Commit | Line | Data |
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49f58d10 | 1 | /* M16C/M32C specific support for 32-bit ELF. |
219d1afa | 2 | Copyright (C) 2005-2018 Free Software Foundation, Inc. |
49f58d10 JB |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
49f58d10 JB |
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 | |
863f7a5f NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
49f58d10 | 20 | |
49f58d10 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
49f58d10 JB |
23 | #include "libbfd.h" |
24 | #include "elf-bfd.h" | |
25 | #include "elf/m32c.h" | |
26 | #include "libiberty.h" | |
27 | ||
28 | /* Forward declarations. */ | |
29 | static reloc_howto_type * m32c_reloc_type_lookup | |
30 | (bfd *, bfd_reloc_code_real_type); | |
68ffbac6 | 31 | static void m32c_info_to_howto_rela |
49f58d10 | 32 | (bfd *, arelent *, Elf_Internal_Rela *); |
68ffbac6 | 33 | static bfd_boolean m32c_elf_relocate_section |
49f58d10 | 34 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); |
49f58d10 JB |
35 | static bfd_boolean m32c_elf_check_relocs |
36 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
37 | static bfd_boolean m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int); | |
38 | #ifdef DEBUG | |
e460dd0d AM |
39 | char * m32c_get_reloc (long reloc); |
40 | void dump_symtab (bfd *, void *, void *); | |
49f58d10 JB |
41 | #endif |
42 | static bfd_boolean m32c_elf_relax_section | |
43 | (bfd *abfd, asection *sec, struct bfd_link_info *link_info, bfd_boolean *again); | |
055173ca DD |
44 | static bfd_reloc_status_type m32c_apply_reloc_24 |
45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
49f58d10 JB |
46 | |
47 | ||
48 | static reloc_howto_type m32c_elf_howto_table [] = | |
49 | { | |
50 | /* This reloc does nothing. */ | |
51 | HOWTO (R_M32C_NONE, /* type */ | |
52 | 0, /* rightshift */ | |
6346d5ca AM |
53 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
54 | 0, /* bitsize */ | |
49f58d10 JB |
55 | FALSE, /* pc_relative */ |
56 | 0, /* bitpos */ | |
6346d5ca | 57 | complain_overflow_dont, /* complain_on_overflow */ |
49f58d10 JB |
58 | bfd_elf_generic_reloc, /* special_function */ |
59 | "R_M32C_NONE", /* name */ | |
60 | FALSE, /* partial_inplace */ | |
61 | 0, /* src_mask */ | |
62 | 0, /* dst_mask */ | |
63 | FALSE), /* pcrel_offset */ | |
64 | ||
78eba9b6 DD |
65 | /* GCC intentionally overflows these next two in order to work |
66 | around limitations in the addressing modes, so don't complain | |
67 | about overflow. */ | |
49f58d10 JB |
68 | HOWTO (R_M32C_16, /* type */ |
69 | 0, /* rightshift */ | |
70 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
71 | 16, /* bitsize */ | |
72 | FALSE, /* pc_relative */ | |
73 | 0, /* bitpos */ | |
78eba9b6 | 74 | complain_overflow_dont, /* complain_on_overflow */ |
49f58d10 JB |
75 | bfd_elf_generic_reloc, /* special_function */ |
76 | "R_M32C_16", /* name */ | |
77 | FALSE, /* partial_inplace */ | |
78 | 0, /* src_mask */ | |
6772dd07 | 79 | 0xffff, /* dst_mask */ |
49f58d10 JB |
80 | FALSE), /* pcrel_offset */ |
81 | ||
82 | HOWTO (R_M32C_24, /* type */ | |
83 | 0, /* rightshift */ | |
84 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
85 | 24, /* bitsize */ | |
86 | FALSE, /* pc_relative */ | |
87 | 0, /* bitpos */ | |
78eba9b6 | 88 | complain_overflow_dont, /* complain_on_overflow */ |
055173ca | 89 | m32c_apply_reloc_24, /* special_function */ |
49f58d10 JB |
90 | "R_M32C_24", /* name */ |
91 | FALSE, /* partial_inplace */ | |
92 | 0, /* src_mask */ | |
6772dd07 | 93 | 0xffffff, /* dst_mask */ |
49f58d10 JB |
94 | FALSE), /* pcrel_offset */ |
95 | ||
96 | HOWTO (R_M32C_32, /* type */ | |
97 | 0, /* rightshift */ | |
98 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
99 | 32, /* bitsize */ | |
100 | FALSE, /* pc_relative */ | |
101 | 0, /* bitpos */ | |
102 | complain_overflow_bitfield, /* complain_on_overflow */ | |
103 | bfd_elf_generic_reloc, /* special_function */ | |
104 | "R_M32C_32", /* name */ | |
105 | FALSE, /* partial_inplace */ | |
106 | 0, /* src_mask */ | |
107 | 0xffffffff, /* dst_mask */ | |
108 | FALSE), /* pcrel_offset */ | |
109 | ||
110 | HOWTO (R_M32C_8_PCREL, /* type */ | |
111 | 0, /* rightshift */ | |
112 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
113 | 8, /* bitsize */ | |
114 | TRUE, /* pc_relative */ | |
115 | 0, /* bitpos */ | |
116 | complain_overflow_signed, /* complain_on_overflow */ | |
117 | bfd_elf_generic_reloc, /* special_function */ | |
118 | "R_M32C_8_PCREL", /* name */ | |
119 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
120 | 0, /* src_mask */ |
121 | 0xff, /* dst_mask */ | |
122 | TRUE), /* pcrel_offset */ | |
49f58d10 JB |
123 | |
124 | HOWTO (R_M32C_16_PCREL, /* type */ | |
125 | 0, /* rightshift */ | |
126 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
127 | 16, /* bitsize */ | |
128 | TRUE, /* pc_relative */ | |
129 | 0, /* bitpos */ | |
130 | complain_overflow_signed, /* complain_on_overflow */ | |
131 | bfd_elf_generic_reloc, /* special_function */ | |
132 | "R_M32C_16_PCREL", /* name */ | |
133 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
134 | 0, /* src_mask */ |
135 | 0xffff, /* dst_mask */ | |
136 | TRUE), /* pcrel_offset */ | |
fd54057a DD |
137 | |
138 | HOWTO (R_M32C_8, /* type */ | |
139 | 0, /* rightshift */ | |
140 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
141 | 8, /* bitsize */ | |
142 | FALSE, /* pc_relative */ | |
143 | 0, /* bitpos */ | |
144 | complain_overflow_unsigned, /* complain_on_overflow */ | |
145 | bfd_elf_generic_reloc, /* special_function */ | |
146 | "R_M32C_8", /* name */ | |
147 | FALSE, /* partial_inplace */ | |
07d6d2b8 | 148 | 0, /* src_mask */ |
6772dd07 | 149 | 0xff, /* dst_mask */ |
07d6d2b8 | 150 | FALSE), /* pcrel_offset */ |
fd54057a DD |
151 | |
152 | HOWTO (R_M32C_LO16, /* type */ | |
153 | 0, /* rightshift */ | |
154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
155 | 16, /* bitsize */ | |
156 | FALSE, /* pc_relative */ | |
157 | 0, /* bitpos */ | |
158 | complain_overflow_dont, /* complain_on_overflow */ | |
159 | bfd_elf_generic_reloc, /* special_function */ | |
160 | "R_M32C_LO16", /* name */ | |
161 | FALSE, /* partial_inplace */ | |
07d6d2b8 | 162 | 0, /* src_mask */ |
6772dd07 | 163 | 0xffff, /* dst_mask */ |
07d6d2b8 | 164 | FALSE), /* pcrel_offset */ |
fd54057a DD |
165 | |
166 | HOWTO (R_M32C_HI8, /* type */ | |
167 | 0, /* rightshift */ | |
168 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
169 | 8, /* bitsize */ | |
170 | FALSE, /* pc_relative */ | |
171 | 0, /* bitpos */ | |
172 | complain_overflow_dont, /* complain_on_overflow */ | |
173 | bfd_elf_generic_reloc, /* special_function */ | |
174 | "R_M32C_HI8", /* name */ | |
175 | FALSE, /* partial_inplace */ | |
07d6d2b8 | 176 | 0, /* src_mask */ |
6772dd07 | 177 | 0xff, /* dst_mask */ |
07d6d2b8 | 178 | FALSE), /* pcrel_offset */ |
fd54057a DD |
179 | |
180 | HOWTO (R_M32C_HI16, /* type */ | |
181 | 0, /* rightshift */ | |
182 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
183 | 16, /* bitsize */ | |
184 | FALSE, /* pc_relative */ | |
185 | 0, /* bitpos */ | |
186 | complain_overflow_dont, /* complain_on_overflow */ | |
187 | bfd_elf_generic_reloc, /* special_function */ | |
188 | "R_M32C_HI16", /* name */ | |
189 | FALSE, /* partial_inplace */ | |
07d6d2b8 | 190 | 0, /* src_mask */ |
6772dd07 | 191 | 0xffff, /* dst_mask */ |
07d6d2b8 | 192 | FALSE), /* pcrel_offset */ |
6772dd07 DD |
193 | |
194 | HOWTO (R_M32C_RL_JUMP, /* type */ | |
195 | 0, /* rightshift */ | |
196 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
197 | 0, /* bitsize */ | |
198 | FALSE, /* pc_relative */ | |
199 | 0, /* bitpos */ | |
200 | complain_overflow_signed, /* complain_on_overflow */ | |
201 | bfd_elf_generic_reloc, /* special_function */ | |
202 | "R_M32C_RL_JUMP", /* name */ | |
203 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
204 | 0, /* src_mask */ |
205 | 0, /* dst_mask */ | |
206 | FALSE), /* pcrel_offset */ | |
6772dd07 DD |
207 | |
208 | HOWTO (R_M32C_RL_1ADDR, /* type */ | |
209 | 0, /* rightshift */ | |
210 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
211 | 0, /* bitsize */ | |
212 | FALSE, /* pc_relative */ | |
213 | 0, /* bitpos */ | |
214 | complain_overflow_signed, /* complain_on_overflow */ | |
215 | bfd_elf_generic_reloc, /* special_function */ | |
216 | "R_M32C_RL_1ADDR", /* name */ | |
217 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
218 | 0, /* src_mask */ |
219 | 0, /* dst_mask */ | |
220 | FALSE), /* pcrel_offset */ | |
6772dd07 DD |
221 | |
222 | HOWTO (R_M32C_RL_2ADDR, /* type */ | |
223 | 0, /* rightshift */ | |
224 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
225 | 0, /* bitsize */ | |
226 | FALSE, /* pc_relative */ | |
227 | 0, /* bitpos */ | |
228 | complain_overflow_signed, /* complain_on_overflow */ | |
229 | bfd_elf_generic_reloc, /* special_function */ | |
230 | "R_M32C_RL_2ADDR", /* name */ | |
231 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
232 | 0, /* src_mask */ |
233 | 0, /* dst_mask */ | |
234 | FALSE), /* pcrel_offset */ | |
6772dd07 | 235 | |
49f58d10 JB |
236 | }; |
237 | \f | |
238 | /* Map BFD reloc types to M32C ELF reloc types. */ | |
239 | ||
240 | struct m32c_reloc_map | |
241 | { | |
242 | bfd_reloc_code_real_type bfd_reloc_val; | |
243 | unsigned int m32c_reloc_val; | |
244 | }; | |
245 | ||
246 | static const struct m32c_reloc_map m32c_reloc_map [] = | |
247 | { | |
248 | { BFD_RELOC_NONE, R_M32C_NONE }, | |
249 | { BFD_RELOC_16, R_M32C_16 }, | |
07d6d2b8 | 250 | { BFD_RELOC_24, R_M32C_24 }, |
49f58d10 | 251 | { BFD_RELOC_32, R_M32C_32 }, |
07d6d2b8 AM |
252 | { BFD_RELOC_8_PCREL, R_M32C_8_PCREL }, |
253 | { BFD_RELOC_16_PCREL, R_M32C_16_PCREL }, | |
fd54057a DD |
254 | { BFD_RELOC_8, R_M32C_8 }, |
255 | { BFD_RELOC_LO16, R_M32C_LO16 }, | |
256 | { BFD_RELOC_HI16, R_M32C_HI16 }, | |
6772dd07 DD |
257 | { BFD_RELOC_M32C_HI8, R_M32C_HI8 }, |
258 | { BFD_RELOC_M32C_RL_JUMP, R_M32C_RL_JUMP }, | |
259 | { BFD_RELOC_M32C_RL_1ADDR, R_M32C_RL_1ADDR }, | |
260 | { BFD_RELOC_M32C_RL_2ADDR, R_M32C_RL_2ADDR } | |
49f58d10 JB |
261 | }; |
262 | ||
263 | static reloc_howto_type * | |
264 | m32c_reloc_type_lookup | |
07d6d2b8 | 265 | (bfd * abfd ATTRIBUTE_UNUSED, |
49f58d10 JB |
266 | bfd_reloc_code_real_type code) |
267 | { | |
268 | unsigned int i; | |
269 | ||
0ba38529 | 270 | for (i = ARRAY_SIZE (m32c_reloc_map); i--;) |
49f58d10 JB |
271 | if (m32c_reloc_map [i].bfd_reloc_val == code) |
272 | return & m32c_elf_howto_table [m32c_reloc_map[i].m32c_reloc_val]; | |
68ffbac6 | 273 | |
49f58d10 JB |
274 | return NULL; |
275 | } | |
276 | ||
157090f7 AM |
277 | static reloc_howto_type * |
278 | m32c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
279 | { | |
280 | unsigned int i; | |
281 | ||
282 | for (i = 0; | |
283 | i < sizeof (m32c_elf_howto_table) / sizeof (m32c_elf_howto_table[0]); | |
284 | i++) | |
285 | if (m32c_elf_howto_table[i].name != NULL | |
286 | && strcasecmp (m32c_elf_howto_table[i].name, r_name) == 0) | |
287 | return &m32c_elf_howto_table[i]; | |
288 | ||
289 | return NULL; | |
290 | } | |
291 | ||
49f58d10 JB |
292 | /* Set the howto pointer for an M32C ELF reloc. */ |
293 | ||
294 | static void | |
295 | m32c_info_to_howto_rela | |
07d6d2b8 AM |
296 | (bfd * abfd ATTRIBUTE_UNUSED, |
297 | arelent * cache_ptr, | |
49f58d10 JB |
298 | Elf_Internal_Rela * dst) |
299 | { | |
300 | unsigned int r_type; | |
301 | ||
302 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
303 | if (r_type >= (unsigned int) R_M32C_max) |
304 | { | |
695344c0 | 305 | /* xgettext:c-format */ |
64d29018 | 306 | _bfd_error_handler (_("%B: invalid M32C reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
307 | r_type = 0; |
308 | } | |
49f58d10 JB |
309 | cache_ptr->howto = & m32c_elf_howto_table [r_type]; |
310 | } | |
311 | ||
312 | \f | |
313 | ||
055173ca DD |
314 | /* Apply R_M32C_24 relocations. We have to do this because it's not a |
315 | power-of-two size, and the generic code may think it overruns the | |
316 | section if it's right at the end. | |
317 | ||
318 | Must return something other than bfd_reloc_continue to avoid the | |
319 | above problem. Typical return values include bfd_reloc_ok or | |
320 | bfd_reloc_overflow. | |
321 | */ | |
322 | ||
323 | static bfd_reloc_status_type m32c_apply_reloc_24 (bfd *abfd ATTRIBUTE_UNUSED, | |
324 | arelent *reloc_entry, | |
325 | asymbol *symbol, | |
326 | void *vdata_start ATTRIBUTE_UNUSED, | |
327 | asection *input_section, | |
328 | bfd *ibfd ATTRIBUTE_UNUSED, | |
329 | char **error_msg ATTRIBUTE_UNUSED) | |
330 | { | |
331 | bfd_vma relocation; | |
332 | bfd_reloc_status_type s; | |
333 | ||
334 | s = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, | |
335 | vdata_start, | |
336 | input_section, ibfd, error_msg); | |
337 | if (s != bfd_reloc_continue) | |
338 | return s; | |
339 | ||
340 | /* Get symbol value. (Common symbols are special.) */ | |
341 | if (bfd_is_com_section (symbol->section)) | |
342 | relocation = 0; | |
343 | else | |
344 | relocation = symbol->value; | |
345 | ||
346 | relocation += symbol->section->output_offset; | |
347 | ||
348 | /* Add in supplied addend. */ | |
349 | relocation += reloc_entry->addend; | |
350 | ||
351 | reloc_entry->addend = relocation; | |
352 | reloc_entry->address += input_section->output_offset; | |
353 | return bfd_reloc_ok; | |
354 | } | |
355 | ||
49f58d10 JB |
356 | /* Relocate an M32C ELF section. |
357 | There is some attempt to make this function usable for many architectures, | |
358 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
359 | if only to serve as a learning tool. | |
360 | ||
361 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
362 | to handle the relocations for a section. | |
363 | ||
364 | The relocs are always passed as Rela structures; if the section | |
365 | actually uses Rel structures, the r_addend field will always be | |
366 | zero. | |
367 | ||
368 | This function is responsible for adjusting the section contents as | |
369 | necessary, and (if using Rela relocs and generating a relocatable | |
370 | output file) adjusting the reloc addend as necessary. | |
371 | ||
372 | This function does not have to worry about setting the reloc | |
373 | address or the reloc symbol index. | |
374 | ||
375 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
376 | ||
377 | LOCAL_SECTIONS is an array giving the section in the input file | |
378 | corresponding to the st_shndx field of each local symbol. | |
379 | ||
380 | The global hash table entry for the global symbols can be found | |
381 | via elf_sym_hashes (input_bfd). | |
382 | ||
383 | When generating relocatable output, this function must handle | |
384 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
385 | going to be the section symbol corresponding to the output | |
386 | section, which means that the addend must be adjusted | |
387 | accordingly. */ | |
388 | ||
389 | static bfd_boolean | |
390 | m32c_elf_relocate_section | |
07d6d2b8 | 391 | (bfd * output_bfd ATTRIBUTE_UNUSED, |
49f58d10 | 392 | struct bfd_link_info * info, |
07d6d2b8 AM |
393 | bfd * input_bfd, |
394 | asection * input_section, | |
395 | bfd_byte * contents, | |
49f58d10 | 396 | Elf_Internal_Rela * relocs, |
07d6d2b8 AM |
397 | Elf_Internal_Sym * local_syms, |
398 | asection ** local_sections) | |
49f58d10 | 399 | { |
07d6d2b8 | 400 | Elf_Internal_Shdr * symtab_hdr; |
49f58d10 | 401 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
402 | Elf_Internal_Rela * rel; |
403 | Elf_Internal_Rela * relend; | |
49f58d10 JB |
404 | asection *splt; |
405 | ||
406 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
407 | sym_hashes = elf_sym_hashes (input_bfd); | |
408 | relend = relocs + input_section->reloc_count; | |
409 | ||
ce558b89 | 410 | splt = elf_hash_table (info)->splt; |
49f58d10 JB |
411 | |
412 | for (rel = relocs; rel < relend; rel ++) | |
413 | { | |
07d6d2b8 AM |
414 | reloc_howto_type * howto; |
415 | unsigned long r_symndx; | |
416 | Elf_Internal_Sym * sym; | |
417 | asection * sec; | |
49f58d10 | 418 | struct elf_link_hash_entry * h; |
07d6d2b8 AM |
419 | bfd_vma relocation; |
420 | bfd_reloc_status_type r; | |
421 | const char * name = NULL; | |
422 | int r_type; | |
68ffbac6 | 423 | |
49f58d10 | 424 | r_type = ELF32_R_TYPE (rel->r_info); |
6772dd07 DD |
425 | |
426 | /* These are only used for relaxing; we don't actually relocate | |
427 | anything with them, so skip them. */ | |
428 | if (r_type == R_M32C_RL_JUMP | |
429 | || r_type == R_M32C_RL_1ADDR | |
430 | || r_type == R_M32C_RL_2ADDR) | |
431 | continue; | |
68ffbac6 | 432 | |
49f58d10 JB |
433 | r_symndx = ELF32_R_SYM (rel->r_info); |
434 | ||
49f58d10 JB |
435 | howto = m32c_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
436 | h = NULL; | |
437 | sym = NULL; | |
438 | sec = NULL; | |
ab96bf03 | 439 | relocation = 0; |
6772dd07 | 440 | |
49f58d10 JB |
441 | if (r_symndx < symtab_hdr->sh_info) |
442 | { | |
443 | sym = local_syms + r_symndx; | |
444 | sec = local_sections [r_symndx]; | |
445 | relocation = (sec->output_section->vma | |
446 | + sec->output_offset | |
447 | + sym->st_value); | |
68ffbac6 | 448 | |
49f58d10 JB |
449 | name = bfd_elf_string_from_elf_section |
450 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
6772dd07 | 451 | name = (sym->st_name == 0) ? bfd_section_name (input_bfd, sec) : name; |
49f58d10 JB |
452 | } |
453 | else | |
454 | { | |
455 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
68ffbac6 | 456 | |
8a5da09b AM |
457 | if (info->wrap_hash != NULL |
458 | && (input_section->flags & SEC_DEBUGGING) != 0) | |
459 | h = ((struct elf_link_hash_entry *) | |
460 | unwrap_hash_lookup (info, input_bfd, &h->root)); | |
461 | ||
49f58d10 JB |
462 | while (h->root.type == bfd_link_hash_indirect |
463 | || h->root.type == bfd_link_hash_warning) | |
464 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
465 | ||
466 | name = h->root.root.string; | |
68ffbac6 | 467 | |
49f58d10 JB |
468 | if (h->root.type == bfd_link_hash_defined |
469 | || h->root.type == bfd_link_hash_defweak) | |
470 | { | |
471 | sec = h->root.u.def.section; | |
472 | relocation = (h->root.u.def.value | |
473 | + sec->output_section->vma | |
474 | + sec->output_offset); | |
475 | } | |
476 | else if (h->root.type == bfd_link_hash_undefweak) | |
ab96bf03 | 477 | ; |
0e1862bb | 478 | else if (!bfd_link_relocatable (info)) |
1a72702b AM |
479 | (*info->callbacks->undefined_symbol) (info, h->root.root.string, |
480 | input_bfd, input_section, | |
481 | rel->r_offset, TRUE); | |
49f58d10 JB |
482 | } |
483 | ||
dbaa2011 | 484 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 485 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 486 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 487 | |
0e1862bb | 488 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
489 | { |
490 | /* This is a relocatable link. We don't have to change | |
07d6d2b8 AM |
491 | anything, unless the reloc is against a section symbol, |
492 | in which case we have to adjust according to where the | |
493 | section symbol winds up in the output section. */ | |
ab96bf03 AM |
494 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
495 | rel->r_addend += sec->output_offset; | |
496 | continue; | |
497 | } | |
498 | ||
49f58d10 JB |
499 | switch (ELF32_R_TYPE (rel->r_info)) |
500 | { | |
501 | case R_M32C_16: | |
502 | { | |
503 | bfd_vma *plt_offset; | |
504 | ||
505 | if (h != NULL) | |
506 | plt_offset = &h->plt.offset; | |
507 | else | |
508 | plt_offset = elf_local_got_offsets (input_bfd) + r_symndx; | |
509 | ||
510 | /* printf("%s: rel %x plt %d\n", h ? h->root.root.string : "(none)", | |
511 | relocation, *plt_offset);*/ | |
512 | if (relocation <= 0xffff) | |
513 | { | |
07d6d2b8 | 514 | /* If the symbol is in range for a 16-bit address, we should |
49f58d10 | 515 | have deallocated the plt entry in relax_section. */ |
07d6d2b8 | 516 | BFD_ASSERT (*plt_offset == (bfd_vma) -1); |
49f58d10 JB |
517 | } |
518 | else | |
519 | { | |
520 | /* If the symbol is out of range for a 16-bit address, | |
521 | we must have allocated a plt entry. */ | |
522 | BFD_ASSERT (*plt_offset != (bfd_vma) -1); | |
523 | ||
524 | /* If this is the first time we've processed this symbol, | |
525 | fill in the plt entry with the correct symbol address. */ | |
526 | if ((*plt_offset & 1) == 0) | |
527 | { | |
528 | unsigned int x; | |
529 | ||
530 | x = 0x000000fc; /* jmpf */ | |
531 | x |= (relocation << 8) & 0xffffff00; | |
532 | bfd_put_32 (input_bfd, x, splt->contents + *plt_offset); | |
533 | *plt_offset |= 1; | |
534 | } | |
535 | ||
536 | relocation = (splt->output_section->vma | |
537 | + splt->output_offset | |
538 | + (*plt_offset & -2)); | |
35520cb7 DD |
539 | if (name) |
540 | { | |
541 | char *newname = bfd_malloc (strlen(name)+5); | |
542 | strcpy (newname, name); | |
543 | strcat(newname, ".plt"); | |
544 | _bfd_generic_link_add_one_symbol (info, | |
545 | input_bfd, | |
546 | newname, | |
547 | BSF_FUNCTION | BSF_WEAK, | |
548 | splt, | |
549 | (*plt_offset & -2), | |
550 | 0, | |
551 | 1, | |
552 | 0, | |
553 | 0); | |
554 | } | |
49f58d10 JB |
555 | } |
556 | } | |
557 | break; | |
fd54057a DD |
558 | |
559 | case R_M32C_HI8: | |
560 | case R_M32C_HI16: | |
561 | relocation >>= 16; | |
562 | break; | |
49f58d10 JB |
563 | } |
564 | ||
6772dd07 | 565 | #if 0 |
a1013894 DD |
566 | printf ("relocate %s at %06lx relocation %06lx addend %ld ", |
567 | m32c_elf_howto_table[ELF32_R_TYPE(rel->r_info)].name, | |
568 | rel->r_offset + input_section->output_section->vma + input_section->output_offset, | |
569 | relocation, rel->r_addend); | |
6772dd07 DD |
570 | { |
571 | int i; | |
572 | for (i=0; i<4; i++) | |
a1013894 DD |
573 | printf (" %02x", contents[rel->r_offset+i]); |
574 | printf ("\n"); | |
6772dd07 DD |
575 | } |
576 | #endif | |
055173ca DD |
577 | switch (ELF32_R_TYPE(rel->r_info)) |
578 | { | |
579 | case R_M32C_24: | |
580 | /* Like m32c_apply_reloc_24, we must handle this one separately. */ | |
581 | relocation += rel->r_addend; | |
582 | ||
583 | /* Sanity check the address. */ | |
584 | if (rel->r_offset + 3 | |
585 | > bfd_get_section_limit_octets (input_bfd, input_section)) | |
586 | r = bfd_reloc_outofrange; | |
587 | else | |
588 | { | |
589 | bfd_put_8 (input_bfd, relocation & 0xff, contents + rel->r_offset); | |
590 | bfd_put_8 (input_bfd, (relocation >> 8) & 0xff, contents + rel->r_offset + 1); | |
591 | bfd_put_8 (input_bfd, (relocation >> 16) & 0xff, contents + rel->r_offset + 2); | |
592 | r = bfd_reloc_ok; | |
593 | } | |
594 | ||
595 | break; | |
596 | ||
597 | default: | |
598 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
599 | contents, rel->r_offset, relocation, | |
600 | rel->r_addend); | |
601 | break; | |
602 | } | |
49f58d10 JB |
603 | |
604 | if (r != bfd_reloc_ok) | |
605 | { | |
606 | const char * msg = (const char *) NULL; | |
607 | ||
608 | switch (r) | |
609 | { | |
610 | case bfd_reloc_overflow: | |
1a72702b | 611 | (*info->callbacks->reloc_overflow) |
49f58d10 JB |
612 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, |
613 | input_bfd, input_section, rel->r_offset); | |
614 | break; | |
68ffbac6 | 615 | |
49f58d10 | 616 | case bfd_reloc_undefined: |
1a72702b AM |
617 | (*info->callbacks->undefined_symbol) |
618 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
49f58d10 | 619 | break; |
68ffbac6 | 620 | |
49f58d10 JB |
621 | case bfd_reloc_outofrange: |
622 | msg = _("internal error: out of range error"); | |
623 | break; | |
624 | ||
625 | case bfd_reloc_notsupported: | |
626 | msg = _("internal error: unsupported relocation error"); | |
627 | break; | |
628 | ||
629 | case bfd_reloc_dangerous: | |
630 | msg = _("internal error: dangerous relocation"); | |
631 | break; | |
632 | ||
633 | default: | |
634 | msg = _("internal error: unknown error"); | |
635 | break; | |
636 | } | |
637 | ||
638 | if (msg) | |
1a72702b AM |
639 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
640 | input_section, rel->r_offset); | |
49f58d10 JB |
641 | } |
642 | } | |
643 | ||
644 | return TRUE; | |
645 | } | |
646 | \f | |
49f58d10 JB |
647 | /* We support 16-bit pointers to code above 64k by generating a thunk |
648 | below 64k containing a JMP instruction to the final address. */ | |
68ffbac6 | 649 | |
49f58d10 JB |
650 | static bfd_boolean |
651 | m32c_elf_check_relocs | |
07d6d2b8 | 652 | (bfd * abfd, |
49f58d10 | 653 | struct bfd_link_info * info, |
07d6d2b8 | 654 | asection * sec, |
49f58d10 JB |
655 | const Elf_Internal_Rela * relocs) |
656 | { | |
07d6d2b8 | 657 | Elf_Internal_Shdr * symtab_hdr; |
49f58d10 | 658 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
659 | const Elf_Internal_Rela * rel; |
660 | const Elf_Internal_Rela * rel_end; | |
49f58d10 JB |
661 | bfd_vma *local_plt_offsets; |
662 | asection *splt; | |
663 | bfd *dynobj; | |
68ffbac6 | 664 | |
0e1862bb | 665 | if (bfd_link_relocatable (info)) |
49f58d10 | 666 | return TRUE; |
68ffbac6 | 667 | |
49f58d10 JB |
668 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
669 | sym_hashes = elf_sym_hashes (abfd); | |
670 | local_plt_offsets = elf_local_got_offsets (abfd); | |
671 | splt = NULL; | |
672 | dynobj = elf_hash_table(info)->dynobj; | |
673 | ||
49f58d10 JB |
674 | rel_end = relocs + sec->reloc_count; |
675 | for (rel = relocs; rel < rel_end; rel++) | |
676 | { | |
677 | struct elf_link_hash_entry *h; | |
678 | unsigned long r_symndx; | |
679 | bfd_vma *offset; | |
68ffbac6 | 680 | |
49f58d10 JB |
681 | r_symndx = ELF32_R_SYM (rel->r_info); |
682 | if (r_symndx < symtab_hdr->sh_info) | |
07d6d2b8 | 683 | h = NULL; |
49f58d10 JB |
684 | else |
685 | { | |
686 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
687 | while (h->root.type == bfd_link_hash_indirect | |
688 | || h->root.type == bfd_link_hash_warning) | |
689 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
690 | } | |
68ffbac6 | 691 | |
49f58d10 | 692 | switch (ELF32_R_TYPE (rel->r_info)) |
07d6d2b8 | 693 | { |
49f58d10 JB |
694 | /* This relocation describes a 16-bit pointer to a function. |
695 | We may need to allocate a thunk in low memory; reserve memory | |
696 | for it now. */ | |
697 | case R_M32C_16: | |
698 | if (dynobj == NULL) | |
699 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
ce558b89 | 700 | splt = elf_hash_table (info)->splt; |
49f58d10 JB |
701 | if (splt == NULL) |
702 | { | |
ce558b89 AM |
703 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
704 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
705 | | SEC_READONLY | SEC_CODE); | |
706 | splt = bfd_make_section_anyway_with_flags (dynobj, ".plt", | |
707 | flags); | |
708 | elf_hash_table (info)->splt = splt; | |
709 | if (splt == NULL | |
710 | || ! bfd_set_section_alignment (dynobj, splt, 1)) | |
711 | return FALSE; | |
49f58d10 JB |
712 | } |
713 | ||
714 | if (h != NULL) | |
715 | offset = &h->plt.offset; | |
716 | else | |
717 | { | |
718 | if (local_plt_offsets == NULL) | |
719 | { | |
720 | size_t size; | |
721 | unsigned int i; | |
722 | ||
723 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
724 | local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
725 | if (local_plt_offsets == NULL) | |
726 | return FALSE; | |
727 | elf_local_got_offsets (abfd) = local_plt_offsets; | |
728 | ||
729 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
730 | local_plt_offsets[i] = (bfd_vma) -1; | |
731 | } | |
732 | offset = &local_plt_offsets[r_symndx]; | |
733 | } | |
734 | ||
735 | if (*offset == (bfd_vma) -1) | |
736 | { | |
737 | *offset = splt->size; | |
738 | splt->size += 4; | |
739 | } | |
740 | break; | |
07d6d2b8 | 741 | } |
49f58d10 | 742 | } |
68ffbac6 | 743 | |
49f58d10 JB |
744 | return TRUE; |
745 | } | |
746 | ||
747 | /* This must exist if dynobj is ever set. */ | |
748 | ||
749 | static bfd_boolean | |
750 | m32c_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
07d6d2b8 | 751 | struct bfd_link_info *info) |
49f58d10 | 752 | { |
ce558b89 AM |
753 | bfd *dynobj = elf_hash_table (info)->dynobj; |
754 | asection *splt = elf_hash_table (info)->splt; | |
49f58d10 JB |
755 | |
756 | /* As an extra sanity check, verify that all plt entries have | |
757 | been filled in. */ | |
758 | ||
ce558b89 | 759 | if (dynobj != NULL && splt != NULL) |
49f58d10 JB |
760 | { |
761 | bfd_byte *contents = splt->contents; | |
762 | unsigned int i, size = splt->size; | |
763 | for (i = 0; i < size; i += 4) | |
764 | { | |
765 | unsigned int x = bfd_get_32 (dynobj, contents + i); | |
766 | BFD_ASSERT (x != 0); | |
767 | } | |
768 | } | |
769 | ||
770 | return TRUE; | |
771 | } | |
772 | ||
773 | static bfd_boolean | |
774 | m32c_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
07d6d2b8 | 775 | struct bfd_link_info *info) |
49f58d10 JB |
776 | { |
777 | bfd *dynobj; | |
778 | asection *splt; | |
779 | ||
0e1862bb | 780 | if (bfd_link_relocatable (info)) |
49f58d10 JB |
781 | return TRUE; |
782 | ||
783 | dynobj = elf_hash_table (info)->dynobj; | |
784 | if (dynobj == NULL) | |
785 | return TRUE; | |
786 | ||
ce558b89 | 787 | splt = elf_hash_table (info)->splt; |
49f58d10 JB |
788 | BFD_ASSERT (splt != NULL); |
789 | ||
790 | splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size); | |
791 | if (splt->contents == NULL) | |
792 | return FALSE; | |
793 | ||
794 | return TRUE; | |
795 | } | |
796 | \f | |
797 | /* Function to set the ELF flag bits. */ | |
798 | ||
799 | static bfd_boolean | |
800 | m32c_elf_set_private_flags (bfd *abfd, flagword flags) | |
801 | { | |
802 | elf_elfheader (abfd)->e_flags = flags; | |
803 | elf_flags_init (abfd) = TRUE; | |
804 | return TRUE; | |
805 | } | |
806 | ||
807 | /* Merge backend specific data from an object file to the output | |
808 | object file when linking. */ | |
809 | ||
810 | static bfd_boolean | |
50e03d47 | 811 | m32c_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
49f58d10 | 812 | { |
50e03d47 | 813 | bfd *obfd = info->output_bfd; |
49f58d10 JB |
814 | flagword old_flags, old_partial; |
815 | flagword new_flags, new_partial; | |
816 | bfd_boolean error = FALSE; | |
817 | char new_opt[80]; | |
818 | char old_opt[80]; | |
819 | ||
820 | new_opt[0] = old_opt[0] = '\0'; | |
821 | new_flags = elf_elfheader (ibfd)->e_flags; | |
822 | old_flags = elf_elfheader (obfd)->e_flags; | |
823 | ||
824 | #ifdef DEBUG | |
4eca0228 | 825 | _bfd_error_handler |
d42c267e | 826 | ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %s", |
4eca0228 AM |
827 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", |
828 | bfd_get_filename (ibfd)); | |
49f58d10 JB |
829 | #endif |
830 | ||
831 | if (!elf_flags_init (obfd)) | |
832 | { | |
833 | /* First call, no flags set. */ | |
834 | elf_flags_init (obfd) = TRUE; | |
835 | elf_elfheader (obfd)->e_flags = new_flags; | |
836 | } | |
837 | ||
838 | else if (new_flags == old_flags) | |
839 | /* Compatible flags are ok. */ | |
840 | ; | |
841 | ||
842 | else /* Possibly incompatible flags. */ | |
843 | { | |
844 | /* Warn if different cpu is used (allow a specific cpu to override | |
845 | the generic cpu). */ | |
846 | new_partial = (new_flags & EF_M32C_CPU_MASK); | |
847 | old_partial = (old_flags & EF_M32C_CPU_MASK); | |
848 | if (new_partial == old_partial) | |
849 | ; | |
850 | ||
851 | else | |
852 | { | |
853 | switch (new_partial) | |
854 | { | |
855 | default: strcat (new_opt, " -m16c"); break; | |
856 | case EF_M32C_CPU_M16C: strcat (new_opt, " -m16c"); break; | |
857 | case EF_M32C_CPU_M32C: strcat (new_opt, " -m32c"); break; | |
858 | } | |
859 | ||
860 | switch (old_partial) | |
861 | { | |
862 | default: strcat (old_opt, " -m16c"); break; | |
863 | case EF_M32C_CPU_M16C: strcat (old_opt, " -m16c"); break; | |
864 | case EF_M32C_CPU_M32C: strcat (old_opt, " -m32c"); break; | |
865 | } | |
866 | } | |
68ffbac6 | 867 | |
49f58d10 JB |
868 | /* Print out any mismatches from above. */ |
869 | if (new_opt[0]) | |
870 | { | |
871 | error = TRUE; | |
4eca0228 | 872 | _bfd_error_handler |
695344c0 | 873 | /* xgettext:c-format */ |
dae82561 AM |
874 | (_("%B: compiled with %s and linked with modules compiled with %s"), |
875 | ibfd, new_opt, old_opt); | |
49f58d10 JB |
876 | } |
877 | ||
878 | new_flags &= ~ EF_M32C_ALL_FLAGS; | |
879 | old_flags &= ~ EF_M32C_ALL_FLAGS; | |
880 | ||
881 | /* Warn about any other mismatches. */ | |
882 | if (new_flags != old_flags) | |
883 | { | |
884 | error = TRUE; | |
4eca0228 | 885 | _bfd_error_handler |
695344c0 | 886 | /* xgettext:c-format */ |
d42c267e AM |
887 | (_("%B: uses different e_flags (%#x) fields" |
888 | " than previous modules (%#x)"), | |
889 | ibfd, new_flags, old_flags); | |
49f58d10 JB |
890 | } |
891 | } | |
892 | ||
893 | if (error) | |
894 | bfd_set_error (bfd_error_bad_value); | |
895 | ||
896 | return !error; | |
897 | } | |
898 | ||
899 | \f | |
900 | static bfd_boolean | |
2c3fc389 | 901 | m32c_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
49f58d10 JB |
902 | { |
903 | FILE *file = (FILE *) ptr; | |
904 | flagword flags; | |
905 | ||
906 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
907 | ||
908 | /* Print normal ELF private data. */ | |
909 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
910 | ||
911 | flags = elf_elfheader (abfd)->e_flags; | |
0af1713e | 912 | fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); |
49f58d10 JB |
913 | |
914 | switch (flags & EF_M32C_CPU_MASK) | |
915 | { | |
916 | default: break; | |
917 | case EF_M32C_CPU_M16C: fprintf (file, " -m16c"); break; | |
918 | case EF_M32C_CPU_M32C: fprintf (file, " -m32c"); break; | |
919 | } | |
920 | ||
921 | fputc ('\n', file); | |
922 | return TRUE; | |
923 | } | |
924 | ||
925 | /* Return the MACH for an e_flags value. */ | |
926 | ||
927 | static int | |
928 | elf32_m32c_machine (bfd *abfd) | |
929 | { | |
930 | switch (elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK) | |
931 | { | |
932 | case EF_M32C_CPU_M16C: return bfd_mach_m16c; | |
07d6d2b8 | 933 | case EF_M32C_CPU_M32C: return bfd_mach_m32c; |
49f58d10 JB |
934 | } |
935 | ||
936 | return bfd_mach_m16c; | |
937 | } | |
938 | ||
939 | static bfd_boolean | |
940 | m32c_elf_object_p (bfd *abfd) | |
941 | { | |
942 | bfd_default_set_arch_mach (abfd, bfd_arch_m32c, | |
943 | elf32_m32c_machine (abfd)); | |
944 | return TRUE; | |
945 | } | |
946 | \f | |
947 | ||
948 | #ifdef DEBUG | |
e460dd0d | 949 | void |
49f58d10 JB |
950 | dump_symtab (bfd * abfd, void *internal_syms, void *external_syms) |
951 | { | |
952 | size_t locsymcount; | |
953 | Elf_Internal_Sym *isymbuf; | |
954 | Elf_Internal_Sym *isymend; | |
955 | Elf_Internal_Sym *isym; | |
956 | Elf_Internal_Shdr *symtab_hdr; | |
957 | bfd_boolean free_internal = 0, free_external = 0; | |
958 | char * st_info_str; | |
959 | char * st_info_stb_str; | |
960 | char * st_other_str; | |
961 | char * st_shndx_str; | |
962 | ||
963 | if (! internal_syms) | |
964 | { | |
965 | internal_syms = bfd_malloc (1000); | |
966 | free_internal = 1; | |
967 | } | |
968 | if (! external_syms) | |
969 | { | |
970 | external_syms = bfd_malloc (1000); | |
971 | free_external = 1; | |
972 | } | |
68ffbac6 | 973 | |
49f58d10 JB |
974 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
975 | locsymcount = symtab_hdr->sh_size / get_elf_backend_data(abfd)->s->sizeof_sym; | |
976 | if (free_internal) | |
977 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
978 | symtab_hdr->sh_info, 0, | |
979 | internal_syms, external_syms, NULL); | |
980 | else | |
981 | isymbuf = internal_syms; | |
982 | isymend = isymbuf + locsymcount; | |
983 | ||
984 | for (isym = isymbuf ; isym < isymend ; isym++) | |
985 | { | |
986 | switch (ELF_ST_TYPE (isym->st_info)) | |
987 | { | |
86879d88 SDJ |
988 | case STT_FUNC: |
989 | st_info_str = "STT_FUNC"; | |
990 | break; | |
991 | ||
992 | case STT_SECTION: | |
993 | st_info_str = "STT_SECTION"; | |
994 | break; | |
995 | ||
996 | case STT_FILE: | |
997 | st_info_str = "STT_FILE"; | |
998 | break; | |
999 | ||
1000 | case STT_OBJECT: | |
1001 | st_info_str = "STT_OBJECT"; | |
1002 | break; | |
1003 | ||
1004 | case STT_TLS: | |
1005 | st_info_str = "STT_TLS"; | |
1006 | break; | |
1007 | ||
1008 | default: | |
1009 | st_info_str = ""; | |
49f58d10 | 1010 | } |
86879d88 | 1011 | |
49f58d10 JB |
1012 | switch (ELF_ST_BIND (isym->st_info)) |
1013 | { | |
86879d88 SDJ |
1014 | case STB_LOCAL: |
1015 | st_info_stb_str = "STB_LOCAL"; | |
1016 | break; | |
1017 | ||
1018 | case STB_GLOBAL: | |
1019 | st_info_stb_str = "STB_GLOBAL"; | |
1020 | break; | |
1021 | ||
1022 | default: | |
1023 | st_info_stb_str = ""; | |
49f58d10 | 1024 | } |
86879d88 | 1025 | |
49f58d10 JB |
1026 | switch (ELF_ST_VISIBILITY (isym->st_other)) |
1027 | { | |
86879d88 SDJ |
1028 | case STV_DEFAULT: |
1029 | st_other_str = "STV_DEFAULT"; | |
1030 | break; | |
1031 | ||
1032 | case STV_INTERNAL: | |
1033 | st_other_str = "STV_INTERNAL"; | |
1034 | break; | |
1035 | ||
1036 | case STV_PROTECTED: | |
1037 | st_other_str = "STV_PROTECTED"; | |
1038 | break; | |
1039 | ||
1040 | default: | |
1041 | st_other_str = ""; | |
49f58d10 | 1042 | } |
86879d88 | 1043 | |
49f58d10 JB |
1044 | switch (isym->st_shndx) |
1045 | { | |
86879d88 SDJ |
1046 | case SHN_ABS: |
1047 | st_shndx_str = "SHN_ABS"; | |
1048 | break; | |
1049 | ||
1050 | case SHN_COMMON: | |
1051 | st_shndx_str = "SHN_COMMON"; | |
1052 | break; | |
1053 | ||
1054 | case SHN_UNDEF: | |
1055 | st_shndx_str = "SHN_UNDEF"; | |
1056 | break; | |
1057 | ||
1058 | default: | |
1059 | st_shndx_str = ""; | |
49f58d10 | 1060 | } |
68ffbac6 | 1061 | |
49f58d10 JB |
1062 | printf ("isym = %p st_value = %lx st_size = %lx st_name = (%lu) %s " |
1063 | "st_info = (%d) %s %s st_other = (%d) %s st_shndx = (%d) %s\n", | |
68ffbac6 | 1064 | isym, |
49f58d10 JB |
1065 | (unsigned long) isym->st_value, |
1066 | (unsigned long) isym->st_size, | |
1067 | isym->st_name, | |
1068 | bfd_elf_string_from_elf_section (abfd, symtab_hdr->sh_link, | |
1069 | isym->st_name), | |
1070 | isym->st_info, st_info_str, st_info_stb_str, | |
1071 | isym->st_other, st_other_str, | |
1072 | isym->st_shndx, st_shndx_str); | |
1073 | } | |
1074 | if (free_internal) | |
1075 | free (internal_syms); | |
1076 | if (free_external) | |
1077 | free (external_syms); | |
1078 | } | |
1079 | ||
e460dd0d | 1080 | char * |
49f58d10 JB |
1081 | m32c_get_reloc (long reloc) |
1082 | { | |
1083 | if (0 <= reloc && reloc < R_M32C_max) | |
1084 | return m32c_elf_howto_table[reloc].name; | |
1085 | else | |
1086 | return ""; | |
1087 | } | |
1088 | #endif /* DEBUG */ | |
1089 | ||
1090 | /* Handle relaxing. */ | |
1091 | ||
1092 | /* A subroutine of m32c_elf_relax_section. If the global symbol H | |
1093 | is within the low 64k, remove any entry for it in the plt. */ | |
1094 | ||
1095 | struct relax_plt_data | |
1096 | { | |
1097 | asection *splt; | |
1098 | bfd_boolean *again; | |
1099 | }; | |
1100 | ||
1101 | static bfd_boolean | |
2c3fc389 | 1102 | m32c_relax_plt_check (struct elf_link_hash_entry *h, void * xdata) |
49f58d10 JB |
1103 | { |
1104 | struct relax_plt_data *data = (struct relax_plt_data *) xdata; | |
1105 | ||
49f58d10 JB |
1106 | if (h->plt.offset != (bfd_vma) -1) |
1107 | { | |
1108 | bfd_vma address; | |
1109 | ||
1110 | if (h->root.type == bfd_link_hash_undefined | |
1111 | || h->root.type == bfd_link_hash_undefweak) | |
1112 | address = 0; | |
1113 | else | |
1114 | address = (h->root.u.def.section->output_section->vma | |
1115 | + h->root.u.def.section->output_offset | |
1116 | + h->root.u.def.value); | |
1117 | ||
1118 | if (address <= 0xffff) | |
1119 | { | |
1120 | h->plt.offset = -1; | |
1121 | data->splt->size -= 4; | |
1122 | *data->again = TRUE; | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | return TRUE; | |
1127 | } | |
1128 | ||
1129 | /* A subroutine of m32c_elf_relax_section. If the global symbol H | |
1130 | previously had a plt entry, give it a new entry offset. */ | |
1131 | ||
1132 | static bfd_boolean | |
2c3fc389 | 1133 | m32c_relax_plt_realloc (struct elf_link_hash_entry *h, void * xdata) |
49f58d10 JB |
1134 | { |
1135 | bfd_vma *entry = (bfd_vma *) xdata; | |
1136 | ||
49f58d10 JB |
1137 | if (h->plt.offset != (bfd_vma) -1) |
1138 | { | |
1139 | h->plt.offset = *entry; | |
1140 | *entry += 4; | |
1141 | } | |
1142 | ||
1143 | return TRUE; | |
1144 | } | |
1145 | ||
1146 | static bfd_boolean | |
87e0a731 | 1147 | m32c_elf_relax_plt_section (asection *splt, |
07d6d2b8 AM |
1148 | struct bfd_link_info *info, |
1149 | bfd_boolean *again) | |
49f58d10 JB |
1150 | { |
1151 | struct relax_plt_data relax_plt_data; | |
1152 | bfd *ibfd; | |
1153 | ||
1154 | /* Assume nothing changes. */ | |
1155 | *again = FALSE; | |
1156 | ||
0e1862bb | 1157 | if (bfd_link_relocatable (info)) |
49f58d10 JB |
1158 | return TRUE; |
1159 | ||
49f58d10 JB |
1160 | /* Quick check for an empty plt. */ |
1161 | if (splt->size == 0) | |
1162 | return TRUE; | |
1163 | ||
1164 | /* Map across all global symbols; see which ones happen to | |
1165 | fall in the low 64k. */ | |
1166 | relax_plt_data.splt = splt; | |
1167 | relax_plt_data.again = again; | |
1168 | elf_link_hash_traverse (elf_hash_table (info), m32c_relax_plt_check, | |
1169 | &relax_plt_data); | |
1170 | ||
1171 | /* Likewise for local symbols, though that's somewhat less convenient | |
1172 | as we have to walk the list of input bfds and swap in symbol data. */ | |
c72f2fb2 | 1173 | for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link.next) |
49f58d10 JB |
1174 | { |
1175 | bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd); | |
1176 | Elf_Internal_Shdr *symtab_hdr; | |
1177 | Elf_Internal_Sym *isymbuf = NULL; | |
1178 | unsigned int idx; | |
1179 | ||
1180 | if (! local_plt_offsets) | |
1181 | continue; | |
1182 | ||
1183 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1184 | if (symtab_hdr->sh_info != 0) | |
1185 | { | |
1186 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1187 | if (isymbuf == NULL) | |
1188 | isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
1189 | symtab_hdr->sh_info, 0, | |
1190 | NULL, NULL, NULL); | |
1191 | if (isymbuf == NULL) | |
1192 | return FALSE; | |
1193 | } | |
1194 | ||
1195 | for (idx = 0; idx < symtab_hdr->sh_info; ++idx) | |
1196 | { | |
1197 | Elf_Internal_Sym *isym; | |
1198 | asection *tsec; | |
1199 | bfd_vma address; | |
1200 | ||
1201 | if (local_plt_offsets[idx] == (bfd_vma) -1) | |
1202 | continue; | |
1203 | ||
1204 | isym = &isymbuf[idx]; | |
1205 | if (isym->st_shndx == SHN_UNDEF) | |
1206 | continue; | |
1207 | else if (isym->st_shndx == SHN_ABS) | |
1208 | tsec = bfd_abs_section_ptr; | |
1209 | else if (isym->st_shndx == SHN_COMMON) | |
1210 | tsec = bfd_com_section_ptr; | |
1211 | else | |
1212 | tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
1213 | ||
1214 | address = (tsec->output_section->vma | |
1215 | + tsec->output_offset | |
1216 | + isym->st_value); | |
1217 | if (address <= 0xffff) | |
1218 | { | |
1219 | local_plt_offsets[idx] = -1; | |
1220 | splt->size -= 4; | |
1221 | *again = TRUE; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | if (isymbuf != NULL | |
1226 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1227 | { | |
1228 | if (! info->keep_memory) | |
1229 | free (isymbuf); | |
1230 | else | |
1231 | { | |
1232 | /* Cache the symbols for elf_link_input_bfd. */ | |
1233 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | /* If we changed anything, walk the symbols again to reallocate | |
1239 | .plt entry addresses. */ | |
1240 | if (*again && splt->size > 0) | |
1241 | { | |
1242 | bfd_vma entry = 0; | |
1243 | ||
1244 | elf_link_hash_traverse (elf_hash_table (info), | |
1245 | m32c_relax_plt_realloc, &entry); | |
1246 | ||
c72f2fb2 | 1247 | for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link.next) |
49f58d10 JB |
1248 | { |
1249 | bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd); | |
1250 | unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info; | |
1251 | unsigned int idx; | |
1252 | ||
1253 | if (! local_plt_offsets) | |
1254 | continue; | |
1255 | ||
1256 | for (idx = 0; idx < nlocals; ++idx) | |
1257 | if (local_plt_offsets[idx] != (bfd_vma) -1) | |
1258 | { | |
07d6d2b8 | 1259 | local_plt_offsets[idx] = entry; |
49f58d10 JB |
1260 | entry += 4; |
1261 | } | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | return TRUE; | |
1266 | } | |
1267 | ||
6772dd07 DD |
1268 | static int |
1269 | compare_reloc (const void *e1, const void *e2) | |
49f58d10 | 1270 | { |
6772dd07 DD |
1271 | const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1; |
1272 | const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2; | |
1273 | ||
1274 | if (i1->r_offset == i2->r_offset) | |
1275 | return 0; | |
1276 | else | |
1277 | return i1->r_offset < i2->r_offset ? -1 : 1; | |
1278 | } | |
1279 | ||
a1013894 | 1280 | #define OFFSET_FOR_RELOC(rel) m32c_offset_for_reloc (abfd, rel, symtab_hdr, shndx_buf, intsyms) |
6772dd07 DD |
1281 | static bfd_vma |
1282 | m32c_offset_for_reloc (bfd *abfd, | |
6772dd07 DD |
1283 | Elf_Internal_Rela *rel, |
1284 | Elf_Internal_Shdr *symtab_hdr, | |
c7e2358a | 1285 | Elf_External_Sym_Shndx *shndx_buf ATTRIBUTE_UNUSED, |
6772dd07 DD |
1286 | Elf_Internal_Sym *intsyms) |
1287 | { | |
1288 | bfd_vma symval; | |
1289 | ||
1290 | /* Get the value of the symbol referred to by the reloc. */ | |
1291 | if (ELF32_R_SYM (rel->r_info) < symtab_hdr->sh_info) | |
49f58d10 | 1292 | { |
6772dd07 DD |
1293 | /* A local symbol. */ |
1294 | Elf_Internal_Sym *isym; | |
a1013894 DD |
1295 | asection *ssec; |
1296 | ||
6772dd07 | 1297 | isym = intsyms + ELF32_R_SYM (rel->r_info); |
a1013894 | 1298 | ssec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a1013894 DD |
1299 | symval = isym->st_value; |
1300 | if (ssec) | |
1301 | symval += ssec->output_section->vma | |
1302 | + ssec->output_offset; | |
6772dd07 DD |
1303 | } |
1304 | else | |
49f58d10 | 1305 | { |
6772dd07 DD |
1306 | unsigned long indx; |
1307 | struct elf_link_hash_entry *h; | |
1308 | ||
1309 | /* An external symbol. */ | |
1310 | indx = ELF32_R_SYM (rel->r_info) - symtab_hdr->sh_info; | |
1311 | h = elf_sym_hashes (abfd)[indx]; | |
1312 | BFD_ASSERT (h != NULL); | |
1313 | ||
1314 | if (h->root.type != bfd_link_hash_defined | |
1315 | && h->root.type != bfd_link_hash_defweak) | |
1316 | /* This appears to be a reference to an undefined | |
1317 | symbol. Just ignore it--it will be caught by the | |
1318 | regular reloc processing. */ | |
1319 | return 0; | |
1320 | ||
1321 | symval = (h->root.u.def.value | |
1322 | + h->root.u.def.section->output_section->vma | |
1323 | + h->root.u.def.section->output_offset); | |
49f58d10 | 1324 | } |
6772dd07 DD |
1325 | return symval; |
1326 | } | |
1327 | ||
1328 | static int bytes_saved = 0; | |
1329 | ||
1330 | static int bytes_to_reloc[] = { | |
1331 | R_M32C_NONE, | |
1332 | R_M32C_8, | |
1333 | R_M32C_16, | |
1334 | R_M32C_24, | |
1335 | R_M32C_32 | |
1336 | }; | |
1337 | ||
1338 | /* What we use the bits in a relax reloc addend (R_M32C_RL_*) for. */ | |
1339 | ||
1340 | /* Mask for the number of relocs associated with this insn. */ | |
1341 | #define RLA_RELOCS 0x0000000f | |
1342 | /* Number of bytes gas emitted (before gas's relaxing) */ | |
1343 | #define RLA_NBYTES 0x00000ff0 | |
1344 | ||
1345 | /* If the displacement is within the given range and the new encoding | |
1346 | differs from the old encoding (the index), then the insn can be | |
1347 | relaxed to the new encoding. */ | |
1348 | typedef struct { | |
1349 | int bytes; | |
1350 | unsigned int max_disp; | |
1351 | unsigned char new_encoding; | |
1352 | } EncodingTable; | |
1353 | ||
1354 | static EncodingTable m16c_addr_encodings[] = { | |
1355 | { 0, 0, 0 }, /* R0 */ | |
1356 | { 0, 0, 1 }, /* R1 */ | |
1357 | { 0, 0, 2 }, /* R2 */ | |
1358 | { 0, 0, 3 }, /* R3 */ | |
1359 | { 0, 0, 4 }, /* A0 */ | |
1360 | { 0, 0, 5 }, /* A1 */ | |
1361 | { 0, 0, 6 }, /* [A0] */ | |
1362 | { 0, 0, 7 }, /* [A1] */ | |
1363 | { 1, 0, 6 }, /* udsp:8[A0] */ | |
1364 | { 1, 0, 7 }, /* udsp:8[A1] */ | |
1365 | { 1, 0, 10 }, /* udsp:8[SB] */ | |
1366 | { 1, 0, 11 }, /* sdsp:8[FB] */ | |
1367 | { 2, 255, 8 }, /* udsp:16[A0] */ | |
1368 | { 2, 255, 9 }, /* udsp:16[A1] */ | |
1369 | { 2, 255, 10 }, /* udsp:16[SB] */ | |
1370 | { 2, 0, 15 }, /* abs:16 */ | |
1371 | }; | |
1372 | ||
1373 | static EncodingTable m16c_jmpaddr_encodings[] = { | |
1374 | { 0, 0, 0 }, /* R0 */ | |
1375 | { 0, 0, 1 }, /* R1 */ | |
1376 | { 0, 0, 2 }, /* R2 */ | |
1377 | { 0, 0, 3 }, /* R3 */ | |
1378 | { 0, 0, 4 }, /* A0 */ | |
1379 | { 0, 0, 5 }, /* A1 */ | |
1380 | { 0, 0, 6 }, /* [A0] */ | |
1381 | { 0, 0, 7 }, /* [A1] */ | |
1382 | { 1, 0, 6 }, /* udsp:8[A0] */ | |
1383 | { 1, 0, 7 }, /* udsp:8[A1] */ | |
1384 | { 1, 0, 10 }, /* udsp:8[SB] */ | |
1385 | { 1, 0, 11 }, /* sdsp:8[FB] */ | |
1386 | { 3, 255, 8 }, /* udsp:20[A0] */ | |
1387 | { 3, 255, 9 }, /* udsp:20[A1] */ | |
1388 | { 2, 255, 10 }, /* udsp:16[SB] */ | |
1389 | { 2, 0, 15 }, /* abs:16 */ | |
1390 | }; | |
1391 | ||
1392 | static EncodingTable m32c_addr_encodings[] = { | |
1393 | { 0, 0, 0 }, /* [A0] */ | |
1394 | { 0, 0, 1 }, /* [A1] */ | |
1395 | { 0, 0, 2 }, /* A0 */ | |
1396 | { 0, 0, 3 }, /* A1 */ | |
1397 | { 1, 0, 0 }, /* udsp:8[A0] */ | |
1398 | { 1, 0, 1 }, /* udsp:8[A1] */ | |
1399 | { 1, 0, 6 }, /* udsp:8[SB] */ | |
1400 | { 1, 0, 7 }, /* sdsp:8[FB] */ | |
1401 | { 2, 255, 4 }, /* udsp:16[A0] */ | |
1402 | { 2, 255, 5 }, /* udsp:16[A1] */ | |
1403 | { 2, 255, 6 }, /* udsp:16[SB] */ | |
1404 | { 2, 127, 7 }, /* sdsp:16[FB] */ | |
1405 | { 3, 65535, 8 }, /* udsp:24[A0] */ | |
1406 | { 3, 65535, 9 }, /* udsp:24[A1] */ | |
1407 | { 3, 65535, 15 }, /* abs24 */ | |
1408 | { 2, 0, 15 }, /* abs16 */ | |
1409 | { 0, 0, 16 }, /* R2 */ | |
1410 | { 0, 0, 17 }, /* R3 */ | |
1411 | { 0, 0, 18 }, /* R0 */ | |
1412 | { 0, 0, 19 }, /* R1 */ | |
1413 | { 0, 0, 20 }, /* */ | |
1414 | { 0, 0, 21 }, /* */ | |
1415 | { 0, 0, 22 }, /* */ | |
1416 | { 0, 0, 23 }, /* */ | |
1417 | { 0, 0, 24 }, /* */ | |
1418 | { 0, 0, 25 }, /* */ | |
1419 | { 0, 0, 26 }, /* */ | |
1420 | { 0, 0, 27 }, /* */ | |
1421 | { 0, 0, 28 }, /* */ | |
1422 | { 0, 0, 29 }, /* */ | |
1423 | { 0, 0, 30 }, /* */ | |
1424 | { 0, 0, 31 }, /* */ | |
1425 | }; | |
1426 | ||
49f58d10 JB |
1427 | static bfd_boolean |
1428 | m32c_elf_relax_section | |
07d6d2b8 AM |
1429 | (bfd * abfd, |
1430 | asection * sec, | |
49f58d10 | 1431 | struct bfd_link_info * link_info, |
07d6d2b8 | 1432 | bfd_boolean * again) |
49f58d10 JB |
1433 | { |
1434 | Elf_Internal_Shdr *symtab_hdr; | |
1435 | Elf_Internal_Shdr *shndx_hdr; | |
1436 | Elf_Internal_Rela *internal_relocs; | |
1437 | Elf_Internal_Rela *free_relocs = NULL; | |
6772dd07 | 1438 | Elf_Internal_Rela *irel, *irelend, *srel; |
49f58d10 JB |
1439 | bfd_byte * contents = NULL; |
1440 | bfd_byte * free_contents = NULL; | |
6772dd07 DD |
1441 | Elf_Internal_Sym *intsyms = NULL; |
1442 | Elf_Internal_Sym *free_intsyms = NULL; | |
49f58d10 JB |
1443 | Elf_External_Sym_Shndx *shndx_buf = NULL; |
1444 | int machine; | |
1445 | ||
1446 | if (abfd == elf_hash_table (link_info)->dynobj | |
87e0a731 | 1447 | && (sec->flags & SEC_LINKER_CREATED) != 0 |
49f58d10 | 1448 | && strcmp (sec->name, ".plt") == 0) |
87e0a731 | 1449 | return m32c_elf_relax_plt_section (sec, link_info, again); |
49f58d10 JB |
1450 | |
1451 | /* Assume nothing changes. */ | |
1452 | *again = FALSE; | |
1453 | ||
1454 | machine = elf32_m32c_machine (abfd); | |
1455 | ||
1456 | /* We don't have to do anything for a relocatable link, if | |
1457 | this section does not have relocs, or if this is not a | |
1458 | code section. */ | |
0e1862bb | 1459 | if (bfd_link_relocatable (link_info) |
49f58d10 JB |
1460 | || (sec->flags & SEC_RELOC) == 0 |
1461 | || sec->reloc_count == 0 | |
1462 | || (sec->flags & SEC_CODE) == 0) | |
1463 | return TRUE; | |
1464 | ||
6a40cf0c NC |
1465 | symtab_hdr = & elf_symtab_hdr (abfd); |
1466 | if (elf_symtab_shndx_list (abfd)) | |
1467 | shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr; | |
1468 | else | |
1469 | shndx_hdr = NULL; | |
49f58d10 | 1470 | |
6772dd07 DD |
1471 | /* Get the section contents. */ |
1472 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1473 | contents = elf_section_data (sec)->this_hdr.contents; | |
1474 | /* Go get them off disk. */ | |
1475 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1476 | goto error_return; | |
1477 | ||
1478 | /* Read this BFD's symbols. */ | |
1479 | /* Get cached copy if it exists. */ | |
1480 | if (symtab_hdr->contents != NULL) | |
1481 | { | |
1482 | intsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1483 | } | |
1484 | else | |
1485 | { | |
1486 | intsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr, symtab_hdr->sh_info, 0, NULL, NULL, NULL); | |
1487 | symtab_hdr->contents = (bfd_byte *) intsyms; | |
1488 | } | |
1489 | ||
6a40cf0c | 1490 | if (shndx_hdr && shndx_hdr->sh_size != 0) |
6772dd07 DD |
1491 | { |
1492 | bfd_size_type amt; | |
1493 | ||
1494 | amt = symtab_hdr->sh_info; | |
1495 | amt *= sizeof (Elf_External_Sym_Shndx); | |
1496 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); | |
1497 | if (shndx_buf == NULL) | |
1498 | goto error_return; | |
1499 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
2c3fc389 | 1500 | || bfd_bread (shndx_buf, amt, abfd) != amt) |
6772dd07 DD |
1501 | goto error_return; |
1502 | shndx_hdr->contents = (bfd_byte *) shndx_buf; | |
1503 | } | |
1504 | ||
49f58d10 JB |
1505 | /* Get a copy of the native relocations. */ |
1506 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 1507 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
49f58d10 JB |
1508 | link_info->keep_memory)); |
1509 | if (internal_relocs == NULL) | |
1510 | goto error_return; | |
1511 | if (! link_info->keep_memory) | |
1512 | free_relocs = internal_relocs; | |
1513 | ||
6772dd07 DD |
1514 | /* The RL_ relocs must be just before the operand relocs they go |
1515 | with, so we must sort them to guarantee this. */ | |
1516 | qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela), | |
07d6d2b8 | 1517 | compare_reloc); |
6772dd07 | 1518 | |
49f58d10 JB |
1519 | /* Walk through them looking for relaxing opportunities. */ |
1520 | irelend = internal_relocs + sec->reloc_count; | |
1521 | ||
1522 | for (irel = internal_relocs; irel < irelend; irel++) | |
1523 | { | |
1524 | bfd_vma symval; | |
6772dd07 | 1525 | unsigned char *insn, *gap, *einsn; |
49f58d10 | 1526 | bfd_vma pc; |
6772dd07 DD |
1527 | bfd_signed_vma pcrel; |
1528 | int relax_relocs; | |
1529 | int gap_size; | |
1530 | int new_type; | |
1531 | int posn; | |
1532 | int enc; | |
1533 | EncodingTable *enctbl; | |
1534 | EncodingTable *e; | |
1535 | ||
1536 | if (ELF32_R_TYPE(irel->r_info) != R_M32C_RL_JUMP | |
1537 | && ELF32_R_TYPE(irel->r_info) != R_M32C_RL_1ADDR | |
1538 | && ELF32_R_TYPE(irel->r_info) != R_M32C_RL_2ADDR) | |
1539 | continue; | |
49f58d10 | 1540 | |
6772dd07 | 1541 | srel = irel; |
49f58d10 | 1542 | |
6772dd07 DD |
1543 | /* There will always be room for the relaxed insn, since it is smaller |
1544 | than the one it would replace. */ | |
1545 | BFD_ASSERT (irel->r_offset < sec->size); | |
1546 | ||
1547 | insn = contents + irel->r_offset; | |
1548 | relax_relocs = irel->r_addend % 16; | |
1549 | ||
1550 | /* Ok, we only have three relocs we care about, and they're all | |
1551 | fake. The lower four bits of the addend is always the number | |
1552 | of following relocs (hence the qsort above) that are assigned | |
1553 | to this opcode. The next 8 bits of the addend indicates the | |
1554 | number of bytes in the insn. We use the rest of them | |
1555 | ourselves as flags for the more expensive operations (defines | |
1556 | above). The three relocs are: | |
1557 | ||
1558 | RL_JUMP: This marks all direct jump insns. We check the | |
1559 | displacement and replace them with shorter jumps if | |
1560 | they're in range. We also use this to find JMP.S | |
1561 | insns and manually shorten them when we delete bytes. | |
1562 | We have to decode these insns to figure out what to | |
1563 | do. | |
1564 | ||
1565 | RL_1ADDR: This is a :G or :Q insn, which has a single | |
1566 | "standard" operand. We have to extract the type | |
1567 | field, see if it's a wide displacement, then figure | |
1568 | out if we can replace it with a narrow displacement. | |
1569 | We don't have to decode these insns. | |
1570 | ||
1571 | RL_2ADDR: Similarly, but two "standard" operands. Note that | |
1572 | r_addend may still be 1, as standard operands don't | |
1573 | always have displacements. Gas shouldn't give us one | |
1574 | with zero operands, but since we don't know which one | |
1575 | has the displacement, we check them both anyway. | |
1576 | ||
1577 | These all point to the beginning of the insn itself, not the | |
1578 | operands. | |
1579 | ||
1580 | Note that we only relax one step at a time, relying on the | |
1581 | linker to call us repeatedly. Thus, there is no code for | |
1582 | JMP.A->JMP.B although that will happen in two steps. | |
1583 | Likewise, for 2ADDR relaxes, we do one operand per cycle. | |
1584 | */ | |
1585 | ||
1586 | /* Get the value of the symbol referred to by the reloc. Just | |
07d6d2b8 AM |
1587 | in case this is the last reloc in the list, use the RL's |
1588 | addend to choose between this reloc (no addend) or the next | |
1589 | (yes addend, which means at least one following reloc). */ | |
6772dd07 DD |
1590 | srel = irel + (relax_relocs ? 1 : 0); |
1591 | symval = OFFSET_FOR_RELOC (srel); | |
1592 | ||
1593 | /* Setting gap_size nonzero is the flag which means "something | |
1594 | shrunk". */ | |
1595 | gap_size = 0; | |
e970df31 | 1596 | gap = NULL; |
6772dd07 DD |
1597 | new_type = ELF32_R_TYPE(srel->r_info); |
1598 | ||
1599 | pc = sec->output_section->vma + sec->output_offset | |
1600 | + srel->r_offset; | |
1601 | pcrel = symval - pc + srel->r_addend; | |
1602 | ||
1603 | if (machine == bfd_mach_m16c) | |
49f58d10 | 1604 | { |
6772dd07 | 1605 | /* R8C / M16C */ |
49f58d10 | 1606 | |
6772dd07 | 1607 | switch (ELF32_R_TYPE(irel->r_info)) |
49f58d10 | 1608 | { |
49f58d10 | 1609 | |
6772dd07 DD |
1610 | case R_M32C_RL_JUMP: |
1611 | switch (insn[0]) | |
1612 | { | |
1613 | case 0xfe: /* jmp.b */ | |
1614 | if (pcrel >= 2 && pcrel <= 9) | |
1615 | { | |
1616 | /* Relax JMP.B -> JMP.S. We need to get rid of | |
1617 | the following reloc though. */ | |
1618 | insn[0] = 0x60 | (pcrel - 2); | |
1619 | new_type = R_M32C_NONE; | |
1620 | irel->r_addend = 0x10; | |
1621 | gap_size = 1; | |
1622 | gap = insn + 1; | |
1623 | } | |
1624 | break; | |
1625 | ||
1626 | case 0xf4: /* jmp.w */ | |
1627 | /* 128 is allowed because it will be one byte closer | |
1628 | after relaxing. Likewise for all other pc-rel | |
1629 | jumps. */ | |
1630 | if (pcrel <= 128 && pcrel >= -128) | |
1631 | { | |
1632 | /* Relax JMP.W -> JMP.B */ | |
1633 | insn[0] = 0xfe; | |
1634 | insn[1] = 0; | |
1635 | new_type = R_M32C_8_PCREL; | |
1636 | gap_size = 1; | |
1637 | gap = insn + 2; | |
1638 | } | |
1639 | break; | |
1640 | ||
1641 | case 0xfc: /* jmp.a */ | |
1642 | if (pcrel <= 32768 && pcrel >= -32768) | |
1643 | { | |
1644 | /* Relax JMP.A -> JMP.W */ | |
1645 | insn[0] = 0xf4; | |
1646 | insn[1] = 0; | |
1647 | insn[2] = 0; | |
1648 | new_type = R_M32C_16_PCREL; | |
1649 | gap_size = 1; | |
1650 | gap = insn + 3; | |
1651 | } | |
1652 | break; | |
1653 | ||
1654 | case 0xfd: /* jsr.a */ | |
1655 | if (pcrel <= 32768 && pcrel >= -32768) | |
1656 | { | |
1657 | /* Relax JSR.A -> JSR.W */ | |
1658 | insn[0] = 0xf5; | |
1659 | insn[1] = 0; | |
1660 | insn[2] = 0; | |
1661 | new_type = R_M32C_16_PCREL; | |
1662 | gap_size = 1; | |
1663 | gap = insn + 3; | |
1664 | } | |
1665 | break; | |
1666 | } | |
1667 | break; | |
49f58d10 | 1668 | |
6772dd07 DD |
1669 | case R_M32C_RL_2ADDR: |
1670 | /* xxxx xxxx srce dest [src-disp] [dest-disp]*/ | |
49f58d10 | 1671 | |
6772dd07 DD |
1672 | enctbl = m16c_addr_encodings; |
1673 | posn = 2; | |
1674 | enc = (insn[1] >> 4) & 0x0f; | |
1675 | e = & enctbl[enc]; | |
1676 | ||
1677 | if (srel->r_offset == irel->r_offset + posn | |
1678 | && e->new_encoding != enc | |
1679 | && symval <= e->max_disp) | |
1680 | { | |
1681 | insn[1] &= 0x0f; | |
1682 | insn[1] |= e->new_encoding << 4; | |
1683 | gap_size = e->bytes - enctbl[e->new_encoding].bytes; | |
1684 | gap = insn + posn + enctbl[e->new_encoding].bytes; | |
1685 | new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes]; | |
1686 | break; | |
1687 | } | |
1688 | if (relax_relocs == 2) | |
1689 | srel ++; | |
1690 | posn += e->bytes; | |
1691 | ||
1692 | goto try_1addr_16; | |
49f58d10 | 1693 | |
6772dd07 DD |
1694 | case R_M32C_RL_1ADDR: |
1695 | /* xxxx xxxx xxxx dest [disp] */ | |
49f58d10 | 1696 | |
6772dd07 DD |
1697 | enctbl = m16c_addr_encodings; |
1698 | posn = 2; | |
68ffbac6 | 1699 | |
6772dd07 DD |
1700 | /* Check the opcode for jumps. We know it's safe to |
1701 | do this because all 2ADDR insns are at least two | |
1702 | bytes long. */ | |
1703 | enc = insn[0] * 256 + insn[1]; | |
1704 | enc &= 0xfff0; | |
1705 | if (enc == 0x7d20 | |
1706 | || enc == 0x7d00 | |
1707 | || enc == 0x7d30 | |
1708 | || enc == 0x7d10) | |
1709 | { | |
1710 | enctbl = m16c_jmpaddr_encodings; | |
1711 | } | |
1712 | ||
1713 | try_1addr_16: | |
1714 | /* srel, posn, and enc must be set here. */ | |
1715 | ||
1716 | symval = OFFSET_FOR_RELOC (srel); | |
1717 | enc = insn[1] & 0x0f; | |
1718 | e = & enctbl[enc]; | |
1719 | ||
1720 | if (srel->r_offset == irel->r_offset + posn | |
1721 | && e->new_encoding != enc | |
1722 | && symval <= e->max_disp) | |
1723 | { | |
1724 | insn[1] &= 0xf0; | |
1725 | insn[1] |= e->new_encoding; | |
1726 | gap_size = e->bytes - enctbl[e->new_encoding].bytes; | |
1727 | gap = insn + posn + enctbl[e->new_encoding].bytes; | |
1728 | new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes]; | |
1729 | break; | |
1730 | } | |
1731 | ||
1732 | break; | |
1733 | ||
1734 | } /* Ends switch (reloc type) for m16c. */ | |
1735 | } | |
1736 | else /* machine == bfd_mach_m32c */ | |
49f58d10 | 1737 | { |
6772dd07 | 1738 | /* M32CM / M32C */ |
49f58d10 | 1739 | |
6772dd07 | 1740 | switch (ELF32_R_TYPE(irel->r_info)) |
49f58d10 | 1741 | { |
49f58d10 | 1742 | |
6772dd07 DD |
1743 | case R_M32C_RL_JUMP: |
1744 | switch (insn[0]) | |
1745 | { | |
1746 | case 0xbb: /* jmp.b */ | |
1747 | if (pcrel >= 2 && pcrel <= 9) | |
1748 | { | |
1749 | int p = pcrel - 2; | |
1750 | /* Relax JMP.B -> JMP.S. We need to get rid of | |
1751 | the following reloc though. */ | |
1752 | insn[0] = 0x4a | ((p << 3) & 0x30) | (p & 1); | |
1753 | new_type = R_M32C_NONE; | |
1754 | irel->r_addend = 0x10; | |
1755 | gap_size = 1; | |
1756 | gap = insn + 1; | |
1757 | } | |
1758 | break; | |
1759 | ||
1760 | case 0xce: /* jmp.w */ | |
1761 | if (pcrel <= 128 && pcrel >= -128) | |
1762 | { | |
1763 | /* Relax JMP.W -> JMP.B */ | |
1764 | insn[0] = 0xbb; | |
1765 | insn[1] = 0; | |
1766 | new_type = R_M32C_8_PCREL; | |
1767 | gap_size = 1; | |
1768 | gap = insn + 2; | |
1769 | } | |
1770 | break; | |
1771 | ||
1772 | case 0xcc: /* jmp.a */ | |
1773 | if (pcrel <= 32768 && pcrel >= -32768) | |
1774 | { | |
1775 | /* Relax JMP.A -> JMP.W */ | |
1776 | insn[0] = 0xce; | |
1777 | insn[1] = 0; | |
1778 | insn[2] = 0; | |
1779 | new_type = R_M32C_16_PCREL; | |
1780 | gap_size = 1; | |
1781 | gap = insn + 3; | |
1782 | } | |
1783 | break; | |
1784 | ||
1785 | case 0xcd: /* jsr.a */ | |
1786 | if (pcrel <= 32768 && pcrel >= -32768) | |
1787 | { | |
1788 | /* Relax JSR.A -> JSR.W */ | |
1789 | insn[0] = 0xcf; | |
1790 | insn[1] = 0; | |
1791 | insn[2] = 0; | |
1792 | new_type = R_M32C_16_PCREL; | |
1793 | gap_size = 1; | |
1794 | gap = insn + 3; | |
1795 | } | |
1796 | break; | |
1797 | } | |
1798 | break; | |
49f58d10 | 1799 | |
6772dd07 DD |
1800 | case R_M32C_RL_2ADDR: |
1801 | /* xSSS DDDx DDSS xxxx [src-disp] [dest-disp]*/ | |
49f58d10 | 1802 | |
6772dd07 DD |
1803 | einsn = insn; |
1804 | posn = 2; | |
1805 | if (einsn[0] == 1) | |
1806 | { | |
1807 | /* prefix; remove it as far as the RL reloc is concerned. */ | |
1808 | einsn ++; | |
1809 | posn ++; | |
1810 | } | |
49f58d10 | 1811 | |
6772dd07 DD |
1812 | enctbl = m32c_addr_encodings; |
1813 | enc = ((einsn[0] & 0x70) >> 2) | ((einsn[1] & 0x30) >> 4); | |
1814 | e = & enctbl[enc]; | |
49f58d10 | 1815 | |
6772dd07 DD |
1816 | if (srel->r_offset == irel->r_offset + posn |
1817 | && e->new_encoding != enc | |
1818 | && symval <= e->max_disp) | |
1819 | { | |
1820 | einsn[0] &= 0x8f; | |
1821 | einsn[0] |= (e->new_encoding & 0x1c) << 2; | |
1822 | einsn[1] &= 0xcf; | |
1823 | einsn[1] |= (e->new_encoding & 0x03) << 4; | |
1824 | gap_size = e->bytes - enctbl[e->new_encoding].bytes; | |
1825 | gap = insn + posn + enctbl[e->new_encoding].bytes; | |
1826 | new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes]; | |
1827 | break; | |
1828 | } | |
1829 | if (relax_relocs == 2) | |
1830 | srel ++; | |
1831 | posn += e->bytes; | |
1832 | ||
1833 | goto try_1addr_32; | |
1834 | ||
1835 | case R_M32C_RL_1ADDR: | |
1836 | /* xxxx DDDx DDxx xxxx [disp] */ | |
1837 | ||
1838 | einsn = insn; | |
1839 | posn = 2; | |
1840 | if (einsn[0] == 1) | |
1841 | { | |
1842 | /* prefix; remove it as far as the RL reloc is concerned. */ | |
1843 | einsn ++; | |
1844 | posn ++; | |
1845 | } | |
1846 | ||
1847 | enctbl = m32c_addr_encodings; | |
49f58d10 | 1848 | |
6772dd07 DD |
1849 | try_1addr_32: |
1850 | /* srel, posn, and enc must be set here. */ | |
49f58d10 | 1851 | |
6772dd07 DD |
1852 | symval = OFFSET_FOR_RELOC (srel); |
1853 | enc = ((einsn[0] & 0x0e) << 1) | ((einsn[1] & 0xc0) >> 6); | |
1854 | e = & enctbl[enc]; | |
49f58d10 | 1855 | |
6772dd07 DD |
1856 | if (srel->r_offset == irel->r_offset + posn |
1857 | && e->new_encoding != enc | |
1858 | && symval <= e->max_disp) | |
1859 | { | |
1860 | einsn[0] &= 0xf1; | |
1861 | einsn[0] |= (e->new_encoding & 0x1c) >> 1; | |
1862 | einsn[1] &= 0x3f; | |
1863 | einsn[1] |= (e->new_encoding & 0x03) << 6; | |
1864 | gap_size = e->bytes - enctbl[e->new_encoding].bytes; | |
1865 | gap = insn + posn + enctbl[e->new_encoding].bytes; | |
1866 | new_type = bytes_to_reloc[enctbl[e->new_encoding].bytes]; | |
1867 | break; | |
1868 | } | |
1869 | ||
1870 | break; | |
1871 | ||
1872 | } /* Ends switch (reloc type) for m32c. */ | |
1873 | } | |
1874 | ||
1875 | if (gap_size == 0) | |
1876 | continue; | |
1877 | ||
1878 | *again = TRUE; | |
1879 | ||
1880 | srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), new_type); | |
1881 | ||
1882 | /* Note that we've changed the relocs, section contents, etc. */ | |
1883 | elf_section_data (sec)->relocs = internal_relocs; | |
1884 | free_relocs = NULL; | |
68ffbac6 | 1885 | |
6772dd07 DD |
1886 | elf_section_data (sec)->this_hdr.contents = contents; |
1887 | free_contents = NULL; | |
1888 | ||
1889 | symtab_hdr->contents = (bfd_byte *) intsyms; | |
1890 | free_intsyms = NULL; | |
1891 | ||
1892 | bytes_saved += gap_size; | |
1893 | ||
1894 | if (! m32c_elf_relax_delete_bytes(abfd, sec, gap - contents, gap_size)) | |
1895 | goto error_return; | |
49f58d10 | 1896 | |
49f58d10 JB |
1897 | } /* next relocation */ |
1898 | ||
1899 | if (free_relocs != NULL) | |
1900 | { | |
1901 | free (free_relocs); | |
1902 | free_relocs = NULL; | |
1903 | } | |
1904 | ||
1905 | if (free_contents != NULL) | |
1906 | { | |
1907 | if (! link_info->keep_memory) | |
1908 | free (free_contents); | |
1909 | /* Cache the section contents for elf_link_input_bfd. */ | |
1910 | else | |
1911 | elf_section_data (sec)->this_hdr.contents = contents; | |
1912 | ||
1913 | free_contents = NULL; | |
1914 | } | |
1915 | ||
1916 | if (shndx_buf != NULL) | |
1917 | { | |
1918 | shndx_hdr->contents = NULL; | |
1919 | free (shndx_buf); | |
1920 | } | |
1921 | ||
6772dd07 | 1922 | if (free_intsyms != NULL) |
49f58d10 JB |
1923 | { |
1924 | if (! link_info->keep_memory) | |
6772dd07 | 1925 | free (free_intsyms); |
49f58d10 JB |
1926 | /* Cache the symbols for elf_link_input_bfd. */ |
1927 | else | |
6772dd07 DD |
1928 | { |
1929 | symtab_hdr->contents = NULL /* (unsigned char *) intsyms*/; | |
1930 | } | |
49f58d10 | 1931 | |
6772dd07 | 1932 | free_intsyms = NULL; |
49f58d10 | 1933 | } |
49f58d10 JB |
1934 | |
1935 | return TRUE; | |
1936 | ||
1937 | error_return: | |
1938 | if (free_relocs != NULL) | |
1939 | free (free_relocs); | |
1940 | if (free_contents != NULL) | |
1941 | free (free_contents); | |
1942 | if (shndx_buf != NULL) | |
1943 | { | |
1944 | shndx_hdr->contents = NULL; | |
1945 | free (shndx_buf); | |
1946 | } | |
6772dd07 DD |
1947 | if (free_intsyms != NULL) |
1948 | free (free_intsyms); | |
49f58d10 JB |
1949 | return FALSE; |
1950 | } | |
1951 | ||
1952 | /* Delete some bytes from a section while relaxing. */ | |
1953 | ||
1954 | static bfd_boolean | |
1955 | m32c_elf_relax_delete_bytes | |
07d6d2b8 | 1956 | (bfd * abfd, |
49f58d10 JB |
1957 | asection * sec, |
1958 | bfd_vma addr, | |
07d6d2b8 | 1959 | int count) |
49f58d10 JB |
1960 | { |
1961 | Elf_Internal_Shdr *symtab_hdr; | |
1962 | Elf_Internal_Shdr *shndx_hdr; | |
1963 | int sec_shndx; | |
1964 | bfd_byte *contents; | |
1965 | Elf_Internal_Rela *irel; | |
1966 | Elf_Internal_Rela *irelend; | |
49f58d10 | 1967 | bfd_vma toaddr; |
6772dd07 DD |
1968 | Elf_Internal_Sym *isym; |
1969 | Elf_Internal_Sym *isymend; | |
1970 | Elf_Internal_Sym *intsyms; | |
49f58d10 JB |
1971 | Elf_External_Sym_Shndx *shndx_buf; |
1972 | Elf_External_Sym_Shndx *shndx; | |
1973 | struct elf_link_hash_entry ** sym_hashes; | |
1974 | struct elf_link_hash_entry ** end_hashes; | |
07d6d2b8 | 1975 | unsigned int symcount; |
6772dd07 | 1976 | |
49f58d10 JB |
1977 | contents = elf_section_data (sec)->this_hdr.contents; |
1978 | ||
49f58d10 JB |
1979 | toaddr = sec->size; |
1980 | ||
1981 | irel = elf_section_data (sec)->relocs; | |
1982 | irelend = irel + sec->reloc_count; | |
1983 | ||
1984 | /* Actually delete the bytes. */ | |
1985 | memmove (contents + addr, contents + addr + count, (size_t) (toaddr - addr - count)); | |
1986 | sec->size -= count; | |
1987 | ||
1988 | /* Adjust all the relocs. */ | |
1989 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel ++) | |
1990 | { | |
1991 | /* Get the new reloc address. */ | |
1992 | if (irel->r_offset > addr && irel->r_offset < toaddr) | |
1993 | irel->r_offset -= count; | |
6772dd07 DD |
1994 | |
1995 | if (ELF32_R_TYPE(irel->r_info) == R_M32C_RL_JUMP | |
1996 | && irel->r_addend == 0x10 /* one byte insn, no relocs */ | |
1997 | && irel->r_offset + 1 < addr | |
1998 | && irel->r_offset + 7 > addr) | |
1999 | { | |
2000 | bfd_vma disp; | |
2001 | unsigned char *insn = &contents[irel->r_offset]; | |
2002 | disp = *insn; | |
2003 | /* This is a JMP.S, which we have to manually update. */ | |
2004 | if (elf32_m32c_machine (abfd) == bfd_mach_m16c) | |
2005 | { | |
2006 | if ((*insn & 0xf8) != 0x60) | |
2007 | continue; | |
2008 | disp = (disp & 7); | |
2009 | } | |
2010 | else | |
2011 | { | |
2012 | if ((*insn & 0xce) != 0x4a) | |
2013 | continue; | |
2014 | disp = ((disp & 0x30) >> 3) | (disp & 1); | |
2015 | } | |
2016 | if (irel->r_offset + disp + 2 >= addr+count) | |
2017 | { | |
2018 | disp -= count; | |
2019 | if (elf32_m32c_machine (abfd) == bfd_mach_m16c) | |
2020 | { | |
2021 | *insn = (*insn & 0xf8) | disp; | |
2022 | } | |
2023 | else | |
2024 | { | |
2025 | *insn = (*insn & 0xce) | ((disp & 6) << 3) | (disp & 1); | |
2026 | } | |
2027 | } | |
2028 | } | |
49f58d10 JB |
2029 | } |
2030 | ||
2031 | /* Adjust the local symbols defined in this section. */ | |
6772dd07 DD |
2032 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; |
2033 | intsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2034 | isym = intsyms; | |
2035 | isymend = isym + symtab_hdr->sh_info; | |
2036 | ||
2037 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
6a40cf0c NC |
2038 | if (elf_symtab_shndx_list (abfd)) |
2039 | { | |
2040 | shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr; | |
2041 | shndx_buf = (Elf_External_Sym_Shndx *) shndx_hdr->contents; | |
2042 | } | |
2043 | else | |
2044 | { | |
2045 | shndx_hdr = NULL; | |
2046 | shndx_buf = NULL; | |
2047 | } | |
49f58d10 | 2048 | shndx = shndx_buf; |
49f58d10 | 2049 | |
6772dd07 DD |
2050 | for (; isym < isymend; isym++, shndx = (shndx ? shndx + 1 : NULL)) |
2051 | { | |
a109e2f5 DD |
2052 | /* If the symbol is in the range of memory we just moved, we |
2053 | have to adjust its value. */ | |
6772dd07 DD |
2054 | if ((int) isym->st_shndx == sec_shndx |
2055 | && isym->st_value > addr | |
2056 | && isym->st_value < toaddr) | |
49f58d10 | 2057 | { |
6772dd07 | 2058 | isym->st_value -= count; |
49f58d10 | 2059 | } |
a109e2f5 DD |
2060 | /* If the symbol *spans* the bytes we just deleted (i.e. it's |
2061 | *end* is in the moved bytes but it's *start* isn't), then we | |
2062 | must adjust its size. */ | |
2063 | if ((int) isym->st_shndx == sec_shndx | |
2064 | && isym->st_value < addr | |
2065 | && isym->st_value + isym->st_size > addr | |
2066 | && isym->st_value + isym->st_size < toaddr) | |
2067 | { | |
2068 | isym->st_size -= count; | |
2069 | } | |
49f58d10 JB |
2070 | } |
2071 | ||
2072 | /* Now adjust the global symbols defined in this section. */ | |
2073 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2074 | - symtab_hdr->sh_info); | |
2075 | sym_hashes = elf_sym_hashes (abfd); | |
2076 | // sym_hashes += symtab_hdr->sh_info; | |
2077 | end_hashes = sym_hashes + symcount; | |
2078 | ||
2079 | for (; sym_hashes < end_hashes; sym_hashes ++) | |
2080 | { | |
2081 | struct elf_link_hash_entry * sym_hash = * sym_hashes; | |
2082 | ||
2083 | if (sym_hash && | |
a109e2f5 | 2084 | (sym_hash->root.type == bfd_link_hash_defined |
49f58d10 | 2085 | || sym_hash->root.type == bfd_link_hash_defweak) |
a109e2f5 | 2086 | && sym_hash->root.u.def.section == sec) |
6772dd07 | 2087 | { |
a109e2f5 DD |
2088 | if (sym_hash->root.u.def.value > addr |
2089 | && sym_hash->root.u.def.value < toaddr) | |
2090 | { | |
2091 | sym_hash->root.u.def.value -= count; | |
2092 | } | |
2093 | if (sym_hash->root.u.def.value < addr | |
2094 | && sym_hash->root.u.def.value + sym_hash->size > addr | |
2095 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) | |
2096 | { | |
2097 | sym_hash->size -= count; | |
2098 | } | |
6772dd07 | 2099 | } |
49f58d10 JB |
2100 | } |
2101 | ||
2102 | return TRUE; | |
2103 | } | |
c006d697 DD |
2104 | \f |
2105 | /* This is for versions of gcc prior to 4.3. */ | |
2106 | static unsigned int | |
76c20d54 AM |
2107 | _bfd_m32c_elf_eh_frame_address_size (bfd *abfd, |
2108 | const asection *sec ATTRIBUTE_UNUSED) | |
c006d697 DD |
2109 | { |
2110 | if ((elf_elfheader (abfd)->e_flags & EF_M32C_CPU_MASK) == EF_M32C_CPU_M16C) | |
2111 | return 2; | |
2112 | return 4; | |
2113 | } | |
2114 | ||
49f58d10 JB |
2115 | \f |
2116 | ||
2117 | #define ELF_ARCH bfd_arch_m32c | |
2118 | #define ELF_MACHINE_CODE EM_M32C | |
ff7eeb89 | 2119 | #define ELF_MACHINE_ALT1 EM_M32C_OLD |
e1be4b13 | 2120 | #define ELF_MAXPAGESIZE 0x100 |
49f58d10 JB |
2121 | |
2122 | #if 0 | |
6d00b590 | 2123 | #define TARGET_BIG_SYM m32c_elf32_vec |
49f58d10 JB |
2124 | #define TARGET_BIG_NAME "elf32-m32c" |
2125 | #else | |
6d00b590 | 2126 | #define TARGET_LITTLE_SYM m32c_elf32_vec |
49f58d10 JB |
2127 | #define TARGET_LITTLE_NAME "elf32-m32c" |
2128 | #endif | |
2129 | ||
2130 | #define elf_info_to_howto_rel NULL | |
2131 | #define elf_info_to_howto m32c_info_to_howto_rela | |
2132 | #define elf_backend_object_p m32c_elf_object_p | |
2133 | #define elf_backend_relocate_section m32c_elf_relocate_section | |
07d6d2b8 | 2134 | #define elf_backend_check_relocs m32c_elf_check_relocs |
49f58d10 | 2135 | #define elf_backend_object_p m32c_elf_object_p |
07d6d2b8 | 2136 | #define elf_symbol_leading_char ('_') |
49f58d10 JB |
2137 | #define elf_backend_always_size_sections \ |
2138 | m32c_elf_always_size_sections | |
2139 | #define elf_backend_finish_dynamic_sections \ | |
2140 | m32c_elf_finish_dynamic_sections | |
2141 | ||
2142 | #define elf_backend_can_gc_sections 1 | |
c006d697 | 2143 | #define elf_backend_eh_frame_address_size _bfd_m32c_elf_eh_frame_address_size |
49f58d10 JB |
2144 | |
2145 | #define bfd_elf32_bfd_reloc_type_lookup m32c_reloc_type_lookup | |
157090f7 | 2146 | #define bfd_elf32_bfd_reloc_name_lookup m32c_reloc_name_lookup |
49f58d10 JB |
2147 | #define bfd_elf32_bfd_relax_section m32c_elf_relax_section |
2148 | #define bfd_elf32_bfd_set_private_flags m32c_elf_set_private_flags | |
2149 | #define bfd_elf32_bfd_merge_private_bfd_data m32c_elf_merge_private_bfd_data | |
2150 | #define bfd_elf32_bfd_print_private_bfd_data m32c_elf_print_private_bfd_data | |
2151 | ||
2152 | #include "elf32-target.h" |