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2005-06-02 H.J. Lu <hjl@gnu.org>
[binutils.git] / bfd / coff-ppc.c
blob4f8b15e177e4ccc66b4bbb0ef8347638563a21b2
1 /* BFD back-end for PowerPC Microsoft Portable Executable files.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002
4 Free Software Foundation, Inc.
5
6 Original version pieced together by Kim Knuttila (krk@cygnus.com)
7
8 There is nothing new under the sun. This file draws a lot on other
9 coff files, in particular, those for the rs/6000, alpha, mips, and
10 intel backends, and the PE work for the arm.
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, 59 Temple Place - Suite 330,
27 Boston, MA 02111-1307, USA. */
28
29 /* Current State:
30 - objdump works
31 - relocs generated by gas
32 - ld will link files, but they do not run.
33 - dlltool will not produce correct output in some .reloc cases, and will
34 not produce the right glue code for dll function calls.
35 */
36
37 #include "bfd.h"
38 #include "sysdep.h"
39
40 #include "libbfd.h"
41
42 #include "coff/powerpc.h"
43 #include "coff/internal.h"
44
45 #include "coff/pe.h"
46
47 #ifdef BADMAG
48 #undef BADMAG
49 #endif
50
51 #define BADMAG(x) PPCBADMAG(x)
52
53 #include "libcoff.h"
54
55 /* This file is compiled more than once, but we only compile the
56 final_link routine once. */
57 extern boolean ppc_bfd_coff_final_link
58 PARAMS ((bfd *, struct bfd_link_info *));
59 extern void dump_toc PARAMS ((PTR));
60
61 /* The toc is a set of bfd_vma fields. We use the fact that valid */
62 /* addresses are even (i.e. the bit representing "1" is off) to allow */
63 /* us to encode a little extra information in the field */
64 /* - Unallocated addresses are intialized to 1. */
65 /* - Allocated addresses are even numbers. */
66 /* The first time we actually write a reference to the toc in the bfd, */
67 /* we want to record that fact in a fixup file (if it is asked for), so */
68 /* we keep track of whether or not an address has been written by marking */
69 /* the low order bit with a "1" upon writing */
70
71 #define SET_UNALLOCATED(x) ((x) = 1)
72 #define IS_UNALLOCATED(x) ((x) == 1)
73
74 #define IS_WRITTEN(x) ((x) & 1)
75 #define MARK_AS_WRITTEN(x) ((x) |= 1)
76 #define MAKE_ADDR_AGAIN(x) ((x) &= ~1)
77
78 /* Turn on this check if you suspect something amiss in the hash tables */
79 #ifdef DEBUG_HASH
80
81 /* Need a 7 char string for an eye catcher */
82 #define EYE "krkjunk"
83
84 #define HASH_CHECK_DCL char eye_catcher[8];
85 #define HASH_CHECK_INIT(ret) strcpy(ret->eye_catcher, EYE)
86 #define HASH_CHECK(addr) \
87 if (strcmp(addr->eye_catcher, EYE) != 0) \
88 { \
89 fprintf (stderr,\
90 _("File %s, line %d, Hash check failure, bad eye %8s\n"), \
91 __FILE__, __LINE__, addr->eye_catcher); \
92 abort (); \
93 }
94
95 #else
96
97 #define HASH_CHECK_DCL
98 #define HASH_CHECK_INIT(ret)
99 #define HASH_CHECK(addr)
100
101 #endif
102
103 /* In order not to add an int to every hash table item for every coff
104 linker, we define our own hash table, derived from the coff one */
105
106 /* PE linker hash table entries. */
107
108 struct ppc_coff_link_hash_entry
109 {
110 struct coff_link_hash_entry root; /* First entry, as required */
111
112 /* As we wonder around the relocs, we'll keep the assigned toc_offset
113 here */
114 bfd_vma toc_offset; /* Our addition, as required */
115 int symbol_is_glue;
116 unsigned long int glue_insn;
117
118 HASH_CHECK_DCL
119 };
120
121 /* PE linker hash table. */
122
123 struct ppc_coff_link_hash_table
124 {
125 struct coff_link_hash_table root; /* First entry, as required */
126 };
127
128 static struct bfd_hash_entry *ppc_coff_link_hash_newfunc
129 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
130 const char *));
131 static boolean ppc_coff_link_hash_table_init
132 PARAMS ((struct ppc_coff_link_hash_table *, bfd *,
133 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
134 struct bfd_hash_table *,
135 const char *)));
136 static struct bfd_link_hash_table *ppc_coff_link_hash_table_create
137 PARAMS ((bfd *));
138 static boolean coff_ppc_relocate_section
139 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
140 struct internal_reloc *, struct internal_syment *, asection **));
141 static reloc_howto_type *coff_ppc_rtype_to_howto
142 PARAMS ((bfd *, asection *, struct internal_reloc *,
143 struct coff_link_hash_entry *, struct internal_syment *,
144 bfd_vma *));
145
146 /* Routine to create an entry in the link hash table. */
147
148 static struct bfd_hash_entry *
149 ppc_coff_link_hash_newfunc (entry, table, string)
150 struct bfd_hash_entry *entry;
151 struct bfd_hash_table *table;
152 const char *string;
153 {
154 struct ppc_coff_link_hash_entry *ret =
155 (struct ppc_coff_link_hash_entry *) entry;
156
157 /* Allocate the structure if it has not already been allocated by a
158 subclass. */
159 if (ret == (struct ppc_coff_link_hash_entry *) NULL)
160 ret = (struct ppc_coff_link_hash_entry *)
161 bfd_hash_allocate (table,
162 sizeof (struct ppc_coff_link_hash_entry));
163
164 if (ret == (struct ppc_coff_link_hash_entry *) NULL)
165 return NULL;
166
167 /* Call the allocation method of the superclass. */
168 ret = ((struct ppc_coff_link_hash_entry *)
169 _bfd_coff_link_hash_newfunc ((struct bfd_hash_entry *) ret,
170 table, string));
171
172 if (ret)
173 {
174 /* Initialize the local fields. */
175 SET_UNALLOCATED(ret->toc_offset);
176 ret->symbol_is_glue = 0;
177 ret->glue_insn = 0;
178
179 HASH_CHECK_INIT(ret);
180 }
181
182 return (struct bfd_hash_entry *) ret;
183 }
184
185 /* Initialize a PE linker hash table. */
186
187 static boolean
188 ppc_coff_link_hash_table_init (table, abfd, newfunc)
189 struct ppc_coff_link_hash_table *table;
190 bfd *abfd;
191 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
192 struct bfd_hash_table *,
193 const char *));
194 {
195 return _bfd_coff_link_hash_table_init (&table->root, abfd, newfunc);
196 }
197
198 /* Create a PE linker hash table. */
199
200 static struct bfd_link_hash_table *
201 ppc_coff_link_hash_table_create (abfd)
202 bfd *abfd;
203 {
204 struct ppc_coff_link_hash_table *ret;
205 bfd_size_type amt = sizeof (struct ppc_coff_link_hash_table);
206
207 ret = (struct ppc_coff_link_hash_table *) bfd_malloc (amt);
208 if (ret == NULL)
209 return NULL;
210 if (! ppc_coff_link_hash_table_init (ret, abfd,
211 ppc_coff_link_hash_newfunc))
212 {
213 free (ret);
214 return (struct bfd_link_hash_table *) NULL;
215 }
216 return &ret->root.root;
217 }
218
219 /* Now, tailor coffcode.h to use our hash stuff */
220
221 #define coff_bfd_link_hash_table_create ppc_coff_link_hash_table_create
222 \f
223 /* The nt loader points the toc register to &toc + 32768, in order to */
224 /* use the complete range of a 16-bit displacement. We have to adjust */
225 /* for this when we fix up loads displaced off the toc reg. */
226 #define TOC_LOAD_ADJUSTMENT (-32768)
227 #define TOC_SECTION_NAME ".private.toc"
228
229 /* The main body of code is in coffcode.h. */
230
231 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
232
233 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
234 from smaller values. Start with zero, widen, *then* decrement. */
235 #define MINUS_ONE (((bfd_vma)0) - 1)
236
237 /* these should definitely go in a header file somewhere... */
238
239 /* NOP */
240 #define IMAGE_REL_PPC_ABSOLUTE 0x0000
241
242 /* 64-bit address */
243 #define IMAGE_REL_PPC_ADDR64 0x0001
244
245 /* 32-bit address */
246 #define IMAGE_REL_PPC_ADDR32 0x0002
247
248 /* 26-bit address, shifted left 2 (branch absolute) */
249 #define IMAGE_REL_PPC_ADDR24 0x0003
250
251 /* 16-bit address */
252 #define IMAGE_REL_PPC_ADDR16 0x0004
253
254 /* 16-bit address, shifted left 2 (load doubleword) */
255 #define IMAGE_REL_PPC_ADDR14 0x0005
256
257 /* 26-bit PC-relative offset, shifted left 2 (branch relative) */
258 #define IMAGE_REL_PPC_REL24 0x0006
259
260 /* 16-bit PC-relative offset, shifted left 2 (br cond relative) */
261 #define IMAGE_REL_PPC_REL14 0x0007
262
263 /* 16-bit offset from TOC base */
264 #define IMAGE_REL_PPC_TOCREL16 0x0008
265
266 /* 16-bit offset from TOC base, shifted left 2 (load doubleword) */
267 #define IMAGE_REL_PPC_TOCREL14 0x0009
268
269 /* 32-bit addr w/o image base */
270 #define IMAGE_REL_PPC_ADDR32NB 0x000A
271
272 /* va of containing section (as in an image sectionhdr) */
273 #define IMAGE_REL_PPC_SECREL 0x000B
274
275 /* sectionheader number */
276 #define IMAGE_REL_PPC_SECTION 0x000C
277
278 /* substitute TOC restore instruction iff symbol is glue code */
279 #define IMAGE_REL_PPC_IFGLUE 0x000D
280
281 /* symbol is glue code; virtual address is TOC restore instruction */
282 #define IMAGE_REL_PPC_IMGLUE 0x000E
283
284 /* va of containing section (limited to 16 bits) */
285 #define IMAGE_REL_PPC_SECREL16 0x000F
286
287 /* stuff to handle immediate data when the number of bits in the */
288 /* data is greater than the number of bits in the immediate field */
289 /* We need to do (usually) 32 bit arithmetic on 16 bit chunks */
290 #define IMAGE_REL_PPC_REFHI 0x0010
291 #define IMAGE_REL_PPC_REFLO 0x0011
292 #define IMAGE_REL_PPC_PAIR 0x0012
293
294 /* This is essentially the same as tocrel16, with TOCDEFN assumed */
295 #define IMAGE_REL_PPC_TOCREL16_DEFN 0x0013
296
297 /* Flag bits in IMAGE_RELOCATION.TYPE */
298
299 /* subtract reloc value rather than adding it */
300 #define IMAGE_REL_PPC_NEG 0x0100
301
302 /* fix branch prediction bit to predict branch taken */
303 #define IMAGE_REL_PPC_BRTAKEN 0x0200
304
305 /* fix branch prediction bit to predict branch not taken */
306 #define IMAGE_REL_PPC_BRNTAKEN 0x0400
307
308 /* toc slot defined in file (or, data in toc) */
309 #define IMAGE_REL_PPC_TOCDEFN 0x0800
310
311 /* masks to isolate above values in IMAGE_RELOCATION.Type */
312 #define IMAGE_REL_PPC_TYPEMASK 0x00FF
313 #define IMAGE_REL_PPC_FLAGMASK 0x0F00
314
315 #define EXTRACT_TYPE(x) ((x) & IMAGE_REL_PPC_TYPEMASK)
316 #define EXTRACT_FLAGS(x) ((x) & IMAGE_REL_PPC_FLAGMASK)
317 #define EXTRACT_JUNK(x) \
318 ((x) & ~(IMAGE_REL_PPC_TYPEMASK | IMAGE_REL_PPC_FLAGMASK))
319 \f
320 /* static helper functions to make relocation work */
321 /* (Work In Progress) */
322
323 static bfd_reloc_status_type ppc_refhi_reloc PARAMS ((bfd *abfd,
324 arelent *reloc,
325 asymbol *symbol,
326 PTR data,
327 asection *section,
328 bfd *output_bfd,
329 char **error));
330 #if 0
331 static bfd_reloc_status_type ppc_reflo_reloc PARAMS ((bfd *abfd,
332 arelent *reloc,
333 asymbol *symbol,
334 PTR data,
335 asection *section,
336 bfd *output_bfd,
337 char **error));
338 #endif
339 static bfd_reloc_status_type ppc_pair_reloc PARAMS ((bfd *abfd,
340 arelent *reloc,
341 asymbol *symbol,
342 PTR data,
343 asection *section,
344 bfd *output_bfd,
345 char **error));
346 \f
347 static bfd_reloc_status_type ppc_toc16_reloc PARAMS ((bfd *abfd,
348 arelent *reloc,
349 asymbol *symbol,
350 PTR data,
351 asection *section,
352 bfd *output_bfd,
353 char **error));
354
355 #if 0
356 static bfd_reloc_status_type ppc_addr32nb_reloc PARAMS ((bfd *abfd,
357 arelent *reloc,
358 asymbol *symbol,
359 PTR data,
360 asection *section,
361 bfd *output_bfd,
362 char **error));
363 #endif
364 static bfd_reloc_status_type ppc_section_reloc PARAMS ((bfd *abfd,
365 arelent *reloc,
366 asymbol *symbol,
367 PTR data,
368 asection *section,
369 bfd *output_bfd,
370 char **error));
371
372 static bfd_reloc_status_type ppc_secrel_reloc PARAMS ((bfd *abfd,
373 arelent *reloc,
374 asymbol *symbol,
375 PTR data,
376 asection *section,
377 bfd *output_bfd,
378 char **error));
379
380 static bfd_reloc_status_type ppc_imglue_reloc PARAMS ((bfd *abfd,
381 arelent *reloc,
382 asymbol *symbol,
383 PTR data,
384 asection *section,
385 bfd *output_bfd,
386 char **error));
387
388 static boolean in_reloc_p PARAMS((bfd *abfd, reloc_howto_type *howto));
389 \f
390 /* FIXME: It'll take a while to get through all of these. I only need a few to
391 get us started, so those I'll make sure work. Those marked FIXME are either
392 completely unverified or have a specific unknown marked in the comment */
393
394 /*---------------------------------------------------------------------------*/
395 /* */
396 /* Relocation entries for Windows/NT on PowerPC. */
397 /* */
398 /* From the document "" we find the following listed as used relocs: */
399 /* */
400 /* ABSOLUTE : The noop */
401 /* ADDR[64|32|16] : fields that hold addresses in data fields or the */
402 /* 16 bit displacement field on a load/store. */
403 /* ADDR[24|14] : fields that hold addresses in branch and cond */
404 /* branches. These represent [26|16] bit addresses. */
405 /* The low order 2 bits are preserved. */
406 /* REL[24|14] : branches relative to the Instruction Address */
407 /* register. These represent [26|16] bit addresses, */
408 /* as before. The instruction field will be zero, and */
409 /* the address of the SYM will be inserted at link time. */
410 /* TOCREL16 : 16 bit displacement field referring to a slot in */
411 /* toc. */
412 /* TOCREL14 : 16 bit displacement field, similar to REL14 or ADDR14. */
413 /* ADDR32NB : 32 bit address relative to the virtual origin. */
414 /* (On the alpha, this is always a linker generated thunk)*/
415 /* (i.e. 32bit addr relative to the image base) */
416 /* SECREL : The value is relative to the start of the section */
417 /* containing the symbol. */
418 /* SECTION : access to the header containing the item. Supports the */
419 /* codeview debugger. */
420 /* */
421 /* In particular, note that the document does not indicate that the */
422 /* relocations listed in the header file are used. */
423 /* */
424 /* */
425 /* */
426 /*---------------------------------------------------------------------------*/
427
428 static reloc_howto_type ppc_coff_howto_table[] =
429 {
430 /* IMAGE_REL_PPC_ABSOLUTE 0x0000 NOP */
431 /* Unused: */
432 HOWTO (IMAGE_REL_PPC_ABSOLUTE, /* type */
433 0, /* rightshift */
434 0, /* size (0 = byte, 1 = short, 2 = long) */
435 0, /* bitsize */
436 false, /* pc_relative */
437 0, /* bitpos */
438 complain_overflow_dont, /* dont complain_on_overflow */
439 0, /* special_function */
440 "ABSOLUTE", /* name */
441 false, /* partial_inplace */
442 0x00, /* src_mask */
443 0x00, /* dst_mask */
444 false), /* pcrel_offset */
445
446 /* IMAGE_REL_PPC_ADDR64 0x0001 64-bit address */
447 /* Unused: */
448 HOWTO(IMAGE_REL_PPC_ADDR64, /* type */
449 0, /* rightshift */
450 3, /* size (0 = byte, 1 = short, 2 = long) */
451 64, /* bitsize */
452 false, /* pc_relative */
453 0, /* bitpos */
454 complain_overflow_bitfield, /* complain_on_overflow */
455 0, /* special_function */
456 "ADDR64", /* name */
457 true, /* partial_inplace */
458 MINUS_ONE, /* src_mask */
459 MINUS_ONE, /* dst_mask */
460 false), /* pcrel_offset */
461
462 /* IMAGE_REL_PPC_ADDR32 0x0002 32-bit address */
463 /* Used: */
464 HOWTO (IMAGE_REL_PPC_ADDR32, /* type */
465 0, /* rightshift */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
467 32, /* bitsize */
468 false, /* pc_relative */
469 0, /* bitpos */
470 complain_overflow_bitfield, /* complain_on_overflow */
471 0, /* special_function */
472 "ADDR32", /* name */
473 true, /* partial_inplace */
474 0xffffffff, /* src_mask */
475 0xffffffff, /* dst_mask */
476 false), /* pcrel_offset */
477
478 /* IMAGE_REL_PPC_ADDR24 0x0003 26-bit address, shifted left 2 (branch absolute) */
479 /* the LI field is in bit 6 through bit 29 is 24 bits, + 2 for the shift */
480 /* Of course, That's the IBM approved bit numbering, which is not what */
481 /* anyone else uses.... The li field is in bit 2 thru 25 */
482 /* Used: */
483 HOWTO (IMAGE_REL_PPC_ADDR24, /* type */
484 0, /* rightshift */
485 2, /* size (0 = byte, 1 = short, 2 = long) */
486 26, /* bitsize */
487 false, /* pc_relative */
488 0, /* bitpos */
489 complain_overflow_bitfield, /* complain_on_overflow */
490 0, /* special_function */
491 "ADDR24", /* name */
492 true, /* partial_inplace */
493 0x07fffffc, /* src_mask */
494 0x07fffffc, /* dst_mask */
495 false), /* pcrel_offset */
496
497 /* IMAGE_REL_PPC_ADDR16 0x0004 16-bit address */
498 /* Used: */
499 HOWTO (IMAGE_REL_PPC_ADDR16, /* type */
500 0, /* rightshift */
501 1, /* size (0 = byte, 1 = short, 2 = long) */
502 16, /* bitsize */
503 false, /* pc_relative */
504 0, /* bitpos */
505 complain_overflow_signed, /* complain_on_overflow */
506 0, /* special_function */
507 "ADDR16", /* name */
508 true, /* partial_inplace */
509 0xffff, /* src_mask */
510 0xffff, /* dst_mask */
511 false), /* pcrel_offset */
512
513 /* IMAGE_REL_PPC_ADDR14 0x0005 */
514 /* 16-bit address, shifted left 2 (load doubleword) */
515 /* FIXME: the mask is likely wrong, and the bit position may be as well */
516 /* Unused: */
517 HOWTO (IMAGE_REL_PPC_ADDR14, /* type */
518 1, /* rightshift */
519 1, /* size (0 = byte, 1 = short, 2 = long) */
520 16, /* bitsize */
521 false, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_signed, /* complain_on_overflow */
524 0, /* special_function */
525 "ADDR16", /* name */
526 true, /* partial_inplace */
527 0xffff, /* src_mask */
528 0xffff, /* dst_mask */
529 false), /* pcrel_offset */
530
531 /* IMAGE_REL_PPC_REL24 0x0006 */
532 /* 26-bit PC-relative offset, shifted left 2 (branch relative) */
533 /* Used: */
534 HOWTO (IMAGE_REL_PPC_REL24, /* type */
535 0, /* rightshift */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
537 26, /* bitsize */
538 true, /* pc_relative */
539 0, /* bitpos */
540 complain_overflow_signed, /* complain_on_overflow */
541 0, /* special_function */
542 "REL24", /* name */
543 true, /* partial_inplace */
544 0x3fffffc, /* src_mask */
545 0x3fffffc, /* dst_mask */
546 false), /* pcrel_offset */
547
548 /* IMAGE_REL_PPC_REL14 0x0007 */
549 /* 16-bit PC-relative offset, shifted left 2 (br cond relative) */
550 /* FIXME: the mask is likely wrong, and the bit position may be as well */
551 /* FIXME: how does it know how far to shift? */
552 /* Unused: */
553 HOWTO (IMAGE_REL_PPC_ADDR14, /* type */
554 1, /* rightshift */
555 1, /* size (0 = byte, 1 = short, 2 = long) */
556 16, /* bitsize */
557 false, /* pc_relative */
558 0, /* bitpos */
559 complain_overflow_signed, /* complain_on_overflow */
560 0, /* special_function */
561 "ADDR16", /* name */
562 true, /* partial_inplace */
563 0xffff, /* src_mask */
564 0xffff, /* dst_mask */
565 true), /* pcrel_offset */
566
567 /* IMAGE_REL_PPC_TOCREL16 0x0008 */
568 /* 16-bit offset from TOC base */
569 /* Used: */
570 HOWTO (IMAGE_REL_PPC_TOCREL16,/* type */
571 0, /* rightshift */
572 1, /* size (0 = byte, 1 = short, 2 = long) */
573 16, /* bitsize */
574 false, /* pc_relative */
575 0, /* bitpos */
576 complain_overflow_dont, /* complain_on_overflow */
577 ppc_toc16_reloc, /* special_function */
578 "TOCREL16", /* name */
579 false, /* partial_inplace */
580 0xffff, /* src_mask */
581 0xffff, /* dst_mask */
582 false), /* pcrel_offset */
583
584 /* IMAGE_REL_PPC_TOCREL14 0x0009 */
585 /* 16-bit offset from TOC base, shifted left 2 (load doubleword) */
586 /* Unused: */
587 HOWTO (IMAGE_REL_PPC_TOCREL14,/* type */
588 1, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
591 false, /* pc_relative */
592 0, /* bitpos */
593 complain_overflow_signed, /* complain_on_overflow */
594 0, /* special_function */
595 "TOCREL14", /* name */
596 false, /* partial_inplace */
597 0xffff, /* src_mask */
598 0xffff, /* dst_mask */
599 false), /* pcrel_offset */
600
601 /* IMAGE_REL_PPC_ADDR32NB 0x000A */
602 /* 32-bit addr w/ image base */
603 /* Unused: */
604 HOWTO (IMAGE_REL_PPC_ADDR32NB,/* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
608 false, /* pc_relative */
609 0, /* bitpos */
610 complain_overflow_signed, /* complain_on_overflow */
611 0, /* special_function */
612 "ADDR32NB", /* name */
613 true, /* partial_inplace */
614 0xffffffff, /* src_mask */
615 0xffffffff, /* dst_mask */
616 false), /* pcrel_offset */
617
618 /* IMAGE_REL_PPC_SECREL 0x000B */
619 /* va of containing section (as in an image sectionhdr) */
620 /* Unused: */
621 HOWTO (IMAGE_REL_PPC_SECREL,/* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 32, /* bitsize */
625 false, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_signed, /* complain_on_overflow */
628 ppc_secrel_reloc, /* special_function */
629 "SECREL", /* name */
630 true, /* partial_inplace */
631 0xffffffff, /* src_mask */
632 0xffffffff, /* dst_mask */
633 true), /* pcrel_offset */
634
635 /* IMAGE_REL_PPC_SECTION 0x000C */
636 /* sectionheader number */
637 /* Unused: */
638 HOWTO (IMAGE_REL_PPC_SECTION,/* type */
639 0, /* rightshift */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
641 32, /* bitsize */
642 false, /* pc_relative */
643 0, /* bitpos */
644 complain_overflow_signed, /* complain_on_overflow */
645 ppc_section_reloc, /* special_function */
646 "SECTION", /* name */
647 true, /* partial_inplace */
648 0xffffffff, /* src_mask */
649 0xffffffff, /* dst_mask */
650 true), /* pcrel_offset */
651
652 /* IMAGE_REL_PPC_IFGLUE 0x000D */
653 /* substitute TOC restore instruction iff symbol is glue code */
654 /* Used: */
655 HOWTO (IMAGE_REL_PPC_IFGLUE,/* type */
656 0, /* rightshift */
657 2, /* size (0 = byte, 1 = short, 2 = long) */
658 32, /* bitsize */
659 false, /* pc_relative */
660 0, /* bitpos */
661 complain_overflow_signed, /* complain_on_overflow */
662 0, /* special_function */
663 "IFGLUE", /* name */
664 true, /* partial_inplace */
665 0xffffffff, /* src_mask */
666 0xffffffff, /* dst_mask */
667 false), /* pcrel_offset */
668
669 /* IMAGE_REL_PPC_IMGLUE 0x000E */
670 /* symbol is glue code; virtual address is TOC restore instruction */
671 /* Unused: */
672 HOWTO (IMAGE_REL_PPC_IMGLUE,/* type */
673 0, /* rightshift */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
675 32, /* bitsize */
676 false, /* pc_relative */
677 0, /* bitpos */
678 complain_overflow_dont, /* complain_on_overflow */
679 ppc_imglue_reloc, /* special_function */
680 "IMGLUE", /* name */
681 false, /* partial_inplace */
682 0xffffffff, /* src_mask */
683 0xffffffff, /* dst_mask */
684 false), /* pcrel_offset */
685
686 /* IMAGE_REL_PPC_SECREL16 0x000F */
687 /* va of containing section (limited to 16 bits) */
688 /* Unused: */
689 HOWTO (IMAGE_REL_PPC_SECREL16,/* type */
690 0, /* rightshift */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
693 false, /* pc_relative */
694 0, /* bitpos */
695 complain_overflow_signed, /* complain_on_overflow */
696 0, /* special_function */
697 "SECREL16", /* name */
698 true, /* partial_inplace */
699 0xffff, /* src_mask */
700 0xffff, /* dst_mask */
701 true), /* pcrel_offset */
702
703 /* IMAGE_REL_PPC_REFHI 0x0010 */
704 /* Unused: */
705 HOWTO (IMAGE_REL_PPC_REFHI, /* type */
706 0, /* rightshift */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
708 16, /* bitsize */
709 false, /* pc_relative */
710 0, /* bitpos */
711 complain_overflow_signed, /* complain_on_overflow */
712 ppc_refhi_reloc, /* special_function */
713 "REFHI", /* name */
714 true, /* partial_inplace */
715 0xffffffff, /* src_mask */
716 0xffffffff, /* dst_mask */
717 false), /* pcrel_offset */
718
719 /* IMAGE_REL_PPC_REFLO 0x0011 */
720 /* Unused: */
721 HOWTO (IMAGE_REL_PPC_REFLO, /* type */
722 0, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
725 false, /* pc_relative */
726 0, /* bitpos */
727 complain_overflow_signed, /* complain_on_overflow */
728 ppc_refhi_reloc, /* special_function */
729 "REFLO", /* name */
730 true, /* partial_inplace */
731 0xffffffff, /* src_mask */
732 0xffffffff, /* dst_mask */
733 false), /* pcrel_offset */
734
735 /* IMAGE_REL_PPC_PAIR 0x0012 */
736 /* Unused: */
737 HOWTO (IMAGE_REL_PPC_PAIR, /* type */
738 0, /* rightshift */
739 1, /* size (0 = byte, 1 = short, 2 = long) */
740 16, /* bitsize */
741 false, /* pc_relative */
742 0, /* bitpos */
743 complain_overflow_signed, /* complain_on_overflow */
744 ppc_pair_reloc, /* special_function */
745 "PAIR", /* name */
746 true, /* partial_inplace */
747 0xffffffff, /* src_mask */
748 0xffffffff, /* dst_mask */
749 false), /* pcrel_offset */
750
751 /* IMAGE_REL_PPC_TOCREL16_DEFN 0x0013 */
752 /* 16-bit offset from TOC base, without causing a definition */
753 /* Used: */
754 HOWTO ( (IMAGE_REL_PPC_TOCREL16 | IMAGE_REL_PPC_TOCDEFN), /* type */
755 0, /* rightshift */
756 1, /* size (0 = byte, 1 = short, 2 = long) */
757 16, /* bitsize */
758 false, /* pc_relative */
759 0, /* bitpos */
760 complain_overflow_dont, /* complain_on_overflow */
761 0, /* special_function */
762 "TOCREL16, TOCDEFN", /* name */
763 false, /* partial_inplace */
764 0xffff, /* src_mask */
765 0xffff, /* dst_mask */
766 false), /* pcrel_offset */
767
768 };
769 \f
770 /* Some really cheezy macros that can be turned on to test stderr :-) */
771
772 #ifdef DEBUG_RELOC
773 #define UN_IMPL(x) \
774 { \
775 static int i; \
776 if (i == 0) \
777 { \
778 i = 1; \
779 fprintf (stderr,_("Unimplemented Relocation -- %s\n"),x); \
780 } \
781 }
782
783 #define DUMP_RELOC(n,r) \
784 { \
785 fprintf (stderr,"%s sym %d, addr %d, addend %d\n", \
786 n, (*(r->sym_ptr_ptr))->name, \
787 r->address, r->addend); \
788 }
789
790 /* Given a reloc name, n, and a pointer to an internal_reloc,
791 dump out interesting information on the contents
792
793 #define n_name _n._n_name
794 #define n_zeroes _n._n_n._n_zeroes
795 #define n_offset _n._n_n._n_offset
796
797 */
798
799 #define DUMP_RELOC2(n,r) \
800 { \
801 fprintf (stderr,"%s sym %d, r_vaddr %d %s\n", \
802 n, r->r_symndx, r->r_vaddr,\
803 (((r->r_type) & IMAGE_REL_PPC_TOCDEFN) == 0) \
804 ?" ":" TOCDEFN" ); \
805 }
806
807 #else
808 #define UN_IMPL(x)
809 #define DUMP_RELOC(n,r)
810 #define DUMP_RELOC2(n,r)
811 #endif
812 \f
813 /* toc construction and management routines */
814
815 /* This file is compiled twice, and these variables are defined in one
816 of the compilations. FIXME: This is confusing and weird. Also,
817 BFD should not use global variables. */
818 extern bfd* bfd_of_toc_owner;
819 extern long int global_toc_size;
820
821 extern long int import_table_size;
822 extern long int first_thunk_address;
823 extern long int thunk_size;
824
825 enum toc_type
826 {
827 default_toc,
828 toc_32,
829 toc_64
830 };
831
832 enum ref_category
833 {
834 priv,
835 pub,
836 tocdata
837 };
838
839 struct list_ele
840 {
841 struct list_ele *next;
842 bfd_vma addr;
843 enum ref_category cat;
844 int offset;
845 const char *name;
846 };
847
848 extern struct list_ele *head;
849 extern struct list_ele *tail;
850
851 static void record_toc
852 PARAMS ((asection *, bfd_signed_vma, enum ref_category, const char *));
853
854 static void
855 record_toc (toc_section, our_toc_offset, cat, name)
856 asection *toc_section;
857 bfd_signed_vma our_toc_offset;
858 enum ref_category cat;
859 const char *name;
860 {
861 /* add this entry to our toc addr-offset-name list */
862 bfd_size_type amt = sizeof (struct list_ele);
863 struct list_ele *t = (struct list_ele *) bfd_malloc (amt);
864
865 if (t == NULL)
866 abort ();
867 t->next = 0;
868 t->offset = our_toc_offset;
869 t->name = name;
870 t->cat = cat;
871 t->addr = toc_section->output_offset + our_toc_offset;
872
873 if (head == 0)
874 {
875 head = t;
876 tail = t;
877 }
878 else
879 {
880 tail->next = t;
881 tail = t;
882 }
883 }
884
885 #ifdef COFF_IMAGE_WITH_PE
886
887 static boolean ppc_record_toc_entry
888 PARAMS ((bfd *, struct bfd_link_info *, asection *, int, enum toc_type));
889 static void ppc_mark_symbol_as_glue
890 PARAMS ((bfd *, int, struct internal_reloc *));
891
892 /* record a toc offset against a symbol */
893 static boolean
894 ppc_record_toc_entry(abfd, info, sec, sym, toc_kind)
895 bfd *abfd;
896 struct bfd_link_info *info ATTRIBUTE_UNUSED;
897 asection *sec ATTRIBUTE_UNUSED;
898 int sym;
899 enum toc_type toc_kind ATTRIBUTE_UNUSED;
900 {
901 struct ppc_coff_link_hash_entry *h;
902 const char *name;
903
904 int *local_syms;
905
906 h = 0;
907
908 h = (struct ppc_coff_link_hash_entry *) (obj_coff_sym_hashes (abfd)[sym]);
909 if (h != 0)
910 {
911 HASH_CHECK(h);
912 }
913
914 if (h == 0)
915 {
916 local_syms = obj_coff_local_toc_table(abfd);
917 if (local_syms == 0)
918 {
919 unsigned int i;
920 bfd_size_type amt;
921 /* allocate a table */
922 amt = (bfd_size_type) obj_raw_syment_count (abfd) * sizeof (int);
923 local_syms = (int *) bfd_zalloc (abfd, amt);
924 if (local_syms == 0)
925 return false;
926 obj_coff_local_toc_table (abfd) = local_syms;
927 for (i = 0; i < obj_raw_syment_count (abfd); ++i)
928 {
929 SET_UNALLOCATED (local_syms[i]);
930 }
931 }
932
933 if (IS_UNALLOCATED(local_syms[sym]))
934 {
935 local_syms[sym] = global_toc_size;
936 global_toc_size += 4;
937
938 /* The size must fit in a 16bit displacment */
939 if (global_toc_size > 65535)
940 {
941 (*_bfd_error_handler) (_("TOC overflow"));
942 bfd_set_error (bfd_error_file_too_big);
943 return false;
944 }
945 }
946 }
947 else
948 {
949 name = h->root.root.root.string;
950
951 /* check to see if there's a toc slot allocated. If not, do it
952 here. It will be used in relocate_section */
953 if (IS_UNALLOCATED(h->toc_offset))
954 {
955 h->toc_offset = global_toc_size;
956 global_toc_size += 4;
957
958 /* The size must fit in a 16bit displacment */
959 if (global_toc_size >= 65535)
960 {
961 (*_bfd_error_handler) (_("TOC overflow"));
962 bfd_set_error (bfd_error_file_too_big);
963 return false;
964 }
965 }
966 }
967
968 return true;
969 }
970
971 /* record a toc offset against a symbol */
972 static void
973 ppc_mark_symbol_as_glue(abfd, sym, rel)
974 bfd *abfd;
975 int sym;
976 struct internal_reloc *rel;
977 {
978 struct ppc_coff_link_hash_entry *h;
979
980 h = (struct ppc_coff_link_hash_entry *) (obj_coff_sym_hashes (abfd)[sym]);
981
982 HASH_CHECK(h);
983
984 h->symbol_is_glue = 1;
985 h->glue_insn = bfd_get_32 (abfd, (bfd_byte *) &rel->r_vaddr);
986
987 return;
988 }
989
990 #endif /* COFF_IMAGE_WITH_PE */
991 \f
992 /* Return true if this relocation should
993 appear in the output .reloc section. */
994
995 static boolean in_reloc_p(abfd, howto)
996 bfd * abfd ATTRIBUTE_UNUSED;
997 reloc_howto_type *howto;
998 {
999 return
1000 (! howto->pc_relative)
1001 && (howto->type != IMAGE_REL_PPC_ADDR32NB)
1002 && (howto->type != IMAGE_REL_PPC_TOCREL16)
1003 && (howto->type != IMAGE_REL_PPC_IMGLUE)
1004 && (howto->type != IMAGE_REL_PPC_IFGLUE)
1005 && (howto->type != IMAGE_REL_PPC_SECREL)
1006 && (howto->type != IMAGE_REL_PPC_SECTION)
1007 && (howto->type != IMAGE_REL_PPC_SECREL16)
1008 && (howto->type != IMAGE_REL_PPC_REFHI)
1009 && (howto->type != IMAGE_REL_PPC_REFLO)
1010 && (howto->type != IMAGE_REL_PPC_PAIR)
1011 && (howto->type != IMAGE_REL_PPC_TOCREL16_DEFN) ;
1012 }
1013
1014 #if 0
1015
1016 /* this function is in charge of performing all the ppc PE relocations */
1017 /* Don't yet know if we want to do this this particular way ... (krk) */
1018 /* FIXME: (it is not yet enabled) */
1019
1020 static bfd_reloc_status_type
1021 pe_ppc_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
1022 error_message)
1023 bfd *abfd;
1024 arelent *reloc_entry;
1025 asymbol *symbol_in;
1026 PTR data;
1027 asection *input_section;
1028 bfd *output_bfd;
1029 char **error_message;
1030 {
1031 /* the consth relocation comes in two parts, we have to remember
1032 the state between calls, in these variables */
1033 static boolean part1_consth_active = false;
1034 static unsigned long part1_consth_value;
1035
1036 unsigned long sym_value;
1037 unsigned short r_type;
1038 unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
1039
1040 r_type = reloc_entry->howto->type;
1041
1042 if (output_bfd)
1043 {
1044 /* Partial linking - do nothing */
1045 reloc_entry->address += input_section->output_offset;
1046 return bfd_reloc_ok;
1047 }
1048
1049 if (symbol_in != NULL
1050 && bfd_is_und_section (symbol_in->section))
1051 {
1052 /* Keep the state machine happy in case we're called again */
1053 if (r_type == IMAGE_REL_PPC_REFHI)
1054 {
1055 part1_consth_active = true;
1056 part1_consth_value = 0;
1057 }
1058 return(bfd_reloc_undefined);
1059 }
1060
1061 if ((part1_consth_active) && (r_type != IMAGE_REL_PPC_PAIR))
1062 {
1063 part1_consth_active = false;
1064 *error_message = (char *) _("Missing PAIR");
1065 return(bfd_reloc_dangerous);
1066 }
1067
1068 sym_value = get_symbol_value(symbol_in);
1069
1070 return(bfd_reloc_ok);
1071 }
1072
1073 #endif /* 0 */
1074
1075 /* The reloc processing routine for the optimized COFF linker. */
1076
1077 static boolean
1078 coff_ppc_relocate_section (output_bfd, info, input_bfd, input_section,
1079 contents, relocs, syms, sections)
1080 bfd *output_bfd;
1081 struct bfd_link_info *info;
1082 bfd *input_bfd;
1083 asection *input_section;
1084 bfd_byte *contents;
1085 struct internal_reloc *relocs;
1086 struct internal_syment *syms;
1087 asection **sections;
1088 {
1089 struct internal_reloc *rel;
1090 struct internal_reloc *relend;
1091 boolean hihalf;
1092 bfd_vma hihalf_val;
1093 asection *toc_section = 0;
1094 bfd_vma relocation;
1095 reloc_howto_type *howto = 0;
1096
1097 /* If we are performing a relocateable link, we don't need to do a
1098 thing. The caller will take care of adjusting the reloc
1099 addresses and symbol indices. */
1100 if (info->relocateable)
1101 return true;
1102
1103 hihalf = false;
1104 hihalf_val = 0;
1105
1106 rel = relocs;
1107 relend = rel + input_section->reloc_count;
1108 for (; rel < relend; rel++)
1109 {
1110 long symndx;
1111 struct ppc_coff_link_hash_entry *h;
1112 struct internal_syment *sym;
1113 bfd_vma val;
1114
1115 asection *sec;
1116 bfd_reloc_status_type rstat;
1117 bfd_byte *loc;
1118
1119 unsigned short r_type = EXTRACT_TYPE (rel->r_type);
1120 unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
1121
1122 symndx = rel->r_symndx;
1123 loc = contents + rel->r_vaddr - input_section->vma;
1124
1125 /* FIXME: check bounds on r_type */
1126 howto = ppc_coff_howto_table + r_type;
1127
1128 if (symndx == -1)
1129 {
1130 h = NULL;
1131 sym = NULL;
1132 }
1133 else
1134 {
1135 h = (struct ppc_coff_link_hash_entry *)
1136 (obj_coff_sym_hashes (input_bfd)[symndx]);
1137 if (h != 0)
1138 {
1139 HASH_CHECK(h);
1140 }
1141
1142 sym = syms + symndx;
1143 }
1144
1145 if (r_type == IMAGE_REL_PPC_IMGLUE && h == 0)
1146 {
1147 /* An IMGLUE reloc must have a name. Something is very wrong. */
1148 abort ();
1149 }
1150
1151 sec = NULL;
1152 val = 0;
1153
1154 /* FIXME: PAIR unsupported in the following code */
1155 if (h == NULL)
1156 {
1157 if (symndx == -1)
1158 sec = bfd_abs_section_ptr;
1159 else
1160 {
1161 sec = sections[symndx];
1162 val = (sec->output_section->vma
1163 + sec->output_offset
1164 + sym->n_value);
1165 if (! obj_pe (output_bfd))
1166 val -= sec->vma;
1167 }
1168 }
1169 else
1170 {
1171 HASH_CHECK(h);
1172
1173 if (h->root.root.type == bfd_link_hash_defined
1174 || h->root.root.type == bfd_link_hash_defweak)
1175 {
1176 sec = h->root.root.u.def.section;
1177 val = (h->root.root.u.def.value
1178 + sec->output_section->vma
1179 + sec->output_offset);
1180 }
1181 else
1182 {
1183 if (! ((*info->callbacks->undefined_symbol)
1184 (info, h->root.root.root.string, input_bfd, input_section,
1185 rel->r_vaddr - input_section->vma, true)))
1186 return false;
1187 }
1188 }
1189
1190 rstat = bfd_reloc_ok;
1191
1192 /* Each case must do its own relocation, setting rstat appropriately */
1193 switch (r_type)
1194 {
1195 default:
1196 (*_bfd_error_handler)
1197 (_("%s: unsupported relocation type 0x%02x"),
1198 bfd_archive_filename (input_bfd), r_type);
1199 bfd_set_error (bfd_error_bad_value);
1200 return false;
1201 case IMAGE_REL_PPC_TOCREL16:
1202 {
1203 bfd_signed_vma our_toc_offset;
1204 int fixit;
1205
1206 DUMP_RELOC2(howto->name, rel);
1207
1208 if (toc_section == 0)
1209 {
1210 toc_section = bfd_get_section_by_name (bfd_of_toc_owner,
1211 TOC_SECTION_NAME);
1212
1213 if ( toc_section == NULL )
1214 {
1215 /* There is no toc section. Something is very wrong. */
1216 abort ();
1217 }
1218 }
1219
1220 /*
1221 * Amazing bit tricks present. As we may have seen earlier, we
1222 * use the 1 bit to tell us whether or not a toc offset has been
1223 * allocated. Now that they've all been allocated, we will use
1224 * the 1 bit to tell us if we've written this particular toc
1225 * entry out.
1226 */
1227 fixit = false;
1228 if (h == 0)
1229 { /* it is a file local symbol */
1230 int *local_toc_table;
1231 const char *name;
1232
1233 sym = syms + symndx;
1234 name = sym->_n._n_name;
1235
1236 local_toc_table = obj_coff_local_toc_table(input_bfd);
1237 our_toc_offset = local_toc_table[symndx];
1238
1239 if (IS_WRITTEN(our_toc_offset))
1240 {
1241 /* if it has been written out, it is marked with the
1242 1 bit. Fix up our offset, but do not write it out
1243 again.
1244 */
1245 MAKE_ADDR_AGAIN(our_toc_offset);
1246 }
1247 else
1248 {
1249 /* write out the toc entry */
1250 record_toc (toc_section, our_toc_offset, priv,
1251 strdup (name));
1252
1253 bfd_put_32 (output_bfd, val,
1254 toc_section->contents + our_toc_offset);
1255
1256 MARK_AS_WRITTEN(local_toc_table[symndx]);
1257 fixit = true;
1258 }
1259 }
1260 else
1261 {
1262 const char *name = h->root.root.root.string;
1263 our_toc_offset = h->toc_offset;
1264
1265 if ((r_flags & IMAGE_REL_PPC_TOCDEFN)
1266 == IMAGE_REL_PPC_TOCDEFN )
1267 {
1268 /* This is unbelievable cheese. Some knowledgable asm
1269 hacker has decided to use r2 as a base for loading
1270 a value. He/She does this by setting the tocdefn bit,
1271 and not supplying a toc definition. The behaviour is
1272 then to use the difference between the value of the
1273 symbol and the actual location of the toc as the toc
1274 index.
1275
1276 In fact, what is usually happening is, because the
1277 Import Address Table is mapped immediately following
1278 the toc, some trippy library code trying for speed on
1279 dll linkage, takes advantage of that and considers
1280 the IAT to be part of the toc, thus saving a load.
1281 */
1282
1283 our_toc_offset = val - (toc_section->output_section->vma
1284 + toc_section->output_offset);
1285
1286 /* The size must still fit in a 16bit displacment */
1287 if ((bfd_vma) our_toc_offset >= 65535)
1288 {
1289 (*_bfd_error_handler)
1290 (_("%s: Relocation for %s of %lx exceeds Toc size limit"),
1291 bfd_archive_filename (input_bfd), name,
1292 (unsigned long) our_toc_offset);
1293 bfd_set_error (bfd_error_bad_value);
1294 return false;
1295 }
1296
1297 record_toc (toc_section, our_toc_offset, pub,
1298 strdup (name));
1299 }
1300 else if (IS_WRITTEN(our_toc_offset))
1301 {
1302 /* if it has been written out, it is marked with the
1303 1 bit. Fix up our offset, but do not write it out
1304 again.
1305 */
1306 MAKE_ADDR_AGAIN(our_toc_offset);
1307 }
1308 else
1309 {
1310 record_toc(toc_section, our_toc_offset, pub,
1311 strdup (name));
1312
1313 /* write out the toc entry */
1314 bfd_put_32 (output_bfd, val,
1315 toc_section->contents + our_toc_offset);
1316
1317 MARK_AS_WRITTEN(h->toc_offset);
1318 /* The tricky part is that this is the address that */
1319 /* needs a .reloc entry for it */
1320 fixit = true;
1321 }
1322 }
1323
1324 if (fixit && info->base_file)
1325 {
1326 /* So if this is non pcrelative, and is referenced
1327 to a section or a common symbol, then it needs a reloc */
1328
1329 /* relocation to a symbol in a section which
1330 isn't absolute - we output the address here
1331 to a file */
1332
1333 bfd_vma addr = (toc_section->output_section->vma
1334 + toc_section->output_offset + our_toc_offset);
1335
1336 if (coff_data(output_bfd)->pe)
1337 addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
1338
1339 fwrite (&addr, 1,4, (FILE *) info->base_file);
1340 }
1341
1342 /* FIXME: this test is conservative */
1343 if ((r_flags & IMAGE_REL_PPC_TOCDEFN) != IMAGE_REL_PPC_TOCDEFN
1344 && (bfd_vma) our_toc_offset > toc_section->_raw_size)
1345 {
1346 (*_bfd_error_handler)
1347 (_("%s: Relocation exceeds allocated TOC (%lx)"),
1348 bfd_archive_filename (input_bfd),
1349 (unsigned long) toc_section->_raw_size);
1350 bfd_set_error (bfd_error_bad_value);
1351 return false;
1352 }
1353
1354 /* Now we know the relocation for this toc reference */
1355 relocation = our_toc_offset + TOC_LOAD_ADJUSTMENT;
1356 rstat = _bfd_relocate_contents (howto, input_bfd, relocation, loc);
1357 }
1358 break;
1359 case IMAGE_REL_PPC_IFGLUE:
1360 {
1361 /* To solve this, we need to know whether or not the symbol */
1362 /* appearing on the call instruction is a glue function or not. */
1363 /* A glue function must announce itself via a IMGLUE reloc, and */
1364 /* the reloc contains the required toc restore instruction */
1365
1366 bfd_vma x;
1367 const char *my_name;
1368 DUMP_RELOC2(howto->name, rel);
1369
1370 if (h != 0)
1371 {
1372 my_name = h->root.root.root.string;
1373 if (h->symbol_is_glue == 1)
1374 {
1375 x = bfd_get_32 (input_bfd, loc);
1376 bfd_put_32 (input_bfd, (bfd_vma) h->glue_insn, loc);
1377 }
1378 }
1379 }
1380 break;
1381 case IMAGE_REL_PPC_SECREL:
1382 /* Unimplemented: codeview debugging information */
1383 /* For fast access to the header of the section
1384 containing the item. */
1385 break;
1386 case IMAGE_REL_PPC_SECTION:
1387 /* Unimplemented: codeview debugging information */
1388 /* Is used to indicate that the value should be relative
1389 to the beginning of the section that contains the
1390 symbol */
1391 break;
1392 case IMAGE_REL_PPC_ABSOLUTE:
1393 {
1394 const char *my_name;
1395 if (h == 0)
1396 my_name = (syms+symndx)->_n._n_name;
1397 else
1398 {
1399 my_name = h->root.root.root.string;
1400 }
1401
1402 fprintf (stderr,
1403 _("Warning: unsupported reloc %s <file %s, section %s>\n"),
1404 howto->name,
1405 bfd_archive_filename(input_bfd),
1406 input_section->name);
1407
1408 fprintf (stderr,"sym %ld (%s), r_vaddr %ld (%lx)\n",
1409 rel->r_symndx, my_name, (long) rel->r_vaddr,
1410 (unsigned long) rel->r_vaddr);
1411 }
1412 break;
1413 case IMAGE_REL_PPC_IMGLUE:
1414 {
1415 /* There is nothing to do now. This reloc was noted in the first
1416 pass over the relocs, and the glue instruction extracted */
1417 const char *my_name;
1418 if (h->symbol_is_glue == 1)
1419 break;
1420 my_name = h->root.root.root.string;
1421
1422 (*_bfd_error_handler)
1423 (_("%s: Out of order IMGLUE reloc for %s"),
1424 bfd_archive_filename (input_bfd), my_name);
1425 bfd_set_error (bfd_error_bad_value);
1426 return false;
1427 }
1428
1429 case IMAGE_REL_PPC_ADDR32NB:
1430 {
1431 const char *name = 0;
1432 DUMP_RELOC2(howto->name, rel);
1433
1434 if (strncmp(".idata$2",input_section->name,8) == 0 && first_thunk_address == 0)
1435 {
1436 /* set magic values */
1437 int idata5offset;
1438 struct coff_link_hash_entry *myh;
1439 myh = coff_link_hash_lookup (coff_hash_table (info),
1440 "__idata5_magic__",
1441 false, false, true);
1442 first_thunk_address = myh->root.u.def.value +
1443 sec->output_section->vma +
1444 sec->output_offset -
1445 pe_data(output_bfd)->pe_opthdr.ImageBase;
1446
1447 idata5offset = myh->root.u.def.value;
1448 myh = coff_link_hash_lookup (coff_hash_table (info),
1449 "__idata6_magic__",
1450 false, false, true);
1451
1452 thunk_size = myh->root.u.def.value - idata5offset;
1453 myh = coff_link_hash_lookup (coff_hash_table (info),
1454 "__idata4_magic__",
1455 false, false, true);
1456 import_table_size = myh->root.u.def.value;
1457 }
1458
1459 if (h == 0)
1460 { /* it is a file local symbol */
1461 sym = syms + symndx;
1462 name = sym->_n._n_name;
1463 }
1464 else
1465 {
1466 char *target = 0;
1467
1468 name = h->root.root.root.string;
1469 if (strcmp(".idata$2", name) == 0)
1470 target = "__idata2_magic__";
1471 else if (strcmp(".idata$4", name) == 0)
1472 target = "__idata4_magic__";
1473 else if (strcmp(".idata$5", name) == 0)
1474 target = "__idata5_magic__";
1475
1476 if (target != 0)
1477 {
1478 struct coff_link_hash_entry *myh;
1479
1480 myh = coff_link_hash_lookup (coff_hash_table (info),
1481 target,
1482 false, false, true);
1483 if (myh == 0)
1484 {
1485 /* Missing magic cookies. Something is very wrong. */
1486 abort ();
1487 }
1488
1489 val = myh->root.u.def.value +
1490 sec->output_section->vma + sec->output_offset;
1491 if (first_thunk_address == 0)
1492 {
1493 int idata5offset;
1494 myh = coff_link_hash_lookup (coff_hash_table (info),
1495 "__idata5_magic__",
1496 false, false, true);
1497 first_thunk_address = myh->root.u.def.value +
1498 sec->output_section->vma +
1499 sec->output_offset -
1500 pe_data(output_bfd)->pe_opthdr.ImageBase;
1501
1502 idata5offset = myh->root.u.def.value;
1503 myh = coff_link_hash_lookup (coff_hash_table (info),
1504 "__idata6_magic__",
1505 false, false, true);
1506
1507 thunk_size = myh->root.u.def.value - idata5offset;
1508 myh = coff_link_hash_lookup (coff_hash_table (info),
1509 "__idata4_magic__",
1510 false, false, true);
1511 import_table_size = myh->root.u.def.value;
1512 }
1513 }
1514 }
1515
1516 rstat = _bfd_relocate_contents (howto,
1517 input_bfd,
1518 val -
1519 pe_data(output_bfd)->pe_opthdr.ImageBase,
1520 loc);
1521 }
1522 break;
1523
1524 case IMAGE_REL_PPC_REL24:
1525 DUMP_RELOC2(howto->name, rel);
1526 val -= (input_section->output_section->vma
1527 + input_section->output_offset);
1528
1529 rstat = _bfd_relocate_contents (howto,
1530 input_bfd,
1531 val,
1532 loc);
1533 break;
1534 case IMAGE_REL_PPC_ADDR16:
1535 case IMAGE_REL_PPC_ADDR24:
1536 case IMAGE_REL_PPC_ADDR32:
1537 DUMP_RELOC2(howto->name, rel);
1538 rstat = _bfd_relocate_contents (howto,
1539 input_bfd,
1540 val,
1541 loc);
1542 break;
1543 }
1544
1545 if ( info->base_file )
1546 {
1547 /* So if this is non pcrelative, and is referenced
1548 to a section or a common symbol, then it needs a reloc */
1549 if (sym && pe_data(output_bfd)->in_reloc_p(output_bfd, howto))
1550 {
1551 /* relocation to a symbol in a section which
1552 isn't absolute - we output the address here
1553 to a file */
1554 bfd_vma addr = rel->r_vaddr
1555 - input_section->vma
1556 + input_section->output_offset
1557 + input_section->output_section->vma;
1558
1559 if (coff_data(output_bfd)->pe)
1560 {
1561 addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
1562 }
1563 fwrite (&addr, 1,4, (FILE *) info->base_file);
1564 }
1565 }
1566
1567 switch (rstat)
1568 {
1569 default:
1570 abort ();
1571 case bfd_reloc_ok:
1572 break;
1573 case bfd_reloc_overflow:
1574 {
1575 const char *name;
1576 char buf[SYMNMLEN + 1];
1577
1578 if (symndx == -1)
1579 name = "*ABS*";
1580 else if (h != NULL)
1581 name = h->root.root.root.string;
1582 else if (sym == NULL)
1583 name = "*unknown*";
1584 else if (sym->_n._n_n._n_zeroes == 0
1585 && sym->_n._n_n._n_offset != 0)
1586 name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
1587 else
1588 {
1589 strncpy (buf, sym->_n._n_name, SYMNMLEN);
1590 buf[SYMNMLEN] = '\0';
1591 name = buf;
1592 }
1593
1594 if (! ((*info->callbacks->reloc_overflow)
1595 (info, name, howto->name,
1596 (bfd_vma) 0, input_bfd,
1597 input_section, rel->r_vaddr - input_section->vma)))
1598 {
1599 return false;
1600 }
1601 }
1602 }
1603
1604 }
1605
1606 return true;
1607 }
1608
1609 #ifdef COFF_IMAGE_WITH_PE
1610
1611 /* FIXME: BFD should not use global variables. This file is compiled
1612 twice, and these variables are shared. This is confusing and
1613 weird. */
1614
1615 long int global_toc_size = 4;
1616
1617 bfd* bfd_of_toc_owner = 0;
1618
1619 long int import_table_size;
1620 long int first_thunk_address;
1621 long int thunk_size;
1622
1623 struct list_ele *head;
1624 struct list_ele *tail;
1625
1626 static char *
1627 h1 = N_("\n\t\t\tTOC MAPPING\n\n");
1628 static char *
1629 h2 = N_(" TOC disassembly Comments Name\n");
1630 static char *
1631 h3 = N_(" Offset spelling (if present)\n");
1632
1633 void
1634 dump_toc (vfile)
1635 PTR vfile;
1636 {
1637 FILE *file = (FILE *) vfile;
1638 struct list_ele *t;
1639
1640 fprintf (file, _(h1));
1641 fprintf (file, _(h2));
1642 fprintf (file, _(h3));
1643
1644 for (t = head; t != 0; t=t->next)
1645 {
1646 const char *cat = "";
1647
1648 if (t->cat == priv)
1649 cat = _("private ");
1650 else if (t->cat == pub)
1651 cat = _("public ");
1652 else if (t->cat == tocdata)
1653 cat = _("data-in-toc ");
1654
1655 if (t->offset > global_toc_size)
1656 {
1657 if (t->offset <= global_toc_size + thunk_size)
1658 cat = _("IAT reference ");
1659 else
1660 {
1661 fprintf (file,
1662 _("**** global_toc_size %ld(%lx), thunk_size %ld(%lx)\n"),
1663 global_toc_size, global_toc_size,
1664 thunk_size, thunk_size);
1665 cat = _("Out of bounds!");
1666 }
1667 }
1668
1669 fprintf (file,
1670 " %04lx (%d)", (unsigned long) t->offset, t->offset - 32768);
1671 fprintf (file,
1672 " %s %s\n",
1673 cat, t->name);
1674
1675 }
1676
1677 fprintf (file, "\n");
1678 }
1679
1680 boolean
1681 ppc_allocate_toc_section (info)
1682 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1683 {
1684 asection *s;
1685 bfd_byte *foo;
1686 bfd_size_type amt;
1687 static char test_char = '1';
1688
1689 if ( global_toc_size == 0 ) /* FIXME: does this get me in trouble? */
1690 return true;
1691
1692 if (bfd_of_toc_owner == 0)
1693 {
1694 /* No toc owner? Something is very wrong. */
1695 abort ();
1696 }
1697
1698 s = bfd_get_section_by_name ( bfd_of_toc_owner , TOC_SECTION_NAME);
1699 if (s == NULL)
1700 {
1701 /* No toc section? Something is very wrong. */
1702 abort ();
1703 }
1704
1705 amt = global_toc_size;
1706 foo = (bfd_byte *) bfd_alloc (bfd_of_toc_owner, amt);
1707 memset(foo, test_char, (size_t) global_toc_size);
1708
1709 s->_raw_size = s->_cooked_size = global_toc_size;
1710 s->contents = foo;
1711
1712 return true;
1713 }
1714
1715 boolean
1716 ppc_process_before_allocation (abfd, info)
1717 bfd *abfd;
1718 struct bfd_link_info *info;
1719 {
1720 asection *sec;
1721 struct internal_reloc *i, *rel;
1722
1723 /* here we have a bfd that is to be included on the link. We have a hook
1724 to do reloc rummaging, before section sizes are nailed down. */
1725
1726 _bfd_coff_get_external_symbols(abfd);
1727
1728 /* rummage around all the relocs and map the toc */
1729 sec = abfd->sections;
1730
1731 if (sec == 0)
1732 {
1733 return true;
1734 }
1735
1736 for (; sec != 0; sec = sec->next)
1737 {
1738 if (sec->reloc_count == 0)
1739 continue;
1740
1741 /* load the relocs */
1742 /* FIXME: there may be a storage leak here */
1743 i=_bfd_coff_read_internal_relocs(abfd,sec,1,0,0,0);
1744
1745 if (i == 0)
1746 abort ();
1747
1748 for (rel=i;rel<i+sec->reloc_count;++rel)
1749 {
1750 unsigned short r_type = EXTRACT_TYPE (rel->r_type);
1751 unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
1752 boolean ok = true;
1753
1754 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
1755
1756 switch(r_type)
1757 {
1758 case IMAGE_REL_PPC_TOCREL16:
1759 /* if TOCDEFN is on, ignore as someone else has allocated the
1760 toc entry */
1761 if ( (r_flags & IMAGE_REL_PPC_TOCDEFN) != IMAGE_REL_PPC_TOCDEFN )
1762 ok = ppc_record_toc_entry(abfd, info, sec,
1763 rel->r_symndx, default_toc);
1764 if (!ok)
1765 return false;
1766 break;
1767 case IMAGE_REL_PPC_IMGLUE:
1768 ppc_mark_symbol_as_glue(abfd, rel->r_symndx, rel);
1769 break;
1770 default:
1771 break;
1772 }
1773 }
1774 }
1775
1776 return true;
1777 }
1778
1779 #endif
1780
1781 static bfd_reloc_status_type
1782 ppc_refhi_reloc (abfd,
1783 reloc_entry,
1784 symbol,
1785 data,
1786 input_section,
1787 output_bfd,
1788 error_message)
1789 bfd *abfd ATTRIBUTE_UNUSED;
1790 arelent *reloc_entry ATTRIBUTE_UNUSED;
1791 asymbol *symbol ATTRIBUTE_UNUSED;
1792 PTR data ATTRIBUTE_UNUSED;
1793 asection *input_section ATTRIBUTE_UNUSED;
1794 bfd *output_bfd;
1795 char **error_message ATTRIBUTE_UNUSED;
1796 {
1797 UN_IMPL("REFHI");
1798 DUMP_RELOC("REFHI",reloc_entry);
1799
1800 if (output_bfd == (bfd *) NULL)
1801 return bfd_reloc_continue;
1802
1803 return bfd_reloc_undefined;
1804 }
1805
1806 #if 0
1807
1808 static bfd_reloc_status_type
1809 ppc_reflo_reloc (abfd,
1810 reloc_entry,
1811 symbol,
1812 data,
1813 input_section,
1814 output_bfd,
1815 error_message)
1816 bfd *abfd;
1817 arelent *reloc_entry;
1818 asymbol *symbol;
1819 PTR data;
1820 asection *input_section;
1821 bfd *output_bfd;
1822 char **error_message;
1823 {
1824 UN_IMPL("REFLO");
1825 DUMP_RELOC("REFLO",reloc_entry);
1826
1827 if (output_bfd == (bfd *) NULL)
1828 return bfd_reloc_continue;
1829
1830 return bfd_reloc_undefined;
1831 }
1832
1833 #endif
1834
1835 static bfd_reloc_status_type
1836 ppc_pair_reloc (abfd,
1837 reloc_entry,
1838 symbol,
1839 data,
1840 input_section,
1841 output_bfd,
1842 error_message)
1843 bfd *abfd ATTRIBUTE_UNUSED;
1844 arelent *reloc_entry ATTRIBUTE_UNUSED;
1845 asymbol *symbol ATTRIBUTE_UNUSED;
1846 PTR data ATTRIBUTE_UNUSED;
1847 asection *input_section ATTRIBUTE_UNUSED;
1848 bfd *output_bfd;
1849 char **error_message ATTRIBUTE_UNUSED;
1850 {
1851 UN_IMPL("PAIR");
1852 DUMP_RELOC("PAIR",reloc_entry);
1853
1854 if (output_bfd == (bfd *) NULL)
1855 return bfd_reloc_continue;
1856
1857 return bfd_reloc_undefined;
1858 }
1859 \f
1860 static bfd_reloc_status_type
1861 ppc_toc16_reloc (abfd,
1862 reloc_entry,
1863 symbol,
1864 data,
1865 input_section,
1866 output_bfd,
1867 error_message)
1868 bfd *abfd ATTRIBUTE_UNUSED;
1869 arelent *reloc_entry ATTRIBUTE_UNUSED;
1870 asymbol *symbol ATTRIBUTE_UNUSED;
1871 PTR data ATTRIBUTE_UNUSED;
1872 asection *input_section ATTRIBUTE_UNUSED;
1873 bfd *output_bfd;
1874 char **error_message ATTRIBUTE_UNUSED;
1875 {
1876 UN_IMPL("TOCREL16");
1877 DUMP_RELOC("TOCREL16",reloc_entry);
1878
1879 if (output_bfd == (bfd *) NULL)
1880 {
1881 return bfd_reloc_continue;
1882 }
1883
1884 return bfd_reloc_ok;
1885 }
1886
1887 #if 0
1888
1889 /* ADDR32NB : 32 bit address relative to the virtual origin. */
1890 /* (On the alpha, this is always a linker generated thunk)*/
1891 /* (i.e. 32bit addr relative to the image base) */
1892 /* */
1893 /* */
1894
1895 static bfd_reloc_status_type
1896 ppc_addr32nb_reloc (abfd,
1897 reloc_entry,
1898 symbol,
1899 data,
1900 input_section,
1901 output_bfd,
1902 error_message)
1903 bfd *abfd;
1904 arelent *reloc_entry;
1905 asymbol *symbol;
1906 PTR data;
1907 asection *input_section;
1908 bfd *output_bfd;
1909 char **error_message;
1910 {
1911 UN_IMPL("ADDR32NB");
1912 DUMP_RELOC("ADDR32NB",reloc_entry);
1913
1914 return bfd_reloc_ok;
1915 }
1916
1917 #endif
1918
1919 static bfd_reloc_status_type
1920 ppc_secrel_reloc (abfd,
1921 reloc_entry,
1922 symbol,
1923 data,
1924 input_section,
1925 output_bfd,
1926 error_message)
1927 bfd *abfd ATTRIBUTE_UNUSED;
1928 arelent *reloc_entry ATTRIBUTE_UNUSED;
1929 asymbol *symbol ATTRIBUTE_UNUSED;
1930 PTR data ATTRIBUTE_UNUSED;
1931 asection *input_section ATTRIBUTE_UNUSED;
1932 bfd *output_bfd;
1933 char **error_message ATTRIBUTE_UNUSED;
1934 {
1935 UN_IMPL("SECREL");
1936 DUMP_RELOC("SECREL",reloc_entry);
1937
1938 if (output_bfd == (bfd *) NULL)
1939 return bfd_reloc_continue;
1940
1941 return bfd_reloc_ok;
1942 }
1943
1944 static bfd_reloc_status_type
1945 ppc_section_reloc (abfd,
1946 reloc_entry,
1947 symbol,
1948 data,
1949 input_section,
1950 output_bfd,
1951 error_message)
1952 bfd *abfd ATTRIBUTE_UNUSED;
1953 arelent *reloc_entry ATTRIBUTE_UNUSED;
1954 asymbol *symbol ATTRIBUTE_UNUSED;
1955 PTR data ATTRIBUTE_UNUSED;
1956 asection *input_section ATTRIBUTE_UNUSED;
1957 bfd *output_bfd;
1958 char **error_message ATTRIBUTE_UNUSED;
1959 {
1960 UN_IMPL("SECTION");
1961 DUMP_RELOC("SECTION",reloc_entry);
1962
1963 if (output_bfd == (bfd *) NULL)
1964 return bfd_reloc_continue;
1965
1966 return bfd_reloc_ok;
1967 }
1968
1969 static bfd_reloc_status_type
1970 ppc_imglue_reloc (abfd,
1971 reloc_entry,
1972 symbol,
1973 data,
1974 input_section,
1975 output_bfd,
1976 error_message)
1977 bfd *abfd ATTRIBUTE_UNUSED;
1978 arelent *reloc_entry ATTRIBUTE_UNUSED;
1979 asymbol *symbol ATTRIBUTE_UNUSED;
1980 PTR data ATTRIBUTE_UNUSED;
1981 asection *input_section ATTRIBUTE_UNUSED;
1982 bfd *output_bfd;
1983 char **error_message ATTRIBUTE_UNUSED;
1984 {
1985 UN_IMPL("IMGLUE");
1986 DUMP_RELOC("IMGLUE",reloc_entry);
1987
1988 if (output_bfd == (bfd *) NULL)
1989 return bfd_reloc_continue;
1990
1991 return bfd_reloc_ok;
1992 }
1993 \f
1994 #define MAX_RELOC_INDEX \
1995 (sizeof (ppc_coff_howto_table) / sizeof (ppc_coff_howto_table[0]) - 1)
1996
1997 /* FIXME: There is a possiblity that when we read in a reloc from a file,
1998 that there are some bits encoded in the upper portion of the
1999 type field. Not yet implemented.
2000 */
2001 static void ppc_coff_rtype2howto PARAMS ((arelent *relent,
2002 struct internal_reloc *internal));
2003
2004 static void
2005 ppc_coff_rtype2howto (relent, internal)
2006 arelent *relent;
2007 struct internal_reloc *internal;
2008 {
2009
2010 /* We can encode one of three things in the type field, aside from the
2011 type:
2012 1. IMAGE_REL_PPC_NEG - indicates the value field is a subtraction
2013 value, rather than an addition value
2014 2. IMAGE_REL_PPC_BRTAKEN, IMAGE_REL_PPC_BRNTAKEN - indicates that
2015 the branch is expected to be taken or not.
2016 3. IMAGE_REL_PPC_TOCDEFN - toc slot definition in the file
2017 For now, we just strip this stuff to find the type, and ignore it other
2018 than that.
2019 */
2020 reloc_howto_type *howto;
2021 unsigned short r_type = EXTRACT_TYPE (internal->r_type);
2022 unsigned short r_flags = EXTRACT_FLAGS(internal->r_type);
2023 unsigned short junk = EXTRACT_JUNK (internal->r_type);
2024
2025 /* the masking process only slices off the bottom byte for r_type. */
2026 if ( r_type > MAX_RELOC_INDEX )
2027 abort ();
2028
2029 /* check for absolute crap */
2030 if ( junk != 0 )
2031 abort ();
2032
2033 switch(r_type)
2034 {
2035 case IMAGE_REL_PPC_ADDR16:
2036 case IMAGE_REL_PPC_REL24:
2037 case IMAGE_REL_PPC_ADDR24:
2038 case IMAGE_REL_PPC_ADDR32:
2039 case IMAGE_REL_PPC_IFGLUE:
2040 case IMAGE_REL_PPC_ADDR32NB:
2041 case IMAGE_REL_PPC_SECTION:
2042 case IMAGE_REL_PPC_SECREL:
2043 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal);
2044 howto = ppc_coff_howto_table + r_type;
2045 break;
2046 case IMAGE_REL_PPC_IMGLUE:
2047 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal);
2048 howto = ppc_coff_howto_table + r_type;
2049 break;
2050 case IMAGE_REL_PPC_TOCREL16:
2051 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal);
2052 if (r_flags & IMAGE_REL_PPC_TOCDEFN)
2053 howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16_DEFN;
2054 else
2055 howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16;
2056 break;
2057 default:
2058 fprintf (stderr,
2059 _("Warning: Unsupported reloc %s [%d] used -- it may not work.\n"),
2060 ppc_coff_howto_table[r_type].name,
2061 r_type);
2062 howto = ppc_coff_howto_table + r_type;
2063 break;
2064 }
2065
2066 relent->howto = howto;
2067
2068 }
2069
2070 static reloc_howto_type *
2071 coff_ppc_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
2072 bfd *abfd ATTRIBUTE_UNUSED;
2073 asection *sec;
2074 struct internal_reloc *rel;
2075 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
2076 struct internal_syment *sym ATTRIBUTE_UNUSED;
2077 bfd_vma *addendp;
2078 {
2079 reloc_howto_type *howto;
2080
2081 /* We can encode one of three things in the type field, aside from the
2082 type:
2083 1. IMAGE_REL_PPC_NEG - indicates the value field is a subtraction
2084 value, rather than an addition value
2085 2. IMAGE_REL_PPC_BRTAKEN, IMAGE_REL_PPC_BRNTAKEN - indicates that
2086 the branch is expected to be taken or not.
2087 3. IMAGE_REL_PPC_TOCDEFN - toc slot definition in the file
2088 For now, we just strip this stuff to find the type, and ignore it other
2089 than that.
2090 */
2091
2092 unsigned short r_type = EXTRACT_TYPE (rel->r_type);
2093 unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
2094 unsigned short junk = EXTRACT_JUNK (rel->r_type);
2095
2096 /* the masking process only slices off the bottom byte for r_type. */
2097 if ( r_type > MAX_RELOC_INDEX )
2098 abort ();
2099
2100 /* check for absolute crap */
2101 if ( junk != 0 )
2102 abort ();
2103
2104 switch(r_type)
2105 {
2106 case IMAGE_REL_PPC_ADDR32NB:
2107 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
2108 *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
2109 howto = ppc_coff_howto_table + r_type;
2110 break;
2111 case IMAGE_REL_PPC_TOCREL16:
2112 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
2113 if (r_flags & IMAGE_REL_PPC_TOCDEFN)
2114 howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16_DEFN;
2115 else
2116 howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16;
2117 break;
2118 case IMAGE_REL_PPC_ADDR16:
2119 case IMAGE_REL_PPC_REL24:
2120 case IMAGE_REL_PPC_ADDR24:
2121 case IMAGE_REL_PPC_ADDR32:
2122 case IMAGE_REL_PPC_IFGLUE:
2123 case IMAGE_REL_PPC_SECTION:
2124 case IMAGE_REL_PPC_SECREL:
2125 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
2126 howto = ppc_coff_howto_table + r_type;
2127 break;
2128 case IMAGE_REL_PPC_IMGLUE:
2129 DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
2130 howto = ppc_coff_howto_table + r_type;
2131 break;
2132 default:
2133 fprintf (stderr,
2134 _("Warning: Unsupported reloc %s [%d] used -- it may not work.\n"),
2135 ppc_coff_howto_table[r_type].name,
2136 r_type);
2137 howto = ppc_coff_howto_table + r_type;
2138 break;
2139 }
2140
2141 return howto;
2142 }
2143
2144 /* a cheesy little macro to make the code a little more readable */
2145 #define HOW2MAP(bfd_rtype,ppc_rtype) \
2146 case bfd_rtype: return &ppc_coff_howto_table[ppc_rtype]
2147
2148 static reloc_howto_type *ppc_coff_reloc_type_lookup
2149 PARAMS ((bfd *, bfd_reloc_code_real_type));
2150
2151 static reloc_howto_type *
2152 ppc_coff_reloc_type_lookup (abfd, code)
2153 bfd *abfd ATTRIBUTE_UNUSED;
2154 bfd_reloc_code_real_type code;
2155 {
2156 switch (code)
2157 {
2158 HOW2MAP(BFD_RELOC_32_GOTOFF, IMAGE_REL_PPC_IMGLUE);
2159 HOW2MAP(BFD_RELOC_16_GOT_PCREL, IMAGE_REL_PPC_IFGLUE);
2160 HOW2MAP(BFD_RELOC_16, IMAGE_REL_PPC_ADDR16);
2161 HOW2MAP(BFD_RELOC_PPC_B26, IMAGE_REL_PPC_REL24);
2162 HOW2MAP(BFD_RELOC_PPC_BA26, IMAGE_REL_PPC_ADDR24);
2163 HOW2MAP(BFD_RELOC_PPC_TOC16, IMAGE_REL_PPC_TOCREL16);
2164 HOW2MAP(BFD_RELOC_16_GOTOFF, IMAGE_REL_PPC_TOCREL16_DEFN);
2165 HOW2MAP(BFD_RELOC_32, IMAGE_REL_PPC_ADDR32);
2166 HOW2MAP(BFD_RELOC_RVA, IMAGE_REL_PPC_ADDR32NB);
2167 default:
2168 return NULL;
2169 }
2170 /*NOTREACHED*/
2171 }
2172
2173 #undef HOW2MAP
2174 \f
2175 /* Tailor coffcode.h -- macro heaven. */
2176
2177 #define RTYPE2HOWTO(cache_ptr, dst) ppc_coff_rtype2howto (cache_ptr, dst)
2178
2179 /* We use the special COFF backend linker, with our own special touch. */
2180
2181 #define coff_bfd_reloc_type_lookup ppc_coff_reloc_type_lookup
2182 #define coff_rtype_to_howto coff_ppc_rtype_to_howto
2183 #define coff_relocate_section coff_ppc_relocate_section
2184 #define coff_bfd_final_link ppc_bfd_coff_final_link
2185
2186 #ifndef COFF_IMAGE_WITH_PE
2187 /* FIXME: This no longer works. */
2188 #if 0
2189 #define coff_swap_sym_in_hook ppc_coff_swap_sym_in_hook
2190 #endif
2191 #endif
2192
2193 #define SELECT_RELOC(internal, howto) {internal.r_type=howto->type;}
2194
2195 #define COFF_PAGE_SIZE 0x1000
2196
2197 /* FIXME: This controls some code that used to be in peicode.h and is
2198 now in peigen.c. It will not control the code in peigen.c. If
2199 anybody wants to get this working, you will need to fix that. */
2200 #define POWERPC_LE_PE
2201
2202 #define COFF_SECTION_ALIGNMENT_ENTRIES \
2203 { COFF_SECTION_NAME_EXACT_MATCH (".idata$2"), \
2204 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
2205 { COFF_SECTION_NAME_EXACT_MATCH (".idata$3"), \
2206 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
2207 { COFF_SECTION_NAME_EXACT_MATCH (".idata$4"), \
2208 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
2209 { COFF_SECTION_NAME_EXACT_MATCH (".idata$5"), \
2210 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
2211 { COFF_SECTION_NAME_EXACT_MATCH (".idata$6"), \
2212 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 1 }, \
2213 { COFF_SECTION_NAME_EXACT_MATCH (".reloc"), \
2214 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 1 }
2215
2216 #include "coffcode.h"
2217 \f
2218 #ifndef COFF_IMAGE_WITH_PE
2219 /* FIXME: This no longer works. */
2220 #if 0
2221 /* FIXME:
2222 What we're trying to do here is allocate a toc section (early), and attach
2223 it to the last bfd to be processed. This avoids the problem of having a toc
2224 written out before all files have been processed. This code allocates
2225 a toc section for every file, and records the last one seen. There are
2226 at least two problems with this approach:
2227 1. We allocate whole bunches of toc sections that are ignored, but at
2228 at least we will not allocate a toc if no .toc is present.
2229 2. It's not clear to me that being the last bfd read necessarily means
2230 that you are the last bfd closed.
2231 3. Doing it on a "swap in" hook depends on when the "swap in" is called,
2232 and how often, etc. It's not clear to me that there isn't a hole here.
2233 */
2234 static void ppc_coff_swap_sym_in_hook PARAMS ((bfd *, PTR, PTR));
2235
2236 static void
2237 ppc_coff_swap_sym_in_hook (abfd, ext1, in1)
2238 bfd *abfd;
2239 PTR ext1 ATTRIBUTE_UNUSED;
2240 PTR in1;
2241 {
2242 struct internal_syment *in = (struct internal_syment *)in1;
2243
2244 if (bfd_of_toc_owner != 0) /* we already have a toc, so go home */
2245 return;
2246
2247 if (strcmp(in->_n._n_name, ".toc") == 0)
2248 {
2249 flagword flags;
2250 register asection *s;
2251
2252 s = bfd_get_section_by_name ( abfd , TOC_SECTION_NAME);
2253 if (s != NULL)
2254 {
2255 return;
2256 }
2257
2258 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY ;
2259
2260 s = bfd_make_section (abfd, TOC_SECTION_NAME);
2261
2262 if (s == NULL
2263 || !bfd_set_section_flags (abfd, s, flags)
2264 || !bfd_set_section_alignment (abfd, s, 2))
2265 {
2266 /* FIXME: set appropriate bfd error */
2267 abort ();
2268 }
2269
2270 /* save the bfd for later allocation */
2271 bfd_of_toc_owner = abfd;
2272 }
2273
2274 return;
2275 }
2276 #endif
2277 #endif
2278
2279 #ifndef COFF_IMAGE_WITH_PE
2280
2281 static boolean ppc_do_last PARAMS ((bfd *));
2282 static bfd *ppc_get_last PARAMS ((void));
2283
2284 static boolean
2285 ppc_do_last (abfd)
2286 bfd *abfd;
2287 {
2288 if (abfd == bfd_of_toc_owner)
2289 return true;
2290 else
2291 return false;
2292 }
2293
2294 static bfd *
2295 ppc_get_last()
2296 {
2297 return bfd_of_toc_owner;
2298 }
2299
2300 /* this piece of machinery exists only to guarantee that the bfd that holds
2301 the toc section is written last.
2302
2303 This does depend on bfd_make_section attaching a new section to the
2304 end of the section list for the bfd.
2305
2306 This is otherwise intended to be functionally the same as
2307 cofflink.c:_bfd_coff_final_link(). It is specifically different only
2308 where the POWERPC_LE_PE macro modifies the code. It is left in as a
2309 precise form of comment. krk@cygnus.com
2310 */
2311
2312 /* Do the final link step. */
2313
2314 boolean
2315 ppc_bfd_coff_final_link (abfd, info)
2316 bfd *abfd;
2317 struct bfd_link_info *info;
2318 {
2319 bfd_size_type symesz;
2320 struct coff_final_link_info finfo;
2321 boolean debug_merge_allocated;
2322 asection *o;
2323 struct bfd_link_order *p;
2324 bfd_size_type max_sym_count;
2325 bfd_size_type max_lineno_count;
2326 bfd_size_type max_reloc_count;
2327 bfd_size_type max_output_reloc_count;
2328 bfd_size_type max_contents_size;
2329 file_ptr rel_filepos;
2330 unsigned int relsz;
2331 file_ptr line_filepos;
2332 unsigned int linesz;
2333 bfd *sub;
2334 bfd_byte *external_relocs = NULL;
2335 char strbuf[STRING_SIZE_SIZE];
2336 bfd_size_type amt;
2337
2338 symesz = bfd_coff_symesz (abfd);
2339
2340 finfo.info = info;
2341 finfo.output_bfd = abfd;
2342 finfo.strtab = NULL;
2343 finfo.section_info = NULL;
2344 finfo.last_file_index = -1;
2345 finfo.last_bf_index = -1;
2346 finfo.internal_syms = NULL;
2347 finfo.sec_ptrs = NULL;
2348 finfo.sym_indices = NULL;
2349 finfo.outsyms = NULL;
2350 finfo.linenos = NULL;
2351 finfo.contents = NULL;
2352 finfo.external_relocs = NULL;
2353 finfo.internal_relocs = NULL;
2354 debug_merge_allocated = false;
2355
2356 coff_data (abfd)->link_info = info;
2357
2358 finfo.strtab = _bfd_stringtab_init ();
2359 if (finfo.strtab == NULL)
2360 goto error_return;
2361
2362 if (! coff_debug_merge_hash_table_init (&finfo.debug_merge))
2363 goto error_return;
2364 debug_merge_allocated = true;
2365
2366 /* Compute the file positions for all the sections. */
2367 if (! abfd->output_has_begun)
2368 {
2369 if (! bfd_coff_compute_section_file_positions (abfd))
2370 return false;
2371 }
2372
2373 /* Count the line numbers and relocation entries required for the
2374 output file. Set the file positions for the relocs. */
2375 rel_filepos = obj_relocbase (abfd);
2376 relsz = bfd_coff_relsz (abfd);
2377 max_contents_size = 0;
2378 max_lineno_count = 0;
2379 max_reloc_count = 0;
2380
2381 for (o = abfd->sections; o != NULL; o = o->next)
2382 {
2383 o->reloc_count = 0;
2384 o->lineno_count = 0;
2385 for (p = o->link_order_head; p != NULL; p = p->next)
2386 {
2387
2388 if (p->type == bfd_indirect_link_order)
2389 {
2390 asection *sec;
2391
2392 sec = p->u.indirect.section;
2393
2394 /* Mark all sections which are to be included in the
2395 link. This will normally be every section. We need
2396 to do this so that we can identify any sections which
2397 the linker has decided to not include. */
2398 sec->linker_mark = true;
2399
2400 if (info->strip == strip_none
2401 || info->strip == strip_some)
2402 o->lineno_count += sec->lineno_count;
2403
2404 if (info->relocateable)
2405 o->reloc_count += sec->reloc_count;
2406
2407 if (sec->_raw_size > max_contents_size)
2408 max_contents_size = sec->_raw_size;
2409 if (sec->lineno_count > max_lineno_count)
2410 max_lineno_count = sec->lineno_count;
2411 if (sec->reloc_count > max_reloc_count)
2412 max_reloc_count = sec->reloc_count;
2413 }
2414 else if (info->relocateable
2415 && (p->type == bfd_section_reloc_link_order
2416 || p->type == bfd_symbol_reloc_link_order))
2417 ++o->reloc_count;
2418 }
2419 if (o->reloc_count == 0)
2420 o->rel_filepos = 0;
2421 else
2422 {
2423 o->flags |= SEC_RELOC;
2424 o->rel_filepos = rel_filepos;
2425 rel_filepos += o->reloc_count * relsz;
2426 }
2427 }
2428
2429 /* If doing a relocateable link, allocate space for the pointers we
2430 need to keep. */
2431 if (info->relocateable)
2432 {
2433 unsigned int i;
2434
2435 /* We use section_count + 1, rather than section_count, because
2436 the target_index fields are 1 based. */
2437 amt = abfd->section_count + 1;
2438 amt *= sizeof (struct coff_link_section_info);
2439 finfo.section_info = (struct coff_link_section_info *) bfd_malloc (amt);
2440 if (finfo.section_info == NULL)
2441 goto error_return;
2442 for (i = 0; i <= abfd->section_count; i++)
2443 {
2444 finfo.section_info[i].relocs = NULL;
2445 finfo.section_info[i].rel_hashes = NULL;
2446 }
2447 }
2448
2449 /* We now know the size of the relocs, so we can determine the file
2450 positions of the line numbers. */
2451 line_filepos = rel_filepos;
2452 linesz = bfd_coff_linesz (abfd);
2453 max_output_reloc_count = 0;
2454 for (o = abfd->sections; o != NULL; o = o->next)
2455 {
2456 if (o->lineno_count == 0)
2457 o->line_filepos = 0;
2458 else
2459 {
2460 o->line_filepos = line_filepos;
2461 line_filepos += o->lineno_count * linesz;
2462 }
2463
2464 if (o->reloc_count != 0)
2465 {
2466 /* We don't know the indices of global symbols until we have
2467 written out all the local symbols. For each section in
2468 the output file, we keep an array of pointers to hash
2469 table entries. Each entry in the array corresponds to a
2470 reloc. When we find a reloc against a global symbol, we
2471 set the corresponding entry in this array so that we can
2472 fix up the symbol index after we have written out all the
2473 local symbols.
2474
2475 Because of this problem, we also keep the relocs in
2476 memory until the end of the link. This wastes memory,
2477 but only when doing a relocateable link, which is not the
2478 common case. */
2479 BFD_ASSERT (info->relocateable);
2480 amt = o->reloc_count;
2481 amt *= sizeof (struct internal_reloc);
2482 finfo.section_info[o->target_index].relocs =
2483 (struct internal_reloc *) bfd_malloc (amt);
2484 amt = o->reloc_count;
2485 amt *= sizeof (struct coff_link_hash_entry *);
2486 finfo.section_info[o->target_index].rel_hashes =
2487 (struct coff_link_hash_entry **) bfd_malloc (amt);
2488 if (finfo.section_info[o->target_index].relocs == NULL
2489 || finfo.section_info[o->target_index].rel_hashes == NULL)
2490 goto error_return;
2491
2492 if (o->reloc_count > max_output_reloc_count)
2493 max_output_reloc_count = o->reloc_count;
2494 }
2495
2496 /* Reset the reloc and lineno counts, so that we can use them to
2497 count the number of entries we have output so far. */
2498 o->reloc_count = 0;
2499 o->lineno_count = 0;
2500 }
2501
2502 obj_sym_filepos (abfd) = line_filepos;
2503
2504 /* Figure out the largest number of symbols in an input BFD. Take
2505 the opportunity to clear the output_has_begun fields of all the
2506 input BFD's. */
2507 max_sym_count = 0;
2508 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
2509 {
2510 bfd_size_type sz;
2511
2512 sub->output_has_begun = false;
2513 sz = obj_raw_syment_count (sub);
2514 if (sz > max_sym_count)
2515 max_sym_count = sz;
2516 }
2517
2518 /* Allocate some buffers used while linking. */
2519 amt = max_sym_count * sizeof (struct internal_syment);
2520 finfo.internal_syms = (struct internal_syment *) bfd_malloc (amt);
2521 amt = max_sym_count * sizeof (asection *);
2522 finfo.sec_ptrs = (asection **) bfd_malloc (amt);
2523 amt = max_sym_count * sizeof (long);
2524 finfo.sym_indices = (long *) bfd_malloc (amt);
2525 amt = (max_sym_count + 1) * symesz;
2526 finfo.outsyms = (bfd_byte *) bfd_malloc (amt);
2527 amt = max_lineno_count * bfd_coff_linesz (abfd);
2528 finfo.linenos = (bfd_byte *) bfd_malloc (amt);
2529 finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size);
2530 finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz);
2531 if (! info->relocateable)
2532 {
2533 amt = max_reloc_count * sizeof (struct internal_reloc);
2534 finfo.internal_relocs = (struct internal_reloc *) bfd_malloc (amt);
2535 }
2536 if ((finfo.internal_syms == NULL && max_sym_count > 0)
2537 || (finfo.sec_ptrs == NULL && max_sym_count > 0)
2538 || (finfo.sym_indices == NULL && max_sym_count > 0)
2539 || finfo.outsyms == NULL
2540 || (finfo.linenos == NULL && max_lineno_count > 0)
2541 || (finfo.contents == NULL && max_contents_size > 0)
2542 || (finfo.external_relocs == NULL && max_reloc_count > 0)
2543 || (! info->relocateable
2544 && finfo.internal_relocs == NULL
2545 && max_reloc_count > 0))
2546 goto error_return;
2547
2548 /* We now know the position of everything in the file, except that
2549 we don't know the size of the symbol table and therefore we don't
2550 know where the string table starts. We just build the string
2551 table in memory as we go along. We process all the relocations
2552 for a single input file at once. */
2553 obj_raw_syment_count (abfd) = 0;
2554
2555 if (coff_backend_info (abfd)->_bfd_coff_start_final_link)
2556 {
2557 if (! bfd_coff_start_final_link (abfd, info))
2558 goto error_return;
2559 }
2560
2561 for (o = abfd->sections; o != NULL; o = o->next)
2562 {
2563 for (p = o->link_order_head; p != NULL; p = p->next)
2564 {
2565 if (p->type == bfd_indirect_link_order
2566 && (bfd_get_flavour (p->u.indirect.section->owner)
2567 == bfd_target_coff_flavour))
2568 {
2569 sub = p->u.indirect.section->owner;
2570 #ifdef POWERPC_LE_PE
2571 if (! sub->output_has_begun && !ppc_do_last(sub))
2572 #else
2573 if (! sub->output_has_begun)
2574 #endif
2575 {
2576 if (! _bfd_coff_link_input_bfd (&finfo, sub))
2577 goto error_return;
2578 sub->output_has_begun = true;
2579 }
2580 }
2581 else if (p->type == bfd_section_reloc_link_order
2582 || p->type == bfd_symbol_reloc_link_order)
2583 {
2584 if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p))
2585 goto error_return;
2586 }
2587 else
2588 {
2589 if (! _bfd_default_link_order (abfd, info, o, p))
2590 goto error_return;
2591 }
2592 }
2593 }
2594
2595 #ifdef POWERPC_LE_PE
2596 {
2597 bfd* last_one = ppc_get_last();
2598 if (last_one)
2599 {
2600 if (! _bfd_coff_link_input_bfd (&finfo, last_one))
2601 goto error_return;
2602 }
2603 last_one->output_has_begun = true;
2604 }
2605 #endif
2606
2607 /* Free up the buffers used by _bfd_coff_link_input_bfd. */
2608
2609 coff_debug_merge_hash_table_free (&finfo.debug_merge);
2610 debug_merge_allocated = false;
2611
2612 if (finfo.internal_syms != NULL)
2613 {
2614 free (finfo.internal_syms);
2615 finfo.internal_syms = NULL;
2616 }
2617 if (finfo.sec_ptrs != NULL)
2618 {
2619 free (finfo.sec_ptrs);
2620 finfo.sec_ptrs = NULL;
2621 }
2622 if (finfo.sym_indices != NULL)
2623 {
2624 free (finfo.sym_indices);
2625 finfo.sym_indices = NULL;
2626 }
2627 if (finfo.linenos != NULL)
2628 {
2629 free (finfo.linenos);
2630 finfo.linenos = NULL;
2631 }
2632 if (finfo.contents != NULL)
2633 {
2634 free (finfo.contents);
2635 finfo.contents = NULL;
2636 }
2637 if (finfo.external_relocs != NULL)
2638 {
2639 free (finfo.external_relocs);
2640 finfo.external_relocs = NULL;
2641 }
2642 if (finfo.internal_relocs != NULL)
2643 {
2644 free (finfo.internal_relocs);
2645 finfo.internal_relocs = NULL;
2646 }
2647
2648 /* The value of the last C_FILE symbol is supposed to be the symbol
2649 index of the first external symbol. Write it out again if
2650 necessary. */
2651 if (finfo.last_file_index != -1
2652 && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd))
2653 {
2654 file_ptr pos;
2655
2656 finfo.last_file.n_value = obj_raw_syment_count (abfd);
2657 bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file,
2658 (PTR) finfo.outsyms);
2659 pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
2660 if (bfd_seek (abfd, pos, SEEK_SET) != 0
2661 || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
2662 return false;
2663 }
2664
2665 /* Write out the global symbols. */
2666 finfo.failed = false;
2667 coff_link_hash_traverse (coff_hash_table (info), _bfd_coff_write_global_sym,
2668 (PTR) &finfo);
2669 if (finfo.failed)
2670 goto error_return;
2671
2672 /* The outsyms buffer is used by _bfd_coff_write_global_sym. */
2673 if (finfo.outsyms != NULL)
2674 {
2675 free (finfo.outsyms);
2676 finfo.outsyms = NULL;
2677 }
2678
2679 if (info->relocateable)
2680 {
2681 /* Now that we have written out all the global symbols, we know
2682 the symbol indices to use for relocs against them, and we can
2683 finally write out the relocs. */
2684 amt = max_output_reloc_count * relsz;
2685 external_relocs = (bfd_byte *) bfd_malloc (amt);
2686 if (external_relocs == NULL)
2687 goto error_return;
2688
2689 for (o = abfd->sections; o != NULL; o = o->next)
2690 {
2691 struct internal_reloc *irel;
2692 struct internal_reloc *irelend;
2693 struct coff_link_hash_entry **rel_hash;
2694 bfd_byte *erel;
2695
2696 if (o->reloc_count == 0)
2697 continue;
2698
2699 irel = finfo.section_info[o->target_index].relocs;
2700 irelend = irel + o->reloc_count;
2701 rel_hash = finfo.section_info[o->target_index].rel_hashes;
2702 erel = external_relocs;
2703 for (; irel < irelend; irel++, rel_hash++, erel += relsz)
2704 {
2705 if (*rel_hash != NULL)
2706 {
2707 BFD_ASSERT ((*rel_hash)->indx >= 0);
2708 irel->r_symndx = (*rel_hash)->indx;
2709 }
2710 bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel);
2711 }
2712
2713 amt = relsz * o->reloc_count;
2714 if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0
2715 || bfd_bwrite ((PTR) external_relocs, amt, abfd) != amt)
2716 goto error_return;
2717 }
2718
2719 free (external_relocs);
2720 external_relocs = NULL;
2721 }
2722
2723 /* Free up the section information. */
2724 if (finfo.section_info != NULL)
2725 {
2726 unsigned int i;
2727
2728 for (i = 0; i < abfd->section_count; i++)
2729 {
2730 if (finfo.section_info[i].relocs != NULL)
2731 free (finfo.section_info[i].relocs);
2732 if (finfo.section_info[i].rel_hashes != NULL)
2733 free (finfo.section_info[i].rel_hashes);
2734 }
2735 free (finfo.section_info);
2736 finfo.section_info = NULL;
2737 }
2738
2739 /* If we have optimized stabs strings, output them. */
2740 if (coff_hash_table (info)->stab_info != NULL)
2741 {
2742 if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info))
2743 return false;
2744 }
2745
2746 /* Write out the string table. */
2747 if (obj_raw_syment_count (abfd) != 0)
2748 {
2749 file_ptr pos;
2750
2751 pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
2752 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
2753 return false;
2754
2755 #if STRING_SIZE_SIZE == 4
2756 H_PUT_32 (abfd,
2757 _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
2758 strbuf);
2759 #else
2760 #error Change H_PUT_32 above
2761 #endif
2762
2763 if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd)
2764 != STRING_SIZE_SIZE)
2765 return false;
2766
2767 if (! _bfd_stringtab_emit (abfd, finfo.strtab))
2768 return false;
2769 }
2770
2771 _bfd_stringtab_free (finfo.strtab);
2772
2773 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
2774 not try to write out the symbols. */
2775 bfd_get_symcount (abfd) = 0;
2776
2777 return true;
2778
2779 error_return:
2780 if (debug_merge_allocated)
2781 coff_debug_merge_hash_table_free (&finfo.debug_merge);
2782 if (finfo.strtab != NULL)
2783 _bfd_stringtab_free (finfo.strtab);
2784 if (finfo.section_info != NULL)
2785 {
2786 unsigned int i;
2787
2788 for (i = 0; i < abfd->section_count; i++)
2789 {
2790 if (finfo.section_info[i].relocs != NULL)
2791 free (finfo.section_info[i].relocs);
2792 if (finfo.section_info[i].rel_hashes != NULL)
2793 free (finfo.section_info[i].rel_hashes);
2794 }
2795 free (finfo.section_info);
2796 }
2797 if (finfo.internal_syms != NULL)
2798 free (finfo.internal_syms);
2799 if (finfo.sec_ptrs != NULL)
2800 free (finfo.sec_ptrs);
2801 if (finfo.sym_indices != NULL)
2802 free (finfo.sym_indices);
2803 if (finfo.outsyms != NULL)
2804 free (finfo.outsyms);
2805 if (finfo.linenos != NULL)
2806 free (finfo.linenos);
2807 if (finfo.contents != NULL)
2808 free (finfo.contents);
2809 if (finfo.external_relocs != NULL)
2810 free (finfo.external_relocs);
2811 if (finfo.internal_relocs != NULL)
2812 free (finfo.internal_relocs);
2813 if (external_relocs != NULL)
2814 free (external_relocs);
2815 return false;
2816 }
2817 #endif
2818 \f
2819 /* Forward declaration for use by alternative_target field. */
2820 #ifdef TARGET_BIG_SYM
2821 extern const bfd_target TARGET_BIG_SYM;
2822 #endif
2823
2824 /* The transfer vectors that lead the outside world to all of the above. */
2825
2826 #ifdef TARGET_LITTLE_SYM
2827 const bfd_target TARGET_LITTLE_SYM =
2828 {
2829 TARGET_LITTLE_NAME, /* name or coff-arm-little */
2830 bfd_target_coff_flavour,
2831 BFD_ENDIAN_LITTLE, /* data byte order is little */
2832 BFD_ENDIAN_LITTLE, /* header byte order is little */
2833
2834 (HAS_RELOC | EXEC_P | /* FIXME: object flags */
2835 HAS_LINENO | HAS_DEBUG |
2836 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
2837
2838 #ifndef COFF_WITH_PE
2839 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
2840 #else
2841 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
2842 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
2843 #endif
2844
2845 0, /* leading char */
2846 '/', /* ar_pad_char */
2847 15, /* ar_max_namelen??? FIXMEmgo */
2848
2849 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
2850 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
2851 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
2852
2853 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
2854 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
2855 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
2856
2857 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
2858 bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p },
2859 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
2860 bfd_false},
2861 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
2862 _bfd_write_archive_contents, bfd_false},
2863
2864 BFD_JUMP_TABLE_GENERIC (coff),
2865 BFD_JUMP_TABLE_COPY (coff),
2866 BFD_JUMP_TABLE_CORE (_bfd_nocore),
2867 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
2868 BFD_JUMP_TABLE_SYMBOLS (coff),
2869 BFD_JUMP_TABLE_RELOCS (coff),
2870 BFD_JUMP_TABLE_WRITE (coff),
2871 BFD_JUMP_TABLE_LINK (coff),
2872 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
2873
2874 /* Alternative_target. */
2875 #ifdef TARGET_BIG_SYM
2876 & TARGET_BIG_SYM,
2877 #else
2878 NULL,
2879 #endif
2880
2881 COFF_SWAP_TABLE
2882 };
2883 #endif
2884
2885 #ifdef TARGET_BIG_SYM
2886 const bfd_target TARGET_BIG_SYM =
2887 {
2888 TARGET_BIG_NAME,
2889 bfd_target_coff_flavour,
2890 BFD_ENDIAN_BIG, /* data byte order is big */
2891 BFD_ENDIAN_BIG, /* header byte order is big */
2892
2893 (HAS_RELOC | EXEC_P | /* FIXME: object flags */
2894 HAS_LINENO | HAS_DEBUG |
2895 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
2896
2897 #ifndef COFF_WITH_PE
2898 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
2899 #else
2900 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
2901 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
2902 #endif
2903
2904 0, /* leading char */
2905 '/', /* ar_pad_char */
2906 15, /* ar_max_namelen??? FIXMEmgo */
2907
2908 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
2909 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
2910 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
2911
2912 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
2913 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
2914 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
2915
2916 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
2917 bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p },
2918 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
2919 bfd_false},
2920 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
2921 _bfd_write_archive_contents, bfd_false},
2922
2923 BFD_JUMP_TABLE_GENERIC (coff),
2924 BFD_JUMP_TABLE_COPY (coff),
2925 BFD_JUMP_TABLE_CORE (_bfd_nocore),
2926 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
2927 BFD_JUMP_TABLE_SYMBOLS (coff),
2928 BFD_JUMP_TABLE_RELOCS (coff),
2929 BFD_JUMP_TABLE_WRITE (coff),
2930 BFD_JUMP_TABLE_LINK (coff),
2931 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
2932
2933 /* Alternative_target. */
2934 #ifdef TARGET_LITTLE_SYM
2935 & TARGET_LITTLE_SYM,
2936 #else
2937 NULL,
2938 #endif
2939
2940 COFF_SWAP_TABLE
2941 };
2942
2943 #endif
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