Commit | Line | Data |
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bcbe2c71 | 1 | /* PowerPC-specific support for 32-bit ELF |
71897943 | 2 | Copyright 1994, 1995, 1996 Free Software Foundation, Inc. |
bcbe2c71 MM |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
dd82c578 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bcbe2c71 MM |
20 | |
21 | /* This file is based on a preliminary PowerPC ELF ABI. The | |
22 | information may not match the final PowerPC ELF ABI. It includes | |
23 | suggestions from the in-progress Embedded PowerPC ABI, and that | |
24 | information may also not match. */ | |
25 | ||
26 | #include "bfd.h" | |
27 | #include "sysdep.h" | |
ede4eed4 | 28 | #include "bfdlink.h" |
bcbe2c71 | 29 | #include "libbfd.h" |
08556813 | 30 | #include "elf-bfd.h" |
ede4eed4 | 31 | #include "elf/ppc.h" |
bcbe2c71 | 32 | |
08556813 MM |
33 | #define USE_RELA /* we want RELA relocations, not REL */ |
34 | ||
35 | /* PowerPC relocations defined by the ABIs */ | |
36 | enum ppc_reloc_type | |
37 | { | |
38 | R_PPC_NONE = 0, | |
39 | R_PPC_ADDR32 = 1, | |
40 | R_PPC_ADDR24 = 2, | |
41 | R_PPC_ADDR16 = 3, | |
42 | R_PPC_ADDR16_LO = 4, | |
43 | R_PPC_ADDR16_HI = 5, | |
44 | R_PPC_ADDR16_HA = 6, | |
45 | R_PPC_ADDR14 = 7, | |
46 | R_PPC_ADDR14_BRTAKEN = 8, | |
47 | R_PPC_ADDR14_BRNTAKEN = 9, | |
48 | R_PPC_REL24 = 10, | |
49 | R_PPC_REL14 = 11, | |
50 | R_PPC_REL14_BRTAKEN = 12, | |
51 | R_PPC_REL14_BRNTAKEN = 13, | |
52 | R_PPC_GOT16 = 14, | |
53 | R_PPC_GOT16_LO = 15, | |
54 | R_PPC_GOT16_HI = 16, | |
55 | R_PPC_GOT16_HA = 17, | |
56 | R_PPC_PLTREL24 = 18, | |
57 | R_PPC_COPY = 19, | |
58 | R_PPC_GLOB_DAT = 20, | |
59 | R_PPC_JMP_SLOT = 21, | |
60 | R_PPC_RELATIVE = 22, | |
61 | R_PPC_LOCAL24PC = 23, | |
62 | R_PPC_UADDR32 = 24, | |
63 | R_PPC_UADDR16 = 25, | |
64 | R_PPC_REL32 = 26, | |
65 | R_PPC_PLT32 = 27, | |
66 | R_PPC_PLTREL32 = 28, | |
67 | R_PPC_PLT16_LO = 29, | |
68 | R_PPC_PLT16_HI = 30, | |
69 | R_PPC_PLT16_HA = 31, | |
70 | R_PPC_SDAREL16 = 32, | |
71 | R_PPC_SECTOFF = 33, | |
72 | R_PPC_SECTOFF_LO = 34, | |
73 | R_PPC_SECTOFF_HI = 35, | |
74 | R_PPC_SECTOFF_HA = 36, | |
75 | ||
76 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
77 | in the SVR4 ELF ABI. */ | |
78 | R_PPC_EMB_NADDR32 = 101, | |
79 | R_PPC_EMB_NADDR16 = 102, | |
80 | R_PPC_EMB_NADDR16_LO = 103, | |
81 | R_PPC_EMB_NADDR16_HI = 104, | |
82 | R_PPC_EMB_NADDR16_HA = 105, | |
83 | R_PPC_EMB_SDAI16 = 106, | |
84 | R_PPC_EMB_SDA2I16 = 107, | |
85 | R_PPC_EMB_SDA2REL = 108, | |
86 | R_PPC_EMB_SDA21 = 109, | |
87 | R_PPC_EMB_MRKREF = 110, | |
88 | R_PPC_EMB_RELSEC16 = 111, | |
89 | R_PPC_EMB_RELST_LO = 112, | |
90 | R_PPC_EMB_RELST_HI = 113, | |
91 | R_PPC_EMB_RELST_HA = 114, | |
92 | R_PPC_EMB_BIT_FLD = 115, | |
93 | R_PPC_EMB_RELSDA = 116, | |
94 | ||
95 | /* This is a phony reloc to handle any old fashioned TOC16 references | |
96 | that may still be in object files. */ | |
97 | R_PPC_TOC16 = 255, | |
98 | ||
99 | R_PPC_max | |
100 | }; | |
101 | ||
ede4eed4 | 102 | static reloc_howto_type *ppc_elf_reloc_type_lookup |
bcbe2c71 | 103 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
ede4eed4 | 104 | static void ppc_elf_info_to_howto |
bcbe2c71 | 105 | PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); |
ede4eed4 | 106 | static void ppc_elf_howto_init PARAMS ((void)); |
dab45734 ILT |
107 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
108 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
ede4eed4 KR |
109 | static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword)); |
110 | static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); | |
111 | static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
112 | ||
3f7ca26b MM |
113 | static int ppc_elf_additional_program_headers PARAMS ((bfd *)); |
114 | static boolean ppc_elf_modify_segment_map PARAMS ((bfd *)); | |
115 | ||
83f4323e MM |
116 | static boolean ppc_elf_section_from_shdr PARAMS ((bfd *, |
117 | Elf32_Internal_Shdr *, | |
118 | char *)); | |
119 | ||
3b3753b8 MM |
120 | static elf_linker_section_t *ppc_elf_create_linker_section |
121 | PARAMS ((bfd *abfd, | |
122 | struct bfd_link_info *info, | |
123 | enum elf_linker_section_enum)); | |
1c3a295b | 124 | |
08556813 MM |
125 | static boolean ppc_elf_check_relocs PARAMS ((bfd *, |
126 | struct bfd_link_info *, | |
127 | asection *, | |
128 | const Elf_Internal_Rela *)); | |
129 | ||
130 | static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *, | |
131 | struct elf_link_hash_entry *)); | |
132 | ||
133 | static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR)); | |
134 | ||
135 | static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); | |
136 | ||
ede4eed4 KR |
137 | static boolean ppc_elf_relocate_section PARAMS ((bfd *, |
138 | struct bfd_link_info *info, | |
139 | bfd *, | |
140 | asection *, | |
141 | bfd_byte *, | |
142 | Elf_Internal_Rela *relocs, | |
143 | Elf_Internal_Sym *local_syms, | |
144 | asection **)); | |
bcbe2c71 | 145 | |
9d621c7d MM |
146 | static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *, |
147 | struct bfd_link_info *, | |
148 | const Elf_Internal_Sym *, | |
149 | const char **, | |
150 | flagword *, | |
151 | asection **, | |
152 | bfd_vma *)); | |
153 | ||
08556813 MM |
154 | static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *, |
155 | struct bfd_link_info *, | |
156 | struct elf_link_hash_entry *, | |
157 | Elf_Internal_Sym *)); | |
bcbe2c71 | 158 | |
08556813 | 159 | static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); |
bcbe2c71 | 160 | |
d8fd85ad MM |
161 | #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */ |
162 | #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */ | |
163 | #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */ | |
08556813 MM |
164 | |
165 | /* The name of the dynamic interpreter. This is put in the .interp | |
166 | section. */ | |
167 | ||
168 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
bcbe2c71 | 169 | |
3f7ca26b MM |
170 | /* The size in bytes of an entry in the procedure linkage table, and of the initial size |
171 | of the plt reserved for the dynamic linker. */ | |
172 | ||
173 | #define PLT_ENTRY_SIZE 12 | |
174 | #define PLT_INITIAL_ENTRY_SIZE 72 | |
175 | ||
ede4eed4 KR |
176 | \f |
177 | static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ]; | |
178 | ||
179 | static reloc_howto_type ppc_elf_howto_raw[] = | |
bcbe2c71 MM |
180 | { |
181 | /* This reloc does nothing. */ | |
08556813 MM |
182 | HOWTO (R_PPC_NONE, /* type */ |
183 | 0, /* rightshift */ | |
184 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
185 | 32, /* bitsize */ | |
186 | false, /* pc_relative */ | |
187 | 0, /* bitpos */ | |
bcbe2c71 | 188 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 189 | bfd_elf_generic_reloc, /* special_function */ |
08556813 MM |
190 | "R_PPC_NONE", /* name */ |
191 | false, /* partial_inplace */ | |
192 | 0, /* src_mask */ | |
193 | 0, /* dst_mask */ | |
194 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
195 | |
196 | /* A standard 32 bit relocation. */ | |
08556813 MM |
197 | HOWTO (R_PPC_ADDR32, /* type */ |
198 | 0, /* rightshift */ | |
199 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 32, /* bitsize */ | |
201 | false, /* pc_relative */ | |
202 | 0, /* bitpos */ | |
bcbe2c71 | 203 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 204 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 205 | "R_PPC_ADDR32", /* name */ |
08556813 MM |
206 | false, /* partial_inplace */ |
207 | 0, /* src_mask */ | |
208 | 0xffffffff, /* dst_mask */ | |
209 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
210 | |
211 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
212 | FIXME: we don't check that, we just clear them. */ | |
08556813 MM |
213 | HOWTO (R_PPC_ADDR24, /* type */ |
214 | 0, /* rightshift */ | |
215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
216 | 26, /* bitsize */ | |
217 | false, /* pc_relative */ | |
218 | 0, /* bitpos */ | |
bcbe2c71 | 219 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 220 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 221 | "R_PPC_ADDR24", /* name */ |
08556813 MM |
222 | false, /* partial_inplace */ |
223 | 0, /* src_mask */ | |
224 | 0x3fffffc, /* dst_mask */ | |
225 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
226 | |
227 | /* A standard 16 bit relocation. */ | |
08556813 MM |
228 | HOWTO (R_PPC_ADDR16, /* type */ |
229 | 0, /* rightshift */ | |
230 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 16, /* bitsize */ | |
232 | false, /* pc_relative */ | |
233 | 0, /* bitpos */ | |
bcbe2c71 | 234 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 235 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 236 | "R_PPC_ADDR16", /* name */ |
08556813 MM |
237 | false, /* partial_inplace */ |
238 | 0, /* src_mask */ | |
239 | 0xffff, /* dst_mask */ | |
240 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
241 | |
242 | /* A 16 bit relocation without overflow. */ | |
08556813 MM |
243 | HOWTO (R_PPC_ADDR16_LO, /* type */ |
244 | 0, /* rightshift */ | |
245 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 16, /* bitsize */ | |
247 | false, /* pc_relative */ | |
248 | 0, /* bitpos */ | |
bcbe2c71 | 249 | complain_overflow_dont,/* complain_on_overflow */ |
bd2d10c0 | 250 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 251 | "R_PPC_ADDR16_LO", /* name */ |
08556813 MM |
252 | false, /* partial_inplace */ |
253 | 0, /* src_mask */ | |
254 | 0xffff, /* dst_mask */ | |
255 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
256 | |
257 | /* The high order 16 bits of an address. */ | |
08556813 MM |
258 | HOWTO (R_PPC_ADDR16_HI, /* type */ |
259 | 16, /* rightshift */ | |
260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
261 | 16, /* bitsize */ | |
262 | false, /* pc_relative */ | |
263 | 0, /* bitpos */ | |
bcbe2c71 | 264 | complain_overflow_dont, /* complain_on_overflow */ |
bd2d10c0 | 265 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 266 | "R_PPC_ADDR16_HI", /* name */ |
08556813 MM |
267 | false, /* partial_inplace */ |
268 | 0, /* src_mask */ | |
269 | 0xffff, /* dst_mask */ | |
270 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
271 | |
272 | /* The high order 16 bits of an address, plus 1 if the contents of | |
08556813 MM |
273 | the low 16 bits, treated as a signed number, is negative. */ |
274 | HOWTO (R_PPC_ADDR16_HA, /* type */ | |
275 | 16, /* rightshift */ | |
276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
277 | 16, /* bitsize */ | |
278 | false, /* pc_relative */ | |
279 | 0, /* bitpos */ | |
bcbe2c71 | 280 | complain_overflow_dont, /* complain_on_overflow */ |
dab45734 | 281 | ppc_elf_addr16_ha_reloc, /* special_function */ |
bcbe2c71 | 282 | "R_PPC_ADDR16_HA", /* name */ |
08556813 MM |
283 | false, /* partial_inplace */ |
284 | 0, /* src_mask */ | |
285 | 0xffff, /* dst_mask */ | |
286 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
287 | |
288 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
289 | FIXME: we don't check that, we just clear them. */ | |
08556813 MM |
290 | HOWTO (R_PPC_ADDR14, /* type */ |
291 | 0, /* rightshift */ | |
292 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
293 | 16, /* bitsize */ | |
294 | false, /* pc_relative */ | |
295 | 0, /* bitpos */ | |
bcbe2c71 | 296 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 297 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 298 | "R_PPC_ADDR14", /* name */ |
08556813 MM |
299 | false, /* partial_inplace */ |
300 | 0, /* src_mask */ | |
301 | 0xfffc, /* dst_mask */ | |
302 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
303 | |
304 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
08556813 MM |
305 | indicate that the branch is expected to be taken. The lower two |
306 | bits must be zero. */ | |
307 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ | |
308 | 0, /* rightshift */ | |
309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
310 | 16, /* bitsize */ | |
311 | false, /* pc_relative */ | |
312 | 0, /* bitpos */ | |
bcbe2c71 | 313 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 314 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 315 | "R_PPC_ADDR14_BRTAKEN",/* name */ |
08556813 MM |
316 | false, /* partial_inplace */ |
317 | 0, /* src_mask */ | |
318 | 0xfffc, /* dst_mask */ | |
319 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
320 | |
321 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
322 | indicate that the branch is not expected to be taken. The lower | |
323 | two bits must be zero. */ | |
324 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
08556813 MM |
325 | 0, /* rightshift */ |
326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 16, /* bitsize */ | |
328 | false, /* pc_relative */ | |
329 | 0, /* bitpos */ | |
bcbe2c71 | 330 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 331 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 332 | "R_PPC_ADDR14_BRNTAKEN",/* name */ |
08556813 MM |
333 | false, /* partial_inplace */ |
334 | 0, /* src_mask */ | |
335 | 0xfffc, /* dst_mask */ | |
336 | false), /* pcrel_offset */ | |
337 | ||
338 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
339 | HOWTO (R_PPC_REL24, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 26, /* bitsize */ | |
343 | true, /* pc_relative */ | |
344 | 0, /* bitpos */ | |
bcbe2c71 | 345 | complain_overflow_signed, /* complain_on_overflow */ |
bd2d10c0 | 346 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 347 | "R_PPC_REL24", /* name */ |
08556813 MM |
348 | false, /* partial_inplace */ |
349 | 0, /* src_mask */ | |
350 | 0x3fffffc, /* dst_mask */ | |
351 | true), /* pcrel_offset */ | |
352 | ||
353 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
354 | HOWTO (R_PPC_REL14, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
358 | true, /* pc_relative */ | |
359 | 0, /* bitpos */ | |
bcbe2c71 | 360 | complain_overflow_signed, /* complain_on_overflow */ |
bd2d10c0 | 361 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 362 | "R_PPC_REL14", /* name */ |
08556813 MM |
363 | false, /* partial_inplace */ |
364 | 0, /* src_mask */ | |
365 | 0xfffc, /* dst_mask */ | |
366 | true), /* pcrel_offset */ | |
bcbe2c71 | 367 | |
08556813 | 368 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
bcbe2c71 MM |
369 | the branch is expected to be taken. The lower two bits must be |
370 | zero. */ | |
08556813 MM |
371 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ |
372 | 0, /* rightshift */ | |
373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
374 | 16, /* bitsize */ | |
375 | true, /* pc_relative */ | |
376 | 0, /* bitpos */ | |
bcbe2c71 | 377 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 378 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 379 | "R_PPC_REL14_BRTAKEN", /* name */ |
08556813 MM |
380 | false, /* partial_inplace */ |
381 | 0, /* src_mask */ | |
382 | 0xfffc, /* dst_mask */ | |
383 | true), /* pcrel_offset */ | |
bcbe2c71 | 384 | |
08556813 | 385 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
bcbe2c71 MM |
386 | the branch is not expected to be taken. The lower two bits must |
387 | be zero. */ | |
08556813 MM |
388 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ |
389 | 0, /* rightshift */ | |
390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
391 | 16, /* bitsize */ | |
392 | true, /* pc_relative */ | |
393 | 0, /* bitpos */ | |
bcbe2c71 | 394 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 395 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 396 | "R_PPC_REL14_BRNTAKEN",/* name */ |
08556813 MM |
397 | false, /* partial_inplace */ |
398 | 0, /* src_mask */ | |
399 | 0xfffc, /* dst_mask */ | |
400 | true), /* pcrel_offset */ | |
bcbe2c71 MM |
401 | |
402 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
403 | symbol. */ | |
08556813 MM |
404 | HOWTO (R_PPC_GOT16, /* type */ |
405 | 0, /* rightshift */ | |
406 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
407 | 16, /* bitsize */ | |
408 | false, /* pc_relative */ | |
409 | 0, /* bitpos */ | |
ede4eed4 | 410 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 411 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 412 | "R_PPC_GOT16", /* name */ |
08556813 MM |
413 | false, /* partial_inplace */ |
414 | 0, /* src_mask */ | |
415 | 0xffff, /* dst_mask */ | |
416 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
417 | |
418 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
419 | the symbol. */ | |
08556813 MM |
420 | HOWTO (R_PPC_GOT16_LO, /* type */ |
421 | 0, /* rightshift */ | |
422 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 16, /* bitsize */ | |
424 | false, /* pc_relative */ | |
425 | 0, /* bitpos */ | |
bcbe2c71 | 426 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 427 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 428 | "R_PPC_GOT16_LO", /* name */ |
08556813 MM |
429 | false, /* partial_inplace */ |
430 | 0, /* src_mask */ | |
431 | 0xffff, /* dst_mask */ | |
432 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
433 | |
434 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
435 | the symbol. */ | |
08556813 MM |
436 | HOWTO (R_PPC_GOT16_HI, /* type */ |
437 | 16, /* rightshift */ | |
438 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 16, /* bitsize */ | |
440 | false, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
bcbe2c71 | 442 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 443 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 444 | "R_PPC_GOT16_HI", /* name */ |
08556813 MM |
445 | false, /* partial_inplace */ |
446 | 0, /* src_mask */ | |
447 | 0xffff, /* dst_mask */ | |
448 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
449 | |
450 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
cf5138e3 | 451 | the symbol. */ |
08556813 MM |
452 | HOWTO (R_PPC_GOT16_HA, /* type */ |
453 | 0, /* rightshift */ | |
454 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
455 | 16, /* bitsize */ | |
456 | false, /* pc_relative */ | |
457 | 0, /* bitpos */ | |
bcbe2c71 | 458 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 459 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 460 | "R_PPC_GOT16_HA", /* name */ |
08556813 MM |
461 | false, /* partial_inplace */ |
462 | 0, /* src_mask */ | |
463 | 0xffff, /* dst_mask */ | |
464 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
465 | |
466 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
467 | entry for the symbol. FIXME: Not supported. */ | |
02f85cda | 468 | HOWTO (R_PPC_PLTREL24, /* type */ |
08556813 MM |
469 | 0, /* rightshift */ |
470 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
471 | 26, /* bitsize */ | |
472 | true, /* pc_relative */ | |
473 | 0, /* bitpos */ | |
474 | complain_overflow_signed, /* complain_on_overflow */ | |
bd2d10c0 | 475 | bfd_elf_generic_reloc, /* special_function */ |
02f85cda | 476 | "R_PPC_PLTREL24", /* name */ |
08556813 MM |
477 | false, /* partial_inplace */ |
478 | 0, /* src_mask */ | |
479 | 0x3fffffc, /* dst_mask */ | |
480 | true), /* pcrel_offset */ | |
bcbe2c71 MM |
481 | |
482 | /* This is used only by the dynamic linker. The symbol should exist | |
483 | both in the object being run and in some shared library. The | |
484 | dynamic linker copies the data addressed by the symbol from the | |
485 | shared library into the object. I have no idea what the purpose | |
486 | of this is. */ | |
08556813 MM |
487 | HOWTO (R_PPC_COPY, /* type */ |
488 | 0, /* rightshift */ | |
489 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
490 | 32, /* bitsize */ | |
491 | false, /* pc_relative */ | |
492 | 0, /* bitpos */ | |
bcbe2c71 | 493 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 494 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 495 | "R_PPC_COPY", /* name */ |
08556813 MM |
496 | false, /* partial_inplace */ |
497 | 0, /* src_mask */ | |
498 | 0, /* dst_mask */ | |
499 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
500 | |
501 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
502 | entries. */ | |
08556813 MM |
503 | HOWTO (R_PPC_GLOB_DAT, /* type */ |
504 | 0, /* rightshift */ | |
505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
506 | 32, /* bitsize */ | |
507 | false, /* pc_relative */ | |
508 | 0, /* bitpos */ | |
bcbe2c71 | 509 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 510 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 511 | "R_PPC_GLOB_DAT", /* name */ |
08556813 MM |
512 | false, /* partial_inplace */ |
513 | 0, /* src_mask */ | |
514 | 0xffffffff, /* dst_mask */ | |
515 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
516 | |
517 | /* Marks a procedure linkage table entry for a symbol. */ | |
08556813 MM |
518 | HOWTO (R_PPC_JMP_SLOT, /* type */ |
519 | 0, /* rightshift */ | |
520 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
521 | 32, /* bitsize */ | |
522 | false, /* pc_relative */ | |
523 | 0, /* bitpos */ | |
bcbe2c71 | 524 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 525 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 526 | "R_PPC_JMP_SLOT", /* name */ |
08556813 MM |
527 | false, /* partial_inplace */ |
528 | 0, /* src_mask */ | |
529 | 0, /* dst_mask */ | |
530 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
531 | |
532 | /* Used only by the dynamic linker. When the object is run, this | |
533 | longword is set to the load address of the object, plus the | |
534 | addend. */ | |
08556813 MM |
535 | HOWTO (R_PPC_RELATIVE, /* type */ |
536 | 0, /* rightshift */ | |
537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 32, /* bitsize */ | |
539 | false, /* pc_relative */ | |
540 | 0, /* bitpos */ | |
bcbe2c71 | 541 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 542 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 543 | "R_PPC_RELATIVE", /* name */ |
08556813 MM |
544 | false, /* partial_inplace */ |
545 | 0, /* src_mask */ | |
546 | 0xffffffff, /* dst_mask */ | |
547 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
548 | |
549 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
550 | object rather than the final value. Normally used for | |
551 | _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */ | |
08556813 MM |
552 | HOWTO (R_PPC_LOCAL24PC, /* type */ |
553 | 0, /* rightshift */ | |
554 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
555 | 26, /* bitsize */ | |
556 | true, /* pc_relative */ | |
557 | 0, /* bitpos */ | |
bcbe2c71 | 558 | complain_overflow_signed, /* complain_on_overflow */ |
bd2d10c0 | 559 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 560 | "R_PPC_LOCAL24PC", /* name */ |
08556813 MM |
561 | false, /* partial_inplace */ |
562 | 0, /* src_mask */ | |
563 | 0x3fffffc, /* dst_mask */ | |
564 | true), /* pcrel_offset */ | |
bcbe2c71 MM |
565 | |
566 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
08556813 MM |
567 | HOWTO (R_PPC_UADDR32, /* type */ |
568 | 0, /* rightshift */ | |
569 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
570 | 32, /* bitsize */ | |
571 | false, /* pc_relative */ | |
572 | 0, /* bitpos */ | |
bcbe2c71 | 573 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 574 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 575 | "R_PPC_UADDR32", /* name */ |
08556813 MM |
576 | false, /* partial_inplace */ |
577 | 0, /* src_mask */ | |
578 | 0xffffffff, /* dst_mask */ | |
579 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
580 | |
581 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
08556813 MM |
582 | HOWTO (R_PPC_UADDR16, /* type */ |
583 | 0, /* rightshift */ | |
584 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
585 | 16, /* bitsize */ | |
586 | false, /* pc_relative */ | |
587 | 0, /* bitpos */ | |
bcbe2c71 | 588 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 589 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 590 | "R_PPC_UADDR16", /* name */ |
08556813 MM |
591 | false, /* partial_inplace */ |
592 | 0, /* src_mask */ | |
593 | 0xffff, /* dst_mask */ | |
594 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
595 | |
596 | /* 32-bit PC relative */ | |
597 | HOWTO (R_PPC_REL32, /* type */ | |
08556813 MM |
598 | 0, /* rightshift */ |
599 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
600 | 32, /* bitsize */ | |
601 | true, /* pc_relative */ | |
602 | 0, /* bitpos */ | |
bcbe2c71 | 603 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 604 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 605 | "R_PPC_REL32", /* name */ |
08556813 MM |
606 | false, /* partial_inplace */ |
607 | 0, /* src_mask */ | |
608 | 0xffffffff, /* dst_mask */ | |
bcbe2c71 MM |
609 | true), /* pcrel_offset */ |
610 | ||
611 | /* 32-bit relocation to the symbol's procedure linkage table. | |
612 | FIXEME: not supported. */ | |
613 | HOWTO (R_PPC_PLT32, /* type */ | |
08556813 MM |
614 | 0, /* rightshift */ |
615 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
616 | 32, /* bitsize */ | |
617 | false, /* pc_relative */ | |
618 | 0, /* bitpos */ | |
bcbe2c71 | 619 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 620 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 621 | "R_PPC_PLT32", /* name */ |
08556813 MM |
622 | false, /* partial_inplace */ |
623 | 0, /* src_mask */ | |
624 | 0, /* dst_mask */ | |
625 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
626 | |
627 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
628 | FIXEME: not supported. */ | |
629 | HOWTO (R_PPC_PLTREL32, /* type */ | |
08556813 MM |
630 | 0, /* rightshift */ |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
633 | true, /* pc_relative */ | |
634 | 0, /* bitpos */ | |
bcbe2c71 | 635 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 636 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 637 | "R_PPC_PLTREL32", /* name */ |
08556813 MM |
638 | false, /* partial_inplace */ |
639 | 0, /* src_mask */ | |
640 | 0, /* dst_mask */ | |
bcbe2c71 MM |
641 | true), /* pcrel_offset */ |
642 | ||
643 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
644 | the symbol. */ | |
08556813 MM |
645 | HOWTO (R_PPC_PLT16_LO, /* type */ |
646 | 0, /* rightshift */ | |
647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
648 | 16, /* bitsize */ | |
649 | false, /* pc_relative */ | |
650 | 0, /* bitpos */ | |
bcbe2c71 | 651 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 652 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 653 | "R_PPC_PLT16_LO", /* name */ |
08556813 MM |
654 | false, /* partial_inplace */ |
655 | 0, /* src_mask */ | |
656 | 0xffff, /* dst_mask */ | |
657 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
658 | |
659 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
660 | the symbol. */ | |
08556813 MM |
661 | HOWTO (R_PPC_PLT16_HI, /* type */ |
662 | 16, /* rightshift */ | |
663 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 16, /* bitsize */ | |
665 | false, /* pc_relative */ | |
666 | 0, /* bitpos */ | |
bcbe2c71 | 667 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 668 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 669 | "R_PPC_PLT16_HI", /* name */ |
08556813 MM |
670 | false, /* partial_inplace */ |
671 | 0, /* src_mask */ | |
672 | 0xffff, /* dst_mask */ | |
673 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
674 | |
675 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
08556813 MM |
676 | the symbol. FIXME: Not supported. */ |
677 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
678 | 0, /* rightshift */ | |
679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
680 | 16, /* bitsize */ | |
681 | false, /* pc_relative */ | |
682 | 0, /* bitpos */ | |
bcbe2c71 | 683 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 684 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 685 | "R_PPC_PLT16_HA", /* name */ |
08556813 MM |
686 | false, /* partial_inplace */ |
687 | 0, /* src_mask */ | |
688 | 0xffff, /* dst_mask */ | |
689 | false), /* pcrel_offset */ | |
bcbe2c71 | 690 | |
4500a112 | 691 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with |
cf5138e3 | 692 | small data items. */ |
02f85cda | 693 | HOWTO (R_PPC_SDAREL16, /* type */ |
08556813 MM |
694 | 0, /* rightshift */ |
695 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 16, /* bitsize */ | |
697 | false, /* pc_relative */ | |
698 | 0, /* bitpos */ | |
dd82c578 | 699 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 700 | bfd_elf_generic_reloc, /* special_function */ |
02f85cda | 701 | "R_PPC_SDAREL16", /* name */ |
08556813 MM |
702 | false, /* partial_inplace */ |
703 | 0, /* src_mask */ | |
704 | 0xffff, /* dst_mask */ | |
705 | false), /* pcrel_offset */ | |
bcbe2c71 | 706 | |
cf5138e3 | 707 | /* 32-bit section relative relocation. */ |
bcbe2c71 | 708 | HOWTO (R_PPC_SECTOFF, /* type */ |
08556813 MM |
709 | 0, /* rightshift */ |
710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 32, /* bitsize */ | |
712 | true, /* pc_relative */ | |
713 | 0, /* bitpos */ | |
bcbe2c71 | 714 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 715 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 716 | "R_PPC_SECTOFF", /* name */ |
08556813 MM |
717 | false, /* partial_inplace */ |
718 | 0, /* src_mask */ | |
719 | 0, /* dst_mask */ | |
bcbe2c71 MM |
720 | true), /* pcrel_offset */ |
721 | ||
cf5138e3 | 722 | /* 16-bit lower half section relative relocation. */ |
08556813 MM |
723 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
724 | 0, /* rightshift */ | |
725 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
726 | 16, /* bitsize */ | |
727 | false, /* pc_relative */ | |
728 | 0, /* bitpos */ | |
bcbe2c71 | 729 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 730 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 731 | "R_PPC_SECTOFF_LO", /* name */ |
08556813 MM |
732 | false, /* partial_inplace */ |
733 | 0, /* src_mask */ | |
734 | 0xffff, /* dst_mask */ | |
735 | false), /* pcrel_offset */ | |
bcbe2c71 | 736 | |
cf5138e3 | 737 | /* 16-bit upper half section relative relocation. */ |
bcbe2c71 | 738 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
08556813 MM |
739 | 16, /* rightshift */ |
740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
741 | 16, /* bitsize */ | |
742 | false, /* pc_relative */ | |
743 | 0, /* bitpos */ | |
bcbe2c71 | 744 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 745 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 746 | "R_PPC_SECTOFF_HI", /* name */ |
08556813 MM |
747 | false, /* partial_inplace */ |
748 | 0, /* src_mask */ | |
749 | 0xffff, /* dst_mask */ | |
750 | false), /* pcrel_offset */ | |
bcbe2c71 | 751 | |
cf5138e3 | 752 | /* 16-bit upper half adjusted section relative relocation. */ |
bcbe2c71 | 753 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
08556813 MM |
754 | 0, /* rightshift */ |
755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
756 | 16, /* bitsize */ | |
757 | false, /* pc_relative */ | |
758 | 0, /* bitpos */ | |
bcbe2c71 | 759 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 760 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 761 | "R_PPC_SECTOFF_HA", /* name */ |
08556813 MM |
762 | false, /* partial_inplace */ |
763 | 0, /* src_mask */ | |
764 | 0xffff, /* dst_mask */ | |
765 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
766 | |
767 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
768 | in the SVR4 ELF ABI. */ | |
769 | ||
770 | /* 32 bit value resulting from the addend minus the symbol */ | |
771 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
08556813 MM |
772 | 0, /* rightshift */ |
773 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
774 | 32, /* bitsize */ | |
775 | false, /* pc_relative */ | |
776 | 0, /* bitpos */ | |
bcbe2c71 | 777 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 778 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 779 | "R_PPC_EMB_NADDR32", /* name */ |
08556813 MM |
780 | false, /* partial_inplace */ |
781 | 0, /* src_mask */ | |
782 | 0xffffffff, /* dst_mask */ | |
783 | false), /* pcrel_offset */ | |
bcbe2c71 | 784 | |
4500a112 | 785 | /* 16 bit value resulting from the addend minus the symbol */ |
bcbe2c71 | 786 | HOWTO (R_PPC_EMB_NADDR16, /* type */ |
08556813 MM |
787 | 0, /* rightshift */ |
788 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
789 | 16, /* bitsize */ | |
790 | false, /* pc_relative */ | |
791 | 0, /* bitpos */ | |
bcbe2c71 | 792 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 793 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 794 | "R_PPC_EMB_NADDR16", /* name */ |
08556813 MM |
795 | false, /* partial_inplace */ |
796 | 0, /* src_mask */ | |
797 | 0xffff, /* dst_mask */ | |
798 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
799 | |
800 | /* 16 bit value resulting from the addend minus the symbol */ | |
801 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
08556813 MM |
802 | 0, /* rightshift */ |
803 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
804 | 16, /* bitsize */ | |
805 | false, /* pc_relative */ | |
806 | 0, /* bitpos */ | |
bcbe2c71 | 807 | complain_overflow_dont,/* complain_on_overflow */ |
bd2d10c0 | 808 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 809 | "R_PPC_EMB_ADDR16_LO", /* name */ |
08556813 MM |
810 | false, /* partial_inplace */ |
811 | 0, /* src_mask */ | |
812 | 0xffff, /* dst_mask */ | |
813 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
814 | |
815 | /* The high order 16 bits of the addend minus the symbol */ | |
816 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
08556813 MM |
817 | 16, /* rightshift */ |
818 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
819 | 16, /* bitsize */ | |
820 | false, /* pc_relative */ | |
821 | 0, /* bitpos */ | |
bcbe2c71 | 822 | complain_overflow_dont, /* complain_on_overflow */ |
bd2d10c0 | 823 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 824 | "R_PPC_EMB_NADDR16_HI", /* name */ |
08556813 MM |
825 | false, /* partial_inplace */ |
826 | 0, /* src_mask */ | |
827 | 0xffff, /* dst_mask */ | |
828 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
829 | |
830 | /* The high order 16 bits of the result of the addend minus the address, | |
831 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
832 | is negative. */ | |
833 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
08556813 MM |
834 | 16, /* rightshift */ |
835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
836 | 16, /* bitsize */ | |
837 | false, /* pc_relative */ | |
838 | 0, /* bitpos */ | |
bcbe2c71 | 839 | complain_overflow_dont, /* complain_on_overflow */ |
bd2d10c0 | 840 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 841 | "R_PPC_EMB_NADDR16_HA", /* name */ |
08556813 MM |
842 | false, /* partial_inplace */ |
843 | 0, /* src_mask */ | |
844 | 0xffff, /* dst_mask */ | |
845 | false), /* pcrel_offset */ | |
846 | ||
4500a112 MM |
847 | /* 16 bit value resulting from allocating a 4 byte word to hold an |
848 | address in the .sdata section, and returning the offset from | |
849 | _SDA_BASE_ for that relocation */ | |
850 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
851 | 0, /* rightshift */ | |
852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 16, /* bitsize */ | |
854 | false, /* pc_relative */ | |
855 | 0, /* bitpos */ | |
856 | complain_overflow_bitfield, /* complain_on_overflow */ | |
857 | bfd_elf_generic_reloc, /* special_function */ | |
858 | "R_PPC_EMB_SDAI16", /* name */ | |
859 | false, /* partial_inplace */ | |
860 | 0, /* src_mask */ | |
861 | 0xffff, /* dst_mask */ | |
862 | false), /* pcrel_offset */ | |
863 | ||
864 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
865 | address in the .sdata2 section, and returning the offset from | |
866 | _SDA2_BASE_ for that relocation */ | |
867 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
868 | 0, /* rightshift */ | |
869 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
870 | 16, /* bitsize */ | |
871 | false, /* pc_relative */ | |
872 | 0, /* bitpos */ | |
873 | complain_overflow_bitfield, /* complain_on_overflow */ | |
874 | bfd_elf_generic_reloc, /* special_function */ | |
875 | "R_PPC_EMB_SDA2I16", /* name */ | |
876 | false, /* partial_inplace */ | |
877 | 0, /* src_mask */ | |
878 | 0xffff, /* dst_mask */ | |
879 | false), /* pcrel_offset */ | |
880 | ||
881 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
cf5138e3 | 882 | small data items. */ |
4500a112 MM |
883 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ |
884 | 0, /* rightshift */ | |
885 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
886 | 16, /* bitsize */ | |
887 | false, /* pc_relative */ | |
888 | 0, /* bitpos */ | |
889 | complain_overflow_signed, /* complain_on_overflow */ | |
890 | bfd_elf_generic_reloc, /* special_function */ | |
891 | "R_PPC_EMB_SDA2REL", /* name */ | |
892 | false, /* partial_inplace */ | |
893 | 0, /* src_mask */ | |
894 | 0xffff, /* dst_mask */ | |
895 | false), /* pcrel_offset */ | |
896 | ||
897 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
898 | signed offset from the appropriate base, and filling in the register | |
899 | field with the appropriate register (0, 2, or 13). */ | |
900 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
901 | 0, /* rightshift */ | |
cf5138e3 | 902 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
4500a112 MM |
903 | 16, /* bitsize */ |
904 | false, /* pc_relative */ | |
905 | 0, /* bitpos */ | |
906 | complain_overflow_signed, /* complain_on_overflow */ | |
907 | bfd_elf_generic_reloc, /* special_function */ | |
908 | "R_PPC_EMB_SDA21", /* name */ | |
909 | false, /* partial_inplace */ | |
910 | 0, /* src_mask */ | |
911 | 0xffff, /* dst_mask */ | |
912 | false), /* pcrel_offset */ | |
913 | ||
914 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
915 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
916 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
917 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
918 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
919 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
920 | ||
921 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
922 | in the 16 bit signed offset from the appropriate base, and filling in the | |
923 | register field with the appropriate register (0, 2, or 13). */ | |
924 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
925 | 0, /* rightshift */ | |
926 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
927 | 16, /* bitsize */ | |
928 | true, /* pc_relative */ | |
929 | 0, /* bitpos */ | |
930 | complain_overflow_signed, /* complain_on_overflow */ | |
931 | bfd_elf_generic_reloc, /* special_function */ | |
932 | "R_PPC_EMB_RELSDA", /* name */ | |
933 | false, /* partial_inplace */ | |
934 | 0, /* src_mask */ | |
935 | 0xffff, /* dst_mask */ | |
936 | false), /* pcrel_offset */ | |
937 | ||
08556813 MM |
938 | /* Phony reloc to handle AIX style TOC entries */ |
939 | HOWTO (R_PPC_TOC16, /* type */ | |
940 | 0, /* rightshift */ | |
941 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
942 | 16, /* bitsize */ | |
943 | false, /* pc_relative */ | |
944 | 0, /* bitpos */ | |
945 | complain_overflow_signed, /* complain_on_overflow */ | |
07a159db | 946 | bfd_elf_generic_reloc, /* special_function */ |
08556813 MM |
947 | "R_PPC_TOC16", /* name */ |
948 | false, /* partial_inplace */ | |
949 | 0, /* src_mask */ | |
950 | 0xffff, /* dst_mask */ | |
951 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
952 | }; |
953 | ||
ede4eed4 KR |
954 | \f |
955 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
956 | ||
957 | static void | |
958 | ppc_elf_howto_init () | |
959 | { | |
960 | unsigned int i, type; | |
961 | ||
962 | for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++) | |
963 | { | |
964 | type = ppc_elf_howto_raw[i].type; | |
965 | BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0])); | |
966 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
967 | } | |
968 | } | |
969 | ||
970 | \f | |
971 | static reloc_howto_type * | |
972 | ppc_elf_reloc_type_lookup (abfd, code) | |
973 | bfd *abfd; | |
974 | bfd_reloc_code_real_type code; | |
975 | { | |
08556813 | 976 | enum ppc_reloc_type ppc_reloc = R_PPC_NONE; |
02f85cda | 977 | |
ede4eed4 KR |
978 | if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ |
979 | ppc_elf_howto_init (); | |
980 | ||
981 | switch ((int)code) | |
982 | { | |
02f85cda MM |
983 | default: |
984 | return (reloc_howto_type *)NULL; | |
985 | ||
986 | case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break; | |
987 | case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break; | |
988 | case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break; | |
989 | case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break; | |
990 | case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break; | |
991 | case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break; | |
992 | case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break; | |
993 | case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break; | |
994 | case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break; | |
995 | case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break; | |
996 | case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break; | |
997 | case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break; | |
998 | case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break; | |
999 | case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break; | |
08556813 | 1000 | case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break; |
02f85cda MM |
1001 | case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break; |
1002 | case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break; | |
1003 | case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break; | |
1004 | case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break; | |
1005 | case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break; | |
1006 | case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break; | |
1007 | case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break; | |
1008 | case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break; | |
1009 | case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break; | |
1010 | case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break; | |
1011 | case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break; | |
1012 | case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break; | |
1013 | case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break; | |
1014 | case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break; | |
1015 | case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break; | |
1016 | case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break; | |
1017 | case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break; | |
1018 | case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break; | |
1019 | case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break; | |
08556813 | 1020 | case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break; |
4500a112 MM |
1021 | case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break; |
1022 | case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break; | |
1023 | case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break; | |
1024 | case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break; | |
1025 | case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break; | |
1026 | case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break; | |
1027 | case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break; | |
1028 | case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break; | |
1029 | case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break; | |
1030 | case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break; | |
1031 | case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break; | |
1032 | case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break; | |
1033 | case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break; | |
1034 | case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break; | |
1035 | case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break; | |
1036 | case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break; | |
ede4eed4 KR |
1037 | } |
1038 | ||
02f85cda | 1039 | return ppc_elf_howto_table[ (int)ppc_reloc ]; |
ede4eed4 KR |
1040 | }; |
1041 | ||
1042 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1043 | ||
1044 | static void | |
1045 | ppc_elf_info_to_howto (abfd, cache_ptr, dst) | |
1046 | bfd *abfd; | |
1047 | arelent *cache_ptr; | |
1048 | Elf32_Internal_Rela *dst; | |
1049 | { | |
1050 | if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ | |
1051 | ppc_elf_howto_init (); | |
1052 | ||
1053 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1054 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1055 | } | |
1056 | ||
dab45734 ILT |
1057 | /* Handle the R_PPC_ADDR16_HA reloc. */ |
1058 | ||
1059 | static bfd_reloc_status_type | |
1060 | ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1061 | output_bfd, error_message) | |
1062 | bfd *abfd; | |
1063 | arelent *reloc_entry; | |
1064 | asymbol *symbol; | |
1065 | PTR data; | |
1066 | asection *input_section; | |
1067 | bfd *output_bfd; | |
1068 | char **error_message; | |
1069 | { | |
1070 | bfd_vma relocation; | |
1071 | ||
1072 | if (output_bfd != NULL) | |
1073 | { | |
1074 | reloc_entry->address += input_section->output_offset; | |
1075 | return bfd_reloc_ok; | |
1076 | } | |
1077 | ||
1078 | if (reloc_entry->address > input_section->_cooked_size) | |
1079 | return bfd_reloc_outofrange; | |
1080 | ||
1081 | if (bfd_is_com_section (symbol->section)) | |
1082 | relocation = 0; | |
1083 | else | |
1084 | relocation = symbol->value; | |
1085 | ||
1086 | relocation += symbol->section->output_section->vma; | |
1087 | relocation += symbol->section->output_offset; | |
1088 | relocation += reloc_entry->addend; | |
1089 | ||
1090 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1091 | ||
1092 | return bfd_reloc_continue; | |
1093 | } | |
1094 | ||
ede4eed4 KR |
1095 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
1096 | ||
1097 | static boolean | |
1098 | ppc_elf_set_private_flags (abfd, flags) | |
1099 | bfd *abfd; | |
1100 | flagword flags; | |
1101 | { | |
761f377f | 1102 | BFD_ASSERT (!elf_flags_init (abfd) |
ede4eed4 KR |
1103 | || elf_elfheader (abfd)->e_flags == flags); |
1104 | ||
1105 | elf_elfheader (abfd)->e_flags = flags; | |
761f377f | 1106 | elf_flags_init (abfd) = true; |
ede4eed4 KR |
1107 | return true; |
1108 | } | |
1109 | ||
1110 | /* Copy backend specific data from one object module to another */ | |
1111 | static boolean | |
1112 | ppc_elf_copy_private_bfd_data (ibfd, obfd) | |
1113 | bfd *ibfd; | |
1114 | bfd *obfd; | |
1115 | { | |
e7bab9df MM |
1116 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1117 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
ede4eed4 KR |
1118 | return true; |
1119 | ||
761f377f | 1120 | BFD_ASSERT (!elf_flags_init (obfd) |
ede4eed4 KR |
1121 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); |
1122 | ||
1123 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
761f377f | 1124 | elf_flags_init (obfd) = true; |
ede4eed4 KR |
1125 | return true; |
1126 | } | |
1127 | ||
1128 | /* Merge backend specific data from an object file to the output | |
1129 | object file when linking */ | |
1130 | static boolean | |
1131 | ppc_elf_merge_private_bfd_data (ibfd, obfd) | |
1132 | bfd *ibfd; | |
1133 | bfd *obfd; | |
1134 | { | |
1135 | flagword old_flags; | |
1136 | flagword new_flags; | |
08556813 | 1137 | boolean error; |
ede4eed4 KR |
1138 | |
1139 | /* Check if we have the same endianess */ | |
07a159db MM |
1140 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder |
1141 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
ede4eed4 | 1142 | { |
7a7fbffb | 1143 | (*_bfd_error_handler) |
07a159db | 1144 | ("%s: compiled for a %s endian system and target is %s endian", |
7a7fbffb | 1145 | bfd_get_filename (ibfd), |
08556813 MM |
1146 | bfd_big_endian (ibfd) ? "big" : "little", |
1147 | bfd_big_endian (obfd) ? "big" : "little"); | |
ede4eed4 KR |
1148 | |
1149 | bfd_set_error (bfd_error_wrong_format); | |
1150 | return false; | |
1151 | } | |
1152 | ||
e7bab9df MM |
1153 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1154 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
ede4eed4 KR |
1155 | return true; |
1156 | ||
1157 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1158 | old_flags = elf_elfheader (obfd)->e_flags; | |
761f377f | 1159 | if (!elf_flags_init (obfd)) /* First call, no flags set */ |
ede4eed4 | 1160 | { |
761f377f | 1161 | elf_flags_init (obfd) = true; |
ede4eed4 KR |
1162 | elf_elfheader (obfd)->e_flags = new_flags; |
1163 | } | |
1164 | ||
1165 | else if (new_flags == old_flags) /* Compatible flags are ok */ | |
1166 | ; | |
1167 | ||
1168 | else /* Incompatible flags */ | |
1169 | { | |
dd82c578 MM |
1170 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked |
1171 | with either. */ | |
08556813 | 1172 | error = false; |
dd82c578 MM |
1173 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 |
1174 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
ede4eed4 | 1175 | { |
08556813 | 1176 | error = true; |
7a7fbffb | 1177 | (*_bfd_error_handler) |
07a159db | 1178 | ("%s: compiled with -mrelocatable and linked with modules compiled normally", |
7a7fbffb | 1179 | bfd_get_filename (ibfd)); |
ede4eed4 | 1180 | } |
08eb30b6 | 1181 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 |
dd82c578 | 1182 | && (old_flags & EF_PPC_RELOCATABLE) != 0) |
ede4eed4 | 1183 | { |
08556813 | 1184 | error = true; |
7a7fbffb | 1185 | (*_bfd_error_handler) |
07a159db | 1186 | ("%s: compiled normally and linked with modules compiled with -mrelocatable", |
7a7fbffb | 1187 | bfd_get_filename (ibfd)); |
ede4eed4 | 1188 | } |
e7bab9df MM |
1189 | /* If -mrelocatable-lib is linked with an object without -mrelocatable-lib, turn off |
1190 | the -mrelocatable-lib, since at least one module isn't relocatable. */ | |
1191 | else if ((old_flags & EF_PPC_RELOCATABLE_LIB) != 0 | |
1192 | && (new_flags & EF_PPC_RELOCATABLE_LIB) == 0) | |
1193 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
dd82c578 | 1194 | |
ede4eed4 | 1195 | |
3cbe19d2 MM |
1196 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */ |
1197 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
1198 | ||
1199 | new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
1200 | old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
ede4eed4 KR |
1201 | |
1202 | /* Warn about any other mismatches */ | |
1203 | if (new_flags != old_flags) | |
08556813 MM |
1204 | { |
1205 | error = true; | |
1206 | (*_bfd_error_handler) | |
07a159db | 1207 | ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", |
08556813 MM |
1208 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); |
1209 | } | |
ede4eed4 | 1210 | |
08556813 MM |
1211 | if (error) |
1212 | { | |
1213 | bfd_set_error (bfd_error_bad_value); | |
1214 | return false; | |
1215 | } | |
ede4eed4 KR |
1216 | } |
1217 | ||
1218 | return true; | |
1219 | } | |
1220 | ||
83f4323e MM |
1221 | \f |
1222 | /* Handle a PowerPC specific section when reading an object file. This | |
1223 | is called when elfcode.h finds a section with an unknown type. */ | |
1224 | ||
1225 | static boolean | |
1226 | ppc_elf_section_from_shdr (abfd, hdr, name) | |
1227 | bfd *abfd; | |
1228 | Elf32_Internal_Shdr *hdr; | |
1229 | char *name; | |
1230 | { | |
1231 | asection *newsect; | |
1232 | flagword flags; | |
1233 | ||
1234 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1235 | return false; | |
1236 | ||
1237 | newsect = hdr->bfd_section; | |
1238 | flags = bfd_get_section_flags (abfd, newsect); | |
1239 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1240 | flags |= SEC_EXCLUDE; | |
1241 | ||
1242 | if (hdr->sh_type == SHT_ORDERED) | |
1243 | flags |= SEC_SORT_ENTRIES; | |
1244 | ||
1245 | bfd_set_section_flags (abfd, newsect, flags); | |
1246 | return true; | |
1247 | } | |
1248 | ||
57081126 MM |
1249 | \f |
1250 | /* Set up any other section flags and such that may be necessary. */ | |
1251 | ||
1252 | boolean | |
1253 | ppc_elf_fake_sections (abfd, shdr, asect) | |
1254 | bfd *abfd; | |
1255 | Elf32_Internal_Shdr *shdr; | |
1256 | asection *asect; | |
1257 | { | |
1258 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
1259 | shdr->sh_flags |= SHF_EXCLUDE; | |
1260 | ||
1261 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
1262 | shdr->sh_type = SHT_ORDERED; | |
3f7ca26b MM |
1263 | |
1264 | return true; | |
57081126 MM |
1265 | } |
1266 | ||
1c3a295b | 1267 | \f |
3b3753b8 MM |
1268 | /* Create a special linker section */ |
1269 | static elf_linker_section_t * | |
1270 | ppc_elf_create_linker_section (abfd, info, which) | |
1c3a295b MM |
1271 | bfd *abfd; |
1272 | struct bfd_link_info *info; | |
3b3753b8 | 1273 | enum elf_linker_section_enum which; |
1c3a295b | 1274 | { |
3b3753b8 MM |
1275 | bfd *dynobj = elf_hash_table (info)->dynobj; |
1276 | elf_linker_section_t *lsect; | |
1c3a295b | 1277 | |
3b3753b8 MM |
1278 | /* Record the first bfd section that needs the special section */ |
1279 | if (!dynobj) | |
1280 | dynobj = elf_hash_table (info)->dynobj = abfd; | |
1c3a295b | 1281 | |
3b3753b8 MM |
1282 | /* If this is the first time, create the section */ |
1283 | lsect = elf_linker_section (dynobj, which); | |
1284 | if (!lsect) | |
1c3a295b | 1285 | { |
3b3753b8 MM |
1286 | elf_linker_section_t defaults; |
1287 | static elf_linker_section_t zero_section; | |
1288 | ||
1289 | defaults = zero_section; | |
1290 | defaults.which = which; | |
1291 | defaults.hole_written_p = false; | |
1292 | defaults.alignment = 2; | |
1293 | defaults.flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
1294 | ||
1295 | switch (which) | |
1296 | { | |
1297 | default: | |
1298 | (*_bfd_error_handler) ("%s: Unknown special linker type %d", | |
1299 | bfd_get_filename (abfd), | |
1300 | (int)which); | |
1301 | ||
1302 | bfd_set_error (bfd_error_bad_value); | |
1303 | return (elf_linker_section_t *)0; | |
1304 | ||
1305 | case LINKER_SECTION_GOT: /* .got section */ | |
1306 | defaults.name = ".got"; | |
1307 | defaults.rel_name = ".rela.got"; | |
1308 | defaults.sym_name = "_GLOBAL_OFFSET_TABLE_"; | |
1309 | defaults.max_hole_offset = 32764; | |
1310 | defaults.hole_size = 16; | |
1311 | defaults.sym_offset = 4; | |
1312 | break; | |
1313 | ||
3f7ca26b MM |
1314 | case LINKER_SECTION_PLT: /* .plt section */ |
1315 | defaults.name = ".plt"; | |
1316 | defaults.rel_name = ".rela.plt"; | |
1317 | defaults.sym_name = (char *)0; | |
1318 | defaults.max_hole_offset = 0; | |
1319 | defaults.hole_size = 0; | |
1320 | defaults.sym_offset = 0; | |
1321 | defaults.flags &= ~SEC_LOAD; | |
1322 | break; | |
1323 | ||
3b3753b8 MM |
1324 | case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ |
1325 | defaults.name = ".sdata"; | |
1326 | defaults.rel_name = ".rela.sdata"; | |
1327 | defaults.bss_name = ".sbss"; | |
1328 | defaults.sym_name = "_SDA_BASE_"; | |
05f927dd | 1329 | defaults.sym_offset = 32768; |
3b3753b8 MM |
1330 | break; |
1331 | ||
1332 | case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ | |
1333 | defaults.name = ".sdata2"; | |
1334 | defaults.rel_name = ".rela.sdata2"; | |
1335 | defaults.bss_name = ".sbss2"; | |
1336 | defaults.sym_name = "_SDA2_BASE_"; | |
05f927dd | 1337 | defaults.sym_offset = 32768; |
3f7ca26b | 1338 | defaults.flags |= SEC_READONLY; |
3b3753b8 MM |
1339 | break; |
1340 | } | |
1341 | ||
1342 | lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); | |
1c3a295b MM |
1343 | } |
1344 | ||
3b3753b8 | 1345 | return lsect; |
1c3a295b MM |
1346 | } |
1347 | ||
3f7ca26b MM |
1348 | \f |
1349 | /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up | |
1350 | the number of section headers. */ | |
1351 | ||
1352 | static int | |
1353 | ppc_elf_additional_program_headers (abfd) | |
1354 | bfd *abfd; | |
1355 | { | |
1356 | asection *s; | |
1357 | int ret; | |
1358 | ||
1359 | ret = 0; | |
1360 | ||
1361 | s = bfd_get_section_by_name (abfd, ".interp"); | |
1362 | if (s != NULL) | |
1363 | ++ret; | |
1364 | ||
1365 | s = bfd_get_section_by_name (abfd, ".sbss2"); | |
1366 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) | |
1367 | ++ret; | |
1368 | ||
1369 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); | |
1370 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) | |
1371 | ++ret; | |
1372 | ||
1373 | return ret; | |
1374 | } | |
1375 | ||
1376 | /* Modify the segment map if needed */ | |
1377 | ||
1378 | static boolean | |
1379 | ppc_elf_modify_segment_map (abfd) | |
1380 | bfd *abfd; | |
1381 | { | |
1382 | return true; | |
1383 | } | |
08556813 MM |
1384 | \f |
1385 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1386 | regular object. The current definition is in some section of the | |
1387 | dynamic object, but we're not including those sections. We have to | |
1388 | change the definition to something the rest of the link can | |
1389 | understand. */ | |
1390 | ||
1391 | static boolean | |
1392 | ppc_elf_adjust_dynamic_symbol (info, h) | |
1393 | struct bfd_link_info *info; | |
1394 | struct elf_link_hash_entry *h; | |
1395 | { | |
3f7ca26b MM |
1396 | bfd *dynobj = elf_hash_table (info)->dynobj; |
1397 | asection *s; | |
1398 | unsigned int power_of_two; | |
1399 | bfd_vma plt_offset; | |
1400 | ||
08556813 | 1401 | #ifdef DEBUG |
3f7ca26b | 1402 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string); |
08556813 | 1403 | #endif |
3f7ca26b MM |
1404 | |
1405 | /* Make sure we know what is going on here. */ | |
1406 | BFD_ASSERT (dynobj != NULL | |
1407 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
1408 | || h->weakdef != NULL | |
1409 | || ((h->elf_link_hash_flags | |
1410 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1411 | && (h->elf_link_hash_flags | |
1412 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
1413 | && (h->elf_link_hash_flags | |
1414 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
1415 | ||
1416 | ||
1417 | /* If this is a function, put it in the procedure linkage table. We | |
1418 | will fill in the contents of the procedure linkage table later, | |
1419 | when we know the address of the .got section. */ | |
1420 | if (h->type == STT_FUNC | |
1421 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1422 | { | |
1423 | if (! info->shared | |
1424 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
1425 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) | |
1426 | { | |
1427 | /* This case can occur if we saw a PLT32 reloc in an input | |
1428 | file, but the symbol was never referred to by a dynamic | |
1429 | object. In such a case, we don't actually need to build | |
1430 | a procedure linkage table, and we can just do a PC32 | |
1431 | reloc instead. */ | |
1432 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
1433 | return true; | |
1434 | } | |
1435 | ||
1436 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1437 | if (h->dynindx == -1) | |
1438 | { | |
1439 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1440 | return false; | |
1441 | } | |
1442 | ||
1443 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1444 | BFD_ASSERT (s != NULL); | |
1445 | ||
1446 | /* If this is the first .plt entry, make room for the special | |
1447 | first entry. */ | |
1448 | if (s->_raw_size == 0) | |
1449 | s->_raw_size += PLT_INITIAL_ENTRY_SIZE; | |
1450 | ||
1451 | /* The PowerPC PLT is actually composed of two parts, the first part | |
1452 | is 2 words (for a load and a jump), and then there is a remaining | |
1453 | word available at the end. */ | |
1454 | plt_offset = (PLT_INITIAL_ENTRY_SIZE | |
1455 | + 8 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE)); | |
1456 | ||
1457 | /* If this symbol is not defined in a regular file, and we are | |
1458 | not generating a shared library, then set the symbol to this | |
1459 | location in the .plt. This is required to make function | |
1460 | pointers compare as equal between the normal executable and | |
1461 | the shared library. */ | |
1462 | if (! info->shared | |
1463 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1464 | { | |
1465 | h->root.u.def.section = s; | |
1466 | h->root.u.def.value = plt_offset; | |
1467 | } | |
1468 | ||
1469 | h->plt_offset = plt_offset; | |
1470 | ||
1471 | /* Make room for this entry. */ | |
1472 | s->_raw_size += PLT_ENTRY_SIZE; | |
1473 | ||
e7bab9df MM |
1474 | #if 0 |
1475 | /* We also need to make an entry in the .got.plt section, which | |
1476 | will be placed in the .got section by the linker script. */ | |
1477 | ||
1478 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1479 | BFD_ASSERT (s != NULL); | |
1480 | s->_raw_size += 4; | |
1481 | #endif | |
1482 | ||
3f7ca26b MM |
1483 | /* We also need to make an entry in the .rela.plt section. */ |
1484 | ||
1485 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1486 | BFD_ASSERT (s != NULL); | |
1487 | s->_raw_size += sizeof (Elf32_External_Rela); | |
1488 | ||
1489 | return true; | |
1490 | } | |
1491 | ||
1492 | /* If this is a weak symbol, and there is a real definition, the | |
1493 | processor independent code will have arranged for us to see the | |
1494 | real definition first, and we can just use the same value. */ | |
1495 | if (h->weakdef != NULL) | |
1496 | { | |
1497 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1498 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1499 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1500 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1501 | return true; | |
1502 | } | |
1503 | ||
1504 | /* This is a reference to a symbol defined by a dynamic object which | |
1505 | is not a function. */ | |
1506 | ||
1507 | /* If we are creating a shared library, we must presume that the | |
1508 | only references to the symbol are via the global offset table. | |
1509 | For such cases we need not do anything here; the relocations will | |
1510 | be handled correctly by relocate_section. */ | |
1511 | if (info->shared) | |
1512 | return true; | |
1513 | ||
1514 | /* We must allocate the symbol in our .dynbss section, which will | |
1515 | become part of the .bss section of the executable. There will be | |
1516 | an entry for this symbol in the .dynsym section. The dynamic | |
1517 | object will contain position independent code, so all references | |
1518 | from the dynamic object to this symbol will go through the global | |
1519 | offset table. The dynamic linker will use the .dynsym entry to | |
1520 | determine the address it must put in the global offset table, so | |
1521 | both the dynamic object and the regular object will refer to the | |
1522 | same memory location for the variable. */ | |
1523 | ||
1524 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1525 | BFD_ASSERT (s != NULL); | |
1526 | ||
1527 | /* If the symbol is currently defined in the .bss section of the | |
1528 | dynamic object, then it is OK to simply initialize it to zero. | |
1529 | If the symbol is in some other section, we must generate a | |
dab45734 | 1530 | R_PPC_COPY reloc to tell the dynamic linker to copy the initial |
3f7ca26b MM |
1531 | value out of the dynamic object and into the runtime process |
1532 | image. We need to remember the offset into the .rela.bss section | |
1533 | we are going to use. */ | |
1534 | if ((h->root.u.def.section->flags & SEC_LOAD) != 0) | |
1535 | { | |
1536 | asection *srel; | |
1537 | ||
1538 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1539 | BFD_ASSERT (srel != NULL); | |
1540 | srel->_raw_size += sizeof (Elf32_External_Rel); | |
1541 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
1542 | } | |
1543 | ||
1544 | /* We need to figure out the alignment required for this symbol. I | |
1545 | have no idea how ELF linkers handle this. */ | |
1546 | power_of_two = bfd_log2 (h->size); | |
1547 | if (power_of_two > 3) | |
1548 | power_of_two = 3; | |
1549 | ||
1550 | /* Apply the required alignment. */ | |
1551 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1552 | (bfd_size_type) (1 << power_of_two)); | |
1553 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1554 | { | |
1555 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
1556 | return false; | |
1557 | } | |
1558 | ||
1559 | /* Define the symbol as being at this point in the section. */ | |
1560 | h->root.u.def.section = s; | |
1561 | h->root.u.def.value = s->_raw_size; | |
1562 | ||
1563 | /* Increment the section size to make room for the symbol. */ | |
1564 | s->_raw_size += h->size; | |
1565 | ||
08556813 MM |
1566 | return true; |
1567 | } | |
1568 | ||
1569 | \f | |
1570 | /* Increment the index of a dynamic symbol by a given amount. Called | |
1571 | via elf_link_hash_traverse. */ | |
1572 | ||
1573 | static boolean | |
1574 | ppc_elf_adjust_dynindx (h, cparg) | |
1575 | struct elf_link_hash_entry *h; | |
1576 | PTR cparg; | |
1577 | { | |
1578 | int *cp = (int *) cparg; | |
1579 | ||
1580 | #ifdef DEBUG | |
1581 | fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp); | |
1582 | #endif | |
1583 | ||
1584 | if (h->dynindx != -1) | |
1585 | h->dynindx += *cp; | |
1586 | ||
1587 | return true; | |
1588 | } | |
1589 | ||
1590 | \f | |
1591 | /* Set the sizes of the dynamic sections. */ | |
1592 | ||
1593 | static boolean | |
1594 | ppc_elf_size_dynamic_sections (output_bfd, info) | |
1595 | bfd *output_bfd; | |
1596 | struct bfd_link_info *info; | |
1597 | { | |
1598 | bfd *dynobj; | |
1599 | asection *s; | |
3f7ca26b MM |
1600 | boolean plt; |
1601 | boolean relocs; | |
08556813 | 1602 | boolean reltext; |
08556813 MM |
1603 | |
1604 | #ifdef DEBUG | |
1605 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); | |
1606 | #endif | |
1607 | ||
1608 | dynobj = elf_hash_table (info)->dynobj; | |
1609 | BFD_ASSERT (dynobj != NULL); | |
1610 | ||
1611 | if (elf_hash_table (info)->dynamic_sections_created) | |
1612 | { | |
1613 | /* Set the contents of the .interp section to the interpreter. */ | |
1614 | if (! info->shared) | |
1615 | { | |
1616 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1617 | BFD_ASSERT (s != NULL); | |
1618 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1619 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1620 | } | |
08556813 MM |
1621 | } |
1622 | else | |
1623 | { | |
3b3753b8 | 1624 | /* We may have created entries in the .rela.got, .rela.sdata, and |
e7bab9df | 1625 | .rela.sdata2 sections. However, if we are not creating the |
3b3753b8 MM |
1626 | dynamic sections, we will not actually use these entries. Reset |
1627 | the size of .rela.got, et al, which will cause it to get | |
1628 | stripped from the output file below. */ | |
1629 | static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 }; | |
1630 | char **p; | |
1631 | ||
1632 | for (p = rela_sections; *p != (char *)0; p++) | |
1633 | { | |
1634 | s = bfd_get_section_by_name (dynobj, *p); | |
1635 | if (s != NULL) | |
1636 | s->_raw_size = 0; | |
1637 | } | |
08556813 MM |
1638 | } |
1639 | ||
1640 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1641 | determined the sizes of the various dynamic sections. Allocate | |
1642 | memory for them. */ | |
3f7ca26b MM |
1643 | plt = false; |
1644 | relocs = false; | |
08556813 | 1645 | reltext = false; |
08556813 MM |
1646 | for (s = dynobj->sections; s != NULL; s = s->next) |
1647 | { | |
1648 | const char *name; | |
1649 | boolean strip; | |
1650 | ||
1651 | if ((s->flags & SEC_IN_MEMORY) == 0) | |
1652 | continue; | |
1653 | ||
1654 | /* It's OK to base decisions on the section name, because none | |
1655 | of the dynobj section names depend upon the input files. */ | |
1656 | name = bfd_get_section_name (dynobj, s); | |
1657 | ||
1658 | strip = false; | |
1659 | ||
3f7ca26b MM |
1660 | if (strcmp (name, ".plt") == 0) |
1661 | { | |
1662 | if (s->_raw_size == 0) | |
1663 | { | |
1664 | /* Strip this section if we don't need it; see the | |
1665 | comment below. */ | |
1666 | strip = true; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | /* Remember whether there is a PLT. */ | |
1671 | plt = true; | |
1672 | } | |
1673 | } | |
1674 | else if (strncmp (name, ".rela", 5) == 0) | |
08556813 MM |
1675 | { |
1676 | if (s->_raw_size == 0) | |
1677 | { | |
1678 | /* If we don't need this section, strip it from the | |
3f7ca26b MM |
1679 | output file. This is mostly to handle .rela.bss and |
1680 | .rela.plt. We must create both sections in | |
1681 | create_dynamic_sections, because they must be created | |
08556813 MM |
1682 | before the linker maps input sections to output |
1683 | sections. The linker does that before | |
1684 | adjust_dynamic_symbol is called, and it is that | |
1685 | function which decides whether anything needs to go | |
1686 | into these sections. */ | |
1687 | strip = true; | |
1688 | } | |
1689 | else | |
1690 | { | |
1691 | asection *target; | |
1692 | ||
3f7ca26b MM |
1693 | /* Remember whether there are any reloc sections other |
1694 | than .rel.plt. */ | |
1695 | if (strcmp (name, ".rela.plt") != 0) | |
1696 | { | |
1697 | relocs = true; | |
1698 | ||
1699 | /* If this relocation section applies to a read only | |
1700 | section, then we probably need a DT_TEXTREL | |
1701 | entry. The entries in the .rel.plt section | |
1702 | really apply to the .got section, which we | |
1703 | created ourselves and so know is not readonly. */ | |
1704 | target = bfd_get_section_by_name (output_bfd, name + 4); | |
1705 | if (target != NULL | |
1706 | && (target->flags & SEC_READONLY) != 0) | |
1707 | reltext = true; | |
1708 | } | |
08556813 MM |
1709 | |
1710 | /* We use the reloc_count field as a counter if we need | |
1711 | to copy relocs into the output file. */ | |
1712 | s->reloc_count = 0; | |
1713 | } | |
1714 | } | |
3f7ca26b MM |
1715 | else if (strcmp (name, ".got") != 0 |
1716 | && strcmp (name, ".sdata") != 0 | |
1717 | && strcmp (name, ".sdata2") != 0) | |
08556813 MM |
1718 | { |
1719 | /* It's not one of our sections, so don't allocate space. */ | |
1720 | continue; | |
1721 | } | |
1722 | ||
1723 | if (strip) | |
1724 | { | |
1725 | asection **spp; | |
1726 | ||
1727 | for (spp = &s->output_section->owner->sections; | |
1728 | *spp != s->output_section; | |
1729 | spp = &(*spp)->next) | |
1730 | ; | |
1731 | *spp = s->output_section->next; | |
1732 | --s->output_section->owner->section_count; | |
1733 | ||
1734 | continue; | |
1735 | } | |
1736 | ||
1737 | /* Allocate memory for the section contents. */ | |
eb82bc60 | 1738 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
08556813 MM |
1739 | if (s->contents == NULL && s->_raw_size != 0) |
1740 | return false; | |
1741 | } | |
1742 | ||
1743 | if (elf_hash_table (info)->dynamic_sections_created) | |
1744 | { | |
1745 | /* Add some entries to the .dynamic section. We fill in the | |
1746 | values later, in ppc_elf_finish_dynamic_sections, but we | |
1747 | must add the entries now so that we get the correct size for | |
1748 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1749 | dynamic linker and used by the debugger. */ | |
1750 | if (! info->shared) | |
1751 | { | |
1752 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
1753 | return false; | |
1754 | } | |
1755 | ||
3f7ca26b | 1756 | if (plt) |
08556813 | 1757 | { |
3f7ca26b MM |
1758 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) |
1759 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
1760 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL) | |
08556813 MM |
1761 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) |
1762 | return false; | |
1763 | } | |
1764 | ||
3f7ca26b MM |
1765 | if (relocs) |
1766 | { | |
1767 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
1768 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, DT_RELA) | |
1769 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT, | |
1770 | sizeof (Elf32_External_Rela))) | |
1771 | return false; | |
1772 | } | |
08556813 MM |
1773 | |
1774 | if (reltext) | |
1775 | { | |
1776 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
1777 | return false; | |
1778 | } | |
1779 | } | |
1780 | ||
1781 | /* If we are generating a shared library, we generate a section | |
1782 | symbol for each output section. These are local symbols, which | |
1783 | means that they must come first in the dynamic symbol table. | |
1784 | That means we must increment the dynamic symbol index of every | |
1785 | other dynamic symbol. */ | |
1786 | if (info->shared) | |
1787 | { | |
1788 | int c, i; | |
1789 | ||
1790 | c = bfd_count_sections (output_bfd); | |
1791 | elf_link_hash_traverse (elf_hash_table (info), | |
1792 | ppc_elf_adjust_dynindx, | |
1793 | (PTR) &c); | |
1794 | elf_hash_table (info)->dynsymcount += c; | |
1795 | ||
1796 | for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) | |
1797 | { | |
1798 | elf_section_data (s)->dynindx = i; | |
1799 | /* These symbols will have no names, so we don't need to | |
1800 | fiddle with dynstr_index. */ | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | return true; | |
1805 | } | |
1806 | ||
1807 | \f | |
1808 | /* Look through the relocs for a section during the first phase, and | |
1809 | allocate space in the global offset table or procedure linkage | |
1810 | table. */ | |
1811 | ||
1812 | static boolean | |
1813 | ppc_elf_check_relocs (abfd, info, sec, relocs) | |
1814 | bfd *abfd; | |
1815 | struct bfd_link_info *info; | |
1816 | asection *sec; | |
1817 | const Elf_Internal_Rela *relocs; | |
1818 | { | |
e25a7988 | 1819 | boolean ret = true; |
08556813 MM |
1820 | bfd *dynobj; |
1821 | Elf_Internal_Shdr *symtab_hdr; | |
1822 | struct elf_link_hash_entry **sym_hashes; | |
08556813 MM |
1823 | const Elf_Internal_Rela *rel; |
1824 | const Elf_Internal_Rela *rel_end; | |
e7bab9df | 1825 | bfd_vma *local_got_offsets; |
3b3753b8 | 1826 | elf_linker_section_t *got; |
3f7ca26b | 1827 | elf_linker_section_t *plt; |
3b3753b8 MM |
1828 | elf_linker_section_t *sdata; |
1829 | elf_linker_section_t *sdata2; | |
08556813 MM |
1830 | asection *sreloc; |
1831 | ||
1832 | if (info->relocateable) | |
1833 | return true; | |
1834 | ||
1835 | #ifdef DEBUG | |
3f7ca26b MM |
1836 | fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n", |
1837 | bfd_get_section_name (abfd, sec), | |
1838 | bfd_get_filename (abfd)); | |
08556813 MM |
1839 | #endif |
1840 | ||
3b3753b8 MM |
1841 | /* Create the linker generated sections all the time so that the special |
1842 | symbols are created. */ | |
1843 | if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL) | |
1844 | { | |
1845 | got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT); | |
1846 | if (!got) | |
e25a7988 | 1847 | ret = false; |
3b3753b8 MM |
1848 | } |
1849 | ||
3f7ca26b MM |
1850 | #if 0 |
1851 | if ((plt = elf_linker_section (abfd, LINKER_SECTION_PLT)) == NULL) | |
1852 | { | |
1853 | plt = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_PLT); | |
1854 | if (!plt) | |
e25a7988 | 1855 | ret = false; |
3f7ca26b MM |
1856 | } |
1857 | #endif | |
1858 | ||
3b3753b8 MM |
1859 | if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL) |
1860 | { | |
1861 | sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); | |
1862 | if (!sdata) | |
e25a7988 | 1863 | ret = false; |
3b3753b8 MM |
1864 | } |
1865 | ||
1866 | ||
1867 | if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL) | |
1868 | { | |
1869 | sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2); | |
1870 | if (!sdata2) | |
e25a7988 | 1871 | ret = false; |
3b3753b8 MM |
1872 | } |
1873 | ||
08556813 MM |
1874 | dynobj = elf_hash_table (info)->dynobj; |
1875 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1876 | sym_hashes = elf_sym_hashes (abfd); | |
e7bab9df | 1877 | local_got_offsets = elf_local_got_offsets (abfd); |
08556813 | 1878 | |
08556813 MM |
1879 | sreloc = NULL; |
1880 | ||
1881 | rel_end = relocs + sec->reloc_count; | |
1882 | for (rel = relocs; rel < rel_end; rel++) | |
1883 | { | |
1884 | unsigned long r_symndx; | |
1885 | struct elf_link_hash_entry *h; | |
1886 | ||
1887 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1888 | if (r_symndx < symtab_hdr->sh_info) | |
1889 | h = NULL; | |
1890 | else | |
1891 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1892 | ||
1893 | switch (ELF32_R_TYPE (rel->r_info)) | |
1894 | { | |
3b3753b8 | 1895 | /* GOT16 relocations */ |
08556813 MM |
1896 | case R_PPC_GOT16: |
1897 | case R_PPC_GOT16_LO: | |
1898 | case R_PPC_GOT16_HI: | |
1899 | case R_PPC_GOT16_HA: | |
3b3753b8 MM |
1900 | if (got->rel_section == NULL |
1901 | && (h != NULL || info->shared) | |
1902 | && !_bfd_elf_make_linker_section_rela (dynobj, got, 2)) | |
e25a7988 MM |
1903 | { |
1904 | ret = false; | |
1905 | break; | |
1906 | } | |
1c3a295b | 1907 | |
3b3753b8 | 1908 | if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel)) |
e25a7988 | 1909 | ret = false; |
08556813 | 1910 | |
3b3753b8 | 1911 | break; |
08556813 | 1912 | |
3b3753b8 MM |
1913 | /* Indirect .sdata relocation */ |
1914 | case R_PPC_EMB_SDAI16: | |
e25a7988 MM |
1915 | if (info->shared) |
1916 | { | |
1917 | (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object", | |
1918 | bfd_get_filename (abfd), | |
1919 | "R_PPC_EMB_SDAI16"); | |
1920 | ret = false; | |
1921 | break; | |
1922 | } | |
1923 | ||
3b3753b8 MM |
1924 | if (got->rel_section == NULL |
1925 | && (h != NULL || info->shared) | |
1926 | && !_bfd_elf_make_linker_section_rela (dynobj, got, 2)) | |
e25a7988 MM |
1927 | { |
1928 | ret = false; | |
1929 | break; | |
1930 | } | |
08556813 | 1931 | |
3b3753b8 | 1932 | if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel)) |
e25a7988 | 1933 | ret = false; |
08556813 | 1934 | |
3b3753b8 | 1935 | break; |
08556813 | 1936 | |
3b3753b8 MM |
1937 | /* Indirect .sdata2 relocation */ |
1938 | case R_PPC_EMB_SDA2I16: | |
e25a7988 MM |
1939 | if (info->shared) |
1940 | { | |
1941 | (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object", | |
1942 | bfd_get_filename (abfd), | |
1943 | "R_PPC_EMB_SDA2I16"); | |
1944 | ret = false; | |
1945 | break; | |
1946 | } | |
1947 | ||
3b3753b8 MM |
1948 | if (got->rel_section == NULL |
1949 | && (h != NULL || info->shared) | |
1950 | && !_bfd_elf_make_linker_section_rela (dynobj, got, 2)) | |
1951 | return false; | |
08556813 | 1952 | |
3b3753b8 MM |
1953 | if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel)) |
1954 | return false; | |
08556813 MM |
1955 | |
1956 | break; | |
1957 | ||
e25a7988 MM |
1958 | case R_PPC_SDAREL16: |
1959 | case R_PPC_EMB_SDA2REL: | |
1960 | case R_PPC_EMB_SDA21: | |
1961 | if (info->shared) | |
1962 | { | |
1963 | (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object", | |
1964 | bfd_get_filename (abfd), | |
1965 | ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name); | |
1966 | ret = false; | |
1967 | } | |
1968 | break; | |
1969 | ||
08556813 MM |
1970 | case R_PPC_PLT32: |
1971 | case R_PPC_PLTREL24: | |
1972 | case R_PPC_PLT16_LO: | |
1973 | case R_PPC_PLT16_HI: | |
1974 | case R_PPC_PLT16_HA: | |
1975 | #ifdef DEBUG | |
1976 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
1977 | #endif | |
1978 | /* This symbol requires a procedure linkage table entry. We | |
1979 | actually build the entry in adjust_dynamic_symbol, | |
1980 | because this might be a case of linking PIC code without | |
1981 | linking in any dynamic objects, in which case we don't | |
1982 | need to generate a procedure linkage table after all. */ | |
1983 | ||
1984 | if (h == NULL) | |
1985 | { | |
1986 | /* It does not make sense to have a procedure linkage | |
1987 | table entry for a local symbol. */ | |
1988 | bfd_set_error (bfd_error_bad_value); | |
e25a7988 MM |
1989 | ret = false; |
1990 | break; | |
08556813 MM |
1991 | } |
1992 | ||
1993 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1994 | if (h->dynindx == -1) | |
1995 | { | |
1996 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
e25a7988 MM |
1997 | { |
1998 | ret = false; | |
1999 | break; | |
2000 | } | |
08556813 MM |
2001 | } |
2002 | ||
2003 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2004 | break; | |
2005 | ||
e25a7988 MM |
2006 | /* the following relocations don't need to propigate the relocation if |
2007 | linking a shared object since they are section relative. */ | |
2008 | case R_PPC_SECTOFF: | |
2009 | case R_PPC_SECTOFF_LO: | |
2010 | case R_PPC_SECTOFF_HI: | |
2011 | case R_PPC_SECTOFF_HA: | |
2012 | break; | |
2013 | ||
e7bab9df MM |
2014 | /* This refers only to functions defined in the shared library */ |
2015 | case R_PPC_LOCAL24PC: | |
2016 | break; | |
2017 | ||
e25a7988 MM |
2018 | /* When creating a shared object, we must copy these |
2019 | relocs into the output file. We create a reloc | |
2020 | section in dynobj and make room for the reloc. */ | |
2021 | case R_PPC_REL24: | |
08556813 MM |
2022 | if (h != NULL |
2023 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2024 | break; | |
0293d5b0 | 2025 | /* fall through */ |
e25a7988 MM |
2026 | |
2027 | case R_PPC_REL14: | |
2028 | case R_PPC_REL14_BRTAKEN: | |
2029 | case R_PPC_REL14_BRNTAKEN: | |
08556813 MM |
2030 | if (h == NULL) |
2031 | break; | |
0293d5b0 | 2032 | /* fall through */ |
e25a7988 MM |
2033 | |
2034 | default: | |
08556813 MM |
2035 | if (info->shared |
2036 | && (sec->flags & SEC_ALLOC) != 0) | |
2037 | { | |
e7bab9df MM |
2038 | #ifdef DEBUG |
2039 | fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n", | |
2040 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); | |
2041 | #endif | |
08556813 MM |
2042 | if (sreloc == NULL) |
2043 | { | |
2044 | const char *name; | |
2045 | ||
2046 | name = (bfd_elf_string_from_elf_section | |
2047 | (abfd, | |
2048 | elf_elfheader (abfd)->e_shstrndx, | |
2049 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2050 | if (name == NULL) | |
e25a7988 MM |
2051 | { |
2052 | ret = false; | |
2053 | break; | |
2054 | } | |
08556813 MM |
2055 | |
2056 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2057 | && strcmp (bfd_get_section_name (abfd, sec), | |
2058 | name + 5) == 0); | |
2059 | ||
2060 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2061 | if (sreloc == NULL) | |
2062 | { | |
2063 | sreloc = bfd_make_section (dynobj, name); | |
2064 | if (sreloc == NULL | |
2065 | || ! bfd_set_section_flags (dynobj, sreloc, | |
2066 | (SEC_ALLOC | |
2067 | | SEC_LOAD | |
2068 | | SEC_HAS_CONTENTS | |
2069 | | SEC_IN_MEMORY | |
2070 | | SEC_READONLY)) | |
2071 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
e25a7988 MM |
2072 | { |
2073 | ret = false; | |
2074 | break; | |
2075 | } | |
08556813 MM |
2076 | } |
2077 | } | |
2078 | ||
2079 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
2080 | } | |
2081 | ||
2082 | break; | |
08556813 MM |
2083 | } |
2084 | } | |
2085 | ||
e25a7988 | 2086 | return ret; |
08556813 MM |
2087 | } |
2088 | ||
9d621c7d MM |
2089 | \f |
2090 | /* Hook called by the linker routine which adds symbols from an object | |
2091 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
2092 | ||
2093 | /*ARGSUSED*/ | |
2094 | static boolean | |
2095 | ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
2096 | bfd *abfd; | |
2097 | struct bfd_link_info *info; | |
2098 | const Elf_Internal_Sym *sym; | |
2099 | const char **namep; | |
2100 | flagword *flagsp; | |
2101 | asection **secp; | |
2102 | bfd_vma *valp; | |
2103 | { | |
0293d5b0 | 2104 | if (sym->st_shndx == SHN_COMMON && !info->relocateable && sym->st_size <= bfd_get_gp_size (abfd)) |
9d621c7d | 2105 | { |
eb82bc60 | 2106 | /* Common symbols less than or equal to -G nn bytes are automatically |
9d621c7d | 2107 | put into .sdata. */ |
3f7ca26b | 2108 | elf_linker_section_t *sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); |
9d621c7d | 2109 | if (!sdata->bss_section) |
3f7ca26b | 2110 | { |
e7bab9df MM |
2111 | /* We don't go through bfd_make_section, because we don't |
2112 | want to attach this common section to DYNOBJ. The linker | |
2113 | will move the symbols to the appropriate output section | |
2114 | when it defines common symbols. */ | |
2115 | sdata->bss_section = ((asection *) | |
2116 | bfd_zalloc (abfd, sizeof (asection))); | |
2117 | if (sdata->bss_section == NULL) | |
2118 | return false; | |
2119 | sdata->bss_section->name = sdata->bss_name; | |
2120 | sdata->bss_section->flags = SEC_IS_COMMON; | |
2121 | sdata->bss_section->output_section = sdata->bss_section; | |
2122 | sdata->bss_section->symbol = | |
2123 | (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); | |
2124 | sdata->bss_section->symbol_ptr_ptr = | |
2125 | (asymbol **) bfd_zalloc (abfd, sizeof (asymbol *)); | |
2126 | if (sdata->bss_section->symbol == NULL | |
2127 | || sdata->bss_section->symbol_ptr_ptr == NULL) | |
2128 | return false; | |
2129 | sdata->bss_section->symbol->name = sdata->bss_name; | |
2130 | sdata->bss_section->symbol->flags = BSF_SECTION_SYM; | |
2131 | sdata->bss_section->symbol->section = sdata->bss_section; | |
2132 | *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol; | |
3f7ca26b MM |
2133 | } |
2134 | ||
9d621c7d | 2135 | *secp = sdata->bss_section; |
9d621c7d MM |
2136 | *valp = sym->st_size; |
2137 | } | |
2138 | ||
2139 | return true; | |
2140 | } | |
2141 | ||
08556813 MM |
2142 | \f |
2143 | /* Finish up dynamic symbol handling. We set the contents of various | |
2144 | dynamic sections here. */ | |
2145 | ||
2146 | static boolean | |
2147 | ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
2148 | bfd *output_bfd; | |
2149 | struct bfd_link_info *info; | |
2150 | struct elf_link_hash_entry *h; | |
2151 | Elf_Internal_Sym *sym; | |
2152 | { | |
2153 | bfd *dynobj; | |
2154 | ||
2155 | #ifdef DEBUG | |
3f7ca26b | 2156 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", h->root.root.string); |
08556813 MM |
2157 | #endif |
2158 | ||
2159 | dynobj = elf_hash_table (info)->dynobj; | |
3b3753b8 | 2160 | BFD_ASSERT (dynobj != NULL); |
08556813 MM |
2161 | |
2162 | if (h->plt_offset != (bfd_vma) -1) | |
2163 | { | |
2164 | asection *splt; | |
2165 | asection *srela; | |
2166 | Elf_Internal_Rela rela; | |
2167 | ||
3f7ca26b MM |
2168 | #ifdef DEBUG |
2169 | fprintf (stderr, ", plt_offset = %d", h->plt_offset); | |
2170 | #endif | |
2171 | ||
08556813 MM |
2172 | /* This symbol has an entry in the procedure linkage table. Set |
2173 | it up. */ | |
2174 | ||
2175 | BFD_ASSERT (h->dynindx != -1); | |
2176 | ||
2177 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2178 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2179 | BFD_ASSERT (splt != NULL && srela != NULL); | |
2180 | ||
3f7ca26b MM |
2181 | /* We don't need to fill in the .plt. The solaris dynamic linker will |
2182 | fill it in. */ | |
08556813 MM |
2183 | |
2184 | /* Fill in the entry in the .rela.plt section. */ | |
2185 | rela.r_offset = (splt->output_section->vma | |
2186 | + splt->output_offset | |
2187 | + h->plt_offset); | |
3f7ca26b | 2188 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); |
08556813 MM |
2189 | rela.r_addend = 0; |
2190 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
2191 | ((Elf32_External_Rela *) srela->contents | |
3f7ca26b | 2192 | + ((h->plt_offset - PLT_INITIAL_ENTRY_SIZE) / 8))); |
08556813 MM |
2193 | |
2194 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2195 | { | |
2196 | /* Mark the symbol as undefined, rather than as defined in | |
2197 | the .plt section. Leave the value alone. */ | |
2198 | sym->st_shndx = SHN_UNDEF; | |
2199 | } | |
2200 | } | |
2201 | ||
08556813 MM |
2202 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
2203 | { | |
2204 | asection *s; | |
2205 | Elf_Internal_Rela rela; | |
2206 | ||
2207 | /* This symbols needs a copy reloc. Set it up. */ | |
2208 | ||
3f7ca26b MM |
2209 | #ifdef DEBUG |
2210 | fprintf (stderr, ", copy"); | |
2211 | #endif | |
2212 | ||
08556813 MM |
2213 | BFD_ASSERT (h->dynindx != -1); |
2214 | ||
2215 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2216 | ".rela.bss"); | |
2217 | BFD_ASSERT (s != NULL); | |
2218 | ||
2219 | rela.r_offset = (h->root.u.def.value | |
2220 | + h->root.u.def.section->output_section->vma | |
2221 | + h->root.u.def.section->output_offset); | |
2222 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
2223 | rela.r_addend = 0; | |
2224 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
2225 | ((Elf32_External_Rela *) s->contents | |
2226 | + s->reloc_count)); | |
2227 | ++s->reloc_count; | |
2228 | } | |
2229 | ||
3f7ca26b MM |
2230 | #ifdef DEBUG |
2231 | fprintf (stderr, "\n"); | |
2232 | #endif | |
2233 | ||
08556813 MM |
2234 | /* Mark some specially defined symbols as absolute. */ |
2235 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2236 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
2237 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
2238 | sym->st_shndx = SHN_ABS; | |
2239 | ||
2240 | return true; | |
2241 | } | |
2242 | ||
2243 | \f | |
2244 | /* Finish up the dynamic sections. */ | |
2245 | ||
2246 | static boolean | |
2247 | ppc_elf_finish_dynamic_sections (output_bfd, info) | |
2248 | bfd *output_bfd; | |
2249 | struct bfd_link_info *info; | |
2250 | { | |
08556813 | 2251 | asection *sdyn; |
3b3753b8 MM |
2252 | bfd *dynobj = elf_hash_table (info)->dynobj; |
2253 | elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT); | |
08556813 MM |
2254 | |
2255 | #ifdef DEBUG | |
2256 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
2257 | #endif | |
2258 | ||
08556813 MM |
2259 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2260 | ||
2261 | if (elf_hash_table (info)->dynamic_sections_created) | |
2262 | { | |
2263 | asection *splt; | |
2264 | Elf32_External_Dyn *dyncon, *dynconend; | |
2265 | ||
2266 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2267 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2268 | ||
2269 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2270 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2271 | for (; dyncon < dynconend; dyncon++) | |
2272 | { | |
2273 | Elf_Internal_Dyn dyn; | |
2274 | const char *name; | |
2275 | boolean size; | |
2276 | ||
2277 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2278 | ||
2279 | switch (dyn.d_tag) | |
2280 | { | |
3f7ca26b MM |
2281 | case DT_PLTGOT: name = ".plt"; size = false; break; |
2282 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
08556813 | 2283 | case DT_JMPREL: name = ".rela.plt"; size = false; break; |
3f7ca26b | 2284 | default: name = NULL; size = false; break; |
08556813 MM |
2285 | } |
2286 | ||
2287 | if (name != NULL) | |
2288 | { | |
2289 | asection *s; | |
2290 | ||
2291 | s = bfd_get_section_by_name (output_bfd, name); | |
2292 | if (s == NULL) | |
2293 | dyn.d_un.d_val = 0; | |
2294 | else | |
2295 | { | |
2296 | if (! size) | |
2297 | dyn.d_un.d_ptr = s->vma; | |
2298 | else | |
2299 | { | |
2300 | if (s->_cooked_size != 0) | |
2301 | dyn.d_un.d_val = s->_cooked_size; | |
2302 | else | |
2303 | dyn.d_un.d_val = s->_raw_size; | |
2304 | } | |
2305 | } | |
2306 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2307 | } | |
2308 | } | |
08556813 MM |
2309 | } |
2310 | ||
3b3753b8 MM |
2311 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
2312 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
2313 | if (got) | |
08556813 | 2314 | { |
3b3753b8 MM |
2315 | unsigned char *contents = got->section->contents + got->hole_offset; |
2316 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); | |
2317 | ||
08556813 | 2318 | if (sdyn == NULL) |
3b3753b8 | 2319 | bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); |
08556813 MM |
2320 | else |
2321 | bfd_put_32 (output_bfd, | |
2322 | sdyn->output_section->vma + sdyn->output_offset, | |
3b3753b8 | 2323 | contents+4); |
08556813 | 2324 | |
3b3753b8 MM |
2325 | elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4; |
2326 | } | |
08556813 MM |
2327 | |
2328 | if (info->shared) | |
2329 | { | |
2330 | asection *sdynsym; | |
2331 | asection *s; | |
2332 | Elf_Internal_Sym sym; | |
2333 | ||
2334 | /* Set up the section symbols for the output sections. */ | |
2335 | ||
2336 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
2337 | BFD_ASSERT (sdynsym != NULL); | |
2338 | ||
2339 | sym.st_size = 0; | |
2340 | sym.st_name = 0; | |
2341 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
2342 | sym.st_other = 0; | |
2343 | ||
2344 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
2345 | { | |
2346 | int indx; | |
2347 | ||
2348 | sym.st_value = s->vma; | |
2349 | ||
2350 | indx = elf_section_data (s)->this_idx; | |
2351 | BFD_ASSERT (indx > 0); | |
2352 | sym.st_shndx = indx; | |
2353 | ||
2354 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
2355 | (PTR) (((Elf32_External_Sym *) | |
2356 | sdynsym->contents) | |
2357 | + elf_section_data (s)->dynindx)); | |
2358 | } | |
2359 | ||
2360 | /* Set the sh_info field of the output .dynsym section to the | |
2361 | index of the first global symbol. */ | |
2362 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
2363 | bfd_count_sections (output_bfd) + 1; | |
2364 | } | |
2365 | ||
2366 | return true; | |
2367 | } | |
2368 | ||
ede4eed4 KR |
2369 | \f |
2370 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
2371 | to handle the relocations for a section. | |
bcbe2c71 | 2372 | |
ede4eed4 KR |
2373 | The relocs are always passed as Rela structures; if the section |
2374 | actually uses Rel structures, the r_addend field will always be | |
2375 | zero. | |
bcbe2c71 | 2376 | |
ede4eed4 KR |
2377 | This function is responsible for adjust the section contents as |
2378 | necessary, and (if using Rela relocs and generating a | |
2379 | relocateable output file) adjusting the reloc addend as | |
2380 | necessary. | |
bcbe2c71 | 2381 | |
ede4eed4 KR |
2382 | This function does not have to worry about setting the reloc |
2383 | address or the reloc symbol index. | |
2384 | ||
2385 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
2386 | ||
2387 | LOCAL_SECTIONS is an array giving the section in the input file | |
2388 | corresponding to the st_shndx field of each local symbol. | |
2389 | ||
2390 | The global hash table entry for the global symbols can be found | |
2391 | via elf_sym_hashes (input_bfd). | |
2392 | ||
2393 | When generating relocateable output, this function must handle | |
2394 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
2395 | going to be the section symbol corresponding to the output | |
2396 | section, which means that the addend must be adjusted | |
2397 | accordingly. */ | |
2398 | ||
2399 | static boolean | |
2400 | ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
2401 | contents, relocs, local_syms, local_sections) | |
2402 | bfd *output_bfd; | |
2403 | struct bfd_link_info *info; | |
2404 | bfd *input_bfd; | |
2405 | asection *input_section; | |
2406 | bfd_byte *contents; | |
2407 | Elf_Internal_Rela *relocs; | |
2408 | Elf_Internal_Sym *local_syms; | |
2409 | asection **local_sections; | |
bcbe2c71 | 2410 | { |
08556813 | 2411 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
ede4eed4 | 2412 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
08556813 | 2413 | bfd *dynobj = elf_hash_table (info)->dynobj; |
3f7ca26b MM |
2414 | elf_linker_section_t *got = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_GOT) : NULL; |
2415 | elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL; | |
2416 | elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL; | |
07a159db MM |
2417 | Elf_Internal_Rela *rel = relocs; |
2418 | Elf_Internal_Rela *relend = relocs + input_section->reloc_count; | |
e7bab9df | 2419 | asection *sreloc = NULL; |
07a159db | 2420 | boolean ret = true; |
08556813 | 2421 | long insn; |
ede4eed4 KR |
2422 | |
2423 | #ifdef DEBUG | |
2424 | fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n", | |
2425 | bfd_get_filename (input_bfd), | |
2426 | bfd_section_name(input_bfd, input_section), | |
2427 | (long)input_section->reloc_count, | |
2428 | (info->relocateable) ? " (relocatable)" : ""); | |
2429 | #endif | |
2430 | ||
2431 | if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ | |
2432 | ppc_elf_howto_init (); | |
bcbe2c71 | 2433 | |
ede4eed4 | 2434 | for (; rel < relend; rel++) |
bcbe2c71 | 2435 | { |
07a159db MM |
2436 | enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info); |
2437 | bfd_vma offset = rel->r_offset; | |
2438 | bfd_vma addend = rel->r_addend; | |
2439 | bfd_reloc_status_type r = bfd_reloc_other; | |
2440 | Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; | |
2441 | asection *sec = (asection *)0; | |
2442 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; | |
c1e65e24 | 2443 | const char *sym_name = (const char *)0; |
ede4eed4 KR |
2444 | reloc_howto_type *howto; |
2445 | unsigned long r_symndx; | |
2446 | bfd_vma relocation; | |
2447 | ||
2448 | /* Unknown relocation handling */ | |
2449 | if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type]) | |
2450 | { | |
1c3a295b MM |
2451 | (*_bfd_error_handler) ("%s: unknown relocation type %d", |
2452 | bfd_get_filename (input_bfd), | |
2453 | (int)r_type); | |
ede4eed4 KR |
2454 | |
2455 | bfd_set_error (bfd_error_bad_value); | |
2456 | ret = false; | |
2457 | continue; | |
2458 | } | |
2459 | ||
2460 | howto = ppc_elf_howto_table[(int)r_type]; | |
2461 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2462 | ||
2463 | if (info->relocateable) | |
2464 | { | |
2465 | /* This is a relocateable link. We don't have to change | |
2466 | anything, unless the reloc is against a section symbol, | |
2467 | in which case we have to adjust according to where the | |
2468 | section symbol winds up in the output section. */ | |
2469 | if (r_symndx < symtab_hdr->sh_info) | |
2470 | { | |
2471 | sym = local_syms + r_symndx; | |
2472 | if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2473 | { | |
2474 | sec = local_sections[r_symndx]; | |
2475 | addend = rel->r_addend += sec->output_offset + sym->st_value; | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | #ifdef DEBUG | |
2480 | fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n", | |
2481 | howto->name, | |
2482 | (int)r_type, | |
2483 | r_symndx, | |
2484 | (long)offset, | |
2485 | (long)addend); | |
2486 | #endif | |
2487 | continue; | |
2488 | } | |
2489 | ||
2490 | /* This is a final link. */ | |
ede4eed4 KR |
2491 | if (r_symndx < symtab_hdr->sh_info) |
2492 | { | |
2493 | sym = local_syms + r_symndx; | |
2494 | sec = local_sections[r_symndx]; | |
c1e65e24 MM |
2495 | sym_name = "<local symbol>"; |
2496 | ||
ede4eed4 KR |
2497 | relocation = (sec->output_section->vma |
2498 | + sec->output_offset | |
2499 | + sym->st_value); | |
2500 | } | |
2501 | else | |
2502 | { | |
2503 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
cf5138e3 ILT |
2504 | while (h->root.type == bfd_link_hash_indirect |
2505 | || h->root.type == bfd_link_hash_warning) | |
2506 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c1e65e24 | 2507 | sym_name = h->root.root.string; |
ede4eed4 KR |
2508 | if (h->root.type == bfd_link_hash_defined |
2509 | || h->root.type == bfd_link_hash_defweak) | |
2510 | { | |
2511 | sec = h->root.u.def.section; | |
e7bab9df MM |
2512 | if ((r_type == R_PPC_PLT32 |
2513 | && h->plt_offset != (bfd_vma) -1) | |
2514 | || ((r_type == R_PPC_GOT16 | |
2515 | || r_type == R_PPC_GOT16_LO | |
2516 | || r_type == R_PPC_GOT16_HI | |
2517 | || r_type == R_PPC_GOT16_HA) | |
2518 | && elf_hash_table (info)->dynamic_sections_created | |
2519 | && (! info->shared | |
2520 | || ! info->symbolic | |
2521 | || (h->elf_link_hash_flags | |
2522 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
2523 | || (info->shared | |
2524 | && (! info->symbolic | |
2525 | || (h->elf_link_hash_flags | |
2526 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2527 | && (input_section->flags & SEC_ALLOC) != 0 | |
2528 | && (r_type == R_PPC_ADDR32 | |
2529 | || r_type == R_PPC_ADDR24 | |
2530 | || r_type == R_PPC_ADDR16 | |
2531 | || r_type == R_PPC_ADDR16_LO | |
2532 | || r_type == R_PPC_ADDR16_HI | |
2533 | || r_type == R_PPC_ADDR16_HA | |
2534 | || r_type == R_PPC_ADDR14 | |
2535 | || r_type == R_PPC_ADDR14_BRTAKEN | |
2536 | || r_type == R_PPC_ADDR14_BRNTAKEN | |
2537 | || r_type == R_PPC_PLTREL24 | |
2538 | || r_type == R_PPC_COPY | |
2539 | || r_type == R_PPC_GLOB_DAT | |
2540 | || r_type == R_PPC_JMP_SLOT | |
2541 | || r_type == R_PPC_UADDR32 | |
2542 | || r_type == R_PPC_UADDR16 | |
2543 | || r_type == R_PPC_REL32 | |
2544 | || r_type == R_PPC_SDAREL16 | |
2545 | || r_type == R_PPC_EMB_NADDR32 | |
2546 | || r_type == R_PPC_EMB_NADDR16 | |
2547 | || r_type == R_PPC_EMB_NADDR16_LO | |
2548 | || r_type == R_PPC_EMB_NADDR16_HI | |
2549 | || r_type == R_PPC_EMB_NADDR16_HA | |
2550 | || r_type == R_PPC_EMB_SDAI16 | |
2551 | || r_type == R_PPC_EMB_SDA2I16 | |
2552 | || r_type == R_PPC_EMB_SDA2REL | |
2553 | || r_type == R_PPC_EMB_SDA21 | |
2554 | || r_type == R_PPC_EMB_MRKREF | |
2555 | || r_type == R_PPC_EMB_BIT_FLD | |
2556 | || r_type == R_PPC_EMB_RELSDA | |
2557 | || ((r_type == R_PPC_REL24 | |
2558 | || r_type == R_PPC_REL14 | |
2559 | || r_type == R_PPC_REL14_BRTAKEN | |
2560 | || r_type == R_PPC_REL14_BRNTAKEN | |
2561 | || r_type == R_PPC_RELATIVE) | |
2562 | && strcmp (h->root.root.string, | |
2563 | "_GLOBAL_OFFSET_TABLE_") != 0)))) | |
3f7ca26b | 2564 | { |
e7bab9df MM |
2565 | /* In these cases, we don't need the relocation |
2566 | value. We check specially because in some | |
2567 | obscure cases sec->output_section will be NULL. */ | |
3f7ca26b MM |
2568 | relocation = 0; |
2569 | } | |
2570 | else | |
2571 | relocation = (h->root.u.def.value | |
2572 | + sec->output_section->vma | |
2573 | + sec->output_offset); | |
ede4eed4 KR |
2574 | } |
2575 | else if (h->root.type == bfd_link_hash_undefweak) | |
2576 | relocation = 0; | |
2577 | else if (info->shared) | |
2578 | relocation = 0; | |
2579 | else | |
2580 | { | |
2581 | (*info->callbacks->undefined_symbol)(info, | |
2582 | h->root.root.string, | |
2583 | input_bfd, | |
2584 | input_section, | |
2585 | rel->r_offset); | |
2586 | ret = false; | |
2587 | continue; | |
2588 | } | |
2589 | } | |
2590 | ||
2591 | switch ((int)r_type) | |
2592 | { | |
2593 | default: | |
c1e65e24 | 2594 | (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s", |
1c3a295b | 2595 | bfd_get_filename (input_bfd), |
c1e65e24 | 2596 | (int)r_type, sym_name); |
1c3a295b MM |
2597 | |
2598 | bfd_set_error (bfd_error_bad_value); | |
2599 | ret = false; | |
2600 | continue; | |
2601 | ||
3b3753b8 | 2602 | /* relocations that need no special processing */ |
e7bab9df MM |
2603 | case (int)R_PPC_LOCAL24PC: |
2604 | break; | |
2605 | ||
2606 | case (int)R_PPC_REL24: | |
2607 | case (int)R_PPC_REL14: | |
2608 | if (h != NULL | |
2609 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2610 | break; | |
2611 | /* fall through */ | |
2612 | ||
2613 | /* Relocations that need to be propigated if this is a shared object */ | |
3b3753b8 MM |
2614 | case (int)R_PPC_NONE: |
2615 | case (int)R_PPC_ADDR32: | |
2616 | case (int)R_PPC_ADDR24: | |
2617 | case (int)R_PPC_ADDR16: | |
2618 | case (int)R_PPC_ADDR16_LO: | |
2619 | case (int)R_PPC_ADDR16_HI: | |
2620 | case (int)R_PPC_ADDR14: | |
3b3753b8 MM |
2621 | case (int)R_PPC_UADDR32: |
2622 | case (int)R_PPC_UADDR16: | |
2623 | case (int)R_PPC_REL32: | |
e7bab9df MM |
2624 | case (int)R_PPC_PLTREL24: |
2625 | if (info->shared | |
2626 | && (input_section->flags & SEC_ALLOC) != 0) | |
2627 | { | |
2628 | Elf_Internal_Rela outrel; | |
2629 | ||
2630 | #ifdef DEBUG | |
2631 | fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n", | |
2632 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); | |
2633 | #endif | |
2634 | ||
2635 | /* When generating a shared object, these relocations | |
2636 | are copied into the output file to be resolved at run | |
2637 | time. */ | |
2638 | ||
2639 | if (sreloc == NULL) | |
2640 | { | |
2641 | const char *name; | |
2642 | ||
2643 | name = (bfd_elf_string_from_elf_section | |
2644 | (input_bfd, | |
2645 | elf_elfheader (input_bfd)->e_shstrndx, | |
2646 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
2647 | if (name == NULL) | |
2648 | return false; | |
2649 | ||
2650 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2651 | && strcmp (bfd_get_section_name (input_bfd, | |
2652 | input_section), | |
2653 | name + 5) == 0); | |
2654 | ||
2655 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2656 | BFD_ASSERT (sreloc != NULL); | |
2657 | } | |
2658 | ||
2659 | outrel.r_offset = (rel->r_offset | |
2660 | + input_section->output_section->vma | |
2661 | + input_section->output_offset); | |
2662 | if (h != NULL | |
2663 | && (! info->symbolic | |
2664 | || (h->elf_link_hash_flags | |
2665 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
2666 | { | |
2667 | BFD_ASSERT (h->dynindx != -1); | |
2668 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2669 | outrel.r_addend = rel->r_addend; | |
2670 | } | |
2671 | else | |
2672 | { | |
2673 | if (r_type == R_PPC_ADDR32) | |
2674 | { | |
2675 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
2676 | outrel.r_addend = relocation + rel->r_addend; | |
2677 | } | |
2678 | else | |
2679 | { | |
2680 | long indx; | |
2681 | ||
2682 | if (h == NULL) | |
2683 | sec = local_sections[r_symndx]; | |
2684 | else | |
2685 | { | |
2686 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2687 | || (h->root.type | |
2688 | == bfd_link_hash_defweak)); | |
2689 | sec = h->root.u.def.section; | |
2690 | } | |
2691 | if (sec != NULL && bfd_is_abs_section (sec)) | |
2692 | indx = 0; | |
2693 | else if (sec == NULL || sec->owner == NULL) | |
2694 | { | |
2695 | bfd_set_error (bfd_error_bad_value); | |
2696 | return false; | |
2697 | } | |
2698 | else | |
2699 | { | |
2700 | asection *osec; | |
2701 | ||
2702 | osec = sec->output_section; | |
2703 | indx = elf_section_data (osec)->dynindx; | |
2704 | if (indx == 0) | |
2705 | abort (); | |
2706 | } | |
2707 | ||
2708 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
2709 | outrel.r_addend = relocation + rel->r_addend; | |
2710 | } | |
2711 | } | |
2712 | ||
2713 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
2714 | (((Elf32_External_Rela *) | |
2715 | sreloc->contents) | |
2716 | + sreloc->reloc_count)); | |
2717 | ++sreloc->reloc_count; | |
2718 | ||
2719 | /* This reloc will be computed at runtime, so there's no | |
2720 | need to do anything now. */ | |
2721 | continue; | |
2722 | } | |
ede4eed4 KR |
2723 | break; |
2724 | ||
3b3753b8 MM |
2725 | /* branch taken prediction relocations */ |
2726 | case (int)R_PPC_ADDR14_BRTAKEN: | |
08556813 | 2727 | case (int)R_PPC_REL14_BRTAKEN: |
07a159db MM |
2728 | insn = bfd_get_32 (output_bfd, contents + offset); |
2729 | if ((relocation - offset) & 0x8000) | |
2730 | insn &= ~BRANCH_PREDICT_BIT; | |
2731 | else | |
2732 | insn |= BRANCH_PREDICT_BIT; | |
2733 | bfd_put_32 (output_bfd, insn, contents + offset); | |
2734 | break; | |
2735 | ||
3b3753b8 MM |
2736 | /* branch not taken predicition relocations */ |
2737 | case (int)R_PPC_ADDR14_BRNTAKEN: | |
08556813 | 2738 | case (int)R_PPC_REL14_BRNTAKEN: |
08556813 | 2739 | insn = bfd_get_32 (output_bfd, contents + offset); |
07a159db MM |
2740 | if ((relocation - offset) & 0x8000) |
2741 | insn |= BRANCH_PREDICT_BIT; | |
2742 | else | |
2743 | insn &= ~BRANCH_PREDICT_BIT; | |
08556813 MM |
2744 | bfd_put_32 (output_bfd, insn, contents + offset); |
2745 | break; | |
2746 | ||
3b3753b8 MM |
2747 | /* GOT16 relocations */ |
2748 | case (int)R_PPC_GOT16: | |
ede4eed4 KR |
2749 | case (int)R_PPC_GOT16_LO: |
2750 | case (int)R_PPC_GOT16_HI: | |
1c3a295b | 2751 | case (int)R_PPC_GOT16_HA: |
3b3753b8 MM |
2752 | relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, |
2753 | got, h, relocation, rel, | |
2754 | R_PPC_RELATIVE); | |
2755 | break; | |
07a159db | 2756 | |
3b3753b8 MM |
2757 | /* Indirect .sdata relocation */ |
2758 | case (int)R_PPC_EMB_SDAI16: | |
2759 | BFD_ASSERT (sdata != NULL); | |
2760 | relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, | |
2761 | sdata, h, relocation, rel, | |
2762 | R_PPC_RELATIVE); | |
2763 | break; | |
07a159db | 2764 | |
3b3753b8 MM |
2765 | /* Indirect .sdata2 relocation */ |
2766 | case (int)R_PPC_EMB_SDA2I16: | |
2767 | BFD_ASSERT (sdata2 != NULL); | |
2768 | relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, | |
2769 | sdata2, h, relocation, rel, | |
2770 | R_PPC_RELATIVE); | |
ede4eed4 KR |
2771 | break; |
2772 | ||
07a159db MM |
2773 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
2774 | section, not the actual VMA. This is appropriate when generating | |
2775 | an embedded ELF object, for which the .got section acts like the | |
2776 | AIX .toc section. */ | |
08556813 MM |
2777 | case (int)R_PPC_TOC16: /* phony GOT16 relocations */ |
2778 | BFD_ASSERT (sec != (asection *)0); | |
07a159db MM |
2779 | BFD_ASSERT (bfd_is_und_section (sec) |
2780 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
bd2d10c0 | 2781 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0) |
07a159db | 2782 | |
eb82bc60 | 2783 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
08556813 MM |
2784 | break; |
2785 | ||
3b3753b8 MM |
2786 | /* arithmetic adjust relocations */ |
2787 | case (int)R_PPC_ADDR16_HA: | |
ede4eed4 | 2788 | BFD_ASSERT (sec != (asection *)0); |
07a159db | 2789 | addend += ((relocation + addend) & 0x8000) << 1; |
ede4eed4 | 2790 | break; |
1c3a295b | 2791 | |
3b3753b8 MM |
2792 | /* relocate against _SDA_BASE_ */ |
2793 | case (int)R_PPC_SDAREL16: | |
bd2d10c0 MM |
2794 | BFD_ASSERT (sec != (asection *)0); |
2795 | if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0 | |
2796 | && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0) | |
2797 | { | |
c1e65e24 | 2798 | (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)", |
bd2d10c0 | 2799 | bfd_get_filename (input_bfd), |
c1e65e24 | 2800 | sym_name, |
3b3753b8 | 2801 | ppc_elf_howto_table[ (int)r_type ]->name, |
bd2d10c0 MM |
2802 | bfd_get_section_name (abfd, sec)); |
2803 | ||
2804 | bfd_set_error (bfd_error_bad_value); | |
2805 | ret = false; | |
2806 | continue; | |
2807 | } | |
9d621c7d | 2808 | addend -= (sdata->sym_hash->root.u.def.value |
eb82bc60 MM |
2809 | + sdata->sym_hash->root.u.def.section->output_section->vma |
2810 | + sdata->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 | 2811 | break; |
bd2d10c0 | 2812 | |
05f927dd | 2813 | |
3b3753b8 MM |
2814 | /* relocate against _SDA2_BASE_ */ |
2815 | case (int)R_PPC_EMB_SDA2REL: | |
bd2d10c0 MM |
2816 | BFD_ASSERT (sec != (asection *)0); |
2817 | if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0 | |
2818 | && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0) | |
2819 | { | |
c1e65e24 | 2820 | (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)", |
bd2d10c0 | 2821 | bfd_get_filename (input_bfd), |
c1e65e24 | 2822 | sym_name, |
3b3753b8 | 2823 | ppc_elf_howto_table[ (int)r_type ]->name, |
bd2d10c0 MM |
2824 | bfd_get_section_name (abfd, sec)); |
2825 | ||
2826 | bfd_set_error (bfd_error_bad_value); | |
2827 | ret = false; | |
2828 | continue; | |
2829 | } | |
9d621c7d | 2830 | addend -= (sdata2->sym_hash->root.u.def.value |
eb82bc60 MM |
2831 | + sdata2->sym_hash->root.u.def.section->output_section->vma |
2832 | + sdata2->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 | 2833 | break; |
bd2d10c0 MM |
2834 | |
2835 | ||
3b3753b8 MM |
2836 | /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */ |
2837 | case (int)R_PPC_EMB_SDA21: | |
2838 | case (int)R_PPC_EMB_RELSDA: | |
2839 | { | |
2840 | const char *name = bfd_get_section_name (abfd, sec); | |
2841 | int reg; | |
2842 | ||
2843 | BFD_ASSERT (sec != (asection *)0); | |
2844 | if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0) | |
2845 | { | |
2846 | reg = 13; | |
9d621c7d | 2847 | addend -= (sdata->sym_hash->root.u.def.value |
eb82bc60 MM |
2848 | + sdata->sym_hash->root.u.def.section->output_section->vma |
2849 | + sdata->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 MM |
2850 | } |
2851 | ||
2852 | else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0) | |
2853 | { | |
2854 | reg = 2; | |
9d621c7d | 2855 | addend -= (sdata2->sym_hash->root.u.def.value |
eb82bc60 MM |
2856 | + sdata2->sym_hash->root.u.def.section->output_section->vma |
2857 | + sdata2->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 MM |
2858 | } |
2859 | ||
2860 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
2861 | { | |
2862 | reg = 0; | |
2863 | } | |
2864 | ||
2865 | else | |
2866 | { | |
c1e65e24 | 2867 | (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)", |
3b3753b8 | 2868 | bfd_get_filename (input_bfd), |
c1e65e24 | 2869 | sym_name, |
3b3753b8 MM |
2870 | ppc_elf_howto_table[ (int)r_type ]->name, |
2871 | bfd_get_section_name (abfd, sec)); | |
2872 | ||
2873 | bfd_set_error (bfd_error_bad_value); | |
2874 | ret = false; | |
2875 | continue; | |
2876 | } | |
d8fd85ad MM |
2877 | |
2878 | if (r_type == R_PPC_EMB_SDA21) | |
2879 | { /* fill in register field */ | |
cf5138e3 | 2880 | insn = bfd_get_32 (output_bfd, contents + offset); |
d8fd85ad | 2881 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
cf5138e3 | 2882 | bfd_put_32 (output_bfd, insn, contents + offset); |
d8fd85ad | 2883 | } |
3b3753b8 | 2884 | } |
d8fd85ad | 2885 | break; |
3b3753b8 | 2886 | |
eb82bc60 MM |
2887 | /* Relocate against the beginning of the section */ |
2888 | case (int)R_PPC_SECTOFF: | |
2889 | case (int)R_PPC_SECTOFF_LO: | |
2890 | case (int)R_PPC_SECTOFF_HI: | |
2891 | BFD_ASSERT (sec != (asection *)0); | |
2892 | addend -= sec->output_section->vma; | |
2893 | break; | |
2894 | ||
2895 | case (int)R_PPC_SECTOFF_HA: | |
2896 | BFD_ASSERT (sec != (asection *)0); | |
2897 | addend -= sec->output_section->vma; | |
2898 | addend += ((relocation + addend) & 0x8000) << 1; | |
2899 | break; | |
2900 | ||
2901 | /* Negative relocations */ | |
2902 | case (int)R_PPC_EMB_NADDR32: | |
2903 | case (int)R_PPC_EMB_NADDR16: | |
2904 | case (int)R_PPC_EMB_NADDR16_LO: | |
2905 | case (int)R_PPC_EMB_NADDR16_HI: | |
2906 | addend -= 2*relocation; | |
2907 | break; | |
2908 | ||
2909 | case (int)R_PPC_EMB_NADDR16_HA: | |
2910 | addend -= 2*relocation; | |
2911 | addend += ((relocation + addend) & 0x8000) << 1; | |
2912 | break; | |
2913 | ||
2914 | /* NOP relocation that prevents garbage collecting linkers from omitting a | |
2915 | reference. */ | |
2916 | case (int)R_PPC_EMB_MRKREF: | |
2917 | continue; | |
2918 | ||
3b3753b8 MM |
2919 | case (int)R_PPC_COPY: |
2920 | case (int)R_PPC_GLOB_DAT: | |
2921 | case (int)R_PPC_JMP_SLOT: | |
2922 | case (int)R_PPC_RELATIVE: | |
3b3753b8 MM |
2923 | case (int)R_PPC_PLT32: |
2924 | case (int)R_PPC_PLTREL32: | |
2925 | case (int)R_PPC_PLT16_LO: | |
2926 | case (int)R_PPC_PLT16_HI: | |
2927 | case (int)R_PPC_PLT16_HA: | |
3b3753b8 MM |
2928 | case (int)R_PPC_EMB_RELSEC16: |
2929 | case (int)R_PPC_EMB_RELST_LO: | |
2930 | case (int)R_PPC_EMB_RELST_HI: | |
2931 | case (int)R_PPC_EMB_RELST_HA: | |
2932 | case (int)R_PPC_EMB_BIT_FLD: | |
c1e65e24 | 2933 | (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.", |
1c3a295b | 2934 | bfd_get_filename (input_bfd), |
c1e65e24 MM |
2935 | ppc_elf_howto_table[ (int)r_type ]->name, |
2936 | sym_name); | |
1c3a295b | 2937 | |
3b3753b8 | 2938 | bfd_set_error (bfd_error_invalid_operation); |
1c3a295b MM |
2939 | ret = false; |
2940 | continue; | |
ede4eed4 KR |
2941 | } |
2942 | ||
2943 | ||
2944 | #ifdef DEBUG | |
c1e65e24 | 2945 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", |
ede4eed4 KR |
2946 | howto->name, |
2947 | (int)r_type, | |
c1e65e24 | 2948 | sym_name, |
ede4eed4 KR |
2949 | r_symndx, |
2950 | (long)offset, | |
2951 | (long)addend); | |
2952 | #endif | |
2953 | ||
2954 | r = _bfd_final_link_relocate (howto, | |
2955 | input_bfd, | |
2956 | input_section, | |
2957 | contents, | |
2958 | offset, | |
2959 | relocation, | |
2960 | addend); | |
2961 | ||
2962 | if (r != bfd_reloc_ok) | |
2963 | { | |
2964 | ret = false; | |
2965 | switch (r) | |
2966 | { | |
2967 | default: | |
2968 | break; | |
2969 | ||
2970 | case bfd_reloc_overflow: | |
2971 | { | |
2972 | const char *name; | |
2973 | ||
2974 | if (h != NULL) | |
2975 | name = h->root.root.string; | |
2976 | else | |
2977 | { | |
2978 | name = bfd_elf_string_from_elf_section (input_bfd, | |
2979 | symtab_hdr->sh_link, | |
2980 | sym->st_name); | |
2981 | if (name == NULL) | |
2982 | break; | |
2983 | ||
2984 | if (*name == '\0') | |
2985 | name = bfd_section_name (input_bfd, sec); | |
2986 | } | |
2987 | ||
2988 | (*info->callbacks->reloc_overflow)(info, | |
2989 | name, | |
2990 | howto->name, | |
2991 | (bfd_vma) 0, | |
2992 | input_bfd, | |
2993 | input_section, | |
2994 | offset); | |
2995 | } | |
2996 | break; | |
2997 | ||
2998 | } | |
2999 | } | |
bcbe2c71 MM |
3000 | } |
3001 | ||
bcbe2c71 | 3002 | |
ede4eed4 KR |
3003 | #ifdef DEBUG |
3004 | fprintf (stderr, "\n"); | |
3005 | #endif | |
bcbe2c71 | 3006 | |
ede4eed4 | 3007 | return ret; |
bcbe2c71 MM |
3008 | } |
3009 | ||
57081126 | 3010 | \f |
ede4eed4 KR |
3011 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
3012 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
bcbe2c71 MM |
3013 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec |
3014 | #define TARGET_BIG_NAME "elf32-powerpc" | |
3015 | #define ELF_ARCH bfd_arch_powerpc | |
3016 | #define ELF_MACHINE_CODE EM_PPC | |
3017 | #define ELF_MAXPAGESIZE 0x10000 | |
ede4eed4 | 3018 | #define elf_info_to_howto ppc_elf_info_to_howto |
bcbe2c71 MM |
3019 | |
3020 | #ifdef EM_CYGNUS_POWERPC | |
3021 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
3022 | #endif | |
3023 | ||
3024 | #ifdef EM_PPC_OLD | |
3025 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
3026 | #endif | |
3027 | ||
ede4eed4 KR |
3028 | #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data |
3029 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data | |
3030 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags | |
3031 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup | |
83f4323e | 3032 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
ede4eed4 | 3033 | #define elf_backend_relocate_section ppc_elf_relocate_section |
08556813 MM |
3034 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
3035 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
3036 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol | |
9d621c7d | 3037 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook |
08556813 MM |
3038 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections |
3039 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
3040 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
57081126 | 3041 | #define elf_backend_fake_sections ppc_elf_fake_sections |
3f7ca26b MM |
3042 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers |
3043 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map | |
ede4eed4 | 3044 | |
bcbe2c71 | 3045 | #include "elf32-target.h" |