1 /* BFD back-end for Intel 960 b.out binaries.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
28 #include "aout/stab_gnu.h"
29 #include "libaout.h" /* BFD a.out internal data structures */
32 extern bfd_error_vector_type bfd_error_vector;
33 PROTO (static boolean, b_out_squirt_out_relocs,(bfd *abfd, asection *section));
34 PROTO (static bfd_target *, b_out_callback, (bfd *));
36 PROTO (boolean, aout_32_slurp_symbol_table, (bfd *abfd));
37 PROTO (void , aout_32_write_syms, ());
39 /* Swaps the information in an executable header taken from a raw byte
40 stream memory image, into the internal exec_header structure. */
42 PROTO(void, bout_swap_exec_header_in,
44 struct external_exec *raw_bytes,
45 struct internal_exec *execp));
48 DEFUN(bout_swap_exec_header_in,(abfd, raw_bytes, execp),
50 struct external_exec *raw_bytes AND
51 struct internal_exec *execp)
53 struct external_exec *bytes = (struct external_exec *)raw_bytes;
55 /* Now fill in fields in the execp, from the bytes in the raw data. */
56 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
57 execp->a_text = GET_WORD (abfd, bytes->e_text);
58 execp->a_data = GET_WORD (abfd, bytes->e_data);
59 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
60 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
61 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
62 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
63 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
64 execp->a_tload = GET_WORD (abfd, bytes->e_tload);
65 execp->a_dload = GET_WORD (abfd, bytes->e_dload);
66 execp->a_talign = bytes->e_talign[0];
67 execp->a_dalign = bytes->e_dalign[0];
68 execp->a_balign = bytes->e_balign[0];
69 execp->a_relaxable = bytes->e_relaxable[0];
72 /* Swaps the information in an internal exec header structure into the
73 supplied buffer ready for writing to disk. */
75 PROTO(void, bout_swap_exec_header_out,
77 struct internal_exec *execp,
78 struct external_exec *raw_bytes));
80 DEFUN(bout_swap_exec_header_out,(abfd, execp, raw_bytes),
82 struct internal_exec *execp AND
83 struct external_exec *raw_bytes)
85 struct external_exec *bytes = (struct external_exec *)raw_bytes;
87 /* Now fill in fields in the raw data, from the fields in the exec struct. */
88 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
89 PUT_WORD (abfd, execp->a_text , bytes->e_text);
90 PUT_WORD (abfd, execp->a_data , bytes->e_data);
91 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
92 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
93 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
94 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
95 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
96 PUT_WORD (abfd, execp->a_tload , bytes->e_tload);
97 PUT_WORD (abfd, execp->a_dload , bytes->e_dload);
98 bytes->e_talign[0] = execp->a_talign;
99 bytes->e_dalign[0] = execp->a_dalign;
100 bytes->e_balign[0] = execp->a_balign;
101 bytes->e_relaxable[0] = execp->a_relaxable;
106 b_out_object_p (abfd)
109 struct internal_exec anexec;
110 struct external_exec exec_bytes;
112 if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
113 != EXEC_BYTES_SIZE) {
114 bfd_error = wrong_format;
118 anexec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
120 if (N_BADMAG (anexec)) {
121 bfd_error = wrong_format;
125 bout_swap_exec_header_in (abfd, &exec_bytes, &anexec);
126 return aout_32_some_aout_object_p (abfd, &anexec, b_out_callback);
130 /* Finish up the opening of a b.out file for reading. Fill in all the
131 fields that are not handled by common code. */
134 b_out_callback (abfd)
137 struct internal_exec *execp = exec_hdr (abfd);
138 unsigned long bss_start;
140 /* Architecture and machine type */
141 bfd_set_arch_mach(abfd,
142 bfd_arch_i960, /* B.out only used on i960 */
143 bfd_mach_i960_core /* Default */
146 /* The positions of the string table and symbol table. */
147 obj_str_filepos (abfd) = N_STROFF (*execp);
148 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
150 /* The alignments of the sections */
151 obj_textsec (abfd)->alignment_power = execp->a_talign;
152 obj_datasec (abfd)->alignment_power = execp->a_dalign;
153 obj_bsssec (abfd)->alignment_power = execp->a_balign;
155 /* The starting addresses of the sections. */
156 obj_textsec (abfd)->vma = execp->a_tload;
157 obj_datasec (abfd)->vma = execp->a_dload;
159 /* And reload the sizes, since the aout module zaps them */
160 obj_textsec (abfd)->_raw_size = execp->a_text;
162 bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section */
163 obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
165 /* The file positions of the sections */
166 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
167 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
169 /* The file positions of the relocation info */
170 obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
171 obj_datasec (abfd)->rel_filepos = N_DROFF(*execp);
173 adata(abfd).page_size = 1; /* Not applicable. */
174 adata(abfd).segment_size = 1; /* Not applicable. */
175 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
177 if (execp->a_relaxable)
178 abfd->flags |= BFD_IS_RELAXABLE;
182 struct bout_data_struct {
184 struct internal_exec e;
188 b_out_mkobject (abfd)
191 struct bout_data_struct *rawptr;
193 rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
194 if (rawptr == NULL) {
195 bfd_error = no_memory;
199 abfd->tdata.bout_data = rawptr;
200 exec_hdr (abfd) = &rawptr->e;
202 /* For simplicity's sake we just make all the sections right here. */
203 obj_textsec (abfd) = (asection *)NULL;
204 obj_datasec (abfd) = (asection *)NULL;
205 obj_bsssec (abfd) = (asection *)NULL;
207 bfd_make_section (abfd, ".text");
208 bfd_make_section (abfd, ".data");
209 bfd_make_section (abfd, ".bss");
215 b_out_write_object_contents (abfd)
218 struct external_exec swapped_hdr;
220 exec_hdr (abfd)->a_info = BMAGIC;
222 exec_hdr (abfd)->a_text = obj_textsec (abfd)->_raw_size;
223 exec_hdr (abfd)->a_data = obj_datasec (abfd)->_raw_size;
224 exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_raw_size;
225 exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
226 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
227 exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
228 sizeof (struct relocation_info));
229 exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
230 sizeof (struct relocation_info));
232 exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
233 exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
234 exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
236 exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
237 exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
239 bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
241 bfd_seek (abfd, (file_ptr) 0, SEEK_SET);
242 bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd);
244 /* Now write out reloc info, followed by syms and strings */
245 if (bfd_get_symcount (abfd) != 0)
247 bfd_seek (abfd, (file_ptr)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET);
249 aout_32_write_syms (abfd);
251 bfd_seek (abfd, (file_ptr)(N_TROFF(*exec_hdr(abfd))), SEEK_SET);
253 if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
254 bfd_seek (abfd, (file_ptr)(N_DROFF(*exec_hdr(abfd))), SEEK_SET);
256 if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
261 /** Some reloc hackery */
263 #define CALLS 0x66003800 /* Template for 'calls' instruction */
264 #define BAL 0x0b000000 /* Template for 'bal' instruction */
265 #define BALX 0x85000000 /* Template for 'balx' instruction */
266 #define BAL_MASK 0x00ffffff
267 #define CALL 0x09000000
268 #define PCREL13_MASK 0x1fff
269 /* Magic to turn callx into calljx */
270 static bfd_reloc_status_type
271 DEFUN (calljx_callback, (abfd, reloc_entry, src, dst, input_section),
273 arelent *reloc_entry AND
277 asection *input_section)
279 int word = bfd_get_32(abfd, src);
280 asymbol *symbol_in = *(reloc_entry->sym_ptr_ptr);
281 aout_symbol_type *symbol = aout_symbol(symbol_in);
283 if (IS_CALLNAME(symbol->other))
286 aout_symbol_type *balsym = symbol+1;
287 int inst = bfd_get_32(abfd, (bfd_byte *) src-4);
288 /* The next symbol should be an N_BALNAME */
289 BFD_ASSERT(IS_BALNAME(balsym->other));
292 bfd_put_32(abfd, inst, (bfd_byte *) dst-4);
296 word += symbol->symbol.section->output_offset +
297 symbol->symbol.section->output_section->vma +
298 symbol->symbol.value + reloc_entry->addend;
300 bfd_put_32(abfd, word, dst);
305 /* Magic to turn call into callj */
306 static bfd_reloc_status_type
307 DEFUN (callj_callback, (abfd, reloc_entry, data, srcidx,dstidx, input_section),
309 arelent *reloc_entry AND
311 unsigned int srcidx AND
312 unsigned int dstidx AND
313 asection *input_section )
315 int word = bfd_get_32(abfd, (bfd_byte *) data + srcidx);
316 asymbol *symbol_in = *(reloc_entry->sym_ptr_ptr);
318 aout_symbol_type *symbol = aout_symbol(symbol_in);
320 if (IS_OTHER(symbol->other))
322 /* Call to a system procedure - replace code with system
324 word = CALLS | (symbol->other - 1);
328 else if (IS_CALLNAME(symbol->other))
330 aout_symbol_type *balsym = symbol+1;
331 /* The next symbol should be an N_BALNAME */
332 BFD_ASSERT(IS_BALNAME(balsym->other));
334 /* We are calling a leaf - so replace the call instruction
338 (((word & BAL_MASK) +
339 balsym->symbol.section->output_offset +
340 balsym->symbol.section->output_section->vma+
341 balsym->symbol.value + reloc_entry->addend - dstidx -
342 ( input_section->output_section->vma + input_section->output_offset))
351 (((word & BAL_MASK) +
352 symbol->symbol.section->output_offset +
353 symbol->symbol.section->output_section->vma+
354 symbol->symbol.value + reloc_entry->addend - dstidx -
355 ( input_section->output_section->vma + input_section->output_offset))
358 bfd_put_32(abfd, word, (bfd_byte *) data + dstidx);
362 /* type rshift size bitsize pcrel bitpos absolute overflow check*/
365 #define ABS32CODE_SHRUNK 1
370 #define ABS32_MAYBE_RELAXABLE 1
371 #define ABS32_WAS_RELAXABLE 2
375 static reloc_howto_type howto_reloc_callj =
376 HOWTO(CALLJ, 0, 2, 24, true, 0, true, true, 0,"callj", true, 0x00ffffff, 0x00ffffff,false);
377 static reloc_howto_type howto_reloc_abs32 =
378 HOWTO(ABS32, 0, 2, 32, false, 0, true, true,0,"abs32", true, 0xffffffff,0xffffffff,false);
379 static reloc_howto_type howto_reloc_pcrel24 =
380 HOWTO(PCREL24, 0, 2, 24, true, 0, true, true,0,"pcrel24", true, 0x00ffffff,0x00ffffff,false);
382 static reloc_howto_type howto_reloc_pcrel13 =
383 HOWTO(PCREL13, 0, 2, 13, true, 0, true, true,0,"pcrel13", true, 0x00001fff,0x00001fff,false);
386 static reloc_howto_type howto_reloc_abs32codeshrunk =
387 HOWTO(ABS32CODE_SHRUNK, 0, 2, 24, true, 0, true, true, 0,"callx->callj", true, 0x00ffffff, 0x00ffffff,false);
389 static reloc_howto_type howto_reloc_abs32code =
390 HOWTO(ABS32CODE, 0, 2, 32, false, 0, true, true,0,"callx", true, 0xffffffff,0xffffffff,false);
392 static reloc_howto_type howto_align_table[] = {
393 HOWTO (ALIGNER, 0, 0x1, 0, false, 0, false, false, 0, "align16", false, 0, 0, false),
394 HOWTO (ALIGNER, 0, 0x3, 0, false, 0, false, false, 0, "align32", false, 0, 0, false),
395 HOWTO (ALIGNER, 0, 0x7, 0, false, 0, false, false, 0, "align64", false, 0, 0, false),
396 HOWTO (ALIGNER, 0, 0xf, 0, false, 0, false, false, 0, "align128", false, 0, 0, false),
399 static reloc_howto_type howto_done_align_table[] = {
400 HOWTO (ALIGNDONE, 0x1, 0x1, 0, false, 0, false, false, 0, "donealign16", false, 0, 0, false),
401 HOWTO (ALIGNDONE, 0x3, 0x3, 0, false, 0, false, false, 0, "donealign32", false, 0, 0, false),
402 HOWTO (ALIGNDONE, 0x7, 0x7, 0, false, 0, false, false, 0, "donealign64", false, 0, 0, false),
403 HOWTO (ALIGNDONE, 0xf, 0xf, 0, false, 0, false, false, 0, "donealign128", false, 0, 0, false),
406 static reloc_howto_type *
407 b_out_reloc_type_lookup (abfd, code)
409 bfd_reloc_code_real_type code;
415 case BFD_RELOC_I960_CALLJ:
416 return &howto_reloc_callj;
418 return &howto_reloc_abs32;
419 case BFD_RELOC_24_PCREL:
420 return &howto_reloc_pcrel24;
424 /* Allocate enough room for all the reloc entries, plus pointers to them all */
427 b_out_slurp_reloc_table (abfd, asect, symbols)
432 register struct relocation_info *rptr;
433 unsigned int counter ;
435 int extern_mask, pcrel_mask, callj_mask, length_shift;
438 bfd_vma prev_addr = 0;
441 struct relocation_info *relocs;
442 arelent *reloc_cache;
444 if (asect->relocation) return true;
445 if (!aout_32_slurp_symbol_table (abfd)) return false;
447 if (asect == obj_datasec (abfd)) {
448 reloc_size = exec_hdr(abfd)->a_drsize;
452 if (asect == obj_textsec (abfd)) {
453 reloc_size = exec_hdr(abfd)->a_trsize;
457 bfd_error = invalid_operation;
461 bfd_seek (abfd, (file_ptr)(asect->rel_filepos), SEEK_SET);
462 count = reloc_size / sizeof (struct relocation_info);
464 relocs = (struct relocation_info *) bfd_xmalloc (reloc_size);
466 bfd_error = no_memory;
469 reloc_cache = (arelent *) bfd_xmalloc ((count+1) * sizeof (arelent));
471 free ((char*)relocs);
472 bfd_error = no_memory;
476 if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
477 bfd_error = system_call_error;
485 if (abfd->xvec->header_byteorder_big_p) {
486 /* big-endian bit field allocation order */
494 /* little-endian bit field allocation order */
503 for (rptr = relocs, cache_ptr = reloc_cache, counter = 0;
505 counter++, rptr++, cache_ptr++)
507 unsigned char *raw = (unsigned char *)rptr;
509 cache_ptr->address = bfd_h_get_32 (abfd, raw + 0);
510 cache_ptr->howto = 0;
511 if (abfd->xvec->header_byteorder_big_p)
513 symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
517 symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
520 if (raw[7] & extern_mask)
522 /* if this is set then the r_index is a index into the symbol table;
523 * if the bit is not set then r_index contains a section map.
524 * we either fill in the sym entry with a pointer to the symbol,
525 * or point to the correct section
527 cache_ptr->sym_ptr_ptr = symbols + symnum;
528 cache_ptr->addend = 0;
531 /* in a.out symbols are relative to the beginning of the
532 * file rather than sections ?
533 * (look in translate_from_native_sym_flags)
534 * the reloc entry addend has added to it the offset into the
535 * file of the data, so subtract the base to make the reloc
536 * section relative */
539 /* sign-extend symnum from 24 bits to whatever host uses */
544 cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
549 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr;
550 cache_ptr->addend = - obj_textsec(abfd)->vma;
554 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr;
555 cache_ptr->addend = - obj_datasec(abfd)->vma;
559 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
560 cache_ptr->addend = - obj_bsssec(abfd)->vma;
564 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
565 cache_ptr->addend = 0;
567 case -2: /* .align */
568 if (raw[7] & pcrel_mask)
570 cache_ptr->howto = &howto_align_table[(raw[7] >> length_shift) & 3];
571 cache_ptr->sym_ptr_ptr = &bfd_abs_symbol;
578 cache_ptr->addend = 0;
587 /* the i960 only has a few relocation types:
588 abs 32-bit and pcrel 24bit. except for callj's! */
589 if (cache_ptr->howto != 0)
591 else if (raw[7] & callj_mask)
593 cache_ptr->howto = &howto_reloc_callj;
595 else if ( raw[7] & pcrel_mask)
597 if (raw[7] & size_mask)
598 cache_ptr->howto = &howto_reloc_pcrel13;
600 cache_ptr->howto = &howto_reloc_pcrel24;
604 if (raw[7] & incode_mask)
606 cache_ptr->howto = &howto_reloc_abs32code;
610 cache_ptr->howto = &howto_reloc_abs32;
613 if (cache_ptr->address < prev_addr)
615 /* Ouch! this reloc is out of order, insert into the right place
618 arelent *cursor = cache_ptr-1;
619 bfd_vma stop = cache_ptr->address;
621 while (cursor->address > stop && cursor >= reloc_cache)
623 cursor[1] = cursor[0];
630 prev_addr = cache_ptr->address;
636 asect->relocation = reloc_cache;
637 asect->reloc_count = count;
645 b_out_squirt_out_relocs (abfd, section)
655 unsigned int count = section->reloc_count;
656 struct relocation_info *native, *natptr;
657 size_t natsize = count * sizeof (struct relocation_info);
658 int extern_mask, pcrel_mask, len_2, callj_mask;
659 if (count == 0) return true;
660 generic = section->orelocation;
661 native = ((struct relocation_info *) bfd_xmalloc (natsize));
663 bfd_error = no_memory;
667 if (abfd->xvec->header_byteorder_big_p)
669 /* Big-endian bit field allocation order */
679 /* Little-endian bit field allocation order */
688 for (natptr = native; count > 0; --count, ++natptr, ++generic)
690 arelent *g = *generic;
691 unsigned char *raw = (unsigned char *)natptr;
692 asymbol *sym = *(g->sym_ptr_ptr);
694 asection *output_section = sym->section->output_section;
695 bfd_h_put_32(abfd, g->address, raw);
696 /* Find a type in the output format which matches the input howto -
697 * at the moment we assume input format == output format FIXME!!
699 /* FIXME: Need callj stuff here, and to check the howto entries to
700 be sure they are real for this architecture. */
701 if (g->howto== &howto_reloc_callj)
703 raw[7] = callj_mask + pcrel_mask + len_2;
705 else if (g->howto == &howto_reloc_pcrel24)
707 raw[7] = pcrel_mask + len_2;
709 else if (g->howto == &howto_reloc_pcrel13)
711 raw[7] = pcrel_mask + len_1;
713 else if (g->howto == &howto_reloc_abs32code)
715 raw[7] = len_2 + incode_mask;
720 if (output_section == &bfd_com_section
721 || output_section == &bfd_abs_section
722 || output_section == &bfd_und_section)
725 if (bfd_abs_section.symbol == sym)
727 /* Whoops, looked like an abs symbol, but is really an offset
728 from the abs section */
737 r_idx = stoi((*(g->sym_ptr_ptr))->flags);
742 /* Just an ordinary section */
744 r_idx = output_section->target_index;
747 if (abfd->xvec->header_byteorder_big_p) {
748 raw[4] = (unsigned char) (r_idx >> 16);
749 raw[5] = (unsigned char) (r_idx >> 8);
750 raw[6] = (unsigned char) (r_idx );
752 raw[6] = (unsigned char) (r_idx >> 16);
753 raw[5] = (unsigned char) (r_idx>> 8);
754 raw[4] = (unsigned char) (r_idx );
757 raw[7] |= extern_mask;
760 if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
769 /* This is stupid. This function should be a boolean predicate */
771 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
777 arelent *tblptr = section->relocation;
778 unsigned int count = 0;
780 if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
781 tblptr = section->relocation;
782 if (!tblptr) return 0;
784 for (; count++ < section->reloc_count;)
785 *relptr++ = tblptr++;
789 return section->reloc_count;
793 b_out_get_reloc_upper_bound (abfd, asect)
797 if (bfd_get_format (abfd) != bfd_object) {
798 bfd_error = invalid_operation;
802 if (asect == obj_datasec (abfd))
803 return (sizeof (arelent *) *
804 ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
807 if (asect == obj_textsec (abfd))
808 return (sizeof (arelent *) *
809 ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
812 bfd_error = invalid_operation;
817 b_out_set_section_contents (abfd, section, location, offset, count)
820 unsigned char *location;
825 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
826 if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
827 (obj_textsec (abfd)->_cooked_size == 0) || (obj_datasec (abfd)->_cooked_size == 0)*/) {
828 bfd_error = invalid_operation;
832 obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
833 obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
834 + obj_textsec (abfd)->_raw_size;
837 /* regardless, once we know what we're doing, we might as well get going */
838 bfd_seek (abfd, section->filepos + offset, SEEK_SET);
841 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
847 b_out_set_arch_mach (abfd, arch, machine)
849 enum bfd_architecture arch;
850 unsigned long machine;
852 bfd_default_set_arch_mach(abfd, arch, machine);
854 if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
856 if (arch == bfd_arch_i960) /* i960 default is OK */
858 case bfd_mach_i960_core:
859 case bfd_mach_i960_kb_sb:
860 case bfd_mach_i960_mc:
861 case bfd_mach_i960_xa:
862 case bfd_mach_i960_ca:
863 case bfd_mach_i960_ka_sa:
874 DEFUN(b_out_sizeof_headers,(ignore_abfd, ignore),
878 return sizeof(struct internal_exec);
883 /************************************************************************/
885 DEFUN(get_value,(reloc, seclet),
887 bfd_seclet_type *seclet)
890 asymbol *symbol = *(reloc->sym_ptr_ptr);
892 /* A symbol holds a pointer to a section, and an offset from the
893 base of the section. To relocate, we find where the section will
894 live in the output and add that in */
896 if (symbol->section == &bfd_und_section)
898 /* Ouch, this is an undefined symbol.. */
899 bfd_error_vector.undefined_symbol(reloc, seclet);
900 value = symbol->value;
904 value = symbol->value +
905 symbol->section->output_offset +
906 symbol->section->output_section->vma;
909 /* Add the value contained in the relocation */
910 value += (short)((reloc->addend) & 0xffff);
916 DEFUN(perform_slip,(s, slip, input_section, value),
918 unsigned int slip AND
919 asection *input_section AND
923 /* Find all symbols past this point, and make them know
928 if (p->section == input_section)
930 /* This was pointing into this section, so mangle it */
931 if (p->value > value)
941 /* This routine works out if the thing we want to get to can be
942 reached with a 24bit offset instead of a 32 bit one.
943 If it can, then it changes the amode */
946 DEFUN(abs32code,(input_section, symbols, r, shrink),
947 asection *input_section AND
948 asymbol **symbols AND
952 bfd_vma value = get_value(r,0);
953 bfd_vma dot = input_section->output_section->vma + input_section->output_offset + r->address;
956 /* See if the address we're looking at within 2^23 bytes of where
957 we are, if so then we can use a small branch rather than the
958 jump we were going to */
960 gap = value - (dot - shrink);
963 if (-1<<23 < (long)gap && (long)gap < 1<<23 )
965 /* Change the reloc type from 32bitcode possible 24, to 24bit
968 r->howto = &howto_reloc_abs32codeshrunk;
969 /* The place to relc moves back by four bytes */
972 /* This will be four bytes smaller in the long run */
974 perform_slip(symbols, 4, input_section, r->address-shrink +4);
980 DEFUN(aligncode,(input_section, symbols, r, shrink),
981 asection *input_section AND
982 asymbol **symbols AND
986 bfd_vma dot = input_section->output_section->vma + input_section->output_offset + r->address;
991 int size = r->howto->size;
993 /* Reduce the size of the alignment so that it's still aligned but
994 smaller - the current size is already the same size as or bigger
995 than the alignment required. */
997 /* calculate the first byte following the padding before we optimize */
998 old_end = ((dot + size ) & ~size) + size+1;
999 /* work out where the new end will be - remember that we're smaller
1000 than we used to be */
1001 new_end = ((dot - shrink + size) & ~size);
1003 /* This is the new end */
1004 gap = old_end - ((dot + size) & ~size);
1006 shrink_delta = (old_end - new_end) - shrink;
1010 /* Change the reloc so that it knows how far to align to */
1011 r->howto = howto_done_align_table + (r->howto - howto_align_table);
1013 /* Encode the stuff into the addend - for future use we need to
1014 know how big the reloc used to be */
1015 r->addend = old_end ;
1017 /* This will be N bytes smaller in the long run, adjust all the symbols */
1018 perform_slip(symbols, shrink_delta, input_section, r->address - shrink );
1019 shrink += shrink_delta;
1026 DEFUN(b_out_relax_section,(abfd, i, symbols),
1032 /* Get enough memory to hold the stuff */
1033 bfd *input_bfd = i->owner;
1034 asection *input_section = i;
1036 boolean new = false;
1038 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
1040 arelent **reloc_vector = (arelent **)alloca(reloc_size);
1042 /* Get the relocs and think about them */
1043 if (bfd_canonicalize_reloc(input_bfd,
1049 for (parent = reloc_vector; *parent; parent++)
1051 arelent *r = *parent;
1052 switch (r->howto->type) {
1054 /* An alignment reloc */
1055 shrink = aligncode(input_section, symbols, r,shrink);
1059 /* A 32bit reloc in an addressing mode */
1060 shrink = abs32code(input_section, symbols, r,shrink);
1063 case ABS32CODE_SHRUNK:
1069 input_section->_cooked_size = input_section->_raw_size - shrink;
1076 DEFUN(b_out_get_relocated_section_contents,(in_abfd, seclet, data),
1078 bfd_seclet_type *seclet AND
1082 /* Get enough memory to hold the stuff */
1083 bfd *input_bfd = seclet->u.indirect.section->owner;
1084 asection *input_section = seclet->u.indirect.section;
1085 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
1087 arelent **reloc_vector = (arelent **)alloca(reloc_size);
1089 /* read in the section */
1090 bfd_get_section_contents(input_bfd,
1094 input_section->_raw_size);
1097 if (bfd_canonicalize_reloc(input_bfd,
1100 seclet->u.indirect.symbols) )
1102 arelent **parent = reloc_vector;
1107 unsigned int dst_address = 0;
1108 unsigned int src_address = 0;
1112 /* Find how long a run we can do */
1113 while (dst_address < seclet->size)
1119 /* Note that the relaxing didn't tie up the addresses in the
1120 relocation, so we use the original address to work out the
1121 run of non-relocated data */
1122 run = reloc->address - src_address;
1128 run = seclet->size - dst_address;
1130 /* Copy the bytes */
1131 for (idx = 0; idx < run; idx++)
1133 data[dst_address++] = data[src_address++];
1136 /* Now do the relocation */
1140 switch (reloc->howto->type)
1143 calljx_callback(in_abfd, reloc, src_address + data, dst_address+data, input_section);
1148 bfd_put_32(in_abfd, get_value(reloc, seclet), data+dst_address);
1153 callj_callback(in_abfd, reloc ,data,src_address,dst_address,input_section);
1158 src_address = reloc->addend;
1159 dst_address = (dst_address + reloc->howto->size) & ~reloc->howto->size;
1161 case ABS32CODE_SHRUNK:
1162 /* This used to be a callx, but we've found out that a
1163 callj will reach, so do the right thing */
1164 callj_callback(in_abfd, reloc,data,src_address+4, dst_address,input_section);
1171 long int word = bfd_get_32(in_abfd, data+src_address);
1172 asymbol *symbol = *(reloc->sym_ptr_ptr);
1173 word = (word & ~BAL_MASK) |
1174 (((word & BAL_MASK) +
1175 symbol->section->output_offset +
1176 symbol->section->output_section->vma+
1177 symbol->value + reloc->addend - dst_address -
1178 ( input_section->output_section->vma + input_section->output_offset))
1181 bfd_put_32(in_abfd,word, data+dst_address);
1190 long int word = bfd_get_32(in_abfd, data+src_address);
1191 asymbol *symbol = *(reloc->sym_ptr_ptr);
1192 word = (word & ~PCREL13_MASK) |
1193 (((word & PCREL13_MASK) +
1194 symbol->section->output_offset +
1195 symbol->section->output_section->vma+
1196 symbol->value + reloc->addend - dst_address -
1197 ( input_section->output_section->vma + input_section->output_offset))
1200 bfd_put_32(in_abfd,word, data+dst_address);
1216 /***********************************************************************/
1218 /* Build the transfer vectors for Big and Little-Endian B.OUT files. */
1220 /* We don't have core files. */
1221 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
1222 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
1223 #define aout_32_core_file_matches_executable_p \
1224 _bfd_dummy_core_file_matches_executable_p
1226 /* We use BSD-Unix generic archive files. */
1227 #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
1228 #define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt
1229 #define aout_32_slurp_armap bfd_slurp_bsd_armap
1230 #define aout_32_slurp_extended_name_table bfd_true
1231 #define aout_32_write_armap bsd_write_armap
1232 #define aout_32_truncate_arname bfd_bsd_truncate_arname
1234 /* We override these routines from the usual a.out file routines. */
1235 #define aout_32_canonicalize_reloc b_out_canonicalize_reloc
1236 #define aout_32_get_reloc_upper_bound b_out_get_reloc_upper_bound
1237 #define aout_32_set_section_contents b_out_set_section_contents
1238 #define aout_32_set_arch_mach b_out_set_arch_mach
1239 #define aout_32_sizeof_headers b_out_sizeof_headers
1241 #define aout_32_bfd_debug_info_start bfd_void
1242 #define aout_32_bfd_debug_info_end bfd_void
1243 #define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
1245 #define aout_32_bfd_get_relocated_section_contents b_out_get_relocated_section_contents
1246 #define aout_32_bfd_relax_section b_out_relax_section
1248 bfd_target b_out_vec_big_host =
1250 "b.out.big", /* name */
1251 bfd_target_aout_flavour,
1252 false, /* data byte order is little */
1253 true, /* hdr byte order is big */
1254 (HAS_RELOC | EXEC_P | /* object flags */
1255 HAS_LINENO | HAS_DEBUG |
1256 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
1257 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1258 '_', /* symbol leading char */
1259 ' ', /* ar_pad_char */
1260 16, /* ar_max_namelen */
1261 2, /* minumum alignment power */
1263 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
1264 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
1265 {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
1266 bfd_generic_archive_p, _bfd_dummy_target},
1267 {bfd_false, b_out_mkobject, /* bfd_set_format */
1268 _bfd_generic_mkarchive, bfd_false},
1269 {bfd_false, b_out_write_object_contents, /* bfd_write_contents */
1270 _bfd_write_archive_contents, bfd_false},
1272 JUMP_TABLE(aout_32),
1273 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
1274 b_out_reloc_type_lookup,
1278 bfd_target b_out_vec_little_host =
1280 "b.out.little", /* name */
1281 bfd_target_aout_flavour,
1282 false, /* data byte order is little */
1283 false, /* header byte order is little */
1284 (HAS_RELOC | EXEC_P | /* object flags */
1285 HAS_LINENO | HAS_DEBUG |
1286 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
1287 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1288 '_', /* symbol leading char */
1289 ' ', /* ar_pad_char */
1290 16, /* ar_max_namelen */
1291 2, /* minum align */
1292 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
1293 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
1295 {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
1296 bfd_generic_archive_p, _bfd_dummy_target},
1297 {bfd_false, b_out_mkobject, /* bfd_set_format */
1298 _bfd_generic_mkarchive, bfd_false},
1299 {bfd_false, b_out_write_object_contents, /* bfd_write_contents */
1300 _bfd_write_archive_contents, bfd_false},
1301 JUMP_TABLE(aout_32),
1302 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
1303 b_out_reloc_type_lookup,