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3d3d428f | 1 | /* BFD back-end for National Semiconductor's CR16 ELF |
fd67aa11 | 2 | Copyright (C) 2007-2024 Free Software Foundation, Inc. |
3d3d428f NC |
3 | Written by M R Swami Reddy. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
3d3d428f NC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software Foundation, | |
19 | Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
20 | ||
21 | #include "sysdep.h" | |
22 | #include "bfd.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "libiberty.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/cr16.h" | |
ca05ca5e | 28 | #include "elf32-cr16.h" |
3d3d428f | 29 | |
99706f30 SR |
30 | /* The cr16 linker needs to keep track of the number of relocs that |
31 | it decides to copy in check_relocs for each symbol. This is so | |
32 | that it can discard PC relative relocs if it doesn't need them when | |
33 | linking with -Bsymbolic. We store the information in a field | |
34 | extending the regular ELF linker hash table. */ | |
35 | ||
4dfe6ac6 NC |
36 | struct elf32_cr16_link_hash_entry |
37 | { | |
99706f30 SR |
38 | /* The basic elf link hash table entry. */ |
39 | struct elf_link_hash_entry root; | |
40 | ||
41 | /* For function symbols, the number of times this function is | |
42 | called directly (ie by name). */ | |
43 | unsigned int direct_calls; | |
44 | ||
45 | /* For function symbols, the size of this function's stack | |
46 | (if <= 255 bytes). We stuff this into "call" instructions | |
47 | to this target when it's valid and profitable to do so. | |
48 | ||
49 | This does not include stack allocated by movm! */ | |
50 | unsigned char stack_size; | |
51 | ||
52 | /* For function symbols, arguments (if any) for movm instruction | |
53 | in the prologue. We stuff this value into "call" instructions | |
54 | to the target when it's valid and profitable to do so. */ | |
55 | unsigned char movm_args; | |
56 | ||
57 | /* For function symbols, the amount of stack space that would be allocated | |
58 | by the movm instruction. This is redundant with movm_args, but we | |
59 | add it to the hash table to avoid computing it over and over. */ | |
60 | unsigned char movm_stack_size; | |
61 | ||
62 | /* Used to mark functions which have had redundant parts of their | |
63 | prologue deleted. */ | |
64 | #define CR16_DELETED_PROLOGUE_BYTES 0x1 | |
65 | unsigned char flags; | |
66 | ||
67 | /* Calculated value. */ | |
68 | bfd_vma value; | |
69 | }; | |
70 | ||
3d3d428f NC |
71 | /* cr16_reloc_map array maps BFD relocation enum into a CRGAS relocation type. */ |
72 | ||
73 | struct cr16_reloc_map | |
74 | { | |
75 | bfd_reloc_code_real_type bfd_reloc_enum; /* BFD relocation enum. */ | |
07d6d2b8 | 76 | unsigned short cr16_reloc_type; /* CR16 relocation type. */ |
3d3d428f NC |
77 | }; |
78 | ||
79 | static const struct cr16_reloc_map cr16_reloc_map[R_CR16_MAX] = | |
80 | { | |
07d6d2b8 AM |
81 | {BFD_RELOC_NONE, R_CR16_NONE}, |
82 | {BFD_RELOC_CR16_NUM8, R_CR16_NUM8}, | |
3d3d428f NC |
83 | {BFD_RELOC_CR16_NUM16, R_CR16_NUM16}, |
84 | {BFD_RELOC_CR16_NUM32, R_CR16_NUM32}, | |
85 | {BFD_RELOC_CR16_NUM32a, R_CR16_NUM32a}, | |
86 | {BFD_RELOC_CR16_REGREL4, R_CR16_REGREL4}, | |
87 | {BFD_RELOC_CR16_REGREL4a, R_CR16_REGREL4a}, | |
88 | {BFD_RELOC_CR16_REGREL14, R_CR16_REGREL14}, | |
89 | {BFD_RELOC_CR16_REGREL14a, R_CR16_REGREL14a}, | |
90 | {BFD_RELOC_CR16_REGREL16, R_CR16_REGREL16}, | |
91 | {BFD_RELOC_CR16_REGREL20, R_CR16_REGREL20}, | |
92 | {BFD_RELOC_CR16_REGREL20a, R_CR16_REGREL20a}, | |
93 | {BFD_RELOC_CR16_ABS20, R_CR16_ABS20}, | |
94 | {BFD_RELOC_CR16_ABS24, R_CR16_ABS24}, | |
07d6d2b8 AM |
95 | {BFD_RELOC_CR16_IMM4, R_CR16_IMM4}, |
96 | {BFD_RELOC_CR16_IMM8, R_CR16_IMM8}, | |
3d3d428f NC |
97 | {BFD_RELOC_CR16_IMM16, R_CR16_IMM16}, |
98 | {BFD_RELOC_CR16_IMM20, R_CR16_IMM20}, | |
99 | {BFD_RELOC_CR16_IMM24, R_CR16_IMM24}, | |
100 | {BFD_RELOC_CR16_IMM32, R_CR16_IMM32}, | |
101 | {BFD_RELOC_CR16_IMM32a, R_CR16_IMM32a}, | |
102 | {BFD_RELOC_CR16_DISP4, R_CR16_DISP4}, | |
103 | {BFD_RELOC_CR16_DISP8, R_CR16_DISP8}, | |
104 | {BFD_RELOC_CR16_DISP16, R_CR16_DISP16}, | |
105 | {BFD_RELOC_CR16_DISP24, R_CR16_DISP24}, | |
7fac7ff4 NC |
106 | {BFD_RELOC_CR16_DISP24a, R_CR16_DISP24a}, |
107 | {BFD_RELOC_CR16_SWITCH8, R_CR16_SWITCH8}, | |
108 | {BFD_RELOC_CR16_SWITCH16, R_CR16_SWITCH16}, | |
99706f30 SR |
109 | {BFD_RELOC_CR16_SWITCH32, R_CR16_SWITCH32}, |
110 | {BFD_RELOC_CR16_GOT_REGREL20, R_CR16_GOT_REGREL20}, | |
111 | {BFD_RELOC_CR16_GOTC_REGREL20, R_CR16_GOTC_REGREL20}, | |
112 | {BFD_RELOC_CR16_GLOB_DAT, R_CR16_GLOB_DAT} | |
3d3d428f NC |
113 | }; |
114 | ||
115 | static reloc_howto_type cr16_elf_howto_table[] = | |
116 | { | |
07d6d2b8 AM |
117 | HOWTO (R_CR16_NONE, /* type */ |
118 | 0, /* rightshift */ | |
c94cb026 | 119 | 0, /* size */ |
07d6d2b8 | 120 | 0, /* bitsize */ |
0a1b45a2 | 121 | false, /* pc_relative */ |
07d6d2b8 AM |
122 | 0, /* bitpos */ |
123 | complain_overflow_dont, /* complain_on_overflow */ | |
124 | bfd_elf_generic_reloc, /* special_function */ | |
125 | "R_CR16_NONE", /* name */ | |
0a1b45a2 | 126 | false, /* partial_inplace */ |
07d6d2b8 AM |
127 | 0, /* src_mask */ |
128 | 0, /* dst_mask */ | |
0a1b45a2 | 129 | false), /* pcrel_offset */ |
07d6d2b8 AM |
130 | |
131 | HOWTO (R_CR16_NUM8, /* type */ | |
132 | 0, /* rightshift */ | |
c94cb026 | 133 | 1, /* size */ |
07d6d2b8 | 134 | 8, /* bitsize */ |
0a1b45a2 | 135 | false, /* pc_relative */ |
07d6d2b8 AM |
136 | 0, /* bitpos */ |
137 | complain_overflow_bitfield,/* complain_on_overflow */ | |
138 | bfd_elf_generic_reloc, /* special_function */ | |
139 | "R_CR16_NUM8", /* name */ | |
0a1b45a2 | 140 | false, /* partial_inplace */ |
07d6d2b8 AM |
141 | 0x0, /* src_mask */ |
142 | 0xff, /* dst_mask */ | |
0a1b45a2 | 143 | false), /* pcrel_offset */ |
07d6d2b8 AM |
144 | |
145 | HOWTO (R_CR16_NUM16, /* type */ | |
146 | 0, /* rightshift */ | |
c94cb026 | 147 | 2, /* size */ |
07d6d2b8 | 148 | 16, /* bitsize */ |
0a1b45a2 | 149 | false, /* pc_relative */ |
07d6d2b8 AM |
150 | 0, /* bitpos */ |
151 | complain_overflow_bitfield,/* complain_on_overflow */ | |
152 | bfd_elf_generic_reloc, /* special_function */ | |
153 | "R_CR16_NUM16", /* name */ | |
0a1b45a2 | 154 | false, /* partial_inplace */ |
07d6d2b8 AM |
155 | 0x0, /* src_mask */ |
156 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 157 | false), /* pcrel_offset */ |
07d6d2b8 AM |
158 | |
159 | HOWTO (R_CR16_NUM32, /* type */ | |
160 | 0, /* rightshift */ | |
c94cb026 | 161 | 4, /* size */ |
07d6d2b8 | 162 | 32, /* bitsize */ |
0a1b45a2 | 163 | false, /* pc_relative */ |
07d6d2b8 AM |
164 | 0, /* bitpos */ |
165 | complain_overflow_bitfield,/* complain_on_overflow */ | |
166 | bfd_elf_generic_reloc, /* special_function */ | |
167 | "R_CR16_NUM32", /* name */ | |
0a1b45a2 | 168 | false, /* partial_inplace */ |
07d6d2b8 AM |
169 | 0x0, /* src_mask */ |
170 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 171 | false), /* pcrel_offset */ |
07d6d2b8 AM |
172 | |
173 | HOWTO (R_CR16_NUM32a, /* type */ | |
174 | 1, /* rightshift */ | |
c94cb026 | 175 | 4, /* size */ |
07d6d2b8 | 176 | 32, /* bitsize */ |
0a1b45a2 | 177 | false, /* pc_relative */ |
07d6d2b8 AM |
178 | 0, /* bitpos */ |
179 | complain_overflow_bitfield,/* complain_on_overflow */ | |
180 | bfd_elf_generic_reloc, /* special_function */ | |
181 | "R_CR16_NUM32a", /* name */ | |
0a1b45a2 | 182 | false, /* partial_inplace */ |
07d6d2b8 AM |
183 | 0x0, /* src_mask */ |
184 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 185 | false), /* pcrel_offset */ |
07d6d2b8 AM |
186 | |
187 | HOWTO (R_CR16_REGREL4, /* type */ | |
188 | 0, /* rightshift */ | |
c94cb026 | 189 | 1, /* size */ |
07d6d2b8 | 190 | 4, /* bitsize */ |
0a1b45a2 | 191 | false, /* pc_relative */ |
07d6d2b8 AM |
192 | 0, /* bitpos */ |
193 | complain_overflow_bitfield,/* complain_on_overflow */ | |
194 | bfd_elf_generic_reloc, /* special_function */ | |
195 | "R_CR16_REGREL4", /* name */ | |
0a1b45a2 | 196 | false, /* partial_inplace */ |
07d6d2b8 AM |
197 | 0x0, /* src_mask */ |
198 | 0xf, /* dst_mask */ | |
0a1b45a2 | 199 | false), /* pcrel_offset */ |
07d6d2b8 AM |
200 | |
201 | HOWTO (R_CR16_REGREL4a, /* type */ | |
202 | 0, /* rightshift */ | |
c94cb026 | 203 | 1, /* size */ |
07d6d2b8 | 204 | 4, /* bitsize */ |
0a1b45a2 | 205 | false, /* pc_relative */ |
07d6d2b8 AM |
206 | 0, /* bitpos */ |
207 | complain_overflow_bitfield,/* complain_on_overflow */ | |
208 | bfd_elf_generic_reloc, /* special_function */ | |
209 | "R_CR16_REGREL4a", /* name */ | |
0a1b45a2 | 210 | false, /* partial_inplace */ |
07d6d2b8 AM |
211 | 0x0, /* src_mask */ |
212 | 0xf, /* dst_mask */ | |
0a1b45a2 | 213 | false), /* pcrel_offset */ |
07d6d2b8 AM |
214 | |
215 | HOWTO (R_CR16_REGREL14, /* type */ | |
216 | 0, /* rightshift */ | |
c94cb026 | 217 | 2, /* size */ |
07d6d2b8 | 218 | 14, /* bitsize */ |
0a1b45a2 | 219 | false, /* pc_relative */ |
07d6d2b8 AM |
220 | 0, /* bitpos */ |
221 | complain_overflow_bitfield,/* complain_on_overflow */ | |
222 | bfd_elf_generic_reloc, /* special_function */ | |
223 | "R_CR16_REGREL14", /* name */ | |
0a1b45a2 | 224 | false, /* partial_inplace */ |
07d6d2b8 AM |
225 | 0x0, /* src_mask */ |
226 | 0x3fff, /* dst_mask */ | |
0a1b45a2 | 227 | false), /* pcrel_offset */ |
07d6d2b8 AM |
228 | |
229 | HOWTO (R_CR16_REGREL14a, /* type */ | |
230 | 0, /* rightshift */ | |
c94cb026 | 231 | 2, /* size */ |
07d6d2b8 | 232 | 14, /* bitsize */ |
0a1b45a2 | 233 | false, /* pc_relative */ |
07d6d2b8 AM |
234 | 0, /* bitpos */ |
235 | complain_overflow_bitfield,/* complain_on_overflow */ | |
236 | bfd_elf_generic_reloc, /* special_function */ | |
237 | "R_CR16_REGREL14a", /* name */ | |
0a1b45a2 | 238 | false, /* partial_inplace */ |
07d6d2b8 AM |
239 | 0x0, /* src_mask */ |
240 | 0x3fff, /* dst_mask */ | |
0a1b45a2 | 241 | false), /* pcrel_offset */ |
07d6d2b8 AM |
242 | |
243 | HOWTO (R_CR16_REGREL16, /* type */ | |
244 | 0, /* rightshift */ | |
c94cb026 | 245 | 2, /* size */ |
07d6d2b8 | 246 | 16, /* bitsize */ |
0a1b45a2 | 247 | false, /* pc_relative */ |
07d6d2b8 AM |
248 | 0, /* bitpos */ |
249 | complain_overflow_bitfield,/* complain_on_overflow */ | |
250 | bfd_elf_generic_reloc, /* special_function */ | |
251 | "R_CR16_REGREL16", /* name */ | |
0a1b45a2 | 252 | false, /* partial_inplace */ |
07d6d2b8 AM |
253 | 0x0, /* src_mask */ |
254 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 255 | false), /* pcrel_offset */ |
07d6d2b8 AM |
256 | |
257 | HOWTO (R_CR16_REGREL20, /* type */ | |
258 | 0, /* rightshift */ | |
c94cb026 | 259 | 4, /* size */ |
07d6d2b8 | 260 | 20, /* bitsize */ |
0a1b45a2 | 261 | false, /* pc_relative */ |
07d6d2b8 AM |
262 | 0, /* bitpos */ |
263 | complain_overflow_bitfield,/* complain_on_overflow */ | |
264 | bfd_elf_generic_reloc, /* special_function */ | |
265 | "R_CR16_REGREL20", /* name */ | |
0a1b45a2 | 266 | false, /* partial_inplace */ |
07d6d2b8 AM |
267 | 0x0, /* src_mask */ |
268 | 0xfffff, /* dst_mask */ | |
0a1b45a2 | 269 | false), /* pcrel_offset */ |
07d6d2b8 AM |
270 | |
271 | HOWTO (R_CR16_REGREL20a, /* type */ | |
272 | 0, /* rightshift */ | |
c94cb026 | 273 | 4, /* size */ |
07d6d2b8 | 274 | 20, /* bitsize */ |
0a1b45a2 | 275 | false, /* pc_relative */ |
07d6d2b8 AM |
276 | 0, /* bitpos */ |
277 | complain_overflow_bitfield,/* complain_on_overflow */ | |
278 | bfd_elf_generic_reloc, /* special_function */ | |
279 | "R_CR16_REGREL20a", /* name */ | |
0a1b45a2 | 280 | false, /* partial_inplace */ |
07d6d2b8 AM |
281 | 0x0, /* src_mask */ |
282 | 0xfffff, /* dst_mask */ | |
0a1b45a2 | 283 | false), /* pcrel_offset */ |
07d6d2b8 AM |
284 | |
285 | HOWTO (R_CR16_ABS20, /* type */ | |
286 | 0, /* rightshift */ | |
c94cb026 | 287 | 4, /* size */ |
07d6d2b8 | 288 | 20, /* bitsize */ |
0a1b45a2 | 289 | false, /* pc_relative */ |
07d6d2b8 AM |
290 | 0, /* bitpos */ |
291 | complain_overflow_bitfield,/* complain_on_overflow */ | |
292 | bfd_elf_generic_reloc, /* special_function */ | |
293 | "R_CR16_ABS20", /* name */ | |
0a1b45a2 | 294 | false, /* partial_inplace */ |
07d6d2b8 AM |
295 | 0x0, /* src_mask */ |
296 | 0xfffff, /* dst_mask */ | |
0a1b45a2 | 297 | false), /* pcrel_offset */ |
07d6d2b8 AM |
298 | |
299 | HOWTO (R_CR16_ABS24, /* type */ | |
300 | 0, /* rightshift */ | |
c94cb026 | 301 | 4, /* size */ |
07d6d2b8 | 302 | 24, /* bitsize */ |
0a1b45a2 | 303 | false, /* pc_relative */ |
07d6d2b8 AM |
304 | 0, /* bitpos */ |
305 | complain_overflow_bitfield,/* complain_on_overflow */ | |
306 | bfd_elf_generic_reloc, /* special_function */ | |
307 | "R_CR16_ABS24", /* name */ | |
0a1b45a2 | 308 | false, /* partial_inplace */ |
07d6d2b8 AM |
309 | 0x0, /* src_mask */ |
310 | 0xffffff, /* dst_mask */ | |
0a1b45a2 | 311 | false), /* pcrel_offset */ |
07d6d2b8 AM |
312 | |
313 | HOWTO (R_CR16_IMM4, /* type */ | |
314 | 0, /* rightshift */ | |
c94cb026 | 315 | 1, /* size */ |
07d6d2b8 | 316 | 4, /* bitsize */ |
0a1b45a2 | 317 | false, /* pc_relative */ |
07d6d2b8 AM |
318 | 0, /* bitpos */ |
319 | complain_overflow_bitfield,/* complain_on_overflow */ | |
320 | bfd_elf_generic_reloc, /* special_function */ | |
321 | "R_CR16_IMM4", /* name */ | |
0a1b45a2 | 322 | false, /* partial_inplace */ |
07d6d2b8 AM |
323 | 0x0, /* src_mask */ |
324 | 0xf, /* dst_mask */ | |
0a1b45a2 | 325 | false), /* pcrel_offset */ |
07d6d2b8 AM |
326 | |
327 | HOWTO (R_CR16_IMM8, /* type */ | |
328 | 0, /* rightshift */ | |
c94cb026 | 329 | 1, /* size */ |
07d6d2b8 | 330 | 8, /* bitsize */ |
0a1b45a2 | 331 | false, /* pc_relative */ |
07d6d2b8 AM |
332 | 0, /* bitpos */ |
333 | complain_overflow_bitfield,/* complain_on_overflow */ | |
334 | bfd_elf_generic_reloc, /* special_function */ | |
335 | "R_CR16_IMM8", /* name */ | |
0a1b45a2 | 336 | false, /* partial_inplace */ |
07d6d2b8 AM |
337 | 0x0, /* src_mask */ |
338 | 0xff, /* dst_mask */ | |
0a1b45a2 | 339 | false), /* pcrel_offset */ |
07d6d2b8 AM |
340 | |
341 | HOWTO (R_CR16_IMM16, /* type */ | |
342 | 0, /* rightshift */ | |
c94cb026 | 343 | 2, /* size */ |
07d6d2b8 | 344 | 16, /* bitsize */ |
0a1b45a2 | 345 | false, /* pc_relative */ |
07d6d2b8 AM |
346 | 0, /* bitpos */ |
347 | complain_overflow_bitfield,/* complain_on_overflow */ | |
348 | bfd_elf_generic_reloc, /* special_function */ | |
349 | "R_CR16_IMM16", /* name */ | |
0a1b45a2 | 350 | false, /* partial_inplace */ |
07d6d2b8 AM |
351 | 0x0, /* src_mask */ |
352 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 353 | false), /* pcrel_offset */ |
07d6d2b8 AM |
354 | |
355 | HOWTO (R_CR16_IMM20, /* type */ | |
356 | 0, /* rightshift */ | |
c94cb026 | 357 | 4, /* size */ |
07d6d2b8 | 358 | 20, /* bitsize */ |
0a1b45a2 | 359 | false, /* pc_relative */ |
07d6d2b8 AM |
360 | 0, /* bitpos */ |
361 | complain_overflow_bitfield,/* complain_on_overflow */ | |
362 | bfd_elf_generic_reloc, /* special_function */ | |
363 | "R_CR16_IMM20", /* name */ | |
0a1b45a2 | 364 | false, /* partial_inplace */ |
07d6d2b8 AM |
365 | 0x0, /* src_mask */ |
366 | 0xfffff, /* dst_mask */ | |
0a1b45a2 | 367 | false), /* pcrel_offset */ |
07d6d2b8 AM |
368 | |
369 | HOWTO (R_CR16_IMM24, /* type */ | |
370 | 0, /* rightshift */ | |
c94cb026 | 371 | 4, /* size */ |
07d6d2b8 | 372 | 24, /* bitsize */ |
0a1b45a2 | 373 | false, /* pc_relative */ |
07d6d2b8 AM |
374 | 0, /* bitpos */ |
375 | complain_overflow_bitfield,/* complain_on_overflow */ | |
376 | bfd_elf_generic_reloc, /* special_function */ | |
377 | "R_CR16_IMM24", /* name */ | |
0a1b45a2 | 378 | false, /* partial_inplace */ |
07d6d2b8 AM |
379 | 0x0, /* src_mask */ |
380 | 0xffffff, /* dst_mask */ | |
0a1b45a2 | 381 | false), /* pcrel_offset */ |
07d6d2b8 AM |
382 | |
383 | HOWTO (R_CR16_IMM32, /* type */ | |
384 | 0, /* rightshift */ | |
c94cb026 | 385 | 4, /* size */ |
07d6d2b8 | 386 | 32, /* bitsize */ |
0a1b45a2 | 387 | false, /* pc_relative */ |
07d6d2b8 AM |
388 | 0, /* bitpos */ |
389 | complain_overflow_bitfield,/* complain_on_overflow */ | |
390 | bfd_elf_generic_reloc, /* special_function */ | |
391 | "R_CR16_IMM32", /* name */ | |
0a1b45a2 | 392 | false, /* partial_inplace */ |
07d6d2b8 AM |
393 | 0x0, /* src_mask */ |
394 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 395 | false), /* pcrel_offset */ |
07d6d2b8 AM |
396 | |
397 | HOWTO (R_CR16_IMM32a, /* type */ | |
398 | 1, /* rightshift */ | |
c94cb026 | 399 | 4, /* size */ |
07d6d2b8 | 400 | 32, /* bitsize */ |
0a1b45a2 | 401 | false, /* pc_relative */ |
07d6d2b8 AM |
402 | 0, /* bitpos */ |
403 | complain_overflow_bitfield,/* complain_on_overflow */ | |
404 | bfd_elf_generic_reloc, /* special_function */ | |
405 | "R_CR16_IMM32a", /* name */ | |
0a1b45a2 | 406 | false, /* partial_inplace */ |
07d6d2b8 AM |
407 | 0x0, /* src_mask */ |
408 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 409 | false), /* pcrel_offset */ |
07d6d2b8 AM |
410 | |
411 | HOWTO (R_CR16_DISP4, /* type */ | |
412 | 1, /* rightshift */ | |
c94cb026 | 413 | 1, /* size */ |
07d6d2b8 | 414 | 4, /* bitsize */ |
0a1b45a2 | 415 | true, /* pc_relative */ |
07d6d2b8 AM |
416 | 0, /* bitpos */ |
417 | complain_overflow_unsigned, /* complain_on_overflow */ | |
418 | bfd_elf_generic_reloc, /* special_function */ | |
419 | "R_CR16_DISP4", /* name */ | |
0a1b45a2 | 420 | false, /* partial_inplace */ |
07d6d2b8 AM |
421 | 0x0, /* src_mask */ |
422 | 0xf, /* dst_mask */ | |
0a1b45a2 | 423 | false), /* pcrel_offset */ |
07d6d2b8 AM |
424 | |
425 | HOWTO (R_CR16_DISP8, /* type */ | |
426 | 1, /* rightshift */ | |
c94cb026 | 427 | 1, /* size */ |
07d6d2b8 | 428 | 8, /* bitsize */ |
0a1b45a2 | 429 | true, /* pc_relative */ |
07d6d2b8 AM |
430 | 0, /* bitpos */ |
431 | complain_overflow_unsigned, /* complain_on_overflow */ | |
432 | bfd_elf_generic_reloc, /* special_function */ | |
433 | "R_CR16_DISP8", /* name */ | |
0a1b45a2 | 434 | false, /* partial_inplace */ |
07d6d2b8 AM |
435 | 0x0, /* src_mask */ |
436 | 0x1ff, /* dst_mask */ | |
0a1b45a2 | 437 | false), /* pcrel_offset */ |
07d6d2b8 AM |
438 | |
439 | HOWTO (R_CR16_DISP16, /* type */ | |
440 | 0, /* rightshift REVIITS: To sync with WinIDEA*/ | |
c94cb026 | 441 | 2, /* size */ |
07d6d2b8 | 442 | 16, /* bitsize */ |
0a1b45a2 | 443 | true, /* pc_relative */ |
07d6d2b8 AM |
444 | 0, /* bitpos */ |
445 | complain_overflow_unsigned, /* complain_on_overflow */ | |
446 | bfd_elf_generic_reloc, /* special_function */ | |
447 | "R_CR16_DISP16", /* name */ | |
0a1b45a2 | 448 | false, /* partial_inplace */ |
07d6d2b8 AM |
449 | 0x0, /* src_mask */ |
450 | 0x1ffff, /* dst_mask */ | |
0a1b45a2 | 451 | false), /* pcrel_offset */ |
3d3d428f NC |
452 | /* REVISIT: DISP24 should be left-shift by 2 as per ISA doc |
453 | but its not done, to sync with WinIDEA and CR16 4.1 tools */ | |
07d6d2b8 AM |
454 | HOWTO (R_CR16_DISP24, /* type */ |
455 | 0, /* rightshift */ | |
c94cb026 | 456 | 4, /* size */ |
07d6d2b8 | 457 | 24, /* bitsize */ |
0a1b45a2 | 458 | true, /* pc_relative */ |
07d6d2b8 AM |
459 | 0, /* bitpos */ |
460 | complain_overflow_unsigned, /* complain_on_overflow */ | |
461 | bfd_elf_generic_reloc, /* special_function */ | |
462 | "R_CR16_DISP24", /* name */ | |
0a1b45a2 | 463 | false, /* partial_inplace */ |
07d6d2b8 AM |
464 | 0x0, /* src_mask */ |
465 | 0x1ffffff, /* dst_mask */ | |
0a1b45a2 | 466 | false), /* pcrel_offset */ |
07d6d2b8 AM |
467 | |
468 | HOWTO (R_CR16_DISP24a, /* type */ | |
469 | 0, /* rightshift */ | |
c94cb026 | 470 | 4, /* size */ |
07d6d2b8 | 471 | 24, /* bitsize */ |
0a1b45a2 | 472 | true, /* pc_relative */ |
07d6d2b8 AM |
473 | 0, /* bitpos */ |
474 | complain_overflow_unsigned, /* complain_on_overflow */ | |
475 | bfd_elf_generic_reloc, /* special_function */ | |
476 | "R_CR16_DISP24a", /* name */ | |
0a1b45a2 | 477 | false, /* partial_inplace */ |
07d6d2b8 AM |
478 | 0x0, /* src_mask */ |
479 | 0xffffff, /* dst_mask */ | |
0a1b45a2 | 480 | false), /* pcrel_offset */ |
7fac7ff4 NC |
481 | |
482 | /* An 8 bit switch table entry. This is generated for an expression | |
483 | such as ``.byte L1 - L2''. The offset holds the difference | |
484 | between the reloc address and L2. */ | |
07d6d2b8 AM |
485 | HOWTO (R_CR16_SWITCH8, /* type */ |
486 | 0, /* rightshift */ | |
c94cb026 | 487 | 1, /* size */ |
07d6d2b8 | 488 | 8, /* bitsize */ |
0a1b45a2 | 489 | false, /* pc_relative */ |
07d6d2b8 AM |
490 | 0, /* bitpos */ |
491 | complain_overflow_unsigned, /* complain_on_overflow */ | |
492 | bfd_elf_generic_reloc, /* special_function */ | |
493 | "R_CR16_SWITCH8", /* name */ | |
0a1b45a2 | 494 | false, /* partial_inplace */ |
07d6d2b8 AM |
495 | 0x0, /* src_mask */ |
496 | 0xff, /* dst_mask */ | |
0a1b45a2 | 497 | true), /* pcrel_offset */ |
7fac7ff4 NC |
498 | |
499 | /* A 16 bit switch table entry. This is generated for an expression | |
500 | such as ``.word L1 - L2''. The offset holds the difference | |
501 | between the reloc address and L2. */ | |
07d6d2b8 AM |
502 | HOWTO (R_CR16_SWITCH16, /* type */ |
503 | 0, /* rightshift */ | |
c94cb026 | 504 | 2, /* size */ |
07d6d2b8 | 505 | 16, /* bitsize */ |
0a1b45a2 | 506 | false, /* pc_relative */ |
07d6d2b8 AM |
507 | 0, /* bitpos */ |
508 | complain_overflow_unsigned, /* complain_on_overflow */ | |
509 | bfd_elf_generic_reloc, /* special_function */ | |
510 | "R_CR16_SWITCH16", /* name */ | |
0a1b45a2 | 511 | false, /* partial_inplace */ |
07d6d2b8 AM |
512 | 0x0, /* src_mask */ |
513 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 514 | true), /* pcrel_offset */ |
7fac7ff4 NC |
515 | |
516 | /* A 32 bit switch table entry. This is generated for an expression | |
517 | such as ``.long L1 - L2''. The offset holds the difference | |
518 | between the reloc address and L2. */ | |
07d6d2b8 AM |
519 | HOWTO (R_CR16_SWITCH32, /* type */ |
520 | 0, /* rightshift */ | |
c94cb026 | 521 | 4, /* size */ |
07d6d2b8 | 522 | 32, /* bitsize */ |
0a1b45a2 | 523 | false, /* pc_relative */ |
07d6d2b8 AM |
524 | 0, /* bitpos */ |
525 | complain_overflow_unsigned, /* complain_on_overflow */ | |
526 | bfd_elf_generic_reloc, /* special_function */ | |
527 | "R_CR16_SWITCH32", /* name */ | |
0a1b45a2 | 528 | false, /* partial_inplace */ |
07d6d2b8 AM |
529 | 0x0, /* src_mask */ |
530 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 531 | true), /* pcrel_offset */ |
07d6d2b8 AM |
532 | |
533 | HOWTO (R_CR16_GOT_REGREL20, /* type */ | |
534 | 0, /* rightshift */ | |
c94cb026 | 535 | 4, /* size */ |
07d6d2b8 | 536 | 20, /* bitsize */ |
0a1b45a2 | 537 | false, /* pc_relative */ |
07d6d2b8 AM |
538 | 0, /* bitpos */ |
539 | complain_overflow_bitfield,/* complain_on_overflow */ | |
540 | bfd_elf_generic_reloc, /* special_function */ | |
541 | "R_CR16_GOT_REGREL20", /* name */ | |
0a1b45a2 | 542 | true, /* partial_inplace */ |
07d6d2b8 AM |
543 | 0x0, /* src_mask */ |
544 | 0xfffff, /* dst_mask */ | |
0a1b45a2 | 545 | false), /* pcrel_offset */ |
07d6d2b8 AM |
546 | |
547 | HOWTO (R_CR16_GOTC_REGREL20, /* type */ | |
548 | 0, /* rightshift */ | |
c94cb026 | 549 | 4, /* size */ |
07d6d2b8 | 550 | 20, /* bitsize */ |
0a1b45a2 | 551 | false, /* pc_relative */ |
07d6d2b8 AM |
552 | 0, /* bitpos */ |
553 | complain_overflow_bitfield,/* complain_on_overflow */ | |
554 | bfd_elf_generic_reloc, /* special_function */ | |
555 | "R_CR16_GOTC_REGREL20", /* name */ | |
0a1b45a2 | 556 | true, /* partial_inplace */ |
07d6d2b8 AM |
557 | 0x0, /* src_mask */ |
558 | 0xfffff, /* dst_mask */ | |
0a1b45a2 | 559 | false), /* pcrel_offset */ |
07d6d2b8 AM |
560 | |
561 | HOWTO (R_CR16_GLOB_DAT, /* type */ | |
562 | 0, /* rightshift */ | |
c94cb026 | 563 | 4, /* size */ |
07d6d2b8 | 564 | 32, /* bitsize */ |
0a1b45a2 | 565 | false, /* pc_relative */ |
07d6d2b8 AM |
566 | 0, /* bitpos */ |
567 | complain_overflow_unsigned, /* complain_on_overflow */ | |
568 | bfd_elf_generic_reloc, /* special_function */ | |
569 | "R_CR16_GLOB_DAT", /* name */ | |
0a1b45a2 | 570 | false, /* partial_inplace */ |
07d6d2b8 AM |
571 | 0x0, /* src_mask */ |
572 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 573 | true) /* pcrel_offset */ |
3d3d428f NC |
574 | }; |
575 | ||
99706f30 SR |
576 | |
577 | /* Create the GOT section. */ | |
578 | ||
0a1b45a2 | 579 | static bool |
99706f30 SR |
580 | _bfd_cr16_elf_create_got_section (bfd * abfd, struct bfd_link_info * info) |
581 | { | |
582 | flagword flags; | |
583 | asection * s; | |
584 | struct elf_link_hash_entry * h; | |
585 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); | |
ce558b89 | 586 | struct elf_link_hash_table *htab = elf_hash_table (info); |
99706f30 SR |
587 | int ptralign; |
588 | ||
589 | /* This function may be called more than once. */ | |
ce558b89 | 590 | if (htab->sgot != NULL) |
0a1b45a2 | 591 | return true; |
99706f30 SR |
592 | |
593 | switch (bed->s->arch_size) | |
594 | { | |
595 | case 16: | |
596 | ptralign = 1; | |
597 | break; | |
598 | ||
599 | case 32: | |
600 | ptralign = 2; | |
601 | break; | |
602 | ||
603 | default: | |
604 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 605 | return false; |
99706f30 SR |
606 | } |
607 | ||
608 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
07d6d2b8 | 609 | | SEC_LINKER_CREATED); |
99706f30 | 610 | |
3d4d4302 | 611 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
ce558b89 | 612 | htab->sgot= s; |
99706f30 | 613 | if (s == NULL |
fd361982 | 614 | || !bfd_set_section_alignment (s, ptralign)) |
0a1b45a2 | 615 | return false; |
99706f30 SR |
616 | |
617 | if (bed->want_got_plt) | |
618 | { | |
3d4d4302 | 619 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); |
ce558b89 | 620 | htab->sgotplt = s; |
99706f30 | 621 | if (s == NULL |
fd361982 | 622 | || !bfd_set_section_alignment (s, ptralign)) |
0a1b45a2 | 623 | return false; |
99706f30 SR |
624 | } |
625 | ||
626 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
627 | (or .got.plt) section. We don't do this in the linker script | |
628 | because we don't want to define the symbol if we are not creating | |
629 | a global offset table. */ | |
630 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); | |
ce558b89 | 631 | htab->hgot = h; |
99706f30 | 632 | if (h == NULL) |
0a1b45a2 | 633 | return false; |
99706f30 SR |
634 | |
635 | /* The first bit of the global offset table is the header. */ | |
636 | s->size += bed->got_header_size; | |
637 | ||
0a1b45a2 | 638 | return true; |
99706f30 SR |
639 | } |
640 | ||
641 | ||
3d3d428f NC |
642 | /* Retrieve a howto ptr using a BFD reloc_code. */ |
643 | ||
644 | static reloc_howto_type * | |
0aa13fee | 645 | elf_cr16_reloc_type_lookup (bfd *abfd, |
07d6d2b8 | 646 | bfd_reloc_code_real_type code) |
3d3d428f NC |
647 | { |
648 | unsigned int i; | |
649 | ||
650 | for (i = 0; i < R_CR16_MAX; i++) | |
651 | if (code == cr16_reloc_map[i].bfd_reloc_enum) | |
652 | return &cr16_elf_howto_table[cr16_reloc_map[i].cr16_reloc_type]; | |
653 | ||
0aa13fee AM |
654 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
655 | abfd, code); | |
3d3d428f NC |
656 | return NULL; |
657 | } | |
658 | ||
659 | static reloc_howto_type * | |
660 | elf_cr16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
07d6d2b8 | 661 | const char *r_name) |
3d3d428f NC |
662 | { |
663 | unsigned int i; | |
664 | ||
665 | for (i = 0; ARRAY_SIZE (cr16_elf_howto_table); i++) | |
666 | if (cr16_elf_howto_table[i].name != NULL | |
07d6d2b8 | 667 | && strcasecmp (cr16_elf_howto_table[i].name, r_name) == 0) |
3d3d428f NC |
668 | return cr16_elf_howto_table + i; |
669 | ||
670 | return NULL; | |
671 | } | |
672 | ||
673 | /* Retrieve a howto ptr using an internal relocation entry. */ | |
674 | ||
0a1b45a2 | 675 | static bool |
0aa13fee | 676 | elf_cr16_info_to_howto (bfd *abfd, arelent *cache_ptr, |
07d6d2b8 | 677 | Elf_Internal_Rela *dst) |
3d3d428f NC |
678 | { |
679 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
680 | ||
cd21f5da NC |
681 | if (r_type >= R_CR16_MAX) |
682 | { | |
695344c0 | 683 | /* xgettext:c-format */ |
0aa13fee | 684 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 685 | abfd, r_type); |
cd21f5da | 686 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 687 | return false; |
cd21f5da | 688 | } |
99706f30 | 689 | cache_ptr->howto = cr16_elf_howto_table + r_type; |
0a1b45a2 | 690 | return true; |
99706f30 SR |
691 | } |
692 | ||
693 | /* Look through the relocs for a section during the first phase. | |
694 | Since we don't do .gots or .plts, we just need to consider the | |
695 | virtual table relocs for gc. */ | |
696 | ||
0a1b45a2 | 697 | static bool |
99706f30 | 698 | cr16_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
07d6d2b8 | 699 | const Elf_Internal_Rela *relocs) |
99706f30 SR |
700 | { |
701 | Elf_Internal_Shdr *symtab_hdr; | |
702 | Elf_Internal_Sym * isymbuf = NULL; | |
9bc8e54b | 703 | struct elf_link_hash_entry **sym_hashes; |
99706f30 SR |
704 | const Elf_Internal_Rela *rel; |
705 | const Elf_Internal_Rela *rel_end; | |
706 | bfd * dynobj; | |
707 | bfd_vma * local_got_offsets; | |
708 | asection * sgot; | |
709 | asection * srelgot; | |
710 | ||
711 | sgot = NULL; | |
712 | srelgot = NULL; | |
0a1b45a2 | 713 | bool result = false; |
99706f30 | 714 | |
0e1862bb | 715 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 716 | return true; |
99706f30 SR |
717 | |
718 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
719 | sym_hashes = elf_sym_hashes (abfd); | |
99706f30 SR |
720 | |
721 | dynobj = elf_hash_table (info)->dynobj; | |
722 | local_got_offsets = elf_local_got_offsets (abfd); | |
723 | rel_end = relocs + sec->reloc_count; | |
724 | for (rel = relocs; rel < rel_end; rel++) | |
725 | { | |
726 | struct elf_link_hash_entry *h; | |
727 | unsigned long r_symndx; | |
728 | ||
729 | r_symndx = ELF32_R_SYM (rel->r_info); | |
730 | if (r_symndx < symtab_hdr->sh_info) | |
07d6d2b8 | 731 | h = NULL; |
99706f30 | 732 | else |
07d6d2b8 AM |
733 | { |
734 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
735 | while (h->root.type == bfd_link_hash_indirect | |
736 | || h->root.type == bfd_link_hash_warning) | |
737 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
738 | } | |
99706f30 SR |
739 | |
740 | /* Some relocs require a global offset table. */ | |
741 | if (dynobj == NULL) | |
07d6d2b8 AM |
742 | { |
743 | switch (ELF32_R_TYPE (rel->r_info)) | |
744 | { | |
745 | case R_CR16_GOT_REGREL20: | |
746 | case R_CR16_GOTC_REGREL20: | |
747 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
748 | if (! _bfd_cr16_elf_create_got_section (dynobj, info)) | |
749 | goto fail; | |
750 | break; | |
751 | ||
752 | default: | |
753 | break; | |
754 | } | |
755 | } | |
99706f30 SR |
756 | |
757 | switch (ELF32_R_TYPE (rel->r_info)) | |
07d6d2b8 AM |
758 | { |
759 | case R_CR16_GOT_REGREL20: | |
760 | case R_CR16_GOTC_REGREL20: | |
761 | /* This symbol requires a global offset table entry. */ | |
99706f30 | 762 | |
ce558b89 AM |
763 | sgot = elf_hash_table (info)->sgot; |
764 | srelgot = elf_hash_table (info)->srelgot; | |
765 | BFD_ASSERT (sgot != NULL && srelgot != NULL); | |
99706f30 | 766 | |
07d6d2b8 AM |
767 | if (h != NULL) |
768 | { | |
769 | if (h->got.offset != (bfd_vma) -1) | |
770 | /* We have already allocated space in the .got. */ | |
771 | break; | |
772 | ||
773 | h->got.offset = sgot->size; | |
774 | ||
775 | /* Make sure this symbol is output as a dynamic symbol. */ | |
776 | if (h->dynindx == -1) | |
777 | { | |
778 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
779 | goto fail; | |
780 | } | |
781 | ||
782 | srelgot->size += sizeof (Elf32_External_Rela); | |
783 | } | |
784 | else | |
785 | { | |
786 | /* This is a global offset table entry for a local | |
787 | symbol. */ | |
788 | if (local_got_offsets == NULL) | |
789 | { | |
790 | size_t size; | |
791 | unsigned int i; | |
792 | ||
793 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
794 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
795 | ||
796 | if (local_got_offsets == NULL) | |
797 | goto fail; | |
798 | ||
799 | elf_local_got_offsets (abfd) = local_got_offsets; | |
800 | ||
801 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
802 | local_got_offsets[i] = (bfd_vma) -1; | |
803 | } | |
804 | ||
805 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
806 | /* We have already allocated space in the .got. */ | |
807 | break; | |
808 | ||
809 | local_got_offsets[r_symndx] = sgot->size; | |
810 | ||
811 | if (bfd_link_executable (info)) | |
812 | /* If we are generating a shared object, we need to | |
813 | output a R_CR16_RELATIVE reloc so that the dynamic | |
814 | linker can adjust this GOT entry. */ | |
815 | srelgot->size += sizeof (Elf32_External_Rela); | |
816 | } | |
817 | ||
818 | sgot->size += 4; | |
819 | break; | |
820 | ||
821 | } | |
99706f30 SR |
822 | } |
823 | ||
0a1b45a2 | 824 | result = true; |
c9594989 AM |
825 | fail: |
826 | free (isymbuf); | |
99706f30 SR |
827 | |
828 | return result; | |
3d3d428f NC |
829 | } |
830 | ||
831 | /* Perform a relocation as part of a final link. */ | |
832 | ||
833 | static bfd_reloc_status_type | |
834 | cr16_elf_final_link_relocate (reloc_howto_type *howto, | |
07d6d2b8 AM |
835 | bfd *input_bfd, |
836 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
837 | asection *input_section, | |
838 | bfd_byte *contents, | |
839 | bfd_vma offset, | |
840 | bfd_vma Rvalue, | |
841 | bfd_vma addend, | |
842 | struct elf_link_hash_entry * h, | |
843 | unsigned long symndx ATTRIBUTE_UNUSED, | |
844 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
845 | asection *sec ATTRIBUTE_UNUSED, | |
846 | int is_local ATTRIBUTE_UNUSED) | |
3d3d428f NC |
847 | { |
848 | unsigned short r_type = howto->type; | |
849 | bfd_byte *hit_data = contents + offset; | |
850 | bfd_vma reloc_bits, check, Rvalue1; | |
99706f30 | 851 | |
3d3d428f NC |
852 | switch (r_type) |
853 | { | |
db75b8f7 AM |
854 | case R_CR16_IMM4: |
855 | case R_CR16_IMM20: | |
856 | case R_CR16_ABS20: | |
857 | break; | |
858 | ||
859 | case R_CR16_IMM8: | |
860 | case R_CR16_IMM16: | |
861 | case R_CR16_IMM32: | |
862 | case R_CR16_IMM32a: | |
863 | case R_CR16_REGREL4: | |
864 | case R_CR16_REGREL4a: | |
865 | case R_CR16_REGREL14: | |
866 | case R_CR16_REGREL14a: | |
867 | case R_CR16_REGREL16: | |
868 | case R_CR16_REGREL20: | |
869 | case R_CR16_REGREL20a: | |
870 | case R_CR16_GOT_REGREL20: | |
871 | case R_CR16_GOTC_REGREL20: | |
872 | case R_CR16_ABS24: | |
873 | case R_CR16_DISP16: | |
874 | case R_CR16_DISP24: | |
875 | /* 'hit_data' is relative to the start of the instruction, not the | |
876 | relocation offset. Advance it to account for the exact offset. */ | |
877 | hit_data += 2; | |
878 | break; | |
879 | ||
880 | case R_CR16_NONE: | |
881 | return bfd_reloc_ok; | |
882 | break; | |
883 | ||
884 | case R_CR16_DISP4: | |
885 | if (is_local) | |
07d6d2b8 | 886 | Rvalue += -1; |
db75b8f7 | 887 | break; |
7fac7ff4 | 888 | |
db75b8f7 AM |
889 | case R_CR16_DISP8: |
890 | case R_CR16_DISP24a: | |
891 | if (is_local) | |
07d6d2b8 | 892 | Rvalue -= -1; |
db75b8f7 | 893 | break; |
7fac7ff4 | 894 | |
db75b8f7 AM |
895 | case R_CR16_SWITCH8: |
896 | case R_CR16_SWITCH16: | |
897 | case R_CR16_SWITCH32: | |
898 | /* We only care about the addend, where the difference between | |
899 | expressions is kept. */ | |
900 | Rvalue = 0; | |
68ffbac6 | 901 | |
db75b8f7 AM |
902 | default: |
903 | break; | |
3d3d428f NC |
904 | } |
905 | ||
906 | if (howto->pc_relative) | |
907 | { | |
908 | /* Subtract the address of the section containing the location. */ | |
909 | Rvalue -= (input_section->output_section->vma | |
07d6d2b8 | 910 | + input_section->output_offset); |
3d3d428f NC |
911 | /* Subtract the position of the location within the section. */ |
912 | Rvalue -= offset; | |
913 | } | |
914 | ||
915 | /* Add in supplied addend. */ | |
916 | Rvalue += addend; | |
917 | ||
918 | /* Complain if the bitfield overflows, whether it is considered | |
919 | as signed or unsigned. */ | |
920 | check = Rvalue >> howto->rightshift; | |
921 | ||
34d8e6d0 | 922 | reloc_bits = ((bfd_vma) 1 << (howto->bitsize - 1) << 1) - 1; |
3d3d428f | 923 | |
99706f30 SR |
924 | /* For GOT and GOTC relocs no boundary checks applied. */ |
925 | if (!((r_type == R_CR16_GOT_REGREL20) | |
db75b8f7 | 926 | || (r_type == R_CR16_GOTC_REGREL20))) |
3d3d428f | 927 | { |
99706f30 | 928 | if (((bfd_vma) check & ~reloc_bits) != 0 |
07d6d2b8 | 929 | && (((bfd_vma) check & ~reloc_bits) |
db75b8f7 | 930 | != (-(bfd_vma) 1 & ~reloc_bits))) |
07d6d2b8 AM |
931 | { |
932 | /* The above right shift is incorrect for a signed | |
933 | value. See if turning on the upper bits fixes the | |
934 | overflow. */ | |
935 | if (howto->rightshift && (bfd_signed_vma) Rvalue < 0) | |
936 | { | |
db75b8f7 AM |
937 | check |= ((bfd_vma) -1 |
938 | & ~((bfd_vma) -1 >> howto->rightshift)); | |
07d6d2b8 AM |
939 | |
940 | if (((bfd_vma) check & ~reloc_bits) | |
941 | != (-(bfd_vma) 1 & ~reloc_bits)) | |
db75b8f7 | 942 | return bfd_reloc_overflow; |
07d6d2b8 AM |
943 | } |
944 | else | |
945 | return bfd_reloc_overflow; | |
946 | } | |
3d3d428f | 947 | |
99706f30 SR |
948 | /* Drop unwanted bits from the value we are relocating to. */ |
949 | Rvalue >>= (bfd_vma) howto->rightshift; | |
3d3d428f | 950 | |
99706f30 SR |
951 | /* Apply dst_mask to select only relocatable part of the insn. */ |
952 | Rvalue &= howto->dst_mask; | |
953 | } | |
3d3d428f | 954 | |
57698478 | 955 | switch (bfd_get_reloc_size (howto)) |
3d3d428f | 956 | { |
57698478 | 957 | case 1: |
db75b8f7 AM |
958 | if (r_type == R_CR16_DISP8) |
959 | { | |
960 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
961 | Rvalue = ((Rvalue1 & 0xf000) | ((Rvalue << 4) & 0xf00) | |
962 | | (Rvalue1 & 0x00f0) | (Rvalue & 0xf)); | |
963 | bfd_put_16 (input_bfd, Rvalue, hit_data); | |
964 | } | |
965 | else if (r_type == R_CR16_IMM4) | |
966 | { | |
967 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
968 | Rvalue = (((Rvalue1 & 0xff) << 8) | ((Rvalue << 4) & 0xf0) | |
969 | | ((Rvalue1 & 0x0f00) >> 8)); | |
970 | bfd_put_16 (input_bfd, Rvalue, hit_data); | |
971 | } | |
972 | else if (r_type == R_CR16_DISP4) | |
973 | { | |
974 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
975 | Rvalue = (Rvalue1 | ((Rvalue & 0xf) << 4)); | |
976 | bfd_put_16 (input_bfd, Rvalue, hit_data); | |
977 | } | |
978 | else | |
979 | { | |
980 | bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data); | |
981 | } | |
982 | break; | |
983 | ||
57698478 | 984 | case 2: |
db75b8f7 AM |
985 | if (r_type == R_CR16_DISP16) |
986 | { | |
987 | Rvalue |= (bfd_get_16 (input_bfd, hit_data)); | |
988 | Rvalue = ((Rvalue & 0xfffe) | ((Rvalue >> 16) & 0x1)); | |
989 | } | |
990 | if (r_type == R_CR16_IMM16) | |
991 | { | |
992 | Rvalue1 = bfd_get_16 (input_bfd, hit_data); | |
993 | ||
994 | Rvalue1 = (Rvalue1 ^ 0x8000) - 0x8000; | |
995 | Rvalue += Rvalue1; | |
07d6d2b8 | 996 | |
db75b8f7 AM |
997 | /* Check for range. */ |
998 | if (Rvalue > 0xffff) | |
999 | return bfd_reloc_overflow; | |
1000 | } | |
07d6d2b8 | 1001 | |
db75b8f7 AM |
1002 | bfd_put_16 (input_bfd, Rvalue, hit_data); |
1003 | break; | |
3d3d428f | 1004 | |
57698478 | 1005 | case 4: |
db75b8f7 AM |
1006 | if ((r_type == R_CR16_ABS20) || (r_type == R_CR16_IMM20)) |
1007 | { | |
1008 | Rvalue1 = (bfd_get_16 (input_bfd, hit_data + 2) | |
1009 | | (((bfd_get_16 (input_bfd, hit_data) & 0xf) << 16))); | |
07d6d2b8 | 1010 | |
db75b8f7 AM |
1011 | Rvalue1 = (Rvalue1 ^ 0x80000) - 0x80000; |
1012 | Rvalue += Rvalue1; | |
07d6d2b8 | 1013 | |
db75b8f7 AM |
1014 | /* Check for range. */ |
1015 | if (Rvalue > 0xfffff) | |
1016 | return bfd_reloc_overflow; | |
07d6d2b8 | 1017 | |
db75b8f7 AM |
1018 | bfd_put_16 (input_bfd, ((bfd_get_16 (input_bfd, hit_data) & 0xfff0) |
1019 | | ((Rvalue >> 16) & 0xf)), hit_data); | |
1020 | bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); | |
1021 | } | |
1022 | else if (r_type == R_CR16_GOT_REGREL20) | |
1023 | { | |
1024 | asection *sgot = elf_hash_table (info)->sgot; | |
1025 | bfd_vma off; | |
1026 | ||
1027 | if (h != NULL) | |
1028 | { | |
1029 | off = h->got.offset; | |
1030 | BFD_ASSERT (off != (bfd_vma) -1); | |
1031 | ||
1032 | if (! elf_hash_table (info)->dynamic_sections_created | |
1033 | || SYMBOL_REFERENCES_LOCAL (info, h)) | |
1034 | /* This is actually a static link, or it is a | |
1035 | -Bsymbolic link and the symbol is defined | |
1036 | locally, or the symbol was forced to be local | |
1037 | because of a version file. We must initialize | |
1038 | this entry in the global offset table. | |
1039 | When doing a dynamic link, we create a .rela.got | |
1040 | relocation entry to initialize the value. This | |
1041 | is done in the finish_dynamic_symbol routine. */ | |
1042 | bfd_put_32 (output_bfd, Rvalue, sgot->contents + off); | |
1043 | } | |
1044 | else | |
1045 | { | |
1046 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1047 | bfd_put_32 (output_bfd, Rvalue, sgot->contents + off); | |
1048 | } | |
1049 | ||
1050 | Rvalue = sgot->output_offset + off; | |
1051 | Rvalue += addend; | |
1052 | ||
1053 | /* REVISIT: if ((long) Rvalue > 0xffffff || | |
1054 | (long) Rvalue < -0x800000). */ | |
1055 | if (Rvalue > 0xffffff) | |
1056 | return bfd_reloc_overflow; | |
07d6d2b8 | 1057 | |
07d6d2b8 | 1058 | |
db75b8f7 AM |
1059 | bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data)) |
1060 | | (((Rvalue >> 16) & 0xf) << 8), hit_data); | |
1061 | bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); | |
07d6d2b8 | 1062 | |
db75b8f7 AM |
1063 | } |
1064 | else if (r_type == R_CR16_GOTC_REGREL20) | |
1065 | { | |
1066 | asection *sgot = elf_hash_table (info)->sgot; | |
1067 | bfd_vma off; | |
1068 | ||
1069 | if (h != NULL) | |
1070 | { | |
1071 | off = h->got.offset; | |
1072 | BFD_ASSERT (off != (bfd_vma) -1); | |
1073 | ||
1074 | Rvalue >>= 1; /* For code symbols. */ | |
1075 | ||
1076 | if (! elf_hash_table (info)->dynamic_sections_created | |
1077 | || SYMBOL_REFERENCES_LOCAL (info, h)) | |
1078 | /* This is actually a static link, or it is a | |
1079 | -Bsymbolic link and the symbol is defined | |
1080 | locally, or the symbol was forced to be local | |
1081 | because of a version file. We must initialize | |
1082 | this entry in the global offset table. | |
1083 | When doing a dynamic link, we create a .rela.got | |
1084 | relocation entry to initialize the value. This | |
1085 | is done in the finish_dynamic_symbol routine. */ | |
1086 | bfd_put_32 (output_bfd, Rvalue, sgot->contents + off); | |
1087 | } | |
1088 | else | |
1089 | { | |
1090 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1091 | Rvalue >>= 1; | |
1092 | bfd_put_32 (output_bfd, Rvalue, sgot->contents + off); | |
1093 | } | |
07d6d2b8 | 1094 | |
db75b8f7 AM |
1095 | Rvalue = sgot->output_offset + off; |
1096 | Rvalue += addend; | |
07d6d2b8 | 1097 | |
db75b8f7 AM |
1098 | /* Check if any value in DISP. */ |
1099 | Rvalue1 = bfd_get_32 (input_bfd, hit_data); | |
1100 | Rvalue1 = ((Rvalue1 >> 16) | ((Rvalue1 & 0xfff) >> 8 << 16)); | |
07d6d2b8 | 1101 | |
db75b8f7 AM |
1102 | Rvalue1 = (Rvalue1 ^ 0x80000) - 0x80000; |
1103 | Rvalue += Rvalue1; | |
07d6d2b8 | 1104 | |
db75b8f7 AM |
1105 | /* Check for range. */ |
1106 | /* REVISIT: if ((long) Rvalue > 0xffffff | |
1107 | || (long) Rvalue < -0x800000). */ | |
1108 | if (Rvalue > 0xffffff) | |
1109 | return bfd_reloc_overflow; | |
07d6d2b8 | 1110 | |
db75b8f7 AM |
1111 | bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data)) |
1112 | | (((Rvalue >> 16) & 0xf) << 8), hit_data); | |
1113 | bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); | |
1114 | } | |
1115 | else | |
1116 | { | |
1117 | if (r_type == R_CR16_ABS24) | |
1118 | { | |
1119 | Rvalue1 = bfd_get_32 (input_bfd, hit_data); | |
1120 | Rvalue1 = ((Rvalue1 >> 16) | |
1121 | | ((Rvalue1 & 0xfff) >> 8 << 16) | |
1122 | | ((Rvalue1 & 0xf) << 20)); | |
07d6d2b8 | 1123 | |
db75b8f7 AM |
1124 | Rvalue1 = (Rvalue1 ^ 0x800000) - 0x800000; |
1125 | Rvalue += Rvalue1; | |
07d6d2b8 | 1126 | |
db75b8f7 AM |
1127 | /* Check for Range. */ |
1128 | if (Rvalue > 0xffffff) | |
1129 | return bfd_reloc_overflow; | |
07d6d2b8 | 1130 | |
db75b8f7 AM |
1131 | Rvalue = ((((Rvalue >> 20) & 0xf) | (((Rvalue >> 16) & 0xf)<<8) |
1132 | | (bfd_get_32 (input_bfd, hit_data) & 0xf0f0)) | |
1133 | | ((Rvalue & 0xffff) << 16)); | |
1134 | } | |
1135 | else if (r_type == R_CR16_DISP24) | |
1136 | { | |
1137 | Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8) | |
1138 | | (bfd_get_16 (input_bfd, hit_data))) | |
1139 | | (((Rvalue & 0xfffe) | ((Rvalue >> 24) & 0x1)) << 16)); | |
1140 | } | |
1141 | else if ((r_type == R_CR16_IMM32) || (r_type == R_CR16_IMM32a)) | |
1142 | { | |
1143 | Rvalue1 = bfd_get_32 (input_bfd, hit_data); | |
1144 | Rvalue1 = (((Rvalue1 >> 16) & 0xffff) | |
1145 | | ((Rvalue1 & 0xffff) << 16)); | |
07d6d2b8 | 1146 | |
db75b8f7 AM |
1147 | Rvalue1 = (Rvalue1 ^ 0x80000000) - 0x80000000; |
1148 | Rvalue += Rvalue1; | |
07d6d2b8 | 1149 | |
db75b8f7 AM |
1150 | /* Check for range. */ |
1151 | if (Rvalue > 0xffffffff) | |
1152 | return bfd_reloc_overflow; | |
07d6d2b8 | 1153 | |
db75b8f7 AM |
1154 | Rvalue = (((Rvalue >> 16) & 0xffff) | (Rvalue & 0xffff) << 16); |
1155 | } | |
1156 | else if (r_type == R_CR16_DISP24a) | |
1157 | { | |
1158 | Rvalue = (((Rvalue & 0xfffffe) | (Rvalue >> 23))); | |
1159 | Rvalue = (((Rvalue >> 16) & 0xff) | ((Rvalue & 0xffff) << 16) | |
1160 | | bfd_get_32 (input_bfd, hit_data)); | |
1161 | } | |
1162 | else if ((r_type == R_CR16_REGREL20) | |
1163 | || (r_type == R_CR16_REGREL20a)) | |
1164 | { | |
1165 | Rvalue1 = bfd_get_32 (input_bfd, hit_data); | |
1166 | Rvalue1 = (((Rvalue1 >> 16) & 0xffff) | |
1167 | | ((Rvalue1 & 0xfff) >> 8 << 16)); | |
07d6d2b8 | 1168 | |
db75b8f7 AM |
1169 | Rvalue1 = (Rvalue1 ^ 0x80000) - 0x80000; |
1170 | Rvalue += Rvalue1; | |
07d6d2b8 AM |
1171 | |
1172 | /* Check for range. */ | |
db75b8f7 AM |
1173 | if (Rvalue > 0xfffff) |
1174 | return bfd_reloc_overflow; | |
1175 | ||
1176 | Rvalue = (((((Rvalue >> 20) & 0xf) | (((Rvalue >> 16) & 0xf) << 8) | |
1177 | | ((Rvalue & 0xffff) << 16))) | |
1178 | | (bfd_get_32 (input_bfd, hit_data) & 0xf0ff)); | |
1179 | ||
1180 | } | |
1181 | else if (r_type == R_CR16_NUM32) | |
1182 | { | |
1183 | Rvalue1 = (bfd_get_32 (input_bfd, hit_data)); | |
1184 | ||
1185 | Rvalue1 = (Rvalue1 ^ 0x80000000) - 0x80000000; | |
1186 | Rvalue += Rvalue1; | |
1187 | ||
1188 | /* Check for Range. */ | |
1189 | if (Rvalue > 0xffffffff) | |
1190 | return bfd_reloc_overflow; | |
1191 | } | |
1192 | ||
1193 | bfd_put_32 (input_bfd, Rvalue, hit_data); | |
1194 | } | |
1195 | break; | |
1196 | ||
1197 | default: | |
1198 | return bfd_reloc_notsupported; | |
3d3d428f NC |
1199 | } |
1200 | ||
1201 | return bfd_reloc_ok; | |
1202 | } | |
1203 | ||
1204 | /* Delete some bytes from a section while relaxing. */ | |
1205 | ||
0a1b45a2 | 1206 | static bool |
3d3d428f | 1207 | elf32_cr16_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, |
07d6d2b8 | 1208 | asection *sec, bfd_vma addr, int count) |
3d3d428f NC |
1209 | { |
1210 | Elf_Internal_Shdr *symtab_hdr; | |
1211 | unsigned int sec_shndx; | |
1212 | bfd_byte *contents; | |
1213 | Elf_Internal_Rela *irel, *irelend; | |
3d3d428f NC |
1214 | bfd_vma toaddr; |
1215 | Elf_Internal_Sym *isym; | |
1216 | Elf_Internal_Sym *isymend; | |
1217 | struct elf_link_hash_entry **sym_hashes; | |
1218 | struct elf_link_hash_entry **end_hashes; | |
1219 | struct elf_link_hash_entry **start_hashes; | |
1220 | unsigned int symcount; | |
1221 | ||
1222 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1223 | ||
1224 | contents = elf_section_data (sec)->this_hdr.contents; | |
1225 | ||
3d3d428f NC |
1226 | toaddr = sec->size; |
1227 | ||
1228 | irel = elf_section_data (sec)->relocs; | |
1229 | irelend = irel + sec->reloc_count; | |
1230 | ||
1231 | /* Actually delete the bytes. */ | |
1232 | memmove (contents + addr, contents + addr + count, | |
07d6d2b8 | 1233 | (size_t) (toaddr - addr - count)); |
3d3d428f NC |
1234 | sec->size -= count; |
1235 | ||
1236 | /* Adjust all the relocs. */ | |
1237 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1238 | /* Get the new reloc address. */ | |
1239 | if ((irel->r_offset > addr && irel->r_offset < toaddr)) | |
db75b8f7 | 1240 | irel->r_offset -= count; |
3d3d428f NC |
1241 | |
1242 | /* Adjust the local symbols defined in this section. */ | |
1243 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1244 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1245 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
1246 | { | |
1247 | if (isym->st_shndx == sec_shndx | |
07d6d2b8 AM |
1248 | && isym->st_value > addr |
1249 | && isym->st_value < toaddr) | |
1250 | { | |
1251 | /* Adjust the addend of SWITCH relocations in this section, | |
1252 | which reference this local symbol. */ | |
99706f30 | 1253 | #if 0 |
07d6d2b8 AM |
1254 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
1255 | { | |
1256 | unsigned long r_symndx; | |
1257 | Elf_Internal_Sym *rsym; | |
1258 | bfd_vma addsym, subsym; | |
1259 | ||
1260 | /* Skip if not a SWITCH relocation. */ | |
1261 | if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH8 | |
1262 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH16 | |
1263 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH32) | |
db75b8f7 | 1264 | continue; |
07d6d2b8 AM |
1265 | |
1266 | r_symndx = ELF32_R_SYM (irel->r_info); | |
1267 | rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx; | |
1268 | ||
1269 | /* Skip if not the local adjusted symbol. */ | |
1270 | if (rsym != isym) | |
1271 | continue; | |
1272 | ||
1273 | addsym = isym->st_value; | |
1274 | subsym = addsym - irel->r_addend; | |
1275 | ||
1276 | /* Fix the addend only when -->> (addsym > addr >= subsym). */ | |
1277 | if (subsym <= addr) | |
1278 | irel->r_addend -= count; | |
1279 | else | |
1280 | continue; | |
1281 | } | |
99706f30 | 1282 | #endif |
3d3d428f | 1283 | |
07d6d2b8 AM |
1284 | isym->st_value -= count; |
1285 | } | |
3d3d428f NC |
1286 | } |
1287 | ||
1288 | /* Now adjust the global symbols defined in this section. */ | |
1289 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
db75b8f7 | 1290 | - symtab_hdr->sh_info); |
3d3d428f NC |
1291 | sym_hashes = start_hashes = elf_sym_hashes (abfd); |
1292 | end_hashes = sym_hashes + symcount; | |
1293 | ||
1294 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1295 | { | |
1296 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1297 | ||
1298 | /* The '--wrap SYMBOL' option is causing a pain when the object file, | |
07d6d2b8 AM |
1299 | containing the definition of __wrap_SYMBOL, includes a direct |
1300 | call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference | |
1301 | the same symbol (which is __wrap_SYMBOL), but still exist as two | |
1302 | different symbols in 'sym_hashes', we don't want to adjust | |
1303 | the global symbol __wrap_SYMBOL twice. | |
1304 | This check is only relevant when symbols are being wrapped. */ | |
3d3d428f | 1305 | if (link_info->wrap_hash != NULL) |
07d6d2b8 AM |
1306 | { |
1307 | struct elf_link_hash_entry **cur_sym_hashes; | |
1308 | ||
1309 | /* Loop only over the symbols whom been already checked. */ | |
1310 | for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes; | |
1311 | cur_sym_hashes++) | |
1312 | /* If the current symbol is identical to 'sym_hash', that means | |
1313 | the symbol was already adjusted (or at least checked). */ | |
1314 | if (*cur_sym_hashes == sym_hash) | |
1315 | break; | |
1316 | ||
1317 | /* Don't adjust the symbol again. */ | |
1318 | if (cur_sym_hashes < sym_hashes) | |
1319 | continue; | |
1320 | } | |
3d3d428f NC |
1321 | |
1322 | if ((sym_hash->root.type == bfd_link_hash_defined | |
db75b8f7 | 1323 | || sym_hash->root.type == bfd_link_hash_defweak) |
07d6d2b8 AM |
1324 | && sym_hash->root.u.def.section == sec |
1325 | && sym_hash->root.u.def.value > addr | |
1326 | && sym_hash->root.u.def.value < toaddr) | |
1327 | sym_hash->root.u.def.value -= count; | |
3d3d428f NC |
1328 | } |
1329 | ||
0a1b45a2 | 1330 | return true; |
3d3d428f NC |
1331 | } |
1332 | ||
1333 | /* Relocate a CR16 ELF section. */ | |
1334 | ||
0f684201 | 1335 | static int |
3d3d428f | 1336 | elf32_cr16_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
07d6d2b8 AM |
1337 | bfd *input_bfd, asection *input_section, |
1338 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
1339 | Elf_Internal_Sym *local_syms, | |
1340 | asection **local_sections) | |
3d3d428f NC |
1341 | { |
1342 | Elf_Internal_Shdr *symtab_hdr; | |
1343 | struct elf_link_hash_entry **sym_hashes; | |
1344 | Elf_Internal_Rela *rel, *relend; | |
1345 | ||
3d3d428f NC |
1346 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1347 | sym_hashes = elf_sym_hashes (input_bfd); | |
1348 | ||
1349 | rel = relocs; | |
1350 | relend = relocs + input_section->reloc_count; | |
1351 | for (; rel < relend; rel++) | |
1352 | { | |
1353 | int r_type; | |
1354 | reloc_howto_type *howto; | |
1355 | unsigned long r_symndx; | |
1356 | Elf_Internal_Sym *sym; | |
1357 | asection *sec; | |
1358 | struct elf_link_hash_entry *h; | |
1359 | bfd_vma relocation; | |
1360 | bfd_reloc_status_type r; | |
1361 | ||
1362 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1363 | r_type = ELF32_R_TYPE (rel->r_info); | |
1364 | howto = cr16_elf_howto_table + (r_type); | |
1365 | ||
1366 | h = NULL; | |
1367 | sym = NULL; | |
1368 | sec = NULL; | |
1369 | if (r_symndx < symtab_hdr->sh_info) | |
07d6d2b8 AM |
1370 | { |
1371 | sym = local_syms + r_symndx; | |
1372 | sec = local_sections[r_symndx]; | |
1373 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
1374 | } | |
3d3d428f | 1375 | else |
07d6d2b8 | 1376 | { |
0a1b45a2 | 1377 | bool unresolved_reloc, warned, ignored; |
3d3d428f | 1378 | |
07d6d2b8 AM |
1379 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1380 | r_symndx, symtab_hdr, sym_hashes, | |
1381 | h, sec, relocation, | |
1382 | unresolved_reloc, warned, ignored); | |
1383 | } | |
3d3d428f | 1384 | |
dbaa2011 | 1385 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1386 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1387 | rel, 1, relend, howto, 0, contents); |
1004c3e1 | 1388 | |
0e1862bb | 1389 | if (bfd_link_relocatable (info)) |
07d6d2b8 | 1390 | continue; |
1004c3e1 | 1391 | |
3d3d428f | 1392 | r = cr16_elf_final_link_relocate (howto, input_bfd, output_bfd, |
07d6d2b8 AM |
1393 | input_section, |
1394 | contents, rel->r_offset, | |
1395 | relocation, rel->r_addend, | |
1396 | (struct elf_link_hash_entry *) h, | |
1397 | r_symndx, | |
1398 | info, sec, h == NULL); | |
3d3d428f NC |
1399 | |
1400 | if (r != bfd_reloc_ok) | |
07d6d2b8 AM |
1401 | { |
1402 | const char *name; | |
1403 | const char *msg = NULL; | |
1404 | ||
1405 | if (h != NULL) | |
1406 | name = h->root.root.string; | |
1407 | else | |
1408 | { | |
1409 | name = (bfd_elf_string_from_elf_section | |
1410 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1411 | if (name == NULL || *name == '\0') | |
fd361982 | 1412 | name = bfd_section_name (sec); |
07d6d2b8 AM |
1413 | } |
1414 | ||
1415 | switch (r) | |
1416 | { | |
db75b8f7 AM |
1417 | case bfd_reloc_overflow: |
1418 | (*info->callbacks->reloc_overflow) | |
1419 | (info, (h ? &h->root : NULL), name, howto->name, | |
1420 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
1421 | break; | |
1422 | ||
1423 | case bfd_reloc_undefined: | |
1424 | (*info->callbacks->undefined_symbol) | |
0a1b45a2 | 1425 | (info, name, input_bfd, input_section, rel->r_offset, true); |
db75b8f7 AM |
1426 | break; |
1427 | ||
1428 | case bfd_reloc_outofrange: | |
1429 | msg = _("internal error: out of range error"); | |
1430 | goto common_error; | |
1431 | ||
1432 | case bfd_reloc_notsupported: | |
1433 | msg = _("internal error: unsupported relocation error"); | |
1434 | goto common_error; | |
1435 | ||
1436 | case bfd_reloc_dangerous: | |
1437 | msg = _("internal error: dangerous error"); | |
1438 | goto common_error; | |
1439 | ||
1440 | default: | |
1441 | msg = _("internal error: unknown error"); | |
1442 | /* Fall through. */ | |
1443 | ||
1444 | common_error: | |
1445 | (*info->callbacks->warning) (info, msg, name, input_bfd, | |
1446 | input_section, rel->r_offset); | |
1447 | break; | |
07d6d2b8 AM |
1448 | } |
1449 | } | |
3d3d428f NC |
1450 | } |
1451 | ||
0a1b45a2 | 1452 | return true; |
3d3d428f NC |
1453 | } |
1454 | ||
1455 | /* This is a version of bfd_generic_get_relocated_section_contents | |
1456 | which uses elf32_cr16_relocate_section. */ | |
1457 | ||
1458 | static bfd_byte * | |
1459 | elf32_cr16_get_relocated_section_contents (bfd *output_bfd, | |
07d6d2b8 AM |
1460 | struct bfd_link_info *link_info, |
1461 | struct bfd_link_order *link_order, | |
1462 | bfd_byte *data, | |
0a1b45a2 | 1463 | bool relocatable, |
07d6d2b8 | 1464 | asymbol **symbols) |
3d3d428f NC |
1465 | { |
1466 | Elf_Internal_Shdr *symtab_hdr; | |
1467 | asection *input_section = link_order->u.indirect.section; | |
1468 | bfd *input_bfd = input_section->owner; | |
1469 | asection **sections = NULL; | |
1470 | Elf_Internal_Rela *internal_relocs = NULL; | |
1471 | Elf_Internal_Sym *isymbuf = NULL; | |
1472 | ||
1473 | /* We only need to handle the case of relaxing, or of having a | |
1474 | particular set of section contents, specially. */ | |
1475 | if (relocatable | |
1476 | || elf_section_data (input_section)->this_hdr.contents == NULL) | |
1477 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
07d6d2b8 AM |
1478 | link_order, data, |
1479 | relocatable, | |
1480 | symbols); | |
3d3d428f NC |
1481 | |
1482 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1483 | ||
56ba7527 AM |
1484 | bfd_byte *orig_data = data; |
1485 | if (data == NULL) | |
1486 | { | |
1487 | data = bfd_malloc (input_section->size); | |
1488 | if (data == NULL) | |
1489 | return NULL; | |
1490 | } | |
3d3d428f | 1491 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, |
07d6d2b8 | 1492 | (size_t) input_section->size); |
3d3d428f NC |
1493 | |
1494 | if ((input_section->flags & SEC_RELOC) != 0 | |
1495 | && input_section->reloc_count > 0) | |
1496 | { | |
1497 | Elf_Internal_Sym *isym; | |
1498 | Elf_Internal_Sym *isymend; | |
1499 | asection **secpp; | |
1500 | bfd_size_type amt; | |
1501 | ||
1502 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, | |
0a1b45a2 | 1503 | NULL, NULL, false); |
3d3d428f | 1504 | if (internal_relocs == NULL) |
07d6d2b8 | 1505 | goto error_return; |
3d3d428f NC |
1506 | |
1507 | if (symtab_hdr->sh_info != 0) | |
07d6d2b8 AM |
1508 | { |
1509 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1510 | if (isymbuf == NULL) | |
1511 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1512 | symtab_hdr->sh_info, 0, | |
1513 | NULL, NULL, NULL); | |
1514 | if (isymbuf == NULL) | |
1515 | goto error_return; | |
1516 | } | |
3d3d428f NC |
1517 | |
1518 | amt = symtab_hdr->sh_info; | |
1519 | amt *= sizeof (asection *); | |
1520 | sections = bfd_malloc (amt); | |
1521 | if (sections == NULL && amt != 0) | |
07d6d2b8 | 1522 | goto error_return; |
3d3d428f NC |
1523 | |
1524 | isymend = isymbuf + symtab_hdr->sh_info; | |
1525 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
07d6d2b8 AM |
1526 | { |
1527 | asection *isec; | |
3d3d428f | 1528 | |
07d6d2b8 AM |
1529 | if (isym->st_shndx == SHN_UNDEF) |
1530 | isec = bfd_und_section_ptr; | |
1531 | else if (isym->st_shndx == SHN_ABS) | |
1532 | isec = bfd_abs_section_ptr; | |
1533 | else if (isym->st_shndx == SHN_COMMON) | |
1534 | isec = bfd_com_section_ptr; | |
1535 | else | |
1536 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); | |
3d3d428f | 1537 | |
07d6d2b8 AM |
1538 | *secpp = isec; |
1539 | } | |
3d3d428f NC |
1540 | |
1541 | if (! elf32_cr16_relocate_section (output_bfd, link_info, input_bfd, | |
db75b8f7 AM |
1542 | input_section, data, internal_relocs, |
1543 | isymbuf, sections)) | |
07d6d2b8 | 1544 | goto error_return; |
3d3d428f | 1545 | |
c9594989 AM |
1546 | free (sections); |
1547 | if (symtab_hdr->contents != (unsigned char *) isymbuf) | |
07d6d2b8 | 1548 | free (isymbuf); |
3d3d428f | 1549 | if (elf_section_data (input_section)->relocs != internal_relocs) |
07d6d2b8 | 1550 | free (internal_relocs); |
3d3d428f NC |
1551 | } |
1552 | ||
1553 | return data; | |
1554 | ||
1555 | error_return: | |
c9594989 AM |
1556 | free (sections); |
1557 | if (symtab_hdr->contents != (unsigned char *) isymbuf) | |
3d3d428f | 1558 | free (isymbuf); |
c9594989 | 1559 | if (elf_section_data (input_section)->relocs != internal_relocs) |
3d3d428f | 1560 | free (internal_relocs); |
56ba7527 AM |
1561 | if (orig_data == NULL) |
1562 | free (data); | |
3d3d428f NC |
1563 | return NULL; |
1564 | } | |
1565 | ||
99706f30 SR |
1566 | /* Assorted hash table functions. */ |
1567 | ||
1568 | /* Initialize an entry in the link hash table. */ | |
1569 | ||
1570 | /* Create an entry in an CR16 ELF linker hash table. */ | |
1571 | ||
1572 | static struct bfd_hash_entry * | |
1573 | elf32_cr16_link_hash_newfunc (struct bfd_hash_entry *entry, | |
07d6d2b8 AM |
1574 | struct bfd_hash_table *table, |
1575 | const char *string) | |
99706f30 SR |
1576 | { |
1577 | struct elf32_cr16_link_hash_entry *ret = | |
1578 | (struct elf32_cr16_link_hash_entry *) entry; | |
1579 | ||
1580 | /* Allocate the structure if it has not already been allocated by a | |
1581 | subclass. */ | |
1582 | if (ret == (struct elf32_cr16_link_hash_entry *) NULL) | |
1583 | ret = ((struct elf32_cr16_link_hash_entry *) | |
07d6d2b8 AM |
1584 | bfd_hash_allocate (table, |
1585 | sizeof (struct elf32_cr16_link_hash_entry))); | |
99706f30 SR |
1586 | if (ret == (struct elf32_cr16_link_hash_entry *) NULL) |
1587 | return (struct bfd_hash_entry *) ret; | |
1588 | ||
1589 | /* Call the allocation method of the superclass. */ | |
1590 | ret = ((struct elf32_cr16_link_hash_entry *) | |
07d6d2b8 AM |
1591 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
1592 | table, string)); | |
99706f30 SR |
1593 | if (ret != (struct elf32_cr16_link_hash_entry *) NULL) |
1594 | { | |
1595 | ret->direct_calls = 0; | |
1596 | ret->stack_size = 0; | |
1597 | ret->movm_args = 0; | |
1598 | ret->movm_stack_size = 0; | |
1599 | ret->flags = 0; | |
1600 | ret->value = 0; | |
1601 | } | |
1602 | ||
1603 | return (struct bfd_hash_entry *) ret; | |
1604 | } | |
1605 | ||
1606 | /* Create an cr16 ELF linker hash table. */ | |
1607 | ||
1608 | static struct bfd_link_hash_table * | |
1609 | elf32_cr16_link_hash_table_create (bfd *abfd) | |
1610 | { | |
4dfe6ac6 | 1611 | struct elf_link_hash_table *ret; |
986f0783 | 1612 | size_t amt = sizeof (struct elf_link_hash_table); |
99706f30 | 1613 | |
7bf52ea2 | 1614 | ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); |
4dfe6ac6 | 1615 | if (ret == (struct elf_link_hash_table *) NULL) |
99706f30 SR |
1616 | return NULL; |
1617 | ||
4dfe6ac6 | 1618 | if (!_bfd_elf_link_hash_table_init (ret, abfd, |
07d6d2b8 AM |
1619 | elf32_cr16_link_hash_newfunc, |
1620 | sizeof (struct elf32_cr16_link_hash_entry), | |
4dfe6ac6 | 1621 | GENERIC_ELF_DATA)) |
99706f30 SR |
1622 | { |
1623 | free (ret); | |
1624 | return NULL; | |
1625 | } | |
1626 | ||
4dfe6ac6 | 1627 | return &ret->root; |
99706f30 SR |
1628 | } |
1629 | ||
99706f30 SR |
1630 | static unsigned long |
1631 | elf_cr16_mach (flagword flags) | |
1632 | { | |
1633 | switch (flags) | |
1634 | { | |
db75b8f7 AM |
1635 | case EM_CR16: |
1636 | default: | |
99706f30 SR |
1637 | return bfd_mach_cr16; |
1638 | } | |
1639 | } | |
1640 | ||
1641 | /* The final processing done just before writing out a CR16 ELF object | |
1642 | file. This gets the CR16 architecture right based on the machine | |
1643 | number. */ | |
1644 | ||
0a1b45a2 | 1645 | static bool |
cc364be6 | 1646 | _bfd_cr16_elf_final_write_processing (bfd *abfd) |
99706f30 SR |
1647 | { |
1648 | unsigned long val; | |
1649 | switch (bfd_get_mach (abfd)) | |
1650 | { | |
db75b8f7 AM |
1651 | default: |
1652 | case bfd_mach_cr16: | |
1653 | val = EM_CR16; | |
1654 | break; | |
99706f30 | 1655 | } |
cc364be6 AM |
1656 | elf_elfheader (abfd)->e_flags |= val; |
1657 | return _bfd_elf_final_write_processing (abfd); | |
99706f30 SR |
1658 | } |
1659 | ||
1660 | ||
0a1b45a2 | 1661 | static bool |
99706f30 SR |
1662 | _bfd_cr16_elf_object_p (bfd *abfd) |
1663 | { | |
1664 | bfd_default_set_arch_mach (abfd, bfd_arch_cr16, | |
07d6d2b8 | 1665 | elf_cr16_mach (elf_elfheader (abfd)->e_flags)); |
0a1b45a2 | 1666 | return true; |
99706f30 SR |
1667 | } |
1668 | ||
1669 | /* Merge backend specific data from an object file to the output | |
1670 | object file when linking. */ | |
1671 | ||
0a1b45a2 | 1672 | static bool |
50e03d47 | 1673 | _bfd_cr16_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
99706f30 | 1674 | { |
50e03d47 AM |
1675 | bfd *obfd = info->output_bfd; |
1676 | ||
99706f30 SR |
1677 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1678 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
0a1b45a2 | 1679 | return true; |
99706f30 SR |
1680 | |
1681 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1682 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
1683 | { | |
1684 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
07d6d2b8 | 1685 | bfd_get_mach (ibfd))) |
0a1b45a2 | 1686 | return false; |
db75b8f7 | 1687 | } |
99706f30 | 1688 | |
0a1b45a2 | 1689 | return true; |
99706f30 SR |
1690 | } |
1691 | ||
1692 | ||
3d3d428f NC |
1693 | /* This function handles relaxing for the CR16. |
1694 | ||
1695 | There's quite a few relaxing opportunites available on the CR16: | |
1696 | ||
07d6d2b8 AM |
1697 | * bcond:24 -> bcond:16 1 byte |
1698 | * bcond:16 -> bcond:8 1 byte | |
1699 | * arithmetic imm32 -> arithmetic imm20 12 bits | |
1700 | * arithmetic imm20/imm16 -> arithmetic imm4 12/16 bits | |
3d3d428f NC |
1701 | |
1702 | Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */ | |
1703 | ||
0a1b45a2 | 1704 | static bool |
3d3d428f | 1705 | elf32_cr16_relax_section (bfd *abfd, asection *sec, |
0a1b45a2 | 1706 | struct bfd_link_info *link_info, bool *again) |
3d3d428f NC |
1707 | { |
1708 | Elf_Internal_Shdr *symtab_hdr; | |
1709 | Elf_Internal_Rela *internal_relocs; | |
1710 | Elf_Internal_Rela *irel, *irelend; | |
1711 | bfd_byte *contents = NULL; | |
1712 | Elf_Internal_Sym *isymbuf = NULL; | |
1713 | ||
1714 | /* Assume nothing changes. */ | |
0a1b45a2 | 1715 | *again = false; |
3d3d428f NC |
1716 | |
1717 | /* We don't have to do anything for a relocatable link, if | |
1718 | this section does not have relocs, or if this is not a | |
1719 | code section. */ | |
0e1862bb | 1720 | if (bfd_link_relocatable (link_info) |
3d3d428f | 1721 | || sec->reloc_count == 0 |
3a574cce AM |
1722 | || (sec->flags & SEC_RELOC) == 0 |
1723 | || (sec->flags & SEC_HAS_CONTENTS) == 0 | |
3d3d428f | 1724 | || (sec->flags & SEC_CODE) == 0) |
0a1b45a2 | 1725 | return true; |
3d3d428f NC |
1726 | |
1727 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1728 | ||
1729 | /* Get a copy of the native relocations. */ | |
1730 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
07d6d2b8 | 1731 | link_info->keep_memory); |
3d3d428f NC |
1732 | if (internal_relocs == NULL) |
1733 | goto error_return; | |
1734 | ||
1735 | /* Walk through them looking for relaxing opportunities. */ | |
1736 | irelend = internal_relocs + sec->reloc_count; | |
1737 | for (irel = internal_relocs; irel < irelend; irel++) | |
1738 | { | |
1739 | bfd_vma symval; | |
1740 | ||
1741 | /* If this isn't something that can be relaxed, then ignore | |
07d6d2b8 | 1742 | this reloc. */ |
3d3d428f | 1743 | if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP16 |
07d6d2b8 AM |
1744 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP24 |
1745 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM32 | |
1746 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM20 | |
1747 | && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM16) | |
1748 | continue; | |
3d3d428f NC |
1749 | |
1750 | /* Get the section contents if we haven't done so already. */ | |
1751 | if (contents == NULL) | |
07d6d2b8 AM |
1752 | { |
1753 | /* Get cached copy if it exists. */ | |
1754 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1755 | contents = elf_section_data (sec)->this_hdr.contents; | |
1756 | /* Go get them off disk. */ | |
1757 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1758 | goto error_return; | |
1759 | } | |
3d3d428f NC |
1760 | |
1761 | /* Read this BFD's local symbols if we haven't done so already. */ | |
1762 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
07d6d2b8 AM |
1763 | { |
1764 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1765 | if (isymbuf == NULL) | |
1766 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1767 | symtab_hdr->sh_info, 0, | |
1768 | NULL, NULL, NULL); | |
1769 | if (isymbuf == NULL) | |
1770 | goto error_return; | |
1771 | } | |
3d3d428f NC |
1772 | |
1773 | /* Get the value of the symbol referred to by the reloc. */ | |
1774 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
07d6d2b8 AM |
1775 | { |
1776 | /* A local symbol. */ | |
1777 | Elf_Internal_Sym *isym; | |
1778 | asection *sym_sec; | |
1779 | ||
1780 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
1781 | if (isym->st_shndx == SHN_UNDEF) | |
1782 | sym_sec = bfd_und_section_ptr; | |
1783 | else if (isym->st_shndx == SHN_ABS) | |
1784 | sym_sec = bfd_abs_section_ptr; | |
1785 | else if (isym->st_shndx == SHN_COMMON) | |
1786 | sym_sec = bfd_com_section_ptr; | |
1787 | else | |
1788 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
1789 | symval = (isym->st_value | |
1790 | + sym_sec->output_section->vma | |
1791 | + sym_sec->output_offset); | |
1792 | } | |
3d3d428f | 1793 | else |
07d6d2b8 AM |
1794 | { |
1795 | unsigned long indx; | |
1796 | struct elf_link_hash_entry *h; | |
1797 | ||
1798 | /* An external symbol. */ | |
1799 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1800 | h = elf_sym_hashes (abfd)[indx]; | |
1801 | BFD_ASSERT (h != NULL); | |
1802 | ||
1803 | if (h->root.type != bfd_link_hash_defined | |
1804 | && h->root.type != bfd_link_hash_defweak) | |
1805 | /* This appears to be a reference to an undefined | |
1806 | symbol. Just ignore it--it will be caught by the | |
1807 | regular reloc processing. */ | |
1808 | continue; | |
1809 | ||
1810 | symval = (h->root.u.def.value | |
1811 | + h->root.u.def.section->output_section->vma | |
1812 | + h->root.u.def.section->output_offset); | |
1813 | } | |
3d3d428f NC |
1814 | |
1815 | /* For simplicity of coding, we are going to modify the section | |
07d6d2b8 AM |
1816 | contents, the section relocs, and the BFD symbol table. We |
1817 | must tell the rest of the code not to free up this | |
1818 | information. It would be possible to instead create a table | |
1819 | of changes which have to be made, as is done in coff-mips.c; | |
1820 | that would be more work, but would require less memory when | |
1821 | the linker is run. */ | |
3d3d428f NC |
1822 | |
1823 | /* Try to turn a 24 branch/call into a 16bit relative | |
07d6d2b8 | 1824 | branch/call. */ |
3d3d428f | 1825 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP24) |
07d6d2b8 AM |
1826 | { |
1827 | bfd_vma value = symval; | |
1828 | ||
1829 | /* Deal with pc-relative gunk. */ | |
1830 | value -= (sec->output_section->vma + sec->output_offset); | |
1831 | value -= irel->r_offset; | |
1832 | value += irel->r_addend; | |
1833 | ||
1834 | /* See if the value will fit in 16 bits, note the high value is | |
1835 | 0xfffe + 2 as the target will be two bytes closer if we are | |
1836 | able to relax. */ | |
1837 | if ((long) value < 0x10000 && (long) value > -0x10002) | |
1838 | { | |
1839 | unsigned int code; | |
1840 | ||
1841 | /* Get the opcode. */ | |
db75b8f7 AM |
1842 | code = (unsigned int) bfd_get_32 (abfd, |
1843 | contents + irel->r_offset); | |
07d6d2b8 AM |
1844 | |
1845 | /* Verify it's a 'bcond' and fix the opcode. */ | |
1846 | if ((code & 0xffff) == 0x0010) | |
db75b8f7 AM |
1847 | bfd_put_16 (abfd, 0x1800 | ((0xf & (code >> 20)) << 4), |
1848 | contents + irel->r_offset); | |
07d6d2b8 AM |
1849 | else |
1850 | continue; | |
1851 | ||
1852 | /* Note that we've changed the relocs, section contents, etc. */ | |
1853 | elf_section_data (sec)->relocs = internal_relocs; | |
1854 | elf_section_data (sec)->this_hdr.contents = contents; | |
1855 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1856 | ||
1857 | /* Fix the relocation's type. */ | |
1858 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1859 | R_CR16_DISP16); | |
1860 | ||
1861 | /* Delete two bytes of data. */ | |
1862 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
db75b8f7 | 1863 | irel->r_offset + 2, 2)) |
07d6d2b8 AM |
1864 | goto error_return; |
1865 | ||
1866 | /* That will change things, so, we should relax again. | |
1867 | Note that this is not required, and it may be slow. */ | |
0a1b45a2 | 1868 | *again = true; |
07d6d2b8 AM |
1869 | } |
1870 | } | |
3d3d428f | 1871 | |
99706f30 | 1872 | /* Try to turn a 16bit pc-relative branch into an |
07d6d2b8 | 1873 | 8bit pc-relative branch. */ |
3d3d428f | 1874 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP16) |
07d6d2b8 AM |
1875 | { |
1876 | bfd_vma value = symval; | |
1877 | ||
1878 | /* Deal with pc-relative gunk. */ | |
1879 | value -= (sec->output_section->vma + sec->output_offset); | |
1880 | value -= irel->r_offset; | |
1881 | value += irel->r_addend; | |
1882 | ||
1883 | /* See if the value will fit in 8 bits, note the high value is | |
1884 | 0xfc + 2 as the target will be two bytes closer if we are | |
1885 | able to relax. */ | |
1886 | /*if ((long) value < 0x1fa && (long) value > -0x100) REVISIT:range */ | |
1887 | if ((long) value < 0xfa && (long) value > -0x100) | |
1888 | { | |
1889 | unsigned short code; | |
1890 | ||
1891 | /* Get the opcode. */ | |
db75b8f7 | 1892 | code = bfd_get_16 (abfd, contents + irel->r_offset); |
07d6d2b8 AM |
1893 | |
1894 | /* Verify it's a 'bcond' and fix the opcode. */ | |
1895 | if ((code & 0xff0f) == 0x1800) | |
1896 | bfd_put_16 (abfd, (code & 0xf0f0), contents + irel->r_offset); | |
1897 | else | |
1898 | continue; | |
1899 | ||
1900 | /* Note that we've changed the relocs, section contents, etc. */ | |
1901 | elf_section_data (sec)->relocs = internal_relocs; | |
1902 | elf_section_data (sec)->this_hdr.contents = contents; | |
1903 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1904 | ||
1905 | /* Fix the relocation's type. */ | |
1906 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1907 | R_CR16_DISP8); | |
1908 | ||
1909 | /* Delete two bytes of data. */ | |
1910 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
db75b8f7 | 1911 | irel->r_offset + 2, 2)) |
07d6d2b8 AM |
1912 | goto error_return; |
1913 | ||
1914 | /* That will change things, so, we should relax again. | |
1915 | Note that this is not required, and it may be slow. */ | |
0a1b45a2 | 1916 | *again = true; |
07d6d2b8 AM |
1917 | } |
1918 | } | |
3d3d428f | 1919 | |
99706f30 | 1920 | /* Try to turn a 32-bit IMM address into a 20/16-bit IMM address */ |
3d3d428f | 1921 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM32) |
07d6d2b8 AM |
1922 | { |
1923 | bfd_vma value = symval; | |
1924 | unsigned short is_add_mov = 0; | |
1925 | bfd_vma value1 = 0; | |
1926 | ||
1927 | /* Get the existing value from the mcode */ | |
db75b8f7 AM |
1928 | value1 = bfd_get_32 (abfd, contents + irel->r_offset + 2); |
1929 | value1 = (value1 >> 16) | ((value1 & 0xffff) << 16); | |
07d6d2b8 AM |
1930 | |
1931 | /* See if the value will fit in 20 bits. */ | |
1932 | if ((long) (value + value1) < 0xfffff && (long) (value + value1) > 0) | |
1933 | { | |
1934 | unsigned short code; | |
1935 | ||
1936 | /* Get the opcode. */ | |
db75b8f7 | 1937 | code = bfd_get_16 (abfd, contents + irel->r_offset); |
07d6d2b8 AM |
1938 | |
1939 | /* Verify it's a 'arithmetic ADDD or MOVD instruction'. | |
1940 | For ADDD and MOVD only, convert to IMM32 -> IMM20. */ | |
1941 | ||
1942 | if (((code & 0xfff0) == 0x0070) || ((code & 0xfff0) == 0x0020)) | |
db75b8f7 | 1943 | is_add_mov = 1; |
07d6d2b8 AM |
1944 | |
1945 | if (is_add_mov) | |
1946 | { | |
1947 | /* Note that we've changed the relocs, section contents, | |
1948 | etc. */ | |
1949 | elf_section_data (sec)->relocs = internal_relocs; | |
1950 | elf_section_data (sec)->this_hdr.contents = contents; | |
1951 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1952 | ||
1953 | /* Fix the opcode. */ | |
1954 | if ((code & 0xfff0) == 0x0070) /* For movd. */ | |
1955 | bfd_put_8 (abfd, 0x05, contents + irel->r_offset + 1); | |
1956 | else /* code == 0x0020 for addd. */ | |
1957 | bfd_put_8 (abfd, 0x04, contents + irel->r_offset + 1); | |
1958 | ||
1959 | bfd_put_8 (abfd, (code & 0xf) << 4, contents + irel->r_offset); | |
1960 | ||
1961 | /* If existing value is nagavive adjust approriately | |
1962 | place the 16-20bits (ie 4 bit) in new opcode, | |
1963 | as the 0xffffxxxx, the higher 2 byte values removed. */ | |
1964 | if (value1 & 0x80000000) | |
db75b8f7 AM |
1965 | bfd_put_8 (abfd, |
1966 | (0x0f | (bfd_get_8 (abfd, | |
1967 | contents + irel->r_offset))), | |
1968 | contents + irel->r_offset); | |
07d6d2b8 | 1969 | else |
db75b8f7 AM |
1970 | bfd_put_8 (abfd, |
1971 | (((value1 >> 16) & 0xf) | |
1972 | | (bfd_get_8 (abfd, | |
1973 | contents + irel->r_offset))), | |
1974 | contents + irel->r_offset); | |
07d6d2b8 AM |
1975 | |
1976 | /* Fix the relocation's type. */ | |
1977 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1978 | R_CR16_IMM20); | |
1979 | ||
1980 | /* Delete two bytes of data. */ | |
1981 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
1982 | irel->r_offset + 2, 2)) | |
1983 | goto error_return; | |
1984 | ||
1985 | /* That will change things, so, we should relax again. | |
1986 | Note that this is not required, and it may be slow. */ | |
0a1b45a2 | 1987 | *again = true; |
07d6d2b8 AM |
1988 | } |
1989 | } | |
1990 | ||
1991 | /* See if the value will fit in 16 bits. */ | |
1992 | if ((!is_add_mov) | |
1993 | && ((long)(value + value1) < 0x7fff && (long)(value + value1) > 0)) | |
1994 | { | |
1995 | unsigned short code; | |
1996 | ||
1997 | /* Get the opcode. */ | |
db75b8f7 | 1998 | code = bfd_get_16 (abfd, contents + irel->r_offset); |
07d6d2b8 AM |
1999 | |
2000 | /* Note that we've changed the relocs, section contents, etc. */ | |
2001 | elf_section_data (sec)->relocs = internal_relocs; | |
2002 | elf_section_data (sec)->this_hdr.contents = contents; | |
2003 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2004 | ||
2005 | /* Fix the opcode. */ | |
2006 | if ((code & 0xf0) == 0x70) /* For movd. */ | |
2007 | bfd_put_8 (abfd, 0x54, contents + irel->r_offset + 1); | |
2008 | else if ((code & 0xf0) == 0x20) /* For addd. */ | |
2009 | bfd_put_8 (abfd, 0x60, contents + irel->r_offset + 1); | |
2010 | else if ((code & 0xf0) == 0x90) /* For cmpd. */ | |
2011 | bfd_put_8 (abfd, 0x56, contents + irel->r_offset + 1); | |
2012 | else | |
2013 | continue; | |
2014 | ||
2015 | bfd_put_8 (abfd, 0xb0 | (code & 0xf), contents + irel->r_offset); | |
2016 | ||
2017 | /* If existing value is nagavive adjust approriately | |
2018 | place the 12-16bits (ie 4 bit) in new opcode, | |
2019 | as the 0xfffffxxx, the higher 2 byte values removed. */ | |
2020 | if (value1 & 0x80000000) | |
db75b8f7 AM |
2021 | bfd_put_8 (abfd, |
2022 | (0x0f | (bfd_get_8 (abfd, | |
2023 | contents + irel->r_offset))), | |
2024 | contents + irel->r_offset); | |
07d6d2b8 AM |
2025 | else |
2026 | bfd_put_16 (abfd, value1, contents + irel->r_offset + 2); | |
2027 | ||
2028 | ||
2029 | /* Fix the relocation's type. */ | |
2030 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2031 | R_CR16_IMM16); | |
2032 | ||
2033 | /* Delete two bytes of data. */ | |
2034 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
2035 | irel->r_offset + 2, 2)) | |
2036 | goto error_return; | |
2037 | ||
2038 | /* That will change things, so, we should relax again. | |
2039 | Note that this is not required, and it may be slow. */ | |
0a1b45a2 | 2040 | *again = true; |
07d6d2b8 AM |
2041 | } |
2042 | } | |
7fac7ff4 | 2043 | |
99706f30 SR |
2044 | #if 0 |
2045 | /* Try to turn a 16bit immediate address into a 4bit | |
07d6d2b8 | 2046 | immediate address. */ |
68ffbac6 | 2047 | if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20) |
07d6d2b8 AM |
2048 | || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM16)) |
2049 | { | |
2050 | bfd_vma value = symval; | |
2051 | bfd_vma value1 = 0; | |
2052 | ||
2053 | /* Get the existing value from the mcode */ | |
2054 | value1 = ((bfd_get_16 (abfd, contents + irel->r_offset + 2) & 0xffff)); | |
2055 | ||
2056 | if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20) | |
2057 | { | |
db75b8f7 AM |
2058 | value1 |= ((bfd_get_16 (abfd, contents + irel->r_offset + 1) |
2059 | & 0xf000) << 0x4); | |
07d6d2b8 AM |
2060 | } |
2061 | ||
2062 | /* See if the value will fit in 4 bits. */ | |
2063 | if ((((long) (value + value1)) < 0xf) | |
2064 | && (((long) (value + value1)) > 0)) | |
2065 | { | |
2066 | unsigned short code; | |
2067 | ||
2068 | /* Get the opcode. */ | |
db75b8f7 | 2069 | code = bfd_get_16 (abfd, contents + irel->r_offset); |
07d6d2b8 AM |
2070 | |
2071 | /* Note that we've changed the relocs, section contents, etc. */ | |
2072 | elf_section_data (sec)->relocs = internal_relocs; | |
2073 | elf_section_data (sec)->this_hdr.contents = contents; | |
2074 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2075 | ||
2076 | /* Fix the opcode. */ | |
2077 | if (((code & 0x0f00) == 0x0400) || ((code & 0x0f00) == 0x0500)) | |
2078 | { | |
2079 | if ((code & 0x0f00) == 0x0400) /* For movd imm20. */ | |
2080 | bfd_put_8 (abfd, 0x60, contents + irel->r_offset); | |
2081 | else /* For addd imm20. */ | |
2082 | bfd_put_8 (abfd, 0x54, contents + irel->r_offset); | |
db75b8f7 AM |
2083 | bfd_put_8 (abfd, (code & 0xf0) >> 4, |
2084 | contents + irel->r_offset + 1); | |
07d6d2b8 AM |
2085 | } |
2086 | else | |
2087 | { | |
2088 | if ((code & 0xfff0) == 0x56b0) /* For cmpd imm16. */ | |
2089 | bfd_put_8 (abfd, 0x56, contents + irel->r_offset); | |
2090 | else if ((code & 0xfff0) == 0x54b0) /* For movd imm16. */ | |
2091 | bfd_put_8 (abfd, 0x54, contents + irel->r_offset); | |
2092 | else if ((code & 0xfff0) == 0x58b0) /* For movb imm16. */ | |
2093 | bfd_put_8 (abfd, 0x58, contents + irel->r_offset); | |
2094 | else if ((code & 0xfff0) == 0x5Ab0) /* For movw imm16. */ | |
2095 | bfd_put_8 (abfd, 0x5A, contents + irel->r_offset); | |
2096 | else if ((code & 0xfff0) == 0x60b0) /* For addd imm16. */ | |
2097 | bfd_put_8 (abfd, 0x60, contents + irel->r_offset); | |
2098 | else if ((code & 0xfff0) == 0x30b0) /* For addb imm16. */ | |
2099 | bfd_put_8 (abfd, 0x30, contents + irel->r_offset); | |
2100 | else if ((code & 0xfff0) == 0x2Cb0) /* For addub imm16. */ | |
2101 | bfd_put_8 (abfd, 0x2C, contents + irel->r_offset); | |
2102 | else if ((code & 0xfff0) == 0x32b0) /* For adduw imm16. */ | |
2103 | bfd_put_8 (abfd, 0x32, contents + irel->r_offset); | |
2104 | else if ((code & 0xfff0) == 0x38b0) /* For subb imm16. */ | |
2105 | bfd_put_8 (abfd, 0x38, contents + irel->r_offset); | |
2106 | else if ((code & 0xfff0) == 0x3Cb0) /* For subcb imm16. */ | |
2107 | bfd_put_8 (abfd, 0x3C, contents + irel->r_offset); | |
2108 | else if ((code & 0xfff0) == 0x3Fb0) /* For subcw imm16. */ | |
2109 | bfd_put_8 (abfd, 0x3F, contents + irel->r_offset); | |
2110 | else if ((code & 0xfff0) == 0x3Ab0) /* For subw imm16. */ | |
2111 | bfd_put_8 (abfd, 0x3A, contents + irel->r_offset); | |
2112 | else if ((code & 0xfff0) == 0x50b0) /* For cmpb imm16. */ | |
2113 | bfd_put_8 (abfd, 0x50, contents + irel->r_offset); | |
2114 | else if ((code & 0xfff0) == 0x52b0) /* For cmpw imm16. */ | |
2115 | bfd_put_8 (abfd, 0x52, contents + irel->r_offset); | |
2116 | else | |
2117 | continue; | |
2118 | ||
2119 | bfd_put_8 (abfd, (code & 0xf), contents + irel->r_offset + 1); | |
2120 | } | |
2121 | ||
2122 | /* Fix the relocation's type. */ | |
2123 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2124 | R_CR16_IMM4); | |
2125 | ||
2126 | /* Delete two bytes of data. */ | |
2127 | if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, | |
2128 | irel->r_offset + 2, 2)) | |
2129 | goto error_return; | |
2130 | ||
2131 | /* That will change things, so, we should relax again. | |
2132 | Note that this is not required, and it may be slow. */ | |
0a1b45a2 | 2133 | *again = true; |
07d6d2b8 AM |
2134 | } |
2135 | } | |
99706f30 | 2136 | #endif |
3d3d428f NC |
2137 | } |
2138 | ||
2139 | if (isymbuf != NULL | |
2140 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2141 | { | |
2142 | if (! link_info->keep_memory) | |
07d6d2b8 | 2143 | free (isymbuf); |
3d3d428f | 2144 | else |
db75b8f7 AM |
2145 | /* Cache the symbols for elf_link_input_bfd. */ |
2146 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
3d3d428f NC |
2147 | } |
2148 | ||
2149 | if (contents != NULL | |
2150 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2151 | { | |
2152 | if (! link_info->keep_memory) | |
07d6d2b8 | 2153 | free (contents); |
3d3d428f | 2154 | else |
db75b8f7 AM |
2155 | /* Cache the section contents for elf_link_input_bfd. */ |
2156 | elf_section_data (sec)->this_hdr.contents = contents; | |
68ffbac6 | 2157 | |
3d3d428f NC |
2158 | } |
2159 | ||
c9594989 | 2160 | if (elf_section_data (sec)->relocs != internal_relocs) |
3d3d428f NC |
2161 | free (internal_relocs); |
2162 | ||
0a1b45a2 | 2163 | return true; |
3d3d428f NC |
2164 | |
2165 | error_return: | |
c9594989 | 2166 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
3d3d428f | 2167 | free (isymbuf); |
c9594989 | 2168 | if (elf_section_data (sec)->this_hdr.contents != contents) |
3d3d428f | 2169 | free (contents); |
c9594989 | 2170 | if (elf_section_data (sec)->relocs != internal_relocs) |
3d3d428f NC |
2171 | free (internal_relocs); |
2172 | ||
0a1b45a2 | 2173 | return false; |
3d3d428f NC |
2174 | } |
2175 | ||
2176 | static asection * | |
2177 | elf32_cr16_gc_mark_hook (asection *sec, | |
07d6d2b8 AM |
2178 | struct bfd_link_info *info, |
2179 | Elf_Internal_Rela *rel, | |
2180 | struct elf_link_hash_entry *h, | |
2181 | Elf_Internal_Sym *sym) | |
3d3d428f | 2182 | { |
fb34365b | 2183 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
3d3d428f NC |
2184 | } |
2185 | ||
99706f30 SR |
2186 | /* Create dynamic sections when linking against a dynamic object. */ |
2187 | ||
0a1b45a2 | 2188 | static bool |
99706f30 SR |
2189 | _bfd_cr16_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
2190 | { | |
2191 | flagword flags; | |
2192 | asection * s; | |
2193 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); | |
ce558b89 | 2194 | struct elf_link_hash_table *htab = elf_hash_table (info); |
99706f30 SR |
2195 | int ptralign = 0; |
2196 | ||
2197 | switch (bed->s->arch_size) | |
2198 | { | |
2199 | case 16: | |
2200 | ptralign = 1; | |
2201 | break; | |
2202 | ||
2203 | case 32: | |
2204 | ptralign = 2; | |
2205 | break; | |
2206 | ||
2207 | default: | |
2208 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 2209 | return false; |
99706f30 SR |
2210 | } |
2211 | ||
2212 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
2213 | .rel[a].bss sections. */ | |
2214 | ||
2215 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
07d6d2b8 | 2216 | | SEC_LINKER_CREATED); |
99706f30 | 2217 | |
3d4d4302 AM |
2218 | s = bfd_make_section_anyway_with_flags (abfd, |
2219 | (bed->default_use_rela_p | |
2220 | ? ".rela.plt" : ".rel.plt"), | |
2221 | flags | SEC_READONLY); | |
ce558b89 | 2222 | htab->srelplt = s; |
99706f30 | 2223 | if (s == NULL |
fd361982 | 2224 | || !bfd_set_section_alignment (s, ptralign)) |
0a1b45a2 | 2225 | return false; |
99706f30 SR |
2226 | |
2227 | if (! _bfd_cr16_elf_create_got_section (abfd, info)) | |
0a1b45a2 | 2228 | return false; |
99706f30 | 2229 | |
99706f30 SR |
2230 | if (bed->want_dynbss) |
2231 | { | |
2232 | /* The .dynbss section is a place to put symbols which are defined | |
07d6d2b8 AM |
2233 | by dynamic objects, are referenced by regular objects, and are |
2234 | not functions. We must allocate space for them in the process | |
2235 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
2236 | initialize them at run time. The linker script puts the .dynbss | |
2237 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
2238 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
2239 | SEC_ALLOC | SEC_LINKER_CREATED); | |
99706f30 | 2240 | if (s == NULL) |
0a1b45a2 | 2241 | return false; |
99706f30 SR |
2242 | |
2243 | /* The .rel[a].bss section holds copy relocs. This section is not | |
07d6d2b8 AM |
2244 | normally needed. We need to create it here, though, so that the |
2245 | linker will map it to an output section. We can't just create it | |
2246 | only if we need it, because we will not know whether we need it | |
2247 | until we have seen all the input files, and the first time the | |
2248 | main linker code calls BFD after examining all the input files | |
2249 | (size_dynamic_sections) the input sections have already been | |
2250 | mapped to the output sections. If the section turns out not to | |
2251 | be needed, we can discard it later. We will never need this | |
2252 | section when generating a shared object, since they do not use | |
2253 | copy relocs. */ | |
0e1862bb | 2254 | if (! bfd_link_executable (info)) |
07d6d2b8 AM |
2255 | { |
2256 | s = bfd_make_section_anyway_with_flags (abfd, | |
3d4d4302 AM |
2257 | (bed->default_use_rela_p |
2258 | ? ".rela.bss" : ".rel.bss"), | |
2259 | flags | SEC_READONLY); | |
07d6d2b8 | 2260 | if (s == NULL |
fd361982 | 2261 | || !bfd_set_section_alignment (s, ptralign)) |
0a1b45a2 | 2262 | return false; |
07d6d2b8 | 2263 | } |
99706f30 SR |
2264 | } |
2265 | ||
0a1b45a2 | 2266 | return true; |
99706f30 SR |
2267 | } |
2268 | \f | |
2269 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2270 | regular object. The current definition is in some section of the | |
2271 | dynamic object, but we're not including those sections. We have to | |
2272 | change the definition to something the rest of the link can | |
2273 | understand. */ | |
2274 | ||
0a1b45a2 | 2275 | static bool |
99706f30 | 2276 | _bfd_cr16_elf_adjust_dynamic_symbol (struct bfd_link_info * info, |
07d6d2b8 | 2277 | struct elf_link_hash_entry * h) |
99706f30 SR |
2278 | { |
2279 | bfd * dynobj; | |
2280 | asection * s; | |
2281 | ||
2282 | dynobj = elf_hash_table (info)->dynobj; | |
2283 | ||
2284 | /* Make sure we know what is going on here. */ | |
2285 | BFD_ASSERT (dynobj != NULL | |
07d6d2b8 AM |
2286 | && (h->needs_plt |
2287 | || h->is_weakalias | |
2288 | || (h->def_dynamic | |
2289 | && h->ref_regular | |
2290 | && !h->def_regular))); | |
99706f30 SR |
2291 | |
2292 | /* If this is a function, put it in the procedure linkage table. We | |
2293 | will fill in the contents of the procedure linkage table later, | |
2294 | when we know the address of the .got section. */ | |
2295 | if (h->type == STT_FUNC | |
2296 | || h->needs_plt) | |
2297 | { | |
0e1862bb | 2298 | if (! bfd_link_executable (info) |
07d6d2b8 AM |
2299 | && !h->def_dynamic |
2300 | && !h->ref_dynamic) | |
2301 | { | |
2302 | /* This case can occur if we saw a PLT reloc in an input | |
2303 | file, but the symbol was never referred to by a dynamic | |
2304 | object. In such a case, we don't actually need to build | |
2305 | a procedure linkage table, and we can just do a REL32 | |
2306 | reloc instead. */ | |
2307 | BFD_ASSERT (h->needs_plt); | |
0a1b45a2 | 2308 | return true; |
07d6d2b8 | 2309 | } |
99706f30 SR |
2310 | |
2311 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2312 | if (h->dynindx == -1) | |
07d6d2b8 AM |
2313 | { |
2314 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 2315 | return false; |
07d6d2b8 | 2316 | } |
99706f30 SR |
2317 | |
2318 | /* We also need to make an entry in the .got.plt section, which | |
07d6d2b8 | 2319 | will be placed in the .got section by the linker script. */ |
99706f30 | 2320 | |
ce558b89 | 2321 | s = elf_hash_table (info)->sgotplt; |
99706f30 SR |
2322 | BFD_ASSERT (s != NULL); |
2323 | s->size += 4; | |
2324 | ||
2325 | /* We also need to make an entry in the .rela.plt section. */ | |
2326 | ||
ce558b89 | 2327 | s = elf_hash_table (info)->srelplt; |
99706f30 SR |
2328 | BFD_ASSERT (s != NULL); |
2329 | s->size += sizeof (Elf32_External_Rela); | |
2330 | ||
0a1b45a2 | 2331 | return true; |
99706f30 SR |
2332 | } |
2333 | ||
2334 | /* If this is a weak symbol, and there is a real definition, the | |
2335 | processor independent code will have arranged for us to see the | |
2336 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2337 | if (h->is_weakalias) |
99706f30 | 2338 | { |
60d67dc8 AM |
2339 | struct elf_link_hash_entry *def = weakdef (h); |
2340 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2341 | h->root.u.def.section = def->root.u.def.section; | |
2342 | h->root.u.def.value = def->root.u.def.value; | |
0a1b45a2 | 2343 | return true; |
99706f30 SR |
2344 | } |
2345 | ||
2346 | /* This is a reference to a symbol defined by a dynamic object which | |
2347 | is not a function. */ | |
2348 | ||
2349 | /* If we are creating a shared library, we must presume that the | |
2350 | only references to the symbol are via the global offset table. | |
2351 | For such cases we need not do anything here; the relocations will | |
2352 | be handled correctly by relocate_section. */ | |
0e1862bb | 2353 | if (bfd_link_executable (info)) |
0a1b45a2 | 2354 | return true; |
99706f30 SR |
2355 | |
2356 | /* If there are no references to this symbol that do not use the | |
2357 | GOT, we don't need to generate a copy reloc. */ | |
2358 | if (!h->non_got_ref) | |
0a1b45a2 | 2359 | return true; |
99706f30 | 2360 | |
99706f30 SR |
2361 | /* We must allocate the symbol in our .dynbss section, which will |
2362 | become part of the .bss section of the executable. There will be | |
2363 | an entry for this symbol in the .dynsym section. The dynamic | |
2364 | object will contain position independent code, so all references | |
2365 | from the dynamic object to this symbol will go through the global | |
2366 | offset table. The dynamic linker will use the .dynsym entry to | |
2367 | determine the address it must put in the global offset table, so | |
2368 | both the dynamic object and the regular object will refer to the | |
2369 | same memory location for the variable. */ | |
2370 | ||
3d4d4302 | 2371 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
99706f30 SR |
2372 | BFD_ASSERT (s != NULL); |
2373 | ||
2374 | /* We must generate a R_CR16_COPY reloc to tell the dynamic linker to | |
2375 | copy the initial value out of the dynamic object and into the | |
2376 | runtime process image. We need to remember the offset into the | |
2377 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 2378 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
99706f30 SR |
2379 | { |
2380 | asection * srel; | |
2381 | ||
3d4d4302 | 2382 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
99706f30 SR |
2383 | BFD_ASSERT (srel != NULL); |
2384 | srel->size += sizeof (Elf32_External_Rela); | |
2385 | h->needs_copy = 1; | |
2386 | } | |
2387 | ||
6cabe1ea | 2388 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
99706f30 SR |
2389 | } |
2390 | ||
2391 | /* Set the sizes of the dynamic sections. */ | |
2392 | ||
0a1b45a2 | 2393 | static bool |
af969b14 AM |
2394 | _bfd_cr16_elf_late_size_sections (bfd * output_bfd, |
2395 | struct bfd_link_info * info) | |
99706f30 SR |
2396 | { |
2397 | bfd * dynobj; | |
2398 | asection * s; | |
0a1b45a2 | 2399 | bool relocs; |
99706f30 SR |
2400 | |
2401 | dynobj = elf_hash_table (info)->dynobj; | |
af969b14 AM |
2402 | if (dynobj == NULL) |
2403 | return true; | |
99706f30 SR |
2404 | |
2405 | if (elf_hash_table (info)->dynamic_sections_created) | |
2406 | { | |
2407 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 2408 | if (bfd_link_executable (info) && !info->nointerp) |
07d6d2b8 | 2409 | { |
99706f30 | 2410 | #if 0 |
07d6d2b8 AM |
2411 | s = bfd_get_linker_section (dynobj, ".interp"); |
2412 | BFD_ASSERT (s != NULL); | |
2413 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2414 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
99706f30 | 2415 | #endif |
07d6d2b8 | 2416 | } |
99706f30 SR |
2417 | } |
2418 | else | |
2419 | { | |
2420 | /* We may have created entries in the .rela.got section. | |
07d6d2b8 AM |
2421 | However, if we are not creating the dynamic sections, we will |
2422 | not actually use these entries. Reset the size of .rela.got, | |
2423 | which will cause it to get stripped from the output file | |
2424 | below. */ | |
ce558b89 | 2425 | s = elf_hash_table (info)->srelgot; |
99706f30 | 2426 | if (s != NULL) |
07d6d2b8 | 2427 | s->size = 0; |
99706f30 SR |
2428 | } |
2429 | ||
2430 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2431 | determined the sizes of the various dynamic sections. Allocate | |
2432 | memory for them. */ | |
0a1b45a2 | 2433 | relocs = false; |
99706f30 SR |
2434 | for (s = dynobj->sections; s != NULL; s = s->next) |
2435 | { | |
2436 | const char * name; | |
2437 | ||
2438 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
07d6d2b8 | 2439 | continue; |
99706f30 SR |
2440 | |
2441 | /* It's OK to base decisions on the section name, because none | |
07d6d2b8 | 2442 | of the dynobj section names depend upon the input files. */ |
fd361982 | 2443 | name = bfd_section_name (s); |
99706f30 SR |
2444 | |
2445 | if (strcmp (name, ".plt") == 0) | |
07d6d2b8 AM |
2446 | { |
2447 | /* Remember whether there is a PLT. */ | |
3084d7a2 | 2448 | ; |
07d6d2b8 | 2449 | } |
08dedd66 | 2450 | else if (startswith (name, ".rela")) |
07d6d2b8 AM |
2451 | { |
2452 | if (s->size != 0) | |
2453 | { | |
07d6d2b8 AM |
2454 | /* Remember whether there are any reloc sections other |
2455 | than .rela.plt. */ | |
2456 | if (strcmp (name, ".rela.plt") != 0) | |
0a1b45a2 | 2457 | relocs = true; |
07d6d2b8 AM |
2458 | |
2459 | /* We use the reloc_count field as a counter if we need | |
2460 | to copy relocs into the output file. */ | |
2461 | s->reloc_count = 0; | |
2462 | } | |
2463 | } | |
08dedd66 | 2464 | else if (! startswith (name, ".got") |
07d6d2b8 AM |
2465 | && strcmp (name, ".dynbss") != 0) |
2466 | /* It's not one of our sections, so don't allocate space. */ | |
2467 | continue; | |
99706f30 SR |
2468 | |
2469 | if (s->size == 0) | |
07d6d2b8 AM |
2470 | { |
2471 | /* If we don't need this section, strip it from the | |
2472 | output file. This is mostly to handle .rela.bss and | |
2473 | .rela.plt. We must create both sections in | |
2474 | create_dynamic_sections, because they must be created | |
2475 | before the linker maps input sections to output | |
2476 | sections. The linker does that before | |
2477 | adjust_dynamic_symbol is called, and it is that | |
2478 | function which decides whether anything needs to go | |
2479 | into these sections. */ | |
2480 | s->flags |= SEC_EXCLUDE; | |
2481 | continue; | |
2482 | } | |
2483 | ||
db75b8f7 AM |
2484 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2485 | continue; | |
99706f30 SR |
2486 | |
2487 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
2488 | here in case unused entries are not reclaimed before the |
2489 | section's contents are written out. This should not happen, | |
2490 | but this way if it does, we get a R_CR16_NONE reloc | |
2491 | instead of garbage. */ | |
99706f30 SR |
2492 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
2493 | if (s->contents == NULL) | |
0a1b45a2 | 2494 | return false; |
99706f30 SR |
2495 | } |
2496 | ||
3084d7a2 | 2497 | return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs); |
99706f30 SR |
2498 | } |
2499 | ||
2500 | /* Finish up dynamic symbol handling. We set the contents of various | |
2501 | dynamic sections here. */ | |
2502 | ||
0a1b45a2 | 2503 | static bool |
99706f30 | 2504 | _bfd_cr16_elf_finish_dynamic_symbol (bfd * output_bfd, |
07d6d2b8 AM |
2505 | struct bfd_link_info * info, |
2506 | struct elf_link_hash_entry * h, | |
2507 | Elf_Internal_Sym * sym) | |
99706f30 SR |
2508 | { |
2509 | bfd * dynobj; | |
2510 | ||
2511 | dynobj = elf_hash_table (info)->dynobj; | |
2512 | ||
2513 | if (h->got.offset != (bfd_vma) -1) | |
2514 | { | |
07d6d2b8 AM |
2515 | asection * sgot; |
2516 | asection * srel; | |
99706f30 SR |
2517 | Elf_Internal_Rela rel; |
2518 | ||
2519 | /* This symbol has an entry in the global offset table. Set it up. */ | |
2520 | ||
ce558b89 AM |
2521 | sgot = elf_hash_table (info)->sgot; |
2522 | srel = elf_hash_table (info)->srelgot; | |
99706f30 SR |
2523 | BFD_ASSERT (sgot != NULL && srel != NULL); |
2524 | ||
2525 | rel.r_offset = (sgot->output_section->vma | |
07d6d2b8 AM |
2526 | + sgot->output_offset |
2527 | + (h->got.offset & ~1)); | |
99706f30 SR |
2528 | |
2529 | /* If this is a -Bsymbolic link, and the symbol is defined | |
07d6d2b8 AM |
2530 | locally, we just want to emit a RELATIVE reloc. Likewise if |
2531 | the symbol was forced to be local because of a version file. | |
2532 | The entry in the global offset table will already have been | |
2533 | initialized in the relocate_section function. */ | |
0e1862bb | 2534 | if (bfd_link_executable (info) |
07d6d2b8 AM |
2535 | && (info->symbolic || h->dynindx == -1) |
2536 | && h->def_regular) | |
2537 | { | |
2538 | rel.r_info = ELF32_R_INFO (0, R_CR16_GOT_REGREL20); | |
2539 | rel.r_addend = (h->root.u.def.value | |
2540 | + h->root.u.def.section->output_section->vma | |
2541 | + h->root.u.def.section->output_offset); | |
2542 | } | |
99706f30 | 2543 | else |
07d6d2b8 AM |
2544 | { |
2545 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
2546 | rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20); | |
2547 | rel.r_addend = 0; | |
2548 | } | |
99706f30 SR |
2549 | |
2550 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
07d6d2b8 AM |
2551 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
2552 | + srel->reloc_count)); | |
99706f30 SR |
2553 | ++ srel->reloc_count; |
2554 | } | |
2555 | ||
2556 | if (h->needs_copy) | |
2557 | { | |
07d6d2b8 | 2558 | asection * s; |
99706f30 SR |
2559 | Elf_Internal_Rela rel; |
2560 | ||
2561 | /* This symbol needs a copy reloc. Set it up. */ | |
2562 | BFD_ASSERT (h->dynindx != -1 | |
07d6d2b8 AM |
2563 | && (h->root.type == bfd_link_hash_defined |
2564 | || h->root.type == bfd_link_hash_defweak)); | |
99706f30 | 2565 | |
3d4d4302 | 2566 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
99706f30 SR |
2567 | BFD_ASSERT (s != NULL); |
2568 | ||
2569 | rel.r_offset = (h->root.u.def.value | |
07d6d2b8 AM |
2570 | + h->root.u.def.section->output_section->vma |
2571 | + h->root.u.def.section->output_offset); | |
99706f30 SR |
2572 | rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20); |
2573 | rel.r_addend = 0; | |
2574 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
07d6d2b8 AM |
2575 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
2576 | + s->reloc_count)); | |
db75b8f7 | 2577 | ++ s->reloc_count; |
99706f30 SR |
2578 | } |
2579 | ||
2580 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
9637f6ef | 2581 | if (h == elf_hash_table (info)->hdynamic |
99706f30 SR |
2582 | || h == elf_hash_table (info)->hgot) |
2583 | sym->st_shndx = SHN_ABS; | |
2584 | ||
0a1b45a2 | 2585 | return true; |
99706f30 SR |
2586 | } |
2587 | ||
2588 | /* Finish up the dynamic sections. */ | |
2589 | ||
0a1b45a2 | 2590 | static bool |
99706f30 | 2591 | _bfd_cr16_elf_finish_dynamic_sections (bfd * output_bfd, |
07d6d2b8 | 2592 | struct bfd_link_info * info) |
99706f30 SR |
2593 | { |
2594 | bfd * dynobj; | |
2595 | asection * sgot; | |
2596 | asection * sdyn; | |
2597 | ||
2598 | dynobj = elf_hash_table (info)->dynobj; | |
2599 | ||
ce558b89 | 2600 | sgot = elf_hash_table (info)->sgotplt; |
99706f30 | 2601 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 2602 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
99706f30 SR |
2603 | |
2604 | if (elf_hash_table (info)->dynamic_sections_created) | |
2605 | { | |
2606 | Elf32_External_Dyn * dyncon; | |
2607 | Elf32_External_Dyn * dynconend; | |
2608 | ||
2609 | BFD_ASSERT (sdyn != NULL); | |
2610 | ||
2611 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2612 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
2613 | ||
2614 | for (; dyncon < dynconend; dyncon++) | |
07d6d2b8 AM |
2615 | { |
2616 | Elf_Internal_Dyn dyn; | |
2617 | asection * s; | |
2618 | ||
2619 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2620 | ||
2621 | switch (dyn.d_tag) | |
2622 | { | |
2623 | default: | |
2624 | break; | |
2625 | ||
2626 | case DT_PLTGOT: | |
2627 | s = elf_hash_table (info)->sgotplt; | |
2628 | goto get_vma; | |
2629 | ||
2630 | case DT_JMPREL: | |
2631 | s = elf_hash_table (info)->srelplt; | |
2632 | get_vma: | |
2633 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
2634 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2635 | break; | |
2636 | ||
2637 | case DT_PLTRELSZ: | |
2638 | s = elf_hash_table (info)->srelplt; | |
2639 | dyn.d_un.d_val = s->size; | |
2640 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2641 | break; | |
2642 | } | |
2643 | } | |
99706f30 SR |
2644 | |
2645 | } | |
2646 | ||
2647 | /* Fill in the first three entries in the global offset table. */ | |
2648 | if (sgot->size > 0) | |
2649 | { | |
2650 | if (sdyn == NULL) | |
07d6d2b8 | 2651 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
99706f30 | 2652 | else |
07d6d2b8 AM |
2653 | bfd_put_32 (output_bfd, |
2654 | sdyn->output_section->vma + sdyn->output_offset, | |
2655 | sgot->contents); | |
99706f30 SR |
2656 | } |
2657 | ||
2658 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2659 | ||
0a1b45a2 | 2660 | return true; |
99706f30 SR |
2661 | } |
2662 | ||
2663 | /* Given a .data.rel section and a .emreloc in-memory section, store | |
2664 | relocation information into the .emreloc section which can be | |
2665 | used at runtime to relocate the section. This is called by the | |
2666 | linker when the --embedded-relocs switch is used. This is called | |
2667 | after the add_symbols entry point has been called for all the | |
2668 | objects, and before the final_link entry point is called. */ | |
2669 | ||
0a1b45a2 | 2670 | bool |
99706f30 | 2671 | bfd_cr16_elf32_create_embedded_relocs (bfd *abfd, |
07d6d2b8 AM |
2672 | struct bfd_link_info *info, |
2673 | asection *datasec, | |
2674 | asection *relsec, | |
2675 | char **errmsg) | |
99706f30 SR |
2676 | { |
2677 | Elf_Internal_Shdr *symtab_hdr; | |
2678 | Elf_Internal_Sym *isymbuf = NULL; | |
2679 | Elf_Internal_Rela *internal_relocs = NULL; | |
2680 | Elf_Internal_Rela *irel, *irelend; | |
2681 | bfd_byte *p; | |
2682 | bfd_size_type amt; | |
2683 | ||
0e1862bb | 2684 | BFD_ASSERT (! bfd_link_relocatable (info)); |
99706f30 SR |
2685 | |
2686 | *errmsg = NULL; | |
2687 | ||
2688 | if (datasec->reloc_count == 0) | |
0a1b45a2 | 2689 | return true; |
99706f30 SR |
2690 | |
2691 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2692 | ||
2693 | /* Get a copy of the native relocations. */ | |
2694 | internal_relocs = (_bfd_elf_link_read_relocs | |
07d6d2b8 | 2695 | (abfd, datasec, NULL, NULL, info->keep_memory)); |
99706f30 SR |
2696 | if (internal_relocs == NULL) |
2697 | goto error_return; | |
2698 | ||
2699 | amt = (bfd_size_type) datasec->reloc_count * 8; | |
2700 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
2701 | if (relsec->contents == NULL) | |
2702 | goto error_return; | |
2703 | ||
2704 | p = relsec->contents; | |
2705 | ||
2706 | irelend = internal_relocs + datasec->reloc_count; | |
2707 | for (irel = internal_relocs; irel < irelend; irel++, p += 8) | |
2708 | { | |
2709 | asection *targetsec; | |
2710 | ||
2711 | /* We are going to write a four byte longword into the runtime | |
db75b8f7 AM |
2712 | reloc section. The longword will be the address in the data |
2713 | section which must be relocated. It is followed by the name | |
2714 | of the target section NUL-padded or truncated to 8 | |
2715 | characters. */ | |
99706f30 SR |
2716 | |
2717 | /* We can only relocate absolute longword relocs at run time. */ | |
2718 | if (!((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a) | |
db75b8f7 | 2719 | || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32))) |
07d6d2b8 | 2720 | { |
0aa13fee | 2721 | *errmsg = _("unsupported relocation type"); |
07d6d2b8 AM |
2722 | bfd_set_error (bfd_error_bad_value); |
2723 | goto error_return; | |
2724 | } | |
99706f30 SR |
2725 | |
2726 | /* Get the target section referred to by the reloc. */ | |
2727 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
07d6d2b8 AM |
2728 | { |
2729 | /* A local symbol. */ | |
2730 | Elf_Internal_Sym *isym; | |
2731 | ||
2732 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2733 | if (isymbuf == NULL) | |
2734 | { | |
2735 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2736 | if (isymbuf == NULL) | |
2737 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2738 | symtab_hdr->sh_info, 0, | |
2739 | NULL, NULL, NULL); | |
2740 | if (isymbuf == NULL) | |
2741 | goto error_return; | |
2742 | } | |
2743 | ||
2744 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
2745 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2746 | } | |
99706f30 | 2747 | else |
07d6d2b8 AM |
2748 | { |
2749 | unsigned long indx; | |
2750 | struct elf_link_hash_entry *h; | |
2751 | ||
2752 | /* An external symbol. */ | |
2753 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2754 | h = elf_sym_hashes (abfd)[indx]; | |
2755 | BFD_ASSERT (h != NULL); | |
2756 | if (h->root.type == bfd_link_hash_defined | |
2757 | || h->root.type == bfd_link_hash_defweak) | |
2758 | targetsec = h->root.u.def.section; | |
2759 | else | |
2760 | targetsec = NULL; | |
2761 | } | |
99706f30 SR |
2762 | |
2763 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2764 | memset (p + 4, 0, 4); | |
2765 | if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a) | |
07d6d2b8 | 2766 | && (targetsec != NULL) ) |
db75b8f7 | 2767 | strncpy ((char *) p + 4, targetsec->output_section->name, 4); |
99706f30 SR |
2768 | } |
2769 | ||
c9594989 | 2770 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
99706f30 | 2771 | free (isymbuf); |
c9594989 | 2772 | if (elf_section_data (datasec)->relocs != internal_relocs) |
99706f30 | 2773 | free (internal_relocs); |
0a1b45a2 | 2774 | return true; |
99706f30 | 2775 | |
dc1e8a47 | 2776 | error_return: |
c9594989 | 2777 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
99706f30 | 2778 | free (isymbuf); |
c9594989 | 2779 | if (elf_section_data (datasec)->relocs != internal_relocs) |
99706f30 | 2780 | free (internal_relocs); |
0a1b45a2 | 2781 | return false; |
99706f30 SR |
2782 | } |
2783 | ||
2784 | ||
2785 | /* Classify relocation types, such that combreloc can sort them | |
2786 | properly. */ | |
2787 | ||
2788 | static enum elf_reloc_type_class | |
7e612e98 AM |
2789 | _bfd_cr16_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2790 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2791 | const Elf_Internal_Rela *rela) | |
99706f30 SR |
2792 | { |
2793 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2794 | { | |
2795 | case R_CR16_GOT_REGREL20: | |
2796 | case R_CR16_GOTC_REGREL20: | |
2797 | return reloc_class_relative; | |
2798 | default: | |
2799 | return reloc_class_normal; | |
2800 | } | |
2801 | } | |
2802 | ||
3d3d428f | 2803 | /* Definitions for setting CR16 target vector. */ |
07d6d2b8 AM |
2804 | #define TARGET_LITTLE_SYM cr16_elf32_vec |
2805 | #define TARGET_LITTLE_NAME "elf32-cr16" | |
2806 | #define ELF_ARCH bfd_arch_cr16 | |
2807 | #define ELF_MACHINE_CODE EM_CR16 | |
2808 | #define ELF_MACHINE_ALT1 EM_CR16_OLD | |
2809 | #define ELF_MAXPAGESIZE 0x1 | |
2810 | #define elf_symbol_leading_char '_' | |
2811 | ||
2812 | #define bfd_elf32_bfd_reloc_type_lookup elf_cr16_reloc_type_lookup | |
2813 | #define bfd_elf32_bfd_reloc_name_lookup elf_cr16_reloc_name_lookup | |
2814 | #define elf_info_to_howto elf_cr16_info_to_howto | |
f3185997 | 2815 | #define elf_info_to_howto_rel NULL |
07d6d2b8 AM |
2816 | #define elf_backend_relocate_section elf32_cr16_relocate_section |
2817 | #define bfd_elf32_bfd_relax_section elf32_cr16_relax_section | |
3d3d428f | 2818 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
07d6d2b8 AM |
2819 | elf32_cr16_get_relocated_section_contents |
2820 | #define elf_backend_gc_mark_hook elf32_cr16_gc_mark_hook | |
2821 | #define elf_backend_can_gc_sections 1 | |
2822 | #define elf_backend_rela_normal 1 | |
2823 | #define elf_backend_check_relocs cr16_elf_check_relocs | |
99706f30 SR |
2824 | /* So we can set bits in e_flags. */ |
2825 | #define elf_backend_final_write_processing \ | |
07d6d2b8 AM |
2826 | _bfd_cr16_elf_final_write_processing |
2827 | #define elf_backend_object_p _bfd_cr16_elf_object_p | |
99706f30 SR |
2828 | |
2829 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
07d6d2b8 | 2830 | _bfd_cr16_elf_merge_private_bfd_data |
99706f30 SR |
2831 | |
2832 | ||
2833 | #define bfd_elf32_bfd_link_hash_table_create \ | |
07d6d2b8 | 2834 | elf32_cr16_link_hash_table_create |
99706f30 SR |
2835 | |
2836 | #define elf_backend_create_dynamic_sections \ | |
07d6d2b8 | 2837 | _bfd_cr16_elf_create_dynamic_sections |
99706f30 | 2838 | #define elf_backend_adjust_dynamic_symbol \ |
07d6d2b8 | 2839 | _bfd_cr16_elf_adjust_dynamic_symbol |
af969b14 AM |
2840 | #define elf_backend_late_size_sections \ |
2841 | _bfd_cr16_elf_late_size_sections | |
d00dd7dc | 2842 | #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all |
99706f30 | 2843 | #define elf_backend_finish_dynamic_symbol \ |
07d6d2b8 | 2844 | _bfd_cr16_elf_finish_dynamic_symbol |
99706f30 | 2845 | #define elf_backend_finish_dynamic_sections \ |
07d6d2b8 | 2846 | _bfd_cr16_elf_finish_dynamic_sections |
99706f30 SR |
2847 | |
2848 | #define elf_backend_reloc_type_class _bfd_cr16_elf_reloc_type_class | |
2849 | ||
2850 | ||
07d6d2b8 AM |
2851 | #define elf_backend_want_got_plt 1 |
2852 | #define elf_backend_plt_readonly 1 | |
2853 | #define elf_backend_want_plt_sym 0 | |
2854 | #define elf_backend_got_header_size 12 | |
64f52338 | 2855 | #define elf_backend_dtrel_excludes_plt 1 |
3d3d428f NC |
2856 | |
2857 | #include "elf32-target.h" |