1 /* BFD back-end for PDP-11 a.out binaries.
2 Copyright (C) 2001-2015 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
22 /* BFD backend for PDP-11, running 2.11BSD in particular.
24 This file was hacked up by looking hard at the existing vaxnetbsd
25 back end and the header files in 2.11BSD.
28 * support for V7 file formats
29 * support for overlay object files (see 2.11 a.out(5))
30 * support for old and very old archives
31 (see 2.11 ar(5), historical section)
33 Search for TODO to find other areas needing more work. */
35 #define BYTES_IN_WORD 2
36 #define BYTES_IN_LONG 4
38 #undef TARGET_IS_BIG_ENDIAN_P
40 #define TARGET_PAGE_SIZE 1024
41 #define SEGMENT__SIZE TARGET_PAGE_SIZE
43 #define DEFAULT_ARCH bfd_arch_pdp11
44 #define DEFAULT_MID M_PDP11
46 /* Do not "beautify" the CONCAT* macro args. Traditional C will not
47 remove whitespace added here, and thus will fail to concatenate
49 #define MY(OP) CONCAT2 (pdp11_aout_,OP)
51 /* This needs to start with a.out so GDB knows it is an a.out variant. */
52 #define TARGETNAME "a.out-pdp11"
54 /* This is the normal load address for executables. */
55 #define TEXT_START_ADDR 0
57 /* The header is not included in the text segment. */
58 #define N_HEADER_IN_TEXT(x) 0
60 /* There is no flags field. */
61 #define N_FLAGS(exec) 0
63 #define N_SET_FLAGS(exec, flags) do { } while (0)
64 #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
65 && N_MAGIC(x) != NMAGIC \
66 && N_MAGIC(x) != ZMAGIC)
71 #define external_exec pdp11_external_exec
72 struct pdp11_external_exec
74 bfd_byte e_info
[2]; /* Magic number. */
75 bfd_byte e_text
[2]; /* Length of text section in bytes. */
76 bfd_byte e_data
[2]; /* Length of data section in bytes. */
77 bfd_byte e_bss
[2]; /* Length of bss area in bytes. */
78 bfd_byte e_syms
[2]; /* Length of symbol table in bytes. */
79 bfd_byte e_entry
[2]; /* Start address. */
80 bfd_byte e_unused
[2]; /* Not used. */
81 bfd_byte e_flag
[2]; /* Relocation info stripped. */
82 bfd_byte e_relocatable
; /* Ugly hack. */
85 #define EXEC_BYTES_SIZE (8 * 2)
87 #define A_MAGIC1 OMAGIC
88 #define OMAGIC 0407 /* ...object file or impure executable. */
89 #define A_MAGIC2 NMAGIC
90 #define NMAGIC 0410 /* Pure executable. */
91 #define ZMAGIC 0413 /* Demand-paged executable. */
92 #define A_MAGIC3 0411 /* Separated I&D. */
93 #define A_MAGIC4 0405 /* Overlay. */
94 #define A_MAGIC5 0430 /* Auto-overlay (nonseparate). */
95 #define A_MAGIC6 0431 /* Auto-overlay (separate). */
99 #define A_FLAG_RELOC_STRIPPED 0x0001
101 #define external_nlist pdp11_external_nlist
102 struct pdp11_external_nlist
104 bfd_byte e_unused
[2]; /* Unused. */
105 bfd_byte e_strx
[2]; /* Index into string table of name. */
106 bfd_byte e_type
[1]; /* Type of symbol. */
107 bfd_byte e_ovly
[1]; /* Overlay number. */
108 bfd_byte e_value
[2]; /* Value of symbol. */
111 #define EXTERNAL_NLIST_SIZE 8
113 #define N_TXTOFF(x) (EXEC_BYTES_SIZE)
114 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
115 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
116 #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
117 #define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize)
118 #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
120 #define WRITE_HEADERS(abfd, execp) pdp11_aout_write_headers (abfd, execp)
125 #define SWAP_MAGIC(ext) bfd_getl16 (ext)
127 #define MY_entry_is_text_address 1
129 #define MY_write_object_contents MY(write_object_contents)
130 static bfd_boolean
MY(write_object_contents
) (bfd
*);
131 #define MY_text_includes_header 1
133 #define MY_BFD_TARGET
135 #include "aout-target.h"
137 /* Start of modified aoutx.h. */
138 #define KEEPIT udata.i
140 #include <string.h> /* For strchr and friends. */
143 #include "safe-ctype.h"
147 #include "aout/aout64.h"
148 #include "aout/stab_gnu.h"
160 #define N_TYPE 0x1f /* Type mask. */
161 #define N_UNDF 0x00 /* Undefined. */
162 #define N_ABS 0x01 /* Absolute. */
163 #define N_TEXT 0x02 /* Text segment. */
164 #define N_DATA 0x03 /* Data segment. */
165 #define N_BSS 0x04 /* Bss segment. */
166 #define N_REG 0x14 /* Register symbol. */
167 #define N_FN 0x1f /* File name. */
168 #define N_EXT 0x20 /* External flag. */
172 #define RELFLG 0x0001 /* PC-relative flag. */
173 #define RTYPE 0x000e /* Type mask. */
174 #define RIDXMASK 0xfff0 /* Index mask. */
176 #define RABS 0x00 /* Absolute. */
177 #define RTEXT 0x02 /* Text. */
178 #define RDATA 0x04 /* Data. */
179 #define RBSS 0x06 /* Bss. */
180 #define REXT 0x08 /* External. */
182 #define RINDEX(x) (((x) & 0xfff0) >> 4)
184 #ifndef MY_final_link_relocate
185 #define MY_final_link_relocate _bfd_final_link_relocate
188 #ifndef MY_relocate_contents
189 #define MY_relocate_contents _bfd_relocate_contents
192 /* A hash table used for header files with N_BINCL entries. */
194 struct aout_link_includes_table
196 struct bfd_hash_table root
;
199 /* A linked list of totals that we have found for a particular header
202 struct aout_link_includes_totals
204 struct aout_link_includes_totals
*next
;
208 /* An entry in the header file hash table. */
210 struct aout_link_includes_entry
212 struct bfd_hash_entry root
;
213 /* List of totals we have found for this file. */
214 struct aout_link_includes_totals
*totals
;
217 /* During the final link step we need to pass around a bunch of
218 information, so we do it in an instance of this structure. */
220 struct aout_final_link_info
222 /* General link information. */
223 struct bfd_link_info
*info
;
226 /* Reloc file positions. */
227 file_ptr treloff
, dreloff
;
228 /* File position of symbols. */
231 struct bfd_strtab_hash
*strtab
;
232 /* Header file hash table. */
233 struct aout_link_includes_table includes
;
234 /* A buffer large enough to hold the contents of any section. */
236 /* A buffer large enough to hold the relocs of any section. */
238 /* A buffer large enough to hold the symbol map of any input BFD. */
240 /* A buffer large enough to hold output symbols of any input BFD. */
241 struct external_nlist
*output_syms
;
244 reloc_howto_type howto_table_pdp11
[] =
246 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
247 HOWTO( 0, 0, 1, 16, FALSE
, 0, complain_overflow_signed
,0,"16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
248 HOWTO( 1, 0, 1, 16, TRUE
, 0, complain_overflow_signed
,0,"DISP16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
251 #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0]))
254 static bfd_boolean
aout_link_check_archive_element (bfd
*, struct bfd_link_info
*, struct bfd_link_hash_entry
*, const char *, bfd_boolean
*);
255 static bfd_boolean
aout_link_add_object_symbols (bfd
*, struct bfd_link_info
*);
256 static bfd_boolean
aout_link_add_symbols (bfd
*, struct bfd_link_info
*);
257 static bfd_boolean
aout_link_write_symbols (struct aout_final_link_info
*, bfd
*);
261 NAME (aout
, reloc_type_lookup
) (bfd
* abfd ATTRIBUTE_UNUSED
,
262 bfd_reloc_code_real_type code
)
267 return &howto_table_pdp11
[0];
268 case BFD_RELOC_16_PCREL
:
269 return &howto_table_pdp11
[1];
276 NAME (aout
, reloc_name_lookup
) (bfd
*abfd ATTRIBUTE_UNUSED
,
282 i
< sizeof (howto_table_pdp11
) / sizeof (howto_table_pdp11
[0]);
284 if (howto_table_pdp11
[i
].name
!= NULL
285 && strcasecmp (howto_table_pdp11
[i
].name
, r_name
) == 0)
286 return &howto_table_pdp11
[i
];
292 pdp11_aout_write_headers (bfd
*abfd
, struct internal_exec
*execp
)
294 struct external_exec exec_bytes
;
295 bfd_size_type text_size
;
298 if (adata(abfd
).magic
== undecided_magic
)
299 NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
);
301 execp
->a_syms
= bfd_get_symcount (abfd
) * EXTERNAL_NLIST_SIZE
;
302 execp
->a_entry
= bfd_get_start_address (abfd
);
304 if (obj_textsec (abfd
)->reloc_count
> 0
305 || obj_datasec (abfd
)->reloc_count
> 0)
307 execp
->a_trsize
= execp
->a_text
;
308 execp
->a_drsize
= execp
->a_data
;
316 NAME (aout
, swap_exec_header_out
) (abfd
, execp
, & exec_bytes
);
318 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
321 if (bfd_bwrite ((void *) &exec_bytes
, (bfd_size_type
) EXEC_BYTES_SIZE
, abfd
)
325 /* Now write out reloc info, followed by syms and strings. */
326 if (bfd_get_outsymbols (abfd
) != NULL
327 && bfd_get_symcount (abfd
) != 0)
329 if (bfd_seek (abfd
, (file_ptr
) (N_SYMOFF(*execp
)), SEEK_SET
) != 0)
332 if (! NAME (aout
, write_syms
) (abfd
))
336 if (obj_textsec (abfd
)->reloc_count
> 0
337 || obj_datasec (abfd
)->reloc_count
> 0)
339 if (bfd_seek (abfd
, (file_ptr
) (N_TRELOFF(*execp
)), SEEK_SET
) != 0
340 || !NAME (aout
, squirt_out_relocs
) (abfd
, obj_textsec (abfd
))
341 || bfd_seek (abfd
, (file_ptr
) (N_DRELOFF(*execp
)), SEEK_SET
) != 0
342 || !NAME (aout
, squirt_out_relocs
) (abfd
, obj_datasec (abfd
)))
349 /* Write an object file.
350 Section contents have already been written. We write the
351 file header, symbols, and relocation. */
354 MY(write_object_contents
) (bfd
*abfd
)
356 struct internal_exec
*execp
= exec_hdr (abfd
);
358 /* We must make certain that the magic number has been set. This
359 will normally have been done by set_section_contents, but only if
360 there actually are some section contents. */
361 if (! abfd
->output_has_begun
)
363 bfd_size_type text_size
;
366 NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
);
369 obj_reloc_entry_size (abfd
) = RELOC_SIZE
;
371 return WRITE_HEADERS (abfd
, execp
);
374 /* Swap the information in an executable header @var{raw_bytes} taken
375 from a raw byte stream memory image into the internal exec header
376 structure "execp". */
378 #ifndef NAME_swap_exec_header_in
380 NAME (aout
, swap_exec_header_in
) (bfd
*abfd
,
381 struct external_exec
*bytes
,
382 struct internal_exec
*execp
)
384 /* The internal_exec structure has some fields that are unused in this
385 configuration (IE for i960), so ensure that all such uninitialized
386 fields are zero'd out. There are places where two of these structs
387 are memcmp'd, and thus the contents do matter. */
388 memset ((void *) execp
, 0, sizeof (struct internal_exec
));
389 /* Now fill in fields in the execp, from the bytes in the raw data. */
390 execp
->a_info
= GET_MAGIC (abfd
, bytes
->e_info
);
391 execp
->a_text
= GET_WORD (abfd
, bytes
->e_text
);
392 execp
->a_data
= GET_WORD (abfd
, bytes
->e_data
);
393 execp
->a_bss
= GET_WORD (abfd
, bytes
->e_bss
);
394 execp
->a_syms
= GET_WORD (abfd
, bytes
->e_syms
);
395 execp
->a_entry
= GET_WORD (abfd
, bytes
->e_entry
);
397 if (GET_WORD (abfd
, bytes
->e_flag
) & A_FLAG_RELOC_STRIPPED
)
404 execp
->a_trsize
= execp
->a_text
;
405 execp
->a_drsize
= execp
->a_data
;
408 #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
411 /* Swap the information in an internal exec header structure
412 "execp" into the buffer "bytes" ready for writing to disk. */
414 NAME (aout
, swap_exec_header_out
) (bfd
*abfd
,
415 struct internal_exec
*execp
,
416 struct external_exec
*bytes
)
418 /* Now fill in fields in the raw data, from the fields in the exec struct. */
419 PUT_MAGIC (abfd
, execp
->a_info
, bytes
->e_info
);
420 PUT_WORD (abfd
, execp
->a_text
, bytes
->e_text
);
421 PUT_WORD (abfd
, execp
->a_data
, bytes
->e_data
);
422 PUT_WORD (abfd
, execp
->a_bss
, bytes
->e_bss
);
423 PUT_WORD (abfd
, execp
->a_syms
, bytes
->e_syms
);
424 PUT_WORD (abfd
, execp
->a_entry
, bytes
->e_entry
);
425 PUT_WORD (abfd
, 0, bytes
->e_unused
);
427 if ((execp
->a_trsize
== 0 || execp
->a_text
== 0)
428 && (execp
->a_drsize
== 0 || execp
->a_data
== 0))
429 PUT_WORD (abfd
, A_FLAG_RELOC_STRIPPED
, bytes
->e_flag
);
430 else if (execp
->a_trsize
== execp
->a_text
431 && execp
->a_drsize
== execp
->a_data
)
432 PUT_WORD (abfd
, 0, bytes
->e_flag
);
435 /* TODO: print a proper warning message. */
436 fprintf (stderr
, "BFD:%s:%d: internal error\n", __FILE__
, __LINE__
);
437 PUT_WORD (abfd
, 0, bytes
->e_flag
);
441 /* Make all the section for an a.out file. */
444 NAME (aout
, make_sections
) (bfd
*abfd
)
446 if (obj_textsec (abfd
) == NULL
&& bfd_make_section (abfd
, ".text") == NULL
)
448 if (obj_datasec (abfd
) == NULL
&& bfd_make_section (abfd
, ".data") == NULL
)
450 if (obj_bsssec (abfd
) == NULL
&& bfd_make_section (abfd
, ".bss") == NULL
)
455 /* Some a.out variant thinks that the file open in ABFD
456 checking is an a.out file. Do some more checking, and set up
457 for access if it really is. Call back to the calling
458 environment's "finish up" function just before returning, to
459 handle any last-minute setup. */
462 NAME (aout
, some_aout_object_p
) (bfd
*abfd
,
463 struct internal_exec
*execp
,
464 const bfd_target
*(*callback_to_real_object_p
) (bfd
*))
466 struct aout_data_struct
*rawptr
, *oldrawptr
;
467 const bfd_target
*result
;
468 bfd_size_type amt
= sizeof (struct aout_data_struct
);
470 rawptr
= bfd_zalloc (abfd
, amt
);
474 oldrawptr
= abfd
->tdata
.aout_data
;
475 abfd
->tdata
.aout_data
= rawptr
;
477 /* Copy the contents of the old tdata struct.
478 In particular, we want the subformat, since for hpux it was set in
479 hp300hpux.c:swap_exec_header_in and will be used in
480 hp300hpux.c:callback. */
481 if (oldrawptr
!= NULL
)
482 *abfd
->tdata
.aout_data
= *oldrawptr
;
484 abfd
->tdata
.aout_data
->a
.hdr
= &rawptr
->e
;
485 *(abfd
->tdata
.aout_data
->a
.hdr
) = *execp
; /* Copy in the internal_exec struct. */
486 execp
= abfd
->tdata
.aout_data
->a
.hdr
;
488 /* Set the file flags. */
489 abfd
->flags
= BFD_NO_FLAGS
;
490 if (execp
->a_drsize
|| execp
->a_trsize
)
491 abfd
->flags
|= HAS_RELOC
;
492 /* Setting of EXEC_P has been deferred to the bottom of this function. */
494 abfd
->flags
|= HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
;
495 if (N_DYNAMIC(*execp
))
496 abfd
->flags
|= DYNAMIC
;
498 if (N_MAGIC (*execp
) == ZMAGIC
)
500 abfd
->flags
|= D_PAGED
| WP_TEXT
;
501 adata (abfd
).magic
= z_magic
;
503 else if (N_MAGIC (*execp
) == NMAGIC
)
505 abfd
->flags
|= WP_TEXT
;
506 adata (abfd
).magic
= n_magic
;
508 else if (N_MAGIC (*execp
) == OMAGIC
)
509 adata (abfd
).magic
= o_magic
;
512 /* Should have been checked with N_BADMAG before this routine
517 bfd_get_start_address (abfd
) = execp
->a_entry
;
519 obj_aout_symbols (abfd
) = NULL
;
520 bfd_get_symcount (abfd
) = execp
->a_syms
/ sizeof (struct external_nlist
);
522 /* The default relocation entry size is that of traditional V7 Unix. */
523 obj_reloc_entry_size (abfd
) = RELOC_SIZE
;
525 /* The default symbol entry size is that of traditional Unix. */
526 obj_symbol_entry_size (abfd
) = EXTERNAL_NLIST_SIZE
;
529 bfd_init_window (&obj_aout_sym_window (abfd
));
530 bfd_init_window (&obj_aout_string_window (abfd
));
533 obj_aout_external_syms (abfd
) = NULL
;
534 obj_aout_external_strings (abfd
) = NULL
;
535 obj_aout_sym_hashes (abfd
) = NULL
;
537 if (! NAME (aout
, make_sections
) (abfd
))
540 obj_datasec (abfd
)->size
= execp
->a_data
;
541 obj_bsssec (abfd
)->size
= execp
->a_bss
;
543 obj_textsec (abfd
)->flags
=
544 (execp
->a_trsize
!= 0
545 ? (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_RELOC
)
546 : (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
));
547 obj_datasec (abfd
)->flags
=
548 (execp
->a_drsize
!= 0
549 ? (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
| SEC_RELOC
)
550 : (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
));
551 obj_bsssec (abfd
)->flags
= SEC_ALLOC
;
553 #ifdef THIS_IS_ONLY_DOCUMENTATION
554 /* The common code can't fill in these things because they depend
555 on either the start address of the text segment, the rounding
556 up of virtual addresses between segments, or the starting file
557 position of the text segment -- all of which varies among different
558 versions of a.out. */
560 /* Call back to the format-dependent code to fill in the rest of the
561 fields and do any further cleanup. Things that should be filled
562 in by the callback: */
563 struct exec
*execp
= exec_hdr (abfd
);
565 obj_textsec (abfd
)->size
= N_TXTSIZE(*execp
);
566 /* Data and bss are already filled in since they're so standard. */
568 /* The virtual memory addresses of the sections. */
569 obj_textsec (abfd
)->vma
= N_TXTADDR(*execp
);
570 obj_datasec (abfd
)->vma
= N_DATADDR(*execp
);
571 obj_bsssec (abfd
)->vma
= N_BSSADDR(*execp
);
573 /* The file offsets of the sections. */
574 obj_textsec (abfd
)->filepos
= N_TXTOFF(*execp
);
575 obj_datasec (abfd
)->filepos
= N_DATOFF(*execp
);
577 /* The file offsets of the relocation info. */
578 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF(*execp
);
579 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF(*execp
);
581 /* The file offsets of the string table and symbol table. */
582 obj_str_filepos (abfd
) = N_STROFF (*execp
);
583 obj_sym_filepos (abfd
) = N_SYMOFF (*execp
);
585 /* Determine the architecture and machine type of the object file. */
586 abfd
->obj_arch
= bfd_arch_obscure
;
588 adata(abfd
)->page_size
= TARGET_PAGE_SIZE
;
589 adata(abfd
)->segment_size
= SEGMENT_SIZE
;
590 adata(abfd
)->exec_bytes_size
= EXEC_BYTES_SIZE
;
594 /* The architecture is encoded in various ways in various a.out variants,
595 or is not encoded at all in some of them. The relocation size depends
596 on the architecture and the a.out variant. Finally, the return value
597 is the bfd_target vector in use. If an error occurs, return zero and
598 set bfd_error to the appropriate error code.
600 Formats such as b.out, which have additional fields in the a.out
601 header, should cope with them in this callback as well. */
602 #endif /* DOCUMENTATION */
604 result
= (*callback_to_real_object_p
)(abfd
);
606 /* Now that the segment addresses have been worked out, take a better
607 guess at whether the file is executable. If the entry point
608 is within the text segment, assume it is. (This makes files
609 executable even if their entry point address is 0, as long as
610 their text starts at zero.).
612 This test had to be changed to deal with systems where the text segment
613 runs at a different location than the default. The problem is that the
614 entry address can appear to be outside the text segment, thus causing an
615 erroneous conclusion that the file isn't executable.
617 To fix this, we now accept any non-zero entry point as an indication of
618 executability. This will work most of the time, since only the linker
619 sets the entry point, and that is likely to be non-zero for most systems. */
621 if (execp
->a_entry
!= 0
622 || (execp
->a_entry
>= obj_textsec(abfd
)->vma
623 && execp
->a_entry
< obj_textsec(abfd
)->vma
+ obj_textsec(abfd
)->size
))
624 abfd
->flags
|= EXEC_P
;
628 struct stat stat_buf
;
630 /* The original heuristic doesn't work in some important cases.
631 The a.out file has no information about the text start
632 address. For files (like kernels) linked to non-standard
633 addresses (ld -Ttext nnn) the entry point may not be between
634 the default text start (obj_textsec(abfd)->vma) and
635 (obj_textsec(abfd)->vma) + text size. This is not just a mach
636 issue. Many kernels are loaded at non standard addresses. */
637 if (abfd
->iostream
!= NULL
638 && (abfd
->flags
& BFD_IN_MEMORY
) == 0
639 && (fstat(fileno((FILE *) (abfd
->iostream
)), &stat_buf
) == 0)
640 && ((stat_buf
.st_mode
& 0111) != 0))
641 abfd
->flags
|= EXEC_P
;
643 #endif /* STAT_FOR_EXEC */
648 abfd
->tdata
.aout_data
= oldrawptr
;
653 /* Initialize ABFD for use with a.out files. */
656 NAME (aout
, mkobject
) (bfd
*abfd
)
658 struct aout_data_struct
*rawptr
;
659 bfd_size_type amt
= sizeof (struct aout_data_struct
);
661 bfd_set_error (bfd_error_system_call
);
663 /* Use an intermediate variable for clarity. */
664 rawptr
= bfd_zalloc (abfd
, amt
);
669 abfd
->tdata
.aout_data
= rawptr
;
670 exec_hdr (abfd
) = &(rawptr
->e
);
672 obj_textsec (abfd
) = NULL
;
673 obj_datasec (abfd
) = NULL
;
674 obj_bsssec (abfd
) = NULL
;
679 /* Keep track of machine architecture and machine type for
680 a.out's. Return the <<machine_type>> for a particular
681 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
682 and machine can't be represented in a.out format.
684 If the architecture is understood, machine type 0 (default)
685 is always understood. */
688 NAME (aout
, machine_type
) (enum bfd_architecture arch
,
689 unsigned long machine
,
690 bfd_boolean
*unknown
)
692 enum machine_type arch_flags
;
694 arch_flags
= M_UNKNOWN
;
701 || machine
== bfd_mach_sparc
702 || machine
== bfd_mach_sparc_sparclite
703 || machine
== bfd_mach_sparc_v9
)
704 arch_flags
= M_SPARC
;
705 else if (machine
== bfd_mach_sparc_sparclet
)
706 arch_flags
= M_SPARCLET
;
712 case 0: arch_flags
= M_68010
; break;
713 case bfd_mach_m68000
: arch_flags
= M_UNKNOWN
; *unknown
= FALSE
; break;
714 case bfd_mach_m68010
: arch_flags
= M_68010
; break;
715 case bfd_mach_m68020
: arch_flags
= M_68020
; break;
716 default: arch_flags
= M_UNKNOWN
; break;
722 || machine
== bfd_mach_i386_i386
723 || machine
== bfd_mach_i386_i386_intel_syntax
)
728 if (machine
== 0) arch_flags
= M_ARM
;
736 case bfd_mach_mips3000
:
737 arch_flags
= M_MIPS1
;
739 case bfd_mach_mips4000
: /* MIPS3 */
740 case bfd_mach_mips4400
:
741 case bfd_mach_mips8000
: /* MIPS4 */
742 case bfd_mach_mips6000
: /* Real MIPS2: */
743 arch_flags
= M_MIPS2
;
746 arch_flags
= M_UNKNOWN
;
754 case 0: arch_flags
= M_NS32532
; break;
755 case 32032: arch_flags
= M_NS32032
; break;
756 case 32532: arch_flags
= M_NS32532
; break;
757 default: arch_flags
= M_UNKNOWN
; break;
762 /* TODO: arch_flags = M_PDP11; */
771 arch_flags
= M_UNKNOWN
;
774 if (arch_flags
!= M_UNKNOWN
)
780 /* Set the architecture and the machine of the ABFD to the
781 values ARCH and MACHINE. Verify that @ABFD's format
782 can support the architecture required. */
785 NAME (aout
, set_arch_mach
) (bfd
*abfd
,
786 enum bfd_architecture arch
,
787 unsigned long machine
)
789 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
792 if (arch
!= bfd_arch_unknown
)
796 NAME (aout
, machine_type
) (arch
, machine
, &unknown
);
801 obj_reloc_entry_size (abfd
) = RELOC_SIZE
;
803 return (*aout_backend_info(abfd
)->set_sizes
) (abfd
);
807 adjust_o_magic (bfd
*abfd
, struct internal_exec
*execp
)
809 file_ptr pos
= adata (abfd
).exec_bytes_size
;
814 obj_textsec (abfd
)->filepos
= pos
;
815 if (! obj_textsec (abfd
)->user_set_vma
)
816 obj_textsec (abfd
)->vma
= vma
;
818 vma
= obj_textsec (abfd
)->vma
;
820 pos
+= obj_textsec (abfd
)->size
;
821 vma
+= obj_textsec (abfd
)->size
;
824 if (!obj_datasec (abfd
)->user_set_vma
)
826 obj_textsec (abfd
)->size
+= pad
;
829 obj_datasec (abfd
)->vma
= vma
;
832 vma
= obj_datasec (abfd
)->vma
;
833 obj_datasec (abfd
)->filepos
= pos
;
834 pos
+= obj_datasec (abfd
)->size
;
835 vma
+= obj_datasec (abfd
)->size
;
838 if (! obj_bsssec (abfd
)->user_set_vma
)
840 obj_datasec (abfd
)->size
+= pad
;
843 obj_bsssec (abfd
)->vma
= vma
;
847 /* The VMA of the .bss section is set by the VMA of the
848 .data section plus the size of the .data section. We may
849 need to add padding bytes to make this true. */
850 pad
= obj_bsssec (abfd
)->vma
- vma
;
853 obj_datasec (abfd
)->size
+= pad
;
857 obj_bsssec (abfd
)->filepos
= pos
;
859 /* Fix up the exec header. */
860 execp
->a_text
= obj_textsec (abfd
)->size
;
861 execp
->a_data
= obj_datasec (abfd
)->size
;
862 execp
->a_bss
= obj_bsssec (abfd
)->size
;
863 N_SET_MAGIC (*execp
, OMAGIC
);
867 adjust_z_magic (bfd
*abfd
, struct internal_exec
*execp
)
869 bfd_size_type data_pad
, text_pad
;
871 const struct aout_backend_data
*abdp
;
872 int ztih
; /* Nonzero if text includes exec header. */
874 abdp
= aout_backend_info (abfd
);
878 && (abdp
->text_includes_header
879 || obj_aout_subformat (abfd
) == q_magic_format
));
880 obj_textsec(abfd
)->filepos
= (ztih
881 ? adata(abfd
).exec_bytes_size
882 : adata(abfd
).zmagic_disk_block_size
);
883 if (! obj_textsec(abfd
)->user_set_vma
)
885 /* ?? Do we really need to check for relocs here? */
886 obj_textsec(abfd
)->vma
= ((abfd
->flags
& HAS_RELOC
)
889 ? (abdp
->default_text_vma
890 + adata (abfd
).exec_bytes_size
)
891 : abdp
->default_text_vma
));
896 /* The .text section is being loaded at an unusual address. We
897 may need to pad it such that the .data section starts at a page
900 text_pad
= ((obj_textsec (abfd
)->filepos
- obj_textsec (abfd
)->vma
)
901 & (adata (abfd
).page_size
- 1));
903 text_pad
= ((- obj_textsec (abfd
)->vma
)
904 & (adata (abfd
).page_size
- 1));
907 /* Find start of data. */
910 text_end
= obj_textsec (abfd
)->filepos
+ obj_textsec (abfd
)->size
;
911 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
915 /* Note that if page_size == zmagic_disk_block_size, then
916 filepos == page_size, and this case is the same as the ztih
918 text_end
= obj_textsec (abfd
)->size
;
919 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
920 text_end
+= obj_textsec (abfd
)->filepos
;
923 obj_textsec (abfd
)->size
+= text_pad
;
924 text_end
+= text_pad
;
927 if (!obj_datasec(abfd
)->user_set_vma
)
930 vma
= obj_textsec(abfd
)->vma
+ obj_textsec(abfd
)->size
;
931 obj_datasec(abfd
)->vma
= BFD_ALIGN (vma
, adata(abfd
).segment_size
);
933 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
935 text_pad
= (obj_datasec(abfd
)->vma
936 - obj_textsec(abfd
)->vma
937 - obj_textsec(abfd
)->size
);
938 obj_textsec(abfd
)->size
+= text_pad
;
940 obj_datasec (abfd
)->filepos
= (obj_textsec (abfd
)->filepos
941 + obj_textsec (abfd
)->size
);
943 /* Fix up exec header while we're at it. */
944 execp
->a_text
= obj_textsec(abfd
)->size
;
945 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
946 execp
->a_text
+= adata(abfd
).exec_bytes_size
;
947 N_SET_MAGIC (*execp
, ZMAGIC
);
949 /* Spec says data section should be rounded up to page boundary. */
950 obj_datasec(abfd
)->size
951 = align_power (obj_datasec(abfd
)->size
,
952 obj_bsssec(abfd
)->alignment_power
);
953 execp
->a_data
= BFD_ALIGN (obj_datasec(abfd
)->size
,
954 adata(abfd
).page_size
);
955 data_pad
= execp
->a_data
- obj_datasec(abfd
)->size
;
958 if (!obj_bsssec(abfd
)->user_set_vma
)
959 obj_bsssec(abfd
)->vma
= (obj_datasec(abfd
)->vma
960 + obj_datasec(abfd
)->size
);
961 /* If the BSS immediately follows the data section and extra space
962 in the page is left after the data section, fudge data
963 in the header so that the bss section looks smaller by that
964 amount. We'll start the bss section there, and lie to the OS.
965 (Note that a linker script, as well as the above assignment,
966 could have explicitly set the BSS vma to immediately follow
967 the data section.) */
968 if (align_power (obj_bsssec(abfd
)->vma
, obj_bsssec(abfd
)->alignment_power
)
969 == obj_datasec(abfd
)->vma
+ obj_datasec(abfd
)->size
)
970 execp
->a_bss
= (data_pad
> obj_bsssec(abfd
)->size
) ? 0 :
971 obj_bsssec(abfd
)->size
- data_pad
;
973 execp
->a_bss
= obj_bsssec(abfd
)->size
;
977 adjust_n_magic (bfd
*abfd
, struct internal_exec
*execp
)
979 file_ptr pos
= adata(abfd
).exec_bytes_size
;
984 obj_textsec(abfd
)->filepos
= pos
;
985 if (!obj_textsec(abfd
)->user_set_vma
)
986 obj_textsec(abfd
)->vma
= vma
;
988 vma
= obj_textsec(abfd
)->vma
;
989 pos
+= obj_textsec(abfd
)->size
;
990 vma
+= obj_textsec(abfd
)->size
;
993 obj_datasec(abfd
)->filepos
= pos
;
994 if (!obj_datasec(abfd
)->user_set_vma
)
995 obj_datasec(abfd
)->vma
= BFD_ALIGN (vma
, adata(abfd
).segment_size
);
996 vma
= obj_datasec(abfd
)->vma
;
998 /* Since BSS follows data immediately, see if it needs alignment. */
999 vma
+= obj_datasec(abfd
)->size
;
1000 pad
= align_power (vma
, obj_bsssec(abfd
)->alignment_power
) - vma
;
1001 obj_datasec(abfd
)->size
+= pad
;
1002 pos
+= obj_datasec(abfd
)->size
;
1005 if (!obj_bsssec(abfd
)->user_set_vma
)
1006 obj_bsssec(abfd
)->vma
= vma
;
1008 vma
= obj_bsssec(abfd
)->vma
;
1010 /* Fix up exec header. */
1011 execp
->a_text
= obj_textsec(abfd
)->size
;
1012 execp
->a_data
= obj_datasec(abfd
)->size
;
1013 execp
->a_bss
= obj_bsssec(abfd
)->size
;
1014 N_SET_MAGIC (*execp
, NMAGIC
);
1018 NAME (aout
, adjust_sizes_and_vmas
) (bfd
*abfd
,
1019 bfd_size_type
*text_size
,
1020 file_ptr
* text_end ATTRIBUTE_UNUSED
)
1022 struct internal_exec
*execp
= exec_hdr (abfd
);
1024 if (! NAME (aout
, make_sections
) (abfd
))
1027 if (adata(abfd
).magic
!= undecided_magic
)
1030 obj_textsec(abfd
)->size
=
1031 align_power(obj_textsec(abfd
)->size
,
1032 obj_textsec(abfd
)->alignment_power
);
1034 *text_size
= obj_textsec (abfd
)->size
;
1035 /* Rule (heuristic) for when to pad to a new page. Note that there
1036 are (at least) two ways demand-paged (ZMAGIC) files have been
1037 handled. Most Berkeley-based systems start the text segment at
1038 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1039 segment right after the exec header; the latter is counted in the
1040 text segment size, and is paged in by the kernel with the rest of
1043 /* This perhaps isn't the right way to do this, but made it simpler for me
1044 to understand enough to implement it. Better would probably be to go
1045 right from BFD flags to alignment/positioning characteristics. But the
1046 old code was sloppy enough about handling the flags, and had enough
1047 other magic, that it was a little hard for me to understand. I think
1048 I understand it better now, but I haven't time to do the cleanup this
1051 if (abfd
->flags
& WP_TEXT
)
1052 adata(abfd
).magic
= n_magic
;
1054 adata(abfd
).magic
= o_magic
;
1056 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1058 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1060 switch (adata(abfd
).magic
) {
1061 case n_magic
: str
= "NMAGIC"; break;
1062 case o_magic
: str
= "OMAGIC"; break;
1063 case z_magic
: str
= "ZMAGIC"; break;
1068 obj_textsec(abfd
)->vma
, obj_textsec(abfd
)->size
,
1069 obj_textsec(abfd
)->alignment_power
,
1070 obj_datasec(abfd
)->vma
, obj_datasec(abfd
)->size
,
1071 obj_datasec(abfd
)->alignment_power
,
1072 obj_bsssec(abfd
)->vma
, obj_bsssec(abfd
)->size
,
1073 obj_bsssec(abfd
)->alignment_power
);
1077 switch (adata(abfd
).magic
)
1080 adjust_o_magic (abfd
, execp
);
1083 adjust_z_magic (abfd
, execp
);
1086 adjust_n_magic (abfd
, execp
);
1092 #ifdef BFD_AOUT_DEBUG
1093 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1094 obj_textsec(abfd
)->vma
, obj_textsec(abfd
)->size
,
1095 obj_textsec(abfd
)->filepos
,
1096 obj_datasec(abfd
)->vma
, obj_datasec(abfd
)->size
,
1097 obj_datasec(abfd
)->filepos
,
1098 obj_bsssec(abfd
)->vma
, obj_bsssec(abfd
)->size
);
1104 /* Called by the BFD in response to a bfd_make_section request. */
1107 NAME (aout
, new_section_hook
) (bfd
*abfd
, asection
*newsect
)
1109 /* Align to double at least. */
1110 newsect
->alignment_power
= bfd_get_arch_info(abfd
)->section_align_power
;
1112 if (bfd_get_format (abfd
) == bfd_object
)
1114 if (obj_textsec (abfd
) == NULL
1115 && !strcmp (newsect
->name
, ".text"))
1117 obj_textsec(abfd
)= newsect
;
1118 newsect
->target_index
= N_TEXT
;
1120 else if (obj_datasec (abfd
) == NULL
1121 && !strcmp (newsect
->name
, ".data"))
1123 obj_datasec (abfd
) = newsect
;
1124 newsect
->target_index
= N_DATA
;
1126 else if (obj_bsssec (abfd
) == NULL
1127 && !strcmp (newsect
->name
, ".bss"))
1129 obj_bsssec (abfd
) = newsect
;
1130 newsect
->target_index
= N_BSS
;
1134 /* We allow more than three sections internally. */
1135 return _bfd_generic_new_section_hook (abfd
, newsect
);
1139 NAME (aout
, set_section_contents
) (bfd
*abfd
,
1141 const void * location
,
1143 bfd_size_type count
)
1146 bfd_size_type text_size
;
1148 if (! abfd
->output_has_begun
)
1150 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, & text_size
, & text_end
))
1154 if (section
== obj_bsssec (abfd
))
1156 bfd_set_error (bfd_error_no_contents
);
1160 if (section
!= obj_textsec (abfd
)
1161 && section
!= obj_datasec (abfd
))
1163 (*_bfd_error_handler
)
1164 ("%s: can not represent section `%s' in a.out object file format",
1165 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, section
));
1166 bfd_set_error (bfd_error_nonrepresentable_section
);
1172 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1173 || bfd_bwrite (location
, count
, abfd
) != count
)
1180 /* Read the external symbols from an a.out file. */
1183 aout_get_external_symbols (bfd
*abfd
)
1185 if (obj_aout_external_syms (abfd
) == NULL
)
1187 bfd_size_type count
;
1188 struct external_nlist
*syms
;
1190 count
= exec_hdr (abfd
)->a_syms
/ EXTERNAL_NLIST_SIZE
;
1192 /* PR 17512: file: 011f5a08. */
1196 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
),
1197 exec_hdr (abfd
)->a_syms
,
1198 &obj_aout_sym_window (abfd
), TRUE
))
1200 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1202 /* We allocate using malloc to make the values easy to free
1203 later on. If we put them on the objalloc it might not be
1204 possible to free them. */
1205 syms
= bfd_malloc (count
* EXTERNAL_NLIST_SIZE
);
1206 if (syms
== NULL
&& count
!= 0)
1209 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1210 || (bfd_bread (syms
, exec_hdr (abfd
)->a_syms
, abfd
)
1211 != exec_hdr (abfd
)->a_syms
))
1218 obj_aout_external_syms (abfd
) = syms
;
1219 obj_aout_external_sym_count (abfd
) = count
;
1222 if (obj_aout_external_strings (abfd
) == NULL
1223 && exec_hdr (abfd
)->a_syms
!= 0)
1225 unsigned char string_chars
[BYTES_IN_LONG
];
1226 bfd_size_type stringsize
;
1229 /* Get the size of the strings. */
1230 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1231 || (bfd_bread ((void *) string_chars
, (bfd_size_type
) BYTES_IN_LONG
,
1232 abfd
) != BYTES_IN_LONG
))
1234 stringsize
= H_GET_32 (abfd
, string_chars
);
1237 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
,
1238 &obj_aout_string_window (abfd
), TRUE
))
1240 strings
= (char *) obj_aout_string_window (abfd
).data
;
1242 strings
= bfd_malloc (stringsize
+ 1);
1243 if (strings
== NULL
)
1246 /* Skip space for the string count in the buffer for convenience
1247 when using indexes. */
1248 if (bfd_bread (strings
+ 4, stringsize
- 4, abfd
) != stringsize
- 4)
1254 /* Ensure that a zero index yields an empty string. */
1257 strings
[stringsize
- 1] = 0;
1259 obj_aout_external_strings (abfd
) = strings
;
1260 obj_aout_external_string_size (abfd
) = stringsize
;
1266 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1267 and symbol->value fields of CACHE_PTR will be set from the a.out
1268 nlist structure. This function is responsible for setting
1269 symbol->flags and symbol->section, and adjusting symbol->value. */
1272 translate_from_native_sym_flags (bfd
*abfd
,
1273 aout_symbol_type
*cache_ptr
)
1277 if (cache_ptr
->type
== N_FN
)
1281 /* This is a debugging symbol. */
1282 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1284 /* Work out the symbol section. */
1285 switch (cache_ptr
->type
& N_TYPE
)
1289 sec
= obj_textsec (abfd
);
1292 sec
= obj_datasec (abfd
);
1295 sec
= obj_bsssec (abfd
);
1299 sec
= bfd_abs_section_ptr
;
1303 cache_ptr
->symbol
.section
= sec
;
1304 cache_ptr
->symbol
.value
-= sec
->vma
;
1309 /* Get the default visibility. This does not apply to all types, so
1310 we just hold it in a local variable to use if wanted. */
1311 if ((cache_ptr
->type
& N_EXT
) == 0)
1312 visible
= BSF_LOCAL
;
1314 visible
= BSF_GLOBAL
;
1316 switch (cache_ptr
->type
)
1319 case N_ABS
: case N_ABS
| N_EXT
:
1320 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1321 cache_ptr
->symbol
.flags
= visible
;
1324 case N_UNDF
| N_EXT
:
1325 if (cache_ptr
->symbol
.value
!= 0)
1327 /* This is a common symbol. */
1328 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1329 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1333 cache_ptr
->symbol
.flags
= 0;
1334 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1338 case N_TEXT
: case N_TEXT
| N_EXT
:
1339 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1340 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1341 cache_ptr
->symbol
.flags
= visible
;
1344 case N_DATA
: case N_DATA
| N_EXT
:
1345 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1346 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1347 cache_ptr
->symbol
.flags
= visible
;
1350 case N_BSS
: case N_BSS
| N_EXT
:
1351 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1352 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1353 cache_ptr
->symbol
.flags
= visible
;
1360 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1363 translate_to_native_sym_flags (bfd
*abfd
,
1365 struct external_nlist
*sym_pointer
)
1367 bfd_vma value
= cache_ptr
->value
;
1371 /* Mask out any existing type bits in case copying from one section
1373 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1375 sec
= bfd_get_section (cache_ptr
);
1380 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1382 (*_bfd_error_handler
)
1383 ("%B: can not represent section for symbol `%s' in a.out object file format",
1384 abfd
, cache_ptr
->name
!= NULL
? cache_ptr
->name
: "*unknown*");
1385 bfd_set_error (bfd_error_nonrepresentable_section
);
1389 if (sec
->output_section
!= NULL
)
1391 off
= sec
->output_offset
;
1392 sec
= sec
->output_section
;
1395 if (bfd_is_abs_section (sec
))
1396 sym_pointer
->e_type
[0] |= N_ABS
;
1397 else if (sec
== obj_textsec (abfd
))
1398 sym_pointer
->e_type
[0] |= N_TEXT
;
1399 else if (sec
== obj_datasec (abfd
))
1400 sym_pointer
->e_type
[0] |= N_DATA
;
1401 else if (sec
== obj_bsssec (abfd
))
1402 sym_pointer
->e_type
[0] |= N_BSS
;
1403 else if (bfd_is_und_section (sec
))
1404 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1405 else if (bfd_is_com_section (sec
))
1406 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1409 (*_bfd_error_handler
)
1410 ("%B: can not represent section `%A' in a.out object file format",
1412 bfd_set_error (bfd_error_nonrepresentable_section
);
1416 /* Turn the symbol from section relative to absolute again */
1417 value
+= sec
->vma
+ off
;
1419 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1420 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1421 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1422 sym_pointer
->e_type
[0] |= N_EXT
;
1424 PUT_WORD(abfd
, value
, sym_pointer
->e_value
);
1429 /* Native-level interface to symbols. */
1432 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1434 bfd_size_type amt
= sizeof (aout_symbol_type
);
1435 aout_symbol_type
*new_symbol_type
= bfd_zalloc (abfd
, amt
);
1437 if (!new_symbol_type
)
1439 new_symbol_type
->symbol
.the_bfd
= abfd
;
1441 return &new_symbol_type
->symbol
;
1444 /* Translate a set of internal symbols into external symbols. */
1447 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1448 aout_symbol_type
*in
,
1449 struct external_nlist
*ext
,
1450 bfd_size_type count
,
1452 bfd_size_type strsize
,
1453 bfd_boolean dynamic
)
1455 struct external_nlist
*ext_end
;
1457 ext_end
= ext
+ count
;
1458 for (; ext
< ext_end
; ext
++, in
++)
1462 x
= GET_WORD (abfd
, ext
->e_strx
);
1463 in
->symbol
.the_bfd
= abfd
;
1465 /* For the normal symbols, the zero index points at the number
1466 of bytes in the string table but is to be interpreted as the
1467 null string. For the dynamic symbols, the number of bytes in
1468 the string table is stored in the __DYNAMIC structure and the
1469 zero index points at an actual string. */
1470 if (x
== 0 && ! dynamic
)
1471 in
->symbol
.name
= "";
1472 else if (x
< strsize
)
1473 in
->symbol
.name
= str
+ x
;
1477 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1478 /* TODO: is 0 a safe value here? */
1481 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1482 in
->symbol
.udata
.p
= NULL
;
1484 if (! translate_from_native_sym_flags (abfd
, in
))
1488 in
->symbol
.flags
|= BSF_DYNAMIC
;
1494 /* We read the symbols into a buffer, which is discarded when this
1495 function exits. We read the strings into a buffer large enough to
1496 hold them all plus all the cached symbol entries. */
1499 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1501 struct external_nlist
*old_external_syms
;
1502 aout_symbol_type
*cached
;
1503 bfd_size_type cached_size
;
1505 /* If there's no work to be done, don't do any. */
1506 if (obj_aout_symbols (abfd
) != NULL
)
1509 old_external_syms
= obj_aout_external_syms (abfd
);
1511 if (! aout_get_external_symbols (abfd
))
1514 cached_size
= obj_aout_external_sym_count (abfd
);
1515 cached_size
*= sizeof (aout_symbol_type
);
1516 cached
= bfd_zmalloc (cached_size
);
1517 if (cached
== NULL
&& cached_size
!= 0)
1520 /* Convert from external symbol information to internal. */
1521 if (! (NAME (aout
, translate_symbol_table
)
1523 obj_aout_external_syms (abfd
),
1524 obj_aout_external_sym_count (abfd
),
1525 obj_aout_external_strings (abfd
),
1526 obj_aout_external_string_size (abfd
),
1533 bfd_get_symcount (abfd
) = obj_aout_external_sym_count (abfd
);
1535 obj_aout_symbols (abfd
) = cached
;
1537 /* It is very likely that anybody who calls this function will not
1538 want the external symbol information, so if it was allocated
1539 because of our call to aout_get_external_symbols, we free it up
1540 right away to save space. */
1541 if (old_external_syms
== NULL
1542 && obj_aout_external_syms (abfd
) != NULL
)
1545 bfd_free_window (&obj_aout_sym_window (abfd
));
1547 free (obj_aout_external_syms (abfd
));
1549 obj_aout_external_syms (abfd
) = NULL
;
1555 /* We use a hash table when writing out symbols so that we only write
1556 out a particular string once. This helps particularly when the
1557 linker writes out stabs debugging entries, because each different
1558 contributing object file tends to have many duplicate stabs
1561 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1562 if BFD_TRADITIONAL_FORMAT is set. */
1564 /* Get the index of a string in a strtab, adding it if it is not
1567 static INLINE bfd_size_type
1568 add_to_stringtab (bfd
*abfd
,
1569 struct bfd_strtab_hash
*tab
,
1574 bfd_size_type str_index
;
1576 /* An index of 0 always means the empty string. */
1577 if (str
== 0 || *str
== '\0')
1580 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1581 doesn't understand a hashed string table. */
1583 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1586 str_index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1588 if (str_index
!= (bfd_size_type
) -1)
1589 /* Add BYTES_IN_LONG to the return value to account for the
1590 space taken up by the string table size. */
1591 str_index
+= BYTES_IN_LONG
;
1596 /* Write out a strtab. ABFD is already at the right location in the
1600 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1602 bfd_byte buffer
[BYTES_IN_LONG
];
1604 /* The string table starts with the size. */
1605 H_PUT_32 (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_LONG
, buffer
);
1606 if (bfd_bwrite ((void *) buffer
, (bfd_size_type
) BYTES_IN_LONG
, abfd
)
1610 return _bfd_stringtab_emit (abfd
, tab
);
1614 NAME (aout
, write_syms
) (bfd
*abfd
)
1616 unsigned int count
;
1617 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1618 struct bfd_strtab_hash
*strtab
;
1620 strtab
= _bfd_stringtab_init ();
1624 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1626 asymbol
*g
= generic
[count
];
1628 struct external_nlist nsp
;
1630 PUT_WORD (abfd
, 0, nsp
.e_unused
);
1632 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1633 if (indx
== (bfd_size_type
) -1)
1635 PUT_WORD (abfd
, indx
, nsp
.e_strx
);
1637 if (bfd_asymbol_flavour(g
) == abfd
->xvec
->flavour
)
1638 H_PUT_8 (abfd
, aout_symbol(g
)->type
, nsp
.e_type
);
1640 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1642 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1645 H_PUT_8 (abfd
, 0, nsp
.e_ovly
);
1647 if (bfd_bwrite ((void *)&nsp
, (bfd_size_type
) EXTERNAL_NLIST_SIZE
, abfd
)
1648 != EXTERNAL_NLIST_SIZE
)
1651 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1652 here, at the end. */
1656 if (! emit_stringtab (abfd
, strtab
))
1659 _bfd_stringtab_free (strtab
);
1664 _bfd_stringtab_free (strtab
);
1670 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1672 unsigned int counter
= 0;
1673 aout_symbol_type
*symbase
;
1675 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1678 for (symbase
= obj_aout_symbols (abfd
); counter
++ < bfd_get_symcount (abfd
);)
1679 *(location
++) = (asymbol
*)(symbase
++);
1681 return bfd_get_symcount (abfd
);
1685 /* Output extended relocation information to a file in target byte order. */
1688 pdp11_aout_swap_reloc_out (bfd
*abfd
, arelent
*g
, bfd_byte
*natptr
)
1694 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1695 asection
*output_section
= sym
->section
->output_section
;
1698 fprintf (stderr
, "BFD: can't do this reloc addend stuff\n");
1700 r_pcrel
= g
->howto
->pc_relative
;
1702 if (bfd_is_abs_section (output_section
))
1704 else if (output_section
== obj_textsec (abfd
))
1706 else if (output_section
== obj_datasec (abfd
))
1708 else if (output_section
== obj_bsssec (abfd
))
1710 else if (bfd_is_und_section (output_section
))
1712 else if (bfd_is_com_section (output_section
))
1717 BFD_ASSERT (r_type
!= -1);
1722 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
1724 reloc_entry
= r_index
<< 4 | r_type
| r_pcrel
;
1726 PUT_WORD (abfd
, reloc_entry
, natptr
);
1729 /* BFD deals internally with all things based from the section they're
1730 in. so, something in 10 bytes into a text section with a base of
1731 50 would have a symbol (.text+10) and know .text vma was 50.
1733 Aout keeps all it's symbols based from zero, so the symbol would
1734 contain 60. This macro subs the base of each section from the value
1735 to give the true offset from the section */
1738 #define MOVE_ADDRESS(ad) \
1741 /* Undefined symbol. */ \
1742 cache_ptr->sym_ptr_ptr = symbols + r_index; \
1743 cache_ptr->addend = ad; \
1747 /* Defined, section relative. replace symbol with pointer to \
1748 symbol which points to section. */ \
1752 case N_TEXT | N_EXT: \
1753 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
1754 cache_ptr->addend = ad - su->textsec->vma; \
1757 case N_DATA | N_EXT: \
1758 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
1759 cache_ptr->addend = ad - su->datasec->vma; \
1762 case N_BSS | N_EXT: \
1763 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
1764 cache_ptr->addend = ad - su->bsssec->vma; \
1768 case N_ABS | N_EXT: \
1769 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
1770 cache_ptr->addend = ad; \
1776 pdp11_aout_swap_reloc_in (bfd
* abfd
,
1778 arelent
* cache_ptr
,
1779 bfd_size_type offset
,
1781 bfd_size_type symcount
)
1783 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
1784 unsigned int r_index
;
1789 reloc_entry
= GET_WORD (abfd
, (void *) bytes
);
1791 r_pcrel
= reloc_entry
& RELFLG
;
1793 cache_ptr
->address
= offset
;
1794 cache_ptr
->howto
= howto_table_pdp11
+ (r_pcrel
? 1 : 0);
1796 if ((reloc_entry
& RTYPE
) == RABS
)
1799 r_index
= RINDEX (reloc_entry
);
1801 /* r_extern reflects whether the symbol the reloc is against is
1803 r_extern
= (reloc_entry
& RTYPE
) == REXT
;
1805 if (r_extern
&& r_index
> symcount
)
1807 /* We could arrange to return an error, but it might be useful
1808 to see the file even if it is bad. */
1816 /* Read and swap the relocs for a section. */
1819 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
1822 bfd_size_type count
;
1823 bfd_size_type reloc_size
;
1825 arelent
*reloc_cache
;
1827 unsigned int counter
= 0;
1830 if (asect
->relocation
)
1833 if (asect
->flags
& SEC_CONSTRUCTOR
)
1836 if (asect
== obj_datasec (abfd
))
1837 reloc_size
= exec_hdr(abfd
)->a_drsize
;
1838 else if (asect
== obj_textsec (abfd
))
1839 reloc_size
= exec_hdr(abfd
)->a_trsize
;
1840 else if (asect
== obj_bsssec (abfd
))
1844 bfd_set_error (bfd_error_invalid_operation
);
1848 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
1851 each_size
= obj_reloc_entry_size (abfd
);
1853 relocs
= bfd_malloc (reloc_size
);
1854 if (relocs
== NULL
&& reloc_size
!= 0)
1857 if (bfd_bread (relocs
, reloc_size
, abfd
) != reloc_size
)
1863 count
= reloc_size
/ each_size
;
1865 /* Count the number of NON-ZERO relocs, this is the count we want. */
1867 unsigned int real_count
= 0;
1869 for (counter
= 0; counter
< count
; counter
++)
1873 x
= GET_WORD (abfd
, (char *) relocs
+ each_size
* counter
);
1881 reloc_cache
= bfd_zmalloc (count
* sizeof (arelent
));
1882 if (reloc_cache
== NULL
&& count
!= 0)
1885 cache_ptr
= reloc_cache
;
1890 counter
++, rptr
+= RELOC_SIZE
, cache_ptr
++)
1892 while (GET_WORD (abfd
, (void *) rptr
) == 0)
1895 if ((char *) rptr
>= (char *) relocs
+ reloc_size
)
1899 pdp11_aout_swap_reloc_in (abfd
, rptr
, cache_ptr
,
1900 (bfd_size_type
) ((char *) rptr
- (char *) relocs
),
1902 (bfd_size_type
) bfd_get_symcount (abfd
));
1905 /* Just in case, if rptr >= relocs + reloc_size should happen
1907 BFD_ASSERT (counter
== count
);
1911 asect
->relocation
= reloc_cache
;
1912 asect
->reloc_count
= cache_ptr
- reloc_cache
;
1917 /* Write out a relocation section into an object file. */
1920 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
1923 unsigned char *native
;
1924 unsigned int count
= section
->reloc_count
;
1925 bfd_size_type natsize
;
1927 natsize
= section
->size
;
1928 native
= bfd_zalloc (abfd
, natsize
);
1932 generic
= section
->orelocation
;
1933 if (generic
!= NULL
)
1939 r
= native
+ (*generic
)->address
;
1940 pdp11_aout_swap_reloc_out (abfd
, *generic
, r
);
1946 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
1948 bfd_release (abfd
, native
);
1952 bfd_release (abfd
, native
);
1956 /* This is stupid. This function should be a boolean predicate. */
1959 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
1964 arelent
*tblptr
= section
->relocation
;
1967 if (section
== obj_bsssec (abfd
))
1973 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
)(abfd
, section
, symbols
)))
1976 if (section
->flags
& SEC_CONSTRUCTOR
)
1978 arelent_chain
*chain
= section
->constructor_chain
;
1980 for (count
= 0; count
< section
->reloc_count
; count
++)
1982 *relptr
++ = &chain
->relent
;
1983 chain
= chain
->next
;
1988 tblptr
= section
->relocation
;
1990 for (count
= 0; count
++ < section
->reloc_count
;)
1991 *relptr
++ = tblptr
++;
1996 return section
->reloc_count
;
2000 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
2002 if (bfd_get_format (abfd
) != bfd_object
)
2004 bfd_set_error (bfd_error_invalid_operation
);
2008 if (asect
->flags
& SEC_CONSTRUCTOR
)
2009 return (sizeof (arelent
*) * (asect
->reloc_count
+ 1));
2011 if (asect
== obj_datasec (abfd
))
2012 return (sizeof (arelent
*)
2013 * ((exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
))
2016 if (asect
== obj_textsec (abfd
))
2017 return (sizeof (arelent
*)
2018 * ((exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
))
2021 /* TODO: why are there two if statements for obj_bsssec()? */
2023 if (asect
== obj_bsssec (abfd
))
2024 return sizeof (arelent
*);
2026 if (asect
== obj_bsssec (abfd
))
2029 bfd_set_error (bfd_error_invalid_operation
);
2035 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2037 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2040 return (bfd_get_symcount (abfd
) + 1) * (sizeof (aout_symbol_type
*));
2044 NAME (aout
, get_lineno
) (bfd
* abfd ATTRIBUTE_UNUSED
,
2045 asymbol
* symbol ATTRIBUTE_UNUSED
)
2051 NAME (aout
, get_symbol_info
) (bfd
* abfd ATTRIBUTE_UNUSED
,
2055 bfd_symbol_info (symbol
, ret
);
2057 if (ret
->type
== '?')
2059 int type_code
= aout_symbol(symbol
)->type
& 0xff;
2060 const char *stab_name
= bfd_get_stab_name (type_code
);
2061 static char buf
[10];
2063 if (stab_name
== NULL
)
2065 sprintf(buf
, "(%d)", type_code
);
2069 ret
->stab_type
= type_code
;
2070 ret
->stab_other
= (unsigned) (aout_symbol(symbol
)->other
& 0xff);
2071 ret
->stab_desc
= (unsigned) (aout_symbol(symbol
)->desc
& 0xffff);
2072 ret
->stab_name
= stab_name
;
2077 NAME (aout
, print_symbol
) (bfd
* abfd
,
2080 bfd_print_symbol_type how
)
2082 FILE *file
= (FILE *) afile
;
2086 case bfd_print_symbol_name
:
2088 fprintf(file
,"%s", symbol
->name
);
2090 case bfd_print_symbol_more
:
2091 fprintf(file
,"%4x %2x %2x",
2092 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2093 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2094 (unsigned) (aout_symbol (symbol
)->type
));
2096 case bfd_print_symbol_all
:
2098 const char *section_name
= symbol
->section
->name
;
2100 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
2102 fprintf (file
," %-5s %04x %02x %02x",
2104 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2105 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2106 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2108 fprintf(file
," %s", symbol
->name
);
2114 /* If we don't have to allocate more than 1MB to hold the generic
2115 symbols, we use the generic minisymbol method: it's faster, since
2116 it only translates the symbols once, not multiple times. */
2117 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2119 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2120 symbols. The minisymbol_to_symbol function translates these into
2121 BFD asymbol structures. */
2124 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2125 bfd_boolean dynamic
,
2127 unsigned int *sizep
)
2130 /* We could handle the dynamic symbols here as well, but it's
2131 easier to hand them off. */
2132 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2134 if (! aout_get_external_symbols (abfd
))
2137 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2138 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2140 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2142 /* By passing the external symbols back from this routine, we are
2143 giving up control over the memory block. Clear
2144 obj_aout_external_syms, so that we do not try to free it
2146 obj_aout_external_syms (abfd
) = NULL
;
2148 *sizep
= EXTERNAL_NLIST_SIZE
;
2149 return obj_aout_external_sym_count (abfd
);
2152 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2153 unmodified a.out symbol. The SYM argument is a structure returned
2154 by bfd_make_empty_symbol, which we fill in here. */
2157 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2158 bfd_boolean dynamic
,
2159 const void * minisym
,
2163 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2164 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2166 memset (sym
, 0, sizeof (aout_symbol_type
));
2168 /* We call translate_symbol_table to translate a single symbol. */
2169 if (! (NAME (aout
, translate_symbol_table
)
2171 (aout_symbol_type
*) sym
,
2172 (struct external_nlist
*) minisym
,
2174 obj_aout_external_strings (abfd
),
2175 obj_aout_external_string_size (abfd
),
2182 /* Provided a BFD, a section and an offset into the section, calculate
2183 and return the name of the source file and the line nearest to the
2187 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2191 const char **filename_ptr
,
2192 const char **functionname_ptr
,
2193 unsigned int *line_ptr
,
2194 unsigned int *discriminator_ptr
)
2196 /* Run down the file looking for the filename, function and linenumber. */
2198 const char *directory_name
= NULL
;
2199 const char *main_file_name
= NULL
;
2200 const char *current_file_name
= NULL
;
2201 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2202 bfd_vma low_line_vma
= 0;
2203 bfd_vma low_func_vma
= 0;
2205 size_t filelen
, funclen
;
2208 *filename_ptr
= abfd
->filename
;
2209 *functionname_ptr
= 0;
2211 if (discriminator_ptr
)
2212 *discriminator_ptr
= 0;
2214 if (symbols
!= NULL
)
2216 for (p
= symbols
; *p
; p
++)
2218 aout_symbol_type
*q
= (aout_symbol_type
*)(*p
);
2223 /* If this looks like a file name symbol, and it comes after
2224 the line number we have found so far, but before the
2225 offset, then we have probably not found the right line
2227 if (q
->symbol
.value
<= offset
2228 && ((q
->symbol
.value
> low_line_vma
2229 && (line_file_name
!= NULL
2231 || (q
->symbol
.value
> low_func_vma
2234 const char * symname
;
2236 symname
= q
->symbol
.name
;
2237 if (strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2239 if (q
->symbol
.value
> low_line_vma
)
2242 line_file_name
= NULL
;
2244 if (q
->symbol
.value
> low_func_vma
)
2251 /* If this symbol is less than the offset, but greater than
2252 the line number we have found so far, then we have not
2253 found the right line number. */
2254 if (q
->symbol
.value
<= offset
)
2256 if (q
->symbol
.value
> low_line_vma
)
2259 line_file_name
= NULL
;
2261 if (q
->symbol
.value
> low_func_vma
)
2265 main_file_name
= current_file_name
= q
->symbol
.name
;
2266 /* Look ahead to next symbol to check if that too is an N_SO. */
2270 q
= (aout_symbol_type
*)(*p
);
2271 if (q
->type
!= (int) N_SO
)
2274 /* Found a second N_SO First is directory; second is filename. */
2275 directory_name
= current_file_name
;
2276 main_file_name
= current_file_name
= q
->symbol
.name
;
2277 if (obj_textsec(abfd
) != section
)
2281 current_file_name
= q
->symbol
.name
;
2287 /* We'll keep this if it resolves nearer than the one we have
2289 if (q
->symbol
.value
>= low_line_vma
2290 && q
->symbol
.value
<= offset
)
2292 *line_ptr
= q
->desc
;
2293 low_line_vma
= q
->symbol
.value
;
2294 line_file_name
= current_file_name
;
2300 /* We'll keep this if it is nearer than the one we have already. */
2301 if (q
->symbol
.value
>= low_func_vma
&&
2302 q
->symbol
.value
<= offset
)
2304 low_func_vma
= q
->symbol
.value
;
2305 func
= (asymbol
*) q
;
2307 else if (q
->symbol
.value
> offset
)
2317 main_file_name
= line_file_name
;
2319 if (main_file_name
== NULL
2320 || main_file_name
[0] == '/'
2321 || directory_name
== NULL
)
2324 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2328 funclen
= strlen (bfd_asymbol_name (func
));
2330 if (adata (abfd
).line_buf
!= NULL
)
2331 free (adata (abfd
).line_buf
);
2332 if (filelen
+ funclen
== 0)
2333 adata (abfd
).line_buf
= buf
= NULL
;
2336 buf
= bfd_malloc ((bfd_size_type
) filelen
+ funclen
+ 3);
2337 adata (abfd
).line_buf
= buf
;
2342 if (main_file_name
!= NULL
)
2344 if (main_file_name
[0] == '/' || directory_name
== NULL
)
2345 *filename_ptr
= main_file_name
;
2348 sprintf (buf
, "%s%s", directory_name
, main_file_name
);
2349 *filename_ptr
= buf
;
2356 const char *function
= func
->name
;
2359 /* The caller expects a symbol name. We actually have a
2360 function name, without the leading underscore. Put the
2361 underscore back in, so that the caller gets a symbol name. */
2362 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2363 strcpy (buf
, function
);
2366 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2367 strcpy (buf
+ 1, function
);
2370 /* Have to remove : stuff. */
2371 colon
= strchr (buf
, ':');
2374 *functionname_ptr
= buf
;
2381 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2382 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2384 return adata (abfd
).exec_bytes_size
;
2387 /* Free all information we have cached for this BFD. We can always
2388 read it again later if we need it. */
2391 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2395 if (bfd_get_format (abfd
) != bfd_object
)
2398 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2399 BFCI_FREE (obj_aout_symbols (abfd
));
2402 obj_aout_external_syms (abfd
) = 0;
2403 bfd_free_window (&obj_aout_sym_window (abfd
));
2404 bfd_free_window (&obj_aout_string_window (abfd
));
2405 obj_aout_external_strings (abfd
) = 0;
2407 BFCI_FREE (obj_aout_external_syms (abfd
));
2408 BFCI_FREE (obj_aout_external_strings (abfd
));
2410 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2411 BFCI_FREE (o
->relocation
);
2417 /* Routine to create an entry in an a.out link hash table. */
2419 struct bfd_hash_entry
*
2420 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2421 struct bfd_hash_table
*table
,
2424 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2426 /* Allocate the structure if it has not already been allocated by a
2429 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
2433 /* Call the allocation method of the superclass. */
2434 ret
= (struct aout_link_hash_entry
*)
2435 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
);
2438 /* Set local fields. */
2439 ret
->written
= FALSE
;
2443 return (struct bfd_hash_entry
*) ret
;
2446 /* Initialize an a.out link hash table. */
2449 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2451 struct bfd_hash_entry
*(*newfunc
) (struct bfd_hash_entry
*,
2452 struct bfd_hash_table
*,
2454 unsigned int entsize
)
2456 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2459 /* Create an a.out link hash table. */
2461 struct bfd_link_hash_table
*
2462 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2464 struct aout_link_hash_table
*ret
;
2465 bfd_size_type amt
= sizeof (struct aout_link_hash_table
);
2467 ret
= bfd_malloc (amt
);
2470 if (! NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2471 NAME (aout
, link_hash_newfunc
),
2472 sizeof (struct aout_link_hash_entry
)))
2480 /* Free up the internal symbols read from an a.out file. */
2483 aout_link_free_symbols (bfd
*abfd
)
2485 if (obj_aout_external_syms (abfd
) != NULL
)
2488 bfd_free_window (&obj_aout_sym_window (abfd
));
2490 free ((void *) obj_aout_external_syms (abfd
));
2492 obj_aout_external_syms (abfd
) = NULL
;
2495 if (obj_aout_external_strings (abfd
) != NULL
)
2498 bfd_free_window (&obj_aout_string_window (abfd
));
2500 free ((void *) obj_aout_external_strings (abfd
));
2502 obj_aout_external_strings (abfd
) = NULL
;
2507 /* Given an a.out BFD, add symbols to the global hash table as
2511 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
2513 switch (bfd_get_format (abfd
))
2516 return aout_link_add_object_symbols (abfd
, info
);
2518 return _bfd_generic_link_add_archive_symbols
2519 (abfd
, info
, aout_link_check_archive_element
);
2521 bfd_set_error (bfd_error_wrong_format
);
2526 /* Add symbols from an a.out object file. */
2529 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2531 if (! aout_get_external_symbols (abfd
))
2533 if (! aout_link_add_symbols (abfd
, info
))
2535 if (! info
->keep_memory
)
2537 if (! aout_link_free_symbols (abfd
))
2543 /* Look through the internal symbols to see if this object file should
2544 be included in the link. We should include this object file if it
2545 defines any symbols which are currently undefined. If this object
2546 file defines a common symbol, then we may adjust the size of the
2547 known symbol but we do not include the object file in the link
2548 (unless there is some other reason to include it). */
2551 aout_link_check_ar_symbols (bfd
*abfd
,
2552 struct bfd_link_info
*info
,
2553 bfd_boolean
*pneeded
,
2556 struct external_nlist
*p
;
2557 struct external_nlist
*pend
;
2562 /* Look through all the symbols. */
2563 p
= obj_aout_external_syms (abfd
);
2564 pend
= p
+ obj_aout_external_sym_count (abfd
);
2565 strings
= obj_aout_external_strings (abfd
);
2566 for (; p
< pend
; p
++)
2568 int type
= H_GET_8 (abfd
, p
->e_type
);
2570 struct bfd_link_hash_entry
*h
;
2572 /* Ignore symbols that are not externally visible. This is an
2573 optimization only, as we check the type more thoroughly
2575 if ((type
& N_EXT
) == 0
2579 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
2580 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2582 /* We are only interested in symbols that are currently
2583 undefined or common. */
2585 || (h
->type
!= bfd_link_hash_undefined
2586 && h
->type
!= bfd_link_hash_common
))
2589 if (type
== (N_TEXT
| N_EXT
)
2590 || type
== (N_DATA
| N_EXT
)
2591 || type
== (N_BSS
| N_EXT
)
2592 || type
== (N_ABS
| N_EXT
))
2594 /* This object file defines this symbol. We must link it
2595 in. This is true regardless of whether the current
2596 definition of the symbol is undefined or common. If the
2597 current definition is common, we have a case in which we
2598 have already seen an object file including
2600 and this object file from the archive includes
2602 In such a case we must include this object file.
2604 FIXME: The SunOS 4.1.3 linker will pull in the archive
2605 element if the symbol is defined in the .data section,
2606 but not if it is defined in the .text section. That
2607 seems a bit crazy to me, and I haven't implemented it.
2608 However, it might be correct. */
2609 if (!(*info
->callbacks
2610 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2616 if (type
== (N_UNDF
| N_EXT
))
2620 value
= GET_WORD (abfd
, p
->e_value
);
2623 /* This symbol is common in the object from the archive
2625 if (h
->type
== bfd_link_hash_undefined
)
2630 symbfd
= h
->u
.undef
.abfd
;
2633 /* This symbol was created as undefined from
2634 outside BFD. We assume that we should link
2635 in the object file. This is done for the -u
2636 option in the linker. */
2637 if (!(*info
->callbacks
2638 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2643 /* Turn the current link symbol into a common
2644 symbol. It is already on the undefs list. */
2645 h
->type
= bfd_link_hash_common
;
2646 h
->u
.c
.p
= bfd_hash_allocate (&info
->hash
->table
,
2647 sizeof (struct bfd_link_hash_common_entry
));
2648 if (h
->u
.c
.p
== NULL
)
2651 h
->u
.c
.size
= value
;
2653 /* FIXME: This isn't quite right. The maximum
2654 alignment of a common symbol should be set by the
2655 architecture of the output file, not of the input
2657 power
= bfd_log2 (value
);
2658 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
2659 power
= bfd_get_arch_info (abfd
)->section_align_power
;
2660 h
->u
.c
.p
->alignment_power
= power
;
2662 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
2667 /* Adjust the size of the common symbol if
2669 if (value
> h
->u
.c
.size
)
2670 h
->u
.c
.size
= value
;
2676 /* We do not need this object file. */
2680 /* Check a single archive element to see if we need to include it in
2681 the link. *PNEEDED is set according to whether this element is
2682 needed in the link or not. This is called from
2683 _bfd_generic_link_add_archive_symbols. */
2686 aout_link_check_archive_element (bfd
*abfd
,
2687 struct bfd_link_info
*info
,
2688 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
2689 const char *name ATTRIBUTE_UNUSED
,
2690 bfd_boolean
*pneeded
)
2695 if (!aout_get_external_symbols (abfd
))
2699 if (!aout_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
2705 /* Potentially, the add_archive_element hook may have set a
2706 substitute BFD for us. */
2709 if (!info
->keep_memory
2710 && !aout_link_free_symbols (oldbfd
))
2712 if (!aout_get_external_symbols (abfd
))
2715 if (!aout_link_add_symbols (abfd
, info
))
2719 if (!info
->keep_memory
|| !needed
)
2721 if (!aout_link_free_symbols (abfd
))
2728 /* Add all symbols from an object file to the hash table. */
2731 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2733 bfd_boolean (*add_one_symbol
)
2734 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
2735 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
2736 struct bfd_link_hash_entry
**);
2737 struct external_nlist
*syms
;
2738 bfd_size_type sym_count
;
2741 struct aout_link_hash_entry
**sym_hash
;
2742 struct external_nlist
*p
;
2743 struct external_nlist
*pend
;
2745 syms
= obj_aout_external_syms (abfd
);
2746 sym_count
= obj_aout_external_sym_count (abfd
);
2747 strings
= obj_aout_external_strings (abfd
);
2748 if (info
->keep_memory
)
2753 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
2755 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
2756 (abfd
, info
, &syms
, &sym_count
, &strings
)))
2760 /* We keep a list of the linker hash table entries that correspond
2761 to particular symbols. We could just look them up in the hash
2762 table, but keeping the list is more efficient. Perhaps this
2763 should be conditional on info->keep_memory. */
2764 sym_hash
= bfd_alloc (abfd
,
2765 sym_count
* sizeof (struct aout_link_hash_entry
*));
2766 if (sym_hash
== NULL
&& sym_count
!= 0)
2768 obj_aout_sym_hashes (abfd
) = sym_hash
;
2770 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
2771 if (add_one_symbol
== NULL
)
2772 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
2775 pend
= p
+ sym_count
;
2776 for (; p
< pend
; p
++, sym_hash
++)
2787 type
= H_GET_8 (abfd
, p
->e_type
);
2789 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
2790 value
= GET_WORD (abfd
, p
->e_value
);
2796 /* Anything else should be a debugging symbol. */
2797 BFD_ASSERT ((type
& N_STAB
) != 0);
2807 /* Ignore symbols that are not externally visible. */
2810 case N_UNDF
| N_EXT
:
2813 section
= bfd_und_section_ptr
;
2817 section
= bfd_com_section_ptr
;
2820 section
= bfd_abs_section_ptr
;
2822 case N_TEXT
| N_EXT
:
2823 section
= obj_textsec (abfd
);
2824 value
-= bfd_get_section_vma (abfd
, section
);
2826 case N_DATA
| N_EXT
:
2827 /* Treat N_SETV symbols as N_DATA symbol; see comment in
2828 translate_from_native_sym_flags. */
2829 section
= obj_datasec (abfd
);
2830 value
-= bfd_get_section_vma (abfd
, section
);
2833 section
= obj_bsssec (abfd
);
2834 value
-= bfd_get_section_vma (abfd
, section
);
2838 if (! ((*add_one_symbol
)
2839 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
2840 (struct bfd_link_hash_entry
**) sym_hash
)))
2843 /* Restrict the maximum alignment of a common symbol based on
2844 the architecture, since a.out has no way to represent
2845 alignment requirements of a section in a .o file. FIXME:
2846 This isn't quite right: it should use the architecture of the
2847 output file, not the input files. */
2848 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
2849 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
2850 bfd_get_arch_info (abfd
)->section_align_power
))
2851 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
2852 bfd_get_arch_info (abfd
)->section_align_power
;
2854 /* If this is a set symbol, and we are not building sets, then
2855 it is possible for the hash entry to not have been set. In
2856 such a case, treat the symbol as not globally defined. */
2857 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
2859 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
2867 /* Look up an entry in an the header file hash table. */
2869 #define aout_link_includes_lookup(table, string, create, copy) \
2870 ((struct aout_link_includes_entry *) \
2871 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
2873 /* The function to create a new entry in the header file hash table. */
2875 static struct bfd_hash_entry
*
2876 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
2877 struct bfd_hash_table
*table
,
2880 struct aout_link_includes_entry
* ret
=
2881 (struct aout_link_includes_entry
*) entry
;
2883 /* Allocate the structure if it has not already been allocated by a
2886 ret
= bfd_hash_allocate (table
,
2887 sizeof (struct aout_link_includes_entry
));
2891 /* Call the allocation method of the superclass. */
2892 ret
= ((struct aout_link_includes_entry
*)
2893 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
2895 /* Set local fields. */
2898 return (struct bfd_hash_entry
*) ret
;
2902 aout_link_write_other_symbol (struct bfd_hash_entry
*bh
, void *data
)
2904 struct aout_link_hash_entry
*h
= (struct aout_link_hash_entry
*) bh
;
2905 struct aout_final_link_info
*flaginfo
= (struct aout_final_link_info
*) data
;
2909 struct external_nlist outsym
;
2913 if (h
->root
.type
== bfd_link_hash_warning
)
2915 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
2916 if (h
->root
.type
== bfd_link_hash_new
)
2920 output_bfd
= flaginfo
->output_bfd
;
2922 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
2924 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
2925 (output_bfd
, flaginfo
->info
, h
)))
2927 /* FIXME: No way to handle errors. */
2937 /* An indx of -2 means the symbol must be written. */
2939 && (flaginfo
->info
->strip
== strip_all
2940 || (flaginfo
->info
->strip
== strip_some
2941 && bfd_hash_lookup (flaginfo
->info
->keep_hash
, h
->root
.root
.string
,
2942 FALSE
, FALSE
) == NULL
)))
2945 switch (h
->root
.type
)
2949 /* Avoid variable not initialized warnings. */
2951 case bfd_link_hash_new
:
2952 /* This can happen for set symbols when sets are not being
2955 case bfd_link_hash_undefined
:
2956 type
= N_UNDF
| N_EXT
;
2959 case bfd_link_hash_defined
:
2960 case bfd_link_hash_defweak
:
2964 sec
= h
->root
.u
.def
.section
->output_section
;
2965 BFD_ASSERT (bfd_is_abs_section (sec
)
2966 || sec
->owner
== output_bfd
);
2967 if (sec
== obj_textsec (output_bfd
))
2968 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
2969 else if (sec
== obj_datasec (output_bfd
))
2970 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
2971 else if (sec
== obj_bsssec (output_bfd
))
2972 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
2974 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
2976 val
= (h
->root
.u
.def
.value
2978 + h
->root
.u
.def
.section
->output_offset
);
2981 case bfd_link_hash_common
:
2982 type
= N_UNDF
| N_EXT
;
2983 val
= h
->root
.u
.c
.size
;
2985 case bfd_link_hash_undefweak
:
2988 case bfd_link_hash_indirect
:
2989 case bfd_link_hash_warning
:
2990 /* FIXME: Ignore these for now. The circumstances under which
2991 they should be written out are not clear to me. */
2995 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
2996 indx
= add_to_stringtab (output_bfd
, flaginfo
->strtab
, h
->root
.root
.string
,
2998 if (indx
== (bfd_size_type
) -1)
2999 /* FIXME: No way to handle errors. */
3002 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3003 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3005 amt
= EXTERNAL_NLIST_SIZE
;
3006 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0
3007 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3008 /* FIXME: No way to handle errors. */
3011 flaginfo
->symoff
+= amt
;
3012 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3013 ++obj_aout_external_sym_count (output_bfd
);
3018 /* Handle a link order which is supposed to generate a reloc. */
3021 aout_link_reloc_link_order (struct aout_final_link_info
*flaginfo
,
3023 struct bfd_link_order
*p
)
3025 struct bfd_link_order_reloc
*pr
;
3028 reloc_howto_type
*howto
;
3029 file_ptr
*reloff_ptr
;
3030 struct reloc_std_external srel
;
3032 bfd_size_type rel_size
;
3036 if (p
->type
== bfd_section_reloc_link_order
)
3039 if (bfd_is_abs_section (pr
->u
.section
))
3040 r_index
= N_ABS
| N_EXT
;
3043 BFD_ASSERT (pr
->u
.section
->owner
== flaginfo
->output_bfd
);
3044 r_index
= pr
->u
.section
->target_index
;
3049 struct aout_link_hash_entry
*h
;
3051 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3053 h
= ((struct aout_link_hash_entry
*)
3054 bfd_wrapped_link_hash_lookup (flaginfo
->output_bfd
, flaginfo
->info
,
3055 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3061 /* We decided to strip this symbol, but it turns out that we
3062 can't. Note that we lose the other and desc information
3063 here. I don't think that will ever matter for a global
3067 if (!aout_link_write_other_symbol (&h
->root
.root
, flaginfo
))
3073 if (! ((*flaginfo
->info
->callbacks
->unattached_reloc
)
3074 (flaginfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0)))
3080 howto
= bfd_reloc_type_lookup (flaginfo
->output_bfd
, pr
->reloc
);
3083 bfd_set_error (bfd_error_bad_value
);
3087 if (o
== obj_textsec (flaginfo
->output_bfd
))
3088 reloff_ptr
= &flaginfo
->treloff
;
3089 else if (o
== obj_datasec (flaginfo
->output_bfd
))
3090 reloff_ptr
= &flaginfo
->dreloff
;
3095 MY_put_reloc(flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3105 fprintf (stderr
, "TODO: line %d in bfd/pdp11.c\n", __LINE__
);
3107 r_pcrel
= howto
->pc_relative
;
3108 r_baserel
= (howto
->type
& 8) != 0;
3109 r_jmptable
= (howto
->type
& 16) != 0;
3110 r_relative
= (howto
->type
& 32) != 0;
3111 r_length
= howto
->size
;
3113 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, srel
.r_address
);
3114 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3116 srel
.r_index
[0] = r_index
>> 16;
3117 srel
.r_index
[1] = r_index
>> 8;
3118 srel
.r_index
[2] = r_index
;
3120 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3121 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3122 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3123 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3124 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3125 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3129 srel
.r_index
[2] = r_index
>> 16;
3130 srel
.r_index
[1] = r_index
>> 8;
3131 srel
.r_index
[0] = r_index
;
3133 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3134 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3135 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3136 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3137 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3138 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3142 rel_ptr
= (void *) &srel
;
3144 /* We have to write the addend into the object file, since
3145 standard a.out relocs are in place. It would be more
3146 reliable if we had the current contents of the file here,
3147 rather than assuming zeroes, but we can't read the file since
3148 it was opened using bfd_openw. */
3149 if (pr
->addend
!= 0)
3152 bfd_reloc_status_type r
;
3156 size
= bfd_get_reloc_size (howto
);
3157 buf
= bfd_zmalloc (size
);
3158 if (buf
== NULL
&& size
!= 0)
3160 r
= MY_relocate_contents (howto
, flaginfo
->output_bfd
,
3167 case bfd_reloc_outofrange
:
3169 case bfd_reloc_overflow
:
3170 if (! ((*flaginfo
->info
->callbacks
->reloc_overflow
)
3171 (flaginfo
->info
, NULL
,
3172 (p
->type
== bfd_section_reloc_link_order
3173 ? bfd_section_name (flaginfo
->output_bfd
,
3176 howto
->name
, pr
->addend
, NULL
,
3177 (asection
*) NULL
, (bfd_vma
) 0)))
3184 ok
= bfd_set_section_contents (flaginfo
->output_bfd
, o
,
3186 (file_ptr
) p
->offset
,
3193 rel_size
= obj_reloc_entry_size (flaginfo
->output_bfd
);
3194 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3195 || bfd_bwrite (rel_ptr
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
3198 *reloff_ptr
+= rel_size
;
3200 /* Assert that the relocs have not run into the symbols, and that n
3201 the text relocs have not run into the data relocs. */
3202 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3203 && (reloff_ptr
!= &flaginfo
->treloff
3205 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3210 /* Get the section corresponding to a reloc index. */
3212 static inline asection
*
3213 aout_reloc_type_to_section (bfd
*abfd
, int type
)
3217 case RTEXT
: return obj_textsec (abfd
);
3218 case RDATA
: return obj_datasec (abfd
);
3219 case RBSS
: return obj_bsssec (abfd
);
3220 case RABS
: return bfd_abs_section_ptr
;
3221 case REXT
: return bfd_und_section_ptr
;
3227 pdp11_aout_link_input_section (struct aout_final_link_info
*flaginfo
,
3229 asection
*input_section
,
3231 bfd_size_type rel_size
,
3234 bfd_boolean (*check_dynamic_reloc
)
3235 (struct bfd_link_info
*, bfd
*, asection
*,
3236 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3239 bfd_boolean relocatable
;
3240 struct external_nlist
*syms
;
3242 struct aout_link_hash_entry
**sym_hashes
;
3247 output_bfd
= flaginfo
->output_bfd
;
3248 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
3250 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_SIZE
);
3251 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
3252 == output_bfd
->xvec
->header_byteorder
);
3254 relocatable
= flaginfo
->info
->relocatable
;
3255 syms
= obj_aout_external_syms (input_bfd
);
3256 strings
= obj_aout_external_strings (input_bfd
);
3257 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
3258 symbol_map
= flaginfo
->symbol_map
;
3261 rel_end
= rel
+ rel_size
;
3262 for (; rel
< rel_end
; rel
+= RELOC_SIZE
)
3269 reloc_howto_type
*howto
;
3270 struct aout_link_hash_entry
*h
= NULL
;
3272 bfd_reloc_status_type r
;
3275 reloc_entry
= GET_WORD (input_bfd
, (void *) rel
);
3276 if (reloc_entry
== 0)
3280 unsigned int howto_idx
;
3282 r_index
= (reloc_entry
& RIDXMASK
) >> 4;
3283 r_type
= reloc_entry
& RTYPE
;
3284 r_pcrel
= reloc_entry
& RELFLG
;
3285 r_addr
= (char *) rel
- (char *) relocs
;
3287 r_extern
= (r_type
== REXT
);
3289 howto_idx
= r_pcrel
;
3290 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_pdp11
));
3291 howto
= howto_table_pdp11
+ howto_idx
;
3296 /* We are generating a relocatable output file, and must
3297 modify the reloc accordingly. */
3300 /* If we know the symbol this relocation is against,
3301 convert it into a relocation against a section. This
3302 is what the native linker does. */
3303 h
= sym_hashes
[r_index
];
3305 && (h
->root
.type
== bfd_link_hash_defined
3306 || h
->root
.type
== bfd_link_hash_defweak
))
3308 asection
*output_section
;
3310 /* Compute a new r_index. */
3311 output_section
= h
->root
.u
.def
.section
->output_section
;
3312 if (output_section
== obj_textsec (output_bfd
))
3314 else if (output_section
== obj_datasec (output_bfd
))
3316 else if (output_section
== obj_bsssec (output_bfd
))
3321 /* Add the symbol value and the section VMA to the
3322 addend stored in the contents. */
3323 relocation
= (h
->root
.u
.def
.value
3324 + output_section
->vma
3325 + h
->root
.u
.def
.section
->output_offset
);
3329 /* We must change r_index according to the symbol
3331 r_index
= symbol_map
[r_index
];
3337 /* We decided to strip this symbol, but it
3338 turns out that we can't. Note that we
3339 lose the other and desc information here.
3340 I don't think that will ever matter for a
3346 if (!aout_link_write_other_symbol (&h
->root
.root
,
3356 name
= strings
+ GET_WORD (input_bfd
,
3357 syms
[r_index
].e_strx
);
3358 if (! ((*flaginfo
->info
->callbacks
->unattached_reloc
)
3359 (flaginfo
->info
, name
, input_bfd
, input_section
,
3369 /* Write out the new r_index value. */
3370 reloc_entry
= GET_WORD (input_bfd
, rel
);
3371 reloc_entry
&= RIDXMASK
;
3372 reloc_entry
|= r_index
<< 4;
3373 PUT_WORD (input_bfd
, reloc_entry
, rel
);
3379 /* This is a relocation against a section. We must
3380 adjust by the amount that the section moved. */
3381 section
= aout_reloc_type_to_section (input_bfd
, r_type
);
3382 relocation
= (section
->output_section
->vma
3383 + section
->output_offset
3387 /* Change the address of the relocation. */
3388 fprintf (stderr
, "TODO: change the address of the relocation\n");
3390 /* Adjust a PC relative relocation by removing the reference
3391 to the original address in the section and including the
3392 reference to the new address. */
3394 relocation
-= (input_section
->output_section
->vma
3395 + input_section
->output_offset
3396 - input_section
->vma
);
3398 #ifdef MY_relocatable_reloc
3399 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
3402 if (relocation
== 0)
3405 r
= MY_relocate_contents (howto
,
3406 input_bfd
, relocation
,
3413 /* We are generating an executable, and must do a full
3418 h
= sym_hashes
[r_index
];
3421 && (h
->root
.type
== bfd_link_hash_defined
3422 || h
->root
.type
== bfd_link_hash_defweak
))
3424 relocation
= (h
->root
.u
.def
.value
3425 + h
->root
.u
.def
.section
->output_section
->vma
3426 + h
->root
.u
.def
.section
->output_offset
);
3429 && h
->root
.type
== bfd_link_hash_undefweak
)
3441 section
= aout_reloc_type_to_section (input_bfd
, r_type
);
3442 relocation
= (section
->output_section
->vma
3443 + section
->output_offset
3446 relocation
+= input_section
->vma
;
3449 if (check_dynamic_reloc
!= NULL
)
3453 if (! ((*check_dynamic_reloc
)
3454 (flaginfo
->info
, input_bfd
, input_section
, h
,
3455 (void *) rel
, contents
, &skip
, &relocation
)))
3461 /* Now warn if a global symbol is undefined. We could not
3462 do this earlier, because check_dynamic_reloc might want
3463 to skip this reloc. */
3464 if (hundef
&& ! flaginfo
->info
->shared
)
3469 name
= h
->root
.root
.string
;
3471 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
3472 if (! ((*flaginfo
->info
->callbacks
->undefined_symbol
)
3473 (flaginfo
->info
, name
, input_bfd
, input_section
,
3478 r
= MY_final_link_relocate (howto
,
3479 input_bfd
, input_section
,
3480 contents
, r_addr
, relocation
,
3484 if (r
!= bfd_reloc_ok
)
3489 case bfd_reloc_outofrange
:
3491 case bfd_reloc_overflow
:
3498 name
= strings
+ GET_WORD (input_bfd
,
3499 syms
[r_index
].e_strx
);
3504 s
= aout_reloc_type_to_section (input_bfd
, r_type
);
3505 name
= bfd_section_name (input_bfd
, s
);
3507 if (! ((*flaginfo
->info
->callbacks
->reloc_overflow
)
3508 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
,
3509 howto
->name
, (bfd_vma
) 0, input_bfd
,
3510 input_section
, r_addr
)))
3521 /* Link an a.out section into the output file. */
3524 aout_link_input_section (struct aout_final_link_info
*flaginfo
,
3526 asection
*input_section
,
3527 file_ptr
*reloff_ptr
,
3528 bfd_size_type rel_size
)
3530 bfd_size_type input_size
;
3533 /* Get the section contents. */
3534 input_size
= input_section
->size
;
3535 if (! bfd_get_section_contents (input_bfd
, input_section
,
3536 (void *) flaginfo
->contents
,
3537 (file_ptr
) 0, input_size
))
3540 /* Read in the relocs if we haven't already done it. */
3541 if (aout_section_data (input_section
) != NULL
3542 && aout_section_data (input_section
)->relocs
!= NULL
)
3543 relocs
= aout_section_data (input_section
)->relocs
;
3546 relocs
= flaginfo
->relocs
;
3549 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
3550 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
3555 /* Relocate the section contents. */
3556 if (! pdp11_aout_link_input_section (flaginfo
, input_bfd
, input_section
,
3557 (bfd_byte
*) relocs
,
3558 rel_size
, flaginfo
->contents
))
3561 /* Write out the section contents. */
3562 if (! bfd_set_section_contents (flaginfo
->output_bfd
,
3563 input_section
->output_section
,
3564 (void *) flaginfo
->contents
,
3565 (file_ptr
) input_section
->output_offset
,
3569 /* If we are producing relocatable output, the relocs were
3570 modified, and we now write them out. */
3571 if (flaginfo
->info
->relocatable
&& rel_size
> 0)
3573 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
3575 if (bfd_bwrite (relocs
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
3577 *reloff_ptr
+= rel_size
;
3579 /* Assert that the relocs have not run into the symbols, and
3580 that if these are the text relocs they have not run into the
3582 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3583 && (reloff_ptr
!= &flaginfo
->treloff
3585 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3591 /* Link an a.out input BFD into the output file. */
3594 aout_link_input_bfd (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
3596 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
3598 /* If this is a dynamic object, it may need special handling. */
3599 if ((input_bfd
->flags
& DYNAMIC
) != 0
3600 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
3601 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
3602 (flaginfo
->info
, input_bfd
));
3604 /* Get the symbols. We probably have them already, unless
3605 flaginfo->info->keep_memory is FALSE. */
3606 if (! aout_get_external_symbols (input_bfd
))
3609 /* Write out the symbols and get a map of the new indices. The map
3610 is placed into flaginfo->symbol_map. */
3611 if (! aout_link_write_symbols (flaginfo
, input_bfd
))
3614 /* Relocate and write out the sections. These functions use the
3615 symbol map created by aout_link_write_symbols. The linker_mark
3616 field will be set if these sections are to be included in the
3617 link, which will normally be the case. */
3618 if (obj_textsec (input_bfd
)->linker_mark
)
3620 if (! aout_link_input_section (flaginfo
, input_bfd
,
3621 obj_textsec (input_bfd
),
3623 exec_hdr (input_bfd
)->a_trsize
))
3626 if (obj_datasec (input_bfd
)->linker_mark
)
3628 if (! aout_link_input_section (flaginfo
, input_bfd
,
3629 obj_datasec (input_bfd
),
3631 exec_hdr (input_bfd
)->a_drsize
))
3635 /* If we are not keeping memory, we don't need the symbols any
3636 longer. We still need them if we are keeping memory, because the
3637 strings in the hash table point into them. */
3638 if (! flaginfo
->info
->keep_memory
)
3640 if (! aout_link_free_symbols (input_bfd
))
3647 /* Do the final link step. This is called on the output BFD. The
3648 INFO structure should point to a list of BFDs linked through the
3649 link.next field which can be used to find each BFD which takes part
3650 in the output. Also, each section in ABFD should point to a list
3651 of bfd_link_order structures which list all the input sections for
3652 the output section. */
3655 NAME (aout
, final_link
) (bfd
*abfd
,
3656 struct bfd_link_info
*info
,
3657 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
3659 struct aout_final_link_info aout_info
;
3660 bfd_boolean includes_hash_initialized
= FALSE
;
3662 bfd_size_type trsize
, drsize
;
3663 bfd_size_type max_contents_size
;
3664 bfd_size_type max_relocs_size
;
3665 bfd_size_type max_sym_count
;
3666 bfd_size_type text_size
;
3668 struct bfd_link_order
*p
;
3670 bfd_boolean have_link_order_relocs
;
3673 abfd
->flags
|= DYNAMIC
;
3675 aout_info
.info
= info
;
3676 aout_info
.output_bfd
= abfd
;
3677 aout_info
.contents
= NULL
;
3678 aout_info
.relocs
= NULL
;
3679 aout_info
.symbol_map
= NULL
;
3680 aout_info
.output_syms
= NULL
;
3682 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
3683 aout_link_includes_newfunc
,
3684 sizeof (struct aout_link_includes_entry
),
3687 includes_hash_initialized
= TRUE
;
3689 /* Figure out the largest section size. Also, if generating
3690 relocatable output, count the relocs. */
3693 max_contents_size
= 0;
3694 max_relocs_size
= 0;
3696 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3700 if (info
->relocatable
)
3702 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
3704 trsize
+= exec_hdr (sub
)->a_trsize
;
3705 drsize
+= exec_hdr (sub
)->a_drsize
;
3709 /* FIXME: We need to identify the .text and .data sections
3710 and call get_reloc_upper_bound and canonicalize_reloc to
3711 work out the number of relocs needed, and then multiply
3712 by the reloc size. */
3713 (*_bfd_error_handler
)
3714 ("%s: relocatable link from %s to %s not supported",
3715 bfd_get_filename (abfd
),
3716 sub
->xvec
->name
, abfd
->xvec
->name
);
3717 bfd_set_error (bfd_error_invalid_operation
);
3722 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
3724 sz
= obj_textsec (sub
)->size
;
3725 if (sz
> max_contents_size
)
3726 max_contents_size
= sz
;
3727 sz
= obj_datasec (sub
)->size
;
3728 if (sz
> max_contents_size
)
3729 max_contents_size
= sz
;
3731 sz
= exec_hdr (sub
)->a_trsize
;
3732 if (sz
> max_relocs_size
)
3733 max_relocs_size
= sz
;
3734 sz
= exec_hdr (sub
)->a_drsize
;
3735 if (sz
> max_relocs_size
)
3736 max_relocs_size
= sz
;
3738 sz
= obj_aout_external_sym_count (sub
);
3739 if (sz
> max_sym_count
)
3744 if (info
->relocatable
)
3746 if (obj_textsec (abfd
) != NULL
)
3747 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
3748 ->map_head
.link_order
)
3749 * obj_reloc_entry_size (abfd
));
3750 if (obj_datasec (abfd
) != NULL
)
3751 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
3752 ->map_head
.link_order
)
3753 * obj_reloc_entry_size (abfd
));
3756 exec_hdr (abfd
)->a_trsize
= trsize
;
3757 exec_hdr (abfd
)->a_drsize
= drsize
;
3758 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
3760 /* Adjust the section sizes and vmas according to the magic number.
3761 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3762 filepos for each section. */
3763 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
3766 /* The relocation and symbol file positions differ among a.out
3767 targets. We are passed a callback routine from the backend
3768 specific code to handle this.
3769 FIXME: At this point we do not know how much space the symbol
3770 table will require. This will not work for any (nonstandard)
3771 a.out target that needs to know the symbol table size before it
3772 can compute the relocation file positions. This may or may not
3773 be the case for the hp300hpux target, for example. */
3774 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
3776 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
3777 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
3778 obj_sym_filepos (abfd
) = aout_info
.symoff
;
3780 /* We keep a count of the symbols as we output them. */
3781 obj_aout_external_sym_count (abfd
) = 0;
3783 /* We accumulate the string table as we write out the symbols. */
3784 aout_info
.strtab
= _bfd_stringtab_init ();
3785 if (aout_info
.strtab
== NULL
)
3788 /* Allocate buffers to hold section contents and relocs. */
3789 aout_info
.contents
= bfd_malloc (max_contents_size
);
3790 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
3791 aout_info
.symbol_map
= bfd_malloc (max_sym_count
* sizeof (int *));
3792 aout_info
.output_syms
= bfd_malloc ((max_sym_count
+ 1)
3793 * sizeof (struct external_nlist
));
3794 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
3795 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
3796 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
3797 || aout_info
.output_syms
== NULL
)
3800 /* If we have a symbol named __DYNAMIC, force it out now. This is
3801 required by SunOS. Doing this here rather than in sunos.c is a
3802 hack, but it's easier than exporting everything which would be
3805 struct aout_link_hash_entry
*h
;
3807 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
3808 FALSE
, FALSE
, FALSE
);
3810 aout_link_write_other_symbol (&h
->root
.root
, &aout_info
);
3813 /* The most time efficient way to do the link would be to read all
3814 the input object files into memory and then sort out the
3815 information into the output file. Unfortunately, that will
3816 probably use too much memory. Another method would be to step
3817 through everything that composes the text section and write it
3818 out, and then everything that composes the data section and write
3819 it out, and then write out the relocs, and then write out the
3820 symbols. Unfortunately, that requires reading stuff from each
3821 input file several times, and we will not be able to keep all the
3822 input files open simultaneously, and reopening them will be slow.
3824 What we do is basically process one input file at a time. We do
3825 everything we need to do with an input file once--copy over the
3826 section contents, handle the relocation information, and write
3827 out the symbols--and then we throw away the information we read
3828 from it. This approach requires a lot of lseeks of the output
3829 file, which is unfortunate but still faster than reopening a lot
3832 We use the output_has_begun field of the input BFDs to see
3833 whether we have already handled it. */
3834 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3835 sub
->output_has_begun
= FALSE
;
3837 /* Mark all sections which are to be included in the link. This
3838 will normally be every section. We need to do this so that we
3839 can identify any sections which the linker has decided to not
3841 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3843 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
3844 if (p
->type
== bfd_indirect_link_order
)
3845 p
->u
.indirect
.section
->linker_mark
= TRUE
;
3848 have_link_order_relocs
= FALSE
;
3849 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3851 for (p
= o
->map_head
.link_order
;
3855 if (p
->type
== bfd_indirect_link_order
3856 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
3857 == bfd_target_aout_flavour
))
3861 input_bfd
= p
->u
.indirect
.section
->owner
;
3862 if (! input_bfd
->output_has_begun
)
3864 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
3866 input_bfd
->output_has_begun
= TRUE
;
3869 else if (p
->type
== bfd_section_reloc_link_order
3870 || p
->type
== bfd_symbol_reloc_link_order
)
3871 /* These are handled below. */
3872 have_link_order_relocs
= TRUE
;
3875 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
3881 /* Write out any symbols that we have not already written out. */
3882 bfd_hash_traverse (&info
->hash
->table
,
3883 aout_link_write_other_symbol
,
3886 /* Now handle any relocs we were asked to create by the linker.
3887 These did not come from any input file. We must do these after
3888 we have written out all the symbols, so that we know the symbol
3890 if (have_link_order_relocs
)
3892 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3894 for (p
= o
->map_head
.link_order
;
3898 if (p
->type
== bfd_section_reloc_link_order
3899 || p
->type
== bfd_symbol_reloc_link_order
)
3901 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
3908 if (aout_info
.contents
!= NULL
)
3910 free (aout_info
.contents
);
3911 aout_info
.contents
= NULL
;
3913 if (aout_info
.relocs
!= NULL
)
3915 free (aout_info
.relocs
);
3916 aout_info
.relocs
= NULL
;
3918 if (aout_info
.symbol_map
!= NULL
)
3920 free (aout_info
.symbol_map
);
3921 aout_info
.symbol_map
= NULL
;
3923 if (aout_info
.output_syms
!= NULL
)
3925 free (aout_info
.output_syms
);
3926 aout_info
.output_syms
= NULL
;
3928 if (includes_hash_initialized
)
3930 bfd_hash_table_free (&aout_info
.includes
.root
);
3931 includes_hash_initialized
= FALSE
;
3934 /* Finish up any dynamic linking we may be doing. */
3935 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
3937 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
3941 /* Update the header information. */
3942 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
3943 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
3944 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
3945 obj_textsec (abfd
)->reloc_count
=
3946 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
3947 obj_datasec (abfd
)->reloc_count
=
3948 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
3950 /* Write out the string table, unless there are no symbols. */
3951 if (abfd
->symcount
> 0)
3953 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
3954 || ! emit_stringtab (abfd
, aout_info
.strtab
))
3957 else if (obj_textsec (abfd
)->reloc_count
== 0
3958 && obj_datasec (abfd
)->reloc_count
== 0)
3964 (file_ptr
) (obj_datasec (abfd
)->filepos
3965 + exec_hdr (abfd
)->a_data
3968 || bfd_bwrite (&b
, (bfd_size_type
) 1, abfd
) != 1)
3975 if (aout_info
.contents
!= NULL
)
3976 free (aout_info
.contents
);
3977 if (aout_info
.relocs
!= NULL
)
3978 free (aout_info
.relocs
);
3979 if (aout_info
.symbol_map
!= NULL
)
3980 free (aout_info
.symbol_map
);
3981 if (aout_info
.output_syms
!= NULL
)
3982 free (aout_info
.output_syms
);
3983 if (includes_hash_initialized
)
3984 bfd_hash_table_free (&aout_info
.includes
.root
);
3988 /* Adjust and write out the symbols for an a.out file. Set the new
3989 symbol indices into a symbol_map. */
3992 aout_link_write_symbols (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
3995 bfd_size_type sym_count
;
3997 enum bfd_link_strip strip
;
3998 enum bfd_link_discard discard
;
3999 struct external_nlist
*outsym
;
4000 bfd_size_type strtab_index
;
4001 struct external_nlist
*sym
;
4002 struct external_nlist
*sym_end
;
4003 struct aout_link_hash_entry
**sym_hash
;
4006 bfd_boolean skip_next
;
4008 output_bfd
= flaginfo
->output_bfd
;
4009 sym_count
= obj_aout_external_sym_count (input_bfd
);
4010 strings
= obj_aout_external_strings (input_bfd
);
4011 strip
= flaginfo
->info
->strip
;
4012 discard
= flaginfo
->info
->discard
;
4013 outsym
= flaginfo
->output_syms
;
4015 /* First write out a symbol for this object file, unless we are
4016 discarding such symbols. */
4017 if (strip
!= strip_all
4018 && (strip
!= strip_some
4019 || bfd_hash_lookup (flaginfo
->info
->keep_hash
, input_bfd
->filename
,
4020 FALSE
, FALSE
) != NULL
)
4021 && discard
!= discard_all
)
4023 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4024 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4025 input_bfd
->filename
, FALSE
);
4026 if (strtab_index
== (bfd_size_type
) -1)
4028 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4029 PUT_WORD (output_bfd
,
4030 (bfd_get_section_vma (output_bfd
,
4031 obj_textsec (input_bfd
)->output_section
)
4032 + obj_textsec (input_bfd
)->output_offset
),
4034 ++obj_aout_external_sym_count (output_bfd
);
4040 sym
= obj_aout_external_syms (input_bfd
);
4041 sym_end
= sym
+ sym_count
;
4042 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4043 symbol_map
= flaginfo
->symbol_map
;
4044 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4045 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4049 struct aout_link_hash_entry
*h
;
4055 /* We set *symbol_map to 0 above for all symbols. If it has
4056 already been set to -1 for this symbol, it means that we are
4057 discarding it because it appears in a duplicate header file.
4058 See the N_BINCL code below. */
4059 if (*symbol_map
== -1)
4062 /* Initialize *symbol_map to -1, which means that the symbol was
4063 not copied into the output file. We will change it later if
4064 we do copy the symbol over. */
4067 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4068 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4074 /* Pass this symbol through. It is the target of an
4075 indirect or warning symbol. */
4076 val
= GET_WORD (input_bfd
, sym
->e_value
);
4081 /* Skip this symbol, which is the target of an indirect
4082 symbol that we have changed to no longer be an indirect
4089 struct aout_link_hash_entry
*hresolve
;
4091 /* We have saved the hash table entry for this symbol, if
4092 there is one. Note that we could just look it up again
4093 in the hash table, provided we first check that it is an
4097 /* Use the name from the hash table, in case the symbol was
4100 name
= h
->root
.root
.string
;
4102 /* If this is an indirect or warning symbol, then change
4103 hresolve to the base symbol. We also change *sym_hash so
4104 that the relocation routines relocate against the real
4108 && (h
->root
.type
== bfd_link_hash_indirect
4109 || h
->root
.type
== bfd_link_hash_warning
))
4111 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4112 while (hresolve
->root
.type
== bfd_link_hash_indirect
4113 || hresolve
->root
.type
== bfd_link_hash_warning
)
4114 hresolve
= ((struct aout_link_hash_entry
*)
4115 hresolve
->root
.u
.i
.link
);
4116 *sym_hash
= hresolve
;
4119 /* If the symbol has already been written out, skip it. */
4121 && h
->root
.type
!= bfd_link_hash_warning
4124 if ((type
& N_TYPE
) == N_INDR
4125 || type
== N_WARNING
)
4127 *symbol_map
= h
->indx
;
4131 /* See if we are stripping this symbol. */
4137 case strip_debugger
:
4138 if ((type
& N_STAB
) != 0)
4142 if (bfd_hash_lookup (flaginfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4157 /* Get the value of the symbol. */
4158 if ((type
& N_TYPE
) == N_TEXT
4160 symsec
= obj_textsec (input_bfd
);
4161 else if ((type
& N_TYPE
) == N_DATA
4163 symsec
= obj_datasec (input_bfd
);
4164 else if ((type
& N_TYPE
) == N_BSS
4166 symsec
= obj_bsssec (input_bfd
);
4167 else if ((type
& N_TYPE
) == N_ABS
4169 symsec
= bfd_abs_section_ptr
;
4170 else if (((type
& N_TYPE
) == N_INDR
4171 && (hresolve
== NULL
4172 || (hresolve
->root
.type
!= bfd_link_hash_defined
4173 && hresolve
->root
.type
!= bfd_link_hash_defweak
4174 && hresolve
->root
.type
!= bfd_link_hash_common
)))
4175 || type
== N_WARNING
)
4177 /* Pass the next symbol through unchanged. The
4178 condition above for indirect symbols is so that if
4179 the indirect symbol was defined, we output it with
4180 the correct definition so the debugger will
4183 val
= GET_WORD (input_bfd
, sym
->e_value
);
4186 else if ((type
& N_STAB
) != 0)
4188 val
= GET_WORD (input_bfd
, sym
->e_value
);
4193 /* If we get here with an indirect symbol, it means that
4194 we are outputting it with a real definition. In such
4195 a case we do not want to output the next symbol,
4196 which is the target of the indirection. */
4197 if ((type
& N_TYPE
) == N_INDR
)
4202 /* We need to get the value from the hash table. We use
4203 hresolve so that if we have defined an indirect
4204 symbol we output the final definition. */
4207 switch (type
& N_TYPE
)
4210 symsec
= obj_textsec (input_bfd
);
4213 symsec
= obj_datasec (input_bfd
);
4216 symsec
= obj_bsssec (input_bfd
);
4219 symsec
= bfd_abs_section_ptr
;
4226 else if (hresolve
->root
.type
== bfd_link_hash_defined
4227 || hresolve
->root
.type
== bfd_link_hash_defweak
)
4229 asection
*input_section
;
4230 asection
*output_section
;
4232 /* This case usually means a common symbol which was
4233 turned into a defined symbol. */
4234 input_section
= hresolve
->root
.u
.def
.section
;
4235 output_section
= input_section
->output_section
;
4236 BFD_ASSERT (bfd_is_abs_section (output_section
)
4237 || output_section
->owner
== output_bfd
);
4238 val
= (hresolve
->root
.u
.def
.value
4239 + bfd_get_section_vma (output_bfd
, output_section
)
4240 + input_section
->output_offset
);
4242 /* Get the correct type based on the section. If
4243 this is a constructed set, force it to be
4244 globally visible. */
4253 if (output_section
== obj_textsec (output_bfd
))
4254 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4257 else if (output_section
== obj_datasec (output_bfd
))
4258 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4261 else if (output_section
== obj_bsssec (output_bfd
))
4262 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4266 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4270 else if (hresolve
->root
.type
== bfd_link_hash_common
)
4271 val
= hresolve
->root
.u
.c
.size
;
4272 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
4281 val
= (symsec
->output_section
->vma
4282 + symsec
->output_offset
4283 + (GET_WORD (input_bfd
, sym
->e_value
)
4286 /* If this is a global symbol set the written flag, and if
4287 it is a local symbol see if we should discard it. */
4291 h
->indx
= obj_aout_external_sym_count (output_bfd
);
4293 else if ((type
& N_TYPE
) != N_SETT
4294 && (type
& N_TYPE
) != N_SETD
4295 && (type
& N_TYPE
) != N_SETB
4296 && (type
& N_TYPE
) != N_SETA
)
4301 case discard_sec_merge
:
4304 if ((type
& N_STAB
) == 0
4305 && bfd_is_local_label_name (input_bfd
, name
))
4319 /* An N_BINCL symbol indicates the start of the stabs
4320 entries for a header file. We need to scan ahead to the
4321 next N_EINCL symbol, ignoring nesting, adding up all the
4322 characters in the symbol names, not including the file
4323 numbers in types (the first number after an open
4325 if (type
== N_BINCL
)
4327 struct external_nlist
*incl_sym
;
4329 struct aout_link_includes_entry
*incl_entry
;
4330 struct aout_link_includes_totals
*t
;
4334 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
4338 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
4339 if (incl_type
== N_EINCL
)
4345 else if (incl_type
== N_BINCL
)
4351 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
4352 for (; *s
!= '\0'; s
++)
4357 /* Skip the file number. */
4359 while (ISDIGIT (*s
))
4367 /* If we have already included a header file with the
4368 same value, then replace this one with an N_EXCL
4370 copy
= ! flaginfo
->info
->keep_memory
;
4371 incl_entry
= aout_link_includes_lookup (&flaginfo
->includes
,
4373 if (incl_entry
== NULL
)
4375 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
4376 if (t
->total
== val
)
4380 /* This is the first time we have seen this header
4381 file with this set of stabs strings. */
4382 t
= bfd_hash_allocate (&flaginfo
->includes
.root
,
4387 t
->next
= incl_entry
->totals
;
4388 incl_entry
->totals
= t
;
4394 /* This is a duplicate header file. We must change
4395 it to be an N_EXCL entry, and mark all the
4396 included symbols to prevent outputting them. */
4400 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
4402 incl_sym
++, incl_map
++)
4406 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
4407 if (incl_type
== N_EINCL
)
4416 else if (incl_type
== N_BINCL
)
4425 /* Copy this symbol into the list of symbols we are going to
4427 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
4429 if (! flaginfo
->info
->keep_memory
)
4431 /* name points into a string table which we are going to
4432 free. If there is a hash table entry, use that string.
4433 Otherwise, copy name into memory. */
4435 name
= h
->root
.root
.string
;
4439 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4441 if (strtab_index
== (bfd_size_type
) -1)
4443 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4444 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
4445 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
4446 ++obj_aout_external_sym_count (output_bfd
);
4450 /* Write out the output symbols we have just constructed. */
4451 if (outsym
> flaginfo
->output_syms
)
4455 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0)
4457 size
= outsym
- flaginfo
->output_syms
;
4458 size
*= EXTERNAL_NLIST_SIZE
;
4459 if (bfd_bwrite ((void *) flaginfo
->output_syms
, size
, output_bfd
) != size
)
4461 flaginfo
->symoff
+= size
;
4467 /* Write out a symbol that was not associated with an a.out input
4471 bfd_getp32 (const void *p
)
4473 const bfd_byte
*addr
= p
;
4476 v
= (unsigned long) addr
[1] << 24;
4477 v
|= (unsigned long) addr
[0] << 16;
4478 v
|= (unsigned long) addr
[3] << 8;
4479 v
|= (unsigned long) addr
[2];
4483 #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000)
4485 static bfd_signed_vma
4486 bfd_getp_signed_32 (const void *p
)
4488 const bfd_byte
*addr
= p
;
4491 v
= (unsigned long) addr
[1] << 24;
4492 v
|= (unsigned long) addr
[0] << 16;
4493 v
|= (unsigned long) addr
[3] << 8;
4494 v
|= (unsigned long) addr
[2];
4495 return COERCE32 (v
);
4499 bfd_putp32 (bfd_vma data
, void *p
)
4503 addr
[0] = (data
>> 16) & 0xff;
4504 addr
[1] = (data
>> 24) & 0xff;
4505 addr
[2] = (data
>> 0) & 0xff;
4506 addr
[3] = (data
>> 8) & 0xff;
4509 const bfd_target
MY (vec
) =
4511 TARGETNAME
, /* Name. */
4512 bfd_target_aout_flavour
,
4513 BFD_ENDIAN_LITTLE
, /* Target byte order (little). */
4514 BFD_ENDIAN_LITTLE
, /* Target headers byte order (little). */
4515 (HAS_RELOC
| EXEC_P
| /* Object flags. */
4516 HAS_LINENO
| HAS_DEBUG
|
4517 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
),
4518 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_CODE
| SEC_DATA
),
4519 MY_symbol_leading_char
,
4520 AR_PAD_CHAR
, /* AR_pad_char. */
4521 15, /* AR_max_namelen. */
4522 0, /* match priority. */
4523 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
4524 bfd_getp32
, bfd_getp_signed_32
, bfd_putp32
,
4525 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* Data. */
4526 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
4527 bfd_getp32
, bfd_getp_signed_32
, bfd_putp32
,
4528 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* Headers. */
4529 {_bfd_dummy_target
, MY_object_p
, /* bfd_check_format. */
4530 bfd_generic_archive_p
, MY_core_file_p
},
4531 {bfd_false
, MY_mkobject
, /* bfd_set_format. */
4532 _bfd_generic_mkarchive
, bfd_false
},
4533 {bfd_false
, MY_write_object_contents
, /* bfd_write_contents. */
4534 _bfd_write_archive_contents
, bfd_false
},
4536 BFD_JUMP_TABLE_GENERIC (MY
),
4537 BFD_JUMP_TABLE_COPY (MY
),
4538 BFD_JUMP_TABLE_CORE (MY
),
4539 BFD_JUMP_TABLE_ARCHIVE (MY
),
4540 BFD_JUMP_TABLE_SYMBOLS (MY
),
4541 BFD_JUMP_TABLE_RELOCS (MY
),
4542 BFD_JUMP_TABLE_WRITE (MY
),
4543 BFD_JUMP_TABLE_LINK (MY
),
4544 BFD_JUMP_TABLE_DYNAMIC (MY
),
4546 /* Alternative_target. */
4549 (void *) MY_backend_data