1 /* BFD back-end for PDP-11 a.out binaries.
2 Copyright (C) 2001-2014 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
;
1193 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
),
1194 exec_hdr (abfd
)->a_syms
,
1195 &obj_aout_sym_window (abfd
), TRUE
))
1197 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1199 /* We allocate using malloc to make the values easy to free
1200 later on. If we put them on the objalloc it might not be
1201 possible to free them. */
1202 syms
= bfd_malloc (count
* EXTERNAL_NLIST_SIZE
);
1203 if (syms
== NULL
&& count
!= 0)
1206 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1207 || (bfd_bread (syms
, exec_hdr (abfd
)->a_syms
, abfd
)
1208 != exec_hdr (abfd
)->a_syms
))
1215 obj_aout_external_syms (abfd
) = syms
;
1216 obj_aout_external_sym_count (abfd
) = count
;
1219 if (obj_aout_external_strings (abfd
) == NULL
1220 && exec_hdr (abfd
)->a_syms
!= 0)
1222 unsigned char string_chars
[BYTES_IN_LONG
];
1223 bfd_size_type stringsize
;
1226 /* Get the size of the strings. */
1227 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1228 || (bfd_bread ((void *) string_chars
, (bfd_size_type
) BYTES_IN_LONG
,
1229 abfd
) != BYTES_IN_LONG
))
1231 stringsize
= H_GET_32 (abfd
, string_chars
);
1234 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
,
1235 &obj_aout_string_window (abfd
), TRUE
))
1237 strings
= (char *) obj_aout_string_window (abfd
).data
;
1239 strings
= bfd_malloc (stringsize
+ 1);
1240 if (strings
== NULL
)
1243 /* Skip space for the string count in the buffer for convenience
1244 when using indexes. */
1245 if (bfd_bread (strings
+ 4, stringsize
- 4, abfd
) != stringsize
- 4)
1251 /* Ensure that a zero index yields an empty string. */
1254 strings
[stringsize
- 1] = 0;
1256 obj_aout_external_strings (abfd
) = strings
;
1257 obj_aout_external_string_size (abfd
) = stringsize
;
1263 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1264 and symbol->value fields of CACHE_PTR will be set from the a.out
1265 nlist structure. This function is responsible for setting
1266 symbol->flags and symbol->section, and adjusting symbol->value. */
1269 translate_from_native_sym_flags (bfd
*abfd
,
1270 aout_symbol_type
*cache_ptr
)
1274 if (cache_ptr
->type
== N_FN
)
1278 /* This is a debugging symbol. */
1279 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1281 /* Work out the symbol section. */
1282 switch (cache_ptr
->type
& N_TYPE
)
1286 sec
= obj_textsec (abfd
);
1289 sec
= obj_datasec (abfd
);
1292 sec
= obj_bsssec (abfd
);
1296 sec
= bfd_abs_section_ptr
;
1300 cache_ptr
->symbol
.section
= sec
;
1301 cache_ptr
->symbol
.value
-= sec
->vma
;
1306 /* Get the default visibility. This does not apply to all types, so
1307 we just hold it in a local variable to use if wanted. */
1308 if ((cache_ptr
->type
& N_EXT
) == 0)
1309 visible
= BSF_LOCAL
;
1311 visible
= BSF_GLOBAL
;
1313 switch (cache_ptr
->type
)
1316 case N_ABS
: case N_ABS
| N_EXT
:
1317 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1318 cache_ptr
->symbol
.flags
= visible
;
1321 case N_UNDF
| N_EXT
:
1322 if (cache_ptr
->symbol
.value
!= 0)
1324 /* This is a common symbol. */
1325 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1326 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1330 cache_ptr
->symbol
.flags
= 0;
1331 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1335 case N_TEXT
: case N_TEXT
| N_EXT
:
1336 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1337 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1338 cache_ptr
->symbol
.flags
= visible
;
1341 case N_DATA
: case N_DATA
| N_EXT
:
1342 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1343 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1344 cache_ptr
->symbol
.flags
= visible
;
1347 case N_BSS
: case N_BSS
| N_EXT
:
1348 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1349 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1350 cache_ptr
->symbol
.flags
= visible
;
1357 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1360 translate_to_native_sym_flags (bfd
*abfd
,
1362 struct external_nlist
*sym_pointer
)
1364 bfd_vma value
= cache_ptr
->value
;
1368 /* Mask out any existing type bits in case copying from one section
1370 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1372 sec
= bfd_get_section (cache_ptr
);
1377 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1379 (*_bfd_error_handler
)
1380 ("%B: can not represent section for symbol `%s' in a.out object file format",
1381 abfd
, cache_ptr
->name
!= NULL
? cache_ptr
->name
: "*unknown*");
1382 bfd_set_error (bfd_error_nonrepresentable_section
);
1386 if (sec
->output_section
!= NULL
)
1388 off
= sec
->output_offset
;
1389 sec
= sec
->output_section
;
1392 if (bfd_is_abs_section (sec
))
1393 sym_pointer
->e_type
[0] |= N_ABS
;
1394 else if (sec
== obj_textsec (abfd
))
1395 sym_pointer
->e_type
[0] |= N_TEXT
;
1396 else if (sec
== obj_datasec (abfd
))
1397 sym_pointer
->e_type
[0] |= N_DATA
;
1398 else if (sec
== obj_bsssec (abfd
))
1399 sym_pointer
->e_type
[0] |= N_BSS
;
1400 else if (bfd_is_und_section (sec
))
1401 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1402 else if (bfd_is_com_section (sec
))
1403 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1406 (*_bfd_error_handler
)
1407 ("%B: can not represent section `%A' in a.out object file format",
1409 bfd_set_error (bfd_error_nonrepresentable_section
);
1413 /* Turn the symbol from section relative to absolute again */
1414 value
+= sec
->vma
+ off
;
1416 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1417 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1418 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1419 sym_pointer
->e_type
[0] |= N_EXT
;
1421 PUT_WORD(abfd
, value
, sym_pointer
->e_value
);
1426 /* Native-level interface to symbols. */
1429 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1431 bfd_size_type amt
= sizeof (aout_symbol_type
);
1432 aout_symbol_type
*new_symbol_type
= bfd_zalloc (abfd
, amt
);
1434 if (!new_symbol_type
)
1436 new_symbol_type
->symbol
.the_bfd
= abfd
;
1438 return &new_symbol_type
->symbol
;
1441 /* Translate a set of internal symbols into external symbols. */
1444 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1445 aout_symbol_type
*in
,
1446 struct external_nlist
*ext
,
1447 bfd_size_type count
,
1449 bfd_size_type strsize
,
1450 bfd_boolean dynamic
)
1452 struct external_nlist
*ext_end
;
1454 ext_end
= ext
+ count
;
1455 for (; ext
< ext_end
; ext
++, in
++)
1459 x
= GET_WORD (abfd
, ext
->e_strx
);
1460 in
->symbol
.the_bfd
= abfd
;
1462 /* For the normal symbols, the zero index points at the number
1463 of bytes in the string table but is to be interpreted as the
1464 null string. For the dynamic symbols, the number of bytes in
1465 the string table is stored in the __DYNAMIC structure and the
1466 zero index points at an actual string. */
1467 if (x
== 0 && ! dynamic
)
1468 in
->symbol
.name
= "";
1469 else if (x
< strsize
)
1470 in
->symbol
.name
= str
+ x
;
1474 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1475 /* TODO: is 0 a safe value here? */
1478 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1479 in
->symbol
.udata
.p
= NULL
;
1481 if (! translate_from_native_sym_flags (abfd
, in
))
1485 in
->symbol
.flags
|= BSF_DYNAMIC
;
1491 /* We read the symbols into a buffer, which is discarded when this
1492 function exits. We read the strings into a buffer large enough to
1493 hold them all plus all the cached symbol entries. */
1496 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1498 struct external_nlist
*old_external_syms
;
1499 aout_symbol_type
*cached
;
1500 bfd_size_type cached_size
;
1502 /* If there's no work to be done, don't do any. */
1503 if (obj_aout_symbols (abfd
) != NULL
)
1506 old_external_syms
= obj_aout_external_syms (abfd
);
1508 if (! aout_get_external_symbols (abfd
))
1511 cached_size
= obj_aout_external_sym_count (abfd
);
1512 cached_size
*= sizeof (aout_symbol_type
);
1513 cached
= bfd_zmalloc (cached_size
);
1514 if (cached
== NULL
&& cached_size
!= 0)
1517 /* Convert from external symbol information to internal. */
1518 if (! (NAME (aout
, translate_symbol_table
)
1520 obj_aout_external_syms (abfd
),
1521 obj_aout_external_sym_count (abfd
),
1522 obj_aout_external_strings (abfd
),
1523 obj_aout_external_string_size (abfd
),
1530 bfd_get_symcount (abfd
) = obj_aout_external_sym_count (abfd
);
1532 obj_aout_symbols (abfd
) = cached
;
1534 /* It is very likely that anybody who calls this function will not
1535 want the external symbol information, so if it was allocated
1536 because of our call to aout_get_external_symbols, we free it up
1537 right away to save space. */
1538 if (old_external_syms
== NULL
1539 && obj_aout_external_syms (abfd
) != NULL
)
1542 bfd_free_window (&obj_aout_sym_window (abfd
));
1544 free (obj_aout_external_syms (abfd
));
1546 obj_aout_external_syms (abfd
) = NULL
;
1552 /* We use a hash table when writing out symbols so that we only write
1553 out a particular string once. This helps particularly when the
1554 linker writes out stabs debugging entries, because each different
1555 contributing object file tends to have many duplicate stabs
1558 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1559 if BFD_TRADITIONAL_FORMAT is set. */
1561 /* Get the index of a string in a strtab, adding it if it is not
1564 static INLINE bfd_size_type
1565 add_to_stringtab (bfd
*abfd
,
1566 struct bfd_strtab_hash
*tab
,
1571 bfd_size_type str_index
;
1573 /* An index of 0 always means the empty string. */
1574 if (str
== 0 || *str
== '\0')
1577 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1578 doesn't understand a hashed string table. */
1580 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1583 str_index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1585 if (str_index
!= (bfd_size_type
) -1)
1586 /* Add BYTES_IN_LONG to the return value to account for the
1587 space taken up by the string table size. */
1588 str_index
+= BYTES_IN_LONG
;
1593 /* Write out a strtab. ABFD is already at the right location in the
1597 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1599 bfd_byte buffer
[BYTES_IN_LONG
];
1601 /* The string table starts with the size. */
1602 H_PUT_32 (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_LONG
, buffer
);
1603 if (bfd_bwrite ((void *) buffer
, (bfd_size_type
) BYTES_IN_LONG
, abfd
)
1607 return _bfd_stringtab_emit (abfd
, tab
);
1611 NAME (aout
, write_syms
) (bfd
*abfd
)
1613 unsigned int count
;
1614 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1615 struct bfd_strtab_hash
*strtab
;
1617 strtab
= _bfd_stringtab_init ();
1621 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1623 asymbol
*g
= generic
[count
];
1625 struct external_nlist nsp
;
1627 PUT_WORD (abfd
, 0, nsp
.e_unused
);
1629 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1630 if (indx
== (bfd_size_type
) -1)
1632 PUT_WORD (abfd
, indx
, nsp
.e_strx
);
1634 if (bfd_asymbol_flavour(g
) == abfd
->xvec
->flavour
)
1635 H_PUT_8 (abfd
, aout_symbol(g
)->type
, nsp
.e_type
);
1637 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1639 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1642 H_PUT_8 (abfd
, 0, nsp
.e_ovly
);
1644 if (bfd_bwrite ((void *)&nsp
, (bfd_size_type
) EXTERNAL_NLIST_SIZE
, abfd
)
1645 != EXTERNAL_NLIST_SIZE
)
1648 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1649 here, at the end. */
1653 if (! emit_stringtab (abfd
, strtab
))
1656 _bfd_stringtab_free (strtab
);
1661 _bfd_stringtab_free (strtab
);
1667 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1669 unsigned int counter
= 0;
1670 aout_symbol_type
*symbase
;
1672 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1675 for (symbase
= obj_aout_symbols (abfd
); counter
++ < bfd_get_symcount (abfd
);)
1676 *(location
++) = (asymbol
*)(symbase
++);
1678 return bfd_get_symcount (abfd
);
1682 /* Output extended relocation information to a file in target byte order. */
1685 pdp11_aout_swap_reloc_out (bfd
*abfd
, arelent
*g
, bfd_byte
*natptr
)
1691 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1692 asection
*output_section
= sym
->section
->output_section
;
1695 fprintf (stderr
, "BFD: can't do this reloc addend stuff\n");
1697 r_pcrel
= g
->howto
->pc_relative
;
1699 if (bfd_is_abs_section (output_section
))
1701 else if (output_section
== obj_textsec (abfd
))
1703 else if (output_section
== obj_datasec (abfd
))
1705 else if (output_section
== obj_bsssec (abfd
))
1707 else if (bfd_is_und_section (output_section
))
1709 else if (bfd_is_com_section (output_section
))
1714 BFD_ASSERT (r_type
!= -1);
1719 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
1721 reloc_entry
= r_index
<< 4 | r_type
| r_pcrel
;
1723 PUT_WORD (abfd
, reloc_entry
, natptr
);
1726 /* BFD deals internally with all things based from the section they're
1727 in. so, something in 10 bytes into a text section with a base of
1728 50 would have a symbol (.text+10) and know .text vma was 50.
1730 Aout keeps all it's symbols based from zero, so the symbol would
1731 contain 60. This macro subs the base of each section from the value
1732 to give the true offset from the section */
1735 #define MOVE_ADDRESS(ad) \
1738 /* Undefined symbol. */ \
1739 cache_ptr->sym_ptr_ptr = symbols + r_index; \
1740 cache_ptr->addend = ad; \
1744 /* Defined, section relative. replace symbol with pointer to \
1745 symbol which points to section. */ \
1749 case N_TEXT | N_EXT: \
1750 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
1751 cache_ptr->addend = ad - su->textsec->vma; \
1754 case N_DATA | N_EXT: \
1755 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
1756 cache_ptr->addend = ad - su->datasec->vma; \
1759 case N_BSS | N_EXT: \
1760 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
1761 cache_ptr->addend = ad - su->bsssec->vma; \
1765 case N_ABS | N_EXT: \
1766 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
1767 cache_ptr->addend = ad; \
1773 pdp11_aout_swap_reloc_in (bfd
* abfd
,
1775 arelent
* cache_ptr
,
1776 bfd_size_type offset
,
1778 bfd_size_type symcount
)
1780 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
1781 unsigned int r_index
;
1786 reloc_entry
= GET_WORD (abfd
, (void *) bytes
);
1788 r_pcrel
= reloc_entry
& RELFLG
;
1790 cache_ptr
->address
= offset
;
1791 cache_ptr
->howto
= howto_table_pdp11
+ (r_pcrel
? 1 : 0);
1793 if ((reloc_entry
& RTYPE
) == RABS
)
1796 r_index
= RINDEX (reloc_entry
);
1798 /* r_extern reflects whether the symbol the reloc is against is
1800 r_extern
= (reloc_entry
& RTYPE
) == REXT
;
1802 if (r_extern
&& r_index
> symcount
)
1804 /* We could arrange to return an error, but it might be useful
1805 to see the file even if it is bad. */
1813 /* Read and swap the relocs for a section. */
1816 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
1819 bfd_size_type count
;
1820 bfd_size_type reloc_size
;
1822 arelent
*reloc_cache
;
1824 unsigned int counter
= 0;
1827 if (asect
->relocation
)
1830 if (asect
->flags
& SEC_CONSTRUCTOR
)
1833 if (asect
== obj_datasec (abfd
))
1834 reloc_size
= exec_hdr(abfd
)->a_drsize
;
1835 else if (asect
== obj_textsec (abfd
))
1836 reloc_size
= exec_hdr(abfd
)->a_trsize
;
1837 else if (asect
== obj_bsssec (abfd
))
1841 bfd_set_error (bfd_error_invalid_operation
);
1845 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
1848 each_size
= obj_reloc_entry_size (abfd
);
1850 relocs
= bfd_malloc (reloc_size
);
1851 if (relocs
== NULL
&& reloc_size
!= 0)
1854 if (bfd_bread (relocs
, reloc_size
, abfd
) != reloc_size
)
1860 count
= reloc_size
/ each_size
;
1862 /* Count the number of NON-ZERO relocs, this is the count we want. */
1864 unsigned int real_count
= 0;
1866 for (counter
= 0; counter
< count
; counter
++)
1870 x
= GET_WORD (abfd
, (char *) relocs
+ each_size
* counter
);
1878 reloc_cache
= bfd_zmalloc (count
* sizeof (arelent
));
1879 if (reloc_cache
== NULL
&& count
!= 0)
1882 cache_ptr
= reloc_cache
;
1887 counter
++, rptr
+= RELOC_SIZE
, cache_ptr
++)
1889 while (GET_WORD (abfd
, (void *) rptr
) == 0)
1892 if ((char *) rptr
>= (char *) relocs
+ reloc_size
)
1896 pdp11_aout_swap_reloc_in (abfd
, rptr
, cache_ptr
,
1897 (bfd_size_type
) ((char *) rptr
- (char *) relocs
),
1899 (bfd_size_type
) bfd_get_symcount (abfd
));
1902 /* Just in case, if rptr >= relocs + reloc_size should happen
1904 BFD_ASSERT (counter
== count
);
1908 asect
->relocation
= reloc_cache
;
1909 asect
->reloc_count
= cache_ptr
- reloc_cache
;
1914 /* Write out a relocation section into an object file. */
1917 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
1920 unsigned char *native
;
1921 unsigned int count
= section
->reloc_count
;
1922 bfd_size_type natsize
;
1924 natsize
= section
->size
;
1925 native
= bfd_zalloc (abfd
, natsize
);
1929 generic
= section
->orelocation
;
1930 if (generic
!= NULL
)
1936 r
= native
+ (*generic
)->address
;
1937 pdp11_aout_swap_reloc_out (abfd
, *generic
, r
);
1943 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
1945 bfd_release (abfd
, native
);
1949 bfd_release (abfd
, native
);
1953 /* This is stupid. This function should be a boolean predicate. */
1956 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
1961 arelent
*tblptr
= section
->relocation
;
1964 if (section
== obj_bsssec (abfd
))
1970 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
)(abfd
, section
, symbols
)))
1973 if (section
->flags
& SEC_CONSTRUCTOR
)
1975 arelent_chain
*chain
= section
->constructor_chain
;
1977 for (count
= 0; count
< section
->reloc_count
; count
++)
1979 *relptr
++ = &chain
->relent
;
1980 chain
= chain
->next
;
1985 tblptr
= section
->relocation
;
1987 for (count
= 0; count
++ < section
->reloc_count
;)
1988 *relptr
++ = tblptr
++;
1993 return section
->reloc_count
;
1997 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
1999 if (bfd_get_format (abfd
) != bfd_object
)
2001 bfd_set_error (bfd_error_invalid_operation
);
2005 if (asect
->flags
& SEC_CONSTRUCTOR
)
2006 return (sizeof (arelent
*) * (asect
->reloc_count
+ 1));
2008 if (asect
== obj_datasec (abfd
))
2009 return (sizeof (arelent
*)
2010 * ((exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
))
2013 if (asect
== obj_textsec (abfd
))
2014 return (sizeof (arelent
*)
2015 * ((exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
))
2018 /* TODO: why are there two if statements for obj_bsssec()? */
2020 if (asect
== obj_bsssec (abfd
))
2021 return sizeof (arelent
*);
2023 if (asect
== obj_bsssec (abfd
))
2026 bfd_set_error (bfd_error_invalid_operation
);
2032 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2034 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2037 return (bfd_get_symcount (abfd
) + 1) * (sizeof (aout_symbol_type
*));
2041 NAME (aout
, get_lineno
) (bfd
* abfd ATTRIBUTE_UNUSED
,
2042 asymbol
* symbol ATTRIBUTE_UNUSED
)
2048 NAME (aout
, get_symbol_info
) (bfd
* abfd ATTRIBUTE_UNUSED
,
2052 bfd_symbol_info (symbol
, ret
);
2054 if (ret
->type
== '?')
2056 int type_code
= aout_symbol(symbol
)->type
& 0xff;
2057 const char *stab_name
= bfd_get_stab_name (type_code
);
2058 static char buf
[10];
2060 if (stab_name
== NULL
)
2062 sprintf(buf
, "(%d)", type_code
);
2066 ret
->stab_type
= type_code
;
2067 ret
->stab_other
= (unsigned) (aout_symbol(symbol
)->other
& 0xff);
2068 ret
->stab_desc
= (unsigned) (aout_symbol(symbol
)->desc
& 0xffff);
2069 ret
->stab_name
= stab_name
;
2074 NAME (aout
, print_symbol
) (bfd
* abfd
,
2077 bfd_print_symbol_type how
)
2079 FILE *file
= (FILE *) afile
;
2083 case bfd_print_symbol_name
:
2085 fprintf(file
,"%s", symbol
->name
);
2087 case bfd_print_symbol_more
:
2088 fprintf(file
,"%4x %2x %2x",
2089 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2090 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2091 (unsigned) (aout_symbol (symbol
)->type
));
2093 case bfd_print_symbol_all
:
2095 const char *section_name
= symbol
->section
->name
;
2097 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
2099 fprintf (file
," %-5s %04x %02x %02x",
2101 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2102 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2103 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2105 fprintf(file
," %s", symbol
->name
);
2111 /* If we don't have to allocate more than 1MB to hold the generic
2112 symbols, we use the generic minisymbol method: it's faster, since
2113 it only translates the symbols once, not multiple times. */
2114 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2116 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2117 symbols. The minisymbol_to_symbol function translates these into
2118 BFD asymbol structures. */
2121 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2122 bfd_boolean dynamic
,
2124 unsigned int *sizep
)
2127 /* We could handle the dynamic symbols here as well, but it's
2128 easier to hand them off. */
2129 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2131 if (! aout_get_external_symbols (abfd
))
2134 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2135 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2137 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2139 /* By passing the external symbols back from this routine, we are
2140 giving up control over the memory block. Clear
2141 obj_aout_external_syms, so that we do not try to free it
2143 obj_aout_external_syms (abfd
) = NULL
;
2145 *sizep
= EXTERNAL_NLIST_SIZE
;
2146 return obj_aout_external_sym_count (abfd
);
2149 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2150 unmodified a.out symbol. The SYM argument is a structure returned
2151 by bfd_make_empty_symbol, which we fill in here. */
2154 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2155 bfd_boolean dynamic
,
2156 const void * minisym
,
2160 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2161 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2163 memset (sym
, 0, sizeof (aout_symbol_type
));
2165 /* We call translate_symbol_table to translate a single symbol. */
2166 if (! (NAME (aout
, translate_symbol_table
)
2168 (aout_symbol_type
*) sym
,
2169 (struct external_nlist
*) minisym
,
2171 obj_aout_external_strings (abfd
),
2172 obj_aout_external_string_size (abfd
),
2179 /* Provided a BFD, a section and an offset into the section, calculate
2180 and return the name of the source file and the line nearest to the
2184 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2188 const char **filename_ptr
,
2189 const char **functionname_ptr
,
2190 unsigned int *line_ptr
)
2192 /* Run down the file looking for the filename, function and linenumber. */
2194 const char *directory_name
= NULL
;
2195 const char *main_file_name
= NULL
;
2196 const char *current_file_name
= NULL
;
2197 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2198 bfd_vma low_line_vma
= 0;
2199 bfd_vma low_func_vma
= 0;
2201 size_t filelen
, funclen
;
2204 *filename_ptr
= abfd
->filename
;
2205 *functionname_ptr
= 0;
2208 if (symbols
!= NULL
)
2210 for (p
= symbols
; *p
; p
++)
2212 aout_symbol_type
*q
= (aout_symbol_type
*)(*p
);
2217 /* If this looks like a file name symbol, and it comes after
2218 the line number we have found so far, but before the
2219 offset, then we have probably not found the right line
2221 if (q
->symbol
.value
<= offset
2222 && ((q
->symbol
.value
> low_line_vma
2223 && (line_file_name
!= NULL
2225 || (q
->symbol
.value
> low_func_vma
2228 const char * symname
;
2230 symname
= q
->symbol
.name
;
2231 if (strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2233 if (q
->symbol
.value
> low_line_vma
)
2236 line_file_name
= NULL
;
2238 if (q
->symbol
.value
> low_func_vma
)
2245 /* If this symbol is less than the offset, but greater than
2246 the line number we have found so far, then we have not
2247 found the right line number. */
2248 if (q
->symbol
.value
<= offset
)
2250 if (q
->symbol
.value
> low_line_vma
)
2253 line_file_name
= NULL
;
2255 if (q
->symbol
.value
> low_func_vma
)
2259 main_file_name
= current_file_name
= q
->symbol
.name
;
2260 /* Look ahead to next symbol to check if that too is an N_SO. */
2264 q
= (aout_symbol_type
*)(*p
);
2265 if (q
->type
!= (int) N_SO
)
2268 /* Found a second N_SO First is directory; second is filename. */
2269 directory_name
= current_file_name
;
2270 main_file_name
= current_file_name
= q
->symbol
.name
;
2271 if (obj_textsec(abfd
) != section
)
2275 current_file_name
= q
->symbol
.name
;
2281 /* We'll keep this if it resolves nearer than the one we have
2283 if (q
->symbol
.value
>= low_line_vma
2284 && q
->symbol
.value
<= offset
)
2286 *line_ptr
= q
->desc
;
2287 low_line_vma
= q
->symbol
.value
;
2288 line_file_name
= current_file_name
;
2294 /* We'll keep this if it is nearer than the one we have already. */
2295 if (q
->symbol
.value
>= low_func_vma
&&
2296 q
->symbol
.value
<= offset
)
2298 low_func_vma
= q
->symbol
.value
;
2299 func
= (asymbol
*) q
;
2301 else if (q
->symbol
.value
> offset
)
2311 main_file_name
= line_file_name
;
2313 if (main_file_name
== NULL
2314 || main_file_name
[0] == '/'
2315 || directory_name
== NULL
)
2318 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2322 funclen
= strlen (bfd_asymbol_name (func
));
2324 if (adata (abfd
).line_buf
!= NULL
)
2325 free (adata (abfd
).line_buf
);
2326 if (filelen
+ funclen
== 0)
2327 adata (abfd
).line_buf
= buf
= NULL
;
2330 buf
= bfd_malloc ((bfd_size_type
) filelen
+ funclen
+ 3);
2331 adata (abfd
).line_buf
= buf
;
2336 if (main_file_name
!= NULL
)
2338 if (main_file_name
[0] == '/' || directory_name
== NULL
)
2339 *filename_ptr
= main_file_name
;
2342 sprintf (buf
, "%s%s", directory_name
, main_file_name
);
2343 *filename_ptr
= buf
;
2350 const char *function
= func
->name
;
2353 /* The caller expects a symbol name. We actually have a
2354 function name, without the leading underscore. Put the
2355 underscore back in, so that the caller gets a symbol name. */
2356 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2357 strcpy (buf
, function
);
2360 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2361 strcpy (buf
+ 1, function
);
2364 /* Have to remove : stuff. */
2365 colon
= strchr (buf
, ':');
2368 *functionname_ptr
= buf
;
2375 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2376 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2378 return adata (abfd
).exec_bytes_size
;
2381 /* Free all information we have cached for this BFD. We can always
2382 read it again later if we need it. */
2385 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2389 if (bfd_get_format (abfd
) != bfd_object
)
2392 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2393 BFCI_FREE (obj_aout_symbols (abfd
));
2396 obj_aout_external_syms (abfd
) = 0;
2397 bfd_free_window (&obj_aout_sym_window (abfd
));
2398 bfd_free_window (&obj_aout_string_window (abfd
));
2399 obj_aout_external_strings (abfd
) = 0;
2401 BFCI_FREE (obj_aout_external_syms (abfd
));
2402 BFCI_FREE (obj_aout_external_strings (abfd
));
2404 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2405 BFCI_FREE (o
->relocation
);
2411 /* Routine to create an entry in an a.out link hash table. */
2413 struct bfd_hash_entry
*
2414 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2415 struct bfd_hash_table
*table
,
2418 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2420 /* Allocate the structure if it has not already been allocated by a
2423 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
2427 /* Call the allocation method of the superclass. */
2428 ret
= (struct aout_link_hash_entry
*)
2429 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
);
2432 /* Set local fields. */
2433 ret
->written
= FALSE
;
2437 return (struct bfd_hash_entry
*) ret
;
2440 /* Initialize an a.out link hash table. */
2443 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2445 struct bfd_hash_entry
*(*newfunc
) (struct bfd_hash_entry
*,
2446 struct bfd_hash_table
*,
2448 unsigned int entsize
)
2450 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2453 /* Create an a.out link hash table. */
2455 struct bfd_link_hash_table
*
2456 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2458 struct aout_link_hash_table
*ret
;
2459 bfd_size_type amt
= sizeof (struct aout_link_hash_table
);
2461 ret
= bfd_malloc (amt
);
2464 if (! NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2465 NAME (aout
, link_hash_newfunc
),
2466 sizeof (struct aout_link_hash_entry
)))
2474 /* Free up the internal symbols read from an a.out file. */
2477 aout_link_free_symbols (bfd
*abfd
)
2479 if (obj_aout_external_syms (abfd
) != NULL
)
2482 bfd_free_window (&obj_aout_sym_window (abfd
));
2484 free ((void *) obj_aout_external_syms (abfd
));
2486 obj_aout_external_syms (abfd
) = NULL
;
2489 if (obj_aout_external_strings (abfd
) != NULL
)
2492 bfd_free_window (&obj_aout_string_window (abfd
));
2494 free ((void *) obj_aout_external_strings (abfd
));
2496 obj_aout_external_strings (abfd
) = NULL
;
2501 /* Given an a.out BFD, add symbols to the global hash table as
2505 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
2507 switch (bfd_get_format (abfd
))
2510 return aout_link_add_object_symbols (abfd
, info
);
2512 return _bfd_generic_link_add_archive_symbols
2513 (abfd
, info
, aout_link_check_archive_element
);
2515 bfd_set_error (bfd_error_wrong_format
);
2520 /* Add symbols from an a.out object file. */
2523 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2525 if (! aout_get_external_symbols (abfd
))
2527 if (! aout_link_add_symbols (abfd
, info
))
2529 if (! info
->keep_memory
)
2531 if (! aout_link_free_symbols (abfd
))
2537 /* Look through the internal symbols to see if this object file should
2538 be included in the link. We should include this object file if it
2539 defines any symbols which are currently undefined. If this object
2540 file defines a common symbol, then we may adjust the size of the
2541 known symbol but we do not include the object file in the link
2542 (unless there is some other reason to include it). */
2545 aout_link_check_ar_symbols (bfd
*abfd
,
2546 struct bfd_link_info
*info
,
2547 bfd_boolean
*pneeded
,
2550 struct external_nlist
*p
;
2551 struct external_nlist
*pend
;
2556 /* Look through all the symbols. */
2557 p
= obj_aout_external_syms (abfd
);
2558 pend
= p
+ obj_aout_external_sym_count (abfd
);
2559 strings
= obj_aout_external_strings (abfd
);
2560 for (; p
< pend
; p
++)
2562 int type
= H_GET_8 (abfd
, p
->e_type
);
2564 struct bfd_link_hash_entry
*h
;
2566 /* Ignore symbols that are not externally visible. This is an
2567 optimization only, as we check the type more thoroughly
2569 if ((type
& N_EXT
) == 0
2573 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
2574 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2576 /* We are only interested in symbols that are currently
2577 undefined or common. */
2579 || (h
->type
!= bfd_link_hash_undefined
2580 && h
->type
!= bfd_link_hash_common
))
2583 if (type
== (N_TEXT
| N_EXT
)
2584 || type
== (N_DATA
| N_EXT
)
2585 || type
== (N_BSS
| N_EXT
)
2586 || type
== (N_ABS
| N_EXT
))
2588 /* This object file defines this symbol. We must link it
2589 in. This is true regardless of whether the current
2590 definition of the symbol is undefined or common. If the
2591 current definition is common, we have a case in which we
2592 have already seen an object file including
2594 and this object file from the archive includes
2596 In such a case we must include this object file.
2598 FIXME: The SunOS 4.1.3 linker will pull in the archive
2599 element if the symbol is defined in the .data section,
2600 but not if it is defined in the .text section. That
2601 seems a bit crazy to me, and I haven't implemented it.
2602 However, it might be correct. */
2603 if (!(*info
->callbacks
2604 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2610 if (type
== (N_UNDF
| N_EXT
))
2614 value
= GET_WORD (abfd
, p
->e_value
);
2617 /* This symbol is common in the object from the archive
2619 if (h
->type
== bfd_link_hash_undefined
)
2624 symbfd
= h
->u
.undef
.abfd
;
2627 /* This symbol was created as undefined from
2628 outside BFD. We assume that we should link
2629 in the object file. This is done for the -u
2630 option in the linker. */
2631 if (!(*info
->callbacks
2632 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2637 /* Turn the current link symbol into a common
2638 symbol. It is already on the undefs list. */
2639 h
->type
= bfd_link_hash_common
;
2640 h
->u
.c
.p
= bfd_hash_allocate (&info
->hash
->table
,
2641 sizeof (struct bfd_link_hash_common_entry
));
2642 if (h
->u
.c
.p
== NULL
)
2645 h
->u
.c
.size
= value
;
2647 /* FIXME: This isn't quite right. The maximum
2648 alignment of a common symbol should be set by the
2649 architecture of the output file, not of the input
2651 power
= bfd_log2 (value
);
2652 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
2653 power
= bfd_get_arch_info (abfd
)->section_align_power
;
2654 h
->u
.c
.p
->alignment_power
= power
;
2656 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
2661 /* Adjust the size of the common symbol if
2663 if (value
> h
->u
.c
.size
)
2664 h
->u
.c
.size
= value
;
2670 /* We do not need this object file. */
2674 /* Check a single archive element to see if we need to include it in
2675 the link. *PNEEDED is set according to whether this element is
2676 needed in the link or not. This is called from
2677 _bfd_generic_link_add_archive_symbols. */
2680 aout_link_check_archive_element (bfd
*abfd
,
2681 struct bfd_link_info
*info
,
2682 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
2683 const char *name ATTRIBUTE_UNUSED
,
2684 bfd_boolean
*pneeded
)
2689 if (!aout_get_external_symbols (abfd
))
2693 if (!aout_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
2699 /* Potentially, the add_archive_element hook may have set a
2700 substitute BFD for us. */
2703 if (!info
->keep_memory
2704 && !aout_link_free_symbols (oldbfd
))
2706 if (!aout_get_external_symbols (abfd
))
2709 if (!aout_link_add_symbols (abfd
, info
))
2713 if (!info
->keep_memory
|| !needed
)
2715 if (!aout_link_free_symbols (abfd
))
2722 /* Add all symbols from an object file to the hash table. */
2725 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2727 bfd_boolean (*add_one_symbol
)
2728 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
2729 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
2730 struct bfd_link_hash_entry
**);
2731 struct external_nlist
*syms
;
2732 bfd_size_type sym_count
;
2735 struct aout_link_hash_entry
**sym_hash
;
2736 struct external_nlist
*p
;
2737 struct external_nlist
*pend
;
2739 syms
= obj_aout_external_syms (abfd
);
2740 sym_count
= obj_aout_external_sym_count (abfd
);
2741 strings
= obj_aout_external_strings (abfd
);
2742 if (info
->keep_memory
)
2747 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
2749 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
2750 (abfd
, info
, &syms
, &sym_count
, &strings
)))
2754 /* We keep a list of the linker hash table entries that correspond
2755 to particular symbols. We could just look them up in the hash
2756 table, but keeping the list is more efficient. Perhaps this
2757 should be conditional on info->keep_memory. */
2758 sym_hash
= bfd_alloc (abfd
,
2759 sym_count
* sizeof (struct aout_link_hash_entry
*));
2760 if (sym_hash
== NULL
&& sym_count
!= 0)
2762 obj_aout_sym_hashes (abfd
) = sym_hash
;
2764 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
2765 if (add_one_symbol
== NULL
)
2766 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
2769 pend
= p
+ sym_count
;
2770 for (; p
< pend
; p
++, sym_hash
++)
2781 type
= H_GET_8 (abfd
, p
->e_type
);
2783 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
2784 value
= GET_WORD (abfd
, p
->e_value
);
2790 /* Anything else should be a debugging symbol. */
2791 BFD_ASSERT ((type
& N_STAB
) != 0);
2801 /* Ignore symbols that are not externally visible. */
2804 case N_UNDF
| N_EXT
:
2807 section
= bfd_und_section_ptr
;
2811 section
= bfd_com_section_ptr
;
2814 section
= bfd_abs_section_ptr
;
2816 case N_TEXT
| N_EXT
:
2817 section
= obj_textsec (abfd
);
2818 value
-= bfd_get_section_vma (abfd
, section
);
2820 case N_DATA
| N_EXT
:
2821 /* Treat N_SETV symbols as N_DATA symbol; see comment in
2822 translate_from_native_sym_flags. */
2823 section
= obj_datasec (abfd
);
2824 value
-= bfd_get_section_vma (abfd
, section
);
2827 section
= obj_bsssec (abfd
);
2828 value
-= bfd_get_section_vma (abfd
, section
);
2832 if (! ((*add_one_symbol
)
2833 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
2834 (struct bfd_link_hash_entry
**) sym_hash
)))
2837 /* Restrict the maximum alignment of a common symbol based on
2838 the architecture, since a.out has no way to represent
2839 alignment requirements of a section in a .o file. FIXME:
2840 This isn't quite right: it should use the architecture of the
2841 output file, not the input files. */
2842 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
2843 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
2844 bfd_get_arch_info (abfd
)->section_align_power
))
2845 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
2846 bfd_get_arch_info (abfd
)->section_align_power
;
2848 /* If this is a set symbol, and we are not building sets, then
2849 it is possible for the hash entry to not have been set. In
2850 such a case, treat the symbol as not globally defined. */
2851 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
2853 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
2861 /* Look up an entry in an the header file hash table. */
2863 #define aout_link_includes_lookup(table, string, create, copy) \
2864 ((struct aout_link_includes_entry *) \
2865 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
2867 /* The function to create a new entry in the header file hash table. */
2869 static struct bfd_hash_entry
*
2870 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
2871 struct bfd_hash_table
*table
,
2874 struct aout_link_includes_entry
* ret
=
2875 (struct aout_link_includes_entry
*) entry
;
2877 /* Allocate the structure if it has not already been allocated by a
2880 ret
= bfd_hash_allocate (table
,
2881 sizeof (struct aout_link_includes_entry
));
2885 /* Call the allocation method of the superclass. */
2886 ret
= ((struct aout_link_includes_entry
*)
2887 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
2889 /* Set local fields. */
2892 return (struct bfd_hash_entry
*) ret
;
2896 aout_link_write_other_symbol (struct bfd_hash_entry
*bh
, void *data
)
2898 struct aout_link_hash_entry
*h
= (struct aout_link_hash_entry
*) bh
;
2899 struct aout_final_link_info
*flaginfo
= (struct aout_final_link_info
*) data
;
2903 struct external_nlist outsym
;
2907 if (h
->root
.type
== bfd_link_hash_warning
)
2909 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
2910 if (h
->root
.type
== bfd_link_hash_new
)
2914 output_bfd
= flaginfo
->output_bfd
;
2916 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
2918 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
2919 (output_bfd
, flaginfo
->info
, h
)))
2921 /* FIXME: No way to handle errors. */
2931 /* An indx of -2 means the symbol must be written. */
2933 && (flaginfo
->info
->strip
== strip_all
2934 || (flaginfo
->info
->strip
== strip_some
2935 && bfd_hash_lookup (flaginfo
->info
->keep_hash
, h
->root
.root
.string
,
2936 FALSE
, FALSE
) == NULL
)))
2939 switch (h
->root
.type
)
2943 /* Avoid variable not initialized warnings. */
2945 case bfd_link_hash_new
:
2946 /* This can happen for set symbols when sets are not being
2949 case bfd_link_hash_undefined
:
2950 type
= N_UNDF
| N_EXT
;
2953 case bfd_link_hash_defined
:
2954 case bfd_link_hash_defweak
:
2958 sec
= h
->root
.u
.def
.section
->output_section
;
2959 BFD_ASSERT (bfd_is_abs_section (sec
)
2960 || sec
->owner
== output_bfd
);
2961 if (sec
== obj_textsec (output_bfd
))
2962 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
2963 else if (sec
== obj_datasec (output_bfd
))
2964 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
2965 else if (sec
== obj_bsssec (output_bfd
))
2966 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
2968 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
2970 val
= (h
->root
.u
.def
.value
2972 + h
->root
.u
.def
.section
->output_offset
);
2975 case bfd_link_hash_common
:
2976 type
= N_UNDF
| N_EXT
;
2977 val
= h
->root
.u
.c
.size
;
2979 case bfd_link_hash_undefweak
:
2982 case bfd_link_hash_indirect
:
2983 case bfd_link_hash_warning
:
2984 /* FIXME: Ignore these for now. The circumstances under which
2985 they should be written out are not clear to me. */
2989 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
2990 indx
= add_to_stringtab (output_bfd
, flaginfo
->strtab
, h
->root
.root
.string
,
2992 if (indx
== (bfd_size_type
) -1)
2993 /* FIXME: No way to handle errors. */
2996 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
2997 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
2999 amt
= EXTERNAL_NLIST_SIZE
;
3000 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0
3001 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3002 /* FIXME: No way to handle errors. */
3005 flaginfo
->symoff
+= amt
;
3006 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3007 ++obj_aout_external_sym_count (output_bfd
);
3012 /* Handle a link order which is supposed to generate a reloc. */
3015 aout_link_reloc_link_order (struct aout_final_link_info
*flaginfo
,
3017 struct bfd_link_order
*p
)
3019 struct bfd_link_order_reloc
*pr
;
3022 reloc_howto_type
*howto
;
3023 file_ptr
*reloff_ptr
;
3024 struct reloc_std_external srel
;
3026 bfd_size_type rel_size
;
3030 if (p
->type
== bfd_section_reloc_link_order
)
3033 if (bfd_is_abs_section (pr
->u
.section
))
3034 r_index
= N_ABS
| N_EXT
;
3037 BFD_ASSERT (pr
->u
.section
->owner
== flaginfo
->output_bfd
);
3038 r_index
= pr
->u
.section
->target_index
;
3043 struct aout_link_hash_entry
*h
;
3045 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3047 h
= ((struct aout_link_hash_entry
*)
3048 bfd_wrapped_link_hash_lookup (flaginfo
->output_bfd
, flaginfo
->info
,
3049 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3055 /* We decided to strip this symbol, but it turns out that we
3056 can't. Note that we lose the other and desc information
3057 here. I don't think that will ever matter for a global
3061 if (!aout_link_write_other_symbol (&h
->root
.root
, flaginfo
))
3067 if (! ((*flaginfo
->info
->callbacks
->unattached_reloc
)
3068 (flaginfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0)))
3074 howto
= bfd_reloc_type_lookup (flaginfo
->output_bfd
, pr
->reloc
);
3077 bfd_set_error (bfd_error_bad_value
);
3081 if (o
== obj_textsec (flaginfo
->output_bfd
))
3082 reloff_ptr
= &flaginfo
->treloff
;
3083 else if (o
== obj_datasec (flaginfo
->output_bfd
))
3084 reloff_ptr
= &flaginfo
->dreloff
;
3089 MY_put_reloc(flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3099 fprintf (stderr
, "TODO: line %d in bfd/pdp11.c\n", __LINE__
);
3101 r_pcrel
= howto
->pc_relative
;
3102 r_baserel
= (howto
->type
& 8) != 0;
3103 r_jmptable
= (howto
->type
& 16) != 0;
3104 r_relative
= (howto
->type
& 32) != 0;
3105 r_length
= howto
->size
;
3107 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, srel
.r_address
);
3108 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3110 srel
.r_index
[0] = r_index
>> 16;
3111 srel
.r_index
[1] = r_index
>> 8;
3112 srel
.r_index
[2] = r_index
;
3114 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3115 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3116 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3117 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3118 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3119 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3123 srel
.r_index
[2] = r_index
>> 16;
3124 srel
.r_index
[1] = r_index
>> 8;
3125 srel
.r_index
[0] = r_index
;
3127 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3128 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3129 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3130 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3131 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3132 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3136 rel_ptr
= (void *) &srel
;
3138 /* We have to write the addend into the object file, since
3139 standard a.out relocs are in place. It would be more
3140 reliable if we had the current contents of the file here,
3141 rather than assuming zeroes, but we can't read the file since
3142 it was opened using bfd_openw. */
3143 if (pr
->addend
!= 0)
3146 bfd_reloc_status_type r
;
3150 size
= bfd_get_reloc_size (howto
);
3151 buf
= bfd_zmalloc (size
);
3154 r
= MY_relocate_contents (howto
, flaginfo
->output_bfd
,
3161 case bfd_reloc_outofrange
:
3163 case bfd_reloc_overflow
:
3164 if (! ((*flaginfo
->info
->callbacks
->reloc_overflow
)
3165 (flaginfo
->info
, NULL
,
3166 (p
->type
== bfd_section_reloc_link_order
3167 ? bfd_section_name (flaginfo
->output_bfd
,
3170 howto
->name
, pr
->addend
, NULL
,
3171 (asection
*) NULL
, (bfd_vma
) 0)))
3178 ok
= bfd_set_section_contents (flaginfo
->output_bfd
, o
,
3180 (file_ptr
) p
->offset
,
3187 rel_size
= obj_reloc_entry_size (flaginfo
->output_bfd
);
3188 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3189 || bfd_bwrite (rel_ptr
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
3192 *reloff_ptr
+= rel_size
;
3194 /* Assert that the relocs have not run into the symbols, and that n
3195 the text relocs have not run into the data relocs. */
3196 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3197 && (reloff_ptr
!= &flaginfo
->treloff
3199 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3204 /* Get the section corresponding to a reloc index. */
3206 static inline asection
*
3207 aout_reloc_type_to_section (bfd
*abfd
, int type
)
3211 case RTEXT
: return obj_textsec (abfd
);
3212 case RDATA
: return obj_datasec (abfd
);
3213 case RBSS
: return obj_bsssec (abfd
);
3214 case RABS
: return bfd_abs_section_ptr
;
3215 case REXT
: return bfd_und_section_ptr
;
3221 pdp11_aout_link_input_section (struct aout_final_link_info
*flaginfo
,
3223 asection
*input_section
,
3225 bfd_size_type rel_size
,
3228 bfd_boolean (*check_dynamic_reloc
)
3229 (struct bfd_link_info
*, bfd
*, asection
*,
3230 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3233 bfd_boolean relocatable
;
3234 struct external_nlist
*syms
;
3236 struct aout_link_hash_entry
**sym_hashes
;
3241 output_bfd
= flaginfo
->output_bfd
;
3242 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
3244 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_SIZE
);
3245 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
3246 == output_bfd
->xvec
->header_byteorder
);
3248 relocatable
= flaginfo
->info
->relocatable
;
3249 syms
= obj_aout_external_syms (input_bfd
);
3250 strings
= obj_aout_external_strings (input_bfd
);
3251 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
3252 symbol_map
= flaginfo
->symbol_map
;
3255 rel_end
= rel
+ rel_size
;
3256 for (; rel
< rel_end
; rel
+= RELOC_SIZE
)
3263 reloc_howto_type
*howto
;
3264 struct aout_link_hash_entry
*h
= NULL
;
3266 bfd_reloc_status_type r
;
3269 reloc_entry
= GET_WORD (input_bfd
, (void *) rel
);
3270 if (reloc_entry
== 0)
3274 unsigned int howto_idx
;
3276 r_index
= (reloc_entry
& RIDXMASK
) >> 4;
3277 r_type
= reloc_entry
& RTYPE
;
3278 r_pcrel
= reloc_entry
& RELFLG
;
3279 r_addr
= (char *) rel
- (char *) relocs
;
3281 r_extern
= (r_type
== REXT
);
3283 howto_idx
= r_pcrel
;
3284 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_pdp11
));
3285 howto
= howto_table_pdp11
+ howto_idx
;
3290 /* We are generating a relocatable output file, and must
3291 modify the reloc accordingly. */
3294 /* If we know the symbol this relocation is against,
3295 convert it into a relocation against a section. This
3296 is what the native linker does. */
3297 h
= sym_hashes
[r_index
];
3299 && (h
->root
.type
== bfd_link_hash_defined
3300 || h
->root
.type
== bfd_link_hash_defweak
))
3302 asection
*output_section
;
3304 /* Compute a new r_index. */
3305 output_section
= h
->root
.u
.def
.section
->output_section
;
3306 if (output_section
== obj_textsec (output_bfd
))
3308 else if (output_section
== obj_datasec (output_bfd
))
3310 else if (output_section
== obj_bsssec (output_bfd
))
3315 /* Add the symbol value and the section VMA to the
3316 addend stored in the contents. */
3317 relocation
= (h
->root
.u
.def
.value
3318 + output_section
->vma
3319 + h
->root
.u
.def
.section
->output_offset
);
3323 /* We must change r_index according to the symbol
3325 r_index
= symbol_map
[r_index
];
3331 /* We decided to strip this symbol, but it
3332 turns out that we can't. Note that we
3333 lose the other and desc information here.
3334 I don't think that will ever matter for a
3340 if (!aout_link_write_other_symbol (&h
->root
.root
,
3350 name
= strings
+ GET_WORD (input_bfd
,
3351 syms
[r_index
].e_strx
);
3352 if (! ((*flaginfo
->info
->callbacks
->unattached_reloc
)
3353 (flaginfo
->info
, name
, input_bfd
, input_section
,
3363 /* Write out the new r_index value. */
3364 reloc_entry
= GET_WORD (input_bfd
, rel
);
3365 reloc_entry
&= RIDXMASK
;
3366 reloc_entry
|= r_index
<< 4;
3367 PUT_WORD (input_bfd
, reloc_entry
, rel
);
3373 /* This is a relocation against a section. We must
3374 adjust by the amount that the section moved. */
3375 section
= aout_reloc_type_to_section (input_bfd
, r_type
);
3376 relocation
= (section
->output_section
->vma
3377 + section
->output_offset
3381 /* Change the address of the relocation. */
3382 fprintf (stderr
, "TODO: change the address of the relocation\n");
3384 /* Adjust a PC relative relocation by removing the reference
3385 to the original address in the section and including the
3386 reference to the new address. */
3388 relocation
-= (input_section
->output_section
->vma
3389 + input_section
->output_offset
3390 - input_section
->vma
);
3392 #ifdef MY_relocatable_reloc
3393 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
3396 if (relocation
== 0)
3399 r
= MY_relocate_contents (howto
,
3400 input_bfd
, relocation
,
3407 /* We are generating an executable, and must do a full
3412 h
= sym_hashes
[r_index
];
3415 && (h
->root
.type
== bfd_link_hash_defined
3416 || h
->root
.type
== bfd_link_hash_defweak
))
3418 relocation
= (h
->root
.u
.def
.value
3419 + h
->root
.u
.def
.section
->output_section
->vma
3420 + h
->root
.u
.def
.section
->output_offset
);
3423 && h
->root
.type
== bfd_link_hash_undefweak
)
3435 section
= aout_reloc_type_to_section (input_bfd
, r_type
);
3436 relocation
= (section
->output_section
->vma
3437 + section
->output_offset
3440 relocation
+= input_section
->vma
;
3443 if (check_dynamic_reloc
!= NULL
)
3447 if (! ((*check_dynamic_reloc
)
3448 (flaginfo
->info
, input_bfd
, input_section
, h
,
3449 (void *) rel
, contents
, &skip
, &relocation
)))
3455 /* Now warn if a global symbol is undefined. We could not
3456 do this earlier, because check_dynamic_reloc might want
3457 to skip this reloc. */
3458 if (hundef
&& ! flaginfo
->info
->shared
)
3463 name
= h
->root
.root
.string
;
3465 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
3466 if (! ((*flaginfo
->info
->callbacks
->undefined_symbol
)
3467 (flaginfo
->info
, name
, input_bfd
, input_section
,
3472 r
= MY_final_link_relocate (howto
,
3473 input_bfd
, input_section
,
3474 contents
, r_addr
, relocation
,
3478 if (r
!= bfd_reloc_ok
)
3483 case bfd_reloc_outofrange
:
3485 case bfd_reloc_overflow
:
3492 name
= strings
+ GET_WORD (input_bfd
,
3493 syms
[r_index
].e_strx
);
3498 s
= aout_reloc_type_to_section (input_bfd
, r_type
);
3499 name
= bfd_section_name (input_bfd
, s
);
3501 if (! ((*flaginfo
->info
->callbacks
->reloc_overflow
)
3502 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
,
3503 howto
->name
, (bfd_vma
) 0, input_bfd
,
3504 input_section
, r_addr
)))
3515 /* Link an a.out section into the output file. */
3518 aout_link_input_section (struct aout_final_link_info
*flaginfo
,
3520 asection
*input_section
,
3521 file_ptr
*reloff_ptr
,
3522 bfd_size_type rel_size
)
3524 bfd_size_type input_size
;
3527 /* Get the section contents. */
3528 input_size
= input_section
->size
;
3529 if (! bfd_get_section_contents (input_bfd
, input_section
,
3530 (void *) flaginfo
->contents
,
3531 (file_ptr
) 0, input_size
))
3534 /* Read in the relocs if we haven't already done it. */
3535 if (aout_section_data (input_section
) != NULL
3536 && aout_section_data (input_section
)->relocs
!= NULL
)
3537 relocs
= aout_section_data (input_section
)->relocs
;
3540 relocs
= flaginfo
->relocs
;
3543 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
3544 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
3549 /* Relocate the section contents. */
3550 if (! pdp11_aout_link_input_section (flaginfo
, input_bfd
, input_section
,
3551 (bfd_byte
*) relocs
,
3552 rel_size
, flaginfo
->contents
))
3555 /* Write out the section contents. */
3556 if (! bfd_set_section_contents (flaginfo
->output_bfd
,
3557 input_section
->output_section
,
3558 (void *) flaginfo
->contents
,
3559 (file_ptr
) input_section
->output_offset
,
3563 /* If we are producing relocatable output, the relocs were
3564 modified, and we now write them out. */
3565 if (flaginfo
->info
->relocatable
&& rel_size
> 0)
3567 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
3569 if (bfd_bwrite (relocs
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
3571 *reloff_ptr
+= rel_size
;
3573 /* Assert that the relocs have not run into the symbols, and
3574 that if these are the text relocs they have not run into the
3576 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3577 && (reloff_ptr
!= &flaginfo
->treloff
3579 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3585 /* Link an a.out input BFD into the output file. */
3588 aout_link_input_bfd (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
3590 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
3592 /* If this is a dynamic object, it may need special handling. */
3593 if ((input_bfd
->flags
& DYNAMIC
) != 0
3594 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
3595 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
3596 (flaginfo
->info
, input_bfd
));
3598 /* Get the symbols. We probably have them already, unless
3599 flaginfo->info->keep_memory is FALSE. */
3600 if (! aout_get_external_symbols (input_bfd
))
3603 /* Write out the symbols and get a map of the new indices. The map
3604 is placed into flaginfo->symbol_map. */
3605 if (! aout_link_write_symbols (flaginfo
, input_bfd
))
3608 /* Relocate and write out the sections. These functions use the
3609 symbol map created by aout_link_write_symbols. The linker_mark
3610 field will be set if these sections are to be included in the
3611 link, which will normally be the case. */
3612 if (obj_textsec (input_bfd
)->linker_mark
)
3614 if (! aout_link_input_section (flaginfo
, input_bfd
,
3615 obj_textsec (input_bfd
),
3617 exec_hdr (input_bfd
)->a_trsize
))
3620 if (obj_datasec (input_bfd
)->linker_mark
)
3622 if (! aout_link_input_section (flaginfo
, input_bfd
,
3623 obj_datasec (input_bfd
),
3625 exec_hdr (input_bfd
)->a_drsize
))
3629 /* If we are not keeping memory, we don't need the symbols any
3630 longer. We still need them if we are keeping memory, because the
3631 strings in the hash table point into them. */
3632 if (! flaginfo
->info
->keep_memory
)
3634 if (! aout_link_free_symbols (input_bfd
))
3641 /* Do the final link step. This is called on the output BFD. The
3642 INFO structure should point to a list of BFDs linked through the
3643 link.next field which can be used to find each BFD which takes part
3644 in the output. Also, each section in ABFD should point to a list
3645 of bfd_link_order structures which list all the input sections for
3646 the output section. */
3649 NAME (aout
, final_link
) (bfd
*abfd
,
3650 struct bfd_link_info
*info
,
3651 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
3653 struct aout_final_link_info aout_info
;
3654 bfd_boolean includes_hash_initialized
= FALSE
;
3656 bfd_size_type trsize
, drsize
;
3657 bfd_size_type max_contents_size
;
3658 bfd_size_type max_relocs_size
;
3659 bfd_size_type max_sym_count
;
3660 bfd_size_type text_size
;
3662 struct bfd_link_order
*p
;
3664 bfd_boolean have_link_order_relocs
;
3667 abfd
->flags
|= DYNAMIC
;
3669 aout_info
.info
= info
;
3670 aout_info
.output_bfd
= abfd
;
3671 aout_info
.contents
= NULL
;
3672 aout_info
.relocs
= NULL
;
3673 aout_info
.symbol_map
= NULL
;
3674 aout_info
.output_syms
= NULL
;
3676 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
3677 aout_link_includes_newfunc
,
3678 sizeof (struct aout_link_includes_entry
),
3681 includes_hash_initialized
= TRUE
;
3683 /* Figure out the largest section size. Also, if generating
3684 relocatable output, count the relocs. */
3687 max_contents_size
= 0;
3688 max_relocs_size
= 0;
3690 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3694 if (info
->relocatable
)
3696 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
3698 trsize
+= exec_hdr (sub
)->a_trsize
;
3699 drsize
+= exec_hdr (sub
)->a_drsize
;
3703 /* FIXME: We need to identify the .text and .data sections
3704 and call get_reloc_upper_bound and canonicalize_reloc to
3705 work out the number of relocs needed, and then multiply
3706 by the reloc size. */
3707 (*_bfd_error_handler
)
3708 ("%s: relocatable link from %s to %s not supported",
3709 bfd_get_filename (abfd
),
3710 sub
->xvec
->name
, abfd
->xvec
->name
);
3711 bfd_set_error (bfd_error_invalid_operation
);
3716 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
3718 sz
= obj_textsec (sub
)->size
;
3719 if (sz
> max_contents_size
)
3720 max_contents_size
= sz
;
3721 sz
= obj_datasec (sub
)->size
;
3722 if (sz
> max_contents_size
)
3723 max_contents_size
= sz
;
3725 sz
= exec_hdr (sub
)->a_trsize
;
3726 if (sz
> max_relocs_size
)
3727 max_relocs_size
= sz
;
3728 sz
= exec_hdr (sub
)->a_drsize
;
3729 if (sz
> max_relocs_size
)
3730 max_relocs_size
= sz
;
3732 sz
= obj_aout_external_sym_count (sub
);
3733 if (sz
> max_sym_count
)
3738 if (info
->relocatable
)
3740 if (obj_textsec (abfd
) != NULL
)
3741 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
3742 ->map_head
.link_order
)
3743 * obj_reloc_entry_size (abfd
));
3744 if (obj_datasec (abfd
) != NULL
)
3745 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
3746 ->map_head
.link_order
)
3747 * obj_reloc_entry_size (abfd
));
3750 exec_hdr (abfd
)->a_trsize
= trsize
;
3751 exec_hdr (abfd
)->a_drsize
= drsize
;
3752 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
3754 /* Adjust the section sizes and vmas according to the magic number.
3755 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3756 filepos for each section. */
3757 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
3760 /* The relocation and symbol file positions differ among a.out
3761 targets. We are passed a callback routine from the backend
3762 specific code to handle this.
3763 FIXME: At this point we do not know how much space the symbol
3764 table will require. This will not work for any (nonstandard)
3765 a.out target that needs to know the symbol table size before it
3766 can compute the relocation file positions. This may or may not
3767 be the case for the hp300hpux target, for example. */
3768 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
3770 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
3771 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
3772 obj_sym_filepos (abfd
) = aout_info
.symoff
;
3774 /* We keep a count of the symbols as we output them. */
3775 obj_aout_external_sym_count (abfd
) = 0;
3777 /* We accumulate the string table as we write out the symbols. */
3778 aout_info
.strtab
= _bfd_stringtab_init ();
3779 if (aout_info
.strtab
== NULL
)
3782 /* Allocate buffers to hold section contents and relocs. */
3783 aout_info
.contents
= bfd_malloc (max_contents_size
);
3784 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
3785 aout_info
.symbol_map
= bfd_malloc (max_sym_count
* sizeof (int *));
3786 aout_info
.output_syms
= bfd_malloc ((max_sym_count
+ 1)
3787 * sizeof (struct external_nlist
));
3788 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
3789 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
3790 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
3791 || aout_info
.output_syms
== NULL
)
3794 /* If we have a symbol named __DYNAMIC, force it out now. This is
3795 required by SunOS. Doing this here rather than in sunos.c is a
3796 hack, but it's easier than exporting everything which would be
3799 struct aout_link_hash_entry
*h
;
3801 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
3802 FALSE
, FALSE
, FALSE
);
3804 aout_link_write_other_symbol (&h
->root
.root
, &aout_info
);
3807 /* The most time efficient way to do the link would be to read all
3808 the input object files into memory and then sort out the
3809 information into the output file. Unfortunately, that will
3810 probably use too much memory. Another method would be to step
3811 through everything that composes the text section and write it
3812 out, and then everything that composes the data section and write
3813 it out, and then write out the relocs, and then write out the
3814 symbols. Unfortunately, that requires reading stuff from each
3815 input file several times, and we will not be able to keep all the
3816 input files open simultaneously, and reopening them will be slow.
3818 What we do is basically process one input file at a time. We do
3819 everything we need to do with an input file once--copy over the
3820 section contents, handle the relocation information, and write
3821 out the symbols--and then we throw away the information we read
3822 from it. This approach requires a lot of lseeks of the output
3823 file, which is unfortunate but still faster than reopening a lot
3826 We use the output_has_begun field of the input BFDs to see
3827 whether we have already handled it. */
3828 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3829 sub
->output_has_begun
= FALSE
;
3831 /* Mark all sections which are to be included in the link. This
3832 will normally be every section. We need to do this so that we
3833 can identify any sections which the linker has decided to not
3835 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3837 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
3838 if (p
->type
== bfd_indirect_link_order
)
3839 p
->u
.indirect
.section
->linker_mark
= TRUE
;
3842 have_link_order_relocs
= FALSE
;
3843 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3845 for (p
= o
->map_head
.link_order
;
3849 if (p
->type
== bfd_indirect_link_order
3850 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
3851 == bfd_target_aout_flavour
))
3855 input_bfd
= p
->u
.indirect
.section
->owner
;
3856 if (! input_bfd
->output_has_begun
)
3858 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
3860 input_bfd
->output_has_begun
= TRUE
;
3863 else if (p
->type
== bfd_section_reloc_link_order
3864 || p
->type
== bfd_symbol_reloc_link_order
)
3865 /* These are handled below. */
3866 have_link_order_relocs
= TRUE
;
3869 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
3875 /* Write out any symbols that we have not already written out. */
3876 bfd_hash_traverse (&info
->hash
->table
,
3877 aout_link_write_other_symbol
,
3880 /* Now handle any relocs we were asked to create by the linker.
3881 These did not come from any input file. We must do these after
3882 we have written out all the symbols, so that we know the symbol
3884 if (have_link_order_relocs
)
3886 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3888 for (p
= o
->map_head
.link_order
;
3892 if (p
->type
== bfd_section_reloc_link_order
3893 || p
->type
== bfd_symbol_reloc_link_order
)
3895 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
3902 if (aout_info
.contents
!= NULL
)
3904 free (aout_info
.contents
);
3905 aout_info
.contents
= NULL
;
3907 if (aout_info
.relocs
!= NULL
)
3909 free (aout_info
.relocs
);
3910 aout_info
.relocs
= NULL
;
3912 if (aout_info
.symbol_map
!= NULL
)
3914 free (aout_info
.symbol_map
);
3915 aout_info
.symbol_map
= NULL
;
3917 if (aout_info
.output_syms
!= NULL
)
3919 free (aout_info
.output_syms
);
3920 aout_info
.output_syms
= NULL
;
3922 if (includes_hash_initialized
)
3924 bfd_hash_table_free (&aout_info
.includes
.root
);
3925 includes_hash_initialized
= FALSE
;
3928 /* Finish up any dynamic linking we may be doing. */
3929 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
3931 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
3935 /* Update the header information. */
3936 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
3937 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
3938 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
3939 obj_textsec (abfd
)->reloc_count
=
3940 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
3941 obj_datasec (abfd
)->reloc_count
=
3942 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
3944 /* Write out the string table, unless there are no symbols. */
3945 if (abfd
->symcount
> 0)
3947 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
3948 || ! emit_stringtab (abfd
, aout_info
.strtab
))
3951 else if (obj_textsec (abfd
)->reloc_count
== 0
3952 && obj_datasec (abfd
)->reloc_count
== 0)
3958 (file_ptr
) (obj_datasec (abfd
)->filepos
3959 + exec_hdr (abfd
)->a_data
3962 || bfd_bwrite (&b
, (bfd_size_type
) 1, abfd
) != 1)
3969 if (aout_info
.contents
!= NULL
)
3970 free (aout_info
.contents
);
3971 if (aout_info
.relocs
!= NULL
)
3972 free (aout_info
.relocs
);
3973 if (aout_info
.symbol_map
!= NULL
)
3974 free (aout_info
.symbol_map
);
3975 if (aout_info
.output_syms
!= NULL
)
3976 free (aout_info
.output_syms
);
3977 if (includes_hash_initialized
)
3978 bfd_hash_table_free (&aout_info
.includes
.root
);
3982 /* Adjust and write out the symbols for an a.out file. Set the new
3983 symbol indices into a symbol_map. */
3986 aout_link_write_symbols (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
3989 bfd_size_type sym_count
;
3991 enum bfd_link_strip strip
;
3992 enum bfd_link_discard discard
;
3993 struct external_nlist
*outsym
;
3994 bfd_size_type strtab_index
;
3995 struct external_nlist
*sym
;
3996 struct external_nlist
*sym_end
;
3997 struct aout_link_hash_entry
**sym_hash
;
4000 bfd_boolean skip_next
;
4002 output_bfd
= flaginfo
->output_bfd
;
4003 sym_count
= obj_aout_external_sym_count (input_bfd
);
4004 strings
= obj_aout_external_strings (input_bfd
);
4005 strip
= flaginfo
->info
->strip
;
4006 discard
= flaginfo
->info
->discard
;
4007 outsym
= flaginfo
->output_syms
;
4009 /* First write out a symbol for this object file, unless we are
4010 discarding such symbols. */
4011 if (strip
!= strip_all
4012 && (strip
!= strip_some
4013 || bfd_hash_lookup (flaginfo
->info
->keep_hash
, input_bfd
->filename
,
4014 FALSE
, FALSE
) != NULL
)
4015 && discard
!= discard_all
)
4017 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4018 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4019 input_bfd
->filename
, FALSE
);
4020 if (strtab_index
== (bfd_size_type
) -1)
4022 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4023 PUT_WORD (output_bfd
,
4024 (bfd_get_section_vma (output_bfd
,
4025 obj_textsec (input_bfd
)->output_section
)
4026 + obj_textsec (input_bfd
)->output_offset
),
4028 ++obj_aout_external_sym_count (output_bfd
);
4034 sym
= obj_aout_external_syms (input_bfd
);
4035 sym_end
= sym
+ sym_count
;
4036 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4037 symbol_map
= flaginfo
->symbol_map
;
4038 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4039 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4043 struct aout_link_hash_entry
*h
;
4049 /* We set *symbol_map to 0 above for all symbols. If it has
4050 already been set to -1 for this symbol, it means that we are
4051 discarding it because it appears in a duplicate header file.
4052 See the N_BINCL code below. */
4053 if (*symbol_map
== -1)
4056 /* Initialize *symbol_map to -1, which means that the symbol was
4057 not copied into the output file. We will change it later if
4058 we do copy the symbol over. */
4061 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4062 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4068 /* Pass this symbol through. It is the target of an
4069 indirect or warning symbol. */
4070 val
= GET_WORD (input_bfd
, sym
->e_value
);
4075 /* Skip this symbol, which is the target of an indirect
4076 symbol that we have changed to no longer be an indirect
4083 struct aout_link_hash_entry
*hresolve
;
4085 /* We have saved the hash table entry for this symbol, if
4086 there is one. Note that we could just look it up again
4087 in the hash table, provided we first check that it is an
4091 /* Use the name from the hash table, in case the symbol was
4094 name
= h
->root
.root
.string
;
4096 /* If this is an indirect or warning symbol, then change
4097 hresolve to the base symbol. We also change *sym_hash so
4098 that the relocation routines relocate against the real
4102 && (h
->root
.type
== bfd_link_hash_indirect
4103 || h
->root
.type
== bfd_link_hash_warning
))
4105 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4106 while (hresolve
->root
.type
== bfd_link_hash_indirect
4107 || hresolve
->root
.type
== bfd_link_hash_warning
)
4108 hresolve
= ((struct aout_link_hash_entry
*)
4109 hresolve
->root
.u
.i
.link
);
4110 *sym_hash
= hresolve
;
4113 /* If the symbol has already been written out, skip it. */
4115 && h
->root
.type
!= bfd_link_hash_warning
4118 if ((type
& N_TYPE
) == N_INDR
4119 || type
== N_WARNING
)
4121 *symbol_map
= h
->indx
;
4125 /* See if we are stripping this symbol. */
4131 case strip_debugger
:
4132 if ((type
& N_STAB
) != 0)
4136 if (bfd_hash_lookup (flaginfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4151 /* Get the value of the symbol. */
4152 if ((type
& N_TYPE
) == N_TEXT
4154 symsec
= obj_textsec (input_bfd
);
4155 else if ((type
& N_TYPE
) == N_DATA
4157 symsec
= obj_datasec (input_bfd
);
4158 else if ((type
& N_TYPE
) == N_BSS
4160 symsec
= obj_bsssec (input_bfd
);
4161 else if ((type
& N_TYPE
) == N_ABS
4163 symsec
= bfd_abs_section_ptr
;
4164 else if (((type
& N_TYPE
) == N_INDR
4165 && (hresolve
== NULL
4166 || (hresolve
->root
.type
!= bfd_link_hash_defined
4167 && hresolve
->root
.type
!= bfd_link_hash_defweak
4168 && hresolve
->root
.type
!= bfd_link_hash_common
)))
4169 || type
== N_WARNING
)
4171 /* Pass the next symbol through unchanged. The
4172 condition above for indirect symbols is so that if
4173 the indirect symbol was defined, we output it with
4174 the correct definition so the debugger will
4177 val
= GET_WORD (input_bfd
, sym
->e_value
);
4180 else if ((type
& N_STAB
) != 0)
4182 val
= GET_WORD (input_bfd
, sym
->e_value
);
4187 /* If we get here with an indirect symbol, it means that
4188 we are outputting it with a real definition. In such
4189 a case we do not want to output the next symbol,
4190 which is the target of the indirection. */
4191 if ((type
& N_TYPE
) == N_INDR
)
4196 /* We need to get the value from the hash table. We use
4197 hresolve so that if we have defined an indirect
4198 symbol we output the final definition. */
4201 switch (type
& N_TYPE
)
4204 symsec
= obj_textsec (input_bfd
);
4207 symsec
= obj_datasec (input_bfd
);
4210 symsec
= obj_bsssec (input_bfd
);
4213 symsec
= bfd_abs_section_ptr
;
4220 else if (hresolve
->root
.type
== bfd_link_hash_defined
4221 || hresolve
->root
.type
== bfd_link_hash_defweak
)
4223 asection
*input_section
;
4224 asection
*output_section
;
4226 /* This case usually means a common symbol which was
4227 turned into a defined symbol. */
4228 input_section
= hresolve
->root
.u
.def
.section
;
4229 output_section
= input_section
->output_section
;
4230 BFD_ASSERT (bfd_is_abs_section (output_section
)
4231 || output_section
->owner
== output_bfd
);
4232 val
= (hresolve
->root
.u
.def
.value
4233 + bfd_get_section_vma (output_bfd
, output_section
)
4234 + input_section
->output_offset
);
4236 /* Get the correct type based on the section. If
4237 this is a constructed set, force it to be
4238 globally visible. */
4247 if (output_section
== obj_textsec (output_bfd
))
4248 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4251 else if (output_section
== obj_datasec (output_bfd
))
4252 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4255 else if (output_section
== obj_bsssec (output_bfd
))
4256 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4260 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4264 else if (hresolve
->root
.type
== bfd_link_hash_common
)
4265 val
= hresolve
->root
.u
.c
.size
;
4266 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
4275 val
= (symsec
->output_section
->vma
4276 + symsec
->output_offset
4277 + (GET_WORD (input_bfd
, sym
->e_value
)
4280 /* If this is a global symbol set the written flag, and if
4281 it is a local symbol see if we should discard it. */
4285 h
->indx
= obj_aout_external_sym_count (output_bfd
);
4287 else if ((type
& N_TYPE
) != N_SETT
4288 && (type
& N_TYPE
) != N_SETD
4289 && (type
& N_TYPE
) != N_SETB
4290 && (type
& N_TYPE
) != N_SETA
)
4295 case discard_sec_merge
:
4298 if ((type
& N_STAB
) == 0
4299 && bfd_is_local_label_name (input_bfd
, name
))
4313 /* An N_BINCL symbol indicates the start of the stabs
4314 entries for a header file. We need to scan ahead to the
4315 next N_EINCL symbol, ignoring nesting, adding up all the
4316 characters in the symbol names, not including the file
4317 numbers in types (the first number after an open
4319 if (type
== N_BINCL
)
4321 struct external_nlist
*incl_sym
;
4323 struct aout_link_includes_entry
*incl_entry
;
4324 struct aout_link_includes_totals
*t
;
4328 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
4332 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
4333 if (incl_type
== N_EINCL
)
4339 else if (incl_type
== N_BINCL
)
4345 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
4346 for (; *s
!= '\0'; s
++)
4351 /* Skip the file number. */
4353 while (ISDIGIT (*s
))
4361 /* If we have already included a header file with the
4362 same value, then replace this one with an N_EXCL
4364 copy
= ! flaginfo
->info
->keep_memory
;
4365 incl_entry
= aout_link_includes_lookup (&flaginfo
->includes
,
4367 if (incl_entry
== NULL
)
4369 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
4370 if (t
->total
== val
)
4374 /* This is the first time we have seen this header
4375 file with this set of stabs strings. */
4376 t
= bfd_hash_allocate (&flaginfo
->includes
.root
,
4381 t
->next
= incl_entry
->totals
;
4382 incl_entry
->totals
= t
;
4388 /* This is a duplicate header file. We must change
4389 it to be an N_EXCL entry, and mark all the
4390 included symbols to prevent outputting them. */
4394 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
4396 incl_sym
++, incl_map
++)
4400 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
4401 if (incl_type
== N_EINCL
)
4410 else if (incl_type
== N_BINCL
)
4419 /* Copy this symbol into the list of symbols we are going to
4421 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
4423 if (! flaginfo
->info
->keep_memory
)
4425 /* name points into a string table which we are going to
4426 free. If there is a hash table entry, use that string.
4427 Otherwise, copy name into memory. */
4429 name
= h
->root
.root
.string
;
4433 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4435 if (strtab_index
== (bfd_size_type
) -1)
4437 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4438 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
4439 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
4440 ++obj_aout_external_sym_count (output_bfd
);
4444 /* Write out the output symbols we have just constructed. */
4445 if (outsym
> flaginfo
->output_syms
)
4449 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0)
4451 size
= outsym
- flaginfo
->output_syms
;
4452 size
*= EXTERNAL_NLIST_SIZE
;
4453 if (bfd_bwrite ((void *) flaginfo
->output_syms
, size
, output_bfd
) != size
)
4455 flaginfo
->symoff
+= size
;
4461 /* Write out a symbol that was not associated with an a.out input
4465 bfd_getp32 (const void *p
)
4467 const bfd_byte
*addr
= p
;
4470 v
= (unsigned long) addr
[1] << 24;
4471 v
|= (unsigned long) addr
[0] << 16;
4472 v
|= (unsigned long) addr
[3] << 8;
4473 v
|= (unsigned long) addr
[2];
4477 #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000)
4479 static bfd_signed_vma
4480 bfd_getp_signed_32 (const void *p
)
4482 const bfd_byte
*addr
= p
;
4485 v
= (unsigned long) addr
[1] << 24;
4486 v
|= (unsigned long) addr
[0] << 16;
4487 v
|= (unsigned long) addr
[3] << 8;
4488 v
|= (unsigned long) addr
[2];
4489 return COERCE32 (v
);
4493 bfd_putp32 (bfd_vma data
, void *p
)
4497 addr
[0] = (data
>> 16) & 0xff;
4498 addr
[1] = (data
>> 24) & 0xff;
4499 addr
[2] = (data
>> 0) & 0xff;
4500 addr
[3] = (data
>> 8) & 0xff;
4503 const bfd_target
MY (vec
) =
4505 TARGETNAME
, /* Name. */
4506 bfd_target_aout_flavour
,
4507 BFD_ENDIAN_LITTLE
, /* Target byte order (little). */
4508 BFD_ENDIAN_LITTLE
, /* Target headers byte order (little). */
4509 (HAS_RELOC
| EXEC_P
| /* Object flags. */
4510 HAS_LINENO
| HAS_DEBUG
|
4511 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
),
4512 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_CODE
| SEC_DATA
),
4513 MY_symbol_leading_char
,
4514 AR_PAD_CHAR
, /* AR_pad_char. */
4515 15, /* AR_max_namelen. */
4516 0, /* match priority. */
4517 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
4518 bfd_getp32
, bfd_getp_signed_32
, bfd_putp32
,
4519 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* Data. */
4520 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
4521 bfd_getp32
, bfd_getp_signed_32
, bfd_putp32
,
4522 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* Headers. */
4523 {_bfd_dummy_target
, MY_object_p
, /* bfd_check_format. */
4524 bfd_generic_archive_p
, MY_core_file_p
},
4525 {bfd_false
, MY_mkobject
, /* bfd_set_format. */
4526 _bfd_generic_mkarchive
, bfd_false
},
4527 {bfd_false
, MY_write_object_contents
, /* bfd_write_contents. */
4528 _bfd_write_archive_contents
, bfd_false
},
4530 BFD_JUMP_TABLE_GENERIC (MY
),
4531 BFD_JUMP_TABLE_COPY (MY
),
4532 BFD_JUMP_TABLE_CORE (MY
),
4533 BFD_JUMP_TABLE_ARCHIVE (MY
),
4534 BFD_JUMP_TABLE_SYMBOLS (MY
),
4535 BFD_JUMP_TABLE_RELOCS (MY
),
4536 BFD_JUMP_TABLE_WRITE (MY
),
4537 BFD_JUMP_TABLE_LINK (MY
),
4538 BFD_JUMP_TABLE_DYNAMIC (MY
),
4540 /* Alternative_target. */
4543 (void *) MY_backend_data