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[/] [or1k/] [tags/] [VER_5_3/] [gdb-5.3/] [bfd/] [elf32-mips.c] - Blame information for rev 1778

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1 1181 sfurman 
/* MIPS-specific support for 32-bit ELF
2 
   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 
   Free Software Foundation, Inc.
4 
 
5 
   Most of the information added by Ian Lance Taylor, Cygnus Support,
6 
   <ian@cygnus.com>.
7 
   N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
8 
   <mark@codesourcery.com>
9 
   Traditional MIPS targets support added by Koundinya.K, Dansk Data
10 
   Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
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"
38 
#include "elfxx-mips.h"
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"
47 
#define ECOFF_SIGNED_32
48 
#include "ecoffswap.h"
49 
 
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 **));
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));
62 
static reloc_howto_type *mips_elf32_rtype_to_howto
63 
  PARAMS ((unsigned int, boolean));
64 
static void mips_info_to_howto_rel
65 
  PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
66 
static void mips_info_to_howto_rela
67 
  PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
68 
static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
69 
static boolean mips_elf32_object_p PARAMS ((bfd *));
70 
static boolean mips_elf_is_local_label_name
71 
  PARAMS ((bfd *, const char *));
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 **));
76 
static bfd_reloc_status_type mips_elf_final_gp
77 
  PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
78 
static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
79 
static boolean elf32_mips_grok_prstatus
80 
  PARAMS ((bfd *, Elf_Internal_Note *));
81 
static boolean elf32_mips_grok_psinfo
82 
  PARAMS ((bfd *, Elf_Internal_Note *));
83 
static irix_compat_t elf32_mips_irix_compat
84 
  PARAMS ((bfd *));
85 
 
86 
extern const bfd_target bfd_elf32_bigmips_vec;
87 
extern const bfd_target bfd_elf32_littlemips_vec;
88 
 
89 
/* Nonzero if ABFD is using the N32 ABI.  */
90 
#define ABI_N32_P(abfd) \
91 
  ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
92 
 
93 
/* Whether we are trying to be compatible with IRIX at all.  */
94 
#define SGI_COMPAT(abfd) \
95 
  (elf32_mips_irix_compat (abfd) != ict_none)
96 
 
97 
/* The number of local .got entries we reserve.  */
98 
#define MIPS_RESERVED_GOTNO (2)
99 
 
100 
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
101 
   from smaller values.  Start with zero, widen, *then* decrement.  */
102 
#define MINUS_ONE       (((bfd_vma)0) - 1)
103 
 
104 
/* The relocation table used for SHT_REL sections.  */
105 
 
106 
static reloc_howto_type elf_mips_howto_table_rel[] =
107 
{
108 
  /* No relocation.  */
109 
  HOWTO (R_MIPS_NONE,           /* type */
110 
         0,                      /* rightshift */
111 
         0,                      /* size (0 = byte, 1 = short, 2 = long) */
112 
         0,                      /* bitsize */
113 
         false,                 /* pc_relative */
114 
         0,                      /* bitpos */
115 
         complain_overflow_dont, /* complain_on_overflow */
116 
         bfd_elf_generic_reloc, /* special_function */
117 
         "R_MIPS_NONE",         /* name */
118 
         false,                 /* partial_inplace */
119 
         0,                      /* src_mask */
120 
         0,                      /* dst_mask */
121 
         false),                /* pcrel_offset */
122 
 
123 
  /* 16 bit relocation.  */
124 
  HOWTO (R_MIPS_16,             /* type */
125 
         0,                      /* rightshift */
126 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
127 
         16,                    /* bitsize */
128 
         false,                 /* pc_relative */
129 
         0,                      /* bitpos */
130 
         complain_overflow_signed, /* complain_on_overflow */
131 
         bfd_elf_generic_reloc, /* special_function */
132 
         "R_MIPS_16",           /* name */
133 
         true,                  /* partial_inplace */
134 
         0x0000ffff,            /* src_mask */
135 
         0x0000ffff,            /* dst_mask */
136 
         false),                /* pcrel_offset */
137 
 
138 
  /* 32 bit relocation.  */
139 
  HOWTO (R_MIPS_32,             /* type */
140 
         0,                      /* rightshift */
141 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
142 
         32,                    /* bitsize */
143 
         false,                 /* pc_relative */
144 
         0,                      /* bitpos */
145 
         complain_overflow_dont, /* complain_on_overflow */
146 
         bfd_elf_generic_reloc, /* special_function */
147 
         "R_MIPS_32",           /* name */
148 
         true,                  /* partial_inplace */
149 
         0xffffffff,            /* src_mask */
150 
         0xffffffff,            /* dst_mask */
151 
         false),                /* pcrel_offset */
152 
 
153 
  /* 32 bit symbol relative relocation.  */
154 
  HOWTO (R_MIPS_REL32,          /* type */
155 
         0,                      /* rightshift */
156 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
157 
         32,                    /* bitsize */
158 
         false,                 /* pc_relative */
159 
         0,                      /* bitpos */
160 
         complain_overflow_dont, /* complain_on_overflow */
161 
         bfd_elf_generic_reloc, /* special_function */
162 
         "R_MIPS_REL32",        /* name */
163 
         true,                  /* partial_inplace */
164 
         0xffffffff,            /* src_mask */
165 
         0xffffffff,            /* dst_mask */
166 
         false),                /* pcrel_offset */
167 
 
168 
  /* 26 bit jump address.  */
169 
  HOWTO (R_MIPS_26,             /* type */
170 
         2,                     /* rightshift */
171 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
172 
         26,                    /* bitsize */
173 
         false,                 /* pc_relative */
174 
         0,                      /* bitpos */
175 
         complain_overflow_dont, /* complain_on_overflow */
176 
                                /* This needs complex overflow
177 
                                   detection, because the upper four
178 
                                   bits must match the PC + 4.  */
179 
         bfd_elf_generic_reloc, /* special_function */
180 
         "R_MIPS_26",           /* name */
181 
         true,                  /* partial_inplace */
182 
         0x03ffffff,            /* src_mask */
183 
         0x03ffffff,            /* dst_mask */
184 
         false),                /* pcrel_offset */
185 
 
186 
  /* High 16 bits of symbol value.  */
187 
  HOWTO (R_MIPS_HI16,           /* type */
188 
         0,                      /* rightshift */
189 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
190 
         16,                    /* bitsize */
191 
         false,                 /* pc_relative */
192 
         0,                      /* bitpos */
193 
         complain_overflow_dont, /* complain_on_overflow */
194 
         mips_elf_hi16_reloc,   /* special_function */
195 
         "R_MIPS_HI16",         /* name */
196 
         true,                  /* partial_inplace */
197 
         0x0000ffff,            /* src_mask */
198 
         0x0000ffff,            /* dst_mask */
199 
         false),                /* pcrel_offset */
200 
 
201 
  /* Low 16 bits of symbol value.  */
202 
  HOWTO (R_MIPS_LO16,           /* type */
203 
         0,                      /* rightshift */
204 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
205 
         16,                    /* bitsize */
206 
         false,                 /* pc_relative */
207 
         0,                      /* bitpos */
208 
         complain_overflow_dont, /* complain_on_overflow */
209 
         mips_elf_lo16_reloc,   /* special_function */
210 
         "R_MIPS_LO16",         /* name */
211 
         true,                  /* partial_inplace */
212 
         0x0000ffff,            /* src_mask */
213 
         0x0000ffff,            /* dst_mask */
214 
         false),                /* pcrel_offset */
215 
 
216 
  /* GP relative reference.  */
217 
  HOWTO (R_MIPS_GPREL16,        /* type */
218 
         0,                      /* rightshift */
219 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
220 
         16,                    /* bitsize */
221 
         false,                 /* pc_relative */
222 
         0,                      /* bitpos */
223 
         complain_overflow_signed, /* complain_on_overflow */
224 
         _bfd_mips_elf32_gprel16_reloc, /* special_function */
225 
         "R_MIPS_GPREL16",      /* name */
226 
         true,                  /* partial_inplace */
227 
         0x0000ffff,            /* src_mask */
228 
         0x0000ffff,            /* dst_mask */
229 
         false),                /* pcrel_offset */
230 
 
231 
  /* Reference to literal section.  */
232 
  HOWTO (R_MIPS_LITERAL,        /* type */
233 
         0,                      /* rightshift */
234 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
235 
         16,                    /* bitsize */
236 
         false,                 /* pc_relative */
237 
         0,                      /* bitpos */
238 
         complain_overflow_signed, /* complain_on_overflow */
239 
         _bfd_mips_elf32_gprel16_reloc, /* special_function */
240 
         "R_MIPS_LITERAL",      /* name */
241 
         true,                  /* partial_inplace */
242 
         0x0000ffff,            /* src_mask */
243 
         0x0000ffff,            /* dst_mask */
244 
         false),                /* pcrel_offset */
245 
 
246 
  /* Reference to global offset table.  */
247 
  HOWTO (R_MIPS_GOT16,          /* type */
248 
         0,                      /* rightshift */
249 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
250 
         16,                    /* bitsize */
251 
         false,                 /* pc_relative */
252 
         0,                      /* bitpos */
253 
         complain_overflow_signed, /* complain_on_overflow */
254 
         mips_elf_got16_reloc,  /* special_function */
255 
         "R_MIPS_GOT16",        /* name */
256 
         true,                  /* partial_inplace */
257 
         0x0000ffff,            /* src_mask */
258 
         0x0000ffff,            /* dst_mask */
259 
         false),                /* pcrel_offset */
260 
 
261 
  /* 16 bit PC relative reference.  */
262 
  HOWTO (R_MIPS_PC16,           /* type */
263 
         0,                      /* rightshift */
264 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
265 
         16,                    /* bitsize */
266 
         true,                  /* pc_relative */
267 
         0,                      /* bitpos */
268 
         complain_overflow_signed, /* complain_on_overflow */
269 
         bfd_elf_generic_reloc, /* special_function */
270 
         "R_MIPS_PC16",         /* name */
271 
         true,                  /* partial_inplace */
272 
         0x0000ffff,            /* src_mask */
273 
         0x0000ffff,            /* dst_mask */
274 
         true),                 /* pcrel_offset */
275 
 
276 
  /* 16 bit call through global offset table.  */
277 
  HOWTO (R_MIPS_CALL16,         /* type */
278 
         0,                      /* rightshift */
279 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
280 
         16,                    /* bitsize */
281 
         false,                 /* pc_relative */
282 
         0,                      /* bitpos */
283 
         complain_overflow_signed, /* complain_on_overflow */
284 
         bfd_elf_generic_reloc, /* special_function */
285 
         "R_MIPS_CALL16",       /* name */
286 
         true,                  /* partial_inplace */
287 
         0x0000ffff,            /* src_mask */
288 
         0x0000ffff,            /* dst_mask */
289 
         false),                /* pcrel_offset */
290 
 
291 
  /* 32 bit GP relative reference.  */
292 
  HOWTO (R_MIPS_GPREL32,        /* type */
293 
         0,                      /* rightshift */
294 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
295 
         32,                    /* bitsize */
296 
         false,                 /* pc_relative */
297 
         0,                      /* bitpos */
298 
         complain_overflow_dont, /* complain_on_overflow */
299 
         mips_elf_gprel32_reloc, /* special_function */
300 
         "R_MIPS_GPREL32",      /* name */
301 
         true,                  /* partial_inplace */
302 
         0xffffffff,            /* src_mask */
303 
         0xffffffff,            /* dst_mask */
304 
         false),                /* pcrel_offset */
305 
 
306 
  /* The remaining relocs are defined on Irix 5, although they are
307 
     not defined by the ABI.  */
308 
  EMPTY_HOWTO (13),
309 
  EMPTY_HOWTO (14),
310 
  EMPTY_HOWTO (15),
311 
 
312 
  /* A 5 bit shift field.  */
313 
  HOWTO (R_MIPS_SHIFT5,         /* type */
314 
         0,                      /* rightshift */
315 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
316 
         5,                     /* bitsize */
317 
         false,                 /* pc_relative */
318 
         6,                     /* bitpos */
319 
         complain_overflow_bitfield, /* complain_on_overflow */
320 
         bfd_elf_generic_reloc, /* special_function */
321 
         "R_MIPS_SHIFT5",       /* name */
322 
         true,                  /* partial_inplace */
323 
         0x000007c0,            /* src_mask */
324 
         0x000007c0,            /* dst_mask */
325 
         false),                /* pcrel_offset */
326 
 
327 
  /* A 6 bit shift field.  */
328 
  /* FIXME: This is not handled correctly; a special function is
329 
     needed to put the most significant bit in the right place.  */
330 
  HOWTO (R_MIPS_SHIFT6,         /* type */
331 
         0,                      /* rightshift */
332 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
333 
         6,                     /* bitsize */
334 
         false,                 /* pc_relative */
335 
         6,                     /* bitpos */
336 
         complain_overflow_bitfield, /* complain_on_overflow */
337 
         bfd_elf_generic_reloc, /* special_function */
338 
         "R_MIPS_SHIFT6",       /* name */
339 
         true,                  /* partial_inplace */
340 
         0x000007c4,            /* src_mask */
341 
         0x000007c4,            /* dst_mask */
342 
         false),                /* pcrel_offset */
343 
 
344 
  /* A 64 bit relocation.  */
345 
  HOWTO (R_MIPS_64,             /* type */
346 
         0,                      /* rightshift */
347 
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
348 
         64,                    /* bitsize */
349 
         false,                 /* pc_relative */
350 
         0,                      /* bitpos */
351 
         complain_overflow_dont, /* complain_on_overflow */
352 
         mips32_64bit_reloc,    /* special_function */
353 
         "R_MIPS_64",           /* name */
354 
         true,                  /* partial_inplace */
355 
         MINUS_ONE,             /* src_mask */
356 
         MINUS_ONE,             /* dst_mask */
357 
         false),                /* pcrel_offset */
358 
 
359 
  /* Displacement in the global offset table.  */
360 
  HOWTO (R_MIPS_GOT_DISP,       /* type */
361 
         0,                      /* rightshift */
362 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
363 
         16,                    /* bitsize */
364 
         false,                 /* pc_relative */
365 
         0,                      /* bitpos */
366 
         complain_overflow_signed, /* complain_on_overflow */
367 
         bfd_elf_generic_reloc, /* special_function */
368 
         "R_MIPS_GOT_DISP",     /* name */
369 
         true,                  /* partial_inplace */
370 
         0x0000ffff,            /* src_mask */
371 
         0x0000ffff,            /* dst_mask */
372 
         false),                /* pcrel_offset */
373 
 
374 
  /* Displacement to page pointer in the global offset table.  */
375 
  HOWTO (R_MIPS_GOT_PAGE,       /* type */
376 
         0,                      /* rightshift */
377 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
378 
         16,                    /* bitsize */
379 
         false,                 /* pc_relative */
380 
         0,                      /* bitpos */
381 
         complain_overflow_signed, /* complain_on_overflow */
382 
         bfd_elf_generic_reloc, /* special_function */
383 
         "R_MIPS_GOT_PAGE",     /* name */
384 
         true,                  /* partial_inplace */
385 
         0x0000ffff,            /* src_mask */
386 
         0x0000ffff,            /* dst_mask */
387 
         false),                /* pcrel_offset */
388 
 
389 
  /* Offset from page pointer in the global offset table.  */
390 
  HOWTO (R_MIPS_GOT_OFST,       /* type */
391 
         0,                      /* rightshift */
392 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
393 
         16,                    /* bitsize */
394 
         false,                 /* pc_relative */
395 
         0,                      /* bitpos */
396 
         complain_overflow_signed, /* complain_on_overflow */
397 
         bfd_elf_generic_reloc, /* special_function */
398 
         "R_MIPS_GOT_OFST",     /* name */
399 
         true,                  /* partial_inplace */
400 
         0x0000ffff,            /* src_mask */
401 
         0x0000ffff,            /* dst_mask */
402 
         false),                /* pcrel_offset */
403 
 
404 
  /* High 16 bits of displacement in global offset table.  */
405 
  HOWTO (R_MIPS_GOT_HI16,       /* type */
406 
         0,                      /* rightshift */
407 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
408 
         16,                    /* bitsize */
409 
         false,                 /* pc_relative */
410 
         0,                      /* bitpos */
411 
         complain_overflow_dont, /* complain_on_overflow */
412 
         bfd_elf_generic_reloc, /* special_function */
413 
         "R_MIPS_GOT_HI16",     /* name */
414 
         true,                  /* partial_inplace */
415 
         0x0000ffff,            /* src_mask */
416 
         0x0000ffff,            /* dst_mask */
417 
         false),                /* pcrel_offset */
418 
 
419 
  /* Low 16 bits of displacement in global offset table.  */
420 
  HOWTO (R_MIPS_GOT_LO16,       /* type */
421 
         0,                      /* rightshift */
422 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
423 
         16,                    /* bitsize */
424 
         false,                 /* pc_relative */
425 
         0,                      /* bitpos */
426 
         complain_overflow_dont, /* complain_on_overflow */
427 
         bfd_elf_generic_reloc, /* special_function */
428 
         "R_MIPS_GOT_LO16",     /* name */
429 
         true,                  /* partial_inplace */
430 
         0x0000ffff,            /* src_mask */
431 
         0x0000ffff,            /* dst_mask */
432 
         false),                /* pcrel_offset */
433 
 
434 
  /* 64 bit subtraction.  Used in the N32 ABI.  */
435 
  HOWTO (R_MIPS_SUB,            /* type */
436 
         0,                      /* rightshift */
437 
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
438 
         64,                    /* bitsize */
439 
         false,                 /* pc_relative */
440 
         0,                      /* bitpos */
441 
         complain_overflow_dont, /* complain_on_overflow */
442 
         bfd_elf_generic_reloc, /* special_function */
443 
         "R_MIPS_SUB",          /* name */
444 
         true,                  /* partial_inplace */
445 
         MINUS_ONE,             /* src_mask */
446 
         MINUS_ONE,             /* dst_mask */
447 
         false),                /* pcrel_offset */
448 
 
449 
  /* Used to cause the linker to insert and delete instructions?  */
450 
  EMPTY_HOWTO (R_MIPS_INSERT_A),
451 
  EMPTY_HOWTO (R_MIPS_INSERT_B),
452 
  EMPTY_HOWTO (R_MIPS_DELETE),
453 
 
454 
  /* Get the higher value of a 64 bit addend.  */
455 
  HOWTO (R_MIPS_HIGHER,         /* type */
456 
         0,                      /* rightshift */
457 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
458 
         16,                    /* bitsize */
459 
         false,                 /* pc_relative */
460 
         0,                      /* bitpos */
461 
         complain_overflow_dont, /* complain_on_overflow */
462 
         bfd_elf_generic_reloc, /* special_function */
463 
         "R_MIPS_HIGHER",       /* name */
464 
         true,                  /* partial_inplace */
465 
         0x0000ffff,            /* src_mask */
466 
         0x0000ffff,            /* dst_mask */
467 
         false),                /* pcrel_offset */
468 
 
469 
  /* Get the highest value of a 64 bit addend.  */
470 
  HOWTO (R_MIPS_HIGHEST,        /* type */
471 
         0,                      /* rightshift */
472 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
473 
         16,                    /* bitsize */
474 
         false,                 /* pc_relative */
475 
         0,                      /* bitpos */
476 
         complain_overflow_dont, /* complain_on_overflow */
477 
         bfd_elf_generic_reloc, /* special_function */
478 
         "R_MIPS_HIGHEST",      /* name */
479 
         true,                  /* partial_inplace */
480 
         0x0000ffff,            /* src_mask */
481 
         0x0000ffff,            /* dst_mask */
482 
         false),                /* pcrel_offset */
483 
 
484 
  /* High 16 bits of displacement in global offset table.  */
485 
  HOWTO (R_MIPS_CALL_HI16,      /* type */
486 
         0,                      /* rightshift */
487 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
488 
         16,                    /* bitsize */
489 
         false,                 /* pc_relative */
490 
         0,                      /* bitpos */
491 
         complain_overflow_dont, /* complain_on_overflow */
492 
         bfd_elf_generic_reloc, /* special_function */
493 
         "R_MIPS_CALL_HI16",    /* name */
494 
         true,                  /* partial_inplace */
495 
         0x0000ffff,            /* src_mask */
496 
         0x0000ffff,            /* dst_mask */
497 
         false),                /* pcrel_offset */
498 
 
499 
  /* Low 16 bits of displacement in global offset table.  */
500 
  HOWTO (R_MIPS_CALL_LO16,      /* type */
501 
         0,                      /* rightshift */
502 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
503 
         16,                    /* bitsize */
504 
         false,                 /* pc_relative */
505 
         0,                      /* bitpos */
506 
         complain_overflow_dont, /* complain_on_overflow */
507 
         bfd_elf_generic_reloc, /* special_function */
508 
         "R_MIPS_CALL_LO16",    /* name */
509 
         true,                  /* partial_inplace */
510 
         0x0000ffff,            /* src_mask */
511 
         0x0000ffff,            /* dst_mask */
512 
         false),                /* pcrel_offset */
513 
 
514 
  /* Section displacement.  */
515 
  HOWTO (R_MIPS_SCN_DISP,       /* type */
516 
         0,                      /* rightshift */
517 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
518 
         32,                    /* bitsize */
519 
         false,                 /* pc_relative */
520 
         0,                      /* bitpos */
521 
         complain_overflow_dont, /* complain_on_overflow */
522 
         bfd_elf_generic_reloc, /* special_function */
523 
         "R_MIPS_SCN_DISP",     /* name */
524 
         true,                  /* partial_inplace */
525 
         0xffffffff,            /* src_mask */
526 
         0xffffffff,            /* dst_mask */
527 
         false),                /* pcrel_offset */
528 
 
529 
  EMPTY_HOWTO (R_MIPS_REL16),
530 
  EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
531 
  EMPTY_HOWTO (R_MIPS_PJUMP),
532 
  EMPTY_HOWTO (R_MIPS_RELGOT),
533 
 
534 
  /* Protected jump conversion.  This is an optimization hint.  No
535 
     relocation is required for correctness.  */
536 
  HOWTO (R_MIPS_JALR,           /* type */
537 
         0,                      /* rightshift */
538 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
539 
         32,                    /* bitsize */
540 
         false,                 /* pc_relative */
541 
         0,                      /* bitpos */
542 
         complain_overflow_dont, /* complain_on_overflow */
543 
         bfd_elf_generic_reloc, /* special_function */
544 
         "R_MIPS_JALR",         /* name */
545 
         false,                 /* partial_inplace */
546 
         0x00000000,            /* src_mask */
547 
         0x00000000,            /* dst_mask */
548 
         false),                /* pcrel_offset */
549 
};
550 
 
551 
/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link.  This
552 
   is a hack to make the linker think that we need 64 bit values.  */
553 
static reloc_howto_type elf_mips_ctor64_howto =
554 
  HOWTO (R_MIPS_64,             /* type */
555 
         0,                      /* rightshift */
556 
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
557 
         32,                    /* bitsize */
558 
         false,                 /* pc_relative */
559 
         0,                      /* bitpos */
560 
         complain_overflow_signed, /* complain_on_overflow */
561 
         mips32_64bit_reloc,    /* special_function */
562 
         "R_MIPS_64",           /* name */
563 
         true,                  /* partial_inplace */
564 
         0xffffffff,            /* src_mask */
565 
         0xffffffff,            /* dst_mask */
566 
         false);                /* pcrel_offset */
567 
 
568 
/* The reloc used for the mips16 jump instruction.  */
569 
static reloc_howto_type elf_mips16_jump_howto =
570 
  HOWTO (R_MIPS16_26,           /* type */
571 
         2,                     /* rightshift */
572 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
573 
         26,                    /* bitsize */
574 
         false,                 /* pc_relative */
575 
         0,                      /* bitpos */
576 
         complain_overflow_dont, /* complain_on_overflow */
577 
                                /* This needs complex overflow
578 
                                   detection, because the upper four
579 
                                   bits must match the PC.  */
580 
         mips16_jump_reloc,     /* special_function */
581 
         "R_MIPS16_26",         /* name */
582 
         true,                  /* partial_inplace */
583 
         0x3ffffff,             /* src_mask */
584 
         0x3ffffff,             /* dst_mask */
585 
         false);                /* pcrel_offset */
586 
 
587 
/* The reloc used for the mips16 gprel instruction.  */
588 
static reloc_howto_type elf_mips16_gprel_howto =
589 
  HOWTO (R_MIPS16_GPREL,        /* type */
590 
         0,                      /* rightshift */
591 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
592 
         16,                    /* bitsize */
593 
         false,                 /* pc_relative */
594 
         0,                      /* bitpos */
595 
         complain_overflow_signed, /* complain_on_overflow */
596 
         mips16_gprel_reloc,    /* special_function */
597 
         "R_MIPS16_GPREL",      /* name */
598 
         true,                  /* partial_inplace */
599 
         0x07ff001f,            /* src_mask */
600 
         0x07ff001f,            /* dst_mask */
601 
         false);                /* pcrel_offset */
602 
 
603 
/* GNU extensions for embedded-pic.  */
604 
/* High 16 bits of symbol value, pc-relative.  */
605 
static reloc_howto_type elf_mips_gnu_rel_hi16 =
606 
  HOWTO (R_MIPS_GNU_REL_HI16,   /* type */
607 
         0,                      /* rightshift */
608 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
609 
         16,                    /* bitsize */
610 
         true,                  /* pc_relative */
611 
         0,                      /* bitpos */
612 
         complain_overflow_dont, /* complain_on_overflow */
613 
         mips_elf_hi16_reloc,   /* special_function */
614 
         "R_MIPS_GNU_REL_HI16", /* name */
615 
         true,                  /* partial_inplace */
616 
         0xffff,                /* src_mask */
617 
         0xffff,                /* dst_mask */
618 
         true);                 /* pcrel_offset */
619 
 
620 
/* Low 16 bits of symbol value, pc-relative.  */
621 
static reloc_howto_type elf_mips_gnu_rel_lo16 =
622 
  HOWTO (R_MIPS_GNU_REL_LO16,   /* type */
623 
         0,                      /* rightshift */
624 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
625 
         16,                    /* bitsize */
626 
         true,                  /* pc_relative */
627 
         0,                      /* bitpos */
628 
         complain_overflow_dont, /* complain_on_overflow */
629 
         mips_elf_lo16_reloc,   /* special_function */
630 
         "R_MIPS_GNU_REL_LO16", /* name */
631 
         true,                  /* partial_inplace */
632 
         0xffff,                /* src_mask */
633 
         0xffff,                /* dst_mask */
634 
         true);                 /* pcrel_offset */
635 
 
636 
/* 16 bit offset for pc-relative branches.  */
637 
static reloc_howto_type elf_mips_gnu_rel16_s2 =
638 
  HOWTO (R_MIPS_GNU_REL16_S2,   /* type */
639 
         2,                     /* rightshift */
640 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
641 
         16,                    /* bitsize */
642 
         true,                  /* pc_relative */
643 
         0,                      /* bitpos */
644 
         complain_overflow_signed, /* complain_on_overflow */
645 
         bfd_elf_generic_reloc, /* special_function */
646 
         "R_MIPS_GNU_REL16_S2", /* name */
647 
         true,                  /* partial_inplace */
648 
         0xffff,                /* src_mask */
649 
         0xffff,                /* dst_mask */
650 
         true);                 /* pcrel_offset */
651 
 
652 
/* 64 bit pc-relative.  */
653 
static reloc_howto_type elf_mips_gnu_pcrel64 =
654 
  HOWTO (R_MIPS_PC64,           /* type */
655 
         0,                      /* rightshift */
656 
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
657 
         64,                    /* bitsize */
658 
         true,                  /* pc_relative */
659 
         0,                      /* bitpos */
660 
         complain_overflow_signed, /* complain_on_overflow */
661 
         bfd_elf_generic_reloc, /* special_function */
662 
         "R_MIPS_PC64",         /* name */
663 
         true,                  /* partial_inplace */
664 
         MINUS_ONE,             /* src_mask */
665 
         MINUS_ONE,             /* dst_mask */
666 
         true);                 /* pcrel_offset */
667 
 
668 
/* 32 bit pc-relative.  */
669 
static reloc_howto_type elf_mips_gnu_pcrel32 =
670 
  HOWTO (R_MIPS_PC32,           /* type */
671 
         0,                      /* rightshift */
672 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
673 
         32,                    /* bitsize */
674 
         true,                  /* pc_relative */
675 
         0,                      /* bitpos */
676 
         complain_overflow_signed, /* complain_on_overflow */
677 
         bfd_elf_generic_reloc, /* special_function */
678 
         "R_MIPS_PC32",         /* name */
679 
         true,                  /* partial_inplace */
680 
         0xffffffff,            /* src_mask */
681 
         0xffffffff,            /* dst_mask */
682 
         true);                 /* pcrel_offset */
683 
 
684 
/* GNU extension to record C++ vtable hierarchy */
685 
static reloc_howto_type elf_mips_gnu_vtinherit_howto =
686 
  HOWTO (R_MIPS_GNU_VTINHERIT,  /* type */
687 
         0,                      /* rightshift */
688 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
689 
         0,                      /* bitsize */
690 
         false,                 /* pc_relative */
691 
         0,                      /* bitpos */
692 
         complain_overflow_dont, /* complain_on_overflow */
693 
         NULL,                  /* special_function */
694 
         "R_MIPS_GNU_VTINHERIT", /* name */
695 
         false,                 /* partial_inplace */
696 
         0,                      /* src_mask */
697 
         0,                      /* dst_mask */
698 
         false);                /* pcrel_offset */
699 
 
700 
/* GNU extension to record C++ vtable member usage */
701 
static reloc_howto_type elf_mips_gnu_vtentry_howto =
702 
  HOWTO (R_MIPS_GNU_VTENTRY,    /* type */
703 
         0,                      /* rightshift */
704 
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
705 
         0,                      /* bitsize */
706 
         false,                 /* pc_relative */
707 
         0,                      /* bitpos */
708 
         complain_overflow_dont, /* complain_on_overflow */
709 
         _bfd_elf_rel_vtable_reloc_fn, /* special_function */
710 
         "R_MIPS_GNU_VTENTRY",  /* name */
711 
         false,                 /* partial_inplace */
712 
         0,                      /* src_mask */
713 
         0,                      /* dst_mask */
714 
         false);                /* pcrel_offset */
715 
 
716 
/* Do a R_MIPS_HI16 relocation.  This has to be done in combination
717 
   with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
718 
   the HI16.  Here we just save the information we need; we do the
719 
   actual relocation when we see the LO16.
720 
 
721 
   MIPS ELF requires that the LO16 immediately follow the HI16.  As a
722 
   GNU extension, for non-pc-relative relocations, we permit an
723 
   arbitrary number of HI16 relocs to be associated with a single LO16
724 
   reloc.  This extension permits gcc to output the HI and LO relocs
725 
   itself.
726 
 
727 
   This cannot be done for PC-relative relocations because both the HI16
728 
   and LO16 parts of the relocations must be done relative to the LO16
729 
   part, and there can be carry to or borrow from the HI16 part.  */
730 
 
731 
struct mips_hi16
732 
{
733 
  struct mips_hi16 *next;
734 
  bfd_byte *addr;
735 
  bfd_vma addend;
736 
};
737 
 
738 
/* FIXME: This should not be a static variable.  */
739 
 
740 
static struct mips_hi16 *mips_hi16_list;
741 
 
742 
static bfd_reloc_status_type
743 
mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section,
744 
                     output_bfd, error_message)
745 
     bfd *abfd ATTRIBUTE_UNUSED;
746 
     arelent *reloc_entry;
747 
     asymbol *symbol;
748 
     PTR data;
749 
     asection *input_section;
750 
     bfd *output_bfd;
751 
     char **error_message;
752 
{
753 
  bfd_reloc_status_type ret;
754 
  bfd_vma relocation;
755 
  struct mips_hi16 *n;
756 
 
757 
  /* If we're relocating, and this is an external symbol, we don't want
758 
     to change anything.  */
759 
  if (output_bfd != (bfd *) NULL
760 
      && (symbol->flags & BSF_SECTION_SYM) == 0
761 
      && reloc_entry->addend == 0)
762 
    {
763 
      reloc_entry->address += input_section->output_offset;
764 
      return bfd_reloc_ok;
765 
    }
766 
 
767 
  ret = bfd_reloc_ok;
768 
 
769 
  if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
770 
    {
771 
      boolean relocateable;
772 
      bfd_vma gp;
773 
 
774 
      if (ret == bfd_reloc_undefined)
775 
        abort ();
776 
 
777 
      if (output_bfd != NULL)
778 
        relocateable = true;
779 
      else
780 
        {
781 
          relocateable = false;
782 
          output_bfd = symbol->section->output_section->owner;
783 
        }
784 
 
785 
      ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
786 
                               error_message, &gp);
787 
      if (ret != bfd_reloc_ok)
788 
        return ret;
789 
 
790 
      relocation = gp - reloc_entry->address;
791 
    }
792 
  else
793 
    {
794 
      if (bfd_is_und_section (symbol->section)
795 
          && output_bfd == (bfd *) NULL)
796 
        ret = bfd_reloc_undefined;
797 
 
798 
      if (bfd_is_com_section (symbol->section))
799 
        relocation = 0;
800 
      else
801 
        relocation = symbol->value;
802 
    }
803 
 
804 
  relocation += symbol->section->output_section->vma;
805 
  relocation += symbol->section->output_offset;
806 
  relocation += reloc_entry->addend;
807 
 
808 
  if (reloc_entry->address > input_section->_cooked_size)
809 
    return bfd_reloc_outofrange;
810 
 
811 
  /* Save the information, and let LO16 do the actual relocation.  */
812 
  n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n);
813 
  if (n == NULL)
814 
    return bfd_reloc_outofrange;
815 
  n->addr = (bfd_byte *) data + reloc_entry->address;
816 
  n->addend = relocation;
817 
  n->next = mips_hi16_list;
818 
  mips_hi16_list = n;
819 
 
820 
  if (output_bfd != (bfd *) NULL)
821 
    reloc_entry->address += input_section->output_offset;
822 
 
823 
  return ret;
824 
}
825 
 
826 
/* Do a R_MIPS_LO16 relocation.  This is a straightforward 16 bit
827 
   inplace relocation; this function exists in order to do the
828 
   R_MIPS_HI16 relocation described above.  */
829 
 
830 
static bfd_reloc_status_type
831 
mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section,
832 
                     output_bfd, error_message)
833 
     bfd *abfd;
834 
     arelent *reloc_entry;
835 
     asymbol *symbol;
836 
     PTR data;
837 
     asection *input_section;
838 
     bfd *output_bfd;
839 
     char **error_message;
840 
{
841 
  arelent gp_disp_relent;
842 
 
843 
  if (mips_hi16_list != NULL)
844 
    {
845 
      struct mips_hi16 *l;
846 
 
847 
      l = mips_hi16_list;
848 
      while (l != NULL)
849 
        {
850 
          unsigned long insn;
851 
          unsigned long val;
852 
          unsigned long vallo;
853 
          struct mips_hi16 *next;
854 
 
855 
          /* Do the HI16 relocation.  Note that we actually don't need
856 
             to know anything about the LO16 itself, except where to
857 
             find the low 16 bits of the addend needed by the LO16.  */
858 
          insn = bfd_get_32 (abfd, l->addr);
859 
          vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
860 
 
861 
          /* The low order 16 bits are always treated as a signed
862 
             value.  */
863 
          vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000;
864 
          val = ((insn & 0xffff) << 16) + vallo;
865 
          val += l->addend;
866 
 
867 
          /* If PC-relative, we need to subtract out the address of the LO
868 
             half of the HI/LO.  (The actual relocation is relative
869 
             to that instruction.)  */
870 
          if (reloc_entry->howto->pc_relative)
871 
            val -= reloc_entry->address;
872 
 
873 
          /* At this point, "val" has the value of the combined HI/LO
874 
             pair.  If the low order 16 bits (which will be used for
875 
             the LO16 insn) are negative, then we will need an
876 
             adjustment for the high order 16 bits.  */
877 
          val += 0x8000;
878 
          val = (val >> 16) & 0xffff;
879 
 
880 
          insn &= ~ (bfd_vma) 0xffff;
881 
          insn |= val;
882 
          bfd_put_32 (abfd, (bfd_vma) insn, l->addr);
883 
 
884 
          if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
885 
            {
886 
              gp_disp_relent = *reloc_entry;
887 
              reloc_entry = &gp_disp_relent;
888 
              reloc_entry->addend = l->addend;
889 
            }
890 
 
891 
          next = l->next;
892 
          free (l);
893 
          l = next;
894 
        }
895 
 
896 
      mips_hi16_list = NULL;
897 
    }
898 
  else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
899 
    {
900 
      bfd_reloc_status_type ret;
901 
      bfd_vma gp, relocation;
902 
 
903 
      /* FIXME: Does this case ever occur?  */
904 
 
905 
      ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp);
906 
      if (ret != bfd_reloc_ok)
907 
        return ret;
908 
 
909 
      relocation = gp - reloc_entry->address;
910 
      relocation += symbol->section->output_section->vma;
911 
      relocation += symbol->section->output_offset;
912 
      relocation += reloc_entry->addend;
913 
 
914 
      if (reloc_entry->address > input_section->_cooked_size)
915 
        return bfd_reloc_outofrange;
916 
 
917 
      gp_disp_relent = *reloc_entry;
918 
      reloc_entry = &gp_disp_relent;
919 
      reloc_entry->addend = relocation - 4;
920 
    }
921 
 
922 
  /* Now do the LO16 reloc in the usual way.  */
923 
  return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
924 
                                input_section, output_bfd, error_message);
925 
}
926 
 
927 
/* Do a R_MIPS_GOT16 reloc.  This is a reloc against the global offset
928 
   table used for PIC code.  If the symbol is an external symbol, the
929 
   instruction is modified to contain the offset of the appropriate
930 
   entry in the global offset table.  If the symbol is a section
931 
   symbol, the next reloc is a R_MIPS_LO16 reloc.  The two 16 bit
932 
   addends are combined to form the real addend against the section
933 
   symbol; the GOT16 is modified to contain the offset of an entry in
934 
   the global offset table, and the LO16 is modified to offset it
935 
   appropriately.  Thus an offset larger than 16 bits requires a
936 
   modified value in the global offset table.
937 
 
938 
   This implementation suffices for the assembler, but the linker does
939 
   not yet know how to create global offset tables.  */
940 
 
941 
static bfd_reloc_status_type
942 
mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
943 
                      output_bfd, error_message)
944 
     bfd *abfd;
945 
     arelent *reloc_entry;
946 
     asymbol *symbol;
947 
     PTR data;
948 
     asection *input_section;
949 
     bfd *output_bfd;
950 
     char **error_message;
951 
{
952 
  /* If we're relocating, and this is an external symbol, we don't want
953 
     to change anything.  */
954 
  if (output_bfd != (bfd *) NULL
955 
      && (symbol->flags & BSF_SECTION_SYM) == 0
956 
      && reloc_entry->addend == 0)
957 
    {
958 
      reloc_entry->address += input_section->output_offset;
959 
      return bfd_reloc_ok;
960 
    }
961 
 
962 
  /* If we're relocating, and this is a local symbol, we can handle it
963 
     just like HI16.  */
964 
  if (output_bfd != (bfd *) NULL
965 
      && (symbol->flags & BSF_SECTION_SYM) != 0)
966 
    return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
967 
                                input_section, output_bfd, error_message);
968 
 
969 
  abort ();
970 
}
971 
 
972 
/* Set the GP value for OUTPUT_BFD.  Returns false if this is a
973 
   dangerous relocation.  */
974 
 
975 
static boolean
976 
mips_elf_assign_gp (output_bfd, pgp)
977 
     bfd *output_bfd;
978 
     bfd_vma *pgp;
979 
{
980 
  unsigned int count;
981 
  asymbol **sym;
982 
  unsigned int i;
983 
 
984 
  /* If we've already figured out what GP will be, just return it.  */
985 
  *pgp = _bfd_get_gp_value (output_bfd);
986 
  if (*pgp)
987 
    return true;
988 
 
989 
  count = bfd_get_symcount (output_bfd);
990 
  sym = bfd_get_outsymbols (output_bfd);
991 
 
992 
  /* The linker script will have created a symbol named `_gp' with the
993 
     appropriate value.  */
994 
  if (sym == (asymbol **) NULL)
995 
    i = count;
996 
  else
997 
    {
998 
      for (i = 0; i < count; i++, sym++)
999 
        {
1000 
          register const char *name;
1001 
 
1002 
          name = bfd_asymbol_name (*sym);
1003 
          if (*name == '_' && strcmp (name, "_gp") == 0)
1004 
            {
1005 
              *pgp = bfd_asymbol_value (*sym);
1006 
              _bfd_set_gp_value (output_bfd, *pgp);
1007 
              break;
1008 
            }
1009 
        }
1010 
    }
1011 
 
1012 
  if (i >= count)
1013 
    {
1014 
      /* Only get the error once.  */
1015 
      *pgp = 4;
1016 
      _bfd_set_gp_value (output_bfd, *pgp);
1017 
      return false;
1018 
    }
1019 
 
1020 
  return true;
1021 
}
1022 
 
1023 
/* We have to figure out the gp value, so that we can adjust the
1024 
   symbol value correctly.  We look up the symbol _gp in the output
1025 
   BFD.  If we can't find it, we're stuck.  We cache it in the ELF
1026 
   target data.  We don't need to adjust the symbol value for an
1027 
   external symbol if we are producing relocateable output.  */
1028 
 
1029 
static bfd_reloc_status_type
1030 
mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
1031 
     bfd *output_bfd;
1032 
     asymbol *symbol;
1033 
     boolean relocateable;
1034 
     char **error_message;
1035 
     bfd_vma *pgp;
1036 
{
1037 
  if (bfd_is_und_section (symbol->section)
1038 
      && ! relocateable)
1039 
    {
1040 
      *pgp = 0;
1041 
      return bfd_reloc_undefined;
1042 
    }
1043 
 
1044 
  *pgp = _bfd_get_gp_value (output_bfd);
1045 
  if (*pgp == 0
1046 
      && (! relocateable
1047 
          || (symbol->flags & BSF_SECTION_SYM) != 0))
1048 
    {
1049 
      if (relocateable)
1050 
        {
1051 
          /* Make up a value.  */
1052 
          *pgp = symbol->section->output_section->vma + 0x4000;
1053 
          _bfd_set_gp_value (output_bfd, *pgp);
1054 
        }
1055 
      else if (!mips_elf_assign_gp (output_bfd, pgp))
1056 
        {
1057 
          *error_message =
1058 
            (char *) _("GP relative relocation when _gp not defined");
1059 
          return bfd_reloc_dangerous;
1060 
        }
1061 
    }
1062 
 
1063 
  return bfd_reloc_ok;
1064 
}
1065 
 
1066 
/* Do a R_MIPS_GPREL16 relocation.  This is a 16 bit value which must
1067 
   become the offset from the gp register.  This function also handles
1068 
   R_MIPS_LITERAL relocations, although those can be handled more
1069 
   cleverly because the entries in the .lit8 and .lit4 sections can be
1070 
   merged.  */
1071 
 
1072 
bfd_reloc_status_type
1073 
_bfd_mips_elf32_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
1074 
                               output_bfd, error_message)
1075 
     bfd *abfd;
1076 
     arelent *reloc_entry;
1077 
     asymbol *symbol;
1078 
     PTR data;
1079 
     asection *input_section;
1080 
     bfd *output_bfd;
1081 
     char **error_message;
1082 
{
1083 
  boolean relocateable;
1084 
  bfd_reloc_status_type ret;
1085 
  bfd_vma gp;
1086 
 
1087 
  /* If we're relocating, and this is an external symbol with no
1088 
     addend, we don't want to change anything.  We will only have an
1089 
     addend if this is a newly created reloc, not read from an ELF
1090 
     file.  */
1091 
  if (output_bfd != (bfd *) NULL
1092 
      && (symbol->flags & BSF_SECTION_SYM) == 0
1093 
      && reloc_entry->addend == 0)
1094 
    {
1095 
      reloc_entry->address += input_section->output_offset;
1096 
      return bfd_reloc_ok;
1097 
    }
1098 
 
1099 
  if (output_bfd != (bfd *) NULL)
1100 
    relocateable = true;
1101 
  else
1102 
    {
1103 
      relocateable = false;
1104 
      output_bfd = symbol->section->output_section->owner;
1105 
    }
1106 
 
1107 
  ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1108 
                           &gp);
1109 
  if (ret != bfd_reloc_ok)
1110 
    return ret;
1111 
 
1112 
  return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1113 
                                        input_section, relocateable,
1114 
                                        data, gp);
1115 
}
1116 
 
1117 
/* Do a R_MIPS_GPREL32 relocation.  This is a 32 bit value which must
1118 
   become the offset from the gp register.  */
1119 
 
1120 
static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *,
1121 
                                                      arelent *, asection *,
1122 
                                                      boolean, PTR, bfd_vma));
1123 
 
1124 
static bfd_reloc_status_type
1125 
mips_elf_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section,
1126 
                        output_bfd, error_message)
1127 
     bfd *abfd;
1128 
     arelent *reloc_entry;
1129 
     asymbol *symbol;
1130 
     PTR data;
1131 
     asection *input_section;
1132 
     bfd *output_bfd;
1133 
     char **error_message;
1134 
{
1135 
  boolean relocateable;
1136 
  bfd_reloc_status_type ret;
1137 
  bfd_vma gp;
1138 
 
1139 
  /* If we're relocating, and this is an external symbol with no
1140 
     addend, we don't want to change anything.  We will only have an
1141 
     addend if this is a newly created reloc, not read from an ELF
1142 
     file.  */
1143 
  if (output_bfd != (bfd *) NULL
1144 
      && (symbol->flags & BSF_SECTION_SYM) == 0
1145 
      && reloc_entry->addend == 0)
1146 
    {
1147 
      *error_message = (char *)
1148 
        _("32bits gp relative relocation occurs for an external symbol");
1149 
      return bfd_reloc_outofrange;
1150 
    }
1151 
 
1152 
  if (output_bfd != (bfd *) NULL)
1153 
    {
1154 
      relocateable = true;
1155 
      gp = _bfd_get_gp_value (output_bfd);
1156 
    }
1157 
  else
1158 
    {
1159 
      relocateable = false;
1160 
      output_bfd = symbol->section->output_section->owner;
1161 
 
1162 
      ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1163 
                               error_message, &gp);
1164 
      if (ret != bfd_reloc_ok)
1165 
        return ret;
1166 
    }
1167 
 
1168 
  return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1169 
                          relocateable, data, gp);
1170 
}
1171 
 
1172 
static bfd_reloc_status_type
1173 
gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
1174 
                 gp)
1175 
     bfd *abfd;
1176 
     asymbol *symbol;
1177 
     arelent *reloc_entry;
1178 
     asection *input_section;
1179 
     boolean relocateable;
1180 
     PTR data;
1181 
     bfd_vma gp;
1182 
{
1183 
  bfd_vma relocation;
1184 
  unsigned long val;
1185 
 
1186 
  if (bfd_is_com_section (symbol->section))
1187 
    relocation = 0;
1188 
  else
1189 
    relocation = symbol->value;
1190 
 
1191 
  relocation += symbol->section->output_section->vma;
1192 
  relocation += symbol->section->output_offset;
1193 
 
1194 
  if (reloc_entry->address > input_section->_cooked_size)
1195 
    return bfd_reloc_outofrange;
1196 
 
1197 
  if (reloc_entry->howto->src_mask == 0)
1198 
    {
1199 
      /* This case arises with the 64-bit MIPS ELF ABI.  */
1200 
      val = 0;
1201 
    }
1202 
  else
1203 
    val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1204 
 
1205 
  /* Set val to the offset into the section or symbol.  */
1206 
  val += reloc_entry->addend;
1207 
 
1208 
  /* Adjust val for the final section location and GP value.  If we
1209 
     are producing relocateable output, we don't want to do this for
1210 
     an external symbol.  */
1211 
  if (! relocateable
1212 
      || (symbol->flags & BSF_SECTION_SYM) != 0)
1213 
    val += relocation - gp;
1214 
 
1215 
  bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address);
1216 
 
1217 
  if (relocateable)
1218 
    reloc_entry->address += input_section->output_offset;
1219 
 
1220 
  return bfd_reloc_ok;
1221 
}
1222 
 
1223 
/* Handle a 64 bit reloc in a 32 bit MIPS ELF file.  These are
1224 
   generated when addresses are 64 bits.  The upper 32 bits are a simple
1225 
   sign extension.  */
1226 
 
1227 
static bfd_reloc_status_type
1228 
mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
1229 
                    output_bfd, error_message)
1230 
     bfd *abfd;
1231 
     arelent *reloc_entry;
1232 
     asymbol *symbol;
1233 
     PTR data;
1234 
     asection *input_section;
1235 
     bfd *output_bfd;
1236 
     char **error_message;
1237 
{
1238 
  bfd_reloc_status_type r;
1239 
  arelent reloc32;
1240 
  unsigned long val;
1241 
  bfd_size_type addr;
1242 
 
1243 
  r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1244 
                             input_section, output_bfd, error_message);
1245 
  if (r != bfd_reloc_continue)
1246 
    return r;
1247 
 
1248 
  /* Do a normal 32 bit relocation on the lower 32 bits.  */
1249 
  reloc32 = *reloc_entry;
1250 
  if (bfd_big_endian (abfd))
1251 
    reloc32.address += 4;
1252 
  reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1253 
  r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1254 
                              output_bfd, error_message);
1255 
 
1256 
  /* Sign extend into the upper 32 bits.  */
1257 
  val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1258 
  if ((val & 0x80000000) != 0)
1259 
    val = 0xffffffff;
1260 
  else
1261 
    val = 0;
1262 
  addr = reloc_entry->address;
1263 
  if (bfd_little_endian (abfd))
1264 
    addr += 4;
1265 
  bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr);
1266 
 
1267 
  return r;
1268 
}
1269 
 
1270 
/* Handle a mips16 jump.  */
1271 
 
1272 
static bfd_reloc_status_type
1273 
mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
1274 
                   output_bfd, error_message)
1275 
     bfd *abfd ATTRIBUTE_UNUSED;
1276 
     arelent *reloc_entry;
1277 
     asymbol *symbol;
1278 
     PTR data ATTRIBUTE_UNUSED;
1279 
     asection *input_section;
1280 
     bfd *output_bfd;
1281 
     char **error_message ATTRIBUTE_UNUSED;
1282 
{
1283 
  if (output_bfd != (bfd *) NULL
1284 
      && (symbol->flags & BSF_SECTION_SYM) == 0
1285 
      && reloc_entry->addend == 0)
1286 
    {
1287 
      reloc_entry->address += input_section->output_offset;
1288 
      return bfd_reloc_ok;
1289 
    }
1290 
 
1291 
  /* FIXME.  */
1292 
  {
1293 
    static boolean warned;
1294 
 
1295 
    if (! warned)
1296 
      (*_bfd_error_handler)
1297 
        (_("Linking mips16 objects into %s format is not supported"),
1298 
         bfd_get_target (input_section->output_section->owner));
1299 
    warned = true;
1300 
  }
1301 
 
1302 
  return bfd_reloc_undefined;
1303 
}
1304 
 
1305 
/* Handle a mips16 GP relative reloc.  */
1306 
 
1307 
static bfd_reloc_status_type
1308 
mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
1309 
                    output_bfd, error_message)
1310 
     bfd *abfd;
1311 
     arelent *reloc_entry;
1312 
     asymbol *symbol;
1313 
     PTR data;
1314 
     asection *input_section;
1315 
     bfd *output_bfd;
1316 
     char **error_message;
1317 
{
1318 
  boolean relocateable;
1319 
  bfd_reloc_status_type ret;
1320 
  bfd_vma gp;
1321 
  unsigned short extend, insn;
1322 
  unsigned long final;
1323 
 
1324 
  /* If we're relocating, and this is an external symbol with no
1325 
     addend, we don't want to change anything.  We will only have an
1326 
     addend if this is a newly created reloc, not read from an ELF
1327 
     file.  */
1328 
  if (output_bfd != NULL
1329 
      && (symbol->flags & BSF_SECTION_SYM) == 0
1330 
      && reloc_entry->addend == 0)
1331 
    {
1332 
      reloc_entry->address += input_section->output_offset;
1333 
      return bfd_reloc_ok;
1334 
    }
1335 
 
1336 
  if (output_bfd != NULL)
1337 
    relocateable = true;
1338 
  else
1339 
    {
1340 
      relocateable = false;
1341 
      output_bfd = symbol->section->output_section->owner;
1342 
    }
1343 
 
1344 
  ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1345 
                           &gp);
1346 
  if (ret != bfd_reloc_ok)
1347 
    return ret;
1348 
 
1349 
  if (reloc_entry->address > input_section->_cooked_size)
1350 
    return bfd_reloc_outofrange;
1351 
 
1352 
  /* Pick up the mips16 extend instruction and the real instruction.  */
1353 
  extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
1354 
  insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
1355 
 
1356 
  /* Stuff the current addend back as a 32 bit value, do the usual
1357 
     relocation, and then clean up.  */
1358 
  bfd_put_32 (abfd,
1359 
              (bfd_vma) (((extend & 0x1f) << 11)
1360 
                         | (extend & 0x7e0)
1361 
                         | (insn & 0x1f)),
1362 
              (bfd_byte *) data + reloc_entry->address);
1363 
 
1364 
  ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1365 
                                       input_section, relocateable, data, gp);
1366 
 
1367 
  final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1368 
  bfd_put_16 (abfd,
1369 
              (bfd_vma) ((extend & 0xf800)
1370 
                         | ((final >> 11) & 0x1f)
1371 
                         | (final & 0x7e0)),
1372 
              (bfd_byte *) data + reloc_entry->address);
1373 
  bfd_put_16 (abfd,
1374 
              (bfd_vma) ((insn & 0xffe0)
1375 
                         | (final & 0x1f)),
1376 
              (bfd_byte *) data + reloc_entry->address + 2);
1377 
 
1378 
  return ret;
1379 
}
1380 
 
1381 
/* A mapping from BFD reloc types to MIPS ELF reloc types.  */
1382 
 
1383 
struct elf_reloc_map {
1384 
  bfd_reloc_code_real_type bfd_val;
1385 
  enum elf_mips_reloc_type elf_val;
1386 
};
1387 
 
1388 
static const struct elf_reloc_map mips_reloc_map[] =
1389 
{
1390 
  { BFD_RELOC_NONE, R_MIPS_NONE },
1391 
  { BFD_RELOC_16, R_MIPS_16 },
1392 
  { BFD_RELOC_32, R_MIPS_32 },
1393 
  /* There is no BFD reloc for R_MIPS_REL32.  */
1394 
  { BFD_RELOC_64, R_MIPS_64 },
1395 
  { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1396 
  { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1397 
  { BFD_RELOC_LO16, R_MIPS_LO16 },
1398 
  { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1399 
  { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1400 
  { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1401 
  { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
1402 
  { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1403 
  { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1404 
  { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1405 
  { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1406 
  { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1407 
  { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1408 
  { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1409 
  { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1410 
  { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1411 
  { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
1412 
};
1413 
 
1414 
/* Given a BFD reloc type, return a howto structure.  */
1415 
 
1416 
static reloc_howto_type *
1417 
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
1418 
     bfd *abfd;
1419 
     bfd_reloc_code_real_type code;
1420 
{
1421 
  unsigned int i;
1422 
  reloc_howto_type *howto_table = elf_mips_howto_table_rel;
1423 
 
1424 
  for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
1425 
       i++)
1426 
    {
1427 
      if (mips_reloc_map[i].bfd_val == code)
1428 
        return &howto_table[(int) mips_reloc_map[i].elf_val];
1429 
    }
1430 
 
1431 
  switch (code)
1432 
    {
1433 
    default:
1434 
      bfd_set_error (bfd_error_bad_value);
1435 
      return NULL;
1436 
 
1437 
    case BFD_RELOC_CTOR:
1438 
      /* We need to handle BFD_RELOC_CTOR specially.
1439 
         Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
1440 
         size of addresses on this architecture.  */
1441 
      if (bfd_arch_bits_per_address (abfd) == 32)
1442 
        return &howto_table[(int) R_MIPS_32];
1443 
      else
1444 
        return &elf_mips_ctor64_howto;
1445 
 
1446 
    case BFD_RELOC_MIPS16_JMP:
1447 
      return &elf_mips16_jump_howto;
1448 
    case BFD_RELOC_MIPS16_GPREL:
1449 
      return &elf_mips16_gprel_howto;
1450 
    case BFD_RELOC_VTABLE_INHERIT:
1451 
      return &elf_mips_gnu_vtinherit_howto;
1452 
    case BFD_RELOC_VTABLE_ENTRY:
1453 
      return &elf_mips_gnu_vtentry_howto;
1454 
    case BFD_RELOC_PCREL_HI16_S:
1455 
      return &elf_mips_gnu_rel_hi16;
1456 
    case BFD_RELOC_PCREL_LO16:
1457 
      return &elf_mips_gnu_rel_lo16;
1458 
    case BFD_RELOC_16_PCREL_S2:
1459 
      return &elf_mips_gnu_rel16_s2;
1460 
    case BFD_RELOC_64_PCREL:
1461 
      return &elf_mips_gnu_pcrel64;
1462 
    case BFD_RELOC_32_PCREL:
1463 
      return &elf_mips_gnu_pcrel32;
1464 
    }
1465 
}
1466 
 
1467 
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure.  */
1468 
 
1469 
static reloc_howto_type *
1470 
mips_elf32_rtype_to_howto (r_type, rela_p)
1471 
     unsigned int r_type;
1472 
     boolean rela_p ATTRIBUTE_UNUSED;
1473 
{
1474 
  switch (r_type)
1475 
    {
1476 
    case R_MIPS16_26:
1477 
      return &elf_mips16_jump_howto;
1478 
    case R_MIPS16_GPREL:
1479 
      return &elf_mips16_gprel_howto;
1480 
    case R_MIPS_GNU_VTINHERIT:
1481 
      return &elf_mips_gnu_vtinherit_howto;
1482 
    case R_MIPS_GNU_VTENTRY:
1483 
      return &elf_mips_gnu_vtentry_howto;
1484 
    case R_MIPS_GNU_REL_HI16:
1485 
      return &elf_mips_gnu_rel_hi16;
1486 
    case R_MIPS_GNU_REL_LO16:
1487 
      return &elf_mips_gnu_rel_lo16;
1488 
    case R_MIPS_GNU_REL16_S2:
1489 
      return &elf_mips_gnu_rel16_s2;
1490 
    case R_MIPS_PC64:
1491 
      return &elf_mips_gnu_pcrel64;
1492 
    case R_MIPS_PC32:
1493 
      return &elf_mips_gnu_pcrel32;
1494 
    default:
1495 
      BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1496 
      return &elf_mips_howto_table_rel[r_type];
1497 
    }
1498 
}
1499 
 
1500 
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure.  */
1501 
 
1502 
static void
1503 
mips_info_to_howto_rel (abfd, cache_ptr, dst)
1504 
     bfd *abfd;
1505 
     arelent *cache_ptr;
1506 
     Elf32_Internal_Rel *dst;
1507 
{
1508 
  unsigned int r_type;
1509 
 
1510 
  r_type = ELF32_R_TYPE (dst->r_info);
1511 
  cache_ptr->howto = mips_elf32_rtype_to_howto (r_type, false);
1512 
 
1513 
  /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1514 
     value for the object file.  We get the addend now, rather than
1515 
     when we do the relocation, because the symbol manipulations done
1516 
     by the linker may cause us to lose track of the input BFD.  */
1517 
  if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1518 
      && (r_type == (unsigned int) R_MIPS_GPREL16
1519 
          || r_type == (unsigned int) R_MIPS_LITERAL))
1520 
    cache_ptr->addend = elf_gp (abfd);
1521 
}
1522 
 
1523 
/* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure.  */
1524 
 
1525 
static void
1526 
mips_info_to_howto_rela (abfd, cache_ptr, dst)
1527 
     bfd *abfd;
1528 
     arelent *cache_ptr;
1529 
     Elf32_Internal_Rela *dst;
1530 
{
1531 
  /* Since an Elf32_Internal_Rel is an initial prefix of an
1532 
     Elf32_Internal_Rela, we can just use mips_info_to_howto_rel
1533 
     above.  */
1534 
  mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst);
1535 
 
1536 
  /* If we ever need to do any extra processing with dst->r_addend
1537 
     (the field omitted in an Elf32_Internal_Rel) we can do it here.  */
1538 
}
1539 
 
1540 
/* Determine whether a symbol is global for the purposes of splitting
1541 
   the symbol table into global symbols and local symbols.  At least
1542 
   on Irix 5, this split must be between section symbols and all other
1543 
   symbols.  On most ELF targets the split is between static symbols
1544 
   and externally visible symbols.  */
1545 
 
1546 
static boolean
1547 
mips_elf_sym_is_global (abfd, sym)
1548 
     bfd *abfd ATTRIBUTE_UNUSED;
1549 
     asymbol *sym;
1550 
{
1551 
  if (SGI_COMPAT (abfd))
1552 
    return (sym->flags & BSF_SECTION_SYM) == 0;
1553 
  else
1554 
    return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1555 
            || bfd_is_und_section (bfd_get_section (sym))
1556 
            || bfd_is_com_section (bfd_get_section (sym)));
1557 
}
1558 
 
1559 
/* Set the right machine number for a MIPS ELF file.  */
1560 
 
1561 
static boolean
1562 
mips_elf32_object_p (abfd)
1563 
     bfd *abfd;
1564 
{
1565 
  unsigned long mach;
1566 
 
1567 
  /* Irix 5 and 6 are broken.  Object file symbol tables are not always
1568 
     sorted correctly such that local symbols precede global symbols,
1569 
     and the sh_info field in the symbol table is not always right.  */
1570 
  if (SGI_COMPAT (abfd))
1571 
    elf_bad_symtab (abfd) = true;
1572 
 
1573 
  if (ABI_N32_P (abfd))
1574 
    return false;
1575 
 
1576 
  mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
1577 
  bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
1578 
 
1579 
  return true;
1580 
}
1581 
 
1582 
/* MIPS ELF local labels start with '$', not 'L'.  */
1583 
 
1584 
static boolean
1585 
mips_elf_is_local_label_name (abfd, name)
1586 
     bfd *abfd;
1587 
     const char *name;
1588 
{
1589 
  if (name[0] == '$')
1590 
    return true;
1591 
 
1592 
  /* On Irix 6, the labels go back to starting with '.', so we accept
1593 
     the generic ELF local label syntax as well.  */
1594 
  return _bfd_elf_is_local_label_name (abfd, name);
1595 
}
1596 
 
1597 
/* Support for core dump NOTE sections.  */
1598 
static boolean
1599 
elf32_mips_grok_prstatus (abfd, note)
1600 
     bfd *abfd;
1601 
     Elf_Internal_Note *note;
1602 
{
1603 
  int offset;
1604 
  unsigned int raw_size;
1605 
 
1606 
  switch (note->descsz)
1607 
    {
1608 
      default:
1609 
        return false;
1610 
 
1611 
      case 256:         /* Linux/MIPS */
1612 
        /* pr_cursig */
1613 
        elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1614 
 
1615 
        /* pr_pid */
1616 
        elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1617 
 
1618 
        /* pr_reg */
1619 
        offset = 72;
1620 
        raw_size = 180;
1621 
 
1622 
        break;
1623 
    }
1624 
 
1625 
  /* Make a ".reg/999" section.  */
1626 
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1627 
                                          raw_size, note->descpos + offset);
1628 
}
1629 
 
1630 
static boolean
1631 
elf32_mips_grok_psinfo (abfd, note)
1632 
     bfd *abfd;
1633 
     Elf_Internal_Note *note;
1634 
{
1635 
  switch (note->descsz)
1636 
    {
1637 
      default:
1638 
        return false;
1639 
 
1640 
      case 128:         /* Linux/MIPS elf_prpsinfo */
1641 
        elf_tdata (abfd)->core_program
1642 
         = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1643 
        elf_tdata (abfd)->core_command
1644 
         = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1645 
    }
1646 
 
1647 
  /* Note that for some reason, a spurious space is tacked
1648 
     onto the end of the args in some (at least one anyway)
1649 
     implementations, so strip it off if it exists.  */
1650 
 
1651 
  {
1652 
    char *command = elf_tdata (abfd)->core_command;
1653 
    int n = strlen (command);
1654 
 
1655 
    if (0 < n && command[n - 1] == ' ')
1656 
      command[n - 1] = '\0';
1657 
  }
1658 
 
1659 
  return true;
1660 
}
1661 
 
1662 
/* Depending on the target vector we generate some version of Irix
1663 
   executables or "normal" MIPS ELF ABI executables.  */
1664 
static irix_compat_t
1665 
elf32_mips_irix_compat (abfd)
1666 
     bfd *abfd;
1667 
{
1668 
  if ((abfd->xvec == &bfd_elf32_bigmips_vec)
1669 
      || (abfd->xvec == &bfd_elf32_littlemips_vec))
1670 
    return ict_irix5;
1671 
  else
1672 
    return ict_none;
1673 
}
1674 
 
1675 
/* Given a data section and an in-memory embedded reloc section, store
1676 
   relocation information into the embedded reloc section which can be
1677 
   used at runtime to relocate the data section.  This is called by the
1678 
   linker when the --embedded-relocs switch is used.  This is called
1679 
   after the add_symbols entry point has been called for all the
1680 
   objects, and before the final_link entry point is called.  */
1681 
 
1682 
boolean
1683 
bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
1684 
     bfd *abfd;
1685 
     struct bfd_link_info *info;
1686 
     asection *datasec;
1687 
     asection *relsec;
1688 
     char **errmsg;
1689 
{
1690 
  Elf_Internal_Shdr *symtab_hdr;
1691 
  Elf_Internal_Sym *isymbuf = NULL;
1692 
  Elf_Internal_Rela *internal_relocs = NULL;
1693 
  Elf_Internal_Rela *irel, *irelend;
1694 
  bfd_byte *p;
1695 
 
1696 
  BFD_ASSERT (! info->relocateable);
1697 
 
1698 
  *errmsg = NULL;
1699 
 
1700 
  if (datasec->reloc_count == 0)
1701 
    return true;
1702 
 
1703 
  /* Read this BFD's symbols if we haven't done so already, or get the cached
1704 
     copy if it exists.  */
1705 
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1706 
  if (symtab_hdr->sh_info != 0)
1707 
    {
1708 
      isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1709 
      if (isymbuf == NULL)
1710 
        isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1711 
                                        symtab_hdr->sh_info, 0,
1712 
                                        NULL, NULL, NULL);
1713 
      if (isymbuf == NULL)
1714 
        goto error_return;
1715 
    }
1716 
 
1717 
  /* Get a copy of the native relocations.  */
1718 
  internal_relocs = (_bfd_elf32_link_read_relocs
1719 
                     (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1720 
                      info->keep_memory));
1721 
  if (internal_relocs == NULL)
1722 
    goto error_return;
1723 
 
1724 
  relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12);
1725 
  if (relsec->contents == NULL)
1726 
    goto error_return;
1727 
 
1728 
  p = relsec->contents;
1729 
 
1730 
  irelend = internal_relocs + datasec->reloc_count;
1731 
 
1732 
  for (irel = internal_relocs; irel < irelend; irel++, p += 12)
1733 
    {
1734 
      asection *targetsec;
1735 
 
1736 
      /* We are going to write a four byte longword into the runtime
1737 
         reloc section.  The longword will be the address in the data
1738 
         section which must be relocated.  It is followed by the name
1739 
         of the target section NUL-padded or truncated to 8
1740 
         characters.  */
1741 
 
1742 
      /* We can only relocate absolute longword relocs at run time.  */
1743 
      if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) &&
1744 
          (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64))
1745 
        {
1746 
          *errmsg = _("unsupported reloc type");
1747 
          bfd_set_error (bfd_error_bad_value);
1748 
          goto error_return;
1749 
        }
1750 
      /* Get the target section referred to by the reloc.  */
1751 
      if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1752 
        {
1753 
          Elf_Internal_Sym *isym;
1754 
 
1755 
          /* A local symbol.  */
1756 
          isym = isymbuf + ELF32_R_SYM (irel->r_info);
1757 
          targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1758 
        }
1759 
      else
1760 
        {
1761 
          unsigned long indx;
1762 
          struct elf_link_hash_entry *h;
1763 
 
1764 
          /* An external symbol.  */
1765 
          indx = ELF32_R_SYM (irel->r_info);
1766 
          h = elf_sym_hashes (abfd)[indx];
1767 
          targetsec = NULL;
1768 
          /*
1769 
             For some reason, in certain programs, the symbol will
1770 
             not be in the hash table.  It seems to happen when you
1771 
             declare a static table of pointers to const external structures.
1772 
             In this case, the relocs are relative to data, not
1773 
             text, so just treating it like an undefined link
1774 
             should be sufficient.  */
1775 
          BFD_ASSERT(h != NULL);
1776 
          if (h->root.type == bfd_link_hash_defined
1777 
              || h->root.type == bfd_link_hash_defweak)
1778 
            targetsec = h->root.u.def.section;
1779 
        }
1780 
 
1781 
 
1782 
      /*
1783 
         Set the low bit of the relocation offset if it's a MIPS64 reloc.
1784 
         Relocations will always be on (at least) 32-bit boundaries.  */
1785 
 
1786 
      bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) +
1787 
                  ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)),
1788 
                  p);
1789 
      memset (p + 4, 0, 8);
1790 
      if (targetsec != NULL)
1791 
        strncpy (p + 4, targetsec->output_section->name, 8);
1792 
    }
1793 
 
1794 
  if (internal_relocs != NULL
1795 
      && elf_section_data (datasec)->relocs != internal_relocs)
1796 
    free (internal_relocs);
1797 
  if (isymbuf != NULL
1798 
      && symtab_hdr->contents != (unsigned char *) isymbuf)
1799 
    free (isymbuf);
1800 
  return true;
1801 
 
1802 
 error_return:
1803 
  if (internal_relocs != NULL
1804 
      && elf_section_data (datasec)->relocs != internal_relocs)
1805 
    free (internal_relocs);
1806 
  if (isymbuf != NULL
1807 
      && symtab_hdr->contents != (unsigned char *) isymbuf)
1808 
    free (isymbuf);
1809 
  return false;
1810 
}
1811 
 
1812 
/* ECOFF swapping routines.  These are used when dealing with the
1813 
   .mdebug section, which is in the ECOFF debugging format.  */
1814 
static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
1815 
  /* Symbol table magic number.  */
1816 
  magicSym,
1817 
  /* Alignment of debugging information.  E.g., 4.  */
1818 
  4,
1819 
  /* Sizes of external symbolic information.  */
1820 
  sizeof (struct hdr_ext),
1821 
  sizeof (struct dnr_ext),
1822 
  sizeof (struct pdr_ext),
1823 
  sizeof (struct sym_ext),
1824 
  sizeof (struct opt_ext),
1825 
  sizeof (struct fdr_ext),
1826 
  sizeof (struct rfd_ext),
1827 
  sizeof (struct ext_ext),
1828 
  /* Functions to swap in external symbolic data.  */
1829 
  ecoff_swap_hdr_in,
1830 
  ecoff_swap_dnr_in,
1831 
  ecoff_swap_pdr_in,
1832 
  ecoff_swap_sym_in,
1833 
  ecoff_swap_opt_in,
1834 
  ecoff_swap_fdr_in,
1835 
  ecoff_swap_rfd_in,
1836 
  ecoff_swap_ext_in,
1837 
  _bfd_ecoff_swap_tir_in,
1838 
  _bfd_ecoff_swap_rndx_in,
1839 
  /* Functions to swap out external symbolic data.  */
1840 
  ecoff_swap_hdr_out,
1841 
  ecoff_swap_dnr_out,
1842 
  ecoff_swap_pdr_out,
1843 
  ecoff_swap_sym_out,
1844 
  ecoff_swap_opt_out,
1845 
  ecoff_swap_fdr_out,
1846 
  ecoff_swap_rfd_out,
1847 
  ecoff_swap_ext_out,
1848 
  _bfd_ecoff_swap_tir_out,
1849 
  _bfd_ecoff_swap_rndx_out,
1850 
  /* Function to read in symbolic data.  */
1851 
  _bfd_mips_elf_read_ecoff_info
1852 
};
1853 
 
1854 
#define ELF_ARCH                        bfd_arch_mips
1855 
#define ELF_MACHINE_CODE                EM_MIPS
1856 
 
1857 
/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
1858 
   a value of 0x1000, and we are compatible.  */
1859 
#define ELF_MAXPAGESIZE                 0x1000
1860 
 
1861 
#define elf_backend_collect             true
1862 
#define elf_backend_type_change_ok      true
1863 
#define elf_backend_can_gc_sections     true
1864 
#define elf_info_to_howto               mips_info_to_howto_rela
1865 
#define elf_info_to_howto_rel           mips_info_to_howto_rel
1866 
#define elf_backend_sym_is_global       mips_elf_sym_is_global
1867 
#define elf_backend_object_p            mips_elf32_object_p
1868 
#define elf_backend_symbol_processing   _bfd_mips_elf_symbol_processing
1869 
#define elf_backend_section_processing  _bfd_mips_elf_section_processing
1870 
#define elf_backend_section_from_shdr   _bfd_mips_elf_section_from_shdr
1871 
#define elf_backend_fake_sections       _bfd_mips_elf_fake_sections
1872 
#define elf_backend_section_from_bfd_section \
1873 
                                        _bfd_mips_elf_section_from_bfd_section
1874 
#define elf_backend_add_symbol_hook     _bfd_mips_elf_add_symbol_hook
1875 
#define elf_backend_link_output_symbol_hook \
1876 
                                        _bfd_mips_elf_link_output_symbol_hook
1877 
#define elf_backend_create_dynamic_sections \
1878 
                                        _bfd_mips_elf_create_dynamic_sections
1879 
#define elf_backend_check_relocs        _bfd_mips_elf_check_relocs
1880 
#define elf_backend_adjust_dynamic_symbol \
1881 
                                        _bfd_mips_elf_adjust_dynamic_symbol
1882 
#define elf_backend_always_size_sections \
1883 
                                        _bfd_mips_elf_always_size_sections
1884 
#define elf_backend_size_dynamic_sections \
1885 
                                        _bfd_mips_elf_size_dynamic_sections
1886 
#define elf_backend_relocate_section    _bfd_mips_elf_relocate_section
1887 
#define elf_backend_finish_dynamic_symbol \
1888 
                                        _bfd_mips_elf_finish_dynamic_symbol
1889 
#define elf_backend_finish_dynamic_sections \
1890 
                                        _bfd_mips_elf_finish_dynamic_sections
1891 
#define elf_backend_final_write_processing \
1892 
                                        _bfd_mips_elf_final_write_processing
1893 
#define elf_backend_additional_program_headers \
1894 
                                        _bfd_mips_elf_additional_program_headers
1895 
#define elf_backend_modify_segment_map  _bfd_mips_elf_modify_segment_map
1896 
#define elf_backend_gc_mark_hook        _bfd_mips_elf_gc_mark_hook
1897 
#define elf_backend_gc_sweep_hook       _bfd_mips_elf_gc_sweep_hook
1898 
#define elf_backend_copy_indirect_symbol \
1899 
                                        _bfd_mips_elf_copy_indirect_symbol
1900 
#define elf_backend_hide_symbol         _bfd_mips_elf_hide_symbol
1901 
#define elf_backend_grok_prstatus       elf32_mips_grok_prstatus
1902 
#define elf_backend_grok_psinfo         elf32_mips_grok_psinfo
1903 
#define elf_backend_ecoff_debug_swap    &mips_elf32_ecoff_debug_swap
1904 
 
1905 
#define elf_backend_got_header_size     (4 * MIPS_RESERVED_GOTNO)
1906 
#define elf_backend_plt_header_size     0
1907 
#define elf_backend_may_use_rel_p       1
1908 
#define elf_backend_may_use_rela_p      0
1909 
#define elf_backend_default_use_rela_p  0
1910 
#define elf_backend_sign_extend_vma     true
1911 
 
1912 
#define elf_backend_discard_info        _bfd_mips_elf_discard_info
1913 
#define elf_backend_ignore_discarded_relocs \
1914 
                                        _bfd_mips_elf_ignore_discarded_relocs
1915 
#define elf_backend_mips_irix_compat    elf32_mips_irix_compat
1916 
#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
1917 
#define bfd_elf32_bfd_is_local_label_name \
1918 
                                        mips_elf_is_local_label_name
1919 
#define bfd_elf32_find_nearest_line     _bfd_mips_elf_find_nearest_line
1920 
#define bfd_elf32_set_section_contents  _bfd_mips_elf_set_section_contents
1921 
#define bfd_elf32_bfd_get_relocated_section_contents \
1922 
                                _bfd_elf_mips_get_relocated_section_contents
1923 
#define bfd_elf32_bfd_link_hash_table_create \
1924 
                                        _bfd_mips_elf_link_hash_table_create
1925 
#define bfd_elf32_bfd_final_link        _bfd_mips_elf_final_link
1926 
#define bfd_elf32_bfd_merge_private_bfd_data \
1927 
                                        _bfd_mips_elf_merge_private_bfd_data
1928 
#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
1929 
#define bfd_elf32_bfd_print_private_bfd_data \
1930 
                                        _bfd_mips_elf_print_private_bfd_data
1931 
 
1932 
/* Support for SGI-ish mips targets.  */
1933 
#define TARGET_LITTLE_SYM               bfd_elf32_littlemips_vec
1934 
#define TARGET_LITTLE_NAME              "elf32-littlemips"
1935 
#define TARGET_BIG_SYM                  bfd_elf32_bigmips_vec
1936 
#define TARGET_BIG_NAME                 "elf32-bigmips"
1937 
 
1938 
#include "elf32-target.h"
1939 
 
1940 
/* Support for traditional mips targets.  */
1941 
#define INCLUDED_TARGET_FILE            /* More a type of flag.  */
1942 
 
1943 
#undef TARGET_LITTLE_SYM
1944 
#undef TARGET_LITTLE_NAME
1945 
#undef TARGET_BIG_SYM
1946 
#undef TARGET_BIG_NAME
1947 
 
1948 
#define TARGET_LITTLE_SYM               bfd_elf32_tradlittlemips_vec
1949 
#define TARGET_LITTLE_NAME              "elf32-tradlittlemips"
1950 
#define TARGET_BIG_SYM                  bfd_elf32_tradbigmips_vec
1951 
#define TARGET_BIG_NAME                 "elf32-tradbigmips"
1952 
 
1953 
/* Include the target file again for this target.  */
1954 
#include "elf32-target.h"

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