1 /* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
22 dependencies. As is the gas & simulator code for the v850. */
30 #include "libiberty.h"
32 /* Sign-extend a 24-bit number. */
33 #define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
35 static reloc_howto_type
*v850_elf_reloc_type_lookup
36 PARAMS ((bfd
*abfd
, bfd_reloc_code_real_type code
));
37 static void v850_elf_info_to_howto_rel
38 PARAMS ((bfd
*, arelent
*, Elf32_Internal_Rel
*));
39 static void v850_elf_info_to_howto_rela
40 PARAMS ((bfd
*, arelent
*, Elf32_Internal_Rela
*));
41 static bfd_reloc_status_type v850_elf_reloc
42 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
43 static boolean v850_elf_is_local_label_name
44 PARAMS ((bfd
*, const char *));
45 static boolean v850_elf_relocate_section
46 PARAMS((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
47 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
48 static bfd_reloc_status_type v850_elf_perform_relocation
49 PARAMS ((bfd
*, unsigned int, bfd_vma
, bfd_byte
*));
50 static boolean v850_elf_check_relocs
51 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*, const Elf_Internal_Rela
*));
52 static void remember_hi16s_reloc
53 PARAMS ((bfd
*, bfd_vma
, bfd_byte
*));
54 static bfd_byte
* find_remembered_hi16s_reloc
55 PARAMS ((bfd_vma
, boolean
*));
56 static bfd_reloc_status_type v850_elf_final_link_relocate
57 PARAMS ((reloc_howto_type
*, bfd
*, bfd
*, asection
*, bfd_byte
*, bfd_vma
,
58 bfd_vma
, bfd_vma
, struct bfd_link_info
*, asection
*, int));
59 static boolean v850_elf_object_p
61 static boolean v850_elf_fake_sections
62 PARAMS ((bfd
*, Elf32_Internal_Shdr
*, asection
*));
63 static void v850_elf_final_write_processing
64 PARAMS ((bfd
*, boolean
));
65 static boolean v850_elf_set_private_flags
66 PARAMS ((bfd
*, flagword
));
67 static boolean v850_elf_merge_private_bfd_data
68 PARAMS ((bfd
*, bfd
*));
69 static boolean v850_elf_print_private_bfd_data
70 PARAMS ((bfd
*, PTR
));
71 static boolean v850_elf_section_from_bfd_section
72 PARAMS ((bfd
*, asection
*, int *));
73 static void v850_elf_symbol_processing
74 PARAMS ((bfd
*, asymbol
*));
75 static boolean v850_elf_add_symbol_hook
76 PARAMS ((bfd
*, struct bfd_link_info
*, const Elf_Internal_Sym
*,
77 const char **, flagword
*, asection
**, bfd_vma
*));
78 static boolean v850_elf_link_output_symbol_hook
79 PARAMS ((bfd
*, struct bfd_link_info
*, const char *,
80 Elf_Internal_Sym
*, asection
*));
81 static boolean v850_elf_section_from_shdr
82 PARAMS ((bfd
*, Elf_Internal_Shdr
*, const char *));
83 static boolean v850_elf_gc_sweep_hook
84 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
85 const Elf_Internal_Rela
*));
86 static asection
* v850_elf_gc_mark_hook
87 PARAMS ((asection
*, struct bfd_link_info
*,
88 Elf_Internal_Rela
*, struct elf_link_hash_entry
*,
90 static bfd_reloc_status_type v850_elf_ignore_reloc
91 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
92 static boolean v850_elf_relax_delete_bytes
93 PARAMS ((bfd
*, asection
*, bfd_vma
, bfd_vma
, int));
94 static boolean v850_elf_relax_section
95 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
97 /* Note: It is REQUIRED that the 'type' value of each entry
98 in this array match the index of the entry in the array. */
99 static reloc_howto_type v850_elf_howto_table
[] =
101 /* This reloc does nothing. */
102 HOWTO (R_V850_NONE
, /* type */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
106 false, /* pc_relative */
108 complain_overflow_bitfield
, /* complain_on_overflow */
109 bfd_elf_generic_reloc
, /* special_function */
110 "R_V850_NONE", /* name */
111 false, /* partial_inplace */
114 false), /* pcrel_offset */
116 /* A PC relative 9 bit branch. */
117 HOWTO (R_V850_9_PCREL
, /* type */
119 2, /* size (0 = byte, 1 = short, 2 = long) */
121 true, /* pc_relative */
123 complain_overflow_bitfield
, /* complain_on_overflow */
124 v850_elf_reloc
, /* special_function */
125 "R_V850_9_PCREL", /* name */
126 false, /* partial_inplace */
127 0x00ffffff, /* src_mask */
128 0x00ffffff, /* dst_mask */
129 true), /* pcrel_offset */
131 /* A PC relative 22 bit branch. */
132 HOWTO (R_V850_22_PCREL
, /* type */
134 2, /* size (0 = byte, 1 = short, 2 = long) */
136 true, /* pc_relative */
138 complain_overflow_signed
, /* complain_on_overflow */
139 v850_elf_reloc
, /* special_function */
140 "R_V850_22_PCREL", /* name */
141 false, /* partial_inplace */
142 0x07ffff80, /* src_mask */
143 0x07ffff80, /* dst_mask */
144 true), /* pcrel_offset */
146 /* High 16 bits of symbol value. */
147 HOWTO (R_V850_HI16_S
, /* type */
149 1, /* size (0 = byte, 1 = short, 2 = long) */
151 false, /* pc_relative */
153 complain_overflow_dont
, /* complain_on_overflow */
154 v850_elf_reloc
, /* special_function */
155 "R_V850_HI16_S", /* name */
156 false, /* partial_inplace */
157 0xffff, /* src_mask */
158 0xffff, /* dst_mask */
159 false), /* pcrel_offset */
161 /* High 16 bits of symbol value. */
162 HOWTO (R_V850_HI16
, /* type */
164 1, /* size (0 = byte, 1 = short, 2 = long) */
166 false, /* pc_relative */
168 complain_overflow_dont
, /* complain_on_overflow */
169 v850_elf_reloc
, /* special_function */
170 "R_V850_HI16", /* name */
171 false, /* partial_inplace */
172 0xffff, /* src_mask */
173 0xffff, /* dst_mask */
174 false), /* pcrel_offset */
176 /* Low 16 bits of symbol value. */
177 HOWTO (R_V850_LO16
, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 false, /* pc_relative */
183 complain_overflow_dont
, /* complain_on_overflow */
184 v850_elf_reloc
, /* special_function */
185 "R_V850_LO16", /* name */
186 false, /* partial_inplace */
187 0xffff, /* src_mask */
188 0xffff, /* dst_mask */
189 false), /* pcrel_offset */
191 /* Simple 32bit reloc. */
192 HOWTO (R_V850_32
, /* type */
194 2, /* size (0 = byte, 1 = short, 2 = long) */
196 false, /* pc_relative */
198 complain_overflow_dont
, /* complain_on_overflow */
199 v850_elf_reloc
, /* special_function */
200 "R_V850_32", /* name */
201 false, /* partial_inplace */
202 0xffffffff, /* src_mask */
203 0xffffffff, /* dst_mask */
204 false), /* pcrel_offset */
206 /* Simple 16bit reloc. */
207 HOWTO (R_V850_16
, /* type */
209 1, /* size (0 = byte, 1 = short, 2 = long) */
211 false, /* pc_relative */
213 complain_overflow_dont
, /* complain_on_overflow */
214 bfd_elf_generic_reloc
, /* special_function */
215 "R_V850_16", /* name */
216 false, /* partial_inplace */
217 0xffff, /* src_mask */
218 0xffff, /* dst_mask */
219 false), /* pcrel_offset */
221 /* Simple 8bit reloc. */
222 HOWTO (R_V850_8
, /* type */
224 0, /* size (0 = byte, 1 = short, 2 = long) */
226 false, /* pc_relative */
228 complain_overflow_dont
, /* complain_on_overflow */
229 bfd_elf_generic_reloc
, /* special_function */
230 "R_V850_8", /* name */
231 false, /* partial_inplace */
234 false), /* pcrel_offset */
236 /* 16 bit offset from the short data area pointer. */
237 HOWTO (R_V850_SDA_16_16_OFFSET
, /* type */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
241 false, /* pc_relative */
243 complain_overflow_dont
, /* complain_on_overflow */
244 v850_elf_reloc
, /* special_function */
245 "R_V850_SDA_16_16_OFFSET", /* name */
246 false, /* partial_inplace */
247 0xffff, /* src_mask */
248 0xffff, /* dst_mask */
249 false), /* pcrel_offset */
251 /* 15 bit offset from the short data area pointer. */
252 HOWTO (R_V850_SDA_15_16_OFFSET
, /* type */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
256 false, /* pc_relative */
258 complain_overflow_dont
, /* complain_on_overflow */
259 v850_elf_reloc
, /* special_function */
260 "R_V850_SDA_15_16_OFFSET", /* name */
261 false, /* partial_inplace */
262 0xfffe, /* src_mask */
263 0xfffe, /* dst_mask */
264 false), /* pcrel_offset */
266 /* 16 bit offset from the zero data area pointer. */
267 HOWTO (R_V850_ZDA_16_16_OFFSET
, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 false, /* pc_relative */
273 complain_overflow_dont
, /* complain_on_overflow */
274 v850_elf_reloc
, /* special_function */
275 "R_V850_ZDA_16_16_OFFSET", /* name */
276 false, /* partial_inplace */
277 0xffff, /* src_mask */
278 0xffff, /* dst_mask */
279 false), /* pcrel_offset */
281 /* 15 bit offset from the zero data area pointer. */
282 HOWTO (R_V850_ZDA_15_16_OFFSET
, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 false, /* pc_relative */
288 complain_overflow_dont
, /* complain_on_overflow */
289 v850_elf_reloc
, /* special_function */
290 "R_V850_ZDA_15_16_OFFSET", /* name */
291 false, /* partial_inplace */
292 0xfffe, /* src_mask */
293 0xfffe, /* dst_mask */
294 false), /* pcrel_offset */
296 /* 6 bit offset from the tiny data area pointer. */
297 HOWTO (R_V850_TDA_6_8_OFFSET
, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 false, /* pc_relative */
303 complain_overflow_dont
, /* complain_on_overflow */
304 v850_elf_reloc
, /* special_function */
305 "R_V850_TDA_6_8_OFFSET", /* name */
306 false, /* partial_inplace */
309 false), /* pcrel_offset */
311 /* 8 bit offset from the tiny data area pointer. */
312 HOWTO (R_V850_TDA_7_8_OFFSET
, /* type */
314 1, /* size (0 = byte, 1 = short, 2 = long) */
316 false, /* pc_relative */
318 complain_overflow_dont
, /* complain_on_overflow */
319 v850_elf_reloc
, /* special_function */
320 "R_V850_TDA_7_8_OFFSET", /* name */
321 false, /* partial_inplace */
324 false), /* pcrel_offset */
326 /* 7 bit offset from the tiny data area pointer. */
327 HOWTO (R_V850_TDA_7_7_OFFSET
, /* type */
329 1, /* size (0 = byte, 1 = short, 2 = long) */
331 false, /* pc_relative */
333 complain_overflow_dont
, /* complain_on_overflow */
334 v850_elf_reloc
, /* special_function */
335 "R_V850_TDA_7_7_OFFSET", /* name */
336 false, /* partial_inplace */
339 false), /* pcrel_offset */
341 /* 16 bit offset from the tiny data area pointer! */
342 HOWTO (R_V850_TDA_16_16_OFFSET
, /* type */
344 1, /* size (0 = byte, 1 = short, 2 = long) */
346 false, /* pc_relative */
348 complain_overflow_dont
, /* complain_on_overflow */
349 v850_elf_reloc
, /* special_function */
350 "R_V850_TDA_16_16_OFFSET", /* name */
351 false, /* partial_inplace */
352 0xffff, /* src_mask */
353 0xfff, /* dst_mask */
354 false), /* pcrel_offset */
356 /* 5 bit offset from the tiny data area pointer. */
357 HOWTO (R_V850_TDA_4_5_OFFSET
, /* type */
359 1, /* size (0 = byte, 1 = short, 2 = long) */
361 false, /* pc_relative */
363 complain_overflow_dont
, /* complain_on_overflow */
364 v850_elf_reloc
, /* special_function */
365 "R_V850_TDA_4_5_OFFSET", /* name */
366 false, /* partial_inplace */
369 false), /* pcrel_offset */
371 /* 4 bit offset from the tiny data area pointer. */
372 HOWTO (R_V850_TDA_4_4_OFFSET
, /* type */
374 1, /* size (0 = byte, 1 = short, 2 = long) */
376 false, /* pc_relative */
378 complain_overflow_dont
, /* complain_on_overflow */
379 v850_elf_reloc
, /* special_function */
380 "R_V850_TDA_4_4_OFFSET", /* name */
381 false, /* partial_inplace */
384 false), /* pcrel_offset */
386 /* 16 bit offset from the short data area pointer. */
387 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET
, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 false, /* pc_relative */
393 complain_overflow_dont
, /* complain_on_overflow */
394 v850_elf_reloc
, /* special_function */
395 "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */
396 false, /* partial_inplace */
397 0xfffe0020, /* src_mask */
398 0xfffe0020, /* dst_mask */
399 false), /* pcrel_offset */
401 /* 16 bit offset from the zero data area pointer. */
402 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET
, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 false, /* pc_relative */
408 complain_overflow_dont
, /* complain_on_overflow */
409 v850_elf_reloc
, /* special_function */
410 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */
411 false, /* partial_inplace */
412 0xfffe0020, /* src_mask */
413 0xfffe0020, /* dst_mask */
414 false), /* pcrel_offset */
416 /* 6 bit offset from the call table base pointer. */
417 HOWTO (R_V850_CALLT_6_7_OFFSET
, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 false, /* pc_relative */
423 complain_overflow_dont
, /* complain_on_overflow */
424 v850_elf_reloc
, /* special_function */
425 "R_V850_CALLT_6_7_OFFSET", /* name */
426 false, /* partial_inplace */
429 false), /* pcrel_offset */
431 /* 16 bit offset from the call table base pointer. */
432 HOWTO (R_V850_CALLT_16_16_OFFSET
, /* type */
434 1, /* size (0 = byte, 1 = short, 2 = long) */
436 false, /* pc_relative */
438 complain_overflow_dont
, /* complain_on_overflow */
439 v850_elf_reloc
, /* special_function */
440 "R_V850_CALLT_16_16_OFFSET", /* name */
441 false, /* partial_inplace */
442 0xffff, /* src_mask */
443 0xffff, /* dst_mask */
444 false), /* pcrel_offset */
446 /* GNU extension to record C++ vtable hierarchy */
447 HOWTO (R_V850_GNU_VTINHERIT
, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 false, /* pc_relative */
453 complain_overflow_dont
, /* complain_on_overflow */
454 NULL
, /* special_function */
455 "R_V850_GNU_VTINHERIT", /* name */
456 false, /* partial_inplace */
459 false), /* pcrel_offset */
461 /* GNU extension to record C++ vtable member usage */
462 HOWTO (R_V850_GNU_VTENTRY
, /* type */
464 2, /* size (0 = byte, 1 = short, 2 = long) */
466 false, /* pc_relative */
468 complain_overflow_dont
, /* complain_on_overflow */
469 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
470 "R_V850_GNU_VTENTRY", /* name */
471 false, /* partial_inplace */
474 false), /* pcrel_offset */
476 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
477 pseudo-op when it finds a function call which can be relaxed. */
478 HOWTO (R_V850_LONGCALL
, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 true, /* pc_relative */
484 complain_overflow_signed
, /* complain_on_overflow */
485 v850_elf_ignore_reloc
, /* special_function */
486 "R_V850_LONGCALL", /* name */
487 false, /* partial_inplace */
490 true), /* pcrel_offset */
492 /* Indicates a .longjump pseudo-op. The compiler will generate a
493 .longjump pseudo-op when it finds a branch which can be relaxed. */
494 HOWTO (R_V850_LONGJUMP
, /* type */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
498 true, /* pc_relative */
500 complain_overflow_signed
, /* complain_on_overflow */
501 v850_elf_ignore_reloc
, /* special_function */
502 "R_V850_LONGJUMP", /* name */
503 false, /* partial_inplace */
506 true), /* pcrel_offset */
508 HOWTO (R_V850_ALIGN
, /* type */
510 1, /* size (0 = byte, 1 = short, 2 = long) */
512 false, /* pc_relative */
514 complain_overflow_unsigned
, /* complain_on_overflow */
515 v850_elf_ignore_reloc
, /* special_function */
516 "R_V850_ALIGN", /* name */
517 false, /* partial_inplace */
520 true), /* pcrel_offset */
523 /* Map BFD reloc types to V850 ELF reloc types. */
525 struct v850_elf_reloc_map
527 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
529 bfd_reloc_code_real_type bfd_reloc_val
;
530 unsigned int elf_reloc_val
;
533 static const struct v850_elf_reloc_map v850_elf_reloc_map
[] =
535 { BFD_RELOC_NONE
, R_V850_NONE
},
536 { BFD_RELOC_V850_9_PCREL
, R_V850_9_PCREL
},
537 { BFD_RELOC_V850_22_PCREL
, R_V850_22_PCREL
},
538 { BFD_RELOC_HI16_S
, R_V850_HI16_S
},
539 { BFD_RELOC_HI16
, R_V850_HI16
},
540 { BFD_RELOC_LO16
, R_V850_LO16
},
541 { BFD_RELOC_32
, R_V850_32
},
542 { BFD_RELOC_16
, R_V850_16
},
543 { BFD_RELOC_8
, R_V850_8
},
544 { BFD_RELOC_V850_SDA_16_16_OFFSET
, R_V850_SDA_16_16_OFFSET
},
545 { BFD_RELOC_V850_SDA_15_16_OFFSET
, R_V850_SDA_15_16_OFFSET
},
546 { BFD_RELOC_V850_ZDA_16_16_OFFSET
, R_V850_ZDA_16_16_OFFSET
},
547 { BFD_RELOC_V850_ZDA_15_16_OFFSET
, R_V850_ZDA_15_16_OFFSET
},
548 { BFD_RELOC_V850_TDA_6_8_OFFSET
, R_V850_TDA_6_8_OFFSET
},
549 { BFD_RELOC_V850_TDA_7_8_OFFSET
, R_V850_TDA_7_8_OFFSET
},
550 { BFD_RELOC_V850_TDA_7_7_OFFSET
, R_V850_TDA_7_7_OFFSET
},
551 { BFD_RELOC_V850_TDA_16_16_OFFSET
, R_V850_TDA_16_16_OFFSET
},
552 { BFD_RELOC_V850_TDA_4_5_OFFSET
, R_V850_TDA_4_5_OFFSET
},
553 { BFD_RELOC_V850_TDA_4_4_OFFSET
, R_V850_TDA_4_4_OFFSET
},
554 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
, R_V850_SDA_16_16_SPLIT_OFFSET
},
555 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
, R_V850_ZDA_16_16_SPLIT_OFFSET
},
556 { BFD_RELOC_V850_CALLT_6_7_OFFSET
, R_V850_CALLT_6_7_OFFSET
},
557 { BFD_RELOC_V850_CALLT_16_16_OFFSET
, R_V850_CALLT_16_16_OFFSET
},
558 { BFD_RELOC_VTABLE_INHERIT
, R_V850_GNU_VTINHERIT
},
559 { BFD_RELOC_VTABLE_ENTRY
, R_V850_GNU_VTENTRY
},
560 { BFD_RELOC_V850_LONGCALL
, R_V850_LONGCALL
},
561 { BFD_RELOC_V850_LONGJUMP
, R_V850_LONGJUMP
},
562 { BFD_RELOC_V850_ALIGN
, R_V850_ALIGN
},
566 /* Map a bfd relocation into the appropriate howto structure. */
568 static reloc_howto_type
*
569 v850_elf_reloc_type_lookup (abfd
, code
)
570 bfd
* abfd ATTRIBUTE_UNUSED
;
571 bfd_reloc_code_real_type code
;
575 for (i
= ARRAY_SIZE (v850_elf_reloc_map
); i
--;)
576 if (v850_elf_reloc_map
[i
].bfd_reloc_val
== code
)
578 unsigned int elf_reloc_val
= v850_elf_reloc_map
[i
].elf_reloc_val
;
580 BFD_ASSERT (v850_elf_howto_table
[elf_reloc_val
].type
== elf_reloc_val
);
582 return v850_elf_howto_table
+ elf_reloc_val
;
588 /* Set the howto pointer for an V850 ELF reloc. */
591 v850_elf_info_to_howto_rel (abfd
, cache_ptr
, dst
)
592 bfd
* abfd ATTRIBUTE_UNUSED
;
594 Elf32_Internal_Rel
* dst
;
598 r_type
= ELF32_R_TYPE (dst
->r_info
);
599 BFD_ASSERT (r_type
< (unsigned int) R_V850_max
);
600 cache_ptr
->howto
= &v850_elf_howto_table
[r_type
];
603 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
605 v850_elf_info_to_howto_rela (abfd
, cache_ptr
, dst
)
606 bfd
* abfd ATTRIBUTE_UNUSED
;
608 Elf32_Internal_Rela
*dst
;
612 r_type
= ELF32_R_TYPE (dst
->r_info
);
613 BFD_ASSERT (r_type
< (unsigned int) R_V850_max
);
614 cache_ptr
->howto
= &v850_elf_howto_table
[r_type
];
617 /* Look through the relocs for a section during the first phase, and
618 allocate space in the global offset table or procedure linkage
622 v850_elf_check_relocs (abfd
, info
, sec
, relocs
)
624 struct bfd_link_info
* info
;
626 const Elf_Internal_Rela
* relocs
;
630 Elf_Internal_Shdr
*symtab_hdr
;
631 struct elf_link_hash_entry
**sym_hashes
;
632 const Elf_Internal_Rela
*rel
;
633 const Elf_Internal_Rela
*rel_end
;
635 enum v850_reloc_type r_type
;
637 const char *common
= (const char *)0;
639 if (info
->relocateable
)
643 fprintf (stderr
, "v850_elf_check_relocs called for section %s in %s\n",
644 bfd_get_section_name (abfd
, sec
),
645 bfd_archive_filename (abfd
));
648 dynobj
= elf_hash_table (info
)->dynobj
;
649 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
650 sym_hashes
= elf_sym_hashes (abfd
);
653 rel_end
= relocs
+ sec
->reloc_count
;
654 for (rel
= relocs
; rel
< rel_end
; rel
++)
656 unsigned long r_symndx
;
657 struct elf_link_hash_entry
*h
;
659 r_symndx
= ELF32_R_SYM (rel
->r_info
);
660 if (r_symndx
< symtab_hdr
->sh_info
)
663 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
665 r_type
= (enum v850_reloc_type
) ELF32_R_TYPE (rel
->r_info
);
671 case R_V850_22_PCREL
:
678 case R_V850_CALLT_6_7_OFFSET
:
679 case R_V850_CALLT_16_16_OFFSET
:
682 /* This relocation describes the C++ object vtable hierarchy.
683 Reconstruct it for later use during GC. */
684 case R_V850_GNU_VTINHERIT
:
685 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
689 /* This relocation describes which C++ vtable entries
690 are actually used. Record for later use during GC. */
691 case R_V850_GNU_VTENTRY
:
692 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
696 case R_V850_SDA_16_16_SPLIT_OFFSET
:
697 case R_V850_SDA_16_16_OFFSET
:
698 case R_V850_SDA_15_16_OFFSET
:
699 other
= V850_OTHER_SDA
;
701 goto small_data_common
;
703 case R_V850_ZDA_16_16_SPLIT_OFFSET
:
704 case R_V850_ZDA_16_16_OFFSET
:
705 case R_V850_ZDA_15_16_OFFSET
:
706 other
= V850_OTHER_ZDA
;
708 goto small_data_common
;
710 case R_V850_TDA_4_5_OFFSET
:
711 case R_V850_TDA_4_4_OFFSET
:
712 case R_V850_TDA_6_8_OFFSET
:
713 case R_V850_TDA_7_8_OFFSET
:
714 case R_V850_TDA_7_7_OFFSET
:
715 case R_V850_TDA_16_16_OFFSET
:
716 other
= V850_OTHER_TDA
;
720 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
725 /* Flag which type of relocation was used. */
727 if ((h
->other
& V850_OTHER_MASK
) != (other
& V850_OTHER_MASK
)
728 && (h
->other
& V850_OTHER_ERROR
) == 0)
731 static char buff
[200]; /* XXX */
733 switch (h
->other
& V850_OTHER_MASK
)
736 msg
= _("Variable `%s' cannot occupy in multiple small data regions");
738 case V850_OTHER_SDA
| V850_OTHER_ZDA
| V850_OTHER_TDA
:
739 msg
= _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
741 case V850_OTHER_SDA
| V850_OTHER_ZDA
:
742 msg
= _("Variable `%s' cannot be in both small and zero data regions simultaneously");
744 case V850_OTHER_SDA
| V850_OTHER_TDA
:
745 msg
= _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
747 case V850_OTHER_ZDA
| V850_OTHER_TDA
:
748 msg
= _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
752 sprintf (buff
, msg
, h
->root
.root
.string
);
753 info
->callbacks
->warning (info
, buff
, h
->root
.root
.string
,
754 abfd
, h
->root
.u
.def
.section
,
757 bfd_set_error (bfd_error_bad_value
);
758 h
->other
|= V850_OTHER_ERROR
;
763 if (h
&& h
->root
.type
== bfd_link_hash_common
765 && !strcmp (bfd_get_section_name (abfd
, h
->root
.u
.c
.p
->section
), "COMMON"))
769 section
= h
->root
.u
.c
.p
->section
= bfd_make_section_old_way (abfd
, common
);
770 section
->flags
|= SEC_IS_COMMON
;
774 fprintf (stderr
, "v850_elf_check_relocs, found %s relocation for %s%s\n",
775 v850_elf_howto_table
[ (int)r_type
].name
,
776 (h
&& h
->root
.root
.string
) ? h
->root
.root
.string
: "<unknown>",
777 (h
->root
.type
== bfd_link_hash_common
) ? ", symbol is common" : "");
786 /* In the old version, when an entry was checked out from the table,
787 it was deleted. This produced an error if the entry was needed
788 more than once, as the second attempted retry failed.
790 In the current version, the entry is not deleted, instead we set
791 the field 'found' to true. If a second lookup matches the same
792 entry, then we know that the hi16s reloc has already been updated
793 and does not need to be updated a second time.
795 TODO - TOFIX: If it is possible that we need to restore 2 different
796 addresses from the same table entry, where the first generates an
797 overflow, whilst the second do not, then this code will fail. */
799 typedef struct hi16s_location
803 unsigned long counter
;
805 struct hi16s_location
* next
;
809 static hi16s_location
* previous_hi16s
;
810 static hi16s_location
* free_hi16s
;
811 static unsigned long hi16s_counter
;
814 remember_hi16s_reloc (abfd
, addend
, address
)
819 hi16s_location
* entry
= NULL
;
820 bfd_size_type amt
= sizeof (* free_hi16s
);
822 /* Find a free structure. */
823 if (free_hi16s
== NULL
)
824 free_hi16s
= (hi16s_location
*) bfd_zalloc (abfd
, amt
);
827 free_hi16s
= free_hi16s
->next
;
829 entry
->addend
= addend
;
830 entry
->address
= address
;
831 entry
->counter
= hi16s_counter
++;
832 entry
->found
= false;
833 entry
->next
= previous_hi16s
;
834 previous_hi16s
= entry
;
836 /* Cope with wrap around of our counter. */
837 if (hi16s_counter
== 0)
839 /* XXX - Assume that all counter entries differ only in their low 16 bits. */
840 for (entry
= previous_hi16s
; entry
!= NULL
; entry
= entry
->next
)
841 entry
->counter
&= 0xffff;
843 hi16s_counter
= 0x10000;
850 find_remembered_hi16s_reloc (addend
, already_found
)
852 boolean
* already_found
;
854 hi16s_location
* match
= NULL
;
855 hi16s_location
* entry
;
856 hi16s_location
* previous
= NULL
;
857 hi16s_location
* prev
;
860 /* Search the table. Record the most recent entry that matches. */
861 for (entry
= previous_hi16s
; entry
; entry
= entry
->next
)
863 if (entry
->addend
== addend
864 && (match
== NULL
|| match
->counter
< entry
->counter
))
876 /* Extract the address. */
877 addr
= match
->address
;
879 /* Remeber if this entry has already been used before. */
881 * already_found
= match
->found
;
883 /* Note that this entry has now been used. */
889 /* FIXME: The code here probably ought to be removed and the code in reloc.c
890 allowed to do its stuff instead. At least for most of the relocs, anwyay. */
892 static bfd_reloc_status_type
893 v850_elf_perform_relocation (abfd
, r_type
, addend
, address
)
900 bfd_signed_vma saddend
= (bfd_signed_vma
) addend
;
905 /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
906 return bfd_reloc_notsupported
;
909 bfd_put_32 (abfd
, addend
, address
);
912 case R_V850_22_PCREL
:
913 if (saddend
> 0x1fffff || saddend
< -0x200000)
914 return bfd_reloc_overflow
;
916 if ((addend
% 2) != 0)
917 return bfd_reloc_dangerous
;
919 insn
= bfd_get_32 (abfd
, address
);
921 insn
|= (((addend
& 0xfffe) << 16) | ((addend
& 0x3f0000) >> 16));
922 bfd_put_32 (abfd
, (bfd_vma
) insn
, address
);
926 if (saddend
> 0xff || saddend
< -0x100)
927 return bfd_reloc_overflow
;
929 if ((addend
% 2) != 0)
930 return bfd_reloc_dangerous
;
932 insn
= bfd_get_16 (abfd
, address
);
934 insn
|= ((addend
& 0x1f0) << 7) | ((addend
& 0x0e) << 3);
938 addend
+= (bfd_get_16 (abfd
, address
) << 16);
939 addend
= (addend
>> 16);
944 /* Remember where this relocation took place. */
945 remember_hi16s_reloc (abfd
, addend
, address
);
947 addend
+= (bfd_get_16 (abfd
, address
) << 16);
948 addend
= (addend
>> 16) + ((addend
& 0x8000) != 0);
950 /* This relocation cannot overflow. */
958 /* Calculate the sum of the value stored in the instruction and the
959 addend and check for overflow from the low 16 bits into the high
960 16 bits. The assembler has already done some of this: If the
961 value stored in the instruction has its 15th bit set, (counting
962 from zero) then the assembler will have added 1 to the value
963 stored in the associated HI16S reloc. So for example, these
966 movhi hi( fred ), r0, r1
967 movea lo( fred ), r1, r1
969 will store 0 in the value fields for the MOVHI and MOVEA instructions
970 and addend will be the address of fred, but for these instructions:
972 movhi hi( fred + 0x123456), r0, r1
973 movea lo( fred + 0x123456), r1, r1
975 the value stored in the MOVHI instruction will be 0x12 and the value
976 stored in the MOVEA instruction will be 0x3456. If however the
979 movhi hi( fred + 0x10ffff), r0, r1
980 movea lo( fred + 0x10ffff), r1, r1
982 then the value stored in the MOVHI instruction would be 0x11 (not
983 0x10) and the value stored in the MOVEA instruction would be 0xffff.
984 Thus (assuming for the moment that the addend is 0), at run time the
985 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
986 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
987 the instructions were:
989 movhi hi( fred - 1), r0, r1
990 movea lo( fred - 1), r1, r1
992 then 0 is stored in the MOVHI instruction and -1 is stored in the
995 Overflow can occur if the addition of the value stored in the
996 instruction plus the addend sets the 15th bit when before it was clear.
997 This is because the 15th bit will be sign extended into the high part,
998 thus reducing its value by one, but since the 15th bit was originally
999 clear, the assembler will not have added 1 to the previous HI16S reloc
1000 to compensate for this effect. For example:
1002 movhi hi( fred + 0x123456), r0, r1
1003 movea lo( fred + 0x123456), r1, r1
1005 The value stored in HI16S reloc is 0x12, the value stored in the LO16
1006 reloc is 0x3456. If we assume that the address of fred is 0x00007000
1007 then the relocations become:
1009 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
1010 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
1012 but when the instructions are executed, the MOVEA instruction's value
1013 is signed extended, so the sum becomes:
1018 0x0011a456 but 'fred + 0x123456' = 0x0012a456
1020 Note that if the 15th bit was set in the value stored in the LO16
1021 reloc, then we do not have to do anything:
1023 movhi hi( fred + 0x10ffff), r0, r1
1024 movea lo( fred + 0x10ffff), r1, r1
1026 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
1027 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
1032 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
1034 Overflow can also occur if the computation carries into the 16th bit
1035 and it also results in the 15th bit having the same value as the 15th
1036 bit of the original value. What happens is that the HI16S reloc
1037 will have already examined the 15th bit of the original value and
1038 added 1 to the high part if the bit is set. This compensates for the
1039 sign extension of 15th bit of the result of the computation. But now
1040 there is a carry into the 16th bit, and this has not been allowed for.
1042 So, for example if fred is at address 0xf000:
1044 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1045 movea lo( fred + 0xffff), r1, r1
1047 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
1048 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
1053 0x0000efff but 'fred + 0xffff' = 0x0001efff
1055 Similarly, if the 15th bit remains clear, but overflow occurs into
1056 the 16th bit then (assuming the address of fred is 0xf000):
1058 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1059 movea lo( fred + 0x7000), r1, r1
1061 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
1062 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1067 0x00006fff but 'fred + 0x7000' = 0x00016fff
1069 Note - there is no need to change anything if a carry occurs, and the
1070 15th bit changes its value from being set to being clear, as the HI16S
1071 reloc will have already added in 1 to the high part for us:
1073 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1074 movea lo( fred + 0xffff), r1, r1
1076 HI16S: 0x0001 + (0x00007000 >> 16)
1077 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1080 + 0x00006fff (bit 15 not set, so the top half is zero)
1082 0x00016fff which is right (assuming that fred is at 0x7000)
1084 but if the 15th bit goes from being clear to being set, then we must
1085 once again handle overflow:
1087 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1088 movea lo( fred + 0x7000), r1, r1
1090 HI16S: 0x0000 + (0x0000ffff >> 16)
1091 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
1094 + 0x00006fff (bit 15 not set, so the top half is zero)
1096 0x00006fff which is wrong (assuming that fred is at 0xffff). */
1100 insn
= bfd_get_16 (abfd
, address
);
1101 result
= insn
+ addend
;
1103 #define BIT15_SET(x) ((x) & 0x8000)
1104 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
1106 if ((BIT15_SET (result
) && ! BIT15_SET (addend
))
1107 || (OVERFLOWS (addend
, insn
)
1108 && ((! BIT15_SET (insn
)) || (BIT15_SET (addend
)))))
1110 boolean already_updated
;
1111 bfd_byte
* hi16s_address
= find_remembered_hi16s_reloc
1112 (addend
, & already_updated
);
1114 /* Amend the matching HI16_S relocation. */
1115 if (hi16s_address
!= NULL
)
1117 if (! already_updated
)
1119 insn
= bfd_get_16 (abfd
, hi16s_address
);
1121 bfd_put_16 (abfd
, (bfd_vma
) insn
, hi16s_address
);
1126 fprintf (stderr
, _("FAILED to find previous HI16 reloc\n"));
1127 return bfd_reloc_overflow
;
1131 /* Do not complain if value has top bit set, as this has been anticipated. */
1132 insn
= result
& 0xffff;
1137 addend
+= (char) bfd_get_8 (abfd
, address
);
1139 saddend
= (bfd_signed_vma
) addend
;
1141 if (saddend
> 0x7f || saddend
< -0x80)
1142 return bfd_reloc_overflow
;
1144 bfd_put_8 (abfd
, addend
, address
);
1145 return bfd_reloc_ok
;
1147 case R_V850_CALLT_16_16_OFFSET
:
1148 addend
+= bfd_get_16 (abfd
, address
);
1150 saddend
= (bfd_signed_vma
) addend
;
1152 if (saddend
> 0xffff || saddend
< 0)
1153 return bfd_reloc_overflow
;
1161 case R_V850_SDA_16_16_OFFSET
:
1162 case R_V850_ZDA_16_16_OFFSET
:
1163 case R_V850_TDA_16_16_OFFSET
:
1164 addend
+= bfd_get_16 (abfd
, address
);
1166 saddend
= (bfd_signed_vma
) addend
;
1168 if (saddend
> 0x7fff || saddend
< -0x8000)
1169 return bfd_reloc_overflow
;
1174 case R_V850_SDA_15_16_OFFSET
:
1175 case R_V850_ZDA_15_16_OFFSET
:
1176 insn
= bfd_get_16 (abfd
, address
);
1177 addend
+= (insn
& 0xfffe);
1179 saddend
= (bfd_signed_vma
) addend
;
1181 if (saddend
> 0x7ffe || saddend
< -0x8000)
1182 return bfd_reloc_overflow
;
1185 return bfd_reloc_dangerous
;
1187 insn
= (addend
&~ (bfd_vma
) 1) | (insn
& 1);
1190 case R_V850_TDA_6_8_OFFSET
:
1191 insn
= bfd_get_16 (abfd
, address
);
1192 addend
+= ((insn
& 0x7e) << 1);
1194 saddend
= (bfd_signed_vma
) addend
;
1196 if (saddend
> 0xfc || saddend
< 0)
1197 return bfd_reloc_overflow
;
1200 return bfd_reloc_dangerous
;
1203 insn
|= (addend
>> 1);
1206 case R_V850_TDA_7_8_OFFSET
:
1207 insn
= bfd_get_16 (abfd
, address
);
1208 addend
+= ((insn
& 0x7f) << 1);
1210 saddend
= (bfd_signed_vma
) addend
;
1212 if (saddend
> 0xfe || saddend
< 0)
1213 return bfd_reloc_overflow
;
1216 return bfd_reloc_dangerous
;
1219 insn
|= (addend
>> 1);
1222 case R_V850_TDA_7_7_OFFSET
:
1223 insn
= bfd_get_16 (abfd
, address
);
1224 addend
+= insn
& 0x7f;
1226 saddend
= (bfd_signed_vma
) addend
;
1228 if (saddend
> 0x7f || saddend
< 0)
1229 return bfd_reloc_overflow
;
1235 case R_V850_TDA_4_5_OFFSET
:
1236 insn
= bfd_get_16 (abfd
, address
);
1237 addend
+= ((insn
& 0xf) << 1);
1239 saddend
= (bfd_signed_vma
) addend
;
1241 if (saddend
> 0x1e || saddend
< 0)
1242 return bfd_reloc_overflow
;
1245 return bfd_reloc_dangerous
;
1248 insn
|= (addend
>> 1);
1251 case R_V850_TDA_4_4_OFFSET
:
1252 insn
= bfd_get_16 (abfd
, address
);
1253 addend
+= insn
& 0xf;
1255 saddend
= (bfd_signed_vma
) addend
;
1257 if (saddend
> 0xf || saddend
< 0)
1258 return bfd_reloc_overflow
;
1264 case R_V850_ZDA_16_16_SPLIT_OFFSET
:
1265 case R_V850_SDA_16_16_SPLIT_OFFSET
:
1266 insn
= bfd_get_32 (abfd
, address
);
1267 addend
+= ((insn
& 0xfffe0000) >> 16) + ((insn
& 0x20) >> 5);
1269 saddend
= (bfd_signed_vma
) addend
;
1271 if (saddend
> 0x7fff || saddend
< -0x8000)
1272 return bfd_reloc_overflow
;
1275 insn
|= (addend
& 1) << 5;
1276 insn
|= (addend
&~ (bfd_vma
) 1) << 16;
1278 bfd_put_32 (abfd
, (bfd_vma
) insn
, address
);
1279 return bfd_reloc_ok
;
1281 case R_V850_CALLT_6_7_OFFSET
:
1282 insn
= bfd_get_16 (abfd
, address
);
1283 addend
+= ((insn
& 0x3f) << 1);
1285 saddend
= (bfd_signed_vma
) addend
;
1287 if (saddend
> 0x7e || saddend
< 0)
1288 return bfd_reloc_overflow
;
1291 return bfd_reloc_dangerous
;
1294 insn
|= (addend
>> 1);
1297 case R_V850_GNU_VTINHERIT
:
1298 case R_V850_GNU_VTENTRY
:
1299 return bfd_reloc_ok
;
1303 bfd_put_16 (abfd
, (bfd_vma
) insn
, address
);
1304 return bfd_reloc_ok
;
1307 /* Insert the addend into the instruction. */
1309 static bfd_reloc_status_type
1310 v850_elf_reloc (abfd
, reloc
, symbol
, data
, isection
, obfd
, err
)
1311 bfd
* abfd ATTRIBUTE_UNUSED
;
1314 PTR data ATTRIBUTE_UNUSED
;
1315 asection
* isection
;
1317 char ** err ATTRIBUTE_UNUSED
;
1321 /* If there is an output BFD,
1322 and the symbol is not a section name (which is only defined at final link time),
1323 and either we are not putting the addend into the instruction
1324 or the addend is zero, so there is nothing to add into the instruction
1325 then just fixup the address and return. */
1326 if (obfd
!= (bfd
*) NULL
1327 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
1328 && (! reloc
->howto
->partial_inplace
1329 || reloc
->addend
== 0))
1331 reloc
->address
+= isection
->output_offset
;
1332 return bfd_reloc_ok
;
1335 /* Catch relocs involving undefined symbols. */
1336 if (bfd_is_und_section (symbol
->section
)
1337 && (symbol
->flags
& BSF_WEAK
) == 0
1339 return bfd_reloc_undefined
;
1341 /* We handle final linking of some relocs ourselves. */
1343 /* Is the address of the relocation really within the section? */
1344 if (reloc
->address
> isection
->_cooked_size
)
1345 return bfd_reloc_outofrange
;
1347 /* Work out which section the relocation is targetted at and the
1348 initial relocation command value. */
1350 if (reloc
->howto
->pc_relative
== true)
1351 return bfd_reloc_ok
;
1353 /* Get symbol value. (Common symbols are special.) */
1354 if (bfd_is_com_section (symbol
->section
))
1357 relocation
= symbol
->value
;
1359 /* Convert input-section-relative symbol value to absolute + addend. */
1360 relocation
+= symbol
->section
->output_section
->vma
;
1361 relocation
+= symbol
->section
->output_offset
;
1362 relocation
+= reloc
->addend
;
1364 #if 0 /* Since this reloc is going to be processed later on, we should
1365 not make it pc-relative here. To test this, try assembling and
1366 linking this program:
1374 .section ".foo","ax"
1378 if (reloc
->howto
->pc_relative
)
1380 /* Here the variable relocation holds the final address of the
1381 symbol we are relocating against, plus any addend. */
1382 relocation
-= isection
->output_section
->vma
+ isection
->output_offset
;
1384 /* Deal with pcrel_offset. */
1385 relocation
-= reloc
->address
;
1388 reloc
->addend
= relocation
;
1389 return bfd_reloc_ok
;
1392 /* This function is used for relocs which are only used
1393 for relaxing, which the linker should otherwise ignore. */
1395 static bfd_reloc_status_type
1396 v850_elf_ignore_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
1397 output_bfd
, error_message
)
1398 bfd
* abfd ATTRIBUTE_UNUSED
;
1399 arelent
* reloc_entry
;
1400 asymbol
* symbol ATTRIBUTE_UNUSED
;
1401 PTR data ATTRIBUTE_UNUSED
;
1402 asection
* input_section
;
1404 char ** error_message ATTRIBUTE_UNUSED
;
1406 if (output_bfd
!= NULL
)
1407 reloc_entry
->address
+= input_section
->output_offset
;
1409 return bfd_reloc_ok
;
1413 v850_elf_is_local_label_name (abfd
, name
)
1414 bfd
* abfd ATTRIBUTE_UNUSED
;
1417 return ( (name
[0] == '.' && (name
[1] == 'L' || name
[1] == '.'))
1418 || (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_'));
1421 /* We overload some of the bfd_reloc error codes for own purposes. */
1422 #define bfd_reloc_gp_not_found bfd_reloc_other
1423 #define bfd_reloc_ep_not_found bfd_reloc_continue
1424 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1426 /* Perform a relocation as part of a final link. */
1428 static bfd_reloc_status_type
1429 v850_elf_final_link_relocate (howto
, input_bfd
, output_bfd
,
1430 input_section
, contents
, offset
, value
,
1431 addend
, info
, sym_sec
, is_local
)
1432 reloc_howto_type
* howto
;
1434 bfd
* output_bfd ATTRIBUTE_UNUSED
;
1435 asection
* input_section
;
1436 bfd_byte
* contents
;
1440 struct bfd_link_info
* info
;
1442 int is_local ATTRIBUTE_UNUSED
;
1444 unsigned int r_type
= howto
->type
;
1445 bfd_byte
* hit_data
= contents
+ offset
;
1447 /* Adjust the value according to the relocation. */
1450 case R_V850_9_PCREL
:
1451 value
-= (input_section
->output_section
->vma
1452 + input_section
->output_offset
);
1456 case R_V850_22_PCREL
:
1457 value
-= (input_section
->output_section
->vma
1458 + input_section
->output_offset
1461 /* If the sign extension will corrupt the value then we have overflowed. */
1462 if (((value
& 0xff000000) != 0x0) && ((value
& 0xff000000) != 0xff000000))
1463 return bfd_reloc_overflow
;
1465 /* Only the bottom 24 bits of the PC are valid */
1466 value
= SEXT24 (value
);
1477 case R_V850_ZDA_15_16_OFFSET
:
1478 case R_V850_ZDA_16_16_OFFSET
:
1479 case R_V850_ZDA_16_16_SPLIT_OFFSET
:
1480 if (sym_sec
== NULL
)
1481 return bfd_reloc_undefined
;
1483 value
-= sym_sec
->output_section
->vma
;
1486 case R_V850_SDA_15_16_OFFSET
:
1487 case R_V850_SDA_16_16_OFFSET
:
1488 case R_V850_SDA_16_16_SPLIT_OFFSET
:
1491 struct bfd_link_hash_entry
* h
;
1493 if (sym_sec
== NULL
)
1494 return bfd_reloc_undefined
;
1496 /* Get the value of __gp. */
1497 h
= bfd_link_hash_lookup (info
->hash
, "__gp", false, false, true);
1498 if (h
== (struct bfd_link_hash_entry
*) NULL
1499 || h
->type
!= bfd_link_hash_defined
)
1500 return bfd_reloc_gp_not_found
;
1502 gp
= (h
->u
.def
.value
1503 + h
->u
.def
.section
->output_section
->vma
1504 + h
->u
.def
.section
->output_offset
);
1506 value
-= sym_sec
->output_section
->vma
;
1507 value
-= (gp
- sym_sec
->output_section
->vma
);
1511 case R_V850_TDA_4_4_OFFSET
:
1512 case R_V850_TDA_4_5_OFFSET
:
1513 case R_V850_TDA_16_16_OFFSET
:
1514 case R_V850_TDA_7_7_OFFSET
:
1515 case R_V850_TDA_7_8_OFFSET
:
1516 case R_V850_TDA_6_8_OFFSET
:
1519 struct bfd_link_hash_entry
* h
;
1521 /* Get the value of __ep. */
1522 h
= bfd_link_hash_lookup (info
->hash
, "__ep", false, false, true);
1523 if (h
== (struct bfd_link_hash_entry
*) NULL
1524 || h
->type
!= bfd_link_hash_defined
)
1525 return bfd_reloc_ep_not_found
;
1527 ep
= (h
->u
.def
.value
1528 + h
->u
.def
.section
->output_section
->vma
1529 + h
->u
.def
.section
->output_offset
);
1535 case R_V850_CALLT_6_7_OFFSET
:
1538 struct bfd_link_hash_entry
* h
;
1540 /* Get the value of __ctbp. */
1541 h
= bfd_link_hash_lookup (info
->hash
, "__ctbp", false, false, true);
1542 if (h
== (struct bfd_link_hash_entry
*) NULL
1543 || h
->type
!= bfd_link_hash_defined
)
1544 return bfd_reloc_ctbp_not_found
;
1546 ctbp
= (h
->u
.def
.value
1547 + h
->u
.def
.section
->output_section
->vma
1548 + h
->u
.def
.section
->output_offset
);
1553 case R_V850_CALLT_16_16_OFFSET
:
1556 struct bfd_link_hash_entry
* h
;
1558 if (sym_sec
== NULL
)
1559 return bfd_reloc_undefined
;
1561 /* Get the value of __ctbp. */
1562 h
= bfd_link_hash_lookup (info
->hash
, "__ctbp", false, false, true);
1563 if (h
== (struct bfd_link_hash_entry
*) NULL
1564 || h
->type
!= bfd_link_hash_defined
)
1565 return bfd_reloc_ctbp_not_found
;
1567 ctbp
= (h
->u
.def
.value
1568 + h
->u
.def
.section
->output_section
->vma
1569 + h
->u
.def
.section
->output_offset
);
1571 value
-= sym_sec
->output_section
->vma
;
1572 value
-= (ctbp
- sym_sec
->output_section
->vma
);
1577 case R_V850_GNU_VTINHERIT
:
1578 case R_V850_GNU_VTENTRY
:
1579 case R_V850_LONGCALL
:
1580 case R_V850_LONGJUMP
:
1582 return bfd_reloc_ok
;
1585 return bfd_reloc_notsupported
;
1588 /* Perform the relocation. */
1589 return v850_elf_perform_relocation (input_bfd
, r_type
, value
+ addend
, hit_data
);
1592 /* Relocate an V850 ELF section. */
1595 v850_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1596 contents
, relocs
, local_syms
, local_sections
)
1598 struct bfd_link_info
* info
;
1600 asection
* input_section
;
1601 bfd_byte
* contents
;
1602 Elf_Internal_Rela
* relocs
;
1603 Elf_Internal_Sym
* local_syms
;
1604 asection
** local_sections
;
1606 Elf_Internal_Shdr
* symtab_hdr
;
1607 struct elf_link_hash_entry
** sym_hashes
;
1608 Elf_Internal_Rela
* rel
;
1609 Elf_Internal_Rela
* relend
;
1611 if (info
->relocateable
)
1614 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
1615 sym_hashes
= elf_sym_hashes (input_bfd
);
1617 if (sym_hashes
== NULL
)
1619 info
->callbacks
->warning
1620 (info
, "no hash table available",
1621 NULL
, input_bfd
, input_section
, (bfd_vma
) 0);
1626 /* Reset the list of remembered HI16S relocs to empty. */
1627 free_hi16s
= previous_hi16s
;
1628 previous_hi16s
= NULL
;
1632 relend
= relocs
+ input_section
->reloc_count
;
1633 for (; rel
< relend
; rel
++)
1636 reloc_howto_type
* howto
;
1637 unsigned long r_symndx
;
1638 Elf_Internal_Sym
* sym
;
1640 struct elf_link_hash_entry
* h
;
1642 bfd_reloc_status_type r
;
1644 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1645 r_type
= ELF32_R_TYPE (rel
->r_info
);
1647 if (r_type
== R_V850_GNU_VTENTRY
1648 || r_type
== R_V850_GNU_VTINHERIT
)
1651 /* This is a final link. */
1652 howto
= v850_elf_howto_table
+ r_type
;
1656 if (r_symndx
< symtab_hdr
->sh_info
)
1658 sym
= local_syms
+ r_symndx
;
1659 sec
= local_sections
[r_symndx
];
1660 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1665 name
= bfd_elf_string_from_elf_section (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
1666 name
= (name
== NULL
) ? "<none>" : name
;
1667 fprintf (stderr
, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
1668 sec
->name
, name
, sym
->st_name
,
1669 sec
->output_section
->vma
, sec
->output_offset
, sym
->st_value
, rel
->r_addend
);
1675 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1677 while (h
->root
.type
== bfd_link_hash_indirect
1678 || h
->root
.type
== bfd_link_hash_warning
)
1679 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1681 if (h
->root
.type
== bfd_link_hash_defined
1682 || h
->root
.type
== bfd_link_hash_defweak
)
1684 sec
= h
->root
.u
.def
.section
;
1685 relocation
= (h
->root
.u
.def
.value
1686 + sec
->output_section
->vma
1687 + sec
->output_offset
);
1689 fprintf (stderr
, "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
1690 sec
->name
, h
->root
.root
.string
, h
->root
.u
.def
.value
, sec
->output_section
->vma
, sec
->output_offset
, relocation
);
1693 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1696 fprintf (stderr
, "undefined: sec: %s, name: %s\n",
1697 sec
->name
, h
->root
.root
.string
);
1703 if (! ((*info
->callbacks
->undefined_symbol
)
1704 (info
, h
->root
.root
.string
, input_bfd
,
1705 input_section
, rel
->r_offset
, true)))
1708 fprintf (stderr
, "unknown: name: %s\n", h
->root
.root
.string
);
1714 /* FIXME: We should use the addend, but the COFF relocations don't. */
1715 r
= v850_elf_final_link_relocate (howto
, input_bfd
, output_bfd
,
1717 contents
, rel
->r_offset
,
1718 relocation
, rel
->r_addend
,
1719 info
, sec
, h
== NULL
);
1721 if (r
!= bfd_reloc_ok
)
1724 const char * msg
= (const char *)0;
1727 name
= h
->root
.root
.string
;
1730 name
= (bfd_elf_string_from_elf_section
1731 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1732 if (name
== NULL
|| *name
== '\0')
1733 name
= bfd_section_name (input_bfd
, sec
);
1738 case bfd_reloc_overflow
:
1739 if (! ((*info
->callbacks
->reloc_overflow
)
1740 (info
, name
, howto
->name
, (bfd_vma
) 0,
1741 input_bfd
, input_section
, rel
->r_offset
)))
1745 case bfd_reloc_undefined
:
1746 if (! ((*info
->callbacks
->undefined_symbol
)
1747 (info
, name
, input_bfd
, input_section
,
1748 rel
->r_offset
, true)))
1752 case bfd_reloc_outofrange
:
1753 msg
= _("internal error: out of range error");
1756 case bfd_reloc_notsupported
:
1757 msg
= _("internal error: unsupported relocation error");
1760 case bfd_reloc_dangerous
:
1761 msg
= _("internal error: dangerous relocation");
1764 case bfd_reloc_gp_not_found
:
1765 msg
= _("could not locate special linker symbol __gp");
1768 case bfd_reloc_ep_not_found
:
1769 msg
= _("could not locate special linker symbol __ep");
1772 case bfd_reloc_ctbp_not_found
:
1773 msg
= _("could not locate special linker symbol __ctbp");
1777 msg
= _("internal error: unknown error");
1781 if (!((*info
->callbacks
->warning
)
1782 (info
, msg
, name
, input_bfd
, input_section
,
1794 v850_elf_gc_sweep_hook (abfd
, info
, sec
, relocs
)
1795 bfd
*abfd ATTRIBUTE_UNUSED
;
1796 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1797 asection
*sec ATTRIBUTE_UNUSED
;
1798 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
;
1800 /* No got and plt entries for v850-elf. */
1805 v850_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
)
1807 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1808 Elf_Internal_Rela
*rel
;
1809 struct elf_link_hash_entry
*h
;
1810 Elf_Internal_Sym
*sym
;
1814 switch (ELF32_R_TYPE (rel
->r_info
))
1816 case R_V850_GNU_VTINHERIT
:
1817 case R_V850_GNU_VTENTRY
:
1821 switch (h
->root
.type
)
1823 case bfd_link_hash_defined
:
1824 case bfd_link_hash_defweak
:
1825 return h
->root
.u
.def
.section
;
1827 case bfd_link_hash_common
:
1828 return h
->root
.u
.c
.p
->section
;
1836 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
1841 /* Set the right machine number. */
1844 v850_elf_object_p (abfd
)
1847 switch (elf_elfheader (abfd
)->e_flags
& EF_V850_ARCH
)
1851 bfd_default_set_arch_mach (abfd
, bfd_arch_v850
, bfd_mach_v850
);
1854 bfd_default_set_arch_mach (abfd
, bfd_arch_v850
, bfd_mach_v850e
);
1860 /* Store the machine number in the flags field. */
1863 v850_elf_final_write_processing (abfd
, linker
)
1865 boolean linker ATTRIBUTE_UNUSED
;
1869 switch (bfd_get_mach (abfd
))
1872 case bfd_mach_v850
: val
= E_V850_ARCH
; break;
1873 case bfd_mach_v850e
: val
= E_V850E_ARCH
; break;
1876 elf_elfheader (abfd
)->e_flags
&=~ EF_V850_ARCH
;
1877 elf_elfheader (abfd
)->e_flags
|= val
;
1880 /* Function to keep V850 specific file flags. */
1883 v850_elf_set_private_flags (abfd
, flags
)
1887 BFD_ASSERT (!elf_flags_init (abfd
)
1888 || elf_elfheader (abfd
)->e_flags
== flags
);
1890 elf_elfheader (abfd
)->e_flags
= flags
;
1891 elf_flags_init (abfd
) = true;
1895 /* Merge backend specific data from an object file
1896 to the output object file when linking. */
1898 v850_elf_merge_private_bfd_data (ibfd
, obfd
)
1905 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
1906 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
1909 in_flags
= elf_elfheader (ibfd
)->e_flags
;
1910 out_flags
= elf_elfheader (obfd
)->e_flags
;
1912 if (! elf_flags_init (obfd
))
1914 /* If the input is the default architecture then do not
1915 bother setting the flags for the output architecture,
1916 instead allow future merges to do this. If no future
1917 merges ever set these flags then they will retain their
1918 unitialised values, which surprise surprise, correspond
1919 to the default values. */
1920 if (bfd_get_arch_info (ibfd
)->the_default
)
1923 elf_flags_init (obfd
) = true;
1924 elf_elfheader (obfd
)->e_flags
= in_flags
;
1926 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
1927 && bfd_get_arch_info (obfd
)->the_default
)
1928 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
1933 /* Check flag compatibility. */
1934 if (in_flags
== out_flags
)
1937 if ((in_flags
& EF_V850_ARCH
) != (out_flags
& EF_V850_ARCH
)
1938 && (in_flags
& EF_V850_ARCH
) != E_V850_ARCH
)
1939 _bfd_error_handler (_("%s: Architecture mismatch with previous modules"),
1940 bfd_archive_filename (ibfd
));
1945 /* Display the flags field. */
1948 v850_elf_print_private_bfd_data (abfd
, ptr
)
1952 FILE * file
= (FILE *) ptr
;
1954 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
1956 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
1958 /* xgettext:c-format */
1959 fprintf (file
, _("private flags = %lx: "), elf_elfheader (abfd
)->e_flags
);
1961 switch (elf_elfheader (abfd
)->e_flags
& EF_V850_ARCH
)
1964 case E_V850_ARCH
: fprintf (file
, _("v850 architecture")); break;
1965 case E_V850E_ARCH
: fprintf (file
, _("v850e architecture")); break;
1973 /* V850 ELF uses four common sections. One is the usual one, and the
1974 others are for (small) objects in one of the special data areas:
1975 small, tiny and zero. All the objects are kept together, and then
1976 referenced via the gp register, the ep register or the r0 register
1977 respectively, which yields smaller, faster assembler code. This
1978 approach is copied from elf32-mips.c. */
1980 static asection v850_elf_scom_section
;
1981 static asymbol v850_elf_scom_symbol
;
1982 static asymbol
* v850_elf_scom_symbol_ptr
;
1983 static asection v850_elf_tcom_section
;
1984 static asymbol v850_elf_tcom_symbol
;
1985 static asymbol
* v850_elf_tcom_symbol_ptr
;
1986 static asection v850_elf_zcom_section
;
1987 static asymbol v850_elf_zcom_symbol
;
1988 static asymbol
* v850_elf_zcom_symbol_ptr
;
1990 /* Given a BFD section, try to locate the
1991 corresponding ELF section index. */
1994 v850_elf_section_from_bfd_section (abfd
, sec
, retval
)
1995 bfd
* abfd ATTRIBUTE_UNUSED
;
1999 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
2000 *retval
= SHN_V850_SCOMMON
;
2001 else if (strcmp (bfd_get_section_name (abfd
, sec
), ".tcommon") == 0)
2002 *retval
= SHN_V850_TCOMMON
;
2003 else if (strcmp (bfd_get_section_name (abfd
, sec
), ".zcommon") == 0)
2004 *retval
= SHN_V850_ZCOMMON
;
2011 /* Handle the special V850 section numbers that a symbol may use. */
2014 v850_elf_symbol_processing (abfd
, asym
)
2018 elf_symbol_type
* elfsym
= (elf_symbol_type
*) asym
;
2021 indx
= elfsym
->internal_elf_sym
.st_shndx
;
2023 /* If the section index is an "ordinary" index, then it may
2024 refer to a v850 specific section created by the assembler.
2025 Check the section's type and change the index it matches.
2027 FIXME: Should we alter the st_shndx field as well ? */
2029 if (indx
< elf_numsections (abfd
))
2030 switch (elf_elfsections(abfd
)[indx
]->sh_type
)
2032 case SHT_V850_SCOMMON
:
2033 indx
= SHN_V850_SCOMMON
;
2036 case SHT_V850_TCOMMON
:
2037 indx
= SHN_V850_TCOMMON
;
2040 case SHT_V850_ZCOMMON
:
2041 indx
= SHN_V850_ZCOMMON
;
2050 case SHN_V850_SCOMMON
:
2051 if (v850_elf_scom_section
.name
== NULL
)
2053 /* Initialize the small common section. */
2054 v850_elf_scom_section
.name
= ".scommon";
2055 v850_elf_scom_section
.flags
= SEC_IS_COMMON
| SEC_ALLOC
| SEC_DATA
;
2056 v850_elf_scom_section
.output_section
= & v850_elf_scom_section
;
2057 v850_elf_scom_section
.symbol
= & v850_elf_scom_symbol
;
2058 v850_elf_scom_section
.symbol_ptr_ptr
= & v850_elf_scom_symbol_ptr
;
2059 v850_elf_scom_symbol
.name
= ".scommon";
2060 v850_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
2061 v850_elf_scom_symbol
.section
= & v850_elf_scom_section
;
2062 v850_elf_scom_symbol_ptr
= & v850_elf_scom_symbol
;
2064 asym
->section
= & v850_elf_scom_section
;
2065 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
2068 case SHN_V850_TCOMMON
:
2069 if (v850_elf_tcom_section
.name
== NULL
)
2071 /* Initialize the tcommon section. */
2072 v850_elf_tcom_section
.name
= ".tcommon";
2073 v850_elf_tcom_section
.flags
= SEC_IS_COMMON
;
2074 v850_elf_tcom_section
.output_section
= & v850_elf_tcom_section
;
2075 v850_elf_tcom_section
.symbol
= & v850_elf_tcom_symbol
;
2076 v850_elf_tcom_section
.symbol_ptr_ptr
= & v850_elf_tcom_symbol_ptr
;
2077 v850_elf_tcom_symbol
.name
= ".tcommon";
2078 v850_elf_tcom_symbol
.flags
= BSF_SECTION_SYM
;
2079 v850_elf_tcom_symbol
.section
= & v850_elf_tcom_section
;
2080 v850_elf_tcom_symbol_ptr
= & v850_elf_tcom_symbol
;
2082 asym
->section
= & v850_elf_tcom_section
;
2083 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
2086 case SHN_V850_ZCOMMON
:
2087 if (v850_elf_zcom_section
.name
== NULL
)
2089 /* Initialize the zcommon section. */
2090 v850_elf_zcom_section
.name
= ".zcommon";
2091 v850_elf_zcom_section
.flags
= SEC_IS_COMMON
;
2092 v850_elf_zcom_section
.output_section
= & v850_elf_zcom_section
;
2093 v850_elf_zcom_section
.symbol
= & v850_elf_zcom_symbol
;
2094 v850_elf_zcom_section
.symbol_ptr_ptr
= & v850_elf_zcom_symbol_ptr
;
2095 v850_elf_zcom_symbol
.name
= ".zcommon";
2096 v850_elf_zcom_symbol
.flags
= BSF_SECTION_SYM
;
2097 v850_elf_zcom_symbol
.section
= & v850_elf_zcom_section
;
2098 v850_elf_zcom_symbol_ptr
= & v850_elf_zcom_symbol
;
2100 asym
->section
= & v850_elf_zcom_section
;
2101 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
2106 /* Hook called by the linker routine which adds symbols from an object
2107 file. We must handle the special v850 section numbers here. */
2110 v850_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
)
2112 struct bfd_link_info
* info ATTRIBUTE_UNUSED
;
2113 const Elf_Internal_Sym
* sym
;
2114 const char ** namep ATTRIBUTE_UNUSED
;
2115 flagword
* flagsp ATTRIBUTE_UNUSED
;
2119 unsigned int indx
= sym
->st_shndx
;
2121 /* If the section index is an "ordinary" index, then it may
2122 refer to a v850 specific section created by the assembler.
2123 Check the section's type and change the index it matches.
2125 FIXME: Should we alter the st_shndx field as well ? */
2127 if (indx
< elf_numsections (abfd
))
2128 switch (elf_elfsections(abfd
)[indx
]->sh_type
)
2130 case SHT_V850_SCOMMON
:
2131 indx
= SHN_V850_SCOMMON
;
2134 case SHT_V850_TCOMMON
:
2135 indx
= SHN_V850_TCOMMON
;
2138 case SHT_V850_ZCOMMON
:
2139 indx
= SHN_V850_ZCOMMON
;
2148 case SHN_V850_SCOMMON
:
2149 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
2150 (*secp
)->flags
|= SEC_IS_COMMON
;
2151 *valp
= sym
->st_size
;
2154 case SHN_V850_TCOMMON
:
2155 *secp
= bfd_make_section_old_way (abfd
, ".tcommon");
2156 (*secp
)->flags
|= SEC_IS_COMMON
;
2157 *valp
= sym
->st_size
;
2160 case SHN_V850_ZCOMMON
:
2161 *secp
= bfd_make_section_old_way (abfd
, ".zcommon");
2162 (*secp
)->flags
|= SEC_IS_COMMON
;
2163 *valp
= sym
->st_size
;
2171 v850_elf_link_output_symbol_hook (abfd
, info
, name
, sym
, input_sec
)
2172 bfd
* abfd ATTRIBUTE_UNUSED
;
2173 struct bfd_link_info
* info ATTRIBUTE_UNUSED
;
2174 const char * name ATTRIBUTE_UNUSED
;
2175 Elf_Internal_Sym
* sym
;
2176 asection
* input_sec
;
2178 /* If we see a common symbol, which implies a relocatable link, then
2179 if a symbol was in a special common section in an input file, mark
2180 it as a special common in the output file. */
2182 if (sym
->st_shndx
== SHN_COMMON
)
2184 if (strcmp (input_sec
->name
, ".scommon") == 0)
2185 sym
->st_shndx
= SHN_V850_SCOMMON
;
2186 else if (strcmp (input_sec
->name
, ".tcommon") == 0)
2187 sym
->st_shndx
= SHN_V850_TCOMMON
;
2188 else if (strcmp (input_sec
->name
, ".zcommon") == 0)
2189 sym
->st_shndx
= SHN_V850_ZCOMMON
;
2196 v850_elf_section_from_shdr (abfd
, hdr
, name
)
2198 Elf_Internal_Shdr
* hdr
;
2201 /* There ought to be a place to keep ELF backend specific flags, but
2202 at the moment there isn't one. We just keep track of the
2203 sections by their name, instead. */
2205 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
2208 switch (hdr
->sh_type
)
2210 case SHT_V850_SCOMMON
:
2211 case SHT_V850_TCOMMON
:
2212 case SHT_V850_ZCOMMON
:
2213 if (! bfd_set_section_flags (abfd
, hdr
->bfd_section
,
2214 (bfd_get_section_flags (abfd
,
2223 /* Set the correct type for a V850 ELF section. We do this
2224 by the section name, which is a hack, but ought to work. */
2227 v850_elf_fake_sections (abfd
, hdr
, sec
)
2228 bfd
* abfd ATTRIBUTE_UNUSED
;
2229 Elf32_Internal_Shdr
* hdr
;
2232 register const char * name
;
2234 name
= bfd_get_section_name (abfd
, sec
);
2236 if (strcmp (name
, ".scommon") == 0)
2238 hdr
->sh_type
= SHT_V850_SCOMMON
;
2240 else if (strcmp (name
, ".tcommon") == 0)
2242 hdr
->sh_type
= SHT_V850_TCOMMON
;
2244 else if (strcmp (name
, ".zcommon") == 0)
2245 hdr
->sh_type
= SHT_V850_ZCOMMON
;
2250 /* Delete some bytes from a section while relaxing. */
2253 v850_elf_relax_delete_bytes (abfd
, sec
, addr
, toaddr
, count
)
2260 Elf_Internal_Shdr
* symtab_hdr
;
2261 Elf32_External_Sym
* extsyms
;
2262 Elf32_External_Sym
* esym
;
2263 Elf32_External_Sym
* esymend
;
2265 unsigned int sec_shndx
;
2266 bfd_byte
* contents
;
2267 Elf_Internal_Rela
* irel
;
2268 Elf_Internal_Rela
* irelend
;
2269 struct elf_link_hash_entry
* sym_hash
;
2270 Elf_Internal_Shdr
* shndx_hdr
;
2271 Elf_External_Sym_Shndx
* shndx
;
2273 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2274 extsyms
= (Elf32_External_Sym
*) symtab_hdr
->contents
;
2276 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
2278 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2280 /* The deletion must stop at the next ALIGN reloc for an alignment
2281 power larger than the number of bytes we are deleting. */
2283 /* Actually delete the bytes. */
2284 #if (DEBUG_RELAX & 2)
2285 fprintf (stderr
, "relax_delete: contents: sec: %s %p .. %p %x\n",
2286 sec
->name
, addr
, toaddr
, count
);
2288 memmove (contents
+ addr
, contents
+ addr
+ count
,
2289 toaddr
- addr
- count
);
2290 memset (contents
+ toaddr
-count
, 0, count
);
2292 /* Adjust all the relocs. */
2293 irel
= elf_section_data (sec
)->relocs
;
2294 irelend
= irel
+ sec
->reloc_count
;
2295 shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
2296 shndx
= (Elf_External_Sym_Shndx
*) shndx_hdr
->contents
;
2298 for (; irel
< irelend
; irel
++)
2300 bfd_vma raddr
, paddr
, symval
;
2301 Elf_Internal_Sym isym
;
2303 /* Get the new reloc address. */
2304 raddr
= irel
->r_offset
;
2305 if ((raddr
>= (addr
+ count
) && raddr
< toaddr
))
2306 irel
->r_offset
-= count
;
2308 if (raddr
>= addr
&& raddr
< addr
+ count
)
2310 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
2315 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_ALIGN
)
2318 bfd_elf32_swap_symbol_in (abfd
,
2319 extsyms
+ ELF32_R_SYM (irel
->r_info
),
2320 shndx
? shndx
+ ELF32_R_SYM (irel
->r_info
) : NULL
,
2323 if (isym
.st_shndx
!= sec_shndx
)
2326 /* Get the value of the symbol referred to by the reloc. */
2327 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
2329 symval
= isym
.st_value
;
2330 #if (DEBUG_RELAX & 2)
2332 char * name
= bfd_elf_string_from_elf_section
2333 (abfd
, symtab_hdr
->sh_link
, isym
.st_name
);
2335 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2336 sec
->name
, name
, isym
.st_name
,
2337 sec
->output_section
->vma
, sec
->output_offset
,
2338 isym
.st_value
, irel
->r_addend
);
2345 struct elf_link_hash_entry
* h
;
2347 /* An external symbol. */
2348 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2350 h
= elf_sym_hashes (abfd
) [indx
];
2351 BFD_ASSERT (h
!= NULL
);
2353 symval
= h
->root
.u
.def
.value
;
2354 #if (DEBUG_RELAX & 2)
2356 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2357 sec
->name
, h
->root
.root
.string
, h
->root
.u
.def
.value
,
2358 sec
->output_section
->vma
, sec
->output_offset
, irel
->r_addend
);
2362 paddr
= symval
+ irel
->r_addend
;
2364 if ( (symval
>= addr
+ count
&& symval
< toaddr
)
2365 && (paddr
< addr
+ count
|| paddr
>= toaddr
))
2366 irel
->r_addend
+= count
;
2367 else if ( (symval
< addr
+ count
|| symval
>= toaddr
)
2368 && (paddr
>= addr
+ count
&& paddr
< toaddr
))
2369 irel
->r_addend
-= count
;
2372 /* Adjust the local symbols defined in this section. */
2374 esymend
= esym
+ symtab_hdr
->sh_info
;
2376 for (; esym
< esymend
; esym
++, shndx
= (shndx
? shndx
+ 1 : NULL
))
2378 Elf_Internal_Sym isym
;
2380 bfd_elf32_swap_symbol_in (abfd
, esym
, shndx
, & isym
);
2382 if (isym
.st_shndx
== sec_shndx
2383 && isym
.st_value
>= addr
+ count
2384 && isym
.st_value
< toaddr
)
2386 isym
.st_value
-= count
;
2388 if (isym
.st_value
+ isym
.st_size
>= toaddr
)
2389 isym
.st_size
+= count
;
2391 bfd_elf32_swap_symbol_out (abfd
, & isym
, shndx
, esym
);
2393 else if (isym
.st_shndx
== sec_shndx
2394 && isym
.st_value
< addr
+ count
)
2396 if (isym
.st_value
+isym
.st_size
>= addr
+ count
2397 && isym
.st_value
+isym
.st_size
< toaddr
)
2398 isym
.st_size
-= count
;
2400 if (isym
.st_value
>= addr
2401 && isym
.st_value
< addr
+ count
)
2402 isym
.st_value
= addr
;
2404 bfd_elf32_swap_symbol_out (abfd
, & isym
, shndx
, esym
);
2408 /* Now adjust the global symbols defined in this section. */
2409 esym
= extsyms
+ symtab_hdr
->sh_info
;
2410 esymend
= extsyms
+ (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
));
2412 for (index
= 0; esym
< esymend
; esym
++, index
++)
2414 Elf_Internal_Sym isym
;
2416 bfd_elf32_swap_symbol_in (abfd
, esym
, shndx
, & isym
);
2417 sym_hash
= elf_sym_hashes (abfd
) [index
];
2419 if (isym
.st_shndx
== sec_shndx
2420 && ((sym_hash
)->root
.type
== bfd_link_hash_defined
2421 || (sym_hash
)->root
.type
== bfd_link_hash_defweak
)
2422 && (sym_hash
)->root
.u
.def
.section
== sec
2423 && (sym_hash
)->root
.u
.def
.value
>= addr
+ count
2424 && (sym_hash
)->root
.u
.def
.value
< toaddr
)
2426 if ((sym_hash
)->root
.u
.def
.value
+ isym
.st_size
>= toaddr
)
2428 isym
.st_size
+= count
;
2429 bfd_elf32_swap_symbol_out (abfd
, & isym
, shndx
, esym
);
2432 (sym_hash
)->root
.u
.def
.value
-= count
;
2434 else if (isym
.st_shndx
== sec_shndx
2435 && ((sym_hash
)->root
.type
== bfd_link_hash_defined
2436 || (sym_hash
)->root
.type
== bfd_link_hash_defweak
)
2437 && (sym_hash
)->root
.u
.def
.section
== sec
2438 && (sym_hash
)->root
.u
.def
.value
< addr
+ count
)
2440 if ((sym_hash
)->root
.u
.def
.value
+isym
.st_size
>= addr
+ count
2441 && (sym_hash
)->root
.u
.def
.value
+isym
.st_size
< toaddr
)
2442 isym
.st_size
-= count
;
2444 if ((sym_hash
)->root
.u
.def
.value
>= addr
2445 && (sym_hash
)->root
.u
.def
.value
< addr
+ count
)
2446 (sym_hash
)->root
.u
.def
.value
= addr
;
2448 bfd_elf32_swap_symbol_out (abfd
, & isym
, shndx
, esym
);
2458 #define NOP_OPCODE (0x0000)
2459 #define MOVHI 0x0640 /* 4byte */
2460 #define MOVHI_MASK 0x07e0
2461 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2462 #define MOVHI_R2(insn) ((insn) >> 11)
2463 #define MOVEA 0x0620 /* 2byte */
2464 #define MOVEA_MASK 0x07e0
2465 #define MOVEA_R1(insn) ((insn) & 0x1f)
2466 #define MOVEA_R2(insn) ((insn) >> 11)
2467 #define JARL_4 0x00040780 /* 4byte */
2468 #define JARL_4_MASK 0xFFFF07FF
2469 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2470 #define ADD_I 0x0240 /* 2byte */
2471 #define ADD_I_MASK 0x07e0
2472 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2473 #define ADD_R2(insn) ((insn) >> 11)
2474 #define JMP_R 0x0060 /* 2byte */
2475 #define JMP_R_MASK 0xFFE0
2476 #define JMP_R1(insn) ((insn) & 0x1f)
2479 v850_elf_relax_section (abfd
, sec
, link_info
, again
)
2482 struct bfd_link_info
* link_info
;
2485 Elf_Internal_Shdr
* symtab_hdr
;
2486 Elf_Internal_Rela
* internal_relocs
;
2487 Elf_Internal_Rela
* irel
;
2488 Elf_Internal_Rela
* irelend
;
2489 Elf_Internal_Rela
* irelalign
= NULL
;
2490 Elf_Internal_Sym
* isymbuf
= NULL
;
2491 bfd_byte
* contents
= NULL
;
2494 int align_pad_size
= 0;
2495 boolean result
= true;
2499 if (link_info
->relocateable
2500 || (sec
->flags
& SEC_RELOC
) == 0
2501 || sec
->reloc_count
== 0)
2504 /* If this is the first time we have been called
2505 for this section, initialize the cooked size. */
2506 if (sec
->_cooked_size
== 0)
2507 sec
->_cooked_size
= sec
->_raw_size
;
2509 symtab_hdr
= & elf_tdata (abfd
)->symtab_hdr
;
2511 internal_relocs
= (_bfd_elf32_link_read_relocs
2512 (abfd
, sec
, (PTR
) NULL
, (Elf_Internal_Rela
*) NULL
,
2513 link_info
->keep_memory
));
2514 if (internal_relocs
== NULL
)
2517 irelend
= internal_relocs
+ sec
->reloc_count
;
2519 while (addr
< sec
->_cooked_size
)
2521 toaddr
= sec
->_cooked_size
;
2523 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
2524 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_ALIGN
2525 && irel
->r_offset
> addr
2526 && irel
->r_offset
< toaddr
)
2527 toaddr
= irel
->r_offset
;
2530 fprintf (stderr
, "relax region 0x%x to 0x%x align pad %d\n",
2531 addr
, toaddr
, align_pad_size
);
2536 bfd_vma alignmoveto
;
2538 alignmoveto
= BFD_ALIGN (addr
- align_pad_size
, 1 << irelalign
->r_addend
);
2539 alignto
= BFD_ALIGN (addr
, 1 << irelalign
->r_addend
);
2541 if (alignmoveto
< alignto
)
2545 align_pad_size
= alignto
- alignmoveto
;
2547 fprintf (stderr
, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2548 alignmoveto
, toaddr
, align_pad_size
);
2550 if (!v850_elf_relax_delete_bytes (abfd
, sec
, alignmoveto
,
2551 toaddr
, align_pad_size
))
2554 for (i
= BFD_ALIGN (toaddr
- align_pad_size
, 1);
2555 (i
+ 1) < toaddr
; i
+= 2)
2556 bfd_put_16 (abfd
, NOP_OPCODE
, contents
+ i
);
2564 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
2571 Elf_Internal_Rela
* hi_irelfn
;
2572 Elf_Internal_Rela
* lo_irelfn
;
2573 Elf_Internal_Rela
* irelcall
;
2574 bfd_signed_vma foff
;
2576 if (! (irel
->r_offset
>= addr
&& irel
->r_offset
< toaddr
2577 && (ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_LONGCALL
2578 || ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_LONGJUMP
)))
2582 fprintf (stderr
, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2588 /* Get the section contents. */
2589 if (contents
== NULL
)
2591 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
2592 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2595 contents
= (bfd_byte
*) bfd_malloc (sec
->_raw_size
);
2596 if (contents
== NULL
)
2599 if (! bfd_get_section_contents (abfd
, sec
, contents
,
2600 (file_ptr
) 0, sec
->_raw_size
))
2605 /* Read this BFD's local symbols if we haven't done so already. */
2606 if (isymbuf
== NULL
&& symtab_hdr
->sh_info
!= 0)
2608 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2609 if (isymbuf
== NULL
)
2610 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
2611 symtab_hdr
->sh_info
, 0,
2613 if (isymbuf
== NULL
)
2617 laddr
= irel
->r_offset
;
2619 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_LONGCALL
)
2621 /* Check code for -mlong-calls output. */
2622 if (laddr
+ 16 <= (bfd_vma
) sec
->_raw_size
)
2624 insn
[0] = bfd_get_16 (abfd
, contents
+ laddr
);
2625 insn
[1] = bfd_get_16 (abfd
, contents
+ laddr
+ 4);
2626 insn
[2] = bfd_get_32 (abfd
, contents
+ laddr
+ 8);
2627 insn
[3] = bfd_get_16 (abfd
, contents
+ laddr
+ 12);
2628 insn
[4] = bfd_get_16 (abfd
, contents
+ laddr
+ 14);
2630 if ((insn
[0] & MOVHI_MASK
) != MOVHI
2631 || MOVHI_R1 (insn
[0]) != 0)
2635 && ((insn
[1] & MOVEA_MASK
) != MOVEA
2636 || MOVHI_R2 (insn
[0]) != MOVEA_R1 (insn
[1])))
2640 && (insn
[2] & JARL_4_MASK
) != JARL_4
)
2644 && ((insn
[3] & ADD_I_MASK
) != ADD_I
2645 || ADD_I5 (insn
[3]) != 4
2646 || JARL_R2 (insn
[2]) != ADD_R2 (insn
[3])))
2650 && ((insn
[4] & JMP_R_MASK
) != JMP_R
2651 || MOVEA_R2 (insn
[1]) != JMP_R1 (insn
[4])))
2656 ((*_bfd_error_handler
)
2657 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2658 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
));
2665 ((*_bfd_error_handler
)
2666 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2667 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
+no_match
, insn
[no_match
]));
2672 /* Get the reloc for the address from which the register is
2673 being loaded. This reloc will tell us which function is
2674 actually being called. */
2675 for (hi_irelfn
= internal_relocs
; hi_irelfn
< irelend
; hi_irelfn
++)
2676 if (hi_irelfn
->r_offset
== laddr
+ 2
2677 && ELF32_R_TYPE (hi_irelfn
->r_info
)
2678 == (int) R_V850_HI16_S
)
2681 for (lo_irelfn
= internal_relocs
; lo_irelfn
< irelend
; lo_irelfn
++)
2682 if (lo_irelfn
->r_offset
== laddr
+ 6
2683 && ELF32_R_TYPE (lo_irelfn
->r_info
)
2684 == (int) R_V850_LO16
)
2687 for (irelcall
= internal_relocs
; irelcall
< irelend
; irelcall
++)
2688 if (irelcall
->r_offset
== laddr
+ 8
2689 && ELF32_R_TYPE (irelcall
->r_info
)
2690 == (int) R_V850_22_PCREL
)
2693 if ( hi_irelfn
== irelend
2694 || lo_irelfn
== irelend
2695 || irelcall
== irelend
)
2697 ((*_bfd_error_handler
)
2698 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2699 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
));
2704 if (ELF32_R_SYM (irelcall
->r_info
) < symtab_hdr
->sh_info
)
2706 Elf_Internal_Sym
* isym
;
2708 /* A local symbol. */
2709 isym
= isymbuf
+ ELF32_R_SYM (irelcall
->r_info
);
2711 symval
= isym
->st_value
;
2716 struct elf_link_hash_entry
* h
;
2718 /* An external symbol. */
2719 indx
= ELF32_R_SYM (irelcall
->r_info
) - symtab_hdr
->sh_info
;
2720 h
= elf_sym_hashes (abfd
)[indx
];
2721 BFD_ASSERT (h
!= NULL
);
2723 if ( h
->root
.type
!= bfd_link_hash_defined
2724 && h
->root
.type
!= bfd_link_hash_defweak
)
2725 /* This appears to be a reference to an undefined
2726 symbol. Just ignore it--it will be caught by the
2727 regular reloc processing. */
2730 symval
= h
->root
.u
.def
.value
;
2733 if (symval
+ irelcall
->r_addend
!= irelcall
->r_offset
+ 4)
2735 ((*_bfd_error_handler
)
2736 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2737 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
, irelcall
->r_offset
));
2742 /* Get the value of the symbol referred to by the reloc. */
2743 if (ELF32_R_SYM (hi_irelfn
->r_info
) < symtab_hdr
->sh_info
)
2745 Elf_Internal_Sym
* isym
;
2748 /* A local symbol. */
2749 isym
= isymbuf
+ ELF32_R_SYM (hi_irelfn
->r_info
);
2751 if (isym
->st_shndx
== SHN_UNDEF
)
2752 sym_sec
= bfd_und_section_ptr
;
2753 else if (isym
->st_shndx
== SHN_ABS
)
2754 sym_sec
= bfd_abs_section_ptr
;
2755 else if (isym
->st_shndx
== SHN_COMMON
)
2756 sym_sec
= bfd_com_section_ptr
;
2758 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2759 symval
= (isym
->st_value
2760 + sym_sec
->output_section
->vma
2761 + sym_sec
->output_offset
);
2766 struct elf_link_hash_entry
* h
;
2768 /* An external symbol. */
2769 indx
= ELF32_R_SYM (hi_irelfn
->r_info
) - symtab_hdr
->sh_info
;
2770 h
= elf_sym_hashes (abfd
)[indx
];
2771 BFD_ASSERT (h
!= NULL
);
2773 if ( h
->root
.type
!= bfd_link_hash_defined
2774 && h
->root
.type
!= bfd_link_hash_defweak
)
2775 /* This appears to be a reference to an undefined
2776 symbol. Just ignore it--it will be caught by the
2777 regular reloc processing. */
2780 symval
= (h
->root
.u
.def
.value
2781 + h
->root
.u
.def
.section
->output_section
->vma
2782 + h
->root
.u
.def
.section
->output_offset
);
2785 addend
= irel
->r_addend
;
2787 foff
= (symval
+ addend
2789 + sec
->output_section
->vma
2790 + sec
->output_offset
2793 fprintf (stderr
, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2796 + sec
->output_section
->vma
2797 + sec
->output_offset
),
2798 symval
, addend
, foff
);
2801 if (foff
< -0x100000 || foff
>= 0x100000)
2802 /* After all that work, we can't shorten this function call. */
2805 /* For simplicity of coding, we are going to modify the section
2806 contents, the section relocs, and the BFD symbol table. We
2807 must tell the rest of the code not to free up this
2808 information. It would be possible to instead create a table
2809 of changes which have to be made, as is done in coff-mips.c;
2810 that would be more work, but would require less memory when
2811 the linker is run. */
2812 elf_section_data (sec
)->relocs
= internal_relocs
;
2813 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2814 symtab_hdr
->contents
= (bfd_byte
*) isymbuf
;
2816 /* Replace the long call with a jarl. */
2817 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_V850_22_PCREL
);
2821 if (ELF32_R_SYM (hi_irelfn
->r_info
) < symtab_hdr
->sh_info
)
2822 /* If this needs to be changed because of future relaxing,
2823 it will be handled here like other internal IND12W
2826 0x00000780 | (JARL_R2 (insn
[2])<<11) | ((addend
<< 16) & 0xffff) | ((addend
>> 16) & 0xf),
2827 contents
+ irel
->r_offset
);
2829 /* We can't fully resolve this yet, because the external
2830 symbol value may be changed by future relaxing.
2831 We let the final link phase handle it. */
2832 bfd_put_32 (abfd
, 0x00000780 | (JARL_R2 (insn
[2])<<11),
2833 contents
+ irel
->r_offset
);
2836 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_V850_NONE
);
2838 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_V850_NONE
);
2840 ELF32_R_INFO (ELF32_R_SYM (irelcall
->r_info
), R_V850_NONE
);
2842 if (! v850_elf_relax_delete_bytes (abfd
, sec
,
2843 irel
->r_offset
+ 4, toaddr
, 12))
2846 align_pad_size
+= 12;
2848 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_LONGJUMP
)
2850 /* Check code for -mlong-jumps output. */
2851 if (laddr
+ 10 <= (bfd_vma
) sec
->_raw_size
)
2853 insn
[0] = bfd_get_16 (abfd
, contents
+ laddr
);
2854 insn
[1] = bfd_get_16 (abfd
, contents
+ laddr
+ 4);
2855 insn
[2] = bfd_get_16 (abfd
, contents
+ laddr
+ 8);
2857 if ((insn
[0] & MOVHI_MASK
) != MOVHI
2858 || MOVHI_R1 (insn
[0]) != 0)
2862 && ((insn
[1] & MOVEA_MASK
) != MOVEA
2863 || MOVHI_R2 (insn
[0]) != MOVEA_R1 (insn
[1])))
2867 && ((insn
[2] & JMP_R_MASK
) != JMP_R
2868 || MOVEA_R2 (insn
[1]) != JMP_R1 (insn
[2])))
2873 ((*_bfd_error_handler
)
2874 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2875 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
));
2882 ((*_bfd_error_handler
)
2883 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2884 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
+no_match
, insn
[no_match
]));
2889 /* Get the reloc for the address from which the register is
2890 being loaded. This reloc will tell us which function is
2891 actually being called. */
2892 for (hi_irelfn
= internal_relocs
; hi_irelfn
< irelend
; hi_irelfn
++)
2893 if (hi_irelfn
->r_offset
== laddr
+ 2
2894 && ELF32_R_TYPE (hi_irelfn
->r_info
) == (int) R_V850_HI16_S
)
2897 for (lo_irelfn
= internal_relocs
; lo_irelfn
< irelend
; lo_irelfn
++)
2898 if (lo_irelfn
->r_offset
== laddr
+ 6
2899 && ELF32_R_TYPE (lo_irelfn
->r_info
) == (int) R_V850_LO16
)
2902 if ( hi_irelfn
== irelend
2903 || lo_irelfn
== irelend
)
2905 ((*_bfd_error_handler
)
2906 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2907 bfd_get_filename (abfd
), (unsigned long) irel
->r_offset
));
2912 /* Get the value of the symbol referred to by the reloc. */
2913 if (ELF32_R_SYM (hi_irelfn
->r_info
) < symtab_hdr
->sh_info
)
2915 Elf_Internal_Sym
* isym
;
2918 /* A local symbol. */
2919 isym
= isymbuf
+ ELF32_R_SYM (hi_irelfn
->r_info
);
2921 if (isym
->st_shndx
== SHN_UNDEF
)
2922 sym_sec
= bfd_und_section_ptr
;
2923 else if (isym
->st_shndx
== SHN_ABS
)
2924 sym_sec
= bfd_abs_section_ptr
;
2925 else if (isym
->st_shndx
== SHN_COMMON
)
2926 sym_sec
= bfd_com_section_ptr
;
2928 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2929 symval
= (isym
->st_value
2930 + sym_sec
->output_section
->vma
2931 + sym_sec
->output_offset
);
2934 char * name
= bfd_elf_string_from_elf_section
2935 (abfd
, symtab_hdr
->sh_link
, isym
->st_name
);
2937 fprintf (stderr
, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2938 sym_sec
->name
, name
, isym
->st_name
,
2939 sym_sec
->output_section
->vma
,
2940 sym_sec
->output_offset
,
2941 isym
->st_value
, irel
->r_addend
);
2948 struct elf_link_hash_entry
* h
;
2950 /* An external symbol. */
2951 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2952 h
= elf_sym_hashes (abfd
)[indx
];
2953 BFD_ASSERT (h
!= NULL
);
2955 if ( h
->root
.type
!= bfd_link_hash_defined
2956 && h
->root
.type
!= bfd_link_hash_defweak
)
2957 /* This appears to be a reference to an undefined
2958 symbol. Just ignore it--it will be caught by the
2959 regular reloc processing. */
2962 symval
= (h
->root
.u
.def
.value
2963 + h
->root
.u
.def
.section
->output_section
->vma
2964 + h
->root
.u
.def
.section
->output_offset
);
2967 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2968 sec
->name
, h
->root
.root
.string
, h
->root
.u
.def
.value
,
2969 sec
->output_section
->vma
, sec
->output_offset
, irel
->r_addend
);
2973 addend
= irel
->r_addend
;
2975 foff
= (symval
+ addend
2977 + sec
->output_section
->vma
2978 + sec
->output_offset
2981 fprintf (stderr
, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2984 + sec
->output_section
->vma
2985 + sec
->output_offset
),
2986 symval
, addend
, foff
);
2988 if (foff
< -0x100000 || foff
>= 0x100000)
2989 /* After all that work, we can't shorten this function call. */
2992 /* For simplicity of coding, we are going to modify the section
2993 contents, the section relocs, and the BFD symbol table. We
2994 must tell the rest of the code not to free up this
2995 information. It would be possible to instead create a table
2996 of changes which have to be made, as is done in coff-mips.c;
2997 that would be more work, but would require less memory when
2998 the linker is run. */
2999 elf_section_data (sec
)->relocs
= internal_relocs
;
3000 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3001 symtab_hdr
->contents
= (bfd_byte
*) isymbuf
;
3003 if (foff
< -0x100 || foff
>= 0x100)
3005 /* Replace the long jump with a jr. */
3008 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_V850_22_PCREL
);
3010 irel
->r_addend
= addend
;
3013 if (ELF32_R_SYM (hi_irelfn
->r_info
) < symtab_hdr
->sh_info
)
3014 /* If this needs to be changed because of future relaxing,
3015 it will be handled here like other internal IND12W
3018 0x00000780 | ((addend
<< 15) & 0xffff0000) | ((addend
>> 17) & 0xf),
3019 contents
+ irel
->r_offset
);
3021 /* We can't fully resolve this yet, because the external
3022 symbol value may be changed by future relaxing.
3023 We let the final link phase handle it. */
3024 bfd_put_32 (abfd
, 0x00000780, contents
+ irel
->r_offset
);
3027 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_V850_NONE
);
3029 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_V850_NONE
);
3030 if (!v850_elf_relax_delete_bytes (abfd
, sec
,
3031 irel
->r_offset
+ 4, toaddr
, 6))
3034 align_pad_size
+= 6;
3038 /* Replace the long jump with a br. */
3041 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_V850_9_PCREL
);
3043 irel
->r_addend
= addend
;
3046 if (ELF32_R_SYM (hi_irelfn
->r_info
) < symtab_hdr
->sh_info
)
3047 /* If this needs to be changed because of future relaxing,
3048 it will be handled here like other internal IND12W
3051 0x0585 | ((addend
<< 10) & 0xf800) | ((addend
<< 3) & 0x0070),
3052 contents
+ irel
->r_offset
);
3054 /* We can't fully resolve this yet, because the external
3055 symbol value may be changed by future relaxing.
3056 We let the final link phase handle it. */
3057 bfd_put_16 (abfd
, 0x0585, contents
+ irel
->r_offset
);
3060 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_V850_NONE
);
3062 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_V850_NONE
);
3063 if (!v850_elf_relax_delete_bytes (abfd
, sec
,
3064 irel
->r_offset
+ 2, toaddr
, 8))
3067 align_pad_size
+= 8;
3073 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3075 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_V850_ALIGN
3076 && irel
->r_offset
== toaddr
)
3078 irel
->r_offset
-= align_pad_size
;
3080 if (irelalign
== NULL
|| irelalign
->r_addend
> irel
->r_addend
)
3091 fprintf (stderr
, "relax pad %d shorten %d -> %d\n",
3094 sec
->_cooked_size
- align_pad_size
);
3096 sec
->_cooked_size
-= align_pad_size
;
3100 if (internal_relocs
!= NULL
3101 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3102 free (internal_relocs
);
3104 if (contents
!= NULL
3105 && elf_section_data (sec
)->this_hdr
.contents
!= (unsigned char *) contents
)
3109 && symtab_hdr
->contents
!= (bfd_byte
*) isymbuf
)
3119 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3120 #define TARGET_LITTLE_NAME "elf32-v850"
3121 #define ELF_ARCH bfd_arch_v850
3122 #define ELF_MACHINE_CODE EM_V850
3123 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3124 #define ELF_MAXPAGESIZE 0x1000
3126 #define elf_info_to_howto v850_elf_info_to_howto_rela
3127 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3129 #define elf_backend_check_relocs v850_elf_check_relocs
3130 #define elf_backend_relocate_section v850_elf_relocate_section
3131 #define elf_backend_object_p v850_elf_object_p
3132 #define elf_backend_final_write_processing v850_elf_final_write_processing
3133 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3134 #define elf_backend_symbol_processing v850_elf_symbol_processing
3135 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3136 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3137 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3138 #define elf_backend_fake_sections v850_elf_fake_sections
3139 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3140 #define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
3142 #define elf_backend_can_gc_sections 1
3143 #define elf_backend_rela_normal 1
3145 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3146 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3147 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3148 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3149 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3150 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3152 #define elf_symbol_leading_char '_'
3154 #include "elf32-target.h"