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. */ | |
2c3fc389 NC |
30 | static bfd_reloc_status_type |
31 | fr30_elf_i20_reloc (bfd *, arelent *, asymbol *, void * data, | |
32 | asection *, bfd *, char **error_message); | |
33 | static bfd_reloc_status_type | |
34 | fr30_elf_i32_reloc (bfd *, arelent *, asymbol *, void *, | |
35 | asection *, bfd *, char **); | |
252b5132 RH |
36 | |
37 | static reloc_howto_type fr30_elf_howto_table [] = | |
38 | { | |
39 | /* This reloc does nothing. */ | |
40 | HOWTO (R_FR30_NONE, /* type */ | |
41 | 0, /* rightshift */ | |
42 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
43 | 32, /* bitsize */ | |
b34976b6 | 44 | FALSE, /* pc_relative */ |
252b5132 RH |
45 | 0, /* bitpos */ |
46 | complain_overflow_bitfield, /* complain_on_overflow */ | |
47 | bfd_elf_generic_reloc, /* special_function */ | |
48 | "R_FR30_NONE", /* name */ | |
b34976b6 | 49 | FALSE, /* partial_inplace */ |
252b5132 RH |
50 | 0, /* src_mask */ |
51 | 0, /* dst_mask */ | |
b34976b6 | 52 | FALSE), /* pcrel_offset */ |
252b5132 RH |
53 | |
54 | /* An 8 bit absolute relocation. */ | |
55 | HOWTO (R_FR30_8, /* type */ | |
56 | 0, /* rightshift */ | |
57 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
58 | 8, /* bitsize */ | |
b34976b6 | 59 | FALSE, /* pc_relative */ |
252b5132 RH |
60 | 4, /* bitpos */ |
61 | complain_overflow_bitfield, /* complain_on_overflow */ | |
62 | bfd_elf_generic_reloc, /* special_function */ | |
63 | "R_FR30_8", /* name */ | |
d2e2e649 | 64 | FALSE, /* partial_inplace */ |
252b5132 RH |
65 | 0x0000, /* src_mask */ |
66 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 67 | FALSE), /* pcrel_offset */ |
252b5132 RH |
68 | |
69 | /* A 20 bit absolute relocation. */ | |
70 | HOWTO (R_FR30_20, /* type */ | |
71 | 0, /* rightshift */ | |
72 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
73 | 20, /* bitsize */ | |
b34976b6 | 74 | FALSE, /* pc_relative */ |
252b5132 RH |
75 | 0, /* bitpos */ |
76 | complain_overflow_bitfield, /* complain_on_overflow */ | |
77 | fr30_elf_i20_reloc, /* special_function */ | |
78 | "R_FR30_20", /* name */ | |
d2e2e649 | 79 | FALSE, /* partial_inplace */ |
252b5132 RH |
80 | 0x00000000, /* src_mask */ |
81 | 0x00f0ffff, /* dst_mask */ | |
b34976b6 | 82 | FALSE), /* pcrel_offset */ |
252b5132 RH |
83 | |
84 | /* A 32 bit absolute relocation. */ | |
85 | HOWTO (R_FR30_32, /* type */ | |
86 | 0, /* rightshift */ | |
87 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
88 | 32, /* bitsize */ | |
b34976b6 | 89 | FALSE, /* pc_relative */ |
252b5132 RH |
90 | 0, /* bitpos */ |
91 | complain_overflow_bitfield, /* complain_on_overflow */ | |
92 | bfd_elf_generic_reloc, /* special_function */ | |
93 | "R_FR30_32", /* name */ | |
d2e2e649 | 94 | FALSE, /* partial_inplace */ |
252b5132 RH |
95 | 0x00000000, /* src_mask */ |
96 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 97 | FALSE), /* pcrel_offset */ |
252b5132 RH |
98 | |
99 | /* A 32 bit into 48 bits absolute relocation. */ | |
100 | HOWTO (R_FR30_48, /* type */ | |
101 | 0, /* rightshift */ | |
102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
103 | 32, /* bitsize */ | |
b34976b6 | 104 | FALSE, /* pc_relative */ |
252b5132 RH |
105 | 0, /* bitpos */ |
106 | complain_overflow_bitfield, /* complain_on_overflow */ | |
107 | fr30_elf_i32_reloc, /* special_function */ | |
108 | "R_FR30_48", /* name */ | |
d2e2e649 | 109 | FALSE, /* partial_inplace */ |
252b5132 RH |
110 | 0x00000000, /* src_mask */ |
111 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 112 | FALSE), /* pcrel_offset */ |
252b5132 RH |
113 | |
114 | /* A 6 bit absolute relocation. */ | |
115 | HOWTO (R_FR30_6_IN_4, /* type */ | |
116 | 2, /* rightshift */ | |
117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
118 | 6, /* bitsize */ | |
b34976b6 | 119 | FALSE, /* pc_relative */ |
252b5132 RH |
120 | 4, /* bitpos */ |
121 | complain_overflow_unsigned, /* complain_on_overflow */ | |
122 | bfd_elf_generic_reloc, /* special_function */ | |
123 | "R_FR30_6_IN_4", /* name */ | |
d2e2e649 | 124 | FALSE, /* partial_inplace */ |
252b5132 RH |
125 | 0x0000, /* src_mask */ |
126 | 0x00f0, /* dst_mask */ | |
b34976b6 | 127 | FALSE), /* pcrel_offset */ |
6609fa74 | 128 | |
252b5132 RH |
129 | /* An 8 bit absolute relocation. */ |
130 | HOWTO (R_FR30_8_IN_8, /* type */ | |
131 | 0, /* rightshift */ | |
132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
133 | 8, /* bitsize */ | |
b34976b6 | 134 | FALSE, /* pc_relative */ |
252b5132 RH |
135 | 4, /* bitpos */ |
136 | complain_overflow_signed, /* complain_on_overflow */ | |
137 | bfd_elf_generic_reloc,/* special_function */ | |
138 | "R_FR30_8_IN_8", /* name */ | |
d2e2e649 | 139 | FALSE, /* partial_inplace */ |
252b5132 RH |
140 | 0x0000, /* src_mask */ |
141 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 142 | FALSE), /* pcrel_offset */ |
6609fa74 | 143 | |
252b5132 RH |
144 | /* A 9 bit absolute relocation. */ |
145 | HOWTO (R_FR30_9_IN_8, /* type */ | |
146 | 1, /* rightshift */ | |
147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
148 | 9, /* bitsize */ | |
b34976b6 | 149 | FALSE, /* pc_relative */ |
252b5132 RH |
150 | 4, /* bitpos */ |
151 | complain_overflow_signed, /* complain_on_overflow */ | |
152 | bfd_elf_generic_reloc,/* special_function */ | |
153 | "R_FR30_9_IN_8", /* name */ | |
d2e2e649 | 154 | FALSE, /* partial_inplace */ |
252b5132 RH |
155 | 0x0000, /* src_mask */ |
156 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 157 | FALSE), /* pcrel_offset */ |
6609fa74 | 158 | |
252b5132 RH |
159 | /* A 10 bit absolute relocation. */ |
160 | HOWTO (R_FR30_10_IN_8, /* type */ | |
161 | 2, /* rightshift */ | |
162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
163 | 10, /* bitsize */ | |
b34976b6 | 164 | FALSE, /* pc_relative */ |
252b5132 RH |
165 | 4, /* bitpos */ |
166 | complain_overflow_signed, /* complain_on_overflow */ | |
167 | bfd_elf_generic_reloc,/* special_function */ | |
168 | "R_FR30_10_IN_8", /* name */ | |
d2e2e649 | 169 | FALSE, /* partial_inplace */ |
252b5132 RH |
170 | 0x0000, /* src_mask */ |
171 | 0x0ff0, /* dst_mask */ | |
b34976b6 | 172 | FALSE), /* pcrel_offset */ |
252b5132 RH |
173 | |
174 | /* A PC relative 9 bit relocation, right shifted by 1. */ | |
175 | HOWTO (R_FR30_9_PCREL, /* type */ | |
176 | 1, /* rightshift */ | |
177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
178 | 9, /* bitsize */ | |
b34976b6 | 179 | TRUE, /* pc_relative */ |
252b5132 RH |
180 | 0, /* bitpos */ |
181 | complain_overflow_signed, /* complain_on_overflow */ | |
182 | bfd_elf_generic_reloc, /* special_function */ | |
183 | "R_FR30_9_PCREL", /* name */ | |
b34976b6 | 184 | FALSE, /* partial_inplace */ |
252b5132 RH |
185 | 0x0000, /* src_mask */ |
186 | 0x00ff, /* dst_mask */ | |
b34976b6 | 187 | FALSE), /* pcrel_offset */ |
252b5132 RH |
188 | |
189 | /* A PC relative 12 bit relocation, right shifted by 1. */ | |
190 | HOWTO (R_FR30_12_PCREL, /* type */ | |
191 | 1, /* rightshift */ | |
192 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
193 | 12, /* bitsize */ | |
b34976b6 | 194 | TRUE, /* pc_relative */ |
252b5132 RH |
195 | 0, /* bitpos */ |
196 | complain_overflow_signed, /* complain_on_overflow */ | |
197 | bfd_elf_generic_reloc, /* special_function */ | |
198 | "R_FR30_12_PCREL", /* name */ | |
b34976b6 | 199 | FALSE, /* partial_inplace */ |
252b5132 RH |
200 | 0x0000, /* src_mask */ |
201 | 0x07ff, /* dst_mask */ | |
b34976b6 | 202 | FALSE), /* pcrel_offset */ |
252b5132 RH |
203 | /* GNU extension to record C++ vtable hierarchy */ |
204 | HOWTO (R_FR30_GNU_VTINHERIT, /* type */ | |
205 | 0, /* rightshift */ | |
206 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
207 | 0, /* bitsize */ | |
b34976b6 | 208 | FALSE, /* pc_relative */ |
252b5132 RH |
209 | 0, /* bitpos */ |
210 | complain_overflow_dont, /* complain_on_overflow */ | |
211 | NULL, /* special_function */ | |
212 | "R_FR30_GNU_VTINHERIT", /* name */ | |
b34976b6 | 213 | FALSE, /* partial_inplace */ |
252b5132 RH |
214 | 0, /* src_mask */ |
215 | 0, /* dst_mask */ | |
b34976b6 | 216 | FALSE), /* pcrel_offset */ |
252b5132 RH |
217 | |
218 | /* GNU extension to record C++ vtable member usage */ | |
219 | HOWTO (R_FR30_GNU_VTENTRY, /* type */ | |
220 | 0, /* rightshift */ | |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
222 | 0, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
252b5132 RH |
224 | 0, /* bitpos */ |
225 | complain_overflow_dont, /* complain_on_overflow */ | |
226 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
227 | "R_FR30_GNU_VTENTRY", /* name */ | |
b34976b6 | 228 | FALSE, /* partial_inplace */ |
252b5132 RH |
229 | 0, /* src_mask */ |
230 | 0, /* dst_mask */ | |
b34976b6 | 231 | FALSE), /* pcrel_offset */ |
252b5132 RH |
232 | }; |
233 | \f | |
234 | /* Utility to actually perform an R_FR30_20 reloc. */ | |
235 | ||
236 | static bfd_reloc_status_type | |
2c3fc389 NC |
237 | fr30_elf_i20_reloc (bfd *abfd, |
238 | arelent *reloc_entry, | |
239 | asymbol *symbol, | |
240 | void * data, | |
241 | asection *input_section, | |
242 | bfd *output_bfd, | |
243 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 | 244 | { |
b34976b6 | 245 | bfd_vma relocation; |
252b5132 | 246 | unsigned long x; |
6609fa74 | 247 | |
252b5132 RH |
248 | /* This part is from bfd_elf_generic_reloc. */ |
249 | if (output_bfd != (bfd *) NULL | |
250 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
251 | && (! reloc_entry->howto->partial_inplace | |
252 | || reloc_entry->addend == 0)) | |
253 | { | |
254 | reloc_entry->address += input_section->output_offset; | |
255 | return bfd_reloc_ok; | |
256 | } | |
257 | ||
258 | if (output_bfd != NULL) | |
259 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
260 | return bfd_reloc_ok; | |
261 | ||
262 | relocation = | |
263 | symbol->value | |
264 | + symbol->section->output_section->vma | |
265 | + symbol->section->output_offset | |
266 | + reloc_entry->addend; | |
267 | ||
fc633e5b | 268 | if (relocation > (((bfd_vma) 1 << 20) - 1)) |
252b5132 RH |
269 | return bfd_reloc_overflow; |
270 | ||
23ccc829 | 271 | x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); |
252b5132 | 272 | x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); |
dc810e39 | 273 | bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address); |
252b5132 RH |
274 | |
275 | return bfd_reloc_ok; | |
276 | } | |
252b5132 RH |
277 | \f |
278 | /* Utility to actually perform a R_FR30_48 reloc. */ | |
279 | ||
280 | static bfd_reloc_status_type | |
2c3fc389 NC |
281 | fr30_elf_i32_reloc (bfd *abfd, |
282 | arelent *reloc_entry, | |
283 | asymbol *symbol, | |
284 | void * data, | |
285 | asection *input_section, | |
286 | bfd *output_bfd, | |
287 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 | 288 | { |
b34976b6 | 289 | bfd_vma relocation; |
252b5132 RH |
290 | |
291 | /* This part is from bfd_elf_generic_reloc. */ | |
292 | if (output_bfd != (bfd *) NULL | |
293 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
294 | && (! reloc_entry->howto->partial_inplace | |
295 | || reloc_entry->addend == 0)) | |
296 | { | |
297 | reloc_entry->address += input_section->output_offset; | |
298 | return bfd_reloc_ok; | |
299 | } | |
300 | ||
301 | if (output_bfd != NULL) | |
302 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
303 | return bfd_reloc_ok; | |
304 | ||
305 | relocation = | |
306 | symbol->value | |
307 | + symbol->section->output_section->vma | |
308 | + symbol->section->output_offset | |
309 | + reloc_entry->addend; | |
310 | ||
23ccc829 | 311 | bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2); |
252b5132 RH |
312 | |
313 | return bfd_reloc_ok; | |
314 | } | |
315 | \f | |
316 | /* Map BFD reloc types to FR30 ELF reloc types. */ | |
317 | ||
318 | struct fr30_reloc_map | |
319 | { | |
320 | bfd_reloc_code_real_type bfd_reloc_val; | |
321 | unsigned int fr30_reloc_val; | |
322 | }; | |
323 | ||
324 | static const struct fr30_reloc_map fr30_reloc_map [] = | |
325 | { | |
326 | { BFD_RELOC_NONE, R_FR30_NONE }, | |
327 | { BFD_RELOC_8, R_FR30_8 }, | |
328 | { BFD_RELOC_FR30_20, R_FR30_20 }, | |
329 | { BFD_RELOC_32, R_FR30_32 }, | |
330 | { BFD_RELOC_FR30_48, R_FR30_48 }, | |
331 | { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 }, | |
332 | { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 }, | |
333 | { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 }, | |
334 | { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 }, | |
335 | { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL }, | |
336 | { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL }, | |
337 | { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT }, | |
338 | { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY }, | |
339 | }; | |
340 | ||
341 | static reloc_howto_type * | |
2c3fc389 NC |
342 | fr30_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
343 | bfd_reloc_code_real_type code) | |
252b5132 RH |
344 | { |
345 | unsigned int i; | |
346 | ||
347 | for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]); | |
348 | --i;) | |
349 | if (fr30_reloc_map [i].bfd_reloc_val == code) | |
350 | return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val]; | |
6609fa74 | 351 | |
252b5132 RH |
352 | return NULL; |
353 | } | |
354 | ||
157090f7 AM |
355 | static reloc_howto_type * |
356 | fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
357 | { | |
358 | unsigned int i; | |
359 | ||
360 | for (i = 0; | |
361 | i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]); | |
362 | i++) | |
363 | if (fr30_elf_howto_table[i].name != NULL | |
364 | && strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0) | |
365 | return &fr30_elf_howto_table[i]; | |
366 | ||
367 | return NULL; | |
368 | } | |
369 | ||
252b5132 RH |
370 | /* Set the howto pointer for an FR30 ELF reloc. */ |
371 | ||
372 | static void | |
2c3fc389 NC |
373 | fr30_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, |
374 | arelent *cache_ptr, | |
375 | Elf_Internal_Rela *dst) | |
252b5132 RH |
376 | { |
377 | unsigned int r_type; | |
378 | ||
379 | r_type = ELF32_R_TYPE (dst->r_info); | |
380 | BFD_ASSERT (r_type < (unsigned int) R_FR30_max); | |
381 | cache_ptr->howto = & fr30_elf_howto_table [r_type]; | |
382 | } | |
383 | \f | |
384 | /* Perform a single relocation. By default we use the standard BFD | |
385 | routines, but a few relocs, we have to do them ourselves. */ | |
386 | ||
387 | static bfd_reloc_status_type | |
2c3fc389 NC |
388 | fr30_final_link_relocate (reloc_howto_type *howto, |
389 | bfd *input_bfd, | |
390 | asection *input_section, | |
391 | bfd_byte *contents, | |
392 | Elf_Internal_Rela *rel, | |
393 | bfd_vma relocation) | |
252b5132 RH |
394 | { |
395 | bfd_reloc_status_type r = bfd_reloc_ok; | |
b34976b6 AM |
396 | bfd_vma x; |
397 | bfd_signed_vma srel; | |
6609fa74 | 398 | |
252b5132 RH |
399 | switch (howto->type) |
400 | { | |
401 | case R_FR30_20: | |
402 | contents += rel->r_offset; | |
403 | relocation += rel->r_addend; | |
404 | ||
405 | if (relocation > ((1 << 20) - 1)) | |
406 | return bfd_reloc_overflow; | |
6609fa74 | 407 | |
252b5132 RH |
408 | x = bfd_get_32 (input_bfd, contents); |
409 | x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); | |
410 | bfd_put_32 (input_bfd, x, contents); | |
411 | break; | |
6609fa74 | 412 | |
252b5132 RH |
413 | case R_FR30_48: |
414 | contents += rel->r_offset + 2; | |
415 | relocation += rel->r_addend; | |
416 | bfd_put_32 (input_bfd, relocation, contents); | |
417 | break; | |
418 | ||
419 | case R_FR30_9_PCREL: | |
420 | contents += rel->r_offset + 1; | |
421 | srel = (bfd_signed_vma) relocation; | |
422 | srel += rel->r_addend; | |
423 | srel -= rel->r_offset; | |
6609fa74 | 424 | srel -= 2; /* Branch instructions add 2 to the PC... */ |
252b5132 RH |
425 | srel -= (input_section->output_section->vma + |
426 | input_section->output_offset); | |
6609fa74 | 427 | |
252b5132 RH |
428 | if (srel & 1) |
429 | return bfd_reloc_outofrange; | |
430 | if (srel > ((1 << 8) - 1) || (srel < - (1 << 8))) | |
431 | return bfd_reloc_overflow; | |
432 | ||
433 | bfd_put_8 (input_bfd, srel >> 1, contents); | |
434 | break; | |
435 | ||
436 | case R_FR30_12_PCREL: | |
437 | contents += rel->r_offset; | |
438 | srel = (bfd_signed_vma) relocation; | |
439 | srel += rel->r_addend; | |
440 | srel -= rel->r_offset; | |
6609fa74 | 441 | srel -= 2; /* Branch instructions add 2 to the PC... */ |
252b5132 RH |
442 | srel -= (input_section->output_section->vma + |
443 | input_section->output_offset); | |
6609fa74 | 444 | |
252b5132 RH |
445 | if (srel & 1) |
446 | return bfd_reloc_outofrange; | |
447 | if (srel > ((1 << 11) - 1) || (srel < - (1 << 11))) | |
448 | return bfd_reloc_overflow; | |
6609fa74 | 449 | |
252b5132 RH |
450 | x = bfd_get_16 (input_bfd, contents); |
451 | x = (x & 0xf800) | ((srel >> 1) & 0x7ff); | |
452 | bfd_put_16 (input_bfd, x, contents); | |
453 | break; | |
454 | ||
455 | default: | |
456 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
457 | contents, rel->r_offset, | |
458 | relocation, rel->r_addend); | |
459 | } | |
460 | ||
461 | return r; | |
462 | } | |
252b5132 RH |
463 | \f |
464 | /* Relocate an FR30 ELF section. | |
252b5132 RH |
465 | |
466 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
467 | to handle the relocations for a section. | |
468 | ||
469 | The relocs are always passed as Rela structures; if the section | |
470 | actually uses Rel structures, the r_addend field will always be | |
471 | zero. | |
472 | ||
473 | This function is responsible for adjusting the section contents as | |
1049f94e | 474 | necessary, and (if using Rela relocs and generating a relocatable |
252b5132 RH |
475 | output file) adjusting the reloc addend as necessary. |
476 | ||
477 | This function does not have to worry about setting the reloc | |
478 | address or the reloc symbol index. | |
479 | ||
480 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
481 | ||
482 | LOCAL_SECTIONS is an array giving the section in the input file | |
483 | corresponding to the st_shndx field of each local symbol. | |
484 | ||
485 | The global hash table entry for the global symbols can be found | |
486 | via elf_sym_hashes (input_bfd). | |
487 | ||
1049f94e | 488 | When generating relocatable output, this function must handle |
252b5132 RH |
489 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
490 | going to be the section symbol corresponding to the output | |
491 | section, which means that the addend must be adjusted | |
492 | accordingly. */ | |
493 | ||
b34976b6 | 494 | static bfd_boolean |
2c3fc389 NC |
495 | fr30_elf_relocate_section (bfd *output_bfd, |
496 | struct bfd_link_info *info, | |
497 | bfd *input_bfd, | |
498 | asection *input_section, | |
499 | bfd_byte *contents, | |
500 | Elf_Internal_Rela *relocs, | |
501 | Elf_Internal_Sym *local_syms, | |
502 | asection **local_sections) | |
252b5132 | 503 | { |
b34976b6 AM |
504 | Elf_Internal_Shdr *symtab_hdr; |
505 | struct elf_link_hash_entry **sym_hashes; | |
506 | Elf_Internal_Rela *rel; | |
507 | Elf_Internal_Rela *relend; | |
252b5132 RH |
508 | |
509 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
510 | sym_hashes = elf_sym_hashes (input_bfd); | |
511 | relend = relocs + input_section->reloc_count; | |
512 | ||
513 | for (rel = relocs; rel < relend; rel ++) | |
514 | { | |
b34976b6 AM |
515 | reloc_howto_type *howto; |
516 | unsigned long r_symndx; | |
517 | Elf_Internal_Sym *sym; | |
518 | asection *sec; | |
519 | struct elf_link_hash_entry *h; | |
520 | bfd_vma relocation; | |
521 | bfd_reloc_status_type r; | |
dfeffb9f | 522 | const char *name; |
b34976b6 | 523 | int r_type; |
6609fa74 | 524 | |
252b5132 | 525 | r_type = ELF32_R_TYPE (rel->r_info); |
6609fa74 | 526 | |
252b5132 RH |
527 | if ( r_type == R_FR30_GNU_VTINHERIT |
528 | || r_type == R_FR30_GNU_VTENTRY) | |
529 | continue; | |
6609fa74 | 530 | |
252b5132 RH |
531 | r_symndx = ELF32_R_SYM (rel->r_info); |
532 | ||
252b5132 RH |
533 | howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
534 | h = NULL; | |
535 | sym = NULL; | |
536 | sec = NULL; | |
6609fa74 | 537 | |
252b5132 RH |
538 | if (r_symndx < symtab_hdr->sh_info) |
539 | { | |
540 | sym = local_syms + r_symndx; | |
541 | sec = local_sections [r_symndx]; | |
8517fae7 | 542 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
6609fa74 | 543 | |
252b5132 RH |
544 | name = bfd_elf_string_from_elf_section |
545 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
546 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
252b5132 RH |
547 | } |
548 | else | |
549 | { | |
59c2e50f | 550 | bfd_boolean unresolved_reloc, warned; |
6609fa74 | 551 | |
b2a8e766 AM |
552 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
553 | r_symndx, symtab_hdr, sym_hashes, | |
554 | h, sec, relocation, | |
555 | unresolved_reloc, warned); | |
dfeffb9f L |
556 | |
557 | name = h->root.root.string; | |
252b5132 | 558 | } |
6609fa74 | 559 | |
dbaa2011 | 560 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 561 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 562 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
563 | |
564 | if (info->relocatable) | |
565 | continue; | |
566 | ||
252b5132 RH |
567 | r = fr30_final_link_relocate (howto, input_bfd, input_section, |
568 | contents, rel, relocation); | |
569 | ||
570 | if (r != bfd_reloc_ok) | |
571 | { | |
572 | const char * msg = (const char *) NULL; | |
573 | ||
574 | switch (r) | |
575 | { | |
576 | case bfd_reloc_overflow: | |
577 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
578 | (info, (h ? &h->root : NULL), name, howto->name, |
579 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
252b5132 | 580 | break; |
6609fa74 | 581 | |
252b5132 RH |
582 | case bfd_reloc_undefined: |
583 | r = info->callbacks->undefined_symbol | |
5cc7c785 | 584 | (info, name, input_bfd, input_section, rel->r_offset, |
b34976b6 | 585 | TRUE); |
252b5132 | 586 | break; |
6609fa74 | 587 | |
252b5132 RH |
588 | case bfd_reloc_outofrange: |
589 | msg = _("internal error: out of range error"); | |
590 | break; | |
591 | ||
592 | case bfd_reloc_notsupported: | |
593 | msg = _("internal error: unsupported relocation error"); | |
594 | break; | |
595 | ||
596 | case bfd_reloc_dangerous: | |
597 | msg = _("internal error: dangerous relocation"); | |
598 | break; | |
599 | ||
600 | default: | |
601 | msg = _("internal error: unknown error"); | |
602 | break; | |
603 | } | |
604 | ||
605 | if (msg) | |
606 | r = info->callbacks->warning | |
607 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
608 | ||
609 | if (! r) | |
b34976b6 | 610 | return FALSE; |
252b5132 RH |
611 | } |
612 | } | |
613 | ||
b34976b6 | 614 | return TRUE; |
252b5132 RH |
615 | } |
616 | \f | |
617 | /* Return the section that should be marked against GC for a given | |
618 | relocation. */ | |
619 | ||
620 | static asection * | |
07adf181 AM |
621 | fr30_elf_gc_mark_hook (asection *sec, |
622 | struct bfd_link_info *info, | |
623 | Elf_Internal_Rela *rel, | |
624 | struct elf_link_hash_entry *h, | |
625 | Elf_Internal_Sym *sym) | |
252b5132 RH |
626 | { |
627 | if (h != NULL) | |
07adf181 AM |
628 | switch (ELF32_R_TYPE (rel->r_info)) |
629 | { | |
630 | case R_FR30_GNU_VTINHERIT: | |
631 | case R_FR30_GNU_VTENTRY: | |
632 | return NULL; | |
633 | } | |
634 | ||
635 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
636 | } |
637 | ||
638 | /* Look through the relocs for a section during the first phase. | |
639 | Since we don't do .gots or .plts, we just need to consider the | |
640 | virtual table relocs for gc. */ | |
6609fa74 | 641 | |
b34976b6 | 642 | static bfd_boolean |
2c3fc389 NC |
643 | fr30_elf_check_relocs (bfd *abfd, |
644 | struct bfd_link_info *info, | |
645 | asection *sec, | |
646 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
647 | { |
648 | Elf_Internal_Shdr *symtab_hdr; | |
5582a088 | 649 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
650 | const Elf_Internal_Rela *rel; |
651 | const Elf_Internal_Rela *rel_end; | |
6609fa74 | 652 | |
1049f94e | 653 | if (info->relocatable) |
b34976b6 | 654 | return TRUE; |
6609fa74 | 655 | |
252b5132 RH |
656 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
657 | sym_hashes = elf_sym_hashes (abfd); | |
6609fa74 | 658 | |
252b5132 RH |
659 | rel_end = relocs + sec->reloc_count; |
660 | for (rel = relocs; rel < rel_end; rel++) | |
661 | { | |
662 | struct elf_link_hash_entry *h; | |
663 | unsigned long r_symndx; | |
6609fa74 | 664 | |
252b5132 RH |
665 | r_symndx = ELF32_R_SYM (rel->r_info); |
666 | if (r_symndx < symtab_hdr->sh_info) | |
667 | h = NULL; | |
668 | else | |
973a3492 L |
669 | { |
670 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
671 | while (h->root.type == bfd_link_hash_indirect | |
672 | || h->root.type == bfd_link_hash_warning) | |
673 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
674 | |
675 | /* PR15323, ref flags aren't set for references in the same | |
676 | object. */ | |
677 | h->root.non_ir_ref = 1; | |
973a3492 | 678 | } |
6609fa74 | 679 | |
252b5132 RH |
680 | switch (ELF32_R_TYPE (rel->r_info)) |
681 | { | |
682 | /* This relocation describes the C++ object vtable hierarchy. | |
683 | Reconstruct it for later use during GC. */ | |
684 | case R_FR30_GNU_VTINHERIT: | |
c152c796 | 685 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 686 | return FALSE; |
252b5132 | 687 | break; |
6609fa74 | 688 | |
252b5132 RH |
689 | /* This relocation describes which C++ vtable entries are actually |
690 | used. Record for later use during GC. */ | |
691 | case R_FR30_GNU_VTENTRY: | |
d17e0c6e JB |
692 | BFD_ASSERT (h != NULL); |
693 | if (h != NULL | |
694 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 695 | return FALSE; |
252b5132 RH |
696 | break; |
697 | } | |
698 | } | |
6609fa74 | 699 | |
b34976b6 | 700 | return TRUE; |
252b5132 RH |
701 | } |
702 | \f | |
703 | #define ELF_ARCH bfd_arch_fr30 | |
aa4f99bb AO |
704 | #define ELF_MACHINE_CODE EM_FR30 |
705 | #define ELF_MACHINE_ALT1 EM_CYGNUS_FR30 | |
252b5132 RH |
706 | #define ELF_MAXPAGESIZE 0x1000 |
707 | ||
708 | #define TARGET_BIG_SYM bfd_elf32_fr30_vec | |
709 | #define TARGET_BIG_NAME "elf32-fr30" | |
710 | ||
711 | #define elf_info_to_howto_rel NULL | |
712 | #define elf_info_to_howto fr30_info_to_howto_rela | |
713 | #define elf_backend_relocate_section fr30_elf_relocate_section | |
714 | #define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook | |
252b5132 RH |
715 | #define elf_backend_check_relocs fr30_elf_check_relocs |
716 | ||
717 | #define elf_backend_can_gc_sections 1 | |
b491616a | 718 | #define elf_backend_rela_normal 1 |
252b5132 RH |
719 | |
720 | #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup | |
157090f7 | 721 | #define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup |
252b5132 RH |
722 | |
723 | #include "elf32-target.h" |