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252b5132 RH |
1 | /* M32R-specific support for 32-bit ELF. |
2 | Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. | |
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 | |
8 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "bfd.h" | |
21 | #include "sysdep.h" | |
22 | #include "libbfd.h" | |
23 | #include "elf-bfd.h" | |
24 | #include "elf/m32r.h" | |
25 | ||
26 | static bfd_reloc_status_type m32r_elf_10_pcrel_reloc | |
27 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
28 | static bfd_reloc_status_type m32r_elf_do_10_pcrel_reloc | |
29 | PARAMS ((bfd *, reloc_howto_type *, asection *, | |
30 | bfd_byte *, bfd_vma, asection *, bfd_vma, bfd_vma)); | |
31 | static bfd_reloc_status_type m32r_elf_hi16_reloc | |
32 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
33 | static void m32r_elf_relocate_hi16 | |
34 | PARAMS ((bfd *, int, Elf_Internal_Rela *, Elf_Internal_Rela *, | |
35 | bfd_byte *, bfd_vma)); | |
36 | bfd_reloc_status_type m32r_elf_lo16_reloc | |
37 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
38 | static bfd_reloc_status_type m32r_elf_sda16_reloc | |
39 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
40 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
41 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
42 | static void m32r_info_to_howto_rel | |
43 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
44 | boolean _bfd_m32r_elf_section_from_bfd_section | |
45 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *)); | |
46 | void _bfd_m32r_elf_symbol_processing | |
47 | PARAMS ((bfd *, asymbol *)); | |
48 | static boolean m32r_elf_add_symbol_hook | |
49 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
50 | const char **, flagword *, asection **, bfd_vma *)); | |
51 | static boolean m32r_elf_relocate_section | |
52 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
53 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
54 | #if 0 /* not yet */ | |
55 | static boolean m32r_elf_relax_delete_bytes | |
56 | PARAMS ((bfd *, asection *, bfd_vma, int)); | |
57 | #endif | |
58 | ||
59 | static bfd_reloc_status_type m32r_elf_final_sda_base | |
60 | PARAMS ((bfd *, struct bfd_link_info *, const char **, bfd_vma *)); | |
61 | static boolean m32r_elf_object_p | |
62 | PARAMS ((bfd *)); | |
63 | static void m32r_elf_final_write_processing | |
64 | PARAMS ((bfd *, boolean)); | |
65 | static boolean m32r_elf_set_private_flags | |
66 | PARAMS ((bfd *, flagword)); | |
67 | static boolean m32r_elf_copy_private_bfd_data | |
68 | PARAMS ((bfd *, bfd *)); | |
69 | static boolean m32r_elf_merge_private_bfd_data | |
70 | PARAMS ((bfd *, bfd *)); | |
71 | static boolean m32r_elf_print_private_bfd_data | |
72 | PARAMS ((bfd *, PTR)); | |
73 | ||
74 | #define NOP_INSN 0x7000 | |
75 | #define MAKE_PARALLEL(insn) ((insn) | 0x8000) | |
76 | ||
77 | /* Use REL instead of RELA to save space. | |
78 | This only saves space in libraries and object files, but perhaps | |
79 | relocs will be put in ROM? All in all though, REL relocs are a pain | |
80 | to work with. */ | |
81 | #define USE_REL | |
82 | ||
83 | static reloc_howto_type m32r_elf_howto_table[] = | |
84 | { | |
85 | /* This reloc does nothing. */ | |
86 | HOWTO (R_M32R_NONE, /* type */ | |
87 | 0, /* rightshift */ | |
88 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
89 | 32, /* bitsize */ | |
90 | false, /* pc_relative */ | |
91 | 0, /* bitpos */ | |
92 | complain_overflow_bitfield, /* complain_on_overflow */ | |
93 | bfd_elf_generic_reloc, /* special_function */ | |
94 | "R_M32R_NONE", /* name */ | |
95 | false, /* partial_inplace */ | |
96 | 0, /* src_mask */ | |
97 | 0, /* dst_mask */ | |
98 | false), /* pcrel_offset */ | |
99 | ||
100 | /* A 16 bit absolute relocation. */ | |
101 | HOWTO (R_M32R_16, /* type */ | |
102 | 0, /* rightshift */ | |
103 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
104 | 16, /* bitsize */ | |
105 | false, /* pc_relative */ | |
106 | 0, /* bitpos */ | |
107 | complain_overflow_bitfield, /* complain_on_overflow */ | |
108 | bfd_elf_generic_reloc, /* special_function */ | |
109 | "R_M32R_16", /* name */ | |
110 | true, /* partial_inplace */ | |
111 | 0xffff, /* src_mask */ | |
112 | 0xffff, /* dst_mask */ | |
113 | false), /* pcrel_offset */ | |
114 | ||
115 | /* A 32 bit absolute relocation. */ | |
116 | HOWTO (R_M32R_32, /* type */ | |
117 | 0, /* rightshift */ | |
118 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
119 | 32, /* bitsize */ | |
120 | false, /* pc_relative */ | |
121 | 0, /* bitpos */ | |
122 | complain_overflow_bitfield, /* complain_on_overflow */ | |
123 | bfd_elf_generic_reloc, /* special_function */ | |
124 | "R_M32R_32", /* name */ | |
125 | true, /* partial_inplace */ | |
126 | 0xffffffff, /* src_mask */ | |
127 | 0xffffffff, /* dst_mask */ | |
128 | false), /* pcrel_offset */ | |
129 | ||
130 | /* A 24 bit address. */ | |
131 | HOWTO (R_M32R_24, /* type */ | |
132 | 0, /* rightshift */ | |
133 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
134 | 24, /* bitsize */ | |
135 | false, /* pc_relative */ | |
136 | 0, /* bitpos */ | |
137 | complain_overflow_unsigned, /* complain_on_overflow */ | |
138 | bfd_elf_generic_reloc, /* special_function */ | |
139 | "R_M32R_24", /* name */ | |
140 | true, /* partial_inplace */ | |
141 | 0xffffff, /* src_mask */ | |
142 | 0xffffff, /* dst_mask */ | |
143 | false), /* pcrel_offset */ | |
144 | ||
145 | /* An PC Relative 10-bit relocation, shifted by 2. | |
146 | This reloc is complicated because relocations are relative to pc & -4. | |
147 | i.e. branches in the right insn slot use the address of the left insn | |
148 | slot for pc. */ | |
149 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
150 | Branch relaxing in the assembler can store the addend in the insn, | |
151 | and if bfd_install_relocation gets called the addend may get added | |
152 | again. */ | |
153 | HOWTO (R_M32R_10_PCREL, /* type */ | |
154 | 2, /* rightshift */ | |
155 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
156 | 10, /* bitsize */ | |
157 | true, /* pc_relative */ | |
158 | 0, /* bitpos */ | |
159 | complain_overflow_signed, /* complain_on_overflow */ | |
160 | m32r_elf_10_pcrel_reloc, /* special_function */ | |
161 | "R_M32R_10_PCREL", /* name */ | |
162 | false, /* partial_inplace */ | |
163 | 0xff, /* src_mask */ | |
164 | 0xff, /* dst_mask */ | |
165 | true), /* pcrel_offset */ | |
166 | ||
167 | /* A relative 18 bit relocation, right shifted by 2. */ | |
168 | HOWTO (R_M32R_18_PCREL, /* type */ | |
169 | 2, /* rightshift */ | |
170 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
171 | 16, /* bitsize */ | |
172 | true, /* pc_relative */ | |
173 | 0, /* bitpos */ | |
174 | complain_overflow_signed, /* complain_on_overflow */ | |
175 | bfd_elf_generic_reloc, /* special_function */ | |
176 | "R_M32R_18_PCREL", /* name */ | |
177 | false, /* partial_inplace */ | |
178 | 0xffff, /* src_mask */ | |
179 | 0xffff, /* dst_mask */ | |
180 | true), /* pcrel_offset */ | |
181 | ||
182 | /* A relative 26 bit relocation, right shifted by 2. */ | |
183 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
184 | Branch relaxing in the assembler can store the addend in the insn, | |
185 | and if bfd_install_relocation gets called the addend may get added | |
186 | again. */ | |
187 | HOWTO (R_M32R_26_PCREL, /* type */ | |
188 | 2, /* rightshift */ | |
189 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
190 | 26, /* bitsize */ | |
191 | true, /* pc_relative */ | |
192 | 0, /* bitpos */ | |
193 | complain_overflow_signed, /* complain_on_overflow */ | |
194 | bfd_elf_generic_reloc, /* special_function */ | |
195 | "R_M32R_26_PCREL", /* name */ | |
196 | false, /* partial_inplace */ | |
197 | 0xffffff, /* src_mask */ | |
198 | 0xffffff, /* dst_mask */ | |
199 | true), /* pcrel_offset */ | |
200 | ||
201 | /* High 16 bits of address when lower 16 is or'd in. */ | |
202 | HOWTO (R_M32R_HI16_ULO, /* type */ | |
203 | 16, /* rightshift */ | |
204 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
205 | 16, /* bitsize */ | |
206 | false, /* pc_relative */ | |
207 | 0, /* bitpos */ | |
208 | complain_overflow_dont, /* complain_on_overflow */ | |
209 | m32r_elf_hi16_reloc, /* special_function */ | |
210 | "R_M32R_HI16_ULO", /* name */ | |
211 | true, /* partial_inplace */ | |
212 | 0x0000ffff, /* src_mask */ | |
213 | 0x0000ffff, /* dst_mask */ | |
214 | false), /* pcrel_offset */ | |
215 | ||
216 | /* High 16 bits of address when lower 16 is added in. */ | |
217 | HOWTO (R_M32R_HI16_SLO, /* type */ | |
218 | 16, /* rightshift */ | |
219 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
220 | 16, /* bitsize */ | |
221 | false, /* pc_relative */ | |
222 | 0, /* bitpos */ | |
223 | complain_overflow_dont, /* complain_on_overflow */ | |
224 | m32r_elf_hi16_reloc, /* special_function */ | |
225 | "R_M32R_HI16_SLO", /* name */ | |
226 | true, /* partial_inplace */ | |
227 | 0x0000ffff, /* src_mask */ | |
228 | 0x0000ffff, /* dst_mask */ | |
229 | false), /* pcrel_offset */ | |
230 | ||
231 | /* Lower 16 bits of address. */ | |
232 | HOWTO (R_M32R_LO16, /* type */ | |
233 | 0, /* rightshift */ | |
234 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
235 | 16, /* bitsize */ | |
236 | false, /* pc_relative */ | |
237 | 0, /* bitpos */ | |
238 | complain_overflow_dont, /* complain_on_overflow */ | |
239 | m32r_elf_lo16_reloc, /* special_function */ | |
240 | "R_M32R_LO16", /* name */ | |
241 | true, /* partial_inplace */ | |
242 | 0x0000ffff, /* src_mask */ | |
243 | 0x0000ffff, /* dst_mask */ | |
244 | false), /* pcrel_offset */ | |
245 | ||
246 | /* Small data area 16 bits offset. */ | |
247 | HOWTO (R_M32R_SDA16, /* type */ | |
248 | 0, /* rightshift */ | |
249 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
250 | 16, /* bitsize */ | |
251 | false, /* pc_relative */ | |
252 | 0, /* bitpos */ | |
253 | complain_overflow_signed, /* complain_on_overflow */ | |
254 | m32r_elf_sda16_reloc, /* special_function */ | |
255 | "R_M32R_SDA16", /* name */ | |
256 | true, /* partial_inplace */ /* FIXME: correct? */ | |
257 | 0x0000ffff, /* src_mask */ | |
258 | 0x0000ffff, /* dst_mask */ | |
259 | false), /* pcrel_offset */ | |
260 | ||
261 | /* GNU extension to record C++ vtable hierarchy */ | |
262 | HOWTO (R_M32R_GNU_VTINHERIT, /* type */ | |
263 | 0, /* rightshift */ | |
264 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
265 | 0, /* bitsize */ | |
266 | false, /* pc_relative */ | |
267 | 0, /* bitpos */ | |
268 | complain_overflow_dont, /* complain_on_overflow */ | |
269 | NULL, /* special_function */ | |
270 | "R_M32R_GNU_VTINHERIT", /* name */ | |
271 | false, /* partial_inplace */ | |
272 | 0, /* src_mask */ | |
273 | 0, /* dst_mask */ | |
274 | false), /* pcrel_offset */ | |
275 | ||
276 | /* GNU extension to record C++ vtable member usage */ | |
277 | HOWTO (R_M32R_GNU_VTENTRY, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 0, /* bitsize */ | |
281 | false, /* pc_relative */ | |
282 | 0, /* bitpos */ | |
283 | complain_overflow_dont, /* complain_on_overflow */ | |
284 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
285 | "R_M32R_GNU_VTENTRY", /* name */ | |
286 | false, /* partial_inplace */ | |
287 | 0, /* src_mask */ | |
288 | 0, /* dst_mask */ | |
289 | false), /* pcrel_offset */ | |
290 | ||
291 | }; | |
292 | \f | |
293 | /* Handle the R_M32R_10_PCREL reloc. */ | |
294 | ||
295 | static bfd_reloc_status_type | |
296 | m32r_elf_10_pcrel_reloc (abfd, reloc_entry, symbol, data, | |
297 | input_section, output_bfd, error_message) | |
298 | bfd * abfd; | |
299 | arelent * reloc_entry; | |
300 | asymbol * symbol; | |
301 | PTR data; | |
302 | asection * input_section; | |
303 | bfd * output_bfd; | |
5f771d47 | 304 | char ** error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
305 | { |
306 | /* This part is from bfd_elf_generic_reloc. */ | |
307 | if (output_bfd != (bfd *) NULL | |
308 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
309 | && (! reloc_entry->howto->partial_inplace | |
310 | || reloc_entry->addend == 0)) | |
311 | { | |
312 | reloc_entry->address += input_section->output_offset; | |
313 | return bfd_reloc_ok; | |
314 | } | |
315 | ||
316 | if (output_bfd != NULL) | |
317 | { | |
318 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
319 | return bfd_reloc_continue; | |
320 | } | |
321 | ||
322 | return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto, | |
323 | input_section, | |
324 | data, reloc_entry->address, | |
325 | symbol->section, | |
326 | (symbol->value | |
327 | + symbol->section->output_section->vma | |
328 | + symbol->section->output_offset), | |
329 | reloc_entry->addend); | |
330 | } | |
331 | ||
332 | /* Utility to actually perform an R_M32R_10_PCREL reloc. */ | |
333 | ||
334 | static bfd_reloc_status_type | |
335 | m32r_elf_do_10_pcrel_reloc (abfd, howto, input_section, data, offset, | |
336 | symbol_section, symbol_value, addend) | |
337 | bfd *abfd; | |
338 | reloc_howto_type *howto; | |
339 | asection *input_section; | |
340 | bfd_byte *data; | |
341 | bfd_vma offset; | |
5f771d47 | 342 | asection *symbol_section ATTRIBUTE_UNUSED; |
252b5132 RH |
343 | bfd_vma symbol_value; |
344 | bfd_vma addend; | |
345 | { | |
346 | bfd_signed_vma relocation; | |
347 | unsigned long x; | |
348 | bfd_reloc_status_type status; | |
349 | ||
350 | /* Sanity check the address (offset in section). */ | |
351 | if (offset > input_section->_cooked_size) | |
352 | return bfd_reloc_outofrange; | |
353 | ||
354 | relocation = symbol_value + addend; | |
355 | /* Make it pc relative. */ | |
356 | relocation -= (input_section->output_section->vma | |
357 | + input_section->output_offset); | |
358 | /* These jumps mask off the lower two bits of the current address | |
359 | before doing pcrel calculations. */ | |
360 | relocation -= (offset & -4L); | |
361 | ||
362 | if (relocation < -0x200 || relocation > 0x1ff) | |
363 | status = bfd_reloc_overflow; | |
364 | else | |
365 | status = bfd_reloc_ok; | |
366 | ||
367 | x = bfd_get_16 (abfd, data + offset); | |
368 | relocation >>= howto->rightshift; | |
369 | relocation <<= howto->bitpos; | |
370 | x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask); | |
371 | bfd_put_16 (abfd, x, data + offset); | |
372 | ||
373 | return status; | |
374 | } | |
375 | ||
376 | /* Handle the R_M32R_HI16_[SU]LO relocs. | |
377 | HI16_SLO is for the add3 and load/store with displacement instructions. | |
378 | HI16_ULO is for the or3 instruction. | |
379 | For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to | |
380 | the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then | |
381 | we must add one to the high 16 bytes (which will get subtracted off when | |
382 | the low 16 bits are added). | |
383 | These relocs have to be done in combination with an R_M32R_LO16 reloc | |
384 | because there is a carry from the LO16 to the HI16. Here we just save | |
385 | the information we need; we do the actual relocation when we see the LO16. | |
386 | This code is copied from the elf32-mips.c. We also support an arbitrary | |
387 | number of HI16 relocs to be associated with a single LO16 reloc. The | |
388 | assembler sorts the relocs to ensure each HI16 immediately precedes its | |
389 | LO16. However if there are multiple copies, the assembler may not find | |
390 | the real LO16 so it picks the first one it finds. */ | |
391 | ||
392 | struct m32r_hi16 | |
393 | { | |
394 | struct m32r_hi16 *next; | |
395 | bfd_byte *addr; | |
396 | bfd_vma addend; | |
397 | }; | |
398 | ||
399 | /* FIXME: This should not be a static variable. */ | |
400 | ||
401 | static struct m32r_hi16 *m32r_hi16_list; | |
402 | ||
403 | static bfd_reloc_status_type | |
404 | m32r_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
405 | input_section, output_bfd, error_message) | |
5f771d47 | 406 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
407 | arelent *reloc_entry; |
408 | asymbol *symbol; | |
409 | PTR data; | |
410 | asection *input_section; | |
411 | bfd *output_bfd; | |
5f771d47 | 412 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
413 | { |
414 | bfd_reloc_status_type ret; | |
415 | bfd_vma relocation; | |
416 | struct m32r_hi16 *n; | |
417 | ||
418 | /* This part is from bfd_elf_generic_reloc. | |
419 | If we're relocating, and this an external symbol, we don't want | |
420 | to change anything. */ | |
421 | if (output_bfd != (bfd *) NULL | |
422 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
423 | && reloc_entry->addend == 0) | |
424 | { | |
425 | reloc_entry->address += input_section->output_offset; | |
426 | return bfd_reloc_ok; | |
427 | } | |
428 | ||
429 | /* Sanity check the address (offset in section). */ | |
430 | if (reloc_entry->address > input_section->_cooked_size) | |
431 | return bfd_reloc_outofrange; | |
432 | ||
433 | ret = bfd_reloc_ok; | |
434 | if (bfd_is_und_section (symbol->section) | |
435 | && output_bfd == (bfd *) NULL) | |
436 | ret = bfd_reloc_undefined; | |
437 | ||
438 | if (bfd_is_com_section (symbol->section)) | |
439 | relocation = 0; | |
440 | else | |
441 | relocation = symbol->value; | |
442 | ||
443 | relocation += symbol->section->output_section->vma; | |
444 | relocation += symbol->section->output_offset; | |
445 | relocation += reloc_entry->addend; | |
446 | ||
447 | /* Save the information, and let LO16 do the actual relocation. */ | |
448 | n = (struct m32r_hi16 *) bfd_malloc (sizeof *n); | |
449 | if (n == NULL) | |
450 | return bfd_reloc_outofrange; | |
451 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
452 | n->addend = relocation; | |
453 | n->next = m32r_hi16_list; | |
454 | m32r_hi16_list = n; | |
455 | ||
456 | if (output_bfd != (bfd *) NULL) | |
457 | reloc_entry->address += input_section->output_offset; | |
458 | ||
459 | return ret; | |
460 | } | |
461 | ||
462 | /* Handle an M32R ELF HI16 reloc. */ | |
463 | ||
464 | static void | |
465 | m32r_elf_relocate_hi16 (input_bfd, type, relhi, rello, contents, addend) | |
466 | bfd *input_bfd; | |
467 | int type; | |
468 | Elf_Internal_Rela *relhi; | |
469 | Elf_Internal_Rela *rello; | |
470 | bfd_byte *contents; | |
471 | bfd_vma addend; | |
472 | { | |
473 | unsigned long insn; | |
474 | bfd_vma addlo; | |
475 | ||
476 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
477 | ||
478 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
479 | if (type == R_M32R_HI16_SLO) | |
480 | addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; | |
481 | else | |
482 | addlo &= 0xffff; | |
483 | ||
484 | addend += ((insn & 0xffff) << 16) + addlo; | |
485 | ||
486 | /* Reaccount for sign extension of low part. */ | |
487 | if (type == R_M32R_HI16_SLO | |
488 | && (addend & 0x8000) != 0) | |
489 | addend += 0x10000; | |
490 | ||
491 | bfd_put_32 (input_bfd, | |
492 | (insn & 0xffff0000) | ((addend >> 16) & 0xffff), | |
493 | contents + relhi->r_offset); | |
494 | } | |
495 | ||
496 | /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit | |
497 | inplace relocation; this function exists in order to do the | |
498 | R_M32R_HI16_[SU]LO relocation described above. */ | |
499 | ||
500 | bfd_reloc_status_type | |
4c72e23a | 501 | m32r_elf_lo16_reloc (input_bfd, reloc_entry, symbol, data, |
252b5132 | 502 | input_section, output_bfd, error_message) |
4c72e23a | 503 | bfd *input_bfd; |
252b5132 RH |
504 | arelent *reloc_entry; |
505 | asymbol *symbol; | |
506 | PTR data; | |
507 | asection *input_section; | |
508 | bfd *output_bfd; | |
509 | char **error_message; | |
510 | { | |
4c72e23a CM |
511 | bfd_reloc_status_type ret; |
512 | bfd_vma relocation; | |
513 | unsigned long insn; | |
514 | ||
515 | /* This part is from bfd_elf_generic_reloc. | |
516 | If we're relocating, and this an external symbol, we don't want | |
517 | to change anything. */ | |
518 | if (output_bfd != (bfd *) NULL | |
519 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
520 | && reloc_entry->addend == 0) | |
521 | { | |
522 | reloc_entry->address += input_section->output_offset; | |
523 | return bfd_reloc_ok; | |
524 | } | |
525 | ||
252b5132 RH |
526 | if (m32r_hi16_list != NULL) |
527 | { | |
528 | struct m32r_hi16 *l; | |
529 | ||
530 | l = m32r_hi16_list; | |
531 | while (l != NULL) | |
532 | { | |
533 | unsigned long insn; | |
534 | unsigned long val; | |
535 | unsigned long vallo; | |
536 | struct m32r_hi16 *next; | |
537 | ||
538 | /* Do the HI16 relocation. Note that we actually don't need | |
539 | to know anything about the LO16 itself, except where to | |
540 | find the low 16 bits of the addend needed by the LO16. */ | |
4c72e23a CM |
541 | insn = bfd_get_32 (input_bfd, l->addr); |
542 | vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) | |
252b5132 RH |
543 | & 0xffff) ^ 0x8000) - 0x8000; |
544 | val = ((insn & 0xffff) << 16) + vallo; | |
545 | val += l->addend; | |
546 | ||
547 | /* Reaccount for sign extension of low part. */ | |
548 | if ((val & 0x8000) != 0) | |
549 | val += 0x10000; | |
550 | ||
551 | insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff); | |
4c72e23a | 552 | bfd_put_32 (input_bfd, insn, l->addr); |
252b5132 RH |
553 | |
554 | next = l->next; | |
555 | free (l); | |
556 | l = next; | |
557 | } | |
558 | ||
559 | m32r_hi16_list = NULL; | |
560 | } | |
561 | ||
4c72e23a CM |
562 | /* Now do the LO16 reloc in the usual way. |
563 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
564 | but we have partial_inplace == TRUE. bfd_elf_generic_reloc will | |
565 | pass the handling back to bfd_install_relocation which will install | |
566 | a section relative addend which is wrong. */ | |
567 | ||
568 | /* Sanity check the address (offset in section). */ | |
569 | if (reloc_entry->address > input_section->_cooked_size) | |
570 | return bfd_reloc_outofrange; | |
571 | ||
572 | ret = bfd_reloc_ok; | |
573 | if (bfd_is_und_section (symbol->section) | |
574 | && output_bfd == (bfd *) NULL) | |
575 | ret = bfd_reloc_undefined; | |
576 | ||
577 | if (bfd_is_com_section (symbol->section) | |
578 | || output_bfd != (bfd *) NULL) | |
579 | relocation = 0; | |
580 | else | |
581 | relocation = symbol->value; | |
582 | ||
583 | /* Only do this for a final link. */ | |
584 | if (output_bfd == (bfd *) NULL) | |
585 | { | |
586 | relocation += symbol->section->output_section->vma; | |
587 | relocation += symbol->section->output_offset; | |
588 | } | |
589 | ||
590 | relocation += reloc_entry->addend; | |
591 | ||
592 | insn = bfd_get_32 (input_bfd, data + reloc_entry->address); | |
593 | insn = (insn & 0xffff0000) | (relocation & 0xffff); | |
594 | bfd_put_32 (input_bfd, insn, data + reloc_entry->address); | |
595 | ||
596 | if (output_bfd != (bfd *) NULL) | |
597 | reloc_entry->address += input_section->output_offset; | |
598 | ||
599 | return ret; | |
252b5132 RH |
600 | } |
601 | ||
602 | /* Handle the R_M32R_SDA16 reloc. | |
603 | This reloc is used to compute the address of objects in the small data area | |
604 | and to perform loads and stores from that area. | |
605 | The lower 16 bits are sign extended and added to the register specified | |
606 | in the instruction, which is assumed to point to _SDA_BASE_. */ | |
607 | ||
608 | static bfd_reloc_status_type | |
609 | m32r_elf_sda16_reloc (abfd, reloc_entry, symbol, data, | |
610 | input_section, output_bfd, error_message) | |
5f771d47 | 611 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
612 | arelent *reloc_entry; |
613 | asymbol *symbol; | |
5f771d47 | 614 | PTR data ATTRIBUTE_UNUSED; |
252b5132 RH |
615 | asection *input_section; |
616 | bfd *output_bfd; | |
5f771d47 | 617 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
618 | { |
619 | /* This part is from bfd_elf_generic_reloc. */ | |
620 | if (output_bfd != (bfd *) NULL | |
621 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
622 | && (! reloc_entry->howto->partial_inplace | |
623 | || reloc_entry->addend == 0)) | |
624 | { | |
625 | reloc_entry->address += input_section->output_offset; | |
626 | return bfd_reloc_ok; | |
627 | } | |
628 | ||
629 | if (output_bfd != NULL) | |
630 | { | |
631 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
632 | return bfd_reloc_continue; | |
633 | } | |
634 | ||
635 | /* FIXME: not sure what to do here yet. But then again, the linker | |
636 | may never call us. */ | |
637 | abort (); | |
638 | } | |
639 | \f | |
640 | /* Map BFD reloc types to M32R ELF reloc types. */ | |
641 | ||
642 | struct m32r_reloc_map | |
643 | { | |
644 | bfd_reloc_code_real_type bfd_reloc_val; | |
645 | unsigned char elf_reloc_val; | |
646 | }; | |
647 | ||
648 | static const struct m32r_reloc_map m32r_reloc_map[] = | |
649 | { | |
650 | { BFD_RELOC_NONE, R_M32R_NONE }, | |
651 | { BFD_RELOC_16, R_M32R_16 }, | |
652 | { BFD_RELOC_32, R_M32R_32 }, | |
653 | { BFD_RELOC_M32R_24, R_M32R_24 }, | |
654 | { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, | |
655 | { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, | |
656 | { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, | |
657 | { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, | |
658 | { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, | |
659 | { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, | |
660 | { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, | |
661 | { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, | |
662 | { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, | |
663 | }; | |
664 | ||
665 | static reloc_howto_type * | |
666 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
5f771d47 | 667 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
668 | bfd_reloc_code_real_type code; |
669 | { | |
670 | unsigned int i; | |
671 | ||
672 | for (i = 0; | |
673 | i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); | |
674 | i++) | |
675 | { | |
676 | if (m32r_reloc_map[i].bfd_reloc_val == code) | |
677 | return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; | |
678 | } | |
679 | ||
680 | return NULL; | |
681 | } | |
682 | ||
683 | /* Set the howto pointer for an M32R ELF reloc. */ | |
684 | ||
685 | static void | |
686 | m32r_info_to_howto_rel (abfd, cache_ptr, dst) | |
5f771d47 | 687 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
688 | arelent *cache_ptr; |
689 | Elf32_Internal_Rel *dst; | |
690 | { | |
691 | unsigned int r_type; | |
692 | ||
693 | r_type = ELF32_R_TYPE (dst->r_info); | |
694 | BFD_ASSERT (r_type < (unsigned int) R_M32R_max); | |
695 | cache_ptr->howto = &m32r_elf_howto_table[r_type]; | |
696 | } | |
697 | \f | |
698 | /* Given a BFD section, try to locate the corresponding ELF section | |
699 | index. */ | |
700 | ||
701 | boolean | |
702 | _bfd_m32r_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
5f771d47 ILT |
703 | bfd *abfd ATTRIBUTE_UNUSED; |
704 | Elf32_Internal_Shdr *hdr ATTRIBUTE_UNUSED; | |
252b5132 RH |
705 | asection *sec; |
706 | int *retval; | |
707 | { | |
708 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
709 | { | |
710 | *retval = SHN_M32R_SCOMMON; | |
711 | return true; | |
712 | } | |
713 | return false; | |
714 | } | |
715 | ||
716 | /* M32R ELF uses two common sections. One is the usual one, and the other | |
717 | is for small objects. All the small objects are kept together, and then | |
718 | referenced via one register, which yields faster assembler code. It is | |
719 | up to the compiler to emit an instruction to load the register with | |
720 | _SDA_BASE. This is what we use for the small common section. This | |
721 | approach is copied from elf32-mips.c. */ | |
722 | static asection m32r_elf_scom_section; | |
723 | static asymbol m32r_elf_scom_symbol; | |
724 | static asymbol *m32r_elf_scom_symbol_ptr; | |
725 | ||
726 | /* Handle the special M32R section numbers that a symbol may use. */ | |
727 | ||
728 | void | |
729 | _bfd_m32r_elf_symbol_processing (abfd, asym) | |
5f771d47 | 730 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
731 | asymbol *asym; |
732 | { | |
733 | elf_symbol_type *elfsym; | |
734 | ||
735 | elfsym = (elf_symbol_type *) asym; | |
736 | ||
737 | switch (elfsym->internal_elf_sym.st_shndx) | |
738 | { | |
739 | case SHN_M32R_SCOMMON: | |
740 | if (m32r_elf_scom_section.name == NULL) | |
741 | { | |
742 | /* Initialize the small common section. */ | |
743 | m32r_elf_scom_section.name = ".scommon"; | |
744 | m32r_elf_scom_section.flags = SEC_IS_COMMON; | |
745 | m32r_elf_scom_section.output_section = &m32r_elf_scom_section; | |
746 | m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; | |
747 | m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; | |
748 | m32r_elf_scom_symbol.name = ".scommon"; | |
749 | m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
750 | m32r_elf_scom_symbol.section = &m32r_elf_scom_section; | |
751 | m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; | |
752 | } | |
753 | asym->section = &m32r_elf_scom_section; | |
754 | asym->value = elfsym->internal_elf_sym.st_size; | |
755 | break; | |
756 | } | |
757 | } | |
758 | ||
759 | /* Hook called by the linker routine which adds symbols from an object | |
760 | file. We must handle the special M32R section numbers here. | |
761 | We also keep watching for whether we need to create the sdata special | |
762 | linker sections. */ | |
763 | ||
764 | static boolean | |
765 | m32r_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
766 | bfd *abfd; | |
767 | struct bfd_link_info *info; | |
768 | const Elf_Internal_Sym *sym; | |
769 | const char **namep; | |
5f771d47 | 770 | flagword *flagsp ATTRIBUTE_UNUSED; |
252b5132 RH |
771 | asection **secp; |
772 | bfd_vma *valp; | |
773 | { | |
774 | if (! info->relocateable | |
775 | && (*namep)[0] == '_' && (*namep)[1] == 'S' | |
776 | && strcmp (*namep, "_SDA_BASE_") == 0) | |
777 | { | |
778 | /* This is simpler than using _bfd_elf_create_linker_section | |
779 | (our needs are simpler than ppc's needs). Also | |
780 | _bfd_elf_create_linker_section currently has a bug where if a .sdata | |
781 | section already exists a new one is created that follows it which | |
782 | screws of _SDA_BASE_ address calcs because output_offset != 0. */ | |
783 | struct elf_link_hash_entry *h; | |
784 | asection *s = bfd_get_section_by_name (abfd, ".sdata"); | |
785 | ||
786 | /* The following code was cobbled from elf32-ppc.c and elflink.c. */ | |
787 | ||
788 | if (s == NULL) | |
789 | { | |
790 | int flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
791 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
792 | ||
793 | s = bfd_make_section_anyway (abfd, ".sdata"); | |
794 | if (s == NULL) | |
795 | return false; | |
796 | bfd_set_section_flags (abfd, s, flags); | |
797 | bfd_set_section_alignment (abfd, s, 2); | |
798 | } | |
799 | ||
800 | h = (struct elf_link_hash_entry *) | |
801 | bfd_link_hash_lookup (info->hash, "_SDA_BASE_", false, false, false); | |
802 | ||
803 | if ((h == NULL || h->root.type == bfd_link_hash_undefined) | |
804 | && !(_bfd_generic_link_add_one_symbol (info, | |
805 | abfd, | |
806 | "_SDA_BASE_", | |
807 | BSF_GLOBAL, | |
808 | s, | |
809 | 32768, | |
810 | (const char *) NULL, | |
811 | false, | |
812 | get_elf_backend_data (abfd)->collect, | |
813 | (struct bfd_link_hash_entry **) &h))) | |
814 | return false; | |
815 | h->type = STT_OBJECT; | |
816 | } | |
817 | ||
818 | switch (sym->st_shndx) | |
819 | { | |
820 | case SHN_M32R_SCOMMON: | |
821 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
822 | (*secp)->flags |= SEC_IS_COMMON; | |
823 | *valp = sym->st_size; | |
824 | break; | |
825 | } | |
826 | ||
827 | return true; | |
828 | } | |
829 | ||
830 | /* We have to figure out the SDA_BASE value, so that we can adjust the | |
831 | symbol value correctly. We look up the symbol _SDA_BASE_ in the output | |
832 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
833 | target data. We don't need to adjust the symbol value for an | |
834 | external symbol if we are producing relocateable output. */ | |
835 | ||
836 | static bfd_reloc_status_type | |
837 | m32r_elf_final_sda_base (output_bfd, info, error_message, psb) | |
838 | bfd *output_bfd; | |
839 | struct bfd_link_info *info; | |
840 | const char **error_message; | |
841 | bfd_vma *psb; | |
842 | { | |
843 | if (elf_gp (output_bfd) == 0) | |
844 | { | |
845 | struct bfd_link_hash_entry *h; | |
846 | ||
847 | h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", false, false, true); | |
848 | if (h != (struct bfd_link_hash_entry *) NULL | |
849 | && h->type == bfd_link_hash_defined) | |
850 | elf_gp (output_bfd) = (h->u.def.value | |
851 | + h->u.def.section->output_section->vma | |
852 | + h->u.def.section->output_offset); | |
853 | else | |
854 | { | |
855 | /* Only get the error once. */ | |
856 | *psb = elf_gp (output_bfd) = 4; | |
857 | *error_message = | |
858 | (const char *) _("SDA relocation when _SDA_BASE_ not defined"); | |
859 | return bfd_reloc_dangerous; | |
860 | } | |
861 | } | |
862 | *psb = elf_gp (output_bfd); | |
863 | return bfd_reloc_ok; | |
864 | } | |
865 | \f | |
866 | /* Relocate an M32R/D ELF section. | |
867 | There is some attempt to make this function usable for many architectures, | |
868 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
869 | if only to serve as a learning tool. | |
870 | ||
871 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
872 | to handle the relocations for a section. | |
873 | ||
874 | The relocs are always passed as Rela structures; if the section | |
875 | actually uses Rel structures, the r_addend field will always be | |
876 | zero. | |
877 | ||
878 | This function is responsible for adjust the section contents as | |
879 | necessary, and (if using Rela relocs and generating a | |
880 | relocateable output file) adjusting the reloc addend as | |
881 | necessary. | |
882 | ||
883 | This function does not have to worry about setting the reloc | |
884 | address or the reloc symbol index. | |
885 | ||
886 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
887 | ||
888 | LOCAL_SECTIONS is an array giving the section in the input file | |
889 | corresponding to the st_shndx field of each local symbol. | |
890 | ||
891 | The global hash table entry for the global symbols can be found | |
892 | via elf_sym_hashes (input_bfd). | |
893 | ||
894 | When generating relocateable output, this function must handle | |
895 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
896 | going to be the section symbol corresponding to the output | |
897 | section, which means that the addend must be adjusted | |
898 | accordingly. */ | |
899 | ||
900 | static boolean | |
901 | m32r_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
902 | contents, relocs, local_syms, local_sections) | |
5f771d47 | 903 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
904 | struct bfd_link_info *info; |
905 | bfd *input_bfd; | |
906 | asection *input_section; | |
907 | bfd_byte *contents; | |
908 | Elf_Internal_Rela *relocs; | |
909 | Elf_Internal_Sym *local_syms; | |
910 | asection **local_sections; | |
911 | { | |
912 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
913 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
914 | Elf_Internal_Rela *rel, *relend; | |
915 | /* Assume success. */ | |
916 | boolean ret = true; | |
917 | ||
918 | rel = relocs; | |
919 | relend = relocs + input_section->reloc_count; | |
920 | for (; rel < relend; rel++) | |
921 | { | |
922 | int r_type; | |
923 | reloc_howto_type *howto; | |
924 | unsigned long r_symndx; | |
925 | /* We can't modify r_addend here as elf_link_input_bfd has an assert to | |
926 | ensure it's zero (we use REL relocs, not RELA). Therefore this | |
927 | should be assigning zero to `addend', but for clarity we use | |
928 | `r_addend'. */ | |
929 | bfd_vma addend = rel->r_addend; | |
930 | bfd_vma offset = rel->r_offset; | |
931 | struct elf_link_hash_entry *h; | |
932 | Elf_Internal_Sym *sym; | |
933 | asection *sec; | |
934 | const char *sym_name; | |
935 | bfd_reloc_status_type r; | |
936 | const char *errmsg = NULL; | |
937 | ||
938 | h = NULL; | |
939 | r_type = ELF32_R_TYPE (rel->r_info); | |
940 | if (r_type < 0 || r_type >= (int) R_M32R_max) | |
941 | { | |
942 | (*_bfd_error_handler) (_("%s: unknown relocation type %d"), | |
943 | bfd_get_filename (input_bfd), | |
944 | (int) r_type); | |
945 | bfd_set_error (bfd_error_bad_value); | |
946 | ret = false; | |
947 | continue; | |
948 | } | |
949 | ||
950 | if (r_type == R_M32R_GNU_VTENTRY | |
951 | || r_type == R_M32R_GNU_VTINHERIT) | |
952 | continue; | |
953 | ||
954 | howto = m32r_elf_howto_table + r_type; | |
955 | r_symndx = ELF32_R_SYM (rel->r_info); | |
956 | ||
957 | if (info->relocateable) | |
958 | { | |
959 | /* This is a relocateable link. We don't have to change | |
960 | anything, unless the reloc is against a section symbol, | |
961 | in which case we have to adjust according to where the | |
962 | section symbol winds up in the output section. */ | |
963 | sec = NULL; | |
964 | if (r_symndx >= symtab_hdr->sh_info) | |
965 | { | |
966 | /* External symbol. */ | |
967 | continue; | |
968 | } | |
969 | ||
970 | /* Local symbol. */ | |
971 | sym = local_syms + r_symndx; | |
972 | sym_name = "<local symbol>"; | |
973 | /* STT_SECTION: symbol is associated with a section. */ | |
974 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
975 | { | |
976 | /* Symbol isn't associated with a section. Nothing to do. */ | |
977 | continue; | |
978 | } | |
979 | ||
980 | sec = local_sections[r_symndx]; | |
981 | addend += sec->output_offset + sym->st_value; | |
982 | #ifndef USE_REL | |
983 | /* This can't be done for USE_REL because it doesn't mean anything | |
984 | and elf_link_input_bfd asserts this stays zero. */ | |
985 | rel->r_addend = addend; | |
986 | #endif | |
987 | ||
988 | #ifndef USE_REL | |
989 | /* Addends are stored with relocs. We're done. */ | |
990 | continue; | |
991 | #else /* USE_REL */ | |
992 | /* If partial_inplace, we need to store any additional addend | |
993 | back in the section. */ | |
994 | if (! howto->partial_inplace) | |
995 | continue; | |
996 | /* ??? Here is a nice place to call a special_function | |
997 | like handler. */ | |
998 | if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) | |
999 | r = _bfd_relocate_contents (howto, input_bfd, | |
1000 | addend, contents + offset); | |
1001 | else | |
1002 | { | |
1003 | Elf_Internal_Rela *lorel; | |
1004 | ||
1005 | /* We allow an arbitrary number of HI16 relocs before the | |
1006 | LO16 reloc. This permits gcc to emit the HI and LO relocs | |
1007 | itself. */ | |
1008 | for (lorel = rel + 1; | |
1009 | (lorel < relend | |
1010 | && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO | |
1011 | || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); | |
1012 | lorel++) | |
1013 | continue; | |
1014 | if (lorel < relend | |
1015 | && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) | |
1016 | { | |
1017 | m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, | |
1018 | contents, addend); | |
1019 | r = bfd_reloc_ok; | |
1020 | } | |
1021 | else | |
1022 | r = _bfd_relocate_contents (howto, input_bfd, | |
1023 | addend, contents + offset); | |
1024 | } | |
1025 | #endif /* USE_REL */ | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | bfd_vma relocation; | |
1030 | ||
1031 | /* This is a final link. */ | |
1032 | sym = NULL; | |
1033 | sec = NULL; | |
1034 | ||
1035 | if (r_symndx < symtab_hdr->sh_info) | |
1036 | { | |
1037 | /* Local symbol. */ | |
1038 | sym = local_syms + r_symndx; | |
1039 | sec = local_sections[r_symndx]; | |
1040 | sym_name = "<local symbol>"; | |
1041 | relocation = (sec->output_section->vma | |
1042 | + sec->output_offset | |
1043 | + sym->st_value); | |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | /* External symbol. */ | |
1048 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1049 | while (h->root.type == bfd_link_hash_indirect | |
1050 | || h->root.type == bfd_link_hash_warning) | |
1051 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1052 | sym_name = h->root.root.string; | |
1053 | ||
1054 | if (h->root.type == bfd_link_hash_defined | |
1055 | || h->root.type == bfd_link_hash_defweak) | |
1056 | { | |
1057 | sec = h->root.u.def.section; | |
1058 | if (sec->output_section == NULL) | |
1059 | relocation = 0; | |
1060 | else | |
1061 | relocation = (h->root.u.def.value | |
1062 | + sec->output_section->vma | |
1063 | + sec->output_offset); | |
1064 | } | |
1065 | else if (h->root.type == bfd_link_hash_undefweak) | |
1066 | relocation = 0; | |
1067 | else | |
1068 | { | |
1069 | if (! ((*info->callbacks->undefined_symbol) | |
1070 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1071 | input_section, offset, true))) |
252b5132 RH |
1072 | return false; |
1073 | relocation = 0; | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | /* Sanity check the address. */ | |
1078 | if (offset > input_section->_raw_size) | |
1079 | { | |
1080 | r = bfd_reloc_outofrange; | |
1081 | goto check_reloc; | |
1082 | } | |
1083 | ||
1084 | switch ((int) r_type) | |
1085 | { | |
1086 | case (int) R_M32R_10_PCREL : | |
1087 | r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, | |
1088 | contents, offset, | |
1089 | sec, relocation, addend); | |
1090 | break; | |
1091 | ||
1092 | case (int) R_M32R_HI16_SLO : | |
1093 | case (int) R_M32R_HI16_ULO : | |
1094 | { | |
1095 | Elf_Internal_Rela *lorel; | |
1096 | ||
1097 | /* We allow an arbitrary number of HI16 relocs before the | |
1098 | LO16 reloc. This permits gcc to emit the HI and LO relocs | |
1099 | itself. */ | |
1100 | for (lorel = rel + 1; | |
1101 | (lorel < relend | |
1102 | && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO | |
1103 | || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); | |
1104 | lorel++) | |
1105 | continue; | |
1106 | if (lorel < relend | |
1107 | && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) | |
1108 | { | |
1109 | m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, | |
1110 | contents, relocation + addend); | |
1111 | r = bfd_reloc_ok; | |
1112 | } | |
1113 | else | |
1114 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1115 | contents, offset, | |
1116 | relocation, addend); | |
1117 | } | |
1118 | break; | |
1119 | ||
1120 | case (int) R_M32R_SDA16 : | |
1121 | { | |
1122 | const char *name; | |
1123 | ||
1124 | BFD_ASSERT (sec != NULL); | |
1125 | name = bfd_get_section_name (abfd, sec); | |
1126 | ||
1127 | if (strcmp (name, ".sdata") == 0 | |
1128 | || strcmp (name, ".sbss") == 0 | |
1129 | || strcmp (name, ".scommon") == 0) | |
1130 | { | |
1131 | bfd_vma sda_base; | |
1132 | bfd *out_bfd = sec->output_section->owner; | |
1133 | ||
1134 | r = m32r_elf_final_sda_base (out_bfd, info, | |
1135 | &errmsg, | |
1136 | &sda_base); | |
1137 | if (r != bfd_reloc_ok) | |
1138 | { | |
1139 | ret = false; | |
1140 | goto check_reloc; | |
1141 | } | |
1142 | ||
1143 | /* At this point `relocation' contains the object's | |
1144 | address. */ | |
1145 | relocation -= sda_base; | |
1146 | /* Now it contains the offset from _SDA_BASE_. */ | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | (*_bfd_error_handler) (_("%s: The target (%s) of an %s relocation is in the wrong section (%s)"), | |
1151 | bfd_get_filename (input_bfd), | |
1152 | sym_name, | |
1153 | m32r_elf_howto_table[(int) r_type].name, | |
1154 | bfd_get_section_name (abfd, sec)); | |
1155 | /*bfd_set_error (bfd_error_bad_value); ??? why? */ | |
1156 | ret = false; | |
1157 | continue; | |
1158 | } | |
1159 | } | |
1160 | /* fall through */ | |
1161 | ||
1162 | default : | |
1163 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1164 | contents, offset, | |
1165 | relocation, addend); | |
1166 | break; | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | check_reloc: | |
1171 | ||
1172 | if (r != bfd_reloc_ok) | |
1173 | { | |
1174 | /* FIXME: This should be generic enough to go in a utility. */ | |
1175 | const char *name; | |
1176 | ||
1177 | if (h != NULL) | |
1178 | name = h->root.root.string; | |
1179 | else | |
1180 | { | |
1181 | name = (bfd_elf_string_from_elf_section | |
1182 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1183 | if (name == NULL || *name == '\0') | |
1184 | name = bfd_section_name (input_bfd, sec); | |
1185 | } | |
1186 | ||
1187 | if (errmsg != NULL) | |
1188 | goto common_error; | |
1189 | ||
1190 | switch (r) | |
1191 | { | |
1192 | case bfd_reloc_overflow: | |
1193 | if (! ((*info->callbacks->reloc_overflow) | |
1194 | (info, name, howto->name, (bfd_vma) 0, | |
1195 | input_bfd, input_section, offset))) | |
1196 | return false; | |
1197 | break; | |
1198 | ||
1199 | case bfd_reloc_undefined: | |
1200 | if (! ((*info->callbacks->undefined_symbol) | |
1201 | (info, name, input_bfd, input_section, | |
5cc7c785 | 1202 | offset, true))) |
252b5132 RH |
1203 | return false; |
1204 | break; | |
1205 | ||
1206 | case bfd_reloc_outofrange: | |
1207 | errmsg = _("internal error: out of range error"); | |
1208 | goto common_error; | |
1209 | ||
1210 | case bfd_reloc_notsupported: | |
1211 | errmsg = _("internal error: unsupported relocation error"); | |
1212 | goto common_error; | |
1213 | ||
1214 | case bfd_reloc_dangerous: | |
1215 | errmsg = _("internal error: dangerous error"); | |
1216 | goto common_error; | |
1217 | ||
1218 | default: | |
1219 | errmsg = _("internal error: unknown error"); | |
1220 | /* fall through */ | |
1221 | ||
1222 | common_error: | |
1223 | if (!((*info->callbacks->warning) | |
1224 | (info, errmsg, name, input_bfd, input_section, | |
1225 | offset))) | |
1226 | return false; | |
1227 | break; | |
1228 | } | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | return ret; | |
1233 | } | |
1234 | \f | |
1235 | #if 0 /* relaxing not supported yet */ | |
1236 | ||
1237 | /* This function handles relaxing for the m32r. | |
1238 | Relaxing on the m32r is tricky because of instruction alignment | |
1239 | requirements (4 byte instructions must be aligned on 4 byte boundaries). | |
1240 | ||
1241 | The following relaxing opportunities are handled: | |
1242 | ||
1243 | seth/add3/jl -> bl24 or bl8 | |
1244 | seth/add3 -> ld24 | |
1245 | ||
1246 | It would be nice to handle bl24 -> bl8 but given: | |
1247 | ||
1248 | - 4 byte insns must be on 4 byte boundaries | |
1249 | - branch instructions only branch to insns on 4 byte boundaries | |
1250 | ||
1251 | this isn't much of a win because the insn in the 2 "deleted" bytes | |
1252 | must become a nop. With some complexity some real relaxation could be | |
1253 | done but the frequency just wouldn't make it worth it; it's better to | |
1254 | try to do all the code compaction one can elsewhere. | |
1255 | When the chip supports parallel 16 bit insns, things may change. | |
1256 | */ | |
1257 | ||
1258 | static boolean | |
1259 | m32r_elf_relax_section (abfd, sec, link_info, again) | |
1260 | bfd *abfd; | |
1261 | asection *sec; | |
1262 | struct bfd_link_info *link_info; | |
1263 | boolean *again; | |
1264 | { | |
1265 | Elf_Internal_Shdr *symtab_hdr; | |
1266 | /* The Rela structures are used here because that's what | |
1267 | _bfd_elf32_link_read_relocs uses [for convenience - it sets the addend | |
1268 | field to 0]. */ | |
1269 | Elf_Internal_Rela *internal_relocs; | |
1270 | Elf_Internal_Rela *free_relocs = NULL; | |
1271 | Elf_Internal_Rela *irel, *irelend; | |
1272 | bfd_byte *contents = NULL; | |
1273 | bfd_byte *free_contents = NULL; | |
1274 | Elf32_External_Sym *extsyms = NULL; | |
1275 | Elf32_External_Sym *free_extsyms = NULL; | |
1276 | ||
1277 | /* Assume nothing changes. */ | |
1278 | *again = false; | |
1279 | ||
1280 | /* We don't have to do anything for a relocateable link, if | |
1281 | this section does not have relocs, or if this is not a | |
1282 | code section. */ | |
1283 | if (link_info->relocateable | |
1284 | || (sec->flags & SEC_RELOC) == 0 | |
1285 | || sec->reloc_count == 0 | |
1286 | || (sec->flags & SEC_CODE) == 0 | |
1287 | || 0 /* FIXME: check SHF_M32R_CAN_RELAX */) | |
1288 | return true; | |
1289 | ||
1290 | /* If this is the first time we have been called for this section, | |
1291 | initialize the cooked size. */ | |
1292 | if (sec->_cooked_size == 0) | |
1293 | sec->_cooked_size = sec->_raw_size; | |
1294 | ||
1295 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1296 | ||
1297 | /* Get a copy of the native relocations. */ | |
1298 | internal_relocs = (_bfd_elf32_link_read_relocs | |
1299 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1300 | link_info->keep_memory)); | |
1301 | if (internal_relocs == NULL) | |
1302 | goto error_return; | |
1303 | if (! link_info->keep_memory) | |
1304 | free_relocs = internal_relocs; | |
1305 | ||
1306 | /* Walk through them looking for relaxing opportunities. */ | |
1307 | irelend = internal_relocs + sec->reloc_count; | |
1308 | for (irel = internal_relocs; irel < irelend; irel++) | |
1309 | { | |
1310 | bfd_vma symval; | |
1311 | ||
1312 | /* If this isn't something that can be relaxed, then ignore | |
1313 | this reloc. */ | |
1314 | if (ELF32_R_TYPE (irel->r_info) != (int) R_M32R_HI16_SLO) | |
1315 | continue; | |
1316 | ||
1317 | /* Get the section contents if we haven't done so already. */ | |
1318 | if (contents == NULL) | |
1319 | { | |
1320 | /* Get cached copy if it exists. */ | |
1321 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1322 | contents = elf_section_data (sec)->this_hdr.contents; | |
1323 | else | |
1324 | { | |
1325 | /* Go get them off disk. */ | |
1326 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
1327 | if (contents == NULL) | |
1328 | goto error_return; | |
1329 | free_contents = contents; | |
1330 | ||
1331 | if (! bfd_get_section_contents (abfd, sec, contents, | |
1332 | (file_ptr) 0, sec->_raw_size)) | |
1333 | goto error_return; | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | /* Read this BFD's symbols if we haven't done so already. */ | |
1338 | if (extsyms == NULL) | |
1339 | { | |
1340 | /* Get cached copy if it exists. */ | |
1341 | if (symtab_hdr->contents != NULL) | |
1342 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1343 | else | |
1344 | { | |
1345 | /* Go get them off disk. */ | |
1346 | extsyms = ((Elf32_External_Sym *) | |
1347 | bfd_malloc (symtab_hdr->sh_size)); | |
1348 | if (extsyms == NULL) | |
1349 | goto error_return; | |
1350 | free_extsyms = extsyms; | |
1351 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1352 | || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) | |
1353 | != symtab_hdr->sh_size)) | |
1354 | goto error_return; | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | /* Get the value of the symbol referred to by the reloc. */ | |
1359 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1360 | { | |
1361 | Elf_Internal_Sym isym; | |
1362 | asection *sym_sec; | |
1363 | ||
1364 | /* A local symbol. */ | |
1365 | bfd_elf32_swap_symbol_in (abfd, | |
1366 | extsyms + ELF32_R_SYM (irel->r_info), | |
1367 | &isym); | |
1368 | ||
1369 | sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx); | |
1370 | symval = (isym.st_value | |
1371 | + sym_sec->output_section->vma | |
1372 | + sym_sec->output_offset); | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | unsigned long indx; | |
1377 | struct elf_link_hash_entry *h; | |
1378 | ||
1379 | /* An external symbol. */ | |
1380 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1381 | h = elf_sym_hashes (abfd)[indx]; | |
1382 | BFD_ASSERT (h != NULL); | |
1383 | if (h->root.type != bfd_link_hash_defined | |
1384 | && h->root.type != bfd_link_hash_defweak) | |
1385 | { | |
1386 | /* This appears to be a reference to an undefined | |
1387 | symbol. Just ignore it--it will be caught by the | |
1388 | regular reloc processing. */ | |
1389 | continue; | |
1390 | } | |
1391 | ||
1392 | symval = (h->root.u.def.value | |
1393 | + h->root.u.def.section->output_section->vma | |
1394 | + h->root.u.def.section->output_offset); | |
1395 | } | |
1396 | ||
1397 | /* For simplicity of coding, we are going to modify the section | |
1398 | contents, the section relocs, and the BFD symbol table. We | |
1399 | must tell the rest of the code not to free up this | |
1400 | information. It would be possible to instead create a table | |
1401 | of changes which have to be made, as is done in coff-mips.c; | |
1402 | that would be more work, but would require less memory when | |
1403 | the linker is run. */ | |
1404 | ||
1405 | /* Try to change a seth/add3/jl subroutine call to bl24 or bl8. | |
1406 | This sequence is generated by the compiler when compiling in | |
1407 | 32 bit mode. Also look for seth/add3 -> ld24. */ | |
1408 | ||
1409 | if (ELF32_R_TYPE (irel->r_info) == (int) R_M32R_HI16_SLO) | |
1410 | { | |
1411 | Elf_Internal_Rela *nrel; | |
1412 | bfd_vma pc = (sec->output_section->vma + sec->output_offset | |
1413 | + irel->r_offset); | |
1414 | bfd_signed_vma pcrel_value = symval - pc; | |
1415 | unsigned int code,reg; | |
1416 | int addend,nop_p,bl8_p,to_delete; | |
1417 | ||
1418 | /* The tests are ordered so that we get out as quickly as possible | |
1419 | if this isn't something we can relax, taking into account that | |
1420 | we are looking for two separate possibilities (jl/ld24). */ | |
1421 | ||
1422 | /* Do nothing if no room in the section for this to be what we're | |
1423 | looking for. */ | |
1424 | if (irel->r_offset > sec->_cooked_size - 8) | |
1425 | continue; | |
1426 | ||
1427 | /* Make sure the next relocation applies to the next | |
1428 | instruction and that it's the add3's reloc. */ | |
1429 | nrel = irel + 1; | |
1430 | if (nrel == irelend | |
1431 | || irel->r_offset + 4 != nrel->r_offset | |
1432 | || ELF32_R_TYPE (nrel->r_info) != (int) R_M32R_LO16) | |
1433 | continue; | |
1434 | ||
1435 | /* See if the instructions are seth/add3. */ | |
1436 | /* FIXME: This is where macros from cgen can come in. */ | |
1437 | code = bfd_get_16 (abfd, contents + irel->r_offset + 0); | |
1438 | if ((code & 0xf0ff) != 0xd0c0) | |
1439 | continue; /* not seth rN,foo */ | |
1440 | reg = (code & 0x0f00) >> 8; | |
1441 | code = bfd_get_16 (abfd, contents + irel->r_offset + 4); | |
1442 | if (code != (0x80a0 | reg | (reg << 8))) | |
1443 | continue; /* not add3 rN,rN,foo */ | |
1444 | ||
1445 | /* At this point we've confirmed we have seth/add3. Now check | |
1446 | whether the next insn is a jl, in which case try to change this | |
1447 | to bl24 or bl8. */ | |
1448 | ||
1449 | /* Ensure the branch target is in range. | |
1450 | The bl24 instruction has a 24 bit operand which is the target | |
1451 | address right shifted by 2, giving a signed range of 26 bits. | |
1452 | Note that 4 bytes are added to the high value because the target | |
1453 | will be at least 4 bytes closer if we can relax. It'll actually | |
1454 | be 4 or 8 bytes closer, but we don't know which just yet and | |
1455 | the difference isn't significant enough to worry about. */ | |
1456 | #ifndef USE_REL /* put in for learning purposes */ | |
1457 | pcrel_value += irel->r_addend; | |
1458 | #else | |
1459 | addend = bfd_get_signed_16 (abfd, contents + irel->r_offset + 2); | |
1460 | pcrel_value += addend; | |
1461 | #endif | |
1462 | ||
1463 | if (pcrel_value >= -(1 << 25) && pcrel_value < (1 << 25) + 4 | |
1464 | /* Do nothing if no room in the section for this to be what we're | |
1465 | looking for. */ | |
1466 | && (irel->r_offset <= sec->_cooked_size - 12) | |
1467 | /* Ensure the next insn is "jl rN". */ | |
1468 | && ((code = bfd_get_16 (abfd, contents + irel->r_offset + 8)), | |
1469 | code != (0x1ec0 | reg))) | |
1470 | { | |
1471 | /* We can relax to bl24/bl8. */ | |
1472 | ||
1473 | /* See if there's a nop following the jl. | |
1474 | Also see if we can use a bl8 insn. */ | |
1475 | code = bfd_get_16 (abfd, contents + irel->r_offset + 10); | |
1476 | nop_p = (code & 0x7fff) == NOP_INSN; | |
1477 | bl8_p = pcrel_value >= -0x200 && pcrel_value < 0x200; | |
1478 | ||
1479 | if (bl8_p) | |
1480 | { | |
1481 | /* Change "seth rN,foo" to "bl8 foo || nop". | |
1482 | We OR in CODE just in case it's not a nop (technically, | |
1483 | CODE currently must be a nop, but for cleanness we | |
1484 | allow it to be anything). */ | |
1485 | #ifndef USE_REL /* put in for learning purposes */ | |
1486 | code = 0x7e000000 | MAKE_PARALLEL (code); | |
1487 | #else | |
1488 | code = (0x7e000000 + (((addend >> 2) & 0xff) << 16)) | MAKE_PARALLEL (code); | |
1489 | #endif | |
1490 | to_delete = 8; | |
1491 | } | |
1492 | else | |
1493 | { | |
1494 | /* Change the seth rN,foo to a bl24 foo. */ | |
1495 | #ifndef USE_REL /* put in for learning purposes */ | |
1496 | code = 0xfe000000; | |
1497 | #else | |
1498 | code = 0xfe000000 + ((addend >> 2) & 0xffffff); | |
1499 | #endif | |
1500 | to_delete = nop_p ? 8 : 4; | |
1501 | } | |
1502 | ||
1503 | bfd_put_32 (abfd, code, contents + irel->r_offset); | |
1504 | ||
1505 | /* Set the new reloc type. */ | |
1506 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
1507 | bl8_p ? R_M32R_10_PCREL : R_M32R_26_PCREL); | |
1508 | ||
1509 | /* Delete the add3 reloc by making it a null reloc. */ | |
1510 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
1511 | R_M32R_NONE); | |
1512 | } | |
1513 | else if (addend >= 0 | |
1514 | && symval + addend <= 0xffffff) | |
1515 | { | |
1516 | /* We can relax to ld24. */ | |
1517 | ||
1518 | code = 0xe0000000 | (reg << 24) | (addend & 0xffffff); | |
1519 | bfd_put_32 (abfd, code, contents + irel->r_offset); | |
1520 | to_delete = 4; | |
1521 | /* Tell the following code a nop filler isn't needed. */ | |
1522 | nop_p = 1; | |
1523 | } | |
1524 | else | |
1525 | { | |
1526 | /* Can't do anything here. */ | |
1527 | continue; | |
1528 | } | |
1529 | ||
1530 | /* Note that we've changed the relocs, section contents, etc. */ | |
1531 | elf_section_data (sec)->relocs = internal_relocs; | |
1532 | free_relocs = NULL; | |
1533 | ||
1534 | elf_section_data (sec)->this_hdr.contents = contents; | |
1535 | free_contents = NULL; | |
1536 | ||
1537 | symtab_hdr->contents = (bfd_byte *) extsyms; | |
1538 | free_extsyms = NULL; | |
1539 | ||
1540 | /* Delete TO_DELETE bytes of data. */ | |
1541 | if (!m32r_elf_relax_delete_bytes (abfd, sec, | |
1542 | irel->r_offset + 4, to_delete)) | |
1543 | goto error_return; | |
1544 | ||
1545 | /* Now that the following bytes have been moved into place, see if | |
1546 | we need to replace the jl with a nop. This happens when we had | |
1547 | to use a bl24 insn and the insn following the jl isn't a nop. | |
1548 | Technically, this situation can't happen (since the insn can | |
1549 | never be executed) but to be clean we do this. When the chip | |
1550 | supports parallel 16 bit insns things may change. | |
1551 | We don't need to do this in the case of relaxing to ld24, | |
1552 | and the above code sets nop_p so this isn't done. */ | |
1553 | if (! nop_p && to_delete == 4) | |
1554 | bfd_put_16 (abfd, NOP_INSN, contents + irel->r_offset + 4); | |
1555 | ||
1556 | /* That will change things, so we should relax again. | |
1557 | Note that this is not required, and it may be slow. */ | |
1558 | *again = true; | |
1559 | ||
1560 | continue; | |
1561 | } | |
1562 | ||
1563 | /* loop to try the next reloc */ | |
1564 | } | |
1565 | ||
1566 | if (free_relocs != NULL) | |
1567 | { | |
1568 | free (free_relocs); | |
1569 | free_relocs = NULL; | |
1570 | } | |
1571 | ||
1572 | if (free_contents != NULL) | |
1573 | { | |
1574 | if (! link_info->keep_memory) | |
1575 | free (free_contents); | |
1576 | else | |
1577 | { | |
1578 | /* Cache the section contents for elf_link_input_bfd. */ | |
1579 | elf_section_data (sec)->this_hdr.contents = contents; | |
1580 | } | |
1581 | free_contents = NULL; | |
1582 | } | |
1583 | ||
1584 | if (free_extsyms != NULL) | |
1585 | { | |
1586 | if (! link_info->keep_memory) | |
1587 | free (free_extsyms); | |
1588 | else | |
1589 | { | |
1590 | /* Cache the symbols for elf_link_input_bfd. */ | |
1591 | symtab_hdr->contents = extsyms; | |
1592 | } | |
1593 | free_extsyms = NULL; | |
1594 | } | |
1595 | ||
1596 | return true; | |
1597 | ||
1598 | error_return: | |
1599 | if (free_relocs != NULL) | |
1600 | free (free_relocs); | |
1601 | if (free_contents != NULL) | |
1602 | free (free_contents); | |
1603 | if (free_extsyms != NULL) | |
1604 | free (free_extsyms); | |
1605 | return false; | |
1606 | } | |
1607 | ||
1608 | /* Delete some bytes from a section while relaxing. */ | |
1609 | ||
1610 | static boolean | |
1611 | m32r_elf_relax_delete_bytes (abfd, sec, addr, count) | |
1612 | bfd *abfd; | |
1613 | asection *sec; | |
1614 | bfd_vma addr; | |
1615 | int count; | |
1616 | { | |
1617 | Elf_Internal_Shdr *symtab_hdr; | |
1618 | Elf32_External_Sym *extsyms; | |
1619 | int shndx, index; | |
1620 | bfd_byte *contents; | |
1621 | Elf_Internal_Rela *irel, *irelend; | |
1622 | Elf_Internal_Rela *irelalign; | |
1623 | bfd_vma toaddr; | |
1624 | Elf32_External_Sym *esym, *esymend; | |
1625 | struct elf_link_hash_entry *sym_hash; | |
1626 | ||
1627 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1628 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1629 | ||
1630 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1631 | ||
1632 | contents = elf_section_data (sec)->this_hdr.contents; | |
1633 | ||
1634 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
1635 | power larger than the number of bytes we are deleting. */ | |
1636 | ||
1637 | irelalign = NULL; | |
1638 | toaddr = sec->_cooked_size; | |
1639 | ||
1640 | irel = elf_section_data (sec)->relocs; | |
1641 | irelend = irel + sec->reloc_count; | |
1642 | ||
1643 | /* Actually delete the bytes. */ | |
1644 | memmove (contents + addr, contents + addr + count, toaddr - addr - count); | |
1645 | sec->_cooked_size -= count; | |
1646 | ||
1647 | /* Adjust all the relocs. */ | |
1648 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1649 | { | |
1650 | /* Get the new reloc address. */ | |
1651 | if ((irel->r_offset > addr | |
1652 | && irel->r_offset < toaddr)) | |
1653 | irel->r_offset -= count; | |
1654 | } | |
1655 | ||
1656 | /* Adjust the local symbols defined in this section. */ | |
1657 | esym = extsyms; | |
1658 | esymend = esym + symtab_hdr->sh_info; | |
1659 | for (; esym < esymend; esym++) | |
1660 | { | |
1661 | Elf_Internal_Sym isym; | |
1662 | ||
1663 | bfd_elf32_swap_symbol_in (abfd, esym, &isym); | |
1664 | ||
1665 | if (isym.st_shndx == shndx | |
1666 | && isym.st_value > addr | |
1667 | && isym.st_value < toaddr) | |
1668 | { | |
1669 | isym.st_value -= count; | |
1670 | bfd_elf32_swap_symbol_out (abfd, &isym, esym); | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | /* Now adjust the global symbols defined in this section. */ | |
1675 | esym = extsyms + symtab_hdr->sh_info; | |
1676 | esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); | |
1677 | for (index = 0; esym < esymend; esym++, index++) | |
1678 | { | |
1679 | Elf_Internal_Sym isym; | |
1680 | ||
1681 | bfd_elf32_swap_symbol_in (abfd, esym, &isym); | |
1682 | sym_hash = elf_sym_hashes (abfd)[index]; | |
1683 | if (isym.st_shndx == shndx | |
1684 | && ((sym_hash)->root.type == bfd_link_hash_defined | |
1685 | || (sym_hash)->root.type == bfd_link_hash_defweak) | |
1686 | && (sym_hash)->root.u.def.section == sec | |
1687 | && (sym_hash)->root.u.def.value > addr | |
1688 | && (sym_hash)->root.u.def.value < toaddr) | |
1689 | { | |
1690 | (sym_hash)->root.u.def.value -= count; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | return true; | |
1695 | } | |
1696 | ||
1697 | /* This is a version of bfd_generic_get_relocated_section_contents | |
1698 | which uses m32r_elf_relocate_section. */ | |
1699 | ||
1700 | static bfd_byte * | |
1701 | m32r_elf_get_relocated_section_contents (output_bfd, link_info, link_order, | |
1702 | data, relocateable, symbols) | |
1703 | bfd *output_bfd; | |
1704 | struct bfd_link_info *link_info; | |
1705 | struct bfd_link_order *link_order; | |
1706 | bfd_byte *data; | |
1707 | boolean relocateable; | |
1708 | asymbol **symbols; | |
1709 | { | |
1710 | Elf_Internal_Shdr *symtab_hdr; | |
1711 | asection *input_section = link_order->u.indirect.section; | |
1712 | bfd *input_bfd = input_section->owner; | |
1713 | asection **sections = NULL; | |
1714 | Elf_Internal_Rela *internal_relocs = NULL; | |
1715 | Elf32_External_Sym *external_syms = NULL; | |
1716 | Elf_Internal_Sym *internal_syms = NULL; | |
1717 | ||
1718 | /* We only need to handle the case of relaxing, or of having a | |
1719 | particular set of section contents, specially. */ | |
1720 | if (relocateable | |
1721 | || elf_section_data (input_section)->this_hdr.contents == NULL) | |
1722 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
1723 | link_order, data, | |
1724 | relocateable, | |
1725 | symbols); | |
1726 | ||
1727 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1728 | ||
1729 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
1730 | input_section->_raw_size); | |
1731 | ||
1732 | if ((input_section->flags & SEC_RELOC) != 0 | |
1733 | && input_section->reloc_count > 0) | |
1734 | { | |
1735 | Elf_Internal_Sym *isymp; | |
1736 | asection **secpp; | |
1737 | Elf32_External_Sym *esym, *esymend; | |
1738 | ||
1739 | if (symtab_hdr->contents != NULL) | |
1740 | external_syms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1741 | else | |
1742 | { | |
1743 | external_syms = ((Elf32_External_Sym *) | |
1744 | bfd_malloc (symtab_hdr->sh_info | |
1745 | * sizeof (Elf32_External_Sym))); | |
1746 | if (external_syms == NULL && symtab_hdr->sh_info > 0) | |
1747 | goto error_return; | |
1748 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1749 | || (bfd_read (external_syms, sizeof (Elf32_External_Sym), | |
1750 | symtab_hdr->sh_info, input_bfd) | |
1751 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) | |
1752 | goto error_return; | |
1753 | } | |
1754 | ||
1755 | internal_relocs = (_bfd_elf32_link_read_relocs | |
1756 | (input_bfd, input_section, (PTR) NULL, | |
1757 | (Elf_Internal_Rela *) NULL, false)); | |
1758 | if (internal_relocs == NULL) | |
1759 | goto error_return; | |
1760 | ||
1761 | internal_syms = ((Elf_Internal_Sym *) | |
1762 | bfd_malloc (symtab_hdr->sh_info | |
1763 | * sizeof (Elf_Internal_Sym))); | |
1764 | if (internal_syms == NULL && symtab_hdr->sh_info > 0) | |
1765 | goto error_return; | |
1766 | ||
1767 | sections = (asection **) bfd_malloc (symtab_hdr->sh_info | |
1768 | * sizeof (asection *)); | |
1769 | if (sections == NULL && symtab_hdr->sh_info > 0) | |
1770 | goto error_return; | |
1771 | ||
1772 | isymp = internal_syms; | |
1773 | secpp = sections; | |
1774 | esym = external_syms; | |
1775 | esymend = esym + symtab_hdr->sh_info; | |
1776 | for (; esym < esymend; ++esym, ++isymp, ++secpp) | |
1777 | { | |
1778 | asection *isec; | |
1779 | ||
1780 | bfd_elf32_swap_symbol_in (input_bfd, esym, isymp); | |
1781 | ||
1782 | if (isymp->st_shndx == SHN_UNDEF) | |
1783 | isec = bfd_und_section_ptr; | |
1784 | else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE) | |
1785 | isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx); | |
1786 | else if (isymp->st_shndx == SHN_ABS) | |
1787 | isec = bfd_abs_section_ptr; | |
1788 | else if (isymp->st_shndx == SHN_COMMON) | |
1789 | isec = bfd_com_section_ptr; | |
1790 | else if (isymp->st_shndx == SHN_M32R_SCOMMON) | |
1791 | isec = &m32r_elf_scom_section; | |
1792 | else | |
1793 | { | |
1794 | /* Who knows? */ | |
1795 | isec = NULL; | |
1796 | } | |
1797 | ||
1798 | *secpp = isec; | |
1799 | } | |
1800 | ||
1801 | if (! m32r_elf_relocate_section (output_bfd, link_info, input_bfd, | |
1802 | input_section, data, internal_relocs, | |
1803 | internal_syms, sections)) | |
1804 | goto error_return; | |
1805 | ||
1806 | if (sections != NULL) | |
1807 | free (sections); | |
1808 | sections = NULL; | |
1809 | if (internal_syms != NULL) | |
1810 | free (internal_syms); | |
1811 | internal_syms = NULL; | |
1812 | if (external_syms != NULL && symtab_hdr->contents == NULL) | |
1813 | free (external_syms); | |
1814 | external_syms = NULL; | |
1815 | if (internal_relocs != elf_section_data (input_section)->relocs) | |
1816 | free (internal_relocs); | |
1817 | internal_relocs = NULL; | |
1818 | } | |
1819 | ||
1820 | return data; | |
1821 | ||
1822 | error_return: | |
1823 | if (internal_relocs != NULL | |
1824 | && internal_relocs != elf_section_data (input_section)->relocs) | |
1825 | free (internal_relocs); | |
1826 | if (external_syms != NULL && symtab_hdr->contents == NULL) | |
1827 | free (external_syms); | |
1828 | if (internal_syms != NULL) | |
1829 | free (internal_syms); | |
1830 | if (sections != NULL) | |
1831 | free (sections); | |
1832 | return NULL; | |
1833 | } | |
1834 | ||
1835 | #endif /* #if 0 */ | |
1836 | \f | |
1837 | /* Set the right machine number. */ | |
1838 | static boolean | |
1839 | m32r_elf_object_p (abfd) | |
1840 | bfd *abfd; | |
1841 | { | |
1842 | switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) | |
1843 | { | |
1844 | default: | |
1845 | case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; | |
e916b64e | 1846 | case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; |
252b5132 RH |
1847 | } |
1848 | return true; | |
1849 | } | |
1850 | ||
1851 | /* Store the machine number in the flags field. */ | |
1852 | static void | |
1853 | m32r_elf_final_write_processing (abfd, linker) | |
1854 | bfd * abfd; | |
5f771d47 | 1855 | boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
1856 | { |
1857 | unsigned long val; | |
1858 | ||
1859 | switch (bfd_get_mach (abfd)) | |
1860 | { | |
1861 | default: | |
1862 | case bfd_mach_m32r: val = E_M32R_ARCH; break; | |
e916b64e | 1863 | case bfd_mach_m32rx: val = E_M32RX_ARCH; break; |
252b5132 RH |
1864 | } |
1865 | ||
1866 | elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; | |
1867 | elf_elfheader (abfd)->e_flags |= val; | |
1868 | } | |
1869 | ||
1870 | /* Function to keep M32R specific file flags. */ | |
1871 | static boolean | |
1872 | m32r_elf_set_private_flags (abfd, flags) | |
1873 | bfd * abfd; | |
1874 | flagword flags; | |
1875 | { | |
1876 | BFD_ASSERT (!elf_flags_init (abfd) | |
1877 | || elf_elfheader (abfd)->e_flags == flags); | |
1878 | ||
1879 | elf_elfheader (abfd)->e_flags = flags; | |
1880 | elf_flags_init (abfd) = true; | |
1881 | return true; | |
1882 | } | |
1883 | ||
1884 | /* Copy backend specific data from one object module to another */ | |
1885 | static boolean | |
1886 | m32r_elf_copy_private_bfd_data (ibfd, obfd) | |
1887 | bfd * ibfd; | |
1888 | bfd * obfd; | |
1889 | { | |
1890 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1891 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1892 | return true; | |
1893 | ||
1894 | BFD_ASSERT (!elf_flags_init (obfd) | |
1895 | || (elf_elfheader (obfd)->e_flags | |
1896 | == elf_elfheader (ibfd)->e_flags)); | |
1897 | ||
1898 | elf_gp (obfd) = elf_gp (ibfd); | |
1899 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
1900 | elf_flags_init (obfd) = true; | |
1901 | return true; | |
1902 | } | |
1903 | ||
1904 | /* Merge backend specific data from an object file to the output | |
1905 | object file when linking. */ | |
1906 | static boolean | |
1907 | m32r_elf_merge_private_bfd_data (ibfd, obfd) | |
1908 | bfd * ibfd; | |
1909 | bfd * obfd; | |
1910 | { | |
1911 | flagword out_flags; | |
1912 | flagword in_flags; | |
1913 | ||
1914 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1915 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1916 | return true; | |
1917 | ||
1918 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1919 | out_flags = elf_elfheader (obfd)->e_flags; | |
1920 | ||
1921 | if (! elf_flags_init (obfd)) | |
1922 | { | |
1923 | /* If the input is the default architecture then do not | |
1924 | bother setting the flags for the output architecture, | |
1925 | instead allow future merges to do this. If no future | |
1926 | merges ever set these flags then they will retain their | |
1927 | unitialised values, which surprise surprise, correspond | |
1928 | to the default values. */ | |
1929 | if (bfd_get_arch_info (ibfd)->the_default) | |
1930 | return true; | |
1931 | ||
1932 | elf_flags_init (obfd) = true; | |
1933 | elf_elfheader (obfd)->e_flags = in_flags; | |
1934 | ||
1935 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1936 | && bfd_get_arch_info (obfd)->the_default) | |
1937 | { | |
1938 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
1939 | } | |
1940 | ||
1941 | return true; | |
1942 | } | |
1943 | ||
1944 | /* Check flag compatibility. */ | |
1945 | if (in_flags == out_flags) | |
1946 | return true; | |
1947 | ||
1948 | if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) | |
1949 | { | |
1950 | if ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) | |
1951 | { | |
1952 | _bfd_error_handler (_("%s: Instruction set mismatch with previous modules"), | |
1953 | bfd_get_filename (ibfd)); | |
1954 | ||
1955 | bfd_set_error (bfd_error_bad_value); | |
1956 | return false; | |
1957 | } | |
1958 | } | |
1959 | ||
1960 | return true; | |
1961 | } | |
1962 | ||
1963 | /* Display the flags field */ | |
1964 | static boolean | |
1965 | m32r_elf_print_private_bfd_data (abfd, ptr) | |
1966 | bfd * abfd; | |
1967 | PTR ptr; | |
1968 | { | |
1969 | FILE * file = (FILE *) ptr; | |
1970 | ||
1971 | BFD_ASSERT (abfd != NULL && ptr != NULL) | |
1972 | ||
1973 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1974 | ||
1975 | fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); | |
1976 | ||
1977 | switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) | |
1978 | { | |
1979 | default: | |
1980 | case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; | |
e916b64e | 1981 | case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; |
252b5132 RH |
1982 | } |
1983 | ||
1984 | fputc ('\n', file); | |
1985 | ||
1986 | return true; | |
1987 | } | |
1988 | ||
1989 | asection * | |
1990 | m32r_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
1991 | bfd *abfd; | |
5f771d47 | 1992 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1993 | Elf_Internal_Rela *rel; |
1994 | struct elf_link_hash_entry *h; | |
1995 | Elf_Internal_Sym *sym; | |
1996 | { | |
1997 | if (h != NULL) | |
1998 | { | |
1999 | switch (ELF32_R_TYPE (rel->r_info)) | |
2000 | { | |
2001 | case R_M32R_GNU_VTINHERIT: | |
2002 | case R_M32R_GNU_VTENTRY: | |
2003 | break; | |
2004 | ||
2005 | default: | |
2006 | switch (h->root.type) | |
2007 | { | |
2008 | case bfd_link_hash_defined: | |
2009 | case bfd_link_hash_defweak: | |
2010 | return h->root.u.def.section; | |
2011 | ||
2012 | case bfd_link_hash_common: | |
2013 | return h->root.u.c.p->section; | |
e049a0de ILT |
2014 | |
2015 | default: | |
2016 | break; | |
252b5132 RH |
2017 | } |
2018 | } | |
2019 | } | |
2020 | else | |
2021 | { | |
2022 | if (!(elf_bad_symtab (abfd) | |
2023 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
2024 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
2025 | && sym->st_shndx != SHN_COMMON)) | |
2026 | { | |
2027 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
2028 | } | |
2029 | } | |
2030 | return NULL; | |
2031 | } | |
2032 | ||
2033 | static boolean | |
2034 | m32r_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
5f771d47 ILT |
2035 | bfd *abfd ATTRIBUTE_UNUSED; |
2036 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
2037 | asection *sec ATTRIBUTE_UNUSED; | |
2038 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
252b5132 RH |
2039 | { |
2040 | /* we don't use got and plt entries for m32r */ | |
2041 | return true; | |
2042 | } | |
2043 | ||
2044 | ||
2045 | /* Look through the relocs for a section during the first phase. | |
2046 | Since we don't do .gots or .plts, we just need to consider the | |
2047 | virtual table relocs for gc. */ | |
2048 | ||
2049 | static boolean | |
2050 | m32r_elf_check_relocs (abfd, info, sec, relocs) | |
2051 | bfd *abfd; | |
2052 | struct bfd_link_info *info; | |
2053 | asection *sec; | |
2054 | const Elf_Internal_Rela *relocs; | |
2055 | { | |
2056 | Elf_Internal_Shdr *symtab_hdr; | |
2057 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
2058 | const Elf_Internal_Rela *rel; | |
2059 | const Elf_Internal_Rela *rel_end; | |
2060 | ||
2061 | if (info->relocateable) | |
2062 | return true; | |
2063 | ||
2064 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2065 | sym_hashes = elf_sym_hashes (abfd); | |
2066 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
2067 | if (!elf_bad_symtab (abfd)) | |
2068 | sym_hashes_end -= symtab_hdr->sh_info; | |
2069 | ||
2070 | rel_end = relocs + sec->reloc_count; | |
2071 | for (rel = relocs; rel < rel_end; rel++) | |
2072 | { | |
2073 | struct elf_link_hash_entry *h; | |
2074 | unsigned long r_symndx; | |
2075 | ||
2076 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2077 | if (r_symndx < symtab_hdr->sh_info) | |
2078 | h = NULL; | |
2079 | else | |
2080 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2081 | ||
2082 | switch (ELF32_R_TYPE (rel->r_info)) | |
2083 | { | |
2084 | /* This relocation describes the C++ object vtable hierarchy. | |
2085 | Reconstruct it for later use during GC. */ | |
2086 | case R_M32R_GNU_VTINHERIT: | |
2087 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
2088 | return false; | |
2089 | break; | |
2090 | ||
2091 | /* This relocation describes which C++ vtable entries are actually | |
2092 | used. Record for later use during GC. */ | |
2093 | case R_M32R_GNU_VTENTRY: | |
2094 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
2095 | return false; | |
2096 | break; | |
2097 | } | |
2098 | } | |
2099 | ||
2100 | return true; | |
2101 | } | |
2102 | ||
2103 | ||
2104 | \f | |
2105 | ||
2106 | #define ELF_ARCH bfd_arch_m32r | |
2107 | #define ELF_MACHINE_CODE EM_CYGNUS_M32R | |
e916b64e | 2108 | #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ |
252b5132 RH |
2109 | |
2110 | #define TARGET_BIG_SYM bfd_elf32_m32r_vec | |
2111 | #define TARGET_BIG_NAME "elf32-m32r" | |
2112 | ||
2113 | #define elf_info_to_howto 0 | |
2114 | #define elf_info_to_howto_rel m32r_info_to_howto_rel | |
2115 | #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section | |
2116 | #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing | |
2117 | #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook | |
2118 | #define elf_backend_relocate_section m32r_elf_relocate_section | |
2119 | #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook | |
2120 | #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook | |
2121 | #define elf_backend_check_relocs m32r_elf_check_relocs | |
2122 | ||
2123 | #define elf_backend_can_gc_sections 1 | |
2124 | #if 0 /* not yet */ | |
2125 | /* relax support */ | |
2126 | #define bfd_elf32_bfd_relax_section m32r_elf_relax_section | |
2127 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
2128 | m32r_elf_get_relocated_section_contents | |
2129 | #endif | |
2130 | ||
2131 | #define elf_backend_object_p m32r_elf_object_p | |
2132 | #define elf_backend_final_write_processing m32r_elf_final_write_processing | |
2133 | #define bfd_elf32_bfd_copy_private_bfd_data m32r_elf_copy_private_bfd_data | |
2134 | #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data | |
2135 | #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags | |
2136 | #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data | |
2137 | ||
2138 | #include "elf32-target.h" |