Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* FR30-specific support for 32-bit ELF. |
dbaa2011 AM |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
3 | 2010, 2012 | |
1049f94e | 4 | Free Software Foundation, Inc. |
252b5132 | 5 | |
cd123cb7 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
cd123cb7 NC |
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 3 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
cd123cb7 NC |
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. | |
252b5132 | 17 | |
cd123cb7 NC |
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., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
27 | #include "elf/fr30.h" | |
28 | ||
29 | /* Forward declarations. */ | |
30 | static bfd_reloc_status_type fr30_elf_i20_reloc | |
31 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
32 | static bfd_reloc_status_type fr30_elf_i32_reloc | |
33 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
34 | static reloc_howto_type * fr30_reloc_type_lookup | |
35 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
6609fa74 | 36 | static void fr30_info_to_howto_rela |
947216bf | 37 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 | 38 | static bfd_boolean fr30_elf_relocate_section |
dc810e39 AM |
39 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
40 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
252b5132 | 41 | static bfd_reloc_status_type fr30_final_link_relocate |
dc810e39 AM |
42 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, |
43 | Elf_Internal_Rela *, bfd_vma)); | |
b34976b6 | 44 | static bfd_boolean fr30_elf_check_relocs |
dc810e39 AM |
45 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
46 | const Elf_Internal_Rela *)); | |
252b5132 RH |
47 | |
48 | static reloc_howto_type fr30_elf_howto_table [] = | |
49 | { | |
50 | /* This reloc does nothing. */ | |
51 | HOWTO (R_FR30_NONE, /* type */ | |
52 | 0, /* rightshift */ | |
53 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
54 | 32, /* bitsize */ | |
b34976b6 | 55 | FALSE, /* pc_relative */ |
252b5132 RH |
56 | 0, /* bitpos */ |
57 | complain_overflow_bitfield, /* complain_on_overflow */ | |
58 | bfd_elf_generic_reloc, /* special_function */ | |
59 | "R_FR30_NONE", /* name */ | |
b34976b6 | 60 | FALSE, /* partial_inplace */ |
252b5132 RH |
61 | 0, /* src_mask */ |
62 | 0, /* dst_mask */ | |
b34976b6 | 63 | FALSE), /* pcrel_offset */ |
252b5132 RH |
64 | |
65 | /* An 8 bit absolute relocation. */ | |
66 | HOWTO (R_FR30_8, /* type */ | |
67 | 0, /* rightshift */ | |
68 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
69 | 8, /* bitsize */ | |
b34976b6 | 70 | FALSE, /* pc_relative */ |
252b5132 RH |
71 | 4, /* bitpos */ |
72 | complain_overflow_bitfield, /* complain_on_overflow */ | |
73 | bfd_elf_generic_reloc, /* special_function */ | |
74 | "R_FR30_8", /* name */ | |
d2e2e649 | 75 | FALSE, /* partial_inplace */ |
252b5132 RH |
76 | 0x0000, /* src_mask */ |
77 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 78 | FALSE), /* pcrel_offset */ |
252b5132 RH |
79 | |
80 | /* A 20 bit absolute relocation. */ | |
81 | HOWTO (R_FR30_20, /* type */ | |
82 | 0, /* rightshift */ | |
83 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
84 | 20, /* bitsize */ | |
b34976b6 | 85 | FALSE, /* pc_relative */ |
252b5132 RH |
86 | 0, /* bitpos */ |
87 | complain_overflow_bitfield, /* complain_on_overflow */ | |
88 | fr30_elf_i20_reloc, /* special_function */ | |
89 | "R_FR30_20", /* name */ | |
d2e2e649 | 90 | FALSE, /* partial_inplace */ |
252b5132 RH |
91 | 0x00000000, /* src_mask */ |
92 | 0x00f0ffff, /* dst_mask */ | |
b34976b6 | 93 | FALSE), /* pcrel_offset */ |
252b5132 RH |
94 | |
95 | /* A 32 bit absolute relocation. */ | |
96 | HOWTO (R_FR30_32, /* type */ | |
97 | 0, /* rightshift */ | |
98 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
99 | 32, /* bitsize */ | |
b34976b6 | 100 | FALSE, /* pc_relative */ |
252b5132 RH |
101 | 0, /* bitpos */ |
102 | complain_overflow_bitfield, /* complain_on_overflow */ | |
103 | bfd_elf_generic_reloc, /* special_function */ | |
104 | "R_FR30_32", /* name */ | |
d2e2e649 | 105 | FALSE, /* partial_inplace */ |
252b5132 RH |
106 | 0x00000000, /* src_mask */ |
107 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 108 | FALSE), /* pcrel_offset */ |
252b5132 RH |
109 | |
110 | /* A 32 bit into 48 bits absolute relocation. */ | |
111 | HOWTO (R_FR30_48, /* type */ | |
112 | 0, /* rightshift */ | |
113 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
114 | 32, /* bitsize */ | |
b34976b6 | 115 | FALSE, /* pc_relative */ |
252b5132 RH |
116 | 0, /* bitpos */ |
117 | complain_overflow_bitfield, /* complain_on_overflow */ | |
118 | fr30_elf_i32_reloc, /* special_function */ | |
119 | "R_FR30_48", /* name */ | |
d2e2e649 | 120 | FALSE, /* partial_inplace */ |
252b5132 RH |
121 | 0x00000000, /* src_mask */ |
122 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 123 | FALSE), /* pcrel_offset */ |
252b5132 RH |
124 | |
125 | /* A 6 bit absolute relocation. */ | |
126 | HOWTO (R_FR30_6_IN_4, /* type */ | |
127 | 2, /* rightshift */ | |
128 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
129 | 6, /* bitsize */ | |
b34976b6 | 130 | FALSE, /* pc_relative */ |
252b5132 RH |
131 | 4, /* bitpos */ |
132 | complain_overflow_unsigned, /* complain_on_overflow */ | |
133 | bfd_elf_generic_reloc, /* special_function */ | |
134 | "R_FR30_6_IN_4", /* name */ | |
d2e2e649 | 135 | FALSE, /* partial_inplace */ |
252b5132 RH |
136 | 0x0000, /* src_mask */ |
137 | 0x00f0, /* dst_mask */ | |
b34976b6 | 138 | FALSE), /* pcrel_offset */ |
6609fa74 | 139 | |
252b5132 RH |
140 | /* An 8 bit absolute relocation. */ |
141 | HOWTO (R_FR30_8_IN_8, /* type */ | |
142 | 0, /* rightshift */ | |
143 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
144 | 8, /* bitsize */ | |
b34976b6 | 145 | FALSE, /* pc_relative */ |
252b5132 RH |
146 | 4, /* bitpos */ |
147 | complain_overflow_signed, /* complain_on_overflow */ | |
148 | bfd_elf_generic_reloc,/* special_function */ | |
149 | "R_FR30_8_IN_8", /* name */ | |
d2e2e649 | 150 | FALSE, /* partial_inplace */ |
252b5132 RH |
151 | 0x0000, /* src_mask */ |
152 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 153 | FALSE), /* pcrel_offset */ |
6609fa74 | 154 | |
252b5132 RH |
155 | /* A 9 bit absolute relocation. */ |
156 | HOWTO (R_FR30_9_IN_8, /* type */ | |
157 | 1, /* rightshift */ | |
158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
159 | 9, /* bitsize */ | |
b34976b6 | 160 | FALSE, /* pc_relative */ |
252b5132 RH |
161 | 4, /* bitpos */ |
162 | complain_overflow_signed, /* complain_on_overflow */ | |
163 | bfd_elf_generic_reloc,/* special_function */ | |
164 | "R_FR30_9_IN_8", /* name */ | |
d2e2e649 | 165 | FALSE, /* partial_inplace */ |
252b5132 RH |
166 | 0x0000, /* src_mask */ |
167 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 168 | FALSE), /* pcrel_offset */ |
6609fa74 | 169 | |
252b5132 RH |
170 | /* A 10 bit absolute relocation. */ |
171 | HOWTO (R_FR30_10_IN_8, /* type */ | |
172 | 2, /* rightshift */ | |
173 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
174 | 10, /* bitsize */ | |
b34976b6 | 175 | FALSE, /* pc_relative */ |
252b5132 RH |
176 | 4, /* bitpos */ |
177 | complain_overflow_signed, /* complain_on_overflow */ | |
178 | bfd_elf_generic_reloc,/* special_function */ | |
179 | "R_FR30_10_IN_8", /* name */ | |
d2e2e649 | 180 | FALSE, /* partial_inplace */ |
252b5132 RH |
181 | 0x0000, /* src_mask */ |
182 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 183 | FALSE), /* pcrel_offset */ |
252b5132 RH |
184 | |
185 | /* A PC relative 9 bit relocation, right shifted by 1. */ | |
186 | HOWTO (R_FR30_9_PCREL, /* type */ | |
187 | 1, /* rightshift */ | |
188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
189 | 9, /* bitsize */ | |
b34976b6 | 190 | TRUE, /* pc_relative */ |
252b5132 RH |
191 | 0, /* bitpos */ |
192 | complain_overflow_signed, /* complain_on_overflow */ | |
193 | bfd_elf_generic_reloc, /* special_function */ | |
194 | "R_FR30_9_PCREL", /* name */ | |
b34976b6 | 195 | FALSE, /* partial_inplace */ |
252b5132 RH |
196 | 0x0000, /* src_mask */ |
197 | 0x00ff, /* dst_mask */ | |
b34976b6 | 198 | FALSE), /* pcrel_offset */ |
252b5132 RH |
199 | |
200 | /* A PC relative 12 bit relocation, right shifted by 1. */ | |
201 | HOWTO (R_FR30_12_PCREL, /* type */ | |
202 | 1, /* rightshift */ | |
203 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
204 | 12, /* bitsize */ | |
b34976b6 | 205 | TRUE, /* pc_relative */ |
252b5132 RH |
206 | 0, /* bitpos */ |
207 | complain_overflow_signed, /* complain_on_overflow */ | |
208 | bfd_elf_generic_reloc, /* special_function */ | |
209 | "R_FR30_12_PCREL", /* name */ | |
b34976b6 | 210 | FALSE, /* partial_inplace */ |
252b5132 RH |
211 | 0x0000, /* src_mask */ |
212 | 0x07ff, /* dst_mask */ | |
b34976b6 | 213 | FALSE), /* pcrel_offset */ |
252b5132 RH |
214 | /* GNU extension to record C++ vtable hierarchy */ |
215 | HOWTO (R_FR30_GNU_VTINHERIT, /* type */ | |
216 | 0, /* rightshift */ | |
217 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
218 | 0, /* bitsize */ | |
b34976b6 | 219 | FALSE, /* pc_relative */ |
252b5132 RH |
220 | 0, /* bitpos */ |
221 | complain_overflow_dont, /* complain_on_overflow */ | |
222 | NULL, /* special_function */ | |
223 | "R_FR30_GNU_VTINHERIT", /* name */ | |
b34976b6 | 224 | FALSE, /* partial_inplace */ |
252b5132 RH |
225 | 0, /* src_mask */ |
226 | 0, /* dst_mask */ | |
b34976b6 | 227 | FALSE), /* pcrel_offset */ |
252b5132 RH |
228 | |
229 | /* GNU extension to record C++ vtable member usage */ | |
230 | HOWTO (R_FR30_GNU_VTENTRY, /* type */ | |
231 | 0, /* rightshift */ | |
232 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
233 | 0, /* bitsize */ | |
b34976b6 | 234 | FALSE, /* pc_relative */ |
252b5132 RH |
235 | 0, /* bitpos */ |
236 | complain_overflow_dont, /* complain_on_overflow */ | |
237 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
238 | "R_FR30_GNU_VTENTRY", /* name */ | |
b34976b6 | 239 | FALSE, /* partial_inplace */ |
252b5132 RH |
240 | 0, /* src_mask */ |
241 | 0, /* dst_mask */ | |
b34976b6 | 242 | FALSE), /* pcrel_offset */ |
252b5132 RH |
243 | }; |
244 | \f | |
245 | /* Utility to actually perform an R_FR30_20 reloc. */ | |
246 | ||
247 | static bfd_reloc_status_type | |
248 | fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data, | |
249 | input_section, output_bfd, error_message) | |
b34976b6 AM |
250 | bfd *abfd; |
251 | arelent *reloc_entry; | |
252 | asymbol *symbol; | |
253 | PTR data; | |
254 | asection *input_section; | |
255 | bfd *output_bfd; | |
256 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 | 257 | { |
b34976b6 | 258 | bfd_vma relocation; |
252b5132 | 259 | unsigned long x; |
6609fa74 | 260 | |
252b5132 RH |
261 | /* This part is from bfd_elf_generic_reloc. */ |
262 | if (output_bfd != (bfd *) NULL | |
263 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
264 | && (! reloc_entry->howto->partial_inplace | |
265 | || reloc_entry->addend == 0)) | |
266 | { | |
267 | reloc_entry->address += input_section->output_offset; | |
268 | return bfd_reloc_ok; | |
269 | } | |
270 | ||
271 | if (output_bfd != NULL) | |
272 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
273 | return bfd_reloc_ok; | |
274 | ||
275 | relocation = | |
276 | symbol->value | |
277 | + symbol->section->output_section->vma | |
278 | + symbol->section->output_offset | |
279 | + reloc_entry->addend; | |
280 | ||
fc633e5b | 281 | if (relocation > (((bfd_vma) 1 << 20) - 1)) |
252b5132 RH |
282 | return bfd_reloc_overflow; |
283 | ||
23ccc829 | 284 | x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); |
252b5132 | 285 | x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); |
dc810e39 | 286 | bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address); |
252b5132 RH |
287 | |
288 | return bfd_reloc_ok; | |
289 | } | |
252b5132 RH |
290 | \f |
291 | /* Utility to actually perform a R_FR30_48 reloc. */ | |
292 | ||
293 | static bfd_reloc_status_type | |
294 | fr30_elf_i32_reloc (abfd, reloc_entry, symbol, data, | |
295 | input_section, output_bfd, error_message) | |
b34976b6 AM |
296 | bfd *abfd; |
297 | arelent *reloc_entry; | |
298 | asymbol *symbol; | |
299 | PTR data; | |
300 | asection *input_section; | |
301 | bfd *output_bfd; | |
302 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 | 303 | { |
b34976b6 | 304 | bfd_vma relocation; |
252b5132 RH |
305 | |
306 | /* This part is from bfd_elf_generic_reloc. */ | |
307 | if (output_bfd != (bfd *) NULL | |
308 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
309 | && (! reloc_entry->howto->partial_inplace | |
310 | || reloc_entry->addend == 0)) | |
311 | { | |
312 | reloc_entry->address += input_section->output_offset; | |
313 | return bfd_reloc_ok; | |
314 | } | |
315 | ||
316 | if (output_bfd != NULL) | |
317 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
318 | return bfd_reloc_ok; | |
319 | ||
320 | relocation = | |
321 | symbol->value | |
322 | + symbol->section->output_section->vma | |
323 | + symbol->section->output_offset | |
324 | + reloc_entry->addend; | |
325 | ||
23ccc829 | 326 | bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2); |
252b5132 RH |
327 | |
328 | return bfd_reloc_ok; | |
329 | } | |
330 | \f | |
331 | /* Map BFD reloc types to FR30 ELF reloc types. */ | |
332 | ||
333 | struct fr30_reloc_map | |
334 | { | |
335 | bfd_reloc_code_real_type bfd_reloc_val; | |
336 | unsigned int fr30_reloc_val; | |
337 | }; | |
338 | ||
339 | static const struct fr30_reloc_map fr30_reloc_map [] = | |
340 | { | |
341 | { BFD_RELOC_NONE, R_FR30_NONE }, | |
342 | { BFD_RELOC_8, R_FR30_8 }, | |
343 | { BFD_RELOC_FR30_20, R_FR30_20 }, | |
344 | { BFD_RELOC_32, R_FR30_32 }, | |
345 | { BFD_RELOC_FR30_48, R_FR30_48 }, | |
346 | { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 }, | |
347 | { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 }, | |
348 | { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 }, | |
349 | { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 }, | |
350 | { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL }, | |
351 | { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL }, | |
352 | { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT }, | |
353 | { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY }, | |
354 | }; | |
355 | ||
356 | static reloc_howto_type * | |
357 | fr30_reloc_type_lookup (abfd, code) | |
b34976b6 | 358 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
359 | bfd_reloc_code_real_type code; |
360 | { | |
361 | unsigned int i; | |
362 | ||
363 | for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]); | |
364 | --i;) | |
365 | if (fr30_reloc_map [i].bfd_reloc_val == code) | |
366 | return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val]; | |
6609fa74 | 367 | |
252b5132 RH |
368 | return NULL; |
369 | } | |
370 | ||
157090f7 AM |
371 | static reloc_howto_type * |
372 | fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
373 | { | |
374 | unsigned int i; | |
375 | ||
376 | for (i = 0; | |
377 | i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]); | |
378 | i++) | |
379 | if (fr30_elf_howto_table[i].name != NULL | |
380 | && strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0) | |
381 | return &fr30_elf_howto_table[i]; | |
382 | ||
383 | return NULL; | |
384 | } | |
385 | ||
252b5132 RH |
386 | /* Set the howto pointer for an FR30 ELF reloc. */ |
387 | ||
388 | static void | |
389 | fr30_info_to_howto_rela (abfd, cache_ptr, dst) | |
b34976b6 AM |
390 | bfd *abfd ATTRIBUTE_UNUSED; |
391 | arelent *cache_ptr; | |
392 | Elf_Internal_Rela *dst; | |
252b5132 RH |
393 | { |
394 | unsigned int r_type; | |
395 | ||
396 | r_type = ELF32_R_TYPE (dst->r_info); | |
397 | BFD_ASSERT (r_type < (unsigned int) R_FR30_max); | |
398 | cache_ptr->howto = & fr30_elf_howto_table [r_type]; | |
399 | } | |
400 | \f | |
401 | /* Perform a single relocation. By default we use the standard BFD | |
402 | routines, but a few relocs, we have to do them ourselves. */ | |
403 | ||
404 | static bfd_reloc_status_type | |
b34976b6 AM |
405 | fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel, |
406 | relocation) | |
407 | reloc_howto_type *howto; | |
408 | bfd *input_bfd; | |
409 | asection *input_section; | |
410 | bfd_byte *contents; | |
411 | Elf_Internal_Rela *rel; | |
412 | bfd_vma relocation; | |
252b5132 RH |
413 | { |
414 | bfd_reloc_status_type r = bfd_reloc_ok; | |
b34976b6 AM |
415 | bfd_vma x; |
416 | bfd_signed_vma srel; | |
6609fa74 | 417 | |
252b5132 RH |
418 | switch (howto->type) |
419 | { | |
420 | case R_FR30_20: | |
421 | contents += rel->r_offset; | |
422 | relocation += rel->r_addend; | |
423 | ||
424 | if (relocation > ((1 << 20) - 1)) | |
425 | return bfd_reloc_overflow; | |
6609fa74 | 426 | |
252b5132 RH |
427 | x = bfd_get_32 (input_bfd, contents); |
428 | x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); | |
429 | bfd_put_32 (input_bfd, x, contents); | |
430 | break; | |
6609fa74 | 431 | |
252b5132 RH |
432 | case R_FR30_48: |
433 | contents += rel->r_offset + 2; | |
434 | relocation += rel->r_addend; | |
435 | bfd_put_32 (input_bfd, relocation, contents); | |
436 | break; | |
437 | ||
438 | case R_FR30_9_PCREL: | |
439 | contents += rel->r_offset + 1; | |
440 | srel = (bfd_signed_vma) relocation; | |
441 | srel += rel->r_addend; | |
442 | srel -= rel->r_offset; | |
6609fa74 | 443 | srel -= 2; /* Branch instructions add 2 to the PC... */ |
252b5132 RH |
444 | srel -= (input_section->output_section->vma + |
445 | input_section->output_offset); | |
6609fa74 | 446 | |
252b5132 RH |
447 | if (srel & 1) |
448 | return bfd_reloc_outofrange; | |
449 | if (srel > ((1 << 8) - 1) || (srel < - (1 << 8))) | |
450 | return bfd_reloc_overflow; | |
451 | ||
452 | bfd_put_8 (input_bfd, srel >> 1, contents); | |
453 | break; | |
454 | ||
455 | case R_FR30_12_PCREL: | |
456 | contents += rel->r_offset; | |
457 | srel = (bfd_signed_vma) relocation; | |
458 | srel += rel->r_addend; | |
459 | srel -= rel->r_offset; | |
6609fa74 | 460 | srel -= 2; /* Branch instructions add 2 to the PC... */ |
252b5132 RH |
461 | srel -= (input_section->output_section->vma + |
462 | input_section->output_offset); | |
6609fa74 | 463 | |
252b5132 RH |
464 | if (srel & 1) |
465 | return bfd_reloc_outofrange; | |
466 | if (srel > ((1 << 11) - 1) || (srel < - (1 << 11))) | |
467 | return bfd_reloc_overflow; | |
6609fa74 | 468 | |
252b5132 RH |
469 | x = bfd_get_16 (input_bfd, contents); |
470 | x = (x & 0xf800) | ((srel >> 1) & 0x7ff); | |
471 | bfd_put_16 (input_bfd, x, contents); | |
472 | break; | |
473 | ||
474 | default: | |
475 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
476 | contents, rel->r_offset, | |
477 | relocation, rel->r_addend); | |
478 | } | |
479 | ||
480 | return r; | |
481 | } | |
252b5132 RH |
482 | \f |
483 | /* Relocate an FR30 ELF section. | |
252b5132 RH |
484 | |
485 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
486 | to handle the relocations for a section. | |
487 | ||
488 | The relocs are always passed as Rela structures; if the section | |
489 | actually uses Rel structures, the r_addend field will always be | |
490 | zero. | |
491 | ||
492 | This function is responsible for adjusting the section contents as | |
1049f94e | 493 | necessary, and (if using Rela relocs and generating a relocatable |
252b5132 RH |
494 | output file) adjusting the reloc addend as necessary. |
495 | ||
496 | This function does not have to worry about setting the reloc | |
497 | address or the reloc symbol index. | |
498 | ||
499 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
500 | ||
501 | LOCAL_SECTIONS is an array giving the section in the input file | |
502 | corresponding to the st_shndx field of each local symbol. | |
503 | ||
504 | The global hash table entry for the global symbols can be found | |
505 | via elf_sym_hashes (input_bfd). | |
506 | ||
1049f94e | 507 | When generating relocatable output, this function must handle |
252b5132 RH |
508 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
509 | going to be the section symbol corresponding to the output | |
510 | section, which means that the addend must be adjusted | |
511 | accordingly. */ | |
512 | ||
b34976b6 | 513 | static bfd_boolean |
252b5132 RH |
514 | fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
515 | contents, relocs, local_syms, local_sections) | |
b34976b6 AM |
516 | bfd *output_bfd; |
517 | struct bfd_link_info *info; | |
518 | bfd *input_bfd; | |
519 | asection *input_section; | |
520 | bfd_byte *contents; | |
521 | Elf_Internal_Rela *relocs; | |
522 | Elf_Internal_Sym *local_syms; | |
523 | asection **local_sections; | |
252b5132 | 524 | { |
b34976b6 AM |
525 | Elf_Internal_Shdr *symtab_hdr; |
526 | struct elf_link_hash_entry **sym_hashes; | |
527 | Elf_Internal_Rela *rel; | |
528 | Elf_Internal_Rela *relend; | |
252b5132 RH |
529 | |
530 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
531 | sym_hashes = elf_sym_hashes (input_bfd); | |
532 | relend = relocs + input_section->reloc_count; | |
533 | ||
534 | for (rel = relocs; rel < relend; rel ++) | |
535 | { | |
b34976b6 AM |
536 | reloc_howto_type *howto; |
537 | unsigned long r_symndx; | |
538 | Elf_Internal_Sym *sym; | |
539 | asection *sec; | |
540 | struct elf_link_hash_entry *h; | |
541 | bfd_vma relocation; | |
542 | bfd_reloc_status_type r; | |
dfeffb9f | 543 | const char *name; |
b34976b6 | 544 | int r_type; |
6609fa74 | 545 | |
252b5132 | 546 | r_type = ELF32_R_TYPE (rel->r_info); |
6609fa74 | 547 | |
252b5132 RH |
548 | if ( r_type == R_FR30_GNU_VTINHERIT |
549 | || r_type == R_FR30_GNU_VTENTRY) | |
550 | continue; | |
6609fa74 | 551 | |
252b5132 RH |
552 | r_symndx = ELF32_R_SYM (rel->r_info); |
553 | ||
252b5132 RH |
554 | howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
555 | h = NULL; | |
556 | sym = NULL; | |
557 | sec = NULL; | |
6609fa74 | 558 | |
252b5132 RH |
559 | if (r_symndx < symtab_hdr->sh_info) |
560 | { | |
561 | sym = local_syms + r_symndx; | |
562 | sec = local_sections [r_symndx]; | |
8517fae7 | 563 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
6609fa74 | 564 | |
252b5132 RH |
565 | name = bfd_elf_string_from_elf_section |
566 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
567 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
252b5132 RH |
568 | } |
569 | else | |
570 | { | |
59c2e50f | 571 | bfd_boolean unresolved_reloc, warned; |
6609fa74 | 572 | |
b2a8e766 AM |
573 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
574 | r_symndx, symtab_hdr, sym_hashes, | |
575 | h, sec, relocation, | |
576 | unresolved_reloc, warned); | |
dfeffb9f L |
577 | |
578 | name = h->root.root.string; | |
252b5132 | 579 | } |
6609fa74 | 580 | |
dbaa2011 | 581 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 582 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 583 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
584 | |
585 | if (info->relocatable) | |
586 | continue; | |
587 | ||
252b5132 RH |
588 | r = fr30_final_link_relocate (howto, input_bfd, input_section, |
589 | contents, rel, relocation); | |
590 | ||
591 | if (r != bfd_reloc_ok) | |
592 | { | |
593 | const char * msg = (const char *) NULL; | |
594 | ||
595 | switch (r) | |
596 | { | |
597 | case bfd_reloc_overflow: | |
598 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
599 | (info, (h ? &h->root : NULL), name, howto->name, |
600 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
252b5132 | 601 | break; |
6609fa74 | 602 | |
252b5132 RH |
603 | case bfd_reloc_undefined: |
604 | r = info->callbacks->undefined_symbol | |
5cc7c785 | 605 | (info, name, input_bfd, input_section, rel->r_offset, |
b34976b6 | 606 | TRUE); |
252b5132 | 607 | break; |
6609fa74 | 608 | |
252b5132 RH |
609 | case bfd_reloc_outofrange: |
610 | msg = _("internal error: out of range error"); | |
611 | break; | |
612 | ||
613 | case bfd_reloc_notsupported: | |
614 | msg = _("internal error: unsupported relocation error"); | |
615 | break; | |
616 | ||
617 | case bfd_reloc_dangerous: | |
618 | msg = _("internal error: dangerous relocation"); | |
619 | break; | |
620 | ||
621 | default: | |
622 | msg = _("internal error: unknown error"); | |
623 | break; | |
624 | } | |
625 | ||
626 | if (msg) | |
627 | r = info->callbacks->warning | |
628 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
629 | ||
630 | if (! r) | |
b34976b6 | 631 | return FALSE; |
252b5132 RH |
632 | } |
633 | } | |
634 | ||
b34976b6 | 635 | return TRUE; |
252b5132 RH |
636 | } |
637 | \f | |
638 | /* Return the section that should be marked against GC for a given | |
639 | relocation. */ | |
640 | ||
641 | static asection * | |
07adf181 AM |
642 | fr30_elf_gc_mark_hook (asection *sec, |
643 | struct bfd_link_info *info, | |
644 | Elf_Internal_Rela *rel, | |
645 | struct elf_link_hash_entry *h, | |
646 | Elf_Internal_Sym *sym) | |
252b5132 RH |
647 | { |
648 | if (h != NULL) | |
07adf181 AM |
649 | switch (ELF32_R_TYPE (rel->r_info)) |
650 | { | |
651 | case R_FR30_GNU_VTINHERIT: | |
652 | case R_FR30_GNU_VTENTRY: | |
653 | return NULL; | |
654 | } | |
655 | ||
656 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
657 | } |
658 | ||
659 | /* Look through the relocs for a section during the first phase. | |
660 | Since we don't do .gots or .plts, we just need to consider the | |
661 | virtual table relocs for gc. */ | |
6609fa74 | 662 | |
b34976b6 | 663 | static bfd_boolean |
252b5132 RH |
664 | fr30_elf_check_relocs (abfd, info, sec, relocs) |
665 | bfd *abfd; | |
666 | struct bfd_link_info *info; | |
667 | asection *sec; | |
668 | const Elf_Internal_Rela *relocs; | |
669 | { | |
670 | Elf_Internal_Shdr *symtab_hdr; | |
5582a088 | 671 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
672 | const Elf_Internal_Rela *rel; |
673 | const Elf_Internal_Rela *rel_end; | |
6609fa74 | 674 | |
1049f94e | 675 | if (info->relocatable) |
b34976b6 | 676 | return TRUE; |
6609fa74 | 677 | |
252b5132 RH |
678 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
679 | sym_hashes = elf_sym_hashes (abfd); | |
6609fa74 | 680 | |
252b5132 RH |
681 | rel_end = relocs + sec->reloc_count; |
682 | for (rel = relocs; rel < rel_end; rel++) | |
683 | { | |
684 | struct elf_link_hash_entry *h; | |
685 | unsigned long r_symndx; | |
6609fa74 | 686 | |
252b5132 RH |
687 | r_symndx = ELF32_R_SYM (rel->r_info); |
688 | if (r_symndx < symtab_hdr->sh_info) | |
689 | h = NULL; | |
690 | else | |
973a3492 L |
691 | { |
692 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
693 | while (h->root.type == bfd_link_hash_indirect | |
694 | || h->root.type == bfd_link_hash_warning) | |
695 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
696 | } | |
6609fa74 | 697 | |
252b5132 RH |
698 | switch (ELF32_R_TYPE (rel->r_info)) |
699 | { | |
700 | /* This relocation describes the C++ object vtable hierarchy. | |
701 | Reconstruct it for later use during GC. */ | |
702 | case R_FR30_GNU_VTINHERIT: | |
c152c796 | 703 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 704 | return FALSE; |
252b5132 | 705 | break; |
6609fa74 | 706 | |
252b5132 RH |
707 | /* This relocation describes which C++ vtable entries are actually |
708 | used. Record for later use during GC. */ | |
709 | case R_FR30_GNU_VTENTRY: | |
d17e0c6e JB |
710 | BFD_ASSERT (h != NULL); |
711 | if (h != NULL | |
712 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 713 | return FALSE; |
252b5132 RH |
714 | break; |
715 | } | |
716 | } | |
6609fa74 | 717 | |
b34976b6 | 718 | return TRUE; |
252b5132 RH |
719 | } |
720 | \f | |
721 | #define ELF_ARCH bfd_arch_fr30 | |
aa4f99bb AO |
722 | #define ELF_MACHINE_CODE EM_FR30 |
723 | #define ELF_MACHINE_ALT1 EM_CYGNUS_FR30 | |
252b5132 RH |
724 | #define ELF_MAXPAGESIZE 0x1000 |
725 | ||
726 | #define TARGET_BIG_SYM bfd_elf32_fr30_vec | |
727 | #define TARGET_BIG_NAME "elf32-fr30" | |
728 | ||
729 | #define elf_info_to_howto_rel NULL | |
730 | #define elf_info_to_howto fr30_info_to_howto_rela | |
731 | #define elf_backend_relocate_section fr30_elf_relocate_section | |
732 | #define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook | |
252b5132 RH |
733 | #define elf_backend_check_relocs fr30_elf_check_relocs |
734 | ||
735 | #define elf_backend_can_gc_sections 1 | |
b491616a | 736 | #define elf_backend_rela_normal 1 |
252b5132 RH |
737 | |
738 | #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup | |
157090f7 | 739 | #define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup |
252b5132 RH |
740 | |
741 | #include "elf32-target.h" |