Commit | Line | Data |
---|---|---|
efcbd82c | 1 | /* MIPS-specific support for 32-bit ELF |
f0abc2a1 AM |
2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
3 | 2003 Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
6 | <ian@cygnus.com>. | |
103186c6 MM |
7 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. |
8 | <mark@codesourcery.com> | |
f7cb7d68 UC |
9 | Traditional MIPS targets support added by Koundinya.K, Dansk Data |
10 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
252b5132 RH |
11 | |
12 | This file is part of BFD, the Binary File Descriptor library. | |
13 | ||
14 | This program is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; if not, write to the Free Software | |
26 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
27 | ||
28 | /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly | |
29 | different MIPS ELF from other targets. This matters when linking. | |
30 | This file supports both, switching at runtime. */ | |
31 | ||
32 | #include "bfd.h" | |
33 | #include "sysdep.h" | |
34 | #include "libbfd.h" | |
35 | #include "bfdlink.h" | |
36 | #include "genlink.h" | |
37 | #include "elf-bfd.h" | |
c6e90b02 | 38 | #include "elfxx-mips.h" |
252b5132 RH |
39 | #include "elf/mips.h" |
40 | ||
41 | /* Get the ECOFF swapping routines. */ | |
42 | #include "coff/sym.h" | |
43 | #include "coff/symconst.h" | |
44 | #include "coff/internal.h" | |
45 | #include "coff/ecoff.h" | |
46 | #include "coff/mips.h" | |
23e2c83b | 47 | #define ECOFF_SIGNED_32 |
252b5132 RH |
48 | #include "ecoffswap.h" |
49 | ||
a7ebbfdf TS |
50 | static bfd_reloc_status_type mips_elf_generic_reloc |
51 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
c6e90b02 TS |
52 | static bfd_reloc_status_type mips_elf_hi16_reloc |
53 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
54 | static bfd_reloc_status_type mips_elf_lo16_reloc | |
55 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
56 | static bfd_reloc_status_type mips_elf_got16_reloc | |
57 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
a7ebbfdf TS |
58 | static bfd_reloc_status_type gprel32_with_gp |
59 | PARAMS ((bfd *, asymbol *, arelent *, asection *, bfd_boolean, PTR, | |
60 | bfd_vma)); | |
c6e90b02 TS |
61 | static bfd_reloc_status_type mips_elf_gprel32_reloc |
62 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
63 | static bfd_reloc_status_type mips32_64bit_reloc |
64 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
65 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
66 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
c6e90b02 | 67 | static reloc_howto_type *mips_elf32_rtype_to_howto |
b34976b6 | 68 | PARAMS ((unsigned int, bfd_boolean)); |
252b5132 | 69 | static void mips_info_to_howto_rel |
947216bf | 70 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
3f830999 | 71 | static void mips_info_to_howto_rela |
947216bf | 72 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 AM |
73 | static bfd_boolean mips_elf_sym_is_global |
74 | PARAMS ((bfd *, asymbol *)); | |
75 | static bfd_boolean mips_elf32_object_p | |
76 | PARAMS ((bfd *)); | |
77 | static bfd_boolean mips_elf_is_local_label_name | |
252b5132 | 78 | PARAMS ((bfd *, const char *)); |
252b5132 RH |
79 | static bfd_reloc_status_type mips16_jump_reloc |
80 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
81 | static bfd_reloc_status_type mips16_gprel_reloc | |
82 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 | 83 | static bfd_reloc_status_type mips_elf_final_gp |
b34976b6 AM |
84 | PARAMS ((bfd *, asymbol *, bfd_boolean, char **, bfd_vma *)); |
85 | static bfd_boolean mips_elf_assign_gp | |
86 | PARAMS ((bfd *, bfd_vma *)); | |
87 | static bfd_boolean elf32_mips_grok_prstatus | |
9e80ff3a | 88 | PARAMS ((bfd *, Elf_Internal_Note *)); |
b34976b6 | 89 | static bfd_boolean elf32_mips_grok_psinfo |
9e80ff3a | 90 | PARAMS ((bfd *, Elf_Internal_Note *)); |
c6e90b02 TS |
91 | static irix_compat_t elf32_mips_irix_compat |
92 | PARAMS ((bfd *)); | |
252b5132 | 93 | |
cb7394f2 TS |
94 | extern const bfd_target bfd_elf32_bigmips_vec; |
95 | extern const bfd_target bfd_elf32_littlemips_vec; | |
adb76a3e | 96 | |
a94a7c1c | 97 | /* Nonzero if ABFD is using the N32 ABI. */ |
a94a7c1c MM |
98 | #define ABI_N32_P(abfd) \ |
99 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
100 | ||
4e8a9624 | 101 | /* Whether we are trying to be compatible with IRIX at all. */ |
a94a7c1c | 102 | #define SGI_COMPAT(abfd) \ |
c6e90b02 | 103 | (elf32_mips_irix_compat (abfd) != ict_none) |
103186c6 | 104 | |
252b5132 RH |
105 | /* The number of local .got entries we reserve. */ |
106 | #define MIPS_RESERVED_GOTNO (2) | |
107 | ||
3f830999 MM |
108 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
109 | from smaller values. Start with zero, widen, *then* decrement. */ | |
110 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
111 | ||
d75bc93d TS |
112 | /* The relocation table used for SHT_REL sections. */ |
113 | ||
114 | static reloc_howto_type elf_mips_howto_table_rel[] = | |
115 | { | |
116 | /* No relocation. */ | |
117 | HOWTO (R_MIPS_NONE, /* type */ | |
118 | 0, /* rightshift */ | |
119 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
120 | 0, /* bitsize */ | |
b34976b6 | 121 | FALSE, /* pc_relative */ |
d75bc93d TS |
122 | 0, /* bitpos */ |
123 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 124 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 125 | "R_MIPS_NONE", /* name */ |
b34976b6 | 126 | FALSE, /* partial_inplace */ |
d75bc93d TS |
127 | 0, /* src_mask */ |
128 | 0, /* dst_mask */ | |
b34976b6 | 129 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
130 | |
131 | /* 16 bit relocation. */ | |
132 | HOWTO (R_MIPS_16, /* type */ | |
133 | 0, /* rightshift */ | |
134 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
135 | 16, /* bitsize */ | |
b34976b6 | 136 | FALSE, /* pc_relative */ |
d75bc93d TS |
137 | 0, /* bitpos */ |
138 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 139 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 140 | "R_MIPS_16", /* name */ |
b34976b6 | 141 | TRUE, /* partial_inplace */ |
d75bc93d TS |
142 | 0x0000ffff, /* src_mask */ |
143 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 144 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
145 | |
146 | /* 32 bit relocation. */ | |
147 | HOWTO (R_MIPS_32, /* type */ | |
148 | 0, /* rightshift */ | |
149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
150 | 32, /* bitsize */ | |
b34976b6 | 151 | FALSE, /* pc_relative */ |
d75bc93d TS |
152 | 0, /* bitpos */ |
153 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 154 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 155 | "R_MIPS_32", /* name */ |
b34976b6 | 156 | TRUE, /* partial_inplace */ |
d75bc93d TS |
157 | 0xffffffff, /* src_mask */ |
158 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 159 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
160 | |
161 | /* 32 bit symbol relative relocation. */ | |
162 | HOWTO (R_MIPS_REL32, /* type */ | |
163 | 0, /* rightshift */ | |
164 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
165 | 32, /* bitsize */ | |
b34976b6 | 166 | FALSE, /* pc_relative */ |
d75bc93d TS |
167 | 0, /* bitpos */ |
168 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 169 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 170 | "R_MIPS_REL32", /* name */ |
b34976b6 | 171 | TRUE, /* partial_inplace */ |
d75bc93d TS |
172 | 0xffffffff, /* src_mask */ |
173 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 174 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
175 | |
176 | /* 26 bit jump address. */ | |
177 | HOWTO (R_MIPS_26, /* type */ | |
178 | 2, /* rightshift */ | |
179 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
180 | 26, /* bitsize */ | |
b34976b6 | 181 | FALSE, /* pc_relative */ |
d75bc93d TS |
182 | 0, /* bitpos */ |
183 | complain_overflow_dont, /* complain_on_overflow */ | |
184 | /* This needs complex overflow | |
185 | detection, because the upper four | |
186 | bits must match the PC + 4. */ | |
a7ebbfdf | 187 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 188 | "R_MIPS_26", /* name */ |
b34976b6 | 189 | TRUE, /* partial_inplace */ |
d75bc93d TS |
190 | 0x03ffffff, /* src_mask */ |
191 | 0x03ffffff, /* dst_mask */ | |
b34976b6 | 192 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
193 | |
194 | /* High 16 bits of symbol value. */ | |
195 | HOWTO (R_MIPS_HI16, /* type */ | |
196 | 0, /* rightshift */ | |
197 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
198 | 16, /* bitsize */ | |
b34976b6 | 199 | FALSE, /* pc_relative */ |
d75bc93d TS |
200 | 0, /* bitpos */ |
201 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 202 | mips_elf_hi16_reloc, /* special_function */ |
d75bc93d | 203 | "R_MIPS_HI16", /* name */ |
b34976b6 | 204 | TRUE, /* partial_inplace */ |
d75bc93d TS |
205 | 0x0000ffff, /* src_mask */ |
206 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 207 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
208 | |
209 | /* Low 16 bits of symbol value. */ | |
210 | HOWTO (R_MIPS_LO16, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 16, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
d75bc93d TS |
215 | 0, /* bitpos */ |
216 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 217 | mips_elf_lo16_reloc, /* special_function */ |
d75bc93d | 218 | "R_MIPS_LO16", /* name */ |
b34976b6 | 219 | TRUE, /* partial_inplace */ |
d75bc93d TS |
220 | 0x0000ffff, /* src_mask */ |
221 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
223 | |
224 | /* GP relative reference. */ | |
225 | HOWTO (R_MIPS_GPREL16, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 16, /* bitsize */ | |
b34976b6 | 229 | FALSE, /* pc_relative */ |
d75bc93d TS |
230 | 0, /* bitpos */ |
231 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 232 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
d75bc93d | 233 | "R_MIPS_GPREL16", /* name */ |
b34976b6 | 234 | TRUE, /* partial_inplace */ |
d75bc93d TS |
235 | 0x0000ffff, /* src_mask */ |
236 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 237 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
238 | |
239 | /* Reference to literal section. */ | |
240 | HOWTO (R_MIPS_LITERAL, /* type */ | |
241 | 0, /* rightshift */ | |
242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
243 | 16, /* bitsize */ | |
b34976b6 | 244 | FALSE, /* pc_relative */ |
d75bc93d TS |
245 | 0, /* bitpos */ |
246 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 247 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
d75bc93d | 248 | "R_MIPS_LITERAL", /* name */ |
b34976b6 | 249 | TRUE, /* partial_inplace */ |
d75bc93d TS |
250 | 0x0000ffff, /* src_mask */ |
251 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 252 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
253 | |
254 | /* Reference to global offset table. */ | |
255 | HOWTO (R_MIPS_GOT16, /* type */ | |
256 | 0, /* rightshift */ | |
257 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 16, /* bitsize */ | |
b34976b6 | 259 | FALSE, /* pc_relative */ |
d75bc93d TS |
260 | 0, /* bitpos */ |
261 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 262 | mips_elf_got16_reloc, /* special_function */ |
d75bc93d | 263 | "R_MIPS_GOT16", /* name */ |
b34976b6 | 264 | TRUE, /* partial_inplace */ |
d75bc93d TS |
265 | 0x0000ffff, /* src_mask */ |
266 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 267 | FALSE), /* pcrel_offset */ |
d75bc93d | 268 | |
0b25d3e6 | 269 | /* 16 bit PC relative reference. */ |
d75bc93d | 270 | HOWTO (R_MIPS_PC16, /* type */ |
0b25d3e6 | 271 | 0, /* rightshift */ |
d75bc93d TS |
272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
273 | 16, /* bitsize */ | |
b34976b6 | 274 | TRUE, /* pc_relative */ |
d75bc93d TS |
275 | 0, /* bitpos */ |
276 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 277 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 278 | "R_MIPS_PC16", /* name */ |
b34976b6 | 279 | TRUE, /* partial_inplace */ |
d75bc93d TS |
280 | 0x0000ffff, /* src_mask */ |
281 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 282 | TRUE), /* pcrel_offset */ |
d75bc93d TS |
283 | |
284 | /* 16 bit call through global offset table. */ | |
285 | HOWTO (R_MIPS_CALL16, /* type */ | |
286 | 0, /* rightshift */ | |
287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 16, /* bitsize */ | |
b34976b6 | 289 | FALSE, /* pc_relative */ |
d75bc93d TS |
290 | 0, /* bitpos */ |
291 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 292 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 293 | "R_MIPS_CALL16", /* name */ |
b34976b6 | 294 | TRUE, /* partial_inplace */ |
d75bc93d TS |
295 | 0x0000ffff, /* src_mask */ |
296 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 297 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
298 | |
299 | /* 32 bit GP relative reference. */ | |
300 | HOWTO (R_MIPS_GPREL32, /* type */ | |
301 | 0, /* rightshift */ | |
302 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
303 | 32, /* bitsize */ | |
b34976b6 | 304 | FALSE, /* pc_relative */ |
d75bc93d TS |
305 | 0, /* bitpos */ |
306 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 307 | mips_elf_gprel32_reloc, /* special_function */ |
d75bc93d | 308 | "R_MIPS_GPREL32", /* name */ |
b34976b6 | 309 | TRUE, /* partial_inplace */ |
d75bc93d TS |
310 | 0xffffffff, /* src_mask */ |
311 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 312 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
313 | |
314 | /* The remaining relocs are defined on Irix 5, although they are | |
315 | not defined by the ABI. */ | |
316 | EMPTY_HOWTO (13), | |
317 | EMPTY_HOWTO (14), | |
318 | EMPTY_HOWTO (15), | |
319 | ||
320 | /* A 5 bit shift field. */ | |
321 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
322 | 0, /* rightshift */ | |
323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
324 | 5, /* bitsize */ | |
b34976b6 | 325 | FALSE, /* pc_relative */ |
d75bc93d TS |
326 | 6, /* bitpos */ |
327 | complain_overflow_bitfield, /* complain_on_overflow */ | |
a7ebbfdf | 328 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 329 | "R_MIPS_SHIFT5", /* name */ |
b34976b6 | 330 | TRUE, /* partial_inplace */ |
d75bc93d TS |
331 | 0x000007c0, /* src_mask */ |
332 | 0x000007c0, /* dst_mask */ | |
b34976b6 | 333 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
334 | |
335 | /* A 6 bit shift field. */ | |
336 | /* FIXME: This is not handled correctly; a special function is | |
337 | needed to put the most significant bit in the right place. */ | |
338 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 6, /* bitsize */ | |
b34976b6 | 342 | FALSE, /* pc_relative */ |
d75bc93d TS |
343 | 6, /* bitpos */ |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
a7ebbfdf | 345 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 346 | "R_MIPS_SHIFT6", /* name */ |
b34976b6 | 347 | TRUE, /* partial_inplace */ |
d75bc93d TS |
348 | 0x000007c4, /* src_mask */ |
349 | 0x000007c4, /* dst_mask */ | |
b34976b6 | 350 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
351 | |
352 | /* A 64 bit relocation. */ | |
353 | HOWTO (R_MIPS_64, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 64, /* bitsize */ | |
b34976b6 | 357 | FALSE, /* pc_relative */ |
d75bc93d TS |
358 | 0, /* bitpos */ |
359 | complain_overflow_dont, /* complain_on_overflow */ | |
360 | mips32_64bit_reloc, /* special_function */ | |
361 | "R_MIPS_64", /* name */ | |
b34976b6 | 362 | TRUE, /* partial_inplace */ |
d75bc93d TS |
363 | MINUS_ONE, /* src_mask */ |
364 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 365 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
366 | |
367 | /* Displacement in the global offset table. */ | |
368 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 16, /* bitsize */ | |
b34976b6 | 372 | FALSE, /* pc_relative */ |
d75bc93d TS |
373 | 0, /* bitpos */ |
374 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 375 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 376 | "R_MIPS_GOT_DISP", /* name */ |
b34976b6 | 377 | TRUE, /* partial_inplace */ |
d75bc93d TS |
378 | 0x0000ffff, /* src_mask */ |
379 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 380 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
381 | |
382 | /* Displacement to page pointer in the global offset table. */ | |
383 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
384 | 0, /* rightshift */ | |
385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
386 | 16, /* bitsize */ | |
b34976b6 | 387 | FALSE, /* pc_relative */ |
d75bc93d TS |
388 | 0, /* bitpos */ |
389 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 390 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 391 | "R_MIPS_GOT_PAGE", /* name */ |
b34976b6 | 392 | TRUE, /* partial_inplace */ |
d75bc93d TS |
393 | 0x0000ffff, /* src_mask */ |
394 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 395 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
396 | |
397 | /* Offset from page pointer in the global offset table. */ | |
398 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
399 | 0, /* rightshift */ | |
400 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
401 | 16, /* bitsize */ | |
b34976b6 | 402 | FALSE, /* pc_relative */ |
d75bc93d TS |
403 | 0, /* bitpos */ |
404 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 405 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 406 | "R_MIPS_GOT_OFST", /* name */ |
b34976b6 | 407 | TRUE, /* partial_inplace */ |
d75bc93d TS |
408 | 0x0000ffff, /* src_mask */ |
409 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 410 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
411 | |
412 | /* High 16 bits of displacement in global offset table. */ | |
413 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
414 | 0, /* rightshift */ | |
415 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 16, /* bitsize */ | |
b34976b6 | 417 | FALSE, /* pc_relative */ |
d75bc93d TS |
418 | 0, /* bitpos */ |
419 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 420 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 421 | "R_MIPS_GOT_HI16", /* name */ |
b34976b6 | 422 | TRUE, /* partial_inplace */ |
d75bc93d TS |
423 | 0x0000ffff, /* src_mask */ |
424 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 425 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
426 | |
427 | /* Low 16 bits of displacement in global offset table. */ | |
428 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
429 | 0, /* rightshift */ | |
430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 16, /* bitsize */ | |
b34976b6 | 432 | FALSE, /* pc_relative */ |
d75bc93d TS |
433 | 0, /* bitpos */ |
434 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 435 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 436 | "R_MIPS_GOT_LO16", /* name */ |
b34976b6 | 437 | TRUE, /* partial_inplace */ |
d75bc93d TS |
438 | 0x0000ffff, /* src_mask */ |
439 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 440 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
441 | |
442 | /* 64 bit subtraction. Used in the N32 ABI. */ | |
443 | HOWTO (R_MIPS_SUB, /* type */ | |
444 | 0, /* rightshift */ | |
445 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
446 | 64, /* bitsize */ | |
b34976b6 | 447 | FALSE, /* pc_relative */ |
d75bc93d TS |
448 | 0, /* bitpos */ |
449 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 450 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 451 | "R_MIPS_SUB", /* name */ |
b34976b6 | 452 | TRUE, /* partial_inplace */ |
d75bc93d TS |
453 | MINUS_ONE, /* src_mask */ |
454 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 455 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
456 | |
457 | /* Used to cause the linker to insert and delete instructions? */ | |
458 | EMPTY_HOWTO (R_MIPS_INSERT_A), | |
459 | EMPTY_HOWTO (R_MIPS_INSERT_B), | |
460 | EMPTY_HOWTO (R_MIPS_DELETE), | |
461 | ||
462 | /* Get the higher value of a 64 bit addend. */ | |
463 | HOWTO (R_MIPS_HIGHER, /* type */ | |
464 | 0, /* rightshift */ | |
465 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
466 | 16, /* bitsize */ | |
b34976b6 | 467 | FALSE, /* pc_relative */ |
d75bc93d TS |
468 | 0, /* bitpos */ |
469 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 470 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 471 | "R_MIPS_HIGHER", /* name */ |
b34976b6 | 472 | TRUE, /* partial_inplace */ |
d75bc93d TS |
473 | 0x0000ffff, /* src_mask */ |
474 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 475 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
476 | |
477 | /* Get the highest value of a 64 bit addend. */ | |
478 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
479 | 0, /* rightshift */ | |
480 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
481 | 16, /* bitsize */ | |
b34976b6 | 482 | FALSE, /* pc_relative */ |
d75bc93d TS |
483 | 0, /* bitpos */ |
484 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 485 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 486 | "R_MIPS_HIGHEST", /* name */ |
b34976b6 | 487 | TRUE, /* partial_inplace */ |
d75bc93d TS |
488 | 0x0000ffff, /* src_mask */ |
489 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 490 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
491 | |
492 | /* High 16 bits of displacement in global offset table. */ | |
493 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
494 | 0, /* rightshift */ | |
495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
496 | 16, /* bitsize */ | |
b34976b6 | 497 | FALSE, /* pc_relative */ |
d75bc93d TS |
498 | 0, /* bitpos */ |
499 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 500 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 501 | "R_MIPS_CALL_HI16", /* name */ |
b34976b6 | 502 | TRUE, /* partial_inplace */ |
d75bc93d TS |
503 | 0x0000ffff, /* src_mask */ |
504 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 505 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
506 | |
507 | /* Low 16 bits of displacement in global offset table. */ | |
508 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
509 | 0, /* rightshift */ | |
510 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
511 | 16, /* bitsize */ | |
b34976b6 | 512 | FALSE, /* pc_relative */ |
d75bc93d TS |
513 | 0, /* bitpos */ |
514 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 515 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 516 | "R_MIPS_CALL_LO16", /* name */ |
b34976b6 | 517 | TRUE, /* partial_inplace */ |
d75bc93d TS |
518 | 0x0000ffff, /* src_mask */ |
519 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 520 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
521 | |
522 | /* Section displacement. */ | |
523 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
524 | 0, /* rightshift */ | |
525 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
526 | 32, /* bitsize */ | |
b34976b6 | 527 | FALSE, /* pc_relative */ |
d75bc93d TS |
528 | 0, /* bitpos */ |
529 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 530 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 531 | "R_MIPS_SCN_DISP", /* name */ |
b34976b6 | 532 | TRUE, /* partial_inplace */ |
d75bc93d TS |
533 | 0xffffffff, /* src_mask */ |
534 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 535 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
536 | |
537 | EMPTY_HOWTO (R_MIPS_REL16), | |
538 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
539 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
540 | EMPTY_HOWTO (R_MIPS_RELGOT), | |
541 | ||
542 | /* Protected jump conversion. This is an optimization hint. No | |
543 | relocation is required for correctness. */ | |
544 | HOWTO (R_MIPS_JALR, /* type */ | |
545 | 0, /* rightshift */ | |
546 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
547 | 32, /* bitsize */ | |
b34976b6 | 548 | FALSE, /* pc_relative */ |
d75bc93d TS |
549 | 0, /* bitpos */ |
550 | complain_overflow_dont, /* complain_on_overflow */ | |
a7ebbfdf | 551 | mips_elf_generic_reloc, /* special_function */ |
d75bc93d | 552 | "R_MIPS_JALR", /* name */ |
b34976b6 | 553 | FALSE, /* partial_inplace */ |
d75bc93d TS |
554 | 0x00000000, /* src_mask */ |
555 | 0x00000000, /* dst_mask */ | |
b34976b6 | 556 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
557 | }; |
558 | ||
c6e90b02 TS |
559 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This |
560 | is a hack to make the linker think that we need 64 bit values. */ | |
561 | static reloc_howto_type elf_mips_ctor64_howto = | |
562 | HOWTO (R_MIPS_64, /* type */ | |
252b5132 | 563 | 0, /* rightshift */ |
c6e90b02 | 564 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 565 | 32, /* bitsize */ |
b34976b6 | 566 | FALSE, /* pc_relative */ |
252b5132 | 567 | 0, /* bitpos */ |
c6e90b02 TS |
568 | complain_overflow_signed, /* complain_on_overflow */ |
569 | mips32_64bit_reloc, /* special_function */ | |
570 | "R_MIPS_64", /* name */ | |
b34976b6 | 571 | TRUE, /* partial_inplace */ |
c6e90b02 | 572 | 0xffffffff, /* src_mask */ |
252b5132 | 573 | 0xffffffff, /* dst_mask */ |
b34976b6 | 574 | FALSE); /* pcrel_offset */ |
252b5132 | 575 | |
c6e90b02 TS |
576 | /* The reloc used for the mips16 jump instruction. */ |
577 | static reloc_howto_type elf_mips16_jump_howto = | |
578 | HOWTO (R_MIPS16_26, /* type */ | |
252b5132 RH |
579 | 2, /* rightshift */ |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 26, /* bitsize */ | |
b34976b6 | 582 | FALSE, /* pc_relative */ |
252b5132 RH |
583 | 0, /* bitpos */ |
584 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
585 | /* This needs complex overflow |
586 | detection, because the upper four | |
587 | bits must match the PC. */ | |
588 | mips16_jump_reloc, /* special_function */ | |
589 | "R_MIPS16_26", /* name */ | |
b34976b6 | 590 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
591 | 0x3ffffff, /* src_mask */ |
592 | 0x3ffffff, /* dst_mask */ | |
b34976b6 | 593 | FALSE); /* pcrel_offset */ |
252b5132 | 594 | |
c6e90b02 TS |
595 | /* The reloc used for the mips16 gprel instruction. */ |
596 | static reloc_howto_type elf_mips16_gprel_howto = | |
597 | HOWTO (R_MIPS16_GPREL, /* type */ | |
252b5132 RH |
598 | 0, /* rightshift */ |
599 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
600 | 16, /* bitsize */ | |
b34976b6 | 601 | FALSE, /* pc_relative */ |
252b5132 | 602 | 0, /* bitpos */ |
c6e90b02 TS |
603 | complain_overflow_signed, /* complain_on_overflow */ |
604 | mips16_gprel_reloc, /* special_function */ | |
605 | "R_MIPS16_GPREL", /* name */ | |
b34976b6 | 606 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
607 | 0x07ff001f, /* src_mask */ |
608 | 0x07ff001f, /* dst_mask */ | |
b34976b6 | 609 | FALSE); /* pcrel_offset */ |
252b5132 | 610 | |
c6e90b02 TS |
611 | /* GNU extensions for embedded-pic. */ |
612 | /* High 16 bits of symbol value, pc-relative. */ | |
613 | static reloc_howto_type elf_mips_gnu_rel_hi16 = | |
614 | HOWTO (R_MIPS_GNU_REL_HI16, /* type */ | |
252b5132 RH |
615 | 0, /* rightshift */ |
616 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
617 | 16, /* bitsize */ | |
b34976b6 | 618 | TRUE, /* pc_relative */ |
252b5132 RH |
619 | 0, /* bitpos */ |
620 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
621 | mips_elf_hi16_reloc, /* special_function */ |
622 | "R_MIPS_GNU_REL_HI16", /* name */ | |
b34976b6 | 623 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
624 | 0xffff, /* src_mask */ |
625 | 0xffff, /* dst_mask */ | |
b34976b6 | 626 | TRUE); /* pcrel_offset */ |
252b5132 | 627 | |
c6e90b02 TS |
628 | /* Low 16 bits of symbol value, pc-relative. */ |
629 | static reloc_howto_type elf_mips_gnu_rel_lo16 = | |
630 | HOWTO (R_MIPS_GNU_REL_LO16, /* type */ | |
252b5132 RH |
631 | 0, /* rightshift */ |
632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
633 | 16, /* bitsize */ | |
b34976b6 | 634 | TRUE, /* pc_relative */ |
252b5132 | 635 | 0, /* bitpos */ |
c6e90b02 TS |
636 | complain_overflow_dont, /* complain_on_overflow */ |
637 | mips_elf_lo16_reloc, /* special_function */ | |
638 | "R_MIPS_GNU_REL_LO16", /* name */ | |
b34976b6 | 639 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
640 | 0xffff, /* src_mask */ |
641 | 0xffff, /* dst_mask */ | |
b34976b6 | 642 | TRUE); /* pcrel_offset */ |
252b5132 | 643 | |
c6e90b02 TS |
644 | /* 16 bit offset for pc-relative branches. */ |
645 | static reloc_howto_type elf_mips_gnu_rel16_s2 = | |
646 | HOWTO (R_MIPS_GNU_REL16_S2, /* type */ | |
647 | 2, /* rightshift */ | |
252b5132 RH |
648 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
649 | 16, /* bitsize */ | |
b34976b6 | 650 | TRUE, /* pc_relative */ |
252b5132 RH |
651 | 0, /* bitpos */ |
652 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 653 | mips_elf_generic_reloc, /* special_function */ |
c6e90b02 | 654 | "R_MIPS_GNU_REL16_S2", /* name */ |
b34976b6 | 655 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
656 | 0xffff, /* src_mask */ |
657 | 0xffff, /* dst_mask */ | |
b34976b6 | 658 | TRUE); /* pcrel_offset */ |
252b5132 | 659 | |
c6e90b02 TS |
660 | /* 64 bit pc-relative. */ |
661 | static reloc_howto_type elf_mips_gnu_pcrel64 = | |
662 | HOWTO (R_MIPS_PC64, /* type */ | |
252b5132 | 663 | 0, /* rightshift */ |
c6e90b02 TS |
664 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
665 | 64, /* bitsize */ | |
b34976b6 | 666 | TRUE, /* pc_relative */ |
252b5132 RH |
667 | 0, /* bitpos */ |
668 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 669 | mips_elf_generic_reloc, /* special_function */ |
c6e90b02 | 670 | "R_MIPS_PC64", /* name */ |
b34976b6 | 671 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
672 | MINUS_ONE, /* src_mask */ |
673 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 674 | TRUE); /* pcrel_offset */ |
252b5132 | 675 | |
c6e90b02 TS |
676 | /* 32 bit pc-relative. */ |
677 | static reloc_howto_type elf_mips_gnu_pcrel32 = | |
678 | HOWTO (R_MIPS_PC32, /* type */ | |
252b5132 RH |
679 | 0, /* rightshift */ |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 681 | 32, /* bitsize */ |
b34976b6 | 682 | TRUE, /* pc_relative */ |
252b5132 RH |
683 | 0, /* bitpos */ |
684 | complain_overflow_signed, /* complain_on_overflow */ | |
a7ebbfdf | 685 | mips_elf_generic_reloc, /* special_function */ |
c6e90b02 | 686 | "R_MIPS_PC32", /* name */ |
b34976b6 | 687 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
688 | 0xffffffff, /* src_mask */ |
689 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 690 | TRUE); /* pcrel_offset */ |
252b5132 | 691 | |
c6e90b02 TS |
692 | /* GNU extension to record C++ vtable hierarchy */ |
693 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = | |
694 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ | |
252b5132 RH |
695 | 0, /* rightshift */ |
696 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 697 | 0, /* bitsize */ |
b34976b6 | 698 | FALSE, /* pc_relative */ |
252b5132 | 699 | 0, /* bitpos */ |
c6e90b02 TS |
700 | complain_overflow_dont, /* complain_on_overflow */ |
701 | NULL, /* special_function */ | |
702 | "R_MIPS_GNU_VTINHERIT", /* name */ | |
b34976b6 | 703 | FALSE, /* partial_inplace */ |
d75bc93d | 704 | 0, /* src_mask */ |
c6e90b02 | 705 | 0, /* dst_mask */ |
b34976b6 | 706 | FALSE); /* pcrel_offset */ |
252b5132 | 707 | |
c6e90b02 TS |
708 | /* GNU extension to record C++ vtable member usage */ |
709 | static reloc_howto_type elf_mips_gnu_vtentry_howto = | |
710 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ | |
252b5132 RH |
711 | 0, /* rightshift */ |
712 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 713 | 0, /* bitsize */ |
b34976b6 | 714 | FALSE, /* pc_relative */ |
252b5132 RH |
715 | 0, /* bitpos */ |
716 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
717 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
718 | "R_MIPS_GNU_VTENTRY", /* name */ | |
b34976b6 | 719 | FALSE, /* partial_inplace */ |
d75bc93d | 720 | 0, /* src_mask */ |
c6e90b02 | 721 | 0, /* dst_mask */ |
b34976b6 | 722 | FALSE); /* pcrel_offset */ |
252b5132 | 723 | |
a7ebbfdf TS |
724 | /* We use this instead of bfd_elf_generic_reloc because the latter |
725 | gets the handling of zero addends wrong. */ | |
726 | static bfd_reloc_status_type | |
727 | mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, input_section, | |
728 | output_bfd, error_message) | |
729 | bfd *abfd ATTRIBUTE_UNUSED; | |
730 | arelent *reloc_entry; | |
731 | asymbol *symbol; | |
732 | PTR data ATTRIBUTE_UNUSED; | |
733 | asection *input_section; | |
734 | bfd *output_bfd; | |
735 | char **error_message ATTRIBUTE_UNUSED; | |
736 | { | |
737 | /* If we're relocating, and this is an external symbol, we don't want | |
738 | to change anything. */ | |
739 | if (output_bfd != (bfd *) NULL | |
740 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
741 | && (symbol->flags & BSF_LOCAL) != 0) | |
742 | { | |
743 | reloc_entry->address += input_section->output_offset; | |
744 | return bfd_reloc_ok; | |
745 | } | |
746 | ||
747 | /* Just go on, nothing to see here. */ | |
748 | return bfd_reloc_continue; | |
749 | } | |
750 | ||
252b5132 | 751 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination |
c6e90b02 TS |
752 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to |
753 | the HI16. Here we just save the information we need; we do the | |
754 | actual relocation when we see the LO16. | |
c6142e5d | 755 | |
c6e90b02 TS |
756 | MIPS ELF requires that the LO16 immediately follow the HI16. As a |
757 | GNU extension, for non-pc-relative relocations, we permit an | |
758 | arbitrary number of HI16 relocs to be associated with a single LO16 | |
759 | reloc. This extension permits gcc to output the HI and LO relocs | |
760 | itself. | |
c6142e5d | 761 | |
c6e90b02 TS |
762 | This cannot be done for PC-relative relocations because both the HI16 |
763 | and LO16 parts of the relocations must be done relative to the LO16 | |
764 | part, and there can be carry to or borrow from the HI16 part. */ | |
103186c6 | 765 | |
c6e90b02 | 766 | struct mips_hi16 |
103186c6 | 767 | { |
c6e90b02 TS |
768 | struct mips_hi16 *next; |
769 | bfd_byte *addr; | |
770 | bfd_vma addend; | |
771 | }; | |
be3ccd9c | 772 | |
c6e90b02 | 773 | /* FIXME: This should not be a static variable. */ |
103186c6 | 774 | |
c6e90b02 | 775 | static struct mips_hi16 *mips_hi16_list; |
252b5132 | 776 | |
c6e90b02 TS |
777 | static bfd_reloc_status_type |
778 | mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
779 | output_bfd, error_message) | |
780 | bfd *abfd ATTRIBUTE_UNUSED; | |
781 | arelent *reloc_entry; | |
782 | asymbol *symbol; | |
783 | PTR data; | |
784 | asection *input_section; | |
785 | bfd *output_bfd; | |
786 | char **error_message; | |
252b5132 | 787 | { |
c6e90b02 TS |
788 | bfd_reloc_status_type ret; |
789 | bfd_vma relocation; | |
790 | struct mips_hi16 *n; | |
252b5132 | 791 | |
cb7394f2 | 792 | /* If we're relocating, and this is an external symbol, we don't want |
c6e90b02 TS |
793 | to change anything. */ |
794 | if (output_bfd != (bfd *) NULL | |
795 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
a7ebbfdf | 796 | && (symbol->flags & BSF_LOCAL) != 0) |
252b5132 | 797 | { |
c6e90b02 TS |
798 | reloc_entry->address += input_section->output_offset; |
799 | return bfd_reloc_ok; | |
252b5132 | 800 | } |
252b5132 | 801 | |
c6e90b02 | 802 | ret = bfd_reloc_ok; |
252b5132 | 803 | |
c6e90b02 TS |
804 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
805 | { | |
1049f94e | 806 | bfd_boolean relocatable; |
c6e90b02 | 807 | bfd_vma gp; |
252b5132 | 808 | |
c6e90b02 TS |
809 | if (ret == bfd_reloc_undefined) |
810 | abort (); | |
252b5132 | 811 | |
c6e90b02 | 812 | if (output_bfd != NULL) |
1049f94e | 813 | relocatable = TRUE; |
252b5132 | 814 | else |
252b5132 | 815 | { |
1049f94e | 816 | relocatable = FALSE; |
c6e90b02 | 817 | output_bfd = symbol->section->output_section->owner; |
252b5132 RH |
818 | } |
819 | ||
1049f94e | 820 | ret = mips_elf_final_gp (output_bfd, symbol, relocatable, |
c6e90b02 TS |
821 | error_message, &gp); |
822 | if (ret != bfd_reloc_ok) | |
823 | return ret; | |
252b5132 | 824 | |
c6e90b02 | 825 | relocation = gp - reloc_entry->address; |
252b5132 RH |
826 | } |
827 | else | |
828 | { | |
c6e90b02 TS |
829 | if (bfd_is_und_section (symbol->section) |
830 | && output_bfd == (bfd *) NULL) | |
831 | ret = bfd_reloc_undefined; | |
252b5132 | 832 | |
c6e90b02 TS |
833 | if (bfd_is_com_section (symbol->section)) |
834 | relocation = 0; | |
252b5132 | 835 | else |
c6e90b02 TS |
836 | relocation = symbol->value; |
837 | } | |
252b5132 | 838 | |
c6e90b02 TS |
839 | relocation += symbol->section->output_section->vma; |
840 | relocation += symbol->section->output_offset; | |
841 | relocation += reloc_entry->addend; | |
9117d219 | 842 | |
c6e90b02 TS |
843 | if (reloc_entry->address > input_section->_cooked_size) |
844 | return bfd_reloc_outofrange; | |
9117d219 | 845 | |
c6e90b02 TS |
846 | /* Save the information, and let LO16 do the actual relocation. */ |
847 | n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n); | |
848 | if (n == NULL) | |
849 | return bfd_reloc_outofrange; | |
850 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
851 | n->addend = relocation; | |
852 | n->next = mips_hi16_list; | |
853 | mips_hi16_list = n; | |
252b5132 | 854 | |
c6e90b02 TS |
855 | if (output_bfd != (bfd *) NULL) |
856 | reloc_entry->address += input_section->output_offset; | |
252b5132 | 857 | |
c6e90b02 | 858 | return ret; |
252b5132 RH |
859 | } |
860 | ||
c6e90b02 TS |
861 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit |
862 | inplace relocation; this function exists in order to do the | |
863 | R_MIPS_HI16 relocation described above. */ | |
252b5132 | 864 | |
c6e90b02 TS |
865 | static bfd_reloc_status_type |
866 | mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
867 | output_bfd, error_message) | |
252b5132 | 868 | bfd *abfd; |
c6e90b02 TS |
869 | arelent *reloc_entry; |
870 | asymbol *symbol; | |
871 | PTR data; | |
872 | asection *input_section; | |
873 | bfd *output_bfd; | |
874 | char **error_message; | |
252b5132 | 875 | { |
c6e90b02 | 876 | arelent gp_disp_relent; |
252b5132 | 877 | |
c6e90b02 | 878 | if (mips_hi16_list != NULL) |
252b5132 | 879 | { |
c6e90b02 | 880 | struct mips_hi16 *l; |
252b5132 | 881 | |
c6e90b02 TS |
882 | l = mips_hi16_list; |
883 | while (l != NULL) | |
884 | { | |
885 | unsigned long insn; | |
886 | unsigned long val; | |
887 | unsigned long vallo; | |
888 | struct mips_hi16 *next; | |
252b5132 | 889 | |
c6e90b02 TS |
890 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
891 | { | |
892 | gp_disp_relent = *reloc_entry; | |
893 | reloc_entry = &gp_disp_relent; | |
894 | reloc_entry->addend = l->addend; | |
895 | } | |
91709090 TS |
896 | else |
897 | { | |
898 | /* Do the HI16 relocation. Note that we actually don't need | |
899 | to know anything about the LO16 itself, except where to | |
900 | find the low 16 bits of the addend needed by the LO16. */ | |
901 | insn = bfd_get_32 (abfd, l->addr); | |
902 | vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
903 | /* The low order 16 bits are always treated as a signed | |
904 | value. */ | |
905 | vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000; | |
906 | val = ((insn & 0xffff) << 16) + vallo; | |
907 | val += l->addend; | |
908 | ||
909 | /* If PC-relative, we need to subtract out the address of the LO | |
910 | half of the HI/LO. (The actual relocation is relative | |
911 | to that instruction.) */ | |
912 | if (reloc_entry->howto->pc_relative) | |
913 | val -= reloc_entry->address; | |
914 | ||
915 | /* At this point, "val" has the value of the combined HI/LO | |
916 | pair. If the low order 16 bits (which will be used for | |
917 | the LO16 insn) are negative, then we will need an | |
918 | adjustment for the high order 16 bits. */ | |
919 | val += 0x8000; | |
920 | val = (val >> 16) & 0xffff; | |
921 | ||
922 | insn &= ~ (bfd_vma) 0xffff; | |
923 | insn |= val; | |
924 | bfd_put_32 (abfd, (bfd_vma) insn, l->addr); | |
925 | } | |
8a20f077 | 926 | |
c6e90b02 TS |
927 | next = l->next; |
928 | free (l); | |
929 | l = next; | |
930 | } | |
252b5132 | 931 | |
c6e90b02 | 932 | mips_hi16_list = NULL; |
43917054 | 933 | } |
c6e90b02 | 934 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
252b5132 | 935 | { |
c6e90b02 TS |
936 | bfd_reloc_status_type ret; |
937 | bfd_vma gp, relocation; | |
252b5132 | 938 | |
c6e90b02 | 939 | /* FIXME: Does this case ever occur? */ |
252b5132 | 940 | |
b34976b6 | 941 | ret = mips_elf_final_gp (output_bfd, symbol, TRUE, error_message, &gp); |
c6e90b02 TS |
942 | if (ret != bfd_reloc_ok) |
943 | return ret; | |
252b5132 | 944 | |
c6e90b02 TS |
945 | relocation = gp - reloc_entry->address; |
946 | relocation += symbol->section->output_section->vma; | |
947 | relocation += symbol->section->output_offset; | |
948 | relocation += reloc_entry->addend; | |
252b5132 | 949 | |
c6e90b02 TS |
950 | if (reloc_entry->address > input_section->_cooked_size) |
951 | return bfd_reloc_outofrange; | |
252b5132 | 952 | |
c6e90b02 TS |
953 | gp_disp_relent = *reloc_entry; |
954 | reloc_entry = &gp_disp_relent; | |
955 | reloc_entry->addend = relocation - 4; | |
252b5132 RH |
956 | } |
957 | ||
c6e90b02 | 958 | /* Now do the LO16 reloc in the usual way. */ |
a7ebbfdf TS |
959 | return mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
960 | input_section, output_bfd, error_message); | |
252b5132 RH |
961 | } |
962 | ||
c6e90b02 TS |
963 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
964 | table used for PIC code. If the symbol is an external symbol, the | |
965 | instruction is modified to contain the offset of the appropriate | |
966 | entry in the global offset table. If the symbol is a section | |
967 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
968 | addends are combined to form the real addend against the section | |
969 | symbol; the GOT16 is modified to contain the offset of an entry in | |
970 | the global offset table, and the LO16 is modified to offset it | |
971 | appropriately. Thus an offset larger than 16 bits requires a | |
972 | modified value in the global offset table. | |
252b5132 | 973 | |
c6e90b02 TS |
974 | This implementation suffices for the assembler, but the linker does |
975 | not yet know how to create global offset tables. */ | |
252b5132 | 976 | |
c6e90b02 TS |
977 | static bfd_reloc_status_type |
978 | mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
979 | output_bfd, error_message) | |
980 | bfd *abfd; | |
981 | arelent *reloc_entry; | |
982 | asymbol *symbol; | |
983 | PTR data; | |
984 | asection *input_section; | |
252b5132 | 985 | bfd *output_bfd; |
c6e90b02 | 986 | char **error_message; |
252b5132 | 987 | { |
cb7394f2 | 988 | /* If we're relocating, and this is an external symbol, we don't want |
c6e90b02 TS |
989 | to change anything. */ |
990 | if (output_bfd != (bfd *) NULL | |
991 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
a7ebbfdf | 992 | && (symbol->flags & BSF_LOCAL) != 0) |
c6e90b02 TS |
993 | { |
994 | reloc_entry->address += input_section->output_offset; | |
995 | return bfd_reloc_ok; | |
996 | } | |
252b5132 | 997 | |
a7ebbfdf TS |
998 | return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, |
999 | input_section, output_bfd, error_message); | |
252b5132 RH |
1000 | } |
1001 | ||
b34976b6 | 1002 | /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a |
c6e90b02 | 1003 | dangerous relocation. */ |
252b5132 | 1004 | |
b34976b6 | 1005 | static bfd_boolean |
c6e90b02 TS |
1006 | mips_elf_assign_gp (output_bfd, pgp) |
1007 | bfd *output_bfd; | |
1008 | bfd_vma *pgp; | |
252b5132 | 1009 | { |
c6e90b02 TS |
1010 | unsigned int count; |
1011 | asymbol **sym; | |
1012 | unsigned int i; | |
e92d460e | 1013 | |
c6e90b02 TS |
1014 | /* If we've already figured out what GP will be, just return it. */ |
1015 | *pgp = _bfd_get_gp_value (output_bfd); | |
1016 | if (*pgp) | |
b34976b6 | 1017 | return TRUE; |
c6e90b02 TS |
1018 | |
1019 | count = bfd_get_symcount (output_bfd); | |
1020 | sym = bfd_get_outsymbols (output_bfd); | |
252b5132 | 1021 | |
c6e90b02 TS |
1022 | /* The linker script will have created a symbol named `_gp' with the |
1023 | appropriate value. */ | |
1024 | if (sym == (asymbol **) NULL) | |
1025 | i = count; | |
1026 | else | |
252b5132 | 1027 | { |
c6e90b02 TS |
1028 | for (i = 0; i < count; i++, sym++) |
1029 | { | |
1030 | register const char *name; | |
1031 | ||
1032 | name = bfd_asymbol_name (*sym); | |
1033 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1034 | { | |
1035 | *pgp = bfd_asymbol_value (*sym); | |
1036 | _bfd_set_gp_value (output_bfd, *pgp); | |
1037 | break; | |
1038 | } | |
1039 | } | |
252b5132 RH |
1040 | } |
1041 | ||
c6e90b02 | 1042 | if (i >= count) |
252b5132 | 1043 | { |
c6e90b02 TS |
1044 | /* Only get the error once. */ |
1045 | *pgp = 4; | |
1046 | _bfd_set_gp_value (output_bfd, *pgp); | |
b34976b6 | 1047 | return FALSE; |
252b5132 RH |
1048 | } |
1049 | ||
b34976b6 | 1050 | return TRUE; |
252b5132 RH |
1051 | } |
1052 | ||
c6e90b02 TS |
1053 | /* We have to figure out the gp value, so that we can adjust the |
1054 | symbol value correctly. We look up the symbol _gp in the output | |
1055 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1056 | target data. We don't need to adjust the symbol value for an | |
1049f94e | 1057 | external symbol if we are producing relocatable output. */ |
252b5132 | 1058 | |
c6e90b02 | 1059 | static bfd_reloc_status_type |
1049f94e | 1060 | mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, pgp) |
252b5132 | 1061 | bfd *output_bfd; |
c6e90b02 | 1062 | asymbol *symbol; |
1049f94e | 1063 | bfd_boolean relocatable; |
c6e90b02 TS |
1064 | char **error_message; |
1065 | bfd_vma *pgp; | |
252b5132 | 1066 | { |
c6e90b02 | 1067 | if (bfd_is_und_section (symbol->section) |
1049f94e | 1068 | && ! relocatable) |
252b5132 | 1069 | { |
c6e90b02 TS |
1070 | *pgp = 0; |
1071 | return bfd_reloc_undefined; | |
252b5132 RH |
1072 | } |
1073 | ||
c6e90b02 TS |
1074 | *pgp = _bfd_get_gp_value (output_bfd); |
1075 | if (*pgp == 0 | |
1049f94e | 1076 | && (! relocatable |
c6e90b02 | 1077 | || (symbol->flags & BSF_SECTION_SYM) != 0)) |
252b5132 | 1078 | { |
1049f94e | 1079 | if (relocatable) |
252b5132 | 1080 | { |
c6e90b02 TS |
1081 | /* Make up a value. */ |
1082 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1083 | _bfd_set_gp_value (output_bfd, *pgp); | |
252b5132 | 1084 | } |
c6e90b02 | 1085 | else if (!mips_elf_assign_gp (output_bfd, pgp)) |
252b5132 | 1086 | { |
c6e90b02 TS |
1087 | *error_message = |
1088 | (char *) _("GP relative relocation when _gp not defined"); | |
1089 | return bfd_reloc_dangerous; | |
252b5132 | 1090 | } |
252b5132 RH |
1091 | } |
1092 | ||
c6e90b02 TS |
1093 | return bfd_reloc_ok; |
1094 | } | |
252b5132 | 1095 | |
c6e90b02 TS |
1096 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
1097 | become the offset from the gp register. This function also handles | |
1098 | R_MIPS_LITERAL relocations, although those can be handled more | |
1099 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
1100 | merged. */ | |
252b5132 | 1101 | |
c6e90b02 TS |
1102 | bfd_reloc_status_type |
1103 | _bfd_mips_elf32_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1104 | output_bfd, error_message) | |
1105 | bfd *abfd; | |
1106 | arelent *reloc_entry; | |
1107 | asymbol *symbol; | |
1108 | PTR data; | |
1109 | asection *input_section; | |
1110 | bfd *output_bfd; | |
1111 | char **error_message; | |
1112 | { | |
1049f94e | 1113 | bfd_boolean relocatable; |
c6e90b02 TS |
1114 | bfd_reloc_status_type ret; |
1115 | bfd_vma gp; | |
252b5132 | 1116 | |
a7ebbfdf TS |
1117 | /* If we're relocating, and this is an external symbol, we don't want |
1118 | to change anything. */ | |
c6e90b02 TS |
1119 | if (output_bfd != (bfd *) NULL |
1120 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
a7ebbfdf | 1121 | && (symbol->flags & BSF_LOCAL) != 0) |
c6e90b02 TS |
1122 | { |
1123 | reloc_entry->address += input_section->output_offset; | |
1124 | return bfd_reloc_ok; | |
1125 | } | |
252b5132 | 1126 | |
c6e90b02 | 1127 | if (output_bfd != (bfd *) NULL) |
1049f94e | 1128 | relocatable = TRUE; |
c6e90b02 TS |
1129 | else |
1130 | { | |
1049f94e | 1131 | relocatable = FALSE; |
c6e90b02 TS |
1132 | output_bfd = symbol->section->output_section->owner; |
1133 | } | |
252b5132 | 1134 | |
1049f94e | 1135 | ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, |
c6e90b02 TS |
1136 | &gp); |
1137 | if (ret != bfd_reloc_ok) | |
1138 | return ret; | |
252b5132 | 1139 | |
c6e90b02 | 1140 | return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
1049f94e | 1141 | input_section, relocatable, |
c6e90b02 TS |
1142 | data, gp); |
1143 | } | |
252b5132 | 1144 | |
cb7394f2 TS |
1145 | /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must |
1146 | become the offset from the gp register. */ | |
252b5132 | 1147 | |
c6e90b02 TS |
1148 | static bfd_reloc_status_type |
1149 | mips_elf_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1150 | output_bfd, error_message) | |
1151 | bfd *abfd; | |
1152 | arelent *reloc_entry; | |
1153 | asymbol *symbol; | |
1154 | PTR data; | |
1155 | asection *input_section; | |
1156 | bfd *output_bfd; | |
1157 | char **error_message; | |
1158 | { | |
1049f94e | 1159 | bfd_boolean relocatable; |
c6e90b02 TS |
1160 | bfd_reloc_status_type ret; |
1161 | bfd_vma gp; | |
252b5132 | 1162 | |
a7ebbfdf TS |
1163 | /* If we're relocating, and this is an external symbol, we don't want |
1164 | to change anything. */ | |
c6e90b02 TS |
1165 | if (output_bfd != (bfd *) NULL |
1166 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
a7ebbfdf | 1167 | && (symbol->flags & BSF_LOCAL) != 0) |
c6e90b02 TS |
1168 | { |
1169 | *error_message = (char *) | |
1170 | _("32bits gp relative relocation occurs for an external symbol"); | |
1171 | return bfd_reloc_outofrange; | |
1172 | } | |
252b5132 | 1173 | |
c6e90b02 | 1174 | if (output_bfd != (bfd *) NULL) |
1049f94e | 1175 | relocatable = TRUE; |
c6e90b02 TS |
1176 | else |
1177 | { | |
1049f94e | 1178 | relocatable = FALSE; |
c6e90b02 | 1179 | output_bfd = symbol->section->output_section->owner; |
c6e90b02 | 1180 | } |
252b5132 | 1181 | |
1049f94e | 1182 | ret = mips_elf_final_gp (output_bfd, symbol, relocatable, |
a7ebbfdf TS |
1183 | error_message, &gp); |
1184 | if (ret != bfd_reloc_ok) | |
1185 | return ret; | |
1186 | ||
c6e90b02 | 1187 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, |
1049f94e | 1188 | relocatable, data, gp); |
c6e90b02 | 1189 | } |
252b5132 | 1190 | |
c6e90b02 | 1191 | static bfd_reloc_status_type |
1049f94e | 1192 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocatable, data, |
c6e90b02 TS |
1193 | gp) |
1194 | bfd *abfd; | |
1195 | asymbol *symbol; | |
1196 | arelent *reloc_entry; | |
1197 | asection *input_section; | |
1049f94e | 1198 | bfd_boolean relocatable; |
c6e90b02 TS |
1199 | PTR data; |
1200 | bfd_vma gp; | |
1201 | { | |
1202 | bfd_vma relocation; | |
a7ebbfdf | 1203 | bfd_vma val; |
252b5132 | 1204 | |
c6e90b02 TS |
1205 | if (bfd_is_com_section (symbol->section)) |
1206 | relocation = 0; | |
1207 | else | |
1208 | relocation = symbol->value; | |
252b5132 | 1209 | |
c6e90b02 TS |
1210 | relocation += symbol->section->output_section->vma; |
1211 | relocation += symbol->section->output_offset; | |
252b5132 | 1212 | |
c6e90b02 TS |
1213 | if (reloc_entry->address > input_section->_cooked_size) |
1214 | return bfd_reloc_outofrange; | |
252b5132 | 1215 | |
c6e90b02 | 1216 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
1217 | val = reloc_entry->addend; |
1218 | ||
1219 | if (reloc_entry->howto->partial_inplace) | |
1220 | val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 1221 | |
c6e90b02 | 1222 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 1223 | are producing relocatable output, we don't want to do this for |
c6e90b02 | 1224 | an external symbol. */ |
1049f94e | 1225 | if (! relocatable |
c6e90b02 TS |
1226 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
1227 | val += relocation - gp; | |
252b5132 | 1228 | |
a7ebbfdf TS |
1229 | if (reloc_entry->howto->partial_inplace) |
1230 | bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); | |
1231 | else | |
1232 | reloc_entry->addend = val; | |
c6142e5d | 1233 | |
1049f94e | 1234 | if (relocatable) |
c6e90b02 | 1235 | reloc_entry->address += input_section->output_offset; |
252b5132 | 1236 | |
c6e90b02 | 1237 | return bfd_reloc_ok; |
252b5132 RH |
1238 | } |
1239 | ||
c6e90b02 TS |
1240 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are |
1241 | generated when addresses are 64 bits. The upper 32 bits are a simple | |
1242 | sign extension. */ | |
7403cb63 | 1243 | |
c6e90b02 TS |
1244 | static bfd_reloc_status_type |
1245 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1246 | output_bfd, error_message) | |
1247 | bfd *abfd; | |
1248 | arelent *reloc_entry; | |
1249 | asymbol *symbol; | |
1250 | PTR data; | |
1251 | asection *input_section; | |
1252 | bfd *output_bfd; | |
1253 | char **error_message; | |
7403cb63 | 1254 | { |
c6e90b02 TS |
1255 | bfd_reloc_status_type r; |
1256 | arelent reloc32; | |
1257 | unsigned long val; | |
1258 | bfd_size_type addr; | |
7403cb63 | 1259 | |
a7ebbfdf TS |
1260 | r = mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
1261 | input_section, output_bfd, error_message); | |
c6e90b02 TS |
1262 | if (r != bfd_reloc_continue) |
1263 | return r; | |
be3ccd9c | 1264 | |
c6e90b02 TS |
1265 | /* Do a normal 32 bit relocation on the lower 32 bits. */ |
1266 | reloc32 = *reloc_entry; | |
1267 | if (bfd_big_endian (abfd)) | |
1268 | reloc32.address += 4; | |
1269 | reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; | |
1270 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, | |
1271 | output_bfd, error_message); | |
be3ccd9c | 1272 | |
c6e90b02 TS |
1273 | /* Sign extend into the upper 32 bits. */ |
1274 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
1275 | if ((val & 0x80000000) != 0) | |
1276 | val = 0xffffffff; | |
1277 | else | |
1278 | val = 0; | |
1279 | addr = reloc_entry->address; | |
1280 | if (bfd_little_endian (abfd)) | |
1281 | addr += 4; | |
1282 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr); | |
1283 | ||
1284 | return r; | |
7403cb63 MM |
1285 | } |
1286 | ||
c6e90b02 | 1287 | /* Handle a mips16 jump. */ |
252b5132 | 1288 | |
c6e90b02 TS |
1289 | static bfd_reloc_status_type |
1290 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1291 | output_bfd, error_message) | |
1292 | bfd *abfd ATTRIBUTE_UNUSED; | |
1293 | arelent *reloc_entry; | |
1294 | asymbol *symbol; | |
1295 | PTR data ATTRIBUTE_UNUSED; | |
1296 | asection *input_section; | |
252b5132 | 1297 | bfd *output_bfd; |
c6e90b02 | 1298 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 | 1299 | { |
c6e90b02 TS |
1300 | if (output_bfd != (bfd *) NULL |
1301 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1302 | && reloc_entry->addend == 0) | |
252b5132 | 1303 | { |
c6e90b02 TS |
1304 | reloc_entry->address += input_section->output_offset; |
1305 | return bfd_reloc_ok; | |
1306 | } | |
252b5132 | 1307 | |
c6e90b02 TS |
1308 | /* FIXME. */ |
1309 | { | |
b34976b6 | 1310 | static bfd_boolean warned; |
252b5132 | 1311 | |
c6e90b02 TS |
1312 | if (! warned) |
1313 | (*_bfd_error_handler) | |
1314 | (_("Linking mips16 objects into %s format is not supported"), | |
1315 | bfd_get_target (input_section->output_section->owner)); | |
b34976b6 | 1316 | warned = TRUE; |
c6e90b02 | 1317 | } |
252b5132 | 1318 | |
c6e90b02 TS |
1319 | return bfd_reloc_undefined; |
1320 | } | |
252b5132 | 1321 | |
c6e90b02 | 1322 | /* Handle a mips16 GP relative reloc. */ |
252b5132 | 1323 | |
c6e90b02 TS |
1324 | static bfd_reloc_status_type |
1325 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1326 | output_bfd, error_message) | |
1327 | bfd *abfd; | |
1328 | arelent *reloc_entry; | |
1329 | asymbol *symbol; | |
1330 | PTR data; | |
1331 | asection *input_section; | |
1332 | bfd *output_bfd; | |
1333 | char **error_message; | |
1334 | { | |
1049f94e | 1335 | bfd_boolean relocatable; |
c6e90b02 TS |
1336 | bfd_reloc_status_type ret; |
1337 | bfd_vma gp; | |
a7ebbfdf TS |
1338 | unsigned short extend = 0; |
1339 | unsigned short insn = 0; | |
1340 | bfd_signed_vma val; | |
1341 | bfd_vma relocation; | |
252b5132 | 1342 | |
a7ebbfdf TS |
1343 | /* If we're relocating, and this is an external symbol, we don't want |
1344 | to change anything. */ | |
c6e90b02 TS |
1345 | if (output_bfd != NULL |
1346 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
a7ebbfdf | 1347 | && (symbol->flags & BSF_LOCAL) != 0) |
c6e90b02 TS |
1348 | { |
1349 | reloc_entry->address += input_section->output_offset; | |
1350 | return bfd_reloc_ok; | |
1351 | } | |
252b5132 | 1352 | |
c6e90b02 | 1353 | if (output_bfd != NULL) |
1049f94e | 1354 | relocatable = TRUE; |
c6e90b02 TS |
1355 | else |
1356 | { | |
1049f94e | 1357 | relocatable = FALSE; |
c6e90b02 | 1358 | output_bfd = symbol->section->output_section->owner; |
252b5132 RH |
1359 | } |
1360 | ||
1049f94e | 1361 | ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, |
c6e90b02 TS |
1362 | &gp); |
1363 | if (ret != bfd_reloc_ok) | |
1364 | return ret; | |
252b5132 | 1365 | |
c6e90b02 TS |
1366 | if (reloc_entry->address > input_section->_cooked_size) |
1367 | return bfd_reloc_outofrange; | |
252b5132 | 1368 | |
a7ebbfdf TS |
1369 | if (bfd_is_com_section (symbol->section)) |
1370 | relocation = 0; | |
1371 | else | |
1372 | relocation = symbol->value; | |
252b5132 | 1373 | |
a7ebbfdf TS |
1374 | relocation += symbol->section->output_section->vma; |
1375 | relocation += symbol->section->output_offset; | |
1376 | ||
1377 | /* Set val to the offset into the section or symbol. */ | |
1378 | val = reloc_entry->addend; | |
1379 | ||
1380 | if (reloc_entry->howto->partial_inplace) | |
1381 | { | |
1382 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
1383 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1384 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); | |
1385 | val += ((extend & 0x1f) << 11) | (extend & 0x7e0) | (insn & 0x1f); | |
1386 | } | |
1387 | ||
1388 | _bfd_mips_elf_sign_extend(val, 16); | |
1389 | ||
1390 | /* Adjust val for the final section location and GP value. If we | |
1049f94e | 1391 | are producing relocatable output, we don't want to do this for |
a7ebbfdf | 1392 | an external symbol. */ |
1049f94e | 1393 | if (! relocatable |
a7ebbfdf TS |
1394 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
1395 | val += relocation - gp; | |
1396 | ||
1397 | if (reloc_entry->howto->partial_inplace) | |
1398 | { | |
1399 | bfd_put_16 (abfd, | |
1400 | (bfd_vma) ((extend & 0xf800) | |
1401 | | ((val >> 11) & 0x1f) | |
1402 | | (val & 0x7e0)), | |
1403 | (bfd_byte *) data + reloc_entry->address); | |
1404 | bfd_put_16 (abfd, | |
1405 | (bfd_vma) ((insn & 0xffe0) | |
1406 | | (val & 0x1f)), | |
1407 | (bfd_byte *) data + reloc_entry->address + 2); | |
1408 | } | |
1409 | else | |
1410 | reloc_entry->addend = val; | |
1411 | ||
1049f94e | 1412 | if (relocatable) |
a7ebbfdf TS |
1413 | reloc_entry->address += input_section->output_offset; |
1414 | else if (((val & ~0xffff) != ~0xffff) && ((val & ~0xffff) != 0)) | |
1415 | return bfd_reloc_overflow; | |
1416 | ||
1417 | return bfd_reloc_ok; | |
c6e90b02 | 1418 | } |
7403cb63 | 1419 | |
c6e90b02 | 1420 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
252b5132 | 1421 | |
c6e90b02 | 1422 | struct elf_reloc_map { |
cb7394f2 TS |
1423 | bfd_reloc_code_real_type bfd_val; |
1424 | enum elf_mips_reloc_type elf_val; | |
c6e90b02 | 1425 | }; |
252b5132 | 1426 | |
c6e90b02 TS |
1427 | static const struct elf_reloc_map mips_reloc_map[] = |
1428 | { | |
28458e7e | 1429 | { BFD_RELOC_NONE, R_MIPS_NONE }, |
c6e90b02 TS |
1430 | { BFD_RELOC_16, R_MIPS_16 }, |
1431 | { BFD_RELOC_32, R_MIPS_32 }, | |
cb7394f2 | 1432 | /* There is no BFD reloc for R_MIPS_REL32. */ |
c6e90b02 TS |
1433 | { BFD_RELOC_64, R_MIPS_64 }, |
1434 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
1435 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1436 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1437 | { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, | |
1438 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1439 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
0b25d3e6 | 1440 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, |
c6e90b02 TS |
1441 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, |
1442 | { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, | |
1443 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
1444 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
1445 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
1446 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, | |
1447 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, | |
1448 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, | |
1449 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, | |
1450 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } | |
1451 | }; | |
252b5132 | 1452 | |
c6e90b02 | 1453 | /* Given a BFD reloc type, return a howto structure. */ |
252b5132 | 1454 | |
c6e90b02 TS |
1455 | static reloc_howto_type * |
1456 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
1457 | bfd *abfd; | |
1458 | bfd_reloc_code_real_type code; | |
252b5132 | 1459 | { |
c6e90b02 | 1460 | unsigned int i; |
cb7394f2 | 1461 | reloc_howto_type *howto_table = elf_mips_howto_table_rel; |
252b5132 | 1462 | |
cb7394f2 TS |
1463 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); |
1464 | i++) | |
252b5132 | 1465 | { |
cb7394f2 TS |
1466 | if (mips_reloc_map[i].bfd_val == code) |
1467 | return &howto_table[(int) mips_reloc_map[i].elf_val]; | |
252b5132 RH |
1468 | } |
1469 | ||
c6e90b02 | 1470 | switch (code) |
252b5132 | 1471 | { |
c6e90b02 TS |
1472 | default: |
1473 | bfd_set_error (bfd_error_bad_value); | |
1474 | return NULL; | |
252b5132 | 1475 | |
c6e90b02 TS |
1476 | case BFD_RELOC_CTOR: |
1477 | /* We need to handle BFD_RELOC_CTOR specially. | |
1478 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the | |
69931e60 AO |
1479 | size of addresses of the ABI. */ |
1480 | if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64 | |
1481 | | E_MIPS_ABI_EABI64)) != 0) | |
c6e90b02 | 1482 | return &elf_mips_ctor64_howto; |
69931e60 AO |
1483 | else |
1484 | return &howto_table[(int) R_MIPS_32]; | |
252b5132 | 1485 | |
c6e90b02 TS |
1486 | case BFD_RELOC_MIPS16_JMP: |
1487 | return &elf_mips16_jump_howto; | |
1488 | case BFD_RELOC_MIPS16_GPREL: | |
1489 | return &elf_mips16_gprel_howto; | |
1490 | case BFD_RELOC_VTABLE_INHERIT: | |
1491 | return &elf_mips_gnu_vtinherit_howto; | |
1492 | case BFD_RELOC_VTABLE_ENTRY: | |
1493 | return &elf_mips_gnu_vtentry_howto; | |
1494 | case BFD_RELOC_PCREL_HI16_S: | |
1495 | return &elf_mips_gnu_rel_hi16; | |
1496 | case BFD_RELOC_PCREL_LO16: | |
1497 | return &elf_mips_gnu_rel_lo16; | |
0b25d3e6 | 1498 | case BFD_RELOC_16_PCREL_S2: |
c6e90b02 TS |
1499 | return &elf_mips_gnu_rel16_s2; |
1500 | case BFD_RELOC_64_PCREL: | |
1501 | return &elf_mips_gnu_pcrel64; | |
1502 | case BFD_RELOC_32_PCREL: | |
1503 | return &elf_mips_gnu_pcrel32; | |
1504 | } | |
1505 | } | |
252b5132 | 1506 | |
947216bf | 1507 | /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 1508 | |
c6e90b02 TS |
1509 | static reloc_howto_type * |
1510 | mips_elf32_rtype_to_howto (r_type, rela_p) | |
1511 | unsigned int r_type; | |
b34976b6 | 1512 | bfd_boolean rela_p ATTRIBUTE_UNUSED; |
c6e90b02 TS |
1513 | { |
1514 | switch (r_type) | |
1515 | { | |
1516 | case R_MIPS16_26: | |
1517 | return &elf_mips16_jump_howto; | |
c6e90b02 TS |
1518 | case R_MIPS16_GPREL: |
1519 | return &elf_mips16_gprel_howto; | |
c6e90b02 TS |
1520 | case R_MIPS_GNU_VTINHERIT: |
1521 | return &elf_mips_gnu_vtinherit_howto; | |
c6e90b02 TS |
1522 | case R_MIPS_GNU_VTENTRY: |
1523 | return &elf_mips_gnu_vtentry_howto; | |
c6e90b02 TS |
1524 | case R_MIPS_GNU_REL_HI16: |
1525 | return &elf_mips_gnu_rel_hi16; | |
c6e90b02 TS |
1526 | case R_MIPS_GNU_REL_LO16: |
1527 | return &elf_mips_gnu_rel_lo16; | |
c6e90b02 TS |
1528 | case R_MIPS_GNU_REL16_S2: |
1529 | return &elf_mips_gnu_rel16_s2; | |
c6e90b02 TS |
1530 | case R_MIPS_PC64: |
1531 | return &elf_mips_gnu_pcrel64; | |
c6e90b02 TS |
1532 | case R_MIPS_PC32: |
1533 | return &elf_mips_gnu_pcrel32; | |
c6e90b02 TS |
1534 | default: |
1535 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
1536 | return &elf_mips_howto_table_rel[r_type]; | |
1537 | } | |
1538 | } | |
252b5132 | 1539 | |
947216bf | 1540 | /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 1541 | |
c6e90b02 TS |
1542 | static void |
1543 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
1544 | bfd *abfd; | |
1545 | arelent *cache_ptr; | |
947216bf | 1546 | Elf_Internal_Rela *dst; |
c6e90b02 TS |
1547 | { |
1548 | unsigned int r_type; | |
252b5132 | 1549 | |
c6e90b02 | 1550 | r_type = ELF32_R_TYPE (dst->r_info); |
b34976b6 | 1551 | cache_ptr->howto = mips_elf32_rtype_to_howto (r_type, FALSE); |
252b5132 | 1552 | |
c6e90b02 TS |
1553 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP |
1554 | value for the object file. We get the addend now, rather than | |
1555 | when we do the relocation, because the symbol manipulations done | |
1556 | by the linker may cause us to lose track of the input BFD. */ | |
1557 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
1558 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
1559 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
1560 | cache_ptr->addend = elf_gp (abfd); | |
1561 | } | |
5499724a | 1562 | |
947216bf | 1563 | /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ |
252b5132 | 1564 | |
c6e90b02 TS |
1565 | static void |
1566 | mips_info_to_howto_rela (abfd, cache_ptr, dst) | |
1567 | bfd *abfd; | |
1568 | arelent *cache_ptr; | |
947216bf | 1569 | Elf_Internal_Rela *dst; |
c6e90b02 | 1570 | { |
947216bf | 1571 | mips_info_to_howto_rel (abfd, cache_ptr, dst); |
252b5132 | 1572 | |
c6e90b02 | 1573 | /* If we ever need to do any extra processing with dst->r_addend |
947216bf | 1574 | (the field omitted in an Elf_Internal_Rel) we can do it here. */ |
c6e90b02 TS |
1575 | } |
1576 | \f | |
1577 | /* Determine whether a symbol is global for the purposes of splitting | |
1578 | the symbol table into global symbols and local symbols. At least | |
1579 | on Irix 5, this split must be between section symbols and all other | |
1580 | symbols. On most ELF targets the split is between static symbols | |
1581 | and externally visible symbols. */ | |
252b5132 | 1582 | |
b34976b6 | 1583 | static bfd_boolean |
c6e90b02 TS |
1584 | mips_elf_sym_is_global (abfd, sym) |
1585 | bfd *abfd ATTRIBUTE_UNUSED; | |
1586 | asymbol *sym; | |
1587 | { | |
1588 | if (SGI_COMPAT (abfd)) | |
1589 | return (sym->flags & BSF_SECTION_SYM) == 0; | |
1590 | else | |
1591 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
1592 | || bfd_is_und_section (bfd_get_section (sym)) | |
1593 | || bfd_is_com_section (bfd_get_section (sym))); | |
1594 | } | |
1595 | \f | |
1596 | /* Set the right machine number for a MIPS ELF file. */ | |
7403cb63 | 1597 | |
b34976b6 | 1598 | static bfd_boolean |
c6e90b02 TS |
1599 | mips_elf32_object_p (abfd) |
1600 | bfd *abfd; | |
1601 | { | |
1602 | unsigned long mach; | |
103186c6 | 1603 | |
c6e90b02 TS |
1604 | /* Irix 5 and 6 are broken. Object file symbol tables are not always |
1605 | sorted correctly such that local symbols precede global symbols, | |
1606 | and the sh_info field in the symbol table is not always right. */ | |
1607 | if (SGI_COMPAT (abfd)) | |
b34976b6 | 1608 | elf_bad_symtab (abfd) = TRUE; |
103186c6 | 1609 | |
8a397dad | 1610 | if (ABI_N32_P (abfd)) |
b34976b6 | 1611 | return FALSE; |
8a397dad | 1612 | |
c6e90b02 TS |
1613 | mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); |
1614 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); | |
252b5132 | 1615 | |
b34976b6 | 1616 | return TRUE; |
c6e90b02 TS |
1617 | } |
1618 | \f | |
1619 | /* MIPS ELF local labels start with '$', not 'L'. */ | |
252b5132 | 1620 | |
b34976b6 | 1621 | static bfd_boolean |
c6e90b02 TS |
1622 | mips_elf_is_local_label_name (abfd, name) |
1623 | bfd *abfd; | |
1624 | const char *name; | |
1625 | { | |
1626 | if (name[0] == '$') | |
b34976b6 | 1627 | return TRUE; |
252b5132 | 1628 | |
c6e90b02 TS |
1629 | /* On Irix 6, the labels go back to starting with '.', so we accept |
1630 | the generic ELF local label syntax as well. */ | |
1631 | return _bfd_elf_is_local_label_name (abfd, name); | |
252b5132 RH |
1632 | } |
1633 | \f | |
c6e90b02 | 1634 | /* Support for core dump NOTE sections. */ |
b34976b6 | 1635 | static bfd_boolean |
c6e90b02 | 1636 | elf32_mips_grok_prstatus (abfd, note) |
bb0082d6 AM |
1637 | bfd *abfd; |
1638 | Elf_Internal_Note *note; | |
1639 | { | |
1640 | int offset; | |
dc810e39 | 1641 | unsigned int raw_size; |
bb0082d6 AM |
1642 | |
1643 | switch (note->descsz) | |
1644 | { | |
1645 | default: | |
b34976b6 | 1646 | return FALSE; |
bb0082d6 AM |
1647 | |
1648 | case 256: /* Linux/MIPS */ | |
1649 | /* pr_cursig */ | |
1650 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1651 | ||
1652 | /* pr_pid */ | |
1653 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1654 | ||
1655 | /* pr_reg */ | |
1656 | offset = 72; | |
1657 | raw_size = 180; | |
1658 | ||
1659 | break; | |
1660 | } | |
1661 | ||
1662 | /* Make a ".reg/999" section. */ | |
936e320b AM |
1663 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
1664 | raw_size, note->descpos + offset); | |
bb0082d6 AM |
1665 | } |
1666 | ||
b34976b6 | 1667 | static bfd_boolean |
c6e90b02 | 1668 | elf32_mips_grok_psinfo (abfd, note) |
bb0082d6 AM |
1669 | bfd *abfd; |
1670 | Elf_Internal_Note *note; | |
1671 | { | |
1672 | switch (note->descsz) | |
1673 | { | |
1674 | default: | |
b34976b6 | 1675 | return FALSE; |
bb0082d6 AM |
1676 | |
1677 | case 128: /* Linux/MIPS elf_prpsinfo */ | |
1678 | elf_tdata (abfd)->core_program | |
1679 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1680 | elf_tdata (abfd)->core_command | |
1681 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1682 | } | |
1683 | ||
1684 | /* Note that for some reason, a spurious space is tacked | |
1685 | onto the end of the args in some (at least one anyway) | |
1686 | implementations, so strip it off if it exists. */ | |
1687 | ||
1688 | { | |
1689 | char *command = elf_tdata (abfd)->core_command; | |
1690 | int n = strlen (command); | |
1691 | ||
1692 | if (0 < n && command[n - 1] == ' ') | |
1693 | command[n - 1] = '\0'; | |
1694 | } | |
1695 | ||
b34976b6 | 1696 | return TRUE; |
bb0082d6 AM |
1697 | } |
1698 | \f | |
c6e90b02 TS |
1699 | /* Depending on the target vector we generate some version of Irix |
1700 | executables or "normal" MIPS ELF ABI executables. */ | |
1701 | static irix_compat_t | |
1702 | elf32_mips_irix_compat (abfd) | |
1703 | bfd *abfd; | |
1704 | { | |
cb7394f2 TS |
1705 | if ((abfd->xvec == &bfd_elf32_bigmips_vec) |
1706 | || (abfd->xvec == &bfd_elf32_littlemips_vec)) | |
c6e90b02 | 1707 | return ict_irix5; |
cb7394f2 TS |
1708 | else |
1709 | return ict_none; | |
c6e90b02 | 1710 | } |
73d074b4 | 1711 | \f |
030d18fb CD |
1712 | /* Given a data section and an in-memory embedded reloc section, store |
1713 | relocation information into the embedded reloc section which can be | |
1714 | used at runtime to relocate the data section. This is called by the | |
1715 | linker when the --embedded-relocs switch is used. This is called | |
1716 | after the add_symbols entry point has been called for all the | |
1717 | objects, and before the final_link entry point is called. */ | |
1718 | ||
b34976b6 | 1719 | bfd_boolean |
030d18fb CD |
1720 | bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
1721 | bfd *abfd; | |
1722 | struct bfd_link_info *info; | |
1723 | asection *datasec; | |
1724 | asection *relsec; | |
1725 | char **errmsg; | |
1726 | { | |
1727 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
1728 | Elf_Internal_Sym *isymbuf = NULL; |
1729 | Elf_Internal_Rela *internal_relocs = NULL; | |
030d18fb CD |
1730 | Elf_Internal_Rela *irel, *irelend; |
1731 | bfd_byte *p; | |
030d18fb | 1732 | |
1049f94e | 1733 | BFD_ASSERT (! info->relocatable); |
030d18fb CD |
1734 | |
1735 | *errmsg = NULL; | |
1736 | ||
1737 | if (datasec->reloc_count == 0) | |
b34976b6 | 1738 | return TRUE; |
030d18fb | 1739 | |
030d18fb CD |
1740 | /* Read this BFD's symbols if we haven't done so already, or get the cached |
1741 | copy if it exists. */ | |
6cdc0ccc AM |
1742 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1743 | if (symtab_hdr->sh_info != 0) | |
030d18fb | 1744 | { |
6cdc0ccc AM |
1745 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1746 | if (isymbuf == NULL) | |
1747 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1748 | symtab_hdr->sh_info, 0, | |
1749 | NULL, NULL, NULL); | |
1750 | if (isymbuf == NULL) | |
030d18fb CD |
1751 | goto error_return; |
1752 | } | |
1753 | ||
1754 | /* Get a copy of the native relocations. */ | |
45d6a902 | 1755 | internal_relocs = (_bfd_elf_link_read_relocs |
030d18fb CD |
1756 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
1757 | info->keep_memory)); | |
1758 | if (internal_relocs == NULL) | |
1759 | goto error_return; | |
030d18fb CD |
1760 | |
1761 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12); | |
1762 | if (relsec->contents == NULL) | |
1763 | goto error_return; | |
1764 | ||
1765 | p = relsec->contents; | |
1766 | ||
1767 | irelend = internal_relocs + datasec->reloc_count; | |
1768 | ||
1769 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
1770 | { | |
1771 | asection *targetsec; | |
1772 | ||
1773 | /* We are going to write a four byte longword into the runtime | |
c6e90b02 TS |
1774 | reloc section. The longword will be the address in the data |
1775 | section which must be relocated. It is followed by the name | |
1776 | of the target section NUL-padded or truncated to 8 | |
1777 | characters. */ | |
030d18fb CD |
1778 | |
1779 | /* We can only relocate absolute longword relocs at run time. */ | |
1780 | if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) && | |
1781 | (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64)) | |
1782 | { | |
1783 | *errmsg = _("unsupported reloc type"); | |
1784 | bfd_set_error (bfd_error_bad_value); | |
1785 | goto error_return; | |
1786 | } | |
1787 | /* Get the target section referred to by the reloc. */ | |
1788 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1789 | { | |
6cdc0ccc | 1790 | Elf_Internal_Sym *isym; |
030d18fb CD |
1791 | |
1792 | /* A local symbol. */ | |
6cdc0ccc AM |
1793 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
1794 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
030d18fb CD |
1795 | } |
1796 | else | |
1797 | { | |
1798 | unsigned long indx; | |
1799 | struct elf_link_hash_entry *h; | |
1800 | ||
1801 | /* An external symbol. */ | |
1802 | indx = ELF32_R_SYM (irel->r_info); | |
1803 | h = elf_sym_hashes (abfd)[indx]; | |
1804 | targetsec = NULL; | |
1805 | /* | |
c6e90b02 TS |
1806 | For some reason, in certain programs, the symbol will |
1807 | not be in the hash table. It seems to happen when you | |
1808 | declare a static table of pointers to const external structures. | |
1809 | In this case, the relocs are relative to data, not | |
1810 | text, so just treating it like an undefined link | |
1811 | should be sufficient. */ | |
030d18fb CD |
1812 | BFD_ASSERT(h != NULL); |
1813 | if (h->root.type == bfd_link_hash_defined | |
1814 | || h->root.type == bfd_link_hash_defweak) | |
1815 | targetsec = h->root.u.def.section; | |
1816 | } | |
1817 | ||
1818 | ||
1819 | /* | |
c6e90b02 TS |
1820 | Set the low bit of the relocation offset if it's a MIPS64 reloc. |
1821 | Relocations will always be on (at least) 32-bit boundaries. */ | |
030d18fb CD |
1822 | |
1823 | bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) + | |
1824 | ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)), | |
1825 | p); | |
1826 | memset (p + 4, 0, 8); | |
1827 | if (targetsec != NULL) | |
1828 | strncpy (p + 4, targetsec->output_section->name, 8); | |
1829 | } | |
1830 | ||
6cdc0ccc AM |
1831 | if (internal_relocs != NULL |
1832 | && elf_section_data (datasec)->relocs != internal_relocs) | |
1833 | free (internal_relocs); | |
1834 | if (isymbuf != NULL | |
1835 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1836 | free (isymbuf); | |
b34976b6 | 1837 | return TRUE; |
030d18fb CD |
1838 | |
1839 | error_return: | |
6cdc0ccc AM |
1840 | if (internal_relocs != NULL |
1841 | && elf_section_data (datasec)->relocs != internal_relocs) | |
1842 | free (internal_relocs); | |
1843 | if (isymbuf != NULL | |
1844 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1845 | free (isymbuf); | |
b34976b6 | 1846 | return FALSE; |
030d18fb CD |
1847 | } |
1848 | \f | |
252b5132 RH |
1849 | /* ECOFF swapping routines. These are used when dealing with the |
1850 | .mdebug section, which is in the ECOFF debugging format. */ | |
be3ccd9c | 1851 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { |
252b5132 RH |
1852 | /* Symbol table magic number. */ |
1853 | magicSym, | |
1854 | /* Alignment of debugging information. E.g., 4. */ | |
1855 | 4, | |
1856 | /* Sizes of external symbolic information. */ | |
1857 | sizeof (struct hdr_ext), | |
1858 | sizeof (struct dnr_ext), | |
1859 | sizeof (struct pdr_ext), | |
1860 | sizeof (struct sym_ext), | |
1861 | sizeof (struct opt_ext), | |
1862 | sizeof (struct fdr_ext), | |
1863 | sizeof (struct rfd_ext), | |
1864 | sizeof (struct ext_ext), | |
1865 | /* Functions to swap in external symbolic data. */ | |
1866 | ecoff_swap_hdr_in, | |
1867 | ecoff_swap_dnr_in, | |
1868 | ecoff_swap_pdr_in, | |
1869 | ecoff_swap_sym_in, | |
1870 | ecoff_swap_opt_in, | |
1871 | ecoff_swap_fdr_in, | |
1872 | ecoff_swap_rfd_in, | |
1873 | ecoff_swap_ext_in, | |
1874 | _bfd_ecoff_swap_tir_in, | |
1875 | _bfd_ecoff_swap_rndx_in, | |
1876 | /* Functions to swap out external symbolic data. */ | |
1877 | ecoff_swap_hdr_out, | |
1878 | ecoff_swap_dnr_out, | |
1879 | ecoff_swap_pdr_out, | |
1880 | ecoff_swap_sym_out, | |
1881 | ecoff_swap_opt_out, | |
1882 | ecoff_swap_fdr_out, | |
1883 | ecoff_swap_rfd_out, | |
1884 | ecoff_swap_ext_out, | |
1885 | _bfd_ecoff_swap_tir_out, | |
1886 | _bfd_ecoff_swap_rndx_out, | |
1887 | /* Function to read in symbolic data. */ | |
1888 | _bfd_mips_elf_read_ecoff_info | |
1889 | }; | |
1890 | \f | |
252b5132 RH |
1891 | #define ELF_ARCH bfd_arch_mips |
1892 | #define ELF_MACHINE_CODE EM_MIPS | |
1893 | ||
1894 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
1895 | a value of 0x1000, and we are compatible. */ | |
1896 | #define ELF_MAXPAGESIZE 0x1000 | |
1897 | ||
b34976b6 AM |
1898 | #define elf_backend_collect TRUE |
1899 | #define elf_backend_type_change_ok TRUE | |
1900 | #define elf_backend_can_gc_sections TRUE | |
3f830999 | 1901 | #define elf_info_to_howto mips_info_to_howto_rela |
252b5132 RH |
1902 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
1903 | #define elf_backend_sym_is_global mips_elf_sym_is_global | |
c6e90b02 | 1904 | #define elf_backend_object_p mips_elf32_object_p |
d75bc93d TS |
1905 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
1906 | #define elf_backend_section_processing _bfd_mips_elf_section_processing | |
103186c6 | 1907 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
252b5132 RH |
1908 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
1909 | #define elf_backend_section_from_bfd_section \ | |
1910 | _bfd_mips_elf_section_from_bfd_section | |
103186c6 | 1911 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
d75bc93d TS |
1912 | #define elf_backend_link_output_symbol_hook \ |
1913 | _bfd_mips_elf_link_output_symbol_hook | |
103186c6 MM |
1914 | #define elf_backend_create_dynamic_sections \ |
1915 | _bfd_mips_elf_create_dynamic_sections | |
1916 | #define elf_backend_check_relocs _bfd_mips_elf_check_relocs | |
1917 | #define elf_backend_adjust_dynamic_symbol \ | |
1918 | _bfd_mips_elf_adjust_dynamic_symbol | |
1919 | #define elf_backend_always_size_sections \ | |
1920 | _bfd_mips_elf_always_size_sections | |
1921 | #define elf_backend_size_dynamic_sections \ | |
1922 | _bfd_mips_elf_size_dynamic_sections | |
1923 | #define elf_backend_relocate_section _bfd_mips_elf_relocate_section | |
103186c6 MM |
1924 | #define elf_backend_finish_dynamic_symbol \ |
1925 | _bfd_mips_elf_finish_dynamic_symbol | |
1926 | #define elf_backend_finish_dynamic_sections \ | |
1927 | _bfd_mips_elf_finish_dynamic_sections | |
d75bc93d TS |
1928 | #define elf_backend_final_write_processing \ |
1929 | _bfd_mips_elf_final_write_processing | |
1930 | #define elf_backend_additional_program_headers \ | |
1931 | _bfd_mips_elf_additional_program_headers | |
1932 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map | |
103186c6 MM |
1933 | #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook |
1934 | #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook | |
8a20f077 UC |
1935 | #define elf_backend_copy_indirect_symbol \ |
1936 | _bfd_mips_elf_copy_indirect_symbol | |
b305ef96 | 1937 | #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol |
c6e90b02 TS |
1938 | #define elf_backend_grok_prstatus elf32_mips_grok_prstatus |
1939 | #define elf_backend_grok_psinfo elf32_mips_grok_psinfo | |
d75bc93d TS |
1940 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap |
1941 | ||
1942 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) | |
1943 | #define elf_backend_plt_header_size 0 | |
1944 | #define elf_backend_may_use_rel_p 1 | |
1945 | #define elf_backend_may_use_rela_p 0 | |
1946 | #define elf_backend_default_use_rela_p 0 | |
b34976b6 | 1947 | #define elf_backend_sign_extend_vma TRUE |
b305ef96 | 1948 | |
d01414a5 | 1949 | #define elf_backend_discard_info _bfd_mips_elf_discard_info |
73d074b4 | 1950 | #define elf_backend_ignore_discarded_relocs \ |
53bfd6b4 | 1951 | _bfd_mips_elf_ignore_discarded_relocs |
c6e90b02 TS |
1952 | #define elf_backend_mips_irix_compat elf32_mips_irix_compat |
1953 | #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto | |
252b5132 RH |
1954 | #define bfd_elf32_bfd_is_local_label_name \ |
1955 | mips_elf_is_local_label_name | |
1956 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line | |
f0abc2a1 | 1957 | #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook |
252b5132 | 1958 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents |
c6e90b02 TS |
1959 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
1960 | _bfd_elf_mips_get_relocated_section_contents | |
252b5132 | 1961 | #define bfd_elf32_bfd_link_hash_table_create \ |
103186c6 MM |
1962 | _bfd_mips_elf_link_hash_table_create |
1963 | #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link | |
252b5132 RH |
1964 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
1965 | _bfd_mips_elf_merge_private_bfd_data | |
1966 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
1967 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
1968 | _bfd_mips_elf_print_private_bfd_data | |
e364195d | 1969 | |
d75bc93d TS |
1970 | /* Support for SGI-ish mips targets. */ |
1971 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec | |
1972 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
1973 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
1974 | #define TARGET_BIG_NAME "elf32-bigmips" | |
1975 | ||
1976 | #include "elf32-target.h" | |
e364195d | 1977 | |
d75bc93d TS |
1978 | /* Support for traditional mips targets. */ |
1979 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ | |
e364195d UC |
1980 | |
1981 | #undef TARGET_LITTLE_SYM | |
1982 | #undef TARGET_LITTLE_NAME | |
1983 | #undef TARGET_BIG_SYM | |
1984 | #undef TARGET_BIG_NAME | |
1985 | ||
1986 | #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec | |
1987 | #define TARGET_LITTLE_NAME "elf32-tradlittlemips" | |
1988 | #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec | |
1989 | #define TARGET_BIG_NAME "elf32-tradbigmips" | |
1990 | ||
c6e90b02 | 1991 | /* Include the target file again for this target. */ |
e364195d | 1992 | #include "elf32-target.h" |