source: trunk/src/binutils/bfd/aout-tic30.c@ 73

Last change on this file since 73 was 10, checked in by bird, 23 years ago

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1/* BFD back-end for TMS320C30 a.out binaries.
2 Copyright 1998, 1999, 2000 Free Software Foundation, Inc.
3 Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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
20 02111-1307, USA. */
21
22#define TARGET_IS_BIG_ENDIAN_P
23#define N_HEADER_IN_TEXT(x) 1
24#define BYTES_IN_WORD 4
25#define TEXT_START_ADDR 1024
26#define TARGET_PAGE_SIZE 128
27#define SEGMENT_SIZE TARGET_PAGE_SIZE
28#define DEFAULT_ARCH bfd_arch_tic30
29#define ARCH_SIZE 32
30
31#define MY(OP) CAT(tic30_aout_,OP)
32#define TARGETNAME "a.out-tic30"
33#define NAME(x,y) CAT3(tic30_aout,_32_,y)
34
35#include "bfd.h"
36#include "sysdep.h"
37#include "libaout.h"
38
39#include "aout/aout64.h"
40#include "aout/stab_gnu.h"
41#include "aout/ar.h"
42
43static bfd_reloc_status_type tic30_aout_fix_16
44 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
45static bfd_reloc_status_type tic30_aout_fix_32
46 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
47static bfd_reloc_status_type tic30_aout_fix_pcrel_16
48 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
49static reloc_howto_type *tic30_aout_reloc_howto
50 PARAMS ((bfd *, struct reloc_std_external *, int *, int *, int *));
51static bfd_reloc_status_type tic30_aout_relocate_contents
52 PARAMS ((reloc_howto_type *, bfd *, bfd_vma, bfd_byte *));
53static bfd_reloc_status_type tic30_aout_final_link_relocate
54 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma,
55 bfd_vma, bfd_vma));
56static const bfd_target *tic30_aout_object_p PARAMS ((bfd *));
57static boolean tic30_aout_write_object_contents PARAMS ((bfd *));
58static boolean tic30_aout_set_sizes PARAMS ((bfd *));
59
60#define MY_reloc_howto(BFD,REL,IN,EX,PC) tic30_aout_reloc_howto(BFD,REL,&IN,&EX,&PC)
61#define MY_final_link_relocate tic30_aout_final_link_relocate
62#define MY_object_p tic30_aout_object_p
63#define MY_mkobject NAME(aout,mkobject)
64#define MY_write_object_contents tic30_aout_write_object_contents
65#define MY_set_sizes tic30_aout_set_sizes
66
67#ifndef MY_exec_hdr_flags
68#define MY_exec_hdr_flags 1
69#endif
70
71#ifndef MY_backend_data
72
73#ifndef MY_zmagic_contiguous
74#define MY_zmagic_contiguous 0
75#endif
76#ifndef MY_text_includes_header
77#define MY_text_includes_header 0
78#endif
79#ifndef MY_entry_is_text_address
80#define MY_entry_is_text_address 0
81#endif
82#ifndef MY_exec_header_not_counted
83#define MY_exec_header_not_counted 1
84#endif
85#ifndef MY_add_dynamic_symbols
86#define MY_add_dynamic_symbols 0
87#endif
88#ifndef MY_add_one_symbol
89#define MY_add_one_symbol 0
90#endif
91#ifndef MY_link_dynamic_object
92#define MY_link_dynamic_object 0
93#endif
94#ifndef MY_write_dynamic_symbol
95#define MY_write_dynamic_symbol 0
96#endif
97#ifndef MY_check_dynamic_reloc
98#define MY_check_dynamic_reloc 0
99#endif
100#ifndef MY_finish_dynamic_link
101#define MY_finish_dynamic_link 0
102#endif
103
104static CONST struct aout_backend_data tic30_aout_backend_data =
105{
106 MY_zmagic_contiguous,
107 MY_text_includes_header,
108 MY_entry_is_text_address,
109 MY_exec_hdr_flags,
110 0, /* text vma? */
111 MY_set_sizes,
112 MY_exec_header_not_counted,
113 MY_add_dynamic_symbols,
114 MY_add_one_symbol,
115 MY_link_dynamic_object,
116 MY_write_dynamic_symbol,
117 MY_check_dynamic_reloc,
118 MY_finish_dynamic_link
119};
120#define MY_backend_data &tic30_aout_backend_data
121#endif
122
123/* FIXME: This is wrong. aoutx.h should really only be included by
124 aout32.c. */
125
126#include "aoutx.h"
127
128/* This table lists the relocation types for the TMS320C30. There are
129 only a few relocations required, and all must be divided by 4 (>>
130 2) to get the 32-bit addresses in the format the TMS320C30 likes
131 it. */
132reloc_howto_type tic30_aout_howto_table[] =
133{
134 EMPTY_HOWTO (-1),
135 HOWTO (1, 2, 1, 16, false, 0, 0, tic30_aout_fix_16,
136 "16", false, 0x0000FFFF, 0x0000FFFF, false),
137 HOWTO (2, 2, 2, 24, false, 0, complain_overflow_bitfield, NULL,
138 "24", false, 0x00FFFFFF, 0x00FFFFFF, false),
139 HOWTO (3, 18, 3, 24, false, 0, complain_overflow_bitfield, NULL,
140 "LDP", false, 0x00FF0000, 0x000000FF, false),
141 HOWTO (4, 2, 4, 32, false, 0, complain_overflow_bitfield, tic30_aout_fix_32,
142 "32", false, 0xFFFFFFFF, 0xFFFFFFFF, false),
143 HOWTO (5, 2, 1, 16, true, 0, complain_overflow_signed,
144 tic30_aout_fix_pcrel_16, "PCREL", true, 0x0000FFFF, 0x0000FFFF, true),
145 EMPTY_HOWTO (-1),
146 EMPTY_HOWTO (-1),
147 EMPTY_HOWTO (-1),
148 EMPTY_HOWTO (-1),
149 EMPTY_HOWTO (-1)
150};
151
152extern reloc_howto_type *NAME (aout, reloc_type_lookup) ();
153
154reloc_howto_type *
155tic30_aout_reloc_type_lookup (abfd, code)
156 bfd *abfd ATTRIBUTE_UNUSED;
157 bfd_reloc_code_real_type code;
158{
159 switch (code)
160 {
161 case BFD_RELOC_8:
162 case BFD_RELOC_TIC30_LDP:
163 return &tic30_aout_howto_table[3];
164 case BFD_RELOC_16:
165 return &tic30_aout_howto_table[1];
166 case BFD_RELOC_24:
167 return &tic30_aout_howto_table[2];
168 case BFD_RELOC_16_PCREL:
169 return &tic30_aout_howto_table[5];
170 case BFD_RELOC_32:
171 return &tic30_aout_howto_table[4];
172 default:
173 return (reloc_howto_type *) NULL;
174 }
175}
176
177static reloc_howto_type *
178tic30_aout_reloc_howto (abfd, relocs, r_index, r_extern, r_pcrel)
179 bfd *abfd;
180 struct reloc_std_external *relocs;
181 int *r_index;
182 int *r_extern;
183 int *r_pcrel;
184{
185 unsigned int r_length;
186 unsigned int r_pcrel_done;
187 int index;
188
189 *r_pcrel = 0;
190 if (bfd_header_big_endian (abfd))
191 {
192 *r_index = ((relocs->r_index[0] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[2]);
193 *r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
194 r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
195 r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) >> RELOC_STD_BITS_LENGTH_SH_BIG);
196 }
197 else
198 {
199 *r_index = ((relocs->r_index[2] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[0]);
200 *r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
201 r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
202 r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
203 }
204 index = r_length + 4 * r_pcrel_done;
205 return tic30_aout_howto_table + index;
206}
207
208/* This function is used as a callback for 16-bit relocs. This is
209 required for relocations between segments. A line in aoutx.h
210 requires that any relocations for the data section should point to
211 the end of the aligned text section, plus an offset. By default,
212 this does not happen, therefore this function takes care of
213 that. */
214
215static bfd_reloc_status_type
216tic30_aout_fix_16 (abfd, reloc_entry, symbol, data, input_section, output_bfd, error_message)
217 bfd *abfd;
218 arelent *reloc_entry;
219 asymbol *symbol;
220 PTR data;
221 asection *input_section ATTRIBUTE_UNUSED;
222 bfd *output_bfd;
223 char **error_message ATTRIBUTE_UNUSED;
224{
225 bfd_vma relocation;
226
227 /* Make sure that the symbol's section is defined. */
228 if (symbol->section == &bfd_und_section && (symbol->flags & BSF_WEAK) == 0)
229 return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
230 /* Get the size of the input section and turn it into the TMS320C30
231 32-bit address format. */
232 relocation = (symbol->section->vma >> 2);
233 relocation += bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
234 bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
235 return bfd_reloc_ok;
236}
237
238/* This function does the same thing as tic30_aout_fix_16 except for 32
239 bit relocations. */
240
241static bfd_reloc_status_type
242tic30_aout_fix_32 (abfd, reloc_entry, symbol, data, input_section,
243 output_bfd, error_message)
244 bfd *abfd;
245 arelent *reloc_entry;
246 asymbol *symbol;
247 PTR data;
248 asection *input_section ATTRIBUTE_UNUSED;
249 bfd *output_bfd;
250 char **error_message ATTRIBUTE_UNUSED;
251{
252 bfd_vma relocation;
253
254 /* Make sure that the symbol's section is defined. */
255 if (symbol->section == &bfd_und_section && (symbol->flags & BSF_WEAK) == 0)
256 return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
257 /* Get the size of the input section and turn it into the TMS320C30
258 32-bit address format. */
259 relocation = (symbol->section->vma >> 2);
260 relocation += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
261 bfd_put_32 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
262 return bfd_reloc_ok;
263}
264
265/* This function is used to work out pc-relative offsets for the
266 TMS320C30. The data already placed by md_pcrel_from within gas is
267 useless for a relocation, so we just get the offset value and place
268 a version of this within the object code.
269 tic30_aout_final_link_relocate will then calculate the required
270 relocation to add on to the value in the object code. */
271
272static bfd_reloc_status_type
273tic30_aout_fix_pcrel_16 (abfd, reloc_entry, symbol, data, input_section,
274 output_bfd, error_message)
275 bfd *abfd;
276 arelent *reloc_entry;
277 asymbol *symbol ATTRIBUTE_UNUSED;
278 PTR data;
279 asection *input_section ATTRIBUTE_UNUSED;
280 bfd *output_bfd ATTRIBUTE_UNUSED;
281 char **error_message ATTRIBUTE_UNUSED;
282{
283 bfd_vma relocation = 1;
284 bfd_byte offset_data = bfd_get_8 (abfd, (bfd_byte *) data + reloc_entry->address - 1);
285
286 /* The byte before the location of the fix contains bits 23-16 of
287 the pcrel instruction. Bit 21 is set for a delayed instruction
288 which requires on offset of 3 instead of 1. */
289 if (offset_data & 0x20)
290 relocation -= 3;
291 else
292 relocation -= 1;
293 bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
294 return bfd_reloc_ok;
295}
296
297/* These macros will get 24-bit values from the bfd definition.
298 Big-endian only. */
299#define bfd_getb_24(BFD,ADDR) \
300 (bfd_get_8 (BFD, ADDR ) << 16) | \
301 (bfd_get_8 (BFD, ADDR + 1) << 8) | \
302 (bfd_get_8 (BFD, ADDR + 2) )
303
304#define bfd_putb_24(BFD,DATA,ADDR) \
305 bfd_put_8 (BFD, (bfd_byte) ((DATA >> 16) & 0xFF), ADDR ); \
306 bfd_put_8 (BFD, (bfd_byte) ((DATA >> 8) & 0xFF), ADDR + 1); \
307 bfd_put_8 (BFD, (bfd_byte) ( DATA & 0xFF), ADDR + 2)
308
309/* Set parameters about this a.out file that are machine-dependent.
310 This routine is called from some_aout_object_p just before it returns. */
311
312static const bfd_target *
313tic30_aout_callback (abfd)
314 bfd *abfd;
315{
316 struct internal_exec *execp = exec_hdr (abfd);
317 unsigned int arch_align_power;
318 unsigned long arch_align;
319
320 /* Calculate the file positions of the parts of a newly read aout header */
321 obj_textsec (abfd)->_raw_size = N_TXTSIZE (*execp);
322
323 /* The virtual memory addresses of the sections */
324 obj_textsec (abfd)->vma = N_TXTADDR (*execp);
325 obj_datasec (abfd)->vma = N_DATADDR (*execp);
326 obj_bsssec (abfd)->vma = N_BSSADDR (*execp);
327
328 obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
329 obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
330 obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;
331
332 /* The file offsets of the sections */
333 obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
334 obj_datasec (abfd)->filepos = N_DATOFF (*execp);
335
336 /* The file offsets of the relocation info */
337 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
338 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);
339
340 /* The file offsets of the string table and symbol table. */
341 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
342 obj_str_filepos (abfd) = N_STROFF (*execp);
343
344 /* Determine the architecture and machine type of the object file. */
345#ifdef SET_ARCH_MACH
346 SET_ARCH_MACH (abfd, *execp);
347#else
348 bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0);
349#endif
350
351 /* Now that we know the architecture, set the alignments of the
352 sections. This is normally done by NAME(aout,new_section_hook),
353 but when the initial sections were created the architecture had
354 not yet been set. However, for backward compatibility, we don't
355 set the alignment power any higher than as required by the size
356 of the section. */
357 arch_align_power = bfd_get_arch_info (abfd)->section_align_power;
358 arch_align = 1 << arch_align_power;
359 if ((BFD_ALIGN (obj_textsec (abfd)->_raw_size, arch_align)
360 == obj_textsec (abfd)->_raw_size)
361 && (BFD_ALIGN (obj_datasec (abfd)->_raw_size, arch_align)
362 == obj_datasec (abfd)->_raw_size)
363 && (BFD_ALIGN (obj_bsssec (abfd)->_raw_size, arch_align)
364 == obj_bsssec (abfd)->_raw_size))
365 {
366 obj_textsec (abfd)->alignment_power = arch_align_power;
367 obj_datasec (abfd)->alignment_power = arch_align_power;
368 obj_bsssec (abfd)->alignment_power = arch_align_power;
369 }
370 return abfd->xvec;
371}
372
373static bfd_reloc_status_type
374tic30_aout_final_link_relocate (howto, input_bfd, input_section, contents,
375 address, value, addend)
376 reloc_howto_type *howto;
377 bfd *input_bfd;
378 asection *input_section;
379 bfd_byte *contents;
380 bfd_vma address;
381 bfd_vma value;
382 bfd_vma addend;
383{
384 bfd_vma relocation;
385
386 if (address > input_section->_raw_size)
387 return bfd_reloc_outofrange;
388
389 relocation = value + addend;
390 if (howto->pc_relative)
391 {
392 relocation -= (input_section->output_section->vma + input_section->output_offset);
393 if (howto->pcrel_offset)
394 relocation -= address;
395 }
396 return tic30_aout_relocate_contents (howto, input_bfd, relocation,
397 contents + address);
398}
399
400bfd_reloc_status_type
401tic30_aout_relocate_contents (howto, input_bfd, relocation, location)
402 reloc_howto_type *howto;
403 bfd *input_bfd;
404 bfd_vma relocation;
405 bfd_byte *location;
406{
407 bfd_vma x;
408 boolean overflow;
409
410 if (howto->size < 0)
411 relocation = -relocation;
412
413 switch (howto->size)
414 {
415 default:
416 case 0:
417 abort ();
418 break;
419 case 1:
420 x = bfd_get_16 (input_bfd, location);
421 break;
422 case 2:
423 x = bfd_getb_24 (input_bfd, location);
424 break;
425 case 3:
426 x = bfd_get_8 (input_bfd, location);
427 break;
428 case 4:
429 x = bfd_get_32 (input_bfd, location);
430 break;
431 }
432 overflow = false;
433 if (howto->complain_on_overflow != complain_overflow_dont)
434 {
435 bfd_vma check;
436 bfd_signed_vma signed_check;
437 bfd_vma add;
438 bfd_signed_vma signed_add;
439
440 if (howto->rightshift == 0)
441 {
442 check = relocation;
443 signed_check = (bfd_signed_vma) relocation;
444 }
445 else
446 {
447 check = relocation >> howto->rightshift;
448 if ((bfd_signed_vma) relocation >= 0)
449 signed_check = check;
450 else
451 signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift)));
452 }
453 add = x & howto->src_mask;
454 signed_add = add;
455 if ((add & (((~howto->src_mask) >> 1) & howto->src_mask)) != 0)
456 signed_add -= (((~howto->src_mask) >> 1) & howto->src_mask) << 1;
457 if (howto->bitpos == 0)
458 {
459 check += add;
460 signed_check += signed_add;
461 }
462 else
463 {
464 check += add >> howto->bitpos;
465 if (signed_add >= 0)
466 signed_check += add >> howto->bitpos;
467 else
468 signed_check += ((add >> howto->bitpos) | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->bitpos)));
469 }
470 switch (howto->complain_on_overflow)
471 {
472 case complain_overflow_signed:
473 {
474 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
475 bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
476 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
477 overflow = true;
478 }
479 break;
480 case complain_overflow_unsigned:
481 {
482 bfd_vma reloc_unsigned_max = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
483 if (check > reloc_unsigned_max)
484 overflow = true;
485 }
486 break;
487 case complain_overflow_bitfield:
488 {
489 bfd_vma reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
490 if ((check & ~reloc_bits) != 0 && (((bfd_vma) signed_check & ~reloc_bits) != (-1 & ~reloc_bits)))
491 overflow = true;
492 }
493 break;
494 default:
495 abort ();
496 }
497 }
498 relocation >>= (bfd_vma) howto->rightshift;
499 relocation <<= (bfd_vma) howto->bitpos;
500 x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask));
501 switch (howto->size)
502 {
503 default:
504 case 0:
505 abort ();
506 break;
507 case 1:
508 bfd_put_16 (input_bfd, x, location);
509 break;
510 case 2:
511 bfd_putb_24 (input_bfd, x, location);
512 break;
513 case 3:
514 bfd_put_8 (input_bfd, x, location);
515 break;
516 case 4:
517 bfd_put_32 (input_bfd, x, location);
518 break;
519 }
520 return overflow ? bfd_reloc_overflow : bfd_reloc_ok;
521}
522
523/* Finish up the reading of an a.out file header */
524
525static const bfd_target *
526tic30_aout_object_p (abfd)
527 bfd *abfd;
528{
529 struct external_exec exec_bytes; /* Raw exec header from file */
530 struct internal_exec exec; /* Cleaned-up exec header */
531 const bfd_target *target;
532
533 if (bfd_read ((PTR) & exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
534 != EXEC_BYTES_SIZE)
535 {
536 if (bfd_get_error () != bfd_error_system_call)
537 bfd_set_error (bfd_error_wrong_format);
538 return 0;
539 }
540
541#ifdef SWAP_MAGIC
542 exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
543#else
544 exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
545#endif /* SWAP_MAGIC */
546
547 if (N_BADMAG (exec))
548 return 0;
549#ifdef MACHTYPE_OK
550 if (!(MACHTYPE_OK (N_MACHTYPE (exec))))
551 return 0;
552#endif
553
554 NAME (aout, swap_exec_header_in) (abfd, &exec_bytes, &exec);
555
556#ifdef SWAP_MAGIC
557 /* swap_exec_header_in read in a_info with the wrong byte order */
558 exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
559#endif /* SWAP_MAGIC */
560
561 target = NAME (aout, some_aout_object_p) (abfd, &exec, tic30_aout_callback);
562
563#ifdef ENTRY_CAN_BE_ZERO
564 /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
565 * means that it isn't obvious if EXEC_P should be set.
566 * All of the following must be true for an executable:
567 * There must be no relocations, the bfd can be neither an
568 * archive nor an archive element, and the file must be executable. */
569
570 if (exec.a_trsize + exec.a_drsize == 0
571 && bfd_get_format (abfd) == bfd_object && abfd->my_archive == NULL)
572 {
573 struct stat buf;
574#ifndef S_IXUSR
575#define S_IXUSR 0100 /* Execute by owner. */
576#endif
577 if (stat (abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
578 abfd->flags |= EXEC_P;
579 }
580#endif /* ENTRY_CAN_BE_ZERO */
581
582 return target;
583}
584
585/* Copy private section data. This actually does nothing with the
586 sections. It copies the subformat field. We copy it here, because
587 we need to know whether this is a QMAGIC file before we set the
588 section contents, and copy_private_bfd_data is not called until
589 after the section contents have been set. */
590
591static boolean
592MY_bfd_copy_private_section_data (ibfd, isec, obfd, osec)
593 bfd *ibfd;
594 asection *isec ATTRIBUTE_UNUSED;
595 bfd *obfd;
596 asection *osec ATTRIBUTE_UNUSED;
597{
598 if (bfd_get_flavour (obfd) == bfd_target_aout_flavour)
599 obj_aout_subformat (obfd) = obj_aout_subformat (ibfd);
600 return true;
601}
602
603/* Write an object file.
604 Section contents have already been written. We write the
605 file header, symbols, and relocation. */
606
607static boolean
608tic30_aout_write_object_contents (abfd)
609 bfd *abfd;
610{
611 struct external_exec exec_bytes;
612 struct internal_exec *execp = exec_hdr (abfd);
613
614 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
615
616 {
617 bfd_size_type text_size; /* dummy vars */
618 file_ptr text_end;
619 if (adata (abfd).magic == undecided_magic)
620 NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end);
621
622 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;
623 execp->a_entry = bfd_get_start_address (abfd);
624
625 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * obj_reloc_entry_size (abfd));
626 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * obj_reloc_entry_size (abfd));
627 NAME (aout, swap_exec_header_out) (abfd, execp, &exec_bytes);
628
629 if (adata (abfd).exec_bytes_size > 0)
630 {
631 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
632 return false;
633 if (bfd_write ((PTR) & exec_bytes, 1, adata (abfd).exec_bytes_size, abfd) != adata (abfd).exec_bytes_size)
634 return false;
635 }
636 /* Now write out reloc info, followed by syms and strings */
637
638 if (bfd_get_outsymbols (abfd) != (asymbol **) NULL
639 && bfd_get_symcount (abfd) != 0)
640 {
641 if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*execp)), SEEK_SET) != 0)
642 return false;
643
644 if (!NAME (aout, write_syms) (abfd))
645 return false;
646 }
647
648 if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0)
649 return false;
650 if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)))
651 return false;
652
653 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0)
654 return false;
655 if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd)))
656 return false;
657 }
658
659 return true;
660}
661
662static boolean
663tic30_aout_set_sizes (abfd)
664 bfd *abfd;
665{
666 adata (abfd).page_size = TARGET_PAGE_SIZE;
667
668#ifdef SEGMENT_SIZE
669 adata (abfd).segment_size = SEGMENT_SIZE;
670#else
671 adata (abfd).segment_size = TARGET_PAGE_SIZE;
672#endif
673
674#ifdef ZMAGIC_DISK_BLOCK_SIZE
675 adata (abfd).zmagic_disk_block_size = ZMAGIC_DISK_BLOCK_SIZE;
676#else
677 adata (abfd).zmagic_disk_block_size = TARGET_PAGE_SIZE;
678#endif
679
680 adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
681
682 return true;
683}
684
685#ifndef MY_final_link_callback
686
687/* Callback for the final_link routine to set the section offsets. */
688
689static void MY_final_link_callback
690 PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
691
692static void
693MY_final_link_callback (abfd, ptreloff, pdreloff, psymoff)
694 bfd *abfd;
695 file_ptr *ptreloff;
696 file_ptr *pdreloff;
697 file_ptr *psymoff;
698{
699 struct internal_exec *execp = exec_hdr (abfd);
700
701 *ptreloff = obj_datasec (abfd)->filepos + execp->a_data;
702 *pdreloff = *ptreloff + execp->a_trsize;
703 *psymoff = *pdreloff + execp->a_drsize;;
704}
705
706#endif
707
708#ifndef MY_bfd_final_link
709
710/* Final link routine. We need to use a call back to get the correct
711 offsets in the output file. */
712
713static boolean
714MY_bfd_final_link (abfd, info)
715 bfd *abfd;
716 struct bfd_link_info *info;
717{
718 struct internal_exec *execp = exec_hdr (abfd);
719 file_ptr pos;
720 bfd_vma vma = 0;
721 int pad;
722
723 /* Set the executable header size to 0, as we don't want one for an
724 output. */
725 adata (abfd).exec_bytes_size = 0;
726 pos = adata (abfd).exec_bytes_size;
727 /* Text. */
728 vma = info->create_object_symbols_section->vma;
729 pos += vma;
730 obj_textsec (abfd)->filepos = pos;
731 obj_textsec (abfd)->vma = vma;
732 obj_textsec (abfd)->user_set_vma = 1;
733 pos += obj_textsec (abfd)->_raw_size;
734 vma += obj_textsec (abfd)->_raw_size;
735
736 /* Data. */
737 if (abfd->flags & D_PAGED)
738 {
739 if (info->create_object_symbols_section->next->vma > 0)
740 obj_datasec (abfd)->vma = info->create_object_symbols_section->next->vma;
741 else
742 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
743 }
744 else
745 {
746 obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4);
747 }
748 if (obj_datasec (abfd)->vma < vma)
749 {
750 obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4);
751 }
752 obj_datasec (abfd)->user_set_vma = 1;
753 vma = obj_datasec (abfd)->vma;
754 obj_datasec (abfd)->filepos = vma + adata (abfd).exec_bytes_size;
755 execp->a_text = vma - obj_textsec (abfd)->vma;
756 obj_textsec (abfd)->_raw_size = execp->a_text;
757
758 /* Since BSS follows data immediately, see if it needs alignment. */
759 vma += obj_datasec (abfd)->_raw_size;
760 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
761 obj_datasec (abfd)->_raw_size += pad;
762 pos += obj_datasec (abfd)->_raw_size;
763 execp->a_data = obj_datasec (abfd)->_raw_size;
764
765 /* BSS. */
766 obj_bsssec (abfd)->vma = vma;
767 obj_bsssec (abfd)->user_set_vma = 1;
768
769 /* We are fully resized, so don't readjust in final_link. */
770 adata (abfd).magic = z_magic;
771
772 return NAME (aout, final_link) (abfd, info, MY_final_link_callback);
773}
774
775#endif
776
777enum machine_type
778tic30_aout_machine_type (arch, machine, unknown)
779 enum bfd_architecture arch;
780 unsigned long machine ATTRIBUTE_UNUSED;
781 boolean *unknown;
782{
783 enum machine_type arch_flags;
784
785 arch_flags = M_UNKNOWN;
786 *unknown = true;
787
788 switch (arch)
789 {
790 case bfd_arch_tic30:
791 *unknown = false;
792 break;
793 default:
794 arch_flags = M_UNKNOWN;
795 }
796 if (arch_flags != M_UNKNOWN)
797 *unknown = false;
798 return arch_flags;
799}
800
801boolean
802tic30_aout_set_arch_mach (abfd, arch, machine)
803 bfd *abfd;
804 enum bfd_architecture arch;
805 unsigned long machine;
806{
807 if (!bfd_default_set_arch_mach (abfd, arch, machine))
808 return false;
809 if (arch != bfd_arch_unknown)
810 {
811 boolean unknown;
812 tic30_aout_machine_type (arch, machine, &unknown);
813 if (unknown)
814 return false;
815 }
816 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
817 return (*aout_backend_info (abfd)->set_sizes) (abfd);
818}
819
820/* We assume BFD generic archive files. */
821#ifndef MY_openr_next_archived_file
822#define MY_openr_next_archived_file bfd_generic_openr_next_archived_file
823#endif
824#ifndef MY_get_elt_at_index
825#define MY_get_elt_at_index _bfd_generic_get_elt_at_index
826#endif
827#ifndef MY_generic_stat_arch_elt
828#define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt
829#endif
830#ifndef MY_slurp_armap
831#define MY_slurp_armap bfd_slurp_bsd_armap
832#endif
833#ifndef MY_slurp_extended_name_table
834#define MY_slurp_extended_name_table _bfd_slurp_extended_name_table
835#endif
836#ifndef MY_construct_extended_name_table
837#define MY_construct_extended_name_table \
838 _bfd_archive_bsd_construct_extended_name_table
839#endif
840#ifndef MY_write_armap
841#define MY_write_armap bsd_write_armap
842#endif
843#ifndef MY_read_ar_hdr
844#define MY_read_ar_hdr _bfd_generic_read_ar_hdr
845#endif
846#ifndef MY_truncate_arname
847#define MY_truncate_arname bfd_bsd_truncate_arname
848#endif
849#ifndef MY_update_armap_timestamp
850#define MY_update_armap_timestamp _bfd_archive_bsd_update_armap_timestamp
851#endif
852
853/* No core file defined here -- configure in trad-core.c separately. */
854#ifndef MY_core_file_failing_command
855#define MY_core_file_failing_command _bfd_nocore_core_file_failing_command
856#endif
857#ifndef MY_core_file_failing_signal
858#define MY_core_file_failing_signal _bfd_nocore_core_file_failing_signal
859#endif
860#ifndef MY_core_file_matches_executable_p
861#define MY_core_file_matches_executable_p \
862 _bfd_nocore_core_file_matches_executable_p
863#endif
864#ifndef MY_core_file_p
865#define MY_core_file_p _bfd_dummy_target
866#endif
867
868#ifndef MY_bfd_debug_info_start
869#define MY_bfd_debug_info_start bfd_void
870#endif
871#ifndef MY_bfd_debug_info_end
872#define MY_bfd_debug_info_end bfd_void
873#endif
874#ifndef MY_bfd_debug_info_accumulate
875#define MY_bfd_debug_info_accumulate \
876 (void (*) PARAMS ((bfd*, struct sec *))) bfd_void
877#endif
878
879#ifndef MY_core_file_failing_command
880#define MY_core_file_failing_command NAME(aout,core_file_failing_command)
881#endif
882#ifndef MY_core_file_failing_signal
883#define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
884#endif
885#ifndef MY_core_file_matches_executable_p
886#define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
887#endif
888#ifndef MY_set_section_contents
889#define MY_set_section_contents NAME(aout,set_section_contents)
890#endif
891#ifndef MY_get_section_contents
892#define MY_get_section_contents aout_32_get_section_contents
893#endif
894#ifndef MY_get_section_contents_in_window
895#define MY_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
896#endif
897#ifndef MY_new_section_hook
898#define MY_new_section_hook NAME(aout,new_section_hook)
899#endif
900#ifndef MY_get_symtab_upper_bound
901#define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
902#endif
903#ifndef MY_get_symtab
904#define MY_get_symtab NAME(aout,get_symtab)
905#endif
906#ifndef MY_get_reloc_upper_bound
907#define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
908#endif
909#ifndef MY_canonicalize_reloc
910#define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
911#endif
912#ifndef MY_make_empty_symbol
913#define MY_make_empty_symbol NAME(aout,make_empty_symbol)
914#endif
915#ifndef MY_print_symbol
916#define MY_print_symbol NAME(aout,print_symbol)
917#endif
918#ifndef MY_get_symbol_info
919#define MY_get_symbol_info NAME(aout,get_symbol_info)
920#endif
921#ifndef MY_get_lineno
922#define MY_get_lineno NAME(aout,get_lineno)
923#endif
924#ifndef MY_set_arch_mach
925#define MY_set_arch_mach tic30_aout_set_arch_mach
926#endif
927#ifndef MY_find_nearest_line
928#define MY_find_nearest_line NAME(aout,find_nearest_line)
929#endif
930#ifndef MY_sizeof_headers
931#define MY_sizeof_headers NAME(aout,sizeof_headers)
932#endif
933#ifndef MY_bfd_get_relocated_section_contents
934#define MY_bfd_get_relocated_section_contents \
935 bfd_generic_get_relocated_section_contents
936#endif
937#ifndef MY_bfd_relax_section
938#define MY_bfd_relax_section bfd_generic_relax_section
939#endif
940#ifndef MY_bfd_gc_sections
941#define MY_bfd_gc_sections bfd_generic_gc_sections
942#endif
943#ifndef MY_bfd_reloc_type_lookup
944#define MY_bfd_reloc_type_lookup tic30_aout_reloc_type_lookup
945#endif
946#ifndef MY_bfd_make_debug_symbol
947#define MY_bfd_make_debug_symbol 0
948#endif
949#ifndef MY_read_minisymbols
950#define MY_read_minisymbols NAME(aout,read_minisymbols)
951#endif
952#ifndef MY_minisymbol_to_symbol
953#define MY_minisymbol_to_symbol NAME(aout,minisymbol_to_symbol)
954#endif
955#ifndef MY_bfd_link_hash_table_create
956#define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
957#endif
958#ifndef MY_bfd_link_add_symbols
959#define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
960#endif
961#ifndef MY_bfd_link_split_section
962#define MY_bfd_link_split_section _bfd_generic_link_split_section
963#endif
964
965#ifndef MY_bfd_copy_private_bfd_data
966#define MY_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
967#endif
968
969#ifndef MY_bfd_merge_private_bfd_data
970#define MY_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
971#endif
972
973#ifndef MY_bfd_copy_private_symbol_data
974#define MY_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
975#endif
976
977#ifndef MY_bfd_print_private_bfd_data
978#define MY_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
979#endif
980
981#ifndef MY_bfd_set_private_flags
982#define MY_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
983#endif
984
985#ifndef MY_bfd_is_local_label_name
986#define MY_bfd_is_local_label_name bfd_generic_is_local_label_name
987#endif
988
989#ifndef MY_bfd_free_cached_info
990#define MY_bfd_free_cached_info NAME(aout,bfd_free_cached_info)
991#endif
992
993#ifndef MY_close_and_cleanup
994#define MY_close_and_cleanup MY_bfd_free_cached_info
995#endif
996
997#ifndef MY_get_dynamic_symtab_upper_bound
998#define MY_get_dynamic_symtab_upper_bound \
999 _bfd_nodynamic_get_dynamic_symtab_upper_bound
1000#endif
1001#ifndef MY_canonicalize_dynamic_symtab
1002#define MY_canonicalize_dynamic_symtab \
1003 _bfd_nodynamic_canonicalize_dynamic_symtab
1004#endif
1005#ifndef MY_get_dynamic_reloc_upper_bound
1006#define MY_get_dynamic_reloc_upper_bound \
1007 _bfd_nodynamic_get_dynamic_reloc_upper_bound
1008#endif
1009#ifndef MY_canonicalize_dynamic_reloc
1010#define MY_canonicalize_dynamic_reloc \
1011 _bfd_nodynamic_canonicalize_dynamic_reloc
1012#endif
1013
1014/* Aout symbols normally have leading underscores */
1015#ifndef MY_symbol_leading_char
1016#define MY_symbol_leading_char '_'
1017#endif
1018
1019/* Aout archives normally use spaces for padding */
1020#ifndef AR_PAD_CHAR
1021#define AR_PAD_CHAR ' '
1022#endif
1023
1024#ifndef MY_BFD_TARGET
1025const bfd_target tic30_aout_vec =
1026{
1027 TARGETNAME, /* name */
1028 bfd_target_aout_flavour,
1029 BFD_ENDIAN_BIG, /* target byte order (big) */
1030 BFD_ENDIAN_BIG, /* target headers byte order (big) */
1031 (HAS_RELOC | /* object flags */
1032 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
1033 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1034 MY_symbol_leading_char,
1035 AR_PAD_CHAR, /* ar_pad_char */
1036 15, /* ar_max_namelen */
1037 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1038 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1039 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
1040 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1041 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1042 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
1043 {_bfd_dummy_target, MY_object_p, /* bfd_check_format */
1044 bfd_generic_archive_p, MY_core_file_p},
1045 {bfd_false, MY_mkobject, /* bfd_set_format */
1046 _bfd_generic_mkarchive, bfd_false},
1047 {bfd_false, MY_write_object_contents, /* bfd_write_contents */
1048 _bfd_write_archive_contents, bfd_false},
1049
1050 BFD_JUMP_TABLE_GENERIC (MY),
1051 BFD_JUMP_TABLE_COPY (MY),
1052 BFD_JUMP_TABLE_CORE (MY),
1053 BFD_JUMP_TABLE_ARCHIVE (MY),
1054 BFD_JUMP_TABLE_SYMBOLS (MY),
1055 BFD_JUMP_TABLE_RELOCS (MY),
1056 BFD_JUMP_TABLE_WRITE (MY),
1057 BFD_JUMP_TABLE_LINK (MY),
1058 BFD_JUMP_TABLE_DYNAMIC (MY),
1059
1060 NULL,
1061
1062 (PTR) MY_backend_data
1063};
1064#endif /* MY_BFD_TARGET */
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