1 /* BFD back-end for Intel 960 b.out binaries.
2 Copyright 1990, 1991, 1992, 1993 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
, seclet
),
273 arelent
*reloc_entry AND
276 asection
*input_section AND
277 bfd_seclet_type
*seclet
)
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 (symbol_in
->section
== &bfd_und_section
)
285 bfd_error_vector
.undefined_symbol(reloc_entry
, seclet
);
288 if (IS_CALLNAME(symbol
->other
))
291 aout_symbol_type
*balsym
= symbol
+1;
292 int inst
= bfd_get_32(abfd
, (bfd_byte
*) src
-4);
293 /* The next symbol should be an N_BALNAME */
294 BFD_ASSERT(IS_BALNAME(balsym
->other
));
297 bfd_put_32(abfd
, inst
, (bfd_byte
*) dst
-4);
301 word
+= symbol
->symbol
.section
->output_offset
+
302 symbol
->symbol
.section
->output_section
->vma
+
303 symbol
->symbol
.value
+ reloc_entry
->addend
;
305 bfd_put_32(abfd
, word
, dst
);
310 /* Magic to turn call into callj */
311 static bfd_reloc_status_type
312 DEFUN (callj_callback
, (abfd
, reloc_entry
, data
, srcidx
,dstidx
,
313 input_section
, seclet
),
315 arelent
*reloc_entry AND
317 unsigned int srcidx AND
318 unsigned int dstidx AND
319 asection
*input_section AND
320 bfd_seclet_type
*seclet
)
322 int word
= bfd_get_32(abfd
, (bfd_byte
*) data
+ srcidx
);
323 asymbol
*symbol_in
= *(reloc_entry
->sym_ptr_ptr
);
325 aout_symbol_type
*symbol
= aout_symbol(symbol_in
);
327 if (symbol_in
->section
== &bfd_und_section
)
329 bfd_error_vector
.undefined_symbol(reloc_entry
, seclet
);
332 if (IS_OTHER(symbol
->other
))
334 /* Call to a system procedure - replace code with system
336 word
= CALLS
| (symbol
->other
- 1);
340 else if (IS_CALLNAME(symbol
->other
))
342 aout_symbol_type
*balsym
= symbol
+1;
343 /* The next symbol should be an N_BALNAME */
344 BFD_ASSERT(IS_BALNAME(balsym
->other
));
346 /* We are calling a leaf - so replace the call instruction
350 (((word
& BAL_MASK
) +
351 balsym
->symbol
.section
->output_offset
+
352 balsym
->symbol
.section
->output_section
->vma
+
353 balsym
->symbol
.value
+ reloc_entry
->addend
- dstidx
-
354 ( input_section
->output_section
->vma
+ input_section
->output_offset
))
363 (((word
& BAL_MASK
) +
364 symbol
->symbol
.section
->output_offset
+
365 symbol
->symbol
.section
->output_section
->vma
+
366 symbol
->symbol
.value
+ reloc_entry
->addend
- dstidx
-
367 ( input_section
->output_section
->vma
+ input_section
->output_offset
))
370 bfd_put_32(abfd
, word
, (bfd_byte
*) data
+ dstidx
);
374 /* type rshift size bitsize pcrel bitpos absolute overflow check*/
377 #define ABS32CODE_SHRUNK 1
382 #define ABS32_MAYBE_RELAXABLE 1
383 #define ABS32_WAS_RELAXABLE 2
387 static reloc_howto_type howto_reloc_callj
=
388 HOWTO(CALLJ
, 0, 2, 24, true, 0, true, true, 0,"callj", true, 0x00ffffff, 0x00ffffff,false);
389 static reloc_howto_type howto_reloc_abs32
=
390 HOWTO(ABS32
, 0, 2, 32, false, 0, true, true,0,"abs32", true, 0xffffffff,0xffffffff,false);
391 static reloc_howto_type howto_reloc_pcrel24
=
392 HOWTO(PCREL24
, 0, 2, 24, true, 0, true, true,0,"pcrel24", true, 0x00ffffff,0x00ffffff,false);
394 static reloc_howto_type howto_reloc_pcrel13
=
395 HOWTO(PCREL13
, 0, 2, 13, true, 0, true, true,0,"pcrel13", true, 0x00001fff,0x00001fff,false);
398 static reloc_howto_type howto_reloc_abs32codeshrunk
=
399 HOWTO(ABS32CODE_SHRUNK
, 0, 2, 24, true, 0, true, true, 0,"callx->callj", true, 0x00ffffff, 0x00ffffff,false);
401 static reloc_howto_type howto_reloc_abs32code
=
402 HOWTO(ABS32CODE
, 0, 2, 32, false, 0, true, true,0,"callx", true, 0xffffffff,0xffffffff,false);
404 static reloc_howto_type howto_align_table
[] = {
405 HOWTO (ALIGNER
, 0, 0x1, 0, false, 0, false, false, 0, "align16", false, 0, 0, false),
406 HOWTO (ALIGNER
, 0, 0x3, 0, false, 0, false, false, 0, "align32", false, 0, 0, false),
407 HOWTO (ALIGNER
, 0, 0x7, 0, false, 0, false, false, 0, "align64", false, 0, 0, false),
408 HOWTO (ALIGNER
, 0, 0xf, 0, false, 0, false, false, 0, "align128", false, 0, 0, false),
411 static reloc_howto_type howto_done_align_table
[] = {
412 HOWTO (ALIGNDONE
, 0x1, 0x1, 0, false, 0, false, false, 0, "donealign16", false, 0, 0, false),
413 HOWTO (ALIGNDONE
, 0x3, 0x3, 0, false, 0, false, false, 0, "donealign32", false, 0, 0, false),
414 HOWTO (ALIGNDONE
, 0x7, 0x7, 0, false, 0, false, false, 0, "donealign64", false, 0, 0, false),
415 HOWTO (ALIGNDONE
, 0xf, 0xf, 0, false, 0, false, false, 0, "donealign128", false, 0, 0, false),
418 static reloc_howto_type
*
419 b_out_reloc_type_lookup (abfd
, code
)
421 bfd_reloc_code_real_type code
;
427 case BFD_RELOC_I960_CALLJ
:
428 return &howto_reloc_callj
;
430 return &howto_reloc_abs32
;
431 case BFD_RELOC_24_PCREL
:
432 return &howto_reloc_pcrel24
;
436 /* Allocate enough room for all the reloc entries, plus pointers to them all */
439 b_out_slurp_reloc_table (abfd
, asect
, symbols
)
444 register struct relocation_info
*rptr
;
445 unsigned int counter
;
447 int extern_mask
, pcrel_mask
, callj_mask
, length_shift
;
450 bfd_vma prev_addr
= 0;
453 struct relocation_info
*relocs
;
454 arelent
*reloc_cache
;
456 if (asect
->relocation
) return true;
457 if (!aout_32_slurp_symbol_table (abfd
)) return false;
459 if (asect
== obj_datasec (abfd
)) {
460 reloc_size
= exec_hdr(abfd
)->a_drsize
;
464 if (asect
== obj_textsec (abfd
)) {
465 reloc_size
= exec_hdr(abfd
)->a_trsize
;
469 bfd_error
= invalid_operation
;
473 bfd_seek (abfd
, (file_ptr
)(asect
->rel_filepos
), SEEK_SET
);
474 count
= reloc_size
/ sizeof (struct relocation_info
);
476 relocs
= (struct relocation_info
*) bfd_xmalloc (reloc_size
);
478 bfd_error
= no_memory
;
481 reloc_cache
= (arelent
*) bfd_xmalloc ((count
+1) * sizeof (arelent
));
483 free ((char*)relocs
);
484 bfd_error
= no_memory
;
488 if (bfd_read ((PTR
) relocs
, 1, reloc_size
, abfd
) != reloc_size
) {
489 bfd_error
= system_call_error
;
497 if (abfd
->xvec
->header_byteorder_big_p
) {
498 /* big-endian bit field allocation order */
506 /* little-endian bit field allocation order */
515 for (rptr
= relocs
, cache_ptr
= reloc_cache
, counter
= 0;
517 counter
++, rptr
++, cache_ptr
++)
519 unsigned char *raw
= (unsigned char *)rptr
;
521 cache_ptr
->address
= bfd_h_get_32 (abfd
, raw
+ 0);
522 cache_ptr
->howto
= 0;
523 if (abfd
->xvec
->header_byteorder_big_p
)
525 symnum
= (raw
[4] << 16) | (raw
[5] << 8) | raw
[6];
529 symnum
= (raw
[6] << 16) | (raw
[5] << 8) | raw
[4];
532 if (raw
[7] & extern_mask
)
534 /* if this is set then the r_index is a index into the symbol table;
535 * if the bit is not set then r_index contains a section map.
536 * we either fill in the sym entry with a pointer to the symbol,
537 * or point to the correct section
539 cache_ptr
->sym_ptr_ptr
= symbols
+ symnum
;
540 cache_ptr
->addend
= 0;
543 /* in a.out symbols are relative to the beginning of the
544 * file rather than sections ?
545 * (look in translate_from_native_sym_flags)
546 * the reloc entry addend has added to it the offset into the
547 * file of the data, so subtract the base to make the reloc
548 * section relative */
551 /* sign-extend symnum from 24 bits to whatever host uses */
556 cache_ptr
->sym_ptr_ptr
= (asymbol
**)NULL
;
561 cache_ptr
->sym_ptr_ptr
= obj_textsec(abfd
)->symbol_ptr_ptr
;
562 cache_ptr
->addend
= - obj_textsec(abfd
)->vma
;
566 cache_ptr
->sym_ptr_ptr
= obj_datasec(abfd
)->symbol_ptr_ptr
;
567 cache_ptr
->addend
= - obj_datasec(abfd
)->vma
;
571 cache_ptr
->sym_ptr_ptr
= obj_bsssec(abfd
)->symbol_ptr_ptr
;
572 cache_ptr
->addend
= - obj_bsssec(abfd
)->vma
;
576 cache_ptr
->sym_ptr_ptr
= obj_bsssec(abfd
)->symbol_ptr_ptr
;
577 cache_ptr
->addend
= 0;
579 case -2: /* .align */
580 if (raw
[7] & pcrel_mask
)
582 cache_ptr
->howto
= &howto_align_table
[(raw
[7] >> length_shift
) & 3];
583 cache_ptr
->sym_ptr_ptr
= &bfd_abs_symbol
;
590 cache_ptr
->addend
= 0;
599 /* the i960 only has a few relocation types:
600 abs 32-bit and pcrel 24bit. except for callj's! */
601 if (cache_ptr
->howto
!= 0)
603 else if (raw
[7] & callj_mask
)
605 cache_ptr
->howto
= &howto_reloc_callj
;
607 else if ( raw
[7] & pcrel_mask
)
609 if (raw
[7] & size_mask
)
610 cache_ptr
->howto
= &howto_reloc_pcrel13
;
612 cache_ptr
->howto
= &howto_reloc_pcrel24
;
616 if (raw
[7] & incode_mask
)
618 cache_ptr
->howto
= &howto_reloc_abs32code
;
622 cache_ptr
->howto
= &howto_reloc_abs32
;
625 if (cache_ptr
->address
< prev_addr
)
627 /* Ouch! this reloc is out of order, insert into the right place
630 arelent
*cursor
= cache_ptr
-1;
631 bfd_vma stop
= cache_ptr
->address
;
633 while (cursor
->address
> stop
&& cursor
>= reloc_cache
)
635 cursor
[1] = cursor
[0];
642 prev_addr
= cache_ptr
->address
;
648 asect
->relocation
= reloc_cache
;
649 asect
->reloc_count
= count
;
657 b_out_squirt_out_relocs (abfd
, section
)
667 unsigned int count
= section
->reloc_count
;
668 struct relocation_info
*native
, *natptr
;
669 size_t natsize
= count
* sizeof (struct relocation_info
);
670 int extern_mask
, pcrel_mask
, len_2
, callj_mask
;
671 if (count
== 0) return true;
672 generic
= section
->orelocation
;
673 native
= ((struct relocation_info
*) bfd_xmalloc (natsize
));
675 bfd_error
= no_memory
;
679 if (abfd
->xvec
->header_byteorder_big_p
)
681 /* Big-endian bit field allocation order */
691 /* Little-endian bit field allocation order */
700 for (natptr
= native
; count
> 0; --count
, ++natptr
, ++generic
)
702 arelent
*g
= *generic
;
703 unsigned char *raw
= (unsigned char *)natptr
;
704 asymbol
*sym
= *(g
->sym_ptr_ptr
);
706 asection
*output_section
= sym
->section
->output_section
;
708 bfd_h_put_32(abfd
, g
->address
, raw
);
709 /* Find a type in the output format which matches the input howto -
710 * at the moment we assume input format == output format FIXME!!
713 /* FIXME: Need callj stuff here, and to check the howto entries to
714 be sure they are real for this architecture. */
715 if (g
->howto
== &howto_reloc_callj
)
717 raw
[7] = callj_mask
+ pcrel_mask
+ len_2
;
719 else if (g
->howto
== &howto_reloc_pcrel24
)
721 raw
[7] = pcrel_mask
+ len_2
;
723 else if (g
->howto
== &howto_reloc_pcrel13
)
725 raw
[7] = pcrel_mask
+ len_1
;
727 else if (g
->howto
== &howto_reloc_abs32code
)
729 raw
[7] = len_2
+ incode_mask
;
731 else if (g
->howto
>= howto_align_table
732 && g
->howto
<= (howto_align_table
733 + sizeof (howto_align_table
) / sizeof (howto_align_table
[0])
736 /* symnum == -2; extern_mask not set, pcrel_mask set */
740 | ((g
->howto
- howto_align_table
) << 1));
747 /* already mucked with r_extern, r_idx */;
748 else if (bfd_is_com_section (output_section
)
749 || output_section
== &bfd_abs_section
750 || output_section
== &bfd_und_section
)
753 if (bfd_abs_section
.symbol
== sym
)
755 /* Whoops, looked like an abs symbol, but is really an offset
756 from the abs section */
765 r_idx
= stoi((*(g
->sym_ptr_ptr
))->flags
);
770 /* Just an ordinary section */
772 r_idx
= output_section
->target_index
;
775 if (abfd
->xvec
->header_byteorder_big_p
) {
776 raw
[4] = (unsigned char) (r_idx
>> 16);
777 raw
[5] = (unsigned char) (r_idx
>> 8);
778 raw
[6] = (unsigned char) (r_idx
);
780 raw
[6] = (unsigned char) (r_idx
>> 16);
781 raw
[5] = (unsigned char) (r_idx
>> 8);
782 raw
[4] = (unsigned char) (r_idx
);
785 raw
[7] |= extern_mask
;
788 if (bfd_write ((PTR
) native
, 1, natsize
, abfd
) != natsize
) {
797 /* This is stupid. This function should be a boolean predicate */
799 b_out_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
805 arelent
*tblptr
= section
->relocation
;
806 unsigned int count
= 0;
808 if (!(tblptr
|| b_out_slurp_reloc_table (abfd
, section
, symbols
))) return 0;
809 tblptr
= section
->relocation
;
810 if (!tblptr
) return 0;
812 for (; count
++ < section
->reloc_count
;)
813 *relptr
++ = tblptr
++;
817 return section
->reloc_count
;
821 b_out_get_reloc_upper_bound (abfd
, asect
)
825 if (bfd_get_format (abfd
) != bfd_object
) {
826 bfd_error
= invalid_operation
;
830 if (asect
== obj_datasec (abfd
))
831 return (sizeof (arelent
*) *
832 ((exec_hdr(abfd
)->a_drsize
/ sizeof (struct relocation_info
))
835 if (asect
== obj_textsec (abfd
))
836 return (sizeof (arelent
*) *
837 ((exec_hdr(abfd
)->a_trsize
/ sizeof (struct relocation_info
))
840 bfd_error
= invalid_operation
;
845 b_out_set_section_contents (abfd
, section
, location
, offset
, count
)
848 unsigned char *location
;
853 if (abfd
->output_has_begun
== false) { /* set by bfd.c handler */
854 if ((obj_textsec (abfd
) == NULL
) || (obj_datasec (abfd
) == NULL
) /*||
855 (obj_textsec (abfd)->_cooked_size == 0) || (obj_datasec (abfd)->_cooked_size == 0)*/) {
856 bfd_error
= invalid_operation
;
860 obj_textsec (abfd
)->filepos
= sizeof(struct internal_exec
);
861 obj_datasec(abfd
)->filepos
= obj_textsec(abfd
)->filepos
862 + obj_textsec (abfd
)->_raw_size
;
865 /* regardless, once we know what we're doing, we might as well get going */
866 bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
);
869 return (bfd_write ((PTR
)location
, 1, count
, abfd
) == count
) ?true:false;
875 b_out_set_arch_mach (abfd
, arch
, machine
)
877 enum bfd_architecture arch
;
878 unsigned long machine
;
880 bfd_default_set_arch_mach(abfd
, arch
, machine
);
882 if (arch
== bfd_arch_unknown
) /* Unknown machine arch is OK */
884 if (arch
== bfd_arch_i960
) /* i960 default is OK */
886 case bfd_mach_i960_core
:
887 case bfd_mach_i960_kb_sb
:
888 case bfd_mach_i960_mc
:
889 case bfd_mach_i960_xa
:
890 case bfd_mach_i960_ca
:
891 case bfd_mach_i960_ka_sa
:
902 DEFUN(b_out_sizeof_headers
,(ignore_abfd
, ignore
),
906 return sizeof(struct internal_exec
);
911 /************************************************************************/
913 DEFUN(get_value
,(reloc
, seclet
),
915 bfd_seclet_type
*seclet
)
918 asymbol
*symbol
= *(reloc
->sym_ptr_ptr
);
920 /* A symbol holds a pointer to a section, and an offset from the
921 base of the section. To relocate, we find where the section will
922 live in the output and add that in */
924 if (symbol
->section
== &bfd_und_section
)
926 /* Ouch, this is an undefined symbol.. */
927 bfd_error_vector
.undefined_symbol(reloc
, seclet
);
928 value
= symbol
->value
;
932 value
= symbol
->value
+
933 symbol
->section
->output_offset
+
934 symbol
->section
->output_section
->vma
;
937 /* Add the value contained in the relocation */
938 value
+= reloc
->addend
;
944 DEFUN(perform_slip
,(s
, slip
, input_section
, value
),
946 unsigned int slip AND
947 asection
*input_section AND
951 /* Find all symbols past this point, and make them know
956 if (p
->section
== input_section
)
958 /* This was pointing into this section, so mangle it */
959 if (p
->value
> value
)
969 /* This routine works out if the thing we want to get to can be
970 reached with a 24bit offset instead of a 32 bit one.
971 If it can, then it changes the amode */
974 DEFUN(abs32code
,(input_section
, symbols
, r
, shrink
),
975 asection
*input_section AND
976 asymbol
**symbols AND
980 bfd_vma value
= get_value(r
,0);
981 bfd_vma dot
= input_section
->output_section
->vma
+ input_section
->output_offset
+ r
->address
;
984 /* See if the address we're looking at within 2^23 bytes of where
985 we are, if so then we can use a small branch rather than the
986 jump we were going to */
988 gap
= value
- (dot
- shrink
);
991 if (-1<<23 < (long)gap
&& (long)gap
< 1<<23 )
993 /* Change the reloc type from 32bitcode possible 24, to 24bit
996 r
->howto
= &howto_reloc_abs32codeshrunk
;
997 /* The place to relc moves back by four bytes */
1000 /* This will be four bytes smaller in the long run */
1002 perform_slip(symbols
, 4, input_section
, r
->address
-shrink
+4);
1008 DEFUN(aligncode
,(input_section
, symbols
, r
, shrink
),
1009 asection
*input_section AND
1010 asymbol
**symbols AND
1012 unsigned int shrink
)
1014 bfd_vma dot
= input_section
->output_section
->vma
+ input_section
->output_offset
+ r
->address
;
1019 int size
= r
->howto
->size
;
1021 /* Reduce the size of the alignment so that it's still aligned but
1022 smaller - the current size is already the same size as or bigger
1023 than the alignment required. */
1025 /* calculate the first byte following the padding before we optimize */
1026 old_end
= ((dot
+ size
) & ~size
) + size
+1;
1027 /* work out where the new end will be - remember that we're smaller
1028 than we used to be */
1029 new_end
= ((dot
- shrink
+ size
) & ~size
);
1031 /* This is the new end */
1032 gap
= old_end
- ((dot
+ size
) & ~size
);
1034 shrink_delta
= (old_end
- new_end
) - shrink
;
1038 /* Change the reloc so that it knows how far to align to */
1039 r
->howto
= howto_done_align_table
+ (r
->howto
- howto_align_table
);
1041 /* Encode the stuff into the addend - for future use we need to
1042 know how big the reloc used to be */
1043 r
->addend
= old_end
;
1045 /* This will be N bytes smaller in the long run, adjust all the symbols */
1046 perform_slip(symbols
, shrink_delta
, input_section
, r
->address
- shrink
);
1047 shrink
+= shrink_delta
;
1054 DEFUN(b_out_relax_section
,(abfd
, i
, symbols
),
1060 /* Get enough memory to hold the stuff */
1061 bfd
*input_bfd
= i
->owner
;
1062 asection
*input_section
= i
;
1064 boolean
new = false;
1066 bfd_size_type reloc_size
= bfd_get_reloc_upper_bound(input_bfd
,
1068 arelent
**reloc_vector
= (arelent
**)alloca(reloc_size
);
1070 /* Get the relocs and think about them */
1071 if (bfd_canonicalize_reloc(input_bfd
,
1077 for (parent
= reloc_vector
; *parent
; parent
++)
1079 arelent
*r
= *parent
;
1080 switch (r
->howto
->type
) {
1082 /* An alignment reloc */
1083 shrink
= aligncode(input_section
, symbols
, r
,shrink
);
1087 /* A 32bit reloc in an addressing mode */
1088 shrink
= abs32code(input_section
, symbols
, r
,shrink
);
1091 case ABS32CODE_SHRUNK
:
1097 input_section
->_cooked_size
= input_section
->_raw_size
- shrink
;
1104 DEFUN(b_out_get_relocated_section_contents
,(in_abfd
,
1109 bfd_seclet_type
*seclet AND
1111 boolean relocateable
)
1113 /* Get enough memory to hold the stuff */
1114 bfd
*input_bfd
= seclet
->u
.indirect
.section
->owner
;
1115 asection
*input_section
= seclet
->u
.indirect
.section
;
1116 bfd_size_type reloc_size
= bfd_get_reloc_upper_bound(input_bfd
,
1118 arelent
**reloc_vector
= (arelent
**)alloca(reloc_size
);
1120 /* If producing relocateable output, don't bother to relax. */
1122 return bfd_generic_get_relocated_section_contents (in_abfd
, seclet
,
1123 data
, relocateable
);
1125 /* read in the section */
1126 bfd_get_section_contents(input_bfd
,
1130 input_section
->_raw_size
);
1133 if (bfd_canonicalize_reloc(input_bfd
,
1136 seclet
->u
.indirect
.symbols
) )
1138 arelent
**parent
= reloc_vector
;
1143 unsigned int dst_address
= 0;
1144 unsigned int src_address
= 0;
1148 /* Find how long a run we can do */
1149 while (dst_address
< seclet
->size
)
1155 /* Note that the relaxing didn't tie up the addresses in the
1156 relocation, so we use the original address to work out the
1157 run of non-relocated data */
1158 run
= reloc
->address
- src_address
;
1164 run
= seclet
->size
- dst_address
;
1166 /* Copy the bytes */
1167 for (idx
= 0; idx
< run
; idx
++)
1169 data
[dst_address
++] = data
[src_address
++];
1172 /* Now do the relocation */
1176 switch (reloc
->howto
->type
)
1179 calljx_callback(in_abfd
, reloc
, src_address
+ data
, dst_address
+data
,
1180 input_section
, seclet
);
1186 (bfd_get_32 (in_abfd
, data
+src_address
)
1187 + get_value(reloc
, seclet
)),
1193 callj_callback(in_abfd
, reloc
,data
,src_address
,dst_address
,
1194 input_section
, seclet
);
1199 src_address
= reloc
->addend
;
1200 dst_address
= (dst_address
+ reloc
->howto
->size
) & ~reloc
->howto
->size
;
1202 case ABS32CODE_SHRUNK
:
1203 /* This used to be a callx, but we've found out that a
1204 callj will reach, so do the right thing */
1205 callj_callback(in_abfd
, reloc
,data
,src_address
+4, dst_address
,
1206 input_section
, seclet
);
1213 long int word
= bfd_get_32(in_abfd
, data
+src_address
);
1214 asymbol
*symbol
= *(reloc
->sym_ptr_ptr
);
1215 if (symbol
->section
== &bfd_und_section
)
1217 bfd_error_vector
.undefined_symbol(reloc
, seclet
);
1219 word
= ((word
& ~BAL_MASK
)
1220 | (((word
& BAL_MASK
)
1221 /* value of symbol */
1223 /* how far it's moving in this relocation */
1224 + (symbol
->section
->output_offset
1225 + symbol
->section
->output_section
->vma
)
1226 - (input_section
->output_section
->vma
1227 + input_section
->output_offset
)
1228 /* addend, of course */
1232 bfd_put_32(in_abfd
,word
, data
+dst_address
);
1241 long int word
= bfd_get_32(in_abfd
, data
+src_address
);
1242 asymbol
*symbol
= *(reloc
->sym_ptr_ptr
);
1243 if (symbol
->section
== &bfd_und_section
)
1245 bfd_error_vector
.undefined_symbol(reloc
, seclet
);
1247 word
= ((word
& ~PCREL13_MASK
)
1248 | (((word
& PCREL13_MASK
)
1249 + (symbol
->section
->output_offset
1250 + symbol
->section
->output_section
->vma
)
1253 - (input_section
->output_section
->vma
1254 + input_section
->output_offset
))
1257 bfd_put_32(in_abfd
,word
, data
+dst_address
);
1273 /***********************************************************************/
1275 /* Build the transfer vectors for Big and Little-Endian B.OUT files. */
1277 /* We don't have core files. */
1278 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
1279 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
1280 #define aout_32_core_file_matches_executable_p \
1281 _bfd_dummy_core_file_matches_executable_p
1283 /* We use BSD-Unix generic archive files. */
1284 #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
1285 #define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt
1286 #define aout_32_slurp_armap bfd_slurp_bsd_armap
1287 #define aout_32_slurp_extended_name_table bfd_true
1288 #define aout_32_write_armap bsd_write_armap
1289 #define aout_32_truncate_arname bfd_bsd_truncate_arname
1291 /* We override these routines from the usual a.out file routines. */
1292 #define aout_32_canonicalize_reloc b_out_canonicalize_reloc
1293 #define aout_32_get_reloc_upper_bound b_out_get_reloc_upper_bound
1294 #define aout_32_set_section_contents b_out_set_section_contents
1295 #define aout_32_set_arch_mach b_out_set_arch_mach
1296 #define aout_32_sizeof_headers b_out_sizeof_headers
1298 #define aout_32_bfd_debug_info_start bfd_void
1299 #define aout_32_bfd_debug_info_end bfd_void
1300 #define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
1302 #define aout_32_bfd_get_relocated_section_contents b_out_get_relocated_section_contents
1303 #define aout_32_bfd_relax_section b_out_relax_section
1304 #define aout_32_bfd_seclet_link bfd_generic_seclet_link
1305 #define aout_32_bfd_reloc_type_lookup b_out_reloc_type_lookup
1306 #define aout_32_bfd_make_debug_symbol \
1307 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
1309 bfd_target b_out_vec_big_host
=
1311 "b.out.big", /* name */
1312 bfd_target_aout_flavour
,
1313 false, /* data byte order is little */
1314 true, /* hdr byte order is big */
1315 (HAS_RELOC
| EXEC_P
| /* object flags */
1316 HAS_LINENO
| HAS_DEBUG
|
1317 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
),
1318 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
1319 '_', /* symbol leading char */
1320 ' ', /* ar_pad_char */
1321 16, /* ar_max_namelen */
1322 2, /* minumum alignment power */
1324 _do_getl64
, _do_putl64
, _do_getl32
, _do_putl32
, _do_getl16
, _do_putl16
, /* data */
1325 _do_getb64
, _do_putb64
, _do_getb32
, _do_putb32
, _do_getb16
, _do_putb16
, /* hdrs */
1326 {_bfd_dummy_target
, b_out_object_p
, /* bfd_check_format */
1327 bfd_generic_archive_p
, _bfd_dummy_target
},
1328 {bfd_false
, b_out_mkobject
, /* bfd_set_format */
1329 _bfd_generic_mkarchive
, bfd_false
},
1330 {bfd_false
, b_out_write_object_contents
, /* bfd_write_contents */
1331 _bfd_write_archive_contents
, bfd_false
},
1333 JUMP_TABLE(aout_32
),
1338 bfd_target b_out_vec_little_host
=
1340 "b.out.little", /* name */
1341 bfd_target_aout_flavour
,
1342 false, /* data byte order is little */
1343 false, /* header byte order is little */
1344 (HAS_RELOC
| EXEC_P
| /* object flags */
1345 HAS_LINENO
| HAS_DEBUG
|
1346 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
),
1347 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
1348 '_', /* symbol leading char */
1349 ' ', /* ar_pad_char */
1350 16, /* ar_max_namelen */
1351 2, /* minum align */
1352 _do_getl64
, _do_putl64
, _do_getl32
, _do_putl32
, _do_getl16
, _do_putl16
, /* data */
1353 _do_getl64
, _do_putl64
, _do_getl32
, _do_putl32
, _do_getl16
, _do_putl16
, /* hdrs */
1355 {_bfd_dummy_target
, b_out_object_p
, /* bfd_check_format */
1356 bfd_generic_archive_p
, _bfd_dummy_target
},
1357 {bfd_false
, b_out_mkobject
, /* bfd_set_format */
1358 _bfd_generic_mkarchive
, bfd_false
},
1359 {bfd_false
, b_out_write_object_contents
, /* bfd_write_contents */
1360 _bfd_write_archive_contents
, bfd_false
},
1361 JUMP_TABLE(aout_32
),