]>
Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* V850-specific support for 32-bit ELF |
7898deda NC |
2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
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 | |
9 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
252b5132 RH |
21 | /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char |
22 | dependencies. As is the gas & simulator code or the v850. */ | |
23 | ||
252b5132 RH |
24 | #include "bfd.h" |
25 | #include "sysdep.h" | |
26 | #include "bfdlink.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | #include "elf/v850.h" | |
e12dd2ea | 30 | #include "libiberty.h" |
252b5132 | 31 | |
e12dd2ea | 32 | /* Sign-extend a 24-bit number. */ |
252b5132 | 33 | #define SEXT24(x) ((((x) & 0xffffff) ^ (~ 0x7fffff)) + 0x800000) |
435b1e90 | 34 | |
252b5132 RH |
35 | static reloc_howto_type *v850_elf_reloc_type_lookup |
36 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
37 | static void v850_elf_info_to_howto_rel | |
38 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
39 | static void v850_elf_info_to_howto_rela | |
40 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
41 | static bfd_reloc_status_type v850_elf_reloc | |
42 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
43 | static boolean v850_elf_is_local_label_name | |
44 | PARAMS ((bfd *, const char *)); | |
45 | static boolean v850_elf_relocate_section | |
46 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
47 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
48 | static bfd_reloc_status_type v850_elf_perform_relocation | |
49 | PARAMS ((bfd *, int, bfd_vma, bfd_byte *)); | |
50 | static boolean v850_elf_check_relocs | |
51 | PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *)); | |
52 | static void remember_hi16s_reloc | |
53 | PARAMS ((bfd *, bfd_vma, bfd_byte *)); | |
54 | static bfd_byte * find_remembered_hi16s_reloc | |
55 | PARAMS ((bfd_vma, boolean *)); | |
56 | static bfd_reloc_status_type v850_elf_final_link_relocate | |
57 | PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, bfd_vma, | |
58 | bfd_vma, bfd_vma, struct bfd_link_info *, asection *, int)); | |
59 | static boolean v850_elf_object_p | |
60 | PARAMS ((bfd *)); | |
61 | static boolean v850_elf_fake_sections | |
62 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); | |
63 | static void v850_elf_final_write_processing | |
64 | PARAMS ((bfd *, boolean)); | |
65 | static boolean v850_elf_set_private_flags | |
66 | PARAMS ((bfd *, flagword)); | |
67 | static boolean v850_elf_copy_private_bfd_data | |
68 | PARAMS ((bfd *, bfd *)); | |
69 | static boolean v850_elf_merge_private_bfd_data | |
70 | PARAMS ((bfd *, bfd *)); | |
71 | static boolean v850_elf_print_private_bfd_data | |
72 | PARAMS ((bfd *, PTR)); | |
73 | static boolean v850_elf_section_from_bfd_section | |
74 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *)); | |
75 | static void v850_elf_symbol_processing | |
76 | PARAMS ((bfd *, asymbol *)); | |
77 | static boolean v850_elf_add_symbol_hook | |
78 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
79 | const char **, flagword *, asection **, bfd_vma *)); | |
80 | static boolean v850_elf_link_output_symbol_hook | |
81 | PARAMS ((bfd *, struct bfd_link_info *, const char *, | |
82 | Elf_Internal_Sym *, asection *)); | |
83 | static boolean v850_elf_section_from_shdr | |
84 | PARAMS ((bfd *, Elf_Internal_Shdr *, char *)); | |
e12dd2ea NC |
85 | static boolean v850_elf_gc_sweep_hook |
86 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
87 | const Elf_Internal_Rela *)); | |
88 | static asection * v850_elf_gc_mark_hook | |
89 | PARAMS ((bfd *, struct bfd_link_info *, | |
90 | Elf_Internal_Rela *, struct elf_link_hash_entry *, | |
91 | Elf_Internal_Sym *)); | |
92 | ||
93 | /* Note: It is REQUIRED that the 'type' value of each entry | |
94 | in this array match the index of the entry in the array. */ | |
252b5132 RH |
95 | static reloc_howto_type v850_elf_howto_table[] = |
96 | { | |
97 | /* This reloc does nothing. */ | |
98 | HOWTO (R_V850_NONE, /* type */ | |
99 | 0, /* rightshift */ | |
100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
101 | 32, /* bitsize */ | |
102 | false, /* pc_relative */ | |
103 | 0, /* bitpos */ | |
104 | complain_overflow_bitfield, /* complain_on_overflow */ | |
105 | bfd_elf_generic_reloc, /* special_function */ | |
106 | "R_V850_NONE", /* name */ | |
107 | false, /* partial_inplace */ | |
108 | 0, /* src_mask */ | |
109 | 0, /* dst_mask */ | |
110 | false), /* pcrel_offset */ | |
111 | ||
435b1e90 | 112 | /* A PC relative 9 bit branch. */ |
252b5132 RH |
113 | HOWTO (R_V850_9_PCREL, /* type */ |
114 | 2, /* rightshift */ | |
115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
116 | 26, /* bitsize */ | |
117 | true, /* pc_relative */ | |
118 | 0, /* bitpos */ | |
119 | complain_overflow_bitfield, /* complain_on_overflow */ | |
120 | v850_elf_reloc, /* special_function */ | |
121 | "R_V850_9_PCREL", /* name */ | |
122 | false, /* partial_inplace */ | |
123 | 0x00ffffff, /* src_mask */ | |
124 | 0x00ffffff, /* dst_mask */ | |
125 | true), /* pcrel_offset */ | |
126 | ||
435b1e90 | 127 | /* A PC relative 22 bit branch. */ |
252b5132 RH |
128 | HOWTO (R_V850_22_PCREL, /* type */ |
129 | 2, /* rightshift */ | |
130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
131 | 22, /* bitsize */ | |
132 | true, /* pc_relative */ | |
133 | 7, /* bitpos */ | |
134 | complain_overflow_signed, /* complain_on_overflow */ | |
135 | v850_elf_reloc, /* special_function */ | |
136 | "R_V850_22_PCREL", /* name */ | |
137 | false, /* partial_inplace */ | |
138 | 0x07ffff80, /* src_mask */ | |
139 | 0x07ffff80, /* dst_mask */ | |
140 | true), /* pcrel_offset */ | |
141 | ||
142 | /* High 16 bits of symbol value. */ | |
143 | HOWTO (R_V850_HI16_S, /* type */ | |
144 | 0, /* rightshift */ | |
145 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
146 | 16, /* bitsize */ | |
147 | false, /* pc_relative */ | |
148 | 0, /* bitpos */ | |
149 | complain_overflow_dont, /* complain_on_overflow */ | |
150 | v850_elf_reloc, /* special_function */ | |
151 | "R_V850_HI16_S", /* name */ | |
5c746d90 | 152 | false, /* partial_inplace */ |
252b5132 RH |
153 | 0xffff, /* src_mask */ |
154 | 0xffff, /* dst_mask */ | |
155 | false), /* pcrel_offset */ | |
156 | ||
157 | /* High 16 bits of symbol value. */ | |
158 | HOWTO (R_V850_HI16, /* type */ | |
159 | 0, /* rightshift */ | |
160 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
161 | 16, /* bitsize */ | |
162 | false, /* pc_relative */ | |
163 | 0, /* bitpos */ | |
164 | complain_overflow_dont, /* complain_on_overflow */ | |
165 | v850_elf_reloc, /* special_function */ | |
166 | "R_V850_HI16", /* name */ | |
5c746d90 | 167 | false, /* partial_inplace */ |
252b5132 RH |
168 | 0xffff, /* src_mask */ |
169 | 0xffff, /* dst_mask */ | |
170 | false), /* pcrel_offset */ | |
171 | ||
172 | /* Low 16 bits of symbol value. */ | |
173 | HOWTO (R_V850_LO16, /* type */ | |
174 | 0, /* rightshift */ | |
175 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
176 | 16, /* bitsize */ | |
177 | false, /* pc_relative */ | |
178 | 0, /* bitpos */ | |
179 | complain_overflow_dont, /* complain_on_overflow */ | |
180 | v850_elf_reloc, /* special_function */ | |
181 | "R_V850_LO16", /* name */ | |
5c746d90 | 182 | false, /* partial_inplace */ |
252b5132 RH |
183 | 0xffff, /* src_mask */ |
184 | 0xffff, /* dst_mask */ | |
185 | false), /* pcrel_offset */ | |
186 | ||
187 | /* Simple 32bit reloc. */ | |
188 | HOWTO (R_V850_32, /* type */ | |
189 | 0, /* rightshift */ | |
190 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
191 | 32, /* bitsize */ | |
192 | false, /* pc_relative */ | |
193 | 0, /* bitpos */ | |
194 | complain_overflow_dont, /* complain_on_overflow */ | |
195 | v850_elf_reloc, /* special_function */ | |
196 | "R_V850_32", /* name */ | |
5c746d90 | 197 | false, /* partial_inplace */ |
252b5132 RH |
198 | 0xffffffff, /* src_mask */ |
199 | 0xffffffff, /* dst_mask */ | |
200 | false), /* pcrel_offset */ | |
201 | ||
202 | /* Simple 16bit reloc. */ | |
203 | HOWTO (R_V850_16, /* type */ | |
204 | 0, /* rightshift */ | |
205 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
206 | 16, /* bitsize */ | |
207 | false, /* pc_relative */ | |
208 | 0, /* bitpos */ | |
209 | complain_overflow_dont, /* complain_on_overflow */ | |
210 | bfd_elf_generic_reloc, /* special_function */ | |
211 | "R_V850_16", /* name */ | |
5c746d90 | 212 | false, /* partial_inplace */ |
252b5132 RH |
213 | 0xffff, /* src_mask */ |
214 | 0xffff, /* dst_mask */ | |
215 | false), /* pcrel_offset */ | |
216 | ||
217 | /* Simple 8bit reloc. */ | |
218 | HOWTO (R_V850_8, /* type */ | |
219 | 0, /* rightshift */ | |
220 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
221 | 8, /* bitsize */ | |
222 | false, /* pc_relative */ | |
223 | 0, /* bitpos */ | |
224 | complain_overflow_dont, /* complain_on_overflow */ | |
225 | bfd_elf_generic_reloc, /* special_function */ | |
226 | "R_V850_8", /* name */ | |
5c746d90 | 227 | false, /* partial_inplace */ |
252b5132 RH |
228 | 0xff, /* src_mask */ |
229 | 0xff, /* dst_mask */ | |
230 | false), /* pcrel_offset */ | |
231 | ||
232 | /* 16 bit offset from the short data area pointer. */ | |
233 | HOWTO (R_V850_SDA_16_16_OFFSET, /* type */ | |
234 | 0, /* rightshift */ | |
235 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 16, /* bitsize */ | |
237 | false, /* pc_relative */ | |
238 | 0, /* bitpos */ | |
239 | complain_overflow_dont, /* complain_on_overflow */ | |
240 | v850_elf_reloc, /* special_function */ | |
241 | "R_V850_SDA_16_16_OFFSET", /* name */ | |
242 | false, /* partial_inplace */ | |
243 | 0xffff, /* src_mask */ | |
244 | 0xffff, /* dst_mask */ | |
245 | false), /* pcrel_offset */ | |
246 | ||
247 | /* 15 bit offset from the short data area pointer. */ | |
248 | HOWTO (R_V850_SDA_15_16_OFFSET, /* type */ | |
249 | 1, /* rightshift */ | |
250 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 16, /* bitsize */ | |
252 | false, /* pc_relative */ | |
253 | 1, /* bitpos */ | |
254 | complain_overflow_dont, /* complain_on_overflow */ | |
255 | v850_elf_reloc, /* special_function */ | |
256 | "R_V850_SDA_15_16_OFFSET", /* name */ | |
257 | false, /* partial_inplace */ | |
258 | 0xfffe, /* src_mask */ | |
259 | 0xfffe, /* dst_mask */ | |
260 | false), /* pcrel_offset */ | |
261 | ||
262 | /* 16 bit offset from the zero data area pointer. */ | |
263 | HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */ | |
264 | 0, /* rightshift */ | |
265 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 16, /* bitsize */ | |
267 | false, /* pc_relative */ | |
268 | 0, /* bitpos */ | |
269 | complain_overflow_dont, /* complain_on_overflow */ | |
270 | v850_elf_reloc, /* special_function */ | |
271 | "R_V850_ZDA_16_16_OFFSET", /* name */ | |
272 | false, /* partial_inplace */ | |
273 | 0xffff, /* src_mask */ | |
274 | 0xffff, /* dst_mask */ | |
275 | false), /* pcrel_offset */ | |
276 | ||
277 | /* 15 bit offset from the zero data area pointer. */ | |
278 | HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */ | |
279 | 1, /* rightshift */ | |
280 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 16, /* bitsize */ | |
282 | false, /* pc_relative */ | |
283 | 1, /* bitpos */ | |
284 | complain_overflow_dont, /* complain_on_overflow */ | |
285 | v850_elf_reloc, /* special_function */ | |
286 | "R_V850_ZDA_15_16_OFFSET", /* name */ | |
287 | false, /* partial_inplace */ | |
288 | 0xfffe, /* src_mask */ | |
289 | 0xfffe, /* dst_mask */ | |
290 | false), /* pcrel_offset */ | |
291 | ||
292 | /* 6 bit offset from the tiny data area pointer. */ | |
293 | HOWTO (R_V850_TDA_6_8_OFFSET, /* type */ | |
294 | 2, /* rightshift */ | |
295 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 8, /* bitsize */ | |
297 | false, /* pc_relative */ | |
298 | 1, /* bitpos */ | |
299 | complain_overflow_dont, /* complain_on_overflow */ | |
300 | v850_elf_reloc, /* special_function */ | |
301 | "R_V850_TDA_6_8_OFFSET", /* name */ | |
302 | false, /* partial_inplace */ | |
303 | 0x7e, /* src_mask */ | |
304 | 0x7e, /* dst_mask */ | |
305 | false), /* pcrel_offset */ | |
306 | ||
307 | /* 8 bit offset from the tiny data area pointer. */ | |
308 | HOWTO (R_V850_TDA_7_8_OFFSET, /* type */ | |
309 | 1, /* rightshift */ | |
310 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 8, /* bitsize */ | |
312 | false, /* pc_relative */ | |
313 | 0, /* bitpos */ | |
314 | complain_overflow_dont, /* complain_on_overflow */ | |
315 | v850_elf_reloc, /* special_function */ | |
316 | "R_V850_TDA_7_8_OFFSET", /* name */ | |
317 | false, /* partial_inplace */ | |
318 | 0x7f, /* src_mask */ | |
319 | 0x7f, /* dst_mask */ | |
320 | false), /* pcrel_offset */ | |
435b1e90 | 321 | |
252b5132 RH |
322 | /* 7 bit offset from the tiny data area pointer. */ |
323 | HOWTO (R_V850_TDA_7_7_OFFSET, /* type */ | |
324 | 0, /* rightshift */ | |
325 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
326 | 7, /* bitsize */ | |
327 | false, /* pc_relative */ | |
328 | 0, /* bitpos */ | |
329 | complain_overflow_dont, /* complain_on_overflow */ | |
330 | v850_elf_reloc, /* special_function */ | |
331 | "R_V850_TDA_7_7_OFFSET", /* name */ | |
332 | false, /* partial_inplace */ | |
333 | 0x7f, /* src_mask */ | |
334 | 0x7f, /* dst_mask */ | |
335 | false), /* pcrel_offset */ | |
336 | ||
337 | /* 16 bit offset from the tiny data area pointer! */ | |
338 | HOWTO (R_V850_TDA_16_16_OFFSET, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
342 | false, /* pc_relative */ | |
343 | 0, /* bitpos */ | |
344 | complain_overflow_dont, /* complain_on_overflow */ | |
345 | v850_elf_reloc, /* special_function */ | |
346 | "R_V850_TDA_16_16_OFFSET", /* name */ | |
347 | false, /* partial_inplace */ | |
348 | 0xffff, /* src_mask */ | |
349 | 0xfff, /* dst_mask */ | |
350 | false), /* pcrel_offset */ | |
351 | ||
352 | /* 5 bit offset from the tiny data area pointer. */ | |
353 | HOWTO (R_V850_TDA_4_5_OFFSET, /* type */ | |
354 | 1, /* rightshift */ | |
355 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 5, /* bitsize */ | |
357 | false, /* pc_relative */ | |
358 | 0, /* bitpos */ | |
359 | complain_overflow_dont, /* complain_on_overflow */ | |
360 | v850_elf_reloc, /* special_function */ | |
361 | "R_V850_TDA_4_5_OFFSET", /* name */ | |
362 | false, /* partial_inplace */ | |
363 | 0x0f, /* src_mask */ | |
364 | 0x0f, /* dst_mask */ | |
365 | false), /* pcrel_offset */ | |
366 | ||
367 | /* 4 bit offset from the tiny data area pointer. */ | |
368 | HOWTO (R_V850_TDA_4_4_OFFSET, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 4, /* bitsize */ | |
372 | false, /* pc_relative */ | |
373 | 0, /* bitpos */ | |
374 | complain_overflow_dont, /* complain_on_overflow */ | |
375 | v850_elf_reloc, /* special_function */ | |
376 | "R_V850_TDA_4_4_OFFSET", /* name */ | |
377 | false, /* partial_inplace */ | |
378 | 0x0f, /* src_mask */ | |
379 | 0x0f, /* dst_mask */ | |
380 | false), /* pcrel_offset */ | |
381 | ||
382 | /* 16 bit offset from the short data area pointer. */ | |
383 | HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */ | |
384 | 0, /* rightshift */ | |
385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
386 | 16, /* bitsize */ | |
387 | false, /* pc_relative */ | |
388 | 0, /* bitpos */ | |
389 | complain_overflow_dont, /* complain_on_overflow */ | |
390 | v850_elf_reloc, /* special_function */ | |
391 | "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */ | |
392 | false, /* partial_inplace */ | |
393 | 0xfffe0020, /* src_mask */ | |
394 | 0xfffe0020, /* dst_mask */ | |
395 | false), /* pcrel_offset */ | |
396 | ||
397 | /* 16 bit offset from the zero data area pointer. */ | |
398 | HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */ | |
399 | 0, /* rightshift */ | |
400 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
401 | 16, /* bitsize */ | |
402 | false, /* pc_relative */ | |
403 | 0, /* bitpos */ | |
404 | complain_overflow_dont, /* complain_on_overflow */ | |
405 | v850_elf_reloc, /* special_function */ | |
406 | "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */ | |
407 | false, /* partial_inplace */ | |
408 | 0xfffe0020, /* src_mask */ | |
409 | 0xfffe0020, /* dst_mask */ | |
410 | false), /* pcrel_offset */ | |
411 | ||
412 | /* 6 bit offset from the call table base pointer. */ | |
413 | HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */ | |
414 | 0, /* rightshift */ | |
415 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 7, /* bitsize */ | |
417 | false, /* pc_relative */ | |
418 | 0, /* bitpos */ | |
419 | complain_overflow_dont, /* complain_on_overflow */ | |
420 | v850_elf_reloc, /* special_function */ | |
421 | "R_V850_CALLT_6_7_OFFSET", /* name */ | |
422 | false, /* partial_inplace */ | |
423 | 0x3f, /* src_mask */ | |
424 | 0x3f, /* dst_mask */ | |
425 | false), /* pcrel_offset */ | |
426 | ||
427 | /* 16 bit offset from the call table base pointer. */ | |
428 | HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */ | |
429 | 0, /* rightshift */ | |
430 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 16, /* bitsize */ | |
432 | false, /* pc_relative */ | |
433 | 0, /* bitpos */ | |
434 | complain_overflow_dont, /* complain_on_overflow */ | |
435 | v850_elf_reloc, /* special_function */ | |
436 | "R_V850_CALLT_16_16_OFFSET", /* name */ | |
437 | false, /* partial_inplace */ | |
438 | 0xffff, /* src_mask */ | |
439 | 0xffff, /* dst_mask */ | |
440 | false), /* pcrel_offset */ | |
441 | ||
442 | /* GNU extension to record C++ vtable hierarchy */ | |
443 | HOWTO (R_V850_GNU_VTINHERIT, /* type */ | |
444 | 0, /* rightshift */ | |
445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
446 | 0, /* bitsize */ | |
447 | false, /* pc_relative */ | |
448 | 0, /* bitpos */ | |
449 | complain_overflow_dont, /* complain_on_overflow */ | |
450 | NULL, /* special_function */ | |
451 | "R_V850_GNU_VTINHERIT", /* name */ | |
452 | false, /* partial_inplace */ | |
453 | 0, /* src_mask */ | |
454 | 0, /* dst_mask */ | |
455 | false), /* pcrel_offset */ | |
456 | ||
457 | /* GNU extension to record C++ vtable member usage */ | |
458 | HOWTO (R_V850_GNU_VTENTRY, /* type */ | |
459 | 0, /* rightshift */ | |
460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 0, /* bitsize */ | |
462 | false, /* pc_relative */ | |
463 | 0, /* bitpos */ | |
464 | complain_overflow_dont, /* complain_on_overflow */ | |
465 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
466 | "R_V850_GNU_VTENTRY", /* name */ | |
467 | false, /* partial_inplace */ | |
468 | 0, /* src_mask */ | |
469 | 0, /* dst_mask */ | |
470 | false), /* pcrel_offset */ | |
435b1e90 | 471 | |
252b5132 RH |
472 | }; |
473 | ||
474 | /* Map BFD reloc types to V850 ELF reloc types. */ | |
475 | ||
476 | struct v850_elf_reloc_map | |
477 | { | |
478 | /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an | |
479 | unsigned char. */ | |
480 | bfd_reloc_code_real_type bfd_reloc_val; | |
917583ad | 481 | unsigned int elf_reloc_val; |
252b5132 RH |
482 | }; |
483 | ||
484 | static const struct v850_elf_reloc_map v850_elf_reloc_map[] = | |
485 | { | |
486 | { BFD_RELOC_NONE, R_V850_NONE }, | |
487 | { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL }, | |
488 | { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL }, | |
489 | { BFD_RELOC_HI16_S, R_V850_HI16_S }, | |
490 | { BFD_RELOC_HI16, R_V850_HI16 }, | |
491 | { BFD_RELOC_LO16, R_V850_LO16 }, | |
492 | { BFD_RELOC_32, R_V850_32 }, | |
493 | { BFD_RELOC_16, R_V850_16 }, | |
494 | { BFD_RELOC_8, R_V850_8 }, | |
495 | { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET }, | |
496 | { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, | |
497 | { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, | |
498 | { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, | |
499 | { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, | |
500 | { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, | |
501 | { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, | |
502 | { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, | |
503 | { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, | |
504 | { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, | |
505 | { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, | |
506 | { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, | |
507 | { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, | |
508 | { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, | |
509 | { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT }, | |
510 | { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY }, | |
511 | ||
512 | }; | |
252b5132 | 513 | \f |
e12dd2ea NC |
514 | /* Map a bfd relocation into the appropriate howto structure. */ |
515 | ||
252b5132 RH |
516 | static reloc_howto_type * |
517 | v850_elf_reloc_type_lookup (abfd, code) | |
5f771d47 | 518 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
519 | bfd_reloc_code_real_type code; |
520 | { | |
521 | unsigned int i; | |
522 | ||
e12dd2ea NC |
523 | for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;) |
524 | if (v850_elf_reloc_map[i].bfd_reloc_val == code) | |
525 | { | |
917583ad | 526 | unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val; |
fbad9a25 NC |
527 | |
528 | BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val); | |
435b1e90 | 529 | |
fbad9a25 | 530 | return v850_elf_howto_table + elf_reloc_val; |
e12dd2ea | 531 | } |
252b5132 RH |
532 | |
533 | return NULL; | |
534 | } | |
252b5132 RH |
535 | \f |
536 | /* Set the howto pointer for an V850 ELF reloc. */ | |
e12dd2ea | 537 | |
252b5132 RH |
538 | static void |
539 | v850_elf_info_to_howto_rel (abfd, cache_ptr, dst) | |
5f771d47 | 540 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
541 | arelent * cache_ptr; |
542 | Elf32_Internal_Rel * dst; | |
543 | { | |
544 | unsigned int r_type; | |
545 | ||
546 | r_type = ELF32_R_TYPE (dst->r_info); | |
547 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
548 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
549 | } | |
550 | ||
435b1e90 | 551 | /* Set the howto pointer for a V850 ELF reloc (type RELA). */ |
252b5132 RH |
552 | static void |
553 | v850_elf_info_to_howto_rela (abfd, cache_ptr, dst) | |
5f771d47 | 554 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
555 | arelent * cache_ptr; |
556 | Elf32_Internal_Rela *dst; | |
557 | { | |
558 | unsigned int r_type; | |
559 | ||
560 | r_type = ELF32_R_TYPE (dst->r_info); | |
561 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
562 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
563 | } | |
252b5132 RH |
564 | \f |
565 | /* Look through the relocs for a section during the first phase, and | |
566 | allocate space in the global offset table or procedure linkage | |
567 | table. */ | |
568 | ||
569 | static boolean | |
570 | v850_elf_check_relocs (abfd, info, sec, relocs) | |
571 | bfd * abfd; | |
572 | struct bfd_link_info * info; | |
573 | asection * sec; | |
574 | const Elf_Internal_Rela * relocs; | |
575 | { | |
576 | boolean ret = true; | |
577 | bfd *dynobj; | |
578 | Elf_Internal_Shdr *symtab_hdr; | |
579 | struct elf_link_hash_entry **sym_hashes; | |
580 | const Elf_Internal_Rela *rel; | |
581 | const Elf_Internal_Rela *rel_end; | |
582 | asection *sreloc; | |
583 | enum v850_reloc_type r_type; | |
584 | int other = 0; | |
585 | const char *common = (const char *)0; | |
586 | ||
587 | if (info->relocateable) | |
588 | return true; | |
589 | ||
590 | #ifdef DEBUG | |
591 | fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n", | |
592 | bfd_get_section_name (abfd, sec), | |
593 | bfd_get_filename (abfd)); | |
594 | #endif | |
595 | ||
596 | dynobj = elf_hash_table (info)->dynobj; | |
597 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
598 | sym_hashes = elf_sym_hashes (abfd); | |
599 | sreloc = NULL; | |
600 | ||
601 | rel_end = relocs + sec->reloc_count; | |
602 | for (rel = relocs; rel < rel_end; rel++) | |
603 | { | |
604 | unsigned long r_symndx; | |
605 | struct elf_link_hash_entry *h; | |
606 | ||
607 | r_symndx = ELF32_R_SYM (rel->r_info); | |
608 | if (r_symndx < symtab_hdr->sh_info) | |
609 | h = NULL; | |
610 | else | |
611 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
612 | ||
613 | r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info); | |
614 | switch (r_type) | |
615 | { | |
616 | default: | |
617 | case R_V850_NONE: | |
618 | case R_V850_9_PCREL: | |
619 | case R_V850_22_PCREL: | |
620 | case R_V850_HI16_S: | |
621 | case R_V850_HI16: | |
622 | case R_V850_LO16: | |
623 | case R_V850_32: | |
624 | case R_V850_16: | |
625 | case R_V850_8: | |
626 | case R_V850_CALLT_6_7_OFFSET: | |
627 | case R_V850_CALLT_16_16_OFFSET: | |
628 | break; | |
629 | ||
630 | /* This relocation describes the C++ object vtable hierarchy. | |
631 | Reconstruct it for later use during GC. */ | |
632 | case R_V850_GNU_VTINHERIT: | |
633 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
634 | return false; | |
635 | break; | |
636 | ||
e12dd2ea NC |
637 | /* This relocation describes which C++ vtable entries |
638 | are actually used. Record for later use during GC. */ | |
252b5132 RH |
639 | case R_V850_GNU_VTENTRY: |
640 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
641 | return false; | |
642 | break; | |
643 | ||
644 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
645 | case R_V850_SDA_16_16_OFFSET: | |
646 | case R_V850_SDA_15_16_OFFSET: | |
647 | other = V850_OTHER_SDA; | |
648 | common = ".scommon"; | |
649 | goto small_data_common; | |
435b1e90 | 650 | |
252b5132 RH |
651 | case R_V850_ZDA_16_16_SPLIT_OFFSET: |
652 | case R_V850_ZDA_16_16_OFFSET: | |
653 | case R_V850_ZDA_15_16_OFFSET: | |
654 | other = V850_OTHER_ZDA; | |
655 | common = ".zcommon"; | |
656 | goto small_data_common; | |
435b1e90 | 657 | |
252b5132 RH |
658 | case R_V850_TDA_4_5_OFFSET: |
659 | case R_V850_TDA_4_4_OFFSET: | |
660 | case R_V850_TDA_6_8_OFFSET: | |
661 | case R_V850_TDA_7_8_OFFSET: | |
662 | case R_V850_TDA_7_7_OFFSET: | |
663 | case R_V850_TDA_16_16_OFFSET: | |
664 | other = V850_OTHER_TDA; | |
665 | common = ".tcommon"; | |
666 | /* fall through */ | |
667 | ||
668 | #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA) | |
669 | ||
670 | small_data_common: | |
671 | if (h) | |
672 | { | |
e12dd2ea NC |
673 | /* Flag which type of relocation was used. */ |
674 | h->other |= other; | |
252b5132 RH |
675 | if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK) |
676 | && (h->other & V850_OTHER_ERROR) == 0) | |
677 | { | |
678 | const char * msg; | |
679 | static char buff[200]; /* XXX */ | |
680 | ||
681 | switch (h->other & V850_OTHER_MASK) | |
682 | { | |
683 | default: | |
684 | msg = _("Variable `%s' cannot occupy in multiple small data regions"); | |
685 | break; | |
686 | case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA: | |
687 | msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions"); | |
688 | break; | |
689 | case V850_OTHER_SDA | V850_OTHER_ZDA: | |
690 | msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously"); | |
691 | break; | |
692 | case V850_OTHER_SDA | V850_OTHER_TDA: | |
693 | msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously"); | |
694 | break; | |
695 | case V850_OTHER_ZDA | V850_OTHER_TDA: | |
696 | msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously"); | |
697 | break; | |
698 | } | |
699 | ||
700 | sprintf (buff, msg, h->root.root.string); | |
701 | info->callbacks->warning (info, buff, h->root.root.string, | |
702 | abfd, h->root.u.def.section, 0); | |
703 | ||
704 | bfd_set_error (bfd_error_bad_value); | |
705 | h->other |= V850_OTHER_ERROR; | |
706 | ret = false; | |
707 | } | |
708 | } | |
709 | ||
710 | if (h && h->root.type == bfd_link_hash_common | |
711 | && h->root.u.c.p | |
712 | && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON")) | |
713 | { | |
e12dd2ea NC |
714 | asection * section; |
715 | ||
716 | section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common); | |
252b5132 RH |
717 | section->flags |= SEC_IS_COMMON; |
718 | } | |
719 | ||
720 | #ifdef DEBUG | |
721 | fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n", | |
722 | v850_elf_howto_table[ (int)r_type ].name, | |
723 | (h && h->root.root.string) ? h->root.root.string : "<unknown>", | |
724 | (h->root.type == bfd_link_hash_common) ? ", symbol is common" : ""); | |
725 | #endif | |
726 | break; | |
727 | } | |
728 | } | |
729 | ||
730 | return ret; | |
731 | } | |
732 | ||
e12dd2ea NC |
733 | /* In the old version, when an entry was checked out from the table, |
734 | it was deleted. This produced an error if the entry was needed | |
735 | more than once, as the second attempted retry failed. | |
736 | ||
737 | In the current version, the entry is not deleted, instead we set | |
738 | the field 'found' to true. If a second lookup matches the same | |
739 | entry, then we know that the hi16s reloc has already been updated | |
740 | and does not need to be updated a second time. | |
741 | ||
742 | TODO - TOFIX: If it is possible that we need to restore 2 different | |
743 | addresses from the same table entry, where the first generates an | |
744 | overflow, whilst the second do not, then this code will fail. */ | |
252b5132 RH |
745 | |
746 | typedef struct hi16s_location | |
747 | { | |
748 | bfd_vma addend; | |
749 | bfd_byte * address; | |
750 | unsigned long counter; | |
751 | boolean found; | |
752 | struct hi16s_location * next; | |
753 | } | |
754 | hi16s_location; | |
755 | ||
756 | static hi16s_location * previous_hi16s; | |
757 | static hi16s_location * free_hi16s; | |
758 | static unsigned long hi16s_counter; | |
759 | ||
760 | static void | |
761 | remember_hi16s_reloc (abfd, addend, address) | |
762 | bfd * abfd; | |
763 | bfd_vma addend; | |
764 | bfd_byte * address; | |
765 | { | |
766 | hi16s_location * entry = NULL; | |
435b1e90 | 767 | |
252b5132 RH |
768 | /* Find a free structure. */ |
769 | if (free_hi16s == NULL) | |
770 | free_hi16s = (hi16s_location *) bfd_zalloc (abfd, sizeof (* free_hi16s)); | |
771 | ||
772 | entry = free_hi16s; | |
773 | free_hi16s = free_hi16s->next; | |
435b1e90 | 774 | |
252b5132 RH |
775 | entry->addend = addend; |
776 | entry->address = address; | |
777 | entry->counter = hi16s_counter ++; | |
778 | entry->found = false; | |
779 | entry->next = previous_hi16s; | |
780 | previous_hi16s = entry; | |
435b1e90 | 781 | |
252b5132 RH |
782 | /* Cope with wrap around of our counter. */ |
783 | if (hi16s_counter == 0) | |
784 | { | |
785 | /* XXX - Assume that all counter entries differ only in their low 16 bits. */ | |
786 | for (entry = previous_hi16s; entry != NULL; entry = entry->next) | |
787 | entry->counter &= 0xffff; | |
788 | ||
789 | hi16s_counter = 0x10000; | |
790 | } | |
435b1e90 | 791 | |
252b5132 RH |
792 | return; |
793 | } | |
794 | ||
795 | static bfd_byte * | |
796 | find_remembered_hi16s_reloc (addend, already_found) | |
797 | bfd_vma addend; | |
798 | boolean * already_found; | |
799 | { | |
800 | hi16s_location * match = NULL; | |
801 | hi16s_location * entry; | |
802 | hi16s_location * previous = NULL; | |
803 | hi16s_location * prev; | |
252b5132 | 804 | bfd_byte * addr; |
435b1e90 | 805 | |
252b5132 RH |
806 | /* Search the table. Record the most recent entry that matches. */ |
807 | for (entry = previous_hi16s; entry; entry = entry->next) | |
808 | { | |
809 | if (entry->addend == addend | |
810 | && (match == NULL || match->counter < entry->counter)) | |
811 | { | |
812 | previous = prev; | |
813 | match = entry; | |
814 | } | |
435b1e90 | 815 | |
252b5132 RH |
816 | prev = entry; |
817 | } | |
818 | ||
819 | if (match == NULL) | |
820 | return NULL; | |
821 | ||
822 | /* Extract the address. */ | |
823 | addr = match->address; | |
824 | ||
825 | /* Remeber if this entry has already been used before. */ | |
826 | if (already_found) | |
827 | * already_found = match->found; | |
828 | ||
829 | /* Note that this entry has now been used. */ | |
830 | match->found = true; | |
435b1e90 | 831 | |
252b5132 | 832 | return addr; |
435b1e90 | 833 | } |
252b5132 RH |
834 | |
835 | /* FIXME: The code here probably ought to be removed and the code in reloc.c | |
836 | allowed to do its stuff instead. At least for most of the relocs, anwyay. */ | |
e12dd2ea | 837 | |
252b5132 RH |
838 | static bfd_reloc_status_type |
839 | v850_elf_perform_relocation (abfd, r_type, addend, address) | |
840 | bfd * abfd; | |
841 | int r_type; | |
842 | bfd_vma addend; | |
843 | bfd_byte * address; | |
844 | { | |
845 | unsigned long insn; | |
846 | bfd_signed_vma saddend = (bfd_signed_vma) addend; | |
435b1e90 | 847 | |
252b5132 RH |
848 | switch (r_type) |
849 | { | |
850 | default: | |
851 | /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */ | |
852 | return bfd_reloc_notsupported; | |
435b1e90 | 853 | |
252b5132 RH |
854 | case R_V850_32: |
855 | bfd_put_32 (abfd, addend, address); | |
856 | return bfd_reloc_ok; | |
435b1e90 | 857 | |
252b5132 RH |
858 | case R_V850_22_PCREL: |
859 | if (saddend > 0x1fffff || saddend < -0x200000) | |
860 | return bfd_reloc_overflow; | |
435b1e90 | 861 | |
252b5132 RH |
862 | if ((addend % 2) != 0) |
863 | return bfd_reloc_dangerous; | |
435b1e90 | 864 | |
252b5132 RH |
865 | insn = bfd_get_32 (abfd, address); |
866 | insn &= ~0xfffe003f; | |
867 | insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16)); | |
868 | bfd_put_32 (abfd, insn, address); | |
869 | return bfd_reloc_ok; | |
435b1e90 | 870 | |
252b5132 RH |
871 | case R_V850_9_PCREL: |
872 | if (saddend > 0xff || saddend < -0x100) | |
873 | return bfd_reloc_overflow; | |
435b1e90 | 874 | |
252b5132 RH |
875 | if ((addend % 2) != 0) |
876 | return bfd_reloc_dangerous; | |
435b1e90 | 877 | |
252b5132 RH |
878 | insn = bfd_get_16 (abfd, address); |
879 | insn &= ~ 0xf870; | |
880 | insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3); | |
881 | break; | |
435b1e90 | 882 | |
252b5132 RH |
883 | case R_V850_HI16: |
884 | addend += (bfd_get_16 (abfd, address) << 16); | |
885 | addend = (addend >> 16); | |
886 | insn = addend; | |
887 | break; | |
435b1e90 | 888 | |
252b5132 RH |
889 | case R_V850_HI16_S: |
890 | /* Remember where this relocation took place. */ | |
891 | remember_hi16s_reloc (abfd, addend, address); | |
892 | ||
893 | addend += (bfd_get_16 (abfd, address) << 16); | |
894 | addend = (addend >> 16) + ((addend & 0x8000) != 0); | |
435b1e90 KH |
895 | |
896 | /* This relocation cannot overflow. */ | |
252b5132 RH |
897 | if (addend > 0x7fff) |
898 | addend = 0; | |
435b1e90 | 899 | |
252b5132 RH |
900 | insn = addend; |
901 | break; | |
435b1e90 | 902 | |
252b5132 RH |
903 | case R_V850_LO16: |
904 | /* Calculate the sum of the value stored in the instruction and the | |
905 | addend and check for overflow from the low 16 bits into the high | |
906 | 16 bits. The assembler has already done some of this: If the | |
907 | value stored in the instruction has its 15th bit set, (counting | |
908 | from zero) then the assembler will have added 1 to the value | |
909 | stored in the associated HI16S reloc. So for example, these | |
910 | relocations: | |
911 | ||
912 | movhi hi( fred ), r0, r1 | |
913 | movea lo( fred ), r1, r1 | |
914 | ||
915 | will store 0 in the value fields for the MOVHI and MOVEA instructions | |
916 | and addend will be the address of fred, but for these instructions: | |
917 | ||
918 | movhi hi( fred + 0x123456), r0, r1 | |
919 | movea lo( fred + 0x123456), r1, r1 | |
920 | ||
921 | the value stored in the MOVHI instruction will be 0x12 and the value | |
922 | stored in the MOVEA instruction will be 0x3456. If however the | |
923 | instructions were: | |
924 | ||
925 | movhi hi( fred + 0x10ffff), r0, r1 | |
926 | movea lo( fred + 0x10ffff), r1, r1 | |
927 | ||
928 | then the value stored in the MOVHI instruction would be 0x11 (not | |
929 | 0x10) and the value stored in the MOVEA instruction would be 0xffff. | |
930 | Thus (assuming for the moment that the addend is 0), at run time the | |
931 | MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction | |
932 | adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if | |
933 | the instructions were: | |
934 | ||
935 | movhi hi( fred - 1), r0, r1 | |
936 | movea lo( fred - 1), r1, r1 | |
937 | ||
938 | then 0 is stored in the MOVHI instruction and -1 is stored in the | |
939 | MOVEA instruction. | |
940 | ||
941 | Overflow can occur if the addition of the value stored in the | |
942 | instruction plus the addend sets the 15th bit when before it was clear. | |
943 | This is because the 15th bit will be sign extended into the high part, | |
944 | thus reducing its value by one, but since the 15th bit was originally | |
945 | clear, the assembler will not have added 1 to the previous HI16S reloc | |
946 | to compensate for this effect. For example: | |
947 | ||
948 | movhi hi( fred + 0x123456), r0, r1 | |
949 | movea lo( fred + 0x123456), r1, r1 | |
950 | ||
951 | The value stored in HI16S reloc is 0x12, the value stored in the LO16 | |
952 | reloc is 0x3456. If we assume that the address of fred is 0x00007000 | |
953 | then the relocations become: | |
954 | ||
955 | HI16S: 0x0012 + (0x00007000 >> 16) = 0x12 | |
956 | LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456 | |
957 | ||
958 | but when the instructions are executed, the MOVEA instruction's value | |
959 | is signed extended, so the sum becomes: | |
960 | ||
961 | 0x00120000 | |
962 | + 0xffffa456 | |
963 | ------------ | |
964 | 0x0011a456 but 'fred + 0x123456' = 0x0012a456 | |
965 | ||
966 | Note that if the 15th bit was set in the value stored in the LO16 | |
967 | reloc, then we do not have to do anything: | |
968 | ||
969 | movhi hi( fred + 0x10ffff), r0, r1 | |
970 | movea lo( fred + 0x10ffff), r1, r1 | |
971 | ||
972 | HI16S: 0x0011 + (0x00007000 >> 16) = 0x11 | |
973 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff | |
974 | ||
975 | 0x00110000 | |
976 | + 0x00006fff | |
977 | ------------ | |
978 | 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff | |
979 | ||
252b5132 RH |
980 | Overflow can also occur if the computation carries into the 16th bit |
981 | and it also results in the 15th bit having the same value as the 15th | |
982 | bit of the original value. What happens is that the HI16S reloc | |
983 | will have already examined the 15th bit of the original value and | |
984 | added 1 to the high part if the bit is set. This compensates for the | |
985 | sign extension of 15th bit of the result of the computation. But now | |
986 | there is a carry into the 16th bit, and this has not been allowed for. | |
987 | ||
988 | So, for example if fred is at address 0xf000: | |
989 | ||
990 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] | |
991 | movea lo( fred + 0xffff), r1, r1 | |
992 | ||
993 | HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001 | |
994 | LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost) | |
995 | ||
996 | 0x00010000 | |
997 | + 0xffffefff | |
998 | ------------ | |
999 | 0x0000efff but 'fred + 0xffff' = 0x0001efff | |
1000 | ||
1001 | Similarly, if the 15th bit remains clear, but overflow occurs into | |
1002 | the 16th bit then (assuming the address of fred is 0xf000): | |
1003 | ||
1004 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] | |
1005 | movea lo( fred + 0x7000), r1, r1 | |
1006 | ||
1007 | HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000 | |
1008 | LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost) | |
1009 | ||
1010 | 0x00000000 | |
1011 | + 0x00006fff | |
1012 | ------------ | |
1013 | 0x00006fff but 'fred + 0x7000' = 0x00016fff | |
435b1e90 | 1014 | |
252b5132 RH |
1015 | Note - there is no need to change anything if a carry occurs, and the |
1016 | 15th bit changes its value from being set to being clear, as the HI16S | |
1017 | reloc will have already added in 1 to the high part for us: | |
1018 | ||
1019 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] | |
1020 | movea lo( fred + 0xffff), r1, r1 | |
1021 | ||
1022 | HI16S: 0x0001 + (0x00007000 >> 16) | |
1023 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost) | |
1024 | ||
1025 | 0x00010000 | |
1026 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
1027 | ------------ | |
1028 | 0x00016fff which is right (assuming that fred is at 0x7000) | |
1029 | ||
1030 | but if the 15th bit goes from being clear to being set, then we must | |
1031 | once again handle overflow: | |
1032 | ||
1033 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] | |
1034 | movea lo( fred + 0x7000), r1, r1 | |
1035 | ||
1036 | HI16S: 0x0000 + (0x0000ffff >> 16) | |
1037 | LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16) | |
1038 | ||
1039 | 0x00000000 | |
1040 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
1041 | ------------ | |
e12dd2ea | 1042 | 0x00006fff which is wrong (assuming that fred is at 0xffff). */ |
252b5132 RH |
1043 | { |
1044 | long result; | |
1045 | ||
1046 | insn = bfd_get_16 (abfd, address); | |
1047 | result = insn + addend; | |
1048 | ||
1049 | #define BIT15_SET(x) ((x) & 0x8000) | |
1050 | #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff) | |
435b1e90 | 1051 | |
252b5132 RH |
1052 | if ((BIT15_SET (result) && ! BIT15_SET (addend)) |
1053 | || (OVERFLOWS (addend, insn) | |
1054 | && ((! BIT15_SET (insn)) || (BIT15_SET (addend))))) | |
1055 | { | |
1056 | boolean already_updated; | |
1057 | bfd_byte * hi16s_address = find_remembered_hi16s_reloc | |
1058 | (addend, & already_updated); | |
435b1e90 | 1059 | |
252b5132 RH |
1060 | /* Amend the matching HI16_S relocation. */ |
1061 | if (hi16s_address != NULL) | |
1062 | { | |
1063 | if (! already_updated) | |
1064 | { | |
1065 | insn = bfd_get_16 (abfd, hi16s_address); | |
1066 | insn += 1; | |
1067 | bfd_put_16 (abfd, insn, hi16s_address); | |
1068 | } | |
1069 | } | |
1070 | else | |
1071 | { | |
1072 | fprintf (stderr, _("FAILED to find previous HI16 reloc\n")); | |
1073 | return bfd_reloc_overflow; | |
1074 | } | |
1075 | } | |
435b1e90 | 1076 | |
252b5132 RH |
1077 | /* Do not complain if value has top bit set, as this has been anticipated. */ |
1078 | insn = result & 0xffff; | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | case R_V850_8: | |
1083 | addend += (char) bfd_get_8 (abfd, address); | |
1084 | ||
1085 | saddend = (bfd_signed_vma) addend; | |
435b1e90 | 1086 | |
252b5132 RH |
1087 | if (saddend > 0x7f || saddend < -0x80) |
1088 | return bfd_reloc_overflow; | |
1089 | ||
1090 | bfd_put_8 (abfd, addend, address); | |
1091 | return bfd_reloc_ok; | |
1092 | ||
1093 | case R_V850_CALLT_16_16_OFFSET: | |
1094 | addend += bfd_get_16 (abfd, address); | |
435b1e90 | 1095 | |
252b5132 | 1096 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1097 | |
252b5132 RH |
1098 | if (saddend > 0xffff || saddend < 0) |
1099 | return bfd_reloc_overflow; | |
1100 | ||
1101 | insn = addend; | |
1102 | break; | |
435b1e90 | 1103 | |
252b5132 RH |
1104 | case R_V850_16: |
1105 | ||
435b1e90 | 1106 | /* drop through */ |
252b5132 RH |
1107 | case R_V850_SDA_16_16_OFFSET: |
1108 | case R_V850_ZDA_16_16_OFFSET: | |
1109 | case R_V850_TDA_16_16_OFFSET: | |
1110 | addend += bfd_get_16 (abfd, address); | |
435b1e90 | 1111 | |
252b5132 | 1112 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1113 | |
252b5132 RH |
1114 | if (saddend > 0x7fff || saddend < -0x8000) |
1115 | return bfd_reloc_overflow; | |
1116 | ||
1117 | insn = addend; | |
1118 | break; | |
435b1e90 | 1119 | |
252b5132 RH |
1120 | case R_V850_SDA_15_16_OFFSET: |
1121 | case R_V850_ZDA_15_16_OFFSET: | |
1122 | insn = bfd_get_16 (abfd, address); | |
1123 | addend += (insn & 0xfffe); | |
435b1e90 | 1124 | |
252b5132 | 1125 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1126 | |
252b5132 RH |
1127 | if (saddend > 0x7ffe || saddend < -0x8000) |
1128 | return bfd_reloc_overflow; | |
435b1e90 | 1129 | |
252b5132 RH |
1130 | if (addend & 1) |
1131 | return bfd_reloc_dangerous; | |
435b1e90 | 1132 | |
252b5132 RH |
1133 | insn = (addend & ~1) | (insn & 1); |
1134 | break; | |
435b1e90 | 1135 | |
252b5132 RH |
1136 | case R_V850_TDA_6_8_OFFSET: |
1137 | insn = bfd_get_16 (abfd, address); | |
1138 | addend += ((insn & 0x7e) << 1); | |
435b1e90 | 1139 | |
252b5132 | 1140 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1141 | |
252b5132 RH |
1142 | if (saddend > 0xfc || saddend < 0) |
1143 | return bfd_reloc_overflow; | |
435b1e90 | 1144 | |
252b5132 RH |
1145 | if (addend & 3) |
1146 | return bfd_reloc_dangerous; | |
435b1e90 | 1147 | |
252b5132 RH |
1148 | insn &= 0xff81; |
1149 | insn |= (addend >> 1); | |
1150 | break; | |
435b1e90 | 1151 | |
252b5132 RH |
1152 | case R_V850_TDA_7_8_OFFSET: |
1153 | insn = bfd_get_16 (abfd, address); | |
1154 | addend += ((insn & 0x7f) << 1); | |
435b1e90 | 1155 | |
252b5132 | 1156 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1157 | |
252b5132 RH |
1158 | if (saddend > 0xfe || saddend < 0) |
1159 | return bfd_reloc_overflow; | |
435b1e90 | 1160 | |
252b5132 RH |
1161 | if (addend & 1) |
1162 | return bfd_reloc_dangerous; | |
435b1e90 | 1163 | |
252b5132 RH |
1164 | insn &= 0xff80; |
1165 | insn |= (addend >> 1); | |
1166 | break; | |
435b1e90 | 1167 | |
252b5132 RH |
1168 | case R_V850_TDA_7_7_OFFSET: |
1169 | insn = bfd_get_16 (abfd, address); | |
1170 | addend += insn & 0x7f; | |
435b1e90 | 1171 | |
252b5132 | 1172 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1173 | |
252b5132 RH |
1174 | if (saddend > 0x7f || saddend < 0) |
1175 | return bfd_reloc_overflow; | |
435b1e90 | 1176 | |
252b5132 RH |
1177 | insn &= 0xff80; |
1178 | insn |= addend; | |
1179 | break; | |
435b1e90 | 1180 | |
252b5132 RH |
1181 | case R_V850_TDA_4_5_OFFSET: |
1182 | insn = bfd_get_16 (abfd, address); | |
1183 | addend += ((insn & 0xf) << 1); | |
435b1e90 | 1184 | |
252b5132 | 1185 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1186 | |
252b5132 RH |
1187 | if (saddend > 0x1e || saddend < 0) |
1188 | return bfd_reloc_overflow; | |
435b1e90 | 1189 | |
252b5132 RH |
1190 | if (addend & 1) |
1191 | return bfd_reloc_dangerous; | |
435b1e90 | 1192 | |
252b5132 RH |
1193 | insn &= 0xfff0; |
1194 | insn |= (addend >> 1); | |
1195 | break; | |
435b1e90 | 1196 | |
252b5132 RH |
1197 | case R_V850_TDA_4_4_OFFSET: |
1198 | insn = bfd_get_16 (abfd, address); | |
1199 | addend += insn & 0xf; | |
435b1e90 | 1200 | |
252b5132 | 1201 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1202 | |
252b5132 RH |
1203 | if (saddend > 0xf || saddend < 0) |
1204 | return bfd_reloc_overflow; | |
435b1e90 | 1205 | |
252b5132 RH |
1206 | insn &= 0xfff0; |
1207 | insn |= addend; | |
1208 | break; | |
435b1e90 | 1209 | |
252b5132 RH |
1210 | case R_V850_ZDA_16_16_SPLIT_OFFSET: |
1211 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
1212 | insn = bfd_get_32 (abfd, address); | |
1213 | addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5); | |
435b1e90 | 1214 | |
252b5132 | 1215 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1216 | |
252b5132 RH |
1217 | if (saddend > 0x7fff || saddend < -0x8000) |
1218 | return bfd_reloc_overflow; | |
435b1e90 | 1219 | |
252b5132 RH |
1220 | insn &= 0x0001ffdf; |
1221 | insn |= (addend & 1) << 5; | |
1222 | insn |= (addend & ~1) << 16; | |
435b1e90 | 1223 | |
252b5132 RH |
1224 | bfd_put_32 (abfd, insn, address); |
1225 | return bfd_reloc_ok; | |
435b1e90 | 1226 | |
252b5132 RH |
1227 | case R_V850_CALLT_6_7_OFFSET: |
1228 | insn = bfd_get_16 (abfd, address); | |
1229 | addend += ((insn & 0x3f) << 1); | |
435b1e90 | 1230 | |
252b5132 | 1231 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 1232 | |
252b5132 RH |
1233 | if (saddend > 0x7e || saddend < 0) |
1234 | return bfd_reloc_overflow; | |
435b1e90 | 1235 | |
252b5132 RH |
1236 | if (addend & 1) |
1237 | return bfd_reloc_dangerous; | |
435b1e90 | 1238 | |
252b5132 RH |
1239 | insn &= 0xff80; |
1240 | insn |= (addend >> 1); | |
1241 | break; | |
1242 | ||
1243 | case R_V850_GNU_VTINHERIT: | |
1244 | case R_V850_GNU_VTENTRY: | |
1245 | return bfd_reloc_ok; | |
1246 | ||
1247 | } | |
1248 | ||
1249 | bfd_put_16 (abfd, insn, address); | |
1250 | return bfd_reloc_ok; | |
1251 | } | |
252b5132 RH |
1252 | \f |
1253 | /* Insert the addend into the instruction. */ | |
e12dd2ea | 1254 | |
252b5132 RH |
1255 | static bfd_reloc_status_type |
1256 | v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err) | |
5f771d47 | 1257 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1258 | arelent * reloc; |
1259 | asymbol * symbol; | |
5f771d47 | 1260 | PTR data ATTRIBUTE_UNUSED; |
252b5132 RH |
1261 | asection * isection; |
1262 | bfd * obfd; | |
5f771d47 | 1263 | char ** err ATTRIBUTE_UNUSED; |
252b5132 RH |
1264 | { |
1265 | long relocation; | |
435b1e90 | 1266 | |
252b5132 RH |
1267 | /* If there is an output BFD, |
1268 | and the symbol is not a section name (which is only defined at final link time), | |
1269 | and either we are not putting the addend into the instruction | |
e12dd2ea | 1270 | or the addend is zero, so there is nothing to add into the instruction |
252b5132 RH |
1271 | then just fixup the address and return. */ |
1272 | if (obfd != (bfd *) NULL | |
1273 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1274 | && (! reloc->howto->partial_inplace | |
1275 | || reloc->addend == 0)) | |
1276 | { | |
1277 | reloc->address += isection->output_offset; | |
1278 | return bfd_reloc_ok; | |
1279 | } | |
435b1e90 | 1280 | #if 0 |
252b5132 | 1281 | else if (obfd != NULL) |
e12dd2ea | 1282 | return bfd_reloc_continue; |
252b5132 | 1283 | #endif |
435b1e90 | 1284 | |
252b5132 RH |
1285 | /* Catch relocs involving undefined symbols. */ |
1286 | if (bfd_is_und_section (symbol->section) | |
1287 | && (symbol->flags & BSF_WEAK) == 0 | |
1288 | && obfd == NULL) | |
1289 | return bfd_reloc_undefined; | |
1290 | ||
1291 | /* We handle final linking of some relocs ourselves. */ | |
1292 | ||
1293 | /* Is the address of the relocation really within the section? */ | |
1294 | if (reloc->address > isection->_cooked_size) | |
1295 | return bfd_reloc_outofrange; | |
435b1e90 | 1296 | |
252b5132 RH |
1297 | /* Work out which section the relocation is targetted at and the |
1298 | initial relocation command value. */ | |
435b1e90 | 1299 | |
252b5132 RH |
1300 | /* Get symbol value. (Common symbols are special.) */ |
1301 | if (bfd_is_com_section (symbol->section)) | |
1302 | relocation = 0; | |
1303 | else | |
1304 | relocation = symbol->value; | |
435b1e90 | 1305 | |
252b5132 RH |
1306 | /* Convert input-section-relative symbol value to absolute + addend. */ |
1307 | relocation += symbol->section->output_section->vma; | |
1308 | relocation += symbol->section->output_offset; | |
1309 | relocation += reloc->addend; | |
435b1e90 | 1310 | |
a0f2e916 NC |
1311 | #if 0 /* Since this reloc is going to be processed later on, we should |
1312 | not make it pc-relative here. To test this, try assembling and | |
1313 | linking this program: | |
1314 | ||
1315 | .text | |
1316 | .globl _start | |
1317 | nop | |
1318 | _start: | |
1319 | jr foo | |
1320 | ||
1321 | .section ".foo","ax" | |
1322 | nop | |
1323 | foo: | |
e12dd2ea | 1324 | nop */ |
252b5132 RH |
1325 | if (reloc->howto->pc_relative == true) |
1326 | { | |
1327 | /* Here the variable relocation holds the final address of the | |
1328 | symbol we are relocating against, plus any addend. */ | |
1329 | relocation -= isection->output_section->vma + isection->output_offset; | |
435b1e90 | 1330 | |
e12dd2ea | 1331 | /* Deal with pcrel_offset. */ |
252b5132 RH |
1332 | relocation -= reloc->address; |
1333 | } | |
a0f2e916 | 1334 | #endif |
435b1e90 | 1335 | reloc->addend = relocation; |
252b5132 RH |
1336 | return bfd_reloc_ok; |
1337 | } | |
252b5132 | 1338 | \f |
252b5132 RH |
1339 | static boolean |
1340 | v850_elf_is_local_label_name (abfd, name) | |
5f771d47 | 1341 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1342 | const char * name; |
1343 | { | |
1344 | return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.')) | |
1345 | || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')); | |
1346 | } | |
252b5132 RH |
1347 | \f |
1348 | /* Perform a relocation as part of a final link. */ | |
e12dd2ea | 1349 | |
252b5132 RH |
1350 | static bfd_reloc_status_type |
1351 | v850_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
1352 | input_section, contents, offset, value, | |
1353 | addend, info, sym_sec, is_local) | |
1354 | reloc_howto_type * howto; | |
1355 | bfd * input_bfd; | |
5f771d47 | 1356 | bfd * output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1357 | asection * input_section; |
1358 | bfd_byte * contents; | |
1359 | bfd_vma offset; | |
1360 | bfd_vma value; | |
1361 | bfd_vma addend; | |
1362 | struct bfd_link_info * info; | |
1363 | asection * sym_sec; | |
5f771d47 | 1364 | int is_local ATTRIBUTE_UNUSED; |
252b5132 RH |
1365 | { |
1366 | unsigned long r_type = howto->type; | |
1367 | bfd_byte * hit_data = contents + offset; | |
1368 | ||
1369 | /* Adjust the value according to the relocation. */ | |
1370 | switch (r_type) | |
1371 | { | |
1372 | case R_V850_9_PCREL: | |
1373 | value -= (input_section->output_section->vma | |
1374 | + input_section->output_offset); | |
1375 | value -= offset; | |
1376 | break; | |
435b1e90 | 1377 | |
252b5132 RH |
1378 | case R_V850_22_PCREL: |
1379 | value -= (input_section->output_section->vma | |
1380 | + input_section->output_offset | |
1381 | + offset); | |
1382 | ||
232fb1a3 NC |
1383 | /* If the sign extension will corrupt the value then we have overflowed. */ |
1384 | if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000)) | |
1385 | return bfd_reloc_overflow; | |
435b1e90 | 1386 | |
e12dd2ea NC |
1387 | /* Only the bottom 24 bits of the PC are valid */ |
1388 | value = SEXT24 (value); | |
252b5132 | 1389 | break; |
435b1e90 | 1390 | |
252b5132 RH |
1391 | case R_V850_HI16_S: |
1392 | case R_V850_HI16: | |
1393 | case R_V850_LO16: | |
1394 | case R_V850_16: | |
1395 | case R_V850_32: | |
1396 | case R_V850_8: | |
1397 | break; | |
1398 | ||
435b1e90 | 1399 | case R_V850_ZDA_15_16_OFFSET: |
252b5132 RH |
1400 | case R_V850_ZDA_16_16_OFFSET: |
1401 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
1402 | if (sym_sec == NULL) | |
1403 | return bfd_reloc_undefined; | |
435b1e90 | 1404 | |
252b5132 RH |
1405 | value -= sym_sec->output_section->vma; |
1406 | break; | |
1407 | ||
1408 | case R_V850_SDA_15_16_OFFSET: | |
1409 | case R_V850_SDA_16_16_OFFSET: | |
1410 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
1411 | { | |
1412 | unsigned long gp; | |
1413 | struct bfd_link_hash_entry * h; | |
1414 | ||
1415 | if (sym_sec == NULL) | |
1416 | return bfd_reloc_undefined; | |
435b1e90 | 1417 | |
252b5132 RH |
1418 | /* Get the value of __gp. */ |
1419 | h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true); | |
1420 | if (h == (struct bfd_link_hash_entry *) NULL | |
1421 | || h->type != bfd_link_hash_defined) | |
1422 | return bfd_reloc_other; | |
1423 | ||
1424 | gp = (h->u.def.value | |
1425 | + h->u.def.section->output_section->vma | |
1426 | + h->u.def.section->output_offset); | |
1427 | ||
1428 | value -= sym_sec->output_section->vma; | |
1429 | value -= (gp - sym_sec->output_section->vma); | |
1430 | } | |
1431 | break; | |
1432 | ||
1433 | case R_V850_TDA_4_4_OFFSET: | |
1434 | case R_V850_TDA_4_5_OFFSET: | |
1435 | case R_V850_TDA_16_16_OFFSET: | |
1436 | case R_V850_TDA_7_7_OFFSET: | |
1437 | case R_V850_TDA_7_8_OFFSET: | |
1438 | case R_V850_TDA_6_8_OFFSET: | |
1439 | { | |
1440 | unsigned long ep; | |
1441 | struct bfd_link_hash_entry * h; | |
435b1e90 | 1442 | |
252b5132 RH |
1443 | /* Get the value of __ep. */ |
1444 | h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true); | |
1445 | if (h == (struct bfd_link_hash_entry *) NULL | |
1446 | || h->type != bfd_link_hash_defined) | |
e12dd2ea NC |
1447 | /* Actually this indicates that __ep could not be found. */ |
1448 | return bfd_reloc_continue; | |
252b5132 RH |
1449 | |
1450 | ep = (h->u.def.value | |
1451 | + h->u.def.section->output_section->vma | |
1452 | + h->u.def.section->output_offset); | |
1453 | ||
1454 | value -= ep; | |
1455 | } | |
1456 | break; | |
435b1e90 | 1457 | |
252b5132 RH |
1458 | case R_V850_CALLT_6_7_OFFSET: |
1459 | { | |
1460 | unsigned long ctbp; | |
1461 | struct bfd_link_hash_entry * h; | |
435b1e90 | 1462 | |
252b5132 RH |
1463 | /* Get the value of __ctbp. */ |
1464 | h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); | |
1465 | if (h == (struct bfd_link_hash_entry *) NULL | |
1466 | || h->type != bfd_link_hash_defined) | |
e12dd2ea NC |
1467 | /* Actually this indicates that __ctbp could not be found. */ |
1468 | return bfd_reloc_dangerous + 1; | |
252b5132 RH |
1469 | |
1470 | ctbp = (h->u.def.value | |
1471 | + h->u.def.section->output_section->vma | |
1472 | + h->u.def.section->output_offset); | |
1473 | value -= ctbp; | |
1474 | } | |
1475 | break; | |
435b1e90 | 1476 | |
252b5132 RH |
1477 | case R_V850_CALLT_16_16_OFFSET: |
1478 | { | |
1479 | unsigned long ctbp; | |
1480 | struct bfd_link_hash_entry * h; | |
1481 | ||
1482 | if (sym_sec == NULL) | |
1483 | return bfd_reloc_undefined; | |
435b1e90 | 1484 | |
252b5132 RH |
1485 | /* Get the value of __ctbp. */ |
1486 | h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); | |
1487 | if (h == (struct bfd_link_hash_entry *) NULL | |
1488 | || h->type != bfd_link_hash_defined) | |
1489 | return (bfd_reloc_dangerous + 1); | |
1490 | ||
1491 | ctbp = (h->u.def.value | |
1492 | + h->u.def.section->output_section->vma | |
1493 | + h->u.def.section->output_offset); | |
1494 | ||
1495 | value -= sym_sec->output_section->vma; | |
1496 | value -= (ctbp - sym_sec->output_section->vma); | |
1497 | } | |
1498 | break; | |
435b1e90 | 1499 | |
252b5132 RH |
1500 | case R_V850_NONE: |
1501 | case R_V850_GNU_VTINHERIT: | |
1502 | case R_V850_GNU_VTENTRY: | |
1503 | return bfd_reloc_ok; | |
1504 | ||
1505 | default: | |
1506 | return bfd_reloc_notsupported; | |
1507 | } | |
1508 | ||
1509 | /* Perform the relocation. */ | |
435b1e90 | 1510 | return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data); |
252b5132 | 1511 | } |
252b5132 RH |
1512 | \f |
1513 | /* Relocate an V850 ELF section. */ | |
e12dd2ea | 1514 | |
252b5132 RH |
1515 | static boolean |
1516 | v850_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
1517 | contents, relocs, local_syms, local_sections) | |
1518 | bfd * output_bfd; | |
1519 | struct bfd_link_info * info; | |
1520 | bfd * input_bfd; | |
1521 | asection * input_section; | |
1522 | bfd_byte * contents; | |
1523 | Elf_Internal_Rela * relocs; | |
1524 | Elf_Internal_Sym * local_syms; | |
1525 | asection ** local_sections; | |
1526 | { | |
1527 | Elf_Internal_Shdr * symtab_hdr; | |
1528 | struct elf_link_hash_entry ** sym_hashes; | |
1529 | Elf_Internal_Rela * rel; | |
1530 | Elf_Internal_Rela * relend; | |
1531 | ||
1532 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
1533 | sym_hashes = elf_sym_hashes (input_bfd); | |
1534 | ||
1535 | if (sym_hashes == NULL) | |
1536 | { | |
1537 | info->callbacks->warning | |
1538 | (info, "no hash table available", NULL, input_bfd, input_section, 0); | |
1539 | ||
1540 | return false; | |
1541 | } | |
435b1e90 | 1542 | |
252b5132 RH |
1543 | /* Reset the list of remembered HI16S relocs to empty. */ |
1544 | free_hi16s = previous_hi16s; | |
1545 | previous_hi16s = NULL; | |
1546 | hi16s_counter = 0; | |
435b1e90 | 1547 | |
252b5132 RH |
1548 | rel = relocs; |
1549 | relend = relocs + input_section->reloc_count; | |
1550 | for (; rel < relend; rel++) | |
1551 | { | |
1552 | int r_type; | |
1553 | reloc_howto_type * howto; | |
1554 | unsigned long r_symndx; | |
1555 | Elf_Internal_Sym * sym; | |
1556 | asection * sec; | |
1557 | struct elf_link_hash_entry * h; | |
1558 | bfd_vma relocation; | |
1559 | bfd_reloc_status_type r; | |
1560 | ||
1561 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1562 | r_type = ELF32_R_TYPE (rel->r_info); | |
1563 | ||
1564 | if (r_type == R_V850_GNU_VTENTRY | |
1565 | || r_type == R_V850_GNU_VTINHERIT) | |
1566 | continue; | |
1567 | ||
1568 | howto = v850_elf_howto_table + r_type; | |
1569 | ||
1570 | if (info->relocateable) | |
1571 | { | |
1572 | /* This is a relocateable link. We don't have to change | |
1573 | anything, unless the reloc is against a section symbol, | |
1574 | in which case we have to adjust according to where the | |
1575 | section symbol winds up in the output section. */ | |
1576 | if (r_symndx < symtab_hdr->sh_info) | |
1577 | { | |
1578 | sym = local_syms + r_symndx; | |
1579 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1580 | { | |
1581 | sec = local_sections[r_symndx]; | |
1582 | rel->r_addend += sec->output_offset + sym->st_value; | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | continue; | |
1587 | } | |
1588 | ||
1589 | /* This is a final link. */ | |
1590 | h = NULL; | |
1591 | sym = NULL; | |
1592 | sec = NULL; | |
1593 | if (r_symndx < symtab_hdr->sh_info) | |
1594 | { | |
1595 | sym = local_syms + r_symndx; | |
1596 | sec = local_sections[r_symndx]; | |
1597 | relocation = (sec->output_section->vma | |
1598 | + sec->output_offset | |
1599 | + sym->st_value); | |
1600 | #if 0 | |
1601 | { | |
1602 | char * name; | |
e12dd2ea | 1603 | |
252b5132 RH |
1604 | name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name); |
1605 | name = (name == NULL) ? "<none>" : name; | |
e12dd2ea NC |
1606 | fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", |
1607 | sec->name, name, sym->st_name, | |
1608 | sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend); | |
252b5132 RH |
1609 | } |
1610 | #endif | |
1611 | } | |
1612 | else | |
1613 | { | |
1614 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
435b1e90 | 1615 | |
252b5132 RH |
1616 | while (h->root.type == bfd_link_hash_indirect |
1617 | || h->root.type == bfd_link_hash_warning) | |
1618 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
435b1e90 | 1619 | |
252b5132 RH |
1620 | if (h->root.type == bfd_link_hash_defined |
1621 | || h->root.type == bfd_link_hash_defweak) | |
1622 | { | |
1623 | sec = h->root.u.def.section; | |
1624 | relocation = (h->root.u.def.value | |
1625 | + sec->output_section->vma | |
1626 | + sec->output_offset); | |
1627 | #if 0 | |
e12dd2ea NC |
1628 | fprintf (stderr, "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n", |
1629 | sec->name, h->root.root.string, h->root.u.def.value, sec->output_section->vma, sec->output_offset, relocation); | |
252b5132 RH |
1630 | #endif |
1631 | } | |
1632 | else if (h->root.type == bfd_link_hash_undefweak) | |
1633 | { | |
1634 | #if 0 | |
e12dd2ea NC |
1635 | fprintf (stderr, "undefined: sec: %s, name: %s\n", |
1636 | sec->name, h->root.root.string); | |
252b5132 RH |
1637 | #endif |
1638 | relocation = 0; | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | if (! ((*info->callbacks->undefined_symbol) | |
1643 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1644 | input_section, rel->r_offset, true))) |
252b5132 RH |
1645 | return false; |
1646 | #if 0 | |
e12dd2ea | 1647 | fprintf (stderr, "unknown: name: %s\n", h->root.root.string); |
252b5132 RH |
1648 | #endif |
1649 | relocation = 0; | |
1650 | } | |
1651 | } | |
1652 | ||
e12dd2ea | 1653 | /* FIXME: We should use the addend, but the COFF relocations don't. */ |
252b5132 RH |
1654 | r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1655 | input_section, | |
1656 | contents, rel->r_offset, | |
1657 | relocation, rel->r_addend, | |
1658 | info, sec, h == NULL); | |
1659 | ||
1660 | if (r != bfd_reloc_ok) | |
1661 | { | |
1662 | const char * name; | |
1663 | const char * msg = (const char *)0; | |
1664 | ||
1665 | if (h != NULL) | |
1666 | name = h->root.root.string; | |
1667 | else | |
1668 | { | |
1669 | name = (bfd_elf_string_from_elf_section | |
1670 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1671 | if (name == NULL || *name == '\0') | |
1672 | name = bfd_section_name (input_bfd, sec); | |
1673 | } | |
1674 | ||
1675 | switch (r) | |
1676 | { | |
1677 | case bfd_reloc_overflow: | |
1678 | if (! ((*info->callbacks->reloc_overflow) | |
1679 | (info, name, howto->name, (bfd_vma) 0, | |
1680 | input_bfd, input_section, rel->r_offset))) | |
1681 | return false; | |
1682 | break; | |
1683 | ||
1684 | case bfd_reloc_undefined: | |
1685 | if (! ((*info->callbacks->undefined_symbol) | |
1686 | (info, name, input_bfd, input_section, | |
5cc7c785 | 1687 | rel->r_offset, true))) |
252b5132 RH |
1688 | return false; |
1689 | break; | |
1690 | ||
1691 | case bfd_reloc_outofrange: | |
1692 | msg = _("internal error: out of range error"); | |
1693 | goto common_error; | |
1694 | ||
1695 | case bfd_reloc_notsupported: | |
1696 | msg = _("internal error: unsupported relocation error"); | |
1697 | goto common_error; | |
1698 | ||
1699 | case bfd_reloc_dangerous: | |
1700 | msg = _("internal error: dangerous relocation"); | |
1701 | goto common_error; | |
1702 | ||
1703 | case bfd_reloc_other: | |
1704 | msg = _("could not locate special linker symbol __gp"); | |
1705 | goto common_error; | |
1706 | ||
1707 | case bfd_reloc_continue: | |
1708 | msg = _("could not locate special linker symbol __ep"); | |
1709 | goto common_error; | |
1710 | ||
1711 | case (bfd_reloc_dangerous + 1): | |
1712 | msg = _("could not locate special linker symbol __ctbp"); | |
1713 | goto common_error; | |
435b1e90 | 1714 | |
252b5132 RH |
1715 | default: |
1716 | msg = _("internal error: unknown error"); | |
1717 | /* fall through */ | |
1718 | ||
1719 | common_error: | |
1720 | if (!((*info->callbacks->warning) | |
1721 | (info, msg, name, input_bfd, input_section, | |
1722 | rel->r_offset))) | |
1723 | return false; | |
1724 | break; | |
1725 | } | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | return true; | |
1730 | } | |
1731 | ||
1732 | static boolean | |
1733 | v850_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
5f771d47 ILT |
1734 | bfd *abfd ATTRIBUTE_UNUSED; |
1735 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1736 | asection *sec ATTRIBUTE_UNUSED; | |
1737 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
252b5132 | 1738 | { |
e12dd2ea | 1739 | /* No got and plt entries for v850-elf. */ |
252b5132 RH |
1740 | return true; |
1741 | } | |
1742 | ||
1743 | static asection * | |
1744 | v850_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
1745 | bfd *abfd; | |
5f771d47 | 1746 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1747 | Elf_Internal_Rela *rel; |
1748 | struct elf_link_hash_entry *h; | |
1749 | Elf_Internal_Sym *sym; | |
1750 | { | |
1751 | if (h != NULL) | |
1752 | { | |
1753 | switch (ELF32_R_TYPE (rel->r_info)) | |
1754 | { | |
1755 | case R_V850_GNU_VTINHERIT: | |
1756 | case R_V850_GNU_VTENTRY: | |
1757 | break; | |
1758 | ||
1759 | default: | |
1760 | switch (h->root.type) | |
1761 | { | |
1762 | case bfd_link_hash_defined: | |
1763 | case bfd_link_hash_defweak: | |
1764 | return h->root.u.def.section; | |
1765 | ||
1766 | case bfd_link_hash_common: | |
1767 | return h->root.u.c.p->section; | |
e049a0de ILT |
1768 | |
1769 | default: | |
1770 | break; | |
252b5132 RH |
1771 | } |
1772 | } | |
1773 | } | |
1774 | else | |
1775 | { | |
1776 | if (!(elf_bad_symtab (abfd) | |
1777 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
1778 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
1779 | && sym->st_shndx != SHN_COMMON)) | |
1780 | { | |
1781 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
1782 | } | |
1783 | } | |
1784 | return NULL; | |
1785 | } | |
e12dd2ea | 1786 | |
252b5132 | 1787 | /* Set the right machine number. */ |
e12dd2ea | 1788 | |
252b5132 RH |
1789 | static boolean |
1790 | v850_elf_object_p (abfd) | |
1791 | bfd *abfd; | |
1792 | { | |
1793 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) | |
1794 | { | |
1795 | default: | |
1796 | case E_V850_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, 0); break; | |
1797 | case E_V850E_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); break; | |
1798 | case E_V850EA_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850ea); break; | |
1799 | } | |
1800 | return true; | |
1801 | } | |
1802 | ||
1803 | /* Store the machine number in the flags field. */ | |
e12dd2ea | 1804 | |
252b5132 RH |
1805 | static void |
1806 | v850_elf_final_write_processing (abfd, linker) | |
1807 | bfd * abfd; | |
5f771d47 | 1808 | boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
1809 | { |
1810 | unsigned long val; | |
1811 | ||
1812 | switch (bfd_get_mach (abfd)) | |
1813 | { | |
1814 | default: | |
1815 | case 0: val = E_V850_ARCH; break; | |
1816 | case bfd_mach_v850e: val = E_V850E_ARCH; break; | |
1817 | case bfd_mach_v850ea: val = E_V850EA_ARCH; break; | |
1818 | } | |
1819 | ||
1820 | elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH; | |
1821 | elf_elfheader (abfd)->e_flags |= val; | |
1822 | } | |
1823 | ||
435b1e90 | 1824 | /* Function to keep V850 specific file flags. */ |
e12dd2ea | 1825 | |
252b5132 RH |
1826 | static boolean |
1827 | v850_elf_set_private_flags (abfd, flags) | |
1828 | bfd * abfd; | |
1829 | flagword flags; | |
1830 | { | |
1831 | BFD_ASSERT (!elf_flags_init (abfd) | |
1832 | || elf_elfheader (abfd)->e_flags == flags); | |
1833 | ||
1834 | elf_elfheader (abfd)->e_flags = flags; | |
1835 | elf_flags_init (abfd) = true; | |
1836 | return true; | |
1837 | } | |
1838 | ||
e12dd2ea NC |
1839 | /* Copy backend specific data from one object module to another. */ |
1840 | ||
252b5132 RH |
1841 | static boolean |
1842 | v850_elf_copy_private_bfd_data (ibfd, obfd) | |
1843 | bfd * ibfd; | |
1844 | bfd * obfd; | |
1845 | { | |
1846 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1847 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1848 | return true; | |
1849 | ||
1850 | BFD_ASSERT (!elf_flags_init (obfd) | |
1851 | || (elf_elfheader (obfd)->e_flags | |
1852 | == elf_elfheader (ibfd)->e_flags)); | |
1853 | ||
1854 | elf_gp (obfd) = elf_gp (ibfd); | |
1855 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
1856 | elf_flags_init (obfd) = true; | |
e12dd2ea | 1857 | |
252b5132 RH |
1858 | return true; |
1859 | } | |
1860 | ||
e12dd2ea NC |
1861 | /* Merge backend specific data from an object file |
1862 | to the output object file when linking. */ | |
252b5132 RH |
1863 | static boolean |
1864 | v850_elf_merge_private_bfd_data (ibfd, obfd) | |
1865 | bfd * ibfd; | |
1866 | bfd * obfd; | |
1867 | { | |
1868 | flagword out_flags; | |
1869 | flagword in_flags; | |
1870 | ||
1871 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1872 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1873 | return true; | |
1874 | ||
1875 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1876 | out_flags = elf_elfheader (obfd)->e_flags; | |
1877 | ||
1878 | if (! elf_flags_init (obfd)) | |
1879 | { | |
1880 | /* If the input is the default architecture then do not | |
1881 | bother setting the flags for the output architecture, | |
1882 | instead allow future merges to do this. If no future | |
1883 | merges ever set these flags then they will retain their | |
1884 | unitialised values, which surprise surprise, correspond | |
1885 | to the default values. */ | |
1886 | if (bfd_get_arch_info (ibfd)->the_default) | |
1887 | return true; | |
435b1e90 | 1888 | |
252b5132 RH |
1889 | elf_flags_init (obfd) = true; |
1890 | elf_elfheader (obfd)->e_flags = in_flags; | |
1891 | ||
1892 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1893 | && bfd_get_arch_info (obfd)->the_default) | |
e12dd2ea | 1894 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); |
252b5132 RH |
1895 | |
1896 | return true; | |
1897 | } | |
1898 | ||
1899 | /* Check flag compatibility. */ | |
1900 | if (in_flags == out_flags) | |
1901 | return true; | |
1902 | ||
1903 | if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH) | |
1904 | && (in_flags & EF_V850_ARCH) != E_V850_ARCH) | |
1905 | _bfd_error_handler (_("%s: Architecture mismatch with previous modules"), | |
1906 | bfd_get_filename (ibfd)); | |
1907 | ||
1908 | return true; | |
1909 | } | |
e12dd2ea NC |
1910 | |
1911 | /* Display the flags field. */ | |
252b5132 RH |
1912 | |
1913 | static boolean | |
1914 | v850_elf_print_private_bfd_data (abfd, ptr) | |
1915 | bfd * abfd; | |
1916 | PTR ptr; | |
1917 | { | |
1918 | FILE * file = (FILE *) ptr; | |
435b1e90 | 1919 | |
252b5132 | 1920 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
435b1e90 | 1921 | |
252b5132 | 1922 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
435b1e90 | 1923 | |
252b5132 RH |
1924 | /* xgettext:c-format */ |
1925 | fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags); | |
435b1e90 | 1926 | |
252b5132 RH |
1927 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) |
1928 | { | |
1929 | default: | |
1930 | case E_V850_ARCH: fprintf (file, _("v850 architecture")); break; | |
1931 | case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break; | |
1932 | case E_V850EA_ARCH: fprintf (file, _("v850ea architecture")); break; | |
1933 | } | |
435b1e90 | 1934 | |
252b5132 | 1935 | fputc ('\n', file); |
435b1e90 | 1936 | |
252b5132 RH |
1937 | return true; |
1938 | } | |
1939 | ||
1940 | /* V850 ELF uses four common sections. One is the usual one, and the | |
1941 | others are for (small) objects in one of the special data areas: | |
1942 | small, tiny and zero. All the objects are kept together, and then | |
1943 | referenced via the gp register, the ep register or the r0 register | |
1944 | respectively, which yields smaller, faster assembler code. This | |
1945 | approach is copied from elf32-mips.c. */ | |
1946 | ||
1947 | static asection v850_elf_scom_section; | |
1948 | static asymbol v850_elf_scom_symbol; | |
1949 | static asymbol * v850_elf_scom_symbol_ptr; | |
1950 | static asection v850_elf_tcom_section; | |
1951 | static asymbol v850_elf_tcom_symbol; | |
1952 | static asymbol * v850_elf_tcom_symbol_ptr; | |
1953 | static asection v850_elf_zcom_section; | |
1954 | static asymbol v850_elf_zcom_symbol; | |
1955 | static asymbol * v850_elf_zcom_symbol_ptr; | |
1956 | ||
e12dd2ea NC |
1957 | /* Given a BFD section, try to locate the |
1958 | corresponding ELF section index. */ | |
252b5132 RH |
1959 | |
1960 | static boolean | |
1961 | v850_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
5f771d47 ILT |
1962 | bfd * abfd ATTRIBUTE_UNUSED; |
1963 | Elf32_Internal_Shdr * hdr ATTRIBUTE_UNUSED; | |
252b5132 RH |
1964 | asection * sec; |
1965 | int * retval; | |
1966 | { | |
1967 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
1968 | *retval = SHN_V850_SCOMMON; | |
1969 | else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0) | |
1970 | *retval = SHN_V850_TCOMMON; | |
1971 | else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0) | |
1972 | *retval = SHN_V850_ZCOMMON; | |
1973 | else | |
1974 | return false; | |
435b1e90 | 1975 | |
252b5132 RH |
1976 | return true; |
1977 | } | |
1978 | ||
1979 | /* Handle the special V850 section numbers that a symbol may use. */ | |
1980 | ||
1981 | static void | |
1982 | v850_elf_symbol_processing (abfd, asym) | |
1983 | bfd * abfd; | |
1984 | asymbol * asym; | |
1985 | { | |
1986 | elf_symbol_type * elfsym = (elf_symbol_type *) asym; | |
1987 | unsigned short index; | |
435b1e90 | 1988 | |
252b5132 RH |
1989 | index = elfsym->internal_elf_sym.st_shndx; |
1990 | ||
1991 | /* If the section index is an "ordinary" index, then it may | |
1992 | refer to a v850 specific section created by the assembler. | |
1993 | Check the section's type and change the index it matches. | |
435b1e90 | 1994 | |
252b5132 | 1995 | FIXME: Should we alter the st_shndx field as well ? */ |
435b1e90 | 1996 | |
252b5132 RH |
1997 | if (index < elf_elfheader(abfd)[0].e_shnum) |
1998 | switch (elf_elfsections(abfd)[index]->sh_type) | |
1999 | { | |
2000 | case SHT_V850_SCOMMON: | |
2001 | index = SHN_V850_SCOMMON; | |
2002 | break; | |
435b1e90 | 2003 | |
252b5132 RH |
2004 | case SHT_V850_TCOMMON: |
2005 | index = SHN_V850_TCOMMON; | |
2006 | break; | |
435b1e90 | 2007 | |
252b5132 RH |
2008 | case SHT_V850_ZCOMMON: |
2009 | index = SHN_V850_ZCOMMON; | |
2010 | break; | |
435b1e90 | 2011 | |
252b5132 RH |
2012 | default: |
2013 | break; | |
2014 | } | |
435b1e90 | 2015 | |
252b5132 RH |
2016 | switch (index) |
2017 | { | |
2018 | case SHN_V850_SCOMMON: | |
2019 | if (v850_elf_scom_section.name == NULL) | |
2020 | { | |
2021 | /* Initialize the small common section. */ | |
2022 | v850_elf_scom_section.name = ".scommon"; | |
2023 | v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA; | |
2024 | v850_elf_scom_section.output_section = & v850_elf_scom_section; | |
2025 | v850_elf_scom_section.symbol = & v850_elf_scom_symbol; | |
2026 | v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr; | |
2027 | v850_elf_scom_symbol.name = ".scommon"; | |
2028 | v850_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
2029 | v850_elf_scom_symbol.section = & v850_elf_scom_section; | |
2030 | v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol; | |
2031 | } | |
2032 | asym->section = & v850_elf_scom_section; | |
2033 | asym->value = elfsym->internal_elf_sym.st_size; | |
2034 | break; | |
435b1e90 | 2035 | |
252b5132 RH |
2036 | case SHN_V850_TCOMMON: |
2037 | if (v850_elf_tcom_section.name == NULL) | |
2038 | { | |
2039 | /* Initialize the tcommon section. */ | |
2040 | v850_elf_tcom_section.name = ".tcommon"; | |
2041 | v850_elf_tcom_section.flags = SEC_IS_COMMON; | |
2042 | v850_elf_tcom_section.output_section = & v850_elf_tcom_section; | |
2043 | v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol; | |
2044 | v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr; | |
2045 | v850_elf_tcom_symbol.name = ".tcommon"; | |
2046 | v850_elf_tcom_symbol.flags = BSF_SECTION_SYM; | |
2047 | v850_elf_tcom_symbol.section = & v850_elf_tcom_section; | |
2048 | v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol; | |
2049 | } | |
2050 | asym->section = & v850_elf_tcom_section; | |
2051 | asym->value = elfsym->internal_elf_sym.st_size; | |
2052 | break; | |
2053 | ||
2054 | case SHN_V850_ZCOMMON: | |
2055 | if (v850_elf_zcom_section.name == NULL) | |
2056 | { | |
2057 | /* Initialize the zcommon section. */ | |
2058 | v850_elf_zcom_section.name = ".zcommon"; | |
2059 | v850_elf_zcom_section.flags = SEC_IS_COMMON; | |
2060 | v850_elf_zcom_section.output_section = & v850_elf_zcom_section; | |
2061 | v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol; | |
2062 | v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr; | |
2063 | v850_elf_zcom_symbol.name = ".zcommon"; | |
2064 | v850_elf_zcom_symbol.flags = BSF_SECTION_SYM; | |
2065 | v850_elf_zcom_symbol.section = & v850_elf_zcom_section; | |
2066 | v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol; | |
2067 | } | |
2068 | asym->section = & v850_elf_zcom_section; | |
2069 | asym->value = elfsym->internal_elf_sym.st_size; | |
2070 | break; | |
2071 | } | |
2072 | } | |
2073 | ||
2074 | /* Hook called by the linker routine which adds symbols from an object | |
2075 | file. We must handle the special v850 section numbers here. */ | |
2076 | ||
252b5132 RH |
2077 | static boolean |
2078 | v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
2079 | bfd * abfd; | |
5f771d47 | 2080 | struct bfd_link_info * info ATTRIBUTE_UNUSED; |
252b5132 | 2081 | const Elf_Internal_Sym * sym; |
5f771d47 ILT |
2082 | const char ** namep ATTRIBUTE_UNUSED; |
2083 | flagword * flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
2084 | asection ** secp; |
2085 | bfd_vma * valp; | |
2086 | { | |
2087 | int index = sym->st_shndx; | |
435b1e90 | 2088 | |
252b5132 RH |
2089 | /* If the section index is an "ordinary" index, then it may |
2090 | refer to a v850 specific section created by the assembler. | |
2091 | Check the section's type and change the index it matches. | |
435b1e90 | 2092 | |
252b5132 | 2093 | FIXME: Should we alter the st_shndx field as well ? */ |
435b1e90 | 2094 | |
252b5132 RH |
2095 | if (index < elf_elfheader(abfd)[0].e_shnum) |
2096 | switch (elf_elfsections(abfd)[index]->sh_type) | |
2097 | { | |
2098 | case SHT_V850_SCOMMON: | |
2099 | index = SHN_V850_SCOMMON; | |
2100 | break; | |
435b1e90 | 2101 | |
252b5132 RH |
2102 | case SHT_V850_TCOMMON: |
2103 | index = SHN_V850_TCOMMON; | |
2104 | break; | |
435b1e90 | 2105 | |
252b5132 RH |
2106 | case SHT_V850_ZCOMMON: |
2107 | index = SHN_V850_ZCOMMON; | |
2108 | break; | |
435b1e90 | 2109 | |
252b5132 RH |
2110 | default: |
2111 | break; | |
2112 | } | |
435b1e90 | 2113 | |
252b5132 RH |
2114 | switch (index) |
2115 | { | |
2116 | case SHN_V850_SCOMMON: | |
2117 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
2118 | (*secp)->flags |= SEC_IS_COMMON; | |
2119 | *valp = sym->st_size; | |
2120 | break; | |
435b1e90 | 2121 | |
252b5132 RH |
2122 | case SHN_V850_TCOMMON: |
2123 | *secp = bfd_make_section_old_way (abfd, ".tcommon"); | |
2124 | (*secp)->flags |= SEC_IS_COMMON; | |
2125 | *valp = sym->st_size; | |
2126 | break; | |
435b1e90 | 2127 | |
252b5132 RH |
2128 | case SHN_V850_ZCOMMON: |
2129 | *secp = bfd_make_section_old_way (abfd, ".zcommon"); | |
2130 | (*secp)->flags |= SEC_IS_COMMON; | |
2131 | *valp = sym->st_size; | |
2132 | break; | |
2133 | } | |
2134 | ||
2135 | return true; | |
2136 | } | |
2137 | ||
252b5132 RH |
2138 | static boolean |
2139 | v850_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
5f771d47 ILT |
2140 | bfd * abfd ATTRIBUTE_UNUSED; |
2141 | struct bfd_link_info * info ATTRIBUTE_UNUSED; | |
2142 | const char * name ATTRIBUTE_UNUSED; | |
252b5132 RH |
2143 | Elf_Internal_Sym * sym; |
2144 | asection * input_sec; | |
2145 | { | |
2146 | /* If we see a common symbol, which implies a relocatable link, then | |
2147 | if a symbol was in a special common section in an input file, mark | |
2148 | it as a special common in the output file. */ | |
435b1e90 | 2149 | |
252b5132 RH |
2150 | if (sym->st_shndx == SHN_COMMON) |
2151 | { | |
2152 | if (strcmp (input_sec->name, ".scommon") == 0) | |
2153 | sym->st_shndx = SHN_V850_SCOMMON; | |
2154 | else if (strcmp (input_sec->name, ".tcommon") == 0) | |
2155 | sym->st_shndx = SHN_V850_TCOMMON; | |
2156 | else if (strcmp (input_sec->name, ".zcommon") == 0) | |
2157 | sym->st_shndx = SHN_V850_ZCOMMON; | |
2158 | } | |
2159 | ||
2160 | return true; | |
2161 | } | |
2162 | ||
2163 | static boolean | |
2164 | v850_elf_section_from_shdr (abfd, hdr, name) | |
2165 | bfd * abfd; | |
2166 | Elf_Internal_Shdr * hdr; | |
2167 | char * name; | |
2168 | { | |
2169 | /* There ought to be a place to keep ELF backend specific flags, but | |
2170 | at the moment there isn't one. We just keep track of the | |
2171 | sections by their name, instead. */ | |
2172 | ||
2173 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
2174 | return false; | |
2175 | ||
2176 | switch (hdr->sh_type) | |
2177 | { | |
2178 | case SHT_V850_SCOMMON: | |
2179 | case SHT_V850_TCOMMON: | |
2180 | case SHT_V850_ZCOMMON: | |
2181 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
2182 | (bfd_get_section_flags (abfd, | |
2183 | hdr->bfd_section) | |
2184 | | SEC_IS_COMMON))) | |
2185 | return false; | |
2186 | } | |
2187 | ||
2188 | return true; | |
2189 | } | |
2190 | ||
e12dd2ea NC |
2191 | /* Set the correct type for a V850 ELF section. We do this |
2192 | by the section name, which is a hack, but ought to work. */ | |
2193 | ||
252b5132 RH |
2194 | static boolean |
2195 | v850_elf_fake_sections (abfd, hdr, sec) | |
5f771d47 | 2196 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2197 | Elf32_Internal_Shdr * hdr; |
2198 | asection * sec; | |
2199 | { | |
2200 | register const char * name; | |
2201 | ||
2202 | name = bfd_get_section_name (abfd, sec); | |
2203 | ||
2204 | if (strcmp (name, ".scommon") == 0) | |
2205 | { | |
2206 | hdr->sh_type = SHT_V850_SCOMMON; | |
2207 | } | |
2208 | else if (strcmp (name, ".tcommon") == 0) | |
2209 | { | |
2210 | hdr->sh_type = SHT_V850_TCOMMON; | |
2211 | } | |
2212 | else if (strcmp (name, ".zcommon") == 0) | |
2213 | hdr->sh_type = SHT_V850_ZCOMMON; | |
435b1e90 | 2214 | |
252b5132 RH |
2215 | return true; |
2216 | } | |
252b5132 RH |
2217 | \f |
2218 | #define TARGET_LITTLE_SYM bfd_elf32_v850_vec | |
2219 | #define TARGET_LITTLE_NAME "elf32-v850" | |
2220 | #define ELF_ARCH bfd_arch_v850 | |
2221 | #define ELF_MACHINE_CODE EM_CYGNUS_V850 | |
2222 | #define ELF_MAXPAGESIZE 0x1000 | |
435b1e90 | 2223 | |
252b5132 RH |
2224 | #define elf_info_to_howto v850_elf_info_to_howto_rela |
2225 | #define elf_info_to_howto_rel v850_elf_info_to_howto_rel | |
2226 | ||
2227 | #define elf_backend_check_relocs v850_elf_check_relocs | |
2228 | #define elf_backend_relocate_section v850_elf_relocate_section | |
2229 | #define elf_backend_object_p v850_elf_object_p | |
2230 | #define elf_backend_final_write_processing v850_elf_final_write_processing | |
2231 | #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section | |
2232 | #define elf_backend_symbol_processing v850_elf_symbol_processing | |
2233 | #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook | |
2234 | #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook | |
2235 | #define elf_backend_section_from_shdr v850_elf_section_from_shdr | |
2236 | #define elf_backend_fake_sections v850_elf_fake_sections | |
2237 | #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook | |
2238 | #define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook | |
2239 | ||
2240 | #define elf_backend_can_gc_sections 1 | |
2241 | ||
252b5132 RH |
2242 | #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name |
2243 | #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup | |
2244 | #define bfd_elf32_bfd_copy_private_bfd_data v850_elf_copy_private_bfd_data | |
2245 | #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data | |
2246 | #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags | |
2247 | #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data | |
2248 | ||
2249 | #define elf_symbol_leading_char '_' | |
2250 | ||
2251 | #include "elf32-target.h" |