1 /* BFD back-end for Texas Instruments TMS320C80 Multimedia Video Processor (MVP).
2 Copyright 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
3 2012 Free Software Foundation, Inc.
5 Written by Fred Fish (fnf@cygnus.com)
7 There is nothing new under the sun. This file draws a lot on other
10 This file is part of BFD, the Binary File Descriptor library.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, 51 Franklin Street - Fifth Floor,
25 Boston, MA 02110-1301, USA. */
32 /* Newlib-based hosts define _CONST as a STDC-safe alias for const,
33 but to the tic80 toolchain it means something altogether different.
34 Since sysdep.h will have pulled in stdio.h and hence _ansi.h which
35 contains this definition, we must undef it before including the
36 tic80-specific definition. */
39 #include "coff/tic80.h"
40 #include "coff/internal.h"
43 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
44 #define COFF_ALIGN_IN_SECTION_HEADER 1
45 #define COFF_ALIGN_IN_SFLAGS 1
47 #define GET_SCNHDR_FLAGS H_GET_16
48 #define PUT_SCNHDR_FLAGS H_PUT_16
50 static bfd_reloc_status_type ppbase_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type glob15_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type glob16_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_reloc_status_type local16_reloc
57 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
60 static reloc_howto_type tic80_howto_table[] =
63 HOWTO (R_RELLONG, /* type */
65 2, /* size (0 = byte, 1 = short, 2 = long) */
67 FALSE, /* pc_relative */
69 complain_overflow_bitfield, /* complain_on_overflow */
70 NULL, /* special_function */
72 TRUE, /* partial_inplace */
73 0xffffffff, /* src_mask */
74 0xffffffff, /* dst_mask */
75 FALSE), /* pcrel_offset */
77 HOWTO (R_MPPCR, /* type */
79 2, /* size (0 = byte, 1 = short, 2 = long) */
81 TRUE, /* pc_relative */
83 complain_overflow_signed, /* complain_on_overflow */
84 NULL, /* special_function */
86 TRUE, /* partial_inplace */
87 0xffffffff, /* src_mask */
88 0xffffffff, /* dst_mask */
89 TRUE), /* pcrel_offset */
91 HOWTO (R_ABS, /* type */
93 2, /* size (0 = byte, 1 = short, 2 = long) */
95 FALSE, /* pc_relative */
97 complain_overflow_bitfield, /* complain_on_overflow */
98 NULL, /* special_function */
100 TRUE, /* partial_inplace */
101 0xffffffff, /* src_mask */
102 0xffffffff, /* dst_mask */
103 FALSE), /* pcrel_offset */
105 HOWTO (R_PPBASE, /* type */
107 2, /* size (0 = byte, 1 = short, 2 = long) */
109 FALSE, /* pc_relative */
111 complain_overflow_dont, /* complain_on_overflow */
112 ppbase_reloc, /* special_function */
114 TRUE, /* partial_inplace */
115 0xffffffff, /* src_mask */
116 0xffffffff, /* dst_mask */
117 FALSE), /* pcrel_offset */
119 HOWTO (R_PPLBASE, /* type */
121 2, /* size (0 = byte, 1 = short, 2 = long) */
123 FALSE, /* pc_relative */
125 complain_overflow_dont, /* complain_on_overflow */
126 ppbase_reloc, /* special_function */
127 "PPLBASE", /* name */
128 TRUE, /* partial_inplace */
129 0xffffffff, /* src_mask */
130 0xffffffff, /* dst_mask */
131 FALSE), /* pcrel_offset */
133 HOWTO (R_PP15, /* type */
135 2, /* size (0 = byte, 1 = short, 2 = long) */
137 FALSE, /* pc_relative */
139 complain_overflow_dont, /* complain_on_overflow */
140 glob15_reloc, /* special_function */
142 TRUE, /* partial_inplace */
143 0x1ffc0, /* src_mask */
144 0x1ffc0, /* dst_mask */
145 FALSE), /* pcrel_offset */
147 HOWTO (R_PP15W, /* type */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
151 FALSE, /* pc_relative */
153 complain_overflow_dont, /* complain_on_overflow */
154 glob15_reloc, /* special_function */
156 TRUE, /* partial_inplace */
157 0x1ffc0, /* src_mask */
158 0x1ffc0, /* dst_mask */
159 FALSE), /* pcrel_offset */
161 HOWTO (R_PP15H, /* type */
163 2, /* size (0 = byte, 1 = short, 2 = long) */
165 FALSE, /* pc_relative */
167 complain_overflow_dont, /* complain_on_overflow */
168 glob15_reloc, /* special_function */
170 TRUE, /* partial_inplace */
171 0x1ffc0, /* src_mask */
172 0x1ffc0, /* dst_mask */
173 FALSE), /* pcrel_offset */
175 HOWTO (R_PP16B, /* type */
177 2, /* size (0 = byte, 1 = short, 2 = long) */
179 FALSE, /* pc_relative */
181 complain_overflow_dont, /* complain_on_overflow */
182 glob16_reloc, /* special_function */
184 TRUE, /* partial_inplace */
185 0x3ffc0, /* src_mask */
186 0x3ffc0, /* dst_mask */
187 FALSE), /* pcrel_offset */
189 HOWTO (R_PPL15, /* type */
191 2, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE, /* pc_relative */
195 complain_overflow_dont, /* complain_on_overflow */
196 NULL, /* special_function */
198 TRUE, /* partial_inplace */
199 0x7fff, /* src_mask */
200 0x7fff, /* dst_mask */
201 FALSE), /* pcrel_offset */
203 HOWTO (R_PPL15W, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE, /* pc_relative */
209 complain_overflow_dont, /* complain_on_overflow */
210 NULL, /* special_function */
212 TRUE, /* partial_inplace */
213 0x7fff, /* src_mask */
214 0x7fff, /* dst_mask */
215 FALSE), /* pcrel_offset */
217 HOWTO (R_PPL15H, /* type */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
221 FALSE, /* pc_relative */
223 complain_overflow_dont, /* complain_on_overflow */
224 NULL, /* special_function */
226 TRUE, /* partial_inplace */
227 0x7fff, /* src_mask */
228 0x7fff, /* dst_mask */
229 FALSE), /* pcrel_offset */
231 HOWTO (R_PPL16B, /* type */
233 2, /* size (0 = byte, 1 = short, 2 = long) */
235 FALSE, /* pc_relative */
237 complain_overflow_dont, /* complain_on_overflow */
238 local16_reloc, /* special_function */
240 TRUE, /* partial_inplace */
241 0xffff, /* src_mask */
242 0xffff, /* dst_mask */
243 FALSE), /* pcrel_offset */
245 HOWTO (R_PPN15, /* type */
247 -2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_dont, /* complain_on_overflow */
252 glob15_reloc, /* special_function */
254 TRUE, /* partial_inplace */
255 0x1ffc0, /* src_mask */
256 0x1ffc0, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 HOWTO (R_PPN15W, /* type */
261 -2, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE, /* pc_relative */
265 complain_overflow_dont, /* complain_on_overflow */
266 glob15_reloc, /* special_function */
268 TRUE, /* partial_inplace */
269 0x1ffc0, /* src_mask */
270 0x1ffc0, /* dst_mask */
271 FALSE), /* pcrel_offset */
273 HOWTO (R_PPN15H, /* type */
275 -2, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_dont, /* complain_on_overflow */
280 glob15_reloc, /* special_function */
282 TRUE, /* partial_inplace */
283 0x1ffc0, /* src_mask */
284 0x1ffc0, /* dst_mask */
285 FALSE), /* pcrel_offset */
287 HOWTO (R_PPN16B, /* type */
289 -2, /* size (0 = byte, 1 = short, 2 = long) */
291 FALSE, /* pc_relative */
293 complain_overflow_dont, /* complain_on_overflow */
294 glob16_reloc, /* special_function */
296 TRUE, /* partial_inplace */
297 0x3ffc0, /* src_mask */
298 0x3ffc0, /* dst_mask */
299 FALSE), /* pcrel_offset */
301 HOWTO (R_PPLN15, /* type */
303 -2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_dont, /* complain_on_overflow */
308 NULL, /* special_function */
310 TRUE, /* partial_inplace */
311 0x7fff, /* src_mask */
312 0x7fff, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 HOWTO (R_PPLN15W, /* type */
317 -2, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE, /* pc_relative */
321 complain_overflow_dont, /* complain_on_overflow */
322 NULL, /* special_function */
323 "PPLN15W", /* name */
324 TRUE, /* partial_inplace */
325 0x7fff, /* src_mask */
326 0x7fff, /* dst_mask */
327 FALSE), /* pcrel_offset */
329 HOWTO (R_PPLN15H, /* type */
331 -2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_dont, /* complain_on_overflow */
336 NULL, /* special_function */
337 "PPLN15H", /* name */
338 TRUE, /* partial_inplace */
339 0x7fff, /* src_mask */
340 0x7fff, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 HOWTO (R_PPLN16B, /* type */
345 -2, /* size (0 = byte, 1 = short, 2 = long) */
347 FALSE, /* pc_relative */
349 complain_overflow_dont, /* complain_on_overflow */
350 local16_reloc, /* special_function */
351 "PPLN16B", /* name */
352 TRUE, /* partial_inplace */
353 0xffff, /* src_mask */
354 0xffff, /* dst_mask */
355 FALSE) /* pcrel_offset */
358 /* Special relocation functions, used when the output file is not
359 itself a COFF TIc80 file. */
361 /* This special function is used for the base address type
364 static bfd_reloc_status_type
365 ppbase_reloc (bfd *abfd ATTRIBUTE_UNUSED,
366 arelent *reloc_entry ATTRIBUTE_UNUSED,
367 asymbol *symbol_in ATTRIBUTE_UNUSED,
368 void * data ATTRIBUTE_UNUSED,
369 asection *input_section ATTRIBUTE_UNUSED,
370 bfd *output_bfd ATTRIBUTE_UNUSED,
371 char **error_message ATTRIBUTE_UNUSED)
377 /* This special function is used for the global 15 bit relocations. */
379 static bfd_reloc_status_type
380 glob15_reloc (bfd *abfd ATTRIBUTE_UNUSED,
381 arelent *reloc_entry ATTRIBUTE_UNUSED,
382 asymbol *symbol_in ATTRIBUTE_UNUSED,
383 void * data ATTRIBUTE_UNUSED,
384 asection *input_section ATTRIBUTE_UNUSED,
385 bfd *output_bfd ATTRIBUTE_UNUSED,
386 char **error_message ATTRIBUTE_UNUSED)
392 /* This special function is used for the global 16 bit relocations. */
394 static bfd_reloc_status_type
395 glob16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
396 arelent *reloc_entry ATTRIBUTE_UNUSED,
397 asymbol *symbol_in ATTRIBUTE_UNUSED,
398 void * data ATTRIBUTE_UNUSED,
399 asection *input_section ATTRIBUTE_UNUSED,
400 bfd *output_bfd ATTRIBUTE_UNUSED,
401 char **error_message ATTRIBUTE_UNUSED)
407 /* This special function is used for the local 16 bit relocations. */
409 static bfd_reloc_status_type
410 local16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
411 arelent *reloc_entry ATTRIBUTE_UNUSED,
412 asymbol *symbol_in ATTRIBUTE_UNUSED,
413 void * data ATTRIBUTE_UNUSED,
414 asection *input_section ATTRIBUTE_UNUSED,
415 bfd *output_bfd ATTRIBUTE_UNUSED,
416 char **error_message ATTRIBUTE_UNUSED)
422 /* Code to turn an external r_type into a pointer to an entry in the howto_table.
423 If passed an r_type we don't recognize the abort rather than silently failing
424 to generate an output file. */
427 rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
431 for (i = 0; i < sizeof tic80_howto_table / sizeof tic80_howto_table[0]; i++)
433 if (tic80_howto_table[i].type == dst->r_type)
435 cache_ptr->howto = tic80_howto_table + i;
440 (*_bfd_error_handler) (_("Unrecognized reloc type 0x%x"),
441 (unsigned int) dst->r_type);
442 cache_ptr->howto = tic80_howto_table + 0;
445 #define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
446 #define coff_rtype_to_howto coff_tic80_rtype_to_howto
448 static reloc_howto_type *
449 coff_tic80_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
451 struct internal_reloc *rel,
452 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
453 struct internal_syment *sym ATTRIBUTE_UNUSED,
458 if (rel -> r_symndx == -1 && addendp != NULL)
460 /* This is a TI "internal relocation", which means that the relocation
461 amount is the amount by which the current section is being relocated
462 in the output section. */
463 *addendp = (sec -> output_section -> vma + sec -> output_offset) - sec -> vma;
465 RTYPE2HOWTO (&genrel, rel);
470 #define BADMAG(x) TIC80BADMAG(x)
473 #define coff_relocate_section coff_tic80_relocate_section
475 /* We need a special relocation routine to handle the PP relocs. Most
476 of this is a copy of _bfd_coff_generic_relocate_section. */
479 coff_tic80_relocate_section (bfd *output_bfd,
480 struct bfd_link_info *info,
482 asection *input_section,
484 struct internal_reloc *relocs,
485 struct internal_syment *syms,
488 struct internal_reloc *rel;
489 struct internal_reloc *relend;
492 relend = rel + input_section->reloc_count;
493 for (; rel < relend; rel++)
496 struct coff_link_hash_entry *h;
497 struct internal_syment *sym;
500 reloc_howto_type *howto;
501 bfd_reloc_status_type rstat;
504 symndx = rel->r_symndx;
513 h = obj_coff_sym_hashes (input_bfd)[symndx];
517 /* COFF treats common symbols in one of two ways. Either the
518 size of the symbol is included in the section contents, or it
519 is not. We assume that the size is not included, and force
520 the rtype_to_howto function to adjust the addend as needed. */
522 if (sym != NULL && sym->n_scnum != 0)
523 addend = - sym->n_value;
527 howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
540 sec = bfd_abs_section_ptr;
545 sec = sections[symndx];
546 val = (sec->output_section->vma
549 if (! obj_pe (output_bfd))
555 if (h->root.type == bfd_link_hash_defined
556 || h->root.type == bfd_link_hash_defweak)
560 sec = h->root.u.def.section;
561 val = (h->root.u.def.value
562 + sec->output_section->vma
563 + sec->output_offset);
566 else if (! info->relocatable)
568 if (! ((*info->callbacks->undefined_symbol)
569 (info, h->root.root.string, input_bfd, input_section,
570 rel->r_vaddr - input_section->vma, TRUE)))
575 addr = rel->r_vaddr - input_section->vma;
577 /* FIXME: This code assumes little endian, but the PP can
578 apparently be bi-endian. I don't know if the bi-endianness
579 applies to the instruction set or just to the data. */
591 rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
592 contents, addr, val, addend);
601 /* Offset the address so that we can use 4 byte relocations. */
602 rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
603 contents + 2, addr, val, addend);
609 /* The most significant bit is stored in bit 6. */
612 hold = contents[addr + 4];
613 contents[addr + 4] &=~ 0x20;
614 contents[addr + 4] |= (contents[addr] >> 1) & 0x20;
615 rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
618 contents[addr] &=~ 0x40;
619 contents[addr] |= (contents[addr + 4] << 1) & 0x40;
620 contents[addr + 4] &=~ 0x20;
621 contents[addr + 4] |= hold & 0x20;
628 /* The most significant bit is stored in bit 28. */
631 hold = contents[addr + 1];
632 contents[addr + 1] &=~ 0x80;
633 contents[addr + 1] |= (contents[addr + 3] << 3) & 0x80;
634 rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
637 contents[addr + 3] &= ~0x10;
638 contents[addr + 3] |= (contents[addr + 1] >> 3) & 0x10;
639 contents[addr + 1] &=~ 0x80;
640 contents[addr + 1] |= hold & 0x80;
645 /* Parameter RAM is from 0x1000000 to 0x1000800. */
646 contents[addr] &=~ 0x3;
647 if (val >= 0x1000000 && val < 0x1000800)
648 contents[addr] |= 0x3;
650 contents[addr] |= 0x2;
651 rstat = bfd_reloc_ok;
655 /* Parameter RAM is from 0x1000000 to 0x1000800. */
656 contents[addr + 2] &= ~0xc0;
657 if (val >= 0x1000000 && val < 0x1000800)
658 contents[addr + 2] |= 0xc0;
660 contents[addr + 2] |= 0x80;
661 rstat = bfd_reloc_ok;
671 case bfd_reloc_outofrange:
672 (*_bfd_error_handler)
673 (_("%B: bad reloc address 0x%lx in section `%A'"),
674 input_bfd, input_section, (unsigned long) rel->r_vaddr);
676 case bfd_reloc_overflow:
679 char buf[SYMNMLEN + 1];
687 name = _bfd_coff_internal_syment_name (input_bfd, sym, buf);
692 if (! ((*info->callbacks->reloc_overflow)
693 (info, (h ? &h->root : NULL), name, howto->name,
694 (bfd_vma) 0, input_bfd, input_section,
695 rel->r_vaddr - input_section->vma)))
703 #define TIC80COFF 1 /* Customize coffcode.h */
704 #undef C_AUTOARG /* Clashes with TIc80's C_UEXT */
705 #undef C_LASTENT /* Clashes with TIc80's C_STATLAB */
707 #ifndef bfd_pe_print_pdata
708 #define bfd_pe_print_pdata NULL
711 #include "coffcode.h"
713 CREATE_LITTLE_COFF_TARGET_VEC (tic80coff_vec, "coff-tic80", D_PAGED, 0, '_', NULL, COFF_SWAP_TABLE)