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a8acc5fb NC |
1 | /* Freescale XGATE-specific support for 32-bit ELF |
2 | Copyright 2010, 2011, 2012 | |
3 | Free Software Foundation, Inc. | |
4 | Contributed by Sean Keys(skeys@ipdatasys.com) | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "bfdlink.h" | |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf32-xgate.h" | |
29 | #include "elf/xgate.h" | |
30 | #include "opcode/xgate.h" | |
31 | #include "libiberty.h" | |
32 | ||
33 | /* Relocation functions. */ | |
34 | static reloc_howto_type * | |
35 | bfd_elf32_bfd_reloc_type_lookup (bfd *, bfd_reloc_code_real_type); | |
36 | static reloc_howto_type * | |
37 | bfd_elf32_bfd_reloc_name_lookup (bfd *, const char *); | |
38 | static void | |
39 | xgate_info_to_howto_rel (bfd *, arelent *, Elf_Internal_Rela *); | |
40 | static bfd_boolean | |
41 | xgate_elf_set_mach_from_flags (bfd *); | |
42 | static struct bfd_hash_entry * | |
43 | stub_hash_newfunc (struct bfd_hash_entry *, struct bfd_hash_table *, | |
44 | const char *); | |
45 | static struct bfd_link_hash_table* | |
46 | xgate_elf_bfd_link_hash_table_create (bfd *); | |
47 | ||
48 | /* Use REL instead of RELA to save space */ | |
49 | #define USE_REL 1 | |
50 | ||
51 | static reloc_howto_type elf_xgate_howto_table[] = | |
52 | { | |
53 | /* This reloc does nothing. */ | |
54 | HOWTO (R_XGATE_NONE, /* type */ | |
55 | 0, /* rightshift */ | |
56 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
57 | 32, /* bitsize */ | |
58 | FALSE, /* pc_relative */ | |
59 | 0, /* bitpos */ | |
60 | complain_overflow_dont,/* complain_on_overflow */ | |
61 | bfd_elf_generic_reloc, /* special_function */ | |
62 | "R_XGATE_NONE", /* name */ | |
63 | FALSE, /* partial_inplace */ | |
64 | 0, /* src_mask */ | |
65 | 0, /* dst_mask */ | |
66 | FALSE), /* pcrel_offset */ | |
67 | ||
68 | /* A 8 bit absolute relocation. */ | |
69 | HOWTO (R_XGATE_8, /* type */ | |
70 | 0, /* rightshift */ | |
71 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
72 | 8, /* bitsize */ | |
73 | FALSE, /* pc_relative */ | |
74 | 0, /* bitpos */ | |
75 | complain_overflow_bitfield, /* complain_on_overflow */ | |
76 | bfd_elf_generic_reloc, /* special_function */ | |
77 | "R_XGATE_8", /* name */ | |
78 | FALSE, /* partial_inplace */ | |
79 | 0x00ff, /* src_mask */ | |
80 | 0x00ff, /* dst_mask */ | |
81 | FALSE), /* pcrel_offset */ | |
82 | ||
83 | /* A 8 bit PC-rel relocation. */ | |
84 | HOWTO (R_XGATE_PCREL_8, /* type */ | |
85 | 0, /* rightshift */ | |
86 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
87 | 8, /* bitsize */ | |
88 | TRUE, /* pc_relative */ | |
89 | 0, /* bitpos */ | |
90 | complain_overflow_bitfield, /* complain_on_overflow */ | |
91 | bfd_elf_generic_reloc, /* special_function */ | |
92 | "R_XGATE_PCREL_8", /* name */ | |
93 | FALSE, /* partial_inplace */ | |
94 | 0x00ff, /* src_mask */ | |
95 | 0x00ff, /* dst_mask */ | |
96 | TRUE), /* pcrel_offset */ | |
97 | ||
98 | /* A 16 bit absolute relocation. */ | |
99 | HOWTO (R_XGATE_16, /* type */ | |
100 | 0, /* rightshift */ | |
101 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
102 | 16, /* bitsize */ | |
103 | FALSE, /* pc_relative */ | |
104 | 0, /* bitpos */ | |
105 | complain_overflow_dont /*bitfield */, /* complain_on_overflow */ | |
106 | bfd_elf_generic_reloc, /* special_function */ | |
107 | "R_XGATE_16", /* name */ | |
108 | FALSE, /* partial_inplace */ | |
109 | 0x00ff, /* src_mask */ | |
110 | 0x00ff, /* dst_mask */ | |
111 | FALSE), /* pcrel_offset */ | |
112 | ||
113 | /* A 32 bit absolute relocation. This one is never used for the | |
114 | code relocation. It's used by gas for -gstabs generation. */ | |
115 | HOWTO (R_XGATE_32, /* type */ | |
116 | 0, /* rightshift */ | |
117 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
118 | 32, /* bitsize */ | |
119 | FALSE, /* pc_relative */ | |
120 | 0, /* bitpos */ | |
121 | complain_overflow_bitfield, /* complain_on_overflow */ | |
122 | bfd_elf_generic_reloc, /* special_function */ | |
123 | "R_XGATE_32", /* name */ | |
124 | FALSE, /* partial_inplace */ | |
125 | 0xffffffff, /* src_mask */ | |
126 | 0xffffffff, /* dst_mask */ | |
127 | FALSE), /* pcrel_offset */ | |
128 | ||
129 | /* A 16 bit PC-rel relocation. */ | |
130 | HOWTO (R_XGATE_PCREL_16, /* type */ | |
131 | 0, /* rightshift */ | |
132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
133 | 16, /* bitsize */ | |
134 | TRUE, /* pc_relative */ | |
135 | 0, /* bitpos */ | |
136 | complain_overflow_dont, /* complain_on_overflow */ | |
137 | bfd_elf_generic_reloc, /* special_function */ | |
138 | "R_XGATE_PCREL_16", /* name */ | |
139 | FALSE, /* partial_inplace */ | |
140 | 0xffff, /* src_mask */ | |
141 | 0xffff, /* dst_mask */ | |
142 | TRUE), /* pcrel_offset */ | |
143 | ||
144 | /* GNU extension to record C++ vtable hierarchy. */ | |
145 | HOWTO (R_XGATE_GNU_VTINHERIT, /* type */ | |
146 | 0, /* rightshift */ | |
147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
148 | 0, /* bitsize */ | |
149 | FALSE, /* pc_relative */ | |
150 | 0, /* bitpos */ | |
151 | complain_overflow_dont, /* complain_on_overflow */ | |
152 | NULL, /* special_function */ | |
153 | "R_XGATE_GNU_VTINHERIT", /* name */ | |
154 | FALSE, /* partial_inplace */ | |
155 | 0, /* src_mask */ | |
156 | 0, /* dst_mask */ | |
157 | FALSE), /* pcrel_offset */ | |
158 | ||
159 | /* GNU extension to record C++ vtable member usage. */ | |
160 | HOWTO (R_XGATE_GNU_VTENTRY, /* type */ | |
161 | 0, /* rightshift */ | |
162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
163 | 0, /* bitsize */ | |
164 | FALSE, /* pc_relative */ | |
165 | 0, /* bitpos */ | |
166 | complain_overflow_dont, /* complain_on_overflow */ | |
167 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
168 | "R_XGATE_GNU_VTENTRY", /* name */ | |
169 | FALSE, /* partial_inplace */ | |
170 | 0, /* src_mask */ | |
171 | 0, /* dst_mask */ | |
172 | FALSE), /* pcrel_offset */ | |
173 | ||
174 | /* A 24 bit relocation. */ | |
175 | HOWTO (R_XGATE_24, /* type */ | |
176 | 0, /* rightshift */ | |
177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
178 | 16, /* bitsize */ | |
179 | FALSE, /* pc_relative */ | |
180 | 0, /* bitpos */ | |
181 | complain_overflow_dont, /* complain_on_overflow */ | |
182 | bfd_elf_generic_reloc, /* special_function */ | |
183 | "R_XGATE_IMM8_LO", /* name */ | |
184 | FALSE, /* partial_inplace */ | |
185 | 0x00ff, /* src_mask */ | |
186 | 0x00ff, /* dst_mask */ | |
187 | FALSE), /* pcrel_offset */ | |
188 | ||
189 | /* A 16-bit low relocation. */ | |
190 | HOWTO (R_XGATE_LO16, /* type */ | |
191 | 8, /* rightshift */ | |
192 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
193 | 16, /* bitsize */ | |
194 | FALSE, /* pc_relative */ | |
195 | 0, /* bitpos */ | |
196 | complain_overflow_dont, /* complain_on_overflow */ | |
197 | bfd_elf_generic_reloc, /* special_function */ | |
198 | "R_XGATE_IMM8_HI", /* name */ | |
199 | FALSE, /* partial_inplace */ | |
200 | 0x00ff, /* src_mask */ | |
201 | 0x00ff, /* dst_mask */ | |
202 | FALSE), /* pcrel_offset */ | |
203 | ||
204 | /* A page relocation. */ | |
205 | HOWTO (R_XGATE_GPAGE, /* type */ | |
206 | 0, /* rightshift */ | |
207 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
208 | 8, /* bitsize */ | |
209 | FALSE, /* pc_relative */ | |
210 | 0, /* bitpos */ | |
211 | complain_overflow_dont, /* complain_on_overflow */ | |
212 | xgate_elf_special_reloc,/* special_function */ | |
213 | "R_XGATE_GPAGE", /* name */ | |
214 | FALSE, /* partial_inplace */ | |
215 | 0x00ff, /* src_mask */ | |
216 | 0x00ff, /* dst_mask */ | |
217 | FALSE), /* pcrel_offset */ | |
218 | ||
219 | /* A 9 bit absolute relocation. */ | |
220 | HOWTO (R_XGATE_PCREL_9, /* type */ | |
221 | 0, /* rightshift */ | |
222 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
223 | 9, /* bitsize */ | |
224 | TRUE, /* pc_relative */ | |
225 | 0, /* bitpos */ | |
226 | complain_overflow_bitfield, /* complain_on_overflow */ | |
227 | bfd_elf_generic_reloc, /* special_function */ | |
228 | "R_XGATE_PCREL_9", /* name */ | |
229 | FALSE, /* partial_inplace */ | |
230 | 0xffff, /* src_mask */ | |
231 | 0xffff, /* dst_mask */ | |
232 | TRUE), /* pcrel_offset */ | |
233 | ||
234 | /* A 8 bit absolute relocation (upper address). */ | |
235 | HOWTO (R_XGATE_PCREL_10, /* type */ | |
236 | 8, /* rightshift */ | |
237 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 10, /* bitsize */ | |
239 | TRUE, /* pc_relative */ | |
240 | 0, /* bitpos */ | |
241 | complain_overflow_dont, /* complain_on_overflow */ | |
242 | bfd_elf_generic_reloc, /* special_function */ | |
243 | "R_XGATE_PCREL_10", /* name */ | |
244 | FALSE, /* partial_inplace */ | |
245 | 0x00ff, /* src_mask */ | |
246 | 0x00ff, /* dst_mask */ | |
247 | TRUE), /* pcrel_offset */ | |
248 | ||
249 | /* A 8 bit absolute relocation. */ | |
250 | HOWTO (R_XGATE_IMM8_LO, /* type */ | |
251 | 0, /* rightshift */ | |
252 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
253 | 16, /* bitsize */ | |
254 | FALSE, /* pc_relative */ | |
255 | 0, /* bitpos */ | |
256 | complain_overflow_dont, /* complain_on_overflow */ | |
257 | bfd_elf_generic_reloc, /* special_function */ | |
258 | "R_XGATE_IMM8_LO", /* name */ | |
259 | FALSE, /* partial_inplace */ | |
260 | 0xffff, /* src_mask */ | |
261 | 0xffff, /* dst_mask */ | |
262 | FALSE), /* pcrel_offset */ | |
263 | ||
264 | /* A 16 bit absolute relocation (upper address). */ | |
265 | HOWTO (R_XGATE_IMM8_HI, /* type */ | |
266 | 8, /* rightshift */ | |
267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 16, /* bitsize */ | |
269 | FALSE, /* pc_relative */ | |
270 | 0, /* bitpos */ | |
271 | complain_overflow_dont, /* complain_on_overflow */ | |
272 | bfd_elf_generic_reloc, /* special_function */ | |
273 | "R_XGATE_IMM8_HI", /* name */ | |
274 | FALSE, /* partial_inplace */ | |
275 | 0x00ff, /* src_mask */ | |
276 | 0x00ff, /* dst_mask */ | |
277 | FALSE), /* pcrel_offset */ | |
278 | ||
279 | /* A 3 bit absolute relocation. */ | |
280 | HOWTO (R_XGATE_IMM3, /* type */ | |
281 | 8, /* rightshift */ | |
282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 16, /* bitsize */ | |
284 | FALSE, /* pc_relative */ | |
285 | 0, /* bitpos */ | |
286 | complain_overflow_dont, /* complain_on_overflow */ | |
287 | bfd_elf_generic_reloc, /* special_function */ | |
288 | "R_XGATE_IMM3", /* name */ | |
289 | FALSE, /* partial_inplace */ | |
290 | 0x00ff, /* src_mask */ | |
291 | 0x00ff, /* dst_mask */ | |
292 | FALSE), /* pcrel_offset */ | |
293 | ||
294 | /* A 4 bit absolute relocation. */ | |
295 | HOWTO (R_XGATE_IMM4, /* type */ | |
296 | 8, /* rightshift */ | |
297 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
298 | 16, /* bitsize */ | |
299 | FALSE, /* pc_relative */ | |
300 | 0, /* bitpos */ | |
301 | complain_overflow_dont, /* complain_on_overflow */ | |
302 | bfd_elf_generic_reloc, /* special_function */ | |
303 | "R_XGATE_IMM4", /* name */ | |
304 | FALSE, /* partial_inplace */ | |
305 | 0x00ff, /* src_mask */ | |
306 | 0x00ff, /* dst_mask */ | |
307 | FALSE), /* pcrel_offset */ | |
308 | ||
309 | /* A 5 bit absolute relocation. */ | |
310 | HOWTO (R_XGATE_IMM5, /* type */ | |
311 | 8, /* rightshift */ | |
312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 16, /* bitsize */ | |
314 | FALSE, /* pc_relative */ | |
315 | 0, /* bitpos */ | |
316 | complain_overflow_dont, /* complain_on_overflow */ | |
317 | bfd_elf_generic_reloc, /* special_function */ | |
318 | "R_XGATE_IMM5", /* name */ | |
319 | FALSE, /* partial_inplace */ | |
320 | 0x00ff, /* src_mask */ | |
321 | 0x00ff, /* dst_mask */ | |
322 | FALSE), /* pcrel_offset */ | |
323 | ||
324 | /* Mark beginning of a jump instruction (any form). */ | |
325 | HOWTO (R_XGATE_RL_JUMP, /* type */ | |
326 | 0, /* rightshift */ | |
327 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
328 | 0, /* bitsize */ | |
329 | FALSE, /* pc_relative */ | |
330 | 0, /* bitpos */ | |
331 | complain_overflow_dont, /* complain_on_overflow */ | |
332 | xgate_elf_ignore_reloc, /* special_function */ | |
333 | "R_XGATE_RL_JUMP", /* name */ | |
334 | TRUE, /* partial_inplace */ | |
335 | 0, /* src_mask */ | |
336 | 0, /* dst_mask */ | |
337 | TRUE), /* pcrel_offset */ | |
338 | ||
339 | /* Mark beginning of Gcc relaxation group instruction. */ | |
340 | HOWTO (R_XGATE_RL_GROUP, /* type */ | |
341 | 0, /* rightshift */ | |
342 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
343 | 0, /* bitsize */ | |
344 | FALSE, /* pc_relative */ | |
345 | 0, /* bitpos */ | |
346 | complain_overflow_dont, /* complain_on_overflow */ | |
347 | xgate_elf_ignore_reloc, /* special_function */ | |
348 | "R_XGATE_RL_GROUP", /* name */ | |
349 | TRUE, /* partial_inplace */ | |
350 | 0, /* src_mask */ | |
351 | 0, /* dst_mask */ | |
352 | TRUE), /* pcrel_offset */ | |
353 | }; | |
354 | ||
355 | /* Map BFD reloc types to XGATE ELF reloc types. */ | |
356 | ||
357 | struct xgate_reloc_map | |
358 | { | |
359 | bfd_reloc_code_real_type bfd_reloc_val; | |
360 | unsigned char elf_reloc_val; | |
361 | }; | |
362 | ||
363 | static const struct xgate_reloc_map xgate_reloc_map[] = | |
364 | { | |
365 | {BFD_RELOC_NONE, R_XGATE_NONE}, | |
366 | {BFD_RELOC_8, R_XGATE_8}, | |
367 | {BFD_RELOC_8_PCREL, R_XGATE_PCREL_8}, | |
368 | {BFD_RELOC_16_PCREL, R_XGATE_PCREL_16}, | |
369 | {BFD_RELOC_16, R_XGATE_16}, | |
370 | {BFD_RELOC_32, R_XGATE_32}, | |
371 | ||
372 | {BFD_RELOC_VTABLE_INHERIT, R_XGATE_GNU_VTINHERIT}, | |
373 | {BFD_RELOC_VTABLE_ENTRY, R_XGATE_GNU_VTENTRY}, | |
374 | ||
375 | {BFD_RELOC_XGATE_LO16, R_XGATE_LO16}, | |
376 | {BFD_RELOC_XGATE_GPAGE, R_XGATE_GPAGE}, | |
377 | {BFD_RELOC_XGATE_24, R_XGATE_24}, | |
378 | {BFD_RELOC_XGATE_PCREL_9, R_XGATE_PCREL_9}, | |
379 | {BFD_RELOC_XGATE_PCREL_10, R_XGATE_PCREL_10}, | |
380 | {BFD_RELOC_XGATE_IMM8_LO, R_XGATE_IMM8_LO}, | |
381 | {BFD_RELOC_XGATE_IMM8_HI, R_XGATE_IMM8_HI}, | |
382 | {BFD_RELOC_XGATE_IMM3, R_XGATE_IMM3}, | |
383 | {BFD_RELOC_XGATE_IMM4, R_XGATE_IMM4}, | |
384 | {BFD_RELOC_XGATE_IMM5, R_XGATE_IMM5}, | |
385 | ||
386 | {BFD_RELOC_XGATE_RL_JUMP, R_XGATE_RL_JUMP}, | |
387 | {BFD_RELOC_XGATE_RL_GROUP, R_XGATE_RL_GROUP}, | |
388 | }; | |
389 | ||
390 | static reloc_howto_type * | |
391 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
392 | bfd_reloc_code_real_type code) | |
393 | { | |
394 | unsigned int i; | |
395 | ||
396 | for (i = 0; i < ARRAY_SIZE (xgate_reloc_map); i++) | |
397 | if (xgate_reloc_map[i].bfd_reloc_val == code) | |
398 | return &elf_xgate_howto_table[xgate_reloc_map[i].elf_reloc_val]; | |
399 | ||
400 | return NULL; | |
401 | } | |
402 | ||
403 | static reloc_howto_type * | |
404 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
405 | { | |
406 | unsigned int i; | |
407 | ||
408 | for (i = 0; i < ARRAY_SIZE (elf_xgate_howto_table); i++) | |
409 | if (elf_xgate_howto_table[i].name != NULL | |
410 | && strcasecmp (elf_xgate_howto_table[i].name, r_name) == 0) | |
411 | return &elf_xgate_howto_table[i]; | |
412 | ||
413 | return NULL; | |
414 | } | |
415 | ||
416 | /* Set the howto pointer for an XGATE ELF reloc. */ | |
417 | ||
418 | static void | |
419 | xgate_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
420 | arelent *cache_ptr, | |
421 | Elf_Internal_Rela *dst) | |
422 | { | |
423 | unsigned int r_type; | |
424 | ||
425 | r_type = ELF32_R_TYPE (dst->r_info); | |
426 | BFD_ASSERT(r_type < (unsigned int) R_XGATE_max); | |
427 | cache_ptr->howto = &elf_xgate_howto_table[r_type]; | |
428 | } | |
429 | ||
430 | /* Free the derived linker hash table. */ | |
431 | ||
432 | void | |
433 | xgate_elf_bfd_link_hash_table_free (struct bfd_link_hash_table *hash) | |
434 | { | |
435 | struct xgate_elf_link_hash_table *ret = | |
436 | (struct xgate_elf_link_hash_table *) hash; | |
437 | ||
438 | bfd_hash_table_free (ret->stub_hash_table); | |
439 | free (ret->stub_hash_table); | |
440 | _bfd_generic_link_hash_table_free (hash); | |
441 | } | |
442 | ||
443 | /* Create a XGATE ELF linker hash table. */ | |
444 | ||
445 | static struct bfd_link_hash_table* | |
446 | xgate_elf_bfd_link_hash_table_create (bfd *abfd) | |
447 | { | |
448 | struct xgate_elf_link_hash_table *ret; | |
449 | bfd_size_type amt = sizeof(struct xgate_elf_link_hash_table); | |
450 | ||
451 | ret = (struct xgate_elf_link_hash_table *) bfd_malloc (amt); | |
452 | if (ret == (struct xgate_elf_link_hash_table *) NULL) | |
453 | return NULL; | |
454 | ||
455 | memset (ret, 0, amt); | |
456 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
457 | _bfd_elf_link_hash_newfunc, sizeof(struct elf_link_hash_entry), | |
458 | XGATE_ELF_DATA)) | |
459 | { | |
460 | free (ret); | |
461 | return NULL; | |
462 | } | |
463 | ||
464 | /* Init the stub hash table too. */ | |
465 | amt = sizeof(struct bfd_hash_table); | |
466 | ret->stub_hash_table = (struct bfd_hash_table*) bfd_malloc (amt); | |
467 | if (ret->stub_hash_table == NULL) | |
468 | { | |
469 | free (ret); | |
470 | return NULL; | |
471 | } | |
472 | ||
473 | if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc, | |
474 | sizeof(struct elf32_xgate_stub_hash_entry))) | |
475 | return NULL; | |
476 | ||
477 | ret->stub_bfd = NULL; | |
478 | ret->stub_section = 0; | |
479 | ret->add_stub_section = NULL; | |
480 | ret->sym_cache.abfd = NULL; | |
481 | ||
482 | return &ret->root.root; | |
483 | } | |
484 | ||
485 | static bfd_boolean | |
486 | xgate_elf_set_mach_from_flags (bfd *abfd ATTRIBUTE_UNUSED) | |
487 | { | |
488 | return TRUE; | |
489 | } | |
490 | ||
491 | /* Specific sections: | |
492 | - The .page0 is a data section that is mapped in [0x0000..0x00FF]. | |
493 | Page0 accesses are faster on the M68HC12. | |
494 | - The .vectors is the section that represents the interrupt | |
495 | vectors. | |
496 | - The .xgate section is starts in 0xE08800 or as xgate sees it 0x0800. */ | |
497 | static const struct bfd_elf_special_section elf32_xgate_special_sections[] = | |
498 | { | |
499 | { STRING_COMMA_LEN (".eeprom"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
500 | { STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
501 | { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
502 | { STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
503 | /*{ STRING_COMMA_LEN (".xgate"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
504 | TODO finish this implementation */ | |
505 | { NULL, 0, 0, 0, 0 } | |
506 | }; | |
507 | ||
508 | struct xgate_scan_param | |
509 | { | |
510 | struct xgate_page_info* pinfo; | |
511 | bfd_boolean use_memory_banks; | |
512 | }; | |
513 | ||
514 | /* Assorted hash table functions. */ | |
515 | ||
516 | /* Initialize an entry in the stub hash table. */ | |
517 | ||
518 | static struct bfd_hash_entry * | |
519 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
520 | struct bfd_hash_table *table ATTRIBUTE_UNUSED, | |
521 | const char *string ATTRIBUTE_UNUSED) | |
522 | { | |
523 | return entry; | |
524 | } | |
525 | ||
526 | /* Hook called by the linker routine which adds symbols from an object | |
527 | file. */ | |
528 | ||
529 | bfd_boolean | |
530 | elf32_xgate_add_symbol_hook (bfd *abfd ATTRIBUTE_UNUSED, | |
531 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
532 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED, | |
533 | const char **namep ATTRIBUTE_UNUSED, | |
534 | flagword *flagsp ATTRIBUTE_UNUSED, | |
535 | asection **secp ATTRIBUTE_UNUSED, | |
536 | bfd_vma *valp ATTRIBUTE_UNUSED) | |
537 | { | |
538 | return TRUE; | |
539 | } | |
540 | ||
541 | /* External entry points for sizing and building linker stubs. */ | |
542 | ||
543 | /* Set up various things so that we can make a list of input sections | |
544 | for each output section included in the link. Returns -1 on error, | |
545 | 0 when no stubs will be needed, and 1 on success. */ | |
546 | ||
547 | int | |
548 | elf32_xgate_setup_section_lists (bfd *output_bfd ATTRIBUTE_UNUSED, | |
549 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
550 | { | |
551 | return 1; | |
552 | } | |
553 | ||
554 | /* Determine and set the size of the stub section for a final link. | |
555 | The basic idea here is to examine all the relocations looking for | |
556 | PC-relative calls to a target that is unreachable with any "9-bit PC-REL" | |
557 | instruction. */ | |
558 | ||
559 | bfd_boolean | |
560 | elf32_xgate_size_stubs (bfd *output_bfd ATTRIBUTE_UNUSED, | |
561 | bfd *stub_bfd ATTRIBUTE_UNUSED, | |
562 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
563 | asection * (*add_stub_section) (const char*, asection*) ATTRIBUTE_UNUSED) | |
564 | { | |
565 | return FALSE; | |
566 | } | |
567 | ||
568 | /* Build all the stubs associated with the current output file. The | |
569 | stubs are kept in a hash table attached to the main linker hash | |
570 | table. This function is called via xgateelf_finish in the | |
571 | linker. */ | |
572 | ||
573 | bfd_boolean | |
574 | elf32_xgate_build_stubs (bfd *abfd ATTRIBUTE_UNUSED, | |
575 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
576 | { | |
577 | return TRUE; | |
578 | } | |
579 | ||
580 | void | |
581 | xgate_elf_get_bank_parameters (struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
582 | { | |
583 | return; | |
584 | } | |
585 | ||
586 | /* This function is used for relocs which are only used for relaxing, | |
587 | which the linker should otherwise ignore. */ | |
588 | ||
589 | bfd_reloc_status_type | |
590 | xgate_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
591 | arelent *reloc_entry, | |
592 | asymbol *symbol ATTRIBUTE_UNUSED, | |
593 | void *data ATTRIBUTE_UNUSED, | |
594 | asection *input_section, | |
595 | bfd *output_bfd, | |
596 | char **error_message ATTRIBUTE_UNUSED) | |
597 | { | |
598 | if (output_bfd != NULL) | |
599 | reloc_entry->address += input_section->output_offset; | |
600 | return bfd_reloc_ok; | |
601 | } | |
602 | ||
603 | bfd_reloc_status_type | |
604 | xgate_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
605 | arelent *reloc_entry ATTRIBUTE_UNUSED, | |
606 | asymbol *symbol ATTRIBUTE_UNUSED, | |
607 | void *data ATTRIBUTE_UNUSED, | |
608 | asection *input_section ATTRIBUTE_UNUSED, | |
609 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
610 | char **error_message ATTRIBUTE_UNUSED) | |
611 | { | |
612 | abort (); | |
613 | } | |
614 | ||
615 | /* Look through the relocs for a section during the first phase. | |
616 | Since we don't do .gots or .plts, we just need to consider the | |
617 | virtual table relocs for gc. */ | |
618 | ||
619 | bfd_boolean | |
620 | elf32_xgate_check_relocs (bfd *abfd ATTRIBUTE_UNUSED, | |
621 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
622 | asection *sec ATTRIBUTE_UNUSED, | |
623 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
624 | { | |
625 | return TRUE; | |
626 | } | |
627 | ||
628 | /* Relocate a XGATE/S12x ELF section. */ | |
629 | ||
630 | bfd_boolean | |
631 | elf32_xgate_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
632 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
633 | bfd *input_bfd ATTRIBUTE_UNUSED, | |
634 | asection *input_section ATTRIBUTE_UNUSED, | |
635 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
636 | Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED, | |
637 | Elf_Internal_Sym *local_syms ATTRIBUTE_UNUSED, | |
638 | asection **local_sections ATTRIBUTE_UNUSED) | |
639 | { | |
640 | return TRUE; | |
641 | } | |
642 | ||
643 | /* Set and control ELF flags in ELF header. */ | |
644 | ||
645 | bfd_boolean | |
646 | _bfd_xgate_elf_set_private_flags (bfd *abfd ATTRIBUTE_UNUSED, | |
647 | flagword flags ATTRIBUTE_UNUSED) | |
648 | { | |
649 | return TRUE; | |
650 | } | |
651 | ||
652 | /* Merge backend specific data from an object file to the output | |
653 | object file when linking. */ | |
654 | ||
655 | bfd_boolean | |
656 | _bfd_xgate_elf_merge_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
657 | bfd *obfd ATTRIBUTE_UNUSED) | |
658 | { | |
659 | return TRUE; | |
660 | } | |
661 | ||
662 | bfd_boolean | |
663 | _bfd_xgate_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
664 | { | |
665 | FILE *file = (FILE *) ptr; | |
666 | ||
667 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
668 | ||
669 | /* Print normal ELF private data. */ | |
670 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
671 | ||
672 | /* xgettext:c-format */ | |
673 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
674 | ||
675 | if (elf_elfheader (abfd)->e_flags & E_XGATE_I32) | |
676 | fprintf (file, _("[abi=32-bit int, ")); | |
677 | else | |
678 | fprintf (file, _("[abi=16-bit int, ")); | |
679 | ||
680 | if (elf_elfheader (abfd)->e_flags & E_XGATE_F64) | |
681 | fprintf (file, _("64-bit double, ")); | |
682 | else | |
683 | fprintf (file, _("32-bit double, ")); | |
684 | if (elf_elfheader (abfd)->e_flags & EF_XGATE_MACH) | |
685 | fprintf (file, _("cpu=XGATE]")); | |
686 | else | |
687 | fprintf (file, _("error reading cpu type from elf private data")); | |
688 | fputc ('\n', file); | |
689 | ||
690 | return TRUE; | |
691 | } | |
692 | ||
693 | void | |
694 | elf32_xgate_post_process_headers (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
695 | { | |
696 | ||
697 | } | |
698 | ||
699 | #define ELF_ARCH bfd_arch_xgate | |
700 | #define ELF_MACHINE_CODE EM_XGATE | |
701 | #define ELF_TARGET_ID XGATE_ELF_DATA | |
702 | ||
703 | #define ELF_MAXPAGESIZE 0x1000 | |
704 | ||
705 | #define TARGET_BIG_SYM bfd_elf32_xgate_vec | |
706 | #define TARGET_BIG_NAME "elf32-xgate" | |
707 | ||
708 | #define elf_info_to_howto 0 | |
709 | #define elf_info_to_howto_rel xgate_info_to_howto_rel | |
710 | #define elf_backend_check_relocs elf32_xgate_check_relocs | |
711 | #define elf_backend_relocate_section elf32_xgate_relocate_section | |
712 | #define elf_backend_object_p xgate_elf_set_mach_from_flags | |
713 | #define elf_backend_final_write_processing 0 | |
714 | #define elf_backend_can_gc_sections 1 | |
715 | #define elf_backend_special_sections elf32_xgate_special_sections | |
716 | #define elf_backend_post_process_headers elf32_xgate_post_process_headers | |
717 | #define elf_backend_add_symbol_hook elf32_xgate_add_symbol_hook | |
718 | ||
719 | #define bfd_elf32_bfd_link_hash_table_create xgate_elf_bfd_link_hash_table_create | |
720 | #define bfd_elf32_bfd_link_hash_table_free xgate_elf_bfd_link_hash_table_free | |
721 | #define bfd_elf32_bfd_merge_private_bfd_data _bfd_xgate_elf_merge_private_bfd_data | |
722 | #define bfd_elf32_bfd_set_private_flags _bfd_xgate_elf_set_private_flags | |
723 | #define bfd_elf32_bfd_print_private_bfd_data _bfd_xgate_elf_print_private_bfd_data | |
724 | ||
725 | #define xgate_stub_hash_lookup(table, string, create, copy) \ | |
726 | ((struct elf32_xgate_stub_hash_entry *) \ | |
727 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
728 | ||
729 | #include "elf32-target.h" |