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 | ||
c6e90b02 TS |
50 | static bfd_reloc_status_type mips_elf_hi16_reloc |
51 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
52 | static bfd_reloc_status_type mips_elf_lo16_reloc | |
53 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
54 | static bfd_reloc_status_type mips_elf_got16_reloc | |
55 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
56 | static bfd_reloc_status_type mips_elf_gprel32_reloc | |
57 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
58 | static bfd_reloc_status_type mips32_64bit_reloc |
59 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
60 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
61 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
c6e90b02 | 62 | static reloc_howto_type *mips_elf32_rtype_to_howto |
b34976b6 | 63 | PARAMS ((unsigned int, bfd_boolean)); |
252b5132 | 64 | static void mips_info_to_howto_rel |
947216bf | 65 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
3f830999 | 66 | static void mips_info_to_howto_rela |
947216bf | 67 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 AM |
68 | static bfd_boolean mips_elf_sym_is_global |
69 | PARAMS ((bfd *, asymbol *)); | |
70 | static bfd_boolean mips_elf32_object_p | |
71 | PARAMS ((bfd *)); | |
72 | static bfd_boolean mips_elf_is_local_label_name | |
252b5132 | 73 | PARAMS ((bfd *, const char *)); |
252b5132 RH |
74 | static bfd_reloc_status_type mips16_jump_reloc |
75 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
76 | static bfd_reloc_status_type mips16_gprel_reloc | |
77 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 | 78 | static bfd_reloc_status_type mips_elf_final_gp |
b34976b6 AM |
79 | PARAMS ((bfd *, asymbol *, bfd_boolean, char **, bfd_vma *)); |
80 | static bfd_boolean mips_elf_assign_gp | |
81 | PARAMS ((bfd *, bfd_vma *)); | |
82 | static bfd_boolean elf32_mips_grok_prstatus | |
9e80ff3a | 83 | PARAMS ((bfd *, Elf_Internal_Note *)); |
b34976b6 | 84 | static bfd_boolean elf32_mips_grok_psinfo |
9e80ff3a | 85 | PARAMS ((bfd *, Elf_Internal_Note *)); |
c6e90b02 TS |
86 | static irix_compat_t elf32_mips_irix_compat |
87 | PARAMS ((bfd *)); | |
252b5132 | 88 | |
cb7394f2 TS |
89 | extern const bfd_target bfd_elf32_bigmips_vec; |
90 | extern const bfd_target bfd_elf32_littlemips_vec; | |
adb76a3e | 91 | |
a94a7c1c | 92 | /* Nonzero if ABFD is using the N32 ABI. */ |
a94a7c1c MM |
93 | #define ABI_N32_P(abfd) \ |
94 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
95 | ||
4e8a9624 | 96 | /* Whether we are trying to be compatible with IRIX at all. */ |
a94a7c1c | 97 | #define SGI_COMPAT(abfd) \ |
c6e90b02 | 98 | (elf32_mips_irix_compat (abfd) != ict_none) |
103186c6 | 99 | |
252b5132 RH |
100 | /* The number of local .got entries we reserve. */ |
101 | #define MIPS_RESERVED_GOTNO (2) | |
102 | ||
3f830999 MM |
103 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
104 | from smaller values. Start with zero, widen, *then* decrement. */ | |
105 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
106 | ||
d75bc93d TS |
107 | /* The relocation table used for SHT_REL sections. */ |
108 | ||
109 | static reloc_howto_type elf_mips_howto_table_rel[] = | |
110 | { | |
111 | /* No relocation. */ | |
112 | HOWTO (R_MIPS_NONE, /* type */ | |
113 | 0, /* rightshift */ | |
114 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 0, /* bitsize */ | |
b34976b6 | 116 | FALSE, /* pc_relative */ |
d75bc93d TS |
117 | 0, /* bitpos */ |
118 | complain_overflow_dont, /* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_MIPS_NONE", /* name */ | |
b34976b6 | 121 | FALSE, /* partial_inplace */ |
d75bc93d TS |
122 | 0, /* src_mask */ |
123 | 0, /* dst_mask */ | |
b34976b6 | 124 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
125 | |
126 | /* 16 bit relocation. */ | |
127 | HOWTO (R_MIPS_16, /* type */ | |
128 | 0, /* rightshift */ | |
129 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
130 | 16, /* bitsize */ | |
b34976b6 | 131 | FALSE, /* pc_relative */ |
d75bc93d TS |
132 | 0, /* bitpos */ |
133 | complain_overflow_signed, /* complain_on_overflow */ | |
134 | bfd_elf_generic_reloc, /* special_function */ | |
135 | "R_MIPS_16", /* name */ | |
b34976b6 | 136 | TRUE, /* partial_inplace */ |
d75bc93d TS |
137 | 0x0000ffff, /* src_mask */ |
138 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 139 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
140 | |
141 | /* 32 bit relocation. */ | |
142 | HOWTO (R_MIPS_32, /* type */ | |
143 | 0, /* rightshift */ | |
144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
145 | 32, /* bitsize */ | |
b34976b6 | 146 | FALSE, /* pc_relative */ |
d75bc93d TS |
147 | 0, /* bitpos */ |
148 | complain_overflow_dont, /* complain_on_overflow */ | |
149 | bfd_elf_generic_reloc, /* special_function */ | |
150 | "R_MIPS_32", /* name */ | |
b34976b6 | 151 | TRUE, /* partial_inplace */ |
d75bc93d TS |
152 | 0xffffffff, /* src_mask */ |
153 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 154 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
155 | |
156 | /* 32 bit symbol relative relocation. */ | |
157 | HOWTO (R_MIPS_REL32, /* type */ | |
158 | 0, /* rightshift */ | |
159 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
160 | 32, /* bitsize */ | |
b34976b6 | 161 | FALSE, /* pc_relative */ |
d75bc93d TS |
162 | 0, /* bitpos */ |
163 | complain_overflow_dont, /* complain_on_overflow */ | |
164 | bfd_elf_generic_reloc, /* special_function */ | |
165 | "R_MIPS_REL32", /* name */ | |
b34976b6 | 166 | TRUE, /* partial_inplace */ |
d75bc93d TS |
167 | 0xffffffff, /* src_mask */ |
168 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 169 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
170 | |
171 | /* 26 bit jump address. */ | |
172 | HOWTO (R_MIPS_26, /* type */ | |
173 | 2, /* rightshift */ | |
174 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
175 | 26, /* bitsize */ | |
b34976b6 | 176 | FALSE, /* pc_relative */ |
d75bc93d TS |
177 | 0, /* bitpos */ |
178 | complain_overflow_dont, /* complain_on_overflow */ | |
179 | /* This needs complex overflow | |
180 | detection, because the upper four | |
181 | bits must match the PC + 4. */ | |
182 | bfd_elf_generic_reloc, /* special_function */ | |
183 | "R_MIPS_26", /* name */ | |
b34976b6 | 184 | TRUE, /* partial_inplace */ |
d75bc93d TS |
185 | 0x03ffffff, /* src_mask */ |
186 | 0x03ffffff, /* dst_mask */ | |
b34976b6 | 187 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
188 | |
189 | /* High 16 bits of symbol value. */ | |
190 | HOWTO (R_MIPS_HI16, /* type */ | |
191 | 0, /* rightshift */ | |
192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
193 | 16, /* bitsize */ | |
b34976b6 | 194 | FALSE, /* pc_relative */ |
d75bc93d TS |
195 | 0, /* bitpos */ |
196 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 197 | mips_elf_hi16_reloc, /* special_function */ |
d75bc93d | 198 | "R_MIPS_HI16", /* name */ |
b34976b6 | 199 | TRUE, /* partial_inplace */ |
d75bc93d TS |
200 | 0x0000ffff, /* src_mask */ |
201 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 202 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
203 | |
204 | /* Low 16 bits of symbol value. */ | |
205 | HOWTO (R_MIPS_LO16, /* type */ | |
206 | 0, /* rightshift */ | |
207 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
208 | 16, /* bitsize */ | |
b34976b6 | 209 | FALSE, /* pc_relative */ |
d75bc93d TS |
210 | 0, /* bitpos */ |
211 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 212 | mips_elf_lo16_reloc, /* special_function */ |
d75bc93d | 213 | "R_MIPS_LO16", /* name */ |
b34976b6 | 214 | TRUE, /* partial_inplace */ |
d75bc93d TS |
215 | 0x0000ffff, /* src_mask */ |
216 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 217 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
218 | |
219 | /* GP relative reference. */ | |
220 | HOWTO (R_MIPS_GPREL16, /* type */ | |
221 | 0, /* rightshift */ | |
222 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
223 | 16, /* bitsize */ | |
b34976b6 | 224 | FALSE, /* pc_relative */ |
d75bc93d TS |
225 | 0, /* bitpos */ |
226 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 227 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
d75bc93d | 228 | "R_MIPS_GPREL16", /* name */ |
b34976b6 | 229 | TRUE, /* partial_inplace */ |
d75bc93d TS |
230 | 0x0000ffff, /* src_mask */ |
231 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 232 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
233 | |
234 | /* Reference to literal section. */ | |
235 | HOWTO (R_MIPS_LITERAL, /* type */ | |
236 | 0, /* rightshift */ | |
237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 16, /* bitsize */ | |
b34976b6 | 239 | FALSE, /* pc_relative */ |
d75bc93d TS |
240 | 0, /* bitpos */ |
241 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 242 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
d75bc93d | 243 | "R_MIPS_LITERAL", /* name */ |
b34976b6 | 244 | TRUE, /* partial_inplace */ |
d75bc93d TS |
245 | 0x0000ffff, /* src_mask */ |
246 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 247 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
248 | |
249 | /* Reference to global offset table. */ | |
250 | HOWTO (R_MIPS_GOT16, /* type */ | |
251 | 0, /* rightshift */ | |
252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
253 | 16, /* bitsize */ | |
b34976b6 | 254 | FALSE, /* pc_relative */ |
d75bc93d TS |
255 | 0, /* bitpos */ |
256 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 257 | mips_elf_got16_reloc, /* special_function */ |
d75bc93d | 258 | "R_MIPS_GOT16", /* name */ |
b34976b6 | 259 | TRUE, /* partial_inplace */ |
d75bc93d TS |
260 | 0x0000ffff, /* src_mask */ |
261 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 262 | FALSE), /* pcrel_offset */ |
d75bc93d | 263 | |
7c2be35c TS |
264 | /* 16 bit PC relative reference. Note that the ABI document has a typo |
265 | and claims R_MIPS_PC16 to be not rightshifted, rendering it useless. | |
266 | We do the right thing here. */ | |
d75bc93d | 267 | HOWTO (R_MIPS_PC16, /* type */ |
7c2be35c | 268 | 2, /* rightshift */ |
d75bc93d TS |
269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
270 | 16, /* bitsize */ | |
b34976b6 | 271 | TRUE, /* pc_relative */ |
d75bc93d TS |
272 | 0, /* bitpos */ |
273 | complain_overflow_signed, /* complain_on_overflow */ | |
274 | bfd_elf_generic_reloc, /* special_function */ | |
275 | "R_MIPS_PC16", /* name */ | |
b34976b6 | 276 | TRUE, /* partial_inplace */ |
d75bc93d TS |
277 | 0x0000ffff, /* src_mask */ |
278 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 279 | TRUE), /* pcrel_offset */ |
d75bc93d TS |
280 | |
281 | /* 16 bit call through global offset table. */ | |
282 | HOWTO (R_MIPS_CALL16, /* type */ | |
283 | 0, /* rightshift */ | |
284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 16, /* bitsize */ | |
b34976b6 | 286 | FALSE, /* pc_relative */ |
d75bc93d TS |
287 | 0, /* bitpos */ |
288 | complain_overflow_signed, /* complain_on_overflow */ | |
289 | bfd_elf_generic_reloc, /* special_function */ | |
290 | "R_MIPS_CALL16", /* name */ | |
b34976b6 | 291 | TRUE, /* partial_inplace */ |
d75bc93d TS |
292 | 0x0000ffff, /* src_mask */ |
293 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 294 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
295 | |
296 | /* 32 bit GP relative reference. */ | |
297 | HOWTO (R_MIPS_GPREL32, /* type */ | |
298 | 0, /* rightshift */ | |
299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
300 | 32, /* bitsize */ | |
b34976b6 | 301 | FALSE, /* pc_relative */ |
d75bc93d TS |
302 | 0, /* bitpos */ |
303 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 304 | mips_elf_gprel32_reloc, /* special_function */ |
d75bc93d | 305 | "R_MIPS_GPREL32", /* name */ |
b34976b6 | 306 | TRUE, /* partial_inplace */ |
d75bc93d TS |
307 | 0xffffffff, /* src_mask */ |
308 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 309 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
310 | |
311 | /* The remaining relocs are defined on Irix 5, although they are | |
312 | not defined by the ABI. */ | |
313 | EMPTY_HOWTO (13), | |
314 | EMPTY_HOWTO (14), | |
315 | EMPTY_HOWTO (15), | |
316 | ||
317 | /* A 5 bit shift field. */ | |
318 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
319 | 0, /* rightshift */ | |
320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
321 | 5, /* bitsize */ | |
b34976b6 | 322 | FALSE, /* pc_relative */ |
d75bc93d TS |
323 | 6, /* bitpos */ |
324 | complain_overflow_bitfield, /* complain_on_overflow */ | |
325 | bfd_elf_generic_reloc, /* special_function */ | |
326 | "R_MIPS_SHIFT5", /* name */ | |
b34976b6 | 327 | TRUE, /* partial_inplace */ |
d75bc93d TS |
328 | 0x000007c0, /* src_mask */ |
329 | 0x000007c0, /* dst_mask */ | |
b34976b6 | 330 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
331 | |
332 | /* A 6 bit shift field. */ | |
333 | /* FIXME: This is not handled correctly; a special function is | |
334 | needed to put the most significant bit in the right place. */ | |
335 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
336 | 0, /* rightshift */ | |
337 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 6, /* bitsize */ | |
b34976b6 | 339 | FALSE, /* pc_relative */ |
d75bc93d TS |
340 | 6, /* bitpos */ |
341 | complain_overflow_bitfield, /* complain_on_overflow */ | |
342 | bfd_elf_generic_reloc, /* special_function */ | |
343 | "R_MIPS_SHIFT6", /* name */ | |
b34976b6 | 344 | TRUE, /* partial_inplace */ |
d75bc93d TS |
345 | 0x000007c4, /* src_mask */ |
346 | 0x000007c4, /* dst_mask */ | |
b34976b6 | 347 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
348 | |
349 | /* A 64 bit relocation. */ | |
350 | HOWTO (R_MIPS_64, /* type */ | |
351 | 0, /* rightshift */ | |
352 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
353 | 64, /* bitsize */ | |
b34976b6 | 354 | FALSE, /* pc_relative */ |
d75bc93d TS |
355 | 0, /* bitpos */ |
356 | complain_overflow_dont, /* complain_on_overflow */ | |
357 | mips32_64bit_reloc, /* special_function */ | |
358 | "R_MIPS_64", /* name */ | |
b34976b6 | 359 | TRUE, /* partial_inplace */ |
d75bc93d TS |
360 | MINUS_ONE, /* src_mask */ |
361 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 362 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
363 | |
364 | /* Displacement in the global offset table. */ | |
365 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
366 | 0, /* rightshift */ | |
367 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
368 | 16, /* bitsize */ | |
b34976b6 | 369 | FALSE, /* pc_relative */ |
d75bc93d TS |
370 | 0, /* bitpos */ |
371 | complain_overflow_signed, /* complain_on_overflow */ | |
372 | bfd_elf_generic_reloc, /* special_function */ | |
373 | "R_MIPS_GOT_DISP", /* name */ | |
b34976b6 | 374 | TRUE, /* partial_inplace */ |
d75bc93d TS |
375 | 0x0000ffff, /* src_mask */ |
376 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 377 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
378 | |
379 | /* Displacement to page pointer in the global offset table. */ | |
380 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
381 | 0, /* rightshift */ | |
382 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
383 | 16, /* bitsize */ | |
b34976b6 | 384 | FALSE, /* pc_relative */ |
d75bc93d TS |
385 | 0, /* bitpos */ |
386 | complain_overflow_signed, /* complain_on_overflow */ | |
387 | bfd_elf_generic_reloc, /* special_function */ | |
388 | "R_MIPS_GOT_PAGE", /* name */ | |
b34976b6 | 389 | TRUE, /* partial_inplace */ |
d75bc93d TS |
390 | 0x0000ffff, /* src_mask */ |
391 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 392 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
393 | |
394 | /* Offset from page pointer in the global offset table. */ | |
395 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 16, /* bitsize */ | |
b34976b6 | 399 | FALSE, /* pc_relative */ |
d75bc93d TS |
400 | 0, /* bitpos */ |
401 | complain_overflow_signed, /* complain_on_overflow */ | |
402 | bfd_elf_generic_reloc, /* special_function */ | |
403 | "R_MIPS_GOT_OFST", /* name */ | |
b34976b6 | 404 | TRUE, /* partial_inplace */ |
d75bc93d TS |
405 | 0x0000ffff, /* src_mask */ |
406 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 407 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
408 | |
409 | /* High 16 bits of displacement in global offset table. */ | |
410 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
411 | 0, /* rightshift */ | |
412 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
413 | 16, /* bitsize */ | |
b34976b6 | 414 | FALSE, /* pc_relative */ |
d75bc93d TS |
415 | 0, /* bitpos */ |
416 | complain_overflow_dont, /* complain_on_overflow */ | |
417 | bfd_elf_generic_reloc, /* special_function */ | |
418 | "R_MIPS_GOT_HI16", /* name */ | |
b34976b6 | 419 | TRUE, /* partial_inplace */ |
d75bc93d TS |
420 | 0x0000ffff, /* src_mask */ |
421 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 422 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
423 | |
424 | /* Low 16 bits of displacement in global offset table. */ | |
425 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
426 | 0, /* rightshift */ | |
427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
428 | 16, /* bitsize */ | |
b34976b6 | 429 | FALSE, /* pc_relative */ |
d75bc93d TS |
430 | 0, /* bitpos */ |
431 | complain_overflow_dont, /* complain_on_overflow */ | |
432 | bfd_elf_generic_reloc, /* special_function */ | |
433 | "R_MIPS_GOT_LO16", /* name */ | |
b34976b6 | 434 | TRUE, /* partial_inplace */ |
d75bc93d TS |
435 | 0x0000ffff, /* src_mask */ |
436 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 437 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
438 | |
439 | /* 64 bit subtraction. Used in the N32 ABI. */ | |
440 | HOWTO (R_MIPS_SUB, /* type */ | |
441 | 0, /* rightshift */ | |
442 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
443 | 64, /* bitsize */ | |
b34976b6 | 444 | FALSE, /* pc_relative */ |
d75bc93d TS |
445 | 0, /* bitpos */ |
446 | complain_overflow_dont, /* complain_on_overflow */ | |
447 | bfd_elf_generic_reloc, /* special_function */ | |
448 | "R_MIPS_SUB", /* name */ | |
b34976b6 | 449 | TRUE, /* partial_inplace */ |
d75bc93d TS |
450 | MINUS_ONE, /* src_mask */ |
451 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 452 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
453 | |
454 | /* Used to cause the linker to insert and delete instructions? */ | |
455 | EMPTY_HOWTO (R_MIPS_INSERT_A), | |
456 | EMPTY_HOWTO (R_MIPS_INSERT_B), | |
457 | EMPTY_HOWTO (R_MIPS_DELETE), | |
458 | ||
459 | /* Get the higher value of a 64 bit addend. */ | |
460 | HOWTO (R_MIPS_HIGHER, /* type */ | |
461 | 0, /* rightshift */ | |
462 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
463 | 16, /* bitsize */ | |
b34976b6 | 464 | FALSE, /* pc_relative */ |
d75bc93d TS |
465 | 0, /* bitpos */ |
466 | complain_overflow_dont, /* complain_on_overflow */ | |
467 | bfd_elf_generic_reloc, /* special_function */ | |
468 | "R_MIPS_HIGHER", /* name */ | |
b34976b6 | 469 | TRUE, /* partial_inplace */ |
d75bc93d TS |
470 | 0x0000ffff, /* src_mask */ |
471 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 472 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
473 | |
474 | /* Get the highest value of a 64 bit addend. */ | |
475 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
476 | 0, /* rightshift */ | |
477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 16, /* bitsize */ | |
b34976b6 | 479 | FALSE, /* pc_relative */ |
d75bc93d TS |
480 | 0, /* bitpos */ |
481 | complain_overflow_dont, /* complain_on_overflow */ | |
482 | bfd_elf_generic_reloc, /* special_function */ | |
483 | "R_MIPS_HIGHEST", /* name */ | |
b34976b6 | 484 | TRUE, /* partial_inplace */ |
d75bc93d TS |
485 | 0x0000ffff, /* src_mask */ |
486 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 487 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
488 | |
489 | /* High 16 bits of displacement in global offset table. */ | |
490 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
491 | 0, /* rightshift */ | |
492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
493 | 16, /* bitsize */ | |
b34976b6 | 494 | FALSE, /* pc_relative */ |
d75bc93d TS |
495 | 0, /* bitpos */ |
496 | complain_overflow_dont, /* complain_on_overflow */ | |
497 | bfd_elf_generic_reloc, /* special_function */ | |
498 | "R_MIPS_CALL_HI16", /* name */ | |
b34976b6 | 499 | TRUE, /* partial_inplace */ |
d75bc93d TS |
500 | 0x0000ffff, /* src_mask */ |
501 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 502 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
503 | |
504 | /* Low 16 bits of displacement in global offset table. */ | |
505 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
506 | 0, /* rightshift */ | |
507 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
508 | 16, /* bitsize */ | |
b34976b6 | 509 | FALSE, /* pc_relative */ |
d75bc93d TS |
510 | 0, /* bitpos */ |
511 | complain_overflow_dont, /* complain_on_overflow */ | |
512 | bfd_elf_generic_reloc, /* special_function */ | |
513 | "R_MIPS_CALL_LO16", /* name */ | |
b34976b6 | 514 | TRUE, /* partial_inplace */ |
d75bc93d TS |
515 | 0x0000ffff, /* src_mask */ |
516 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 517 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
518 | |
519 | /* Section displacement. */ | |
520 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
521 | 0, /* rightshift */ | |
522 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
523 | 32, /* bitsize */ | |
b34976b6 | 524 | FALSE, /* pc_relative */ |
d75bc93d TS |
525 | 0, /* bitpos */ |
526 | complain_overflow_dont, /* complain_on_overflow */ | |
527 | bfd_elf_generic_reloc, /* special_function */ | |
528 | "R_MIPS_SCN_DISP", /* name */ | |
b34976b6 | 529 | TRUE, /* partial_inplace */ |
d75bc93d TS |
530 | 0xffffffff, /* src_mask */ |
531 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 532 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
533 | |
534 | EMPTY_HOWTO (R_MIPS_REL16), | |
535 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
536 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
537 | EMPTY_HOWTO (R_MIPS_RELGOT), | |
538 | ||
539 | /* Protected jump conversion. This is an optimization hint. No | |
540 | relocation is required for correctness. */ | |
541 | HOWTO (R_MIPS_JALR, /* type */ | |
542 | 0, /* rightshift */ | |
543 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
544 | 32, /* bitsize */ | |
b34976b6 | 545 | FALSE, /* pc_relative */ |
d75bc93d TS |
546 | 0, /* bitpos */ |
547 | complain_overflow_dont, /* complain_on_overflow */ | |
548 | bfd_elf_generic_reloc, /* special_function */ | |
549 | "R_MIPS_JALR", /* name */ | |
b34976b6 | 550 | FALSE, /* partial_inplace */ |
d75bc93d TS |
551 | 0x00000000, /* src_mask */ |
552 | 0x00000000, /* dst_mask */ | |
b34976b6 | 553 | FALSE), /* pcrel_offset */ |
d75bc93d TS |
554 | }; |
555 | ||
c6e90b02 TS |
556 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This |
557 | is a hack to make the linker think that we need 64 bit values. */ | |
558 | static reloc_howto_type elf_mips_ctor64_howto = | |
559 | HOWTO (R_MIPS_64, /* type */ | |
252b5132 | 560 | 0, /* rightshift */ |
c6e90b02 | 561 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 562 | 32, /* bitsize */ |
b34976b6 | 563 | FALSE, /* pc_relative */ |
252b5132 | 564 | 0, /* bitpos */ |
c6e90b02 TS |
565 | complain_overflow_signed, /* complain_on_overflow */ |
566 | mips32_64bit_reloc, /* special_function */ | |
567 | "R_MIPS_64", /* name */ | |
b34976b6 | 568 | TRUE, /* partial_inplace */ |
c6e90b02 | 569 | 0xffffffff, /* src_mask */ |
252b5132 | 570 | 0xffffffff, /* dst_mask */ |
b34976b6 | 571 | FALSE); /* pcrel_offset */ |
252b5132 | 572 | |
c6e90b02 TS |
573 | /* The reloc used for the mips16 jump instruction. */ |
574 | static reloc_howto_type elf_mips16_jump_howto = | |
575 | HOWTO (R_MIPS16_26, /* type */ | |
252b5132 RH |
576 | 2, /* rightshift */ |
577 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
578 | 26, /* bitsize */ | |
b34976b6 | 579 | FALSE, /* pc_relative */ |
252b5132 RH |
580 | 0, /* bitpos */ |
581 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
582 | /* This needs complex overflow |
583 | detection, because the upper four | |
584 | bits must match the PC. */ | |
585 | mips16_jump_reloc, /* special_function */ | |
586 | "R_MIPS16_26", /* name */ | |
b34976b6 | 587 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
588 | 0x3ffffff, /* src_mask */ |
589 | 0x3ffffff, /* dst_mask */ | |
b34976b6 | 590 | FALSE); /* pcrel_offset */ |
252b5132 | 591 | |
c6e90b02 TS |
592 | /* The reloc used for the mips16 gprel instruction. */ |
593 | static reloc_howto_type elf_mips16_gprel_howto = | |
594 | HOWTO (R_MIPS16_GPREL, /* type */ | |
252b5132 RH |
595 | 0, /* rightshift */ |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 16, /* bitsize */ | |
b34976b6 | 598 | FALSE, /* pc_relative */ |
252b5132 | 599 | 0, /* bitpos */ |
c6e90b02 TS |
600 | complain_overflow_signed, /* complain_on_overflow */ |
601 | mips16_gprel_reloc, /* special_function */ | |
602 | "R_MIPS16_GPREL", /* name */ | |
b34976b6 | 603 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
604 | 0x07ff001f, /* src_mask */ |
605 | 0x07ff001f, /* dst_mask */ | |
b34976b6 | 606 | FALSE); /* pcrel_offset */ |
252b5132 | 607 | |
c6e90b02 TS |
608 | /* GNU extensions for embedded-pic. */ |
609 | /* High 16 bits of symbol value, pc-relative. */ | |
610 | static reloc_howto_type elf_mips_gnu_rel_hi16 = | |
611 | HOWTO (R_MIPS_GNU_REL_HI16, /* type */ | |
252b5132 RH |
612 | 0, /* rightshift */ |
613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
614 | 16, /* bitsize */ | |
b34976b6 | 615 | TRUE, /* pc_relative */ |
252b5132 RH |
616 | 0, /* bitpos */ |
617 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
618 | mips_elf_hi16_reloc, /* special_function */ |
619 | "R_MIPS_GNU_REL_HI16", /* name */ | |
b34976b6 | 620 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
621 | 0xffff, /* src_mask */ |
622 | 0xffff, /* dst_mask */ | |
b34976b6 | 623 | TRUE); /* pcrel_offset */ |
252b5132 | 624 | |
c6e90b02 TS |
625 | /* Low 16 bits of symbol value, pc-relative. */ |
626 | static reloc_howto_type elf_mips_gnu_rel_lo16 = | |
627 | HOWTO (R_MIPS_GNU_REL_LO16, /* type */ | |
252b5132 RH |
628 | 0, /* rightshift */ |
629 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
630 | 16, /* bitsize */ | |
b34976b6 | 631 | TRUE, /* pc_relative */ |
252b5132 | 632 | 0, /* bitpos */ |
c6e90b02 TS |
633 | complain_overflow_dont, /* complain_on_overflow */ |
634 | mips_elf_lo16_reloc, /* special_function */ | |
635 | "R_MIPS_GNU_REL_LO16", /* name */ | |
b34976b6 | 636 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
637 | 0xffff, /* src_mask */ |
638 | 0xffff, /* dst_mask */ | |
b34976b6 | 639 | TRUE); /* pcrel_offset */ |
252b5132 | 640 | |
c6e90b02 TS |
641 | /* 16 bit offset for pc-relative branches. */ |
642 | static reloc_howto_type elf_mips_gnu_rel16_s2 = | |
643 | HOWTO (R_MIPS_GNU_REL16_S2, /* type */ | |
644 | 2, /* rightshift */ | |
252b5132 RH |
645 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
646 | 16, /* bitsize */ | |
b34976b6 | 647 | TRUE, /* pc_relative */ |
252b5132 RH |
648 | 0, /* bitpos */ |
649 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 TS |
650 | bfd_elf_generic_reloc, /* special_function */ |
651 | "R_MIPS_GNU_REL16_S2", /* name */ | |
b34976b6 | 652 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
653 | 0xffff, /* src_mask */ |
654 | 0xffff, /* dst_mask */ | |
b34976b6 | 655 | TRUE); /* pcrel_offset */ |
252b5132 | 656 | |
c6e90b02 TS |
657 | /* 64 bit pc-relative. */ |
658 | static reloc_howto_type elf_mips_gnu_pcrel64 = | |
659 | HOWTO (R_MIPS_PC64, /* type */ | |
252b5132 | 660 | 0, /* rightshift */ |
c6e90b02 TS |
661 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
662 | 64, /* bitsize */ | |
b34976b6 | 663 | TRUE, /* pc_relative */ |
252b5132 RH |
664 | 0, /* bitpos */ |
665 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 TS |
666 | bfd_elf_generic_reloc, /* special_function */ |
667 | "R_MIPS_PC64", /* name */ | |
b34976b6 | 668 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
669 | MINUS_ONE, /* src_mask */ |
670 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 671 | TRUE); /* pcrel_offset */ |
252b5132 | 672 | |
c6e90b02 TS |
673 | /* 32 bit pc-relative. */ |
674 | static reloc_howto_type elf_mips_gnu_pcrel32 = | |
675 | HOWTO (R_MIPS_PC32, /* type */ | |
252b5132 RH |
676 | 0, /* rightshift */ |
677 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 678 | 32, /* bitsize */ |
b34976b6 | 679 | TRUE, /* pc_relative */ |
252b5132 RH |
680 | 0, /* bitpos */ |
681 | complain_overflow_signed, /* complain_on_overflow */ | |
682 | bfd_elf_generic_reloc, /* special_function */ | |
c6e90b02 | 683 | "R_MIPS_PC32", /* name */ |
b34976b6 | 684 | TRUE, /* partial_inplace */ |
c6e90b02 TS |
685 | 0xffffffff, /* src_mask */ |
686 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 687 | TRUE); /* pcrel_offset */ |
252b5132 | 688 | |
c6e90b02 TS |
689 | /* GNU extension to record C++ vtable hierarchy */ |
690 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = | |
691 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ | |
252b5132 RH |
692 | 0, /* rightshift */ |
693 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 694 | 0, /* bitsize */ |
b34976b6 | 695 | FALSE, /* pc_relative */ |
252b5132 | 696 | 0, /* bitpos */ |
c6e90b02 TS |
697 | complain_overflow_dont, /* complain_on_overflow */ |
698 | NULL, /* special_function */ | |
699 | "R_MIPS_GNU_VTINHERIT", /* name */ | |
b34976b6 | 700 | FALSE, /* partial_inplace */ |
d75bc93d | 701 | 0, /* src_mask */ |
c6e90b02 | 702 | 0, /* dst_mask */ |
b34976b6 | 703 | FALSE); /* pcrel_offset */ |
252b5132 | 704 | |
c6e90b02 TS |
705 | /* GNU extension to record C++ vtable member usage */ |
706 | static reloc_howto_type elf_mips_gnu_vtentry_howto = | |
707 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ | |
252b5132 RH |
708 | 0, /* rightshift */ |
709 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 710 | 0, /* bitsize */ |
b34976b6 | 711 | FALSE, /* pc_relative */ |
252b5132 RH |
712 | 0, /* bitpos */ |
713 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
714 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
715 | "R_MIPS_GNU_VTENTRY", /* name */ | |
b34976b6 | 716 | FALSE, /* partial_inplace */ |
d75bc93d | 717 | 0, /* src_mask */ |
c6e90b02 | 718 | 0, /* dst_mask */ |
b34976b6 | 719 | FALSE); /* pcrel_offset */ |
252b5132 RH |
720 | |
721 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination | |
c6e90b02 TS |
722 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to |
723 | the HI16. Here we just save the information we need; we do the | |
724 | actual relocation when we see the LO16. | |
c6142e5d | 725 | |
c6e90b02 TS |
726 | MIPS ELF requires that the LO16 immediately follow the HI16. As a |
727 | GNU extension, for non-pc-relative relocations, we permit an | |
728 | arbitrary number of HI16 relocs to be associated with a single LO16 | |
729 | reloc. This extension permits gcc to output the HI and LO relocs | |
730 | itself. | |
c6142e5d | 731 | |
c6e90b02 TS |
732 | This cannot be done for PC-relative relocations because both the HI16 |
733 | and LO16 parts of the relocations must be done relative to the LO16 | |
734 | part, and there can be carry to or borrow from the HI16 part. */ | |
103186c6 | 735 | |
c6e90b02 | 736 | struct mips_hi16 |
103186c6 | 737 | { |
c6e90b02 TS |
738 | struct mips_hi16 *next; |
739 | bfd_byte *addr; | |
740 | bfd_vma addend; | |
741 | }; | |
be3ccd9c | 742 | |
c6e90b02 | 743 | /* FIXME: This should not be a static variable. */ |
103186c6 | 744 | |
c6e90b02 | 745 | static struct mips_hi16 *mips_hi16_list; |
252b5132 | 746 | |
c6e90b02 TS |
747 | static bfd_reloc_status_type |
748 | mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
749 | output_bfd, error_message) | |
750 | bfd *abfd ATTRIBUTE_UNUSED; | |
751 | arelent *reloc_entry; | |
752 | asymbol *symbol; | |
753 | PTR data; | |
754 | asection *input_section; | |
755 | bfd *output_bfd; | |
756 | char **error_message; | |
252b5132 | 757 | { |
c6e90b02 TS |
758 | bfd_reloc_status_type ret; |
759 | bfd_vma relocation; | |
760 | struct mips_hi16 *n; | |
252b5132 | 761 | |
cb7394f2 | 762 | /* If we're relocating, and this is an external symbol, we don't want |
c6e90b02 TS |
763 | to change anything. */ |
764 | if (output_bfd != (bfd *) NULL | |
765 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
766 | && reloc_entry->addend == 0) | |
252b5132 | 767 | { |
c6e90b02 TS |
768 | reloc_entry->address += input_section->output_offset; |
769 | return bfd_reloc_ok; | |
252b5132 | 770 | } |
252b5132 | 771 | |
c6e90b02 | 772 | ret = bfd_reloc_ok; |
252b5132 | 773 | |
c6e90b02 TS |
774 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
775 | { | |
b34976b6 | 776 | bfd_boolean relocateable; |
c6e90b02 | 777 | bfd_vma gp; |
252b5132 | 778 | |
c6e90b02 TS |
779 | if (ret == bfd_reloc_undefined) |
780 | abort (); | |
252b5132 | 781 | |
c6e90b02 | 782 | if (output_bfd != NULL) |
b34976b6 | 783 | relocateable = TRUE; |
252b5132 | 784 | else |
252b5132 | 785 | { |
b34976b6 | 786 | relocateable = FALSE; |
c6e90b02 | 787 | output_bfd = symbol->section->output_section->owner; |
252b5132 RH |
788 | } |
789 | ||
c6e90b02 TS |
790 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
791 | error_message, &gp); | |
792 | if (ret != bfd_reloc_ok) | |
793 | return ret; | |
252b5132 | 794 | |
c6e90b02 | 795 | relocation = gp - reloc_entry->address; |
252b5132 RH |
796 | } |
797 | else | |
798 | { | |
c6e90b02 TS |
799 | if (bfd_is_und_section (symbol->section) |
800 | && output_bfd == (bfd *) NULL) | |
801 | ret = bfd_reloc_undefined; | |
252b5132 | 802 | |
c6e90b02 TS |
803 | if (bfd_is_com_section (symbol->section)) |
804 | relocation = 0; | |
252b5132 | 805 | else |
c6e90b02 TS |
806 | relocation = symbol->value; |
807 | } | |
252b5132 | 808 | |
c6e90b02 TS |
809 | relocation += symbol->section->output_section->vma; |
810 | relocation += symbol->section->output_offset; | |
811 | relocation += reloc_entry->addend; | |
9117d219 | 812 | |
c6e90b02 TS |
813 | if (reloc_entry->address > input_section->_cooked_size) |
814 | return bfd_reloc_outofrange; | |
9117d219 | 815 | |
c6e90b02 TS |
816 | /* Save the information, and let LO16 do the actual relocation. */ |
817 | n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n); | |
818 | if (n == NULL) | |
819 | return bfd_reloc_outofrange; | |
820 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
821 | n->addend = relocation; | |
822 | n->next = mips_hi16_list; | |
823 | mips_hi16_list = n; | |
252b5132 | 824 | |
c6e90b02 TS |
825 | if (output_bfd != (bfd *) NULL) |
826 | reloc_entry->address += input_section->output_offset; | |
252b5132 | 827 | |
c6e90b02 | 828 | return ret; |
252b5132 RH |
829 | } |
830 | ||
c6e90b02 TS |
831 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit |
832 | inplace relocation; this function exists in order to do the | |
833 | R_MIPS_HI16 relocation described above. */ | |
252b5132 | 834 | |
c6e90b02 TS |
835 | static bfd_reloc_status_type |
836 | mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
837 | output_bfd, error_message) | |
252b5132 | 838 | bfd *abfd; |
c6e90b02 TS |
839 | arelent *reloc_entry; |
840 | asymbol *symbol; | |
841 | PTR data; | |
842 | asection *input_section; | |
843 | bfd *output_bfd; | |
844 | char **error_message; | |
252b5132 | 845 | { |
c6e90b02 | 846 | arelent gp_disp_relent; |
252b5132 | 847 | |
c6e90b02 | 848 | if (mips_hi16_list != NULL) |
252b5132 | 849 | { |
c6e90b02 | 850 | struct mips_hi16 *l; |
252b5132 | 851 | |
c6e90b02 TS |
852 | l = mips_hi16_list; |
853 | while (l != NULL) | |
854 | { | |
855 | unsigned long insn; | |
856 | unsigned long val; | |
857 | unsigned long vallo; | |
858 | struct mips_hi16 *next; | |
252b5132 | 859 | |
c6e90b02 TS |
860 | /* Do the HI16 relocation. Note that we actually don't need |
861 | to know anything about the LO16 itself, except where to | |
862 | find the low 16 bits of the addend needed by the LO16. */ | |
863 | insn = bfd_get_32 (abfd, l->addr); | |
864 | vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 865 | |
c6e90b02 TS |
866 | /* The low order 16 bits are always treated as a signed |
867 | value. */ | |
868 | vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000; | |
869 | val = ((insn & 0xffff) << 16) + vallo; | |
870 | val += l->addend; | |
252b5132 | 871 | |
c6e90b02 TS |
872 | /* If PC-relative, we need to subtract out the address of the LO |
873 | half of the HI/LO. (The actual relocation is relative | |
874 | to that instruction.) */ | |
875 | if (reloc_entry->howto->pc_relative) | |
876 | val -= reloc_entry->address; | |
252b5132 | 877 | |
c6e90b02 TS |
878 | /* At this point, "val" has the value of the combined HI/LO |
879 | pair. If the low order 16 bits (which will be used for | |
880 | the LO16 insn) are negative, then we will need an | |
881 | adjustment for the high order 16 bits. */ | |
882 | val += 0x8000; | |
883 | val = (val >> 16) & 0xffff; | |
252b5132 | 884 | |
c6e90b02 TS |
885 | insn &= ~ (bfd_vma) 0xffff; |
886 | insn |= val; | |
887 | bfd_put_32 (abfd, (bfd_vma) insn, l->addr); | |
8a20f077 | 888 | |
c6e90b02 TS |
889 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
890 | { | |
891 | gp_disp_relent = *reloc_entry; | |
892 | reloc_entry = &gp_disp_relent; | |
893 | reloc_entry->addend = l->addend; | |
894 | } | |
8a20f077 | 895 | |
c6e90b02 TS |
896 | next = l->next; |
897 | free (l); | |
898 | l = next; | |
899 | } | |
252b5132 | 900 | |
c6e90b02 | 901 | mips_hi16_list = NULL; |
43917054 | 902 | } |
c6e90b02 | 903 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
252b5132 | 904 | { |
c6e90b02 TS |
905 | bfd_reloc_status_type ret; |
906 | bfd_vma gp, relocation; | |
252b5132 | 907 | |
c6e90b02 | 908 | /* FIXME: Does this case ever occur? */ |
252b5132 | 909 | |
b34976b6 | 910 | ret = mips_elf_final_gp (output_bfd, symbol, TRUE, error_message, &gp); |
c6e90b02 TS |
911 | if (ret != bfd_reloc_ok) |
912 | return ret; | |
252b5132 | 913 | |
c6e90b02 TS |
914 | relocation = gp - reloc_entry->address; |
915 | relocation += symbol->section->output_section->vma; | |
916 | relocation += symbol->section->output_offset; | |
917 | relocation += reloc_entry->addend; | |
252b5132 | 918 | |
c6e90b02 TS |
919 | if (reloc_entry->address > input_section->_cooked_size) |
920 | return bfd_reloc_outofrange; | |
252b5132 | 921 | |
c6e90b02 TS |
922 | gp_disp_relent = *reloc_entry; |
923 | reloc_entry = &gp_disp_relent; | |
924 | reloc_entry->addend = relocation - 4; | |
252b5132 RH |
925 | } |
926 | ||
c6e90b02 TS |
927 | /* Now do the LO16 reloc in the usual way. */ |
928 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
929 | input_section, output_bfd, error_message); | |
252b5132 RH |
930 | } |
931 | ||
c6e90b02 TS |
932 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
933 | table used for PIC code. If the symbol is an external symbol, the | |
934 | instruction is modified to contain the offset of the appropriate | |
935 | entry in the global offset table. If the symbol is a section | |
936 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
937 | addends are combined to form the real addend against the section | |
938 | symbol; the GOT16 is modified to contain the offset of an entry in | |
939 | the global offset table, and the LO16 is modified to offset it | |
940 | appropriately. Thus an offset larger than 16 bits requires a | |
941 | modified value in the global offset table. | |
252b5132 | 942 | |
c6e90b02 TS |
943 | This implementation suffices for the assembler, but the linker does |
944 | not yet know how to create global offset tables. */ | |
252b5132 | 945 | |
c6e90b02 TS |
946 | static bfd_reloc_status_type |
947 | mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
948 | output_bfd, error_message) | |
949 | bfd *abfd; | |
950 | arelent *reloc_entry; | |
951 | asymbol *symbol; | |
952 | PTR data; | |
953 | asection *input_section; | |
252b5132 | 954 | bfd *output_bfd; |
c6e90b02 | 955 | char **error_message; |
252b5132 | 956 | { |
cb7394f2 | 957 | /* If we're relocating, and this is an external symbol, we don't want |
c6e90b02 TS |
958 | to change anything. */ |
959 | if (output_bfd != (bfd *) NULL | |
960 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
961 | && reloc_entry->addend == 0) | |
962 | { | |
963 | reloc_entry->address += input_section->output_offset; | |
964 | return bfd_reloc_ok; | |
965 | } | |
252b5132 | 966 | |
c6e90b02 TS |
967 | /* If we're relocating, and this is a local symbol, we can handle it |
968 | just like HI16. */ | |
969 | if (output_bfd != (bfd *) NULL | |
970 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
971 | return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
972 | input_section, output_bfd, error_message); | |
252b5132 | 973 | |
c6e90b02 | 974 | abort (); |
252b5132 RH |
975 | } |
976 | ||
b34976b6 | 977 | /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a |
c6e90b02 | 978 | dangerous relocation. */ |
252b5132 | 979 | |
b34976b6 | 980 | static bfd_boolean |
c6e90b02 TS |
981 | mips_elf_assign_gp (output_bfd, pgp) |
982 | bfd *output_bfd; | |
983 | bfd_vma *pgp; | |
252b5132 | 984 | { |
c6e90b02 TS |
985 | unsigned int count; |
986 | asymbol **sym; | |
987 | unsigned int i; | |
e92d460e | 988 | |
c6e90b02 TS |
989 | /* If we've already figured out what GP will be, just return it. */ |
990 | *pgp = _bfd_get_gp_value (output_bfd); | |
991 | if (*pgp) | |
b34976b6 | 992 | return TRUE; |
c6e90b02 TS |
993 | |
994 | count = bfd_get_symcount (output_bfd); | |
995 | sym = bfd_get_outsymbols (output_bfd); | |
252b5132 | 996 | |
c6e90b02 TS |
997 | /* The linker script will have created a symbol named `_gp' with the |
998 | appropriate value. */ | |
999 | if (sym == (asymbol **) NULL) | |
1000 | i = count; | |
1001 | else | |
252b5132 | 1002 | { |
c6e90b02 TS |
1003 | for (i = 0; i < count; i++, sym++) |
1004 | { | |
1005 | register const char *name; | |
1006 | ||
1007 | name = bfd_asymbol_name (*sym); | |
1008 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1009 | { | |
1010 | *pgp = bfd_asymbol_value (*sym); | |
1011 | _bfd_set_gp_value (output_bfd, *pgp); | |
1012 | break; | |
1013 | } | |
1014 | } | |
252b5132 RH |
1015 | } |
1016 | ||
c6e90b02 | 1017 | if (i >= count) |
252b5132 | 1018 | { |
c6e90b02 TS |
1019 | /* Only get the error once. */ |
1020 | *pgp = 4; | |
1021 | _bfd_set_gp_value (output_bfd, *pgp); | |
b34976b6 | 1022 | return FALSE; |
252b5132 RH |
1023 | } |
1024 | ||
b34976b6 | 1025 | return TRUE; |
252b5132 RH |
1026 | } |
1027 | ||
c6e90b02 TS |
1028 | /* We have to figure out the gp value, so that we can adjust the |
1029 | symbol value correctly. We look up the symbol _gp in the output | |
1030 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1031 | target data. We don't need to adjust the symbol value for an | |
1032 | external symbol if we are producing relocateable output. */ | |
252b5132 | 1033 | |
c6e90b02 TS |
1034 | static bfd_reloc_status_type |
1035 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) | |
252b5132 | 1036 | bfd *output_bfd; |
c6e90b02 | 1037 | asymbol *symbol; |
b34976b6 | 1038 | bfd_boolean relocateable; |
c6e90b02 TS |
1039 | char **error_message; |
1040 | bfd_vma *pgp; | |
252b5132 | 1041 | { |
c6e90b02 TS |
1042 | if (bfd_is_und_section (symbol->section) |
1043 | && ! relocateable) | |
252b5132 | 1044 | { |
c6e90b02 TS |
1045 | *pgp = 0; |
1046 | return bfd_reloc_undefined; | |
252b5132 RH |
1047 | } |
1048 | ||
c6e90b02 TS |
1049 | *pgp = _bfd_get_gp_value (output_bfd); |
1050 | if (*pgp == 0 | |
1051 | && (! relocateable | |
1052 | || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
252b5132 | 1053 | { |
c6e90b02 | 1054 | if (relocateable) |
252b5132 | 1055 | { |
c6e90b02 TS |
1056 | /* Make up a value. */ |
1057 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1058 | _bfd_set_gp_value (output_bfd, *pgp); | |
252b5132 | 1059 | } |
c6e90b02 | 1060 | else if (!mips_elf_assign_gp (output_bfd, pgp)) |
252b5132 | 1061 | { |
c6e90b02 TS |
1062 | *error_message = |
1063 | (char *) _("GP relative relocation when _gp not defined"); | |
1064 | return bfd_reloc_dangerous; | |
252b5132 | 1065 | } |
252b5132 RH |
1066 | } |
1067 | ||
c6e90b02 TS |
1068 | return bfd_reloc_ok; |
1069 | } | |
252b5132 | 1070 | |
c6e90b02 TS |
1071 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
1072 | become the offset from the gp register. This function also handles | |
1073 | R_MIPS_LITERAL relocations, although those can be handled more | |
1074 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
1075 | merged. */ | |
252b5132 | 1076 | |
c6e90b02 TS |
1077 | bfd_reloc_status_type |
1078 | _bfd_mips_elf32_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1079 | output_bfd, error_message) | |
1080 | bfd *abfd; | |
1081 | arelent *reloc_entry; | |
1082 | asymbol *symbol; | |
1083 | PTR data; | |
1084 | asection *input_section; | |
1085 | bfd *output_bfd; | |
1086 | char **error_message; | |
1087 | { | |
b34976b6 | 1088 | bfd_boolean relocateable; |
c6e90b02 TS |
1089 | bfd_reloc_status_type ret; |
1090 | bfd_vma gp; | |
252b5132 | 1091 | |
c6e90b02 TS |
1092 | /* If we're relocating, and this is an external symbol with no |
1093 | addend, we don't want to change anything. We will only have an | |
1094 | addend if this is a newly created reloc, not read from an ELF | |
1095 | file. */ | |
1096 | if (output_bfd != (bfd *) NULL | |
1097 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1098 | && reloc_entry->addend == 0) | |
1099 | { | |
1100 | reloc_entry->address += input_section->output_offset; | |
1101 | return bfd_reloc_ok; | |
1102 | } | |
252b5132 | 1103 | |
c6e90b02 | 1104 | if (output_bfd != (bfd *) NULL) |
b34976b6 | 1105 | relocateable = TRUE; |
c6e90b02 TS |
1106 | else |
1107 | { | |
b34976b6 | 1108 | relocateable = FALSE; |
c6e90b02 TS |
1109 | output_bfd = symbol->section->output_section->owner; |
1110 | } | |
252b5132 | 1111 | |
c6e90b02 TS |
1112 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
1113 | &gp); | |
1114 | if (ret != bfd_reloc_ok) | |
1115 | return ret; | |
252b5132 | 1116 | |
c6e90b02 TS |
1117 | return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
1118 | input_section, relocateable, | |
1119 | data, gp); | |
1120 | } | |
252b5132 | 1121 | |
cb7394f2 TS |
1122 | /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must |
1123 | become the offset from the gp register. */ | |
252b5132 | 1124 | |
b34976b6 AM |
1125 | static bfd_reloc_status_type gprel32_with_gp |
1126 | PARAMS ((bfd *, asymbol *, arelent *, asection *, bfd_boolean, PTR, | |
1127 | bfd_vma)); | |
252b5132 | 1128 | |
c6e90b02 TS |
1129 | static bfd_reloc_status_type |
1130 | mips_elf_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1131 | output_bfd, error_message) | |
1132 | bfd *abfd; | |
1133 | arelent *reloc_entry; | |
1134 | asymbol *symbol; | |
1135 | PTR data; | |
1136 | asection *input_section; | |
1137 | bfd *output_bfd; | |
1138 | char **error_message; | |
1139 | { | |
b34976b6 | 1140 | bfd_boolean relocateable; |
c6e90b02 TS |
1141 | bfd_reloc_status_type ret; |
1142 | bfd_vma gp; | |
252b5132 | 1143 | |
c6e90b02 TS |
1144 | /* If we're relocating, and this is an external symbol with no |
1145 | addend, we don't want to change anything. We will only have an | |
1146 | addend if this is a newly created reloc, not read from an ELF | |
1147 | file. */ | |
1148 | if (output_bfd != (bfd *) NULL | |
1149 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1150 | && reloc_entry->addend == 0) | |
1151 | { | |
1152 | *error_message = (char *) | |
1153 | _("32bits gp relative relocation occurs for an external symbol"); | |
1154 | return bfd_reloc_outofrange; | |
1155 | } | |
252b5132 | 1156 | |
c6e90b02 TS |
1157 | if (output_bfd != (bfd *) NULL) |
1158 | { | |
b34976b6 | 1159 | relocateable = TRUE; |
c6e90b02 TS |
1160 | gp = _bfd_get_gp_value (output_bfd); |
1161 | } | |
1162 | else | |
1163 | { | |
b34976b6 | 1164 | relocateable = FALSE; |
c6e90b02 | 1165 | output_bfd = symbol->section->output_section->owner; |
252b5132 | 1166 | |
c6e90b02 TS |
1167 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
1168 | error_message, &gp); | |
1169 | if (ret != bfd_reloc_ok) | |
1170 | return ret; | |
1171 | } | |
252b5132 | 1172 | |
c6e90b02 TS |
1173 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, |
1174 | relocateable, data, gp); | |
1175 | } | |
252b5132 | 1176 | |
c6e90b02 TS |
1177 | static bfd_reloc_status_type |
1178 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1179 | gp) | |
1180 | bfd *abfd; | |
1181 | asymbol *symbol; | |
1182 | arelent *reloc_entry; | |
1183 | asection *input_section; | |
b34976b6 | 1184 | bfd_boolean relocateable; |
c6e90b02 TS |
1185 | PTR data; |
1186 | bfd_vma gp; | |
1187 | { | |
1188 | bfd_vma relocation; | |
1189 | unsigned long val; | |
252b5132 | 1190 | |
c6e90b02 TS |
1191 | if (bfd_is_com_section (symbol->section)) |
1192 | relocation = 0; | |
1193 | else | |
1194 | relocation = symbol->value; | |
252b5132 | 1195 | |
c6e90b02 TS |
1196 | relocation += symbol->section->output_section->vma; |
1197 | relocation += symbol->section->output_offset; | |
252b5132 | 1198 | |
c6e90b02 TS |
1199 | if (reloc_entry->address > input_section->_cooked_size) |
1200 | return bfd_reloc_outofrange; | |
252b5132 | 1201 | |
c6e90b02 TS |
1202 | if (reloc_entry->howto->src_mask == 0) |
1203 | { | |
1204 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
1205 | val = 0; | |
1206 | } | |
1207 | else | |
1208 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 1209 | |
c6e90b02 TS |
1210 | /* Set val to the offset into the section or symbol. */ |
1211 | val += reloc_entry->addend; | |
252b5132 | 1212 | |
c6e90b02 TS |
1213 | /* Adjust val for the final section location and GP value. If we |
1214 | are producing relocateable output, we don't want to do this for | |
1215 | an external symbol. */ | |
1216 | if (! relocateable | |
1217 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1218 | val += relocation - gp; | |
252b5132 | 1219 | |
c6e90b02 | 1220 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address); |
c6142e5d | 1221 | |
c6e90b02 TS |
1222 | if (relocateable) |
1223 | reloc_entry->address += input_section->output_offset; | |
252b5132 | 1224 | |
c6e90b02 | 1225 | return bfd_reloc_ok; |
252b5132 RH |
1226 | } |
1227 | ||
c6e90b02 TS |
1228 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are |
1229 | generated when addresses are 64 bits. The upper 32 bits are a simple | |
1230 | sign extension. */ | |
7403cb63 | 1231 | |
c6e90b02 TS |
1232 | static bfd_reloc_status_type |
1233 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1234 | output_bfd, error_message) | |
1235 | bfd *abfd; | |
1236 | arelent *reloc_entry; | |
1237 | asymbol *symbol; | |
1238 | PTR data; | |
1239 | asection *input_section; | |
1240 | bfd *output_bfd; | |
1241 | char **error_message; | |
7403cb63 | 1242 | { |
c6e90b02 TS |
1243 | bfd_reloc_status_type r; |
1244 | arelent reloc32; | |
1245 | unsigned long val; | |
1246 | bfd_size_type addr; | |
7403cb63 | 1247 | |
c6e90b02 TS |
1248 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
1249 | input_section, output_bfd, error_message); | |
1250 | if (r != bfd_reloc_continue) | |
1251 | return r; | |
be3ccd9c | 1252 | |
c6e90b02 TS |
1253 | /* Do a normal 32 bit relocation on the lower 32 bits. */ |
1254 | reloc32 = *reloc_entry; | |
1255 | if (bfd_big_endian (abfd)) | |
1256 | reloc32.address += 4; | |
1257 | reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; | |
1258 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, | |
1259 | output_bfd, error_message); | |
be3ccd9c | 1260 | |
c6e90b02 TS |
1261 | /* Sign extend into the upper 32 bits. */ |
1262 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
1263 | if ((val & 0x80000000) != 0) | |
1264 | val = 0xffffffff; | |
1265 | else | |
1266 | val = 0; | |
1267 | addr = reloc_entry->address; | |
1268 | if (bfd_little_endian (abfd)) | |
1269 | addr += 4; | |
1270 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr); | |
1271 | ||
1272 | return r; | |
7403cb63 MM |
1273 | } |
1274 | ||
c6e90b02 | 1275 | /* Handle a mips16 jump. */ |
252b5132 | 1276 | |
c6e90b02 TS |
1277 | static bfd_reloc_status_type |
1278 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1279 | output_bfd, error_message) | |
1280 | bfd *abfd ATTRIBUTE_UNUSED; | |
1281 | arelent *reloc_entry; | |
1282 | asymbol *symbol; | |
1283 | PTR data ATTRIBUTE_UNUSED; | |
1284 | asection *input_section; | |
252b5132 | 1285 | bfd *output_bfd; |
c6e90b02 | 1286 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 | 1287 | { |
c6e90b02 TS |
1288 | if (output_bfd != (bfd *) NULL |
1289 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1290 | && reloc_entry->addend == 0) | |
252b5132 | 1291 | { |
c6e90b02 TS |
1292 | reloc_entry->address += input_section->output_offset; |
1293 | return bfd_reloc_ok; | |
1294 | } | |
252b5132 | 1295 | |
c6e90b02 TS |
1296 | /* FIXME. */ |
1297 | { | |
b34976b6 | 1298 | static bfd_boolean warned; |
252b5132 | 1299 | |
c6e90b02 TS |
1300 | if (! warned) |
1301 | (*_bfd_error_handler) | |
1302 | (_("Linking mips16 objects into %s format is not supported"), | |
1303 | bfd_get_target (input_section->output_section->owner)); | |
b34976b6 | 1304 | warned = TRUE; |
c6e90b02 | 1305 | } |
252b5132 | 1306 | |
c6e90b02 TS |
1307 | return bfd_reloc_undefined; |
1308 | } | |
252b5132 | 1309 | |
c6e90b02 | 1310 | /* Handle a mips16 GP relative reloc. */ |
252b5132 | 1311 | |
c6e90b02 TS |
1312 | static bfd_reloc_status_type |
1313 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1314 | output_bfd, error_message) | |
1315 | bfd *abfd; | |
1316 | arelent *reloc_entry; | |
1317 | asymbol *symbol; | |
1318 | PTR data; | |
1319 | asection *input_section; | |
1320 | bfd *output_bfd; | |
1321 | char **error_message; | |
1322 | { | |
b34976b6 | 1323 | bfd_boolean relocateable; |
c6e90b02 TS |
1324 | bfd_reloc_status_type ret; |
1325 | bfd_vma gp; | |
1326 | unsigned short extend, insn; | |
1327 | unsigned long final; | |
252b5132 | 1328 | |
c6e90b02 TS |
1329 | /* If we're relocating, and this is an external symbol with no |
1330 | addend, we don't want to change anything. We will only have an | |
1331 | addend if this is a newly created reloc, not read from an ELF | |
1332 | file. */ | |
1333 | if (output_bfd != NULL | |
1334 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1335 | && reloc_entry->addend == 0) | |
1336 | { | |
1337 | reloc_entry->address += input_section->output_offset; | |
1338 | return bfd_reloc_ok; | |
1339 | } | |
252b5132 | 1340 | |
c6e90b02 | 1341 | if (output_bfd != NULL) |
b34976b6 | 1342 | relocateable = TRUE; |
c6e90b02 TS |
1343 | else |
1344 | { | |
b34976b6 | 1345 | relocateable = FALSE; |
c6e90b02 | 1346 | output_bfd = symbol->section->output_section->owner; |
252b5132 RH |
1347 | } |
1348 | ||
c6e90b02 TS |
1349 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
1350 | &gp); | |
1351 | if (ret != bfd_reloc_ok) | |
1352 | return ret; | |
252b5132 | 1353 | |
c6e90b02 TS |
1354 | if (reloc_entry->address > input_section->_cooked_size) |
1355 | return bfd_reloc_outofrange; | |
252b5132 | 1356 | |
c6e90b02 TS |
1357 | /* Pick up the mips16 extend instruction and the real instruction. */ |
1358 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1359 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); | |
252b5132 | 1360 | |
c6e90b02 TS |
1361 | /* Stuff the current addend back as a 32 bit value, do the usual |
1362 | relocation, and then clean up. */ | |
1363 | bfd_put_32 (abfd, | |
1364 | (bfd_vma) (((extend & 0x1f) << 11) | |
1365 | | (extend & 0x7e0) | |
1366 | | (insn & 0x1f)), | |
1367 | (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 1368 | |
c6e90b02 TS |
1369 | ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
1370 | input_section, relocateable, data, gp); | |
c6142e5d | 1371 | |
c6e90b02 TS |
1372 | final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
1373 | bfd_put_16 (abfd, | |
1374 | (bfd_vma) ((extend & 0xf800) | |
1375 | | ((final >> 11) & 0x1f) | |
1376 | | (final & 0x7e0)), | |
1377 | (bfd_byte *) data + reloc_entry->address); | |
1378 | bfd_put_16 (abfd, | |
1379 | (bfd_vma) ((insn & 0xffe0) | |
1380 | | (final & 0x1f)), | |
1381 | (bfd_byte *) data + reloc_entry->address + 2); | |
252b5132 | 1382 | |
c6e90b02 TS |
1383 | return ret; |
1384 | } | |
7403cb63 | 1385 | |
c6e90b02 | 1386 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
252b5132 | 1387 | |
c6e90b02 | 1388 | struct elf_reloc_map { |
cb7394f2 TS |
1389 | bfd_reloc_code_real_type bfd_val; |
1390 | enum elf_mips_reloc_type elf_val; | |
c6e90b02 | 1391 | }; |
252b5132 | 1392 | |
c6e90b02 TS |
1393 | static const struct elf_reloc_map mips_reloc_map[] = |
1394 | { | |
28458e7e | 1395 | { BFD_RELOC_NONE, R_MIPS_NONE }, |
c6e90b02 TS |
1396 | { BFD_RELOC_16, R_MIPS_16 }, |
1397 | { BFD_RELOC_32, R_MIPS_32 }, | |
cb7394f2 | 1398 | /* There is no BFD reloc for R_MIPS_REL32. */ |
c6e90b02 TS |
1399 | { BFD_RELOC_64, R_MIPS_64 }, |
1400 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
1401 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1402 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1403 | { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, | |
1404 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1405 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
7c2be35c | 1406 | { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 }, |
c6e90b02 TS |
1407 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, |
1408 | { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, | |
1409 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
1410 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
1411 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
1412 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, | |
1413 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, | |
1414 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, | |
1415 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, | |
1416 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } | |
1417 | }; | |
252b5132 | 1418 | |
c6e90b02 | 1419 | /* Given a BFD reloc type, return a howto structure. */ |
252b5132 | 1420 | |
c6e90b02 TS |
1421 | static reloc_howto_type * |
1422 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
1423 | bfd *abfd; | |
1424 | bfd_reloc_code_real_type code; | |
252b5132 | 1425 | { |
c6e90b02 | 1426 | unsigned int i; |
cb7394f2 | 1427 | reloc_howto_type *howto_table = elf_mips_howto_table_rel; |
252b5132 | 1428 | |
cb7394f2 TS |
1429 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); |
1430 | i++) | |
252b5132 | 1431 | { |
cb7394f2 TS |
1432 | if (mips_reloc_map[i].bfd_val == code) |
1433 | return &howto_table[(int) mips_reloc_map[i].elf_val]; | |
252b5132 RH |
1434 | } |
1435 | ||
c6e90b02 | 1436 | switch (code) |
252b5132 | 1437 | { |
c6e90b02 TS |
1438 | default: |
1439 | bfd_set_error (bfd_error_bad_value); | |
1440 | return NULL; | |
252b5132 | 1441 | |
c6e90b02 TS |
1442 | case BFD_RELOC_CTOR: |
1443 | /* We need to handle BFD_RELOC_CTOR specially. | |
1444 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the | |
1445 | size of addresses on this architecture. */ | |
1446 | if (bfd_arch_bits_per_address (abfd) == 32) | |
cb7394f2 | 1447 | return &howto_table[(int) R_MIPS_32]; |
c6e90b02 TS |
1448 | else |
1449 | return &elf_mips_ctor64_howto; | |
252b5132 | 1450 | |
c6e90b02 TS |
1451 | case BFD_RELOC_MIPS16_JMP: |
1452 | return &elf_mips16_jump_howto; | |
1453 | case BFD_RELOC_MIPS16_GPREL: | |
1454 | return &elf_mips16_gprel_howto; | |
1455 | case BFD_RELOC_VTABLE_INHERIT: | |
1456 | return &elf_mips_gnu_vtinherit_howto; | |
1457 | case BFD_RELOC_VTABLE_ENTRY: | |
1458 | return &elf_mips_gnu_vtentry_howto; | |
1459 | case BFD_RELOC_PCREL_HI16_S: | |
1460 | return &elf_mips_gnu_rel_hi16; | |
1461 | case BFD_RELOC_PCREL_LO16: | |
1462 | return &elf_mips_gnu_rel_lo16; | |
7c2be35c | 1463 | case BFD_RELOC_MIPSEMB_16_PCREL_S2: |
c6e90b02 TS |
1464 | return &elf_mips_gnu_rel16_s2; |
1465 | case BFD_RELOC_64_PCREL: | |
1466 | return &elf_mips_gnu_pcrel64; | |
1467 | case BFD_RELOC_32_PCREL: | |
1468 | return &elf_mips_gnu_pcrel32; | |
1469 | } | |
1470 | } | |
252b5132 | 1471 | |
947216bf | 1472 | /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 1473 | |
c6e90b02 TS |
1474 | static reloc_howto_type * |
1475 | mips_elf32_rtype_to_howto (r_type, rela_p) | |
1476 | unsigned int r_type; | |
b34976b6 | 1477 | bfd_boolean rela_p ATTRIBUTE_UNUSED; |
c6e90b02 TS |
1478 | { |
1479 | switch (r_type) | |
1480 | { | |
1481 | case R_MIPS16_26: | |
1482 | return &elf_mips16_jump_howto; | |
c6e90b02 TS |
1483 | case R_MIPS16_GPREL: |
1484 | return &elf_mips16_gprel_howto; | |
c6e90b02 TS |
1485 | case R_MIPS_GNU_VTINHERIT: |
1486 | return &elf_mips_gnu_vtinherit_howto; | |
c6e90b02 TS |
1487 | case R_MIPS_GNU_VTENTRY: |
1488 | return &elf_mips_gnu_vtentry_howto; | |
c6e90b02 TS |
1489 | case R_MIPS_GNU_REL_HI16: |
1490 | return &elf_mips_gnu_rel_hi16; | |
c6e90b02 TS |
1491 | case R_MIPS_GNU_REL_LO16: |
1492 | return &elf_mips_gnu_rel_lo16; | |
c6e90b02 TS |
1493 | case R_MIPS_GNU_REL16_S2: |
1494 | return &elf_mips_gnu_rel16_s2; | |
c6e90b02 TS |
1495 | case R_MIPS_PC64: |
1496 | return &elf_mips_gnu_pcrel64; | |
c6e90b02 TS |
1497 | case R_MIPS_PC32: |
1498 | return &elf_mips_gnu_pcrel32; | |
c6e90b02 TS |
1499 | default: |
1500 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
1501 | return &elf_mips_howto_table_rel[r_type]; | |
1502 | } | |
1503 | } | |
252b5132 | 1504 | |
947216bf | 1505 | /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 1506 | |
c6e90b02 TS |
1507 | static void |
1508 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
1509 | bfd *abfd; | |
1510 | arelent *cache_ptr; | |
947216bf | 1511 | Elf_Internal_Rela *dst; |
c6e90b02 TS |
1512 | { |
1513 | unsigned int r_type; | |
252b5132 | 1514 | |
c6e90b02 | 1515 | r_type = ELF32_R_TYPE (dst->r_info); |
b34976b6 | 1516 | cache_ptr->howto = mips_elf32_rtype_to_howto (r_type, FALSE); |
252b5132 | 1517 | |
c6e90b02 TS |
1518 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP |
1519 | value for the object file. We get the addend now, rather than | |
1520 | when we do the relocation, because the symbol manipulations done | |
1521 | by the linker may cause us to lose track of the input BFD. */ | |
1522 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
1523 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
1524 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
1525 | cache_ptr->addend = elf_gp (abfd); | |
1526 | } | |
5499724a | 1527 | |
947216bf | 1528 | /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ |
252b5132 | 1529 | |
c6e90b02 TS |
1530 | static void |
1531 | mips_info_to_howto_rela (abfd, cache_ptr, dst) | |
1532 | bfd *abfd; | |
1533 | arelent *cache_ptr; | |
947216bf | 1534 | Elf_Internal_Rela *dst; |
c6e90b02 | 1535 | { |
947216bf | 1536 | mips_info_to_howto_rel (abfd, cache_ptr, dst); |
252b5132 | 1537 | |
c6e90b02 | 1538 | /* If we ever need to do any extra processing with dst->r_addend |
947216bf | 1539 | (the field omitted in an Elf_Internal_Rel) we can do it here. */ |
c6e90b02 TS |
1540 | } |
1541 | \f | |
1542 | /* Determine whether a symbol is global for the purposes of splitting | |
1543 | the symbol table into global symbols and local symbols. At least | |
1544 | on Irix 5, this split must be between section symbols and all other | |
1545 | symbols. On most ELF targets the split is between static symbols | |
1546 | and externally visible symbols. */ | |
252b5132 | 1547 | |
b34976b6 | 1548 | static bfd_boolean |
c6e90b02 TS |
1549 | mips_elf_sym_is_global (abfd, sym) |
1550 | bfd *abfd ATTRIBUTE_UNUSED; | |
1551 | asymbol *sym; | |
1552 | { | |
1553 | if (SGI_COMPAT (abfd)) | |
1554 | return (sym->flags & BSF_SECTION_SYM) == 0; | |
1555 | else | |
1556 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
1557 | || bfd_is_und_section (bfd_get_section (sym)) | |
1558 | || bfd_is_com_section (bfd_get_section (sym))); | |
1559 | } | |
1560 | \f | |
1561 | /* Set the right machine number for a MIPS ELF file. */ | |
7403cb63 | 1562 | |
b34976b6 | 1563 | static bfd_boolean |
c6e90b02 TS |
1564 | mips_elf32_object_p (abfd) |
1565 | bfd *abfd; | |
1566 | { | |
1567 | unsigned long mach; | |
103186c6 | 1568 | |
c6e90b02 TS |
1569 | /* Irix 5 and 6 are broken. Object file symbol tables are not always |
1570 | sorted correctly such that local symbols precede global symbols, | |
1571 | and the sh_info field in the symbol table is not always right. */ | |
1572 | if (SGI_COMPAT (abfd)) | |
b34976b6 | 1573 | elf_bad_symtab (abfd) = TRUE; |
103186c6 | 1574 | |
8a397dad | 1575 | if (ABI_N32_P (abfd)) |
b34976b6 | 1576 | return FALSE; |
8a397dad | 1577 | |
c6e90b02 TS |
1578 | mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); |
1579 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); | |
252b5132 | 1580 | |
b34976b6 | 1581 | return TRUE; |
c6e90b02 TS |
1582 | } |
1583 | \f | |
1584 | /* MIPS ELF local labels start with '$', not 'L'. */ | |
252b5132 | 1585 | |
b34976b6 | 1586 | static bfd_boolean |
c6e90b02 TS |
1587 | mips_elf_is_local_label_name (abfd, name) |
1588 | bfd *abfd; | |
1589 | const char *name; | |
1590 | { | |
1591 | if (name[0] == '$') | |
b34976b6 | 1592 | return TRUE; |
252b5132 | 1593 | |
c6e90b02 TS |
1594 | /* On Irix 6, the labels go back to starting with '.', so we accept |
1595 | the generic ELF local label syntax as well. */ | |
1596 | return _bfd_elf_is_local_label_name (abfd, name); | |
252b5132 RH |
1597 | } |
1598 | \f | |
c6e90b02 | 1599 | /* Support for core dump NOTE sections. */ |
b34976b6 | 1600 | static bfd_boolean |
c6e90b02 | 1601 | elf32_mips_grok_prstatus (abfd, note) |
bb0082d6 AM |
1602 | bfd *abfd; |
1603 | Elf_Internal_Note *note; | |
1604 | { | |
1605 | int offset; | |
dc810e39 | 1606 | unsigned int raw_size; |
bb0082d6 AM |
1607 | |
1608 | switch (note->descsz) | |
1609 | { | |
1610 | default: | |
b34976b6 | 1611 | return FALSE; |
bb0082d6 AM |
1612 | |
1613 | case 256: /* Linux/MIPS */ | |
1614 | /* pr_cursig */ | |
1615 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1616 | ||
1617 | /* pr_pid */ | |
1618 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1619 | ||
1620 | /* pr_reg */ | |
1621 | offset = 72; | |
1622 | raw_size = 180; | |
1623 | ||
1624 | break; | |
1625 | } | |
1626 | ||
1627 | /* Make a ".reg/999" section. */ | |
936e320b AM |
1628 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
1629 | raw_size, note->descpos + offset); | |
bb0082d6 AM |
1630 | } |
1631 | ||
b34976b6 | 1632 | static bfd_boolean |
c6e90b02 | 1633 | elf32_mips_grok_psinfo (abfd, note) |
bb0082d6 AM |
1634 | bfd *abfd; |
1635 | Elf_Internal_Note *note; | |
1636 | { | |
1637 | switch (note->descsz) | |
1638 | { | |
1639 | default: | |
b34976b6 | 1640 | return FALSE; |
bb0082d6 AM |
1641 | |
1642 | case 128: /* Linux/MIPS elf_prpsinfo */ | |
1643 | elf_tdata (abfd)->core_program | |
1644 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1645 | elf_tdata (abfd)->core_command | |
1646 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1647 | } | |
1648 | ||
1649 | /* Note that for some reason, a spurious space is tacked | |
1650 | onto the end of the args in some (at least one anyway) | |
1651 | implementations, so strip it off if it exists. */ | |
1652 | ||
1653 | { | |
1654 | char *command = elf_tdata (abfd)->core_command; | |
1655 | int n = strlen (command); | |
1656 | ||
1657 | if (0 < n && command[n - 1] == ' ') | |
1658 | command[n - 1] = '\0'; | |
1659 | } | |
1660 | ||
b34976b6 | 1661 | return TRUE; |
bb0082d6 AM |
1662 | } |
1663 | \f | |
c6e90b02 TS |
1664 | /* Depending on the target vector we generate some version of Irix |
1665 | executables or "normal" MIPS ELF ABI executables. */ | |
1666 | static irix_compat_t | |
1667 | elf32_mips_irix_compat (abfd) | |
1668 | bfd *abfd; | |
1669 | { | |
cb7394f2 TS |
1670 | if ((abfd->xvec == &bfd_elf32_bigmips_vec) |
1671 | || (abfd->xvec == &bfd_elf32_littlemips_vec)) | |
c6e90b02 | 1672 | return ict_irix5; |
cb7394f2 TS |
1673 | else |
1674 | return ict_none; | |
c6e90b02 | 1675 | } |
73d074b4 | 1676 | \f |
030d18fb CD |
1677 | /* Given a data section and an in-memory embedded reloc section, store |
1678 | relocation information into the embedded reloc section which can be | |
1679 | used at runtime to relocate the data section. This is called by the | |
1680 | linker when the --embedded-relocs switch is used. This is called | |
1681 | after the add_symbols entry point has been called for all the | |
1682 | objects, and before the final_link entry point is called. */ | |
1683 | ||
b34976b6 | 1684 | bfd_boolean |
030d18fb CD |
1685 | bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
1686 | bfd *abfd; | |
1687 | struct bfd_link_info *info; | |
1688 | asection *datasec; | |
1689 | asection *relsec; | |
1690 | char **errmsg; | |
1691 | { | |
1692 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
1693 | Elf_Internal_Sym *isymbuf = NULL; |
1694 | Elf_Internal_Rela *internal_relocs = NULL; | |
030d18fb CD |
1695 | Elf_Internal_Rela *irel, *irelend; |
1696 | bfd_byte *p; | |
030d18fb CD |
1697 | |
1698 | BFD_ASSERT (! info->relocateable); | |
1699 | ||
1700 | *errmsg = NULL; | |
1701 | ||
1702 | if (datasec->reloc_count == 0) | |
b34976b6 | 1703 | return TRUE; |
030d18fb | 1704 | |
030d18fb CD |
1705 | /* Read this BFD's symbols if we haven't done so already, or get the cached |
1706 | copy if it exists. */ | |
6cdc0ccc AM |
1707 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1708 | if (symtab_hdr->sh_info != 0) | |
030d18fb | 1709 | { |
6cdc0ccc AM |
1710 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1711 | if (isymbuf == NULL) | |
1712 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1713 | symtab_hdr->sh_info, 0, | |
1714 | NULL, NULL, NULL); | |
1715 | if (isymbuf == NULL) | |
030d18fb CD |
1716 | goto error_return; |
1717 | } | |
1718 | ||
1719 | /* Get a copy of the native relocations. */ | |
1720 | internal_relocs = (_bfd_elf32_link_read_relocs | |
1721 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1722 | info->keep_memory)); | |
1723 | if (internal_relocs == NULL) | |
1724 | goto error_return; | |
030d18fb CD |
1725 | |
1726 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12); | |
1727 | if (relsec->contents == NULL) | |
1728 | goto error_return; | |
1729 | ||
1730 | p = relsec->contents; | |
1731 | ||
1732 | irelend = internal_relocs + datasec->reloc_count; | |
1733 | ||
1734 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
1735 | { | |
1736 | asection *targetsec; | |
1737 | ||
1738 | /* We are going to write a four byte longword into the runtime | |
c6e90b02 TS |
1739 | reloc section. The longword will be the address in the data |
1740 | section which must be relocated. It is followed by the name | |
1741 | of the target section NUL-padded or truncated to 8 | |
1742 | characters. */ | |
030d18fb CD |
1743 | |
1744 | /* We can only relocate absolute longword relocs at run time. */ | |
1745 | if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) && | |
1746 | (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64)) | |
1747 | { | |
1748 | *errmsg = _("unsupported reloc type"); | |
1749 | bfd_set_error (bfd_error_bad_value); | |
1750 | goto error_return; | |
1751 | } | |
1752 | /* Get the target section referred to by the reloc. */ | |
1753 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1754 | { | |
6cdc0ccc | 1755 | Elf_Internal_Sym *isym; |
030d18fb CD |
1756 | |
1757 | /* A local symbol. */ | |
6cdc0ccc AM |
1758 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
1759 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
030d18fb CD |
1760 | } |
1761 | else | |
1762 | { | |
1763 | unsigned long indx; | |
1764 | struct elf_link_hash_entry *h; | |
1765 | ||
1766 | /* An external symbol. */ | |
1767 | indx = ELF32_R_SYM (irel->r_info); | |
1768 | h = elf_sym_hashes (abfd)[indx]; | |
1769 | targetsec = NULL; | |
1770 | /* | |
c6e90b02 TS |
1771 | For some reason, in certain programs, the symbol will |
1772 | not be in the hash table. It seems to happen when you | |
1773 | declare a static table of pointers to const external structures. | |
1774 | In this case, the relocs are relative to data, not | |
1775 | text, so just treating it like an undefined link | |
1776 | should be sufficient. */ | |
030d18fb CD |
1777 | BFD_ASSERT(h != NULL); |
1778 | if (h->root.type == bfd_link_hash_defined | |
1779 | || h->root.type == bfd_link_hash_defweak) | |
1780 | targetsec = h->root.u.def.section; | |
1781 | } | |
1782 | ||
1783 | ||
1784 | /* | |
c6e90b02 TS |
1785 | Set the low bit of the relocation offset if it's a MIPS64 reloc. |
1786 | Relocations will always be on (at least) 32-bit boundaries. */ | |
030d18fb CD |
1787 | |
1788 | bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) + | |
1789 | ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)), | |
1790 | p); | |
1791 | memset (p + 4, 0, 8); | |
1792 | if (targetsec != NULL) | |
1793 | strncpy (p + 4, targetsec->output_section->name, 8); | |
1794 | } | |
1795 | ||
6cdc0ccc AM |
1796 | if (internal_relocs != NULL |
1797 | && elf_section_data (datasec)->relocs != internal_relocs) | |
1798 | free (internal_relocs); | |
1799 | if (isymbuf != NULL | |
1800 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1801 | free (isymbuf); | |
b34976b6 | 1802 | return TRUE; |
030d18fb CD |
1803 | |
1804 | error_return: | |
6cdc0ccc AM |
1805 | if (internal_relocs != NULL |
1806 | && elf_section_data (datasec)->relocs != internal_relocs) | |
1807 | free (internal_relocs); | |
1808 | if (isymbuf != NULL | |
1809 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
1810 | free (isymbuf); | |
b34976b6 | 1811 | return FALSE; |
030d18fb CD |
1812 | } |
1813 | \f | |
252b5132 RH |
1814 | /* ECOFF swapping routines. These are used when dealing with the |
1815 | .mdebug section, which is in the ECOFF debugging format. */ | |
be3ccd9c | 1816 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { |
252b5132 RH |
1817 | /* Symbol table magic number. */ |
1818 | magicSym, | |
1819 | /* Alignment of debugging information. E.g., 4. */ | |
1820 | 4, | |
1821 | /* Sizes of external symbolic information. */ | |
1822 | sizeof (struct hdr_ext), | |
1823 | sizeof (struct dnr_ext), | |
1824 | sizeof (struct pdr_ext), | |
1825 | sizeof (struct sym_ext), | |
1826 | sizeof (struct opt_ext), | |
1827 | sizeof (struct fdr_ext), | |
1828 | sizeof (struct rfd_ext), | |
1829 | sizeof (struct ext_ext), | |
1830 | /* Functions to swap in external symbolic data. */ | |
1831 | ecoff_swap_hdr_in, | |
1832 | ecoff_swap_dnr_in, | |
1833 | ecoff_swap_pdr_in, | |
1834 | ecoff_swap_sym_in, | |
1835 | ecoff_swap_opt_in, | |
1836 | ecoff_swap_fdr_in, | |
1837 | ecoff_swap_rfd_in, | |
1838 | ecoff_swap_ext_in, | |
1839 | _bfd_ecoff_swap_tir_in, | |
1840 | _bfd_ecoff_swap_rndx_in, | |
1841 | /* Functions to swap out external symbolic data. */ | |
1842 | ecoff_swap_hdr_out, | |
1843 | ecoff_swap_dnr_out, | |
1844 | ecoff_swap_pdr_out, | |
1845 | ecoff_swap_sym_out, | |
1846 | ecoff_swap_opt_out, | |
1847 | ecoff_swap_fdr_out, | |
1848 | ecoff_swap_rfd_out, | |
1849 | ecoff_swap_ext_out, | |
1850 | _bfd_ecoff_swap_tir_out, | |
1851 | _bfd_ecoff_swap_rndx_out, | |
1852 | /* Function to read in symbolic data. */ | |
1853 | _bfd_mips_elf_read_ecoff_info | |
1854 | }; | |
1855 | \f | |
252b5132 RH |
1856 | #define ELF_ARCH bfd_arch_mips |
1857 | #define ELF_MACHINE_CODE EM_MIPS | |
1858 | ||
1859 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
1860 | a value of 0x1000, and we are compatible. */ | |
1861 | #define ELF_MAXPAGESIZE 0x1000 | |
1862 | ||
b34976b6 AM |
1863 | #define elf_backend_collect TRUE |
1864 | #define elf_backend_type_change_ok TRUE | |
1865 | #define elf_backend_can_gc_sections TRUE | |
3f830999 | 1866 | #define elf_info_to_howto mips_info_to_howto_rela |
252b5132 RH |
1867 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
1868 | #define elf_backend_sym_is_global mips_elf_sym_is_global | |
c6e90b02 | 1869 | #define elf_backend_object_p mips_elf32_object_p |
d75bc93d TS |
1870 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
1871 | #define elf_backend_section_processing _bfd_mips_elf_section_processing | |
103186c6 | 1872 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
252b5132 RH |
1873 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
1874 | #define elf_backend_section_from_bfd_section \ | |
1875 | _bfd_mips_elf_section_from_bfd_section | |
103186c6 | 1876 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
d75bc93d TS |
1877 | #define elf_backend_link_output_symbol_hook \ |
1878 | _bfd_mips_elf_link_output_symbol_hook | |
103186c6 MM |
1879 | #define elf_backend_create_dynamic_sections \ |
1880 | _bfd_mips_elf_create_dynamic_sections | |
1881 | #define elf_backend_check_relocs _bfd_mips_elf_check_relocs | |
1882 | #define elf_backend_adjust_dynamic_symbol \ | |
1883 | _bfd_mips_elf_adjust_dynamic_symbol | |
1884 | #define elf_backend_always_size_sections \ | |
1885 | _bfd_mips_elf_always_size_sections | |
1886 | #define elf_backend_size_dynamic_sections \ | |
1887 | _bfd_mips_elf_size_dynamic_sections | |
1888 | #define elf_backend_relocate_section _bfd_mips_elf_relocate_section | |
103186c6 MM |
1889 | #define elf_backend_finish_dynamic_symbol \ |
1890 | _bfd_mips_elf_finish_dynamic_symbol | |
1891 | #define elf_backend_finish_dynamic_sections \ | |
1892 | _bfd_mips_elf_finish_dynamic_sections | |
d75bc93d TS |
1893 | #define elf_backend_final_write_processing \ |
1894 | _bfd_mips_elf_final_write_processing | |
1895 | #define elf_backend_additional_program_headers \ | |
1896 | _bfd_mips_elf_additional_program_headers | |
1897 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map | |
103186c6 MM |
1898 | #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook |
1899 | #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook | |
8a20f077 UC |
1900 | #define elf_backend_copy_indirect_symbol \ |
1901 | _bfd_mips_elf_copy_indirect_symbol | |
b305ef96 | 1902 | #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol |
c6e90b02 TS |
1903 | #define elf_backend_grok_prstatus elf32_mips_grok_prstatus |
1904 | #define elf_backend_grok_psinfo elf32_mips_grok_psinfo | |
d75bc93d TS |
1905 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap |
1906 | ||
1907 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) | |
1908 | #define elf_backend_plt_header_size 0 | |
1909 | #define elf_backend_may_use_rel_p 1 | |
1910 | #define elf_backend_may_use_rela_p 0 | |
1911 | #define elf_backend_default_use_rela_p 0 | |
b34976b6 | 1912 | #define elf_backend_sign_extend_vma TRUE |
b305ef96 | 1913 | |
d01414a5 | 1914 | #define elf_backend_discard_info _bfd_mips_elf_discard_info |
73d074b4 | 1915 | #define elf_backend_ignore_discarded_relocs \ |
53bfd6b4 | 1916 | _bfd_mips_elf_ignore_discarded_relocs |
c6e90b02 TS |
1917 | #define elf_backend_mips_irix_compat elf32_mips_irix_compat |
1918 | #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto | |
252b5132 RH |
1919 | #define bfd_elf32_bfd_is_local_label_name \ |
1920 | mips_elf_is_local_label_name | |
1921 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line | |
f0abc2a1 | 1922 | #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook |
252b5132 | 1923 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents |
c6e90b02 TS |
1924 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
1925 | _bfd_elf_mips_get_relocated_section_contents | |
252b5132 | 1926 | #define bfd_elf32_bfd_link_hash_table_create \ |
103186c6 MM |
1927 | _bfd_mips_elf_link_hash_table_create |
1928 | #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link | |
252b5132 RH |
1929 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
1930 | _bfd_mips_elf_merge_private_bfd_data | |
1931 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
1932 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
1933 | _bfd_mips_elf_print_private_bfd_data | |
e364195d | 1934 | |
d75bc93d TS |
1935 | /* Support for SGI-ish mips targets. */ |
1936 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec | |
1937 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
1938 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
1939 | #define TARGET_BIG_NAME "elf32-bigmips" | |
1940 | ||
1941 | #include "elf32-target.h" | |
e364195d | 1942 | |
d75bc93d TS |
1943 | /* Support for traditional mips targets. */ |
1944 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ | |
e364195d UC |
1945 | |
1946 | #undef TARGET_LITTLE_SYM | |
1947 | #undef TARGET_LITTLE_NAME | |
1948 | #undef TARGET_BIG_SYM | |
1949 | #undef TARGET_BIG_NAME | |
1950 | ||
1951 | #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec | |
1952 | #define TARGET_LITTLE_NAME "elf32-tradlittlemips" | |
1953 | #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec | |
1954 | #define TARGET_BIG_NAME "elf32-tradbigmips" | |
1955 | ||
c6e90b02 | 1956 | /* Include the target file again for this target. */ |
e364195d | 1957 | #include "elf32-target.h" |