Commit | Line | Data |
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d9352518 | 1 | /* MeP-specific support for 32-bit ELF. |
250d07de | 2 | Copyright (C) 2001-2021 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) \ | |
487096bf | 33 | HOWTO (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. */ | |
1a211fc7 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), | |
1a211fc7 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), | |
1a211fc7 | 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), | |
1a211fc7 | 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; | |
d9352518 DB |
224 | unsigned char *byte; |
225 | bfd_vma pc; | |
226 | bfd_reloc_status_type r = bfd_reloc_ok; | |
227 | int e2, e4; | |
228 | ||
229 | if (bfd_big_endian (input_bfd)) | |
230 | { | |
231 | e2 = 0; | |
232 | e4 = 0; | |
233 | } | |
234 | else | |
235 | { | |
236 | e2 = 1; | |
237 | e4 = 3; | |
238 | } | |
239 | ||
240 | pc = (input_section->output_section->vma | |
241 | + input_section->output_offset | |
242 | + rel->r_offset); | |
243 | ||
1a211fc7 | 244 | u = relocation + rel->r_addend; |
d9352518 DB |
245 | |
246 | byte = (unsigned char *)contents + rel->r_offset; | |
247 | ||
248 | if (howto->type == R_MEP_PCREL24A2 | |
1a211fc7 | 249 | && u == 0 |
d9352518 DB |
250 | && pc >= 0x800000) |
251 | { | |
252 | /* This is an unreachable branch to an undefined weak function. | |
253 | Silently ignore it, since the opcode can't do that but should | |
254 | never be executed anyway. */ | |
255 | return bfd_reloc_ok; | |
256 | } | |
257 | ||
258 | if (howto->pc_relative) | |
1a211fc7 | 259 | u -= pc; |
d9352518 DB |
260 | |
261 | switch (howto->type) | |
262 | { | |
263 | /* MEPRELOC:APPLY */ | |
264 | /* This section generated from bfd/mep-relocs.pl from include/elf/mep.h. */ | |
265 | case R_MEP_8: /* 76543210 */ | |
266 | if (u > 255) r = bfd_reloc_overflow; | |
267 | byte[0] = (u & 0xff); | |
268 | break; | |
269 | case R_MEP_16: /* fedcba9876543210 */ | |
270 | if (u > 65535) r = bfd_reloc_overflow; | |
271 | byte[0^e2] = ((u >> 8) & 0xff); | |
272 | byte[1^e2] = (u & 0xff); | |
273 | break; | |
274 | case R_MEP_32: /* vutsrqponmlkjihgfedcba9876543210 */ | |
275 | byte[0^e4] = ((u >> 24) & 0xff); | |
276 | byte[1^e4] = ((u >> 16) & 0xff); | |
277 | byte[2^e4] = ((u >> 8) & 0xff); | |
278 | byte[3^e4] = (u & 0xff); | |
279 | break; | |
280 | case R_MEP_PCREL8A2: /* --------7654321- */ | |
1a211fc7 AM |
281 | if (u + 128 > 255) r = bfd_reloc_overflow; |
282 | byte[1^e2] = (byte[1^e2] & 0x01) | (u & 0xfe); | |
d9352518 DB |
283 | break; |
284 | case R_MEP_PCREL12A2: /* ----ba987654321- */ | |
1a211fc7 AM |
285 | if (u + 2048 > 4095) r = bfd_reloc_overflow; |
286 | byte[0^e2] = (byte[0^e2] & 0xf0) | ((u >> 8) & 0x0f); | |
287 | byte[1^e2] = (byte[1^e2] & 0x01) | (u & 0xfe); | |
d9352518 DB |
288 | break; |
289 | case R_MEP_PCREL17A2: /* ----------------gfedcba987654321 */ | |
1a211fc7 AM |
290 | if (u + 65536 > 131071) r = bfd_reloc_overflow; |
291 | byte[2^e2] = ((u >> 9) & 0xff); | |
292 | byte[3^e2] = ((u >> 1) & 0xff); | |
d9352518 DB |
293 | break; |
294 | case R_MEP_PCREL24A2: /* -----7654321----nmlkjihgfedcba98 */ | |
1a211fc7 AM |
295 | if (u + 8388608 > 16777215) r = bfd_reloc_overflow; |
296 | byte[0^e2] = (byte[0^e2] & 0xf8) | ((u >> 5) & 0x07); | |
297 | byte[1^e2] = (byte[1^e2] & 0x0f) | ((u << 3) & 0xf0); | |
298 | byte[2^e2] = ((u >> 16) & 0xff); | |
299 | byte[3^e2] = ((u >> 8) & 0xff); | |
d9352518 DB |
300 | break; |
301 | case R_MEP_PCABS24A2: /* -----7654321----nmlkjihgfedcba98 */ | |
302 | if (u > 16777215) r = bfd_reloc_overflow; | |
303 | byte[0^e2] = (byte[0^e2] & 0xf8) | ((u >> 5) & 0x07); | |
304 | byte[1^e2] = (byte[1^e2] & 0x0f) | ((u << 3) & 0xf0); | |
305 | byte[2^e2] = ((u >> 16) & 0xff); | |
306 | byte[3^e2] = ((u >> 8) & 0xff); | |
307 | break; | |
308 | case R_MEP_LOW16: /* ----------------fedcba9876543210 */ | |
309 | byte[2^e2] = ((u >> 8) & 0xff); | |
310 | byte[3^e2] = (u & 0xff); | |
311 | break; | |
312 | case R_MEP_HI16U: /* ----------------vutsrqponmlkjihg */ | |
313 | byte[2^e2] = ((u >> 24) & 0xff); | |
314 | byte[3^e2] = ((u >> 16) & 0xff); | |
315 | break; | |
316 | case R_MEP_HI16S: /* ----------------vutsrqponmlkjihg */ | |
1a211fc7 AM |
317 | u += 0x8000; |
318 | byte[2^e2] = ((u >> 24) & 0xff); | |
319 | byte[3^e2] = ((u >> 16) & 0xff); | |
d9352518 DB |
320 | break; |
321 | case R_MEP_GPREL: /* ----------------fedcba9876543210 */ | |
1a211fc7 AM |
322 | u -= mep_sdaoff_base(rel->r_offset); |
323 | if (u + 32768 > 65535) r = bfd_reloc_overflow; | |
324 | byte[2^e2] = ((u >> 8) & 0xff); | |
325 | byte[3^e2] = (u & 0xff); | |
d9352518 DB |
326 | break; |
327 | case R_MEP_TPREL: /* ----------------fedcba9876543210 */ | |
1a211fc7 AM |
328 | u -= mep_tpoff_base(rel->r_offset); |
329 | if (u + 32768 > 65535) r = bfd_reloc_overflow; | |
330 | byte[2^e2] = ((u >> 8) & 0xff); | |
331 | byte[3^e2] = (u & 0xff); | |
d9352518 DB |
332 | break; |
333 | case R_MEP_TPREL7: /* ---------6543210 */ | |
334 | u -= mep_tpoff_base(rel->r_offset); | |
335 | if (u > 127) r = bfd_reloc_overflow; | |
336 | byte[1^e2] = (byte[1^e2] & 0x80) | (u & 0x7f); | |
337 | break; | |
338 | case R_MEP_TPREL7A2: /* ---------654321- */ | |
339 | u -= mep_tpoff_base(rel->r_offset); | |
340 | if (u > 127) r = bfd_reloc_overflow; | |
341 | byte[1^e2] = (byte[1^e2] & 0x81) | (u & 0x7e); | |
342 | break; | |
343 | case R_MEP_TPREL7A4: /* ---------65432-- */ | |
344 | u -= mep_tpoff_base(rel->r_offset); | |
345 | if (u > 127) r = bfd_reloc_overflow; | |
346 | byte[1^e2] = (byte[1^e2] & 0x83) | (u & 0x7c); | |
347 | break; | |
348 | case R_MEP_UIMM24: /* --------76543210nmlkjihgfedcba98 */ | |
349 | if (u > 16777215) r = bfd_reloc_overflow; | |
350 | byte[1^e2] = (u & 0xff); | |
351 | byte[2^e2] = ((u >> 16) & 0xff); | |
352 | byte[3^e2] = ((u >> 8) & 0xff); | |
353 | break; | |
354 | case R_MEP_ADDR24A4: /* --------765432--nmlkjihgfedcba98 */ | |
355 | if (u > 16777215) r = bfd_reloc_overflow; | |
356 | byte[1^e2] = (byte[1^e2] & 0x03) | (u & 0xfc); | |
357 | byte[2^e2] = ((u >> 16) & 0xff); | |
358 | byte[3^e2] = ((u >> 8) & 0xff); | |
359 | break; | |
360 | case R_MEP_GNU_VTINHERIT: /* ---------------- */ | |
361 | break; | |
362 | case R_MEP_GNU_VTENTRY: /* ---------------- */ | |
363 | break; | |
364 | /* MEPRELOC:END */ | |
365 | default: | |
366 | abort (); | |
367 | } | |
368 | ||
369 | return r; | |
370 | } | |
371 | \f | |
372 | /* Set the howto pointer for a MEP ELF reloc. */ | |
373 | ||
f3185997 NC |
374 | static bfd_boolean |
375 | mep_info_to_howto_rela (bfd * abfd, | |
376 | arelent * cache_ptr, | |
377 | Elf_Internal_Rela * dst) | |
d9352518 DB |
378 | { |
379 | unsigned int r_type; | |
380 | ||
381 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
382 | if (r_type >= R_MEP_max) |
383 | { | |
695344c0 | 384 | /* xgettext:c-format */ |
0aa13fee AM |
385 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
386 | abfd, r_type); | |
f3185997 NC |
387 | bfd_set_error (bfd_error_bad_value); |
388 | return FALSE; | |
5860e3f8 | 389 | } |
d9352518 | 390 | cache_ptr->howto = & mep_elf_howto_table [r_type]; |
f3185997 | 391 | return TRUE; |
d9352518 | 392 | } |
d9352518 DB |
393 | \f |
394 | /* Relocate a MEP ELF section. | |
395 | There is some attempt to make this function usable for many architectures, | |
396 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
397 | if only to serve as a learning tool. | |
398 | ||
399 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
400 | to handle the relocations for a section. | |
401 | ||
402 | The relocs are always passed as Rela structures; if the section | |
403 | actually uses Rel structures, the r_addend field will always be | |
404 | zero. | |
405 | ||
406 | This function is responsible for adjusting the section contents as | |
407 | necessary, and (if using Rela relocs and generating a relocatable | |
408 | output file) adjusting the reloc addend as necessary. | |
409 | ||
410 | This function does not have to worry about setting the reloc | |
411 | address or the reloc symbol index. | |
412 | ||
413 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
414 | ||
415 | LOCAL_SECTIONS is an array giving the section in the input file | |
416 | corresponding to the st_shndx field of each local symbol. | |
417 | ||
418 | The global hash table entry for the global symbols can be found | |
419 | via elf_sym_hashes (input_bfd). | |
420 | ||
421 | When generating relocatable output, this function must handle | |
422 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
423 | going to be the section symbol corresponding to the output | |
424 | section, which means that the addend must be adjusted | |
425 | accordingly. */ | |
426 | ||
427 | static bfd_boolean | |
428 | mep_elf_relocate_section | |
07d6d2b8 | 429 | (bfd * output_bfd ATTRIBUTE_UNUSED, |
d9352518 | 430 | struct bfd_link_info * info, |
07d6d2b8 AM |
431 | bfd * input_bfd, |
432 | asection * input_section, | |
433 | bfd_byte * contents, | |
d9352518 | 434 | Elf_Internal_Rela * relocs, |
07d6d2b8 AM |
435 | Elf_Internal_Sym * local_syms, |
436 | asection ** local_sections) | |
d9352518 | 437 | { |
07d6d2b8 | 438 | Elf_Internal_Shdr * symtab_hdr; |
d9352518 | 439 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
440 | Elf_Internal_Rela * rel; |
441 | Elf_Internal_Rela * relend; | |
d9352518 DB |
442 | |
443 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
444 | sym_hashes = elf_sym_hashes (input_bfd); | |
445 | relend = relocs + input_section->reloc_count; | |
446 | ||
447 | mep_info = info; | |
448 | ||
449 | for (rel = relocs; rel < relend; rel ++) | |
450 | { | |
07d6d2b8 AM |
451 | reloc_howto_type * howto; |
452 | unsigned long r_symndx; | |
453 | Elf_Internal_Sym * sym; | |
454 | asection * sec; | |
d9352518 | 455 | struct elf_link_hash_entry * h; |
07d6d2b8 AM |
456 | bfd_vma relocation; |
457 | bfd_reloc_status_type r; | |
458 | const char * name = NULL; | |
459 | int r_type; | |
d9352518 DB |
460 | |
461 | r_type = ELF32_R_TYPE (rel->r_info); | |
d9352518 | 462 | r_symndx = ELF32_R_SYM (rel->r_info); |
d9352518 DB |
463 | howto = mep_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
464 | h = NULL; | |
465 | sym = NULL; | |
466 | sec = NULL; | |
467 | ||
468 | if (r_symndx < symtab_hdr->sh_info) | |
469 | { | |
470 | sym = local_syms + r_symndx; | |
471 | sec = local_sections [r_symndx]; | |
472 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
473 | ||
474 | name = bfd_elf_string_from_elf_section | |
475 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
fd361982 | 476 | name = name == NULL ? bfd_section_name (sec) : name; |
d9352518 DB |
477 | } |
478 | else | |
479 | { | |
62d887d4 | 480 | bfd_boolean warned, unresolved_reloc, ignored; |
d9352518 | 481 | |
0f02bbd9 AM |
482 | RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, |
483 | r_symndx, symtab_hdr, sym_hashes, | |
484 | h, sec, relocation, | |
62d887d4 | 485 | unresolved_reloc, warned, ignored); |
d9352518 DB |
486 | |
487 | name = h->root.root.string; | |
d9352518 DB |
488 | } |
489 | ||
dbaa2011 | 490 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 491 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 492 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 493 | |
0e1862bb | 494 | if (bfd_link_relocatable (info)) |
0f02bbd9 | 495 | continue; |
ab96bf03 | 496 | |
cdfeee4f AM |
497 | if (r_type == R_RELC) |
498 | r = bfd_elf_perform_complex_relocation (input_bfd, input_section, | |
499 | contents, rel, relocation); | |
500 | else | |
501 | r = mep_final_link_relocate (howto, input_bfd, input_section, | |
502 | contents, rel, relocation); | |
d9352518 DB |
503 | |
504 | if (r != bfd_reloc_ok) | |
505 | { | |
506 | const char * msg = (const char *) NULL; | |
507 | ||
508 | switch (r) | |
509 | { | |
510 | case bfd_reloc_overflow: | |
1a72702b | 511 | (*info->callbacks->reloc_overflow) |
d9352518 DB |
512 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, |
513 | input_bfd, input_section, rel->r_offset); | |
514 | break; | |
515 | ||
516 | case bfd_reloc_undefined: | |
1a72702b | 517 | (*info->callbacks->undefined_symbol) |
d9352518 DB |
518 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
519 | break; | |
520 | ||
521 | case bfd_reloc_outofrange: | |
522 | msg = _("internal error: out of range error"); | |
523 | break; | |
524 | ||
525 | case bfd_reloc_notsupported: | |
526 | msg = _("internal error: unsupported relocation error"); | |
527 | break; | |
528 | ||
529 | case bfd_reloc_dangerous: | |
530 | msg = _("internal error: dangerous relocation"); | |
531 | break; | |
532 | ||
533 | default: | |
534 | msg = _("internal error: unknown error"); | |
535 | break; | |
536 | } | |
537 | ||
538 | if (msg) | |
1a72702b AM |
539 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
540 | input_section, rel->r_offset); | |
d9352518 DB |
541 | } |
542 | } | |
543 | ||
544 | if (warn_tp) | |
545 | info->callbacks->undefined_symbol | |
546 | (info, "__tpbase", input_bfd, input_section, warn_tp-1, TRUE); | |
547 | if (warn_sda) | |
548 | info->callbacks->undefined_symbol | |
549 | (info, "__sdabase", input_bfd, input_section, warn_sda-1, TRUE); | |
550 | if (warn_sda || warn_tp) | |
551 | return FALSE; | |
552 | ||
553 | return TRUE; | |
554 | } | |
d9352518 DB |
555 | \f |
556 | /* Function to set the ELF flag bits. */ | |
557 | ||
558 | static bfd_boolean | |
559 | mep_elf_set_private_flags (bfd * abfd, | |
560 | flagword flags) | |
561 | { | |
562 | elf_elfheader (abfd)->e_flags = flags; | |
563 | elf_flags_init (abfd) = TRUE; | |
564 | return TRUE; | |
565 | } | |
566 | ||
d9352518 DB |
567 | /* Merge backend specific data from an object file to the output |
568 | object file when linking. */ | |
569 | ||
570 | static bfd_boolean | |
50e03d47 | 571 | mep_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
d9352518 | 572 | { |
50e03d47 | 573 | bfd *obfd = info->output_bfd; |
d9352518 DB |
574 | static bfd *last_ibfd = 0; |
575 | flagword old_flags, new_flags; | |
576 | flagword old_partial, new_partial; | |
577 | ||
cc643b88 | 578 | /* Check if we have the same endianness. */ |
50e03d47 | 579 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
d9352518 DB |
580 | return FALSE; |
581 | ||
582 | new_flags = elf_elfheader (ibfd)->e_flags; | |
583 | old_flags = elf_elfheader (obfd)->e_flags; | |
584 | ||
585 | #ifdef DEBUG | |
871b3ab2 | 586 | _bfd_error_handler ("%pB: old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s", |
d9352518 DB |
587 | ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no"); |
588 | #endif | |
589 | ||
590 | /* First call, no flags set. */ | |
591 | if (!elf_flags_init (obfd)) | |
592 | { | |
593 | elf_flags_init (obfd) = TRUE; | |
594 | old_flags = new_flags; | |
595 | } | |
596 | else if ((new_flags | old_flags) & EF_MEP_LIBRARY) | |
597 | { | |
598 | /* Non-library flags trump library flags. The choice doesn't really | |
599 | matter if both OLD_FLAGS and NEW_FLAGS have EF_MEP_LIBRARY set. */ | |
600 | if (old_flags & EF_MEP_LIBRARY) | |
601 | old_flags = new_flags; | |
602 | } | |
603 | else | |
604 | { | |
605 | /* Make sure they're for the same mach. Allow upgrade from the "mep" | |
606 | mach. */ | |
607 | new_partial = (new_flags & EF_MEP_CPU_MASK); | |
608 | old_partial = (old_flags & EF_MEP_CPU_MASK); | |
609 | if (new_partial == old_partial) | |
610 | ; | |
611 | else if (new_partial == EF_MEP_CPU_MEP) | |
612 | ; | |
613 | else if (old_partial == EF_MEP_CPU_MEP) | |
614 | old_flags = (old_flags & ~EF_MEP_CPU_MASK) | new_partial; | |
615 | else | |
616 | { | |
695344c0 | 617 | /* xgettext:c-format */ |
871b3ab2 | 618 | _bfd_error_handler (_("%pB and %pB are for different cores"), |
63a5468a | 619 | last_ibfd, ibfd); |
d9352518 DB |
620 | bfd_set_error (bfd_error_invalid_target); |
621 | return FALSE; | |
622 | } | |
623 | ||
624 | /* Make sure they're for the same me_module. Allow basic config to | |
625 | mix with any other. */ | |
626 | new_partial = (new_flags & EF_MEP_INDEX_MASK); | |
627 | old_partial = (old_flags & EF_MEP_INDEX_MASK); | |
628 | if (new_partial == old_partial) | |
629 | ; | |
630 | else if (new_partial == 0) | |
631 | ; | |
632 | else if (old_partial == 0) | |
633 | old_flags = (old_flags & ~EF_MEP_INDEX_MASK) | new_partial; | |
634 | else | |
635 | { | |
695344c0 | 636 | /* xgettext:c-format */ |
871b3ab2 | 637 | _bfd_error_handler (_("%pB and %pB are for different configurations"), |
63a5468a | 638 | last_ibfd, ibfd); |
d9352518 DB |
639 | bfd_set_error (bfd_error_invalid_target); |
640 | return FALSE; | |
641 | } | |
642 | } | |
643 | ||
644 | elf_elfheader (obfd)->e_flags = old_flags; | |
645 | last_ibfd = ibfd; | |
646 | return TRUE; | |
647 | } | |
648 | ||
649 | /* This will be edited by the MeP configration tool. */ | |
650 | static const char * config_names[] = | |
651 | { | |
652 | "basic" | |
653 | /* start-mepcfgtool */ | |
c1a0a41f | 654 | ,"default" |
d9352518 DB |
655 | /* end-mepcfgtool */ |
656 | }; | |
657 | ||
658 | static const char * core_names[] = | |
659 | { | |
660 | "MeP", "MeP-c2", "MeP-c3", "MeP-h1" | |
661 | }; | |
662 | ||
663 | static bfd_boolean | |
664 | mep_elf_print_private_bfd_data (bfd * abfd, void * ptr) | |
665 | { | |
666 | FILE * file = (FILE *) ptr; | |
667 | flagword flags, partial_flags; | |
668 | ||
669 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
670 | ||
671 | /* Print normal ELF private data. */ | |
672 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
673 | ||
674 | flags = elf_elfheader (abfd)->e_flags; | |
0af1713e | 675 | fprintf (file, _("private flags = 0x%lx"), (unsigned long) flags); |
d9352518 DB |
676 | |
677 | partial_flags = (flags & EF_MEP_CPU_MASK) >> 24; | |
678 | if (partial_flags < ARRAY_SIZE (core_names)) | |
679 | fprintf (file, " core: %s", core_names[(long)partial_flags]); | |
680 | ||
681 | partial_flags = flags & EF_MEP_INDEX_MASK; | |
682 | if (partial_flags < ARRAY_SIZE (config_names)) | |
683 | fprintf (file, " me_module: %s", config_names[(long)partial_flags]); | |
684 | ||
685 | fputc ('\n', file); | |
686 | ||
687 | return TRUE; | |
688 | } | |
689 | ||
690 | /* Return the machine subcode from the ELF e_flags header. */ | |
691 | ||
692 | static int | |
693 | elf32_mep_machine (bfd * abfd) | |
694 | { | |
695 | switch (elf_elfheader (abfd)->e_flags & EF_MEP_CPU_MASK) | |
696 | { | |
697 | default: break; | |
698 | case EF_MEP_CPU_C2: return bfd_mach_mep; | |
699 | case EF_MEP_CPU_C3: return bfd_mach_mep; | |
700 | case EF_MEP_CPU_C4: return bfd_mach_mep; | |
4d28413b | 701 | case EF_MEP_CPU_C5: return bfd_mach_mep_c5; |
d9352518 DB |
702 | case EF_MEP_CPU_H1: return bfd_mach_mep_h1; |
703 | } | |
704 | ||
705 | return bfd_mach_mep; | |
706 | } | |
707 | ||
708 | static bfd_boolean | |
709 | mep_elf_object_p (bfd * abfd) | |
710 | { | |
d9352518 DB |
711 | bfd_default_set_arch_mach (abfd, bfd_arch_mep, elf32_mep_machine (abfd)); |
712 | return TRUE; | |
713 | } | |
714 | ||
715 | static bfd_boolean | |
8c803a2d | 716 | mep_elf_section_flags (const Elf_Internal_Shdr *hdr) |
d9352518 DB |
717 | { |
718 | if (hdr->sh_flags & SHF_MEP_VLIW) | |
8c803a2d | 719 | hdr->bfd_section->flags |= SEC_MEP_VLIW; |
d9352518 DB |
720 | return TRUE; |
721 | } | |
722 | ||
723 | static bfd_boolean | |
07d6d2b8 | 724 | mep_elf_fake_sections (bfd * abfd ATTRIBUTE_UNUSED, |
d9352518 | 725 | Elf_Internal_Shdr * hdr, |
07d6d2b8 | 726 | asection * sec) |
d9352518 DB |
727 | { |
728 | if (sec->flags & SEC_MEP_VLIW) | |
729 | hdr->sh_flags |= SHF_MEP_VLIW; | |
730 | return TRUE; | |
731 | } | |
732 | ||
733 | \f | |
734 | #define ELF_ARCH bfd_arch_mep | |
735 | #define ELF_MACHINE_CODE EM_CYGNUS_MEP | |
736 | #define ELF_MAXPAGESIZE 0x1000 | |
737 | ||
6d00b590 | 738 | #define TARGET_BIG_SYM mep_elf32_vec |
d9352518 DB |
739 | #define TARGET_BIG_NAME "elf32-mep" |
740 | ||
6d00b590 | 741 | #define TARGET_LITTLE_SYM mep_elf32_le_vec |
d9352518 DB |
742 | #define TARGET_LITTLE_NAME "elf32-mep-little" |
743 | ||
744 | #define elf_info_to_howto_rel NULL | |
745 | #define elf_info_to_howto mep_info_to_howto_rela | |
746 | #define elf_backend_relocate_section mep_elf_relocate_section | |
07d6d2b8 | 747 | #define elf_backend_object_p mep_elf_object_p |
d9352518 DB |
748 | #define elf_backend_section_flags mep_elf_section_flags |
749 | #define elf_backend_fake_sections mep_elf_fake_sections | |
750 | ||
d9352518 | 751 | #define bfd_elf32_bfd_reloc_type_lookup mep_reloc_type_lookup |
0f02bbd9 | 752 | #define bfd_elf32_bfd_reloc_name_lookup mep_reloc_name_lookup |
d9352518 | 753 | #define bfd_elf32_bfd_set_private_flags mep_elf_set_private_flags |
d9352518 DB |
754 | #define bfd_elf32_bfd_merge_private_bfd_data mep_elf_merge_private_bfd_data |
755 | #define bfd_elf32_bfd_print_private_bfd_data mep_elf_print_private_bfd_data | |
756 | ||
0f02bbd9 | 757 | #define elf_backend_rela_normal 1 |
d9352518 DB |
758 | |
759 | #include "elf32-target.h" |