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
;
2726 if (strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2728 if (q
->symbol
.value
> low_line_vma
)
2731 line_file_name
= NULL
;
2733 if (q
->symbol
.value
> low_func_vma
)
2740 /* If this symbol is less than the offset, but greater than
2741 the line number we have found so far, then we have not
2742 found the right line number. */
2743 if (q
->symbol
.value
<= offset
)
2745 if (q
->symbol
.value
> low_line_vma
)
2748 line_file_name
= NULL
;
2750 if (q
->symbol
.value
> low_func_vma
)
2754 main_file_name
= current_file_name
= q
->symbol
.name
;
2755 /* Look ahead to next symbol to check if that too is an N_SO. */
2759 q
= (aout_symbol_type
*) (*p
);
2760 if (q
->type
!= (int)N_SO
)
2763 /* Found a second N_SO First is directory; second is filename. */
2764 directory_name
= current_file_name
;
2765 main_file_name
= current_file_name
= q
->symbol
.name
;
2766 if (obj_textsec (abfd
) != section
)
2770 current_file_name
= q
->symbol
.name
;
2777 /* We'll keep this if it resolves nearer than the one we have
2779 if (q
->symbol
.value
>= low_line_vma
2780 && q
->symbol
.value
<= offset
)
2782 *line_ptr
= q
->desc
;
2783 low_line_vma
= q
->symbol
.value
;
2784 line_file_name
= current_file_name
;
2785 line_directory_name
= directory_name
;
2790 /* We'll keep this if it is nearer than the one we have already. */
2791 if (q
->symbol
.value
>= low_func_vma
&&
2792 q
->symbol
.value
<= offset
)
2794 low_func_vma
= q
->symbol
.value
;
2795 func
= (asymbol
*)q
;
2797 else if (q
->symbol
.value
> offset
)
2808 main_file_name
= line_file_name
;
2809 directory_name
= line_directory_name
;
2812 if (main_file_name
== NULL
2813 || IS_ABSOLUTE_PATH (main_file_name
)
2814 || directory_name
== NULL
)
2817 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2822 funclen
= strlen (bfd_asymbol_name (func
));
2824 if (adata (abfd
).line_buf
!= NULL
)
2825 free (adata (abfd
).line_buf
);
2827 if (filelen
+ funclen
== 0)
2828 adata (abfd
).line_buf
= buf
= NULL
;
2831 buf
= (char *) bfd_malloc (filelen
+ funclen
+ 3);
2832 adata (abfd
).line_buf
= buf
;
2837 if (main_file_name
!= NULL
)
2839 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2840 *filename_ptr
= main_file_name
;
2844 /* PR binutils/20891: In a corrupt input file both
2845 main_file_name and directory_name can be empty... */
2846 * filename_ptr
= NULL
;
2849 snprintf (buf
, filelen
+ 1, "%s%s", directory_name
,
2851 *filename_ptr
= buf
;
2859 const char *function
= func
->name
;
2864 /* PR binutils/20892: In a corrupt input file func can be empty. */
2865 * functionname_ptr
= NULL
;
2868 /* The caller expects a symbol name. We actually have a
2869 function name, without the leading underscore. Put the
2870 underscore back in, so that the caller gets a symbol name. */
2871 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2872 strcpy (buf
, function
);
2875 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2876 strcpy (buf
+ 1, function
);
2878 /* Have to remove : stuff. */
2879 colon
= strchr (buf
, ':');
2882 *functionname_ptr
= buf
;
2889 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2890 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2892 return adata (abfd
).exec_bytes_size
;
2895 /* Free all information we have cached for this BFD. We can always
2896 read it again later if we need it. */
2899 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2903 if (bfd_get_format (abfd
) != bfd_object
2904 || abfd
->tdata
.aout_data
== NULL
)
2907 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2908 BFCI_FREE (obj_aout_symbols (abfd
));
2910 obj_aout_external_syms (abfd
) = 0;
2911 bfd_free_window (&obj_aout_sym_window (abfd
));
2912 bfd_free_window (&obj_aout_string_window (abfd
));
2913 obj_aout_external_strings (abfd
) = 0;
2915 BFCI_FREE (obj_aout_external_syms (abfd
));
2916 BFCI_FREE (obj_aout_external_strings (abfd
));
2918 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2919 BFCI_FREE (o
->relocation
);
2925 /* a.out link code. */
2927 /* Routine to create an entry in an a.out link hash table. */
2929 struct bfd_hash_entry
*
2930 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2931 struct bfd_hash_table
*table
,
2934 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2936 /* Allocate the structure if it has not already been allocated by a
2939 ret
= (struct aout_link_hash_entry
*) bfd_hash_allocate (table
,
2944 /* Call the allocation method of the superclass. */
2945 ret
= ((struct aout_link_hash_entry
*)
2946 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2950 /* Set local fields. */
2951 ret
->written
= FALSE
;
2955 return (struct bfd_hash_entry
*) ret
;
2958 /* Initialize an a.out link hash table. */
2961 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2963 struct bfd_hash_entry
*(*newfunc
)
2964 (struct bfd_hash_entry
*, struct bfd_hash_table
*,
2966 unsigned int entsize
)
2968 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2971 /* Create an a.out link hash table. */
2973 struct bfd_link_hash_table
*
2974 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2976 struct aout_link_hash_table
*ret
;
2977 bfd_size_type amt
= sizeof (* ret
);
2979 ret
= (struct aout_link_hash_table
*) bfd_malloc (amt
);
2983 if (!NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2984 NAME (aout
, link_hash_newfunc
),
2985 sizeof (struct aout_link_hash_entry
)))
2993 /* Add all symbols from an object file to the hash table. */
2996 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2998 bfd_boolean (*add_one_symbol
)
2999 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
3000 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
3001 struct bfd_link_hash_entry
**);
3002 struct external_nlist
*syms
;
3003 bfd_size_type sym_count
;
3006 struct aout_link_hash_entry
**sym_hash
;
3007 struct external_nlist
*p
;
3008 struct external_nlist
*pend
;
3011 syms
= obj_aout_external_syms (abfd
);
3012 sym_count
= obj_aout_external_sym_count (abfd
);
3013 strings
= obj_aout_external_strings (abfd
);
3014 if (info
->keep_memory
)
3019 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
3021 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
3022 (abfd
, info
, &syms
, &sym_count
, &strings
)))
3027 return TRUE
; /* Nothing to do. */
3029 /* We keep a list of the linker hash table entries that correspond
3030 to particular symbols. We could just look them up in the hash
3031 table, but keeping the list is more efficient. Perhaps this
3032 should be conditional on info->keep_memory. */
3033 amt
= sym_count
* sizeof (struct aout_link_hash_entry
*);
3034 sym_hash
= (struct aout_link_hash_entry
**) bfd_alloc (abfd
, amt
);
3035 if (sym_hash
== NULL
)
3037 obj_aout_sym_hashes (abfd
) = sym_hash
;
3039 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
3040 if (add_one_symbol
== NULL
)
3041 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
3044 pend
= p
+ sym_count
;
3045 for (; p
< pend
; p
++, sym_hash
++)
3056 type
= H_GET_8 (abfd
, p
->e_type
);
3058 /* Ignore debugging symbols. */
3059 if ((type
& N_STAB
) != 0)
3062 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3063 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3065 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3066 value
= GET_WORD (abfd
, p
->e_value
);
3083 /* Ignore symbols that are not externally visible. */
3086 /* Ignore local indirect symbol. */
3091 case N_UNDF
| N_EXT
:
3094 section
= bfd_und_section_ptr
;
3098 section
= bfd_com_section_ptr
;
3101 section
= bfd_abs_section_ptr
;
3103 case N_TEXT
| N_EXT
:
3104 section
= obj_textsec (abfd
);
3105 value
-= bfd_get_section_vma (abfd
, section
);
3107 case N_DATA
| N_EXT
:
3108 case N_SETV
| N_EXT
:
3109 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3110 translate_from_native_sym_flags. */
3111 section
= obj_datasec (abfd
);
3112 value
-= bfd_get_section_vma (abfd
, section
);
3115 section
= obj_bsssec (abfd
);
3116 value
-= bfd_get_section_vma (abfd
, section
);
3118 case N_INDR
| N_EXT
:
3119 /* An indirect symbol. The next symbol is the symbol
3120 which this one really is. */
3121 /* See PR 20925 for a reproducer. */
3125 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3126 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3128 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3129 section
= bfd_ind_section_ptr
;
3130 flags
|= BSF_INDIRECT
;
3132 case N_COMM
| N_EXT
:
3133 section
= bfd_com_section_ptr
;
3135 case N_SETA
: case N_SETA
| N_EXT
:
3136 section
= bfd_abs_section_ptr
;
3137 flags
|= BSF_CONSTRUCTOR
;
3139 case N_SETT
: case N_SETT
| N_EXT
:
3140 section
= obj_textsec (abfd
);
3141 flags
|= BSF_CONSTRUCTOR
;
3142 value
-= bfd_get_section_vma (abfd
, section
);
3144 case N_SETD
: case N_SETD
| N_EXT
:
3145 section
= obj_datasec (abfd
);
3146 flags
|= BSF_CONSTRUCTOR
;
3147 value
-= bfd_get_section_vma (abfd
, section
);
3149 case N_SETB
: case N_SETB
| N_EXT
:
3150 section
= obj_bsssec (abfd
);
3151 flags
|= BSF_CONSTRUCTOR
;
3152 value
-= bfd_get_section_vma (abfd
, section
);
3155 /* A warning symbol. The next symbol is the one to warn
3156 about. If there is no next symbol, just look away. */
3161 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3162 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3164 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3165 section
= bfd_und_section_ptr
;
3166 flags
|= BSF_WARNING
;
3169 section
= bfd_und_section_ptr
;
3173 section
= bfd_abs_section_ptr
;
3177 section
= obj_textsec (abfd
);
3178 value
-= bfd_get_section_vma (abfd
, section
);
3182 section
= obj_datasec (abfd
);
3183 value
-= bfd_get_section_vma (abfd
, section
);
3187 section
= obj_bsssec (abfd
);
3188 value
-= bfd_get_section_vma (abfd
, section
);
3193 if (! ((*add_one_symbol
)
3194 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
3195 (struct bfd_link_hash_entry
**) sym_hash
)))
3198 /* Restrict the maximum alignment of a common symbol based on
3199 the architecture, since a.out has no way to represent
3200 alignment requirements of a section in a .o file. FIXME:
3201 This isn't quite right: it should use the architecture of the
3202 output file, not the input files. */
3203 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3204 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3205 bfd_get_arch_info (abfd
)->section_align_power
))
3206 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3207 bfd_get_arch_info (abfd
)->section_align_power
;
3209 /* If this is a set symbol, and we are not building sets, then
3210 it is possible for the hash entry to not have been set. In
3211 such a case, treat the symbol as not globally defined. */
3212 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3214 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3218 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3225 /* Free up the internal symbols read from an a.out file. */
3228 aout_link_free_symbols (bfd
*abfd
)
3230 if (obj_aout_external_syms (abfd
) != NULL
)
3233 bfd_free_window (&obj_aout_sym_window (abfd
));
3235 free ((void *) obj_aout_external_syms (abfd
));
3237 obj_aout_external_syms (abfd
) = NULL
;
3239 if (obj_aout_external_strings (abfd
) != NULL
)
3242 bfd_free_window (&obj_aout_string_window (abfd
));
3244 free ((void *) obj_aout_external_strings (abfd
));
3246 obj_aout_external_strings (abfd
) = NULL
;
3251 /* Add symbols from an a.out object file. */
3254 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3256 if (! aout_get_external_symbols (abfd
))
3258 if (! aout_link_add_symbols (abfd
, info
))
3260 if (! info
->keep_memory
)
3262 if (! aout_link_free_symbols (abfd
))
3268 /* Look through the internal symbols to see if this object file should
3269 be included in the link. We should include this object file if it
3270 defines any symbols which are currently undefined. If this object
3271 file defines a common symbol, then we may adjust the size of the
3272 known symbol but we do not include the object file in the link
3273 (unless there is some other reason to include it). */
3276 aout_link_check_ar_symbols (bfd
*abfd
,
3277 struct bfd_link_info
*info
,
3278 bfd_boolean
*pneeded
,
3281 struct external_nlist
*p
;
3282 struct external_nlist
*pend
;
3287 /* Look through all the symbols. */
3288 p
= obj_aout_external_syms (abfd
);
3289 pend
= p
+ obj_aout_external_sym_count (abfd
);
3290 strings
= obj_aout_external_strings (abfd
);
3291 for (; p
< pend
; p
++)
3293 int type
= H_GET_8 (abfd
, p
->e_type
);
3295 struct bfd_link_hash_entry
*h
;
3297 /* Ignore symbols that are not externally visible. This is an
3298 optimization only, as we check the type more thoroughly
3300 if (((type
& N_EXT
) == 0
3301 || (type
& N_STAB
) != 0
3308 if (type
== N_WARNING
3314 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3315 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
3317 /* We are only interested in symbols that are currently
3318 undefined or common. */
3320 || (h
->type
!= bfd_link_hash_undefined
3321 && h
->type
!= bfd_link_hash_common
))
3323 if (type
== (N_INDR
| N_EXT
))
3328 if (type
== (N_TEXT
| N_EXT
)
3329 || type
== (N_DATA
| N_EXT
)
3330 || type
== (N_BSS
| N_EXT
)
3331 || type
== (N_ABS
| N_EXT
)
3332 || type
== (N_INDR
| N_EXT
))
3334 /* This object file defines this symbol. We must link it
3335 in. This is true regardless of whether the current
3336 definition of the symbol is undefined or common.
3338 If the current definition is common, we have a case in
3339 which we have already seen an object file including:
3341 and this object file from the archive includes:
3343 In such a case, whether to include this object is target
3344 dependant for backward compatibility.
3346 FIXME: The SunOS 4.1.3 linker will pull in the archive
3347 element if the symbol is defined in the .data section,
3348 but not if it is defined in the .text section. That
3349 seems a bit crazy to me, and it has not been implemented
3350 yet. However, it might be correct. */
3351 if (h
->type
== bfd_link_hash_common
)
3355 switch (info
->common_skip_ar_symbols
)
3357 case bfd_link_common_skip_none
:
3359 case bfd_link_common_skip_text
:
3360 skip
= (type
== (N_TEXT
| N_EXT
));
3362 case bfd_link_common_skip_data
:
3363 skip
= (type
== (N_DATA
| N_EXT
));
3365 case bfd_link_common_skip_all
:
3374 if (!(*info
->callbacks
3375 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3381 if (type
== (N_UNDF
| N_EXT
))
3385 value
= GET_WORD (abfd
, p
->e_value
);
3388 /* This symbol is common in the object from the archive
3390 if (h
->type
== bfd_link_hash_undefined
)
3395 symbfd
= h
->u
.undef
.abfd
;
3398 /* This symbol was created as undefined from
3399 outside BFD. We assume that we should link
3400 in the object file. This is done for the -u
3401 option in the linker. */
3402 if (!(*info
->callbacks
3403 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3408 /* Turn the current link symbol into a common
3409 symbol. It is already on the undefs list. */
3410 h
->type
= bfd_link_hash_common
;
3411 h
->u
.c
.p
= (struct bfd_link_hash_common_entry
*)
3412 bfd_hash_allocate (&info
->hash
->table
,
3413 sizeof (struct bfd_link_hash_common_entry
));
3414 if (h
->u
.c
.p
== NULL
)
3417 h
->u
.c
.size
= value
;
3419 /* FIXME: This isn't quite right. The maximum
3420 alignment of a common symbol should be set by the
3421 architecture of the output file, not of the input
3423 power
= bfd_log2 (value
);
3424 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3425 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3426 h
->u
.c
.p
->alignment_power
= power
;
3428 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3433 /* Adjust the size of the common symbol if
3435 if (value
> h
->u
.c
.size
)
3436 h
->u
.c
.size
= value
;
3446 /* This symbol is weak but defined. We must pull it in if
3447 the current link symbol is undefined, but we don't want
3448 it if the current link symbol is common. */
3449 if (h
->type
== bfd_link_hash_undefined
)
3451 if (!(*info
->callbacks
3452 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3460 /* We do not need this object file. */
3463 /* Check a single archive element to see if we need to include it in
3464 the link. *PNEEDED is set according to whether this element is
3465 needed in the link or not. This is called from
3466 _bfd_generic_link_add_archive_symbols. */
3469 aout_link_check_archive_element (bfd
*abfd
,
3470 struct bfd_link_info
*info
,
3471 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
3472 const char *name ATTRIBUTE_UNUSED
,
3473 bfd_boolean
*pneeded
)
3478 if (!aout_get_external_symbols (abfd
))
3482 if (!aout_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
3488 /* Potentially, the add_archive_element hook may have set a
3489 substitute BFD for us. */
3492 if (!info
->keep_memory
3493 && !aout_link_free_symbols (oldbfd
))
3495 if (!aout_get_external_symbols (abfd
))
3498 if (!aout_link_add_symbols (abfd
, info
))
3502 if (!info
->keep_memory
|| !needed
)
3504 if (!aout_link_free_symbols (abfd
))
3511 /* Given an a.out BFD, add symbols to the global hash table as
3515 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
3517 switch (bfd_get_format (abfd
))
3520 return aout_link_add_object_symbols (abfd
, info
);
3522 return _bfd_generic_link_add_archive_symbols
3523 (abfd
, info
, aout_link_check_archive_element
);
3525 bfd_set_error (bfd_error_wrong_format
);
3530 /* A hash table used for header files with N_BINCL entries. */
3532 struct aout_link_includes_table
3534 struct bfd_hash_table root
;
3537 /* A linked list of totals that we have found for a particular header
3540 struct aout_link_includes_totals
3542 struct aout_link_includes_totals
*next
;
3546 /* An entry in the header file hash table. */
3548 struct aout_link_includes_entry
3550 struct bfd_hash_entry root
;
3551 /* List of totals we have found for this file. */
3552 struct aout_link_includes_totals
*totals
;
3555 /* Look up an entry in an the header file hash table. */
3557 #define aout_link_includes_lookup(table, string, create, copy) \
3558 ((struct aout_link_includes_entry *) \
3559 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3561 /* During the final link step we need to pass around a bunch of
3562 information, so we do it in an instance of this structure. */
3564 struct aout_final_link_info
3566 /* General link information. */
3567 struct bfd_link_info
*info
;
3570 /* Reloc file positions. */
3571 file_ptr treloff
, dreloff
;
3572 /* File position of symbols. */
3575 struct bfd_strtab_hash
*strtab
;
3576 /* Header file hash table. */
3577 struct aout_link_includes_table includes
;
3578 /* A buffer large enough to hold the contents of any section. */
3580 /* A buffer large enough to hold the relocs of any section. */
3582 /* A buffer large enough to hold the symbol map of any input BFD. */
3584 /* A buffer large enough to hold output symbols of any input BFD. */
3585 struct external_nlist
*output_syms
;
3588 /* The function to create a new entry in the header file hash table. */
3590 static struct bfd_hash_entry
*
3591 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
3592 struct bfd_hash_table
*table
,
3595 struct aout_link_includes_entry
*ret
=
3596 (struct aout_link_includes_entry
*) entry
;
3598 /* Allocate the structure if it has not already been allocated by a
3601 ret
= (struct aout_link_includes_entry
*)
3602 bfd_hash_allocate (table
, sizeof (* ret
));
3606 /* Call the allocation method of the superclass. */
3607 ret
= ((struct aout_link_includes_entry
*)
3608 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3611 /* Set local fields. */
3615 return (struct bfd_hash_entry
*) ret
;
3618 /* Write out a symbol that was not associated with an a.out input
3622 aout_link_write_other_symbol (struct bfd_hash_entry
*bh
, void *data
)
3624 struct aout_link_hash_entry
*h
= (struct aout_link_hash_entry
*) bh
;
3625 struct aout_final_link_info
*flaginfo
= (struct aout_final_link_info
*) data
;
3629 struct external_nlist outsym
;
3633 if (h
->root
.type
== bfd_link_hash_warning
)
3635 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
3636 if (h
->root
.type
== bfd_link_hash_new
)
3640 output_bfd
= flaginfo
->output_bfd
;
3642 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
3644 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
3645 (output_bfd
, flaginfo
->info
, h
)))
3647 /* FIXME: No way to handle errors. */
3657 /* An indx of -2 means the symbol must be written. */
3659 && (flaginfo
->info
->strip
== strip_all
3660 || (flaginfo
->info
->strip
== strip_some
3661 && bfd_hash_lookup (flaginfo
->info
->keep_hash
, h
->root
.root
.string
,
3662 FALSE
, FALSE
) == NULL
)))
3665 switch (h
->root
.type
)
3668 case bfd_link_hash_warning
:
3670 /* Avoid variable not initialized warnings. */
3672 case bfd_link_hash_new
:
3673 /* This can happen for set symbols when sets are not being
3676 case bfd_link_hash_undefined
:
3677 type
= N_UNDF
| N_EXT
;
3680 case bfd_link_hash_defined
:
3681 case bfd_link_hash_defweak
:
3685 sec
= h
->root
.u
.def
.section
->output_section
;
3686 BFD_ASSERT (bfd_is_abs_section (sec
)
3687 || sec
->owner
== output_bfd
);
3688 if (sec
== obj_textsec (output_bfd
))
3689 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
3690 else if (sec
== obj_datasec (output_bfd
))
3691 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
3692 else if (sec
== obj_bsssec (output_bfd
))
3693 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
3695 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
3697 val
= (h
->root
.u
.def
.value
3699 + h
->root
.u
.def
.section
->output_offset
);
3702 case bfd_link_hash_common
:
3703 type
= N_UNDF
| N_EXT
;
3704 val
= h
->root
.u
.c
.size
;
3706 case bfd_link_hash_undefweak
:
3710 case bfd_link_hash_indirect
:
3711 /* We ignore these symbols, since the indirected symbol is
3712 already in the hash table. */
3716 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
3717 H_PUT_8 (output_bfd
, 0, outsym
.e_other
);
3718 H_PUT_16 (output_bfd
, 0, outsym
.e_desc
);
3719 indx
= add_to_stringtab (output_bfd
, flaginfo
->strtab
, h
->root
.root
.string
,
3721 if (indx
== - (bfd_size_type
) 1)
3722 /* FIXME: No way to handle errors. */
3725 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3726 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3728 amt
= EXTERNAL_NLIST_SIZE
;
3729 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0
3730 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3731 /* FIXME: No way to handle errors. */
3734 flaginfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
3735 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3736 ++obj_aout_external_sym_count (output_bfd
);
3741 /* Handle a link order which is supposed to generate a reloc. */
3744 aout_link_reloc_link_order (struct aout_final_link_info
*flaginfo
,
3746 struct bfd_link_order
*p
)
3748 struct bfd_link_order_reloc
*pr
;
3751 reloc_howto_type
*howto
;
3752 file_ptr
*reloff_ptr
= NULL
;
3753 struct reloc_std_external srel
;
3754 struct reloc_ext_external erel
;
3760 if (p
->type
== bfd_section_reloc_link_order
)
3763 if (bfd_is_abs_section (pr
->u
.section
))
3764 r_index
= N_ABS
| N_EXT
;
3767 BFD_ASSERT (pr
->u
.section
->owner
== flaginfo
->output_bfd
);
3768 r_index
= pr
->u
.section
->target_index
;
3773 struct aout_link_hash_entry
*h
;
3775 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3777 h
= ((struct aout_link_hash_entry
*)
3778 bfd_wrapped_link_hash_lookup (flaginfo
->output_bfd
, flaginfo
->info
,
3779 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3785 /* We decided to strip this symbol, but it turns out that we
3786 can't. Note that we lose the other and desc information
3787 here. I don't think that will ever matter for a global
3791 if (!aout_link_write_other_symbol (&h
->root
.root
, flaginfo
))
3797 (*flaginfo
->info
->callbacks
->unattached_reloc
)
3798 (flaginfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
3803 howto
= bfd_reloc_type_lookup (flaginfo
->output_bfd
, pr
->reloc
);
3806 bfd_set_error (bfd_error_bad_value
);
3810 if (o
== obj_textsec (flaginfo
->output_bfd
))
3811 reloff_ptr
= &flaginfo
->treloff
;
3812 else if (o
== obj_datasec (flaginfo
->output_bfd
))
3813 reloff_ptr
= &flaginfo
->dreloff
;
3817 if (obj_reloc_entry_size (flaginfo
->output_bfd
) == RELOC_STD_SIZE
)
3820 MY_put_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3830 r_pcrel
= (int) howto
->pc_relative
;
3831 r_baserel
= (howto
->type
& 8) != 0;
3832 r_jmptable
= (howto
->type
& 16) != 0;
3833 r_relative
= (howto
->type
& 32) != 0;
3834 r_length
= howto
->size
;
3836 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, srel
.r_address
);
3837 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3839 srel
.r_index
[0] = r_index
>> 16;
3840 srel
.r_index
[1] = r_index
>> 8;
3841 srel
.r_index
[2] = r_index
;
3843 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3844 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3845 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3846 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3847 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3848 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3852 srel
.r_index
[2] = r_index
>> 16;
3853 srel
.r_index
[1] = r_index
>> 8;
3854 srel
.r_index
[0] = r_index
;
3856 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3857 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3858 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3859 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3860 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3861 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3865 rel_ptr
= (void *) &srel
;
3867 /* We have to write the addend into the object file, since
3868 standard a.out relocs are in place. It would be more
3869 reliable if we had the current contents of the file here,
3870 rather than assuming zeroes, but we can't read the file since
3871 it was opened using bfd_openw. */
3872 if (pr
->addend
!= 0)
3875 bfd_reloc_status_type r
;
3879 size
= bfd_get_reloc_size (howto
);
3880 buf
= (bfd_byte
*) bfd_zmalloc (size
);
3881 if (buf
== NULL
&& size
!= 0)
3883 r
= MY_relocate_contents (howto
, flaginfo
->output_bfd
,
3884 (bfd_vma
) pr
->addend
, buf
);
3890 case bfd_reloc_outofrange
:
3892 case bfd_reloc_overflow
:
3893 (*flaginfo
->info
->callbacks
->reloc_overflow
)
3894 (flaginfo
->info
, NULL
,
3895 (p
->type
== bfd_section_reloc_link_order
3896 ? bfd_section_name (flaginfo
->output_bfd
,
3899 howto
->name
, pr
->addend
, NULL
, NULL
, (bfd_vma
) 0);
3902 ok
= bfd_set_section_contents (flaginfo
->output_bfd
, o
, (void *) buf
,
3903 (file_ptr
) p
->offset
, size
);
3911 #ifdef MY_put_ext_reloc
3912 MY_put_ext_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
3913 howto
, &erel
, pr
->addend
);
3915 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, erel
.r_address
);
3917 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3919 erel
.r_index
[0] = r_index
>> 16;
3920 erel
.r_index
[1] = r_index
>> 8;
3921 erel
.r_index
[2] = r_index
;
3923 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
3924 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
3928 erel
.r_index
[2] = r_index
>> 16;
3929 erel
.r_index
[1] = r_index
>> 8;
3930 erel
.r_index
[0] = r_index
;
3932 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
3933 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
3936 PUT_WORD (flaginfo
->output_bfd
, (bfd_vma
) pr
->addend
, erel
.r_addend
);
3937 #endif /* MY_put_ext_reloc */
3939 rel_ptr
= (void *) &erel
;
3942 amt
= obj_reloc_entry_size (flaginfo
->output_bfd
);
3943 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3944 || bfd_bwrite (rel_ptr
, amt
, flaginfo
->output_bfd
) != amt
)
3947 *reloff_ptr
+= obj_reloc_entry_size (flaginfo
->output_bfd
);
3949 /* Assert that the relocs have not run into the symbols, and that n
3950 the text relocs have not run into the data relocs. */
3951 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3952 && (reloff_ptr
!= &flaginfo
->treloff
3954 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3959 /* Get the section corresponding to a reloc index. */
3961 static INLINE asection
*
3962 aout_reloc_index_to_section (bfd
*abfd
, int indx
)
3964 switch (indx
& N_TYPE
)
3966 case N_TEXT
: return obj_textsec (abfd
);
3967 case N_DATA
: return obj_datasec (abfd
);
3968 case N_BSS
: return obj_bsssec (abfd
);
3970 case N_UNDF
: return bfd_abs_section_ptr
;
3976 /* Relocate an a.out section using standard a.out relocs. */
3979 aout_link_input_section_std (struct aout_final_link_info
*flaginfo
,
3981 asection
*input_section
,
3982 struct reloc_std_external
*relocs
,
3983 bfd_size_type rel_size
,
3986 bfd_boolean (*check_dynamic_reloc
)
3987 (struct bfd_link_info
*, bfd
*, asection
*,
3988 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3991 bfd_boolean relocatable
;
3992 struct external_nlist
*syms
;
3994 struct aout_link_hash_entry
**sym_hashes
;
3996 bfd_size_type reloc_count
;
3997 struct reloc_std_external
*rel
;
3998 struct reloc_std_external
*rel_end
;
4000 output_bfd
= flaginfo
->output_bfd
;
4001 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4003 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
4004 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4005 == output_bfd
->xvec
->header_byteorder
);
4007 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4008 syms
= obj_aout_external_syms (input_bfd
);
4009 strings
= obj_aout_external_strings (input_bfd
);
4010 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4011 symbol_map
= flaginfo
->symbol_map
;
4013 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
4015 rel_end
= rel
+ reloc_count
;
4016 for (; rel
< rel_end
; rel
++)
4023 reloc_howto_type
*howto
;
4024 struct aout_link_hash_entry
*h
= NULL
;
4026 bfd_reloc_status_type r
;
4028 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4030 #ifdef MY_reloc_howto
4031 howto
= MY_reloc_howto (input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
4037 unsigned int howto_idx
;
4039 if (bfd_header_big_endian (input_bfd
))
4041 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4042 | ((unsigned int) rel
->r_index
[1] << 8)
4044 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
4045 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
4046 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
4047 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
4048 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
4049 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
4050 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
4054 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4055 | ((unsigned int) rel
->r_index
[1] << 8)
4057 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
4058 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
4059 r_baserel
= (0 != (rel
->r_type
[0]
4060 & RELOC_STD_BITS_BASEREL_LITTLE
));
4061 r_jmptable
= (0 != (rel
->r_type
[0]
4062 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
4063 r_relative
= (0 != (rel
->r_type
[0]
4064 & RELOC_STD_BITS_RELATIVE_LITTLE
));
4065 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
4066 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
4069 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
4070 + 16 * r_jmptable
+ 32 * r_relative
);
4071 if (howto_idx
< TABLE_SIZE (howto_table_std
))
4072 howto
= howto_table_std
+ howto_idx
;
4080 _bfd_error_handler (_("%pB: unsupported relocation type"),
4082 bfd_set_error (bfd_error_bad_value
);
4088 /* We are generating a relocatable output file, and must
4089 modify the reloc accordingly. */
4092 /* If we know the symbol this relocation is against,
4093 convert it into a relocation against a section. This
4094 is what the native linker does. */
4095 h
= sym_hashes
[r_index
];
4097 && (h
->root
.type
== bfd_link_hash_defined
4098 || h
->root
.type
== bfd_link_hash_defweak
))
4100 asection
*output_section
;
4102 /* Change the r_extern value. */
4103 if (bfd_header_big_endian (output_bfd
))
4104 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
4106 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
4108 /* Compute a new r_index. */
4109 output_section
= h
->root
.u
.def
.section
->output_section
;
4110 if (output_section
== obj_textsec (output_bfd
))
4112 else if (output_section
== obj_datasec (output_bfd
))
4114 else if (output_section
== obj_bsssec (output_bfd
))
4119 /* Add the symbol value and the section VMA to the
4120 addend stored in the contents. */
4121 relocation
= (h
->root
.u
.def
.value
4122 + output_section
->vma
4123 + h
->root
.u
.def
.section
->output_offset
);
4127 /* We must change r_index according to the symbol
4129 r_index
= symbol_map
[r_index
];
4135 /* We decided to strip this symbol, but it
4136 turns out that we can't. Note that we
4137 lose the other and desc information here.
4138 I don't think that will ever matter for a
4144 if (!aout_link_write_other_symbol (&h
->root
.root
,
4154 name
= strings
+ GET_WORD (input_bfd
,
4155 syms
[r_index
].e_strx
);
4156 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4157 (flaginfo
->info
, name
,
4158 input_bfd
, input_section
, r_addr
);
4166 /* Write out the new r_index value. */
4167 if (bfd_header_big_endian (output_bfd
))
4169 rel
->r_index
[0] = r_index
>> 16;
4170 rel
->r_index
[1] = r_index
>> 8;
4171 rel
->r_index
[2] = r_index
;
4175 rel
->r_index
[2] = r_index
>> 16;
4176 rel
->r_index
[1] = r_index
>> 8;
4177 rel
->r_index
[0] = r_index
;
4184 /* This is a relocation against a section. We must
4185 adjust by the amount that the section moved. */
4186 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4187 relocation
= (section
->output_section
->vma
4188 + section
->output_offset
4192 /* Change the address of the relocation. */
4193 PUT_WORD (output_bfd
,
4194 r_addr
+ input_section
->output_offset
,
4197 /* Adjust a PC relative relocation by removing the reference
4198 to the original address in the section and including the
4199 reference to the new address. */
4201 relocation
-= (input_section
->output_section
->vma
4202 + input_section
->output_offset
4203 - input_section
->vma
);
4205 #ifdef MY_relocatable_reloc
4206 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4209 if (relocation
== 0)
4212 r
= MY_relocate_contents (howto
,
4213 input_bfd
, relocation
,
4220 /* We are generating an executable, and must do a full
4226 h
= sym_hashes
[r_index
];
4229 && (h
->root
.type
== bfd_link_hash_defined
4230 || h
->root
.type
== bfd_link_hash_defweak
))
4232 relocation
= (h
->root
.u
.def
.value
4233 + h
->root
.u
.def
.section
->output_section
->vma
4234 + h
->root
.u
.def
.section
->output_offset
);
4237 && h
->root
.type
== bfd_link_hash_undefweak
)
4249 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4250 relocation
= (section
->output_section
->vma
4251 + section
->output_offset
4254 relocation
+= input_section
->vma
;
4257 if (check_dynamic_reloc
!= NULL
)
4261 if (! ((*check_dynamic_reloc
)
4262 (flaginfo
->info
, input_bfd
, input_section
, h
,
4263 (void *) rel
, contents
, &skip
, &relocation
)))
4269 /* Now warn if a global symbol is undefined. We could not
4270 do this earlier, because check_dynamic_reloc might want
4271 to skip this reloc. */
4272 if (hundef
&& ! bfd_link_pic (flaginfo
->info
) && ! r_baserel
)
4277 name
= h
->root
.root
.string
;
4279 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4280 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4281 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4284 r
= MY_final_link_relocate (howto
,
4285 input_bfd
, input_section
,
4286 contents
, r_addr
, relocation
,
4290 if (r
!= bfd_reloc_ok
)
4295 case bfd_reloc_outofrange
:
4297 case bfd_reloc_overflow
:
4304 name
= strings
+ GET_WORD (input_bfd
,
4305 syms
[r_index
].e_strx
);
4310 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4311 name
= bfd_section_name (input_bfd
, s
);
4313 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4314 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
4315 (bfd_vma
) 0, input_bfd
, input_section
, r_addr
);
4325 /* Relocate an a.out section using extended a.out relocs. */
4328 aout_link_input_section_ext (struct aout_final_link_info
*flaginfo
,
4330 asection
*input_section
,
4331 struct reloc_ext_external
*relocs
,
4332 bfd_size_type rel_size
,
4335 bfd_boolean (*check_dynamic_reloc
)
4336 (struct bfd_link_info
*, bfd
*, asection
*,
4337 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
4340 bfd_boolean relocatable
;
4341 struct external_nlist
*syms
;
4343 struct aout_link_hash_entry
**sym_hashes
;
4345 bfd_size_type reloc_count
;
4346 struct reloc_ext_external
*rel
;
4347 struct reloc_ext_external
*rel_end
;
4349 output_bfd
= flaginfo
->output_bfd
;
4350 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4352 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
4353 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4354 == output_bfd
->xvec
->header_byteorder
);
4356 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4357 syms
= obj_aout_external_syms (input_bfd
);
4358 strings
= obj_aout_external_strings (input_bfd
);
4359 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4360 symbol_map
= flaginfo
->symbol_map
;
4362 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
4364 rel_end
= rel
+ reloc_count
;
4365 for (; rel
< rel_end
; rel
++)
4370 unsigned int r_type
;
4372 struct aout_link_hash_entry
*h
= NULL
;
4373 asection
*r_section
= NULL
;
4376 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4378 if (bfd_header_big_endian (input_bfd
))
4380 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4381 | ((unsigned int) rel
->r_index
[1] << 8)
4383 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
4384 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
4385 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
4389 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4390 | ((unsigned int) rel
->r_index
[1] << 8)
4392 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
4393 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
4394 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
4397 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
4399 if (r_type
>= TABLE_SIZE (howto_table_ext
))
4401 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4403 bfd_set_error (bfd_error_bad_value
);
4409 /* We are generating a relocatable output file, and must
4410 modify the reloc accordingly. */
4412 || r_type
== (unsigned int) RELOC_BASE10
4413 || r_type
== (unsigned int) RELOC_BASE13
4414 || r_type
== (unsigned int) RELOC_BASE22
)
4416 /* If we know the symbol this relocation is against,
4417 convert it into a relocation against a section. This
4418 is what the native linker does. */
4419 if (r_type
== (unsigned int) RELOC_BASE10
4420 || r_type
== (unsigned int) RELOC_BASE13
4421 || r_type
== (unsigned int) RELOC_BASE22
)
4424 h
= sym_hashes
[r_index
];
4426 && (h
->root
.type
== bfd_link_hash_defined
4427 || h
->root
.type
== bfd_link_hash_defweak
))
4429 asection
*output_section
;
4431 /* Change the r_extern value. */
4432 if (bfd_header_big_endian (output_bfd
))
4433 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
4435 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
4437 /* Compute a new r_index. */
4438 output_section
= h
->root
.u
.def
.section
->output_section
;
4439 if (output_section
== obj_textsec (output_bfd
))
4441 else if (output_section
== obj_datasec (output_bfd
))
4443 else if (output_section
== obj_bsssec (output_bfd
))
4448 /* Add the symbol value and the section VMA to the
4450 relocation
= (h
->root
.u
.def
.value
4451 + output_section
->vma
4452 + h
->root
.u
.def
.section
->output_offset
);
4454 /* Now RELOCATION is the VMA of the final
4455 destination. If this is a PC relative reloc,
4456 then ADDEND is the negative of the source VMA.
4457 We want to set ADDEND to the difference between
4458 the destination VMA and the source VMA, which
4459 means we must adjust RELOCATION by the change in
4460 the source VMA. This is done below. */
4464 /* We must change r_index according to the symbol
4466 r_index
= symbol_map
[r_index
];
4472 /* We decided to strip this symbol, but it
4473 turns out that we can't. Note that we
4474 lose the other and desc information here.
4475 I don't think that will ever matter for a
4481 if (!aout_link_write_other_symbol (&h
->root
.root
,
4491 name
= strings
+ GET_WORD (input_bfd
,
4492 syms
[r_index
].e_strx
);
4493 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4494 (flaginfo
->info
, name
,
4495 input_bfd
, input_section
, r_addr
);
4502 /* If this is a PC relative reloc, then the addend
4503 is the negative of the source VMA. We must
4504 adjust it by the change in the source VMA. This
4508 /* Write out the new r_index value. */
4509 if (bfd_header_big_endian (output_bfd
))
4511 rel
->r_index
[0] = r_index
>> 16;
4512 rel
->r_index
[1] = r_index
>> 8;
4513 rel
->r_index
[2] = r_index
;
4517 rel
->r_index
[2] = r_index
>> 16;
4518 rel
->r_index
[1] = r_index
>> 8;
4519 rel
->r_index
[0] = r_index
;
4524 /* This is a relocation against a section. We must
4525 adjust by the amount that the section moved. */
4526 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4527 relocation
= (r_section
->output_section
->vma
4528 + r_section
->output_offset
4531 /* If this is a PC relative reloc, then the addend is
4532 the difference in VMA between the destination and the
4533 source. We have just adjusted for the change in VMA
4534 of the destination, so we must also adjust by the
4535 change in VMA of the source. This is done below. */
4538 /* As described above, we must always adjust a PC relative
4539 reloc by the change in VMA of the source. However, if
4540 pcrel_offset is set, then the addend does not include the
4541 location within the section, in which case we don't need
4542 to adjust anything. */
4543 if (howto_table_ext
[r_type
].pc_relative
4544 && ! howto_table_ext
[r_type
].pcrel_offset
)
4545 relocation
-= (input_section
->output_section
->vma
4546 + input_section
->output_offset
4547 - input_section
->vma
);
4549 /* Change the addend if necessary. */
4550 if (relocation
!= 0)
4551 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
4553 /* Change the address of the relocation. */
4554 PUT_WORD (output_bfd
,
4555 r_addr
+ input_section
->output_offset
,
4561 bfd_reloc_status_type r
;
4563 /* We are generating an executable, and must do a full
4569 h
= sym_hashes
[r_index
];
4572 && (h
->root
.type
== bfd_link_hash_defined
4573 || h
->root
.type
== bfd_link_hash_defweak
))
4575 relocation
= (h
->root
.u
.def
.value
4576 + h
->root
.u
.def
.section
->output_section
->vma
4577 + h
->root
.u
.def
.section
->output_offset
);
4580 && h
->root
.type
== bfd_link_hash_undefweak
)
4588 else if (r_type
== (unsigned int) RELOC_BASE10
4589 || r_type
== (unsigned int) RELOC_BASE13
4590 || r_type
== (unsigned int) RELOC_BASE22
)
4592 struct external_nlist
*sym
;
4595 /* For base relative relocs, r_index is always an index
4596 into the symbol table, even if r_extern is 0. */
4597 sym
= syms
+ r_index
;
4598 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4599 if ((type
& N_TYPE
) == N_TEXT
4601 r_section
= obj_textsec (input_bfd
);
4602 else if ((type
& N_TYPE
) == N_DATA
4604 r_section
= obj_datasec (input_bfd
);
4605 else if ((type
& N_TYPE
) == N_BSS
4607 r_section
= obj_bsssec (input_bfd
);
4608 else if ((type
& N_TYPE
) == N_ABS
4610 r_section
= bfd_abs_section_ptr
;
4613 relocation
= (r_section
->output_section
->vma
4614 + r_section
->output_offset
4615 + (GET_WORD (input_bfd
, sym
->e_value
)
4620 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4622 /* If this is a PC relative reloc, then R_ADDEND is the
4623 difference between the two vmas, or
4624 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4626 old_dest_sec == section->vma
4628 old_src_sec == input_section->vma
4630 old_src_off == r_addr
4632 _bfd_final_link_relocate expects RELOCATION +
4633 R_ADDEND to be the VMA of the destination minus
4634 r_addr (the minus r_addr is because this relocation
4635 is not pcrel_offset, which is a bit confusing and
4636 should, perhaps, be changed), or
4639 new_dest_sec == output_section->vma + output_offset
4640 We arrange for this to happen by setting RELOCATION to
4641 new_dest_sec + old_src_sec - old_dest_sec
4643 If this is not a PC relative reloc, then R_ADDEND is
4644 simply the VMA of the destination, so we set
4645 RELOCATION to the change in the destination VMA, or
4646 new_dest_sec - old_dest_sec
4648 relocation
= (r_section
->output_section
->vma
4649 + r_section
->output_offset
4651 if (howto_table_ext
[r_type
].pc_relative
)
4652 relocation
+= input_section
->vma
;
4655 if (check_dynamic_reloc
!= NULL
)
4659 if (! ((*check_dynamic_reloc
)
4660 (flaginfo
->info
, input_bfd
, input_section
, h
,
4661 (void *) rel
, contents
, &skip
, &relocation
)))
4667 /* Now warn if a global symbol is undefined. We could not
4668 do this earlier, because check_dynamic_reloc might want
4669 to skip this reloc. */
4671 && ! bfd_link_pic (flaginfo
->info
)
4672 && r_type
!= (unsigned int) RELOC_BASE10
4673 && r_type
!= (unsigned int) RELOC_BASE13
4674 && r_type
!= (unsigned int) RELOC_BASE22
)
4679 name
= h
->root
.root
.string
;
4681 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4682 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4683 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4686 if (r_type
!= (unsigned int) RELOC_SPARC_REV32
)
4687 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
4688 input_bfd
, input_section
,
4689 contents
, r_addr
, relocation
,
4695 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
4696 x
= x
+ relocation
+ r_addend
;
4697 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
4701 if (r
!= bfd_reloc_ok
)
4706 case bfd_reloc_outofrange
:
4708 case bfd_reloc_overflow
:
4715 || r_type
== (unsigned int) RELOC_BASE10
4716 || r_type
== (unsigned int) RELOC_BASE13
4717 || r_type
== (unsigned int) RELOC_BASE22
)
4718 name
= strings
+ GET_WORD (input_bfd
,
4719 syms
[r_index
].e_strx
);
4724 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4725 name
= bfd_section_name (input_bfd
, s
);
4727 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4728 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
,
4729 howto_table_ext
[r_type
].name
,
4730 r_addend
, input_bfd
, input_section
, r_addr
);
4741 /* Link an a.out section into the output file. */
4744 aout_link_input_section (struct aout_final_link_info
*flaginfo
,
4746 asection
*input_section
,
4747 file_ptr
*reloff_ptr
,
4748 bfd_size_type rel_size
)
4750 bfd_size_type input_size
;
4753 /* Get the section contents. */
4754 input_size
= input_section
->size
;
4755 if (! bfd_get_section_contents (input_bfd
, input_section
,
4756 (void *) flaginfo
->contents
,
4757 (file_ptr
) 0, input_size
))
4760 /* Read in the relocs if we haven't already done it. */
4761 if (aout_section_data (input_section
) != NULL
4762 && aout_section_data (input_section
)->relocs
!= NULL
)
4763 relocs
= aout_section_data (input_section
)->relocs
;
4766 relocs
= flaginfo
->relocs
;
4769 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4770 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
4775 /* Relocate the section contents. */
4776 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4778 if (! aout_link_input_section_std (flaginfo
, input_bfd
, input_section
,
4779 (struct reloc_std_external
*) relocs
,
4780 rel_size
, flaginfo
->contents
))
4785 if (! aout_link_input_section_ext (flaginfo
, input_bfd
, input_section
,
4786 (struct reloc_ext_external
*) relocs
,
4787 rel_size
, flaginfo
->contents
))
4791 /* Write out the section contents. */
4792 if (! bfd_set_section_contents (flaginfo
->output_bfd
,
4793 input_section
->output_section
,
4794 (void *) flaginfo
->contents
,
4795 (file_ptr
) input_section
->output_offset
,
4799 /* If we are producing relocatable output, the relocs were
4800 modified, and we now write them out. */
4801 if (bfd_link_relocatable (flaginfo
->info
) && rel_size
> 0)
4803 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4805 if (bfd_bwrite (relocs
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
4807 *reloff_ptr
+= rel_size
;
4809 /* Assert that the relocs have not run into the symbols, and
4810 that if these are the text relocs they have not run into the
4812 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
4813 && (reloff_ptr
!= &flaginfo
->treloff
4815 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
4821 /* Adjust and write out the symbols for an a.out file. Set the new
4822 symbol indices into a symbol_map. */
4825 aout_link_write_symbols (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
4828 bfd_size_type sym_count
;
4830 enum bfd_link_strip strip
;
4831 enum bfd_link_discard discard
;
4832 struct external_nlist
*outsym
;
4833 bfd_size_type strtab_index
;
4834 struct external_nlist
*sym
;
4835 struct external_nlist
*sym_end
;
4836 struct aout_link_hash_entry
**sym_hash
;
4839 bfd_boolean skip_next
;
4841 output_bfd
= flaginfo
->output_bfd
;
4842 sym_count
= obj_aout_external_sym_count (input_bfd
);
4843 strings
= obj_aout_external_strings (input_bfd
);
4844 strip
= flaginfo
->info
->strip
;
4845 discard
= flaginfo
->info
->discard
;
4846 outsym
= flaginfo
->output_syms
;
4848 /* First write out a symbol for this object file, unless we are
4849 discarding such symbols. */
4850 if (strip
!= strip_all
4851 && (strip
!= strip_some
4852 || bfd_hash_lookup (flaginfo
->info
->keep_hash
, input_bfd
->filename
,
4853 FALSE
, FALSE
) != NULL
)
4854 && discard
!= discard_all
)
4856 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4857 H_PUT_8 (output_bfd
, 0, outsym
->e_other
);
4858 H_PUT_16 (output_bfd
, 0, outsym
->e_desc
);
4859 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4860 input_bfd
->filename
, FALSE
);
4861 if (strtab_index
== (bfd_size_type
) -1)
4863 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4864 PUT_WORD (output_bfd
,
4865 (bfd_get_section_vma (output_bfd
,
4866 obj_textsec (input_bfd
)->output_section
)
4867 + obj_textsec (input_bfd
)->output_offset
),
4869 ++obj_aout_external_sym_count (output_bfd
);
4875 sym
= obj_aout_external_syms (input_bfd
);
4876 sym_end
= sym
+ sym_count
;
4877 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4878 symbol_map
= flaginfo
->symbol_map
;
4879 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4880 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4884 struct aout_link_hash_entry
*h
;
4890 /* We set *symbol_map to 0 above for all symbols. If it has
4891 already been set to -1 for this symbol, it means that we are
4892 discarding it because it appears in a duplicate header file.
4893 See the N_BINCL code below. */
4894 if (*symbol_map
== -1)
4897 /* Initialize *symbol_map to -1, which means that the symbol was
4898 not copied into the output file. We will change it later if
4899 we do copy the symbol over. */
4902 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4903 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4909 /* Pass this symbol through. It is the target of an
4910 indirect or warning symbol. */
4911 val
= GET_WORD (input_bfd
, sym
->e_value
);
4916 /* Skip this symbol, which is the target of an indirect
4917 symbol that we have changed to no longer be an indirect
4924 struct aout_link_hash_entry
*hresolve
;
4926 /* We have saved the hash table entry for this symbol, if
4927 there is one. Note that we could just look it up again
4928 in the hash table, provided we first check that it is an
4932 /* Use the name from the hash table, in case the symbol was
4935 && h
->root
.type
!= bfd_link_hash_warning
)
4936 name
= h
->root
.root
.string
;
4938 /* If this is an indirect or warning symbol, then change
4939 hresolve to the base symbol. We also change *sym_hash so
4940 that the relocation routines relocate against the real
4943 if (h
!= (struct aout_link_hash_entry
*) NULL
4944 && (h
->root
.type
== bfd_link_hash_indirect
4945 || h
->root
.type
== bfd_link_hash_warning
))
4947 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4948 while (hresolve
->root
.type
== bfd_link_hash_indirect
4949 || hresolve
->root
.type
== bfd_link_hash_warning
)
4950 hresolve
= ((struct aout_link_hash_entry
*)
4951 hresolve
->root
.u
.i
.link
);
4952 *sym_hash
= hresolve
;
4955 /* If the symbol has already been written out, skip it. */
4959 if ((type
& N_TYPE
) == N_INDR
4960 || type
== N_WARNING
)
4962 *symbol_map
= h
->indx
;
4966 /* See if we are stripping this symbol. */
4972 case strip_debugger
:
4973 if ((type
& N_STAB
) != 0)
4977 if (bfd_hash_lookup (flaginfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4992 /* Get the value of the symbol. */
4993 if ((type
& N_TYPE
) == N_TEXT
4995 symsec
= obj_textsec (input_bfd
);
4996 else if ((type
& N_TYPE
) == N_DATA
4998 symsec
= obj_datasec (input_bfd
);
4999 else if ((type
& N_TYPE
) == N_BSS
5001 symsec
= obj_bsssec (input_bfd
);
5002 else if ((type
& N_TYPE
) == N_ABS
5004 symsec
= bfd_abs_section_ptr
;
5005 else if (((type
& N_TYPE
) == N_INDR
5006 && (hresolve
== NULL
5007 || (hresolve
->root
.type
!= bfd_link_hash_defined
5008 && hresolve
->root
.type
!= bfd_link_hash_defweak
5009 && hresolve
->root
.type
!= bfd_link_hash_common
)))
5010 || type
== N_WARNING
)
5012 /* Pass the next symbol through unchanged. The
5013 condition above for indirect symbols is so that if
5014 the indirect symbol was defined, we output it with
5015 the correct definition so the debugger will
5018 val
= GET_WORD (input_bfd
, sym
->e_value
);
5021 else if ((type
& N_STAB
) != 0)
5023 val
= GET_WORD (input_bfd
, sym
->e_value
);
5028 /* If we get here with an indirect symbol, it means that
5029 we are outputting it with a real definition. In such
5030 a case we do not want to output the next symbol,
5031 which is the target of the indirection. */
5032 if ((type
& N_TYPE
) == N_INDR
)
5037 /* We need to get the value from the hash table. We use
5038 hresolve so that if we have defined an indirect
5039 symbol we output the final definition. */
5042 switch (type
& N_TYPE
)
5045 symsec
= obj_textsec (input_bfd
);
5048 symsec
= obj_datasec (input_bfd
);
5051 symsec
= obj_bsssec (input_bfd
);
5054 symsec
= bfd_abs_section_ptr
;
5061 else if (hresolve
->root
.type
== bfd_link_hash_defined
5062 || hresolve
->root
.type
== bfd_link_hash_defweak
)
5064 asection
*input_section
;
5065 asection
*output_section
;
5067 /* This case usually means a common symbol which was
5068 turned into a defined symbol. */
5069 input_section
= hresolve
->root
.u
.def
.section
;
5070 output_section
= input_section
->output_section
;
5071 BFD_ASSERT (bfd_is_abs_section (output_section
)
5072 || output_section
->owner
== output_bfd
);
5073 val
= (hresolve
->root
.u
.def
.value
5074 + bfd_get_section_vma (output_bfd
, output_section
)
5075 + input_section
->output_offset
);
5077 /* Get the correct type based on the section. If
5078 this is a constructed set, force it to be
5079 globally visible. */
5088 if (output_section
== obj_textsec (output_bfd
))
5089 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5092 else if (output_section
== obj_datasec (output_bfd
))
5093 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5096 else if (output_section
== obj_bsssec (output_bfd
))
5097 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5101 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5105 else if (hresolve
->root
.type
== bfd_link_hash_common
)
5106 val
= hresolve
->root
.u
.c
.size
;
5107 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
5116 val
= (symsec
->output_section
->vma
5117 + symsec
->output_offset
5118 + (GET_WORD (input_bfd
, sym
->e_value
)
5121 /* If this is a global symbol set the written flag, and if
5122 it is a local symbol see if we should discard it. */
5126 h
->indx
= obj_aout_external_sym_count (output_bfd
);
5128 else if ((type
& N_TYPE
) != N_SETT
5129 && (type
& N_TYPE
) != N_SETD
5130 && (type
& N_TYPE
) != N_SETB
5131 && (type
& N_TYPE
) != N_SETA
)
5136 case discard_sec_merge
:
5139 if ((type
& N_STAB
) == 0
5140 && bfd_is_local_label_name (input_bfd
, name
))
5154 /* An N_BINCL symbol indicates the start of the stabs
5155 entries for a header file. We need to scan ahead to the
5156 next N_EINCL symbol, ignoring nesting, adding up all the
5157 characters in the symbol names, not including the file
5158 numbers in types (the first number after an open
5160 if (type
== (int) N_BINCL
)
5162 struct external_nlist
*incl_sym
;
5164 struct aout_link_includes_entry
*incl_entry
;
5165 struct aout_link_includes_totals
*t
;
5169 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
5173 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5174 if (incl_type
== (int) N_EINCL
)
5180 else if (incl_type
== (int) N_BINCL
)
5186 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
5187 for (; *s
!= '\0'; s
++)
5192 /* Skip the file number. */
5194 while (ISDIGIT (*s
))
5202 /* If we have already included a header file with the
5203 same value, then replace this one with an N_EXCL
5205 copy
= (bfd_boolean
) (! flaginfo
->info
->keep_memory
);
5206 incl_entry
= aout_link_includes_lookup (&flaginfo
->includes
,
5208 if (incl_entry
== NULL
)
5210 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
5211 if (t
->total
== val
)
5215 /* This is the first time we have seen this header
5216 file with this set of stabs strings. */
5217 t
= (struct aout_link_includes_totals
*)
5218 bfd_hash_allocate (&flaginfo
->includes
.root
,
5223 t
->next
= incl_entry
->totals
;
5224 incl_entry
->totals
= t
;
5230 /* This is a duplicate header file. We must change
5231 it to be an N_EXCL entry, and mark all the
5232 included symbols to prevent outputting them. */
5233 type
= (int) N_EXCL
;
5236 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
5238 incl_sym
++, incl_map
++)
5242 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5243 if (incl_type
== (int) N_EINCL
)
5252 else if (incl_type
== (int) N_BINCL
)
5261 /* Copy this symbol into the list of symbols we are going to
5263 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
5264 H_PUT_8 (output_bfd
, H_GET_8 (input_bfd
, sym
->e_other
), outsym
->e_other
);
5265 H_PUT_16 (output_bfd
, H_GET_16 (input_bfd
, sym
->e_desc
), outsym
->e_desc
);
5267 if (! flaginfo
->info
->keep_memory
)
5269 /* name points into a string table which we are going to
5270 free. If there is a hash table entry, use that string.
5271 Otherwise, copy name into memory. */
5273 name
= h
->root
.root
.string
;
5277 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
5279 if (strtab_index
== (bfd_size_type
) -1)
5281 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
5282 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
5283 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
5284 ++obj_aout_external_sym_count (output_bfd
);
5288 /* Write out the output symbols we have just constructed. */
5289 if (outsym
> flaginfo
->output_syms
)
5291 bfd_size_type outsym_size
;
5293 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0)
5295 outsym_size
= outsym
- flaginfo
->output_syms
;
5296 outsym_size
*= EXTERNAL_NLIST_SIZE
;
5297 if (bfd_bwrite ((void *) flaginfo
->output_syms
, outsym_size
, output_bfd
)
5300 flaginfo
->symoff
+= outsym_size
;
5306 /* Link an a.out input BFD into the output file. */
5309 aout_link_input_bfd (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
5311 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
5313 /* If this is a dynamic object, it may need special handling. */
5314 if ((input_bfd
->flags
& DYNAMIC
) != 0
5315 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
5316 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
5317 (flaginfo
->info
, input_bfd
));
5319 /* Get the symbols. We probably have them already, unless
5320 flaginfo->info->keep_memory is FALSE. */
5321 if (! aout_get_external_symbols (input_bfd
))
5324 /* Write out the symbols and get a map of the new indices. The map
5325 is placed into flaginfo->symbol_map. */
5326 if (! aout_link_write_symbols (flaginfo
, input_bfd
))
5329 /* Relocate and write out the sections. These functions use the
5330 symbol map created by aout_link_write_symbols. The linker_mark
5331 field will be set if these sections are to be included in the
5332 link, which will normally be the case. */
5333 if (obj_textsec (input_bfd
)->linker_mark
)
5335 if (! aout_link_input_section (flaginfo
, input_bfd
,
5336 obj_textsec (input_bfd
),
5338 exec_hdr (input_bfd
)->a_trsize
))
5341 if (obj_datasec (input_bfd
)->linker_mark
)
5343 if (! aout_link_input_section (flaginfo
, input_bfd
,
5344 obj_datasec (input_bfd
),
5346 exec_hdr (input_bfd
)->a_drsize
))
5350 /* If we are not keeping memory, we don't need the symbols any
5351 longer. We still need them if we are keeping memory, because the
5352 strings in the hash table point into them. */
5353 if (! flaginfo
->info
->keep_memory
)
5355 if (! aout_link_free_symbols (input_bfd
))
5362 /* Do the final link step. This is called on the output BFD. The
5363 INFO structure should point to a list of BFDs linked through the
5364 link.next field which can be used to find each BFD which takes part
5365 in the output. Also, each section in ABFD should point to a list
5366 of bfd_link_order structures which list all the input sections for
5367 the output section. */
5370 NAME (aout
, final_link
) (bfd
*abfd
,
5371 struct bfd_link_info
*info
,
5372 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
5374 struct aout_final_link_info aout_info
;
5375 bfd_boolean includes_hash_initialized
= FALSE
;
5377 bfd_size_type trsize
, drsize
;
5378 bfd_size_type max_contents_size
;
5379 bfd_size_type max_relocs_size
;
5380 bfd_size_type max_sym_count
;
5381 struct bfd_link_order
*p
;
5383 bfd_boolean have_link_order_relocs
;
5385 if (bfd_link_pic (info
))
5386 abfd
->flags
|= DYNAMIC
;
5388 aout_info
.info
= info
;
5389 aout_info
.output_bfd
= abfd
;
5390 aout_info
.contents
= NULL
;
5391 aout_info
.relocs
= NULL
;
5392 aout_info
.symbol_map
= NULL
;
5393 aout_info
.output_syms
= NULL
;
5395 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
5396 aout_link_includes_newfunc
,
5397 sizeof (struct aout_link_includes_entry
),
5400 includes_hash_initialized
= TRUE
;
5402 /* Figure out the largest section size. Also, if generating
5403 relocatable output, count the relocs. */
5406 max_contents_size
= 0;
5407 max_relocs_size
= 0;
5409 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5413 if (bfd_link_relocatable (info
))
5415 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5417 trsize
+= exec_hdr (sub
)->a_trsize
;
5418 drsize
+= exec_hdr (sub
)->a_drsize
;
5422 /* FIXME: We need to identify the .text and .data sections
5423 and call get_reloc_upper_bound and canonicalize_reloc to
5424 work out the number of relocs needed, and then multiply
5425 by the reloc size. */
5427 /* xgettext:c-format */
5428 (_("%pB: relocatable link from %s to %s not supported"),
5429 abfd
, sub
->xvec
->name
, abfd
->xvec
->name
);
5430 bfd_set_error (bfd_error_invalid_operation
);
5435 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5437 sz
= obj_textsec (sub
)->size
;
5438 if (sz
> max_contents_size
)
5439 max_contents_size
= sz
;
5440 sz
= obj_datasec (sub
)->size
;
5441 if (sz
> max_contents_size
)
5442 max_contents_size
= sz
;
5444 sz
= exec_hdr (sub
)->a_trsize
;
5445 if (sz
> max_relocs_size
)
5446 max_relocs_size
= sz
;
5447 sz
= exec_hdr (sub
)->a_drsize
;
5448 if (sz
> max_relocs_size
)
5449 max_relocs_size
= sz
;
5451 sz
= obj_aout_external_sym_count (sub
);
5452 if (sz
> max_sym_count
)
5457 if (bfd_link_relocatable (info
))
5459 if (obj_textsec (abfd
) != NULL
)
5460 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
5461 ->map_head
.link_order
)
5462 * obj_reloc_entry_size (abfd
));
5463 if (obj_datasec (abfd
) != NULL
)
5464 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
5465 ->map_head
.link_order
)
5466 * obj_reloc_entry_size (abfd
));
5469 exec_hdr (abfd
)->a_trsize
= trsize
;
5470 exec_hdr (abfd
)->a_drsize
= drsize
;
5472 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
5474 /* Adjust the section sizes and vmas according to the magic number.
5475 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5476 filepos for each section. */
5477 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
5480 /* The relocation and symbol file positions differ among a.out
5481 targets. We are passed a callback routine from the backend
5482 specific code to handle this.
5483 FIXME: At this point we do not know how much space the symbol
5484 table will require. This will not work for any (nonstandard)
5485 a.out target that needs to know the symbol table size before it
5486 can compute the relocation file positions. */
5487 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
5489 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
5490 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
5491 obj_sym_filepos (abfd
) = aout_info
.symoff
;
5493 /* We keep a count of the symbols as we output them. */
5494 obj_aout_external_sym_count (abfd
) = 0;
5496 /* We accumulate the string table as we write out the symbols. */
5497 aout_info
.strtab
= _bfd_stringtab_init ();
5498 if (aout_info
.strtab
== NULL
)
5501 /* Allocate buffers to hold section contents and relocs. */
5502 aout_info
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
5503 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
5504 aout_info
.symbol_map
= (int *) bfd_malloc (max_sym_count
* sizeof (int));
5505 aout_info
.output_syms
= (struct external_nlist
*)
5506 bfd_malloc ((max_sym_count
+ 1) * sizeof (struct external_nlist
));
5507 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
5508 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
5509 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
5510 || aout_info
.output_syms
== NULL
)
5513 /* If we have a symbol named __DYNAMIC, force it out now. This is
5514 required by SunOS. Doing this here rather than in sunos.c is a
5515 hack, but it's easier than exporting everything which would be
5518 struct aout_link_hash_entry
*h
;
5520 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
5521 FALSE
, FALSE
, FALSE
);
5523 aout_link_write_other_symbol (&h
->root
.root
, &aout_info
);
5526 /* The most time efficient way to do the link would be to read all
5527 the input object files into memory and then sort out the
5528 information into the output file. Unfortunately, that will
5529 probably use too much memory. Another method would be to step
5530 through everything that composes the text section and write it
5531 out, and then everything that composes the data section and write
5532 it out, and then write out the relocs, and then write out the
5533 symbols. Unfortunately, that requires reading stuff from each
5534 input file several times, and we will not be able to keep all the
5535 input files open simultaneously, and reopening them will be slow.
5537 What we do is basically process one input file at a time. We do
5538 everything we need to do with an input file once--copy over the
5539 section contents, handle the relocation information, and write
5540 out the symbols--and then we throw away the information we read
5541 from it. This approach requires a lot of lseeks of the output
5542 file, which is unfortunate but still faster than reopening a lot
5545 We use the output_has_begun field of the input BFDs to see
5546 whether we have already handled it. */
5547 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5548 sub
->output_has_begun
= FALSE
;
5550 /* Mark all sections which are to be included in the link. This
5551 will normally be every section. We need to do this so that we
5552 can identify any sections which the linker has decided to not
5554 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5556 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5557 if (p
->type
== bfd_indirect_link_order
)
5558 p
->u
.indirect
.section
->linker_mark
= TRUE
;
5561 have_link_order_relocs
= FALSE
;
5562 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5564 for (p
= o
->map_head
.link_order
;
5568 if (p
->type
== bfd_indirect_link_order
5569 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
5570 == bfd_target_aout_flavour
))
5574 input_bfd
= p
->u
.indirect
.section
->owner
;
5575 if (! input_bfd
->output_has_begun
)
5577 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
5579 input_bfd
->output_has_begun
= TRUE
;
5582 else if (p
->type
== bfd_section_reloc_link_order
5583 || p
->type
== bfd_symbol_reloc_link_order
)
5585 /* These are handled below. */
5586 have_link_order_relocs
= TRUE
;
5590 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
5596 /* Write out any symbols that we have not already written out. */
5597 bfd_hash_traverse (&info
->hash
->table
,
5598 aout_link_write_other_symbol
,
5601 /* Now handle any relocs we were asked to create by the linker.
5602 These did not come from any input file. We must do these after
5603 we have written out all the symbols, so that we know the symbol
5605 if (have_link_order_relocs
)
5607 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5609 for (p
= o
->map_head
.link_order
;
5613 if (p
->type
== bfd_section_reloc_link_order
5614 || p
->type
== bfd_symbol_reloc_link_order
)
5616 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
5623 if (aout_info
.contents
!= NULL
)
5625 free (aout_info
.contents
);
5626 aout_info
.contents
= NULL
;
5628 if (aout_info
.relocs
!= NULL
)
5630 free (aout_info
.relocs
);
5631 aout_info
.relocs
= NULL
;
5633 if (aout_info
.symbol_map
!= NULL
)
5635 free (aout_info
.symbol_map
);
5636 aout_info
.symbol_map
= NULL
;
5638 if (aout_info
.output_syms
!= NULL
)
5640 free (aout_info
.output_syms
);
5641 aout_info
.output_syms
= NULL
;
5643 if (includes_hash_initialized
)
5645 bfd_hash_table_free (&aout_info
.includes
.root
);
5646 includes_hash_initialized
= FALSE
;
5649 /* Finish up any dynamic linking we may be doing. */
5650 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
5652 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
5656 /* Update the header information. */
5657 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
5658 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
5659 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
5660 obj_textsec (abfd
)->reloc_count
=
5661 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
5662 obj_datasec (abfd
)->reloc_count
=
5663 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
5665 /* Write out the string table, unless there are no symbols. */
5666 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0)
5668 if (abfd
->symcount
> 0)
5670 if (!emit_stringtab (abfd
, aout_info
.strtab
))
5675 bfd_byte b
[BYTES_IN_WORD
];
5677 memset (b
, 0, BYTES_IN_WORD
);
5678 if (bfd_bwrite (b
, (bfd_size_type
) BYTES_IN_WORD
, abfd
) != BYTES_IN_WORD
)
5685 if (aout_info
.contents
!= NULL
)
5686 free (aout_info
.contents
);
5687 if (aout_info
.relocs
!= NULL
)
5688 free (aout_info
.relocs
);
5689 if (aout_info
.symbol_map
!= NULL
)
5690 free (aout_info
.symbol_map
);
5691 if (aout_info
.output_syms
!= NULL
)
5692 free (aout_info
.output_syms
);
5693 if (includes_hash_initialized
)
5694 bfd_hash_table_free (&aout_info
.includes
.root
);