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
374 static reloc_howto_type howto_reloc_callj =
375 HOWTO(CALLJ, 0, 2, 24, true, 0, true, true, 0,"callj", true, 0x00ffffff, 0x00ffffff,false);
376 static reloc_howto_type howto_reloc_abs32 =
377 HOWTO(ABS32, 0, 2, 32, false, 0, true, true,0,"abs32", true, 0xffffffff,0xffffffff,false);
378 static reloc_howto_type howto_reloc_pcrel24 =
379 HOWTO(PCREL24, 0, 2, 24, true, 0, true, true,0,"pcrel24", true, 0x00ffffff,0x00ffffff,false);
381 static reloc_howto_type howto_reloc_pcrel13 =
382 HOWTO(PCREL13, 0, 2, 13, true, 0, true, true,0,"pcrel13", true, 0x00001fff,0x00001fff,false);
385 static reloc_howto_type howto_reloc_abs32codeshrunk =
386 HOWTO(ABS32CODE_SHRUNK, 0, 2, 24, true, 0, true, true, 0,"callx->callj", true, 0x00ffffff, 0x00ffffff,false);
388 static reloc_howto_type howto_reloc_abs32code =
389 HOWTO(ABS32CODE, 0, 2, 32, false, 0, true, true,0,"callx", true, 0xffffffff,0xffffffff,false);
391 static reloc_howto_type *
392 b_out_reloc_type_lookup (abfd, code)
394 bfd_reloc_code_real_type code;
400 case BFD_RELOC_I960_CALLJ:
401 return &howto_reloc_callj;
403 return &howto_reloc_abs32;
404 case BFD_RELOC_24_PCREL:
405 return &howto_reloc_pcrel24;
409 /* Allocate enough room for all the reloc entries, plus pointers to them all */
412 b_out_slurp_reloc_table (abfd, asect, symbols)
417 register struct relocation_info *rptr;
418 unsigned int counter ;
420 int extern_mask, pcrel_mask, callj_mask;
423 bfd_vma prev_addr = 0;
426 struct relocation_info *relocs;
427 arelent *reloc_cache;
429 if (asect->relocation) return true;
430 if (!aout_32_slurp_symbol_table (abfd)) return false;
432 if (asect == obj_datasec (abfd)) {
433 reloc_size = exec_hdr(abfd)->a_drsize;
437 if (asect == obj_textsec (abfd)) {
438 reloc_size = exec_hdr(abfd)->a_trsize;
442 bfd_error = invalid_operation;
446 bfd_seek (abfd, (long)(asect->rel_filepos), SEEK_SET);
447 count = reloc_size / sizeof (struct relocation_info);
449 relocs = (struct relocation_info *) bfd_xmalloc (reloc_size);
451 bfd_error = no_memory;
454 reloc_cache = (arelent *) bfd_xmalloc ((count+1) * sizeof (arelent));
456 free ((char*)relocs);
457 bfd_error = no_memory;
461 if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
462 bfd_error = system_call_error;
470 if (abfd->xvec->header_byteorder_big_p) {
471 /* big-endian bit field allocation order */
478 /* little-endian bit field allocation order */
486 for (rptr = relocs, cache_ptr = reloc_cache, counter = 0;
488 counter++, rptr++, cache_ptr++)
490 unsigned char *raw = (unsigned char *)rptr;
492 cache_ptr->address = bfd_h_get_32 (abfd, raw + 0);
493 if (abfd->xvec->header_byteorder_big_p)
495 symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
499 symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
502 if (raw[7] & extern_mask)
504 /* if this is set then the r_index is a index into the symbol table;
505 * if the bit is not set then r_index contains a section map.
506 * we either fill in the sym entry with a pointer to the symbol,
507 * or point to the correct section
509 cache_ptr->sym_ptr_ptr = symbols + symnum;
510 cache_ptr->addend = 0;
513 /* in a.out symbols are relative to the beginning of the
514 * file rather than sections ?
515 * (look in translate_from_native_sym_flags)
516 * the reloc entry addend has added to it the offset into the
517 * file of the data, so subtract the base to make the reloc
518 * section relative */
519 cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
524 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr;
525 cache_ptr->addend = - obj_textsec(abfd)->vma;
529 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr;
530 cache_ptr->addend = - obj_datasec(abfd)->vma;
534 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
535 cache_ptr->addend = - obj_bsssec(abfd)->vma;
539 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
540 cache_ptr->addend = 0;
549 /* the i960 only has a few relocation types:
550 abs 32-bit and pcrel 24bit. except for callj's! */
551 if (raw[7] & callj_mask)
553 cache_ptr->howto = &howto_reloc_callj;
555 else if ( raw[7] & pcrel_mask)
557 if (raw[7] & size_mask)
558 cache_ptr->howto = &howto_reloc_pcrel13;
560 cache_ptr->howto = &howto_reloc_pcrel24;
564 if (raw[7] & incode_mask)
566 cache_ptr->howto = &howto_reloc_abs32code;
570 cache_ptr->howto = &howto_reloc_abs32;
573 if (cache_ptr->address < prev_addr)
575 /* Ouch! this reloc is out of order, insert into the right place
578 arelent *cursor = cache_ptr-1;
579 unsigned int where = counter;
580 bfd_vma stop = cache_ptr->address;
582 while (cursor->address > stop)
584 cursor[1] = cursor[0];
591 prev_addr = cache_ptr->address;
597 asect->relocation = reloc_cache;
598 asect->reloc_count = count;
606 b_out_squirt_out_relocs (abfd, section)
617 unsigned int count = section->reloc_count;
618 struct relocation_info *native, *natptr;
619 size_t natsize = count * sizeof (struct relocation_info);
620 int extern_mask, pcrel_mask, len_2, callj_mask;
622 if (count == 0) return true;
623 generic = section->orelocation;
624 native = ((struct relocation_info *) bfd_xmalloc (natsize));
626 bfd_error = no_memory;
630 if (abfd->xvec->header_byteorder_big_p)
632 /* Big-endian bit field allocation order */
642 /* Little-endian bit field allocation order */
651 for (natptr = native; count > 0; --count, ++natptr, ++generic)
653 arelent *g = *generic;
654 unsigned char *raw = (unsigned char *)natptr;
655 asymbol *sym = *(g->sym_ptr_ptr);
657 asection *output_section = sym->section->output_section;
658 bfd_h_put_32(abfd, g->address, raw);
659 /* Find a type in the output format which matches the input howto -
660 * at the moment we assume input format == output format FIXME!!
662 /* FIXME: Need callj stuff here, and to check the howto entries to
663 be sure they are real for this architecture. */
664 if (g->howto== &howto_reloc_callj)
666 raw[7] = callj_mask + pcrel_mask + len_2;
668 else if (g->howto == &howto_reloc_pcrel24)
670 raw[7] = pcrel_mask + len_2;
672 else if (g->howto == &howto_reloc_pcrel13)
674 raw[7] = pcrel_mask + len_1;
676 else if (g->howto == &howto_reloc_abs32code)
678 raw[7] = len_2 + incode_mask;
683 if (output_section == &bfd_com_section
684 || output_section == &bfd_abs_section
685 || output_section == &bfd_und_section)
689 r_idx = stoi((*(g->sym_ptr_ptr))->flags);
693 /* Just an ordinary section */
695 r_idx = output_section->target_index;
698 if (abfd->xvec->header_byteorder_big_p) {
699 raw[4] = (unsigned char) (r_idx >> 16);
700 raw[5] = (unsigned char) (r_idx >> 8);
701 raw[6] = (unsigned char) (r_idx );
703 raw[6] = (unsigned char) (r_idx >> 16);
704 raw[5] = (unsigned char) (r_idx>> 8);
705 raw[4] = (unsigned char) (r_idx );
708 raw[7] |= extern_mask;
711 if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
720 /* This is stupid. This function should be a boolean predicate */
722 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
728 arelent *tblptr = section->relocation;
729 unsigned int count = 0;
731 if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
732 tblptr = section->relocation;
733 if (!tblptr) return 0;
735 for (; count++ < section->reloc_count;)
736 *relptr++ = tblptr++;
740 return section->reloc_count;
744 b_out_get_reloc_upper_bound (abfd, asect)
748 if (bfd_get_format (abfd) != bfd_object) {
749 bfd_error = invalid_operation;
753 if (asect == obj_datasec (abfd))
754 return (sizeof (arelent *) *
755 ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
758 if (asect == obj_textsec (abfd))
759 return (sizeof (arelent *) *
760 ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
763 bfd_error = invalid_operation;
768 b_out_set_section_contents (abfd, section, location, offset, count)
771 unsigned char *location;
776 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
777 if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
778 (obj_textsec (abfd)->_cooked_size == 0) || (obj_datasec (abfd)->_cooked_size == 0)*/) {
779 bfd_error = invalid_operation;
783 obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
784 obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
785 + obj_textsec (abfd)->_raw_size;
788 /* regardless, once we know what we're doing, we might as well get going */
789 bfd_seek (abfd, section->filepos + offset, SEEK_SET);
792 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
798 b_out_set_arch_mach (abfd, arch, machine)
800 enum bfd_architecture arch;
801 unsigned long machine;
803 bfd_default_set_arch_mach(abfd, arch, machine);
805 if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
807 if (arch == bfd_arch_i960) /* i960 default is OK */
809 case bfd_mach_i960_core:
810 case bfd_mach_i960_kb_sb:
811 case bfd_mach_i960_mc:
812 case bfd_mach_i960_xa:
813 case bfd_mach_i960_ca:
814 case bfd_mach_i960_ka_sa:
825 DEFUN(b_out_sizeof_headers,(ignore_abfd, ignore),
829 return sizeof(struct internal_exec);
834 /************************************************************************/
836 DEFUN(get_value,(reloc, seclet),
838 bfd_seclet_type *seclet)
841 asymbol *symbol = *(reloc->sym_ptr_ptr);
842 /* A symbol holds a pointer to a section, and an offset from the
843 base of the section. To relocate, we find where the section will
844 live in the output and add that in */
846 if (symbol->section == &bfd_und_section)
848 /* Ouch, this is an undefined symbol.. */
849 bfd_error_vector.undefined_symbol(reloc, seclet);
850 value = symbol->value;
854 value = symbol->value +
855 symbol->section->output_offset +
856 symbol->section->output_section->vma;
860 /* Add the value contained in the relocation */
861 value += (short)((reloc->addend) & 0xffff);
867 DEFUN(perform_slip,(s, slip, input_section, value),
869 unsigned int slip AND
870 asection *input_section AND
874 /* Find all symbols past this point, and make them know
879 if (p->section == input_section)
881 /* This was pointing into this section, so mangle it */
882 if (p->value > value)
892 /* This routine works out if the thing we want to get to can be
893 reached with a 24bit offset instead of a 32 bit one.
894 If it can, then it changes the amode */
897 DEFUN(abs32code,(input_section, symbols, r, shrink),
898 asection *input_section AND
899 asymbol **symbols AND
903 bfd_vma value = get_value(r,0);
906 bfd_vma dot = input_section->output_section->vma + input_section->output_offset + r->address;
909 /* See if the address we're looking at within 2^23 bytes of where
910 we are, if so then we can use a small branch rather than the
911 jump we were going to */
913 gap = value - (dot - shrink);
916 if (-1<<23 < (long)gap && (long)gap < 1<<23 )
919 /* Change the reloc type from 32bitcode possible 24, to 24bit
922 r->howto = &howto_reloc_abs32codeshrunk;
923 /* The place to relc moves back by four bytes */
926 /* This will be four bytes smaller in the long run */
928 perform_slip(symbols, 4, input_section, r->address-shrink +4);
937 DEFUN(b_out_relax_section,(abfd, i, symbols),
943 /* Get enough memory to hold the stuff */
944 bfd *input_bfd = i->owner;
945 asection *input_section = i;
949 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
951 arelent **reloc_vector = (arelent **)alloca(reloc_size);
953 /* Get the relocs and think about them */
954 if (bfd_canonicalize_reloc(input_bfd,
960 for (parent = reloc_vector; *parent; parent++)
962 arelent *r = *parent;
963 switch (r->howto->type) {
965 /* A 32bit reloc in an addressing mode */
966 shrink = abs32code(input_section, symbols, r,shrink);
969 case ABS32CODE_SHRUNK:
975 input_section->_cooked_size = input_section->_raw_size - shrink;
981 DEFUN(b_out_get_relocated_section_contents,(in_abfd, seclet, data),
983 bfd_seclet_type *seclet AND
987 /* Get enough memory to hold the stuff */
988 bfd *input_bfd = seclet->u.indirect.section->owner;
989 asection *input_section = seclet->u.indirect.section;
990 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
992 arelent **reloc_vector = (arelent **)alloca(reloc_size);
994 /* read in the section */
995 bfd_get_section_contents(input_bfd,
999 input_section->_raw_size);
1002 if (bfd_canonicalize_reloc(input_bfd,
1005 seclet->u.indirect.symbols) )
1007 arelent **parent = reloc_vector;
1012 unsigned int dst_address = 0;
1013 unsigned int src_address = 0;
1017 /* Find how long a run we can do */
1018 while (dst_address < seclet->size)
1024 /* Note that the relaxing didn't tie up the addresses in the
1025 relocation, so we use the original address to work out the
1026 run of non-relocated data */
1027 run = reloc->address - src_address;
1033 run = seclet->size - dst_address;
1035 /* Copy the bytes */
1036 for (idx = 0; idx < run; idx++)
1038 data[dst_address++] = data[src_address++];
1041 /* Now do the relocation */
1045 switch (reloc->howto->type)
1048 calljx_callback(in_abfd, reloc, src_address + data, dst_address+data, input_section);
1053 bfd_put_32(in_abfd, get_value(reloc, seclet), data+dst_address);
1058 callj_callback(in_abfd, reloc ,data,src_address,dst_address,input_section);
1062 case ABS32CODE_SHRUNK:
1063 /* This used to be a callx, but we've found out that a
1064 callj will reach, so do the right thing */
1065 callj_callback(in_abfd, reloc,data,src_address+4, dst_address,input_section);
1072 long int word = bfd_get_32(in_abfd, data+src_address);
1073 asymbol *symbol = *(reloc->sym_ptr_ptr);
1074 word = (word & ~BAL_MASK) |
1075 (((word & BAL_MASK) +
1076 symbol->section->output_offset +
1077 symbol->section->output_section->vma+
1078 symbol->value + reloc->addend - dst_address -
1079 ( input_section->output_section->vma + input_section->output_offset))
1082 bfd_put_32(in_abfd,word, data+dst_address);
1091 long int word = bfd_get_32(in_abfd, data+src_address);
1092 asymbol *symbol = *(reloc->sym_ptr_ptr);
1093 word = (word & ~PCREL13_MASK) |
1094 (((word & PCREL13_MASK) +
1095 symbol->section->output_offset +
1096 symbol->section->output_section->vma+
1097 symbol->value + reloc->addend - dst_address -
1098 ( input_section->output_section->vma + input_section->output_offset))
1101 bfd_put_32(in_abfd,word, data+dst_address);
1117 /***********************************************************************/
1119 /* Build the transfer vectors for Big and Little-Endian B.OUT files. */
1121 /* We don't have core files. */
1122 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
1123 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
1124 #define aout_32_core_file_matches_executable_p \
1125 _bfd_dummy_core_file_matches_executable_p
1127 /* We use BSD-Unix generic archive files. */
1128 #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
1129 #define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt
1130 #define aout_32_slurp_armap bfd_slurp_bsd_armap
1131 #define aout_32_slurp_extended_name_table bfd_true
1132 #define aout_32_write_armap bsd_write_armap
1133 #define aout_32_truncate_arname bfd_bsd_truncate_arname
1135 /* We override these routines from the usual a.out file routines. */
1136 #define aout_32_canonicalize_reloc b_out_canonicalize_reloc
1137 #define aout_32_get_reloc_upper_bound b_out_get_reloc_upper_bound
1138 #define aout_32_set_section_contents b_out_set_section_contents
1139 #define aout_32_set_arch_mach b_out_set_arch_mach
1140 #define aout_32_sizeof_headers b_out_sizeof_headers
1142 #define aout_32_bfd_debug_info_start bfd_void
1143 #define aout_32_bfd_debug_info_end bfd_void
1144 #define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
1146 #define aout_32_bfd_get_relocated_section_contents b_out_get_relocated_section_contents
1147 #define aout_32_bfd_relax_section b_out_relax_section
1149 bfd_target b_out_vec_big_host =
1151 "b.out.big", /* name */
1152 bfd_target_aout_flavour,
1153 false, /* data byte order is little */
1154 true, /* hdr byte order is big */
1155 (HAS_RELOC | EXEC_P | /* object flags */
1156 HAS_LINENO | HAS_DEBUG |
1157 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
1158 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1159 ' ', /* ar_pad_char */
1160 16, /* ar_max_namelen */
1161 2, /* minumum alignment power */
1163 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
1164 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
1165 {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
1166 bfd_generic_archive_p, _bfd_dummy_target},
1167 {bfd_false, b_out_mkobject, /* bfd_set_format */
1168 _bfd_generic_mkarchive, bfd_false},
1169 {bfd_false, b_out_write_object_contents, /* bfd_write_contents */
1170 _bfd_write_archive_contents, bfd_false},
1172 JUMP_TABLE(aout_32),
1173 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
1174 b_out_reloc_type_lookup,
1178 bfd_target b_out_vec_little_host =
1180 "b.out.little", /* name */
1181 bfd_target_aout_flavour,
1182 false, /* data byte order is little */
1183 false, /* header byte order is little */
1184 (HAS_RELOC | EXEC_P | /* object flags */
1185 HAS_LINENO | HAS_DEBUG |
1186 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
1187 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1188 ' ', /* ar_pad_char */
1189 16, /* ar_max_namelen */
1190 2, /* minum align */
1191 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
1192 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
1194 {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
1195 bfd_generic_archive_p, _bfd_dummy_target},
1196 {bfd_false, b_out_mkobject, /* bfd_set_format */
1197 _bfd_generic_mkarchive, bfd_false},
1198 {bfd_false, b_out_write_object_contents, /* bfd_write_contents */
1199 _bfd_write_archive_contents, bfd_false},
1200 JUMP_TABLE(aout_32),
1201 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
1202 b_out_reloc_type_lookup,