Commit | Line | Data |
---|---|---|
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 *)); |
197de3ba CM |
40 | static void v850_elf_info_to_howto_rela |
41 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
de224d6a | 42 | static bfd_reloc_status_type v850_elf_reloc |
e73b6ae6 | 43 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
c84c3b96 NC |
44 | static boolean v850_elf_is_local_label_name |
45 | PARAMS ((bfd *, const char *)); | |
46 | static boolean v850_elf_relocate_section | |
47 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
48 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
49 | static bfd_reloc_status_type v850_elf_perform_relocation | |
50 | PARAMS ((bfd *, int, bfd_vma, bfd_byte *)); | |
51 | static boolean v850_elf_check_relocs | |
52 | PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *)); | |
53 | static void remember_hi16s_reloc | |
54 | PARAMS ((bfd_vma, bfd_byte *)); | |
55 | static bfd_byte * find_remembered_hi16s_reloc | |
56 | PARAMS ((bfd_vma addend)); | |
57 | static bfd_reloc_status_type v850_elf_final_link_relocate | |
58 | PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, bfd_vma, | |
59 | bfd_vma, bfd_vma, struct bfd_link_info *, asection *, int)); | |
60 | static boolean v850_elf_object_p | |
61 | PARAMS ((bfd *)); | |
62 | static boolean v850_elf_fake_sections | |
63 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); | |
64 | static void v850_elf_final_write_processing | |
65 | PARAMS ((bfd *, boolean)); | |
66 | static boolean v850_elf_set_private_flags | |
67 | PARAMS ((bfd *, flagword)); | |
68 | static boolean v850_elf_copy_private_bfd_data | |
69 | PARAMS ((bfd *, bfd *)); | |
70 | static boolean v850_elf_merge_private_bfd_data | |
71 | PARAMS ((bfd *, bfd *)); | |
72 | static boolean v850_elf_print_private_bfd_data | |
73 | PARAMS ((bfd *, PTR)); | |
74 | static boolean v850_elf_section_from_bfd_section | |
75 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *)); | |
76 | static void v850_elf_symbol_processing | |
77 | PARAMS ((bfd *, asymbol *)); | |
78 | static boolean v850_elf_add_symbol_hook | |
79 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
80 | const char **, flagword *, asection **, bfd_vma *)); | |
81 | static boolean v850_elf_link_output_symbol_hook | |
82 | PARAMS ((bfd *, struct bfd_link_info *, const char *, | |
83 | Elf_Internal_Sym *, asection *)); | |
84 | static boolean v850_elf_section_from_shdr | |
85 | PARAMS ((bfd *, Elf_Internal_Shdr *, char *)); | |
01b49cb3 | 86 | |
def31039 NC |
87 | /* Note: It is REQUIRED that the 'type' value of each entry in this array |
88 | match the index of the entry in the array. */ | |
de224d6a | 89 | static reloc_howto_type v850_elf_howto_table[] = |
01b49cb3 C |
90 | { |
91 | /* This reloc does nothing. */ | |
de224d6a MM |
92 | HOWTO (R_V850_NONE, /* type */ |
93 | 0, /* rightshift */ | |
94 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
95 | 32, /* bitsize */ | |
96 | false, /* pc_relative */ | |
97 | 0, /* bitpos */ | |
98 | complain_overflow_bitfield, /* complain_on_overflow */ | |
99 | bfd_elf_generic_reloc, /* special_function */ | |
100 | "R_V850_NONE", /* name */ | |
101 | false, /* partial_inplace */ | |
102 | 0, /* src_mask */ | |
103 | 0, /* dst_mask */ | |
104 | false), /* pcrel_offset */ | |
01b49cb3 C |
105 | |
106 | /* A PC relative 9 bit branch. */ | |
de224d6a MM |
107 | HOWTO (R_V850_9_PCREL, /* type */ |
108 | 2, /* rightshift */ | |
109 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
110 | 26, /* bitsize */ | |
111 | true, /* pc_relative */ | |
112 | 0, /* bitpos */ | |
113 | complain_overflow_bitfield, /* complain_on_overflow */ | |
114 | v850_elf_reloc, /* special_function */ | |
115 | "R_V850_9_PCREL", /* name */ | |
116 | false, /* partial_inplace */ | |
117 | 0x00ffffff, /* src_mask */ | |
118 | 0x00ffffff, /* dst_mask */ | |
119 | true), /* pcrel_offset */ | |
01b49cb3 C |
120 | |
121 | /* A PC relative 22 bit branch. */ | |
de224d6a MM |
122 | HOWTO (R_V850_22_PCREL, /* type */ |
123 | 2, /* rightshift */ | |
124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
125 | 22, /* bitsize */ | |
126 | true, /* pc_relative */ | |
127 | 7, /* bitpos */ | |
128 | complain_overflow_signed, /* complain_on_overflow */ | |
129 | v850_elf_reloc, /* special_function */ | |
130 | "R_V850_22_PCREL", /* name */ | |
131 | false, /* partial_inplace */ | |
132 | 0x07ffff80, /* src_mask */ | |
133 | 0x07ffff80, /* dst_mask */ | |
134 | true), /* pcrel_offset */ | |
01b49cb3 C |
135 | |
136 | /* High 16 bits of symbol value. */ | |
de224d6a MM |
137 | HOWTO (R_V850_HI16_S, /* type */ |
138 | 0, /* rightshift */ | |
139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
140 | 16, /* bitsize */ | |
141 | false, /* pc_relative */ | |
142 | 0, /* bitpos */ | |
143 | complain_overflow_dont, /* complain_on_overflow */ | |
144 | v850_elf_reloc, /* special_function */ | |
145 | "R_V850_HI16_S", /* name */ | |
146 | true, /* partial_inplace */ | |
147 | 0xffff, /* src_mask */ | |
148 | 0xffff, /* dst_mask */ | |
149 | false), /* pcrel_offset */ | |
01b49cb3 C |
150 | |
151 | /* High 16 bits of symbol value. */ | |
de224d6a MM |
152 | HOWTO (R_V850_HI16, /* type */ |
153 | 0, /* rightshift */ | |
154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
155 | 16, /* bitsize */ | |
156 | false, /* pc_relative */ | |
157 | 0, /* bitpos */ | |
158 | complain_overflow_dont, /* complain_on_overflow */ | |
159 | v850_elf_reloc, /* special_function */ | |
160 | "R_V850_HI16", /* name */ | |
161 | true, /* partial_inplace */ | |
162 | 0xffff, /* src_mask */ | |
163 | 0xffff, /* dst_mask */ | |
164 | false), /* pcrel_offset */ | |
01b49cb3 C |
165 | |
166 | /* Low 16 bits of symbol value. */ | |
de224d6a MM |
167 | HOWTO (R_V850_LO16, /* type */ |
168 | 0, /* rightshift */ | |
169 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
170 | 16, /* bitsize */ | |
171 | false, /* pc_relative */ | |
172 | 0, /* bitpos */ | |
173 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 174 | v850_elf_reloc, /* special_function */ |
de224d6a MM |
175 | "R_V850_LO16", /* name */ |
176 | true, /* partial_inplace */ | |
177 | 0xffff, /* src_mask */ | |
178 | 0xffff, /* dst_mask */ | |
179 | false), /* pcrel_offset */ | |
237b5c4c JL |
180 | |
181 | /* Simple 32bit reloc. */ | |
de224d6a MM |
182 | HOWTO (R_V850_32, /* type */ |
183 | 0, /* rightshift */ | |
184 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
185 | 32, /* bitsize */ | |
186 | false, /* pc_relative */ | |
187 | 0, /* bitpos */ | |
188 | complain_overflow_dont, /* complain_on_overflow */ | |
22a9f052 | 189 | v850_elf_reloc, /* special_function */ |
de224d6a MM |
190 | "R_V850_32", /* name */ |
191 | true, /* partial_inplace */ | |
192 | 0xffffffff, /* src_mask */ | |
193 | 0xffffffff, /* dst_mask */ | |
194 | false), /* pcrel_offset */ | |
237b5c4c JL |
195 | |
196 | /* Simple 16bit reloc. */ | |
de224d6a MM |
197 | HOWTO (R_V850_16, /* type */ |
198 | 0, /* rightshift */ | |
199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 16, /* bitsize */ | |
201 | false, /* pc_relative */ | |
202 | 0, /* bitpos */ | |
203 | complain_overflow_dont, /* complain_on_overflow */ | |
204 | bfd_elf_generic_reloc, /* special_function */ | |
205 | "R_V850_16", /* name */ | |
206 | true, /* partial_inplace */ | |
207 | 0xffff, /* src_mask */ | |
208 | 0xffff, /* dst_mask */ | |
209 | false), /* pcrel_offset */ | |
afaed5e9 MM |
210 | |
211 | /* Simple 8bit reloc. */ | |
de224d6a MM |
212 | HOWTO (R_V850_8, /* type */ |
213 | 0, /* rightshift */ | |
214 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 8, /* bitsize */ | |
216 | false, /* pc_relative */ | |
217 | 0, /* bitpos */ | |
218 | complain_overflow_dont, /* complain_on_overflow */ | |
219 | bfd_elf_generic_reloc, /* special_function */ | |
220 | "R_V850_8", /* name */ | |
221 | true, /* partial_inplace */ | |
222 | 0xff, /* src_mask */ | |
223 | 0xff, /* dst_mask */ | |
224 | false), /* pcrel_offset */ | |
b6d08fce | 225 | |
def31039 NC |
226 | /* 16 bit offset from the short data area pointer. */ |
227 | HOWTO (R_V850_SDA_16_16_OFFSET, /* type */ | |
de224d6a MM |
228 | 0, /* rightshift */ |
229 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
230 | 16, /* bitsize */ | |
231 | false, /* pc_relative */ | |
232 | 0, /* bitpos */ | |
233 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 234 | v850_elf_reloc, /* special_function */ |
def31039 NC |
235 | "R_V850_SDA_16_16_OFFSET", /* name */ |
236 | false, /* partial_inplace */ | |
de224d6a MM |
237 | 0xffff, /* src_mask */ |
238 | 0xffff, /* dst_mask */ | |
239 | false), /* pcrel_offset */ | |
b6d08fce | 240 | |
def31039 NC |
241 | /* 15 bit offset from the short data area pointer. */ |
242 | HOWTO (R_V850_SDA_15_16_OFFSET, /* type */ | |
243 | 1, /* rightshift */ | |
244 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
245 | 16, /* bitsize */ | |
246 | false, /* pc_relative */ | |
247 | 1, /* bitpos */ | |
248 | complain_overflow_dont, /* complain_on_overflow */ | |
249 | v850_elf_reloc, /* special_function */ | |
250 | "R_V850_SDA_15_16_OFFSET", /* name */ | |
251 | false, /* partial_inplace */ | |
252 | 0xfffe, /* src_mask */ | |
253 | 0xfffe, /* dst_mask */ | |
254 | false), /* pcrel_offset */ | |
255 | ||
256 | /* 16 bit offset from the zero data area pointer. */ | |
257 | HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */ | |
de224d6a MM |
258 | 0, /* rightshift */ |
259 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
260 | 16, /* bitsize */ | |
261 | false, /* pc_relative */ | |
262 | 0, /* bitpos */ | |
263 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 264 | v850_elf_reloc, /* special_function */ |
def31039 NC |
265 | "R_V850_ZDA_16_16_OFFSET", /* name */ |
266 | false, /* partial_inplace */ | |
de224d6a MM |
267 | 0xffff, /* src_mask */ |
268 | 0xffff, /* dst_mask */ | |
269 | false), /* pcrel_offset */ | |
b6d08fce | 270 | |
def31039 NC |
271 | /* 15 bit offset from the zero data area pointer. */ |
272 | HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */ | |
273 | 1, /* rightshift */ | |
274 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
275 | 16, /* bitsize */ | |
276 | false, /* pc_relative */ | |
277 | 1, /* bitpos */ | |
278 | complain_overflow_dont, /* complain_on_overflow */ | |
279 | v850_elf_reloc, /* special_function */ | |
280 | "R_V850_ZDA_15_16_OFFSET", /* name */ | |
281 | false, /* partial_inplace */ | |
282 | 0xfffe, /* src_mask */ | |
283 | 0xfffe, /* dst_mask */ | |
284 | false), /* pcrel_offset */ | |
285 | ||
286 | /* 6 bit offset from the tiny data area pointer. */ | |
287 | HOWTO (R_V850_TDA_6_8_OFFSET, /* type */ | |
288 | 2, /* rightshift */ | |
289 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
290 | 8, /* bitsize */ | |
291 | false, /* pc_relative */ | |
292 | 1, /* bitpos */ | |
293 | complain_overflow_dont, /* complain_on_overflow */ | |
294 | v850_elf_reloc, /* special_function */ | |
295 | "R_V850_TDA_6_8_OFFSET", /* name */ | |
296 | false, /* partial_inplace */ | |
297 | 0x7e, /* src_mask */ | |
298 | 0x7e, /* dst_mask */ | |
299 | false), /* pcrel_offset */ | |
300 | ||
301 | /* 8 bit offset from the tiny data area pointer. */ | |
302 | HOWTO (R_V850_TDA_7_8_OFFSET, /* type */ | |
303 | 1, /* rightshift */ | |
304 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
305 | 8, /* bitsize */ | |
306 | false, /* pc_relative */ | |
307 | 0, /* bitpos */ | |
308 | complain_overflow_dont, /* complain_on_overflow */ | |
309 | v850_elf_reloc, /* special_function */ | |
310 | "R_V850_TDA_7_8_OFFSET", /* name */ | |
311 | false, /* partial_inplace */ | |
312 | 0x7f, /* src_mask */ | |
313 | 0x7f, /* dst_mask */ | |
314 | false), /* pcrel_offset */ | |
315 | ||
316 | /* 7 bit offset from the tiny data area pointer. */ | |
317 | HOWTO (R_V850_TDA_7_7_OFFSET, /* type */ | |
318 | 0, /* rightshift */ | |
319 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
320 | 7, /* 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_7_7_OFFSET", /* name */ | |
326 | false, /* partial_inplace */ | |
327 | 0x7f, /* src_mask */ | |
328 | 0x7f, /* dst_mask */ | |
329 | false), /* pcrel_offset */ | |
330 | ||
5bb28764 NC |
331 | /* 16 bit offset from the tiny data area pointer! */ |
332 | HOWTO (R_V850_TDA_16_16_OFFSET, /* type */ | |
333 | 0, /* rightshift */ | |
334 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
335 | 16, /* 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_16_16_OFFSET", /* name */ | |
341 | false, /* partial_inplace */ | |
342 | 0xffff, /* src_mask */ | |
343 | 0xfff, /* dst_mask */ | |
344 | false), /* pcrel_offset */ | |
345 | ||
def31039 NC |
346 | /* start-sanitize-v850e */ |
347 | ||
348 | /* 5 bit offset from the tiny data area pointer. */ | |
349 | HOWTO (R_V850_TDA_4_5_OFFSET, /* type */ | |
350 | 1, /* rightshift */ | |
351 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
352 | 5, /* bitsize */ | |
353 | false, /* pc_relative */ | |
354 | 0, /* bitpos */ | |
355 | complain_overflow_dont, /* complain_on_overflow */ | |
356 | v850_elf_reloc, /* special_function */ | |
357 | "R_V850_TDA_4_5_OFFSET", /* name */ | |
358 | false, /* partial_inplace */ | |
359 | 0x0f, /* src_mask */ | |
360 | 0x0f, /* dst_mask */ | |
361 | false), /* pcrel_offset */ | |
362 | ||
363 | /* 4 bit offset from the tiny data area pointer. */ | |
364 | HOWTO (R_V850_TDA_4_4_OFFSET, /* type */ | |
365 | 0, /* rightshift */ | |
366 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
367 | 4, /* bitsize */ | |
368 | false, /* pc_relative */ | |
369 | 0, /* bitpos */ | |
370 | complain_overflow_dont, /* complain_on_overflow */ | |
371 | v850_elf_reloc, /* special_function */ | |
372 | "R_V850_TDA_4_4_OFFSET", /* name */ | |
373 | false, /* partial_inplace */ | |
374 | 0x0f, /* src_mask */ | |
375 | 0x0f, /* dst_mask */ | |
376 | false), /* pcrel_offset */ | |
377 | ||
378 | /* 16 bit offset from the short data area pointer. */ | |
379 | HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */ | |
de224d6a MM |
380 | 0, /* rightshift */ |
381 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
def31039 | 382 | 16, /* bitsize */ |
de224d6a MM |
383 | false, /* pc_relative */ |
384 | 0, /* bitpos */ | |
385 | complain_overflow_dont, /* complain_on_overflow */ | |
8988d935 | 386 | v850_elf_reloc, /* special_function */ |
def31039 NC |
387 | "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */ |
388 | false, /* partial_inplace */ | |
389 | 0xfffe0020, /* src_mask */ | |
390 | 0xfffe0020, /* dst_mask */ | |
de224d6a | 391 | false), /* pcrel_offset */ |
b6d08fce | 392 | |
def31039 NC |
393 | /* 16 bit offset from the zero data area pointer. */ |
394 | HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
398 | false, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_dont, /* complain_on_overflow */ | |
401 | v850_elf_reloc, /* special_function */ | |
402 | "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */ | |
403 | false, /* partial_inplace */ | |
404 | 0xfffe0020, /* src_mask */ | |
405 | 0xfffe0020, /* dst_mask */ | |
406 | false), /* pcrel_offset */ | |
407 | ||
9420c20a NC |
408 | /* 6 bit offset from the call table base pointer. */ |
409 | HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 7, /* bitsize */ | |
413 | false, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_dont, /* complain_on_overflow */ | |
416 | v850_elf_reloc, /* special_function */ | |
417 | "R_V850_CALLT_6_7_OFFSET", /* name */ | |
418 | false, /* partial_inplace */ | |
419 | 0x3f, /* src_mask */ | |
420 | 0x3f, /* dst_mask */ | |
421 | false), /* pcrel_offset */ | |
422 | ||
423 | /* 16 bit offset from the call table base pointer. */ | |
424 | HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 16, /* bitsize */ | |
428 | false, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_dont, /* complain_on_overflow */ | |
431 | v850_elf_reloc, /* special_function */ | |
432 | "R_V850_CALLT_16_16_OFFSET", /* name */ | |
433 | false, /* partial_inplace */ | |
434 | 0xffff, /* src_mask */ | |
435 | 0xffff, /* dst_mask */ | |
436 | false), /* pcrel_offset */ | |
437 | ||
def31039 | 438 | /* end-sanitize-v850e */ |
01b49cb3 C |
439 | }; |
440 | ||
441 | /* Map BFD reloc types to V850 ELF reloc types. */ | |
442 | ||
de224d6a | 443 | struct v850_elf_reloc_map |
01b49cb3 C |
444 | { |
445 | unsigned char bfd_reloc_val; | |
446 | unsigned char elf_reloc_val; | |
447 | }; | |
448 | ||
de224d6a | 449 | static const struct v850_elf_reloc_map v850_elf_reloc_map[] = |
01b49cb3 | 450 | { |
def31039 NC |
451 | { BFD_RELOC_NONE, R_V850_NONE }, |
452 | { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL }, | |
def31039 NC |
453 | { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL }, |
454 | { BFD_RELOC_HI16_S, R_V850_HI16_S }, | |
455 | { BFD_RELOC_HI16, R_V850_HI16 }, | |
456 | { BFD_RELOC_LO16, R_V850_LO16 }, | |
457 | { BFD_RELOC_32, R_V850_32 }, | |
458 | { BFD_RELOC_16, R_V850_16 }, | |
459 | { BFD_RELOC_8, R_V850_8 }, | |
460 | { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET }, | |
461 | { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, | |
462 | { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, | |
463 | { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, | |
9420c20a NC |
464 | { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, |
465 | { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, | |
466 | { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, | |
5bb28764 | 467 | { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, |
def31039 | 468 | /* start-sanitize-v850e */ |
9420c20a NC |
469 | { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, |
470 | { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, | |
def31039 NC |
471 | { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, |
472 | { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, | |
9420c20a NC |
473 | { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, |
474 | { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, | |
def31039 | 475 | /* end-sanitize-v850e */ |
01b49cb3 C |
476 | }; |
477 | ||
de224d6a MM |
478 | \f |
479 | /* Map a bfd relocation into the appropriate howto structure */ | |
01b49cb3 | 480 | static reloc_howto_type * |
de224d6a | 481 | v850_elf_reloc_type_lookup (abfd, code) |
9420c20a NC |
482 | bfd * abfd; |
483 | bfd_reloc_code_real_type code; | |
01b49cb3 C |
484 | { |
485 | unsigned int i; | |
486 | ||
487 | for (i = 0; | |
de224d6a | 488 | i < sizeof (v850_elf_reloc_map) / sizeof (struct v850_elf_reloc_map); |
01b49cb3 C |
489 | i++) |
490 | { | |
de224d6a | 491 | if (v850_elf_reloc_map[i].bfd_reloc_val == code) |
def31039 NC |
492 | { |
493 | BFD_ASSERT (v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val].type == v850_elf_reloc_map[i].elf_reloc_val); | |
494 | ||
495 | return & v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val]; | |
496 | } | |
01b49cb3 C |
497 | } |
498 | ||
499 | return NULL; | |
500 | } | |
501 | ||
de224d6a | 502 | \f |
01b49cb3 | 503 | /* Set the howto pointer for an V850 ELF reloc. */ |
01b49cb3 | 504 | static void |
de224d6a | 505 | v850_elf_info_to_howto_rel (abfd, cache_ptr, dst) |
9420c20a NC |
506 | bfd * abfd; |
507 | arelent * cache_ptr; | |
508 | Elf32_Internal_Rel * dst; | |
01b49cb3 C |
509 | { |
510 | unsigned int r_type; | |
511 | ||
512 | r_type = ELF32_R_TYPE (dst->r_info); | |
513 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
de224d6a MM |
514 | cache_ptr->howto = &v850_elf_howto_table[r_type]; |
515 | } | |
516 | ||
197de3ba CM |
517 | /* Set the howto pointer for a V850 ELF reloc (type RELA). */ |
518 | static void | |
519 | v850_elf_info_to_howto_rela (abfd, cache_ptr, dst) | |
520 | bfd * abfd; | |
521 | arelent * cache_ptr; | |
522 | Elf32_Internal_Rela *dst; | |
523 | { | |
524 | unsigned int r_type; | |
525 | ||
526 | r_type = ELF32_R_TYPE (dst->r_info); | |
527 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
528 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
529 | } | |
530 | ||
de224d6a MM |
531 | \f |
532 | /* Look through the relocs for a section during the first phase, and | |
533 | allocate space in the global offset table or procedure linkage | |
534 | table. */ | |
535 | ||
536 | static boolean | |
537 | v850_elf_check_relocs (abfd, info, sec, relocs) | |
9420c20a NC |
538 | bfd * abfd; |
539 | struct bfd_link_info * info; | |
540 | asection * sec; | |
541 | const Elf_Internal_Rela * relocs; | |
de224d6a MM |
542 | { |
543 | boolean ret = true; | |
544 | bfd *dynobj; | |
545 | Elf_Internal_Shdr *symtab_hdr; | |
546 | struct elf_link_hash_entry **sym_hashes; | |
547 | const Elf_Internal_Rela *rel; | |
548 | const Elf_Internal_Rela *rel_end; | |
549 | asection *sreloc; | |
22a9f052 | 550 | enum v850_reloc_type r_type; |
de224d6a MM |
551 | int other = 0; |
552 | const char *common = (const char *)0; | |
553 | ||
554 | if (info->relocateable) | |
555 | return true; | |
556 | ||
557 | #ifdef DEBUG | |
558 | fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n", | |
559 | bfd_get_section_name (abfd, sec), | |
560 | bfd_get_filename (abfd)); | |
561 | #endif | |
562 | ||
563 | dynobj = elf_hash_table (info)->dynobj; | |
564 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
565 | sym_hashes = elf_sym_hashes (abfd); | |
566 | sreloc = NULL; | |
567 | ||
568 | rel_end = relocs + sec->reloc_count; | |
569 | for (rel = relocs; rel < rel_end; rel++) | |
570 | { | |
571 | unsigned long r_symndx; | |
572 | struct elf_link_hash_entry *h; | |
573 | ||
574 | r_symndx = ELF32_R_SYM (rel->r_info); | |
575 | if (r_symndx < symtab_hdr->sh_info) | |
576 | h = NULL; | |
577 | else | |
578 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
579 | ||
22a9f052 | 580 | r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info); |
de224d6a MM |
581 | switch (r_type) |
582 | { | |
583 | default: | |
584 | case R_V850_NONE: | |
585 | case R_V850_9_PCREL: | |
586 | case R_V850_22_PCREL: | |
587 | case R_V850_HI16_S: | |
588 | case R_V850_HI16: | |
589 | case R_V850_LO16: | |
590 | case R_V850_32: | |
591 | case R_V850_16: | |
592 | case R_V850_8: | |
9420c20a NC |
593 | /* start-sanitize-v850e */ |
594 | case R_V850_CALLT_6_7_OFFSET: | |
595 | case R_V850_CALLT_16_16_OFFSET: | |
596 | /* end-sanitize-v850e */ | |
de224d6a MM |
597 | break; |
598 | ||
def31039 NC |
599 | /* start-sanitize-v850e */ |
600 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
601 | /* end-sanitize-v850e */ | |
602 | case R_V850_SDA_16_16_OFFSET: | |
603 | case R_V850_SDA_15_16_OFFSET: | |
de224d6a MM |
604 | other = V850_OTHER_SDA; |
605 | common = ".scommon"; | |
606 | goto small_data_common; | |
def31039 NC |
607 | |
608 | /* start-sanitize-v850e */ | |
609 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
610 | /* end-sanitize-v850e */ | |
611 | case R_V850_ZDA_16_16_OFFSET: | |
612 | case R_V850_ZDA_15_16_OFFSET: | |
de224d6a MM |
613 | other = V850_OTHER_ZDA; |
614 | common = ".zcommon"; | |
615 | goto small_data_common; | |
def31039 NC |
616 | |
617 | /* start-sanitize-v850e */ | |
618 | case R_V850_TDA_4_5_OFFSET: | |
619 | case R_V850_TDA_4_4_OFFSET: | |
2cf9a0d0 | 620 | /* end-sanitize-v850e */ |
def31039 NC |
621 | case R_V850_TDA_6_8_OFFSET: |
622 | case R_V850_TDA_7_8_OFFSET: | |
623 | case R_V850_TDA_7_7_OFFSET: | |
5bb28764 | 624 | case R_V850_TDA_16_16_OFFSET: |
de224d6a MM |
625 | other = V850_OTHER_TDA; |
626 | common = ".tcommon"; | |
627 | /* fall through */ | |
628 | ||
629 | #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA) | |
630 | ||
631 | small_data_common: | |
632 | if (h) | |
633 | { | |
634 | h->other |= other; /* flag which type of relocation was used */ | |
635 | if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK) | |
636 | && (h->other & V850_OTHER_ERROR) == 0) | |
637 | { | |
55e6f0bf | 638 | const char * msg; |
53d3ce37 TT |
639 | static char buff[200]; /* XXX */ |
640 | ||
de224d6a MM |
641 | switch (h->other & V850_OTHER_MASK) |
642 | { | |
643 | default: | |
53d3ce37 | 644 | msg = _("Variable `%s' cannot occupy in multiple small data regions"); |
de224d6a MM |
645 | break; |
646 | case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA: | |
53d3ce37 | 647 | msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions"); |
de224d6a MM |
648 | break; |
649 | case V850_OTHER_SDA | V850_OTHER_ZDA: | |
53d3ce37 | 650 | msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously"); |
de224d6a MM |
651 | break; |
652 | case V850_OTHER_SDA | V850_OTHER_TDA: | |
53d3ce37 | 653 | msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously"); |
de224d6a MM |
654 | break; |
655 | case V850_OTHER_ZDA | V850_OTHER_TDA: | |
53d3ce37 | 656 | msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously"); |
de224d6a MM |
657 | break; |
658 | } | |
659 | ||
53d3ce37 | 660 | sprintf (buff, msg, h->root.root.string); |
55e6f0bf NC |
661 | info->callbacks->warning (info, buff, h->root.root.string, |
662 | abfd, h->root.u.def.section, 0); | |
de224d6a MM |
663 | |
664 | bfd_set_error (bfd_error_bad_value); | |
665 | h->other |= V850_OTHER_ERROR; | |
666 | ret = false; | |
667 | } | |
668 | } | |
669 | ||
8988d935 | 670 | if (h && h->root.type == bfd_link_hash_common |
de224d6a MM |
671 | && h->root.u.c.p |
672 | && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON")) | |
673 | { | |
674 | asection *section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common); | |
675 | section->flags |= SEC_IS_COMMON; | |
676 | } | |
677 | ||
678 | #ifdef DEBUG | |
679 | fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n", | |
680 | v850_elf_howto_table[ (int)r_type ].name, | |
681 | (h && h->root.root.string) ? h->root.root.string : "<unknown>", | |
682 | (h->root.type == bfd_link_hash_common) ? ", symbol is common" : ""); | |
683 | #endif | |
684 | break; | |
685 | } | |
686 | } | |
687 | ||
688 | return ret; | |
01b49cb3 C |
689 | } |
690 | ||
197de3ba CM |
691 | typedef struct |
692 | { | |
c84c3b96 | 693 | bfd_vma addend; |
197de3ba CM |
694 | bfd_byte * address; |
695 | unsigned long counter; | |
696 | } | |
697 | hi16s_location; | |
698 | ||
699 | static hi16s_location previous_hi16s[ 10 ]; /* XXX is this enough ? */ | |
700 | static unsigned long hi16s_counter; | |
701 | ||
702 | static void | |
703 | remember_hi16s_reloc (addend, address) | |
c84c3b96 | 704 | bfd_vma addend; |
197de3ba CM |
705 | bfd_byte * address; |
706 | { | |
707 | hi16s_location * oldest = NULL; | |
708 | int i; | |
709 | ||
710 | /* Find a free slot. */ | |
711 | for (i = sizeof (previous_hi16s) / sizeof (previous_hi16s[0]); i--;) | |
712 | { | |
713 | hi16s_location * entry = previous_hi16s + i; | |
714 | ||
715 | if (entry->addend == 0 && entry->address == 0) | |
716 | { | |
717 | /* Use this entry. */ | |
718 | oldest = entry; | |
719 | break; | |
720 | } | |
721 | ||
722 | /* Remember the least recently added entry. */ | |
723 | if (oldest == NULL || oldest->counter > entry->counter) | |
724 | oldest = entry; | |
725 | } | |
726 | ||
727 | oldest->addend = addend; | |
728 | oldest->address = address; | |
729 | oldest->counter = hi16s_counter ++; | |
730 | ||
731 | /* Cope with wrap around of our counter. */ | |
732 | if (hi16s_counter == 0) | |
733 | { | |
734 | /* XXX - Assume that all counter entries differ only in their low 16 bits. */ | |
735 | for (i = sizeof (previous_hi16s) / sizeof (previous_hi16s[0]); i--;) | |
736 | { | |
737 | hi16s_location * entry = previous_hi16s + i; | |
738 | ||
739 | entry->counter &= 0xffff; | |
740 | } | |
741 | ||
742 | hi16s_counter = 0x10000; | |
743 | } | |
744 | ||
745 | return; | |
746 | } | |
747 | ||
748 | static bfd_byte * | |
749 | find_remembered_hi16s_reloc (addend) | |
c84c3b96 | 750 | bfd_vma addend; |
197de3ba CM |
751 | { |
752 | hi16s_location * match = NULL; | |
753 | int i; | |
754 | ||
755 | /* Search the table. Record the most recent entry that matches. */ | |
756 | for (i = sizeof (previous_hi16s) / sizeof (previous_hi16s[0]); i--;) | |
757 | { | |
758 | hi16s_location * entry = previous_hi16s + i; | |
759 | ||
760 | if (entry->addend == addend) | |
761 | { | |
762 | if (match == NULL || match->counter < entry->counter) | |
763 | match = entry; | |
764 | } | |
765 | } | |
766 | ||
767 | if (match != NULL) | |
768 | { | |
769 | bfd_byte * addr; | |
770 | ||
771 | /* Empty the table entry. */ | |
772 | match->addend = 0; | |
773 | ||
774 | addr = match->address; | |
775 | match->address = NULL; | |
776 | ||
777 | return addr; | |
778 | } | |
779 | ||
780 | return NULL; | |
781 | } | |
782 | ||
e73b6ae6 | 783 | static bfd_reloc_status_type |
197de3ba | 784 | v850_elf_perform_relocation (abfd, r_type, addend, address) |
22a9f052 NC |
785 | bfd * abfd; |
786 | int r_type; | |
c84c3b96 | 787 | bfd_vma addend; |
22a9f052 | 788 | bfd_byte * address; |
e73b6ae6 | 789 | { |
22a9f052 | 790 | unsigned long insn; |
5ddf2a9e | 791 | |
22a9f052 | 792 | switch (r_type) |
5ddf2a9e NC |
793 | { |
794 | default: | |
22a9f052 | 795 | /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */ |
5ddf2a9e NC |
796 | return bfd_reloc_notsupported; |
797 | ||
22a9f052 | 798 | case R_V850_32: |
197de3ba | 799 | addend += bfd_get_32 (abfd, address); |
22a9f052 NC |
800 | bfd_put_32 (abfd, addend, address); |
801 | return bfd_reloc_ok; | |
802 | ||
5ddf2a9e | 803 | case R_V850_22_PCREL: |
22a9f052 | 804 | if (addend > 0x1fffff || addend < -0x200000) |
5ddf2a9e NC |
805 | return bfd_reloc_overflow; |
806 | ||
22a9f052 | 807 | if ((addend % 2) != 0) |
5ddf2a9e NC |
808 | return bfd_reloc_dangerous; |
809 | ||
22a9f052 | 810 | insn = bfd_get_32 (abfd, address); |
5ddf2a9e | 811 | insn &= ~0xfffe003f; |
22a9f052 NC |
812 | insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16)); |
813 | bfd_put_32 (abfd, insn, address); | |
5ddf2a9e NC |
814 | return bfd_reloc_ok; |
815 | ||
816 | case R_V850_9_PCREL: | |
22a9f052 | 817 | if (addend > 0xff || addend < -0x100) |
5ddf2a9e NC |
818 | return bfd_reloc_overflow; |
819 | ||
22a9f052 | 820 | if ((addend % 2) != 0) |
5ddf2a9e NC |
821 | return bfd_reloc_dangerous; |
822 | ||
22a9f052 | 823 | insn = bfd_get_16 (abfd, address); |
5ddf2a9e | 824 | insn &= ~ 0xf870; |
22a9f052 NC |
825 | insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3); |
826 | break; | |
5ddf2a9e | 827 | |
197de3ba CM |
828 | case R_V850_HI16: |
829 | addend += (bfd_get_16 (abfd, address) << 16); | |
830 | addend = (addend >> 16); | |
831 | insn = addend; | |
832 | break; | |
75172c0f | 833 | |
197de3ba CM |
834 | case R_V850_HI16_S: |
835 | /* Remember where this relocation took place. */ | |
836 | remember_hi16s_reloc (addend, address); | |
837 | ||
0a5875fc | 838 | addend += (bfd_get_16 (abfd, address) << 16); |
22a9f052 | 839 | addend = (addend >> 16) + ((addend & 0x8000) != 0); |
197de3ba | 840 | |
75172c0f NC |
841 | /* This relocation cannot overflow. */ |
842 | if (addend > 0x7fff || addend < -0x8000) | |
843 | addend = 0; | |
5ddf2a9e | 844 | |
22a9f052 NC |
845 | insn = addend; |
846 | break; | |
5ddf2a9e NC |
847 | |
848 | case R_V850_LO16: | |
75172c0f NC |
849 | /* Calculate the sum of the value stored in the instruction and the |
850 | addend and check for overflow from the low 16 bits into the high | |
6aa32b90 | 851 | 16 bits. The assembler has already done some of this: If the |
197de3ba CM |
852 | value stored in the instruction has its 15th bit set, (counting |
853 | from zero) then the assembler will have added 1 to the value | |
854 | stored in the associated HI16S reloc. So for example, these | |
855 | relocations: | |
6aa32b90 NC |
856 | |
857 | movhi hi( fred ), r0, r1 | |
858 | movea lo( fred ), r1, r1 | |
859 | ||
860 | will store 0 in the value fields for the MOVHI and MOVEA instructions | |
861 | and addend will be the address of fred, but for these instructions: | |
862 | ||
863 | movhi hi( fred + 0x123456), r0, r1 | |
864 | movea lo( fred + 0x123456), r1, r1 | |
865 | ||
866 | the value stored in the MOVHI instruction will be 0x12 and the value | |
867 | stored in the MOVEA instruction will be 0x3456. If however the | |
868 | instructions were: | |
869 | ||
870 | movhi hi( fred + 0x10ffff), r0, r1 | |
871 | movea lo( fred + 0x10ffff), r1, r1 | |
872 | ||
873 | then the value stored in the MOVHI instruction would be 0x11 (not | |
874 | 0x10) and the value stored in the MOVEA instruction would be 0xffff. | |
875 | Thus (assuming for the moment that the addend is 0), at run time the | |
876 | MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction | |
877 | adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if | |
878 | the instructions were: | |
879 | ||
880 | movhi hi( fred - 1), r0, r1 | |
881 | movea lo( fred - 1), r1, r1 | |
882 | ||
883 | then 0 is stored in the MOVHI instruction and -1 is stored in the | |
884 | MOVEA instruction. | |
885 | ||
886 | Overflow can occur if the addition of the value stored in the | |
197de3ba CM |
887 | instruction plus the addend sets the 15th bit when before it was clear. |
888 | This is because the 15th bit will be sign extended into the high part, | |
889 | thus reducing its value by one, but since the 15th bit was originally | |
890 | clear, the assembler will not have added 1 to the previous HI16S reloc | |
6aa32b90 NC |
891 | to compensate for this effect. For example: |
892 | ||
893 | movhi hi( fred + 0x123456), r0, r1 | |
894 | movea lo( fred + 0x123456), r1, r1 | |
895 | ||
896 | The value stored in HI16S reloc is 0x12, the value stored in the LO16 | |
897 | reloc is 0x3456. If we assume that the address of fred is 0x00007000 | |
898 | then the relocations become: | |
899 | ||
900 | HI16S: 0x0012 + (0x00007000 >> 16) = 0x12 | |
901 | LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456 | |
902 | ||
903 | but when the instructions are executed, the MOVEA instruction's value | |
904 | is signed extended, so the sum becomes: | |
905 | ||
906 | 0x00120000 | |
907 | + 0xffffa456 | |
908 | ------------ | |
909 | 0x0011a456 but 'fred + 0x123456' = 0x0012a456 | |
910 | ||
911 | Note that if the 15th bit was set in the value stored in the LO16 | |
912 | reloc, then we do not have to do anything: | |
913 | ||
914 | movhi hi( fred + 0x10ffff), r0, r1 | |
915 | movea lo( fred + 0x10ffff), r1, r1 | |
916 | ||
917 | HI16S: 0x0011 + (0x00007000 >> 16) = 0x11 | |
918 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff | |
919 | ||
920 | 0x00110000 | |
921 | + 0x00006fff | |
922 | ------------ | |
923 | 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff | |
924 | ||
925 | ||
926 | Overflow can also occur if the computation carries into the 16th bit | |
927 | and it also results in the 15th bit having the same value as the 15th | |
928 | bit of the original value. What happens is that the HI16S reloc | |
929 | will have already examined the 15th bit of the original value and | |
930 | added 1 to the high part if the bit is set. This compensates for the | |
931 | sign extension of 15th bit of the result of the computation. But now | |
932 | there is a carry into the 16th bit, and this has not been allowed for. | |
933 | ||
934 | So, for example if fred is at address 0xf000: | |
935 | ||
197de3ba | 936 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] |
6aa32b90 NC |
937 | movea lo( fred + 0xffff), r1, r1 |
938 | ||
939 | HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001 | |
197de3ba | 940 | LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost) |
6aa32b90 NC |
941 | |
942 | 0x00010000 | |
943 | + 0xffffefff | |
944 | ------------ | |
945 | 0x0000efff but 'fred + 0xffff' = 0x0001efff | |
946 | ||
947 | Similarly, if the 15th bit remains clear, but overflow occurs into | |
948 | the 16th bit then (assuming the address of fred is 0xf000): | |
949 | ||
197de3ba | 950 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] |
6aa32b90 NC |
951 | movea lo( fred + 0x7000), r1, r1 |
952 | ||
953 | HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000 | |
197de3ba | 954 | LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost) |
6aa32b90 NC |
955 | |
956 | 0x00000000 | |
957 | + 0x00006fff | |
958 | ------------ | |
959 | 0x00006fff but 'fred + 0x7000' = 0x00016fff | |
960 | ||
961 | Note - there is no need to change anything if a carry occurs, and the | |
962 | 15th bit changes its value from being set to being clear, as the HI16S | |
963 | reloc will have already added in 1 to the high part for us: | |
964 | ||
197de3ba | 965 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] |
6aa32b90 NC |
966 | movea lo( fred + 0xffff), r1, r1 |
967 | ||
968 | HI16S: 0x0001 + (0x00007000 >> 16) | |
197de3ba | 969 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost) |
6aa32b90 NC |
970 | |
971 | 0x00010000 | |
972 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
973 | ------------ | |
974 | 0x00016fff which is right (assuming that fred is at 0x7000) | |
975 | ||
976 | but if the 15th bit goes from being clear to being set, then we must | |
977 | once again handle overflow: | |
978 | ||
197de3ba | 979 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] |
6aa32b90 NC |
980 | movea lo( fred + 0x7000), r1, r1 |
981 | ||
982 | HI16S: 0x0000 + (0x0000ffff >> 16) | |
983 | LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16) | |
984 | ||
985 | 0x00000000 | |
986 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
987 | ------------ | |
988 | 0x00006fff which is wrong (assuming that fred is at 0xffff) | |
75172c0f NC |
989 | */ |
990 | ||
991 | { | |
992 | long result; | |
6aa32b90 | 993 | |
75172c0f NC |
994 | insn = bfd_get_16 (abfd, address); |
995 | result = insn + addend; | |
996 | ||
6aa32b90 NC |
997 | #define BIT15_SET(x) ((x) & 0x8000) |
998 | #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff) | |
75172c0f | 999 | |
6aa32b90 NC |
1000 | if ((BIT15_SET (result) && ! BIT15_SET (addend)) |
1001 | || (OVERFLOWS (addend, insn) | |
1002 | && ((! BIT15_SET (insn)) || (BIT15_SET (addend))))) | |
75172c0f | 1003 | { |
197de3ba CM |
1004 | bfd_byte * hi16s_address = find_remembered_hi16s_reloc (addend); |
1005 | ||
1006 | /* Amend the matching HI16_S relocation. */ | |
1007 | if (hi16s_address != NULL) | |
75172c0f | 1008 | { |
197de3ba | 1009 | insn = bfd_get_16 (abfd, hi16s_address); |
75172c0f | 1010 | insn += 1; |
197de3ba | 1011 | bfd_put_16 (abfd, insn, hi16s_address); |
75172c0f NC |
1012 | } |
1013 | else | |
1014 | { | |
53d3ce37 | 1015 | fprintf (stderr, _("FAILED to find previous HI16 reloc\n")); |
75172c0f NC |
1016 | return bfd_reloc_overflow; |
1017 | } | |
1018 | } | |
1019 | ||
1020 | /* Do not complain if value has top bit set, as this has been anticipated. */ | |
1021 | insn = result & 0xffff; | |
197de3ba | 1022 | break; |
75172c0f | 1023 | } |
75172c0f NC |
1024 | |
1025 | case R_V850_8: | |
197de3ba | 1026 | addend += (char) bfd_get_8 (abfd, address); |
75172c0f NC |
1027 | |
1028 | if (addend > 0x7f || addend < -0x80) | |
1029 | return bfd_reloc_overflow; | |
1030 | ||
1031 | bfd_put_8 (abfd, addend, address); | |
1032 | return bfd_reloc_ok; | |
def31039 | 1033 | |
22a9f052 NC |
1034 | /* start-sanitize-v850e */ |
1035 | case R_V850_CALLT_16_16_OFFSET: | |
197de3ba | 1036 | addend += bfd_get_16 (abfd, address); |
75172c0f NC |
1037 | |
1038 | if (addend > 0xffff || addend < 0) | |
1039 | return bfd_reloc_overflow; | |
1040 | ||
1041 | insn = addend; | |
1042 | break; | |
22a9f052 | 1043 | /* end-sanitize-v850e */ |
75172c0f NC |
1044 | |
1045 | case R_V850_16: | |
197de3ba | 1046 | |
75172c0f | 1047 | /* drop through */ |
5ddf2a9e NC |
1048 | case R_V850_SDA_16_16_OFFSET: |
1049 | case R_V850_ZDA_16_16_OFFSET: | |
5bb28764 | 1050 | case R_V850_TDA_16_16_OFFSET: |
197de3ba | 1051 | addend += bfd_get_16 (abfd, address); |
22a9f052 NC |
1052 | |
1053 | if (addend > 0x7fff || addend < -0x8000) | |
5ddf2a9e | 1054 | return bfd_reloc_overflow; |
22a9f052 NC |
1055 | |
1056 | insn = addend; | |
1057 | break; | |
5ddf2a9e NC |
1058 | |
1059 | case R_V850_SDA_15_16_OFFSET: | |
1060 | case R_V850_ZDA_15_16_OFFSET: | |
22a9f052 | 1061 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1062 | addend += (insn & 0xfffe); |
22a9f052 NC |
1063 | |
1064 | if (addend > 0x7ffe || addend < -0x8000) | |
5ddf2a9e NC |
1065 | return bfd_reloc_overflow; |
1066 | ||
22a9f052 | 1067 | if (addend & 1) |
197de3ba | 1068 | return bfd_reloc_dangerous; |
5ddf2a9e | 1069 | |
75172c0f | 1070 | insn = (addend & ~1) | (insn & 1); |
22a9f052 | 1071 | break; |
5ddf2a9e NC |
1072 | |
1073 | case R_V850_TDA_6_8_OFFSET: | |
22a9f052 | 1074 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1075 | addend += ((insn & 0x7e) << 1); |
22a9f052 NC |
1076 | |
1077 | if (addend > 0xfc || addend < 0) | |
5ddf2a9e NC |
1078 | return bfd_reloc_overflow; |
1079 | ||
22a9f052 | 1080 | if (addend & 3) |
5ddf2a9e NC |
1081 | return bfd_reloc_dangerous; |
1082 | ||
5ddf2a9e | 1083 | insn &= 0xff81; |
22a9f052 NC |
1084 | insn |= (addend >> 1); |
1085 | break; | |
5ddf2a9e NC |
1086 | |
1087 | case R_V850_TDA_7_8_OFFSET: | |
22a9f052 | 1088 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1089 | addend += ((insn & 0x7f) << 1); |
22a9f052 NC |
1090 | |
1091 | if (addend > 0xfe || addend < 0) | |
5ddf2a9e NC |
1092 | return bfd_reloc_overflow; |
1093 | ||
22a9f052 | 1094 | if (addend & 1) |
5ddf2a9e NC |
1095 | return bfd_reloc_dangerous; |
1096 | ||
5ddf2a9e | 1097 | insn &= 0xff80; |
22a9f052 NC |
1098 | insn |= (addend >> 1); |
1099 | break; | |
5ddf2a9e NC |
1100 | |
1101 | case R_V850_TDA_7_7_OFFSET: | |
22a9f052 | 1102 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1103 | addend += insn & 0x7f; |
22a9f052 NC |
1104 | |
1105 | if (addend > 0x7f || addend < 0) | |
5ddf2a9e NC |
1106 | return bfd_reloc_overflow; |
1107 | ||
5ddf2a9e | 1108 | insn &= 0xff80; |
22a9f052 NC |
1109 | insn |= addend; |
1110 | break; | |
5ddf2a9e | 1111 | |
def31039 | 1112 | /* start-sanitize-v850e */ |
5ddf2a9e | 1113 | case R_V850_TDA_4_5_OFFSET: |
22a9f052 | 1114 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1115 | addend += ((insn & 0xf) << 1); |
22a9f052 NC |
1116 | |
1117 | if (addend > 0x1e || addend < 0) | |
5ddf2a9e NC |
1118 | return bfd_reloc_overflow; |
1119 | ||
22a9f052 | 1120 | if (addend & 1) |
5ddf2a9e NC |
1121 | return bfd_reloc_dangerous; |
1122 | ||
5ddf2a9e | 1123 | insn &= 0xfff0; |
22a9f052 NC |
1124 | insn |= (addend >> 1); |
1125 | break; | |
5ddf2a9e NC |
1126 | |
1127 | case R_V850_TDA_4_4_OFFSET: | |
22a9f052 | 1128 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1129 | addend += insn & 0xf; |
22a9f052 NC |
1130 | |
1131 | if (addend > 0xf || addend < 0) | |
5ddf2a9e NC |
1132 | return bfd_reloc_overflow; |
1133 | ||
5ddf2a9e | 1134 | insn &= 0xfff0; |
22a9f052 NC |
1135 | insn |= addend; |
1136 | break; | |
5ddf2a9e NC |
1137 | |
1138 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
1139 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
22a9f052 | 1140 | insn = bfd_get_32 (abfd, address); |
197de3ba | 1141 | addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5); |
5ddf2a9e | 1142 | |
75172c0f | 1143 | if (addend > 0x7fff || addend < -0x8000) |
22a9f052 | 1144 | return bfd_reloc_overflow; |
5ddf2a9e NC |
1145 | |
1146 | insn &= 0x0001ffdf; | |
22a9f052 NC |
1147 | insn |= (addend & 1) << 5; |
1148 | insn |= (addend & ~1) << 16; | |
5ddf2a9e | 1149 | |
22a9f052 | 1150 | bfd_put_32 (abfd, insn, address); |
5ddf2a9e | 1151 | return bfd_reloc_ok; |
9420c20a NC |
1152 | |
1153 | case R_V850_CALLT_6_7_OFFSET: | |
22a9f052 | 1154 | insn = bfd_get_16 (abfd, address); |
197de3ba | 1155 | addend += ((insn & 0x3f) << 1); |
22a9f052 NC |
1156 | |
1157 | if (addend > 0x7e || addend < 0) | |
9420c20a NC |
1158 | return bfd_reloc_overflow; |
1159 | ||
22a9f052 | 1160 | if (addend & 1) |
9420c20a NC |
1161 | return bfd_reloc_dangerous; |
1162 | ||
9420c20a | 1163 | insn &= 0xff80; |
22a9f052 NC |
1164 | insn |= (addend >> 1); |
1165 | break; | |
1166 | /* end-sanitize-v850e */ | |
1167 | } | |
1168 | ||
1169 | bfd_put_16 (abfd, insn, address); | |
1170 | return bfd_reloc_ok; | |
1171 | } | |
1172 | ||
1173 | \f | |
1174 | /* Insert the addend into the instruction. */ | |
1175 | static bfd_reloc_status_type | |
1176 | v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err) | |
1177 | bfd * abfd; | |
1178 | arelent * reloc; | |
1179 | asymbol * symbol; | |
1180 | PTR data; | |
1181 | asection * isection; | |
1182 | bfd * obfd; | |
1183 | char ** err; | |
1184 | { | |
1185 | long relocation; | |
22a9f052 NC |
1186 | |
1187 | /* If there is an output BFD, | |
1188 | and the symbol is not a section name (which is only defined at final link time), | |
1189 | and either we are not putting the addend into the instruction | |
1190 | or the addend is zero, so there is nothing to add into the instruction | |
1191 | then just fixup the address and return. */ | |
1192 | if (obfd != (bfd *) NULL | |
1193 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1194 | && (! reloc->howto->partial_inplace | |
1195 | || reloc->addend == 0)) | |
1196 | { | |
1197 | reloc->address += isection->output_offset; | |
9420c20a | 1198 | return bfd_reloc_ok; |
22a9f052 NC |
1199 | } |
1200 | #if 0 | |
1201 | else if (obfd != NULL) | |
1202 | { | |
1203 | return bfd_reloc_continue; | |
1204 | } | |
1205 | #endif | |
1206 | ||
1207 | /* Catch relocs involving undefined symbols. */ | |
1208 | if (bfd_is_und_section (symbol->section) | |
1209 | && (symbol->flags & BSF_WEAK) == 0 | |
1210 | && obfd == NULL) | |
1211 | return bfd_reloc_undefined; | |
1212 | ||
1213 | /* We handle final linking of some relocs ourselves. */ | |
1214 | ||
1215 | /* Is the address of the relocation really within the section? */ | |
1216 | if (reloc->address > isection->_cooked_size) | |
1217 | return bfd_reloc_outofrange; | |
1218 | ||
1219 | /* Work out which section the relocation is targetted at and the | |
1220 | initial relocation command value. */ | |
1221 | ||
1222 | /* Get symbol value. (Common symbols are special.) */ | |
1223 | if (bfd_is_com_section (symbol->section)) | |
1224 | relocation = 0; | |
1225 | else | |
1226 | relocation = symbol->value; | |
1227 | ||
1228 | /* Convert input-section-relative symbol value to absolute + addend. */ | |
1229 | relocation += symbol->section->output_section->vma; | |
1230 | relocation += symbol->section->output_offset; | |
1231 | relocation += reloc->addend; | |
1232 | ||
1233 | if (reloc->howto->pc_relative == true) | |
1234 | { | |
1235 | /* Here the variable relocation holds the final address of the | |
1236 | symbol we are relocating against, plus any addend. */ | |
1237 | relocation -= isection->output_section->vma + isection->output_offset; | |
9420c20a | 1238 | |
22a9f052 NC |
1239 | /* Deal with pcrel_offset */ |
1240 | relocation -= reloc->address; | |
e73b6ae6 JL |
1241 | } |
1242 | ||
197de3ba CM |
1243 | reloc->addend = relocation; |
1244 | return bfd_reloc_ok; | |
e73b6ae6 JL |
1245 | } |
1246 | ||
de224d6a | 1247 | \f |
1336da39 SG |
1248 | /*ARGSUSED*/ |
1249 | static boolean | |
8988d935 | 1250 | v850_elf_is_local_label_name (abfd, name) |
9420c20a NC |
1251 | bfd * abfd; |
1252 | const char * name; | |
1336da39 | 1253 | { |
22a9f052 NC |
1254 | return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.')) |
1255 | || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')); | |
1336da39 SG |
1256 | } |
1257 | ||
de224d6a | 1258 | \f |
725b96f5 JL |
1259 | /* Perform a relocation as part of a final link. */ |
1260 | static bfd_reloc_status_type | |
de224d6a | 1261 | v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
725b96f5 JL |
1262 | input_section, contents, offset, value, |
1263 | addend, info, sym_sec, is_local) | |
def31039 NC |
1264 | reloc_howto_type * howto; |
1265 | bfd * input_bfd; | |
1266 | bfd * output_bfd; | |
1267 | asection * input_section; | |
1268 | bfd_byte * contents; | |
1269 | bfd_vma offset; | |
1270 | bfd_vma value; | |
1271 | bfd_vma addend; | |
1272 | struct bfd_link_info * info; | |
1273 | asection * sym_sec; | |
1274 | int is_local; | |
725b96f5 | 1275 | { |
def31039 NC |
1276 | unsigned long r_type = howto->type; |
1277 | bfd_byte * hit_data = contents + offset; | |
725b96f5 | 1278 | |
75172c0f | 1279 | /* Adjust the value according to the relocation. */ |
725b96f5 JL |
1280 | switch (r_type) |
1281 | { | |
1282 | case R_V850_9_PCREL: | |
1283 | value -= (input_section->output_section->vma | |
1284 | + input_section->output_offset); | |
1285 | value -= offset; | |
75172c0f | 1286 | break; |
725b96f5 JL |
1287 | |
1288 | case R_V850_22_PCREL: | |
1289 | value -= (input_section->output_section->vma | |
22a9f052 NC |
1290 | + input_section->output_offset |
1291 | + offset); | |
1292 | ||
1293 | value = SEXT24 (value); /* Only the bottom 24 bits of the PC are valid */ | |
75172c0f | 1294 | break; |
725b96f5 JL |
1295 | |
1296 | case R_V850_HI16_S: | |
725b96f5 | 1297 | case R_V850_HI16: |
725b96f5 | 1298 | case R_V850_LO16: |
725b96f5 | 1299 | case R_V850_16: |
75172c0f NC |
1300 | case R_V850_32: |
1301 | case R_V850_8: | |
1302 | break; | |
725b96f5 | 1303 | |
def31039 | 1304 | case R_V850_ZDA_15_16_OFFSET: |
75172c0f NC |
1305 | case R_V850_ZDA_16_16_OFFSET: |
1306 | /* start-sanitize-v850e */ | |
1307 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
1308 | /* end-sanitize-v850e */ | |
db1fa6ab NC |
1309 | if (sym_sec == NULL) |
1310 | return bfd_reloc_undefined; | |
1311 | ||
def31039 | 1312 | value -= sym_sec->output_section->vma; |
75172c0f | 1313 | break; |
725b96f5 | 1314 | |
75172c0f | 1315 | case R_V850_SDA_15_16_OFFSET: |
def31039 | 1316 | case R_V850_SDA_16_16_OFFSET: |
75172c0f NC |
1317 | /* start-sanitize-v850e */ |
1318 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
1319 | /* end-sanitize-v850e */ | |
725b96f5 | 1320 | { |
def31039 NC |
1321 | unsigned long gp; |
1322 | struct bfd_link_hash_entry * h; | |
725b96f5 | 1323 | |
75172c0f NC |
1324 | if (sym_sec == NULL) |
1325 | return bfd_reloc_undefined; | |
db1fa6ab | 1326 | |
def31039 NC |
1327 | /* Get the value of __gp. */ |
1328 | h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true); | |
1329 | if (h == (struct bfd_link_hash_entry *) NULL | |
1330 | || h->type != bfd_link_hash_defined) | |
1331 | return bfd_reloc_other; | |
1332 | ||
1333 | gp = (h->u.def.value | |
1334 | + h->u.def.section->output_section->vma | |
1335 | + h->u.def.section->output_offset); | |
75172c0f | 1336 | |
def31039 NC |
1337 | value -= sym_sec->output_section->vma; |
1338 | value -= (gp - sym_sec->output_section->vma); | |
5bb28764 | 1339 | } |
75172c0f | 1340 | break; |
5bb28764 | 1341 | |
def31039 | 1342 | /* start-sanitize-v850e */ |
75172c0f | 1343 | case R_V850_TDA_4_4_OFFSET: |
def31039 | 1344 | case R_V850_TDA_4_5_OFFSET: |
75172c0f NC |
1345 | /* end-sanitize-v850e */ |
1346 | case R_V850_TDA_16_16_OFFSET: | |
1347 | case R_V850_TDA_7_7_OFFSET: | |
1348 | case R_V850_TDA_7_8_OFFSET: | |
1349 | case R_V850_TDA_6_8_OFFSET: | |
def31039 NC |
1350 | { |
1351 | unsigned long ep; | |
1352 | struct bfd_link_hash_entry * h; | |
1353 | ||
1354 | /* Get the value of __ep. */ | |
1355 | h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true); | |
1356 | if (h == (struct bfd_link_hash_entry *) NULL | |
1357 | || h->type != bfd_link_hash_defined) | |
1358 | return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */ | |
c322f1b5 | 1359 | |
def31039 NC |
1360 | ep = (h->u.def.value |
1361 | + h->u.def.section->output_section->vma | |
1362 | + h->u.def.section->output_offset); | |
c322f1b5 | 1363 | |
def31039 | 1364 | value -= ep; |
def31039 | 1365 | } |
75172c0f | 1366 | break; |
def31039 | 1367 | |
75172c0f | 1368 | /* start-sanitize-v850e */ |
9420c20a NC |
1369 | case R_V850_CALLT_6_7_OFFSET: |
1370 | { | |
1371 | unsigned long ctbp; | |
1372 | struct bfd_link_hash_entry * h; | |
1373 | ||
1374 | /* Get the value of __ctbp. */ | |
1375 | h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); | |
1376 | if (h == (struct bfd_link_hash_entry *) NULL | |
1377 | || h->type != bfd_link_hash_defined) | |
676d3f02 | 1378 | return (bfd_reloc_dangerous + 1); /* Actually this indicates that __ctbp could not be found. */ |
9420c20a NC |
1379 | |
1380 | ctbp = (h->u.def.value | |
1381 | + h->u.def.section->output_section->vma | |
1382 | + h->u.def.section->output_offset); | |
1383 | value -= ctbp; | |
9420c20a | 1384 | } |
75172c0f | 1385 | break; |
def31039 | 1386 | |
9420c20a | 1387 | case R_V850_CALLT_16_16_OFFSET: |
9420c20a NC |
1388 | { |
1389 | unsigned long ctbp; | |
1390 | struct bfd_link_hash_entry * h; | |
1391 | ||
75172c0f NC |
1392 | if (sym_sec == NULL) |
1393 | return bfd_reloc_undefined; | |
1394 | ||
9420c20a NC |
1395 | /* Get the value of __ctbp. */ |
1396 | h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); | |
1397 | if (h == (struct bfd_link_hash_entry *) NULL | |
1398 | || h->type != bfd_link_hash_defined) | |
676d3f02 | 1399 | return (bfd_reloc_dangerous + 1); |
9420c20a NC |
1400 | |
1401 | ctbp = (h->u.def.value | |
1402 | + h->u.def.section->output_section->vma | |
1403 | + h->u.def.section->output_offset); | |
1404 | ||
1405 | value -= sym_sec->output_section->vma; | |
1406 | value -= (ctbp - sym_sec->output_section->vma); | |
9420c20a | 1407 | } |
75172c0f | 1408 | break; |
9420c20a | 1409 | /* end-sanitize-v850e */ |
75172c0f | 1410 | |
725b96f5 | 1411 | case R_V850_NONE: |
8988d935 NC |
1412 | return bfd_reloc_ok; |
1413 | ||
725b96f5 | 1414 | default: |
8988d935 | 1415 | return bfd_reloc_notsupported; |
725b96f5 | 1416 | } |
75172c0f NC |
1417 | |
1418 | /* Perform the relocation. */ | |
53d3ce37 | 1419 | return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data); |
725b96f5 JL |
1420 | } |
1421 | ||
de224d6a | 1422 | \f |
725b96f5 | 1423 | /* Relocate an V850 ELF section. */ |
725b96f5 JL |
1424 | static boolean |
1425 | v850_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
de224d6a | 1426 | contents, relocs, local_syms, local_sections) |
def31039 NC |
1427 | bfd * output_bfd; |
1428 | struct bfd_link_info * info; | |
1429 | bfd * input_bfd; | |
1430 | asection * input_section; | |
1431 | bfd_byte * contents; | |
1432 | Elf_Internal_Rela * relocs; | |
1433 | Elf_Internal_Sym * local_syms; | |
1434 | asection ** local_sections; | |
725b96f5 | 1435 | { |
def31039 NC |
1436 | Elf_Internal_Shdr * symtab_hdr; |
1437 | struct elf_link_hash_entry ** sym_hashes; | |
1438 | Elf_Internal_Rela * rel; | |
1439 | Elf_Internal_Rela * relend; | |
725b96f5 | 1440 | |
def31039 | 1441 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
725b96f5 JL |
1442 | sym_hashes = elf_sym_hashes (input_bfd); |
1443 | ||
def31039 | 1444 | rel = relocs; |
725b96f5 JL |
1445 | relend = relocs + input_section->reloc_count; |
1446 | for (; rel < relend; rel++) | |
1447 | { | |
def31039 NC |
1448 | int r_type; |
1449 | reloc_howto_type * howto; | |
1450 | unsigned long r_symndx; | |
1451 | Elf_Internal_Sym * sym; | |
1452 | asection * sec; | |
1453 | struct elf_link_hash_entry * h; | |
1454 | bfd_vma relocation; | |
1455 | bfd_reloc_status_type r; | |
725b96f5 | 1456 | |
8988d935 | 1457 | r_symndx = ELF32_R_SYM (rel->r_info); |
def31039 NC |
1458 | r_type = ELF32_R_TYPE (rel->r_info); |
1459 | howto = v850_elf_howto_table + r_type; | |
8988d935 | 1460 | |
725b96f5 JL |
1461 | if (info->relocateable) |
1462 | { | |
1463 | /* This is a relocateable link. We don't have to change | |
1464 | anything, unless the reloc is against a section symbol, | |
1465 | in which case we have to adjust according to where the | |
1466 | section symbol winds up in the output section. */ | |
1467 | if (r_symndx < symtab_hdr->sh_info) | |
1468 | { | |
1469 | sym = local_syms + r_symndx; | |
1470 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1471 | { | |
1472 | sec = local_sections[r_symndx]; | |
1473 | rel->r_addend += sec->output_offset + sym->st_value; | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | continue; | |
1478 | } | |
1479 | ||
725b96f5 JL |
1480 | /* This is a final link. */ |
1481 | h = NULL; | |
1482 | sym = NULL; | |
1483 | sec = NULL; | |
1484 | if (r_symndx < symtab_hdr->sh_info) | |
1485 | { | |
1486 | sym = local_syms + r_symndx; | |
1487 | sec = local_sections[r_symndx]; | |
1488 | relocation = (sec->output_section->vma | |
1489 | + sec->output_offset | |
1490 | + sym->st_value); | |
def31039 NC |
1491 | #if 0 |
1492 | { | |
1493 | char * name; | |
1494 | name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
1495 | name = (name == NULL) ? "<none>" : name; | |
75172c0f NC |
1496 | fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", |
1497 | sec->name, name, sym->st_name, | |
1498 | sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend); | |
def31039 NC |
1499 | } |
1500 | #endif | |
725b96f5 JL |
1501 | } |
1502 | else | |
1503 | { | |
1504 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
def31039 | 1505 | |
725b96f5 JL |
1506 | while (h->root.type == bfd_link_hash_indirect |
1507 | || h->root.type == bfd_link_hash_warning) | |
1508 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
def31039 | 1509 | |
725b96f5 JL |
1510 | if (h->root.type == bfd_link_hash_defined |
1511 | || h->root.type == bfd_link_hash_defweak) | |
1512 | { | |
1513 | sec = h->root.u.def.section; | |
1514 | relocation = (h->root.u.def.value | |
1515 | + sec->output_section->vma | |
1516 | + sec->output_offset); | |
676d3f02 NC |
1517 | #if 0 |
1518 | fprintf (stderr, "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n", | |
1519 | sec->name, h->root.root.string, h->root.u.def.value, sec->output_section->vma, sec->output_offset, relocation); | |
1520 | #endif | |
725b96f5 JL |
1521 | } |
1522 | else if (h->root.type == bfd_link_hash_undefweak) | |
676d3f02 NC |
1523 | { |
1524 | #if 0 | |
1525 | fprintf (stderr, "undefined: sec: %s, name: %s\n", | |
1526 | sec->name, h->root.root.string); | |
1527 | #endif | |
1528 | relocation = 0; | |
1529 | } | |
725b96f5 JL |
1530 | else |
1531 | { | |
1532 | if (! ((*info->callbacks->undefined_symbol) | |
1533 | (info, h->root.root.string, input_bfd, | |
1534 | input_section, rel->r_offset))) | |
1535 | return false; | |
676d3f02 NC |
1536 | #if 0 |
1537 | fprintf (stderr, "unknown: name: %s\n", h->root.root.string); | |
1538 | #endif | |
725b96f5 JL |
1539 | relocation = 0; |
1540 | } | |
1541 | } | |
1542 | ||
1543 | /* FIXME: We should use the addend, but the COFF relocations | |
1544 | don't. */ | |
de224d6a MM |
1545 | r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1546 | input_section, | |
1547 | contents, rel->r_offset, | |
1548 | relocation, rel->r_addend, | |
1549 | info, sec, h == NULL); | |
725b96f5 JL |
1550 | |
1551 | if (r != bfd_reloc_ok) | |
1552 | { | |
def31039 NC |
1553 | const char * name; |
1554 | const char * msg = (const char *)0; | |
8988d935 NC |
1555 | |
1556 | if (h != NULL) | |
1557 | name = h->root.root.string; | |
1558 | else | |
1559 | { | |
1560 | name = (bfd_elf_string_from_elf_section | |
1561 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1562 | if (name == NULL || *name == '\0') | |
1563 | name = bfd_section_name (input_bfd, sec); | |
1564 | } | |
1565 | ||
725b96f5 JL |
1566 | switch (r) |
1567 | { | |
725b96f5 | 1568 | case bfd_reloc_overflow: |
8988d935 NC |
1569 | if (! ((*info->callbacks->reloc_overflow) |
1570 | (info, name, howto->name, (bfd_vma) 0, | |
1571 | input_bfd, input_section, rel->r_offset))) | |
1572 | return false; | |
1573 | break; | |
1574 | ||
1575 | case bfd_reloc_undefined: | |
1576 | if (! ((*info->callbacks->undefined_symbol) | |
1577 | (info, name, input_bfd, input_section, | |
1578 | rel->r_offset))) | |
1579 | return false; | |
1580 | break; | |
1581 | ||
1582 | case bfd_reloc_outofrange: | |
53d3ce37 | 1583 | msg = _("internal error: out of range error"); |
8988d935 NC |
1584 | goto common_error; |
1585 | ||
1586 | case bfd_reloc_notsupported: | |
53d3ce37 | 1587 | msg = _("internal error: unsupported relocation error"); |
8988d935 NC |
1588 | goto common_error; |
1589 | ||
1590 | case bfd_reloc_dangerous: | |
53d3ce37 | 1591 | msg = _("internal error: dangerous relocation"); |
def31039 NC |
1592 | goto common_error; |
1593 | ||
1594 | case bfd_reloc_other: | |
53d3ce37 | 1595 | msg = _("could not locate special linker symbol __gp"); |
def31039 NC |
1596 | goto common_error; |
1597 | ||
1598 | case bfd_reloc_continue: | |
53d3ce37 | 1599 | msg = _("could not locate special linker symbol __ep"); |
8988d935 NC |
1600 | goto common_error; |
1601 | ||
676d3f02 | 1602 | case (bfd_reloc_dangerous + 1): |
53d3ce37 | 1603 | msg = _("could not locate special linker symbol __ctbp"); |
676d3f02 NC |
1604 | goto common_error; |
1605 | ||
8988d935 | 1606 | default: |
53d3ce37 | 1607 | msg = _("internal error: unknown error"); |
8988d935 NC |
1608 | /* fall through */ |
1609 | ||
1610 | common_error: | |
1611 | if (!((*info->callbacks->warning) | |
1612 | (info, msg, name, input_bfd, input_section, | |
1613 | rel->r_offset))) | |
1614 | return false; | |
725b96f5 JL |
1615 | break; |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | return true; | |
1621 | } | |
01b49cb3 | 1622 | |
8988d935 | 1623 | /* Set the right machine number. */ |
8988d935 NC |
1624 | static boolean |
1625 | v850_elf_object_p (abfd) | |
1626 | bfd *abfd; | |
1627 | { | |
8bef8c30 | 1628 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) |
8988d935 NC |
1629 | { |
1630 | default: | |
8bef8c30 | 1631 | case E_V850_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, 0); break; |
8988d935 | 1632 | /* start-sanitize-v850e */ |
8bef8c30 | 1633 | case E_V850E_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); break; |
75172c0f | 1634 | case E_V850EA_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850ea); break; |
15d82b26 | 1635 | /* end-sanitize-v850e */ |
8988d935 | 1636 | } |
197de3ba | 1637 | return true; |
8988d935 NC |
1638 | } |
1639 | ||
8bef8c30 | 1640 | /* Store the machine number in the flags field. */ |
c84c3b96 | 1641 | static void |
8bef8c30 NC |
1642 | v850_elf_final_write_processing (abfd, linker) |
1643 | bfd * abfd; | |
1644 | boolean linker; | |
1645 | { | |
1646 | unsigned long val; | |
1647 | ||
1648 | switch (bfd_get_mach (abfd)) | |
1649 | { | |
1650 | default: | |
1651 | case 0: val = E_V850_ARCH; break; | |
8988d935 | 1652 | /* start-sanitize-v850e */ |
15d82b26 | 1653 | case bfd_mach_v850e: val = E_V850E_ARCH; break; |
75172c0f | 1654 | case bfd_mach_v850ea: val = E_V850EA_ARCH; break; |
15d82b26 | 1655 | /* end-sanitize-v850e */ |
8bef8c30 NC |
1656 | } |
1657 | ||
1658 | elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH; | |
1659 | elf_elfheader (abfd)->e_flags |= val; | |
1660 | } | |
1661 | ||
1662 | /* Function to keep V850 specific file flags. */ | |
c84c3b96 | 1663 | static boolean |
8bef8c30 NC |
1664 | v850_elf_set_private_flags (abfd, flags) |
1665 | bfd * abfd; | |
1666 | flagword flags; | |
1667 | { | |
1668 | BFD_ASSERT (!elf_flags_init (abfd) | |
1669 | || elf_elfheader (abfd)->e_flags == flags); | |
1670 | ||
1671 | elf_elfheader (abfd)->e_flags = flags; | |
1672 | elf_flags_init (abfd) = true; | |
1673 | return true; | |
1674 | } | |
1675 | ||
1676 | /* Copy backend specific data from one object module to another */ | |
c84c3b96 | 1677 | static boolean |
8bef8c30 NC |
1678 | v850_elf_copy_private_bfd_data (ibfd, obfd) |
1679 | bfd * ibfd; | |
1680 | bfd * obfd; | |
1681 | { | |
1682 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1683 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1684 | return true; | |
1685 | ||
1686 | BFD_ASSERT (!elf_flags_init (obfd) | |
1687 | || (elf_elfheader (obfd)->e_flags | |
1688 | == elf_elfheader (ibfd)->e_flags)); | |
1689 | ||
1690 | elf_gp (obfd) = elf_gp (ibfd); | |
1691 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
1692 | elf_flags_init (obfd) = true; | |
1693 | return true; | |
1694 | } | |
1695 | ||
1696 | /* Merge backend specific data from an object file to the output | |
1697 | object file when linking. */ | |
c84c3b96 | 1698 | static boolean |
8bef8c30 NC |
1699 | v850_elf_merge_private_bfd_data (ibfd, obfd) |
1700 | bfd * ibfd; | |
1701 | bfd * obfd; | |
1702 | { | |
8b6dcc1b NC |
1703 | flagword out_flags; |
1704 | flagword in_flags; | |
8bef8c30 NC |
1705 | |
1706 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1707 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1708 | return true; | |
1709 | ||
8b6dcc1b NC |
1710 | in_flags = elf_elfheader (ibfd)->e_flags; |
1711 | out_flags = elf_elfheader (obfd)->e_flags; | |
8bef8c30 NC |
1712 | |
1713 | if (! elf_flags_init (obfd)) | |
1714 | { | |
8b6dcc1b NC |
1715 | /* If the input is the default architecture then do not |
1716 | bother setting the flags for the output architecture, | |
1717 | instead allow future merges to do this. If no future | |
1718 | merges ever set these flags then they will retain their | |
1719 | unitialised values, which surprise surprise, correspond | |
1720 | to the default values. */ | |
1721 | if (bfd_get_arch_info (ibfd)->the_default) | |
1722 | return true; | |
1723 | ||
8bef8c30 | 1724 | elf_flags_init (obfd) = true; |
8b6dcc1b | 1725 | elf_elfheader (obfd)->e_flags = in_flags; |
8bef8c30 NC |
1726 | |
1727 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1728 | && bfd_get_arch_info (obfd)->the_default) | |
1729 | { | |
1730 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
1731 | } | |
1732 | ||
1733 | return true; | |
1734 | } | |
1735 | ||
1736 | /* Check flag compatibility. */ | |
8b6dcc1b | 1737 | if (in_flags == out_flags) |
8bef8c30 NC |
1738 | return true; |
1739 | ||
8b6dcc1b NC |
1740 | if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH) |
1741 | && (in_flags & EF_V850_ARCH) != E_V850_ARCH) | |
53d3ce37 | 1742 | _bfd_error_handler (_("%s: Architecture mismatch with previous modules"), |
8b6dcc1b | 1743 | bfd_get_filename (ibfd)); |
8bef8c30 NC |
1744 | |
1745 | return true; | |
1746 | } | |
1747 | /* Display the flags field */ | |
1748 | ||
1749 | static boolean | |
1750 | v850_elf_print_private_bfd_data (abfd, ptr) | |
1751 | bfd * abfd; | |
1752 | PTR ptr; | |
1753 | { | |
1754 | FILE * file = (FILE *) ptr; | |
1755 | ||
cfba9ab0 | 1756 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
8bef8c30 | 1757 | |
cfba9ab0 NC |
1758 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
1759 | ||
1760 | /* xgettext:c-format */ | |
1761 | fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags); | |
8bef8c30 NC |
1762 | |
1763 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) | |
1764 | { | |
1765 | default: | |
cfba9ab0 | 1766 | case E_V850_ARCH: fprintf (file, _("v850 architecture")); break; |
8bef8c30 | 1767 | /* start-sanitize-v850e */ |
cfba9ab0 NC |
1768 | case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break; |
1769 | case E_V850EA_ARCH: fprintf (file, _("v850ea architecture")); break; | |
15d82b26 | 1770 | /* end-sanitize-v850e */ |
8bef8c30 NC |
1771 | } |
1772 | ||
1773 | fputc ('\n', file); | |
1774 | ||
1775 | return true; | |
1776 | } | |
22a9f052 NC |
1777 | |
1778 | /* V850 ELF uses four common sections. One is the usual one, and the | |
1779 | others are for (small) objects in one of the special data areas: | |
1780 | small, tiny and zero. All the objects are kept together, and then | |
1781 | referenced via the gp register, the ep register or the r0 register | |
1782 | respectively, which yields smaller, faster assembler code. This | |
1783 | approach is copied from elf32-mips.c. */ | |
1784 | ||
1785 | static asection v850_elf_scom_section; | |
1786 | static asymbol v850_elf_scom_symbol; | |
1787 | static asymbol * v850_elf_scom_symbol_ptr; | |
1788 | static asection v850_elf_tcom_section; | |
1789 | static asymbol v850_elf_tcom_symbol; | |
1790 | static asymbol * v850_elf_tcom_symbol_ptr; | |
1791 | static asection v850_elf_zcom_section; | |
1792 | static asymbol v850_elf_zcom_symbol; | |
1793 | static asymbol * v850_elf_zcom_symbol_ptr; | |
1794 | ||
1795 | ||
1796 | /* Given a BFD section, try to locate the corresponding ELF section | |
1797 | index. */ | |
1798 | ||
1799 | static boolean | |
1800 | v850_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
1801 | bfd * abfd; | |
1802 | Elf32_Internal_Shdr * hdr; | |
1803 | asection * sec; | |
1804 | int * retval; | |
1805 | { | |
1806 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
1807 | { | |
1808 | *retval = SHN_V850_SCOMMON; | |
1809 | return true; | |
1810 | } | |
1811 | if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0) | |
1812 | { | |
1813 | *retval = SHN_V850_TCOMMON; | |
1814 | return true; | |
1815 | } | |
1816 | if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0) | |
1817 | { | |
1818 | *retval = SHN_V850_ZCOMMON; | |
1819 | return true; | |
1820 | } | |
1821 | return false; | |
1822 | } | |
1823 | ||
1824 | /* Handle the special V850 section numbers that a symbol may use. */ | |
1825 | ||
1826 | static void | |
1827 | v850_elf_symbol_processing (abfd, asym) | |
1828 | bfd * abfd; | |
1829 | asymbol * asym; | |
1830 | { | |
1831 | elf_symbol_type * elfsym = (elf_symbol_type *) asym; | |
1832 | ||
1833 | switch (elfsym->internal_elf_sym.st_shndx) | |
1834 | { | |
1835 | case SHN_V850_SCOMMON: | |
1836 | if (v850_elf_scom_section.name == NULL) | |
1837 | { | |
1838 | /* Initialize the small common section. */ | |
1839 | v850_elf_scom_section.name = ".scommon"; | |
1840 | v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA; | |
1841 | v850_elf_scom_section.output_section = & v850_elf_scom_section; | |
1842 | v850_elf_scom_section.symbol = & v850_elf_scom_symbol; | |
1843 | v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr; | |
1844 | v850_elf_scom_symbol.name = ".scommon"; | |
1845 | v850_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
1846 | v850_elf_scom_symbol.section = & v850_elf_scom_section; | |
1847 | v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol; | |
1848 | } | |
1849 | asym->section = & v850_elf_scom_section; | |
1850 | asym->value = elfsym->internal_elf_sym.st_size; | |
1851 | break; | |
1852 | ||
1853 | case SHN_V850_TCOMMON: | |
1854 | if (v850_elf_tcom_section.name == NULL) | |
1855 | { | |
1856 | /* Initialize the tcommon section. */ | |
1857 | v850_elf_tcom_section.name = ".tcommon"; | |
1858 | v850_elf_tcom_section.flags = SEC_IS_COMMON; | |
1859 | v850_elf_tcom_section.output_section = & v850_elf_tcom_section; | |
1860 | v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol; | |
1861 | v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr; | |
1862 | v850_elf_tcom_symbol.name = ".tcommon"; | |
1863 | v850_elf_tcom_symbol.flags = BSF_SECTION_SYM; | |
1864 | v850_elf_tcom_symbol.section = & v850_elf_tcom_section; | |
1865 | v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol; | |
1866 | } | |
1867 | asym->section = & v850_elf_tcom_section; | |
1868 | asym->value = elfsym->internal_elf_sym.st_size; | |
1869 | break; | |
1870 | ||
1871 | case SHN_V850_ZCOMMON: | |
1872 | if (v850_elf_zcom_section.name == NULL) | |
1873 | { | |
1874 | /* Initialize the zcommon section. */ | |
1875 | v850_elf_zcom_section.name = ".zcommon"; | |
1876 | v850_elf_zcom_section.flags = SEC_IS_COMMON; | |
1877 | v850_elf_zcom_section.output_section = & v850_elf_zcom_section; | |
1878 | v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol; | |
1879 | v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr; | |
1880 | v850_elf_zcom_symbol.name = ".zcommon"; | |
1881 | v850_elf_zcom_symbol.flags = BSF_SECTION_SYM; | |
1882 | v850_elf_zcom_symbol.section = & v850_elf_zcom_section; | |
1883 | v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol; | |
1884 | } | |
1885 | asym->section = & v850_elf_zcom_section; | |
1886 | asym->value = elfsym->internal_elf_sym.st_size; | |
1887 | break; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | /* Hook called by the linker routine which adds symbols from an object | |
1892 | file. We must handle the special MIPS section numbers here. */ | |
1893 | ||
1894 | /*ARGSUSED*/ | |
1895 | static boolean | |
1896 | v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
1897 | bfd * abfd; | |
1898 | struct bfd_link_info * info; | |
1899 | const Elf_Internal_Sym * sym; | |
1900 | const char ** namep; | |
1901 | flagword * flagsp; | |
1902 | asection ** secp; | |
1903 | bfd_vma * valp; | |
1904 | { | |
1905 | switch (sym->st_shndx) | |
1906 | { | |
1907 | case SHN_V850_SCOMMON: | |
1908 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
1909 | (*secp)->flags |= SEC_IS_COMMON; | |
1910 | *valp = sym->st_size; | |
1911 | break; | |
1912 | ||
1913 | case SHN_V850_TCOMMON: | |
1914 | *secp = bfd_make_section_old_way (abfd, ".tcommon"); | |
1915 | (*secp)->flags |= SEC_IS_COMMON; | |
1916 | *valp = sym->st_size; | |
1917 | break; | |
1918 | ||
1919 | case SHN_V850_ZCOMMON: | |
1920 | *secp = bfd_make_section_old_way (abfd, ".zcommon"); | |
1921 | (*secp)->flags |= SEC_IS_COMMON; | |
1922 | *valp = sym->st_size; | |
1923 | break; | |
1924 | } | |
1925 | ||
1926 | return true; | |
1927 | } | |
1928 | ||
1929 | /*ARGSIGNORED*/ | |
1930 | static boolean | |
1931 | v850_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
1932 | bfd * abfd; | |
1933 | struct bfd_link_info * info; | |
1934 | const char * name; | |
1935 | Elf_Internal_Sym * sym; | |
1936 | asection * input_sec; | |
1937 | { | |
1938 | /* If we see a common symbol, which implies a relocatable link, then | |
1939 | if a symbol was in a special common section in an input file, mark | |
1940 | it as a special common in the output file. */ | |
1941 | ||
1942 | if (sym->st_shndx == SHN_COMMON) | |
1943 | { | |
1944 | if (strcmp (input_sec->name, ".scommon") == 0) | |
1945 | sym->st_shndx = SHN_V850_SCOMMON; | |
1946 | else if (strcmp (input_sec->name, ".tcommon") == 0) | |
1947 | sym->st_shndx = SHN_V850_TCOMMON; | |
1948 | else if (strcmp (input_sec->name, ".zcommon") == 0) | |
1949 | sym->st_shndx = SHN_V850_ZCOMMON; | |
1950 | } | |
1951 | ||
1952 | return true; | |
1953 | } | |
1954 | ||
1955 | static boolean | |
1956 | v850_elf_section_from_shdr (abfd, hdr, name) | |
1957 | bfd * abfd; | |
1958 | Elf_Internal_Shdr * hdr; | |
1959 | char * name; | |
1960 | { | |
1961 | /* There ought to be a place to keep ELF backend specific flags, but | |
1962 | at the moment there isn't one. We just keep track of the | |
1963 | sections by their name, instead. */ | |
1964 | ||
1965 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1966 | return false; | |
1967 | ||
1968 | switch (hdr->sh_type) | |
1969 | { | |
1970 | case SHT_V850_SCOMMON: | |
1971 | case SHT_V850_TCOMMON: | |
1972 | case SHT_V850_ZCOMMON: | |
1973 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
1974 | (bfd_get_section_flags (abfd, | |
1975 | hdr->bfd_section) | |
1976 | | SEC_IS_COMMON))) | |
1977 | return false; | |
1978 | } | |
1979 | ||
1980 | return true; | |
1981 | } | |
1982 | ||
1983 | /* Set the correct type for a V850 ELF section. We do this by the | |
1984 | section name, which is a hack, but ought to work. */ | |
1985 | static boolean | |
1986 | v850_elf_fake_sections (abfd, hdr, sec) | |
1987 | bfd * abfd; | |
1988 | Elf32_Internal_Shdr * hdr; | |
1989 | asection * sec; | |
1990 | { | |
1991 | register const char * name; | |
1992 | ||
1993 | name = bfd_get_section_name (abfd, sec); | |
1994 | ||
1995 | if (strcmp (name, ".scommon") == 0) | |
1996 | { | |
1997 | hdr->sh_type = SHT_V850_SCOMMON; | |
1998 | } | |
1999 | else if (strcmp (name, ".tcommon") == 0) | |
2000 | { | |
2001 | hdr->sh_type = SHT_V850_TCOMMON; | |
2002 | } | |
2003 | else if (strcmp (name, ".zcommon") == 0) | |
2004 | hdr->sh_type = SHT_V850_ZCOMMON; | |
2005 | ||
2006 | return true; | |
2007 | } | |
2008 | ||
2009 | ||
8bef8c30 NC |
2010 | \f |
2011 | #define TARGET_LITTLE_SYM bfd_elf32_v850_vec | |
2012 | #define TARGET_LITTLE_NAME "elf32-v850" | |
2013 | #define ELF_ARCH bfd_arch_v850 | |
2014 | #define ELF_MACHINE_CODE EM_CYGNUS_V850 | |
de224d6a MM |
2015 | #define ELF_MAXPAGESIZE 0x1000 |
2016 | ||
197de3ba | 2017 | #define elf_info_to_howto v850_elf_info_to_howto_rela |
de224d6a | 2018 | #define elf_info_to_howto_rel v850_elf_info_to_howto_rel |
22a9f052 | 2019 | |
de224d6a MM |
2020 | #define elf_backend_check_relocs v850_elf_check_relocs |
2021 | #define elf_backend_relocate_section v850_elf_relocate_section | |
8988d935 | 2022 | #define elf_backend_object_p v850_elf_object_p |
8bef8c30 | 2023 | #define elf_backend_final_write_processing v850_elf_final_write_processing |
22a9f052 NC |
2024 | #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section |
2025 | #define elf_backend_symbol_processing v850_elf_symbol_processing | |
2026 | #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook | |
2027 | #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook | |
2028 | #define elf_backend_section_from_shdr v850_elf_section_from_shdr | |
2029 | #define elf_backend_fake_sections v850_elf_fake_sections | |
2030 | ||
8988d935 | 2031 | #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name |
de224d6a | 2032 | #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup |
8bef8c30 NC |
2033 | #define bfd_elf32_bfd_copy_private_bfd_data v850_elf_copy_private_bfd_data |
2034 | #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data | |
2035 | #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags | |
2036 | #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data | |
de224d6a MM |
2037 | |
2038 | #define elf_symbol_leading_char '_' | |
1336da39 | 2039 | |
01b49cb3 | 2040 | #include "elf32-target.h" |