1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright (C) 1990-2018 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
28 BFD supports a number of different flavours of a.out format,
29 though the major differences are only the sizes of the
30 structures on disk, and the shape of the relocation
33 The support is split into a basic support file @file{aoutx.h}
34 and other files which derive functions from the base. One
35 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
36 adds to the basic a.out functions support for sun3, sun4, and
37 386 a.out files, to create a target jump vector for a specific
40 This information is further split out into more specific files
41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 and @file{demo64.c} for a demonstration of a 64 bit a.out format.
44 The base file @file{aoutx.h} defines general mechanisms for
45 reading and writing records to and from disk and various
46 other methods which BFD requires. It is included by
47 @file{aout32.c} and @file{aout64.c} to form the names
48 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
50 As an example, this is what goes on to make the back end for a
51 sun4, from @file{aout32.c}:
53 | #define ARCH_SIZE 32
59 | aout_32_canonicalize_reloc
60 | aout_32_find_nearest_line
62 | aout_32_get_reloc_upper_bound
67 | #define TARGET_NAME "a.out-sunos-big"
68 | #define VECNAME sparc_aout_sunos_be_vec
71 requires all the names from @file{aout32.c}, and produces the jump vector
73 | sparc_aout_sunos_be_vec
75 The file @file{host-aout.c} is a special case. It is for a large set
76 of hosts that use ``more or less standard'' a.out files, and
77 for which cross-debugging is not interesting. It uses the
78 standard 32-bit a.out support routines, but determines the
79 file offsets and addresses of the text, data, and BSS
80 sections, the machine architecture and machine type, and the
81 entry point address, in a host-dependent manner. Once these
82 values have been determined, generic code is used to handle
85 When porting it to run on a new system, you must supply:
89 | HOST_MACHINE_ARCH (optional)
90 | HOST_MACHINE_MACHINE (optional)
91 | HOST_TEXT_START_ADDR
94 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
95 values, plus the structures and macros defined in @file{a.out.h} on
96 your host system, will produce a BFD target that will access
97 ordinary a.out files on your host. To configure a new machine
98 to use @file{host-aout.c}, specify:
100 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
101 | TDEPFILES= host-aout.o trad-core.o
103 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac}
105 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
106 configuration is selected. */
109 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
110 Doesn't matter what the setting of WP_TEXT is on output, but it'll
112 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
113 * Any BFD with both flags clear is OMAGIC.
114 (Just want to make these explicit, so the conditions tested in this
115 file make sense if you're more familiar with a.out than with BFD.) */
117 #define KEEPIT udata.i
121 #include "safe-ctype.h"
126 #include "aout/aout64.h"
127 #include "aout/stab_gnu.h"
135 The file @file{aoutx.h} provides for both the @emph{standard}
136 and @emph{extended} forms of a.out relocation records.
138 The standard records contain only an address, a symbol index,
139 and a type field. The extended records also have a full
140 integer for an addend. */
142 #ifndef CTOR_TABLE_RELOC_HOWTO
143 #define CTOR_TABLE_RELOC_IDX 2
144 #define CTOR_TABLE_RELOC_HOWTO(BFD) \
145 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
146 ? howto_table_ext : howto_table_std) \
147 + CTOR_TABLE_RELOC_IDX)
150 #ifndef MY_swap_std_reloc_in
151 #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
154 #ifndef MY_swap_ext_reloc_in
155 #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
158 #ifndef MY_swap_std_reloc_out
159 #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
162 #ifndef MY_swap_ext_reloc_out
163 #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
166 #ifndef MY_final_link_relocate
167 #define MY_final_link_relocate _bfd_final_link_relocate
170 #ifndef MY_relocate_contents
171 #define MY_relocate_contents _bfd_relocate_contents
174 #define howto_table_ext NAME (aout, ext_howto_table)
175 #define howto_table_std NAME (aout, std_howto_table)
177 reloc_howto_type howto_table_ext
[] =
179 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
180 HOWTO (RELOC_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
, 0, "8", FALSE
, 0, 0x000000ff, FALSE
),
181 HOWTO (RELOC_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
, 0, "16", FALSE
, 0, 0x0000ffff, FALSE
),
182 HOWTO (RELOC_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "32", FALSE
, 0, 0xffffffff, FALSE
),
183 HOWTO (RELOC_DISP8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0, "DISP8", FALSE
, 0, 0x000000ff, FALSE
),
184 HOWTO (RELOC_DISP16
, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0, "DISP16", FALSE
, 0, 0x0000ffff, FALSE
),
185 HOWTO (RELOC_DISP32
, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0, "DISP32", FALSE
, 0, 0xffffffff, FALSE
),
186 HOWTO (RELOC_WDISP30
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "WDISP30", FALSE
, 0, 0x3fffffff, FALSE
),
187 HOWTO (RELOC_WDISP22
, 2, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "WDISP22", FALSE
, 0, 0x003fffff, FALSE
),
188 HOWTO (RELOC_HI22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "HI22", FALSE
, 0, 0x003fffff, FALSE
),
189 HOWTO (RELOC_22
, 0, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "22", FALSE
, 0, 0x003fffff, FALSE
),
190 HOWTO (RELOC_13
, 0, 2, 13, FALSE
, 0, complain_overflow_bitfield
, 0, "13", FALSE
, 0, 0x00001fff, FALSE
),
191 HOWTO (RELOC_LO10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "LO10", FALSE
, 0, 0x000003ff, FALSE
),
192 HOWTO (RELOC_SFA_BASE
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_BASE", FALSE
, 0, 0xffffffff, FALSE
),
193 HOWTO (RELOC_SFA_OFF13
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_OFF13", FALSE
, 0, 0xffffffff, FALSE
),
194 HOWTO (RELOC_BASE10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "BASE10", FALSE
, 0, 0x000003ff, FALSE
),
195 HOWTO (RELOC_BASE13
, 0, 2, 13, FALSE
, 0, complain_overflow_signed
, 0, "BASE13", FALSE
, 0, 0x00001fff, FALSE
),
196 HOWTO (RELOC_BASE22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "BASE22", FALSE
, 0, 0x003fffff, FALSE
),
197 HOWTO (RELOC_PC10
, 0, 2, 10, TRUE
, 0, complain_overflow_dont
, 0, "PC10", FALSE
, 0, 0x000003ff, TRUE
),
198 HOWTO (RELOC_PC22
, 10, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "PC22", FALSE
, 0, 0x003fffff, TRUE
),
199 HOWTO (RELOC_JMP_TBL
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "JMP_TBL", FALSE
, 0, 0x3fffffff, FALSE
),
200 HOWTO (RELOC_SEGOFF16
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "SEGOFF16", FALSE
, 0, 0x00000000, FALSE
),
201 HOWTO (RELOC_GLOB_DAT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "GLOB_DAT", FALSE
, 0, 0x00000000, FALSE
),
202 HOWTO (RELOC_JMP_SLOT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "JMP_SLOT", FALSE
, 0, 0x00000000, FALSE
),
203 HOWTO (RELOC_RELATIVE
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "RELATIVE", FALSE
, 0, 0x00000000, FALSE
),
204 HOWTO (0, 0, 3, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
205 HOWTO (0, 0, 3, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
206 #define RELOC_SPARC_REV32 RELOC_WDISP19
207 HOWTO (RELOC_SPARC_REV32
, 0, 2, 32, FALSE
, 0, complain_overflow_dont
, 0,"R_SPARC_REV32",FALSE
, 0, 0xffffffff, FALSE
),
210 /* Convert standard reloc records to "arelent" format (incl byte swap). */
212 reloc_howto_type howto_table_std
[] =
214 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
215 HOWTO ( 0, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,0,"8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
216 HOWTO ( 1, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
217 HOWTO ( 2, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
218 HOWTO ( 3, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,0,"64", TRUE
, 0xdeaddead,0xdeaddead, FALSE
),
219 HOWTO ( 4, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0,"DISP8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
220 HOWTO ( 5, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0,"DISP16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
221 HOWTO ( 6, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0,"DISP32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
222 HOWTO ( 7, 0, 4, 64, TRUE
, 0, complain_overflow_signed
, 0,"DISP64", TRUE
, 0xfeedface,0xfeedface, FALSE
),
223 HOWTO ( 8, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"GOT_REL", FALSE
, 0,0x00000000, FALSE
),
224 HOWTO ( 9, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"BASE16", FALSE
,0xffffffff,0xffffffff, FALSE
),
225 HOWTO (10, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"BASE32", FALSE
,0xffffffff,0xffffffff, FALSE
),
231 HOWTO (16, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"JMP_TABLE", FALSE
, 0,0x00000000, FALSE
),
247 HOWTO (32, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"RELATIVE", FALSE
, 0,0x00000000, FALSE
),
255 HOWTO (40, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"BASEREL", FALSE
, 0,0x00000000, FALSE
),
258 #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
261 NAME (aout
, reloc_type_lookup
) (bfd
*abfd
, bfd_reloc_code_real_type code
)
263 #define EXT(i, j) case i: return & howto_table_ext [j]
264 #define STD(i, j) case i: return & howto_table_std [j]
265 int ext
= obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
;
267 if (code
== BFD_RELOC_CTOR
)
268 switch (bfd_arch_bits_per_address (abfd
))
281 EXT (BFD_RELOC_8
, 0);
282 EXT (BFD_RELOC_16
, 1);
283 EXT (BFD_RELOC_32
, 2);
284 EXT (BFD_RELOC_HI22
, 8);
285 EXT (BFD_RELOC_LO10
, 11);
286 EXT (BFD_RELOC_32_PCREL_S2
, 6);
287 EXT (BFD_RELOC_SPARC_WDISP22
, 7);
288 EXT (BFD_RELOC_SPARC13
, 10);
289 EXT (BFD_RELOC_SPARC_GOT10
, 14);
290 EXT (BFD_RELOC_SPARC_BASE13
, 15);
291 EXT (BFD_RELOC_SPARC_GOT13
, 15);
292 EXT (BFD_RELOC_SPARC_GOT22
, 16);
293 EXT (BFD_RELOC_SPARC_PC10
, 17);
294 EXT (BFD_RELOC_SPARC_PC22
, 18);
295 EXT (BFD_RELOC_SPARC_WPLT30
, 19);
296 EXT (BFD_RELOC_SPARC_REV32
, 26);
304 STD (BFD_RELOC_8
, 0);
305 STD (BFD_RELOC_16
, 1);
306 STD (BFD_RELOC_32
, 2);
307 STD (BFD_RELOC_8_PCREL
, 4);
308 STD (BFD_RELOC_16_PCREL
, 5);
309 STD (BFD_RELOC_32_PCREL
, 6);
310 STD (BFD_RELOC_16_BASEREL
, 9);
311 STD (BFD_RELOC_32_BASEREL
, 10);
318 NAME (aout
, reloc_name_lookup
) (bfd
*abfd
, const char *r_name
)
320 unsigned int i
, size
;
321 reloc_howto_type
*howto_table
;
323 if (obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
)
325 howto_table
= howto_table_ext
;
326 size
= sizeof (howto_table_ext
) / sizeof (howto_table_ext
[0]);
330 howto_table
= howto_table_std
;
331 size
= sizeof (howto_table_std
) / sizeof (howto_table_std
[0]);
334 for (i
= 0; i
< size
; i
++)
335 if (howto_table
[i
].name
!= NULL
336 && strcasecmp (howto_table
[i
].name
, r_name
) == 0)
337 return &howto_table
[i
];
344 Internal entry points
347 @file{aoutx.h} exports several routines for accessing the
348 contents of an a.out file, which are gathered and exported in
349 turn by various format specific files (eg sunos.c).
354 aout_@var{size}_swap_exec_header_in
357 void aout_@var{size}_swap_exec_header_in,
359 struct external_exec *bytes,
360 struct internal_exec *execp);
363 Swap the information in an executable header @var{raw_bytes} taken
364 from a raw byte stream memory image into the internal exec header
365 structure @var{execp}.
368 #ifndef NAME_swap_exec_header_in
370 NAME (aout
, swap_exec_header_in
) (bfd
*abfd
,
371 struct external_exec
*bytes
,
372 struct internal_exec
*execp
)
374 /* The internal_exec structure has some fields that are unused in this
375 configuration (IE for i960), so ensure that all such uninitialized
376 fields are zero'd out. There are places where two of these structs
377 are memcmp'd, and thus the contents do matter. */
378 memset ((void *) execp
, 0, sizeof (struct internal_exec
));
379 /* Now fill in fields in the execp, from the bytes in the raw data. */
380 execp
->a_info
= H_GET_32 (abfd
, bytes
->e_info
);
381 execp
->a_text
= GET_WORD (abfd
, bytes
->e_text
);
382 execp
->a_data
= GET_WORD (abfd
, bytes
->e_data
);
383 execp
->a_bss
= GET_WORD (abfd
, bytes
->e_bss
);
384 execp
->a_syms
= GET_WORD (abfd
, bytes
->e_syms
);
385 execp
->a_entry
= GET_WORD (abfd
, bytes
->e_entry
);
386 execp
->a_trsize
= GET_WORD (abfd
, bytes
->e_trsize
);
387 execp
->a_drsize
= GET_WORD (abfd
, bytes
->e_drsize
);
389 #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
394 aout_@var{size}_swap_exec_header_out
397 void aout_@var{size}_swap_exec_header_out
399 struct internal_exec *execp,
400 struct external_exec *raw_bytes);
403 Swap the information in an internal exec header structure
404 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
407 NAME (aout
, swap_exec_header_out
) (bfd
*abfd
,
408 struct internal_exec
*execp
,
409 struct external_exec
*bytes
)
411 /* Now fill in fields in the raw data, from the fields in the exec struct. */
412 H_PUT_32 (abfd
, execp
->a_info
, bytes
->e_info
);
413 PUT_WORD (abfd
, execp
->a_text
, bytes
->e_text
);
414 PUT_WORD (abfd
, execp
->a_data
, bytes
->e_data
);
415 PUT_WORD (abfd
, execp
->a_bss
, bytes
->e_bss
);
416 PUT_WORD (abfd
, execp
->a_syms
, bytes
->e_syms
);
417 PUT_WORD (abfd
, execp
->a_entry
, bytes
->e_entry
);
418 PUT_WORD (abfd
, execp
->a_trsize
, bytes
->e_trsize
);
419 PUT_WORD (abfd
, execp
->a_drsize
, bytes
->e_drsize
);
422 /* Make all the section for an a.out file. */
425 NAME (aout
, make_sections
) (bfd
*abfd
)
427 if (obj_textsec (abfd
) == NULL
&& bfd_make_section (abfd
, ".text") == NULL
)
429 if (obj_datasec (abfd
) == NULL
&& bfd_make_section (abfd
, ".data") == NULL
)
431 if (obj_bsssec (abfd
) == NULL
&& bfd_make_section (abfd
, ".bss") == NULL
)
438 aout_@var{size}_some_aout_object_p
441 const bfd_target *aout_@var{size}_some_aout_object_p
443 struct internal_exec *execp,
444 const bfd_target *(*callback_to_real_object_p) (bfd *));
447 Some a.out variant thinks that the file open in @var{abfd}
448 checking is an a.out file. Do some more checking, and set up
449 for access if it really is. Call back to the calling
450 environment's "finish up" function just before returning, to
451 handle any last-minute setup.
455 NAME (aout
, some_aout_object_p
) (bfd
*abfd
,
456 struct internal_exec
*execp
,
457 const bfd_target
*(*callback_to_real_object_p
) (bfd
*))
459 struct aout_data_struct
*rawptr
, *oldrawptr
;
460 const bfd_target
*result
;
461 bfd_size_type amt
= sizeof (* rawptr
);
463 rawptr
= (struct aout_data_struct
*) bfd_zalloc (abfd
, amt
);
467 oldrawptr
= abfd
->tdata
.aout_data
;
468 abfd
->tdata
.aout_data
= rawptr
;
470 /* Copy the contents of the old tdata struct. */
471 if (oldrawptr
!= NULL
)
472 *abfd
->tdata
.aout_data
= *oldrawptr
;
474 abfd
->tdata
.aout_data
->a
.hdr
= &rawptr
->e
;
475 /* Copy in the internal_exec struct. */
476 *(abfd
->tdata
.aout_data
->a
.hdr
) = *execp
;
477 execp
= abfd
->tdata
.aout_data
->a
.hdr
;
479 /* Set the file flags. */
480 abfd
->flags
= BFD_NO_FLAGS
;
481 if (execp
->a_drsize
|| execp
->a_trsize
)
482 abfd
->flags
|= HAS_RELOC
;
483 /* Setting of EXEC_P has been deferred to the bottom of this function. */
485 abfd
->flags
|= HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
;
486 if (N_DYNAMIC (execp
))
487 abfd
->flags
|= DYNAMIC
;
489 if (N_MAGIC (execp
) == ZMAGIC
)
491 abfd
->flags
|= D_PAGED
| WP_TEXT
;
492 adata (abfd
).magic
= z_magic
;
494 else if (N_MAGIC (execp
) == QMAGIC
)
496 abfd
->flags
|= D_PAGED
| WP_TEXT
;
497 adata (abfd
).magic
= z_magic
;
498 adata (abfd
).subformat
= q_magic_format
;
500 else if (N_MAGIC (execp
) == NMAGIC
)
502 abfd
->flags
|= WP_TEXT
;
503 adata (abfd
).magic
= n_magic
;
505 else if (N_MAGIC (execp
) == OMAGIC
506 || N_MAGIC (execp
) == BMAGIC
)
507 adata (abfd
).magic
= o_magic
;
509 /* Should have been checked with N_BADMAG before this routine
513 bfd_get_start_address (abfd
) = execp
->a_entry
;
515 obj_aout_symbols (abfd
) = NULL
;
516 bfd_get_symcount (abfd
) = execp
->a_syms
/ sizeof (struct external_nlist
);
518 /* The default relocation entry size is that of traditional V7 Unix. */
519 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
521 /* The default symbol entry size is that of traditional Unix. */
522 obj_symbol_entry_size (abfd
) = EXTERNAL_NLIST_SIZE
;
525 bfd_init_window (&obj_aout_sym_window (abfd
));
526 bfd_init_window (&obj_aout_string_window (abfd
));
528 obj_aout_external_syms (abfd
) = NULL
;
529 obj_aout_external_strings (abfd
) = NULL
;
530 obj_aout_sym_hashes (abfd
) = NULL
;
532 if (! NAME (aout
, make_sections
) (abfd
))
535 obj_datasec (abfd
)->size
= execp
->a_data
;
536 obj_bsssec (abfd
)->size
= execp
->a_bss
;
538 obj_textsec (abfd
)->flags
=
539 (execp
->a_trsize
!= 0
540 ? (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_RELOC
)
541 : (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
));
542 obj_datasec (abfd
)->flags
=
543 (execp
->a_drsize
!= 0
544 ? (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
| SEC_RELOC
)
545 : (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
));
546 obj_bsssec (abfd
)->flags
= SEC_ALLOC
;
548 #ifdef THIS_IS_ONLY_DOCUMENTATION
549 /* The common code can't fill in these things because they depend
550 on either the start address of the text segment, the rounding
551 up of virtual addresses between segments, or the starting file
552 position of the text segment -- all of which varies among different
553 versions of a.out. */
555 /* Call back to the format-dependent code to fill in the rest of the
556 fields and do any further cleanup. Things that should be filled
557 in by the callback: */
559 struct exec
*execp
= exec_hdr (abfd
);
561 obj_textsec (abfd
)->size
= N_TXTSIZE (execp
);
562 /* Data and bss are already filled in since they're so standard. */
564 /* The virtual memory addresses of the sections. */
565 obj_textsec (abfd
)->vma
= N_TXTADDR (execp
);
566 obj_datasec (abfd
)->vma
= N_DATADDR (execp
);
567 obj_bsssec (abfd
)->vma
= N_BSSADDR (execp
);
569 /* The file offsets of the sections. */
570 obj_textsec (abfd
)->filepos
= N_TXTOFF (execp
);
571 obj_datasec (abfd
)->filepos
= N_DATOFF (execp
);
573 /* The file offsets of the relocation info. */
574 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF (execp
);
575 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF (execp
);
577 /* The file offsets of the string table and symbol table. */
578 obj_str_filepos (abfd
) = N_STROFF (execp
);
579 obj_sym_filepos (abfd
) = N_SYMOFF (execp
);
581 /* Determine the architecture and machine type of the object file. */
582 switch (N_MACHTYPE (exec_hdr (abfd
)))
585 abfd
->obj_arch
= bfd_arch_obscure
;
589 adata (abfd
)->page_size
= TARGET_PAGE_SIZE
;
590 adata (abfd
)->segment_size
= SEGMENT_SIZE
;
591 adata (abfd
)->exec_bytes_size
= EXEC_BYTES_SIZE
;
595 /* The architecture is encoded in various ways in various a.out variants,
596 or is not encoded at all in some of them. The relocation size depends
597 on the architecture and the a.out variant. Finally, the return value
598 is the bfd_target vector in use. If an error occurs, return zero and
599 set bfd_error to the appropriate error code.
601 Formats such as b.out, which have additional fields in the a.out
602 header, should cope with them in this callback as well. */
603 #endif /* DOCUMENTATION */
605 result
= (*callback_to_real_object_p
) (abfd
);
607 /* Now that the segment addresses have been worked out, take a better
608 guess at whether the file is executable. If the entry point
609 is within the text segment, assume it is. (This makes files
610 executable even if their entry point address is 0, as long as
611 their text starts at zero.).
613 This test had to be changed to deal with systems where the text segment
614 runs at a different location than the default. The problem is that the
615 entry address can appear to be outside the text segment, thus causing an
616 erroneous conclusion that the file isn't executable.
618 To fix this, we now accept any non-zero entry point as an indication of
619 executability. This will work most of the time, since only the linker
620 sets the entry point, and that is likely to be non-zero for most systems. */
622 if (execp
->a_entry
!= 0
623 || (execp
->a_entry
>= obj_textsec (abfd
)->vma
624 && execp
->a_entry
< (obj_textsec (abfd
)->vma
625 + obj_textsec (abfd
)->size
)
626 && execp
->a_trsize
== 0
627 && execp
->a_drsize
== 0))
628 abfd
->flags
|= EXEC_P
;
632 struct stat stat_buf
;
634 /* The original heuristic doesn't work in some important cases.
635 The a.out file has no information about the text start
636 address. For files (like kernels) linked to non-standard
637 addresses (ld -Ttext nnn) the entry point may not be between
638 the default text start (obj_textsec(abfd)->vma) and
639 (obj_textsec(abfd)->vma) + text size. This is not just a mach
640 issue. Many kernels are loaded at non standard addresses. */
641 if (abfd
->iostream
!= NULL
642 && (abfd
->flags
& BFD_IN_MEMORY
) == 0
643 && (fstat (fileno ((FILE *) (abfd
->iostream
)), &stat_buf
) == 0)
644 && ((stat_buf
.st_mode
& 0111) != 0))
645 abfd
->flags
|= EXEC_P
;
647 #endif /* STAT_FOR_EXEC */
653 bfd_release (abfd
, rawptr
);
654 abfd
->tdata
.aout_data
= oldrawptr
;
660 aout_@var{size}_mkobject
663 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
666 Initialize BFD @var{abfd} for use with a.out files.
670 NAME (aout
, mkobject
) (bfd
*abfd
)
672 struct aout_data_struct
*rawptr
;
673 bfd_size_type amt
= sizeof (* rawptr
);
675 bfd_set_error (bfd_error_system_call
);
677 rawptr
= (struct aout_data_struct
*) bfd_zalloc (abfd
, amt
);
681 abfd
->tdata
.aout_data
= rawptr
;
682 exec_hdr (abfd
) = &(rawptr
->e
);
684 obj_textsec (abfd
) = NULL
;
685 obj_datasec (abfd
) = NULL
;
686 obj_bsssec (abfd
) = NULL
;
693 aout_@var{size}_machine_type
696 enum machine_type aout_@var{size}_machine_type
697 (enum bfd_architecture arch,
698 unsigned long machine,
699 bfd_boolean *unknown);
702 Keep track of machine architecture and machine type for
703 a.out's. Return the <<machine_type>> for a particular
704 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
705 and machine can't be represented in a.out format.
707 If the architecture is understood, machine type 0 (default)
708 is always understood.
712 NAME (aout
, machine_type
) (enum bfd_architecture arch
,
713 unsigned long machine
,
714 bfd_boolean
*unknown
)
716 enum machine_type arch_flags
;
718 arch_flags
= M_UNKNOWN
;
725 || machine
== bfd_mach_sparc
726 || machine
== bfd_mach_sparc_sparclite
727 || machine
== bfd_mach_sparc_sparclite_le
728 || machine
== bfd_mach_sparc_v8plus
729 || machine
== bfd_mach_sparc_v8plusa
730 || machine
== bfd_mach_sparc_v8plusb
731 || machine
== bfd_mach_sparc_v8plusc
732 || machine
== bfd_mach_sparc_v8plusd
733 || machine
== bfd_mach_sparc_v8pluse
734 || machine
== bfd_mach_sparc_v8plusv
735 || machine
== bfd_mach_sparc_v8plusm
736 || machine
== bfd_mach_sparc_v8plusm8
737 || machine
== bfd_mach_sparc_v9
738 || machine
== bfd_mach_sparc_v9a
739 || machine
== bfd_mach_sparc_v9b
740 || machine
== bfd_mach_sparc_v9c
741 || machine
== bfd_mach_sparc_v9d
742 || machine
== bfd_mach_sparc_v9e
743 || machine
== bfd_mach_sparc_v9v
744 || machine
== bfd_mach_sparc_v9m
745 || machine
== bfd_mach_sparc_v9m8
)
746 arch_flags
= M_SPARC
;
747 else if (machine
== bfd_mach_sparc_sparclet
)
748 arch_flags
= M_SPARCLET
;
753 || machine
== bfd_mach_i386_i386
754 || machine
== bfd_mach_i386_i386_intel_syntax
)
767 case bfd_mach_mips3000
:
768 case bfd_mach_mips3900
:
769 arch_flags
= M_MIPS1
;
771 case bfd_mach_mips6000
:
772 arch_flags
= M_MIPS2
;
774 case bfd_mach_mips4000
:
775 case bfd_mach_mips4010
:
776 case bfd_mach_mips4100
:
777 case bfd_mach_mips4300
:
778 case bfd_mach_mips4400
:
779 case bfd_mach_mips4600
:
780 case bfd_mach_mips4650
:
781 case bfd_mach_mips8000
:
782 case bfd_mach_mips9000
:
783 case bfd_mach_mips10000
:
784 case bfd_mach_mips12000
:
785 case bfd_mach_mips14000
:
786 case bfd_mach_mips16000
:
787 case bfd_mach_mips16
:
788 case bfd_mach_mipsisa32
:
789 case bfd_mach_mipsisa32r2
:
790 case bfd_mach_mipsisa32r3
:
791 case bfd_mach_mipsisa32r5
:
792 case bfd_mach_mipsisa32r6
:
794 case bfd_mach_mipsisa64
:
795 case bfd_mach_mipsisa64r2
:
796 case bfd_mach_mipsisa64r3
:
797 case bfd_mach_mipsisa64r5
:
798 case bfd_mach_mipsisa64r6
:
799 case bfd_mach_mips_sb1
:
800 case bfd_mach_mips_xlr
:
801 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
802 arch_flags
= M_MIPS2
;
805 arch_flags
= M_UNKNOWN
;
813 case 0: arch_flags
= M_NS32532
; break;
814 case 32032: arch_flags
= M_NS32032
; break;
815 case 32532: arch_flags
= M_NS32532
; break;
816 default: arch_flags
= M_UNKNOWN
; break;
825 if (machine
== 0 || machine
== 255)
830 arch_flags
= M_UNKNOWN
;
833 if (arch_flags
!= M_UNKNOWN
)
841 aout_@var{size}_set_arch_mach
844 bfd_boolean aout_@var{size}_set_arch_mach,
846 enum bfd_architecture arch,
847 unsigned long machine);
850 Set the architecture and the machine of the BFD @var{abfd} to the
851 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
852 can support the architecture required.
856 NAME (aout
, set_arch_mach
) (bfd
*abfd
,
857 enum bfd_architecture arch
,
858 unsigned long machine
)
860 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
863 if (arch
!= bfd_arch_unknown
)
867 NAME (aout
, machine_type
) (arch
, machine
, &unknown
);
872 /* Determine the size of a relocation entry. */
877 obj_reloc_entry_size (abfd
) = RELOC_EXT_SIZE
;
880 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
884 return (*aout_backend_info (abfd
)->set_sizes
) (abfd
);
888 adjust_o_magic (bfd
*abfd
, struct internal_exec
*execp
)
890 file_ptr pos
= adata (abfd
).exec_bytes_size
;
895 obj_textsec (abfd
)->filepos
= pos
;
896 if (!obj_textsec (abfd
)->user_set_vma
)
897 obj_textsec (abfd
)->vma
= vma
;
899 vma
= obj_textsec (abfd
)->vma
;
901 pos
+= obj_textsec (abfd
)->size
;
902 vma
+= obj_textsec (abfd
)->size
;
905 if (!obj_datasec (abfd
)->user_set_vma
)
907 obj_textsec (abfd
)->size
+= pad
;
910 obj_datasec (abfd
)->vma
= vma
;
913 vma
= obj_datasec (abfd
)->vma
;
914 obj_datasec (abfd
)->filepos
= pos
;
915 pos
+= obj_datasec (abfd
)->size
;
916 vma
+= obj_datasec (abfd
)->size
;
919 if (!obj_bsssec (abfd
)->user_set_vma
)
921 obj_datasec (abfd
)->size
+= pad
;
924 obj_bsssec (abfd
)->vma
= vma
;
928 /* The VMA of the .bss section is set by the VMA of the
929 .data section plus the size of the .data section. We may
930 need to add padding bytes to make this true. */
931 pad
= obj_bsssec (abfd
)->vma
- vma
;
934 obj_datasec (abfd
)->size
+= pad
;
938 obj_bsssec (abfd
)->filepos
= pos
;
940 /* Fix up the exec header. */
941 execp
->a_text
= obj_textsec (abfd
)->size
;
942 execp
->a_data
= obj_datasec (abfd
)->size
;
943 execp
->a_bss
= obj_bsssec (abfd
)->size
;
944 N_SET_MAGIC (execp
, OMAGIC
);
948 adjust_z_magic (bfd
*abfd
, struct internal_exec
*execp
)
950 bfd_size_type data_pad
, text_pad
;
952 const struct aout_backend_data
*abdp
;
953 /* TRUE if text includes exec header. */
956 abdp
= aout_backend_info (abfd
);
960 && (abdp
->text_includes_header
961 || obj_aout_subformat (abfd
) == q_magic_format
));
962 obj_textsec (abfd
)->filepos
= (ztih
963 ? adata (abfd
).exec_bytes_size
964 : adata (abfd
).zmagic_disk_block_size
);
965 if (! obj_textsec (abfd
)->user_set_vma
)
967 /* ?? Do we really need to check for relocs here? */
968 obj_textsec (abfd
)->vma
= ((abfd
->flags
& HAS_RELOC
)
971 ? (abdp
->default_text_vma
972 + adata (abfd
).exec_bytes_size
)
973 : abdp
->default_text_vma
));
978 /* The .text section is being loaded at an unusual address. We
979 may need to pad it such that the .data section starts at a page
982 text_pad
= ((obj_textsec (abfd
)->filepos
- obj_textsec (abfd
)->vma
)
983 & (adata (abfd
).page_size
- 1));
985 text_pad
= ((- obj_textsec (abfd
)->vma
)
986 & (adata (abfd
).page_size
- 1));
989 /* Find start of data. */
992 text_end
= obj_textsec (abfd
)->filepos
+ obj_textsec (abfd
)->size
;
993 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
997 /* Note that if page_size == zmagic_disk_block_size, then
998 filepos == page_size, and this case is the same as the ztih
1000 text_end
= obj_textsec (abfd
)->size
;
1001 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
1002 text_end
+= obj_textsec (abfd
)->filepos
;
1004 obj_textsec (abfd
)->size
+= text_pad
;
1005 text_end
+= text_pad
;
1008 if (!obj_datasec (abfd
)->user_set_vma
)
1011 vma
= obj_textsec (abfd
)->vma
+ obj_textsec (abfd
)->size
;
1012 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1014 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
1016 asection
* text
= obj_textsec (abfd
);
1017 asection
* data
= obj_datasec (abfd
);
1019 text_pad
= data
->vma
- (text
->vma
+ text
->size
);
1020 /* Only pad the text section if the data
1021 section is going to be placed after it. */
1023 text
->size
+= text_pad
;
1025 obj_datasec (abfd
)->filepos
= (obj_textsec (abfd
)->filepos
1026 + obj_textsec (abfd
)->size
);
1028 /* Fix up exec header while we're at it. */
1029 execp
->a_text
= obj_textsec (abfd
)->size
;
1030 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
1031 execp
->a_text
+= adata (abfd
).exec_bytes_size
;
1032 if (obj_aout_subformat (abfd
) == q_magic_format
)
1033 N_SET_MAGIC (execp
, QMAGIC
);
1035 N_SET_MAGIC (execp
, ZMAGIC
);
1037 /* Spec says data section should be rounded up to page boundary. */
1038 obj_datasec (abfd
)->size
1039 = align_power (obj_datasec (abfd
)->size
,
1040 obj_bsssec (abfd
)->alignment_power
);
1041 execp
->a_data
= BFD_ALIGN (obj_datasec (abfd
)->size
,
1042 adata (abfd
).page_size
);
1043 data_pad
= execp
->a_data
- obj_datasec (abfd
)->size
;
1046 if (!obj_bsssec (abfd
)->user_set_vma
)
1047 obj_bsssec (abfd
)->vma
= (obj_datasec (abfd
)->vma
1048 + obj_datasec (abfd
)->size
);
1049 /* If the BSS immediately follows the data section and extra space
1050 in the page is left after the data section, fudge data
1051 in the header so that the bss section looks smaller by that
1052 amount. We'll start the bss section there, and lie to the OS.
1053 (Note that a linker script, as well as the above assignment,
1054 could have explicitly set the BSS vma to immediately follow
1055 the data section.) */
1056 if (align_power (obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->alignment_power
)
1057 == obj_datasec (abfd
)->vma
+ obj_datasec (abfd
)->size
)
1058 execp
->a_bss
= (data_pad
> obj_bsssec (abfd
)->size
1059 ? 0 : obj_bsssec (abfd
)->size
- data_pad
);
1061 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1065 adjust_n_magic (bfd
*abfd
, struct internal_exec
*execp
)
1067 file_ptr pos
= adata (abfd
).exec_bytes_size
;
1072 obj_textsec (abfd
)->filepos
= pos
;
1073 if (!obj_textsec (abfd
)->user_set_vma
)
1074 obj_textsec (abfd
)->vma
= vma
;
1076 vma
= obj_textsec (abfd
)->vma
;
1077 pos
+= obj_textsec (abfd
)->size
;
1078 vma
+= obj_textsec (abfd
)->size
;
1081 obj_datasec (abfd
)->filepos
= pos
;
1082 if (!obj_datasec (abfd
)->user_set_vma
)
1083 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1084 vma
= obj_datasec (abfd
)->vma
;
1086 /* Since BSS follows data immediately, see if it needs alignment. */
1087 vma
+= obj_datasec (abfd
)->size
;
1088 pad
= align_power (vma
, obj_bsssec (abfd
)->alignment_power
) - vma
;
1089 obj_datasec (abfd
)->size
+= pad
;
1090 pos
+= obj_datasec (abfd
)->size
;
1093 if (!obj_bsssec (abfd
)->user_set_vma
)
1094 obj_bsssec (abfd
)->vma
= vma
;
1096 vma
= obj_bsssec (abfd
)->vma
;
1098 /* Fix up exec header. */
1099 execp
->a_text
= obj_textsec (abfd
)->size
;
1100 execp
->a_data
= obj_datasec (abfd
)->size
;
1101 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1102 N_SET_MAGIC (execp
, NMAGIC
);
1106 NAME (aout
, adjust_sizes_and_vmas
) (bfd
*abfd
)
1108 struct internal_exec
*execp
= exec_hdr (abfd
);
1110 if (! NAME (aout
, make_sections
) (abfd
))
1113 if (adata (abfd
).magic
!= undecided_magic
)
1116 obj_textsec (abfd
)->size
=
1117 align_power (obj_textsec (abfd
)->size
,
1118 obj_textsec (abfd
)->alignment_power
);
1120 /* Rule (heuristic) for when to pad to a new page. Note that there
1121 are (at least) two ways demand-paged (ZMAGIC) files have been
1122 handled. Most Berkeley-based systems start the text segment at
1123 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1124 segment right after the exec header; the latter is counted in the
1125 text segment size, and is paged in by the kernel with the rest of
1128 /* This perhaps isn't the right way to do this, but made it simpler for me
1129 to understand enough to implement it. Better would probably be to go
1130 right from BFD flags to alignment/positioning characteristics. But the
1131 old code was sloppy enough about handling the flags, and had enough
1132 other magic, that it was a little hard for me to understand. I think
1133 I understand it better now, but I haven't time to do the cleanup this
1136 if (abfd
->flags
& D_PAGED
)
1137 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1138 adata (abfd
).magic
= z_magic
;
1139 else if (abfd
->flags
& WP_TEXT
)
1140 adata (abfd
).magic
= n_magic
;
1142 adata (abfd
).magic
= o_magic
;
1144 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1146 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1148 switch (adata (abfd
).magic
)
1150 case n_magic
: str
= "NMAGIC"; break;
1151 case o_magic
: str
= "OMAGIC"; break;
1152 case z_magic
: str
= "ZMAGIC"; break;
1157 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1158 obj_textsec (abfd
)->alignment_power
,
1159 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1160 obj_datasec (abfd
)->alignment_power
,
1161 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
,
1162 obj_bsssec (abfd
)->alignment_power
);
1166 switch (adata (abfd
).magic
)
1169 adjust_o_magic (abfd
, execp
);
1172 adjust_z_magic (abfd
, execp
);
1175 adjust_n_magic (abfd
, execp
);
1181 #ifdef BFD_AOUT_DEBUG
1182 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1183 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1184 obj_textsec (abfd
)->filepos
,
1185 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1186 obj_datasec (abfd
)->filepos
,
1187 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
);
1195 aout_@var{size}_new_section_hook
1198 bfd_boolean aout_@var{size}_new_section_hook,
1203 Called by the BFD in response to a @code{bfd_make_section}
1207 NAME (aout
, new_section_hook
) (bfd
*abfd
, asection
*newsect
)
1209 /* Align to double at least. */
1210 newsect
->alignment_power
= bfd_get_arch_info (abfd
)->section_align_power
;
1212 if (bfd_get_format (abfd
) == bfd_object
)
1214 if (obj_textsec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".text"))
1216 obj_textsec (abfd
)= newsect
;
1217 newsect
->target_index
= N_TEXT
;
1219 else if (obj_datasec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".data"))
1221 obj_datasec (abfd
) = newsect
;
1222 newsect
->target_index
= N_DATA
;
1224 else if (obj_bsssec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".bss"))
1226 obj_bsssec (abfd
) = newsect
;
1227 newsect
->target_index
= N_BSS
;
1231 /* We allow more than three sections internally. */
1232 return _bfd_generic_new_section_hook (abfd
, newsect
);
1236 NAME (aout
, set_section_contents
) (bfd
*abfd
,
1238 const void * location
,
1240 bfd_size_type count
)
1242 if (! abfd
->output_has_begun
)
1244 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
1248 if (section
== obj_bsssec (abfd
))
1250 bfd_set_error (bfd_error_no_contents
);
1254 if (section
!= obj_textsec (abfd
)
1255 && section
!= obj_datasec (abfd
))
1257 if (aout_section_merge_with_text_p (abfd
, section
))
1258 section
->filepos
= obj_textsec (abfd
)->filepos
+
1259 (section
->vma
- obj_textsec (abfd
)->vma
);
1263 /* xgettext:c-format */
1264 (_("%pB: can not represent section `%pA' in a.out object file format"),
1266 bfd_set_error (bfd_error_nonrepresentable_section
);
1273 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1274 || bfd_bwrite (location
, count
, abfd
) != count
)
1281 /* Read the external symbols from an a.out file. */
1284 aout_get_external_symbols (bfd
*abfd
)
1286 if (obj_aout_external_syms (abfd
) == NULL
)
1288 bfd_size_type count
;
1289 struct external_nlist
*syms
;
1290 bfd_size_type amt
= exec_hdr (abfd
)->a_syms
;
1292 count
= amt
/ EXTERNAL_NLIST_SIZE
;
1294 return TRUE
; /* Nothing to do. */
1297 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
), amt
,
1298 &obj_aout_sym_window (abfd
), TRUE
))
1300 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1302 /* We allocate using malloc to make the values easy to free
1303 later on. If we put them on the objalloc it might not be
1304 possible to free them. */
1305 syms
= (struct external_nlist
*) bfd_malloc (amt
);
1309 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1310 || bfd_bread (syms
, amt
, abfd
) != amt
)
1317 obj_aout_external_syms (abfd
) = syms
;
1318 obj_aout_external_sym_count (abfd
) = count
;
1321 if (obj_aout_external_strings (abfd
) == NULL
1322 && exec_hdr (abfd
)->a_syms
!= 0)
1324 unsigned char string_chars
[BYTES_IN_WORD
];
1325 bfd_size_type stringsize
;
1327 bfd_size_type amt
= BYTES_IN_WORD
;
1329 /* Get the size of the strings. */
1330 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1331 || bfd_bread ((void *) string_chars
, amt
, abfd
) != amt
)
1333 stringsize
= GET_WORD (abfd
, string_chars
);
1334 if (stringsize
== 0)
1336 else if (stringsize
< BYTES_IN_WORD
1337 || (size_t) stringsize
!= stringsize
)
1339 bfd_set_error (bfd_error_bad_value
);
1344 if (stringsize
>= BYTES_IN_WORD
)
1346 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
,
1347 &obj_aout_string_window (abfd
), TRUE
))
1349 strings
= (char *) obj_aout_string_window (abfd
).data
;
1354 strings
= (char *) bfd_malloc (stringsize
);
1355 if (strings
== NULL
)
1358 if (stringsize
>= BYTES_IN_WORD
)
1360 /* Keep the string count in the buffer for convenience
1361 when indexing with e_strx. */
1362 amt
= stringsize
- BYTES_IN_WORD
;
1363 if (bfd_bread (strings
+ BYTES_IN_WORD
, amt
, abfd
) != amt
)
1370 /* Ensure that a zero index yields an empty string. */
1373 strings
[stringsize
- 1] = 0;
1375 obj_aout_external_strings (abfd
) = strings
;
1376 obj_aout_external_string_size (abfd
) = stringsize
;
1382 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1383 and symbol->value fields of CACHE_PTR will be set from the a.out
1384 nlist structure. This function is responsible for setting
1385 symbol->flags and symbol->section, and adjusting symbol->value. */
1388 translate_from_native_sym_flags (bfd
*abfd
, aout_symbol_type
*cache_ptr
)
1392 if ((cache_ptr
->type
& N_STAB
) != 0
1393 || cache_ptr
->type
== N_FN
)
1397 /* This is a debugging symbol. */
1398 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1400 /* Work out the symbol section. */
1401 switch (cache_ptr
->type
& N_TYPE
)
1405 sec
= obj_textsec (abfd
);
1408 sec
= obj_datasec (abfd
);
1411 sec
= obj_bsssec (abfd
);
1415 sec
= bfd_abs_section_ptr
;
1419 cache_ptr
->symbol
.section
= sec
;
1420 cache_ptr
->symbol
.value
-= sec
->vma
;
1425 /* Get the default visibility. This does not apply to all types, so
1426 we just hold it in a local variable to use if wanted. */
1427 if ((cache_ptr
->type
& N_EXT
) == 0)
1428 visible
= BSF_LOCAL
;
1430 visible
= BSF_GLOBAL
;
1432 switch (cache_ptr
->type
)
1435 case N_ABS
: case N_ABS
| N_EXT
:
1436 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1437 cache_ptr
->symbol
.flags
= visible
;
1440 case N_UNDF
| N_EXT
:
1441 if (cache_ptr
->symbol
.value
!= 0)
1443 /* This is a common symbol. */
1444 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1445 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1449 cache_ptr
->symbol
.flags
= 0;
1450 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1454 case N_TEXT
: case N_TEXT
| N_EXT
:
1455 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1456 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1457 cache_ptr
->symbol
.flags
= visible
;
1460 /* N_SETV symbols used to represent set vectors placed in the
1461 data section. They are no longer generated. Theoretically,
1462 it was possible to extract the entries and combine them with
1463 new ones, although I don't know if that was ever actually
1464 done. Unless that feature is restored, treat them as data
1466 case N_SETV
: case N_SETV
| N_EXT
:
1467 case N_DATA
: case N_DATA
| N_EXT
:
1468 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1469 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1470 cache_ptr
->symbol
.flags
= visible
;
1473 case N_BSS
: case N_BSS
| N_EXT
:
1474 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1475 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1476 cache_ptr
->symbol
.flags
= visible
;
1479 case N_SETA
: case N_SETA
| N_EXT
:
1480 case N_SETT
: case N_SETT
| N_EXT
:
1481 case N_SETD
: case N_SETD
| N_EXT
:
1482 case N_SETB
: case N_SETB
| N_EXT
:
1484 /* This code is no longer needed. It used to be used to make
1485 the linker handle set symbols, but they are now handled in
1486 the add_symbols routine instead. */
1487 switch (cache_ptr
->type
& N_TYPE
)
1490 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1493 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1496 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1499 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1503 cache_ptr
->symbol
.flags
|= BSF_CONSTRUCTOR
;
1508 /* This symbol is the text of a warning message. The next
1509 symbol is the symbol to associate the warning with. If a
1510 reference is made to that symbol, a warning is issued. */
1511 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_WARNING
;
1512 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1515 case N_INDR
: case N_INDR
| N_EXT
:
1516 /* An indirect symbol. This consists of two symbols in a row.
1517 The first symbol is the name of the indirection. The second
1518 symbol is the name of the target. A reference to the first
1519 symbol becomes a reference to the second. */
1520 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_INDIRECT
| visible
;
1521 cache_ptr
->symbol
.section
= bfd_ind_section_ptr
;
1525 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1526 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1530 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1531 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1535 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1536 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1537 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1541 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1542 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1543 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1547 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1548 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1549 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1556 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1559 translate_to_native_sym_flags (bfd
*abfd
,
1561 struct external_nlist
*sym_pointer
)
1563 bfd_vma value
= cache_ptr
->value
;
1567 /* Mask out any existing type bits in case copying from one section
1569 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1571 sec
= bfd_get_section (cache_ptr
);
1576 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1579 /* xgettext:c-format */
1580 (_("%pB: can not represent section for symbol `%s' in a.out "
1581 "object file format"),
1583 cache_ptr
->name
!= NULL
? cache_ptr
->name
: _("*unknown*"));
1584 bfd_set_error (bfd_error_nonrepresentable_section
);
1588 if (sec
->output_section
!= NULL
)
1590 off
= sec
->output_offset
;
1591 sec
= sec
->output_section
;
1594 if (bfd_is_abs_section (sec
))
1595 sym_pointer
->e_type
[0] |= N_ABS
;
1596 else if (sec
== obj_textsec (abfd
))
1597 sym_pointer
->e_type
[0] |= N_TEXT
;
1598 else if (sec
== obj_datasec (abfd
))
1599 sym_pointer
->e_type
[0] |= N_DATA
;
1600 else if (sec
== obj_bsssec (abfd
))
1601 sym_pointer
->e_type
[0] |= N_BSS
;
1602 else if (bfd_is_und_section (sec
))
1603 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1604 else if (bfd_is_ind_section (sec
))
1605 sym_pointer
->e_type
[0] = N_INDR
;
1606 else if (bfd_is_com_section (sec
))
1607 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1610 if (aout_section_merge_with_text_p (abfd
, sec
))
1611 sym_pointer
->e_type
[0] |= N_TEXT
;
1615 /* xgettext:c-format */
1616 (_("%pB: can not represent section `%pA' in a.out object file format"),
1618 bfd_set_error (bfd_error_nonrepresentable_section
);
1623 /* Turn the symbol from section relative to absolute again. */
1624 value
+= sec
->vma
+ off
;
1626 if ((cache_ptr
->flags
& BSF_WARNING
) != 0)
1627 sym_pointer
->e_type
[0] = N_WARNING
;
1629 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1630 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1631 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1632 sym_pointer
->e_type
[0] |= N_EXT
;
1633 else if ((cache_ptr
->flags
& BSF_LOCAL
) != 0)
1634 sym_pointer
->e_type
[0] &= ~N_EXT
;
1636 if ((cache_ptr
->flags
& BSF_CONSTRUCTOR
) != 0)
1638 int type
= ((aout_symbol_type
*) cache_ptr
)->type
;
1642 case N_ABS
: type
= N_SETA
; break;
1643 case N_TEXT
: type
= N_SETT
; break;
1644 case N_DATA
: type
= N_SETD
; break;
1645 case N_BSS
: type
= N_SETB
; break;
1647 sym_pointer
->e_type
[0] = type
;
1650 if ((cache_ptr
->flags
& BSF_WEAK
) != 0)
1654 switch (sym_pointer
->e_type
[0] & N_TYPE
)
1657 case N_ABS
: type
= N_WEAKA
; break;
1658 case N_TEXT
: type
= N_WEAKT
; break;
1659 case N_DATA
: type
= N_WEAKD
; break;
1660 case N_BSS
: type
= N_WEAKB
; break;
1661 case N_UNDF
: type
= N_WEAKU
; break;
1663 sym_pointer
->e_type
[0] = type
;
1666 PUT_WORD (abfd
, value
, sym_pointer
->e_value
);
1671 /* Native-level interface to symbols. */
1674 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1676 bfd_size_type amt
= sizeof (aout_symbol_type
);
1678 aout_symbol_type
*new_symbol
= (aout_symbol_type
*) bfd_zalloc (abfd
, amt
);
1681 new_symbol
->symbol
.the_bfd
= abfd
;
1683 return &new_symbol
->symbol
;
1686 /* Translate a set of internal symbols into external symbols. */
1689 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1690 aout_symbol_type
*in
,
1691 struct external_nlist
*ext
,
1692 bfd_size_type count
,
1694 bfd_size_type strsize
,
1695 bfd_boolean dynamic
)
1697 struct external_nlist
*ext_end
;
1699 ext_end
= ext
+ count
;
1700 for (; ext
< ext_end
; ext
++, in
++)
1704 x
= GET_WORD (abfd
, ext
->e_strx
);
1705 in
->symbol
.the_bfd
= abfd
;
1707 /* For the normal symbols, the zero index points at the number
1708 of bytes in the string table but is to be interpreted as the
1709 null string. For the dynamic symbols, the number of bytes in
1710 the string table is stored in the __DYNAMIC structure and the
1711 zero index points at an actual string. */
1712 if (x
== 0 && ! dynamic
)
1713 in
->symbol
.name
= "";
1714 else if (x
< strsize
)
1715 in
->symbol
.name
= str
+ x
;
1719 (_("%pB: invalid string offset %" PRIu64
" >= %" PRIu64
),
1720 abfd
, (uint64_t) x
, (uint64_t) strsize
);
1721 bfd_set_error (bfd_error_bad_value
);
1725 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1726 in
->desc
= H_GET_16 (abfd
, ext
->e_desc
);
1727 in
->other
= H_GET_8 (abfd
, ext
->e_other
);
1728 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1729 in
->symbol
.udata
.p
= NULL
;
1731 if (! translate_from_native_sym_flags (abfd
, in
))
1735 in
->symbol
.flags
|= BSF_DYNAMIC
;
1741 /* We read the symbols into a buffer, which is discarded when this
1742 function exits. We read the strings into a buffer large enough to
1743 hold them all plus all the cached symbol entries. */
1746 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1748 struct external_nlist
*old_external_syms
;
1749 aout_symbol_type
*cached
;
1750 bfd_size_type cached_size
;
1752 /* If there's no work to be done, don't do any. */
1753 if (obj_aout_symbols (abfd
) != NULL
)
1756 old_external_syms
= obj_aout_external_syms (abfd
);
1758 if (! aout_get_external_symbols (abfd
))
1761 cached_size
= obj_aout_external_sym_count (abfd
);
1762 if (cached_size
== 0)
1763 return TRUE
; /* Nothing to do. */
1765 cached_size
*= sizeof (aout_symbol_type
);
1766 cached
= (aout_symbol_type
*) bfd_zmalloc (cached_size
);
1770 /* Convert from external symbol information to internal. */
1771 if (! (NAME (aout
, translate_symbol_table
)
1773 obj_aout_external_syms (abfd
),
1774 obj_aout_external_sym_count (abfd
),
1775 obj_aout_external_strings (abfd
),
1776 obj_aout_external_string_size (abfd
),
1783 bfd_get_symcount (abfd
) = obj_aout_external_sym_count (abfd
);
1785 obj_aout_symbols (abfd
) = cached
;
1787 /* It is very likely that anybody who calls this function will not
1788 want the external symbol information, so if it was allocated
1789 because of our call to aout_get_external_symbols, we free it up
1790 right away to save space. */
1791 if (old_external_syms
== NULL
1792 && obj_aout_external_syms (abfd
) != NULL
)
1795 bfd_free_window (&obj_aout_sym_window (abfd
));
1797 free (obj_aout_external_syms (abfd
));
1799 obj_aout_external_syms (abfd
) = NULL
;
1805 /* We use a hash table when writing out symbols so that we only write
1806 out a particular string once. This helps particularly when the
1807 linker writes out stabs debugging entries, because each different
1808 contributing object file tends to have many duplicate stabs
1811 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1812 if BFD_TRADITIONAL_FORMAT is set. */
1814 /* Get the index of a string in a strtab, adding it if it is not
1817 static inline bfd_size_type
1818 add_to_stringtab (bfd
*abfd
,
1819 struct bfd_strtab_hash
*tab
,
1824 bfd_size_type str_index
;
1826 /* An index of 0 always means the empty string. */
1827 if (str
== 0 || *str
== '\0')
1830 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1831 doesn't understand a hashed string table. */
1833 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1836 str_index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1838 if (str_index
!= (bfd_size_type
) -1)
1839 /* Add BYTES_IN_WORD to the return value to account for the
1840 space taken up by the string table size. */
1841 str_index
+= BYTES_IN_WORD
;
1846 /* Write out a strtab. ABFD is already at the right location in the
1850 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1852 bfd_byte buffer
[BYTES_IN_WORD
];
1853 bfd_size_type amt
= BYTES_IN_WORD
;
1855 /* The string table starts with the size. */
1856 PUT_WORD (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_WORD
, buffer
);
1857 if (bfd_bwrite ((void *) buffer
, amt
, abfd
) != amt
)
1860 return _bfd_stringtab_emit (abfd
, tab
);
1864 NAME (aout
, write_syms
) (bfd
*abfd
)
1866 unsigned int count
;
1867 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1868 struct bfd_strtab_hash
*strtab
;
1870 strtab
= _bfd_stringtab_init ();
1874 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1876 asymbol
*g
= generic
[count
];
1878 struct external_nlist nsp
;
1881 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1882 if (indx
== (bfd_size_type
) -1)
1884 PUT_WORD (abfd
, indx
, (bfd_byte
*) nsp
.e_strx
);
1886 if (bfd_asymbol_flavour (g
) == abfd
->xvec
->flavour
)
1888 H_PUT_16 (abfd
, aout_symbol (g
)->desc
, nsp
.e_desc
);
1889 H_PUT_8 (abfd
, aout_symbol (g
)->other
, nsp
.e_other
);
1890 H_PUT_8 (abfd
, aout_symbol (g
)->type
, nsp
.e_type
);
1894 H_PUT_16 (abfd
, 0, nsp
.e_desc
);
1895 H_PUT_8 (abfd
, 0, nsp
.e_other
);
1896 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1899 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1902 amt
= EXTERNAL_NLIST_SIZE
;
1903 if (bfd_bwrite ((void *) &nsp
, amt
, abfd
) != amt
)
1906 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1907 here, at the end. */
1911 if (! emit_stringtab (abfd
, strtab
))
1914 _bfd_stringtab_free (strtab
);
1919 _bfd_stringtab_free (strtab
);
1924 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1926 unsigned int counter
= 0;
1927 aout_symbol_type
*symbase
;
1929 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1932 for (symbase
= obj_aout_symbols (abfd
);
1933 counter
++ < bfd_get_symcount (abfd
);
1935 *(location
++) = (asymbol
*) (symbase
++);
1937 return bfd_get_symcount (abfd
);
1940 /* Standard reloc stuff. */
1941 /* Output standard relocation information to a file in target byte order. */
1943 extern void NAME (aout
, swap_std_reloc_out
)
1944 (bfd
*, arelent
*, struct reloc_std_external
*);
1947 NAME (aout
, swap_std_reloc_out
) (bfd
*abfd
,
1949 struct reloc_std_external
*natptr
)
1952 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1954 unsigned int r_length
;
1956 int r_baserel
, r_jmptable
, r_relative
;
1957 asection
*output_section
= sym
->section
->output_section
;
1959 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
1961 BFD_ASSERT (g
->howto
!= NULL
);
1962 r_length
= g
->howto
->size
; /* Size as a power of two. */
1963 r_pcrel
= (int) g
->howto
->pc_relative
; /* Relative to PC? */
1964 /* XXX This relies on relocs coming from a.out files. */
1965 r_baserel
= (g
->howto
->type
& 8) != 0;
1966 r_jmptable
= (g
->howto
->type
& 16) != 0;
1967 r_relative
= (g
->howto
->type
& 32) != 0;
1969 /* Name was clobbered by aout_write_syms to be symbol index. */
1971 /* If this relocation is relative to a symbol then set the
1972 r_index to the symbols index, and the r_extern bit.
1974 Absolute symbols can come in in two ways, either as an offset
1975 from the abs section, or as a symbol which has an abs value.
1976 check for that here. */
1978 if (bfd_is_com_section (output_section
)
1979 || bfd_is_abs_section (output_section
)
1980 || bfd_is_und_section (output_section
)
1981 /* PR gas/3041 a.out relocs against weak symbols
1982 must be treated as if they were against externs. */
1983 || (sym
->flags
& BSF_WEAK
))
1985 if (bfd_abs_section_ptr
->symbol
== sym
)
1987 /* Whoops, looked like an abs symbol, but is
1988 really an offset from the abs section. */
1994 /* Fill in symbol. */
1996 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2001 /* Just an ordinary section. */
2003 r_index
= output_section
->target_index
;
2006 /* Now the fun stuff. */
2007 if (bfd_header_big_endian (abfd
))
2009 natptr
->r_index
[0] = r_index
>> 16;
2010 natptr
->r_index
[1] = r_index
>> 8;
2011 natptr
->r_index
[2] = r_index
;
2012 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
2013 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
2014 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
2015 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
2016 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
2017 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
2021 natptr
->r_index
[2] = r_index
>> 16;
2022 natptr
->r_index
[1] = r_index
>> 8;
2023 natptr
->r_index
[0] = r_index
;
2024 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
2025 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
2026 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
2027 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
2028 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
2029 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
2033 /* Extended stuff. */
2034 /* Output extended relocation information to a file in target byte order. */
2036 extern void NAME (aout
, swap_ext_reloc_out
)
2037 (bfd
*, arelent
*, struct reloc_ext_external
*);
2040 NAME (aout
, swap_ext_reloc_out
) (bfd
*abfd
,
2042 struct reloc_ext_external
*natptr
)
2046 unsigned int r_type
;
2048 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2049 asection
*output_section
= sym
->section
->output_section
;
2051 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
2053 r_type
= (unsigned int) g
->howto
->type
;
2055 r_addend
= g
->addend
;
2056 if ((sym
->flags
& BSF_SECTION_SYM
) != 0)
2057 r_addend
+= (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2059 /* If this relocation is relative to a symbol then set the
2060 r_index to the symbols index, and the r_extern bit.
2062 Absolute symbols can come in in two ways, either as an offset
2063 from the abs section, or as a symbol which has an abs value.
2064 check for that here. */
2065 if (bfd_is_abs_section (bfd_get_section (sym
)))
2070 else if ((sym
->flags
& BSF_SECTION_SYM
) == 0)
2072 if (bfd_is_und_section (bfd_get_section (sym
))
2073 || (sym
->flags
& BSF_GLOBAL
) != 0)
2077 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2081 /* Just an ordinary section. */
2083 r_index
= output_section
->target_index
;
2086 /* Now the fun stuff. */
2087 if (bfd_header_big_endian (abfd
))
2089 natptr
->r_index
[0] = r_index
>> 16;
2090 natptr
->r_index
[1] = r_index
>> 8;
2091 natptr
->r_index
[2] = r_index
;
2092 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
2093 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
2097 natptr
->r_index
[2] = r_index
>> 16;
2098 natptr
->r_index
[1] = r_index
>> 8;
2099 natptr
->r_index
[0] = r_index
;
2100 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
2101 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
));
2104 PUT_WORD (abfd
, r_addend
, natptr
->r_addend
);
2107 /* BFD deals internally with all things based from the section they're
2108 in. so, something in 10 bytes into a text section with a base of
2109 50 would have a symbol (.text+10) and know .text vma was 50.
2111 Aout keeps all it's symbols based from zero, so the symbol would
2112 contain 60. This macro subs the base of each section from the value
2113 to give the true offset from the section. */
2115 #define MOVE_ADDRESS(ad) \
2118 /* Undefined symbol. */ \
2119 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2120 cache_ptr->addend = ad; \
2124 /* Defined, section relative. Replace symbol with pointer to \
2125 symbol which points to section. */ \
2129 case N_TEXT | N_EXT: \
2130 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2131 cache_ptr->addend = ad - su->textsec->vma; \
2134 case N_DATA | N_EXT: \
2135 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2136 cache_ptr->addend = ad - su->datasec->vma; \
2139 case N_BSS | N_EXT: \
2140 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2141 cache_ptr->addend = ad - su->bsssec->vma; \
2145 case N_ABS | N_EXT: \
2146 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2147 cache_ptr->addend = ad; \
2153 NAME (aout
, swap_ext_reloc_in
) (bfd
*abfd
,
2154 struct reloc_ext_external
*bytes
,
2157 bfd_size_type symcount
)
2159 unsigned int r_index
;
2161 unsigned int r_type
;
2162 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2164 cache_ptr
->address
= (GET_SWORD (abfd
, bytes
->r_address
));
2166 /* Now the fun stuff. */
2167 if (bfd_header_big_endian (abfd
))
2169 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2170 | ((unsigned int) bytes
->r_index
[1] << 8)
2171 | bytes
->r_index
[2]);
2172 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
2173 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
2174 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
2178 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2179 | ((unsigned int) bytes
->r_index
[1] << 8)
2180 | bytes
->r_index
[0]);
2181 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
2182 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
2183 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
2186 if (r_type
< TABLE_SIZE (howto_table_ext
))
2187 cache_ptr
->howto
= howto_table_ext
+ r_type
;
2189 cache_ptr
->howto
= NULL
;
2191 /* Base relative relocs are always against the symbol table,
2192 regardless of the setting of r_extern. r_extern just reflects
2193 whether the symbol the reloc is against is local or global. */
2194 if (r_type
== (unsigned int) RELOC_BASE10
2195 || r_type
== (unsigned int) RELOC_BASE13
2196 || r_type
== (unsigned int) RELOC_BASE22
)
2199 if (r_extern
&& r_index
> symcount
)
2201 /* We could arrange to return an error, but it might be useful
2202 to see the file even if it is bad. */
2207 MOVE_ADDRESS (GET_SWORD (abfd
, bytes
->r_addend
));
2211 NAME (aout
, swap_std_reloc_in
) (bfd
*abfd
,
2212 struct reloc_std_external
*bytes
,
2215 bfd_size_type symcount
)
2217 unsigned int r_index
;
2219 unsigned int r_length
;
2221 int r_baserel
, r_jmptable
, r_relative
;
2222 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2223 unsigned int howto_idx
;
2225 cache_ptr
->address
= H_GET_32 (abfd
, bytes
->r_address
);
2227 /* Now the fun stuff. */
2228 if (bfd_header_big_endian (abfd
))
2230 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2231 | ((unsigned int) bytes
->r_index
[1] << 8)
2232 | bytes
->r_index
[2]);
2233 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
2234 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
2235 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
2236 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
2237 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
2238 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
2239 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
2243 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2244 | ((unsigned int) bytes
->r_index
[1] << 8)
2245 | bytes
->r_index
[0]);
2246 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
2247 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
2248 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_LITTLE
));
2249 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_LITTLE
));
2250 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_LITTLE
));
2251 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
2252 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
2255 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
2256 + 16 * r_jmptable
+ 32 * r_relative
);
2257 if (howto_idx
< TABLE_SIZE (howto_table_std
))
2259 cache_ptr
->howto
= howto_table_std
+ howto_idx
;
2260 if (cache_ptr
->howto
->type
== (unsigned int) -1)
2261 cache_ptr
->howto
= NULL
;
2264 cache_ptr
->howto
= NULL
;
2266 /* Base relative relocs are always against the symbol table,
2267 regardless of the setting of r_extern. r_extern just reflects
2268 whether the symbol the reloc is against is local or global. */
2272 if (r_extern
&& r_index
>= symcount
)
2274 /* We could arrange to return an error, but it might be useful
2275 to see the file even if it is bad. FIXME: Of course this
2276 means that objdump -r *doesn't* see the actual reloc, and
2277 objcopy silently writes a different reloc. */
2285 /* Read and swap the relocs for a section. */
2288 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
2290 bfd_size_type count
;
2291 bfd_size_type reloc_size
;
2293 arelent
*reloc_cache
;
2295 unsigned int counter
= 0;
2299 if (asect
->relocation
)
2302 if (asect
->flags
& SEC_CONSTRUCTOR
)
2305 if (asect
== obj_datasec (abfd
))
2306 reloc_size
= exec_hdr (abfd
)->a_drsize
;
2307 else if (asect
== obj_textsec (abfd
))
2308 reloc_size
= exec_hdr (abfd
)->a_trsize
;
2309 else if (asect
== obj_bsssec (abfd
))
2313 bfd_set_error (bfd_error_invalid_operation
);
2317 if (reloc_size
== 0)
2318 return TRUE
; /* Nothing to be done. */
2320 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
2323 each_size
= obj_reloc_entry_size (abfd
);
2325 count
= reloc_size
/ each_size
;
2327 return TRUE
; /* Nothing to be done. */
2329 amt
= count
* sizeof (arelent
);
2330 reloc_cache
= (arelent
*) bfd_zmalloc (amt
);
2331 if (reloc_cache
== NULL
)
2334 relocs
= bfd_malloc (reloc_size
);
2341 if (bfd_bread (relocs
, reloc_size
, abfd
) != reloc_size
)
2348 cache_ptr
= reloc_cache
;
2349 if (each_size
== RELOC_EXT_SIZE
)
2351 struct reloc_ext_external
*rptr
= (struct reloc_ext_external
*) relocs
;
2353 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2354 MY_swap_ext_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2355 (bfd_size_type
) bfd_get_symcount (abfd
));
2359 struct reloc_std_external
*rptr
= (struct reloc_std_external
*) relocs
;
2361 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2362 MY_swap_std_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2363 (bfd_size_type
) bfd_get_symcount (abfd
));
2368 asect
->relocation
= reloc_cache
;
2369 asect
->reloc_count
= cache_ptr
- reloc_cache
;
2374 /* Write out a relocation section into an object file. */
2377 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
2380 unsigned char *native
, *natptr
;
2383 unsigned int count
= section
->reloc_count
;
2384 bfd_size_type natsize
;
2386 if (count
== 0 || section
->orelocation
== NULL
)
2389 each_size
= obj_reloc_entry_size (abfd
);
2390 natsize
= (bfd_size_type
) each_size
* count
;
2391 native
= (unsigned char *) bfd_zalloc (abfd
, natsize
);
2395 generic
= section
->orelocation
;
2397 if (each_size
== RELOC_EXT_SIZE
)
2399 for (natptr
= native
;
2401 --count
, natptr
+= each_size
, ++generic
)
2403 /* PR 20921: If the howto field has not been initialised then skip
2405 PR 20929: Similarly for the symbol field. */
2406 if ((*generic
)->howto
== NULL
2407 || (*generic
)->sym_ptr_ptr
== NULL
)
2409 bfd_set_error (bfd_error_invalid_operation
);
2410 _bfd_error_handler (_("\
2411 %pB: attempt to write out unknown reloc type"), abfd
);
2414 MY_swap_ext_reloc_out (abfd
, *generic
,
2415 (struct reloc_ext_external
*) natptr
);
2420 for (natptr
= native
;
2422 --count
, natptr
+= each_size
, ++generic
)
2424 if ((*generic
)->howto
== NULL
2425 || (*generic
)->sym_ptr_ptr
== NULL
)
2427 bfd_set_error (bfd_error_invalid_operation
);
2428 _bfd_error_handler (_("\
2429 %pB: attempt to write out unknown reloc type"), abfd
);
2432 MY_swap_std_reloc_out (abfd
, *generic
,
2433 (struct reloc_std_external
*) natptr
);
2437 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
2439 bfd_release (abfd
, native
);
2442 bfd_release (abfd
, native
);
2447 /* This is stupid. This function should be a boolean predicate. */
2450 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
2455 arelent
*tblptr
= section
->relocation
;
2458 if (section
== obj_bsssec (abfd
))
2464 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
) (abfd
, section
, symbols
)))
2467 if (section
->flags
& SEC_CONSTRUCTOR
)
2469 arelent_chain
*chain
= section
->constructor_chain
;
2470 for (count
= 0; count
< section
->reloc_count
; count
++)
2472 *relptr
++ = &chain
->relent
;
2473 chain
= chain
->next
;
2478 tblptr
= section
->relocation
;
2480 for (count
= 0; count
++ < section
->reloc_count
; )
2482 *relptr
++ = tblptr
++;
2487 return section
->reloc_count
;
2491 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
2493 if (bfd_get_format (abfd
) != bfd_object
)
2495 bfd_set_error (bfd_error_invalid_operation
);
2499 if (asect
->flags
& SEC_CONSTRUCTOR
)
2500 return sizeof (arelent
*) * (asect
->reloc_count
+ 1);
2502 if (asect
== obj_datasec (abfd
))
2503 return sizeof (arelent
*)
2504 * ((exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
))
2507 if (asect
== obj_textsec (abfd
))
2508 return sizeof (arelent
*)
2509 * ((exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
))
2512 if (asect
== obj_bsssec (abfd
))
2513 return sizeof (arelent
*);
2515 if (asect
== obj_bsssec (abfd
))
2518 bfd_set_error (bfd_error_invalid_operation
);
2523 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2525 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2528 return (bfd_get_symcount (abfd
)+1) * (sizeof (aout_symbol_type
*));
2532 NAME (aout
, get_lineno
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2533 asymbol
*ignore_symbol ATTRIBUTE_UNUSED
)
2539 NAME (aout
, get_symbol_info
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2543 bfd_symbol_info (symbol
, ret
);
2545 if (ret
->type
== '?')
2547 int type_code
= aout_symbol (symbol
)->type
& 0xff;
2548 const char *stab_name
= bfd_get_stab_name (type_code
);
2549 static char buf
[10];
2551 if (stab_name
== NULL
)
2553 sprintf (buf
, "(%d)", type_code
);
2557 ret
->stab_type
= type_code
;
2558 ret
->stab_other
= (unsigned) (aout_symbol (symbol
)->other
& 0xff);
2559 ret
->stab_desc
= (unsigned) (aout_symbol (symbol
)->desc
& 0xffff);
2560 ret
->stab_name
= stab_name
;
2565 NAME (aout
, print_symbol
) (bfd
*abfd
,
2568 bfd_print_symbol_type how
)
2570 FILE *file
= (FILE *)afile
;
2574 case bfd_print_symbol_name
:
2576 fprintf (file
,"%s", symbol
->name
);
2578 case bfd_print_symbol_more
:
2579 fprintf (file
,"%4x %2x %2x",
2580 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2581 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2582 (unsigned) (aout_symbol (symbol
)->type
));
2584 case bfd_print_symbol_all
:
2586 const char *section_name
= symbol
->section
->name
;
2588 bfd_print_symbol_vandf (abfd
, (void *)file
, symbol
);
2590 fprintf (file
," %-5s %04x %02x %02x",
2592 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2593 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2594 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2596 fprintf (file
," %s", symbol
->name
);
2602 /* If we don't have to allocate more than 1MB to hold the generic
2603 symbols, we use the generic minisymbol methord: it's faster, since
2604 it only translates the symbols once, not multiple times. */
2605 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2607 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2608 symbols. The minisymbol_to_symbol function translates these into
2609 BFD asymbol structures. */
2612 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2613 bfd_boolean dynamic
,
2615 unsigned int *sizep
)
2618 /* We could handle the dynamic symbols here as well, but it's
2619 easier to hand them off. */
2620 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2622 if (! aout_get_external_symbols (abfd
))
2625 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2626 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2628 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2630 /* By passing the external symbols back from this routine, we are
2631 giving up control over the memory block. Clear
2632 obj_aout_external_syms, so that we do not try to free it
2634 obj_aout_external_syms (abfd
) = NULL
;
2636 *sizep
= EXTERNAL_NLIST_SIZE
;
2637 return obj_aout_external_sym_count (abfd
);
2640 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2641 unmodified a.out symbol. The SYM argument is a structure returned
2642 by bfd_make_empty_symbol, which we fill in here. */
2645 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2646 bfd_boolean dynamic
,
2647 const void * minisym
,
2651 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2652 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2654 memset (sym
, 0, sizeof (aout_symbol_type
));
2656 /* We call translate_symbol_table to translate a single symbol. */
2657 if (! (NAME (aout
, translate_symbol_table
)
2659 (aout_symbol_type
*) sym
,
2660 (struct external_nlist
*) minisym
,
2662 obj_aout_external_strings (abfd
),
2663 obj_aout_external_string_size (abfd
),
2670 /* Provided a BFD, a section and an offset into the section, calculate
2671 and return the name of the source file and the line nearest to the
2675 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2679 const char **filename_ptr
,
2680 const char **functionname_ptr
,
2681 unsigned int *line_ptr
,
2682 unsigned int *disriminator_ptr
)
2684 /* Run down the file looking for the filename, function and linenumber. */
2686 const char *directory_name
= NULL
;
2687 const char *main_file_name
= NULL
;
2688 const char *current_file_name
= NULL
;
2689 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2690 const char *line_directory_name
= NULL
; /* Value of directory_name at line number. */
2691 bfd_vma low_line_vma
= 0;
2692 bfd_vma low_func_vma
= 0;
2694 bfd_size_type filelen
, funclen
;
2697 *filename_ptr
= abfd
->filename
;
2698 *functionname_ptr
= NULL
;
2700 if (disriminator_ptr
)
2701 *disriminator_ptr
= 0;
2703 if (symbols
!= NULL
)
2705 for (p
= symbols
; *p
; p
++)
2707 aout_symbol_type
*q
= (aout_symbol_type
*) (*p
);
2712 /* If this looks like a file name symbol, and it comes after
2713 the line number we have found so far, but before the
2714 offset, then we have probably not found the right line
2716 if (q
->symbol
.value
<= offset
2717 && ((q
->symbol
.value
> low_line_vma
2718 && (line_file_name
!= NULL
2720 || (q
->symbol
.value
> low_func_vma
2723 const char *symname
;
2725 symname
= q
->symbol
.name
;
2728 && strlen (symname
) > 2
2729 && strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2731 if (q
->symbol
.value
> low_line_vma
)
2734 line_file_name
= NULL
;
2736 if (q
->symbol
.value
> low_func_vma
)
2743 /* If this symbol is less than the offset, but greater than
2744 the line number we have found so far, then we have not
2745 found the right line number. */
2746 if (q
->symbol
.value
<= offset
)
2748 if (q
->symbol
.value
> low_line_vma
)
2751 line_file_name
= NULL
;
2753 if (q
->symbol
.value
> low_func_vma
)
2757 main_file_name
= current_file_name
= q
->symbol
.name
;
2758 /* Look ahead to next symbol to check if that too is an N_SO. */
2762 q
= (aout_symbol_type
*) (*p
);
2763 if (q
->type
!= (int)N_SO
)
2766 /* Found a second N_SO First is directory; second is filename. */
2767 directory_name
= current_file_name
;
2768 main_file_name
= current_file_name
= q
->symbol
.name
;
2769 if (obj_textsec (abfd
) != section
)
2773 current_file_name
= q
->symbol
.name
;
2780 /* We'll keep this if it resolves nearer than the one we have
2782 if (q
->symbol
.value
>= low_line_vma
2783 && q
->symbol
.value
<= offset
)
2785 *line_ptr
= q
->desc
;
2786 low_line_vma
= q
->symbol
.value
;
2787 line_file_name
= current_file_name
;
2788 line_directory_name
= directory_name
;
2793 /* We'll keep this if it is nearer than the one we have already. */
2794 if (q
->symbol
.value
>= low_func_vma
2795 && q
->symbol
.value
<= offset
)
2797 low_func_vma
= q
->symbol
.value
;
2798 func
= (asymbol
*)q
;
2800 else if (q
->symbol
.value
> offset
)
2811 main_file_name
= line_file_name
;
2812 directory_name
= line_directory_name
;
2815 if (main_file_name
== NULL
2816 || IS_ABSOLUTE_PATH (main_file_name
)
2817 || directory_name
== NULL
)
2820 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2825 funclen
= strlen (bfd_asymbol_name (func
));
2827 if (adata (abfd
).line_buf
!= NULL
)
2828 free (adata (abfd
).line_buf
);
2830 if (filelen
+ funclen
== 0)
2831 adata (abfd
).line_buf
= buf
= NULL
;
2834 buf
= (char *) bfd_malloc (filelen
+ funclen
+ 3);
2835 adata (abfd
).line_buf
= buf
;
2840 if (main_file_name
!= NULL
)
2842 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2843 *filename_ptr
= main_file_name
;
2847 /* PR binutils/20891: In a corrupt input file both
2848 main_file_name and directory_name can be empty... */
2849 * filename_ptr
= NULL
;
2852 snprintf (buf
, filelen
+ 1, "%s%s", directory_name
,
2854 *filename_ptr
= buf
;
2862 const char *function
= func
->name
;
2867 /* PR binutils/20892: In a corrupt input file func can be empty. */
2868 * functionname_ptr
= NULL
;
2871 /* The caller expects a symbol name. We actually have a
2872 function name, without the leading underscore. Put the
2873 underscore back in, so that the caller gets a symbol name. */
2874 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2875 strcpy (buf
, function
);
2878 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2879 strcpy (buf
+ 1, function
);
2881 /* Have to remove : stuff. */
2882 colon
= strchr (buf
, ':');
2885 *functionname_ptr
= buf
;
2892 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2893 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2895 return adata (abfd
).exec_bytes_size
;
2898 /* Free all information we have cached for this BFD. We can always
2899 read it again later if we need it. */
2902 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2906 if (bfd_get_format (abfd
) != bfd_object
2907 || abfd
->tdata
.aout_data
== NULL
)
2910 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2911 BFCI_FREE (obj_aout_symbols (abfd
));
2913 obj_aout_external_syms (abfd
) = 0;
2914 bfd_free_window (&obj_aout_sym_window (abfd
));
2915 bfd_free_window (&obj_aout_string_window (abfd
));
2916 obj_aout_external_strings (abfd
) = 0;
2918 BFCI_FREE (obj_aout_external_syms (abfd
));
2919 BFCI_FREE (obj_aout_external_strings (abfd
));
2921 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2922 BFCI_FREE (o
->relocation
);
2928 /* a.out link code. */
2930 /* Routine to create an entry in an a.out link hash table. */
2932 struct bfd_hash_entry
*
2933 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2934 struct bfd_hash_table
*table
,
2937 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2939 /* Allocate the structure if it has not already been allocated by a
2942 ret
= (struct aout_link_hash_entry
*) bfd_hash_allocate (table
,
2947 /* Call the allocation method of the superclass. */
2948 ret
= ((struct aout_link_hash_entry
*)
2949 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2953 /* Set local fields. */
2954 ret
->written
= FALSE
;
2958 return (struct bfd_hash_entry
*) ret
;
2961 /* Initialize an a.out link hash table. */
2964 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2966 struct bfd_hash_entry
*(*newfunc
)
2967 (struct bfd_hash_entry
*, struct bfd_hash_table
*,
2969 unsigned int entsize
)
2971 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2974 /* Create an a.out link hash table. */
2976 struct bfd_link_hash_table
*
2977 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2979 struct aout_link_hash_table
*ret
;
2980 bfd_size_type amt
= sizeof (* ret
);
2982 ret
= (struct aout_link_hash_table
*) bfd_malloc (amt
);
2986 if (!NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2987 NAME (aout
, link_hash_newfunc
),
2988 sizeof (struct aout_link_hash_entry
)))
2996 /* Add all symbols from an object file to the hash table. */
2999 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3001 bfd_boolean (*add_one_symbol
)
3002 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
3003 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
3004 struct bfd_link_hash_entry
**);
3005 struct external_nlist
*syms
;
3006 bfd_size_type sym_count
;
3009 struct aout_link_hash_entry
**sym_hash
;
3010 struct external_nlist
*p
;
3011 struct external_nlist
*pend
;
3014 syms
= obj_aout_external_syms (abfd
);
3015 sym_count
= obj_aout_external_sym_count (abfd
);
3016 strings
= obj_aout_external_strings (abfd
);
3017 if (info
->keep_memory
)
3022 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
3024 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
3025 (abfd
, info
, &syms
, &sym_count
, &strings
)))
3030 return TRUE
; /* Nothing to do. */
3032 /* We keep a list of the linker hash table entries that correspond
3033 to particular symbols. We could just look them up in the hash
3034 table, but keeping the list is more efficient. Perhaps this
3035 should be conditional on info->keep_memory. */
3036 amt
= sym_count
* sizeof (struct aout_link_hash_entry
*);
3037 sym_hash
= (struct aout_link_hash_entry
**) bfd_alloc (abfd
, amt
);
3038 if (sym_hash
== NULL
)
3040 obj_aout_sym_hashes (abfd
) = sym_hash
;
3042 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
3043 if (add_one_symbol
== NULL
)
3044 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
3047 pend
= p
+ sym_count
;
3048 for (; p
< pend
; p
++, sym_hash
++)
3059 type
= H_GET_8 (abfd
, p
->e_type
);
3061 /* Ignore debugging symbols. */
3062 if ((type
& N_STAB
) != 0)
3065 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3066 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3068 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3069 value
= GET_WORD (abfd
, p
->e_value
);
3086 /* Ignore symbols that are not externally visible. */
3089 /* Ignore local indirect symbol. */
3094 case N_UNDF
| N_EXT
:
3097 section
= bfd_und_section_ptr
;
3101 section
= bfd_com_section_ptr
;
3104 section
= bfd_abs_section_ptr
;
3106 case N_TEXT
| N_EXT
:
3107 section
= obj_textsec (abfd
);
3108 value
-= bfd_get_section_vma (abfd
, section
);
3110 case N_DATA
| N_EXT
:
3111 case N_SETV
| N_EXT
:
3112 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3113 translate_from_native_sym_flags. */
3114 section
= obj_datasec (abfd
);
3115 value
-= bfd_get_section_vma (abfd
, section
);
3118 section
= obj_bsssec (abfd
);
3119 value
-= bfd_get_section_vma (abfd
, section
);
3121 case N_INDR
| N_EXT
:
3122 /* An indirect symbol. The next symbol is the symbol
3123 which this one really is. */
3124 /* See PR 20925 for a reproducer. */
3128 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3129 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3131 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3132 section
= bfd_ind_section_ptr
;
3133 flags
|= BSF_INDIRECT
;
3135 case N_COMM
| N_EXT
:
3136 section
= bfd_com_section_ptr
;
3138 case N_SETA
: case N_SETA
| N_EXT
:
3139 section
= bfd_abs_section_ptr
;
3140 flags
|= BSF_CONSTRUCTOR
;
3142 case N_SETT
: case N_SETT
| N_EXT
:
3143 section
= obj_textsec (abfd
);
3144 flags
|= BSF_CONSTRUCTOR
;
3145 value
-= bfd_get_section_vma (abfd
, section
);
3147 case N_SETD
: case N_SETD
| N_EXT
:
3148 section
= obj_datasec (abfd
);
3149 flags
|= BSF_CONSTRUCTOR
;
3150 value
-= bfd_get_section_vma (abfd
, section
);
3152 case N_SETB
: case N_SETB
| N_EXT
:
3153 section
= obj_bsssec (abfd
);
3154 flags
|= BSF_CONSTRUCTOR
;
3155 value
-= bfd_get_section_vma (abfd
, section
);
3158 /* A warning symbol. The next symbol is the one to warn
3159 about. If there is no next symbol, just look away. */
3164 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3165 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3167 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3168 section
= bfd_und_section_ptr
;
3169 flags
|= BSF_WARNING
;
3172 section
= bfd_und_section_ptr
;
3176 section
= bfd_abs_section_ptr
;
3180 section
= obj_textsec (abfd
);
3181 value
-= bfd_get_section_vma (abfd
, section
);
3185 section
= obj_datasec (abfd
);
3186 value
-= bfd_get_section_vma (abfd
, section
);
3190 section
= obj_bsssec (abfd
);
3191 value
-= bfd_get_section_vma (abfd
, section
);
3196 if (! ((*add_one_symbol
)
3197 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
3198 (struct bfd_link_hash_entry
**) sym_hash
)))
3201 /* Restrict the maximum alignment of a common symbol based on
3202 the architecture, since a.out has no way to represent
3203 alignment requirements of a section in a .o file. FIXME:
3204 This isn't quite right: it should use the architecture of the
3205 output file, not the input files. */
3206 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3207 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3208 bfd_get_arch_info (abfd
)->section_align_power
))
3209 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3210 bfd_get_arch_info (abfd
)->section_align_power
;
3212 /* If this is a set symbol, and we are not building sets, then
3213 it is possible for the hash entry to not have been set. In
3214 such a case, treat the symbol as not globally defined. */
3215 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3217 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3221 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3228 /* Free up the internal symbols read from an a.out file. */
3231 aout_link_free_symbols (bfd
*abfd
)
3233 if (obj_aout_external_syms (abfd
) != NULL
)
3236 bfd_free_window (&obj_aout_sym_window (abfd
));
3238 free ((void *) obj_aout_external_syms (abfd
));
3240 obj_aout_external_syms (abfd
) = NULL
;
3242 if (obj_aout_external_strings (abfd
) != NULL
)
3245 bfd_free_window (&obj_aout_string_window (abfd
));
3247 free ((void *) obj_aout_external_strings (abfd
));
3249 obj_aout_external_strings (abfd
) = NULL
;
3254 /* Add symbols from an a.out object file. */
3257 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3259 if (! aout_get_external_symbols (abfd
))
3261 if (! aout_link_add_symbols (abfd
, info
))
3263 if (! info
->keep_memory
)
3265 if (! aout_link_free_symbols (abfd
))
3271 /* Look through the internal symbols to see if this object file should
3272 be included in the link. We should include this object file if it
3273 defines any symbols which are currently undefined. If this object
3274 file defines a common symbol, then we may adjust the size of the
3275 known symbol but we do not include the object file in the link
3276 (unless there is some other reason to include it). */
3279 aout_link_check_ar_symbols (bfd
*abfd
,
3280 struct bfd_link_info
*info
,
3281 bfd_boolean
*pneeded
,
3284 struct external_nlist
*p
;
3285 struct external_nlist
*pend
;
3290 /* Look through all the symbols. */
3291 p
= obj_aout_external_syms (abfd
);
3292 pend
= p
+ obj_aout_external_sym_count (abfd
);
3293 strings
= obj_aout_external_strings (abfd
);
3294 for (; p
< pend
; p
++)
3296 int type
= H_GET_8 (abfd
, p
->e_type
);
3298 struct bfd_link_hash_entry
*h
;
3300 /* Ignore symbols that are not externally visible. This is an
3301 optimization only, as we check the type more thoroughly
3303 if (((type
& N_EXT
) == 0
3304 || (type
& N_STAB
) != 0
3311 if (type
== N_WARNING
3317 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3318 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
3320 /* We are only interested in symbols that are currently
3321 undefined or common. */
3323 || (h
->type
!= bfd_link_hash_undefined
3324 && h
->type
!= bfd_link_hash_common
))
3326 if (type
== (N_INDR
| N_EXT
))
3331 if (type
== (N_TEXT
| N_EXT
)
3332 || type
== (N_DATA
| N_EXT
)
3333 || type
== (N_BSS
| N_EXT
)
3334 || type
== (N_ABS
| N_EXT
)
3335 || type
== (N_INDR
| N_EXT
))
3337 /* This object file defines this symbol. We must link it
3338 in. This is true regardless of whether the current
3339 definition of the symbol is undefined or common.
3341 If the current definition is common, we have a case in
3342 which we have already seen an object file including:
3344 and this object file from the archive includes:
3346 In such a case, whether to include this object is target
3347 dependant for backward compatibility.
3349 FIXME: The SunOS 4.1.3 linker will pull in the archive
3350 element if the symbol is defined in the .data section,
3351 but not if it is defined in the .text section. That
3352 seems a bit crazy to me, and it has not been implemented
3353 yet. However, it might be correct. */
3354 if (h
->type
== bfd_link_hash_common
)
3358 switch (info
->common_skip_ar_symbols
)
3360 case bfd_link_common_skip_none
:
3362 case bfd_link_common_skip_text
:
3363 skip
= (type
== (N_TEXT
| N_EXT
));
3365 case bfd_link_common_skip_data
:
3366 skip
= (type
== (N_DATA
| N_EXT
));
3368 case bfd_link_common_skip_all
:
3377 if (!(*info
->callbacks
3378 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3384 if (type
== (N_UNDF
| N_EXT
))
3388 value
= GET_WORD (abfd
, p
->e_value
);
3391 /* This symbol is common in the object from the archive
3393 if (h
->type
== bfd_link_hash_undefined
)
3398 symbfd
= h
->u
.undef
.abfd
;
3401 /* This symbol was created as undefined from
3402 outside BFD. We assume that we should link
3403 in the object file. This is done for the -u
3404 option in the linker. */
3405 if (!(*info
->callbacks
3406 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3411 /* Turn the current link symbol into a common
3412 symbol. It is already on the undefs list. */
3413 h
->type
= bfd_link_hash_common
;
3414 h
->u
.c
.p
= (struct bfd_link_hash_common_entry
*)
3415 bfd_hash_allocate (&info
->hash
->table
,
3416 sizeof (struct bfd_link_hash_common_entry
));
3417 if (h
->u
.c
.p
== NULL
)
3420 h
->u
.c
.size
= value
;
3422 /* FIXME: This isn't quite right. The maximum
3423 alignment of a common symbol should be set by the
3424 architecture of the output file, not of the input
3426 power
= bfd_log2 (value
);
3427 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3428 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3429 h
->u
.c
.p
->alignment_power
= power
;
3431 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3436 /* Adjust the size of the common symbol if
3438 if (value
> h
->u
.c
.size
)
3439 h
->u
.c
.size
= value
;
3449 /* This symbol is weak but defined. We must pull it in if
3450 the current link symbol is undefined, but we don't want
3451 it if the current link symbol is common. */
3452 if (h
->type
== bfd_link_hash_undefined
)
3454 if (!(*info
->callbacks
3455 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3463 /* We do not need this object file. */
3466 /* Check a single archive element to see if we need to include it in
3467 the link. *PNEEDED is set according to whether this element is
3468 needed in the link or not. This is called from
3469 _bfd_generic_link_add_archive_symbols. */
3472 aout_link_check_archive_element (bfd
*abfd
,
3473 struct bfd_link_info
*info
,
3474 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
3475 const char *name ATTRIBUTE_UNUSED
,
3476 bfd_boolean
*pneeded
)
3481 if (!aout_get_external_symbols (abfd
))
3485 if (!aout_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
3491 /* Potentially, the add_archive_element hook may have set a
3492 substitute BFD for us. */
3495 if (!info
->keep_memory
3496 && !aout_link_free_symbols (oldbfd
))
3498 if (!aout_get_external_symbols (abfd
))
3501 if (!aout_link_add_symbols (abfd
, info
))
3505 if (!info
->keep_memory
|| !needed
)
3507 if (!aout_link_free_symbols (abfd
))
3514 /* Given an a.out BFD, add symbols to the global hash table as
3518 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
3520 switch (bfd_get_format (abfd
))
3523 return aout_link_add_object_symbols (abfd
, info
);
3525 return _bfd_generic_link_add_archive_symbols
3526 (abfd
, info
, aout_link_check_archive_element
);
3528 bfd_set_error (bfd_error_wrong_format
);
3533 /* A hash table used for header files with N_BINCL entries. */
3535 struct aout_link_includes_table
3537 struct bfd_hash_table root
;
3540 /* A linked list of totals that we have found for a particular header
3543 struct aout_link_includes_totals
3545 struct aout_link_includes_totals
*next
;
3549 /* An entry in the header file hash table. */
3551 struct aout_link_includes_entry
3553 struct bfd_hash_entry root
;
3554 /* List of totals we have found for this file. */
3555 struct aout_link_includes_totals
*totals
;
3558 /* Look up an entry in an the header file hash table. */
3560 #define aout_link_includes_lookup(table, string, create, copy) \
3561 ((struct aout_link_includes_entry *) \
3562 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3564 /* During the final link step we need to pass around a bunch of
3565 information, so we do it in an instance of this structure. */
3567 struct aout_final_link_info
3569 /* General link information. */
3570 struct bfd_link_info
*info
;
3573 /* Reloc file positions. */
3574 file_ptr treloff
, dreloff
;
3575 /* File position of symbols. */
3578 struct bfd_strtab_hash
*strtab
;
3579 /* Header file hash table. */
3580 struct aout_link_includes_table includes
;
3581 /* A buffer large enough to hold the contents of any section. */
3583 /* A buffer large enough to hold the relocs of any section. */
3585 /* A buffer large enough to hold the symbol map of any input BFD. */
3587 /* A buffer large enough to hold output symbols of any input BFD. */
3588 struct external_nlist
*output_syms
;
3591 /* The function to create a new entry in the header file hash table. */
3593 static struct bfd_hash_entry
*
3594 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
3595 struct bfd_hash_table
*table
,
3598 struct aout_link_includes_entry
*ret
=
3599 (struct aout_link_includes_entry
*) entry
;
3601 /* Allocate the structure if it has not already been allocated by a
3604 ret
= (struct aout_link_includes_entry
*)
3605 bfd_hash_allocate (table
, sizeof (* ret
));
3609 /* Call the allocation method of the superclass. */
3610 ret
= ((struct aout_link_includes_entry
*)
3611 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3614 /* Set local fields. */
3618 return (struct bfd_hash_entry
*) ret
;
3621 /* Write out a symbol that was not associated with an a.out input
3625 aout_link_write_other_symbol (struct bfd_hash_entry
*bh
, void *data
)
3627 struct aout_link_hash_entry
*h
= (struct aout_link_hash_entry
*) bh
;
3628 struct aout_final_link_info
*flaginfo
= (struct aout_final_link_info
*) data
;
3632 struct external_nlist outsym
;
3636 if (h
->root
.type
== bfd_link_hash_warning
)
3638 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
3639 if (h
->root
.type
== bfd_link_hash_new
)
3643 output_bfd
= flaginfo
->output_bfd
;
3645 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
3647 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
3648 (output_bfd
, flaginfo
->info
, h
)))
3650 /* FIXME: No way to handle errors. */
3660 /* An indx of -2 means the symbol must be written. */
3662 && (flaginfo
->info
->strip
== strip_all
3663 || (flaginfo
->info
->strip
== strip_some
3664 && bfd_hash_lookup (flaginfo
->info
->keep_hash
, h
->root
.root
.string
,
3665 FALSE
, FALSE
) == NULL
)))
3668 switch (h
->root
.type
)
3671 case bfd_link_hash_warning
:
3673 /* Avoid variable not initialized warnings. */
3675 case bfd_link_hash_new
:
3676 /* This can happen for set symbols when sets are not being
3679 case bfd_link_hash_undefined
:
3680 type
= N_UNDF
| N_EXT
;
3683 case bfd_link_hash_defined
:
3684 case bfd_link_hash_defweak
:
3688 sec
= h
->root
.u
.def
.section
->output_section
;
3689 BFD_ASSERT (bfd_is_abs_section (sec
)
3690 || sec
->owner
== output_bfd
);
3691 if (sec
== obj_textsec (output_bfd
))
3692 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
3693 else if (sec
== obj_datasec (output_bfd
))
3694 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
3695 else if (sec
== obj_bsssec (output_bfd
))
3696 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
3698 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
3700 val
= (h
->root
.u
.def
.value
3702 + h
->root
.u
.def
.section
->output_offset
);
3705 case bfd_link_hash_common
:
3706 type
= N_UNDF
| N_EXT
;
3707 val
= h
->root
.u
.c
.size
;
3709 case bfd_link_hash_undefweak
:
3713 case bfd_link_hash_indirect
:
3714 /* We ignore these symbols, since the indirected symbol is
3715 already in the hash table. */
3719 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
3720 H_PUT_8 (output_bfd
, 0, outsym
.e_other
);
3721 H_PUT_16 (output_bfd
, 0, outsym
.e_desc
);
3722 indx
= add_to_stringtab (output_bfd
, flaginfo
->strtab
, h
->root
.root
.string
,
3724 if (indx
== - (bfd_size_type
) 1)
3725 /* FIXME: No way to handle errors. */
3728 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3729 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3731 amt
= EXTERNAL_NLIST_SIZE
;
3732 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0
3733 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3734 /* FIXME: No way to handle errors. */
3737 flaginfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
3738 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3739 ++obj_aout_external_sym_count (output_bfd
);
3744 /* Handle a link order which is supposed to generate a reloc. */
3747 aout_link_reloc_link_order (struct aout_final_link_info
*flaginfo
,
3749 struct bfd_link_order
*p
)
3751 struct bfd_link_order_reloc
*pr
;
3754 reloc_howto_type
*howto
;
3755 file_ptr
*reloff_ptr
= NULL
;
3756 struct reloc_std_external srel
;
3757 struct reloc_ext_external erel
;
3763 if (p
->type
== bfd_section_reloc_link_order
)
3766 if (bfd_is_abs_section (pr
->u
.section
))
3767 r_index
= N_ABS
| N_EXT
;
3770 BFD_ASSERT (pr
->u
.section
->owner
== flaginfo
->output_bfd
);
3771 r_index
= pr
->u
.section
->target_index
;
3776 struct aout_link_hash_entry
*h
;
3778 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3780 h
= ((struct aout_link_hash_entry
*)
3781 bfd_wrapped_link_hash_lookup (flaginfo
->output_bfd
, flaginfo
->info
,
3782 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3788 /* We decided to strip this symbol, but it turns out that we
3789 can't. Note that we lose the other and desc information
3790 here. I don't think that will ever matter for a global
3794 if (!aout_link_write_other_symbol (&h
->root
.root
, flaginfo
))
3800 (*flaginfo
->info
->callbacks
->unattached_reloc
)
3801 (flaginfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
3806 howto
= bfd_reloc_type_lookup (flaginfo
->output_bfd
, pr
->reloc
);
3809 bfd_set_error (bfd_error_bad_value
);
3813 if (o
== obj_textsec (flaginfo
->output_bfd
))
3814 reloff_ptr
= &flaginfo
->treloff
;
3815 else if (o
== obj_datasec (flaginfo
->output_bfd
))
3816 reloff_ptr
= &flaginfo
->dreloff
;
3820 if (obj_reloc_entry_size (flaginfo
->output_bfd
) == RELOC_STD_SIZE
)
3823 MY_put_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3833 r_pcrel
= (int) howto
->pc_relative
;
3834 r_baserel
= (howto
->type
& 8) != 0;
3835 r_jmptable
= (howto
->type
& 16) != 0;
3836 r_relative
= (howto
->type
& 32) != 0;
3837 r_length
= howto
->size
;
3839 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, srel
.r_address
);
3840 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3842 srel
.r_index
[0] = r_index
>> 16;
3843 srel
.r_index
[1] = r_index
>> 8;
3844 srel
.r_index
[2] = r_index
;
3846 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3847 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3848 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3849 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3850 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3851 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3855 srel
.r_index
[2] = r_index
>> 16;
3856 srel
.r_index
[1] = r_index
>> 8;
3857 srel
.r_index
[0] = r_index
;
3859 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3860 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3861 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3862 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3863 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3864 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3868 rel_ptr
= (void *) &srel
;
3870 /* We have to write the addend into the object file, since
3871 standard a.out relocs are in place. It would be more
3872 reliable if we had the current contents of the file here,
3873 rather than assuming zeroes, but we can't read the file since
3874 it was opened using bfd_openw. */
3875 if (pr
->addend
!= 0)
3878 bfd_reloc_status_type r
;
3882 size
= bfd_get_reloc_size (howto
);
3883 buf
= (bfd_byte
*) bfd_zmalloc (size
);
3884 if (buf
== NULL
&& size
!= 0)
3886 r
= MY_relocate_contents (howto
, flaginfo
->output_bfd
,
3887 (bfd_vma
) pr
->addend
, buf
);
3893 case bfd_reloc_outofrange
:
3895 case bfd_reloc_overflow
:
3896 (*flaginfo
->info
->callbacks
->reloc_overflow
)
3897 (flaginfo
->info
, NULL
,
3898 (p
->type
== bfd_section_reloc_link_order
3899 ? bfd_section_name (flaginfo
->output_bfd
,
3902 howto
->name
, pr
->addend
, NULL
, NULL
, (bfd_vma
) 0);
3905 ok
= bfd_set_section_contents (flaginfo
->output_bfd
, o
, (void *) buf
,
3906 (file_ptr
) p
->offset
, size
);
3914 #ifdef MY_put_ext_reloc
3915 MY_put_ext_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
3916 howto
, &erel
, pr
->addend
);
3918 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, erel
.r_address
);
3920 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3922 erel
.r_index
[0] = r_index
>> 16;
3923 erel
.r_index
[1] = r_index
>> 8;
3924 erel
.r_index
[2] = r_index
;
3926 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
3927 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
3931 erel
.r_index
[2] = r_index
>> 16;
3932 erel
.r_index
[1] = r_index
>> 8;
3933 erel
.r_index
[0] = r_index
;
3935 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
3936 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
3939 PUT_WORD (flaginfo
->output_bfd
, (bfd_vma
) pr
->addend
, erel
.r_addend
);
3940 #endif /* MY_put_ext_reloc */
3942 rel_ptr
= (void *) &erel
;
3945 amt
= obj_reloc_entry_size (flaginfo
->output_bfd
);
3946 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3947 || bfd_bwrite (rel_ptr
, amt
, flaginfo
->output_bfd
) != amt
)
3950 *reloff_ptr
+= obj_reloc_entry_size (flaginfo
->output_bfd
);
3952 /* Assert that the relocs have not run into the symbols, and that n
3953 the text relocs have not run into the data relocs. */
3954 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3955 && (reloff_ptr
!= &flaginfo
->treloff
3957 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3962 /* Get the section corresponding to a reloc index. */
3964 static INLINE asection
*
3965 aout_reloc_index_to_section (bfd
*abfd
, int indx
)
3967 switch (indx
& N_TYPE
)
3969 case N_TEXT
: return obj_textsec (abfd
);
3970 case N_DATA
: return obj_datasec (abfd
);
3971 case N_BSS
: return obj_bsssec (abfd
);
3973 case N_UNDF
: return bfd_abs_section_ptr
;
3979 /* Relocate an a.out section using standard a.out relocs. */
3982 aout_link_input_section_std (struct aout_final_link_info
*flaginfo
,
3984 asection
*input_section
,
3985 struct reloc_std_external
*relocs
,
3986 bfd_size_type rel_size
,
3989 bfd_boolean (*check_dynamic_reloc
)
3990 (struct bfd_link_info
*, bfd
*, asection
*,
3991 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3994 bfd_boolean relocatable
;
3995 struct external_nlist
*syms
;
3997 struct aout_link_hash_entry
**sym_hashes
;
3999 bfd_size_type reloc_count
;
4000 struct reloc_std_external
*rel
;
4001 struct reloc_std_external
*rel_end
;
4003 output_bfd
= flaginfo
->output_bfd
;
4004 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4006 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
4007 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4008 == output_bfd
->xvec
->header_byteorder
);
4010 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4011 syms
= obj_aout_external_syms (input_bfd
);
4012 strings
= obj_aout_external_strings (input_bfd
);
4013 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4014 symbol_map
= flaginfo
->symbol_map
;
4016 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
4018 rel_end
= rel
+ reloc_count
;
4019 for (; rel
< rel_end
; rel
++)
4026 reloc_howto_type
*howto
;
4027 struct aout_link_hash_entry
*h
= NULL
;
4029 bfd_reloc_status_type r
;
4031 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4033 #ifdef MY_reloc_howto
4034 howto
= MY_reloc_howto (input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
4040 unsigned int howto_idx
;
4042 if (bfd_header_big_endian (input_bfd
))
4044 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4045 | ((unsigned int) rel
->r_index
[1] << 8)
4047 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
4048 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
4049 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
4050 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
4051 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
4052 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
4053 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
4057 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4058 | ((unsigned int) rel
->r_index
[1] << 8)
4060 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
4061 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
4062 r_baserel
= (0 != (rel
->r_type
[0]
4063 & RELOC_STD_BITS_BASEREL_LITTLE
));
4064 r_jmptable
= (0 != (rel
->r_type
[0]
4065 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
4066 r_relative
= (0 != (rel
->r_type
[0]
4067 & RELOC_STD_BITS_RELATIVE_LITTLE
));
4068 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
4069 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
4072 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
4073 + 16 * r_jmptable
+ 32 * r_relative
);
4074 if (howto_idx
< TABLE_SIZE (howto_table_std
))
4075 howto
= howto_table_std
+ howto_idx
;
4083 _bfd_error_handler (_("%pB: unsupported relocation type"),
4085 bfd_set_error (bfd_error_bad_value
);
4091 /* We are generating a relocatable output file, and must
4092 modify the reloc accordingly. */
4095 /* If we know the symbol this relocation is against,
4096 convert it into a relocation against a section. This
4097 is what the native linker does. */
4098 h
= sym_hashes
[r_index
];
4100 && (h
->root
.type
== bfd_link_hash_defined
4101 || h
->root
.type
== bfd_link_hash_defweak
))
4103 asection
*output_section
;
4105 /* Change the r_extern value. */
4106 if (bfd_header_big_endian (output_bfd
))
4107 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
4109 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
4111 /* Compute a new r_index. */
4112 output_section
= h
->root
.u
.def
.section
->output_section
;
4113 if (output_section
== obj_textsec (output_bfd
))
4115 else if (output_section
== obj_datasec (output_bfd
))
4117 else if (output_section
== obj_bsssec (output_bfd
))
4122 /* Add the symbol value and the section VMA to the
4123 addend stored in the contents. */
4124 relocation
= (h
->root
.u
.def
.value
4125 + output_section
->vma
4126 + h
->root
.u
.def
.section
->output_offset
);
4130 /* We must change r_index according to the symbol
4132 r_index
= symbol_map
[r_index
];
4138 /* We decided to strip this symbol, but it
4139 turns out that we can't. Note that we
4140 lose the other and desc information here.
4141 I don't think that will ever matter for a
4147 if (!aout_link_write_other_symbol (&h
->root
.root
,
4157 name
= strings
+ GET_WORD (input_bfd
,
4158 syms
[r_index
].e_strx
);
4159 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4160 (flaginfo
->info
, name
,
4161 input_bfd
, input_section
, r_addr
);
4169 /* Write out the new r_index value. */
4170 if (bfd_header_big_endian (output_bfd
))
4172 rel
->r_index
[0] = r_index
>> 16;
4173 rel
->r_index
[1] = r_index
>> 8;
4174 rel
->r_index
[2] = r_index
;
4178 rel
->r_index
[2] = r_index
>> 16;
4179 rel
->r_index
[1] = r_index
>> 8;
4180 rel
->r_index
[0] = r_index
;
4187 /* This is a relocation against a section. We must
4188 adjust by the amount that the section moved. */
4189 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4190 relocation
= (section
->output_section
->vma
4191 + section
->output_offset
4195 /* Change the address of the relocation. */
4196 PUT_WORD (output_bfd
,
4197 r_addr
+ input_section
->output_offset
,
4200 /* Adjust a PC relative relocation by removing the reference
4201 to the original address in the section and including the
4202 reference to the new address. */
4204 relocation
-= (input_section
->output_section
->vma
4205 + input_section
->output_offset
4206 - input_section
->vma
);
4208 #ifdef MY_relocatable_reloc
4209 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4212 if (relocation
== 0)
4215 r
= MY_relocate_contents (howto
,
4216 input_bfd
, relocation
,
4223 /* We are generating an executable, and must do a full
4229 h
= sym_hashes
[r_index
];
4232 && (h
->root
.type
== bfd_link_hash_defined
4233 || h
->root
.type
== bfd_link_hash_defweak
))
4235 relocation
= (h
->root
.u
.def
.value
4236 + h
->root
.u
.def
.section
->output_section
->vma
4237 + h
->root
.u
.def
.section
->output_offset
);
4240 && h
->root
.type
== bfd_link_hash_undefweak
)
4252 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4253 relocation
= (section
->output_section
->vma
4254 + section
->output_offset
4257 relocation
+= input_section
->vma
;
4260 if (check_dynamic_reloc
!= NULL
)
4264 if (! ((*check_dynamic_reloc
)
4265 (flaginfo
->info
, input_bfd
, input_section
, h
,
4266 (void *) rel
, contents
, &skip
, &relocation
)))
4272 /* Now warn if a global symbol is undefined. We could not
4273 do this earlier, because check_dynamic_reloc might want
4274 to skip this reloc. */
4275 if (hundef
&& ! bfd_link_pic (flaginfo
->info
) && ! r_baserel
)
4280 name
= h
->root
.root
.string
;
4282 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4283 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4284 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4287 r
= MY_final_link_relocate (howto
,
4288 input_bfd
, input_section
,
4289 contents
, r_addr
, relocation
,
4293 if (r
!= bfd_reloc_ok
)
4298 case bfd_reloc_outofrange
:
4300 case bfd_reloc_overflow
:
4307 name
= strings
+ GET_WORD (input_bfd
,
4308 syms
[r_index
].e_strx
);
4313 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4314 name
= bfd_section_name (input_bfd
, s
);
4316 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4317 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
4318 (bfd_vma
) 0, input_bfd
, input_section
, r_addr
);
4328 /* Relocate an a.out section using extended a.out relocs. */
4331 aout_link_input_section_ext (struct aout_final_link_info
*flaginfo
,
4333 asection
*input_section
,
4334 struct reloc_ext_external
*relocs
,
4335 bfd_size_type rel_size
,
4338 bfd_boolean (*check_dynamic_reloc
)
4339 (struct bfd_link_info
*, bfd
*, asection
*,
4340 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
4343 bfd_boolean relocatable
;
4344 struct external_nlist
*syms
;
4346 struct aout_link_hash_entry
**sym_hashes
;
4348 bfd_size_type reloc_count
;
4349 struct reloc_ext_external
*rel
;
4350 struct reloc_ext_external
*rel_end
;
4352 output_bfd
= flaginfo
->output_bfd
;
4353 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4355 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
4356 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4357 == output_bfd
->xvec
->header_byteorder
);
4359 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4360 syms
= obj_aout_external_syms (input_bfd
);
4361 strings
= obj_aout_external_strings (input_bfd
);
4362 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4363 symbol_map
= flaginfo
->symbol_map
;
4365 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
4367 rel_end
= rel
+ reloc_count
;
4368 for (; rel
< rel_end
; rel
++)
4373 unsigned int r_type
;
4375 struct aout_link_hash_entry
*h
= NULL
;
4376 asection
*r_section
= NULL
;
4379 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4381 if (bfd_header_big_endian (input_bfd
))
4383 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4384 | ((unsigned int) rel
->r_index
[1] << 8)
4386 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
4387 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
4388 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
4392 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4393 | ((unsigned int) rel
->r_index
[1] << 8)
4395 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
4396 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
4397 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
4400 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
4402 if (r_type
>= TABLE_SIZE (howto_table_ext
))
4404 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4406 bfd_set_error (bfd_error_bad_value
);
4412 /* We are generating a relocatable output file, and must
4413 modify the reloc accordingly. */
4415 || r_type
== (unsigned int) RELOC_BASE10
4416 || r_type
== (unsigned int) RELOC_BASE13
4417 || r_type
== (unsigned int) RELOC_BASE22
)
4419 /* If we know the symbol this relocation is against,
4420 convert it into a relocation against a section. This
4421 is what the native linker does. */
4422 if (r_type
== (unsigned int) RELOC_BASE10
4423 || r_type
== (unsigned int) RELOC_BASE13
4424 || r_type
== (unsigned int) RELOC_BASE22
)
4427 h
= sym_hashes
[r_index
];
4429 && (h
->root
.type
== bfd_link_hash_defined
4430 || h
->root
.type
== bfd_link_hash_defweak
))
4432 asection
*output_section
;
4434 /* Change the r_extern value. */
4435 if (bfd_header_big_endian (output_bfd
))
4436 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
4438 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
4440 /* Compute a new r_index. */
4441 output_section
= h
->root
.u
.def
.section
->output_section
;
4442 if (output_section
== obj_textsec (output_bfd
))
4444 else if (output_section
== obj_datasec (output_bfd
))
4446 else if (output_section
== obj_bsssec (output_bfd
))
4451 /* Add the symbol value and the section VMA to the
4453 relocation
= (h
->root
.u
.def
.value
4454 + output_section
->vma
4455 + h
->root
.u
.def
.section
->output_offset
);
4457 /* Now RELOCATION is the VMA of the final
4458 destination. If this is a PC relative reloc,
4459 then ADDEND is the negative of the source VMA.
4460 We want to set ADDEND to the difference between
4461 the destination VMA and the source VMA, which
4462 means we must adjust RELOCATION by the change in
4463 the source VMA. This is done below. */
4467 /* We must change r_index according to the symbol
4469 r_index
= symbol_map
[r_index
];
4475 /* We decided to strip this symbol, but it
4476 turns out that we can't. Note that we
4477 lose the other and desc information here.
4478 I don't think that will ever matter for a
4484 if (!aout_link_write_other_symbol (&h
->root
.root
,
4494 name
= strings
+ GET_WORD (input_bfd
,
4495 syms
[r_index
].e_strx
);
4496 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4497 (flaginfo
->info
, name
,
4498 input_bfd
, input_section
, r_addr
);
4505 /* If this is a PC relative reloc, then the addend
4506 is the negative of the source VMA. We must
4507 adjust it by the change in the source VMA. This
4511 /* Write out the new r_index value. */
4512 if (bfd_header_big_endian (output_bfd
))
4514 rel
->r_index
[0] = r_index
>> 16;
4515 rel
->r_index
[1] = r_index
>> 8;
4516 rel
->r_index
[2] = r_index
;
4520 rel
->r_index
[2] = r_index
>> 16;
4521 rel
->r_index
[1] = r_index
>> 8;
4522 rel
->r_index
[0] = r_index
;
4527 /* This is a relocation against a section. We must
4528 adjust by the amount that the section moved. */
4529 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4530 relocation
= (r_section
->output_section
->vma
4531 + r_section
->output_offset
4534 /* If this is a PC relative reloc, then the addend is
4535 the difference in VMA between the destination and the
4536 source. We have just adjusted for the change in VMA
4537 of the destination, so we must also adjust by the
4538 change in VMA of the source. This is done below. */
4541 /* As described above, we must always adjust a PC relative
4542 reloc by the change in VMA of the source. However, if
4543 pcrel_offset is set, then the addend does not include the
4544 location within the section, in which case we don't need
4545 to adjust anything. */
4546 if (howto_table_ext
[r_type
].pc_relative
4547 && ! howto_table_ext
[r_type
].pcrel_offset
)
4548 relocation
-= (input_section
->output_section
->vma
4549 + input_section
->output_offset
4550 - input_section
->vma
);
4552 /* Change the addend if necessary. */
4553 if (relocation
!= 0)
4554 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
4556 /* Change the address of the relocation. */
4557 PUT_WORD (output_bfd
,
4558 r_addr
+ input_section
->output_offset
,
4564 bfd_reloc_status_type r
;
4566 /* We are generating an executable, and must do a full
4572 h
= sym_hashes
[r_index
];
4575 && (h
->root
.type
== bfd_link_hash_defined
4576 || h
->root
.type
== bfd_link_hash_defweak
))
4578 relocation
= (h
->root
.u
.def
.value
4579 + h
->root
.u
.def
.section
->output_section
->vma
4580 + h
->root
.u
.def
.section
->output_offset
);
4583 && h
->root
.type
== bfd_link_hash_undefweak
)
4591 else if (r_type
== (unsigned int) RELOC_BASE10
4592 || r_type
== (unsigned int) RELOC_BASE13
4593 || r_type
== (unsigned int) RELOC_BASE22
)
4595 struct external_nlist
*sym
;
4598 /* For base relative relocs, r_index is always an index
4599 into the symbol table, even if r_extern is 0. */
4600 sym
= syms
+ r_index
;
4601 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4602 if ((type
& N_TYPE
) == N_TEXT
4604 r_section
= obj_textsec (input_bfd
);
4605 else if ((type
& N_TYPE
) == N_DATA
4607 r_section
= obj_datasec (input_bfd
);
4608 else if ((type
& N_TYPE
) == N_BSS
4610 r_section
= obj_bsssec (input_bfd
);
4611 else if ((type
& N_TYPE
) == N_ABS
4613 r_section
= bfd_abs_section_ptr
;
4616 relocation
= (r_section
->output_section
->vma
4617 + r_section
->output_offset
4618 + (GET_WORD (input_bfd
, sym
->e_value
)
4623 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4625 /* If this is a PC relative reloc, then R_ADDEND is the
4626 difference between the two vmas, or
4627 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4629 old_dest_sec == section->vma
4631 old_src_sec == input_section->vma
4633 old_src_off == r_addr
4635 _bfd_final_link_relocate expects RELOCATION +
4636 R_ADDEND to be the VMA of the destination minus
4637 r_addr (the minus r_addr is because this relocation
4638 is not pcrel_offset, which is a bit confusing and
4639 should, perhaps, be changed), or
4642 new_dest_sec == output_section->vma + output_offset
4643 We arrange for this to happen by setting RELOCATION to
4644 new_dest_sec + old_src_sec - old_dest_sec
4646 If this is not a PC relative reloc, then R_ADDEND is
4647 simply the VMA of the destination, so we set
4648 RELOCATION to the change in the destination VMA, or
4649 new_dest_sec - old_dest_sec
4651 relocation
= (r_section
->output_section
->vma
4652 + r_section
->output_offset
4654 if (howto_table_ext
[r_type
].pc_relative
)
4655 relocation
+= input_section
->vma
;
4658 if (check_dynamic_reloc
!= NULL
)
4662 if (! ((*check_dynamic_reloc
)
4663 (flaginfo
->info
, input_bfd
, input_section
, h
,
4664 (void *) rel
, contents
, &skip
, &relocation
)))
4670 /* Now warn if a global symbol is undefined. We could not
4671 do this earlier, because check_dynamic_reloc might want
4672 to skip this reloc. */
4674 && ! bfd_link_pic (flaginfo
->info
)
4675 && r_type
!= (unsigned int) RELOC_BASE10
4676 && r_type
!= (unsigned int) RELOC_BASE13
4677 && r_type
!= (unsigned int) RELOC_BASE22
)
4682 name
= h
->root
.root
.string
;
4684 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4685 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4686 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4689 if (r_type
!= (unsigned int) RELOC_SPARC_REV32
)
4690 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
4691 input_bfd
, input_section
,
4692 contents
, r_addr
, relocation
,
4698 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
4699 x
= x
+ relocation
+ r_addend
;
4700 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
4704 if (r
!= bfd_reloc_ok
)
4709 case bfd_reloc_outofrange
:
4711 case bfd_reloc_overflow
:
4718 || r_type
== (unsigned int) RELOC_BASE10
4719 || r_type
== (unsigned int) RELOC_BASE13
4720 || r_type
== (unsigned int) RELOC_BASE22
)
4721 name
= strings
+ GET_WORD (input_bfd
,
4722 syms
[r_index
].e_strx
);
4727 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4728 name
= bfd_section_name (input_bfd
, s
);
4730 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4731 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
,
4732 howto_table_ext
[r_type
].name
,
4733 r_addend
, input_bfd
, input_section
, r_addr
);
4744 /* Link an a.out section into the output file. */
4747 aout_link_input_section (struct aout_final_link_info
*flaginfo
,
4749 asection
*input_section
,
4750 file_ptr
*reloff_ptr
,
4751 bfd_size_type rel_size
)
4753 bfd_size_type input_size
;
4756 /* Get the section contents. */
4757 input_size
= input_section
->size
;
4758 if (! bfd_get_section_contents (input_bfd
, input_section
,
4759 (void *) flaginfo
->contents
,
4760 (file_ptr
) 0, input_size
))
4763 /* Read in the relocs if we haven't already done it. */
4764 if (aout_section_data (input_section
) != NULL
4765 && aout_section_data (input_section
)->relocs
!= NULL
)
4766 relocs
= aout_section_data (input_section
)->relocs
;
4769 relocs
= flaginfo
->relocs
;
4772 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4773 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
4778 /* Relocate the section contents. */
4779 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4781 if (! aout_link_input_section_std (flaginfo
, input_bfd
, input_section
,
4782 (struct reloc_std_external
*) relocs
,
4783 rel_size
, flaginfo
->contents
))
4788 if (! aout_link_input_section_ext (flaginfo
, input_bfd
, input_section
,
4789 (struct reloc_ext_external
*) relocs
,
4790 rel_size
, flaginfo
->contents
))
4794 /* Write out the section contents. */
4795 if (! bfd_set_section_contents (flaginfo
->output_bfd
,
4796 input_section
->output_section
,
4797 (void *) flaginfo
->contents
,
4798 (file_ptr
) input_section
->output_offset
,
4802 /* If we are producing relocatable output, the relocs were
4803 modified, and we now write them out. */
4804 if (bfd_link_relocatable (flaginfo
->info
) && rel_size
> 0)
4806 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4808 if (bfd_bwrite (relocs
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
4810 *reloff_ptr
+= rel_size
;
4812 /* Assert that the relocs have not run into the symbols, and
4813 that if these are the text relocs they have not run into the
4815 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
4816 && (reloff_ptr
!= &flaginfo
->treloff
4818 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
4824 /* Adjust and write out the symbols for an a.out file. Set the new
4825 symbol indices into a symbol_map. */
4828 aout_link_write_symbols (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
4831 bfd_size_type sym_count
;
4833 enum bfd_link_strip strip
;
4834 enum bfd_link_discard discard
;
4835 struct external_nlist
*outsym
;
4836 bfd_size_type strtab_index
;
4837 struct external_nlist
*sym
;
4838 struct external_nlist
*sym_end
;
4839 struct aout_link_hash_entry
**sym_hash
;
4842 bfd_boolean skip_next
;
4844 output_bfd
= flaginfo
->output_bfd
;
4845 sym_count
= obj_aout_external_sym_count (input_bfd
);
4846 strings
= obj_aout_external_strings (input_bfd
);
4847 strip
= flaginfo
->info
->strip
;
4848 discard
= flaginfo
->info
->discard
;
4849 outsym
= flaginfo
->output_syms
;
4851 /* First write out a symbol for this object file, unless we are
4852 discarding such symbols. */
4853 if (strip
!= strip_all
4854 && (strip
!= strip_some
4855 || bfd_hash_lookup (flaginfo
->info
->keep_hash
, input_bfd
->filename
,
4856 FALSE
, FALSE
) != NULL
)
4857 && discard
!= discard_all
)
4859 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4860 H_PUT_8 (output_bfd
, 0, outsym
->e_other
);
4861 H_PUT_16 (output_bfd
, 0, outsym
->e_desc
);
4862 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4863 input_bfd
->filename
, FALSE
);
4864 if (strtab_index
== (bfd_size_type
) -1)
4866 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4867 PUT_WORD (output_bfd
,
4868 (bfd_get_section_vma (output_bfd
,
4869 obj_textsec (input_bfd
)->output_section
)
4870 + obj_textsec (input_bfd
)->output_offset
),
4872 ++obj_aout_external_sym_count (output_bfd
);
4878 sym
= obj_aout_external_syms (input_bfd
);
4879 sym_end
= sym
+ sym_count
;
4880 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4881 symbol_map
= flaginfo
->symbol_map
;
4882 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4883 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4887 struct aout_link_hash_entry
*h
;
4893 /* We set *symbol_map to 0 above for all symbols. If it has
4894 already been set to -1 for this symbol, it means that we are
4895 discarding it because it appears in a duplicate header file.
4896 See the N_BINCL code below. */
4897 if (*symbol_map
== -1)
4900 /* Initialize *symbol_map to -1, which means that the symbol was
4901 not copied into the output file. We will change it later if
4902 we do copy the symbol over. */
4905 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4906 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4912 /* Pass this symbol through. It is the target of an
4913 indirect or warning symbol. */
4914 val
= GET_WORD (input_bfd
, sym
->e_value
);
4919 /* Skip this symbol, which is the target of an indirect
4920 symbol that we have changed to no longer be an indirect
4927 struct aout_link_hash_entry
*hresolve
;
4929 /* We have saved the hash table entry for this symbol, if
4930 there is one. Note that we could just look it up again
4931 in the hash table, provided we first check that it is an
4935 /* Use the name from the hash table, in case the symbol was
4938 && h
->root
.type
!= bfd_link_hash_warning
)
4939 name
= h
->root
.root
.string
;
4941 /* If this is an indirect or warning symbol, then change
4942 hresolve to the base symbol. We also change *sym_hash so
4943 that the relocation routines relocate against the real
4946 if (h
!= (struct aout_link_hash_entry
*) NULL
4947 && (h
->root
.type
== bfd_link_hash_indirect
4948 || h
->root
.type
== bfd_link_hash_warning
))
4950 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4951 while (hresolve
->root
.type
== bfd_link_hash_indirect
4952 || hresolve
->root
.type
== bfd_link_hash_warning
)
4953 hresolve
= ((struct aout_link_hash_entry
*)
4954 hresolve
->root
.u
.i
.link
);
4955 *sym_hash
= hresolve
;
4958 /* If the symbol has already been written out, skip it. */
4962 if ((type
& N_TYPE
) == N_INDR
4963 || type
== N_WARNING
)
4965 *symbol_map
= h
->indx
;
4969 /* See if we are stripping this symbol. */
4975 case strip_debugger
:
4976 if ((type
& N_STAB
) != 0)
4980 if (bfd_hash_lookup (flaginfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4995 /* Get the value of the symbol. */
4996 if ((type
& N_TYPE
) == N_TEXT
4998 symsec
= obj_textsec (input_bfd
);
4999 else if ((type
& N_TYPE
) == N_DATA
5001 symsec
= obj_datasec (input_bfd
);
5002 else if ((type
& N_TYPE
) == N_BSS
5004 symsec
= obj_bsssec (input_bfd
);
5005 else if ((type
& N_TYPE
) == N_ABS
5007 symsec
= bfd_abs_section_ptr
;
5008 else if (((type
& N_TYPE
) == N_INDR
5009 && (hresolve
== NULL
5010 || (hresolve
->root
.type
!= bfd_link_hash_defined
5011 && hresolve
->root
.type
!= bfd_link_hash_defweak
5012 && hresolve
->root
.type
!= bfd_link_hash_common
)))
5013 || type
== N_WARNING
)
5015 /* Pass the next symbol through unchanged. The
5016 condition above for indirect symbols is so that if
5017 the indirect symbol was defined, we output it with
5018 the correct definition so the debugger will
5021 val
= GET_WORD (input_bfd
, sym
->e_value
);
5024 else if ((type
& N_STAB
) != 0)
5026 val
= GET_WORD (input_bfd
, sym
->e_value
);
5031 /* If we get here with an indirect symbol, it means that
5032 we are outputting it with a real definition. In such
5033 a case we do not want to output the next symbol,
5034 which is the target of the indirection. */
5035 if ((type
& N_TYPE
) == N_INDR
)
5040 /* We need to get the value from the hash table. We use
5041 hresolve so that if we have defined an indirect
5042 symbol we output the final definition. */
5045 switch (type
& N_TYPE
)
5048 symsec
= obj_textsec (input_bfd
);
5051 symsec
= obj_datasec (input_bfd
);
5054 symsec
= obj_bsssec (input_bfd
);
5057 symsec
= bfd_abs_section_ptr
;
5064 else if (hresolve
->root
.type
== bfd_link_hash_defined
5065 || hresolve
->root
.type
== bfd_link_hash_defweak
)
5067 asection
*input_section
;
5068 asection
*output_section
;
5070 /* This case usually means a common symbol which was
5071 turned into a defined symbol. */
5072 input_section
= hresolve
->root
.u
.def
.section
;
5073 output_section
= input_section
->output_section
;
5074 BFD_ASSERT (bfd_is_abs_section (output_section
)
5075 || output_section
->owner
== output_bfd
);
5076 val
= (hresolve
->root
.u
.def
.value
5077 + bfd_get_section_vma (output_bfd
, output_section
)
5078 + input_section
->output_offset
);
5080 /* Get the correct type based on the section. If
5081 this is a constructed set, force it to be
5082 globally visible. */
5091 if (output_section
== obj_textsec (output_bfd
))
5092 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5095 else if (output_section
== obj_datasec (output_bfd
))
5096 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5099 else if (output_section
== obj_bsssec (output_bfd
))
5100 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5104 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5108 else if (hresolve
->root
.type
== bfd_link_hash_common
)
5109 val
= hresolve
->root
.u
.c
.size
;
5110 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
5119 val
= (symsec
->output_section
->vma
5120 + symsec
->output_offset
5121 + (GET_WORD (input_bfd
, sym
->e_value
)
5124 /* If this is a global symbol set the written flag, and if
5125 it is a local symbol see if we should discard it. */
5129 h
->indx
= obj_aout_external_sym_count (output_bfd
);
5131 else if ((type
& N_TYPE
) != N_SETT
5132 && (type
& N_TYPE
) != N_SETD
5133 && (type
& N_TYPE
) != N_SETB
5134 && (type
& N_TYPE
) != N_SETA
)
5139 case discard_sec_merge
:
5142 if ((type
& N_STAB
) == 0
5143 && bfd_is_local_label_name (input_bfd
, name
))
5157 /* An N_BINCL symbol indicates the start of the stabs
5158 entries for a header file. We need to scan ahead to the
5159 next N_EINCL symbol, ignoring nesting, adding up all the
5160 characters in the symbol names, not including the file
5161 numbers in types (the first number after an open
5163 if (type
== (int) N_BINCL
)
5165 struct external_nlist
*incl_sym
;
5167 struct aout_link_includes_entry
*incl_entry
;
5168 struct aout_link_includes_totals
*t
;
5172 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
5176 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5177 if (incl_type
== (int) N_EINCL
)
5183 else if (incl_type
== (int) N_BINCL
)
5189 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
5190 for (; *s
!= '\0'; s
++)
5195 /* Skip the file number. */
5197 while (ISDIGIT (*s
))
5205 /* If we have already included a header file with the
5206 same value, then replace this one with an N_EXCL
5208 copy
= (bfd_boolean
) (! flaginfo
->info
->keep_memory
);
5209 incl_entry
= aout_link_includes_lookup (&flaginfo
->includes
,
5211 if (incl_entry
== NULL
)
5213 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
5214 if (t
->total
== val
)
5218 /* This is the first time we have seen this header
5219 file with this set of stabs strings. */
5220 t
= (struct aout_link_includes_totals
*)
5221 bfd_hash_allocate (&flaginfo
->includes
.root
,
5226 t
->next
= incl_entry
->totals
;
5227 incl_entry
->totals
= t
;
5233 /* This is a duplicate header file. We must change
5234 it to be an N_EXCL entry, and mark all the
5235 included symbols to prevent outputting them. */
5236 type
= (int) N_EXCL
;
5239 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
5241 incl_sym
++, incl_map
++)
5245 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5246 if (incl_type
== (int) N_EINCL
)
5255 else if (incl_type
== (int) N_BINCL
)
5264 /* Copy this symbol into the list of symbols we are going to
5266 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
5267 H_PUT_8 (output_bfd
, H_GET_8 (input_bfd
, sym
->e_other
), outsym
->e_other
);
5268 H_PUT_16 (output_bfd
, H_GET_16 (input_bfd
, sym
->e_desc
), outsym
->e_desc
);
5270 if (! flaginfo
->info
->keep_memory
)
5272 /* name points into a string table which we are going to
5273 free. If there is a hash table entry, use that string.
5274 Otherwise, copy name into memory. */
5276 name
= h
->root
.root
.string
;
5280 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
5282 if (strtab_index
== (bfd_size_type
) -1)
5284 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
5285 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
5286 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
5287 ++obj_aout_external_sym_count (output_bfd
);
5291 /* Write out the output symbols we have just constructed. */
5292 if (outsym
> flaginfo
->output_syms
)
5294 bfd_size_type outsym_size
;
5296 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0)
5298 outsym_size
= outsym
- flaginfo
->output_syms
;
5299 outsym_size
*= EXTERNAL_NLIST_SIZE
;
5300 if (bfd_bwrite ((void *) flaginfo
->output_syms
, outsym_size
, output_bfd
)
5303 flaginfo
->symoff
+= outsym_size
;
5309 /* Link an a.out input BFD into the output file. */
5312 aout_link_input_bfd (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
5314 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
5316 /* If this is a dynamic object, it may need special handling. */
5317 if ((input_bfd
->flags
& DYNAMIC
) != 0
5318 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
5319 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
5320 (flaginfo
->info
, input_bfd
));
5322 /* Get the symbols. We probably have them already, unless
5323 flaginfo->info->keep_memory is FALSE. */
5324 if (! aout_get_external_symbols (input_bfd
))
5327 /* Write out the symbols and get a map of the new indices. The map
5328 is placed into flaginfo->symbol_map. */
5329 if (! aout_link_write_symbols (flaginfo
, input_bfd
))
5332 /* Relocate and write out the sections. These functions use the
5333 symbol map created by aout_link_write_symbols. The linker_mark
5334 field will be set if these sections are to be included in the
5335 link, which will normally be the case. */
5336 if (obj_textsec (input_bfd
)->linker_mark
)
5338 if (! aout_link_input_section (flaginfo
, input_bfd
,
5339 obj_textsec (input_bfd
),
5341 exec_hdr (input_bfd
)->a_trsize
))
5344 if (obj_datasec (input_bfd
)->linker_mark
)
5346 if (! aout_link_input_section (flaginfo
, input_bfd
,
5347 obj_datasec (input_bfd
),
5349 exec_hdr (input_bfd
)->a_drsize
))
5353 /* If we are not keeping memory, we don't need the symbols any
5354 longer. We still need them if we are keeping memory, because the
5355 strings in the hash table point into them. */
5356 if (! flaginfo
->info
->keep_memory
)
5358 if (! aout_link_free_symbols (input_bfd
))
5365 /* Do the final link step. This is called on the output BFD. The
5366 INFO structure should point to a list of BFDs linked through the
5367 link.next field which can be used to find each BFD which takes part
5368 in the output. Also, each section in ABFD should point to a list
5369 of bfd_link_order structures which list all the input sections for
5370 the output section. */
5373 NAME (aout
, final_link
) (bfd
*abfd
,
5374 struct bfd_link_info
*info
,
5375 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
5377 struct aout_final_link_info aout_info
;
5378 bfd_boolean includes_hash_initialized
= FALSE
;
5380 bfd_size_type trsize
, drsize
;
5381 bfd_size_type max_contents_size
;
5382 bfd_size_type max_relocs_size
;
5383 bfd_size_type max_sym_count
;
5384 struct bfd_link_order
*p
;
5386 bfd_boolean have_link_order_relocs
;
5388 if (bfd_link_pic (info
))
5389 abfd
->flags
|= DYNAMIC
;
5391 aout_info
.info
= info
;
5392 aout_info
.output_bfd
= abfd
;
5393 aout_info
.contents
= NULL
;
5394 aout_info
.relocs
= NULL
;
5395 aout_info
.symbol_map
= NULL
;
5396 aout_info
.output_syms
= NULL
;
5398 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
5399 aout_link_includes_newfunc
,
5400 sizeof (struct aout_link_includes_entry
),
5403 includes_hash_initialized
= TRUE
;
5405 /* Figure out the largest section size. Also, if generating
5406 relocatable output, count the relocs. */
5409 max_contents_size
= 0;
5410 max_relocs_size
= 0;
5412 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5416 if (bfd_link_relocatable (info
))
5418 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5420 trsize
+= exec_hdr (sub
)->a_trsize
;
5421 drsize
+= exec_hdr (sub
)->a_drsize
;
5425 /* FIXME: We need to identify the .text and .data sections
5426 and call get_reloc_upper_bound and canonicalize_reloc to
5427 work out the number of relocs needed, and then multiply
5428 by the reloc size. */
5430 /* xgettext:c-format */
5431 (_("%pB: relocatable link from %s to %s not supported"),
5432 abfd
, sub
->xvec
->name
, abfd
->xvec
->name
);
5433 bfd_set_error (bfd_error_invalid_operation
);
5438 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5440 sz
= obj_textsec (sub
)->size
;
5441 if (sz
> max_contents_size
)
5442 max_contents_size
= sz
;
5443 sz
= obj_datasec (sub
)->size
;
5444 if (sz
> max_contents_size
)
5445 max_contents_size
= sz
;
5447 sz
= exec_hdr (sub
)->a_trsize
;
5448 if (sz
> max_relocs_size
)
5449 max_relocs_size
= sz
;
5450 sz
= exec_hdr (sub
)->a_drsize
;
5451 if (sz
> max_relocs_size
)
5452 max_relocs_size
= sz
;
5454 sz
= obj_aout_external_sym_count (sub
);
5455 if (sz
> max_sym_count
)
5460 if (bfd_link_relocatable (info
))
5462 if (obj_textsec (abfd
) != NULL
)
5463 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
5464 ->map_head
.link_order
)
5465 * obj_reloc_entry_size (abfd
));
5466 if (obj_datasec (abfd
) != NULL
)
5467 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
5468 ->map_head
.link_order
)
5469 * obj_reloc_entry_size (abfd
));
5472 exec_hdr (abfd
)->a_trsize
= trsize
;
5473 exec_hdr (abfd
)->a_drsize
= drsize
;
5475 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
5477 /* Adjust the section sizes and vmas according to the magic number.
5478 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5479 filepos for each section. */
5480 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
5483 /* The relocation and symbol file positions differ among a.out
5484 targets. We are passed a callback routine from the backend
5485 specific code to handle this.
5486 FIXME: At this point we do not know how much space the symbol
5487 table will require. This will not work for any (nonstandard)
5488 a.out target that needs to know the symbol table size before it
5489 can compute the relocation file positions. */
5490 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
5492 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
5493 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
5494 obj_sym_filepos (abfd
) = aout_info
.symoff
;
5496 /* We keep a count of the symbols as we output them. */
5497 obj_aout_external_sym_count (abfd
) = 0;
5499 /* We accumulate the string table as we write out the symbols. */
5500 aout_info
.strtab
= _bfd_stringtab_init ();
5501 if (aout_info
.strtab
== NULL
)
5504 /* Allocate buffers to hold section contents and relocs. */
5505 aout_info
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
5506 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
5507 aout_info
.symbol_map
= (int *) bfd_malloc (max_sym_count
* sizeof (int));
5508 aout_info
.output_syms
= (struct external_nlist
*)
5509 bfd_malloc ((max_sym_count
+ 1) * sizeof (struct external_nlist
));
5510 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
5511 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
5512 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
5513 || aout_info
.output_syms
== NULL
)
5516 /* If we have a symbol named __DYNAMIC, force it out now. This is
5517 required by SunOS. Doing this here rather than in sunos.c is a
5518 hack, but it's easier than exporting everything which would be
5521 struct aout_link_hash_entry
*h
;
5523 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
5524 FALSE
, FALSE
, FALSE
);
5526 aout_link_write_other_symbol (&h
->root
.root
, &aout_info
);
5529 /* The most time efficient way to do the link would be to read all
5530 the input object files into memory and then sort out the
5531 information into the output file. Unfortunately, that will
5532 probably use too much memory. Another method would be to step
5533 through everything that composes the text section and write it
5534 out, and then everything that composes the data section and write
5535 it out, and then write out the relocs, and then write out the
5536 symbols. Unfortunately, that requires reading stuff from each
5537 input file several times, and we will not be able to keep all the
5538 input files open simultaneously, and reopening them will be slow.
5540 What we do is basically process one input file at a time. We do
5541 everything we need to do with an input file once--copy over the
5542 section contents, handle the relocation information, and write
5543 out the symbols--and then we throw away the information we read
5544 from it. This approach requires a lot of lseeks of the output
5545 file, which is unfortunate but still faster than reopening a lot
5548 We use the output_has_begun field of the input BFDs to see
5549 whether we have already handled it. */
5550 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5551 sub
->output_has_begun
= FALSE
;
5553 /* Mark all sections which are to be included in the link. This
5554 will normally be every section. We need to do this so that we
5555 can identify any sections which the linker has decided to not
5557 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5559 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5560 if (p
->type
== bfd_indirect_link_order
)
5561 p
->u
.indirect
.section
->linker_mark
= TRUE
;
5564 have_link_order_relocs
= FALSE
;
5565 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5567 for (p
= o
->map_head
.link_order
;
5571 if (p
->type
== bfd_indirect_link_order
5572 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
5573 == bfd_target_aout_flavour
))
5577 input_bfd
= p
->u
.indirect
.section
->owner
;
5578 if (! input_bfd
->output_has_begun
)
5580 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
5582 input_bfd
->output_has_begun
= TRUE
;
5585 else if (p
->type
== bfd_section_reloc_link_order
5586 || p
->type
== bfd_symbol_reloc_link_order
)
5588 /* These are handled below. */
5589 have_link_order_relocs
= TRUE
;
5593 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
5599 /* Write out any symbols that we have not already written out. */
5600 bfd_hash_traverse (&info
->hash
->table
,
5601 aout_link_write_other_symbol
,
5604 /* Now handle any relocs we were asked to create by the linker.
5605 These did not come from any input file. We must do these after
5606 we have written out all the symbols, so that we know the symbol
5608 if (have_link_order_relocs
)
5610 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5612 for (p
= o
->map_head
.link_order
;
5616 if (p
->type
== bfd_section_reloc_link_order
5617 || p
->type
== bfd_symbol_reloc_link_order
)
5619 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
5626 if (aout_info
.contents
!= NULL
)
5628 free (aout_info
.contents
);
5629 aout_info
.contents
= NULL
;
5631 if (aout_info
.relocs
!= NULL
)
5633 free (aout_info
.relocs
);
5634 aout_info
.relocs
= NULL
;
5636 if (aout_info
.symbol_map
!= NULL
)
5638 free (aout_info
.symbol_map
);
5639 aout_info
.symbol_map
= NULL
;
5641 if (aout_info
.output_syms
!= NULL
)
5643 free (aout_info
.output_syms
);
5644 aout_info
.output_syms
= NULL
;
5646 if (includes_hash_initialized
)
5648 bfd_hash_table_free (&aout_info
.includes
.root
);
5649 includes_hash_initialized
= FALSE
;
5652 /* Finish up any dynamic linking we may be doing. */
5653 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
5655 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
5659 /* Update the header information. */
5660 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
5661 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
5662 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
5663 obj_textsec (abfd
)->reloc_count
=
5664 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
5665 obj_datasec (abfd
)->reloc_count
=
5666 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
5668 /* Write out the string table, unless there are no symbols. */
5669 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0)
5671 if (abfd
->symcount
> 0)
5673 if (!emit_stringtab (abfd
, aout_info
.strtab
))
5678 bfd_byte b
[BYTES_IN_WORD
];
5680 memset (b
, 0, BYTES_IN_WORD
);
5681 if (bfd_bwrite (b
, (bfd_size_type
) BYTES_IN_WORD
, abfd
) != BYTES_IN_WORD
)
5688 if (aout_info
.contents
!= NULL
)
5689 free (aout_info
.contents
);
5690 if (aout_info
.relocs
!= NULL
)
5691 free (aout_info
.relocs
);
5692 if (aout_info
.symbol_map
!= NULL
)
5693 free (aout_info
.symbol_map
);
5694 if (aout_info
.output_syms
!= NULL
)
5695 free (aout_info
.output_syms
);
5696 if (includes_hash_initialized
)
5697 bfd_hash_table_free (&aout_info
.includes
.root
);