Commit | Line | Data |
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252b5132 | 1 | /* V850-specific support for 32-bit ELF |
e460dd0d | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
c7e2358a | 3 | 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
252b5132 | 4 | |
86aba9db | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
86aba9db NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
86aba9db | 10 | (at your option) any later version. |
252b5132 | 11 | |
86aba9db NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
86aba9db NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
47b0e7ad NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
cd123cb7 | 22 | |
252b5132 | 23 | /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char |
86aba9db | 24 | dependencies. As is the gas & simulator code for the v850. */ |
252b5132 | 25 | |
252b5132 | 26 | #include "sysdep.h" |
3db64b00 | 27 | #include "bfd.h" |
252b5132 RH |
28 | #include "bfdlink.h" |
29 | #include "libbfd.h" | |
30 | #include "elf-bfd.h" | |
31 | #include "elf/v850.h" | |
e12dd2ea | 32 | #include "libiberty.h" |
252b5132 | 33 | |
e12dd2ea | 34 | /* Sign-extend a 24-bit number. */ |
dc810e39 | 35 | #define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000) |
435b1e90 | 36 | |
e460dd0d AM |
37 | static reloc_howto_type v850_elf_howto_table[]; |
38 | ||
252b5132 RH |
39 | /* Look through the relocs for a section during the first phase, and |
40 | allocate space in the global offset table or procedure linkage | |
41 | table. */ | |
42 | ||
b34976b6 | 43 | static bfd_boolean |
47b0e7ad NC |
44 | v850_elf_check_relocs (bfd *abfd, |
45 | struct bfd_link_info *info, | |
46 | asection *sec, | |
47 | const Elf_Internal_Rela *relocs) | |
252b5132 | 48 | { |
b34976b6 | 49 | bfd_boolean ret = TRUE; |
252b5132 RH |
50 | Elf_Internal_Shdr *symtab_hdr; |
51 | struct elf_link_hash_entry **sym_hashes; | |
52 | const Elf_Internal_Rela *rel; | |
53 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
54 | enum v850_reloc_type r_type; |
55 | int other = 0; | |
47b0e7ad | 56 | const char *common = NULL; |
252b5132 | 57 | |
1049f94e | 58 | if (info->relocatable) |
b34976b6 | 59 | return TRUE; |
252b5132 RH |
60 | |
61 | #ifdef DEBUG | |
d003868e AM |
62 | _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B", |
63 | sec, abfd); | |
252b5132 RH |
64 | #endif |
65 | ||
252b5132 RH |
66 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
67 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 RH |
68 | |
69 | rel_end = relocs + sec->reloc_count; | |
70 | for (rel = relocs; rel < rel_end; rel++) | |
71 | { | |
72 | unsigned long r_symndx; | |
73 | struct elf_link_hash_entry *h; | |
74 | ||
75 | r_symndx = ELF32_R_SYM (rel->r_info); | |
76 | if (r_symndx < symtab_hdr->sh_info) | |
77 | h = NULL; | |
78 | else | |
973a3492 L |
79 | { |
80 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
81 | while (h->root.type == bfd_link_hash_indirect | |
82 | || h->root.type == bfd_link_hash_warning) | |
83 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
84 | } | |
252b5132 RH |
85 | |
86 | r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info); | |
87 | switch (r_type) | |
88 | { | |
89 | default: | |
90 | case R_V850_NONE: | |
91 | case R_V850_9_PCREL: | |
92 | case R_V850_22_PCREL: | |
93 | case R_V850_HI16_S: | |
94 | case R_V850_HI16: | |
95 | case R_V850_LO16: | |
1e50d24d | 96 | case R_V850_LO16_SPLIT_OFFSET: |
e30ddb24 NC |
97 | case R_V850_ABS32: |
98 | case R_V850_REL32: | |
252b5132 RH |
99 | case R_V850_16: |
100 | case R_V850_8: | |
101 | case R_V850_CALLT_6_7_OFFSET: | |
102 | case R_V850_CALLT_16_16_OFFSET: | |
103 | break; | |
104 | ||
105 | /* This relocation describes the C++ object vtable hierarchy. | |
106 | Reconstruct it for later use during GC. */ | |
107 | case R_V850_GNU_VTINHERIT: | |
c152c796 | 108 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 109 | return FALSE; |
252b5132 RH |
110 | break; |
111 | ||
e12dd2ea NC |
112 | /* This relocation describes which C++ vtable entries |
113 | are actually used. Record for later use during GC. */ | |
252b5132 | 114 | case R_V850_GNU_VTENTRY: |
d17e0c6e JB |
115 | BFD_ASSERT (h != NULL); |
116 | if (h != NULL | |
117 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 118 | return FALSE; |
252b5132 RH |
119 | break; |
120 | ||
121 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
122 | case R_V850_SDA_16_16_OFFSET: | |
123 | case R_V850_SDA_15_16_OFFSET: | |
124 | other = V850_OTHER_SDA; | |
125 | common = ".scommon"; | |
126 | goto small_data_common; | |
435b1e90 | 127 | |
252b5132 RH |
128 | case R_V850_ZDA_16_16_SPLIT_OFFSET: |
129 | case R_V850_ZDA_16_16_OFFSET: | |
130 | case R_V850_ZDA_15_16_OFFSET: | |
131 | other = V850_OTHER_ZDA; | |
132 | common = ".zcommon"; | |
133 | goto small_data_common; | |
435b1e90 | 134 | |
252b5132 RH |
135 | case R_V850_TDA_4_5_OFFSET: |
136 | case R_V850_TDA_4_4_OFFSET: | |
137 | case R_V850_TDA_6_8_OFFSET: | |
138 | case R_V850_TDA_7_8_OFFSET: | |
139 | case R_V850_TDA_7_7_OFFSET: | |
140 | case R_V850_TDA_16_16_OFFSET: | |
141 | other = V850_OTHER_TDA; | |
142 | common = ".tcommon"; | |
143 | /* fall through */ | |
144 | ||
145 | #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA) | |
146 | ||
147 | small_data_common: | |
148 | if (h) | |
149 | { | |
e12dd2ea NC |
150 | /* Flag which type of relocation was used. */ |
151 | h->other |= other; | |
252b5132 RH |
152 | if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK) |
153 | && (h->other & V850_OTHER_ERROR) == 0) | |
154 | { | |
155 | const char * msg; | |
156 | static char buff[200]; /* XXX */ | |
157 | ||
158 | switch (h->other & V850_OTHER_MASK) | |
159 | { | |
160 | default: | |
161 | msg = _("Variable `%s' cannot occupy in multiple small data regions"); | |
162 | break; | |
163 | case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA: | |
164 | msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions"); | |
165 | break; | |
166 | case V850_OTHER_SDA | V850_OTHER_ZDA: | |
167 | msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously"); | |
168 | break; | |
169 | case V850_OTHER_SDA | V850_OTHER_TDA: | |
170 | msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously"); | |
171 | break; | |
172 | case V850_OTHER_ZDA | V850_OTHER_TDA: | |
173 | msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously"); | |
174 | break; | |
175 | } | |
176 | ||
177 | sprintf (buff, msg, h->root.root.string); | |
178 | info->callbacks->warning (info, buff, h->root.root.string, | |
dc810e39 AM |
179 | abfd, h->root.u.def.section, |
180 | (bfd_vma) 0); | |
252b5132 RH |
181 | |
182 | bfd_set_error (bfd_error_bad_value); | |
183 | h->other |= V850_OTHER_ERROR; | |
b34976b6 | 184 | ret = FALSE; |
252b5132 RH |
185 | } |
186 | } | |
187 | ||
188 | if (h && h->root.type == bfd_link_hash_common | |
189 | && h->root.u.c.p | |
190 | && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON")) | |
191 | { | |
e12dd2ea NC |
192 | asection * section; |
193 | ||
194 | section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common); | |
252b5132 RH |
195 | section->flags |= SEC_IS_COMMON; |
196 | } | |
197 | ||
198 | #ifdef DEBUG | |
199 | fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n", | |
200 | v850_elf_howto_table[ (int)r_type ].name, | |
201 | (h && h->root.root.string) ? h->root.root.string : "<unknown>", | |
202 | (h->root.type == bfd_link_hash_common) ? ", symbol is common" : ""); | |
203 | #endif | |
204 | break; | |
205 | } | |
206 | } | |
207 | ||
208 | return ret; | |
209 | } | |
210 | ||
e12dd2ea NC |
211 | /* In the old version, when an entry was checked out from the table, |
212 | it was deleted. This produced an error if the entry was needed | |
213 | more than once, as the second attempted retry failed. | |
214 | ||
215 | In the current version, the entry is not deleted, instead we set | |
b34976b6 | 216 | the field 'found' to TRUE. If a second lookup matches the same |
e12dd2ea NC |
217 | entry, then we know that the hi16s reloc has already been updated |
218 | and does not need to be updated a second time. | |
219 | ||
220 | TODO - TOFIX: If it is possible that we need to restore 2 different | |
221 | addresses from the same table entry, where the first generates an | |
222 | overflow, whilst the second do not, then this code will fail. */ | |
252b5132 RH |
223 | |
224 | typedef struct hi16s_location | |
225 | { | |
47b0e7ad NC |
226 | bfd_vma addend; |
227 | bfd_byte * address; | |
228 | unsigned long counter; | |
229 | bfd_boolean found; | |
230 | struct hi16s_location * next; | |
252b5132 RH |
231 | } |
232 | hi16s_location; | |
233 | ||
47b0e7ad NC |
234 | static hi16s_location * previous_hi16s; |
235 | static hi16s_location * free_hi16s; | |
236 | static unsigned long hi16s_counter; | |
252b5132 RH |
237 | |
238 | static void | |
47b0e7ad | 239 | remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address) |
252b5132 RH |
240 | { |
241 | hi16s_location * entry = NULL; | |
dc810e39 | 242 | bfd_size_type amt = sizeof (* free_hi16s); |
435b1e90 | 243 | |
252b5132 RH |
244 | /* Find a free structure. */ |
245 | if (free_hi16s == NULL) | |
47b0e7ad | 246 | free_hi16s = bfd_zalloc (abfd, amt); |
252b5132 RH |
247 | |
248 | entry = free_hi16s; | |
249 | free_hi16s = free_hi16s->next; | |
435b1e90 | 250 | |
252b5132 RH |
251 | entry->addend = addend; |
252 | entry->address = address; | |
253 | entry->counter = hi16s_counter ++; | |
b34976b6 | 254 | entry->found = FALSE; |
252b5132 RH |
255 | entry->next = previous_hi16s; |
256 | previous_hi16s = entry; | |
435b1e90 | 257 | |
252b5132 RH |
258 | /* Cope with wrap around of our counter. */ |
259 | if (hi16s_counter == 0) | |
260 | { | |
47b0e7ad | 261 | /* XXX: Assume that all counter entries differ only in their low 16 bits. */ |
252b5132 RH |
262 | for (entry = previous_hi16s; entry != NULL; entry = entry->next) |
263 | entry->counter &= 0xffff; | |
264 | ||
265 | hi16s_counter = 0x10000; | |
266 | } | |
252b5132 RH |
267 | } |
268 | ||
269 | static bfd_byte * | |
47b0e7ad | 270 | find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found) |
252b5132 | 271 | { |
b34976b6 AM |
272 | hi16s_location *match = NULL; |
273 | hi16s_location *entry; | |
b34976b6 | 274 | bfd_byte *addr; |
435b1e90 | 275 | |
252b5132 RH |
276 | /* Search the table. Record the most recent entry that matches. */ |
277 | for (entry = previous_hi16s; entry; entry = entry->next) | |
278 | { | |
279 | if (entry->addend == addend | |
280 | && (match == NULL || match->counter < entry->counter)) | |
281 | { | |
252b5132 RH |
282 | match = entry; |
283 | } | |
252b5132 RH |
284 | } |
285 | ||
286 | if (match == NULL) | |
287 | return NULL; | |
288 | ||
289 | /* Extract the address. */ | |
290 | addr = match->address; | |
291 | ||
4cc11e76 | 292 | /* Remember if this entry has already been used before. */ |
252b5132 RH |
293 | if (already_found) |
294 | * already_found = match->found; | |
295 | ||
296 | /* Note that this entry has now been used. */ | |
b34976b6 | 297 | match->found = TRUE; |
435b1e90 | 298 | |
252b5132 | 299 | return addr; |
435b1e90 | 300 | } |
252b5132 | 301 | |
1e50d24d RS |
302 | /* Calculate the final operand value for a R_V850_LO16 or |
303 | R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and | |
304 | ADDEND is the sum of the relocation symbol and offset. Store the | |
305 | operand value in *INSN and return true on success. | |
306 | ||
307 | The assembler has already done some of this: If the value stored in | |
308 | the instruction has its 15th bit set, (counting from zero) then the | |
309 | assembler will have added 1 to the value stored in the associated | |
310 | HI16S reloc. So for example, these relocations: | |
311 | ||
312 | movhi hi( fred ), r0, r1 | |
313 | movea lo( fred ), r1, r1 | |
314 | ||
315 | will store 0 in the value fields for the MOVHI and MOVEA instructions | |
316 | and addend will be the address of fred, but for these instructions: | |
317 | ||
318 | movhi hi( fred + 0x123456), r0, r1 | |
319 | movea lo( fred + 0x123456), r1, r1 | |
320 | ||
321 | the value stored in the MOVHI instruction will be 0x12 and the value | |
322 | stored in the MOVEA instruction will be 0x3456. If however the | |
323 | instructions were: | |
324 | ||
325 | movhi hi( fred + 0x10ffff), r0, r1 | |
326 | movea lo( fred + 0x10ffff), r1, r1 | |
327 | ||
328 | then the value stored in the MOVHI instruction would be 0x11 (not | |
329 | 0x10) and the value stored in the MOVEA instruction would be 0xffff. | |
330 | Thus (assuming for the moment that the addend is 0), at run time the | |
331 | MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction | |
332 | adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if | |
333 | the instructions were: | |
334 | ||
335 | movhi hi( fred - 1), r0, r1 | |
336 | movea lo( fred - 1), r1, r1 | |
337 | ||
338 | then 0 is stored in the MOVHI instruction and -1 is stored in the | |
339 | MOVEA instruction. | |
340 | ||
341 | Overflow can occur if the addition of the value stored in the | |
342 | instruction plus the addend sets the 15th bit when before it was clear. | |
343 | This is because the 15th bit will be sign extended into the high part, | |
344 | thus reducing its value by one, but since the 15th bit was originally | |
345 | clear, the assembler will not have added 1 to the previous HI16S reloc | |
346 | to compensate for this effect. For example: | |
347 | ||
348 | movhi hi( fred + 0x123456), r0, r1 | |
349 | movea lo( fred + 0x123456), r1, r1 | |
350 | ||
351 | The value stored in HI16S reloc is 0x12, the value stored in the LO16 | |
352 | reloc is 0x3456. If we assume that the address of fred is 0x00007000 | |
353 | then the relocations become: | |
354 | ||
355 | HI16S: 0x0012 + (0x00007000 >> 16) = 0x12 | |
356 | LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456 | |
357 | ||
358 | but when the instructions are executed, the MOVEA instruction's value | |
359 | is signed extended, so the sum becomes: | |
360 | ||
361 | 0x00120000 | |
362 | + 0xffffa456 | |
363 | ------------ | |
364 | 0x0011a456 but 'fred + 0x123456' = 0x0012a456 | |
365 | ||
366 | Note that if the 15th bit was set in the value stored in the LO16 | |
367 | reloc, then we do not have to do anything: | |
368 | ||
369 | movhi hi( fred + 0x10ffff), r0, r1 | |
370 | movea lo( fred + 0x10ffff), r1, r1 | |
371 | ||
372 | HI16S: 0x0011 + (0x00007000 >> 16) = 0x11 | |
373 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff | |
374 | ||
375 | 0x00110000 | |
376 | + 0x00006fff | |
377 | ------------ | |
378 | 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff | |
379 | ||
380 | Overflow can also occur if the computation carries into the 16th bit | |
381 | and it also results in the 15th bit having the same value as the 15th | |
382 | bit of the original value. What happens is that the HI16S reloc | |
383 | will have already examined the 15th bit of the original value and | |
384 | added 1 to the high part if the bit is set. This compensates for the | |
385 | sign extension of 15th bit of the result of the computation. But now | |
386 | there is a carry into the 16th bit, and this has not been allowed for. | |
387 | ||
388 | So, for example if fred is at address 0xf000: | |
389 | ||
390 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] | |
391 | movea lo( fred + 0xffff), r1, r1 | |
392 | ||
393 | HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001 | |
394 | LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost) | |
395 | ||
396 | 0x00010000 | |
397 | + 0xffffefff | |
398 | ------------ | |
399 | 0x0000efff but 'fred + 0xffff' = 0x0001efff | |
400 | ||
401 | Similarly, if the 15th bit remains clear, but overflow occurs into | |
402 | the 16th bit then (assuming the address of fred is 0xf000): | |
403 | ||
404 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] | |
405 | movea lo( fred + 0x7000), r1, r1 | |
406 | ||
407 | HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000 | |
408 | LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost) | |
409 | ||
410 | 0x00000000 | |
411 | + 0x00006fff | |
412 | ------------ | |
413 | 0x00006fff but 'fred + 0x7000' = 0x00016fff | |
414 | ||
415 | Note - there is no need to change anything if a carry occurs, and the | |
416 | 15th bit changes its value from being set to being clear, as the HI16S | |
417 | reloc will have already added in 1 to the high part for us: | |
418 | ||
419 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] | |
420 | movea lo( fred + 0xffff), r1, r1 | |
421 | ||
422 | HI16S: 0x0001 + (0x00007000 >> 16) | |
423 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost) | |
424 | ||
425 | 0x00010000 | |
426 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
427 | ------------ | |
428 | 0x00016fff which is right (assuming that fred is at 0x7000) | |
429 | ||
430 | but if the 15th bit goes from being clear to being set, then we must | |
431 | once again handle overflow: | |
432 | ||
433 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] | |
434 | movea lo( fred + 0x7000), r1, r1 | |
435 | ||
436 | HI16S: 0x0000 + (0x0000ffff >> 16) | |
437 | LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16) | |
438 | ||
439 | 0x00000000 | |
440 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
441 | ------------ | |
442 | 0x00006fff which is wrong (assuming that fred is at 0xffff). */ | |
443 | ||
444 | static bfd_boolean | |
445 | v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn, | |
446 | unsigned long addend) | |
447 | { | |
448 | #define BIT15_SET(x) ((x) & 0x8000) | |
449 | #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff) | |
47b0e7ad | 450 | |
1e50d24d RS |
451 | if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend)) |
452 | || (OVERFLOWS (addend, *insn) | |
453 | && ((! BIT15_SET (*insn)) || (BIT15_SET (addend))))) | |
454 | { | |
455 | bfd_boolean already_updated; | |
456 | bfd_byte *hi16s_address = find_remembered_hi16s_reloc | |
457 | (addend, & already_updated); | |
458 | ||
459 | /* Amend the matching HI16_S relocation. */ | |
460 | if (hi16s_address != NULL) | |
461 | { | |
462 | if (! already_updated) | |
463 | { | |
464 | unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address); | |
465 | hi_insn += 1; | |
466 | bfd_put_16 (abfd, hi_insn, hi16s_address); | |
467 | } | |
468 | } | |
469 | else | |
470 | { | |
471 | fprintf (stderr, _("FAILED to find previous HI16 reloc\n")); | |
472 | return FALSE; | |
473 | } | |
474 | } | |
475 | #undef OVERFLOWS | |
476 | #undef BIT15_SET | |
477 | ||
478 | /* Do not complain if value has top bit set, as this has been | |
479 | anticipated. */ | |
480 | *insn = (*insn + addend) & 0xffff; | |
481 | return TRUE; | |
482 | } | |
483 | ||
252b5132 | 484 | /* FIXME: The code here probably ought to be removed and the code in reloc.c |
4cc11e76 | 485 | allowed to do its stuff instead. At least for most of the relocs, anyway. */ |
e12dd2ea | 486 | |
252b5132 | 487 | static bfd_reloc_status_type |
47b0e7ad NC |
488 | v850_elf_perform_relocation (bfd *abfd, |
489 | unsigned int r_type, | |
490 | bfd_vma addend, | |
491 | bfd_byte *address) | |
252b5132 RH |
492 | { |
493 | unsigned long insn; | |
1e50d24d | 494 | unsigned long result; |
252b5132 | 495 | bfd_signed_vma saddend = (bfd_signed_vma) addend; |
435b1e90 | 496 | |
252b5132 RH |
497 | switch (r_type) |
498 | { | |
499 | default: | |
252b5132 | 500 | return bfd_reloc_notsupported; |
435b1e90 | 501 | |
e30ddb24 NC |
502 | case R_V850_REL32: |
503 | case R_V850_ABS32: | |
252b5132 RH |
504 | bfd_put_32 (abfd, addend, address); |
505 | return bfd_reloc_ok; | |
435b1e90 | 506 | |
252b5132 RH |
507 | case R_V850_22_PCREL: |
508 | if (saddend > 0x1fffff || saddend < -0x200000) | |
509 | return bfd_reloc_overflow; | |
435b1e90 | 510 | |
252b5132 RH |
511 | if ((addend % 2) != 0) |
512 | return bfd_reloc_dangerous; | |
435b1e90 | 513 | |
252b5132 RH |
514 | insn = bfd_get_32 (abfd, address); |
515 | insn &= ~0xfffe003f; | |
516 | insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16)); | |
dc810e39 | 517 | bfd_put_32 (abfd, (bfd_vma) insn, address); |
252b5132 | 518 | return bfd_reloc_ok; |
435b1e90 | 519 | |
252b5132 RH |
520 | case R_V850_9_PCREL: |
521 | if (saddend > 0xff || saddend < -0x100) | |
522 | return bfd_reloc_overflow; | |
435b1e90 | 523 | |
252b5132 RH |
524 | if ((addend % 2) != 0) |
525 | return bfd_reloc_dangerous; | |
435b1e90 | 526 | |
252b5132 RH |
527 | insn = bfd_get_16 (abfd, address); |
528 | insn &= ~ 0xf870; | |
529 | insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3); | |
530 | break; | |
435b1e90 | 531 | |
252b5132 RH |
532 | case R_V850_HI16: |
533 | addend += (bfd_get_16 (abfd, address) << 16); | |
534 | addend = (addend >> 16); | |
535 | insn = addend; | |
536 | break; | |
435b1e90 | 537 | |
252b5132 RH |
538 | case R_V850_HI16_S: |
539 | /* Remember where this relocation took place. */ | |
540 | remember_hi16s_reloc (abfd, addend, address); | |
541 | ||
542 | addend += (bfd_get_16 (abfd, address) << 16); | |
543 | addend = (addend >> 16) + ((addend & 0x8000) != 0); | |
435b1e90 KH |
544 | |
545 | /* This relocation cannot overflow. */ | |
4d421096 | 546 | if (addend > 0xffff) |
252b5132 | 547 | addend = 0; |
435b1e90 | 548 | |
252b5132 RH |
549 | insn = addend; |
550 | break; | |
435b1e90 | 551 | |
252b5132 | 552 | case R_V850_LO16: |
1e50d24d RS |
553 | insn = bfd_get_16 (abfd, address); |
554 | if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend)) | |
555 | return bfd_reloc_overflow; | |
556 | break; | |
252b5132 RH |
557 | |
558 | case R_V850_8: | |
559 | addend += (char) bfd_get_8 (abfd, address); | |
560 | ||
561 | saddend = (bfd_signed_vma) addend; | |
435b1e90 | 562 | |
252b5132 RH |
563 | if (saddend > 0x7f || saddend < -0x80) |
564 | return bfd_reloc_overflow; | |
565 | ||
566 | bfd_put_8 (abfd, addend, address); | |
567 | return bfd_reloc_ok; | |
568 | ||
569 | case R_V850_CALLT_16_16_OFFSET: | |
570 | addend += bfd_get_16 (abfd, address); | |
435b1e90 | 571 | |
252b5132 | 572 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 573 | |
252b5132 RH |
574 | if (saddend > 0xffff || saddend < 0) |
575 | return bfd_reloc_overflow; | |
576 | ||
577 | insn = addend; | |
578 | break; | |
435b1e90 | 579 | |
252b5132 | 580 | case R_V850_16: |
252b5132 RH |
581 | case R_V850_SDA_16_16_OFFSET: |
582 | case R_V850_ZDA_16_16_OFFSET: | |
583 | case R_V850_TDA_16_16_OFFSET: | |
584 | addend += bfd_get_16 (abfd, address); | |
435b1e90 | 585 | |
252b5132 | 586 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 587 | |
252b5132 RH |
588 | if (saddend > 0x7fff || saddend < -0x8000) |
589 | return bfd_reloc_overflow; | |
590 | ||
591 | insn = addend; | |
592 | break; | |
435b1e90 | 593 | |
252b5132 RH |
594 | case R_V850_SDA_15_16_OFFSET: |
595 | case R_V850_ZDA_15_16_OFFSET: | |
596 | insn = bfd_get_16 (abfd, address); | |
597 | addend += (insn & 0xfffe); | |
435b1e90 | 598 | |
252b5132 | 599 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 600 | |
252b5132 RH |
601 | if (saddend > 0x7ffe || saddend < -0x8000) |
602 | return bfd_reloc_overflow; | |
435b1e90 | 603 | |
252b5132 RH |
604 | if (addend & 1) |
605 | return bfd_reloc_dangerous; | |
435b1e90 | 606 | |
dc810e39 | 607 | insn = (addend &~ (bfd_vma) 1) | (insn & 1); |
252b5132 | 608 | break; |
435b1e90 | 609 | |
252b5132 RH |
610 | case R_V850_TDA_6_8_OFFSET: |
611 | insn = bfd_get_16 (abfd, address); | |
612 | addend += ((insn & 0x7e) << 1); | |
435b1e90 | 613 | |
252b5132 | 614 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 615 | |
252b5132 RH |
616 | if (saddend > 0xfc || saddend < 0) |
617 | return bfd_reloc_overflow; | |
435b1e90 | 618 | |
252b5132 RH |
619 | if (addend & 3) |
620 | return bfd_reloc_dangerous; | |
435b1e90 | 621 | |
252b5132 RH |
622 | insn &= 0xff81; |
623 | insn |= (addend >> 1); | |
624 | break; | |
435b1e90 | 625 | |
252b5132 RH |
626 | case R_V850_TDA_7_8_OFFSET: |
627 | insn = bfd_get_16 (abfd, address); | |
628 | addend += ((insn & 0x7f) << 1); | |
435b1e90 | 629 | |
252b5132 | 630 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 631 | |
252b5132 RH |
632 | if (saddend > 0xfe || saddend < 0) |
633 | return bfd_reloc_overflow; | |
435b1e90 | 634 | |
252b5132 RH |
635 | if (addend & 1) |
636 | return bfd_reloc_dangerous; | |
435b1e90 | 637 | |
252b5132 RH |
638 | insn &= 0xff80; |
639 | insn |= (addend >> 1); | |
640 | break; | |
435b1e90 | 641 | |
252b5132 RH |
642 | case R_V850_TDA_7_7_OFFSET: |
643 | insn = bfd_get_16 (abfd, address); | |
644 | addend += insn & 0x7f; | |
435b1e90 | 645 | |
252b5132 | 646 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 647 | |
252b5132 RH |
648 | if (saddend > 0x7f || saddend < 0) |
649 | return bfd_reloc_overflow; | |
435b1e90 | 650 | |
252b5132 RH |
651 | insn &= 0xff80; |
652 | insn |= addend; | |
653 | break; | |
435b1e90 | 654 | |
252b5132 RH |
655 | case R_V850_TDA_4_5_OFFSET: |
656 | insn = bfd_get_16 (abfd, address); | |
657 | addend += ((insn & 0xf) << 1); | |
435b1e90 | 658 | |
252b5132 | 659 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 660 | |
252b5132 RH |
661 | if (saddend > 0x1e || saddend < 0) |
662 | return bfd_reloc_overflow; | |
435b1e90 | 663 | |
252b5132 RH |
664 | if (addend & 1) |
665 | return bfd_reloc_dangerous; | |
435b1e90 | 666 | |
252b5132 RH |
667 | insn &= 0xfff0; |
668 | insn |= (addend >> 1); | |
669 | break; | |
435b1e90 | 670 | |
252b5132 RH |
671 | case R_V850_TDA_4_4_OFFSET: |
672 | insn = bfd_get_16 (abfd, address); | |
673 | addend += insn & 0xf; | |
435b1e90 | 674 | |
252b5132 | 675 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 676 | |
252b5132 RH |
677 | if (saddend > 0xf || saddend < 0) |
678 | return bfd_reloc_overflow; | |
435b1e90 | 679 | |
252b5132 RH |
680 | insn &= 0xfff0; |
681 | insn |= addend; | |
682 | break; | |
435b1e90 | 683 | |
1e50d24d RS |
684 | case R_V850_LO16_SPLIT_OFFSET: |
685 | insn = bfd_get_32 (abfd, address); | |
686 | result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5); | |
687 | if (! v850_elf_perform_lo16_relocation (abfd, &result, addend)) | |
688 | return bfd_reloc_overflow; | |
689 | insn = (((result << 16) & 0xfffe0000) | |
690 | | ((result << 5) & 0x20) | |
691 | | (insn & ~0xfffe0020)); | |
692 | bfd_put_32 (abfd, insn, address); | |
693 | return bfd_reloc_ok; | |
694 | ||
252b5132 RH |
695 | case R_V850_ZDA_16_16_SPLIT_OFFSET: |
696 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
697 | insn = bfd_get_32 (abfd, address); | |
698 | addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5); | |
435b1e90 | 699 | |
252b5132 | 700 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 701 | |
252b5132 RH |
702 | if (saddend > 0x7fff || saddend < -0x8000) |
703 | return bfd_reloc_overflow; | |
435b1e90 | 704 | |
252b5132 RH |
705 | insn &= 0x0001ffdf; |
706 | insn |= (addend & 1) << 5; | |
dc810e39 | 707 | insn |= (addend &~ (bfd_vma) 1) << 16; |
435b1e90 | 708 | |
dc810e39 | 709 | bfd_put_32 (abfd, (bfd_vma) insn, address); |
252b5132 | 710 | return bfd_reloc_ok; |
435b1e90 | 711 | |
252b5132 RH |
712 | case R_V850_CALLT_6_7_OFFSET: |
713 | insn = bfd_get_16 (abfd, address); | |
714 | addend += ((insn & 0x3f) << 1); | |
435b1e90 | 715 | |
252b5132 | 716 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 717 | |
252b5132 RH |
718 | if (saddend > 0x7e || saddend < 0) |
719 | return bfd_reloc_overflow; | |
435b1e90 | 720 | |
252b5132 RH |
721 | if (addend & 1) |
722 | return bfd_reloc_dangerous; | |
435b1e90 | 723 | |
252b5132 RH |
724 | insn &= 0xff80; |
725 | insn |= (addend >> 1); | |
726 | break; | |
727 | ||
728 | case R_V850_GNU_VTINHERIT: | |
729 | case R_V850_GNU_VTENTRY: | |
730 | return bfd_reloc_ok; | |
731 | ||
732 | } | |
733 | ||
dc810e39 | 734 | bfd_put_16 (abfd, (bfd_vma) insn, address); |
252b5132 RH |
735 | return bfd_reloc_ok; |
736 | } | |
252b5132 RH |
737 | \f |
738 | /* Insert the addend into the instruction. */ | |
e12dd2ea | 739 | |
252b5132 | 740 | static bfd_reloc_status_type |
47b0e7ad NC |
741 | v850_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
742 | arelent *reloc, | |
743 | asymbol *symbol, | |
744 | void * data ATTRIBUTE_UNUSED, | |
745 | asection *isection, | |
746 | bfd *obfd, | |
747 | char **err ATTRIBUTE_UNUSED) | |
252b5132 RH |
748 | { |
749 | long relocation; | |
435b1e90 | 750 | |
252b5132 RH |
751 | /* If there is an output BFD, |
752 | and the symbol is not a section name (which is only defined at final link time), | |
753 | and either we are not putting the addend into the instruction | |
e12dd2ea | 754 | or the addend is zero, so there is nothing to add into the instruction |
252b5132 | 755 | then just fixup the address and return. */ |
47b0e7ad | 756 | if (obfd != NULL |
252b5132 RH |
757 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
758 | && (! reloc->howto->partial_inplace | |
759 | || reloc->addend == 0)) | |
760 | { | |
761 | reloc->address += isection->output_offset; | |
762 | return bfd_reloc_ok; | |
763 | } | |
435b1e90 | 764 | |
252b5132 RH |
765 | /* Catch relocs involving undefined symbols. */ |
766 | if (bfd_is_und_section (symbol->section) | |
767 | && (symbol->flags & BSF_WEAK) == 0 | |
768 | && obfd == NULL) | |
769 | return bfd_reloc_undefined; | |
770 | ||
771 | /* We handle final linking of some relocs ourselves. */ | |
772 | ||
773 | /* Is the address of the relocation really within the section? */ | |
07515404 | 774 | if (reloc->address > bfd_get_section_limit (abfd, isection)) |
252b5132 | 775 | return bfd_reloc_outofrange; |
435b1e90 | 776 | |
4cc11e76 | 777 | /* Work out which section the relocation is targeted at and the |
252b5132 | 778 | initial relocation command value. */ |
435b1e90 | 779 | |
b34976b6 | 780 | if (reloc->howto->pc_relative) |
86aba9db NC |
781 | return bfd_reloc_ok; |
782 | ||
252b5132 RH |
783 | /* Get symbol value. (Common symbols are special.) */ |
784 | if (bfd_is_com_section (symbol->section)) | |
785 | relocation = 0; | |
786 | else | |
787 | relocation = symbol->value; | |
435b1e90 | 788 | |
252b5132 RH |
789 | /* Convert input-section-relative symbol value to absolute + addend. */ |
790 | relocation += symbol->section->output_section->vma; | |
791 | relocation += symbol->section->output_offset; | |
792 | relocation += reloc->addend; | |
435b1e90 | 793 | |
435b1e90 | 794 | reloc->addend = relocation; |
252b5132 RH |
795 | return bfd_reloc_ok; |
796 | } | |
86aba9db NC |
797 | |
798 | /* This function is used for relocs which are only used | |
799 | for relaxing, which the linker should otherwise ignore. */ | |
800 | ||
801 | static bfd_reloc_status_type | |
47b0e7ad NC |
802 | v850_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
803 | arelent *reloc_entry, | |
804 | asymbol *symbol ATTRIBUTE_UNUSED, | |
805 | void * data ATTRIBUTE_UNUSED, | |
806 | asection *input_section, | |
807 | bfd *output_bfd, | |
808 | char **error_message ATTRIBUTE_UNUSED) | |
86aba9db NC |
809 | { |
810 | if (output_bfd != NULL) | |
811 | reloc_entry->address += input_section->output_offset; | |
812 | ||
813 | return bfd_reloc_ok; | |
814 | } | |
47b0e7ad NC |
815 | /* Note: It is REQUIRED that the 'type' value of each entry |
816 | in this array match the index of the entry in the array. */ | |
817 | static reloc_howto_type v850_elf_howto_table[] = | |
818 | { | |
819 | /* This reloc does nothing. */ | |
820 | HOWTO (R_V850_NONE, /* Type. */ | |
821 | 0, /* Rightshift. */ | |
822 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
823 | 32, /* Bitsize. */ | |
824 | FALSE, /* PC_relative. */ | |
825 | 0, /* Bitpos. */ | |
826 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
827 | bfd_elf_generic_reloc, /* Special_function. */ | |
828 | "R_V850_NONE", /* Name. */ | |
829 | FALSE, /* Partial_inplace. */ | |
830 | 0, /* Src_mask. */ | |
831 | 0, /* Dst_mask. */ | |
832 | FALSE), /* PCrel_offset. */ | |
833 | ||
834 | /* A PC relative 9 bit branch. */ | |
835 | HOWTO (R_V850_9_PCREL, /* Type. */ | |
836 | 2, /* Rightshift. */ | |
837 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
838 | 26, /* Bitsize. */ | |
839 | TRUE, /* PC_relative. */ | |
840 | 0, /* Bitpos. */ | |
841 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
842 | v850_elf_reloc, /* Special_function. */ | |
843 | "R_V850_9_PCREL", /* Name. */ | |
844 | FALSE, /* Partial_inplace. */ | |
845 | 0x00ffffff, /* Src_mask. */ | |
846 | 0x00ffffff, /* Dst_mask. */ | |
847 | TRUE), /* PCrel_offset. */ | |
848 | ||
849 | /* A PC relative 22 bit branch. */ | |
850 | HOWTO (R_V850_22_PCREL, /* Type. */ | |
851 | 2, /* Rightshift. */ | |
852 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
853 | 22, /* Bitsize. */ | |
854 | TRUE, /* PC_relative. */ | |
855 | 7, /* Bitpos. */ | |
856 | complain_overflow_signed, /* Complain_on_overflow. */ | |
857 | v850_elf_reloc, /* Special_function. */ | |
858 | "R_V850_22_PCREL", /* Name. */ | |
859 | FALSE, /* Partial_inplace. */ | |
860 | 0x07ffff80, /* Src_mask. */ | |
861 | 0x07ffff80, /* Dst_mask. */ | |
862 | TRUE), /* PCrel_offset. */ | |
863 | ||
864 | /* High 16 bits of symbol value. */ | |
865 | HOWTO (R_V850_HI16_S, /* Type. */ | |
866 | 0, /* Rightshift. */ | |
867 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
868 | 16, /* Bitsize. */ | |
869 | FALSE, /* PC_relative. */ | |
870 | 0, /* Bitpos. */ | |
871 | complain_overflow_dont, /* Complain_on_overflow. */ | |
872 | v850_elf_reloc, /* Special_function. */ | |
873 | "R_V850_HI16_S", /* Name. */ | |
874 | FALSE, /* Partial_inplace. */ | |
875 | 0xffff, /* Src_mask. */ | |
876 | 0xffff, /* Dst_mask. */ | |
877 | FALSE), /* PCrel_offset. */ | |
878 | ||
879 | /* High 16 bits of symbol value. */ | |
880 | HOWTO (R_V850_HI16, /* Type. */ | |
881 | 0, /* Rightshift. */ | |
882 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
883 | 16, /* Bitsize. */ | |
884 | FALSE, /* PC_relative. */ | |
885 | 0, /* Bitpos. */ | |
886 | complain_overflow_dont, /* Complain_on_overflow. */ | |
887 | v850_elf_reloc, /* Special_function. */ | |
888 | "R_V850_HI16", /* Name. */ | |
889 | FALSE, /* Partial_inplace. */ | |
890 | 0xffff, /* Src_mask. */ | |
891 | 0xffff, /* Dst_mask. */ | |
892 | FALSE), /* PCrel_offset. */ | |
893 | ||
894 | /* Low 16 bits of symbol value. */ | |
895 | HOWTO (R_V850_LO16, /* Type. */ | |
896 | 0, /* Rightshift. */ | |
897 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
898 | 16, /* Bitsize. */ | |
899 | FALSE, /* PC_relative. */ | |
900 | 0, /* Bitpos. */ | |
901 | complain_overflow_dont, /* Complain_on_overflow. */ | |
902 | v850_elf_reloc, /* Special_function. */ | |
903 | "R_V850_LO16", /* Name. */ | |
904 | FALSE, /* Partial_inplace. */ | |
905 | 0xffff, /* Src_mask. */ | |
906 | 0xffff, /* Dst_mask. */ | |
907 | FALSE), /* PCrel_offset. */ | |
908 | ||
909 | /* Simple 32bit reloc. */ | |
910 | HOWTO (R_V850_ABS32, /* Type. */ | |
911 | 0, /* Rightshift. */ | |
912 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
913 | 32, /* Bitsize. */ | |
914 | FALSE, /* PC_relative. */ | |
915 | 0, /* Bitpos. */ | |
916 | complain_overflow_dont, /* Complain_on_overflow. */ | |
917 | v850_elf_reloc, /* Special_function. */ | |
918 | "R_V850_ABS32", /* Name. */ | |
919 | FALSE, /* Partial_inplace. */ | |
920 | 0xffffffff, /* Src_mask. */ | |
921 | 0xffffffff, /* Dst_mask. */ | |
922 | FALSE), /* PCrel_offset. */ | |
923 | ||
924 | /* Simple 16bit reloc. */ | |
925 | HOWTO (R_V850_16, /* Type. */ | |
926 | 0, /* Rightshift. */ | |
927 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
928 | 16, /* Bitsize. */ | |
929 | FALSE, /* PC_relative. */ | |
930 | 0, /* Bitpos. */ | |
931 | complain_overflow_dont, /* Complain_on_overflow. */ | |
932 | bfd_elf_generic_reloc, /* Special_function. */ | |
933 | "R_V850_16", /* Name. */ | |
934 | FALSE, /* Partial_inplace. */ | |
935 | 0xffff, /* Src_mask. */ | |
936 | 0xffff, /* Dst_mask. */ | |
937 | FALSE), /* PCrel_offset. */ | |
938 | ||
939 | /* Simple 8bit reloc. */ | |
940 | HOWTO (R_V850_8, /* Type. */ | |
941 | 0, /* Rightshift. */ | |
942 | 0, /* Size (0 = byte, 1 = short, 2 = long). */ | |
943 | 8, /* Bitsize. */ | |
944 | FALSE, /* PC_relative. */ | |
945 | 0, /* Bitpos. */ | |
946 | complain_overflow_dont, /* Complain_on_overflow. */ | |
947 | bfd_elf_generic_reloc, /* Special_function. */ | |
948 | "R_V850_8", /* Name. */ | |
949 | FALSE, /* Partial_inplace. */ | |
950 | 0xff, /* Src_mask. */ | |
951 | 0xff, /* Dst_mask. */ | |
952 | FALSE), /* PCrel_offset. */ | |
953 | ||
954 | /* 16 bit offset from the short data area pointer. */ | |
955 | HOWTO (R_V850_SDA_16_16_OFFSET, /* Type. */ | |
956 | 0, /* Rightshift. */ | |
957 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
958 | 16, /* Bitsize. */ | |
959 | FALSE, /* PC_relative. */ | |
960 | 0, /* Bitpos. */ | |
961 | complain_overflow_dont, /* Complain_on_overflow. */ | |
962 | v850_elf_reloc, /* Special_function. */ | |
963 | "R_V850_SDA_16_16_OFFSET", /* Name. */ | |
964 | FALSE, /* Partial_inplace. */ | |
965 | 0xffff, /* Src_mask. */ | |
966 | 0xffff, /* Dst_mask. */ | |
967 | FALSE), /* PCrel_offset. */ | |
968 | ||
969 | /* 15 bit offset from the short data area pointer. */ | |
970 | HOWTO (R_V850_SDA_15_16_OFFSET, /* Type. */ | |
971 | 1, /* Rightshift. */ | |
972 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
973 | 16, /* Bitsize. */ | |
974 | FALSE, /* PC_relative. */ | |
975 | 1, /* Bitpos. */ | |
976 | complain_overflow_dont, /* Complain_on_overflow. */ | |
977 | v850_elf_reloc, /* Special_function. */ | |
978 | "R_V850_SDA_15_16_OFFSET", /* Name. */ | |
979 | FALSE, /* Partial_inplace. */ | |
980 | 0xfffe, /* Src_mask. */ | |
981 | 0xfffe, /* Dst_mask. */ | |
982 | FALSE), /* PCrel_offset. */ | |
983 | ||
984 | /* 16 bit offset from the zero data area pointer. */ | |
985 | HOWTO (R_V850_ZDA_16_16_OFFSET, /* Type. */ | |
986 | 0, /* Rightshift. */ | |
987 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
988 | 16, /* Bitsize. */ | |
989 | FALSE, /* PC_relative. */ | |
990 | 0, /* Bitpos. */ | |
991 | complain_overflow_dont, /* Complain_on_overflow. */ | |
992 | v850_elf_reloc, /* Special_function. */ | |
993 | "R_V850_ZDA_16_16_OFFSET", /* Name. */ | |
994 | FALSE, /* Partial_inplace. */ | |
995 | 0xffff, /* Src_mask. */ | |
996 | 0xffff, /* Dst_mask. */ | |
997 | FALSE), /* PCrel_offset. */ | |
998 | ||
999 | /* 15 bit offset from the zero data area pointer. */ | |
1000 | HOWTO (R_V850_ZDA_15_16_OFFSET, /* Type. */ | |
1001 | 1, /* Rightshift. */ | |
1002 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1003 | 16, /* Bitsize. */ | |
1004 | FALSE, /* PC_relative. */ | |
1005 | 1, /* Bitpos. */ | |
1006 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1007 | v850_elf_reloc, /* Special_function. */ | |
1008 | "R_V850_ZDA_15_16_OFFSET", /* Name. */ | |
1009 | FALSE, /* Partial_inplace. */ | |
1010 | 0xfffe, /* Src_mask. */ | |
1011 | 0xfffe, /* Dst_mask. */ | |
1012 | FALSE), /* PCrel_offset. */ | |
1013 | ||
1014 | /* 6 bit offset from the tiny data area pointer. */ | |
1015 | HOWTO (R_V850_TDA_6_8_OFFSET, /* Type. */ | |
1016 | 2, /* Rightshift. */ | |
1017 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1018 | 8, /* Bitsize. */ | |
1019 | FALSE, /* PC_relative. */ | |
1020 | 1, /* Bitpos. */ | |
1021 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1022 | v850_elf_reloc, /* Special_function. */ | |
1023 | "R_V850_TDA_6_8_OFFSET", /* Name. */ | |
1024 | FALSE, /* Partial_inplace. */ | |
1025 | 0x7e, /* Src_mask. */ | |
1026 | 0x7e, /* Dst_mask. */ | |
1027 | FALSE), /* PCrel_offset. */ | |
1028 | ||
1029 | /* 8 bit offset from the tiny data area pointer. */ | |
1030 | HOWTO (R_V850_TDA_7_8_OFFSET, /* Type. */ | |
1031 | 1, /* Rightshift. */ | |
1032 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1033 | 8, /* Bitsize. */ | |
1034 | FALSE, /* PC_relative. */ | |
1035 | 0, /* Bitpos. */ | |
1036 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1037 | v850_elf_reloc, /* Special_function. */ | |
1038 | "R_V850_TDA_7_8_OFFSET", /* Name. */ | |
1039 | FALSE, /* Partial_inplace. */ | |
1040 | 0x7f, /* Src_mask. */ | |
1041 | 0x7f, /* Dst_mask. */ | |
1042 | FALSE), /* PCrel_offset. */ | |
1043 | ||
1044 | /* 7 bit offset from the tiny data area pointer. */ | |
1045 | HOWTO (R_V850_TDA_7_7_OFFSET, /* Type. */ | |
1046 | 0, /* Rightshift. */ | |
1047 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1048 | 7, /* Bitsize. */ | |
1049 | FALSE, /* PC_relative. */ | |
1050 | 0, /* Bitpos. */ | |
1051 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1052 | v850_elf_reloc, /* Special_function. */ | |
1053 | "R_V850_TDA_7_7_OFFSET", /* Name. */ | |
1054 | FALSE, /* Partial_inplace. */ | |
1055 | 0x7f, /* Src_mask. */ | |
1056 | 0x7f, /* Dst_mask. */ | |
1057 | FALSE), /* PCrel_offset. */ | |
1058 | ||
1059 | /* 16 bit offset from the tiny data area pointer! */ | |
1060 | HOWTO (R_V850_TDA_16_16_OFFSET, /* Type. */ | |
1061 | 0, /* Rightshift. */ | |
1062 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1063 | 16, /* Bitsize. */ | |
1064 | FALSE, /* PC_relative. */ | |
1065 | 0, /* Bitpos. */ | |
1066 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1067 | v850_elf_reloc, /* Special_function. */ | |
1068 | "R_V850_TDA_16_16_OFFSET", /* Name. */ | |
1069 | FALSE, /* Partial_inplace. */ | |
1070 | 0xffff, /* Src_mask. */ | |
1071 | 0xfff, /* Dst_mask. */ | |
1072 | FALSE), /* PCrel_offset. */ | |
1073 | ||
1074 | /* 5 bit offset from the tiny data area pointer. */ | |
1075 | HOWTO (R_V850_TDA_4_5_OFFSET, /* Type. */ | |
1076 | 1, /* Rightshift. */ | |
1077 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1078 | 5, /* Bitsize. */ | |
1079 | FALSE, /* PC_relative. */ | |
1080 | 0, /* Bitpos. */ | |
1081 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1082 | v850_elf_reloc, /* Special_function. */ | |
1083 | "R_V850_TDA_4_5_OFFSET", /* Name. */ | |
1084 | FALSE, /* Partial_inplace. */ | |
1085 | 0x0f, /* Src_mask. */ | |
1086 | 0x0f, /* Dst_mask. */ | |
1087 | FALSE), /* PCrel_offset. */ | |
1088 | ||
1089 | /* 4 bit offset from the tiny data area pointer. */ | |
1090 | HOWTO (R_V850_TDA_4_4_OFFSET, /* Type. */ | |
1091 | 0, /* Rightshift. */ | |
1092 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1093 | 4, /* Bitsize. */ | |
1094 | FALSE, /* PC_relative. */ | |
1095 | 0, /* Bitpos. */ | |
1096 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1097 | v850_elf_reloc, /* Special_function. */ | |
1098 | "R_V850_TDA_4_4_OFFSET", /* Name. */ | |
1099 | FALSE, /* Partial_inplace. */ | |
1100 | 0x0f, /* Src_mask. */ | |
1101 | 0x0f, /* Dst_mask. */ | |
1102 | FALSE), /* PCrel_offset. */ | |
1103 | ||
1104 | /* 16 bit offset from the short data area pointer. */ | |
1105 | HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* Type. */ | |
1106 | 0, /* Rightshift. */ | |
1107 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1108 | 16, /* Bitsize. */ | |
1109 | FALSE, /* PC_relative. */ | |
1110 | 0, /* Bitpos. */ | |
1111 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1112 | v850_elf_reloc, /* Special_function. */ | |
1113 | "R_V850_SDA_16_16_SPLIT_OFFSET",/* Name. */ | |
1114 | FALSE, /* Partial_inplace. */ | |
1115 | 0xfffe0020, /* Src_mask. */ | |
1116 | 0xfffe0020, /* Dst_mask. */ | |
1117 | FALSE), /* PCrel_offset. */ | |
1118 | ||
1119 | /* 16 bit offset from the zero data area pointer. */ | |
1120 | HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* Type. */ | |
1121 | 0, /* Rightshift. */ | |
1122 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1123 | 16, /* Bitsize. */ | |
1124 | FALSE, /* PC_relative. */ | |
1125 | 0, /* Bitpos. */ | |
1126 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1127 | v850_elf_reloc, /* Special_function. */ | |
1128 | "R_V850_ZDA_16_16_SPLIT_OFFSET",/* Name. */ | |
1129 | FALSE, /* Partial_inplace. */ | |
1130 | 0xfffe0020, /* Src_mask. */ | |
1131 | 0xfffe0020, /* Dst_mask. */ | |
1132 | FALSE), /* PCrel_offset. */ | |
1133 | ||
1134 | /* 6 bit offset from the call table base pointer. */ | |
1135 | HOWTO (R_V850_CALLT_6_7_OFFSET, /* Type. */ | |
1136 | 0, /* Rightshift. */ | |
1137 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1138 | 7, /* Bitsize. */ | |
1139 | FALSE, /* PC_relative. */ | |
1140 | 0, /* Bitpos. */ | |
1141 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1142 | v850_elf_reloc, /* Special_function. */ | |
1143 | "R_V850_CALLT_6_7_OFFSET", /* Name. */ | |
1144 | FALSE, /* Partial_inplace. */ | |
1145 | 0x3f, /* Src_mask. */ | |
1146 | 0x3f, /* Dst_mask. */ | |
1147 | FALSE), /* PCrel_offset. */ | |
1148 | ||
1149 | /* 16 bit offset from the call table base pointer. */ | |
1150 | HOWTO (R_V850_CALLT_16_16_OFFSET, /* Type. */ | |
1151 | 0, /* Rightshift. */ | |
1152 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1153 | 16, /* Bitsize. */ | |
1154 | FALSE, /* PC_relative. */ | |
1155 | 0, /* Bitpos. */ | |
1156 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1157 | v850_elf_reloc, /* Special_function. */ | |
1158 | "R_V850_CALLT_16_16_OFFSET", /* Name. */ | |
1159 | FALSE, /* Partial_inplace. */ | |
1160 | 0xffff, /* Src_mask. */ | |
1161 | 0xffff, /* Dst_mask. */ | |
1162 | FALSE), /* PCrel_offset. */ | |
1163 | ||
1164 | /* GNU extension to record C++ vtable hierarchy */ | |
1165 | HOWTO (R_V850_GNU_VTINHERIT, /* Type. */ | |
1166 | 0, /* Rightshift. */ | |
1167 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1168 | 0, /* Bitsize. */ | |
1169 | FALSE, /* PC_relative. */ | |
1170 | 0, /* Bitpos. */ | |
1171 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1172 | NULL, /* Special_function. */ | |
1173 | "R_V850_GNU_VTINHERIT", /* Name. */ | |
1174 | FALSE, /* Partial_inplace. */ | |
1175 | 0, /* Src_mask. */ | |
1176 | 0, /* Dst_mask. */ | |
1177 | FALSE), /* PCrel_offset. */ | |
1178 | ||
1179 | /* GNU extension to record C++ vtable member usage */ | |
1180 | HOWTO (R_V850_GNU_VTENTRY, /* Type. */ | |
1181 | 0, /* Rightshift. */ | |
1182 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1183 | 0, /* Bitsize. */ | |
1184 | FALSE, /* PC_relative. */ | |
1185 | 0, /* Bitpos. */ | |
1186 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1187 | _bfd_elf_rel_vtable_reloc_fn, /* Special_function. */ | |
1188 | "R_V850_GNU_VTENTRY", /* Name. */ | |
1189 | FALSE, /* Partial_inplace. */ | |
1190 | 0, /* Src_mask. */ | |
1191 | 0, /* Dst_mask. */ | |
1192 | FALSE), /* PCrel_offset. */ | |
1193 | ||
1194 | /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall | |
1195 | pseudo-op when it finds a function call which can be relaxed. */ | |
1196 | HOWTO (R_V850_LONGCALL, /* Type. */ | |
1197 | 0, /* Rightshift. */ | |
1198 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1199 | 32, /* Bitsize. */ | |
1200 | TRUE, /* PC_relative. */ | |
1201 | 0, /* Bitpos. */ | |
1202 | complain_overflow_signed, /* Complain_on_overflow. */ | |
1203 | v850_elf_ignore_reloc, /* Special_function. */ | |
1204 | "R_V850_LONGCALL", /* Name. */ | |
1205 | FALSE, /* Partial_inplace. */ | |
1206 | 0, /* Src_mask. */ | |
1207 | 0, /* Dst_mask. */ | |
1208 | TRUE), /* PCrel_offset. */ | |
1209 | ||
1210 | /* Indicates a .longjump pseudo-op. The compiler will generate a | |
1211 | .longjump pseudo-op when it finds a branch which can be relaxed. */ | |
1212 | HOWTO (R_V850_LONGJUMP, /* Type. */ | |
1213 | 0, /* Rightshift. */ | |
1214 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1215 | 32, /* Bitsize. */ | |
1216 | TRUE, /* PC_relative. */ | |
1217 | 0, /* Bitpos. */ | |
1218 | complain_overflow_signed, /* Complain_on_overflow. */ | |
1219 | v850_elf_ignore_reloc, /* Special_function. */ | |
1220 | "R_V850_LONGJUMP", /* Name. */ | |
1221 | FALSE, /* Partial_inplace. */ | |
1222 | 0, /* Src_mask. */ | |
1223 | 0, /* Dst_mask. */ | |
1224 | TRUE), /* PCrel_offset. */ | |
1225 | ||
1226 | HOWTO (R_V850_ALIGN, /* Type. */ | |
1227 | 0, /* Rightshift. */ | |
1228 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1229 | 0, /* Bitsize. */ | |
1230 | FALSE, /* PC_relative. */ | |
1231 | 0, /* Bitpos. */ | |
1232 | complain_overflow_unsigned, /* Complain_on_overflow. */ | |
1233 | v850_elf_ignore_reloc, /* Special_function. */ | |
1234 | "R_V850_ALIGN", /* Name. */ | |
1235 | FALSE, /* Partial_inplace. */ | |
1236 | 0, /* Src_mask. */ | |
1237 | 0, /* Dst_mask. */ | |
1238 | TRUE), /* PCrel_offset. */ | |
1239 | ||
1240 | /* Simple pc-relative 32bit reloc. */ | |
1241 | HOWTO (R_V850_REL32, /* Type. */ | |
1242 | 0, /* Rightshift. */ | |
1243 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1244 | 32, /* Bitsize. */ | |
1245 | TRUE, /* PC_relative. */ | |
1246 | 0, /* Bitpos. */ | |
1247 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1248 | v850_elf_reloc, /* Special_function. */ | |
1249 | "R_V850_REL32", /* Name. */ | |
1250 | FALSE, /* Partial_inplace. */ | |
1251 | 0xffffffff, /* Src_mask. */ | |
1252 | 0xffffffff, /* Dst_mask. */ | |
1253 | FALSE), /* PCrel_offset. */ | |
1254 | ||
1255 | /* An ld.bu version of R_V850_LO16. */ | |
1256 | HOWTO (R_V850_LO16_SPLIT_OFFSET, /* Type. */ | |
1257 | 0, /* Rightshift. */ | |
1258 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1259 | 16, /* Bitsize. */ | |
1260 | FALSE, /* PC_relative. */ | |
1261 | 0, /* Bitpos. */ | |
1262 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1263 | v850_elf_reloc, /* Special_function. */ | |
1264 | "R_V850_LO16_SPLIT_OFFSET", /* Name. */ | |
1265 | FALSE, /* Partial_inplace. */ | |
1266 | 0xfffe0020, /* Src_mask. */ | |
1267 | 0xfffe0020, /* Dst_mask. */ | |
1268 | FALSE), /* PCrel_offset. */ | |
1269 | }; | |
1270 | ||
1271 | /* Map BFD reloc types to V850 ELF reloc types. */ | |
1272 | ||
1273 | struct v850_elf_reloc_map | |
1274 | { | |
1275 | /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an | |
1276 | unsigned char. */ | |
1277 | bfd_reloc_code_real_type bfd_reloc_val; | |
1278 | unsigned int elf_reloc_val; | |
1279 | }; | |
1280 | ||
1281 | static const struct v850_elf_reloc_map v850_elf_reloc_map[] = | |
1282 | { | |
1283 | { BFD_RELOC_NONE, R_V850_NONE }, | |
1284 | { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL }, | |
1285 | { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL }, | |
1286 | { BFD_RELOC_HI16_S, R_V850_HI16_S }, | |
1287 | { BFD_RELOC_HI16, R_V850_HI16 }, | |
1288 | { BFD_RELOC_LO16, R_V850_LO16 }, | |
1289 | { BFD_RELOC_32, R_V850_ABS32 }, | |
1290 | { BFD_RELOC_32_PCREL, R_V850_REL32 }, | |
1291 | { BFD_RELOC_16, R_V850_16 }, | |
1292 | { BFD_RELOC_8, R_V850_8 }, | |
1293 | { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET }, | |
1294 | { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, | |
1295 | { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, | |
1296 | { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, | |
1297 | { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, | |
1298 | { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, | |
1299 | { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, | |
1300 | { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, | |
1301 | { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, | |
1302 | { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, | |
1303 | { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET }, | |
1304 | { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, | |
1305 | { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, | |
1306 | { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, | |
1307 | { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, | |
1308 | { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT }, | |
1309 | { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY }, | |
1310 | { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL }, | |
1311 | { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP }, | |
1312 | { BFD_RELOC_V850_ALIGN, R_V850_ALIGN }, | |
1313 | ||
1314 | }; | |
1315 | \f | |
1316 | /* Map a bfd relocation into the appropriate howto structure. */ | |
1317 | ||
1318 | static reloc_howto_type * | |
1319 | v850_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1320 | bfd_reloc_code_real_type code) | |
1321 | { | |
1322 | unsigned int i; | |
1323 | ||
1324 | for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;) | |
1325 | if (v850_elf_reloc_map[i].bfd_reloc_val == code) | |
1326 | { | |
1327 | unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val; | |
1328 | ||
1329 | BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val); | |
1330 | ||
1331 | return v850_elf_howto_table + elf_reloc_val; | |
1332 | } | |
1333 | ||
1334 | return NULL; | |
1335 | } | |
157090f7 AM |
1336 | |
1337 | static reloc_howto_type * | |
1338 | v850_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1339 | const char *r_name) | |
1340 | { | |
1341 | unsigned int i; | |
1342 | ||
1343 | for (i = 0; | |
1344 | i < sizeof (v850_elf_howto_table) / sizeof (v850_elf_howto_table[0]); | |
1345 | i++) | |
1346 | if (v850_elf_howto_table[i].name != NULL | |
1347 | && strcasecmp (v850_elf_howto_table[i].name, r_name) == 0) | |
1348 | return &v850_elf_howto_table[i]; | |
1349 | ||
1350 | return NULL; | |
1351 | } | |
47b0e7ad NC |
1352 | \f |
1353 | /* Set the howto pointer for an V850 ELF reloc. */ | |
1354 | ||
1355 | static void | |
1356 | v850_elf_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
1357 | arelent *cache_ptr, | |
1358 | Elf_Internal_Rela *dst) | |
1359 | { | |
1360 | unsigned int r_type; | |
1361 | ||
1362 | r_type = ELF32_R_TYPE (dst->r_info); | |
1363 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
1364 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
1365 | } | |
1366 | ||
1367 | /* Set the howto pointer for a V850 ELF reloc (type RELA). */ | |
1368 | ||
1369 | static void | |
1370 | v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, | |
1371 | arelent * cache_ptr, | |
1372 | Elf_Internal_Rela *dst) | |
1373 | { | |
1374 | unsigned int r_type; | |
1375 | ||
1376 | r_type = ELF32_R_TYPE (dst->r_info); | |
1377 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
1378 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
1379 | } | |
252b5132 | 1380 | \f |
b34976b6 | 1381 | static bfd_boolean |
47b0e7ad | 1382 | v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 RH |
1383 | { |
1384 | return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.')) | |
1385 | || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')); | |
1386 | } | |
252b5132 | 1387 | \f |
5cec6941 NC |
1388 | /* We overload some of the bfd_reloc error codes for own purposes. */ |
1389 | #define bfd_reloc_gp_not_found bfd_reloc_other | |
1390 | #define bfd_reloc_ep_not_found bfd_reloc_continue | |
1391 | #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1) | |
1392 | ||
252b5132 | 1393 | /* Perform a relocation as part of a final link. */ |
e12dd2ea | 1394 | |
252b5132 | 1395 | static bfd_reloc_status_type |
47b0e7ad NC |
1396 | v850_elf_final_link_relocate (reloc_howto_type *howto, |
1397 | bfd *input_bfd, | |
1398 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
1399 | asection *input_section, | |
1400 | bfd_byte *contents, | |
1401 | bfd_vma offset, | |
1402 | bfd_vma value, | |
1403 | bfd_vma addend, | |
1404 | struct bfd_link_info *info, | |
1405 | asection *sym_sec, | |
1406 | int is_local ATTRIBUTE_UNUSED) | |
252b5132 | 1407 | { |
b34976b6 AM |
1408 | unsigned int r_type = howto->type; |
1409 | bfd_byte *hit_data = contents + offset; | |
252b5132 RH |
1410 | |
1411 | /* Adjust the value according to the relocation. */ | |
1412 | switch (r_type) | |
1413 | { | |
1414 | case R_V850_9_PCREL: | |
1415 | value -= (input_section->output_section->vma | |
1416 | + input_section->output_offset); | |
1417 | value -= offset; | |
1418 | break; | |
435b1e90 | 1419 | |
252b5132 RH |
1420 | case R_V850_22_PCREL: |
1421 | value -= (input_section->output_section->vma | |
1422 | + input_section->output_offset | |
1423 | + offset); | |
1424 | ||
232fb1a3 NC |
1425 | /* If the sign extension will corrupt the value then we have overflowed. */ |
1426 | if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000)) | |
1427 | return bfd_reloc_overflow; | |
435b1e90 | 1428 | |
47b0e7ad | 1429 | /* Only the bottom 24 bits of the PC are valid. */ |
e12dd2ea | 1430 | value = SEXT24 (value); |
252b5132 | 1431 | break; |
435b1e90 | 1432 | |
e30ddb24 NC |
1433 | case R_V850_REL32: |
1434 | value -= (input_section->output_section->vma | |
1435 | + input_section->output_offset | |
1436 | + offset); | |
1437 | break; | |
1438 | ||
252b5132 RH |
1439 | case R_V850_HI16_S: |
1440 | case R_V850_HI16: | |
1441 | case R_V850_LO16: | |
1e50d24d | 1442 | case R_V850_LO16_SPLIT_OFFSET: |
252b5132 | 1443 | case R_V850_16: |
e30ddb24 | 1444 | case R_V850_ABS32: |
252b5132 RH |
1445 | case R_V850_8: |
1446 | break; | |
1447 | ||
435b1e90 | 1448 | case R_V850_ZDA_15_16_OFFSET: |
252b5132 RH |
1449 | case R_V850_ZDA_16_16_OFFSET: |
1450 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
1451 | if (sym_sec == NULL) | |
1452 | return bfd_reloc_undefined; | |
435b1e90 | 1453 | |
252b5132 RH |
1454 | value -= sym_sec->output_section->vma; |
1455 | break; | |
1456 | ||
1457 | case R_V850_SDA_15_16_OFFSET: | |
1458 | case R_V850_SDA_16_16_OFFSET: | |
1459 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
1460 | { | |
1461 | unsigned long gp; | |
1462 | struct bfd_link_hash_entry * h; | |
1463 | ||
1464 | if (sym_sec == NULL) | |
1465 | return bfd_reloc_undefined; | |
435b1e90 | 1466 | |
252b5132 | 1467 | /* Get the value of __gp. */ |
b34976b6 | 1468 | h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE); |
47b0e7ad | 1469 | if (h == NULL |
252b5132 | 1470 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1471 | return bfd_reloc_gp_not_found; |
252b5132 RH |
1472 | |
1473 | gp = (h->u.def.value | |
1474 | + h->u.def.section->output_section->vma | |
1475 | + h->u.def.section->output_offset); | |
1476 | ||
1477 | value -= sym_sec->output_section->vma; | |
1478 | value -= (gp - sym_sec->output_section->vma); | |
1479 | } | |
1480 | break; | |
1481 | ||
1482 | case R_V850_TDA_4_4_OFFSET: | |
1483 | case R_V850_TDA_4_5_OFFSET: | |
1484 | case R_V850_TDA_16_16_OFFSET: | |
1485 | case R_V850_TDA_7_7_OFFSET: | |
1486 | case R_V850_TDA_7_8_OFFSET: | |
1487 | case R_V850_TDA_6_8_OFFSET: | |
1488 | { | |
1489 | unsigned long ep; | |
1490 | struct bfd_link_hash_entry * h; | |
435b1e90 | 1491 | |
252b5132 | 1492 | /* Get the value of __ep. */ |
b34976b6 | 1493 | h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE); |
47b0e7ad | 1494 | if (h == NULL |
252b5132 | 1495 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1496 | return bfd_reloc_ep_not_found; |
252b5132 RH |
1497 | |
1498 | ep = (h->u.def.value | |
1499 | + h->u.def.section->output_section->vma | |
1500 | + h->u.def.section->output_offset); | |
1501 | ||
1502 | value -= ep; | |
1503 | } | |
1504 | break; | |
435b1e90 | 1505 | |
252b5132 RH |
1506 | case R_V850_CALLT_6_7_OFFSET: |
1507 | { | |
1508 | unsigned long ctbp; | |
1509 | struct bfd_link_hash_entry * h; | |
435b1e90 | 1510 | |
252b5132 | 1511 | /* Get the value of __ctbp. */ |
b34976b6 | 1512 | h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE); |
47b0e7ad | 1513 | if (h == NULL |
252b5132 | 1514 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1515 | return bfd_reloc_ctbp_not_found; |
252b5132 RH |
1516 | |
1517 | ctbp = (h->u.def.value | |
1518 | + h->u.def.section->output_section->vma | |
1519 | + h->u.def.section->output_offset); | |
1520 | value -= ctbp; | |
1521 | } | |
1522 | break; | |
435b1e90 | 1523 | |
252b5132 RH |
1524 | case R_V850_CALLT_16_16_OFFSET: |
1525 | { | |
1526 | unsigned long ctbp; | |
1527 | struct bfd_link_hash_entry * h; | |
1528 | ||
1529 | if (sym_sec == NULL) | |
1530 | return bfd_reloc_undefined; | |
435b1e90 | 1531 | |
252b5132 | 1532 | /* Get the value of __ctbp. */ |
b34976b6 | 1533 | h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE); |
47b0e7ad | 1534 | if (h == NULL |
252b5132 | 1535 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1536 | return bfd_reloc_ctbp_not_found; |
252b5132 RH |
1537 | |
1538 | ctbp = (h->u.def.value | |
1539 | + h->u.def.section->output_section->vma | |
1540 | + h->u.def.section->output_offset); | |
1541 | ||
1542 | value -= sym_sec->output_section->vma; | |
1543 | value -= (ctbp - sym_sec->output_section->vma); | |
1544 | } | |
1545 | break; | |
435b1e90 | 1546 | |
252b5132 RH |
1547 | case R_V850_NONE: |
1548 | case R_V850_GNU_VTINHERIT: | |
1549 | case R_V850_GNU_VTENTRY: | |
86aba9db NC |
1550 | case R_V850_LONGCALL: |
1551 | case R_V850_LONGJUMP: | |
1552 | case R_V850_ALIGN: | |
252b5132 RH |
1553 | return bfd_reloc_ok; |
1554 | ||
1555 | default: | |
1556 | return bfd_reloc_notsupported; | |
1557 | } | |
1558 | ||
1559 | /* Perform the relocation. */ | |
435b1e90 | 1560 | return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data); |
252b5132 | 1561 | } |
252b5132 RH |
1562 | \f |
1563 | /* Relocate an V850 ELF section. */ | |
e12dd2ea | 1564 | |
b34976b6 | 1565 | static bfd_boolean |
47b0e7ad NC |
1566 | v850_elf_relocate_section (bfd *output_bfd, |
1567 | struct bfd_link_info *info, | |
1568 | bfd *input_bfd, | |
1569 | asection *input_section, | |
1570 | bfd_byte *contents, | |
1571 | Elf_Internal_Rela *relocs, | |
1572 | Elf_Internal_Sym *local_syms, | |
1573 | asection **local_sections) | |
252b5132 | 1574 | { |
b34976b6 AM |
1575 | Elf_Internal_Shdr *symtab_hdr; |
1576 | struct elf_link_hash_entry **sym_hashes; | |
1577 | Elf_Internal_Rela *rel; | |
1578 | Elf_Internal_Rela *relend; | |
252b5132 RH |
1579 | |
1580 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
1581 | sym_hashes = elf_sym_hashes (input_bfd); | |
1582 | ||
252b5132 RH |
1583 | /* Reset the list of remembered HI16S relocs to empty. */ |
1584 | free_hi16s = previous_hi16s; | |
1585 | previous_hi16s = NULL; | |
1586 | hi16s_counter = 0; | |
435b1e90 | 1587 | |
252b5132 RH |
1588 | rel = relocs; |
1589 | relend = relocs + input_section->reloc_count; | |
1590 | for (; rel < relend; rel++) | |
1591 | { | |
b34976b6 AM |
1592 | int r_type; |
1593 | reloc_howto_type *howto; | |
1594 | unsigned long r_symndx; | |
1595 | Elf_Internal_Sym *sym; | |
1596 | asection *sec; | |
1597 | struct elf_link_hash_entry *h; | |
1598 | bfd_vma relocation; | |
1599 | bfd_reloc_status_type r; | |
252b5132 RH |
1600 | |
1601 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1602 | r_type = ELF32_R_TYPE (rel->r_info); | |
1603 | ||
1604 | if (r_type == R_V850_GNU_VTENTRY | |
1605 | || r_type == R_V850_GNU_VTINHERIT) | |
1606 | continue; | |
1607 | ||
f0fe0e16 | 1608 | howto = v850_elf_howto_table + r_type; |
252b5132 RH |
1609 | h = NULL; |
1610 | sym = NULL; | |
1611 | sec = NULL; | |
1612 | if (r_symndx < symtab_hdr->sh_info) | |
1613 | { | |
1614 | sym = local_syms + r_symndx; | |
1615 | sec = local_sections[r_symndx]; | |
8517fae7 | 1616 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1617 | } |
1618 | else | |
1619 | { | |
59c2e50f | 1620 | bfd_boolean unresolved_reloc, warned; |
435b1e90 | 1621 | |
47b0e7ad NC |
1622 | /* Note - this check is delayed until now as it is possible and |
1623 | valid to have a file without any symbols but with relocs that | |
1624 | can be processed. */ | |
641bd093 NC |
1625 | if (sym_hashes == NULL) |
1626 | { | |
1627 | info->callbacks->warning | |
1628 | (info, "no hash table available", | |
1629 | NULL, input_bfd, input_section, (bfd_vma) 0); | |
1630 | ||
1631 | return FALSE; | |
1632 | } | |
1633 | ||
b2a8e766 AM |
1634 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1635 | r_symndx, symtab_hdr, sym_hashes, | |
1636 | h, sec, relocation, | |
1637 | unresolved_reloc, warned); | |
252b5132 RH |
1638 | } |
1639 | ||
ab96bf03 AM |
1640 | if (sec != NULL && elf_discarded_section (sec)) |
1641 | { | |
1642 | /* For relocs against symbols from removed linkonce sections, | |
1643 | or sections discarded by a linker script, we just want the | |
1644 | section contents zeroed. Avoid any special processing. */ | |
1645 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1646 | rel->r_info = 0; | |
1647 | rel->r_addend = 0; | |
1648 | continue; | |
1649 | } | |
1650 | ||
1651 | if (info->relocatable) | |
1652 | continue; | |
1653 | ||
e12dd2ea | 1654 | /* FIXME: We should use the addend, but the COFF relocations don't. */ |
252b5132 RH |
1655 | r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1656 | input_section, | |
1657 | contents, rel->r_offset, | |
1658 | relocation, rel->r_addend, | |
1659 | info, sec, h == NULL); | |
1660 | ||
1661 | if (r != bfd_reloc_ok) | |
1662 | { | |
1663 | const char * name; | |
47b0e7ad | 1664 | const char * msg = NULL; |
252b5132 RH |
1665 | |
1666 | if (h != NULL) | |
1667 | name = h->root.root.string; | |
1668 | else | |
1669 | { | |
1670 | name = (bfd_elf_string_from_elf_section | |
1671 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1672 | if (name == NULL || *name == '\0') | |
1673 | name = bfd_section_name (input_bfd, sec); | |
1674 | } | |
1675 | ||
ceaf50a2 | 1676 | switch ((int) r) |
252b5132 RH |
1677 | { |
1678 | case bfd_reloc_overflow: | |
1679 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1680 | (info, (h ? &h->root : NULL), name, howto->name, |
1681 | (bfd_vma) 0, input_bfd, input_section, | |
1682 | rel->r_offset))) | |
b34976b6 | 1683 | return FALSE; |
252b5132 RH |
1684 | break; |
1685 | ||
1686 | case bfd_reloc_undefined: | |
1687 | if (! ((*info->callbacks->undefined_symbol) | |
1688 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1689 | rel->r_offset, TRUE))) |
1690 | return FALSE; | |
252b5132 RH |
1691 | break; |
1692 | ||
1693 | case bfd_reloc_outofrange: | |
1694 | msg = _("internal error: out of range error"); | |
1695 | goto common_error; | |
1696 | ||
1697 | case bfd_reloc_notsupported: | |
1698 | msg = _("internal error: unsupported relocation error"); | |
1699 | goto common_error; | |
1700 | ||
1701 | case bfd_reloc_dangerous: | |
1702 | msg = _("internal error: dangerous relocation"); | |
1703 | goto common_error; | |
1704 | ||
5cec6941 | 1705 | case bfd_reloc_gp_not_found: |
252b5132 RH |
1706 | msg = _("could not locate special linker symbol __gp"); |
1707 | goto common_error; | |
1708 | ||
5cec6941 | 1709 | case bfd_reloc_ep_not_found: |
252b5132 RH |
1710 | msg = _("could not locate special linker symbol __ep"); |
1711 | goto common_error; | |
1712 | ||
5cec6941 | 1713 | case bfd_reloc_ctbp_not_found: |
252b5132 RH |
1714 | msg = _("could not locate special linker symbol __ctbp"); |
1715 | goto common_error; | |
435b1e90 | 1716 | |
252b5132 RH |
1717 | default: |
1718 | msg = _("internal error: unknown error"); | |
1719 | /* fall through */ | |
1720 | ||
1721 | common_error: | |
1722 | if (!((*info->callbacks->warning) | |
1723 | (info, msg, name, input_bfd, input_section, | |
1724 | rel->r_offset))) | |
b34976b6 | 1725 | return FALSE; |
252b5132 RH |
1726 | break; |
1727 | } | |
1728 | } | |
1729 | } | |
1730 | ||
b34976b6 | 1731 | return TRUE; |
252b5132 RH |
1732 | } |
1733 | ||
252b5132 | 1734 | static asection * |
47b0e7ad | 1735 | v850_elf_gc_mark_hook (asection *sec, |
07adf181 | 1736 | struct bfd_link_info *info, |
47b0e7ad NC |
1737 | Elf_Internal_Rela *rel, |
1738 | struct elf_link_hash_entry *h, | |
1739 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1740 | { |
1741 | if (h != NULL) | |
07adf181 | 1742 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
1743 | { |
1744 | case R_V850_GNU_VTINHERIT: | |
1745 | case R_V850_GNU_VTENTRY: | |
07adf181 AM |
1746 | return NULL; |
1747 | } | |
9ad5cbcf | 1748 | |
07adf181 | 1749 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 | 1750 | } |
e12dd2ea | 1751 | |
252b5132 | 1752 | /* Set the right machine number. */ |
e12dd2ea | 1753 | |
b34976b6 | 1754 | static bfd_boolean |
47b0e7ad | 1755 | v850_elf_object_p (bfd *abfd) |
252b5132 RH |
1756 | { |
1757 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) | |
1758 | { | |
1759 | default: | |
250d94fd AM |
1760 | case E_V850_ARCH: |
1761 | bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850); | |
1762 | break; | |
1763 | case E_V850E_ARCH: | |
1764 | bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); | |
1765 | break; | |
8ad30312 NC |
1766 | case E_V850E1_ARCH: |
1767 | bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1); | |
1768 | break; | |
252b5132 | 1769 | } |
b34976b6 | 1770 | return TRUE; |
252b5132 RH |
1771 | } |
1772 | ||
1773 | /* Store the machine number in the flags field. */ | |
e12dd2ea | 1774 | |
252b5132 | 1775 | static void |
47b0e7ad NC |
1776 | v850_elf_final_write_processing (bfd *abfd, |
1777 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 RH |
1778 | { |
1779 | unsigned long val; | |
1780 | ||
1781 | switch (bfd_get_mach (abfd)) | |
1782 | { | |
b34976b6 | 1783 | default: |
47b0e7ad NC |
1784 | case bfd_mach_v850: val = E_V850_ARCH; break; |
1785 | case bfd_mach_v850e: val = E_V850E_ARCH; break; | |
1786 | case bfd_mach_v850e1: val = E_V850E1_ARCH; break; | |
252b5132 RH |
1787 | } |
1788 | ||
1789 | elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH; | |
1790 | elf_elfheader (abfd)->e_flags |= val; | |
1791 | } | |
1792 | ||
435b1e90 | 1793 | /* Function to keep V850 specific file flags. */ |
e12dd2ea | 1794 | |
b34976b6 | 1795 | static bfd_boolean |
47b0e7ad | 1796 | v850_elf_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
1797 | { |
1798 | BFD_ASSERT (!elf_flags_init (abfd) | |
1799 | || elf_elfheader (abfd)->e_flags == flags); | |
1800 | ||
1801 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1802 | elf_flags_init (abfd) = TRUE; |
1803 | return TRUE; | |
252b5132 RH |
1804 | } |
1805 | ||
e12dd2ea NC |
1806 | /* Merge backend specific data from an object file |
1807 | to the output object file when linking. */ | |
47b0e7ad | 1808 | |
b34976b6 | 1809 | static bfd_boolean |
47b0e7ad | 1810 | v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
1811 | { |
1812 | flagword out_flags; | |
1813 | flagword in_flags; | |
1814 | ||
1815 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1816 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1817 | return TRUE; |
252b5132 RH |
1818 | |
1819 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1820 | out_flags = elf_elfheader (obfd)->e_flags; | |
1821 | ||
1822 | if (! elf_flags_init (obfd)) | |
1823 | { | |
1824 | /* If the input is the default architecture then do not | |
1825 | bother setting the flags for the output architecture, | |
1826 | instead allow future merges to do this. If no future | |
1827 | merges ever set these flags then they will retain their | |
1828 | unitialised values, which surprise surprise, correspond | |
1829 | to the default values. */ | |
1830 | if (bfd_get_arch_info (ibfd)->the_default) | |
b34976b6 | 1831 | return TRUE; |
435b1e90 | 1832 | |
b34976b6 | 1833 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
1834 | elf_elfheader (obfd)->e_flags = in_flags; |
1835 | ||
1836 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1837 | && bfd_get_arch_info (obfd)->the_default) | |
e12dd2ea | 1838 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); |
252b5132 | 1839 | |
b34976b6 | 1840 | return TRUE; |
252b5132 RH |
1841 | } |
1842 | ||
1843 | /* Check flag compatibility. */ | |
1844 | if (in_flags == out_flags) | |
b34976b6 | 1845 | return TRUE; |
252b5132 RH |
1846 | |
1847 | if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH) | |
1848 | && (in_flags & EF_V850_ARCH) != E_V850_ARCH) | |
8ad30312 NC |
1849 | { |
1850 | /* Allow v850e1 binaries to be linked with v850e binaries. | |
1851 | Set the output binary to v850e. */ | |
1852 | if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH | |
1853 | && (out_flags & EF_V850_ARCH) == E_V850E_ARCH) | |
1854 | return TRUE; | |
1855 | ||
1856 | if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH | |
1857 | && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH) | |
1858 | { | |
1859 | elf_elfheader (obfd)->e_flags = | |
1860 | ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH); | |
1861 | return TRUE; | |
1862 | } | |
1863 | ||
d003868e AM |
1864 | _bfd_error_handler (_("%B: Architecture mismatch with previous modules"), |
1865 | ibfd); | |
8ad30312 | 1866 | } |
252b5132 | 1867 | |
b34976b6 | 1868 | return TRUE; |
252b5132 | 1869 | } |
e12dd2ea NC |
1870 | |
1871 | /* Display the flags field. */ | |
252b5132 | 1872 | |
b34976b6 | 1873 | static bfd_boolean |
47b0e7ad | 1874 | v850_elf_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 RH |
1875 | { |
1876 | FILE * file = (FILE *) ptr; | |
435b1e90 | 1877 | |
252b5132 | 1878 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
435b1e90 | 1879 | |
252b5132 | 1880 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
435b1e90 | 1881 | |
252b5132 RH |
1882 | /* xgettext:c-format */ |
1883 | fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags); | |
435b1e90 | 1884 | |
252b5132 RH |
1885 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) |
1886 | { | |
1887 | default: | |
1888 | case E_V850_ARCH: fprintf (file, _("v850 architecture")); break; | |
47b0e7ad | 1889 | case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break; |
8ad30312 | 1890 | case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break; |
252b5132 | 1891 | } |
435b1e90 | 1892 | |
252b5132 | 1893 | fputc ('\n', file); |
435b1e90 | 1894 | |
b34976b6 | 1895 | return TRUE; |
252b5132 RH |
1896 | } |
1897 | ||
1898 | /* V850 ELF uses four common sections. One is the usual one, and the | |
1899 | others are for (small) objects in one of the special data areas: | |
1900 | small, tiny and zero. All the objects are kept together, and then | |
1901 | referenced via the gp register, the ep register or the r0 register | |
1902 | respectively, which yields smaller, faster assembler code. This | |
1903 | approach is copied from elf32-mips.c. */ | |
1904 | ||
1905 | static asection v850_elf_scom_section; | |
1906 | static asymbol v850_elf_scom_symbol; | |
1907 | static asymbol * v850_elf_scom_symbol_ptr; | |
1908 | static asection v850_elf_tcom_section; | |
1909 | static asymbol v850_elf_tcom_symbol; | |
1910 | static asymbol * v850_elf_tcom_symbol_ptr; | |
1911 | static asection v850_elf_zcom_section; | |
1912 | static asymbol v850_elf_zcom_symbol; | |
1913 | static asymbol * v850_elf_zcom_symbol_ptr; | |
1914 | ||
e12dd2ea NC |
1915 | /* Given a BFD section, try to locate the |
1916 | corresponding ELF section index. */ | |
252b5132 | 1917 | |
b34976b6 | 1918 | static bfd_boolean |
47b0e7ad NC |
1919 | v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
1920 | asection *sec, | |
1921 | int *retval) | |
252b5132 RH |
1922 | { |
1923 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
1924 | *retval = SHN_V850_SCOMMON; | |
1925 | else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0) | |
1926 | *retval = SHN_V850_TCOMMON; | |
1927 | else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0) | |
1928 | *retval = SHN_V850_ZCOMMON; | |
1929 | else | |
b34976b6 | 1930 | return FALSE; |
435b1e90 | 1931 | |
b34976b6 | 1932 | return TRUE; |
252b5132 RH |
1933 | } |
1934 | ||
1935 | /* Handle the special V850 section numbers that a symbol may use. */ | |
1936 | ||
1937 | static void | |
47b0e7ad | 1938 | v850_elf_symbol_processing (bfd *abfd, asymbol *asym) |
252b5132 RH |
1939 | { |
1940 | elf_symbol_type * elfsym = (elf_symbol_type *) asym; | |
9ad5cbcf | 1941 | unsigned int indx; |
435b1e90 | 1942 | |
9ad5cbcf | 1943 | indx = elfsym->internal_elf_sym.st_shndx; |
252b5132 RH |
1944 | |
1945 | /* If the section index is an "ordinary" index, then it may | |
1946 | refer to a v850 specific section created by the assembler. | |
1947 | Check the section's type and change the index it matches. | |
435b1e90 | 1948 | |
252b5132 | 1949 | FIXME: Should we alter the st_shndx field as well ? */ |
435b1e90 | 1950 | |
9ad5cbcf AM |
1951 | if (indx < elf_numsections (abfd)) |
1952 | switch (elf_elfsections(abfd)[indx]->sh_type) | |
252b5132 RH |
1953 | { |
1954 | case SHT_V850_SCOMMON: | |
9ad5cbcf | 1955 | indx = SHN_V850_SCOMMON; |
252b5132 | 1956 | break; |
435b1e90 | 1957 | |
252b5132 | 1958 | case SHT_V850_TCOMMON: |
9ad5cbcf | 1959 | indx = SHN_V850_TCOMMON; |
252b5132 | 1960 | break; |
435b1e90 | 1961 | |
252b5132 | 1962 | case SHT_V850_ZCOMMON: |
9ad5cbcf | 1963 | indx = SHN_V850_ZCOMMON; |
252b5132 | 1964 | break; |
435b1e90 | 1965 | |
252b5132 RH |
1966 | default: |
1967 | break; | |
1968 | } | |
435b1e90 | 1969 | |
9ad5cbcf | 1970 | switch (indx) |
252b5132 RH |
1971 | { |
1972 | case SHN_V850_SCOMMON: | |
1973 | if (v850_elf_scom_section.name == NULL) | |
1974 | { | |
1975 | /* Initialize the small common section. */ | |
1976 | v850_elf_scom_section.name = ".scommon"; | |
1977 | v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA; | |
1978 | v850_elf_scom_section.output_section = & v850_elf_scom_section; | |
1979 | v850_elf_scom_section.symbol = & v850_elf_scom_symbol; | |
1980 | v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr; | |
1981 | v850_elf_scom_symbol.name = ".scommon"; | |
1982 | v850_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
1983 | v850_elf_scom_symbol.section = & v850_elf_scom_section; | |
1984 | v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol; | |
1985 | } | |
1986 | asym->section = & v850_elf_scom_section; | |
1987 | asym->value = elfsym->internal_elf_sym.st_size; | |
1988 | break; | |
435b1e90 | 1989 | |
252b5132 RH |
1990 | case SHN_V850_TCOMMON: |
1991 | if (v850_elf_tcom_section.name == NULL) | |
1992 | { | |
1993 | /* Initialize the tcommon section. */ | |
1994 | v850_elf_tcom_section.name = ".tcommon"; | |
1995 | v850_elf_tcom_section.flags = SEC_IS_COMMON; | |
1996 | v850_elf_tcom_section.output_section = & v850_elf_tcom_section; | |
1997 | v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol; | |
1998 | v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr; | |
1999 | v850_elf_tcom_symbol.name = ".tcommon"; | |
2000 | v850_elf_tcom_symbol.flags = BSF_SECTION_SYM; | |
2001 | v850_elf_tcom_symbol.section = & v850_elf_tcom_section; | |
2002 | v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol; | |
2003 | } | |
2004 | asym->section = & v850_elf_tcom_section; | |
2005 | asym->value = elfsym->internal_elf_sym.st_size; | |
2006 | break; | |
2007 | ||
2008 | case SHN_V850_ZCOMMON: | |
2009 | if (v850_elf_zcom_section.name == NULL) | |
2010 | { | |
2011 | /* Initialize the zcommon section. */ | |
2012 | v850_elf_zcom_section.name = ".zcommon"; | |
2013 | v850_elf_zcom_section.flags = SEC_IS_COMMON; | |
2014 | v850_elf_zcom_section.output_section = & v850_elf_zcom_section; | |
2015 | v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol; | |
2016 | v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr; | |
2017 | v850_elf_zcom_symbol.name = ".zcommon"; | |
2018 | v850_elf_zcom_symbol.flags = BSF_SECTION_SYM; | |
2019 | v850_elf_zcom_symbol.section = & v850_elf_zcom_section; | |
2020 | v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol; | |
2021 | } | |
2022 | asym->section = & v850_elf_zcom_section; | |
2023 | asym->value = elfsym->internal_elf_sym.st_size; | |
2024 | break; | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | /* Hook called by the linker routine which adds symbols from an object | |
2029 | file. We must handle the special v850 section numbers here. */ | |
2030 | ||
b34976b6 | 2031 | static bfd_boolean |
47b0e7ad NC |
2032 | v850_elf_add_symbol_hook (bfd *abfd, |
2033 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2034 | Elf_Internal_Sym *sym, | |
2035 | const char **namep ATTRIBUTE_UNUSED, | |
2036 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2037 | asection **secp, | |
2038 | bfd_vma *valp) | |
252b5132 | 2039 | { |
9ad5cbcf | 2040 | unsigned int indx = sym->st_shndx; |
435b1e90 | 2041 | |
252b5132 RH |
2042 | /* If the section index is an "ordinary" index, then it may |
2043 | refer to a v850 specific section created by the assembler. | |
2044 | Check the section's type and change the index it matches. | |
435b1e90 | 2045 | |
252b5132 | 2046 | FIXME: Should we alter the st_shndx field as well ? */ |
435b1e90 | 2047 | |
9ad5cbcf AM |
2048 | if (indx < elf_numsections (abfd)) |
2049 | switch (elf_elfsections(abfd)[indx]->sh_type) | |
252b5132 RH |
2050 | { |
2051 | case SHT_V850_SCOMMON: | |
9ad5cbcf | 2052 | indx = SHN_V850_SCOMMON; |
252b5132 | 2053 | break; |
435b1e90 | 2054 | |
252b5132 | 2055 | case SHT_V850_TCOMMON: |
9ad5cbcf | 2056 | indx = SHN_V850_TCOMMON; |
252b5132 | 2057 | break; |
435b1e90 | 2058 | |
252b5132 | 2059 | case SHT_V850_ZCOMMON: |
9ad5cbcf | 2060 | indx = SHN_V850_ZCOMMON; |
252b5132 | 2061 | break; |
435b1e90 | 2062 | |
252b5132 RH |
2063 | default: |
2064 | break; | |
2065 | } | |
435b1e90 | 2066 | |
9ad5cbcf | 2067 | switch (indx) |
252b5132 RH |
2068 | { |
2069 | case SHN_V850_SCOMMON: | |
2070 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
2071 | (*secp)->flags |= SEC_IS_COMMON; | |
2072 | *valp = sym->st_size; | |
2073 | break; | |
435b1e90 | 2074 | |
252b5132 RH |
2075 | case SHN_V850_TCOMMON: |
2076 | *secp = bfd_make_section_old_way (abfd, ".tcommon"); | |
2077 | (*secp)->flags |= SEC_IS_COMMON; | |
2078 | *valp = sym->st_size; | |
2079 | break; | |
435b1e90 | 2080 | |
252b5132 RH |
2081 | case SHN_V850_ZCOMMON: |
2082 | *secp = bfd_make_section_old_way (abfd, ".zcommon"); | |
2083 | (*secp)->flags |= SEC_IS_COMMON; | |
2084 | *valp = sym->st_size; | |
2085 | break; | |
2086 | } | |
2087 | ||
b34976b6 | 2088 | return TRUE; |
252b5132 RH |
2089 | } |
2090 | ||
6e0b88f1 | 2091 | static int |
47b0e7ad NC |
2092 | v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2093 | const char *name ATTRIBUTE_UNUSED, | |
2094 | Elf_Internal_Sym *sym, | |
2095 | asection *input_sec, | |
3dd2d30b | 2096 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
252b5132 RH |
2097 | { |
2098 | /* If we see a common symbol, which implies a relocatable link, then | |
2099 | if a symbol was in a special common section in an input file, mark | |
2100 | it as a special common in the output file. */ | |
435b1e90 | 2101 | |
252b5132 RH |
2102 | if (sym->st_shndx == SHN_COMMON) |
2103 | { | |
2104 | if (strcmp (input_sec->name, ".scommon") == 0) | |
2105 | sym->st_shndx = SHN_V850_SCOMMON; | |
2106 | else if (strcmp (input_sec->name, ".tcommon") == 0) | |
2107 | sym->st_shndx = SHN_V850_TCOMMON; | |
2108 | else if (strcmp (input_sec->name, ".zcommon") == 0) | |
2109 | sym->st_shndx = SHN_V850_ZCOMMON; | |
2110 | } | |
2111 | ||
d4c87fc1 AM |
2112 | /* The price we pay for using h->other unused bits as flags in the |
2113 | linker is cleaning up after ourselves. */ | |
3dd2d30b AM |
2114 | |
2115 | sym->st_other &= ~(V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA | |
2116 | | V850_OTHER_ERROR); | |
d4c87fc1 | 2117 | |
6e0b88f1 | 2118 | return 1; |
252b5132 RH |
2119 | } |
2120 | ||
b34976b6 | 2121 | static bfd_boolean |
6dc132d9 L |
2122 | v850_elf_section_from_shdr (bfd *abfd, |
2123 | Elf_Internal_Shdr *hdr, | |
2124 | const char *name, | |
2125 | int shindex) | |
252b5132 RH |
2126 | { |
2127 | /* There ought to be a place to keep ELF backend specific flags, but | |
2128 | at the moment there isn't one. We just keep track of the | |
2129 | sections by their name, instead. */ | |
2130 | ||
6dc132d9 | 2131 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2132 | return FALSE; |
252b5132 RH |
2133 | |
2134 | switch (hdr->sh_type) | |
2135 | { | |
2136 | case SHT_V850_SCOMMON: | |
2137 | case SHT_V850_TCOMMON: | |
2138 | case SHT_V850_ZCOMMON: | |
2139 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
2140 | (bfd_get_section_flags (abfd, | |
2141 | hdr->bfd_section) | |
2142 | | SEC_IS_COMMON))) | |
b34976b6 | 2143 | return FALSE; |
252b5132 RH |
2144 | } |
2145 | ||
b34976b6 | 2146 | return TRUE; |
252b5132 RH |
2147 | } |
2148 | ||
e12dd2ea NC |
2149 | /* Set the correct type for a V850 ELF section. We do this |
2150 | by the section name, which is a hack, but ought to work. */ | |
2151 | ||
b34976b6 | 2152 | static bfd_boolean |
47b0e7ad NC |
2153 | v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2154 | Elf_Internal_Shdr *hdr, | |
2155 | asection *sec) | |
252b5132 | 2156 | { |
47b0e7ad | 2157 | const char * name; |
252b5132 RH |
2158 | |
2159 | name = bfd_get_section_name (abfd, sec); | |
2160 | ||
2161 | if (strcmp (name, ".scommon") == 0) | |
47b0e7ad | 2162 | hdr->sh_type = SHT_V850_SCOMMON; |
252b5132 | 2163 | else if (strcmp (name, ".tcommon") == 0) |
47b0e7ad | 2164 | hdr->sh_type = SHT_V850_TCOMMON; |
252b5132 RH |
2165 | else if (strcmp (name, ".zcommon") == 0) |
2166 | hdr->sh_type = SHT_V850_ZCOMMON; | |
435b1e90 | 2167 | |
b34976b6 | 2168 | return TRUE; |
252b5132 | 2169 | } |
86aba9db NC |
2170 | |
2171 | /* Delete some bytes from a section while relaxing. */ | |
2172 | ||
b34976b6 | 2173 | static bfd_boolean |
47b0e7ad NC |
2174 | v850_elf_relax_delete_bytes (bfd *abfd, |
2175 | asection *sec, | |
2176 | bfd_vma addr, | |
2177 | bfd_vma toaddr, | |
2178 | int count) | |
86aba9db | 2179 | { |
b34976b6 AM |
2180 | Elf_Internal_Shdr *symtab_hdr; |
2181 | Elf32_External_Sym *extsyms; | |
2182 | Elf32_External_Sym *esym; | |
2183 | Elf32_External_Sym *esymend; | |
91d6fa6a | 2184 | int sym_index; |
b34976b6 AM |
2185 | unsigned int sec_shndx; |
2186 | bfd_byte *contents; | |
2187 | Elf_Internal_Rela *irel; | |
2188 | Elf_Internal_Rela *irelend; | |
2189 | struct elf_link_hash_entry *sym_hash; | |
2190 | Elf_Internal_Shdr *shndx_hdr; | |
2191 | Elf_External_Sym_Shndx *shndx; | |
86aba9db NC |
2192 | |
2193 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2194 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
2195 | ||
2196 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
2197 | ||
2198 | contents = elf_section_data (sec)->this_hdr.contents; | |
2199 | ||
2200 | /* The deletion must stop at the next ALIGN reloc for an alignment | |
2201 | power larger than the number of bytes we are deleting. */ | |
2202 | ||
2203 | /* Actually delete the bytes. */ | |
2204 | #if (DEBUG_RELAX & 2) | |
2205 | fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n", | |
2206 | sec->name, addr, toaddr, count ); | |
2207 | #endif | |
2208 | memmove (contents + addr, contents + addr + count, | |
2209 | toaddr - addr - count); | |
2210 | memset (contents + toaddr-count, 0, count); | |
2211 | ||
2212 | /* Adjust all the relocs. */ | |
2213 | irel = elf_section_data (sec)->relocs; | |
2214 | irelend = irel + sec->reloc_count; | |
2215 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
2216 | shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents; | |
2217 | ||
2218 | for (; irel < irelend; irel++) | |
2219 | { | |
2220 | bfd_vma raddr, paddr, symval; | |
2221 | Elf_Internal_Sym isym; | |
2222 | ||
2223 | /* Get the new reloc address. */ | |
2224 | raddr = irel->r_offset; | |
2225 | if ((raddr >= (addr + count) && raddr < toaddr)) | |
b34976b6 | 2226 | irel->r_offset -= count; |
86aba9db NC |
2227 | |
2228 | if (raddr >= addr && raddr < addr + count) | |
2229 | { | |
2230 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2231 | (int) R_V850_NONE); | |
2232 | continue; | |
2233 | } | |
b34976b6 | 2234 | |
86aba9db NC |
2235 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN) |
2236 | continue; | |
2237 | ||
2238 | bfd_elf32_swap_symbol_in (abfd, | |
2239 | extsyms + ELF32_R_SYM (irel->r_info), | |
2240 | shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL, | |
2241 | & isym); | |
b34976b6 | 2242 | |
86aba9db NC |
2243 | if (isym.st_shndx != sec_shndx) |
2244 | continue; | |
2245 | ||
2246 | /* Get the value of the symbol referred to by the reloc. */ | |
2247 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2248 | { | |
2249 | symval = isym.st_value; | |
2250 | #if (DEBUG_RELAX & 2) | |
2251 | { | |
2252 | char * name = bfd_elf_string_from_elf_section | |
2253 | (abfd, symtab_hdr->sh_link, isym.st_name); | |
2254 | fprintf (stderr, | |
2255 | "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", | |
2256 | sec->name, name, isym.st_name, | |
2257 | sec->output_section->vma, sec->output_offset, | |
2258 | isym.st_value, irel->r_addend); | |
2259 | } | |
2260 | #endif | |
2261 | } | |
2262 | else | |
2263 | { | |
2264 | unsigned long indx; | |
2265 | struct elf_link_hash_entry * h; | |
2266 | ||
2267 | /* An external symbol. */ | |
2268 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2269 | ||
2270 | h = elf_sym_hashes (abfd) [indx]; | |
2271 | BFD_ASSERT (h != NULL); | |
2272 | ||
2273 | symval = h->root.u.def.value; | |
2274 | #if (DEBUG_RELAX & 2) | |
2275 | fprintf (stderr, | |
2276 | "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n", | |
2277 | sec->name, h->root.root.string, h->root.u.def.value, | |
2278 | sec->output_section->vma, sec->output_offset, irel->r_addend); | |
2279 | #endif | |
2280 | } | |
b34976b6 | 2281 | |
86aba9db | 2282 | paddr = symval + irel->r_addend; |
b34976b6 | 2283 | |
86aba9db NC |
2284 | if ( (symval >= addr + count && symval < toaddr) |
2285 | && (paddr < addr + count || paddr >= toaddr)) | |
2286 | irel->r_addend += count; | |
2287 | else if ( (symval < addr + count || symval >= toaddr) | |
2288 | && (paddr >= addr + count && paddr < toaddr)) | |
2289 | irel->r_addend -= count; | |
2290 | } | |
2291 | ||
2292 | /* Adjust the local symbols defined in this section. */ | |
2293 | esym = extsyms; | |
2294 | esymend = esym + symtab_hdr->sh_info; | |
2295 | ||
2296 | for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL)) | |
2297 | { | |
2298 | Elf_Internal_Sym isym; | |
2299 | ||
2300 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym); | |
2301 | ||
2302 | if (isym.st_shndx == sec_shndx | |
2303 | && isym.st_value >= addr + count | |
2304 | && isym.st_value < toaddr) | |
2305 | { | |
2306 | isym.st_value -= count; | |
2307 | ||
2308 | if (isym.st_value + isym.st_size >= toaddr) | |
b34976b6 AM |
2309 | isym.st_size += count; |
2310 | ||
63a23799 | 2311 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2312 | } |
2313 | else if (isym.st_shndx == sec_shndx | |
2314 | && isym.st_value < addr + count) | |
2315 | { | |
2316 | if (isym.st_value+isym.st_size >= addr + count | |
2317 | && isym.st_value+isym.st_size < toaddr) | |
2318 | isym.st_size -= count; | |
2319 | ||
2320 | if (isym.st_value >= addr | |
2321 | && isym.st_value < addr + count) | |
2322 | isym.st_value = addr; | |
2323 | ||
63a23799 | 2324 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2325 | } |
2326 | } | |
2327 | ||
2328 | /* Now adjust the global symbols defined in this section. */ | |
2329 | esym = extsyms + symtab_hdr->sh_info; | |
2330 | esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); | |
2331 | ||
91d6fa6a | 2332 | for (sym_index = 0; esym < esymend; esym ++, sym_index ++) |
86aba9db NC |
2333 | { |
2334 | Elf_Internal_Sym isym; | |
2335 | ||
2336 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym); | |
91d6fa6a | 2337 | sym_hash = elf_sym_hashes (abfd) [sym_index]; |
86aba9db NC |
2338 | |
2339 | if (isym.st_shndx == sec_shndx | |
2340 | && ((sym_hash)->root.type == bfd_link_hash_defined | |
2341 | || (sym_hash)->root.type == bfd_link_hash_defweak) | |
2342 | && (sym_hash)->root.u.def.section == sec | |
2343 | && (sym_hash)->root.u.def.value >= addr + count | |
2344 | && (sym_hash)->root.u.def.value < toaddr) | |
2345 | { | |
2346 | if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr) | |
2347 | { | |
2348 | isym.st_size += count; | |
63a23799 | 2349 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2350 | } |
2351 | ||
2352 | (sym_hash)->root.u.def.value -= count; | |
2353 | } | |
2354 | else if (isym.st_shndx == sec_shndx | |
2355 | && ((sym_hash)->root.type == bfd_link_hash_defined | |
2356 | || (sym_hash)->root.type == bfd_link_hash_defweak) | |
2357 | && (sym_hash)->root.u.def.section == sec | |
2358 | && (sym_hash)->root.u.def.value < addr + count) | |
2359 | { | |
2360 | if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count | |
2361 | && (sym_hash)->root.u.def.value+isym.st_size < toaddr) | |
2362 | isym.st_size -= count; | |
2363 | ||
2364 | if ((sym_hash)->root.u.def.value >= addr | |
2365 | && (sym_hash)->root.u.def.value < addr + count) | |
2366 | (sym_hash)->root.u.def.value = addr; | |
2367 | ||
63a23799 | 2368 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2369 | } |
2370 | ||
2371 | if (shndx) | |
2372 | ++ shndx; | |
2373 | } | |
2374 | ||
b34976b6 | 2375 | return TRUE; |
86aba9db NC |
2376 | } |
2377 | ||
2378 | #define NOP_OPCODE (0x0000) | |
b34976b6 | 2379 | #define MOVHI 0x0640 /* 4byte */ |
86aba9db | 2380 | #define MOVHI_MASK 0x07e0 |
b34976b6 | 2381 | #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */ |
86aba9db NC |
2382 | #define MOVHI_R2(insn) ((insn) >> 11) |
2383 | #define MOVEA 0x0620 /* 2byte */ | |
2384 | #define MOVEA_MASK 0x07e0 | |
2385 | #define MOVEA_R1(insn) ((insn) & 0x1f) | |
2386 | #define MOVEA_R2(insn) ((insn) >> 11) | |
2387 | #define JARL_4 0x00040780 /* 4byte */ | |
2388 | #define JARL_4_MASK 0xFFFF07FF | |
2389 | #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11) | |
2390 | #define ADD_I 0x0240 /* 2byte */ | |
2391 | #define ADD_I_MASK 0x07e0 | |
2392 | #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */ | |
2393 | #define ADD_R2(insn) ((insn) >> 11) | |
2394 | #define JMP_R 0x0060 /* 2byte */ | |
2395 | #define JMP_R_MASK 0xFFE0 | |
2396 | #define JMP_R1(insn) ((insn) & 0x1f) | |
2397 | ||
b34976b6 | 2398 | static bfd_boolean |
47b0e7ad NC |
2399 | v850_elf_relax_section (bfd *abfd, |
2400 | asection *sec, | |
2401 | struct bfd_link_info *link_info, | |
2402 | bfd_boolean *again) | |
86aba9db | 2403 | { |
b34976b6 AM |
2404 | Elf_Internal_Shdr *symtab_hdr; |
2405 | Elf_Internal_Rela *internal_relocs; | |
2406 | Elf_Internal_Rela *irel; | |
2407 | Elf_Internal_Rela *irelend; | |
2408 | Elf_Internal_Rela *irelalign = NULL; | |
2409 | Elf_Internal_Sym *isymbuf = NULL; | |
2410 | bfd_byte *contents = NULL; | |
2411 | bfd_vma addr = 0; | |
2412 | bfd_vma toaddr; | |
2413 | int align_pad_size = 0; | |
2414 | bfd_boolean result = TRUE; | |
2415 | ||
2416 | *again = FALSE; | |
86aba9db | 2417 | |
1049f94e | 2418 | if (link_info->relocatable |
86aba9db NC |
2419 | || (sec->flags & SEC_RELOC) == 0 |
2420 | || sec->reloc_count == 0) | |
b34976b6 | 2421 | return TRUE; |
86aba9db | 2422 | |
86aba9db NC |
2423 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; |
2424 | ||
45d6a902 | 2425 | internal_relocs = (_bfd_elf_link_read_relocs |
47b0e7ad | 2426 | (abfd, sec, NULL, NULL, link_info->keep_memory)); |
86aba9db NC |
2427 | if (internal_relocs == NULL) |
2428 | goto error_return; | |
86aba9db NC |
2429 | |
2430 | irelend = internal_relocs + sec->reloc_count; | |
b34976b6 | 2431 | |
eea6121a | 2432 | while (addr < sec->size) |
86aba9db | 2433 | { |
eea6121a | 2434 | toaddr = sec->size; |
86aba9db NC |
2435 | |
2436 | for (irel = internal_relocs; irel < irelend; irel ++) | |
2437 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN | |
2438 | && irel->r_offset > addr | |
2439 | && irel->r_offset < toaddr) | |
2440 | toaddr = irel->r_offset; | |
b34976b6 | 2441 | |
86aba9db NC |
2442 | #ifdef DEBUG_RELAX |
2443 | fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n", | |
2444 | addr, toaddr, align_pad_size); | |
2445 | #endif | |
2446 | if (irelalign) | |
2447 | { | |
2448 | bfd_vma alignto; | |
2449 | bfd_vma alignmoveto; | |
2450 | ||
2451 | alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend); | |
2452 | alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend); | |
2453 | ||
2454 | if (alignmoveto < alignto) | |
2455 | { | |
2456 | unsigned int i; | |
2457 | ||
2458 | align_pad_size = alignto - alignmoveto; | |
2459 | #ifdef DEBUG_RELAX | |
2460 | fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n", | |
2461 | alignmoveto, toaddr, align_pad_size); | |
2462 | #endif | |
2463 | if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto, | |
2464 | toaddr, align_pad_size)) | |
b34976b6 | 2465 | goto error_return; |
86aba9db NC |
2466 | |
2467 | for (i = BFD_ALIGN (toaddr - align_pad_size, 1); | |
2468 | (i + 1) < toaddr; i += 2) | |
2469 | bfd_put_16 (abfd, NOP_OPCODE, contents + i); | |
2470 | ||
2471 | addr = alignmoveto; | |
2472 | } | |
2473 | else | |
2474 | align_pad_size = 0; | |
2475 | } | |
2476 | ||
2477 | for (irel = internal_relocs; irel < irelend; irel++) | |
2478 | { | |
b34976b6 AM |
2479 | bfd_vma laddr; |
2480 | bfd_vma addend; | |
2481 | bfd_vma symval; | |
2482 | int insn[5]; | |
2483 | int no_match = -1; | |
2484 | Elf_Internal_Rela *hi_irelfn; | |
2485 | Elf_Internal_Rela *lo_irelfn; | |
2486 | Elf_Internal_Rela *irelcall; | |
2487 | bfd_signed_vma foff; | |
86aba9db NC |
2488 | |
2489 | if (! (irel->r_offset >= addr && irel->r_offset < toaddr | |
2490 | && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL | |
2491 | || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP))) | |
2492 | continue; | |
2493 | ||
2494 | #ifdef DEBUG_RELAX | |
2495 | fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n", | |
2496 | irel->r_info, | |
2497 | irel->r_offset, | |
2498 | irel->r_addend ); | |
2499 | #endif | |
2500 | ||
2501 | /* Get the section contents. */ | |
2502 | if (contents == NULL) | |
2503 | { | |
2504 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2505 | contents = elf_section_data (sec)->this_hdr.contents; | |
2506 | else | |
2507 | { | |
47b0e7ad | 2508 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
86aba9db NC |
2509 | goto error_return; |
2510 | } | |
2511 | } | |
2512 | ||
5cec6941 NC |
2513 | /* Read this BFD's local symbols if we haven't done so already. */ |
2514 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
86aba9db | 2515 | { |
5cec6941 NC |
2516 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2517 | if (isymbuf == NULL) | |
2518 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2519 | symtab_hdr->sh_info, 0, | |
2520 | NULL, NULL, NULL); | |
2521 | if (isymbuf == NULL) | |
2522 | goto error_return; | |
86aba9db NC |
2523 | } |
2524 | ||
2525 | laddr = irel->r_offset; | |
2526 | ||
2527 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL) | |
2528 | { | |
2529 | /* Check code for -mlong-calls output. */ | |
eea6121a | 2530 | if (laddr + 16 <= (bfd_vma) sec->size) |
86aba9db NC |
2531 | { |
2532 | insn[0] = bfd_get_16 (abfd, contents + laddr); | |
2533 | insn[1] = bfd_get_16 (abfd, contents + laddr + 4); | |
2534 | insn[2] = bfd_get_32 (abfd, contents + laddr + 8); | |
2535 | insn[3] = bfd_get_16 (abfd, contents + laddr + 12); | |
2536 | insn[4] = bfd_get_16 (abfd, contents + laddr + 14); | |
b34976b6 | 2537 | |
86aba9db NC |
2538 | if ((insn[0] & MOVHI_MASK) != MOVHI |
2539 | || MOVHI_R1 (insn[0]) != 0) | |
2540 | no_match = 0; | |
2541 | ||
2542 | if (no_match < 0 | |
2543 | && ((insn[1] & MOVEA_MASK) != MOVEA | |
2544 | || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1]))) | |
2545 | no_match = 1; | |
2546 | ||
2547 | if (no_match < 0 | |
2548 | && (insn[2] & JARL_4_MASK) != JARL_4) | |
2549 | no_match = 2; | |
2550 | ||
2551 | if (no_match < 0 | |
2552 | && ((insn[3] & ADD_I_MASK) != ADD_I | |
2553 | || ADD_I5 (insn[3]) != 4 | |
2554 | || JARL_R2 (insn[2]) != ADD_R2 (insn[3]))) | |
2555 | no_match = 3; | |
2556 | ||
2557 | if (no_match < 0 | |
2558 | && ((insn[4] & JMP_R_MASK) != JMP_R | |
2559 | || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4]))) | |
2560 | no_match = 4; | |
2561 | } | |
2562 | else | |
2563 | { | |
2564 | ((*_bfd_error_handler) | |
2565 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns", | |
2566 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
2567 | ||
2568 | continue; | |
2569 | } | |
2570 | ||
2571 | if (no_match >= 0) | |
2572 | { | |
2573 | ((*_bfd_error_handler) | |
2574 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x", | |
2575 | bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match])); | |
2576 | ||
2577 | continue; | |
b34976b6 | 2578 | } |
86aba9db NC |
2579 | |
2580 | /* Get the reloc for the address from which the register is | |
2581 | being loaded. This reloc will tell us which function is | |
2582 | actually being called. */ | |
2583 | for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++) | |
2584 | if (hi_irelfn->r_offset == laddr + 2 | |
b34976b6 | 2585 | && ELF32_R_TYPE (hi_irelfn->r_info) |
86aba9db NC |
2586 | == (int) R_V850_HI16_S) |
2587 | break; | |
2588 | ||
2589 | for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++) | |
2590 | if (lo_irelfn->r_offset == laddr + 6 | |
2591 | && ELF32_R_TYPE (lo_irelfn->r_info) | |
2592 | == (int) R_V850_LO16) | |
2593 | break; | |
2594 | ||
2595 | for (irelcall = internal_relocs; irelcall < irelend; irelcall ++) | |
2596 | if (irelcall->r_offset == laddr + 8 | |
2597 | && ELF32_R_TYPE (irelcall->r_info) | |
2598 | == (int) R_V850_22_PCREL) | |
2599 | break; | |
2600 | ||
2601 | if ( hi_irelfn == irelend | |
2602 | || lo_irelfn == irelend | |
2603 | || irelcall == irelend) | |
2604 | { | |
2605 | ((*_bfd_error_handler) | |
2606 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc", | |
2607 | bfd_get_filename (abfd), (unsigned long) irel->r_offset )); | |
2608 | ||
2609 | continue; | |
2610 | } | |
b34976b6 | 2611 | |
86aba9db NC |
2612 | if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info) |
2613 | { | |
5cec6941 | 2614 | Elf_Internal_Sym * isym; |
86aba9db NC |
2615 | |
2616 | /* A local symbol. */ | |
5cec6941 | 2617 | isym = isymbuf + ELF32_R_SYM (irelcall->r_info); |
86aba9db | 2618 | |
5cec6941 | 2619 | symval = isym->st_value; |
86aba9db NC |
2620 | } |
2621 | else | |
2622 | { | |
2623 | unsigned long indx; | |
2624 | struct elf_link_hash_entry * h; | |
2625 | ||
2626 | /* An external symbol. */ | |
2627 | indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info; | |
2628 | h = elf_sym_hashes (abfd)[indx]; | |
2629 | BFD_ASSERT (h != NULL); | |
2630 | ||
2631 | if ( h->root.type != bfd_link_hash_defined | |
2632 | && h->root.type != bfd_link_hash_defweak) | |
2633 | /* This appears to be a reference to an undefined | |
2634 | symbol. Just ignore it--it will be caught by the | |
2635 | regular reloc processing. */ | |
2636 | continue; | |
2637 | ||
2638 | symval = h->root.u.def.value; | |
2639 | } | |
2640 | ||
2641 | if (symval + irelcall->r_addend != irelcall->r_offset + 4) | |
2642 | { | |
2643 | ((*_bfd_error_handler) | |
2644 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx", | |
2645 | bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset )); | |
2646 | ||
2647 | continue; | |
2648 | } | |
2649 | ||
2650 | /* Get the value of the symbol referred to by the reloc. */ | |
2651 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2652 | { | |
b34976b6 AM |
2653 | Elf_Internal_Sym *isym; |
2654 | asection *sym_sec; | |
86aba9db NC |
2655 | |
2656 | /* A local symbol. */ | |
5cec6941 | 2657 | isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info); |
b34976b6 | 2658 | |
5cec6941 | 2659 | if (isym->st_shndx == SHN_UNDEF) |
86aba9db | 2660 | sym_sec = bfd_und_section_ptr; |
5cec6941 | 2661 | else if (isym->st_shndx == SHN_ABS) |
86aba9db | 2662 | sym_sec = bfd_abs_section_ptr; |
5cec6941 | 2663 | else if (isym->st_shndx == SHN_COMMON) |
86aba9db NC |
2664 | sym_sec = bfd_com_section_ptr; |
2665 | else | |
5cec6941 NC |
2666 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2667 | symval = (isym->st_value | |
86aba9db NC |
2668 | + sym_sec->output_section->vma |
2669 | + sym_sec->output_offset); | |
2670 | } | |
2671 | else | |
2672 | { | |
2673 | unsigned long indx; | |
b34976b6 | 2674 | struct elf_link_hash_entry *h; |
86aba9db NC |
2675 | |
2676 | /* An external symbol. */ | |
5cec6941 | 2677 | indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info; |
86aba9db NC |
2678 | h = elf_sym_hashes (abfd)[indx]; |
2679 | BFD_ASSERT (h != NULL); | |
2680 | ||
2681 | if ( h->root.type != bfd_link_hash_defined | |
2682 | && h->root.type != bfd_link_hash_defweak) | |
2683 | /* This appears to be a reference to an undefined | |
2684 | symbol. Just ignore it--it will be caught by the | |
2685 | regular reloc processing. */ | |
2686 | continue; | |
2687 | ||
2688 | symval = (h->root.u.def.value | |
2689 | + h->root.u.def.section->output_section->vma | |
2690 | + h->root.u.def.section->output_offset); | |
2691 | } | |
2692 | ||
2693 | addend = irel->r_addend; | |
2694 | ||
2695 | foff = (symval + addend | |
2696 | - (irel->r_offset | |
2697 | + sec->output_section->vma | |
2698 | + sec->output_offset | |
2699 | + 4)); | |
2700 | #ifdef DEBUG_RELAX | |
2701 | fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n", | |
2702 | irel->r_offset, | |
2703 | (irel->r_offset | |
2704 | + sec->output_section->vma | |
2705 | + sec->output_offset), | |
2706 | symval, addend, foff); | |
2707 | #endif | |
2708 | ||
2709 | if (foff < -0x100000 || foff >= 0x100000) | |
2710 | /* After all that work, we can't shorten this function call. */ | |
2711 | continue; | |
2712 | ||
2713 | /* For simplicity of coding, we are going to modify the section | |
2714 | contents, the section relocs, and the BFD symbol table. We | |
2715 | must tell the rest of the code not to free up this | |
2716 | information. It would be possible to instead create a table | |
2717 | of changes which have to be made, as is done in coff-mips.c; | |
2718 | that would be more work, but would require less memory when | |
2719 | the linker is run. */ | |
2720 | elf_section_data (sec)->relocs = internal_relocs; | |
86aba9db | 2721 | elf_section_data (sec)->this_hdr.contents = contents; |
5cec6941 | 2722 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
b34976b6 | 2723 | |
86aba9db NC |
2724 | /* Replace the long call with a jarl. */ |
2725 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL); | |
2726 | ||
2727 | addend = 0; | |
2728 | ||
2729 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2730 | /* If this needs to be changed because of future relaxing, | |
2731 | it will be handled here like other internal IND12W | |
2732 | relocs. */ | |
2733 | bfd_put_32 (abfd, | |
2734 | 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf), | |
2735 | contents + irel->r_offset); | |
2736 | else | |
2737 | /* We can't fully resolve this yet, because the external | |
2738 | symbol value may be changed by future relaxing. | |
2739 | We let the final link phase handle it. */ | |
2740 | bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11), | |
2741 | contents + irel->r_offset); | |
2742 | ||
b34976b6 | 2743 | hi_irelfn->r_info = |
86aba9db NC |
2744 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); |
2745 | lo_irelfn->r_info = | |
2746 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); | |
2747 | irelcall->r_info = | |
2748 | ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE); | |
2749 | ||
2750 | if (! v850_elf_relax_delete_bytes (abfd, sec, | |
2751 | irel->r_offset + 4, toaddr, 12)) | |
2752 | goto error_return; | |
2753 | ||
2754 | align_pad_size += 12; | |
2755 | } | |
2756 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP) | |
2757 | { | |
2758 | /* Check code for -mlong-jumps output. */ | |
eea6121a | 2759 | if (laddr + 10 <= (bfd_vma) sec->size) |
86aba9db NC |
2760 | { |
2761 | insn[0] = bfd_get_16 (abfd, contents + laddr); | |
2762 | insn[1] = bfd_get_16 (abfd, contents + laddr + 4); | |
2763 | insn[2] = bfd_get_16 (abfd, contents + laddr + 8); | |
2764 | ||
2765 | if ((insn[0] & MOVHI_MASK) != MOVHI | |
2766 | || MOVHI_R1 (insn[0]) != 0) | |
2767 | no_match = 0; | |
2768 | ||
2769 | if (no_match < 0 | |
2770 | && ((insn[1] & MOVEA_MASK) != MOVEA | |
2771 | || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1]))) | |
2772 | no_match = 1; | |
2773 | ||
2774 | if (no_match < 0 | |
2775 | && ((insn[2] & JMP_R_MASK) != JMP_R | |
2776 | || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2]))) | |
2777 | no_match = 4; | |
2778 | } | |
2779 | else | |
2780 | { | |
2781 | ((*_bfd_error_handler) | |
2782 | ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns", | |
2783 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
2784 | ||
2785 | continue; | |
2786 | } | |
2787 | ||
2788 | if (no_match >= 0) | |
2789 | { | |
2790 | ((*_bfd_error_handler) | |
2791 | ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x", | |
2792 | bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match])); | |
2793 | ||
2794 | continue; | |
2795 | } | |
2796 | ||
2797 | /* Get the reloc for the address from which the register is | |
2798 | being loaded. This reloc will tell us which function is | |
2799 | actually being called. */ | |
2800 | for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++) | |
2801 | if (hi_irelfn->r_offset == laddr + 2 | |
b34976b6 | 2802 | && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S) |
86aba9db NC |
2803 | break; |
2804 | ||
2805 | for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++) | |
2806 | if (lo_irelfn->r_offset == laddr + 6 | |
2807 | && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16) | |
2808 | break; | |
2809 | ||
2810 | if ( hi_irelfn == irelend | |
2811 | || lo_irelfn == irelend) | |
2812 | { | |
2813 | ((*_bfd_error_handler) | |
2814 | ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc", | |
2815 | bfd_get_filename (abfd), (unsigned long) irel->r_offset )); | |
2816 | ||
2817 | continue; | |
2818 | } | |
b34976b6 | 2819 | |
86aba9db NC |
2820 | /* Get the value of the symbol referred to by the reloc. */ |
2821 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2822 | { | |
5cec6941 NC |
2823 | Elf_Internal_Sym * isym; |
2824 | asection * sym_sec; | |
86aba9db NC |
2825 | |
2826 | /* A local symbol. */ | |
5cec6941 NC |
2827 | isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info); |
2828 | ||
2829 | if (isym->st_shndx == SHN_UNDEF) | |
86aba9db | 2830 | sym_sec = bfd_und_section_ptr; |
5cec6941 | 2831 | else if (isym->st_shndx == SHN_ABS) |
86aba9db | 2832 | sym_sec = bfd_abs_section_ptr; |
5cec6941 | 2833 | else if (isym->st_shndx == SHN_COMMON) |
86aba9db NC |
2834 | sym_sec = bfd_com_section_ptr; |
2835 | else | |
5cec6941 NC |
2836 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2837 | symval = (isym->st_value | |
86aba9db NC |
2838 | + sym_sec->output_section->vma |
2839 | + sym_sec->output_offset); | |
2840 | #ifdef DEBUG_RELAX | |
2841 | { | |
2842 | char * name = bfd_elf_string_from_elf_section | |
5cec6941 | 2843 | (abfd, symtab_hdr->sh_link, isym->st_name); |
86aba9db NC |
2844 | |
2845 | fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", | |
5cec6941 NC |
2846 | sym_sec->name, name, isym->st_name, |
2847 | sym_sec->output_section->vma, | |
2848 | sym_sec->output_offset, | |
2849 | isym->st_value, irel->r_addend); | |
86aba9db NC |
2850 | } |
2851 | #endif | |
2852 | } | |
2853 | else | |
2854 | { | |
2855 | unsigned long indx; | |
2856 | struct elf_link_hash_entry * h; | |
2857 | ||
2858 | /* An external symbol. */ | |
2859 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2860 | h = elf_sym_hashes (abfd)[indx]; | |
2861 | BFD_ASSERT (h != NULL); | |
2862 | ||
2863 | if ( h->root.type != bfd_link_hash_defined | |
2864 | && h->root.type != bfd_link_hash_defweak) | |
2865 | /* This appears to be a reference to an undefined | |
2866 | symbol. Just ignore it--it will be caught by the | |
2867 | regular reloc processing. */ | |
2868 | continue; | |
2869 | ||
2870 | symval = (h->root.u.def.value | |
2871 | + h->root.u.def.section->output_section->vma | |
2872 | + h->root.u.def.section->output_offset); | |
2873 | #ifdef DEBUG_RELAX | |
2874 | fprintf (stderr, | |
2875 | "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n", | |
2876 | sec->name, h->root.root.string, h->root.u.def.value, | |
2877 | sec->output_section->vma, sec->output_offset, irel->r_addend); | |
2878 | #endif | |
2879 | } | |
2880 | ||
2881 | addend = irel->r_addend; | |
2882 | ||
2883 | foff = (symval + addend | |
2884 | - (irel->r_offset | |
2885 | + sec->output_section->vma | |
2886 | + sec->output_offset | |
2887 | + 4)); | |
2888 | #ifdef DEBUG_RELAX | |
2889 | fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n", | |
2890 | irel->r_offset, | |
2891 | (irel->r_offset | |
2892 | + sec->output_section->vma | |
2893 | + sec->output_offset), | |
2894 | symval, addend, foff); | |
2895 | #endif | |
2896 | if (foff < -0x100000 || foff >= 0x100000) | |
2897 | /* After all that work, we can't shorten this function call. */ | |
2898 | continue; | |
2899 | ||
2900 | /* For simplicity of coding, we are going to modify the section | |
2901 | contents, the section relocs, and the BFD symbol table. We | |
2902 | must tell the rest of the code not to free up this | |
2903 | information. It would be possible to instead create a table | |
2904 | of changes which have to be made, as is done in coff-mips.c; | |
2905 | that would be more work, but would require less memory when | |
2906 | the linker is run. */ | |
2907 | elf_section_data (sec)->relocs = internal_relocs; | |
86aba9db | 2908 | elf_section_data (sec)->this_hdr.contents = contents; |
5cec6941 | 2909 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
86aba9db NC |
2910 | |
2911 | if (foff < -0x100 || foff >= 0x100) | |
2912 | { | |
2913 | /* Replace the long jump with a jr. */ | |
2914 | ||
2915 | irel->r_info = | |
b34976b6 AM |
2916 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL); |
2917 | ||
86aba9db NC |
2918 | irel->r_addend = addend; |
2919 | addend = 0; | |
2920 | ||
2921 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2922 | /* If this needs to be changed because of future relaxing, | |
2923 | it will be handled here like other internal IND12W | |
2924 | relocs. */ | |
2925 | bfd_put_32 (abfd, | |
2926 | 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf), | |
2927 | contents + irel->r_offset); | |
2928 | else | |
2929 | /* We can't fully resolve this yet, because the external | |
2930 | symbol value may be changed by future relaxing. | |
2931 | We let the final link phase handle it. */ | |
2932 | bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset); | |
2933 | ||
2934 | hi_irelfn->r_info = | |
2935 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); | |
2936 | lo_irelfn->r_info = | |
2937 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); | |
2938 | if (!v850_elf_relax_delete_bytes (abfd, sec, | |
2939 | irel->r_offset + 4, toaddr, 6)) | |
2940 | goto error_return; | |
2941 | ||
2942 | align_pad_size += 6; | |
2943 | } | |
2944 | else | |
2945 | { | |
2946 | /* Replace the long jump with a br. */ | |
2947 | ||
2948 | irel->r_info = | |
2949 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL); | |
2950 | ||
2951 | irel->r_addend = addend; | |
2952 | addend = 0; | |
2953 | ||
2954 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2955 | /* If this needs to be changed because of future relaxing, | |
2956 | it will be handled here like other internal IND12W | |
2957 | relocs. */ | |
2958 | bfd_put_16 (abfd, | |
2959 | 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070), | |
2960 | contents + irel->r_offset); | |
2961 | else | |
2962 | /* We can't fully resolve this yet, because the external | |
2963 | symbol value may be changed by future relaxing. | |
2964 | We let the final link phase handle it. */ | |
2965 | bfd_put_16 (abfd, 0x0585, contents + irel->r_offset); | |
2966 | ||
2967 | hi_irelfn->r_info = | |
2968 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); | |
2969 | lo_irelfn->r_info = | |
2970 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); | |
2971 | if (!v850_elf_relax_delete_bytes (abfd, sec, | |
2972 | irel->r_offset + 2, toaddr, 8)) | |
2973 | goto error_return; | |
2974 | ||
2975 | align_pad_size += 8; | |
2976 | } | |
2977 | } | |
2978 | } | |
2979 | ||
2980 | irelalign = NULL; | |
2981 | for (irel = internal_relocs; irel < irelend; irel++) | |
2982 | { | |
2983 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN | |
2984 | && irel->r_offset == toaddr) | |
2985 | { | |
2986 | irel->r_offset -= align_pad_size; | |
2987 | ||
2988 | if (irelalign == NULL || irelalign->r_addend > irel->r_addend) | |
2989 | irelalign = irel; | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | addr = toaddr; | |
2994 | } | |
2995 | ||
2996 | if (!irelalign) | |
2997 | { | |
2998 | #ifdef DEBUG_RELAX | |
2999 | fprintf (stderr, "relax pad %d shorten %d -> %d\n", | |
3000 | align_pad_size, | |
eea6121a AM |
3001 | sec->size, |
3002 | sec->size - align_pad_size); | |
86aba9db | 3003 | #endif |
eea6121a | 3004 | sec->size -= align_pad_size; |
86aba9db NC |
3005 | } |
3006 | ||
5cec6941 NC |
3007 | finish: |
3008 | if (internal_relocs != NULL | |
3009 | && elf_section_data (sec)->relocs != internal_relocs) | |
3010 | free (internal_relocs); | |
86aba9db | 3011 | |
5cec6941 NC |
3012 | if (contents != NULL |
3013 | && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents) | |
3014 | free (contents); | |
86aba9db | 3015 | |
5cec6941 NC |
3016 | if (isymbuf != NULL |
3017 | && symtab_hdr->contents != (bfd_byte *) isymbuf) | |
3018 | free (isymbuf); | |
86aba9db | 3019 | |
5cec6941 | 3020 | return result; |
86aba9db | 3021 | |
5cec6941 | 3022 | error_return: |
b34976b6 | 3023 | result = FALSE; |
5cec6941 | 3024 | goto finish; |
86aba9db | 3025 | } |
2f89ff8d | 3026 | |
b35d266b | 3027 | static const struct bfd_elf_special_section v850_elf_special_sections[] = |
7f4d3958 | 3028 | { |
0112cd26 NC |
3029 | { STRING_COMMA_LEN (".call_table_data"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE) }, |
3030 | { STRING_COMMA_LEN (".call_table_text"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3031 | + SHF_EXECINSTR) }, | |
3032 | { STRING_COMMA_LEN (".rosdata"), -2, SHT_PROGBITS, (SHF_ALLOC | |
3033 | + SHF_V850_GPREL) }, | |
3034 | { STRING_COMMA_LEN (".rozdata"), -2, SHT_PROGBITS, (SHF_ALLOC | |
3035 | + SHF_V850_R0REL) }, | |
3036 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE | |
3037 | + SHF_V850_GPREL) }, | |
3038 | { STRING_COMMA_LEN (".scommon"), -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE | |
3039 | + SHF_V850_GPREL) }, | |
3040 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3041 | + SHF_V850_GPREL) }, | |
3042 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE | |
3043 | + SHF_V850_EPREL) }, | |
3044 | { STRING_COMMA_LEN (".tcommon"), -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE | |
3045 | + SHF_V850_R0REL) }, | |
3046 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3047 | + SHF_V850_EPREL) }, | |
3048 | { STRING_COMMA_LEN (".zbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE | |
3049 | + SHF_V850_R0REL) }, | |
3050 | { STRING_COMMA_LEN (".zcommon"), -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE | |
3051 | + SHF_V850_R0REL) }, | |
3052 | { STRING_COMMA_LEN (".zdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3053 | + SHF_V850_R0REL) }, | |
3054 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 | 3055 | }; |
252b5132 RH |
3056 | \f |
3057 | #define TARGET_LITTLE_SYM bfd_elf32_v850_vec | |
3058 | #define TARGET_LITTLE_NAME "elf32-v850" | |
3059 | #define ELF_ARCH bfd_arch_v850 | |
aa4f99bb AO |
3060 | #define ELF_MACHINE_CODE EM_V850 |
3061 | #define ELF_MACHINE_ALT1 EM_CYGNUS_V850 | |
46767561 | 3062 | #define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */ |
252b5132 | 3063 | #define ELF_MAXPAGESIZE 0x1000 |
435b1e90 | 3064 | |
252b5132 RH |
3065 | #define elf_info_to_howto v850_elf_info_to_howto_rela |
3066 | #define elf_info_to_howto_rel v850_elf_info_to_howto_rel | |
3067 | ||
3068 | #define elf_backend_check_relocs v850_elf_check_relocs | |
3069 | #define elf_backend_relocate_section v850_elf_relocate_section | |
3070 | #define elf_backend_object_p v850_elf_object_p | |
3071 | #define elf_backend_final_write_processing v850_elf_final_write_processing | |
3072 | #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section | |
3073 | #define elf_backend_symbol_processing v850_elf_symbol_processing | |
3074 | #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook | |
3075 | #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook | |
3076 | #define elf_backend_section_from_shdr v850_elf_section_from_shdr | |
3077 | #define elf_backend_fake_sections v850_elf_fake_sections | |
3078 | #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook | |
29ef7005 | 3079 | #define elf_backend_special_sections v850_elf_special_sections |
252b5132 RH |
3080 | |
3081 | #define elf_backend_can_gc_sections 1 | |
f0fe0e16 | 3082 | #define elf_backend_rela_normal 1 |
252b5132 | 3083 | |
252b5132 RH |
3084 | #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name |
3085 | #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup | |
157090f7 | 3086 | #define bfd_elf32_bfd_reloc_name_lookup v850_elf_reloc_name_lookup |
252b5132 RH |
3087 | #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data |
3088 | #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags | |
3089 | #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data | |
86aba9db | 3090 | #define bfd_elf32_bfd_relax_section v850_elf_relax_section |
252b5132 RH |
3091 | |
3092 | #define elf_symbol_leading_char '_' | |
3093 | ||
3094 | #include "elf32-target.h" |