Commit | Line | Data |
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3d3d428f | 1 | /* BFD back-end for National Semiconductor's CR16 ELF |
fb34365b | 2 | Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
3d3d428f NC |
3 | Written by M R Swami Reddy. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
3d3d428f NC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software Foundation, | |
19 | Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
20 | ||
21 | #include "sysdep.h" | |
22 | #include "bfd.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "libiberty.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/cr16.h" | |
28 | ||
99706f30 SR |
29 | /* The cr16 linker needs to keep track of the number of relocs that |
30 | it decides to copy in check_relocs for each symbol. This is so | |
31 | that it can discard PC relative relocs if it doesn't need them when | |
32 | linking with -Bsymbolic. We store the information in a field | |
33 | extending the regular ELF linker hash table. */ | |
34 | ||
35 | struct elf32_cr16_link_hash_entry { | |
36 | /* The basic elf link hash table entry. */ | |
37 | struct elf_link_hash_entry root; | |
38 | ||
39 | /* For function symbols, the number of times this function is | |
40 | called directly (ie by name). */ | |
41 | unsigned int direct_calls; | |
42 | ||
43 | /* For function symbols, the size of this function's stack | |
44 | (if <= 255 bytes). We stuff this into "call" instructions | |
45 | to this target when it's valid and profitable to do so. | |
46 | ||
47 | This does not include stack allocated by movm! */ | |
48 | unsigned char stack_size; | |
49 | ||
50 | /* For function symbols, arguments (if any) for movm instruction | |
51 | in the prologue. We stuff this value into "call" instructions | |
52 | to the target when it's valid and profitable to do so. */ | |
53 | unsigned char movm_args; | |
54 | ||
55 | /* For function symbols, the amount of stack space that would be allocated | |
56 | by the movm instruction. This is redundant with movm_args, but we | |
57 | add it to the hash table to avoid computing it over and over. */ | |
58 | unsigned char movm_stack_size; | |
59 | ||
60 | /* Used to mark functions which have had redundant parts of their | |
61 | prologue deleted. */ | |
62 | #define CR16_DELETED_PROLOGUE_BYTES 0x1 | |
63 | unsigned char flags; | |
64 | ||
65 | /* Calculated value. */ | |
66 | bfd_vma value; | |
67 | }; | |
68 | ||
69 | /* We derive a hash table from the main elf linker hash table so | |
70 | we can store state variables and a secondary hash table without | |
71 | resorting to global variables. */ | |
72 | struct elf32_cr16_link_hash_table { | |
73 | /* The main hash table. */ | |
74 | struct elf_link_hash_table root; | |
75 | ||
76 | /* A hash table for static functions. We could derive a new hash table | |
77 | instead of using the full elf32_cr16_link_hash_table if we wanted | |
78 | to save some memory. */ | |
79 | struct elf32_cr16_link_hash_table *static_hash_table; | |
80 | ||
81 | /* Random linker state flags. */ | |
82 | #define CR16_HASH_ENTRIES_INITIALIZED 0x1 | |
83 | char flags; | |
84 | }; | |
85 | ||
86 | /* For CR16 linker hash table. */ | |
87 | ||
88 | /* Get the CR16 ELF linker hash table from a link_info structure. */ | |
89 | ||
90 | #define elf32_cr16_hash_table(p) \ | |
91 | ((struct elf32_cr16_link_hash_table *) ((p)->hash)) | |
92 | ||
93 | #define elf32_cr16_link_hash_traverse(table, func, info) \ | |
94 | (elf_link_hash_traverse \ | |
95 | (&(table)->root, \ | |
96 | (bfd_boolean (*) ((struct elf_link_hash_entry *, void *))) (func), (info))) | |
97 | ||
3d3d428f NC |
98 | /* cr16_reloc_map array maps BFD relocation enum into a CRGAS relocation type. */ |
99 | ||
100 | struct cr16_reloc_map | |
101 | { | |
102 | bfd_reloc_code_real_type bfd_reloc_enum; /* BFD relocation enum. */ | |
103 | unsigned short cr16_reloc_type; /* CR16 relocation type. */ | |
104 | }; | |
105 | ||
106 | static const struct cr16_reloc_map cr16_reloc_map[R_CR16_MAX] = | |
107 | { | |
108 | {BFD_RELOC_NONE, R_CR16_NONE}, | |
109 | {BFD_RELOC_CR16_NUM8, R_CR16_NUM8}, | |
110 | {BFD_RELOC_CR16_NUM16, R_CR16_NUM16}, | |
111 | {BFD_RELOC_CR16_NUM32, R_CR16_NUM32}, | |
112 | {BFD_RELOC_CR16_NUM32a, R_CR16_NUM32a}, | |
113 | {BFD_RELOC_CR16_REGREL4, R_CR16_REGREL4}, | |
114 | {BFD_RELOC_CR16_REGREL4a, R_CR16_REGREL4a}, | |
115 | {BFD_RELOC_CR16_REGREL14, R_CR16_REGREL14}, | |
116 | {BFD_RELOC_CR16_REGREL14a, R_CR16_REGREL14a}, | |
117 | {BFD_RELOC_CR16_REGREL16, R_CR16_REGREL16}, | |
118 | {BFD_RELOC_CR16_REGREL20, R_CR16_REGREL20}, | |
119 | {BFD_RELOC_CR16_REGREL20a, R_CR16_REGREL20a}, | |
120 | {BFD_RELOC_CR16_ABS20, R_CR16_ABS20}, | |
121 | {BFD_RELOC_CR16_ABS24, R_CR16_ABS24}, | |
122 | {BFD_RELOC_CR16_IMM4, R_CR16_IMM4}, | |
123 | {BFD_RELOC_CR16_IMM8, R_CR16_IMM8}, | |
124 | {BFD_RELOC_CR16_IMM16, R_CR16_IMM16}, | |
125 | {BFD_RELOC_CR16_IMM20, R_CR16_IMM20}, | |
126 | {BFD_RELOC_CR16_IMM24, R_CR16_IMM24}, | |
127 | {BFD_RELOC_CR16_IMM32, R_CR16_IMM32}, | |
128 | {BFD_RELOC_CR16_IMM32a, R_CR16_IMM32a}, | |
129 | {BFD_RELOC_CR16_DISP4, R_CR16_DISP4}, | |
130 | {BFD_RELOC_CR16_DISP8, R_CR16_DISP8}, | |
131 | {BFD_RELOC_CR16_DISP16, R_CR16_DISP16}, | |
132 | {BFD_RELOC_CR16_DISP24, R_CR16_DISP24}, | |
7fac7ff4 NC |
133 | {BFD_RELOC_CR16_DISP24a, R_CR16_DISP24a}, |
134 | {BFD_RELOC_CR16_SWITCH8, R_CR16_SWITCH8}, | |
135 | {BFD_RELOC_CR16_SWITCH16, R_CR16_SWITCH16}, | |
99706f30 SR |
136 | {BFD_RELOC_CR16_SWITCH32, R_CR16_SWITCH32}, |
137 | {BFD_RELOC_CR16_GOT_REGREL20, R_CR16_GOT_REGREL20}, | |
138 | {BFD_RELOC_CR16_GOTC_REGREL20, R_CR16_GOTC_REGREL20}, | |
139 | {BFD_RELOC_CR16_GLOB_DAT, R_CR16_GLOB_DAT} | |
3d3d428f NC |
140 | }; |
141 | ||
142 | static reloc_howto_type cr16_elf_howto_table[] = | |
143 | { | |
144 | HOWTO (R_CR16_NONE, /* type */ | |
145 | 0, /* rightshift */ | |
146 | 2, /* size */ | |
147 | 32, /* bitsize */ | |
148 | FALSE, /* pc_relative */ | |
149 | 0, /* bitpos */ | |
150 | complain_overflow_dont, /* complain_on_overflow */ | |
151 | bfd_elf_generic_reloc, /* special_function */ | |
152 | "R_CR16_NONE", /* name */ | |
153 | FALSE, /* partial_inplace */ | |
154 | 0, /* src_mask */ | |
155 | 0, /* dst_mask */ | |
156 | FALSE), /* pcrel_offset */ | |
157 | ||
158 | HOWTO (R_CR16_NUM8, /* type */ | |
159 | 0, /* rightshift */ | |
160 | 0, /* size */ | |
161 | 8, /* bitsize */ | |
162 | FALSE, /* pc_relative */ | |
163 | 0, /* bitpos */ | |
164 | complain_overflow_bitfield,/* complain_on_overflow */ | |
165 | bfd_elf_generic_reloc, /* special_function */ | |
166 | "R_CR16_NUM8", /* name */ | |
167 | FALSE, /* partial_inplace */ | |
dc80fd5c | 168 | 0x0, /* src_mask */ |
3d3d428f NC |
169 | 0xff, /* dst_mask */ |
170 | FALSE), /* pcrel_offset */ | |
171 | ||
172 | HOWTO (R_CR16_NUM16, /* type */ | |
173 | 0, /* rightshift */ | |
174 | 1, /* size */ | |
175 | 16, /* bitsize */ | |
176 | FALSE, /* pc_relative */ | |
177 | 0, /* bitpos */ | |
178 | complain_overflow_bitfield,/* complain_on_overflow */ | |
179 | bfd_elf_generic_reloc, /* special_function */ | |
180 | "R_CR16_NUM16", /* name */ | |
181 | FALSE, /* partial_inplace */ | |
dc80fd5c | 182 | 0x0, /* src_mask */ |
3d3d428f NC |
183 | 0xffff, /* dst_mask */ |
184 | FALSE), /* pcrel_offset */ | |
185 | ||
186 | HOWTO (R_CR16_NUM32, /* type */ | |
187 | 0, /* rightshift */ | |
188 | 2, /* size */ | |
189 | 32, /* bitsize */ | |
190 | FALSE, /* pc_relative */ | |
191 | 0, /* bitpos */ | |
192 | complain_overflow_bitfield,/* complain_on_overflow */ | |
193 | bfd_elf_generic_reloc, /* special_function */ | |
194 | "R_CR16_NUM32", /* name */ | |
195 | FALSE, /* partial_inplace */ | |
dc80fd5c | 196 | 0x0, /* src_mask */ |
3d3d428f NC |
197 | 0xffffffff, /* dst_mask */ |
198 | FALSE), /* pcrel_offset */ | |
199 | ||
200 | HOWTO (R_CR16_NUM32a, /* type */ | |
201 | 1, /* rightshift */ | |
202 | 2, /* size */ | |
203 | 32, /* bitsize */ | |
204 | FALSE, /* pc_relative */ | |
205 | 0, /* bitpos */ | |
206 | complain_overflow_bitfield,/* complain_on_overflow */ | |
207 | bfd_elf_generic_reloc, /* special_function */ | |
208 | "R_CR16_NUM32a", /* name */ | |
209 | FALSE, /* partial_inplace */ | |
dc80fd5c | 210 | 0x0, /* src_mask */ |
3d3d428f NC |
211 | 0xffffffff, /* dst_mask */ |
212 | FALSE), /* pcrel_offset */ | |
213 | ||
214 | HOWTO (R_CR16_REGREL4, /* type */ | |
215 | 0, /* rightshift */ | |
216 | 0, /* size */ | |
217 | 4, /* bitsize */ | |
218 | FALSE, /* pc_relative */ | |
219 | 0, /* bitpos */ | |
220 | complain_overflow_bitfield,/* complain_on_overflow */ | |
221 | bfd_elf_generic_reloc, /* special_function */ | |
222 | "R_CR16_REGREL4", /* name */ | |
223 | FALSE, /* partial_inplace */ | |
dc80fd5c | 224 | 0x0, /* src_mask */ |
3d3d428f NC |
225 | 0xf, /* dst_mask */ |
226 | FALSE), /* pcrel_offset */ | |
227 | ||
228 | HOWTO (R_CR16_REGREL4a, /* type */ | |
229 | 0, /* rightshift */ | |
230 | 0, /* size */ | |
231 | 4, /* bitsize */ | |
232 | FALSE, /* pc_relative */ | |
233 | 0, /* bitpos */ | |
234 | complain_overflow_bitfield,/* complain_on_overflow */ | |
235 | bfd_elf_generic_reloc, /* special_function */ | |
236 | "R_CR16_REGREL4a", /* name */ | |
237 | FALSE, /* partial_inplace */ | |
dc80fd5c | 238 | 0x0, /* src_mask */ |
3d3d428f NC |
239 | 0xf, /* dst_mask */ |
240 | FALSE), /* pcrel_offset */ | |
241 | ||
242 | HOWTO (R_CR16_REGREL14, /* type */ | |
243 | 0, /* rightshift */ | |
244 | 1, /* size */ | |
245 | 14, /* bitsize */ | |
246 | FALSE, /* pc_relative */ | |
247 | 0, /* bitpos */ | |
248 | complain_overflow_bitfield,/* complain_on_overflow */ | |
249 | bfd_elf_generic_reloc, /* special_function */ | |
250 | "R_CR16_REGREL14", /* name */ | |
251 | FALSE, /* partial_inplace */ | |
dc80fd5c | 252 | 0x0, /* src_mask */ |
3d3d428f NC |
253 | 0x3fff, /* dst_mask */ |
254 | FALSE), /* pcrel_offset */ | |
255 | ||
256 | HOWTO (R_CR16_REGREL14a, /* type */ | |
257 | 0, /* rightshift */ | |
258 | 1, /* size */ | |
259 | 14, /* bitsize */ | |
260 | FALSE, /* pc_relative */ | |
261 | 0, /* bitpos */ | |
262 | complain_overflow_bitfield,/* complain_on_overflow */ | |
263 | bfd_elf_generic_reloc, /* special_function */ | |
264 | "R_CR16_REGREL14a", /* name */ | |
265 | FALSE, /* partial_inplace */ | |
dc80fd5c | 266 | 0x0, /* src_mask */ |
3d3d428f NC |
267 | 0x3fff, /* dst_mask */ |
268 | FALSE), /* pcrel_offset */ | |
269 | ||
270 | HOWTO (R_CR16_REGREL16, /* type */ | |
271 | 0, /* rightshift */ | |
272 | 1, /* size */ | |
273 | 16, /* bitsize */ | |
274 | FALSE, /* pc_relative */ | |
275 | 0, /* bitpos */ | |
276 | complain_overflow_bitfield,/* complain_on_overflow */ | |
277 | bfd_elf_generic_reloc, /* special_function */ | |
278 | "R_CR16_REGREL16", /* name */ | |
279 | FALSE, /* partial_inplace */ | |
dc80fd5c | 280 | 0x0, /* src_mask */ |
3d3d428f NC |
281 | 0xffff, /* dst_mask */ |
282 | FALSE), /* pcrel_offset */ | |
283 | ||
284 | HOWTO (R_CR16_REGREL20, /* type */ | |
285 | 0, /* rightshift */ | |
286 | 2, /* size */ | |
287 | 20, /* bitsize */ | |
288 | FALSE, /* pc_relative */ | |
289 | 0, /* bitpos */ | |
290 | complain_overflow_bitfield,/* complain_on_overflow */ | |
291 | bfd_elf_generic_reloc, /* special_function */ | |
292 | "R_CR16_REGREL20", /* name */ | |
293 | FALSE, /* partial_inplace */ | |
dc80fd5c | 294 | 0x0, /* src_mask */ |
3d3d428f NC |
295 | 0xfffff, /* dst_mask */ |
296 | FALSE), /* pcrel_offset */ | |
297 | ||
298 | HOWTO (R_CR16_REGREL20a, /* type */ | |
299 | 0, /* rightshift */ | |
300 | 2, /* size */ | |
301 | 20, /* bitsize */ | |
302 | FALSE, /* pc_relative */ | |
303 | 0, /* bitpos */ | |
304 | complain_overflow_bitfield,/* complain_on_overflow */ | |
305 | bfd_elf_generic_reloc, /* special_function */ | |
306 | "R_CR16_REGREL20a", /* name */ | |
307 | FALSE, /* partial_inplace */ | |
dc80fd5c | 308 | 0x0, /* src_mask */ |
3d3d428f NC |
309 | 0xfffff, /* dst_mask */ |
310 | FALSE), /* pcrel_offset */ | |
311 | ||
312 | HOWTO (R_CR16_ABS20, /* type */ | |
313 | 0, /* rightshift */ | |
314 | 2, /* size */ | |
315 | 20, /* bitsize */ | |
316 | FALSE, /* pc_relative */ | |
317 | 0, /* bitpos */ | |
318 | complain_overflow_bitfield,/* complain_on_overflow */ | |
319 | bfd_elf_generic_reloc, /* special_function */ | |
320 | "R_CR16_ABS20", /* name */ | |
321 | FALSE, /* partial_inplace */ | |
dc80fd5c | 322 | 0x0, /* src_mask */ |
3d3d428f NC |
323 | 0xfffff, /* dst_mask */ |
324 | FALSE), /* pcrel_offset */ | |
325 | ||
326 | HOWTO (R_CR16_ABS24, /* type */ | |
327 | 0, /* rightshift */ | |
328 | 2, /* size */ | |
329 | 24, /* bitsize */ | |
330 | FALSE, /* pc_relative */ | |
331 | 0, /* bitpos */ | |
332 | complain_overflow_bitfield,/* complain_on_overflow */ | |
333 | bfd_elf_generic_reloc, /* special_function */ | |
334 | "R_CR16_ABS24", /* name */ | |
335 | FALSE, /* partial_inplace */ | |
dc80fd5c | 336 | 0x0, /* src_mask */ |
3d3d428f NC |
337 | 0xffffff, /* dst_mask */ |
338 | FALSE), /* pcrel_offset */ | |
339 | ||
340 | HOWTO (R_CR16_IMM4, /* type */ | |
341 | 0, /* rightshift */ | |
342 | 0, /* size */ | |
343 | 4, /* bitsize */ | |
344 | FALSE, /* pc_relative */ | |
345 | 0, /* bitpos */ | |
346 | complain_overflow_bitfield,/* complain_on_overflow */ | |
347 | bfd_elf_generic_reloc, /* special_function */ | |
348 | "R_CR16_IMM4", /* name */ | |
349 | FALSE, /* partial_inplace */ | |
dc80fd5c | 350 | 0x0, /* src_mask */ |
3d3d428f NC |
351 | 0xf, /* dst_mask */ |
352 | FALSE), /* pcrel_offset */ | |
353 | ||
354 | HOWTO (R_CR16_IMM8, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 0, /* size */ | |
357 | 8, /* bitsize */ | |
358 | FALSE, /* pc_relative */ | |
359 | 0, /* bitpos */ | |
360 | complain_overflow_bitfield,/* complain_on_overflow */ | |
361 | bfd_elf_generic_reloc, /* special_function */ | |
362 | "R_CR16_IMM8", /* name */ | |
363 | FALSE, /* partial_inplace */ | |
dc80fd5c | 364 | 0x0, /* src_mask */ |
3d3d428f NC |
365 | 0xff, /* dst_mask */ |
366 | FALSE), /* pcrel_offset */ | |
367 | ||
368 | HOWTO (R_CR16_IMM16, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 1, /* size */ | |
371 | 16, /* bitsize */ | |
372 | FALSE, /* pc_relative */ | |
373 | 0, /* bitpos */ | |
374 | complain_overflow_bitfield,/* complain_on_overflow */ | |
375 | bfd_elf_generic_reloc, /* special_function */ | |
376 | "R_CR16_IMM16", /* name */ | |
377 | FALSE, /* partial_inplace */ | |
dc80fd5c | 378 | 0x0, /* src_mask */ |
3d3d428f NC |
379 | 0xffff, /* dst_mask */ |
380 | FALSE), /* pcrel_offset */ | |
381 | ||
382 | HOWTO (R_CR16_IMM20, /* type */ | |
383 | 0, /* rightshift */ | |
384 | 2, /* size */ | |
385 | 20, /* bitsize */ | |
386 | FALSE, /* pc_relative */ | |
387 | 0, /* bitpos */ | |
388 | complain_overflow_bitfield,/* complain_on_overflow */ | |
389 | bfd_elf_generic_reloc, /* special_function */ | |
390 | "R_CR16_IMM20", /* name */ | |
391 | FALSE, /* partial_inplace */ | |
dc80fd5c | 392 | 0x0, /* src_mask */ |
3d3d428f NC |
393 | 0xfffff, /* dst_mask */ |
394 | FALSE), /* pcrel_offset */ | |
395 | ||
396 | HOWTO (R_CR16_IMM24, /* type */ | |
397 | 0, /* rightshift */ | |
398 | 2, /* size */ | |
399 | 24, /* bitsize */ | |
400 | FALSE, /* pc_relative */ | |
401 | 0, /* bitpos */ | |
402 | complain_overflow_bitfield,/* complain_on_overflow */ | |
403 | bfd_elf_generic_reloc, /* special_function */ | |
404 | "R_CR16_IMM24", /* name */ | |
405 | FALSE, /* partial_inplace */ | |
dc80fd5c | 406 | 0x0, /* src_mask */ |
3d3d428f NC |
407 | 0xffffff, /* dst_mask */ |
408 | FALSE), /* pcrel_offset */ | |
409 | ||
410 | HOWTO (R_CR16_IMM32, /* type */ | |
411 | 0, /* rightshift */ | |
412 | 2, /* size */ | |
413 | 32, /* bitsize */ | |
414 | FALSE, /* pc_relative */ | |
415 | 0, /* bitpos */ | |
416 | complain_overflow_bitfield,/* complain_on_overflow */ | |
417 | bfd_elf_generic_reloc, /* special_function */ | |
418 | "R_CR16_IMM32", /* name */ | |
419 | FALSE, /* partial_inplace */ | |
dc80fd5c | 420 | 0x0, /* src_mask */ |
3d3d428f NC |
421 | 0xffffffff, /* dst_mask */ |
422 | FALSE), /* pcrel_offset */ | |
423 | ||
424 | HOWTO (R_CR16_IMM32a, /* type */ | |
425 | 1, /* rightshift */ | |
426 | 2, /* size */ | |
427 | 32, /* bitsize */ | |
428 | FALSE, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_bitfield,/* complain_on_overflow */ | |
431 | bfd_elf_generic_reloc, /* special_function */ | |
432 | "R_CR16_IMM32a", /* name */ | |
433 | FALSE, /* partial_inplace */ | |
dc80fd5c | 434 | 0x0, /* src_mask */ |
3d3d428f NC |
435 | 0xffffffff, /* dst_mask */ |
436 | FALSE), /* pcrel_offset */ | |
437 | ||
438 | HOWTO (R_CR16_DISP4, /* type */ | |
439 | 1, /* rightshift */ | |
440 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
441 | 4, /* bitsize */ | |
442 | TRUE, /* pc_relative */ | |
443 | 0, /* bitpos */ | |
444 | complain_overflow_unsigned, /* complain_on_overflow */ | |
445 | bfd_elf_generic_reloc, /* special_function */ | |
446 | "R_CR16_DISP4", /* name */ | |
447 | FALSE, /* partial_inplace */ | |
dc80fd5c | 448 | 0x0, /* src_mask */ |
3d3d428f NC |
449 | 0xf, /* dst_mask */ |
450 | FALSE), /* pcrel_offset */ | |
451 | ||
452 | HOWTO (R_CR16_DISP8, /* type */ | |
453 | 1, /* rightshift */ | |
454 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
455 | 8, /* bitsize */ | |
456 | TRUE, /* pc_relative */ | |
457 | 0, /* bitpos */ | |
458 | complain_overflow_unsigned, /* complain_on_overflow */ | |
459 | bfd_elf_generic_reloc, /* special_function */ | |
460 | "R_CR16_DISP8", /* name */ | |
461 | FALSE, /* partial_inplace */ | |
dc80fd5c | 462 | 0x0, /* src_mask */ |
3d3d428f NC |
463 | 0x1ff, /* dst_mask */ |
464 | FALSE), /* pcrel_offset */ | |
465 | ||
466 | HOWTO (R_CR16_DISP16, /* type */ | |
467 | 0, /* rightshift REVIITS: To sync with WinIDEA*/ | |
468 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 16, /* bitsize */ | |
470 | TRUE, /* pc_relative */ | |
471 | 0, /* bitpos */ | |
472 | complain_overflow_unsigned, /* complain_on_overflow */ | |
473 | bfd_elf_generic_reloc, /* special_function */ | |
474 | "R_CR16_DISP16", /* name */ | |
475 | FALSE, /* partial_inplace */ | |
dc80fd5c | 476 | 0x0, /* src_mask */ |
3d3d428f NC |
477 | 0x1ffff, /* dst_mask */ |
478 | FALSE), /* pcrel_offset */ | |
479 | /* REVISIT: DISP24 should be left-shift by 2 as per ISA doc | |
480 | but its not done, to sync with WinIDEA and CR16 4.1 tools */ | |
481 | HOWTO (R_CR16_DISP24, /* type */ | |
482 | 0, /* rightshift */ | |
483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 24, /* bitsize */ | |
485 | TRUE, /* pc_relative */ | |
486 | 0, /* bitpos */ | |
487 | complain_overflow_unsigned, /* complain_on_overflow */ | |
488 | bfd_elf_generic_reloc, /* special_function */ | |
489 | "R_CR16_DISP24", /* name */ | |
490 | FALSE, /* partial_inplace */ | |
dc80fd5c | 491 | 0x0, /* src_mask */ |
3d3d428f NC |
492 | 0x1ffffff, /* dst_mask */ |
493 | FALSE), /* pcrel_offset */ | |
494 | ||
495 | HOWTO (R_CR16_DISP24a, /* type */ | |
496 | 0, /* rightshift */ | |
497 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
498 | 24, /* bitsize */ | |
499 | TRUE, /* pc_relative */ | |
500 | 0, /* bitpos */ | |
501 | complain_overflow_unsigned, /* complain_on_overflow */ | |
502 | bfd_elf_generic_reloc, /* special_function */ | |
503 | "R_CR16_DISP24a", /* name */ | |
504 | FALSE, /* partial_inplace */ | |
dc80fd5c | 505 | 0x0, /* src_mask */ |
3d3d428f | 506 | 0xffffff, /* dst_mask */ |
7fac7ff4 NC |
507 | FALSE), /* pcrel_offset */ |
508 | ||
509 | /* An 8 bit switch table entry. This is generated for an expression | |
510 | such as ``.byte L1 - L2''. The offset holds the difference | |
511 | between the reloc address and L2. */ | |
512 | HOWTO (R_CR16_SWITCH8, /* type */ | |
513 | 0, /* rightshift */ | |
514 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
515 | 8, /* bitsize */ | |
516 | FALSE, /* pc_relative */ | |
517 | 0, /* bitpos */ | |
518 | complain_overflow_unsigned, /* complain_on_overflow */ | |
519 | bfd_elf_generic_reloc, /* special_function */ | |
520 | "R_CR16_SWITCH8", /* name */ | |
521 | FALSE, /* partial_inplace */ | |
dc80fd5c | 522 | 0x0, /* src_mask */ |
7fac7ff4 NC |
523 | 0xff, /* dst_mask */ |
524 | TRUE), /* pcrel_offset */ | |
525 | ||
526 | /* A 16 bit switch table entry. This is generated for an expression | |
527 | such as ``.word L1 - L2''. The offset holds the difference | |
528 | between the reloc address and L2. */ | |
529 | HOWTO (R_CR16_SWITCH16, /* type */ | |
530 | 0, /* rightshift */ | |
531 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 16, /* bitsize */ | |
533 | FALSE, /* pc_relative */ | |
534 | 0, /* bitpos */ | |
535 | complain_overflow_unsigned, /* complain_on_overflow */ | |
536 | bfd_elf_generic_reloc, /* special_function */ | |
537 | "R_CR16_SWITCH16", /* name */ | |
538 | FALSE, /* partial_inplace */ | |
dc80fd5c | 539 | 0x0, /* src_mask */ |
7fac7ff4 NC |
540 | 0xffff, /* dst_mask */ |
541 | TRUE), /* pcrel_offset */ | |
542 | ||
543 | /* A 32 bit switch table entry. This is generated for an expression | |
544 | such as ``.long L1 - L2''. The offset holds the difference | |
545 | between the reloc address and L2. */ | |
546 | HOWTO (R_CR16_SWITCH32, /* type */ | |
547 | 0, /* rightshift */ | |
548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 32, /* bitsize */ | |
550 | FALSE, /* pc_relative */ | |
551 | 0, /* bitpos */ | |
552 | complain_overflow_unsigned, /* complain_on_overflow */ | |
553 | bfd_elf_generic_reloc, /* special_function */ | |
554 | "R_CR16_SWITCH32", /* name */ | |
555 | FALSE, /* partial_inplace */ | |
dc80fd5c | 556 | 0x0, /* src_mask */ |
7fac7ff4 | 557 | 0xffffffff, /* dst_mask */ |
99706f30 SR |
558 | TRUE), /* pcrel_offset */ |
559 | ||
560 | HOWTO (R_CR16_GOT_REGREL20, /* type */ | |
561 | 0, /* rightshift */ | |
562 | 2, /* size */ | |
563 | 20, /* bitsize */ | |
564 | FALSE, /* pc_relative */ | |
565 | 0, /* bitpos */ | |
566 | complain_overflow_bitfield,/* complain_on_overflow */ | |
567 | bfd_elf_generic_reloc, /* special_function */ | |
568 | "R_CR16_GOT_REGREL20", /* name */ | |
569 | TRUE, /* partial_inplace */ | |
570 | 0x0, /* src_mask */ | |
571 | 0xfffff, /* dst_mask */ | |
572 | FALSE), /* pcrel_offset */ | |
573 | ||
574 | HOWTO (R_CR16_GOTC_REGREL20, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 2, /* size */ | |
577 | 20, /* bitsize */ | |
578 | FALSE, /* pc_relative */ | |
579 | 0, /* bitpos */ | |
580 | complain_overflow_bitfield,/* complain_on_overflow */ | |
581 | bfd_elf_generic_reloc, /* special_function */ | |
582 | "R_CR16_GOTC_REGREL20", /* name */ | |
583 | TRUE, /* partial_inplace */ | |
584 | 0x0, /* src_mask */ | |
585 | 0xfffff, /* dst_mask */ | |
586 | FALSE), /* pcrel_offset */ | |
587 | ||
588 | HOWTO (R_CR16_GLOB_DAT, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 32, /* bitsize */ | |
592 | FALSE, /* pc_relative */ | |
593 | 0, /* bitpos */ | |
594 | complain_overflow_unsigned, /* complain_on_overflow */ | |
595 | bfd_elf_generic_reloc, /* special_function */ | |
596 | "R_CR16_GLOB_DAT", /* name */ | |
597 | FALSE, /* partial_inplace */ | |
598 | 0x0, /* src_mask */ | |
599 | 0xffffffff, /* dst_mask */ | |
7fac7ff4 | 600 | TRUE) /* pcrel_offset */ |
3d3d428f NC |
601 | }; |
602 | ||
99706f30 SR |
603 | |
604 | /* Create the GOT section. */ | |
605 | ||
606 | static bfd_boolean | |
607 | _bfd_cr16_elf_create_got_section (bfd * abfd, struct bfd_link_info * info) | |
608 | { | |
609 | flagword flags; | |
610 | asection * s; | |
611 | struct elf_link_hash_entry * h; | |
612 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); | |
613 | int ptralign; | |
614 | ||
615 | /* This function may be called more than once. */ | |
616 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
617 | return TRUE; | |
618 | ||
619 | switch (bed->s->arch_size) | |
620 | { | |
621 | case 16: | |
622 | ptralign = 1; | |
623 | break; | |
624 | ||
625 | case 32: | |
626 | ptralign = 2; | |
627 | break; | |
628 | ||
629 | default: | |
630 | bfd_set_error (bfd_error_bad_value); | |
631 | return FALSE; | |
632 | } | |
633 | ||
634 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
635 | | SEC_LINKER_CREATED); | |
636 | ||
637 | s = bfd_make_section_with_flags (abfd, ".got", flags); | |
638 | if (s == NULL | |
639 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
640 | return FALSE; | |
641 | ||
642 | if (bed->want_got_plt) | |
643 | { | |
644 | s = bfd_make_section_with_flags (abfd, ".got.plt", flags); | |
645 | if (s == NULL | |
646 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
647 | return FALSE; | |
648 | } | |
649 | ||
650 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
651 | (or .got.plt) section. We don't do this in the linker script | |
652 | because we don't want to define the symbol if we are not creating | |
653 | a global offset table. */ | |
654 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); | |
655 | elf_hash_table (info)->hgot = h; | |
656 | if (h == NULL) | |
657 | return FALSE; | |
658 | ||
659 | /* The first bit of the global offset table is the header. */ | |
660 | s->size += bed->got_header_size; | |
661 | ||
662 | return TRUE; | |
663 | } | |
664 | ||
665 | ||
3d3d428f NC |
666 | /* Retrieve a howto ptr using a BFD reloc_code. */ |
667 | ||
668 | static reloc_howto_type * | |
669 | elf_cr16_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
670 | bfd_reloc_code_real_type code) | |
671 | { | |
672 | unsigned int i; | |
673 | ||
674 | for (i = 0; i < R_CR16_MAX; i++) | |
675 | if (code == cr16_reloc_map[i].bfd_reloc_enum) | |
676 | return &cr16_elf_howto_table[cr16_reloc_map[i].cr16_reloc_type]; | |
677 | ||
678 | _bfd_error_handler ("Unsupported CR16 relocation type: 0x%x\n", code); | |
679 | return NULL; | |
680 | } | |
681 | ||
682 | static reloc_howto_type * | |
683 | elf_cr16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
684 | const char *r_name) | |
685 | { | |
686 | unsigned int i; | |
687 | ||
688 | for (i = 0; ARRAY_SIZE (cr16_elf_howto_table); i++) | |
689 | if (cr16_elf_howto_table[i].name != NULL | |
690 | && strcasecmp (cr16_elf_howto_table[i].name, r_name) == 0) | |
691 | return cr16_elf_howto_table + i; | |
692 | ||
693 | return NULL; | |
694 | } | |
695 | ||
696 | /* Retrieve a howto ptr using an internal relocation entry. */ | |
697 | ||
698 | static void | |
699 | elf_cr16_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, | |
700 | Elf_Internal_Rela *dst) | |
701 | { | |
702 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
703 | ||
704 | BFD_ASSERT (r_type < (unsigned int) R_CR16_MAX); | |
99706f30 SR |
705 | cache_ptr->howto = cr16_elf_howto_table + r_type; |
706 | } | |
707 | ||
708 | /* Look through the relocs for a section during the first phase. | |
709 | Since we don't do .gots or .plts, we just need to consider the | |
710 | virtual table relocs for gc. */ | |
711 | ||
712 | static bfd_boolean | |
713 | cr16_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, | |
714 | const Elf_Internal_Rela *relocs) | |
715 | { | |
716 | Elf_Internal_Shdr *symtab_hdr; | |
717 | Elf_Internal_Sym * isymbuf = NULL; | |
718 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
719 | const Elf_Internal_Rela *rel; | |
720 | const Elf_Internal_Rela *rel_end; | |
721 | bfd * dynobj; | |
722 | bfd_vma * local_got_offsets; | |
723 | asection * sgot; | |
724 | asection * srelgot; | |
725 | ||
726 | sgot = NULL; | |
727 | srelgot = NULL; | |
728 | bfd_boolean result = FALSE; | |
729 | ||
730 | if (info->relocatable) | |
731 | return TRUE; | |
732 | ||
733 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
734 | sym_hashes = elf_sym_hashes (abfd); | |
735 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); | |
736 | if (!elf_bad_symtab (abfd)) | |
737 | sym_hashes_end -= symtab_hdr->sh_info; | |
738 | ||
739 | dynobj = elf_hash_table (info)->dynobj; | |
740 | local_got_offsets = elf_local_got_offsets (abfd); | |
741 | rel_end = relocs + sec->reloc_count; | |
742 | for (rel = relocs; rel < rel_end; rel++) | |
743 | { | |
744 | struct elf_link_hash_entry *h; | |
745 | unsigned long r_symndx; | |
746 | ||
747 | r_symndx = ELF32_R_SYM (rel->r_info); | |
748 | if (r_symndx < symtab_hdr->sh_info) | |
749 | h = NULL; | |
750 | else | |
751 | { | |
752 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
753 | while (h->root.type == bfd_link_hash_indirect | |
754 | || h->root.type == bfd_link_hash_warning) | |
755 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
756 | } | |
757 | ||
758 | /* Some relocs require a global offset table. */ | |
759 | if (dynobj == NULL) | |
760 | { | |
761 | switch (ELF32_R_TYPE (rel->r_info)) | |
762 | { | |
763 | case R_CR16_GOT_REGREL20: | |
764 | case R_CR16_GOTC_REGREL20: | |
765 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
766 | if (! _bfd_cr16_elf_create_got_section (dynobj, info)) | |
767 | goto fail; | |
768 | break; | |
769 | ||
770 | default: | |
771 | break; | |
772 | } | |
773 | } | |
774 | ||
775 | switch (ELF32_R_TYPE (rel->r_info)) | |
776 | { | |
777 | case R_CR16_GOT_REGREL20: | |
778 | case R_CR16_GOTC_REGREL20: | |
779 | /* This symbol requires a global offset table entry. */ | |
780 | ||
781 | if (sgot == NULL) | |
782 | { | |
783 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
784 | BFD_ASSERT (sgot != NULL); | |
785 | } | |
786 | ||
787 | if (srelgot == NULL | |
788 | && (h != NULL || info->executable)) | |
789 | { | |
790 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
791 | if (srelgot == NULL) | |
792 | { | |
793 | srelgot = bfd_make_section_with_flags (dynobj, | |
794 | ".rela.got", | |
795 | (SEC_ALLOC | |
796 | | SEC_LOAD | |
797 | | SEC_HAS_CONTENTS | |
798 | | SEC_IN_MEMORY | |
799 | | SEC_LINKER_CREATED | |
800 | | SEC_READONLY)); | |
801 | if (srelgot == NULL | |
802 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
803 | goto fail; | |
804 | } | |
805 | } | |
806 | ||
807 | if (h != NULL) | |
808 | { | |
809 | if (h->got.offset != (bfd_vma) -1) | |
810 | /* We have already allocated space in the .got. */ | |
811 | break; | |
812 | ||
813 | h->got.offset = sgot->size; | |
814 | ||
815 | /* Make sure this symbol is output as a dynamic symbol. */ | |
816 | if (h->dynindx == -1) | |
817 | { | |
818 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
819 | goto fail; | |
820 | } | |
821 | ||
822 | srelgot->size += sizeof (Elf32_External_Rela); | |
823 | } | |
824 | else | |
825 | { | |
826 | /* This is a global offset table entry for a local | |
827 | symbol. */ | |
828 | if (local_got_offsets == NULL) | |
829 | { | |
830 | size_t size; | |
831 | unsigned int i; | |
832 | ||
833 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
834 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
835 | ||
836 | if (local_got_offsets == NULL) | |
837 | goto fail; | |
838 | ||
839 | elf_local_got_offsets (abfd) = local_got_offsets; | |
840 | ||
841 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
842 | local_got_offsets[i] = (bfd_vma) -1; | |
843 | } | |
844 | ||
845 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
846 | /* We have already allocated space in the .got. */ | |
847 | break; | |
848 | ||
849 | local_got_offsets[r_symndx] = sgot->size; | |
850 | ||
851 | if (info->executable) | |
852 | /* If we are generating a shared object, we need to | |
853 | output a R_CR16_RELATIVE reloc so that the dynamic | |
854 | linker can adjust this GOT entry. */ | |
855 | srelgot->size += sizeof (Elf32_External_Rela); | |
856 | } | |
857 | ||
858 | sgot->size += 4; | |
859 | break; | |
860 | ||
861 | } | |
862 | } | |
863 | ||
864 | result = TRUE; | |
865 | fail: | |
866 | if (isymbuf != NULL) | |
867 | free (isymbuf); | |
868 | ||
869 | return result; | |
3d3d428f NC |
870 | } |
871 | ||
872 | /* Perform a relocation as part of a final link. */ | |
873 | ||
874 | static bfd_reloc_status_type | |
875 | cr16_elf_final_link_relocate (reloc_howto_type *howto, | |
7fac7ff4 | 876 | bfd *input_bfd, |
3d3d428f NC |
877 | bfd *output_bfd ATTRIBUTE_UNUSED, |
878 | asection *input_section, | |
7fac7ff4 | 879 | bfd_byte *contents, |
3d3d428f | 880 | bfd_vma offset, |
7fac7ff4 NC |
881 | bfd_vma Rvalue, |
882 | bfd_vma addend, | |
99706f30 SR |
883 | struct elf_link_hash_entry * h, |
884 | unsigned long symndx ATTRIBUTE_UNUSED, | |
3d3d428f NC |
885 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
886 | asection *sec ATTRIBUTE_UNUSED, | |
887 | int is_local ATTRIBUTE_UNUSED) | |
888 | { | |
889 | unsigned short r_type = howto->type; | |
890 | bfd_byte *hit_data = contents + offset; | |
891 | bfd_vma reloc_bits, check, Rvalue1; | |
99706f30 SR |
892 | bfd * dynobj; |
893 | bfd_vma * local_got_offsets; | |
99706f30 SR |
894 | |
895 | dynobj = elf_hash_table (info)->dynobj; | |
896 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
897 | ||
3d3d428f NC |
898 | switch (r_type) |
899 | { | |
900 | case R_CR16_IMM4: | |
7fac7ff4 NC |
901 | case R_CR16_IMM20: |
902 | case R_CR16_ABS20: | |
903 | break; | |
904 | ||
3d3d428f NC |
905 | case R_CR16_IMM8: |
906 | case R_CR16_IMM16: | |
3d3d428f NC |
907 | case R_CR16_IMM32: |
908 | case R_CR16_IMM32a: | |
909 | case R_CR16_REGREL4: | |
910 | case R_CR16_REGREL4a: | |
911 | case R_CR16_REGREL14: | |
912 | case R_CR16_REGREL14a: | |
913 | case R_CR16_REGREL16: | |
914 | case R_CR16_REGREL20: | |
99706f30 SR |
915 | case R_CR16_REGREL20a: |
916 | case R_CR16_GOT_REGREL20: | |
917 | case R_CR16_GOTC_REGREL20: | |
3d3d428f NC |
918 | case R_CR16_ABS24: |
919 | case R_CR16_DISP16: | |
920 | case R_CR16_DISP24: | |
921 | /* 'hit_data' is relative to the start of the instruction, not the | |
922 | relocation offset. Advance it to account for the exact offset. */ | |
923 | hit_data += 2; | |
924 | break; | |
925 | ||
926 | case R_CR16_NONE: | |
927 | return bfd_reloc_ok; | |
928 | break; | |
929 | ||
930 | case R_CR16_DISP4: | |
7fac7ff4 | 931 | if (is_local) |
99706f30 | 932 | Rvalue += -1; |
7fac7ff4 NC |
933 | break; |
934 | ||
3d3d428f NC |
935 | case R_CR16_DISP8: |
936 | case R_CR16_DISP24a: | |
7fac7ff4 | 937 | if (is_local) |
99706f30 | 938 | Rvalue -= -1; |
7fac7ff4 NC |
939 | break; |
940 | ||
941 | case R_CR16_SWITCH8: | |
942 | case R_CR16_SWITCH16: | |
943 | case R_CR16_SWITCH32: | |
3d3d428f NC |
944 | /* We only care about the addend, where the difference between |
945 | expressions is kept. */ | |
7fac7ff4 | 946 | Rvalue = 0; |
99706f30 | 947 | |
3d3d428f NC |
948 | default: |
949 | break; | |
950 | } | |
951 | ||
952 | if (howto->pc_relative) | |
953 | { | |
954 | /* Subtract the address of the section containing the location. */ | |
955 | Rvalue -= (input_section->output_section->vma | |
956 | + input_section->output_offset); | |
957 | /* Subtract the position of the location within the section. */ | |
958 | Rvalue -= offset; | |
959 | } | |
960 | ||
961 | /* Add in supplied addend. */ | |
962 | Rvalue += addend; | |
963 | ||
964 | /* Complain if the bitfield overflows, whether it is considered | |
965 | as signed or unsigned. */ | |
966 | check = Rvalue >> howto->rightshift; | |
967 | ||
968 | /* Assumes two's complement. This expression avoids | |
969 | overflow if howto->bitsize is the number of bits in | |
970 | bfd_vma. */ | |
971 | reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1; | |
972 | ||
99706f30 SR |
973 | /* For GOT and GOTC relocs no boundary checks applied. */ |
974 | if (!((r_type == R_CR16_GOT_REGREL20) | |
975 | || (r_type == R_CR16_GOTC_REGREL20))) | |
3d3d428f | 976 | { |
99706f30 SR |
977 | if (((bfd_vma) check & ~reloc_bits) != 0 |
978 | && (((bfd_vma) check & ~reloc_bits) | |
979 | != (-(bfd_vma) 1 & ~reloc_bits))) | |
3d3d428f | 980 | { |
99706f30 SR |
981 | /* The above right shift is incorrect for a signed |
982 | value. See if turning on the upper bits fixes the | |
983 | overflow. */ | |
984 | if (howto->rightshift && (bfd_signed_vma) Rvalue < 0) | |
985 | { | |
986 | check |= ((bfd_vma) - 1 | |
987 | & ~((bfd_vma) - 1 | |
988 | >> howto->rightshift)); | |
3d3d428f | 989 | |
99706f30 SR |
990 | if (((bfd_vma) check & ~reloc_bits) |
991 | != (-(bfd_vma) 1 & ~reloc_bits)) | |
992 | return bfd_reloc_overflow; | |
993 | } | |
994 | else | |
995 | return bfd_reloc_overflow; | |
3d3d428f | 996 | } |
3d3d428f | 997 | |
99706f30 SR |
998 | /* Drop unwanted bits from the value we are relocating to. */ |
999 | Rvalue >>= (bfd_vma) howto->rightshift; | |
3d3d428f | 1000 | |
99706f30 SR |
1001 | /* Apply dst_mask to select only relocatable part of the insn. */ |
1002 | Rvalue &= howto->dst_mask; | |
1003 | } | |
3d3d428f NC |
1004 | |
1005 | switch (howto->size) | |
1006 | { | |
1007 | case 0: | |
7fac7ff4 | 1008 | if (r_type == R_CR16_DISP8) |
3d3d428f NC |
1009 | { |
1010 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
1011 | Rvalue = ((Rvalue1 & 0xf000) | ((Rvalue << 4) & 0xf00) | |
7fac7ff4 NC |
1012 | | (Rvalue1 & 0x00f0) | (Rvalue & 0xf)); |
1013 | bfd_put_16 (input_bfd, Rvalue, hit_data); | |
1014 | } | |
1015 | else if (r_type == R_CR16_IMM4) | |
1016 | { | |
1017 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
1018 | Rvalue = (((Rvalue1 & 0xff) << 8) | ((Rvalue << 4) & 0xf0) | |
1019 | | ((Rvalue1 & 0x0f00) >> 8)); | |
1020 | bfd_put_16 (input_bfd, Rvalue, hit_data); | |
1021 | } | |
1022 | else if (r_type == R_CR16_DISP4) | |
1023 | { | |
1024 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
1025 | Rvalue = (Rvalue1 | ((Rvalue & 0xf) << 4)); | |
1026 | bfd_put_16 (input_bfd, Rvalue, hit_data); | |
1027 | } | |
99706f30 | 1028 | else |
7fac7ff4 NC |
1029 | { |
1030 | bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data); | |
3d3d428f NC |
1031 | } |
1032 | break; | |
1033 | ||
1034 | case 1: | |
1035 | if (r_type == R_CR16_DISP16) | |
1036 | { | |
1037 | Rvalue |= (bfd_get_16 (input_bfd, hit_data)); | |
1038 | Rvalue = ((Rvalue & 0xfffe) | ((Rvalue >> 16) & 0x1)); | |
3d3d428f | 1039 | } |
99706f30 SR |
1040 | if (r_type == R_CR16_IMM16) |
1041 | { | |
1042 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
1043 | ||
1044 | /* Add or subtract the offset value. */ | |
1045 | if (Rvalue1 & 0x8000) | |
1046 | Rvalue -= (~Rvalue1 + 1) & 0xffff; | |
1047 | else | |
1048 | Rvalue += Rvalue1; | |
1049 | ||
1050 | /* Check for range. */ | |
1051 | if ((long) Rvalue > 0xffff || (long) Rvalue < 0x0) | |
1052 | return bfd_reloc_overflow; | |
1053 | } | |
7fac7ff4 | 1054 | |
99706f30 | 1055 | bfd_put_16 (input_bfd, Rvalue, hit_data); |
3d3d428f NC |
1056 | break; |
1057 | ||
1058 | case 2: | |
7fac7ff4 | 1059 | if ((r_type == R_CR16_ABS20) || (r_type == R_CR16_IMM20)) |
3d3d428f | 1060 | { |
99706f30 SR |
1061 | Rvalue1 = (bfd_get_16 (input_bfd, hit_data + 2) |
1062 | | (((bfd_get_16 (input_bfd, hit_data) & 0xf) <<16))); | |
1063 | ||
1064 | /* Add or subtract the offset value. */ | |
1065 | if (Rvalue1 & 0x80000) | |
1066 | Rvalue -= (~Rvalue1 + 1) & 0xfffff; | |
1067 | else | |
1068 | Rvalue += Rvalue1; | |
1069 | ||
1070 | /* Check for range. */ | |
1071 | if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0) | |
1072 | return bfd_reloc_overflow; | |
1073 | ||
1074 | bfd_put_16 (input_bfd, ((bfd_get_16 (input_bfd, hit_data) & 0xfff0) | |
1075 | | ((Rvalue >> 16) & 0xf)), hit_data); | |
1076 | bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); | |
1077 | } | |
1078 | else if (r_type == R_CR16_GOT_REGREL20) | |
1079 | { | |
1080 | asection * sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1081 | ||
1082 | if (h != NULL) | |
1083 | { | |
1084 | bfd_vma off; | |
1085 | ||
1086 | off = h->got.offset; | |
1087 | BFD_ASSERT (off != (bfd_vma) -1); | |
1088 | ||
1089 | if (! elf_hash_table (info)->dynamic_sections_created | |
1090 | || SYMBOL_REFERENCES_LOCAL (info, h)) | |
1091 | /* This is actually a static link, or it is a | |
1092 | -Bsymbolic link and the symbol is defined | |
1093 | locally, or the symbol was forced to be local | |
1094 | because of a version file. We must initialize | |
1095 | this entry in the global offset table. | |
1096 | When doing a dynamic link, we create a .rela.got | |
1097 | relocation entry to initialize the value. This | |
1098 | is done in the finish_dynamic_symbol routine. */ | |
1099 | bfd_put_32 (output_bfd, Rvalue, sgot->contents + off); | |
1100 | ||
1101 | Rvalue = sgot->output_offset + off; | |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | bfd_vma off; | |
1106 | ||
1107 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1108 | bfd_put_32 (output_bfd,Rvalue, sgot->contents + off); | |
1109 | ||
1110 | Rvalue = sgot->output_offset + off; | |
1111 | } | |
1112 | ||
1113 | Rvalue += addend; | |
1114 | ||
1115 | /* REVISIT: if ((long) Rvalue > 0xffffff || | |
1116 | (long) Rvalue < -0x800000). */ | |
1117 | if ((long) Rvalue > 0xffffff || (long) Rvalue < 0) | |
1118 | return bfd_reloc_overflow; | |
1119 | ||
1120 | ||
1121 | bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data)) | |
1122 | | (((Rvalue >> 16) & 0xf) << 8), hit_data); | |
1123 | bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); | |
1124 | ||
1125 | } | |
1126 | else if (r_type == R_CR16_GOTC_REGREL20) | |
1127 | { | |
1128 | asection * sgot; | |
1129 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1130 | ||
1131 | if (h != NULL) | |
1132 | { | |
1133 | bfd_vma off; | |
1134 | ||
1135 | off = h->got.offset; | |
1136 | BFD_ASSERT (off != (bfd_vma) -1); | |
1137 | ||
1138 | Rvalue >>=1; /* For code symbols. */ | |
1139 | ||
1140 | if (! elf_hash_table (info)->dynamic_sections_created | |
1141 | || SYMBOL_REFERENCES_LOCAL (info, h)) | |
1142 | /* This is actually a static link, or it is a | |
1143 | -Bsymbolic link and the symbol is defined | |
1144 | locally, or the symbol was forced to be local | |
1145 | because of a version file. We must initialize | |
1146 | this entry in the global offset table. | |
1147 | When doing a dynamic link, we create a .rela.got | |
1148 | relocation entry to initialize the value. This | |
1149 | is done in the finish_dynamic_symbol routine. */ | |
1150 | bfd_put_32 (output_bfd, Rvalue, sgot->contents + off); | |
1151 | ||
1152 | Rvalue = sgot->output_offset + off; | |
1153 | } | |
1154 | else | |
1155 | { | |
1156 | bfd_vma off; | |
1157 | ||
1158 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1159 | Rvalue >>= 1; | |
1160 | bfd_put_32 (output_bfd,Rvalue, sgot->contents + off); | |
1161 | Rvalue = sgot->output_offset + off; | |
1162 | } | |
1163 | ||
1164 | Rvalue += addend; | |
1165 | ||
1166 | /* Check if any value in DISP. */ | |
1167 | Rvalue1 =((bfd_get_32 (input_bfd, hit_data) >>16) | |
1168 | | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16)); | |
1169 | ||
1170 | /* Add or subtract the offset value. */ | |
1171 | if (Rvalue1 & 0x80000) | |
1172 | Rvalue -= (~Rvalue1 + 1) & 0xfffff; | |
1173 | else | |
1174 | Rvalue += Rvalue1; | |
1175 | ||
1176 | /* Check for range. */ | |
1177 | /* REVISIT: if ((long) Rvalue > 0xffffff | |
1178 | || (long) Rvalue < -0x800000). */ | |
1179 | if ((long) Rvalue > 0xffffff || (long) Rvalue < 0) | |
1180 | return bfd_reloc_overflow; | |
1181 | ||
7fac7ff4 | 1182 | bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data)) |
99706f30 | 1183 | | (((Rvalue >> 16) & 0xf) << 8), hit_data); |
7fac7ff4 | 1184 | bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); |
3d3d428f | 1185 | } |
99706f30 | 1186 | else |
3d3d428f | 1187 | { |
99706f30 SR |
1188 | if (r_type == R_CR16_ABS24) |
1189 | { | |
1190 | Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16) | |
1191 | | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16) | |
1192 | | (((bfd_get_32 (input_bfd, hit_data) & 0xf) <<20))); | |
1193 | ||
1194 | /* Add or subtract the offset value. */ | |
1195 | if (Rvalue1 & 0x800000) | |
1196 | Rvalue -= (~Rvalue1 + 1) & 0xffffff; | |
1197 | else | |
1198 | Rvalue += Rvalue1; | |
1199 | ||
1200 | /* Check for Range. */ | |
1201 | if ((long) Rvalue > 0xffffff || (long) Rvalue < 0x0) | |
1202 | return bfd_reloc_overflow; | |
1203 | ||
1204 | Rvalue = ((((Rvalue >> 20) & 0xf) | (((Rvalue >> 16) & 0xf)<<8) | |
1205 | | (bfd_get_32 (input_bfd, hit_data) & 0xf0f0)) | |
1206 | | ((Rvalue & 0xffff) << 16)); | |
1207 | } | |
1208 | else if (r_type == R_CR16_DISP24) | |
1209 | { | |
1210 | Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8) | |
1211 | | (bfd_get_16 (input_bfd, hit_data))) | |
1212 | | (((Rvalue & 0xfffe) | ((Rvalue >> 24) & 0x1)) << 16)); | |
1213 | } | |
1214 | else if ((r_type == R_CR16_IMM32) || (r_type == R_CR16_IMM32a)) | |
1215 | { | |
1216 | Rvalue1 =((((bfd_get_32 (input_bfd, hit_data)) >> 16) &0xffff) | |
1217 | | (((bfd_get_32 (input_bfd, hit_data)) &0xffff)) << 16); | |
1218 | ||
1219 | /* Add or subtract the offset value. */ | |
1220 | if (Rvalue1 & 0x80000000) | |
1221 | Rvalue -= (~Rvalue1 + 1) & 0xffffffff; | |
1222 | else | |
1223 | Rvalue += Rvalue1; | |
1224 | ||
1225 | /* Check for range. */ | |
1226 | if (Rvalue > 0xffffffff || (long) Rvalue < 0x0) | |
1227 | return bfd_reloc_overflow; | |
1228 | ||
1229 | Rvalue = (((Rvalue >> 16)& 0xffff) | (Rvalue & 0xffff) << 16); | |
1230 | } | |
1231 | else if (r_type == R_CR16_DISP24a) | |
1232 | { | |
1233 | Rvalue = (((Rvalue & 0xfffffe) | (Rvalue >> 23))); | |
1234 | Rvalue = ((Rvalue >> 16) & 0xff) | ((Rvalue & 0xffff) << 16) | |
1235 | | (bfd_get_32 (input_bfd, hit_data)); | |
1236 | } | |
1237 | else if ((r_type == R_CR16_REGREL20) | |
1238 | || (r_type == R_CR16_REGREL20a)) | |
1239 | { | |
1240 | Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16) | |
1241 | | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16)); | |
1242 | /* Add or subtract the offset value. */ | |
1243 | if (Rvalue1 & 0x80000) | |
1244 | Rvalue -= (~Rvalue1 + 1) & 0xfffff; | |
1245 | else | |
1246 | Rvalue += Rvalue1; | |
1247 | ||
1248 | /* Check for range. */ | |
1249 | if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0) | |
1250 | return bfd_reloc_overflow; | |
3d3d428f | 1251 | |
99706f30 SR |
1252 | Rvalue = (((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8) |
1253 | | ((Rvalue & 0xffff) << 16))) | |
1254 | | (bfd_get_32 (input_bfd, hit_data) & 0xf0ff)); | |
1255 | ||
1256 | } | |
86514226 SR |
1257 | else if (r_type == R_CR16_NUM32) |
1258 | { | |
1259 | Rvalue1 = (bfd_get_32 (input_bfd, hit_data)); | |
1260 | ||
1261 | /* Add or subtract the offset value */ | |
1262 | if (Rvalue1 & 0x80000000) | |
1263 | Rvalue -= (~Rvalue1 + 1) & 0xffffffff; | |
1264 | else | |
1265 | Rvalue += Rvalue1; | |
1266 | ||
1267 | /* Check for Ranga */ | |
1268 | if (Rvalue > 0xffffffff) | |
1269 | return bfd_reloc_overflow; | |
1270 | } | |
1271 | ||
3d3d428f NC |
1272 | bfd_put_32 (input_bfd, Rvalue, hit_data); |
1273 | } | |
7fac7ff4 | 1274 | break; |
3d3d428f NC |
1275 | |
1276 | default: | |
1277 | return bfd_reloc_notsupported; | |
1278 | } | |
1279 | ||
1280 | return bfd_reloc_ok; | |
1281 | } | |
1282 | ||
1283 | /* Delete some bytes from a section while relaxing. */ | |
1284 | ||
1285 | static bfd_boolean | |
1286 | elf32_cr16_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, | |
1287 | asection *sec, bfd_vma addr, int count) | |
1288 | { | |
1289 | Elf_Internal_Shdr *symtab_hdr; | |
1290 | unsigned int sec_shndx; | |
1291 | bfd_byte *contents; | |
1292 | Elf_Internal_Rela *irel, *irelend; | |
1293 | Elf_Internal_Rela *irelalign; | |
1294 | bfd_vma toaddr; | |
1295 | Elf_Internal_Sym *isym; | |
1296 | Elf_Internal_Sym *isymend; | |
1297 | struct elf_link_hash_entry **sym_hashes; | |
1298 | struct elf_link_hash_entry **end_hashes; | |
1299 | struct elf_link_hash_entry **start_hashes; | |
1300 | unsigned int symcount; | |
1301 | ||
1302 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1303 | ||
1304 | contents = elf_section_data (sec)->this_hdr.contents; | |
1305 | ||
1306 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
1307 | power larger than the number of bytes we are deleting. */ | |
1308 | irelalign = NULL; | |
1309 | toaddr = sec->size; | |
1310 | ||
1311 | irel = elf_section_data (sec)->relocs; | |
1312 | irelend = irel + sec->reloc_count; | |
1313 | ||
1314 | /* Actually delete the bytes. */ | |
1315 | memmove (contents + addr, contents + addr + count, | |
1316 | (size_t) (toaddr - addr - count)); | |
1317 | sec->size -= count; | |
1318 | ||
1319 | /* Adjust all the relocs. */ | |
1320 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1321 | /* Get the new reloc address. */ | |
1322 | if ((irel->r_offset > addr && irel->r_offset < toaddr)) | |
7fac7ff4 | 1323 | irel->r_offset -= count; |
3d3d428f NC |
1324 | |
1325 | /* Adjust the local symbols defined in this section. */ | |
1326 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1327 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1328 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1329 | { | |
1330 | if (isym->st_shndx == sec_shndx | |
1331 | && isym->st_value > addr | |
1332 | && isym->st_value < toaddr) | |
1333 | { | |
1334 | /* Adjust the addend of SWITCH relocations in this section, | |
1335 | which reference this local symbol. */ | |
99706f30 | 1336 | #if 0 |
3d3d428f NC |
1337 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
1338 | { | |
1339 | unsigned long r_symndx; | |
1340 | Elf_Internal_Sym *rsym; | |
1341 | bfd_vma addsym, subsym; | |
1342 | ||
7fac7ff4 NC |
1343 | /* Skip if not a SWITCH relocation. */ |
1344 | if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH8 | |
99706f30 SR |
1345 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH16 |
1346 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH32) | |
1347 | continue; | |
1348 | ||
3d3d428f NC |
1349 | r_symndx = ELF32_R_SYM (irel->r_info); |
1350 | rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx; | |
1351 | ||
1352 | /* Skip if not the local adjusted symbol. */ | |
1353 | if (rsym != isym) | |
1354 | continue; | |
1355 | ||
1356 | addsym = isym->st_value; | |
1357 | subsym = addsym - irel->r_addend; | |
1358 | ||
1359 | /* Fix the addend only when -->> (addsym > addr >= subsym). */ | |
1360 | if (subsym <= addr) | |
1361 | irel->r_addend -= count; | |
1362 | else | |
1363 | continue; | |
1364 | } | |
99706f30 | 1365 | #endif |
3d3d428f NC |
1366 | |
1367 | isym->st_value -= count; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | /* Now adjust the global symbols defined in this section. */ | |
1372 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1373 | - symtab_hdr->sh_info); | |
1374 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
1375 | end_hashes = sym_hashes + symcount; | |
1376 | ||
1377 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1378 | { | |
1379 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1380 | ||
1381 | /* The '--wrap SYMBOL' option is causing a pain when the object file, | |
1382 | containing the definition of __wrap_SYMBOL, includes a direct | |
1383 | call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference | |
1384 | the same symbol (which is __wrap_SYMBOL), but still exist as two | |
1385 | different symbols in 'sym_hashes', we don't want to adjust | |
1386 | the global symbol __wrap_SYMBOL twice. | |
1387 | This check is only relevant when symbols are being wrapped. */ | |
1388 | if (link_info->wrap_hash != NULL) | |
1389 | { | |
1390 | struct elf_link_hash_entry **cur_sym_hashes; | |
1391 | ||
1392 | /* Loop only over the symbols whom been already checked. */ | |
1393 | for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes; | |
1394 | cur_sym_hashes++) | |
7fac7ff4 NC |
1395 | /* If the current symbol is identical to 'sym_hash', that means |
1396 | the symbol was already adjusted (or at least checked). */ | |
1397 | if (*cur_sym_hashes == sym_hash) | |
1398 | break; | |
3d3d428f NC |
1399 | |
1400 | /* Don't adjust the symbol again. */ | |
1401 | if (cur_sym_hashes < sym_hashes) | |
1402 | continue; | |
1403 | } | |
1404 | ||
1405 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1406 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1407 | && sym_hash->root.u.def.section == sec | |
1408 | && sym_hash->root.u.def.value > addr | |
1409 | && sym_hash->root.u.def.value < toaddr) | |
1410 | sym_hash->root.u.def.value -= count; | |
1411 | } | |
1412 | ||
1413 | return TRUE; | |
1414 | } | |
1415 | ||
1416 | /* Relocate a CR16 ELF section. */ | |
1417 | ||
1418 | static bfd_boolean | |
1419 | elf32_cr16_relocate_section (bfd *output_bfd, struct bfd_link_info *info, | |
99706f30 SR |
1420 | bfd *input_bfd, asection *input_section, |
1421 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
1422 | Elf_Internal_Sym *local_syms, | |
1423 | asection **local_sections) | |
3d3d428f NC |
1424 | { |
1425 | Elf_Internal_Shdr *symtab_hdr; | |
1426 | struct elf_link_hash_entry **sym_hashes; | |
1427 | Elf_Internal_Rela *rel, *relend; | |
1428 | ||
3d3d428f NC |
1429 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1430 | sym_hashes = elf_sym_hashes (input_bfd); | |
1431 | ||
1432 | rel = relocs; | |
1433 | relend = relocs + input_section->reloc_count; | |
1434 | for (; rel < relend; rel++) | |
1435 | { | |
1436 | int r_type; | |
1437 | reloc_howto_type *howto; | |
1438 | unsigned long r_symndx; | |
1439 | Elf_Internal_Sym *sym; | |
1440 | asection *sec; | |
1441 | struct elf_link_hash_entry *h; | |
1442 | bfd_vma relocation; | |
1443 | bfd_reloc_status_type r; | |
1444 | ||
1445 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1446 | r_type = ELF32_R_TYPE (rel->r_info); | |
1447 | howto = cr16_elf_howto_table + (r_type); | |
1448 | ||
1449 | h = NULL; | |
1450 | sym = NULL; | |
1451 | sec = NULL; | |
1452 | if (r_symndx < symtab_hdr->sh_info) | |
1453 | { | |
1454 | sym = local_syms + r_symndx; | |
1455 | sec = local_sections[r_symndx]; | |
1456 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
1457 | } | |
1458 | else | |
1459 | { | |
1460 | bfd_boolean unresolved_reloc, warned; | |
1461 | ||
1462 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
1463 | r_symndx, symtab_hdr, sym_hashes, | |
1464 | h, sec, relocation, | |
1465 | unresolved_reloc, warned); | |
1466 | } | |
1467 | ||
1004c3e1 SR |
1468 | if (sec != NULL && elf_discarded_section (sec)) |
1469 | { | |
1470 | /* For relocs against symbols from removed linkonce sections, | |
1471 | or sections discarded by a linker script, we just want the | |
1472 | section contents zeroed. Avoid any special processing. */ | |
1473 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1474 | rel->r_info = 0; | |
1475 | rel->r_addend = 0; | |
1476 | continue; | |
1477 | } | |
1478 | ||
1479 | if (info->relocatable) | |
1480 | continue; | |
1481 | ||
3d3d428f NC |
1482 | r = cr16_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1483 | input_section, | |
1484 | contents, rel->r_offset, | |
1485 | relocation, rel->r_addend, | |
99706f30 SR |
1486 | (struct elf_link_hash_entry *) h, |
1487 | r_symndx, | |
3d3d428f NC |
1488 | info, sec, h == NULL); |
1489 | ||
1490 | if (r != bfd_reloc_ok) | |
1491 | { | |
1492 | const char *name; | |
1493 | const char *msg = NULL; | |
1494 | ||
1495 | if (h != NULL) | |
1496 | name = h->root.root.string; | |
1497 | else | |
1498 | { | |
1499 | name = (bfd_elf_string_from_elf_section | |
1500 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1501 | if (name == NULL || *name == '\0') | |
1502 | name = bfd_section_name (input_bfd, sec); | |
1503 | } | |
1504 | ||
1505 | switch (r) | |
1506 | { | |
1507 | case bfd_reloc_overflow: | |
1508 | if (!((*info->callbacks->reloc_overflow) | |
1509 | (info, (h ? &h->root : NULL), name, howto->name, | |
1510 | (bfd_vma) 0, input_bfd, input_section, | |
1511 | rel->r_offset))) | |
99706f30 | 1512 | return FALSE; |
3d3d428f NC |
1513 | break; |
1514 | ||
1515 | case bfd_reloc_undefined: | |
1516 | if (!((*info->callbacks->undefined_symbol) | |
1517 | (info, name, input_bfd, input_section, | |
1518 | rel->r_offset, TRUE))) | |
1519 | return FALSE; | |
1520 | break; | |
1521 | ||
1522 | case bfd_reloc_outofrange: | |
1523 | msg = _("internal error: out of range error"); | |
1524 | goto common_error; | |
1525 | ||
1526 | case bfd_reloc_notsupported: | |
1527 | msg = _("internal error: unsupported relocation error"); | |
1528 | goto common_error; | |
1529 | ||
1530 | case bfd_reloc_dangerous: | |
1531 | msg = _("internal error: dangerous error"); | |
1532 | goto common_error; | |
1533 | ||
1534 | default: | |
1535 | msg = _("internal error: unknown error"); | |
1536 | /* Fall through. */ | |
1537 | ||
1538 | common_error: | |
1539 | if (!((*info->callbacks->warning) | |
1540 | (info, msg, name, input_bfd, input_section, | |
1541 | rel->r_offset))) | |
1542 | return FALSE; | |
1543 | break; | |
1544 | } | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | return TRUE; | |
1549 | } | |
1550 | ||
1551 | /* This is a version of bfd_generic_get_relocated_section_contents | |
1552 | which uses elf32_cr16_relocate_section. */ | |
1553 | ||
1554 | static bfd_byte * | |
1555 | elf32_cr16_get_relocated_section_contents (bfd *output_bfd, | |
1556 | struct bfd_link_info *link_info, | |
1557 | struct bfd_link_order *link_order, | |
1558 | bfd_byte *data, | |
1559 | bfd_boolean relocatable, | |
1560 | asymbol **symbols) | |
1561 | { | |
1562 | Elf_Internal_Shdr *symtab_hdr; | |
1563 | asection *input_section = link_order->u.indirect.section; | |
1564 | bfd *input_bfd = input_section->owner; | |
1565 | asection **sections = NULL; | |
1566 | Elf_Internal_Rela *internal_relocs = NULL; | |
1567 | Elf_Internal_Sym *isymbuf = NULL; | |
1568 | ||
1569 | /* We only need to handle the case of relaxing, or of having a | |
1570 | particular set of section contents, specially. */ | |
1571 | if (relocatable | |
1572 | || elf_section_data (input_section)->this_hdr.contents == NULL) | |
1573 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
1574 | link_order, data, | |
1575 | relocatable, | |
1576 | symbols); | |
1577 | ||
1578 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1579 | ||
1580 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
1581 | (size_t) input_section->size); | |
1582 | ||
1583 | if ((input_section->flags & SEC_RELOC) != 0 | |
1584 | && input_section->reloc_count > 0) | |
1585 | { | |
1586 | Elf_Internal_Sym *isym; | |
1587 | Elf_Internal_Sym *isymend; | |
1588 | asection **secpp; | |
1589 | bfd_size_type amt; | |
1590 | ||
1591 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, | |
7fac7ff4 | 1592 | NULL, NULL, FALSE); |
3d3d428f NC |
1593 | if (internal_relocs == NULL) |
1594 | goto error_return; | |
1595 | ||
1596 | if (symtab_hdr->sh_info != 0) | |
1597 | { | |
1598 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1599 | if (isymbuf == NULL) | |
1600 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1601 | symtab_hdr->sh_info, 0, | |
1602 | NULL, NULL, NULL); | |
1603 | if (isymbuf == NULL) | |
1604 | goto error_return; | |
1605 | } | |
1606 | ||
1607 | amt = symtab_hdr->sh_info; | |
1608 | amt *= sizeof (asection *); | |
1609 | sections = bfd_malloc (amt); | |
1610 | if (sections == NULL && amt != 0) | |
1611 | goto error_return; | |
1612 | ||
1613 | isymend = isymbuf + symtab_hdr->sh_info; | |
1614 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
1615 | { | |
1616 | asection *isec; | |
1617 | ||
1618 | if (isym->st_shndx == SHN_UNDEF) | |
1619 | isec = bfd_und_section_ptr; | |
1620 | else if (isym->st_shndx == SHN_ABS) | |
1621 | isec = bfd_abs_section_ptr; | |
1622 | else if (isym->st_shndx == SHN_COMMON) | |
1623 | isec = bfd_com_section_ptr; | |
1624 | else | |
1625 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); | |
1626 | ||
1627 | *secpp = isec; | |
1628 | } | |
1629 | ||
1630 | if (! elf32_cr16_relocate_section (output_bfd, link_info, input_bfd, | |
1631 | input_section, data, internal_relocs, | |
1632 | isymbuf, sections)) | |
1633 | goto error_return; | |
1634 | ||
1635 | if (sections != NULL) | |
1636 | free (sections); | |
1637 | if (isymbuf != NULL | |
1638 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1639 | free (isymbuf); | |
1640 | if (elf_section_data (input_section)->relocs != internal_relocs) | |
1641 | free (internal_relocs); | |
1642 | } | |
1643 | ||
1644 | return data; | |
1645 | ||
1646 | error_return: | |
1647 | if (sections != NULL) | |
1648 | free (sections); | |
1649 | if (isymbuf != NULL | |
1650 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1651 | free (isymbuf); | |
1652 | if (internal_relocs != NULL | |
1653 | && elf_section_data (input_section)->relocs != internal_relocs) | |
1654 | free (internal_relocs); | |
1655 | return NULL; | |
1656 | } | |
1657 | ||
99706f30 SR |
1658 | /* Assorted hash table functions. */ |
1659 | ||
1660 | /* Initialize an entry in the link hash table. */ | |
1661 | ||
1662 | /* Create an entry in an CR16 ELF linker hash table. */ | |
1663 | ||
1664 | static struct bfd_hash_entry * | |
1665 | elf32_cr16_link_hash_newfunc (struct bfd_hash_entry *entry, | |
1666 | struct bfd_hash_table *table, | |
1667 | const char *string) | |
1668 | { | |
1669 | struct elf32_cr16_link_hash_entry *ret = | |
1670 | (struct elf32_cr16_link_hash_entry *) entry; | |
1671 | ||
1672 | /* Allocate the structure if it has not already been allocated by a | |
1673 | subclass. */ | |
1674 | if (ret == (struct elf32_cr16_link_hash_entry *) NULL) | |
1675 | ret = ((struct elf32_cr16_link_hash_entry *) | |
1676 | bfd_hash_allocate (table, | |
1677 | sizeof (struct elf32_cr16_link_hash_entry))); | |
1678 | if (ret == (struct elf32_cr16_link_hash_entry *) NULL) | |
1679 | return (struct bfd_hash_entry *) ret; | |
1680 | ||
1681 | /* Call the allocation method of the superclass. */ | |
1682 | ret = ((struct elf32_cr16_link_hash_entry *) | |
1683 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1684 | table, string)); | |
1685 | if (ret != (struct elf32_cr16_link_hash_entry *) NULL) | |
1686 | { | |
1687 | ret->direct_calls = 0; | |
1688 | ret->stack_size = 0; | |
1689 | ret->movm_args = 0; | |
1690 | ret->movm_stack_size = 0; | |
1691 | ret->flags = 0; | |
1692 | ret->value = 0; | |
1693 | } | |
1694 | ||
1695 | return (struct bfd_hash_entry *) ret; | |
1696 | } | |
1697 | ||
1698 | /* Create an cr16 ELF linker hash table. */ | |
1699 | ||
1700 | static struct bfd_link_hash_table * | |
1701 | elf32_cr16_link_hash_table_create (bfd *abfd) | |
1702 | { | |
1703 | struct elf32_cr16_link_hash_table *ret; | |
1704 | bfd_size_type amt = sizeof (struct elf32_cr16_link_hash_table); | |
1705 | ||
1706 | ret = (struct elf32_cr16_link_hash_table *) bfd_malloc (amt); | |
1707 | if (ret == (struct elf32_cr16_link_hash_table *) NULL) | |
1708 | return NULL; | |
1709 | ||
1710 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
1711 | elf32_cr16_link_hash_newfunc, | |
1712 | sizeof (struct elf32_cr16_link_hash_entry))) | |
1713 | { | |
1714 | free (ret); | |
1715 | return NULL; | |
1716 | } | |
1717 | ||
1718 | ret->flags = 0; | |
1719 | amt = sizeof (struct elf_link_hash_table); | |
1720 | ret->static_hash_table | |
1721 | = (struct elf32_cr16_link_hash_table *) bfd_malloc (amt); | |
1722 | if (ret->static_hash_table == NULL) | |
1723 | { | |
1724 | free (ret); | |
1725 | return NULL; | |
1726 | } | |
1727 | ||
1728 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, | |
1729 | elf32_cr16_link_hash_newfunc, | |
1730 | sizeof (struct elf32_cr16_link_hash_entry))) | |
1731 | { | |
1732 | free (ret->static_hash_table); | |
1733 | free (ret); | |
1734 | return NULL; | |
1735 | } | |
1736 | return &ret->root.root; | |
1737 | } | |
1738 | ||
1739 | /* Free an cr16 ELF linker hash table. */ | |
1740 | ||
1741 | static void | |
1742 | elf32_cr16_link_hash_table_free (struct bfd_link_hash_table *hash) | |
1743 | { | |
1744 | struct elf32_cr16_link_hash_table *ret | |
1745 | = (struct elf32_cr16_link_hash_table *) hash; | |
1746 | ||
1747 | _bfd_generic_link_hash_table_free | |
1748 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
1749 | _bfd_generic_link_hash_table_free | |
1750 | ((struct bfd_link_hash_table *) ret); | |
1751 | } | |
1752 | ||
1753 | static unsigned long | |
1754 | elf_cr16_mach (flagword flags) | |
1755 | { | |
1756 | switch (flags) | |
1757 | { | |
1758 | case EM_CR16: | |
1759 | default: | |
1760 | return bfd_mach_cr16; | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | /* The final processing done just before writing out a CR16 ELF object | |
1765 | file. This gets the CR16 architecture right based on the machine | |
1766 | number. */ | |
1767 | ||
1768 | static void | |
1769 | _bfd_cr16_elf_final_write_processing (bfd *abfd, | |
1770 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
1771 | { | |
1772 | unsigned long val; | |
1773 | switch (bfd_get_mach (abfd)) | |
1774 | { | |
1775 | default: | |
1776 | case bfd_mach_cr16: | |
1777 | val = EM_CR16; | |
1778 | break; | |
1779 | } | |
1780 | ||
1781 | ||
1782 | elf_elfheader (abfd)->e_flags |= val; | |
1783 | } | |
1784 | ||
1785 | ||
1786 | static bfd_boolean | |
1787 | _bfd_cr16_elf_object_p (bfd *abfd) | |
1788 | { | |
1789 | bfd_default_set_arch_mach (abfd, bfd_arch_cr16, | |
1790 | elf_cr16_mach (elf_elfheader (abfd)->e_flags)); | |
1791 | return TRUE; | |
1792 | } | |
1793 | ||
1794 | /* Merge backend specific data from an object file to the output | |
1795 | object file when linking. */ | |
1796 | ||
1797 | static bfd_boolean | |
1798 | _bfd_cr16_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
1799 | { | |
1800 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1801 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1802 | return TRUE; | |
1803 | ||
1804 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1805 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
1806 | { | |
1807 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
1808 | bfd_get_mach (ibfd))) | |
1809 | return FALSE; | |
1810 | } | |
1811 | ||
1812 | return TRUE; | |
1813 | } | |
1814 | ||
1815 | ||
3d3d428f NC |
1816 | /* This function handles relaxing for the CR16. |
1817 | ||
1818 | There's quite a few relaxing opportunites available on the CR16: | |
1819 | ||
99706f30 SR |
1820 | * bcond:24 -> bcond:16 1 byte |
1821 | * bcond:16 -> bcond:8 1 byte | |
1822 | * arithmetic imm32 -> arithmetic imm20 12 bits | |
1823 | * arithmetic imm20/imm16 -> arithmetic imm4 12/16 bits | |
3d3d428f NC |
1824 | |
1825 | Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */ | |
1826 | ||
1827 | static bfd_boolean | |
1828 | elf32_cr16_relax_section (bfd *abfd, asection *sec, | |
99706f30 | 1829 | struct bfd_link_info *link_info, bfd_boolean *again) |
3d3d428f NC |
1830 | { |
1831 | Elf_Internal_Shdr *symtab_hdr; | |
1832 | Elf_Internal_Rela *internal_relocs; | |
1833 | Elf_Internal_Rela *irel, *irelend; | |
1834 | bfd_byte *contents = NULL; | |
1835 | Elf_Internal_Sym *isymbuf = NULL; | |
1836 | ||
1837 | /* Assume nothing changes. */ | |
1838 | *again = FALSE; | |
1839 | ||
1840 | /* We don't have to do anything for a relocatable link, if | |
1841 | this section does not have relocs, or if this is not a | |
1842 | code section. */ | |
1843 | if (link_info->relocatable | |
1844 | || (sec->flags & SEC_RELOC) == 0 | |
1845 | || sec->reloc_count == 0 | |
1846 | || (sec->flags & SEC_CODE) == 0) | |
1847 | return TRUE; | |
1848 | ||
1849 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1850 | ||
1851 | /* Get a copy of the native relocations. */ | |
1852 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
7fac7ff4 | 1853 | link_info->keep_memory); |
3d3d428f NC |
1854 | if (internal_relocs == NULL) |
1855 | goto error_return; | |
1856 | ||
1857 | /* Walk through them looking for relaxing opportunities. */ | |
1858 | irelend = internal_relocs + sec->reloc_count; | |
1859 | for (irel = internal_relocs; irel < irelend; irel++) | |
1860 | { | |
1861 | bfd_vma symval; | |
1862 | ||
1863 | /* If this isn't something that can be relaxed, then ignore | |
1864 | this reloc. */ | |
1865 | if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP16 | |
7fac7ff4 NC |
1866 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP24 |
1867 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM32 | |
1868 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM20 | |
1869 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM16) | |
3d3d428f NC |
1870 | continue; |
1871 | ||
1872 | /* Get the section contents if we haven't done so already. */ | |
1873 | if (contents == NULL) | |
1874 | { | |
1875 | /* Get cached copy if it exists. */ | |
1876 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1877 | contents = elf_section_data (sec)->this_hdr.contents; | |
1878 | /* Go get them off disk. */ | |
1879 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1880 | goto error_return; | |
1881 | } | |
1882 | ||
1883 | /* Read this BFD's local symbols if we haven't done so already. */ | |
1884 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
1885 | { | |
1886 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1887 | if (isymbuf == NULL) | |
1888 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1889 | symtab_hdr->sh_info, 0, | |
1890 | NULL, NULL, NULL); | |
1891 | if (isymbuf == NULL) | |
1892 | goto error_return; | |
1893 | } | |
1894 | ||
1895 | /* Get the value of the symbol referred to by the reloc. */ | |
1896 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1897 | { | |
1898 | /* A local symbol. */ | |
1899 | Elf_Internal_Sym *isym; | |
1900 | asection *sym_sec; | |
1901 | ||
1902 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
1903 | if (isym->st_shndx == SHN_UNDEF) | |
1904 | sym_sec = bfd_und_section_ptr; | |
1905 | else if (isym->st_shndx == SHN_ABS) | |
1906 | sym_sec = bfd_abs_section_ptr; | |
1907 | else if (isym->st_shndx == SHN_COMMON) | |
1908 | sym_sec = bfd_com_section_ptr; | |
1909 | else | |
1910 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
1911 | symval = (isym->st_value | |
1912 | + sym_sec->output_section->vma | |
1913 | + sym_sec->output_offset); | |
1914 | } | |
1915 | else | |
1916 | { | |
1917 | unsigned long indx; | |
1918 | struct elf_link_hash_entry *h; | |
1919 | ||
1920 | /* An external symbol. */ | |
1921 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1922 | h = elf_sym_hashes (abfd)[indx]; | |
1923 | BFD_ASSERT (h != NULL); | |
1924 | ||
1925 | if (h->root.type != bfd_link_hash_defined | |
1926 | && h->root.type != bfd_link_hash_defweak) | |
1927 | /* This appears to be a reference to an undefined | |
1928 | symbol. Just ignore it--it will be caught by the | |
1929 | regular reloc processing. */ | |
1930 | continue; | |
1931 | ||
1932 | symval = (h->root.u.def.value | |
1933 | + h->root.u.def.section->output_section->vma | |
1934 | + h->root.u.def.section->output_offset); | |
1935 | } | |
1936 | ||
1937 | /* For simplicity of coding, we are going to modify the section | |
1938 | contents, the section relocs, and the BFD symbol table. We | |
1939 | must tell the rest of the code not to free up this | |
1940 | information. It would be possible to instead create a table | |
1941 | of changes which have to be made, as is done in coff-mips.c; | |
1942 | that would be more work, but would require less memory when | |
1943 | the linker is run. */ | |
1944 | ||
1945 | /* Try to turn a 24 branch/call into a 16bit relative | |
7fac7ff4 | 1946 | branch/call. */ |
3d3d428f NC |
1947 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP24) |
1948 | { | |
1949 | bfd_vma value = symval; | |
1950 | ||
1951 | /* Deal with pc-relative gunk. */ | |
1952 | value -= (sec->output_section->vma + sec->output_offset); | |
1953 | value -= irel->r_offset; | |
1954 | value += irel->r_addend; | |
1955 | ||
1956 | /* See if the value will fit in 16 bits, note the high value is | |
1957 | 0xfffe + 2 as the target will be two bytes closer if we are | |
1958 | able to relax. */ | |
1959 | if ((long) value < 0x10000 && (long) value > -0x10002) | |
1960 | { | |
1961 | unsigned int code; | |
1962 | ||
1963 | /* Get the opcode. */ | |
1964 | code = (unsigned int) bfd_get_32 (abfd, contents + irel->r_offset); | |
1965 | ||
1966 | /* Verify it's a 'bcond' and fix the opcode. */ | |
1967 | if ((code & 0xffff) == 0x0010) | |
99706f30 | 1968 | bfd_put_16 (abfd, 0x1800 | ((0xf & (code >> 20)) << 4), contents + irel->r_offset); |
3d3d428f NC |
1969 | else |
1970 | continue; | |
1971 | ||
1972 | /* Note that we've changed the relocs, section contents, etc. */ | |
1973 | elf_section_data (sec)->relocs = internal_relocs; | |
1974 | elf_section_data (sec)->this_hdr.contents = contents; | |
1975 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1976 | ||
1977 | /* Fix the relocation's type. */ | |
1978 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1979 | R_CR16_DISP16); | |
1980 | ||
1981 | /* Delete two bytes of data. */ | |
1982 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
1983 | irel->r_offset + 2, 2)) | |
1984 | goto error_return; | |
1985 | ||
1986 | /* That will change things, so, we should relax again. | |
1987 | Note that this is not required, and it may be slow. */ | |
1988 | *again = TRUE; | |
1989 | } | |
1990 | } | |
1991 | ||
99706f30 SR |
1992 | /* Try to turn a 16bit pc-relative branch into an |
1993 | 8bit pc-relative branch. */ | |
3d3d428f NC |
1994 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP16) |
1995 | { | |
1996 | bfd_vma value = symval; | |
1997 | ||
1998 | /* Deal with pc-relative gunk. */ | |
1999 | value -= (sec->output_section->vma + sec->output_offset); | |
2000 | value -= irel->r_offset; | |
2001 | value += irel->r_addend; | |
2002 | ||
2003 | /* See if the value will fit in 8 bits, note the high value is | |
2004 | 0xfc + 2 as the target will be two bytes closer if we are | |
2005 | able to relax. */ | |
99706f30 SR |
2006 | /*if ((long) value < 0x1fa && (long) value > -0x100) REVISIT:range */ |
2007 | if ((long) value < 0xfa && (long) value > -0x100) | |
3d3d428f NC |
2008 | { |
2009 | unsigned short code; | |
2010 | ||
2011 | /* Get the opcode. */ | |
2012 | code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); | |
2013 | ||
99706f30 SR |
2014 | /* Verify it's a 'bcond' and fix the opcode. */ |
2015 | if ((code & 0xff0f) == 0x1800) | |
2016 | bfd_put_16 (abfd, (code & 0xf0f0), contents + irel->r_offset); | |
3d3d428f NC |
2017 | else |
2018 | continue; | |
2019 | ||
2020 | /* Note that we've changed the relocs, section contents, etc. */ | |
2021 | elf_section_data (sec)->relocs = internal_relocs; | |
2022 | elf_section_data (sec)->this_hdr.contents = contents; | |
2023 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2024 | ||
2025 | /* Fix the relocation's type. */ | |
2026 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2027 | R_CR16_DISP8); | |
2028 | ||
2029 | /* Delete two bytes of data. */ | |
2030 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
2031 | irel->r_offset + 2, 2)) | |
2032 | goto error_return; | |
2033 | ||
2034 | /* That will change things, so, we should relax again. | |
2035 | Note that this is not required, and it may be slow. */ | |
2036 | *again = TRUE; | |
2037 | } | |
2038 | } | |
2039 | ||
99706f30 | 2040 | /* Try to turn a 32-bit IMM address into a 20/16-bit IMM address */ |
3d3d428f NC |
2041 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM32) |
2042 | { | |
2043 | bfd_vma value = symval; | |
7fac7ff4 | 2044 | unsigned short is_add_mov = 0; |
99706f30 SR |
2045 | bfd_vma value1 = 0; |
2046 | ||
2047 | /* Get the existing value from the mcode */ | |
2048 | value1 = ((bfd_get_32 (abfd, contents + irel->r_offset + 2) >> 16) | |
2049 | |(((bfd_get_32 (abfd, contents + irel->r_offset + 2) & 0xffff) << 16))); | |
3d3d428f NC |
2050 | |
2051 | /* See if the value will fit in 20 bits. */ | |
99706f30 | 2052 | if ((long) (value + value1) < 0xfffff && (long) (value + value1) > 0) |
3d3d428f NC |
2053 | { |
2054 | unsigned short code; | |
2055 | ||
2056 | /* Get the opcode. */ | |
2057 | code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); | |
2058 | ||
99706f30 | 2059 | /* Verify it's a 'arithmetic ADDD or MOVD instruction'. |
7fac7ff4 | 2060 | For ADDD and MOVD only, convert to IMM32 -> IMM20. */ |
99706f30 | 2061 | |
e9deb29d | 2062 | if (((code & 0xfff0) == 0x0070) || ((code & 0xfff0) == 0x0020)) |
99706f30 | 2063 | is_add_mov = 1; |
7fac7ff4 NC |
2064 | |
2065 | if (is_add_mov) | |
2066 | { | |
99706f30 | 2067 | /* Note that we've changed the relocs, section contents, |
7fac7ff4 NC |
2068 | etc. */ |
2069 | elf_section_data (sec)->relocs = internal_relocs; | |
2070 | elf_section_data (sec)->this_hdr.contents = contents; | |
2071 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2072 | ||
2073 | /* Fix the opcode. */ | |
2074 | if ((code & 0xfff0) == 0x0070) /* For movd. */ | |
2075 | bfd_put_8 (abfd, 0x05, contents + irel->r_offset + 1); | |
99706f30 | 2076 | else /* code == 0x0020 for addd. */ |
7fac7ff4 | 2077 | bfd_put_8 (abfd, 0x04, contents + irel->r_offset + 1); |
99706f30 | 2078 | |
7fac7ff4 NC |
2079 | bfd_put_8 (abfd, (code & 0xf) << 4, contents + irel->r_offset); |
2080 | ||
99706f30 SR |
2081 | /* If existing value is nagavive adjust approriately |
2082 | place the 16-20bits (ie 4 bit) in new opcode, | |
2083 | as the 0xffffxxxx, the higher 2 byte values removed. */ | |
2084 | if (value1 & 0x80000000) | |
2085 | bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset); | |
2086 | else | |
2087 | bfd_put_8 (abfd, (((value1 >> 16)&0xf) | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset); | |
7fac7ff4 NC |
2088 | |
2089 | /* Fix the relocation's type. */ | |
2090 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
99706f30 SR |
2091 | R_CR16_IMM20); |
2092 | ||
7fac7ff4 NC |
2093 | /* Delete two bytes of data. */ |
2094 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
99706f30 | 2095 | irel->r_offset + 2, 2)) |
7fac7ff4 NC |
2096 | goto error_return; |
2097 | ||
2098 | /* That will change things, so, we should relax again. | |
2099 | Note that this is not required, and it may be slow. */ | |
2100 | *again = TRUE; | |
2101 | } | |
2102 | } | |
99706f30 SR |
2103 | |
2104 | /* See if the value will fit in 16 bits. */ | |
2105 | if ((!is_add_mov) | |
2106 | && ((long)(value + value1) < 0x7fff && (long)(value + value1) > 0)) | |
7fac7ff4 NC |
2107 | { |
2108 | unsigned short code; | |
2109 | ||
2110 | /* Get the opcode. */ | |
2111 | code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); | |
3d3d428f NC |
2112 | |
2113 | /* Note that we've changed the relocs, section contents, etc. */ | |
2114 | elf_section_data (sec)->relocs = internal_relocs; | |
2115 | elf_section_data (sec)->this_hdr.contents = contents; | |
2116 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2117 | ||
2118 | /* Fix the opcode. */ | |
7fac7ff4 NC |
2119 | if ((code & 0xf0) == 0x70) /* For movd. */ |
2120 | bfd_put_8 (abfd, 0x54, contents + irel->r_offset + 1); | |
2121 | else if ((code & 0xf0) == 0x20) /* For addd. */ | |
2122 | bfd_put_8 (abfd, 0x60, contents + irel->r_offset + 1); | |
2123 | else if ((code & 0xf0) == 0x90) /* For cmpd. */ | |
2124 | bfd_put_8 (abfd, 0x56, contents + irel->r_offset + 1); | |
2125 | else | |
2126 | continue; | |
2127 | ||
2128 | bfd_put_8 (abfd, 0xb0 | (code & 0xf), contents + irel->r_offset); | |
3d3d428f | 2129 | |
99706f30 SR |
2130 | /* If existing value is nagavive adjust approriately |
2131 | place the 12-16bits (ie 4 bit) in new opcode, | |
2132 | as the 0xfffffxxx, the higher 2 byte values removed. */ | |
2133 | if (value1 & 0x80000000) | |
2134 | bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset); | |
2135 | else | |
2136 | bfd_put_16 (abfd, value1, contents + irel->r_offset + 2); | |
2137 | ||
2138 | ||
3d3d428f NC |
2139 | /* Fix the relocation's type. */ |
2140 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
7fac7ff4 | 2141 | R_CR16_IMM16); |
3d3d428f NC |
2142 | |
2143 | /* Delete two bytes of data. */ | |
2144 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
7fac7ff4 | 2145 | irel->r_offset + 2, 2)) |
99706f30 | 2146 | goto error_return; |
3d3d428f NC |
2147 | |
2148 | /* That will change things, so, we should relax again. | |
2149 | Note that this is not required, and it may be slow. */ | |
99706f30 | 2150 | *again = TRUE; |
3d3d428f NC |
2151 | } |
2152 | } | |
7fac7ff4 | 2153 | |
99706f30 SR |
2154 | #if 0 |
2155 | /* Try to turn a 16bit immediate address into a 4bit | |
2156 | immediate address. */ | |
2157 | if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20) | |
7fac7ff4 | 2158 | || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM16)) |
3d3d428f NC |
2159 | { |
2160 | bfd_vma value = symval; | |
99706f30 SR |
2161 | bfd_vma value1 = 0; |
2162 | ||
2163 | /* Get the existing value from the mcode */ | |
2164 | value1 = ((bfd_get_16 (abfd, contents + irel->r_offset + 2) & 0xffff)); | |
2165 | ||
2166 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20) | |
2167 | { | |
2168 | value1 |= ((bfd_get_16 (abfd, contents + irel->r_offset + 1) & 0xf000) << 0x4); | |
2169 | } | |
3d3d428f NC |
2170 | |
2171 | /* See if the value will fit in 4 bits. */ | |
99706f30 SR |
2172 | if ((((long) (value + value1)) < 0xf) |
2173 | && (((long) (value + value1)) > 0)) | |
3d3d428f NC |
2174 | { |
2175 | unsigned short code; | |
2176 | ||
2177 | /* Get the opcode. */ | |
7fac7ff4 | 2178 | code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); |
3d3d428f NC |
2179 | |
2180 | /* Note that we've changed the relocs, section contents, etc. */ | |
2181 | elf_section_data (sec)->relocs = internal_relocs; | |
2182 | elf_section_data (sec)->this_hdr.contents = contents; | |
2183 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2184 | ||
2185 | /* Fix the opcode. */ | |
7fac7ff4 NC |
2186 | if (((code & 0x0f00) == 0x0400) || ((code & 0x0f00) == 0x0500)) |
2187 | { | |
2188 | if ((code & 0x0f00) == 0x0400) /* For movd imm20. */ | |
2189 | bfd_put_8 (abfd, 0x60, contents + irel->r_offset); | |
2190 | else /* For addd imm20. */ | |
2191 | bfd_put_8 (abfd, 0x54, contents + irel->r_offset); | |
2192 | bfd_put_8 (abfd, (code & 0xf0) >> 4, contents + irel->r_offset + 1); | |
2193 | } | |
2194 | else | |
2195 | { | |
2196 | if ((code & 0xfff0) == 0x56b0) /* For cmpd imm16. */ | |
2197 | bfd_put_8 (abfd, 0x56, contents + irel->r_offset); | |
2198 | else if ((code & 0xfff0) == 0x54b0) /* For movd imm16. */ | |
2199 | bfd_put_8 (abfd, 0x54, contents + irel->r_offset); | |
2200 | else if ((code & 0xfff0) == 0x58b0) /* For movb imm16. */ | |
2201 | bfd_put_8 (abfd, 0x58, contents + irel->r_offset); | |
2202 | else if ((code & 0xfff0) == 0x5Ab0) /* For movw imm16. */ | |
2203 | bfd_put_8 (abfd, 0x5A, contents + irel->r_offset); | |
2204 | else if ((code & 0xfff0) == 0x60b0) /* For addd imm16. */ | |
2205 | bfd_put_8 (abfd, 0x60, contents + irel->r_offset); | |
2206 | else if ((code & 0xfff0) == 0x30b0) /* For addb imm16. */ | |
2207 | bfd_put_8 (abfd, 0x30, contents + irel->r_offset); | |
2208 | else if ((code & 0xfff0) == 0x2Cb0) /* For addub imm16. */ | |
2209 | bfd_put_8 (abfd, 0x2C, contents + irel->r_offset); | |
2210 | else if ((code & 0xfff0) == 0x32b0) /* For adduw imm16. */ | |
2211 | bfd_put_8 (abfd, 0x32, contents + irel->r_offset); | |
2212 | else if ((code & 0xfff0) == 0x38b0) /* For subb imm16. */ | |
2213 | bfd_put_8 (abfd, 0x38, contents + irel->r_offset); | |
99706f30 SR |
2214 | else if ((code & 0xfff0) == 0x3Cb0) /* For subcb imm16. */ |
2215 | bfd_put_8 (abfd, 0x3C, contents + irel->r_offset); | |
2216 | else if ((code & 0xfff0) == 0x3Fb0) /* For subcw imm16. */ | |
2217 | bfd_put_8 (abfd, 0x3F, contents + irel->r_offset); | |
7fac7ff4 NC |
2218 | else if ((code & 0xfff0) == 0x3Ab0) /* For subw imm16. */ |
2219 | bfd_put_8 (abfd, 0x3A, contents + irel->r_offset); | |
2220 | else if ((code & 0xfff0) == 0x50b0) /* For cmpb imm16. */ | |
2221 | bfd_put_8 (abfd, 0x50, contents + irel->r_offset); | |
2222 | else if ((code & 0xfff0) == 0x52b0) /* For cmpw imm16. */ | |
2223 | bfd_put_8 (abfd, 0x52, contents + irel->r_offset); | |
2224 | else | |
2225 | continue; | |
99706f30 | 2226 | |
7fac7ff4 NC |
2227 | bfd_put_8 (abfd, (code & 0xf), contents + irel->r_offset + 1); |
2228 | } | |
3d3d428f NC |
2229 | |
2230 | /* Fix the relocation's type. */ | |
2231 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2232 | R_CR16_IMM4); | |
2233 | ||
2234 | /* Delete two bytes of data. */ | |
2235 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
99706f30 | 2236 | irel->r_offset + 2, 2)) |
3d3d428f NC |
2237 | goto error_return; |
2238 | ||
2239 | /* That will change things, so, we should relax again. | |
2240 | Note that this is not required, and it may be slow. */ | |
2241 | *again = TRUE; | |
2242 | } | |
2243 | } | |
99706f30 | 2244 | #endif |
3d3d428f NC |
2245 | } |
2246 | ||
2247 | if (isymbuf != NULL | |
2248 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2249 | { | |
2250 | if (! link_info->keep_memory) | |
2251 | free (isymbuf); | |
2252 | else | |
99706f30 SR |
2253 | /* Cache the symbols for elf_link_input_bfd. */ |
2254 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
3d3d428f NC |
2255 | } |
2256 | ||
2257 | if (contents != NULL | |
2258 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2259 | { | |
2260 | if (! link_info->keep_memory) | |
2261 | free (contents); | |
2262 | else | |
99706f30 SR |
2263 | /* Cache the section contents for elf_link_input_bfd. */ |
2264 | elf_section_data (sec)->this_hdr.contents = contents; | |
2265 | ||
3d3d428f NC |
2266 | } |
2267 | ||
2268 | if (internal_relocs != NULL | |
2269 | && elf_section_data (sec)->relocs != internal_relocs) | |
2270 | free (internal_relocs); | |
2271 | ||
2272 | return TRUE; | |
2273 | ||
2274 | error_return: | |
2275 | if (isymbuf != NULL | |
2276 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2277 | free (isymbuf); | |
2278 | if (contents != NULL | |
2279 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2280 | free (contents); | |
2281 | if (internal_relocs != NULL | |
2282 | && elf_section_data (sec)->relocs != internal_relocs) | |
2283 | free (internal_relocs); | |
2284 | ||
2285 | return FALSE; | |
2286 | } | |
2287 | ||
2288 | static asection * | |
2289 | elf32_cr16_gc_mark_hook (asection *sec, | |
fb34365b AM |
2290 | struct bfd_link_info *info, |
2291 | Elf_Internal_Rela *rel, | |
99706f30 SR |
2292 | struct elf_link_hash_entry *h, |
2293 | Elf_Internal_Sym *sym) | |
3d3d428f | 2294 | { |
fb34365b | 2295 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
3d3d428f NC |
2296 | } |
2297 | ||
2298 | /* Update the got entry reference counts for the section being removed. */ | |
2299 | ||
2300 | static bfd_boolean | |
2301 | elf32_cr16_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, | |
99706f30 SR |
2302 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2303 | asection *sec ATTRIBUTE_UNUSED, | |
2304 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
3d3d428f NC |
2305 | { |
2306 | /* We don't support garbage collection of GOT and PLT relocs yet. */ | |
2307 | return TRUE; | |
2308 | } | |
2309 | ||
99706f30 SR |
2310 | /* Create dynamic sections when linking against a dynamic object. */ |
2311 | ||
2312 | static bfd_boolean | |
2313 | _bfd_cr16_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2314 | { | |
2315 | flagword flags; | |
2316 | asection * s; | |
2317 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); | |
2318 | int ptralign = 0; | |
2319 | ||
2320 | switch (bed->s->arch_size) | |
2321 | { | |
2322 | case 16: | |
2323 | ptralign = 1; | |
2324 | break; | |
2325 | ||
2326 | case 32: | |
2327 | ptralign = 2; | |
2328 | break; | |
2329 | ||
2330 | default: | |
2331 | bfd_set_error (bfd_error_bad_value); | |
2332 | return FALSE; | |
2333 | } | |
2334 | ||
2335 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
2336 | .rel[a].bss sections. */ | |
2337 | ||
2338 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2339 | | SEC_LINKER_CREATED); | |
2340 | ||
2341 | s = bfd_make_section_with_flags (abfd, | |
2342 | (bed->default_use_rela_p | |
2343 | ? ".rela.plt" : ".rel.plt"), | |
2344 | flags | SEC_READONLY); | |
2345 | if (s == NULL | |
2346 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2347 | return FALSE; | |
2348 | ||
2349 | if (! _bfd_cr16_elf_create_got_section (abfd, info)) | |
2350 | return FALSE; | |
2351 | ||
2352 | { | |
2353 | const char * secname; | |
2354 | char * relname; | |
2355 | flagword secflags; | |
2356 | asection * sec; | |
2357 | ||
2358 | for (sec = abfd->sections; sec; sec = sec->next) | |
2359 | { | |
2360 | secflags = bfd_get_section_flags (abfd, sec); | |
2361 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
2362 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
2363 | continue; | |
2364 | ||
2365 | secname = bfd_get_section_name (abfd, sec); | |
2366 | relname = (char *) bfd_malloc (strlen (secname) + 6); | |
2367 | strcpy (relname, ".rela"); | |
2368 | strcat (relname, secname); | |
2369 | ||
2370 | s = bfd_make_section_with_flags (abfd, relname, | |
2371 | flags | SEC_READONLY); | |
2372 | if (s == NULL | |
2373 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2374 | return FALSE; | |
2375 | } | |
2376 | } | |
2377 | ||
2378 | if (bed->want_dynbss) | |
2379 | { | |
2380 | /* The .dynbss section is a place to put symbols which are defined | |
2381 | by dynamic objects, are referenced by regular objects, and are | |
2382 | not functions. We must allocate space for them in the process | |
2383 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
2384 | initialize them at run time. The linker script puts the .dynbss | |
2385 | section into the .bss section of the final image. */ | |
2386 | s = bfd_make_section_with_flags (abfd, ".dynbss", | |
2387 | SEC_ALLOC | SEC_LINKER_CREATED); | |
2388 | if (s == NULL) | |
2389 | return FALSE; | |
2390 | ||
2391 | /* The .rel[a].bss section holds copy relocs. This section is not | |
2392 | normally needed. We need to create it here, though, so that the | |
2393 | linker will map it to an output section. We can't just create it | |
2394 | only if we need it, because we will not know whether we need it | |
2395 | until we have seen all the input files, and the first time the | |
2396 | main linker code calls BFD after examining all the input files | |
2397 | (size_dynamic_sections) the input sections have already been | |
2398 | mapped to the output sections. If the section turns out not to | |
2399 | be needed, we can discard it later. We will never need this | |
2400 | section when generating a shared object, since they do not use | |
2401 | copy relocs. */ | |
2402 | if (! info->executable) | |
2403 | { | |
2404 | s = bfd_make_section_with_flags (abfd, | |
2405 | (bed->default_use_rela_p | |
2406 | ? ".rela.bss" : ".rel.bss"), | |
2407 | flags | SEC_READONLY); | |
2408 | if (s == NULL | |
2409 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2410 | return FALSE; | |
2411 | } | |
2412 | } | |
2413 | ||
2414 | return TRUE; | |
2415 | } | |
2416 | \f | |
2417 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2418 | regular object. The current definition is in some section of the | |
2419 | dynamic object, but we're not including those sections. We have to | |
2420 | change the definition to something the rest of the link can | |
2421 | understand. */ | |
2422 | ||
2423 | static bfd_boolean | |
2424 | _bfd_cr16_elf_adjust_dynamic_symbol (struct bfd_link_info * info, | |
2425 | struct elf_link_hash_entry * h) | |
2426 | { | |
2427 | bfd * dynobj; | |
2428 | asection * s; | |
2429 | ||
2430 | dynobj = elf_hash_table (info)->dynobj; | |
2431 | ||
2432 | /* Make sure we know what is going on here. */ | |
2433 | BFD_ASSERT (dynobj != NULL | |
2434 | && (h->needs_plt | |
2435 | || h->u.weakdef != NULL | |
2436 | || (h->def_dynamic | |
2437 | && h->ref_regular | |
2438 | && !h->def_regular))); | |
2439 | ||
2440 | /* If this is a function, put it in the procedure linkage table. We | |
2441 | will fill in the contents of the procedure linkage table later, | |
2442 | when we know the address of the .got section. */ | |
2443 | if (h->type == STT_FUNC | |
2444 | || h->needs_plt) | |
2445 | { | |
2446 | if (! info->executable | |
2447 | && !h->def_dynamic | |
2448 | && !h->ref_dynamic) | |
2449 | { | |
2450 | /* This case can occur if we saw a PLT reloc in an input | |
2451 | file, but the symbol was never referred to by a dynamic | |
2452 | object. In such a case, we don't actually need to build | |
2453 | a procedure linkage table, and we can just do a REL32 | |
2454 | reloc instead. */ | |
2455 | BFD_ASSERT (h->needs_plt); | |
2456 | return TRUE; | |
2457 | } | |
2458 | ||
2459 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2460 | if (h->dynindx == -1) | |
2461 | { | |
2462 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2463 | return FALSE; | |
2464 | } | |
2465 | ||
2466 | /* We also need to make an entry in the .got.plt section, which | |
2467 | will be placed in the .got section by the linker script. */ | |
2468 | ||
2469 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2470 | BFD_ASSERT (s != NULL); | |
2471 | s->size += 4; | |
2472 | ||
2473 | /* We also need to make an entry in the .rela.plt section. */ | |
2474 | ||
2475 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2476 | BFD_ASSERT (s != NULL); | |
2477 | s->size += sizeof (Elf32_External_Rela); | |
2478 | ||
2479 | return TRUE; | |
2480 | } | |
2481 | ||
2482 | /* If this is a weak symbol, and there is a real definition, the | |
2483 | processor independent code will have arranged for us to see the | |
2484 | real definition first, and we can just use the same value. */ | |
2485 | if (h->u.weakdef != NULL) | |
2486 | { | |
2487 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
2488 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2489 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2490 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2491 | return TRUE; | |
2492 | } | |
2493 | ||
2494 | /* This is a reference to a symbol defined by a dynamic object which | |
2495 | is not a function. */ | |
2496 | ||
2497 | /* If we are creating a shared library, we must presume that the | |
2498 | only references to the symbol are via the global offset table. | |
2499 | For such cases we need not do anything here; the relocations will | |
2500 | be handled correctly by relocate_section. */ | |
2501 | if (info->executable) | |
2502 | return TRUE; | |
2503 | ||
2504 | /* If there are no references to this symbol that do not use the | |
2505 | GOT, we don't need to generate a copy reloc. */ | |
2506 | if (!h->non_got_ref) | |
2507 | return TRUE; | |
2508 | ||
2509 | if (h->size == 0) | |
2510 | { | |
2511 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
2512 | h->root.root.string); | |
2513 | return TRUE; | |
2514 | } | |
2515 | ||
2516 | /* We must allocate the symbol in our .dynbss section, which will | |
2517 | become part of the .bss section of the executable. There will be | |
2518 | an entry for this symbol in the .dynsym section. The dynamic | |
2519 | object will contain position independent code, so all references | |
2520 | from the dynamic object to this symbol will go through the global | |
2521 | offset table. The dynamic linker will use the .dynsym entry to | |
2522 | determine the address it must put in the global offset table, so | |
2523 | both the dynamic object and the regular object will refer to the | |
2524 | same memory location for the variable. */ | |
2525 | ||
2526 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2527 | BFD_ASSERT (s != NULL); | |
2528 | ||
2529 | /* We must generate a R_CR16_COPY reloc to tell the dynamic linker to | |
2530 | copy the initial value out of the dynamic object and into the | |
2531 | runtime process image. We need to remember the offset into the | |
2532 | .rela.bss section we are going to use. */ | |
2533 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2534 | { | |
2535 | asection * srel; | |
2536 | ||
2537 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2538 | BFD_ASSERT (srel != NULL); | |
2539 | srel->size += sizeof (Elf32_External_Rela); | |
2540 | h->needs_copy = 1; | |
2541 | } | |
2542 | ||
2543 | return _bfd_elf_adjust_dynamic_copy (h, s); | |
2544 | } | |
2545 | ||
2546 | /* Set the sizes of the dynamic sections. */ | |
2547 | ||
2548 | static bfd_boolean | |
2549 | _bfd_cr16_elf_size_dynamic_sections (bfd * output_bfd, | |
2550 | struct bfd_link_info * info) | |
2551 | { | |
2552 | bfd * dynobj; | |
2553 | asection * s; | |
2554 | bfd_boolean plt; | |
2555 | bfd_boolean relocs; | |
2556 | bfd_boolean reltext; | |
2557 | ||
2558 | dynobj = elf_hash_table (info)->dynobj; | |
2559 | BFD_ASSERT (dynobj != NULL); | |
2560 | ||
2561 | if (elf_hash_table (info)->dynamic_sections_created) | |
2562 | { | |
2563 | /* Set the contents of the .interp section to the interpreter. */ | |
2564 | if (info->executable) | |
2565 | { | |
2566 | #if 0 | |
2567 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2568 | BFD_ASSERT (s != NULL); | |
2569 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2570 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2571 | #endif | |
2572 | } | |
2573 | } | |
2574 | else | |
2575 | { | |
2576 | /* We may have created entries in the .rela.got section. | |
2577 | However, if we are not creating the dynamic sections, we will | |
2578 | not actually use these entries. Reset the size of .rela.got, | |
2579 | which will cause it to get stripped from the output file | |
2580 | below. */ | |
2581 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2582 | if (s != NULL) | |
2583 | s->size = 0; | |
2584 | } | |
2585 | ||
2586 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2587 | determined the sizes of the various dynamic sections. Allocate | |
2588 | memory for them. */ | |
2589 | plt = FALSE; | |
2590 | relocs = FALSE; | |
2591 | reltext = FALSE; | |
2592 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2593 | { | |
2594 | const char * name; | |
2595 | ||
2596 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2597 | continue; | |
2598 | ||
2599 | /* It's OK to base decisions on the section name, because none | |
2600 | of the dynobj section names depend upon the input files. */ | |
2601 | name = bfd_get_section_name (dynobj, s); | |
2602 | ||
2603 | if (strcmp (name, ".plt") == 0) | |
2604 | { | |
2605 | /* Remember whether there is a PLT. */ | |
2606 | plt = s->size != 0; | |
2607 | } | |
2608 | else if (CONST_STRNEQ (name, ".rela")) | |
2609 | { | |
2610 | if (s->size != 0) | |
2611 | { | |
2612 | asection * target; | |
2613 | ||
2614 | /* Remember whether there are any reloc sections other | |
2615 | than .rela.plt. */ | |
2616 | if (strcmp (name, ".rela.plt") != 0) | |
2617 | { | |
2618 | const char * outname; | |
2619 | ||
2620 | relocs = TRUE; | |
2621 | ||
2622 | /* If this relocation section applies to a read only | |
2623 | section, then we probably need a DT_TEXTREL | |
2624 | entry. The entries in the .rela.plt section | |
2625 | really apply to the .got section, which we | |
2626 | created ourselves and so know is not readonly. */ | |
2627 | outname = bfd_get_section_name (output_bfd, | |
2628 | s->output_section); | |
2629 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
2630 | if (target != NULL | |
2631 | && (target->flags & SEC_READONLY) != 0 | |
2632 | && (target->flags & SEC_ALLOC) != 0) | |
2633 | reltext = TRUE; | |
2634 | } | |
2635 | ||
2636 | /* We use the reloc_count field as a counter if we need | |
2637 | to copy relocs into the output file. */ | |
2638 | s->reloc_count = 0; | |
2639 | } | |
2640 | } | |
2641 | else if (! CONST_STRNEQ (name, ".got") | |
2642 | && strcmp (name, ".dynbss") != 0) | |
2643 | /* It's not one of our sections, so don't allocate space. */ | |
2644 | continue; | |
2645 | ||
2646 | if (s->size == 0) | |
2647 | { | |
2648 | /* If we don't need this section, strip it from the | |
2649 | output file. This is mostly to handle .rela.bss and | |
2650 | .rela.plt. We must create both sections in | |
2651 | create_dynamic_sections, because they must be created | |
2652 | before the linker maps input sections to output | |
2653 | sections. The linker does that before | |
2654 | adjust_dynamic_symbol is called, and it is that | |
2655 | function which decides whether anything needs to go | |
2656 | into these sections. */ | |
2657 | s->flags |= SEC_EXCLUDE; | |
2658 | continue; | |
2659 | } | |
2660 | ||
2661 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
2662 | continue; | |
2663 | ||
2664 | /* Allocate memory for the section contents. We use bfd_zalloc | |
2665 | here in case unused entries are not reclaimed before the | |
2666 | section's contents are written out. This should not happen, | |
2667 | but this way if it does, we get a R_CR16_NONE reloc | |
2668 | instead of garbage. */ | |
2669 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2670 | if (s->contents == NULL) | |
2671 | return FALSE; | |
2672 | } | |
2673 | ||
2674 | if (elf_hash_table (info)->dynamic_sections_created) | |
2675 | { | |
2676 | /* Add some entries to the .dynamic section. We fill in the | |
2677 | values later, in _bfd_cr16_elf_finish_dynamic_sections, | |
2678 | but we must add the entries now so that we get the correct | |
2679 | size for the .dynamic section. The DT_DEBUG entry is filled | |
2680 | in by the dynamic linker and used by the debugger. */ | |
2681 | if (! info->executable) | |
2682 | { | |
2683 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2684 | return FALSE; | |
2685 | } | |
2686 | ||
2687 | if (plt) | |
2688 | { | |
2689 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) | |
2690 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2691 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2692 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2693 | return FALSE; | |
2694 | } | |
2695 | ||
2696 | if (relocs) | |
2697 | { | |
2698 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) | |
2699 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
2700 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, | |
2701 | sizeof (Elf32_External_Rela))) | |
2702 | return FALSE; | |
2703 | } | |
2704 | ||
2705 | if (reltext) | |
2706 | { | |
2707 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2708 | return FALSE; | |
2709 | } | |
2710 | } | |
2711 | ||
2712 | return TRUE; | |
2713 | } | |
2714 | ||
2715 | /* Finish up dynamic symbol handling. We set the contents of various | |
2716 | dynamic sections here. */ | |
2717 | ||
2718 | static bfd_boolean | |
2719 | _bfd_cr16_elf_finish_dynamic_symbol (bfd * output_bfd, | |
2720 | struct bfd_link_info * info, | |
2721 | struct elf_link_hash_entry * h, | |
2722 | Elf_Internal_Sym * sym) | |
2723 | { | |
2724 | bfd * dynobj; | |
2725 | ||
2726 | dynobj = elf_hash_table (info)->dynobj; | |
2727 | ||
2728 | if (h->got.offset != (bfd_vma) -1) | |
2729 | { | |
2730 | asection * sgot; | |
2731 | asection * srel; | |
2732 | Elf_Internal_Rela rel; | |
2733 | ||
2734 | /* This symbol has an entry in the global offset table. Set it up. */ | |
2735 | ||
2736 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2737 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2738 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
2739 | ||
2740 | rel.r_offset = (sgot->output_section->vma | |
2741 | + sgot->output_offset | |
2742 | + (h->got.offset & ~1)); | |
2743 | ||
2744 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2745 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2746 | the symbol was forced to be local because of a version file. | |
2747 | The entry in the global offset table will already have been | |
2748 | initialized in the relocate_section function. */ | |
2749 | if (info->executable | |
2750 | && (info->symbolic || h->dynindx == -1) | |
2751 | && h->def_regular) | |
2752 | { | |
2753 | rel.r_info = ELF32_R_INFO (0, R_CR16_GOT_REGREL20); | |
2754 | rel.r_addend = (h->root.u.def.value | |
2755 | + h->root.u.def.section->output_section->vma | |
2756 | + h->root.u.def.section->output_offset); | |
2757 | } | |
2758 | else | |
2759 | { | |
2760 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
2761 | rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20); | |
2762 | rel.r_addend = 0; | |
2763 | } | |
2764 | ||
2765 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
2766 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents | |
2767 | + srel->reloc_count)); | |
2768 | ++ srel->reloc_count; | |
2769 | } | |
2770 | ||
2771 | if (h->needs_copy) | |
2772 | { | |
2773 | asection * s; | |
2774 | Elf_Internal_Rela rel; | |
2775 | ||
2776 | /* This symbol needs a copy reloc. Set it up. */ | |
2777 | BFD_ASSERT (h->dynindx != -1 | |
2778 | && (h->root.type == bfd_link_hash_defined | |
2779 | || h->root.type == bfd_link_hash_defweak)); | |
2780 | ||
2781 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2782 | ".rela.bss"); | |
2783 | BFD_ASSERT (s != NULL); | |
2784 | ||
2785 | rel.r_offset = (h->root.u.def.value | |
2786 | + h->root.u.def.section->output_section->vma | |
2787 | + h->root.u.def.section->output_offset); | |
2788 | rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20); | |
2789 | rel.r_addend = 0; | |
2790 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
2791 | (bfd_byte *) ((Elf32_External_Rela *) s->contents | |
2792 | + s->reloc_count)); | |
2793 | ++ s->reloc_count; | |
2794 | } | |
2795 | ||
2796 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2797 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2798 | || h == elf_hash_table (info)->hgot) | |
2799 | sym->st_shndx = SHN_ABS; | |
2800 | ||
2801 | return TRUE; | |
2802 | } | |
2803 | ||
2804 | /* Finish up the dynamic sections. */ | |
2805 | ||
2806 | static bfd_boolean | |
2807 | _bfd_cr16_elf_finish_dynamic_sections (bfd * output_bfd, | |
2808 | struct bfd_link_info * info) | |
2809 | { | |
2810 | bfd * dynobj; | |
2811 | asection * sgot; | |
2812 | asection * sdyn; | |
2813 | ||
2814 | dynobj = elf_hash_table (info)->dynobj; | |
2815 | ||
2816 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2817 | BFD_ASSERT (sgot != NULL); | |
2818 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2819 | ||
2820 | if (elf_hash_table (info)->dynamic_sections_created) | |
2821 | { | |
2822 | Elf32_External_Dyn * dyncon; | |
2823 | Elf32_External_Dyn * dynconend; | |
2824 | ||
2825 | BFD_ASSERT (sdyn != NULL); | |
2826 | ||
2827 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2828 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
2829 | ||
2830 | for (; dyncon < dynconend; dyncon++) | |
2831 | { | |
2832 | Elf_Internal_Dyn dyn; | |
2833 | const char * name; | |
2834 | asection * s; | |
2835 | ||
2836 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2837 | ||
2838 | switch (dyn.d_tag) | |
2839 | { | |
2840 | default: | |
2841 | break; | |
2842 | ||
2843 | case DT_PLTGOT: | |
2844 | name = ".got"; | |
2845 | goto get_vma; | |
2846 | ||
2847 | case DT_JMPREL: | |
2848 | name = ".rela.plt"; | |
2849 | get_vma: | |
2850 | s = bfd_get_section_by_name (output_bfd, name); | |
2851 | BFD_ASSERT (s != NULL); | |
2852 | dyn.d_un.d_ptr = s->vma; | |
2853 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2854 | break; | |
2855 | ||
2856 | case DT_PLTRELSZ: | |
2857 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2858 | BFD_ASSERT (s != NULL); | |
2859 | dyn.d_un.d_val = s->size; | |
2860 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2861 | break; | |
2862 | ||
2863 | case DT_RELASZ: | |
2864 | /* My reading of the SVR4 ABI indicates that the | |
2865 | procedure linkage table relocs (DT_JMPREL) should be | |
2866 | included in the overall relocs (DT_RELA). This is | |
2867 | what Solaris does. However, UnixWare can not handle | |
2868 | that case. Therefore, we override the DT_RELASZ entry | |
2869 | here to make it not include the JMPREL relocs. Since | |
2870 | the linker script arranges for .rela.plt to follow all | |
2871 | other relocation sections, we don't have to worry | |
2872 | about changing the DT_RELA entry. */ | |
2873 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2874 | if (s != NULL) | |
2875 | dyn.d_un.d_val -= s->size; | |
2876 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2877 | break; | |
2878 | } | |
2879 | } | |
2880 | ||
2881 | } | |
2882 | ||
2883 | /* Fill in the first three entries in the global offset table. */ | |
2884 | if (sgot->size > 0) | |
2885 | { | |
2886 | if (sdyn == NULL) | |
2887 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2888 | else | |
2889 | bfd_put_32 (output_bfd, | |
2890 | sdyn->output_section->vma + sdyn->output_offset, | |
2891 | sgot->contents); | |
2892 | } | |
2893 | ||
2894 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2895 | ||
2896 | return TRUE; | |
2897 | } | |
2898 | ||
2899 | /* Given a .data.rel section and a .emreloc in-memory section, store | |
2900 | relocation information into the .emreloc section which can be | |
2901 | used at runtime to relocate the section. This is called by the | |
2902 | linker when the --embedded-relocs switch is used. This is called | |
2903 | after the add_symbols entry point has been called for all the | |
2904 | objects, and before the final_link entry point is called. */ | |
2905 | ||
2906 | bfd_boolean | |
2907 | bfd_cr16_elf32_create_embedded_relocs (bfd *abfd, | |
2908 | struct bfd_link_info *info, | |
2909 | asection *datasec, | |
2910 | asection *relsec, | |
2911 | char **errmsg) | |
2912 | { | |
2913 | Elf_Internal_Shdr *symtab_hdr; | |
2914 | Elf_Internal_Sym *isymbuf = NULL; | |
2915 | Elf_Internal_Rela *internal_relocs = NULL; | |
2916 | Elf_Internal_Rela *irel, *irelend; | |
2917 | bfd_byte *p; | |
2918 | bfd_size_type amt; | |
2919 | ||
2920 | BFD_ASSERT (! info->relocatable); | |
2921 | ||
2922 | *errmsg = NULL; | |
2923 | ||
2924 | if (datasec->reloc_count == 0) | |
2925 | return TRUE; | |
2926 | ||
2927 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2928 | ||
2929 | /* Get a copy of the native relocations. */ | |
2930 | internal_relocs = (_bfd_elf_link_read_relocs | |
2931 | (abfd, datasec, NULL, NULL, info->keep_memory)); | |
2932 | if (internal_relocs == NULL) | |
2933 | goto error_return; | |
2934 | ||
2935 | amt = (bfd_size_type) datasec->reloc_count * 8; | |
2936 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
2937 | if (relsec->contents == NULL) | |
2938 | goto error_return; | |
2939 | ||
2940 | p = relsec->contents; | |
2941 | ||
2942 | irelend = internal_relocs + datasec->reloc_count; | |
2943 | for (irel = internal_relocs; irel < irelend; irel++, p += 8) | |
2944 | { | |
2945 | asection *targetsec; | |
2946 | ||
2947 | /* We are going to write a four byte longword into the runtime | |
2948 | reloc section. The longword will be the address in the data | |
2949 | section which must be relocated. It is followed by the name | |
2950 | of the target section NUL-padded or truncated to 8 | |
2951 | characters. */ | |
2952 | ||
2953 | /* We can only relocate absolute longword relocs at run time. */ | |
2954 | if (!((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a) | |
2955 | || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32))) | |
2956 | { | |
2957 | *errmsg = _("unsupported reloc type"); | |
2958 | bfd_set_error (bfd_error_bad_value); | |
2959 | goto error_return; | |
2960 | } | |
2961 | ||
2962 | /* Get the target section referred to by the reloc. */ | |
2963 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2964 | { | |
2965 | /* A local symbol. */ | |
2966 | Elf_Internal_Sym *isym; | |
2967 | ||
2968 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2969 | if (isymbuf == NULL) | |
2970 | { | |
2971 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2972 | if (isymbuf == NULL) | |
2973 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2974 | symtab_hdr->sh_info, 0, | |
2975 | NULL, NULL, NULL); | |
2976 | if (isymbuf == NULL) | |
2977 | goto error_return; | |
2978 | } | |
2979 | ||
2980 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
2981 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | unsigned long indx; | |
2986 | struct elf_link_hash_entry *h; | |
2987 | ||
2988 | /* An external symbol. */ | |
2989 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2990 | h = elf_sym_hashes (abfd)[indx]; | |
2991 | BFD_ASSERT (h != NULL); | |
2992 | if (h->root.type == bfd_link_hash_defined | |
2993 | || h->root.type == bfd_link_hash_defweak) | |
2994 | targetsec = h->root.u.def.section; | |
2995 | else | |
2996 | targetsec = NULL; | |
2997 | } | |
2998 | ||
2999 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
3000 | memset (p + 4, 0, 4); | |
3001 | if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a) | |
3002 | && (targetsec != NULL) ) | |
3003 | strncpy ((char *) p + 4, targetsec->output_section->name, 4); | |
3004 | } | |
3005 | ||
3006 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3007 | free (isymbuf); | |
3008 | if (internal_relocs != NULL | |
3009 | && elf_section_data (datasec)->relocs != internal_relocs) | |
3010 | free (internal_relocs); | |
3011 | return TRUE; | |
3012 | ||
3013 | error_return: | |
3014 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3015 | free (isymbuf); | |
3016 | if (internal_relocs != NULL | |
3017 | && elf_section_data (datasec)->relocs != internal_relocs) | |
3018 | free (internal_relocs); | |
3019 | return FALSE; | |
3020 | } | |
3021 | ||
3022 | ||
3023 | /* Classify relocation types, such that combreloc can sort them | |
3024 | properly. */ | |
3025 | ||
3026 | static enum elf_reloc_type_class | |
3027 | _bfd_cr16_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
3028 | { | |
3029 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
3030 | { | |
3031 | case R_CR16_GOT_REGREL20: | |
3032 | case R_CR16_GOTC_REGREL20: | |
3033 | return reloc_class_relative; | |
3034 | default: | |
3035 | return reloc_class_normal; | |
3036 | } | |
3037 | } | |
3038 | ||
3d3d428f NC |
3039 | /* Definitions for setting CR16 target vector. */ |
3040 | #define TARGET_LITTLE_SYM bfd_elf32_cr16_vec | |
3041 | #define TARGET_LITTLE_NAME "elf32-cr16" | |
3042 | #define ELF_ARCH bfd_arch_cr16 | |
3043 | #define ELF_MACHINE_CODE EM_CR16 | |
1e1d9f39 | 3044 | #define ELF_MACHINE_ALT1 EM_CR16_OLD |
3d3d428f NC |
3045 | #define ELF_MAXPAGESIZE 0x1 |
3046 | #define elf_symbol_leading_char '_' | |
3047 | ||
3048 | #define bfd_elf32_bfd_reloc_type_lookup elf_cr16_reloc_type_lookup | |
3049 | #define bfd_elf32_bfd_reloc_name_lookup elf_cr16_reloc_name_lookup | |
3050 | #define elf_info_to_howto elf_cr16_info_to_howto | |
3051 | #define elf_info_to_howto_rel 0 | |
3052 | #define elf_backend_relocate_section elf32_cr16_relocate_section | |
3053 | #define bfd_elf32_bfd_relax_section elf32_cr16_relax_section | |
3054 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
3055 | elf32_cr16_get_relocated_section_contents | |
3056 | #define elf_backend_gc_mark_hook elf32_cr16_gc_mark_hook | |
3057 | #define elf_backend_gc_sweep_hook elf32_cr16_gc_sweep_hook | |
3058 | #define elf_backend_can_gc_sections 1 | |
3059 | #define elf_backend_rela_normal 1 | |
99706f30 SR |
3060 | #define elf_backend_check_relocs cr16_elf_check_relocs |
3061 | /* So we can set bits in e_flags. */ | |
3062 | #define elf_backend_final_write_processing \ | |
3063 | _bfd_cr16_elf_final_write_processing | |
3064 | #define elf_backend_object_p _bfd_cr16_elf_object_p | |
3065 | ||
3066 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3067 | _bfd_cr16_elf_merge_private_bfd_data | |
3068 | ||
3069 | ||
3070 | #define bfd_elf32_bfd_link_hash_table_create \ | |
3071 | elf32_cr16_link_hash_table_create | |
3072 | #define bfd_elf32_bfd_link_hash_table_free \ | |
3073 | elf32_cr16_link_hash_table_free | |
3074 | ||
3075 | #define elf_backend_create_dynamic_sections \ | |
3076 | _bfd_cr16_elf_create_dynamic_sections | |
3077 | #define elf_backend_adjust_dynamic_symbol \ | |
3078 | _bfd_cr16_elf_adjust_dynamic_symbol | |
3079 | #define elf_backend_size_dynamic_sections \ | |
3080 | _bfd_cr16_elf_size_dynamic_sections | |
3081 | #define elf_backend_omit_section_dynsym \ | |
3082 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
3083 | #define elf_backend_finish_dynamic_symbol \ | |
3084 | _bfd_cr16_elf_finish_dynamic_symbol | |
3085 | #define elf_backend_finish_dynamic_sections \ | |
3086 | _bfd_cr16_elf_finish_dynamic_sections | |
3087 | ||
3088 | #define elf_backend_reloc_type_class _bfd_cr16_elf_reloc_type_class | |
3089 | ||
3090 | ||
3091 | #define elf_backend_want_got_plt 1 | |
3092 | #define elf_backend_plt_readonly 1 | |
3093 | #define elf_backend_want_plt_sym 0 | |
3094 | #define elf_backend_got_header_size 12 | |
3d3d428f NC |
3095 | |
3096 | #include "elf32-target.h" |