Commit | Line | Data |
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01b49cb3 | 1 | /* V850-specific support for 32-bit ELF |
75172c0f | 2 | Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. |
01b49cb3 C |
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 | ||
90ffe48b JL |
20 | |
21 | ||
22 | /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char | |
23 | dependencies. As is the gas & simulator code or the v850. */ | |
24 | ||
25 | ||
01b49cb3 C |
26 | #include "bfd.h" |
27 | #include "sysdep.h" | |
725b96f5 | 28 | #include "bfdlink.h" |
01b49cb3 C |
29 | #include "libbfd.h" |
30 | #include "elf-bfd.h" | |
de224d6a | 31 | #include "elf/v850.h" |
01b49cb3 | 32 | |
22a9f052 NC |
33 | /* sign-extend a 24-bit number */ |
34 | #define SEXT24(x) ((((x) & 0xffffff) ^ (~ 0x7fffff)) + 0x800000) | |
35 | ||
de224d6a | 36 | static reloc_howto_type *v850_elf_reloc_type_lookup |
01b49cb3 | 37 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
de224d6a | 38 | static void v850_elf_info_to_howto_rel |
01b49cb3 | 39 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); |
de224d6a | 40 | static bfd_reloc_status_type v850_elf_reloc |
e73b6ae6 | 41 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
8988d935 | 42 | static boolean v850_elf_is_local_label_name PARAMS ((bfd *, const char *)); |
de224d6a MM |
43 | static boolean v850_elf_relocate_section PARAMS((bfd *, |
44 | struct bfd_link_info *, | |
45 | bfd *, | |
46 | asection *, | |
47 | bfd_byte *, | |
48 | Elf_Internal_Rela *, | |
49 | Elf_Internal_Sym *, | |
50 | asection **)); | |
01b49cb3 C |
51 | /* Try to minimize the amount of space occupied by relocation tables |
52 | on the ROM (not that the ROM won't be swamped by other ELF overhead). */ | |
53 | #define USE_REL | |
54 | ||
def31039 NC |
55 | /* Note: It is REQUIRED that the 'type' value of each entry in this array |
56 | match the index of the entry in the array. */ | |
de224d6a | 57 | static reloc_howto_type v850_elf_howto_table[] = |
01b49cb3 C |
58 | { |
59 | /* This reloc does nothing. */ | |
de224d6a MM |
60 | HOWTO (R_V850_NONE, /* type */ |
61 | 0, /* rightshift */ | |
62 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
63 | 32, /* bitsize */ | |
64 | false, /* pc_relative */ | |
65 | 0, /* bitpos */ | |
66 | complain_overflow_bitfield, /* complain_on_overflow */ | |
67 | bfd_elf_generic_reloc, /* special_function */ | |
68 | "R_V850_NONE", /* name */ | |
69 | false, /* partial_inplace */ | |
70 | 0, /* src_mask */ | |
71 | 0, /* dst_mask */ | |
72 | false), /* pcrel_offset */ | |
01b49cb3 C |
73 | |
74 | /* A PC relative 9 bit branch. */ | |
de224d6a MM |
75 | HOWTO (R_V850_9_PCREL, /* type */ |
76 | 2, /* rightshift */ | |
77 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
78 | 26, /* bitsize */ | |
79 | true, /* pc_relative */ | |
80 | 0, /* bitpos */ | |
81 | complain_overflow_bitfield, /* complain_on_overflow */ | |
82 | v850_elf_reloc, /* special_function */ | |
83 | "R_V850_9_PCREL", /* name */ | |
84 | false, /* partial_inplace */ | |
85 | 0x00ffffff, /* src_mask */ | |
86 | 0x00ffffff, /* dst_mask */ | |
87 | true), /* pcrel_offset */ | |
01b49cb3 C |
88 | |
89 | /* A PC relative 22 bit branch. */ | |
de224d6a MM |
90 | HOWTO (R_V850_22_PCREL, /* type */ |
91 | 2, /* rightshift */ | |
92 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
93 | 22, /* bitsize */ | |
94 | true, /* pc_relative */ | |
95 | 7, /* bitpos */ | |
96 | complain_overflow_signed, /* complain_on_overflow */ | |
97 | v850_elf_reloc, /* special_function */ | |
98 | "R_V850_22_PCREL", /* name */ | |
99 | false, /* partial_inplace */ | |
100 | 0x07ffff80, /* src_mask */ | |
101 | 0x07ffff80, /* dst_mask */ | |
102 | true), /* pcrel_offset */ | |
01b49cb3 C |
103 | |
104 | /* High 16 bits of symbol value. */ | |
de224d6a MM |
105 | HOWTO (R_V850_HI16_S, /* type */ |
106 | 0, /* rightshift */ | |
107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
108 | 16, /* bitsize */ | |
109 | false, /* pc_relative */ | |
110 | 0, /* bitpos */ | |
111 | complain_overflow_dont, /* complain_on_overflow */ | |
112 | v850_elf_reloc, /* special_function */ | |
113 | "R_V850_HI16_S", /* name */ | |
114 | true, /* partial_inplace */ | |
115 | 0xffff, /* src_mask */ | |
116 | 0xffff, /* dst_mask */ | |
117 | false), /* pcrel_offset */ | |
01b49cb3 C |
118 | |
119 | /* High 16 bits of symbol value. */ | |
de224d6a MM |
120 | HOWTO (R_V850_HI16, /* type */ |
121 | 0, /* rightshift */ | |
122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
123 | 16, /* bitsize */ | |
124 | false, /* pc_relative */ | |
125 | 0, /* bitpos */ | |
126 | complain_overflow_dont, /* complain_on_overflow */ | |
127 | v850_elf_reloc, /* special_function */ | |
128 | "R_V850_HI16", /* name */ | |
129 | true, /* partial_inplace */ | |
130 | 0xffff, /* src_mask */ | |
131 | 0xffff, /* dst_mask */ | |
132 | false), /* pcrel_offset */ | |
01b49cb3 C |
133 | |
134 | /* Low 16 bits of symbol value. */ | |
de224d6a MM |
135 | HOWTO (R_V850_LO16, /* type */ |
136 | 0, /* rightshift */ | |
137 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
138 | 16, /* bitsize */ | |
139 | false, /* pc_relative */ | |
140 | 0, /* bitpos */ | |
141 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 142 | v850_elf_reloc, /* special_function */ |
de224d6a MM |
143 | "R_V850_LO16", /* name */ |
144 | true, /* partial_inplace */ | |
145 | 0xffff, /* src_mask */ | |
146 | 0xffff, /* dst_mask */ | |
147 | false), /* pcrel_offset */ | |
237b5c4c JL |
148 | |
149 | /* Simple 32bit reloc. */ | |
de224d6a MM |
150 | HOWTO (R_V850_32, /* type */ |
151 | 0, /* rightshift */ | |
152 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
153 | 32, /* bitsize */ | |
154 | false, /* pc_relative */ | |
155 | 0, /* bitpos */ | |
156 | complain_overflow_dont, /* complain_on_overflow */ | |
22a9f052 | 157 | v850_elf_reloc, /* special_function */ |
de224d6a MM |
158 | "R_V850_32", /* name */ |
159 | true, /* partial_inplace */ | |
160 | 0xffffffff, /* src_mask */ | |
161 | 0xffffffff, /* dst_mask */ | |
162 | false), /* pcrel_offset */ | |
237b5c4c JL |
163 | |
164 | /* Simple 16bit reloc. */ | |
de224d6a MM |
165 | HOWTO (R_V850_16, /* type */ |
166 | 0, /* rightshift */ | |
167 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
168 | 16, /* bitsize */ | |
169 | false, /* pc_relative */ | |
170 | 0, /* bitpos */ | |
171 | complain_overflow_dont, /* complain_on_overflow */ | |
172 | bfd_elf_generic_reloc, /* special_function */ | |
173 | "R_V850_16", /* name */ | |
174 | true, /* partial_inplace */ | |
175 | 0xffff, /* src_mask */ | |
176 | 0xffff, /* dst_mask */ | |
177 | false), /* pcrel_offset */ | |
afaed5e9 MM |
178 | |
179 | /* Simple 8bit reloc. */ | |
de224d6a MM |
180 | HOWTO (R_V850_8, /* type */ |
181 | 0, /* rightshift */ | |
182 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
183 | 8, /* bitsize */ | |
184 | false, /* pc_relative */ | |
185 | 0, /* bitpos */ | |
186 | complain_overflow_dont, /* complain_on_overflow */ | |
187 | bfd_elf_generic_reloc, /* special_function */ | |
188 | "R_V850_8", /* name */ | |
189 | true, /* partial_inplace */ | |
190 | 0xff, /* src_mask */ | |
191 | 0xff, /* dst_mask */ | |
192 | false), /* pcrel_offset */ | |
b6d08fce | 193 | |
def31039 NC |
194 | /* 16 bit offset from the short data area pointer. */ |
195 | HOWTO (R_V850_SDA_16_16_OFFSET, /* type */ | |
de224d6a MM |
196 | 0, /* rightshift */ |
197 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
198 | 16, /* bitsize */ | |
199 | false, /* pc_relative */ | |
200 | 0, /* bitpos */ | |
201 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 202 | v850_elf_reloc, /* special_function */ |
def31039 NC |
203 | "R_V850_SDA_16_16_OFFSET", /* name */ |
204 | false, /* partial_inplace */ | |
de224d6a MM |
205 | 0xffff, /* src_mask */ |
206 | 0xffff, /* dst_mask */ | |
207 | false), /* pcrel_offset */ | |
b6d08fce | 208 | |
def31039 NC |
209 | /* 15 bit offset from the short data area pointer. */ |
210 | HOWTO (R_V850_SDA_15_16_OFFSET, /* type */ | |
211 | 1, /* rightshift */ | |
212 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 16, /* bitsize */ | |
214 | false, /* pc_relative */ | |
215 | 1, /* bitpos */ | |
216 | complain_overflow_dont, /* complain_on_overflow */ | |
217 | v850_elf_reloc, /* special_function */ | |
218 | "R_V850_SDA_15_16_OFFSET", /* name */ | |
219 | false, /* partial_inplace */ | |
220 | 0xfffe, /* src_mask */ | |
221 | 0xfffe, /* dst_mask */ | |
222 | false), /* pcrel_offset */ | |
223 | ||
224 | /* 16 bit offset from the zero data area pointer. */ | |
225 | HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */ | |
de224d6a MM |
226 | 0, /* rightshift */ |
227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 16, /* bitsize */ | |
229 | false, /* pc_relative */ | |
230 | 0, /* bitpos */ | |
231 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 232 | v850_elf_reloc, /* special_function */ |
def31039 NC |
233 | "R_V850_ZDA_16_16_OFFSET", /* name */ |
234 | false, /* partial_inplace */ | |
de224d6a MM |
235 | 0xffff, /* src_mask */ |
236 | 0xffff, /* dst_mask */ | |
237 | false), /* pcrel_offset */ | |
b6d08fce | 238 | |
def31039 NC |
239 | /* 15 bit offset from the zero data area pointer. */ |
240 | HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */ | |
241 | 1, /* rightshift */ | |
242 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
243 | 16, /* bitsize */ | |
244 | false, /* pc_relative */ | |
245 | 1, /* bitpos */ | |
246 | complain_overflow_dont, /* complain_on_overflow */ | |
247 | v850_elf_reloc, /* special_function */ | |
248 | "R_V850_ZDA_15_16_OFFSET", /* name */ | |
249 | false, /* partial_inplace */ | |
250 | 0xfffe, /* src_mask */ | |
251 | 0xfffe, /* dst_mask */ | |
252 | false), /* pcrel_offset */ | |
253 | ||
254 | /* 6 bit offset from the tiny data area pointer. */ | |
255 | HOWTO (R_V850_TDA_6_8_OFFSET, /* type */ | |
256 | 2, /* rightshift */ | |
257 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 8, /* bitsize */ | |
259 | false, /* pc_relative */ | |
260 | 1, /* bitpos */ | |
261 | complain_overflow_dont, /* complain_on_overflow */ | |
262 | v850_elf_reloc, /* special_function */ | |
263 | "R_V850_TDA_6_8_OFFSET", /* name */ | |
264 | false, /* partial_inplace */ | |
265 | 0x7e, /* src_mask */ | |
266 | 0x7e, /* dst_mask */ | |
267 | false), /* pcrel_offset */ | |
268 | ||
269 | /* 8 bit offset from the tiny data area pointer. */ | |
270 | HOWTO (R_V850_TDA_7_8_OFFSET, /* type */ | |
271 | 1, /* rightshift */ | |
272 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
273 | 8, /* bitsize */ | |
274 | false, /* pc_relative */ | |
275 | 0, /* bitpos */ | |
276 | complain_overflow_dont, /* complain_on_overflow */ | |
277 | v850_elf_reloc, /* special_function */ | |
278 | "R_V850_TDA_7_8_OFFSET", /* name */ | |
279 | false, /* partial_inplace */ | |
280 | 0x7f, /* src_mask */ | |
281 | 0x7f, /* dst_mask */ | |
282 | false), /* pcrel_offset */ | |
283 | ||
284 | /* 7 bit offset from the tiny data area pointer. */ | |
285 | HOWTO (R_V850_TDA_7_7_OFFSET, /* type */ | |
286 | 0, /* rightshift */ | |
287 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 7, /* bitsize */ | |
289 | false, /* pc_relative */ | |
290 | 0, /* bitpos */ | |
291 | complain_overflow_dont, /* complain_on_overflow */ | |
292 | v850_elf_reloc, /* special_function */ | |
293 | "R_V850_TDA_7_7_OFFSET", /* name */ | |
294 | false, /* partial_inplace */ | |
295 | 0x7f, /* src_mask */ | |
296 | 0x7f, /* dst_mask */ | |
297 | false), /* pcrel_offset */ | |
298 | ||
5bb28764 NC |
299 | /* 16 bit offset from the tiny data area pointer! */ |
300 | HOWTO (R_V850_TDA_16_16_OFFSET, /* type */ | |
301 | 0, /* rightshift */ | |
302 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
303 | 16, /* bitsize */ | |
304 | false, /* pc_relative */ | |
305 | 0, /* bitpos */ | |
306 | complain_overflow_dont, /* complain_on_overflow */ | |
307 | v850_elf_reloc, /* special_function */ | |
308 | "R_V850_TDA_16_16_OFFSET", /* name */ | |
309 | false, /* partial_inplace */ | |
310 | 0xffff, /* src_mask */ | |
311 | 0xfff, /* dst_mask */ | |
312 | false), /* pcrel_offset */ | |
313 | ||
def31039 NC |
314 | /* start-sanitize-v850e */ |
315 | ||
316 | /* 5 bit offset from the tiny data area pointer. */ | |
317 | HOWTO (R_V850_TDA_4_5_OFFSET, /* type */ | |
318 | 1, /* rightshift */ | |
319 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
320 | 5, /* bitsize */ | |
321 | false, /* pc_relative */ | |
322 | 0, /* bitpos */ | |
323 | complain_overflow_dont, /* complain_on_overflow */ | |
324 | v850_elf_reloc, /* special_function */ | |
325 | "R_V850_TDA_4_5_OFFSET", /* name */ | |
326 | false, /* partial_inplace */ | |
327 | 0x0f, /* src_mask */ | |
328 | 0x0f, /* dst_mask */ | |
329 | false), /* pcrel_offset */ | |
330 | ||
331 | /* 4 bit offset from the tiny data area pointer. */ | |
332 | HOWTO (R_V850_TDA_4_4_OFFSET, /* type */ | |
333 | 0, /* rightshift */ | |
334 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
335 | 4, /* bitsize */ | |
336 | false, /* pc_relative */ | |
337 | 0, /* bitpos */ | |
338 | complain_overflow_dont, /* complain_on_overflow */ | |
339 | v850_elf_reloc, /* special_function */ | |
340 | "R_V850_TDA_4_4_OFFSET", /* name */ | |
341 | false, /* partial_inplace */ | |
342 | 0x0f, /* src_mask */ | |
343 | 0x0f, /* dst_mask */ | |
344 | false), /* pcrel_offset */ | |
345 | ||
346 | /* 16 bit offset from the short data area pointer. */ | |
347 | HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */ | |
de224d6a MM |
348 | 0, /* rightshift */ |
349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
def31039 | 350 | 16, /* bitsize */ |
de224d6a MM |
351 | false, /* pc_relative */ |
352 | 0, /* bitpos */ | |
353 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 354 | v850_elf_reloc, /* special_function */ |
def31039 NC |
355 | "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */ |
356 | false, /* partial_inplace */ | |
357 | 0xfffe0020, /* src_mask */ | |
358 | 0xfffe0020, /* dst_mask */ | |
de224d6a | 359 | false), /* pcrel_offset */ |
b6d08fce | 360 | |
def31039 NC |
361 | /* 16 bit offset from the zero data area pointer. */ |
362 | HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 16, /* bitsize */ | |
366 | false, /* pc_relative */ | |
367 | 0, /* bitpos */ | |
368 | complain_overflow_dont, /* complain_on_overflow */ | |
369 | v850_elf_reloc, /* special_function */ | |
370 | "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */ | |
371 | false, /* partial_inplace */ | |
372 | 0xfffe0020, /* src_mask */ | |
373 | 0xfffe0020, /* dst_mask */ | |
374 | false), /* pcrel_offset */ | |
375 | ||
9420c20a NC |
376 | /* 6 bit offset from the call table base pointer. */ |
377 | HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 7, /* bitsize */ | |
381 | false, /* pc_relative */ | |
382 | 0, /* bitpos */ | |
383 | complain_overflow_dont, /* complain_on_overflow */ | |
384 | v850_elf_reloc, /* special_function */ | |
385 | "R_V850_CALLT_6_7_OFFSET", /* name */ | |
386 | false, /* partial_inplace */ | |
387 | 0x3f, /* src_mask */ | |
388 | 0x3f, /* dst_mask */ | |
389 | false), /* pcrel_offset */ | |
390 | ||
391 | /* 16 bit offset from the call table base pointer. */ | |
392 | HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */ | |
393 | 0, /* rightshift */ | |
394 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
395 | 16, /* bitsize */ | |
396 | false, /* pc_relative */ | |
397 | 0, /* bitpos */ | |
398 | complain_overflow_dont, /* complain_on_overflow */ | |
399 | v850_elf_reloc, /* special_function */ | |
400 | "R_V850_CALLT_16_16_OFFSET", /* name */ | |
401 | false, /* partial_inplace */ | |
402 | 0xffff, /* src_mask */ | |
403 | 0xffff, /* dst_mask */ | |
404 | false), /* pcrel_offset */ | |
405 | ||
def31039 | 406 | /* end-sanitize-v850e */ |
01b49cb3 C |
407 | }; |
408 | ||
409 | /* Map BFD reloc types to V850 ELF reloc types. */ | |
410 | ||
de224d6a | 411 | struct v850_elf_reloc_map |
01b49cb3 C |
412 | { |
413 | unsigned char bfd_reloc_val; | |
414 | unsigned char elf_reloc_val; | |
415 | }; | |
416 | ||
de224d6a | 417 | static const struct v850_elf_reloc_map v850_elf_reloc_map[] = |
01b49cb3 | 418 | { |
def31039 NC |
419 | { BFD_RELOC_NONE, R_V850_NONE }, |
420 | { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL }, | |
def31039 NC |
421 | { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL }, |
422 | { BFD_RELOC_HI16_S, R_V850_HI16_S }, | |
423 | { BFD_RELOC_HI16, R_V850_HI16 }, | |
424 | { BFD_RELOC_LO16, R_V850_LO16 }, | |
425 | { BFD_RELOC_32, R_V850_32 }, | |
426 | { BFD_RELOC_16, R_V850_16 }, | |
427 | { BFD_RELOC_8, R_V850_8 }, | |
428 | { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET }, | |
429 | { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, | |
430 | { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, | |
431 | { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, | |
9420c20a NC |
432 | { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, |
433 | { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, | |
434 | { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, | |
5bb28764 | 435 | { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, |
def31039 | 436 | /* start-sanitize-v850e */ |
9420c20a NC |
437 | { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, |
438 | { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, | |
def31039 NC |
439 | { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, |
440 | { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, | |
9420c20a NC |
441 | { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, |
442 | { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, | |
def31039 | 443 | /* end-sanitize-v850e */ |
01b49cb3 C |
444 | }; |
445 | ||
de224d6a MM |
446 | \f |
447 | /* Map a bfd relocation into the appropriate howto structure */ | |
01b49cb3 | 448 | static reloc_howto_type * |
de224d6a | 449 | v850_elf_reloc_type_lookup (abfd, code) |
9420c20a NC |
450 | bfd * abfd; |
451 | bfd_reloc_code_real_type code; | |
01b49cb3 C |
452 | { |
453 | unsigned int i; | |
454 | ||
455 | for (i = 0; | |
de224d6a | 456 | i < sizeof (v850_elf_reloc_map) / sizeof (struct v850_elf_reloc_map); |
01b49cb3 C |
457 | i++) |
458 | { | |
de224d6a | 459 | if (v850_elf_reloc_map[i].bfd_reloc_val == code) |
def31039 NC |
460 | { |
461 | BFD_ASSERT (v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val].type == v850_elf_reloc_map[i].elf_reloc_val); | |
462 | ||
463 | return & v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val]; | |
464 | } | |
01b49cb3 C |
465 | } |
466 | ||
467 | return NULL; | |
468 | } | |
469 | ||
de224d6a | 470 | \f |
01b49cb3 | 471 | /* Set the howto pointer for an V850 ELF reloc. */ |
01b49cb3 | 472 | static void |
de224d6a | 473 | v850_elf_info_to_howto_rel (abfd, cache_ptr, dst) |
9420c20a NC |
474 | bfd * abfd; |
475 | arelent * cache_ptr; | |
476 | Elf32_Internal_Rel * dst; | |
01b49cb3 C |
477 | { |
478 | unsigned int r_type; | |
479 | ||
480 | r_type = ELF32_R_TYPE (dst->r_info); | |
481 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
de224d6a MM |
482 | cache_ptr->howto = &v850_elf_howto_table[r_type]; |
483 | } | |
484 | ||
485 | \f | |
486 | /* Look through the relocs for a section during the first phase, and | |
487 | allocate space in the global offset table or procedure linkage | |
488 | table. */ | |
489 | ||
490 | static boolean | |
491 | v850_elf_check_relocs (abfd, info, sec, relocs) | |
9420c20a NC |
492 | bfd * abfd; |
493 | struct bfd_link_info * info; | |
494 | asection * sec; | |
495 | const Elf_Internal_Rela * relocs; | |
de224d6a MM |
496 | { |
497 | boolean ret = true; | |
498 | bfd *dynobj; | |
499 | Elf_Internal_Shdr *symtab_hdr; | |
500 | struct elf_link_hash_entry **sym_hashes; | |
501 | const Elf_Internal_Rela *rel; | |
502 | const Elf_Internal_Rela *rel_end; | |
503 | asection *sreloc; | |
22a9f052 | 504 | enum v850_reloc_type r_type; |
de224d6a MM |
505 | int other = 0; |
506 | const char *common = (const char *)0; | |
507 | ||
508 | if (info->relocateable) | |
509 | return true; | |
510 | ||
511 | #ifdef DEBUG | |
512 | fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n", | |
513 | bfd_get_section_name (abfd, sec), | |
514 | bfd_get_filename (abfd)); | |
515 | #endif | |
516 | ||
517 | dynobj = elf_hash_table (info)->dynobj; | |
518 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
519 | sym_hashes = elf_sym_hashes (abfd); | |
520 | sreloc = NULL; | |
521 | ||
522 | rel_end = relocs + sec->reloc_count; | |
523 | for (rel = relocs; rel < rel_end; rel++) | |
524 | { | |
525 | unsigned long r_symndx; | |
526 | struct elf_link_hash_entry *h; | |
527 | ||
528 | r_symndx = ELF32_R_SYM (rel->r_info); | |
529 | if (r_symndx < symtab_hdr->sh_info) | |
530 | h = NULL; | |
531 | else | |
532 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
533 | ||
22a9f052 | 534 | r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info); |
de224d6a MM |
535 | switch (r_type) |
536 | { | |
537 | default: | |
538 | case R_V850_NONE: | |
539 | case R_V850_9_PCREL: | |
540 | case R_V850_22_PCREL: | |
541 | case R_V850_HI16_S: | |
542 | case R_V850_HI16: | |
543 | case R_V850_LO16: | |
544 | case R_V850_32: | |
545 | case R_V850_16: | |
546 | case R_V850_8: | |
9420c20a NC |
547 | /* start-sanitize-v850e */ |
548 | case R_V850_CALLT_6_7_OFFSET: | |
549 | case R_V850_CALLT_16_16_OFFSET: | |
550 | /* end-sanitize-v850e */ | |
de224d6a MM |
551 | break; |
552 | ||
def31039 NC |
553 | /* start-sanitize-v850e */ |
554 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
555 | /* end-sanitize-v850e */ | |
556 | case R_V850_SDA_16_16_OFFSET: | |
557 | case R_V850_SDA_15_16_OFFSET: | |
de224d6a MM |
558 | other = V850_OTHER_SDA; |
559 | common = ".scommon"; | |
560 | goto small_data_common; | |
def31039 NC |
561 | |
562 | /* start-sanitize-v850e */ | |
563 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
564 | /* end-sanitize-v850e */ | |
565 | case R_V850_ZDA_16_16_OFFSET: | |
566 | case R_V850_ZDA_15_16_OFFSET: | |
de224d6a MM |
567 | other = V850_OTHER_ZDA; |
568 | common = ".zcommon"; | |
569 | goto small_data_common; | |
def31039 NC |
570 | |
571 | /* start-sanitize-v850e */ | |
572 | case R_V850_TDA_4_5_OFFSET: | |
573 | case R_V850_TDA_4_4_OFFSET: | |
2cf9a0d0 | 574 | /* end-sanitize-v850e */ |
def31039 NC |
575 | case R_V850_TDA_6_8_OFFSET: |
576 | case R_V850_TDA_7_8_OFFSET: | |
577 | case R_V850_TDA_7_7_OFFSET: | |
5bb28764 | 578 | case R_V850_TDA_16_16_OFFSET: |
de224d6a MM |
579 | other = V850_OTHER_TDA; |
580 | common = ".tcommon"; | |
581 | /* fall through */ | |
582 | ||
583 | #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA) | |
584 | ||
585 | small_data_common: | |
586 | if (h) | |
587 | { | |
588 | h->other |= other; /* flag which type of relocation was used */ | |
589 | if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK) | |
590 | && (h->other & V850_OTHER_ERROR) == 0) | |
591 | { | |
55e6f0bf NC |
592 | const char * msg; |
593 | static char buff[100]; /* XXX */ | |
594 | ||
de224d6a MM |
595 | switch (h->other & V850_OTHER_MASK) |
596 | { | |
597 | default: | |
55e6f0bf | 598 | msg = "cannot occupy in multiple small data regions"; |
de224d6a MM |
599 | break; |
600 | case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA: | |
55e6f0bf | 601 | msg = "can only be in one of the small, zero, and tiny data regions"; |
de224d6a MM |
602 | break; |
603 | case V850_OTHER_SDA | V850_OTHER_ZDA: | |
55e6f0bf | 604 | msg = "cannot be in both small and zero data regions simultaneously"; |
de224d6a MM |
605 | break; |
606 | case V850_OTHER_SDA | V850_OTHER_TDA: | |
55e6f0bf | 607 | msg = "cannot be in both small and tiny data regions simultaneously"; |
de224d6a MM |
608 | break; |
609 | case V850_OTHER_ZDA | V850_OTHER_TDA: | |
55e6f0bf | 610 | msg = "cannot be in both zero and tiny data regions simultaneously"; |
de224d6a MM |
611 | break; |
612 | } | |
613 | ||
55e6f0bf NC |
614 | sprintf (buff, "Variable '%s' %s", h->root.root.string, msg ); |
615 | info->callbacks->warning (info, buff, h->root.root.string, | |
616 | abfd, h->root.u.def.section, 0); | |
de224d6a MM |
617 | |
618 | bfd_set_error (bfd_error_bad_value); | |
619 | h->other |= V850_OTHER_ERROR; | |
620 | ret = false; | |
621 | } | |
622 | } | |
623 | ||
8988d935 | 624 | if (h && h->root.type == bfd_link_hash_common |
de224d6a MM |
625 | && h->root.u.c.p |
626 | && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON")) | |
627 | { | |
628 | asection *section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common); | |
629 | section->flags |= SEC_IS_COMMON; | |
630 | } | |
631 | ||
632 | #ifdef DEBUG | |
633 | fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n", | |
634 | v850_elf_howto_table[ (int)r_type ].name, | |
635 | (h && h->root.root.string) ? h->root.root.string : "<unknown>", | |
636 | (h->root.type == bfd_link_hash_common) ? ", symbol is common" : ""); | |
637 | #endif | |
638 | break; | |
639 | } | |
640 | } | |
641 | ||
642 | return ret; | |
01b49cb3 C |
643 | } |
644 | ||
e73b6ae6 | 645 | static bfd_reloc_status_type |
22a9f052 NC |
646 | v850_elf_store_addend_in_insn (abfd, r_type, addend, address, replace) |
647 | bfd * abfd; | |
648 | int r_type; | |
649 | long addend; | |
650 | bfd_byte * address; | |
651 | boolean replace; | |
e73b6ae6 | 652 | { |
75172c0f NC |
653 | static long last_hi16s_addend; |
654 | static bfd_byte * last_hi16s_address; | |
22a9f052 | 655 | unsigned long insn; |
5ddf2a9e | 656 | |
22a9f052 | 657 | switch (r_type) |
5ddf2a9e NC |
658 | { |
659 | default: | |
22a9f052 | 660 | /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */ |
5ddf2a9e NC |
661 | return bfd_reloc_notsupported; |
662 | ||
22a9f052 NC |
663 | case R_V850_32: |
664 | if (! replace) | |
665 | addend += bfd_get_32 (abfd, address); | |
666 | ||
667 | bfd_put_32 (abfd, addend, address); | |
668 | return bfd_reloc_ok; | |
669 | ||
5ddf2a9e | 670 | case R_V850_22_PCREL: |
22a9f052 | 671 | if (addend > 0x1fffff || addend < -0x200000) |
5ddf2a9e NC |
672 | return bfd_reloc_overflow; |
673 | ||
22a9f052 | 674 | if ((addend % 2) != 0) |
5ddf2a9e NC |
675 | return bfd_reloc_dangerous; |
676 | ||
22a9f052 | 677 | insn = bfd_get_32 (abfd, address); |
5ddf2a9e | 678 | insn &= ~0xfffe003f; |
22a9f052 NC |
679 | insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16)); |
680 | bfd_put_32 (abfd, insn, address); | |
5ddf2a9e NC |
681 | return bfd_reloc_ok; |
682 | ||
683 | case R_V850_9_PCREL: | |
22a9f052 | 684 | if (addend > 0xff || addend < -0x100) |
5ddf2a9e NC |
685 | return bfd_reloc_overflow; |
686 | ||
22a9f052 | 687 | if ((addend % 2) != 0) |
5ddf2a9e NC |
688 | return bfd_reloc_dangerous; |
689 | ||
22a9f052 | 690 | insn = bfd_get_16 (abfd, address); |
5ddf2a9e | 691 | insn &= ~ 0xf870; |
22a9f052 NC |
692 | insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3); |
693 | break; | |
5ddf2a9e NC |
694 | |
695 | case R_V850_HI16_S: | |
75172c0f NC |
696 | last_hi16s_addend = addend; |
697 | last_hi16s_address = address; | |
698 | ||
0a5875fc | 699 | addend += (bfd_get_16 (abfd, address) << 16); |
22a9f052 | 700 | addend = (addend >> 16) + ((addend & 0x8000) != 0); |
75172c0f NC |
701 | /* This relocation cannot overflow. */ |
702 | if (addend > 0x7fff || addend < -0x8000) | |
703 | addend = 0; | |
22a9f052 NC |
704 | insn = addend; |
705 | break; | |
5ddf2a9e NC |
706 | |
707 | case R_V850_HI16: | |
0a5875fc | 708 | addend += (bfd_get_16 (abfd, address) << 16); |
22a9f052 NC |
709 | addend = (addend >> 16); |
710 | insn = addend; | |
711 | break; | |
5ddf2a9e NC |
712 | |
713 | case R_V850_LO16: | |
75172c0f NC |
714 | /* Calculate the sum of the value stored in the instruction and the |
715 | addend and check for overflow from the low 16 bits into the high | |
716 | 16 bits. This can occur if the computation sets the 16th bit when | |
717 | before it was clear, since the 16th bit will be sign extended into | |
718 | the high part, thus reducing its value by one, but since the 16th bit | |
719 | was originally clear, the previous R_V850_HI16_S relocation will not | |
720 | have added in an additional 1 to the high part to compensate for this | |
721 | effect. Overflow can also occur if the compuation carries into the | |
722 | 17th bit and it also results in the 16th bit having the same value as | |
723 | the 16th bit of the original value. What happens is that the | |
724 | R_V850_HI16_S relocation will have already examined the 16th bit of | |
725 | the original value and added 1 to the high part if the bit is set. | |
726 | This compensates for the sign extension of 16th bit of the result of | |
727 | the computation. But now there is a carry into the 17th bit, and this | |
728 | has not been allowed for. Note - there is no need to change anything | |
729 | if a carry occurs, and the 16th bit changes its value, (this can only | |
730 | happen if the bit was set in the original value, but is clear in the | |
731 | result of the computation), as the R_V850_HI16_S relocation will have | |
732 | already added in 1 to the high part for us. Here are some examples: | |
733 | ||
734 | original value = 0x12345 | |
735 | addend = 0x01234 | |
736 | ------- | |
737 | 0x13579 => R_V850_HI16_S stores 0x0001 | |
738 | R_V850_LO16 stores 0x3579 | |
739 | ||
740 | This is OK. | |
741 | ||
742 | original value = 0x12345 | |
743 | addend = 0x07000 | |
744 | ------- | |
745 | 0x19345 => R_V850_HI16_S stores 0x0001 | |
746 | R_V850_LO16 stores 0x9345 | |
747 | ||
748 | but the 0x9345 value gets sign | |
749 | extended, so the sum becomes: | |
750 | ||
751 | 0x00010000 | |
752 | 0xffff9345 | |
753 | ---------- | |
754 | 0x00009345 which is wrong. | |
755 | ||
756 | This is the first example of overflow. | |
757 | ||
758 | original value = 0x18888 | |
759 | addend = 0x08888 | |
760 | ------- | |
761 | 0x21110 => R_V850_HI16_S stores 0x0002 (because 16th bit of the original value is set) | |
762 | R_V850_LO16 stores 0x1110 | |
763 | ||
764 | and the sum is now: | |
765 | ||
766 | 0x00020000 | |
767 | 0x00001110 | |
768 | ---------- | |
769 | 0x00021110 which is OK. | |
770 | ||
771 | original value = 0x1ffff | |
772 | addend = 0x08888 | |
773 | ------- | |
774 | 0x28887 => R_V850_HI16_S stores 0x0002 | |
775 | R_V850_LO16 stores 0x8887 | |
776 | ||
777 | and the sum is now: | |
778 | ||
779 | 0x00020000 | |
780 | 0xffff8887 | |
781 | ---------- | |
782 | 0x00018887 which is wrong. | |
783 | ||
784 | This is the second example of overflow. | |
785 | (The 16th bit remains set). | |
786 | ||
787 | original value = 0x15555 | |
788 | addend = 0x0ffff | |
789 | ------- | |
790 | 0x25554 => R_V850_HI16_S stores 0x0001 | |
791 | R_V850_LO16 stores 0x5554 | |
792 | ||
793 | the sum is now: | |
794 | ||
795 | 0x00010000 | |
796 | 0x00005554 | |
797 | ---------- | |
798 | 0x00015554 which is wrong. | |
799 | ||
800 | This is the other form of the second | |
801 | example of overflow. (The 16th bit | |
802 | remains clear) | |
803 | */ | |
804 | ||
805 | { | |
806 | long result; | |
807 | ||
808 | insn = bfd_get_16 (abfd, address); | |
809 | result = insn + addend; | |
810 | ||
811 | #define BIT16_SET(x) ((x) & 0x8000) | |
812 | #define OVERFLOWS(a,i) (((a) & 0xffff) + (i) > 0xffff) | |
813 | ||
814 | if ((BIT16_SET (result) && ! BIT16_SET (addend)) | |
815 | || (OVERFLOWS (addend, insn) | |
816 | && (BIT16_SET (result) == BIT16_SET (addend)))) | |
817 | { | |
818 | /* Amend the preceding HI16_S relocation, allowing for | |
819 | an intervening instruction, which does occasionally happen. */ | |
820 | if ( (addend == last_hi16s_addend) | |
821 | && ( (address == last_hi16s_address + 4) | |
822 | || (address == last_hi16s_address + 8))) | |
823 | { | |
824 | insn = bfd_get_16 (abfd, last_hi16s_address); | |
825 | insn += 1; | |
826 | bfd_put_16 (abfd, insn, last_hi16s_address); | |
827 | } | |
828 | else | |
829 | { | |
830 | fprintf (stderr, "FAILED to find previous HI16 reloc:\n"); | |
831 | fprintf (stderr, "addend = %x, last_hi16s_added = %x, address = %x, last_address = %x\n", | |
832 | addend, last_hi16s_addend, address, last_hi16s_address); | |
833 | fprintf (stderr, "addend = %x, result = %x, insn = %x\n", | |
834 | addend, result, insn); | |
835 | return bfd_reloc_overflow; | |
836 | } | |
837 | } | |
838 | ||
839 | /* Do not complain if value has top bit set, as this has been anticipated. */ | |
840 | insn = result & 0xffff; | |
841 | } | |
842 | break; | |
843 | ||
844 | case R_V850_8: | |
845 | if (! replace) | |
846 | addend += (char) bfd_get_8 (abfd, address); | |
847 | ||
848 | if (addend > 0x7f || addend < -0x80) | |
849 | return bfd_reloc_overflow; | |
850 | ||
851 | bfd_put_8 (abfd, addend, address); | |
852 | return bfd_reloc_ok; | |
def31039 | 853 | |
22a9f052 NC |
854 | /* start-sanitize-v850e */ |
855 | case R_V850_CALLT_16_16_OFFSET: | |
75172c0f NC |
856 | if (! replace) |
857 | addend += bfd_get_16 (abfd, address); | |
858 | ||
859 | if (addend > 0xffff || addend < 0) | |
860 | return bfd_reloc_overflow; | |
861 | ||
862 | insn = addend; | |
863 | break; | |
22a9f052 | 864 | /* end-sanitize-v850e */ |
75172c0f NC |
865 | |
866 | case R_V850_16: | |
867 | replace = false; | |
868 | /* drop through */ | |
5ddf2a9e NC |
869 | case R_V850_SDA_16_16_OFFSET: |
870 | case R_V850_ZDA_16_16_OFFSET: | |
5bb28764 | 871 | case R_V850_TDA_16_16_OFFSET: |
22a9f052 NC |
872 | if (! replace) |
873 | addend += bfd_get_16 (abfd, address); | |
874 | ||
875 | if (addend > 0x7fff || addend < -0x8000) | |
5ddf2a9e | 876 | return bfd_reloc_overflow; |
22a9f052 NC |
877 | |
878 | insn = addend; | |
879 | break; | |
5ddf2a9e NC |
880 | |
881 | case R_V850_SDA_15_16_OFFSET: | |
882 | case R_V850_ZDA_15_16_OFFSET: | |
22a9f052 NC |
883 | insn = bfd_get_16 (abfd, address); |
884 | ||
885 | if (! replace) | |
75172c0f | 886 | addend += (insn & 0xfffe); |
22a9f052 NC |
887 | |
888 | if (addend > 0x7ffe || addend < -0x8000) | |
5ddf2a9e NC |
889 | return bfd_reloc_overflow; |
890 | ||
22a9f052 | 891 | if (addend & 1) |
5ddf2a9e NC |
892 | return bfd_reloc_dangerous; |
893 | ||
75172c0f | 894 | insn = (addend & ~1) | (insn & 1); |
22a9f052 | 895 | break; |
5ddf2a9e NC |
896 | |
897 | case R_V850_TDA_6_8_OFFSET: | |
22a9f052 NC |
898 | insn = bfd_get_16 (abfd, address); |
899 | ||
900 | if (! replace) | |
901 | addend += ((insn & 0x7e) << 1); | |
902 | ||
903 | if (addend > 0xfc || addend < 0) | |
5ddf2a9e NC |
904 | return bfd_reloc_overflow; |
905 | ||
22a9f052 | 906 | if (addend & 3) |
5ddf2a9e NC |
907 | return bfd_reloc_dangerous; |
908 | ||
5ddf2a9e | 909 | insn &= 0xff81; |
22a9f052 NC |
910 | insn |= (addend >> 1); |
911 | break; | |
5ddf2a9e NC |
912 | |
913 | case R_V850_TDA_7_8_OFFSET: | |
22a9f052 NC |
914 | insn = bfd_get_16 (abfd, address); |
915 | ||
916 | if (! replace) | |
917 | addend += ((insn & 0x7f) << 1); | |
918 | ||
919 | if (addend > 0xfe || addend < 0) | |
5ddf2a9e NC |
920 | return bfd_reloc_overflow; |
921 | ||
22a9f052 | 922 | if (addend & 1) |
5ddf2a9e NC |
923 | return bfd_reloc_dangerous; |
924 | ||
5ddf2a9e | 925 | insn &= 0xff80; |
22a9f052 NC |
926 | insn |= (addend >> 1); |
927 | break; | |
5ddf2a9e NC |
928 | |
929 | case R_V850_TDA_7_7_OFFSET: | |
22a9f052 NC |
930 | insn = bfd_get_16 (abfd, address); |
931 | ||
932 | if (! replace) | |
933 | addend += insn & 0x7f; | |
934 | ||
935 | if (addend > 0x7f || addend < 0) | |
5ddf2a9e NC |
936 | return bfd_reloc_overflow; |
937 | ||
5ddf2a9e | 938 | insn &= 0xff80; |
22a9f052 NC |
939 | insn |= addend; |
940 | break; | |
5ddf2a9e | 941 | |
def31039 | 942 | /* start-sanitize-v850e */ |
5ddf2a9e | 943 | case R_V850_TDA_4_5_OFFSET: |
22a9f052 NC |
944 | insn = bfd_get_16 (abfd, address); |
945 | ||
946 | if (! replace) | |
947 | addend += ((insn & 0xf) << 1); | |
948 | ||
949 | if (addend > 0x1e || addend < 0) | |
5ddf2a9e NC |
950 | return bfd_reloc_overflow; |
951 | ||
22a9f052 | 952 | if (addend & 1) |
5ddf2a9e NC |
953 | return bfd_reloc_dangerous; |
954 | ||
5ddf2a9e | 955 | insn &= 0xfff0; |
22a9f052 NC |
956 | insn |= (addend >> 1); |
957 | break; | |
5ddf2a9e NC |
958 | |
959 | case R_V850_TDA_4_4_OFFSET: | |
22a9f052 NC |
960 | insn = bfd_get_16 (abfd, address); |
961 | ||
962 | if (! replace) | |
963 | addend += insn & 0xf; | |
964 | ||
965 | if (addend > 0xf || addend < 0) | |
5ddf2a9e NC |
966 | return bfd_reloc_overflow; |
967 | ||
5ddf2a9e | 968 | insn &= 0xfff0; |
22a9f052 NC |
969 | insn |= addend; |
970 | break; | |
5ddf2a9e NC |
971 | |
972 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
973 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
22a9f052 NC |
974 | insn = bfd_get_32 (abfd, address); |
975 | ||
976 | if (! replace) | |
977 | addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5); | |
5ddf2a9e | 978 | |
75172c0f | 979 | if (addend > 0x7fff || addend < -0x8000) |
22a9f052 | 980 | return bfd_reloc_overflow; |
5ddf2a9e NC |
981 | |
982 | insn &= 0x0001ffdf; | |
22a9f052 NC |
983 | insn |= (addend & 1) << 5; |
984 | insn |= (addend & ~1) << 16; | |
5ddf2a9e | 985 | |
22a9f052 | 986 | bfd_put_32 (abfd, insn, address); |
5ddf2a9e | 987 | return bfd_reloc_ok; |
9420c20a NC |
988 | |
989 | case R_V850_CALLT_6_7_OFFSET: | |
22a9f052 NC |
990 | insn = bfd_get_16 (abfd, address); |
991 | ||
992 | if (! replace) | |
993 | addend += ((insn & 0x3f) << 1); | |
994 | ||
995 | if (addend > 0x7e || addend < 0) | |
9420c20a NC |
996 | return bfd_reloc_overflow; |
997 | ||
22a9f052 | 998 | if (addend & 1) |
9420c20a NC |
999 | return bfd_reloc_dangerous; |
1000 | ||
9420c20a | 1001 | insn &= 0xff80; |
22a9f052 NC |
1002 | insn |= (addend >> 1); |
1003 | break; | |
1004 | /* end-sanitize-v850e */ | |
1005 | } | |
1006 | ||
1007 | bfd_put_16 (abfd, insn, address); | |
1008 | return bfd_reloc_ok; | |
1009 | } | |
1010 | ||
1011 | \f | |
1012 | /* Insert the addend into the instruction. */ | |
1013 | static bfd_reloc_status_type | |
1014 | v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err) | |
1015 | bfd * abfd; | |
1016 | arelent * reloc; | |
1017 | asymbol * symbol; | |
1018 | PTR data; | |
1019 | asection * isection; | |
1020 | bfd * obfd; | |
1021 | char ** err; | |
1022 | { | |
1023 | long relocation; | |
1024 | long insn; | |
1025 | ||
1026 | ||
1027 | /* If there is an output BFD, | |
1028 | and the symbol is not a section name (which is only defined at final link time), | |
1029 | and either we are not putting the addend into the instruction | |
1030 | or the addend is zero, so there is nothing to add into the instruction | |
1031 | then just fixup the address and return. */ | |
1032 | if (obfd != (bfd *) NULL | |
1033 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1034 | && (! reloc->howto->partial_inplace | |
1035 | || reloc->addend == 0)) | |
1036 | { | |
1037 | reloc->address += isection->output_offset; | |
9420c20a | 1038 | return bfd_reloc_ok; |
22a9f052 NC |
1039 | } |
1040 | #if 0 | |
1041 | else if (obfd != NULL) | |
1042 | { | |
1043 | return bfd_reloc_continue; | |
1044 | } | |
1045 | #endif | |
1046 | ||
1047 | /* Catch relocs involving undefined symbols. */ | |
1048 | if (bfd_is_und_section (symbol->section) | |
1049 | && (symbol->flags & BSF_WEAK) == 0 | |
1050 | && obfd == NULL) | |
1051 | return bfd_reloc_undefined; | |
1052 | ||
1053 | /* We handle final linking of some relocs ourselves. */ | |
1054 | ||
1055 | /* Is the address of the relocation really within the section? */ | |
1056 | if (reloc->address > isection->_cooked_size) | |
1057 | return bfd_reloc_outofrange; | |
1058 | ||
1059 | /* Work out which section the relocation is targetted at and the | |
1060 | initial relocation command value. */ | |
1061 | ||
1062 | /* Get symbol value. (Common symbols are special.) */ | |
1063 | if (bfd_is_com_section (symbol->section)) | |
1064 | relocation = 0; | |
1065 | else | |
1066 | relocation = symbol->value; | |
1067 | ||
1068 | /* Convert input-section-relative symbol value to absolute + addend. */ | |
1069 | relocation += symbol->section->output_section->vma; | |
1070 | relocation += symbol->section->output_offset; | |
1071 | relocation += reloc->addend; | |
1072 | ||
1073 | if (reloc->howto->pc_relative == true) | |
1074 | { | |
1075 | /* Here the variable relocation holds the final address of the | |
1076 | symbol we are relocating against, plus any addend. */ | |
1077 | relocation -= isection->output_section->vma + isection->output_offset; | |
9420c20a | 1078 | |
22a9f052 NC |
1079 | /* Deal with pcrel_offset */ |
1080 | relocation -= reloc->address; | |
e73b6ae6 JL |
1081 | } |
1082 | ||
22a9f052 NC |
1083 | /* I've got no clue... */ |
1084 | reloc->addend = 0; | |
1085 | ||
1086 | return v850_elf_store_addend_in_insn (abfd, reloc->howto->type, relocation, | |
1087 | (bfd_byte *) data + reloc->address, true); | |
e73b6ae6 JL |
1088 | } |
1089 | ||
de224d6a | 1090 | \f |
1336da39 SG |
1091 | /*ARGSUSED*/ |
1092 | static boolean | |
8988d935 | 1093 | v850_elf_is_local_label_name (abfd, name) |
9420c20a NC |
1094 | bfd * abfd; |
1095 | const char * name; | |
1336da39 | 1096 | { |
22a9f052 NC |
1097 | return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.')) |
1098 | || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')); | |
1336da39 SG |
1099 | } |
1100 | ||
de224d6a | 1101 | \f |
725b96f5 JL |
1102 | /* Perform a relocation as part of a final link. */ |
1103 | static bfd_reloc_status_type | |
de224d6a | 1104 | v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
725b96f5 JL |
1105 | input_section, contents, offset, value, |
1106 | addend, info, sym_sec, is_local) | |
def31039 NC |
1107 | reloc_howto_type * howto; |
1108 | bfd * input_bfd; | |
1109 | bfd * output_bfd; | |
1110 | asection * input_section; | |
1111 | bfd_byte * contents; | |
1112 | bfd_vma offset; | |
1113 | bfd_vma value; | |
1114 | bfd_vma addend; | |
1115 | struct bfd_link_info * info; | |
1116 | asection * sym_sec; | |
1117 | int is_local; | |
725b96f5 | 1118 | { |
def31039 NC |
1119 | unsigned long r_type = howto->type; |
1120 | bfd_byte * hit_data = contents + offset; | |
725b96f5 | 1121 | |
75172c0f | 1122 | /* Adjust the value according to the relocation. */ |
725b96f5 JL |
1123 | switch (r_type) |
1124 | { | |
1125 | case R_V850_9_PCREL: | |
1126 | value -= (input_section->output_section->vma | |
1127 | + input_section->output_offset); | |
1128 | value -= offset; | |
75172c0f | 1129 | break; |
725b96f5 JL |
1130 | |
1131 | case R_V850_22_PCREL: | |
1132 | value -= (input_section->output_section->vma | |
22a9f052 NC |
1133 | + input_section->output_offset |
1134 | + offset); | |
1135 | ||
1136 | value = SEXT24 (value); /* Only the bottom 24 bits of the PC are valid */ | |
75172c0f | 1137 | break; |
725b96f5 JL |
1138 | |
1139 | case R_V850_HI16_S: | |
725b96f5 | 1140 | case R_V850_HI16: |
725b96f5 | 1141 | case R_V850_LO16: |
725b96f5 | 1142 | case R_V850_16: |
75172c0f NC |
1143 | case R_V850_32: |
1144 | case R_V850_8: | |
1145 | break; | |
725b96f5 | 1146 | |
def31039 | 1147 | case R_V850_ZDA_15_16_OFFSET: |
75172c0f NC |
1148 | case R_V850_ZDA_16_16_OFFSET: |
1149 | /* start-sanitize-v850e */ | |
1150 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
1151 | /* end-sanitize-v850e */ | |
db1fa6ab NC |
1152 | if (sym_sec == NULL) |
1153 | return bfd_reloc_undefined; | |
1154 | ||
def31039 | 1155 | value -= sym_sec->output_section->vma; |
75172c0f | 1156 | break; |
725b96f5 | 1157 | |
75172c0f | 1158 | case R_V850_SDA_15_16_OFFSET: |
def31039 | 1159 | case R_V850_SDA_16_16_OFFSET: |
75172c0f NC |
1160 | /* start-sanitize-v850e */ |
1161 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
1162 | /* end-sanitize-v850e */ | |
725b96f5 | 1163 | { |
def31039 NC |
1164 | unsigned long gp; |
1165 | struct bfd_link_hash_entry * h; | |
725b96f5 | 1166 | |
75172c0f NC |
1167 | if (sym_sec == NULL) |
1168 | return bfd_reloc_undefined; | |
db1fa6ab | 1169 | |
def31039 NC |
1170 | /* Get the value of __gp. */ |
1171 | h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true); | |
1172 | if (h == (struct bfd_link_hash_entry *) NULL | |
1173 | || h->type != bfd_link_hash_defined) | |
1174 | return bfd_reloc_other; | |
1175 | ||
1176 | gp = (h->u.def.value | |
1177 | + h->u.def.section->output_section->vma | |
1178 | + h->u.def.section->output_offset); | |
75172c0f | 1179 | |
def31039 NC |
1180 | value -= sym_sec->output_section->vma; |
1181 | value -= (gp - sym_sec->output_section->vma); | |
5bb28764 | 1182 | } |
75172c0f | 1183 | break; |
5bb28764 | 1184 | |
def31039 | 1185 | /* start-sanitize-v850e */ |
75172c0f | 1186 | case R_V850_TDA_4_4_OFFSET: |
def31039 | 1187 | case R_V850_TDA_4_5_OFFSET: |
75172c0f NC |
1188 | /* end-sanitize-v850e */ |
1189 | case R_V850_TDA_16_16_OFFSET: | |
1190 | case R_V850_TDA_7_7_OFFSET: | |
1191 | case R_V850_TDA_7_8_OFFSET: | |
1192 | case R_V850_TDA_6_8_OFFSET: | |
def31039 NC |
1193 | { |
1194 | unsigned long ep; | |
1195 | struct bfd_link_hash_entry * h; | |
1196 | ||
1197 | /* Get the value of __ep. */ | |
1198 | h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true); | |
1199 | if (h == (struct bfd_link_hash_entry *) NULL | |
1200 | || h->type != bfd_link_hash_defined) | |
1201 | return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */ | |
c322f1b5 | 1202 | |
def31039 NC |
1203 | ep = (h->u.def.value |
1204 | + h->u.def.section->output_section->vma | |
1205 | + h->u.def.section->output_offset); | |
c322f1b5 | 1206 | |
def31039 | 1207 | value -= ep; |
def31039 | 1208 | } |
75172c0f | 1209 | break; |
def31039 | 1210 | |
75172c0f | 1211 | /* start-sanitize-v850e */ |
9420c20a NC |
1212 | case R_V850_CALLT_6_7_OFFSET: |
1213 | { | |
1214 | unsigned long ctbp; | |
1215 | struct bfd_link_hash_entry * h; | |
1216 | ||
1217 | /* Get the value of __ctbp. */ | |
1218 | h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); | |
1219 | if (h == (struct bfd_link_hash_entry *) NULL | |
1220 | || h->type != bfd_link_hash_defined) | |
676d3f02 | 1221 | return (bfd_reloc_dangerous + 1); /* Actually this indicates that __ctbp could not be found. */ |
9420c20a NC |
1222 | |
1223 | ctbp = (h->u.def.value | |
1224 | + h->u.def.section->output_section->vma | |
1225 | + h->u.def.section->output_offset); | |
1226 | value -= ctbp; | |
9420c20a | 1227 | } |
75172c0f | 1228 | break; |
def31039 | 1229 | |
9420c20a | 1230 | case R_V850_CALLT_16_16_OFFSET: |
9420c20a NC |
1231 | { |
1232 | unsigned long ctbp; | |
1233 | struct bfd_link_hash_entry * h; | |
1234 | ||
75172c0f NC |
1235 | if (sym_sec == NULL) |
1236 | return bfd_reloc_undefined; | |
1237 | ||
9420c20a NC |
1238 | /* Get the value of __ctbp. */ |
1239 | h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); | |
1240 | if (h == (struct bfd_link_hash_entry *) NULL | |
1241 | || h->type != bfd_link_hash_defined) | |
676d3f02 | 1242 | return (bfd_reloc_dangerous + 1); |
9420c20a NC |
1243 | |
1244 | ctbp = (h->u.def.value | |
1245 | + h->u.def.section->output_section->vma | |
1246 | + h->u.def.section->output_offset); | |
1247 | ||
1248 | value -= sym_sec->output_section->vma; | |
1249 | value -= (ctbp - sym_sec->output_section->vma); | |
9420c20a | 1250 | } |
75172c0f | 1251 | break; |
9420c20a | 1252 | /* end-sanitize-v850e */ |
75172c0f | 1253 | |
725b96f5 | 1254 | case R_V850_NONE: |
8988d935 NC |
1255 | return bfd_reloc_ok; |
1256 | ||
725b96f5 | 1257 | default: |
8988d935 | 1258 | return bfd_reloc_notsupported; |
725b96f5 | 1259 | } |
75172c0f NC |
1260 | |
1261 | /* Perform the relocation. */ | |
1262 | return v850_elf_store_addend_in_insn (input_bfd, r_type, value, hit_data, false); | |
725b96f5 JL |
1263 | } |
1264 | ||
de224d6a | 1265 | \f |
725b96f5 | 1266 | /* Relocate an V850 ELF section. */ |
725b96f5 JL |
1267 | static boolean |
1268 | v850_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
de224d6a | 1269 | contents, relocs, local_syms, local_sections) |
def31039 NC |
1270 | bfd * output_bfd; |
1271 | struct bfd_link_info * info; | |
1272 | bfd * input_bfd; | |
1273 | asection * input_section; | |
1274 | bfd_byte * contents; | |
1275 | Elf_Internal_Rela * relocs; | |
1276 | Elf_Internal_Sym * local_syms; | |
1277 | asection ** local_sections; | |
725b96f5 | 1278 | { |
def31039 NC |
1279 | Elf_Internal_Shdr * symtab_hdr; |
1280 | struct elf_link_hash_entry ** sym_hashes; | |
1281 | Elf_Internal_Rela * rel; | |
1282 | Elf_Internal_Rela * relend; | |
725b96f5 | 1283 | |
def31039 | 1284 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
725b96f5 JL |
1285 | sym_hashes = elf_sym_hashes (input_bfd); |
1286 | ||
def31039 | 1287 | rel = relocs; |
725b96f5 JL |
1288 | relend = relocs + input_section->reloc_count; |
1289 | for (; rel < relend; rel++) | |
1290 | { | |
def31039 NC |
1291 | int r_type; |
1292 | reloc_howto_type * howto; | |
1293 | unsigned long r_symndx; | |
1294 | Elf_Internal_Sym * sym; | |
1295 | asection * sec; | |
1296 | struct elf_link_hash_entry * h; | |
1297 | bfd_vma relocation; | |
1298 | bfd_reloc_status_type r; | |
725b96f5 | 1299 | |
8988d935 | 1300 | r_symndx = ELF32_R_SYM (rel->r_info); |
def31039 NC |
1301 | r_type = ELF32_R_TYPE (rel->r_info); |
1302 | howto = v850_elf_howto_table + r_type; | |
8988d935 | 1303 | |
725b96f5 JL |
1304 | if (info->relocateable) |
1305 | { | |
1306 | /* This is a relocateable link. We don't have to change | |
1307 | anything, unless the reloc is against a section symbol, | |
1308 | in which case we have to adjust according to where the | |
1309 | section symbol winds up in the output section. */ | |
1310 | if (r_symndx < symtab_hdr->sh_info) | |
1311 | { | |
1312 | sym = local_syms + r_symndx; | |
1313 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1314 | { | |
1315 | sec = local_sections[r_symndx]; | |
22a9f052 NC |
1316 | #ifdef USE_REL |
1317 | /* The Elf_Internal_Rel structure does not have space for the | |
1318 | modified addend value, so we store it in the instruction | |
1319 | instead. */ | |
1320 | ||
1321 | if (sec->output_offset + sym->st_value != 0) | |
1322 | { | |
1323 | if (v850_elf_store_addend_in_insn (input_bfd, r_type, | |
1324 | sec->output_offset + | |
1325 | sym->st_value, | |
1326 | contents + rel->r_offset, | |
1327 | false) | |
1328 | != bfd_reloc_ok) | |
1329 | { | |
1330 | info->callbacks->warning | |
1331 | (info, | |
1332 | "Unable to handle relocation during incremental link", | |
1333 | NULL, input_bfd, input_section, rel->r_offset); | |
1334 | } | |
1335 | } | |
1336 | #else | |
725b96f5 | 1337 | rel->r_addend += sec->output_offset + sym->st_value; |
22a9f052 | 1338 | #endif |
725b96f5 JL |
1339 | } |
1340 | } | |
1341 | ||
1342 | continue; | |
1343 | } | |
1344 | ||
725b96f5 JL |
1345 | /* This is a final link. */ |
1346 | h = NULL; | |
1347 | sym = NULL; | |
1348 | sec = NULL; | |
1349 | if (r_symndx < symtab_hdr->sh_info) | |
1350 | { | |
1351 | sym = local_syms + r_symndx; | |
1352 | sec = local_sections[r_symndx]; | |
1353 | relocation = (sec->output_section->vma | |
1354 | + sec->output_offset | |
1355 | + sym->st_value); | |
def31039 NC |
1356 | #if 0 |
1357 | { | |
1358 | char * name; | |
1359 | name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
1360 | name = (name == NULL) ? "<none>" : name; | |
75172c0f NC |
1361 | fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", |
1362 | sec->name, name, sym->st_name, | |
1363 | sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend); | |
def31039 NC |
1364 | } |
1365 | #endif | |
725b96f5 JL |
1366 | } |
1367 | else | |
1368 | { | |
1369 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
def31039 | 1370 | |
725b96f5 JL |
1371 | while (h->root.type == bfd_link_hash_indirect |
1372 | || h->root.type == bfd_link_hash_warning) | |
1373 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
def31039 | 1374 | |
725b96f5 JL |
1375 | if (h->root.type == bfd_link_hash_defined |
1376 | || h->root.type == bfd_link_hash_defweak) | |
1377 | { | |
1378 | sec = h->root.u.def.section; | |
1379 | relocation = (h->root.u.def.value | |
1380 | + sec->output_section->vma | |
1381 | + sec->output_offset); | |
676d3f02 NC |
1382 | #if 0 |
1383 | fprintf (stderr, "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n", | |
1384 | sec->name, h->root.root.string, h->root.u.def.value, sec->output_section->vma, sec->output_offset, relocation); | |
1385 | #endif | |
725b96f5 JL |
1386 | } |
1387 | else if (h->root.type == bfd_link_hash_undefweak) | |
676d3f02 NC |
1388 | { |
1389 | #if 0 | |
1390 | fprintf (stderr, "undefined: sec: %s, name: %s\n", | |
1391 | sec->name, h->root.root.string); | |
1392 | #endif | |
1393 | relocation = 0; | |
1394 | } | |
725b96f5 JL |
1395 | else |
1396 | { | |
1397 | if (! ((*info->callbacks->undefined_symbol) | |
1398 | (info, h->root.root.string, input_bfd, | |
1399 | input_section, rel->r_offset))) | |
1400 | return false; | |
676d3f02 NC |
1401 | #if 0 |
1402 | fprintf (stderr, "unknown: name: %s\n", h->root.root.string); | |
1403 | #endif | |
725b96f5 JL |
1404 | relocation = 0; |
1405 | } | |
1406 | } | |
1407 | ||
1408 | /* FIXME: We should use the addend, but the COFF relocations | |
1409 | don't. */ | |
de224d6a MM |
1410 | r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1411 | input_section, | |
1412 | contents, rel->r_offset, | |
1413 | relocation, rel->r_addend, | |
1414 | info, sec, h == NULL); | |
725b96f5 JL |
1415 | |
1416 | if (r != bfd_reloc_ok) | |
1417 | { | |
def31039 NC |
1418 | const char * name; |
1419 | const char * msg = (const char *)0; | |
8988d935 NC |
1420 | |
1421 | if (h != NULL) | |
1422 | name = h->root.root.string; | |
1423 | else | |
1424 | { | |
1425 | name = (bfd_elf_string_from_elf_section | |
1426 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1427 | if (name == NULL || *name == '\0') | |
1428 | name = bfd_section_name (input_bfd, sec); | |
1429 | } | |
1430 | ||
725b96f5 JL |
1431 | switch (r) |
1432 | { | |
725b96f5 | 1433 | case bfd_reloc_overflow: |
8988d935 NC |
1434 | if (! ((*info->callbacks->reloc_overflow) |
1435 | (info, name, howto->name, (bfd_vma) 0, | |
1436 | input_bfd, input_section, rel->r_offset))) | |
1437 | return false; | |
1438 | break; | |
1439 | ||
1440 | case bfd_reloc_undefined: | |
1441 | if (! ((*info->callbacks->undefined_symbol) | |
1442 | (info, name, input_bfd, input_section, | |
1443 | rel->r_offset))) | |
1444 | return false; | |
1445 | break; | |
1446 | ||
1447 | case bfd_reloc_outofrange: | |
1448 | msg = "internal error: out of range error"; | |
1449 | goto common_error; | |
1450 | ||
1451 | case bfd_reloc_notsupported: | |
1452 | msg = "internal error: unsupported relocation error"; | |
1453 | goto common_error; | |
1454 | ||
1455 | case bfd_reloc_dangerous: | |
def31039 NC |
1456 | msg = "internal error: dangerous relocation"; |
1457 | goto common_error; | |
1458 | ||
1459 | case bfd_reloc_other: | |
1460 | msg = "could not locate special linker symbol __gp"; | |
1461 | goto common_error; | |
1462 | ||
1463 | case bfd_reloc_continue: | |
1464 | msg = "could not locate special linker symbol __ep"; | |
8988d935 NC |
1465 | goto common_error; |
1466 | ||
676d3f02 NC |
1467 | case (bfd_reloc_dangerous + 1): |
1468 | msg = "could not locate special linker symbol __ctbp"; | |
1469 | goto common_error; | |
1470 | ||
8988d935 NC |
1471 | default: |
1472 | msg = "internal error: unknown error"; | |
1473 | /* fall through */ | |
1474 | ||
1475 | common_error: | |
1476 | if (!((*info->callbacks->warning) | |
1477 | (info, msg, name, input_bfd, input_section, | |
1478 | rel->r_offset))) | |
1479 | return false; | |
725b96f5 JL |
1480 | break; |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | return true; | |
1486 | } | |
01b49cb3 | 1487 | |
8988d935 | 1488 | /* Set the right machine number. */ |
8988d935 NC |
1489 | static boolean |
1490 | v850_elf_object_p (abfd) | |
1491 | bfd *abfd; | |
1492 | { | |
8bef8c30 | 1493 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) |
8988d935 NC |
1494 | { |
1495 | default: | |
8bef8c30 | 1496 | case E_V850_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, 0); break; |
8988d935 | 1497 | /* start-sanitize-v850e */ |
8bef8c30 | 1498 | case E_V850E_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); break; |
75172c0f | 1499 | case E_V850EA_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850ea); break; |
15d82b26 | 1500 | /* end-sanitize-v850e */ |
8988d935 NC |
1501 | } |
1502 | } | |
1503 | ||
8bef8c30 NC |
1504 | /* Store the machine number in the flags field. */ |
1505 | void | |
1506 | v850_elf_final_write_processing (abfd, linker) | |
1507 | bfd * abfd; | |
1508 | boolean linker; | |
1509 | { | |
1510 | unsigned long val; | |
1511 | ||
1512 | switch (bfd_get_mach (abfd)) | |
1513 | { | |
1514 | default: | |
1515 | case 0: val = E_V850_ARCH; break; | |
8988d935 | 1516 | /* start-sanitize-v850e */ |
15d82b26 | 1517 | case bfd_mach_v850e: val = E_V850E_ARCH; break; |
75172c0f | 1518 | case bfd_mach_v850ea: val = E_V850EA_ARCH; break; |
15d82b26 | 1519 | /* end-sanitize-v850e */ |
8bef8c30 NC |
1520 | } |
1521 | ||
1522 | elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH; | |
1523 | elf_elfheader (abfd)->e_flags |= val; | |
1524 | } | |
1525 | ||
1526 | /* Function to keep V850 specific file flags. */ | |
1527 | boolean | |
1528 | v850_elf_set_private_flags (abfd, flags) | |
1529 | bfd * abfd; | |
1530 | flagword flags; | |
1531 | { | |
1532 | BFD_ASSERT (!elf_flags_init (abfd) | |
1533 | || elf_elfheader (abfd)->e_flags == flags); | |
1534 | ||
1535 | elf_elfheader (abfd)->e_flags = flags; | |
1536 | elf_flags_init (abfd) = true; | |
1537 | return true; | |
1538 | } | |
1539 | ||
1540 | /* Copy backend specific data from one object module to another */ | |
1541 | boolean | |
1542 | v850_elf_copy_private_bfd_data (ibfd, obfd) | |
1543 | bfd * ibfd; | |
1544 | bfd * obfd; | |
1545 | { | |
1546 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1547 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1548 | return true; | |
1549 | ||
1550 | BFD_ASSERT (!elf_flags_init (obfd) | |
1551 | || (elf_elfheader (obfd)->e_flags | |
1552 | == elf_elfheader (ibfd)->e_flags)); | |
1553 | ||
1554 | elf_gp (obfd) = elf_gp (ibfd); | |
1555 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
1556 | elf_flags_init (obfd) = true; | |
1557 | return true; | |
1558 | } | |
1559 | ||
1560 | /* Merge backend specific data from an object file to the output | |
1561 | object file when linking. */ | |
1562 | boolean | |
1563 | v850_elf_merge_private_bfd_data (ibfd, obfd) | |
1564 | bfd * ibfd; | |
1565 | bfd * obfd; | |
1566 | { | |
8b6dcc1b NC |
1567 | flagword out_flags; |
1568 | flagword in_flags; | |
8bef8c30 NC |
1569 | |
1570 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1571 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1572 | return true; | |
1573 | ||
8b6dcc1b NC |
1574 | in_flags = elf_elfheader (ibfd)->e_flags; |
1575 | out_flags = elf_elfheader (obfd)->e_flags; | |
8bef8c30 NC |
1576 | |
1577 | if (! elf_flags_init (obfd)) | |
1578 | { | |
8b6dcc1b NC |
1579 | /* If the input is the default architecture then do not |
1580 | bother setting the flags for the output architecture, | |
1581 | instead allow future merges to do this. If no future | |
1582 | merges ever set these flags then they will retain their | |
1583 | unitialised values, which surprise surprise, correspond | |
1584 | to the default values. */ | |
1585 | if (bfd_get_arch_info (ibfd)->the_default) | |
1586 | return true; | |
1587 | ||
8bef8c30 | 1588 | elf_flags_init (obfd) = true; |
8b6dcc1b | 1589 | elf_elfheader (obfd)->e_flags = in_flags; |
8bef8c30 NC |
1590 | |
1591 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1592 | && bfd_get_arch_info (obfd)->the_default) | |
1593 | { | |
1594 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
1595 | } | |
1596 | ||
1597 | return true; | |
1598 | } | |
1599 | ||
1600 | /* Check flag compatibility. */ | |
8b6dcc1b | 1601 | if (in_flags == out_flags) |
8bef8c30 NC |
1602 | return true; |
1603 | ||
8b6dcc1b NC |
1604 | if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH) |
1605 | && (in_flags & EF_V850_ARCH) != E_V850_ARCH) | |
1606 | _bfd_error_handler ("%s: Architecture mismatch with previous modules", | |
1607 | bfd_get_filename (ibfd)); | |
8bef8c30 NC |
1608 | |
1609 | return true; | |
1610 | } | |
1611 | /* Display the flags field */ | |
1612 | ||
1613 | static boolean | |
1614 | v850_elf_print_private_bfd_data (abfd, ptr) | |
1615 | bfd * abfd; | |
1616 | PTR ptr; | |
1617 | { | |
1618 | FILE * file = (FILE *) ptr; | |
1619 | ||
1620 | BFD_ASSERT (abfd != NULL && ptr != NULL) | |
1621 | ||
1622 | fprintf (file, "private flags = %x", elf_elfheader (abfd)->e_flags); | |
1623 | ||
1624 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) | |
1625 | { | |
1626 | default: | |
98ab32a5 | 1627 | case E_V850_ARCH: fprintf (file, ": v850 architecture"); break; |
8bef8c30 | 1628 | /* start-sanitize-v850e */ |
15d82b26 | 1629 | case E_V850E_ARCH: fprintf (file, ": v850e architecture"); break; |
75172c0f | 1630 | case E_V850EA_ARCH: fprintf (file, ": v850ea architecture"); break; |
15d82b26 | 1631 | /* end-sanitize-v850e */ |
8bef8c30 NC |
1632 | } |
1633 | ||
1634 | fputc ('\n', file); | |
1635 | ||
1636 | return true; | |
1637 | } | |
22a9f052 NC |
1638 | |
1639 | /* V850 ELF uses four common sections. One is the usual one, and the | |
1640 | others are for (small) objects in one of the special data areas: | |
1641 | small, tiny and zero. All the objects are kept together, and then | |
1642 | referenced via the gp register, the ep register or the r0 register | |
1643 | respectively, which yields smaller, faster assembler code. This | |
1644 | approach is copied from elf32-mips.c. */ | |
1645 | ||
1646 | static asection v850_elf_scom_section; | |
1647 | static asymbol v850_elf_scom_symbol; | |
1648 | static asymbol * v850_elf_scom_symbol_ptr; | |
1649 | static asection v850_elf_tcom_section; | |
1650 | static asymbol v850_elf_tcom_symbol; | |
1651 | static asymbol * v850_elf_tcom_symbol_ptr; | |
1652 | static asection v850_elf_zcom_section; | |
1653 | static asymbol v850_elf_zcom_symbol; | |
1654 | static asymbol * v850_elf_zcom_symbol_ptr; | |
1655 | ||
1656 | ||
1657 | /* Given a BFD section, try to locate the corresponding ELF section | |
1658 | index. */ | |
1659 | ||
1660 | static boolean | |
1661 | v850_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
1662 | bfd * abfd; | |
1663 | Elf32_Internal_Shdr * hdr; | |
1664 | asection * sec; | |
1665 | int * retval; | |
1666 | { | |
1667 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
1668 | { | |
1669 | *retval = SHN_V850_SCOMMON; | |
1670 | return true; | |
1671 | } | |
1672 | if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0) | |
1673 | { | |
1674 | *retval = SHN_V850_TCOMMON; | |
1675 | return true; | |
1676 | } | |
1677 | if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0) | |
1678 | { | |
1679 | *retval = SHN_V850_ZCOMMON; | |
1680 | return true; | |
1681 | } | |
1682 | return false; | |
1683 | } | |
1684 | ||
1685 | /* Handle the special V850 section numbers that a symbol may use. */ | |
1686 | ||
1687 | static void | |
1688 | v850_elf_symbol_processing (abfd, asym) | |
1689 | bfd * abfd; | |
1690 | asymbol * asym; | |
1691 | { | |
1692 | elf_symbol_type * elfsym = (elf_symbol_type *) asym; | |
1693 | ||
1694 | switch (elfsym->internal_elf_sym.st_shndx) | |
1695 | { | |
1696 | case SHN_V850_SCOMMON: | |
1697 | if (v850_elf_scom_section.name == NULL) | |
1698 | { | |
1699 | /* Initialize the small common section. */ | |
1700 | v850_elf_scom_section.name = ".scommon"; | |
1701 | v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA; | |
1702 | v850_elf_scom_section.output_section = & v850_elf_scom_section; | |
1703 | v850_elf_scom_section.symbol = & v850_elf_scom_symbol; | |
1704 | v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr; | |
1705 | v850_elf_scom_symbol.name = ".scommon"; | |
1706 | v850_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
1707 | v850_elf_scom_symbol.section = & v850_elf_scom_section; | |
1708 | v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol; | |
1709 | } | |
1710 | asym->section = & v850_elf_scom_section; | |
1711 | asym->value = elfsym->internal_elf_sym.st_size; | |
1712 | break; | |
1713 | ||
1714 | case SHN_V850_TCOMMON: | |
1715 | if (v850_elf_tcom_section.name == NULL) | |
1716 | { | |
1717 | /* Initialize the tcommon section. */ | |
1718 | v850_elf_tcom_section.name = ".tcommon"; | |
1719 | v850_elf_tcom_section.flags = SEC_IS_COMMON; | |
1720 | v850_elf_tcom_section.output_section = & v850_elf_tcom_section; | |
1721 | v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol; | |
1722 | v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr; | |
1723 | v850_elf_tcom_symbol.name = ".tcommon"; | |
1724 | v850_elf_tcom_symbol.flags = BSF_SECTION_SYM; | |
1725 | v850_elf_tcom_symbol.section = & v850_elf_tcom_section; | |
1726 | v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol; | |
1727 | } | |
1728 | asym->section = & v850_elf_tcom_section; | |
1729 | asym->value = elfsym->internal_elf_sym.st_size; | |
1730 | break; | |
1731 | ||
1732 | case SHN_V850_ZCOMMON: | |
1733 | if (v850_elf_zcom_section.name == NULL) | |
1734 | { | |
1735 | /* Initialize the zcommon section. */ | |
1736 | v850_elf_zcom_section.name = ".zcommon"; | |
1737 | v850_elf_zcom_section.flags = SEC_IS_COMMON; | |
1738 | v850_elf_zcom_section.output_section = & v850_elf_zcom_section; | |
1739 | v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol; | |
1740 | v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr; | |
1741 | v850_elf_zcom_symbol.name = ".zcommon"; | |
1742 | v850_elf_zcom_symbol.flags = BSF_SECTION_SYM; | |
1743 | v850_elf_zcom_symbol.section = & v850_elf_zcom_section; | |
1744 | v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol; | |
1745 | } | |
1746 | asym->section = & v850_elf_zcom_section; | |
1747 | asym->value = elfsym->internal_elf_sym.st_size; | |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | /* Hook called by the linker routine which adds symbols from an object | |
1753 | file. We must handle the special MIPS section numbers here. */ | |
1754 | ||
1755 | /*ARGSUSED*/ | |
1756 | static boolean | |
1757 | v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
1758 | bfd * abfd; | |
1759 | struct bfd_link_info * info; | |
1760 | const Elf_Internal_Sym * sym; | |
1761 | const char ** namep; | |
1762 | flagword * flagsp; | |
1763 | asection ** secp; | |
1764 | bfd_vma * valp; | |
1765 | { | |
1766 | switch (sym->st_shndx) | |
1767 | { | |
1768 | case SHN_V850_SCOMMON: | |
1769 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
1770 | (*secp)->flags |= SEC_IS_COMMON; | |
1771 | *valp = sym->st_size; | |
1772 | break; | |
1773 | ||
1774 | case SHN_V850_TCOMMON: | |
1775 | *secp = bfd_make_section_old_way (abfd, ".tcommon"); | |
1776 | (*secp)->flags |= SEC_IS_COMMON; | |
1777 | *valp = sym->st_size; | |
1778 | break; | |
1779 | ||
1780 | case SHN_V850_ZCOMMON: | |
1781 | *secp = bfd_make_section_old_way (abfd, ".zcommon"); | |
1782 | (*secp)->flags |= SEC_IS_COMMON; | |
1783 | *valp = sym->st_size; | |
1784 | break; | |
1785 | } | |
1786 | ||
1787 | return true; | |
1788 | } | |
1789 | ||
1790 | /*ARGSIGNORED*/ | |
1791 | static boolean | |
1792 | v850_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
1793 | bfd * abfd; | |
1794 | struct bfd_link_info * info; | |
1795 | const char * name; | |
1796 | Elf_Internal_Sym * sym; | |
1797 | asection * input_sec; | |
1798 | { | |
1799 | /* If we see a common symbol, which implies a relocatable link, then | |
1800 | if a symbol was in a special common section in an input file, mark | |
1801 | it as a special common in the output file. */ | |
1802 | ||
1803 | if (sym->st_shndx == SHN_COMMON) | |
1804 | { | |
1805 | if (strcmp (input_sec->name, ".scommon") == 0) | |
1806 | sym->st_shndx = SHN_V850_SCOMMON; | |
1807 | else if (strcmp (input_sec->name, ".tcommon") == 0) | |
1808 | sym->st_shndx = SHN_V850_TCOMMON; | |
1809 | else if (strcmp (input_sec->name, ".zcommon") == 0) | |
1810 | sym->st_shndx = SHN_V850_ZCOMMON; | |
1811 | } | |
1812 | ||
1813 | return true; | |
1814 | } | |
1815 | ||
1816 | static boolean | |
1817 | v850_elf_section_from_shdr (abfd, hdr, name) | |
1818 | bfd * abfd; | |
1819 | Elf_Internal_Shdr * hdr; | |
1820 | char * name; | |
1821 | { | |
1822 | /* There ought to be a place to keep ELF backend specific flags, but | |
1823 | at the moment there isn't one. We just keep track of the | |
1824 | sections by their name, instead. */ | |
1825 | ||
1826 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1827 | return false; | |
1828 | ||
1829 | switch (hdr->sh_type) | |
1830 | { | |
1831 | case SHT_V850_SCOMMON: | |
1832 | case SHT_V850_TCOMMON: | |
1833 | case SHT_V850_ZCOMMON: | |
1834 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
1835 | (bfd_get_section_flags (abfd, | |
1836 | hdr->bfd_section) | |
1837 | | SEC_IS_COMMON))) | |
1838 | return false; | |
1839 | } | |
1840 | ||
1841 | return true; | |
1842 | } | |
1843 | ||
1844 | /* Set the correct type for a V850 ELF section. We do this by the | |
1845 | section name, which is a hack, but ought to work. */ | |
1846 | static boolean | |
1847 | v850_elf_fake_sections (abfd, hdr, sec) | |
1848 | bfd * abfd; | |
1849 | Elf32_Internal_Shdr * hdr; | |
1850 | asection * sec; | |
1851 | { | |
1852 | register const char * name; | |
1853 | ||
1854 | name = bfd_get_section_name (abfd, sec); | |
1855 | ||
1856 | if (strcmp (name, ".scommon") == 0) | |
1857 | { | |
1858 | hdr->sh_type = SHT_V850_SCOMMON; | |
1859 | } | |
1860 | else if (strcmp (name, ".tcommon") == 0) | |
1861 | { | |
1862 | hdr->sh_type = SHT_V850_TCOMMON; | |
1863 | } | |
1864 | else if (strcmp (name, ".zcommon") == 0) | |
1865 | hdr->sh_type = SHT_V850_ZCOMMON; | |
1866 | ||
1867 | return true; | |
1868 | } | |
1869 | ||
1870 | ||
8bef8c30 NC |
1871 | \f |
1872 | #define TARGET_LITTLE_SYM bfd_elf32_v850_vec | |
1873 | #define TARGET_LITTLE_NAME "elf32-v850" | |
1874 | #define ELF_ARCH bfd_arch_v850 | |
1875 | #define ELF_MACHINE_CODE EM_CYGNUS_V850 | |
de224d6a MM |
1876 | #define ELF_MAXPAGESIZE 0x1000 |
1877 | ||
1878 | #define elf_info_to_howto 0 | |
1879 | #define elf_info_to_howto_rel v850_elf_info_to_howto_rel | |
22a9f052 | 1880 | |
de224d6a MM |
1881 | #define elf_backend_check_relocs v850_elf_check_relocs |
1882 | #define elf_backend_relocate_section v850_elf_relocate_section | |
8988d935 | 1883 | #define elf_backend_object_p v850_elf_object_p |
8bef8c30 | 1884 | #define elf_backend_final_write_processing v850_elf_final_write_processing |
22a9f052 NC |
1885 | #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section |
1886 | #define elf_backend_symbol_processing v850_elf_symbol_processing | |
1887 | #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook | |
1888 | #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook | |
1889 | #define elf_backend_section_from_shdr v850_elf_section_from_shdr | |
1890 | #define elf_backend_fake_sections v850_elf_fake_sections | |
1891 | ||
8988d935 | 1892 | #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name |
de224d6a | 1893 | #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup |
8bef8c30 NC |
1894 | #define bfd_elf32_bfd_copy_private_bfd_data v850_elf_copy_private_bfd_data |
1895 | #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data | |
1896 | #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags | |
1897 | #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data | |
de224d6a MM |
1898 | |
1899 | #define elf_symbol_leading_char '_' | |
1336da39 | 1900 | |
01b49cb3 | 1901 | #include "elf32-target.h" |