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, |
ab96bf03 | 3 | 2006, 2007 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 | bfd *dynobj; |
51 | Elf_Internal_Shdr *symtab_hdr; | |
52 | struct elf_link_hash_entry **sym_hashes; | |
53 | const Elf_Internal_Rela *rel; | |
54 | const Elf_Internal_Rela *rel_end; | |
55 | asection *sreloc; | |
56 | enum v850_reloc_type r_type; | |
57 | int other = 0; | |
47b0e7ad | 58 | const char *common = NULL; |
252b5132 | 59 | |
1049f94e | 60 | if (info->relocatable) |
b34976b6 | 61 | return TRUE; |
252b5132 RH |
62 | |
63 | #ifdef DEBUG | |
d003868e AM |
64 | _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B", |
65 | sec, abfd); | |
252b5132 RH |
66 | #endif |
67 | ||
68 | dynobj = elf_hash_table (info)->dynobj; | |
69 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
70 | sym_hashes = elf_sym_hashes (abfd); | |
71 | sreloc = NULL; | |
72 | ||
73 | rel_end = relocs + sec->reloc_count; | |
74 | for (rel = relocs; rel < rel_end; rel++) | |
75 | { | |
76 | unsigned long r_symndx; | |
77 | struct elf_link_hash_entry *h; | |
78 | ||
79 | r_symndx = ELF32_R_SYM (rel->r_info); | |
80 | if (r_symndx < symtab_hdr->sh_info) | |
81 | h = NULL; | |
82 | else | |
973a3492 L |
83 | { |
84 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
85 | while (h->root.type == bfd_link_hash_indirect | |
86 | || h->root.type == bfd_link_hash_warning) | |
87 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
88 | } | |
252b5132 RH |
89 | |
90 | r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info); | |
91 | switch (r_type) | |
92 | { | |
93 | default: | |
94 | case R_V850_NONE: | |
95 | case R_V850_9_PCREL: | |
96 | case R_V850_22_PCREL: | |
97 | case R_V850_HI16_S: | |
98 | case R_V850_HI16: | |
99 | case R_V850_LO16: | |
1e50d24d | 100 | case R_V850_LO16_SPLIT_OFFSET: |
e30ddb24 NC |
101 | case R_V850_ABS32: |
102 | case R_V850_REL32: | |
252b5132 RH |
103 | case R_V850_16: |
104 | case R_V850_8: | |
105 | case R_V850_CALLT_6_7_OFFSET: | |
106 | case R_V850_CALLT_16_16_OFFSET: | |
107 | break; | |
108 | ||
109 | /* This relocation describes the C++ object vtable hierarchy. | |
110 | Reconstruct it for later use during GC. */ | |
111 | case R_V850_GNU_VTINHERIT: | |
c152c796 | 112 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 113 | return FALSE; |
252b5132 RH |
114 | break; |
115 | ||
e12dd2ea NC |
116 | /* This relocation describes which C++ vtable entries |
117 | are actually used. Record for later use during GC. */ | |
252b5132 | 118 | case R_V850_GNU_VTENTRY: |
d17e0c6e JB |
119 | BFD_ASSERT (h != NULL); |
120 | if (h != NULL | |
121 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 122 | return FALSE; |
252b5132 RH |
123 | break; |
124 | ||
125 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
126 | case R_V850_SDA_16_16_OFFSET: | |
127 | case R_V850_SDA_15_16_OFFSET: | |
128 | other = V850_OTHER_SDA; | |
129 | common = ".scommon"; | |
130 | goto small_data_common; | |
435b1e90 | 131 | |
252b5132 RH |
132 | case R_V850_ZDA_16_16_SPLIT_OFFSET: |
133 | case R_V850_ZDA_16_16_OFFSET: | |
134 | case R_V850_ZDA_15_16_OFFSET: | |
135 | other = V850_OTHER_ZDA; | |
136 | common = ".zcommon"; | |
137 | goto small_data_common; | |
435b1e90 | 138 | |
252b5132 RH |
139 | case R_V850_TDA_4_5_OFFSET: |
140 | case R_V850_TDA_4_4_OFFSET: | |
141 | case R_V850_TDA_6_8_OFFSET: | |
142 | case R_V850_TDA_7_8_OFFSET: | |
143 | case R_V850_TDA_7_7_OFFSET: | |
144 | case R_V850_TDA_16_16_OFFSET: | |
145 | other = V850_OTHER_TDA; | |
146 | common = ".tcommon"; | |
147 | /* fall through */ | |
148 | ||
149 | #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA) | |
150 | ||
151 | small_data_common: | |
152 | if (h) | |
153 | { | |
e12dd2ea NC |
154 | /* Flag which type of relocation was used. */ |
155 | h->other |= other; | |
252b5132 RH |
156 | if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK) |
157 | && (h->other & V850_OTHER_ERROR) == 0) | |
158 | { | |
159 | const char * msg; | |
160 | static char buff[200]; /* XXX */ | |
161 | ||
162 | switch (h->other & V850_OTHER_MASK) | |
163 | { | |
164 | default: | |
165 | msg = _("Variable `%s' cannot occupy in multiple small data regions"); | |
166 | break; | |
167 | case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA: | |
168 | msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions"); | |
169 | break; | |
170 | case V850_OTHER_SDA | V850_OTHER_ZDA: | |
171 | msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously"); | |
172 | break; | |
173 | case V850_OTHER_SDA | V850_OTHER_TDA: | |
174 | msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously"); | |
175 | break; | |
176 | case V850_OTHER_ZDA | V850_OTHER_TDA: | |
177 | msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously"); | |
178 | break; | |
179 | } | |
180 | ||
181 | sprintf (buff, msg, h->root.root.string); | |
182 | info->callbacks->warning (info, buff, h->root.root.string, | |
dc810e39 AM |
183 | abfd, h->root.u.def.section, |
184 | (bfd_vma) 0); | |
252b5132 RH |
185 | |
186 | bfd_set_error (bfd_error_bad_value); | |
187 | h->other |= V850_OTHER_ERROR; | |
b34976b6 | 188 | ret = FALSE; |
252b5132 RH |
189 | } |
190 | } | |
191 | ||
192 | if (h && h->root.type == bfd_link_hash_common | |
193 | && h->root.u.c.p | |
194 | && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON")) | |
195 | { | |
e12dd2ea NC |
196 | asection * section; |
197 | ||
198 | section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common); | |
252b5132 RH |
199 | section->flags |= SEC_IS_COMMON; |
200 | } | |
201 | ||
202 | #ifdef DEBUG | |
203 | fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n", | |
204 | v850_elf_howto_table[ (int)r_type ].name, | |
205 | (h && h->root.root.string) ? h->root.root.string : "<unknown>", | |
206 | (h->root.type == bfd_link_hash_common) ? ", symbol is common" : ""); | |
207 | #endif | |
208 | break; | |
209 | } | |
210 | } | |
211 | ||
212 | return ret; | |
213 | } | |
214 | ||
e12dd2ea NC |
215 | /* In the old version, when an entry was checked out from the table, |
216 | it was deleted. This produced an error if the entry was needed | |
217 | more than once, as the second attempted retry failed. | |
218 | ||
219 | In the current version, the entry is not deleted, instead we set | |
b34976b6 | 220 | the field 'found' to TRUE. If a second lookup matches the same |
e12dd2ea NC |
221 | entry, then we know that the hi16s reloc has already been updated |
222 | and does not need to be updated a second time. | |
223 | ||
224 | TODO - TOFIX: If it is possible that we need to restore 2 different | |
225 | addresses from the same table entry, where the first generates an | |
226 | overflow, whilst the second do not, then this code will fail. */ | |
252b5132 RH |
227 | |
228 | typedef struct hi16s_location | |
229 | { | |
47b0e7ad NC |
230 | bfd_vma addend; |
231 | bfd_byte * address; | |
232 | unsigned long counter; | |
233 | bfd_boolean found; | |
234 | struct hi16s_location * next; | |
252b5132 RH |
235 | } |
236 | hi16s_location; | |
237 | ||
47b0e7ad NC |
238 | static hi16s_location * previous_hi16s; |
239 | static hi16s_location * free_hi16s; | |
240 | static unsigned long hi16s_counter; | |
252b5132 RH |
241 | |
242 | static void | |
47b0e7ad | 243 | remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address) |
252b5132 RH |
244 | { |
245 | hi16s_location * entry = NULL; | |
dc810e39 | 246 | bfd_size_type amt = sizeof (* free_hi16s); |
435b1e90 | 247 | |
252b5132 RH |
248 | /* Find a free structure. */ |
249 | if (free_hi16s == NULL) | |
47b0e7ad | 250 | free_hi16s = bfd_zalloc (abfd, amt); |
252b5132 RH |
251 | |
252 | entry = free_hi16s; | |
253 | free_hi16s = free_hi16s->next; | |
435b1e90 | 254 | |
252b5132 RH |
255 | entry->addend = addend; |
256 | entry->address = address; | |
257 | entry->counter = hi16s_counter ++; | |
b34976b6 | 258 | entry->found = FALSE; |
252b5132 RH |
259 | entry->next = previous_hi16s; |
260 | previous_hi16s = entry; | |
435b1e90 | 261 | |
252b5132 RH |
262 | /* Cope with wrap around of our counter. */ |
263 | if (hi16s_counter == 0) | |
264 | { | |
47b0e7ad | 265 | /* XXX: Assume that all counter entries differ only in their low 16 bits. */ |
252b5132 RH |
266 | for (entry = previous_hi16s; entry != NULL; entry = entry->next) |
267 | entry->counter &= 0xffff; | |
268 | ||
269 | hi16s_counter = 0x10000; | |
270 | } | |
252b5132 RH |
271 | } |
272 | ||
273 | static bfd_byte * | |
47b0e7ad | 274 | find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found) |
252b5132 | 275 | { |
b34976b6 AM |
276 | hi16s_location *match = NULL; |
277 | hi16s_location *entry; | |
278 | hi16s_location *previous = NULL; | |
279 | hi16s_location *prev; | |
280 | bfd_byte *addr; | |
435b1e90 | 281 | |
252b5132 RH |
282 | /* Search the table. Record the most recent entry that matches. */ |
283 | for (entry = previous_hi16s; entry; entry = entry->next) | |
284 | { | |
285 | if (entry->addend == addend | |
286 | && (match == NULL || match->counter < entry->counter)) | |
287 | { | |
288 | previous = prev; | |
289 | match = entry; | |
290 | } | |
435b1e90 | 291 | |
252b5132 RH |
292 | prev = entry; |
293 | } | |
294 | ||
295 | if (match == NULL) | |
296 | return NULL; | |
297 | ||
298 | /* Extract the address. */ | |
299 | addr = match->address; | |
300 | ||
4cc11e76 | 301 | /* Remember if this entry has already been used before. */ |
252b5132 RH |
302 | if (already_found) |
303 | * already_found = match->found; | |
304 | ||
305 | /* Note that this entry has now been used. */ | |
b34976b6 | 306 | match->found = TRUE; |
435b1e90 | 307 | |
252b5132 | 308 | return addr; |
435b1e90 | 309 | } |
252b5132 | 310 | |
1e50d24d RS |
311 | /* Calculate the final operand value for a R_V850_LO16 or |
312 | R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and | |
313 | ADDEND is the sum of the relocation symbol and offset. Store the | |
314 | operand value in *INSN and return true on success. | |
315 | ||
316 | The assembler has already done some of this: If the value stored in | |
317 | the instruction has its 15th bit set, (counting from zero) then the | |
318 | assembler will have added 1 to the value stored in the associated | |
319 | HI16S reloc. So for example, these relocations: | |
320 | ||
321 | movhi hi( fred ), r0, r1 | |
322 | movea lo( fred ), r1, r1 | |
323 | ||
324 | will store 0 in the value fields for the MOVHI and MOVEA instructions | |
325 | and addend will be the address of fred, but for these instructions: | |
326 | ||
327 | movhi hi( fred + 0x123456), r0, r1 | |
328 | movea lo( fred + 0x123456), r1, r1 | |
329 | ||
330 | the value stored in the MOVHI instruction will be 0x12 and the value | |
331 | stored in the MOVEA instruction will be 0x3456. If however the | |
332 | instructions were: | |
333 | ||
334 | movhi hi( fred + 0x10ffff), r0, r1 | |
335 | movea lo( fred + 0x10ffff), r1, r1 | |
336 | ||
337 | then the value stored in the MOVHI instruction would be 0x11 (not | |
338 | 0x10) and the value stored in the MOVEA instruction would be 0xffff. | |
339 | Thus (assuming for the moment that the addend is 0), at run time the | |
340 | MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction | |
341 | adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if | |
342 | the instructions were: | |
343 | ||
344 | movhi hi( fred - 1), r0, r1 | |
345 | movea lo( fred - 1), r1, r1 | |
346 | ||
347 | then 0 is stored in the MOVHI instruction and -1 is stored in the | |
348 | MOVEA instruction. | |
349 | ||
350 | Overflow can occur if the addition of the value stored in the | |
351 | instruction plus the addend sets the 15th bit when before it was clear. | |
352 | This is because the 15th bit will be sign extended into the high part, | |
353 | thus reducing its value by one, but since the 15th bit was originally | |
354 | clear, the assembler will not have added 1 to the previous HI16S reloc | |
355 | to compensate for this effect. For example: | |
356 | ||
357 | movhi hi( fred + 0x123456), r0, r1 | |
358 | movea lo( fred + 0x123456), r1, r1 | |
359 | ||
360 | The value stored in HI16S reloc is 0x12, the value stored in the LO16 | |
361 | reloc is 0x3456. If we assume that the address of fred is 0x00007000 | |
362 | then the relocations become: | |
363 | ||
364 | HI16S: 0x0012 + (0x00007000 >> 16) = 0x12 | |
365 | LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456 | |
366 | ||
367 | but when the instructions are executed, the MOVEA instruction's value | |
368 | is signed extended, so the sum becomes: | |
369 | ||
370 | 0x00120000 | |
371 | + 0xffffa456 | |
372 | ------------ | |
373 | 0x0011a456 but 'fred + 0x123456' = 0x0012a456 | |
374 | ||
375 | Note that if the 15th bit was set in the value stored in the LO16 | |
376 | reloc, then we do not have to do anything: | |
377 | ||
378 | movhi hi( fred + 0x10ffff), r0, r1 | |
379 | movea lo( fred + 0x10ffff), r1, r1 | |
380 | ||
381 | HI16S: 0x0011 + (0x00007000 >> 16) = 0x11 | |
382 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff | |
383 | ||
384 | 0x00110000 | |
385 | + 0x00006fff | |
386 | ------------ | |
387 | 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff | |
388 | ||
389 | Overflow can also occur if the computation carries into the 16th bit | |
390 | and it also results in the 15th bit having the same value as the 15th | |
391 | bit of the original value. What happens is that the HI16S reloc | |
392 | will have already examined the 15th bit of the original value and | |
393 | added 1 to the high part if the bit is set. This compensates for the | |
394 | sign extension of 15th bit of the result of the computation. But now | |
395 | there is a carry into the 16th bit, and this has not been allowed for. | |
396 | ||
397 | So, for example if fred is at address 0xf000: | |
398 | ||
399 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] | |
400 | movea lo( fred + 0xffff), r1, r1 | |
401 | ||
402 | HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001 | |
403 | LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost) | |
404 | ||
405 | 0x00010000 | |
406 | + 0xffffefff | |
407 | ------------ | |
408 | 0x0000efff but 'fred + 0xffff' = 0x0001efff | |
409 | ||
410 | Similarly, if the 15th bit remains clear, but overflow occurs into | |
411 | the 16th bit then (assuming the address of fred is 0xf000): | |
412 | ||
413 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] | |
414 | movea lo( fred + 0x7000), r1, r1 | |
415 | ||
416 | HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000 | |
417 | LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost) | |
418 | ||
419 | 0x00000000 | |
420 | + 0x00006fff | |
421 | ------------ | |
422 | 0x00006fff but 'fred + 0x7000' = 0x00016fff | |
423 | ||
424 | Note - there is no need to change anything if a carry occurs, and the | |
425 | 15th bit changes its value from being set to being clear, as the HI16S | |
426 | reloc will have already added in 1 to the high part for us: | |
427 | ||
428 | movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] | |
429 | movea lo( fred + 0xffff), r1, r1 | |
430 | ||
431 | HI16S: 0x0001 + (0x00007000 >> 16) | |
432 | LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost) | |
433 | ||
434 | 0x00010000 | |
435 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
436 | ------------ | |
437 | 0x00016fff which is right (assuming that fred is at 0x7000) | |
438 | ||
439 | but if the 15th bit goes from being clear to being set, then we must | |
440 | once again handle overflow: | |
441 | ||
442 | movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] | |
443 | movea lo( fred + 0x7000), r1, r1 | |
444 | ||
445 | HI16S: 0x0000 + (0x0000ffff >> 16) | |
446 | LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16) | |
447 | ||
448 | 0x00000000 | |
449 | + 0x00006fff (bit 15 not set, so the top half is zero) | |
450 | ------------ | |
451 | 0x00006fff which is wrong (assuming that fred is at 0xffff). */ | |
452 | ||
453 | static bfd_boolean | |
454 | v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn, | |
455 | unsigned long addend) | |
456 | { | |
457 | #define BIT15_SET(x) ((x) & 0x8000) | |
458 | #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff) | |
47b0e7ad | 459 | |
1e50d24d RS |
460 | if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend)) |
461 | || (OVERFLOWS (addend, *insn) | |
462 | && ((! BIT15_SET (*insn)) || (BIT15_SET (addend))))) | |
463 | { | |
464 | bfd_boolean already_updated; | |
465 | bfd_byte *hi16s_address = find_remembered_hi16s_reloc | |
466 | (addend, & already_updated); | |
467 | ||
468 | /* Amend the matching HI16_S relocation. */ | |
469 | if (hi16s_address != NULL) | |
470 | { | |
471 | if (! already_updated) | |
472 | { | |
473 | unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address); | |
474 | hi_insn += 1; | |
475 | bfd_put_16 (abfd, hi_insn, hi16s_address); | |
476 | } | |
477 | } | |
478 | else | |
479 | { | |
480 | fprintf (stderr, _("FAILED to find previous HI16 reloc\n")); | |
481 | return FALSE; | |
482 | } | |
483 | } | |
484 | #undef OVERFLOWS | |
485 | #undef BIT15_SET | |
486 | ||
487 | /* Do not complain if value has top bit set, as this has been | |
488 | anticipated. */ | |
489 | *insn = (*insn + addend) & 0xffff; | |
490 | return TRUE; | |
491 | } | |
492 | ||
252b5132 | 493 | /* FIXME: The code here probably ought to be removed and the code in reloc.c |
4cc11e76 | 494 | allowed to do its stuff instead. At least for most of the relocs, anyway. */ |
e12dd2ea | 495 | |
252b5132 | 496 | static bfd_reloc_status_type |
47b0e7ad NC |
497 | v850_elf_perform_relocation (bfd *abfd, |
498 | unsigned int r_type, | |
499 | bfd_vma addend, | |
500 | bfd_byte *address) | |
252b5132 RH |
501 | { |
502 | unsigned long insn; | |
1e50d24d | 503 | unsigned long result; |
252b5132 | 504 | bfd_signed_vma saddend = (bfd_signed_vma) addend; |
435b1e90 | 505 | |
252b5132 RH |
506 | switch (r_type) |
507 | { | |
508 | default: | |
252b5132 | 509 | return bfd_reloc_notsupported; |
435b1e90 | 510 | |
e30ddb24 NC |
511 | case R_V850_REL32: |
512 | case R_V850_ABS32: | |
252b5132 RH |
513 | bfd_put_32 (abfd, addend, address); |
514 | return bfd_reloc_ok; | |
435b1e90 | 515 | |
252b5132 RH |
516 | case R_V850_22_PCREL: |
517 | if (saddend > 0x1fffff || saddend < -0x200000) | |
518 | return bfd_reloc_overflow; | |
435b1e90 | 519 | |
252b5132 RH |
520 | if ((addend % 2) != 0) |
521 | return bfd_reloc_dangerous; | |
435b1e90 | 522 | |
252b5132 RH |
523 | insn = bfd_get_32 (abfd, address); |
524 | insn &= ~0xfffe003f; | |
525 | insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16)); | |
dc810e39 | 526 | bfd_put_32 (abfd, (bfd_vma) insn, address); |
252b5132 | 527 | return bfd_reloc_ok; |
435b1e90 | 528 | |
252b5132 RH |
529 | case R_V850_9_PCREL: |
530 | if (saddend > 0xff || saddend < -0x100) | |
531 | return bfd_reloc_overflow; | |
435b1e90 | 532 | |
252b5132 RH |
533 | if ((addend % 2) != 0) |
534 | return bfd_reloc_dangerous; | |
435b1e90 | 535 | |
252b5132 RH |
536 | insn = bfd_get_16 (abfd, address); |
537 | insn &= ~ 0xf870; | |
538 | insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3); | |
539 | break; | |
435b1e90 | 540 | |
252b5132 RH |
541 | case R_V850_HI16: |
542 | addend += (bfd_get_16 (abfd, address) << 16); | |
543 | addend = (addend >> 16); | |
544 | insn = addend; | |
545 | break; | |
435b1e90 | 546 | |
252b5132 RH |
547 | case R_V850_HI16_S: |
548 | /* Remember where this relocation took place. */ | |
549 | remember_hi16s_reloc (abfd, addend, address); | |
550 | ||
551 | addend += (bfd_get_16 (abfd, address) << 16); | |
552 | addend = (addend >> 16) + ((addend & 0x8000) != 0); | |
435b1e90 KH |
553 | |
554 | /* This relocation cannot overflow. */ | |
252b5132 RH |
555 | if (addend > 0x7fff) |
556 | addend = 0; | |
435b1e90 | 557 | |
252b5132 RH |
558 | insn = addend; |
559 | break; | |
435b1e90 | 560 | |
252b5132 | 561 | case R_V850_LO16: |
1e50d24d RS |
562 | insn = bfd_get_16 (abfd, address); |
563 | if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend)) | |
564 | return bfd_reloc_overflow; | |
565 | break; | |
252b5132 RH |
566 | |
567 | case R_V850_8: | |
568 | addend += (char) bfd_get_8 (abfd, address); | |
569 | ||
570 | saddend = (bfd_signed_vma) addend; | |
435b1e90 | 571 | |
252b5132 RH |
572 | if (saddend > 0x7f || saddend < -0x80) |
573 | return bfd_reloc_overflow; | |
574 | ||
575 | bfd_put_8 (abfd, addend, address); | |
576 | return bfd_reloc_ok; | |
577 | ||
578 | case R_V850_CALLT_16_16_OFFSET: | |
579 | addend += bfd_get_16 (abfd, address); | |
435b1e90 | 580 | |
252b5132 | 581 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 582 | |
252b5132 RH |
583 | if (saddend > 0xffff || saddend < 0) |
584 | return bfd_reloc_overflow; | |
585 | ||
586 | insn = addend; | |
587 | break; | |
435b1e90 | 588 | |
252b5132 | 589 | case R_V850_16: |
252b5132 RH |
590 | case R_V850_SDA_16_16_OFFSET: |
591 | case R_V850_ZDA_16_16_OFFSET: | |
592 | case R_V850_TDA_16_16_OFFSET: | |
593 | addend += bfd_get_16 (abfd, address); | |
435b1e90 | 594 | |
252b5132 | 595 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 596 | |
252b5132 RH |
597 | if (saddend > 0x7fff || saddend < -0x8000) |
598 | return bfd_reloc_overflow; | |
599 | ||
600 | insn = addend; | |
601 | break; | |
435b1e90 | 602 | |
252b5132 RH |
603 | case R_V850_SDA_15_16_OFFSET: |
604 | case R_V850_ZDA_15_16_OFFSET: | |
605 | insn = bfd_get_16 (abfd, address); | |
606 | addend += (insn & 0xfffe); | |
435b1e90 | 607 | |
252b5132 | 608 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 609 | |
252b5132 RH |
610 | if (saddend > 0x7ffe || saddend < -0x8000) |
611 | return bfd_reloc_overflow; | |
435b1e90 | 612 | |
252b5132 RH |
613 | if (addend & 1) |
614 | return bfd_reloc_dangerous; | |
435b1e90 | 615 | |
dc810e39 | 616 | insn = (addend &~ (bfd_vma) 1) | (insn & 1); |
252b5132 | 617 | break; |
435b1e90 | 618 | |
252b5132 RH |
619 | case R_V850_TDA_6_8_OFFSET: |
620 | insn = bfd_get_16 (abfd, address); | |
621 | addend += ((insn & 0x7e) << 1); | |
435b1e90 | 622 | |
252b5132 | 623 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 624 | |
252b5132 RH |
625 | if (saddend > 0xfc || saddend < 0) |
626 | return bfd_reloc_overflow; | |
435b1e90 | 627 | |
252b5132 RH |
628 | if (addend & 3) |
629 | return bfd_reloc_dangerous; | |
435b1e90 | 630 | |
252b5132 RH |
631 | insn &= 0xff81; |
632 | insn |= (addend >> 1); | |
633 | break; | |
435b1e90 | 634 | |
252b5132 RH |
635 | case R_V850_TDA_7_8_OFFSET: |
636 | insn = bfd_get_16 (abfd, address); | |
637 | addend += ((insn & 0x7f) << 1); | |
435b1e90 | 638 | |
252b5132 | 639 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 640 | |
252b5132 RH |
641 | if (saddend > 0xfe || saddend < 0) |
642 | return bfd_reloc_overflow; | |
435b1e90 | 643 | |
252b5132 RH |
644 | if (addend & 1) |
645 | return bfd_reloc_dangerous; | |
435b1e90 | 646 | |
252b5132 RH |
647 | insn &= 0xff80; |
648 | insn |= (addend >> 1); | |
649 | break; | |
435b1e90 | 650 | |
252b5132 RH |
651 | case R_V850_TDA_7_7_OFFSET: |
652 | insn = bfd_get_16 (abfd, address); | |
653 | addend += insn & 0x7f; | |
435b1e90 | 654 | |
252b5132 | 655 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 656 | |
252b5132 RH |
657 | if (saddend > 0x7f || saddend < 0) |
658 | return bfd_reloc_overflow; | |
435b1e90 | 659 | |
252b5132 RH |
660 | insn &= 0xff80; |
661 | insn |= addend; | |
662 | break; | |
435b1e90 | 663 | |
252b5132 RH |
664 | case R_V850_TDA_4_5_OFFSET: |
665 | insn = bfd_get_16 (abfd, address); | |
666 | addend += ((insn & 0xf) << 1); | |
435b1e90 | 667 | |
252b5132 | 668 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 669 | |
252b5132 RH |
670 | if (saddend > 0x1e || saddend < 0) |
671 | return bfd_reloc_overflow; | |
435b1e90 | 672 | |
252b5132 RH |
673 | if (addend & 1) |
674 | return bfd_reloc_dangerous; | |
435b1e90 | 675 | |
252b5132 RH |
676 | insn &= 0xfff0; |
677 | insn |= (addend >> 1); | |
678 | break; | |
435b1e90 | 679 | |
252b5132 RH |
680 | case R_V850_TDA_4_4_OFFSET: |
681 | insn = bfd_get_16 (abfd, address); | |
682 | addend += insn & 0xf; | |
435b1e90 | 683 | |
252b5132 | 684 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 685 | |
252b5132 RH |
686 | if (saddend > 0xf || saddend < 0) |
687 | return bfd_reloc_overflow; | |
435b1e90 | 688 | |
252b5132 RH |
689 | insn &= 0xfff0; |
690 | insn |= addend; | |
691 | break; | |
435b1e90 | 692 | |
1e50d24d RS |
693 | case R_V850_LO16_SPLIT_OFFSET: |
694 | insn = bfd_get_32 (abfd, address); | |
695 | result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5); | |
696 | if (! v850_elf_perform_lo16_relocation (abfd, &result, addend)) | |
697 | return bfd_reloc_overflow; | |
698 | insn = (((result << 16) & 0xfffe0000) | |
699 | | ((result << 5) & 0x20) | |
700 | | (insn & ~0xfffe0020)); | |
701 | bfd_put_32 (abfd, insn, address); | |
702 | return bfd_reloc_ok; | |
703 | ||
252b5132 RH |
704 | case R_V850_ZDA_16_16_SPLIT_OFFSET: |
705 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
706 | insn = bfd_get_32 (abfd, address); | |
707 | addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5); | |
435b1e90 | 708 | |
252b5132 | 709 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 710 | |
252b5132 RH |
711 | if (saddend > 0x7fff || saddend < -0x8000) |
712 | return bfd_reloc_overflow; | |
435b1e90 | 713 | |
252b5132 RH |
714 | insn &= 0x0001ffdf; |
715 | insn |= (addend & 1) << 5; | |
dc810e39 | 716 | insn |= (addend &~ (bfd_vma) 1) << 16; |
435b1e90 | 717 | |
dc810e39 | 718 | bfd_put_32 (abfd, (bfd_vma) insn, address); |
252b5132 | 719 | return bfd_reloc_ok; |
435b1e90 | 720 | |
252b5132 RH |
721 | case R_V850_CALLT_6_7_OFFSET: |
722 | insn = bfd_get_16 (abfd, address); | |
723 | addend += ((insn & 0x3f) << 1); | |
435b1e90 | 724 | |
252b5132 | 725 | saddend = (bfd_signed_vma) addend; |
435b1e90 | 726 | |
252b5132 RH |
727 | if (saddend > 0x7e || saddend < 0) |
728 | return bfd_reloc_overflow; | |
435b1e90 | 729 | |
252b5132 RH |
730 | if (addend & 1) |
731 | return bfd_reloc_dangerous; | |
435b1e90 | 732 | |
252b5132 RH |
733 | insn &= 0xff80; |
734 | insn |= (addend >> 1); | |
735 | break; | |
736 | ||
737 | case R_V850_GNU_VTINHERIT: | |
738 | case R_V850_GNU_VTENTRY: | |
739 | return bfd_reloc_ok; | |
740 | ||
741 | } | |
742 | ||
dc810e39 | 743 | bfd_put_16 (abfd, (bfd_vma) insn, address); |
252b5132 RH |
744 | return bfd_reloc_ok; |
745 | } | |
252b5132 RH |
746 | \f |
747 | /* Insert the addend into the instruction. */ | |
e12dd2ea | 748 | |
252b5132 | 749 | static bfd_reloc_status_type |
47b0e7ad NC |
750 | v850_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
751 | arelent *reloc, | |
752 | asymbol *symbol, | |
753 | void * data ATTRIBUTE_UNUSED, | |
754 | asection *isection, | |
755 | bfd *obfd, | |
756 | char **err ATTRIBUTE_UNUSED) | |
252b5132 RH |
757 | { |
758 | long relocation; | |
435b1e90 | 759 | |
252b5132 RH |
760 | /* If there is an output BFD, |
761 | and the symbol is not a section name (which is only defined at final link time), | |
762 | and either we are not putting the addend into the instruction | |
e12dd2ea | 763 | or the addend is zero, so there is nothing to add into the instruction |
252b5132 | 764 | then just fixup the address and return. */ |
47b0e7ad | 765 | if (obfd != NULL |
252b5132 RH |
766 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
767 | && (! reloc->howto->partial_inplace | |
768 | || reloc->addend == 0)) | |
769 | { | |
770 | reloc->address += isection->output_offset; | |
771 | return bfd_reloc_ok; | |
772 | } | |
435b1e90 | 773 | |
252b5132 RH |
774 | /* Catch relocs involving undefined symbols. */ |
775 | if (bfd_is_und_section (symbol->section) | |
776 | && (symbol->flags & BSF_WEAK) == 0 | |
777 | && obfd == NULL) | |
778 | return bfd_reloc_undefined; | |
779 | ||
780 | /* We handle final linking of some relocs ourselves. */ | |
781 | ||
782 | /* Is the address of the relocation really within the section? */ | |
07515404 | 783 | if (reloc->address > bfd_get_section_limit (abfd, isection)) |
252b5132 | 784 | return bfd_reloc_outofrange; |
435b1e90 | 785 | |
4cc11e76 | 786 | /* Work out which section the relocation is targeted at and the |
252b5132 | 787 | initial relocation command value. */ |
435b1e90 | 788 | |
b34976b6 | 789 | if (reloc->howto->pc_relative) |
86aba9db NC |
790 | return bfd_reloc_ok; |
791 | ||
252b5132 RH |
792 | /* Get symbol value. (Common symbols are special.) */ |
793 | if (bfd_is_com_section (symbol->section)) | |
794 | relocation = 0; | |
795 | else | |
796 | relocation = symbol->value; | |
435b1e90 | 797 | |
252b5132 RH |
798 | /* Convert input-section-relative symbol value to absolute + addend. */ |
799 | relocation += symbol->section->output_section->vma; | |
800 | relocation += symbol->section->output_offset; | |
801 | relocation += reloc->addend; | |
435b1e90 | 802 | |
435b1e90 | 803 | reloc->addend = relocation; |
252b5132 RH |
804 | return bfd_reloc_ok; |
805 | } | |
86aba9db NC |
806 | |
807 | /* This function is used for relocs which are only used | |
808 | for relaxing, which the linker should otherwise ignore. */ | |
809 | ||
810 | static bfd_reloc_status_type | |
47b0e7ad NC |
811 | v850_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
812 | arelent *reloc_entry, | |
813 | asymbol *symbol ATTRIBUTE_UNUSED, | |
814 | void * data ATTRIBUTE_UNUSED, | |
815 | asection *input_section, | |
816 | bfd *output_bfd, | |
817 | char **error_message ATTRIBUTE_UNUSED) | |
86aba9db NC |
818 | { |
819 | if (output_bfd != NULL) | |
820 | reloc_entry->address += input_section->output_offset; | |
821 | ||
822 | return bfd_reloc_ok; | |
823 | } | |
47b0e7ad NC |
824 | /* Note: It is REQUIRED that the 'type' value of each entry |
825 | in this array match the index of the entry in the array. */ | |
826 | static reloc_howto_type v850_elf_howto_table[] = | |
827 | { | |
828 | /* This reloc does nothing. */ | |
829 | HOWTO (R_V850_NONE, /* Type. */ | |
830 | 0, /* Rightshift. */ | |
831 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
832 | 32, /* Bitsize. */ | |
833 | FALSE, /* PC_relative. */ | |
834 | 0, /* Bitpos. */ | |
835 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
836 | bfd_elf_generic_reloc, /* Special_function. */ | |
837 | "R_V850_NONE", /* Name. */ | |
838 | FALSE, /* Partial_inplace. */ | |
839 | 0, /* Src_mask. */ | |
840 | 0, /* Dst_mask. */ | |
841 | FALSE), /* PCrel_offset. */ | |
842 | ||
843 | /* A PC relative 9 bit branch. */ | |
844 | HOWTO (R_V850_9_PCREL, /* Type. */ | |
845 | 2, /* Rightshift. */ | |
846 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
847 | 26, /* Bitsize. */ | |
848 | TRUE, /* PC_relative. */ | |
849 | 0, /* Bitpos. */ | |
850 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
851 | v850_elf_reloc, /* Special_function. */ | |
852 | "R_V850_9_PCREL", /* Name. */ | |
853 | FALSE, /* Partial_inplace. */ | |
854 | 0x00ffffff, /* Src_mask. */ | |
855 | 0x00ffffff, /* Dst_mask. */ | |
856 | TRUE), /* PCrel_offset. */ | |
857 | ||
858 | /* A PC relative 22 bit branch. */ | |
859 | HOWTO (R_V850_22_PCREL, /* Type. */ | |
860 | 2, /* Rightshift. */ | |
861 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
862 | 22, /* Bitsize. */ | |
863 | TRUE, /* PC_relative. */ | |
864 | 7, /* Bitpos. */ | |
865 | complain_overflow_signed, /* Complain_on_overflow. */ | |
866 | v850_elf_reloc, /* Special_function. */ | |
867 | "R_V850_22_PCREL", /* Name. */ | |
868 | FALSE, /* Partial_inplace. */ | |
869 | 0x07ffff80, /* Src_mask. */ | |
870 | 0x07ffff80, /* Dst_mask. */ | |
871 | TRUE), /* PCrel_offset. */ | |
872 | ||
873 | /* High 16 bits of symbol value. */ | |
874 | HOWTO (R_V850_HI16_S, /* Type. */ | |
875 | 0, /* Rightshift. */ | |
876 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
877 | 16, /* Bitsize. */ | |
878 | FALSE, /* PC_relative. */ | |
879 | 0, /* Bitpos. */ | |
880 | complain_overflow_dont, /* Complain_on_overflow. */ | |
881 | v850_elf_reloc, /* Special_function. */ | |
882 | "R_V850_HI16_S", /* Name. */ | |
883 | FALSE, /* Partial_inplace. */ | |
884 | 0xffff, /* Src_mask. */ | |
885 | 0xffff, /* Dst_mask. */ | |
886 | FALSE), /* PCrel_offset. */ | |
887 | ||
888 | /* High 16 bits of symbol value. */ | |
889 | HOWTO (R_V850_HI16, /* Type. */ | |
890 | 0, /* Rightshift. */ | |
891 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
892 | 16, /* Bitsize. */ | |
893 | FALSE, /* PC_relative. */ | |
894 | 0, /* Bitpos. */ | |
895 | complain_overflow_dont, /* Complain_on_overflow. */ | |
896 | v850_elf_reloc, /* Special_function. */ | |
897 | "R_V850_HI16", /* Name. */ | |
898 | FALSE, /* Partial_inplace. */ | |
899 | 0xffff, /* Src_mask. */ | |
900 | 0xffff, /* Dst_mask. */ | |
901 | FALSE), /* PCrel_offset. */ | |
902 | ||
903 | /* Low 16 bits of symbol value. */ | |
904 | HOWTO (R_V850_LO16, /* Type. */ | |
905 | 0, /* Rightshift. */ | |
906 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
907 | 16, /* Bitsize. */ | |
908 | FALSE, /* PC_relative. */ | |
909 | 0, /* Bitpos. */ | |
910 | complain_overflow_dont, /* Complain_on_overflow. */ | |
911 | v850_elf_reloc, /* Special_function. */ | |
912 | "R_V850_LO16", /* Name. */ | |
913 | FALSE, /* Partial_inplace. */ | |
914 | 0xffff, /* Src_mask. */ | |
915 | 0xffff, /* Dst_mask. */ | |
916 | FALSE), /* PCrel_offset. */ | |
917 | ||
918 | /* Simple 32bit reloc. */ | |
919 | HOWTO (R_V850_ABS32, /* Type. */ | |
920 | 0, /* Rightshift. */ | |
921 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
922 | 32, /* Bitsize. */ | |
923 | FALSE, /* PC_relative. */ | |
924 | 0, /* Bitpos. */ | |
925 | complain_overflow_dont, /* Complain_on_overflow. */ | |
926 | v850_elf_reloc, /* Special_function. */ | |
927 | "R_V850_ABS32", /* Name. */ | |
928 | FALSE, /* Partial_inplace. */ | |
929 | 0xffffffff, /* Src_mask. */ | |
930 | 0xffffffff, /* Dst_mask. */ | |
931 | FALSE), /* PCrel_offset. */ | |
932 | ||
933 | /* Simple 16bit reloc. */ | |
934 | HOWTO (R_V850_16, /* Type. */ | |
935 | 0, /* Rightshift. */ | |
936 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
937 | 16, /* Bitsize. */ | |
938 | FALSE, /* PC_relative. */ | |
939 | 0, /* Bitpos. */ | |
940 | complain_overflow_dont, /* Complain_on_overflow. */ | |
941 | bfd_elf_generic_reloc, /* Special_function. */ | |
942 | "R_V850_16", /* Name. */ | |
943 | FALSE, /* Partial_inplace. */ | |
944 | 0xffff, /* Src_mask. */ | |
945 | 0xffff, /* Dst_mask. */ | |
946 | FALSE), /* PCrel_offset. */ | |
947 | ||
948 | /* Simple 8bit reloc. */ | |
949 | HOWTO (R_V850_8, /* Type. */ | |
950 | 0, /* Rightshift. */ | |
951 | 0, /* Size (0 = byte, 1 = short, 2 = long). */ | |
952 | 8, /* Bitsize. */ | |
953 | FALSE, /* PC_relative. */ | |
954 | 0, /* Bitpos. */ | |
955 | complain_overflow_dont, /* Complain_on_overflow. */ | |
956 | bfd_elf_generic_reloc, /* Special_function. */ | |
957 | "R_V850_8", /* Name. */ | |
958 | FALSE, /* Partial_inplace. */ | |
959 | 0xff, /* Src_mask. */ | |
960 | 0xff, /* Dst_mask. */ | |
961 | FALSE), /* PCrel_offset. */ | |
962 | ||
963 | /* 16 bit offset from the short data area pointer. */ | |
964 | HOWTO (R_V850_SDA_16_16_OFFSET, /* Type. */ | |
965 | 0, /* Rightshift. */ | |
966 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
967 | 16, /* Bitsize. */ | |
968 | FALSE, /* PC_relative. */ | |
969 | 0, /* Bitpos. */ | |
970 | complain_overflow_dont, /* Complain_on_overflow. */ | |
971 | v850_elf_reloc, /* Special_function. */ | |
972 | "R_V850_SDA_16_16_OFFSET", /* Name. */ | |
973 | FALSE, /* Partial_inplace. */ | |
974 | 0xffff, /* Src_mask. */ | |
975 | 0xffff, /* Dst_mask. */ | |
976 | FALSE), /* PCrel_offset. */ | |
977 | ||
978 | /* 15 bit offset from the short data area pointer. */ | |
979 | HOWTO (R_V850_SDA_15_16_OFFSET, /* Type. */ | |
980 | 1, /* Rightshift. */ | |
981 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
982 | 16, /* Bitsize. */ | |
983 | FALSE, /* PC_relative. */ | |
984 | 1, /* Bitpos. */ | |
985 | complain_overflow_dont, /* Complain_on_overflow. */ | |
986 | v850_elf_reloc, /* Special_function. */ | |
987 | "R_V850_SDA_15_16_OFFSET", /* Name. */ | |
988 | FALSE, /* Partial_inplace. */ | |
989 | 0xfffe, /* Src_mask. */ | |
990 | 0xfffe, /* Dst_mask. */ | |
991 | FALSE), /* PCrel_offset. */ | |
992 | ||
993 | /* 16 bit offset from the zero data area pointer. */ | |
994 | HOWTO (R_V850_ZDA_16_16_OFFSET, /* Type. */ | |
995 | 0, /* Rightshift. */ | |
996 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
997 | 16, /* Bitsize. */ | |
998 | FALSE, /* PC_relative. */ | |
999 | 0, /* Bitpos. */ | |
1000 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1001 | v850_elf_reloc, /* Special_function. */ | |
1002 | "R_V850_ZDA_16_16_OFFSET", /* Name. */ | |
1003 | FALSE, /* Partial_inplace. */ | |
1004 | 0xffff, /* Src_mask. */ | |
1005 | 0xffff, /* Dst_mask. */ | |
1006 | FALSE), /* PCrel_offset. */ | |
1007 | ||
1008 | /* 15 bit offset from the zero data area pointer. */ | |
1009 | HOWTO (R_V850_ZDA_15_16_OFFSET, /* Type. */ | |
1010 | 1, /* Rightshift. */ | |
1011 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1012 | 16, /* Bitsize. */ | |
1013 | FALSE, /* PC_relative. */ | |
1014 | 1, /* Bitpos. */ | |
1015 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1016 | v850_elf_reloc, /* Special_function. */ | |
1017 | "R_V850_ZDA_15_16_OFFSET", /* Name. */ | |
1018 | FALSE, /* Partial_inplace. */ | |
1019 | 0xfffe, /* Src_mask. */ | |
1020 | 0xfffe, /* Dst_mask. */ | |
1021 | FALSE), /* PCrel_offset. */ | |
1022 | ||
1023 | /* 6 bit offset from the tiny data area pointer. */ | |
1024 | HOWTO (R_V850_TDA_6_8_OFFSET, /* Type. */ | |
1025 | 2, /* Rightshift. */ | |
1026 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1027 | 8, /* Bitsize. */ | |
1028 | FALSE, /* PC_relative. */ | |
1029 | 1, /* Bitpos. */ | |
1030 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1031 | v850_elf_reloc, /* Special_function. */ | |
1032 | "R_V850_TDA_6_8_OFFSET", /* Name. */ | |
1033 | FALSE, /* Partial_inplace. */ | |
1034 | 0x7e, /* Src_mask. */ | |
1035 | 0x7e, /* Dst_mask. */ | |
1036 | FALSE), /* PCrel_offset. */ | |
1037 | ||
1038 | /* 8 bit offset from the tiny data area pointer. */ | |
1039 | HOWTO (R_V850_TDA_7_8_OFFSET, /* Type. */ | |
1040 | 1, /* Rightshift. */ | |
1041 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1042 | 8, /* Bitsize. */ | |
1043 | FALSE, /* PC_relative. */ | |
1044 | 0, /* Bitpos. */ | |
1045 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1046 | v850_elf_reloc, /* Special_function. */ | |
1047 | "R_V850_TDA_7_8_OFFSET", /* Name. */ | |
1048 | FALSE, /* Partial_inplace. */ | |
1049 | 0x7f, /* Src_mask. */ | |
1050 | 0x7f, /* Dst_mask. */ | |
1051 | FALSE), /* PCrel_offset. */ | |
1052 | ||
1053 | /* 7 bit offset from the tiny data area pointer. */ | |
1054 | HOWTO (R_V850_TDA_7_7_OFFSET, /* Type. */ | |
1055 | 0, /* Rightshift. */ | |
1056 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1057 | 7, /* Bitsize. */ | |
1058 | FALSE, /* PC_relative. */ | |
1059 | 0, /* Bitpos. */ | |
1060 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1061 | v850_elf_reloc, /* Special_function. */ | |
1062 | "R_V850_TDA_7_7_OFFSET", /* Name. */ | |
1063 | FALSE, /* Partial_inplace. */ | |
1064 | 0x7f, /* Src_mask. */ | |
1065 | 0x7f, /* Dst_mask. */ | |
1066 | FALSE), /* PCrel_offset. */ | |
1067 | ||
1068 | /* 16 bit offset from the tiny data area pointer! */ | |
1069 | HOWTO (R_V850_TDA_16_16_OFFSET, /* Type. */ | |
1070 | 0, /* Rightshift. */ | |
1071 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1072 | 16, /* Bitsize. */ | |
1073 | FALSE, /* PC_relative. */ | |
1074 | 0, /* Bitpos. */ | |
1075 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1076 | v850_elf_reloc, /* Special_function. */ | |
1077 | "R_V850_TDA_16_16_OFFSET", /* Name. */ | |
1078 | FALSE, /* Partial_inplace. */ | |
1079 | 0xffff, /* Src_mask. */ | |
1080 | 0xfff, /* Dst_mask. */ | |
1081 | FALSE), /* PCrel_offset. */ | |
1082 | ||
1083 | /* 5 bit offset from the tiny data area pointer. */ | |
1084 | HOWTO (R_V850_TDA_4_5_OFFSET, /* Type. */ | |
1085 | 1, /* Rightshift. */ | |
1086 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1087 | 5, /* Bitsize. */ | |
1088 | FALSE, /* PC_relative. */ | |
1089 | 0, /* Bitpos. */ | |
1090 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1091 | v850_elf_reloc, /* Special_function. */ | |
1092 | "R_V850_TDA_4_5_OFFSET", /* Name. */ | |
1093 | FALSE, /* Partial_inplace. */ | |
1094 | 0x0f, /* Src_mask. */ | |
1095 | 0x0f, /* Dst_mask. */ | |
1096 | FALSE), /* PCrel_offset. */ | |
1097 | ||
1098 | /* 4 bit offset from the tiny data area pointer. */ | |
1099 | HOWTO (R_V850_TDA_4_4_OFFSET, /* Type. */ | |
1100 | 0, /* Rightshift. */ | |
1101 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1102 | 4, /* Bitsize. */ | |
1103 | FALSE, /* PC_relative. */ | |
1104 | 0, /* Bitpos. */ | |
1105 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1106 | v850_elf_reloc, /* Special_function. */ | |
1107 | "R_V850_TDA_4_4_OFFSET", /* Name. */ | |
1108 | FALSE, /* Partial_inplace. */ | |
1109 | 0x0f, /* Src_mask. */ | |
1110 | 0x0f, /* Dst_mask. */ | |
1111 | FALSE), /* PCrel_offset. */ | |
1112 | ||
1113 | /* 16 bit offset from the short data area pointer. */ | |
1114 | HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* Type. */ | |
1115 | 0, /* Rightshift. */ | |
1116 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1117 | 16, /* Bitsize. */ | |
1118 | FALSE, /* PC_relative. */ | |
1119 | 0, /* Bitpos. */ | |
1120 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1121 | v850_elf_reloc, /* Special_function. */ | |
1122 | "R_V850_SDA_16_16_SPLIT_OFFSET",/* Name. */ | |
1123 | FALSE, /* Partial_inplace. */ | |
1124 | 0xfffe0020, /* Src_mask. */ | |
1125 | 0xfffe0020, /* Dst_mask. */ | |
1126 | FALSE), /* PCrel_offset. */ | |
1127 | ||
1128 | /* 16 bit offset from the zero data area pointer. */ | |
1129 | HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* Type. */ | |
1130 | 0, /* Rightshift. */ | |
1131 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1132 | 16, /* Bitsize. */ | |
1133 | FALSE, /* PC_relative. */ | |
1134 | 0, /* Bitpos. */ | |
1135 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1136 | v850_elf_reloc, /* Special_function. */ | |
1137 | "R_V850_ZDA_16_16_SPLIT_OFFSET",/* Name. */ | |
1138 | FALSE, /* Partial_inplace. */ | |
1139 | 0xfffe0020, /* Src_mask. */ | |
1140 | 0xfffe0020, /* Dst_mask. */ | |
1141 | FALSE), /* PCrel_offset. */ | |
1142 | ||
1143 | /* 6 bit offset from the call table base pointer. */ | |
1144 | HOWTO (R_V850_CALLT_6_7_OFFSET, /* Type. */ | |
1145 | 0, /* Rightshift. */ | |
1146 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1147 | 7, /* Bitsize. */ | |
1148 | FALSE, /* PC_relative. */ | |
1149 | 0, /* Bitpos. */ | |
1150 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1151 | v850_elf_reloc, /* Special_function. */ | |
1152 | "R_V850_CALLT_6_7_OFFSET", /* Name. */ | |
1153 | FALSE, /* Partial_inplace. */ | |
1154 | 0x3f, /* Src_mask. */ | |
1155 | 0x3f, /* Dst_mask. */ | |
1156 | FALSE), /* PCrel_offset. */ | |
1157 | ||
1158 | /* 16 bit offset from the call table base pointer. */ | |
1159 | HOWTO (R_V850_CALLT_16_16_OFFSET, /* Type. */ | |
1160 | 0, /* Rightshift. */ | |
1161 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1162 | 16, /* Bitsize. */ | |
1163 | FALSE, /* PC_relative. */ | |
1164 | 0, /* Bitpos. */ | |
1165 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1166 | v850_elf_reloc, /* Special_function. */ | |
1167 | "R_V850_CALLT_16_16_OFFSET", /* Name. */ | |
1168 | FALSE, /* Partial_inplace. */ | |
1169 | 0xffff, /* Src_mask. */ | |
1170 | 0xffff, /* Dst_mask. */ | |
1171 | FALSE), /* PCrel_offset. */ | |
1172 | ||
1173 | /* GNU extension to record C++ vtable hierarchy */ | |
1174 | HOWTO (R_V850_GNU_VTINHERIT, /* Type. */ | |
1175 | 0, /* Rightshift. */ | |
1176 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1177 | 0, /* Bitsize. */ | |
1178 | FALSE, /* PC_relative. */ | |
1179 | 0, /* Bitpos. */ | |
1180 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1181 | NULL, /* Special_function. */ | |
1182 | "R_V850_GNU_VTINHERIT", /* Name. */ | |
1183 | FALSE, /* Partial_inplace. */ | |
1184 | 0, /* Src_mask. */ | |
1185 | 0, /* Dst_mask. */ | |
1186 | FALSE), /* PCrel_offset. */ | |
1187 | ||
1188 | /* GNU extension to record C++ vtable member usage */ | |
1189 | HOWTO (R_V850_GNU_VTENTRY, /* Type. */ | |
1190 | 0, /* Rightshift. */ | |
1191 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1192 | 0, /* Bitsize. */ | |
1193 | FALSE, /* PC_relative. */ | |
1194 | 0, /* Bitpos. */ | |
1195 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1196 | _bfd_elf_rel_vtable_reloc_fn, /* Special_function. */ | |
1197 | "R_V850_GNU_VTENTRY", /* Name. */ | |
1198 | FALSE, /* Partial_inplace. */ | |
1199 | 0, /* Src_mask. */ | |
1200 | 0, /* Dst_mask. */ | |
1201 | FALSE), /* PCrel_offset. */ | |
1202 | ||
1203 | /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall | |
1204 | pseudo-op when it finds a function call which can be relaxed. */ | |
1205 | HOWTO (R_V850_LONGCALL, /* Type. */ | |
1206 | 0, /* Rightshift. */ | |
1207 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1208 | 32, /* Bitsize. */ | |
1209 | TRUE, /* PC_relative. */ | |
1210 | 0, /* Bitpos. */ | |
1211 | complain_overflow_signed, /* Complain_on_overflow. */ | |
1212 | v850_elf_ignore_reloc, /* Special_function. */ | |
1213 | "R_V850_LONGCALL", /* Name. */ | |
1214 | FALSE, /* Partial_inplace. */ | |
1215 | 0, /* Src_mask. */ | |
1216 | 0, /* Dst_mask. */ | |
1217 | TRUE), /* PCrel_offset. */ | |
1218 | ||
1219 | /* Indicates a .longjump pseudo-op. The compiler will generate a | |
1220 | .longjump pseudo-op when it finds a branch which can be relaxed. */ | |
1221 | HOWTO (R_V850_LONGJUMP, /* Type. */ | |
1222 | 0, /* Rightshift. */ | |
1223 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1224 | 32, /* Bitsize. */ | |
1225 | TRUE, /* PC_relative. */ | |
1226 | 0, /* Bitpos. */ | |
1227 | complain_overflow_signed, /* Complain_on_overflow. */ | |
1228 | v850_elf_ignore_reloc, /* Special_function. */ | |
1229 | "R_V850_LONGJUMP", /* Name. */ | |
1230 | FALSE, /* Partial_inplace. */ | |
1231 | 0, /* Src_mask. */ | |
1232 | 0, /* Dst_mask. */ | |
1233 | TRUE), /* PCrel_offset. */ | |
1234 | ||
1235 | HOWTO (R_V850_ALIGN, /* Type. */ | |
1236 | 0, /* Rightshift. */ | |
1237 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1238 | 0, /* Bitsize. */ | |
1239 | FALSE, /* PC_relative. */ | |
1240 | 0, /* Bitpos. */ | |
1241 | complain_overflow_unsigned, /* Complain_on_overflow. */ | |
1242 | v850_elf_ignore_reloc, /* Special_function. */ | |
1243 | "R_V850_ALIGN", /* Name. */ | |
1244 | FALSE, /* Partial_inplace. */ | |
1245 | 0, /* Src_mask. */ | |
1246 | 0, /* Dst_mask. */ | |
1247 | TRUE), /* PCrel_offset. */ | |
1248 | ||
1249 | /* Simple pc-relative 32bit reloc. */ | |
1250 | HOWTO (R_V850_REL32, /* Type. */ | |
1251 | 0, /* Rightshift. */ | |
1252 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1253 | 32, /* Bitsize. */ | |
1254 | TRUE, /* PC_relative. */ | |
1255 | 0, /* Bitpos. */ | |
1256 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1257 | v850_elf_reloc, /* Special_function. */ | |
1258 | "R_V850_REL32", /* Name. */ | |
1259 | FALSE, /* Partial_inplace. */ | |
1260 | 0xffffffff, /* Src_mask. */ | |
1261 | 0xffffffff, /* Dst_mask. */ | |
1262 | FALSE), /* PCrel_offset. */ | |
1263 | ||
1264 | /* An ld.bu version of R_V850_LO16. */ | |
1265 | HOWTO (R_V850_LO16_SPLIT_OFFSET, /* Type. */ | |
1266 | 0, /* Rightshift. */ | |
1267 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
1268 | 16, /* Bitsize. */ | |
1269 | FALSE, /* PC_relative. */ | |
1270 | 0, /* Bitpos. */ | |
1271 | complain_overflow_dont, /* Complain_on_overflow. */ | |
1272 | v850_elf_reloc, /* Special_function. */ | |
1273 | "R_V850_LO16_SPLIT_OFFSET", /* Name. */ | |
1274 | FALSE, /* Partial_inplace. */ | |
1275 | 0xfffe0020, /* Src_mask. */ | |
1276 | 0xfffe0020, /* Dst_mask. */ | |
1277 | FALSE), /* PCrel_offset. */ | |
1278 | }; | |
1279 | ||
1280 | /* Map BFD reloc types to V850 ELF reloc types. */ | |
1281 | ||
1282 | struct v850_elf_reloc_map | |
1283 | { | |
1284 | /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an | |
1285 | unsigned char. */ | |
1286 | bfd_reloc_code_real_type bfd_reloc_val; | |
1287 | unsigned int elf_reloc_val; | |
1288 | }; | |
1289 | ||
1290 | static const struct v850_elf_reloc_map v850_elf_reloc_map[] = | |
1291 | { | |
1292 | { BFD_RELOC_NONE, R_V850_NONE }, | |
1293 | { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL }, | |
1294 | { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL }, | |
1295 | { BFD_RELOC_HI16_S, R_V850_HI16_S }, | |
1296 | { BFD_RELOC_HI16, R_V850_HI16 }, | |
1297 | { BFD_RELOC_LO16, R_V850_LO16 }, | |
1298 | { BFD_RELOC_32, R_V850_ABS32 }, | |
1299 | { BFD_RELOC_32_PCREL, R_V850_REL32 }, | |
1300 | { BFD_RELOC_16, R_V850_16 }, | |
1301 | { BFD_RELOC_8, R_V850_8 }, | |
1302 | { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET }, | |
1303 | { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, | |
1304 | { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, | |
1305 | { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, | |
1306 | { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, | |
1307 | { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, | |
1308 | { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, | |
1309 | { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, | |
1310 | { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, | |
1311 | { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, | |
1312 | { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET }, | |
1313 | { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, | |
1314 | { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, | |
1315 | { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, | |
1316 | { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, | |
1317 | { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT }, | |
1318 | { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY }, | |
1319 | { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL }, | |
1320 | { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP }, | |
1321 | { BFD_RELOC_V850_ALIGN, R_V850_ALIGN }, | |
1322 | ||
1323 | }; | |
1324 | \f | |
1325 | /* Map a bfd relocation into the appropriate howto structure. */ | |
1326 | ||
1327 | static reloc_howto_type * | |
1328 | v850_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1329 | bfd_reloc_code_real_type code) | |
1330 | { | |
1331 | unsigned int i; | |
1332 | ||
1333 | for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;) | |
1334 | if (v850_elf_reloc_map[i].bfd_reloc_val == code) | |
1335 | { | |
1336 | unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val; | |
1337 | ||
1338 | BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val); | |
1339 | ||
1340 | return v850_elf_howto_table + elf_reloc_val; | |
1341 | } | |
1342 | ||
1343 | return NULL; | |
1344 | } | |
157090f7 AM |
1345 | |
1346 | static reloc_howto_type * | |
1347 | v850_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1348 | const char *r_name) | |
1349 | { | |
1350 | unsigned int i; | |
1351 | ||
1352 | for (i = 0; | |
1353 | i < sizeof (v850_elf_howto_table) / sizeof (v850_elf_howto_table[0]); | |
1354 | i++) | |
1355 | if (v850_elf_howto_table[i].name != NULL | |
1356 | && strcasecmp (v850_elf_howto_table[i].name, r_name) == 0) | |
1357 | return &v850_elf_howto_table[i]; | |
1358 | ||
1359 | return NULL; | |
1360 | } | |
47b0e7ad NC |
1361 | \f |
1362 | /* Set the howto pointer for an V850 ELF reloc. */ | |
1363 | ||
1364 | static void | |
1365 | v850_elf_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
1366 | arelent *cache_ptr, | |
1367 | Elf_Internal_Rela *dst) | |
1368 | { | |
1369 | unsigned int r_type; | |
1370 | ||
1371 | r_type = ELF32_R_TYPE (dst->r_info); | |
1372 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
1373 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
1374 | } | |
1375 | ||
1376 | /* Set the howto pointer for a V850 ELF reloc (type RELA). */ | |
1377 | ||
1378 | static void | |
1379 | v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, | |
1380 | arelent * cache_ptr, | |
1381 | Elf_Internal_Rela *dst) | |
1382 | { | |
1383 | unsigned int r_type; | |
1384 | ||
1385 | r_type = ELF32_R_TYPE (dst->r_info); | |
1386 | BFD_ASSERT (r_type < (unsigned int) R_V850_max); | |
1387 | cache_ptr->howto = &v850_elf_howto_table[r_type]; | |
1388 | } | |
252b5132 | 1389 | \f |
b34976b6 | 1390 | static bfd_boolean |
47b0e7ad | 1391 | v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 RH |
1392 | { |
1393 | return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.')) | |
1394 | || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')); | |
1395 | } | |
252b5132 | 1396 | \f |
5cec6941 NC |
1397 | /* We overload some of the bfd_reloc error codes for own purposes. */ |
1398 | #define bfd_reloc_gp_not_found bfd_reloc_other | |
1399 | #define bfd_reloc_ep_not_found bfd_reloc_continue | |
1400 | #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1) | |
1401 | ||
252b5132 | 1402 | /* Perform a relocation as part of a final link. */ |
e12dd2ea | 1403 | |
252b5132 | 1404 | static bfd_reloc_status_type |
47b0e7ad NC |
1405 | v850_elf_final_link_relocate (reloc_howto_type *howto, |
1406 | bfd *input_bfd, | |
1407 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
1408 | asection *input_section, | |
1409 | bfd_byte *contents, | |
1410 | bfd_vma offset, | |
1411 | bfd_vma value, | |
1412 | bfd_vma addend, | |
1413 | struct bfd_link_info *info, | |
1414 | asection *sym_sec, | |
1415 | int is_local ATTRIBUTE_UNUSED) | |
252b5132 | 1416 | { |
b34976b6 AM |
1417 | unsigned int r_type = howto->type; |
1418 | bfd_byte *hit_data = contents + offset; | |
252b5132 RH |
1419 | |
1420 | /* Adjust the value according to the relocation. */ | |
1421 | switch (r_type) | |
1422 | { | |
1423 | case R_V850_9_PCREL: | |
1424 | value -= (input_section->output_section->vma | |
1425 | + input_section->output_offset); | |
1426 | value -= offset; | |
1427 | break; | |
435b1e90 | 1428 | |
252b5132 RH |
1429 | case R_V850_22_PCREL: |
1430 | value -= (input_section->output_section->vma | |
1431 | + input_section->output_offset | |
1432 | + offset); | |
1433 | ||
232fb1a3 NC |
1434 | /* If the sign extension will corrupt the value then we have overflowed. */ |
1435 | if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000)) | |
1436 | return bfd_reloc_overflow; | |
435b1e90 | 1437 | |
47b0e7ad | 1438 | /* Only the bottom 24 bits of the PC are valid. */ |
e12dd2ea | 1439 | value = SEXT24 (value); |
252b5132 | 1440 | break; |
435b1e90 | 1441 | |
e30ddb24 NC |
1442 | case R_V850_REL32: |
1443 | value -= (input_section->output_section->vma | |
1444 | + input_section->output_offset | |
1445 | + offset); | |
1446 | break; | |
1447 | ||
252b5132 RH |
1448 | case R_V850_HI16_S: |
1449 | case R_V850_HI16: | |
1450 | case R_V850_LO16: | |
1e50d24d | 1451 | case R_V850_LO16_SPLIT_OFFSET: |
252b5132 | 1452 | case R_V850_16: |
e30ddb24 | 1453 | case R_V850_ABS32: |
252b5132 RH |
1454 | case R_V850_8: |
1455 | break; | |
1456 | ||
435b1e90 | 1457 | case R_V850_ZDA_15_16_OFFSET: |
252b5132 RH |
1458 | case R_V850_ZDA_16_16_OFFSET: |
1459 | case R_V850_ZDA_16_16_SPLIT_OFFSET: | |
1460 | if (sym_sec == NULL) | |
1461 | return bfd_reloc_undefined; | |
435b1e90 | 1462 | |
252b5132 RH |
1463 | value -= sym_sec->output_section->vma; |
1464 | break; | |
1465 | ||
1466 | case R_V850_SDA_15_16_OFFSET: | |
1467 | case R_V850_SDA_16_16_OFFSET: | |
1468 | case R_V850_SDA_16_16_SPLIT_OFFSET: | |
1469 | { | |
1470 | unsigned long gp; | |
1471 | struct bfd_link_hash_entry * h; | |
1472 | ||
1473 | if (sym_sec == NULL) | |
1474 | return bfd_reloc_undefined; | |
435b1e90 | 1475 | |
252b5132 | 1476 | /* Get the value of __gp. */ |
b34976b6 | 1477 | h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE); |
47b0e7ad | 1478 | if (h == NULL |
252b5132 | 1479 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1480 | return bfd_reloc_gp_not_found; |
252b5132 RH |
1481 | |
1482 | gp = (h->u.def.value | |
1483 | + h->u.def.section->output_section->vma | |
1484 | + h->u.def.section->output_offset); | |
1485 | ||
1486 | value -= sym_sec->output_section->vma; | |
1487 | value -= (gp - sym_sec->output_section->vma); | |
1488 | } | |
1489 | break; | |
1490 | ||
1491 | case R_V850_TDA_4_4_OFFSET: | |
1492 | case R_V850_TDA_4_5_OFFSET: | |
1493 | case R_V850_TDA_16_16_OFFSET: | |
1494 | case R_V850_TDA_7_7_OFFSET: | |
1495 | case R_V850_TDA_7_8_OFFSET: | |
1496 | case R_V850_TDA_6_8_OFFSET: | |
1497 | { | |
1498 | unsigned long ep; | |
1499 | struct bfd_link_hash_entry * h; | |
435b1e90 | 1500 | |
252b5132 | 1501 | /* Get the value of __ep. */ |
b34976b6 | 1502 | h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE); |
47b0e7ad | 1503 | if (h == NULL |
252b5132 | 1504 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1505 | return bfd_reloc_ep_not_found; |
252b5132 RH |
1506 | |
1507 | ep = (h->u.def.value | |
1508 | + h->u.def.section->output_section->vma | |
1509 | + h->u.def.section->output_offset); | |
1510 | ||
1511 | value -= ep; | |
1512 | } | |
1513 | break; | |
435b1e90 | 1514 | |
252b5132 RH |
1515 | case R_V850_CALLT_6_7_OFFSET: |
1516 | { | |
1517 | unsigned long ctbp; | |
1518 | struct bfd_link_hash_entry * h; | |
435b1e90 | 1519 | |
252b5132 | 1520 | /* Get the value of __ctbp. */ |
b34976b6 | 1521 | h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE); |
47b0e7ad | 1522 | if (h == NULL |
252b5132 | 1523 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1524 | return bfd_reloc_ctbp_not_found; |
252b5132 RH |
1525 | |
1526 | ctbp = (h->u.def.value | |
1527 | + h->u.def.section->output_section->vma | |
1528 | + h->u.def.section->output_offset); | |
1529 | value -= ctbp; | |
1530 | } | |
1531 | break; | |
435b1e90 | 1532 | |
252b5132 RH |
1533 | case R_V850_CALLT_16_16_OFFSET: |
1534 | { | |
1535 | unsigned long ctbp; | |
1536 | struct bfd_link_hash_entry * h; | |
1537 | ||
1538 | if (sym_sec == NULL) | |
1539 | return bfd_reloc_undefined; | |
435b1e90 | 1540 | |
252b5132 | 1541 | /* Get the value of __ctbp. */ |
b34976b6 | 1542 | h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE); |
47b0e7ad | 1543 | if (h == NULL |
252b5132 | 1544 | || h->type != bfd_link_hash_defined) |
5cec6941 | 1545 | return bfd_reloc_ctbp_not_found; |
252b5132 RH |
1546 | |
1547 | ctbp = (h->u.def.value | |
1548 | + h->u.def.section->output_section->vma | |
1549 | + h->u.def.section->output_offset); | |
1550 | ||
1551 | value -= sym_sec->output_section->vma; | |
1552 | value -= (ctbp - sym_sec->output_section->vma); | |
1553 | } | |
1554 | break; | |
435b1e90 | 1555 | |
252b5132 RH |
1556 | case R_V850_NONE: |
1557 | case R_V850_GNU_VTINHERIT: | |
1558 | case R_V850_GNU_VTENTRY: | |
86aba9db NC |
1559 | case R_V850_LONGCALL: |
1560 | case R_V850_LONGJUMP: | |
1561 | case R_V850_ALIGN: | |
252b5132 RH |
1562 | return bfd_reloc_ok; |
1563 | ||
1564 | default: | |
1565 | return bfd_reloc_notsupported; | |
1566 | } | |
1567 | ||
1568 | /* Perform the relocation. */ | |
435b1e90 | 1569 | return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data); |
252b5132 | 1570 | } |
252b5132 RH |
1571 | \f |
1572 | /* Relocate an V850 ELF section. */ | |
e12dd2ea | 1573 | |
b34976b6 | 1574 | static bfd_boolean |
47b0e7ad NC |
1575 | v850_elf_relocate_section (bfd *output_bfd, |
1576 | struct bfd_link_info *info, | |
1577 | bfd *input_bfd, | |
1578 | asection *input_section, | |
1579 | bfd_byte *contents, | |
1580 | Elf_Internal_Rela *relocs, | |
1581 | Elf_Internal_Sym *local_syms, | |
1582 | asection **local_sections) | |
252b5132 | 1583 | { |
b34976b6 AM |
1584 | Elf_Internal_Shdr *symtab_hdr; |
1585 | struct elf_link_hash_entry **sym_hashes; | |
1586 | Elf_Internal_Rela *rel; | |
1587 | Elf_Internal_Rela *relend; | |
252b5132 RH |
1588 | |
1589 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
1590 | sym_hashes = elf_sym_hashes (input_bfd); | |
1591 | ||
252b5132 RH |
1592 | /* Reset the list of remembered HI16S relocs to empty. */ |
1593 | free_hi16s = previous_hi16s; | |
1594 | previous_hi16s = NULL; | |
1595 | hi16s_counter = 0; | |
435b1e90 | 1596 | |
252b5132 RH |
1597 | rel = relocs; |
1598 | relend = relocs + input_section->reloc_count; | |
1599 | for (; rel < relend; rel++) | |
1600 | { | |
b34976b6 AM |
1601 | int r_type; |
1602 | reloc_howto_type *howto; | |
1603 | unsigned long r_symndx; | |
1604 | Elf_Internal_Sym *sym; | |
1605 | asection *sec; | |
1606 | struct elf_link_hash_entry *h; | |
1607 | bfd_vma relocation; | |
1608 | bfd_reloc_status_type r; | |
252b5132 RH |
1609 | |
1610 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1611 | r_type = ELF32_R_TYPE (rel->r_info); | |
1612 | ||
1613 | if (r_type == R_V850_GNU_VTENTRY | |
1614 | || r_type == R_V850_GNU_VTINHERIT) | |
1615 | continue; | |
1616 | ||
f0fe0e16 | 1617 | howto = v850_elf_howto_table + r_type; |
252b5132 RH |
1618 | h = NULL; |
1619 | sym = NULL; | |
1620 | sec = NULL; | |
1621 | if (r_symndx < symtab_hdr->sh_info) | |
1622 | { | |
1623 | sym = local_syms + r_symndx; | |
1624 | sec = local_sections[r_symndx]; | |
8517fae7 | 1625 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1626 | } |
1627 | else | |
1628 | { | |
59c2e50f | 1629 | bfd_boolean unresolved_reloc, warned; |
435b1e90 | 1630 | |
47b0e7ad NC |
1631 | /* Note - this check is delayed until now as it is possible and |
1632 | valid to have a file without any symbols but with relocs that | |
1633 | can be processed. */ | |
641bd093 NC |
1634 | if (sym_hashes == NULL) |
1635 | { | |
1636 | info->callbacks->warning | |
1637 | (info, "no hash table available", | |
1638 | NULL, input_bfd, input_section, (bfd_vma) 0); | |
1639 | ||
1640 | return FALSE; | |
1641 | } | |
1642 | ||
b2a8e766 AM |
1643 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1644 | r_symndx, symtab_hdr, sym_hashes, | |
1645 | h, sec, relocation, | |
1646 | unresolved_reloc, warned); | |
252b5132 RH |
1647 | } |
1648 | ||
ab96bf03 AM |
1649 | if (sec != NULL && elf_discarded_section (sec)) |
1650 | { | |
1651 | /* For relocs against symbols from removed linkonce sections, | |
1652 | or sections discarded by a linker script, we just want the | |
1653 | section contents zeroed. Avoid any special processing. */ | |
1654 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1655 | rel->r_info = 0; | |
1656 | rel->r_addend = 0; | |
1657 | continue; | |
1658 | } | |
1659 | ||
1660 | if (info->relocatable) | |
1661 | continue; | |
1662 | ||
e12dd2ea | 1663 | /* FIXME: We should use the addend, but the COFF relocations don't. */ |
252b5132 RH |
1664 | r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd, |
1665 | input_section, | |
1666 | contents, rel->r_offset, | |
1667 | relocation, rel->r_addend, | |
1668 | info, sec, h == NULL); | |
1669 | ||
1670 | if (r != bfd_reloc_ok) | |
1671 | { | |
1672 | const char * name; | |
47b0e7ad | 1673 | const char * msg = NULL; |
252b5132 RH |
1674 | |
1675 | if (h != NULL) | |
1676 | name = h->root.root.string; | |
1677 | else | |
1678 | { | |
1679 | name = (bfd_elf_string_from_elf_section | |
1680 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1681 | if (name == NULL || *name == '\0') | |
1682 | name = bfd_section_name (input_bfd, sec); | |
1683 | } | |
1684 | ||
1685 | switch (r) | |
1686 | { | |
1687 | case bfd_reloc_overflow: | |
1688 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1689 | (info, (h ? &h->root : NULL), name, howto->name, |
1690 | (bfd_vma) 0, input_bfd, input_section, | |
1691 | rel->r_offset))) | |
b34976b6 | 1692 | return FALSE; |
252b5132 RH |
1693 | break; |
1694 | ||
1695 | case bfd_reloc_undefined: | |
1696 | if (! ((*info->callbacks->undefined_symbol) | |
1697 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1698 | rel->r_offset, TRUE))) |
1699 | return FALSE; | |
252b5132 RH |
1700 | break; |
1701 | ||
1702 | case bfd_reloc_outofrange: | |
1703 | msg = _("internal error: out of range error"); | |
1704 | goto common_error; | |
1705 | ||
1706 | case bfd_reloc_notsupported: | |
1707 | msg = _("internal error: unsupported relocation error"); | |
1708 | goto common_error; | |
1709 | ||
1710 | case bfd_reloc_dangerous: | |
1711 | msg = _("internal error: dangerous relocation"); | |
1712 | goto common_error; | |
1713 | ||
5cec6941 | 1714 | case bfd_reloc_gp_not_found: |
252b5132 RH |
1715 | msg = _("could not locate special linker symbol __gp"); |
1716 | goto common_error; | |
1717 | ||
5cec6941 | 1718 | case bfd_reloc_ep_not_found: |
252b5132 RH |
1719 | msg = _("could not locate special linker symbol __ep"); |
1720 | goto common_error; | |
1721 | ||
5cec6941 | 1722 | case bfd_reloc_ctbp_not_found: |
252b5132 RH |
1723 | msg = _("could not locate special linker symbol __ctbp"); |
1724 | goto common_error; | |
435b1e90 | 1725 | |
252b5132 RH |
1726 | default: |
1727 | msg = _("internal error: unknown error"); | |
1728 | /* fall through */ | |
1729 | ||
1730 | common_error: | |
1731 | if (!((*info->callbacks->warning) | |
1732 | (info, msg, name, input_bfd, input_section, | |
1733 | rel->r_offset))) | |
b34976b6 | 1734 | return FALSE; |
252b5132 RH |
1735 | break; |
1736 | } | |
1737 | } | |
1738 | } | |
1739 | ||
b34976b6 | 1740 | return TRUE; |
252b5132 RH |
1741 | } |
1742 | ||
252b5132 | 1743 | static asection * |
47b0e7ad | 1744 | v850_elf_gc_mark_hook (asection *sec, |
07adf181 | 1745 | struct bfd_link_info *info, |
47b0e7ad NC |
1746 | Elf_Internal_Rela *rel, |
1747 | struct elf_link_hash_entry *h, | |
1748 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1749 | { |
1750 | if (h != NULL) | |
07adf181 | 1751 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
1752 | { |
1753 | case R_V850_GNU_VTINHERIT: | |
1754 | case R_V850_GNU_VTENTRY: | |
07adf181 AM |
1755 | return NULL; |
1756 | } | |
9ad5cbcf | 1757 | |
07adf181 | 1758 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 | 1759 | } |
e12dd2ea | 1760 | |
252b5132 | 1761 | /* Set the right machine number. */ |
e12dd2ea | 1762 | |
b34976b6 | 1763 | static bfd_boolean |
47b0e7ad | 1764 | v850_elf_object_p (bfd *abfd) |
252b5132 RH |
1765 | { |
1766 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) | |
1767 | { | |
1768 | default: | |
250d94fd AM |
1769 | case E_V850_ARCH: |
1770 | bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850); | |
1771 | break; | |
1772 | case E_V850E_ARCH: | |
1773 | bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); | |
1774 | break; | |
8ad30312 NC |
1775 | case E_V850E1_ARCH: |
1776 | bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1); | |
1777 | break; | |
252b5132 | 1778 | } |
b34976b6 | 1779 | return TRUE; |
252b5132 RH |
1780 | } |
1781 | ||
1782 | /* Store the machine number in the flags field. */ | |
e12dd2ea | 1783 | |
252b5132 | 1784 | static void |
47b0e7ad NC |
1785 | v850_elf_final_write_processing (bfd *abfd, |
1786 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 RH |
1787 | { |
1788 | unsigned long val; | |
1789 | ||
1790 | switch (bfd_get_mach (abfd)) | |
1791 | { | |
b34976b6 | 1792 | default: |
47b0e7ad NC |
1793 | case bfd_mach_v850: val = E_V850_ARCH; break; |
1794 | case bfd_mach_v850e: val = E_V850E_ARCH; break; | |
1795 | case bfd_mach_v850e1: val = E_V850E1_ARCH; break; | |
252b5132 RH |
1796 | } |
1797 | ||
1798 | elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH; | |
1799 | elf_elfheader (abfd)->e_flags |= val; | |
1800 | } | |
1801 | ||
435b1e90 | 1802 | /* Function to keep V850 specific file flags. */ |
e12dd2ea | 1803 | |
b34976b6 | 1804 | static bfd_boolean |
47b0e7ad | 1805 | v850_elf_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
1806 | { |
1807 | BFD_ASSERT (!elf_flags_init (abfd) | |
1808 | || elf_elfheader (abfd)->e_flags == flags); | |
1809 | ||
1810 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1811 | elf_flags_init (abfd) = TRUE; |
1812 | return TRUE; | |
252b5132 RH |
1813 | } |
1814 | ||
e12dd2ea NC |
1815 | /* Merge backend specific data from an object file |
1816 | to the output object file when linking. */ | |
47b0e7ad | 1817 | |
b34976b6 | 1818 | static bfd_boolean |
47b0e7ad | 1819 | v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
1820 | { |
1821 | flagword out_flags; | |
1822 | flagword in_flags; | |
1823 | ||
1824 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1825 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1826 | return TRUE; |
252b5132 RH |
1827 | |
1828 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1829 | out_flags = elf_elfheader (obfd)->e_flags; | |
1830 | ||
1831 | if (! elf_flags_init (obfd)) | |
1832 | { | |
1833 | /* If the input is the default architecture then do not | |
1834 | bother setting the flags for the output architecture, | |
1835 | instead allow future merges to do this. If no future | |
1836 | merges ever set these flags then they will retain their | |
1837 | unitialised values, which surprise surprise, correspond | |
1838 | to the default values. */ | |
1839 | if (bfd_get_arch_info (ibfd)->the_default) | |
b34976b6 | 1840 | return TRUE; |
435b1e90 | 1841 | |
b34976b6 | 1842 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
1843 | elf_elfheader (obfd)->e_flags = in_flags; |
1844 | ||
1845 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1846 | && bfd_get_arch_info (obfd)->the_default) | |
e12dd2ea | 1847 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); |
252b5132 | 1848 | |
b34976b6 | 1849 | return TRUE; |
252b5132 RH |
1850 | } |
1851 | ||
1852 | /* Check flag compatibility. */ | |
1853 | if (in_flags == out_flags) | |
b34976b6 | 1854 | return TRUE; |
252b5132 RH |
1855 | |
1856 | if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH) | |
1857 | && (in_flags & EF_V850_ARCH) != E_V850_ARCH) | |
8ad30312 NC |
1858 | { |
1859 | /* Allow v850e1 binaries to be linked with v850e binaries. | |
1860 | Set the output binary to v850e. */ | |
1861 | if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH | |
1862 | && (out_flags & EF_V850_ARCH) == E_V850E_ARCH) | |
1863 | return TRUE; | |
1864 | ||
1865 | if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH | |
1866 | && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH) | |
1867 | { | |
1868 | elf_elfheader (obfd)->e_flags = | |
1869 | ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH); | |
1870 | return TRUE; | |
1871 | } | |
1872 | ||
d003868e AM |
1873 | _bfd_error_handler (_("%B: Architecture mismatch with previous modules"), |
1874 | ibfd); | |
8ad30312 | 1875 | } |
252b5132 | 1876 | |
b34976b6 | 1877 | return TRUE; |
252b5132 | 1878 | } |
e12dd2ea NC |
1879 | |
1880 | /* Display the flags field. */ | |
252b5132 | 1881 | |
b34976b6 | 1882 | static bfd_boolean |
47b0e7ad | 1883 | v850_elf_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 RH |
1884 | { |
1885 | FILE * file = (FILE *) ptr; | |
435b1e90 | 1886 | |
252b5132 | 1887 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
435b1e90 | 1888 | |
252b5132 | 1889 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
435b1e90 | 1890 | |
252b5132 RH |
1891 | /* xgettext:c-format */ |
1892 | fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags); | |
435b1e90 | 1893 | |
252b5132 RH |
1894 | switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) |
1895 | { | |
1896 | default: | |
1897 | case E_V850_ARCH: fprintf (file, _("v850 architecture")); break; | |
47b0e7ad | 1898 | case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break; |
8ad30312 | 1899 | case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break; |
252b5132 | 1900 | } |
435b1e90 | 1901 | |
252b5132 | 1902 | fputc ('\n', file); |
435b1e90 | 1903 | |
b34976b6 | 1904 | return TRUE; |
252b5132 RH |
1905 | } |
1906 | ||
1907 | /* V850 ELF uses four common sections. One is the usual one, and the | |
1908 | others are for (small) objects in one of the special data areas: | |
1909 | small, tiny and zero. All the objects are kept together, and then | |
1910 | referenced via the gp register, the ep register or the r0 register | |
1911 | respectively, which yields smaller, faster assembler code. This | |
1912 | approach is copied from elf32-mips.c. */ | |
1913 | ||
1914 | static asection v850_elf_scom_section; | |
1915 | static asymbol v850_elf_scom_symbol; | |
1916 | static asymbol * v850_elf_scom_symbol_ptr; | |
1917 | static asection v850_elf_tcom_section; | |
1918 | static asymbol v850_elf_tcom_symbol; | |
1919 | static asymbol * v850_elf_tcom_symbol_ptr; | |
1920 | static asection v850_elf_zcom_section; | |
1921 | static asymbol v850_elf_zcom_symbol; | |
1922 | static asymbol * v850_elf_zcom_symbol_ptr; | |
1923 | ||
e12dd2ea NC |
1924 | /* Given a BFD section, try to locate the |
1925 | corresponding ELF section index. */ | |
252b5132 | 1926 | |
b34976b6 | 1927 | static bfd_boolean |
47b0e7ad NC |
1928 | v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
1929 | asection *sec, | |
1930 | int *retval) | |
252b5132 RH |
1931 | { |
1932 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
1933 | *retval = SHN_V850_SCOMMON; | |
1934 | else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0) | |
1935 | *retval = SHN_V850_TCOMMON; | |
1936 | else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0) | |
1937 | *retval = SHN_V850_ZCOMMON; | |
1938 | else | |
b34976b6 | 1939 | return FALSE; |
435b1e90 | 1940 | |
b34976b6 | 1941 | return TRUE; |
252b5132 RH |
1942 | } |
1943 | ||
1944 | /* Handle the special V850 section numbers that a symbol may use. */ | |
1945 | ||
1946 | static void | |
47b0e7ad | 1947 | v850_elf_symbol_processing (bfd *abfd, asymbol *asym) |
252b5132 RH |
1948 | { |
1949 | elf_symbol_type * elfsym = (elf_symbol_type *) asym; | |
9ad5cbcf | 1950 | unsigned int indx; |
435b1e90 | 1951 | |
9ad5cbcf | 1952 | indx = elfsym->internal_elf_sym.st_shndx; |
252b5132 RH |
1953 | |
1954 | /* If the section index is an "ordinary" index, then it may | |
1955 | refer to a v850 specific section created by the assembler. | |
1956 | Check the section's type and change the index it matches. | |
435b1e90 | 1957 | |
252b5132 | 1958 | FIXME: Should we alter the st_shndx field as well ? */ |
435b1e90 | 1959 | |
9ad5cbcf AM |
1960 | if (indx < elf_numsections (abfd)) |
1961 | switch (elf_elfsections(abfd)[indx]->sh_type) | |
252b5132 RH |
1962 | { |
1963 | case SHT_V850_SCOMMON: | |
9ad5cbcf | 1964 | indx = SHN_V850_SCOMMON; |
252b5132 | 1965 | break; |
435b1e90 | 1966 | |
252b5132 | 1967 | case SHT_V850_TCOMMON: |
9ad5cbcf | 1968 | indx = SHN_V850_TCOMMON; |
252b5132 | 1969 | break; |
435b1e90 | 1970 | |
252b5132 | 1971 | case SHT_V850_ZCOMMON: |
9ad5cbcf | 1972 | indx = SHN_V850_ZCOMMON; |
252b5132 | 1973 | break; |
435b1e90 | 1974 | |
252b5132 RH |
1975 | default: |
1976 | break; | |
1977 | } | |
435b1e90 | 1978 | |
9ad5cbcf | 1979 | switch (indx) |
252b5132 RH |
1980 | { |
1981 | case SHN_V850_SCOMMON: | |
1982 | if (v850_elf_scom_section.name == NULL) | |
1983 | { | |
1984 | /* Initialize the small common section. */ | |
1985 | v850_elf_scom_section.name = ".scommon"; | |
1986 | v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA; | |
1987 | v850_elf_scom_section.output_section = & v850_elf_scom_section; | |
1988 | v850_elf_scom_section.symbol = & v850_elf_scom_symbol; | |
1989 | v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr; | |
1990 | v850_elf_scom_symbol.name = ".scommon"; | |
1991 | v850_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
1992 | v850_elf_scom_symbol.section = & v850_elf_scom_section; | |
1993 | v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol; | |
1994 | } | |
1995 | asym->section = & v850_elf_scom_section; | |
1996 | asym->value = elfsym->internal_elf_sym.st_size; | |
1997 | break; | |
435b1e90 | 1998 | |
252b5132 RH |
1999 | case SHN_V850_TCOMMON: |
2000 | if (v850_elf_tcom_section.name == NULL) | |
2001 | { | |
2002 | /* Initialize the tcommon section. */ | |
2003 | v850_elf_tcom_section.name = ".tcommon"; | |
2004 | v850_elf_tcom_section.flags = SEC_IS_COMMON; | |
2005 | v850_elf_tcom_section.output_section = & v850_elf_tcom_section; | |
2006 | v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol; | |
2007 | v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr; | |
2008 | v850_elf_tcom_symbol.name = ".tcommon"; | |
2009 | v850_elf_tcom_symbol.flags = BSF_SECTION_SYM; | |
2010 | v850_elf_tcom_symbol.section = & v850_elf_tcom_section; | |
2011 | v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol; | |
2012 | } | |
2013 | asym->section = & v850_elf_tcom_section; | |
2014 | asym->value = elfsym->internal_elf_sym.st_size; | |
2015 | break; | |
2016 | ||
2017 | case SHN_V850_ZCOMMON: | |
2018 | if (v850_elf_zcom_section.name == NULL) | |
2019 | { | |
2020 | /* Initialize the zcommon section. */ | |
2021 | v850_elf_zcom_section.name = ".zcommon"; | |
2022 | v850_elf_zcom_section.flags = SEC_IS_COMMON; | |
2023 | v850_elf_zcom_section.output_section = & v850_elf_zcom_section; | |
2024 | v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol; | |
2025 | v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr; | |
2026 | v850_elf_zcom_symbol.name = ".zcommon"; | |
2027 | v850_elf_zcom_symbol.flags = BSF_SECTION_SYM; | |
2028 | v850_elf_zcom_symbol.section = & v850_elf_zcom_section; | |
2029 | v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol; | |
2030 | } | |
2031 | asym->section = & v850_elf_zcom_section; | |
2032 | asym->value = elfsym->internal_elf_sym.st_size; | |
2033 | break; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | /* Hook called by the linker routine which adds symbols from an object | |
2038 | file. We must handle the special v850 section numbers here. */ | |
2039 | ||
b34976b6 | 2040 | static bfd_boolean |
47b0e7ad NC |
2041 | v850_elf_add_symbol_hook (bfd *abfd, |
2042 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2043 | Elf_Internal_Sym *sym, | |
2044 | const char **namep ATTRIBUTE_UNUSED, | |
2045 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2046 | asection **secp, | |
2047 | bfd_vma *valp) | |
252b5132 | 2048 | { |
9ad5cbcf | 2049 | unsigned int indx = sym->st_shndx; |
435b1e90 | 2050 | |
252b5132 RH |
2051 | /* If the section index is an "ordinary" index, then it may |
2052 | refer to a v850 specific section created by the assembler. | |
2053 | Check the section's type and change the index it matches. | |
435b1e90 | 2054 | |
252b5132 | 2055 | FIXME: Should we alter the st_shndx field as well ? */ |
435b1e90 | 2056 | |
9ad5cbcf AM |
2057 | if (indx < elf_numsections (abfd)) |
2058 | switch (elf_elfsections(abfd)[indx]->sh_type) | |
252b5132 RH |
2059 | { |
2060 | case SHT_V850_SCOMMON: | |
9ad5cbcf | 2061 | indx = SHN_V850_SCOMMON; |
252b5132 | 2062 | break; |
435b1e90 | 2063 | |
252b5132 | 2064 | case SHT_V850_TCOMMON: |
9ad5cbcf | 2065 | indx = SHN_V850_TCOMMON; |
252b5132 | 2066 | break; |
435b1e90 | 2067 | |
252b5132 | 2068 | case SHT_V850_ZCOMMON: |
9ad5cbcf | 2069 | indx = SHN_V850_ZCOMMON; |
252b5132 | 2070 | break; |
435b1e90 | 2071 | |
252b5132 RH |
2072 | default: |
2073 | break; | |
2074 | } | |
435b1e90 | 2075 | |
9ad5cbcf | 2076 | switch (indx) |
252b5132 RH |
2077 | { |
2078 | case SHN_V850_SCOMMON: | |
2079 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
2080 | (*secp)->flags |= SEC_IS_COMMON; | |
2081 | *valp = sym->st_size; | |
2082 | break; | |
435b1e90 | 2083 | |
252b5132 RH |
2084 | case SHN_V850_TCOMMON: |
2085 | *secp = bfd_make_section_old_way (abfd, ".tcommon"); | |
2086 | (*secp)->flags |= SEC_IS_COMMON; | |
2087 | *valp = sym->st_size; | |
2088 | break; | |
435b1e90 | 2089 | |
252b5132 RH |
2090 | case SHN_V850_ZCOMMON: |
2091 | *secp = bfd_make_section_old_way (abfd, ".zcommon"); | |
2092 | (*secp)->flags |= SEC_IS_COMMON; | |
2093 | *valp = sym->st_size; | |
2094 | break; | |
2095 | } | |
2096 | ||
b34976b6 | 2097 | return TRUE; |
252b5132 RH |
2098 | } |
2099 | ||
b34976b6 | 2100 | static bfd_boolean |
47b0e7ad NC |
2101 | v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2102 | const char *name ATTRIBUTE_UNUSED, | |
2103 | Elf_Internal_Sym *sym, | |
2104 | asection *input_sec, | |
3dd2d30b | 2105 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
252b5132 RH |
2106 | { |
2107 | /* If we see a common symbol, which implies a relocatable link, then | |
2108 | if a symbol was in a special common section in an input file, mark | |
2109 | it as a special common in the output file. */ | |
435b1e90 | 2110 | |
252b5132 RH |
2111 | if (sym->st_shndx == SHN_COMMON) |
2112 | { | |
2113 | if (strcmp (input_sec->name, ".scommon") == 0) | |
2114 | sym->st_shndx = SHN_V850_SCOMMON; | |
2115 | else if (strcmp (input_sec->name, ".tcommon") == 0) | |
2116 | sym->st_shndx = SHN_V850_TCOMMON; | |
2117 | else if (strcmp (input_sec->name, ".zcommon") == 0) | |
2118 | sym->st_shndx = SHN_V850_ZCOMMON; | |
2119 | } | |
2120 | ||
d4c87fc1 AM |
2121 | /* The price we pay for using h->other unused bits as flags in the |
2122 | linker is cleaning up after ourselves. */ | |
3dd2d30b AM |
2123 | |
2124 | sym->st_other &= ~(V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA | |
2125 | | V850_OTHER_ERROR); | |
d4c87fc1 | 2126 | |
b34976b6 | 2127 | return TRUE; |
252b5132 RH |
2128 | } |
2129 | ||
b34976b6 | 2130 | static bfd_boolean |
6dc132d9 L |
2131 | v850_elf_section_from_shdr (bfd *abfd, |
2132 | Elf_Internal_Shdr *hdr, | |
2133 | const char *name, | |
2134 | int shindex) | |
252b5132 RH |
2135 | { |
2136 | /* There ought to be a place to keep ELF backend specific flags, but | |
2137 | at the moment there isn't one. We just keep track of the | |
2138 | sections by their name, instead. */ | |
2139 | ||
6dc132d9 | 2140 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2141 | return FALSE; |
252b5132 RH |
2142 | |
2143 | switch (hdr->sh_type) | |
2144 | { | |
2145 | case SHT_V850_SCOMMON: | |
2146 | case SHT_V850_TCOMMON: | |
2147 | case SHT_V850_ZCOMMON: | |
2148 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
2149 | (bfd_get_section_flags (abfd, | |
2150 | hdr->bfd_section) | |
2151 | | SEC_IS_COMMON))) | |
b34976b6 | 2152 | return FALSE; |
252b5132 RH |
2153 | } |
2154 | ||
b34976b6 | 2155 | return TRUE; |
252b5132 RH |
2156 | } |
2157 | ||
e12dd2ea NC |
2158 | /* Set the correct type for a V850 ELF section. We do this |
2159 | by the section name, which is a hack, but ought to work. */ | |
2160 | ||
b34976b6 | 2161 | static bfd_boolean |
47b0e7ad NC |
2162 | v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2163 | Elf_Internal_Shdr *hdr, | |
2164 | asection *sec) | |
252b5132 | 2165 | { |
47b0e7ad | 2166 | const char * name; |
252b5132 RH |
2167 | |
2168 | name = bfd_get_section_name (abfd, sec); | |
2169 | ||
2170 | if (strcmp (name, ".scommon") == 0) | |
47b0e7ad | 2171 | hdr->sh_type = SHT_V850_SCOMMON; |
252b5132 | 2172 | else if (strcmp (name, ".tcommon") == 0) |
47b0e7ad | 2173 | hdr->sh_type = SHT_V850_TCOMMON; |
252b5132 RH |
2174 | else if (strcmp (name, ".zcommon") == 0) |
2175 | hdr->sh_type = SHT_V850_ZCOMMON; | |
435b1e90 | 2176 | |
b34976b6 | 2177 | return TRUE; |
252b5132 | 2178 | } |
86aba9db NC |
2179 | |
2180 | /* Delete some bytes from a section while relaxing. */ | |
2181 | ||
b34976b6 | 2182 | static bfd_boolean |
47b0e7ad NC |
2183 | v850_elf_relax_delete_bytes (bfd *abfd, |
2184 | asection *sec, | |
2185 | bfd_vma addr, | |
2186 | bfd_vma toaddr, | |
2187 | int count) | |
86aba9db | 2188 | { |
b34976b6 AM |
2189 | Elf_Internal_Shdr *symtab_hdr; |
2190 | Elf32_External_Sym *extsyms; | |
2191 | Elf32_External_Sym *esym; | |
2192 | Elf32_External_Sym *esymend; | |
2193 | int index; | |
2194 | unsigned int sec_shndx; | |
2195 | bfd_byte *contents; | |
2196 | Elf_Internal_Rela *irel; | |
2197 | Elf_Internal_Rela *irelend; | |
2198 | struct elf_link_hash_entry *sym_hash; | |
2199 | Elf_Internal_Shdr *shndx_hdr; | |
2200 | Elf_External_Sym_Shndx *shndx; | |
86aba9db NC |
2201 | |
2202 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2203 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
2204 | ||
2205 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
2206 | ||
2207 | contents = elf_section_data (sec)->this_hdr.contents; | |
2208 | ||
2209 | /* The deletion must stop at the next ALIGN reloc for an alignment | |
2210 | power larger than the number of bytes we are deleting. */ | |
2211 | ||
2212 | /* Actually delete the bytes. */ | |
2213 | #if (DEBUG_RELAX & 2) | |
2214 | fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n", | |
2215 | sec->name, addr, toaddr, count ); | |
2216 | #endif | |
2217 | memmove (contents + addr, contents + addr + count, | |
2218 | toaddr - addr - count); | |
2219 | memset (contents + toaddr-count, 0, count); | |
2220 | ||
2221 | /* Adjust all the relocs. */ | |
2222 | irel = elf_section_data (sec)->relocs; | |
2223 | irelend = irel + sec->reloc_count; | |
2224 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
2225 | shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents; | |
2226 | ||
2227 | for (; irel < irelend; irel++) | |
2228 | { | |
2229 | bfd_vma raddr, paddr, symval; | |
2230 | Elf_Internal_Sym isym; | |
2231 | ||
2232 | /* Get the new reloc address. */ | |
2233 | raddr = irel->r_offset; | |
2234 | if ((raddr >= (addr + count) && raddr < toaddr)) | |
b34976b6 | 2235 | irel->r_offset -= count; |
86aba9db NC |
2236 | |
2237 | if (raddr >= addr && raddr < addr + count) | |
2238 | { | |
2239 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2240 | (int) R_V850_NONE); | |
2241 | continue; | |
2242 | } | |
b34976b6 | 2243 | |
86aba9db NC |
2244 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN) |
2245 | continue; | |
2246 | ||
2247 | bfd_elf32_swap_symbol_in (abfd, | |
2248 | extsyms + ELF32_R_SYM (irel->r_info), | |
2249 | shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL, | |
2250 | & isym); | |
b34976b6 | 2251 | |
86aba9db NC |
2252 | if (isym.st_shndx != sec_shndx) |
2253 | continue; | |
2254 | ||
2255 | /* Get the value of the symbol referred to by the reloc. */ | |
2256 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2257 | { | |
2258 | symval = isym.st_value; | |
2259 | #if (DEBUG_RELAX & 2) | |
2260 | { | |
2261 | char * name = bfd_elf_string_from_elf_section | |
2262 | (abfd, symtab_hdr->sh_link, isym.st_name); | |
2263 | fprintf (stderr, | |
2264 | "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", | |
2265 | sec->name, name, isym.st_name, | |
2266 | sec->output_section->vma, sec->output_offset, | |
2267 | isym.st_value, irel->r_addend); | |
2268 | } | |
2269 | #endif | |
2270 | } | |
2271 | else | |
2272 | { | |
2273 | unsigned long indx; | |
2274 | struct elf_link_hash_entry * h; | |
2275 | ||
2276 | /* An external symbol. */ | |
2277 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2278 | ||
2279 | h = elf_sym_hashes (abfd) [indx]; | |
2280 | BFD_ASSERT (h != NULL); | |
2281 | ||
2282 | symval = h->root.u.def.value; | |
2283 | #if (DEBUG_RELAX & 2) | |
2284 | fprintf (stderr, | |
2285 | "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n", | |
2286 | sec->name, h->root.root.string, h->root.u.def.value, | |
2287 | sec->output_section->vma, sec->output_offset, irel->r_addend); | |
2288 | #endif | |
2289 | } | |
b34976b6 | 2290 | |
86aba9db | 2291 | paddr = symval + irel->r_addend; |
b34976b6 | 2292 | |
86aba9db NC |
2293 | if ( (symval >= addr + count && symval < toaddr) |
2294 | && (paddr < addr + count || paddr >= toaddr)) | |
2295 | irel->r_addend += count; | |
2296 | else if ( (symval < addr + count || symval >= toaddr) | |
2297 | && (paddr >= addr + count && paddr < toaddr)) | |
2298 | irel->r_addend -= count; | |
2299 | } | |
2300 | ||
2301 | /* Adjust the local symbols defined in this section. */ | |
2302 | esym = extsyms; | |
2303 | esymend = esym + symtab_hdr->sh_info; | |
2304 | ||
2305 | for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL)) | |
2306 | { | |
2307 | Elf_Internal_Sym isym; | |
2308 | ||
2309 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym); | |
2310 | ||
2311 | if (isym.st_shndx == sec_shndx | |
2312 | && isym.st_value >= addr + count | |
2313 | && isym.st_value < toaddr) | |
2314 | { | |
2315 | isym.st_value -= count; | |
2316 | ||
2317 | if (isym.st_value + isym.st_size >= toaddr) | |
b34976b6 AM |
2318 | isym.st_size += count; |
2319 | ||
63a23799 | 2320 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2321 | } |
2322 | else if (isym.st_shndx == sec_shndx | |
2323 | && isym.st_value < addr + count) | |
2324 | { | |
2325 | if (isym.st_value+isym.st_size >= addr + count | |
2326 | && isym.st_value+isym.st_size < toaddr) | |
2327 | isym.st_size -= count; | |
2328 | ||
2329 | if (isym.st_value >= addr | |
2330 | && isym.st_value < addr + count) | |
2331 | isym.st_value = addr; | |
2332 | ||
63a23799 | 2333 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2334 | } |
2335 | } | |
2336 | ||
2337 | /* Now adjust the global symbols defined in this section. */ | |
2338 | esym = extsyms + symtab_hdr->sh_info; | |
2339 | esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); | |
2340 | ||
2341 | for (index = 0; esym < esymend; esym ++, index ++) | |
2342 | { | |
2343 | Elf_Internal_Sym isym; | |
2344 | ||
2345 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym); | |
2346 | sym_hash = elf_sym_hashes (abfd) [index]; | |
2347 | ||
2348 | if (isym.st_shndx == sec_shndx | |
2349 | && ((sym_hash)->root.type == bfd_link_hash_defined | |
2350 | || (sym_hash)->root.type == bfd_link_hash_defweak) | |
2351 | && (sym_hash)->root.u.def.section == sec | |
2352 | && (sym_hash)->root.u.def.value >= addr + count | |
2353 | && (sym_hash)->root.u.def.value < toaddr) | |
2354 | { | |
2355 | if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr) | |
2356 | { | |
2357 | isym.st_size += count; | |
63a23799 | 2358 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2359 | } |
2360 | ||
2361 | (sym_hash)->root.u.def.value -= count; | |
2362 | } | |
2363 | else if (isym.st_shndx == sec_shndx | |
2364 | && ((sym_hash)->root.type == bfd_link_hash_defined | |
2365 | || (sym_hash)->root.type == bfd_link_hash_defweak) | |
2366 | && (sym_hash)->root.u.def.section == sec | |
2367 | && (sym_hash)->root.u.def.value < addr + count) | |
2368 | { | |
2369 | if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count | |
2370 | && (sym_hash)->root.u.def.value+isym.st_size < toaddr) | |
2371 | isym.st_size -= count; | |
2372 | ||
2373 | if ((sym_hash)->root.u.def.value >= addr | |
2374 | && (sym_hash)->root.u.def.value < addr + count) | |
2375 | (sym_hash)->root.u.def.value = addr; | |
2376 | ||
63a23799 | 2377 | bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); |
86aba9db NC |
2378 | } |
2379 | ||
2380 | if (shndx) | |
2381 | ++ shndx; | |
2382 | } | |
2383 | ||
b34976b6 | 2384 | return TRUE; |
86aba9db NC |
2385 | } |
2386 | ||
2387 | #define NOP_OPCODE (0x0000) | |
b34976b6 | 2388 | #define MOVHI 0x0640 /* 4byte */ |
86aba9db | 2389 | #define MOVHI_MASK 0x07e0 |
b34976b6 | 2390 | #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */ |
86aba9db NC |
2391 | #define MOVHI_R2(insn) ((insn) >> 11) |
2392 | #define MOVEA 0x0620 /* 2byte */ | |
2393 | #define MOVEA_MASK 0x07e0 | |
2394 | #define MOVEA_R1(insn) ((insn) & 0x1f) | |
2395 | #define MOVEA_R2(insn) ((insn) >> 11) | |
2396 | #define JARL_4 0x00040780 /* 4byte */ | |
2397 | #define JARL_4_MASK 0xFFFF07FF | |
2398 | #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11) | |
2399 | #define ADD_I 0x0240 /* 2byte */ | |
2400 | #define ADD_I_MASK 0x07e0 | |
2401 | #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */ | |
2402 | #define ADD_R2(insn) ((insn) >> 11) | |
2403 | #define JMP_R 0x0060 /* 2byte */ | |
2404 | #define JMP_R_MASK 0xFFE0 | |
2405 | #define JMP_R1(insn) ((insn) & 0x1f) | |
2406 | ||
b34976b6 | 2407 | static bfd_boolean |
47b0e7ad NC |
2408 | v850_elf_relax_section (bfd *abfd, |
2409 | asection *sec, | |
2410 | struct bfd_link_info *link_info, | |
2411 | bfd_boolean *again) | |
86aba9db | 2412 | { |
b34976b6 AM |
2413 | Elf_Internal_Shdr *symtab_hdr; |
2414 | Elf_Internal_Rela *internal_relocs; | |
2415 | Elf_Internal_Rela *irel; | |
2416 | Elf_Internal_Rela *irelend; | |
2417 | Elf_Internal_Rela *irelalign = NULL; | |
2418 | Elf_Internal_Sym *isymbuf = NULL; | |
2419 | bfd_byte *contents = NULL; | |
2420 | bfd_vma addr = 0; | |
2421 | bfd_vma toaddr; | |
2422 | int align_pad_size = 0; | |
2423 | bfd_boolean result = TRUE; | |
2424 | ||
2425 | *again = FALSE; | |
86aba9db | 2426 | |
1049f94e | 2427 | if (link_info->relocatable |
86aba9db NC |
2428 | || (sec->flags & SEC_RELOC) == 0 |
2429 | || sec->reloc_count == 0) | |
b34976b6 | 2430 | return TRUE; |
86aba9db | 2431 | |
86aba9db NC |
2432 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; |
2433 | ||
45d6a902 | 2434 | internal_relocs = (_bfd_elf_link_read_relocs |
47b0e7ad | 2435 | (abfd, sec, NULL, NULL, link_info->keep_memory)); |
86aba9db NC |
2436 | if (internal_relocs == NULL) |
2437 | goto error_return; | |
86aba9db NC |
2438 | |
2439 | irelend = internal_relocs + sec->reloc_count; | |
b34976b6 | 2440 | |
eea6121a | 2441 | while (addr < sec->size) |
86aba9db | 2442 | { |
eea6121a | 2443 | toaddr = sec->size; |
86aba9db NC |
2444 | |
2445 | for (irel = internal_relocs; irel < irelend; irel ++) | |
2446 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN | |
2447 | && irel->r_offset > addr | |
2448 | && irel->r_offset < toaddr) | |
2449 | toaddr = irel->r_offset; | |
b34976b6 | 2450 | |
86aba9db NC |
2451 | #ifdef DEBUG_RELAX |
2452 | fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n", | |
2453 | addr, toaddr, align_pad_size); | |
2454 | #endif | |
2455 | if (irelalign) | |
2456 | { | |
2457 | bfd_vma alignto; | |
2458 | bfd_vma alignmoveto; | |
2459 | ||
2460 | alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend); | |
2461 | alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend); | |
2462 | ||
2463 | if (alignmoveto < alignto) | |
2464 | { | |
2465 | unsigned int i; | |
2466 | ||
2467 | align_pad_size = alignto - alignmoveto; | |
2468 | #ifdef DEBUG_RELAX | |
2469 | fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n", | |
2470 | alignmoveto, toaddr, align_pad_size); | |
2471 | #endif | |
2472 | if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto, | |
2473 | toaddr, align_pad_size)) | |
b34976b6 | 2474 | goto error_return; |
86aba9db NC |
2475 | |
2476 | for (i = BFD_ALIGN (toaddr - align_pad_size, 1); | |
2477 | (i + 1) < toaddr; i += 2) | |
2478 | bfd_put_16 (abfd, NOP_OPCODE, contents + i); | |
2479 | ||
2480 | addr = alignmoveto; | |
2481 | } | |
2482 | else | |
2483 | align_pad_size = 0; | |
2484 | } | |
2485 | ||
2486 | for (irel = internal_relocs; irel < irelend; irel++) | |
2487 | { | |
b34976b6 AM |
2488 | bfd_vma laddr; |
2489 | bfd_vma addend; | |
2490 | bfd_vma symval; | |
2491 | int insn[5]; | |
2492 | int no_match = -1; | |
2493 | Elf_Internal_Rela *hi_irelfn; | |
2494 | Elf_Internal_Rela *lo_irelfn; | |
2495 | Elf_Internal_Rela *irelcall; | |
2496 | bfd_signed_vma foff; | |
86aba9db NC |
2497 | |
2498 | if (! (irel->r_offset >= addr && irel->r_offset < toaddr | |
2499 | && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL | |
2500 | || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP))) | |
2501 | continue; | |
2502 | ||
2503 | #ifdef DEBUG_RELAX | |
2504 | fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n", | |
2505 | irel->r_info, | |
2506 | irel->r_offset, | |
2507 | irel->r_addend ); | |
2508 | #endif | |
2509 | ||
2510 | /* Get the section contents. */ | |
2511 | if (contents == NULL) | |
2512 | { | |
2513 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2514 | contents = elf_section_data (sec)->this_hdr.contents; | |
2515 | else | |
2516 | { | |
47b0e7ad | 2517 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
86aba9db NC |
2518 | goto error_return; |
2519 | } | |
2520 | } | |
2521 | ||
5cec6941 NC |
2522 | /* Read this BFD's local symbols if we haven't done so already. */ |
2523 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
86aba9db | 2524 | { |
5cec6941 NC |
2525 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2526 | if (isymbuf == NULL) | |
2527 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2528 | symtab_hdr->sh_info, 0, | |
2529 | NULL, NULL, NULL); | |
2530 | if (isymbuf == NULL) | |
2531 | goto error_return; | |
86aba9db NC |
2532 | } |
2533 | ||
2534 | laddr = irel->r_offset; | |
2535 | ||
2536 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL) | |
2537 | { | |
2538 | /* Check code for -mlong-calls output. */ | |
eea6121a | 2539 | if (laddr + 16 <= (bfd_vma) sec->size) |
86aba9db NC |
2540 | { |
2541 | insn[0] = bfd_get_16 (abfd, contents + laddr); | |
2542 | insn[1] = bfd_get_16 (abfd, contents + laddr + 4); | |
2543 | insn[2] = bfd_get_32 (abfd, contents + laddr + 8); | |
2544 | insn[3] = bfd_get_16 (abfd, contents + laddr + 12); | |
2545 | insn[4] = bfd_get_16 (abfd, contents + laddr + 14); | |
b34976b6 | 2546 | |
86aba9db NC |
2547 | if ((insn[0] & MOVHI_MASK) != MOVHI |
2548 | || MOVHI_R1 (insn[0]) != 0) | |
2549 | no_match = 0; | |
2550 | ||
2551 | if (no_match < 0 | |
2552 | && ((insn[1] & MOVEA_MASK) != MOVEA | |
2553 | || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1]))) | |
2554 | no_match = 1; | |
2555 | ||
2556 | if (no_match < 0 | |
2557 | && (insn[2] & JARL_4_MASK) != JARL_4) | |
2558 | no_match = 2; | |
2559 | ||
2560 | if (no_match < 0 | |
2561 | && ((insn[3] & ADD_I_MASK) != ADD_I | |
2562 | || ADD_I5 (insn[3]) != 4 | |
2563 | || JARL_R2 (insn[2]) != ADD_R2 (insn[3]))) | |
2564 | no_match = 3; | |
2565 | ||
2566 | if (no_match < 0 | |
2567 | && ((insn[4] & JMP_R_MASK) != JMP_R | |
2568 | || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4]))) | |
2569 | no_match = 4; | |
2570 | } | |
2571 | else | |
2572 | { | |
2573 | ((*_bfd_error_handler) | |
2574 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns", | |
2575 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
2576 | ||
2577 | continue; | |
2578 | } | |
2579 | ||
2580 | if (no_match >= 0) | |
2581 | { | |
2582 | ((*_bfd_error_handler) | |
2583 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x", | |
2584 | bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match])); | |
2585 | ||
2586 | continue; | |
b34976b6 | 2587 | } |
86aba9db NC |
2588 | |
2589 | /* Get the reloc for the address from which the register is | |
2590 | being loaded. This reloc will tell us which function is | |
2591 | actually being called. */ | |
2592 | for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++) | |
2593 | if (hi_irelfn->r_offset == laddr + 2 | |
b34976b6 | 2594 | && ELF32_R_TYPE (hi_irelfn->r_info) |
86aba9db NC |
2595 | == (int) R_V850_HI16_S) |
2596 | break; | |
2597 | ||
2598 | for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++) | |
2599 | if (lo_irelfn->r_offset == laddr + 6 | |
2600 | && ELF32_R_TYPE (lo_irelfn->r_info) | |
2601 | == (int) R_V850_LO16) | |
2602 | break; | |
2603 | ||
2604 | for (irelcall = internal_relocs; irelcall < irelend; irelcall ++) | |
2605 | if (irelcall->r_offset == laddr + 8 | |
2606 | && ELF32_R_TYPE (irelcall->r_info) | |
2607 | == (int) R_V850_22_PCREL) | |
2608 | break; | |
2609 | ||
2610 | if ( hi_irelfn == irelend | |
2611 | || lo_irelfn == irelend | |
2612 | || irelcall == irelend) | |
2613 | { | |
2614 | ((*_bfd_error_handler) | |
2615 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc", | |
2616 | bfd_get_filename (abfd), (unsigned long) irel->r_offset )); | |
2617 | ||
2618 | continue; | |
2619 | } | |
b34976b6 | 2620 | |
86aba9db NC |
2621 | if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info) |
2622 | { | |
5cec6941 | 2623 | Elf_Internal_Sym * isym; |
86aba9db NC |
2624 | |
2625 | /* A local symbol. */ | |
5cec6941 | 2626 | isym = isymbuf + ELF32_R_SYM (irelcall->r_info); |
86aba9db | 2627 | |
5cec6941 | 2628 | symval = isym->st_value; |
86aba9db NC |
2629 | } |
2630 | else | |
2631 | { | |
2632 | unsigned long indx; | |
2633 | struct elf_link_hash_entry * h; | |
2634 | ||
2635 | /* An external symbol. */ | |
2636 | indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info; | |
2637 | h = elf_sym_hashes (abfd)[indx]; | |
2638 | BFD_ASSERT (h != NULL); | |
2639 | ||
2640 | if ( h->root.type != bfd_link_hash_defined | |
2641 | && h->root.type != bfd_link_hash_defweak) | |
2642 | /* This appears to be a reference to an undefined | |
2643 | symbol. Just ignore it--it will be caught by the | |
2644 | regular reloc processing. */ | |
2645 | continue; | |
2646 | ||
2647 | symval = h->root.u.def.value; | |
2648 | } | |
2649 | ||
2650 | if (symval + irelcall->r_addend != irelcall->r_offset + 4) | |
2651 | { | |
2652 | ((*_bfd_error_handler) | |
2653 | ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx", | |
2654 | bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset )); | |
2655 | ||
2656 | continue; | |
2657 | } | |
2658 | ||
2659 | /* Get the value of the symbol referred to by the reloc. */ | |
2660 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2661 | { | |
b34976b6 AM |
2662 | Elf_Internal_Sym *isym; |
2663 | asection *sym_sec; | |
86aba9db NC |
2664 | |
2665 | /* A local symbol. */ | |
5cec6941 | 2666 | isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info); |
b34976b6 | 2667 | |
5cec6941 | 2668 | if (isym->st_shndx == SHN_UNDEF) |
86aba9db | 2669 | sym_sec = bfd_und_section_ptr; |
5cec6941 | 2670 | else if (isym->st_shndx == SHN_ABS) |
86aba9db | 2671 | sym_sec = bfd_abs_section_ptr; |
5cec6941 | 2672 | else if (isym->st_shndx == SHN_COMMON) |
86aba9db NC |
2673 | sym_sec = bfd_com_section_ptr; |
2674 | else | |
5cec6941 NC |
2675 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2676 | symval = (isym->st_value | |
86aba9db NC |
2677 | + sym_sec->output_section->vma |
2678 | + sym_sec->output_offset); | |
2679 | } | |
2680 | else | |
2681 | { | |
2682 | unsigned long indx; | |
b34976b6 | 2683 | struct elf_link_hash_entry *h; |
86aba9db NC |
2684 | |
2685 | /* An external symbol. */ | |
5cec6941 | 2686 | indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info; |
86aba9db NC |
2687 | h = elf_sym_hashes (abfd)[indx]; |
2688 | BFD_ASSERT (h != NULL); | |
2689 | ||
2690 | if ( h->root.type != bfd_link_hash_defined | |
2691 | && h->root.type != bfd_link_hash_defweak) | |
2692 | /* This appears to be a reference to an undefined | |
2693 | symbol. Just ignore it--it will be caught by the | |
2694 | regular reloc processing. */ | |
2695 | continue; | |
2696 | ||
2697 | symval = (h->root.u.def.value | |
2698 | + h->root.u.def.section->output_section->vma | |
2699 | + h->root.u.def.section->output_offset); | |
2700 | } | |
2701 | ||
2702 | addend = irel->r_addend; | |
2703 | ||
2704 | foff = (symval + addend | |
2705 | - (irel->r_offset | |
2706 | + sec->output_section->vma | |
2707 | + sec->output_offset | |
2708 | + 4)); | |
2709 | #ifdef DEBUG_RELAX | |
2710 | fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n", | |
2711 | irel->r_offset, | |
2712 | (irel->r_offset | |
2713 | + sec->output_section->vma | |
2714 | + sec->output_offset), | |
2715 | symval, addend, foff); | |
2716 | #endif | |
2717 | ||
2718 | if (foff < -0x100000 || foff >= 0x100000) | |
2719 | /* After all that work, we can't shorten this function call. */ | |
2720 | continue; | |
2721 | ||
2722 | /* For simplicity of coding, we are going to modify the section | |
2723 | contents, the section relocs, and the BFD symbol table. We | |
2724 | must tell the rest of the code not to free up this | |
2725 | information. It would be possible to instead create a table | |
2726 | of changes which have to be made, as is done in coff-mips.c; | |
2727 | that would be more work, but would require less memory when | |
2728 | the linker is run. */ | |
2729 | elf_section_data (sec)->relocs = internal_relocs; | |
86aba9db | 2730 | elf_section_data (sec)->this_hdr.contents = contents; |
5cec6941 | 2731 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
b34976b6 | 2732 | |
86aba9db NC |
2733 | /* Replace the long call with a jarl. */ |
2734 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL); | |
2735 | ||
2736 | addend = 0; | |
2737 | ||
2738 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2739 | /* If this needs to be changed because of future relaxing, | |
2740 | it will be handled here like other internal IND12W | |
2741 | relocs. */ | |
2742 | bfd_put_32 (abfd, | |
2743 | 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf), | |
2744 | contents + irel->r_offset); | |
2745 | else | |
2746 | /* We can't fully resolve this yet, because the external | |
2747 | symbol value may be changed by future relaxing. | |
2748 | We let the final link phase handle it. */ | |
2749 | bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11), | |
2750 | contents + irel->r_offset); | |
2751 | ||
b34976b6 | 2752 | hi_irelfn->r_info = |
86aba9db NC |
2753 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); |
2754 | lo_irelfn->r_info = | |
2755 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); | |
2756 | irelcall->r_info = | |
2757 | ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE); | |
2758 | ||
2759 | if (! v850_elf_relax_delete_bytes (abfd, sec, | |
2760 | irel->r_offset + 4, toaddr, 12)) | |
2761 | goto error_return; | |
2762 | ||
2763 | align_pad_size += 12; | |
2764 | } | |
2765 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP) | |
2766 | { | |
2767 | /* Check code for -mlong-jumps output. */ | |
eea6121a | 2768 | if (laddr + 10 <= (bfd_vma) sec->size) |
86aba9db NC |
2769 | { |
2770 | insn[0] = bfd_get_16 (abfd, contents + laddr); | |
2771 | insn[1] = bfd_get_16 (abfd, contents + laddr + 4); | |
2772 | insn[2] = bfd_get_16 (abfd, contents + laddr + 8); | |
2773 | ||
2774 | if ((insn[0] & MOVHI_MASK) != MOVHI | |
2775 | || MOVHI_R1 (insn[0]) != 0) | |
2776 | no_match = 0; | |
2777 | ||
2778 | if (no_match < 0 | |
2779 | && ((insn[1] & MOVEA_MASK) != MOVEA | |
2780 | || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1]))) | |
2781 | no_match = 1; | |
2782 | ||
2783 | if (no_match < 0 | |
2784 | && ((insn[2] & JMP_R_MASK) != JMP_R | |
2785 | || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2]))) | |
2786 | no_match = 4; | |
2787 | } | |
2788 | else | |
2789 | { | |
2790 | ((*_bfd_error_handler) | |
2791 | ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns", | |
2792 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); | |
2793 | ||
2794 | continue; | |
2795 | } | |
2796 | ||
2797 | if (no_match >= 0) | |
2798 | { | |
2799 | ((*_bfd_error_handler) | |
2800 | ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x", | |
2801 | bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match])); | |
2802 | ||
2803 | continue; | |
2804 | } | |
2805 | ||
2806 | /* Get the reloc for the address from which the register is | |
2807 | being loaded. This reloc will tell us which function is | |
2808 | actually being called. */ | |
2809 | for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++) | |
2810 | if (hi_irelfn->r_offset == laddr + 2 | |
b34976b6 | 2811 | && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S) |
86aba9db NC |
2812 | break; |
2813 | ||
2814 | for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++) | |
2815 | if (lo_irelfn->r_offset == laddr + 6 | |
2816 | && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16) | |
2817 | break; | |
2818 | ||
2819 | if ( hi_irelfn == irelend | |
2820 | || lo_irelfn == irelend) | |
2821 | { | |
2822 | ((*_bfd_error_handler) | |
2823 | ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc", | |
2824 | bfd_get_filename (abfd), (unsigned long) irel->r_offset )); | |
2825 | ||
2826 | continue; | |
2827 | } | |
b34976b6 | 2828 | |
86aba9db NC |
2829 | /* Get the value of the symbol referred to by the reloc. */ |
2830 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2831 | { | |
5cec6941 NC |
2832 | Elf_Internal_Sym * isym; |
2833 | asection * sym_sec; | |
86aba9db NC |
2834 | |
2835 | /* A local symbol. */ | |
5cec6941 NC |
2836 | isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info); |
2837 | ||
2838 | if (isym->st_shndx == SHN_UNDEF) | |
86aba9db | 2839 | sym_sec = bfd_und_section_ptr; |
5cec6941 | 2840 | else if (isym->st_shndx == SHN_ABS) |
86aba9db | 2841 | sym_sec = bfd_abs_section_ptr; |
5cec6941 | 2842 | else if (isym->st_shndx == SHN_COMMON) |
86aba9db NC |
2843 | sym_sec = bfd_com_section_ptr; |
2844 | else | |
5cec6941 NC |
2845 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2846 | symval = (isym->st_value | |
86aba9db NC |
2847 | + sym_sec->output_section->vma |
2848 | + sym_sec->output_offset); | |
2849 | #ifdef DEBUG_RELAX | |
2850 | { | |
2851 | char * name = bfd_elf_string_from_elf_section | |
5cec6941 | 2852 | (abfd, symtab_hdr->sh_link, isym->st_name); |
86aba9db NC |
2853 | |
2854 | fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", | |
5cec6941 NC |
2855 | sym_sec->name, name, isym->st_name, |
2856 | sym_sec->output_section->vma, | |
2857 | sym_sec->output_offset, | |
2858 | isym->st_value, irel->r_addend); | |
86aba9db NC |
2859 | } |
2860 | #endif | |
2861 | } | |
2862 | else | |
2863 | { | |
2864 | unsigned long indx; | |
2865 | struct elf_link_hash_entry * h; | |
2866 | ||
2867 | /* An external symbol. */ | |
2868 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2869 | h = elf_sym_hashes (abfd)[indx]; | |
2870 | BFD_ASSERT (h != NULL); | |
2871 | ||
2872 | if ( h->root.type != bfd_link_hash_defined | |
2873 | && h->root.type != bfd_link_hash_defweak) | |
2874 | /* This appears to be a reference to an undefined | |
2875 | symbol. Just ignore it--it will be caught by the | |
2876 | regular reloc processing. */ | |
2877 | continue; | |
2878 | ||
2879 | symval = (h->root.u.def.value | |
2880 | + h->root.u.def.section->output_section->vma | |
2881 | + h->root.u.def.section->output_offset); | |
2882 | #ifdef DEBUG_RELAX | |
2883 | fprintf (stderr, | |
2884 | "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n", | |
2885 | sec->name, h->root.root.string, h->root.u.def.value, | |
2886 | sec->output_section->vma, sec->output_offset, irel->r_addend); | |
2887 | #endif | |
2888 | } | |
2889 | ||
2890 | addend = irel->r_addend; | |
2891 | ||
2892 | foff = (symval + addend | |
2893 | - (irel->r_offset | |
2894 | + sec->output_section->vma | |
2895 | + sec->output_offset | |
2896 | + 4)); | |
2897 | #ifdef DEBUG_RELAX | |
2898 | fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n", | |
2899 | irel->r_offset, | |
2900 | (irel->r_offset | |
2901 | + sec->output_section->vma | |
2902 | + sec->output_offset), | |
2903 | symval, addend, foff); | |
2904 | #endif | |
2905 | if (foff < -0x100000 || foff >= 0x100000) | |
2906 | /* After all that work, we can't shorten this function call. */ | |
2907 | continue; | |
2908 | ||
2909 | /* For simplicity of coding, we are going to modify the section | |
2910 | contents, the section relocs, and the BFD symbol table. We | |
2911 | must tell the rest of the code not to free up this | |
2912 | information. It would be possible to instead create a table | |
2913 | of changes which have to be made, as is done in coff-mips.c; | |
2914 | that would be more work, but would require less memory when | |
2915 | the linker is run. */ | |
2916 | elf_section_data (sec)->relocs = internal_relocs; | |
86aba9db | 2917 | elf_section_data (sec)->this_hdr.contents = contents; |
5cec6941 | 2918 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
86aba9db NC |
2919 | |
2920 | if (foff < -0x100 || foff >= 0x100) | |
2921 | { | |
2922 | /* Replace the long jump with a jr. */ | |
2923 | ||
2924 | irel->r_info = | |
b34976b6 AM |
2925 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL); |
2926 | ||
86aba9db NC |
2927 | irel->r_addend = addend; |
2928 | addend = 0; | |
2929 | ||
2930 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2931 | /* If this needs to be changed because of future relaxing, | |
2932 | it will be handled here like other internal IND12W | |
2933 | relocs. */ | |
2934 | bfd_put_32 (abfd, | |
2935 | 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf), | |
2936 | contents + irel->r_offset); | |
2937 | else | |
2938 | /* We can't fully resolve this yet, because the external | |
2939 | symbol value may be changed by future relaxing. | |
2940 | We let the final link phase handle it. */ | |
2941 | bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset); | |
2942 | ||
2943 | hi_irelfn->r_info = | |
2944 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); | |
2945 | lo_irelfn->r_info = | |
2946 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); | |
2947 | if (!v850_elf_relax_delete_bytes (abfd, sec, | |
2948 | irel->r_offset + 4, toaddr, 6)) | |
2949 | goto error_return; | |
2950 | ||
2951 | align_pad_size += 6; | |
2952 | } | |
2953 | else | |
2954 | { | |
2955 | /* Replace the long jump with a br. */ | |
2956 | ||
2957 | irel->r_info = | |
2958 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL); | |
2959 | ||
2960 | irel->r_addend = addend; | |
2961 | addend = 0; | |
2962 | ||
2963 | if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) | |
2964 | /* If this needs to be changed because of future relaxing, | |
2965 | it will be handled here like other internal IND12W | |
2966 | relocs. */ | |
2967 | bfd_put_16 (abfd, | |
2968 | 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070), | |
2969 | contents + irel->r_offset); | |
2970 | else | |
2971 | /* We can't fully resolve this yet, because the external | |
2972 | symbol value may be changed by future relaxing. | |
2973 | We let the final link phase handle it. */ | |
2974 | bfd_put_16 (abfd, 0x0585, contents + irel->r_offset); | |
2975 | ||
2976 | hi_irelfn->r_info = | |
2977 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); | |
2978 | lo_irelfn->r_info = | |
2979 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); | |
2980 | if (!v850_elf_relax_delete_bytes (abfd, sec, | |
2981 | irel->r_offset + 2, toaddr, 8)) | |
2982 | goto error_return; | |
2983 | ||
2984 | align_pad_size += 8; | |
2985 | } | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | irelalign = NULL; | |
2990 | for (irel = internal_relocs; irel < irelend; irel++) | |
2991 | { | |
2992 | if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN | |
2993 | && irel->r_offset == toaddr) | |
2994 | { | |
2995 | irel->r_offset -= align_pad_size; | |
2996 | ||
2997 | if (irelalign == NULL || irelalign->r_addend > irel->r_addend) | |
2998 | irelalign = irel; | |
2999 | } | |
3000 | } | |
3001 | ||
3002 | addr = toaddr; | |
3003 | } | |
3004 | ||
3005 | if (!irelalign) | |
3006 | { | |
3007 | #ifdef DEBUG_RELAX | |
3008 | fprintf (stderr, "relax pad %d shorten %d -> %d\n", | |
3009 | align_pad_size, | |
eea6121a AM |
3010 | sec->size, |
3011 | sec->size - align_pad_size); | |
86aba9db | 3012 | #endif |
eea6121a | 3013 | sec->size -= align_pad_size; |
86aba9db NC |
3014 | } |
3015 | ||
5cec6941 NC |
3016 | finish: |
3017 | if (internal_relocs != NULL | |
3018 | && elf_section_data (sec)->relocs != internal_relocs) | |
3019 | free (internal_relocs); | |
86aba9db | 3020 | |
5cec6941 NC |
3021 | if (contents != NULL |
3022 | && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents) | |
3023 | free (contents); | |
86aba9db | 3024 | |
5cec6941 NC |
3025 | if (isymbuf != NULL |
3026 | && symtab_hdr->contents != (bfd_byte *) isymbuf) | |
3027 | free (isymbuf); | |
86aba9db | 3028 | |
5cec6941 | 3029 | return result; |
86aba9db | 3030 | |
5cec6941 | 3031 | error_return: |
b34976b6 | 3032 | result = FALSE; |
5cec6941 | 3033 | goto finish; |
86aba9db | 3034 | } |
2f89ff8d | 3035 | |
b35d266b | 3036 | static const struct bfd_elf_special_section v850_elf_special_sections[] = |
7f4d3958 | 3037 | { |
0112cd26 NC |
3038 | { STRING_COMMA_LEN (".call_table_data"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE) }, |
3039 | { STRING_COMMA_LEN (".call_table_text"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3040 | + SHF_EXECINSTR) }, | |
3041 | { STRING_COMMA_LEN (".rosdata"), -2, SHT_PROGBITS, (SHF_ALLOC | |
3042 | + SHF_V850_GPREL) }, | |
3043 | { STRING_COMMA_LEN (".rozdata"), -2, SHT_PROGBITS, (SHF_ALLOC | |
3044 | + SHF_V850_R0REL) }, | |
3045 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE | |
3046 | + SHF_V850_GPREL) }, | |
3047 | { STRING_COMMA_LEN (".scommon"), -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE | |
3048 | + SHF_V850_GPREL) }, | |
3049 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3050 | + SHF_V850_GPREL) }, | |
3051 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE | |
3052 | + SHF_V850_EPREL) }, | |
3053 | { STRING_COMMA_LEN (".tcommon"), -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE | |
3054 | + SHF_V850_R0REL) }, | |
3055 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3056 | + SHF_V850_EPREL) }, | |
3057 | { STRING_COMMA_LEN (".zbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE | |
3058 | + SHF_V850_R0REL) }, | |
3059 | { STRING_COMMA_LEN (".zcommon"), -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE | |
3060 | + SHF_V850_R0REL) }, | |
3061 | { STRING_COMMA_LEN (".zdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE | |
3062 | + SHF_V850_R0REL) }, | |
3063 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 | 3064 | }; |
252b5132 RH |
3065 | \f |
3066 | #define TARGET_LITTLE_SYM bfd_elf32_v850_vec | |
3067 | #define TARGET_LITTLE_NAME "elf32-v850" | |
3068 | #define ELF_ARCH bfd_arch_v850 | |
aa4f99bb AO |
3069 | #define ELF_MACHINE_CODE EM_V850 |
3070 | #define ELF_MACHINE_ALT1 EM_CYGNUS_V850 | |
46767561 | 3071 | #define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */ |
252b5132 | 3072 | #define ELF_MAXPAGESIZE 0x1000 |
435b1e90 | 3073 | |
252b5132 RH |
3074 | #define elf_info_to_howto v850_elf_info_to_howto_rela |
3075 | #define elf_info_to_howto_rel v850_elf_info_to_howto_rel | |
3076 | ||
3077 | #define elf_backend_check_relocs v850_elf_check_relocs | |
3078 | #define elf_backend_relocate_section v850_elf_relocate_section | |
3079 | #define elf_backend_object_p v850_elf_object_p | |
3080 | #define elf_backend_final_write_processing v850_elf_final_write_processing | |
3081 | #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section | |
3082 | #define elf_backend_symbol_processing v850_elf_symbol_processing | |
3083 | #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook | |
3084 | #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook | |
3085 | #define elf_backend_section_from_shdr v850_elf_section_from_shdr | |
3086 | #define elf_backend_fake_sections v850_elf_fake_sections | |
3087 | #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook | |
29ef7005 | 3088 | #define elf_backend_special_sections v850_elf_special_sections |
252b5132 RH |
3089 | |
3090 | #define elf_backend_can_gc_sections 1 | |
f0fe0e16 | 3091 | #define elf_backend_rela_normal 1 |
252b5132 | 3092 | |
252b5132 RH |
3093 | #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name |
3094 | #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup | |
157090f7 | 3095 | #define bfd_elf32_bfd_reloc_name_lookup v850_elf_reloc_name_lookup |
252b5132 RH |
3096 | #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data |
3097 | #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags | |
3098 | #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data | |
86aba9db | 3099 | #define bfd_elf32_bfd_relax_section v850_elf_relax_section |
252b5132 RH |
3100 | |
3101 | #define elf_symbol_leading_char '_' | |
3102 | ||
3103 | #include "elf32-target.h" |