Commit | Line | Data |
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252b5132 | 1 | /* MIPS-specific support for 64-bit ELF |
9e7b37b3 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 | 4 | Ian Lance Taylor, Cygnus Support |
103186c6 MM |
5 | Linker support added by Mark Mitchell, CodeSourcery, LLC. |
6 | <mark@codesourcery.com> | |
252b5132 RH |
7 | |
8 | This file is part of BFD, the Binary File Descriptor library. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | /* This file supports the 64-bit MIPS ELF ABI. | |
25 | ||
26 | The MIPS 64-bit ELF ABI uses an unusual reloc format. This file | |
27 | overrides the usual ELF reloc handling, and handles reading and | |
36b45482 | 28 | writing the relocations here. */ |
252b5132 | 29 | |
5b6a02bc TS |
30 | /* TODO: Many things are unsupported, even if there is some code for it |
31 | . (which was mostly stolen from elf32-mips.c and slightly adapted). | |
32 | . | |
33 | . - Relocation handling for REL relocs is wrong in many cases and | |
34 | . generally untested. | |
35 | . - Relocation handling for RELA relocs related to GOT support are | |
36 | . also likely to be wrong. | |
37 | . - Support for MIPS16 is only partially implemented. | |
38 | . - Embedded PIC is only partially implemented (is it needed?). | |
39 | . - Combined relocs with RSS_* entries are unsupported. | |
40 | . - The whole GOT handling for NewABI is missing, some parts of | |
41 | . the OldABI version is still lying around and shold be removed. | |
42 | */ | |
43 | ||
252b5132 RH |
44 | #include "bfd.h" |
45 | #include "sysdep.h" | |
46 | #include "libbfd.h" | |
47 | #include "aout/ar.h" | |
48 | #include "bfdlink.h" | |
49 | #include "genlink.h" | |
50 | #include "elf-bfd.h" | |
51 | #include "elf/mips.h" | |
52 | ||
53 | /* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to | |
54 | use ECOFF. However, we support it anyhow for an easier changeover. */ | |
55 | #include "coff/sym.h" | |
56 | #include "coff/symconst.h" | |
57 | #include "coff/internal.h" | |
58 | #include "coff/ecoff.h" | |
59 | /* The 64 bit versions of the mdebug data structures are in alpha.h. */ | |
60 | #include "coff/alpha.h" | |
23e2c83b | 61 | #define ECOFF_SIGNED_64 |
252b5132 RH |
62 | #include "ecoffswap.h" |
63 | ||
5b6a02bc TS |
64 | struct mips_elf64_link_hash_entry; |
65 | ||
252b5132 RH |
66 | static void mips_elf64_swap_reloc_in |
67 | PARAMS ((bfd *, const Elf64_Mips_External_Rel *, | |
68 | Elf64_Mips_Internal_Rel *)); | |
69 | static void mips_elf64_swap_reloca_in | |
70 | PARAMS ((bfd *, const Elf64_Mips_External_Rela *, | |
71 | Elf64_Mips_Internal_Rela *)); | |
252b5132 RH |
72 | static void mips_elf64_swap_reloc_out |
73 | PARAMS ((bfd *, const Elf64_Mips_Internal_Rel *, | |
74 | Elf64_Mips_External_Rel *)); | |
252b5132 RH |
75 | static void mips_elf64_swap_reloca_out |
76 | PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *, | |
77 | Elf64_Mips_External_Rela *)); | |
c7ac6ff8 MM |
78 | static void mips_elf64_be_swap_reloc_in |
79 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *)); | |
80 | static void mips_elf64_be_swap_reloc_out | |
81 | PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *)); | |
82 | static void mips_elf64_be_swap_reloca_in | |
83 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); | |
84 | static void mips_elf64_be_swap_reloca_out | |
85 | PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); | |
5b6a02bc TS |
86 | static bfd_vma mips_elf64_high PARAMS ((bfd_vma)); |
87 | static bfd_vma mips_elf64_higher PARAMS ((bfd_vma)); | |
88 | static bfd_vma mips_elf64_highest PARAMS ((bfd_vma)); | |
252b5132 RH |
89 | static reloc_howto_type *mips_elf64_reloc_type_lookup |
90 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
5b6a02bc TS |
91 | static void mips_elf64_info_to_howto_rel |
92 | PARAMS ((bfd *, arelent *, Elf64_Internal_Rel *)); | |
93 | static void mips_elf64_info_to_howto_rela | |
94 | PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *)); | |
252b5132 RH |
95 | static long mips_elf64_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
96 | static boolean mips_elf64_slurp_one_reloc_table | |
97 | PARAMS ((bfd *, asection *, asymbol **, const Elf_Internal_Shdr *)); | |
98 | static boolean mips_elf64_slurp_reloc_table | |
99 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
100 | static void mips_elf64_write_relocs PARAMS ((bfd *, asection *, PTR)); | |
5b6a02bc TS |
101 | static void mips_elf64_write_rel |
102 | PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); | |
103 | static void mips_elf64_write_rela | |
104 | PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); | |
105 | static struct bfd_hash_entry *mips_elf64_link_hash_newfunc | |
106 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
107 | static bfd_reloc_status_type mips_elf64_hi16_reloc | |
108 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
109 | static bfd_reloc_status_type mips_elf64_higher_reloc | |
110 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
111 | static bfd_reloc_status_type mips_elf64_highest_reloc | |
112 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
113 | static bfd_reloc_status_type mips_elf64_gprel16_reloc | |
114 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
115 | static bfd_reloc_status_type mips_elf64_gprel16_reloca | |
116 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
117 | static bfd_reloc_status_type mips_elf64_literal_reloc | |
118 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
119 | static bfd_reloc_status_type mips_elf64_gprel32_reloc | |
120 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
121 | static bfd_reloc_status_type mips_elf64_shift6_reloc | |
122 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
123 | static bfd_reloc_status_type mips_elf64_got16_reloc | |
124 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
125 | static boolean mips_elf64_assign_gp PARAMS ((bfd *, bfd_vma *)); | |
126 | static bfd_reloc_status_type mips_elf64_final_gp | |
127 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); | |
128 | static bfd_reloc_status_type gprel16_with_gp | |
129 | PARAMS ((bfd *, asymbol *, arelent *, asection *, boolean, PTR, bfd_vma)); | |
130 | static int mips_elf64_additional_program_headers PARAMS ((bfd *)); | |
131 | static struct bfd_link_hash_table *mips_elf64_link_hash_table_create | |
132 | PARAMS((bfd *)); | |
133 | static bfd_vma mips_elf64_got_offset_from_index | |
134 | PARAMS ((bfd *, bfd *, bfd_vma)); | |
135 | static struct mips_elf64_got_info *_mips_elf64_got_info | |
136 | PARAMS ((bfd *, asection **)); | |
137 | static bfd_vma mips_elf64_sign_extend PARAMS ((bfd_vma, int)); | |
138 | static boolean mips_elf64_overflow_p PARAMS ((bfd_vma, int)); | |
139 | static bfd_vma mips_elf64_global_got_index | |
140 | PARAMS ((bfd *, struct elf_link_hash_entry *)); | |
141 | static boolean mips_elf64_sort_hash_table_f | |
142 | PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); | |
143 | static boolean mips_elf64_sort_hash_table | |
144 | PARAMS ((struct bfd_link_info *, unsigned long)); | |
145 | static void mips_elf64_swap_msym_out | |
146 | PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *)); | |
147 | static bfd_vma mips_elf64_create_local_got_entry | |
148 | PARAMS ((bfd *abfd, struct mips_elf64_got_info *, asection *, | |
149 | bfd_vma value)); | |
150 | static bfd_vma mips_elf64_local_got_index | |
151 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma)); | |
152 | static bfd_vma mips_elf64_got_page | |
153 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *)); | |
154 | static bfd_vma mips_elf64_got16_entry | |
155 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean)); | |
156 | static boolean mips_elf64_local_relocation_p | |
157 | PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean)); | |
158 | static const Elf_Internal_Rela *mips_elf64_next_relocation | |
159 | PARAMS ((unsigned int, const Elf_Internal_Rela *, | |
160 | const Elf_Internal_Rela *)); | |
161 | static boolean mips_elf64_create_dynamic_relocation | |
162 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, | |
163 | struct mips_elf64_link_hash_entry *, asection *, bfd_vma, | |
a17aee54 | 164 | bfd_vma *, asection *)); |
5b6a02bc TS |
165 | static bfd_reloc_status_type mips_elf64_calculate_relocation |
166 | PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *, | |
167 | const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *, | |
a17aee54 TS |
168 | Elf_Internal_Sym *, asection **, bfd_vma *, const char **, |
169 | boolean *)); | |
5b6a02bc TS |
170 | static bfd_vma mips_elf64_obtain_contents |
171 | PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *)); | |
172 | static boolean mips_elf64_perform_relocation | |
a17aee54 TS |
173 | PARAMS ((struct bfd_link_info *, reloc_howto_type *, |
174 | const Elf_Internal_Rela *, bfd_vma, | |
175 | bfd *, asection *, bfd_byte *, boolean)); | |
5b6a02bc TS |
176 | static boolean mips_elf64_relocate_section |
177 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
178 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
179 | boolean mips_elf64_create_dynamic_sections | |
180 | PARAMS ((bfd *, struct bfd_link_info *)); | |
181 | boolean mips_elf64_adjust_dynamic_symbol | |
182 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *h)); | |
183 | boolean mips_elf64_always_size_sections | |
184 | PARAMS ((bfd *, struct bfd_link_info *)); | |
a17aee54 TS |
185 | static boolean mips_elf64_check_mips16_stubs |
186 | PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); | |
5b6a02bc TS |
187 | boolean mips_elf64_size_dynamic_sections |
188 | PARAMS ((bfd *, struct bfd_link_info *)); | |
189 | boolean mips_elf64_finish_dynamic_symbol | |
190 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
191 | Elf_Internal_Sym *)); | |
192 | boolean mips_elf64_finish_dynamic_sections | |
193 | PARAMS ((bfd *, struct bfd_link_info *info)); | |
194 | asection *mips_elf64_gc_mark_hook | |
195 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
196 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
197 | boolean mips_elf64_gc_sweep_hook | |
198 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
199 | const Elf_Internal_Rela *)); | |
200 | static boolean mips_elf64_create_got_section | |
201 | PARAMS ((bfd *, struct bfd_link_info *)); | |
202 | static boolean mips_elf64_record_global_got_symbol | |
203 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *, | |
204 | struct mips_elf64_got_info *)); | |
205 | static asection *mips_elf64_create_msym_section PARAMS((bfd *)); | |
206 | static void mips_elf64_allocate_dynamic_relocations | |
207 | PARAMS ((bfd *, unsigned int)); | |
a17aee54 | 208 | static boolean mips_elf64_stub_section_p PARAMS ((bfd *, asection *)); |
5b6a02bc TS |
209 | boolean mips_elf64_check_relocs |
210 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
211 | const Elf_Internal_Rela *)); | |
212 | static boolean mips_elf64_output_extsym | |
213 | PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); | |
214 | static void mips_elf64_swap_gptab_in | |
215 | PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); | |
216 | static void mips_elf64_swap_gptab_out | |
217 | PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); | |
218 | static int gptab_compare PARAMS ((const PTR, const PTR)); | |
219 | boolean mips_elf64_final_link PARAMS ((bfd *, struct bfd_link_info *)); | |
220 | ||
221 | extern const bfd_target bfd_elf64_bigmips_vec; | |
222 | extern const bfd_target bfd_elf64_littlemips_vec; | |
223 | ||
224 | static bfd_vma prev_reloc_addend = 0; | |
225 | static bfd_size_type prev_reloc_address = 0; | |
226 | ||
227 | /* Whether we are trying to be compatible with IRIX6 (or little endianers | |
228 | which are otherwise IRIX-ABI compliant). */ | |
229 | #define SGI_COMPAT(abfd) \ | |
230 | ((abfd->xvec == &bfd_elf64_bigmips_vec) \ | |
231 | || (abfd->xvec == &bfd_elf64_littlemips_vec) ? true : false) | |
252b5132 RH |
232 | |
233 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
234 | from smaller values. Start with zero, widen, *then* decrement. */ | |
235 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
236 | ||
103186c6 MM |
237 | /* The number of local .got entries we reserve. */ |
238 | #define MIPS_RESERVED_GOTNO (2) | |
239 | ||
5b6a02bc TS |
240 | /* Instructions which appear in a stub. */ |
241 | #define ELF_MIPS_GP_OFFSET(abfd) 0x7ff0 | |
242 | #define STUB_LW 0xdf998010 /* ld t9,0x8010(gp) */ | |
243 | #define STUB_MOVE 0x03e07825 /* move t7,ra */ | |
244 | #define STUB_JALR 0x0320f809 /* jal t9 */ | |
245 | #define STUB_LI16 0x34180000 /* ori t8,zero,0 */ | |
246 | #define MIPS_FUNCTION_STUB_SIZE (16) | |
247 | ||
252b5132 RH |
248 | /* The relocation table used for SHT_REL sections. */ |
249 | ||
5e572849 AM |
250 | #define UNUSED_RELOC(num) { num, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } |
251 | ||
252b5132 RH |
252 | static reloc_howto_type mips_elf64_howto_table_rel[] = |
253 | { | |
254 | /* No relocation. */ | |
255 | HOWTO (R_MIPS_NONE, /* type */ | |
256 | 0, /* rightshift */ | |
257 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 0, /* bitsize */ | |
259 | false, /* pc_relative */ | |
260 | 0, /* bitpos */ | |
261 | complain_overflow_dont, /* complain_on_overflow */ | |
262 | bfd_elf_generic_reloc, /* special_function */ | |
263 | "R_MIPS_NONE", /* name */ | |
264 | false, /* partial_inplace */ | |
265 | 0, /* src_mask */ | |
266 | 0, /* dst_mask */ | |
267 | false), /* pcrel_offset */ | |
268 | ||
269 | /* 16 bit relocation. */ | |
270 | HOWTO (R_MIPS_16, /* type */ | |
271 | 0, /* rightshift */ | |
5b6a02bc | 272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
273 | 16, /* bitsize */ |
274 | false, /* pc_relative */ | |
275 | 0, /* bitpos */ | |
5b6a02bc | 276 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
277 | bfd_elf_generic_reloc, /* special_function */ |
278 | "R_MIPS_16", /* name */ | |
279 | true, /* partial_inplace */ | |
5b6a02bc TS |
280 | 0x0000ffff, /* src_mask */ |
281 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
282 | false), /* pcrel_offset */ |
283 | ||
284 | /* 32 bit relocation. */ | |
285 | HOWTO (R_MIPS_32, /* type */ | |
286 | 0, /* rightshift */ | |
287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 32, /* bitsize */ | |
289 | false, /* pc_relative */ | |
290 | 0, /* bitpos */ | |
77bfe34f | 291 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
292 | bfd_elf_generic_reloc, /* special_function */ |
293 | "R_MIPS_32", /* name */ | |
294 | true, /* partial_inplace */ | |
295 | 0xffffffff, /* src_mask */ | |
296 | 0xffffffff, /* dst_mask */ | |
297 | false), /* pcrel_offset */ | |
298 | ||
299 | /* 32 bit symbol relative relocation. */ | |
300 | HOWTO (R_MIPS_REL32, /* type */ | |
301 | 0, /* rightshift */ | |
302 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
303 | 32, /* bitsize */ | |
304 | false, /* pc_relative */ | |
305 | 0, /* bitpos */ | |
77bfe34f | 306 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
307 | bfd_elf_generic_reloc, /* special_function */ |
308 | "R_MIPS_REL32", /* name */ | |
309 | true, /* partial_inplace */ | |
310 | 0xffffffff, /* src_mask */ | |
311 | 0xffffffff, /* dst_mask */ | |
312 | false), /* pcrel_offset */ | |
313 | ||
77bfe34f | 314 | /* 26 bit jump address. */ |
252b5132 RH |
315 | HOWTO (R_MIPS_26, /* type */ |
316 | 2, /* rightshift */ | |
317 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
318 | 26, /* bitsize */ | |
319 | false, /* pc_relative */ | |
320 | 0, /* bitpos */ | |
321 | complain_overflow_dont, /* complain_on_overflow */ | |
56fc028e | 322 | /* This needs complex overflow |
77bfe34f | 323 | detection, because the upper 36 |
b401d8e5 | 324 | bits must match the PC + 4. */ |
252b5132 RH |
325 | bfd_elf_generic_reloc, /* special_function */ |
326 | "R_MIPS_26", /* name */ | |
327 | true, /* partial_inplace */ | |
5b6a02bc TS |
328 | 0x03ffffff, /* src_mask */ |
329 | 0x03ffffff, /* dst_mask */ | |
252b5132 RH |
330 | false), /* pcrel_offset */ |
331 | ||
332 | /* High 16 bits of symbol value. */ | |
333 | HOWTO (R_MIPS_HI16, /* type */ | |
334 | 0, /* rightshift */ | |
335 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
336 | 16, /* bitsize */ | |
337 | false, /* pc_relative */ | |
338 | 0, /* bitpos */ | |
339 | complain_overflow_dont, /* complain_on_overflow */ | |
5b6a02bc | 340 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 RH |
341 | "R_MIPS_HI16", /* name */ |
342 | true, /* partial_inplace */ | |
5b6a02bc TS |
343 | 0x0000ffff, /* src_mask */ |
344 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
345 | false), /* pcrel_offset */ |
346 | ||
347 | /* Low 16 bits of symbol value. */ | |
348 | HOWTO (R_MIPS_LO16, /* type */ | |
349 | 0, /* rightshift */ | |
350 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
351 | 16, /* bitsize */ | |
352 | false, /* pc_relative */ | |
353 | 0, /* bitpos */ | |
354 | complain_overflow_dont, /* complain_on_overflow */ | |
5b6a02bc | 355 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 RH |
356 | "R_MIPS_LO16", /* name */ |
357 | true, /* partial_inplace */ | |
5b6a02bc TS |
358 | 0x0000ffff, /* src_mask */ |
359 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
360 | false), /* pcrel_offset */ |
361 | ||
362 | /* GP relative reference. */ | |
363 | HOWTO (R_MIPS_GPREL16, /* type */ | |
364 | 0, /* rightshift */ | |
365 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
366 | 16, /* bitsize */ | |
367 | false, /* pc_relative */ | |
368 | 0, /* bitpos */ | |
369 | complain_overflow_signed, /* complain_on_overflow */ | |
5b6a02bc | 370 | mips_elf64_gprel16_reloc, /* special_function */ |
252b5132 RH |
371 | "R_MIPS_GPREL16", /* name */ |
372 | true, /* partial_inplace */ | |
5b6a02bc TS |
373 | 0x0000ffff, /* src_mask */ |
374 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
375 | false), /* pcrel_offset */ |
376 | ||
377 | /* Reference to literal section. */ | |
378 | HOWTO (R_MIPS_LITERAL, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 16, /* bitsize */ | |
382 | false, /* pc_relative */ | |
383 | 0, /* bitpos */ | |
384 | complain_overflow_signed, /* complain_on_overflow */ | |
5b6a02bc | 385 | mips_elf64_literal_reloc, /* special_function */ |
252b5132 RH |
386 | "R_MIPS_LITERAL", /* name */ |
387 | true, /* partial_inplace */ | |
5b6a02bc TS |
388 | 0x0000ffff, /* src_mask */ |
389 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
390 | false), /* pcrel_offset */ |
391 | ||
392 | /* Reference to global offset table. */ | |
393 | HOWTO (R_MIPS_GOT16, /* type */ | |
394 | 0, /* rightshift */ | |
395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
396 | 16, /* bitsize */ | |
397 | false, /* pc_relative */ | |
398 | 0, /* bitpos */ | |
399 | complain_overflow_signed, /* complain_on_overflow */ | |
5b6a02bc | 400 | mips_elf64_got16_reloc, /* special_function */ |
252b5132 | 401 | "R_MIPS_GOT16", /* name */ |
5b6a02bc TS |
402 | true, /* partial_inplace */ |
403 | 0x0000ffff, /* src_mask */ | |
404 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
405 | false), /* pcrel_offset */ |
406 | ||
407 | /* 16 bit PC relative reference. */ | |
408 | HOWTO (R_MIPS_PC16, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 16, /* bitsize */ | |
412 | true, /* pc_relative */ | |
413 | 0, /* bitpos */ | |
414 | complain_overflow_signed, /* complain_on_overflow */ | |
415 | bfd_elf_generic_reloc, /* special_function */ | |
416 | "R_MIPS_PC16", /* name */ | |
417 | true, /* partial_inplace */ | |
5b6a02bc TS |
418 | 0x0000ffff, /* src_mask */ |
419 | 0x0000ffff, /* dst_mask */ | |
420 | true), /* pcrel_offset */ | |
252b5132 RH |
421 | |
422 | /* 16 bit call through global offset table. */ | |
423 | /* FIXME: This is not handled correctly. */ | |
424 | HOWTO (R_MIPS_CALL16, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 16, /* bitsize */ | |
428 | false, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
431 | bfd_elf_generic_reloc, /* special_function */ | |
432 | "R_MIPS_CALL16", /* name */ | |
5b6a02bc TS |
433 | true, /* partial_inplace */ |
434 | 0x0000ffff, /* src_mask */ | |
435 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
436 | false), /* pcrel_offset */ |
437 | ||
438 | /* 32 bit GP relative reference. */ | |
439 | HOWTO (R_MIPS_GPREL32, /* type */ | |
440 | 0, /* rightshift */ | |
441 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
442 | 32, /* bitsize */ | |
443 | false, /* pc_relative */ | |
444 | 0, /* bitpos */ | |
5b6a02bc TS |
445 | complain_overflow_dont, /* complain_on_overflow */ |
446 | mips_elf64_gprel32_reloc, /* special_function */ | |
252b5132 RH |
447 | "R_MIPS_GPREL32", /* name */ |
448 | true, /* partial_inplace */ | |
449 | 0xffffffff, /* src_mask */ | |
450 | 0xffffffff, /* dst_mask */ | |
451 | false), /* pcrel_offset */ | |
452 | ||
5e572849 AM |
453 | UNUSED_RELOC (13), |
454 | UNUSED_RELOC (14), | |
455 | UNUSED_RELOC (15), | |
252b5132 RH |
456 | |
457 | /* A 5 bit shift field. */ | |
458 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
459 | 0, /* rightshift */ | |
460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 5, /* bitsize */ | |
462 | false, /* pc_relative */ | |
463 | 6, /* bitpos */ | |
464 | complain_overflow_bitfield, /* complain_on_overflow */ | |
465 | bfd_elf_generic_reloc, /* special_function */ | |
466 | "R_MIPS_SHIFT5", /* name */ | |
467 | true, /* partial_inplace */ | |
468 | 0x000007c0, /* src_mask */ | |
469 | 0x000007c0, /* dst_mask */ | |
470 | false), /* pcrel_offset */ | |
471 | ||
472 | /* A 6 bit shift field. */ | |
252b5132 RH |
473 | HOWTO (R_MIPS_SHIFT6, /* type */ |
474 | 0, /* rightshift */ | |
475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
476 | 6, /* bitsize */ | |
477 | false, /* pc_relative */ | |
478 | 6, /* bitpos */ | |
479 | complain_overflow_bitfield, /* complain_on_overflow */ | |
5b6a02bc | 480 | mips_elf64_shift6_reloc, /* special_function */ |
252b5132 RH |
481 | "R_MIPS_SHIFT6", /* name */ |
482 | true, /* partial_inplace */ | |
483 | 0x000007c4, /* src_mask */ | |
484 | 0x000007c4, /* dst_mask */ | |
485 | false), /* pcrel_offset */ | |
486 | ||
487 | /* 64 bit relocation. */ | |
488 | HOWTO (R_MIPS_64, /* type */ | |
489 | 0, /* rightshift */ | |
490 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
491 | 64, /* bitsize */ | |
492 | false, /* pc_relative */ | |
493 | 0, /* bitpos */ | |
77bfe34f | 494 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
495 | bfd_elf_generic_reloc, /* special_function */ |
496 | "R_MIPS_64", /* name */ | |
497 | true, /* partial_inplace */ | |
498 | MINUS_ONE, /* src_mask */ | |
499 | MINUS_ONE, /* dst_mask */ | |
500 | false), /* pcrel_offset */ | |
501 | ||
502 | /* Displacement in the global offset table. */ | |
503 | /* FIXME: Not handled correctly. */ | |
504 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
505 | 0, /* rightshift */ | |
506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
507 | 16, /* bitsize */ | |
508 | false, /* pc_relative */ | |
509 | 0, /* bitpos */ | |
77bfe34f | 510 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
511 | bfd_elf_generic_reloc, /* special_function */ |
512 | "R_MIPS_GOT_DISP", /* name */ | |
5b6a02bc | 513 | true, /* partial_inplace */ |
252b5132 RH |
514 | 0x0000ffff, /* src_mask */ |
515 | 0x0000ffff, /* dst_mask */ | |
516 | false), /* pcrel_offset */ | |
517 | ||
518 | /* Displacement to page pointer in the global offset table. */ | |
519 | /* FIXME: Not handled correctly. */ | |
520 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
521 | 0, /* rightshift */ | |
522 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
523 | 16, /* bitsize */ | |
524 | false, /* pc_relative */ | |
525 | 0, /* bitpos */ | |
77bfe34f | 526 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
527 | bfd_elf_generic_reloc, /* special_function */ |
528 | "R_MIPS_GOT_PAGE", /* name */ | |
5b6a02bc | 529 | true, /* partial_inplace */ |
252b5132 RH |
530 | 0x0000ffff, /* src_mask */ |
531 | 0x0000ffff, /* dst_mask */ | |
532 | false), /* pcrel_offset */ | |
533 | ||
534 | /* Offset from page pointer in the global offset table. */ | |
535 | /* FIXME: Not handled correctly. */ | |
536 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
537 | 0, /* rightshift */ | |
538 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
539 | 16, /* bitsize */ | |
540 | false, /* pc_relative */ | |
541 | 0, /* bitpos */ | |
77bfe34f | 542 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
543 | bfd_elf_generic_reloc, /* special_function */ |
544 | "R_MIPS_GOT_OFST", /* name */ | |
5b6a02bc | 545 | true, /* partial_inplace */ |
252b5132 RH |
546 | 0x0000ffff, /* src_mask */ |
547 | 0x0000ffff, /* dst_mask */ | |
548 | false), /* pcrel_offset */ | |
549 | ||
550 | /* High 16 bits of displacement in global offset table. */ | |
551 | /* FIXME: Not handled correctly. */ | |
552 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
553 | 0, /* rightshift */ | |
554 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
555 | 16, /* bitsize */ | |
556 | false, /* pc_relative */ | |
557 | 0, /* bitpos */ | |
558 | complain_overflow_dont, /* complain_on_overflow */ | |
559 | bfd_elf_generic_reloc, /* special_function */ | |
560 | "R_MIPS_GOT_HI16", /* name */ | |
5b6a02bc | 561 | true, /* partial_inplace */ |
252b5132 RH |
562 | 0x0000ffff, /* src_mask */ |
563 | 0x0000ffff, /* dst_mask */ | |
564 | false), /* pcrel_offset */ | |
565 | ||
566 | /* Low 16 bits of displacement in global offset table. */ | |
567 | /* FIXME: Not handled correctly. */ | |
568 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
569 | 0, /* rightshift */ | |
570 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
571 | 16, /* bitsize */ | |
572 | false, /* pc_relative */ | |
573 | 0, /* bitpos */ | |
574 | complain_overflow_dont, /* complain_on_overflow */ | |
575 | bfd_elf_generic_reloc, /* special_function */ | |
576 | "R_MIPS_GOT_LO16", /* name */ | |
5b6a02bc | 577 | true, /* partial_inplace */ |
252b5132 RH |
578 | 0x0000ffff, /* src_mask */ |
579 | 0x0000ffff, /* dst_mask */ | |
580 | false), /* pcrel_offset */ | |
581 | ||
582 | /* 64 bit substraction. */ | |
583 | /* FIXME: Not handled correctly. */ | |
584 | HOWTO (R_MIPS_SUB, /* type */ | |
585 | 0, /* rightshift */ | |
586 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
587 | 64, /* bitsize */ | |
588 | false, /* pc_relative */ | |
589 | 0, /* bitpos */ | |
77bfe34f | 590 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
591 | bfd_elf_generic_reloc, /* special_function */ |
592 | "R_MIPS_SUB", /* name */ | |
593 | true, /* partial_inplace */ | |
594 | MINUS_ONE, /* src_mask */ | |
595 | MINUS_ONE, /* dst_mask */ | |
596 | false), /* pcrel_offset */ | |
597 | ||
598 | /* Insert the addend as an instruction. */ | |
599 | /* FIXME: Not handled correctly. */ | |
600 | HOWTO (R_MIPS_INSERT_A, /* type */ | |
601 | 0, /* rightshift */ | |
77bfe34f TS |
602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
603 | 32, /* bitsize */ | |
252b5132 RH |
604 | false, /* pc_relative */ |
605 | 0, /* bitpos */ | |
606 | complain_overflow_dont, /* complain_on_overflow */ | |
607 | bfd_elf_generic_reloc, /* special_function */ | |
608 | "R_MIPS_INSERT_A", /* name */ | |
77bfe34f TS |
609 | true, /* partial_inplace */ |
610 | 0xffffffff, /* src_mask */ | |
611 | 0xffffffff, /* dst_mask */ | |
252b5132 RH |
612 | false), /* pcrel_offset */ |
613 | ||
614 | /* Insert the addend as an instruction, and change all relocations | |
615 | to refer to the old instruction at the address. */ | |
616 | /* FIXME: Not handled correctly. */ | |
617 | HOWTO (R_MIPS_INSERT_B, /* type */ | |
618 | 0, /* rightshift */ | |
77bfe34f TS |
619 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
620 | 32, /* bitsize */ | |
252b5132 RH |
621 | false, /* pc_relative */ |
622 | 0, /* bitpos */ | |
623 | complain_overflow_dont, /* complain_on_overflow */ | |
624 | bfd_elf_generic_reloc, /* special_function */ | |
625 | "R_MIPS_INSERT_B", /* name */ | |
77bfe34f TS |
626 | true, /* partial_inplace */ |
627 | 0xffffffff, /* src_mask */ | |
628 | 0xffffffff, /* dst_mask */ | |
252b5132 RH |
629 | false), /* pcrel_offset */ |
630 | ||
631 | /* Delete a 32 bit instruction. */ | |
632 | /* FIXME: Not handled correctly. */ | |
633 | HOWTO (R_MIPS_DELETE, /* type */ | |
634 | 0, /* rightshift */ | |
77bfe34f TS |
635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
636 | 32, /* bitsize */ | |
252b5132 RH |
637 | false, /* pc_relative */ |
638 | 0, /* bitpos */ | |
639 | complain_overflow_dont, /* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
641 | "R_MIPS_DELETE", /* name */ | |
77bfe34f TS |
642 | true, /* partial_inplace */ |
643 | 0xffffffff, /* src_mask */ | |
644 | 0xffffffff, /* dst_mask */ | |
252b5132 RH |
645 | false), /* pcrel_offset */ |
646 | ||
647 | /* Get the higher value of a 64 bit addend. */ | |
252b5132 RH |
648 | HOWTO (R_MIPS_HIGHER, /* type */ |
649 | 0, /* rightshift */ | |
650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 16, /* bitsize */ | |
652 | false, /* pc_relative */ | |
653 | 0, /* bitpos */ | |
654 | complain_overflow_dont, /* complain_on_overflow */ | |
5b6a02bc | 655 | mips_elf64_higher_reloc, /* special_function */ |
252b5132 RH |
656 | "R_MIPS_HIGHER", /* name */ |
657 | true, /* partial_inplace */ | |
5b6a02bc TS |
658 | 0x0000ffff, /* src_mask */ |
659 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
660 | false), /* pcrel_offset */ |
661 | ||
662 | /* Get the highest value of a 64 bit addend. */ | |
252b5132 RH |
663 | HOWTO (R_MIPS_HIGHEST, /* type */ |
664 | 0, /* rightshift */ | |
665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 16, /* bitsize */ | |
667 | false, /* pc_relative */ | |
668 | 0, /* bitpos */ | |
669 | complain_overflow_dont, /* complain_on_overflow */ | |
5b6a02bc | 670 | mips_elf64_highest_reloc, /* special_function */ |
252b5132 RH |
671 | "R_MIPS_HIGHEST", /* name */ |
672 | true, /* partial_inplace */ | |
5b6a02bc TS |
673 | 0x0000ffff, /* src_mask */ |
674 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
675 | false), /* pcrel_offset */ |
676 | ||
677 | /* High 16 bits of displacement in global offset table. */ | |
678 | /* FIXME: Not handled correctly. */ | |
679 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
680 | 0, /* rightshift */ | |
681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
682 | 16, /* bitsize */ | |
683 | false, /* pc_relative */ | |
684 | 0, /* bitpos */ | |
685 | complain_overflow_dont, /* complain_on_overflow */ | |
686 | bfd_elf_generic_reloc, /* special_function */ | |
687 | "R_MIPS_CALL_HI16", /* name */ | |
688 | true, /* partial_inplace */ | |
5b6a02bc TS |
689 | 0x0000ffff, /* src_mask */ |
690 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
691 | false), /* pcrel_offset */ |
692 | ||
693 | /* Low 16 bits of displacement in global offset table. */ | |
694 | /* FIXME: Not handled correctly. */ | |
695 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
696 | 0, /* rightshift */ | |
697 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
698 | 16, /* bitsize */ | |
699 | false, /* pc_relative */ | |
700 | 0, /* bitpos */ | |
701 | complain_overflow_dont, /* complain_on_overflow */ | |
702 | bfd_elf_generic_reloc, /* special_function */ | |
703 | "R_MIPS_CALL_LO16", /* name */ | |
704 | true, /* partial_inplace */ | |
5b6a02bc TS |
705 | 0x0000ffff, /* src_mask */ |
706 | 0x0000ffff, /* dst_mask */ | |
252b5132 RH |
707 | false), /* pcrel_offset */ |
708 | ||
5b6a02bc TS |
709 | /* Section displacement, used by an associated event location section. */ |
710 | /* FIXME: Not handled correctly. */ | |
252b5132 RH |
711 | HOWTO (R_MIPS_SCN_DISP, /* type */ |
712 | 0, /* rightshift */ | |
77bfe34f TS |
713 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
714 | 32, /* bitsize */ | |
252b5132 RH |
715 | false, /* pc_relative */ |
716 | 0, /* bitpos */ | |
717 | complain_overflow_dont, /* complain_on_overflow */ | |
718 | bfd_elf_generic_reloc, /* special_function */ | |
719 | "R_MIPS_SCN_DISP", /* name */ | |
77bfe34f TS |
720 | true, /* partial_inplace */ |
721 | 0xffffffff, /* src_mask */ | |
722 | 0xffffffff, /* dst_mask */ | |
252b5132 RH |
723 | false), /* pcrel_offset */ |
724 | ||
725 | HOWTO (R_MIPS_REL16, /* type */ | |
726 | 0, /* rightshift */ | |
77bfe34f TS |
727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
728 | 16, /* bitsize */ | |
252b5132 RH |
729 | false, /* pc_relative */ |
730 | 0, /* bitpos */ | |
77bfe34f | 731 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
732 | bfd_elf_generic_reloc, /* special_function */ |
733 | "R_MIPS_REL16", /* name */ | |
77bfe34f TS |
734 | true, /* partial_inplace */ |
735 | 0xffff, /* src_mask */ | |
736 | 0xffff, /* dst_mask */ | |
252b5132 RH |
737 | false), /* pcrel_offset */ |
738 | ||
77bfe34f TS |
739 | /* These two are obsolete. */ |
740 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
741 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
252b5132 | 742 | |
5b6a02bc TS |
743 | /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. |
744 | It must be used for multigot GOT's (and only there). */ | |
252b5132 RH |
745 | HOWTO (R_MIPS_RELGOT, /* type */ |
746 | 0, /* rightshift */ | |
77bfe34f TS |
747 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
748 | 32, /* bitsize */ | |
252b5132 RH |
749 | false, /* pc_relative */ |
750 | 0, /* bitpos */ | |
751 | complain_overflow_dont, /* complain_on_overflow */ | |
752 | bfd_elf_generic_reloc, /* special_function */ | |
753 | "R_MIPS_RELGOT", /* name */ | |
77bfe34f TS |
754 | true, /* partial_inplace */ |
755 | 0xffffffff, /* src_mask */ | |
756 | 0xffffffff, /* dst_mask */ | |
d2905643 MM |
757 | false), /* pcrel_offset */ |
758 | ||
fe8bc63d | 759 | /* Protected jump conversion. This is an optimization hint. No |
d2905643 MM |
760 | relocation is required for correctness. */ |
761 | HOWTO (R_MIPS_JALR, /* type */ | |
762 | 0, /* rightshift */ | |
77bfe34f | 763 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
5b6a02bc | 764 | 32, /* bitsize */ |
d2905643 MM |
765 | false, /* pc_relative */ |
766 | 0, /* bitpos */ | |
767 | complain_overflow_dont, /* complain_on_overflow */ | |
768 | bfd_elf_generic_reloc, /* special_function */ | |
769 | "R_MIPS_JALR", /* name */ | |
770 | false, /* partial_inplace */ | |
77bfe34f | 771 | 0, /* src_mask */ |
5b6a02bc | 772 | 0x00000000, /* dst_mask */ |
d2905643 | 773 | false), /* pcrel_offset */ |
252b5132 RH |
774 | }; |
775 | ||
776 | /* The relocation table used for SHT_RELA sections. */ | |
777 | ||
778 | static reloc_howto_type mips_elf64_howto_table_rela[] = | |
779 | { | |
780 | /* No relocation. */ | |
781 | HOWTO (R_MIPS_NONE, /* type */ | |
782 | 0, /* rightshift */ | |
783 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 0, /* bitsize */ | |
785 | false, /* pc_relative */ | |
786 | 0, /* bitpos */ | |
787 | complain_overflow_dont, /* complain_on_overflow */ | |
788 | bfd_elf_generic_reloc, /* special_function */ | |
789 | "R_MIPS_NONE", /* name */ | |
790 | false, /* partial_inplace */ | |
791 | 0, /* src_mask */ | |
792 | 0, /* dst_mask */ | |
793 | false), /* pcrel_offset */ | |
794 | ||
795 | /* 16 bit relocation. */ | |
796 | HOWTO (R_MIPS_16, /* type */ | |
797 | 0, /* rightshift */ | |
5b6a02bc | 798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
799 | 16, /* bitsize */ |
800 | false, /* pc_relative */ | |
801 | 0, /* bitpos */ | |
5b6a02bc | 802 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
803 | bfd_elf_generic_reloc, /* special_function */ |
804 | "R_MIPS_16", /* name */ | |
77bfe34f | 805 | false, /* partial_inplace */ |
252b5132 | 806 | 0, /* src_mask */ |
5b6a02bc | 807 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
808 | false), /* pcrel_offset */ |
809 | ||
810 | /* 32 bit relocation. */ | |
811 | HOWTO (R_MIPS_32, /* type */ | |
812 | 0, /* rightshift */ | |
813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
814 | 32, /* bitsize */ | |
815 | false, /* pc_relative */ | |
816 | 0, /* bitpos */ | |
77bfe34f | 817 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
818 | bfd_elf_generic_reloc, /* special_function */ |
819 | "R_MIPS_32", /* name */ | |
77bfe34f | 820 | false, /* partial_inplace */ |
252b5132 RH |
821 | 0, /* src_mask */ |
822 | 0xffffffff, /* dst_mask */ | |
823 | false), /* pcrel_offset */ | |
824 | ||
825 | /* 32 bit symbol relative relocation. */ | |
826 | HOWTO (R_MIPS_REL32, /* type */ | |
827 | 0, /* rightshift */ | |
828 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
829 | 32, /* bitsize */ | |
830 | false, /* pc_relative */ | |
831 | 0, /* bitpos */ | |
77bfe34f | 832 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
833 | bfd_elf_generic_reloc, /* special_function */ |
834 | "R_MIPS_REL32", /* name */ | |
77bfe34f | 835 | false, /* partial_inplace */ |
252b5132 RH |
836 | 0, /* src_mask */ |
837 | 0xffffffff, /* dst_mask */ | |
838 | false), /* pcrel_offset */ | |
839 | ||
77bfe34f | 840 | /* 26 bit jump address. */ |
252b5132 RH |
841 | HOWTO (R_MIPS_26, /* type */ |
842 | 2, /* rightshift */ | |
843 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
844 | 26, /* bitsize */ | |
845 | false, /* pc_relative */ | |
846 | 0, /* bitpos */ | |
847 | complain_overflow_dont, /* complain_on_overflow */ | |
56fc028e | 848 | /* This needs complex overflow |
77bfe34f | 849 | detection, because the upper 36 |
b401d8e5 | 850 | bits must match the PC + 4. */ |
252b5132 RH |
851 | bfd_elf_generic_reloc, /* special_function */ |
852 | "R_MIPS_26", /* name */ | |
77bfe34f | 853 | false, /* partial_inplace */ |
252b5132 | 854 | 0, /* src_mask */ |
5b6a02bc | 855 | 0x03ffffff, /* dst_mask */ |
252b5132 RH |
856 | false), /* pcrel_offset */ |
857 | ||
5b6a02bc | 858 | /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for 64 bit REL. */ |
252b5132 RH |
859 | /* High 16 bits of symbol value. */ |
860 | HOWTO (R_MIPS_HI16, /* type */ | |
861 | 0, /* rightshift */ | |
862 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
863 | 16, /* bitsize */ | |
864 | false, /* pc_relative */ | |
865 | 0, /* bitpos */ | |
866 | complain_overflow_dont, /* complain_on_overflow */ | |
867 | bfd_elf_generic_reloc, /* special_function */ | |
868 | "R_MIPS_HI16", /* name */ | |
77bfe34f | 869 | false, /* partial_inplace */ |
252b5132 | 870 | 0, /* src_mask */ |
5b6a02bc | 871 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
872 | false), /* pcrel_offset */ |
873 | ||
874 | /* Low 16 bits of symbol value. */ | |
875 | HOWTO (R_MIPS_LO16, /* type */ | |
876 | 0, /* rightshift */ | |
877 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
878 | 16, /* bitsize */ | |
879 | false, /* pc_relative */ | |
880 | 0, /* bitpos */ | |
881 | complain_overflow_dont, /* complain_on_overflow */ | |
882 | bfd_elf_generic_reloc, /* special_function */ | |
883 | "R_MIPS_LO16", /* name */ | |
77bfe34f | 884 | false, /* partial_inplace */ |
252b5132 | 885 | 0, /* src_mask */ |
5b6a02bc | 886 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
887 | false), /* pcrel_offset */ |
888 | ||
889 | /* GP relative reference. */ | |
890 | HOWTO (R_MIPS_GPREL16, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 16, /* bitsize */ | |
894 | false, /* pc_relative */ | |
895 | 0, /* bitpos */ | |
896 | complain_overflow_signed, /* complain_on_overflow */ | |
5b6a02bc | 897 | mips_elf64_gprel16_reloca, /* special_function */ |
252b5132 | 898 | "R_MIPS_GPREL16", /* name */ |
5b6a02bc | 899 | false, /* partial_inplace */ |
252b5132 | 900 | 0, /* src_mask */ |
5b6a02bc | 901 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
902 | false), /* pcrel_offset */ |
903 | ||
904 | /* Reference to literal section. */ | |
905 | HOWTO (R_MIPS_LITERAL, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
908 | 16, /* bitsize */ | |
909 | false, /* pc_relative */ | |
910 | 0, /* bitpos */ | |
911 | complain_overflow_signed, /* complain_on_overflow */ | |
5b6a02bc | 912 | mips_elf64_literal_reloc, /* special_function */ |
252b5132 | 913 | "R_MIPS_LITERAL", /* name */ |
5b6a02bc | 914 | false, /* partial_inplace */ |
252b5132 | 915 | 0, /* src_mask */ |
5b6a02bc | 916 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
917 | false), /* pcrel_offset */ |
918 | ||
919 | /* Reference to global offset table. */ | |
920 | /* FIXME: This is not handled correctly. */ | |
921 | HOWTO (R_MIPS_GOT16, /* type */ | |
922 | 0, /* rightshift */ | |
923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 16, /* bitsize */ | |
925 | false, /* pc_relative */ | |
926 | 0, /* bitpos */ | |
927 | complain_overflow_signed, /* complain_on_overflow */ | |
77bfe34f | 928 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 RH |
929 | "R_MIPS_GOT16", /* name */ |
930 | false, /* partial_inplace */ | |
931 | 0, /* src_mask */ | |
5b6a02bc | 932 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
933 | false), /* pcrel_offset */ |
934 | ||
935 | /* 16 bit PC relative reference. */ | |
936 | HOWTO (R_MIPS_PC16, /* type */ | |
937 | 0, /* rightshift */ | |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 16, /* bitsize */ | |
940 | true, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_signed, /* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
944 | "R_MIPS_PC16", /* name */ | |
77bfe34f | 945 | false, /* partial_inplace */ |
252b5132 | 946 | 0, /* src_mask */ |
5b6a02bc TS |
947 | 0x0000ffff, /* dst_mask */ |
948 | true), /* pcrel_offset */ | |
252b5132 RH |
949 | |
950 | /* 16 bit call through global offset table. */ | |
951 | /* FIXME: This is not handled correctly. */ | |
952 | HOWTO (R_MIPS_CALL16, /* type */ | |
953 | 0, /* rightshift */ | |
954 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
955 | 16, /* bitsize */ | |
956 | false, /* pc_relative */ | |
957 | 0, /* bitpos */ | |
958 | complain_overflow_signed, /* complain_on_overflow */ | |
959 | bfd_elf_generic_reloc, /* special_function */ | |
960 | "R_MIPS_CALL16", /* name */ | |
961 | false, /* partial_inplace */ | |
962 | 0, /* src_mask */ | |
5b6a02bc | 963 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
964 | false), /* pcrel_offset */ |
965 | ||
966 | /* 32 bit GP relative reference. */ | |
967 | HOWTO (R_MIPS_GPREL32, /* type */ | |
968 | 0, /* rightshift */ | |
969 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
970 | 32, /* bitsize */ | |
971 | false, /* pc_relative */ | |
972 | 0, /* bitpos */ | |
5b6a02bc TS |
973 | complain_overflow_dont, /* complain_on_overflow */ |
974 | mips_elf64_gprel32_reloc, /* special_function */ | |
252b5132 | 975 | "R_MIPS_GPREL32", /* name */ |
5b6a02bc | 976 | false, /* partial_inplace */ |
252b5132 RH |
977 | 0, /* src_mask */ |
978 | 0xffffffff, /* dst_mask */ | |
979 | false), /* pcrel_offset */ | |
980 | ||
5e572849 AM |
981 | UNUSED_RELOC (13), |
982 | UNUSED_RELOC (14), | |
983 | UNUSED_RELOC (15), | |
252b5132 RH |
984 | |
985 | /* A 5 bit shift field. */ | |
986 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
987 | 0, /* rightshift */ | |
988 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
989 | 5, /* bitsize */ | |
990 | false, /* pc_relative */ | |
991 | 6, /* bitpos */ | |
992 | complain_overflow_bitfield, /* complain_on_overflow */ | |
993 | bfd_elf_generic_reloc, /* special_function */ | |
994 | "R_MIPS_SHIFT5", /* name */ | |
77bfe34f | 995 | false, /* partial_inplace */ |
252b5132 RH |
996 | 0, /* src_mask */ |
997 | 0x000007c0, /* dst_mask */ | |
998 | false), /* pcrel_offset */ | |
999 | ||
1000 | /* A 6 bit shift field. */ | |
252b5132 RH |
1001 | HOWTO (R_MIPS_SHIFT6, /* type */ |
1002 | 0, /* rightshift */ | |
1003 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1004 | 6, /* bitsize */ | |
1005 | false, /* pc_relative */ | |
1006 | 6, /* bitpos */ | |
1007 | complain_overflow_bitfield, /* complain_on_overflow */ | |
5b6a02bc | 1008 | mips_elf64_shift6_reloc, /* special_function */ |
252b5132 | 1009 | "R_MIPS_SHIFT6", /* name */ |
77bfe34f | 1010 | false, /* partial_inplace */ |
252b5132 RH |
1011 | 0, /* src_mask */ |
1012 | 0x000007c4, /* dst_mask */ | |
1013 | false), /* pcrel_offset */ | |
1014 | ||
1015 | /* 64 bit relocation. */ | |
1016 | HOWTO (R_MIPS_64, /* type */ | |
1017 | 0, /* rightshift */ | |
1018 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1019 | 64, /* bitsize */ | |
1020 | false, /* pc_relative */ | |
1021 | 0, /* bitpos */ | |
77bfe34f | 1022 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
1023 | bfd_elf_generic_reloc, /* special_function */ |
1024 | "R_MIPS_64", /* name */ | |
77bfe34f | 1025 | false, /* partial_inplace */ |
252b5132 RH |
1026 | 0, /* src_mask */ |
1027 | MINUS_ONE, /* dst_mask */ | |
1028 | false), /* pcrel_offset */ | |
1029 | ||
1030 | /* Displacement in the global offset table. */ | |
1031 | /* FIXME: Not handled correctly. */ | |
1032 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
1033 | 0, /* rightshift */ | |
1034 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1035 | 16, /* bitsize */ | |
1036 | false, /* pc_relative */ | |
1037 | 0, /* bitpos */ | |
77bfe34f | 1038 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1039 | bfd_elf_generic_reloc, /* special_function */ |
1040 | "R_MIPS_GOT_DISP", /* name */ | |
77bfe34f | 1041 | false, /* partial_inplace */ |
252b5132 RH |
1042 | 0, /* src_mask */ |
1043 | 0x0000ffff, /* dst_mask */ | |
1044 | false), /* pcrel_offset */ | |
1045 | ||
1046 | /* Displacement to page pointer in the global offset table. */ | |
1047 | /* FIXME: Not handled correctly. */ | |
1048 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
1049 | 0, /* rightshift */ | |
1050 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1051 | 16, /* bitsize */ | |
1052 | false, /* pc_relative */ | |
1053 | 0, /* bitpos */ | |
77bfe34f | 1054 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1055 | bfd_elf_generic_reloc, /* special_function */ |
1056 | "R_MIPS_GOT_PAGE", /* name */ | |
77bfe34f | 1057 | false, /* partial_inplace */ |
252b5132 RH |
1058 | 0, /* src_mask */ |
1059 | 0x0000ffff, /* dst_mask */ | |
1060 | false), /* pcrel_offset */ | |
1061 | ||
1062 | /* Offset from page pointer in the global offset table. */ | |
1063 | /* FIXME: Not handled correctly. */ | |
1064 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
1065 | 0, /* rightshift */ | |
1066 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1067 | 16, /* bitsize */ | |
1068 | false, /* pc_relative */ | |
1069 | 0, /* bitpos */ | |
77bfe34f | 1070 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1071 | bfd_elf_generic_reloc, /* special_function */ |
1072 | "R_MIPS_GOT_OFST", /* name */ | |
77bfe34f | 1073 | false, /* partial_inplace */ |
252b5132 RH |
1074 | 0, /* src_mask */ |
1075 | 0x0000ffff, /* dst_mask */ | |
1076 | false), /* pcrel_offset */ | |
1077 | ||
1078 | /* High 16 bits of displacement in global offset table. */ | |
1079 | /* FIXME: Not handled correctly. */ | |
1080 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
1081 | 0, /* rightshift */ | |
1082 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1083 | 16, /* bitsize */ | |
1084 | false, /* pc_relative */ | |
1085 | 0, /* bitpos */ | |
1086 | complain_overflow_dont, /* complain_on_overflow */ | |
1087 | bfd_elf_generic_reloc, /* special_function */ | |
1088 | "R_MIPS_GOT_HI16", /* name */ | |
77bfe34f | 1089 | false, /* partial_inplace */ |
252b5132 RH |
1090 | 0, /* src_mask */ |
1091 | 0x0000ffff, /* dst_mask */ | |
1092 | false), /* pcrel_offset */ | |
1093 | ||
1094 | /* Low 16 bits of displacement in global offset table. */ | |
1095 | /* FIXME: Not handled correctly. */ | |
1096 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
1097 | 0, /* rightshift */ | |
1098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1099 | 16, /* bitsize */ | |
1100 | false, /* pc_relative */ | |
1101 | 0, /* bitpos */ | |
1102 | complain_overflow_dont, /* complain_on_overflow */ | |
1103 | bfd_elf_generic_reloc, /* special_function */ | |
1104 | "R_MIPS_GOT_LO16", /* name */ | |
77bfe34f | 1105 | false, /* partial_inplace */ |
252b5132 RH |
1106 | 0, /* src_mask */ |
1107 | 0x0000ffff, /* dst_mask */ | |
1108 | false), /* pcrel_offset */ | |
1109 | ||
1110 | /* 64 bit substraction. */ | |
1111 | /* FIXME: Not handled correctly. */ | |
1112 | HOWTO (R_MIPS_SUB, /* type */ | |
1113 | 0, /* rightshift */ | |
1114 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1115 | 64, /* bitsize */ | |
1116 | false, /* pc_relative */ | |
1117 | 0, /* bitpos */ | |
77bfe34f | 1118 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
1119 | bfd_elf_generic_reloc, /* special_function */ |
1120 | "R_MIPS_SUB", /* name */ | |
77bfe34f | 1121 | false, /* partial_inplace */ |
252b5132 RH |
1122 | 0, /* src_mask */ |
1123 | MINUS_ONE, /* dst_mask */ | |
1124 | false), /* pcrel_offset */ | |
1125 | ||
1126 | /* Insert the addend as an instruction. */ | |
1127 | /* FIXME: Not handled correctly. */ | |
1128 | HOWTO (R_MIPS_INSERT_A, /* type */ | |
1129 | 0, /* rightshift */ | |
77bfe34f TS |
1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1131 | 32, /* bitsize */ | |
252b5132 RH |
1132 | false, /* pc_relative */ |
1133 | 0, /* bitpos */ | |
1134 | complain_overflow_dont, /* complain_on_overflow */ | |
1135 | bfd_elf_generic_reloc, /* special_function */ | |
1136 | "R_MIPS_INSERT_A", /* name */ | |
1137 | false, /* partial_inplace */ | |
1138 | 0, /* src_mask */ | |
77bfe34f | 1139 | 0xffffffff, /* dst_mask */ |
252b5132 RH |
1140 | false), /* pcrel_offset */ |
1141 | ||
1142 | /* Insert the addend as an instruction, and change all relocations | |
1143 | to refer to the old instruction at the address. */ | |
1144 | /* FIXME: Not handled correctly. */ | |
1145 | HOWTO (R_MIPS_INSERT_B, /* type */ | |
1146 | 0, /* rightshift */ | |
77bfe34f TS |
1147 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1148 | 32, /* bitsize */ | |
252b5132 RH |
1149 | false, /* pc_relative */ |
1150 | 0, /* bitpos */ | |
1151 | complain_overflow_dont, /* complain_on_overflow */ | |
1152 | bfd_elf_generic_reloc, /* special_function */ | |
1153 | "R_MIPS_INSERT_B", /* name */ | |
1154 | false, /* partial_inplace */ | |
1155 | 0, /* src_mask */ | |
77bfe34f | 1156 | 0xffffffff, /* dst_mask */ |
252b5132 RH |
1157 | false), /* pcrel_offset */ |
1158 | ||
1159 | /* Delete a 32 bit instruction. */ | |
1160 | /* FIXME: Not handled correctly. */ | |
1161 | HOWTO (R_MIPS_DELETE, /* type */ | |
1162 | 0, /* rightshift */ | |
77bfe34f TS |
1163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1164 | 32, /* bitsize */ | |
252b5132 RH |
1165 | false, /* pc_relative */ |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont, /* complain_on_overflow */ | |
1168 | bfd_elf_generic_reloc, /* special_function */ | |
1169 | "R_MIPS_DELETE", /* name */ | |
1170 | false, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
77bfe34f | 1172 | 0xffffffff, /* dst_mask */ |
252b5132 RH |
1173 | false), /* pcrel_offset */ |
1174 | ||
1175 | /* Get the higher value of a 64 bit addend. */ | |
252b5132 RH |
1176 | HOWTO (R_MIPS_HIGHER, /* type */ |
1177 | 0, /* rightshift */ | |
1178 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 16, /* bitsize */ | |
1180 | false, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_dont, /* complain_on_overflow */ | |
77bfe34f | 1183 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 1184 | "R_MIPS_HIGHER", /* name */ |
77bfe34f | 1185 | false, /* partial_inplace */ |
252b5132 | 1186 | 0, /* src_mask */ |
5b6a02bc | 1187 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
1188 | false), /* pcrel_offset */ |
1189 | ||
1190 | /* Get the highest value of a 64 bit addend. */ | |
252b5132 RH |
1191 | HOWTO (R_MIPS_HIGHEST, /* type */ |
1192 | 0, /* rightshift */ | |
1193 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | false, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_dont, /* complain_on_overflow */ | |
77bfe34f | 1198 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 1199 | "R_MIPS_HIGHEST", /* name */ |
77bfe34f | 1200 | false, /* partial_inplace */ |
252b5132 | 1201 | 0, /* src_mask */ |
5b6a02bc | 1202 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
1203 | false), /* pcrel_offset */ |
1204 | ||
1205 | /* High 16 bits of displacement in global offset table. */ | |
1206 | /* FIXME: Not handled correctly. */ | |
1207 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
1208 | 0, /* rightshift */ | |
1209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 16, /* bitsize */ | |
1211 | false, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_dont, /* complain_on_overflow */ | |
1214 | bfd_elf_generic_reloc, /* special_function */ | |
1215 | "R_MIPS_CALL_HI16", /* name */ | |
77bfe34f | 1216 | false, /* partial_inplace */ |
252b5132 | 1217 | 0, /* src_mask */ |
5b6a02bc | 1218 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
1219 | false), /* pcrel_offset */ |
1220 | ||
1221 | /* Low 16 bits of displacement in global offset table. */ | |
1222 | /* FIXME: Not handled correctly. */ | |
1223 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
1224 | 0, /* rightshift */ | |
1225 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1226 | 16, /* bitsize */ | |
1227 | false, /* pc_relative */ | |
1228 | 0, /* bitpos */ | |
1229 | complain_overflow_dont, /* complain_on_overflow */ | |
1230 | bfd_elf_generic_reloc, /* special_function */ | |
1231 | "R_MIPS_CALL_LO16", /* name */ | |
77bfe34f | 1232 | false, /* partial_inplace */ |
252b5132 | 1233 | 0, /* src_mask */ |
5b6a02bc | 1234 | 0x0000ffff, /* dst_mask */ |
252b5132 RH |
1235 | false), /* pcrel_offset */ |
1236 | ||
5b6a02bc TS |
1237 | /* Section displacement, used by an associated event location section. */ |
1238 | /* FIXME: Not handled correctly. */ | |
252b5132 RH |
1239 | HOWTO (R_MIPS_SCN_DISP, /* type */ |
1240 | 0, /* rightshift */ | |
77bfe34f TS |
1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1242 | 32, /* bitsize */ | |
252b5132 RH |
1243 | false, /* pc_relative */ |
1244 | 0, /* bitpos */ | |
1245 | complain_overflow_dont, /* complain_on_overflow */ | |
1246 | bfd_elf_generic_reloc, /* special_function */ | |
1247 | "R_MIPS_SCN_DISP", /* name */ | |
1248 | false, /* partial_inplace */ | |
1249 | 0, /* src_mask */ | |
77bfe34f | 1250 | 0xffffffff, /* dst_mask */ |
252b5132 RH |
1251 | false), /* pcrel_offset */ |
1252 | ||
1253 | HOWTO (R_MIPS_REL16, /* type */ | |
1254 | 0, /* rightshift */ | |
77bfe34f TS |
1255 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1256 | 16, /* bitsize */ | |
252b5132 RH |
1257 | false, /* pc_relative */ |
1258 | 0, /* bitpos */ | |
77bfe34f | 1259 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
1260 | bfd_elf_generic_reloc, /* special_function */ |
1261 | "R_MIPS_REL16", /* name */ | |
1262 | false, /* partial_inplace */ | |
1263 | 0, /* src_mask */ | |
77bfe34f | 1264 | 0xffff, /* dst_mask */ |
252b5132 RH |
1265 | false), /* pcrel_offset */ |
1266 | ||
77bfe34f TS |
1267 | /* These two are obsolete. */ |
1268 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
1269 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
252b5132 | 1270 | |
5b6a02bc TS |
1271 | /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. |
1272 | It must be used for multigot GOT's (and only there). */ | |
252b5132 RH |
1273 | HOWTO (R_MIPS_RELGOT, /* type */ |
1274 | 0, /* rightshift */ | |
77bfe34f TS |
1275 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1276 | 32, /* bitsize */ | |
252b5132 RH |
1277 | false, /* pc_relative */ |
1278 | 0, /* bitpos */ | |
1279 | complain_overflow_dont, /* complain_on_overflow */ | |
1280 | bfd_elf_generic_reloc, /* special_function */ | |
1281 | "R_MIPS_RELGOT", /* name */ | |
1282 | false, /* partial_inplace */ | |
1283 | 0, /* src_mask */ | |
77bfe34f | 1284 | 0xffffffff, /* dst_mask */ |
d2905643 MM |
1285 | false), /* pcrel_offset */ |
1286 | ||
fe8bc63d | 1287 | /* Protected jump conversion. This is an optimization hint. No |
d2905643 MM |
1288 | relocation is required for correctness. */ |
1289 | HOWTO (R_MIPS_JALR, /* type */ | |
1290 | 0, /* rightshift */ | |
77bfe34f | 1291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
5b6a02bc | 1292 | 32, /* bitsize */ |
d2905643 MM |
1293 | false, /* pc_relative */ |
1294 | 0, /* bitpos */ | |
1295 | complain_overflow_dont, /* complain_on_overflow */ | |
1296 | bfd_elf_generic_reloc, /* special_function */ | |
1297 | "R_MIPS_JALR", /* name */ | |
1298 | false, /* partial_inplace */ | |
77bfe34f | 1299 | 0, /* src_mask */ |
5b6a02bc | 1300 | 0x00000000, /* dst_mask */ |
d2905643 | 1301 | false), /* pcrel_offset */ |
252b5132 RH |
1302 | }; |
1303 | ||
1304 | /* Swap in a MIPS 64-bit Rel reloc. */ | |
1305 | ||
1306 | static void | |
1307 | mips_elf64_swap_reloc_in (abfd, src, dst) | |
1308 | bfd *abfd; | |
1309 | const Elf64_Mips_External_Rel *src; | |
1310 | Elf64_Mips_Internal_Rel *dst; | |
1311 | { | |
dc810e39 AM |
1312 | dst->r_offset = H_GET_64 (abfd, src->r_offset); |
1313 | dst->r_sym = H_GET_32 (abfd, src->r_sym); | |
1314 | dst->r_ssym = H_GET_8 (abfd, src->r_ssym); | |
1315 | dst->r_type3 = H_GET_8 (abfd, src->r_type3); | |
1316 | dst->r_type2 = H_GET_8 (abfd, src->r_type2); | |
1317 | dst->r_type = H_GET_8 (abfd, src->r_type); | |
252b5132 RH |
1318 | } |
1319 | ||
1320 | /* Swap in a MIPS 64-bit Rela reloc. */ | |
1321 | ||
1322 | static void | |
1323 | mips_elf64_swap_reloca_in (abfd, src, dst) | |
1324 | bfd *abfd; | |
1325 | const Elf64_Mips_External_Rela *src; | |
1326 | Elf64_Mips_Internal_Rela *dst; | |
1327 | { | |
dc810e39 AM |
1328 | dst->r_offset = H_GET_64 (abfd, src->r_offset); |
1329 | dst->r_sym = H_GET_32 (abfd, src->r_sym); | |
1330 | dst->r_ssym = H_GET_8 (abfd, src->r_ssym); | |
1331 | dst->r_type3 = H_GET_8 (abfd, src->r_type3); | |
1332 | dst->r_type2 = H_GET_8 (abfd, src->r_type2); | |
1333 | dst->r_type = H_GET_8 (abfd, src->r_type); | |
1334 | dst->r_addend = H_GET_S64 (abfd, src->r_addend); | |
252b5132 RH |
1335 | } |
1336 | ||
252b5132 RH |
1337 | /* Swap out a MIPS 64-bit Rel reloc. */ |
1338 | ||
1339 | static void | |
1340 | mips_elf64_swap_reloc_out (abfd, src, dst) | |
1341 | bfd *abfd; | |
1342 | const Elf64_Mips_Internal_Rel *src; | |
1343 | Elf64_Mips_External_Rel *dst; | |
1344 | { | |
dc810e39 AM |
1345 | H_PUT_64 (abfd, src->r_offset, dst->r_offset); |
1346 | H_PUT_32 (abfd, src->r_sym, dst->r_sym); | |
1347 | H_PUT_8 (abfd, src->r_ssym, dst->r_ssym); | |
1348 | H_PUT_8 (abfd, src->r_type3, dst->r_type3); | |
1349 | H_PUT_8 (abfd, src->r_type2, dst->r_type2); | |
1350 | H_PUT_8 (abfd, src->r_type, dst->r_type); | |
252b5132 RH |
1351 | } |
1352 | ||
252b5132 RH |
1353 | /* Swap out a MIPS 64-bit Rela reloc. */ |
1354 | ||
1355 | static void | |
1356 | mips_elf64_swap_reloca_out (abfd, src, dst) | |
1357 | bfd *abfd; | |
1358 | const Elf64_Mips_Internal_Rela *src; | |
1359 | Elf64_Mips_External_Rela *dst; | |
1360 | { | |
dc810e39 AM |
1361 | H_PUT_64 (abfd, src->r_offset, dst->r_offset); |
1362 | H_PUT_32 (abfd, src->r_sym, dst->r_sym); | |
1363 | H_PUT_8 (abfd, src->r_ssym, dst->r_ssym); | |
1364 | H_PUT_8 (abfd, src->r_type3, dst->r_type3); | |
1365 | H_PUT_8 (abfd, src->r_type2, dst->r_type2); | |
1366 | H_PUT_8 (abfd, src->r_type, dst->r_type); | |
5b6a02bc | 1367 | H_PUT_S64 (abfd, src->r_addend, dst->r_addend); |
252b5132 RH |
1368 | } |
1369 | ||
c7ac6ff8 MM |
1370 | /* Swap in a MIPS 64-bit Rel reloc. */ |
1371 | ||
1372 | static void | |
1373 | mips_elf64_be_swap_reloc_in (abfd, src, dst) | |
1374 | bfd *abfd; | |
1375 | const bfd_byte *src; | |
1376 | Elf_Internal_Rel *dst; | |
1377 | { | |
1378 | Elf64_Mips_Internal_Rel mirel; | |
1379 | ||
fe8bc63d | 1380 | mips_elf64_swap_reloc_in (abfd, |
c7ac6ff8 MM |
1381 | (const Elf64_Mips_External_Rel *) src, |
1382 | &mirel); | |
1383 | ||
1384 | dst[0].r_offset = mirel.r_offset; | |
5b6a02bc | 1385 | dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type); |
c7ac6ff8 | 1386 | dst[1].r_offset = mirel.r_offset; |
5b6a02bc | 1387 | dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2); |
c7ac6ff8 | 1388 | dst[2].r_offset = mirel.r_offset; |
5b6a02bc | 1389 | dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3); |
c7ac6ff8 MM |
1390 | } |
1391 | ||
1392 | /* Swap in a MIPS 64-bit Rela reloc. */ | |
1393 | ||
1394 | static void | |
1395 | mips_elf64_be_swap_reloca_in (abfd, src, dst) | |
1396 | bfd *abfd; | |
1397 | const bfd_byte *src; | |
1398 | Elf_Internal_Rela *dst; | |
1399 | { | |
1400 | Elf64_Mips_Internal_Rela mirela; | |
1401 | ||
fe8bc63d | 1402 | mips_elf64_swap_reloca_in (abfd, |
c7ac6ff8 MM |
1403 | (const Elf64_Mips_External_Rela *) src, |
1404 | &mirela); | |
1405 | ||
1406 | dst[0].r_offset = mirela.r_offset; | |
5b6a02bc | 1407 | dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type); |
c7ac6ff8 MM |
1408 | dst[0].r_addend = mirela.r_addend; |
1409 | dst[1].r_offset = mirela.r_offset; | |
5b6a02bc | 1410 | dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2); |
c7ac6ff8 MM |
1411 | dst[1].r_addend = 0; |
1412 | dst[2].r_offset = mirela.r_offset; | |
5b6a02bc | 1413 | dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3); |
c7ac6ff8 MM |
1414 | dst[2].r_addend = 0; |
1415 | } | |
1416 | ||
1417 | /* Swap out a MIPS 64-bit Rel reloc. */ | |
1418 | ||
1419 | static void | |
1420 | mips_elf64_be_swap_reloc_out (abfd, src, dst) | |
1421 | bfd *abfd; | |
1422 | const Elf_Internal_Rel *src; | |
1423 | bfd_byte *dst; | |
1424 | { | |
1425 | Elf64_Mips_Internal_Rel mirel; | |
1426 | ||
5b6a02bc TS |
1427 | mirel.r_offset = src[0].r_offset; |
1428 | BFD_ASSERT(src[0].r_offset == src[1].r_offset); | |
1429 | BFD_ASSERT(src[0].r_offset == src[2].r_offset); | |
1430 | ||
1431 | mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info); | |
1432 | mirel.r_sym = ELF64_R_SYM (src[0].r_info); | |
1433 | mirel.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info); | |
1434 | mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info); | |
1435 | mirel.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info); | |
c7ac6ff8 | 1436 | |
fe8bc63d | 1437 | mips_elf64_swap_reloc_out (abfd, &mirel, |
c7ac6ff8 MM |
1438 | (Elf64_Mips_External_Rel *) dst); |
1439 | } | |
1440 | ||
1441 | /* Swap out a MIPS 64-bit Rela reloc. */ | |
1442 | ||
1443 | static void | |
1444 | mips_elf64_be_swap_reloca_out (abfd, src, dst) | |
1445 | bfd *abfd; | |
1446 | const Elf_Internal_Rela *src; | |
1447 | bfd_byte *dst; | |
1448 | { | |
1449 | Elf64_Mips_Internal_Rela mirela; | |
1450 | ||
5b6a02bc TS |
1451 | mirela.r_offset = src[0].r_offset; |
1452 | BFD_ASSERT(src[0].r_offset == src[1].r_offset); | |
1453 | BFD_ASSERT(src[0].r_offset == src[2].r_offset); | |
1454 | ||
1455 | mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info); | |
1456 | mirela.r_sym = ELF64_R_SYM (src[0].r_info); | |
1457 | mirela.r_addend = src[0].r_addend; | |
1458 | BFD_ASSERT(src[1].r_addend == 0); | |
1459 | BFD_ASSERT(src[2].r_addend == 0); | |
1460 | ||
1461 | mirela.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info); | |
1462 | mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info); | |
1463 | mirela.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info); | |
c7ac6ff8 | 1464 | |
fe8bc63d | 1465 | mips_elf64_swap_reloca_out (abfd, &mirela, |
c7ac6ff8 MM |
1466 | (Elf64_Mips_External_Rela *) dst); |
1467 | } | |
1468 | ||
5b6a02bc | 1469 | /* Calculate the %high function. */ |
252b5132 | 1470 | |
5b6a02bc TS |
1471 | static bfd_vma |
1472 | mips_elf64_high (value) | |
1473 | bfd_vma value; | |
252b5132 | 1474 | { |
5b6a02bc TS |
1475 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; |
1476 | } | |
252b5132 | 1477 | |
5b6a02bc | 1478 | /* Calculate the %higher function. */ |
252b5132 | 1479 | |
5b6a02bc TS |
1480 | static bfd_vma |
1481 | mips_elf64_higher (value) | |
1482 | bfd_vma value; | |
1483 | { | |
1484 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
1485 | } | |
252b5132 | 1486 | |
5b6a02bc TS |
1487 | /* Calculate the %highest function. */ |
1488 | ||
1489 | static bfd_vma | |
1490 | mips_elf64_highest (value) | |
1491 | bfd_vma value; | |
252b5132 | 1492 | { |
5b6a02bc TS |
1493 | return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff; |
1494 | } | |
1495 | ||
1496 | /* Do a R_MIPS_HI16 relocation. */ | |
252b5132 | 1497 | |
5b6a02bc TS |
1498 | bfd_reloc_status_type |
1499 | mips_elf64_hi16_reloc (abfd, | |
1500 | reloc_entry, | |
1501 | symbol, | |
1502 | data, | |
1503 | input_section, | |
1504 | output_bfd, | |
1505 | error_message) | |
1506 | bfd *abfd ATTRIBUTE_UNUSED; | |
1507 | arelent *reloc_entry; | |
1508 | asymbol *symbol; | |
1509 | PTR data ATTRIBUTE_UNUSED; | |
1510 | asection *input_section; | |
1511 | bfd *output_bfd; | |
1512 | char **error_message ATTRIBUTE_UNUSED; | |
1513 | { | |
1514 | /* If we're relocating, and this is an external symbol, we don't | |
1515 | want to change anything. */ | |
1516 | if (output_bfd != (bfd *) NULL | |
1517 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1518 | && (! reloc_entry->howto->partial_inplace | |
1519 | || reloc_entry->addend == 0)) | |
252b5132 | 1520 | { |
5b6a02bc TS |
1521 | reloc_entry->address += input_section->output_offset; |
1522 | return bfd_reloc_ok; | |
1523 | } | |
252b5132 | 1524 | |
5b6a02bc TS |
1525 | if (((reloc_entry->addend & 0xffff) + 0x8000) & ~0xffff) |
1526 | reloc_entry->addend += 0x8000; | |
1527 | ||
1528 | return bfd_reloc_continue; | |
1529 | } | |
1530 | ||
1531 | /* Do a R_MIPS_HIGHER relocation. */ | |
1532 | ||
1533 | bfd_reloc_status_type | |
1534 | mips_elf64_higher_reloc (abfd, | |
1535 | reloc_entry, | |
1536 | symbol, | |
1537 | data, | |
1538 | input_section, | |
1539 | output_bfd, | |
1540 | error_message) | |
1541 | bfd *abfd ATTRIBUTE_UNUSED; | |
1542 | arelent *reloc_entry; | |
1543 | asymbol *symbol; | |
1544 | PTR data ATTRIBUTE_UNUSED; | |
1545 | asection *input_section; | |
1546 | bfd *output_bfd; | |
1547 | char **error_message ATTRIBUTE_UNUSED; | |
1548 | { | |
1549 | /* If we're relocating, and this is an external symbol, we don't | |
1550 | want to change anything. */ | |
1551 | if (output_bfd != (bfd *) NULL | |
1552 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1553 | && (! reloc_entry->howto->partial_inplace | |
1554 | || reloc_entry->addend == 0)) | |
1555 | { | |
1556 | reloc_entry->address += input_section->output_offset; | |
1557 | return bfd_reloc_ok; | |
252b5132 RH |
1558 | } |
1559 | ||
5b6a02bc TS |
1560 | if (((reloc_entry->addend & 0xffffffff) + 0x80008000) |
1561 | & ~0xffffffff) | |
1562 | reloc_entry->addend += 0x80008000; | |
1563 | ||
1564 | return bfd_reloc_continue; | |
252b5132 RH |
1565 | } |
1566 | ||
5b6a02bc | 1567 | /* Do a R_MIPS_HIGHEST relocation. */ |
252b5132 | 1568 | |
5b6a02bc TS |
1569 | bfd_reloc_status_type |
1570 | mips_elf64_highest_reloc (abfd, | |
1571 | reloc_entry, | |
1572 | symbol, | |
1573 | data, | |
1574 | input_section, | |
1575 | output_bfd, | |
1576 | error_message) | |
56fc028e | 1577 | bfd *abfd ATTRIBUTE_UNUSED; |
5b6a02bc TS |
1578 | arelent *reloc_entry; |
1579 | asymbol *symbol; | |
1580 | PTR data ATTRIBUTE_UNUSED; | |
1581 | asection *input_section; | |
1582 | bfd *output_bfd; | |
1583 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 | 1584 | { |
5b6a02bc TS |
1585 | /* If we're relocating, and this is an external symbol, we don't |
1586 | want to change anything. */ | |
1587 | if (output_bfd != (bfd *) NULL | |
1588 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1589 | && (! reloc_entry->howto->partial_inplace | |
1590 | || reloc_entry->addend == 0)) | |
1591 | { | |
1592 | reloc_entry->address += input_section->output_offset; | |
1593 | return bfd_reloc_ok; | |
1594 | } | |
1595 | ||
1596 | if (((reloc_entry->addend & 0xffffffffffff) + 0x800080008000) | |
1597 | & ~0xffffffffffff) | |
1598 | reloc_entry->addend += 0x800080008000; | |
1599 | ||
1600 | return bfd_reloc_continue; | |
252b5132 RH |
1601 | } |
1602 | ||
5b6a02bc TS |
1603 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
1604 | table used for PIC code. If the symbol is an external symbol, the | |
1605 | instruction is modified to contain the offset of the appropriate | |
1606 | entry in the global offset table. If the symbol is a section | |
1607 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
1608 | addends are combined to form the real addend against the section | |
1609 | symbol; the GOT16 is modified to contain the offset of an entry in | |
1610 | the global offset table, and the LO16 is modified to offset it | |
1611 | appropriately. Thus an offset larger than 16 bits requires a | |
1612 | modified value in the global offset table. | |
1613 | ||
1614 | This implementation suffices for the assembler, but the linker does | |
1615 | not yet know how to create global offset tables. */ | |
1616 | ||
1617 | bfd_reloc_status_type | |
1618 | mips_elf64_got16_reloc (abfd, | |
1619 | reloc_entry, | |
1620 | symbol, | |
1621 | data, | |
1622 | input_section, | |
1623 | output_bfd, | |
1624 | error_message) | |
1625 | bfd *abfd; | |
1626 | arelent *reloc_entry; | |
1627 | asymbol *symbol; | |
1628 | PTR data; | |
1629 | asection *input_section; | |
1630 | bfd *output_bfd; | |
1631 | char **error_message; | |
1632 | { | |
1633 | /* If we're relocating, and this an external symbol, we don't want | |
1634 | to change anything. */ | |
1635 | if (output_bfd != (bfd *) NULL | |
1636 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1637 | && reloc_entry->addend == 0) | |
1638 | { | |
1639 | reloc_entry->address += input_section->output_offset; | |
1640 | return bfd_reloc_ok; | |
1641 | } | |
1642 | ||
1643 | /* If we're relocating, and this is a local symbol, we can handle it | |
1644 | just like HI16. */ | |
1645 | if (output_bfd != (bfd *) NULL | |
1646 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
1647 | return mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data, | |
1648 | input_section, output_bfd, error_message); | |
1649 | ||
1650 | abort (); | |
1651 | } | |
1652 | ||
1653 | /* Set the GP value for OUTPUT_BFD. Returns false if this is a | |
1654 | dangerous relocation. */ | |
252b5132 RH |
1655 | |
1656 | static boolean | |
5b6a02bc TS |
1657 | mips_elf64_assign_gp (output_bfd, pgp) |
1658 | bfd *output_bfd; | |
1659 | bfd_vma *pgp; | |
252b5132 | 1660 | { |
252b5132 | 1661 | unsigned int count; |
5b6a02bc | 1662 | asymbol **sym; |
252b5132 | 1663 | unsigned int i; |
252b5132 | 1664 | |
5b6a02bc TS |
1665 | /* If we've already figured out what GP will be, just return it. */ |
1666 | *pgp = _bfd_get_gp_value (output_bfd); | |
1667 | if (*pgp) | |
1668 | return true; | |
252b5132 | 1669 | |
5b6a02bc TS |
1670 | count = bfd_get_symcount (output_bfd); |
1671 | sym = bfd_get_outsymbols (output_bfd); | |
252b5132 | 1672 | |
5b6a02bc TS |
1673 | /* The linker script will have created a symbol named `_gp' with the |
1674 | appropriate value. */ | |
1675 | if (sym == (asymbol **) NULL) | |
1676 | i = count; | |
1677 | else | |
1678 | { | |
1679 | for (i = 0; i < count; i++, sym++) | |
1680 | { | |
1681 | register CONST char *name; | |
252b5132 | 1682 | |
5b6a02bc TS |
1683 | name = bfd_asymbol_name (*sym); |
1684 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1685 | { | |
1686 | *pgp = bfd_asymbol_value (*sym); | |
1687 | _bfd_set_gp_value (output_bfd, *pgp); | |
1688 | break; | |
1689 | } | |
1690 | } | |
1691 | } | |
252b5132 | 1692 | |
5b6a02bc TS |
1693 | if (i >= count) |
1694 | { | |
1695 | /* Only get the error once. */ | |
1696 | *pgp = 4; | |
1697 | _bfd_set_gp_value (output_bfd, *pgp); | |
1698 | return false; | |
1699 | } | |
252b5132 | 1700 | |
5b6a02bc TS |
1701 | return true; |
1702 | } | |
252b5132 | 1703 | |
5b6a02bc TS |
1704 | /* We have to figure out the gp value, so that we can adjust the |
1705 | symbol value correctly. We look up the symbol _gp in the output | |
1706 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1707 | target data. We don't need to adjust the symbol value for an | |
1708 | external symbol if we are producing relocateable output. */ | |
1709 | ||
1710 | static bfd_reloc_status_type | |
1711 | mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, pgp) | |
1712 | bfd *output_bfd; | |
1713 | asymbol *symbol; | |
1714 | boolean relocateable; | |
1715 | char **error_message; | |
1716 | bfd_vma *pgp; | |
1717 | { | |
1718 | if (bfd_is_und_section (symbol->section) | |
1719 | && ! relocateable) | |
252b5132 | 1720 | { |
5b6a02bc TS |
1721 | *pgp = 0; |
1722 | return bfd_reloc_undefined; | |
1723 | } | |
252b5132 | 1724 | |
5b6a02bc TS |
1725 | *pgp = _bfd_get_gp_value (output_bfd); |
1726 | if (*pgp == 0 | |
1727 | && (! relocateable | |
1728 | || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
1729 | { | |
1730 | if (relocateable) | |
252b5132 | 1731 | { |
5b6a02bc TS |
1732 | /* Make up a value. */ |
1733 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1734 | _bfd_set_gp_value (output_bfd, *pgp); | |
1735 | } | |
1736 | else if (!mips_elf64_assign_gp (output_bfd, pgp)) | |
1737 | { | |
1738 | *error_message = | |
1739 | (char *) _("GP relative relocation when _gp not defined"); | |
1740 | return bfd_reloc_dangerous; | |
252b5132 | 1741 | } |
5b6a02bc | 1742 | } |
252b5132 | 1743 | |
5b6a02bc TS |
1744 | return bfd_reloc_ok; |
1745 | } | |
252b5132 | 1746 | |
5b6a02bc TS |
1747 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
1748 | become the offset from the gp register. */ | |
252b5132 | 1749 | |
5b6a02bc TS |
1750 | bfd_reloc_status_type |
1751 | mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1752 | output_bfd, error_message) | |
1753 | bfd *abfd; | |
1754 | arelent *reloc_entry; | |
1755 | asymbol *symbol; | |
1756 | PTR data; | |
1757 | asection *input_section; | |
1758 | bfd *output_bfd; | |
1759 | char **error_message; | |
1760 | { | |
1761 | boolean relocateable; | |
1762 | bfd_reloc_status_type ret; | |
1763 | bfd_vma gp; | |
1764 | ||
1765 | /* If we're relocating, and this is an external symbol with no | |
1766 | addend, we don't want to change anything. We will only have an | |
1767 | addend if this is a newly created reloc, not read from an ELF | |
1768 | file. */ | |
1769 | if (output_bfd != (bfd *) NULL | |
1770 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1771 | && reloc_entry->addend == 0) | |
1772 | { | |
1773 | reloc_entry->address += input_section->output_offset; | |
1774 | return bfd_reloc_ok; | |
1775 | } | |
1776 | ||
1777 | if (output_bfd != (bfd *) NULL) | |
1778 | relocateable = true; | |
1779 | else | |
1780 | { | |
1781 | relocateable = false; | |
1782 | output_bfd = symbol->section->output_section->owner; | |
1783 | } | |
1784 | ||
1785 | ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, | |
1786 | &gp); | |
1787 | if (ret != bfd_reloc_ok) | |
1788 | return ret; | |
1789 | ||
1790 | return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, | |
1791 | relocateable, data, gp); | |
1792 | } | |
1793 | ||
1794 | static bfd_reloc_status_type | |
1795 | gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1796 | gp) | |
1797 | bfd *abfd; | |
1798 | asymbol *symbol; | |
1799 | arelent *reloc_entry; | |
1800 | asection *input_section; | |
1801 | boolean relocateable; | |
1802 | PTR data; | |
1803 | bfd_vma gp; | |
1804 | { | |
1805 | bfd_vma relocation; | |
1806 | unsigned long insn; | |
1807 | unsigned long val; | |
1808 | ||
1809 | if (bfd_is_com_section (symbol->section)) | |
1810 | relocation = 0; | |
1811 | else | |
1812 | relocation = symbol->value; | |
1813 | ||
1814 | relocation += symbol->section->output_section->vma; | |
1815 | relocation += symbol->section->output_offset; | |
1816 | ||
1817 | if (reloc_entry->address > input_section->_cooked_size) | |
1818 | return bfd_reloc_outofrange; | |
1819 | ||
1820 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1821 | ||
1822 | /* Set val to the offset into the section or symbol. */ | |
1823 | if (reloc_entry->howto->src_mask == 0) | |
1824 | { | |
1825 | /* This case occurs with the 64-bit MIPS ELF ABI. */ | |
1826 | val = reloc_entry->addend; | |
1827 | } | |
1828 | else | |
1829 | { | |
1830 | val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; | |
1831 | if (val & 0x8000) | |
1832 | val -= 0x10000; | |
1833 | } | |
1834 | ||
1835 | /* Adjust val for the final section location and GP value. If we | |
1836 | are producing relocateable output, we don't want to do this for | |
1837 | an external symbol. */ | |
1838 | if (! relocateable | |
1839 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1840 | val += relocation - gp; | |
1841 | ||
1842 | insn = (insn & ~0xffff) | (val & 0xffff); | |
1843 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
1844 | ||
1845 | if (relocateable) | |
1846 | reloc_entry->address += input_section->output_offset; | |
1847 | ||
1848 | else if ((long) val >= 0x8000 || (long) val < -0x8000) | |
1849 | return bfd_reloc_overflow; | |
1850 | ||
1851 | return bfd_reloc_ok; | |
1852 | } | |
1853 | ||
1854 | /* Do a R_MIPS_GPREL16 RELA relocation. */ | |
1855 | ||
1856 | bfd_reloc_status_type | |
1857 | mips_elf64_gprel16_reloca (abfd, reloc_entry, symbol, data, input_section, | |
1858 | output_bfd, error_message) | |
1859 | bfd *abfd; | |
1860 | arelent *reloc_entry; | |
1861 | asymbol *symbol; | |
1862 | PTR data ATTRIBUTE_UNUSED; | |
1863 | asection *input_section; | |
1864 | bfd *output_bfd; | |
1865 | char **error_message; | |
1866 | { | |
1867 | boolean relocateable; | |
1868 | bfd_vma gp; | |
1869 | ||
1870 | /* This works only for NewABI. */ | |
1871 | BFD_ASSERT (reloc_entry->howto->src_mask == 0); | |
1872 | ||
1873 | /* If we're relocating, and this is an external symbol with no | |
1874 | addend, we don't want to change anything. We will only have an | |
1875 | addend if this is a newly created reloc, not read from an ELF | |
1876 | file. */ | |
1877 | if (output_bfd != (bfd *) NULL | |
1878 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1879 | && reloc_entry->addend == 0) | |
1880 | { | |
1881 | reloc_entry->address += input_section->output_offset; | |
1882 | return bfd_reloc_ok; | |
1883 | } | |
1884 | ||
1885 | if (output_bfd != (bfd *) NULL) | |
1886 | relocateable = true; | |
1887 | else | |
1888 | { | |
1889 | relocateable = false; | |
1890 | output_bfd = symbol->section->output_section->owner; | |
1891 | } | |
1892 | ||
1893 | if (prev_reloc_address != reloc_entry->address) | |
1894 | prev_reloc_address = reloc_entry->address; | |
1895 | else | |
1896 | { | |
1897 | mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, | |
1898 | &gp); | |
1899 | prev_reloc_addend = reloc_entry->addend + reloc_entry->address - gp; | |
1900 | if (symbol->flags & BSF_LOCAL) | |
1901 | prev_reloc_addend += _bfd_get_gp_value (abfd); | |
1902 | /*fprintf(stderr, "Addend: %lx, Next Addend: %lx\n", reloc_entry->addend, prev_reloc_addend);*/ | |
1903 | } | |
1904 | ||
1905 | return bfd_reloc_ok; | |
1906 | } | |
1907 | ||
1908 | /* Do a R_MIPS_LITERAL relocation. */ | |
1909 | ||
1910 | bfd_reloc_status_type | |
1911 | mips_elf64_literal_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1912 | output_bfd, error_message) | |
1913 | bfd *abfd; | |
1914 | arelent *reloc_entry; | |
1915 | asymbol *symbol; | |
1916 | PTR data; | |
1917 | asection *input_section; | |
1918 | bfd *output_bfd; | |
1919 | char **error_message; | |
1920 | { | |
1921 | /* If we're relocating, and this is an external symbol, we don't | |
1922 | want to change anything. */ | |
1923 | if (output_bfd != (bfd *) NULL | |
1924 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1925 | && (! reloc_entry->howto->partial_inplace | |
1926 | || reloc_entry->addend == 0)) | |
1927 | { | |
1928 | reloc_entry->address += input_section->output_offset; | |
1929 | return bfd_reloc_ok; | |
1930 | } | |
1931 | ||
1932 | /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. | |
1933 | Currently we simply call mips_elf64_gprel16_reloc. */ | |
1934 | return mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, | |
1935 | input_section, output_bfd, error_message); | |
1936 | } | |
1937 | ||
1938 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset | |
1939 | from the gp register? XXX */ | |
1940 | ||
1941 | bfd_reloc_status_type | |
1942 | mips_elf64_gprel32_reloc (abfd, | |
1943 | reloc_entry, | |
1944 | symbol, | |
1945 | data, | |
1946 | input_section, | |
1947 | output_bfd, | |
1948 | error_message) | |
1949 | bfd *abfd; | |
1950 | arelent *reloc_entry; | |
1951 | asymbol *symbol; | |
1952 | PTR data; | |
1953 | asection *input_section; | |
1954 | bfd *output_bfd; | |
1955 | char **error_message; | |
1956 | { | |
1957 | boolean relocateable; | |
1958 | bfd_reloc_status_type ret; | |
1959 | bfd_vma gp; | |
1960 | bfd_vma relocation; | |
1961 | unsigned long val; | |
1962 | ||
1963 | /* If we're relocating, and this is an external symbol with no | |
1964 | addend, we don't want to change anything. We will only have an | |
1965 | addend if this is a newly created reloc, not read from an ELF | |
1966 | file. */ | |
1967 | if (output_bfd != (bfd *) NULL | |
1968 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1969 | && reloc_entry->addend == 0) | |
1970 | { | |
1971 | *error_message = (char *) | |
1972 | _("32bits gp relative relocation occurs for an external symbol"); | |
1973 | return bfd_reloc_outofrange; | |
1974 | } | |
1975 | ||
1976 | if (output_bfd != (bfd *) NULL) | |
1977 | { | |
1978 | relocateable = true; | |
1979 | gp = _bfd_get_gp_value (output_bfd); | |
1980 | } | |
1981 | else | |
1982 | { | |
1983 | relocateable = false; | |
1984 | output_bfd = symbol->section->output_section->owner; | |
1985 | ||
1986 | ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, | |
1987 | error_message, &gp); | |
1988 | if (ret != bfd_reloc_ok) | |
1989 | return ret; | |
1990 | } | |
1991 | ||
1992 | if (bfd_is_com_section (symbol->section)) | |
1993 | relocation = 0; | |
1994 | else | |
1995 | relocation = symbol->value; | |
1996 | ||
1997 | relocation += symbol->section->output_section->vma; | |
1998 | relocation += symbol->section->output_offset; | |
1999 | ||
2000 | if (reloc_entry->address > input_section->_cooked_size) | |
2001 | return bfd_reloc_outofrange; | |
2002 | ||
2003 | if (reloc_entry->howto->src_mask == 0) | |
2004 | { | |
2005 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
2006 | val = 0; | |
2007 | } | |
2008 | else | |
2009 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
2010 | ||
2011 | /* Set val to the offset into the section or symbol. */ | |
2012 | val += reloc_entry->addend; | |
2013 | ||
2014 | /* Adjust val for the final section location and GP value. If we | |
2015 | are producing relocateable output, we don't want to do this for | |
2016 | an external symbol. */ | |
2017 | if (! relocateable | |
2018 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2019 | val += relocation - gp; | |
2020 | ||
2021 | bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); | |
2022 | ||
2023 | if (relocateable) | |
2024 | reloc_entry->address += input_section->output_offset; | |
2025 | ||
2026 | return bfd_reloc_ok; | |
2027 | } | |
2028 | ||
2029 | /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2, | |
2030 | the rest is at bits 6-10. The bitpos alredy got right by the howto. */ | |
2031 | ||
2032 | bfd_reloc_status_type | |
2033 | mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section, | |
2034 | output_bfd, error_message) | |
2035 | bfd *abfd ATTRIBUTE_UNUSED; | |
2036 | arelent *reloc_entry; | |
2037 | asymbol *symbol; | |
2038 | PTR data ATTRIBUTE_UNUSED; | |
2039 | asection *input_section; | |
2040 | bfd *output_bfd; | |
2041 | char **error_message ATTRIBUTE_UNUSED; | |
2042 | { | |
2043 | /* If we're relocating, and this is an external symbol, we don't | |
2044 | want to change anything. */ | |
2045 | if (output_bfd != (bfd *) NULL | |
2046 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2047 | && (! reloc_entry->howto->partial_inplace | |
2048 | || reloc_entry->addend == 0)) | |
2049 | { | |
2050 | reloc_entry->address += input_section->output_offset; | |
2051 | return bfd_reloc_ok; | |
2052 | } | |
2053 | ||
2054 | reloc_entry->addend = (reloc_entry->addend & 0x00007c0) | |
2055 | | (reloc_entry->addend & 0x00000800) >> 9; | |
2056 | ||
2057 | return bfd_reloc_continue; | |
2058 | } | |
2059 | ||
2060 | static int | |
2061 | mips_elf64_additional_program_headers (abfd) | |
2062 | bfd *abfd; | |
2063 | { | |
2064 | int ret = 0; | |
2065 | ||
2066 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
2067 | if (bfd_get_section_by_name (abfd, ".MIPS.options")) | |
2068 | ++ret; | |
2069 | ||
2070 | return ret; | |
2071 | } | |
2072 | ||
2073 | /* Given a BFD reloc type, return a howto structure. */ | |
2074 | ||
2075 | static reloc_howto_type * | |
2076 | mips_elf64_reloc_type_lookup (abfd, code) | |
2077 | bfd *abfd ATTRIBUTE_UNUSED; | |
2078 | bfd_reloc_code_real_type code; | |
2079 | { | |
2080 | /* FIXME: We default to RELA here instead of choosing the right | |
2081 | relocation variant. */ | |
2082 | reloc_howto_type *howto_table = mips_elf64_howto_table_rela; | |
2083 | ||
2084 | switch (code) | |
2085 | { | |
2086 | case BFD_RELOC_NONE: | |
2087 | return &howto_table[R_MIPS_NONE]; | |
2088 | case BFD_RELOC_16: | |
2089 | return &howto_table[R_MIPS_16]; | |
2090 | case BFD_RELOC_32: | |
2091 | return &howto_table[R_MIPS_32]; | |
2092 | case BFD_RELOC_64: | |
2093 | case BFD_RELOC_CTOR: | |
2094 | /* We need to handle these specially. Select the right | |
2095 | relocation (R_MIPS_32 or R_MIPS_64) based on the | |
2096 | size of addresses on this architecture. */ | |
2097 | if (bfd_arch_bits_per_address (abfd) == 32) | |
2098 | return &howto_table[R_MIPS_32]; | |
2099 | else | |
2100 | return &howto_table[R_MIPS_64]; | |
2101 | ||
2102 | case BFD_RELOC_16_PCREL: | |
2103 | return &howto_table[R_MIPS_PC16]; | |
2104 | case BFD_RELOC_HI16_S: | |
2105 | return &howto_table[R_MIPS_HI16]; | |
2106 | case BFD_RELOC_LO16: | |
2107 | return &howto_table[R_MIPS_LO16]; | |
2108 | case BFD_RELOC_GPREL16: | |
2109 | return &howto_table[R_MIPS_GPREL16]; | |
2110 | case BFD_RELOC_GPREL32: | |
2111 | return &howto_table[R_MIPS_GPREL32]; | |
2112 | case BFD_RELOC_MIPS_JMP: | |
2113 | return &howto_table[R_MIPS_26]; | |
2114 | case BFD_RELOC_MIPS_LITERAL: | |
2115 | return &howto_table[R_MIPS_LITERAL]; | |
2116 | case BFD_RELOC_MIPS_GOT16: | |
2117 | return &howto_table[R_MIPS_GOT16]; | |
2118 | case BFD_RELOC_MIPS_CALL16: | |
2119 | return &howto_table[R_MIPS_CALL16]; | |
2120 | case BFD_RELOC_MIPS_SHIFT5: | |
2121 | return &howto_table[R_MIPS_SHIFT5]; | |
2122 | case BFD_RELOC_MIPS_SHIFT6: | |
2123 | return &howto_table[R_MIPS_SHIFT6]; | |
2124 | case BFD_RELOC_MIPS_GOT_DISP: | |
2125 | return &howto_table[R_MIPS_GOT_DISP]; | |
2126 | case BFD_RELOC_MIPS_GOT_PAGE: | |
2127 | return &howto_table[R_MIPS_GOT_PAGE]; | |
2128 | case BFD_RELOC_MIPS_GOT_OFST: | |
2129 | return &howto_table[R_MIPS_GOT_OFST]; | |
2130 | case BFD_RELOC_MIPS_GOT_HI16: | |
2131 | return &howto_table[R_MIPS_GOT_HI16]; | |
2132 | case BFD_RELOC_MIPS_GOT_LO16: | |
2133 | return &howto_table[R_MIPS_GOT_LO16]; | |
2134 | case BFD_RELOC_MIPS_SUB: | |
2135 | return &howto_table[R_MIPS_SUB]; | |
2136 | case BFD_RELOC_MIPS_INSERT_A: | |
2137 | return &howto_table[R_MIPS_INSERT_A]; | |
2138 | case BFD_RELOC_MIPS_INSERT_B: | |
2139 | return &howto_table[R_MIPS_INSERT_B]; | |
2140 | case BFD_RELOC_MIPS_DELETE: | |
2141 | return &howto_table[R_MIPS_DELETE]; | |
2142 | case BFD_RELOC_MIPS_HIGHEST: | |
2143 | return &howto_table[R_MIPS_HIGHEST]; | |
2144 | case BFD_RELOC_MIPS_HIGHER: | |
2145 | return &howto_table[R_MIPS_HIGHER]; | |
2146 | case BFD_RELOC_MIPS_CALL_HI16: | |
2147 | return &howto_table[R_MIPS_CALL_HI16]; | |
2148 | case BFD_RELOC_MIPS_CALL_LO16: | |
2149 | return &howto_table[R_MIPS_CALL_LO16]; | |
2150 | case BFD_RELOC_MIPS_SCN_DISP: | |
2151 | return &howto_table[R_MIPS_SCN_DISP]; | |
2152 | case BFD_RELOC_MIPS_REL16: | |
2153 | return &howto_table[R_MIPS_REL16]; | |
2154 | /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */ | |
2155 | case BFD_RELOC_MIPS_RELGOT: | |
2156 | return &howto_table[R_MIPS_RELGOT]; | |
2157 | case BFD_RELOC_MIPS_JALR: | |
2158 | return &howto_table[R_MIPS_JALR]; | |
2159 | /* | |
2160 | case BFD_RELOC_MIPS16_JMP: | |
2161 | return &elf_mips16_jump_howto; | |
2162 | case BFD_RELOC_MIPS16_GPREL: | |
2163 | return &elf_mips16_gprel_howto; | |
2164 | case BFD_RELOC_VTABLE_INHERIT: | |
2165 | return &elf_mips_gnu_vtinherit_howto; | |
2166 | case BFD_RELOC_VTABLE_ENTRY: | |
2167 | return &elf_mips_gnu_vtentry_howto; | |
2168 | case BFD_RELOC_PCREL_HI16_S: | |
2169 | return &elf_mips_gnu_rel_hi16; | |
2170 | case BFD_RELOC_PCREL_LO16: | |
2171 | return &elf_mips_gnu_rel_lo16; | |
2172 | case BFD_RELOC_16_PCREL_S2: | |
2173 | return &elf_mips_gnu_rel16_s2; | |
2174 | case BFD_RELOC_64_PCREL: | |
2175 | return &elf_mips_gnu_pcrel64; | |
2176 | case BFD_RELOC_32_PCREL: | |
2177 | return &elf_mips_gnu_pcrel32; | |
2178 | */ | |
2179 | default: | |
2180 | bfd_set_error (bfd_error_bad_value); | |
2181 | return NULL; | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | /* Prevent relocation handling by bfd for MIPS ELF64. */ | |
2186 | ||
2187 | static void | |
2188 | mips_elf64_info_to_howto_rel (abfd, cache_ptr, dst) | |
2189 | bfd *abfd ATTRIBUTE_UNUSED; | |
2190 | arelent *cache_ptr ATTRIBUTE_UNUSED; | |
2191 | Elf64_Internal_Rel *dst ATTRIBUTE_UNUSED; | |
2192 | { | |
2193 | BFD_ASSERT (0); | |
2194 | } | |
2195 | ||
2196 | static void | |
2197 | mips_elf64_info_to_howto_rela (abfd, cache_ptr, dst) | |
2198 | bfd *abfd ATTRIBUTE_UNUSED; | |
2199 | arelent *cache_ptr ATTRIBUTE_UNUSED; | |
2200 | Elf64_Internal_Rela *dst ATTRIBUTE_UNUSED; | |
2201 | { | |
2202 | BFD_ASSERT (0); | |
2203 | } | |
2204 | ||
2205 | /* Since each entry in an SHT_REL or SHT_RELA section can represent up | |
2206 | to three relocs, we must tell the user to allocate more space. */ | |
2207 | ||
2208 | static long | |
2209 | mips_elf64_get_reloc_upper_bound (abfd, sec) | |
2210 | bfd *abfd ATTRIBUTE_UNUSED; | |
2211 | asection *sec; | |
2212 | { | |
2213 | return (sec->reloc_count * 3 + 1) * sizeof (arelent *); | |
2214 | } | |
2215 | ||
2216 | /* Read the relocations from one reloc section. */ | |
2217 | ||
2218 | static boolean | |
2219 | mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, rel_hdr) | |
2220 | bfd *abfd; | |
2221 | asection *asect; | |
2222 | asymbol **symbols; | |
2223 | const Elf_Internal_Shdr *rel_hdr; | |
2224 | { | |
2225 | PTR allocated = NULL; | |
2226 | bfd_byte *native_relocs; | |
2227 | arelent *relents; | |
2228 | arelent *relent; | |
2229 | bfd_vma count; | |
2230 | bfd_vma i; | |
2231 | int entsize; | |
2232 | reloc_howto_type *howto_table; | |
2233 | ||
2234 | allocated = (PTR) bfd_malloc (rel_hdr->sh_size); | |
2235 | if (allocated == NULL) | |
2236 | return false; | |
2237 | ||
2238 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 | |
2239 | || (bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)) | |
2240 | goto error_return; | |
2241 | ||
2242 | native_relocs = (bfd_byte *) allocated; | |
2243 | ||
2244 | relents = asect->relocation + asect->reloc_count; | |
2245 | ||
2246 | entsize = rel_hdr->sh_entsize; | |
2247 | BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel) | |
2248 | || entsize == sizeof (Elf64_Mips_External_Rela)); | |
2249 | ||
2250 | count = rel_hdr->sh_size / entsize; | |
2251 | ||
2252 | if (entsize == sizeof (Elf64_Mips_External_Rel)) | |
2253 | howto_table = mips_elf64_howto_table_rel; | |
2254 | else | |
2255 | howto_table = mips_elf64_howto_table_rela; | |
2256 | ||
2257 | relent = relents; | |
2258 | for (i = 0; i < count; i++, native_relocs += entsize) | |
2259 | { | |
2260 | Elf64_Mips_Internal_Rela rela; | |
2261 | boolean used_sym, used_ssym; | |
2262 | int ir; | |
2263 | ||
2264 | if (entsize == sizeof (Elf64_Mips_External_Rela)) | |
2265 | mips_elf64_swap_reloca_in (abfd, | |
2266 | (Elf64_Mips_External_Rela *) native_relocs, | |
2267 | &rela); | |
2268 | else | |
2269 | { | |
2270 | Elf64_Mips_Internal_Rel rel; | |
2271 | ||
2272 | mips_elf64_swap_reloc_in (abfd, | |
2273 | (Elf64_Mips_External_Rel *) native_relocs, | |
2274 | &rel); | |
2275 | rela.r_offset = rel.r_offset; | |
2276 | rela.r_sym = rel.r_sym; | |
2277 | rela.r_ssym = rel.r_ssym; | |
2278 | rela.r_type3 = rel.r_type3; | |
2279 | rela.r_type2 = rel.r_type2; | |
2280 | rela.r_type = rel.r_type; | |
2281 | rela.r_addend = 0; | |
2282 | } | |
2283 | ||
2284 | /* Each entry represents up to three actual relocations. */ | |
2285 | ||
2286 | used_sym = false; | |
2287 | used_ssym = false; | |
2288 | for (ir = 0; ir < 3; ir++) | |
2289 | { | |
2290 | enum elf_mips_reloc_type type; | |
2291 | ||
2292 | switch (ir) | |
252b5132 RH |
2293 | { |
2294 | default: | |
2295 | abort (); | |
2296 | case 0: | |
2297 | type = (enum elf_mips_reloc_type) rela.r_type; | |
2298 | break; | |
2299 | case 1: | |
2300 | type = (enum elf_mips_reloc_type) rela.r_type2; | |
2301 | break; | |
2302 | case 2: | |
2303 | type = (enum elf_mips_reloc_type) rela.r_type3; | |
2304 | break; | |
2305 | } | |
2306 | ||
2307 | if (type == R_MIPS_NONE) | |
2308 | { | |
2309 | /* There are no more relocations in this entry. If this | |
2310 | is the first entry, we need to generate a dummy | |
2311 | relocation so that the generic linker knows that | |
2312 | there has been a break in the sequence of relocations | |
2313 | applying to a particular address. */ | |
2314 | if (ir == 0) | |
2315 | { | |
2316 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
2317 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
2318 | relent->address = rela.r_offset; | |
2319 | else | |
2320 | relent->address = rela.r_offset - asect->vma; | |
2321 | relent->addend = 0; | |
2322 | relent->howto = &howto_table[(int) R_MIPS_NONE]; | |
2323 | ++relent; | |
2324 | } | |
2325 | break; | |
2326 | } | |
2327 | ||
2328 | /* Some types require symbols, whereas some do not. */ | |
2329 | switch (type) | |
2330 | { | |
2331 | case R_MIPS_NONE: | |
2332 | case R_MIPS_LITERAL: | |
2333 | case R_MIPS_INSERT_A: | |
2334 | case R_MIPS_INSERT_B: | |
2335 | case R_MIPS_DELETE: | |
2336 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
2337 | break; | |
2338 | ||
2339 | default: | |
2340 | if (! used_sym) | |
2341 | { | |
2342 | if (rela.r_sym == 0) | |
2343 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
2344 | else | |
2345 | { | |
2346 | asymbol **ps, *s; | |
2347 | ||
2348 | ps = symbols + rela.r_sym - 1; | |
2349 | s = *ps; | |
2350 | if ((s->flags & BSF_SECTION_SYM) == 0) | |
2351 | relent->sym_ptr_ptr = ps; | |
2352 | else | |
2353 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; | |
2354 | } | |
2355 | ||
2356 | used_sym = true; | |
2357 | } | |
2358 | else if (! used_ssym) | |
2359 | { | |
2360 | switch (rela.r_ssym) | |
2361 | { | |
2362 | case RSS_UNDEF: | |
2363 | relent->sym_ptr_ptr = | |
2364 | bfd_abs_section_ptr->symbol_ptr_ptr; | |
2365 | break; | |
2366 | ||
2367 | case RSS_GP: | |
2368 | case RSS_GP0: | |
2369 | case RSS_LOC: | |
2370 | /* FIXME: I think these need to be handled using | |
2371 | special howto structures. */ | |
2372 | BFD_ASSERT (0); | |
2373 | break; | |
2374 | ||
2375 | default: | |
2376 | BFD_ASSERT (0); | |
2377 | break; | |
2378 | } | |
2379 | ||
2380 | used_ssym = true; | |
2381 | } | |
2382 | else | |
2383 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
2384 | ||
2385 | break; | |
2386 | } | |
2387 | ||
2388 | /* The address of an ELF reloc is section relative for an | |
2389 | object file, and absolute for an executable file or | |
2390 | shared library. The address of a BFD reloc is always | |
2391 | section relative. */ | |
2392 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
2393 | relent->address = rela.r_offset; | |
2394 | else | |
2395 | relent->address = rela.r_offset - asect->vma; | |
2396 | ||
2397 | relent->addend = rela.r_addend; | |
2398 | ||
2399 | relent->howto = &howto_table[(int) type]; | |
2400 | ||
2401 | ++relent; | |
2402 | } | |
2403 | } | |
2404 | ||
2405 | asect->reloc_count += relent - relents; | |
2406 | ||
2407 | if (allocated != NULL) | |
2408 | free (allocated); | |
2409 | ||
2410 | return true; | |
2411 | ||
2412 | error_return: | |
2413 | if (allocated != NULL) | |
2414 | free (allocated); | |
2415 | return false; | |
2416 | } | |
2417 | ||
2418 | /* Read the relocations. On Irix 6, there can be two reloc sections | |
2419 | associated with a single data section. */ | |
2420 | ||
2421 | static boolean | |
2422 | mips_elf64_slurp_reloc_table (abfd, asect, symbols, dynamic) | |
2423 | bfd *abfd; | |
2424 | asection *asect; | |
2425 | asymbol **symbols; | |
2426 | boolean dynamic; | |
2427 | { | |
dc810e39 | 2428 | bfd_size_type amt; |
252b5132 RH |
2429 | struct bfd_elf_section_data * const d = elf_section_data (asect); |
2430 | ||
2431 | if (dynamic) | |
2432 | { | |
2433 | bfd_set_error (bfd_error_invalid_operation); | |
2434 | return false; | |
2435 | } | |
2436 | ||
2437 | if (asect->relocation != NULL | |
2438 | || (asect->flags & SEC_RELOC) == 0 | |
2439 | || asect->reloc_count == 0) | |
2440 | return true; | |
2441 | ||
2442 | /* Allocate space for 3 arelent structures for each Rel structure. */ | |
dc810e39 AM |
2443 | amt = asect->reloc_count; |
2444 | amt *= 3 * sizeof (arelent); | |
2445 | asect->relocation = (arelent *) bfd_alloc (abfd, amt); | |
252b5132 RH |
2446 | if (asect->relocation == NULL) |
2447 | return false; | |
2448 | ||
2449 | /* The slurp_one_reloc_table routine increments reloc_count. */ | |
2450 | asect->reloc_count = 0; | |
2451 | ||
2452 | if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, &d->rel_hdr)) | |
2453 | return false; | |
2454 | if (d->rel_hdr2 != NULL) | |
2455 | { | |
2456 | if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, | |
2457 | d->rel_hdr2)) | |
2458 | return false; | |
2459 | } | |
2460 | ||
2461 | return true; | |
2462 | } | |
2463 | ||
2464 | /* Write out the relocations. */ | |
2465 | ||
2466 | static void | |
2467 | mips_elf64_write_relocs (abfd, sec, data) | |
2468 | bfd *abfd; | |
2469 | asection *sec; | |
2470 | PTR data; | |
2471 | { | |
2472 | boolean *failedp = (boolean *) data; | |
5b6a02bc TS |
2473 | int count; |
2474 | Elf_Internal_Shdr *rel_hdr; | |
252b5132 | 2475 | unsigned int idx; |
252b5132 RH |
2476 | |
2477 | /* If we have already failed, don't do anything. */ | |
2478 | if (*failedp) | |
2479 | return; | |
2480 | ||
2481 | if ((sec->flags & SEC_RELOC) == 0) | |
2482 | return; | |
2483 | ||
2484 | /* The linker backend writes the relocs out itself, and sets the | |
2485 | reloc_count field to zero to inhibit writing them here. Also, | |
2486 | sometimes the SEC_RELOC flag gets set even when there aren't any | |
2487 | relocs. */ | |
2488 | if (sec->reloc_count == 0) | |
2489 | return; | |
2490 | ||
2491 | /* We can combine up to three relocs that refer to the same address | |
2492 | if the latter relocs have no associated symbol. */ | |
2493 | count = 0; | |
2494 | for (idx = 0; idx < sec->reloc_count; idx++) | |
2495 | { | |
2496 | bfd_vma addr; | |
2497 | unsigned int i; | |
2498 | ||
2499 | ++count; | |
2500 | ||
2501 | addr = sec->orelocation[idx]->address; | |
2502 | for (i = 0; i < 2; i++) | |
2503 | { | |
2504 | arelent *r; | |
2505 | ||
2506 | if (idx + 1 >= sec->reloc_count) | |
2507 | break; | |
2508 | r = sec->orelocation[idx + 1]; | |
2509 | if (r->address != addr | |
2510 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
2511 | || (*r->sym_ptr_ptr)->value != 0) | |
2512 | break; | |
2513 | ||
2514 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ | |
2515 | ||
2516 | ++idx; | |
2517 | } | |
2518 | } | |
2519 | ||
5b6a02bc | 2520 | rel_hdr = &elf_section_data (sec)->rel_hdr; |
252b5132 | 2521 | |
5b6a02bc TS |
2522 | /* Do the actual relocation. */ |
2523 | ||
2524 | if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel)) | |
2525 | mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data); | |
2526 | else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela)) | |
2527 | mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data); | |
2528 | else | |
2529 | BFD_ASSERT (0); | |
2530 | } | |
2531 | ||
2532 | static void | |
2533 | mips_elf64_write_rel (abfd, sec, rel_hdr, count, data) | |
2534 | bfd *abfd; | |
2535 | asection *sec; | |
2536 | Elf_Internal_Shdr *rel_hdr; | |
2537 | int *count; | |
2538 | PTR data; | |
2539 | { | |
2540 | boolean *failedp = (boolean *) data; | |
2541 | Elf64_Mips_External_Rel *ext_rel; | |
2542 | unsigned int idx; | |
2543 | asymbol *last_sym = 0; | |
2544 | int last_sym_idx = 0; | |
2545 | ||
2546 | rel_hdr->sh_size = (bfd_vma)(rel_hdr->sh_entsize * *count); | |
2547 | rel_hdr->contents = (PTR) bfd_alloc (abfd, rel_hdr->sh_size); | |
2548 | if (rel_hdr->contents == NULL) | |
252b5132 RH |
2549 | { |
2550 | *failedp = true; | |
2551 | return; | |
2552 | } | |
2553 | ||
5b6a02bc TS |
2554 | ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents; |
2555 | for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++) | |
252b5132 RH |
2556 | { |
2557 | arelent *ptr; | |
5b6a02bc | 2558 | Elf64_Mips_Internal_Rel int_rel; |
252b5132 RH |
2559 | asymbol *sym; |
2560 | int n; | |
2561 | unsigned int i; | |
2562 | ||
2563 | ptr = sec->orelocation[idx]; | |
2564 | ||
2565 | /* The address of an ELF reloc is section relative for an object | |
2566 | file, and absolute for an executable file or shared library. | |
2567 | The address of a BFD reloc is always section relative. */ | |
2568 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
5b6a02bc | 2569 | int_rel.r_offset = ptr->address; |
252b5132 | 2570 | else |
5b6a02bc | 2571 | int_rel.r_offset = ptr->address + sec->vma; |
252b5132 RH |
2572 | |
2573 | sym = *ptr->sym_ptr_ptr; | |
2574 | if (sym == last_sym) | |
2575 | n = last_sym_idx; | |
2576 | else | |
2577 | { | |
2578 | last_sym = sym; | |
2579 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); | |
2580 | if (n < 0) | |
2581 | { | |
2582 | *failedp = true; | |
2583 | return; | |
2584 | } | |
2585 | last_sym_idx = n; | |
2586 | } | |
2587 | ||
5b6a02bc TS |
2588 | int_rel.r_sym = n; |
2589 | int_rel.r_ssym = RSS_UNDEF; | |
252b5132 RH |
2590 | |
2591 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
2592 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
2593 | { | |
2594 | *failedp = true; | |
2595 | return; | |
2596 | } | |
2597 | ||
5b6a02bc TS |
2598 | int_rel.r_type = ptr->howto->type; |
2599 | int_rel.r_type2 = (int) R_MIPS_NONE; | |
2600 | int_rel.r_type3 = (int) R_MIPS_NONE; | |
252b5132 RH |
2601 | |
2602 | for (i = 0; i < 2; i++) | |
2603 | { | |
2604 | arelent *r; | |
2605 | ||
2606 | if (idx + 1 >= sec->reloc_count) | |
2607 | break; | |
2608 | r = sec->orelocation[idx + 1]; | |
2609 | if (r->address != ptr->address | |
2610 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
2611 | || (*r->sym_ptr_ptr)->value != 0) | |
2612 | break; | |
2613 | ||
2614 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ | |
2615 | ||
2616 | if (i == 0) | |
5b6a02bc | 2617 | int_rel.r_type2 = r->howto->type; |
252b5132 | 2618 | else |
5b6a02bc | 2619 | int_rel.r_type3 = r->howto->type; |
252b5132 RH |
2620 | |
2621 | ++idx; | |
2622 | } | |
2623 | ||
5b6a02bc | 2624 | mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel); |
252b5132 RH |
2625 | } |
2626 | ||
5b6a02bc TS |
2627 | BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents |
2628 | == *count); | |
252b5132 | 2629 | } |
5b6a02bc TS |
2630 | |
2631 | static void | |
2632 | mips_elf64_write_rela (abfd, sec, rela_hdr, count, data) | |
2633 | bfd *abfd; | |
2634 | asection *sec; | |
2635 | Elf_Internal_Shdr *rela_hdr; | |
2636 | int *count; | |
2637 | PTR data; | |
2638 | { | |
2639 | boolean *failedp = (boolean *) data; | |
2640 | Elf64_Mips_External_Rela *ext_rela; | |
2641 | unsigned int idx; | |
2642 | asymbol *last_sym = 0; | |
2643 | int last_sym_idx = 0; | |
2644 | ||
2645 | rela_hdr->sh_size = (bfd_vma)(rela_hdr->sh_entsize * *count); | |
2646 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); | |
2647 | if (rela_hdr->contents == NULL) | |
2648 | { | |
2649 | *failedp = true; | |
2650 | return; | |
2651 | } | |
2652 | ||
2653 | ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents; | |
2654 | for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++) | |
2655 | { | |
2656 | arelent *ptr; | |
2657 | Elf64_Mips_Internal_Rela int_rela; | |
2658 | asymbol *sym; | |
2659 | int n; | |
2660 | unsigned int i; | |
2661 | ||
2662 | ptr = sec->orelocation[idx]; | |
2663 | ||
2664 | /* The address of an ELF reloc is section relative for an object | |
2665 | file, and absolute for an executable file or shared library. | |
2666 | The address of a BFD reloc is always section relative. */ | |
2667 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
2668 | int_rela.r_offset = ptr->address; | |
2669 | else | |
2670 | int_rela.r_offset = ptr->address + sec->vma; | |
2671 | ||
2672 | sym = *ptr->sym_ptr_ptr; | |
2673 | if (sym == last_sym) | |
2674 | n = last_sym_idx; | |
2675 | else | |
2676 | { | |
2677 | last_sym = sym; | |
2678 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); | |
2679 | if (n < 0) | |
2680 | { | |
2681 | *failedp = true; | |
2682 | return; | |
2683 | } | |
2684 | last_sym_idx = n; | |
2685 | } | |
2686 | ||
2687 | int_rela.r_sym = n; | |
2688 | int_rela.r_addend = ptr->addend; | |
2689 | int_rela.r_ssym = RSS_UNDEF; | |
2690 | ||
2691 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
2692 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
2693 | { | |
2694 | *failedp = true; | |
2695 | return; | |
2696 | } | |
2697 | ||
2698 | int_rela.r_type = ptr->howto->type; | |
2699 | int_rela.r_type2 = (int) R_MIPS_NONE; | |
2700 | int_rela.r_type3 = (int) R_MIPS_NONE; | |
2701 | ||
2702 | for (i = 0; i < 2; i++) | |
2703 | { | |
2704 | arelent *r; | |
2705 | ||
2706 | if (idx + 1 >= sec->reloc_count) | |
2707 | break; | |
2708 | r = sec->orelocation[idx + 1]; | |
2709 | if (r->address != ptr->address | |
2710 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
2711 | || (*r->sym_ptr_ptr)->value != 0) | |
2712 | break; | |
2713 | ||
2714 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ | |
2715 | ||
2716 | if (i == 0) | |
2717 | int_rela.r_type2 = r->howto->type; | |
2718 | else | |
2719 | int_rela.r_type3 = r->howto->type; | |
2720 | ||
2721 | ++idx; | |
2722 | } | |
2723 | ||
2724 | mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela); | |
2725 | } | |
2726 | ||
2727 | BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents | |
2728 | == *count); | |
2729 | } | |
2730 | \f | |
2731 | /* This structure is used to hold .got information when linking. It | |
2732 | is stored in the tdata field of the bfd_elf_section_data structure. */ | |
2733 | ||
2734 | struct mips_elf64_got_info | |
2735 | { | |
2736 | /* The global symbol in the GOT with the lowest index in the dynamic | |
2737 | symbol table. */ | |
2738 | struct elf_link_hash_entry *global_gotsym; | |
2739 | /* The number of global .got entries. */ | |
2740 | unsigned int global_gotno; | |
2741 | /* The number of local .got entries. */ | |
2742 | unsigned int local_gotno; | |
2743 | /* The number of local .got entries we have used. */ | |
2744 | unsigned int assigned_gotno; | |
2745 | }; | |
2746 | ||
2747 | /* The MIPS ELF64 linker needs additional information for each symbol in | |
2748 | the global hash table. */ | |
2749 | ||
2750 | struct mips_elf64_link_hash_entry | |
2751 | { | |
2752 | struct elf_link_hash_entry root; | |
2753 | ||
2754 | /* External symbol information. */ | |
2755 | EXTR esym; | |
2756 | ||
2757 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against | |
2758 | this symbol. */ | |
2759 | unsigned int possibly_dynamic_relocs; | |
2760 | ||
2761 | /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against | |
2762 | a readonly section. */ | |
2763 | boolean readonly_reloc; | |
2764 | ||
2765 | /* The index of the first dynamic relocation (in the .rel.dyn | |
2766 | section) against this symbol. */ | |
2767 | unsigned int min_dyn_reloc_index; | |
a17aee54 TS |
2768 | |
2769 | /* We must not create a stub for a symbol that has relocations | |
2770 | related to taking the function's address, i.e. any but | |
2771 | R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition", | |
2772 | p. 4-20. */ | |
2773 | boolean no_fn_stub; | |
2774 | ||
2775 | /* If there is a stub that 32 bit functions should use to call this | |
2776 | 16 bit function, this points to the section containing the stub. */ | |
2777 | asection *fn_stub; | |
2778 | ||
2779 | /* Whether we need the fn_stub; this is set if this symbol appears | |
2780 | in any relocs other than a 16 bit call. */ | |
2781 | boolean need_fn_stub; | |
2782 | ||
2783 | /* If there is a stub that 16 bit functions should use to call this | |
2784 | 32 bit function, this points to the section containing the stub. */ | |
2785 | asection *call_stub; | |
2786 | ||
2787 | /* This is like the call_stub field, but it is used if the function | |
2788 | being called returns a floating point value. */ | |
2789 | asection *call_fp_stub; | |
5b6a02bc | 2790 | }; |
a17aee54 TS |
2791 | \f |
2792 | /* The mips16 compiler uses a couple of special sections to handle | |
2793 | floating point arguments. | |
2794 | ||
2795 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
2796 | copy floating point arguments from the fp regs to the gp regs and | |
2797 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
2798 | call should be redirected to the stub instead. If no 32 bit | |
2799 | function calls FNNAME, the stub should be discarded. We need to | |
2800 | consider any reference to the function, not just a call, because | |
2801 | if the address of the function is taken we will need the stub, | |
2802 | since the address might be passed to a 32 bit function. | |
2803 | ||
2804 | Section names that look like .mips16.call.FNNAME contain stubs | |
2805 | that copy floating point arguments from the gp regs to the fp | |
2806 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
2807 | then any 16 bit function that calls FNNAME should be redirected | |
2808 | to the stub instead. If FNNAME is not a 32 bit function, the | |
2809 | stub should be discarded. | |
2810 | ||
2811 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
2812 | which call FNNAME and then copy the return value from the fp regs | |
2813 | to the gp regs. These stubs store the return value in $18 while | |
2814 | calling FNNAME; any function which might call one of these stubs | |
2815 | must arrange to save $18 around the call. (This case is not | |
2816 | needed for 32 bit functions that call 16 bit functions, because | |
2817 | 16 bit functions always return floating point values in both | |
2818 | $f0/$f1 and $2/$3.) | |
2819 | ||
2820 | Note that in all cases FNNAME might be defined statically. | |
2821 | Therefore, FNNAME is not used literally. Instead, the relocation | |
2822 | information will indicate which symbol the section is for. | |
2823 | ||
2824 | We record any stubs that we find in the symbol table. */ | |
2825 | ||
2826 | #define FN_STUB ".mips16.fn." | |
2827 | #define CALL_STUB ".mips16.call." | |
2828 | #define CALL_FP_STUB ".mips16.call.fp." | |
5b6a02bc TS |
2829 | |
2830 | /* MIPS ELF64 linker hash table. */ | |
2831 | ||
2832 | struct mips_elf64_link_hash_table | |
2833 | { | |
2834 | struct elf_link_hash_table root; | |
a17aee54 TS |
2835 | /* This is set if we see any mips16 stub sections. */ |
2836 | boolean mips16_stubs_seen; | |
5b6a02bc TS |
2837 | }; |
2838 | ||
2839 | /* Look up an entry in a MIPS ELF64 linker hash table. */ | |
2840 | ||
2841 | #define mips_elf64_link_hash_lookup(table, string, create, copy, follow) \ | |
2842 | ((struct mips_elf64_link_hash_entry *) \ | |
2843 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
2844 | (copy), (follow))) | |
2845 | ||
2846 | /* Traverse a MIPS ELF linker hash table. */ | |
2847 | ||
2848 | #define mips_elf64_link_hash_traverse(table, func, info) \ | |
2849 | (elf_link_hash_traverse \ | |
2850 | (&(table)->root, \ | |
2851 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
2852 | (info))) | |
2853 | ||
2854 | /* Get the MIPS ELF64 linker hash table from a link_info structure. */ | |
2855 | ||
2856 | #define mips_elf64_hash_table(p) \ | |
2857 | ((struct mips_elf64_link_hash_table *) ((p)->hash)) | |
2858 | ||
2859 | /* Create an entry in a MIPS ELF64 linker hash table. */ | |
2860 | ||
2861 | static struct bfd_hash_entry * | |
2862 | mips_elf64_link_hash_newfunc (entry, table, string) | |
2863 | struct bfd_hash_entry *entry; | |
2864 | struct bfd_hash_table *table; | |
2865 | const char *string; | |
2866 | { | |
2867 | struct mips_elf64_link_hash_entry *ret = | |
2868 | (struct mips_elf64_link_hash_entry *) entry; | |
2869 | ||
2870 | /* Allocate the structure if it has not already been allocated by a | |
2871 | subclass. */ | |
2872 | if (ret == (struct mips_elf64_link_hash_entry *) NULL) | |
2873 | ret = ((struct mips_elf64_link_hash_entry *) | |
2874 | bfd_hash_allocate (table, | |
2875 | sizeof (struct mips_elf64_link_hash_entry))); | |
2876 | if (ret == (struct mips_elf64_link_hash_entry *) NULL) | |
2877 | return (struct bfd_hash_entry *) ret; | |
2878 | ||
2879 | /* Call the allocation method of the superclass. */ | |
2880 | ret = ((struct mips_elf64_link_hash_entry *) | |
2881 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2882 | table, string)); | |
2883 | if (ret != (struct mips_elf64_link_hash_entry *) NULL) | |
2884 | { | |
2885 | /* Set local fields. */ | |
2886 | memset (&ret->esym, 0, sizeof (EXTR)); | |
2887 | /* We use -2 as a marker to indicate that the information has | |
2888 | not been set. -1 means there is no associated ifd. */ | |
2889 | ret->esym.ifd = -2; | |
2890 | ret->possibly_dynamic_relocs = 0; | |
2891 | ret->readonly_reloc = false; | |
2892 | ret->min_dyn_reloc_index = 0; | |
a17aee54 TS |
2893 | ret->no_fn_stub = false; |
2894 | ret->fn_stub = NULL; | |
2895 | ret->need_fn_stub = false; | |
2896 | ret->call_stub = NULL; | |
2897 | ret->call_fp_stub = NULL; | |
5b6a02bc TS |
2898 | } |
2899 | ||
2900 | return (struct bfd_hash_entry *) ret; | |
2901 | } | |
2902 | ||
2903 | /* Create a MIPS ELF64 linker hash table. */ | |
2904 | ||
2905 | struct bfd_link_hash_table * | |
2906 | mips_elf64_link_hash_table_create (abfd) | |
2907 | bfd *abfd; | |
2908 | { | |
2909 | struct mips_elf64_link_hash_table *ret; | |
2910 | ||
2911 | ret = ((struct mips_elf64_link_hash_table *) | |
2912 | bfd_alloc (abfd, sizeof (struct mips_elf64_link_hash_table))); | |
2913 | if (ret == (struct mips_elf64_link_hash_table *) NULL) | |
2914 | return NULL; | |
2915 | ||
2916 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
2917 | mips_elf64_link_hash_newfunc)) | |
2918 | { | |
2919 | bfd_release (abfd, ret); | |
2920 | return NULL; | |
2921 | } | |
2922 | ||
a17aee54 TS |
2923 | ret->mips16_stubs_seen = false; |
2924 | ||
5b6a02bc TS |
2925 | return &ret->root.root; |
2926 | } | |
2927 | \f | |
2928 | /* Returns the offset for the entry at the INDEXth position | |
2929 | in the GOT. */ | |
2930 | ||
2931 | static bfd_vma | |
2932 | mips_elf64_got_offset_from_index (dynobj, output_bfd, index) | |
2933 | bfd *dynobj; | |
2934 | bfd *output_bfd; | |
2935 | bfd_vma index; | |
2936 | { | |
2937 | asection *sgot; | |
2938 | bfd_vma gp; | |
2939 | ||
2940 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2941 | gp = _bfd_get_gp_value (output_bfd); | |
2942 | return (sgot->output_section->vma + sgot->output_offset + index - | |
2943 | gp); | |
2944 | } | |
2945 | ||
2946 | /* Returns the GOT information associated with the link indicated by | |
2947 | INFO. If SGOTP is non-NULL, it is filled in with the GOT | |
2948 | section. */ | |
2949 | ||
2950 | static struct mips_elf64_got_info * | |
2951 | _mips_elf64_got_info (abfd, sgotp) | |
2952 | bfd *abfd; | |
2953 | asection **sgotp; | |
2954 | { | |
2955 | asection *sgot; | |
2956 | struct mips_elf64_got_info *g; | |
2957 | ||
2958 | sgot = bfd_get_section_by_name (abfd, ".got"); | |
2959 | BFD_ASSERT (sgot != NULL); | |
2960 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
2961 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; | |
2962 | BFD_ASSERT (g != NULL); | |
2963 | ||
2964 | if (sgotp) | |
2965 | *sgotp = sgot; | |
2966 | return g; | |
2967 | } | |
2968 | ||
2969 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
2970 | ||
2971 | static bfd_vma | |
2972 | mips_elf64_sign_extend (value, bits) | |
2973 | bfd_vma value; | |
2974 | int bits; | |
2975 | { | |
2976 | if (value & ((bfd_vma)1 << (bits - 1))) | |
2977 | /* VALUE is negative. */ | |
2978 | value |= ((bfd_vma) - 1) << bits; | |
2979 | ||
2980 | return value; | |
2981 | } | |
2982 | ||
2983 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
2984 | range expressable by a signed number with the indicated number of | |
2985 | BITS. */ | |
2986 | ||
2987 | static boolean | |
2988 | mips_elf64_overflow_p (value, bits) | |
2989 | bfd_vma value; | |
2990 | int bits; | |
2991 | { | |
2992 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
2993 | ||
2994 | if (svalue > (1 << (bits - 1)) - 1) | |
2995 | /* The value is too big. */ | |
2996 | return true; | |
2997 | else if (svalue < -(1 << (bits - 1))) | |
2998 | /* The value is too small. */ | |
2999 | return true; | |
3000 | ||
3001 | /* All is well. */ | |
3002 | return false; | |
3003 | } | |
3004 | \f | |
3005 | /* Returns the GOT index for the global symbol indicated by H. */ | |
3006 | ||
3007 | static bfd_vma | |
3008 | mips_elf64_global_got_index (abfd, h) | |
3009 | bfd *abfd; | |
3010 | struct elf_link_hash_entry *h; | |
3011 | { | |
3012 | bfd_vma index; | |
3013 | asection *sgot; | |
3014 | struct mips_elf64_got_info *g; | |
3015 | ||
3016 | g = _mips_elf64_got_info (abfd, &sgot); | |
3017 | ||
3018 | /* Once we determine the global GOT entry with the lowest dynamic | |
3019 | symbol table index, we must put all dynamic symbols with greater | |
3020 | indices into the GOT. That makes it easy to calculate the GOT | |
3021 | offset. */ | |
3022 | BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx); | |
3023 | index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno) | |
3024 | * (get_elf_backend_data (abfd)->s->arch_size / 8)); | |
3025 | BFD_ASSERT (index < sgot->_raw_size); | |
3026 | ||
3027 | return index; | |
3028 | } | |
3029 | ||
3030 | struct mips_elf64_hash_sort_data | |
3031 | { | |
3032 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
3033 | index. */ | |
3034 | struct elf_link_hash_entry *low; | |
3035 | /* The least dynamic symbol table index corresponding to a symbol | |
3036 | with a GOT entry. */ | |
3037 | long min_got_dynindx; | |
3038 | /* The greatest dynamic symbol table index not corresponding to a | |
3039 | symbol without a GOT entry. */ | |
3040 | long max_non_got_dynindx; | |
3041 | }; | |
3042 | ||
3043 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3044 | index. Otherwise, assign it the lowest available dynamic | |
3045 | index. */ | |
3046 | ||
3047 | static boolean | |
3048 | mips_elf64_sort_hash_table_f (h, data) | |
3049 | struct mips_elf64_link_hash_entry *h; | |
3050 | PTR data; | |
3051 | { | |
3052 | struct mips_elf64_hash_sort_data *hsd | |
3053 | = (struct mips_elf64_hash_sort_data *) data; | |
3054 | ||
3055 | /* Symbols without dynamic symbol table entries aren't interesting | |
3056 | at all. */ | |
3057 | if (h->root.dynindx == -1) | |
3058 | return true; | |
3059 | ||
a17aee54 | 3060 | if (h->root.got.offset != 1) |
5b6a02bc TS |
3061 | h->root.dynindx = hsd->max_non_got_dynindx++; |
3062 | else | |
3063 | { | |
3064 | h->root.dynindx = --hsd->min_got_dynindx; | |
3065 | hsd->low = (struct elf_link_hash_entry *) h; | |
3066 | } | |
3067 | ||
3068 | return true; | |
3069 | } | |
3070 | ||
3071 | /* Sort the dynamic symbol table so that symbols that need GOT entries | |
3072 | appear towards the end. This reduces the amount of GOT space | |
3073 | required. MAX_LOCAL is used to set the number of local symbols | |
3074 | known to be in the dynamic symbol table. During | |
3075 | mips_elf64_size_dynamic_sections, this value is 1. Afterward, the | |
3076 | section symbols are added and the count is higher. */ | |
3077 | ||
3078 | static boolean | |
3079 | mips_elf64_sort_hash_table (info, max_local) | |
3080 | struct bfd_link_info *info; | |
3081 | unsigned long max_local; | |
3082 | { | |
3083 | struct mips_elf64_hash_sort_data hsd; | |
3084 | struct mips_elf64_got_info *g; | |
3085 | bfd *dynobj; | |
3086 | ||
3087 | dynobj = elf_hash_table (info)->dynobj; | |
3088 | ||
3089 | hsd.low = NULL; | |
3090 | hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount; | |
3091 | hsd.max_non_got_dynindx = max_local; | |
3092 | mips_elf64_link_hash_traverse (((struct mips_elf64_link_hash_table *) | |
3093 | elf_hash_table (info)), | |
3094 | mips_elf64_sort_hash_table_f, | |
3095 | &hsd); | |
3096 | ||
3097 | /* There shoud have been enough room in the symbol table to | |
3098 | accomodate both the GOT and non-GOT symbols. */ | |
3099 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); | |
3100 | ||
3101 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3102 | table index in the GOT. */ | |
3103 | g = _mips_elf64_got_info (dynobj, NULL); | |
3104 | g->global_gotsym = hsd.low; | |
3105 | ||
3106 | return true; | |
3107 | } | |
3108 | \f | |
3109 | #if 0 | |
3110 | /* Swap in an MSYM entry. */ | |
3111 | ||
3112 | static void | |
3113 | mips_elf64_swap_msym_in (abfd, ex, in) | |
3114 | bfd *abfd; | |
3115 | const Elf32_External_Msym *ex; | |
3116 | Elf32_Internal_Msym *in; | |
3117 | { | |
a17aee54 TS |
3118 | in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value); |
3119 | in->ms_info = H_GET_32 (abfd, ex->ms_info); | |
5b6a02bc TS |
3120 | } |
3121 | #endif | |
3122 | /* Swap out an MSYM entry. */ | |
3123 | ||
3124 | static void | |
3125 | mips_elf64_swap_msym_out (abfd, in, ex) | |
3126 | bfd *abfd; | |
3127 | const Elf32_Internal_Msym *in; | |
3128 | Elf32_External_Msym *ex; | |
3129 | { | |
a17aee54 TS |
3130 | H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value); |
3131 | H_PUT_32 (abfd, in->ms_info, ex->ms_info); | |
5b6a02bc TS |
3132 | } |
3133 | \f | |
3134 | /* Create a local GOT entry for VALUE. Return the index of the entry, | |
3135 | or -1 if it could not be created. */ | |
3136 | ||
3137 | static bfd_vma | |
3138 | mips_elf64_create_local_got_entry (abfd, g, sgot, value) | |
3139 | bfd *abfd; | |
3140 | struct mips_elf64_got_info *g; | |
3141 | asection *sgot; | |
3142 | bfd_vma value; | |
3143 | { | |
3144 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; | |
3145 | ||
3146 | if (g->assigned_gotno >= g->local_gotno) | |
3147 | { | |
3148 | /* We didn't allocate enough space in the GOT. */ | |
3149 | (*_bfd_error_handler) | |
3150 | (_("not enough GOT space for local GOT entries")); | |
3151 | bfd_set_error (bfd_error_bad_value); | |
3152 | return (bfd_vma) -1; | |
3153 | } | |
3154 | ||
3155 | bfd_put_64 (abfd, value, (sgot->contents + got_size * g->assigned_gotno)); | |
3156 | return got_size * g->assigned_gotno++; | |
3157 | } | |
3158 | ||
3159 | /* Returns the GOT offset at which the indicated address can be found. | |
3160 | If there is not yet a GOT entry for this value, create one. Returns | |
3161 | -1 if no satisfactory GOT offset can be found. */ | |
3162 | ||
3163 | static bfd_vma | |
3164 | mips_elf64_local_got_index (abfd, info, value) | |
3165 | bfd *abfd; | |
3166 | struct bfd_link_info *info; | |
3167 | bfd_vma value; | |
3168 | { | |
3169 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; | |
3170 | asection *sgot; | |
3171 | struct mips_elf64_got_info *g; | |
3172 | bfd_byte *entry; | |
3173 | ||
3174 | g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); | |
3175 | ||
3176 | /* Look to see if we already have an appropriate entry. */ | |
3177 | for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); | |
3178 | entry != sgot->contents + got_size * g->assigned_gotno; | |
3179 | entry += got_size) | |
3180 | { | |
3181 | bfd_vma address = bfd_get_64 (abfd, entry); | |
3182 | if (address == value) | |
3183 | return entry - sgot->contents; | |
3184 | } | |
3185 | ||
3186 | return mips_elf64_create_local_got_entry (abfd, g, sgot, value); | |
3187 | } | |
3188 | ||
3189 | /* Find a GOT entry that is within 32KB of the VALUE. These entries | |
3190 | are supposed to be placed at small offsets in the GOT, i.e., | |
3191 | within 32KB of GP. Return the index into the GOT for this page, | |
3192 | and store the offset from this entry to the desired address in | |
3193 | OFFSETP, if it is non-NULL. */ | |
3194 | ||
3195 | static bfd_vma | |
3196 | mips_elf64_got_page (abfd, info, value, offsetp) | |
3197 | bfd *abfd; | |
3198 | struct bfd_link_info *info; | |
3199 | bfd_vma value; | |
3200 | bfd_vma *offsetp; | |
3201 | { | |
3202 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; | |
3203 | asection *sgot; | |
3204 | struct mips_elf64_got_info *g; | |
3205 | bfd_byte *entry; | |
3206 | bfd_byte *last_entry; | |
3207 | bfd_vma index = 0; | |
3208 | bfd_vma address; | |
3209 | ||
3210 | g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); | |
3211 | ||
3212 | /* Look to see if we aleady have an appropriate entry. */ | |
3213 | last_entry = sgot->contents + got_size * g->assigned_gotno; | |
3214 | for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); | |
3215 | entry != last_entry; | |
3216 | entry += got_size) | |
3217 | { | |
3218 | address = bfd_get_64 (abfd, entry); | |
3219 | ||
3220 | if (!mips_elf64_overflow_p (value - address, 16)) | |
3221 | { | |
3222 | /* This entry will serve as the page pointer. We can add a | |
3223 | 16-bit number to it to get the actual address. */ | |
3224 | index = entry - sgot->contents; | |
3225 | break; | |
3226 | } | |
3227 | } | |
3228 | ||
3229 | /* If we didn't have an appropriate entry, we create one now. */ | |
3230 | if (entry == last_entry) | |
3231 | index = mips_elf64_create_local_got_entry (abfd, g, sgot, value); | |
3232 | ||
3233 | if (offsetp) | |
3234 | { | |
3235 | address = bfd_get_64 (abfd, entry); | |
3236 | *offsetp = value - address; | |
3237 | } | |
3238 | ||
3239 | return index; | |
3240 | } | |
3241 | ||
3242 | /* Find a GOT entry whose higher-order 16 bits are the same as those | |
3243 | for value. Return the index into the GOT for this entry. */ | |
3244 | ||
3245 | static bfd_vma | |
3246 | mips_elf64_got16_entry (abfd, info, value, external) | |
3247 | bfd *abfd; | |
3248 | struct bfd_link_info *info; | |
3249 | bfd_vma value; | |
3250 | boolean external; | |
3251 | { | |
3252 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; | |
3253 | asection *sgot; | |
3254 | struct mips_elf64_got_info *g; | |
3255 | bfd_byte *entry; | |
3256 | bfd_byte *last_entry; | |
3257 | bfd_vma index = 0; | |
3258 | bfd_vma address; | |
3259 | ||
3260 | if (! external) | |
3261 | { | |
3262 | /* Although the ABI says that it is "the high-order 16 bits" that we | |
3263 | want, it is really the %high value. The complete value is | |
3264 | calculated with a `addiu' of a LO16 relocation, just as with a | |
3265 | HI16/LO16 pair. */ | |
3266 | value = mips_elf64_high (value) << 16; | |
3267 | } | |
3268 | ||
3269 | g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); | |
3270 | ||
3271 | /* Look to see if we already have an appropriate entry. */ | |
3272 | last_entry = sgot->contents + got_size * g->assigned_gotno; | |
3273 | for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); | |
3274 | entry != last_entry; | |
3275 | entry += got_size) | |
3276 | { | |
3277 | address = bfd_get_64 (abfd, entry); | |
3278 | if (address == value) | |
3279 | { | |
3280 | /* This entry has the right high-order 16 bits, and the low-order | |
3281 | 16 bits are set to zero. */ | |
3282 | index = entry - sgot->contents; | |
3283 | break; | |
3284 | } | |
3285 | } | |
3286 | ||
3287 | /* If we didn't have an appropriate entry, we create one now. */ | |
3288 | if (entry == last_entry) | |
3289 | index = mips_elf64_create_local_got_entry (abfd, g, sgot, value); | |
3290 | ||
3291 | return index; | |
3292 | } | |
3293 | \f | |
3294 | /* Return whether a relocation is against a local symbol. */ | |
3295 | ||
3296 | static boolean | |
3297 | mips_elf64_local_relocation_p (input_bfd, relocation, local_sections, | |
3298 | check_forced) | |
3299 | bfd *input_bfd; | |
3300 | const Elf_Internal_Rela *relocation; | |
3301 | asection **local_sections; | |
3302 | boolean check_forced; | |
3303 | { | |
3304 | unsigned long r_symndx; | |
3305 | Elf_Internal_Shdr *symtab_hdr; | |
3306 | struct mips_elf64_link_hash_entry* h; | |
3307 | size_t extsymoff; | |
3308 | ||
3309 | r_symndx = ELF64_R_SYM (relocation->r_info); | |
3310 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3311 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
3312 | ||
3313 | if (r_symndx < extsymoff) | |
3314 | return true; | |
3315 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) | |
3316 | return true; | |
3317 | ||
3318 | if (check_forced) | |
3319 | { | |
3320 | /* Look up the hash table to check whether the symbol | |
3321 | was forced local. */ | |
3322 | h = (struct mips_elf64_link_hash_entry *) | |
3323 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
3324 | /* Find the real hash-table entry for this symbol. */ | |
3325 | while (h->root.root.type == bfd_link_hash_indirect | |
3326 | || h->root.root.type == bfd_link_hash_warning) | |
3327 | h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; | |
3328 | if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) | |
3329 | return true; | |
3330 | } | |
3331 | ||
3332 | return false; | |
3333 | } | |
3334 | \f | |
3335 | /* Returns the first relocation of type r_type found, beginning with | |
3336 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
3337 | ||
3338 | static const Elf_Internal_Rela * | |
3339 | mips_elf64_next_relocation (r_type, relocation, relend) | |
3340 | unsigned int r_type; | |
3341 | const Elf_Internal_Rela *relocation; | |
3342 | const Elf_Internal_Rela *relend; | |
3343 | { | |
3344 | /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be | |
3345 | immediately following. However, for the IRIX6 ABI, the next | |
3346 | relocation may be a composed relocation consisting of several | |
3347 | relocations for the same address. In that case, the R_MIPS_LO16 | |
3348 | relocation may occur as one of these. We permit a similar | |
3349 | extension in general, as that is useful for GCC. */ | |
3350 | while (relocation < relend) | |
3351 | { | |
3352 | if (ELF64_MIPS_R_TYPE (relocation->r_info) == r_type) | |
3353 | return relocation; | |
3354 | ||
3355 | ++relocation; | |
3356 | } | |
3357 | ||
3358 | /* We didn't find it. */ | |
3359 | bfd_set_error (bfd_error_bad_value); | |
3360 | return NULL; | |
3361 | } | |
3362 | ||
3363 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL | |
3364 | is the original relocation, which is now being transformed into a | |
3365 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
3366 | caller should store the result in place of the original addend. */ | |
3367 | ||
3368 | static boolean | |
3369 | mips_elf64_create_dynamic_relocation (output_bfd, info, rel, h, sec, | |
a17aee54 | 3370 | symbol, addendp, input_section) |
5b6a02bc TS |
3371 | bfd *output_bfd; |
3372 | struct bfd_link_info *info; | |
3373 | const Elf_Internal_Rela *rel; | |
3374 | struct mips_elf64_link_hash_entry *h; | |
3375 | asection *sec; | |
3376 | bfd_vma symbol; | |
3377 | bfd_vma *addendp; | |
3378 | asection *input_section; | |
5b6a02bc TS |
3379 | { |
3380 | Elf_Internal_Rel outrel[3]; | |
3381 | boolean skip; | |
3382 | asection *sreloc; | |
3383 | bfd *dynobj; | |
3384 | int r_type; | |
3385 | ||
3386 | r_type = ELF64_MIPS_R_TYPE (rel->r_info); | |
3387 | dynobj = elf_hash_table (info)->dynobj; | |
3388 | sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
3389 | BFD_ASSERT (sreloc != NULL); | |
3390 | BFD_ASSERT (sreloc->contents != NULL); | |
a17aee54 TS |
3391 | BFD_ASSERT ((sreloc->reloc_count |
3392 | * get_elf_backend_data (output_bfd)->s->sizeof_rel) | |
3393 | < sreloc->_raw_size); | |
5b6a02bc TS |
3394 | |
3395 | skip = false; | |
a17aee54 TS |
3396 | outrel[0].r_offset = _bfd_elf_section_offset (output_bfd, info, |
3397 | input_section, | |
3398 | rel[0].r_offset); | |
0bb2d96a JJ |
3399 | /* FIXME: For -2 runtime relocation needs to be skipped, but |
3400 | properly resolved statically and installed. */ | |
3401 | BFD_ASSERT (outrel[0].r_offset != (bfd_vma) -2); | |
5b6a02bc TS |
3402 | |
3403 | /* We begin by assuming that the offset for the dynamic relocation | |
3404 | is the same as for the original relocation. We'll adjust this | |
3405 | later to reflect the correct output offsets. */ | |
a17aee54 | 3406 | if (elf_section_data (input_section)->sec_info_type != ELF_INFO_TYPE_STABS) |
5b6a02bc | 3407 | { |
5b6a02bc TS |
3408 | outrel[1].r_offset = rel[1].r_offset; |
3409 | outrel[2].r_offset = rel[2].r_offset; | |
3410 | } | |
3411 | else | |
3412 | { | |
3413 | /* Except that in a stab section things are more complex. | |
3414 | Because we compress stab information, the offset given in the | |
3415 | relocation may not be the one we want; we must let the stabs | |
3416 | machinery tell us the offset. */ | |
5b6a02bc TS |
3417 | outrel[1].r_offset = outrel[0].r_offset; |
3418 | outrel[2].r_offset = outrel[0].r_offset; | |
3419 | /* If we didn't need the relocation at all, this value will be | |
3420 | -1. */ | |
3421 | if (outrel[0].r_offset == (bfd_vma) -1) | |
3422 | skip = true; | |
3423 | } | |
3424 | ||
3425 | /* If we've decided to skip this relocation, just output an empty | |
3426 | record. Note that R_MIPS_NONE == 0, so that this call to memset | |
3427 | is a way of setting R_TYPE to R_MIPS_NONE. */ | |
3428 | if (skip) | |
3429 | memset (outrel, 0, sizeof (Elf_Internal_Rel) * 3); | |
3430 | else | |
3431 | { | |
3432 | long indx; | |
3433 | bfd_vma section_offset; | |
3434 | ||
3435 | /* We must now calculate the dynamic symbol table index to use | |
3436 | in the relocation. */ | |
3437 | if (h != NULL | |
3438 | && (! info->symbolic || (h->root.elf_link_hash_flags | |
3439 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
3440 | { | |
3441 | indx = h->root.dynindx; | |
3442 | /* h->root.dynindx may be -1 if this symbol was marked to | |
3443 | become local. */ | |
3444 | if (indx == -1) | |
3445 | indx = 0; | |
3446 | } | |
3447 | else | |
3448 | { | |
3449 | if (sec != NULL && bfd_is_abs_section (sec)) | |
3450 | indx = 0; | |
3451 | else if (sec == NULL || sec->owner == NULL) | |
3452 | { | |
3453 | bfd_set_error (bfd_error_bad_value); | |
3454 | return false; | |
3455 | } | |
3456 | else | |
3457 | { | |
3458 | indx = elf_section_data (sec->output_section)->dynindx; | |
3459 | if (indx == 0) | |
3460 | abort (); | |
3461 | } | |
3462 | ||
3463 | /* Figure out how far the target of the relocation is from | |
3464 | the beginning of its section. */ | |
3465 | section_offset = symbol - sec->output_section->vma; | |
3466 | /* The relocation we're building is section-relative. | |
3467 | Therefore, the original addend must be adjusted by the | |
3468 | section offset. */ | |
a17aee54 | 3469 | *addendp += section_offset; |
5b6a02bc TS |
3470 | /* Now, the relocation is just against the section. */ |
3471 | symbol = sec->output_section->vma; | |
3472 | } | |
3473 | ||
a17aee54 TS |
3474 | /* If the relocation was previously an absolute relocation and |
3475 | this symbol will not be referred to by the relocation, we must | |
3476 | adjust it by the value we give it in the dynamic symbol table. | |
3477 | Otherwise leave the job up to the dynamic linker. */ | |
3478 | if (!indx && r_type != R_MIPS_REL32) | |
5b6a02bc TS |
3479 | *addendp += symbol; |
3480 | ||
3481 | /* The relocation is always an REL32 relocation because we don't | |
3482 | know where the shared library will wind up at load-time. */ | |
3483 | outrel[0].r_info = ELF64_R_INFO (indx, R_MIPS_REL32); | |
3484 | ||
3485 | /* Adjust the output offset of the relocation to reference the | |
3486 | correct location in the output file. */ | |
3487 | outrel[0].r_offset += (input_section->output_section->vma | |
3488 | + input_section->output_offset); | |
3489 | outrel[1].r_offset += (input_section->output_section->vma | |
3490 | + input_section->output_offset); | |
3491 | outrel[2].r_offset += (input_section->output_section->vma | |
3492 | + input_section->output_offset); | |
3493 | } | |
3494 | ||
3495 | /* Put the relocation back out. */ | |
3496 | mips_elf64_be_swap_reloc_out (output_bfd, outrel, | |
3497 | (sreloc->contents | |
3498 | + sreloc->reloc_count | |
3499 | * sizeof (Elf64_Mips_External_Rel))); | |
3500 | ||
3501 | /* Record the index of the first relocation referencing H. This | |
3502 | information is later emitted in the .msym section. */ | |
3503 | if (h != NULL | |
3504 | && (h->min_dyn_reloc_index == 0 | |
3505 | || sreloc->reloc_count < h->min_dyn_reloc_index)) | |
3506 | h->min_dyn_reloc_index = sreloc->reloc_count; | |
3507 | ||
3508 | /* We've now added another relocation. */ | |
3509 | ++sreloc->reloc_count; | |
3510 | ||
3511 | /* Make sure the output section is writable. The dynamic linker | |
3512 | will be writing to it. */ | |
3513 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
3514 | |= SHF_WRITE; | |
3515 | ||
3516 | return true; | |
3517 | } | |
3518 | ||
3519 | /* Calculate the value produced by the RELOCATION (which comes from | |
3520 | the INPUT_BFD). The ADDEND is the addend to use for this | |
3521 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
3522 | ||
3523 | The result of the relocation calculation is stored in VALUEP. | |
a17aee54 TS |
3524 | REQUIRE_JALXP indicates whether or not the opcode used with this |
3525 | relocation must be JALX. | |
5b6a02bc TS |
3526 | |
3527 | This function returns bfd_reloc_continue if the caller need take no | |
3528 | further action regarding this relocation, bfd_reloc_notsupported if | |
3529 | something goes dramatically wrong, bfd_reloc_overflow if an | |
3530 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
3531 | ||
3532 | static bfd_reloc_status_type | |
a17aee54 TS |
3533 | mips_elf64_calculate_relocation (abfd, input_bfd, input_section, info, |
3534 | relocation, addend, howto, local_syms, | |
3535 | local_sections, valuep, namep, require_jalxp) | |
5b6a02bc TS |
3536 | bfd *abfd; |
3537 | bfd *input_bfd; | |
3538 | asection *input_section; | |
3539 | struct bfd_link_info *info; | |
3540 | const Elf_Internal_Rela *relocation; | |
3541 | bfd_vma addend; | |
3542 | reloc_howto_type *howto; | |
3543 | Elf_Internal_Sym *local_syms; | |
3544 | asection **local_sections; | |
3545 | bfd_vma *valuep; | |
3546 | const char **namep; | |
a17aee54 | 3547 | boolean *require_jalxp; |
5b6a02bc TS |
3548 | { |
3549 | /* The eventual value we will return. */ | |
3550 | bfd_vma value; | |
3551 | /* The address of the symbol against which the relocation is | |
3552 | occurring. */ | |
3553 | bfd_vma symbol = 0; | |
3554 | /* The final GP value to be used for the relocatable, executable, or | |
3555 | shared object file being produced. */ | |
3556 | bfd_vma gp = (bfd_vma) - 1; | |
3557 | /* The place (section offset or address) of the storage unit being | |
3558 | relocated. */ | |
3559 | bfd_vma p; | |
3560 | /* The value of GP used to create the relocatable object. */ | |
3561 | bfd_vma gp0 = (bfd_vma) - 1; | |
3562 | /* The offset into the global offset table at which the address of | |
3563 | the relocation entry symbol, adjusted by the addend, resides | |
3564 | during execution. */ | |
3565 | bfd_vma g = (bfd_vma) - 1; | |
3566 | /* The section in which the symbol referenced by the relocation is | |
3567 | located. */ | |
3568 | asection *sec = NULL; | |
3569 | struct mips_elf64_link_hash_entry* h = NULL; | |
3570 | /* True if the symbol referred to by this relocation is a local | |
3571 | symbol. */ | |
3572 | boolean local_p; | |
3573 | Elf_Internal_Shdr *symtab_hdr; | |
3574 | size_t extsymoff; | |
3575 | unsigned long r_symndx; | |
3576 | int r_type; | |
3577 | /* True if overflow occurred during the calculation of the | |
3578 | relocation value. */ | |
3579 | boolean overflowed_p; | |
a17aee54 TS |
3580 | /* True if this relocation refers to a MIPS16 function. */ |
3581 | boolean target_is_16_bit_code_p = false; | |
5b6a02bc TS |
3582 | |
3583 | /* Parse the relocation. */ | |
3584 | r_symndx = ELF64_R_SYM (relocation->r_info); | |
3585 | r_type = ELF64_MIPS_R_TYPE (relocation->r_info); | |
3586 | p = (input_section->output_section->vma | |
3587 | + input_section->output_offset | |
3588 | + relocation->r_offset); | |
3589 | ||
3590 | /* Assume that there will be no overflow. */ | |
3591 | overflowed_p = false; | |
3592 | ||
3593 | /* Figure out whether or not the symbol is local, and get the offset | |
3594 | used in the array of hash table entries. */ | |
3595 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3596 | local_p = mips_elf64_local_relocation_p (input_bfd, relocation, | |
3597 | local_sections, false); | |
3598 | if (! elf_bad_symtab (input_bfd)) | |
3599 | extsymoff = symtab_hdr->sh_info; | |
3600 | else | |
3601 | { | |
3602 | /* The symbol table does not follow the rule that local symbols | |
3603 | must come before globals. */ | |
3604 | extsymoff = 0; | |
3605 | } | |
3606 | ||
3607 | /* Figure out the value of the symbol. */ | |
3608 | if (local_p) | |
3609 | { | |
3610 | Elf_Internal_Sym *sym; | |
3611 | ||
3612 | sym = local_syms + r_symndx; | |
3613 | sec = local_sections[r_symndx]; | |
3614 | ||
3615 | symbol = sec->output_section->vma + sec->output_offset; | |
3616 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3617 | symbol += sym->st_value; | |
3618 | ||
a17aee54 TS |
3619 | /* MIPS16 text labels should be treated as odd. */ |
3620 | if (sym->st_other == STO_MIPS16) | |
3621 | ++symbol; | |
3622 | ||
5b6a02bc TS |
3623 | /* Record the name of this symbol, for our caller. */ |
3624 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
3625 | symtab_hdr->sh_link, | |
3626 | sym->st_name); | |
3627 | if (*namep == '\0') | |
3628 | *namep = bfd_section_name (input_bfd, sec); | |
a17aee54 TS |
3629 | |
3630 | target_is_16_bit_code_p = (sym->st_other == STO_MIPS16); | |
5b6a02bc TS |
3631 | } |
3632 | else | |
3633 | { | |
3634 | /* For global symbols we look up the symbol in the hash-table. */ | |
3635 | h = ((struct mips_elf64_link_hash_entry *) | |
3636 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
3637 | /* Find the real hash-table entry for this symbol. */ | |
3638 | while (h->root.root.type == bfd_link_hash_indirect | |
3639 | || h->root.root.type == bfd_link_hash_warning) | |
3640 | h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; | |
3641 | ||
3642 | /* Record the name of this symbol, for our caller. */ | |
3643 | *namep = h->root.root.root.string; | |
3644 | ||
3645 | /* If this symbol is defined, calculate its address. */ | |
3646 | if ((h->root.root.type == bfd_link_hash_defined | |
3647 | || h->root.root.type == bfd_link_hash_defweak) | |
3648 | && h->root.root.u.def.section) | |
3649 | { | |
3650 | sec = h->root.root.u.def.section; | |
3651 | if (sec->output_section) | |
3652 | symbol = (h->root.root.u.def.value | |
3653 | + sec->output_section->vma | |
3654 | + sec->output_offset); | |
3655 | else | |
3656 | symbol = h->root.root.u.def.value; | |
3657 | } | |
3658 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
3659 | /* We allow relocations against undefined weak symbols, giving | |
3660 | it the value zero, so that you can undefined weak functions | |
3661 | and check to see if they exist by looking at their | |
3662 | addresses. */ | |
3663 | symbol = 0; | |
a17aee54 TS |
3664 | else if (info->shared |
3665 | && (!info->symbolic || info->allow_shlib_undefined) | |
3666 | && !info->no_undefined | |
5b6a02bc TS |
3667 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
3668 | symbol = 0; | |
3669 | else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 || | |
3670 | strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0) | |
3671 | { | |
3672 | /* If this is a dynamic link, we should have created a | |
3673 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
3674 | in in mips_elf64_create_dynamic_sections. | |
3675 | Otherwise, we should define the symbol with a value of 0. | |
3676 | FIXME: It should probably get into the symbol table | |
3677 | somehow as well. */ | |
3678 | BFD_ASSERT (! info->shared); | |
3679 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
3680 | symbol = 0; | |
3681 | } | |
3682 | else | |
3683 | { | |
3684 | if (! ((*info->callbacks->undefined_symbol) | |
3685 | (info, h->root.root.root.string, input_bfd, | |
3686 | input_section, relocation->r_offset, | |
3687 | (!info->shared || info->no_undefined | |
3688 | || ELF_ST_VISIBILITY (h->root.other))))) | |
3689 | return bfd_reloc_undefined; | |
3690 | symbol = 0; | |
3691 | } | |
a17aee54 TS |
3692 | |
3693 | target_is_16_bit_code_p = (h->root.other == STO_MIPS16); | |
3694 | } | |
3695 | ||
3696 | /* If this is a 64-bit call to a 16-bit function with a stub, we | |
3697 | need to redirect the call to the stub, unless we're already *in* | |
3698 | a stub. */ | |
3699 | if (r_type != R_MIPS16_26 && !info->relocateable | |
3700 | && ((h != NULL && h->fn_stub != NULL) | |
3701 | || (local_p && elf_tdata (input_bfd)->local_stubs != NULL | |
3702 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
3703 | && !mips_elf64_stub_section_p (input_bfd, input_section)) | |
3704 | { | |
3705 | /* This is a 64-bit call to a 16-bit function. We should | |
3706 | have already noticed that we were going to need the | |
3707 | stub. */ | |
3708 | if (local_p) | |
3709 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
3710 | else | |
3711 | { | |
3712 | BFD_ASSERT (h->need_fn_stub); | |
3713 | sec = h->fn_stub; | |
3714 | } | |
3715 | ||
3716 | symbol = sec->output_section->vma + sec->output_offset; | |
3717 | } | |
3718 | /* If this is a 16-bit call to a 64-bit function with a stub, we | |
3719 | need to redirect the call to the stub. */ | |
3720 | else if (r_type == R_MIPS16_26 && !info->relocateable | |
3721 | && h != NULL | |
3722 | && (h->call_stub != NULL || h->call_fp_stub != NULL) | |
3723 | && !target_is_16_bit_code_p) | |
3724 | { | |
3725 | /* If both call_stub and call_fp_stub are defined, we can figure | |
3726 | out which one to use by seeing which one appears in the input | |
3727 | file. */ | |
3728 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
3729 | { | |
3730 | asection *o; | |
3731 | ||
3732 | sec = NULL; | |
3733 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
3734 | { | |
3735 | if (strncmp (bfd_get_section_name (input_bfd, o), | |
3736 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
3737 | { | |
3738 | sec = h->call_fp_stub; | |
3739 | break; | |
3740 | } | |
3741 | } | |
3742 | if (sec == NULL) | |
3743 | sec = h->call_stub; | |
3744 | } | |
3745 | else if (h->call_stub != NULL) | |
3746 | sec = h->call_stub; | |
3747 | else | |
3748 | sec = h->call_fp_stub; | |
3749 | ||
3750 | BFD_ASSERT (sec->_raw_size > 0); | |
3751 | symbol = sec->output_section->vma + sec->output_offset; | |
5b6a02bc TS |
3752 | } |
3753 | ||
a17aee54 TS |
3754 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
3755 | special jalx instruction. */ | |
3756 | *require_jalxp = (!info->relocateable | |
3757 | && ((r_type == R_MIPS16_26) != target_is_16_bit_code_p)); | |
3758 | ||
3759 | local_p = mips_elf64_local_relocation_p (input_bfd, relocation, | |
3760 | local_sections, true); | |
3761 | ||
5b6a02bc TS |
3762 | /* If we haven't already determined the GOT offset, or the GP value, |
3763 | and we're going to need it, get it now. */ | |
3764 | switch (r_type) | |
3765 | { | |
3766 | case R_MIPS_CALL16: | |
3767 | case R_MIPS_GOT16: | |
3768 | case R_MIPS_GOT_DISP: | |
3769 | case R_MIPS_GOT_HI16: | |
3770 | case R_MIPS_CALL_HI16: | |
3771 | case R_MIPS_GOT_LO16: | |
3772 | case R_MIPS_CALL_LO16: | |
3773 | /* Find the index into the GOT where this value is located. */ | |
3774 | if (!local_p) | |
3775 | { | |
3776 | BFD_ASSERT (addend == 0); | |
3777 | g = mips_elf64_global_got_index (elf_hash_table (info)->dynobj, | |
3778 | (struct elf_link_hash_entry*) h); | |
3779 | if (! elf_hash_table(info)->dynamic_sections_created | |
3780 | || (info->shared | |
3781 | && (info->symbolic || h->root.dynindx == -1) | |
3782 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
3783 | { | |
3784 | /* This is a static link or a -Bsymbolic link. The | |
3785 | symbol is defined locally, or was forced to be local. | |
3786 | We must initialize this entry in the GOT. */ | |
3787 | bfd *tmpbfd = elf_hash_table (info)->dynobj; | |
3788 | ||
3789 | asection *sgot = bfd_get_section_by_name (tmpbfd, ".got"); | |
3790 | bfd_put_64 (tmpbfd, symbol + addend, sgot->contents + g); | |
3791 | } | |
3792 | } | |
a17aee54 | 3793 | else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16) |
5b6a02bc TS |
3794 | /* There's no need to create a local GOT entry here; the |
3795 | calculation for a local GOT16 entry does not involve G. */ | |
3796 | break; | |
3797 | else | |
3798 | { | |
3799 | g = mips_elf64_local_got_index (abfd, info, symbol + addend); | |
3800 | if (g == (bfd_vma) -1) | |
3801 | return false; | |
3802 | } | |
3803 | ||
3804 | /* Convert GOT indices to actual offsets. */ | |
3805 | g = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, | |
a17aee54 | 3806 | abfd, g); |
5b6a02bc TS |
3807 | break; |
3808 | ||
3809 | case R_MIPS_HI16: | |
3810 | case R_MIPS_LO16: | |
3811 | case R_MIPS_GPREL16: | |
3812 | case R_MIPS_GPREL32: | |
3813 | case R_MIPS_LITERAL: | |
3814 | gp0 = _bfd_get_gp_value (input_bfd); | |
3815 | gp = _bfd_get_gp_value (abfd); | |
3816 | break; | |
3817 | ||
3818 | default: | |
3819 | break; | |
3820 | } | |
3821 | ||
3822 | /* Figure out what kind of relocation is being performed. */ | |
3823 | switch (r_type) | |
3824 | { | |
3825 | case R_MIPS_NONE: | |
3826 | return bfd_reloc_continue; | |
3827 | ||
3828 | case R_MIPS_16: | |
3829 | value = symbol + mips_elf64_sign_extend (addend, 16); | |
3830 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3831 | break; | |
3832 | ||
3833 | case R_MIPS_32: | |
3834 | case R_MIPS_REL32: | |
3835 | case R_MIPS_64: | |
3836 | if ((info->shared | |
3837 | || (elf_hash_table (info)->dynamic_sections_created | |
3838 | && h != NULL | |
a17aee54 TS |
3839 | && ((h->root.elf_link_hash_flags |
3840 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0) | |
3841 | && ((h->root.elf_link_hash_flags | |
3842 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
3843 | && r_symndx != 0 | |
5b6a02bc TS |
3844 | && (input_section->flags & SEC_ALLOC) != 0) |
3845 | { | |
3846 | /* If we're creating a shared library, or this relocation is | |
3847 | against a symbol in a shared library, then we can't know | |
3848 | where the symbol will end up. So, we create a relocation | |
3849 | record in the output, and leave the job up to the dynamic | |
3850 | linker. */ | |
3851 | value = addend; | |
3852 | if (!mips_elf64_create_dynamic_relocation (abfd, info, relocation, | |
3853 | h, sec, symbol, &value, | |
a17aee54 | 3854 | input_section)) |
5b6a02bc TS |
3855 | return false; |
3856 | } | |
3857 | else | |
3858 | { | |
3859 | if (r_type != R_MIPS_REL32) | |
3860 | value = symbol + addend; | |
3861 | else | |
3862 | value = addend; | |
3863 | } | |
3864 | value &= howto->dst_mask; | |
3865 | break; | |
3866 | ||
3867 | case R_MIPS_PC32: | |
3868 | case R_MIPS_PC64: | |
3869 | case R_MIPS_GNU_REL_LO16: | |
3870 | value = symbol + addend - p; | |
3871 | value &= howto->dst_mask; | |
3872 | break; | |
3873 | ||
3874 | case R_MIPS_GNU_REL16_S2: | |
3875 | value = symbol + mips_elf64_sign_extend (addend << 2, 18) - p; | |
3876 | overflowed_p = mips_elf64_overflow_p (value, 18); | |
3877 | value = (value >> 2) & howto->dst_mask; | |
3878 | break; | |
3879 | ||
3880 | case R_MIPS_GNU_REL_HI16: | |
3881 | value = mips_elf64_high (addend + symbol - p); | |
3882 | value &= howto->dst_mask; | |
3883 | break; | |
3884 | ||
a17aee54 TS |
3885 | case R_MIPS16_26: |
3886 | /* The calculation for R_MIPS16_26 is just the same as for an | |
3887 | R_MIPS_26. It's only the storage of the relocated field into | |
3888 | the output file that's different. That's handled in | |
3889 | mips_elf_perform_relocation. So, we just fall through to the | |
3890 | R_MIPS_26 case here. */ | |
5b6a02bc TS |
3891 | case R_MIPS_26: |
3892 | if (local_p) | |
a17aee54 | 3893 | value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2; |
5b6a02bc TS |
3894 | else |
3895 | value = (mips_elf64_sign_extend (addend << 2, 28) + symbol) >> 2; | |
3896 | value &= howto->dst_mask; | |
3897 | break; | |
3898 | ||
3899 | case R_MIPS_HI16: | |
3900 | value = mips_elf64_high (addend + symbol); | |
3901 | value &= howto->dst_mask; | |
3902 | break; | |
3903 | ||
3904 | case R_MIPS_LO16: | |
3905 | value = (addend + symbol) & 0xffff; | |
3906 | value &= howto->dst_mask; | |
3907 | break; | |
3908 | ||
3909 | case R_MIPS_LITERAL: | |
3910 | /* Because we don't merge literal sections, we can handle this | |
3911 | just like R_MIPS_GPREL16. In the long run, we should merge | |
3912 | shared literals, and then we will need to additional work | |
3913 | here. */ | |
3914 | ||
3915 | /* Fall through. */ | |
3916 | ||
3917 | case R_MIPS_GPREL16: | |
3918 | if (local_p) | |
3919 | value = mips_elf64_sign_extend (addend, 16) + symbol + gp0 - gp; | |
3920 | else | |
3921 | value = mips_elf64_sign_extend (addend, 16) + symbol - gp; | |
3922 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3923 | break; | |
3924 | ||
3925 | case R_MIPS_PC16: | |
3926 | value = mips_elf64_sign_extend (addend, 16) + symbol - p; | |
3927 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3928 | value = (bfd_vma) ((bfd_signed_vma) value / 4); | |
3929 | break; | |
3930 | ||
3931 | case R_MIPS_GOT16: | |
a17aee54 | 3932 | case R_MIPS_CALL16: |
5b6a02bc TS |
3933 | if (local_p) |
3934 | { | |
3935 | boolean forced; | |
3936 | ||
3937 | /* The special case is when the symbol is forced to be local. We | |
3938 | need the full address in the GOT since no R_MIPS_LO16 relocation | |
3939 | follows. */ | |
3940 | forced = ! mips_elf64_local_relocation_p (input_bfd, relocation, | |
3941 | local_sections, false); | |
3942 | value = mips_elf64_got16_entry (abfd, info, symbol + addend, forced); | |
3943 | if (value == (bfd_vma) -1) | |
3944 | return false; | |
3945 | value | |
3946 | = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, | |
3947 | abfd, | |
3948 | value); | |
3949 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3950 | break; | |
3951 | } | |
3952 | ||
3953 | /* Fall through. */ | |
3954 | ||
5b6a02bc TS |
3955 | case R_MIPS_GOT_DISP: |
3956 | value = g; | |
3957 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3958 | break; | |
3959 | ||
3960 | case R_MIPS_GPREL32: | |
3961 | value = (addend + symbol + gp0 - gp) & howto->dst_mask; | |
3962 | break; | |
3963 | ||
3964 | case R_MIPS_GOT_HI16: | |
3965 | case R_MIPS_CALL_HI16: | |
3966 | /* We're allowed to handle these two relocations identically. | |
3967 | The dynamic linker is allowed to handle the CALL relocations | |
3968 | differently by creating a lazy evaluation stub. */ | |
3969 | value = g; | |
3970 | value = mips_elf64_high (value); | |
3971 | value &= howto->dst_mask; | |
3972 | break; | |
3973 | ||
3974 | case R_MIPS_GOT_LO16: | |
3975 | case R_MIPS_CALL_LO16: | |
3976 | value = g & howto->dst_mask; | |
3977 | break; | |
3978 | ||
3979 | case R_MIPS_GOT_PAGE: | |
3980 | value = mips_elf64_got_page (abfd, info, symbol + addend, NULL); | |
3981 | if (value == (bfd_vma) -1) | |
3982 | return false; | |
3983 | value = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, | |
3984 | abfd, | |
3985 | value); | |
3986 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3987 | break; | |
3988 | ||
3989 | case R_MIPS_GOT_OFST: | |
3990 | mips_elf64_got_page (abfd, info, symbol + addend, &value); | |
3991 | overflowed_p = mips_elf64_overflow_p (value, 16); | |
3992 | break; | |
3993 | ||
3994 | case R_MIPS_SUB: | |
3995 | value = symbol - addend; | |
3996 | value &= howto->dst_mask; | |
3997 | break; | |
3998 | ||
3999 | case R_MIPS_HIGHER: | |
4000 | value = mips_elf64_higher (addend + symbol); | |
4001 | value &= howto->dst_mask; | |
4002 | break; | |
4003 | ||
4004 | case R_MIPS_HIGHEST: | |
4005 | value = mips_elf64_highest (addend + symbol); | |
4006 | value &= howto->dst_mask; | |
4007 | break; | |
4008 | ||
4009 | case R_MIPS_SCN_DISP: | |
4010 | value = symbol + addend - sec->output_offset; | |
4011 | value &= howto->dst_mask; | |
4012 | break; | |
4013 | ||
4014 | case R_MIPS_PJUMP: | |
4015 | case R_MIPS_JALR: | |
4016 | /* Both of these may be ignored. R_MIPS_JALR is an optimization | |
4017 | hint; we could improve performance by honoring that hint. */ | |
4018 | return bfd_reloc_continue; | |
4019 | ||
4020 | case R_MIPS_GNU_VTINHERIT: | |
4021 | case R_MIPS_GNU_VTENTRY: | |
4022 | /* We don't do anything with these at present. */ | |
4023 | return bfd_reloc_continue; | |
4024 | ||
4025 | default: | |
4026 | /* An unrecognized relocation type. */ | |
4027 | return bfd_reloc_notsupported; | |
4028 | } | |
4029 | ||
4030 | /* Store the VALUE for our caller. */ | |
4031 | *valuep = value; | |
4032 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
4033 | } | |
4034 | \f | |
4035 | /* Obtain the field relocated by RELOCATION. */ | |
4036 | ||
4037 | static bfd_vma | |
4038 | mips_elf64_obtain_contents (howto, relocation, input_bfd, contents) | |
4039 | reloc_howto_type *howto; | |
4040 | const Elf_Internal_Rela *relocation; | |
4041 | bfd *input_bfd; | |
4042 | bfd_byte *contents; | |
4043 | { | |
4044 | bfd_byte *location = contents + relocation->r_offset; | |
4045 | ||
4046 | /* Obtain the bytes. */ | |
4047 | return bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location); | |
4048 | } | |
4049 | ||
4050 | /* It has been determined that the result of the RELOCATION is the | |
4051 | VALUE. Use HOWTO to place VALUE into the output file at the | |
4052 | appropriate position. The SECTION is the section to which the | |
a17aee54 TS |
4053 | relocation applies. If REQUIRE_JALX is true, then the opcode used |
4054 | for the relocation must be either JAL or JALX, and it is | |
4055 | unconditionally converted to JALX. | |
5b6a02bc TS |
4056 | |
4057 | Returns false if anything goes wrong. */ | |
4058 | ||
4059 | static boolean | |
a17aee54 TS |
4060 | mips_elf64_perform_relocation (info, howto, relocation, value, |
4061 | input_bfd, input_section, | |
4062 | contents, require_jalx) | |
4063 | struct bfd_link_info *info; | |
5b6a02bc TS |
4064 | reloc_howto_type *howto; |
4065 | const Elf_Internal_Rela *relocation; | |
4066 | bfd_vma value; | |
a17aee54 TS |
4067 | bfd *input_bfd; |
4068 | asection *input_section; | |
5b6a02bc | 4069 | bfd_byte *contents; |
a17aee54 | 4070 | boolean require_jalx; |
5b6a02bc | 4071 | { |
a17aee54 TS |
4072 | bfd_vma x; |
4073 | bfd_byte *location; | |
4074 | int r_type = ELF32_R_TYPE (relocation->r_info); | |
4075 | ||
4076 | /* Figure out where the relocation is occurring. */ | |
4077 | location = contents + relocation->r_offset; | |
4078 | ||
4079 | /* Obtain the current value. */ | |
4080 | x = mips_elf64_obtain_contents (howto, relocation, input_bfd, contents); | |
4081 | ||
4082 | /* Clear the field we are setting. */ | |
4083 | x &= ~howto->dst_mask; | |
4084 | ||
4085 | /* If this is the R_MIPS16_26 relocation, we must store the | |
4086 | value in a funny way. */ | |
4087 | if (r_type == R_MIPS16_26) | |
4088 | { | |
4089 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. | |
4090 | Most mips16 instructions are 16 bits, but these instructions | |
4091 | are 32 bits. | |
4092 | ||
4093 | The format of these instructions is: | |
4094 | ||
4095 | +--------------+--------------------------------+ | |
4096 | ! JALX ! X! Imm 20:16 ! Imm 25:21 ! | |
4097 | +--------------+--------------------------------+ | |
4098 | ! Immediate 15:0 ! | |
4099 | +-----------------------------------------------+ | |
4100 | ||
4101 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
4102 | Note that the immediate value in the first word is swapped. | |
4103 | ||
4104 | When producing a relocateable object file, R_MIPS16_26 is | |
4105 | handled mostly like R_MIPS_26. In particular, the addend is | |
4106 | stored as a straight 26-bit value in a 32-bit instruction. | |
4107 | (gas makes life simpler for itself by never adjusting a | |
4108 | R_MIPS16_26 reloc to be against a section, so the addend is | |
4109 | always zero). However, the 32 bit instruction is stored as 2 | |
4110 | 16-bit values, rather than a single 32-bit value. In a | |
4111 | big-endian file, the result is the same; in a little-endian | |
4112 | file, the two 16-bit halves of the 32 bit value are swapped. | |
4113 | This is so that a disassembler can recognize the jal | |
4114 | instruction. | |
4115 | ||
4116 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
4117 | instruction stored as two 16-bit values. The addend A is the | |
4118 | contents of the targ26 field. The calculation is the same as | |
4119 | R_MIPS_26. When storing the calculated value, reorder the | |
4120 | immediate value as shown above, and don't forget to store the | |
4121 | value as two 16-bit values. | |
4122 | ||
4123 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
4124 | defined as | |
4125 | ||
4126 | big-endian: | |
4127 | +--------+----------------------+ | |
4128 | | | | | |
4129 | | | targ26-16 | | |
4130 | |31 26|25 0| | |
4131 | +--------+----------------------+ | |
4132 | ||
4133 | little-endian: | |
4134 | +----------+------+-------------+ | |
4135 | | | | | | |
4136 | | sub1 | | sub2 | | |
4137 | |0 9|10 15|16 31| | |
4138 | +----------+--------------------+ | |
4139 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
4140 | ((sub1 << 16) | sub2)). | |
4141 | ||
4142 | When producing a relocateable object file, the calculation is | |
4143 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
4144 | When producing a fully linked file, the calculation is | |
4145 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
4146 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */ | |
4147 | ||
4148 | if (!info->relocateable) | |
4149 | /* Shuffle the bits according to the formula above. */ | |
4150 | value = (((value & 0x1f0000) << 5) | |
4151 | | ((value & 0x3e00000) >> 5) | |
4152 | | (value & 0xffff)); | |
4153 | } | |
4154 | else if (r_type == R_MIPS16_GPREL) | |
4155 | { | |
4156 | /* R_MIPS16_GPREL is used for GP-relative addressing in mips16 | |
4157 | mode. A typical instruction will have a format like this: | |
4158 | ||
4159 | +--------------+--------------------------------+ | |
4160 | ! EXTEND ! Imm 10:5 ! Imm 15:11 ! | |
4161 | +--------------+--------------------------------+ | |
4162 | ! Major ! rx ! ry ! Imm 4:0 ! | |
4163 | +--------------+--------------------------------+ | |
4164 | ||
4165 | EXTEND is the five bit value 11110. Major is the instruction | |
4166 | opcode. | |
4167 | ||
4168 | This is handled exactly like R_MIPS_GPREL16, except that the | |
4169 | addend is retrieved and stored as shown in this diagram; that | |
4170 | is, the Imm fields above replace the V-rel16 field. | |
4171 | ||
4172 | All we need to do here is shuffle the bits appropriately. As | |
4173 | above, the two 16-bit halves must be swapped on a | |
4174 | little-endian system. */ | |
4175 | value = (((value & 0x7e0) << 16) | |
4176 | | ((value & 0xf800) << 5) | |
4177 | | (value & 0x1f)); | |
4178 | } | |
5b6a02bc TS |
4179 | |
4180 | /* Set the field. */ | |
a17aee54 TS |
4181 | x |= (value & howto->dst_mask); |
4182 | ||
4183 | /* If required, turn JAL into JALX. */ | |
4184 | if (require_jalx) | |
4185 | { | |
4186 | boolean ok; | |
4187 | bfd_vma opcode = x >> 26; | |
4188 | bfd_vma jalx_opcode; | |
4189 | ||
4190 | /* Check to see if the opcode is already JAL or JALX. */ | |
4191 | if (r_type == R_MIPS16_26) | |
4192 | { | |
4193 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
4194 | jalx_opcode = 0x7; | |
4195 | } | |
4196 | else | |
4197 | { | |
4198 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
4199 | jalx_opcode = 0x1d; | |
4200 | } | |
4201 | ||
4202 | /* If the opcode is not JAL or JALX, there's a problem. */ | |
4203 | if (!ok) | |
4204 | { | |
4205 | (*_bfd_error_handler) | |
4206 | (_("%s: %s+0x%lx: jump to stub routine which is not jal"), | |
4207 | bfd_archive_filename (input_bfd), | |
4208 | input_section->name, | |
4209 | (unsigned long) relocation->r_offset); | |
4210 | bfd_set_error (bfd_error_bad_value); | |
4211 | return false; | |
4212 | } | |
4213 | ||
4214 | /* Make this the JALX opcode. */ | |
4215 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
4216 | } | |
4217 | ||
4218 | /* Swap the high- and low-order 16 bits on little-endian systems | |
4219 | when doing a MIPS16 relocation. */ | |
4220 | if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26) | |
4221 | && bfd_little_endian (input_bfd)) | |
4222 | x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16)); | |
4223 | ||
5b6a02bc | 4224 | /* Put the value into the output. */ |
a17aee54 | 4225 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); |
5b6a02bc TS |
4226 | return true; |
4227 | } | |
4228 | ||
a17aee54 TS |
4229 | /* Returns true if SECTION is a MIPS16 stub section. */ |
4230 | ||
4231 | static boolean | |
4232 | mips_elf64_stub_section_p (abfd, section) | |
4233 | bfd *abfd ATTRIBUTE_UNUSED; | |
4234 | asection *section; | |
4235 | { | |
4236 | const char *name = bfd_get_section_name (abfd, section); | |
4237 | ||
4238 | return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0 | |
4239 | || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
4240 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0); | |
4241 | } | |
4242 | ||
5b6a02bc TS |
4243 | /* Relocate a MIPS ELF64 section. */ |
4244 | ||
4245 | static boolean | |
4246 | mips_elf64_relocate_section (output_bfd, info, input_bfd, input_section, | |
4247 | contents, relocs, local_syms, local_sections) | |
4248 | bfd *output_bfd; | |
4249 | struct bfd_link_info *info; | |
4250 | bfd *input_bfd; | |
4251 | asection *input_section; | |
4252 | bfd_byte *contents; | |
4253 | Elf_Internal_Rela *relocs; | |
4254 | Elf_Internal_Sym *local_syms; | |
4255 | asection **local_sections; | |
4256 | { | |
4257 | Elf_Internal_Rela *rel; | |
4258 | const Elf_Internal_Rela *relend; | |
4259 | bfd_vma addend = 0; | |
4260 | boolean use_saved_addend_p = false; | |
4261 | struct elf_backend_data *bed; | |
4262 | ||
4263 | bed = get_elf_backend_data (output_bfd); | |
4264 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
4265 | for (rel = relocs; rel < relend; ++rel) | |
4266 | { | |
4267 | const char *name; | |
4268 | bfd_vma value; | |
4269 | reloc_howto_type *howto; | |
a17aee54 | 4270 | boolean require_jalx; |
5b6a02bc TS |
4271 | /* True if the relocation is a RELA relocation, rather than a |
4272 | REL relocation. */ | |
4273 | boolean rela_relocation_p = true; | |
4274 | int r_type = ELF64_MIPS_R_TYPE (rel->r_info); | |
a17aee54 | 4275 | const char *msg = (const char *) NULL; |
5b6a02bc TS |
4276 | |
4277 | /* Find the relocation howto for this relocation. */ | |
4278 | howto = &mips_elf64_howto_table_rela[r_type]; | |
4279 | ||
4280 | if (!use_saved_addend_p) | |
4281 | { | |
4282 | Elf_Internal_Shdr *rel_hdr; | |
4283 | ||
4284 | /* If these relocations were originally of the REL variety, | |
4285 | we must pull the addend out of the field that will be | |
4286 | relocated. Otherwise, we simply use the contents of the | |
4287 | RELA relocation. To determine which flavor or relocation | |
4288 | this is, we depend on the fact that the INPUT_SECTION's | |
4289 | REL_HDR is read before its REL_HDR2. */ | |
4290 | rel_hdr = &elf_section_data (input_section)->rel_hdr; | |
4291 | if ((size_t) (rel - relocs) | |
a17aee54 | 4292 | >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) |
5b6a02bc TS |
4293 | rel_hdr = elf_section_data (input_section)->rel_hdr2; |
4294 | if (rel_hdr->sh_entsize | |
4295 | == (get_elf_backend_data (input_bfd)->s->sizeof_rel)) | |
4296 | { | |
4297 | /* Note that this is a REL relocation. */ | |
4298 | rela_relocation_p = false; | |
4299 | ||
4300 | /* Find the relocation howto for this relocation. */ | |
4301 | howto = &mips_elf64_howto_table_rel[r_type]; | |
4302 | ||
4303 | /* Get the addend, which is stored in the input file. */ | |
4304 | addend = mips_elf64_obtain_contents (howto, | |
4305 | rel, | |
4306 | input_bfd, | |
4307 | contents); | |
4308 | addend &= howto->src_mask; | |
4309 | ||
4310 | /* For some kinds of relocations, the ADDEND is a | |
4311 | combination of the addend stored in two different | |
4312 | relocations. */ | |
4313 | if (r_type == R_MIPS_HI16 | |
4314 | || r_type == R_MIPS_GNU_REL_HI16 | |
4315 | || (r_type == R_MIPS_GOT16 | |
4316 | && mips_elf64_local_relocation_p (input_bfd, rel, | |
4317 | local_sections, false))) | |
4318 | { | |
4319 | bfd_vma l; | |
4320 | const Elf_Internal_Rela *lo16_relocation; | |
4321 | reloc_howto_type *lo16_howto; | |
4322 | int lo; | |
4323 | ||
4324 | /* The combined value is the sum of the HI16 addend, | |
4325 | left-shifted by sixteen bits, and the LO16 | |
4326 | addend, sign extended. (Usually, the code does | |
4327 | a `lui' of the HI16 value, and then an `addiu' of | |
4328 | the LO16 value.) | |
4329 | ||
4330 | Scan ahead to find a matching LO16 relocation. */ | |
4331 | if (r_type == R_MIPS_GNU_REL_HI16) | |
4332 | lo = R_MIPS_GNU_REL_LO16; | |
4333 | else | |
4334 | lo = R_MIPS_LO16; | |
4335 | lo16_relocation | |
4336 | = mips_elf64_next_relocation (lo, rel, relend); | |
4337 | if (lo16_relocation == NULL) | |
4338 | return false; | |
4339 | ||
4340 | /* Obtain the addend kept there. */ | |
4341 | if (rela_relocation_p == false) | |
4342 | lo16_howto = &mips_elf64_howto_table_rel[lo]; | |
4343 | else | |
4344 | lo16_howto = &mips_elf64_howto_table_rela[lo]; | |
4345 | l = mips_elf64_obtain_contents (lo16_howto, | |
4346 | lo16_relocation, | |
4347 | input_bfd, contents); | |
4348 | l &= lo16_howto->src_mask; | |
4349 | l = mips_elf64_sign_extend (l, 16); | |
4350 | ||
4351 | addend <<= 16; | |
4352 | ||
4353 | /* Compute the combined addend. */ | |
4354 | addend += l; | |
4355 | } | |
4356 | } | |
4357 | else | |
4358 | addend = rel->r_addend; | |
4359 | } | |
4360 | ||
4361 | if (info->relocateable) | |
4362 | { | |
4363 | Elf_Internal_Sym *sym; | |
4364 | unsigned long r_symndx; | |
4365 | ||
4366 | /* Since we're just relocating, all we need to do is copy | |
4367 | the relocations back out to the object file, unless | |
4368 | they're against a section symbol, in which case we need | |
4369 | to adjust by the section offset, or unless they're GP | |
4370 | relative in which case we need to adjust by the amount | |
4371 | that we're adjusting GP in this relocateable object. */ | |
4372 | ||
4373 | if (!mips_elf64_local_relocation_p (input_bfd, rel, local_sections, | |
4374 | false)) | |
4375 | /* There's nothing to do for non-local relocations. */ | |
4376 | continue; | |
4377 | ||
4378 | if (r_type == R_MIPS_GPREL16 | |
4379 | || r_type == R_MIPS_GPREL32 | |
4380 | || r_type == R_MIPS_LITERAL) | |
4381 | addend -= (_bfd_get_gp_value (output_bfd) | |
4382 | - _bfd_get_gp_value (input_bfd)); | |
4383 | else if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2) | |
4384 | /* The addend is stored without its two least | |
4385 | significant bits (which are always zero.) In a | |
4386 | non-relocateable link, calculate_relocation will do | |
4387 | this shift; here, we must do it ourselves. */ | |
4388 | addend <<= 2; | |
4389 | ||
4390 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4391 | sym = local_syms + r_symndx; | |
4392 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4393 | /* Adjust the addend appropriately. */ | |
4394 | addend += local_sections[r_symndx]->output_offset; | |
4395 | ||
4396 | #if 0 | |
4397 | /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16, | |
4398 | then we only want to write out the high-order 16 bits. | |
4399 | The subsequent R_MIPS_LO16 will handle the low-order bits. */ | |
4400 | if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16 | |
4401 | || r_type == R_MIPS_GNU_REL_HI16) | |
4402 | addend = mips_elf64_high (addend); | |
4403 | else if (r_type == R_MIPS_HIGHER) | |
4404 | addend = mips_elf64_higher (addend); | |
4405 | else if (r_type == R_MIPS_HIGHEST) | |
4406 | addend = mips_elf64_highest (addend); | |
4407 | #endif | |
4408 | /* If the relocation is for an R_MIPS_26 relocation, then | |
4409 | the two low-order bits are not stored in the object file; | |
4410 | they are implicitly zero. */ | |
4411 | if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2) | |
4412 | addend >>= 2; | |
4413 | ||
4414 | if (rela_relocation_p) | |
4415 | /* If this is a RELA relocation, just update the addend. | |
4416 | We have to cast away constness for REL. */ | |
4417 | rel->r_addend = addend; | |
4418 | else | |
4419 | { | |
4420 | /* Otherwise, we have to write the value back out. Note | |
4421 | that we use the source mask, rather than the | |
4422 | destination mask because the place to which we are | |
4423 | writing will be source of the addend in the final | |
4424 | link. */ | |
4425 | addend &= howto->src_mask; | |
4426 | ||
a17aee54 TS |
4427 | if (!mips_elf64_perform_relocation (info, howto, rel, addend, |
4428 | input_bfd, input_section, | |
4429 | contents, false)) | |
5b6a02bc TS |
4430 | return false; |
4431 | } | |
4432 | ||
4433 | /* Go on to the next relocation. */ | |
4434 | continue; | |
4435 | } | |
4436 | ||
4437 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
4438 | relocations for the same offset. In that case we are | |
4439 | supposed to treat the output of each relocation as the addend | |
4440 | for the next. */ | |
4441 | if (rel + 1 < relend | |
4442 | && rel->r_offset == rel[1].r_offset | |
4443 | && ELF64_MIPS_R_TYPE (rel[1].r_info) != R_MIPS_NONE) | |
4444 | use_saved_addend_p = true; | |
4445 | else | |
4446 | use_saved_addend_p = false; | |
4447 | ||
4448 | /* Figure out what value we are supposed to relocate. */ | |
a17aee54 TS |
4449 | switch (mips_elf64_calculate_relocation (output_bfd, input_bfd, |
4450 | input_section, info, rel, | |
4451 | addend, howto, local_syms, | |
4452 | local_sections, &value, &name, | |
4453 | &require_jalx)) | |
5b6a02bc TS |
4454 | { |
4455 | case bfd_reloc_continue: | |
4456 | /* There's nothing to do. */ | |
4457 | continue; | |
4458 | ||
4459 | case bfd_reloc_undefined: | |
4460 | /* mips_elf64_calculate_relocation already called the | |
4461 | undefined_symbol callback. There's no real point in | |
4462 | trying to perform the relocation at this point, so we | |
4463 | just skip ahead to the next relocation. */ | |
4464 | continue; | |
4465 | ||
4466 | case bfd_reloc_notsupported: | |
a17aee54 TS |
4467 | msg = _("internal error: unsupported relocation error"); |
4468 | info->callbacks->warning | |
4469 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
4470 | return false; | |
5b6a02bc TS |
4471 | |
4472 | case bfd_reloc_overflow: | |
4473 | if (use_saved_addend_p) | |
4474 | /* Ignore overflow until we reach the last relocation for | |
4475 | a given location. */ | |
4476 | ; | |
4477 | else | |
4478 | { | |
4479 | BFD_ASSERT (name != NULL); | |
4480 | if (! ((*info->callbacks->reloc_overflow) | |
4481 | (info, name, howto->name, (bfd_vma) 0, | |
4482 | input_bfd, input_section, rel->r_offset))) | |
4483 | return false; | |
4484 | } | |
4485 | break; | |
4486 | ||
4487 | case bfd_reloc_ok: | |
4488 | break; | |
4489 | ||
4490 | default: | |
4491 | abort (); | |
4492 | break; | |
4493 | } | |
4494 | ||
4495 | /* If we've got another relocation for the address, keep going | |
4496 | until we reach the last one. */ | |
4497 | if (use_saved_addend_p) | |
4498 | { | |
4499 | addend = value; | |
4500 | continue; | |
4501 | } | |
4502 | ||
4503 | /* Actually perform the relocation. */ | |
a17aee54 TS |
4504 | if (!mips_elf64_perform_relocation (info, howto, rel, value, input_bfd, |
4505 | input_section, contents, | |
4506 | require_jalx)) | |
5b6a02bc TS |
4507 | return false; |
4508 | } | |
4509 | ||
4510 | return true; | |
4511 | } | |
4512 | ||
4513 | /* Create dynamic sections when linking against a dynamic object. */ | |
4514 | ||
4515 | boolean | |
4516 | mips_elf64_create_dynamic_sections (abfd, info) | |
4517 | bfd *abfd; | |
4518 | struct bfd_link_info *info; | |
4519 | { | |
4520 | flagword flags; | |
4521 | register asection *s; | |
4522 | ||
4523 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4524 | | SEC_LINKER_CREATED | SEC_READONLY); | |
4525 | ||
4526 | /* Mips ABI requests the .dynamic section to be read only. */ | |
4527 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
4528 | if (s != NULL) | |
4529 | { | |
4530 | if (! bfd_set_section_flags (abfd, s, flags)) | |
4531 | return false; | |
4532 | } | |
4533 | ||
4534 | /* We need to create .got section. */ | |
4535 | if (! mips_elf64_create_got_section (abfd, info)) | |
4536 | return false; | |
4537 | ||
4538 | /* Create the .msym section on IRIX6. It is used by the dynamic | |
4539 | linker to speed up dynamic relocations, and to avoid computing | |
4540 | the ELF hash for symbols. */ | |
4541 | if (!mips_elf64_create_msym_section (abfd)) | |
4542 | return false; | |
4543 | ||
4544 | /* Create .stub section. */ | |
4545 | if (bfd_get_section_by_name (abfd, ".MIPS.stubs") == NULL) | |
4546 | { | |
4547 | s = bfd_make_section (abfd, ".MIPS.stubs"); | |
4548 | if (s == NULL | |
4549 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) | |
4550 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
4551 | return false; | |
4552 | } | |
4553 | ||
4554 | return true; | |
4555 | } | |
4556 | ||
4557 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4558 | regular object. The current definition is in some section of the | |
4559 | dynamic object, but we're not including those sections. We have to | |
4560 | change the definition to something the rest of the link can | |
4561 | understand. */ | |
4562 | ||
4563 | boolean | |
4564 | mips_elf64_adjust_dynamic_symbol (info, h) | |
4565 | struct bfd_link_info *info; | |
4566 | struct elf_link_hash_entry *h; | |
4567 | { | |
4568 | bfd *dynobj; | |
4569 | struct mips_elf64_link_hash_entry *hmips; | |
4570 | asection *s; | |
4571 | ||
4572 | dynobj = elf_hash_table (info)->dynobj; | |
4573 | ||
4574 | /* Make sure we know what is going on here. */ | |
4575 | BFD_ASSERT (dynobj != NULL | |
4576 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
4577 | || h->weakdef != NULL | |
4578 | || ((h->elf_link_hash_flags | |
4579 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
4580 | && (h->elf_link_hash_flags | |
4581 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
4582 | && (h->elf_link_hash_flags | |
4583 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
4584 | ||
4585 | /* If this symbol is defined in a dynamic object, we need to copy | |
4586 | any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output | |
4587 | file. */ | |
4588 | hmips = (struct mips_elf64_link_hash_entry *) h; | |
4589 | if (! info->relocateable | |
4590 | && hmips->possibly_dynamic_relocs != 0 | |
a17aee54 TS |
4591 | && (h->root.type == bfd_link_hash_defweak |
4592 | || (h->elf_link_hash_flags | |
4593 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
5b6a02bc TS |
4594 | { |
4595 | mips_elf64_allocate_dynamic_relocations (dynobj, | |
4596 | hmips->possibly_dynamic_relocs); | |
4597 | if (hmips->readonly_reloc) | |
4598 | /* We tell the dynamic linker that there are relocations | |
4599 | against the text segment. */ | |
4600 | info->flags |= DF_TEXTREL; | |
4601 | } | |
4602 | ||
a17aee54 TS |
4603 | /* For a function, create a stub, if allowed. */ |
4604 | if (! hmips->no_fn_stub | |
4605 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
5b6a02bc TS |
4606 | { |
4607 | if (! elf_hash_table (info)->dynamic_sections_created) | |
4608 | return true; | |
4609 | ||
4610 | /* If this symbol is not defined in a regular file, then set | |
4611 | the symbol to the stub location. This is required to make | |
4612 | function pointers compare as equal between the normal | |
4613 | executable and the shared library. */ | |
4614 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
4615 | { | |
4616 | /* We need .stub section. */ | |
4617 | s = bfd_get_section_by_name (dynobj, ".MIPS.stubs"); | |
4618 | BFD_ASSERT (s != NULL); | |
4619 | ||
4620 | h->root.u.def.section = s; | |
4621 | h->root.u.def.value = s->_raw_size; | |
4622 | ||
4623 | /* XXX Write this stub address somewhere. */ | |
4624 | h->plt.offset = s->_raw_size; | |
4625 | ||
4626 | /* Make room for this stub code. */ | |
4627 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
4628 | ||
4629 | /* The last half word of the stub will be filled with the index | |
4630 | of this symbol in .dynsym section. */ | |
4631 | return true; | |
4632 | } | |
4633 | } | |
4634 | else if ((h->type == STT_FUNC) | |
4635 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0) | |
4636 | { | |
4637 | /* This will set the entry for this symbol in the GOT to 0, and | |
4638 | the dynamic linker will take care of this. */ | |
4639 | h->root.u.def.value = 0; | |
4640 | return true; | |
4641 | } | |
4642 | ||
4643 | /* If this is a weak symbol, and there is a real definition, the | |
4644 | processor independent code will have arranged for us to see the | |
4645 | real definition first, and we can just use the same value. */ | |
4646 | if (h->weakdef != NULL) | |
4647 | { | |
4648 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
4649 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
4650 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
4651 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
4652 | return true; | |
4653 | } | |
4654 | ||
4655 | /* This is a reference to a symbol defined by a dynamic object which | |
4656 | is not a function. */ | |
4657 | ||
4658 | return true; | |
4659 | } | |
4660 | ||
4661 | /* This function is called after all the input files have been read, | |
4662 | and the input sections have been assigned to output sections. */ | |
4663 | ||
4664 | boolean | |
4665 | mips_elf64_always_size_sections (output_bfd, info) | |
4666 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
4667 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
4668 | { | |
a17aee54 TS |
4669 | if (info->relocateable |
4670 | || ! mips_elf64_hash_table (info)->mips16_stubs_seen) | |
4671 | return true; | |
4672 | ||
4673 | mips_elf64_link_hash_traverse (mips_elf64_hash_table (info), | |
4674 | mips_elf64_check_mips16_stubs, | |
4675 | (PTR) NULL); | |
4676 | ||
4677 | return true; | |
4678 | } | |
4679 | ||
4680 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
4681 | discard them. */ | |
4682 | ||
4683 | static boolean | |
4684 | mips_elf64_check_mips16_stubs (h, data) | |
4685 | struct mips_elf64_link_hash_entry *h; | |
4686 | PTR data ATTRIBUTE_UNUSED; | |
4687 | { | |
4688 | if (h->fn_stub != NULL | |
4689 | && ! h->need_fn_stub) | |
4690 | { | |
4691 | /* We don't need the fn_stub; the only references to this symbol | |
4692 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
4693 | being included in the link. */ | |
4694 | h->fn_stub->_raw_size = 0; | |
4695 | h->fn_stub->_cooked_size = 0; | |
4696 | h->fn_stub->flags &= ~SEC_RELOC; | |
4697 | h->fn_stub->reloc_count = 0; | |
4698 | h->fn_stub->flags |= SEC_EXCLUDE; | |
4699 | } | |
4700 | ||
4701 | if (h->call_stub != NULL | |
4702 | && h->root.other == STO_MIPS16) | |
4703 | { | |
4704 | /* We don't need the call_stub; this is a 16 bit function, so | |
4705 | calls from other 16 bit functions are OK. Clobber the size | |
4706 | to 0 to prevent it from being included in the link. */ | |
4707 | h->call_stub->_raw_size = 0; | |
4708 | h->call_stub->_cooked_size = 0; | |
4709 | h->call_stub->flags &= ~SEC_RELOC; | |
4710 | h->call_stub->reloc_count = 0; | |
4711 | h->call_stub->flags |= SEC_EXCLUDE; | |
4712 | } | |
4713 | ||
4714 | if (h->call_fp_stub != NULL | |
4715 | && h->root.other == STO_MIPS16) | |
4716 | { | |
4717 | /* We don't need the call_stub; this is a 16 bit function, so | |
4718 | calls from other 16 bit functions are OK. Clobber the size | |
4719 | to 0 to prevent it from being included in the link. */ | |
4720 | h->call_fp_stub->_raw_size = 0; | |
4721 | h->call_fp_stub->_cooked_size = 0; | |
4722 | h->call_fp_stub->flags &= ~SEC_RELOC; | |
4723 | h->call_fp_stub->reloc_count = 0; | |
4724 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
4725 | } | |
4726 | ||
5b6a02bc TS |
4727 | return true; |
4728 | } | |
4729 | ||
4730 | /* Set the sizes of the dynamic sections. */ | |
4731 | ||
4732 | boolean | |
4733 | mips_elf64_size_dynamic_sections (output_bfd, info) | |
4734 | bfd *output_bfd; | |
4735 | struct bfd_link_info *info; | |
4736 | { | |
4737 | bfd *dynobj; | |
4738 | asection *s; | |
4739 | boolean reltext; | |
4740 | struct mips_elf64_got_info *g = NULL; | |
4741 | ||
4742 | dynobj = elf_hash_table (info)->dynobj; | |
4743 | BFD_ASSERT (dynobj != NULL); | |
4744 | ||
4745 | if (elf_hash_table (info)->dynamic_sections_created) | |
4746 | { | |
4747 | /* Set the contents of the .interp section to the interpreter. */ | |
4748 | if (! info->shared) | |
4749 | { | |
4750 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4751 | BFD_ASSERT (s != NULL); | |
4752 | s->_raw_size = strlen ("/usr/lib64/libc.so.1") + 1; | |
4753 | s->contents = (bfd_byte *) "/usr/lib64/libc.so.1"; | |
4754 | } | |
4755 | } | |
4756 | ||
4757 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
4758 | determined the sizes of the various dynamic sections. Allocate | |
4759 | memory for them. */ | |
4760 | reltext = false; | |
4761 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4762 | { | |
4763 | const char *name; | |
4764 | boolean strip; | |
4765 | ||
4766 | /* It's OK to base decisions on the section name, because none | |
4767 | of the dynobj section names depend upon the input files. */ | |
4768 | name = bfd_get_section_name (dynobj, s); | |
4769 | ||
4770 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4771 | continue; | |
4772 | ||
4773 | strip = false; | |
4774 | ||
4775 | if (strncmp (name, ".rel", 4) == 0) | |
4776 | { | |
4777 | if (s->_raw_size == 0) | |
4778 | { | |
4779 | /* We only strip the section if the output section name | |
4780 | has the same name. Otherwise, there might be several | |
4781 | input sections for this output section. FIXME: This | |
4782 | code is probably not needed these days anyhow, since | |
4783 | the linker now does not create empty output sections. */ | |
4784 | if (s->output_section != NULL | |
4785 | && strcmp (name, | |
4786 | bfd_get_section_name (s->output_section->owner, | |
4787 | s->output_section)) == 0) | |
4788 | strip = true; | |
4789 | } | |
4790 | else | |
4791 | { | |
4792 | const char *outname; | |
4793 | asection *target; | |
4794 | ||
4795 | /* If this relocation section applies to a read only | |
4796 | section, then we probably need a DT_TEXTREL entry. | |
4797 | If the relocation section is .rel.dyn, we always | |
4798 | assert a DT_TEXTREL entry rather than testing whether | |
4799 | there exists a relocation to a read only section or | |
4800 | not. */ | |
4801 | outname = bfd_get_section_name (output_bfd, | |
4802 | s->output_section); | |
4803 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
4804 | if ((target != NULL | |
4805 | && (target->flags & SEC_READONLY) != 0 | |
4806 | && (target->flags & SEC_ALLOC) != 0) | |
4807 | || strcmp (outname, "rel.dyn") == 0) | |
4808 | reltext = true; | |
4809 | ||
4810 | /* We use the reloc_count field as a counter if we need | |
4811 | to copy relocs into the output file. */ | |
4812 | if (strcmp (name, "rel.dyn") != 0) | |
4813 | s->reloc_count = 0; | |
4814 | } | |
4815 | } | |
4816 | else if (strncmp (name, ".got", 4) == 0) | |
4817 | { | |
4818 | int i; | |
4819 | bfd_size_type loadable_size = 0; | |
4820 | bfd_size_type local_gotno; | |
4821 | bfd *sub; | |
4822 | ||
4823 | BFD_ASSERT (elf_section_data (s) != NULL); | |
4824 | g = (struct mips_elf64_got_info *) elf_section_data (s)->tdata; | |
4825 | BFD_ASSERT (g != NULL); | |
4826 | ||
4827 | /* Calculate the total loadable size of the output. That | |
4828 | will give us the maximum number of GOT_PAGE entries | |
4829 | required. */ | |
4830 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
4831 | { | |
4832 | asection *subsection; | |
4833 | ||
4834 | for (subsection = sub->sections; | |
4835 | subsection; | |
4836 | subsection = subsection->next) | |
4837 | { | |
4838 | if ((subsection->flags & SEC_ALLOC) == 0) | |
4839 | continue; | |
4840 | loadable_size += (subsection->_raw_size + 0xf) & ~0xf; | |
4841 | } | |
4842 | } | |
4843 | loadable_size += MIPS_FUNCTION_STUB_SIZE; | |
4844 | ||
4845 | /* Assume there are two loadable segments consisting of | |
4846 | contiguous sections. Is 5 enough? */ | |
4847 | local_gotno = (loadable_size >> 16) + 5; | |
4848 | /* It's possible we will need GOT_PAGE entries as well as | |
4849 | GOT16 entries. Often, these will be able to share GOT | |
4850 | entries, but not always. */ | |
4851 | local_gotno *= 2; | |
4852 | ||
4853 | g->local_gotno += local_gotno; | |
4854 | s->_raw_size += local_gotno * 8; | |
4855 | ||
4856 | /* There has to be a global GOT entry for every symbol with | |
4857 | a dynamic symbol table index of DT_MIPS_GOTSYM or | |
4858 | higher. Therefore, it make sense to put those symbols | |
4859 | that need GOT entries at the end of the symbol table. We | |
4860 | do that here. */ | |
4861 | if (!mips_elf64_sort_hash_table (info, 1)) | |
4862 | return false; | |
4863 | ||
4864 | if (g->global_gotsym != NULL) | |
4865 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; | |
4866 | else | |
4867 | /* If there are no global symbols, or none requiring | |
4868 | relocations, then GLOBAL_GOTSYM will be NULL. */ | |
4869 | i = 0; | |
4870 | g->global_gotno = i; | |
4871 | s->_raw_size += i * 8; | |
4872 | } | |
4873 | else if (strcmp (name, ".MIPS.stubs") == 0) | |
4874 | { | |
4875 | /* Irix rld assumes that the function stub isn't at the end | |
4876 | of .text section. So put a dummy. XXX */ | |
4877 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
4878 | } | |
4879 | else if (strcmp (name, ".msym") | |
4880 | == 0) | |
4881 | s->_raw_size = (sizeof (Elf32_External_Msym) | |
4882 | * (elf_hash_table (info)->dynsymcount | |
4883 | + bfd_count_sections (output_bfd))); | |
4884 | else if (strncmp (name, ".init", 5) != 0) | |
4885 | { | |
4886 | /* It's not one of our sections, so don't allocate space. */ | |
4887 | continue; | |
4888 | } | |
4889 | ||
4890 | if (strip) | |
4891 | { | |
4892 | _bfd_strip_section_from_output (info, s); | |
4893 | continue; | |
4894 | } | |
4895 | ||
4896 | /* Allocate memory for the section contents. */ | |
4897 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
4898 | if (s->contents == NULL && s->_raw_size != 0) | |
4899 | { | |
4900 | bfd_set_error (bfd_error_no_memory); | |
4901 | return false; | |
4902 | } | |
4903 | } | |
4904 | ||
4905 | if (elf_hash_table (info)->dynamic_sections_created) | |
4906 | { | |
4907 | /* Add some entries to the .dynamic section. We fill in the | |
4908 | values later, in elf_mips_finish_dynamic_sections, but we | |
4909 | must add the entries now so that we get the correct size for | |
4910 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4911 | dynamic linker and used by the debugger. */ | |
4912 | if (! info->shared) | |
4913 | { | |
4914 | /* SGI object has the equivalence of DT_DEBUG in the | |
4915 | DT_MIPS_RLD_MAP entry. */ | |
4916 | if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) | |
4917 | return false; | |
4918 | if (!SGI_COMPAT (output_bfd)) | |
4919 | { | |
4920 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
4921 | return false; | |
4922 | } | |
4923 | } | |
4924 | else | |
4925 | { | |
4926 | /* Shared libraries on traditional mips have DT_DEBUG. */ | |
4927 | if (!SGI_COMPAT (output_bfd)) | |
4928 | { | |
4929 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
4930 | return false; | |
4931 | } | |
4932 | } | |
4933 | ||
4934 | if (reltext && SGI_COMPAT (output_bfd)) | |
4935 | info->flags |= DF_TEXTREL; | |
4936 | ||
4937 | if ((info->flags & DF_TEXTREL) != 0) | |
4938 | { | |
4939 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
4940 | return false; | |
4941 | } | |
4942 | ||
4943 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
4944 | return false; | |
4945 | ||
4946 | if (bfd_get_section_by_name (dynobj, "rel.dyn")) | |
4947 | { | |
4948 | if (! bfd_elf64_add_dynamic_entry (info, DT_REL, 0)) | |
4949 | return false; | |
4950 | ||
4951 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELSZ, 0)) | |
4952 | return false; | |
4953 | ||
4954 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELENT, 0)) | |
4955 | return false; | |
4956 | } | |
4957 | ||
4958 | if (SGI_COMPAT (output_bfd)) | |
4959 | { | |
4960 | if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) | |
4961 | return false; | |
4962 | } | |
4963 | ||
4964 | if (SGI_COMPAT (output_bfd)) | |
4965 | { | |
4966 | if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) | |
4967 | return false; | |
4968 | } | |
4969 | ||
4970 | if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) | |
4971 | { | |
4972 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) | |
4973 | return false; | |
4974 | ||
4975 | s = bfd_get_section_by_name (dynobj, ".liblist"); | |
4976 | BFD_ASSERT (s != NULL); | |
4977 | ||
4978 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) | |
4979 | return false; | |
4980 | } | |
4981 | ||
4982 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) | |
4983 | return false; | |
4984 | ||
4985 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) | |
4986 | return false; | |
4987 | ||
4988 | #if 0 | |
4989 | /* Time stamps in executable files are a bad idea. */ | |
4990 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) | |
4991 | return false; | |
4992 | #endif | |
4993 | ||
4994 | #if 0 /* FIXME */ | |
4995 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) | |
4996 | return false; | |
4997 | #endif | |
4998 | ||
4999 | #if 0 /* FIXME */ | |
5000 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) | |
5001 | return false; | |
5002 | #endif | |
5003 | ||
5004 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) | |
5005 | return false; | |
5006 | ||
5007 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) | |
5008 | return false; | |
5009 | ||
5010 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) | |
5011 | return false; | |
5012 | ||
5013 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) | |
5014 | return false; | |
5015 | ||
5016 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) | |
5017 | return false; | |
5018 | ||
5019 | if ((bfd_get_section_by_name(dynobj, ".MIPS.options")) | |
5020 | && !bfd_elf64_add_dynamic_entry (info, DT_MIPS_OPTIONS, 0)) | |
5021 | return false; | |
5022 | ||
5023 | if (bfd_get_section_by_name (dynobj, ".msym") | |
5024 | && !bfd_elf64_add_dynamic_entry (info, DT_MIPS_MSYM, 0)) | |
5025 | return false; | |
5026 | } | |
5027 | ||
5028 | return true; | |
5029 | } | |
5030 | ||
5031 | /* Finish up dynamic symbol handling. We set the contents of various | |
5032 | dynamic sections here. */ | |
5033 | ||
5034 | boolean | |
5035 | mips_elf64_finish_dynamic_symbol (output_bfd, info, h, sym) | |
5036 | bfd *output_bfd; | |
5037 | struct bfd_link_info *info; | |
5038 | struct elf_link_hash_entry *h; | |
5039 | Elf_Internal_Sym *sym; | |
5040 | { | |
5041 | bfd *dynobj; | |
5042 | bfd_vma gval; | |
5043 | asection *sgot; | |
5044 | asection *smsym; | |
5045 | struct mips_elf64_got_info *g; | |
5046 | const char *name; | |
5047 | struct mips_elf64_link_hash_entry *mh; | |
5048 | ||
5049 | dynobj = elf_hash_table (info)->dynobj; | |
5050 | gval = sym->st_value; | |
5051 | mh = (struct mips_elf64_link_hash_entry *) h; | |
5052 | ||
5053 | if (h->plt.offset != (bfd_vma) -1) | |
5054 | { | |
5055 | asection *s; | |
5056 | bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; | |
5057 | ||
5058 | /* This symbol has a stub. Set it up. */ | |
5059 | ||
5060 | BFD_ASSERT (h->dynindx != -1); | |
5061 | ||
5062 | s = bfd_get_section_by_name (dynobj, ".MIPS.stubs"); | |
5063 | BFD_ASSERT (s != NULL); | |
5064 | ||
5065 | /* FIXME: Can h->dynindex be more than 64K? */ | |
5066 | if (h->dynindx & 0xffff0000) | |
5067 | return false; | |
5068 | ||
5069 | /* Fill the stub. */ | |
5070 | bfd_put_32 (output_bfd, STUB_LW, stub); | |
5071 | bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); | |
5072 | bfd_put_32 (output_bfd, STUB_JALR, stub + 8); | |
5073 | bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, stub + 12); | |
5074 | ||
5075 | BFD_ASSERT (h->plt.offset <= s->_raw_size); | |
5076 | memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); | |
5077 | ||
5078 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
5079 | only for the referenced symbol. */ | |
5080 | sym->st_shndx = SHN_UNDEF; | |
5081 | ||
5082 | /* The run-time linker uses the st_value field of the symbol | |
5083 | to reset the global offset table entry for this external | |
5084 | to its stub address when unlinking a shared object. */ | |
5085 | gval = s->output_section->vma + s->output_offset + h->plt.offset; | |
5086 | sym->st_value = gval; | |
5087 | } | |
5088 | ||
5089 | BFD_ASSERT (h->dynindx != -1 | |
5090 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0); | |
5091 | ||
5092 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
5093 | BFD_ASSERT (sgot != NULL); | |
5094 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5095 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; | |
5096 | BFD_ASSERT (g != NULL); | |
5097 | ||
5098 | /* Run through the global symbol table, creating GOT entries for all | |
5099 | the symbols that need them. */ | |
5100 | if (g->global_gotsym != NULL | |
5101 | && h->dynindx >= g->global_gotsym->dynindx) | |
5102 | { | |
5103 | bfd_vma offset; | |
5104 | bfd_vma value; | |
5105 | ||
5106 | if (sym->st_value) | |
5107 | value = sym->st_value; | |
5108 | else | |
5109 | { | |
5110 | /* For an entity defined in a shared object, this will be | |
5111 | NULL. (For functions in shared objects for | |
5112 | which we have created stubs, ST_VALUE will be non-NULL. | |
5113 | That's because such the functions are now no longer defined | |
5114 | in a shared object.) */ | |
5115 | ||
5116 | if (info->shared && h->root.type == bfd_link_hash_undefined) | |
5117 | value = 0; | |
5118 | else | |
5119 | value = h->root.u.def.value; | |
5120 | } | |
5121 | offset = mips_elf64_global_got_index (dynobj, h); | |
5122 | bfd_put_64 (output_bfd, value, sgot->contents + offset); | |
5123 | } | |
5124 | ||
5125 | /* Create a .msym entry, if appropriate. */ | |
5126 | smsym = bfd_get_section_by_name (dynobj, ".msym"); | |
5127 | if (smsym) | |
5128 | { | |
5129 | Elf32_Internal_Msym msym; | |
5130 | ||
5131 | msym.ms_hash_value = bfd_elf_hash (h->root.root.string); | |
5132 | /* It is undocumented what the `1' indicates, but IRIX6 uses | |
5133 | this value. */ | |
5134 | msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1); | |
5135 | mips_elf64_swap_msym_out | |
5136 | (dynobj, &msym, | |
5137 | ((Elf32_External_Msym *) smsym->contents) + h->dynindx); | |
5138 | } | |
5139 | ||
5140 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
5141 | name = h->root.root.string; | |
5142 | if (strcmp (name, "_DYNAMIC") == 0 | |
5143 | || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) | |
5144 | sym->st_shndx = SHN_ABS; | |
5145 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
5146 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
5147 | { | |
5148 | sym->st_shndx = SHN_ABS; | |
5149 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5150 | sym->st_value = 1; | |
5151 | } | |
5152 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
5153 | { | |
5154 | if (h->type == STT_FUNC) | |
5155 | sym->st_shndx = SHN_MIPS_TEXT; | |
5156 | else if (h->type == STT_OBJECT) | |
5157 | sym->st_shndx = SHN_MIPS_DATA; | |
5158 | } | |
5159 | ||
5160 | /* Handle the IRIX6-specific symbols. */ | |
5161 | ||
5162 | { | |
5163 | /* The linker script takes care of providing names and values for | |
5164 | these, but we must place them into the right sections. */ | |
5165 | static const char* const text_section_symbols[] = { | |
5166 | "_ftext", | |
5167 | "_etext", | |
5168 | "__dso_displacement", | |
5169 | "__elf_header", | |
5170 | "__program_header_table", | |
5171 | NULL | |
5172 | }; | |
5173 | ||
5174 | static const char* const data_section_symbols[] = { | |
5175 | "_fdata", | |
5176 | "_edata", | |
5177 | "_end", | |
5178 | "_fbss", | |
5179 | NULL | |
5180 | }; | |
5181 | ||
5182 | const char* const *p; | |
5183 | int i; | |
5184 | ||
5185 | for (i = 0; i < 2; ++i) | |
5186 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
5187 | *p; | |
5188 | ++p) | |
5189 | if (strcmp (*p, name) == 0) | |
5190 | { | |
5191 | /* All of these symbols are given type STT_SECTION by the | |
5192 | IRIX6 linker. */ | |
5193 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5194 | ||
5195 | /* The IRIX linker puts these symbols in special sections. */ | |
5196 | if (i == 0) | |
5197 | sym->st_shndx = SHN_MIPS_TEXT; | |
5198 | else | |
5199 | sym->st_shndx = SHN_MIPS_DATA; | |
5200 | ||
5201 | break; | |
5202 | } | |
5203 | } | |
5204 | ||
5205 | return true; | |
5206 | } | |
5207 | ||
5208 | /* Finish up the dynamic sections. */ | |
5209 | ||
5210 | boolean | |
5211 | mips_elf64_finish_dynamic_sections (output_bfd, info) | |
5212 | bfd *output_bfd; | |
5213 | struct bfd_link_info *info; | |
5214 | { | |
5215 | bfd *dynobj; | |
5216 | asection *sdyn; | |
5217 | asection *sgot; | |
5218 | struct mips_elf64_got_info *g; | |
5219 | ||
5220 | dynobj = elf_hash_table (info)->dynobj; | |
5221 | ||
5222 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
5223 | ||
5224 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
5225 | if (sgot == NULL) | |
5226 | g = NULL; | |
5227 | else | |
5228 | { | |
5229 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5230 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; | |
5231 | BFD_ASSERT (g != NULL); | |
5232 | } | |
5233 | ||
5234 | if (elf_hash_table (info)->dynamic_sections_created) | |
5235 | { | |
5236 | bfd_byte *b; | |
5237 | ||
5238 | BFD_ASSERT (sdyn != NULL); | |
5239 | BFD_ASSERT (g != NULL); | |
5240 | ||
5241 | for (b = sdyn->contents; | |
5242 | b < sdyn->contents + sdyn->_raw_size; | |
5243 | b += get_elf_backend_data (dynobj)->s->sizeof_dyn) | |
5244 | { | |
5245 | Elf_Internal_Dyn dyn; | |
5246 | const char *name; | |
5247 | size_t elemsize; | |
5248 | asection *s; | |
5249 | boolean swap_out_p; | |
5250 | ||
5251 | /* Read in the current dynamic entry. */ | |
5252 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
5253 | ||
5254 | /* Assume that we're going to modify it and write it out. */ | |
5255 | swap_out_p = true; | |
5256 | ||
5257 | switch (dyn.d_tag) | |
5258 | { | |
5259 | case DT_RELENT: | |
5260 | s = bfd_get_section_by_name(dynobj, "rel.dyn"); | |
5261 | BFD_ASSERT (s != NULL); | |
5262 | dyn.d_un.d_val = get_elf_backend_data (dynobj)->s->sizeof_rel; | |
5263 | break; | |
5264 | ||
5265 | case DT_STRSZ: | |
5266 | /* Rewrite DT_STRSZ. */ | |
5267 | dyn.d_un.d_val = | |
5268 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
5269 | break; | |
5270 | ||
5271 | case DT_PLTGOT: | |
5272 | name = ".got"; | |
5273 | goto get_vma; | |
5274 | case DT_MIPS_CONFLICT: | |
5275 | name = ".conflict"; | |
5276 | goto get_vma; | |
5277 | case DT_MIPS_LIBLIST: | |
5278 | name = ".liblist"; | |
5279 | get_vma: | |
5280 | s = bfd_get_section_by_name (output_bfd, name); | |
5281 | BFD_ASSERT (s != NULL); | |
5282 | dyn.d_un.d_ptr = s->vma; | |
5283 | break; | |
5284 | ||
5285 | case DT_MIPS_RLD_VERSION: | |
5286 | dyn.d_un.d_val = 1; /* XXX */ | |
5287 | break; | |
5288 | ||
5289 | case DT_MIPS_FLAGS: | |
5290 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
5291 | break; | |
5292 | ||
5293 | case DT_MIPS_CONFLICTNO: | |
5294 | name = ".conflict"; | |
5295 | elemsize = sizeof (Elf32_Conflict); | |
5296 | goto set_elemno; | |
5297 | ||
5298 | case DT_MIPS_LIBLISTNO: | |
5299 | name = ".liblist"; | |
5300 | elemsize = sizeof (Elf32_Lib); | |
5301 | set_elemno: | |
5302 | s = bfd_get_section_by_name (output_bfd, name); | |
5303 | if (s != NULL) | |
5304 | { | |
5305 | if (s->_cooked_size != 0) | |
5306 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
5307 | else | |
5308 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
5309 | } | |
5310 | else | |
5311 | dyn.d_un.d_val = 0; | |
5312 | break; | |
5313 | ||
5314 | case DT_MIPS_TIME_STAMP: | |
5315 | time ((time_t *) &dyn.d_un.d_val); | |
5316 | break; | |
5317 | ||
5318 | case DT_MIPS_ICHECKSUM: | |
5319 | /* XXX FIXME: */ | |
5320 | swap_out_p = false; | |
5321 | break; | |
5322 | ||
5323 | case DT_MIPS_IVERSION: | |
5324 | /* XXX FIXME: */ | |
5325 | swap_out_p = false; | |
5326 | break; | |
5327 | ||
5328 | case DT_MIPS_BASE_ADDRESS: | |
5329 | s = output_bfd->sections; | |
5330 | BFD_ASSERT (s != NULL); | |
5331 | dyn.d_un.d_ptr = s->vma & ~(0xffff); | |
5332 | break; | |
5333 | ||
5334 | case DT_MIPS_LOCAL_GOTNO: | |
5335 | dyn.d_un.d_val = g->local_gotno; | |
5336 | break; | |
5337 | ||
5338 | case DT_MIPS_UNREFEXTNO: | |
5339 | /* The index into the dynamic symbol table which is the | |
5340 | entry of the first external symbol that is not | |
5341 | referenced within the same object. */ | |
5342 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
5343 | break; | |
5344 | ||
5345 | case DT_MIPS_GOTSYM: | |
5346 | if (g->global_gotsym) | |
5347 | { | |
5348 | dyn.d_un.d_val = g->global_gotsym->dynindx; | |
5349 | break; | |
5350 | } | |
5351 | /* In case if we don't have global got symbols we default | |
5352 | to setting DT_MIPS_GOTSYM to the same value as | |
5353 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
5354 | ||
5355 | case DT_MIPS_SYMTABNO: | |
5356 | name = ".dynsym"; | |
5357 | elemsize = get_elf_backend_data (output_bfd)->s->sizeof_sym; | |
5358 | s = bfd_get_section_by_name (output_bfd, name); | |
5359 | BFD_ASSERT (s != NULL); | |
5360 | ||
5361 | if (s->_cooked_size != 0) | |
5362 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
5363 | else | |
5364 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
5365 | break; | |
5366 | ||
5367 | case DT_MIPS_HIPAGENO: | |
5368 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; | |
5369 | break; | |
5370 | ||
5371 | case DT_MIPS_OPTIONS: | |
5372 | s = bfd_get_section_by_name(output_bfd, ".MIPS.options"); | |
5373 | dyn.d_un.d_ptr = s->vma; | |
5374 | break; | |
5375 | ||
5376 | case DT_MIPS_MSYM: | |
5377 | s = bfd_get_section_by_name(output_bfd, ".msym"); | |
5378 | dyn.d_un.d_ptr = s->vma; | |
5379 | break; | |
5380 | ||
5381 | default: | |
5382 | swap_out_p = false; | |
5383 | break; | |
5384 | } | |
5385 | ||
5386 | if (swap_out_p) | |
5387 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
5388 | (dynobj, &dyn, b); | |
5389 | } | |
5390 | } | |
5391 | ||
5392 | /* The first entry of the global offset table will be filled at | |
5393 | runtime. The second entry will be used by some runtime loaders. | |
5394 | This isn't the case of Irix rld. */ | |
5395 | if (sgot != NULL && sgot->_raw_size > 0) | |
5396 | { | |
5397 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5398 | bfd_put_64 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 8); | |
5399 | } | |
5400 | ||
5401 | if (sgot != NULL) | |
5402 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; | |
5403 | ||
5404 | { | |
5405 | asection *smsym; | |
5406 | asection *s; | |
5407 | ||
5408 | /* ??? The section symbols for the output sections were set up in | |
5409 | _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these | |
5410 | symbols. Should we do so? */ | |
5411 | ||
5412 | smsym = bfd_get_section_by_name (dynobj, ".msym"); | |
5413 | if (smsym != NULL) | |
5414 | { | |
5415 | Elf32_Internal_Msym msym; | |
5416 | ||
5417 | msym.ms_hash_value = 0; | |
5418 | msym.ms_info = ELF32_MS_INFO (0, 1); | |
5419 | ||
5420 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
5421 | { | |
5422 | long dynindx = elf_section_data (s)->dynindx; | |
5423 | ||
5424 | mips_elf64_swap_msym_out | |
5425 | (output_bfd, &msym, | |
5426 | (((Elf32_External_Msym *) smsym->contents) | |
5427 | + dynindx)); | |
5428 | } | |
5429 | } | |
5430 | ||
5431 | /* Clean up a first relocation in .rel.dyn. */ | |
5432 | s = bfd_get_section_by_name (dynobj, "rel.dyn"); | |
5433 | if (s != NULL && s->_raw_size > 0) | |
5434 | memset (s->contents, 0, get_elf_backend_data (dynobj)->s->sizeof_rel); | |
5435 | } | |
5436 | ||
5437 | return true; | |
5438 | } | |
5439 | ||
5440 | /* Return the section that should be marked against GC for a given | |
5441 | relocation. */ | |
5442 | ||
5443 | asection * | |
5444 | mips_elf64_gc_mark_hook (abfd, info, rel, h, sym) | |
5445 | bfd *abfd; | |
5446 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
5447 | Elf_Internal_Rela *rel; | |
5448 | struct elf_link_hash_entry *h; | |
5449 | Elf_Internal_Sym *sym; | |
5450 | { | |
5451 | if (h != NULL) | |
5452 | { | |
5453 | switch (ELF64_R_TYPE (rel->r_info)) | |
5454 | { | |
5455 | case R_MIPS_GNU_VTINHERIT: | |
5456 | case R_MIPS_GNU_VTENTRY: | |
5457 | break; | |
5458 | ||
5459 | default: | |
5460 | switch (h->root.type) | |
5461 | { | |
5462 | case bfd_link_hash_defined: | |
5463 | case bfd_link_hash_defweak: | |
5464 | return h->root.u.def.section; | |
5465 | ||
5466 | case bfd_link_hash_common: | |
5467 | return h->root.u.c.p->section; | |
5468 | ||
5469 | default: | |
5470 | break; | |
5471 | } | |
5472 | } | |
5473 | } | |
5474 | else | |
5475 | { | |
9ad5cbcf | 5476 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
5b6a02bc TS |
5477 | } |
5478 | ||
5479 | return NULL; | |
5480 | } | |
5481 | ||
5482 | /* Update the got entry reference counts for the section being removed. */ | |
5483 | ||
5484 | boolean | |
5485 | mips_elf64_gc_sweep_hook (abfd, info, sec, relocs) | |
5486 | bfd *abfd ATTRIBUTE_UNUSED; | |
5487 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
5488 | asection *sec ATTRIBUTE_UNUSED; | |
5489 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
5490 | { | |
5491 | #if 0 | |
5492 | Elf_Internal_Shdr *symtab_hdr; | |
5493 | struct elf_link_hash_entry **sym_hashes; | |
5494 | bfd_signed_vma *local_got_refcounts; | |
5495 | const Elf_Internal_Rela *rel, *relend; | |
5496 | unsigned long r_symndx; | |
5497 | struct elf_link_hash_entry *h; | |
5498 | ||
5499 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5500 | sym_hashes = elf_sym_hashes (abfd); | |
5501 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
5502 | ||
5503 | relend = relocs + sec->reloc_count; | |
5504 | for (rel = relocs; rel < relend; rel++) | |
5505 | switch (ELF64_R_TYPE (rel->r_info)) | |
5506 | { | |
5507 | case R_MIPS_GOT16: | |
5508 | case R_MIPS_CALL16: | |
5509 | case R_MIPS_CALL_HI16: | |
5510 | case R_MIPS_CALL_LO16: | |
5511 | case R_MIPS_GOT_HI16: | |
5512 | case R_MIPS_GOT_LO16: | |
5513 | /* ??? It would seem that the existing MIPS code does no sort | |
5514 | of reference counting or whatnot on its GOT and PLT entries, | |
5515 | so it is not possible to garbage collect them at this time. */ | |
5516 | break; | |
5517 | ||
5518 | default: | |
5519 | break; | |
5520 | } | |
5521 | #endif | |
5522 | ||
5523 | return true; | |
5524 | } | |
5525 | \f | |
5526 | /* Create the .got section to hold the global offset table. */ | |
5527 | ||
5528 | static boolean | |
5529 | mips_elf64_create_got_section (abfd, info) | |
5530 | bfd *abfd; | |
5531 | struct bfd_link_info *info; | |
5532 | { | |
5533 | flagword flags; | |
5534 | register asection *s; | |
5535 | struct elf_link_hash_entry *h; | |
5536 | struct mips_elf64_got_info *g; | |
5537 | ||
5538 | /* This function may be called more than once. */ | |
5539 | if (bfd_get_section_by_name (abfd, ".got")) | |
5540 | return true; | |
5541 | ||
5542 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5543 | | SEC_LINKER_CREATED); | |
5544 | ||
5545 | s = bfd_make_section (abfd, ".got"); | |
5546 | if (s == NULL | |
5547 | || ! bfd_set_section_flags (abfd, s, flags) | |
5548 | || ! bfd_set_section_alignment (abfd, s, 4)) | |
5549 | return false; | |
5550 | ||
5551 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
5552 | linker script because we don't want to define the symbol if we | |
5553 | are not creating a global offset table. */ | |
5554 | h = NULL; | |
5555 | if (! (_bfd_generic_link_add_one_symbol | |
5556 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
5557 | (bfd_vma) 0, (const char *) NULL, false, | |
5558 | get_elf_backend_data (abfd)->collect, | |
5559 | (struct bfd_link_hash_entry **) &h))) | |
5560 | return false; | |
5561 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
5562 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5563 | h->type = STT_OBJECT; | |
5564 | ||
5565 | if (info->shared | |
5566 | && ! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
5567 | return false; | |
5568 | ||
5569 | /* The first several global offset table entries are reserved. */ | |
5570 | s->_raw_size = MIPS_RESERVED_GOTNO * (get_elf_backend_data (abfd)->s->arch_size / 8); | |
5571 | ||
5572 | g = (struct mips_elf64_got_info *) bfd_alloc (abfd, | |
5573 | sizeof (struct mips_elf64_got_info)); | |
5574 | if (g == NULL) | |
5575 | return false; | |
5576 | g->global_gotsym = NULL; | |
5577 | g->local_gotno = MIPS_RESERVED_GOTNO; | |
5578 | g->assigned_gotno = MIPS_RESERVED_GOTNO; | |
5579 | if (elf_section_data (s) == NULL) | |
5580 | { | |
5581 | s->used_by_bfd = | |
5582 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
5583 | if (elf_section_data (s) == NULL) | |
5584 | return false; | |
5585 | } | |
5586 | elf_section_data (s)->tdata = (PTR) g; | |
5587 | elf_section_data (s)->this_hdr.sh_flags | |
5588 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
5589 | ||
5590 | return true; | |
5591 | } | |
5592 | ||
5593 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
5594 | symbol table index lower than any we've seen to date, record it for | |
5595 | posterity. */ | |
5596 | ||
5597 | static boolean | |
5598 | mips_elf64_record_global_got_symbol (h, info, g) | |
5599 | struct elf_link_hash_entry *h; | |
5600 | struct bfd_link_info *info; | |
5601 | struct mips_elf64_got_info *g ATTRIBUTE_UNUSED; | |
5602 | { | |
5603 | /* A global symbol in the GOT must also be in the dynamic symbol | |
5604 | table. */ | |
5605 | if (h->dynindx == -1 | |
5606 | && !bfd_elf64_link_record_dynamic_symbol (info, h)) | |
5607 | return false; | |
5608 | ||
a17aee54 | 5609 | /* If we've already marked this entry as needing GOT space, we don't |
5b6a02bc TS |
5610 | need to do it again. */ |
5611 | if (h->got.offset != (bfd_vma) - 1) | |
5612 | return true; | |
5613 | ||
5614 | /* By setting this to a value other than -1, we are indicating that | |
a17aee54 TS |
5615 | there needs to be a GOT entry for H. Avoid using zero, as the |
5616 | generic ELF copy_indirect_symbol tests for <= 0. */ | |
5617 | h->got.offset = 1; | |
5b6a02bc TS |
5618 | |
5619 | return true; | |
5620 | } | |
5621 | ||
5622 | /* Returns the .msym section for ABFD, creating it if it does not | |
5623 | already exist. Returns NULL to indicate error. */ | |
5624 | ||
5625 | static asection * | |
5626 | mips_elf64_create_msym_section (abfd) | |
5627 | bfd *abfd; | |
5628 | { | |
5629 | asection *s; | |
5630 | ||
5631 | s = bfd_get_section_by_name (abfd, ".msym"); | |
5632 | if (!s) | |
5633 | { | |
5634 | s = bfd_make_section (abfd, ".msym"); | |
5635 | if (!s | |
5636 | || !bfd_set_section_flags (abfd, s, | |
5637 | SEC_ALLOC | |
5638 | | SEC_LOAD | |
5639 | | SEC_HAS_CONTENTS | |
5640 | | SEC_LINKER_CREATED | |
5641 | | SEC_READONLY) | |
5642 | || !bfd_set_section_alignment (abfd, s, 3)) | |
5643 | return NULL; | |
5644 | } | |
5645 | ||
5646 | return s; | |
5647 | } | |
5648 | ||
5649 | /* Add room for N relocations to the .rel.dyn section in ABFD. */ | |
5650 | ||
5651 | static void | |
5652 | mips_elf64_allocate_dynamic_relocations (abfd, n) | |
5653 | bfd *abfd; | |
5654 | unsigned int n; | |
5655 | { | |
5656 | asection *s; | |
5657 | ||
5658 | s = bfd_get_section_by_name (abfd, ".rel.dyn"); | |
5659 | BFD_ASSERT (s != NULL); | |
5660 | ||
5661 | if (s->_raw_size == 0) | |
5662 | { | |
5663 | /* Make room for a null element. */ | |
5664 | s->_raw_size += get_elf_backend_data (abfd)->s->sizeof_rel; | |
5665 | ++s->reloc_count; | |
5666 | } | |
5667 | s->_raw_size += n * get_elf_backend_data (abfd)->s->sizeof_rel; | |
5668 | } | |
5669 | ||
5670 | /* Look through the relocs for a section during the first phase, and | |
5671 | allocate space in the global offset table. */ | |
5672 | ||
5673 | boolean | |
5674 | mips_elf64_check_relocs (abfd, info, sec, relocs) | |
5675 | bfd *abfd; | |
5676 | struct bfd_link_info *info; | |
5677 | asection *sec; | |
5678 | const Elf_Internal_Rela *relocs; | |
5679 | { | |
5680 | const char *name; | |
5681 | bfd *dynobj; | |
5682 | Elf_Internal_Shdr *symtab_hdr; | |
5683 | struct elf_link_hash_entry **sym_hashes; | |
5684 | struct mips_elf64_got_info *g; | |
5685 | size_t extsymoff; | |
5686 | const Elf_Internal_Rela *rel; | |
5687 | const Elf_Internal_Rela *rel_end; | |
5688 | asection *sgot; | |
5689 | asection *sreloc; | |
5690 | struct elf_backend_data *bed; | |
5691 | ||
5692 | if (info->relocateable) | |
5693 | return true; | |
5694 | ||
5695 | dynobj = elf_hash_table (info)->dynobj; | |
5696 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5697 | sym_hashes = elf_sym_hashes (abfd); | |
5698 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
5699 | ||
a17aee54 TS |
5700 | /* Check for the mips16 stub sections. */ |
5701 | ||
5b6a02bc | 5702 | name = bfd_get_section_name (abfd, sec); |
a17aee54 TS |
5703 | if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) |
5704 | { | |
5705 | unsigned long r_symndx; | |
5706 | ||
5707 | /* Look at the relocation information to figure out which symbol | |
5708 | this is for. */ | |
5709 | ||
5710 | r_symndx = ELF64_R_SYM (relocs->r_info); | |
5711 | ||
5712 | if (r_symndx < extsymoff | |
5713 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
5714 | { | |
5715 | asection *o; | |
5716 | ||
5717 | /* This stub is for a local symbol. This stub will only be | |
5718 | needed if there is some relocation in this BFD, other | |
5719 | than a 16 bit function call, which refers to this symbol. */ | |
5720 | for (o = abfd->sections; o != NULL; o = o->next) | |
5721 | { | |
5722 | Elf_Internal_Rela *sec_relocs; | |
5723 | const Elf_Internal_Rela *r, *rend; | |
5724 | ||
5725 | /* We can ignore stub sections when looking for relocs. */ | |
5726 | if ((o->flags & SEC_RELOC) == 0 | |
5727 | || o->reloc_count == 0 | |
5728 | || strncmp (bfd_get_section_name (abfd, o), FN_STUB, | |
5729 | sizeof FN_STUB - 1) == 0 | |
5730 | || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, | |
5731 | sizeof CALL_STUB - 1) == 0 | |
5732 | || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, | |
5733 | sizeof CALL_FP_STUB - 1) == 0) | |
5734 | continue; | |
5735 | ||
5736 | sec_relocs = (_bfd_elf64_link_read_relocs | |
5737 | (abfd, o, (PTR) NULL, | |
5738 | (Elf_Internal_Rela *) NULL, | |
5739 | info->keep_memory)); | |
5740 | if (sec_relocs == NULL) | |
5741 | return false; | |
5742 | ||
5743 | rend = sec_relocs + o->reloc_count; | |
5744 | for (r = sec_relocs; r < rend; r++) | |
5745 | if (ELF64_R_SYM (r->r_info) == r_symndx | |
5746 | && ELF64_R_TYPE (r->r_info) != R_MIPS16_26) | |
5747 | break; | |
5748 | ||
5749 | if (! info->keep_memory) | |
5750 | free (sec_relocs); | |
5751 | ||
5752 | if (r < rend) | |
5753 | break; | |
5754 | } | |
5755 | ||
5756 | if (o == NULL) | |
5757 | { | |
5758 | /* There is no non-call reloc for this stub, so we do | |
5759 | not need it. Since this function is called before | |
5760 | the linker maps input sections to output sections, we | |
5761 | can easily discard it by setting the SEC_EXCLUDE | |
5762 | flag. */ | |
5763 | sec->flags |= SEC_EXCLUDE; | |
5764 | return true; | |
5765 | } | |
5766 | ||
5767 | /* Record this stub in an array of local symbol stubs for | |
5768 | this BFD. */ | |
5769 | if (elf_tdata (abfd)->local_stubs == NULL) | |
5770 | { | |
5771 | unsigned long symcount; | |
5772 | asection **n; | |
5773 | bfd_size_type amt; | |
5774 | ||
5775 | if (elf_bad_symtab (abfd)) | |
5776 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
5777 | else | |
5778 | symcount = symtab_hdr->sh_info; | |
5779 | amt = symcount * sizeof (asection *); | |
5780 | n = (asection **) bfd_zalloc (abfd, amt); | |
5781 | if (n == NULL) | |
5782 | return false; | |
5783 | elf_tdata (abfd)->local_stubs = n; | |
5784 | } | |
5785 | ||
5786 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; | |
5787 | ||
5788 | /* We don't need to set mips16_stubs_seen in this case. | |
5789 | That flag is used to see whether we need to look through | |
5790 | the global symbol table for stubs. We don't need to set | |
5791 | it here, because we just have a local stub. */ | |
5792 | } | |
5793 | else | |
5794 | { | |
5795 | struct mips_elf64_link_hash_entry *h; | |
5796 | ||
5797 | h = ((struct mips_elf64_link_hash_entry *) | |
5798 | sym_hashes[r_symndx - extsymoff]); | |
5799 | ||
5800 | /* H is the symbol this stub is for. */ | |
5801 | ||
5802 | h->fn_stub = sec; | |
5803 | mips_elf64_hash_table (info)->mips16_stubs_seen = true; | |
5804 | } | |
5805 | } | |
5806 | else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
5807 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
5808 | { | |
5809 | unsigned long r_symndx; | |
5810 | struct mips_elf64_link_hash_entry *h; | |
5811 | asection **loc; | |
5812 | ||
5813 | /* Look at the relocation information to figure out which symbol | |
5814 | this is for. */ | |
5815 | ||
5816 | r_symndx = ELF64_R_SYM (relocs->r_info); | |
5817 | ||
5818 | if (r_symndx < extsymoff | |
5819 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
5820 | { | |
5821 | /* This stub was actually built for a static symbol defined | |
5822 | in the same file. We assume that all static symbols in | |
5823 | mips16 code are themselves mips16, so we can simply | |
5824 | discard this stub. Since this function is called before | |
5825 | the linker maps input sections to output sections, we can | |
5826 | easily discard it by setting the SEC_EXCLUDE flag. */ | |
5827 | sec->flags |= SEC_EXCLUDE; | |
5828 | return true; | |
5829 | } | |
5830 | ||
5831 | h = ((struct mips_elf64_link_hash_entry *) | |
5832 | sym_hashes[r_symndx - extsymoff]); | |
5833 | ||
5834 | /* H is the symbol this stub is for. */ | |
5835 | ||
5836 | if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
5837 | loc = &h->call_fp_stub; | |
5838 | else | |
5839 | loc = &h->call_stub; | |
5840 | ||
5841 | /* If we already have an appropriate stub for this function, we | |
5842 | don't need another one, so we can discard this one. Since | |
5843 | this function is called before the linker maps input sections | |
5844 | to output sections, we can easily discard it by setting the | |
5845 | SEC_EXCLUDE flag. We can also discard this section if we | |
5846 | happen to already know that this is a mips16 function; it is | |
5847 | not necessary to check this here, as it is checked later, but | |
5848 | it is slightly faster to check now. */ | |
5849 | if (*loc != NULL || h->root.other == STO_MIPS16) | |
5850 | { | |
5851 | sec->flags |= SEC_EXCLUDE; | |
5852 | return true; | |
5853 | } | |
5854 | ||
5855 | *loc = sec; | |
5856 | mips_elf64_hash_table (info)->mips16_stubs_seen = true; | |
5857 | } | |
5b6a02bc TS |
5858 | |
5859 | if (dynobj == NULL) | |
5860 | { | |
5861 | sgot = NULL; | |
5862 | g = NULL; | |
5863 | } | |
5864 | else | |
5865 | { | |
5866 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
5867 | if (sgot == NULL) | |
5868 | g = NULL; | |
5869 | else | |
5870 | { | |
5871 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5872 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; | |
5873 | BFD_ASSERT (g != NULL); | |
5874 | } | |
5875 | } | |
5876 | ||
5877 | sreloc = NULL; | |
5878 | bed = get_elf_backend_data (abfd); | |
5879 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
5880 | for (rel = relocs; rel < rel_end; ++rel) | |
5881 | { | |
5882 | unsigned long r_symndx; | |
5883 | int r_type; | |
5884 | struct elf_link_hash_entry *h; | |
5885 | ||
5886 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5887 | r_type = ELF64_MIPS_R_TYPE (rel->r_info); | |
5888 | ||
5889 | if (r_symndx < extsymoff) | |
5890 | h = NULL; | |
a17aee54 | 5891 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) |
5b6a02bc TS |
5892 | { |
5893 | (*_bfd_error_handler) | |
a17aee54 TS |
5894 | (_("%s: Malformed reloc detected for section %s"), |
5895 | bfd_archive_filename (abfd), name); | |
5b6a02bc TS |
5896 | bfd_set_error (bfd_error_bad_value); |
5897 | return false; | |
5898 | } | |
5899 | else | |
5900 | { | |
5901 | h = sym_hashes[r_symndx - extsymoff]; | |
5902 | ||
5903 | /* This may be an indirect symbol created because of a version. */ | |
5904 | if (h != NULL) | |
5905 | { | |
5906 | while (h->root.type == bfd_link_hash_indirect) | |
5907 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5908 | } | |
5909 | } | |
5910 | ||
5911 | /* Some relocs require a global offset table. */ | |
5912 | if (dynobj == NULL || sgot == NULL) | |
5913 | { | |
5914 | switch (r_type) | |
5915 | { | |
5916 | case R_MIPS_GOT16: | |
5917 | case R_MIPS_CALL16: | |
5918 | case R_MIPS_CALL_HI16: | |
5919 | case R_MIPS_CALL_LO16: | |
5920 | case R_MIPS_GOT_HI16: | |
5921 | case R_MIPS_GOT_LO16: | |
5922 | case R_MIPS_GOT_PAGE: | |
5923 | case R_MIPS_GOT_OFST: | |
5924 | case R_MIPS_GOT_DISP: | |
5925 | if (dynobj == NULL) | |
5926 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
5927 | if (! mips_elf64_create_got_section (dynobj, info)) | |
5928 | return false; | |
5929 | g = _mips_elf64_got_info (dynobj, &sgot); | |
5930 | break; | |
5931 | ||
5932 | case R_MIPS_32: | |
5933 | case R_MIPS_REL32: | |
5934 | case R_MIPS_64: | |
5935 | if (dynobj == NULL | |
5936 | && (info->shared || h != NULL) | |
5937 | && (sec->flags & SEC_ALLOC) != 0) | |
5938 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
5939 | break; | |
5940 | ||
5941 | default: | |
5942 | break; | |
5943 | } | |
5944 | } | |
5945 | ||
5946 | if (!h && (r_type == R_MIPS_CALL_LO16 | |
5947 | || r_type == R_MIPS_GOT_LO16 | |
5948 | || r_type == R_MIPS_GOT_DISP)) | |
5949 | { | |
5950 | /* We may need a local GOT entry for this relocation. We | |
5951 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
5952 | maximum number of pages needed by looking at the size of | |
a17aee54 TS |
5953 | the segment. Similar comments apply to R_MIPS_GOT16 and |
5954 | R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or | |
5955 | R_MIPS_CALL_HI16 because these are always followed by an | |
5956 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. | |
5b6a02bc TS |
5957 | |
5958 | This estimation is very conservative since we can merge | |
5959 | duplicate entries in the GOT. In order to be less | |
5960 | conservative, we could actually build the GOT here, | |
5961 | rather than in relocate_section. */ | |
5962 | g->local_gotno++; | |
5963 | sgot->_raw_size += get_elf_backend_data (dynobj)->s->arch_size / 8; | |
5964 | } | |
5965 | ||
5966 | switch (r_type) | |
5967 | { | |
5968 | case R_MIPS_CALL16: | |
5969 | if (h == NULL) | |
5970 | { | |
5971 | (*_bfd_error_handler) | |
5972 | (_("%s: CALL16 reloc at 0x%lx not against global symbol"), | |
a17aee54 | 5973 | bfd_archive_filename (abfd), (unsigned long) rel->r_offset); |
5b6a02bc TS |
5974 | bfd_set_error (bfd_error_bad_value); |
5975 | return false; | |
5976 | } | |
5977 | /* Fall through. */ | |
5978 | ||
5979 | case R_MIPS_CALL_HI16: | |
5980 | case R_MIPS_CALL_LO16: | |
5981 | if (h != NULL) | |
5982 | { | |
5983 | /* This symbol requires a global offset table entry. */ | |
5984 | if (!mips_elf64_record_global_got_symbol (h, info, g)) | |
5985 | return false; | |
5986 | ||
5987 | /* We need a stub, not a plt entry for the undefined | |
5988 | function. But we record it as if it needs plt. See | |
5989 | elf_adjust_dynamic_symbol in elflink.h. */ | |
5990 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
5991 | h->type = STT_FUNC; | |
5992 | } | |
5993 | break; | |
5994 | ||
5995 | case R_MIPS_GOT16: | |
5996 | case R_MIPS_GOT_HI16: | |
5997 | case R_MIPS_GOT_LO16: | |
5998 | case R_MIPS_GOT_DISP: | |
5999 | /* This symbol requires a global offset table entry. */ | |
6000 | if (h && !mips_elf64_record_global_got_symbol (h, info, g)) | |
6001 | return false; | |
6002 | break; | |
6003 | ||
6004 | case R_MIPS_32: | |
6005 | case R_MIPS_REL32: | |
6006 | case R_MIPS_64: | |
6007 | if ((info->shared || h != NULL) | |
6008 | && (sec->flags & SEC_ALLOC) != 0) | |
6009 | { | |
6010 | if (sreloc == NULL) | |
6011 | { | |
6012 | const char *name = ".rel.dyn"; | |
6013 | ||
6014 | sreloc = bfd_get_section_by_name (dynobj, name); | |
6015 | if (sreloc == NULL) | |
6016 | { | |
6017 | sreloc = bfd_make_section (dynobj, name); | |
6018 | if (sreloc == NULL | |
6019 | || ! bfd_set_section_flags (dynobj, sreloc, | |
6020 | (SEC_ALLOC | |
6021 | | SEC_LOAD | |
6022 | | SEC_HAS_CONTENTS | |
6023 | | SEC_IN_MEMORY | |
6024 | | SEC_LINKER_CREATED | |
6025 | | SEC_READONLY)) | |
6026 | || ! bfd_set_section_alignment (dynobj, sreloc, | |
6027 | 4)) | |
6028 | return false; | |
6029 | } | |
6030 | } | |
6031 | #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) | |
6032 | if (info->shared) | |
6033 | { | |
6034 | /* When creating a shared object, we must copy these | |
6035 | reloc types into the output file as R_MIPS_REL32 | |
6036 | relocs. We make room for this reloc in the | |
6037 | .rel.dyn reloc section. */ | |
6038 | mips_elf64_allocate_dynamic_relocations (dynobj, 1); | |
6039 | if ((sec->flags & MIPS_READONLY_SECTION) | |
6040 | == MIPS_READONLY_SECTION) | |
6041 | /* We tell the dynamic linker that there are | |
6042 | relocations against the text segment. */ | |
6043 | info->flags |= DF_TEXTREL; | |
6044 | } | |
6045 | else | |
6046 | { | |
6047 | struct mips_elf64_link_hash_entry *hmips; | |
6048 | ||
6049 | /* We only need to copy this reloc if the symbol is | |
6050 | defined in a dynamic object. */ | |
6051 | hmips = (struct mips_elf64_link_hash_entry *) h; | |
6052 | ++hmips->possibly_dynamic_relocs; | |
6053 | if ((sec->flags & MIPS_READONLY_SECTION) | |
6054 | == MIPS_READONLY_SECTION) | |
6055 | /* We need it to tell the dynamic linker if there | |
6056 | are relocations against the text segment. */ | |
6057 | hmips->readonly_reloc = true; | |
6058 | } | |
6059 | ||
6060 | /* Even though we don't directly need a GOT entry for | |
6061 | this symbol, a symbol must have a dynamic symbol | |
6062 | table index greater that DT_MIPS_GOTSYM if there are | |
6063 | dynamic relocations against it. */ | |
6064 | if (h != NULL | |
6065 | && !mips_elf64_record_global_got_symbol (h, info, g)) | |
6066 | return false; | |
6067 | } | |
6068 | break; | |
6069 | ||
6070 | case R_MIPS_26: | |
6071 | case R_MIPS_GPREL16: | |
6072 | case R_MIPS_LITERAL: | |
6073 | case R_MIPS_GPREL32: | |
6074 | break; | |
6075 | ||
6076 | /* This relocation describes the C++ object vtable hierarchy. | |
6077 | Reconstruct it for later use during GC. */ | |
6078 | case R_MIPS_GNU_VTINHERIT: | |
6079 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
6080 | return false; | |
6081 | break; | |
6082 | ||
6083 | /* This relocation describes which C++ vtable entries are actually | |
6084 | used. Record for later use during GC. */ | |
6085 | case R_MIPS_GNU_VTENTRY: | |
6086 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
6087 | return false; | |
6088 | break; | |
6089 | ||
6090 | default: | |
6091 | break; | |
6092 | } | |
6093 | } | |
6094 | ||
6095 | return true; | |
6096 | } | |
6097 | ||
6098 | /* Structure used to pass information to mips_elf64_output_extsym. */ | |
6099 | ||
6100 | struct extsym_info | |
6101 | { | |
6102 | bfd *abfd; | |
6103 | struct bfd_link_info *info; | |
6104 | struct ecoff_debug_info *debug; | |
6105 | const struct ecoff_debug_swap *swap; | |
6106 | boolean failed; | |
6107 | }; | |
6108 | ||
6109 | /* This routine is used to write out ECOFF debugging external symbol | |
6110 | information. It is called via mips_elf64_link_hash_traverse. The | |
6111 | ECOFF external symbol information must match the ELF external | |
6112 | symbol information. Unfortunately, at this point we don't know | |
6113 | whether a symbol is required by reloc information, so the two | |
6114 | tables may wind up being different. We must sort out the external | |
6115 | symbol information before we can set the final size of the .mdebug | |
6116 | section, and we must set the size of the .mdebug section before we | |
6117 | can relocate any sections, and we can't know which symbols are | |
6118 | required by relocation until we relocate the sections. | |
6119 | Fortunately, it is relatively unlikely that any symbol will be | |
6120 | stripped but required by a reloc. In particular, it can not happen | |
6121 | when generating a final executable. */ | |
6122 | ||
6123 | static boolean | |
6124 | mips_elf64_output_extsym (h, data) | |
6125 | struct mips_elf64_link_hash_entry *h; | |
6126 | PTR data; | |
6127 | { | |
6128 | struct extsym_info *einfo = (struct extsym_info *) data; | |
6129 | boolean strip; | |
6130 | asection *sec, *output_section; | |
6131 | ||
6132 | if (h->root.indx == -2) | |
6133 | strip = false; | |
6134 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
6135 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
6136 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
6137 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
6138 | strip = true; | |
6139 | else if (einfo->info->strip == strip_all | |
6140 | || (einfo->info->strip == strip_some | |
6141 | && bfd_hash_lookup (einfo->info->keep_hash, | |
6142 | h->root.root.root.string, | |
6143 | false, false) == NULL)) | |
6144 | strip = true; | |
6145 | else | |
6146 | strip = false; | |
6147 | ||
6148 | if (strip) | |
6149 | return true; | |
6150 | ||
6151 | if (h->esym.ifd == -2) | |
6152 | { | |
6153 | h->esym.jmptbl = 0; | |
6154 | h->esym.cobol_main = 0; | |
6155 | h->esym.weakext = 0; | |
6156 | h->esym.reserved = 0; | |
6157 | h->esym.ifd = ifdNil; | |
6158 | h->esym.asym.value = 0; | |
6159 | h->esym.asym.st = stGlobal; | |
6160 | ||
6161 | if (h->root.root.type == bfd_link_hash_undefined | |
6162 | || h->root.root.type == bfd_link_hash_undefweak) | |
6163 | { | |
6164 | const char *name; | |
6165 | ||
6166 | /* Use undefined class. Also, set class and type for some | |
6167 | special symbols. */ | |
6168 | name = h->root.root.root.string; | |
6169 | h->esym.asym.sc = scUndefined; | |
6170 | } | |
6171 | else if (h->root.root.type != bfd_link_hash_defined | |
6172 | && h->root.root.type != bfd_link_hash_defweak) | |
6173 | h->esym.asym.sc = scAbs; | |
6174 | else | |
6175 | { | |
6176 | const char *name; | |
6177 | ||
6178 | sec = h->root.root.u.def.section; | |
6179 | output_section = sec->output_section; | |
6180 | ||
6181 | /* When making a shared library and symbol h is the one from | |
6182 | the another shared library, OUTPUT_SECTION may be null. */ | |
6183 | if (output_section == NULL) | |
6184 | h->esym.asym.sc = scUndefined; | |
6185 | else | |
6186 | { | |
6187 | name = bfd_section_name (output_section->owner, output_section); | |
6188 | ||
6189 | if (strcmp (name, ".text") == 0) | |
6190 | h->esym.asym.sc = scText; | |
6191 | else if (strcmp (name, ".data") == 0) | |
6192 | h->esym.asym.sc = scData; | |
6193 | else if (strcmp (name, ".sdata") == 0) | |
6194 | h->esym.asym.sc = scSData; | |
6195 | else if (strcmp (name, ".rodata") == 0 | |
6196 | || strcmp (name, ".rdata") == 0) | |
6197 | h->esym.asym.sc = scRData; | |
6198 | else if (strcmp (name, ".bss") == 0) | |
6199 | h->esym.asym.sc = scBss; | |
6200 | else if (strcmp (name, ".sbss") == 0) | |
6201 | h->esym.asym.sc = scSBss; | |
6202 | else if (strcmp (name, ".init") == 0) | |
6203 | h->esym.asym.sc = scInit; | |
6204 | else if (strcmp (name, ".fini") == 0) | |
6205 | h->esym.asym.sc = scFini; | |
6206 | else | |
6207 | h->esym.asym.sc = scAbs; | |
6208 | } | |
6209 | } | |
6210 | ||
6211 | h->esym.asym.reserved = 0; | |
6212 | h->esym.asym.index = indexNil; | |
6213 | } | |
6214 | ||
6215 | if (h->root.root.type == bfd_link_hash_common) | |
6216 | h->esym.asym.value = h->root.root.u.c.size; | |
6217 | else if (h->root.root.type == bfd_link_hash_defined | |
6218 | || h->root.root.type == bfd_link_hash_defweak) | |
6219 | { | |
6220 | if (h->esym.asym.sc == scCommon) | |
6221 | h->esym.asym.sc = scBss; | |
6222 | else if (h->esym.asym.sc == scSCommon) | |
6223 | h->esym.asym.sc = scSBss; | |
6224 | ||
6225 | sec = h->root.root.u.def.section; | |
6226 | output_section = sec->output_section; | |
6227 | if (output_section != NULL) | |
6228 | h->esym.asym.value = (h->root.root.u.def.value | |
6229 | + sec->output_offset | |
6230 | + output_section->vma); | |
6231 | else | |
6232 | h->esym.asym.value = 0; | |
6233 | } | |
6234 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
6235 | { | |
a17aee54 TS |
6236 | struct mips_elf64_link_hash_entry *hd = h; |
6237 | boolean no_fn_stub = h->no_fn_stub; | |
6238 | ||
6239 | while (hd->root.root.type == bfd_link_hash_indirect) | |
5b6a02bc | 6240 | { |
a17aee54 TS |
6241 | hd = (struct mips_elf64_link_hash_entry *)h->root.root.u.i.link; |
6242 | no_fn_stub = no_fn_stub || hd->no_fn_stub; | |
5b6a02bc | 6243 | } |
a17aee54 TS |
6244 | |
6245 | if (!no_fn_stub) | |
6246 | { | |
6247 | /* Set type and value for a symbol with a function stub. */ | |
6248 | h->esym.asym.st = stProc; | |
6249 | sec = hd->root.root.u.def.section; | |
6250 | if (sec == NULL) | |
6251 | h->esym.asym.value = 0; | |
6252 | else | |
6253 | { | |
6254 | output_section = sec->output_section; | |
6255 | if (output_section != NULL) | |
6256 | h->esym.asym.value = (hd->root.plt.offset | |
6257 | + sec->output_offset | |
6258 | + output_section->vma); | |
6259 | else | |
6260 | h->esym.asym.value = 0; | |
6261 | } | |
5b6a02bc | 6262 | #if 0 /* FIXME? */ |
a17aee54 | 6263 | h->esym.ifd = 0; |
5b6a02bc | 6264 | #endif |
a17aee54 | 6265 | } |
5b6a02bc TS |
6266 | } |
6267 | ||
6268 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
6269 | h->root.root.root.string, | |
6270 | &h->esym)) | |
6271 | { | |
6272 | einfo->failed = true; | |
6273 | return false; | |
6274 | } | |
6275 | ||
6276 | return true; | |
6277 | } | |
6278 | ||
6279 | /* Swap an entry in a .gptab section. Note that these routines rely | |
6280 | on the equivalence of the two elements of the union. */ | |
6281 | ||
6282 | static void | |
6283 | mips_elf64_swap_gptab_in (abfd, ex, in) | |
6284 | bfd *abfd; | |
6285 | const Elf32_External_gptab *ex; | |
6286 | Elf32_gptab *in; | |
6287 | { | |
a17aee54 TS |
6288 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); |
6289 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
5b6a02bc TS |
6290 | } |
6291 | ||
6292 | static void | |
6293 | mips_elf64_swap_gptab_out (abfd, in, ex) | |
6294 | bfd *abfd; | |
6295 | const Elf32_gptab *in; | |
6296 | Elf32_External_gptab *ex; | |
6297 | { | |
a17aee54 | 6298 | H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, |
5b6a02bc | 6299 | ex->gt_entry.gt_g_value); |
a17aee54 | 6300 | H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, |
5b6a02bc TS |
6301 | ex->gt_entry.gt_bytes); |
6302 | } | |
6303 | ||
6304 | /* A comparison routine used to sort .gptab entries. */ | |
6305 | ||
6306 | static int | |
6307 | gptab_compare (p1, p2) | |
6308 | const PTR p1; | |
6309 | const PTR p2; | |
6310 | { | |
6311 | const Elf32_gptab *a1 = (const Elf32_gptab *) p1; | |
6312 | const Elf32_gptab *a2 = (const Elf32_gptab *) p2; | |
6313 | ||
6314 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
6315 | } | |
6316 | ||
6317 | /* We need to use a special link routine to handle the .mdebug section. | |
6318 | We need to merge all instances of this section together, not write | |
6319 | them all out sequentially. */ | |
6320 | ||
6321 | boolean | |
6322 | mips_elf64_final_link (abfd, info) | |
6323 | bfd *abfd; | |
6324 | struct bfd_link_info *info; | |
6325 | { | |
6326 | asection **secpp; | |
6327 | asection *o; | |
6328 | struct bfd_link_order *p; | |
6329 | asection *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
6330 | struct ecoff_debug_info debug; | |
6331 | const struct ecoff_debug_swap *swap | |
6332 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
6333 | HDRR *symhdr = &debug.symbolic_header; | |
6334 | PTR mdebug_handle = NULL; | |
6335 | asection *s; | |
6336 | EXTR esym; | |
5b6a02bc | 6337 | unsigned int i; |
a17aee54 | 6338 | static const char * const secname[] = |
5b6a02bc TS |
6339 | { ".text", ".init", ".fini", ".data", |
6340 | ".rodata", ".sdata", ".sbss", ".bss" }; | |
6341 | static const int sc[] = { scText, scInit, scFini, scData, | |
6342 | scRData, scSData, scSBss, scBss }; | |
6343 | ||
6344 | /* If all the things we linked together were PIC, but we're | |
6345 | producing an executable (rather than a shared object), then the | |
6346 | resulting file is CPIC (i.e., it calls PIC code.) */ | |
6347 | if (!info->shared | |
6348 | && !info->relocateable | |
6349 | && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
6350 | { | |
6351 | elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC; | |
6352 | elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC; | |
6353 | } | |
6354 | ||
6355 | /* We'd carefully arranged the dynamic symbol indices, and then the | |
6356 | generic size_dynamic_sections renumbered them out from under us. | |
6357 | Rather than trying somehow to prevent the renumbering, just do | |
6358 | the sort again. */ | |
6359 | if (elf_hash_table (info)->dynamic_sections_created) | |
6360 | { | |
6361 | bfd *dynobj; | |
6362 | asection *got; | |
6363 | struct mips_elf64_got_info *g; | |
6364 | ||
6365 | /* When we resort, we must tell mips_elf64_sort_hash_table what | |
6366 | the lowest index it may use is. That's the number of section | |
6367 | symbols we're going to add. The generic ELF linker only | |
6368 | adds these symbols when building a shared object. Note that | |
6369 | we count the sections after (possibly) removing the .options | |
6370 | section above. */ | |
6371 | if (!mips_elf64_sort_hash_table (info, (info->shared | |
6372 | ? bfd_count_sections (abfd) + 1 | |
6373 | : 1))) | |
6374 | return false; | |
6375 | ||
6376 | /* Make sure we didn't grow the global .got region. */ | |
6377 | dynobj = elf_hash_table (info)->dynobj; | |
6378 | got = bfd_get_section_by_name (dynobj, ".got"); | |
6379 | g = (struct mips_elf64_got_info *) elf_section_data (got)->tdata; | |
6380 | ||
6381 | if (g->global_gotsym != NULL) | |
6382 | BFD_ASSERT ((elf_hash_table (info)->dynsymcount | |
6383 | - g->global_gotsym->dynindx) | |
6384 | <= g->global_gotno); | |
6385 | } | |
6386 | ||
6387 | /* We include .MIPS.options, even though we don't process it quite right. | |
6388 | (Some entries are supposed to be merged.) At IRIX6 empirically we seem | |
6389 | to be better off including it than not. */ | |
6390 | for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) | |
6391 | { | |
6392 | if (strcmp ((*secpp)->name, ".MIPS.options") == 0) | |
6393 | { | |
6394 | for (p = (*secpp)->link_order_head; p != NULL; p = p->next) | |
6395 | if (p->type == bfd_indirect_link_order) | |
6396 | p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; | |
6397 | (*secpp)->link_order_head = NULL; | |
9e7b37b3 | 6398 | bfd_section_list_remove (abfd, secpp); |
5b6a02bc TS |
6399 | --abfd->section_count; |
6400 | ||
6401 | break; | |
6402 | } | |
6403 | } | |
6404 | ||
6405 | /* Get a value for the GP register. */ | |
6406 | if (elf_gp (abfd) == 0) | |
6407 | { | |
6408 | struct bfd_link_hash_entry *h; | |
6409 | ||
6410 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
6411 | if (h != (struct bfd_link_hash_entry *) NULL | |
6412 | && h->type == bfd_link_hash_defined) | |
6413 | elf_gp (abfd) = (h->u.def.value | |
6414 | + h->u.def.section->output_section->vma | |
6415 | + h->u.def.section->output_offset); | |
6416 | else if (info->relocateable) | |
6417 | { | |
6418 | bfd_vma lo = MINUS_ONE; | |
6419 | ||
6420 | /* Find the GP-relative section with the lowest offset. */ | |
6421 | for (o = abfd->sections; o != NULL; o = o->next) | |
6422 | if (o->vma < lo | |
6423 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
6424 | lo = o->vma; | |
6425 | ||
6426 | /* And calculate GP relative to that. */ | |
6427 | elf_gp (abfd) = (lo + 0x7ff0); | |
6428 | } | |
6429 | else | |
6430 | { | |
6431 | /* If the relocate_section function needs to do a reloc | |
6432 | involving the GP value, it should make a reloc_dangerous | |
6433 | callback to warn that GP is not defined. */ | |
6434 | } | |
6435 | } | |
6436 | ||
6437 | /* Go through the sections and collect the .mdebug information. */ | |
6438 | mdebug_sec = NULL; | |
6439 | gptab_data_sec = NULL; | |
6440 | gptab_bss_sec = NULL; | |
6441 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
6442 | { | |
6443 | if (strcmp (o->name, ".mdebug") == 0) | |
6444 | { | |
6445 | struct extsym_info einfo; | |
a17aee54 | 6446 | bfd_vma last; |
5b6a02bc TS |
6447 | |
6448 | /* We have found the .mdebug section in the output file. | |
6449 | Look through all the link_orders comprising it and merge | |
6450 | the information together. */ | |
6451 | symhdr->magic = swap->sym_magic; | |
6452 | /* FIXME: What should the version stamp be? */ | |
6453 | symhdr->vstamp = 0; | |
6454 | symhdr->ilineMax = 0; | |
6455 | symhdr->cbLine = 0; | |
6456 | symhdr->idnMax = 0; | |
6457 | symhdr->ipdMax = 0; | |
6458 | symhdr->isymMax = 0; | |
6459 | symhdr->ioptMax = 0; | |
6460 | symhdr->iauxMax = 0; | |
6461 | symhdr->issMax = 0; | |
6462 | symhdr->issExtMax = 0; | |
6463 | symhdr->ifdMax = 0; | |
6464 | symhdr->crfd = 0; | |
6465 | symhdr->iextMax = 0; | |
6466 | ||
6467 | /* We accumulate the debugging information itself in the | |
6468 | debug_info structure. */ | |
6469 | debug.line = NULL; | |
6470 | debug.external_dnr = NULL; | |
6471 | debug.external_pdr = NULL; | |
6472 | debug.external_sym = NULL; | |
6473 | debug.external_opt = NULL; | |
6474 | debug.external_aux = NULL; | |
6475 | debug.ss = NULL; | |
6476 | debug.ssext = debug.ssext_end = NULL; | |
6477 | debug.external_fdr = NULL; | |
6478 | debug.external_rfd = NULL; | |
6479 | debug.external_ext = debug.external_ext_end = NULL; | |
6480 | ||
6481 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
6482 | if (mdebug_handle == (PTR) NULL) | |
6483 | return false; | |
6484 | ||
6485 | esym.jmptbl = 0; | |
6486 | esym.cobol_main = 0; | |
6487 | esym.weakext = 0; | |
6488 | esym.reserved = 0; | |
6489 | esym.ifd = ifdNil; | |
6490 | esym.asym.iss = issNil; | |
6491 | esym.asym.st = stLocal; | |
6492 | esym.asym.reserved = 0; | |
6493 | esym.asym.index = indexNil; | |
6494 | last = 0; | |
a17aee54 | 6495 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) |
5b6a02bc TS |
6496 | { |
6497 | esym.asym.sc = sc[i]; | |
a17aee54 | 6498 | s = bfd_get_section_by_name (abfd, secname[i]); |
5b6a02bc TS |
6499 | if (s != NULL) |
6500 | { | |
6501 | esym.asym.value = s->vma; | |
6502 | last = s->vma + s->_raw_size; | |
6503 | } | |
6504 | else | |
6505 | esym.asym.value = last; | |
6506 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
a17aee54 | 6507 | secname[i], &esym)) |
5b6a02bc TS |
6508 | return false; |
6509 | } | |
6510 | ||
6511 | for (p = o->link_order_head; | |
6512 | p != (struct bfd_link_order *) NULL; | |
6513 | p = p->next) | |
6514 | { | |
6515 | asection *input_section; | |
6516 | bfd *input_bfd; | |
6517 | const struct ecoff_debug_swap *input_swap; | |
6518 | struct ecoff_debug_info input_debug; | |
6519 | char *eraw_src; | |
6520 | char *eraw_end; | |
6521 | ||
6522 | if (p->type != bfd_indirect_link_order) | |
6523 | { | |
fd96f80f | 6524 | if (p->type == bfd_data_link_order) |
5b6a02bc TS |
6525 | continue; |
6526 | abort (); | |
6527 | } | |
6528 | ||
6529 | input_section = p->u.indirect.section; | |
6530 | input_bfd = input_section->owner; | |
6531 | ||
6532 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
6533 | || (get_elf_backend_data (input_bfd) | |
6534 | ->elf_backend_ecoff_debug_swap) == NULL) | |
6535 | { | |
6536 | /* I don't know what a non MIPS ELF bfd would be | |
6537 | doing with a .mdebug section, but I don't really | |
6538 | want to deal with it. */ | |
6539 | continue; | |
6540 | } | |
6541 | ||
6542 | input_swap = (get_elf_backend_data (input_bfd) | |
6543 | ->elf_backend_ecoff_debug_swap); | |
6544 | ||
6545 | BFD_ASSERT (p->size == input_section->_raw_size); | |
6546 | ||
6547 | /* The ECOFF linking code expects that we have already | |
6548 | read in the debugging information and set up an | |
6549 | ecoff_debug_info structure, so we do that now. */ | |
6550 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
6551 | &input_debug)) | |
6552 | return false; | |
6553 | ||
6554 | if (! (bfd_ecoff_debug_accumulate | |
6555 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
6556 | &input_debug, input_swap, info))) | |
6557 | return false; | |
6558 | ||
6559 | /* Loop through the external symbols. For each one with | |
6560 | interesting information, try to find the symbol in | |
6561 | the linker global hash table and save the information | |
6562 | for the output external symbols. */ | |
6563 | eraw_src = input_debug.external_ext; | |
6564 | eraw_end = (eraw_src | |
6565 | + (input_debug.symbolic_header.iextMax | |
6566 | * input_swap->external_ext_size)); | |
6567 | for (; | |
6568 | eraw_src < eraw_end; | |
6569 | eraw_src += input_swap->external_ext_size) | |
6570 | { | |
6571 | EXTR ext; | |
6572 | const char *name; | |
6573 | struct mips_elf64_link_hash_entry *h; | |
6574 | ||
6575 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
6576 | if (ext.asym.sc == scNil | |
6577 | || ext.asym.sc == scUndefined | |
6578 | || ext.asym.sc == scSUndefined) | |
6579 | continue; | |
6580 | ||
6581 | name = input_debug.ssext + ext.asym.iss; | |
6582 | h = mips_elf64_link_hash_lookup (mips_elf64_hash_table (info), | |
6583 | name, false, false, true); | |
6584 | if (h == NULL || h->esym.ifd != -2) | |
6585 | continue; | |
6586 | ||
6587 | if (ext.ifd != -1) | |
6588 | { | |
6589 | BFD_ASSERT (ext.ifd | |
6590 | < input_debug.symbolic_header.ifdMax); | |
6591 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
6592 | } | |
6593 | ||
6594 | h->esym = ext; | |
6595 | } | |
6596 | ||
6597 | /* Free up the information we just read. */ | |
6598 | free (input_debug.line); | |
6599 | free (input_debug.external_dnr); | |
6600 | free (input_debug.external_pdr); | |
6601 | free (input_debug.external_sym); | |
6602 | free (input_debug.external_opt); | |
6603 | free (input_debug.external_aux); | |
6604 | free (input_debug.ss); | |
6605 | free (input_debug.ssext); | |
6606 | free (input_debug.external_fdr); | |
6607 | free (input_debug.external_rfd); | |
6608 | free (input_debug.external_ext); | |
6609 | ||
6610 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
6611 | elf_link_input_bfd ignores this section. */ | |
6612 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
6613 | } | |
6614 | ||
6615 | /* Build the external symbol information. */ | |
6616 | einfo.abfd = abfd; | |
6617 | einfo.info = info; | |
6618 | einfo.debug = &debug; | |
6619 | einfo.swap = swap; | |
6620 | einfo.failed = false; | |
6621 | mips_elf64_link_hash_traverse (mips_elf64_hash_table (info), | |
6622 | mips_elf64_output_extsym, | |
6623 | (PTR) &einfo); | |
6624 | if (einfo.failed) | |
6625 | return false; | |
6626 | ||
6627 | /* Set the size of the .mdebug section. */ | |
6628 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
6629 | ||
6630 | /* Skip this section later on (I don't think this currently | |
6631 | matters, but someday it might). */ | |
6632 | o->link_order_head = (struct bfd_link_order *) NULL; | |
6633 | ||
6634 | mdebug_sec = o; | |
6635 | } | |
6636 | ||
6637 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
6638 | { | |
6639 | const char *subname; | |
6640 | unsigned int c; | |
6641 | Elf32_gptab *tab; | |
6642 | Elf32_External_gptab *ext_tab; | |
6643 | unsigned int i; | |
6644 | ||
6645 | /* The .gptab.sdata and .gptab.sbss sections hold | |
6646 | information describing how the small data area would | |
6647 | change depending upon the -G switch. These sections | |
6648 | not used in executables files. */ | |
6649 | if (! info->relocateable) | |
6650 | { | |
6651 | asection **secpp; | |
6652 | ||
6653 | for (p = o->link_order_head; | |
6654 | p != (struct bfd_link_order *) NULL; | |
6655 | p = p->next) | |
6656 | { | |
6657 | asection *input_section; | |
6658 | ||
6659 | if (p->type != bfd_indirect_link_order) | |
6660 | { | |
fd96f80f | 6661 | if (p->type == bfd_data_link_order) |
5b6a02bc TS |
6662 | continue; |
6663 | abort (); | |
6664 | } | |
6665 | ||
6666 | input_section = p->u.indirect.section; | |
6667 | ||
6668 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
6669 | elf_link_input_bfd ignores this section. */ | |
6670 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
6671 | } | |
6672 | ||
6673 | /* Skip this section later on (I don't think this | |
6674 | currently matters, but someday it might). */ | |
6675 | o->link_order_head = (struct bfd_link_order *) NULL; | |
6676 | ||
6677 | /* Really remove the section. */ | |
6678 | for (secpp = &abfd->sections; | |
6679 | *secpp != o; | |
6680 | secpp = &(*secpp)->next) | |
6681 | ; | |
9e7b37b3 | 6682 | bfd_section_list_remove (abfd, secpp); |
5b6a02bc TS |
6683 | --abfd->section_count; |
6684 | ||
6685 | continue; | |
6686 | } | |
6687 | ||
6688 | /* There is one gptab for initialized data, and one for | |
6689 | uninitialized data. */ | |
6690 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
6691 | gptab_data_sec = o; | |
6692 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
6693 | gptab_bss_sec = o; | |
6694 | else | |
6695 | { | |
6696 | (*_bfd_error_handler) | |
6697 | (_("%s: illegal section name `%s'"), | |
a17aee54 | 6698 | bfd_archive_filename (abfd), o->name); |
5b6a02bc TS |
6699 | bfd_set_error (bfd_error_nonrepresentable_section); |
6700 | return false; | |
6701 | } | |
6702 | ||
6703 | /* The linker script always combines .gptab.data and | |
6704 | .gptab.sdata into .gptab.sdata, and likewise for | |
6705 | .gptab.bss and .gptab.sbss. It is possible that there is | |
6706 | no .sdata or .sbss section in the output file, in which | |
6707 | case we must change the name of the output section. */ | |
6708 | subname = o->name + sizeof ".gptab" - 1; | |
6709 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
6710 | { | |
6711 | if (o == gptab_data_sec) | |
6712 | o->name = ".gptab.data"; | |
6713 | else | |
6714 | o->name = ".gptab.bss"; | |
6715 | subname = o->name + sizeof ".gptab" - 1; | |
6716 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
6717 | } | |
6718 | ||
6719 | /* Set up the first entry. */ | |
6720 | c = 1; | |
6721 | tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); | |
6722 | if (tab == NULL) | |
6723 | return false; | |
6724 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); | |
6725 | tab[0].gt_header.gt_unused = 0; | |
6726 | ||
6727 | /* Combine the input sections. */ | |
6728 | for (p = o->link_order_head; | |
6729 | p != (struct bfd_link_order *) NULL; | |
6730 | p = p->next) | |
6731 | { | |
6732 | asection *input_section; | |
6733 | bfd *input_bfd; | |
6734 | bfd_size_type size; | |
6735 | unsigned long last; | |
6736 | bfd_size_type gpentry; | |
6737 | ||
6738 | if (p->type != bfd_indirect_link_order) | |
6739 | { | |
fd96f80f | 6740 | if (p->type == bfd_data_link_order) |
5b6a02bc TS |
6741 | continue; |
6742 | abort (); | |
6743 | } | |
6744 | ||
6745 | input_section = p->u.indirect.section; | |
6746 | input_bfd = input_section->owner; | |
6747 | ||
6748 | /* Combine the gptab entries for this input section one | |
6749 | by one. We know that the input gptab entries are | |
6750 | sorted by ascending -G value. */ | |
6751 | size = bfd_section_size (input_bfd, input_section); | |
6752 | last = 0; | |
6753 | for (gpentry = sizeof (Elf32_External_gptab); | |
6754 | gpentry < size; | |
6755 | gpentry += sizeof (Elf32_External_gptab)) | |
6756 | { | |
6757 | Elf32_External_gptab ext_gptab; | |
6758 | Elf32_gptab int_gptab; | |
6759 | unsigned long val; | |
6760 | unsigned long add; | |
6761 | boolean exact; | |
6762 | unsigned int look; | |
6763 | ||
6764 | if (! (bfd_get_section_contents | |
6765 | (input_bfd, input_section, (PTR) &ext_gptab, | |
6766 | gpentry, sizeof (Elf32_External_gptab)))) | |
6767 | { | |
6768 | free (tab); | |
6769 | return false; | |
6770 | } | |
6771 | ||
6772 | mips_elf64_swap_gptab_in (input_bfd, &ext_gptab, | |
6773 | &int_gptab); | |
6774 | val = int_gptab.gt_entry.gt_g_value; | |
6775 | add = int_gptab.gt_entry.gt_bytes - last; | |
6776 | ||
6777 | exact = false; | |
6778 | for (look = 1; look < c; look++) | |
6779 | { | |
6780 | if (tab[look].gt_entry.gt_g_value >= val) | |
6781 | tab[look].gt_entry.gt_bytes += add; | |
6782 | ||
6783 | if (tab[look].gt_entry.gt_g_value == val) | |
6784 | exact = true; | |
6785 | } | |
6786 | ||
6787 | if (! exact) | |
6788 | { | |
6789 | Elf32_gptab *new_tab; | |
6790 | unsigned int max; | |
6791 | ||
6792 | /* We need a new table entry. */ | |
6793 | new_tab = ((Elf32_gptab *) | |
6794 | bfd_realloc ((PTR) tab, | |
6795 | (c + 1) * sizeof (Elf32_gptab))); | |
6796 | if (new_tab == NULL) | |
6797 | { | |
6798 | free (tab); | |
6799 | return false; | |
6800 | } | |
6801 | tab = new_tab; | |
6802 | tab[c].gt_entry.gt_g_value = val; | |
6803 | tab[c].gt_entry.gt_bytes = add; | |
6804 | ||
6805 | /* Merge in the size for the next smallest -G | |
6806 | value, since that will be implied by this new | |
6807 | value. */ | |
6808 | max = 0; | |
6809 | for (look = 1; look < c; look++) | |
6810 | { | |
6811 | if (tab[look].gt_entry.gt_g_value < val | |
6812 | && (max == 0 | |
6813 | || (tab[look].gt_entry.gt_g_value | |
6814 | > tab[max].gt_entry.gt_g_value))) | |
6815 | max = look; | |
6816 | } | |
6817 | if (max != 0) | |
6818 | tab[c].gt_entry.gt_bytes += | |
6819 | tab[max].gt_entry.gt_bytes; | |
6820 | ||
6821 | ++c; | |
6822 | } | |
6823 | ||
6824 | last = int_gptab.gt_entry.gt_bytes; | |
6825 | } | |
6826 | ||
6827 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
6828 | elf_link_input_bfd ignores this section. */ | |
6829 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
6830 | } | |
6831 | ||
6832 | /* The table must be sorted by -G value. */ | |
6833 | if (c > 2) | |
6834 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
6835 | ||
6836 | /* Swap out the table. */ | |
6837 | ext_tab = ((Elf32_External_gptab *) | |
6838 | bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); | |
6839 | if (ext_tab == NULL) | |
6840 | { | |
6841 | free (tab); | |
6842 | return false; | |
6843 | } | |
6844 | ||
6845 | for (i = 0; i < c; i++) | |
6846 | mips_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); | |
6847 | free (tab); | |
6848 | ||
6849 | o->_raw_size = c * sizeof (Elf32_External_gptab); | |
6850 | o->contents = (bfd_byte *) ext_tab; | |
6851 | ||
6852 | /* Skip this section later on (I don't think this currently | |
6853 | matters, but someday it might). */ | |
6854 | o->link_order_head = (struct bfd_link_order *) NULL; | |
6855 | } | |
6856 | } | |
6857 | ||
6858 | /* Invoke the regular ELF backend linker to do all the work. */ | |
6859 | if (!bfd_elf64_bfd_final_link (abfd, info)) | |
6860 | return false; | |
6861 | ||
6862 | /* Now write out the computed sections. */ | |
6863 | if (mdebug_sec != (asection *) NULL) | |
6864 | { | |
6865 | BFD_ASSERT (abfd->output_has_begun); | |
6866 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
6867 | swap, info, | |
6868 | mdebug_sec->filepos)) | |
6869 | return false; | |
6870 | ||
6871 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
6872 | } | |
6873 | if (gptab_data_sec != (asection *) NULL) | |
6874 | { | |
6875 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
6876 | gptab_data_sec->contents, | |
6877 | (file_ptr) 0, | |
6878 | gptab_data_sec->_raw_size)) | |
6879 | return false; | |
6880 | } | |
6881 | ||
6882 | if (gptab_bss_sec != (asection *) NULL) | |
6883 | { | |
6884 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
6885 | gptab_bss_sec->contents, | |
6886 | (file_ptr) 0, | |
6887 | gptab_bss_sec->_raw_size)) | |
6888 | return false; | |
6889 | } | |
6890 | ||
6891 | return true; | |
6892 | } | |
6893 | \f | |
6894 | /* ECOFF swapping routines. These are used when dealing with the | |
6895 | .mdebug section, which is in the ECOFF debugging format. */ | |
6896 | static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap = | |
6897 | { | |
6898 | /* Symbol table magic number. */ | |
6899 | magicSym2, | |
6900 | /* Alignment of debugging information. E.g., 4. */ | |
252b5132 RH |
6901 | 8, |
6902 | /* Sizes of external symbolic information. */ | |
6903 | sizeof (struct hdr_ext), | |
6904 | sizeof (struct dnr_ext), | |
6905 | sizeof (struct pdr_ext), | |
6906 | sizeof (struct sym_ext), | |
6907 | sizeof (struct opt_ext), | |
6908 | sizeof (struct fdr_ext), | |
6909 | sizeof (struct rfd_ext), | |
6910 | sizeof (struct ext_ext), | |
6911 | /* Functions to swap in external symbolic data. */ | |
6912 | ecoff_swap_hdr_in, | |
6913 | ecoff_swap_dnr_in, | |
6914 | ecoff_swap_pdr_in, | |
6915 | ecoff_swap_sym_in, | |
6916 | ecoff_swap_opt_in, | |
6917 | ecoff_swap_fdr_in, | |
6918 | ecoff_swap_rfd_in, | |
6919 | ecoff_swap_ext_in, | |
6920 | _bfd_ecoff_swap_tir_in, | |
6921 | _bfd_ecoff_swap_rndx_in, | |
6922 | /* Functions to swap out external symbolic data. */ | |
6923 | ecoff_swap_hdr_out, | |
6924 | ecoff_swap_dnr_out, | |
6925 | ecoff_swap_pdr_out, | |
6926 | ecoff_swap_sym_out, | |
6927 | ecoff_swap_opt_out, | |
6928 | ecoff_swap_fdr_out, | |
6929 | ecoff_swap_rfd_out, | |
6930 | ecoff_swap_ext_out, | |
6931 | _bfd_ecoff_swap_tir_out, | |
6932 | _bfd_ecoff_swap_rndx_out, | |
6933 | /* Function to read in symbolic data. */ | |
6934 | _bfd_mips_elf_read_ecoff_info | |
6935 | }; | |
6936 | \f | |
6937 | /* Relocations in the 64 bit MIPS ELF ABI are more complex than in | |
6938 | standard ELF. This structure is used to redirect the relocation | |
6939 | handling routines. */ | |
6940 | ||
6941 | const struct elf_size_info mips_elf64_size_info = | |
6942 | { | |
6943 | sizeof (Elf64_External_Ehdr), | |
6944 | sizeof (Elf64_External_Phdr), | |
6945 | sizeof (Elf64_External_Shdr), | |
6946 | sizeof (Elf64_Mips_External_Rel), | |
6947 | sizeof (Elf64_Mips_External_Rela), | |
6948 | sizeof (Elf64_External_Sym), | |
6949 | sizeof (Elf64_External_Dyn), | |
6950 | sizeof (Elf_External_Note), | |
c7ac6ff8 MM |
6951 | 4, /* hash-table entry size */ |
6952 | 3, /* internal relocations per external relocations */ | |
252b5132 RH |
6953 | 64, /* arch_size */ |
6954 | 8, /* file_align */ | |
6955 | ELFCLASS64, | |
6956 | EV_CURRENT, | |
6957 | bfd_elf64_write_out_phdrs, | |
6958 | bfd_elf64_write_shdrs_and_ehdr, | |
6959 | mips_elf64_write_relocs, | |
6960 | bfd_elf64_swap_symbol_out, | |
6961 | mips_elf64_slurp_reloc_table, | |
6962 | bfd_elf64_slurp_symbol_table, | |
c7ac6ff8 MM |
6963 | bfd_elf64_swap_dyn_in, |
6964 | bfd_elf64_swap_dyn_out, | |
6965 | mips_elf64_be_swap_reloc_in, | |
6966 | mips_elf64_be_swap_reloc_out, | |
6967 | mips_elf64_be_swap_reloca_in, | |
6968 | mips_elf64_be_swap_reloca_out | |
252b5132 RH |
6969 | }; |
6970 | ||
252b5132 RH |
6971 | #define ELF_ARCH bfd_arch_mips |
6972 | #define ELF_MACHINE_CODE EM_MIPS | |
103186c6 | 6973 | |
252b5132 | 6974 | #define ELF_MAXPAGESIZE 0x1000 |
103186c6 MM |
6975 | |
6976 | #define elf_backend_collect true | |
6977 | #define elf_backend_type_change_ok true | |
6978 | #define elf_backend_can_gc_sections true | |
5b6a02bc TS |
6979 | #define elf_info_to_howto mips_elf64_info_to_howto_rela |
6980 | #define elf_info_to_howto_rel mips_elf64_info_to_howto_rel | |
252b5132 | 6981 | #define elf_backend_object_p _bfd_mips_elf_object_p |
5b6a02bc TS |
6982 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
6983 | #define elf_backend_section_processing _bfd_mips_elf_section_processing | |
103186c6 | 6984 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
252b5132 RH |
6985 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
6986 | #define elf_backend_section_from_bfd_section \ | |
6987 | _bfd_mips_elf_section_from_bfd_section | |
103186c6 | 6988 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
5b6a02bc TS |
6989 | #define elf_backend_link_output_symbol_hook \ |
6990 | _bfd_mips_elf_link_output_symbol_hook | |
103186c6 | 6991 | #define elf_backend_create_dynamic_sections \ |
5b6a02bc TS |
6992 | mips_elf64_create_dynamic_sections |
6993 | #define elf_backend_check_relocs mips_elf64_check_relocs | |
103186c6 | 6994 | #define elf_backend_adjust_dynamic_symbol \ |
5b6a02bc | 6995 | mips_elf64_adjust_dynamic_symbol |
103186c6 | 6996 | #define elf_backend_always_size_sections \ |
5b6a02bc | 6997 | mips_elf64_always_size_sections |
103186c6 | 6998 | #define elf_backend_size_dynamic_sections \ |
5b6a02bc TS |
6999 | mips_elf64_size_dynamic_sections |
7000 | #define elf_backend_relocate_section mips_elf64_relocate_section | |
103186c6 | 7001 | #define elf_backend_finish_dynamic_symbol \ |
5b6a02bc | 7002 | mips_elf64_finish_dynamic_symbol |
103186c6 | 7003 | #define elf_backend_finish_dynamic_sections \ |
5b6a02bc TS |
7004 | mips_elf64_finish_dynamic_sections |
7005 | #define elf_backend_final_write_processing \ | |
7006 | _bfd_mips_elf_final_write_processing | |
7007 | #define elf_backend_additional_program_headers \ | |
7008 | mips_elf64_additional_program_headers | |
7009 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map | |
7010 | #define elf_backend_gc_mark_hook mips_elf64_gc_mark_hook | |
7011 | #define elf_backend_gc_sweep_hook mips_elf64_gc_sweep_hook | |
7012 | #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap | |
7013 | #define elf_backend_size_info mips_elf64_size_info | |
7014 | ||
7015 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) | |
103186c6 | 7016 | #define elf_backend_plt_header_size 0 |
1e2be829 TS |
7017 | |
7018 | /* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations | |
7019 | * work better/work only in RELA, so we default to this. */ | |
7020 | #define elf_backend_may_use_rel_p 1 | |
7021 | #define elf_backend_may_use_rela_p 1 | |
7022 | #define elf_backend_default_use_rela_p 1 | |
103186c6 | 7023 | |
fe8bc63d | 7024 | /* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit |
103186c6 MM |
7025 | MIPS-specific function only applies to IRIX5, which had no 64-bit |
7026 | ABI. */ | |
252b5132 | 7027 | #define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line |
252b5132 | 7028 | #define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents |
103186c6 | 7029 | #define bfd_elf64_bfd_link_hash_table_create \ |
5b6a02bc TS |
7030 | mips_elf64_link_hash_table_create |
7031 | #define bfd_elf64_bfd_final_link mips_elf64_final_link | |
252b5132 RH |
7032 | #define bfd_elf64_bfd_merge_private_bfd_data \ |
7033 | _bfd_mips_elf_merge_private_bfd_data | |
7034 | #define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
103186c6 MM |
7035 | #define bfd_elf64_bfd_print_private_bfd_data \ |
7036 | _bfd_mips_elf_print_private_bfd_data | |
252b5132 | 7037 | |
103186c6 MM |
7038 | #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound |
7039 | #define bfd_elf64_bfd_reloc_type_lookup mips_elf64_reloc_type_lookup | |
252b5132 | 7040 | #define bfd_elf64_archive_functions |
36b45482 TS |
7041 | extern boolean bfd_elf64_archive_slurp_armap |
7042 | PARAMS((bfd *)); | |
7043 | extern boolean bfd_elf64_archive_write_armap | |
7044 | PARAMS((bfd *, unsigned int, struct orl *, unsigned int, int)); | |
252b5132 RH |
7045 | #define bfd_elf64_archive_slurp_extended_name_table \ |
7046 | _bfd_archive_coff_slurp_extended_name_table | |
7047 | #define bfd_elf64_archive_construct_extended_name_table \ | |
7048 | _bfd_archive_coff_construct_extended_name_table | |
7049 | #define bfd_elf64_archive_truncate_arname \ | |
7050 | _bfd_archive_coff_truncate_arname | |
252b5132 RH |
7051 | #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr |
7052 | #define bfd_elf64_archive_openr_next_archived_file \ | |
7053 | _bfd_archive_coff_openr_next_archived_file | |
7054 | #define bfd_elf64_archive_get_elt_at_index \ | |
7055 | _bfd_archive_coff_get_elt_at_index | |
7056 | #define bfd_elf64_archive_generic_stat_arch_elt \ | |
7057 | _bfd_archive_coff_generic_stat_arch_elt | |
7058 | #define bfd_elf64_archive_update_armap_timestamp \ | |
7059 | _bfd_archive_coff_update_armap_timestamp | |
7060 | ||
5b6a02bc TS |
7061 | /* The SGI style (n)64 NewABI. */ |
7062 | #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec | |
7063 | #define TARGET_LITTLE_NAME "elf64-littlemips" | |
7064 | #define TARGET_BIG_SYM bfd_elf64_bigmips_vec | |
7065 | #define TARGET_BIG_NAME "elf64-bigmips" | |
fdbafa10 | 7066 | |
5b6a02bc | 7067 | #include "elf64-target.h" |
fdbafa10 | 7068 | |
5b6a02bc | 7069 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ |
fdbafa10 | 7070 | |
5b6a02bc | 7071 | /* The SYSV-style 'traditional' (n)64 NewABI. */ |
fdbafa10 L |
7072 | #undef TARGET_LITTLE_SYM |
7073 | #undef TARGET_LITTLE_NAME | |
7074 | #undef TARGET_BIG_SYM | |
7075 | #undef TARGET_BIG_NAME | |
7076 | ||
7077 | #define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec | |
7078 | #define TARGET_LITTLE_NAME "elf64-tradlittlemips" | |
7079 | #define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec | |
7080 | #define TARGET_BIG_NAME "elf64-tradbigmips" | |
7081 | ||
5b6a02bc | 7082 | /* Include the target file again for this target. */ |
fdbafa10 | 7083 | #include "elf64-target.h" |