Commit | Line | Data |
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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
051d5130 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
264a1fe0 | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ae9a127f | 18 | You should have received a copy of the GNU General Public License |
fc0bffd6 AM |
19 | along with this program; if not, write to the |
20 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
22 | |
23 | /* This file is based on a preliminary PowerPC ELF ABI. The | |
24 | information may not match the final PowerPC ELF ABI. It includes | |
25 | suggestions from the in-progress Embedded PowerPC ABI, and that | |
26 | information may also not match. */ | |
27 | ||
28 | #include "bfd.h" | |
29 | #include "sysdep.h" | |
30 | #include "bfdlink.h" | |
31 | #include "libbfd.h" | |
32 | #include "elf-bfd.h" | |
33 | #include "elf/ppc.h" | |
7619e7c7 | 34 | #include "elf32-ppc.h" |
252b5132 | 35 | |
f0fe0e16 | 36 | /* RELA relocations are used here. */ |
252b5132 | 37 | |
252b5132 | 38 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 40 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 42 | |
70bccea4 AM |
43 | /* Branch prediction bit for branch taken relocs. */ |
44 | #define BRANCH_PREDICT_BIT 0x200000 | |
45 | /* Mask to set RA in memory instructions. */ | |
46 | #define RA_REGISTER_MASK 0x001f0000 | |
47 | /* Value to shift register by to insert RA. */ | |
48 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
49 | |
50 | /* The name of the dynamic interpreter. This is put in the .interp | |
51 | section. */ | |
252b5132 RH |
52 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
53 | ||
54 | /* The size in bytes of an entry in the procedure linkage table. */ | |
55 | #define PLT_ENTRY_SIZE 12 | |
56 | /* The initial size of the plt reserved for the dynamic linker. */ | |
57 | #define PLT_INITIAL_ENTRY_SIZE 72 | |
58 | /* The size of the gap between entries in the PLT. */ | |
59 | #define PLT_SLOT_SIZE 8 | |
60 | /* The number of single-slot PLT entries (the rest use two slots). */ | |
61 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
62 | ||
7619e7c7 AM |
63 | /* Some nop instructions. */ |
64 | #define NOP 0x60000000 | |
65 | #define CROR_151515 0x4def7b82 | |
66 | #define CROR_313131 0x4ffffb82 | |
67 | ||
68 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
69 | #define TP_OFFSET 0x7000 | |
70 | #define DTP_OFFSET 0x8000 | |
7fce784e | 71 | \f |
e47cd125 | 72 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 73 | |
8da6118f | 74 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
75 | /* This reloc does nothing. */ |
76 | HOWTO (R_PPC_NONE, /* type */ | |
77 | 0, /* rightshift */ | |
78 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
79 | 32, /* bitsize */ | |
b34976b6 | 80 | FALSE, /* pc_relative */ |
252b5132 RH |
81 | 0, /* bitpos */ |
82 | complain_overflow_bitfield, /* complain_on_overflow */ | |
83 | bfd_elf_generic_reloc, /* special_function */ | |
84 | "R_PPC_NONE", /* name */ | |
b34976b6 | 85 | FALSE, /* partial_inplace */ |
252b5132 RH |
86 | 0, /* src_mask */ |
87 | 0, /* dst_mask */ | |
b34976b6 | 88 | FALSE), /* pcrel_offset */ |
252b5132 RH |
89 | |
90 | /* A standard 32 bit relocation. */ | |
91 | HOWTO (R_PPC_ADDR32, /* type */ | |
92 | 0, /* rightshift */ | |
93 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
94 | 32, /* bitsize */ | |
b34976b6 | 95 | FALSE, /* pc_relative */ |
252b5132 RH |
96 | 0, /* bitpos */ |
97 | complain_overflow_bitfield, /* complain_on_overflow */ | |
98 | bfd_elf_generic_reloc, /* special_function */ | |
99 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 100 | FALSE, /* partial_inplace */ |
252b5132 RH |
101 | 0, /* src_mask */ |
102 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 103 | FALSE), /* pcrel_offset */ |
252b5132 RH |
104 | |
105 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
106 | FIXME: we don't check that, we just clear them. */ | |
107 | HOWTO (R_PPC_ADDR24, /* type */ | |
108 | 0, /* rightshift */ | |
109 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
110 | 26, /* bitsize */ | |
b34976b6 | 111 | FALSE, /* pc_relative */ |
252b5132 RH |
112 | 0, /* bitpos */ |
113 | complain_overflow_bitfield, /* complain_on_overflow */ | |
114 | bfd_elf_generic_reloc, /* special_function */ | |
115 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 116 | FALSE, /* partial_inplace */ |
252b5132 RH |
117 | 0, /* src_mask */ |
118 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 119 | FALSE), /* pcrel_offset */ |
252b5132 RH |
120 | |
121 | /* A standard 16 bit relocation. */ | |
122 | HOWTO (R_PPC_ADDR16, /* type */ | |
123 | 0, /* rightshift */ | |
124 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
125 | 16, /* bitsize */ | |
b34976b6 | 126 | FALSE, /* pc_relative */ |
252b5132 RH |
127 | 0, /* bitpos */ |
128 | complain_overflow_bitfield, /* complain_on_overflow */ | |
129 | bfd_elf_generic_reloc, /* special_function */ | |
130 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 131 | FALSE, /* partial_inplace */ |
252b5132 RH |
132 | 0, /* src_mask */ |
133 | 0xffff, /* dst_mask */ | |
b34976b6 | 134 | FALSE), /* pcrel_offset */ |
252b5132 RH |
135 | |
136 | /* A 16 bit relocation without overflow. */ | |
137 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
138 | 0, /* rightshift */ | |
139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
140 | 16, /* bitsize */ | |
b34976b6 | 141 | FALSE, /* pc_relative */ |
252b5132 RH |
142 | 0, /* bitpos */ |
143 | complain_overflow_dont,/* complain_on_overflow */ | |
144 | bfd_elf_generic_reloc, /* special_function */ | |
145 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 146 | FALSE, /* partial_inplace */ |
252b5132 RH |
147 | 0, /* src_mask */ |
148 | 0xffff, /* dst_mask */ | |
b34976b6 | 149 | FALSE), /* pcrel_offset */ |
252b5132 RH |
150 | |
151 | /* The high order 16 bits of an address. */ | |
152 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
153 | 16, /* rightshift */ | |
154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
155 | 16, /* bitsize */ | |
b34976b6 | 156 | FALSE, /* pc_relative */ |
252b5132 RH |
157 | 0, /* bitpos */ |
158 | complain_overflow_dont, /* complain_on_overflow */ | |
159 | bfd_elf_generic_reloc, /* special_function */ | |
160 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 161 | FALSE, /* partial_inplace */ |
252b5132 RH |
162 | 0, /* src_mask */ |
163 | 0xffff, /* dst_mask */ | |
b34976b6 | 164 | FALSE), /* pcrel_offset */ |
252b5132 RH |
165 | |
166 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 167 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
168 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
169 | 16, /* rightshift */ | |
170 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
171 | 16, /* bitsize */ | |
b34976b6 | 172 | FALSE, /* pc_relative */ |
252b5132 RH |
173 | 0, /* bitpos */ |
174 | complain_overflow_dont, /* complain_on_overflow */ | |
175 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
176 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 177 | FALSE, /* partial_inplace */ |
252b5132 RH |
178 | 0, /* src_mask */ |
179 | 0xffff, /* dst_mask */ | |
b34976b6 | 180 | FALSE), /* pcrel_offset */ |
252b5132 RH |
181 | |
182 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
183 | FIXME: we don't check that, we just clear them. */ | |
184 | HOWTO (R_PPC_ADDR14, /* type */ | |
185 | 0, /* rightshift */ | |
186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
187 | 16, /* bitsize */ | |
b34976b6 | 188 | FALSE, /* pc_relative */ |
252b5132 RH |
189 | 0, /* bitpos */ |
190 | complain_overflow_bitfield, /* complain_on_overflow */ | |
191 | bfd_elf_generic_reloc, /* special_function */ | |
192 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 193 | FALSE, /* partial_inplace */ |
252b5132 RH |
194 | 0, /* src_mask */ |
195 | 0xfffc, /* dst_mask */ | |
b34976b6 | 196 | FALSE), /* pcrel_offset */ |
252b5132 RH |
197 | |
198 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
199 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 200 | bits must be zero. */ |
252b5132 RH |
201 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
202 | 0, /* rightshift */ | |
203 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
204 | 16, /* bitsize */ | |
b34976b6 | 205 | FALSE, /* pc_relative */ |
252b5132 RH |
206 | 0, /* bitpos */ |
207 | complain_overflow_bitfield, /* complain_on_overflow */ | |
208 | bfd_elf_generic_reloc, /* special_function */ | |
209 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 210 | FALSE, /* partial_inplace */ |
252b5132 RH |
211 | 0, /* src_mask */ |
212 | 0xfffc, /* dst_mask */ | |
b34976b6 | 213 | FALSE), /* pcrel_offset */ |
252b5132 RH |
214 | |
215 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
216 | indicate that the branch is not expected to be taken. The lower | |
217 | two bits must be zero. */ | |
218 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
219 | 0, /* rightshift */ | |
220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
221 | 16, /* bitsize */ | |
b34976b6 | 222 | FALSE, /* pc_relative */ |
252b5132 RH |
223 | 0, /* bitpos */ |
224 | complain_overflow_bitfield, /* complain_on_overflow */ | |
225 | bfd_elf_generic_reloc, /* special_function */ | |
226 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 227 | FALSE, /* partial_inplace */ |
252b5132 RH |
228 | 0, /* src_mask */ |
229 | 0xfffc, /* dst_mask */ | |
b34976b6 | 230 | FALSE), /* pcrel_offset */ |
252b5132 | 231 | |
8da6118f | 232 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
233 | HOWTO (R_PPC_REL24, /* type */ |
234 | 0, /* rightshift */ | |
235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 26, /* bitsize */ | |
b34976b6 | 237 | TRUE, /* pc_relative */ |
252b5132 RH |
238 | 0, /* bitpos */ |
239 | complain_overflow_signed, /* complain_on_overflow */ | |
240 | bfd_elf_generic_reloc, /* special_function */ | |
241 | "R_PPC_REL24", /* name */ | |
b34976b6 | 242 | FALSE, /* partial_inplace */ |
252b5132 RH |
243 | 0, /* src_mask */ |
244 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 245 | TRUE), /* pcrel_offset */ |
252b5132 | 246 | |
8da6118f | 247 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
248 | HOWTO (R_PPC_REL14, /* type */ |
249 | 0, /* rightshift */ | |
250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 16, /* bitsize */ | |
b34976b6 | 252 | TRUE, /* pc_relative */ |
252b5132 RH |
253 | 0, /* bitpos */ |
254 | complain_overflow_signed, /* complain_on_overflow */ | |
255 | bfd_elf_generic_reloc, /* special_function */ | |
256 | "R_PPC_REL14", /* name */ | |
b34976b6 | 257 | FALSE, /* partial_inplace */ |
252b5132 RH |
258 | 0, /* src_mask */ |
259 | 0xfffc, /* dst_mask */ | |
b34976b6 | 260 | TRUE), /* pcrel_offset */ |
252b5132 | 261 | |
8da6118f | 262 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
263 | the branch is expected to be taken. The lower two bits must be |
264 | zero. */ | |
265 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
266 | 0, /* rightshift */ | |
267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 16, /* bitsize */ | |
b34976b6 | 269 | TRUE, /* pc_relative */ |
252b5132 RH |
270 | 0, /* bitpos */ |
271 | complain_overflow_signed, /* complain_on_overflow */ | |
272 | bfd_elf_generic_reloc, /* special_function */ | |
273 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
252b5132 RH |
275 | 0, /* src_mask */ |
276 | 0xfffc, /* dst_mask */ | |
b34976b6 | 277 | TRUE), /* pcrel_offset */ |
252b5132 | 278 | |
8da6118f | 279 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
280 | the branch is not expected to be taken. The lower two bits must |
281 | be zero. */ | |
282 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
283 | 0, /* rightshift */ | |
284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 16, /* bitsize */ | |
b34976b6 | 286 | TRUE, /* pc_relative */ |
252b5132 RH |
287 | 0, /* bitpos */ |
288 | complain_overflow_signed, /* complain_on_overflow */ | |
289 | bfd_elf_generic_reloc, /* special_function */ | |
290 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 291 | FALSE, /* partial_inplace */ |
252b5132 RH |
292 | 0, /* src_mask */ |
293 | 0xfffc, /* dst_mask */ | |
b34976b6 | 294 | TRUE), /* pcrel_offset */ |
252b5132 RH |
295 | |
296 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
297 | symbol. */ | |
298 | HOWTO (R_PPC_GOT16, /* type */ | |
299 | 0, /* rightshift */ | |
300 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
301 | 16, /* bitsize */ | |
b34976b6 | 302 | FALSE, /* pc_relative */ |
252b5132 RH |
303 | 0, /* bitpos */ |
304 | complain_overflow_signed, /* complain_on_overflow */ | |
305 | bfd_elf_generic_reloc, /* special_function */ | |
306 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 307 | FALSE, /* partial_inplace */ |
252b5132 RH |
308 | 0, /* src_mask */ |
309 | 0xffff, /* dst_mask */ | |
b34976b6 | 310 | FALSE), /* pcrel_offset */ |
252b5132 RH |
311 | |
312 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
313 | the symbol. */ | |
314 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
315 | 0, /* rightshift */ | |
316 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
317 | 16, /* bitsize */ | |
b34976b6 | 318 | FALSE, /* pc_relative */ |
252b5132 RH |
319 | 0, /* bitpos */ |
320 | complain_overflow_dont, /* complain_on_overflow */ | |
321 | bfd_elf_generic_reloc, /* special_function */ | |
322 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 323 | FALSE, /* partial_inplace */ |
252b5132 RH |
324 | 0, /* src_mask */ |
325 | 0xffff, /* dst_mask */ | |
b34976b6 | 326 | FALSE), /* pcrel_offset */ |
252b5132 RH |
327 | |
328 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
329 | the symbol. */ | |
330 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
331 | 16, /* rightshift */ | |
332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
333 | 16, /* bitsize */ | |
b34976b6 | 334 | FALSE, /* pc_relative */ |
252b5132 RH |
335 | 0, /* bitpos */ |
336 | complain_overflow_bitfield, /* complain_on_overflow */ | |
337 | bfd_elf_generic_reloc, /* special_function */ | |
338 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 339 | FALSE, /* partial_inplace */ |
252b5132 RH |
340 | 0, /* src_mask */ |
341 | 0xffff, /* dst_mask */ | |
b34976b6 | 342 | FALSE), /* pcrel_offset */ |
252b5132 RH |
343 | |
344 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
345 | the symbol. */ | |
346 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
347 | 16, /* rightshift */ | |
348 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 16, /* bitsize */ | |
b34976b6 | 350 | FALSE, /* pc_relative */ |
252b5132 RH |
351 | 0, /* bitpos */ |
352 | complain_overflow_bitfield, /* complain_on_overflow */ | |
353 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
354 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 355 | FALSE, /* partial_inplace */ |
252b5132 RH |
356 | 0, /* src_mask */ |
357 | 0xffff, /* dst_mask */ | |
b34976b6 | 358 | FALSE), /* pcrel_offset */ |
252b5132 RH |
359 | |
360 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
361 | entry for the symbol. */ | |
362 | HOWTO (R_PPC_PLTREL24, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 26, /* bitsize */ | |
b34976b6 | 366 | TRUE, /* pc_relative */ |
252b5132 RH |
367 | 0, /* bitpos */ |
368 | complain_overflow_signed, /* complain_on_overflow */ | |
369 | bfd_elf_generic_reloc, /* special_function */ | |
370 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 371 | FALSE, /* partial_inplace */ |
252b5132 RH |
372 | 0, /* src_mask */ |
373 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 374 | TRUE), /* pcrel_offset */ |
252b5132 RH |
375 | |
376 | /* This is used only by the dynamic linker. The symbol should exist | |
377 | both in the object being run and in some shared library. The | |
378 | dynamic linker copies the data addressed by the symbol from the | |
379 | shared library into the object, because the object being | |
380 | run has to have the data at some particular address. */ | |
381 | HOWTO (R_PPC_COPY, /* type */ | |
382 | 0, /* rightshift */ | |
383 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
384 | 32, /* bitsize */ | |
b34976b6 | 385 | FALSE, /* pc_relative */ |
252b5132 RH |
386 | 0, /* bitpos */ |
387 | complain_overflow_bitfield, /* complain_on_overflow */ | |
388 | bfd_elf_generic_reloc, /* special_function */ | |
389 | "R_PPC_COPY", /* name */ | |
b34976b6 | 390 | FALSE, /* partial_inplace */ |
252b5132 RH |
391 | 0, /* src_mask */ |
392 | 0, /* dst_mask */ | |
b34976b6 | 393 | FALSE), /* pcrel_offset */ |
252b5132 RH |
394 | |
395 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
396 | entries. */ | |
397 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
398 | 0, /* rightshift */ | |
399 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
400 | 32, /* bitsize */ | |
b34976b6 | 401 | FALSE, /* pc_relative */ |
252b5132 RH |
402 | 0, /* bitpos */ |
403 | complain_overflow_bitfield, /* complain_on_overflow */ | |
404 | bfd_elf_generic_reloc, /* special_function */ | |
405 | "R_PPC_GLOB_DAT", /* name */ | |
b34976b6 | 406 | FALSE, /* partial_inplace */ |
252b5132 RH |
407 | 0, /* src_mask */ |
408 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 409 | FALSE), /* pcrel_offset */ |
252b5132 RH |
410 | |
411 | /* Marks a procedure linkage table entry for a symbol. */ | |
412 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 32, /* bitsize */ | |
b34976b6 | 416 | FALSE, /* pc_relative */ |
252b5132 RH |
417 | 0, /* bitpos */ |
418 | complain_overflow_bitfield, /* complain_on_overflow */ | |
419 | bfd_elf_generic_reloc, /* special_function */ | |
420 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 421 | FALSE, /* partial_inplace */ |
252b5132 RH |
422 | 0, /* src_mask */ |
423 | 0, /* dst_mask */ | |
b34976b6 | 424 | FALSE), /* pcrel_offset */ |
252b5132 RH |
425 | |
426 | /* Used only by the dynamic linker. When the object is run, this | |
427 | longword is set to the load address of the object, plus the | |
428 | addend. */ | |
429 | HOWTO (R_PPC_RELATIVE, /* type */ | |
430 | 0, /* rightshift */ | |
431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
432 | 32, /* bitsize */ | |
b34976b6 | 433 | FALSE, /* pc_relative */ |
252b5132 RH |
434 | 0, /* bitpos */ |
435 | complain_overflow_bitfield, /* complain_on_overflow */ | |
436 | bfd_elf_generic_reloc, /* special_function */ | |
437 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 438 | FALSE, /* partial_inplace */ |
252b5132 RH |
439 | 0, /* src_mask */ |
440 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 441 | FALSE), /* pcrel_offset */ |
252b5132 RH |
442 | |
443 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
444 | object rather than the final value. Normally used for | |
445 | _GLOBAL_OFFSET_TABLE_. */ | |
446 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
447 | 0, /* rightshift */ | |
448 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
449 | 26, /* bitsize */ | |
b34976b6 | 450 | TRUE, /* pc_relative */ |
252b5132 RH |
451 | 0, /* bitpos */ |
452 | complain_overflow_signed, /* complain_on_overflow */ | |
453 | bfd_elf_generic_reloc, /* special_function */ | |
454 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 455 | FALSE, /* partial_inplace */ |
252b5132 RH |
456 | 0, /* src_mask */ |
457 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 458 | TRUE), /* pcrel_offset */ |
252b5132 RH |
459 | |
460 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
461 | HOWTO (R_PPC_UADDR32, /* type */ | |
462 | 0, /* rightshift */ | |
463 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
464 | 32, /* bitsize */ | |
b34976b6 | 465 | FALSE, /* pc_relative */ |
252b5132 RH |
466 | 0, /* bitpos */ |
467 | complain_overflow_bitfield, /* complain_on_overflow */ | |
468 | bfd_elf_generic_reloc, /* special_function */ | |
469 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 470 | FALSE, /* partial_inplace */ |
252b5132 RH |
471 | 0, /* src_mask */ |
472 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 473 | FALSE), /* pcrel_offset */ |
252b5132 RH |
474 | |
475 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
476 | HOWTO (R_PPC_UADDR16, /* type */ | |
477 | 0, /* rightshift */ | |
478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
479 | 16, /* bitsize */ | |
b34976b6 | 480 | FALSE, /* pc_relative */ |
252b5132 RH |
481 | 0, /* bitpos */ |
482 | complain_overflow_bitfield, /* complain_on_overflow */ | |
483 | bfd_elf_generic_reloc, /* special_function */ | |
484 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 485 | FALSE, /* partial_inplace */ |
252b5132 RH |
486 | 0, /* src_mask */ |
487 | 0xffff, /* dst_mask */ | |
b34976b6 | 488 | FALSE), /* pcrel_offset */ |
252b5132 RH |
489 | |
490 | /* 32-bit PC relative */ | |
491 | HOWTO (R_PPC_REL32, /* type */ | |
492 | 0, /* rightshift */ | |
493 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
494 | 32, /* bitsize */ | |
b34976b6 | 495 | TRUE, /* pc_relative */ |
252b5132 RH |
496 | 0, /* bitpos */ |
497 | complain_overflow_bitfield, /* complain_on_overflow */ | |
498 | bfd_elf_generic_reloc, /* special_function */ | |
499 | "R_PPC_REL32", /* name */ | |
b34976b6 | 500 | FALSE, /* partial_inplace */ |
252b5132 RH |
501 | 0, /* src_mask */ |
502 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 503 | TRUE), /* pcrel_offset */ |
252b5132 RH |
504 | |
505 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 506 | FIXME: not supported. */ |
252b5132 RH |
507 | HOWTO (R_PPC_PLT32, /* type */ |
508 | 0, /* rightshift */ | |
509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
510 | 32, /* bitsize */ | |
b34976b6 | 511 | FALSE, /* pc_relative */ |
252b5132 RH |
512 | 0, /* bitpos */ |
513 | complain_overflow_bitfield, /* complain_on_overflow */ | |
514 | bfd_elf_generic_reloc, /* special_function */ | |
515 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 516 | FALSE, /* partial_inplace */ |
252b5132 RH |
517 | 0, /* src_mask */ |
518 | 0, /* dst_mask */ | |
b34976b6 | 519 | FALSE), /* pcrel_offset */ |
252b5132 RH |
520 | |
521 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 522 | FIXME: not supported. */ |
252b5132 RH |
523 | HOWTO (R_PPC_PLTREL32, /* type */ |
524 | 0, /* rightshift */ | |
525 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
526 | 32, /* bitsize */ | |
b34976b6 | 527 | TRUE, /* pc_relative */ |
252b5132 RH |
528 | 0, /* bitpos */ |
529 | complain_overflow_bitfield, /* complain_on_overflow */ | |
530 | bfd_elf_generic_reloc, /* special_function */ | |
531 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 532 | FALSE, /* partial_inplace */ |
252b5132 RH |
533 | 0, /* src_mask */ |
534 | 0, /* dst_mask */ | |
b34976b6 | 535 | TRUE), /* pcrel_offset */ |
252b5132 RH |
536 | |
537 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
538 | the symbol. */ | |
539 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
540 | 0, /* rightshift */ | |
541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 16, /* bitsize */ | |
b34976b6 | 543 | FALSE, /* pc_relative */ |
252b5132 RH |
544 | 0, /* bitpos */ |
545 | complain_overflow_dont, /* complain_on_overflow */ | |
546 | bfd_elf_generic_reloc, /* special_function */ | |
547 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 548 | FALSE, /* partial_inplace */ |
252b5132 RH |
549 | 0, /* src_mask */ |
550 | 0xffff, /* dst_mask */ | |
b34976b6 | 551 | FALSE), /* pcrel_offset */ |
252b5132 RH |
552 | |
553 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
554 | the symbol. */ | |
555 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
556 | 16, /* rightshift */ | |
557 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
558 | 16, /* bitsize */ | |
b34976b6 | 559 | FALSE, /* pc_relative */ |
252b5132 RH |
560 | 0, /* bitpos */ |
561 | complain_overflow_bitfield, /* complain_on_overflow */ | |
562 | bfd_elf_generic_reloc, /* special_function */ | |
563 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 564 | FALSE, /* partial_inplace */ |
252b5132 RH |
565 | 0, /* src_mask */ |
566 | 0xffff, /* dst_mask */ | |
b34976b6 | 567 | FALSE), /* pcrel_offset */ |
252b5132 RH |
568 | |
569 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
570 | the symbol. */ | |
571 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
572 | 16, /* rightshift */ | |
573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
574 | 16, /* bitsize */ | |
b34976b6 | 575 | FALSE, /* pc_relative */ |
252b5132 RH |
576 | 0, /* bitpos */ |
577 | complain_overflow_bitfield, /* complain_on_overflow */ | |
578 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
579 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 580 | FALSE, /* partial_inplace */ |
252b5132 RH |
581 | 0, /* src_mask */ |
582 | 0xffff, /* dst_mask */ | |
b34976b6 | 583 | FALSE), /* pcrel_offset */ |
252b5132 RH |
584 | |
585 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
586 | small data items. */ | |
587 | HOWTO (R_PPC_SDAREL16, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 16, /* bitsize */ | |
b34976b6 | 591 | FALSE, /* pc_relative */ |
252b5132 RH |
592 | 0, /* bitpos */ |
593 | complain_overflow_signed, /* complain_on_overflow */ | |
594 | bfd_elf_generic_reloc, /* special_function */ | |
595 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 596 | FALSE, /* partial_inplace */ |
252b5132 RH |
597 | 0, /* src_mask */ |
598 | 0xffff, /* dst_mask */ | |
b34976b6 | 599 | FALSE), /* pcrel_offset */ |
252b5132 | 600 | |
c061c2d8 | 601 | /* 16-bit section relative relocation. */ |
252b5132 RH |
602 | HOWTO (R_PPC_SECTOFF, /* type */ |
603 | 0, /* rightshift */ | |
c061c2d8 AM |
604 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
605 | 16, /* bitsize */ | |
b34976b6 | 606 | FALSE, /* pc_relative */ |
252b5132 RH |
607 | 0, /* bitpos */ |
608 | complain_overflow_bitfield, /* complain_on_overflow */ | |
609 | bfd_elf_generic_reloc, /* special_function */ | |
610 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 611 | FALSE, /* partial_inplace */ |
252b5132 | 612 | 0, /* src_mask */ |
c061c2d8 | 613 | 0xffff, /* dst_mask */ |
b34976b6 | 614 | FALSE), /* pcrel_offset */ |
252b5132 | 615 | |
c3668558 | 616 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
617 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
618 | 0, /* rightshift */ | |
619 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
620 | 16, /* bitsize */ | |
b34976b6 | 621 | FALSE, /* pc_relative */ |
252b5132 RH |
622 | 0, /* bitpos */ |
623 | complain_overflow_dont, /* complain_on_overflow */ | |
624 | bfd_elf_generic_reloc, /* special_function */ | |
625 | "R_PPC_SECTOFF_LO", /* name */ | |
b34976b6 | 626 | FALSE, /* partial_inplace */ |
252b5132 RH |
627 | 0, /* src_mask */ |
628 | 0xffff, /* dst_mask */ | |
b34976b6 | 629 | FALSE), /* pcrel_offset */ |
252b5132 | 630 | |
c3668558 | 631 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
632 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
633 | 16, /* rightshift */ | |
634 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
635 | 16, /* bitsize */ | |
b34976b6 | 636 | FALSE, /* pc_relative */ |
252b5132 RH |
637 | 0, /* bitpos */ |
638 | complain_overflow_bitfield, /* complain_on_overflow */ | |
639 | bfd_elf_generic_reloc, /* special_function */ | |
640 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 641 | FALSE, /* partial_inplace */ |
252b5132 RH |
642 | 0, /* src_mask */ |
643 | 0xffff, /* dst_mask */ | |
b34976b6 | 644 | FALSE), /* pcrel_offset */ |
252b5132 | 645 | |
c3668558 | 646 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
647 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
648 | 16, /* rightshift */ | |
649 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
650 | 16, /* bitsize */ | |
b34976b6 | 651 | FALSE, /* pc_relative */ |
252b5132 RH |
652 | 0, /* bitpos */ |
653 | complain_overflow_bitfield, /* complain_on_overflow */ | |
654 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
655 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 656 | FALSE, /* partial_inplace */ |
252b5132 RH |
657 | 0, /* src_mask */ |
658 | 0xffff, /* dst_mask */ | |
b34976b6 | 659 | FALSE), /* pcrel_offset */ |
252b5132 | 660 | |
7619e7c7 AM |
661 | /* Marker reloc for TLS. */ |
662 | HOWTO (R_PPC_TLS, | |
252b5132 RH |
663 | 0, /* rightshift */ |
664 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
665 | 32, /* bitsize */ | |
b34976b6 | 666 | FALSE, /* pc_relative */ |
252b5132 | 667 | 0, /* bitpos */ |
7619e7c7 | 668 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 669 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
670 | "R_PPC_TLS", /* name */ |
671 | FALSE, /* partial_inplace */ | |
672 | 0, /* src_mask */ | |
673 | 0, /* dst_mask */ | |
674 | FALSE), /* pcrel_offset */ | |
675 | ||
676 | /* Computes the load module index of the load module that contains the | |
677 | definition of its TLS sym. */ | |
678 | HOWTO (R_PPC_DTPMOD32, | |
679 | 0, /* rightshift */ | |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 32, /* bitsize */ | |
682 | FALSE, /* pc_relative */ | |
683 | 0, /* bitpos */ | |
684 | complain_overflow_dont, /* complain_on_overflow */ | |
685 | ppc_elf_unhandled_reloc, /* special_function */ | |
686 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 687 | FALSE, /* partial_inplace */ |
252b5132 RH |
688 | 0, /* src_mask */ |
689 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 690 | FALSE), /* pcrel_offset */ |
252b5132 | 691 | |
7619e7c7 AM |
692 | /* Computes a dtv-relative displacement, the difference between the value |
693 | of sym+add and the base address of the thread-local storage block that | |
694 | contains the definition of sym, minus 0x8000. */ | |
695 | HOWTO (R_PPC_DTPREL32, | |
696 | 0, /* rightshift */ | |
697 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
698 | 32, /* bitsize */ | |
699 | FALSE, /* pc_relative */ | |
700 | 0, /* bitpos */ | |
701 | complain_overflow_dont, /* complain_on_overflow */ | |
702 | ppc_elf_unhandled_reloc, /* special_function */ | |
703 | "R_PPC_DTPREL32", /* name */ | |
704 | FALSE, /* partial_inplace */ | |
705 | 0, /* src_mask */ | |
706 | 0xffffffff, /* dst_mask */ | |
707 | FALSE), /* pcrel_offset */ | |
708 | ||
709 | /* A 16 bit dtprel reloc. */ | |
710 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
711 | 0, /* rightshift */ |
712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
713 | 16, /* bitsize */ | |
b34976b6 | 714 | FALSE, /* pc_relative */ |
252b5132 | 715 | 0, /* bitpos */ |
7619e7c7 AM |
716 | complain_overflow_signed, /* complain_on_overflow */ |
717 | ppc_elf_unhandled_reloc, /* special_function */ | |
718 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 719 | FALSE, /* partial_inplace */ |
252b5132 RH |
720 | 0, /* src_mask */ |
721 | 0xffff, /* dst_mask */ | |
b34976b6 | 722 | FALSE), /* pcrel_offset */ |
252b5132 | 723 | |
7619e7c7 AM |
724 | /* Like DTPREL16, but no overflow. */ |
725 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
726 | 0, /* rightshift */ |
727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
728 | 16, /* bitsize */ | |
b34976b6 | 729 | FALSE, /* pc_relative */ |
252b5132 | 730 | 0, /* bitpos */ |
7619e7c7 AM |
731 | complain_overflow_dont, /* complain_on_overflow */ |
732 | ppc_elf_unhandled_reloc, /* special_function */ | |
733 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 734 | FALSE, /* partial_inplace */ |
252b5132 RH |
735 | 0, /* src_mask */ |
736 | 0xffff, /* dst_mask */ | |
b34976b6 | 737 | FALSE), /* pcrel_offset */ |
252b5132 | 738 | |
7619e7c7 AM |
739 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
740 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
741 | 16, /* rightshift */ |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
b34976b6 | 744 | FALSE, /* pc_relative */ |
252b5132 RH |
745 | 0, /* bitpos */ |
746 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
747 | ppc_elf_unhandled_reloc, /* special_function */ |
748 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
252b5132 RH |
750 | 0, /* src_mask */ |
751 | 0xffff, /* dst_mask */ | |
b34976b6 | 752 | FALSE), /* pcrel_offset */ |
252b5132 | 753 | |
7619e7c7 AM |
754 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
755 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
756 | 16, /* rightshift */ |
757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 16, /* bitsize */ | |
b34976b6 | 759 | FALSE, /* pc_relative */ |
252b5132 RH |
760 | 0, /* bitpos */ |
761 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
762 | ppc_elf_unhandled_reloc, /* special_function */ |
763 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 764 | FALSE, /* partial_inplace */ |
252b5132 RH |
765 | 0, /* src_mask */ |
766 | 0xffff, /* dst_mask */ | |
b34976b6 | 767 | FALSE), /* pcrel_offset */ |
252b5132 | 768 | |
7619e7c7 AM |
769 | /* Computes a tp-relative displacement, the difference between the value of |
770 | sym+add and the value of the thread pointer (r13). */ | |
771 | HOWTO (R_PPC_TPREL32, | |
772 | 0, /* rightshift */ | |
773 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
774 | 32, /* bitsize */ | |
775 | FALSE, /* pc_relative */ | |
776 | 0, /* bitpos */ | |
777 | complain_overflow_dont, /* complain_on_overflow */ | |
778 | ppc_elf_unhandled_reloc, /* special_function */ | |
779 | "R_PPC_TPREL32", /* name */ | |
780 | FALSE, /* partial_inplace */ | |
781 | 0, /* src_mask */ | |
782 | 0xffffffff, /* dst_mask */ | |
783 | FALSE), /* pcrel_offset */ | |
784 | ||
785 | /* A 16 bit tprel reloc. */ | |
786 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
787 | 0, /* rightshift */ |
788 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
789 | 16, /* bitsize */ | |
b34976b6 | 790 | FALSE, /* pc_relative */ |
252b5132 | 791 | 0, /* bitpos */ |
7619e7c7 AM |
792 | complain_overflow_signed, /* complain_on_overflow */ |
793 | ppc_elf_unhandled_reloc, /* special_function */ | |
794 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 795 | FALSE, /* partial_inplace */ |
252b5132 RH |
796 | 0, /* src_mask */ |
797 | 0xffff, /* dst_mask */ | |
b34976b6 | 798 | FALSE), /* pcrel_offset */ |
252b5132 | 799 | |
7619e7c7 AM |
800 | /* Like TPREL16, but no overflow. */ |
801 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
802 | 0, /* rightshift */ |
803 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
804 | 16, /* bitsize */ | |
b34976b6 | 805 | FALSE, /* pc_relative */ |
252b5132 | 806 | 0, /* bitpos */ |
7619e7c7 AM |
807 | complain_overflow_dont, /* complain_on_overflow */ |
808 | ppc_elf_unhandled_reloc, /* special_function */ | |
809 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 810 | FALSE, /* partial_inplace */ |
252b5132 RH |
811 | 0, /* src_mask */ |
812 | 0xffff, /* dst_mask */ | |
b34976b6 | 813 | FALSE), /* pcrel_offset */ |
252b5132 | 814 | |
7619e7c7 AM |
815 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
816 | HOWTO (R_PPC_TPREL16_HI, | |
817 | 16, /* rightshift */ | |
818 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
819 | 16, /* bitsize */ | |
820 | FALSE, /* pc_relative */ | |
821 | 0, /* bitpos */ | |
822 | complain_overflow_dont, /* complain_on_overflow */ | |
823 | ppc_elf_unhandled_reloc, /* special_function */ | |
824 | "R_PPC_TPREL16_HI", /* name */ | |
825 | FALSE, /* partial_inplace */ | |
826 | 0, /* src_mask */ | |
827 | 0xffff, /* dst_mask */ | |
828 | FALSE), /* pcrel_offset */ | |
829 | ||
830 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
831 | HOWTO (R_PPC_TPREL16_HA, | |
832 | 16, /* rightshift */ | |
833 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
834 | 16, /* bitsize */ | |
835 | FALSE, /* pc_relative */ | |
836 | 0, /* bitpos */ | |
837 | complain_overflow_dont, /* complain_on_overflow */ | |
838 | ppc_elf_unhandled_reloc, /* special_function */ | |
839 | "R_PPC_TPREL16_HA", /* name */ | |
840 | FALSE, /* partial_inplace */ | |
841 | 0, /* src_mask */ | |
842 | 0xffff, /* dst_mask */ | |
843 | FALSE), /* pcrel_offset */ | |
844 | ||
845 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
846 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
847 | to the first entry. */ | |
848 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
849 | 0, /* rightshift */ |
850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
851 | 16, /* bitsize */ | |
b34976b6 | 852 | FALSE, /* pc_relative */ |
252b5132 RH |
853 | 0, /* bitpos */ |
854 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
855 | ppc_elf_unhandled_reloc, /* special_function */ |
856 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 857 | FALSE, /* partial_inplace */ |
252b5132 RH |
858 | 0, /* src_mask */ |
859 | 0xffff, /* dst_mask */ | |
b34976b6 | 860 | FALSE), /* pcrel_offset */ |
252b5132 | 861 | |
7619e7c7 AM |
862 | /* Like GOT_TLSGD16, but no overflow. */ |
863 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 864 | 0, /* rightshift */ |
7619e7c7 | 865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 866 | 16, /* bitsize */ |
b34976b6 | 867 | FALSE, /* pc_relative */ |
252b5132 | 868 | 0, /* bitpos */ |
7619e7c7 AM |
869 | complain_overflow_dont, /* complain_on_overflow */ |
870 | ppc_elf_unhandled_reloc, /* special_function */ | |
871 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 872 | FALSE, /* partial_inplace */ |
252b5132 RH |
873 | 0, /* src_mask */ |
874 | 0xffff, /* dst_mask */ | |
b34976b6 | 875 | FALSE), /* pcrel_offset */ |
252b5132 | 876 | |
7619e7c7 AM |
877 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
878 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
879 | 16, /* rightshift */ | |
880 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
881 | 16, /* bitsize */ | |
882 | FALSE, /* pc_relative */ | |
883 | 0, /* bitpos */ | |
884 | complain_overflow_dont, /* complain_on_overflow */ | |
885 | ppc_elf_unhandled_reloc, /* special_function */ | |
886 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
887 | FALSE, /* partial_inplace */ | |
888 | 0, /* src_mask */ | |
889 | 0xffff, /* dst_mask */ | |
890 | FALSE), /* pcrel_offset */ | |
252b5132 | 891 | |
7619e7c7 AM |
892 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
893 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
894 | 16, /* rightshift */ | |
895 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
896 | 16, /* bitsize */ | |
897 | FALSE, /* pc_relative */ | |
898 | 0, /* bitpos */ | |
899 | complain_overflow_dont, /* complain_on_overflow */ | |
900 | ppc_elf_unhandled_reloc, /* special_function */ | |
901 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
902 | FALSE, /* partial_inplace */ | |
903 | 0, /* src_mask */ | |
904 | 0xffff, /* dst_mask */ | |
905 | FALSE), /* pcrel_offset */ | |
906 | ||
907 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
908 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
909 | first entry. */ | |
910 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
911 | 0, /* rightshift */ |
912 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
913 | 16, /* bitsize */ | |
7619e7c7 | 914 | FALSE, /* pc_relative */ |
252b5132 RH |
915 | 0, /* bitpos */ |
916 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
917 | ppc_elf_unhandled_reloc, /* special_function */ |
918 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 919 | FALSE, /* partial_inplace */ |
252b5132 RH |
920 | 0, /* src_mask */ |
921 | 0xffff, /* dst_mask */ | |
b34976b6 | 922 | FALSE), /* pcrel_offset */ |
252b5132 | 923 | |
7619e7c7 AM |
924 | /* Like GOT_TLSLD16, but no overflow. */ |
925 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 926 | 0, /* rightshift */ |
7619e7c7 AM |
927 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
928 | 16, /* bitsize */ | |
b34976b6 | 929 | FALSE, /* pc_relative */ |
252b5132 RH |
930 | 0, /* bitpos */ |
931 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
932 | ppc_elf_unhandled_reloc, /* special_function */ |
933 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 934 | FALSE, /* partial_inplace */ |
252b5132 | 935 | 0, /* src_mask */ |
7619e7c7 | 936 | 0xffff, /* dst_mask */ |
b34976b6 | 937 | FALSE), /* pcrel_offset */ |
252b5132 | 938 | |
7619e7c7 AM |
939 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
940 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
941 | 16, /* rightshift */ | |
942 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
943 | 16, /* bitsize */ | |
b34976b6 | 944 | FALSE, /* pc_relative */ |
252b5132 RH |
945 | 0, /* bitpos */ |
946 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
947 | ppc_elf_unhandled_reloc, /* special_function */ |
948 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 949 | FALSE, /* partial_inplace */ |
252b5132 | 950 | 0, /* src_mask */ |
7619e7c7 | 951 | 0xffff, /* dst_mask */ |
b34976b6 | 952 | FALSE), /* pcrel_offset */ |
252b5132 | 953 | |
7619e7c7 AM |
954 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
955 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
956 | 16, /* rightshift */ | |
957 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
958 | 16, /* bitsize */ | |
959 | FALSE, /* pc_relative */ | |
960 | 0, /* bitpos */ | |
961 | complain_overflow_dont, /* complain_on_overflow */ | |
962 | ppc_elf_unhandled_reloc, /* special_function */ | |
963 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
964 | FALSE, /* partial_inplace */ | |
965 | 0, /* src_mask */ | |
966 | 0xffff, /* dst_mask */ | |
967 | FALSE), /* pcrel_offset */ | |
968 | ||
969 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
970 | the offset to the entry. */ | |
971 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
972 | 0, /* rightshift */ |
973 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 16, /* bitsize */ | |
b34976b6 | 975 | FALSE, /* pc_relative */ |
252b5132 RH |
976 | 0, /* bitpos */ |
977 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
978 | ppc_elf_unhandled_reloc, /* special_function */ |
979 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 980 | FALSE, /* partial_inplace */ |
252b5132 RH |
981 | 0, /* src_mask */ |
982 | 0xffff, /* dst_mask */ | |
b34976b6 | 983 | FALSE), /* pcrel_offset */ |
252b5132 | 984 | |
7619e7c7 AM |
985 | /* Like GOT_DTPREL16, but no overflow. */ |
986 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
987 | 0, /* rightshift */ | |
988 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
989 | 16, /* bitsize */ | |
990 | FALSE, /* pc_relative */ | |
991 | 0, /* bitpos */ | |
992 | complain_overflow_dont, /* complain_on_overflow */ | |
993 | ppc_elf_unhandled_reloc, /* special_function */ | |
994 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
995 | FALSE, /* partial_inplace */ | |
996 | 0, /* src_mask */ | |
997 | 0xffff, /* dst_mask */ | |
998 | FALSE), /* pcrel_offset */ | |
252b5132 | 999 | |
7619e7c7 AM |
1000 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1001 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1002 | 16, /* rightshift */ | |
1003 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1004 | 16, /* bitsize */ | |
1005 | FALSE, /* pc_relative */ | |
1006 | 0, /* bitpos */ | |
1007 | complain_overflow_dont, /* complain_on_overflow */ | |
1008 | ppc_elf_unhandled_reloc, /* special_function */ | |
1009 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1010 | FALSE, /* partial_inplace */ | |
1011 | 0, /* src_mask */ | |
1012 | 0xffff, /* dst_mask */ | |
1013 | FALSE), /* pcrel_offset */ | |
252b5132 | 1014 | |
7619e7c7 AM |
1015 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1016 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1017 | 16, /* rightshift */ | |
1018 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1019 | 16, /* bitsize */ | |
1020 | FALSE, /* pc_relative */ | |
1021 | 0, /* bitpos */ | |
1022 | complain_overflow_dont, /* complain_on_overflow */ | |
1023 | ppc_elf_unhandled_reloc, /* special_function */ | |
1024 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1025 | FALSE, /* partial_inplace */ | |
1026 | 0, /* src_mask */ | |
1027 | 0xffff, /* dst_mask */ | |
1028 | FALSE), /* pcrel_offset */ | |
c3668558 | 1029 | |
7619e7c7 AM |
1030 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1031 | offset to the entry. */ | |
1032 | HOWTO (R_PPC_GOT_TPREL16, | |
1033 | 0, /* rightshift */ | |
1034 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1035 | 16, /* bitsize */ | |
1036 | FALSE, /* pc_relative */ | |
1037 | 0, /* bitpos */ | |
1038 | complain_overflow_signed, /* complain_on_overflow */ | |
1039 | ppc_elf_unhandled_reloc, /* special_function */ | |
1040 | "R_PPC_GOT_TPREL16", /* name */ | |
1041 | FALSE, /* partial_inplace */ | |
1042 | 0, /* src_mask */ | |
1043 | 0xffff, /* dst_mask */ | |
1044 | FALSE), /* pcrel_offset */ | |
1045 | ||
1046 | /* Like GOT_TPREL16, but no overflow. */ | |
1047 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1048 | 0, /* rightshift */ | |
1049 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1050 | 16, /* bitsize */ | |
1051 | FALSE, /* pc_relative */ | |
1052 | 0, /* bitpos */ | |
1053 | complain_overflow_dont, /* complain_on_overflow */ | |
1054 | ppc_elf_unhandled_reloc, /* special_function */ | |
1055 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1056 | FALSE, /* partial_inplace */ | |
1057 | 0, /* src_mask */ | |
1058 | 0xffff, /* dst_mask */ | |
1059 | FALSE), /* pcrel_offset */ | |
1060 | ||
1061 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1062 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1063 | 16, /* rightshift */ | |
1064 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1065 | 16, /* bitsize */ | |
1066 | FALSE, /* pc_relative */ | |
1067 | 0, /* bitpos */ | |
1068 | complain_overflow_dont, /* complain_on_overflow */ | |
1069 | ppc_elf_unhandled_reloc, /* special_function */ | |
1070 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1071 | FALSE, /* partial_inplace */ | |
1072 | 0, /* src_mask */ | |
1073 | 0xffff, /* dst_mask */ | |
1074 | FALSE), /* pcrel_offset */ | |
1075 | ||
1076 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1077 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1078 | 16, /* rightshift */ | |
1079 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1080 | 16, /* bitsize */ | |
1081 | FALSE, /* pc_relative */ | |
1082 | 0, /* bitpos */ | |
1083 | complain_overflow_dont, /* complain_on_overflow */ | |
1084 | ppc_elf_unhandled_reloc, /* special_function */ | |
1085 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1086 | FALSE, /* partial_inplace */ | |
1087 | 0, /* src_mask */ | |
1088 | 0xffff, /* dst_mask */ | |
1089 | FALSE), /* pcrel_offset */ | |
1090 | ||
1091 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1092 | in the SVR4 ELF ABI. */ | |
1093 | ||
1094 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1095 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1096 | 0, /* rightshift */ | |
1097 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1098 | 32, /* bitsize */ | |
1099 | FALSE, /* pc_relative */ | |
1100 | 0, /* bitpos */ | |
1101 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1102 | bfd_elf_generic_reloc, /* special_function */ | |
1103 | "R_PPC_EMB_NADDR32", /* name */ | |
1104 | FALSE, /* partial_inplace */ | |
1105 | 0, /* src_mask */ | |
1106 | 0xffffffff, /* dst_mask */ | |
1107 | FALSE), /* pcrel_offset */ | |
1108 | ||
1109 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1110 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1111 | 0, /* rightshift */ | |
1112 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1113 | 16, /* bitsize */ | |
1114 | FALSE, /* pc_relative */ | |
1115 | 0, /* bitpos */ | |
1116 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1117 | bfd_elf_generic_reloc, /* special_function */ | |
1118 | "R_PPC_EMB_NADDR16", /* name */ | |
1119 | FALSE, /* partial_inplace */ | |
1120 | 0, /* src_mask */ | |
1121 | 0xffff, /* dst_mask */ | |
1122 | FALSE), /* pcrel_offset */ | |
1123 | ||
1124 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1125 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1126 | 0, /* rightshift */ | |
1127 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1128 | 16, /* bitsize */ | |
1129 | FALSE, /* pc_relative */ | |
1130 | 0, /* bitpos */ | |
1131 | complain_overflow_dont,/* complain_on_overflow */ | |
1132 | bfd_elf_generic_reloc, /* special_function */ | |
1133 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1134 | FALSE, /* partial_inplace */ | |
1135 | 0, /* src_mask */ | |
1136 | 0xffff, /* dst_mask */ | |
1137 | FALSE), /* pcrel_offset */ | |
1138 | ||
1139 | /* The high order 16 bits of the addend minus the symbol. */ | |
1140 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1141 | 16, /* rightshift */ | |
1142 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1143 | 16, /* bitsize */ | |
1144 | FALSE, /* pc_relative */ | |
1145 | 0, /* bitpos */ | |
1146 | complain_overflow_dont, /* complain_on_overflow */ | |
1147 | bfd_elf_generic_reloc, /* special_function */ | |
1148 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1149 | FALSE, /* partial_inplace */ | |
1150 | 0, /* src_mask */ | |
1151 | 0xffff, /* dst_mask */ | |
1152 | FALSE), /* pcrel_offset */ | |
1153 | ||
1154 | /* The high order 16 bits of the result of the addend minus the address, | |
1155 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1156 | is negative. */ | |
1157 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1158 | 16, /* rightshift */ | |
1159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1160 | 16, /* bitsize */ | |
1161 | FALSE, /* pc_relative */ | |
1162 | 0, /* bitpos */ | |
1163 | complain_overflow_dont, /* complain_on_overflow */ | |
25dbc73a AM |
1164 | ppc_elf_addr16_ha_reloc, /* special_function */ |
1165 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1166 | FALSE, /* partial_inplace */ | |
1167 | 0, /* src_mask */ | |
1168 | 0xffff, /* dst_mask */ | |
1169 | FALSE), /* pcrel_offset */ | |
1170 | ||
1171 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1172 | address in the .sdata section, and returning the offset from | |
1173 | _SDA_BASE_ for that relocation. */ | |
1174 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1175 | 0, /* rightshift */ | |
1176 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1177 | 16, /* bitsize */ | |
1178 | FALSE, /* pc_relative */ | |
1179 | 0, /* bitpos */ | |
1180 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1181 | bfd_elf_generic_reloc, /* special_function */ | |
1182 | "R_PPC_EMB_SDAI16", /* name */ | |
1183 | FALSE, /* partial_inplace */ | |
1184 | 0, /* src_mask */ | |
1185 | 0xffff, /* dst_mask */ | |
1186 | FALSE), /* pcrel_offset */ | |
1187 | ||
1188 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1189 | address in the .sdata2 section, and returning the offset from | |
1190 | _SDA2_BASE_ for that relocation. */ | |
1191 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1192 | 0, /* rightshift */ | |
1193 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | FALSE, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1198 | bfd_elf_generic_reloc, /* special_function */ | |
1199 | "R_PPC_EMB_SDA2I16", /* name */ | |
1200 | FALSE, /* partial_inplace */ | |
1201 | 0, /* src_mask */ | |
1202 | 0xffff, /* dst_mask */ | |
1203 | FALSE), /* pcrel_offset */ | |
1204 | ||
1205 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1206 | small data items. */ | |
1207 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1208 | 0, /* rightshift */ | |
1209 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 16, /* bitsize */ | |
1211 | FALSE, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_signed, /* complain_on_overflow */ | |
1214 | bfd_elf_generic_reloc, /* special_function */ | |
1215 | "R_PPC_EMB_SDA2REL", /* name */ | |
1216 | FALSE, /* partial_inplace */ | |
1217 | 0, /* src_mask */ | |
1218 | 0xffff, /* dst_mask */ | |
1219 | FALSE), /* pcrel_offset */ | |
1220 | ||
1221 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1222 | signed offset from the appropriate base, and filling in the register | |
1223 | field with the appropriate register (0, 2, or 13). */ | |
1224 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1225 | 0, /* rightshift */ | |
1226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1227 | 16, /* bitsize */ | |
1228 | FALSE, /* pc_relative */ | |
1229 | 0, /* bitpos */ | |
1230 | complain_overflow_signed, /* complain_on_overflow */ | |
1231 | bfd_elf_generic_reloc, /* special_function */ | |
1232 | "R_PPC_EMB_SDA21", /* name */ | |
1233 | FALSE, /* partial_inplace */ | |
1234 | 0, /* src_mask */ | |
1235 | 0xffff, /* dst_mask */ | |
1236 | FALSE), /* pcrel_offset */ | |
1237 | ||
1238 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1239 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1240 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1241 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1242 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1243 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1244 | ||
1245 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1246 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1247 | register field with the appropriate register (0, 2, or 13). */ | |
1248 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1249 | 0, /* rightshift */ | |
1250 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1251 | 16, /* bitsize */ | |
1252 | TRUE, /* pc_relative */ | |
1253 | 0, /* bitpos */ | |
1254 | complain_overflow_signed, /* complain_on_overflow */ | |
1255 | bfd_elf_generic_reloc, /* special_function */ | |
1256 | "R_PPC_EMB_RELSDA", /* name */ | |
1257 | FALSE, /* partial_inplace */ | |
1258 | 0, /* src_mask */ | |
1259 | 0xffff, /* dst_mask */ | |
1260 | FALSE), /* pcrel_offset */ | |
1261 | ||
1262 | /* GNU extension to record C++ vtable hierarchy. */ | |
1263 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1264 | 0, /* rightshift */ | |
1265 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1266 | 0, /* bitsize */ | |
1267 | FALSE, /* pc_relative */ | |
1268 | 0, /* bitpos */ | |
1269 | complain_overflow_dont, /* complain_on_overflow */ | |
1270 | NULL, /* special_function */ | |
1271 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1272 | FALSE, /* partial_inplace */ | |
1273 | 0, /* src_mask */ | |
1274 | 0, /* dst_mask */ | |
1275 | FALSE), /* pcrel_offset */ | |
1276 | ||
1277 | /* GNU extension to record C++ vtable member usage. */ | |
1278 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1279 | 0, /* rightshift */ | |
1280 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1281 | 0, /* bitsize */ | |
1282 | FALSE, /* pc_relative */ | |
1283 | 0, /* bitpos */ | |
1284 | complain_overflow_dont, /* complain_on_overflow */ | |
1285 | NULL, /* special_function */ | |
1286 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1287 | FALSE, /* partial_inplace */ |
1288 | 0, /* src_mask */ | |
25dbc73a | 1289 | 0, /* dst_mask */ |
7619e7c7 AM |
1290 | FALSE), /* pcrel_offset */ |
1291 | ||
25dbc73a AM |
1292 | /* Phony reloc to handle AIX style TOC entries. */ |
1293 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1294 | 0, /* rightshift */ |
1295 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1296 | 16, /* bitsize */ | |
1297 | FALSE, /* pc_relative */ | |
1298 | 0, /* bitpos */ | |
25dbc73a | 1299 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 | 1300 | bfd_elf_generic_reloc, /* special_function */ |
25dbc73a | 1301 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1302 | FALSE, /* partial_inplace */ |
1303 | 0, /* src_mask */ | |
1304 | 0xffff, /* dst_mask */ | |
1305 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1306 | }; |
1307 | \f | |
1308 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1309 | ||
1310 | static void | |
1311 | ppc_elf_howto_init (void) | |
1312 | { | |
1313 | unsigned int i, type; | |
1314 | ||
1315 | for (i = 0; | |
1316 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1317 | i++) | |
1318 | { | |
1319 | type = ppc_elf_howto_raw[i].type; | |
1320 | if (type >= (sizeof (ppc_elf_howto_table) | |
1321 | / sizeof (ppc_elf_howto_table[0]))) | |
1322 | abort (); | |
1323 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | static reloc_howto_type * | |
1328 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1329 | bfd_reloc_code_real_type code) | |
1330 | { | |
1331 | enum elf_ppc_reloc_type r; | |
1332 | ||
1333 | /* Initialize howto table if not already done. */ | |
1334 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1335 | ppc_elf_howto_init (); | |
1336 | ||
1337 | switch (code) | |
1338 | { | |
1339 | default: | |
1340 | return NULL; | |
1341 | ||
1342 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1343 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1344 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1345 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; | |
1346 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; | |
1347 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1348 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1349 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1350 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1351 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1352 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1353 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1354 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1355 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1356 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; | |
1357 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; | |
1358 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1359 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1360 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1361 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1362 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1363 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1364 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1365 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1366 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1367 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; | |
1368 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1369 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1370 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1371 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; | |
1372 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; | |
1373 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1374 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1375 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1376 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; | |
1377 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
1378 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; | |
1379 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; | |
1380 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; | |
1381 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1382 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1383 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1384 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; | |
1385 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; | |
1386 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1387 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1388 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1389 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1390 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1391 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1392 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1393 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1394 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1395 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1396 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1397 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1398 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1399 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1400 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1401 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1402 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1403 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1404 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1405 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1406 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1407 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1408 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1409 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1410 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1411 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1412 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1413 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1414 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1415 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1416 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1417 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1418 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1419 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1420 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
1421 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; | |
1422 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1423 | } | |
1424 | ||
1425 | return ppc_elf_howto_table[r]; | |
1426 | }; | |
1427 | ||
1428 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1429 | ||
1430 | static void | |
1431 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
1432 | arelent *cache_ptr, | |
1433 | Elf_Internal_Rela *dst) | |
1434 | { | |
1435 | /* Initialize howto table if not already done. */ | |
1436 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1437 | ppc_elf_howto_init (); | |
1438 | ||
1439 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1440 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1441 | } | |
1442 | ||
1443 | /* Handle the R_PPC_ADDR16_HA reloc. */ | |
1444 | ||
1445 | static bfd_reloc_status_type | |
1446 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
1447 | arelent *reloc_entry, | |
1448 | asymbol *symbol, | |
1449 | void *data ATTRIBUTE_UNUSED, | |
1450 | asection *input_section, | |
1451 | bfd *output_bfd, | |
1452 | char **error_message ATTRIBUTE_UNUSED) | |
1453 | { | |
1454 | bfd_vma relocation; | |
1455 | ||
1456 | if (output_bfd != NULL) | |
1457 | { | |
1458 | reloc_entry->address += input_section->output_offset; | |
1459 | return bfd_reloc_ok; | |
1460 | } | |
1461 | ||
1462 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
1463 | return bfd_reloc_outofrange; | |
1464 | ||
1465 | if (bfd_is_com_section (symbol->section)) | |
1466 | relocation = 0; | |
1467 | else | |
1468 | relocation = symbol->value; | |
1469 | ||
1470 | relocation += symbol->section->output_section->vma; | |
1471 | relocation += symbol->section->output_offset; | |
1472 | relocation += reloc_entry->addend; | |
1473 | ||
1474 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1475 | ||
1476 | return bfd_reloc_continue; | |
1477 | } | |
1478 | ||
1479 | static bfd_reloc_status_type | |
1480 | ppc_elf_unhandled_reloc (bfd *abfd, | |
1481 | arelent *reloc_entry, | |
1482 | asymbol *symbol, | |
1483 | void *data, | |
1484 | asection *input_section, | |
1485 | bfd *output_bfd, | |
1486 | char **error_message) | |
1487 | { | |
1488 | /* If this is a relocatable link (output_bfd test tells us), just | |
1489 | call the generic function. Any adjustment will be done at final | |
1490 | link time. */ | |
1491 | if (output_bfd != NULL) | |
1492 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1493 | input_section, output_bfd, error_message); | |
1494 | ||
1495 | if (error_message != NULL) | |
1496 | { | |
1497 | static char buf[60]; | |
1498 | sprintf (buf, _("generic linker can't handle %s"), | |
1499 | reloc_entry->howto->name); | |
1500 | *error_message = buf; | |
1501 | } | |
1502 | return bfd_reloc_dangerous; | |
1503 | } | |
1504 | \f | |
1505 | /* Sections created by the linker. */ | |
1506 | ||
1507 | typedef struct elf_linker_section | |
1508 | { | |
c9a2f333 | 1509 | /* Pointer to the bfd section. */ |
25dbc73a | 1510 | asection *section; |
c9a2f333 AM |
1511 | /* Section name. */ |
1512 | const char *name; | |
1513 | /* Associated bss section name. */ | |
1514 | const char *bss_name; | |
1515 | /* Associated symbol name. */ | |
1516 | const char *sym_name; | |
1517 | /* Value of symbol. */ | |
1518 | bfd_vma sym_val; | |
25dbc73a AM |
1519 | } elf_linker_section_t; |
1520 | ||
1521 | /* Linked list of allocated pointer entries. This hangs off of the | |
1522 | symbol lists, and provides allows us to return different pointers, | |
1523 | based on different addend's. */ | |
1524 | ||
1525 | typedef struct elf_linker_section_pointers | |
1526 | { | |
1527 | /* next allocated pointer for this symbol */ | |
1528 | struct elf_linker_section_pointers *next; | |
1529 | /* offset of pointer from beginning of section */ | |
1530 | bfd_vma offset; | |
1531 | /* addend used */ | |
1532 | bfd_vma addend; | |
1533 | /* which linker section this is */ | |
1534 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1535 | } elf_linker_section_pointers_t; |
1536 | ||
1537 | struct ppc_elf_obj_tdata | |
1538 | { | |
1539 | struct elf_obj_tdata elf; | |
1540 | ||
1541 | /* A mapping from local symbols to offsets into the various linker | |
1542 | sections added. This is index by the symbol index. */ | |
1543 | elf_linker_section_pointers_t **linker_section_pointers; | |
1544 | }; | |
1545 | ||
1546 | #define ppc_elf_tdata(bfd) \ | |
1547 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1548 | |
25dbc73a AM |
1549 | #define elf_local_ptr_offsets(bfd) \ |
1550 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1551 | |
25dbc73a | 1552 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1553 | |
25dbc73a AM |
1554 | static bfd_boolean |
1555 | ppc_elf_mkobject (bfd *abfd) | |
1556 | { | |
1557 | bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata); | |
1558 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1559 | if (abfd->tdata.any == NULL) | |
1560 | return FALSE; | |
1561 | return TRUE; | |
1562 | } | |
7619e7c7 | 1563 | |
25dbc73a AM |
1564 | /* Fix bad default arch selected for a 32 bit input bfd when the |
1565 | default is 64 bit. */ | |
7619e7c7 | 1566 | |
25dbc73a AM |
1567 | static bfd_boolean |
1568 | ppc_elf_object_p (bfd *abfd) | |
1569 | { | |
1570 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
1571 | { | |
1572 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1573 | |
25dbc73a AM |
1574 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1575 | { | |
1576 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1577 | abfd->arch_info = abfd->arch_info->next; | |
1578 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1579 | } | |
1580 | } | |
1581 | return TRUE; | |
1582 | } | |
7619e7c7 | 1583 | |
25dbc73a | 1584 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1585 | |
25dbc73a AM |
1586 | static bfd_boolean |
1587 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1588 | { | |
1589 | BFD_ASSERT (!elf_flags_init (abfd) | |
1590 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1591 | |
25dbc73a AM |
1592 | elf_elfheader (abfd)->e_flags = flags; |
1593 | elf_flags_init (abfd) = TRUE; | |
1594 | return TRUE; | |
1595 | } | |
1596 | ||
25dbc73a | 1597 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1598 | |
b34976b6 | 1599 | static bfd_boolean |
25dbc73a | 1600 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1601 | { |
25dbc73a AM |
1602 | int offset; |
1603 | unsigned int size; | |
252b5132 | 1604 | |
25dbc73a AM |
1605 | switch (note->descsz) |
1606 | { | |
1607 | default: | |
1608 | return FALSE; | |
252b5132 | 1609 | |
25dbc73a AM |
1610 | case 268: /* Linux/PPC. */ |
1611 | /* pr_cursig */ | |
1612 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
deaaf2f3 | 1613 | |
25dbc73a AM |
1614 | /* pr_pid */ |
1615 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
9abc968f | 1616 | |
25dbc73a AM |
1617 | /* pr_reg */ |
1618 | offset = 72; | |
1619 | size = 192; | |
deaaf2f3 | 1620 | |
25dbc73a AM |
1621 | break; |
1622 | } | |
deaaf2f3 | 1623 | |
25dbc73a AM |
1624 | /* Make a ".reg/999" section. */ |
1625 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1626 | size, note->descpos + offset); | |
1627 | } | |
252b5132 | 1628 | |
25dbc73a AM |
1629 | static bfd_boolean |
1630 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1631 | { | |
1632 | switch (note->descsz) | |
deaaf2f3 | 1633 | { |
25dbc73a AM |
1634 | default: |
1635 | return FALSE; | |
deaaf2f3 | 1636 | |
25dbc73a AM |
1637 | case 128: /* Linux/PPC elf_prpsinfo. */ |
1638 | elf_tdata (abfd)->core_program | |
1639 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1640 | elf_tdata (abfd)->core_command | |
1641 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1642 | } | |
9abc968f | 1643 | |
25dbc73a AM |
1644 | /* Note that for some reason, a spurious space is tacked |
1645 | onto the end of the args in some (at least one anyway) | |
1646 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1647 | |
25dbc73a AM |
1648 | { |
1649 | char *command = elf_tdata (abfd)->core_command; | |
1650 | int n = strlen (command); | |
70bccea4 | 1651 | |
25dbc73a AM |
1652 | if (0 < n && command[n - 1] == ' ') |
1653 | command[n - 1] = '\0'; | |
1654 | } | |
deaaf2f3 | 1655 | |
25dbc73a AM |
1656 | return TRUE; |
1657 | } | |
deaaf2f3 | 1658 | |
25dbc73a AM |
1659 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1660 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1661 | |
25dbc73a AM |
1662 | static bfd_vma |
1663 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1664 | const asection *plt ATTRIBUTE_UNUSED, | |
1665 | const arelent *rel) | |
1666 | { | |
1667 | return rel->address; | |
1668 | } | |
deaaf2f3 | 1669 | |
25dbc73a | 1670 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1671 | is called when bfd_section_from_shdr finds a section with an unknown |
1672 | type. */ | |
deaaf2f3 | 1673 | |
25dbc73a | 1674 | static bfd_boolean |
6dc132d9 L |
1675 | ppc_elf_section_from_shdr (bfd *abfd, |
1676 | Elf_Internal_Shdr *hdr, | |
1677 | const char *name, | |
1678 | int shindex) | |
25dbc73a AM |
1679 | { |
1680 | asection *newsect; | |
1681 | flagword flags; | |
d1c6de6f | 1682 | |
6dc132d9 | 1683 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1684 | return FALSE; |
deaaf2f3 | 1685 | |
25dbc73a AM |
1686 | newsect = hdr->bfd_section; |
1687 | flags = bfd_get_section_flags (abfd, newsect); | |
1688 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1689 | flags |= SEC_EXCLUDE; | |
9abc968f | 1690 | |
25dbc73a AM |
1691 | if (hdr->sh_type == SHT_ORDERED) |
1692 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1693 | |
25dbc73a AM |
1694 | bfd_set_section_flags (abfd, newsect, flags); |
1695 | return TRUE; | |
1696 | } | |
1697 | ||
1698 | /* Set up any other section flags and such that may be necessary. */ | |
1699 | ||
1700 | static bfd_boolean | |
1701 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1702 | Elf_Internal_Shdr *shdr, | |
1703 | asection *asect) | |
1704 | { | |
1705 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
1706 | shdr->sh_flags |= SHF_EXCLUDE; | |
1707 | ||
1708 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
1709 | shdr->sh_type = SHT_ORDERED; | |
1710 | ||
1711 | return TRUE; | |
1712 | } | |
1713 | ||
1714 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
1715 | need to bump up the number of section headers. */ | |
1716 | ||
1717 | static int | |
1718 | ppc_elf_additional_program_headers (bfd *abfd) | |
1719 | { | |
1720 | asection *s; | |
1721 | int ret = 0; | |
d1c6de6f | 1722 | |
25dbc73a AM |
1723 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
1724 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1725 | ++ret; | |
d1c6de6f | 1726 | |
25dbc73a AM |
1727 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
1728 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1729 | ++ret; | |
deaaf2f3 | 1730 | |
25dbc73a AM |
1731 | return ret; |
1732 | } | |
deaaf2f3 | 1733 | |
25dbc73a AM |
1734 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
1735 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
1736 | that the linker doesn't crater when trying to make more than | |
1737 | 2 sections. */ | |
e656e369 | 1738 | |
25dbc73a AM |
1739 | static struct bfd_elf_special_section const ppc_elf_special_sections[]= |
1740 | { | |
1741 | { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC }, | |
1742 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1743 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
1744 | { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
1745 | { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC }, | |
1746 | { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 }, | |
1747 | { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC }, | |
1748 | { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC }, | |
1749 | { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
1750 | { NULL, 0, 0, 0, 0 } | |
1751 | }; | |
1752 | \f | |
1753 | /* Very simple linked list structure for recording apuinfo values. */ | |
1754 | typedef struct apuinfo_list | |
1755 | { | |
1756 | struct apuinfo_list *next; | |
1757 | unsigned long value; | |
1758 | } | |
1759 | apuinfo_list; | |
e656e369 | 1760 | |
25dbc73a | 1761 | static apuinfo_list *head; |
deaaf2f3 | 1762 | |
deaaf2f3 | 1763 | |
25dbc73a AM |
1764 | static void |
1765 | apuinfo_list_init (void) | |
1766 | { | |
1767 | head = NULL; | |
1768 | } | |
9abc968f | 1769 | |
25dbc73a AM |
1770 | static void |
1771 | apuinfo_list_add (unsigned long value) | |
1772 | { | |
1773 | apuinfo_list *entry = head; | |
deaaf2f3 | 1774 | |
25dbc73a AM |
1775 | while (entry != NULL) |
1776 | { | |
1777 | if (entry->value == value) | |
1778 | return; | |
1779 | entry = entry->next; | |
1780 | } | |
b4a38de6 | 1781 | |
25dbc73a AM |
1782 | entry = bfd_malloc (sizeof (* entry)); |
1783 | if (entry == NULL) | |
1784 | return; | |
e656e369 | 1785 | |
25dbc73a AM |
1786 | entry->value = value; |
1787 | entry->next = head; | |
1788 | head = entry; | |
1789 | } | |
9abc968f | 1790 | |
25dbc73a AM |
1791 | static unsigned |
1792 | apuinfo_list_length (void) | |
1793 | { | |
1794 | apuinfo_list *entry; | |
1795 | unsigned long count; | |
9abc968f | 1796 | |
25dbc73a AM |
1797 | for (entry = head, count = 0; |
1798 | entry; | |
1799 | entry = entry->next) | |
1800 | ++ count; | |
e656e369 | 1801 | |
25dbc73a AM |
1802 | return count; |
1803 | } | |
eea6121a | 1804 | |
25dbc73a AM |
1805 | static inline unsigned long |
1806 | apuinfo_list_element (unsigned long number) | |
1807 | { | |
1808 | apuinfo_list * entry; | |
e656e369 | 1809 | |
25dbc73a AM |
1810 | for (entry = head; |
1811 | entry && number --; | |
1812 | entry = entry->next) | |
1813 | ; | |
252b5132 | 1814 | |
25dbc73a AM |
1815 | return entry ? entry->value : 0; |
1816 | } | |
1817 | ||
1818 | static void | |
1819 | apuinfo_list_finish (void) | |
1820 | { | |
1821 | apuinfo_list *entry; | |
1822 | ||
1823 | for (entry = head; entry;) | |
252b5132 | 1824 | { |
25dbc73a AM |
1825 | apuinfo_list *next = entry->next; |
1826 | free (entry); | |
1827 | entry = next; | |
1828 | } | |
9abc968f | 1829 | |
25dbc73a AM |
1830 | head = NULL; |
1831 | } | |
9abc968f | 1832 | |
25dbc73a AM |
1833 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
1834 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 1835 | |
25dbc73a AM |
1836 | /* Scan the input BFDs and create a linked list of |
1837 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 1838 | |
25dbc73a AM |
1839 | static void |
1840 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
1841 | { | |
1842 | bfd *ibfd; | |
1843 | asection *asec; | |
1844 | char *buffer; | |
1845 | unsigned num_input_sections; | |
1846 | bfd_size_type output_section_size; | |
1847 | unsigned i; | |
1848 | unsigned num_entries; | |
1849 | unsigned long offset; | |
1850 | unsigned long length; | |
1851 | const char *error_message = NULL; | |
9abc968f | 1852 | |
25dbc73a AM |
1853 | if (link_info == NULL) |
1854 | return; | |
9abc968f | 1855 | |
25dbc73a AM |
1856 | /* Scan the input bfds, looking for apuinfo sections. */ |
1857 | num_input_sections = 0; | |
1858 | output_section_size = 0; | |
252b5132 | 1859 | |
25dbc73a | 1860 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) |
252b5132 | 1861 | { |
25dbc73a AM |
1862 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
1863 | if (asec) | |
252b5132 | 1864 | { |
25dbc73a AM |
1865 | ++ num_input_sections; |
1866 | output_section_size += asec->size; | |
252b5132 | 1867 | } |
252b5132 RH |
1868 | } |
1869 | ||
25dbc73a AM |
1870 | /* We need at least one input sections |
1871 | in order to make merging worthwhile. */ | |
1872 | if (num_input_sections < 1) | |
1873 | return; | |
deaaf2f3 | 1874 | |
25dbc73a AM |
1875 | /* Just make sure that the output section exists as well. */ |
1876 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
1877 | if (asec == NULL) | |
1878 | return; | |
252b5132 | 1879 | |
25dbc73a AM |
1880 | /* Allocate a buffer for the contents of the input sections. */ |
1881 | buffer = bfd_malloc (output_section_size); | |
1882 | if (buffer == NULL) | |
1883 | return; | |
252b5132 | 1884 | |
25dbc73a AM |
1885 | offset = 0; |
1886 | apuinfo_list_init (); | |
252b5132 | 1887 | |
25dbc73a AM |
1888 | /* Read in the input sections contents. */ |
1889 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
252b5132 | 1890 | { |
25dbc73a AM |
1891 | unsigned long datum; |
1892 | char *ptr; | |
252b5132 | 1893 | |
25dbc73a AM |
1894 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
1895 | if (asec == NULL) | |
1896 | continue; | |
252b5132 | 1897 | |
25dbc73a AM |
1898 | length = asec->size; |
1899 | if (length < 24) | |
1900 | { | |
1901 | error_message = _("corrupt or empty %s section in %B"); | |
1902 | goto fail; | |
1903 | } | |
252b5132 | 1904 | |
25dbc73a AM |
1905 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
1906 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
1907 | { | |
1908 | error_message = _("unable to read in %s section from %B"); | |
1909 | goto fail; | |
1910 | } | |
252b5132 | 1911 | |
25dbc73a AM |
1912 | /* Process the contents of the section. */ |
1913 | ptr = buffer + offset; | |
1914 | error_message = _("corrupt %s section in %B"); | |
252b5132 | 1915 | |
25dbc73a AM |
1916 | /* Verify the contents of the header. Note - we have to |
1917 | extract the values this way in order to allow for a | |
1918 | host whose endian-ness is different from the target. */ | |
1919 | datum = bfd_get_32 (ibfd, ptr); | |
1920 | if (datum != sizeof APUINFO_LABEL) | |
1921 | goto fail; | |
252b5132 | 1922 | |
25dbc73a AM |
1923 | datum = bfd_get_32 (ibfd, ptr + 8); |
1924 | if (datum != 0x2) | |
1925 | goto fail; | |
252b5132 | 1926 | |
25dbc73a AM |
1927 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) |
1928 | goto fail; | |
252b5132 | 1929 | |
25dbc73a AM |
1930 | /* Get the number of bytes used for apuinfo entries. */ |
1931 | datum = bfd_get_32 (ibfd, ptr + 4); | |
1932 | if (datum + 20 != length) | |
1933 | goto fail; | |
1934 | ||
1935 | /* Make sure that we do not run off the end of the section. */ | |
1936 | if (offset + length > output_section_size) | |
1937 | goto fail; | |
1938 | ||
1939 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
1940 | for (i = 0; i < datum; i += 4) | |
1941 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
1942 | ||
1943 | /* Update the offset. */ | |
1944 | offset += length; | |
252b5132 RH |
1945 | } |
1946 | ||
25dbc73a | 1947 | error_message = NULL; |
252b5132 | 1948 | |
25dbc73a AM |
1949 | /* Compute the size of the output section. */ |
1950 | num_entries = apuinfo_list_length (); | |
1951 | output_section_size = 20 + num_entries * 4; | |
252b5132 | 1952 | |
25dbc73a AM |
1953 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
1954 | ||
1955 | if (! bfd_set_section_size (abfd, asec, output_section_size)) | |
1956 | ibfd = abfd, | |
1957 | error_message = _("warning: unable to set size of %s section in %B"); | |
1958 | ||
1959 | fail: | |
1960 | free (buffer); | |
1961 | ||
1962 | if (error_message) | |
1963 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
1964 | } | |
252b5132 | 1965 | |
25dbc73a AM |
1966 | /* Prevent the output section from accumulating the input sections' |
1967 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 1968 | |
25dbc73a AM |
1969 | static bfd_boolean |
1970 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
1971 | asection *asec, | |
1972 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
1973 | { | |
1974 | return (apuinfo_list_length () | |
1975 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
252b5132 RH |
1976 | } |
1977 | ||
25dbc73a AM |
1978 | /* Finally we can generate the output section. */ |
1979 | ||
1980 | static void | |
1981 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 1982 | { |
25dbc73a AM |
1983 | bfd_byte *buffer; |
1984 | asection *asec; | |
1985 | unsigned i; | |
1986 | unsigned num_entries; | |
1987 | bfd_size_type length; | |
7619e7c7 | 1988 | |
25dbc73a AM |
1989 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
1990 | if (asec == NULL) | |
1991 | return; | |
1992 | ||
1993 | if (apuinfo_list_length () == 0) | |
1994 | return; | |
1995 | ||
1996 | length = asec->size; | |
1997 | if (length < 20) | |
1998 | return; | |
1999 | ||
2000 | buffer = bfd_malloc (length); | |
2001 | if (buffer == NULL) | |
7619e7c7 | 2002 | { |
25dbc73a AM |
2003 | (*_bfd_error_handler) |
2004 | (_("failed to allocate space for new APUinfo section.")); | |
2005 | return; | |
7619e7c7 | 2006 | } |
7619e7c7 | 2007 | |
25dbc73a AM |
2008 | /* Create the apuinfo header. */ |
2009 | num_entries = apuinfo_list_length (); | |
2010 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2011 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2012 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2013 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2014 | |
25dbc73a AM |
2015 | length = 20; |
2016 | for (i = 0; i < num_entries; i++) | |
feee612b | 2017 | { |
25dbc73a AM |
2018 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2019 | length += 4; | |
feee612b | 2020 | } |
feee612b | 2021 | |
25dbc73a AM |
2022 | if (length != asec->size) |
2023 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2024 | |
25dbc73a AM |
2025 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2026 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2027 | |
25dbc73a AM |
2028 | free (buffer); |
2029 | ||
2030 | apuinfo_list_finish (); | |
252b5132 | 2031 | } |
25dbc73a AM |
2032 | \f |
2033 | /* The following functions are specific to the ELF linker, while | |
2034 | functions above are used generally. They appear in this file more | |
2035 | or less in the order in which they are called. eg. | |
2036 | ppc_elf_check_relocs is called early in the link process, | |
2037 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2038 | called. */ | |
252b5132 | 2039 | |
25dbc73a AM |
2040 | /* The PPC linker needs to keep track of the number of relocs that it |
2041 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2042 | This is so that it can later discard them if they are found to be | |
2043 | unnecessary. We store the information in a field extending the | |
2044 | regular ELF linker hash table. */ | |
ae9a127f | 2045 | |
25dbc73a | 2046 | struct ppc_elf_dyn_relocs |
252b5132 | 2047 | { |
25dbc73a | 2048 | struct ppc_elf_dyn_relocs *next; |
252b5132 | 2049 | |
25dbc73a AM |
2050 | /* The input section of the reloc. */ |
2051 | asection *sec; | |
252b5132 | 2052 | |
25dbc73a AM |
2053 | /* Total number of relocs copied for the input section. */ |
2054 | bfd_size_type count; | |
252b5132 | 2055 | |
25dbc73a AM |
2056 | /* Number of pc-relative relocs copied for the input section. */ |
2057 | bfd_size_type pc_count; | |
2058 | }; | |
252b5132 | 2059 | |
25dbc73a AM |
2060 | /* Of those relocs that might be copied as dynamic relocs, this macro |
2061 | selects those that must be copied when linking a shared library, | |
2062 | even when the symbol is local. */ | |
252b5132 | 2063 | |
25dbc73a AM |
2064 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
2065 | ((RTYPE) != R_PPC_REL24 \ | |
2066 | && (RTYPE) != R_PPC_REL14 \ | |
2067 | && (RTYPE) != R_PPC_REL14_BRTAKEN \ | |
2068 | && (RTYPE) != R_PPC_REL14_BRNTAKEN \ | |
2069 | && (RTYPE) != R_PPC_REL32) | |
252b5132 | 2070 | |
25dbc73a AM |
2071 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2072 | copying dynamic variables from a shared lib into an app's dynbss | |
2073 | section, and instead use a dynamic relocation to point into the | |
2074 | shared lib. */ | |
2075 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2076 | |
25dbc73a | 2077 | /* PPC ELF linker hash entry. */ |
252b5132 | 2078 | |
25dbc73a AM |
2079 | struct ppc_elf_link_hash_entry |
2080 | { | |
2081 | struct elf_link_hash_entry elf; | |
252b5132 | 2082 | |
25dbc73a AM |
2083 | /* If this symbol is used in the linker created sections, the processor |
2084 | specific backend uses this field to map the field into the offset | |
2085 | from the beginning of the section. */ | |
2086 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2087 | |
25dbc73a AM |
2088 | /* Track dynamic relocs copied for this symbol. */ |
2089 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
252b5132 | 2090 | |
25dbc73a AM |
2091 | /* Contexts in which symbol is used in the GOT (or TOC). |
2092 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
2093 | corresponding relocs are encountered during check_relocs. | |
2094 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2095 | indicate the corresponding GOT entry type is not needed. */ | |
2096 | #define TLS_GD 1 /* GD reloc. */ | |
2097 | #define TLS_LD 2 /* LD reloc. */ | |
2098 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2099 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2100 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2101 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
2102 | char tls_mask; | |
2103 | }; | |
252b5132 | 2104 | |
25dbc73a AM |
2105 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2106 | ||
2107 | /* PPC ELF linker hash table. */ | |
2108 | ||
2109 | struct ppc_elf_link_hash_table | |
2110 | { | |
2111 | struct elf_link_hash_table elf; | |
2112 | ||
2113 | /* Short-cuts to get to dynamic linker sections. */ | |
2114 | asection *got; | |
2115 | asection *relgot; | |
2116 | asection *plt; | |
2117 | asection *relplt; | |
2118 | asection *dynbss; | |
2119 | asection *relbss; | |
2120 | asection *dynsbss; | |
2121 | asection *relsbss; | |
c9a2f333 | 2122 | elf_linker_section_t sdata[2]; |
25dbc73a AM |
2123 | asection *sbss; |
2124 | ||
2125 | /* Shortcut to .__tls_get_addr. */ | |
2126 | struct elf_link_hash_entry *tls_get_addr; | |
252b5132 | 2127 | |
25dbc73a AM |
2128 | /* TLS local dynamic got entry handling. */ |
2129 | union { | |
2130 | bfd_signed_vma refcount; | |
2131 | bfd_vma offset; | |
2132 | } tlsld_got; | |
252b5132 | 2133 | |
25dbc73a AM |
2134 | /* Small local sym to section mapping cache. */ |
2135 | struct sym_sec_cache sym_sec; | |
2136 | }; | |
252b5132 | 2137 | |
25dbc73a | 2138 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2139 | |
25dbc73a AM |
2140 | #define ppc_elf_hash_table(p) \ |
2141 | ((struct ppc_elf_link_hash_table *) (p)->hash) | |
252b5132 | 2142 | |
25dbc73a | 2143 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2144 | |
25dbc73a AM |
2145 | static struct bfd_hash_entry * |
2146 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2147 | struct bfd_hash_table *table, | |
2148 | const char *string) | |
252b5132 | 2149 | { |
25dbc73a AM |
2150 | /* Allocate the structure if it has not already been allocated by a |
2151 | subclass. */ | |
2152 | if (entry == NULL) | |
2153 | { | |
2154 | entry = bfd_hash_allocate (table, | |
2155 | sizeof (struct ppc_elf_link_hash_entry)); | |
2156 | if (entry == NULL) | |
2157 | return entry; | |
2158 | } | |
252b5132 | 2159 | |
25dbc73a AM |
2160 | /* Call the allocation method of the superclass. */ |
2161 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2162 | if (entry != NULL) | |
2163 | { | |
2164 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2165 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2166 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
2167 | } | |
252b5132 | 2168 | |
25dbc73a | 2169 | return entry; |
252b5132 | 2170 | } |
3dab13f6 | 2171 | |
25dbc73a | 2172 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2173 | |
25dbc73a AM |
2174 | static struct bfd_link_hash_table * |
2175 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2176 | { |
25dbc73a | 2177 | struct ppc_elf_link_hash_table *ret; |
3dab13f6 | 2178 | |
25dbc73a AM |
2179 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2180 | if (ret == NULL) | |
2181 | return NULL; | |
3dab13f6 | 2182 | |
25dbc73a AM |
2183 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2184 | ppc_elf_link_hash_newfunc)) | |
3dab13f6 | 2185 | { |
25dbc73a AM |
2186 | free (ret); |
2187 | return NULL; | |
2188 | } | |
58111eb7 | 2189 | |
c9a2f333 AM |
2190 | ret->sdata[0].name = ".sdata"; |
2191 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2192 | ret->sdata[0].bss_name = ".sbss"; | |
2193 | ||
2194 | ret->sdata[1].name = ".sdata2"; | |
2195 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2196 | ret->sdata[1].bss_name = ".sbss2"; | |
2197 | ||
25dbc73a AM |
2198 | return &ret->elf.root; |
2199 | } | |
3dab13f6 | 2200 | |
25dbc73a | 2201 | /* The powerpc .got has a blrl instruction in it. Mark it executable. */ |
3dab13f6 | 2202 | |
25dbc73a AM |
2203 | static bfd_boolean |
2204 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2205 | { | |
2206 | struct ppc_elf_link_hash_table *htab; | |
2207 | asection *s; | |
2208 | flagword flags; | |
3dab13f6 | 2209 | |
25dbc73a AM |
2210 | if (!_bfd_elf_create_got_section (abfd, info)) |
2211 | return FALSE; | |
3dab13f6 | 2212 | |
25dbc73a AM |
2213 | htab = ppc_elf_hash_table (info); |
2214 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
2215 | if (s == NULL) | |
2216 | abort (); | |
3dab13f6 | 2217 | |
25dbc73a AM |
2218 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2219 | | SEC_LINKER_CREATED); | |
2220 | if (!bfd_set_section_flags (abfd, s, flags)) | |
2221 | return FALSE; | |
3dab13f6 | 2222 | |
25dbc73a AM |
2223 | htab->relgot = bfd_make_section (abfd, ".rela.got"); |
2224 | if (!htab->relgot | |
2225 | || ! bfd_set_section_flags (abfd, htab->relgot, | |
2226 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
2227 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2228 | | SEC_READONLY)) | |
2229 | || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) | |
2230 | return FALSE; | |
3dab13f6 | 2231 | |
25dbc73a AM |
2232 | return TRUE; |
2233 | } | |
3dab13f6 | 2234 | |
25dbc73a AM |
2235 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2236 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2237 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2238 | |
25dbc73a AM |
2239 | static bfd_boolean |
2240 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2241 | { | |
2242 | struct ppc_elf_link_hash_table *htab; | |
2243 | asection *s; | |
2244 | flagword flags; | |
3dab13f6 | 2245 | |
25dbc73a | 2246 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2247 | |
25dbc73a AM |
2248 | if (htab->got == NULL |
2249 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
2250 | return FALSE; |
2251 | ||
25dbc73a AM |
2252 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2253 | return FALSE; | |
3dab13f6 | 2254 | |
25dbc73a AM |
2255 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2256 | | SEC_LINKER_CREATED); | |
3dab13f6 | 2257 | |
25dbc73a AM |
2258 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
2259 | htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss"); | |
2260 | if (s == NULL | |
2261 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) | |
2262 | return FALSE; | |
3dab13f6 | 2263 | |
25dbc73a AM |
2264 | if (! info->shared) |
2265 | { | |
2266 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
2267 | htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss"); | |
2268 | if (s == NULL | |
2269 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
2270 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
2271 | return FALSE; | |
2272 | } | |
3dab13f6 | 2273 | |
25dbc73a AM |
2274 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2275 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
2276 | if (s == NULL) | |
2277 | abort (); | |
3dab13f6 | 2278 | |
25dbc73a AM |
2279 | flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED; |
2280 | return bfd_set_section_flags (abfd, s, flags); | |
2281 | } | |
3dab13f6 | 2282 | |
25dbc73a | 2283 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2284 | |
25dbc73a AM |
2285 | static void |
2286 | ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed, | |
2287 | struct elf_link_hash_entry *dir, | |
2288 | struct elf_link_hash_entry *ind) | |
2289 | { | |
2290 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2291 | |
25dbc73a AM |
2292 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2293 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2294 | |
25dbc73a AM |
2295 | if (eind->dyn_relocs != NULL) |
2296 | { | |
2297 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 2298 | { |
25dbc73a AM |
2299 | struct ppc_elf_dyn_relocs **pp; |
2300 | struct ppc_elf_dyn_relocs *p; | |
3dab13f6 | 2301 | |
25dbc73a AM |
2302 | if (ind->root.type == bfd_link_hash_indirect) |
2303 | abort (); | |
2304 | ||
2305 | /* Add reloc counts against the weak sym to the strong sym | |
2306 | list. Merge any entries against the same section. */ | |
2307 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 2308 | { |
25dbc73a AM |
2309 | struct ppc_elf_dyn_relocs *q; |
2310 | ||
2311 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2312 | if (q->sec == p->sec) | |
2313 | { | |
2314 | q->pc_count += p->pc_count; | |
2315 | q->count += p->count; | |
2316 | *pp = p->next; | |
2317 | break; | |
2318 | } | |
2319 | if (q == NULL) | |
2320 | pp = &p->next; | |
3dab13f6 | 2321 | } |
25dbc73a | 2322 | *pp = edir->dyn_relocs; |
3dab13f6 | 2323 | } |
25dbc73a AM |
2324 | |
2325 | edir->dyn_relocs = eind->dyn_relocs; | |
2326 | eind->dyn_relocs = NULL; | |
3dab13f6 | 2327 | } |
3dab13f6 | 2328 | |
25dbc73a | 2329 | edir->tls_mask |= eind->tls_mask; |
3dab13f6 | 2330 | |
25dbc73a AM |
2331 | if (ELIMINATE_COPY_RELOCS |
2332 | && ind->root.type != bfd_link_hash_indirect | |
2333 | && dir->dynamic_adjusted) | |
2334 | { | |
2335 | /* If called to transfer flags for a weakdef during processing | |
2336 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
2337 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
2338 | dir->ref_dynamic |= ind->ref_dynamic; | |
2339 | dir->ref_regular |= ind->ref_regular; | |
2340 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
2341 | dir->needs_plt |= ind->needs_plt; | |
2342 | } | |
2343 | else | |
2344 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
2345 | } | |
3dab13f6 | 2346 | |
8853c3d3 AM |
2347 | /* Return 1 if target is one of ours. */ |
2348 | ||
2349 | static bfd_boolean | |
2350 | is_ppc_elf_target (const struct bfd_target *targ) | |
2351 | { | |
2352 | extern const bfd_target bfd_elf32_powerpc_vec; | |
2353 | extern const bfd_target bfd_elf32_powerpcle_vec; | |
2354 | ||
2355 | return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec; | |
2356 | } | |
2357 | ||
25dbc73a AM |
2358 | /* Hook called by the linker routine which adds symbols from an object |
2359 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 2360 | |
25dbc73a AM |
2361 | static bfd_boolean |
2362 | ppc_elf_add_symbol_hook (bfd *abfd, | |
2363 | struct bfd_link_info *info, | |
2364 | Elf_Internal_Sym *sym, | |
2365 | const char **namep ATTRIBUTE_UNUSED, | |
2366 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2367 | asection **secp, | |
2368 | bfd_vma *valp) | |
2369 | { | |
2370 | if (sym->st_shndx == SHN_COMMON | |
2371 | && !info->relocatable | |
2372 | && sym->st_size <= elf_gp_size (abfd) | |
d2663f46 | 2373 | && is_ppc_elf_target (info->hash->creator)) |
25dbc73a AM |
2374 | { |
2375 | /* Common symbols less than or equal to -G nn bytes are automatically | |
2376 | put into .sbss. */ | |
2377 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2378 | |
25dbc73a AM |
2379 | htab = ppc_elf_hash_table (info); |
2380 | if (htab->sbss == NULL) | |
2381 | { | |
644285ef | 2382 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 2383 | |
644285ef AM |
2384 | if (!htab->elf.dynobj) |
2385 | htab->elf.dynobj = abfd; | |
2386 | ||
2387 | htab->sbss = bfd_make_section_anyway (htab->elf.dynobj, ".sbss"); | |
25dbc73a | 2388 | if (htab->sbss == NULL |
644285ef | 2389 | || ! bfd_set_section_flags (htab->elf.dynobj, htab->sbss, flags)) |
25dbc73a | 2390 | return FALSE; |
3dab13f6 | 2391 | } |
3dab13f6 | 2392 | |
25dbc73a AM |
2393 | *secp = htab->sbss; |
2394 | *valp = sym->st_size; | |
2395 | } | |
3dab13f6 | 2396 | |
25dbc73a | 2397 | return TRUE; |
3dab13f6 AM |
2398 | } |
2399 | \f | |
c9a2f333 | 2400 | /* Create a special linker section. */ |
25dbc73a | 2401 | |
c9a2f333 | 2402 | static bfd_boolean |
55fd94b0 AM |
2403 | ppc_elf_create_linker_section (bfd *abfd, |
2404 | struct bfd_link_info *info, | |
c9a2f333 AM |
2405 | flagword flags, |
2406 | elf_linker_section_t *lsect) | |
252b5132 | 2407 | { |
58111eb7 | 2408 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
c9a2f333 | 2409 | asection *s; |
58111eb7 | 2410 | |
c9a2f333 AM |
2411 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2412 | | SEC_LINKER_CREATED); | |
58111eb7 AM |
2413 | |
2414 | /* Record the first bfd that needs the special sections. */ | |
2415 | if (!htab->elf.dynobj) | |
2416 | htab->elf.dynobj = abfd; | |
2417 | ||
76750a2f AM |
2418 | s = bfd_make_section_anyway (htab->elf.dynobj, lsect->name); |
2419 | if (s == NULL | |
2420 | || !bfd_set_section_flags (htab->elf.dynobj, s, flags) | |
2421 | || !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) | |
c9a2f333 | 2422 | return FALSE; |
76750a2f | 2423 | lsect->section = s; |
58111eb7 | 2424 | |
c9a2f333 | 2425 | return TRUE; |
252b5132 | 2426 | } |
252b5132 | 2427 | |
25dbc73a AM |
2428 | /* Find a linker generated pointer with a given addend and type. */ |
2429 | ||
2430 | static elf_linker_section_pointers_t * | |
2431 | elf_find_pointer_linker_section | |
2432 | (elf_linker_section_pointers_t *linker_pointers, | |
2433 | bfd_vma addend, | |
2434 | elf_linker_section_t *lsect) | |
252b5132 | 2435 | { |
25dbc73a AM |
2436 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
2437 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
2438 | return linker_pointers; | |
252b5132 | 2439 | |
25dbc73a AM |
2440 | return NULL; |
2441 | } | |
2442 | ||
2443 | /* Allocate a pointer to live in a linker created section. */ | |
2444 | ||
2445 | static bfd_boolean | |
2446 | elf_create_pointer_linker_section (bfd *abfd, | |
25dbc73a AM |
2447 | elf_linker_section_t *lsect, |
2448 | struct elf_link_hash_entry *h, | |
2449 | const Elf_Internal_Rela *rel) | |
2450 | { | |
2451 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2452 | elf_linker_section_pointers_t *linker_section_ptr; | |
2453 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2454 | bfd_size_type amt; | |
2455 | ||
2456 | BFD_ASSERT (lsect != NULL); | |
2457 | ||
2458 | /* Is this a global symbol? */ | |
2459 | if (h != NULL) | |
2460 | { | |
2461 | struct ppc_elf_link_hash_entry *eh; | |
2462 | ||
2463 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2464 | eh = (struct ppc_elf_link_hash_entry *) h; | |
2465 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
2466 | rel->r_addend, | |
2467 | lsect)) | |
2468 | return TRUE; | |
2469 | ||
2470 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
2471 | } |
2472 | else | |
2473 | { | |
2474 | /* Allocation of a pointer to a local symbol. */ | |
2475 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2476 | ||
2477 | /* Allocate a table to hold the local symbols if first time. */ | |
2478 | if (!ptr) | |
2479 | { | |
2480 | unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; | |
2481 | ||
2482 | amt = num_symbols; | |
2483 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2484 | ptr = bfd_zalloc (abfd, amt); | |
2485 | ||
2486 | if (!ptr) | |
2487 | return FALSE; | |
2488 | ||
2489 | elf_local_ptr_offsets (abfd) = ptr; | |
2490 | } | |
2491 | ||
2492 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2493 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2494 | rel->r_addend, | |
2495 | lsect)) | |
2496 | return TRUE; | |
252b5132 | 2497 | |
25dbc73a | 2498 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 2499 | } |
41fcb14e | 2500 | |
25dbc73a AM |
2501 | /* Allocate space for a pointer in the linker section, and allocate |
2502 | a new pointer record from internal memory. */ | |
2503 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2504 | amt = sizeof (elf_linker_section_pointers_t); | |
2505 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 2506 | |
25dbc73a | 2507 | if (!linker_section_ptr) |
7619e7c7 | 2508 | return FALSE; |
41fcb14e | 2509 | |
25dbc73a AM |
2510 | linker_section_ptr->next = *ptr_linker_section_ptr; |
2511 | linker_section_ptr->addend = rel->r_addend; | |
2512 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 2513 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 2514 | |
25dbc73a AM |
2515 | linker_section_ptr->offset = lsect->section->size; |
2516 | lsect->section->size += 4; | |
7619e7c7 | 2517 | |
25dbc73a AM |
2518 | #ifdef DEBUG |
2519 | fprintf (stderr, | |
2520 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2521 | lsect->name, (long) linker_section_ptr->offset, | |
2522 | (long) lsect->section->size); | |
2523 | #endif | |
7619e7c7 AM |
2524 | |
2525 | return TRUE; | |
41fcb14e AM |
2526 | } |
2527 | ||
b34976b6 | 2528 | static bfd_boolean |
25dbc73a AM |
2529 | update_local_sym_info (bfd *abfd, |
2530 | Elf_Internal_Shdr *symtab_hdr, | |
2531 | unsigned long r_symndx, | |
2532 | int tls_type) | |
252b5132 | 2533 | { |
25dbc73a AM |
2534 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
2535 | char *local_got_tls_masks; | |
252b5132 | 2536 | |
25dbc73a | 2537 | if (local_got_refcounts == NULL) |
252b5132 | 2538 | { |
25dbc73a AM |
2539 | bfd_size_type size = symtab_hdr->sh_info; |
2540 | ||
2541 | size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); | |
2542 | local_got_refcounts = bfd_zalloc (abfd, size); | |
2543 | if (local_got_refcounts == NULL) | |
b34976b6 | 2544 | return FALSE; |
25dbc73a | 2545 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 2546 | } |
41fcb14e | 2547 | |
25dbc73a AM |
2548 | local_got_refcounts[r_symndx] += 1; |
2549 | local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
2550 | local_got_tls_masks[r_symndx] |= tls_type; | |
2551 | return TRUE; | |
2552 | } | |
41fcb14e | 2553 | |
25dbc73a AM |
2554 | static void |
2555 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
2556 | { | |
2557 | (*_bfd_error_handler) | |
2558 | (_("%B: relocation %s cannot be used when making a shared object"), | |
2559 | abfd, | |
2560 | ppc_elf_howto_table[r_type]->name); | |
2561 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
2562 | } |
2563 | ||
25dbc73a AM |
2564 | /* Look through the relocs for a section during the first phase, and |
2565 | allocate space in the global offset table or procedure linkage | |
2566 | table. */ | |
252b5132 | 2567 | |
b34976b6 | 2568 | static bfd_boolean |
25dbc73a AM |
2569 | ppc_elf_check_relocs (bfd *abfd, |
2570 | struct bfd_link_info *info, | |
2571 | asection *sec, | |
2572 | const Elf_Internal_Rela *relocs) | |
252b5132 | 2573 | { |
7619e7c7 | 2574 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
2575 | Elf_Internal_Shdr *symtab_hdr; |
2576 | struct elf_link_hash_entry **sym_hashes; | |
2577 | const Elf_Internal_Rela *rel; | |
2578 | const Elf_Internal_Rela *rel_end; | |
2579 | asection *sreloc; | |
2580 | ||
2581 | if (info->relocatable) | |
2582 | return TRUE; | |
252b5132 RH |
2583 | |
2584 | #ifdef DEBUG | |
25dbc73a AM |
2585 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
2586 | sec, abfd); | |
252b5132 RH |
2587 | #endif |
2588 | ||
25dbc73a AM |
2589 | /* Initialize howto table if not already done. */ |
2590 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2591 | ppc_elf_howto_init (); | |
2592 | ||
7619e7c7 | 2593 | htab = ppc_elf_hash_table (info); |
25dbc73a AM |
2594 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2595 | sym_hashes = elf_sym_hashes (abfd); | |
2596 | sreloc = NULL; | |
2597 | ||
2598 | rel_end = relocs + sec->reloc_count; | |
2599 | for (rel = relocs; rel < rel_end; rel++) | |
2600 | { | |
2601 | unsigned long r_symndx; | |
2602 | enum elf_ppc_reloc_type r_type; | |
2603 | struct elf_link_hash_entry *h; | |
2604 | int tls_type = 0; | |
2605 | ||
2606 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2607 | if (r_symndx < symtab_hdr->sh_info) | |
2608 | h = NULL; | |
2609 | else | |
2610 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2611 | ||
2612 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
2613 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
2614 | startup code. */ | |
2615 | if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 2616 | { |
25dbc73a AM |
2617 | if (htab->got == NULL) |
2618 | { | |
2619 | if (htab->elf.dynobj == NULL) | |
2620 | htab->elf.dynobj = abfd; | |
2621 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
2622 | return FALSE; | |
2623 | } | |
2624 | } | |
252b5132 | 2625 | |
25dbc73a AM |
2626 | r_type = ELF32_R_TYPE (rel->r_info); |
2627 | switch (r_type) | |
2628 | { | |
2629 | case R_PPC_GOT_TLSLD16: | |
2630 | case R_PPC_GOT_TLSLD16_LO: | |
2631 | case R_PPC_GOT_TLSLD16_HI: | |
2632 | case R_PPC_GOT_TLSLD16_HA: | |
2633 | htab->tlsld_got.refcount += 1; | |
2634 | tls_type = TLS_TLS | TLS_LD; | |
2635 | goto dogottls; | |
252b5132 | 2636 | |
25dbc73a AM |
2637 | case R_PPC_GOT_TLSGD16: |
2638 | case R_PPC_GOT_TLSGD16_LO: | |
2639 | case R_PPC_GOT_TLSGD16_HI: | |
2640 | case R_PPC_GOT_TLSGD16_HA: | |
2641 | tls_type = TLS_TLS | TLS_GD; | |
2642 | goto dogottls; | |
2643 | ||
2644 | case R_PPC_GOT_TPREL16: | |
2645 | case R_PPC_GOT_TPREL16_LO: | |
2646 | case R_PPC_GOT_TPREL16_HI: | |
2647 | case R_PPC_GOT_TPREL16_HA: | |
2648 | if (info->shared) | |
2649 | info->flags |= DF_STATIC_TLS; | |
2650 | tls_type = TLS_TLS | TLS_TPREL; | |
2651 | goto dogottls; | |
2652 | ||
2653 | case R_PPC_GOT_DTPREL16: | |
2654 | case R_PPC_GOT_DTPREL16_LO: | |
2655 | case R_PPC_GOT_DTPREL16_HI: | |
2656 | case R_PPC_GOT_DTPREL16_HA: | |
2657 | tls_type = TLS_TLS | TLS_DTPREL; | |
2658 | dogottls: | |
2659 | sec->has_tls_reloc = 1; | |
2660 | /* Fall thru */ | |
252b5132 | 2661 | |
25dbc73a AM |
2662 | /* GOT16 relocations */ |
2663 | case R_PPC_GOT16: | |
2664 | case R_PPC_GOT16_LO: | |
2665 | case R_PPC_GOT16_HI: | |
2666 | case R_PPC_GOT16_HA: | |
2667 | /* This symbol requires a global offset table entry. */ | |
2668 | if (htab->got == NULL) | |
2669 | { | |
2670 | if (htab->elf.dynobj == NULL) | |
2671 | htab->elf.dynobj = abfd; | |
2672 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
2673 | return FALSE; | |
2674 | } | |
2675 | if (h != NULL) | |
2676 | { | |
2677 | h->got.refcount += 1; | |
2678 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
2679 | } | |
2680 | else | |
2681 | /* This is a global offset table entry for a local symbol. */ | |
2682 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
2683 | return FALSE; | |
2684 | break; | |
252b5132 | 2685 | |
25dbc73a AM |
2686 | /* Indirect .sdata relocation. */ |
2687 | case R_PPC_EMB_SDAI16: | |
2688 | if (info->shared) | |
2689 | { | |
2690 | bad_shared_reloc (abfd, r_type); | |
2691 | return FALSE; | |
2692 | } | |
c9a2f333 AM |
2693 | if (htab->sdata[0].section == NULL |
2694 | && !ppc_elf_create_linker_section (abfd, info, 0, | |
2695 | &htab->sdata[0])) | |
2696 | return FALSE; | |
76750a2f AM |
2697 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0], |
2698 | h, rel)) | |
25dbc73a AM |
2699 | return FALSE; |
2700 | break; | |
252b5132 | 2701 | |
25dbc73a AM |
2702 | /* Indirect .sdata2 relocation. */ |
2703 | case R_PPC_EMB_SDA2I16: | |
2704 | if (info->shared) | |
2705 | { | |
2706 | bad_shared_reloc (abfd, r_type); | |
2707 | return FALSE; | |
2708 | } | |
c9a2f333 AM |
2709 | if (htab->sdata[1].section == NULL |
2710 | && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
2711 | &htab->sdata[1])) | |
2712 | return FALSE; | |
76750a2f AM |
2713 | if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1], |
2714 | h, rel)) | |
25dbc73a AM |
2715 | return FALSE; |
2716 | break; | |
252b5132 | 2717 | |
25dbc73a AM |
2718 | case R_PPC_SDAREL16: |
2719 | case R_PPC_EMB_SDA2REL: | |
2720 | case R_PPC_EMB_SDA21: | |
2721 | case R_PPC_EMB_RELSDA: | |
2722 | case R_PPC_EMB_NADDR32: | |
2723 | case R_PPC_EMB_NADDR16: | |
2724 | case R_PPC_EMB_NADDR16_LO: | |
2725 | case R_PPC_EMB_NADDR16_HI: | |
2726 | case R_PPC_EMB_NADDR16_HA: | |
2727 | if (info->shared) | |
2728 | { | |
2729 | bad_shared_reloc (abfd, r_type); | |
2730 | return FALSE; | |
2731 | } | |
2732 | break; | |
252b5132 | 2733 | |
25dbc73a AM |
2734 | case R_PPC_PLT32: |
2735 | case R_PPC_PLTREL24: | |
2736 | case R_PPC_PLTREL32: | |
2737 | case R_PPC_PLT16_LO: | |
2738 | case R_PPC_PLT16_HI: | |
2739 | case R_PPC_PLT16_HA: | |
2740 | #ifdef DEBUG | |
2741 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
2742 | #endif | |
2743 | /* This symbol requires a procedure linkage table entry. We | |
2744 | actually build the entry in finish_dynamic_symbol, | |
2745 | because this might be a case of linking PIC code without | |
2746 | linking in any dynamic objects, in which case we don't | |
2747 | need to generate a procedure linkage table after all. */ | |
7619e7c7 | 2748 | |
25dbc73a AM |
2749 | if (h == NULL) |
2750 | { | |
2751 | /* It does not make sense to have a procedure linkage | |
2752 | table entry for a local symbol. */ | |
2753 | (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against " | |
2754 | "local symbol"), | |
2755 | abfd, | |
2756 | sec, | |
2757 | (long) rel->r_offset, | |
2758 | ppc_elf_howto_table[r_type]->name); | |
2759 | bfd_set_error (bfd_error_bad_value); | |
2760 | return FALSE; | |
2761 | } | |
ee05f2fe | 2762 | |
25dbc73a AM |
2763 | h->needs_plt = 1; |
2764 | h->plt.refcount++; | |
2765 | break; | |
ee05f2fe | 2766 | |
25dbc73a AM |
2767 | /* The following relocations don't need to propagate the |
2768 | relocation if linking a shared object since they are | |
2769 | section relative. */ | |
2770 | case R_PPC_SECTOFF: | |
2771 | case R_PPC_SECTOFF_LO: | |
2772 | case R_PPC_SECTOFF_HI: | |
2773 | case R_PPC_SECTOFF_HA: | |
2774 | case R_PPC_DTPREL16: | |
2775 | case R_PPC_DTPREL16_LO: | |
2776 | case R_PPC_DTPREL16_HI: | |
2777 | case R_PPC_DTPREL16_HA: | |
2778 | case R_PPC_TOC16: | |
2779 | break; | |
252b5132 | 2780 | |
25dbc73a AM |
2781 | /* This are just markers. */ |
2782 | case R_PPC_TLS: | |
2783 | case R_PPC_EMB_MRKREF: | |
2784 | case R_PPC_NONE: | |
2785 | case R_PPC_max: | |
2786 | break; | |
252b5132 | 2787 | |
25dbc73a AM |
2788 | /* These should only appear in dynamic objects. */ |
2789 | case R_PPC_COPY: | |
2790 | case R_PPC_GLOB_DAT: | |
2791 | case R_PPC_JMP_SLOT: | |
2792 | case R_PPC_RELATIVE: | |
2793 | break; | |
252b5132 | 2794 | |
25dbc73a AM |
2795 | /* These aren't handled yet. We'll report an error later. */ |
2796 | case R_PPC_ADDR30: | |
2797 | case R_PPC_EMB_RELSEC16: | |
2798 | case R_PPC_EMB_RELST_LO: | |
2799 | case R_PPC_EMB_RELST_HI: | |
2800 | case R_PPC_EMB_RELST_HA: | |
2801 | case R_PPC_EMB_BIT_FLD: | |
2802 | break; | |
252b5132 | 2803 | |
25dbc73a AM |
2804 | /* This refers only to functions defined in the shared library. */ |
2805 | case R_PPC_LOCAL24PC: | |
2806 | break; | |
252b5132 | 2807 | |
25dbc73a AM |
2808 | /* This relocation describes the C++ object vtable hierarchy. |
2809 | Reconstruct it for later use during GC. */ | |
2810 | case R_PPC_GNU_VTINHERIT: | |
2811 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
2812 | return FALSE; | |
2813 | break; | |
252b5132 | 2814 | |
25dbc73a AM |
2815 | /* This relocation describes which C++ vtable entries are actually |
2816 | used. Record for later use during GC. */ | |
2817 | case R_PPC_GNU_VTENTRY: | |
2818 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
2819 | return FALSE; | |
2820 | break; | |
252b5132 | 2821 | |
25dbc73a AM |
2822 | /* We shouldn't really be seeing these. */ |
2823 | case R_PPC_TPREL32: | |
2824 | if (info->shared) | |
2825 | info->flags |= DF_STATIC_TLS; | |
2826 | goto dodyn; | |
252b5132 | 2827 | |
25dbc73a AM |
2828 | /* Nor these. */ |
2829 | case R_PPC_DTPMOD32: | |
2830 | case R_PPC_DTPREL32: | |
2831 | goto dodyn; | |
252b5132 | 2832 | |
25dbc73a AM |
2833 | case R_PPC_TPREL16: |
2834 | case R_PPC_TPREL16_LO: | |
2835 | case R_PPC_TPREL16_HI: | |
2836 | case R_PPC_TPREL16_HA: | |
2837 | if (info->shared) | |
2838 | info->flags |= DF_STATIC_TLS; | |
2839 | goto dodyn; | |
ee05f2fe | 2840 | |
25dbc73a AM |
2841 | /* When creating a shared object, we must copy these |
2842 | relocs into the output file. We create a reloc | |
2843 | section in dynobj and make room for the reloc. */ | |
2844 | case R_PPC_REL24: | |
2845 | case R_PPC_REL14: | |
2846 | case R_PPC_REL14_BRTAKEN: | |
2847 | case R_PPC_REL14_BRNTAKEN: | |
2848 | case R_PPC_REL32: | |
2849 | if (h == NULL | |
2850 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2851 | break; | |
2852 | /* fall through */ | |
ee05f2fe | 2853 | |
25dbc73a AM |
2854 | case R_PPC_ADDR32: |
2855 | case R_PPC_ADDR24: | |
2856 | case R_PPC_ADDR16: | |
2857 | case R_PPC_ADDR16_LO: | |
2858 | case R_PPC_ADDR16_HI: | |
2859 | case R_PPC_ADDR16_HA: | |
2860 | case R_PPC_ADDR14: | |
2861 | case R_PPC_ADDR14_BRTAKEN: | |
2862 | case R_PPC_ADDR14_BRNTAKEN: | |
2863 | case R_PPC_UADDR32: | |
2864 | case R_PPC_UADDR16: | |
2865 | if (h != NULL && !info->shared) | |
2866 | { | |
2867 | /* We may need a plt entry if the symbol turns out to be | |
2868 | a function defined in a dynamic object. */ | |
2869 | h->plt.refcount++; | |
7fce784e | 2870 | |
25dbc73a AM |
2871 | /* We may need a copy reloc too. */ |
2872 | h->non_got_ref = 1; | |
2873 | } | |
7619e7c7 | 2874 | |
25dbc73a AM |
2875 | dodyn: |
2876 | /* If we are creating a shared library, and this is a reloc | |
2877 | against a global symbol, or a non PC relative reloc | |
2878 | against a local symbol, then we need to copy the reloc | |
2879 | into the shared library. However, if we are linking with | |
2880 | -Bsymbolic, we do not need to copy a reloc against a | |
2881 | global symbol which is defined in an object we are | |
2882 | including in the link (i.e., DEF_REGULAR is set). At | |
2883 | this point we have not seen all the input files, so it is | |
2884 | possible that DEF_REGULAR is not set now but will be set | |
2885 | later (it is never cleared). In case of a weak definition, | |
2886 | DEF_REGULAR may be cleared later by a strong definition in | |
2887 | a shared library. We account for that possibility below by | |
2888 | storing information in the dyn_relocs field of the hash | |
2889 | table entry. A similar situation occurs when creating | |
2890 | shared libraries and symbol visibility changes render the | |
2891 | symbol local. | |
7619e7c7 | 2892 | |
25dbc73a AM |
2893 | If on the other hand, we are creating an executable, we |
2894 | may need to keep relocations for symbols satisfied by a | |
2895 | dynamic library if we manage to avoid copy relocs for the | |
2896 | symbol. */ | |
2897 | if ((info->shared | |
2898 | && (MUST_BE_DYN_RELOC (r_type) | |
2899 | || (h != NULL | |
2900 | && (! info->symbolic | |
2901 | || h->root.type == bfd_link_hash_defweak | |
2902 | || !h->def_regular)))) | |
2903 | || (ELIMINATE_COPY_RELOCS | |
2904 | && !info->shared | |
2905 | && (sec->flags & SEC_ALLOC) != 0 | |
2906 | && h != NULL | |
2907 | && (h->root.type == bfd_link_hash_defweak | |
2908 | || !h->def_regular))) | |
2909 | { | |
2910 | struct ppc_elf_dyn_relocs *p; | |
2911 | struct ppc_elf_dyn_relocs **head; | |
7619e7c7 | 2912 | |
25dbc73a AM |
2913 | #ifdef DEBUG |
2914 | fprintf (stderr, | |
2915 | "ppc_elf_check_relocs needs to " | |
2916 | "create relocation for %s\n", | |
2917 | (h && h->root.root.string | |
2918 | ? h->root.root.string : "<unknown>")); | |
2919 | #endif | |
2920 | if (sreloc == NULL) | |
2921 | { | |
2922 | const char *name; | |
7619e7c7 | 2923 | |
25dbc73a AM |
2924 | name = (bfd_elf_string_from_elf_section |
2925 | (abfd, | |
2926 | elf_elfheader (abfd)->e_shstrndx, | |
2927 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2928 | if (name == NULL) | |
2929 | return FALSE; | |
7619e7c7 | 2930 | |
25dbc73a AM |
2931 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
2932 | && strcmp (bfd_get_section_name (abfd, sec), | |
2933 | name + 5) == 0); | |
7619e7c7 | 2934 | |
c9a2f333 AM |
2935 | if (htab->elf.dynobj == NULL) |
2936 | htab->elf.dynobj = abfd; | |
25dbc73a AM |
2937 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
2938 | if (sreloc == NULL) | |
2939 | { | |
2940 | flagword flags; | |
7619e7c7 | 2941 | |
25dbc73a AM |
2942 | sreloc = bfd_make_section (htab->elf.dynobj, name); |
2943 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
2944 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2945 | if ((sec->flags & SEC_ALLOC) != 0) | |
2946 | flags |= SEC_ALLOC | SEC_LOAD; | |
2947 | if (sreloc == NULL | |
2948 | || ! bfd_set_section_flags (htab->elf.dynobj, | |
2949 | sreloc, flags) | |
2950 | || ! bfd_set_section_alignment (htab->elf.dynobj, | |
2951 | sreloc, 2)) | |
2952 | return FALSE; | |
2953 | } | |
2954 | elf_section_data (sec)->sreloc = sreloc; | |
2955 | } | |
7619e7c7 | 2956 | |
25dbc73a AM |
2957 | /* If this is a global symbol, we count the number of |
2958 | relocations we need for this symbol. */ | |
2959 | if (h != NULL) | |
2960 | { | |
2961 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
2962 | } | |
2963 | else | |
2964 | { | |
2965 | /* Track dynamic relocs needed for local syms too. | |
2966 | We really need local syms available to do this | |
2967 | easily. Oh well. */ | |
7619e7c7 | 2968 | |
25dbc73a AM |
2969 | asection *s; |
2970 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
2971 | sec, r_symndx); | |
2972 | if (s == NULL) | |
2973 | return FALSE; | |
7fce784e | 2974 | |
25dbc73a AM |
2975 | head = ((struct ppc_elf_dyn_relocs **) |
2976 | &elf_section_data (s)->local_dynrel); | |
2977 | } | |
7fce784e | 2978 | |
25dbc73a AM |
2979 | p = *head; |
2980 | if (p == NULL || p->sec != sec) | |
2981 | { | |
2982 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
2983 | if (p == NULL) | |
2984 | return FALSE; | |
2985 | p->next = *head; | |
2986 | *head = p; | |
2987 | p->sec = sec; | |
2988 | p->count = 0; | |
2989 | p->pc_count = 0; | |
2990 | } | |
2991 | ||
2992 | p->count += 1; | |
2993 | if (!MUST_BE_DYN_RELOC (r_type)) | |
2994 | p->pc_count += 1; | |
7619e7c7 | 2995 | } |
25dbc73a AM |
2996 | |
2997 | break; | |
7619e7c7 AM |
2998 | } |
2999 | } | |
ee05f2fe | 3000 | |
25dbc73a AM |
3001 | return TRUE; |
3002 | } | |
3003 | \f | |
8853c3d3 AM |
3004 | /* Merge backend specific data from an object file to the output |
3005 | object file when linking. */ | |
3006 | ||
3007 | static bfd_boolean | |
3008 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
3009 | { | |
3010 | flagword old_flags; | |
3011 | flagword new_flags; | |
3012 | bfd_boolean error; | |
3013 | ||
3014 | if (!is_ppc_elf_target (ibfd->xvec) | |
3015 | || !is_ppc_elf_target (obfd->xvec)) | |
3016 | return TRUE; | |
3017 | ||
3018 | /* Check if we have the same endianess. */ | |
3019 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) | |
3020 | return FALSE; | |
3021 | ||
3022 | new_flags = elf_elfheader (ibfd)->e_flags; | |
3023 | old_flags = elf_elfheader (obfd)->e_flags; | |
3024 | if (!elf_flags_init (obfd)) | |
3025 | { | |
3026 | /* First call, no flags set. */ | |
3027 | elf_flags_init (obfd) = TRUE; | |
3028 | elf_elfheader (obfd)->e_flags = new_flags; | |
3029 | } | |
3030 | ||
3031 | /* Compatible flags are ok. */ | |
3032 | else if (new_flags == old_flags) | |
3033 | ; | |
3034 | ||
3035 | /* Incompatible flags. */ | |
3036 | else | |
3037 | { | |
3038 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
3039 | to be linked with either. */ | |
3040 | error = FALSE; | |
3041 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
3042 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
3043 | { | |
3044 | error = TRUE; | |
3045 | (*_bfd_error_handler) | |
3046 | (_("%B: compiled with -mrelocatable and linked with " | |
3047 | "modules compiled normally"), ibfd); | |
3048 | } | |
3049 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
3050 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
3051 | { | |
3052 | error = TRUE; | |
3053 | (*_bfd_error_handler) | |
3054 | (_("%B: compiled normally and linked with " | |
3055 | "modules compiled with -mrelocatable"), ibfd); | |
3056 | } | |
3057 | ||
3058 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
3059 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
3060 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
3061 | ||
3062 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3063 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
3064 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
3065 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
3066 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
3067 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
3068 | ||
3069 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
3070 | any module uses it. */ | |
3071 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
3072 | ||
3073 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3074 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3075 | ||
3076 | /* Warn about any other mismatches. */ | |
3077 | if (new_flags != old_flags) | |
3078 | { | |
3079 | error = TRUE; | |
3080 | (*_bfd_error_handler) | |
3081 | (_("%B: uses different e_flags (0x%lx) fields " | |
3082 | "than previous modules (0x%lx)"), | |
3083 | ibfd, (long) new_flags, (long) old_flags); | |
3084 | } | |
3085 | ||
3086 | if (error) | |
3087 | { | |
3088 | bfd_set_error (bfd_error_bad_value); | |
3089 | return FALSE; | |
3090 | } | |
3091 | } | |
3092 | ||
3093 | return TRUE; | |
3094 | } | |
3095 | \f | |
25dbc73a AM |
3096 | /* Return the section that should be marked against GC for a given |
3097 | relocation. */ | |
586119b3 | 3098 | |
25dbc73a AM |
3099 | static asection * |
3100 | ppc_elf_gc_mark_hook (asection *sec, | |
3101 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3102 | Elf_Internal_Rela *rel, | |
3103 | struct elf_link_hash_entry *h, | |
3104 | Elf_Internal_Sym *sym) | |
3105 | { | |
3106 | if (h != NULL) | |
ee05f2fe | 3107 | { |
25dbc73a | 3108 | switch (ELF32_R_TYPE (rel->r_info)) |
ee05f2fe | 3109 | { |
25dbc73a AM |
3110 | case R_PPC_GNU_VTINHERIT: |
3111 | case R_PPC_GNU_VTENTRY: | |
3112 | break; | |
ee05f2fe | 3113 | |
25dbc73a AM |
3114 | default: |
3115 | switch (h->root.type) | |
ee05f2fe | 3116 | { |
25dbc73a AM |
3117 | case bfd_link_hash_defined: |
3118 | case bfd_link_hash_defweak: | |
3119 | return h->root.u.def.section; | |
3120 | ||
3121 | case bfd_link_hash_common: | |
3122 | return h->root.u.c.p->section; | |
3123 | ||
3124 | default: | |
3125 | break; | |
ee05f2fe AM |
3126 | } |
3127 | } | |
25dbc73a AM |
3128 | } |
3129 | else | |
3130 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
4e795f50 | 3131 | |
25dbc73a AM |
3132 | return NULL; |
3133 | } | |
a876ecf9 | 3134 | |
25dbc73a AM |
3135 | /* Update the got, plt and dynamic reloc reference counts for the |
3136 | section being removed. */ | |
3137 | ||
3138 | static bfd_boolean | |
3139 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
3140 | struct bfd_link_info *info, | |
3141 | asection *sec, | |
3142 | const Elf_Internal_Rela *relocs) | |
3143 | { | |
3144 | struct ppc_elf_link_hash_table *htab; | |
3145 | Elf_Internal_Shdr *symtab_hdr; | |
3146 | struct elf_link_hash_entry **sym_hashes; | |
3147 | bfd_signed_vma *local_got_refcounts; | |
3148 | const Elf_Internal_Rela *rel, *relend; | |
3149 | ||
3150 | elf_section_data (sec)->local_dynrel = NULL; | |
3151 | ||
3152 | htab = ppc_elf_hash_table (info); | |
3153 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3154 | sym_hashes = elf_sym_hashes (abfd); | |
3155 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
3156 | ||
3157 | relend = relocs + sec->reloc_count; | |
3158 | for (rel = relocs; rel < relend; rel++) | |
3159 | { | |
3160 | unsigned long r_symndx; | |
3161 | enum elf_ppc_reloc_type r_type; | |
3162 | struct elf_link_hash_entry *h = NULL; | |
3163 | ||
3164 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3165 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 3166 | { |
25dbc73a AM |
3167 | struct ppc_elf_dyn_relocs **pp, *p; |
3168 | struct ppc_elf_link_hash_entry *eh; | |
3169 | ||
3170 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3171 | while (h->root.type == bfd_link_hash_indirect | |
3172 | || h->root.type == bfd_link_hash_warning) | |
3173 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3174 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3175 | ||
3176 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3177 | if (p->sec == sec) | |
3178 | { | |
3179 | /* Everything must go for SEC. */ | |
3180 | *pp = p->next; | |
3181 | break; | |
3182 | } | |
a876ecf9 | 3183 | } |
ee05f2fe | 3184 | |
25dbc73a AM |
3185 | r_type = ELF32_R_TYPE (rel->r_info); |
3186 | switch (r_type) | |
ee05f2fe | 3187 | { |
25dbc73a AM |
3188 | case R_PPC_GOT_TLSLD16: |
3189 | case R_PPC_GOT_TLSLD16_LO: | |
3190 | case R_PPC_GOT_TLSLD16_HI: | |
3191 | case R_PPC_GOT_TLSLD16_HA: | |
3192 | htab->tlsld_got.refcount -= 1; | |
3193 | /* Fall thru */ | |
3194 | ||
3195 | case R_PPC_GOT_TLSGD16: | |
3196 | case R_PPC_GOT_TLSGD16_LO: | |
3197 | case R_PPC_GOT_TLSGD16_HI: | |
3198 | case R_PPC_GOT_TLSGD16_HA: | |
3199 | case R_PPC_GOT_TPREL16: | |
3200 | case R_PPC_GOT_TPREL16_LO: | |
3201 | case R_PPC_GOT_TPREL16_HI: | |
3202 | case R_PPC_GOT_TPREL16_HA: | |
3203 | case R_PPC_GOT_DTPREL16: | |
3204 | case R_PPC_GOT_DTPREL16_LO: | |
3205 | case R_PPC_GOT_DTPREL16_HI: | |
3206 | case R_PPC_GOT_DTPREL16_HA: | |
3207 | case R_PPC_GOT16: | |
3208 | case R_PPC_GOT16_LO: | |
3209 | case R_PPC_GOT16_HI: | |
3210 | case R_PPC_GOT16_HA: | |
3211 | if (h != NULL) | |
ee05f2fe | 3212 | { |
25dbc73a AM |
3213 | if (h->got.refcount > 0) |
3214 | h->got.refcount--; | |
ee05f2fe | 3215 | } |
25dbc73a AM |
3216 | else if (local_got_refcounts != NULL) |
3217 | { | |
3218 | if (local_got_refcounts[r_symndx] > 0) | |
3219 | local_got_refcounts[r_symndx]--; | |
3220 | } | |
3221 | break; | |
ee05f2fe | 3222 | |
25dbc73a AM |
3223 | case R_PPC_REL24: |
3224 | case R_PPC_REL14: | |
3225 | case R_PPC_REL14_BRTAKEN: | |
3226 | case R_PPC_REL14_BRNTAKEN: | |
3227 | case R_PPC_REL32: | |
3228 | if (h == NULL | |
3229 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3230 | break; | |
3231 | /* Fall thru */ | |
ee05f2fe | 3232 | |
25dbc73a AM |
3233 | case R_PPC_ADDR32: |
3234 | case R_PPC_ADDR24: | |
3235 | case R_PPC_ADDR16: | |
3236 | case R_PPC_ADDR16_LO: | |
3237 | case R_PPC_ADDR16_HI: | |
3238 | case R_PPC_ADDR16_HA: | |
3239 | case R_PPC_ADDR14: | |
3240 | case R_PPC_ADDR14_BRTAKEN: | |
3241 | case R_PPC_ADDR14_BRNTAKEN: | |
3242 | case R_PPC_UADDR32: | |
3243 | case R_PPC_UADDR16: | |
3244 | case R_PPC_PLT32: | |
3245 | case R_PPC_PLTREL24: | |
3246 | case R_PPC_PLT16_LO: | |
3247 | case R_PPC_PLT16_HI: | |
3248 | case R_PPC_PLT16_HA: | |
3249 | if (h != NULL) | |
3250 | { | |
3251 | if (h->plt.refcount > 0) | |
3252 | h->plt.refcount--; | |
3253 | } | |
3254 | break; | |
ee05f2fe | 3255 | |
25dbc73a AM |
3256 | default: |
3257 | break; | |
3258 | } | |
7fce784e | 3259 | } |
7fce784e AS |
3260 | return TRUE; |
3261 | } | |
25dbc73a AM |
3262 | \f |
3263 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ | |
7fce784e | 3264 | |
25dbc73a AM |
3265 | asection * |
3266 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) | |
7fce784e | 3267 | { |
25dbc73a | 3268 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 3269 | |
25dbc73a AM |
3270 | htab = ppc_elf_hash_table (info); |
3271 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
3272 | FALSE, FALSE, TRUE); | |
7fce784e | 3273 | |
25dbc73a | 3274 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
3275 | } |
3276 | ||
25dbc73a AM |
3277 | /* Run through all the TLS relocs looking for optimization |
3278 | opportunities. */ | |
252b5132 | 3279 | |
25dbc73a AM |
3280 | bfd_boolean |
3281 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
3282 | struct bfd_link_info *info) | |
252b5132 | 3283 | { |
7fce784e | 3284 | bfd *ibfd; |
25dbc73a AM |
3285 | asection *sec; |
3286 | struct ppc_elf_link_hash_table *htab; | |
252b5132 | 3287 | |
25dbc73a AM |
3288 | if (info->relocatable || info->shared) |
3289 | return TRUE; | |
252b5132 | 3290 | |
7619e7c7 | 3291 | htab = ppc_elf_hash_table (info); |
25dbc73a | 3292 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
252b5132 | 3293 | { |
25dbc73a AM |
3294 | Elf_Internal_Sym *locsyms = NULL; |
3295 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7619e7c7 | 3296 | |
25dbc73a AM |
3297 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
3298 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
3299 | { | |
3300 | Elf_Internal_Rela *relstart, *rel, *relend; | |
3301 | int expecting_tls_get_addr; | |
252b5132 | 3302 | |
25dbc73a AM |
3303 | /* Read the relocations. */ |
3304 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
3305 | info->keep_memory); | |
3306 | if (relstart == NULL) | |
3307 | return FALSE; | |
7619e7c7 | 3308 | |
25dbc73a AM |
3309 | expecting_tls_get_addr = 0; |
3310 | relend = relstart + sec->reloc_count; | |
3311 | for (rel = relstart; rel < relend; rel++) | |
3312 | { | |
3313 | enum elf_ppc_reloc_type r_type; | |
3314 | unsigned long r_symndx; | |
3315 | struct elf_link_hash_entry *h = NULL; | |
3316 | char *tls_mask; | |
3317 | char tls_set, tls_clear; | |
3318 | bfd_boolean is_local; | |
7fce784e | 3319 | |
25dbc73a AM |
3320 | r_symndx = ELF32_R_SYM (rel->r_info); |
3321 | if (r_symndx >= symtab_hdr->sh_info) | |
3322 | { | |
3323 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 3324 | |
25dbc73a AM |
3325 | sym_hashes = elf_sym_hashes (ibfd); |
3326 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3327 | while (h->root.type == bfd_link_hash_indirect | |
3328 | || h->root.type == bfd_link_hash_warning) | |
3329 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3330 | } | |
7619e7c7 | 3331 | |
25dbc73a AM |
3332 | is_local = FALSE; |
3333 | if (h == NULL | |
3334 | || !h->def_dynamic) | |
3335 | is_local = TRUE; | |
7619e7c7 | 3336 | |
25dbc73a AM |
3337 | r_type = ELF32_R_TYPE (rel->r_info); |
3338 | switch (r_type) | |
7619e7c7 | 3339 | { |
25dbc73a AM |
3340 | case R_PPC_GOT_TLSLD16: |
3341 | case R_PPC_GOT_TLSLD16_LO: | |
3342 | case R_PPC_GOT_TLSLD16_HI: | |
3343 | case R_PPC_GOT_TLSLD16_HA: | |
3344 | /* These relocs should never be against a symbol | |
3345 | defined in a shared lib. Leave them alone if | |
3346 | that turns out to be the case. */ | |
3347 | expecting_tls_get_addr = 0; | |
3348 | htab->tlsld_got.refcount -= 1; | |
3349 | if (!is_local) | |
3350 | continue; | |
3351 | ||
3352 | /* LD -> LE */ | |
3353 | tls_set = 0; | |
3354 | tls_clear = TLS_LD; | |
3355 | expecting_tls_get_addr = 1; | |
3356 | break; | |
3357 | ||
3358 | case R_PPC_GOT_TLSGD16: | |
3359 | case R_PPC_GOT_TLSGD16_LO: | |
3360 | case R_PPC_GOT_TLSGD16_HI: | |
3361 | case R_PPC_GOT_TLSGD16_HA: | |
3362 | if (is_local) | |
3363 | /* GD -> LE */ | |
3364 | tls_set = 0; | |
3365 | else | |
3366 | /* GD -> IE */ | |
3367 | tls_set = TLS_TLS | TLS_TPRELGD; | |
3368 | tls_clear = TLS_GD; | |
3369 | expecting_tls_get_addr = 1; | |
3370 | break; | |
3371 | ||
3372 | case R_PPC_GOT_TPREL16: | |
3373 | case R_PPC_GOT_TPREL16_LO: | |
3374 | case R_PPC_GOT_TPREL16_HI: | |
3375 | case R_PPC_GOT_TPREL16_HA: | |
3376 | expecting_tls_get_addr = 0; | |
3377 | if (is_local) | |
3378 | { | |
3379 | /* IE -> LE */ | |
3380 | tls_set = 0; | |
3381 | tls_clear = TLS_TPREL; | |
3382 | break; | |
3383 | } | |
3384 | else | |
3385 | continue; | |
3386 | ||
3387 | case R_PPC_REL14: | |
3388 | case R_PPC_REL14_BRTAKEN: | |
3389 | case R_PPC_REL14_BRNTAKEN: | |
3390 | case R_PPC_REL24: | |
3391 | if (expecting_tls_get_addr | |
3392 | && h != NULL | |
3393 | && h == htab->tls_get_addr) | |
3394 | { | |
3395 | if (h->plt.refcount > 0) | |
3396 | h->plt.refcount -= 1; | |
3397 | } | |
3398 | expecting_tls_get_addr = 0; | |
3399 | continue; | |
3400 | ||
3401 | default: | |
3402 | expecting_tls_get_addr = 0; | |
3403 | continue; | |
7619e7c7 | 3404 | } |
25dbc73a AM |
3405 | |
3406 | if (h != NULL) | |
7619e7c7 | 3407 | { |
25dbc73a AM |
3408 | if (tls_set == 0) |
3409 | { | |
3410 | /* We managed to get rid of a got entry. */ | |
3411 | if (h->got.refcount > 0) | |
3412 | h->got.refcount -= 1; | |
3413 | } | |
3414 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
3415 | } | |
3416 | else | |
3417 | { | |
3418 | Elf_Internal_Sym *sym; | |
3419 | bfd_signed_vma *lgot_refs; | |
3420 | char *lgot_masks; | |
3421 | ||
3422 | if (locsyms == NULL) | |
3423 | { | |
3424 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3425 | if (locsyms == NULL) | |
3426 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
3427 | symtab_hdr->sh_info, | |
3428 | 0, NULL, NULL, NULL); | |
3429 | if (locsyms == NULL) | |
3430 | { | |
3431 | if (elf_section_data (sec)->relocs != relstart) | |
3432 | free (relstart); | |
3433 | return FALSE; | |
3434 | } | |
3435 | } | |
3436 | sym = locsyms + r_symndx; | |
3437 | lgot_refs = elf_local_got_refcounts (ibfd); | |
3438 | if (lgot_refs == NULL) | |
3439 | abort (); | |
3440 | if (tls_set == 0) | |
3441 | { | |
3442 | /* We managed to get rid of a got entry. */ | |
3443 | if (lgot_refs[r_symndx] > 0) | |
3444 | lgot_refs[r_symndx] -= 1; | |
3445 | } | |
3446 | lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); | |
3447 | tls_mask = &lgot_masks[r_symndx]; | |
7619e7c7 | 3448 | } |
25dbc73a AM |
3449 | |
3450 | *tls_mask |= tls_set; | |
3451 | *tls_mask &= ~tls_clear; | |
7619e7c7 | 3452 | } |
25dbc73a AM |
3453 | |
3454 | if (elf_section_data (sec)->relocs != relstart) | |
3455 | free (relstart); | |
7619e7c7 | 3456 | } |
25dbc73a AM |
3457 | |
3458 | if (locsyms != NULL | |
3459 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
3460 | { | |
3461 | if (!info->keep_memory) | |
3462 | free (locsyms); | |
3463 | else | |
3464 | symtab_hdr->contents = (unsigned char *) locsyms; | |
3465 | } | |
7fce784e | 3466 | } |
25dbc73a AM |
3467 | return TRUE; |
3468 | } | |
3469 | \f | |
3470 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3471 | regular object. The current definition is in some section of the | |
3472 | dynamic object, but we're not including those sections. We have to | |
3473 | change the definition to something the rest of the link can | |
3474 | understand. */ | |
7fce784e | 3475 | |
25dbc73a AM |
3476 | static bfd_boolean |
3477 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
3478 | struct elf_link_hash_entry *h) | |
3479 | { | |
3480 | struct ppc_elf_link_hash_table *htab; | |
3481 | asection *s; | |
3482 | unsigned int power_of_two; | |
7fce784e | 3483 | |
25dbc73a AM |
3484 | #ifdef DEBUG |
3485 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
3486 | h->root.root.string); | |
3487 | #endif | |
252b5132 | 3488 | |
25dbc73a AM |
3489 | /* Make sure we know what is going on here. */ |
3490 | htab = ppc_elf_hash_table (info); | |
3491 | BFD_ASSERT (htab->elf.dynobj != NULL | |
3492 | && (h->needs_plt | |
3493 | || h->u.weakdef != NULL | |
3494 | || (h->def_dynamic | |
3495 | && h->ref_regular | |
3496 | && !h->def_regular))); | |
252b5132 | 3497 | |
25dbc73a AM |
3498 | /* Deal with function syms. */ |
3499 | if (h->type == STT_FUNC | |
3500 | || h->needs_plt) | |
3501 | { | |
3502 | /* Clear procedure linkage table information for any symbol that | |
3503 | won't need a .plt entry. */ | |
3504 | if (h->plt.refcount <= 0 | |
3505 | || SYMBOL_CALLS_LOCAL (info, h) | |
3506 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3507 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 | 3508 | { |
25dbc73a | 3509 | /* A PLT entry is not required/allowed when: |
252b5132 | 3510 | |
25dbc73a AM |
3511 | 1. We are not using ld.so; because then the PLT entry |
3512 | can't be set up, so we can't use one. In this case, | |
3513 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 3514 | |
25dbc73a AM |
3515 | 2. GC has rendered the entry unused. |
3516 | ||
3517 | 3. We know for certain that a call to this symbol | |
3518 | will go to this object, or will remain undefined. */ | |
3519 | h->plt.offset = (bfd_vma) -1; | |
3520 | h->needs_plt = 0; | |
3521 | } | |
3522 | return TRUE; | |
252b5132 | 3523 | } |
25dbc73a AM |
3524 | else |
3525 | h->plt.offset = (bfd_vma) -1; | |
252b5132 | 3526 | |
25dbc73a AM |
3527 | /* If this is a weak symbol, and there is a real definition, the |
3528 | processor independent code will have arranged for us to see the | |
3529 | real definition first, and we can just use the same value. */ | |
3530 | if (h->u.weakdef != NULL) | |
252b5132 | 3531 | { |
25dbc73a AM |
3532 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
3533 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3534 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3535 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
3536 | if (ELIMINATE_COPY_RELOCS) | |
3537 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
3538 | return TRUE; | |
3539 | } | |
dc810e39 | 3540 | |
25dbc73a AM |
3541 | /* This is a reference to a symbol defined by a dynamic object which |
3542 | is not a function. */ | |
252b5132 | 3543 | |
25dbc73a AM |
3544 | /* If we are creating a shared library, we must presume that the |
3545 | only references to the symbol are via the global offset table. | |
3546 | For such cases we need not do anything here; the relocations will | |
3547 | be handled correctly by relocate_section. */ | |
3548 | if (info->shared) | |
3549 | return TRUE; | |
252b5132 | 3550 | |
25dbc73a AM |
3551 | /* If there are no references to this symbol that do not use the |
3552 | GOT, we don't need to generate a copy reloc. */ | |
3553 | if (!h->non_got_ref) | |
3554 | return TRUE; | |
3555 | ||
3556 | if (ELIMINATE_COPY_RELOCS) | |
3557 | { | |
3558 | struct ppc_elf_dyn_relocs *p; | |
3559 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
252b5132 | 3560 | { |
25dbc73a AM |
3561 | s = p->sec->output_section; |
3562 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3563 | break; | |
252b5132 RH |
3564 | } |
3565 | ||
25dbc73a AM |
3566 | /* If we didn't find any dynamic relocs in read-only sections, then |
3567 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
3568 | if (p == NULL) | |
252b5132 | 3569 | { |
25dbc73a AM |
3570 | h->non_got_ref = 0; |
3571 | return TRUE; | |
252b5132 RH |
3572 | } |
3573 | } | |
3574 | ||
25dbc73a AM |
3575 | /* We must allocate the symbol in our .dynbss section, which will |
3576 | become part of the .bss section of the executable. There will be | |
3577 | an entry for this symbol in the .dynsym section. The dynamic | |
3578 | object will contain position independent code, so all references | |
3579 | from the dynamic object to this symbol will go through the global | |
3580 | offset table. The dynamic linker will use the .dynsym entry to | |
3581 | determine the address it must put in the global offset table, so | |
3582 | both the dynamic object and the regular object will refer to the | |
3583 | same memory location for the variable. | |
3584 | ||
3585 | Of course, if the symbol is sufficiently small, we must instead | |
3586 | allocate it in .sbss. FIXME: It would be better to do this if and | |
3587 | only if there were actually SDAREL relocs for that symbol. */ | |
3588 | ||
3589 | if (h->size <= elf_gp_size (htab->elf.dynobj)) | |
3590 | s = htab->dynsbss; | |
3591 | else | |
3592 | s = htab->dynbss; | |
3593 | BFD_ASSERT (s != NULL); | |
3594 | ||
3595 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
3596 | copy the initial value out of the dynamic object and into the | |
3597 | runtime process image. We need to remember the offset into the | |
3598 | .rela.bss section we are going to use. */ | |
3599 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3600 | { | |
3601 | asection *srel; | |
3602 | ||
3603 | if (h->size <= elf_gp_size (htab->elf.dynobj)) | |
3604 | srel = htab->relsbss; | |
3605 | else | |
3606 | srel = htab->relbss; | |
3607 | BFD_ASSERT (srel != NULL); | |
3608 | srel->size += sizeof (Elf32_External_Rela); | |
3609 | h->needs_copy = 1; | |
3610 | } | |
7619e7c7 | 3611 | |
25dbc73a AM |
3612 | /* We need to figure out the alignment required for this symbol. I |
3613 | have no idea how ELF linkers handle this. */ | |
3614 | power_of_two = bfd_log2 (h->size); | |
3615 | if (power_of_two > 4) | |
3616 | power_of_two = 4; | |
7619e7c7 | 3617 | |
25dbc73a AM |
3618 | /* Apply the required alignment. */ |
3619 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
3620 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
3621 | { | |
3622 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) | |
7619e7c7 | 3623 | return FALSE; |
7619e7c7 AM |
3624 | } |
3625 | ||
25dbc73a AM |
3626 | /* Define the symbol as being at this point in the section. */ |
3627 | h->root.u.def.section = s; | |
3628 | h->root.u.def.value = s->size; | |
7619e7c7 | 3629 | |
25dbc73a AM |
3630 | /* Increment the section size to make room for the symbol. */ |
3631 | s->size += h->size; | |
7619e7c7 | 3632 | |
25dbc73a AM |
3633 | return TRUE; |
3634 | } | |
3635 | \f | |
3636 | /* Allocate space in associated reloc sections for dynamic relocs. */ | |
252b5132 | 3637 | |
b34976b6 | 3638 | static bfd_boolean |
25dbc73a | 3639 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 3640 | { |
25dbc73a AM |
3641 | struct bfd_link_info *info = inf; |
3642 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 3643 | struct ppc_elf_link_hash_table *htab; |
25dbc73a | 3644 | struct ppc_elf_dyn_relocs *p; |
252b5132 | 3645 | |
25dbc73a | 3646 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 3647 | return TRUE; |
252b5132 | 3648 | |
25dbc73a AM |
3649 | if (h->root.type == bfd_link_hash_warning) |
3650 | /* When warning symbols are created, they **replace** the "real" | |
3651 | entry in the hash table, thus we never get to see the real | |
3652 | symbol in a hash traversal. So look at it now. */ | |
3653 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e47cd125 | 3654 | |
7619e7c7 | 3655 | htab = ppc_elf_hash_table (info); |
25dbc73a AM |
3656 | if (htab->elf.dynamic_sections_created |
3657 | && h->plt.refcount > 0) | |
252b5132 | 3658 | { |
25dbc73a AM |
3659 | /* Make sure this symbol is output as a dynamic symbol. */ |
3660 | if (h->dynindx == -1 | |
3661 | && !h->forced_local) | |
252b5132 | 3662 | { |
25dbc73a AM |
3663 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
3664 | return FALSE; | |
252b5132 RH |
3665 | } |
3666 | ||
25dbc73a AM |
3667 | if (info->shared |
3668 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
252b5132 | 3669 | { |
25dbc73a | 3670 | asection *s = htab->plt; |
7619e7c7 | 3671 | |
25dbc73a AM |
3672 | /* If this is the first .plt entry, make room for the special |
3673 | first entry. */ | |
3674 | if (s->size == 0) | |
3675 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
7619e7c7 | 3676 | |
25dbc73a AM |
3677 | /* The PowerPC PLT is actually composed of two parts, the |
3678 | first part is 2 words (for a load and a jump), and then | |
3679 | there is a remaining word available at the end. */ | |
3680 | h->plt.offset = (PLT_INITIAL_ENTRY_SIZE | |
3681 | + (PLT_SLOT_SIZE | |
3682 | * ((s->size - PLT_INITIAL_ENTRY_SIZE) | |
3683 | / PLT_ENTRY_SIZE))); | |
7619e7c7 | 3684 | |
25dbc73a AM |
3685 | /* If this symbol is not defined in a regular file, and we |
3686 | are not generating a shared library, then set the symbol | |
3687 | to this location in the .plt. This is required to make | |
3688 | function pointers compare as equal between the normal | |
3689 | executable and the shared library. */ | |
3690 | if (! info->shared | |
3691 | && !h->def_regular) | |
252b5132 | 3692 | { |
25dbc73a AM |
3693 | h->root.u.def.section = s; |
3694 | h->root.u.def.value = h->plt.offset; | |
252b5132 | 3695 | } |
252b5132 | 3696 | |
25dbc73a AM |
3697 | /* Make room for this entry. After the 8192nd entry, room |
3698 | for two entries is allocated. */ | |
3699 | s->size += PLT_ENTRY_SIZE; | |
3700 | if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
3701 | > PLT_NUM_SINGLE_ENTRIES) | |
3702 | s->size += PLT_ENTRY_SIZE; | |
3703 | ||
3704 | /* We also need to make an entry in the .rela.plt section. */ | |
3705 | htab->relplt->size += sizeof (Elf32_External_Rela); | |
3706 | } | |
3707 | else | |
3708 | { | |
3709 | h->plt.offset = (bfd_vma) -1; | |
3710 | h->needs_plt = 0; | |
3711 | } | |
3712 | } | |
3713 | else | |
3714 | { | |
3715 | h->plt.offset = (bfd_vma) -1; | |
3716 | h->needs_plt = 0; | |
3717 | } | |
3718 | ||
3719 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3720 | if (eh->elf.got.refcount > 0) | |
3721 | { | |
3722 | /* Make sure this symbol is output as a dynamic symbol. */ | |
3723 | if (eh->elf.dynindx == -1 | |
3724 | && !eh->elf.forced_local) | |
3725 | { | |
3726 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 3727 | return FALSE; |
25dbc73a | 3728 | } |
252b5132 | 3729 | |
25dbc73a AM |
3730 | if (eh->tls_mask == (TLS_TLS | TLS_LD) |
3731 | && !eh->elf.def_dynamic) | |
3732 | /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ | |
3733 | eh->elf.got.offset = (bfd_vma) -1; | |
3734 | else | |
3735 | { | |
3736 | bfd_boolean dyn; | |
3737 | eh->elf.got.offset = htab->got->size; | |
3738 | if ((eh->tls_mask & TLS_TLS) != 0) | |
252b5132 | 3739 | { |
25dbc73a AM |
3740 | if ((eh->tls_mask & TLS_LD) != 0) |
3741 | htab->got->size += 8; | |
3742 | if ((eh->tls_mask & TLS_GD) != 0) | |
3743 | htab->got->size += 8; | |
3744 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
3745 | htab->got->size += 4; | |
3746 | if ((eh->tls_mask & TLS_DTPREL) != 0) | |
3747 | htab->got->size += 4; | |
252b5132 | 3748 | } |
25dbc73a AM |
3749 | else |
3750 | htab->got->size += 4; | |
3751 | dyn = htab->elf.dynamic_sections_created; | |
3752 | if ((info->shared | |
3753 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
3754 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
3755 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 3756 | { |
25dbc73a AM |
3757 | /* All the entries we allocated need relocs. */ |
3758 | htab->relgot->size | |
3759 | += ((htab->got->size - eh->elf.got.offset) / 4 | |
3760 | * sizeof (Elf32_External_Rela)); | |
3761 | /* Except LD only needs one. */ | |
3762 | if ((eh->tls_mask & TLS_LD) != 0) | |
3763 | htab->relgot->size -= sizeof (Elf32_External_Rela); | |
252b5132 | 3764 | } |
25dbc73a AM |
3765 | } |
3766 | } | |
3767 | else | |
3768 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 3769 | |
25dbc73a AM |
3770 | if (eh->dyn_relocs == NULL) |
3771 | return TRUE; | |
252b5132 | 3772 | |
25dbc73a AM |
3773 | /* In the shared -Bsymbolic case, discard space allocated for |
3774 | dynamic pc-relative relocs against symbols which turn out to be | |
3775 | defined in regular objects. For the normal shared case, discard | |
3776 | space for relocs that have become local due to symbol visibility | |
3777 | changes. */ | |
3778 | ||
3779 | if (info->shared) | |
3780 | { | |
3781 | /* Relocs that use pc_count are those that appear on a call insn, | |
3782 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
3783 | generated via assembly. We want calls to protected symbols to | |
3784 | resolve directly to the function rather than going via the plt. | |
3785 | If people want function pointer comparisons to work as expected | |
3786 | then they should avoid writing weird assembly. */ | |
3787 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
3788 | { | |
3789 | struct ppc_elf_dyn_relocs **pp; | |
3790 | ||
3791 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 3792 | { |
25dbc73a AM |
3793 | p->count -= p->pc_count; |
3794 | p->pc_count = 0; | |
3795 | if (p->count == 0) | |
3796 | *pp = p->next; | |
3797 | else | |
3798 | pp = &p->next; | |
252b5132 | 3799 | } |
25dbc73a | 3800 | } |
252b5132 | 3801 | |
25dbc73a AM |
3802 | /* Also discard relocs on undefined weak syms with non-default |
3803 | visibility. */ | |
3804 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3805 | && h->root.type == bfd_link_hash_undefweak) | |
3806 | eh->dyn_relocs = NULL; | |
7619e7c7 | 3807 | |
25dbc73a AM |
3808 | /* Make sure undefined weak symbols are output as a dynamic symbol |
3809 | in PIEs. */ | |
3810 | if (info->pie | |
3811 | && eh->dyn_relocs != NULL | |
3812 | && h->dynindx == -1 | |
3813 | && h->root.type == bfd_link_hash_undefweak | |
3814 | && !h->forced_local) | |
3815 | { | |
3816 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3817 | return FALSE; | |
3818 | } | |
3819 | } | |
3820 | else if (ELIMINATE_COPY_RELOCS) | |
3821 | { | |
3822 | /* For the non-shared case, discard space for relocs against | |
3823 | symbols which turn out to need copy relocs or are not | |
3824 | dynamic. */ | |
7619e7c7 | 3825 | |
25dbc73a AM |
3826 | if (!h->non_got_ref |
3827 | && h->def_dynamic | |
3828 | && !h->def_regular) | |
3829 | { | |
3830 | /* Make sure this symbol is output as a dynamic symbol. | |
3831 | Undefined weak syms won't yet be marked as dynamic. */ | |
3832 | if (h->dynindx == -1 | |
3833 | && !h->forced_local) | |
3834 | { | |
3835 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3836 | return FALSE; | |
3837 | } | |
7619e7c7 | 3838 | |
25dbc73a AM |
3839 | /* If that succeeded, we know we'll be keeping all the |
3840 | relocs. */ | |
3841 | if (h->dynindx != -1) | |
3842 | goto keep; | |
3843 | } | |
252b5132 | 3844 | |
25dbc73a | 3845 | eh->dyn_relocs = NULL; |
252b5132 | 3846 | |
25dbc73a AM |
3847 | keep: ; |
3848 | } | |
252b5132 | 3849 | |
25dbc73a AM |
3850 | /* Finally, allocate space. */ |
3851 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3852 | { | |
3853 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
3854 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
3855 | } | |
252b5132 | 3856 | |
25dbc73a AM |
3857 | return TRUE; |
3858 | } | |
7619e7c7 | 3859 | |
25dbc73a | 3860 | /* Find any dynamic relocs that apply to read-only sections. */ |
7619e7c7 | 3861 | |
25dbc73a AM |
3862 | static bfd_boolean |
3863 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) | |
3864 | { | |
3865 | struct ppc_elf_dyn_relocs *p; | |
7619e7c7 | 3866 | |
25dbc73a AM |
3867 | if (h->root.type == bfd_link_hash_indirect) |
3868 | return TRUE; | |
252b5132 | 3869 | |
25dbc73a AM |
3870 | if (h->root.type == bfd_link_hash_warning) |
3871 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 3872 | |
25dbc73a AM |
3873 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) |
3874 | { | |
3875 | asection *s = p->sec->output_section; | |
ee05f2fe | 3876 | |
25dbc73a AM |
3877 | if (s != NULL |
3878 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
3879 | == (SEC_READONLY | SEC_ALLOC))) | |
3880 | { | |
3881 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
ee05f2fe | 3882 | |
25dbc73a AM |
3883 | /* Not an error, just cut short the traversal. */ |
3884 | return FALSE; | |
3885 | } | |
3886 | } | |
3887 | return TRUE; | |
3888 | } | |
3889 | ||
3890 | /* Set the sizes of the dynamic sections. */ | |
3891 | ||
3892 | static bfd_boolean | |
3893 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3894 | struct bfd_link_info *info) | |
3895 | { | |
3896 | struct ppc_elf_link_hash_table *htab; | |
3897 | asection *s; | |
3898 | bfd_boolean relocs; | |
3899 | bfd *ibfd; | |
7fce784e | 3900 | |
252b5132 | 3901 | #ifdef DEBUG |
25dbc73a | 3902 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 3903 | #endif |
252b5132 | 3904 | |
25dbc73a AM |
3905 | htab = ppc_elf_hash_table (info); |
3906 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 3907 | |
25dbc73a AM |
3908 | if (elf_hash_table (info)->dynamic_sections_created) |
3909 | { | |
3910 | /* Set the contents of the .interp section to the interpreter. */ | |
3911 | if (info->executable) | |
3912 | { | |
3913 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); | |
3914 | BFD_ASSERT (s != NULL); | |
3915 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3916 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3917 | } | |
3918 | } | |
252b5132 | 3919 | |
25dbc73a AM |
3920 | if (htab->tlsld_got.refcount > 0) |
3921 | { | |
3922 | htab->tlsld_got.offset = htab->got->size; | |
3923 | htab->got->size += 8; | |
3924 | if (info->shared) | |
3925 | htab->relgot->size += sizeof (Elf32_External_Rela); | |
3926 | } | |
3927 | else | |
3928 | htab->tlsld_got.offset = (bfd_vma) -1; | |
252b5132 | 3929 | |
25dbc73a AM |
3930 | /* Set up .got offsets for local syms, and space for local dynamic |
3931 | relocs. */ | |
3932 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
3933 | { | |
3934 | bfd_signed_vma *local_got; | |
3935 | bfd_signed_vma *end_local_got; | |
3936 | char *lgot_masks; | |
3937 | bfd_size_type locsymcount; | |
3938 | Elf_Internal_Shdr *symtab_hdr; | |
3939 | asection *srel; | |
7fce784e | 3940 | |
d2663f46 | 3941 | if (!is_ppc_elf_target (ibfd->xvec)) |
25dbc73a | 3942 | continue; |
7fce784e | 3943 | |
25dbc73a AM |
3944 | for (s = ibfd->sections; s != NULL; s = s->next) |
3945 | { | |
3946 | struct ppc_elf_dyn_relocs *p; | |
252b5132 | 3947 | |
25dbc73a AM |
3948 | for (p = ((struct ppc_elf_dyn_relocs *) |
3949 | elf_section_data (s)->local_dynrel); | |
3950 | p != NULL; | |
3951 | p = p->next) | |
3952 | { | |
3953 | if (!bfd_is_abs_section (p->sec) | |
3954 | && bfd_is_abs_section (p->sec->output_section)) | |
3955 | { | |
3956 | /* Input section has been discarded, either because | |
3957 | it is a copy of a linkonce section or due to | |
3958 | linker script /DISCARD/, so we'll be discarding | |
3959 | the relocs too. */ | |
7fce784e | 3960 | } |
25dbc73a | 3961 | else if (p->count != 0) |
7fce784e | 3962 | { |
25dbc73a AM |
3963 | elf_section_data (p->sec)->sreloc->size |
3964 | += p->count * sizeof (Elf32_External_Rela); | |
3965 | if ((p->sec->output_section->flags | |
3966 | & (SEC_READONLY | SEC_ALLOC)) | |
3967 | == (SEC_READONLY | SEC_ALLOC)) | |
3968 | info->flags |= DF_TEXTREL; | |
7fce784e | 3969 | } |
252b5132 | 3970 | } |
252b5132 | 3971 | } |
252b5132 | 3972 | |
25dbc73a AM |
3973 | local_got = elf_local_got_refcounts (ibfd); |
3974 | if (!local_got) | |
3975 | continue; | |
252b5132 | 3976 | |
25dbc73a AM |
3977 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
3978 | locsymcount = symtab_hdr->sh_info; | |
3979 | end_local_got = local_got + locsymcount; | |
3980 | lgot_masks = (char *) end_local_got; | |
3981 | s = htab->got; | |
3982 | srel = htab->relgot; | |
3983 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) | |
3984 | if (*local_got > 0) | |
3985 | { | |
3986 | if (*lgot_masks == (TLS_TLS | TLS_LD)) | |
3987 | { | |
3988 | /* If just an LD reloc, we'll just use | |
3989 | htab->tlsld_got.offset. */ | |
3990 | if (htab->tlsld_got.offset == (bfd_vma) -1) | |
3991 | { | |
3992 | htab->tlsld_got.offset = s->size; | |
3993 | s->size += 8; | |
3994 | if (info->shared) | |
3995 | srel->size += sizeof (Elf32_External_Rela); | |
3996 | } | |
3997 | *local_got = (bfd_vma) -1; | |
3998 | } | |
3999 | else | |
4000 | { | |
4001 | *local_got = s->size; | |
4002 | if ((*lgot_masks & TLS_TLS) != 0) | |
4003 | { | |
4004 | if ((*lgot_masks & TLS_GD) != 0) | |
4005 | s->size += 8; | |
4006 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
4007 | s->size += 4; | |
4008 | if ((*lgot_masks & TLS_DTPREL) != 0) | |
4009 | s->size += 4; | |
4010 | } | |
4011 | else | |
4012 | s->size += 4; | |
4013 | if (info->shared) | |
4014 | srel->size += ((s->size - *local_got) / 4 | |
4015 | * sizeof (Elf32_External_Rela)); | |
4016 | } | |
4017 | } | |
4018 | else | |
4019 | *local_got = (bfd_vma) -1; | |
4020 | } | |
252b5132 | 4021 | |
25dbc73a AM |
4022 | /* Allocate space for global sym dynamic relocs. */ |
4023 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
4024 | ||
4025 | /* We've now determined the sizes of the various dynamic sections. | |
4026 | Allocate memory for them. */ | |
4027 | relocs = FALSE; | |
4028 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 4029 | { |
25dbc73a AM |
4030 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
4031 | continue; | |
252b5132 | 4032 | |
25dbc73a | 4033 | if (s == htab->plt |
644285ef AM |
4034 | || s == htab->got |
4035 | || s == htab->sbss) | |
25dbc73a AM |
4036 | { |
4037 | /* Strip this section if we don't need it; see the | |
4038 | comment below. */ | |
4039 | } | |
c9a2f333 AM |
4040 | else if (s == htab->sdata[0].section |
4041 | || s == htab->sdata[1].section) | |
25dbc73a | 4042 | { |
c9a2f333 | 4043 | /* Strip these too. */ |
25dbc73a AM |
4044 | } |
4045 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
4046 | { | |
4047 | if (s->size == 0) | |
252b5132 | 4048 | { |
25dbc73a AM |
4049 | /* If we don't need this section, strip it from the |
4050 | output file. This is mostly to handle .rela.bss and | |
4051 | .rela.plt. We must create both sections in | |
4052 | create_dynamic_sections, because they must be created | |
4053 | before the linker maps input sections to output | |
4054 | sections. The linker does that before | |
4055 | adjust_dynamic_symbol is called, and it is that | |
4056 | function which decides whether anything needs to go | |
4057 | into these sections. */ | |
4058 | } | |
4059 | else | |
4060 | { | |
4061 | /* Remember whether there are any relocation sections. */ | |
4062 | relocs = TRUE; | |
252b5132 | 4063 | |
25dbc73a AM |
4064 | /* We use the reloc_count field as a counter if we need |
4065 | to copy relocs into the output file. */ | |
4066 | s->reloc_count = 0; | |
252b5132 RH |
4067 | } |
4068 | } | |
25dbc73a AM |
4069 | else |
4070 | { | |
4071 | /* It's not one of our sections, so don't allocate space. */ | |
4072 | continue; | |
4073 | } | |
252b5132 | 4074 | |
25dbc73a AM |
4075 | if (s->size == 0) |
4076 | { | |
4077 | _bfd_strip_section_from_output (info, s); | |
4078 | continue; | |
4079 | } | |
7fce784e | 4080 | |
644285ef AM |
4081 | if (s == htab->sbss) |
4082 | continue; | |
4083 | ||
25dbc73a AM |
4084 | /* Allocate memory for the section contents. */ |
4085 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
4086 | if (s->contents == NULL) | |
4087 | return FALSE; | |
4088 | } | |
252b5132 | 4089 | |
25dbc73a | 4090 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 4091 | { |
25dbc73a AM |
4092 | /* Add some entries to the .dynamic section. We fill in the |
4093 | values later, in ppc_elf_finish_dynamic_sections, but we | |
4094 | must add the entries now so that we get the correct size for | |
4095 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4096 | dynamic linker and used by the debugger. */ | |
4097 | #define add_dynamic_entry(TAG, VAL) \ | |
4098 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 4099 | |
25dbc73a | 4100 | if (info->executable) |
7619e7c7 | 4101 | { |
25dbc73a AM |
4102 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
4103 | return FALSE; | |
7619e7c7 AM |
4104 | } |
4105 | ||
25dbc73a | 4106 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 4107 | { |
25dbc73a AM |
4108 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
4109 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4110 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4111 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4112 | return FALSE; | |
4113 | } | |
7619e7c7 | 4114 | |
25dbc73a AM |
4115 | if (relocs) |
4116 | { | |
4117 | if (!add_dynamic_entry (DT_RELA, 0) | |
4118 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4119 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
4120 | return FALSE; | |
4121 | } | |
7619e7c7 | 4122 | |
25dbc73a AM |
4123 | /* If any dynamic relocs apply to a read-only section, then we |
4124 | need a DT_TEXTREL entry. */ | |
4125 | if ((info->flags & DF_TEXTREL) == 0) | |
4126 | elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, | |
4127 | info); | |
7619e7c7 | 4128 | |
25dbc73a AM |
4129 | if ((info->flags & DF_TEXTREL) != 0) |
4130 | { | |
4131 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
4132 | return FALSE; | |
7619e7c7 AM |
4133 | } |
4134 | } | |
25dbc73a AM |
4135 | #undef add_dynamic_entry |
4136 | ||
7619e7c7 AM |
4137 | return TRUE; |
4138 | } | |
25dbc73a AM |
4139 | \f |
4140 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
4141 | ||
4142 | static const int shared_stub_entry[] = | |
4143 | { | |
4144 | 0x7c0802a6, /* mflr 0 */ | |
4145 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
4146 | 0x7d6802a6, /* mflr 11 */ | |
4147 | 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */ | |
4148 | 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */ | |
4149 | 0x7c0803a6, /* mtlr 0 */ | |
4150 | 0x7d6903a6, /* mtctr 11 */ | |
4151 | 0x4e800420, /* bctr */ | |
4152 | }; | |
4153 | ||
4154 | static const int stub_entry[] = | |
4155 | { | |
4156 | 0x3d600000, /* lis 11,xxx@ha */ | |
4157 | 0x396b0000, /* addi 11,11,xxx@l */ | |
4158 | 0x7d6903a6, /* mtctr 11 */ | |
4159 | 0x4e800420, /* bctr */ | |
4160 | }; | |
4161 | ||
4162 | static bfd_boolean | |
4163 | ppc_elf_relax_section (bfd *abfd, | |
4164 | asection *isec, | |
4165 | struct bfd_link_info *link_info, | |
4166 | bfd_boolean *again) | |
4167 | { | |
4168 | struct one_fixup | |
4169 | { | |
4170 | struct one_fixup *next; | |
4171 | asection *tsec; | |
4172 | bfd_vma toff; | |
4173 | bfd_vma trampoff; | |
4174 | }; | |
7619e7c7 | 4175 | |
25dbc73a AM |
4176 | Elf_Internal_Shdr *symtab_hdr; |
4177 | bfd_byte *contents = NULL; | |
4178 | Elf_Internal_Sym *isymbuf = NULL; | |
4179 | Elf_Internal_Rela *internal_relocs = NULL; | |
4180 | Elf_Internal_Rela *irel, *irelend; | |
4181 | struct one_fixup *fixups = NULL; | |
4182 | bfd_boolean changed; | |
4183 | struct ppc_elf_link_hash_table *ppc_info; | |
4184 | bfd_size_type trampoff; | |
7619e7c7 | 4185 | |
25dbc73a | 4186 | *again = FALSE; |
7619e7c7 | 4187 | |
25dbc73a AM |
4188 | /* Nothing to do if there are no relocations. */ |
4189 | if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0) | |
4190 | return TRUE; | |
7619e7c7 | 4191 | |
25dbc73a AM |
4192 | trampoff = (isec->size + 3) & (bfd_vma) -4; |
4193 | /* Space for a branch around any trampolines. */ | |
4194 | trampoff += 4; | |
7619e7c7 | 4195 | |
25dbc73a | 4196 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
7619e7c7 | 4197 | |
25dbc73a AM |
4198 | /* Get a copy of the native relocations. */ |
4199 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, | |
4200 | link_info->keep_memory); | |
4201 | if (internal_relocs == NULL) | |
4202 | goto error_return; | |
7619e7c7 | 4203 | |
25dbc73a AM |
4204 | ppc_info = ppc_elf_hash_table (link_info); |
4205 | irelend = internal_relocs + isec->reloc_count; | |
7619e7c7 | 4206 | |
25dbc73a | 4207 | for (irel = internal_relocs; irel < irelend; irel++) |
7619e7c7 | 4208 | { |
25dbc73a AM |
4209 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
4210 | bfd_vma symaddr, reladdr, toff, roff; | |
4211 | asection *tsec; | |
4212 | struct one_fixup *f; | |
4213 | size_t insn_offset = 0; | |
4214 | bfd_vma max_branch_offset, val; | |
4215 | bfd_byte *hit_addr; | |
4216 | unsigned long t0; | |
4217 | unsigned char sym_type; | |
7619e7c7 | 4218 | |
25dbc73a AM |
4219 | switch (r_type) |
4220 | { | |
4221 | case R_PPC_REL24: | |
4222 | case R_PPC_LOCAL24PC: | |
4223 | case R_PPC_PLTREL24: | |
4224 | max_branch_offset = 1 << 25; | |
4225 | break; | |
7619e7c7 | 4226 | |
25dbc73a AM |
4227 | case R_PPC_REL14: |
4228 | case R_PPC_REL14_BRTAKEN: | |
4229 | case R_PPC_REL14_BRNTAKEN: | |
4230 | max_branch_offset = 1 << 15; | |
4231 | break; | |
7619e7c7 | 4232 | |
25dbc73a AM |
4233 | default: |
4234 | continue; | |
4235 | } | |
7619e7c7 | 4236 | |
25dbc73a AM |
4237 | /* Get the value of the symbol referred to by the reloc. */ |
4238 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
4239 | { | |
4240 | /* A local symbol. */ | |
4241 | Elf_Internal_Sym *isym; | |
7fce784e | 4242 | |
25dbc73a AM |
4243 | /* Read this BFD's local symbols. */ |
4244 | if (isymbuf == NULL) | |
4245 | { | |
4246 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4247 | if (isymbuf == NULL) | |
4248 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
4249 | symtab_hdr->sh_info, 0, | |
4250 | NULL, NULL, NULL); | |
4251 | if (isymbuf == 0) | |
4252 | goto error_return; | |
4253 | } | |
4254 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
4255 | if (isym->st_shndx == SHN_UNDEF) | |
4256 | continue; /* We can't do anything with undefined symbols. */ | |
4257 | else if (isym->st_shndx == SHN_ABS) | |
4258 | tsec = bfd_abs_section_ptr; | |
4259 | else if (isym->st_shndx == SHN_COMMON) | |
4260 | tsec = bfd_com_section_ptr; | |
4261 | else | |
4262 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7fce784e | 4263 | |
25dbc73a AM |
4264 | toff = isym->st_value; |
4265 | sym_type = ELF_ST_TYPE (isym->st_info); | |
4266 | } | |
4267 | else | |
4268 | { | |
4269 | /* Global symbol handling. */ | |
4270 | unsigned long indx; | |
4271 | struct elf_link_hash_entry *h; | |
7619e7c7 | 4272 | |
25dbc73a AM |
4273 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
4274 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 4275 | |
25dbc73a AM |
4276 | while (h->root.type == bfd_link_hash_indirect |
4277 | || h->root.type == bfd_link_hash_warning) | |
4278 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 4279 | |
25dbc73a AM |
4280 | if (r_type == R_PPC_PLTREL24 |
4281 | && ppc_info->plt != NULL | |
4282 | && h->plt.offset != (bfd_vma) -1) | |
4283 | { | |
4284 | tsec = ppc_info->plt; | |
4285 | toff = h->plt.offset; | |
4286 | } | |
4287 | else if (h->root.type == bfd_link_hash_defined | |
4288 | || h->root.type == bfd_link_hash_defweak) | |
4289 | { | |
4290 | tsec = h->root.u.def.section; | |
4291 | toff = h->root.u.def.value; | |
4292 | } | |
4293 | else | |
4294 | continue; | |
7619e7c7 | 4295 | |
25dbc73a AM |
4296 | sym_type = h->type; |
4297 | } | |
7619e7c7 | 4298 | |
25dbc73a AM |
4299 | /* If the branch and target are in the same section, you have |
4300 | no hope of adding stubs. We'll error out later should the | |
4301 | branch overflow. */ | |
4302 | if (tsec == isec) | |
4303 | continue; | |
4304 | ||
4305 | /* There probably isn't any reason to handle symbols in | |
4306 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
4307 | attribute for a code section, and we are only looking at | |
4308 | branches. However, implement it correctly here as a | |
4309 | reference for other target relax_section functions. */ | |
4310 | if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
4311 | { | |
4312 | /* At this stage in linking, no SEC_MERGE symbol has been | |
4313 | adjusted, so all references to such symbols need to be | |
4314 | passed through _bfd_merged_section_offset. (Later, in | |
4315 | relocate_section, all SEC_MERGE symbols *except* for | |
4316 | section symbols have been adjusted.) | |
4317 | ||
4318 | gas may reduce relocations against symbols in SEC_MERGE | |
4319 | sections to a relocation against the section symbol when | |
4320 | the original addend was zero. When the reloc is against | |
4321 | a section symbol we should include the addend in the | |
4322 | offset passed to _bfd_merged_section_offset, since the | |
4323 | location of interest is the original symbol. On the | |
4324 | other hand, an access to "sym+addend" where "sym" is not | |
4325 | a section symbol should not include the addend; Such an | |
4326 | access is presumed to be an offset from "sym"; The | |
4327 | location of interest is just "sym". */ | |
4328 | if (sym_type == STT_SECTION) | |
4329 | toff += irel->r_addend; | |
7619e7c7 | 4330 | |
25dbc73a AM |
4331 | toff = _bfd_merged_section_offset (abfd, &tsec, |
4332 | elf_section_data (tsec)->sec_info, | |
4333 | toff); | |
7619e7c7 | 4334 | |
25dbc73a AM |
4335 | if (sym_type != STT_SECTION) |
4336 | toff += irel->r_addend; | |
4337 | } | |
4338 | else | |
4339 | toff += irel->r_addend; | |
7619e7c7 | 4340 | |
25dbc73a | 4341 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7619e7c7 | 4342 | |
25dbc73a AM |
4343 | roff = irel->r_offset; |
4344 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7619e7c7 | 4345 | |
25dbc73a AM |
4346 | /* If the branch is in range, no need to do anything. */ |
4347 | if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) | |
4348 | continue; | |
252b5132 | 4349 | |
25dbc73a AM |
4350 | /* Look for an existing fixup to this address. */ |
4351 | for (f = fixups; f ; f = f->next) | |
4352 | if (f->tsec == tsec && f->toff == toff) | |
4353 | break; | |
4354 | ||
4355 | if (f == NULL) | |
7619e7c7 | 4356 | { |
25dbc73a AM |
4357 | size_t size; |
4358 | unsigned long stub_rtype; | |
252b5132 | 4359 | |
25dbc73a AM |
4360 | val = trampoff - roff; |
4361 | if (val >= max_branch_offset) | |
4362 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
4363 | one. We'll report an error later. */ | |
4364 | continue; | |
252b5132 | 4365 | |
25dbc73a AM |
4366 | if (link_info->shared) |
4367 | { | |
4368 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
4369 | insn_offset = 12; | |
4370 | stub_rtype = R_PPC_RELAX32PC; | |
4371 | } | |
4372 | else | |
4373 | { | |
4374 | size = 4 * ARRAY_SIZE (stub_entry); | |
4375 | insn_offset = 0; | |
4376 | stub_rtype = R_PPC_RELAX32; | |
4377 | } | |
dc810e39 | 4378 | |
25dbc73a AM |
4379 | if (R_PPC_RELAX32_PLT - R_PPC_RELAX32 |
4380 | != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC) | |
4381 | abort (); | |
4382 | if (tsec == ppc_info->plt) | |
4383 | stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32; | |
252b5132 | 4384 | |
25dbc73a AM |
4385 | /* Hijack the old relocation. Since we need two |
4386 | relocations for this use a "composite" reloc. */ | |
4387 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
4388 | stub_rtype); | |
4389 | irel->r_offset = trampoff + insn_offset; | |
252b5132 | 4390 | |
25dbc73a AM |
4391 | /* Record the fixup so we don't do it again this section. */ |
4392 | f = bfd_malloc (sizeof (*f)); | |
4393 | f->next = fixups; | |
4394 | f->tsec = tsec; | |
4395 | f->toff = toff; | |
4396 | f->trampoff = trampoff; | |
4397 | fixups = f; | |
252b5132 | 4398 | |
25dbc73a AM |
4399 | trampoff += size; |
4400 | } | |
4401 | else | |
4402 | { | |
4403 | val = f->trampoff - roff; | |
4404 | if (val >= max_branch_offset) | |
4405 | continue; | |
252b5132 | 4406 | |
25dbc73a AM |
4407 | /* Nop out the reloc, since we're finalizing things here. */ |
4408 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
4409 | } | |
252b5132 | 4410 | |
25dbc73a AM |
4411 | /* Get the section contents. */ |
4412 | if (contents == NULL) | |
4413 | { | |
4414 | /* Get cached copy if it exists. */ | |
4415 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
4416 | contents = elf_section_data (isec)->this_hdr.contents; | |
4417 | else | |
4418 | { | |
4419 | /* Go get them off disk. */ | |
4420 | if (!bfd_malloc_and_get_section (abfd, isec, &contents)) | |
4421 | goto error_return; | |
4422 | } | |
4423 | } | |
252b5132 | 4424 | |
25dbc73a AM |
4425 | /* Fix up the existing branch to hit the trampoline. */ |
4426 | hit_addr = contents + roff; | |
4427 | switch (r_type) | |
4428 | { | |
4429 | case R_PPC_REL24: | |
4430 | case R_PPC_LOCAL24PC: | |
4431 | case R_PPC_PLTREL24: | |
4432 | t0 = bfd_get_32 (abfd, hit_addr); | |
4433 | t0 &= ~0x3fffffc; | |
4434 | t0 |= val & 0x3fffffc; | |
4435 | bfd_put_32 (abfd, t0, hit_addr); | |
4436 | break; | |
252b5132 | 4437 | |
25dbc73a AM |
4438 | case R_PPC_REL14: |
4439 | case R_PPC_REL14_BRTAKEN: | |
4440 | case R_PPC_REL14_BRNTAKEN: | |
4441 | t0 = bfd_get_32 (abfd, hit_addr); | |
4442 | t0 &= ~0xfffc; | |
4443 | t0 |= val & 0xfffc; | |
4444 | bfd_put_32 (abfd, t0, hit_addr); | |
4445 | break; | |
4446 | } | |
4447 | } | |
252b5132 | 4448 | |
25dbc73a AM |
4449 | /* Write out the trampolines. */ |
4450 | changed = fixups != NULL; | |
4451 | if (fixups != NULL) | |
4452 | { | |
4453 | const int *stub; | |
4454 | bfd_byte *dest; | |
4455 | bfd_vma val; | |
4456 | int i, size; | |
252b5132 | 4457 | |
25dbc73a AM |
4458 | do |
4459 | { | |
4460 | struct one_fixup *f = fixups; | |
4461 | fixups = fixups->next; | |
4462 | free (f); | |
4463 | } | |
4464 | while (fixups); | |
252b5132 | 4465 | |
25dbc73a AM |
4466 | contents = bfd_realloc (contents, trampoff); |
4467 | if (contents == NULL) | |
4468 | goto error_return; | |
252b5132 | 4469 | |
25dbc73a AM |
4470 | isec->size = (isec->size + 3) & (bfd_vma) -4; |
4471 | /* Branch around the trampolines. */ | |
4472 | val = trampoff - isec->size + 0x48000000; | |
4473 | dest = contents + isec->size; | |
4474 | isec->size = trampoff; | |
4475 | bfd_put_32 (abfd, val, dest); | |
4476 | dest += 4; | |
252b5132 | 4477 | |
25dbc73a AM |
4478 | if (link_info->shared) |
4479 | { | |
4480 | stub = shared_stub_entry; | |
4481 | size = ARRAY_SIZE (shared_stub_entry); | |
4482 | } | |
4483 | else | |
4484 | { | |
4485 | stub = stub_entry; | |
4486 | size = ARRAY_SIZE (stub_entry); | |
4487 | } | |
252b5132 | 4488 | |
25dbc73a AM |
4489 | i = 0; |
4490 | while (dest < contents + trampoff) | |
252b5132 | 4491 | { |
25dbc73a AM |
4492 | bfd_put_32 (abfd, stub[i], dest); |
4493 | i++; | |
4494 | if (i == size) | |
4495 | i = 0; | |
4496 | dest += 4; | |
252b5132 | 4497 | } |
25dbc73a | 4498 | BFD_ASSERT (i == 0); |
252b5132 RH |
4499 | } |
4500 | ||
25dbc73a AM |
4501 | if (isymbuf != NULL |
4502 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 4503 | { |
25dbc73a AM |
4504 | if (! link_info->keep_memory) |
4505 | free (isymbuf); | |
252b5132 | 4506 | else |
25dbc73a AM |
4507 | { |
4508 | /* Cache the symbols for elf_link_input_bfd. */ | |
4509 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
4510 | } | |
252b5132 RH |
4511 | } |
4512 | ||
25dbc73a AM |
4513 | if (contents != NULL |
4514 | && elf_section_data (isec)->this_hdr.contents != contents) | |
4515 | { | |
4516 | if (!changed && !link_info->keep_memory) | |
4517 | free (contents); | |
4518 | else | |
4519 | { | |
4520 | /* Cache the section contents for elf_link_input_bfd. */ | |
4521 | elf_section_data (isec)->this_hdr.contents = contents; | |
4522 | } | |
4523 | } | |
252b5132 | 4524 | |
25dbc73a AM |
4525 | if (elf_section_data (isec)->relocs != internal_relocs) |
4526 | { | |
4527 | if (!changed) | |
4528 | free (internal_relocs); | |
4529 | else | |
4530 | elf_section_data (isec)->relocs = internal_relocs; | |
4531 | } | |
252b5132 | 4532 | |
25dbc73a | 4533 | *again = changed; |
b34976b6 | 4534 | return TRUE; |
25dbc73a AM |
4535 | |
4536 | error_return: | |
4537 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
4538 | free (isymbuf); | |
4539 | if (contents != NULL | |
4540 | && elf_section_data (isec)->this_hdr.contents != contents) | |
4541 | free (contents); | |
4542 | if (internal_relocs != NULL | |
4543 | && elf_section_data (isec)->relocs != internal_relocs) | |
4544 | free (internal_relocs); | |
4545 | return FALSE; | |
252b5132 | 4546 | } |
252b5132 | 4547 | \f |
f85f57ad AM |
4548 | /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are |
4549 | set here rather than via PROVIDE in the default linker script, | |
4550 | because using PROVIDE inside an output section statement results in | |
4551 | unnecessary output sections. Using PROVIDE outside an output section | |
4552 | statement runs the risk of section alignment affecting where the | |
4553 | section starts. */ | |
c9a2f333 AM |
4554 | |
4555 | bfd_boolean | |
4556 | ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info) | |
4557 | { | |
4558 | struct ppc_elf_link_hash_table *htab; | |
4559 | unsigned i; | |
f85f57ad AM |
4560 | asection *s; |
4561 | bfd_vma val; | |
c9a2f333 AM |
4562 | |
4563 | htab = ppc_elf_hash_table (info); | |
4564 | ||
4565 | for (i = 0; i < 2; i++) | |
4566 | { | |
4567 | elf_linker_section_t *lsect = &htab->sdata[i]; | |
c9a2f333 AM |
4568 | |
4569 | s = lsect->section; | |
4570 | if (s != NULL) | |
4571 | s = s->output_section; | |
4572 | if (s == NULL) | |
4573 | s = bfd_get_section_by_name (obfd, lsect->name); | |
4574 | if (s == NULL) | |
4575 | s = bfd_get_section_by_name (obfd, lsect->bss_name); | |
4576 | ||
4577 | val = 0; | |
4578 | if (s != NULL) | |
4579 | val = s->vma + 32768; | |
4580 | lsect->sym_val = val; | |
4581 | ||
81e1b023 | 4582 | _bfd_elf_provide_symbol (info, lsect->sym_name, val); |
c9a2f333 | 4583 | } |
f85f57ad AM |
4584 | |
4585 | s = bfd_get_section_by_name (obfd, ".sbss"); | |
4586 | val = 0; | |
4587 | if (s != NULL) | |
4588 | val = s->vma; | |
81e1b023 L |
4589 | _bfd_elf_provide_symbol (info, "__sbss_start", val); |
4590 | _bfd_elf_provide_symbol (info, "___sbss_start", val); | |
f85f57ad AM |
4591 | if (s != NULL) |
4592 | val += s->size; | |
81e1b023 L |
4593 | _bfd_elf_provide_symbol (info, "__sbss_end", val); |
4594 | _bfd_elf_provide_symbol (info, "___sbss_end", val); | |
c9a2f333 AM |
4595 | return TRUE; |
4596 | } | |
4597 | \f | |
25dbc73a | 4598 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 4599 | |
25dbc73a | 4600 | static bfd_vma |
76750a2f | 4601 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
4602 | elf_linker_section_t *lsect, |
4603 | struct elf_link_hash_entry *h, | |
4604 | bfd_vma relocation, | |
2bb04cf2 | 4605 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
4606 | { |
4607 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 4608 | |
25dbc73a | 4609 | BFD_ASSERT (lsect != NULL); |
252b5132 | 4610 | |
25dbc73a | 4611 | if (h != NULL) |
252b5132 | 4612 | { |
25dbc73a AM |
4613 | /* Handle global symbol. */ |
4614 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 4615 | |
25dbc73a | 4616 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
4617 | BFD_ASSERT (eh->elf.def_regular); |
4618 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
4619 | } |
4620 | else | |
4621 | { | |
4622 | /* Handle local symbol. */ | |
4623 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 4624 | |
25dbc73a | 4625 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
4626 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
4627 | } | |
252b5132 | 4628 | |
76750a2f AM |
4629 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
4630 | rel->r_addend, | |
4631 | lsect); | |
4632 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 4633 | |
76750a2f AM |
4634 | /* Offset will always be a multiple of four, so use the bottom bit |
4635 | as a "written" flag. */ | |
4636 | if ((linker_section_ptr->offset & 1) == 0) | |
4637 | { | |
4638 | bfd_put_32 (lsect->section->owner, | |
4639 | relocation + linker_section_ptr->addend, | |
4640 | lsect->section->contents + linker_section_ptr->offset); | |
4641 | linker_section_ptr->offset += 1; | |
252b5132 RH |
4642 | } |
4643 | ||
25dbc73a | 4644 | relocation = (lsect->section->output_offset |
76750a2f | 4645 | + linker_section_ptr->offset - 1 |
c9a2f333 | 4646 | - 0x8000); |
252b5132 | 4647 | |
25dbc73a AM |
4648 | #ifdef DEBUG |
4649 | fprintf (stderr, | |
4650 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
4651 | lsect->name, (long) relocation, (long) relocation); | |
4652 | #endif | |
252b5132 | 4653 | |
25dbc73a AM |
4654 | /* Subtract out the addend, because it will get added back in by the normal |
4655 | processing. */ | |
4656 | return relocation - linker_section_ptr->addend; | |
252b5132 | 4657 | } |
25dbc73a | 4658 | |
252b5132 RH |
4659 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
4660 | to handle the relocations for a section. | |
4661 | ||
4662 | The relocs are always passed as Rela structures; if the section | |
4663 | actually uses Rel structures, the r_addend field will always be | |
4664 | zero. | |
4665 | ||
4666 | This function is responsible for adjust the section contents as | |
4667 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 4668 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
4669 | necessary. |
4670 | ||
4671 | This function does not have to worry about setting the reloc | |
4672 | address or the reloc symbol index. | |
4673 | ||
4674 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
4675 | ||
4676 | LOCAL_SECTIONS is an array giving the section in the input file | |
4677 | corresponding to the st_shndx field of each local symbol. | |
4678 | ||
4679 | The global hash table entry for the global symbols can be found | |
4680 | via elf_sym_hashes (input_bfd). | |
4681 | ||
1049f94e | 4682 | When generating relocatable output, this function must handle |
252b5132 RH |
4683 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
4684 | going to be the section symbol corresponding to the output | |
4685 | section, which means that the addend must be adjusted | |
4686 | accordingly. */ | |
4687 | ||
b34976b6 | 4688 | static bfd_boolean |
55fd94b0 AM |
4689 | ppc_elf_relocate_section (bfd *output_bfd, |
4690 | struct bfd_link_info *info, | |
4691 | bfd *input_bfd, | |
4692 | asection *input_section, | |
4693 | bfd_byte *contents, | |
4694 | Elf_Internal_Rela *relocs, | |
4695 | Elf_Internal_Sym *local_syms, | |
4696 | asection **local_sections) | |
252b5132 | 4697 | { |
7619e7c7 AM |
4698 | Elf_Internal_Shdr *symtab_hdr; |
4699 | struct elf_link_hash_entry **sym_hashes; | |
4700 | struct ppc_elf_link_hash_table *htab; | |
4701 | Elf_Internal_Rela *rel; | |
4702 | Elf_Internal_Rela *relend; | |
4703 | Elf_Internal_Rela outrel; | |
4704 | bfd_byte *loc; | |
b34976b6 | 4705 | asection *sreloc = NULL; |
252b5132 | 4706 | bfd_vma *local_got_offsets; |
b34976b6 | 4707 | bfd_boolean ret = TRUE; |
b34976b6 | 4708 | |
252b5132 | 4709 | #ifdef DEBUG |
d003868e AM |
4710 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
4711 | "%ld relocations%s", | |
4712 | input_bfd, input_section, | |
4713 | (long) input_section->reloc_count, | |
4714 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
4715 | #endif |
4716 | ||
1049f94e | 4717 | if (info->relocatable) |
b34976b6 | 4718 | return TRUE; |
b491616a | 4719 | |
e47cd125 | 4720 | /* Initialize howto table if not already done. */ |
8da6118f | 4721 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
4722 | ppc_elf_howto_init (); |
4723 | ||
7619e7c7 | 4724 | htab = ppc_elf_hash_table (info); |
252b5132 | 4725 | local_got_offsets = elf_local_got_offsets (input_bfd); |
7619e7c7 AM |
4726 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
4727 | sym_hashes = elf_sym_hashes (input_bfd); | |
4728 | rel = relocs; | |
4729 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
4730 | for (; rel < relend; rel++) |
4731 | { | |
7619e7c7 AM |
4732 | enum elf_ppc_reloc_type r_type; |
4733 | bfd_vma addend; | |
4734 | bfd_reloc_status_type r; | |
4735 | Elf_Internal_Sym *sym; | |
4736 | asection *sec; | |
4737 | struct elf_link_hash_entry *h; | |
4738 | const char *sym_name; | |
252b5132 RH |
4739 | reloc_howto_type *howto; |
4740 | unsigned long r_symndx; | |
4741 | bfd_vma relocation; | |
7619e7c7 | 4742 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
4743 | bfd_boolean unresolved_reloc; |
4744 | bfd_boolean warned; | |
4745 | unsigned int tls_type, tls_mask, tls_gd; | |
4746 | ||
55fd94b0 AM |
4747 | r_type = ELF32_R_TYPE (rel->r_info); |
4748 | sym = NULL; | |
4749 | sec = NULL; | |
4750 | h = NULL; | |
7619e7c7 AM |
4751 | unresolved_reloc = FALSE; |
4752 | warned = FALSE; | |
252b5132 | 4753 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 4754 | |
252b5132 RH |
4755 | if (r_symndx < symtab_hdr->sh_info) |
4756 | { | |
4757 | sym = local_syms + r_symndx; | |
4758 | sec = local_sections[r_symndx]; | |
be8dd2ca | 4759 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym); |
252b5132 | 4760 | |
8517fae7 | 4761 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
4762 | } |
4763 | else | |
4764 | { | |
b2a8e766 AM |
4765 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
4766 | r_symndx, symtab_hdr, sym_hashes, | |
4767 | h, sec, relocation, | |
4768 | unresolved_reloc, warned); | |
9abc968f | 4769 | |
252b5132 | 4770 | sym_name = h->root.root.string; |
7619e7c7 AM |
4771 | } |
4772 | ||
4773 | /* TLS optimizations. Replace instruction sequences and relocs | |
4774 | based on information we collected in tls_optimize. We edit | |
4775 | RELOCS so that --emit-relocs will output something sensible | |
4776 | for the final instruction stream. */ | |
4777 | tls_mask = 0; | |
4778 | tls_gd = 0; | |
4779 | if (IS_PPC_TLS_RELOC (r_type)) | |
4780 | { | |
4781 | if (h != NULL) | |
4782 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
4783 | else if (local_got_offsets != NULL) | |
4784 | { | |
4785 | char *lgot_masks; | |
4786 | lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
4787 | tls_mask = lgot_masks[r_symndx]; | |
4788 | } | |
4789 | } | |
4790 | ||
4791 | /* Ensure reloc mapping code below stays sane. */ | |
4792 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
4793 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
4794 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
4795 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
4796 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
4797 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
4798 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
4799 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
4800 | abort (); | |
4801 | switch (r_type) | |
4802 | { | |
4803 | default: | |
4804 | break; | |
4805 | ||
4806 | case R_PPC_GOT_TPREL16: | |
4807 | case R_PPC_GOT_TPREL16_LO: | |
4808 | if (tls_mask != 0 | |
4809 | && (tls_mask & TLS_TPREL) == 0) | |
4810 | { | |
4811 | bfd_vma insn; | |
4812 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); | |
4813 | insn &= 31 << 21; | |
4814 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4815 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
4816 | r_type = R_PPC_TPREL16_HA; | |
4817 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4818 | } | |
4819 | break; | |
4820 | ||
4821 | case R_PPC_TLS: | |
4822 | if (tls_mask != 0 | |
4823 | && (tls_mask & TLS_TPREL) == 0) | |
4824 | { | |
4825 | bfd_vma insn, rtra; | |
4826 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
4827 | if ((insn & ((31 << 26) | (31 << 11))) | |
4828 | == ((31 << 26) | (2 << 11))) | |
4829 | rtra = insn & ((1 << 26) - (1 << 16)); | |
4830 | else if ((insn & ((31 << 26) | (31 << 16))) | |
4831 | == ((31 << 26) | (2 << 16))) | |
4832 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
4833 | else | |
4834 | abort (); | |
4835 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
4836 | /* add -> addi. */ | |
4837 | insn = 14 << 26; | |
4838 | else if ((insn & (31 << 1)) == 23 << 1 | |
4839 | && ((insn & (31 << 6)) < 14 << 6 | |
4840 | || ((insn & (31 << 6)) >= 16 << 6 | |
4841 | && (insn & (31 << 6)) < 24 << 6))) | |
4842 | /* load and store indexed -> dform. */ | |
4843 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
4844 | else if ((insn & (31 << 1)) == 21 << 1 | |
4845 | && (insn & (0x1a << 6)) == 0) | |
4846 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
4847 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
4848 | | ((insn >> 6) & 1)); | |
4849 | else if ((insn & (31 << 1)) == 21 << 1 | |
4850 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
4851 | /* lwax -> lwa. */ | |
4852 | insn = (58 << 26) | 2; | |
4853 | else | |
4854 | abort (); | |
4855 | insn |= rtra; | |
4856 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
4857 | r_type = R_PPC_TPREL16_LO; | |
4858 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4859 | /* Was PPC_TLS which sits on insn boundary, now | |
4860 | PPC_TPREL16_LO which is at insn+2. */ | |
4861 | rel->r_offset += 2; | |
4862 | } | |
4863 | break; | |
4864 | ||
4865 | case R_PPC_GOT_TLSGD16_HI: | |
4866 | case R_PPC_GOT_TLSGD16_HA: | |
4867 | tls_gd = TLS_TPRELGD; | |
4868 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
4869 | goto tls_gdld_hi; | |
4870 | break; | |
4871 | ||
4872 | case R_PPC_GOT_TLSLD16_HI: | |
4873 | case R_PPC_GOT_TLSLD16_HA: | |
4874 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
4875 | { | |
4876 | tls_gdld_hi: | |
4877 | if ((tls_mask & tls_gd) != 0) | |
4878 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
4879 | + R_PPC_GOT_TPREL16); | |
4880 | else | |
4881 | { | |
4882 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
4883 | rel->r_offset -= 2; | |
4884 | r_type = R_PPC_NONE; | |
4885 | } | |
4886 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4887 | } | |
4888 | break; | |
4889 | ||
4890 | case R_PPC_GOT_TLSGD16: | |
4891 | case R_PPC_GOT_TLSGD16_LO: | |
4892 | tls_gd = TLS_TPRELGD; | |
4893 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
4894 | goto tls_get_addr_check; | |
4895 | break; | |
4896 | ||
4897 | case R_PPC_GOT_TLSLD16: | |
4898 | case R_PPC_GOT_TLSLD16_LO: | |
4899 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
4900 | { | |
4901 | tls_get_addr_check: | |
4902 | if (rel + 1 < relend) | |
4903 | { | |
4904 | enum elf_ppc_reloc_type r_type2; | |
4905 | unsigned long r_symndx2; | |
4906 | struct elf_link_hash_entry *h2; | |
87d243f1 | 4907 | bfd_vma insn1, insn2; |
7619e7c7 AM |
4908 | bfd_vma offset; |
4909 | ||
4910 | /* The next instruction should be a call to | |
4911 | __tls_get_addr. Peek at the reloc to be sure. */ | |
55fd94b0 | 4912 | r_type2 = ELF32_R_TYPE (rel[1].r_info); |
7619e7c7 AM |
4913 | r_symndx2 = ELF32_R_SYM (rel[1].r_info); |
4914 | if (r_symndx2 < symtab_hdr->sh_info | |
4915 | || (r_type2 != R_PPC_REL14 | |
4916 | && r_type2 != R_PPC_REL14_BRTAKEN | |
4917 | && r_type2 != R_PPC_REL14_BRNTAKEN | |
4918 | && r_type2 != R_PPC_REL24 | |
4919 | && r_type2 != R_PPC_PLTREL24)) | |
4920 | break; | |
4921 | ||
4922 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
4923 | while (h2->root.type == bfd_link_hash_indirect | |
4924 | || h2->root.type == bfd_link_hash_warning) | |
4925 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
4926 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
4927 | break; | |
4928 | ||
4929 | /* OK, it checks out. Replace the call. */ | |
4930 | offset = rel[1].r_offset; | |
4931 | insn1 = bfd_get_32 (output_bfd, | |
4932 | contents + rel->r_offset - 2); | |
7619e7c7 AM |
4933 | if ((tls_mask & tls_gd) != 0) |
4934 | { | |
4935 | /* IE */ | |
4936 | insn1 &= (1 << 26) - 1; | |
4937 | insn1 |= 32 << 26; /* lwz */ | |
4938 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
4939 | rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); | |
4940 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
4941 | + R_PPC_GOT_TPREL16); | |
4942 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4943 | } | |
4944 | else | |
4945 | { | |
4946 | /* LE */ | |
4947 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
4948 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
4949 | if (tls_gd == 0) | |
4950 | { | |
4951 | /* Was an LD reloc. */ | |
4952 | r_symndx = 0; | |
e1918d23 AM |
4953 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
4954 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
4955 | } |
4956 | r_type = R_PPC_TPREL16_HA; | |
4957 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4958 | rel[1].r_info = ELF32_R_INFO (r_symndx, | |
4959 | R_PPC_TPREL16_LO); | |
4960 | rel[1].r_offset += 2; | |
4961 | } | |
7619e7c7 AM |
4962 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); |
4963 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7619e7c7 AM |
4964 | if (tls_gd == 0) |
4965 | { | |
4966 | /* We changed the symbol on an LD reloc. Start over | |
70bccea4 | 4967 | in order to get h, sym, sec etc. right. */ |
7619e7c7 AM |
4968 | rel--; |
4969 | continue; | |
4970 | } | |
4971 | } | |
252b5132 | 4972 | } |
7619e7c7 AM |
4973 | break; |
4974 | } | |
4975 | ||
4976 | /* Handle other relocations that tweak non-addend part of insn. */ | |
4977 | branch_bit = 0; | |
4978 | switch (r_type) | |
4979 | { | |
4980 | default: | |
4981 | break; | |
4982 | ||
4983 | /* Branch taken prediction relocations. */ | |
4984 | case R_PPC_ADDR14_BRTAKEN: | |
4985 | case R_PPC_REL14_BRTAKEN: | |
4986 | branch_bit = BRANCH_PREDICT_BIT; | |
4987 | /* Fall thru */ | |
4988 | ||
4cc11e76 | 4989 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
4990 | case R_PPC_ADDR14_BRNTAKEN: |
4991 | case R_PPC_REL14_BRNTAKEN: | |
4992 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
4993 | insn &= ~BRANCH_PREDICT_BIT; | |
4994 | insn |= branch_bit; | |
4995 | ||
4996 | from = (rel->r_offset | |
4997 | + input_section->output_offset | |
4998 | + input_section->output_section->vma); | |
4999 | ||
5000 | /* Invert 'y' bit if not the default. */ | |
5001 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
5002 | insn ^= BRANCH_PREDICT_BIT; | |
5003 | ||
5004 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5005 | break; | |
252b5132 RH |
5006 | } |
5007 | ||
7619e7c7 AM |
5008 | addend = rel->r_addend; |
5009 | tls_type = 0; | |
5010 | howto = NULL; | |
55fd94b0 AM |
5011 | if (r_type < R_PPC_max) |
5012 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 5013 | switch (r_type) |
252b5132 RH |
5014 | { |
5015 | default: | |
7619e7c7 | 5016 | (*_bfd_error_handler) |
d003868e AM |
5017 | (_("%B: unknown relocation type %d for symbol %s"), |
5018 | input_bfd, (int) r_type, sym_name); | |
252b5132 RH |
5019 | |
5020 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5021 | ret = FALSE; |
252b5132 RH |
5022 | continue; |
5023 | ||
7619e7c7 AM |
5024 | case R_PPC_NONE: |
5025 | case R_PPC_TLS: | |
5026 | case R_PPC_EMB_MRKREF: | |
5027 | case R_PPC_GNU_VTINHERIT: | |
5028 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
5029 | continue; |
5030 | ||
7619e7c7 AM |
5031 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
5032 | address in the GOT as relocation value instead of the | |
5033 | symbol's value itself. Also, create a GOT entry for the | |
5034 | symbol and put the symbol value there. */ | |
5035 | case R_PPC_GOT_TLSGD16: | |
5036 | case R_PPC_GOT_TLSGD16_LO: | |
5037 | case R_PPC_GOT_TLSGD16_HI: | |
5038 | case R_PPC_GOT_TLSGD16_HA: | |
5039 | tls_type = TLS_TLS | TLS_GD; | |
5040 | goto dogot; | |
5041 | ||
5042 | case R_PPC_GOT_TLSLD16: | |
5043 | case R_PPC_GOT_TLSLD16_LO: | |
5044 | case R_PPC_GOT_TLSLD16_HI: | |
5045 | case R_PPC_GOT_TLSLD16_HA: | |
5046 | tls_type = TLS_TLS | TLS_LD; | |
5047 | goto dogot; | |
5048 | ||
5049 | case R_PPC_GOT_TPREL16: | |
5050 | case R_PPC_GOT_TPREL16_LO: | |
5051 | case R_PPC_GOT_TPREL16_HI: | |
5052 | case R_PPC_GOT_TPREL16_HA: | |
5053 | tls_type = TLS_TLS | TLS_TPREL; | |
5054 | goto dogot; | |
5055 | ||
5056 | case R_PPC_GOT_DTPREL16: | |
5057 | case R_PPC_GOT_DTPREL16_LO: | |
5058 | case R_PPC_GOT_DTPREL16_HI: | |
5059 | case R_PPC_GOT_DTPREL16_HA: | |
5060 | tls_type = TLS_TLS | TLS_DTPREL; | |
5061 | goto dogot; | |
5062 | ||
5063 | case R_PPC_GOT16: | |
5064 | case R_PPC_GOT16_LO: | |
5065 | case R_PPC_GOT16_HI: | |
5066 | case R_PPC_GOT16_HA: | |
5067 | dogot: | |
5068 | { | |
5069 | /* Relocation is to the entry for this symbol in the global | |
5070 | offset table. */ | |
5071 | bfd_vma off; | |
5072 | bfd_vma *offp; | |
5073 | unsigned long indx; | |
5074 | ||
5075 | if (htab->got == NULL) | |
5076 | abort (); | |
5077 | ||
5078 | indx = 0; | |
5079 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 5080 | && (h == NULL |
f5385ebf | 5081 | || !h->def_dynamic)) |
7619e7c7 AM |
5082 | offp = &htab->tlsld_got.offset; |
5083 | else if (h != NULL) | |
5084 | { | |
5085 | bfd_boolean dyn; | |
5086 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 5087 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
5088 | || (info->shared |
5089 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
5090 | /* This is actually a static link, or it is a | |
5091 | -Bsymbolic link and the symbol is defined | |
5092 | locally, or the symbol was forced to be local | |
5093 | because of a version file. */ | |
5094 | ; | |
5095 | else | |
5096 | { | |
5097 | indx = h->dynindx; | |
5098 | unresolved_reloc = FALSE; | |
5099 | } | |
5100 | offp = &h->got.offset; | |
5101 | } | |
5102 | else | |
5103 | { | |
5104 | if (local_got_offsets == NULL) | |
5105 | abort (); | |
5106 | offp = &local_got_offsets[r_symndx]; | |
5107 | } | |
5108 | ||
5109 | /* The offset must always be a multiple of 4. We use the | |
5110 | least significant bit to record whether we have already | |
5111 | processed this entry. */ | |
5112 | off = *offp; | |
5113 | if ((off & 1) != 0) | |
5114 | off &= ~1; | |
5115 | else | |
5116 | { | |
70bccea4 AM |
5117 | unsigned int tls_m = (tls_mask |
5118 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
5119 | | TLS_TPREL | TLS_TPRELGD)); | |
5120 | ||
5121 | if (offp == &htab->tlsld_got.offset) | |
5122 | tls_m = TLS_LD; | |
5123 | else if (h == NULL | |
f5385ebf | 5124 | || !h->def_dynamic) |
70bccea4 AM |
5125 | tls_m &= ~TLS_LD; |
5126 | ||
5127 | /* We might have multiple got entries for this sym. | |
5128 | Initialize them all. */ | |
5129 | do | |
7619e7c7 | 5130 | { |
70bccea4 AM |
5131 | int tls_ty = 0; |
5132 | ||
5133 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 5134 | { |
70bccea4 AM |
5135 | tls_ty = TLS_TLS | TLS_LD; |
5136 | tls_m &= ~TLS_LD; | |
5137 | } | |
5138 | else if ((tls_m & TLS_GD) != 0) | |
5139 | { | |
5140 | tls_ty = TLS_TLS | TLS_GD; | |
5141 | tls_m &= ~TLS_GD; | |
5142 | } | |
5143 | else if ((tls_m & TLS_DTPREL) != 0) | |
5144 | { | |
5145 | tls_ty = TLS_TLS | TLS_DTPREL; | |
5146 | tls_m &= ~TLS_DTPREL; | |
5147 | } | |
5148 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5149 | { | |
5150 | tls_ty = TLS_TLS | TLS_TPREL; | |
5151 | tls_m = 0; | |
7619e7c7 | 5152 | } |
7619e7c7 | 5153 | |
70bccea4 | 5154 | /* Generate relocs for the dynamic linker. */ |
4e795f50 AM |
5155 | if ((info->shared || indx != 0) |
5156 | && (h == NULL | |
5157 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5158 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 5159 | { |
70bccea4 AM |
5160 | outrel.r_offset = (htab->got->output_section->vma |
5161 | + htab->got->output_offset | |
5162 | + off); | |
e515b051 | 5163 | outrel.r_addend = 0; |
70bccea4 AM |
5164 | if (tls_ty & (TLS_LD | TLS_GD)) |
5165 | { | |
5166 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
5167 | if (tls_ty == (TLS_TLS | TLS_GD)) |
5168 | { | |
5169 | loc = htab->relgot->contents; | |
5170 | loc += (htab->relgot->reloc_count++ | |
5171 | * sizeof (Elf32_External_Rela)); | |
5172 | bfd_elf32_swap_reloca_out (output_bfd, | |
5173 | &outrel, loc); | |
e515b051 | 5174 | outrel.r_offset += 4; |
70bccea4 AM |
5175 | outrel.r_info |
5176 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
5177 | } |
5178 | } | |
5179 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
5180 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
5181 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
5182 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
5183 | else if (indx == 0) | |
5184 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); | |
5185 | else | |
5186 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); | |
70bccea4 | 5187 | if (indx == 0) |
e515b051 AM |
5188 | { |
5189 | outrel.r_addend += relocation; | |
5190 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 5191 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 5192 | } |
70bccea4 AM |
5193 | loc = htab->relgot->contents; |
5194 | loc += (htab->relgot->reloc_count++ | |
5195 | * sizeof (Elf32_External_Rela)); | |
5196 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
5197 | } |
5198 | ||
70bccea4 AM |
5199 | /* Init the .got section contents if we're not |
5200 | emitting a reloc. */ | |
5201 | else | |
7619e7c7 | 5202 | { |
70bccea4 AM |
5203 | bfd_vma value = relocation; |
5204 | ||
7b609f53 AM |
5205 | if (tls_ty == (TLS_TLS | TLS_LD)) |
5206 | value = 1; | |
5207 | else if (tls_ty != 0) | |
70bccea4 | 5208 | { |
e1918d23 | 5209 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 5210 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 5211 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 5212 | |
7b609f53 AM |
5213 | if (tls_ty == (TLS_TLS | TLS_GD)) |
5214 | { | |
5215 | bfd_put_32 (output_bfd, value, | |
5216 | htab->got->contents + off + 4); | |
5217 | value = 1; | |
5218 | } | |
70bccea4 | 5219 | } |
70bccea4 AM |
5220 | bfd_put_32 (output_bfd, value, |
5221 | htab->got->contents + off); | |
7619e7c7 | 5222 | } |
70bccea4 AM |
5223 | |
5224 | off += 4; | |
5225 | if (tls_ty & (TLS_LD | TLS_GD)) | |
5226 | off += 4; | |
7619e7c7 | 5227 | } |
70bccea4 AM |
5228 | while (tls_m != 0); |
5229 | ||
5230 | off = *offp; | |
5231 | *offp = off | 1; | |
7619e7c7 AM |
5232 | } |
5233 | ||
5234 | if (off >= (bfd_vma) -2) | |
5235 | abort (); | |
5236 | ||
70bccea4 AM |
5237 | if ((tls_type & TLS_TLS) != 0) |
5238 | { | |
5239 | if (tls_type != (TLS_TLS | TLS_LD)) | |
5240 | { | |
5241 | if ((tls_mask & TLS_LD) != 0 | |
5242 | && !(h == NULL | |
f5385ebf | 5243 | || !h->def_dynamic)) |
70bccea4 AM |
5244 | off += 8; |
5245 | if (tls_type != (TLS_TLS | TLS_GD)) | |
5246 | { | |
5247 | if ((tls_mask & TLS_GD) != 0) | |
5248 | off += 8; | |
5249 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
5250 | { | |
5251 | if ((tls_mask & TLS_DTPREL) != 0) | |
5252 | off += 4; | |
5253 | } | |
5254 | } | |
5255 | } | |
5256 | } | |
5257 | ||
7619e7c7 AM |
5258 | relocation = htab->got->output_offset + off - 4; |
5259 | ||
5260 | /* Addends on got relocations don't make much sense. | |
5261 | x+off@got is actually x@got+off, and since the got is | |
5262 | generated by a hash table traversal, the value in the | |
5263 | got at entry m+n bears little relation to the entry m. */ | |
5264 | if (addend != 0) | |
5265 | (*_bfd_error_handler) | |
d003868e AM |
5266 | (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"), |
5267 | input_bfd, | |
5268 | input_section, | |
7619e7c7 | 5269 | (long) rel->r_offset, |
7b609f53 | 5270 | howto->name, |
7619e7c7 AM |
5271 | sym_name); |
5272 | } | |
70bccea4 | 5273 | break; |
7619e7c7 | 5274 | |
252b5132 | 5275 | /* Relocations that need no special processing. */ |
7619e7c7 | 5276 | case R_PPC_LOCAL24PC: |
252b5132 RH |
5277 | /* It makes no sense to point a local relocation |
5278 | at a symbol not in this object. */ | |
7b609f53 | 5279 | if (unresolved_reloc) |
252b5132 | 5280 | { |
464e1740 ILT |
5281 | if (! (*info->callbacks->undefined_symbol) (info, |
5282 | h->root.root.string, | |
5283 | input_bfd, | |
5284 | input_section, | |
5cc7c785 | 5285 | rel->r_offset, |
b34976b6 AM |
5286 | TRUE)) |
5287 | return FALSE; | |
252b5132 RH |
5288 | continue; |
5289 | } | |
5290 | break; | |
5291 | ||
7619e7c7 AM |
5292 | case R_PPC_DTPREL16: |
5293 | case R_PPC_DTPREL16_LO: | |
5294 | case R_PPC_DTPREL16_HI: | |
5295 | case R_PPC_DTPREL16_HA: | |
e1918d23 | 5296 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
5297 | break; |
5298 | ||
70bccea4 AM |
5299 | /* Relocations that may need to be propagated if this is a shared |
5300 | object. */ | |
7619e7c7 AM |
5301 | case R_PPC_TPREL16: |
5302 | case R_PPC_TPREL16_LO: | |
5303 | case R_PPC_TPREL16_HI: | |
5304 | case R_PPC_TPREL16_HA: | |
e1918d23 | 5305 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
5306 | /* The TPREL16 relocs shouldn't really be used in shared |
5307 | libs as they will result in DT_TEXTREL being set, but | |
5308 | support them anyway. */ | |
5309 | goto dodyn; | |
5310 | ||
5311 | case R_PPC_TPREL32: | |
e1918d23 | 5312 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
5313 | goto dodyn; |
5314 | ||
5315 | case R_PPC_DTPREL32: | |
e1918d23 | 5316 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
5317 | goto dodyn; |
5318 | ||
e515b051 AM |
5319 | case R_PPC_DTPMOD32: |
5320 | relocation = 1; | |
5321 | addend = 0; | |
5322 | goto dodyn; | |
5323 | ||
7619e7c7 AM |
5324 | case R_PPC_REL24: |
5325 | case R_PPC_REL32: | |
5326 | case R_PPC_REL14: | |
5327 | case R_PPC_REL14_BRTAKEN: | |
5328 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
5329 | /* If these relocations are not to a named symbol, they can be |
5330 | handled right here, no need to bother the dynamic linker. */ | |
f6c52c13 AM |
5331 | if (SYMBOL_REFERENCES_LOCAL (info, h) |
5332 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 5333 | break; |
70bccea4 | 5334 | /* fall through */ |
252b5132 | 5335 | |
70bccea4 AM |
5336 | /* Relocations that always need to be propagated if this is a shared |
5337 | object. */ | |
7619e7c7 AM |
5338 | case R_PPC_ADDR32: |
5339 | case R_PPC_ADDR24: | |
5340 | case R_PPC_ADDR16: | |
5341 | case R_PPC_ADDR16_LO: | |
5342 | case R_PPC_ADDR16_HI: | |
5343 | case R_PPC_ADDR16_HA: | |
5344 | case R_PPC_ADDR14: | |
5345 | case R_PPC_ADDR14_BRTAKEN: | |
5346 | case R_PPC_ADDR14_BRNTAKEN: | |
5347 | case R_PPC_UADDR32: | |
5348 | case R_PPC_UADDR16: | |
ee05f2fe AM |
5349 | /* r_symndx will be zero only for relocs against symbols |
5350 | from removed linkonce sections, or sections discarded by | |
5351 | a linker script. */ | |
7619e7c7 | 5352 | dodyn: |
ee05f2fe AM |
5353 | if (r_symndx == 0) |
5354 | break; | |
5355 | /* Fall thru. */ | |
5356 | ||
5357 | if ((info->shared | |
4e795f50 AM |
5358 | && (h == NULL |
5359 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5360 | || h->root.type != bfd_link_hash_undefweak) | |
ee05f2fe | 5361 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 5362 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
5363 | || (ELIMINATE_COPY_RELOCS |
5364 | && !info->shared | |
5365 | && (input_section->flags & SEC_ALLOC) != 0 | |
5366 | && h != NULL | |
5367 | && h->dynindx != -1 | |
f5385ebf AM |
5368 | && !h->non_got_ref |
5369 | && h->def_dynamic | |
5370 | && !h->def_regular)) | |
252b5132 | 5371 | { |
0bb2d96a | 5372 | int skip; |
252b5132 RH |
5373 | |
5374 | #ifdef DEBUG | |
55fd94b0 AM |
5375 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
5376 | "create relocation for %s\n", | |
70bccea4 AM |
5377 | (h && h->root.root.string |
5378 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
5379 | #endif |
5380 | ||
5381 | /* When generating a shared object, these relocations | |
70bccea4 AM |
5382 | are copied into the output file to be resolved at run |
5383 | time. */ | |
252b5132 RH |
5384 | if (sreloc == NULL) |
5385 | { | |
5386 | const char *name; | |
5387 | ||
5388 | name = (bfd_elf_string_from_elf_section | |
5389 | (input_bfd, | |
5390 | elf_elfheader (input_bfd)->e_shstrndx, | |
5391 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
5392 | if (name == NULL) | |
b34976b6 | 5393 | return FALSE; |
252b5132 RH |
5394 | |
5395 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
5396 | && strcmp (bfd_get_section_name (input_bfd, | |
5397 | input_section), | |
5398 | name + 5) == 0); | |
5399 | ||
7619e7c7 | 5400 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
5401 | BFD_ASSERT (sreloc != NULL); |
5402 | } | |
5403 | ||
0bb2d96a | 5404 | skip = 0; |
252b5132 | 5405 | |
c629eae0 JJ |
5406 | outrel.r_offset = |
5407 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5408 | rel->r_offset); | |
0bb2d96a JJ |
5409 | if (outrel.r_offset == (bfd_vma) -1 |
5410 | || outrel.r_offset == (bfd_vma) -2) | |
5411 | skip = (int) outrel.r_offset; | |
252b5132 RH |
5412 | outrel.r_offset += (input_section->output_section->vma |
5413 | + input_section->output_offset); | |
5414 | ||
5415 | if (skip) | |
5416 | memset (&outrel, 0, sizeof outrel); | |
f6c52c13 | 5417 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 5418 | { |
7619e7c7 | 5419 | unresolved_reloc = FALSE; |
252b5132 RH |
5420 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
5421 | outrel.r_addend = rel->r_addend; | |
5422 | } | |
5423 | else | |
5424 | { | |
47388f4c AM |
5425 | outrel.r_addend = relocation + rel->r_addend; |
5426 | ||
252b5132 | 5427 | if (r_type == R_PPC_ADDR32) |
47388f4c | 5428 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); |
252b5132 RH |
5429 | else |
5430 | { | |
5431 | long indx; | |
5432 | ||
47388f4c | 5433 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
5434 | indx = 0; |
5435 | else if (sec == NULL || sec->owner == NULL) | |
5436 | { | |
5437 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5438 | return FALSE; |
252b5132 RH |
5439 | } |
5440 | else | |
5441 | { | |
5442 | asection *osec; | |
5443 | ||
47388f4c AM |
5444 | /* We are turning this relocation into one |
5445 | against a section symbol. It would be | |
5446 | proper to subtract the symbol's value, | |
5447 | osec->vma, from the emitted reloc addend, | |
5448 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
5449 | osec = sec->output_section; |
5450 | indx = elf_section_data (osec)->dynindx; | |
8da6118f | 5451 | BFD_ASSERT (indx > 0); |
252b5132 RH |
5452 | #ifdef DEBUG |
5453 | if (indx <= 0) | |
55fd94b0 AM |
5454 | printf ("indx=%d section=%s flags=%08x name=%s\n", |
5455 | indx, osec->name, osec->flags, | |
5456 | h->root.root.string); | |
252b5132 RH |
5457 | #endif |
5458 | } | |
5459 | ||
5460 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 RH |
5461 | } |
5462 | } | |
5463 | ||
947216bf AM |
5464 | loc = sreloc->contents; |
5465 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
5466 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 5467 | |
2243deae | 5468 | if (skip == -1) |
252b5132 | 5469 | continue; |
2243deae L |
5470 | |
5471 | /* This reloc will be computed at runtime. We clear the memory | |
5472 | so that it contains predictable value. */ | |
5473 | if (! skip | |
5474 | && ((input_section->flags & SEC_ALLOC) != 0 | |
5475 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
5476 | { | |
5477 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
5478 | addend = 0; | |
5479 | break; | |
5480 | } | |
252b5132 | 5481 | } |
252b5132 RH |
5482 | break; |
5483 | ||
b4a38de6 AM |
5484 | case R_PPC_RELAX32PC_PLT: |
5485 | case R_PPC_RELAX32_PLT: | |
5486 | BFD_ASSERT (h != NULL | |
5487 | && h->plt.offset != (bfd_vma) -1 | |
5488 | && htab->plt != NULL); | |
5489 | ||
5490 | relocation = (htab->plt->output_section->vma | |
5491 | + htab->plt->output_offset | |
5492 | + h->plt.offset); | |
5493 | if (r_type == R_PPC_RELAX32_PLT) | |
5494 | goto relax32; | |
5495 | /* Fall thru */ | |
5496 | ||
f31a141e AM |
5497 | case R_PPC_RELAX32PC: |
5498 | relocation -= (input_section->output_section->vma | |
5499 | + input_section->output_offset | |
5500 | + rel->r_offset - 4); | |
5501 | /* Fall thru */ | |
b4a38de6 | 5502 | |
deaaf2f3 | 5503 | case R_PPC_RELAX32: |
b4a38de6 | 5504 | relax32: |
9abc968f AM |
5505 | { |
5506 | unsigned long t0; | |
5507 | unsigned long t1; | |
5508 | ||
5509 | t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5510 | t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); | |
5511 | ||
5512 | /* We're clearing the bits for R_PPC_ADDR16_HA | |
5513 | and R_PPC_ADDR16_LO here. */ | |
5514 | t0 &= ~0xffff; | |
5515 | t1 &= ~0xffff; | |
5516 | ||
5517 | /* t0 is HA, t1 is LO */ | |
5518 | relocation += addend; | |
5519 | t0 |= ((relocation + 0x8000) >> 16) & 0xffff; | |
5520 | t1 |= relocation & 0xffff; | |
5521 | ||
5522 | bfd_put_32 (output_bfd, t0, contents + rel->r_offset); | |
5523 | bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); | |
5524 | } | |
8517fae7 | 5525 | continue; |
deaaf2f3 | 5526 | |
70bccea4 | 5527 | /* Indirect .sdata relocation. */ |
7619e7c7 | 5528 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 5529 | BFD_ASSERT (htab->sdata[0].section != NULL); |
7619e7c7 | 5530 | relocation |
76750a2f AM |
5531 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
5532 | h, relocation, rel); | |
252b5132 RH |
5533 | break; |
5534 | ||
70bccea4 | 5535 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 5536 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 5537 | BFD_ASSERT (htab->sdata[1].section != NULL); |
7619e7c7 | 5538 | relocation |
76750a2f AM |
5539 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
5540 | h, relocation, rel); | |
252b5132 RH |
5541 | break; |
5542 | ||
70bccea4 AM |
5543 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
5544 | section, not the actual VMA. This is appropriate when generating | |
5545 | an embedded ELF object, for which the .got section acts like the | |
5546 | AIX .toc section. */ | |
7619e7c7 | 5547 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
55fd94b0 | 5548 | BFD_ASSERT (sec != NULL); |
252b5132 RH |
5549 | BFD_ASSERT (bfd_is_und_section (sec) |
5550 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
f12123c0 | 5551 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); |
252b5132 | 5552 | |
70bccea4 | 5553 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
5554 | break; |
5555 | ||
7619e7c7 | 5556 | case R_PPC_PLTREL24: |
252b5132 | 5557 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 5558 | procedure linkage table. */ |
252b5132 RH |
5559 | BFD_ASSERT (h != NULL); |
5560 | ||
5561 | if (h->plt.offset == (bfd_vma) -1 | |
7619e7c7 | 5562 | || htab->plt == NULL) |
252b5132 RH |
5563 | { |
5564 | /* We didn't make a PLT entry for this symbol. This | |
70bccea4 AM |
5565 | happens when statically linking PIC code, or when |
5566 | using -Bsymbolic. */ | |
252b5132 RH |
5567 | break; |
5568 | } | |
5569 | ||
7619e7c7 AM |
5570 | unresolved_reloc = FALSE; |
5571 | relocation = (htab->plt->output_section->vma | |
5572 | + htab->plt->output_offset | |
252b5132 | 5573 | + h->plt.offset); |
8da6118f | 5574 | break; |
252b5132 | 5575 | |
70bccea4 | 5576 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 5577 | case R_PPC_SDAREL16: |
252b5132 RH |
5578 | { |
5579 | const char *name; | |
5580 | ||
55fd94b0 | 5581 | BFD_ASSERT (sec != NULL); |
252b5132 | 5582 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
5583 | if (! ((strncmp (name, ".sdata", 6) == 0 |
5584 | && (name[6] == 0 || name[6] == '.')) | |
5585 | || (strncmp (name, ".sbss", 5) == 0 | |
5586 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 | 5587 | { |
55fd94b0 | 5588 | (*_bfd_error_handler) |
d003868e | 5589 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 5590 | "in the wrong output section (%s)"), |
d003868e | 5591 | input_bfd, |
55fd94b0 AM |
5592 | sym_name, |
5593 | howto->name, | |
5594 | name); | |
252b5132 | 5595 | } |
c9a2f333 | 5596 | addend -= htab->sdata[0].sym_val; |
252b5132 RH |
5597 | } |
5598 | break; | |
5599 | ||
70bccea4 | 5600 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 5601 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
5602 | { |
5603 | const char *name; | |
5604 | ||
55fd94b0 | 5605 | BFD_ASSERT (sec != NULL); |
252b5132 | 5606 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
5607 | if (! (strncmp (name, ".sdata2", 7) == 0 |
5608 | || strncmp (name, ".sbss2", 6) == 0)) | |
252b5132 | 5609 | { |
55fd94b0 | 5610 | (*_bfd_error_handler) |
d003868e | 5611 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 5612 | "in the wrong output section (%s)"), |
d003868e | 5613 | input_bfd, |
55fd94b0 AM |
5614 | sym_name, |
5615 | howto->name, | |
5616 | name); | |
c3668558 | 5617 | |
252b5132 | 5618 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5619 | ret = FALSE; |
252b5132 RH |
5620 | continue; |
5621 | } | |
c9a2f333 | 5622 | addend -= htab->sdata[1].sym_val; |
252b5132 RH |
5623 | } |
5624 | break; | |
5625 | ||
70bccea4 | 5626 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
5627 | case R_PPC_EMB_SDA21: |
5628 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
5629 | { |
5630 | const char *name; | |
5631 | int reg; | |
5632 | ||
55fd94b0 | 5633 | BFD_ASSERT (sec != NULL); |
252b5132 | 5634 | name = bfd_get_section_name (abfd, sec->output_section); |
b34976b6 | 5635 | if (((strncmp (name, ".sdata", 6) == 0 |
5f819128 AM |
5636 | && (name[6] == 0 || name[6] == '.')) |
5637 | || (strncmp (name, ".sbss", 5) == 0 | |
5638 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 RH |
5639 | { |
5640 | reg = 13; | |
c9a2f333 | 5641 | addend -= htab->sdata[0].sym_val; |
252b5132 RH |
5642 | } |
5643 | ||
5f819128 AM |
5644 | else if (strncmp (name, ".sdata2", 7) == 0 |
5645 | || strncmp (name, ".sbss2", 6) == 0) | |
252b5132 RH |
5646 | { |
5647 | reg = 2; | |
c9a2f333 | 5648 | addend -= htab->sdata[1].sym_val; |
252b5132 RH |
5649 | } |
5650 | ||
8da6118f KH |
5651 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
5652 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
5653 | { |
5654 | reg = 0; | |
5655 | } | |
5656 | ||
5657 | else | |
5658 | { | |
55fd94b0 | 5659 | (*_bfd_error_handler) |
d003868e | 5660 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 5661 | "in the wrong output section (%s)"), |
d003868e | 5662 | input_bfd, |
55fd94b0 AM |
5663 | sym_name, |
5664 | howto->name, | |
5665 | name); | |
252b5132 RH |
5666 | |
5667 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5668 | ret = FALSE; |
252b5132 RH |
5669 | continue; |
5670 | } | |
5671 | ||
5672 | if (r_type == R_PPC_EMB_SDA21) | |
5673 | { /* fill in register field */ | |
7619e7c7 | 5674 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 5675 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 5676 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
5677 | } |
5678 | } | |
5679 | break; | |
5680 | ||
70bccea4 | 5681 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
5682 | case R_PPC_SECTOFF: |
5683 | case R_PPC_SECTOFF_LO: | |
5684 | case R_PPC_SECTOFF_HI: | |
5685 | case R_PPC_SECTOFF_HA: | |
55fd94b0 | 5686 | BFD_ASSERT (sec != NULL); |
252b5132 | 5687 | addend -= sec->output_section->vma; |
252b5132 RH |
5688 | break; |
5689 | ||
70bccea4 | 5690 | /* Negative relocations. */ |
7619e7c7 AM |
5691 | case R_PPC_EMB_NADDR32: |
5692 | case R_PPC_EMB_NADDR16: | |
5693 | case R_PPC_EMB_NADDR16_LO: | |
5694 | case R_PPC_EMB_NADDR16_HI: | |
5695 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 5696 | addend -= 2 * relocation; |
252b5132 RH |
5697 | break; |
5698 | ||
7619e7c7 AM |
5699 | case R_PPC_COPY: |
5700 | case R_PPC_GLOB_DAT: | |
5701 | case R_PPC_JMP_SLOT: | |
5702 | case R_PPC_RELATIVE: | |
5703 | case R_PPC_PLT32: | |
5704 | case R_PPC_PLTREL32: | |
5705 | case R_PPC_PLT16_LO: | |
5706 | case R_PPC_PLT16_HI: | |
5707 | case R_PPC_PLT16_HA: | |
5708 | case R_PPC_ADDR30: | |
5709 | case R_PPC_EMB_RELSEC16: | |
5710 | case R_PPC_EMB_RELST_LO: | |
5711 | case R_PPC_EMB_RELST_HI: | |
5712 | case R_PPC_EMB_RELST_HA: | |
5713 | case R_PPC_EMB_BIT_FLD: | |
5714 | (*_bfd_error_handler) | |
d003868e AM |
5715 | (_("%B: relocation %s is not yet supported for symbol %s."), |
5716 | input_bfd, | |
7619e7c7 AM |
5717 | howto->name, |
5718 | sym_name); | |
252b5132 RH |
5719 | |
5720 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 5721 | ret = FALSE; |
252b5132 | 5722 | continue; |
7619e7c7 | 5723 | } |
252b5132 | 5724 | |
7619e7c7 AM |
5725 | /* Do any further special processing. */ |
5726 | switch (r_type) | |
5727 | { | |
5728 | default: | |
5729 | break; | |
5730 | ||
5731 | case R_PPC_ADDR16_HA: | |
5732 | case R_PPC_GOT16_HA: | |
5733 | case R_PPC_PLT16_HA: | |
5734 | case R_PPC_SECTOFF_HA: | |
5735 | case R_PPC_TPREL16_HA: | |
5736 | case R_PPC_DTPREL16_HA: | |
5737 | case R_PPC_GOT_TLSGD16_HA: | |
5738 | case R_PPC_GOT_TLSLD16_HA: | |
5739 | case R_PPC_GOT_TPREL16_HA: | |
5740 | case R_PPC_GOT_DTPREL16_HA: | |
5741 | case R_PPC_EMB_NADDR16_HA: | |
5742 | case R_PPC_EMB_RELST_HA: | |
5743 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 5744 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
5745 | 'sec' would be NULL, and we should leave the symbol |
5746 | alone (it will be set to zero elsewhere in the link). */ | |
5747 | if (sec != NULL) | |
e515b051 AM |
5748 | /* Add 0x10000 if sign bit in 0:15 is set. |
5749 | Bits 0:15 are not used. */ | |
5750 | addend += 0x8000; | |
7619e7c7 | 5751 | break; |
252b5132 RH |
5752 | } |
5753 | ||
252b5132 | 5754 | #ifdef DEBUG |
55fd94b0 AM |
5755 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
5756 | "offset = %ld, addend = %ld\n", | |
252b5132 | 5757 | howto->name, |
8da6118f | 5758 | (int) r_type, |
252b5132 RH |
5759 | sym_name, |
5760 | r_symndx, | |
7619e7c7 | 5761 | (long) rel->r_offset, |
8da6118f | 5762 | (long) addend); |
252b5132 RH |
5763 | #endif |
5764 | ||
7619e7c7 AM |
5765 | if (unresolved_reloc |
5766 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 5767 | && h->def_dynamic)) |
7619e7c7 AM |
5768 | { |
5769 | (*_bfd_error_handler) | |
d003868e AM |
5770 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
5771 | input_bfd, | |
5772 | input_section, | |
7619e7c7 | 5773 | (long) rel->r_offset, |
7b609f53 | 5774 | howto->name, |
7619e7c7 AM |
5775 | sym_name); |
5776 | ret = FALSE; | |
5777 | } | |
5778 | ||
252b5132 RH |
5779 | r = _bfd_final_link_relocate (howto, |
5780 | input_bfd, | |
5781 | input_section, | |
5782 | contents, | |
7619e7c7 | 5783 | rel->r_offset, |
252b5132 RH |
5784 | relocation, |
5785 | addend); | |
5786 | ||
7619e7c7 | 5787 | if (r != bfd_reloc_ok) |
252b5132 | 5788 | { |
7619e7c7 AM |
5789 | if (sym_name == NULL) |
5790 | sym_name = "(null)"; | |
5791 | if (r == bfd_reloc_overflow) | |
252b5132 | 5792 | { |
7619e7c7 AM |
5793 | if (warned) |
5794 | continue; | |
5795 | if (h != NULL | |
5796 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
5797 | && howto->pc_relative) |
5798 | { | |
5799 | /* Assume this is a call protected by other code that | |
5800 | detect the symbol is undefined. If this is the case, | |
5801 | we can safely ignore the overflow. If not, the | |
5802 | program is hosed anyway, and a little warning isn't | |
5803 | going to help. */ | |
252b5132 | 5804 | |
dc1bc0c9 RH |
5805 | continue; |
5806 | } | |
252b5132 | 5807 | |
7619e7c7 | 5808 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 5809 | (h ? &h->root : NULL), |
7619e7c7 AM |
5810 | sym_name, |
5811 | howto->name, | |
5812 | rel->r_addend, | |
5813 | input_bfd, | |
5814 | input_section, | |
5815 | rel->r_offset)) | |
5816 | return FALSE; | |
dc1bc0c9 RH |
5817 | } |
5818 | else | |
5819 | { | |
7619e7c7 | 5820 | (*_bfd_error_handler) |
d003868e AM |
5821 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
5822 | input_bfd, input_section, | |
7b609f53 | 5823 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 5824 | ret = FALSE; |
252b5132 RH |
5825 | } |
5826 | } | |
5827 | } | |
5828 | ||
252b5132 RH |
5829 | #ifdef DEBUG |
5830 | fprintf (stderr, "\n"); | |
5831 | #endif | |
5832 | ||
5833 | return ret; | |
5834 | } | |
252b5132 | 5835 | \f |
25dbc73a AM |
5836 | /* Finish up dynamic symbol handling. We set the contents of various |
5837 | dynamic sections here. */ | |
c5fccbec | 5838 | |
b34976b6 | 5839 | static bfd_boolean |
25dbc73a AM |
5840 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
5841 | struct bfd_link_info *info, | |
5842 | struct elf_link_hash_entry *h, | |
5843 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 5844 | { |
25dbc73a | 5845 | struct ppc_elf_link_hash_table *htab; |
e1a9cb8e | 5846 | |
25dbc73a AM |
5847 | #ifdef DEBUG |
5848 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
5849 | h->root.root.string); | |
5850 | #endif | |
e1a9cb8e | 5851 | |
25dbc73a AM |
5852 | htab = ppc_elf_hash_table (info); |
5853 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 5854 | |
25dbc73a | 5855 | if (h->plt.offset != (bfd_vma) -1) |
e1a9cb8e | 5856 | { |
25dbc73a AM |
5857 | Elf_Internal_Rela rela; |
5858 | bfd_byte *loc; | |
5859 | bfd_vma reloc_index; | |
e1a9cb8e | 5860 | |
25dbc73a AM |
5861 | #ifdef DEBUG |
5862 | fprintf (stderr, ", plt_offset = %d", h->plt.offset); | |
5863 | #endif | |
e1a9cb8e | 5864 | |
25dbc73a AM |
5865 | /* This symbol has an entry in the procedure linkage table. Set |
5866 | it up. */ | |
e1a9cb8e | 5867 | |
25dbc73a AM |
5868 | BFD_ASSERT (h->dynindx != -1); |
5869 | BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL); | |
e1a9cb8e | 5870 | |
25dbc73a AM |
5871 | /* We don't need to fill in the .plt. The ppc dynamic linker |
5872 | will fill it in. */ | |
e1a9cb8e | 5873 | |
25dbc73a AM |
5874 | /* Fill in the entry in the .rela.plt section. */ |
5875 | rela.r_offset = (htab->plt->output_section->vma | |
5876 | + htab->plt->output_offset | |
5877 | + h->plt.offset); | |
5878 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
5879 | rela.r_addend = 0; | |
e1a9cb8e | 5880 | |
25dbc73a AM |
5881 | reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE; |
5882 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES) | |
5883 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; | |
5884 | loc = (htab->relplt->contents | |
5885 | + reloc_index * sizeof (Elf32_External_Rela)); | |
5886 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
e1a9cb8e | 5887 | |
25dbc73a AM |
5888 | if (!h->def_regular) |
5889 | { | |
5890 | /* Mark the symbol as undefined, rather than as defined in | |
5891 | the .plt section. Leave the value alone. */ | |
5892 | sym->st_shndx = SHN_UNDEF; | |
5893 | /* If the symbol is weak, we do need to clear the value. | |
5894 | Otherwise, the PLT entry would provide a definition for | |
5895 | the symbol even if the symbol wasn't defined anywhere, | |
5896 | and so the symbol would never be NULL. */ | |
5897 | if (!h->ref_regular_nonweak) | |
5898 | sym->st_value = 0; | |
5899 | } | |
e1a9cb8e NC |
5900 | } |
5901 | ||
25dbc73a AM |
5902 | if (h->needs_copy) |
5903 | { | |
5904 | asection *s; | |
5905 | Elf_Internal_Rela rela; | |
5906 | bfd_byte *loc; | |
e1a9cb8e | 5907 | |
25dbc73a | 5908 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 5909 | |
25dbc73a AM |
5910 | #ifdef DEBUG |
5911 | fprintf (stderr, ", copy"); | |
5912 | #endif | |
e1a9cb8e | 5913 | |
25dbc73a | 5914 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 5915 | |
25dbc73a AM |
5916 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
5917 | s = htab->relsbss; | |
5918 | else | |
5919 | s = htab->relbss; | |
5920 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 5921 | |
25dbc73a AM |
5922 | rela.r_offset = (h->root.u.def.value |
5923 | + h->root.u.def.section->output_section->vma | |
5924 | + h->root.u.def.section->output_offset); | |
5925 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
5926 | rela.r_addend = 0; | |
5927 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5928 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5929 | } | |
e1a9cb8e | 5930 | |
25dbc73a AM |
5931 | #ifdef DEBUG |
5932 | fprintf (stderr, "\n"); | |
5933 | #endif | |
e1a9cb8e | 5934 | |
25dbc73a AM |
5935 | /* Mark some specially defined symbols as absolute. */ |
5936 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5937 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
5938 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
5939 | sym->st_shndx = SHN_ABS; | |
e1a9cb8e | 5940 | |
25dbc73a AM |
5941 | return TRUE; |
5942 | } | |
5943 | \f | |
5944 | static enum elf_reloc_type_class | |
5945 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
e1a9cb8e | 5946 | { |
25dbc73a AM |
5947 | switch (ELF32_R_TYPE (rela->r_info)) |
5948 | { | |
5949 | case R_PPC_RELATIVE: | |
5950 | return reloc_class_relative; | |
5951 | case R_PPC_REL24: | |
5952 | case R_PPC_ADDR24: | |
5953 | case R_PPC_JMP_SLOT: | |
5954 | return reloc_class_plt; | |
5955 | case R_PPC_COPY: | |
5956 | return reloc_class_copy; | |
5957 | default: | |
5958 | return reloc_class_normal; | |
5959 | } | |
e1a9cb8e | 5960 | } |
25dbc73a AM |
5961 | \f |
5962 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 5963 | |
25dbc73a AM |
5964 | static bfd_boolean |
5965 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
5966 | struct bfd_link_info *info) | |
e1a9cb8e | 5967 | { |
25dbc73a AM |
5968 | asection *sdyn; |
5969 | struct ppc_elf_link_hash_table *htab; | |
e1a9cb8e | 5970 | |
25dbc73a AM |
5971 | #ifdef DEBUG |
5972 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
5973 | #endif | |
6b0817e5 | 5974 | |
25dbc73a AM |
5975 | htab = ppc_elf_hash_table (info); |
5976 | sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic"); | |
e1a9cb8e | 5977 | |
25dbc73a | 5978 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 5979 | { |
25dbc73a | 5980 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 5981 | |
25dbc73a | 5982 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 5983 | |
25dbc73a AM |
5984 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
5985 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
5986 | for (; dyncon < dynconend; dyncon++) | |
5987 | { | |
5988 | Elf_Internal_Dyn dyn; | |
5989 | asection *s; | |
e1a9cb8e | 5990 | |
25dbc73a | 5991 | bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn); |
86bbe32f | 5992 | |
25dbc73a AM |
5993 | switch (dyn.d_tag) |
5994 | { | |
5995 | case DT_PLTGOT: | |
5996 | s = htab->plt; | |
5997 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
5998 | break; | |
86bbe32f | 5999 | |
25dbc73a AM |
6000 | case DT_PLTRELSZ: |
6001 | dyn.d_un.d_val = htab->relplt->size; | |
6002 | break; | |
e1a9cb8e | 6003 | |
25dbc73a AM |
6004 | case DT_JMPREL: |
6005 | s = htab->relplt; | |
6006 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
6007 | break; | |
2f89ff8d | 6008 | |
25dbc73a AM |
6009 | default: |
6010 | continue; | |
6011 | } | |
4c45e5c9 | 6012 | |
25dbc73a AM |
6013 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
6014 | } | |
6015 | } | |
4c45e5c9 | 6016 | |
25dbc73a AM |
6017 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
6018 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
6019 | if (htab->got) | |
6020 | { | |
6021 | unsigned char *contents = htab->got->contents; | |
6022 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); | |
2f89ff8d | 6023 | |
25dbc73a AM |
6024 | if (sdyn == NULL) |
6025 | bfd_put_32 (output_bfd, 0, contents + 4); | |
6026 | else | |
6027 | bfd_put_32 (output_bfd, | |
6028 | sdyn->output_section->vma + sdyn->output_offset, | |
6029 | contents + 4); | |
6030 | ||
6031 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
6032 | } | |
6033 | ||
6034 | return TRUE; | |
6035 | } | |
e1a9cb8e | 6036 | \f |
252b5132 RH |
6037 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
6038 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
6039 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
6040 | #define TARGET_BIG_NAME "elf32-powerpc" | |
6041 | #define ELF_ARCH bfd_arch_powerpc | |
6042 | #define ELF_MACHINE_CODE EM_PPC | |
d0facd1b NC |
6043 | #ifdef __QNXTARGET__ |
6044 | #define ELF_MAXPAGESIZE 0x1000 | |
6045 | #else | |
252b5132 | 6046 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 6047 | #endif |
b1342370 | 6048 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
6049 | #define elf_info_to_howto ppc_elf_info_to_howto |
6050 | ||
6051 | #ifdef EM_CYGNUS_POWERPC | |
6052 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
6053 | #endif | |
6054 | ||
6055 | #ifdef EM_PPC_OLD | |
6056 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
6057 | #endif | |
6058 | ||
6059 | #define elf_backend_plt_not_loaded 1 | |
6060 | #define elf_backend_got_symbol_offset 4 | |
6061 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 6062 | #define elf_backend_can_refcount 1 |
252b5132 | 6063 | #define elf_backend_got_header_size 12 |
b491616a | 6064 | #define elf_backend_rela_normal 1 |
252b5132 | 6065 | |
43c40ab2 | 6066 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 6067 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 6068 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 RH |
6069 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
6070 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags | |
70bccea4 | 6071 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
252b5132 | 6072 | |
feee612b | 6073 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
6074 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
6075 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
6076 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
6077 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
6078 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
6079 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 6080 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
6081 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
6082 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
6083 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
6084 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
6085 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
6086 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
6087 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
c5fccbec DJ |
6088 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
6089 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
29c2fb7c | 6090 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
6091 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
6092 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
6093 | #define elf_backend_write_section ppc_elf_write_section | |
2f89ff8d | 6094 | #define elf_backend_special_sections ppc_elf_special_sections |
4c45e5c9 | 6095 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
252b5132 RH |
6096 | |
6097 | #include "elf32-target.h" |