Commit | Line | Data |
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d9352518 | 1 | /* MeP-specific support for 32-bit ELF. |
2571583a | 2 | Copyright (C) 2001-2017 Free Software Foundation, Inc. |
d9352518 DB |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
d9352518 DB |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
d9352518 | 20 | |
d9352518 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
d9352518 DB |
23 | #include "libbfd.h" |
24 | #include "elf-bfd.h" | |
25 | #include "elf/mep.h" | |
26 | #include "libiberty.h" | |
27 | ||
28 | /* Forward declarations. */ | |
29 | ||
30 | /* Private relocation functions. */ | |
31 | \f | |
32 | #define MEPREL(type, size, bits, right, left, pcrel, overflow, mask) \ | |
153a2776 | 33 | {(unsigned)type, right, size, bits, pcrel, left, overflow, bfd_elf_generic_reloc, #type, FALSE, 0, mask, 0 } |
d9352518 DB |
34 | |
35 | #define N complain_overflow_dont | |
36 | #define S complain_overflow_signed | |
37 | #define U complain_overflow_unsigned | |
38 | ||
d9352518 DB |
39 | static reloc_howto_type mep_elf_howto_table [] = |
40 | { | |
41 | /* type, size, bits, leftshift, rightshift, pcrel, OD/OS/OU, mask. */ | |
07d6d2b8 AM |
42 | MEPREL (R_MEP_NONE, 3, 0, 0, 0, 0, N, 0), |
43 | MEPREL (R_RELC, 0, 0, 0, 0, 0, N, 0), | |
d9352518 DB |
44 | /* MEPRELOC:HOWTO */ |
45 | /* This section generated from bfd/mep-relocs.pl from include/elf/mep.h. */ | |
07d6d2b8 AM |
46 | MEPREL (R_MEP_8, 0, 8, 0, 0, 0, U, 0xff), |
47 | MEPREL (R_MEP_16, 1, 16, 0, 0, 0, U, 0xffff), | |
48 | MEPREL (R_MEP_32, 2, 32, 0, 0, 0, U, 0xffffffff), | |
d9352518 DB |
49 | MEPREL (R_MEP_PCREL8A2, 1, 8, 1, 1, 1, S, 0x00fe), |
50 | MEPREL (R_MEP_PCREL12A2,1, 12, 1, 1, 1, S, 0x0ffe), | |
51 | MEPREL (R_MEP_PCREL17A2,2, 17, 0, 1, 1, S, 0x0000ffff), | |
52 | MEPREL (R_MEP_PCREL24A2,2, 24, 0, 1, 1, S, 0x07f0ffff), | |
53 | MEPREL (R_MEP_PCABS24A2,2, 24, 0, 1, 0, U, 0x07f0ffff), | |
07d6d2b8 AM |
54 | MEPREL (R_MEP_LOW16, 2, 16, 0, 0, 0, N, 0x0000ffff), |
55 | MEPREL (R_MEP_HI16U, 2, 32, 0,16, 0, N, 0x0000ffff), | |
56 | MEPREL (R_MEP_HI16S, 2, 32, 0,16, 0, N, 0x0000ffff), | |
57 | MEPREL (R_MEP_GPREL, 2, 16, 0, 0, 0, S, 0x0000ffff), | |
58 | MEPREL (R_MEP_TPREL, 2, 16, 0, 0, 0, S, 0x0000ffff), | |
59 | MEPREL (R_MEP_TPREL7, 1, 7, 0, 0, 0, U, 0x007f), | |
d9352518 DB |
60 | MEPREL (R_MEP_TPREL7A2, 1, 7, 1, 1, 0, U, 0x007e), |
61 | MEPREL (R_MEP_TPREL7A4, 1, 7, 2, 2, 0, U, 0x007c), | |
07d6d2b8 | 62 | MEPREL (R_MEP_UIMM24, 2, 24, 0, 0, 0, U, 0x00ffffff), |
d9352518 DB |
63 | MEPREL (R_MEP_ADDR24A4, 2, 24, 0, 2, 0, U, 0x00fcffff), |
64 | MEPREL (R_MEP_GNU_VTINHERIT,1, 0,16,32, 0, N, 0x0000), | |
07d6d2b8 | 65 | MEPREL (R_MEP_GNU_VTENTRY,1, 0,16,32, 0, N, 0x0000), |
d9352518 DB |
66 | /* MEPRELOC:END */ |
67 | }; | |
68 | ||
69 | #define VALID_MEP_RELOC(N) ((N) >= 0 \ | |
70 | && (N) < ARRAY_SIZE (mep_elf_howto_table) | |
71 | ||
72 | #undef N | |
73 | #undef S | |
74 | #undef U | |
d9352518 DB |
75 | \f |
76 | ||
77 | #define BFD_RELOC_MEP_NONE BFD_RELOC_NONE | |
78 | #if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE) | |
79 | #define MAP(n) case BFD_RELOC_MEP_##n: type = R_MEP_##n; break | |
80 | #else | |
81 | #define MAP(n) case BFD_RELOC_MEP_/**/n: type = R_MEP_/**/n; break | |
82 | #endif | |
83 | ||
84 | static reloc_howto_type * | |
85 | mep_reloc_type_lookup | |
86 | (bfd * abfd ATTRIBUTE_UNUSED, | |
87 | bfd_reloc_code_real_type code) | |
88 | { | |
89 | unsigned int type = 0; | |
90 | ||
91 | switch (code) | |
92 | { | |
93 | MAP(NONE); | |
94 | case BFD_RELOC_8: | |
95 | type = R_MEP_8; | |
96 | break; | |
97 | case BFD_RELOC_16: | |
98 | type = R_MEP_16; | |
99 | break; | |
100 | case BFD_RELOC_32: | |
101 | type = R_MEP_32; | |
102 | break; | |
103 | case BFD_RELOC_VTABLE_ENTRY: | |
104 | type = R_MEP_GNU_VTENTRY; | |
105 | break; | |
106 | case BFD_RELOC_VTABLE_INHERIT: | |
107 | type = R_MEP_GNU_VTINHERIT; | |
108 | break; | |
109 | case BFD_RELOC_RELC: | |
110 | type = R_RELC; | |
111 | break; | |
112 | ||
113 | /* MEPRELOC:MAP */ | |
114 | /* This section generated from bfd/mep-relocs.pl from include/elf/mep.h. */ | |
115 | MAP(8); | |
116 | MAP(16); | |
117 | MAP(32); | |
118 | MAP(PCREL8A2); | |
119 | MAP(PCREL12A2); | |
120 | MAP(PCREL17A2); | |
121 | MAP(PCREL24A2); | |
122 | MAP(PCABS24A2); | |
123 | MAP(LOW16); | |
124 | MAP(HI16U); | |
125 | MAP(HI16S); | |
126 | MAP(GPREL); | |
127 | MAP(TPREL); | |
128 | MAP(TPREL7); | |
129 | MAP(TPREL7A2); | |
130 | MAP(TPREL7A4); | |
131 | MAP(UIMM24); | |
132 | MAP(ADDR24A4); | |
133 | MAP(GNU_VTINHERIT); | |
134 | MAP(GNU_VTENTRY); | |
135 | /* MEPRELOC:END */ | |
136 | ||
137 | default: | |
138 | /* Pacify gcc -Wall. */ | |
4eca0228 | 139 | _bfd_error_handler (_("mep: no reloc for code %d"), code); |
d9352518 DB |
140 | return NULL; |
141 | } | |
142 | ||
143 | if (mep_elf_howto_table[type].type != type) | |
144 | { | |
695344c0 | 145 | /* xgettext:c-format */ |
4eca0228 AM |
146 | _bfd_error_handler (_("MeP: howto %d has type %d"), |
147 | type, mep_elf_howto_table[type].type); | |
d9352518 DB |
148 | abort (); |
149 | } | |
150 | ||
151 | return mep_elf_howto_table + type; | |
152 | } | |
153 | ||
154 | #undef MAP | |
155 | ||
157090f7 AM |
156 | static reloc_howto_type * |
157 | mep_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
158 | { | |
159 | unsigned int i; | |
160 | ||
161 | for (i = 0; | |
162 | i < sizeof (mep_elf_howto_table) / sizeof (mep_elf_howto_table[0]); | |
163 | i++) | |
164 | if (mep_elf_howto_table[i].name != NULL | |
165 | && strcasecmp (mep_elf_howto_table[i].name, r_name) == 0) | |
166 | return &mep_elf_howto_table[i]; | |
167 | ||
168 | return NULL; | |
169 | } | |
d9352518 DB |
170 | \f |
171 | /* Perform a single relocation. */ | |
172 | ||
173 | static struct bfd_link_info *mep_info; | |
174 | static int warn_tp = 0, warn_sda = 0; | |
175 | ||
176 | static bfd_vma | |
177 | mep_lookup_global | |
178 | (char * name, | |
179 | bfd_vma ofs, | |
180 | bfd_vma * cache, | |
181 | int * warn) | |
182 | { | |
183 | struct bfd_link_hash_entry *h; | |
184 | ||
185 | if (*cache || *warn) | |
186 | return *cache; | |
187 | ||
188 | h = bfd_link_hash_lookup (mep_info->hash, name, FALSE, FALSE, TRUE); | |
189 | if (h == 0 || h->type != bfd_link_hash_defined) | |
190 | { | |
191 | *warn = ofs + 1; | |
192 | return 0; | |
193 | } | |
194 | *cache = (h->u.def.value | |
195 | + h->u.def.section->output_section->vma | |
196 | + h->u.def.section->output_offset); | |
197 | return *cache; | |
198 | } | |
199 | ||
200 | static bfd_vma | |
201 | mep_tpoff_base (bfd_vma ofs) | |
202 | { | |
203 | static bfd_vma cache = 0; | |
204 | return mep_lookup_global ("__tpbase", ofs, &cache, &warn_tp); | |
205 | } | |
206 | ||
207 | static bfd_vma | |
208 | mep_sdaoff_base (bfd_vma ofs) | |
209 | { | |
210 | static bfd_vma cache = 0; | |
211 | return mep_lookup_global ("__sdabase", ofs, &cache, &warn_sda); | |
212 | } | |
213 | ||
214 | static bfd_reloc_status_type | |
215 | mep_final_link_relocate | |
07d6d2b8 AM |
216 | (reloc_howto_type * howto, |
217 | bfd * input_bfd, | |
218 | asection * input_section, | |
219 | bfd_byte * contents, | |
d9352518 | 220 | Elf_Internal_Rela * rel, |
07d6d2b8 | 221 | bfd_vma relocation) |
d9352518 DB |
222 | { |
223 | unsigned long u; | |
224 | long s; | |
225 | unsigned char *byte; | |
226 | bfd_vma pc; | |
227 | bfd_reloc_status_type r = bfd_reloc_ok; | |
228 | int e2, e4; | |
229 | ||
230 | if (bfd_big_endian (input_bfd)) | |
231 | { | |
232 | e2 = 0; | |
233 | e4 = 0; | |
234 | } | |
235 | else | |
236 | { | |
237 | e2 = 1; | |
238 | e4 = 3; | |
239 | } | |
240 | ||
241 | pc = (input_section->output_section->vma | |
242 | + input_section->output_offset | |
243 | + rel->r_offset); | |
244 | ||
245 | s = relocation + rel->r_addend; | |
246 | ||
247 | byte = (unsigned char *)contents + rel->r_offset; | |
248 | ||
249 | if (howto->type == R_MEP_PCREL24A2 | |
250 | && s == 0 | |
251 | && pc >= 0x800000) | |
252 | { | |
253 | /* This is an unreachable branch to an undefined weak function. | |
254 | Silently ignore it, since the opcode can't do that but should | |
255 | never be executed anyway. */ | |
256 | return bfd_reloc_ok; | |
257 | } | |
258 | ||
259 | if (howto->pc_relative) | |
260 | s -= pc; | |
261 | ||
262 | u = (unsigned long) s; | |
263 | ||
264 | switch (howto->type) | |
265 | { | |
266 | /* MEPRELOC:APPLY */ | |
267 | /* This section generated from bfd/mep-relocs.pl from include/elf/mep.h. */ | |
268 | case R_MEP_8: /* 76543210 */ | |
269 | if (u > 255) r = bfd_reloc_overflow; | |
270 | byte[0] = (u & 0xff); | |
271 | break; | |
272 | case R_MEP_16: /* fedcba9876543210 */ | |
273 | if (u > 65535) r = bfd_reloc_overflow; | |
274 | byte[0^e2] = ((u >> 8) & 0xff); | |
275 | byte[1^e2] = (u & 0xff); | |
276 | break; | |
277 | case R_MEP_32: /* vutsrqponmlkjihgfedcba9876543210 */ | |
278 | byte[0^e4] = ((u >> 24) & 0xff); | |
279 | byte[1^e4] = ((u >> 16) & 0xff); | |
280 | byte[2^e4] = ((u >> 8) & 0xff); | |
281 | byte[3^e4] = (u & 0xff); | |
282 | break; | |
283 | case R_MEP_PCREL8A2: /* --------7654321- */ | |
284 | if (-128 > s || s > 127) r = bfd_reloc_overflow; | |
285 | byte[1^e2] = (byte[1^e2] & 0x01) | (s & 0xfe); | |
286 | break; | |
287 | case R_MEP_PCREL12A2: /* ----ba987654321- */ | |
288 | if (-2048 > s || s > 2047) r = bfd_reloc_overflow; | |
289 | byte[0^e2] = (byte[0^e2] & 0xf0) | ((s >> 8) & 0x0f); | |
290 | byte[1^e2] = (byte[1^e2] & 0x01) | (s & 0xfe); | |
291 | break; | |
292 | case R_MEP_PCREL17A2: /* ----------------gfedcba987654321 */ | |
293 | if (-65536 > s || s > 65535) r = bfd_reloc_overflow; | |
294 | byte[2^e2] = ((s >> 9) & 0xff); | |
295 | byte[3^e2] = ((s >> 1) & 0xff); | |
296 | break; | |
297 | case R_MEP_PCREL24A2: /* -----7654321----nmlkjihgfedcba98 */ | |
298 | if (-8388608 > s || s > 8388607) r = bfd_reloc_overflow; | |
299 | byte[0^e2] = (byte[0^e2] & 0xf8) | ((s >> 5) & 0x07); | |
300 | byte[1^e2] = (byte[1^e2] & 0x0f) | ((s << 3) & 0xf0); | |
301 | byte[2^e2] = ((s >> 16) & 0xff); | |
302 | byte[3^e2] = ((s >> 8) & 0xff); | |
303 | break; | |
304 | case R_MEP_PCABS24A2: /* -----7654321----nmlkjihgfedcba98 */ | |
305 | if (u > 16777215) r = bfd_reloc_overflow; | |
306 | byte[0^e2] = (byte[0^e2] & 0xf8) | ((u >> 5) & 0x07); | |
307 | byte[1^e2] = (byte[1^e2] & 0x0f) | ((u << 3) & 0xf0); | |
308 | byte[2^e2] = ((u >> 16) & 0xff); | |
309 | byte[3^e2] = ((u >> 8) & 0xff); | |
310 | break; | |
311 | case R_MEP_LOW16: /* ----------------fedcba9876543210 */ | |
312 | byte[2^e2] = ((u >> 8) & 0xff); | |
313 | byte[3^e2] = (u & 0xff); | |
314 | break; | |
315 | case R_MEP_HI16U: /* ----------------vutsrqponmlkjihg */ | |
316 | byte[2^e2] = ((u >> 24) & 0xff); | |
317 | byte[3^e2] = ((u >> 16) & 0xff); | |
318 | break; | |
319 | case R_MEP_HI16S: /* ----------------vutsrqponmlkjihg */ | |
b4928193 NC |
320 | if (s & 0x8000) |
321 | s += 0x10000; | |
d9352518 DB |
322 | byte[2^e2] = ((s >> 24) & 0xff); |
323 | byte[3^e2] = ((s >> 16) & 0xff); | |
324 | break; | |
325 | case R_MEP_GPREL: /* ----------------fedcba9876543210 */ | |
326 | s -= mep_sdaoff_base(rel->r_offset); | |
327 | if (-32768 > s || s > 32767) r = bfd_reloc_overflow; | |
328 | byte[2^e2] = ((s >> 8) & 0xff); | |
329 | byte[3^e2] = (s & 0xff); | |
330 | break; | |
331 | case R_MEP_TPREL: /* ----------------fedcba9876543210 */ | |
332 | s -= mep_tpoff_base(rel->r_offset); | |
333 | if (-32768 > s || s > 32767) r = bfd_reloc_overflow; | |
334 | byte[2^e2] = ((s >> 8) & 0xff); | |
335 | byte[3^e2] = (s & 0xff); | |
336 | break; | |
337 | case R_MEP_TPREL7: /* ---------6543210 */ | |
338 | u -= mep_tpoff_base(rel->r_offset); | |
339 | if (u > 127) r = bfd_reloc_overflow; | |
340 | byte[1^e2] = (byte[1^e2] & 0x80) | (u & 0x7f); | |
341 | break; | |
342 | case R_MEP_TPREL7A2: /* ---------654321- */ | |
343 | u -= mep_tpoff_base(rel->r_offset); | |
344 | if (u > 127) r = bfd_reloc_overflow; | |
345 | byte[1^e2] = (byte[1^e2] & 0x81) | (u & 0x7e); | |
346 | break; | |
347 | case R_MEP_TPREL7A4: /* ---------65432-- */ | |
348 | u -= mep_tpoff_base(rel->r_offset); | |
349 | if (u > 127) r = bfd_reloc_overflow; | |
350 | byte[1^e2] = (byte[1^e2] & 0x83) | (u & 0x7c); | |
351 | break; | |
352 | case R_MEP_UIMM24: /* --------76543210nmlkjihgfedcba98 */ | |
353 | if (u > 16777215) r = bfd_reloc_overflow; | |
354 | byte[1^e2] = (u & 0xff); | |
355 | byte[2^e2] = ((u >> 16) & 0xff); | |
356 | byte[3^e2] = ((u >> 8) & 0xff); | |
357 | break; | |
358 | case R_MEP_ADDR24A4: /* --------765432--nmlkjihgfedcba98 */ | |
359 | if (u > 16777215) r = bfd_reloc_overflow; | |
360 | byte[1^e2] = (byte[1^e2] & 0x03) | (u & 0xfc); | |
361 | byte[2^e2] = ((u >> 16) & 0xff); | |
362 | byte[3^e2] = ((u >> 8) & 0xff); | |
363 | break; | |
364 | case R_MEP_GNU_VTINHERIT: /* ---------------- */ | |
365 | break; | |
366 | case R_MEP_GNU_VTENTRY: /* ---------------- */ | |
367 | break; | |
368 | /* MEPRELOC:END */ | |
369 | default: | |
370 | abort (); | |
371 | } | |
372 | ||
373 | return r; | |
374 | } | |
375 | \f | |
376 | /* Set the howto pointer for a MEP ELF reloc. */ | |
377 | ||
378 | static void | |
379 | mep_info_to_howto_rela | |
07d6d2b8 AM |
380 | (bfd * abfd ATTRIBUTE_UNUSED, |
381 | arelent * cache_ptr, | |
d9352518 DB |
382 | Elf_Internal_Rela * dst) |
383 | { | |
384 | unsigned int r_type; | |
385 | ||
386 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
387 | if (r_type >= R_MEP_max) |
388 | { | |
695344c0 | 389 | /* xgettext:c-format */ |
64d29018 | 390 | _bfd_error_handler (_("%B: invalid MEP reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
391 | r_type = 0; |
392 | } | |
d9352518 DB |
393 | cache_ptr->howto = & mep_elf_howto_table [r_type]; |
394 | } | |
d9352518 DB |
395 | \f |
396 | /* Relocate a MEP ELF section. | |
397 | There is some attempt to make this function usable for many architectures, | |
398 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
399 | if only to serve as a learning tool. | |
400 | ||
401 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
402 | to handle the relocations for a section. | |
403 | ||
404 | The relocs are always passed as Rela structures; if the section | |
405 | actually uses Rel structures, the r_addend field will always be | |
406 | zero. | |
407 | ||
408 | This function is responsible for adjusting the section contents as | |
409 | necessary, and (if using Rela relocs and generating a relocatable | |
410 | output file) adjusting the reloc addend as necessary. | |
411 | ||
412 | This function does not have to worry about setting the reloc | |
413 | address or the reloc symbol index. | |
414 | ||
415 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
416 | ||
417 | LOCAL_SECTIONS is an array giving the section in the input file | |
418 | corresponding to the st_shndx field of each local symbol. | |
419 | ||
420 | The global hash table entry for the global symbols can be found | |
421 | via elf_sym_hashes (input_bfd). | |
422 | ||
423 | When generating relocatable output, this function must handle | |
424 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
425 | going to be the section symbol corresponding to the output | |
426 | section, which means that the addend must be adjusted | |
427 | accordingly. */ | |
428 | ||
429 | static bfd_boolean | |
430 | mep_elf_relocate_section | |
07d6d2b8 | 431 | (bfd * output_bfd ATTRIBUTE_UNUSED, |
d9352518 | 432 | struct bfd_link_info * info, |
07d6d2b8 AM |
433 | bfd * input_bfd, |
434 | asection * input_section, | |
435 | bfd_byte * contents, | |
d9352518 | 436 | Elf_Internal_Rela * relocs, |
07d6d2b8 AM |
437 | Elf_Internal_Sym * local_syms, |
438 | asection ** local_sections) | |
d9352518 | 439 | { |
07d6d2b8 | 440 | Elf_Internal_Shdr * symtab_hdr; |
d9352518 | 441 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
442 | Elf_Internal_Rela * rel; |
443 | Elf_Internal_Rela * relend; | |
d9352518 DB |
444 | |
445 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
446 | sym_hashes = elf_sym_hashes (input_bfd); | |
447 | relend = relocs + input_section->reloc_count; | |
448 | ||
449 | mep_info = info; | |
450 | ||
451 | for (rel = relocs; rel < relend; rel ++) | |
452 | { | |
07d6d2b8 AM |
453 | reloc_howto_type * howto; |
454 | unsigned long r_symndx; | |
455 | Elf_Internal_Sym * sym; | |
456 | asection * sec; | |
d9352518 | 457 | struct elf_link_hash_entry * h; |
07d6d2b8 AM |
458 | bfd_vma relocation; |
459 | bfd_reloc_status_type r; | |
460 | const char * name = NULL; | |
461 | int r_type; | |
d9352518 DB |
462 | |
463 | r_type = ELF32_R_TYPE (rel->r_info); | |
d9352518 | 464 | r_symndx = ELF32_R_SYM (rel->r_info); |
d9352518 DB |
465 | howto = mep_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
466 | h = NULL; | |
467 | sym = NULL; | |
468 | sec = NULL; | |
469 | ||
470 | if (r_symndx < symtab_hdr->sh_info) | |
471 | { | |
472 | sym = local_syms + r_symndx; | |
473 | sec = local_sections [r_symndx]; | |
474 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
475 | ||
476 | name = bfd_elf_string_from_elf_section | |
477 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
478 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
d9352518 DB |
479 | } |
480 | else | |
481 | { | |
62d887d4 | 482 | bfd_boolean warned, unresolved_reloc, ignored; |
d9352518 | 483 | |
0f02bbd9 AM |
484 | RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, |
485 | r_symndx, symtab_hdr, sym_hashes, | |
486 | h, sec, relocation, | |
62d887d4 | 487 | unresolved_reloc, warned, ignored); |
d9352518 DB |
488 | |
489 | name = h->root.root.string; | |
d9352518 DB |
490 | } |
491 | ||
dbaa2011 | 492 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 493 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 494 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 495 | |
0e1862bb | 496 | if (bfd_link_relocatable (info)) |
0f02bbd9 | 497 | continue; |
ab96bf03 | 498 | |
cdfeee4f AM |
499 | if (r_type == R_RELC) |
500 | r = bfd_elf_perform_complex_relocation (input_bfd, input_section, | |
501 | contents, rel, relocation); | |
502 | else | |
503 | r = mep_final_link_relocate (howto, input_bfd, input_section, | |
504 | contents, rel, relocation); | |
d9352518 DB |
505 | |
506 | if (r != bfd_reloc_ok) | |
507 | { | |
508 | const char * msg = (const char *) NULL; | |
509 | ||
510 | switch (r) | |
511 | { | |
512 | case bfd_reloc_overflow: | |
1a72702b | 513 | (*info->callbacks->reloc_overflow) |
d9352518 DB |
514 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, |
515 | input_bfd, input_section, rel->r_offset); | |
516 | break; | |
517 | ||
518 | case bfd_reloc_undefined: | |
1a72702b | 519 | (*info->callbacks->undefined_symbol) |
d9352518 DB |
520 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
521 | break; | |
522 | ||
523 | case bfd_reloc_outofrange: | |
524 | msg = _("internal error: out of range error"); | |
525 | break; | |
526 | ||
527 | case bfd_reloc_notsupported: | |
528 | msg = _("internal error: unsupported relocation error"); | |
529 | break; | |
530 | ||
531 | case bfd_reloc_dangerous: | |
532 | msg = _("internal error: dangerous relocation"); | |
533 | break; | |
534 | ||
535 | default: | |
536 | msg = _("internal error: unknown error"); | |
537 | break; | |
538 | } | |
539 | ||
540 | if (msg) | |
1a72702b AM |
541 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
542 | input_section, rel->r_offset); | |
d9352518 DB |
543 | } |
544 | } | |
545 | ||
546 | if (warn_tp) | |
547 | info->callbacks->undefined_symbol | |
548 | (info, "__tpbase", input_bfd, input_section, warn_tp-1, TRUE); | |
549 | if (warn_sda) | |
550 | info->callbacks->undefined_symbol | |
551 | (info, "__sdabase", input_bfd, input_section, warn_sda-1, TRUE); | |
552 | if (warn_sda || warn_tp) | |
553 | return FALSE; | |
554 | ||
555 | return TRUE; | |
556 | } | |
d9352518 DB |
557 | \f |
558 | /* Function to set the ELF flag bits. */ | |
559 | ||
560 | static bfd_boolean | |
561 | mep_elf_set_private_flags (bfd * abfd, | |
562 | flagword flags) | |
563 | { | |
564 | elf_elfheader (abfd)->e_flags = flags; | |
565 | elf_flags_init (abfd) = TRUE; | |
566 | return TRUE; | |
567 | } | |
568 | ||
d9352518 DB |
569 | /* Merge backend specific data from an object file to the output |
570 | object file when linking. */ | |
571 | ||
572 | static bfd_boolean | |
50e03d47 | 573 | mep_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
d9352518 | 574 | { |
50e03d47 | 575 | bfd *obfd = info->output_bfd; |
d9352518 DB |
576 | static bfd *last_ibfd = 0; |
577 | flagword old_flags, new_flags; | |
578 | flagword old_partial, new_partial; | |
579 | ||
cc643b88 | 580 | /* Check if we have the same endianness. */ |
50e03d47 | 581 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
d9352518 DB |
582 | return FALSE; |
583 | ||
584 | new_flags = elf_elfheader (ibfd)->e_flags; | |
585 | old_flags = elf_elfheader (obfd)->e_flags; | |
586 | ||
587 | #ifdef DEBUG | |
d42c267e | 588 | _bfd_error_handler ("%B: old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s", |
d9352518 DB |
589 | ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no"); |
590 | #endif | |
591 | ||
592 | /* First call, no flags set. */ | |
593 | if (!elf_flags_init (obfd)) | |
594 | { | |
595 | elf_flags_init (obfd) = TRUE; | |
596 | old_flags = new_flags; | |
597 | } | |
598 | else if ((new_flags | old_flags) & EF_MEP_LIBRARY) | |
599 | { | |
600 | /* Non-library flags trump library flags. The choice doesn't really | |
601 | matter if both OLD_FLAGS and NEW_FLAGS have EF_MEP_LIBRARY set. */ | |
602 | if (old_flags & EF_MEP_LIBRARY) | |
603 | old_flags = new_flags; | |
604 | } | |
605 | else | |
606 | { | |
607 | /* Make sure they're for the same mach. Allow upgrade from the "mep" | |
608 | mach. */ | |
609 | new_partial = (new_flags & EF_MEP_CPU_MASK); | |
610 | old_partial = (old_flags & EF_MEP_CPU_MASK); | |
611 | if (new_partial == old_partial) | |
612 | ; | |
613 | else if (new_partial == EF_MEP_CPU_MEP) | |
614 | ; | |
615 | else if (old_partial == EF_MEP_CPU_MEP) | |
616 | old_flags = (old_flags & ~EF_MEP_CPU_MASK) | new_partial; | |
617 | else | |
618 | { | |
695344c0 | 619 | /* xgettext:c-format */ |
63a5468a AM |
620 | _bfd_error_handler (_("%B and %B are for different cores"), |
621 | last_ibfd, ibfd); | |
d9352518 DB |
622 | bfd_set_error (bfd_error_invalid_target); |
623 | return FALSE; | |
624 | } | |
625 | ||
626 | /* Make sure they're for the same me_module. Allow basic config to | |
627 | mix with any other. */ | |
628 | new_partial = (new_flags & EF_MEP_INDEX_MASK); | |
629 | old_partial = (old_flags & EF_MEP_INDEX_MASK); | |
630 | if (new_partial == old_partial) | |
631 | ; | |
632 | else if (new_partial == 0) | |
633 | ; | |
634 | else if (old_partial == 0) | |
635 | old_flags = (old_flags & ~EF_MEP_INDEX_MASK) | new_partial; | |
636 | else | |
637 | { | |
695344c0 | 638 | /* xgettext:c-format */ |
63a5468a AM |
639 | _bfd_error_handler (_("%B and %B are for different configurations"), |
640 | last_ibfd, ibfd); | |
d9352518 DB |
641 | bfd_set_error (bfd_error_invalid_target); |
642 | return FALSE; | |
643 | } | |
644 | } | |
645 | ||
646 | elf_elfheader (obfd)->e_flags = old_flags; | |
647 | last_ibfd = ibfd; | |
648 | return TRUE; | |
649 | } | |
650 | ||
651 | /* This will be edited by the MeP configration tool. */ | |
652 | static const char * config_names[] = | |
653 | { | |
654 | "basic" | |
655 | /* start-mepcfgtool */ | |
c1a0a41f | 656 | ,"default" |
d9352518 DB |
657 | /* end-mepcfgtool */ |
658 | }; | |
659 | ||
660 | static const char * core_names[] = | |
661 | { | |
662 | "MeP", "MeP-c2", "MeP-c3", "MeP-h1" | |
663 | }; | |
664 | ||
665 | static bfd_boolean | |
666 | mep_elf_print_private_bfd_data (bfd * abfd, void * ptr) | |
667 | { | |
668 | FILE * file = (FILE *) ptr; | |
669 | flagword flags, partial_flags; | |
670 | ||
671 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
672 | ||
673 | /* Print normal ELF private data. */ | |
674 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
675 | ||
676 | flags = elf_elfheader (abfd)->e_flags; | |
0af1713e | 677 | fprintf (file, _("private flags = 0x%lx"), (unsigned long) flags); |
d9352518 DB |
678 | |
679 | partial_flags = (flags & EF_MEP_CPU_MASK) >> 24; | |
680 | if (partial_flags < ARRAY_SIZE (core_names)) | |
681 | fprintf (file, " core: %s", core_names[(long)partial_flags]); | |
682 | ||
683 | partial_flags = flags & EF_MEP_INDEX_MASK; | |
684 | if (partial_flags < ARRAY_SIZE (config_names)) | |
685 | fprintf (file, " me_module: %s", config_names[(long)partial_flags]); | |
686 | ||
687 | fputc ('\n', file); | |
688 | ||
689 | return TRUE; | |
690 | } | |
691 | ||
692 | /* Return the machine subcode from the ELF e_flags header. */ | |
693 | ||
694 | static int | |
695 | elf32_mep_machine (bfd * abfd) | |
696 | { | |
697 | switch (elf_elfheader (abfd)->e_flags & EF_MEP_CPU_MASK) | |
698 | { | |
699 | default: break; | |
700 | case EF_MEP_CPU_C2: return bfd_mach_mep; | |
701 | case EF_MEP_CPU_C3: return bfd_mach_mep; | |
702 | case EF_MEP_CPU_C4: return bfd_mach_mep; | |
4d28413b | 703 | case EF_MEP_CPU_C5: return bfd_mach_mep_c5; |
d9352518 DB |
704 | case EF_MEP_CPU_H1: return bfd_mach_mep_h1; |
705 | } | |
706 | ||
707 | return bfd_mach_mep; | |
708 | } | |
709 | ||
710 | static bfd_boolean | |
711 | mep_elf_object_p (bfd * abfd) | |
712 | { | |
d9352518 DB |
713 | bfd_default_set_arch_mach (abfd, bfd_arch_mep, elf32_mep_machine (abfd)); |
714 | return TRUE; | |
715 | } | |
716 | ||
717 | static bfd_boolean | |
718 | mep_elf_section_flags (flagword * flags, const Elf_Internal_Shdr * hdr) | |
719 | { | |
720 | if (hdr->sh_flags & SHF_MEP_VLIW) | |
721 | * flags |= SEC_MEP_VLIW; | |
722 | return TRUE; | |
723 | } | |
724 | ||
725 | static bfd_boolean | |
07d6d2b8 | 726 | mep_elf_fake_sections (bfd * abfd ATTRIBUTE_UNUSED, |
d9352518 | 727 | Elf_Internal_Shdr * hdr, |
07d6d2b8 | 728 | asection * sec) |
d9352518 DB |
729 | { |
730 | if (sec->flags & SEC_MEP_VLIW) | |
731 | hdr->sh_flags |= SHF_MEP_VLIW; | |
732 | return TRUE; | |
733 | } | |
734 | ||
735 | \f | |
736 | #define ELF_ARCH bfd_arch_mep | |
737 | #define ELF_MACHINE_CODE EM_CYGNUS_MEP | |
738 | #define ELF_MAXPAGESIZE 0x1000 | |
739 | ||
6d00b590 | 740 | #define TARGET_BIG_SYM mep_elf32_vec |
d9352518 DB |
741 | #define TARGET_BIG_NAME "elf32-mep" |
742 | ||
6d00b590 | 743 | #define TARGET_LITTLE_SYM mep_elf32_le_vec |
d9352518 DB |
744 | #define TARGET_LITTLE_NAME "elf32-mep-little" |
745 | ||
746 | #define elf_info_to_howto_rel NULL | |
747 | #define elf_info_to_howto mep_info_to_howto_rela | |
748 | #define elf_backend_relocate_section mep_elf_relocate_section | |
07d6d2b8 | 749 | #define elf_backend_object_p mep_elf_object_p |
d9352518 DB |
750 | #define elf_backend_section_flags mep_elf_section_flags |
751 | #define elf_backend_fake_sections mep_elf_fake_sections | |
752 | ||
d9352518 | 753 | #define bfd_elf32_bfd_reloc_type_lookup mep_reloc_type_lookup |
0f02bbd9 | 754 | #define bfd_elf32_bfd_reloc_name_lookup mep_reloc_name_lookup |
d9352518 | 755 | #define bfd_elf32_bfd_set_private_flags mep_elf_set_private_flags |
d9352518 DB |
756 | #define bfd_elf32_bfd_merge_private_bfd_data mep_elf_merge_private_bfd_data |
757 | #define bfd_elf32_bfd_print_private_bfd_data mep_elf_print_private_bfd_data | |
758 | ||
0f02bbd9 | 759 | #define elf_backend_rela_normal 1 |
d9352518 DB |
760 | |
761 | #include "elf32-target.h" |