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d1bf45aa ILT |
1 | /* MIPS-specific support for 64-bit ELF |
2 | Copyright 1996 Free Software Foundation, Inc. | |
3 | Ian Lance Taylor, Cygnus Support | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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 | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
00176555 ILT |
21 | /* This file supports the 64-bit MIPS ELF ABI. |
22 | ||
23 | The MIPS 64-bit ELF ABI uses an unusual reloc format. This file | |
24 | overrides the usual ELF reloc handling, and handles reading and | |
25 | writing the relocations here. */ | |
26 | ||
d1bf45aa ILT |
27 | #include "bfd.h" |
28 | #include "sysdep.h" | |
29 | #include "libbfd.h" | |
30 | #include "bfdlink.h" | |
31 | #include "genlink.h" | |
32 | #include "elf-bfd.h" | |
33 | #include "elf/mips.h" | |
34 | ||
00176555 ILT |
35 | /* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to |
36 | use ECOFF. However, we support it anyhow for an easier changeover. */ | |
37 | #include "coff/sym.h" | |
38 | #include "coff/symconst.h" | |
39 | #include "coff/internal.h" | |
40 | #include "coff/ecoff.h" | |
41 | /* The 64 bit versions of the mdebug data structures are in alpha.h. */ | |
42 | #include "coff/alpha.h" | |
43 | #define ECOFF_64 | |
44 | #include "ecoffswap.h" | |
d1bf45aa ILT |
45 | |
46 | static void mips_elf64_swap_reloc_in | |
47 | PARAMS ((bfd *, const Elf64_Mips_External_Rel *, | |
48 | Elf64_Mips_Internal_Rel *)); | |
49 | static void mips_elf64_swap_reloca_in | |
50 | PARAMS ((bfd *, const Elf64_Mips_External_Rela *, | |
51 | Elf64_Mips_Internal_Rela *)); | |
00176555 | 52 | #if 0 |
d1bf45aa ILT |
53 | static void mips_elf64_swap_reloc_out |
54 | PARAMS ((bfd *, const Elf64_Mips_Internal_Rel *, | |
55 | Elf64_Mips_External_Rel *)); | |
00176555 | 56 | #endif |
d1bf45aa ILT |
57 | static void mips_elf64_swap_reloca_out |
58 | PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *, | |
59 | Elf64_Mips_External_Rela *)); | |
60 | static reloc_howto_type *mips_elf64_reloc_type_lookup | |
61 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
00176555 | 62 | static long mips_elf64_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
d1bf45aa ILT |
63 | static boolean mips_elf64_slurp_one_reloc_table |
64 | PARAMS ((bfd *, asection *, asymbol **, const Elf_Internal_Shdr *)); | |
65 | static boolean mips_elf64_slurp_reloc_table | |
66 | PARAMS ((bfd *, asection *, asymbol **)); | |
67 | static void mips_elf64_write_relocs PARAMS ((bfd *, asection *, PTR)); | |
68 | static boolean mips_elf64_section_from_shdr | |
69 | PARAMS ((bfd *, Elf_Internal_Shdr *, char *)); | |
70 | ||
71 | /* The relocation types. */ | |
72 | ||
73 | enum mips_elf64_reloc_type | |
74 | { | |
75 | R_MIPS_NONE = 0, | |
76 | R_MIPS_16 = 1, | |
77 | R_MIPS_32 = 2, | |
78 | R_MIPS_ADD = 2, | |
79 | R_MIPS_REL32 = 3, | |
80 | R_MIPS_REL = 3, | |
81 | R_MIPS_26 = 4, | |
82 | R_MIPS_HI16 = 5, | |
83 | R_MIPS_LO16 = 6, | |
84 | R_MIPS_GPREL16 = 7, | |
85 | R_MIPS_GPREL = 7, | |
86 | R_MIPS_LITERAL = 8, | |
87 | R_MIPS_GOT16 = 9, | |
88 | R_MIPS_GOT = 9, | |
89 | R_MIPS_PC16 = 10, | |
90 | R_MIPS_CALL16 = 11, | |
91 | R_MIPS_CALL = 11, | |
92 | R_MIPS_GPREL32 = 12, | |
93 | R_MIPS_SHIFT5 = 16, | |
94 | R_MIPS_SHIFT6 = 17, | |
95 | R_MIPS_64 = 18, | |
96 | R_MIPS_GOT_DISP = 19, | |
97 | R_MIPS_GOT_PAGE = 20, | |
98 | R_MIPS_GOT_OFST = 21, | |
99 | R_MIPS_GOT_HI16 = 22, | |
100 | R_MIPS_GOT_LO16 = 23, | |
101 | R_MIPS_SUB = 24, | |
102 | R_MIPS_INSERT_A = 25, | |
103 | R_MIPS_INSERT_B = 26, | |
104 | R_MIPS_DELETE = 27, | |
105 | R_MIPS_HIGHER = 28, | |
106 | R_MIPS_HIGHEST = 29, | |
107 | R_MIPS_CALL_HI16 = 30, | |
108 | R_MIPS_CALL_LO16 = 31, | |
109 | R_MIPS_SCN_DISP = 32, | |
110 | R_MIPS_REL16 = 33, | |
00176555 ILT |
111 | R_MIPS_ADD_IMMEDIATE = 34, |
112 | R_MIPS_PJUMP = 35, | |
113 | R_MIPS_RELGOT = 36 | |
d1bf45aa ILT |
114 | }; |
115 | ||
116 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
117 | from smaller values. Start with zero, widen, *then* decrement. */ | |
118 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
119 | ||
120 | /* FIXME: These need to be rewritten, or we need to use the versions | |
121 | in elf32-mips.c. */ | |
122 | #define mips_elf_hi16_reloc bfd_elf_generic_reloc | |
123 | #define mips_elf_lo16_reloc bfd_elf_generic_reloc | |
124 | #define mips_elf_gprel16_reloc bfd_elf_generic_reloc | |
125 | #define mips_elf_got16_reloc bfd_elf_generic_reloc | |
126 | #define mips_elf_gprel32_reloc bfd_elf_generic_reloc | |
127 | ||
128 | /* The relocation table used for SHT_REL sections. */ | |
129 | ||
130 | static reloc_howto_type mips_elf64_howto_table_rel[] = | |
131 | { | |
132 | /* No relocation. */ | |
133 | HOWTO (R_MIPS_NONE, /* type */ | |
134 | 0, /* rightshift */ | |
135 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
136 | 0, /* bitsize */ | |
137 | false, /* pc_relative */ | |
138 | 0, /* bitpos */ | |
139 | complain_overflow_dont, /* complain_on_overflow */ | |
140 | bfd_elf_generic_reloc, /* special_function */ | |
141 | "R_MIPS_NONE", /* name */ | |
142 | false, /* partial_inplace */ | |
143 | 0, /* src_mask */ | |
144 | 0, /* dst_mask */ | |
145 | false), /* pcrel_offset */ | |
146 | ||
147 | /* 16 bit relocation. */ | |
148 | HOWTO (R_MIPS_16, /* type */ | |
149 | 0, /* rightshift */ | |
150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
151 | 16, /* bitsize */ | |
152 | false, /* pc_relative */ | |
153 | 0, /* bitpos */ | |
154 | complain_overflow_bitfield, /* complain_on_overflow */ | |
155 | bfd_elf_generic_reloc, /* special_function */ | |
156 | "R_MIPS_16", /* name */ | |
157 | true, /* partial_inplace */ | |
158 | 0xffff, /* src_mask */ | |
159 | 0xffff, /* dst_mask */ | |
160 | false), /* pcrel_offset */ | |
161 | ||
162 | /* 32 bit relocation. */ | |
163 | HOWTO (R_MIPS_32, /* type */ | |
164 | 0, /* rightshift */ | |
165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
166 | 32, /* bitsize */ | |
167 | false, /* pc_relative */ | |
168 | 0, /* bitpos */ | |
169 | complain_overflow_bitfield, /* complain_on_overflow */ | |
170 | bfd_elf_generic_reloc, /* special_function */ | |
171 | "R_MIPS_32", /* name */ | |
172 | true, /* partial_inplace */ | |
173 | 0xffffffff, /* src_mask */ | |
174 | 0xffffffff, /* dst_mask */ | |
175 | false), /* pcrel_offset */ | |
176 | ||
177 | /* 32 bit symbol relative relocation. */ | |
178 | HOWTO (R_MIPS_REL32, /* type */ | |
179 | 0, /* rightshift */ | |
180 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
181 | 32, /* bitsize */ | |
182 | false, /* pc_relative */ | |
183 | 0, /* bitpos */ | |
184 | complain_overflow_bitfield, /* complain_on_overflow */ | |
185 | bfd_elf_generic_reloc, /* special_function */ | |
186 | "R_MIPS_REL32", /* name */ | |
187 | true, /* partial_inplace */ | |
188 | 0xffffffff, /* src_mask */ | |
189 | 0xffffffff, /* dst_mask */ | |
190 | false), /* pcrel_offset */ | |
191 | ||
192 | /* 26 bit branch address. */ | |
193 | HOWTO (R_MIPS_26, /* type */ | |
194 | 2, /* rightshift */ | |
195 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
196 | 26, /* bitsize */ | |
197 | false, /* pc_relative */ | |
198 | 0, /* bitpos */ | |
199 | complain_overflow_dont, /* complain_on_overflow */ | |
200 | /* This needs complex overflow | |
201 | detection, because the upper four | |
202 | bits must match the PC. */ | |
203 | bfd_elf_generic_reloc, /* special_function */ | |
204 | "R_MIPS_26", /* name */ | |
205 | true, /* partial_inplace */ | |
206 | 0x3ffffff, /* src_mask */ | |
207 | 0x3ffffff, /* dst_mask */ | |
208 | false), /* pcrel_offset */ | |
209 | ||
210 | /* High 16 bits of symbol value. */ | |
211 | HOWTO (R_MIPS_HI16, /* type */ | |
212 | 0, /* rightshift */ | |
213 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
214 | 16, /* bitsize */ | |
215 | false, /* pc_relative */ | |
216 | 0, /* bitpos */ | |
217 | complain_overflow_dont, /* complain_on_overflow */ | |
218 | mips_elf_hi16_reloc, /* special_function */ | |
219 | "R_MIPS_HI16", /* name */ | |
220 | true, /* partial_inplace */ | |
221 | 0xffff, /* src_mask */ | |
222 | 0xffff, /* dst_mask */ | |
223 | false), /* pcrel_offset */ | |
224 | ||
225 | /* Low 16 bits of symbol value. */ | |
226 | HOWTO (R_MIPS_LO16, /* type */ | |
227 | 0, /* rightshift */ | |
228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
229 | 16, /* bitsize */ | |
230 | false, /* pc_relative */ | |
231 | 0, /* bitpos */ | |
232 | complain_overflow_dont, /* complain_on_overflow */ | |
233 | mips_elf_lo16_reloc, /* special_function */ | |
234 | "R_MIPS_LO16", /* name */ | |
235 | true, /* partial_inplace */ | |
236 | 0xffff, /* src_mask */ | |
237 | 0xffff, /* dst_mask */ | |
238 | false), /* pcrel_offset */ | |
239 | ||
240 | /* GP relative reference. */ | |
241 | HOWTO (R_MIPS_GPREL16, /* type */ | |
242 | 0, /* rightshift */ | |
243 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
244 | 16, /* bitsize */ | |
245 | false, /* pc_relative */ | |
246 | 0, /* bitpos */ | |
247 | complain_overflow_signed, /* complain_on_overflow */ | |
248 | mips_elf_gprel16_reloc, /* special_function */ | |
249 | "R_MIPS_GPREL16", /* name */ | |
250 | true, /* partial_inplace */ | |
251 | 0xffff, /* src_mask */ | |
252 | 0xffff, /* dst_mask */ | |
253 | false), /* pcrel_offset */ | |
254 | ||
255 | /* Reference to literal section. */ | |
256 | HOWTO (R_MIPS_LITERAL, /* type */ | |
257 | 0, /* rightshift */ | |
258 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
259 | 16, /* bitsize */ | |
260 | false, /* pc_relative */ | |
261 | 0, /* bitpos */ | |
262 | complain_overflow_signed, /* complain_on_overflow */ | |
263 | mips_elf_gprel16_reloc, /* special_function */ | |
264 | "R_MIPS_LITERAL", /* name */ | |
265 | true, /* partial_inplace */ | |
266 | 0xffff, /* src_mask */ | |
267 | 0xffff, /* dst_mask */ | |
268 | false), /* pcrel_offset */ | |
269 | ||
270 | /* Reference to global offset table. */ | |
271 | HOWTO (R_MIPS_GOT16, /* type */ | |
272 | 0, /* rightshift */ | |
273 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
274 | 16, /* bitsize */ | |
275 | false, /* pc_relative */ | |
276 | 0, /* bitpos */ | |
277 | complain_overflow_signed, /* complain_on_overflow */ | |
278 | mips_elf_got16_reloc, /* special_function */ | |
279 | "R_MIPS_GOT16", /* name */ | |
280 | false, /* partial_inplace */ | |
281 | 0, /* src_mask */ | |
282 | 0xffff, /* dst_mask */ | |
283 | false), /* pcrel_offset */ | |
284 | ||
285 | /* 16 bit PC relative reference. */ | |
286 | HOWTO (R_MIPS_PC16, /* type */ | |
287 | 0, /* rightshift */ | |
288 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
289 | 16, /* bitsize */ | |
290 | true, /* pc_relative */ | |
291 | 0, /* bitpos */ | |
292 | complain_overflow_signed, /* complain_on_overflow */ | |
293 | bfd_elf_generic_reloc, /* special_function */ | |
294 | "R_MIPS_PC16", /* name */ | |
295 | true, /* partial_inplace */ | |
296 | 0xffff, /* src_mask */ | |
297 | 0xffff, /* dst_mask */ | |
298 | false), /* pcrel_offset */ | |
299 | ||
300 | /* 16 bit call through global offset table. */ | |
301 | /* FIXME: This is not handled correctly. */ | |
302 | HOWTO (R_MIPS_CALL16, /* type */ | |
303 | 0, /* rightshift */ | |
304 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
305 | 16, /* bitsize */ | |
306 | false, /* pc_relative */ | |
307 | 0, /* bitpos */ | |
308 | complain_overflow_signed, /* complain_on_overflow */ | |
309 | bfd_elf_generic_reloc, /* special_function */ | |
310 | "R_MIPS_CALL16", /* name */ | |
311 | false, /* partial_inplace */ | |
312 | 0, /* src_mask */ | |
313 | 0xffff, /* dst_mask */ | |
314 | false), /* pcrel_offset */ | |
315 | ||
316 | /* 32 bit GP relative reference. */ | |
317 | HOWTO (R_MIPS_GPREL32, /* type */ | |
318 | 0, /* rightshift */ | |
319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
320 | 32, /* bitsize */ | |
321 | false, /* pc_relative */ | |
322 | 0, /* bitpos */ | |
323 | complain_overflow_bitfield, /* complain_on_overflow */ | |
324 | mips_elf_gprel32_reloc, /* special_function */ | |
325 | "R_MIPS_GPREL32", /* name */ | |
326 | true, /* partial_inplace */ | |
327 | 0xffffffff, /* src_mask */ | |
328 | 0xffffffff, /* dst_mask */ | |
329 | false), /* pcrel_offset */ | |
330 | ||
331 | { 13 }, | |
332 | { 14 }, | |
333 | { 15 }, | |
334 | ||
335 | /* A 5 bit shift field. */ | |
336 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
337 | 0, /* rightshift */ | |
338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
339 | 5, /* bitsize */ | |
340 | false, /* pc_relative */ | |
341 | 6, /* bitpos */ | |
342 | complain_overflow_bitfield, /* complain_on_overflow */ | |
343 | bfd_elf_generic_reloc, /* special_function */ | |
344 | "R_MIPS_SHIFT5", /* name */ | |
345 | true, /* partial_inplace */ | |
346 | 0x000007c0, /* src_mask */ | |
347 | 0x000007c0, /* dst_mask */ | |
348 | false), /* pcrel_offset */ | |
349 | ||
350 | /* A 6 bit shift field. */ | |
351 | /* FIXME: This is not handled correctly; a special function is | |
352 | needed to put the most significant bit in the right place. */ | |
353 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 6, /* bitsize */ | |
357 | false, /* pc_relative */ | |
358 | 6, /* bitpos */ | |
359 | complain_overflow_bitfield, /* complain_on_overflow */ | |
360 | bfd_elf_generic_reloc, /* special_function */ | |
361 | "R_MIPS_SHIFT6", /* name */ | |
362 | true, /* partial_inplace */ | |
363 | 0x000007c4, /* src_mask */ | |
364 | 0x000007c4, /* dst_mask */ | |
365 | false), /* pcrel_offset */ | |
366 | ||
367 | /* 64 bit relocation. */ | |
368 | HOWTO (R_MIPS_64, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 64, /* bitsize */ | |
372 | false, /* pc_relative */ | |
373 | 0, /* bitpos */ | |
374 | complain_overflow_bitfield, /* complain_on_overflow */ | |
375 | bfd_elf_generic_reloc, /* special_function */ | |
376 | "R_MIPS_64", /* name */ | |
377 | true, /* partial_inplace */ | |
378 | MINUS_ONE, /* src_mask */ | |
379 | MINUS_ONE, /* dst_mask */ | |
380 | false), /* pcrel_offset */ | |
381 | ||
382 | /* Displacement in the global offset table. */ | |
383 | /* FIXME: Not handled correctly. */ | |
384 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 16, /* bitsize */ | |
388 | false, /* pc_relative */ | |
389 | 0, /* bitpos */ | |
390 | complain_overflow_bitfield, /* complain_on_overflow */ | |
391 | bfd_elf_generic_reloc, /* special_function */ | |
392 | "R_MIPS_GOT_DISP", /* name */ | |
393 | true, /* partial_inplace */ | |
394 | 0x0000ffff, /* src_mask */ | |
395 | 0x0000ffff, /* dst_mask */ | |
396 | false), /* pcrel_offset */ | |
397 | ||
398 | /* Displacement to page pointer in the global offset table. */ | |
399 | /* FIXME: Not handled correctly. */ | |
400 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
401 | 0, /* rightshift */ | |
402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
403 | 16, /* bitsize */ | |
404 | false, /* pc_relative */ | |
405 | 0, /* bitpos */ | |
406 | complain_overflow_bitfield, /* complain_on_overflow */ | |
407 | bfd_elf_generic_reloc, /* special_function */ | |
408 | "R_MIPS_GOT_PAGE", /* name */ | |
409 | true, /* partial_inplace */ | |
410 | 0x0000ffff, /* src_mask */ | |
411 | 0x0000ffff, /* dst_mask */ | |
412 | false), /* pcrel_offset */ | |
413 | ||
414 | /* Offset from page pointer in the global offset table. */ | |
415 | /* FIXME: Not handled correctly. */ | |
416 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
417 | 0, /* rightshift */ | |
418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
419 | 16, /* bitsize */ | |
420 | false, /* pc_relative */ | |
421 | 0, /* bitpos */ | |
422 | complain_overflow_bitfield, /* complain_on_overflow */ | |
423 | bfd_elf_generic_reloc, /* special_function */ | |
424 | "R_MIPS_GOT_OFST", /* name */ | |
425 | true, /* partial_inplace */ | |
426 | 0x0000ffff, /* src_mask */ | |
427 | 0x0000ffff, /* dst_mask */ | |
428 | false), /* pcrel_offset */ | |
429 | ||
430 | /* High 16 bits of displacement in global offset table. */ | |
431 | /* FIXME: Not handled correctly. */ | |
432 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
433 | 0, /* rightshift */ | |
434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
435 | 16, /* bitsize */ | |
436 | false, /* pc_relative */ | |
437 | 0, /* bitpos */ | |
438 | complain_overflow_dont, /* complain_on_overflow */ | |
439 | bfd_elf_generic_reloc, /* special_function */ | |
440 | "R_MIPS_GOT_HI16", /* name */ | |
441 | true, /* partial_inplace */ | |
442 | 0x0000ffff, /* src_mask */ | |
443 | 0x0000ffff, /* dst_mask */ | |
444 | false), /* pcrel_offset */ | |
445 | ||
446 | /* Low 16 bits of displacement in global offset table. */ | |
447 | /* FIXME: Not handled correctly. */ | |
448 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 16, /* bitsize */ | |
452 | false, /* pc_relative */ | |
453 | 0, /* bitpos */ | |
454 | complain_overflow_dont, /* complain_on_overflow */ | |
455 | bfd_elf_generic_reloc, /* special_function */ | |
456 | "R_MIPS_GOT_LO16", /* name */ | |
457 | true, /* partial_inplace */ | |
458 | 0x0000ffff, /* src_mask */ | |
459 | 0x0000ffff, /* dst_mask */ | |
460 | false), /* pcrel_offset */ | |
461 | ||
462 | /* 64 bit substraction. */ | |
463 | /* FIXME: Not handled correctly. */ | |
464 | HOWTO (R_MIPS_SUB, /* type */ | |
465 | 0, /* rightshift */ | |
466 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
467 | 64, /* bitsize */ | |
468 | false, /* pc_relative */ | |
469 | 0, /* bitpos */ | |
470 | complain_overflow_bitfield, /* complain_on_overflow */ | |
471 | bfd_elf_generic_reloc, /* special_function */ | |
472 | "R_MIPS_SUB", /* name */ | |
473 | true, /* partial_inplace */ | |
474 | MINUS_ONE, /* src_mask */ | |
475 | MINUS_ONE, /* dst_mask */ | |
476 | false), /* pcrel_offset */ | |
477 | ||
478 | /* Insert the addend as an instruction. */ | |
479 | /* FIXME: Not handled correctly. */ | |
480 | HOWTO (R_MIPS_INSERT_A, /* type */ | |
481 | 0, /* rightshift */ | |
482 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
483 | 0, /* bitsize */ | |
484 | false, /* pc_relative */ | |
485 | 0, /* bitpos */ | |
486 | complain_overflow_dont, /* complain_on_overflow */ | |
487 | bfd_elf_generic_reloc, /* special_function */ | |
488 | "R_MIPS_INSERT_A", /* name */ | |
489 | false, /* partial_inplace */ | |
490 | 0, /* src_mask */ | |
491 | 0, /* dst_mask */ | |
492 | false), /* pcrel_offset */ | |
493 | ||
494 | /* Insert the addend as an instruction, and change all relocations | |
495 | to refer to the old instruction at the address. */ | |
496 | /* FIXME: Not handled correctly. */ | |
497 | HOWTO (R_MIPS_INSERT_B, /* type */ | |
498 | 0, /* rightshift */ | |
499 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 0, /* bitsize */ | |
501 | false, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_dont, /* complain_on_overflow */ | |
504 | bfd_elf_generic_reloc, /* special_function */ | |
505 | "R_MIPS_INSERT_B", /* name */ | |
506 | false, /* partial_inplace */ | |
507 | 0, /* src_mask */ | |
508 | 0, /* dst_mask */ | |
509 | false), /* pcrel_offset */ | |
510 | ||
511 | /* Delete a 32 bit instruction. */ | |
512 | /* FIXME: Not handled correctly. */ | |
513 | HOWTO (R_MIPS_DELETE, /* type */ | |
514 | 0, /* rightshift */ | |
515 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
516 | 0, /* bitsize */ | |
517 | false, /* pc_relative */ | |
518 | 0, /* bitpos */ | |
519 | complain_overflow_dont, /* complain_on_overflow */ | |
520 | bfd_elf_generic_reloc, /* special_function */ | |
521 | "R_MIPS_DELETE", /* name */ | |
522 | false, /* partial_inplace */ | |
523 | 0, /* src_mask */ | |
524 | 0, /* dst_mask */ | |
525 | false), /* pcrel_offset */ | |
526 | ||
527 | /* Get the higher value of a 64 bit addend. */ | |
528 | /* FIXME: Not handled correctly. */ | |
529 | HOWTO (R_MIPS_HIGHER, /* type */ | |
530 | 0, /* rightshift */ | |
531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 16, /* bitsize */ | |
533 | false, /* pc_relative */ | |
534 | 0, /* bitpos */ | |
535 | complain_overflow_dont, /* complain_on_overflow */ | |
536 | bfd_elf_generic_reloc, /* special_function */ | |
537 | "R_MIPS_HIGHER", /* name */ | |
538 | true, /* partial_inplace */ | |
539 | 0xffff, /* src_mask */ | |
540 | 0xffff, /* dst_mask */ | |
541 | false), /* pcrel_offset */ | |
542 | ||
543 | /* Get the highest value of a 64 bit addend. */ | |
544 | /* FIXME: Not handled correctly. */ | |
545 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
546 | 0, /* rightshift */ | |
547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
548 | 16, /* bitsize */ | |
549 | false, /* pc_relative */ | |
550 | 0, /* bitpos */ | |
551 | complain_overflow_dont, /* complain_on_overflow */ | |
552 | bfd_elf_generic_reloc, /* special_function */ | |
553 | "R_MIPS_HIGHEST", /* name */ | |
554 | true, /* partial_inplace */ | |
555 | 0xffff, /* src_mask */ | |
556 | 0xffff, /* dst_mask */ | |
557 | false), /* pcrel_offset */ | |
558 | ||
559 | /* High 16 bits of displacement in global offset table. */ | |
560 | /* FIXME: Not handled correctly. */ | |
561 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
562 | 0, /* rightshift */ | |
563 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
564 | 16, /* bitsize */ | |
565 | false, /* pc_relative */ | |
566 | 0, /* bitpos */ | |
567 | complain_overflow_dont, /* complain_on_overflow */ | |
568 | bfd_elf_generic_reloc, /* special_function */ | |
569 | "R_MIPS_CALL_HI16", /* name */ | |
570 | true, /* partial_inplace */ | |
571 | 0x0000ffff, /* src_mask */ | |
572 | 0x0000ffff, /* dst_mask */ | |
573 | false), /* pcrel_offset */ | |
574 | ||
575 | /* Low 16 bits of displacement in global offset table. */ | |
576 | /* FIXME: Not handled correctly. */ | |
577 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
578 | 0, /* rightshift */ | |
579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
580 | 16, /* bitsize */ | |
581 | false, /* pc_relative */ | |
582 | 0, /* bitpos */ | |
583 | complain_overflow_dont, /* complain_on_overflow */ | |
584 | bfd_elf_generic_reloc, /* special_function */ | |
585 | "R_MIPS_CALL_LO16", /* name */ | |
586 | true, /* partial_inplace */ | |
587 | 0x0000ffff, /* src_mask */ | |
588 | 0x0000ffff, /* dst_mask */ | |
589 | false), /* pcrel_offset */ | |
590 | ||
591 | /* I'm not sure what the remaining relocs are, but they are defined | |
592 | on Irix 6. */ | |
593 | ||
594 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
595 | 0, /* rightshift */ | |
596 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 0, /* bitsize */ | |
598 | false, /* pc_relative */ | |
599 | 0, /* bitpos */ | |
600 | complain_overflow_dont, /* complain_on_overflow */ | |
601 | bfd_elf_generic_reloc, /* special_function */ | |
602 | "R_MIPS_SCN_DISP", /* name */ | |
603 | false, /* partial_inplace */ | |
604 | 0, /* src_mask */ | |
605 | 0, /* dst_mask */ | |
606 | false), /* pcrel_offset */ | |
607 | ||
608 | HOWTO (R_MIPS_REL16, /* type */ | |
609 | 0, /* rightshift */ | |
610 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
611 | 0, /* bitsize */ | |
612 | false, /* pc_relative */ | |
613 | 0, /* bitpos */ | |
614 | complain_overflow_dont, /* complain_on_overflow */ | |
615 | bfd_elf_generic_reloc, /* special_function */ | |
616 | "R_MIPS_REL16", /* name */ | |
617 | false, /* partial_inplace */ | |
618 | 0, /* src_mask */ | |
619 | 0, /* dst_mask */ | |
620 | false), /* pcrel_offset */ | |
621 | ||
622 | HOWTO (R_MIPS_ADD_IMMEDIATE, /* type */ | |
623 | 0, /* rightshift */ | |
624 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
625 | 0, /* bitsize */ | |
626 | false, /* pc_relative */ | |
627 | 0, /* bitpos */ | |
628 | complain_overflow_dont, /* complain_on_overflow */ | |
629 | bfd_elf_generic_reloc, /* special_function */ | |
630 | "R_MIPS_ADD_IMMEDIATE", /* name */ | |
631 | false, /* partial_inplace */ | |
632 | 0, /* src_mask */ | |
633 | 0, /* dst_mask */ | |
00176555 ILT |
634 | false), /* pcrel_offset */ |
635 | ||
636 | HOWTO (R_MIPS_PJUMP, /* type */ | |
637 | 0, /* rightshift */ | |
638 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 0, /* bitsize */ | |
640 | false, /* pc_relative */ | |
641 | 0, /* bitpos */ | |
642 | complain_overflow_dont, /* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
644 | "R_MIPS_PJUMP", /* name */ | |
645 | false, /* partial_inplace */ | |
646 | 0, /* src_mask */ | |
647 | 0, /* dst_mask */ | |
648 | false), /* pcrel_offset */ | |
649 | ||
650 | HOWTO (R_MIPS_RELGOT, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 0, /* bitsize */ | |
654 | false, /* pc_relative */ | |
655 | 0, /* bitpos */ | |
656 | complain_overflow_dont, /* complain_on_overflow */ | |
657 | bfd_elf_generic_reloc, /* special_function */ | |
658 | "R_MIPS_RELGOT", /* name */ | |
659 | false, /* partial_inplace */ | |
660 | 0, /* src_mask */ | |
661 | 0, /* dst_mask */ | |
d1bf45aa ILT |
662 | false) /* pcrel_offset */ |
663 | }; | |
664 | ||
665 | /* The relocation table used for SHT_RELA sections. */ | |
666 | ||
667 | static reloc_howto_type mips_elf64_howto_table_rela[] = | |
668 | { | |
669 | /* No relocation. */ | |
670 | HOWTO (R_MIPS_NONE, /* type */ | |
671 | 0, /* rightshift */ | |
672 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
673 | 0, /* bitsize */ | |
674 | false, /* pc_relative */ | |
675 | 0, /* bitpos */ | |
676 | complain_overflow_dont, /* complain_on_overflow */ | |
677 | bfd_elf_generic_reloc, /* special_function */ | |
678 | "R_MIPS_NONE", /* name */ | |
679 | false, /* partial_inplace */ | |
680 | 0, /* src_mask */ | |
681 | 0, /* dst_mask */ | |
682 | false), /* pcrel_offset */ | |
683 | ||
684 | /* 16 bit relocation. */ | |
685 | HOWTO (R_MIPS_16, /* type */ | |
686 | 0, /* rightshift */ | |
687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
688 | 16, /* bitsize */ | |
689 | false, /* pc_relative */ | |
690 | 0, /* bitpos */ | |
691 | complain_overflow_bitfield, /* complain_on_overflow */ | |
692 | bfd_elf_generic_reloc, /* special_function */ | |
693 | "R_MIPS_16", /* name */ | |
694 | true, /* partial_inplace */ | |
695 | 0, /* src_mask */ | |
696 | 0xffff, /* dst_mask */ | |
697 | false), /* pcrel_offset */ | |
698 | ||
699 | /* 32 bit relocation. */ | |
700 | HOWTO (R_MIPS_32, /* type */ | |
701 | 0, /* rightshift */ | |
702 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
703 | 32, /* bitsize */ | |
704 | false, /* pc_relative */ | |
705 | 0, /* bitpos */ | |
706 | complain_overflow_bitfield, /* complain_on_overflow */ | |
707 | bfd_elf_generic_reloc, /* special_function */ | |
708 | "R_MIPS_32", /* name */ | |
709 | true, /* partial_inplace */ | |
710 | 0, /* src_mask */ | |
711 | 0xffffffff, /* dst_mask */ | |
712 | false), /* pcrel_offset */ | |
713 | ||
714 | /* 32 bit symbol relative relocation. */ | |
715 | HOWTO (R_MIPS_REL32, /* type */ | |
716 | 0, /* rightshift */ | |
717 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
718 | 32, /* bitsize */ | |
719 | false, /* pc_relative */ | |
720 | 0, /* bitpos */ | |
721 | complain_overflow_bitfield, /* complain_on_overflow */ | |
722 | bfd_elf_generic_reloc, /* special_function */ | |
723 | "R_MIPS_REL32", /* name */ | |
724 | true, /* partial_inplace */ | |
725 | 0, /* src_mask */ | |
726 | 0xffffffff, /* dst_mask */ | |
727 | false), /* pcrel_offset */ | |
728 | ||
729 | /* 26 bit branch address. */ | |
730 | HOWTO (R_MIPS_26, /* type */ | |
731 | 2, /* rightshift */ | |
732 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
733 | 26, /* bitsize */ | |
734 | false, /* pc_relative */ | |
735 | 0, /* bitpos */ | |
736 | complain_overflow_dont, /* complain_on_overflow */ | |
737 | /* This needs complex overflow | |
738 | detection, because the upper four | |
739 | bits must match the PC. */ | |
740 | bfd_elf_generic_reloc, /* special_function */ | |
741 | "R_MIPS_26", /* name */ | |
742 | true, /* partial_inplace */ | |
743 | 0, /* src_mask */ | |
744 | 0x3ffffff, /* dst_mask */ | |
745 | false), /* pcrel_offset */ | |
746 | ||
747 | /* High 16 bits of symbol value. */ | |
748 | HOWTO (R_MIPS_HI16, /* type */ | |
749 | 0, /* rightshift */ | |
750 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 16, /* bitsize */ | |
752 | false, /* pc_relative */ | |
753 | 0, /* bitpos */ | |
754 | complain_overflow_dont, /* complain_on_overflow */ | |
755 | bfd_elf_generic_reloc, /* special_function */ | |
756 | "R_MIPS_HI16", /* name */ | |
757 | true, /* partial_inplace */ | |
758 | 0, /* src_mask */ | |
759 | 0xffff, /* dst_mask */ | |
760 | false), /* pcrel_offset */ | |
761 | ||
762 | /* Low 16 bits of symbol value. */ | |
763 | HOWTO (R_MIPS_LO16, /* type */ | |
764 | 0, /* rightshift */ | |
765 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
766 | 16, /* bitsize */ | |
767 | false, /* pc_relative */ | |
768 | 0, /* bitpos */ | |
769 | complain_overflow_dont, /* complain_on_overflow */ | |
770 | bfd_elf_generic_reloc, /* special_function */ | |
771 | "R_MIPS_LO16", /* name */ | |
772 | true, /* partial_inplace */ | |
773 | 0, /* src_mask */ | |
774 | 0xffff, /* dst_mask */ | |
775 | false), /* pcrel_offset */ | |
776 | ||
777 | /* GP relative reference. */ | |
778 | HOWTO (R_MIPS_GPREL16, /* type */ | |
779 | 0, /* rightshift */ | |
780 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
781 | 16, /* bitsize */ | |
782 | false, /* pc_relative */ | |
783 | 0, /* bitpos */ | |
784 | complain_overflow_signed, /* complain_on_overflow */ | |
785 | mips_elf_gprel16_reloc, /* special_function */ | |
786 | "R_MIPS_GPREL16", /* name */ | |
787 | true, /* partial_inplace */ | |
788 | 0, /* src_mask */ | |
789 | 0xffff, /* dst_mask */ | |
790 | false), /* pcrel_offset */ | |
791 | ||
792 | /* Reference to literal section. */ | |
793 | HOWTO (R_MIPS_LITERAL, /* type */ | |
794 | 0, /* rightshift */ | |
795 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 16, /* bitsize */ | |
797 | false, /* pc_relative */ | |
798 | 0, /* bitpos */ | |
799 | complain_overflow_signed, /* complain_on_overflow */ | |
800 | mips_elf_gprel16_reloc, /* special_function */ | |
801 | "R_MIPS_LITERAL", /* name */ | |
802 | true, /* partial_inplace */ | |
803 | 0, /* src_mask */ | |
804 | 0xffff, /* dst_mask */ | |
805 | false), /* pcrel_offset */ | |
806 | ||
807 | /* Reference to global offset table. */ | |
808 | HOWTO (R_MIPS_GOT16, /* type */ | |
809 | 0, /* rightshift */ | |
810 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
811 | 16, /* bitsize */ | |
812 | false, /* pc_relative */ | |
813 | 0, /* bitpos */ | |
814 | complain_overflow_signed, /* complain_on_overflow */ | |
815 | mips_elf_got16_reloc, /* special_function */ | |
816 | "R_MIPS_GOT16", /* name */ | |
817 | false, /* partial_inplace */ | |
818 | 0, /* src_mask */ | |
819 | 0xffff, /* dst_mask */ | |
820 | false), /* pcrel_offset */ | |
821 | ||
822 | /* 16 bit PC relative reference. */ | |
823 | HOWTO (R_MIPS_PC16, /* type */ | |
824 | 0, /* rightshift */ | |
825 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
826 | 16, /* bitsize */ | |
827 | true, /* pc_relative */ | |
828 | 0, /* bitpos */ | |
829 | complain_overflow_signed, /* complain_on_overflow */ | |
830 | bfd_elf_generic_reloc, /* special_function */ | |
831 | "R_MIPS_PC16", /* name */ | |
832 | true, /* partial_inplace */ | |
833 | 0, /* src_mask */ | |
834 | 0xffff, /* dst_mask */ | |
835 | false), /* pcrel_offset */ | |
836 | ||
837 | /* 16 bit call through global offset table. */ | |
838 | /* FIXME: This is not handled correctly. */ | |
839 | HOWTO (R_MIPS_CALL16, /* type */ | |
840 | 0, /* rightshift */ | |
841 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
842 | 16, /* bitsize */ | |
843 | false, /* pc_relative */ | |
844 | 0, /* bitpos */ | |
845 | complain_overflow_signed, /* complain_on_overflow */ | |
846 | bfd_elf_generic_reloc, /* special_function */ | |
847 | "R_MIPS_CALL16", /* name */ | |
848 | false, /* partial_inplace */ | |
849 | 0, /* src_mask */ | |
850 | 0xffff, /* dst_mask */ | |
851 | false), /* pcrel_offset */ | |
852 | ||
853 | /* 32 bit GP relative reference. */ | |
854 | HOWTO (R_MIPS_GPREL32, /* type */ | |
855 | 0, /* rightshift */ | |
856 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
857 | 32, /* bitsize */ | |
858 | false, /* pc_relative */ | |
859 | 0, /* bitpos */ | |
860 | complain_overflow_bitfield, /* complain_on_overflow */ | |
861 | mips_elf_gprel32_reloc, /* special_function */ | |
862 | "R_MIPS_GPREL32", /* name */ | |
863 | true, /* partial_inplace */ | |
864 | 0, /* src_mask */ | |
865 | 0xffffffff, /* dst_mask */ | |
866 | false), /* pcrel_offset */ | |
867 | ||
868 | { 13 }, | |
869 | { 14 }, | |
870 | { 15 }, | |
871 | ||
872 | /* A 5 bit shift field. */ | |
873 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
874 | 0, /* rightshift */ | |
875 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
876 | 5, /* bitsize */ | |
877 | false, /* pc_relative */ | |
878 | 6, /* bitpos */ | |
879 | complain_overflow_bitfield, /* complain_on_overflow */ | |
880 | bfd_elf_generic_reloc, /* special_function */ | |
881 | "R_MIPS_SHIFT5", /* name */ | |
882 | true, /* partial_inplace */ | |
883 | 0, /* src_mask */ | |
884 | 0x000007c0, /* dst_mask */ | |
885 | false), /* pcrel_offset */ | |
886 | ||
887 | /* A 6 bit shift field. */ | |
888 | /* FIXME: This is not handled correctly; a special function is | |
889 | needed to put the most significant bit in the right place. */ | |
890 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 6, /* bitsize */ | |
894 | false, /* pc_relative */ | |
895 | 6, /* bitpos */ | |
896 | complain_overflow_bitfield, /* complain_on_overflow */ | |
897 | bfd_elf_generic_reloc, /* special_function */ | |
898 | "R_MIPS_SHIFT6", /* name */ | |
899 | true, /* partial_inplace */ | |
900 | 0, /* src_mask */ | |
901 | 0x000007c4, /* dst_mask */ | |
902 | false), /* pcrel_offset */ | |
903 | ||
904 | /* 64 bit relocation. */ | |
905 | HOWTO (R_MIPS_64, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
908 | 64, /* bitsize */ | |
909 | false, /* pc_relative */ | |
910 | 0, /* bitpos */ | |
911 | complain_overflow_bitfield, /* complain_on_overflow */ | |
912 | bfd_elf_generic_reloc, /* special_function */ | |
913 | "R_MIPS_64", /* name */ | |
914 | true, /* partial_inplace */ | |
915 | 0, /* src_mask */ | |
916 | MINUS_ONE, /* dst_mask */ | |
917 | false), /* pcrel_offset */ | |
918 | ||
919 | /* Displacement in the global offset table. */ | |
920 | /* FIXME: Not handled correctly. */ | |
921 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
922 | 0, /* rightshift */ | |
923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 16, /* bitsize */ | |
925 | false, /* pc_relative */ | |
926 | 0, /* bitpos */ | |
927 | complain_overflow_bitfield, /* complain_on_overflow */ | |
928 | bfd_elf_generic_reloc, /* special_function */ | |
929 | "R_MIPS_GOT_DISP", /* name */ | |
930 | true, /* partial_inplace */ | |
931 | 0, /* src_mask */ | |
932 | 0x0000ffff, /* dst_mask */ | |
933 | false), /* pcrel_offset */ | |
934 | ||
935 | /* Displacement to page pointer in the global offset table. */ | |
936 | /* FIXME: Not handled correctly. */ | |
937 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
938 | 0, /* rightshift */ | |
939 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
940 | 16, /* bitsize */ | |
941 | false, /* pc_relative */ | |
942 | 0, /* bitpos */ | |
943 | complain_overflow_bitfield, /* complain_on_overflow */ | |
944 | bfd_elf_generic_reloc, /* special_function */ | |
945 | "R_MIPS_GOT_PAGE", /* name */ | |
946 | true, /* partial_inplace */ | |
947 | 0, /* src_mask */ | |
948 | 0x0000ffff, /* dst_mask */ | |
949 | false), /* pcrel_offset */ | |
950 | ||
951 | /* Offset from page pointer in the global offset table. */ | |
952 | /* FIXME: Not handled correctly. */ | |
953 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
954 | 0, /* rightshift */ | |
955 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
956 | 16, /* bitsize */ | |
957 | false, /* pc_relative */ | |
958 | 0, /* bitpos */ | |
959 | complain_overflow_bitfield, /* complain_on_overflow */ | |
960 | bfd_elf_generic_reloc, /* special_function */ | |
961 | "R_MIPS_GOT_OFST", /* name */ | |
962 | true, /* partial_inplace */ | |
963 | 0, /* src_mask */ | |
964 | 0x0000ffff, /* dst_mask */ | |
965 | false), /* pcrel_offset */ | |
966 | ||
967 | /* High 16 bits of displacement in global offset table. */ | |
968 | /* FIXME: Not handled correctly. */ | |
969 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
970 | 0, /* rightshift */ | |
971 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
972 | 16, /* bitsize */ | |
973 | false, /* pc_relative */ | |
974 | 0, /* bitpos */ | |
975 | complain_overflow_dont, /* complain_on_overflow */ | |
976 | bfd_elf_generic_reloc, /* special_function */ | |
977 | "R_MIPS_GOT_HI16", /* name */ | |
978 | true, /* partial_inplace */ | |
979 | 0, /* src_mask */ | |
980 | 0x0000ffff, /* dst_mask */ | |
981 | false), /* pcrel_offset */ | |
982 | ||
983 | /* Low 16 bits of displacement in global offset table. */ | |
984 | /* FIXME: Not handled correctly. */ | |
985 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
986 | 0, /* rightshift */ | |
987 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
988 | 16, /* bitsize */ | |
989 | false, /* pc_relative */ | |
990 | 0, /* bitpos */ | |
991 | complain_overflow_dont, /* complain_on_overflow */ | |
992 | bfd_elf_generic_reloc, /* special_function */ | |
993 | "R_MIPS_GOT_LO16", /* name */ | |
994 | true, /* partial_inplace */ | |
995 | 0, /* src_mask */ | |
996 | 0x0000ffff, /* dst_mask */ | |
997 | false), /* pcrel_offset */ | |
998 | ||
999 | /* 64 bit substraction. */ | |
1000 | /* FIXME: Not handled correctly. */ | |
1001 | HOWTO (R_MIPS_SUB, /* type */ | |
1002 | 0, /* rightshift */ | |
1003 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1004 | 64, /* bitsize */ | |
1005 | false, /* pc_relative */ | |
1006 | 0, /* bitpos */ | |
1007 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1008 | bfd_elf_generic_reloc, /* special_function */ | |
1009 | "R_MIPS_SUB", /* name */ | |
1010 | true, /* partial_inplace */ | |
1011 | 0, /* src_mask */ | |
1012 | MINUS_ONE, /* dst_mask */ | |
1013 | false), /* pcrel_offset */ | |
1014 | ||
1015 | /* Insert the addend as an instruction. */ | |
1016 | /* FIXME: Not handled correctly. */ | |
1017 | HOWTO (R_MIPS_INSERT_A, /* type */ | |
1018 | 0, /* rightshift */ | |
1019 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1020 | 0, /* bitsize */ | |
1021 | false, /* pc_relative */ | |
1022 | 0, /* bitpos */ | |
1023 | complain_overflow_dont, /* complain_on_overflow */ | |
1024 | bfd_elf_generic_reloc, /* special_function */ | |
1025 | "R_MIPS_INSERT_A", /* name */ | |
1026 | false, /* partial_inplace */ | |
1027 | 0, /* src_mask */ | |
1028 | 0, /* dst_mask */ | |
1029 | false), /* pcrel_offset */ | |
1030 | ||
1031 | /* Insert the addend as an instruction, and change all relocations | |
1032 | to refer to the old instruction at the address. */ | |
1033 | /* FIXME: Not handled correctly. */ | |
1034 | HOWTO (R_MIPS_INSERT_B, /* type */ | |
1035 | 0, /* rightshift */ | |
1036 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1037 | 0, /* bitsize */ | |
1038 | false, /* pc_relative */ | |
1039 | 0, /* bitpos */ | |
1040 | complain_overflow_dont, /* complain_on_overflow */ | |
1041 | bfd_elf_generic_reloc, /* special_function */ | |
1042 | "R_MIPS_INSERT_B", /* name */ | |
1043 | false, /* partial_inplace */ | |
1044 | 0, /* src_mask */ | |
1045 | 0, /* dst_mask */ | |
1046 | false), /* pcrel_offset */ | |
1047 | ||
1048 | /* Delete a 32 bit instruction. */ | |
1049 | /* FIXME: Not handled correctly. */ | |
1050 | HOWTO (R_MIPS_DELETE, /* type */ | |
1051 | 0, /* rightshift */ | |
1052 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1053 | 0, /* bitsize */ | |
1054 | false, /* pc_relative */ | |
1055 | 0, /* bitpos */ | |
1056 | complain_overflow_dont, /* complain_on_overflow */ | |
1057 | bfd_elf_generic_reloc, /* special_function */ | |
1058 | "R_MIPS_DELETE", /* name */ | |
1059 | false, /* partial_inplace */ | |
1060 | 0, /* src_mask */ | |
1061 | 0, /* dst_mask */ | |
1062 | false), /* pcrel_offset */ | |
1063 | ||
1064 | /* Get the higher value of a 64 bit addend. */ | |
1065 | /* FIXME: Not handled correctly. */ | |
1066 | HOWTO (R_MIPS_HIGHER, /* type */ | |
1067 | 0, /* rightshift */ | |
1068 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1069 | 16, /* bitsize */ | |
1070 | false, /* pc_relative */ | |
1071 | 0, /* bitpos */ | |
1072 | complain_overflow_dont, /* complain_on_overflow */ | |
1073 | bfd_elf_generic_reloc, /* special_function */ | |
1074 | "R_MIPS_HIGHER", /* name */ | |
1075 | true, /* partial_inplace */ | |
1076 | 0, /* src_mask */ | |
1077 | 0xffff, /* dst_mask */ | |
1078 | false), /* pcrel_offset */ | |
1079 | ||
1080 | /* Get the highest value of a 64 bit addend. */ | |
1081 | /* FIXME: Not handled correctly. */ | |
1082 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
1083 | 0, /* rightshift */ | |
1084 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1085 | 16, /* bitsize */ | |
1086 | false, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
1088 | complain_overflow_dont, /* complain_on_overflow */ | |
1089 | bfd_elf_generic_reloc, /* special_function */ | |
1090 | "R_MIPS_HIGHEST", /* name */ | |
1091 | true, /* partial_inplace */ | |
1092 | 0, /* src_mask */ | |
1093 | 0xffff, /* dst_mask */ | |
1094 | false), /* pcrel_offset */ | |
1095 | ||
1096 | /* High 16 bits of displacement in global offset table. */ | |
1097 | /* FIXME: Not handled correctly. */ | |
1098 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
1099 | 0, /* rightshift */ | |
1100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1101 | 16, /* bitsize */ | |
1102 | false, /* pc_relative */ | |
1103 | 0, /* bitpos */ | |
1104 | complain_overflow_dont, /* complain_on_overflow */ | |
1105 | bfd_elf_generic_reloc, /* special_function */ | |
1106 | "R_MIPS_CALL_HI16", /* name */ | |
1107 | true, /* partial_inplace */ | |
1108 | 0, /* src_mask */ | |
1109 | 0x0000ffff, /* dst_mask */ | |
1110 | false), /* pcrel_offset */ | |
1111 | ||
1112 | /* Low 16 bits of displacement in global offset table. */ | |
1113 | /* FIXME: Not handled correctly. */ | |
1114 | HOWTO (R_MIPS_CALL_LO16, /* 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 | bfd_elf_generic_reloc, /* special_function */ | |
1122 | "R_MIPS_CALL_LO16", /* name */ | |
1123 | true, /* partial_inplace */ | |
1124 | 0, /* src_mask */ | |
1125 | 0x0000ffff, /* dst_mask */ | |
1126 | false), /* pcrel_offset */ | |
1127 | ||
1128 | /* I'm not sure what the remaining relocs are, but they are defined | |
1129 | on Irix 6. */ | |
1130 | ||
1131 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 0, /* bitsize */ | |
1135 | false, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_dont, /* complain_on_overflow */ | |
1138 | bfd_elf_generic_reloc, /* special_function */ | |
1139 | "R_MIPS_SCN_DISP", /* name */ | |
1140 | false, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0, /* dst_mask */ | |
1143 | false), /* pcrel_offset */ | |
1144 | ||
1145 | HOWTO (R_MIPS_REL16, /* type */ | |
1146 | 0, /* rightshift */ | |
1147 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1148 | 0, /* bitsize */ | |
1149 | false, /* pc_relative */ | |
1150 | 0, /* bitpos */ | |
1151 | complain_overflow_dont, /* complain_on_overflow */ | |
1152 | bfd_elf_generic_reloc, /* special_function */ | |
1153 | "R_MIPS_REL16", /* name */ | |
1154 | false, /* partial_inplace */ | |
1155 | 0, /* src_mask */ | |
1156 | 0, /* dst_mask */ | |
1157 | false), /* pcrel_offset */ | |
1158 | ||
1159 | HOWTO (R_MIPS_ADD_IMMEDIATE, /* type */ | |
1160 | 0, /* rightshift */ | |
1161 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1162 | 0, /* bitsize */ | |
1163 | false, /* pc_relative */ | |
1164 | 0, /* bitpos */ | |
1165 | complain_overflow_dont, /* complain_on_overflow */ | |
1166 | bfd_elf_generic_reloc, /* special_function */ | |
1167 | "R_MIPS_ADD_IMMEDIATE", /* name */ | |
1168 | false, /* partial_inplace */ | |
1169 | 0, /* src_mask */ | |
1170 | 0, /* dst_mask */ | |
00176555 ILT |
1171 | false), /* pcrel_offset */ |
1172 | ||
1173 | HOWTO (R_MIPS_PJUMP, /* type */ | |
1174 | 0, /* rightshift */ | |
1175 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1176 | 0, /* bitsize */ | |
1177 | false, /* pc_relative */ | |
1178 | 0, /* bitpos */ | |
1179 | complain_overflow_dont, /* complain_on_overflow */ | |
1180 | bfd_elf_generic_reloc, /* special_function */ | |
1181 | "R_MIPS_PJUMP", /* name */ | |
1182 | false, /* partial_inplace */ | |
1183 | 0, /* src_mask */ | |
1184 | 0, /* dst_mask */ | |
1185 | false), /* pcrel_offset */ | |
1186 | ||
1187 | HOWTO (R_MIPS_RELGOT, /* type */ | |
1188 | 0, /* rightshift */ | |
1189 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 0, /* bitsize */ | |
1191 | false, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
1193 | complain_overflow_dont, /* complain_on_overflow */ | |
1194 | bfd_elf_generic_reloc, /* special_function */ | |
1195 | "R_MIPS_RELGOT", /* name */ | |
1196 | false, /* partial_inplace */ | |
1197 | 0, /* src_mask */ | |
1198 | 0, /* dst_mask */ | |
d1bf45aa ILT |
1199 | false) /* pcrel_offset */ |
1200 | }; | |
1201 | ||
1202 | /* Swap in a MIPS 64-bit Rel reloc. */ | |
1203 | ||
1204 | static void | |
1205 | mips_elf64_swap_reloc_in (abfd, src, dst) | |
1206 | bfd *abfd; | |
1207 | const Elf64_Mips_External_Rel *src; | |
1208 | Elf64_Mips_Internal_Rel *dst; | |
1209 | { | |
1210 | dst->r_offset = bfd_h_get_64 (abfd, (bfd_byte *) src->r_offset); | |
1211 | dst->r_sym = bfd_h_get_32 (abfd, (bfd_byte *) src->r_sym); | |
1212 | dst->r_ssym = bfd_h_get_8 (abfd, (bfd_byte *) src->r_ssym); | |
1213 | dst->r_type3 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type3); | |
1214 | dst->r_type2 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type2); | |
1215 | dst->r_type = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type); | |
1216 | } | |
1217 | ||
1218 | /* Swap in a MIPS 64-bit Rela reloc. */ | |
1219 | ||
1220 | static void | |
1221 | mips_elf64_swap_reloca_in (abfd, src, dst) | |
1222 | bfd *abfd; | |
1223 | const Elf64_Mips_External_Rela *src; | |
1224 | Elf64_Mips_Internal_Rela *dst; | |
1225 | { | |
1226 | dst->r_offset = bfd_h_get_64 (abfd, (bfd_byte *) src->r_offset); | |
1227 | dst->r_sym = bfd_h_get_32 (abfd, (bfd_byte *) src->r_sym); | |
1228 | dst->r_ssym = bfd_h_get_8 (abfd, (bfd_byte *) src->r_ssym); | |
1229 | dst->r_type3 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type3); | |
1230 | dst->r_type2 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type2); | |
1231 | dst->r_type = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type); | |
1232 | dst->r_addend = bfd_h_get_64 (abfd, (bfd_byte *) src->r_addend); | |
1233 | } | |
1234 | ||
00176555 ILT |
1235 | #if 0 |
1236 | ||
1237 | /* This is not currently used. */ | |
1238 | ||
d1bf45aa ILT |
1239 | /* Swap out a MIPS 64-bit Rel reloc. */ |
1240 | ||
1241 | static void | |
1242 | mips_elf64_swap_reloc_out (abfd, src, dst) | |
1243 | bfd *abfd; | |
1244 | const Elf64_Mips_Internal_Rel *src; | |
1245 | Elf64_Mips_External_Rel *dst; | |
1246 | { | |
1247 | bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset); | |
1248 | bfd_h_put_32 (abfd, src->r_sym, (bfd_byte *) dst->r_sym); | |
1249 | bfd_h_put_8 (abfd, src->r_ssym, (bfd_byte *) dst->r_ssym); | |
1250 | bfd_h_put_8 (abfd, src->r_type3, (bfd_byte *) dst->r_type3); | |
1251 | bfd_h_put_8 (abfd, src->r_type2, (bfd_byte *) dst->r_type2); | |
1252 | bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type); | |
1253 | } | |
1254 | ||
00176555 ILT |
1255 | #endif /* 0 */ |
1256 | ||
d1bf45aa ILT |
1257 | /* Swap out a MIPS 64-bit Rela reloc. */ |
1258 | ||
1259 | static void | |
1260 | mips_elf64_swap_reloca_out (abfd, src, dst) | |
1261 | bfd *abfd; | |
1262 | const Elf64_Mips_Internal_Rela *src; | |
1263 | Elf64_Mips_External_Rela *dst; | |
1264 | { | |
1265 | bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset); | |
1266 | bfd_h_put_32 (abfd, src->r_sym, (bfd_byte *) dst->r_sym); | |
1267 | bfd_h_put_8 (abfd, src->r_ssym, (bfd_byte *) dst->r_ssym); | |
1268 | bfd_h_put_8 (abfd, src->r_type3, (bfd_byte *) dst->r_type3); | |
1269 | bfd_h_put_8 (abfd, src->r_type2, (bfd_byte *) dst->r_type2); | |
1270 | bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type); | |
1271 | bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset); | |
1272 | } | |
1273 | ||
1274 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ | |
1275 | ||
1276 | struct elf_reloc_map | |
1277 | { | |
1278 | bfd_reloc_code_real_type bfd_reloc_val; | |
1279 | enum mips_elf64_reloc_type elf_reloc_val; | |
1280 | }; | |
1281 | ||
1282 | static CONST struct elf_reloc_map mips_reloc_map[] = | |
1283 | { | |
1284 | { BFD_RELOC_NONE, R_MIPS_NONE, }, | |
1285 | { BFD_RELOC_16, R_MIPS_16 }, | |
1286 | { BFD_RELOC_32, R_MIPS_32 }, | |
1287 | { BFD_RELOC_64, R_MIPS_64 }, | |
1288 | { BFD_RELOC_CTOR, R_MIPS_64 }, | |
1289 | { BFD_RELOC_32_PCREL, R_MIPS_REL32 }, | |
1290 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
1291 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1292 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1293 | { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 }, | |
1294 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1295 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
1296 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, | |
1297 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, | |
1298 | { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }, | |
1299 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
1300 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
1301 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
1302 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 } | |
1303 | }; | |
1304 | ||
1305 | /* Given a BFD reloc type, return a howto structure. */ | |
1306 | ||
1307 | static reloc_howto_type * | |
1308 | mips_elf64_reloc_type_lookup (abfd, code) | |
1309 | bfd *abfd; | |
1310 | bfd_reloc_code_real_type code; | |
1311 | { | |
1312 | unsigned int i; | |
1313 | ||
1314 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
1315 | { | |
1316 | if (mips_reloc_map[i].bfd_reloc_val == code) | |
1317 | { | |
1318 | int v; | |
1319 | ||
1320 | v = (int) mips_reloc_map[i].elf_reloc_val; | |
1321 | return &mips_elf64_howto_table_rel[v]; | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | return NULL; | |
1326 | } | |
1327 | ||
00176555 ILT |
1328 | /* Since each entry in an SHT_REL or SHT_RELA section can represent up |
1329 | to three relocs, we must tell the user to allocate more space. */ | |
1330 | ||
1331 | static long | |
1332 | mips_elf64_get_reloc_upper_bound (abfd, sec) | |
1333 | bfd *abfd; | |
1334 | asection *sec; | |
1335 | { | |
1336 | return (sec->reloc_count * 3 + 1) * sizeof (arelent *); | |
1337 | } | |
1338 | ||
d1bf45aa ILT |
1339 | /* Read the relocations from one reloc section. */ |
1340 | ||
1341 | static boolean | |
1342 | mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, rel_hdr) | |
1343 | bfd *abfd; | |
1344 | asection *asect; | |
1345 | asymbol **symbols; | |
1346 | const Elf_Internal_Shdr *rel_hdr; | |
1347 | { | |
1348 | PTR allocated = NULL; | |
1349 | bfd_byte *native_relocs; | |
1350 | arelent *relents; | |
1351 | arelent *relent; | |
1352 | unsigned int count; | |
1353 | unsigned int i; | |
1354 | int entsize; | |
1355 | reloc_howto_type *howto_table; | |
1356 | ||
1357 | allocated = (PTR) bfd_malloc (rel_hdr->sh_size); | |
1358 | if (allocated == NULL) | |
1359 | goto error_return; | |
1360 | ||
1361 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 | |
1362 | || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)) | |
1363 | goto error_return; | |
1364 | ||
1365 | native_relocs = (bfd_byte *) allocated; | |
1366 | ||
1367 | relents = asect->relocation + asect->reloc_count; | |
1368 | ||
1369 | entsize = rel_hdr->sh_entsize; | |
1370 | BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel) | |
1371 | || entsize == sizeof (Elf64_Mips_External_Rela)); | |
1372 | ||
1373 | count = rel_hdr->sh_size / entsize; | |
1374 | ||
1375 | if (entsize == sizeof (Elf64_Mips_External_Rel)) | |
1376 | howto_table = mips_elf64_howto_table_rel; | |
1377 | else | |
1378 | howto_table = mips_elf64_howto_table_rela; | |
1379 | ||
1380 | relent = relents; | |
1381 | for (i = 0; i < count; i++, native_relocs += entsize) | |
1382 | { | |
1383 | Elf64_Mips_Internal_Rela rela; | |
1384 | boolean used_sym, used_ssym; | |
1385 | int ir; | |
1386 | ||
1387 | if (entsize == sizeof (Elf64_Mips_External_Rela)) | |
1388 | mips_elf64_swap_reloca_in (abfd, | |
1389 | (Elf64_Mips_External_Rela *) native_relocs, | |
1390 | &rela); | |
1391 | else | |
1392 | { | |
1393 | Elf64_Mips_Internal_Rel rel; | |
1394 | ||
1395 | mips_elf64_swap_reloc_in (abfd, | |
1396 | (Elf64_Mips_External_Rel *) native_relocs, | |
1397 | &rel); | |
1398 | rela.r_offset = rel.r_offset; | |
1399 | rela.r_sym = rel.r_sym; | |
1400 | rela.r_ssym = rel.r_ssym; | |
1401 | rela.r_type3 = rel.r_type3; | |
1402 | rela.r_type2 = rel.r_type2; | |
1403 | rela.r_type = rel.r_type; | |
1404 | rela.r_addend = 0; | |
1405 | } | |
1406 | ||
1407 | /* Each entry represents up to three actual relocations. */ | |
1408 | ||
1409 | used_sym = false; | |
1410 | used_ssym = false; | |
1411 | for (ir = 0; ir < 3; ir++) | |
1412 | { | |
1413 | enum mips_elf64_reloc_type type; | |
1414 | ||
1415 | switch (ir) | |
1416 | { | |
1417 | default: | |
1418 | abort (); | |
1419 | case 0: | |
1420 | type = (enum mips_elf64_reloc_type) rela.r_type; | |
1421 | break; | |
1422 | case 1: | |
1423 | type = (enum mips_elf64_reloc_type) rela.r_type2; | |
1424 | break; | |
1425 | case 2: | |
1426 | type = (enum mips_elf64_reloc_type) rela.r_type3; | |
1427 | break; | |
1428 | } | |
1429 | ||
1430 | if (type == R_MIPS_NONE) | |
1431 | { | |
1432 | /* There are no more relocations in this entry. If this | |
1433 | is the first entry, we need to generate a dummy | |
1434 | relocation so that the generic linker knows that | |
1435 | there has been a break in the sequence of relocations | |
1436 | applying to a particular address. */ | |
1437 | if (ir == 0) | |
1438 | { | |
1439 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
1440 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
1441 | relent->address = rela.r_offset; | |
1442 | else | |
1443 | relent->address = rela.r_offset - asect->vma; | |
1444 | relent->addend = 0; | |
1445 | relent->howto = &howto_table[(int) R_MIPS_NONE]; | |
1446 | ++relent; | |
1447 | } | |
1448 | break; | |
1449 | } | |
1450 | ||
1451 | /* Some types require symbols, whereas some do not. */ | |
1452 | switch (type) | |
1453 | { | |
1454 | case R_MIPS_NONE: | |
1455 | case R_MIPS_LITERAL: | |
1456 | case R_MIPS_INSERT_A: | |
1457 | case R_MIPS_INSERT_B: | |
1458 | case R_MIPS_DELETE: | |
1459 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
1460 | break; | |
1461 | ||
1462 | default: | |
1463 | if (! used_sym) | |
1464 | { | |
1465 | if (rela.r_sym == 0) | |
1466 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
1467 | else | |
1468 | { | |
1469 | asymbol **ps, *s; | |
1470 | ||
1471 | ps = symbols + rela.r_sym - 1; | |
1472 | s = *ps; | |
1473 | if ((s->flags & BSF_SECTION_SYM) == 0) | |
1474 | relent->sym_ptr_ptr = ps; | |
1475 | else | |
1476 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; | |
1477 | } | |
1478 | ||
1479 | used_sym = true; | |
1480 | } | |
1481 | else if (! used_ssym) | |
1482 | { | |
1483 | switch (rela.r_ssym) | |
1484 | { | |
1485 | case RSS_UNDEF: | |
1486 | relent->sym_ptr_ptr = | |
1487 | bfd_abs_section_ptr->symbol_ptr_ptr; | |
1488 | break; | |
1489 | ||
1490 | case RSS_GP: | |
1491 | case RSS_GP0: | |
1492 | case RSS_LOC: | |
1493 | /* FIXME: I think these need to be handled using | |
1494 | special howto structures. */ | |
1495 | BFD_ASSERT (0); | |
1496 | break; | |
1497 | ||
1498 | default: | |
1499 | BFD_ASSERT (0); | |
1500 | break; | |
1501 | } | |
1502 | ||
1503 | used_ssym = true; | |
1504 | } | |
1505 | else | |
1506 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
1507 | ||
1508 | break; | |
1509 | } | |
1510 | ||
1511 | /* The address of an ELF reloc is section relative for an | |
1512 | object file, and absolute for an executable file or | |
1513 | shared library. The address of a BFD reloc is always | |
1514 | section relative. */ | |
1515 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
1516 | relent->address = rela.r_offset; | |
1517 | else | |
1518 | relent->address = rela.r_offset - asect->vma; | |
1519 | ||
1520 | relent->addend = rela.r_addend; | |
1521 | ||
1522 | relent->howto = &howto_table[(int) type]; | |
1523 | ||
1524 | ++relent; | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | asect->reloc_count += relent - relents; | |
1529 | ||
1530 | if (allocated != NULL) | |
1531 | free (allocated); | |
1532 | ||
1533 | return true; | |
1534 | ||
1535 | error_return: | |
1536 | if (allocated != NULL) | |
1537 | free (allocated); | |
1538 | return false; | |
1539 | } | |
1540 | ||
1541 | /* Read the relocations. On Irix 6, there can be two reloc sections | |
1542 | associated with a single data section. */ | |
1543 | ||
1544 | static boolean | |
1545 | mips_elf64_slurp_reloc_table (abfd, asect, symbols) | |
1546 | bfd *abfd; | |
1547 | asection *asect; | |
1548 | asymbol **symbols; | |
1549 | { | |
1550 | struct bfd_elf_section_data * const d = elf_section_data (asect); | |
1551 | ||
1552 | if (asect->relocation != NULL | |
1553 | || (asect->flags & SEC_RELOC) == 0 | |
1554 | || asect->reloc_count == 0) | |
1555 | return true; | |
1556 | ||
1557 | /* Allocate space for 3 arelent structures for each Rel structure. */ | |
1558 | asect->relocation = ((arelent *) | |
1559 | bfd_alloc (abfd, | |
1560 | asect->reloc_count * 3 * sizeof (arelent))); | |
1561 | if (asect->relocation == NULL) | |
1562 | return false; | |
1563 | ||
1564 | /* The slurp_one_reloc_table routine increments reloc_count. */ | |
1565 | asect->reloc_count = 0; | |
1566 | ||
1567 | if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, &d->rel_hdr)) | |
1568 | return false; | |
1569 | if (d->rel_hdr2 != NULL) | |
1570 | { | |
1571 | if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, | |
1572 | d->rel_hdr2)) | |
1573 | return false; | |
1574 | } | |
1575 | ||
1576 | return true; | |
1577 | } | |
1578 | ||
1579 | /* Write out the relocations. */ | |
1580 | ||
1581 | static void | |
1582 | mips_elf64_write_relocs (abfd, sec, data) | |
1583 | bfd *abfd; | |
1584 | asection *sec; | |
1585 | PTR data; | |
1586 | { | |
00176555 ILT |
1587 | boolean *failedp = (boolean *) data; |
1588 | unsigned int count; | |
1589 | Elf_Internal_Shdr *rela_hdr; | |
1590 | Elf64_Mips_External_Rela *ext_rela; | |
1591 | unsigned int idx; | |
1592 | asymbol *last_sym = 0; | |
1593 | int last_sym_idx = 0; | |
1594 | ||
1595 | /* If we have already failed, don't do anything. */ | |
1596 | if (*failedp) | |
1597 | return; | |
1598 | ||
1599 | if ((sec->flags & SEC_RELOC) == 0) | |
1600 | return; | |
1601 | ||
1602 | /* The linker backend writes the relocs out itself, and sets the | |
1603 | reloc_count field to zero to inhibit writing them here. Also, | |
1604 | sometimes the SEC_RELOC flag gets set even when there aren't any | |
1605 | relocs. */ | |
1606 | if (sec->reloc_count == 0) | |
1607 | return; | |
1608 | ||
1609 | /* We can combine up to three relocs that refer to the same address | |
1610 | if the latter relocs have no associated symbol. */ | |
1611 | count = 0; | |
1612 | for (idx = 0; idx < sec->reloc_count; idx++) | |
1613 | { | |
1614 | bfd_vma addr; | |
1615 | unsigned int i; | |
1616 | ||
1617 | ++count; | |
1618 | ||
1619 | addr = sec->orelocation[idx]->address; | |
1620 | for (i = 0; i < 2; i++) | |
1621 | { | |
1622 | arelent *r; | |
1623 | ||
1624 | if (idx + 1 >= sec->reloc_count) | |
1625 | break; | |
1626 | r = sec->orelocation[idx + 1]; | |
1627 | if (r->address != addr | |
1628 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
1629 | || (*r->sym_ptr_ptr)->value != 0) | |
1630 | break; | |
1631 | ||
1632 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ | |
1633 | ||
1634 | ++idx; | |
1635 | } | |
1636 | } | |
1637 | ||
1638 | rela_hdr = &elf_section_data (sec)->rel_hdr; | |
1639 | ||
1640 | rela_hdr->sh_size = rela_hdr->sh_entsize * count; | |
1641 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); | |
1642 | if (rela_hdr->contents == NULL) | |
1643 | { | |
1644 | *failedp = true; | |
1645 | return; | |
1646 | } | |
1647 | ||
1648 | ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents; | |
1649 | for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++) | |
1650 | { | |
1651 | arelent *ptr; | |
1652 | Elf64_Mips_Internal_Rela int_rela; | |
1653 | asymbol *sym; | |
1654 | int n; | |
1655 | unsigned int i; | |
1656 | ||
1657 | ptr = sec->orelocation[idx]; | |
1658 | ||
1659 | /* The address of an ELF reloc is section relative for an object | |
1660 | file, and absolute for an executable file or shared library. | |
1661 | The address of a BFD reloc is always section relative. */ | |
1662 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
1663 | int_rela.r_offset = ptr->address; | |
1664 | else | |
1665 | int_rela.r_offset = ptr->address + sec->vma; | |
1666 | ||
1667 | sym = *ptr->sym_ptr_ptr; | |
1668 | if (sym == last_sym) | |
1669 | n = last_sym_idx; | |
1670 | else | |
1671 | { | |
1672 | last_sym = sym; | |
1673 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); | |
1674 | if (n < 0) | |
1675 | { | |
1676 | *failedp = true; | |
1677 | return; | |
1678 | } | |
1679 | last_sym_idx = n; | |
1680 | } | |
1681 | ||
1682 | int_rela.r_sym = n; | |
1683 | ||
1684 | int_rela.r_addend = ptr->addend; | |
1685 | ||
1686 | int_rela.r_ssym = RSS_UNDEF; | |
1687 | ||
1688 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
1689 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
1690 | { | |
1691 | *failedp = true; | |
1692 | return; | |
1693 | } | |
1694 | ||
1695 | int_rela.r_type = ptr->howto->type; | |
1696 | int_rela.r_type2 = (int) R_MIPS_NONE; | |
1697 | int_rela.r_type3 = (int) R_MIPS_NONE; | |
1698 | ||
1699 | for (i = 0; i < 2; i++) | |
1700 | { | |
1701 | arelent *r; | |
1702 | ||
1703 | if (idx + 1 >= sec->reloc_count) | |
1704 | break; | |
1705 | r = sec->orelocation[idx + 1]; | |
1706 | if (r->address != ptr->address | |
1707 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
1708 | || (*r->sym_ptr_ptr)->value != 0) | |
1709 | break; | |
1710 | ||
1711 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ | |
1712 | ||
1713 | if (i == 0) | |
1714 | int_rela.r_type2 = r->howto->type; | |
1715 | else | |
1716 | int_rela.r_type3 = r->howto->type; | |
1717 | ||
1718 | ++idx; | |
1719 | } | |
1720 | ||
1721 | mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela); | |
1722 | } | |
1723 | ||
1724 | BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents | |
1725 | == count); | |
d1bf45aa ILT |
1726 | } |
1727 | \f | |
1728 | /* Handle a 64-bit MIPS ELF specific section. */ | |
1729 | ||
1730 | static boolean | |
1731 | mips_elf64_section_from_shdr (abfd, hdr, name) | |
1732 | bfd *abfd; | |
1733 | Elf_Internal_Shdr *hdr; | |
1734 | char *name; | |
1735 | { | |
1736 | if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name)) | |
1737 | return false; | |
1738 | ||
1739 | return true; | |
1740 | } | |
00176555 ILT |
1741 | \f |
1742 | /* ECOFF swapping routines. These are used when dealing with the | |
1743 | .mdebug section, which is in the ECOFF debugging format. */ | |
1744 | static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap = | |
1745 | { | |
1746 | /* Symbol table magic number. */ | |
1747 | magicSym2, | |
1748 | /* Alignment of debugging information. E.g., 4. */ | |
1749 | 8, | |
1750 | /* Sizes of external symbolic information. */ | |
1751 | sizeof (struct hdr_ext), | |
1752 | sizeof (struct dnr_ext), | |
1753 | sizeof (struct pdr_ext), | |
1754 | sizeof (struct sym_ext), | |
1755 | sizeof (struct opt_ext), | |
1756 | sizeof (struct fdr_ext), | |
1757 | sizeof (struct rfd_ext), | |
1758 | sizeof (struct ext_ext), | |
1759 | /* Functions to swap in external symbolic data. */ | |
1760 | ecoff_swap_hdr_in, | |
1761 | ecoff_swap_dnr_in, | |
1762 | ecoff_swap_pdr_in, | |
1763 | ecoff_swap_sym_in, | |
1764 | ecoff_swap_opt_in, | |
1765 | ecoff_swap_fdr_in, | |
1766 | ecoff_swap_rfd_in, | |
1767 | ecoff_swap_ext_in, | |
1768 | _bfd_ecoff_swap_tir_in, | |
1769 | _bfd_ecoff_swap_rndx_in, | |
1770 | /* Functions to swap out external symbolic data. */ | |
1771 | ecoff_swap_hdr_out, | |
1772 | ecoff_swap_dnr_out, | |
1773 | ecoff_swap_pdr_out, | |
1774 | ecoff_swap_sym_out, | |
1775 | ecoff_swap_opt_out, | |
1776 | ecoff_swap_fdr_out, | |
1777 | ecoff_swap_rfd_out, | |
1778 | ecoff_swap_ext_out, | |
1779 | _bfd_ecoff_swap_tir_out, | |
1780 | _bfd_ecoff_swap_rndx_out, | |
1781 | /* Function to read in symbolic data. */ | |
1782 | _bfd_mips_elf_read_ecoff_info | |
1783 | }; | |
1784 | \f | |
d1bf45aa ILT |
1785 | /* Relocations in the 64 bit MIPS ELF ABI are more complex than in |
1786 | standard ELF. This structure is used to redirect the relocation | |
1787 | handling routines. */ | |
1788 | ||
1789 | const struct elf_size_info mips_elf64_size_info = | |
1790 | { | |
1791 | sizeof (Elf64_External_Ehdr), | |
1792 | sizeof (Elf64_External_Phdr), | |
1793 | sizeof (Elf64_External_Shdr), | |
1794 | sizeof (Elf64_Mips_External_Rel), | |
1795 | sizeof (Elf64_Mips_External_Rela), | |
1796 | sizeof (Elf64_External_Sym), | |
1797 | sizeof (Elf64_External_Dyn), | |
1798 | sizeof (Elf_External_Note), | |
1799 | 64, /* arch_size */ | |
1800 | 8, /* file_align */ | |
1801 | ELFCLASS64, | |
1802 | EV_CURRENT, | |
1803 | bfd_elf64_write_out_phdrs, | |
1804 | bfd_elf64_write_shdrs_and_ehdr, | |
1805 | mips_elf64_write_relocs, | |
1806 | bfd_elf64_swap_symbol_out, | |
1807 | mips_elf64_slurp_reloc_table, | |
1808 | bfd_elf64_slurp_symbol_table, | |
1809 | bfd_elf64_swap_dyn_in | |
1810 | }; | |
1811 | ||
1812 | #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec | |
1813 | #define TARGET_LITTLE_NAME "elf64-littlemips" | |
1814 | #define TARGET_BIG_SYM bfd_elf64_bigmips_vec | |
1815 | #define TARGET_BIG_NAME "elf64-bigmips" | |
1816 | #define ELF_ARCH bfd_arch_mips | |
1817 | #define ELF_MACHINE_CODE EM_MIPS | |
1818 | #define ELF_MAXPAGESIZE 0x1000 | |
1819 | #define elf_backend_size_info mips_elf64_size_info | |
00176555 | 1820 | #define elf_backend_object_p _bfd_mips_elf_object_p |
d1bf45aa | 1821 | #define elf_backend_section_from_shdr mips_elf64_section_from_shdr |
00176555 ILT |
1822 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
1823 | #define elf_backend_section_from_bfd_section \ | |
1824 | _bfd_mips_elf_section_from_bfd_section | |
1825 | #define elf_backend_section_processing _bfd_mips_elf_section_processing | |
1826 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing | |
1827 | #define elf_backend_final_write_processing \ | |
1828 | _bfd_mips_elf_final_write_processing | |
1829 | #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap | |
1830 | ||
1831 | #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound | |
d1bf45aa ILT |
1832 | #define bfd_elf64_bfd_reloc_type_lookup mips_elf64_reloc_type_lookup |
1833 | ||
1834 | #include "elf64-target.h" |