Commit | Line | Data |
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efcbd82c | 1 | /* MIPS-specific support for 32-bit ELF |
3f0a7f7f | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
be3ccd9c | 3 | 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 TS |
62 | static reloc_howto_type *mips_elf32_rtype_to_howto |
63 | PARAMS ((unsigned int, boolean)); | |
252b5132 RH |
64 | static void mips_info_to_howto_rel |
65 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
3f830999 MM |
66 | static void mips_info_to_howto_rela |
67 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
252b5132 | 68 | static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); |
c6e90b02 | 69 | static boolean mips_elf32_object_p PARAMS ((bfd *)); |
252b5132 RH |
70 | static boolean mips_elf_is_local_label_name |
71 | PARAMS ((bfd *, const char *)); | |
252b5132 RH |
72 | static bfd_reloc_status_type mips16_jump_reloc |
73 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
74 | static bfd_reloc_status_type mips16_gprel_reloc | |
75 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
76 | static bfd_reloc_status_type mips_elf_final_gp |
77 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); | |
7403cb63 | 78 | static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *)); |
c6e90b02 | 79 | static boolean elf32_mips_grok_prstatus |
9e80ff3a | 80 | PARAMS ((bfd *, Elf_Internal_Note *)); |
c6e90b02 | 81 | static boolean elf32_mips_grok_psinfo |
9e80ff3a | 82 | PARAMS ((bfd *, Elf_Internal_Note *)); |
c6e90b02 | 83 | static boolean elf32_mips_discard_info |
73d074b4 | 84 | PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *)); |
c6e90b02 | 85 | static boolean elf32_mips_ignore_discarded_relocs |
73d074b4 | 86 | PARAMS ((asection *)); |
c6e90b02 | 87 | static boolean elf32_mips_write_section |
73d074b4 | 88 | PARAMS ((bfd *, asection *, bfd_byte *)); |
c6e90b02 TS |
89 | static irix_compat_t elf32_mips_irix_compat |
90 | PARAMS ((bfd *)); | |
252b5132 | 91 | |
f7cb7d68 | 92 | extern const bfd_target bfd_elf32_tradbigmips_vec; |
fdbafa10 | 93 | extern const bfd_target bfd_elf32_tradlittlemips_vec; |
adb76a3e | 94 | |
a94a7c1c MM |
95 | /* Nonzero if ABFD is using the N32 ABI. */ |
96 | ||
97 | #define ABI_N32_P(abfd) \ | |
98 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
99 | ||
fdbafa10 | 100 | /* Nonzero if ABFD is using the 64-bit ABI. */ |
5e38c3b8 MM |
101 | #define ABI_64_P(abfd) \ |
102 | ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0) | |
103 | ||
c6e90b02 | 104 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) |
d75bc93d | 105 | |
4e8a9624 | 106 | /* Whether we are trying to be compatible with IRIX at all. */ |
a94a7c1c | 107 | #define SGI_COMPAT(abfd) \ |
c6e90b02 | 108 | (elf32_mips_irix_compat (abfd) != ict_none) |
103186c6 MM |
109 | |
110 | /* The size of an external REL relocation. */ | |
111 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
112 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
113 | ||
252b5132 RH |
114 | /* The number of local .got entries we reserve. */ |
115 | #define MIPS_RESERVED_GOTNO (2) | |
116 | ||
252b5132 RH |
117 | #if 0 |
118 | /* We no longer try to identify particular sections for the .dynsym | |
119 | section. When we do, we wind up crashing if there are other random | |
120 | sections with relocations. */ | |
121 | ||
122 | /* Names of sections which appear in the .dynsym section in an Irix 5 | |
123 | executable. */ | |
124 | ||
38b1a46c NC |
125 | static const char * const mips_elf_dynsym_sec_names[] = |
126 | { | |
252b5132 RH |
127 | ".text", |
128 | ".init", | |
129 | ".fini", | |
130 | ".data", | |
131 | ".rodata", | |
132 | ".sdata", | |
133 | ".sbss", | |
134 | ".bss", | |
135 | NULL | |
136 | }; | |
137 | ||
138 | #define SIZEOF_MIPS_DYNSYM_SECNAMES \ | |
139 | (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) | |
140 | ||
141 | /* The number of entries in mips_elf_dynsym_sec_names which go in the | |
142 | text segment. */ | |
143 | ||
144 | #define MIPS_TEXT_DYNSYM_SECNO (3) | |
145 | ||
146 | #endif /* 0 */ | |
147 | ||
148 | /* The names of the runtime procedure table symbols used on Irix 5. */ | |
149 | ||
38b1a46c NC |
150 | static const char * const mips_elf_dynsym_rtproc_names[] = |
151 | { | |
252b5132 RH |
152 | "_procedure_table", |
153 | "_procedure_string_table", | |
154 | "_procedure_table_size", | |
155 | NULL | |
156 | }; | |
157 | ||
158 | /* These structures are used to generate the .compact_rel section on | |
159 | Irix 5. */ | |
160 | ||
38b1a46c NC |
161 | typedef struct |
162 | { | |
252b5132 RH |
163 | unsigned long id1; /* Always one? */ |
164 | unsigned long num; /* Number of compact relocation entries. */ | |
165 | unsigned long id2; /* Always two? */ | |
166 | unsigned long offset; /* The file offset of the first relocation. */ | |
167 | unsigned long reserved0; /* Zero? */ | |
168 | unsigned long reserved1; /* Zero? */ | |
169 | } Elf32_compact_rel; | |
170 | ||
38b1a46c NC |
171 | typedef struct |
172 | { | |
252b5132 RH |
173 | bfd_byte id1[4]; |
174 | bfd_byte num[4]; | |
175 | bfd_byte id2[4]; | |
176 | bfd_byte offset[4]; | |
177 | bfd_byte reserved0[4]; | |
178 | bfd_byte reserved1[4]; | |
179 | } Elf32_External_compact_rel; | |
180 | ||
38b1a46c NC |
181 | typedef struct |
182 | { | |
252b5132 | 183 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
be3ccd9c | 184 | unsigned int rtype : 4; /* Relocation types. See below. */ |
252b5132 RH |
185 | unsigned int dist2to : 8; |
186 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
187 | unsigned long konst; /* KONST field. See below. */ | |
188 | unsigned long vaddr; /* VADDR to be relocated. */ | |
189 | } Elf32_crinfo; | |
190 | ||
38b1a46c NC |
191 | typedef struct |
192 | { | |
252b5132 | 193 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
be3ccd9c | 194 | unsigned int rtype : 4; /* Relocation types. See below. */ |
252b5132 RH |
195 | unsigned int dist2to : 8; |
196 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
197 | unsigned long konst; /* KONST field. See below. */ | |
198 | } Elf32_crinfo2; | |
199 | ||
38b1a46c NC |
200 | typedef struct |
201 | { | |
252b5132 RH |
202 | bfd_byte info[4]; |
203 | bfd_byte konst[4]; | |
204 | bfd_byte vaddr[4]; | |
205 | } Elf32_External_crinfo; | |
206 | ||
38b1a46c NC |
207 | typedef struct |
208 | { | |
252b5132 RH |
209 | bfd_byte info[4]; |
210 | bfd_byte konst[4]; | |
211 | } Elf32_External_crinfo2; | |
212 | ||
213 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
214 | ||
215 | #define CRINFO_CTYPE (0x1) | |
216 | #define CRINFO_CTYPE_SH (31) | |
217 | #define CRINFO_RTYPE (0xf) | |
218 | #define CRINFO_RTYPE_SH (27) | |
219 | #define CRINFO_DIST2TO (0xff) | |
220 | #define CRINFO_DIST2TO_SH (19) | |
221 | #define CRINFO_RELVADDR (0x7ffff) | |
222 | #define CRINFO_RELVADDR_SH (0) | |
223 | ||
224 | /* A compact relocation info has long (3 words) or short (2 words) | |
225 | formats. A short format doesn't have VADDR field and relvaddr | |
226 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
227 | #define CRF_MIPS_LONG 1 | |
228 | #define CRF_MIPS_SHORT 0 | |
229 | ||
230 | /* There are 4 types of compact relocation at least. The value KONST | |
231 | has different meaning for each type: | |
232 | ||
233 | (type) (konst) | |
234 | CT_MIPS_REL32 Address in data | |
235 | CT_MIPS_WORD Address in word (XXX) | |
236 | CT_MIPS_GPHI_LO GP - vaddr | |
237 | CT_MIPS_JMPAD Address to jump | |
238 | */ | |
239 | ||
240 | #define CRT_MIPS_REL32 0xa | |
241 | #define CRT_MIPS_WORD 0xb | |
242 | #define CRT_MIPS_GPHI_LO 0xc | |
243 | #define CRT_MIPS_JMPAD 0xd | |
244 | ||
245 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
246 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
247 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
248 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
249 | ||
3f830999 MM |
250 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
251 | from smaller values. Start with zero, widen, *then* decrement. */ | |
252 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
253 | ||
d75bc93d TS |
254 | /* The relocation table used for SHT_REL sections. */ |
255 | ||
256 | static reloc_howto_type elf_mips_howto_table_rel[] = | |
257 | { | |
258 | /* No relocation. */ | |
259 | HOWTO (R_MIPS_NONE, /* type */ | |
260 | 0, /* rightshift */ | |
261 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
262 | 0, /* bitsize */ | |
263 | false, /* pc_relative */ | |
264 | 0, /* bitpos */ | |
265 | complain_overflow_dont, /* complain_on_overflow */ | |
266 | bfd_elf_generic_reloc, /* special_function */ | |
267 | "R_MIPS_NONE", /* name */ | |
268 | false, /* partial_inplace */ | |
269 | 0, /* src_mask */ | |
270 | 0, /* dst_mask */ | |
271 | false), /* pcrel_offset */ | |
272 | ||
273 | /* 16 bit relocation. */ | |
274 | HOWTO (R_MIPS_16, /* type */ | |
275 | 0, /* rightshift */ | |
276 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
277 | 16, /* bitsize */ | |
278 | false, /* pc_relative */ | |
279 | 0, /* bitpos */ | |
280 | complain_overflow_signed, /* complain_on_overflow */ | |
281 | bfd_elf_generic_reloc, /* special_function */ | |
282 | "R_MIPS_16", /* name */ | |
283 | true, /* partial_inplace */ | |
284 | 0x0000ffff, /* src_mask */ | |
285 | 0x0000ffff, /* dst_mask */ | |
286 | false), /* pcrel_offset */ | |
287 | ||
288 | /* 32 bit relocation. */ | |
289 | HOWTO (R_MIPS_32, /* type */ | |
290 | 0, /* rightshift */ | |
291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
292 | 32, /* bitsize */ | |
293 | false, /* pc_relative */ | |
294 | 0, /* bitpos */ | |
295 | complain_overflow_dont, /* complain_on_overflow */ | |
296 | bfd_elf_generic_reloc, /* special_function */ | |
297 | "R_MIPS_32", /* name */ | |
298 | true, /* partial_inplace */ | |
299 | 0xffffffff, /* src_mask */ | |
300 | 0xffffffff, /* dst_mask */ | |
301 | false), /* pcrel_offset */ | |
302 | ||
303 | /* 32 bit symbol relative relocation. */ | |
304 | HOWTO (R_MIPS_REL32, /* type */ | |
305 | 0, /* rightshift */ | |
306 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
307 | 32, /* bitsize */ | |
308 | false, /* pc_relative */ | |
309 | 0, /* bitpos */ | |
310 | complain_overflow_dont, /* complain_on_overflow */ | |
311 | bfd_elf_generic_reloc, /* special_function */ | |
312 | "R_MIPS_REL32", /* name */ | |
313 | true, /* partial_inplace */ | |
314 | 0xffffffff, /* src_mask */ | |
315 | 0xffffffff, /* dst_mask */ | |
316 | false), /* pcrel_offset */ | |
317 | ||
318 | /* 26 bit jump address. */ | |
319 | HOWTO (R_MIPS_26, /* type */ | |
320 | 2, /* rightshift */ | |
321 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
322 | 26, /* bitsize */ | |
323 | false, /* pc_relative */ | |
324 | 0, /* bitpos */ | |
325 | complain_overflow_dont, /* complain_on_overflow */ | |
326 | /* This needs complex overflow | |
327 | detection, because the upper four | |
328 | bits must match the PC + 4. */ | |
329 | bfd_elf_generic_reloc, /* special_function */ | |
330 | "R_MIPS_26", /* name */ | |
331 | true, /* partial_inplace */ | |
332 | 0x03ffffff, /* src_mask */ | |
333 | 0x03ffffff, /* dst_mask */ | |
334 | false), /* pcrel_offset */ | |
335 | ||
336 | /* High 16 bits of symbol value. */ | |
337 | HOWTO (R_MIPS_HI16, /* type */ | |
338 | 0, /* rightshift */ | |
339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
340 | 16, /* bitsize */ | |
341 | false, /* pc_relative */ | |
342 | 0, /* bitpos */ | |
343 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 344 | mips_elf_hi16_reloc, /* special_function */ |
d75bc93d TS |
345 | "R_MIPS_HI16", /* name */ |
346 | true, /* partial_inplace */ | |
347 | 0x0000ffff, /* src_mask */ | |
348 | 0x0000ffff, /* dst_mask */ | |
349 | false), /* pcrel_offset */ | |
350 | ||
351 | /* Low 16 bits of symbol value. */ | |
352 | HOWTO (R_MIPS_LO16, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 16, /* bitsize */ | |
356 | false, /* pc_relative */ | |
357 | 0, /* bitpos */ | |
358 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 359 | mips_elf_lo16_reloc, /* special_function */ |
d75bc93d TS |
360 | "R_MIPS_LO16", /* name */ |
361 | true, /* partial_inplace */ | |
362 | 0x0000ffff, /* src_mask */ | |
363 | 0x0000ffff, /* dst_mask */ | |
364 | false), /* pcrel_offset */ | |
365 | ||
366 | /* GP relative reference. */ | |
367 | HOWTO (R_MIPS_GPREL16, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 16, /* bitsize */ | |
371 | false, /* pc_relative */ | |
372 | 0, /* bitpos */ | |
373 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 374 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
d75bc93d TS |
375 | "R_MIPS_GPREL16", /* name */ |
376 | true, /* partial_inplace */ | |
377 | 0x0000ffff, /* src_mask */ | |
378 | 0x0000ffff, /* dst_mask */ | |
379 | false), /* pcrel_offset */ | |
380 | ||
381 | /* Reference to literal section. */ | |
382 | HOWTO (R_MIPS_LITERAL, /* type */ | |
383 | 0, /* rightshift */ | |
384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
385 | 16, /* bitsize */ | |
386 | false, /* pc_relative */ | |
387 | 0, /* bitpos */ | |
388 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 389 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
d75bc93d TS |
390 | "R_MIPS_LITERAL", /* name */ |
391 | true, /* partial_inplace */ | |
392 | 0x0000ffff, /* src_mask */ | |
393 | 0x0000ffff, /* dst_mask */ | |
394 | false), /* pcrel_offset */ | |
395 | ||
396 | /* Reference to global offset table. */ | |
397 | HOWTO (R_MIPS_GOT16, /* type */ | |
398 | 0, /* rightshift */ | |
399 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
400 | 16, /* bitsize */ | |
401 | false, /* pc_relative */ | |
402 | 0, /* bitpos */ | |
403 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 | 404 | mips_elf_got16_reloc, /* special_function */ |
d75bc93d TS |
405 | "R_MIPS_GOT16", /* name */ |
406 | true, /* partial_inplace */ | |
407 | 0x0000ffff, /* src_mask */ | |
408 | 0x0000ffff, /* dst_mask */ | |
409 | false), /* pcrel_offset */ | |
410 | ||
411 | /* 16 bit PC relative reference. */ | |
412 | HOWTO (R_MIPS_PC16, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 16, /* bitsize */ | |
416 | true, /* pc_relative */ | |
417 | 0, /* bitpos */ | |
418 | complain_overflow_signed, /* complain_on_overflow */ | |
419 | bfd_elf_generic_reloc, /* special_function */ | |
420 | "R_MIPS_PC16", /* name */ | |
421 | true, /* partial_inplace */ | |
422 | 0x0000ffff, /* src_mask */ | |
423 | 0x0000ffff, /* dst_mask */ | |
424 | true), /* pcrel_offset */ | |
425 | ||
426 | /* 16 bit call through global offset table. */ | |
427 | HOWTO (R_MIPS_CALL16, /* type */ | |
428 | 0, /* rightshift */ | |
429 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 16, /* bitsize */ | |
431 | false, /* pc_relative */ | |
432 | 0, /* bitpos */ | |
433 | complain_overflow_signed, /* complain_on_overflow */ | |
434 | bfd_elf_generic_reloc, /* special_function */ | |
435 | "R_MIPS_CALL16", /* name */ | |
436 | true, /* partial_inplace */ | |
437 | 0x0000ffff, /* src_mask */ | |
438 | 0x0000ffff, /* dst_mask */ | |
439 | false), /* pcrel_offset */ | |
440 | ||
441 | /* 32 bit GP relative reference. */ | |
442 | HOWTO (R_MIPS_GPREL32, /* type */ | |
443 | 0, /* rightshift */ | |
444 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 32, /* bitsize */ | |
446 | false, /* pc_relative */ | |
447 | 0, /* bitpos */ | |
448 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 | 449 | mips_elf_gprel32_reloc, /* special_function */ |
d75bc93d TS |
450 | "R_MIPS_GPREL32", /* name */ |
451 | true, /* partial_inplace */ | |
452 | 0xffffffff, /* src_mask */ | |
453 | 0xffffffff, /* dst_mask */ | |
454 | false), /* pcrel_offset */ | |
455 | ||
456 | /* The remaining relocs are defined on Irix 5, although they are | |
457 | not defined by the ABI. */ | |
458 | EMPTY_HOWTO (13), | |
459 | EMPTY_HOWTO (14), | |
460 | EMPTY_HOWTO (15), | |
461 | ||
462 | /* A 5 bit shift field. */ | |
463 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
464 | 0, /* rightshift */ | |
465 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
466 | 5, /* bitsize */ | |
467 | false, /* pc_relative */ | |
468 | 6, /* bitpos */ | |
469 | complain_overflow_bitfield, /* complain_on_overflow */ | |
470 | bfd_elf_generic_reloc, /* special_function */ | |
471 | "R_MIPS_SHIFT5", /* name */ | |
472 | true, /* partial_inplace */ | |
473 | 0x000007c0, /* src_mask */ | |
474 | 0x000007c0, /* dst_mask */ | |
475 | false), /* pcrel_offset */ | |
476 | ||
477 | /* A 6 bit shift field. */ | |
478 | /* FIXME: This is not handled correctly; a special function is | |
479 | needed to put the most significant bit in the right place. */ | |
480 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
481 | 0, /* rightshift */ | |
482 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
483 | 6, /* bitsize */ | |
484 | false, /* pc_relative */ | |
485 | 6, /* bitpos */ | |
486 | complain_overflow_bitfield, /* complain_on_overflow */ | |
487 | bfd_elf_generic_reloc, /* special_function */ | |
488 | "R_MIPS_SHIFT6", /* name */ | |
489 | true, /* partial_inplace */ | |
490 | 0x000007c4, /* src_mask */ | |
491 | 0x000007c4, /* dst_mask */ | |
492 | false), /* pcrel_offset */ | |
493 | ||
494 | /* A 64 bit relocation. */ | |
495 | HOWTO (R_MIPS_64, /* type */ | |
496 | 0, /* rightshift */ | |
497 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
498 | 64, /* bitsize */ | |
499 | false, /* pc_relative */ | |
500 | 0, /* bitpos */ | |
501 | complain_overflow_dont, /* complain_on_overflow */ | |
502 | mips32_64bit_reloc, /* special_function */ | |
503 | "R_MIPS_64", /* name */ | |
504 | true, /* partial_inplace */ | |
505 | MINUS_ONE, /* src_mask */ | |
506 | MINUS_ONE, /* dst_mask */ | |
507 | false), /* pcrel_offset */ | |
508 | ||
509 | /* Displacement in the global offset table. */ | |
510 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
511 | 0, /* rightshift */ | |
512 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
513 | 16, /* bitsize */ | |
514 | false, /* pc_relative */ | |
515 | 0, /* bitpos */ | |
516 | complain_overflow_signed, /* complain_on_overflow */ | |
517 | bfd_elf_generic_reloc, /* special_function */ | |
518 | "R_MIPS_GOT_DISP", /* name */ | |
519 | true, /* partial_inplace */ | |
520 | 0x0000ffff, /* src_mask */ | |
521 | 0x0000ffff, /* dst_mask */ | |
522 | false), /* pcrel_offset */ | |
523 | ||
524 | /* Displacement to page pointer in the global offset table. */ | |
525 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
526 | 0, /* rightshift */ | |
527 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
528 | 16, /* bitsize */ | |
529 | false, /* pc_relative */ | |
530 | 0, /* bitpos */ | |
531 | complain_overflow_signed, /* complain_on_overflow */ | |
532 | bfd_elf_generic_reloc, /* special_function */ | |
533 | "R_MIPS_GOT_PAGE", /* name */ | |
534 | true, /* partial_inplace */ | |
535 | 0x0000ffff, /* src_mask */ | |
536 | 0x0000ffff, /* dst_mask */ | |
537 | false), /* pcrel_offset */ | |
538 | ||
539 | /* Offset from page pointer in the global offset table. */ | |
540 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 16, /* bitsize */ | |
544 | false, /* pc_relative */ | |
545 | 0, /* bitpos */ | |
546 | complain_overflow_signed, /* complain_on_overflow */ | |
547 | bfd_elf_generic_reloc, /* special_function */ | |
548 | "R_MIPS_GOT_OFST", /* name */ | |
549 | true, /* partial_inplace */ | |
550 | 0x0000ffff, /* src_mask */ | |
551 | 0x0000ffff, /* dst_mask */ | |
552 | false), /* pcrel_offset */ | |
553 | ||
554 | /* High 16 bits of displacement in global offset table. */ | |
555 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
556 | 0, /* rightshift */ | |
557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
558 | 16, /* bitsize */ | |
559 | false, /* pc_relative */ | |
560 | 0, /* bitpos */ | |
561 | complain_overflow_dont, /* complain_on_overflow */ | |
562 | bfd_elf_generic_reloc, /* special_function */ | |
563 | "R_MIPS_GOT_HI16", /* name */ | |
564 | true, /* partial_inplace */ | |
565 | 0x0000ffff, /* src_mask */ | |
566 | 0x0000ffff, /* dst_mask */ | |
567 | false), /* pcrel_offset */ | |
568 | ||
569 | /* Low 16 bits of displacement in global offset table. */ | |
570 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
571 | 0, /* rightshift */ | |
572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 16, /* bitsize */ | |
574 | false, /* pc_relative */ | |
575 | 0, /* bitpos */ | |
576 | complain_overflow_dont, /* complain_on_overflow */ | |
577 | bfd_elf_generic_reloc, /* special_function */ | |
578 | "R_MIPS_GOT_LO16", /* name */ | |
579 | true, /* partial_inplace */ | |
580 | 0x0000ffff, /* src_mask */ | |
581 | 0x0000ffff, /* dst_mask */ | |
582 | false), /* pcrel_offset */ | |
583 | ||
584 | /* 64 bit subtraction. Used in the N32 ABI. */ | |
585 | HOWTO (R_MIPS_SUB, /* type */ | |
586 | 0, /* rightshift */ | |
587 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
588 | 64, /* bitsize */ | |
589 | false, /* pc_relative */ | |
590 | 0, /* bitpos */ | |
591 | complain_overflow_dont, /* complain_on_overflow */ | |
592 | bfd_elf_generic_reloc, /* special_function */ | |
593 | "R_MIPS_SUB", /* name */ | |
594 | true, /* partial_inplace */ | |
595 | MINUS_ONE, /* src_mask */ | |
596 | MINUS_ONE, /* dst_mask */ | |
597 | false), /* pcrel_offset */ | |
598 | ||
599 | /* Used to cause the linker to insert and delete instructions? */ | |
600 | EMPTY_HOWTO (R_MIPS_INSERT_A), | |
601 | EMPTY_HOWTO (R_MIPS_INSERT_B), | |
602 | EMPTY_HOWTO (R_MIPS_DELETE), | |
603 | ||
604 | /* Get the higher value of a 64 bit addend. */ | |
605 | HOWTO (R_MIPS_HIGHER, /* type */ | |
606 | 0, /* rightshift */ | |
607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
608 | 16, /* bitsize */ | |
609 | false, /* pc_relative */ | |
610 | 0, /* bitpos */ | |
611 | complain_overflow_dont, /* complain_on_overflow */ | |
612 | bfd_elf_generic_reloc, /* special_function */ | |
613 | "R_MIPS_HIGHER", /* name */ | |
614 | true, /* partial_inplace */ | |
615 | 0x0000ffff, /* src_mask */ | |
616 | 0x0000ffff, /* dst_mask */ | |
617 | false), /* pcrel_offset */ | |
618 | ||
619 | /* Get the highest value of a 64 bit addend. */ | |
620 | HOWTO (R_MIPS_HIGHEST, /* type */ | |
621 | 0, /* rightshift */ | |
622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
623 | 16, /* bitsize */ | |
624 | false, /* pc_relative */ | |
625 | 0, /* bitpos */ | |
626 | complain_overflow_dont, /* complain_on_overflow */ | |
627 | bfd_elf_generic_reloc, /* special_function */ | |
628 | "R_MIPS_HIGHEST", /* name */ | |
629 | true, /* partial_inplace */ | |
630 | 0x0000ffff, /* src_mask */ | |
631 | 0x0000ffff, /* dst_mask */ | |
632 | false), /* pcrel_offset */ | |
633 | ||
634 | /* High 16 bits of displacement in global offset table. */ | |
635 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
636 | 0, /* rightshift */ | |
637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
638 | 16, /* bitsize */ | |
639 | false, /* pc_relative */ | |
640 | 0, /* bitpos */ | |
641 | complain_overflow_dont, /* complain_on_overflow */ | |
642 | bfd_elf_generic_reloc, /* special_function */ | |
643 | "R_MIPS_CALL_HI16", /* name */ | |
644 | true, /* partial_inplace */ | |
645 | 0x0000ffff, /* src_mask */ | |
646 | 0x0000ffff, /* dst_mask */ | |
647 | false), /* pcrel_offset */ | |
648 | ||
649 | /* Low 16 bits of displacement in global offset table. */ | |
650 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 16, /* bitsize */ | |
654 | false, /* pc_relative */ | |
655 | 0, /* bitpos */ | |
656 | complain_overflow_dont, /* complain_on_overflow */ | |
657 | bfd_elf_generic_reloc, /* special_function */ | |
658 | "R_MIPS_CALL_LO16", /* name */ | |
659 | true, /* partial_inplace */ | |
660 | 0x0000ffff, /* src_mask */ | |
661 | 0x0000ffff, /* dst_mask */ | |
662 | false), /* pcrel_offset */ | |
663 | ||
664 | /* Section displacement. */ | |
665 | HOWTO (R_MIPS_SCN_DISP, /* type */ | |
666 | 0, /* rightshift */ | |
667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 32, /* bitsize */ | |
669 | false, /* pc_relative */ | |
670 | 0, /* bitpos */ | |
671 | complain_overflow_dont, /* complain_on_overflow */ | |
672 | bfd_elf_generic_reloc, /* special_function */ | |
673 | "R_MIPS_SCN_DISP", /* name */ | |
674 | true, /* partial_inplace */ | |
675 | 0xffffffff, /* src_mask */ | |
676 | 0xffffffff, /* dst_mask */ | |
677 | false), /* pcrel_offset */ | |
678 | ||
679 | EMPTY_HOWTO (R_MIPS_REL16), | |
680 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), | |
681 | EMPTY_HOWTO (R_MIPS_PJUMP), | |
682 | EMPTY_HOWTO (R_MIPS_RELGOT), | |
683 | ||
684 | /* Protected jump conversion. This is an optimization hint. No | |
685 | relocation is required for correctness. */ | |
686 | HOWTO (R_MIPS_JALR, /* type */ | |
687 | 0, /* rightshift */ | |
688 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
689 | 32, /* bitsize */ | |
690 | false, /* pc_relative */ | |
691 | 0, /* bitpos */ | |
692 | complain_overflow_dont, /* complain_on_overflow */ | |
693 | bfd_elf_generic_reloc, /* special_function */ | |
694 | "R_MIPS_JALR", /* name */ | |
695 | false, /* partial_inplace */ | |
696 | 0x00000000, /* src_mask */ | |
697 | 0x00000000, /* dst_mask */ | |
698 | false), /* pcrel_offset */ | |
699 | }; | |
700 | ||
c6e90b02 TS |
701 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This |
702 | is a hack to make the linker think that we need 64 bit values. */ | |
703 | static reloc_howto_type elf_mips_ctor64_howto = | |
704 | HOWTO (R_MIPS_64, /* type */ | |
252b5132 | 705 | 0, /* rightshift */ |
c6e90b02 | 706 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
707 | 32, /* bitsize */ |
708 | false, /* pc_relative */ | |
709 | 0, /* bitpos */ | |
c6e90b02 TS |
710 | complain_overflow_signed, /* complain_on_overflow */ |
711 | mips32_64bit_reloc, /* special_function */ | |
712 | "R_MIPS_64", /* name */ | |
713 | true, /* partial_inplace */ | |
714 | 0xffffffff, /* src_mask */ | |
252b5132 | 715 | 0xffffffff, /* dst_mask */ |
c6e90b02 | 716 | false); /* pcrel_offset */ |
252b5132 | 717 | |
c6e90b02 TS |
718 | /* The reloc used for the mips16 jump instruction. */ |
719 | static reloc_howto_type elf_mips16_jump_howto = | |
720 | HOWTO (R_MIPS16_26, /* type */ | |
252b5132 RH |
721 | 2, /* rightshift */ |
722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 26, /* bitsize */ | |
724 | false, /* pc_relative */ | |
725 | 0, /* bitpos */ | |
726 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
727 | /* This needs complex overflow |
728 | detection, because the upper four | |
729 | bits must match the PC. */ | |
730 | mips16_jump_reloc, /* special_function */ | |
731 | "R_MIPS16_26", /* name */ | |
732 | true, /* partial_inplace */ | |
733 | 0x3ffffff, /* src_mask */ | |
734 | 0x3ffffff, /* dst_mask */ | |
735 | false); /* pcrel_offset */ | |
252b5132 | 736 | |
c6e90b02 TS |
737 | /* The reloc used for the mips16 gprel instruction. */ |
738 | static reloc_howto_type elf_mips16_gprel_howto = | |
739 | HOWTO (R_MIPS16_GPREL, /* type */ | |
252b5132 RH |
740 | 0, /* rightshift */ |
741 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
742 | 16, /* bitsize */ | |
743 | false, /* pc_relative */ | |
744 | 0, /* bitpos */ | |
c6e90b02 TS |
745 | complain_overflow_signed, /* complain_on_overflow */ |
746 | mips16_gprel_reloc, /* special_function */ | |
747 | "R_MIPS16_GPREL", /* name */ | |
748 | true, /* partial_inplace */ | |
749 | 0x07ff001f, /* src_mask */ | |
750 | 0x07ff001f, /* dst_mask */ | |
751 | false); /* pcrel_offset */ | |
252b5132 | 752 | |
c6e90b02 TS |
753 | /* GNU extensions for embedded-pic. */ |
754 | /* High 16 bits of symbol value, pc-relative. */ | |
755 | static reloc_howto_type elf_mips_gnu_rel_hi16 = | |
756 | HOWTO (R_MIPS_GNU_REL_HI16, /* type */ | |
252b5132 RH |
757 | 0, /* rightshift */ |
758 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
759 | 16, /* bitsize */ | |
c6e90b02 | 760 | true, /* pc_relative */ |
252b5132 RH |
761 | 0, /* bitpos */ |
762 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
763 | mips_elf_hi16_reloc, /* special_function */ |
764 | "R_MIPS_GNU_REL_HI16", /* name */ | |
765 | true, /* partial_inplace */ | |
766 | 0xffff, /* src_mask */ | |
767 | 0xffff, /* dst_mask */ | |
768 | true); /* pcrel_offset */ | |
252b5132 | 769 | |
c6e90b02 TS |
770 | /* Low 16 bits of symbol value, pc-relative. */ |
771 | static reloc_howto_type elf_mips_gnu_rel_lo16 = | |
772 | HOWTO (R_MIPS_GNU_REL_LO16, /* type */ | |
252b5132 RH |
773 | 0, /* rightshift */ |
774 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
775 | 16, /* bitsize */ | |
c6e90b02 | 776 | true, /* pc_relative */ |
252b5132 | 777 | 0, /* bitpos */ |
c6e90b02 TS |
778 | complain_overflow_dont, /* complain_on_overflow */ |
779 | mips_elf_lo16_reloc, /* special_function */ | |
780 | "R_MIPS_GNU_REL_LO16", /* name */ | |
781 | true, /* partial_inplace */ | |
782 | 0xffff, /* src_mask */ | |
783 | 0xffff, /* dst_mask */ | |
784 | true); /* pcrel_offset */ | |
252b5132 | 785 | |
c6e90b02 TS |
786 | /* 16 bit offset for pc-relative branches. */ |
787 | static reloc_howto_type elf_mips_gnu_rel16_s2 = | |
788 | HOWTO (R_MIPS_GNU_REL16_S2, /* type */ | |
789 | 2, /* rightshift */ | |
252b5132 RH |
790 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
791 | 16, /* bitsize */ | |
c6e90b02 | 792 | true, /* pc_relative */ |
252b5132 RH |
793 | 0, /* bitpos */ |
794 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 TS |
795 | bfd_elf_generic_reloc, /* special_function */ |
796 | "R_MIPS_GNU_REL16_S2", /* name */ | |
797 | true, /* partial_inplace */ | |
798 | 0xffff, /* src_mask */ | |
799 | 0xffff, /* dst_mask */ | |
800 | true); /* pcrel_offset */ | |
252b5132 | 801 | |
c6e90b02 TS |
802 | /* 64 bit pc-relative. */ |
803 | static reloc_howto_type elf_mips_gnu_pcrel64 = | |
804 | HOWTO (R_MIPS_PC64, /* type */ | |
252b5132 | 805 | 0, /* rightshift */ |
c6e90b02 TS |
806 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
807 | 64, /* bitsize */ | |
808 | true, /* pc_relative */ | |
252b5132 RH |
809 | 0, /* bitpos */ |
810 | complain_overflow_signed, /* complain_on_overflow */ | |
c6e90b02 TS |
811 | bfd_elf_generic_reloc, /* special_function */ |
812 | "R_MIPS_PC64", /* name */ | |
813 | true, /* partial_inplace */ | |
814 | MINUS_ONE, /* src_mask */ | |
815 | MINUS_ONE, /* dst_mask */ | |
816 | true); /* pcrel_offset */ | |
252b5132 | 817 | |
c6e90b02 TS |
818 | /* 32 bit pc-relative. */ |
819 | static reloc_howto_type elf_mips_gnu_pcrel32 = | |
820 | HOWTO (R_MIPS_PC32, /* type */ | |
252b5132 RH |
821 | 0, /* rightshift */ |
822 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 823 | 32, /* bitsize */ |
252b5132 RH |
824 | true, /* pc_relative */ |
825 | 0, /* bitpos */ | |
826 | complain_overflow_signed, /* complain_on_overflow */ | |
827 | bfd_elf_generic_reloc, /* special_function */ | |
c6e90b02 TS |
828 | "R_MIPS_PC32", /* name */ |
829 | true, /* partial_inplace */ | |
830 | 0xffffffff, /* src_mask */ | |
831 | 0xffffffff, /* dst_mask */ | |
832 | true); /* pcrel_offset */ | |
252b5132 | 833 | |
c6e90b02 TS |
834 | /* GNU extension to record C++ vtable hierarchy */ |
835 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = | |
836 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ | |
252b5132 RH |
837 | 0, /* rightshift */ |
838 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 839 | 0, /* bitsize */ |
252b5132 RH |
840 | false, /* pc_relative */ |
841 | 0, /* bitpos */ | |
c6e90b02 TS |
842 | complain_overflow_dont, /* complain_on_overflow */ |
843 | NULL, /* special_function */ | |
844 | "R_MIPS_GNU_VTINHERIT", /* name */ | |
252b5132 | 845 | false, /* partial_inplace */ |
d75bc93d | 846 | 0, /* src_mask */ |
c6e90b02 TS |
847 | 0, /* dst_mask */ |
848 | false); /* pcrel_offset */ | |
252b5132 | 849 | |
c6e90b02 TS |
850 | /* GNU extension to record C++ vtable member usage */ |
851 | static reloc_howto_type elf_mips_gnu_vtentry_howto = | |
852 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ | |
252b5132 RH |
853 | 0, /* rightshift */ |
854 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c6e90b02 | 855 | 0, /* bitsize */ |
252b5132 RH |
856 | false, /* pc_relative */ |
857 | 0, /* bitpos */ | |
858 | complain_overflow_dont, /* complain_on_overflow */ | |
c6e90b02 TS |
859 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
860 | "R_MIPS_GNU_VTENTRY", /* name */ | |
d75bc93d TS |
861 | false, /* partial_inplace */ |
862 | 0, /* src_mask */ | |
c6e90b02 TS |
863 | 0, /* dst_mask */ |
864 | false); /* pcrel_offset */ | |
252b5132 RH |
865 | |
866 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination | |
c6e90b02 TS |
867 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to |
868 | the HI16. Here we just save the information we need; we do the | |
869 | actual relocation when we see the LO16. | |
c6142e5d | 870 | |
c6e90b02 TS |
871 | MIPS ELF requires that the LO16 immediately follow the HI16. As a |
872 | GNU extension, for non-pc-relative relocations, we permit an | |
873 | arbitrary number of HI16 relocs to be associated with a single LO16 | |
874 | reloc. This extension permits gcc to output the HI and LO relocs | |
875 | itself. | |
c6142e5d | 876 | |
c6e90b02 TS |
877 | This cannot be done for PC-relative relocations because both the HI16 |
878 | and LO16 parts of the relocations must be done relative to the LO16 | |
879 | part, and there can be carry to or borrow from the HI16 part. */ | |
103186c6 | 880 | |
c6e90b02 | 881 | struct mips_hi16 |
103186c6 | 882 | { |
c6e90b02 TS |
883 | struct mips_hi16 *next; |
884 | bfd_byte *addr; | |
885 | bfd_vma addend; | |
886 | }; | |
be3ccd9c | 887 | |
c6e90b02 | 888 | /* FIXME: This should not be a static variable. */ |
103186c6 | 889 | |
c6e90b02 | 890 | static struct mips_hi16 *mips_hi16_list; |
252b5132 | 891 | |
c6e90b02 TS |
892 | static bfd_reloc_status_type |
893 | mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
894 | output_bfd, error_message) | |
895 | bfd *abfd ATTRIBUTE_UNUSED; | |
896 | arelent *reloc_entry; | |
897 | asymbol *symbol; | |
898 | PTR data; | |
899 | asection *input_section; | |
900 | bfd *output_bfd; | |
901 | char **error_message; | |
252b5132 | 902 | { |
c6e90b02 TS |
903 | bfd_reloc_status_type ret; |
904 | bfd_vma relocation; | |
905 | struct mips_hi16 *n; | |
252b5132 | 906 | |
c6e90b02 TS |
907 | /* If we're relocating, and this an external symbol, we don't want |
908 | to change anything. */ | |
909 | if (output_bfd != (bfd *) NULL | |
910 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
911 | && reloc_entry->addend == 0) | |
252b5132 | 912 | { |
c6e90b02 TS |
913 | reloc_entry->address += input_section->output_offset; |
914 | return bfd_reloc_ok; | |
252b5132 | 915 | } |
252b5132 | 916 | |
c6e90b02 | 917 | ret = bfd_reloc_ok; |
252b5132 | 918 | |
c6e90b02 TS |
919 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
920 | { | |
921 | boolean relocateable; | |
922 | bfd_vma gp; | |
252b5132 | 923 | |
c6e90b02 TS |
924 | if (ret == bfd_reloc_undefined) |
925 | abort (); | |
252b5132 | 926 | |
c6e90b02 TS |
927 | if (output_bfd != NULL) |
928 | relocateable = true; | |
252b5132 | 929 | else |
252b5132 | 930 | { |
c6e90b02 TS |
931 | relocateable = false; |
932 | output_bfd = symbol->section->output_section->owner; | |
252b5132 RH |
933 | } |
934 | ||
c6e90b02 TS |
935 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
936 | error_message, &gp); | |
937 | if (ret != bfd_reloc_ok) | |
938 | return ret; | |
252b5132 | 939 | |
c6e90b02 | 940 | relocation = gp - reloc_entry->address; |
252b5132 RH |
941 | } |
942 | else | |
943 | { | |
c6e90b02 TS |
944 | if (bfd_is_und_section (symbol->section) |
945 | && output_bfd == (bfd *) NULL) | |
946 | ret = bfd_reloc_undefined; | |
252b5132 | 947 | |
c6e90b02 TS |
948 | if (bfd_is_com_section (symbol->section)) |
949 | relocation = 0; | |
252b5132 | 950 | else |
c6e90b02 TS |
951 | relocation = symbol->value; |
952 | } | |
252b5132 | 953 | |
c6e90b02 TS |
954 | relocation += symbol->section->output_section->vma; |
955 | relocation += symbol->section->output_offset; | |
956 | relocation += reloc_entry->addend; | |
9117d219 | 957 | |
c6e90b02 TS |
958 | if (reloc_entry->address > input_section->_cooked_size) |
959 | return bfd_reloc_outofrange; | |
9117d219 | 960 | |
c6e90b02 TS |
961 | /* Save the information, and let LO16 do the actual relocation. */ |
962 | n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n); | |
963 | if (n == NULL) | |
964 | return bfd_reloc_outofrange; | |
965 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
966 | n->addend = relocation; | |
967 | n->next = mips_hi16_list; | |
968 | mips_hi16_list = n; | |
252b5132 | 969 | |
c6e90b02 TS |
970 | if (output_bfd != (bfd *) NULL) |
971 | reloc_entry->address += input_section->output_offset; | |
252b5132 | 972 | |
c6e90b02 | 973 | return ret; |
252b5132 RH |
974 | } |
975 | ||
c6e90b02 TS |
976 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit |
977 | inplace relocation; this function exists in order to do the | |
978 | R_MIPS_HI16 relocation described above. */ | |
252b5132 | 979 | |
c6e90b02 TS |
980 | static bfd_reloc_status_type |
981 | mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
982 | output_bfd, error_message) | |
252b5132 | 983 | bfd *abfd; |
c6e90b02 TS |
984 | arelent *reloc_entry; |
985 | asymbol *symbol; | |
986 | PTR data; | |
987 | asection *input_section; | |
988 | bfd *output_bfd; | |
989 | char **error_message; | |
252b5132 | 990 | { |
c6e90b02 | 991 | arelent gp_disp_relent; |
252b5132 | 992 | |
c6e90b02 | 993 | if (mips_hi16_list != NULL) |
252b5132 | 994 | { |
c6e90b02 | 995 | struct mips_hi16 *l; |
252b5132 | 996 | |
c6e90b02 TS |
997 | l = mips_hi16_list; |
998 | while (l != NULL) | |
999 | { | |
1000 | unsigned long insn; | |
1001 | unsigned long val; | |
1002 | unsigned long vallo; | |
1003 | struct mips_hi16 *next; | |
252b5132 | 1004 | |
c6e90b02 TS |
1005 | /* Do the HI16 relocation. Note that we actually don't need |
1006 | to know anything about the LO16 itself, except where to | |
1007 | find the low 16 bits of the addend needed by the LO16. */ | |
1008 | insn = bfd_get_32 (abfd, l->addr); | |
1009 | vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 1010 | |
c6e90b02 TS |
1011 | /* The low order 16 bits are always treated as a signed |
1012 | value. */ | |
1013 | vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000; | |
1014 | val = ((insn & 0xffff) << 16) + vallo; | |
1015 | val += l->addend; | |
252b5132 | 1016 | |
c6e90b02 TS |
1017 | /* If PC-relative, we need to subtract out the address of the LO |
1018 | half of the HI/LO. (The actual relocation is relative | |
1019 | to that instruction.) */ | |
1020 | if (reloc_entry->howto->pc_relative) | |
1021 | val -= reloc_entry->address; | |
252b5132 | 1022 | |
c6e90b02 TS |
1023 | /* At this point, "val" has the value of the combined HI/LO |
1024 | pair. If the low order 16 bits (which will be used for | |
1025 | the LO16 insn) are negative, then we will need an | |
1026 | adjustment for the high order 16 bits. */ | |
1027 | val += 0x8000; | |
1028 | val = (val >> 16) & 0xffff; | |
252b5132 | 1029 | |
c6e90b02 TS |
1030 | insn &= ~ (bfd_vma) 0xffff; |
1031 | insn |= val; | |
1032 | bfd_put_32 (abfd, (bfd_vma) insn, l->addr); | |
8a20f077 | 1033 | |
c6e90b02 TS |
1034 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
1035 | { | |
1036 | gp_disp_relent = *reloc_entry; | |
1037 | reloc_entry = &gp_disp_relent; | |
1038 | reloc_entry->addend = l->addend; | |
1039 | } | |
8a20f077 | 1040 | |
c6e90b02 TS |
1041 | next = l->next; |
1042 | free (l); | |
1043 | l = next; | |
1044 | } | |
252b5132 | 1045 | |
c6e90b02 | 1046 | mips_hi16_list = NULL; |
43917054 | 1047 | } |
c6e90b02 | 1048 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
252b5132 | 1049 | { |
c6e90b02 TS |
1050 | bfd_reloc_status_type ret; |
1051 | bfd_vma gp, relocation; | |
252b5132 | 1052 | |
c6e90b02 | 1053 | /* FIXME: Does this case ever occur? */ |
252b5132 | 1054 | |
c6e90b02 TS |
1055 | ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); |
1056 | if (ret != bfd_reloc_ok) | |
1057 | return ret; | |
252b5132 | 1058 | |
c6e90b02 TS |
1059 | relocation = gp - reloc_entry->address; |
1060 | relocation += symbol->section->output_section->vma; | |
1061 | relocation += symbol->section->output_offset; | |
1062 | relocation += reloc_entry->addend; | |
252b5132 | 1063 | |
c6e90b02 TS |
1064 | if (reloc_entry->address > input_section->_cooked_size) |
1065 | return bfd_reloc_outofrange; | |
252b5132 | 1066 | |
c6e90b02 TS |
1067 | gp_disp_relent = *reloc_entry; |
1068 | reloc_entry = &gp_disp_relent; | |
1069 | reloc_entry->addend = relocation - 4; | |
252b5132 RH |
1070 | } |
1071 | ||
c6e90b02 TS |
1072 | /* Now do the LO16 reloc in the usual way. */ |
1073 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1074 | input_section, output_bfd, error_message); | |
252b5132 RH |
1075 | } |
1076 | ||
c6e90b02 TS |
1077 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
1078 | table used for PIC code. If the symbol is an external symbol, the | |
1079 | instruction is modified to contain the offset of the appropriate | |
1080 | entry in the global offset table. If the symbol is a section | |
1081 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
1082 | addends are combined to form the real addend against the section | |
1083 | symbol; the GOT16 is modified to contain the offset of an entry in | |
1084 | the global offset table, and the LO16 is modified to offset it | |
1085 | appropriately. Thus an offset larger than 16 bits requires a | |
1086 | modified value in the global offset table. | |
252b5132 | 1087 | |
c6e90b02 TS |
1088 | This implementation suffices for the assembler, but the linker does |
1089 | not yet know how to create global offset tables. */ | |
252b5132 | 1090 | |
c6e90b02 TS |
1091 | static bfd_reloc_status_type |
1092 | mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1093 | output_bfd, error_message) | |
1094 | bfd *abfd; | |
1095 | arelent *reloc_entry; | |
1096 | asymbol *symbol; | |
1097 | PTR data; | |
1098 | asection *input_section; | |
252b5132 | 1099 | bfd *output_bfd; |
c6e90b02 | 1100 | char **error_message; |
252b5132 | 1101 | { |
c6e90b02 TS |
1102 | /* If we're relocating, and this an external symbol, we don't want |
1103 | to change anything. */ | |
1104 | if (output_bfd != (bfd *) NULL | |
1105 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1106 | && reloc_entry->addend == 0) | |
1107 | { | |
1108 | reloc_entry->address += input_section->output_offset; | |
1109 | return bfd_reloc_ok; | |
1110 | } | |
252b5132 | 1111 | |
c6e90b02 TS |
1112 | /* If we're relocating, and this is a local symbol, we can handle it |
1113 | just like HI16. */ | |
1114 | if (output_bfd != (bfd *) NULL | |
1115 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
1116 | return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
1117 | input_section, output_bfd, error_message); | |
252b5132 | 1118 | |
c6e90b02 | 1119 | abort (); |
252b5132 RH |
1120 | } |
1121 | ||
c6e90b02 TS |
1122 | /* Set the GP value for OUTPUT_BFD. Returns false if this is a |
1123 | dangerous relocation. */ | |
252b5132 | 1124 | |
252b5132 | 1125 | static boolean |
c6e90b02 TS |
1126 | mips_elf_assign_gp (output_bfd, pgp) |
1127 | bfd *output_bfd; | |
1128 | bfd_vma *pgp; | |
252b5132 | 1129 | { |
c6e90b02 TS |
1130 | unsigned int count; |
1131 | asymbol **sym; | |
1132 | unsigned int i; | |
e92d460e | 1133 | |
c6e90b02 TS |
1134 | /* If we've already figured out what GP will be, just return it. */ |
1135 | *pgp = _bfd_get_gp_value (output_bfd); | |
1136 | if (*pgp) | |
1137 | return true; | |
1138 | ||
1139 | count = bfd_get_symcount (output_bfd); | |
1140 | sym = bfd_get_outsymbols (output_bfd); | |
252b5132 | 1141 | |
c6e90b02 TS |
1142 | /* The linker script will have created a symbol named `_gp' with the |
1143 | appropriate value. */ | |
1144 | if (sym == (asymbol **) NULL) | |
1145 | i = count; | |
1146 | else | |
252b5132 | 1147 | { |
c6e90b02 TS |
1148 | for (i = 0; i < count; i++, sym++) |
1149 | { | |
1150 | register const char *name; | |
1151 | ||
1152 | name = bfd_asymbol_name (*sym); | |
1153 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1154 | { | |
1155 | *pgp = bfd_asymbol_value (*sym); | |
1156 | _bfd_set_gp_value (output_bfd, *pgp); | |
1157 | break; | |
1158 | } | |
1159 | } | |
252b5132 RH |
1160 | } |
1161 | ||
c6e90b02 | 1162 | if (i >= count) |
252b5132 | 1163 | { |
c6e90b02 TS |
1164 | /* Only get the error once. */ |
1165 | *pgp = 4; | |
1166 | _bfd_set_gp_value (output_bfd, *pgp); | |
1167 | return false; | |
252b5132 RH |
1168 | } |
1169 | ||
1170 | return true; | |
1171 | } | |
1172 | ||
c6e90b02 TS |
1173 | /* We have to figure out the gp value, so that we can adjust the |
1174 | symbol value correctly. We look up the symbol _gp in the output | |
1175 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
1176 | target data. We don't need to adjust the symbol value for an | |
1177 | external symbol if we are producing relocateable output. */ | |
252b5132 | 1178 | |
c6e90b02 TS |
1179 | static bfd_reloc_status_type |
1180 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) | |
252b5132 | 1181 | bfd *output_bfd; |
c6e90b02 TS |
1182 | asymbol *symbol; |
1183 | boolean relocateable; | |
1184 | char **error_message; | |
1185 | bfd_vma *pgp; | |
252b5132 | 1186 | { |
c6e90b02 TS |
1187 | if (bfd_is_und_section (symbol->section) |
1188 | && ! relocateable) | |
252b5132 | 1189 | { |
c6e90b02 TS |
1190 | *pgp = 0; |
1191 | return bfd_reloc_undefined; | |
252b5132 RH |
1192 | } |
1193 | ||
c6e90b02 TS |
1194 | *pgp = _bfd_get_gp_value (output_bfd); |
1195 | if (*pgp == 0 | |
1196 | && (! relocateable | |
1197 | || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
252b5132 | 1198 | { |
c6e90b02 | 1199 | if (relocateable) |
252b5132 | 1200 | { |
c6e90b02 TS |
1201 | /* Make up a value. */ |
1202 | *pgp = symbol->section->output_section->vma + 0x4000; | |
1203 | _bfd_set_gp_value (output_bfd, *pgp); | |
252b5132 | 1204 | } |
c6e90b02 | 1205 | else if (!mips_elf_assign_gp (output_bfd, pgp)) |
252b5132 | 1206 | { |
c6e90b02 TS |
1207 | *error_message = |
1208 | (char *) _("GP relative relocation when _gp not defined"); | |
1209 | return bfd_reloc_dangerous; | |
252b5132 | 1210 | } |
252b5132 RH |
1211 | } |
1212 | ||
c6e90b02 TS |
1213 | return bfd_reloc_ok; |
1214 | } | |
252b5132 | 1215 | |
c6e90b02 TS |
1216 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
1217 | become the offset from the gp register. This function also handles | |
1218 | R_MIPS_LITERAL relocations, although those can be handled more | |
1219 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
1220 | merged. */ | |
252b5132 | 1221 | |
c6e90b02 TS |
1222 | bfd_reloc_status_type |
1223 | _bfd_mips_elf32_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1224 | output_bfd, error_message) | |
1225 | bfd *abfd; | |
1226 | arelent *reloc_entry; | |
1227 | asymbol *symbol; | |
1228 | PTR data; | |
1229 | asection *input_section; | |
1230 | bfd *output_bfd; | |
1231 | char **error_message; | |
1232 | { | |
1233 | boolean relocateable; | |
1234 | bfd_reloc_status_type ret; | |
1235 | bfd_vma gp; | |
252b5132 | 1236 | |
c6e90b02 TS |
1237 | /* If we're relocating, and this is an external symbol with no |
1238 | addend, we don't want to change anything. We will only have an | |
1239 | addend if this is a newly created reloc, not read from an ELF | |
1240 | file. */ | |
1241 | if (output_bfd != (bfd *) NULL | |
1242 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1243 | && reloc_entry->addend == 0) | |
1244 | { | |
1245 | reloc_entry->address += input_section->output_offset; | |
1246 | return bfd_reloc_ok; | |
1247 | } | |
252b5132 | 1248 | |
c6e90b02 TS |
1249 | if (output_bfd != (bfd *) NULL) |
1250 | relocateable = true; | |
1251 | else | |
1252 | { | |
1253 | relocateable = false; | |
1254 | output_bfd = symbol->section->output_section->owner; | |
1255 | } | |
252b5132 | 1256 | |
c6e90b02 TS |
1257 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
1258 | &gp); | |
1259 | if (ret != bfd_reloc_ok) | |
1260 | return ret; | |
252b5132 | 1261 | |
c6e90b02 TS |
1262 | return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
1263 | input_section, relocateable, | |
1264 | data, gp); | |
1265 | } | |
252b5132 | 1266 | |
c6e90b02 TS |
1267 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset |
1268 | from the gp register? XXX */ | |
252b5132 | 1269 | |
c6e90b02 TS |
1270 | static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, |
1271 | arelent *, asection *, | |
1272 | boolean, PTR, bfd_vma)); | |
252b5132 | 1273 | |
c6e90b02 TS |
1274 | static bfd_reloc_status_type |
1275 | mips_elf_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1276 | output_bfd, error_message) | |
1277 | bfd *abfd; | |
1278 | arelent *reloc_entry; | |
1279 | asymbol *symbol; | |
1280 | PTR data; | |
1281 | asection *input_section; | |
1282 | bfd *output_bfd; | |
1283 | char **error_message; | |
1284 | { | |
1285 | boolean relocateable; | |
1286 | bfd_reloc_status_type ret; | |
1287 | bfd_vma gp; | |
252b5132 | 1288 | |
c6e90b02 TS |
1289 | /* If we're relocating, and this is an external symbol with no |
1290 | addend, we don't want to change anything. We will only have an | |
1291 | addend if this is a newly created reloc, not read from an ELF | |
1292 | file. */ | |
1293 | if (output_bfd != (bfd *) NULL | |
1294 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1295 | && reloc_entry->addend == 0) | |
1296 | { | |
1297 | *error_message = (char *) | |
1298 | _("32bits gp relative relocation occurs for an external symbol"); | |
1299 | return bfd_reloc_outofrange; | |
1300 | } | |
252b5132 | 1301 | |
c6e90b02 TS |
1302 | if (output_bfd != (bfd *) NULL) |
1303 | { | |
1304 | relocateable = true; | |
1305 | gp = _bfd_get_gp_value (output_bfd); | |
1306 | } | |
1307 | else | |
1308 | { | |
1309 | relocateable = false; | |
1310 | output_bfd = symbol->section->output_section->owner; | |
252b5132 | 1311 | |
c6e90b02 TS |
1312 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
1313 | error_message, &gp); | |
1314 | if (ret != bfd_reloc_ok) | |
1315 | return ret; | |
1316 | } | |
252b5132 | 1317 | |
c6e90b02 TS |
1318 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, |
1319 | relocateable, data, gp); | |
1320 | } | |
252b5132 | 1321 | |
c6e90b02 TS |
1322 | static bfd_reloc_status_type |
1323 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1324 | gp) | |
1325 | bfd *abfd; | |
1326 | asymbol *symbol; | |
1327 | arelent *reloc_entry; | |
1328 | asection *input_section; | |
1329 | boolean relocateable; | |
1330 | PTR data; | |
1331 | bfd_vma gp; | |
1332 | { | |
1333 | bfd_vma relocation; | |
1334 | unsigned long val; | |
252b5132 | 1335 | |
c6e90b02 TS |
1336 | if (bfd_is_com_section (symbol->section)) |
1337 | relocation = 0; | |
1338 | else | |
1339 | relocation = symbol->value; | |
252b5132 | 1340 | |
c6e90b02 TS |
1341 | relocation += symbol->section->output_section->vma; |
1342 | relocation += symbol->section->output_offset; | |
252b5132 | 1343 | |
c6e90b02 TS |
1344 | if (reloc_entry->address > input_section->_cooked_size) |
1345 | return bfd_reloc_outofrange; | |
252b5132 | 1346 | |
c6e90b02 TS |
1347 | if (reloc_entry->howto->src_mask == 0) |
1348 | { | |
1349 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
1350 | val = 0; | |
1351 | } | |
1352 | else | |
1353 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 1354 | |
c6e90b02 TS |
1355 | /* Set val to the offset into the section or symbol. */ |
1356 | val += reloc_entry->addend; | |
252b5132 | 1357 | |
c6e90b02 TS |
1358 | /* Adjust val for the final section location and GP value. If we |
1359 | are producing relocateable output, we don't want to do this for | |
1360 | an external symbol. */ | |
1361 | if (! relocateable | |
1362 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1363 | val += relocation - gp; | |
252b5132 | 1364 | |
c6e90b02 | 1365 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address); |
c6142e5d | 1366 | |
c6e90b02 TS |
1367 | if (relocateable) |
1368 | reloc_entry->address += input_section->output_offset; | |
252b5132 | 1369 | |
c6e90b02 | 1370 | return bfd_reloc_ok; |
252b5132 RH |
1371 | } |
1372 | ||
c6e90b02 TS |
1373 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are |
1374 | generated when addresses are 64 bits. The upper 32 bits are a simple | |
1375 | sign extension. */ | |
7403cb63 | 1376 | |
c6e90b02 TS |
1377 | static bfd_reloc_status_type |
1378 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1379 | output_bfd, error_message) | |
1380 | bfd *abfd; | |
1381 | arelent *reloc_entry; | |
1382 | asymbol *symbol; | |
1383 | PTR data; | |
1384 | asection *input_section; | |
1385 | bfd *output_bfd; | |
1386 | char **error_message; | |
7403cb63 | 1387 | { |
c6e90b02 TS |
1388 | bfd_reloc_status_type r; |
1389 | arelent reloc32; | |
1390 | unsigned long val; | |
1391 | bfd_size_type addr; | |
7403cb63 | 1392 | |
c6e90b02 TS |
1393 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
1394 | input_section, output_bfd, error_message); | |
1395 | if (r != bfd_reloc_continue) | |
1396 | return r; | |
be3ccd9c | 1397 | |
c6e90b02 TS |
1398 | /* Do a normal 32 bit relocation on the lower 32 bits. */ |
1399 | reloc32 = *reloc_entry; | |
1400 | if (bfd_big_endian (abfd)) | |
1401 | reloc32.address += 4; | |
1402 | reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; | |
1403 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, | |
1404 | output_bfd, error_message); | |
be3ccd9c | 1405 | |
c6e90b02 TS |
1406 | /* Sign extend into the upper 32 bits. */ |
1407 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
1408 | if ((val & 0x80000000) != 0) | |
1409 | val = 0xffffffff; | |
1410 | else | |
1411 | val = 0; | |
1412 | addr = reloc_entry->address; | |
1413 | if (bfd_little_endian (abfd)) | |
1414 | addr += 4; | |
1415 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr); | |
1416 | ||
1417 | return r; | |
7403cb63 MM |
1418 | } |
1419 | ||
c6e90b02 | 1420 | /* Handle a mips16 jump. */ |
252b5132 | 1421 | |
c6e90b02 TS |
1422 | static bfd_reloc_status_type |
1423 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1424 | output_bfd, error_message) | |
1425 | bfd *abfd ATTRIBUTE_UNUSED; | |
1426 | arelent *reloc_entry; | |
1427 | asymbol *symbol; | |
1428 | PTR data ATTRIBUTE_UNUSED; | |
1429 | asection *input_section; | |
252b5132 | 1430 | bfd *output_bfd; |
c6e90b02 | 1431 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 | 1432 | { |
c6e90b02 TS |
1433 | if (output_bfd != (bfd *) NULL |
1434 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1435 | && reloc_entry->addend == 0) | |
252b5132 | 1436 | { |
c6e90b02 TS |
1437 | reloc_entry->address += input_section->output_offset; |
1438 | return bfd_reloc_ok; | |
1439 | } | |
252b5132 | 1440 | |
c6e90b02 TS |
1441 | /* FIXME. */ |
1442 | { | |
1443 | static boolean warned; | |
252b5132 | 1444 | |
c6e90b02 TS |
1445 | if (! warned) |
1446 | (*_bfd_error_handler) | |
1447 | (_("Linking mips16 objects into %s format is not supported"), | |
1448 | bfd_get_target (input_section->output_section->owner)); | |
1449 | warned = true; | |
1450 | } | |
252b5132 | 1451 | |
c6e90b02 TS |
1452 | return bfd_reloc_undefined; |
1453 | } | |
252b5132 | 1454 | |
c6e90b02 | 1455 | /* Handle a mips16 GP relative reloc. */ |
252b5132 | 1456 | |
c6e90b02 TS |
1457 | static bfd_reloc_status_type |
1458 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1459 | output_bfd, error_message) | |
1460 | bfd *abfd; | |
1461 | arelent *reloc_entry; | |
1462 | asymbol *symbol; | |
1463 | PTR data; | |
1464 | asection *input_section; | |
1465 | bfd *output_bfd; | |
1466 | char **error_message; | |
1467 | { | |
1468 | boolean relocateable; | |
1469 | bfd_reloc_status_type ret; | |
1470 | bfd_vma gp; | |
1471 | unsigned short extend, insn; | |
1472 | unsigned long final; | |
252b5132 | 1473 | |
c6e90b02 TS |
1474 | /* If we're relocating, and this is an external symbol with no |
1475 | addend, we don't want to change anything. We will only have an | |
1476 | addend if this is a newly created reloc, not read from an ELF | |
1477 | file. */ | |
1478 | if (output_bfd != NULL | |
1479 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1480 | && reloc_entry->addend == 0) | |
1481 | { | |
1482 | reloc_entry->address += input_section->output_offset; | |
1483 | return bfd_reloc_ok; | |
1484 | } | |
252b5132 | 1485 | |
c6e90b02 TS |
1486 | if (output_bfd != NULL) |
1487 | relocateable = true; | |
1488 | else | |
1489 | { | |
1490 | relocateable = false; | |
1491 | output_bfd = symbol->section->output_section->owner; | |
252b5132 RH |
1492 | } |
1493 | ||
c6e90b02 TS |
1494 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
1495 | &gp); | |
1496 | if (ret != bfd_reloc_ok) | |
1497 | return ret; | |
252b5132 | 1498 | |
c6e90b02 TS |
1499 | if (reloc_entry->address > input_section->_cooked_size) |
1500 | return bfd_reloc_outofrange; | |
252b5132 | 1501 | |
c6e90b02 TS |
1502 | /* Pick up the mips16 extend instruction and the real instruction. */ |
1503 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1504 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); | |
252b5132 | 1505 | |
c6e90b02 TS |
1506 | /* Stuff the current addend back as a 32 bit value, do the usual |
1507 | relocation, and then clean up. */ | |
1508 | bfd_put_32 (abfd, | |
1509 | (bfd_vma) (((extend & 0x1f) << 11) | |
1510 | | (extend & 0x7e0) | |
1511 | | (insn & 0x1f)), | |
1512 | (bfd_byte *) data + reloc_entry->address); | |
252b5132 | 1513 | |
c6e90b02 TS |
1514 | ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
1515 | input_section, relocateable, data, gp); | |
c6142e5d | 1516 | |
c6e90b02 TS |
1517 | final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
1518 | bfd_put_16 (abfd, | |
1519 | (bfd_vma) ((extend & 0xf800) | |
1520 | | ((final >> 11) & 0x1f) | |
1521 | | (final & 0x7e0)), | |
1522 | (bfd_byte *) data + reloc_entry->address); | |
1523 | bfd_put_16 (abfd, | |
1524 | (bfd_vma) ((insn & 0xffe0) | |
1525 | | (final & 0x1f)), | |
1526 | (bfd_byte *) data + reloc_entry->address + 2); | |
252b5132 | 1527 | |
c6e90b02 TS |
1528 | return ret; |
1529 | } | |
7403cb63 | 1530 | |
c6e90b02 | 1531 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
252b5132 | 1532 | |
c6e90b02 TS |
1533 | struct elf_reloc_map { |
1534 | bfd_reloc_code_real_type bfd_reloc_val; | |
1535 | enum elf_mips_reloc_type elf_reloc_val; | |
1536 | }; | |
252b5132 | 1537 | |
c6e90b02 TS |
1538 | static const struct elf_reloc_map mips_reloc_map[] = |
1539 | { | |
1540 | { BFD_RELOC_NONE, R_MIPS_NONE, }, | |
1541 | { BFD_RELOC_16, R_MIPS_16 }, | |
1542 | { BFD_RELOC_32, R_MIPS_32 }, | |
1543 | { BFD_RELOC_64, R_MIPS_64 }, | |
1544 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, | |
1545 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1546 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1547 | { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, | |
1548 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1549 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
1550 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, | |
1551 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, | |
1552 | { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, | |
1553 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
1554 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, | |
1555 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
1556 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, | |
1557 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, | |
1558 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, | |
1559 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, | |
1560 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } | |
1561 | }; | |
252b5132 | 1562 | |
c6e90b02 | 1563 | /* Given a BFD reloc type, return a howto structure. */ |
252b5132 | 1564 | |
c6e90b02 TS |
1565 | static reloc_howto_type * |
1566 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
1567 | bfd *abfd; | |
1568 | bfd_reloc_code_real_type code; | |
252b5132 | 1569 | { |
c6e90b02 | 1570 | unsigned int i; |
252b5132 | 1571 | |
c6e90b02 | 1572 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) |
252b5132 | 1573 | { |
c6e90b02 TS |
1574 | if (mips_reloc_map[i].bfd_reloc_val == code) |
1575 | return &elf_mips_howto_table_rel[(int) mips_reloc_map[i].elf_reloc_val]; | |
252b5132 RH |
1576 | } |
1577 | ||
c6e90b02 | 1578 | switch (code) |
252b5132 | 1579 | { |
c6e90b02 TS |
1580 | default: |
1581 | bfd_set_error (bfd_error_bad_value); | |
1582 | return NULL; | |
252b5132 | 1583 | |
c6e90b02 TS |
1584 | case BFD_RELOC_CTOR: |
1585 | /* We need to handle BFD_RELOC_CTOR specially. | |
1586 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the | |
1587 | size of addresses on this architecture. */ | |
1588 | if (bfd_arch_bits_per_address (abfd) == 32) | |
1589 | return &elf_mips_howto_table_rel[(int) R_MIPS_32]; | |
1590 | else | |
1591 | return &elf_mips_ctor64_howto; | |
252b5132 | 1592 | |
c6e90b02 TS |
1593 | case BFD_RELOC_MIPS16_JMP: |
1594 | return &elf_mips16_jump_howto; | |
1595 | case BFD_RELOC_MIPS16_GPREL: | |
1596 | return &elf_mips16_gprel_howto; | |
1597 | case BFD_RELOC_VTABLE_INHERIT: | |
1598 | return &elf_mips_gnu_vtinherit_howto; | |
1599 | case BFD_RELOC_VTABLE_ENTRY: | |
1600 | return &elf_mips_gnu_vtentry_howto; | |
1601 | case BFD_RELOC_PCREL_HI16_S: | |
1602 | return &elf_mips_gnu_rel_hi16; | |
1603 | case BFD_RELOC_PCREL_LO16: | |
1604 | return &elf_mips_gnu_rel_lo16; | |
1605 | case BFD_RELOC_16_PCREL_S2: | |
1606 | return &elf_mips_gnu_rel16_s2; | |
1607 | case BFD_RELOC_64_PCREL: | |
1608 | return &elf_mips_gnu_pcrel64; | |
1609 | case BFD_RELOC_32_PCREL: | |
1610 | return &elf_mips_gnu_pcrel32; | |
1611 | } | |
1612 | } | |
252b5132 | 1613 | |
c6e90b02 | 1614 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 1615 | |
c6e90b02 TS |
1616 | static reloc_howto_type * |
1617 | mips_elf32_rtype_to_howto (r_type, rela_p) | |
1618 | unsigned int r_type; | |
1619 | boolean rela_p ATTRIBUTE_UNUSED; | |
1620 | { | |
1621 | switch (r_type) | |
1622 | { | |
1623 | case R_MIPS16_26: | |
1624 | return &elf_mips16_jump_howto; | |
1625 | break; | |
1626 | case R_MIPS16_GPREL: | |
1627 | return &elf_mips16_gprel_howto; | |
1628 | break; | |
1629 | case R_MIPS_GNU_VTINHERIT: | |
1630 | return &elf_mips_gnu_vtinherit_howto; | |
1631 | break; | |
1632 | case R_MIPS_GNU_VTENTRY: | |
1633 | return &elf_mips_gnu_vtentry_howto; | |
1634 | break; | |
1635 | case R_MIPS_GNU_REL_HI16: | |
1636 | return &elf_mips_gnu_rel_hi16; | |
1637 | break; | |
1638 | case R_MIPS_GNU_REL_LO16: | |
1639 | return &elf_mips_gnu_rel_lo16; | |
1640 | break; | |
1641 | case R_MIPS_GNU_REL16_S2: | |
1642 | return &elf_mips_gnu_rel16_s2; | |
1643 | break; | |
1644 | case R_MIPS_PC64: | |
1645 | return &elf_mips_gnu_pcrel64; | |
1646 | break; | |
1647 | case R_MIPS_PC32: | |
1648 | return &elf_mips_gnu_pcrel32; | |
1649 | break; | |
252b5132 | 1650 | |
c6e90b02 TS |
1651 | default: |
1652 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
1653 | return &elf_mips_howto_table_rel[r_type]; | |
1654 | } | |
1655 | } | |
252b5132 | 1656 | |
c6e90b02 | 1657 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
252b5132 | 1658 | |
c6e90b02 TS |
1659 | static void |
1660 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
1661 | bfd *abfd; | |
1662 | arelent *cache_ptr; | |
1663 | Elf32_Internal_Rel *dst; | |
1664 | { | |
1665 | unsigned int r_type; | |
252b5132 | 1666 | |
c6e90b02 TS |
1667 | r_type = ELF32_R_TYPE (dst->r_info); |
1668 | cache_ptr->howto = mips_elf32_rtype_to_howto (r_type, false); | |
252b5132 | 1669 | |
c6e90b02 TS |
1670 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP |
1671 | value for the object file. We get the addend now, rather than | |
1672 | when we do the relocation, because the symbol manipulations done | |
1673 | by the linker may cause us to lose track of the input BFD. */ | |
1674 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
1675 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
1676 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
1677 | cache_ptr->addend = elf_gp (abfd); | |
1678 | } | |
5499724a | 1679 | |
c6e90b02 | 1680 | /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */ |
252b5132 | 1681 | |
c6e90b02 TS |
1682 | static void |
1683 | mips_info_to_howto_rela (abfd, cache_ptr, dst) | |
1684 | bfd *abfd; | |
1685 | arelent *cache_ptr; | |
1686 | Elf32_Internal_Rela *dst; | |
1687 | { | |
1688 | /* Since an Elf32_Internal_Rel is an initial prefix of an | |
1689 | Elf32_Internal_Rela, we can just use mips_info_to_howto_rel | |
1690 | above. */ | |
1691 | mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst); | |
252b5132 | 1692 | |
c6e90b02 TS |
1693 | /* If we ever need to do any extra processing with dst->r_addend |
1694 | (the field omitted in an Elf32_Internal_Rel) we can do it here. */ | |
1695 | } | |
1696 | \f | |
1697 | /* Determine whether a symbol is global for the purposes of splitting | |
1698 | the symbol table into global symbols and local symbols. At least | |
1699 | on Irix 5, this split must be between section symbols and all other | |
1700 | symbols. On most ELF targets the split is between static symbols | |
1701 | and externally visible symbols. */ | |
252b5132 | 1702 | |
c6e90b02 TS |
1703 | static boolean |
1704 | mips_elf_sym_is_global (abfd, sym) | |
1705 | bfd *abfd ATTRIBUTE_UNUSED; | |
1706 | asymbol *sym; | |
1707 | { | |
1708 | if (SGI_COMPAT (abfd)) | |
1709 | return (sym->flags & BSF_SECTION_SYM) == 0; | |
1710 | else | |
1711 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
1712 | || bfd_is_und_section (bfd_get_section (sym)) | |
1713 | || bfd_is_com_section (bfd_get_section (sym))); | |
1714 | } | |
1715 | \f | |
1716 | /* Set the right machine number for a MIPS ELF file. */ | |
7403cb63 | 1717 | |
c6e90b02 TS |
1718 | static boolean |
1719 | mips_elf32_object_p (abfd) | |
1720 | bfd *abfd; | |
1721 | { | |
1722 | unsigned long mach; | |
103186c6 | 1723 | |
c6e90b02 TS |
1724 | /* Irix 5 and 6 are broken. Object file symbol tables are not always |
1725 | sorted correctly such that local symbols precede global symbols, | |
1726 | and the sh_info field in the symbol table is not always right. */ | |
1727 | if (SGI_COMPAT (abfd)) | |
1728 | elf_bad_symtab (abfd) = true; | |
103186c6 | 1729 | |
c6e90b02 TS |
1730 | mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); |
1731 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); | |
252b5132 | 1732 | |
c6e90b02 TS |
1733 | if (ABI_N32_P (abfd)) |
1734 | return false; | |
252b5132 | 1735 | |
c6e90b02 TS |
1736 | return true; |
1737 | } | |
1738 | \f | |
1739 | /* MIPS ELF local labels start with '$', not 'L'. */ | |
252b5132 | 1740 | |
c6e90b02 TS |
1741 | static boolean |
1742 | mips_elf_is_local_label_name (abfd, name) | |
1743 | bfd *abfd; | |
1744 | const char *name; | |
1745 | { | |
1746 | if (name[0] == '$') | |
1747 | return true; | |
252b5132 | 1748 | |
c6e90b02 TS |
1749 | /* On Irix 6, the labels go back to starting with '.', so we accept |
1750 | the generic ELF local label syntax as well. */ | |
1751 | return _bfd_elf_is_local_label_name (abfd, name); | |
252b5132 RH |
1752 | } |
1753 | \f | |
c6e90b02 | 1754 | /* Support for core dump NOTE sections. */ |
bb0082d6 | 1755 | static boolean |
c6e90b02 | 1756 | elf32_mips_grok_prstatus (abfd, note) |
bb0082d6 AM |
1757 | bfd *abfd; |
1758 | Elf_Internal_Note *note; | |
1759 | { | |
1760 | int offset; | |
dc810e39 | 1761 | unsigned int raw_size; |
bb0082d6 AM |
1762 | |
1763 | switch (note->descsz) | |
1764 | { | |
1765 | default: | |
1766 | return false; | |
1767 | ||
1768 | case 256: /* Linux/MIPS */ | |
1769 | /* pr_cursig */ | |
1770 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1771 | ||
1772 | /* pr_pid */ | |
1773 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1774 | ||
1775 | /* pr_reg */ | |
1776 | offset = 72; | |
1777 | raw_size = 180; | |
1778 | ||
1779 | break; | |
1780 | } | |
1781 | ||
1782 | /* Make a ".reg/999" section. */ | |
936e320b AM |
1783 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
1784 | raw_size, note->descpos + offset); | |
bb0082d6 AM |
1785 | } |
1786 | ||
9e80ff3a | 1787 | static boolean |
c6e90b02 | 1788 | elf32_mips_grok_psinfo (abfd, note) |
bb0082d6 AM |
1789 | bfd *abfd; |
1790 | Elf_Internal_Note *note; | |
1791 | { | |
1792 | switch (note->descsz) | |
1793 | { | |
1794 | default: | |
1795 | return false; | |
1796 | ||
1797 | case 128: /* Linux/MIPS elf_prpsinfo */ | |
1798 | elf_tdata (abfd)->core_program | |
1799 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
1800 | elf_tdata (abfd)->core_command | |
1801 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
1802 | } | |
1803 | ||
1804 | /* Note that for some reason, a spurious space is tacked | |
1805 | onto the end of the args in some (at least one anyway) | |
1806 | implementations, so strip it off if it exists. */ | |
1807 | ||
1808 | { | |
1809 | char *command = elf_tdata (abfd)->core_command; | |
1810 | int n = strlen (command); | |
1811 | ||
1812 | if (0 < n && command[n - 1] == ' ') | |
1813 | command[n - 1] = '\0'; | |
1814 | } | |
1815 | ||
1816 | return true; | |
1817 | } | |
1818 | \f | |
73d074b4 DJ |
1819 | #define PDR_SIZE 32 |
1820 | ||
1821 | static boolean | |
c6e90b02 | 1822 | elf32_mips_discard_info (abfd, cookie, info) |
73d074b4 DJ |
1823 | bfd *abfd; |
1824 | struct elf_reloc_cookie *cookie; | |
1825 | struct bfd_link_info *info; | |
1826 | { | |
1827 | asection *o; | |
1828 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1829 | boolean ret = false; | |
1830 | unsigned char *tdata; | |
1831 | size_t i, skip; | |
1832 | ||
1833 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
1834 | if (! o) | |
1835 | return false; | |
1836 | if (o->_raw_size == 0) | |
1837 | return false; | |
1838 | if (o->_raw_size % PDR_SIZE != 0) | |
1839 | return false; | |
1840 | if (o->output_section != NULL | |
1841 | && bfd_is_abs_section (o->output_section)) | |
1842 | return false; | |
1843 | ||
1844 | tdata = bfd_zmalloc (o->_raw_size / PDR_SIZE); | |
1845 | if (! tdata) | |
1846 | return false; | |
1847 | ||
1848 | cookie->rels = _bfd_elf32_link_read_relocs (abfd, o, (PTR) NULL, | |
1849 | (Elf_Internal_Rela *) NULL, | |
1850 | info->keep_memory); | |
1851 | if (!cookie->rels) | |
1852 | { | |
1853 | free (tdata); | |
1854 | return false; | |
1855 | } | |
1856 | ||
1857 | cookie->rel = cookie->rels; | |
1858 | cookie->relend = | |
1859 | cookie->rels + o->reloc_count * bed->s->int_rels_per_ext_rel; | |
175e9962 | 1860 | |
73d074b4 DJ |
1861 | for (i = 0, skip = 0; i < o->_raw_size; i ++) |
1862 | { | |
1863 | if (_bfd_elf32_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) | |
1864 | { | |
1865 | tdata[i] = 1; | |
1866 | skip ++; | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | if (skip != 0) | |
1871 | { | |
1872 | elf_section_data (o)->tdata = tdata; | |
1873 | o->_cooked_size = o->_raw_size - skip * PDR_SIZE; | |
1874 | ret = true; | |
1875 | } | |
1876 | else | |
1877 | free (tdata); | |
1878 | ||
1879 | if (! info->keep_memory) | |
1880 | free (cookie->rels); | |
1881 | ||
1882 | return ret; | |
1883 | } | |
1884 | ||
1885 | static boolean | |
c6e90b02 | 1886 | elf32_mips_ignore_discarded_relocs (sec) |
73d074b4 DJ |
1887 | asection *sec; |
1888 | { | |
1889 | if (strcmp (sec->name, ".pdr") == 0) | |
1890 | return true; | |
1891 | return false; | |
1892 | } | |
1893 | ||
1894 | static boolean | |
c6e90b02 | 1895 | elf32_mips_write_section (output_bfd, sec, contents) |
73d074b4 DJ |
1896 | bfd *output_bfd; |
1897 | asection *sec; | |
1898 | bfd_byte *contents; | |
1899 | { | |
1900 | bfd_byte *to, *from, *end; | |
1901 | int i; | |
1902 | ||
1903 | if (strcmp (sec->name, ".pdr") != 0) | |
1904 | return false; | |
1905 | ||
1906 | if (elf_section_data (sec)->tdata == NULL) | |
1907 | return false; | |
1908 | ||
1909 | to = contents; | |
1910 | end = contents + sec->_raw_size; | |
1911 | for (from = contents, i = 0; | |
1912 | from < end; | |
1913 | from += PDR_SIZE, i++) | |
1914 | { | |
1915 | if (((unsigned char *)elf_section_data (sec)->tdata)[i] == 1) | |
1916 | continue; | |
1917 | if (to != from) | |
1918 | memcpy (to, from, PDR_SIZE); | |
1919 | to += PDR_SIZE; | |
1920 | } | |
1921 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
1922 | (file_ptr) sec->output_offset, | |
1923 | sec->_cooked_size); | |
1924 | return true; | |
1925 | } | |
c6e90b02 TS |
1926 | |
1927 | /* Depending on the target vector we generate some version of Irix | |
1928 | executables or "normal" MIPS ELF ABI executables. */ | |
1929 | static irix_compat_t | |
1930 | elf32_mips_irix_compat (abfd) | |
1931 | bfd *abfd; | |
1932 | { | |
1933 | if ((abfd->xvec == &bfd_elf32_tradbigmips_vec) | |
1934 | || (abfd->xvec == &bfd_elf32_tradlittlemips_vec)) | |
1935 | return ict_none; | |
1936 | else | |
1937 | return ict_irix5; | |
1938 | } | |
73d074b4 | 1939 | \f |
030d18fb CD |
1940 | /* Given a data section and an in-memory embedded reloc section, store |
1941 | relocation information into the embedded reloc section which can be | |
1942 | used at runtime to relocate the data section. This is called by the | |
1943 | linker when the --embedded-relocs switch is used. This is called | |
1944 | after the add_symbols entry point has been called for all the | |
1945 | objects, and before the final_link entry point is called. */ | |
1946 | ||
1947 | boolean | |
1948 | bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) | |
1949 | bfd *abfd; | |
1950 | struct bfd_link_info *info; | |
1951 | asection *datasec; | |
1952 | asection *relsec; | |
1953 | char **errmsg; | |
1954 | { | |
1955 | Elf_Internal_Shdr *symtab_hdr; | |
1956 | Elf_Internal_Shdr *shndx_hdr; | |
1957 | Elf32_External_Sym *extsyms; | |
1958 | Elf32_External_Sym *free_extsyms = NULL; | |
1959 | Elf_External_Sym_Shndx *shndx_buf = NULL; | |
1960 | Elf_Internal_Rela *internal_relocs; | |
1961 | Elf_Internal_Rela *free_relocs = NULL; | |
1962 | Elf_Internal_Rela *irel, *irelend; | |
1963 | bfd_byte *p; | |
1964 | bfd_size_type amt; | |
1965 | ||
1966 | BFD_ASSERT (! info->relocateable); | |
1967 | ||
1968 | *errmsg = NULL; | |
1969 | ||
1970 | if (datasec->reloc_count == 0) | |
1971 | return true; | |
1972 | ||
1973 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1974 | /* Read this BFD's symbols if we haven't done so already, or get the cached | |
1975 | copy if it exists. */ | |
1976 | if (symtab_hdr->contents != NULL) | |
1977 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; | |
1978 | else | |
1979 | { | |
1980 | /* Go get them off disk. */ | |
1981 | if (info->keep_memory) | |
1982 | extsyms = ((Elf32_External_Sym *) | |
1983 | bfd_alloc (abfd, symtab_hdr->sh_size)); | |
1984 | else | |
1985 | extsyms = ((Elf32_External_Sym *) | |
1986 | bfd_malloc (symtab_hdr->sh_size)); | |
1987 | if (extsyms == NULL) | |
1988 | goto error_return; | |
1989 | if (! info->keep_memory) | |
1990 | free_extsyms = extsyms; | |
1991 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1992 | || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd) | |
1993 | != symtab_hdr->sh_size)) | |
1994 | goto error_return; | |
1995 | if (info->keep_memory) | |
1996 | symtab_hdr->contents = (unsigned char *) extsyms; | |
1997 | } | |
1998 | ||
1999 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
2000 | if (shndx_hdr->sh_size != 0) | |
2001 | { | |
2002 | amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx); | |
2003 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); | |
2004 | if (shndx_buf == NULL) | |
2005 | goto error_return; | |
2006 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
2007 | || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) | |
2008 | goto error_return; | |
2009 | } | |
2010 | ||
2011 | /* Get a copy of the native relocations. */ | |
2012 | internal_relocs = (_bfd_elf32_link_read_relocs | |
2013 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
2014 | info->keep_memory)); | |
2015 | if (internal_relocs == NULL) | |
2016 | goto error_return; | |
2017 | if (! info->keep_memory) | |
2018 | free_relocs = internal_relocs; | |
2019 | ||
2020 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12); | |
2021 | if (relsec->contents == NULL) | |
2022 | goto error_return; | |
2023 | ||
2024 | p = relsec->contents; | |
2025 | ||
2026 | irelend = internal_relocs + datasec->reloc_count; | |
2027 | ||
2028 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2029 | { | |
2030 | asection *targetsec; | |
2031 | ||
2032 | /* We are going to write a four byte longword into the runtime | |
c6e90b02 TS |
2033 | reloc section. The longword will be the address in the data |
2034 | section which must be relocated. It is followed by the name | |
2035 | of the target section NUL-padded or truncated to 8 | |
2036 | characters. */ | |
030d18fb CD |
2037 | |
2038 | /* We can only relocate absolute longword relocs at run time. */ | |
2039 | if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) && | |
2040 | (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64)) | |
2041 | { | |
2042 | *errmsg = _("unsupported reloc type"); | |
2043 | bfd_set_error (bfd_error_bad_value); | |
2044 | goto error_return; | |
2045 | } | |
2046 | /* Get the target section referred to by the reloc. */ | |
2047 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2048 | { | |
2049 | Elf32_External_Sym *esym; | |
2050 | Elf_External_Sym_Shndx *shndx; | |
2051 | Elf_Internal_Sym isym; | |
2052 | ||
2053 | /* A local symbol. */ | |
2054 | esym = extsyms + ELF32_R_SYM (irel->r_info); | |
2055 | shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0); | |
2056 | bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym); | |
2057 | ||
2058 | targetsec = bfd_section_from_elf_index (abfd, isym.st_shndx); | |
2059 | } | |
2060 | else | |
2061 | { | |
2062 | unsigned long indx; | |
2063 | struct elf_link_hash_entry *h; | |
2064 | ||
2065 | /* An external symbol. */ | |
2066 | indx = ELF32_R_SYM (irel->r_info); | |
2067 | h = elf_sym_hashes (abfd)[indx]; | |
2068 | targetsec = NULL; | |
2069 | /* | |
c6e90b02 TS |
2070 | For some reason, in certain programs, the symbol will |
2071 | not be in the hash table. It seems to happen when you | |
2072 | declare a static table of pointers to const external structures. | |
2073 | In this case, the relocs are relative to data, not | |
2074 | text, so just treating it like an undefined link | |
2075 | should be sufficient. */ | |
030d18fb CD |
2076 | BFD_ASSERT(h != NULL); |
2077 | if (h->root.type == bfd_link_hash_defined | |
2078 | || h->root.type == bfd_link_hash_defweak) | |
2079 | targetsec = h->root.u.def.section; | |
2080 | } | |
2081 | ||
2082 | ||
2083 | /* | |
c6e90b02 TS |
2084 | Set the low bit of the relocation offset if it's a MIPS64 reloc. |
2085 | Relocations will always be on (at least) 32-bit boundaries. */ | |
030d18fb CD |
2086 | |
2087 | bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) + | |
2088 | ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)), | |
2089 | p); | |
2090 | memset (p + 4, 0, 8); | |
2091 | if (targetsec != NULL) | |
2092 | strncpy (p + 4, targetsec->output_section->name, 8); | |
2093 | } | |
2094 | ||
2095 | if (shndx_buf != NULL) | |
2096 | free (shndx_buf); | |
2097 | if (free_extsyms != NULL) | |
2098 | free (free_extsyms); | |
2099 | if (free_relocs != NULL) | |
2100 | free (free_relocs); | |
2101 | return true; | |
2102 | ||
2103 | error_return: | |
2104 | if (shndx_buf != NULL) | |
2105 | free (shndx_buf); | |
2106 | if (free_extsyms != NULL) | |
2107 | free (free_extsyms); | |
2108 | if (free_relocs != NULL) | |
2109 | free (free_relocs); | |
2110 | return false; | |
2111 | } | |
2112 | \f | |
252b5132 RH |
2113 | /* ECOFF swapping routines. These are used when dealing with the |
2114 | .mdebug section, which is in the ECOFF debugging format. */ | |
be3ccd9c | 2115 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { |
252b5132 RH |
2116 | /* Symbol table magic number. */ |
2117 | magicSym, | |
2118 | /* Alignment of debugging information. E.g., 4. */ | |
2119 | 4, | |
2120 | /* Sizes of external symbolic information. */ | |
2121 | sizeof (struct hdr_ext), | |
2122 | sizeof (struct dnr_ext), | |
2123 | sizeof (struct pdr_ext), | |
2124 | sizeof (struct sym_ext), | |
2125 | sizeof (struct opt_ext), | |
2126 | sizeof (struct fdr_ext), | |
2127 | sizeof (struct rfd_ext), | |
2128 | sizeof (struct ext_ext), | |
2129 | /* Functions to swap in external symbolic data. */ | |
2130 | ecoff_swap_hdr_in, | |
2131 | ecoff_swap_dnr_in, | |
2132 | ecoff_swap_pdr_in, | |
2133 | ecoff_swap_sym_in, | |
2134 | ecoff_swap_opt_in, | |
2135 | ecoff_swap_fdr_in, | |
2136 | ecoff_swap_rfd_in, | |
2137 | ecoff_swap_ext_in, | |
2138 | _bfd_ecoff_swap_tir_in, | |
2139 | _bfd_ecoff_swap_rndx_in, | |
2140 | /* Functions to swap out external symbolic data. */ | |
2141 | ecoff_swap_hdr_out, | |
2142 | ecoff_swap_dnr_out, | |
2143 | ecoff_swap_pdr_out, | |
2144 | ecoff_swap_sym_out, | |
2145 | ecoff_swap_opt_out, | |
2146 | ecoff_swap_fdr_out, | |
2147 | ecoff_swap_rfd_out, | |
2148 | ecoff_swap_ext_out, | |
2149 | _bfd_ecoff_swap_tir_out, | |
2150 | _bfd_ecoff_swap_rndx_out, | |
2151 | /* Function to read in symbolic data. */ | |
2152 | _bfd_mips_elf_read_ecoff_info | |
2153 | }; | |
2154 | \f | |
252b5132 RH |
2155 | #define ELF_ARCH bfd_arch_mips |
2156 | #define ELF_MACHINE_CODE EM_MIPS | |
2157 | ||
2158 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
2159 | a value of 0x1000, and we are compatible. */ | |
2160 | #define ELF_MAXPAGESIZE 0x1000 | |
2161 | ||
2162 | #define elf_backend_collect true | |
2163 | #define elf_backend_type_change_ok true | |
2164 | #define elf_backend_can_gc_sections true | |
3f830999 | 2165 | #define elf_info_to_howto mips_info_to_howto_rela |
252b5132 RH |
2166 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
2167 | #define elf_backend_sym_is_global mips_elf_sym_is_global | |
c6e90b02 | 2168 | #define elf_backend_object_p mips_elf32_object_p |
d75bc93d TS |
2169 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
2170 | #define elf_backend_section_processing _bfd_mips_elf_section_processing | |
103186c6 | 2171 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
252b5132 RH |
2172 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
2173 | #define elf_backend_section_from_bfd_section \ | |
2174 | _bfd_mips_elf_section_from_bfd_section | |
103186c6 | 2175 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
d75bc93d TS |
2176 | #define elf_backend_link_output_symbol_hook \ |
2177 | _bfd_mips_elf_link_output_symbol_hook | |
103186c6 MM |
2178 | #define elf_backend_create_dynamic_sections \ |
2179 | _bfd_mips_elf_create_dynamic_sections | |
2180 | #define elf_backend_check_relocs _bfd_mips_elf_check_relocs | |
2181 | #define elf_backend_adjust_dynamic_symbol \ | |
2182 | _bfd_mips_elf_adjust_dynamic_symbol | |
2183 | #define elf_backend_always_size_sections \ | |
2184 | _bfd_mips_elf_always_size_sections | |
2185 | #define elf_backend_size_dynamic_sections \ | |
2186 | _bfd_mips_elf_size_dynamic_sections | |
2187 | #define elf_backend_relocate_section _bfd_mips_elf_relocate_section | |
103186c6 MM |
2188 | #define elf_backend_finish_dynamic_symbol \ |
2189 | _bfd_mips_elf_finish_dynamic_symbol | |
2190 | #define elf_backend_finish_dynamic_sections \ | |
2191 | _bfd_mips_elf_finish_dynamic_sections | |
d75bc93d TS |
2192 | #define elf_backend_final_write_processing \ |
2193 | _bfd_mips_elf_final_write_processing | |
2194 | #define elf_backend_additional_program_headers \ | |
2195 | _bfd_mips_elf_additional_program_headers | |
2196 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map | |
103186c6 MM |
2197 | #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook |
2198 | #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook | |
8a20f077 UC |
2199 | #define elf_backend_copy_indirect_symbol \ |
2200 | _bfd_mips_elf_copy_indirect_symbol | |
b305ef96 | 2201 | #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol |
c6e90b02 TS |
2202 | #define elf_backend_grok_prstatus elf32_mips_grok_prstatus |
2203 | #define elf_backend_grok_psinfo elf32_mips_grok_psinfo | |
d75bc93d TS |
2204 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap |
2205 | ||
2206 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) | |
2207 | #define elf_backend_plt_header_size 0 | |
2208 | #define elf_backend_may_use_rel_p 1 | |
2209 | #define elf_backend_may_use_rela_p 0 | |
2210 | #define elf_backend_default_use_rela_p 0 | |
2211 | #define elf_backend_sign_extend_vma true | |
b305ef96 | 2212 | |
c6e90b02 | 2213 | #define elf_backend_discard_info elf32_mips_discard_info |
73d074b4 | 2214 | #define elf_backend_ignore_discarded_relocs \ |
c6e90b02 TS |
2215 | elf32_mips_ignore_discarded_relocs |
2216 | #define elf_backend_write_section elf32_mips_write_section | |
2217 | #define elf_backend_mips_irix_compat elf32_mips_irix_compat | |
2218 | #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto | |
252b5132 RH |
2219 | #define bfd_elf32_bfd_is_local_label_name \ |
2220 | mips_elf_is_local_label_name | |
2221 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line | |
2222 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents | |
c6e90b02 TS |
2223 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
2224 | _bfd_elf_mips_get_relocated_section_contents | |
252b5132 | 2225 | #define bfd_elf32_bfd_link_hash_table_create \ |
103186c6 MM |
2226 | _bfd_mips_elf_link_hash_table_create |
2227 | #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link | |
252b5132 RH |
2228 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2229 | _bfd_mips_elf_merge_private_bfd_data | |
2230 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
2231 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2232 | _bfd_mips_elf_print_private_bfd_data | |
e364195d | 2233 | |
d75bc93d TS |
2234 | /* Support for SGI-ish mips targets. */ |
2235 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec | |
2236 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
2237 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
2238 | #define TARGET_BIG_NAME "elf32-bigmips" | |
2239 | ||
2240 | #include "elf32-target.h" | |
e364195d | 2241 | |
d75bc93d TS |
2242 | /* Support for traditional mips targets. */ |
2243 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ | |
e364195d UC |
2244 | |
2245 | #undef TARGET_LITTLE_SYM | |
2246 | #undef TARGET_LITTLE_NAME | |
2247 | #undef TARGET_BIG_SYM | |
2248 | #undef TARGET_BIG_NAME | |
2249 | ||
2250 | #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec | |
2251 | #define TARGET_LITTLE_NAME "elf32-tradlittlemips" | |
2252 | #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec | |
2253 | #define TARGET_BIG_NAME "elf32-tradbigmips" | |
2254 | ||
c6e90b02 | 2255 | /* Include the target file again for this target. */ |
e364195d | 2256 | #include "elf32-target.h" |