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1 | /* FRV-specific support for 32-bit ELF. |
2 | Copyright (C) 2002 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "bfd.h" | |
21 | #include "sysdep.h" | |
22 | #include "libbfd.h" | |
23 | #include "elf-bfd.h" | |
24 | #include "elf/frv.h" | |
25 | ||
26 | /* Forward declarations. */ | |
27 | static bfd_reloc_status_type elf32_frv_relocate_lo16 | |
28 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
29 | static bfd_reloc_status_type elf32_frv_relocate_hi16 | |
30 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
31 | static bfd_reloc_status_type elf32_frv_relocate_label24 | |
32 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
33 | static bfd_reloc_status_type elf32_frv_relocate_gprel12 | |
34 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
35 | static bfd_reloc_status_type elf32_frv_relocate_gprelu12 | |
36 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
37 | static bfd_reloc_status_type elf32_frv_relocate_gprello | |
38 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
39 | static bfd_reloc_status_type elf32_frv_relocate_gprelhi | |
40 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
41 | static reloc_howto_type *frv_reloc_type_lookup | |
42 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
43 | static void frv_info_to_howto_rela | |
44 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
45 | static boolean elf32_frv_relocate_section | |
46 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
47 | static boolean elf32_frv_add_symbol_hook | |
48 | PARAMS (( bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, const char **, flagword *, asection **, bfd_vma *)); | |
49 | static bfd_reloc_status_type frv_final_link_relocate | |
50 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma)); | |
51 | static boolean elf32_frv_gc_sweep_hook | |
52 | PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *)); | |
53 | static asection * elf32_frv_gc_mark_hook | |
54 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
55 | static boolean elf32_frv_check_relocs | |
56 | PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *)); | |
57 | static int elf32_frv_machine PARAMS ((bfd *)); | |
58 | static boolean elf32_frv_object_p PARAMS ((bfd *)); | |
59 | static boolean frv_elf_set_private_flags PARAMS ((bfd *, flagword)); | |
60 | static boolean frv_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); | |
61 | static boolean frv_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
62 | static boolean frv_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); | |
63 | ||
64 | static reloc_howto_type elf32_frv_howto_table [] = | |
65 | { | |
66 | /* This reloc does nothing. */ | |
67 | HOWTO (R_FRV_NONE, /* type */ | |
68 | 0, /* rightshift */ | |
69 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
70 | 32, /* bitsize */ | |
71 | false, /* pc_relative */ | |
72 | 0, /* bitpos */ | |
73 | complain_overflow_bitfield, /* complain_on_overflow */ | |
74 | bfd_elf_generic_reloc, /* special_function */ | |
75 | "R_FRV_NONE", /* name */ | |
76 | false, /* partial_inplace */ | |
77 | 0, /* src_mask */ | |
78 | 0, /* dst_mask */ | |
79 | false), /* pcrel_offset */ | |
80 | ||
81 | /* A 32 bit absolute relocation. */ | |
82 | HOWTO (R_FRV_32, /* type */ | |
83 | 0, /* rightshift */ | |
84 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
85 | 32, /* bitsize */ | |
86 | false, /* pc_relative */ | |
87 | 0, /* bitpos */ | |
88 | complain_overflow_bitfield, /* complain_on_overflow */ | |
89 | bfd_elf_generic_reloc, /* special_function */ | |
90 | "R_FRV_32", /* name */ | |
91 | false, /* partial_inplace */ | |
92 | 0xffffffff, /* src_mask */ | |
93 | 0xffffffff, /* dst_mask */ | |
94 | false), /* pcrel_offset */ | |
95 | ||
96 | /* A 16 bit pc-relative relocation. */ | |
97 | HOWTO (R_FRV_LABEL16, /* type */ | |
98 | 0, /* rightshift */ | |
99 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
100 | 16, /* bitsize */ | |
101 | true, /* pc_relative */ | |
102 | 0, /* bitpos */ | |
103 | complain_overflow_bitfield, /* complain_on_overflow */ | |
104 | bfd_elf_generic_reloc, /* special_function */ | |
105 | "R_FRV_LABEL16", /* name */ | |
106 | false, /* partial_inplace */ | |
107 | 0xffff, /* src_mask */ | |
108 | 0xffff, /* dst_mask */ | |
109 | true), /* pcrel_offset */ | |
110 | ||
111 | /* A 24-bit pc-relative relocation. */ | |
112 | HOWTO (R_FRV_LABEL24, /* type */ | |
113 | 2, /* rightshift */ | |
114 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 26, /* bitsize */ | |
116 | true, /* pc_relative */ | |
117 | 0, /* bitpos */ | |
118 | complain_overflow_bitfield, /* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_FRV_LABEL24", /* name */ | |
121 | false, /* partial_inplace */ | |
122 | 0x7e03ffff, /* src_mask */ | |
123 | 0x7e03ffff, /* dst_mask */ | |
124 | true), /* pcrel_offset */ | |
125 | ||
126 | HOWTO (R_FRV_LO16, /* type */ | |
127 | 0, /* rightshift */ | |
128 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
129 | 16, /* bitsize */ | |
130 | false, /* pc_relative */ | |
131 | 0, /* bitpos */ | |
132 | complain_overflow_dont, /* complain_on_overflow */ | |
133 | bfd_elf_generic_reloc, /* special_function */ | |
134 | "R_FRV_LO16", /* name */ | |
135 | false, /* partial_inplace */ | |
136 | 0xffff, /* src_mask */ | |
137 | 0xffff, /* dst_mask */ | |
138 | false), /* pcrel_offset */ | |
139 | ||
140 | HOWTO (R_FRV_HI16, /* type */ | |
141 | 0, /* rightshift */ | |
142 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
143 | 16, /* bitsize */ | |
144 | false, /* pc_relative */ | |
145 | 0, /* bitpos */ | |
146 | complain_overflow_dont, /* complain_on_overflow */ | |
147 | bfd_elf_generic_reloc, /* special_function */ | |
148 | "R_FRV_HI16", /* name */ | |
149 | false, /* partial_inplace */ | |
150 | 0xffff, /* src_mask */ | |
151 | 0xffff, /* dst_mask */ | |
152 | false), /* pcrel_offset */ | |
153 | ||
154 | HOWTO (R_FRV_GPREL12, /* type */ | |
155 | 0, /* rightshift */ | |
156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
157 | 12, /* bitsize */ | |
158 | false, /* pc_relative */ | |
159 | 0, /* bitpos */ | |
160 | complain_overflow_dont, /* complain_on_overflow */ | |
161 | bfd_elf_generic_reloc, /* special_function */ | |
162 | "R_FRV_GPREL12", /* name */ | |
163 | false, /* partial_inplace */ | |
164 | 0xfff, /* src_mask */ | |
165 | 0xfff, /* dst_mask */ | |
166 | false), /* pcrel_offset */ | |
167 | ||
168 | HOWTO (R_FRV_GPRELU12, /* type */ | |
169 | 0, /* rightshift */ | |
170 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
171 | 12, /* bitsize */ | |
172 | false, /* pc_relative */ | |
173 | 0, /* bitpos */ | |
174 | complain_overflow_dont, /* complain_on_overflow */ | |
175 | bfd_elf_generic_reloc, /* special_function */ | |
176 | "R_FRV_GPRELU12", /* name */ | |
177 | false, /* partial_inplace */ | |
178 | 0xfff, /* src_mask */ | |
179 | 0x3f03f, /* dst_mask */ | |
180 | false), /* pcrel_offset */ | |
181 | ||
182 | HOWTO (R_FRV_GPREL32, /* type */ | |
183 | 0, /* rightshift */ | |
184 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
185 | 32, /* bitsize */ | |
186 | false, /* pc_relative */ | |
187 | 0, /* bitpos */ | |
188 | complain_overflow_dont, /* complain_on_overflow */ | |
189 | bfd_elf_generic_reloc, /* special_function */ | |
190 | "R_FRV_GPREL32", /* name */ | |
191 | false, /* partial_inplace */ | |
192 | 0xffffffff, /* src_mask */ | |
193 | 0xffffffff, /* dst_mask */ | |
194 | false), /* pcrel_offset */ | |
195 | ||
196 | HOWTO (R_FRV_GPRELHI, /* type */ | |
197 | 0, /* rightshift */ | |
198 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
199 | 16, /* bitsize */ | |
200 | false, /* pc_relative */ | |
201 | 0, /* bitpos */ | |
202 | complain_overflow_dont, /* complain_on_overflow */ | |
203 | bfd_elf_generic_reloc, /* special_function */ | |
204 | "R_FRV_GPRELHI", /* name */ | |
205 | false, /* partial_inplace */ | |
206 | 0xffff, /* src_mask */ | |
207 | 0xffff, /* dst_mask */ | |
208 | false), /* pcrel_offset */ | |
209 | ||
210 | HOWTO (R_FRV_GPRELLO, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 16, /* bitsize */ | |
214 | false, /* pc_relative */ | |
215 | 0, /* bitpos */ | |
216 | complain_overflow_dont, /* complain_on_overflow */ | |
217 | bfd_elf_generic_reloc, /* special_function */ | |
218 | "R_FRV_GPRELLO", /* name */ | |
219 | false, /* partial_inplace */ | |
220 | 0xffff, /* src_mask */ | |
221 | 0xffff, /* dst_mask */ | |
222 | false), /* pcrel_offset */ | |
223 | }; | |
224 | ||
225 | /* GNU extension to record C++ vtable hierarchy. */ | |
226 | static reloc_howto_type elf32_frv_vtinherit_howto = | |
227 | HOWTO (R_FRV_GNU_VTINHERIT, /* type */ | |
228 | 0, /* rightshift */ | |
229 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
230 | 0, /* bitsize */ | |
231 | false, /* pc_relative */ | |
232 | 0, /* bitpos */ | |
233 | complain_overflow_dont, /* complain_on_overflow */ | |
234 | NULL, /* special_function */ | |
235 | "R_FRV_GNU_VTINHERIT", /* name */ | |
236 | false, /* partial_inplace */ | |
237 | 0, /* src_mask */ | |
238 | 0, /* dst_mask */ | |
239 | false); /* pcrel_offset */ | |
240 | ||
241 | /* GNU extension to record C++ vtable member usage. */ | |
242 | static reloc_howto_type elf32_frv_vtentry_howto = | |
243 | HOWTO (R_FRV_GNU_VTENTRY, /* type */ | |
244 | 0, /* rightshift */ | |
245 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 0, /* bitsize */ | |
247 | false, /* pc_relative */ | |
248 | 0, /* bitpos */ | |
249 | complain_overflow_dont, /* complain_on_overflow */ | |
250 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
251 | "R_FRV_GNU_VTENTRY", /* name */ | |
252 | false, /* partial_inplace */ | |
253 | 0, /* src_mask */ | |
254 | 0, /* dst_mask */ | |
255 | false); /* pcrel_offset */ | |
256 | \f | |
257 | /* Map BFD reloc types to FRV ELF reloc types. */ | |
258 | #if 0 | |
259 | struct frv_reloc_map | |
260 | { | |
261 | unsigned int bfd_reloc_val; | |
262 | unsigned int frv_reloc_val; | |
263 | }; | |
264 | ||
265 | static const struct frv_reloc_map frv_reloc_map [] = | |
266 | { | |
267 | { BFD_RELOC_NONE, R_FRV_NONE }, | |
268 | { BFD_RELOC_32, R_FRV_32 }, | |
269 | { BFD_RELOC_FRV_LABEL16, R_FRV_LABEL16 }, | |
270 | { BFD_RELOC_FRV_LABEL24, R_FRV_LABEL24 }, | |
271 | { BFD_RELOC_FRV_LO16, R_FRV_LO16 }, | |
272 | { BFD_RELOC_FRV_HI16, R_FRV_HI16 }, | |
273 | { BFD_RELOC_FRV_GPREL12, R_FRV_GPREL12 }, | |
274 | { BFD_RELOC_FRV_GPRELU12, R_FRV_GPRELU12 }, | |
275 | { BFD_RELOC_FRV_GPREL32, R_FRV_GPREL32 }, | |
276 | { BFD_RELOC_FRV_GPRELHI, R_FRV_GPRELHI }, | |
277 | { BFD_RELOC_FRV_GPRELLO, R_FRV_GPRELLO }, | |
278 | { BFD_RELOC_VTABLE_INHERIT, R_FRV_GNU_VTINHERIT }, | |
279 | { BFD_RELOC_VTABLE_ENTRY, R_FRV_GNU_VTENTRY }, | |
280 | }; | |
281 | #endif | |
282 | ||
283 | /* Handle an FRV small data reloc. */ | |
284 | ||
285 | static bfd_reloc_status_type | |
286 | elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation, contents, value) | |
287 | struct bfd_link_info *info; | |
288 | bfd *input_bfd; | |
289 | asection *input_section; | |
290 | Elf_Internal_Rela *relocation; | |
291 | bfd_byte *contents; | |
292 | bfd_vma value; | |
293 | { | |
294 | bfd_vma insn; | |
295 | bfd_vma gp; | |
296 | struct bfd_link_hash_entry *h; | |
297 | ||
298 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
299 | ||
300 | gp = (h->u.def.value | |
301 | + h->u.def.section->output_section->vma | |
302 | + h->u.def.section->output_offset); | |
303 | ||
304 | value -= input_section->output_section->vma; | |
305 | value -= (gp - input_section->output_section->vma); | |
306 | ||
307 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); | |
308 | ||
309 | value += relocation->r_addend; | |
310 | ||
311 | if ((long) value > 0x7ff || (long) value < -0x800) | |
312 | return bfd_reloc_overflow; | |
313 | ||
314 | bfd_put_32 (input_bfd, | |
315 | (insn & 0xfffff000) | (value & 0xfff), | |
316 | contents + relocation->r_offset); | |
317 | ||
318 | return bfd_reloc_ok; | |
319 | } | |
320 | ||
321 | /* Handle an FRV small data reloc. for the u12 field. */ | |
322 | ||
323 | static bfd_reloc_status_type | |
324 | elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation, contents, value) | |
325 | struct bfd_link_info *info; | |
326 | bfd *input_bfd; | |
327 | asection *input_section; | |
328 | Elf_Internal_Rela *relocation; | |
329 | bfd_byte *contents; | |
330 | bfd_vma value; | |
331 | { | |
332 | bfd_vma insn; | |
333 | bfd_vma gp; | |
334 | struct bfd_link_hash_entry *h; | |
335 | bfd_vma mask; | |
336 | ||
337 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
338 | ||
339 | gp = (h->u.def.value | |
340 | + h->u.def.section->output_section->vma | |
341 | + h->u.def.section->output_offset); | |
342 | ||
343 | value -= input_section->output_section->vma; | |
344 | value -= (gp - input_section->output_section->vma); | |
345 | ||
346 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); | |
347 | ||
348 | value += relocation->r_addend; | |
349 | ||
350 | if ((long) value > 0x7ff || (long) value < -0x800) | |
351 | return bfd_reloc_overflow; | |
352 | ||
353 | /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ | |
354 | mask = 0x3f03f; | |
355 | insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); | |
356 | ||
357 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); | |
358 | ||
359 | return bfd_reloc_ok; | |
360 | } | |
361 | ||
362 | /* Handle an FRV ELF HI16 reloc. */ | |
363 | ||
364 | static bfd_reloc_status_type | |
365 | elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value) | |
366 | bfd *input_bfd; | |
367 | Elf_Internal_Rela *relhi; | |
368 | bfd_byte *contents; | |
369 | bfd_vma value; | |
370 | { | |
371 | bfd_vma insn; | |
372 | ||
373 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
374 | ||
375 | value += relhi->r_addend; | |
376 | value = ((value >> 16) & 0xffff); | |
377 | ||
378 | insn = (insn & 0xffff0000) | value; | |
379 | ||
380 | if ((long) value > 0xffff || (long) value < -0x10000) | |
381 | return bfd_reloc_overflow; | |
382 | ||
383 | bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); | |
384 | return bfd_reloc_ok; | |
385 | ||
386 | } | |
387 | static bfd_reloc_status_type | |
388 | elf32_frv_relocate_lo16 (input_bfd, rello, contents, value) | |
389 | bfd *input_bfd; | |
390 | Elf_Internal_Rela *rello; | |
391 | bfd_byte *contents; | |
392 | bfd_vma value; | |
393 | { | |
394 | bfd_vma insn; | |
395 | ||
396 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
397 | ||
398 | value += rello->r_addend; | |
399 | value = value & 0xffff; | |
400 | ||
401 | insn = (insn & 0xffff0000) | value; | |
402 | ||
403 | if ((long) value > 0xffff || (long) value < -0x10000) | |
404 | return bfd_reloc_overflow; | |
405 | ||
406 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); | |
407 | return bfd_reloc_ok; | |
408 | } | |
409 | ||
410 | /* Perform the relocation for the CALL label24 instruction. */ | |
411 | ||
412 | static bfd_reloc_status_type | |
413 | elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value) | |
414 | bfd *input_bfd; | |
415 | asection *input_section; | |
416 | Elf_Internal_Rela *rello; | |
417 | bfd_byte *contents; | |
418 | bfd_vma value; | |
419 | { | |
420 | bfd_vma insn; | |
421 | bfd_vma label6; | |
422 | bfd_vma label18; | |
423 | ||
424 | /* The format for the call instruction is: | |
425 | ||
426 | 0 000000 0001111 000000000000000000 | |
427 | label6 opcode label18 | |
428 | ||
429 | The branch calculation is: pc + (4*label24) | |
430 | where label24 is the concatenation of label6 and label18. */ | |
431 | ||
432 | /* Grab the instruction. */ | |
433 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
434 | ||
435 | value -= input_section->output_section->vma + input_section->output_offset; | |
436 | value -= rello->r_offset; | |
437 | value += rello->r_addend; | |
438 | ||
439 | value = value >> 2; | |
440 | ||
441 | label6 = value & 0xfc0000; | |
442 | label6 = label6 << 7; | |
443 | ||
444 | label18 = value & 0x3ffff; | |
445 | ||
446 | insn = insn & 0x803c0000; | |
447 | insn = insn | label6; | |
448 | insn = insn | label18; | |
449 | ||
450 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); | |
451 | ||
452 | return bfd_reloc_ok; | |
453 | } | |
454 | ||
455 | static bfd_reloc_status_type | |
456 | elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation, contents, value) | |
457 | struct bfd_link_info *info; | |
458 | bfd *input_bfd; | |
459 | asection *input_section; | |
460 | Elf_Internal_Rela *relocation; | |
461 | bfd_byte *contents; | |
462 | bfd_vma value; | |
463 | { | |
464 | bfd_vma insn; | |
465 | bfd_vma gp; | |
466 | struct bfd_link_hash_entry *h; | |
467 | ||
468 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
469 | ||
470 | gp = (h->u.def.value | |
471 | + h->u.def.section->output_section->vma | |
472 | + h->u.def.section->output_offset); | |
473 | ||
474 | value -= input_section->output_section->vma; | |
475 | value -= (gp - input_section->output_section->vma); | |
476 | value += relocation->r_addend; | |
477 | value = ((value >> 16) & 0xffff); | |
478 | ||
479 | if ((long) value > 0xffff || (long) value < -0x10000) | |
480 | return bfd_reloc_overflow; | |
481 | ||
482 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); | |
483 | insn = (insn & 0xffff0000) | value; | |
484 | ||
485 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); | |
486 | return bfd_reloc_ok; | |
487 | } | |
488 | ||
489 | static bfd_reloc_status_type | |
490 | elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation, contents, value) | |
491 | struct bfd_link_info *info; | |
492 | bfd *input_bfd; | |
493 | asection *input_section; | |
494 | Elf_Internal_Rela *relocation; | |
495 | bfd_byte *contents; | |
496 | bfd_vma value; | |
497 | { | |
498 | bfd_vma insn; | |
499 | bfd_vma gp; | |
500 | struct bfd_link_hash_entry *h; | |
501 | ||
502 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
503 | ||
504 | gp = (h->u.def.value | |
505 | + h->u.def.section->output_section->vma | |
506 | + h->u.def.section->output_offset); | |
507 | ||
508 | value -= input_section->output_section->vma; | |
509 | value -= (gp - input_section->output_section->vma); | |
510 | value += relocation->r_addend; | |
511 | value = value & 0xffff; | |
512 | ||
513 | if ((long) value > 0xffff || (long) value < -0x10000) | |
514 | return bfd_reloc_overflow; | |
515 | ||
516 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); | |
517 | insn = (insn & 0xffff0000) | value; | |
518 | ||
519 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); | |
520 | ||
521 | return bfd_reloc_ok; | |
522 | } | |
523 | ||
524 | static reloc_howto_type * | |
525 | frv_reloc_type_lookup (abfd, code) | |
526 | bfd * abfd ATTRIBUTE_UNUSED; | |
527 | bfd_reloc_code_real_type code; | |
528 | { | |
529 | switch (code) | |
530 | { | |
531 | default: | |
532 | break; | |
533 | ||
534 | case BFD_RELOC_NONE: | |
535 | return &elf32_frv_howto_table[ (int) R_FRV_NONE]; | |
536 | ||
537 | case BFD_RELOC_32: | |
538 | case BFD_RELOC_CTOR: | |
539 | return &elf32_frv_howto_table[ (int) R_FRV_32]; | |
540 | ||
541 | case BFD_RELOC_FRV_LABEL16: | |
542 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; | |
543 | ||
544 | case BFD_RELOC_FRV_LABEL24: | |
545 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; | |
546 | ||
547 | case BFD_RELOC_FRV_LO16: | |
548 | return &elf32_frv_howto_table[ (int) R_FRV_LO16]; | |
549 | ||
550 | case BFD_RELOC_FRV_HI16: | |
551 | return &elf32_frv_howto_table[ (int) R_FRV_HI16]; | |
552 | ||
553 | case BFD_RELOC_FRV_GPREL12: | |
554 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; | |
555 | ||
556 | case BFD_RELOC_FRV_GPRELU12: | |
557 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; | |
558 | ||
559 | case BFD_RELOC_FRV_GPREL32: | |
560 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; | |
561 | ||
562 | case BFD_RELOC_FRV_GPRELHI: | |
563 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; | |
564 | ||
565 | case BFD_RELOC_FRV_GPRELLO: | |
566 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; | |
567 | ||
568 | case BFD_RELOC_VTABLE_INHERIT: | |
569 | return &elf32_frv_vtinherit_howto; | |
570 | ||
571 | case BFD_RELOC_VTABLE_ENTRY: | |
572 | return &elf32_frv_vtentry_howto; | |
573 | } | |
574 | ||
575 | return NULL; | |
576 | } | |
577 | ||
578 | /* Set the howto pointer for an FRV ELF reloc. */ | |
579 | ||
580 | static void | |
581 | frv_info_to_howto_rela (abfd, cache_ptr, dst) | |
582 | bfd * abfd ATTRIBUTE_UNUSED; | |
583 | arelent * cache_ptr; | |
584 | Elf32_Internal_Rela * dst; | |
585 | { | |
586 | unsigned int r_type; | |
587 | ||
588 | r_type = ELF32_R_TYPE (dst->r_info); | |
589 | switch (r_type) | |
590 | { | |
591 | case R_FRV_GNU_VTINHERIT: | |
592 | cache_ptr->howto = &elf32_frv_vtinherit_howto; | |
593 | break; | |
594 | ||
595 | case R_FRV_GNU_VTENTRY: | |
596 | cache_ptr->howto = &elf32_frv_vtentry_howto; | |
597 | break; | |
598 | ||
599 | default: | |
600 | cache_ptr->howto = & elf32_frv_howto_table [r_type]; | |
601 | break; | |
602 | } | |
603 | } | |
604 | \f | |
605 | /* Perform a single relocation. By default we use the standard BFD | |
606 | routines, but a few relocs, we have to do them ourselves. */ | |
607 | ||
608 | static bfd_reloc_status_type | |
609 | frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation) | |
610 | reloc_howto_type * howto; | |
611 | bfd * input_bfd; | |
612 | asection * input_section; | |
613 | bfd_byte * contents; | |
614 | Elf_Internal_Rela * rel; | |
615 | bfd_vma relocation; | |
616 | { | |
617 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
618 | contents, rel->r_offset, relocation, | |
619 | rel->r_addend); | |
620 | } | |
621 | ||
622 | \f | |
623 | /* Relocate an FRV ELF section. | |
624 | There is some attempt to make this function usable for many architectures, | |
625 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
626 | if only to serve as a learning tool. | |
627 | ||
628 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
629 | to handle the relocations for a section. | |
630 | ||
631 | The relocs are always passed as Rela structures; if the section | |
632 | actually uses Rel structures, the r_addend field will always be | |
633 | zero. | |
634 | ||
635 | This function is responsible for adjusting the section contents as | |
636 | necessary, and (if using Rela relocs and generating a relocateable | |
637 | output file) adjusting the reloc addend as necessary. | |
638 | ||
639 | This function does not have to worry about setting the reloc | |
640 | address or the reloc symbol index. | |
641 | ||
642 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
643 | ||
644 | LOCAL_SECTIONS is an array giving the section in the input file | |
645 | corresponding to the st_shndx field of each local symbol. | |
646 | ||
647 | The global hash table entry for the global symbols can be found | |
648 | via elf_sym_hashes (input_bfd). | |
649 | ||
650 | When generating relocateable output, this function must handle | |
651 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
652 | going to be the section symbol corresponding to the output | |
653 | section, which means that the addend must be adjusted | |
654 | accordingly. */ | |
655 | ||
656 | static boolean | |
657 | elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section, | |
658 | contents, relocs, local_syms, local_sections) | |
659 | bfd * output_bfd ATTRIBUTE_UNUSED; | |
660 | struct bfd_link_info * info; | |
661 | bfd * input_bfd; | |
662 | asection * input_section; | |
663 | bfd_byte * contents; | |
664 | Elf_Internal_Rela * relocs; | |
665 | Elf_Internal_Sym * local_syms; | |
666 | asection ** local_sections; | |
667 | { | |
668 | Elf_Internal_Shdr * symtab_hdr; | |
669 | struct elf_link_hash_entry ** sym_hashes; | |
670 | Elf_Internal_Rela * rel; | |
671 | Elf_Internal_Rela * relend; | |
672 | ||
673 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
674 | sym_hashes = elf_sym_hashes (input_bfd); | |
675 | relend = relocs + input_section->reloc_count; | |
676 | ||
677 | for (rel = relocs; rel < relend; rel ++) | |
678 | { | |
679 | reloc_howto_type * howto; | |
680 | unsigned long r_symndx; | |
681 | Elf_Internal_Sym * sym; | |
682 | asection * sec; | |
683 | struct elf_link_hash_entry * h; | |
684 | bfd_vma relocation; | |
685 | bfd_reloc_status_type r; | |
686 | const char * name = NULL; | |
687 | int r_type; | |
688 | ||
689 | r_type = ELF32_R_TYPE (rel->r_info); | |
690 | ||
691 | if ( r_type == R_FRV_GNU_VTINHERIT | |
692 | || r_type == R_FRV_GNU_VTENTRY) | |
693 | continue; | |
694 | ||
695 | r_symndx = ELF32_R_SYM (rel->r_info); | |
696 | ||
697 | if (info->relocateable) | |
698 | { | |
699 | /* This is a relocateable link. We don't have to change | |
700 | anything, unless the reloc is against a section symbol, | |
701 | in which case we have to adjust according to where the | |
702 | section symbol winds up in the output section. */ | |
703 | if (r_symndx < symtab_hdr->sh_info) | |
704 | { | |
705 | sym = local_syms + r_symndx; | |
706 | ||
707 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
708 | { | |
709 | sec = local_sections [r_symndx]; | |
710 | rel->r_addend += sec->output_offset + sym->st_value; | |
711 | } | |
712 | } | |
713 | ||
714 | continue; | |
715 | } | |
716 | ||
717 | /* This is a final link. */ | |
718 | howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); | |
719 | h = NULL; | |
720 | sym = NULL; | |
721 | sec = NULL; | |
722 | ||
723 | if (r_symndx < symtab_hdr->sh_info) | |
724 | { | |
725 | sym = local_syms + r_symndx; | |
726 | sec = local_sections [r_symndx]; | |
727 | relocation = (sec->output_section->vma | |
728 | + sec->output_offset | |
729 | + sym->st_value); | |
730 | ||
731 | name = bfd_elf_string_from_elf_section | |
732 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
733 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
734 | } | |
735 | else | |
736 | { | |
737 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
738 | ||
739 | while (h->root.type == bfd_link_hash_indirect | |
740 | || h->root.type == bfd_link_hash_warning) | |
741 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
742 | ||
743 | name = h->root.root.string; | |
744 | ||
745 | if (h->root.type == bfd_link_hash_defined | |
746 | || h->root.type == bfd_link_hash_defweak) | |
747 | { | |
748 | sec = h->root.u.def.section; | |
749 | relocation = (h->root.u.def.value | |
750 | + sec->output_section->vma | |
751 | + sec->output_offset); | |
752 | } | |
753 | else if (h->root.type == bfd_link_hash_undefweak) | |
754 | { | |
755 | relocation = 0; | |
756 | } | |
757 | else | |
758 | { | |
759 | if (! ((*info->callbacks->undefined_symbol) | |
760 | (info, h->root.root.string, input_bfd, | |
761 | input_section, rel->r_offset, true))) | |
762 | return false; | |
763 | relocation = 0; | |
764 | } | |
765 | } | |
766 | ||
767 | if (r_type == R_FRV_HI16) | |
768 | r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); | |
769 | ||
770 | else if (r_type == R_FRV_LO16) | |
771 | r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); | |
772 | ||
773 | else if (r_type == R_FRV_LABEL24) | |
774 | r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, contents, relocation); | |
775 | ||
776 | else if (r_type == R_FRV_GPREL12) | |
777 | r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, contents, relocation); | |
778 | ||
779 | else if (r_type == R_FRV_GPRELU12) | |
780 | r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, contents, relocation); | |
781 | ||
782 | else if (r_type == R_FRV_GPRELLO) | |
783 | r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, contents, relocation); | |
784 | ||
785 | else if (r_type == R_FRV_GPRELHI) | |
786 | r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, contents, relocation); | |
787 | ||
788 | else | |
789 | r = frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation); | |
790 | ||
791 | if (r != bfd_reloc_ok) | |
792 | { | |
793 | const char * msg = (const char *) NULL; | |
794 | ||
795 | switch (r) | |
796 | { | |
797 | case bfd_reloc_overflow: | |
798 | r = info->callbacks->reloc_overflow | |
799 | (info, name, howto->name, (bfd_vma) 0, | |
800 | input_bfd, input_section, rel->r_offset); | |
801 | break; | |
802 | ||
803 | case bfd_reloc_undefined: | |
804 | r = info->callbacks->undefined_symbol | |
805 | (info, name, input_bfd, input_section, rel->r_offset, true); | |
806 | break; | |
807 | ||
808 | case bfd_reloc_outofrange: | |
809 | msg = _("internal error: out of range error"); | |
810 | break; | |
811 | ||
812 | case bfd_reloc_notsupported: | |
813 | msg = _("internal error: unsupported relocation error"); | |
814 | break; | |
815 | ||
816 | case bfd_reloc_dangerous: | |
817 | msg = _("internal error: dangerous relocation"); | |
818 | break; | |
819 | ||
820 | default: | |
821 | msg = _("internal error: unknown error"); | |
822 | break; | |
823 | } | |
824 | ||
825 | if (msg) | |
826 | r = info->callbacks->warning | |
827 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
828 | ||
829 | if (! r) | |
830 | return false; | |
831 | } | |
832 | } | |
833 | ||
834 | return true; | |
835 | } | |
836 | \f | |
837 | /* Return the section that should be marked against GC for a given | |
838 | relocation. */ | |
839 | ||
840 | static asection * | |
841 | elf32_frv_gc_mark_hook (abfd, info, rel, h, sym) | |
842 | bfd * abfd; | |
843 | struct bfd_link_info * info ATTRIBUTE_UNUSED; | |
844 | Elf_Internal_Rela * rel; | |
845 | struct elf_link_hash_entry * h; | |
846 | Elf_Internal_Sym * sym; | |
847 | { | |
848 | if (h != NULL) | |
849 | { | |
850 | switch (ELF32_R_TYPE (rel->r_info)) | |
851 | { | |
852 | case R_FRV_GNU_VTINHERIT: | |
853 | case R_FRV_GNU_VTENTRY: | |
854 | break; | |
855 | ||
856 | default: | |
857 | switch (h->root.type) | |
858 | { | |
859 | default: | |
860 | break; | |
861 | ||
862 | case bfd_link_hash_defined: | |
863 | case bfd_link_hash_defweak: | |
864 | return h->root.u.def.section; | |
865 | ||
866 | case bfd_link_hash_common: | |
867 | return h->root.u.c.p->section; | |
868 | } | |
869 | } | |
870 | } | |
871 | else | |
872 | { | |
873 | if (!(elf_bad_symtab (abfd) | |
874 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
875 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
876 | && sym->st_shndx != SHN_COMMON)) | |
877 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
878 | } | |
879 | ||
880 | return NULL; | |
881 | } | |
882 | ||
883 | /* Update the got entry reference counts for the section being removed. */ | |
884 | ||
885 | static boolean | |
886 | elf32_frv_gc_sweep_hook (abfd, info, sec, relocs) | |
887 | bfd * abfd ATTRIBUTE_UNUSED; | |
888 | struct bfd_link_info * info ATTRIBUTE_UNUSED; | |
889 | asection * sec ATTRIBUTE_UNUSED; | |
890 | const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED; | |
891 | { | |
892 | return true; | |
893 | } | |
894 | ||
895 | \f | |
896 | /* Hook called by the linker routine which adds symbols from an object | |
897 | file. We use it to put .comm items in .scomm, and not .comm. */ | |
898 | ||
899 | static boolean | |
900 | elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
901 | bfd *abfd; | |
902 | struct bfd_link_info *info; | |
903 | const Elf_Internal_Sym *sym; | |
904 | const char **namep ATTRIBUTE_UNUSED; | |
905 | flagword *flagsp ATTRIBUTE_UNUSED; | |
906 | asection **secp; | |
907 | bfd_vma *valp; | |
908 | { | |
909 | if (sym->st_shndx == SHN_COMMON | |
910 | && !info->relocateable | |
911 | && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) | |
912 | { | |
913 | /* Common symbols less than or equal to -G nn bytes are | |
914 | automatically put into .sbss. */ | |
915 | ||
916 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
917 | ||
918 | if (scomm == NULL) | |
919 | { | |
920 | scomm = bfd_make_section (abfd, ".scommon"); | |
921 | if (scomm == NULL | |
922 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC | |
923 | | SEC_IS_COMMON | |
924 | | SEC_LINKER_CREATED))) | |
925 | return false; | |
926 | } | |
927 | ||
928 | *secp = scomm; | |
929 | *valp = sym->st_size; | |
930 | } | |
931 | ||
932 | return true; | |
933 | } | |
934 | /* Look through the relocs for a section during the first phase. | |
935 | Since we don't do .gots or .plts, we just need to consider the | |
936 | virtual table relocs for gc. */ | |
937 | ||
938 | static boolean | |
939 | elf32_frv_check_relocs (abfd, info, sec, relocs) | |
940 | bfd *abfd; | |
941 | struct bfd_link_info *info; | |
942 | asection *sec; | |
943 | const Elf_Internal_Rela *relocs; | |
944 | { | |
945 | Elf_Internal_Shdr *symtab_hdr; | |
946 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
947 | const Elf_Internal_Rela *rel; | |
948 | const Elf_Internal_Rela *rel_end; | |
949 | ||
950 | if (info->relocateable) | |
951 | return true; | |
952 | ||
953 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
954 | sym_hashes = elf_sym_hashes (abfd); | |
955 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
956 | if (!elf_bad_symtab (abfd)) | |
957 | sym_hashes_end -= symtab_hdr->sh_info; | |
958 | ||
959 | rel_end = relocs + sec->reloc_count; | |
960 | for (rel = relocs; rel < rel_end; rel++) | |
961 | { | |
962 | struct elf_link_hash_entry *h; | |
963 | unsigned long r_symndx; | |
964 | ||
965 | r_symndx = ELF32_R_SYM (rel->r_info); | |
966 | if (r_symndx < symtab_hdr->sh_info) | |
967 | h = NULL; | |
968 | else | |
969 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
970 | ||
971 | switch (ELF32_R_TYPE (rel->r_info)) | |
972 | { | |
973 | /* This relocation describes the C++ object vtable hierarchy. | |
974 | Reconstruct it for later use during GC. */ | |
975 | case R_FRV_GNU_VTINHERIT: | |
976 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
977 | return false; | |
978 | break; | |
979 | ||
980 | /* This relocation describes which C++ vtable entries are actually | |
981 | used. Record for later use during GC. */ | |
982 | case R_FRV_GNU_VTENTRY: | |
983 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
984 | return false; | |
985 | break; | |
986 | } | |
987 | } | |
988 | ||
989 | return true; | |
990 | } | |
991 | ||
992 | \f | |
993 | /* Return the machine subcode from the ELF e_flags header. */ | |
994 | ||
995 | static int | |
996 | elf32_frv_machine (abfd) | |
997 | bfd *abfd; | |
998 | { | |
999 | switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) | |
1000 | { | |
1001 | default: break; | |
1002 | case EF_FRV_CPU_FR500: return bfd_mach_fr500; | |
1003 | case EF_FRV_CPU_FR400: return bfd_mach_fr400; | |
1004 | case EF_FRV_CPU_FR300: return bfd_mach_fr300; | |
1005 | case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; | |
1006 | case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; | |
1007 | } | |
1008 | ||
1009 | return bfd_mach_frv; | |
1010 | } | |
1011 | ||
1012 | /* Set the right machine number for a FRV ELF file. */ | |
1013 | ||
1014 | static boolean | |
1015 | elf32_frv_object_p (abfd) | |
1016 | bfd *abfd; | |
1017 | { | |
1018 | bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); | |
1019 | return true; | |
1020 | } | |
1021 | \f | |
1022 | /* Function to set the ELF flag bits. */ | |
1023 | ||
1024 | static boolean | |
1025 | frv_elf_set_private_flags (abfd, flags) | |
1026 | bfd *abfd; | |
1027 | flagword flags; | |
1028 | { | |
1029 | elf_elfheader (abfd)->e_flags = flags; | |
1030 | elf_flags_init (abfd) = true; | |
1031 | return true; | |
1032 | } | |
1033 | ||
1034 | /* Copy backend specific data from one object module to another. */ | |
1035 | ||
1036 | static boolean | |
1037 | frv_elf_copy_private_bfd_data (ibfd, obfd) | |
1038 | bfd *ibfd; | |
1039 | bfd *obfd; | |
1040 | { | |
1041 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1042 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1043 | return true; | |
1044 | ||
1045 | BFD_ASSERT (!elf_flags_init (obfd) | |
1046 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
1047 | ||
1048 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
1049 | elf_flags_init (obfd) = true; | |
1050 | return true; | |
1051 | } | |
1052 | ||
1053 | /* Merge backend specific data from an object file to the output | |
1054 | object file when linking. */ | |
1055 | ||
1056 | static boolean | |
1057 | frv_elf_merge_private_bfd_data (ibfd, obfd) | |
1058 | bfd *ibfd; | |
1059 | bfd *obfd; | |
1060 | { | |
1061 | flagword old_flags, old_partial; | |
1062 | flagword new_flags, new_partial; | |
1063 | boolean error = false; | |
1064 | char new_opt[80]; | |
1065 | char old_opt[80]; | |
1066 | ||
1067 | new_opt[0] = old_opt[0] = '\0'; | |
1068 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1069 | old_flags = elf_elfheader (obfd)->e_flags; | |
1070 | ||
1071 | #ifdef DEBUG | |
1072 | (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", | |
1073 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", | |
1074 | bfd_get_filename (ibfd)); | |
1075 | #endif | |
1076 | ||
1077 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
1078 | { | |
1079 | elf_flags_init (obfd) = true; | |
1080 | old_flags = new_flags; | |
1081 | } | |
1082 | ||
1083 | else if (new_flags == old_flags) /* Compatible flags are ok. */ | |
1084 | ; | |
1085 | ||
1086 | else /* Possibly incompatible flags. */ | |
1087 | { | |
1088 | /* Warn if different # of gprs are used. Note, 0 means nothing is | |
1089 | said about the size of gprs. */ | |
1090 | new_partial = (new_flags & EF_FRV_GPR_MASK); | |
1091 | old_partial = (old_flags & EF_FRV_GPR_MASK); | |
1092 | if (new_partial == old_partial) | |
1093 | ; | |
1094 | ||
1095 | else if (new_partial == 0) | |
1096 | ; | |
1097 | ||
1098 | else if (old_partial == 0) | |
1099 | old_flags |= new_partial; | |
1100 | ||
1101 | else | |
1102 | { | |
1103 | switch (new_partial) | |
1104 | { | |
1105 | default: strcat (new_opt, " -mgpr-??"); break; | |
1106 | case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; | |
1107 | case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; | |
1108 | } | |
1109 | ||
1110 | switch (old_partial) | |
1111 | { | |
1112 | default: strcat (old_opt, " -mgpr-??"); break; | |
1113 | case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; | |
1114 | case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | /* Warn if different # of fprs are used. Note, 0 means nothing is | |
1119 | said about the size of fprs. */ | |
1120 | new_partial = (new_flags & EF_FRV_FPR_MASK); | |
1121 | old_partial = (old_flags & EF_FRV_FPR_MASK); | |
1122 | if (new_partial == old_partial) | |
1123 | ; | |
1124 | ||
1125 | else if (new_partial == 0) | |
1126 | ; | |
1127 | ||
1128 | else if (old_partial == 0) | |
1129 | old_flags |= new_partial; | |
1130 | ||
1131 | else | |
1132 | { | |
1133 | switch (new_partial) | |
1134 | { | |
1135 | default: strcat (new_opt, " -mfpr-?"); break; | |
1136 | case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; | |
1137 | case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; | |
1138 | case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; | |
1139 | } | |
1140 | ||
1141 | switch (old_partial) | |
1142 | { | |
1143 | default: strcat (old_opt, " -mfpr-?"); break; | |
1144 | case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; | |
1145 | case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; | |
1146 | case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | /* Warn if different dword support was used. Note, 0 means nothing is | |
1151 | said about the dword support. */ | |
1152 | new_partial = (new_flags & EF_FRV_DWORD_MASK); | |
1153 | old_partial = (old_flags & EF_FRV_DWORD_MASK); | |
1154 | if (new_partial == old_partial) | |
1155 | ; | |
1156 | ||
1157 | else if (new_partial == 0) | |
1158 | ; | |
1159 | ||
1160 | else if (old_partial == 0) | |
1161 | old_flags |= new_partial; | |
1162 | ||
1163 | else | |
1164 | { | |
1165 | switch (new_partial) | |
1166 | { | |
1167 | default: strcat (new_opt, " -mdword-?"); break; | |
1168 | case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; | |
1169 | case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; | |
1170 | } | |
1171 | ||
1172 | switch (old_partial) | |
1173 | { | |
1174 | default: strcat (old_opt, " -mdword-?"); break; | |
1175 | case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; | |
1176 | case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | /* Or in flags that accumulate (ie, if one module uses it, mark that the | |
1181 | feature is used. */ | |
1182 | old_flags |= new_flags & (EF_FRV_DOUBLE | |
1183 | | EF_FRV_MEDIA | |
1184 | | EF_FRV_MULADD | |
1185 | | EF_FRV_NON_PIC_RELOCS); | |
1186 | ||
1187 | /* If any module was compiled without -G0, clear the G0 bit. */ | |
1188 | old_flags = ((old_flags & ~ EF_FRV_G0) | |
1189 | | (old_flags & new_flags & EF_FRV_G0)); | |
1190 | ||
1191 | /* If any module was compiled without -mnopack, clear the mnopack bit. */ | |
1192 | old_flags = ((old_flags & ~ EF_FRV_NOPACK) | |
1193 | | (old_flags & new_flags & EF_FRV_NOPACK)); | |
1194 | ||
1195 | /* We don't have to do anything if the pic flags are the same, or the new | |
1196 | module(s) were compiled with -mlibrary-pic. */ | |
1197 | new_partial = (new_flags & EF_FRV_PIC_FLAGS); | |
1198 | old_partial = (old_flags & EF_FRV_PIC_FLAGS); | |
1199 | if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) | |
1200 | ; | |
1201 | ||
1202 | /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic | |
1203 | flags if any from the new module. */ | |
1204 | else if ((old_partial & EF_FRV_LIBPIC) != 0) | |
1205 | old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; | |
1206 | ||
1207 | /* If we have mixtures of -fpic and -fPIC, or in both bits. */ | |
1208 | else if (new_partial != 0 && old_partial != 0) | |
1209 | old_flags |= new_partial; | |
1210 | ||
1211 | /* One module was compiled for pic and the other was not, see if we have | |
1212 | had any relocations that are not pic-safe. */ | |
1213 | else | |
1214 | { | |
1215 | if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) | |
1216 | old_flags |= new_partial; | |
1217 | else | |
1218 | { | |
1219 | old_flags &= ~ EF_FRV_PIC_FLAGS; | |
1220 | #ifndef FRV_NO_PIC_ERROR | |
1221 | error = true; | |
1222 | (*_bfd_error_handler) | |
1223 | (_("%s: compiled with %s and linked with modules that use non-pic relocations"), | |
1224 | bfd_get_filename (ibfd), | |
1225 | (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); | |
1226 | #endif | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | /* Warn if different cpu is used (allow a specific cpu to override | |
1231 | the generic cpu). */ | |
1232 | new_partial = (new_flags & EF_FRV_CPU_MASK); | |
1233 | old_partial = (old_flags & EF_FRV_CPU_MASK); | |
1234 | if (new_partial == old_partial) | |
1235 | ; | |
1236 | ||
1237 | else if (new_partial == EF_FRV_CPU_GENERIC) | |
1238 | ; | |
1239 | ||
1240 | else if (old_partial == EF_FRV_CPU_GENERIC) | |
1241 | old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; | |
1242 | ||
1243 | else | |
1244 | { | |
1245 | switch (new_partial) | |
1246 | { | |
1247 | default: strcat (new_opt, " -mcpu=?"); break; | |
1248 | case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; | |
1249 | case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; | |
1250 | case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; | |
1251 | case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; | |
1252 | case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; | |
1253 | case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; | |
1254 | } | |
1255 | ||
1256 | switch (old_partial) | |
1257 | { | |
1258 | default: strcat (old_opt, " -mcpu=?"); break; | |
1259 | case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; | |
1260 | case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; | |
1261 | case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; | |
1262 | case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; | |
1263 | case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; | |
1264 | case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | /* Print out any mismatches from above. */ | |
1269 | if (new_opt[0]) | |
1270 | { | |
1271 | error = true; | |
1272 | (*_bfd_error_handler) | |
1273 | (_("%s: compiled with %s and linked with modules compiled with %s"), | |
1274 | bfd_get_filename (ibfd), new_opt, old_opt); | |
1275 | } | |
1276 | ||
1277 | /* Warn about any other mismatches */ | |
1278 | new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); | |
1279 | old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); | |
1280 | if (new_partial != old_partial) | |
1281 | { | |
1282 | old_flags |= new_partial; | |
1283 | error = true; | |
1284 | (*_bfd_error_handler) | |
1285 | (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
1286 | bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ | |
1291 | if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) | |
1292 | old_flags |= EF_FRV_NOPACK; | |
1293 | ||
1294 | /* Update the old flags now with changes made above. */ | |
1295 | old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; | |
1296 | elf_elfheader (obfd)->e_flags = old_flags; | |
1297 | if (old_partial != (old_flags & EF_FRV_CPU_MASK)) | |
1298 | bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); | |
1299 | ||
1300 | if (error) | |
1301 | bfd_set_error (bfd_error_bad_value); | |
1302 | ||
1303 | return !error; | |
1304 | } | |
1305 | ||
1306 | \f | |
1307 | boolean | |
1308 | frv_elf_print_private_bfd_data (abfd, ptr) | |
1309 | bfd *abfd; | |
1310 | PTR ptr; | |
1311 | { | |
1312 | FILE *file = (FILE *) ptr; | |
1313 | flagword flags; | |
1314 | ||
1315 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1316 | ||
1317 | /* Print normal ELF private data. */ | |
1318 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1319 | ||
1320 | flags = elf_elfheader (abfd)->e_flags; | |
1321 | fprintf (file, _("private flags = 0x%lx:"), (long)flags); | |
1322 | ||
1323 | switch (flags & EF_FRV_CPU_MASK) | |
1324 | { | |
1325 | default: break; | |
1326 | case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; | |
1327 | case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; | |
1328 | case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; | |
1329 | case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; | |
1330 | case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; | |
1331 | } | |
1332 | ||
1333 | switch (flags & EF_FRV_GPR_MASK) | |
1334 | { | |
1335 | default: break; | |
1336 | case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; | |
1337 | case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; | |
1338 | } | |
1339 | ||
1340 | switch (flags & EF_FRV_FPR_MASK) | |
1341 | { | |
1342 | default: break; | |
1343 | case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; | |
1344 | case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; | |
1345 | case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; | |
1346 | } | |
1347 | ||
1348 | switch (flags & EF_FRV_DWORD_MASK) | |
1349 | { | |
1350 | default: break; | |
1351 | case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; | |
1352 | case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; | |
1353 | } | |
1354 | ||
1355 | if (flags & EF_FRV_DOUBLE) | |
1356 | fprintf (file, " -mdouble"); | |
1357 | ||
1358 | if (flags & EF_FRV_MEDIA) | |
1359 | fprintf (file, " -mmedia"); | |
1360 | ||
1361 | if (flags & EF_FRV_MULADD) | |
1362 | fprintf (file, " -mmuladd"); | |
1363 | ||
1364 | if (flags & EF_FRV_PIC) | |
1365 | fprintf (file, " -fpic"); | |
1366 | ||
1367 | if (flags & EF_FRV_BIGPIC) | |
1368 | fprintf (file, " -fPIC"); | |
1369 | ||
1370 | if (flags & EF_FRV_NON_PIC_RELOCS) | |
1371 | fprintf (file, " non-pic relocations"); | |
1372 | ||
1373 | if (flags & EF_FRV_G0) | |
1374 | fprintf (file, " -G0"); | |
1375 | ||
1376 | fputc ('\n', file); | |
1377 | return true; | |
1378 | } | |
1379 | ||
1380 | \f | |
1381 | #define ELF_ARCH bfd_arch_frv | |
1382 | #define ELF_MACHINE_CODE EM_CYGNUS_FRV | |
1383 | #define ELF_MAXPAGESIZE 0x1000 | |
1384 | ||
1385 | #define TARGET_BIG_SYM bfd_elf32_frv_vec | |
1386 | #define TARGET_BIG_NAME "elf32-frv" | |
1387 | ||
1388 | #define elf_info_to_howto_rel NULL | |
1389 | #define elf_info_to_howto frv_info_to_howto_rela | |
1390 | #define elf_backend_relocate_section elf32_frv_relocate_section | |
1391 | #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook | |
1392 | #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook | |
1393 | #define elf_backend_check_relocs elf32_frv_check_relocs | |
1394 | #define elf_backend_object_p elf32_frv_object_p | |
1395 | #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook | |
1396 | ||
1397 | #define elf_backend_can_gc_sections 1 | |
1398 | ||
1399 | #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup | |
1400 | #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags | |
1401 | #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data | |
1402 | #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data | |
1403 | #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data | |
1404 | ||
1405 | #include "elf32-target.h" |