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b8891f8d | 1 | /* 32-bit ELF support for C-SKY. |
fd67aa11 | 2 | Copyright (C) 1998-2024 Free Software Foundation, Inc. |
b8891f8d AJ |
3 | Contributed by C-SKY Microsystems and Mentor Graphics. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
21 | ||
22 | #include "sysdep.h" | |
23 | #include "bfd.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/csky.h" | |
28 | #include "opcode/csky.h" | |
29 | #include <assert.h> | |
30 | #include "libiberty.h" | |
6e67e6b0 | 31 | #include "elf32-csky.h" |
b8891f8d AJ |
32 | |
33 | /* Data structures used for merging different arch variants. | |
34 | V1 (510/610) and V2 (8xx) processors are incompatible, but | |
35 | we can merge wthin each family. */ | |
36 | ||
37 | enum merge_class | |
38 | { | |
39 | CSKY_V1, | |
40 | CSKY_V2 | |
41 | }; | |
42 | ||
bd38246a | 43 | typedef const struct csky_arch_for_merge |
b8891f8d AJ |
44 | { |
45 | const char *name; | |
46 | const unsigned long arch_eflag; | |
47 | /* The files can merge only if they are in same class. */ | |
48 | enum merge_class class; | |
49 | /* When input files have different levels, | |
50 | the target sets arch_eflag to the largest level file's arch_eflag. */ | |
51 | unsigned int class_level; | |
52 | /* Control whether to print warning when merging with different arch. */ | |
53 | unsigned int do_warning; | |
54 | } csky_arch_for_merge; | |
55 | ||
bd38246a | 56 | static csky_arch_for_merge csky_archs[] = |
b8891f8d AJ |
57 | { |
58 | /* 510 and 610 merge to 610 without warning. */ | |
0861f561 CQ |
59 | { "ck510", CSKY_ARCH_510, CSKY_V1, 0, 0}, |
60 | { "ck610", CSKY_ARCH_610, CSKY_V1, 1, 0}, | |
b8891f8d | 61 | /* 801, 802, 803, 807, 810 merge to largest one. */ |
0861f561 CQ |
62 | { "ck801", CSKY_ARCH_801, CSKY_V2, 0, 1}, |
63 | { "ck802", CSKY_ARCH_802, CSKY_V2, 1, 1}, | |
64 | { "ck803", CSKY_ARCH_803, CSKY_V2, 2, 1}, | |
65 | { "ck807", CSKY_ARCH_807, CSKY_V2, 3, 1}, | |
66 | { "ck810", CSKY_ARCH_810, CSKY_V2, 4, 1}, | |
67 | { "ck860", CSKY_ARCH_860, CSKY_V2, 5, 1}, | |
b8891f8d AJ |
68 | { NULL, 0, 0, 0, 0} |
69 | }; | |
70 | ||
71 | /* Return the ARCH bits out of ABFD. */ | |
72 | #define bfd_csky_arch(abfd) \ | |
73 | (elf_elfheader (abfd)->e_flags & CSKY_ARCH_MASK) | |
74 | ||
75 | /* Return the ABI bits out of ABFD. */ | |
76 | #define bfd_csky_abi(abfd) \ | |
77 | (elf_elfheader (abfd)->e_flags & CSKY_ABI_MASK) | |
78 | ||
79 | ||
80 | /* The index of a howto-item is implicitly equal to | |
81 | the corresponding Relocation Type Encoding. */ | |
82 | static reloc_howto_type csky_elf_howto_table[] = | |
83 | { | |
84 | /* 0 */ | |
85 | HOWTO (R_CKCORE_NONE, /* type */ | |
86 | 0, /* rightshift */ | |
c94cb026 | 87 | 0, /* size */ |
b8891f8d | 88 | 0, /* bitsize */ |
0a1b45a2 | 89 | false, /* pc_relative */ |
b8891f8d AJ |
90 | 0, /* bitpos */ |
91 | complain_overflow_dont, /* complain_on_overflow */ | |
92 | NULL, /* special_function */ | |
93 | "R_CKCORE_NONE", /* name */ | |
0a1b45a2 | 94 | false, /* partial_inplace */ |
b8891f8d AJ |
95 | 0, /* src_mask */ |
96 | 0, /* dst_mask */ | |
0a1b45a2 | 97 | false), /* pcrel_offset */ |
b8891f8d AJ |
98 | |
99 | /* 1. */ | |
100 | HOWTO (R_CKCORE_ADDR32, /* type */ | |
101 | 0, /* rightshift */ | |
c94cb026 | 102 | 4, /* size */ |
b8891f8d | 103 | 32, /* bitsize */ |
0a1b45a2 | 104 | false, /* pc_relative */ |
b8891f8d AJ |
105 | 0, /* bitpos */ |
106 | complain_overflow_dont, /* complain_on_overflow */ | |
107 | bfd_elf_generic_reloc, /* special_function */ | |
108 | "R_CKCORE_ADDR32", /* name */ | |
0a1b45a2 | 109 | false, /* partial_inplace */ |
b8891f8d AJ |
110 | 0, /* src_mask */ |
111 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 112 | false), /* pcrel_offset */ |
b8891f8d AJ |
113 | |
114 | /* 2: Only for csky v1. */ | |
115 | HOWTO (R_CKCORE_PCREL_IMM8BY4, /* type */ | |
116 | 2, /* rightshift */ | |
c94cb026 | 117 | 2, /* size */ |
b8891f8d | 118 | 8, /* bitsize */ |
0a1b45a2 | 119 | true, /* pc_relative */ |
b8891f8d AJ |
120 | 0, /* bitpos */ |
121 | complain_overflow_bitfield, /* complain_on_overflow */ | |
122 | NULL, /* special_function */ | |
123 | "R_CKCORE_PCREL_IMM8BY4", /* name */ | |
0a1b45a2 | 124 | false, /* partial_inplace */ |
b8891f8d AJ |
125 | 0xff, /* src_mask */ |
126 | 0xff, /* dst_mask */ | |
0a1b45a2 | 127 | true), /* pcrel_offset */ |
b8891f8d AJ |
128 | |
129 | /* 3: Only for csky v1. */ | |
130 | HOWTO (R_CKCORE_PCREL_IMM11BY2, /* type */ | |
131 | 1, /* rightshift */ | |
c94cb026 | 132 | 2, /* size */ |
b8891f8d | 133 | 11, /* bitsize */ |
0a1b45a2 | 134 | true, /* pc_relative */ |
b8891f8d AJ |
135 | 0, /* bitpos */ |
136 | complain_overflow_signed, /* complain_on_overflow */ | |
137 | bfd_elf_generic_reloc, /* special_function */ | |
138 | "R_CKCORE_PCREL_IMM11BY2", /* name */ | |
0a1b45a2 | 139 | false, /* partial_inplace */ |
b8891f8d AJ |
140 | 0x7ff, /* src_mask */ |
141 | 0x7ff, /* dst_mask */ | |
0a1b45a2 | 142 | true), /* pcrel_offset */ |
b8891f8d AJ |
143 | |
144 | /* 4: DELETED. */ | |
5d0feb98 | 145 | HOWTO (R_CKCORE_PCREL_IMM4BY2,0,0,0,0,0,0,0,"R_CKCORE_PCREL_IMM4BY2",0,0,0,0), |
b8891f8d AJ |
146 | |
147 | /* 5. */ | |
148 | HOWTO (R_CKCORE_PCREL32, /* type */ | |
149 | 0, /* rightshift */ | |
c94cb026 | 150 | 4, /* size */ |
b8891f8d | 151 | 32, /* bitsize */ |
0a1b45a2 | 152 | true, /* pc_relative */ |
b8891f8d AJ |
153 | 0, /* bitpos */ |
154 | complain_overflow_dont, /* complain_on_overflow */ | |
fe75f42e | 155 | bfd_elf_generic_reloc, /* special_function */ |
b8891f8d | 156 | "R_CKCORE_PCREL32", /* name */ |
0a1b45a2 | 157 | false, /* partial_inplace */ |
b8891f8d AJ |
158 | 0x0, /* src_mask */ |
159 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 160 | true), /* pcrel_offset */ |
b8891f8d AJ |
161 | |
162 | /* 6: Only for csky v1. */ | |
163 | HOWTO (R_CKCORE_PCREL_JSR_IMM11BY2, /* type */ | |
164 | 1, /* rightshift */ | |
c94cb026 | 165 | 2, /* size */ |
b8891f8d | 166 | 11, /* bitsize */ |
0a1b45a2 | 167 | true, /* pc_relative */ |
b8891f8d AJ |
168 | 0, /* bitpos */ |
169 | complain_overflow_signed, /* complain_on_overflow */ | |
170 | bfd_elf_generic_reloc, /* special_function */ | |
171 | "R_CKCORE_PCREL_JSR_IMM11BY2", /* name */ | |
0a1b45a2 | 172 | false, /* partial_inplace */ |
b8891f8d AJ |
173 | 0x7ff, /* src_mask */ |
174 | 0x7ff, /* dst_mask */ | |
0a1b45a2 | 175 | true), /* pcrel_offset */ |
b8891f8d AJ |
176 | |
177 | /* 7: GNU extension to record C++ vtable member usage. */ | |
178 | HOWTO (R_CKCORE_GNU_VTENTRY, /* type */ | |
179 | 0, /* rightshift */ | |
c94cb026 | 180 | 4, /* size */ |
b8891f8d | 181 | 0, /* bitsize */ |
0a1b45a2 | 182 | false, /* pc_relative */ |
b8891f8d AJ |
183 | 0, /* bitpos */ |
184 | complain_overflow_dont, /* complain_on_overflow */ | |
185 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
186 | "R_CKCORE_GNU_VTENTRY", /* name */ | |
0a1b45a2 | 187 | false, /* partial_inplace */ |
b8891f8d AJ |
188 | 0x0, /* src_mask */ |
189 | 0x0, /* dst_mask */ | |
0a1b45a2 | 190 | false), /* pcrel_offset */ |
b8891f8d AJ |
191 | |
192 | /* 8: GNU extension to record C++ vtable hierarchy. */ | |
193 | HOWTO (R_CKCORE_GNU_VTINHERIT, /* type */ | |
194 | 0, /* rightshift */ | |
c94cb026 | 195 | 4, /* size */ |
b8891f8d | 196 | 0, /* bitsize */ |
0a1b45a2 | 197 | false, /* pc_relative */ |
b8891f8d AJ |
198 | 0, /* bitpos */ |
199 | complain_overflow_dont, /* complain_on_overflow */ | |
200 | NULL, /* special_function */ | |
201 | "R_CKCORE_GNU_VTINHERIT", /* name */ | |
0a1b45a2 | 202 | false, /* partial_inplace */ |
b8891f8d AJ |
203 | 0x0, /* src_mask */ |
204 | 0x0, /* dst_mask */ | |
0a1b45a2 | 205 | false), /* pcrel_offset */ |
b8891f8d AJ |
206 | |
207 | /* 9. */ | |
208 | HOWTO (R_CKCORE_RELATIVE, /* type */ | |
209 | 0, /* rightshift */ | |
c94cb026 | 210 | 4, /* size */ |
b8891f8d | 211 | 32, /* bitsize */ |
0a1b45a2 | 212 | false, /* pc_relative */ |
b8891f8d AJ |
213 | 0, /* bitpos */ |
214 | complain_overflow_signed, /* complain_on_overflow */ | |
215 | bfd_elf_generic_reloc, /* special_function */ | |
216 | "R_CKCORE_RELATIVE", /* name */ | |
0a1b45a2 | 217 | true, /* partial_inplace */ |
b8891f8d AJ |
218 | 0x0, /* src_mask */ |
219 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 220 | false), /* pcrel_offset */ |
b8891f8d AJ |
221 | |
222 | /* 10: None. */ | |
223 | /* FIXME: It is a bug that copy relocations are not implemented. */ | |
224 | HOWTO (R_CKCORE_COPY, /* type */ | |
225 | 0, /* rightshift */ | |
c94cb026 | 226 | 4, /* size */ |
b8891f8d | 227 | 32, /* bitsize */ |
0a1b45a2 | 228 | false, /* pc_relative */ |
b8891f8d AJ |
229 | 0, /* bitpos */ |
230 | complain_overflow_bitfield, /* complain_on_overflow */ | |
231 | bfd_elf_generic_reloc, /* special_function */ | |
232 | "R_CKCORE_COPY", /* name */ | |
0a1b45a2 | 233 | true, /* partial_inplace */ |
b8891f8d AJ |
234 | 0xffffffff, /* src_mask */ |
235 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 236 | false), /* pcrel_offset */ |
b8891f8d AJ |
237 | |
238 | /* 11: None. */ | |
5d0feb98 | 239 | HOWTO (R_CKCORE_GLOB_DAT,0,0,0,0,0,0,0,"R_CKCORE_GLOB_DAT",0,0,0,0), |
b8891f8d AJ |
240 | |
241 | /* 12: None. */ | |
5d0feb98 | 242 | HOWTO (R_CKCORE_JUMP_SLOT,0,0,0,0,0,0,0,"R_CKCORE_JUMP_SLOT",0,0,0,0), |
b8891f8d AJ |
243 | |
244 | /* 13. */ | |
245 | HOWTO (R_CKCORE_GOTOFF, /* type */ | |
246 | 0, /* rightshift */ | |
c94cb026 | 247 | 4, /* size */ |
b8891f8d | 248 | 32, /* bitsize */ |
0a1b45a2 | 249 | false, /* pc_relative */ |
b8891f8d AJ |
250 | 0, /* bitpos */ |
251 | complain_overflow_dont, /* complain_on_overflow */ | |
252 | bfd_elf_generic_reloc, /* special_function */ | |
253 | "R_CKCORE_GOTOFF", /* name */ | |
0a1b45a2 | 254 | true, /* partial_inplace */ |
b8891f8d AJ |
255 | 0x0, /* src_mask */ |
256 | 0xffffffffl, /* dst_mask */ | |
0a1b45a2 | 257 | false), /* pcrel_offset */ |
b8891f8d AJ |
258 | |
259 | /* 14. */ | |
260 | HOWTO (R_CKCORE_GOTPC, /* type */ | |
261 | 0, /* rightshift */ | |
c94cb026 | 262 | 4, /* size */ |
b8891f8d | 263 | 32, /* bitsize */ |
0a1b45a2 | 264 | true, /* pc_relative */ |
b8891f8d AJ |
265 | 0, /* bitpos */ |
266 | complain_overflow_dont, /* complain_on_overflow */ | |
267 | bfd_elf_generic_reloc, /* special_function */ | |
268 | "R_CKCORE_GOTPC", /* name */ | |
0a1b45a2 | 269 | true, /* partial_inplace */ |
b8891f8d AJ |
270 | 0x0, /* src_mask */ |
271 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 272 | false), /* pcrel_offset */ |
b8891f8d AJ |
273 | |
274 | /* 15. */ | |
275 | HOWTO (R_CKCORE_GOT32, /* type */ | |
276 | 0, /* rightshift */ | |
c94cb026 | 277 | 4, /* size */ |
b8891f8d | 278 | 32, /* bitsize */ |
0a1b45a2 | 279 | false, /* pc_relative */ |
b8891f8d AJ |
280 | 0, /* bitpos */ |
281 | complain_overflow_dont, /* complain_on_overflow */ | |
282 | bfd_elf_generic_reloc, /* special_function */ | |
283 | "R_CKCORE_GOT32", /* name */ | |
0a1b45a2 | 284 | true, /* partial_inplace */ |
b8891f8d AJ |
285 | 0x0, /* src_mask */ |
286 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 287 | true), /* pcrel_offset */ |
b8891f8d AJ |
288 | |
289 | /* 16. */ | |
290 | HOWTO (R_CKCORE_PLT32, /* type */ | |
291 | 0, /* rightshift */ | |
c94cb026 | 292 | 4, /* size */ |
b8891f8d | 293 | 32, /* bitsize */ |
0a1b45a2 | 294 | false, /* pc_relative */ |
b8891f8d AJ |
295 | 0, /* bitpos */ |
296 | complain_overflow_dont, /* complain_on_overflow */ | |
297 | bfd_elf_generic_reloc, /* special_function */ | |
298 | "R_CKCORE_PLT32", /* name */ | |
0a1b45a2 | 299 | true, /* partial_inplace */ |
b8891f8d AJ |
300 | 0x0, /* src_mask */ |
301 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 302 | true), /* pcrel_offset */ |
b8891f8d AJ |
303 | |
304 | /* 17: None. */ | |
5d0feb98 | 305 | HOWTO (R_CKCORE_ADDRGOT,0,0,0,0,0,0,0,"R_CKCORE_ADDRGOT",0,0,0,0), |
b8891f8d AJ |
306 | |
307 | /* 18: None. */ | |
5d0feb98 | 308 | HOWTO (R_CKCORE_ADDRPLT,0,0,0,0,0,0,0,"R_CKCORE_ADDRPLT",0,0,0,0), |
b8891f8d AJ |
309 | |
310 | /* 19: Only for csky v2. */ | |
311 | HOWTO (R_CKCORE_PCREL_IMM26BY2, /* type */ | |
312 | 1, /* rightshift */ | |
c94cb026 | 313 | 4, /* size */ |
b8891f8d | 314 | 26, /* bitsize */ |
0a1b45a2 | 315 | true, /* pc_relative */ |
b8891f8d AJ |
316 | 0, /* bitpos */ |
317 | complain_overflow_signed, /* complain_on_overflow */ | |
318 | bfd_elf_generic_reloc, /* special_function */ | |
319 | "R_CKCORE_PCREL_IMM26BY2", /* name */ | |
0a1b45a2 | 320 | false, /* partial_inplace */ |
b8891f8d AJ |
321 | 0x0, /* src_mask */ |
322 | 0x3ffffff, /* dst_mask */ | |
0a1b45a2 | 323 | true), /* pcrel_offset */ |
b8891f8d AJ |
324 | |
325 | /* 20: Only for csky v2. */ | |
326 | HOWTO (R_CKCORE_PCREL_IMM16BY2, /* type */ | |
f6a1f957 | 327 | 1, /* rightshift */ |
c94cb026 | 328 | 4, /* size */ |
f6a1f957 LX |
329 | 16, /* bitsize */ |
330 | true, /* pc_relative */ | |
331 | 0, /* bitpos */ | |
332 | complain_overflow_signed, /* complain_on_overflow */ | |
333 | bfd_elf_generic_reloc, /* special_function */ | |
334 | "R_CKCORE_PCREL_IMM16BY2", /* name */ | |
335 | false, /* partial_inplace */ | |
336 | 0x0, /* src_mask */ | |
337 | 0xffff, /* dst_mask */ | |
338 | true), /* pcrel_offset */ | |
b8891f8d AJ |
339 | |
340 | /* 21: Only for csky v2. */ | |
341 | HOWTO (R_CKCORE_PCREL_IMM16BY4, /* type */ | |
f6a1f957 | 342 | 2, /* rightshift */ |
c94cb026 | 343 | 4, /* size */ |
f6a1f957 LX |
344 | 16, /* bitsize */ |
345 | true, /* pc_relative */ | |
346 | 0, /* bitpos */ | |
347 | complain_overflow_bitfield, /* complain_on_overflow */ | |
348 | bfd_elf_generic_reloc, /* special_function */ | |
349 | "R_CKCORE_PCREL_IMM16BY4", /* name */ | |
350 | false, /* partial_inplace */ | |
351 | 0xffff0000, /* src_mask */ | |
352 | 0xffff, /* dst_mask */ | |
353 | true), /* pcrel_offset */ | |
b8891f8d AJ |
354 | |
355 | /* 22: Only for csky v2. */ | |
356 | HOWTO (R_CKCORE_PCREL_IMM10BY2, /* type */ | |
357 | 1, /* rightshift */ | |
c94cb026 | 358 | 2, /* size */ |
b8891f8d | 359 | 10, /* bitsize */ |
0a1b45a2 | 360 | true, /* pc_relative */ |
b8891f8d AJ |
361 | 0, /* bitpos */ |
362 | complain_overflow_signed, /* complain_on_overflow */ | |
363 | bfd_elf_generic_reloc, /* special_function */ | |
364 | "R_CKCORE_PCREL_IMM10BY2", /* name */ | |
0a1b45a2 | 365 | false, /* partial_inplace */ |
b8891f8d AJ |
366 | 0x0, /* src_mask */ |
367 | 0x3ff, /* dst_mask */ | |
0a1b45a2 | 368 | true), /* pcrel_offset */ |
b8891f8d AJ |
369 | |
370 | /* 23: Only for csky v2. */ | |
371 | HOWTO (R_CKCORE_PCREL_IMM10BY4, /* type */ | |
f6a1f957 | 372 | 2, /* rightshift */ |
c94cb026 | 373 | 4, /* size */ |
f6a1f957 LX |
374 | 10, /* bitsize */ |
375 | true, /* pc_relative */ | |
376 | 0, /* bitpos */ | |
377 | complain_overflow_bitfield, /* complain_on_overflow */ | |
378 | bfd_elf_generic_reloc, /* special_function */ | |
379 | "R_CKCORE_PCREL_IMM10BY4", /* name */ | |
380 | false, /* partial_inplace */ | |
381 | 0x0, /* src_mask */ | |
382 | 0x3ff, /* dst_mask */ | |
383 | true), /* pcrel_offset */ | |
b8891f8d AJ |
384 | |
385 | /* 24: Only for csky v2. */ | |
386 | HOWTO (R_CKCORE_ADDR_HI16, /* type */ | |
387 | 16, /* rightshift */ | |
c94cb026 | 388 | 4, /* size */ |
b8891f8d | 389 | 16, /* bitsize */ |
0a1b45a2 | 390 | false, /* pc_relative */ |
b8891f8d AJ |
391 | 0, /* bitpos */ |
392 | complain_overflow_dont, /* complain_on_overflow */ | |
393 | bfd_elf_generic_reloc, /* special_function */ | |
394 | "R_CKCORE_ADDR_HI16", /* name */ | |
0a1b45a2 | 395 | false, /* partial_inplace */ |
b8891f8d AJ |
396 | 0x0, /* src_mask */ |
397 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 398 | false), /* pcrel_offset */ |
b8891f8d AJ |
399 | |
400 | /* 25. */ | |
401 | HOWTO (R_CKCORE_ADDR_LO16, /* type */ | |
402 | 0, /* rightshift */ | |
c94cb026 | 403 | 4, /* size */ |
b8891f8d | 404 | 16, /* bitsize */ |
0a1b45a2 | 405 | false, /* pc_relative */ |
b8891f8d AJ |
406 | 0, /* bitpos */ |
407 | complain_overflow_dont, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
409 | "R_CKCORE_ADDR_LO16", /* name */ | |
0a1b45a2 | 410 | false, /* partial_inplace */ |
b8891f8d AJ |
411 | 0x0, /* src_mask */ |
412 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 413 | false), /* pcrel_offset */ |
b8891f8d AJ |
414 | |
415 | /* 26. */ | |
416 | HOWTO (R_CKCORE_GOTPC_HI16, /* type */ | |
417 | 16, /* rightshift */ | |
c94cb026 | 418 | 4, /* size */ |
b8891f8d | 419 | 16, /* bitsize */ |
0a1b45a2 | 420 | true, /* pc_relative */ |
b8891f8d AJ |
421 | 0, /* bitpos */ |
422 | complain_overflow_dont, /* complain_on_overflow */ | |
423 | bfd_elf_generic_reloc, /* special_function */ | |
424 | "R_CKCORE_GOTPC_HI16", /* name */ | |
0a1b45a2 | 425 | false, /* partial_inplace */ |
b8891f8d AJ |
426 | 0x0, /* src_mask */ |
427 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 428 | false), /* pcrel_offset */ |
b8891f8d AJ |
429 | |
430 | /* 27. */ | |
431 | HOWTO (R_CKCORE_GOTPC_LO16, /* type */ | |
432 | 0, /* rightshift */ | |
c94cb026 | 433 | 4, /* size */ |
b8891f8d | 434 | 16, /* bitsize */ |
0a1b45a2 | 435 | true, /* pc_relative */ |
b8891f8d AJ |
436 | 0, /* bitpos */ |
437 | complain_overflow_dont, /* complain_on_overflow */ | |
438 | bfd_elf_generic_reloc, /* special_function */ | |
439 | "R_CKCORE_GOTPC_LO16", /* name */ | |
0a1b45a2 | 440 | false, /* partial_inplace */ |
b8891f8d AJ |
441 | 0x0, /* src_mask */ |
442 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 443 | false), /* pcrel_offset */ |
b8891f8d AJ |
444 | |
445 | /* 28. */ | |
446 | HOWTO (R_CKCORE_GOTOFF_HI16, /* type */ | |
447 | 16, /* rightshift */ | |
c94cb026 | 448 | 4, /* size */ |
b8891f8d | 449 | 16, /* bitsize */ |
0a1b45a2 | 450 | false, /* pc_relative */ |
b8891f8d AJ |
451 | 0, /* bitpos */ |
452 | complain_overflow_dont, /* complain_on_overflow */ | |
453 | bfd_elf_generic_reloc, /* special_function */ | |
454 | "R_CKCORE_GOTOFF_HI16", /* name */ | |
0a1b45a2 | 455 | false, /* partial_inplace */ |
b8891f8d AJ |
456 | 0x0, /* src_mask */ |
457 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 458 | false), /* pcrel_offset */ |
b8891f8d AJ |
459 | |
460 | /* 29. */ | |
461 | HOWTO (R_CKCORE_GOTOFF_LO16, /* type */ | |
462 | 0, /* rightshift */ | |
c94cb026 | 463 | 4, /* size */ |
b8891f8d | 464 | 16, /* bitsize */ |
0a1b45a2 | 465 | false, /* pc_relative */ |
b8891f8d AJ |
466 | 0, /* bitpos */ |
467 | complain_overflow_dont, /* complain_on_overflow */ | |
468 | bfd_elf_generic_reloc, /* special_function */ | |
469 | "R_CKCORE_GOTOFF_LO16", /* name */ | |
0a1b45a2 | 470 | false, /* partial_inplace */ |
b8891f8d AJ |
471 | 0x0, /* src_mask */ |
472 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 473 | false), /* pcrel_offset */ |
b8891f8d AJ |
474 | |
475 | /* 30. */ | |
476 | HOWTO (R_CKCORE_GOT12, /* type */ | |
477 | 2, /* rightshift */ | |
c94cb026 | 478 | 4, /* size */ |
b8891f8d | 479 | 12, /* bitsize */ |
0a1b45a2 | 480 | false, /* pc_relative */ |
b8891f8d AJ |
481 | 0, /* bitpos */ |
482 | complain_overflow_bitfield, /* complain_on_overflow */ | |
483 | bfd_elf_generic_reloc, /* special_function */ | |
484 | "R_CKCORE_GOT12", /* name */ | |
0a1b45a2 | 485 | true, /* partial_inplace */ |
b8891f8d AJ |
486 | 0x0, /* src_mask */ |
487 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 488 | false), /* pcrel_offset */ |
b8891f8d AJ |
489 | |
490 | /* 31. */ | |
491 | HOWTO (R_CKCORE_GOT_HI16, /* type */ | |
492 | 16, /* rightshift */ | |
c94cb026 | 493 | 4, /* size */ |
b8891f8d | 494 | 16, /* bitsize */ |
0a1b45a2 | 495 | false, /* pc_relative */ |
b8891f8d AJ |
496 | 0, /* bitpos */ |
497 | complain_overflow_dont, /* complain_on_overflow */ | |
498 | bfd_elf_generic_reloc, /* special_function */ | |
499 | "R_CKCORE_GOT_HI16", /* name */ | |
0a1b45a2 | 500 | true, /* partial_inplace */ |
b8891f8d AJ |
501 | 0x0, /* src_mask */ |
502 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 503 | false), /* pcrel_offset */ |
b8891f8d AJ |
504 | |
505 | /* 32. */ | |
506 | HOWTO (R_CKCORE_GOT_LO16, /* type */ | |
507 | 0, /* rightshift */ | |
c94cb026 | 508 | 4, /* size */ |
b8891f8d | 509 | 16, /* bitsize */ |
0a1b45a2 | 510 | false, /* pc_relative */ |
b8891f8d AJ |
511 | 0, /* bitpos */ |
512 | complain_overflow_dont, /* complain_on_overflow */ | |
513 | bfd_elf_generic_reloc, /* special_function */ | |
514 | "R_CKCORE_GOT_LO16", /* name */ | |
0a1b45a2 | 515 | true, /* partial_inplace */ |
b8891f8d AJ |
516 | 0x0, /* src_mask */ |
517 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 518 | false), /* pcrel_offset */ |
b8891f8d AJ |
519 | |
520 | /* 33. */ | |
521 | HOWTO (R_CKCORE_PLT12, /* type */ | |
522 | 2, /* rightshift */ | |
c94cb026 | 523 | 4, /* size */ |
b8891f8d | 524 | 12, /* bitsize */ |
0a1b45a2 | 525 | false, /* pc_relative */ |
b8891f8d AJ |
526 | 0, /* bitpos */ |
527 | complain_overflow_bitfield, /* complain_on_overflow */ | |
528 | bfd_elf_generic_reloc, /* special_function */ | |
529 | "R_CKCORE_PLT12", /* name */ | |
0a1b45a2 | 530 | true, /* partial_inplace */ |
b8891f8d AJ |
531 | 0x0, /* src_mask */ |
532 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 533 | false), /* pcrel_offset */ |
b8891f8d AJ |
534 | |
535 | /* 34. */ | |
536 | HOWTO (R_CKCORE_PLT_HI16, /* type */ | |
537 | 16, /* rightshift */ | |
c94cb026 | 538 | 4, /* size */ |
b8891f8d | 539 | 16, /* bitsize */ |
0a1b45a2 | 540 | false, /* pc_relative */ |
b8891f8d AJ |
541 | 0, /* bitpos */ |
542 | complain_overflow_dont, /* complain_on_overflow */ | |
543 | bfd_elf_generic_reloc, /* special_function */ | |
544 | "R_CKCORE_PLT_HI16", /* name */ | |
0a1b45a2 | 545 | true, /* partial_inplace */ |
b8891f8d AJ |
546 | 0x0, /* src_mask */ |
547 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 548 | false), /* pcrel_offset */ |
b8891f8d AJ |
549 | |
550 | /* 35. */ | |
551 | HOWTO (R_CKCORE_PLT_LO16, /* type */ | |
552 | 0, /* rightshift */ | |
c94cb026 | 553 | 4, /* size */ |
b8891f8d | 554 | 16, /* bitsize */ |
0a1b45a2 | 555 | false, /* pc_relative */ |
b8891f8d AJ |
556 | 0, /* bitpos */ |
557 | complain_overflow_dont, /* complain_on_overflow */ | |
558 | bfd_elf_generic_reloc, /* special_function */ | |
559 | "R_CKCORE_PLT_LO16", /* name */ | |
0a1b45a2 | 560 | true, /* partial_inplace */ |
b8891f8d AJ |
561 | 0x0, /* src_mask */ |
562 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 563 | false), /* pcrel_offset */ |
b8891f8d AJ |
564 | |
565 | /* 36: None. */ | |
5d0feb98 | 566 | HOWTO (R_CKCORE_ADDRGOT_HI16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0), |
b8891f8d AJ |
567 | |
568 | /* 37: None. */ | |
5d0feb98 | 569 | HOWTO (R_CKCORE_ADDRGOT_LO16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0), |
b8891f8d AJ |
570 | |
571 | /* 38: None. */ | |
5d0feb98 | 572 | HOWTO (R_CKCORE_ADDRPLT_HI16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0), |
b8891f8d AJ |
573 | |
574 | /* 39: None. */ | |
5d0feb98 | 575 | HOWTO (R_CKCORE_ADDRPLT_LO16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0), |
b8891f8d AJ |
576 | |
577 | /* 40. */ | |
578 | HOWTO (R_CKCORE_PCREL_JSR_IMM26BY2, /* type */ | |
579 | 1, /* rightshift */ | |
c94cb026 | 580 | 4, /* size */ |
b8891f8d | 581 | 26, /* bitsize */ |
0a1b45a2 | 582 | true, /* pc_relative */ |
b8891f8d AJ |
583 | 0, /* bitpos */ |
584 | complain_overflow_signed, /* complain_on_overflow */ | |
585 | bfd_elf_generic_reloc, /* special_function */ | |
586 | "R_CKCORE_PCREL_JSR_IMM26BY2", /* name */ | |
0a1b45a2 | 587 | false, /* partial_inplace */ |
b8891f8d AJ |
588 | 0x0, /* src_mask */ |
589 | 0x3ffffff, /* dst_mask */ | |
0a1b45a2 | 590 | true), /* pcrel_offset */ |
b8891f8d AJ |
591 | |
592 | /* 41. */ | |
593 | HOWTO (R_CKCORE_TOFFSET_LO16, /* type */ | |
594 | 0, /* rightshift */ | |
c94cb026 | 595 | 4, /* size */ |
b8891f8d | 596 | 16, /* bitsize */ |
0a1b45a2 | 597 | false, /* pc_relative */ |
b8891f8d AJ |
598 | 0, /* bitpos */ |
599 | complain_overflow_unsigned, /* complain_on_overflow */ | |
600 | NULL, /* special_function */ | |
601 | "R_CKCORE_TOFFSET_LO16", /* name */ | |
0a1b45a2 | 602 | false, /* partial_inplace */ |
b8891f8d AJ |
603 | 0x0, /* src_mask */ |
604 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 605 | false), /* pcrel_offset */ |
b8891f8d AJ |
606 | |
607 | /* 42. */ | |
608 | HOWTO (R_CKCORE_DOFFSET_LO16, /* type */ | |
609 | 0, /* rightshift */ | |
c94cb026 | 610 | 4, /* size */ |
b8891f8d | 611 | 16, /* bitsize */ |
0a1b45a2 | 612 | false, /* pc_relative */ |
b8891f8d AJ |
613 | 0, /* bitpos */ |
614 | complain_overflow_unsigned, /* complain_on_overflow */ | |
615 | NULL, /* special_function */ | |
616 | "R_CKCORE_DOFFSET_LO16", /* name */ | |
0a1b45a2 | 617 | false, /* partial_inplace */ |
b8891f8d AJ |
618 | 0x0, /* src_mask */ |
619 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 620 | false), /* pcrel_offset */ |
b8891f8d AJ |
621 | |
622 | /* 43. */ | |
623 | HOWTO (R_CKCORE_PCREL_IMM18BY2, /* type */ | |
f6a1f957 | 624 | 1, /* rightshift */ |
c94cb026 | 625 | 4, /* size */ |
f6a1f957 LX |
626 | 18, /* bitsize */ |
627 | true, /* pc_relative */ | |
628 | 0, /* bitpos */ | |
629 | complain_overflow_signed, /* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* special_function */ | |
631 | "R_CKCORE_PCREL_IMM18BY2", /* name */ | |
632 | false, /* partial_inplace */ | |
633 | 0x0, /* src_mask */ | |
634 | 0x3ffff, /* dst_mask */ | |
635 | true), /* pcrel_offset */ | |
b8891f8d AJ |
636 | |
637 | /* 44. */ | |
638 | HOWTO (R_CKCORE_DOFFSET_IMM18, /* type */ | |
639 | 0, /* rightshift */ | |
c94cb026 | 640 | 4, /* size */ |
b8891f8d | 641 | 18, /* bitsize */ |
0a1b45a2 | 642 | false, /* pc_relative */ |
b8891f8d AJ |
643 | 0, /* bitpos */ |
644 | complain_overflow_unsigned, /* complain_on_overflow */ | |
645 | NULL, /* special_function */ | |
646 | "R_CKCORE_DOFFSET_IMM18", /* name */ | |
0a1b45a2 | 647 | false, /* partial_inplace */ |
b8891f8d AJ |
648 | 0x0, /* src_mask */ |
649 | 0x3ffff, /* dst_mask */ | |
0a1b45a2 | 650 | false), /* pcrel_offset */ |
b8891f8d AJ |
651 | |
652 | /* 45. */ | |
653 | HOWTO (R_CKCORE_DOFFSET_IMM18BY2, /* type */ | |
654 | 1, /* rightshift */ | |
c94cb026 | 655 | 4, /* size */ |
b8891f8d | 656 | 18, /* bitsize */ |
0a1b45a2 | 657 | false, /* pc_relative */ |
b8891f8d AJ |
658 | 0, /* bitpos */ |
659 | complain_overflow_unsigned, /* complain_on_overflow */ | |
660 | NULL, /* special_function */ | |
661 | "R_CKCORE_DOFFSET_IMM18BY2", /* name */ | |
0a1b45a2 | 662 | false, /* partial_inplace */ |
b8891f8d AJ |
663 | 0x0, /* src_mask */ |
664 | 0x3ffff, /* dst_mask */ | |
0a1b45a2 | 665 | false), /* pcrel_offset */ |
b8891f8d AJ |
666 | |
667 | /* 46. */ | |
668 | HOWTO (R_CKCORE_DOFFSET_IMM18BY4, /* type */ | |
669 | 2, /* rightshift */ | |
c94cb026 | 670 | 4, /* size */ |
b8891f8d | 671 | 18, /* bitsize */ |
0a1b45a2 | 672 | false, /* pc_relative */ |
b8891f8d AJ |
673 | 0, /* bitpos */ |
674 | complain_overflow_unsigned, /* complain_on_overflow */ | |
675 | NULL, /* special_function */ | |
676 | "R_CKCORE_DOFFSET_IMM18BY4", /* name */ | |
0a1b45a2 | 677 | false, /* partial_inplace */ |
b8891f8d AJ |
678 | 0x0, /* src_mask */ |
679 | 0x3ffff, /* dst_mask */ | |
0a1b45a2 | 680 | false), /* pcrel_offset */ |
b8891f8d AJ |
681 | |
682 | /* 47. */ | |
683 | HOWTO (R_CKCORE_GOTOFF_IMM18, /* type */ | |
684 | 0, /* rightshift */ | |
c94cb026 | 685 | 4, /* size */ |
b8891f8d | 686 | 18, /* bitsize */ |
0a1b45a2 | 687 | false, /* pc_relative */ |
b8891f8d AJ |
688 | 0, /* bitpos */ |
689 | complain_overflow_bitfield, /* complain_on_overflow */ | |
690 | bfd_elf_generic_reloc, /* special_function */ | |
691 | "R_CKCORE_GOTOFF_IMM18", /* name */ | |
0a1b45a2 | 692 | true, /* partial_inplace */ |
b8891f8d AJ |
693 | 0xfffc, /* src_mask */ |
694 | 0x3ffff, /* dst_mask */ | |
0a1b45a2 | 695 | false), /* pcrel_offset */ |
b8891f8d AJ |
696 | |
697 | /* 48. */ | |
698 | HOWTO (R_CKCORE_GOT_IMM18BY4, /* type */ | |
699 | 2, /* rightshift */ | |
c94cb026 | 700 | 4, /* size */ |
b8891f8d | 701 | 18, /* bitsize */ |
0a1b45a2 | 702 | false, /* pc_relative */ |
b8891f8d AJ |
703 | 0, /* bitpos */ |
704 | complain_overflow_bitfield, /* complain_on_overflow */ | |
705 | bfd_elf_generic_reloc, /* special_function */ | |
706 | "R_CKCORE_GOT_IMM18BY4", /* name */ | |
0a1b45a2 | 707 | true, /* partial_inplace */ |
b8891f8d AJ |
708 | 0xfffc, /* src_mask */ |
709 | 0x3ffff, /* dst_mask */ | |
0a1b45a2 | 710 | false), /* pcrel_offset */ |
b8891f8d AJ |
711 | |
712 | /* 49. */ | |
713 | HOWTO (R_CKCORE_PLT_IMM18BY4, /* type */ | |
714 | 2, /* rightshift */ | |
c94cb026 | 715 | 4, /* size */ |
b8891f8d | 716 | 18, /* bitsize */ |
0a1b45a2 | 717 | false, /* pc_relative */ |
b8891f8d AJ |
718 | 0, /* bitpos */ |
719 | complain_overflow_bitfield, /* complain_on_overflow */ | |
720 | bfd_elf_generic_reloc, /* special_function */ | |
721 | "R_CKCORE_PLT_IMM18BY4", /* name */ | |
0a1b45a2 | 722 | true, /* partial_inplace */ |
b8891f8d AJ |
723 | 0xfffc, /* src_mask */ |
724 | 0x3ffff, /* dst_mask */ | |
0a1b45a2 | 725 | true), /* pcrel_offset */ |
b8891f8d AJ |
726 | |
727 | /* 50: for lrw16. */ | |
728 | HOWTO (R_CKCORE_PCREL_IMM7BY4, /* type */ | |
729 | 2, /* rightshift */ | |
c94cb026 | 730 | 2, /* size */ |
b8891f8d | 731 | 7, /* bitsize */ |
0a1b45a2 | 732 | true, /* pc_relative */ |
b8891f8d AJ |
733 | 0, /* bitpos */ |
734 | complain_overflow_bitfield, /* complain_on_overflow */ | |
735 | bfd_elf_generic_reloc, /* special_function */ | |
736 | "R_CKCORE_PCREL_IMM7BY4", /* name */ | |
0a1b45a2 | 737 | false, /* partial_inplace */ |
b8891f8d AJ |
738 | 0xec1f, /* src_mask */ |
739 | 0x31f, /* dst_mask */ | |
0a1b45a2 | 740 | true), /* pcrel_offset */ |
b8891f8d AJ |
741 | |
742 | /* 51: for static nptl. */ | |
743 | HOWTO (R_CKCORE_TLS_LE32, /* type */ | |
744 | 0, /* rightshift */ | |
c94cb026 | 745 | 4, /* size */ |
b8891f8d | 746 | 32, /* bitsize */ |
0a1b45a2 | 747 | false, /* pc_relative */ |
b8891f8d AJ |
748 | 0, /* bitpos */ |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
750 | bfd_elf_generic_reloc, /* special_function */ | |
751 | "R_CKCORE_TLS_LE32", /* name */ | |
0a1b45a2 | 752 | false, /* partial_inplace */ |
b8891f8d AJ |
753 | 0x0, /* src_mask */ |
754 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 755 | true), /* pcrel_offset */ |
b8891f8d AJ |
756 | |
757 | /* 52: for static nptl. */ | |
758 | HOWTO (R_CKCORE_TLS_IE32, /* type */ | |
759 | 0, /* rightshift */ | |
c94cb026 | 760 | 4, /* size */ |
b8891f8d | 761 | 32, /* bitsize */ |
0a1b45a2 | 762 | false, /* pc_relative */ |
b8891f8d AJ |
763 | 0, /* bitpos */ |
764 | complain_overflow_dont, /* complain_on_overflow */ | |
765 | bfd_elf_generic_reloc, /* special_function */ | |
766 | "R_CKCORE_TLS_IE32", /* name */ | |
0a1b45a2 | 767 | false, /* partial_inplace */ |
b8891f8d AJ |
768 | 0x0, /* src_mask */ |
769 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 770 | true), /* pcrel_offset */ |
b8891f8d AJ |
771 | |
772 | /* 53: for pic nptl. */ | |
773 | HOWTO (R_CKCORE_TLS_GD32, /* type */ | |
774 | 0, /* rightshift */ | |
c94cb026 | 775 | 4, /* size */ |
b8891f8d | 776 | 32, /* bitsize */ |
0a1b45a2 | 777 | false, /* pc_relative */ |
b8891f8d AJ |
778 | 0, /* bitpos */ |
779 | complain_overflow_dont, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
781 | "R_CKCORE_TLS_GD32", /* name */ | |
0a1b45a2 | 782 | false, /* partial_inplace */ |
b8891f8d AJ |
783 | 0x0, /* src_mask */ |
784 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 785 | true), /* pcrel_offset */ |
b8891f8d AJ |
786 | |
787 | /* 54: for pic nptl. */ | |
788 | HOWTO (R_CKCORE_TLS_LDM32, /* type */ | |
789 | 0, /* rightshift */ | |
c94cb026 | 790 | 4, /* size */ |
b8891f8d | 791 | 32, /* bitsize */ |
0a1b45a2 | 792 | false, /* pc_relative */ |
b8891f8d AJ |
793 | 0, /* bitpos */ |
794 | complain_overflow_dont, /* complain_on_overflow */ | |
795 | bfd_elf_generic_reloc, /* special_function */ | |
796 | "R_CKCORE_TLS_LDM32", /* name */ | |
0a1b45a2 | 797 | false, /* partial_inplace */ |
b8891f8d AJ |
798 | 0x0, /* src_mask */ |
799 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 800 | true), /* pcrel_offset */ |
b8891f8d AJ |
801 | |
802 | /* 55: for pic nptl. */ | |
803 | HOWTO (R_CKCORE_TLS_LDO32, /* type */ | |
804 | 0, /* rightshift */ | |
c94cb026 | 805 | 4, /* size */ |
b8891f8d | 806 | 32, /* bitsize */ |
0a1b45a2 | 807 | false, /* pc_relative */ |
b8891f8d AJ |
808 | 0, /* bitpos */ |
809 | complain_overflow_dont, /* complain_on_overflow */ | |
810 | bfd_elf_generic_reloc, /* special_function */ | |
811 | "R_CKCORE_TLS_LDO32", /* name */ | |
0a1b45a2 | 812 | false, /* partial_inplace */ |
b8891f8d AJ |
813 | 0x0, /* src_mask */ |
814 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 815 | true), /* pcrel_offset */ |
b8891f8d AJ |
816 | |
817 | /* 56: for linker. */ | |
5d0feb98 | 818 | HOWTO (R_CKCORE_TLS_DTPMOD32,0,0,0,0,0,0,0,"R_CKCORE_TLS_DTPMOD32",0,0,0,0), |
b8891f8d AJ |
819 | |
820 | /* 57: for linker. */ | |
5d0feb98 | 821 | HOWTO (R_CKCORE_TLS_DTPOFF32,0,0,0,0,0,0,0,"R_CKCORE_TLS_DTPOFF32",0,0,0,0), |
b8891f8d AJ |
822 | |
823 | /* 58: for linker. */ | |
5d0feb98 | 824 | HOWTO (R_CKCORE_TLS_TPOFF32,0,0,0,0,0,0,0,"R_CKCORE_TLS_TPOFF32",0,0,0,0), |
b8891f8d AJ |
825 | |
826 | /* 59: for ck807f. */ | |
827 | HOWTO (R_CKCORE_PCREL_FLRW_IMM8BY4, /* type */ | |
f6a1f957 | 828 | 2, /* rightshift */ |
c94cb026 | 829 | 4, /* size */ |
f6a1f957 LX |
830 | 8, /* bitsize */ |
831 | true, /* pc_relative */ | |
832 | 0, /* bitpos */ | |
833 | complain_overflow_bitfield, /* complain_on_overflow */ | |
834 | bfd_elf_generic_reloc, /* special_function */ | |
835 | "R_CKCORE_PCREL_FLRW_IMM8BY4",/* name */ | |
836 | false, /* partial_inplace */ | |
837 | 0xfe1fff0f, /* src_mask */ | |
838 | 0x1e000f0, /* dst_mask */ | |
839 | true), /* pcrel_offset */ | |
b8891f8d AJ |
840 | |
841 | /* 60: for 810 not to generate jsri. */ | |
842 | HOWTO (R_CKCORE_NOJSRI, /* type */ | |
843 | 0, /* rightshift */ | |
c94cb026 | 844 | 4, /* size */ |
b8891f8d | 845 | 32, /* bitsize */ |
0a1b45a2 | 846 | false, /* pc_relative */ |
b8891f8d AJ |
847 | 0, /* bitpos */ |
848 | complain_overflow_dont, /* complain_on_overflow */ | |
849 | bfd_elf_generic_reloc, /* special_function */ | |
850 | "R_CKCORE_NOJSRI", /* name */ | |
0a1b45a2 | 851 | false, /* partial_inplace */ |
b8891f8d AJ |
852 | 0xffff, /* src_mask */ |
853 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 854 | false), /* pcrel_offset */ |
b8891f8d AJ |
855 | |
856 | /* 61: for callgraph. */ | |
857 | HOWTO (R_CKCORE_CALLGRAPH, /* type */ | |
858 | 0, /* rightshift */ | |
5d0feb98 | 859 | 0, /* size */ |
b8891f8d | 860 | 0, /* bitsize */ |
0a1b45a2 | 861 | false, /* pc_relative */ |
b8891f8d AJ |
862 | 0, /* bitpos */ |
863 | complain_overflow_dont, /* complain_on_overflow */ | |
864 | NULL, /* special_function */ | |
865 | "R_CKCORE_CALLGRAPH", /* name */ | |
0a1b45a2 | 866 | false, /* partial_inplace */ |
b8891f8d AJ |
867 | 0x0, /* src_mask */ |
868 | 0x0, /* dst_mask */ | |
0a1b45a2 | 869 | true), /* pcrel_offset */ |
b8891f8d AJ |
870 | |
871 | /* 62: IRELATIVE*/ | |
5d0feb98 | 872 | HOWTO (R_CKCORE_IRELATIVE,0,0,0,0,0,0,0,"R_CKCORE_IRELATIVE",0,0,0,0), |
b8891f8d AJ |
873 | |
874 | /* 63: for bloop instruction */ | |
875 | HOWTO (R_CKCORE_PCREL_BLOOP_IMM4BY4, /* type */ | |
876 | 1, /* rightshift */ | |
c94cb026 | 877 | 4, /* size */ |
b8891f8d AJ |
878 | 4, /* bitsize */ |
879 | 1, /* pc_relative */ | |
880 | 0, /* bitpos */ | |
881 | complain_overflow_signed, /* complain_on_overflow */ | |
882 | bfd_elf_generic_reloc, /* special_function */ | |
883 | "R_CKCORE_PCREL_BLOOP_IMM4BY4", /* name */ | |
0a1b45a2 | 884 | false, /* partial_inplace */ |
b8891f8d AJ |
885 | 0x0, /* src_mask */ |
886 | 0xf, /* dst_mask */ | |
0a1b45a2 | 887 | true), /* pcrel_offset */ |
b8891f8d AJ |
888 | /* 64: for bloop instruction */ |
889 | HOWTO (R_CKCORE_PCREL_BLOOP_IMM12BY4, /* type */ | |
890 | 1, /* rightshift */ | |
c94cb026 | 891 | 4, /* size */ |
b8891f8d AJ |
892 | 12, /* bitsize */ |
893 | 1, /* pc_relative */ | |
894 | 0, /* bitpos */ | |
895 | complain_overflow_signed, /* complain_on_overflow */ | |
896 | bfd_elf_generic_reloc, /* special_function */ | |
897 | "R_CKCORE_PCREL_BLOOP_IMM12BY4", /* name */ | |
0a1b45a2 | 898 | false, /* partial_inplace */ |
b8891f8d AJ |
899 | 0x0, /* src_mask */ |
900 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 901 | true), /* pcrel_offset */ |
b8891f8d AJ |
902 | |
903 | ||
904 | }; | |
905 | ||
906 | ||
907 | /* Whether GOT overflow checking is needed. */ | |
908 | static int check_got_overflow = 0; | |
909 | ||
910 | /* Whether the target 32 bits is forced so that the high | |
911 | 16 bits is at the low address. */ | |
912 | static int need_reverse_bits; | |
913 | ||
914 | /* Used for relaxation. See csky_relocate_contents. */ | |
915 | static bfd_vma read_content_substitute; | |
916 | ||
917 | /* NOTICE! | |
918 | The way the following two look-up functions work demands | |
919 | that BFD_RELOC_CKCORE_xxx are defined contiguously. */ | |
920 | ||
921 | static reloc_howto_type * | |
922 | csky_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
923 | bfd_reloc_code_real_type code) | |
924 | { | |
925 | int csky_code = code - BFD_RELOC_CKCORE_NONE; | |
926 | ||
927 | if (csky_code < 0 || csky_code >= R_CKCORE_MAX) | |
928 | { | |
929 | switch (code) | |
930 | { | |
931 | case BFD_RELOC_NONE: | |
932 | csky_code = R_CKCORE_NONE; | |
933 | break; | |
934 | case BFD_RELOC_32: | |
935 | csky_code = R_CKCORE_ADDR32; | |
936 | break; | |
937 | case BFD_RELOC_32_PCREL: | |
938 | csky_code = R_CKCORE_PCREL32; | |
939 | break; | |
940 | case BFD_RELOC_VTABLE_INHERIT: | |
941 | csky_code = R_CKCORE_GNU_VTINHERIT; | |
942 | break; | |
943 | case BFD_RELOC_VTABLE_ENTRY: | |
944 | csky_code = R_CKCORE_GNU_VTENTRY; | |
945 | break; | |
946 | case BFD_RELOC_RVA: | |
947 | csky_code = R_CKCORE_RELATIVE; | |
948 | break; | |
949 | default: | |
950 | return (reloc_howto_type *)NULL; | |
951 | } | |
952 | } | |
953 | /* Note: when adding csky bfd reloc types in bfd-in2.h | |
954 | and csky elf reloc types in elf/csky.h, | |
955 | the order of the two reloc type tables should be consistent. */ | |
956 | return &csky_elf_howto_table[csky_code]; | |
957 | } | |
958 | ||
959 | static reloc_howto_type * | |
960 | csky_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
961 | const char *r_name) | |
962 | { | |
963 | unsigned int i; | |
964 | for (i = 0; i < R_CKCORE_MAX; i++) | |
965 | if (strcasecmp (csky_elf_howto_table[i].name, r_name) == 0) | |
966 | return &csky_elf_howto_table[i]; | |
967 | return NULL; | |
968 | } | |
969 | ||
970 | static reloc_howto_type * | |
971 | elf32_csky_howto_from_type (unsigned int r_type) | |
972 | { | |
973 | if (r_type < R_CKCORE_MAX) | |
974 | return &csky_elf_howto_table[r_type]; | |
975 | else | |
976 | return NULL; | |
977 | } | |
978 | ||
0a1b45a2 | 979 | static bool |
b8891f8d AJ |
980 | csky_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
981 | arelent *cache_ptr, | |
982 | Elf_Internal_Rela *dst) | |
983 | { | |
984 | unsigned int r_type; | |
985 | ||
986 | r_type = ELF32_R_TYPE (dst->r_info); | |
987 | cache_ptr->howto = elf32_csky_howto_from_type (r_type); | |
988 | if (cache_ptr->howto == NULL) | |
989 | { | |
990 | /* xgettext:c-format */ | |
991 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
992 | abfd, r_type); | |
993 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 994 | return false; |
b8891f8d | 995 | } |
0a1b45a2 | 996 | return true; |
b8891f8d AJ |
997 | } |
998 | ||
999 | /* The Global Offset Table max size. */ | |
1000 | #define GOT_MAX_SIZE 0xFFFF8 | |
1001 | ||
1002 | /* The name of the dynamic interpreter. This is put in the .interp | |
1003 | section. */ | |
1004 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1005 | ||
1006 | /* The size in bytes of an entry in the procedure linkage table. */ | |
1007 | #define PLT_ENTRY_SIZE 12 | |
1008 | #define PLT_ENTRY_SIZE_P 16 | |
1009 | ||
1010 | /* The first entry in a procedure linkage table looks like | |
1011 | this. It is set up so that any shared library function that is | |
1012 | called before the relocation has been set up calls the dynamic | |
1013 | linker first. */ | |
1014 | static const bfd_vma csky_elf_plt_entry_v2[PLT_ENTRY_SIZE / 4] = | |
1015 | { | |
1016 | 0xd99c2002, /* ldw r12, (gb, 8) */ | |
1017 | 0xea0d0000, /* movi r13,offset */ | |
1018 | 0xe8cc0000 /* jmp r12 */ | |
1019 | }; | |
1020 | ||
1021 | static const bfd_vma csky_elf_plt_entry_v1[PLT_ENTRY_SIZE / 2 ] = | |
1022 | { | |
1023 | 0x25f0, /* subi r0, 32 */ | |
1024 | 0x9200, /* stw r2, (r0, 0) */ | |
1025 | 0x9310, /* stw r3, (r0, 4) */ | |
1026 | 0x822e, /* ldw r2, (gb, 8) */ | |
1027 | 0x7301, /* lrw r3, #offset */ | |
1028 | 0x00c2, /* jmp r2 */ | |
1029 | }; | |
1030 | ||
1031 | /* Branch stub support. */ | |
1032 | ||
1033 | enum stub_insn_type | |
1034 | { | |
1035 | INSN16, | |
1036 | INSN32, | |
1037 | DATA_TYPE | |
1038 | }; | |
1039 | ||
0a1b45a2 | 1040 | bool use_branch_stub = true; |
b8891f8d AJ |
1041 | typedef struct |
1042 | { | |
1043 | bfd_vma data; | |
1044 | enum stub_insn_type type; | |
1045 | unsigned int r_type; | |
1046 | int reloc_addend; | |
1047 | } insn_sequence; | |
1048 | ||
1049 | static const insn_sequence elf32_csky_stub_long_branch[] = | |
1050 | { | |
1051 | {0xea8d0002, INSN32, R_CKCORE_NONE, 0x0}, /* lrw t1,[pc+8] */ | |
1052 | {0x7834, INSN16, R_CKCORE_NONE, 0x0}, /* jmp t1 */ | |
1053 | {0x6c03, INSN16, R_CKCORE_NONE, 0x0}, /* nop */ | |
1054 | {0x0, DATA_TYPE, R_CKCORE_ADDR32, 0x0} /* .long addr */ | |
1055 | }; | |
1056 | ||
1057 | static const insn_sequence elf32_csky_stub_long_branch_jmpi[] = | |
1058 | { | |
1059 | {0xeac00001, INSN32, R_CKCORE_NONE, 0x0}, /* jmpi [pc+4] */ | |
1060 | {0x0, DATA_TYPE, R_CKCORE_ADDR32, 0x0} /* .long addr */ | |
1061 | }; | |
1062 | ||
1063 | /* The bsr instruction offset limit. */ | |
1064 | #define BSR_MAX_FWD_BRANCH_OFFSET (((1 << 25) - 1) << 1) | |
1065 | #define BSR_MAX_BWD_BRANCH_OFFSET (-(1 << 26)) | |
1066 | ||
1067 | #define STUB_SUFFIX ".stub" | |
1068 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1069 | ||
1070 | /* One entry per long/short branch stub defined above. */ | |
1071 | #define DEF_STUBS \ | |
1072 | DEF_STUB(long_branch) \ | |
1073 | DEF_STUB(long_branch_jmpi) | |
1074 | ||
1075 | #define DEF_STUB(x) csky_stub_##x, | |
1076 | enum elf32_csky_stub_type | |
1077 | { | |
1078 | csky_stub_none, | |
1079 | DEF_STUBS | |
1080 | }; | |
1081 | #undef DEF_STUB | |
1082 | ||
1083 | typedef struct | |
1084 | { | |
1085 | const insn_sequence* template_sequence; | |
1086 | int template_size; | |
1087 | } stub_def; | |
1088 | ||
1089 | #define DEF_STUB(x) {elf32_csky_stub_##x, ARRAY_SIZE(elf32_csky_stub_##x)}, | |
1090 | static const stub_def stub_definitions[] = { | |
1091 | {NULL, 0}, | |
1092 | DEF_STUBS | |
1093 | }; | |
1094 | ||
1095 | /* The size of the thread control block. */ | |
1096 | #define TCB_SIZE 8 | |
1097 | ||
1098 | struct csky_elf_obj_tdata | |
1099 | { | |
1100 | struct elf_obj_tdata root; | |
1101 | ||
1102 | /* tls_type for each local got entry. */ | |
1103 | char *local_got_tls_type; | |
1104 | }; | |
1105 | ||
1106 | #define csky_elf_local_got_tls_type(bfd) \ | |
1107 | (csky_elf_tdata (bfd)->local_got_tls_type) | |
1108 | ||
1109 | #define csky_elf_tdata(bfd) \ | |
1110 | ((struct csky_elf_obj_tdata *) (bfd)->tdata.any) | |
1111 | ||
1112 | struct elf32_csky_stub_hash_entry | |
1113 | { | |
1114 | /* Base hash table entry structure. */ | |
1115 | struct bfd_hash_entry root; | |
1116 | ||
1117 | /* The stub section. */ | |
1118 | asection *stub_sec; | |
1119 | ||
1120 | /* Offset within stub_sec of the beginning of this stub. */ | |
1121 | bfd_vma stub_offset; | |
1122 | ||
1123 | /* Given the symbol's value and its section we can determine its final | |
1124 | value when building the stubs (so the stub knows where to jump). */ | |
1125 | bfd_vma target_value; | |
1126 | asection *target_section; | |
1127 | ||
1128 | /* Offset to apply to relocation referencing target_value. */ | |
1129 | bfd_vma target_addend; | |
1130 | ||
1131 | /* The stub type. */ | |
1132 | enum elf32_csky_stub_type stub_type; | |
1133 | /* Its encoding size in bytes. */ | |
1134 | int stub_size; | |
1135 | /* Its template. */ | |
1136 | const insn_sequence *stub_template; | |
1137 | /* The size of the template (number of entries). */ | |
1138 | int stub_template_size; | |
1139 | ||
1140 | /* The symbol table entry, if any, that this was derived from. */ | |
1141 | struct csky_elf_link_hash_entry *h; | |
1142 | ||
1143 | /* Destination symbol type. */ | |
1144 | unsigned char st_type; | |
1145 | ||
1146 | /* Where this stub is being called from, or, in the case of combined | |
1147 | stub sections, the first input section in the group. */ | |
1148 | asection *id_sec; | |
1149 | ||
1150 | /* The name for the local symbol at the start of this stub. The | |
1151 | stub name in the hash table has to be unique; this does not, so | |
1152 | it can be friendlier. */ | |
1153 | char *output_name; | |
1154 | }; | |
1155 | ||
1156 | #define csky_stub_hash_lookup(table, string, create, copy) \ | |
1157 | ((struct elf32_csky_stub_hash_entry *) \ | |
1158 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
1159 | ||
1160 | /* C-SKY ELF linker hash entry. */ | |
1161 | struct csky_elf_link_hash_entry | |
1162 | { | |
1163 | struct elf_link_hash_entry elf; | |
1164 | int plt_refcount; | |
1165 | /* For sub jsri2bsr relocs count. */ | |
1166 | int jsri2bsr_refcount; | |
b8891f8d AJ |
1167 | |
1168 | #define GOT_UNKNOWN 0 | |
1169 | #define GOT_NORMAL 1 | |
1170 | #define GOT_TLS_GD 2 | |
1171 | #define GOT_TLS_IE 4 | |
1172 | ||
1173 | unsigned char tls_type; | |
1174 | ||
1175 | /* A pointer to the most recently used stub hash entry against this | |
1176 | symbol. */ | |
1177 | struct elf32_csky_stub_hash_entry *stub_cache; | |
1178 | }; | |
1179 | ||
1180 | /* Traverse an C-SKY ELF linker hash table. */ | |
0a1b45a2 AM |
1181 | #define csky_elf_link_hash_traverse(table, func, info) \ |
1182 | (elf_link_hash_traverse \ | |
1183 | (&(table)->root, \ | |
f3b9cfd1 | 1184 | (bool (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b8891f8d AJ |
1185 | (info))) |
1186 | ||
1187 | /* Get the C-SKY ELF linker hash table from a link_info structure. */ | |
0f55320b AM |
1188 | #define csky_elf_hash_table(p) \ |
1189 | ((is_elf_hash_table ((p)->hash) \ | |
1190 | && elf_hash_table_id (elf_hash_table (p)) == CSKY_ELF_DATA) \ | |
1191 | ? (struct csky_elf_link_hash_table *) (p)->hash : NULL) | |
b8891f8d AJ |
1192 | |
1193 | #define csky_elf_hash_entry(ent) ((struct csky_elf_link_hash_entry*)(ent)) | |
1194 | ||
1195 | /* Array to keep track of which stub sections have been created, and | |
1196 | information on stub grouping. */ | |
1197 | struct map_stub | |
1198 | { | |
1199 | /* This is the section to which stubs in the group will be | |
1200 | attached. */ | |
1201 | asection *link_sec; | |
1202 | /* The stub section. */ | |
1203 | asection *stub_sec; | |
1204 | }; | |
1205 | ||
1206 | /* C-SKY ELF linker hash table. */ | |
1207 | struct csky_elf_link_hash_table | |
1208 | { | |
1209 | struct elf_link_hash_table elf; | |
1210 | ||
b8891f8d AJ |
1211 | /* Data for R_CKCORE_TLS_LDM32 relocations. */ |
1212 | union | |
1213 | { | |
1214 | bfd_signed_vma refcount; | |
1215 | bfd_vma offset; | |
1216 | } tls_ldm_got; | |
1217 | ||
1218 | /* The stub hash table. */ | |
1219 | struct bfd_hash_table stub_hash_table; | |
1220 | ||
1221 | /* Linker stub bfd. */ | |
1222 | bfd *stub_bfd; | |
1223 | ||
1224 | /* Linker call-backs. */ | |
1225 | asection * (*add_stub_section) (const char *, asection *); | |
1226 | void (*layout_sections_again) (void); | |
1227 | ||
1228 | /* Array to keep track of which stub sections have been created, and | |
1229 | * information on stub grouping. */ | |
1230 | struct map_stub *stub_group; | |
1231 | ||
1232 | /* Number of elements in stub_group. */ | |
1233 | unsigned int top_id; | |
1234 | ||
1235 | /* Assorted information used by elf32_csky_size_stubs. */ | |
1236 | unsigned int bfd_count; | |
1237 | unsigned int top_index; | |
1238 | asection **input_list; | |
1239 | }; | |
1240 | ||
1241 | /* We can't change vectors in the bfd target which will apply to | |
1242 | data sections, however we only do this to the text sections. */ | |
1243 | ||
1244 | static bfd_vma | |
1245 | csky_get_insn_32 (bfd *input_bfd, | |
1246 | bfd_byte *location) | |
1247 | { | |
1248 | if (bfd_big_endian (input_bfd)) | |
1249 | return bfd_get_32 (input_bfd, location); | |
1250 | else | |
1251 | return (bfd_get_16 (input_bfd, location) << 16 | |
1252 | | bfd_get_16 (input_bfd, location + 2)); | |
1253 | } | |
1254 | ||
1255 | static void | |
1256 | csky_put_insn_32 (bfd *input_bfd, | |
1257 | bfd_vma x, | |
1258 | bfd_byte *location) | |
1259 | { | |
1260 | if (bfd_big_endian (input_bfd)) | |
1261 | bfd_put_32 (input_bfd, x, location); | |
1262 | else | |
1263 | { | |
1264 | bfd_put_16 (input_bfd, x >> 16, location); | |
1265 | bfd_put_16 (input_bfd, x & 0xffff, location + 2); | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | /* Find or create a stub section. Returns a pointer to the stub section, and | |
1270 | the section to which the stub section will be attached (in *LINK_SEC_P). | |
1271 | LINK_SEC_P may be NULL. */ | |
1272 | ||
1273 | static asection * | |
1274 | elf32_csky_create_or_find_stub_sec (asection **link_sec_p, asection *section, | |
1275 | struct csky_elf_link_hash_table *htab) | |
1276 | { | |
1277 | asection *link_sec; | |
1278 | asection *stub_sec; | |
1279 | ||
1280 | link_sec = htab->stub_group[section->id].link_sec; | |
1281 | stub_sec = htab->stub_group[section->id].stub_sec; | |
1282 | if (stub_sec == NULL) | |
1283 | { | |
1284 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
1285 | if (stub_sec == NULL) | |
1286 | { | |
1287 | size_t namelen; | |
1288 | bfd_size_type len; | |
1289 | char *s_name; | |
1290 | ||
1291 | namelen = strlen (link_sec->name); | |
1292 | len = namelen + sizeof (STUB_SUFFIX); | |
1293 | s_name = bfd_alloc (htab->stub_bfd, len); | |
1294 | if (s_name == NULL) | |
1295 | return NULL; | |
1296 | ||
1297 | memcpy (s_name, link_sec->name, namelen); | |
1298 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
1299 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
1300 | if (stub_sec == NULL) | |
1301 | return NULL; | |
1302 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
1303 | } | |
1304 | htab->stub_group[section->id].stub_sec = stub_sec; | |
1305 | } | |
1306 | ||
1307 | if (link_sec_p) | |
1308 | *link_sec_p = link_sec; | |
1309 | ||
1310 | return stub_sec; | |
1311 | } | |
1312 | ||
1313 | /* Build a name for an entry in the stub hash table. */ | |
1314 | ||
1315 | static char * | |
1316 | elf32_csky_stub_name (const asection *input_section, | |
1317 | const asection *sym_sec, | |
1318 | const struct csky_elf_link_hash_entry *hash, | |
1319 | const Elf_Internal_Rela *rel) | |
1320 | { | |
1321 | char *stub_name; | |
1322 | bfd_size_type len; | |
1323 | ||
1324 | if (hash) | |
1325 | { | |
1326 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; | |
1327 | stub_name = bfd_malloc (len); | |
1328 | if (stub_name != NULL) | |
1329 | sprintf (stub_name, "%08x_%s+%x", | |
1330 | input_section->id & 0xffffffff, | |
1331 | hash->elf.root.root.string, | |
1332 | (int) rel->r_addend & 0xffffffff); | |
1333 | } | |
1334 | else | |
1335 | { | |
1336 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; | |
1337 | stub_name = bfd_malloc (len); | |
1338 | if (stub_name != NULL) | |
1339 | sprintf (stub_name, "%08x_%x:%x+%x", | |
1340 | input_section->id & 0xffffffff, | |
1341 | sym_sec->id & 0xffffffff, | |
1342 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
1343 | (int) rel->r_addend & 0xffffffff); | |
1344 | } | |
1345 | ||
1346 | return stub_name; | |
1347 | } | |
1348 | ||
1349 | /* Determine the type of stub needed, if any, for a call. */ | |
1350 | ||
1351 | static enum elf32_csky_stub_type | |
1352 | csky_type_of_stub (struct bfd_link_info *info, | |
1353 | asection *input_sec, | |
1354 | const Elf_Internal_Rela *rel, | |
1355 | unsigned char st_type, | |
1356 | struct csky_elf_link_hash_entry *hash, | |
1357 | bfd_vma destination, | |
1358 | asection *sym_sec ATTRIBUTE_UNUSED, | |
1359 | bfd *input_bfd ATTRIBUTE_UNUSED, | |
1360 | const char *name ATTRIBUTE_UNUSED) | |
1361 | { | |
1362 | bfd_vma location; | |
1363 | bfd_signed_vma branch_offset; | |
1364 | unsigned int r_type; | |
1365 | enum elf32_csky_stub_type stub_type = csky_stub_none; | |
1366 | struct elf_link_hash_entry * h = &hash->elf; | |
1367 | ||
1368 | /* We don't know the actual type of destination in case it is of | |
1369 | type STT_SECTION: give up. */ | |
1370 | if (st_type == STT_SECTION) | |
1371 | return stub_type; | |
1372 | ||
1373 | location = (input_sec->output_offset | |
1374 | + input_sec->output_section->vma | |
1375 | + rel->r_offset); | |
1376 | ||
1377 | branch_offset = (bfd_signed_vma)(destination - location); | |
1378 | r_type = ELF32_R_TYPE (rel->r_info); | |
1379 | if (r_type == R_CKCORE_PCREL_IMM26BY2 | |
1380 | && ((h != NULL | |
1381 | && ((h->def_dynamic && !h->def_regular) | |
1382 | || (bfd_link_pic (info) | |
1383 | && h->root.type == bfd_link_hash_defweak))) | |
1384 | || branch_offset > BSR_MAX_FWD_BRANCH_OFFSET | |
1385 | || branch_offset < BSR_MAX_BWD_BRANCH_OFFSET)) | |
1386 | { | |
1387 | if (bfd_csky_arch (info->output_bfd) == CSKY_ARCH_810 | |
1388 | || bfd_csky_arch (info->output_bfd) == CSKY_ARCH_807) | |
1389 | stub_type = csky_stub_long_branch_jmpi; | |
1390 | else | |
1391 | stub_type = csky_stub_long_branch; | |
1392 | } | |
1393 | ||
1394 | return stub_type; | |
1395 | } | |
1396 | ||
1397 | /* Create an entry in an C-SKY ELF linker hash table. */ | |
1398 | ||
1399 | static struct bfd_hash_entry * | |
1400 | csky_elf_link_hash_newfunc (struct bfd_hash_entry * entry, | |
1401 | struct bfd_hash_table * table, | |
1402 | const char * string) | |
1403 | { | |
1404 | struct csky_elf_link_hash_entry * ret = | |
1405 | (struct csky_elf_link_hash_entry *) entry; | |
1406 | ||
1407 | /* Allocate the structure if it has not already been allocated by a | |
1408 | subclass. */ | |
1409 | if (ret == NULL) | |
1410 | { | |
1411 | ret = (struct csky_elf_link_hash_entry *) | |
1412 | bfd_hash_allocate (table, | |
1413 | sizeof (struct csky_elf_link_hash_entry)); | |
1414 | if (ret == NULL) | |
1415 | return (struct bfd_hash_entry *) ret; | |
1416 | } | |
1417 | ||
1418 | /* Call the allocation method of the superclass. */ | |
1419 | ret = ((struct csky_elf_link_hash_entry *) | |
1420 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *)ret, | |
1421 | table, string)); | |
1422 | if (ret != NULL) | |
1423 | { | |
1424 | struct csky_elf_link_hash_entry *eh; | |
1425 | ||
1426 | eh = (struct csky_elf_link_hash_entry *) ret; | |
b8891f8d AJ |
1427 | eh->plt_refcount = 0; |
1428 | eh->jsri2bsr_refcount = 0; | |
1429 | eh->tls_type = GOT_NORMAL; | |
1430 | ret->stub_cache = NULL; | |
1431 | } | |
1432 | ||
1433 | return (struct bfd_hash_entry *) ret; | |
1434 | } | |
1435 | ||
1436 | /* Initialize an entry in the stub hash table. */ | |
1437 | ||
1438 | static struct bfd_hash_entry * | |
1439 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
1440 | struct bfd_hash_table *table, | |
1441 | const char *string) | |
1442 | { | |
1443 | /* Allocate the structure if it has not already been allocated by a | |
1444 | subclass. */ | |
1445 | if (entry == NULL) | |
1446 | { | |
1447 | entry = ((struct bfd_hash_entry *) | |
1448 | bfd_hash_allocate (table, | |
1449 | sizeof (struct elf32_csky_stub_hash_entry))); | |
1450 | if (entry == NULL) | |
1451 | return entry; | |
1452 | } | |
1453 | ||
1454 | /* Call the allocation method of the superclass. */ | |
1455 | entry = bfd_hash_newfunc (entry, table, string); | |
1456 | if (entry != NULL) | |
1457 | { | |
1458 | struct elf32_csky_stub_hash_entry *eh; | |
1459 | ||
1460 | /* Initialize the local fields. */ | |
1461 | eh = (struct elf32_csky_stub_hash_entry *) entry; | |
1462 | eh->stub_sec = NULL; | |
1463 | eh->stub_offset = 0; | |
1464 | eh->target_value = 0; | |
1465 | eh->target_section = NULL; | |
1466 | eh->target_addend = 0; | |
1467 | eh->stub_type = csky_stub_none; | |
1468 | eh->stub_size = 0; | |
1469 | eh->stub_template = NULL; | |
1470 | eh->stub_template_size = -1; | |
1471 | eh->h = NULL; | |
1472 | eh->id_sec = NULL; | |
1473 | eh->output_name = NULL; | |
1474 | } | |
1475 | ||
1476 | return entry; | |
1477 | } | |
1478 | ||
1479 | /* Free the derived linker hash table. */ | |
1480 | ||
1481 | static void | |
1482 | csky_elf_link_hash_table_free (bfd *obfd) | |
1483 | { | |
1484 | struct csky_elf_link_hash_table *ret | |
1485 | = (struct csky_elf_link_hash_table *) obfd->link.hash; | |
1486 | ||
1487 | bfd_hash_table_free (&ret->stub_hash_table); | |
1488 | _bfd_elf_link_hash_table_free (obfd); | |
1489 | } | |
1490 | ||
1491 | /* Create an CSKY elf linker hash table. */ | |
1492 | ||
1493 | static struct bfd_link_hash_table * | |
1494 | csky_elf_link_hash_table_create (bfd *abfd) | |
1495 | { | |
1496 | struct csky_elf_link_hash_table *ret; | |
986f0783 | 1497 | size_t amt = sizeof (struct csky_elf_link_hash_table); |
b8891f8d AJ |
1498 | |
1499 | ret = (struct csky_elf_link_hash_table*) bfd_zmalloc (amt); | |
1500 | if (ret == NULL) | |
1501 | return NULL; | |
1502 | ||
1503 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, | |
1504 | csky_elf_link_hash_newfunc, | |
1505 | sizeof (struct csky_elf_link_hash_entry), | |
1506 | CSKY_ELF_DATA)) | |
1507 | { | |
1508 | free (ret); | |
1509 | return NULL; | |
1510 | } | |
1511 | ||
1512 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
1513 | sizeof (struct elf32_csky_stub_hash_entry))) | |
1514 | { | |
1515 | free (ret); | |
1516 | return NULL; | |
1517 | } | |
1518 | ret->elf.root.hash_table_free = csky_elf_link_hash_table_free; | |
1519 | return &ret->elf.root; | |
1520 | } | |
1521 | ||
0a1b45a2 | 1522 | static bool |
b8891f8d AJ |
1523 | csky_elf_mkobject (bfd *abfd) |
1524 | { | |
1525 | return bfd_elf_allocate_object (abfd, sizeof (struct csky_elf_obj_tdata), | |
1526 | CSKY_ELF_DATA); | |
1527 | } | |
1528 | ||
1529 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1530 | regular object. The current definition is in some section of the | |
1531 | dynamic object, but we're not including those sections. We have to | |
1532 | change the definition to something the rest of the link can | |
1533 | understand. */ | |
1534 | ||
0a1b45a2 | 1535 | static bool |
b8891f8d AJ |
1536 | csky_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
1537 | struct elf_link_hash_entry *h) | |
1538 | { | |
1539 | struct csky_elf_link_hash_entry *eh; | |
1540 | struct csky_elf_link_hash_table *htab; | |
1541 | asection *srel; | |
1542 | asection *s; | |
1543 | eh = (struct csky_elf_link_hash_entry *)h; | |
1544 | if (eh == NULL) | |
0a1b45a2 | 1545 | return false; |
b8891f8d AJ |
1546 | |
1547 | htab = csky_elf_hash_table (info); | |
1548 | if (htab == NULL) | |
0a1b45a2 | 1549 | return false; |
b8891f8d AJ |
1550 | |
1551 | /* Clear jsri2bsr_refcount, if creating shared library files. */ | |
1552 | if (bfd_link_pic (info) && eh->jsri2bsr_refcount > 0) | |
1553 | eh->jsri2bsr_refcount = 0; | |
1554 | ||
1555 | /* If there is a function, put it in the procedure linkage table. We | |
1556 | will fill in the contents of the procedure linkage table later. */ | |
1557 | if (h->needs_plt) | |
1558 | { | |
1559 | /* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the | |
1560 | symbol binds locally. */ | |
1561 | if (h->plt.refcount <= 0 | |
1562 | || (h->type != STT_GNU_IFUNC | |
1563 | && (SYMBOL_CALLS_LOCAL (info, h) | |
1564 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1565 | && h->root.type == bfd_link_hash_undefweak)))) | |
1566 | ||
1567 | { | |
1568 | /* This case can occur if we saw a PLT32 reloc in an input | |
1569 | file, but the symbol was never referred to by a dynamic | |
1570 | object, or if all references were garbage collected. In | |
1571 | such a case, we don't actually need to build a procedure | |
1572 | linkage table, and we can just do a PC32 reloc instead. */ | |
1573 | h->plt.offset = (bfd_vma) -1; | |
1574 | h->needs_plt = 0; | |
1575 | if (h->got.refcount == 0) | |
1576 | h->got.refcount += 1; | |
1577 | } | |
1578 | else if (h->got.refcount != 0) | |
1579 | { | |
1580 | h->got.refcount -= eh->plt_refcount; | |
1581 | eh->plt_refcount = 0; | |
1582 | } | |
0a1b45a2 | 1583 | return true; |
b8891f8d AJ |
1584 | } |
1585 | else | |
1586 | /* It's possible that we incorrectly decided a .plt reloc was | |
1587 | needed for an R_CKCORE_PC32 or similar reloc to a non-function | |
1588 | sym in check_relocs. We can't decide accurately between function | |
1589 | and non-function syms in check_relocs; objects loaded later in | |
1590 | the link may change h->type. So fix it now. */ | |
1591 | h->plt.offset = (bfd_vma) -1; | |
1592 | ||
1593 | /* If this is a weak symbol, and there is a real definition, the | |
1594 | processor independent code will have arranged for us to see the | |
1595 | real definition first, and we can just use the same value. */ | |
1596 | if (h->is_weakalias) | |
1597 | { | |
1598 | struct elf_link_hash_entry *def = weakdef (h); | |
1599 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1600 | h->root.u.def.section = def->root.u.def.section; | |
1601 | h->root.u.def.value = def->root.u.def.value; | |
0a1b45a2 | 1602 | return true; |
b8891f8d AJ |
1603 | } |
1604 | ||
1605 | /* If there are no non-GOT references, we do not need a copy | |
1606 | relocation. */ | |
1607 | if (!h->non_got_ref) | |
0a1b45a2 | 1608 | return true; |
b8891f8d AJ |
1609 | |
1610 | /* This is a reference to a symbol defined by a dynamic object which | |
1611 | is not a function. */ | |
1612 | ||
1613 | /* If we are creating a shared library, we must presume that the | |
1614 | only references to the symbol are via the global offset table. | |
1615 | For such cases we need not do anything here; the relocations will | |
1616 | be handled correctly by relocate_section. */ | |
1617 | if (bfd_link_pic (info) || htab->elf.is_relocatable_executable) | |
0a1b45a2 | 1618 | return true; |
b8891f8d AJ |
1619 | |
1620 | /* We must allocate the symbol in our .dynbss section, which will | |
1621 | become part of the .bss section of the executable. There will be | |
1622 | an entry for this symbol in the .dynsym section. The dynamic | |
1623 | object will contain position independent code, so all references | |
1624 | from the dynamic object to this symbol will go through the global | |
1625 | offset table. The dynamic linker will use the .dynsym entry to | |
1626 | determine the address it must put in the global offset table, so | |
1627 | both the dynamic object and the regular object will refer to the | |
1628 | same memory location for the variable. */ | |
1629 | /* We must generate a R_CKCORE_COPY reloc to tell the dynamic linker to | |
1630 | copy the initial value out of the dynamic object and into the | |
1631 | runtime process image. We need to remember the offset into the | |
1632 | .rela.bss section we are going to use. */ | |
1633 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) | |
1634 | { | |
1635 | s = htab->elf.sdynrelro; | |
1636 | srel = htab->elf.sreldynrelro; | |
1637 | } | |
1638 | else | |
1639 | { | |
1640 | s = htab->elf.sdynbss; | |
1641 | srel = htab->elf.srelbss; | |
1642 | } | |
1643 | if (info->nocopyreloc == 0 | |
1644 | && (h->root.u.def.section->flags & SEC_ALLOC) != 0 | |
1645 | && h->size != 0 | |
1646 | && srel != NULL | |
1647 | && s != NULL) | |
1648 | { | |
1649 | srel->size += sizeof (Elf32_External_Rela); | |
1650 | h->needs_copy = 1; | |
1651 | return _bfd_elf_adjust_dynamic_copy (info, h, s); | |
1652 | } | |
1653 | ||
1654 | h->non_got_ref = 0; | |
0a1b45a2 | 1655 | return true; |
b8891f8d AJ |
1656 | } |
1657 | ||
1658 | /* Allocate space in .plt, .got and associated reloc sections for | |
1659 | dynamic relocs. */ | |
1660 | ||
0a1b45a2 | 1661 | static bool |
f3b9cfd1 | 1662 | csky_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
b8891f8d AJ |
1663 | { |
1664 | struct bfd_link_info *info; | |
1665 | struct csky_elf_link_hash_table *htab; | |
1666 | struct csky_elf_link_hash_entry *eh; | |
1667 | struct elf_dyn_relocs *p; | |
1668 | ||
1669 | /* For indirect case, such as _ZdlPv to _ZdlPv@@GLIBCXX_3.4. */ | |
1670 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 1671 | return true; |
b8891f8d AJ |
1672 | |
1673 | if (h->root.type == bfd_link_hash_warning) | |
1674 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1675 | ||
1676 | ||
1677 | info = (struct bfd_link_info *) inf; | |
1678 | htab = csky_elf_hash_table (info); | |
1679 | if (htab == NULL) | |
0a1b45a2 | 1680 | return false; |
b8891f8d AJ |
1681 | /*TODO: how to deal with weak symbol relocs. */ |
1682 | if ((htab->elf.dynamic_sections_created || h->type == STT_GNU_IFUNC) | |
1683 | && h->plt.refcount > 0) | |
1684 | { | |
1685 | /* Make sure this symbol is output as a dynamic symbol. | |
1686 | Undefined weak syms won't yet be marked as dynamic. */ | |
1687 | if (h->dynindx == -1 && !h->forced_local | |
1688 | && h->root.type == bfd_link_hash_undefweak | |
1689 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 1690 | return false; |
b8891f8d AJ |
1691 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
1692 | { | |
1693 | asection *splt = htab->elf.splt; | |
1694 | ||
1695 | /* If this is the first .plt entry, make room for the special | |
1696 | first entry. */ | |
1697 | if (splt->size == 0) | |
1698 | { | |
1699 | if (bfd_csky_abi (info->output_bfd) == CSKY_ABI_V1) | |
1700 | splt->size += PLT_ENTRY_SIZE_P; | |
1701 | else | |
1702 | splt->size += PLT_ENTRY_SIZE; | |
1703 | } | |
1704 | h->plt.offset = splt->size; | |
1705 | ||
1706 | /* If this symbol is not defined in a regular file, and we are | |
1707 | not generating a shared library, then set the symbol to this | |
1708 | location in the .plt. This is required to make function | |
1709 | pointers compare as equal between the normal executable and | |
1710 | the shared library. */ | |
1711 | if (!bfd_link_pic (info) && !h->def_regular) | |
1712 | { | |
1713 | h->root.u.def.section = splt; | |
1714 | h->root.u.def.value = h->plt.offset; | |
1715 | } | |
1716 | ||
1717 | /* Make room for this entry. */ | |
1718 | if (bfd_csky_abi (info->output_bfd) == CSKY_ABI_V1) | |
1719 | splt->size += PLT_ENTRY_SIZE_P; | |
1720 | else | |
1721 | splt->size += PLT_ENTRY_SIZE; | |
1722 | /* We also need to make an entry in the .rela.plt section. */ | |
1723 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
1724 | ||
1725 | /* We also need to make an entry in the .got.plt section, which | |
1726 | will be placed in the .got section by the linker script. */ | |
1727 | htab->elf.sgotplt->size += 4; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | h->plt.offset = (bfd_vma) -1; | |
1732 | h->needs_plt = 0; | |
1733 | } | |
1734 | } | |
1735 | else | |
1736 | { | |
1737 | h->plt.offset = (bfd_vma) -1; | |
1738 | h->needs_plt = 0; | |
1739 | } | |
1740 | ||
1741 | if (h->got.refcount > 0) | |
1742 | { | |
1743 | asection *sgot; | |
0a1b45a2 | 1744 | bool dyn; |
b8891f8d AJ |
1745 | int indx; |
1746 | ||
1747 | int tls_type = csky_elf_hash_entry (h)->tls_type; | |
1748 | /* Make sure this symbol is output as a dynamic symbol. | |
1749 | Undefined weak syms won't yet be marked as dynamic. */ | |
1750 | if (h->dynindx == -1 && !h->forced_local | |
1751 | && h->root.type == bfd_link_hash_undefweak | |
1752 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 1753 | return false; |
b8891f8d AJ |
1754 | |
1755 | sgot = htab->elf.sgot; | |
1756 | h->got.offset = sgot->size; | |
1757 | BFD_ASSERT (tls_type != GOT_UNKNOWN); | |
1758 | if (tls_type == GOT_NORMAL) | |
1759 | /* Non-TLS symbols need one GOT slot. */ | |
1760 | sgot->size += 4; | |
1761 | else | |
1762 | { | |
1763 | if (tls_type & GOT_TLS_GD) | |
1764 | /* R_CKCORE_TLS_GD32 needs 2 consecutive GOT slots. */ | |
1765 | sgot->size += 8; | |
1766 | if (tls_type & GOT_TLS_IE) | |
1767 | /* R_CKCORE_TLS_IE32 needs one GOT slot. */ | |
1768 | sgot->size += 4; | |
1769 | } | |
1770 | dyn = htab->elf.dynamic_sections_created; | |
1771 | indx = 0; | |
1772 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) | |
1773 | && (! bfd_link_pic (info) || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
1774 | indx = h->dynindx; | |
1775 | ||
1776 | if (tls_type != GOT_NORMAL | |
1777 | && (bfd_link_pic (info) || indx != 0) | |
1778 | && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1779 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
1780 | || h->root.type != bfd_link_hash_undefweak)) | |
1781 | { | |
1782 | if (tls_type & GOT_TLS_IE) | |
1783 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
1784 | if (tls_type & GOT_TLS_GD) | |
1785 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
1786 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
1787 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
1788 | } | |
1789 | else if (((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1790 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
1791 | || h->root.type != bfd_link_hash_undefweak) | |
1792 | && (bfd_link_pic (info) | |
1793 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h) | |
1794 | || h->plt.offset == (bfd_vma) -1)) | |
1795 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
1796 | } | |
1797 | else | |
1798 | h->got.offset = (bfd_vma) -1; | |
1799 | ||
1800 | eh = (struct csky_elf_link_hash_entry *) h; | |
190eb1dd | 1801 | if (h->dyn_relocs == NULL) |
0a1b45a2 | 1802 | return true; |
b8891f8d AJ |
1803 | |
1804 | /* In the shared -Bsymbolic case, discard space allocated for | |
1805 | dynamic pc-relative relocs against symbols which turn out to be | |
1806 | defined in regular objects. For the normal shared case, discard | |
1807 | space for pc-relative relocs that have become local due to symbol | |
1808 | visibility changes. */ | |
1809 | ||
1810 | if (bfd_link_pic (info)) | |
1811 | { | |
1812 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
1813 | { | |
1814 | struct elf_dyn_relocs **pp; | |
1815 | ||
190eb1dd | 1816 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
b8891f8d AJ |
1817 | { |
1818 | p->count -= p->pc_count; | |
1819 | p->pc_count = 0; | |
1820 | if (p->count == 0) | |
1821 | *pp = p->next; | |
1822 | else | |
1823 | pp = &p->next; | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | if (eh->jsri2bsr_refcount | |
1828 | && h->root.type == bfd_link_hash_defined | |
190eb1dd L |
1829 | && h->dyn_relocs != NULL) |
1830 | h->dyn_relocs->count -= eh->jsri2bsr_refcount; | |
b8891f8d AJ |
1831 | |
1832 | /* Also discard relocs on undefined weak syms with non-default | |
1833 | visibility. */ | |
190eb1dd | 1834 | if (h->dyn_relocs != NULL |
b8891f8d AJ |
1835 | && h->root.type == bfd_link_hash_undefweak) |
1836 | { | |
1837 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1838 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 1839 | h->dyn_relocs = NULL; |
b8891f8d AJ |
1840 | |
1841 | /* Make sure undefined weak symbols are output as a dynamic | |
1842 | symbol in PIEs. */ | |
1843 | else if (h->dynindx == -1 | |
1844 | && !h->forced_local | |
1845 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 1846 | return false; |
b8891f8d AJ |
1847 | } |
1848 | ||
1849 | } | |
1850 | else | |
1851 | { | |
1852 | /* For the non-shared case, discard space for relocs against | |
1853 | symbols which turn out to need copy relocs or are not | |
1854 | dynamic. */ | |
1855 | ||
1856 | if (!h->non_got_ref | |
1857 | && ((h->def_dynamic && !h->def_regular) | |
1858 | || (htab->elf.dynamic_sections_created | |
1859 | && (h->root.type == bfd_link_hash_undefweak | |
1860 | || h->root.type == bfd_link_hash_indirect | |
1861 | || h->root.type == bfd_link_hash_undefined)))) | |
1862 | { | |
1863 | /* Make sure this symbol is output as a dynamic symbol. | |
1864 | Undefined weak syms won't yet be marked as dynamic. */ | |
1865 | if (h->dynindx == -1 && !h->forced_local | |
1866 | && h->root.type == bfd_link_hash_undefweak) | |
1867 | { | |
1868 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 1869 | return false; |
b8891f8d AJ |
1870 | } |
1871 | ||
1872 | /* If that succeeded, we know we'll be keeping all the | |
1873 | relocs. */ | |
1874 | if (h->dynindx != -1) | |
1875 | goto keep; | |
1876 | } | |
1877 | ||
190eb1dd | 1878 | h->dyn_relocs = NULL; |
b8891f8d AJ |
1879 | |
1880 | keep: ; | |
1881 | } | |
1882 | ||
1883 | /* Finally, allocate space. */ | |
190eb1dd | 1884 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
b8891f8d AJ |
1885 | { |
1886 | asection *srelgot = htab->elf.srelgot; | |
1887 | srelgot->size += p->count * sizeof (Elf32_External_Rela); | |
1888 | } | |
1889 | ||
0a1b45a2 | 1890 | return true; |
b8891f8d AJ |
1891 | } |
1892 | ||
b8891f8d AJ |
1893 | /* Set the sizes of the dynamic sections. */ |
1894 | ||
0a1b45a2 | 1895 | static bool |
b8891f8d AJ |
1896 | csky_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1897 | struct bfd_link_info *info) | |
1898 | { | |
1899 | struct csky_elf_link_hash_table *htab; | |
1900 | bfd *dynobj; | |
1901 | asection *s; | |
0a1b45a2 | 1902 | bool relocs; |
b8891f8d AJ |
1903 | bfd *ibfd; |
1904 | ||
1905 | htab = csky_elf_hash_table (info); | |
1906 | if (htab == NULL) | |
0a1b45a2 | 1907 | return false; |
b8891f8d AJ |
1908 | dynobj = htab->elf.dynobj; |
1909 | if (dynobj == NULL) | |
0a1b45a2 | 1910 | return false; |
b8891f8d AJ |
1911 | |
1912 | if (htab->elf.dynamic_sections_created) | |
1913 | { | |
1914 | /* Set the contents of the .interp section to the interpreter. */ | |
1915 | if (!bfd_link_pic (info) && !info->nointerp) | |
1916 | { | |
1917 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1918 | BFD_ASSERT (s != NULL); | |
1919 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1920 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1921 | } | |
1922 | } | |
1923 | ||
1924 | /* Set up .got offsets for local syms, and space for local dynamic | |
1925 | relocs. */ | |
1926 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
1927 | { | |
1928 | bfd_signed_vma *local_got_refcounts; | |
1929 | bfd_signed_vma *end_local_got; | |
1930 | bfd_size_type locsymcount; | |
1931 | Elf_Internal_Shdr *symtab_hdr; | |
1932 | asection *srelgot, *sgot; | |
1933 | char *local_tls_type; | |
1934 | ||
1935 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
1936 | continue; | |
1937 | ||
1938 | sgot = htab->elf.sgot; | |
1939 | srelgot = htab->elf.srelgot; | |
1940 | ||
1941 | for (s = ibfd->sections; s != NULL; s = s->next) | |
1942 | { | |
1943 | struct elf_dyn_relocs *p; | |
1944 | ||
3318d800 | 1945 | for (p = elf_section_data (s)->local_dynrel; |
b8891f8d AJ |
1946 | p != NULL; |
1947 | p = p->next) | |
1948 | { | |
1949 | if (!bfd_is_abs_section (p->sec) | |
1950 | && bfd_is_abs_section (p->sec->output_section)) | |
1951 | /* Input section has been discarded, either because | |
1952 | it is a copy of a linkonce section or due to | |
1953 | linker script /DISCARD/, so we'll be discarding | |
1954 | the relocs too. */ | |
1955 | ; | |
1956 | else if (p->count != 0) | |
1957 | { | |
1958 | srelgot->size += p->count * sizeof (Elf32_External_Rela); | |
1959 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
1960 | info->flags |= DF_TEXTREL; | |
1961 | } | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | local_got_refcounts = elf_local_got_refcounts (ibfd); | |
1966 | if (!local_got_refcounts) | |
1967 | continue; | |
1968 | ||
1969 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1970 | locsymcount = symtab_hdr->sh_info; | |
1971 | end_local_got = local_got_refcounts + locsymcount; | |
1972 | local_tls_type = csky_elf_local_got_tls_type (ibfd); | |
1973 | ||
1974 | for (; local_got_refcounts < end_local_got; | |
1975 | ++local_got_refcounts, ++local_tls_type) | |
1976 | { | |
1977 | if (*local_got_refcounts > 0) | |
1978 | { | |
1979 | /* GOT_TLS_GD and GOT_TLS_IE type for TLS, GOT_NORMAL type | |
1980 | for GOT. If output file is shared library, we should output | |
1981 | GOT_TLS_GD type relocation in .rel.got. */ | |
1982 | *local_got_refcounts = sgot->size; | |
1983 | if (*local_tls_type & GOT_TLS_GD) | |
1984 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
1985 | sgot->size += 8; | |
1986 | if (*local_tls_type & GOT_TLS_IE) | |
1987 | sgot->size += 4; | |
1988 | if (*local_tls_type == GOT_NORMAL) | |
1989 | sgot->size += 4; | |
1990 | if (bfd_link_pic (info) || *local_tls_type == GOT_TLS_GD) | |
1991 | srelgot->size += sizeof (Elf32_External_Rela); | |
1992 | } | |
1993 | else | |
1994 | *local_got_refcounts = (bfd_vma) -1; | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | if (htab->tls_ldm_got.refcount > 0) | |
1999 | { | |
2000 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
2001 | for R_CSKY_TLS_LDM32 relocations. */ | |
2002 | htab->tls_ldm_got.offset = htab->elf.sgot->size; | |
2003 | htab->elf.sgot->size += 8; | |
2004 | if (bfd_link_pic (info)) | |
2005 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
2006 | } | |
2007 | else | |
2008 | htab->tls_ldm_got.offset = -1; | |
2009 | ||
2010 | /* Allocate global sym .plt and .got entries, and space for global | |
2011 | sym dynamic relocs. */ | |
f3b9cfd1 | 2012 | elf_link_hash_traverse (&htab->elf, csky_allocate_dynrelocs, info); |
b8891f8d AJ |
2013 | |
2014 | /* Check for GOT overflow. */ | |
2015 | if (check_got_overflow == 1 | |
2016 | && htab->elf.sgot->size + htab->elf.sgotplt->size > GOT_MAX_SIZE) | |
2017 | { | |
2018 | _bfd_error_handler (_("GOT table size out of range")); /* */ | |
0a1b45a2 | 2019 | return false; |
b8891f8d AJ |
2020 | } |
2021 | ||
2022 | /* We now have determined the sizes of the various dynamic sections. | |
2023 | Allocate memory for them. */ | |
0a1b45a2 | 2024 | relocs = false; |
b8891f8d AJ |
2025 | for (s = dynobj->sections; s != NULL; s = s->next) |
2026 | { | |
0a1b45a2 | 2027 | bool strip_section = true; |
b8891f8d AJ |
2028 | |
2029 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2030 | continue; | |
2031 | ||
2032 | if (s == htab->elf.splt | |
2033 | || s == htab->elf.sgot | |
2034 | || s == htab->elf.sgotplt | |
2035 | || s == htab->elf.sdynrelro | |
2036 | || s == htab->elf.sreldynrelro) | |
2037 | { | |
2038 | /* Strip this section if we don't need it; | |
2039 | see the comment below. */ | |
2040 | /* We'd like to strip these sections if they aren't needed, but if | |
2041 | we've exported dynamic symbols from them we must leave them. | |
2042 | It's too late to tell BFD to get rid of the symbols. */ | |
2043 | ||
2044 | if (htab->elf.hplt != NULL) | |
0a1b45a2 | 2045 | strip_section = false; |
b8891f8d | 2046 | } |
08dedd66 | 2047 | else if (startswith (bfd_section_name (s), ".rel") ) |
b8891f8d AJ |
2048 | { |
2049 | if (s->size != 0 ) | |
0a1b45a2 | 2050 | relocs = true; |
b8891f8d AJ |
2051 | |
2052 | /* We use the reloc_count field as a counter if we need | |
2053 | to copy relocs into the output file. */ | |
2054 | s->reloc_count = 0; | |
2055 | } | |
2056 | else | |
2057 | /* It's not one of our sections, so don't allocate space. */ | |
2058 | continue; | |
2059 | ||
2060 | /* Strip this section if we don't need it; see the | |
2061 | comment below. */ | |
2062 | if (s->size == 0) | |
2063 | { | |
2064 | /* If we don't need this section, strip it from the | |
2065 | output file. This is mostly to handle .rel.bss and | |
2066 | .rel.plt. We must create both sections in | |
2067 | create_dynamic_sections, because they must be created | |
2068 | before the linker maps input sections to output | |
2069 | sections. The linker does that before | |
2070 | adjust_dynamic_symbol is called, and it is that | |
2071 | function which decides whether anything needs to go | |
2072 | into these sections. */ | |
2073 | if (strip_section) | |
2074 | s->flags |= SEC_EXCLUDE; | |
2075 | continue; | |
2076 | } | |
2077 | ||
2078 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
2079 | continue; | |
2080 | ||
2081 | /* Allocate memory for the section contents. We use bfd_zalloc | |
2082 | here in case unused entries are not reclaimed before the | |
2083 | section's contents are written out. This should not happen, | |
2084 | but this way if it does, we get a R_CKCORE_NONE reloc instead | |
2085 | of garbage. */ | |
2086 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2087 | if (s->contents == NULL) | |
0a1b45a2 | 2088 | return false; |
b8891f8d AJ |
2089 | } |
2090 | ||
2091 | if (htab->elf.dynamic_sections_created) | |
2c8e3708 L |
2092 | htab->elf.dt_pltgot_required = htab->elf.sgot->size != 0; |
2093 | return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs); | |
b8891f8d AJ |
2094 | } |
2095 | ||
2096 | /* Finish up dynamic symbol handling. We set the contents of various | |
2097 | dynamic sections here. */ | |
2098 | ||
0a1b45a2 | 2099 | static bool |
b8891f8d AJ |
2100 | csky_elf_finish_dynamic_symbol (bfd *output_bfd, |
2101 | struct bfd_link_info *info, | |
2102 | struct elf_link_hash_entry *h, | |
2103 | Elf_Internal_Sym *sym) | |
2104 | { | |
2105 | struct csky_elf_link_hash_table *htab; | |
2106 | ||
2107 | htab = csky_elf_hash_table (info); | |
2108 | if (htab == NULL) | |
0a1b45a2 | 2109 | return false; |
b8891f8d AJ |
2110 | |
2111 | /* Sanity check to make sure no unexpected symbol reaches here. | |
2112 | This matches the test in csky_elf_relocate_section handling | |
2113 | of GOT/PLT entries. */ | |
2114 | BFD_ASSERT (! (h->dynindx == -1 | |
2115 | && !h->forced_local | |
2116 | && h->root.type != bfd_link_hash_undefweak | |
2117 | && bfd_link_pic (info))); | |
2118 | ||
2119 | if (h->plt.offset != (bfd_vma) -1) | |
2120 | { | |
2121 | bfd_vma plt_index; | |
2122 | bfd_vma got_offset; | |
2123 | Elf_Internal_Rela rel; | |
2124 | bfd_byte *loc; | |
2125 | asection *plt, *relplt, *gotplt; | |
2126 | ||
2127 | plt = htab->elf.splt; | |
2128 | relplt = htab->elf.srelplt; | |
2129 | gotplt = htab->elf.sgotplt; | |
2130 | ||
2131 | /* This symbol has an entry in the procedure linkage table. Set | |
2132 | it up. */ | |
2133 | BFD_ASSERT (h->dynindx != -1 | |
2134 | || ((h->forced_local || bfd_link_executable (info)) | |
2135 | && h->def_regular)); | |
2136 | BFD_ASSERT (plt != NULL && gotplt != NULL && relplt != NULL); | |
2137 | if (bfd_csky_abi (output_bfd) == CSKY_ABI_V2) | |
2138 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
2139 | else | |
2140 | plt_index = h->plt.offset / PLT_ENTRY_SIZE_P - 1; | |
2141 | got_offset = (plt_index + 3) * 4; | |
2142 | ||
2143 | /* Fill in the entry in the procedure linkage table. */ | |
2144 | if (bfd_csky_abi (output_bfd) == CSKY_ABI_V2) | |
2145 | { | |
2146 | csky_put_insn_32 (output_bfd, csky_elf_plt_entry_v2[0], | |
2147 | plt->contents + h->plt.offset); | |
2148 | csky_put_insn_32 (output_bfd, | |
2149 | (csky_elf_plt_entry_v2[1] | plt_index), | |
2150 | plt->contents + h->plt.offset + 4); | |
2151 | csky_put_insn_32 (output_bfd, csky_elf_plt_entry_v2[2], | |
2152 | plt->contents + h->plt.offset + 8); | |
2153 | } | |
2154 | else | |
2155 | { | |
2156 | int i; | |
2157 | for (i = 0; i < 6; i++) | |
2158 | bfd_put_16 (output_bfd, csky_elf_plt_entry_v1[i], | |
2159 | plt->contents + h->plt.offset + i * 2); | |
2160 | bfd_put_32 (output_bfd, plt_index, | |
2161 | plt->contents + h->plt.offset + i * 2); | |
2162 | } | |
2163 | ||
2164 | /* Fill in the entry in the .rel.plt section. */ | |
2165 | rel.r_offset = (htab->elf.sgotplt->output_section->vma | |
2166 | + htab->elf.sgotplt->output_offset | |
2167 | + got_offset); | |
2168 | rel.r_info = ELF32_R_INFO (h->dynindx, R_CKCORE_JUMP_SLOT); | |
2169 | rel.r_addend = (plt->output_section->vma | |
2170 | + plt->output_offset | |
2171 | + h->plt.offset); | |
2172 | loc = (htab->elf.srelplt->contents | |
2173 | + plt_index * sizeof (Elf32_External_Rela)); | |
2174 | ||
2175 | if (loc != NULL) | |
2176 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
2177 | if (! h->def_regular) | |
2178 | { | |
2179 | /* Mark the symbol as undefined, rather than as defined in | |
2180 | the .plt section. Leave the value alone. */ | |
2181 | sym->st_shndx = SHN_UNDEF; | |
2182 | /* If the symbol is weak, we do need to clear the value. | |
2183 | Otherwise, the PLT entry would provide a definition for | |
2184 | the symbol even if the symbol wasn't defined anywhere, | |
2185 | and so the symbol would never be NULL. Leave the value if | |
2186 | there were any relocations where pointer equality matters | |
2187 | (this is a clue for the dynamic linker, to make function | |
2188 | pointer comparisons work between an application and shared | |
2189 | library). */ | |
2190 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
2191 | sym->st_value = 0; | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | /* Fill in the entry in the .got section. */ | |
2196 | if (h->got.offset != (bfd_vma) -1 | |
2197 | && ((csky_elf_hash_entry (h)->tls_type & GOT_TLS_GD) == 0) | |
2198 | && ((csky_elf_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)) | |
2199 | { | |
2200 | Elf_Internal_Rela rel; | |
2201 | bfd_byte *loc; | |
2202 | ||
2203 | /* This symbol has an entry in the global offset table. | |
2204 | Set it up. */ | |
2205 | BFD_ASSERT (htab->elf.sgot != NULL && htab->elf.srelgot != NULL); | |
2206 | ||
2207 | rel.r_offset = (htab->elf.sgot->output_section->vma | |
2208 | + htab->elf.sgot->output_offset | |
2209 | + (h->got.offset & ~(bfd_vma) 1)); | |
2210 | ||
2211 | /* If this is a static link, or it is a -Bsymbolic link and the | |
2212 | symbol is defined locally or was forced to be local because | |
2213 | of a version file, we just want to emit a RELATIVE reloc. | |
2214 | The entry in the global offset table will already have been | |
2215 | initialized in the relocate_section function. */ | |
2216 | if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) | |
2217 | { | |
2218 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
2219 | rel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE); | |
2220 | rel.r_addend = (h->root.u.def.value | |
2221 | + h->root.u.def.section->output_offset | |
2222 | + h->root.u.def.section->output_section->vma); | |
2223 | } | |
2224 | else | |
2225 | { | |
2226 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
2227 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
2228 | htab->elf.sgot->contents + h->got.offset); | |
2229 | rel.r_info = ELF32_R_INFO (h->dynindx, R_CKCORE_GLOB_DAT); | |
2230 | rel.r_addend = 0; | |
2231 | } | |
2232 | ||
2233 | loc = htab->elf.srelgot->contents; | |
2234 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
2235 | ||
2236 | if (loc != NULL) | |
2237 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
2238 | } | |
2239 | ||
2240 | if (h->needs_copy) | |
2241 | { | |
2242 | asection *s; | |
2243 | Elf_Internal_Rela rela; | |
2244 | bfd_byte *loc; | |
2245 | ||
2246 | /* This symbol needs a copy reloc. Set it up. */ | |
2247 | BFD_ASSERT (h->dynindx != -1 | |
2248 | && (h->root.type == bfd_link_hash_defined | |
2249 | || h->root.type == bfd_link_hash_defweak)); | |
2250 | ||
2251 | rela.r_offset = (h->root.u.def.value | |
2252 | + h->root.u.def.section->output_section->vma | |
2253 | + h->root.u.def.section->output_offset); | |
2254 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CKCORE_COPY); | |
2255 | rela.r_addend = 0; | |
2256 | if (h->root.u.def.section == htab->elf.sdynrelro) | |
2257 | s = htab->elf.sreldynrelro; | |
2258 | else | |
2259 | s = htab->elf.srelbss; | |
2260 | BFD_ASSERT (s != NULL); | |
2261 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
2262 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
2263 | } | |
2264 | ||
2265 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2266 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2267 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2268 | sym->st_shndx = SHN_ABS; | |
2269 | ||
0a1b45a2 | 2270 | return true; |
b8891f8d AJ |
2271 | } |
2272 | ||
2273 | /* Finish up the dynamic sections. */ | |
2274 | ||
0a1b45a2 | 2275 | static bool |
b8891f8d AJ |
2276 | csky_elf_finish_dynamic_sections (bfd *output_bfd, |
2277 | struct bfd_link_info *info) | |
2278 | { | |
2279 | struct csky_elf_link_hash_table *htab; | |
2280 | bfd *dynobj; | |
2281 | asection *sdyn; | |
2282 | asection *got_sec; | |
2283 | ||
2284 | htab = csky_elf_hash_table (info); | |
2285 | if (htab == NULL) | |
0a1b45a2 | 2286 | return false; |
b8891f8d AJ |
2287 | |
2288 | dynobj = htab->elf.dynobj; | |
2289 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2290 | ||
2291 | if (htab->elf.dynamic_sections_created) | |
2292 | { | |
2293 | Elf32_External_Dyn *dyncon, *dynconend; | |
2294 | ||
2295 | BFD_ASSERT (sdyn != NULL && htab->elf.sgot != NULL); | |
2296 | ||
2297 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2298 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
2299 | for (; dyncon < dynconend; dyncon++) | |
2300 | { | |
2301 | Elf_Internal_Dyn dyn; | |
0a1b45a2 | 2302 | bool size = false; |
b8891f8d AJ |
2303 | const char *name = NULL; |
2304 | ||
2305 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2306 | switch (dyn.d_tag) | |
2307 | { | |
2308 | default: | |
2309 | continue; | |
2310 | case DT_RELA: | |
2311 | name = ".rela.dyn"; | |
0a1b45a2 | 2312 | size = false; |
b8891f8d AJ |
2313 | break; |
2314 | case DT_RELASZ: | |
2315 | name = ".rela.dyn"; | |
0a1b45a2 | 2316 | size = true; |
b8891f8d AJ |
2317 | break; |
2318 | case DT_PLTRELSZ: | |
2319 | name = ".rela.plt"; | |
0a1b45a2 | 2320 | size = true; |
b8891f8d AJ |
2321 | break; |
2322 | case DT_PLTGOT: | |
2323 | dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma; | |
2324 | break; | |
2325 | case DT_JMPREL: | |
2326 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma | |
2327 | + htab->elf.srelplt->output_offset; | |
2328 | break; | |
2329 | } | |
2330 | ||
2331 | if (name != NULL) | |
2332 | { | |
2333 | asection *s = bfd_get_section_by_name (output_bfd, name); | |
2334 | ||
2335 | if (s == NULL) | |
2336 | dyn.d_un.d_val = 0; | |
2337 | else if (!size) | |
2338 | dyn.d_un.d_ptr = s->vma; | |
2339 | else | |
2340 | dyn.d_un.d_val = s->size; | |
2341 | } | |
2342 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | /* Fill in the first three entries in the global offset table. */ | |
2347 | if (htab->elf.sgotplt) | |
2348 | got_sec = htab->elf.sgotplt; | |
2349 | else | |
2350 | got_sec = htab->elf.sgot; | |
2351 | if (got_sec != NULL) | |
2352 | { | |
2353 | if (got_sec->size > 0) | |
2354 | { | |
2355 | bfd_put_32 (output_bfd, | |
2356 | (sdyn == NULL ? (bfd_vma) 0 | |
2357 | : sdyn->output_section->vma + sdyn->output_offset), | |
2358 | got_sec->contents); | |
2359 | bfd_put_32 (output_bfd, (bfd_vma) 0, got_sec->contents + 4); | |
2360 | bfd_put_32 (output_bfd, (bfd_vma) 0, got_sec->contents + 8); | |
2361 | } | |
2362 | elf_section_data (got_sec->output_section)->this_hdr.sh_entsize = 4; | |
2363 | } | |
0a1b45a2 | 2364 | return true; |
b8891f8d AJ |
2365 | } |
2366 | ||
2367 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2368 | ||
2369 | static void | |
2370 | csky_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
2371 | struct elf_link_hash_entry *dir, | |
2372 | struct elf_link_hash_entry *ind) | |
2373 | { | |
2374 | struct csky_elf_link_hash_entry *edir, *eind; | |
2375 | ||
2376 | edir = (struct csky_elf_link_hash_entry *) dir; | |
2377 | eind = (struct csky_elf_link_hash_entry *) ind; | |
2378 | ||
b8891f8d AJ |
2379 | if (ind->root.type == bfd_link_hash_indirect |
2380 | && dir->got.refcount <= 0) | |
2381 | { | |
2382 | edir->tls_type = eind->tls_type; | |
2383 | eind->tls_type = GOT_UNKNOWN; | |
2384 | } | |
2385 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2386 | } | |
2387 | ||
2388 | /* Used to decide how to sort relocs in an optimal manner for the | |
2389 | dynamic linker, before writing them out. */ | |
2390 | ||
2391 | static enum elf_reloc_type_class | |
2392 | csky_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2393 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2394 | const Elf_Internal_Rela *rela) | |
2395 | { | |
2396 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2397 | { | |
2398 | case R_CKCORE_RELATIVE: | |
2399 | return reloc_class_relative; | |
2400 | case R_CKCORE_JUMP_SLOT: | |
2401 | return reloc_class_plt; | |
2402 | case R_CKCORE_COPY: | |
2403 | return reloc_class_copy; | |
2404 | case R_CKCORE_IRELATIVE: | |
2405 | return reloc_class_ifunc; | |
2406 | default: | |
2407 | return reloc_class_normal; | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | /* Return the section that should be marked against GC for a given | |
2412 | relocation. */ | |
2413 | ||
2414 | static asection * | |
2415 | csky_elf_gc_mark_hook (asection *sec, | |
2416 | struct bfd_link_info *info, | |
2417 | Elf_Internal_Rela *rel, | |
2418 | struct elf_link_hash_entry *h, | |
2419 | Elf_Internal_Sym *sym) | |
2420 | { | |
2421 | if (h != NULL) | |
2422 | { | |
2423 | switch (ELF32_R_TYPE (rel->r_info)) | |
2424 | { | |
2425 | case R_CKCORE_GNU_VTINHERIT: | |
2426 | case R_CKCORE_GNU_VTENTRY: | |
2427 | return NULL; | |
2428 | } | |
2429 | } | |
2430 | ||
2431 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
2432 | } | |
2433 | ||
5072b52d AM |
2434 | /* Match symbol names created by tc-csky.c:make_mapping_symbol. */ |
2435 | ||
2436 | static bool | |
2437 | is_mapping_symbol_name (const char *name) | |
2438 | { | |
2439 | return (name && name[0] == '$' | |
2440 | && (name[1] == 't' || name[1] == 'd') | |
2441 | && name[2] == 0); | |
2442 | } | |
2443 | ||
2444 | /* Treat mapping symbols as special target symbols. */ | |
2445 | ||
2446 | static bool | |
2447 | csky_elf_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) | |
2448 | { | |
2449 | return is_mapping_symbol_name (sym->name); | |
2450 | } | |
2451 | ||
2452 | /* Exclude mapping symbols from being treated as function symbols by | |
2453 | objdump and nm. */ | |
2454 | ||
2455 | static bfd_size_type | |
2456 | csky_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
2457 | bfd_vma *code_off) | |
2458 | { | |
2459 | if ((sym->flags & BSF_LOCAL) != 0 | |
2460 | && is_mapping_symbol_name (sym->name)) | |
2461 | return 0; | |
2462 | ||
2463 | return _bfd_elf_maybe_function_sym (sym, sec, code_off); | |
2464 | } | |
2465 | ||
b8891f8d AJ |
2466 | /* Look through the relocs for a section during the first phase. |
2467 | Since we don't do .gots or .plts, we just need to consider the | |
2468 | virtual table relocs for gc. */ | |
2469 | ||
0a1b45a2 | 2470 | static bool |
b8891f8d AJ |
2471 | csky_elf_check_relocs (bfd * abfd, |
2472 | struct bfd_link_info * info, | |
2473 | asection * sec, | |
2474 | const Elf_Internal_Rela * relocs) | |
2475 | { | |
2476 | Elf_Internal_Shdr * symtab_hdr; | |
2477 | struct elf_link_hash_entry ** sym_hashes; | |
2478 | const Elf_Internal_Rela * rel; | |
2479 | const Elf_Internal_Rela * rel_end; | |
2480 | struct csky_elf_link_hash_table *htab; | |
2481 | asection *sreloc; | |
2482 | ||
2483 | /* if output type is relocatable, return. */ | |
2484 | if (bfd_link_relocatable (info)) | |
0a1b45a2 | 2485 | return true; |
b8891f8d AJ |
2486 | |
2487 | htab = csky_elf_hash_table (info); | |
2488 | if (htab == NULL) | |
0a1b45a2 | 2489 | return false; |
b8891f8d AJ |
2490 | |
2491 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; | |
2492 | sym_hashes = elf_sym_hashes (abfd); | |
2493 | ||
2494 | rel_end = relocs + sec->reloc_count; | |
2495 | sreloc = NULL; | |
2496 | for (rel = relocs; rel < rel_end; rel++) | |
2497 | { | |
2498 | struct elf_link_hash_entry *h; | |
2499 | unsigned long r_symndx; | |
2500 | Elf_Internal_Sym *isym; | |
2501 | int r_type; | |
2502 | ||
2503 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2504 | r_type = ELF32_R_TYPE (rel->r_info); | |
2505 | if (r_symndx < symtab_hdr->sh_info) | |
2506 | { | |
2507 | /* A local symbol. */ | |
f1dfbfdb | 2508 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
b8891f8d AJ |
2509 | abfd, r_symndx); |
2510 | if (isym == NULL) | |
0a1b45a2 | 2511 | return false; |
b8891f8d AJ |
2512 | h = NULL; |
2513 | } | |
2514 | else | |
2515 | { | |
2516 | isym = NULL; | |
2517 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2518 | while (h->root.type == bfd_link_hash_indirect | |
2519 | || h->root.type == bfd_link_hash_warning) | |
2520 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2521 | } | |
2522 | ||
2523 | switch (r_type) | |
2524 | { | |
2525 | case R_CKCORE_PCREL_IMM26BY2: | |
2526 | case R_CKCORE_PCREL_IMM11BY2: | |
2527 | case R_CKCORE_PCREL_JSR_IMM11BY2: | |
2528 | case R_CKCORE_PCREL_JSR_IMM26BY2: | |
2529 | /* If the symbol is '*UND*', means this reloc is used for | |
2530 | * callgraph, don't need to leave to shared object. */ | |
2531 | if (r_symndx == 0) | |
2532 | break; | |
2533 | /* Else fall through. */ | |
2534 | case R_CKCORE_ADDR32: | |
2535 | case R_CKCORE_ADDR_HI16: | |
2536 | case R_CKCORE_ADDR_LO16: | |
2537 | if (h != NULL | |
2538 | && bfd_link_executable (info) | |
2539 | && r_type == R_CKCORE_ADDR32 | |
2540 | && h->type == STT_OBJECT | |
2541 | && (sec->flags & SEC_ALLOC) != 0 | |
2542 | && (sec->flags & SEC_READONLY)) | |
2543 | /* If this reloc is in a read-only section, we might | |
2544 | need a copy reloc. We can't check reliably at this | |
2545 | stage whether the section is read-only, as input | |
2546 | sections have not yet been mapped to output sections. | |
2547 | Tentatively set the flag for now, and correct in | |
2548 | adjust_dynamic_symbol. */ | |
2549 | h->non_got_ref = 1; | |
2550 | ||
2551 | /* If we are creating a shared library or relocatable executable, | |
2552 | and this is a reloc against a global symbol, then we need to | |
2553 | copy the reloc into the shared library. However, if we are | |
2554 | linking with -Bsymbolic, we do not need to copy a reloc | |
2555 | against a global symbol which is defined in an object we are | |
2556 | including in the link (i.e., DEF_REGULAR is set). At | |
2557 | this point we have not seen all the input files, so it is | |
2558 | possible that DEF_REGULAR is not set now but will be set | |
2559 | later (it is never cleared). We account for that possibility | |
2560 | below by storing information in the relocs_copied field of | |
2561 | the hash table entry. */ | |
2562 | if ((bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) | |
2563 | || (!bfd_link_pic (info) | |
2564 | && (sec->flags & SEC_ALLOC) != 0 | |
2565 | && h != NULL | |
2566 | && (h->root.type == bfd_link_hash_defweak | |
2567 | || !h->def_regular))) | |
2568 | { | |
2569 | struct elf_dyn_relocs *p; | |
2570 | struct elf_dyn_relocs **head; | |
2571 | /* We must copy these reloc types into the output file. | |
2572 | Create a reloc section in dynobj and make room for | |
2573 | this reloc. */ | |
2574 | if (sreloc == NULL) | |
2575 | { | |
2576 | if (htab->elf.dynobj == NULL) | |
2577 | htab->elf.dynobj = abfd; | |
2578 | ||
2579 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0a1b45a2 | 2580 | (sec, htab->elf.dynobj, 2, abfd, true); |
b8891f8d AJ |
2581 | |
2582 | if (sreloc == NULL) | |
0a1b45a2 | 2583 | return false; |
b8891f8d AJ |
2584 | } |
2585 | ||
2586 | if (h == NULL && !use_branch_stub | |
2587 | && ((ELF32_R_TYPE (rel->r_info) | |
2588 | == R_CKCORE_PCREL_IMM26BY2) | |
2589 | || (ELF32_R_TYPE (rel->r_info) | |
2590 | == R_CKCORE_PCREL_IMM11BY2))) | |
2591 | break; | |
2592 | ||
2593 | /* If this is a global symbol, we count the number of | |
2594 | relocations we need for this symbol. */ | |
2595 | if (h != NULL) | |
2596 | { | |
2597 | struct csky_elf_link_hash_entry *eh; | |
2598 | eh = (struct csky_elf_link_hash_entry *)h; | |
2599 | if ((ELF32_R_TYPE (rel->r_info) | |
2600 | == R_CKCORE_PCREL_JSR_IMM26BY2) | |
2601 | || (ELF32_R_TYPE (rel->r_info) | |
2602 | == R_CKCORE_PCREL_JSR_IMM11BY2)) | |
2603 | eh->jsri2bsr_refcount += 1; | |
190eb1dd | 2604 | head = &h->dyn_relocs; |
b8891f8d AJ |
2605 | } |
2606 | else | |
2607 | { | |
2608 | /* Track dynamic relocs needed for local syms too. | |
2609 | We really need local syms available to do this | |
2610 | easily. Oh well. */ | |
2611 | void **vpp; | |
2612 | asection *s; | |
2613 | Elf_Internal_Sym *loc_isym; | |
2614 | ||
f1dfbfdb | 2615 | loc_isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
b8891f8d AJ |
2616 | abfd, r_symndx); |
2617 | if (loc_isym == NULL) | |
0a1b45a2 | 2618 | return false; |
b8891f8d AJ |
2619 | s = bfd_section_from_elf_index (abfd, loc_isym->st_shndx); |
2620 | if (s == NULL) | |
2621 | s = sec; | |
2622 | vpp = &elf_section_data (s)->local_dynrel; | |
2623 | head = (struct elf_dyn_relocs **)vpp; | |
2624 | } | |
2625 | ||
2626 | p = *head; | |
2627 | if (p == NULL || p->sec != sec) | |
2628 | { | |
986f0783 | 2629 | size_t amt = sizeof *p; |
b8891f8d AJ |
2630 | p = ((struct elf_dyn_relocs *) |
2631 | bfd_alloc (htab->elf.dynobj, amt)); | |
2632 | if (p == NULL) | |
0a1b45a2 | 2633 | return false; |
b8891f8d AJ |
2634 | p->next = *head; |
2635 | *head = p; | |
2636 | p->sec = sec; | |
2637 | p->count = 0; | |
2638 | p->pc_count = 0; | |
2639 | } | |
2640 | ||
2641 | if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_IMM26BY2 | |
2642 | || ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_IMM11BY2) | |
2643 | p->pc_count += 1; | |
2644 | p->count += 1; | |
2645 | } | |
2646 | break; | |
2647 | ||
2648 | case R_CKCORE_PLT_IMM18BY4: | |
2649 | case R_CKCORE_PLT32: | |
2650 | /* This symbol requires a procedure linkage table entry. We | |
2651 | actually build the entry in adjust_dynamic_symbol, | |
2652 | because this might be a case of linking PIC code which is | |
2653 | never referenced by a dynamic object, in which case we | |
2654 | don't need to generate a procedure linkage table entry | |
2655 | after all. */ | |
2656 | ||
2657 | /* If this is a local symbol, we resolve it directly without | |
2658 | creating a procedure linkage table entry. */ | |
2659 | if (h == NULL) | |
2660 | continue; | |
2661 | if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_PLT_IMM18BY4) | |
2662 | check_got_overflow = 1; | |
2663 | ||
2664 | h->needs_plt = 1; | |
2665 | h->plt.refcount += 1; | |
2666 | h->got.refcount += 1; | |
2667 | ((struct csky_elf_link_hash_entry *)h)->plt_refcount += 1; | |
2668 | break; | |
2669 | ||
2670 | case R_CKCORE_GOT12: | |
2671 | case R_CKCORE_PLT12: | |
2672 | case R_CKCORE_GOT32: | |
2673 | case R_CKCORE_GOT_HI16: | |
2674 | case R_CKCORE_GOT_LO16: | |
2675 | case R_CKCORE_PLT_HI16: | |
2676 | case R_CKCORE_PLT_LO16: | |
2677 | case R_CKCORE_GOT_IMM18BY4: | |
2678 | case R_CKCORE_TLS_IE32: | |
2679 | case R_CKCORE_TLS_GD32: | |
2680 | { | |
2681 | int tls_type, old_tls_type; | |
2682 | ||
2683 | if (h != NULL | |
2684 | && bfd_link_executable (info) | |
2685 | && r_type == R_CKCORE_GOT_IMM18BY4 | |
2686 | && (sec->flags & SEC_ALLOC) != 0 | |
2687 | && (sec->flags & SEC_READONLY)) | |
2688 | /* If this reloc is in a read-only section, we might | |
2689 | need a copy reloc. We can't check reliably at this | |
2690 | stage whether the section is read-only, as input | |
2691 | sections have not yet been mapped to output sections. | |
2692 | Tentatively set the flag for now, and correct in | |
2693 | adjust_dynamic_symbol. */ | |
2694 | h->non_got_ref = 1; | |
2695 | ||
2696 | switch (ELF32_R_TYPE (rel->r_info)) | |
2697 | { | |
2698 | case R_CKCORE_TLS_IE32: | |
2699 | tls_type = GOT_TLS_IE; | |
2700 | break; | |
2701 | case R_CKCORE_TLS_GD32: | |
2702 | tls_type = GOT_TLS_GD; | |
2703 | break; | |
2704 | default: | |
2705 | tls_type = GOT_NORMAL; | |
2706 | break; | |
2707 | } | |
2708 | if (h != NULL) | |
2709 | { | |
2710 | if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_GOT_IMM18BY4) | |
2711 | check_got_overflow = 1; | |
2712 | h->got.refcount += 1; | |
2713 | old_tls_type = csky_elf_hash_entry (h)->tls_type; | |
2714 | } | |
2715 | else | |
2716 | { | |
2717 | bfd_signed_vma *local_got_refcounts; | |
2718 | ||
2719 | /* This is a global offset table entry for a local symbol. */ | |
2720 | /* we can write a new function named | |
2721 | elf32_csky_allocate_local_sym_info() to replace | |
2722 | following code. */ | |
2723 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2724 | if (local_got_refcounts == NULL) | |
2725 | { | |
2726 | bfd_size_type size; | |
2727 | ||
2728 | size = symtab_hdr->sh_info; | |
2729 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); | |
2730 | local_got_refcounts = ((bfd_signed_vma *) | |
2731 | bfd_zalloc (abfd, size)); | |
2732 | if (local_got_refcounts == NULL) | |
0a1b45a2 | 2733 | return false; |
b8891f8d AJ |
2734 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
2735 | csky_elf_local_got_tls_type (abfd) | |
2736 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
2737 | } | |
2738 | local_got_refcounts[r_symndx] += 1; | |
2739 | old_tls_type = csky_elf_local_got_tls_type (abfd)[r_symndx]; | |
2740 | } | |
2741 | ||
2742 | /* We will already have issued an error message if there is a | |
2743 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
2744 | support any linker relaxations. So just combine any TLS | |
2745 | types needed. */ | |
2746 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
2747 | && tls_type != GOT_NORMAL) | |
2748 | tls_type |= old_tls_type; | |
2749 | ||
2750 | if (old_tls_type != tls_type) | |
2751 | { | |
2752 | if (h != NULL) | |
2753 | csky_elf_hash_entry (h)->tls_type = tls_type; | |
2754 | else | |
2755 | csky_elf_local_got_tls_type (abfd)[r_symndx] = tls_type; | |
2756 | } | |
2757 | } | |
2758 | /* Fall through. */ | |
2759 | ||
2760 | case R_CKCORE_TLS_LDM32: | |
2761 | if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_TLS_LDM32) | |
2762 | htab->tls_ldm_got.refcount++; | |
2763 | /* Fall through. */ | |
2764 | ||
2765 | case R_CKCORE_GOTOFF: | |
2766 | case R_CKCORE_GOTPC: | |
2767 | case R_CKCORE_GOTOFF_HI16: | |
2768 | case R_CKCORE_GOTOFF_LO16: | |
2769 | case R_CKCORE_GOTPC_HI16: | |
2770 | case R_CKCORE_GOTPC_LO16: | |
2771 | case R_CKCORE_GOTOFF_IMM18: | |
2772 | if (htab->elf.sgot == NULL) | |
2773 | { | |
2774 | if (htab->elf.dynobj == NULL) | |
2775 | htab->elf.dynobj = abfd; | |
2776 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
0a1b45a2 | 2777 | return false; |
b8891f8d AJ |
2778 | } |
2779 | break; | |
2780 | ||
2781 | /* This relocation describes the C++ object vtable hierarchy. | |
2782 | Reconstruct it for later use during GC. */ | |
2783 | case R_CKCORE_GNU_VTINHERIT: | |
2784 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
0a1b45a2 | 2785 | return false; |
b8891f8d AJ |
2786 | break; |
2787 | ||
2788 | /* This relocation describes which C++ vtable entries are actually | |
2789 | used. Record for later use during GC. */ | |
2790 | case R_CKCORE_GNU_VTENTRY: | |
a0ea3a14 | 2791 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
0a1b45a2 | 2792 | return false; |
b8891f8d AJ |
2793 | break; |
2794 | } | |
2795 | } | |
2796 | ||
0a1b45a2 | 2797 | return true; |
b8891f8d AJ |
2798 | } |
2799 | ||
2800 | static const struct bfd_elf_special_section csky_elf_special_sections[]= | |
2801 | { | |
2802 | { STRING_COMMA_LEN (".ctors"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2803 | { STRING_COMMA_LEN (".dtors"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2804 | { NULL, 0, 0, 0, 0 } | |
2805 | }; | |
2806 | ||
2807 | /* Function to keep CSKY specific flags in the ELF header. */ | |
2808 | ||
0a1b45a2 | 2809 | static bool |
b8891f8d AJ |
2810 | csky_elf_set_private_flags (bfd * abfd, flagword flags) |
2811 | { | |
2812 | BFD_ASSERT (! elf_flags_init (abfd) | |
2813 | || elf_elfheader (abfd)->e_flags == flags); | |
2814 | ||
2815 | elf_elfheader (abfd)->e_flags = flags; | |
0a1b45a2 AM |
2816 | elf_flags_init (abfd) = true; |
2817 | return true; | |
b8891f8d AJ |
2818 | } |
2819 | ||
2820 | static csky_arch_for_merge * | |
2821 | csky_find_arch_with_eflag (const unsigned long arch_eflag) | |
2822 | { | |
2823 | csky_arch_for_merge *csky_arch = NULL; | |
2824 | ||
2825 | for (csky_arch = csky_archs; csky_arch->name != NULL; csky_arch++) | |
2826 | if (csky_arch->arch_eflag == arch_eflag) | |
2827 | break; | |
2828 | if (csky_arch == NULL) | |
2829 | { | |
2830 | _bfd_error_handler (_("warning: unrecognized arch eflag '%#lx'"), | |
2831 | arch_eflag); | |
2832 | bfd_set_error (bfd_error_wrong_format); | |
2833 | } | |
2834 | return csky_arch; | |
2835 | } | |
2836 | ||
0861f561 CQ |
2837 | static csky_arch_for_merge * |
2838 | csky_find_arch_with_name (const char *name) | |
2839 | { | |
2840 | csky_arch_for_merge *csky_arch = NULL; | |
2841 | const char *msg; | |
2842 | ||
2843 | if (name == NULL) | |
2844 | return NULL; | |
2845 | ||
2846 | for (csky_arch = csky_archs; csky_arch->name != NULL; csky_arch++) | |
2847 | { | |
2848 | if (strncmp (csky_arch->name, name, strlen (csky_arch->name)) == 0) | |
2849 | break; | |
2850 | } | |
2851 | if (csky_arch == NULL) | |
2852 | { | |
2853 | msg = _("warning: unrecognised arch name '%#x'"); | |
2854 | (*_bfd_error_handler) (msg, name); | |
2855 | bfd_set_error (bfd_error_wrong_format); | |
2856 | } | |
2857 | return csky_arch; | |
2858 | } | |
2859 | ||
0a1b45a2 | 2860 | static bool |
0861f561 CQ |
2861 | elf32_csky_merge_attributes (bfd *ibfd, struct bfd_link_info *info) |
2862 | { | |
2863 | bfd *obfd = info->output_bfd; | |
2864 | obj_attribute *in_attr; | |
2865 | obj_attribute *out_attr; | |
0861f561 CQ |
2866 | csky_arch_for_merge *old_arch = NULL; |
2867 | csky_arch_for_merge *new_arch = NULL; | |
2868 | int i; | |
0a1b45a2 | 2869 | bool result = true; |
0861f561 CQ |
2870 | const char *msg = NULL; |
2871 | ||
2872 | const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; | |
2873 | ||
2874 | /* Skip the linker stubs file. This preserves previous behavior | |
2875 | of accepting unknown attributes in the first input file - but | |
2876 | is that a bug? */ | |
2877 | if (ibfd->flags & BFD_LINKER_CREATED) | |
0a1b45a2 | 2878 | return true; |
0861f561 CQ |
2879 | |
2880 | /* Skip any input that hasn't attribute section. | |
2881 | This enables to link object files without attribute section with | |
2882 | any others. */ | |
2883 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL) | |
2884 | { | |
0a1b45a2 | 2885 | return true; |
0861f561 CQ |
2886 | } |
2887 | ||
2888 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
2889 | { | |
2890 | /* This is the first object. Copy the attributes. */ | |
2891 | out_attr = elf_known_obj_attributes_proc (obfd); | |
2892 | ||
0861f561 CQ |
2893 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
2894 | ||
0861f561 CQ |
2895 | /* Use the Tag_null value to indicate the attributes have been |
2896 | initialized. */ | |
2897 | out_attr[0].i = 1; | |
2898 | } | |
2899 | ||
2900 | in_attr = elf_known_obj_attributes_proc (ibfd); | |
2901 | out_attr = elf_known_obj_attributes_proc (obfd); | |
2902 | ||
2903 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) | |
2904 | { | |
2905 | /* Merge this attribute with existing attributes. */ | |
2906 | switch (i) | |
2907 | { | |
2908 | case Tag_CSKY_CPU_NAME: | |
2909 | case Tag_CSKY_ARCH_NAME: | |
2910 | /* Do arch merge. */ | |
2911 | new_arch = csky_find_arch_with_name (in_attr[Tag_CSKY_ARCH_NAME].s); | |
2912 | old_arch = csky_find_arch_with_name (out_attr[Tag_CSKY_ARCH_NAME].s); | |
2913 | ||
2914 | if (new_arch != NULL && old_arch != NULL) | |
2915 | { | |
2916 | if (new_arch->class != old_arch->class) | |
2917 | { | |
2918 | msg = _("%pB: machine flag conflict with target"); | |
2919 | (*_bfd_error_handler) (msg, ibfd); | |
2920 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 2921 | return false; |
0861f561 CQ |
2922 | } |
2923 | else if (new_arch->class_level != old_arch->class_level) | |
2924 | { | |
2925 | csky_arch_for_merge *newest_arch = | |
2926 | ((new_arch->class_level > old_arch->class_level) ? | |
2927 | new_arch : old_arch); | |
2928 | ||
2929 | if (new_arch->do_warning || old_arch->do_warning) | |
2930 | { | |
2931 | msg = _("warning: file %pB's arch flag %s conflict " | |
2932 | "with target %s,set target arch flag to %s"); | |
2933 | (*_bfd_error_handler) (msg, ibfd, new_arch->name, | |
2934 | old_arch->name, | |
2935 | (newest_arch->name)); | |
2936 | bfd_set_error (bfd_error_wrong_format); | |
2937 | } | |
2938 | ||
2939 | if (out_attr[Tag_CSKY_ARCH_NAME].s != NULL) | |
2940 | bfd_release (obfd, out_attr[Tag_CSKY_ARCH_NAME].s); | |
2941 | ||
2942 | out_attr[Tag_CSKY_ARCH_NAME].s = | |
2943 | _bfd_elf_attr_strdup (obfd, newest_arch->name); | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | break; | |
2948 | ||
2949 | case Tag_CSKY_ISA_FLAGS: | |
2950 | case Tag_CSKY_ISA_EXT_FLAGS: | |
2951 | /* Do ISA merge. */ | |
2952 | break; | |
2953 | ||
2954 | case Tag_CSKY_VDSP_VERSION: | |
2955 | if (out_attr[i].i == 0) | |
2956 | out_attr[i].i = in_attr[i].i; | |
2957 | else if (out_attr[i].i != in_attr[i].i) | |
2958 | { | |
2959 | _bfd_error_handler | |
2960 | (_("Error: %pB and %pB has different VDSP version"), ibfd, obfd); | |
0a1b45a2 | 2961 | result = false; |
0861f561 CQ |
2962 | } |
2963 | break; | |
2964 | ||
2965 | case Tag_CSKY_FPU_VERSION: | |
2966 | if (out_attr[i].i <= in_attr[i].i | |
2967 | && out_attr[i].i == 0) | |
2968 | out_attr[i].i = in_attr[i].i; | |
2969 | break; | |
2970 | ||
2971 | case Tag_CSKY_DSP_VERSION: | |
2972 | if (out_attr[i].i == 0) | |
2973 | out_attr[i].i = in_attr[i].i; | |
2974 | else if (out_attr[i].i != in_attr[i].i) | |
2975 | { | |
2976 | _bfd_error_handler | |
2977 | (_("Error: %pB and %pB has different DSP version"), ibfd, obfd); | |
0a1b45a2 | 2978 | result = false; |
0861f561 CQ |
2979 | } |
2980 | break; | |
2981 | ||
2982 | case Tag_CSKY_FPU_ABI: | |
2983 | if (out_attr[i].i != in_attr[i].i | |
2984 | && (out_attr[i].i == 0 | |
2985 | || (out_attr[i].i == VAL_CSKY_FPU_ABI_SOFT | |
2986 | && in_attr[i].i == VAL_CSKY_FPU_ABI_SOFTFP))) | |
2987 | { | |
2988 | out_attr[i].i = in_attr[i].i; | |
2989 | } | |
2990 | else if (out_attr[i].i == VAL_CSKY_FPU_ABI_HARD | |
2991 | && (out_attr[i].i != in_attr[i].i | |
2992 | && in_attr[i].i != 0)) | |
2993 | { | |
2994 | _bfd_error_handler | |
2995 | (_("Error: %pB and %pB has different FPU ABI"), ibfd, obfd); | |
0a1b45a2 | 2996 | result = false; |
0861f561 CQ |
2997 | } |
2998 | break; | |
2999 | ||
3000 | default: | |
3001 | result = | |
3002 | result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); | |
3003 | break; | |
3004 | } | |
3005 | ||
3006 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
3007 | if (in_attr[i].type && !out_attr[i].type) | |
3008 | out_attr[i].type = in_attr[i].type; | |
3009 | } | |
3010 | ||
3011 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
3012 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) | |
0a1b45a2 | 3013 | return false; |
0861f561 CQ |
3014 | |
3015 | /* Check for any attributes not known on CSKY. */ | |
3016 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); | |
3017 | ||
3018 | return result; | |
3019 | } | |
3020 | ||
b8891f8d AJ |
3021 | /* Merge backend specific data from an object file to the output |
3022 | object file when linking. */ | |
3023 | ||
0a1b45a2 | 3024 | static bool |
b8891f8d AJ |
3025 | csky_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
3026 | { | |
3027 | bfd *obfd = info->output_bfd; | |
3028 | flagword old_flags; | |
3029 | flagword new_flags; | |
3030 | csky_arch_for_merge *old_arch = NULL; | |
3031 | csky_arch_for_merge *new_arch = NULL; | |
0861f561 CQ |
3032 | flagword newest_flag = 0; |
3033 | const char *sec_name; | |
3034 | obj_attribute *out_attr; | |
b8891f8d AJ |
3035 | |
3036 | /* Check if we have the same endianness. */ | |
3037 | if (! _bfd_generic_verify_endian_match (ibfd, info)) | |
0a1b45a2 | 3038 | return false; |
b8891f8d AJ |
3039 | |
3040 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3041 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
0a1b45a2 | 3042 | return true; |
b8891f8d | 3043 | |
0861f561 CQ |
3044 | /* Merge ".csky.attribute" section. */ |
3045 | if (!elf32_csky_merge_attributes (ibfd, info)) | |
0a1b45a2 | 3046 | return false; |
b8891f8d AJ |
3047 | |
3048 | if (! elf_flags_init (obfd)) | |
3049 | { | |
3050 | /* First call, no flags set. */ | |
0a1b45a2 | 3051 | elf_flags_init (obfd) = true; |
b8891f8d | 3052 | } |
0861f561 CQ |
3053 | |
3054 | /* Try to merge e_flag. */ | |
3055 | new_flags = elf_elfheader (ibfd)->e_flags; | |
3056 | old_flags = elf_elfheader (obfd)->e_flags; | |
3057 | out_attr = elf_known_obj_attributes_proc (obfd); | |
3058 | ||
fd1b3e0e XQ |
3059 | /* The flags like "e , f ,g ..." , we take collection. */ |
3060 | newest_flag = old_flags | new_flags; | |
0861f561 CQ |
3061 | |
3062 | sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; | |
fd1b3e0e XQ |
3063 | |
3064 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL | |
13023445 NC |
3065 | || ((new_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK)) != |
3066 | (old_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK)))) | |
b8891f8d | 3067 | { |
0861f561 CQ |
3068 | /* Input BFDs have no ".csky.attribute" section. */ |
3069 | new_arch = csky_find_arch_with_eflag (new_flags & CSKY_ARCH_MASK); | |
3070 | old_arch = csky_find_arch_with_name (out_attr[Tag_CSKY_ARCH_NAME].s); | |
b8891f8d | 3071 | |
0861f561 | 3072 | if (new_arch != NULL && old_arch != NULL) |
b8891f8d | 3073 | { |
0861f561 | 3074 | if (new_arch->class != old_arch->class) |
b8891f8d | 3075 | { |
0861f561 CQ |
3076 | _bfd_error_handler |
3077 | /* xgettext:c-format */ | |
3078 | (_("%pB: machine flag conflict with target"), ibfd); | |
3079 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 3080 | return false; |
0861f561 CQ |
3081 | } |
3082 | else if (new_arch->class_level != old_arch->class_level) | |
3083 | { | |
3084 | csky_arch_for_merge *newest_arch = | |
3085 | (new_arch->class_level > old_arch->class_level | |
3086 | ? new_arch : old_arch); | |
3087 | ||
3088 | if (new_arch->do_warning || old_arch->do_warning) | |
b8891f8d AJ |
3089 | { |
3090 | _bfd_error_handler | |
3091 | /* xgettext:c-format */ | |
0861f561 CQ |
3092 | (_("warning: file %pB's arch flag %s conflicts with " |
3093 | "target ck%s, using %s"), | |
3094 | ibfd, new_arch->name, old_arch->name, | |
3095 | newest_arch->name); | |
b8891f8d | 3096 | bfd_set_error (bfd_error_wrong_format); |
b8891f8d | 3097 | } |
b8891f8d | 3098 | |
0861f561 CQ |
3099 | if (out_attr[Tag_CSKY_ARCH_NAME].s != NULL) |
3100 | bfd_release (obfd, out_attr[Tag_CSKY_ARCH_NAME].s); | |
3101 | ||
3102 | out_attr[Tag_CSKY_ARCH_NAME].s = | |
3103 | _bfd_elf_attr_strdup (obfd, newest_arch->name); | |
b8891f8d | 3104 | } |
b8891f8d AJ |
3105 | } |
3106 | else | |
0861f561 CQ |
3107 | { |
3108 | if (new_arch && new_arch->name != NULL) | |
3109 | out_attr[Tag_CSKY_ARCH_NAME].s = | |
3110 | _bfd_elf_attr_strdup (obfd, new_arch->name); | |
3111 | } | |
b8891f8d | 3112 | } |
0861f561 CQ |
3113 | |
3114 | elf_elfheader (obfd)->e_flags = newest_flag; | |
3115 | ||
0a1b45a2 | 3116 | return true; |
b8891f8d AJ |
3117 | } |
3118 | ||
3119 | /* Ignore the discarded relocs in special sections in link time. */ | |
3120 | ||
0a1b45a2 | 3121 | static bool |
b8891f8d AJ |
3122 | csky_elf_ignore_discarded_relocs (asection *sec) |
3123 | { | |
3124 | if (strcmp (sec->name, ".csky_stack_size") == 0) | |
0a1b45a2 AM |
3125 | return true; |
3126 | return false; | |
b8891f8d AJ |
3127 | } |
3128 | ||
3129 | /* .csky_stack_size are not referenced directly. This pass marks all of | |
3130 | them as required. */ | |
3131 | ||
0a1b45a2 | 3132 | static bool |
b8891f8d AJ |
3133 | elf32_csky_gc_mark_extra_sections (struct bfd_link_info *info, |
3134 | elf_gc_mark_hook_fn gc_mark_hook ATTRIBUTE_UNUSED) | |
3135 | { | |
3136 | bfd *sub; | |
3137 | ||
3138 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); | |
3139 | ||
3140 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3141 | { | |
3142 | asection *o; | |
3143 | ||
3144 | for (o = sub->sections; o != NULL; o = o->next) | |
3145 | if (strcmp (o->name, ".csky_stack_size") == 0) | |
3146 | o->gc_mark = 1; | |
3147 | } | |
3148 | ||
0a1b45a2 | 3149 | return true; |
b8891f8d AJ |
3150 | } |
3151 | ||
3152 | /* The linker repeatedly calls this function for each input section, | |
3153 | in the order that input sections are linked into output sections. | |
3154 | Build lists of input sections to determine groupings between which | |
3155 | we may insert linker stubs. */ | |
3156 | ||
3157 | void | |
3158 | elf32_csky_next_input_section (struct bfd_link_info *info, | |
3159 | asection *isec) | |
3160 | { | |
3161 | struct csky_elf_link_hash_table *htab = csky_elf_hash_table (info); | |
3162 | if (htab == NULL) | |
3163 | return; | |
3164 | if (isec->output_section->index <= htab->top_index) | |
3165 | { | |
3166 | asection **list = htab->input_list + isec->output_section->index; | |
3167 | ||
3168 | if (*list != bfd_abs_section_ptr) | |
3169 | { | |
3170 | /* Steal the link_sec pointer for our list. */ | |
3171 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
3172 | /* This happens to make the list in reverse order, | |
3173 | which we reverse later in group_sections. */ | |
3174 | PREV_SEC (isec) = *list; | |
3175 | *list = isec; | |
3176 | } | |
3177 | } | |
3178 | } | |
3179 | ||
3180 | /* See whether we can group stub sections together. Grouping stub | |
3181 | sections may result in fewer stubs. More importantly, we need to | |
3182 | put all .init* and .fini* stubs at the end of the .init or | |
3183 | .fini output sections respectively, because glibc splits the | |
3184 | _init and _fini functions into multiple parts. Putting a stub in | |
3185 | the middle of a function is not a good idea. */ | |
3186 | ||
3187 | static void | |
3188 | group_sections (struct csky_elf_link_hash_table *htab, | |
3189 | bfd_size_type stub_group_size, | |
0a1b45a2 | 3190 | bool stubs_always_after_branch) |
b8891f8d AJ |
3191 | { |
3192 | asection **list = htab->input_list; | |
3193 | ||
3194 | do | |
3195 | { | |
3196 | asection *tail = *list; | |
3197 | asection *head; | |
3198 | ||
3199 | if (tail == bfd_abs_section_ptr) | |
3200 | continue; | |
3201 | ||
3202 | /* Reverse the list: we must avoid placing stubs at the | |
4b24dd1a AM |
3203 | beginning of the section because the beginning of the text |
3204 | section may be required for an interrupt vector in bare metal | |
3205 | code. */ | |
b8891f8d AJ |
3206 | #define NEXT_SEC PREV_SEC |
3207 | head = NULL; | |
3208 | while (tail != NULL) | |
3209 | { | |
3210 | /* Pop from tail. */ | |
3211 | asection *item = tail; | |
3212 | tail = PREV_SEC (item); | |
3213 | ||
3214 | /* Push on head. */ | |
3215 | NEXT_SEC (item) = head; | |
3216 | head = item; | |
3217 | } | |
3218 | ||
3219 | while (head != NULL) | |
3220 | { | |
3221 | asection *curr; | |
3222 | asection *next; | |
3223 | bfd_vma stub_group_start = head->output_offset; | |
3224 | bfd_vma end_of_next; | |
3225 | ||
3226 | curr = head; | |
3227 | while (NEXT_SEC (curr) != NULL) | |
3228 | { | |
3229 | next = NEXT_SEC (curr); | |
3230 | end_of_next = next->output_offset + next->size; | |
3231 | if (end_of_next - stub_group_start >= stub_group_size) | |
3232 | /* End of NEXT is too far from start, so stop. */ | |
3233 | break; | |
3234 | curr = next; | |
3235 | } | |
3236 | ||
3237 | /* OK, the size from the start to the start of CURR is less | |
3238 | * than stub_group_size and thus can be handled by one stub | |
3239 | * section. (Or the head section is itself larger than | |
3240 | * stub_group_size, in which case we may be toast.) | |
3241 | * We should really be keeping track of the total size of | |
3242 | * stubs added here, as stubs contribute to the final output | |
3243 | * section size. */ | |
3244 | do | |
3245 | { | |
3246 | next = NEXT_SEC (head); | |
3247 | /* Set up this stub group. */ | |
3248 | htab->stub_group[head->id].link_sec = curr; | |
3249 | } | |
3250 | while (head != curr && (head = next) != NULL); | |
3251 | ||
3252 | /* But wait, there's more! Input sections up to stub_group_size | |
3253 | * bytes after the stub section can be handled by it too. */ | |
3254 | if (!stubs_always_after_branch) | |
3255 | { | |
3256 | stub_group_start = curr->output_offset + curr->size; | |
3257 | ||
3258 | while (next != NULL) | |
3259 | { | |
3260 | end_of_next = next->output_offset + next->size; | |
3261 | if (end_of_next - stub_group_start >= stub_group_size) | |
3262 | /* End of NEXT is too far from stubs, so stop. */ | |
3263 | break; | |
3264 | /* Add NEXT to the stub group. */ | |
3265 | head = next; | |
3266 | next = NEXT_SEC (head); | |
3267 | htab->stub_group[head->id].link_sec = curr; | |
3268 | } | |
3269 | } | |
3270 | head = next; | |
3271 | } | |
3272 | } | |
3273 | while (list++ != htab->input_list + htab->top_index); | |
3274 | ||
3275 | free (htab->input_list); | |
3276 | #undef PREV_SEC | |
3277 | #undef NEXT_SEC | |
3278 | } | |
3279 | ||
3280 | /* If the symbol referenced by bsr is defined in shared object file, | |
3281 | or it is a weak symbol and we aim to create shared object file, | |
3282 | we must create a stub for this bsr. */ | |
3283 | ||
0a1b45a2 | 3284 | static bool |
b8891f8d AJ |
3285 | sym_must_create_stub (struct elf_link_hash_entry *h, |
3286 | struct bfd_link_info *info) | |
3287 | { | |
3288 | if (h != NULL | |
3289 | && ((h->def_dynamic && !h->def_regular) | |
3290 | || (bfd_link_pic (info) && h->root.type == bfd_link_hash_defweak))) | |
0a1b45a2 | 3291 | return true; |
b8891f8d | 3292 | else |
0a1b45a2 | 3293 | return false; |
b8891f8d AJ |
3294 | } |
3295 | ||
3296 | /* Calculate the template, template size and instruction size for a stub. | |
3297 | Return value is the instruction size. */ | |
3298 | ||
3299 | static unsigned int | |
3300 | find_stub_size_and_template (enum elf32_csky_stub_type stub_type, | |
3301 | const insn_sequence **stub_template, | |
3302 | int *stub_template_size) | |
3303 | { | |
3304 | const insn_sequence *template_sequence = NULL; | |
3305 | int template_size = 0; | |
3306 | int i; | |
3307 | unsigned int size; | |
3308 | ||
3309 | template_sequence = stub_definitions[stub_type].template_sequence; | |
3310 | template_size = stub_definitions[stub_type].template_size; | |
3311 | ||
3312 | size = 0; | |
3313 | for (i = 0; i < template_size; i++) | |
3314 | { | |
3315 | switch (template_sequence[i].type) | |
3316 | { | |
3317 | case INSN16: | |
3318 | size += 2; | |
3319 | break; | |
3320 | ||
3321 | case INSN32: | |
3322 | case DATA_TYPE: | |
3323 | size += 4; | |
3324 | break; | |
3325 | ||
3326 | default: | |
3327 | BFD_FAIL (); | |
0a1b45a2 | 3328 | return false; |
b8891f8d AJ |
3329 | } |
3330 | } | |
3331 | ||
3332 | if (stub_template) | |
3333 | *stub_template = template_sequence; | |
3334 | if (stub_template_size) | |
3335 | *stub_template_size = template_size; | |
3336 | ||
3337 | return size; | |
3338 | } | |
3339 | ||
3340 | /* As above, but don't actually build the stub. Just bump offset so | |
3341 | we know stub section sizes. */ | |
3342 | ||
0a1b45a2 | 3343 | static bool |
b8891f8d AJ |
3344 | csky_size_one_stub (struct bfd_hash_entry *gen_entry, |
3345 | void * in_arg ATTRIBUTE_UNUSED) | |
3346 | { | |
3347 | struct elf32_csky_stub_hash_entry *stub_entry; | |
3348 | const insn_sequence *template_sequence = NULL; | |
3349 | int template_size = 0; | |
3350 | int size = 0; | |
3351 | ||
3352 | /* Massage our args to the form they really have. */ | |
3353 | stub_entry = (struct elf32_csky_stub_hash_entry *) gen_entry; | |
3354 | ||
3355 | BFD_ASSERT (stub_entry->stub_type > csky_stub_none | |
3356 | && stub_entry->stub_type < ARRAY_SIZE (stub_definitions)); | |
3357 | size = find_stub_size_and_template (stub_entry->stub_type, | |
3358 | &template_sequence, &template_size); | |
3359 | stub_entry->stub_size = size; | |
3360 | stub_entry->stub_template = template_sequence; | |
3361 | stub_entry->stub_template_size = template_size; | |
3362 | ||
3363 | size = (size + 7) & ~7; | |
3364 | stub_entry->stub_sec->size += size; | |
0a1b45a2 | 3365 | return true; |
b8891f8d AJ |
3366 | } |
3367 | ||
3368 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3369 | stub entry are initialised. */ | |
3370 | ||
3371 | static struct elf32_csky_stub_hash_entry * | |
3372 | elf32_csky_add_stub (const char *stub_name, | |
3373 | asection *section, | |
3374 | struct csky_elf_link_hash_table *htab) | |
3375 | { | |
3376 | asection *link_sec; | |
3377 | asection *stub_sec; | |
3378 | struct elf32_csky_stub_hash_entry *stub_entry; | |
3379 | ||
3380 | stub_sec = elf32_csky_create_or_find_stub_sec (&link_sec, section, htab); | |
3381 | if (stub_sec == NULL) | |
3382 | return NULL; | |
3383 | ||
3384 | /* Enter this entry into the linker stub hash table. */ | |
3385 | stub_entry = csky_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
0a1b45a2 | 3386 | true, false); |
b8891f8d AJ |
3387 | if (stub_entry == NULL) |
3388 | { | |
3389 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), | |
3390 | section->owner, stub_name); | |
3391 | return NULL; | |
3392 | } | |
3393 | ||
3394 | stub_entry->stub_sec = stub_sec; | |
3395 | stub_entry->stub_offset = 0; | |
3396 | stub_entry->id_sec = link_sec; | |
3397 | ||
3398 | return stub_entry; | |
3399 | } | |
3400 | ||
3401 | /* Determine and set the size of the stub section for a final link. | |
3402 | The basic idea here is to examine all the relocations looking for | |
3403 | PC-relative calls to a target that is unreachable with a "bsr" | |
3404 | instruction. */ | |
3405 | ||
0a1b45a2 | 3406 | bool |
b8891f8d AJ |
3407 | elf32_csky_size_stubs (bfd *output_bfd, |
3408 | bfd *stub_bfd, | |
3409 | struct bfd_link_info *info, | |
3410 | bfd_signed_vma group_size, | |
3411 | asection *(*add_stub_section) (const char*, asection*), | |
3412 | void (*layout_sections_again) (void)) | |
3413 | { | |
3414 | bfd_size_type stub_group_size; | |
0a1b45a2 | 3415 | bool stubs_always_after_branch; |
b8891f8d AJ |
3416 | struct csky_elf_link_hash_table *htab = csky_elf_hash_table (info); |
3417 | ||
3418 | if (htab == NULL) | |
0a1b45a2 | 3419 | return false; |
b8891f8d AJ |
3420 | |
3421 | /* Propagate mach to stub bfd, because it may not have been | |
3422 | finalized when we created stub_bfd. */ | |
3423 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3424 | bfd_get_mach (output_bfd)); | |
3425 | ||
3426 | /* Stash our params away. */ | |
3427 | htab->stub_bfd = stub_bfd; | |
3428 | htab->add_stub_section = add_stub_section; | |
3429 | htab->layout_sections_again = layout_sections_again; | |
3430 | stubs_always_after_branch = group_size < 0; | |
3431 | ||
3432 | if (group_size < 0) | |
3433 | stub_group_size = -group_size; | |
3434 | else | |
3435 | stub_group_size = group_size; | |
3436 | ||
3437 | if (stub_group_size == 1) | |
3438 | /* The 'bsr' range in abiv2 is +-64MB has to be used as the | |
3439 | default maximum size. | |
3440 | This value is 128K less than that, which allows for 131072 | |
3441 | byte stubs. If we exceed that, then we will fail to link. | |
3442 | The user will have to relink with an explicit group size | |
3443 | option. */ | |
3444 | stub_group_size = 66977792; | |
3445 | ||
3446 | group_sections (htab, stub_group_size, stubs_always_after_branch); | |
3447 | ||
3448 | while (1) | |
3449 | { | |
3450 | bfd *input_bfd; | |
3451 | unsigned int bfd_indx; | |
3452 | asection *stub_sec; | |
0a1b45a2 | 3453 | bool stub_changed = false; |
b8891f8d AJ |
3454 | |
3455 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
3456 | input_bfd != NULL; | |
3457 | input_bfd = input_bfd->link.next, bfd_indx++) | |
3458 | { | |
3459 | Elf_Internal_Shdr *symtab_hdr; | |
3460 | asection *section; | |
3461 | Elf_Internal_Sym *local_syms = NULL; | |
3462 | ||
3463 | /* We'll need the symbol table in a second. */ | |
3464 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3465 | if (symtab_hdr->sh_info == 0) | |
3466 | continue; | |
3467 | ||
3468 | /* Walk over each section attached to the input bfd. */ | |
3469 | for (section = input_bfd->sections; | |
3470 | section != NULL; | |
3471 | section = section->next) | |
3472 | { | |
3473 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3474 | ||
3475 | /* If there aren't any relocs, then there's nothing more | |
3476 | * to do. */ | |
3477 | if ((section->flags & SEC_RELOC) == 0 | |
3478 | || section->reloc_count == 0 | |
3479 | || (section->flags & SEC_CODE) == 0) | |
3480 | continue; | |
3481 | ||
3482 | /* If this section is a link-once section that will be | |
3483 | discarded, then don't create any stubs. */ | |
3484 | if (section->output_section == NULL | |
3485 | || section->output_section->owner != output_bfd) | |
3486 | continue; | |
3487 | ||
3488 | /* Get the relocs. */ | |
3489 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, | |
3490 | section, | |
3491 | NULL, NULL, | |
3492 | info->keep_memory); | |
3493 | ||
3494 | if (internal_relocs == NULL) | |
3495 | goto error_ret_free_local; | |
3496 | ||
3497 | /* Now examine each relocation. */ | |
3498 | irela = internal_relocs; | |
3499 | irelaend = irela + section->reloc_count; | |
3500 | for (; irela < irelaend; irela++) | |
3501 | { | |
3502 | unsigned int r_type, r_indx; | |
3503 | enum elf32_csky_stub_type stub_type; | |
3504 | struct elf32_csky_stub_hash_entry *stub_entry; | |
3505 | asection *sym_sec; | |
3506 | bfd_vma sym_value; | |
3507 | bfd_vma destination; | |
3508 | struct csky_elf_link_hash_entry *hash; | |
3509 | const char *sym_name; | |
3510 | char *stub_name; | |
3511 | const asection *id_sec; | |
3512 | unsigned char st_type; | |
3513 | ||
3514 | r_type = ELF32_R_TYPE (irela->r_info); | |
3515 | r_indx = ELF32_R_SYM (irela->r_info); | |
3516 | if (r_type >= (unsigned int) R_CKCORE_MAX) | |
3517 | { | |
3518 | bfd_set_error (bfd_error_bad_value); | |
dc1e8a47 | 3519 | error_ret_free_internal: |
b8891f8d AJ |
3520 | if (elf_section_data (section)->relocs == NULL) |
3521 | free (internal_relocs); | |
3522 | goto error_ret_free_local; | |
3523 | } | |
3524 | ||
3525 | /* Only look for stubs on branch instructions. */ | |
3526 | if (r_type != (unsigned int) R_CKCORE_PCREL_IMM26BY2) | |
3527 | continue; | |
3528 | /* Now determine the call target, its name, value, | |
3529 | section. */ | |
3530 | sym_sec = NULL; | |
3531 | sym_value = 0; | |
3532 | destination = 0; | |
3533 | hash = NULL; | |
3534 | sym_name = NULL; | |
3535 | if (r_indx < symtab_hdr->sh_info) | |
3536 | { | |
3537 | /* It's a local symbol. */ | |
3538 | Elf_Internal_Sym *sym; | |
3539 | Elf_Internal_Shdr *hdr; | |
3540 | if (local_syms == NULL) | |
3541 | local_syms = | |
3542 | (Elf_Internal_Sym *) symtab_hdr->contents; | |
3543 | if (local_syms == NULL) | |
3544 | { | |
3545 | local_syms = | |
3546 | bfd_elf_get_elf_syms (input_bfd, | |
3547 | symtab_hdr, | |
3548 | symtab_hdr->sh_info, | |
3549 | 0, NULL, NULL, NULL); | |
3550 | if (local_syms == NULL) | |
3551 | goto error_ret_free_internal; | |
3552 | } | |
3553 | sym = local_syms + r_indx; | |
3554 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3555 | sym_sec = hdr->bfd_section; | |
3556 | if (!sym_sec) | |
3557 | /* This is an undefined symbol. It can never | |
3558 | be resolved. */ | |
3559 | continue; | |
3560 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3561 | sym_value = sym->st_value; | |
3562 | destination = (sym_value + irela->r_addend | |
3563 | + sym_sec->output_offset | |
3564 | + sym_sec->output_section->vma); | |
3565 | st_type = ELF_ST_TYPE (sym->st_info); | |
3566 | sym_name = | |
3567 | bfd_elf_string_from_elf_section (input_bfd, | |
3568 | symtab_hdr->sh_link, | |
3569 | sym->st_name); | |
3570 | } | |
3571 | else | |
3572 | { | |
3573 | /* It's an external symbol. */ | |
3574 | int e_indx; | |
3575 | e_indx = r_indx - symtab_hdr->sh_info; | |
3576 | hash = ((struct csky_elf_link_hash_entry *) | |
3577 | elf_sym_hashes (input_bfd)[e_indx]); | |
3578 | ||
3579 | while (hash->elf.root.type == bfd_link_hash_indirect | |
3580 | || hash->elf.root.type == bfd_link_hash_warning) | |
3581 | hash = ((struct csky_elf_link_hash_entry *) | |
3582 | hash->elf.root.u.i.link); | |
3583 | if (hash->elf.root.type == bfd_link_hash_defined | |
3584 | || hash->elf.root.type == bfd_link_hash_defweak) | |
3585 | { | |
3586 | sym_sec = hash->elf.root.u.def.section; | |
3587 | sym_value = hash->elf.root.u.def.value; | |
3588 | ||
3589 | struct csky_elf_link_hash_table *globals = | |
3590 | csky_elf_hash_table (info); | |
3591 | /* FIXME For a destination in a shared library. */ | |
3592 | if (globals->elf.splt != NULL && hash != NULL | |
3593 | && hash->elf.plt.offset != (bfd_vma) -1) | |
3594 | continue; | |
3595 | else if (sym_sec->output_section != NULL) | |
3596 | destination = (sym_value + irela->r_addend | |
3597 | + sym_sec->output_offset | |
3598 | + sym_sec->output_section->vma); | |
3599 | } | |
3600 | else if (hash->elf.root.type == bfd_link_hash_undefined | |
3601 | || (hash->elf.root.type | |
3602 | == bfd_link_hash_undefweak)) | |
3603 | /* FIXME For a destination in a shared library. */ | |
3604 | continue; | |
3605 | else | |
3606 | { | |
3607 | bfd_set_error (bfd_error_bad_value); | |
3608 | goto error_ret_free_internal; | |
3609 | } | |
3610 | st_type = ELF_ST_TYPE (hash->elf.type); | |
3611 | sym_name = hash->elf.root.root.string; | |
3612 | } | |
3613 | do | |
3614 | { | |
3615 | /* Determine what (if any) linker stub is needed. */ | |
3616 | stub_type = csky_type_of_stub (info, section, irela, | |
3617 | st_type, hash, | |
3618 | destination, sym_sec, | |
3619 | input_bfd, sym_name); | |
3620 | if (stub_type == csky_stub_none) | |
3621 | break; | |
3622 | ||
3623 | /* Support for grouping stub sections. */ | |
3624 | id_sec = htab->stub_group[section->id].link_sec; | |
3625 | ||
3626 | /* Get the name of this stub. */ | |
3627 | stub_name = elf32_csky_stub_name (id_sec, sym_sec, hash, | |
3628 | irela); | |
3629 | if (!stub_name) | |
3630 | goto error_ret_free_internal; | |
3631 | /* We've either created a stub for this reloc already, | |
3632 | or we are about to. */ | |
3633 | stub_entry | |
3634 | = csky_stub_hash_lookup (&htab->stub_hash_table, | |
3635 | stub_name, | |
0a1b45a2 | 3636 | false, false); |
b8891f8d AJ |
3637 | if (stub_entry != NULL) |
3638 | { | |
3639 | /* The proper stub has already been created. */ | |
3640 | free (stub_name); | |
3641 | stub_entry->target_value = sym_value; | |
3642 | break; | |
3643 | } | |
3644 | stub_entry = elf32_csky_add_stub (stub_name, section, | |
3645 | htab); | |
3646 | if (stub_entry == NULL) | |
3647 | { | |
3648 | free (stub_name); | |
3649 | goto error_ret_free_internal; | |
3650 | } | |
3651 | stub_entry->target_value = sym_value; | |
3652 | stub_entry->target_section = sym_sec; | |
3653 | stub_entry->stub_type = stub_type; | |
3654 | stub_entry->h = hash; | |
3655 | stub_entry->st_type = st_type; | |
3656 | ||
3657 | if (sym_name == NULL) | |
3658 | sym_name = "unnamed"; | |
3659 | stub_entry->output_name = | |
3660 | bfd_alloc (htab->stub_bfd, | |
3661 | (sizeof (STUB_ENTRY_NAME) | |
3662 | + strlen (sym_name))); | |
3663 | if (stub_entry->output_name == NULL) | |
3664 | { | |
3665 | free (stub_name); | |
3666 | goto error_ret_free_internal; | |
3667 | } | |
3668 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, | |
3669 | sym_name); | |
0a1b45a2 | 3670 | stub_changed = true; |
b8891f8d AJ |
3671 | } |
3672 | while (0); | |
3673 | } | |
3674 | /* We're done with the internal relocs, free them. */ | |
3675 | if (elf_section_data (section)->relocs == NULL) | |
3676 | free (internal_relocs); | |
3677 | } | |
3678 | } | |
3679 | if (!stub_changed) | |
3680 | break; | |
3681 | /* OK, we've added some stubs. Find out the new size of the | |
3682 | stub sections. */ | |
3683 | for (stub_sec = htab->stub_bfd->sections; | |
3684 | stub_sec != NULL; | |
3685 | stub_sec = stub_sec->next) | |
3686 | { | |
3687 | /* Ignore non-stub sections. */ | |
3688 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3689 | continue; | |
3690 | stub_sec->size = 0; | |
3691 | } | |
3692 | bfd_hash_traverse (&htab->stub_hash_table, csky_size_one_stub, htab); | |
3693 | /* Ask the linker to do its stuff. */ | |
3694 | (*htab->layout_sections_again) (); | |
3695 | } | |
3696 | ||
0a1b45a2 | 3697 | return true; |
dc1e8a47 | 3698 | error_ret_free_local: |
0a1b45a2 | 3699 | return false; |
b8891f8d AJ |
3700 | } |
3701 | ||
0a1b45a2 | 3702 | static bool |
b8891f8d AJ |
3703 | csky_build_one_stub (struct bfd_hash_entry *gen_entry, |
3704 | void * in_arg) | |
3705 | { | |
3706 | #define MAXRELOCS 2 | |
3707 | struct elf32_csky_stub_hash_entry *stub_entry; | |
3708 | struct bfd_link_info *info; | |
3709 | asection *stub_sec; | |
3710 | bfd *stub_bfd; | |
3711 | bfd_byte *loc; | |
3712 | bfd_vma sym_value; | |
3713 | int template_size; | |
3714 | int size; | |
3715 | const insn_sequence *template_sequence; | |
3716 | int i; | |
3717 | struct csky_elf_link_hash_table * globals; | |
3718 | int stub_reloc_idx[MAXRELOCS] = {-1, -1}; | |
3719 | int stub_reloc_offset[MAXRELOCS] = {0, 0}; | |
3720 | int nrelocs = 0; | |
3721 | struct elf_link_hash_entry *h = NULL; | |
3722 | ||
3723 | /* Massage our args to the form they really have. */ | |
3724 | stub_entry = (struct elf32_csky_stub_hash_entry *)gen_entry; | |
3725 | info = (struct bfd_link_info *) in_arg; | |
3726 | ||
abf874aa CL |
3727 | /* Fail if the target section could not be assigned to an output |
3728 | section. The user should fix his linker script. */ | |
3729 | if (stub_entry->target_section->output_section == NULL | |
3730 | && info->non_contiguous_regions) | |
c63d4862 | 3731 | info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. " |
53215f21 CL |
3732 | "Retry without --enable-non-contiguous-regions.\n"), |
3733 | stub_entry->target_section); | |
abf874aa | 3734 | |
b8891f8d AJ |
3735 | globals = csky_elf_hash_table (info); |
3736 | if (globals == NULL) | |
0a1b45a2 | 3737 | return false; |
b8891f8d AJ |
3738 | stub_sec = stub_entry->stub_sec; |
3739 | ||
3740 | /* Make a note of the offset within the stubs for this entry. */ | |
3741 | stub_entry->stub_offset = stub_sec->size; | |
3742 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3743 | ||
3744 | stub_bfd = stub_sec->owner; | |
3745 | ||
3746 | /* This is the address of the stub destination. */ | |
3747 | h = &stub_entry->h->elf; | |
3748 | if (sym_must_create_stub (h, info) | |
3749 | && !(bfd_link_pic (info) | |
3750 | && h->root.type == bfd_link_hash_defweak | |
3751 | && h->def_regular | |
3752 | && !h->def_dynamic)) | |
3753 | sym_value = 0; | |
3754 | else | |
3755 | sym_value = (stub_entry->target_value | |
3756 | + stub_entry->target_section->output_offset | |
3757 | + stub_entry->target_section->output_section->vma); | |
3758 | ||
3759 | template_sequence = stub_entry->stub_template; | |
3760 | template_size = stub_entry->stub_template_size; | |
3761 | ||
3762 | size = 0; | |
3763 | for (i = 0; i < template_size; i++) | |
3764 | switch (template_sequence[i].type) | |
3765 | { | |
3766 | case INSN16: | |
3767 | bfd_put_16 (stub_bfd, (bfd_vma) template_sequence[i].data, | |
3768 | loc + size); | |
3769 | size += 2; | |
3770 | break; | |
3771 | case INSN32: | |
3772 | csky_put_insn_32 (stub_bfd, (bfd_vma) template_sequence[i].data, | |
3773 | loc + size); | |
3774 | size += 4; | |
3775 | break; | |
3776 | case DATA_TYPE: | |
3777 | bfd_put_32 (stub_bfd, (bfd_vma) template_sequence[i].data, | |
3778 | loc + size); | |
3779 | stub_reloc_idx[nrelocs] = i; | |
3780 | stub_reloc_offset[nrelocs++] = size; | |
3781 | size += 4; | |
3782 | break; | |
3783 | default: | |
3784 | BFD_FAIL (); | |
0a1b45a2 | 3785 | return false; |
b8891f8d AJ |
3786 | } |
3787 | stub_sec->size += size; | |
3788 | ||
3789 | /* Stub size has already been computed in csky_size_one_stub. Check | |
3790 | consistency. */ | |
3791 | BFD_ASSERT (size == stub_entry->stub_size); | |
3792 | ||
3793 | /* Assume there is at least one and at most MAXRELOCS entries to relocate | |
3794 | in each stub. */ | |
3795 | BFD_ASSERT (nrelocs != 0 && nrelocs <= MAXRELOCS); | |
3796 | ||
3797 | for (i = 0; i < nrelocs; i++) | |
3798 | { | |
3799 | if (sym_must_create_stub (h, info)) | |
3800 | { | |
3801 | Elf_Internal_Rela outrel; | |
3802 | asection * sreloc = globals->elf.srelgot; | |
3803 | ||
3804 | outrel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i]; | |
3805 | outrel.r_info = | |
3806 | ELF32_R_INFO (h->dynindx, | |
3807 | template_sequence[stub_reloc_idx[i]].r_type); | |
3808 | outrel.r_addend = template_sequence[stub_reloc_idx[i]].reloc_addend; | |
3809 | ||
3810 | loc = sreloc->contents; | |
3811 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3812 | ||
3813 | if (loc != NULL) | |
3814 | bfd_elf32_swap_reloca_out (info->output_bfd, &outrel, loc); | |
3815 | } | |
3816 | _bfd_final_link_relocate (elf32_csky_howto_from_type | |
3817 | (template_sequence[stub_reloc_idx[i]].r_type), | |
3818 | stub_bfd, stub_sec, stub_sec->contents, | |
3819 | stub_entry->stub_offset + stub_reloc_offset[i], | |
3820 | sym_value + stub_entry->target_addend, | |
3821 | template_sequence[stub_reloc_idx[i]].reloc_addend); | |
3822 | } | |
3823 | ||
0a1b45a2 | 3824 | return true; |
b8891f8d AJ |
3825 | #undef MAXRELOCS |
3826 | } | |
3827 | ||
3828 | /* Build all the stubs associated with the current output file. The | |
3829 | stubs are kept in a hash table attached to the main linker hash | |
3830 | table. We also set up the .plt entries for statically linked PIC | |
3831 | functions here. This function is called via arm_elf_finish in the | |
3832 | linker. */ | |
3833 | ||
0a1b45a2 | 3834 | bool |
b8891f8d AJ |
3835 | elf32_csky_build_stubs (struct bfd_link_info *info) |
3836 | { | |
3837 | asection *stub_sec; | |
3838 | struct bfd_hash_table *table; | |
3839 | struct csky_elf_link_hash_table *htab; | |
3840 | ||
3841 | htab = csky_elf_hash_table (info); | |
3842 | ||
3843 | if (htab == NULL) | |
0a1b45a2 | 3844 | return false; |
b8891f8d AJ |
3845 | |
3846 | for (stub_sec = htab->stub_bfd->sections; | |
3847 | stub_sec != NULL; | |
3848 | stub_sec = stub_sec->next) | |
3849 | { | |
3850 | bfd_size_type size; | |
3851 | ||
3852 | /* Ignore non-stub sections. */ | |
3853 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3854 | continue; | |
3855 | ||
3856 | /* Allocate memory to hold the linker stubs. */ | |
3857 | size = stub_sec->size; | |
3858 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
3859 | if (stub_sec->contents == NULL && size != 0) | |
0a1b45a2 | 3860 | return false; |
b8891f8d AJ |
3861 | stub_sec->size = 0; |
3862 | } | |
3863 | ||
3864 | /* Build the stubs as directed by the stub hash table. */ | |
3865 | table = &htab->stub_hash_table; | |
3866 | bfd_hash_traverse (table, csky_build_one_stub, info); | |
3867 | ||
0a1b45a2 | 3868 | return true; |
b8891f8d AJ |
3869 | } |
3870 | ||
3871 | /* Set up various things so that we can make a list of input sections | |
3872 | for each output section included in the link. Returns -1 on error, | |
3873 | 0 when no stubs will be needed, and 1 on success. */ | |
3874 | ||
3875 | int | |
3876 | elf32_csky_setup_section_lists (bfd *output_bfd, | |
3877 | struct bfd_link_info *info) | |
3878 | { | |
3879 | bfd *input_bfd; | |
3880 | unsigned int bfd_count; | |
3881 | unsigned int top_id, top_index; | |
3882 | asection *section; | |
3883 | asection **input_list, **list; | |
986f0783 | 3884 | size_t amt; |
b8891f8d AJ |
3885 | struct csky_elf_link_hash_table *htab = csky_elf_hash_table (info); |
3886 | ||
3887 | if (!htab) | |
3888 | return 0; | |
b8891f8d AJ |
3889 | |
3890 | /* Count the number of input BFDs and find the top input section id. */ | |
3891 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
3892 | input_bfd != NULL; | |
3893 | input_bfd = input_bfd->link.next) | |
3894 | { | |
3895 | bfd_count += 1; | |
3896 | for (section = input_bfd->sections; | |
3897 | section != NULL; | |
3898 | section = section->next) | |
3899 | if (top_id < section->id) | |
3900 | top_id = section->id; | |
3901 | } | |
3902 | htab->bfd_count = bfd_count; | |
3903 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3904 | htab->stub_group = bfd_zmalloc (amt); | |
3905 | if (htab->stub_group == NULL) | |
3906 | return -1; | |
3907 | ||
3908 | /* We can't use output_bfd->section_count here to find the top output | |
3909 | section index as some sections may have been removed, and | |
3910 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3911 | for (section = output_bfd->sections, top_index = 0; | |
3912 | section != NULL; | |
3913 | section = section->next) | |
3914 | if (top_index < section->index) | |
3915 | top_index = section->index; | |
3916 | htab->top_index = top_index; | |
3917 | amt = sizeof (asection *) * (top_index + 1); | |
3918 | input_list = bfd_malloc (amt); | |
3919 | htab->input_list = input_list; | |
3920 | if (input_list == NULL) | |
3921 | return -1; | |
3922 | /* For sections we aren't interested in, mark their entries with a | |
3923 | value we can check later. */ | |
3924 | list = input_list + top_index; | |
3925 | do | |
3926 | *list = bfd_abs_section_ptr; | |
3927 | while (list-- != input_list); | |
3928 | for (section = output_bfd->sections; | |
3929 | section != NULL; | |
3930 | section = section->next) | |
3931 | if ((section->flags & SEC_CODE) != 0) | |
3932 | input_list[section->index] = NULL; | |
3933 | ||
3934 | return 1; | |
3935 | } | |
3936 | ||
3937 | static bfd_reloc_status_type | |
3938 | csky_relocate_contents (reloc_howto_type *howto, | |
3939 | bfd *input_bfd, | |
f2173852 | 3940 | bfd_vma relocation, |
b8891f8d AJ |
3941 | bfd_byte *location) |
3942 | { | |
3943 | int size; | |
3944 | bfd_vma x = 0; | |
3945 | bfd_reloc_status_type flag; | |
3946 | unsigned int rightshift = howto->rightshift; | |
3947 | unsigned int bitpos = howto->bitpos; | |
3948 | ||
fde0214a | 3949 | if (howto->negate) |
b8891f8d AJ |
3950 | relocation = -relocation; |
3951 | ||
3952 | /* FIXME: these macros should be defined at file head or head file head. */ | |
3953 | #define CSKY_INSN_ADDI_TO_SUBI 0x04000000 | |
279edac5 AM |
3954 | #define CSKY_INSN_MOV_RTB 0xc41d4820 /* mov32 rx, r29, 0 */ |
3955 | #define CSKY_INSN_MOV_RDB 0xc41c4820 /* mov32 rx, r28, 0 */ | |
b8891f8d AJ |
3956 | #define CSKY_INSN_GET_ADDI_RZ(x) (((x) & 0x03e00000) >> 21) |
3957 | #define CSKY_INSN_SET_MOV_RZ(x) ((x) & 0x0000001f) | |
3958 | #define CSKY_INSN_JSRI_TO_LRW 0xea9a0000 | |
3959 | #define CSKY_INSN_JSR_R26 0xe8fa0000 | |
3960 | ||
3961 | /* Get the value we are going to relocate. */ | |
3962 | size = bfd_get_reloc_size (howto); | |
3963 | switch (size) | |
3964 | { | |
3965 | default: | |
3966 | case 0: | |
3967 | abort (); | |
3968 | case 1: | |
3969 | x = bfd_get_8 (input_bfd, location); | |
3970 | break; | |
3971 | case 2: | |
3972 | x = bfd_get_16 (input_bfd, location); | |
3973 | break; | |
3974 | case 4: | |
3975 | if (need_reverse_bits) | |
3976 | { | |
3977 | x = csky_get_insn_32 (input_bfd, location); | |
3978 | ||
3979 | if (R_CKCORE_DOFFSET_LO16 == howto->type) | |
3980 | { | |
f2173852 | 3981 | if ((bfd_signed_vma) relocation < 0) |
b8891f8d AJ |
3982 | { |
3983 | x |= CSKY_INSN_ADDI_TO_SUBI; | |
3984 | relocation = -relocation; | |
3985 | } | |
3986 | else if (0 == relocation) | |
3987 | x = (CSKY_INSN_MOV_RDB | | |
3988 | CSKY_INSN_SET_MOV_RZ (CSKY_INSN_GET_ADDI_RZ (x))); | |
3989 | } | |
3990 | else if (R_CKCORE_TOFFSET_LO16 == howto->type) | |
3991 | { | |
f2173852 | 3992 | if ((bfd_signed_vma) relocation < 0) |
b8891f8d AJ |
3993 | { |
3994 | x |= CSKY_INSN_ADDI_TO_SUBI; | |
3995 | relocation = -relocation; | |
3996 | } | |
3997 | else if (0 == relocation) | |
3998 | x = (CSKY_INSN_MOV_RTB | | |
3999 | CSKY_INSN_SET_MOV_RZ (CSKY_INSN_GET_ADDI_RZ (x))); | |
4000 | } | |
4001 | } | |
4002 | else | |
4003 | x = bfd_get_32 (input_bfd, location); | |
4004 | break; | |
4005 | } | |
4006 | /* Check for overflow. FIXME: We may drop bits during the addition | |
4007 | which we don't check for. We must either check at every single | |
4008 | operation, which would be tedious, or we must do the computations | |
4009 | in a type larger than bfd_vma, which would be inefficient. */ | |
4010 | flag = bfd_reloc_ok; | |
4011 | if (howto->complain_on_overflow != complain_overflow_dont) | |
4012 | { | |
f2173852 AM |
4013 | bfd_vma addrmask; |
4014 | bfd_vma fieldmask; | |
4015 | bfd_vma signmask; | |
4016 | bfd_vma ss; | |
4017 | bfd_vma a; | |
4018 | bfd_vma b; | |
4019 | bfd_vma sum; | |
b8891f8d AJ |
4020 | /* Get the values to be added together. For signed and unsigned |
4021 | relocations, we assume that all values should be truncated to | |
4022 | the size of an address. For bitfields, all the bits matter. | |
4023 | See also bfd_check_overflow. */ | |
4024 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) | |
4025 | fieldmask = N_ONES (howto->bitsize); | |
4026 | signmask = ~fieldmask; | |
4027 | addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask; | |
4028 | a = (relocation & addrmask) >> rightshift; | |
4029 | if (read_content_substitute) | |
4030 | x = read_content_substitute; | |
4031 | b = (x & howto->src_mask & addrmask) >> bitpos; | |
4032 | ||
4033 | switch (howto->complain_on_overflow) | |
4034 | { | |
4035 | case complain_overflow_signed: | |
4036 | /* If any sign bits are set, all sign bits must be set. | |
4037 | That is, A must be a valid negative address after | |
4038 | shifting. */ | |
4039 | signmask = ~(fieldmask >> 1); | |
4040 | /* Fall through. */ | |
4041 | ||
4042 | case complain_overflow_bitfield: | |
4043 | /* Much like the signed check, but for a field one bit | |
4044 | wider. We allow a bitfield to represent numbers in the | |
4045 | range -2**n to 2**n-1, where n is the number of bits in the | |
4046 | field. Note that when bfd_vma is 32 bits, a 32-bit reloc | |
4047 | can't overflow, which is exactly what we want. */ | |
4048 | ss = a & signmask; | |
4049 | if (ss != 0 && ss != ((addrmask >> rightshift) & signmask)) | |
4050 | flag = bfd_reloc_overflow; | |
4051 | /* We only need this next bit of code if the sign bit of B | |
4052 | is below the sign bit of A. This would only happen if | |
4053 | SRC_MASK had fewer bits than BITSIZE. Note that if | |
4054 | SRC_MASK has more bits than BITSIZE, we can get into | |
4055 | trouble; we would need to verify that B is in range, as | |
4056 | we do for A above. */ | |
4057 | ss = ((~howto->src_mask) >> 1) & howto->src_mask; | |
4058 | ss >>= bitpos; | |
4059 | ||
4060 | /* Set all the bits above the sign bit. */ | |
4061 | b = (b ^ ss) - ss; | |
4062 | ||
4063 | /* Now we can do the addition. */ | |
4064 | sum = a + b; | |
4065 | ||
4066 | /* See if the result has the correct sign. Bits above the | |
4067 | sign bit are junk now; ignore them. If the sum is | |
4068 | positive, make sure we did not have all negative inputs; | |
4069 | if the sum is negative, make sure we did not have all | |
4070 | positive inputs. The test below looks only at the sign | |
4071 | bits, and it really just | |
4072 | SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM) | |
4073 | ||
4074 | We mask with addrmask here to explicitly allow an address | |
4075 | wrap-around. The Linux kernel relies on it, and it is | |
4076 | the only way to write assembler code which can run when | |
4077 | loaded at a location 0x80000000 away from the location at | |
4078 | which it is linked. */ | |
4079 | ||
4080 | if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask) | |
4081 | flag = bfd_reloc_overflow; | |
4082 | break; | |
4083 | case complain_overflow_unsigned: | |
4084 | /* Checking for an unsigned overflow is relatively easy: | |
4085 | trim the addresses and add, and trim the result as well. | |
4086 | Overflow is normally indicated when the result does not | |
4087 | fit in the field. However, we also need to consider the | |
4088 | case when, e.g., fieldmask is 0x7fffffff or smaller, an | |
4089 | input is 0x80000000, and bfd_vma is only 32 bits; then we | |
4090 | will get sum == 0, but there is an overflow, since the | |
4091 | inputs did not fit in the field. Instead of doing a | |
4092 | separate test, we can check for this by or-ing in the | |
4093 | operands when testing for the sum overflowing its final | |
4094 | field. */ | |
4095 | sum = (a + b) & addrmask; | |
4096 | if ((a | b | sum) & signmask) | |
4097 | flag = bfd_reloc_overflow; | |
4098 | break; | |
4099 | default: | |
4100 | abort (); | |
4101 | } | |
4102 | ||
4103 | } | |
4104 | /* Put RELOCATION in the right bits. */ | |
f2173852 | 4105 | relocation >>= rightshift; |
b8891f8d AJ |
4106 | |
4107 | if ((howto->type == R_CKCORE_DOFFSET_LO16 | |
4108 | || howto->type == R_CKCORE_TOFFSET_LO16) | |
4109 | && relocation == 0) | |
4110 | /* Do nothing lsli32 rx, rz, 0. */ | |
4111 | ; | |
4112 | else | |
4113 | { | |
4114 | /* Fir V1, all this relocation must be x -1. */ | |
4115 | if (howto->type == R_CKCORE_PCREL_IMM11BY2 | |
4116 | || howto->type == R_CKCORE_PCREL_JSR_IMM11BY2 | |
4117 | || howto->type == R_CKCORE_DOFFSET_LO16 | |
4118 | || howto->type == R_CKCORE_TOFFSET_LO16) | |
4119 | relocation -= 1; | |
4120 | else if (howto->type == R_CKCORE_PCREL_IMM7BY4) | |
4121 | relocation = (relocation & 0x1f) + ((relocation << 3) & 0x300); | |
4122 | else if (howto->type == R_CKCORE_PCREL_FLRW_IMM8BY4) | |
4123 | relocation | |
4124 | = ((relocation << 4) & 0xf0) + ((relocation << 17) & 0x1e00000); | |
4125 | else if (howto->type == R_CKCORE_NOJSRI) | |
4126 | { | |
4127 | x = (x & howto->dst_mask) | CSKY_INSN_JSRI_TO_LRW; | |
4128 | relocation = 0; | |
4129 | csky_put_insn_32 (input_bfd, CSKY_INSN_JSR_R26, location + 4); | |
4130 | } | |
4131 | ||
f2173852 | 4132 | relocation <<= bitpos; |
b8891f8d AJ |
4133 | /* Add RELOCATION to the right bits of X. */ |
4134 | x = ((x & ~howto->dst_mask) | |
4135 | | (((x & howto->src_mask) + relocation) & howto->dst_mask)); | |
4136 | } | |
4137 | /* Put the relocated value back in the object file. */ | |
4138 | switch (size) | |
4139 | { | |
4140 | default: | |
4141 | abort (); | |
4142 | case 1: | |
4143 | bfd_put_8 (input_bfd, x, location); | |
4144 | break; | |
4145 | case 2: | |
4146 | bfd_put_16 (input_bfd, x, location); | |
4147 | break; | |
4148 | case 4: | |
4149 | if (need_reverse_bits) | |
4150 | csky_put_insn_32 (input_bfd, x, location); | |
4151 | else | |
4152 | bfd_put_32 (input_bfd, x, location); | |
4153 | break; | |
4154 | } | |
4155 | return flag; | |
4156 | } | |
4157 | ||
4158 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4159 | creating the stub name takes a bit of time. */ | |
4160 | ||
4161 | static struct elf32_csky_stub_hash_entry * | |
4162 | elf32_csky_get_stub_entry (const asection *input_section, | |
4163 | const asection *sym_sec, | |
4164 | struct elf_link_hash_entry *hash, | |
4165 | const Elf_Internal_Rela *rel, | |
4166 | struct csky_elf_link_hash_table *htab) | |
4167 | { | |
4168 | struct elf32_csky_stub_hash_entry *stub_entry; | |
4169 | struct csky_elf_link_hash_entry *h | |
4170 | = (struct csky_elf_link_hash_entry *) hash; | |
4171 | const asection *id_sec; | |
4172 | ||
4173 | if ((input_section->flags & SEC_CODE) == 0) | |
4174 | return NULL; | |
4175 | ||
4176 | /* If this input section is part of a group of sections sharing one | |
4177 | stub section, then use the id of the first section in the group. | |
4178 | Stub names need to include a section id, as there may well be | |
4179 | more than one stub used to reach say, printf, and we need to | |
4180 | distinguish between them. */ | |
4181 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4182 | if (h != NULL && h->stub_cache != NULL | |
4183 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
4184 | stub_entry = h->stub_cache; | |
4185 | else | |
4186 | { | |
4187 | char *stub_name; | |
4188 | stub_name = elf32_csky_stub_name (id_sec, sym_sec, h, rel); | |
4189 | if (stub_name == NULL) | |
4190 | return NULL; | |
4191 | stub_entry = csky_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 4192 | stub_name, false, false); |
b8891f8d AJ |
4193 | if (h != NULL) |
4194 | h->stub_cache = stub_entry; | |
4195 | free (stub_name); | |
4196 | } | |
4197 | ||
4198 | return stub_entry; | |
4199 | } | |
4200 | ||
4201 | static bfd_reloc_status_type | |
4202 | csky_final_link_relocate (reloc_howto_type *howto, | |
4203 | bfd *input_bfd, | |
4204 | asection *input_section, | |
4205 | bfd_byte *contents, | |
4206 | bfd_vma address, | |
4207 | bfd_vma value, | |
4208 | bfd_vma addend) | |
4209 | { | |
4210 | bfd_vma relocation; | |
4211 | ||
4212 | /* Sanity check the address. */ | |
4213 | if (address > bfd_get_section_limit (input_bfd, input_section)) | |
4214 | return bfd_reloc_outofrange; | |
4215 | ||
4216 | /* This function assumes that we are dealing with a basic relocation | |
4217 | against a symbol. We want to compute the value of the symbol to | |
4218 | relocate to. This is just VALUE, the value of the symbol, | |
4219 | plus ADDEND, any addend associated with the reloc. */ | |
4220 | relocation = value + addend; | |
4221 | ||
4222 | /* If the relocation is PC relative, we want to set RELOCATION to | |
4223 | the distance between the symbol (currently in RELOCATION) and the | |
4224 | location we are relocating. Some targets (e.g., i386-aout) | |
4225 | arrange for the contents of the section to be the negative of the | |
4226 | offset of the location within the section; for such targets | |
4227 | pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF) | |
4228 | simply leave the contents of the section as zero; for such | |
4229 | targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not | |
4230 | need to subtract out the offset of the location within the | |
4231 | section (which is just ADDRESS). */ | |
4232 | if (howto->pc_relative) | |
4233 | { | |
4234 | relocation -= (input_section->output_section->vma | |
4235 | + input_section->output_offset); | |
4236 | if (howto->pcrel_offset) | |
4237 | relocation -= address; | |
4238 | } | |
4239 | ||
4240 | return csky_relocate_contents (howto, input_bfd, relocation, | |
4241 | contents + address); | |
4242 | ||
4243 | } | |
4244 | ||
4245 | /* Return the base VMA address which should be subtracted from real addresses | |
4246 | when resolving @dtpoff relocation. | |
4247 | This is PT_TLS segment p_vaddr. */ | |
4248 | ||
4249 | static bfd_vma | |
4250 | dtpoff_base (struct bfd_link_info *info) | |
4251 | { | |
4252 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4253 | if (elf_hash_table (info)->tls_sec == NULL) | |
4254 | return 0; | |
4255 | return elf_hash_table (info)->tls_sec->vma; | |
4256 | } | |
4257 | ||
4258 | /* Return the relocation value for @tpoff relocation | |
4259 | if STT_TLS virtual address is ADDRESS. */ | |
4260 | ||
4261 | static bfd_vma | |
4262 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
4263 | { | |
4264 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4265 | bfd_vma base; | |
4266 | ||
4267 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4268 | if (htab->tls_sec == NULL) | |
4269 | return 0; | |
4270 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
4271 | return address - htab->tls_sec->vma + base; | |
4272 | } | |
4273 | ||
4274 | /* Relocate a csky section. */ | |
4275 | ||
0f684201 | 4276 | static int |
b8891f8d AJ |
4277 | csky_elf_relocate_section (bfd * output_bfd, |
4278 | struct bfd_link_info * info, | |
4279 | bfd * input_bfd, | |
4280 | asection * input_section, | |
4281 | bfd_byte * contents, | |
4282 | Elf_Internal_Rela * relocs, | |
4283 | Elf_Internal_Sym * local_syms, | |
4284 | asection ** local_sections) | |
4285 | { | |
4286 | Elf_Internal_Shdr *symtab_hdr; | |
4287 | struct elf_link_hash_entry **sym_hashes; | |
4288 | Elf_Internal_Rela *rel; | |
4289 | Elf_Internal_Rela *relend; | |
4290 | const char *name; | |
0a1b45a2 | 4291 | bool ret = true; |
b8891f8d AJ |
4292 | struct csky_elf_link_hash_table * htab; |
4293 | bfd_vma *local_got_offsets = elf_local_got_offsets (input_bfd); | |
4294 | ||
4295 | htab = csky_elf_hash_table (info); | |
4296 | if (htab == NULL) | |
0a1b45a2 | 4297 | return false; |
b8891f8d AJ |
4298 | |
4299 | symtab_hdr = & elf_symtab_hdr (input_bfd); | |
4300 | sym_hashes = elf_sym_hashes (input_bfd); | |
4301 | ||
4302 | rel = relocs; | |
4303 | relend = relocs + input_section->reloc_count; | |
4304 | for (; rel < relend; rel++) | |
4305 | { | |
0a1b45a2 | 4306 | enum elf_csky_reloc_type r_type |
b8891f8d | 4307 | = (enum elf_csky_reloc_type) ELF32_R_TYPE (rel->r_info); |
0a1b45a2 AM |
4308 | unsigned long r_symndx; |
4309 | reloc_howto_type *howto; | |
4310 | Elf_Internal_Sym *sym; | |
4311 | asection *sec; | |
4312 | bfd_vma relocation; | |
4313 | bfd_vma off; | |
b8891f8d | 4314 | struct elf_link_hash_entry * h; |
0a1b45a2 AM |
4315 | bfd_vma addend = (bfd_vma)rel->r_addend; |
4316 | bfd_reloc_status_type r = bfd_reloc_ok; | |
4317 | bool unresolved_reloc = false; | |
4318 | int do_final_relocate = true; | |
4319 | bool relative_reloc = false; | |
b8891f8d AJ |
4320 | bfd_signed_vma disp; |
4321 | ||
4322 | /* Ignore these relocation types: | |
4323 | R_CKCORE_GNU_VTINHERIT, R_CKCORE_GNU_VTENTRY. */ | |
4324 | if (r_type == R_CKCORE_GNU_VTINHERIT || r_type == R_CKCORE_GNU_VTENTRY) | |
4325 | continue; | |
4326 | ||
4327 | if ((unsigned) r_type >= (unsigned) R_CKCORE_MAX) | |
4328 | { | |
4329 | /* The r_type is error, not support it. */ | |
4330 | /* xgettext:c-format */ | |
4331 | _bfd_error_handler (_("%pB: unsupported relocation type: %#x"), | |
4332 | input_bfd, r_type); | |
4333 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 4334 | ret = false; |
b8891f8d AJ |
4335 | continue; |
4336 | } | |
4337 | ||
4338 | howto = &csky_elf_howto_table[(int) r_type]; | |
4339 | ||
4340 | r_symndx = ELF32_R_SYM(rel->r_info); | |
4341 | h = NULL; | |
4342 | sym = NULL; | |
4343 | sec = NULL; | |
0a1b45a2 | 4344 | unresolved_reloc = false; |
b8891f8d AJ |
4345 | |
4346 | if (r_symndx < symtab_hdr->sh_info) | |
4347 | { | |
4348 | /* Get symbol table entry. */ | |
4349 | sym = local_syms + r_symndx; | |
4350 | sec = local_sections[r_symndx]; | |
4351 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
4352 | addend = (bfd_vma)rel->r_addend; | |
4353 | } | |
4354 | else | |
4355 | { | |
0a1b45a2 | 4356 | bool warned, ignored; |
b8891f8d AJ |
4357 | |
4358 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4359 | r_symndx, symtab_hdr, sym_hashes, | |
4360 | h, sec, relocation, | |
4361 | unresolved_reloc, warned, ignored); | |
4362 | } | |
4363 | ||
4364 | if (sec != NULL && discarded_section (sec)) | |
4365 | { | |
4366 | /* For relocs against symbols from removed linkonce sections, | |
4367 | or sections discarded by a linker script, we just want the | |
4368 | section contents zeroed. Avoid any special processing. | |
4369 | And if the symbol is referenced in '.csky_stack_size' section, | |
4370 | set the address to SEC_DISCARDED(0xffffffff). */ | |
4371 | #if 0 | |
4372 | /* The .csky_stack_size section is just for callgraph. */ | |
4373 | if (strcmp (input_section->name, ".csky_stack_size") == 0) | |
4374 | { | |
4375 | /* FIXME: it should define in head file. */ | |
4376 | #define SEC_DISCARDED 0xffffffff | |
4377 | bfd_put_32 (input_bfd, SEC_DISCARDED, contents + rel->r_offset); | |
4378 | rel->r_info = 0; | |
4379 | rel->r_addend = 0; | |
4380 | continue; | |
4381 | } | |
4382 | else | |
4383 | #endif | |
4384 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
4385 | rel, 1, relend, howto, 0, | |
4386 | contents); | |
4387 | } | |
4388 | ||
4389 | if (bfd_link_relocatable (info)) | |
4390 | continue; | |
4391 | ||
4392 | read_content_substitute = 0; | |
4393 | ||
4394 | /* Final link. */ | |
4395 | disp = (relocation | |
4396 | + (bfd_signed_vma) addend | |
4397 | - input_section->output_section->vma | |
4398 | - input_section->output_offset | |
4399 | - rel->r_offset); | |
4400 | /* It is for ck8xx. */ | |
4401 | #define CSKY_INSN_BSR32 0xe0000000 | |
4402 | /* It is for ck5xx/ck6xx. */ | |
4403 | #define CSKY_INSN_BSR16 0xf800 | |
4404 | #define within_range(x, L) (-(1 << (L - 1)) < (x) && (x) < (1 << (L -1)) - 2) | |
4405 | switch (howto->type) | |
4406 | { | |
4407 | case R_CKCORE_PCREL_IMM18BY2: | |
4408 | /* When h is NULL, means the instruction written as | |
4409 | grs rx, imm32 | |
4410 | if the highest bit is set, prevent the high 32bits | |
4411 | turn to 0xffffffff when signed extern in 64bit | |
4412 | host machine. */ | |
4413 | if (h == NULL && (addend & 0x80000000)) | |
4414 | addend &= 0xffffffff; | |
4415 | break; | |
fe75f42e LX |
4416 | |
4417 | case R_CKCORE_PCREL32: | |
4418 | break; | |
4419 | ||
b8891f8d AJ |
4420 | case R_CKCORE_GOT12: |
4421 | case R_CKCORE_PLT12: | |
4422 | case R_CKCORE_GOT_HI16: | |
4423 | case R_CKCORE_GOT_LO16: | |
4424 | case R_CKCORE_PLT_HI16: | |
4425 | case R_CKCORE_PLT_LO16: | |
4426 | case R_CKCORE_GOT32: | |
4427 | case R_CKCORE_GOT_IMM18BY4: | |
4428 | /* Relocation is to the entry for this symbol in the global | |
4429 | offset table. */ | |
4430 | BFD_ASSERT (htab->elf.sgot != NULL); | |
4431 | if (h != NULL) | |
4432 | { | |
4433 | /* Global symbol is defined by other modules. */ | |
0a1b45a2 | 4434 | bool dyn; |
b8891f8d AJ |
4435 | off = h->got.offset; |
4436 | dyn = htab->elf.dynamic_sections_created; | |
4437 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, | |
4438 | bfd_link_pic (info), h) | |
4439 | || (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info,h)) | |
4440 | || (ELF_ST_VISIBILITY(h->other) | |
4441 | && h->root.type == bfd_link_hash_undefweak)) | |
4442 | { | |
4443 | /* This is actually a static link, or it is a | |
4444 | -Bsymbolic link and the symbol is defined | |
4445 | locally, or the symbol was forced to be local | |
4446 | because of a version file. We must initialize | |
4447 | this entry in the global offset table. Since the | |
4448 | offset must always be a multiple of 4, we use the | |
4449 | least significant bit to record whether we have | |
4450 | initialized it already. | |
4451 | When doing a dynamic link, we create a .rela.dyn | |
4452 | relocation entry to initialize the value. This | |
4453 | is done in the finish_dynamic_symbol routine. FIXME */ | |
4454 | if (off & 1) | |
4455 | off &= ~1; | |
4456 | else | |
4457 | { | |
4458 | bfd_put_32 (output_bfd, relocation, | |
4459 | htab->elf.sgot->contents + off); | |
4460 | h->got.offset |= 1; | |
4461 | ||
4462 | /* TRUE if relative relocation should be generated. GOT reference to | |
4463 | global symbol in PIC will lead to dynamic symbol. It becomes a | |
4464 | problem when "time" or "times" is defined as a variable in an | |
4465 | executable, clashing with functions of the same name in libc. If a | |
4466 | symbol isn't undefined weak symbol, don't make it dynamic in PIC and | |
4467 | generate relative relocation. */ | |
4468 | #define GENERATE_RELATIVE_RELOC_P(INFO, H) \ | |
4469 | ((H)->dynindx == -1 \ | |
4470 | && !(H)->forced_local \ | |
4471 | && (H)->root.type != bfd_link_hash_undefweak \ | |
4472 | && bfd_link_pic (INFO)) | |
4473 | ||
4474 | if (GENERATE_RELATIVE_RELOC_P (info, h)) | |
4475 | /* If this symbol isn't dynamic | |
4476 | in PIC, generate R_CKCORE_RELATIVE here. */ | |
0a1b45a2 | 4477 | relative_reloc = true; |
b8891f8d AJ |
4478 | } |
4479 | } | |
4480 | else | |
0a1b45a2 | 4481 | unresolved_reloc = false; |
b8891f8d AJ |
4482 | } /* End if h != NULL. */ |
4483 | else | |
4484 | { | |
4485 | BFD_ASSERT (local_got_offsets != NULL); | |
4486 | off = local_got_offsets[r_symndx]; | |
4487 | ||
4488 | /* The offset must always be a multiple of 4. We use | |
4489 | the least significant bit to record whether we have | |
4490 | already generated the necessary reloc. */ | |
4491 | if (off & 1) | |
4492 | off &= ~1; | |
4493 | else | |
4494 | { | |
4495 | bfd_put_32 (output_bfd, relocation, | |
4496 | htab->elf.sgot->contents + off); | |
4497 | local_got_offsets[r_symndx] |= 1; | |
4498 | if (bfd_link_pic (info)) | |
0a1b45a2 | 4499 | relative_reloc = true; |
b8891f8d AJ |
4500 | } |
4501 | } | |
4502 | if (relative_reloc) | |
4503 | { | |
4504 | asection *srelgot; | |
4505 | Elf_Internal_Rela outrel; | |
4506 | bfd_byte *loc; | |
4507 | ||
4508 | srelgot = htab->elf.srelgot; | |
4509 | BFD_ASSERT (srelgot != NULL); | |
4510 | ||
4511 | outrel.r_offset | |
4512 | = (htab->elf.sgot->output_section->vma | |
4513 | + htab->elf.sgot->output_offset + off); | |
4514 | outrel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE); | |
4515 | outrel.r_addend = relocation; | |
4516 | loc = srelgot->contents; | |
4517 | loc += (srelgot->reloc_count++ * sizeof (Elf32_External_Rela)); | |
4518 | if (loc != NULL) | |
4519 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4520 | } | |
4521 | relocation = htab->elf.sgot->output_offset + off; | |
4522 | break; | |
4523 | ||
4524 | case R_CKCORE_GOTOFF_IMM18: | |
4525 | case R_CKCORE_GOTOFF: | |
4526 | case R_CKCORE_GOTOFF_HI16: | |
4527 | case R_CKCORE_GOTOFF_LO16: | |
4528 | /* Relocation is relative to the start of the global offset | |
4529 | table. */ | |
4530 | /* Note that sgot->output_offset is not involved in this | |
4531 | calculation. We always want the start of .got. If we | |
4532 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
4533 | permitted by the ABI, we might have to change this | |
4534 | calculation. */ | |
4535 | relocation -= htab->elf.sgot->output_section->vma; | |
4536 | break; | |
4537 | ||
4538 | case R_CKCORE_GOTPC: | |
4539 | case R_CKCORE_GOTPC_HI16: | |
4540 | case R_CKCORE_GOTPC_LO16: | |
4541 | /* Use global offset table as symbol value. */ | |
4542 | relocation = htab->elf.sgot->output_section->vma; | |
4543 | addend = -addend; | |
0a1b45a2 | 4544 | unresolved_reloc = false; |
b8891f8d AJ |
4545 | break; |
4546 | ||
4547 | case R_CKCORE_DOFFSET_IMM18: | |
4548 | case R_CKCORE_DOFFSET_IMM18BY2: | |
4549 | case R_CKCORE_DOFFSET_IMM18BY4: | |
4550 | { | |
4551 | asection *sdata = bfd_get_section_by_name (output_bfd, ".data"); | |
4552 | relocation -= sdata->output_section->vma; | |
4553 | } | |
4554 | break; | |
4555 | ||
4556 | case R_CKCORE_DOFFSET_LO16: | |
4557 | { | |
4558 | asection *sdata = bfd_get_section_by_name (output_bfd, ".data"); | |
4559 | relocation -= sdata->output_section->vma; | |
4560 | } | |
4561 | break; | |
4562 | ||
4563 | case R_CKCORE_TOFFSET_LO16: | |
4564 | { | |
4565 | asection *stext = bfd_get_section_by_name (output_bfd, ".text"); | |
4566 | if (stext) | |
4567 | relocation -= stext->output_section->vma; | |
4568 | } | |
4569 | break; | |
4570 | ||
4571 | case R_CKCORE_PLT_IMM18BY4: | |
4572 | case R_CKCORE_PLT32: | |
4573 | /* Relocation is to the entry for this symbol in the | |
4574 | procedure linkage table. */ | |
4575 | ||
4576 | /* Resolve a PLT32 reloc against a local symbol directly, | |
4577 | without using the procedure linkage table. */ | |
4578 | if (h == NULL) | |
4579 | break; | |
4580 | ||
4581 | if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) | |
4582 | { | |
4583 | /* We didn't make a PLT entry for this symbol. This | |
4584 | happens when statically linking PIC code, or when | |
4585 | using -Bsymbolic. */ | |
4586 | if (h->got.offset != (bfd_vma) -1) | |
4587 | { | |
0a1b45a2 | 4588 | bool dyn; |
b8891f8d AJ |
4589 | |
4590 | off = h->got.offset; | |
4591 | dyn = htab->elf.dynamic_sections_created; | |
4592 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, | |
4593 | bfd_link_pic (info), h) | |
4594 | || (bfd_link_pic (info) | |
4595 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
4596 | || (ELF_ST_VISIBILITY (h->other) | |
4597 | && h->root.type == bfd_link_hash_undefweak)) | |
4598 | { | |
4599 | /* This is actually a static link, or it is a | |
4600 | -Bsymbolic link and the symbol is defined | |
4601 | locally, or the symbol was forced to be local | |
4602 | because of a version file. We must initialize | |
4603 | this entry in the global offset table. Since the | |
4604 | offset must always be a multiple of 4, we use the | |
4605 | least significant bit to record whether we have | |
4606 | initialized it already. | |
4607 | ||
4608 | When doing a dynamic link, we create a .rela.dyn | |
4609 | relocation entry to initialize the value. This | |
4610 | is done in the finish_dynamic_symbol routine. | |
4611 | FIXME! */ | |
4612 | if (off & 1) | |
4613 | off &= ~1; | |
4614 | else | |
4615 | { | |
4616 | h->got.offset |= 1; | |
4617 | if (GENERATE_RELATIVE_RELOC_P (info, h)) | |
0a1b45a2 | 4618 | relative_reloc = true; |
b8891f8d AJ |
4619 | } |
4620 | } | |
4621 | bfd_put_32 (output_bfd, relocation, | |
4622 | htab->elf.sgot->contents + off); | |
4623 | ||
4624 | if (relative_reloc) | |
4625 | { | |
4626 | asection *srelgot; | |
4627 | Elf_Internal_Rela outrel; | |
4628 | bfd_byte *loc; | |
4629 | ||
4630 | srelgot = htab->elf.srelgot; | |
4631 | BFD_ASSERT (srelgot != NULL); | |
4632 | ||
4633 | outrel.r_offset | |
4634 | = (htab->elf.sgot->output_section->vma | |
4635 | + htab->elf.sgot->output_offset + off); | |
4636 | outrel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE); | |
4637 | outrel.r_addend = relocation; | |
4638 | loc = srelgot->contents; | |
4639 | loc += (srelgot->reloc_count++ | |
4640 | * sizeof (Elf32_External_Rela)); | |
4641 | if (loc != NULL) | |
4642 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4643 | } | |
4644 | relocation = off + htab->elf.sgot->output_offset; | |
4645 | } | |
4646 | break; | |
4647 | } | |
4648 | /* The relocation is the got offset. */ | |
4649 | if (bfd_csky_abi (output_bfd) == CSKY_ABI_V2) | |
4650 | relocation = (h->plt.offset / PLT_ENTRY_SIZE + 2) * 4; | |
4651 | else | |
4652 | relocation = (h->plt.offset / PLT_ENTRY_SIZE_P + 2) * 4; | |
0a1b45a2 | 4653 | unresolved_reloc = false; |
b8891f8d AJ |
4654 | break; |
4655 | ||
4656 | case R_CKCORE_PCREL_IMM26BY2: | |
4657 | case R_CKCORE_PCREL_JSR_IMM26BY2: | |
4658 | case R_CKCORE_PCREL_JSR_IMM11BY2: | |
4659 | case R_CKCORE_PCREL_IMM11BY2: | |
4660 | case R_CKCORE_CALLGRAPH: | |
4661 | /* Emit callgraph information first. */ | |
4662 | /* TODO: deal with callgraph. */ | |
4663 | if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_CALLGRAPH) | |
4664 | break; | |
4665 | /* Some reloc need further handling. */ | |
4666 | /* h == NULL means the symbol is a local symbol, | |
4667 | r_symndx == 0 means the symbol is 'ABS' and | |
4668 | the relocation is already handled in assemble, | |
4669 | here just use for callgraph. */ | |
4670 | /* TODO: deal with callgraph. */ | |
4671 | if (h == NULL && r_symndx == 0) | |
4672 | { | |
0a1b45a2 | 4673 | do_final_relocate = false; |
b8891f8d AJ |
4674 | break; |
4675 | } | |
4676 | ||
4677 | /* Ignore weak references to undefined symbols. */ | |
4678 | if (h != NULL && h->root.type == bfd_link_hash_undefweak) | |
4679 | { | |
0a1b45a2 | 4680 | do_final_relocate = false; |
b8891f8d AJ |
4681 | break; |
4682 | } | |
4683 | ||
4684 | /* Using branch stub. */ | |
0a1b45a2 | 4685 | if (use_branch_stub == true |
b8891f8d AJ |
4686 | && ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_IMM26BY2) |
4687 | { | |
4688 | struct elf32_csky_stub_hash_entry *stub_entry = NULL; | |
4689 | if (sym_must_create_stub (h, info)) | |
4690 | stub_entry = elf32_csky_get_stub_entry (input_section, | |
4691 | input_section, | |
4692 | h, rel, htab); | |
4693 | else if (disp > BSR_MAX_FWD_BRANCH_OFFSET | |
4694 | || disp < BSR_MAX_BWD_BRANCH_OFFSET) | |
4695 | stub_entry = elf32_csky_get_stub_entry (input_section, | |
4696 | input_section, | |
4697 | h, rel, htab); | |
4698 | if (stub_entry != NULL) | |
4699 | relocation | |
4700 | = (stub_entry->stub_offset | |
4701 | + stub_entry->stub_sec->output_offset | |
4702 | + stub_entry->stub_sec->output_section->vma); | |
4703 | break; | |
4704 | } | |
4705 | ||
4706 | else if (h == NULL | |
4707 | || (h->root.type == bfd_link_hash_defined | |
4708 | && h->dynindx == -1) | |
4709 | || ((h->def_regular && !h->def_dynamic) | |
4710 | && (h->root.type != bfd_link_hash_defweak | |
4711 | || ! bfd_link_pic (info)))) | |
4712 | { | |
4713 | if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_JSR_IMM26BY2) | |
4714 | { | |
4715 | if (within_range (disp, 26)) | |
4716 | { | |
4717 | /* In range for BSR32. */ | |
4718 | howto = &csky_elf_howto_table[R_CKCORE_PCREL_IMM26BY2]; | |
4719 | read_content_substitute = CSKY_INSN_BSR32; | |
4720 | } | |
4721 | else if (bfd_csky_arch (output_bfd) == CSKY_ARCH_810) | |
4722 | /* if bsr32 cannot reach, generate | |
4723 | "lrw r25, label; jsr r25" instead of | |
4724 | jsri label. */ | |
4725 | howto = &csky_elf_howto_table[R_CKCORE_NOJSRI]; | |
4726 | } /* if ELF32_R_TYPE (rel->r_info)... */ | |
4727 | else if (ELF32_R_TYPE (rel->r_info) | |
4728 | == R_CKCORE_PCREL_JSR_IMM11BY2) | |
4729 | { | |
4730 | if (within_range (disp, 11)) | |
4731 | { | |
4732 | /* In range for BSR16. */ | |
4733 | howto = &csky_elf_howto_table[R_CKCORE_PCREL_IMM11BY2]; | |
4734 | read_content_substitute = CSKY_INSN_BSR16; | |
4735 | } | |
4736 | } | |
4737 | break; | |
4738 | } /* else if h == NULL... */ | |
4739 | ||
4740 | else if (bfd_csky_arch (output_bfd) == CSKY_ARCH_810 | |
4741 | && (ELF32_R_TYPE (rel->r_info) | |
4742 | == R_CKCORE_PCREL_JSR_IMM26BY2)) | |
4743 | { | |
4744 | howto = &csky_elf_howto_table[R_CKCORE_NOJSRI]; | |
4745 | break; | |
4746 | } | |
4747 | /* Other situation, h->def_dynamic == 1, | |
4748 | undefined_symbol when output file is shared object, etc. */ | |
4749 | /* Else fall through. */ | |
4750 | ||
4751 | case R_CKCORE_ADDR_HI16: | |
4752 | case R_CKCORE_ADDR_LO16: | |
4753 | if (bfd_link_pic (info) | |
4754 | || (!bfd_link_pic (info) | |
4755 | && h != NULL | |
4756 | && h->dynindx != -1 | |
4757 | && !h->non_got_ref | |
4758 | && ((h->def_dynamic && !h->def_regular) | |
4759 | || (htab->elf.dynamic_sections_created | |
4760 | && (h->root.type == bfd_link_hash_undefweak | |
4761 | || h->root.type == bfd_link_hash_undefined | |
4762 | || h->root.type == bfd_link_hash_indirect))))) | |
4763 | { | |
4764 | Elf_Internal_Rela outrel; | |
0a1b45a2 | 4765 | bool skip, relocate; |
b8891f8d AJ |
4766 | bfd_byte *loc; |
4767 | ||
4768 | /* When generating a shared object, these relocations | |
4769 | are copied into the output file to be resolved at | |
4770 | run time. */ | |
0a1b45a2 AM |
4771 | skip = false; |
4772 | relocate = false; | |
b8891f8d AJ |
4773 | |
4774 | outrel.r_offset = | |
4775 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4776 | rel->r_offset); | |
4777 | if (outrel.r_offset == (bfd_vma) -1) | |
0a1b45a2 | 4778 | skip = true; |
b8891f8d AJ |
4779 | else if (outrel.r_offset == (bfd_vma) -2) |
4780 | { | |
0a1b45a2 AM |
4781 | skip = true; |
4782 | relocate = true; | |
b8891f8d AJ |
4783 | } |
4784 | outrel.r_offset += (input_section->output_section->vma | |
4785 | + input_section->output_offset); | |
4786 | if (skip) | |
4787 | memset (&outrel, 0, sizeof (outrel)); | |
4788 | else if (h != NULL | |
4789 | && h->dynindx != -1 | |
4790 | && (!bfd_link_pic (info) | |
4791 | || (!SYMBOLIC_BIND (info, h) | |
4792 | && h->root.type == bfd_link_hash_defweak) | |
4793 | || !h->def_regular)) | |
4794 | { | |
4795 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4796 | outrel.r_addend = rel->r_addend; | |
4797 | } | |
4798 | else | |
4799 | { | |
4800 | /* This symbol is local, or marked to become local. */ | |
0a1b45a2 | 4801 | relocate = true; |
b8891f8d AJ |
4802 | outrel.r_info = ELF32_R_INFO (0, r_type); |
4803 | outrel.r_addend = relocation + rel->r_addend; | |
4804 | } | |
4805 | loc = htab->elf.srelgot->contents; | |
4806 | loc += (htab->elf.srelgot->reloc_count++ | |
4807 | * sizeof (Elf32_External_Rela)); | |
4808 | ||
4809 | if (loc != NULL) | |
4810 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4811 | ||
4812 | /* If this reloc is against an external symbol, we do not | |
4813 | want to diddle with the addend. Otherwise, we need to | |
4814 | include the symbol value so that it becomes an addend | |
4815 | for the dynamic reloc. */ | |
4816 | if (!relocate) | |
4817 | continue; | |
4818 | } /* if bfd_link_pic (info) ... */ | |
4819 | break; | |
4820 | ||
4821 | case R_CKCORE_ADDR32: | |
4822 | /* r_symndx will be zero only for relocs against symbols | |
4823 | from removed linkonce sections, or sections discarded | |
4824 | by a linker script. | |
4825 | This relocation don't nedd to handle, the value will | |
4826 | be set to SEC_DISCARDED(0xffffffff). */ | |
4827 | if (r_symndx == 0 | |
4828 | && strcmp (sec->name, ".csky_stack_size") == 0) | |
4829 | { | |
0a1b45a2 | 4830 | do_final_relocate = false; |
b8891f8d AJ |
4831 | break; |
4832 | } | |
4833 | if (r_symndx >= symtab_hdr->sh_info | |
4834 | && h->non_got_ref | |
4835 | && bfd_link_executable (info)) | |
4836 | break; | |
4837 | ||
4838 | if (r_symndx == 0 || (input_section->flags & SEC_ALLOC) == 0) | |
4839 | break; | |
4840 | ||
4841 | if (bfd_link_pic (info) | |
4842 | || (h != NULL | |
4843 | && h->dynindx != -1 | |
4844 | && ((h->def_dynamic && !h->def_regular) | |
4845 | || (htab->elf.dynamic_sections_created | |
4846 | && (h->root.type == bfd_link_hash_undefweak | |
4847 | || h->root.type == bfd_link_hash_undefined | |
4848 | || h->root.type == bfd_link_hash_indirect))))) | |
4849 | { | |
4850 | Elf_Internal_Rela outrel; | |
0a1b45a2 | 4851 | bool skip, relocate; |
b8891f8d AJ |
4852 | bfd_byte *loc; |
4853 | ||
4854 | /* When generating a shared object, these relocations | |
4855 | are copied into the output file to be resolved at | |
4856 | run time. */ | |
0a1b45a2 AM |
4857 | skip = false; |
4858 | relocate = false; | |
b8891f8d AJ |
4859 | |
4860 | outrel.r_offset = | |
4861 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4862 | rel->r_offset); | |
4863 | ||
4864 | if (outrel.r_offset == (bfd_vma) -1) | |
0a1b45a2 | 4865 | skip = true; |
b8891f8d AJ |
4866 | else if (outrel.r_offset == (bfd_vma) -2) |
4867 | { | |
0a1b45a2 AM |
4868 | skip = true; |
4869 | relocate = true; | |
b8891f8d AJ |
4870 | } |
4871 | ||
4872 | outrel.r_offset += (input_section->output_section->vma | |
4873 | + input_section->output_offset); | |
4874 | ||
4875 | if (skip) | |
4876 | memset (&outrel, 0, sizeof (outrel)); | |
4877 | else if (h != NULL | |
4878 | && h->dynindx != -1 | |
4879 | && (!bfd_link_pic (info) | |
4880 | || (!SYMBOLIC_BIND (info, h) | |
4881 | && h->root.type == bfd_link_hash_defweak) | |
4882 | || !h->def_regular)) | |
4883 | { | |
4884 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4885 | outrel.r_addend = rel->r_addend; | |
4886 | } | |
4887 | else | |
4888 | { | |
4889 | /* This symbol is local, or marked to become local. */ | |
4890 | outrel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE); | |
4891 | outrel.r_addend = relocation + rel->r_addend; | |
4892 | } | |
4893 | ||
4894 | loc = htab->elf.srelgot->contents; | |
4895 | loc += (htab->elf.srelgot->reloc_count++ | |
4896 | * sizeof (Elf32_External_Rela)); | |
4897 | ||
4898 | if (loc != NULL) | |
4899 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4900 | ||
4901 | /* If this reloc is against an external symbol, we do | |
4902 | want to diddle with the addend. Otherwise, we need to | |
4903 | include the symbol value so that it becomes an addend | |
4904 | for the dynamic reloc. */ | |
4905 | if (! relocate) | |
4906 | continue; | |
4907 | } | |
4908 | break; | |
4909 | ||
4910 | case R_CKCORE_TLS_LDO32: | |
4911 | relocation = relocation - dtpoff_base (info); | |
4912 | break; | |
4913 | ||
4914 | case R_CKCORE_TLS_LDM32: | |
4915 | BFD_ASSERT (htab->elf.sgot != NULL); | |
4916 | off = htab->tls_ldm_got.offset; | |
4917 | if (off & 1) | |
4918 | off &= ~1; | |
4919 | else | |
4920 | { | |
4921 | /* If we don't know the module number, | |
4922 | create a relocation for it. */ | |
4923 | if (!bfd_link_executable (info)) | |
4924 | { | |
4925 | Elf_Internal_Rela outrel; | |
4926 | bfd_byte *loc; | |
4927 | ||
4928 | BFD_ASSERT (htab->elf.srelgot != NULL); | |
4929 | outrel.r_addend = 0; | |
4930 | outrel.r_offset | |
4931 | = (htab->elf.sgot->output_section->vma | |
4932 | + htab->elf.sgot->output_offset + off); | |
4933 | outrel.r_info = ELF32_R_INFO (0, R_CKCORE_TLS_DTPMOD32); | |
4934 | bfd_put_32 (output_bfd, outrel.r_addend, | |
4935 | htab->elf.sgot->contents + off); | |
4936 | ||
4937 | loc = htab->elf.srelgot->contents; | |
4938 | loc += (htab->elf.srelgot->reloc_count++ | |
4939 | * sizeof (Elf32_External_Rela)); | |
4940 | if (loc) | |
4941 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4942 | } | |
4943 | else | |
4944 | bfd_put_32 (output_bfd, 1, | |
4945 | htab->elf.sgot->contents + off); | |
4946 | htab->tls_ldm_got.offset |= 1; | |
4947 | } | |
4948 | relocation | |
4949 | = (htab->elf.sgot->output_section->vma | |
4950 | + htab->elf.sgot->output_offset + off | |
4951 | - (input_section->output_section->vma | |
4952 | + input_section->output_offset + rel->r_offset)); | |
4953 | break; | |
4954 | case R_CKCORE_TLS_LE32: | |
4955 | if (bfd_link_dll (info)) | |
4956 | { | |
4957 | _bfd_error_handler | |
4958 | /* xgettext:c-format */ | |
4959 | (_("%pB(%pA+%#" PRIx64 "): %s relocation not permitted " | |
4960 | "in shared object"), | |
4961 | input_bfd, input_section, (uint64_t)rel->r_offset, | |
4962 | howto->name); | |
0a1b45a2 | 4963 | return false; |
b8891f8d AJ |
4964 | } |
4965 | else | |
4966 | relocation = tpoff (info, relocation); | |
4967 | break; | |
4968 | case R_CKCORE_TLS_GD32: | |
4969 | case R_CKCORE_TLS_IE32: | |
4970 | { | |
4971 | int indx; | |
4972 | char tls_type; | |
4973 | ||
4974 | BFD_ASSERT (htab->elf.sgot != NULL); | |
4975 | ||
4976 | indx = 0; | |
4977 | if (h != NULL) | |
4978 | { | |
0a1b45a2 | 4979 | bool dyn; |
b8891f8d AJ |
4980 | dyn = htab->elf.dynamic_sections_created; |
4981 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, | |
4982 | bfd_link_pic (info), h) | |
4983 | && (!bfd_link_pic (info) | |
4984 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
4985 | { | |
0a1b45a2 | 4986 | unresolved_reloc = false; |
b8891f8d AJ |
4987 | indx = h->dynindx; |
4988 | } | |
4989 | off = h->got.offset; | |
4990 | tls_type = ((struct csky_elf_link_hash_entry *)h)->tls_type; | |
4991 | } | |
4992 | else | |
4993 | { | |
4994 | BFD_ASSERT (local_got_offsets != NULL); | |
4995 | off = local_got_offsets[r_symndx]; | |
4996 | tls_type = csky_elf_local_got_tls_type (input_bfd)[r_symndx]; | |
4997 | } | |
4998 | ||
4999 | BFD_ASSERT (tls_type != GOT_UNKNOWN); | |
5000 | ||
5001 | if (off & 1) | |
5002 | off &= ~1; | |
5003 | else | |
5004 | { | |
0a1b45a2 | 5005 | bool need_relocs = false; |
b8891f8d AJ |
5006 | Elf_Internal_Rela outrel; |
5007 | bfd_byte *loc = NULL; | |
5008 | int cur_off = off; | |
5009 | /* The GOT entries have not been initialized yet. Do it | |
5010 | now, and emit any relocations. If both an IE GOT and a | |
5011 | GD GOT are necessary, we emit the GD first. */ | |
5012 | if ((!bfd_link_executable (info) || indx != 0) | |
5013 | && (h == NULL | |
5014 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5015 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
5016 | || h->root.type != bfd_link_hash_undefined)) | |
5017 | { | |
0a1b45a2 | 5018 | need_relocs = true; |
b8891f8d AJ |
5019 | BFD_ASSERT (htab->elf.srelgot != NULL); |
5020 | ||
5021 | loc = htab->elf.srelgot->contents; | |
5022 | loc += (htab->elf.srelgot->reloc_count | |
5023 | * sizeof (Elf32_External_Rela)); | |
5024 | } | |
5025 | if (tls_type & GOT_TLS_GD) | |
5026 | { | |
5027 | if (need_relocs) | |
5028 | { | |
5029 | outrel.r_addend = 0; | |
5030 | outrel.r_offset | |
5031 | = (htab->elf.sgot->output_section->vma | |
5032 | + htab->elf.sgot->output_offset | |
5033 | + cur_off); | |
5034 | outrel.r_info | |
5035 | = ELF32_R_INFO (indx, R_CKCORE_TLS_DTPMOD32); | |
5036 | bfd_put_32 (output_bfd, outrel.r_addend, | |
5037 | htab->elf.sgot->contents + cur_off); | |
5038 | if (loc) | |
5039 | bfd_elf32_swap_reloca_out (output_bfd, | |
5040 | &outrel, loc); | |
5041 | loc += sizeof (Elf32_External_Rela); | |
5042 | htab->elf.srelgot->reloc_count++; | |
5043 | if (indx == 0) | |
5044 | bfd_put_32 (output_bfd, | |
5045 | relocation - dtpoff_base (info), | |
5046 | (htab->elf.sgot->contents | |
5047 | + cur_off + 4)); | |
5048 | else | |
5049 | { | |
5050 | outrel.r_addend = 0; | |
5051 | outrel.r_info | |
5052 | = ELF32_R_INFO (indx, R_CKCORE_TLS_DTPOFF32); | |
5053 | outrel.r_offset += 4; | |
5054 | bfd_put_32 (output_bfd, outrel.r_addend, | |
5055 | (htab->elf.sgot->contents | |
5056 | + cur_off + 4)); | |
5057 | outrel.r_info = | |
5058 | ELF32_R_INFO (indx, | |
5059 | R_CKCORE_TLS_DTPOFF32); | |
5060 | if (loc) | |
5061 | bfd_elf32_swap_reloca_out (output_bfd, | |
5062 | &outrel, | |
5063 | loc); | |
5064 | htab->elf.srelgot->reloc_count++; | |
5065 | loc += sizeof (Elf32_External_Rela); | |
5066 | } | |
5067 | ||
5068 | } | |
5069 | else | |
5070 | { | |
5071 | /* If are not emitting relocations for a | |
5072 | general dynamic reference, then we must be in a | |
5073 | static link or an executable link with the | |
5074 | symbol binding locally. Mark it as belonging | |
5075 | to module 1, the executable. */ | |
5076 | bfd_put_32 (output_bfd, 1, | |
5077 | htab->elf.sgot->contents + cur_off); | |
5078 | bfd_put_32 (output_bfd, | |
5079 | relocation - dtpoff_base (info), | |
5080 | htab->elf.sgot->contents | |
5081 | + cur_off + 4); | |
5082 | } | |
5083 | cur_off += 8; | |
5084 | } | |
5085 | if (tls_type & GOT_TLS_IE) | |
5086 | { | |
5087 | if (need_relocs) | |
5088 | { | |
5089 | if (indx == 0) | |
5090 | outrel.r_addend = relocation - dtpoff_base (info); | |
5091 | else | |
5092 | outrel.r_addend = 0; | |
5093 | outrel.r_offset | |
5094 | = (htab->elf.sgot->output_section->vma | |
5095 | + htab->elf.sgot->output_offset + cur_off); | |
5096 | outrel.r_info | |
5097 | = ELF32_R_INFO (indx, R_CKCORE_TLS_TPOFF32); | |
5098 | ||
5099 | bfd_put_32 (output_bfd, outrel.r_addend, | |
5100 | htab->elf.sgot->contents + cur_off); | |
5101 | if (loc) | |
5102 | bfd_elf32_swap_reloca_out (output_bfd, | |
5103 | &outrel, loc); | |
5104 | htab->elf.srelgot->reloc_count++; | |
5105 | loc += sizeof (Elf32_External_Rela); | |
5106 | } | |
5107 | else | |
5108 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
5109 | htab->elf.sgot->contents + cur_off); | |
5110 | } | |
5111 | if (h != NULL) | |
5112 | h->got.offset |= 1; | |
5113 | else | |
5114 | local_got_offsets[r_symndx] |= 1; | |
5115 | } | |
5116 | if ((tls_type & GOT_TLS_GD) && howto->type != R_CKCORE_TLS_GD32) | |
5117 | off += 8; | |
5118 | relocation | |
5119 | = (htab->elf.sgot->output_section->vma | |
5120 | + htab->elf.sgot->output_offset + off | |
5121 | - (input_section->output_section->vma | |
5122 | + input_section->output_offset | |
5123 | + rel->r_offset)); | |
5124 | break; | |
5125 | } | |
5126 | default: | |
5127 | /* No substitution when final linking. */ | |
5128 | read_content_substitute = 0; | |
5129 | break; | |
5130 | } /* End switch (howto->type). */ | |
5131 | ||
5132 | /* Make sure 32-bit data in the text section will not be affected by | |
5133 | our special endianness. | |
5134 | However, this currently affects noting, since the ADDR32 howto type | |
5135 | does no change with the data read. But we may need this mechanism in | |
5136 | the future. */ | |
5137 | ||
57698478 | 5138 | if (bfd_get_reloc_size (howto) == 4 |
b8891f8d | 5139 | && (howto->type == R_CKCORE_ADDR32 |
fe75f42e | 5140 | || howto->type == R_CKCORE_PCREL32 |
b8891f8d AJ |
5141 | || howto->type == R_CKCORE_GOT32 |
5142 | || howto->type == R_CKCORE_GOTOFF | |
5143 | || howto->type == R_CKCORE_GOTPC | |
5144 | || howto->type == R_CKCORE_PLT32 | |
5145 | || howto->type == R_CKCORE_TLS_LE32 | |
5146 | || howto->type == R_CKCORE_TLS_IE32 | |
5147 | || howto->type == R_CKCORE_TLS_LDM32 | |
5148 | || howto->type == R_CKCORE_TLS_GD32 | |
5149 | || howto->type == R_CKCORE_TLS_LDO32 | |
5150 | || howto->type == R_CKCORE_RELATIVE)) | |
5151 | need_reverse_bits = 0; | |
5152 | else | |
5153 | need_reverse_bits = 1; | |
5154 | /* Do the final link. */ | |
5155 | if (howto->type != R_CKCORE_PCREL_JSR_IMM11BY2 | |
5156 | && howto->type != R_CKCORE_PCREL_JSR_IMM26BY2 | |
5157 | && howto->type != R_CKCORE_CALLGRAPH | |
5158 | && do_final_relocate) | |
5159 | r = csky_final_link_relocate (howto, input_bfd, input_section, | |
5160 | contents, rel->r_offset, | |
5161 | relocation, addend); | |
5162 | ||
5163 | if (r != bfd_reloc_ok) | |
5164 | { | |
0a1b45a2 | 5165 | ret = false; |
b8891f8d AJ |
5166 | switch (r) |
5167 | { | |
5168 | default: | |
5169 | break; | |
5170 | case bfd_reloc_overflow: | |
5171 | if (h != NULL) | |
5172 | name = NULL; | |
5173 | else | |
5174 | { | |
5175 | name = bfd_elf_string_from_elf_section (input_bfd, | |
5176 | symtab_hdr->sh_link, | |
5177 | sym->st_name); | |
5178 | if (name == NULL) | |
5179 | break; | |
5180 | if (*name == '\0') | |
fd361982 | 5181 | name = bfd_section_name (sec); |
b8891f8d AJ |
5182 | } |
5183 | (*info->callbacks->reloc_overflow) | |
5184 | (info, | |
5185 | (h ? &h->root : NULL), | |
5186 | name, howto->name, (bfd_vma) 0, | |
5187 | input_bfd, input_section, rel->r_offset); | |
5188 | break; | |
5189 | } | |
5190 | } | |
5191 | } /* End for (;rel < relend; rel++). */ | |
5192 | return ret; | |
5193 | } | |
5194 | ||
0a1b45a2 | 5195 | static bool |
b8891f8d AJ |
5196 | csky_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
5197 | { | |
5198 | int offset; | |
5199 | size_t size; | |
5200 | ||
5201 | switch (note->descsz) | |
5202 | { | |
5203 | default: | |
0a1b45a2 | 5204 | return false; |
b8891f8d AJ |
5205 | /* Sizeof (struct elf_prstatus) on C-SKY V1 arch. */ |
5206 | case 148: | |
5207 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
5208 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
5209 | offset = 72; | |
5210 | size = 72; | |
5211 | break; | |
5212 | /* Sizeof (struct elf_prstatus) on C-SKY V1 arch. */ | |
5213 | case 220: | |
5214 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
5215 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
5216 | offset = 72; | |
5217 | size = 34 * 4; | |
5218 | break; | |
5219 | } | |
5220 | /* Make a ".reg/999" section. */ | |
5221 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
5222 | size, note->descpos + offset); | |
5223 | } | |
5224 | ||
0a1b45a2 | 5225 | static bool |
b8891f8d AJ |
5226 | csky_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
5227 | { | |
5228 | switch (note->descsz) | |
5229 | { | |
5230 | default: | |
0a1b45a2 | 5231 | return false; |
b8891f8d AJ |
5232 | |
5233 | /* Sizeof (struct elf_prpsinfo) on linux csky. */ | |
5234 | case 124: | |
5235 | elf_tdata (abfd)->core->program | |
5236 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
5237 | elf_tdata (abfd)->core->command | |
5238 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
5239 | } | |
5240 | ||
5241 | /* Note that for some reason, a spurious space is tacked | |
5242 | onto the end of the args in some (at least one anyway) | |
5243 | implementations, so strip it off if it exists. */ | |
5244 | { | |
5245 | char *command = elf_tdata (abfd)->core->command; | |
5246 | int n = strlen (command); | |
5247 | ||
5248 | if (0 < n && command[n - 1] == ' ') | |
5249 | command[n - 1] = '\0'; | |
5250 | } | |
5251 | ||
0a1b45a2 | 5252 | return true; |
b8891f8d AJ |
5253 | } |
5254 | ||
0861f561 CQ |
5255 | /* Determine whether an object attribute tag takes an integer, a |
5256 | string or both. */ | |
5257 | ||
5258 | static int | |
5259 | elf32_csky_obj_attrs_arg_type (int tag) | |
5260 | { | |
5261 | switch (tag) | |
5262 | { | |
5263 | case Tag_compatibility: | |
5264 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; | |
5265 | case Tag_CSKY_ARCH_NAME: | |
5266 | case Tag_CSKY_CPU_NAME: | |
5267 | case Tag_CSKY_FPU_NUMBER_MODULE: | |
5268 | return ATTR_TYPE_FLAG_STR_VAL; | |
5269 | case Tag_CSKY_ISA_FLAGS: | |
5270 | case Tag_CSKY_ISA_EXT_FLAGS: | |
5271 | case Tag_CSKY_DSP_VERSION: | |
5272 | case Tag_CSKY_VDSP_VERSION: | |
5273 | case Tag_CSKY_FPU_VERSION: | |
5274 | case Tag_CSKY_FPU_ABI: | |
5275 | case Tag_CSKY_FPU_ROUNDING: | |
5276 | case Tag_CSKY_FPU_HARDFP: | |
5277 | case Tag_CSKY_FPU_Exception: | |
5278 | case Tag_CSKY_FPU_DENORMAL: | |
5279 | return ATTR_TYPE_FLAG_INT_VAL; | |
5280 | default: | |
5281 | break; | |
5282 | } | |
5283 | ||
5284 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; | |
5285 | } | |
5286 | ||
5287 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
5288 | ||
0a1b45a2 | 5289 | static bool |
0861f561 CQ |
5290 | elf32_csky_obj_attrs_handle_unknown (bfd *abfd ATTRIBUTE_UNUSED, |
5291 | int tag ATTRIBUTE_UNUSED) | |
5292 | { | |
0a1b45a2 | 5293 | return true; |
0861f561 CQ |
5294 | } |
5295 | ||
b8891f8d AJ |
5296 | /* End of external entry points for sizing and building linker stubs. */ |
5297 | ||
5298 | /* CPU-related basic API. */ | |
5299 | #define TARGET_BIG_SYM csky_elf32_be_vec | |
5300 | #define TARGET_BIG_NAME "elf32-csky-big" | |
5301 | #define TARGET_LITTLE_SYM csky_elf32_le_vec | |
5302 | #define TARGET_LITTLE_NAME "elf32-csky-little" | |
5303 | #define ELF_ARCH bfd_arch_csky | |
5304 | #define ELF_MACHINE_CODE EM_CSKY | |
5305 | #define ELF_MACHINE_ALT1 EM_CSKY_OLD | |
5306 | #define ELF_MAXPAGESIZE 0x1000 | |
5307 | #define elf_info_to_howto csky_elf_info_to_howto | |
5308 | #define elf_info_to_howto_rel NULL | |
5309 | #define elf_backend_special_sections csky_elf_special_sections | |
5310 | #define bfd_elf32_bfd_link_hash_table_create csky_elf_link_hash_table_create | |
5311 | ||
5312 | /* Target related API. */ | |
5313 | #define bfd_elf32_mkobject csky_elf_mkobject | |
5314 | #define bfd_elf32_bfd_merge_private_bfd_data csky_elf_merge_private_bfd_data | |
5315 | #define bfd_elf32_bfd_set_private_flags csky_elf_set_private_flags | |
5316 | #define elf_backend_copy_indirect_symbol csky_elf_copy_indirect_symbol | |
5072b52d AM |
5317 | #define bfd_elf32_bfd_is_target_special_symbol csky_elf_is_target_special_symbol |
5318 | #define elf_backend_maybe_function_sym csky_elf_maybe_function_sym | |
b8891f8d AJ |
5319 | |
5320 | /* GC section related API. */ | |
5321 | #define elf_backend_can_gc_sections 1 | |
5322 | #define elf_backend_gc_mark_hook csky_elf_gc_mark_hook | |
5323 | #define elf_backend_gc_mark_extra_sections elf32_csky_gc_mark_extra_sections | |
5324 | ||
5325 | /* Relocation related API. */ | |
5326 | #define elf_backend_reloc_type_class csky_elf_reloc_type_class | |
5327 | #define bfd_elf32_bfd_reloc_type_lookup csky_elf_reloc_type_lookup | |
5328 | #define bfd_elf32_bfd_reloc_name_lookup csky_elf_reloc_name_lookup | |
5329 | #define elf_backend_ignore_discarded_relocs csky_elf_ignore_discarded_relocs | |
5330 | #define elf_backend_relocate_section csky_elf_relocate_section | |
5331 | #define elf_backend_check_relocs csky_elf_check_relocs | |
5332 | ||
5333 | /* Dynamic relocate related API. */ | |
5334 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections | |
5335 | #define elf_backend_adjust_dynamic_symbol csky_elf_adjust_dynamic_symbol | |
5336 | #define elf_backend_size_dynamic_sections csky_elf_size_dynamic_sections | |
5337 | #define elf_backend_finish_dynamic_symbol csky_elf_finish_dynamic_symbol | |
5338 | #define elf_backend_finish_dynamic_sections csky_elf_finish_dynamic_sections | |
5339 | #define elf_backend_rela_normal 1 | |
5340 | #define elf_backend_can_refcount 1 | |
5341 | #define elf_backend_plt_readonly 1 | |
5342 | #define elf_backend_want_got_sym 1 | |
5343 | #define elf_backend_want_dynrelro 1 | |
5344 | #define elf_backend_got_header_size 12 | |
5345 | #define elf_backend_want_got_plt 1 | |
5346 | ||
5347 | /* C-SKY coredump support. */ | |
5348 | #define elf_backend_grok_prstatus csky_elf_grok_prstatus | |
5349 | #define elf_backend_grok_psinfo csky_elf_grok_psinfo | |
5350 | ||
0861f561 CQ |
5351 | /* Attribute sections. */ |
5352 | #undef elf_backend_obj_attrs_vendor | |
5353 | #define elf_backend_obj_attrs_vendor "csky" | |
5354 | #undef elf_backend_obj_attrs_section | |
5355 | #define elf_backend_obj_attrs_section ".csky.attributes" | |
5356 | #undef elf_backend_obj_attrs_arg_type | |
5357 | #define elf_backend_obj_attrs_arg_type elf32_csky_obj_attrs_arg_type | |
5358 | #undef elf_backend_obj_attrs_section_type | |
5359 | #define elf_backend_obj_attrs_section_type SHT_CSKY_ATTRIBUTES | |
5360 | #define elf_backend_obj_attrs_handle_unknown elf32_csky_obj_attrs_handle_unknown | |
5361 | ||
b8891f8d | 5362 | #include "elf32-target.h" |