START) | |
3025 | continue; | |
c5aeb40f AO |
3026 | if (r_type == (int) R_SH_NONE) |
3027 | continue; | |
37c644f2 AO |
3028 | |
3029 | if (r_type < 0 | |
3030 | || r_type >= R_SH_max | |
3031 | || (r_type >= (int) R_SH_FIRST_INVALID_RELOC | |
06bb75c1 AO |
3032 | && r_type <= (int) R_SH_LAST_INVALID_RELOC) |
3033 | || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2 | |
3034 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)) | |
37c644f2 AO |
3035 | { |
3036 | bfd_set_error (bfd_error_bad_value); | |
3037 | return false; | |
3038 | } | |
3039 | ||
3040 | howto = sh_elf_howto_table + r_type; | |
3041 | ||
3042 | /* This is a final link. */ | |
3043 | h = NULL; | |
3044 | sym = NULL; | |
3045 | sec = NULL; | |
3046 | if (r_symndx < symtab_hdr->sh_info) | |
3047 | { | |
3048 | sym = local_syms + r_symndx; | |
3049 | sec = local_sections[r_symndx]; | |
3050 | relocation = (sec->output_section->vma | |
3051 | + sec->output_offset | |
3052 | + sym->st_value); | |
8a3975e6 AO |
3053 | |
3054 | if (info->relocateable) | |
3055 | { | |
3056 | /* This is a relocateable link. We don't have to change | |
3057 | anything, unless the reloc is against a section symbol, | |
3058 | in which case we have to adjust according to where the | |
3059 | section symbol winds up in the output section. */ | |
3060 | sym = local_syms + r_symndx; | |
3061 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3062 | goto final_link_relocate; | |
3063 | ||
3064 | continue; | |
3065 | } | |
37c644f2 AO |
3066 | } |
3067 | else | |
3068 | { | |
8a3975e6 AO |
3069 | /* Section symbol are never (?) placed in the hash table, so |
3070 | we can just ignore hash relocations when creating a | |
3071 | relocateable object file. */ | |
3072 | if (info->relocateable) | |
3073 | continue; | |
3074 | ||
37c644f2 AO |
3075 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3076 | while (h->root.type == bfd_link_hash_indirect | |
3077 | || h->root.type == bfd_link_hash_warning) | |
3078 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3079 | if (h->root.type == bfd_link_hash_defined | |
3080 | || h->root.type == bfd_link_hash_defweak) | |
3081 | { | |
3082 | sec = h->root.u.def.section; | |
3083 | /* In these cases, we don't need the relocation value. | |
3084 | We check specially because in some obscure cases | |
435b1e90 | 3085 | sec->output_section will be NULL. */ |
37c644f2 AO |
3086 | if (r_type == R_SH_GOTPC |
3087 | || (r_type == R_SH_PLT32 | |
3088 | && h->plt.offset != (bfd_vma) -1) | |
3089 | || (r_type == R_SH_GOT32 | |
3090 | && elf_hash_table (info)->dynamic_sections_created | |
3091 | && (! info->shared | |
3092 | || (! info->symbolic && h->dynindx != -1) | |
3093 | || (h->elf_link_hash_flags | |
3094 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
3095 | /* The cases above are those in which relocation is | |
3096 | overwritten in the switch block below. The cases | |
3097 | below are those in which we must defer relocation | |
3098 | to run-time, because we can't resolve absolute | |
3099 | addresses when creating a shared library. */ | |
3100 | || (info->shared | |
3101 | && ((! info->symbolic && h->dynindx != -1) | |
3102 | || (h->elf_link_hash_flags | |
3103 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3104 | && ((r_type == R_SH_DIR32 | |
3105 | && !(ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
3106 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)) | |
3107 | || r_type == R_SH_REL32) | |
3108 | && ((input_section->flags & SEC_ALLOC) != 0 | |
3109 | /* DWARF will emit R_SH_DIR32 relocations in its | |
3110 | sections against symbols defined externally | |
3111 | in shared libraries. We can't do anything | |
3112 | with them here. */ | |
3113 | || (input_section->flags & SEC_DEBUGGING) != 0))) | |
3114 | relocation = 0; | |
3115 | else if (sec->output_section == NULL) | |
3116 | { | |
3117 | (*_bfd_error_handler) | |
3118 | (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), | |
3119 | bfd_get_filename (input_bfd), h->root.root.string, | |
3120 | bfd_get_section_name (input_bfd, input_section)); | |
3121 | relocation = 0; | |
3122 | } | |
3123 | else | |
3124 | relocation = (h->root.u.def.value | |
3125 | + sec->output_section->vma | |
3126 | + sec->output_offset); | |
3127 | } | |
3128 | else if (h->root.type == bfd_link_hash_undefweak) | |
3129 | relocation = 0; | |
3130 | else if (info->shared && !info->symbolic && !info->no_undefined) | |
3131 | relocation = 0; | |
3132 | else | |
3133 | { | |
3134 | if (! ((*info->callbacks->undefined_symbol) | |
3135 | (info, h->root.root.string, input_bfd, | |
3136 | input_section, rel->r_offset, true))) | |
3137 | return false; | |
3138 | relocation = 0; | |
3139 | } | |
3140 | } | |
3141 | ||
435b1e90 | 3142 | switch ((int) r_type) |
37c644f2 AO |
3143 | { |
3144 | final_link_relocate: | |
3145 | /* COFF relocs don't use the addend. The addend is used for | |
435b1e90 | 3146 | R_SH_DIR32 to be compatible with other compilers. */ |
37c644f2 AO |
3147 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3148 | contents, rel->r_offset, | |
3149 | relocation, addend); | |
3150 | break; | |
3151 | ||
3152 | case R_SH_IND12W: | |
cd6ec716 DD |
3153 | relocation -= 4; |
3154 | goto final_link_relocate; | |
3155 | ||
37c644f2 AO |
3156 | case R_SH_DIR8WPN: |
3157 | case R_SH_DIR8WPZ: | |
3158 | case R_SH_DIR8WPL: | |
cd6ec716 DD |
3159 | /* If the reloc is against the start of this section, then |
3160 | the assembler has already taken care of it and the reloc | |
3161 | is here only to assist in relaxing. If the reloc is not | |
3162 | against the start of this section, then it's against an | |
3163 | external symbol and we must deal with it ourselves. */ | |
3164 | if (input_section->output_section->vma + input_section->output_offset | |
3165 | != relocation) | |
3166 | { | |
3167 | int disp = (relocation | |
3168 | - input_section->output_section->vma | |
3169 | - input_section->output_offset | |
3170 | - rel->r_offset); | |
3171 | int mask = 0; | |
3172 | switch (r_type) | |
3173 | { | |
3174 | case R_SH_DIR8WPN: | |
3175 | case R_SH_DIR8WPZ: mask = 1; break; | |
3176 | case R_SH_DIR8WPL: mask = 3; break; | |
3177 | default: mask = 0; break; | |
3178 | } | |
3179 | if (disp & mask) | |
3180 | { | |
3181 | ((*_bfd_error_handler) | |
3182 | (_("%s: 0x%lx: fatal: unaligned branch target for relax-support relocation"), | |
3183 | bfd_get_filename (input_section->owner), | |
3184 | (unsigned long) rel->r_offset)); | |
3185 | bfd_set_error (bfd_error_bad_value); | |
3186 | return false; | |
3187 | } | |
3188 | relocation -= 4; | |
3189 | goto final_link_relocate; | |
3190 | } | |
3191 | r = bfd_reloc_ok; | |
3192 | break; | |
37c644f2 AO |
3193 | |
3194 | default: | |
3195 | bfd_set_error (bfd_error_bad_value); | |
3196 | return false; | |
3197 | ||
3198 | case R_SH_DIR32: | |
3199 | case R_SH_REL32: | |
3200 | if (info->shared | |
3201 | && (input_section->flags & SEC_ALLOC) != 0 | |
3202 | && (r_type != R_SH_REL32 | |
3203 | || (h != NULL | |
3204 | && h->dynindx != -1 | |
3205 | && (! info->symbolic | |
3206 | || (h->elf_link_hash_flags | |
3207 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
3208 | { | |
3209 | Elf_Internal_Rela outrel; | |
3210 | boolean skip, relocate; | |
3211 | ||
3212 | /* When generating a shared object, these relocations | |
3213 | are copied into the output file to be resolved at run | |
3214 | time. */ | |
3215 | ||
3216 | if (sreloc == NULL) | |
3217 | { | |
3218 | const char *name; | |
3219 | ||
3220 | name = (bfd_elf_string_from_elf_section | |
3221 | (input_bfd, | |
3222 | elf_elfheader (input_bfd)->e_shstrndx, | |
3223 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3224 | if (name == NULL) | |
3225 | return false; | |
3226 | ||
3227 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
3228 | && strcmp (bfd_get_section_name (input_bfd, | |
3229 | input_section), | |
3230 | name + 5) == 0); | |
3231 | ||
3232 | sreloc = bfd_get_section_by_name (dynobj, name); | |
3233 | BFD_ASSERT (sreloc != NULL); | |
3234 | } | |
3235 | ||
3236 | skip = false; | |
3237 | ||
3238 | if (elf_section_data (input_section)->stab_info == NULL) | |
3239 | outrel.r_offset = rel->r_offset; | |
3240 | else | |
3241 | { | |
3242 | bfd_vma off; | |
3243 | ||
3244 | off = (_bfd_stab_section_offset | |
3245 | (output_bfd, &elf_hash_table (info)->stab_info, | |
3246 | input_section, | |
3247 | &elf_section_data (input_section)->stab_info, | |
3248 | rel->r_offset)); | |
3249 | if (off == (bfd_vma) -1) | |
3250 | skip = true; | |
3251 | outrel.r_offset = off; | |
3252 | } | |
3253 | ||
3254 | outrel.r_offset += (input_section->output_section->vma | |
3255 | + input_section->output_offset); | |
3256 | ||
3257 | if (skip) | |
3258 | { | |
3259 | memset (&outrel, 0, sizeof outrel); | |
3260 | relocate = false; | |
3261 | } | |
3262 | else if (r_type == R_SH_REL32) | |
3263 | { | |
3264 | BFD_ASSERT (h != NULL && h->dynindx != -1); | |
3265 | relocate = false; | |
3266 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32); | |
3267 | outrel.r_addend = rel->r_addend; | |
3268 | } | |
3269 | else | |
3270 | { | |
3271 | /* h->dynindx may be -1 if this symbol was marked to | |
3272 | become local. */ | |
3273 | if (h == NULL | |
3274 | || ((info->symbolic || h->dynindx == -1) | |
3275 | && (h->elf_link_hash_flags | |
3276 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
3277 | { | |
3278 | relocate = true; | |
3279 | outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); | |
3280 | outrel.r_addend = relocation + rel->r_addend; | |
3281 | } | |
3282 | else | |
3283 | { | |
3284 | BFD_ASSERT (h->dynindx != -1); | |
3285 | relocate = false; | |
3286 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32); | |
3287 | outrel.r_addend = relocation + rel->r_addend; | |
3288 | } | |
3289 | } | |
3290 | ||
3291 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
435b1e90 KH |
3292 | (((Elf32_External_Rela *) |
3293 | sreloc->contents) | |
3294 | + sreloc->reloc_count)); | |
37c644f2 AO |
3295 | ++sreloc->reloc_count; |
3296 | ||
3297 | /* If this reloc is against an external symbol, we do | |
3298 | not want to fiddle with the addend. Otherwise, we | |
3299 | need to include the symbol value so that it becomes | |
3300 | an addend for the dynamic reloc. */ | |
3301 | if (! relocate) | |
3302 | continue; | |
3303 | } | |
3304 | else if (r_type == R_SH_DIR32) | |
3305 | addend = rel->r_addend; | |
3306 | goto final_link_relocate; | |
3307 | ||
3308 | case R_SH_GOT32: | |
3309 | /* Relocation is to the entry for this symbol in the global | |
3310 | offset table. */ | |
3311 | if (sgot == NULL) | |
3312 | { | |
3313 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3314 | BFD_ASSERT (sgot != NULL); | |
3315 | } | |
3316 | ||
3317 | if (h != NULL) | |
3318 | { | |
3319 | bfd_vma off; | |
3320 | ||
3321 | off = h->got.offset; | |
3322 | BFD_ASSERT (off != (bfd_vma) -1); | |
3323 | ||
3324 | if (! elf_hash_table (info)->dynamic_sections_created | |
3325 | || (info->shared | |
3326 | && (info->symbolic || h->dynindx == -1 | |
3327 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
3328 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
3329 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
3330 | { | |
3331 | /* This is actually a static link, or it is a | |
3332 | -Bsymbolic link and the symbol is defined | |
3333 | locally, or the symbol was forced to be local | |
3334 | because of a version file. We must initialize | |
3335 | this entry in the global offset table. Since the | |
3336 | offset must always be a multiple of 4, we use the | |
3337 | least significant bit to record whether we have | |
3338 | initialized it already. | |
3339 | ||
3340 | When doing a dynamic link, we create a .rela.got | |
3341 | relocation entry to initialize the value. This | |
3342 | is done in the finish_dynamic_symbol routine. */ | |
3343 | if ((off & 1) != 0) | |
3344 | off &= ~1; | |
3345 | else | |
3346 | { | |
3347 | bfd_put_32 (output_bfd, relocation, | |
3348 | sgot->contents + off); | |
3349 | h->got.offset |= 1; | |
3350 | } | |
3351 | } | |
3352 | ||
3353 | relocation = sgot->output_offset + off; | |
3354 | } | |
3355 | else | |
3356 | { | |
3357 | bfd_vma off; | |
3358 | ||
3359 | BFD_ASSERT (local_got_offsets != NULL | |
3360 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
3361 | ||
3362 | off = local_got_offsets[r_symndx]; | |
3363 | ||
3364 | /* The offset must always be a multiple of 4. We use | |
3365 | the least significant bit to record whether we have | |
3366 | already generated the necessary reloc. */ | |
3367 | if ((off & 1) != 0) | |
3368 | off &= ~1; | |
3369 | else | |
3370 | { | |
3371 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
3372 | ||
3373 | if (info->shared) | |
3374 | { | |
3375 | asection *srelgot; | |
3376 | Elf_Internal_Rela outrel; | |
3377 | ||
3378 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3379 | BFD_ASSERT (srelgot != NULL); | |
3380 | ||
3381 | outrel.r_offset = (sgot->output_section->vma | |
3382 | + sgot->output_offset | |
3383 | + off); | |
3384 | outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); | |
3385 | outrel.r_addend = relocation; | |
3386 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3387 | (((Elf32_External_Rela *) | |
3388 | srelgot->contents) | |
3389 | + srelgot->reloc_count)); | |
3390 | ++srelgot->reloc_count; | |
3391 | } | |
3392 | ||
3393 | local_got_offsets[r_symndx] |= 1; | |
3394 | } | |
3395 | ||
3396 | relocation = sgot->output_offset + off; | |
3397 | } | |
3398 | ||
3399 | goto final_link_relocate; | |
3400 | ||
3401 | case R_SH_GOTOFF: | |
3402 | /* Relocation is relative to the start of the global offset | |
3403 | table. */ | |
3404 | ||
3405 | if (sgot == NULL) | |
3406 | { | |
3407 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3408 | BFD_ASSERT (sgot != NULL); | |
3409 | } | |
3410 | ||
3411 | /* Note that sgot->output_offset is not involved in this | |
3412 | calculation. We always want the start of .got. If we | |
3413 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
3414 | permitted by the ABI, we might have to change this | |
3415 | calculation. */ | |
3416 | relocation -= sgot->output_section->vma; | |
3417 | ||
3418 | goto final_link_relocate; | |
3419 | ||
3420 | case R_SH_GOTPC: | |
3421 | /* Use global offset table as symbol value. */ | |
3422 | ||
3423 | if (sgot == NULL) | |
3424 | { | |
3425 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3426 | BFD_ASSERT (sgot != NULL); | |
3427 | } | |
3428 | ||
3429 | relocation = sgot->output_section->vma; | |
3430 | ||
3431 | goto final_link_relocate; | |
3432 | ||
3433 | case R_SH_PLT32: | |
3434 | /* Relocation is to the entry for this symbol in the | |
3435 | procedure linkage table. */ | |
3436 | ||
3437 | /* Resolve a PLT reloc against a local symbol directly, | |
3438 | without using the procedure linkage table. */ | |
3439 | if (h == NULL) | |
3440 | goto final_link_relocate; | |
3441 | ||
3442 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
3443 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
3444 | goto final_link_relocate; | |
3445 | ||
3446 | if (h->plt.offset == (bfd_vma) -1) | |
3447 | { | |
3448 | /* We didn't make a PLT entry for this symbol. This | |
3449 | happens when statically linking PIC code, or when | |
3450 | using -Bsymbolic. */ | |
3451 | goto final_link_relocate; | |
3452 | } | |
3453 | ||
3454 | if (splt == NULL) | |
3455 | { | |
3456 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3457 | BFD_ASSERT (splt != NULL); | |
3458 | } | |
3459 | ||
3460 | relocation = (splt->output_section->vma | |
3461 | + splt->output_offset | |
3462 | + h->plt.offset); | |
3463 | ||
3464 | goto final_link_relocate; | |
3465 | ||
3466 | case R_SH_LOOP_START: | |
3467 | { | |
3468 | static bfd_vma start, end; | |
3469 | ||
3470 | start = (relocation + rel->r_addend | |
3471 | - (sec->output_section->vma + sec->output_offset)); | |
3472 | r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, | |
3473 | rel->r_offset, sec, start, end); | |
3474 | break; | |
3475 | ||
3476 | case R_SH_LOOP_END: | |
3477 | end = (relocation + rel->r_addend | |
3478 | - (sec->output_section->vma + sec->output_offset)); | |
3479 | r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, | |
3480 | rel->r_offset, sec, start, end); | |
3481 | break; | |
3482 | } | |
3483 | } | |
3484 | ||
3485 | if (r != bfd_reloc_ok) | |
3486 | { | |
3487 | switch (r) | |
3488 | { | |
3489 | default: | |
3490 | case bfd_reloc_outofrange: | |
3491 | abort (); | |
3492 | case bfd_reloc_overflow: | |
3493 | { | |
3494 | const char *name; | |
3495 | ||
3496 | if (h != NULL) | |
3497 | name = h->root.root.string; | |
3498 | else | |
3499 | { | |
252b5132 RH |
3500 | name = (bfd_elf_string_from_elf_section |
3501 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3502 | if (name == NULL) | |
3503 | return false; | |
3504 | if (*name == '\0') | |
3505 | name = bfd_section_name (input_bfd, sec); | |
3506 | } | |
3507 | if (! ((*info->callbacks->reloc_overflow) | |
3508 | (info, name, howto->name, (bfd_vma) 0, | |
3509 | input_bfd, input_section, rel->r_offset))) | |
3510 | return false; | |
3511 | } | |
3512 | break; | |
3513 | } | |
3514 | } | |
3515 | } | |
3516 | ||
3517 | return true; | |
3518 | } | |
3519 | ||
3520 | /* This is a version of bfd_generic_get_relocated_section_contents | |
3521 | which uses sh_elf_relocate_section. */ | |
3522 | ||
3523 | static bfd_byte * | |
3524 | sh_elf_get_relocated_section_contents (output_bfd, link_info, link_order, | |
435b1e90 | 3525 | data, relocateable, symbols) |
252b5132 RH |
3526 | bfd *output_bfd; |
3527 | struct bfd_link_info *link_info; | |
3528 | struct bfd_link_order *link_order; | |
3529 | bfd_byte *data; | |
3530 | boolean relocateable; | |
3531 | asymbol **symbols; | |
3532 | { | |
3533 | Elf_Internal_Shdr *symtab_hdr; | |
3534 | asection *input_section = link_order->u.indirect.section; | |
3535 | bfd *input_bfd = input_section->owner; | |
3536 | asection **sections = NULL; | |
3537 | Elf_Internal_Rela *internal_relocs = NULL; | |
3538 | Elf32_External_Sym *external_syms = NULL; | |
3539 | Elf_Internal_Sym *internal_syms = NULL; | |
3540 | ||
3541 | /* We only need to handle the case of relaxing, or of having a | |
3542 | particular set of section contents, specially. */ | |
3543 | if (relocateable | |
3544 | || elf_section_data (input_section)->this_hdr.contents == NULL) | |
3545 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3546 | link_order, data, | |
3547 | relocateable, | |
3548 | symbols); | |
3549 | ||
3550 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3551 | ||
3552 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
3553 | input_section->_raw_size); | |
3554 | ||
3555 | if ((input_section->flags & SEC_RELOC) != 0 | |
3556 | && input_section->reloc_count > 0) | |
3557 | { | |
3558 | Elf_Internal_Sym *isymp; | |
3559 | asection **secpp; | |
3560 | Elf32_External_Sym *esym, *esymend; | |
3561 | ||
3562 | if (symtab_hdr->contents != NULL) | |
3563 | external_syms = (Elf32_External_Sym *) symtab_hdr->contents; | |
3564 | else | |
3565 | { | |
3566 | external_syms = ((Elf32_External_Sym *) | |
3567 | bfd_malloc (symtab_hdr->sh_info | |
3568 | * sizeof (Elf32_External_Sym))); | |
3569 | if (external_syms == NULL && symtab_hdr->sh_info > 0) | |
3570 | goto error_return; | |
3571 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
3572 | || (bfd_read (external_syms, sizeof (Elf32_External_Sym), | |
3573 | symtab_hdr->sh_info, input_bfd) | |
3574 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) | |
3575 | goto error_return; | |
3576 | } | |
3577 | ||
3578 | internal_relocs = (_bfd_elf32_link_read_relocs | |
3579 | (input_bfd, input_section, (PTR) NULL, | |
3580 | (Elf_Internal_Rela *) NULL, false)); | |
3581 | if (internal_relocs == NULL) | |
3582 | goto error_return; | |
3583 | ||
3584 | internal_syms = ((Elf_Internal_Sym *) | |
3585 | bfd_malloc (symtab_hdr->sh_info | |
3586 | * sizeof (Elf_Internal_Sym))); | |
3587 | if (internal_syms == NULL && symtab_hdr->sh_info > 0) | |
3588 | goto error_return; | |
3589 | ||
3590 | sections = (asection **) bfd_malloc (symtab_hdr->sh_info | |
3591 | * sizeof (asection *)); | |
3592 | if (sections == NULL && symtab_hdr->sh_info > 0) | |
3593 | goto error_return; | |
3594 | ||
3595 | isymp = internal_syms; | |
3596 | secpp = sections; | |
3597 | esym = external_syms; | |
3598 | esymend = esym + symtab_hdr->sh_info; | |
3599 | for (; esym < esymend; ++esym, ++isymp, ++secpp) | |
3600 | { | |
3601 | asection *isec; | |
3602 | ||
3603 | bfd_elf32_swap_symbol_in (input_bfd, esym, isymp); | |
3604 | ||
3605 | if (isymp->st_shndx == SHN_UNDEF) | |
3606 | isec = bfd_und_section_ptr; | |
3607 | else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE) | |
3608 | isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx); | |
3609 | else if (isymp->st_shndx == SHN_ABS) | |
3610 | isec = bfd_abs_section_ptr; | |
3611 | else if (isymp->st_shndx == SHN_COMMON) | |
3612 | isec = bfd_com_section_ptr; | |
3613 | else | |
3614 | { | |
3615 | /* Who knows? */ | |
3616 | isec = NULL; | |
3617 | } | |
3618 | ||
3619 | *secpp = isec; | |
3620 | } | |
3621 | ||
3622 | if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd, | |
3623 | input_section, data, internal_relocs, | |
3624 | internal_syms, sections)) | |
3625 | goto error_return; | |
3626 | ||
3627 | if (sections != NULL) | |
3628 | free (sections); | |
3629 | sections = NULL; | |
3630 | if (internal_syms != NULL) | |
3631 | free (internal_syms); | |
3632 | internal_syms = NULL; | |
3633 | if (external_syms != NULL && symtab_hdr->contents == NULL) | |
3634 | free (external_syms); | |
3635 | external_syms = NULL; | |
3636 | if (internal_relocs != elf_section_data (input_section)->relocs) | |
3637 | free (internal_relocs); | |
3638 | internal_relocs = NULL; | |
3639 | } | |
3640 | ||
3641 | return data; | |
3642 | ||
3643 | error_return: | |
3644 | if (internal_relocs != NULL | |
3645 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3646 | free (internal_relocs); | |
3647 | if (external_syms != NULL && symtab_hdr->contents == NULL) | |
3648 | free (external_syms); | |
3649 | if (internal_syms != NULL) | |
3650 | free (internal_syms); | |
3651 | if (sections != NULL) | |
3652 | free (sections); | |
3653 | return NULL; | |
3654 | } | |
917583ad | 3655 | |
252b5132 RH |
3656 | static asection * |
3657 | sh_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
435b1e90 KH |
3658 | bfd *abfd; |
3659 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
3660 | Elf_Internal_Rela *rel; | |
3661 | struct elf_link_hash_entry *h; | |
3662 | Elf_Internal_Sym *sym; | |
252b5132 RH |
3663 | { |
3664 | if (h != NULL) | |
3665 | { | |
3666 | switch (ELF32_R_TYPE (rel->r_info)) | |
435b1e90 KH |
3667 | { |
3668 | case R_SH_GNU_VTINHERIT: | |
3669 | case R_SH_GNU_VTENTRY: | |
3670 | break; | |
252b5132 | 3671 | |
435b1e90 KH |
3672 | default: |
3673 | switch (h->root.type) | |
3674 | { | |
3675 | case bfd_link_hash_defined: | |
3676 | case bfd_link_hash_defweak: | |
3677 | return h->root.u.def.section; | |
252b5132 | 3678 | |
435b1e90 KH |
3679 | case bfd_link_hash_common: |
3680 | return h->root.u.c.p->section; | |
e049a0de | 3681 | |
435b1e90 KH |
3682 | default: |
3683 | break; | |
3684 | } | |
3685 | } | |
3686 | } | |
3687 | else | |
3688 | { | |
3689 | if (!(elf_bad_symtab (abfd) | |
3690 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
3691 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
252b5132 | 3692 | && sym->st_shndx != SHN_COMMON)) |
38b1a46c | 3693 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
435b1e90 | 3694 | } |
252b5132 RH |
3695 | return NULL; |
3696 | } | |
3697 | ||
37c644f2 AO |
3698 | /* Update the got entry reference counts for the section being removed. */ |
3699 | ||
252b5132 RH |
3700 | static boolean |
3701 | sh_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
5f771d47 ILT |
3702 | bfd *abfd ATTRIBUTE_UNUSED; |
3703 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
3704 | asection *sec ATTRIBUTE_UNUSED; | |
3705 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
252b5132 | 3706 | { |
37c644f2 AO |
3707 | /* We use got and plt entries for sh, but it would seem that the |
3708 | existing SH code does no sort of reference counting or whatnot on | |
3709 | its GOT and PLT entries, so it is not possible to garbage collect | |
435b1e90 | 3710 | them at this time. */ |
252b5132 RH |
3711 | return true; |
3712 | } | |
3713 | ||
3714 | /* Look through the relocs for a section during the first phase. | |
3715 | Since we don't do .gots or .plts, we just need to consider the | |
3716 | virtual table relocs for gc. */ | |
435b1e90 | 3717 | |
252b5132 RH |
3718 | static boolean |
3719 | sh_elf_check_relocs (abfd, info, sec, relocs) | |
3720 | bfd *abfd; | |
3721 | struct bfd_link_info *info; | |
3722 | asection *sec; | |
3723 | const Elf_Internal_Rela *relocs; | |
3724 | { | |
3725 | Elf_Internal_Shdr *symtab_hdr; | |
3726 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
3727 | const Elf_Internal_Rela *rel; | |
3728 | const Elf_Internal_Rela *rel_end; | |
37c644f2 AO |
3729 | bfd *dynobj; |
3730 | bfd_vma *local_got_offsets; | |
3731 | asection *sgot; | |
3732 | asection *srelgot; | |
3733 | asection *sreloc; | |
435b1e90 | 3734 | |
37c644f2 AO |
3735 | sgot = NULL; |
3736 | srelgot = NULL; | |
3737 | sreloc = NULL; | |
3738 | ||
252b5132 RH |
3739 | if (info->relocateable) |
3740 | return true; | |
435b1e90 | 3741 | |
252b5132 RH |
3742 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3743 | sym_hashes = elf_sym_hashes (abfd); | |
435b1e90 | 3744 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
252b5132 RH |
3745 | if (!elf_bad_symtab (abfd)) |
3746 | sym_hashes_end -= symtab_hdr->sh_info; | |
435b1e90 | 3747 | |
37c644f2 AO |
3748 | dynobj = elf_hash_table (info)->dynobj; |
3749 | local_got_offsets = elf_local_got_offsets (abfd); | |
3750 | ||
252b5132 RH |
3751 | rel_end = relocs + sec->reloc_count; |
3752 | for (rel = relocs; rel < rel_end; rel++) | |
3753 | { | |
3754 | struct elf_link_hash_entry *h; | |
3755 | unsigned long r_symndx; | |
435b1e90 | 3756 | |
252b5132 RH |
3757 | r_symndx = ELF32_R_SYM (rel->r_info); |
3758 | if (r_symndx < symtab_hdr->sh_info) | |
435b1e90 | 3759 | h = NULL; |
252b5132 | 3760 | else |
435b1e90 KH |
3761 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3762 | ||
37c644f2 AO |
3763 | /* Some relocs require a global offset table. */ |
3764 | if (dynobj == NULL) | |
3765 | { | |
3766 | switch (ELF32_R_TYPE (rel->r_info)) | |
3767 | { | |
3768 | case R_SH_GOT32: | |
3769 | case R_SH_GOTOFF: | |
3770 | case R_SH_GOTPC: | |
3771 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
3772 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
3773 | return false; | |
3774 | break; | |
3775 | ||
3776 | default: | |
3777 | break; | |
3778 | } | |
3779 | } | |
3780 | ||
252b5132 RH |
3781 | switch (ELF32_R_TYPE (rel->r_info)) |
3782 | { | |
3783 | /* This relocation describes the C++ object vtable hierarchy. | |
3784 | Reconstruct it for later use during GC. */ | |
435b1e90 KH |
3785 | case R_SH_GNU_VTINHERIT: |
3786 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3787 | return false; | |
3788 | break; | |
3789 | ||
252b5132 RH |
3790 | /* This relocation describes which C++ vtable entries are actually |
3791 | used. Record for later use during GC. */ | |
435b1e90 KH |
3792 | case R_SH_GNU_VTENTRY: |
3793 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
3794 | return false; | |
3795 | break; | |
37c644f2 AO |
3796 | |
3797 | case R_SH_GOT32: | |
3798 | /* This symbol requires a global offset table entry. */ | |
3799 | ||
3800 | if (sgot == NULL) | |
3801 | { | |
3802 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3803 | BFD_ASSERT (sgot != NULL); | |
3804 | } | |
3805 | ||
3806 | if (srelgot == NULL | |
3807 | && (h != NULL || info->shared)) | |
3808 | { | |
3809 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3810 | if (srelgot == NULL) | |
3811 | { | |
3812 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
3813 | if (srelgot == NULL | |
3814 | || ! bfd_set_section_flags (dynobj, srelgot, | |
3815 | (SEC_ALLOC | |
3816 | | SEC_LOAD | |
3817 | | SEC_HAS_CONTENTS | |
3818 | | SEC_IN_MEMORY | |
3819 | | SEC_LINKER_CREATED | |
3820 | | SEC_READONLY)) | |
3821 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
3822 | return false; | |
3823 | } | |
3824 | } | |
3825 | ||
3826 | if (h != NULL) | |
3827 | { | |
3828 | if (h->got.offset != (bfd_vma) -1) | |
3829 | { | |
3830 | /* We have already allocated space in the .got. */ | |
3831 | break; | |
3832 | } | |
3833 | h->got.offset = sgot->_raw_size; | |
3834 | ||
3835 | /* Make sure this symbol is output as a dynamic symbol. */ | |
3836 | if (h->dynindx == -1) | |
3837 | { | |
3838 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
3839 | return false; | |
3840 | } | |
3841 | ||
3842 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
3843 | } | |
3844 | else | |
3845 | { | |
435b1e90 KH |
3846 | /* This is a global offset table entry for a local |
3847 | symbol. */ | |
37c644f2 AO |
3848 | if (local_got_offsets == NULL) |
3849 | { | |
3850 | size_t size; | |
3851 | register unsigned int i; | |
3852 | ||
3853 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
3854 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
3855 | if (local_got_offsets == NULL) | |
3856 | return false; | |
3857 | elf_local_got_offsets (abfd) = local_got_offsets; | |
3858 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3859 | local_got_offsets[i] = (bfd_vma) -1; | |
3860 | } | |
3861 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
3862 | { | |
3863 | /* We have already allocated space in the .got. */ | |
3864 | break; | |
3865 | } | |
3866 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
3867 | ||
3868 | if (info->shared) | |
3869 | { | |
3870 | /* If we are generating a shared object, we need to | |
3871 | output a R_SH_RELATIVE reloc so that the dynamic | |
3872 | linker can adjust this GOT entry. */ | |
3873 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
3874 | } | |
3875 | } | |
3876 | ||
3877 | sgot->_raw_size += 4; | |
3878 | ||
3879 | break; | |
3880 | ||
3881 | case R_SH_PLT32: | |
3882 | /* This symbol requires a procedure linkage table entry. We | |
3883 | actually build the entry in adjust_dynamic_symbol, | |
3884 | because this might be a case of linking PIC code which is | |
3885 | never referenced by a dynamic object, in which case we | |
3886 | don't need to generate a procedure linkage table entry | |
3887 | after all. */ | |
3888 | ||
3889 | /* If this is a local symbol, we resolve it directly without | |
3890 | creating a procedure linkage table entry. */ | |
3891 | if (h == NULL) | |
3892 | continue; | |
3893 | ||
3894 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
3895 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
3896 | break; | |
3897 | ||
3898 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3899 | ||
3900 | break; | |
3901 | ||
3902 | case R_SH_DIR32: | |
3903 | case R_SH_REL32: | |
3904 | if (h != NULL) | |
3905 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
3906 | ||
3907 | /* If we are creating a shared library, and this is a reloc | |
3908 | against a global symbol, or a non PC relative reloc | |
3909 | against a local symbol, then we need to copy the reloc | |
3910 | into the shared library. However, if we are linking with | |
3911 | -Bsymbolic, we do not need to copy a reloc against a | |
3912 | global symbol which is defined in an object we are | |
3913 | including in the link (i.e., DEF_REGULAR is set). At | |
3914 | this point we have not seen all the input files, so it is | |
3915 | possible that DEF_REGULAR is not set now but will be set | |
3916 | later (it is never cleared). We account for that | |
3917 | possibility below by storing information in the | |
3918 | pcrel_relocs_copied field of the hash table entry. */ | |
3919 | if (info->shared | |
3920 | && (sec->flags & SEC_ALLOC) != 0 | |
3921 | && (ELF32_R_TYPE (rel->r_info) != R_SH_REL32 | |
3922 | || (h != NULL | |
3923 | && (! info->symbolic | |
3924 | || (h->elf_link_hash_flags | |
3925 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
3926 | { | |
3927 | /* When creating a shared object, we must copy these | |
3928 | reloc types into the output file. We create a reloc | |
3929 | section in dynobj and make room for this reloc. */ | |
3930 | if (sreloc == NULL) | |
3931 | { | |
3932 | const char *name; | |
3933 | ||
3934 | name = (bfd_elf_string_from_elf_section | |
3935 | (abfd, | |
3936 | elf_elfheader (abfd)->e_shstrndx, | |
3937 | elf_section_data (sec)->rel_hdr.sh_name)); | |
3938 | if (name == NULL) | |
3939 | return false; | |
3940 | ||
3941 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
3942 | && strcmp (bfd_get_section_name (abfd, sec), | |
3943 | name + 5) == 0); | |
3944 | ||
3945 | sreloc = bfd_get_section_by_name (dynobj, name); | |
3946 | if (sreloc == NULL) | |
3947 | { | |
3948 | flagword flags; | |
3949 | ||
3950 | sreloc = bfd_make_section (dynobj, name); | |
3951 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
3952 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3953 | if ((sec->flags & SEC_ALLOC) != 0) | |
3954 | flags |= SEC_ALLOC | SEC_LOAD; | |
3955 | if (sreloc == NULL | |
3956 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
3957 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
3958 | return false; | |
3959 | } | |
3960 | } | |
3961 | ||
3962 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
3963 | ||
3964 | /* If we are linking with -Bsymbolic, and this is a | |
3965 | global symbol, we count the number of PC relative | |
3966 | relocations we have entered for this symbol, so that | |
3967 | we can discard them again if the symbol is later | |
3968 | defined by a regular object. Note that this function | |
3969 | is only called if we are using an elf_sh linker | |
3970 | hash table, which means that h is really a pointer to | |
3971 | an elf_sh_link_hash_entry. */ | |
3972 | if (h != NULL && info->symbolic | |
3973 | && ELF32_R_TYPE (rel->r_info) == R_SH_REL32) | |
3974 | { | |
3975 | struct elf_sh_link_hash_entry *eh; | |
3976 | struct elf_sh_pcrel_relocs_copied *p; | |
3977 | ||
3978 | eh = (struct elf_sh_link_hash_entry *) h; | |
3979 | ||
3980 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
3981 | if (p->section == sreloc) | |
3982 | break; | |
3983 | ||
3984 | if (p == NULL) | |
3985 | { | |
3986 | p = ((struct elf_sh_pcrel_relocs_copied *) | |
3987 | bfd_alloc (dynobj, sizeof *p)); | |
3988 | if (p == NULL) | |
3989 | return false; | |
3990 | p->next = eh->pcrel_relocs_copied; | |
3991 | eh->pcrel_relocs_copied = p; | |
3992 | p->section = sreloc; | |
3993 | p->count = 0; | |
3994 | } | |
3995 | ||
3996 | ++p->count; | |
3997 | } | |
3998 | } | |
3999 | ||
4000 | break; | |
435b1e90 | 4001 | } |
252b5132 | 4002 | } |
435b1e90 | 4003 | |
252b5132 RH |
4004 | return true; |
4005 | } | |
4006 | ||
1630fd2b | 4007 | static boolean |
d4845d57 | 4008 | sh_elf_set_mach_from_flags (abfd) |
435b1e90 | 4009 | bfd *abfd; |
d4845d57 JR |
4010 | { |
4011 | flagword flags = elf_elfheader (abfd)->e_flags; | |
4012 | ||
86033394 | 4013 | switch (flags & EF_SH_MACH_MASK) |
d4845d57 JR |
4014 | { |
4015 | case EF_SH1: | |
4016 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh); | |
4017 | break; | |
4018 | case EF_SH2: | |
4019 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh2); | |
4020 | break; | |
4021 | case EF_SH_DSP: | |
4022 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh_dsp); | |
4023 | break; | |
4024 | case EF_SH3: | |
4025 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh3); | |
4026 | break; | |
4027 | case EF_SH3_DSP: | |
4028 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh3_dsp); | |
4029 | break; | |
4030 | case EF_SH3E: | |
4031 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh3e); | |
4032 | break; | |
4033 | case EF_SH_UNKNOWN: | |
4034 | case EF_SH4: | |
4035 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh4); | |
4036 | break; | |
4037 | default: | |
4038 | return false; | |
4039 | } | |
4040 | return true; | |
4041 | } | |
4042 | ||
435b1e90 KH |
4043 | /* Function to keep SH specific file flags. */ |
4044 | ||
d4845d57 JR |
4045 | static boolean |
4046 | sh_elf_set_private_flags (abfd, flags) | |
435b1e90 | 4047 | bfd *abfd; |
d4845d57 JR |
4048 | flagword flags; |
4049 | { | |
4050 | BFD_ASSERT (! elf_flags_init (abfd) | |
4051 | || elf_elfheader (abfd)->e_flags == flags); | |
4052 | ||
4053 | elf_elfheader (abfd)->e_flags = flags; | |
4054 | elf_flags_init (abfd) = true; | |
4055 | return sh_elf_set_mach_from_flags (abfd); | |
4056 | } | |
4057 | ||
4058 | /* Copy backend specific data from one object module to another */ | |
435b1e90 | 4059 | |
d4845d57 JR |
4060 | static boolean |
4061 | sh_elf_copy_private_data (ibfd, obfd) | |
38b1a46c NC |
4062 | bfd * ibfd; |
4063 | bfd * obfd; | |
d4845d57 | 4064 | { |
38b1a46c | 4065 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
d4845d57 JR |
4066 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
4067 | return true; | |
4068 | ||
4069 | return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags); | |
4070 | } | |
4071 | ||
4072 | /* This routine checks for linking big and little endian objects | |
4073 | together, and for linking sh-dsp with sh3e / sh4 objects. */ | |
4074 | ||
4075 | static boolean | |
4076 | sh_elf_merge_private_data (ibfd, obfd) | |
4077 | bfd *ibfd; | |
4078 | bfd *obfd; | |
4079 | { | |
4080 | flagword old_flags, new_flags; | |
4081 | ||
4082 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == false) | |
4083 | return false; | |
4084 | ||
4085 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4086 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4087 | return true; | |
4088 | ||
4089 | if (! elf_flags_init (obfd)) | |
4090 | { | |
a39b79b9 | 4091 | /* This happens when ld starts out with a 'blank' output file. */ |
d4845d57 | 4092 | elf_flags_init (obfd) = true; |
a39b79b9 | 4093 | elf_elfheader (obfd)->e_flags = EF_SH1; |
d4845d57 JR |
4094 | } |
4095 | old_flags = elf_elfheader (obfd)->e_flags; | |
4096 | new_flags = elf_elfheader (ibfd)->e_flags; | |
4097 | if ((EF_SH_HAS_DSP (old_flags) && EF_SH_HAS_FP (new_flags)) | |
4098 | || (EF_SH_HAS_DSP (new_flags) && EF_SH_HAS_FP (old_flags))) | |
4099 | { | |
4100 | (*_bfd_error_handler) | |
4101 | ("%s: uses %s instructions while previous modules use %s instructions", | |
4102 | bfd_get_filename (ibfd), | |
4103 | EF_SH_HAS_DSP (new_flags) ? "dsp" : "floating point", | |
4104 | EF_SH_HAS_DSP (new_flags) ? "floating point" : "dsp"); | |
4105 | bfd_set_error (bfd_error_bad_value); | |
4106 | return false; | |
4107 | } | |
4108 | elf_elfheader (obfd)->e_flags = EF_SH_MERGE_MACH (old_flags, new_flags); | |
4109 | ||
4110 | return sh_elf_set_mach_from_flags (obfd); | |
4111 | } | |
4112 | ||
37c644f2 AO |
4113 | /* Finish up dynamic symbol handling. We set the contents of various |
4114 | dynamic sections here. */ | |
4115 | ||
4116 | static boolean | |
4117 | sh_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4118 | bfd *output_bfd; | |
4119 | struct bfd_link_info *info; | |
4120 | struct elf_link_hash_entry *h; | |
4121 | Elf_Internal_Sym *sym; | |
4122 | { | |
4123 | bfd *dynobj; | |
4124 | ||
4125 | dynobj = elf_hash_table (info)->dynobj; | |
4126 | ||
4127 | if (h->plt.offset != (bfd_vma) -1) | |
4128 | { | |
4129 | asection *splt; | |
4130 | asection *sgot; | |
4131 | asection *srel; | |
4132 | ||
4133 | bfd_vma plt_index; | |
4134 | bfd_vma got_offset; | |
4135 | Elf_Internal_Rela rel; | |
4136 | ||
4137 | /* This symbol has an entry in the procedure linkage table. Set | |
4138 | it up. */ | |
4139 | ||
4140 | BFD_ASSERT (h->dynindx != -1); | |
4141 | ||
4142 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4143 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4144 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4145 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4146 | ||
4147 | /* Get the index in the procedure linkage table which | |
4148 | corresponds to this symbol. This is the index of this symbol | |
4149 | in all the symbols for which we are making plt entries. The | |
4150 | first entry in the procedure linkage table is reserved. */ | |
4151 | plt_index = h->plt.offset / elf_sh_sizeof_plt (info) - 1; | |
4152 | ||
4153 | /* Get the offset into the .got table of the entry that | |
4154 | corresponds to this function. Each .got entry is 4 bytes. | |
4155 | The first three are reserved. */ | |
4156 | got_offset = (plt_index + 3) * 4; | |
4157 | ||
4158 | /* Fill in the entry in the procedure linkage table. */ | |
4159 | if (! info->shared) | |
4160 | { | |
4161 | if (elf_sh_plt_entry == NULL) | |
4162 | { | |
435b1e90 | 4163 | elf_sh_plt_entry = (bfd_big_endian (output_bfd) ? |
37c644f2 AO |
4164 | elf_sh_plt_entry_be : elf_sh_plt_entry_le); |
4165 | } | |
4166 | memcpy (splt->contents + h->plt.offset, elf_sh_plt_entry, | |
4167 | elf_sh_sizeof_plt (info)); | |
4168 | bfd_put_32 (output_bfd, | |
4169 | (sgot->output_section->vma | |
4170 | + sgot->output_offset | |
4171 | + got_offset), | |
4172 | (splt->contents + h->plt.offset | |
4173 | + elf_sh_plt_symbol_offset (info))); | |
4174 | ||
4175 | bfd_put_32 (output_bfd, | |
4176 | (splt->output_section->vma + splt->output_offset), | |
4177 | (splt->contents + h->plt.offset | |
4178 | + elf_sh_plt_plt0_offset (info))); | |
4179 | } | |
4180 | else | |
4181 | { | |
4182 | if (elf_sh_pic_plt_entry == NULL) | |
4183 | { | |
435b1e90 | 4184 | elf_sh_pic_plt_entry = (bfd_big_endian (output_bfd) ? |
37c644f2 AO |
4185 | elf_sh_pic_plt_entry_be : |
4186 | elf_sh_pic_plt_entry_le); | |
4187 | } | |
4188 | memcpy (splt->contents + h->plt.offset, elf_sh_pic_plt_entry, | |
4189 | elf_sh_sizeof_plt (info)); | |
4190 | bfd_put_32 (output_bfd, got_offset, | |
4191 | (splt->contents + h->plt.offset | |
4192 | + elf_sh_plt_symbol_offset (info))); | |
4193 | } | |
4194 | ||
4195 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4196 | (splt->contents + h->plt.offset | |
4197 | + elf_sh_plt_reloc_offset (info))); | |
4198 | ||
4199 | /* Fill in the entry in the global offset table. */ | |
4200 | bfd_put_32 (output_bfd, | |
4201 | (splt->output_section->vma | |
4202 | + splt->output_offset | |
4203 | + h->plt.offset | |
4204 | + elf_sh_plt_temp_offset (info)), | |
4205 | sgot->contents + got_offset); | |
4206 | ||
4207 | /* Fill in the entry in the .rela.plt section. */ | |
4208 | rel.r_offset = (sgot->output_section->vma | |
4209 | + sgot->output_offset | |
4210 | + got_offset); | |
4211 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT); | |
4212 | rel.r_addend = 0; | |
4213 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
4214 | ((Elf32_External_Rela *) srel->contents | |
4215 | + plt_index)); | |
4216 | ||
4217 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
4218 | { | |
4219 | /* Mark the symbol as undefined, rather than as defined in | |
4220 | the .plt section. Leave the value alone. */ | |
4221 | sym->st_shndx = SHN_UNDEF; | |
4222 | } | |
4223 | } | |
4224 | ||
4225 | if (h->got.offset != (bfd_vma) -1) | |
4226 | { | |
4227 | asection *sgot; | |
4228 | asection *srel; | |
4229 | Elf_Internal_Rela rel; | |
4230 | ||
4231 | /* This symbol has an entry in the global offset table. Set it | |
4232 | up. */ | |
4233 | ||
4234 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4235 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4236 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4237 | ||
4238 | rel.r_offset = (sgot->output_section->vma | |
4239 | + sgot->output_offset | |
4240 | + (h->got.offset &~ 1)); | |
4241 | ||
4242 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4243 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4244 | the symbol was forced to be local because of a version file. | |
4245 | The entry in the global offset table will already have been | |
4246 | initialized in the relocate_section function. */ | |
4247 | if (info->shared | |
4248 | && (info->symbolic || h->dynindx == -1) | |
4249 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
4250 | { | |
4251 | rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); | |
4252 | rel.r_addend = (h->root.u.def.value | |
4253 | + h->root.u.def.section->output_section->vma | |
4254 | + h->root.u.def.section->output_offset); | |
4255 | } | |
4256 | else | |
4257 | { | |
4258 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4259 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT); | |
4260 | rel.r_addend = 0; | |
4261 | } | |
4262 | ||
4263 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
435b1e90 KH |
4264 | ((Elf32_External_Rela *) srel->contents |
4265 | + srel->reloc_count)); | |
37c644f2 AO |
4266 | ++srel->reloc_count; |
4267 | } | |
4268 | ||
4269 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
4270 | { | |
4271 | asection *s; | |
4272 | Elf_Internal_Rela rel; | |
4273 | ||
4274 | /* This symbol needs a copy reloc. Set it up. */ | |
4275 | ||
4276 | BFD_ASSERT (h->dynindx != -1 | |
4277 | && (h->root.type == bfd_link_hash_defined | |
4278 | || h->root.type == bfd_link_hash_defweak)); | |
4279 | ||
4280 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4281 | ".rela.bss"); | |
4282 | BFD_ASSERT (s != NULL); | |
4283 | ||
4284 | rel.r_offset = (h->root.u.def.value | |
4285 | + h->root.u.def.section->output_section->vma | |
4286 | + h->root.u.def.section->output_offset); | |
4287 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY); | |
4288 | rel.r_addend = 0; | |
4289 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
435b1e90 KH |
4290 | ((Elf32_External_Rela *) s->contents |
4291 | + s->reloc_count)); | |
37c644f2 AO |
4292 | ++s->reloc_count; |
4293 | } | |
4294 | ||
4295 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
4296 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4297 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
4298 | sym->st_shndx = SHN_ABS; | |
4299 | ||
4300 | return true; | |
4301 | } | |
4302 | ||
4303 | /* Finish up the dynamic sections. */ | |
4304 | ||
4305 | static boolean | |
4306 | sh_elf_finish_dynamic_sections (output_bfd, info) | |
4307 | bfd *output_bfd; | |
4308 | struct bfd_link_info *info; | |
4309 | { | |
4310 | bfd *dynobj; | |
4311 | asection *sgot; | |
4312 | asection *sdyn; | |
4313 | ||
4314 | dynobj = elf_hash_table (info)->dynobj; | |
4315 | ||
4316 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4317 | BFD_ASSERT (sgot != NULL); | |
4318 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4319 | ||
4320 | if (elf_hash_table (info)->dynamic_sections_created) | |
4321 | { | |
4322 | asection *splt; | |
4323 | Elf32_External_Dyn *dyncon, *dynconend; | |
4324 | ||
4325 | BFD_ASSERT (sdyn != NULL); | |
4326 | ||
4327 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4328 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
4329 | for (; dyncon < dynconend; dyncon++) | |
4330 | { | |
4331 | Elf_Internal_Dyn dyn; | |
4332 | const char *name; | |
4333 | asection *s; | |
4334 | ||
4335 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4336 | ||
4337 | switch (dyn.d_tag) | |
4338 | { | |
4339 | default: | |
4340 | break; | |
4341 | ||
4342 | case DT_PLTGOT: | |
4343 | name = ".got"; | |
4344 | goto get_vma; | |
4345 | ||
4346 | case DT_JMPREL: | |
4347 | name = ".rela.plt"; | |
4348 | get_vma: | |
4349 | s = bfd_get_section_by_name (output_bfd, name); | |
4350 | BFD_ASSERT (s != NULL); | |
4351 | dyn.d_un.d_ptr = s->vma; | |
4352 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4353 | break; | |
4354 | ||
4355 | case DT_PLTRELSZ: | |
4356 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4357 | BFD_ASSERT (s != NULL); | |
4358 | if (s->_cooked_size != 0) | |
4359 | dyn.d_un.d_val = s->_cooked_size; | |
4360 | else | |
4361 | dyn.d_un.d_val = s->_raw_size; | |
4362 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4363 | break; | |
4364 | ||
4365 | case DT_RELASZ: | |
4366 | /* My reading of the SVR4 ABI indicates that the | |
4367 | procedure linkage table relocs (DT_JMPREL) should be | |
4368 | included in the overall relocs (DT_RELA). This is | |
4369 | what Solaris does. However, UnixWare can not handle | |
4370 | that case. Therefore, we override the DT_RELASZ entry | |
4371 | here to make it not include the JMPREL relocs. Since | |
4372 | the linker script arranges for .rela.plt to follow all | |
4373 | other relocation sections, we don't have to worry | |
4374 | about changing the DT_RELA entry. */ | |
4375 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4376 | if (s != NULL) | |
4377 | { | |
4378 | if (s->_cooked_size != 0) | |
4379 | dyn.d_un.d_val -= s->_cooked_size; | |
4380 | else | |
4381 | dyn.d_un.d_val -= s->_raw_size; | |
4382 | } | |
4383 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4384 | break; | |
4385 | } | |
4386 | } | |
4387 | ||
4388 | /* Fill in the first entry in the procedure linkage table. */ | |
4389 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4390 | if (splt && splt->_raw_size > 0) | |
4391 | { | |
4392 | if (info->shared) | |
4393 | { | |
4394 | if (elf_sh_pic_plt_entry == NULL) | |
4395 | { | |
435b1e90 | 4396 | elf_sh_pic_plt_entry = (bfd_big_endian (output_bfd) ? |
37c644f2 AO |
4397 | elf_sh_pic_plt_entry_be : |
4398 | elf_sh_pic_plt_entry_le); | |
4399 | } | |
4400 | memcpy (splt->contents, elf_sh_pic_plt_entry, | |
4401 | elf_sh_sizeof_plt (info)); | |
4402 | } | |
4403 | else | |
4404 | { | |
4405 | if (elf_sh_plt0_entry == NULL) | |
4406 | { | |
435b1e90 | 4407 | elf_sh_plt0_entry = (bfd_big_endian (output_bfd) ? |
37c644f2 AO |
4408 | elf_sh_plt0_entry_be : |
4409 | elf_sh_plt0_entry_le); | |
4410 | } | |
4411 | memcpy (splt->contents, elf_sh_plt0_entry, PLT_ENTRY_SIZE); | |
4412 | bfd_put_32 (output_bfd, | |
4413 | sgot->output_section->vma + sgot->output_offset + 4, | |
4414 | splt->contents + elf_sh_plt0_gotid_offset (info)); | |
4415 | bfd_put_32 (output_bfd, | |
4416 | sgot->output_section->vma + sgot->output_offset + 8, | |
4417 | splt->contents + elf_sh_plt0_linker_offset (info)); | |
4418 | } | |
4419 | ||
4420 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4421 | really seem like the right value. */ | |
4422 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4423 | } | |
4424 | } | |
4425 | ||
4426 | /* Fill in the first three entries in the global offset table. */ | |
4427 | if (sgot->_raw_size > 0) | |
4428 | { | |
4429 | if (sdyn == NULL) | |
4430 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4431 | else | |
4432 | bfd_put_32 (output_bfd, | |
4433 | sdyn->output_section->vma + sdyn->output_offset, | |
4434 | sgot->contents); | |
4435 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4436 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4437 | } | |
4438 | ||
4439 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4440 | ||
4441 | return true; | |
4442 | } | |
4443 | ||
b129bfef | 4444 | #ifndef ELF_ARCH |
252b5132 RH |
4445 | #define TARGET_BIG_SYM bfd_elf32_sh_vec |
4446 | #define TARGET_BIG_NAME "elf32-sh" | |
4447 | #define TARGET_LITTLE_SYM bfd_elf32_shl_vec | |
4448 | #define TARGET_LITTLE_NAME "elf32-shl" | |
4449 | #define ELF_ARCH bfd_arch_sh | |
4450 | #define ELF_MACHINE_CODE EM_SH | |
4bb5e078 | 4451 | #define ELF_MAXPAGESIZE 128 |
252b5132 RH |
4452 | |
4453 | #define elf_symbol_leading_char '_' | |
b129bfef | 4454 | #endif /* ELF_ARCH */ |
252b5132 RH |
4455 | |
4456 | #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup | |
4457 | #define elf_info_to_howto sh_elf_info_to_howto | |
4458 | #define bfd_elf32_bfd_relax_section sh_elf_relax_section | |
4459 | #define elf_backend_relocate_section sh_elf_relocate_section | |
4460 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4461 | sh_elf_get_relocated_section_contents | |
d4845d57 JR |
4462 | #define elf_backend_object_p sh_elf_set_mach_from_flags |
4463 | #define bfd_elf32_bfd_set_private_bfd_flags \ | |
4464 | sh_elf_set_private_flags | |
4465 | #define bfd_elf32_bfd_copy_private_bfd_data \ | |
4466 | sh_elf_copy_private_data | |
875f7f69 | 4467 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
d4845d57 | 4468 | sh_elf_merge_private_data |
252b5132 RH |
4469 | |
4470 | #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook | |
4471 | #define elf_backend_gc_sweep_hook sh_elf_gc_sweep_hook | |
4472 | #define elf_backend_check_relocs sh_elf_check_relocs | |
4473 | ||
37c644f2 AO |
4474 | #define elf_backend_can_gc_sections 1 |
4475 | #define elf_backend_create_dynamic_sections \ | |
4476 | sh_elf_create_dynamic_sections | |
4477 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4478 | sh_elf_link_hash_table_create | |
4479 | #define elf_backend_adjust_dynamic_symbol \ | |
4480 | sh_elf_adjust_dynamic_symbol | |
4481 | #define elf_backend_size_dynamic_sections \ | |
4482 | sh_elf_size_dynamic_sections | |
4483 | #define elf_backend_finish_dynamic_symbol \ | |
4484 | sh_elf_finish_dynamic_symbol | |
4485 | #define elf_backend_finish_dynamic_sections \ | |
4486 | sh_elf_finish_dynamic_sections | |
4487 | ||
4488 | #define elf_backend_want_got_plt 1 | |
4489 | #define elf_backend_plt_readonly 1 | |
4490 | #define elf_backend_want_plt_sym 0 | |
4491 | #define elf_backend_got_header_size 12 | |
4492 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
252b5132 | 4493 | #include "elf32-target.h" |