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, 0L, 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)
248 (long)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET);
250 aout_32_write_syms (abfd);
252 bfd_seek (abfd, (long)(N_TROFF(*exec_hdr(abfd))), SEEK_SET);
254 if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
255 bfd_seek (abfd, (long)(N_DROFF(*exec_hdr(abfd))), SEEK_SET);
257 if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
262 /** Some reloc hackery */
264 #define CALLS 0x66003800 /* Template for 'calls' instruction */
265 #define BAL 0x0b000000 /* Template for 'bal' instruction */
266 #define BALX 0x85000000 /* Template for 'balx' instruction */
267 #define BAL_MASK 0x00ffffff
268 #define CALL 0x09000000
269 #define PCREL13_MASK 0x1fff
270 /* Magic to turn callx into calljx */
271 static bfd_reloc_status_type
272 DEFUN (calljx_callback, (abfd, reloc_entry, src, dst, input_section),
274 arelent *reloc_entry AND
278 asection *input_section)
280 int word = bfd_get_32(abfd, src);
281 asymbol *symbol_in = *(reloc_entry->sym_ptr_ptr);
282 aout_symbol_type *symbol = aout_symbol(symbol_in);
284 if (IS_CALLNAME(symbol->other))
287 aout_symbol_type *balsym = symbol+1;
288 int inst = bfd_get_32(abfd, (bfd_byte *) src-4);
289 /* The next symbol should be an N_BALNAME */
290 BFD_ASSERT(IS_BALNAME(balsym->other));
293 bfd_put_32(abfd, inst, (bfd_byte *) dst-4);
297 word += symbol->symbol.section->output_offset +
298 symbol->symbol.section->output_section->vma +
299 symbol->symbol.value + reloc_entry->addend;
301 bfd_put_32(abfd, word, dst);
306 /* Magic to turn call into callj */
307 static bfd_reloc_status_type
308 DEFUN (callj_callback, (abfd, reloc_entry, data, srcidx,dstidx, input_section),
310 arelent *reloc_entry AND
312 unsigned int srcidx AND
313 unsigned int dstidx AND
314 asection *input_section )
316 int word = bfd_get_32(abfd, (bfd_byte *) data + srcidx);
317 asymbol *symbol_in = *(reloc_entry->sym_ptr_ptr);
319 aout_symbol_type *symbol = aout_symbol(symbol_in);
321 if (IS_OTHER(symbol->other))
323 /* Call to a system procedure - replace code with system
325 word = CALLS | (symbol->other - 1);
329 else if (IS_CALLNAME(symbol->other))
331 aout_symbol_type *balsym = symbol+1;
332 /* The next symbol should be an N_BALNAME */
333 BFD_ASSERT(IS_BALNAME(balsym->other));
335 /* We are calling a leaf - so replace the call instruction
339 (((word & BAL_MASK) +
340 balsym->symbol.section->output_offset +
341 balsym->symbol.section->output_section->vma+
342 balsym->symbol.value + reloc_entry->addend - dstidx -
343 ( input_section->output_section->vma + input_section->output_offset))
352 (((word & BAL_MASK) +
353 symbol->symbol.section->output_offset +
354 symbol->symbol.section->output_section->vma+
355 symbol->symbol.value + reloc_entry->addend - dstidx -
356 ( input_section->output_section->vma + input_section->output_offset))
359 bfd_put_32(abfd, word, (bfd_byte *) data + dstidx);
363 /* type rshift size bitsize pcrel bitpos absolute overflow check*/
366 #define ABS32CODE_SHRUNK 1
371 #define ABS32_MAYBE_RELAXABLE 1
372 #define ABS32_WAS_RELAXABLE 2
376 static reloc_howto_type howto_reloc_callj =
377 HOWTO(CALLJ, 0, 2, 24, true, 0, true, true, 0,"callj", true, 0x00ffffff, 0x00ffffff,false);
378 static reloc_howto_type howto_reloc_abs32 =
379 HOWTO(ABS32, 0, 2, 32, false, 0, true, true,0,"abs32", true, 0xffffffff,0xffffffff,false);
380 static reloc_howto_type howto_reloc_pcrel24 =
381 HOWTO(PCREL24, 0, 2, 24, true, 0, true, true,0,"pcrel24", true, 0x00ffffff,0x00ffffff,false);
383 static reloc_howto_type howto_reloc_pcrel13 =
384 HOWTO(PCREL13, 0, 2, 13, true, 0, true, true,0,"pcrel13", true, 0x00001fff,0x00001fff,false);
387 static reloc_howto_type howto_reloc_abs32codeshrunk =
388 HOWTO(ABS32CODE_SHRUNK, 0, 2, 24, true, 0, true, true, 0,"callx->callj", true, 0x00ffffff, 0x00ffffff,false);
390 static reloc_howto_type howto_reloc_abs32code =
391 HOWTO(ABS32CODE, 0, 2, 32, false, 0, true, true,0,"callx", true, 0xffffffff,0xffffffff,false);
393 static reloc_howto_type howto_align_table[] = {
394 HOWTO (ALIGN, 0, 0x1, 0, 0, 0, 0, 0, 0, "align16", 0, 0, 0, 0),
395 HOWTO (ALIGN, 0, 0x3, 0, 0, 0, 0, 0, 0, "align32", 0, 0, 0, 0),
396 HOWTO (ALIGN, 0, 0x7, 0, 0, 0, 0, 0, 0, "align64", 0, 0, 0, 0),
397 HOWTO (ALIGN, 0, 0xf, 0, 0, 0, 0, 0, 0, "align128", 0, 0, 0, 0),
400 static reloc_howto_type howto_done_align_table[] = {
401 HOWTO (ALIGNDONE, 0x1, 0x1, 0, 0, 0, 0, 0, 0, "donealign16", 0, 0, 0,0),
402 HOWTO (ALIGNDONE, 0x3, 0x3, 0, 0, 0, 0, 0, 0, "donealign32", 0, 0, 0,0),
403 HOWTO (ALIGNDONE, 0x7, 0x7, 0, 0, 0, 0, 0, 0, "donealign64", 0, 0, 0,0),
404 HOWTO (ALIGNDONE, 0xf, 0xf, 0, 0, 0, 0, 0, 0, "donealign128", 0, 0, 0,0),
408 static reloc_howto_type *
409 b_out_reloc_type_lookup (abfd, code)
411 bfd_reloc_code_real_type code;
417 case BFD_RELOC_I960_CALLJ:
418 return &howto_reloc_callj;
420 return &howto_reloc_abs32;
421 case BFD_RELOC_24_PCREL:
422 return &howto_reloc_pcrel24;
426 /* Allocate enough room for all the reloc entries, plus pointers to them all */
429 b_out_slurp_reloc_table (abfd, asect, symbols)
434 register struct relocation_info *rptr;
435 unsigned int counter ;
437 int extern_mask, pcrel_mask, callj_mask, length_shift;
440 bfd_vma prev_addr = 0;
443 struct relocation_info *relocs;
444 arelent *reloc_cache;
446 if (asect->relocation) return true;
447 if (!aout_32_slurp_symbol_table (abfd)) return false;
449 if (asect == obj_datasec (abfd)) {
450 reloc_size = exec_hdr(abfd)->a_drsize;
454 if (asect == obj_textsec (abfd)) {
455 reloc_size = exec_hdr(abfd)->a_trsize;
459 bfd_error = invalid_operation;
463 bfd_seek (abfd, (long)(asect->rel_filepos), SEEK_SET);
464 count = reloc_size / sizeof (struct relocation_info);
466 relocs = (struct relocation_info *) bfd_xmalloc (reloc_size);
468 bfd_error = no_memory;
471 reloc_cache = (arelent *) bfd_xmalloc ((count+1) * sizeof (arelent));
473 free ((char*)relocs);
474 bfd_error = no_memory;
478 if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
479 bfd_error = system_call_error;
487 if (abfd->xvec->header_byteorder_big_p) {
488 /* big-endian bit field allocation order */
496 /* little-endian bit field allocation order */
505 for (rptr = relocs, cache_ptr = reloc_cache, counter = 0;
507 counter++, rptr++, cache_ptr++)
509 unsigned char *raw = (unsigned char *)rptr;
511 cache_ptr->address = bfd_h_get_32 (abfd, raw + 0);
512 if (abfd->xvec->header_byteorder_big_p)
514 symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
518 symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
521 if (raw[7] & extern_mask)
523 /* if this is set then the r_index is a index into the symbol table;
524 * if the bit is not set then r_index contains a section map.
525 * we either fill in the sym entry with a pointer to the symbol,
526 * or point to the correct section
528 cache_ptr->sym_ptr_ptr = symbols + symnum;
529 cache_ptr->addend = 0;
532 /* in a.out symbols are relative to the beginning of the
533 * file rather than sections ?
534 * (look in translate_from_native_sym_flags)
535 * the reloc entry addend has added to it the offset into the
536 * file of the data, so subtract the base to make the reloc
537 * section relative */
540 /* sign-extend symnum from 24 bits to whatever host uses */
545 cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
550 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr;
551 cache_ptr->addend = - obj_textsec(abfd)->vma;
555 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr;
556 cache_ptr->addend = - obj_datasec(abfd)->vma;
560 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
561 cache_ptr->addend = - obj_bsssec(abfd)->vma;
565 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
566 cache_ptr->addend = 0;
568 case -2: /* .align */
569 if (raw[7] & pcrel_mask)
571 cache_ptr->howto = &howto_align_table[(raw[7] >> length_shift) & 3];
572 cache_ptr->sym_ptr_ptr = &bfd_abs_symbol;
579 cache_ptr->addend = 0;
588 /* the i960 only has a few relocation types:
589 abs 32-bit and pcrel 24bit. except for callj's! */
590 if (cache_ptr->howto != 0)
592 else if (raw[7] & callj_mask)
594 cache_ptr->howto = &howto_reloc_callj;
596 else if ( raw[7] & pcrel_mask)
598 if (raw[7] & size_mask)
599 cache_ptr->howto = &howto_reloc_pcrel13;
601 cache_ptr->howto = &howto_reloc_pcrel24;
605 if (raw[7] & incode_mask)
607 cache_ptr->howto = &howto_reloc_abs32code;
611 cache_ptr->howto = &howto_reloc_abs32;
614 if (cache_ptr->address < prev_addr)
616 /* Ouch! this reloc is out of order, insert into the right place
619 arelent *cursor = cache_ptr-1;
620 unsigned int where = counter;
621 bfd_vma stop = cache_ptr->address;
623 while (cursor->address > stop && cursor >= reloc_cache)
625 cursor[1] = cursor[0];
632 prev_addr = cache_ptr->address;
638 asect->relocation = reloc_cache;
639 asect->reloc_count = count;
647 b_out_squirt_out_relocs (abfd, section)
658 unsigned int count = section->reloc_count;
659 struct relocation_info *native, *natptr;
660 size_t natsize = count * sizeof (struct relocation_info);
661 int extern_mask, pcrel_mask, len_2, callj_mask;
663 if (count == 0) return true;
664 generic = section->orelocation;
665 native = ((struct relocation_info *) bfd_xmalloc (natsize));
667 bfd_error = no_memory;
671 if (abfd->xvec->header_byteorder_big_p)
673 /* Big-endian bit field allocation order */
683 /* Little-endian bit field allocation order */
692 for (natptr = native; count > 0; --count, ++natptr, ++generic)
694 arelent *g = *generic;
695 unsigned char *raw = (unsigned char *)natptr;
696 asymbol *sym = *(g->sym_ptr_ptr);
698 asection *output_section = sym->section->output_section;
699 bfd_h_put_32(abfd, g->address, raw);
700 /* Find a type in the output format which matches the input howto -
701 * at the moment we assume input format == output format FIXME!!
703 /* FIXME: Need callj stuff here, and to check the howto entries to
704 be sure they are real for this architecture. */
705 if (g->howto== &howto_reloc_callj)
707 raw[7] = callj_mask + pcrel_mask + len_2;
709 else if (g->howto == &howto_reloc_pcrel24)
711 raw[7] = pcrel_mask + len_2;
713 else if (g->howto == &howto_reloc_pcrel13)
715 raw[7] = pcrel_mask + len_1;
717 else if (g->howto == &howto_reloc_abs32code)
719 raw[7] = len_2 + incode_mask;
724 if (output_section == &bfd_com_section
725 || output_section == &bfd_abs_section
726 || output_section == &bfd_und_section)
730 r_idx = stoi((*(g->sym_ptr_ptr))->flags);
734 /* Just an ordinary section */
736 r_idx = output_section->target_index;
739 if (abfd->xvec->header_byteorder_big_p) {
740 raw[4] = (unsigned char) (r_idx >> 16);
741 raw[5] = (unsigned char) (r_idx >> 8);
742 raw[6] = (unsigned char) (r_idx );
744 raw[6] = (unsigned char) (r_idx >> 16);
745 raw[5] = (unsigned char) (r_idx>> 8);
746 raw[4] = (unsigned char) (r_idx );
749 raw[7] |= extern_mask;
752 if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
761 /* This is stupid. This function should be a boolean predicate */
763 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
769 arelent *tblptr = section->relocation;
770 unsigned int count = 0;
772 if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
773 tblptr = section->relocation;
774 if (!tblptr) return 0;
776 for (; count++ < section->reloc_count;)
777 *relptr++ = tblptr++;
781 return section->reloc_count;
785 b_out_get_reloc_upper_bound (abfd, asect)
789 if (bfd_get_format (abfd) != bfd_object) {
790 bfd_error = invalid_operation;
794 if (asect == obj_datasec (abfd))
795 return (sizeof (arelent *) *
796 ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
799 if (asect == obj_textsec (abfd))
800 return (sizeof (arelent *) *
801 ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
804 bfd_error = invalid_operation;
809 b_out_set_section_contents (abfd, section, location, offset, count)
812 unsigned char *location;
817 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
818 if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
819 (obj_textsec (abfd)->_cooked_size == 0) || (obj_datasec (abfd)->_cooked_size == 0)*/) {
820 bfd_error = invalid_operation;
824 obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
825 obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
826 + obj_textsec (abfd)->_raw_size;
829 /* regardless, once we know what we're doing, we might as well get going */
830 bfd_seek (abfd, section->filepos + offset, SEEK_SET);
833 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
839 b_out_set_arch_mach (abfd, arch, machine)
841 enum bfd_architecture arch;
842 unsigned long machine;
844 bfd_default_set_arch_mach(abfd, arch, machine);
846 if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
848 if (arch == bfd_arch_i960) /* i960 default is OK */
850 case bfd_mach_i960_core:
851 case bfd_mach_i960_kb_sb:
852 case bfd_mach_i960_mc:
853 case bfd_mach_i960_xa:
854 case bfd_mach_i960_ca:
855 case bfd_mach_i960_ka_sa:
866 DEFUN(b_out_sizeof_headers,(ignore_abfd, ignore),
870 return sizeof(struct internal_exec);
875 /************************************************************************/
877 DEFUN(get_value,(reloc, seclet),
879 bfd_seclet_type *seclet)
882 asymbol *symbol = *(reloc->sym_ptr_ptr);
883 /* A symbol holds a pointer to a section, and an offset from the
884 base of the section. To relocate, we find where the section will
885 live in the output and add that in */
887 if (symbol->section == &bfd_und_section)
889 /* Ouch, this is an undefined symbol.. */
890 bfd_error_vector.undefined_symbol(reloc, seclet);
891 value = symbol->value;
895 value = symbol->value +
896 symbol->section->output_offset +
897 symbol->section->output_section->vma;
901 /* Add the value contained in the relocation */
902 value += (short)((reloc->addend) & 0xffff);
908 DEFUN(perform_slip,(s, slip, input_section, value),
910 unsigned int slip AND
911 asection *input_section AND
915 /* Find all symbols past this point, and make them know
920 if (p->section == input_section)
922 /* This was pointing into this section, so mangle it */
923 if (p->value > value)
933 /* This routine works out if the thing we want to get to can be
934 reached with a 24bit offset instead of a 32 bit one.
935 If it can, then it changes the amode */
938 DEFUN(abs32code,(input_section, symbols, r, shrink),
939 asection *input_section AND
940 asymbol **symbols AND
944 bfd_vma value = get_value(r,0);
945 bfd_vma dot = input_section->output_section->vma + input_section->output_offset + r->address;
948 /* See if the address we're looking at within 2^23 bytes of where
949 we are, if so then we can use a small branch rather than the
950 jump we were going to */
952 gap = value - (dot - shrink);
955 if (-1<<23 < (long)gap && (long)gap < 1<<23 )
958 /* Change the reloc type from 32bitcode possible 24, to 24bit
961 r->howto = &howto_reloc_abs32codeshrunk;
962 /* The place to relc moves back by four bytes */
965 /* This will be four bytes smaller in the long run */
967 perform_slip(symbols, 4, input_section, r->address-shrink +4);
975 DEFUN(aligncode,(input_section, symbols, r, shrink),
976 asection *input_section AND
977 asymbol **symbols AND
981 bfd_vma value = get_value(r,0);
984 bfd_vma dot = input_section->output_section->vma + input_section->output_offset + r->address;
990 int size = r->howto->size;
991 /* Reduce the size of the alignment so that it's still aligned but
992 smaller - the current size is already the same size as or bigger
993 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;
1011 /* Change the reloc so that it knows how far to align to */
1012 r->howto = howto_done_align_table + (r->howto - howto_align_table);
1014 /* Encode the stuff into the addend - for future use we need to
1015 know how big the reloc used to be */
1016 r->addend = old_end ;
1018 /* This will be N bytes smaller in the long run, adjust all the symbols */
1022 perform_slip(symbols, shrink_delta, input_section, r->address - shrink );
1023 shrink += shrink_delta;
1030 DEFUN(b_out_relax_section,(abfd, i, symbols),
1036 /* Get enough memory to hold the stuff */
1037 bfd *input_bfd = i->owner;
1038 asection *input_section = i;
1040 boolean new = false;
1042 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
1044 arelent **reloc_vector = (arelent **)alloca(reloc_size);
1046 /* Get the relocs and think about them */
1047 if (bfd_canonicalize_reloc(input_bfd,
1053 for (parent = reloc_vector; *parent; parent++)
1055 arelent *r = *parent;
1056 switch (r->howto->type) {
1058 /* An alignment reloc */
1059 shrink = aligncode(input_section, symbols, r,shrink);
1063 /* A 32bit reloc in an addressing mode */
1064 shrink = abs32code(input_section, symbols, r,shrink);
1067 case ABS32CODE_SHRUNK:
1073 input_section->_cooked_size = input_section->_raw_size - shrink;
1080 DEFUN(b_out_get_relocated_section_contents,(in_abfd, seclet, data),
1082 bfd_seclet_type *seclet AND
1086 /* Get enough memory to hold the stuff */
1087 bfd *input_bfd = seclet->u.indirect.section->owner;
1088 asection *input_section = seclet->u.indirect.section;
1089 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
1091 arelent **reloc_vector = (arelent **)alloca(reloc_size);
1093 /* read in the section */
1094 bfd_get_section_contents(input_bfd,
1098 input_section->_raw_size);
1101 if (bfd_canonicalize_reloc(input_bfd,
1104 seclet->u.indirect.symbols) )
1106 arelent **parent = reloc_vector;
1111 unsigned int dst_address = 0;
1112 unsigned int src_address = 0;
1116 /* Find how long a run we can do */
1117 while (dst_address < seclet->size)
1123 /* Note that the relaxing didn't tie up the addresses in the
1124 relocation, so we use the original address to work out the
1125 run of non-relocated data */
1126 run = reloc->address - src_address;
1132 run = seclet->size - dst_address;
1134 /* Copy the bytes */
1135 for (idx = 0; idx < run; idx++)
1137 data[dst_address++] = data[src_address++];
1140 /* Now do the relocation */
1144 switch (reloc->howto->type)
1147 calljx_callback(in_abfd, reloc, src_address + data, dst_address+data, input_section);
1152 bfd_put_32(in_abfd, get_value(reloc, seclet), data+dst_address);
1157 callj_callback(in_abfd, reloc ,data,src_address,dst_address,input_section);
1162 src_address = reloc->addend;
1163 dst_address = (dst_address + reloc->howto->size) & ~reloc->howto->size;
1165 case ABS32CODE_SHRUNK:
1166 /* This used to be a callx, but we've found out that a
1167 callj will reach, so do the right thing */
1168 callj_callback(in_abfd, reloc,data,src_address+4, dst_address,input_section);
1175 long int word = bfd_get_32(in_abfd, data+src_address);
1176 asymbol *symbol = *(reloc->sym_ptr_ptr);
1177 word = (word & ~BAL_MASK) |
1178 (((word & BAL_MASK) +
1179 symbol->section->output_offset +
1180 symbol->section->output_section->vma+
1181 symbol->value + reloc->addend - dst_address -
1182 ( input_section->output_section->vma + input_section->output_offset))
1185 bfd_put_32(in_abfd,word, data+dst_address);
1194 long int word = bfd_get_32(in_abfd, data+src_address);
1195 asymbol *symbol = *(reloc->sym_ptr_ptr);
1196 word = (word & ~PCREL13_MASK) |
1197 (((word & PCREL13_MASK) +
1198 symbol->section->output_offset +
1199 symbol->section->output_section->vma+
1200 symbol->value + reloc->addend - dst_address -
1201 ( input_section->output_section->vma + input_section->output_offset))
1204 bfd_put_32(in_abfd,word, data+dst_address);
1220 /***********************************************************************/
1222 /* Build the transfer vectors for Big and Little-Endian B.OUT files. */
1224 /* We don't have core files. */
1225 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
1226 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
1227 #define aout_32_core_file_matches_executable_p \
1228 _bfd_dummy_core_file_matches_executable_p
1230 /* We use BSD-Unix generic archive files. */
1231 #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
1232 #define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt
1233 #define aout_32_slurp_armap bfd_slurp_bsd_armap
1234 #define aout_32_slurp_extended_name_table bfd_true
1235 #define aout_32_write_armap bsd_write_armap
1236 #define aout_32_truncate_arname bfd_bsd_truncate_arname
1238 /* We override these routines from the usual a.out file routines. */
1239 #define aout_32_canonicalize_reloc b_out_canonicalize_reloc
1240 #define aout_32_get_reloc_upper_bound b_out_get_reloc_upper_bound
1241 #define aout_32_set_section_contents b_out_set_section_contents
1242 #define aout_32_set_arch_mach b_out_set_arch_mach
1243 #define aout_32_sizeof_headers b_out_sizeof_headers
1245 #define aout_32_bfd_debug_info_start bfd_void
1246 #define aout_32_bfd_debug_info_end bfd_void
1247 #define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
1249 #define aout_32_bfd_get_relocated_section_contents b_out_get_relocated_section_contents
1250 #define aout_32_bfd_relax_section b_out_relax_section
1252 bfd_target b_out_vec_big_host =
1254 "b.out.big", /* name */
1255 bfd_target_aout_flavour,
1256 false, /* data byte order is little */
1257 true, /* hdr byte order is big */
1258 (HAS_RELOC | EXEC_P | /* object flags */
1259 HAS_LINENO | HAS_DEBUG |
1260 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
1261 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1262 ' ', /* ar_pad_char */
1263 16, /* ar_max_namelen */
1264 2, /* minumum alignment power */
1266 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
1267 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
1268 {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
1269 bfd_generic_archive_p, _bfd_dummy_target},
1270 {bfd_false, b_out_mkobject, /* bfd_set_format */
1271 _bfd_generic_mkarchive, bfd_false},
1272 {bfd_false, b_out_write_object_contents, /* bfd_write_contents */
1273 _bfd_write_archive_contents, bfd_false},
1275 JUMP_TABLE(aout_32),
1276 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
1277 b_out_reloc_type_lookup,
1281 bfd_target b_out_vec_little_host =
1283 "b.out.little", /* name */
1284 bfd_target_aout_flavour,
1285 false, /* data byte order is little */
1286 false, /* header byte order is little */
1287 (HAS_RELOC | EXEC_P | /* object flags */
1288 HAS_LINENO | HAS_DEBUG |
1289 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
1290 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1291 ' ', /* ar_pad_char */
1292 16, /* ar_max_namelen */
1293 2, /* minum align */
1294 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
1295 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
1297 {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
1298 bfd_generic_archive_p, _bfd_dummy_target},
1299 {bfd_false, b_out_mkobject, /* bfd_set_format */
1300 _bfd_generic_mkarchive, bfd_false},
1301 {bfd_false, b_out_write_object_contents, /* bfd_write_contents */
1302 _bfd_write_archive_contents, bfd_false},
1303 JUMP_TABLE(aout_32),
1304 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
1305 b_out_reloc_type_lookup,