1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
29 BFD supports a number of different flavours of a.out format,
30 though the major differences are only the sizes of the
31 structures on disk, and the shape of the relocation
34 The support is split into a basic support file @file{aoutx.h}
35 and other files which derive functions from the base. One
36 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
37 adds to the basic a.out functions support for sun3, sun4, 386
38 and 29k a.out files, to create a target jump vector for a
41 This information is further split out into more specific files
42 for each machine, including @file{sunos.c} for sun3 and sun4,
43 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
44 demonstration of a 64 bit a.out format.
46 The base file @file{aoutx.h} defines general mechanisms for
47 reading and writing records to and from disk and various
48 other methods which BFD requires. It is included by
49 @file{aout32.c} and @file{aout64.c} to form the names
50 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
52 As an example, this is what goes on to make the back end for a
53 sun4, from @file{aout32.c}:
55 | #define ARCH_SIZE 32
61 | aout_32_canonicalize_reloc
62 | aout_32_find_nearest_line
64 | aout_32_get_reloc_upper_bound
69 | #define TARGET_NAME "a.out-sunos-big"
70 | #define VECNAME sunos_big_vec
73 requires all the names from @file{aout32.c}, and produces the jump vector
77 The file @file{host-aout.c} is a special case. It is for a large set
78 of hosts that use ``more or less standard'' a.out files, and
79 for which cross-debugging is not interesting. It uses the
80 standard 32-bit a.out support routines, but determines the
81 file offsets and addresses of the text, data, and BSS
82 sections, the machine architecture and machine type, and the
83 entry point address, in a host-dependent manner. Once these
84 values have been determined, generic code is used to handle
87 When porting it to run on a new system, you must supply:
91 | HOST_MACHINE_ARCH (optional)
92 | HOST_MACHINE_MACHINE (optional)
93 | HOST_TEXT_START_ADDR
96 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
97 values, plus the structures and macros defined in @file{a.out.h} on
98 your host system, will produce a BFD target that will access
99 ordinary a.out files on your host. To configure a new machine
100 to use @file{host-aout.c}, specify:
102 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
103 | TDEPFILES= host-aout.o trad-core.o
105 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
107 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
108 configuration is selected. */
111 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
112 Doesn't matter what the setting of WP_TEXT is on output, but it'll
114 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
115 * Any BFD with both flags clear is OMAGIC.
116 (Just want to make these explicit, so the conditions tested in this
117 file make sense if you're more familiar with a.out than with BFD.) */
119 #define KEEPIT udata.i
123 #include "safe-ctype.h"
128 #include "aout/aout64.h"
129 #include "aout/stab_gnu.h"
137 The file @file{aoutx.h} provides for both the @emph{standard}
138 and @emph{extended} forms of a.out relocation records.
140 The standard records contain only an
141 address, a symbol index, and a type field. The extended records
142 (used on 29ks and sparcs) also have a full integer for an
145 #ifndef CTOR_TABLE_RELOC_HOWTO
146 #define CTOR_TABLE_RELOC_IDX 2
147 #define CTOR_TABLE_RELOC_HOWTO(BFD) \
148 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
149 ? howto_table_ext : howto_table_std) \
150 + CTOR_TABLE_RELOC_IDX)
153 #ifndef MY_swap_std_reloc_in
154 #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
157 #ifndef MY_swap_ext_reloc_in
158 #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
161 #ifndef MY_swap_std_reloc_out
162 #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
165 #ifndef MY_swap_ext_reloc_out
166 #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
169 #ifndef MY_final_link_relocate
170 #define MY_final_link_relocate _bfd_final_link_relocate
173 #ifndef MY_relocate_contents
174 #define MY_relocate_contents _bfd_relocate_contents
177 #define howto_table_ext NAME (aout, ext_howto_table)
178 #define howto_table_std NAME (aout, std_howto_table)
180 reloc_howto_type howto_table_ext
[] =
182 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
183 HOWTO (RELOC_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
, 0, "8", FALSE
, 0, 0x000000ff, FALSE
),
184 HOWTO (RELOC_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
, 0, "16", FALSE
, 0, 0x0000ffff, FALSE
),
185 HOWTO (RELOC_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "32", FALSE
, 0, 0xffffffff, FALSE
),
186 HOWTO (RELOC_DISP8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0, "DISP8", FALSE
, 0, 0x000000ff, FALSE
),
187 HOWTO (RELOC_DISP16
, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0, "DISP16", FALSE
, 0, 0x0000ffff, FALSE
),
188 HOWTO (RELOC_DISP32
, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0, "DISP32", FALSE
, 0, 0xffffffff, FALSE
),
189 HOWTO (RELOC_WDISP30
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "WDISP30", FALSE
, 0, 0x3fffffff, FALSE
),
190 HOWTO (RELOC_WDISP22
, 2, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "WDISP22", FALSE
, 0, 0x003fffff, FALSE
),
191 HOWTO (RELOC_HI22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "HI22", FALSE
, 0, 0x003fffff, FALSE
),
192 HOWTO (RELOC_22
, 0, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "22", FALSE
, 0, 0x003fffff, FALSE
),
193 HOWTO (RELOC_13
, 0, 2, 13, FALSE
, 0, complain_overflow_bitfield
, 0, "13", FALSE
, 0, 0x00001fff, FALSE
),
194 HOWTO (RELOC_LO10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "LO10", FALSE
, 0, 0x000003ff, FALSE
),
195 HOWTO (RELOC_SFA_BASE
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_BASE", FALSE
, 0, 0xffffffff, FALSE
),
196 HOWTO (RELOC_SFA_OFF13
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_OFF13", FALSE
, 0, 0xffffffff, FALSE
),
197 HOWTO (RELOC_BASE10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "BASE10", FALSE
, 0, 0x000003ff, FALSE
),
198 HOWTO (RELOC_BASE13
, 0, 2, 13, FALSE
, 0, complain_overflow_signed
, 0, "BASE13", FALSE
, 0, 0x00001fff, FALSE
),
199 HOWTO (RELOC_BASE22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "BASE22", FALSE
, 0, 0x003fffff, FALSE
),
200 HOWTO (RELOC_PC10
, 0, 2, 10, TRUE
, 0, complain_overflow_dont
, 0, "PC10", FALSE
, 0, 0x000003ff, TRUE
),
201 HOWTO (RELOC_PC22
, 10, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "PC22", FALSE
, 0, 0x003fffff, TRUE
),
202 HOWTO (RELOC_JMP_TBL
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "JMP_TBL", FALSE
, 0, 0x3fffffff, FALSE
),
203 HOWTO (RELOC_SEGOFF16
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "SEGOFF16", FALSE
, 0, 0x00000000, FALSE
),
204 HOWTO (RELOC_GLOB_DAT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "GLOB_DAT", FALSE
, 0, 0x00000000, FALSE
),
205 HOWTO (RELOC_JMP_SLOT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "JMP_SLOT", FALSE
, 0, 0x00000000, FALSE
),
206 HOWTO (RELOC_RELATIVE
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "RELATIVE", FALSE
, 0, 0x00000000, FALSE
),
207 HOWTO (0, 0, 0, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
208 HOWTO (0, 0, 0, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
209 #define RELOC_SPARC_REV32 RELOC_WDISP19
210 HOWTO (RELOC_SPARC_REV32
, 0, 2, 32, FALSE
, 0, complain_overflow_dont
, 0,"R_SPARC_REV32",FALSE
, 0, 0xffffffff, FALSE
),
213 /* Convert standard reloc records to "arelent" format (incl byte swap). */
215 reloc_howto_type howto_table_std
[] =
217 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
218 HOWTO ( 0, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,0,"8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
219 HOWTO ( 1, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
220 HOWTO ( 2, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
221 HOWTO ( 3, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,0,"64", TRUE
, 0xdeaddead,0xdeaddead, FALSE
),
222 HOWTO ( 4, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0,"DISP8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
223 HOWTO ( 5, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0,"DISP16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
224 HOWTO ( 6, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0,"DISP32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
225 HOWTO ( 7, 0, 4, 64, TRUE
, 0, complain_overflow_signed
, 0,"DISP64", TRUE
, 0xfeedface,0xfeedface, FALSE
),
226 HOWTO ( 8, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"GOT_REL", FALSE
, 0,0x00000000, FALSE
),
227 HOWTO ( 9, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"BASE16", FALSE
,0xffffffff,0xffffffff, FALSE
),
228 HOWTO (10, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"BASE32", FALSE
,0xffffffff,0xffffffff, FALSE
),
234 HOWTO (16, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"JMP_TABLE", FALSE
, 0,0x00000000, FALSE
),
250 HOWTO (32, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"RELATIVE", FALSE
, 0,0x00000000, FALSE
),
258 HOWTO (40, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"BASEREL", FALSE
, 0,0x00000000, FALSE
),
261 #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
264 NAME (aout
, reloc_type_lookup
) (bfd
*abfd
, bfd_reloc_code_real_type code
)
266 #define EXT(i, j) case i: return & howto_table_ext [j]
267 #define STD(i, j) case i: return & howto_table_std [j]
268 int ext
= obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
;
270 if (code
== BFD_RELOC_CTOR
)
271 switch (bfd_get_arch_info (abfd
)->bits_per_address
)
284 EXT (BFD_RELOC_8
, 0);
285 EXT (BFD_RELOC_16
, 1);
286 EXT (BFD_RELOC_32
, 2);
287 EXT (BFD_RELOC_HI22
, 8);
288 EXT (BFD_RELOC_LO10
, 11);
289 EXT (BFD_RELOC_32_PCREL_S2
, 6);
290 EXT (BFD_RELOC_SPARC_WDISP22
, 7);
291 EXT (BFD_RELOC_SPARC13
, 10);
292 EXT (BFD_RELOC_SPARC_GOT10
, 14);
293 EXT (BFD_RELOC_SPARC_BASE13
, 15);
294 EXT (BFD_RELOC_SPARC_GOT13
, 15);
295 EXT (BFD_RELOC_SPARC_GOT22
, 16);
296 EXT (BFD_RELOC_SPARC_PC10
, 17);
297 EXT (BFD_RELOC_SPARC_PC22
, 18);
298 EXT (BFD_RELOC_SPARC_WPLT30
, 19);
299 EXT (BFD_RELOC_SPARC_REV32
, 26);
307 STD (BFD_RELOC_8
, 0);
308 STD (BFD_RELOC_16
, 1);
309 STD (BFD_RELOC_32
, 2);
310 STD (BFD_RELOC_8_PCREL
, 4);
311 STD (BFD_RELOC_16_PCREL
, 5);
312 STD (BFD_RELOC_32_PCREL
, 6);
313 STD (BFD_RELOC_16_BASEREL
, 9);
314 STD (BFD_RELOC_32_BASEREL
, 10);
321 NAME (aout
, reloc_name_lookup
) (bfd
*abfd
, const char *r_name
)
323 unsigned int i
, size
;
324 reloc_howto_type
*howto_table
;
326 if (obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
)
328 howto_table
= howto_table_ext
;
329 size
= sizeof (howto_table_ext
) / sizeof (howto_table_ext
[0]);
333 howto_table
= howto_table_std
;
334 size
= sizeof (howto_table_std
) / sizeof (howto_table_std
[0]);
337 for (i
= 0; i
< size
; i
++)
338 if (howto_table
[i
].name
!= NULL
339 && strcasecmp (howto_table
[i
].name
, r_name
) == 0)
340 return &howto_table
[i
];
347 Internal entry points
350 @file{aoutx.h} exports several routines for accessing the
351 contents of an a.out file, which are gathered and exported in
352 turn by various format specific files (eg sunos.c).
357 aout_@var{size}_swap_exec_header_in
360 void aout_@var{size}_swap_exec_header_in,
362 struct external_exec *bytes,
363 struct internal_exec *execp);
366 Swap the information in an executable header @var{raw_bytes} taken
367 from a raw byte stream memory image into the internal exec header
368 structure @var{execp}.
371 #ifndef NAME_swap_exec_header_in
373 NAME (aout
, swap_exec_header_in
) (bfd
*abfd
,
374 struct external_exec
*bytes
,
375 struct internal_exec
*execp
)
377 /* The internal_exec structure has some fields that are unused in this
378 configuration (IE for i960), so ensure that all such uninitialized
379 fields are zero'd out. There are places where two of these structs
380 are memcmp'd, and thus the contents do matter. */
381 memset ((void *) execp
, 0, sizeof (struct internal_exec
));
382 /* Now fill in fields in the execp, from the bytes in the raw data. */
383 execp
->a_info
= H_GET_32 (abfd
, bytes
->e_info
);
384 execp
->a_text
= GET_WORD (abfd
, bytes
->e_text
);
385 execp
->a_data
= GET_WORD (abfd
, bytes
->e_data
);
386 execp
->a_bss
= GET_WORD (abfd
, bytes
->e_bss
);
387 execp
->a_syms
= GET_WORD (abfd
, bytes
->e_syms
);
388 execp
->a_entry
= GET_WORD (abfd
, bytes
->e_entry
);
389 execp
->a_trsize
= GET_WORD (abfd
, bytes
->e_trsize
);
390 execp
->a_drsize
= GET_WORD (abfd
, bytes
->e_drsize
);
392 #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
397 aout_@var{size}_swap_exec_header_out
400 void aout_@var{size}_swap_exec_header_out
402 struct internal_exec *execp,
403 struct external_exec *raw_bytes);
406 Swap the information in an internal exec header structure
407 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
410 NAME (aout
, swap_exec_header_out
) (bfd
*abfd
,
411 struct internal_exec
*execp
,
412 struct external_exec
*bytes
)
414 /* Now fill in fields in the raw data, from the fields in the exec struct. */
415 H_PUT_32 (abfd
, execp
->a_info
, bytes
->e_info
);
416 PUT_WORD (abfd
, execp
->a_text
, bytes
->e_text
);
417 PUT_WORD (abfd
, execp
->a_data
, bytes
->e_data
);
418 PUT_WORD (abfd
, execp
->a_bss
, bytes
->e_bss
);
419 PUT_WORD (abfd
, execp
->a_syms
, bytes
->e_syms
);
420 PUT_WORD (abfd
, execp
->a_entry
, bytes
->e_entry
);
421 PUT_WORD (abfd
, execp
->a_trsize
, bytes
->e_trsize
);
422 PUT_WORD (abfd
, execp
->a_drsize
, bytes
->e_drsize
);
425 /* Make all the section for an a.out file. */
428 NAME (aout
, make_sections
) (bfd
*abfd
)
430 if (obj_textsec (abfd
) == NULL
&& bfd_make_section (abfd
, ".text") == NULL
)
432 if (obj_datasec (abfd
) == NULL
&& bfd_make_section (abfd
, ".data") == NULL
)
434 if (obj_bsssec (abfd
) == NULL
&& bfd_make_section (abfd
, ".bss") == NULL
)
441 aout_@var{size}_some_aout_object_p
444 const bfd_target *aout_@var{size}_some_aout_object_p
446 struct internal_exec *execp,
447 const bfd_target *(*callback_to_real_object_p) (bfd *));
450 Some a.out variant thinks that the file open in @var{abfd}
451 checking is an a.out file. Do some more checking, and set up
452 for access if it really is. Call back to the calling
453 environment's "finish up" function just before returning, to
454 handle any last-minute setup.
458 NAME (aout
, some_aout_object_p
) (bfd
*abfd
,
459 struct internal_exec
*execp
,
460 const bfd_target
*(*callback_to_real_object_p
) (bfd
*))
462 struct aout_data_struct
*rawptr
, *oldrawptr
;
463 const bfd_target
*result
;
464 bfd_size_type amt
= sizeof (* rawptr
);
466 rawptr
= bfd_zalloc (abfd
, amt
);
470 oldrawptr
= abfd
->tdata
.aout_data
;
471 abfd
->tdata
.aout_data
= rawptr
;
473 /* Copy the contents of the old tdata struct.
474 In particular, we want the subformat, since for hpux it was set in
475 hp300hpux.c:swap_exec_header_in and will be used in
476 hp300hpux.c:callback. */
477 if (oldrawptr
!= NULL
)
478 *abfd
->tdata
.aout_data
= *oldrawptr
;
480 abfd
->tdata
.aout_data
->a
.hdr
= &rawptr
->e
;
481 /* Copy in the internal_exec struct. */
482 *(abfd
->tdata
.aout_data
->a
.hdr
) = *execp
;
483 execp
= abfd
->tdata
.aout_data
->a
.hdr
;
485 /* Set the file flags. */
486 abfd
->flags
= BFD_NO_FLAGS
;
487 if (execp
->a_drsize
|| execp
->a_trsize
)
488 abfd
->flags
|= HAS_RELOC
;
489 /* Setting of EXEC_P has been deferred to the bottom of this function. */
491 abfd
->flags
|= HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
;
492 if (N_DYNAMIC (*execp
))
493 abfd
->flags
|= DYNAMIC
;
495 if (N_MAGIC (*execp
) == ZMAGIC
)
497 abfd
->flags
|= D_PAGED
| WP_TEXT
;
498 adata (abfd
).magic
= z_magic
;
500 else if (N_MAGIC (*execp
) == QMAGIC
)
502 abfd
->flags
|= D_PAGED
| WP_TEXT
;
503 adata (abfd
).magic
= z_magic
;
504 adata (abfd
).subformat
= q_magic_format
;
506 else if (N_MAGIC (*execp
) == NMAGIC
)
508 abfd
->flags
|= WP_TEXT
;
509 adata (abfd
).magic
= n_magic
;
511 else if (N_MAGIC (*execp
) == OMAGIC
512 || N_MAGIC (*execp
) == BMAGIC
)
513 adata (abfd
).magic
= o_magic
;
515 /* Should have been checked with N_BADMAG before this routine
519 bfd_get_start_address (abfd
) = execp
->a_entry
;
521 obj_aout_symbols (abfd
) = NULL
;
522 bfd_get_symcount (abfd
) = execp
->a_syms
/ sizeof (struct external_nlist
);
524 /* The default relocation entry size is that of traditional V7 Unix. */
525 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
527 /* The default symbol entry size is that of traditional Unix. */
528 obj_symbol_entry_size (abfd
) = EXTERNAL_NLIST_SIZE
;
531 bfd_init_window (&obj_aout_sym_window (abfd
));
532 bfd_init_window (&obj_aout_string_window (abfd
));
534 obj_aout_external_syms (abfd
) = NULL
;
535 obj_aout_external_strings (abfd
) = NULL
;
536 obj_aout_sym_hashes (abfd
) = NULL
;
538 if (! NAME (aout
, make_sections
) (abfd
))
541 obj_datasec (abfd
)->size
= execp
->a_data
;
542 obj_bsssec (abfd
)->size
= execp
->a_bss
;
544 obj_textsec (abfd
)->flags
=
545 (execp
->a_trsize
!= 0
546 ? (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_RELOC
)
547 : (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
));
548 obj_datasec (abfd
)->flags
=
549 (execp
->a_drsize
!= 0
550 ? (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
| SEC_RELOC
)
551 : (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
));
552 obj_bsssec (abfd
)->flags
= SEC_ALLOC
;
554 #ifdef THIS_IS_ONLY_DOCUMENTATION
555 /* The common code can't fill in these things because they depend
556 on either the start address of the text segment, the rounding
557 up of virtual addresses between segments, or the starting file
558 position of the text segment -- all of which varies among different
559 versions of a.out. */
561 /* Call back to the format-dependent code to fill in the rest of the
562 fields and do any further cleanup. Things that should be filled
563 in by the callback: */
565 struct exec
*execp
= exec_hdr (abfd
);
567 obj_textsec (abfd
)->size
= N_TXTSIZE (*execp
);
568 /* Data and bss are already filled in since they're so standard. */
570 /* The virtual memory addresses of the sections. */
571 obj_textsec (abfd
)->vma
= N_TXTADDR (*execp
);
572 obj_datasec (abfd
)->vma
= N_DATADDR (*execp
);
573 obj_bsssec (abfd
)->vma
= N_BSSADDR (*execp
);
575 /* The file offsets of the sections. */
576 obj_textsec (abfd
)->filepos
= N_TXTOFF (*execp
);
577 obj_datasec (abfd
)->filepos
= N_DATOFF (*execp
);
579 /* The file offsets of the relocation info. */
580 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF (*execp
);
581 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF (*execp
);
583 /* The file offsets of the string table and symbol table. */
584 obj_str_filepos (abfd
) = N_STROFF (*execp
);
585 obj_sym_filepos (abfd
) = N_SYMOFF (*execp
);
587 /* Determine the architecture and machine type of the object file. */
588 switch (N_MACHTYPE (*exec_hdr (abfd
)))
591 abfd
->obj_arch
= bfd_arch_obscure
;
595 adata (abfd
)->page_size
= TARGET_PAGE_SIZE
;
596 adata (abfd
)->segment_size
= SEGMENT_SIZE
;
597 adata (abfd
)->exec_bytes_size
= EXEC_BYTES_SIZE
;
601 /* The architecture is encoded in various ways in various a.out variants,
602 or is not encoded at all in some of them. The relocation size depends
603 on the architecture and the a.out variant. Finally, the return value
604 is the bfd_target vector in use. If an error occurs, return zero and
605 set bfd_error to the appropriate error code.
607 Formats such as b.out, which have additional fields in the a.out
608 header, should cope with them in this callback as well. */
609 #endif /* DOCUMENTATION */
611 result
= (*callback_to_real_object_p
) (abfd
);
613 /* Now that the segment addresses have been worked out, take a better
614 guess at whether the file is executable. If the entry point
615 is within the text segment, assume it is. (This makes files
616 executable even if their entry point address is 0, as long as
617 their text starts at zero.).
619 This test had to be changed to deal with systems where the text segment
620 runs at a different location than the default. The problem is that the
621 entry address can appear to be outside the text segment, thus causing an
622 erroneous conclusion that the file isn't executable.
624 To fix this, we now accept any non-zero entry point as an indication of
625 executability. This will work most of the time, since only the linker
626 sets the entry point, and that is likely to be non-zero for most systems. */
628 if (execp
->a_entry
!= 0
629 || (execp
->a_entry
>= obj_textsec (abfd
)->vma
630 && execp
->a_entry
< (obj_textsec (abfd
)->vma
631 + obj_textsec (abfd
)->size
)))
632 abfd
->flags
|= EXEC_P
;
636 struct stat stat_buf
;
638 /* The original heuristic doesn't work in some important cases.
639 The a.out file has no information about the text start
640 address. For files (like kernels) linked to non-standard
641 addresses (ld -Ttext nnn) the entry point may not be between
642 the default text start (obj_textsec(abfd)->vma) and
643 (obj_textsec(abfd)->vma) + text size. This is not just a mach
644 issue. Many kernels are loaded at non standard addresses. */
645 if (abfd
->iostream
!= NULL
646 && (abfd
->flags
& BFD_IN_MEMORY
) == 0
647 && (fstat (fileno ((FILE *) (abfd
->iostream
)), &stat_buf
) == 0)
648 && ((stat_buf
.st_mode
& 0111) != 0))
649 abfd
->flags
|= EXEC_P
;
651 #endif /* STAT_FOR_EXEC */
657 bfd_release (abfd
, rawptr
);
658 abfd
->tdata
.aout_data
= oldrawptr
;
664 aout_@var{size}_mkobject
667 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
670 Initialize BFD @var{abfd} for use with a.out files.
674 NAME (aout
, mkobject
) (bfd
*abfd
)
676 struct aout_data_struct
*rawptr
;
677 bfd_size_type amt
= sizeof (* rawptr
);
679 bfd_set_error (bfd_error_system_call
);
681 rawptr
= bfd_zalloc (abfd
, amt
);
685 abfd
->tdata
.aout_data
= rawptr
;
686 exec_hdr (abfd
) = &(rawptr
->e
);
688 obj_textsec (abfd
) = NULL
;
689 obj_datasec (abfd
) = NULL
;
690 obj_bsssec (abfd
) = NULL
;
697 aout_@var{size}_machine_type
700 enum machine_type aout_@var{size}_machine_type
701 (enum bfd_architecture arch,
702 unsigned long machine,
703 bfd_boolean *unknown);
706 Keep track of machine architecture and machine type for
707 a.out's. Return the <<machine_type>> for a particular
708 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
709 and machine can't be represented in a.out format.
711 If the architecture is understood, machine type 0 (default)
712 is always understood.
716 NAME (aout
, machine_type
) (enum bfd_architecture arch
,
717 unsigned long machine
,
718 bfd_boolean
*unknown
)
720 enum machine_type arch_flags
;
722 arch_flags
= M_UNKNOWN
;
729 || machine
== bfd_mach_sparc
730 || machine
== bfd_mach_sparc_sparclite
731 || machine
== bfd_mach_sparc_sparclite_le
732 || machine
== bfd_mach_sparc_v8plus
733 || machine
== bfd_mach_sparc_v8plusa
734 || machine
== bfd_mach_sparc_v8plusb
735 || machine
== bfd_mach_sparc_v9
736 || machine
== bfd_mach_sparc_v9a
737 || machine
== bfd_mach_sparc_v9b
)
738 arch_flags
= M_SPARC
;
739 else if (machine
== bfd_mach_sparc_sparclet
)
740 arch_flags
= M_SPARCLET
;
746 case 0: arch_flags
= M_68010
; break;
747 case bfd_mach_m68000
: arch_flags
= M_UNKNOWN
; *unknown
= FALSE
; break;
748 case bfd_mach_m68010
: arch_flags
= M_68010
; break;
749 case bfd_mach_m68020
: arch_flags
= M_68020
; break;
750 default: arch_flags
= M_UNKNOWN
; break;
756 || machine
== bfd_mach_i386_i386
757 || machine
== bfd_mach_i386_i386_intel_syntax
)
770 case bfd_mach_mips3000
:
771 case bfd_mach_mips3900
:
772 arch_flags
= M_MIPS1
;
774 case bfd_mach_mips6000
:
775 arch_flags
= M_MIPS2
;
777 case bfd_mach_mips4000
:
778 case bfd_mach_mips4010
:
779 case bfd_mach_mips4100
:
780 case bfd_mach_mips4300
:
781 case bfd_mach_mips4400
:
782 case bfd_mach_mips4600
:
783 case bfd_mach_mips4650
:
784 case bfd_mach_mips8000
:
785 case bfd_mach_mips9000
:
786 case bfd_mach_mips10000
:
787 case bfd_mach_mips12000
:
788 case bfd_mach_mips16
:
789 case bfd_mach_mipsisa32
:
790 case bfd_mach_mipsisa32r2
:
792 case bfd_mach_mipsisa64
:
793 case bfd_mach_mipsisa64r2
:
794 case bfd_mach_mips_sb1
:
795 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
796 arch_flags
= M_MIPS2
;
799 arch_flags
= M_UNKNOWN
;
807 case 0: arch_flags
= M_NS32532
; break;
808 case 32032: arch_flags
= M_NS32032
; break;
809 case 32532: arch_flags
= M_NS32532
; break;
810 default: arch_flags
= M_UNKNOWN
; break;
819 if (machine
== 0 || machine
== 255)
828 arch_flags
= M_UNKNOWN
;
831 if (arch_flags
!= M_UNKNOWN
)
839 aout_@var{size}_set_arch_mach
842 bfd_boolean aout_@var{size}_set_arch_mach,
844 enum bfd_architecture arch,
845 unsigned long machine);
848 Set the architecture and the machine of the BFD @var{abfd} to the
849 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
850 can support the architecture required.
854 NAME (aout
, set_arch_mach
) (bfd
*abfd
,
855 enum bfd_architecture arch
,
856 unsigned long machine
)
858 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
861 if (arch
!= bfd_arch_unknown
)
865 NAME (aout
, machine_type
) (arch
, machine
, &unknown
);
870 /* Determine the size of a relocation entry. */
875 obj_reloc_entry_size (abfd
) = RELOC_EXT_SIZE
;
878 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
882 return (*aout_backend_info (abfd
)->set_sizes
) (abfd
);
886 adjust_o_magic (bfd
*abfd
, struct internal_exec
*execp
)
888 file_ptr pos
= adata (abfd
).exec_bytes_size
;
893 obj_textsec (abfd
)->filepos
= pos
;
894 if (!obj_textsec (abfd
)->user_set_vma
)
895 obj_textsec (abfd
)->vma
= vma
;
897 vma
= obj_textsec (abfd
)->vma
;
899 pos
+= obj_textsec (abfd
)->size
;
900 vma
+= obj_textsec (abfd
)->size
;
903 if (!obj_datasec (abfd
)->user_set_vma
)
905 obj_textsec (abfd
)->size
+= pad
;
908 obj_datasec (abfd
)->vma
= vma
;
911 vma
= obj_datasec (abfd
)->vma
;
912 obj_datasec (abfd
)->filepos
= pos
;
913 pos
+= obj_datasec (abfd
)->size
;
914 vma
+= obj_datasec (abfd
)->size
;
917 if (!obj_bsssec (abfd
)->user_set_vma
)
919 obj_datasec (abfd
)->size
+= pad
;
922 obj_bsssec (abfd
)->vma
= vma
;
926 /* The VMA of the .bss section is set by the VMA of the
927 .data section plus the size of the .data section. We may
928 need to add padding bytes to make this true. */
929 pad
= obj_bsssec (abfd
)->vma
- vma
;
932 obj_datasec (abfd
)->size
+= pad
;
936 obj_bsssec (abfd
)->filepos
= pos
;
938 /* Fix up the exec header. */
939 execp
->a_text
= obj_textsec (abfd
)->size
;
940 execp
->a_data
= obj_datasec (abfd
)->size
;
941 execp
->a_bss
= obj_bsssec (abfd
)->size
;
942 N_SET_MAGIC (*execp
, OMAGIC
);
946 adjust_z_magic (bfd
*abfd
, struct internal_exec
*execp
)
948 bfd_size_type data_pad
, text_pad
;
950 const struct aout_backend_data
*abdp
;
951 /* TRUE if text includes exec header. */
954 abdp
= aout_backend_info (abfd
);
958 && (abdp
->text_includes_header
959 || obj_aout_subformat (abfd
) == q_magic_format
));
960 obj_textsec (abfd
)->filepos
= (ztih
961 ? adata (abfd
).exec_bytes_size
962 : adata (abfd
).zmagic_disk_block_size
);
963 if (! obj_textsec (abfd
)->user_set_vma
)
965 /* ?? Do we really need to check for relocs here? */
966 obj_textsec (abfd
)->vma
= ((abfd
->flags
& HAS_RELOC
)
969 ? (abdp
->default_text_vma
970 + adata (abfd
).exec_bytes_size
)
971 : abdp
->default_text_vma
));
976 /* The .text section is being loaded at an unusual address. We
977 may need to pad it such that the .data section starts at a page
980 text_pad
= ((obj_textsec (abfd
)->filepos
- obj_textsec (abfd
)->vma
)
981 & (adata (abfd
).page_size
- 1));
983 text_pad
= ((- obj_textsec (abfd
)->vma
)
984 & (adata (abfd
).page_size
- 1));
987 /* Find start of data. */
990 text_end
= obj_textsec (abfd
)->filepos
+ obj_textsec (abfd
)->size
;
991 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
995 /* Note that if page_size == zmagic_disk_block_size, then
996 filepos == page_size, and this case is the same as the ztih
998 text_end
= obj_textsec (abfd
)->size
;
999 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
1000 text_end
+= obj_textsec (abfd
)->filepos
;
1002 obj_textsec (abfd
)->size
+= text_pad
;
1003 text_end
+= text_pad
;
1006 if (!obj_datasec (abfd
)->user_set_vma
)
1009 vma
= obj_textsec (abfd
)->vma
+ obj_textsec (abfd
)->size
;
1010 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1012 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
1014 asection
* text
= obj_textsec (abfd
);
1015 asection
* data
= obj_datasec (abfd
);
1017 text_pad
= data
->vma
- (text
->vma
+ text
->size
);
1018 /* Only pad the text section if the data
1019 section is going to be placed after it. */
1021 text
->size
+= text_pad
;
1023 obj_datasec (abfd
)->filepos
= (obj_textsec (abfd
)->filepos
1024 + obj_textsec (abfd
)->size
);
1026 /* Fix up exec header while we're at it. */
1027 execp
->a_text
= obj_textsec (abfd
)->size
;
1028 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
1029 execp
->a_text
+= adata (abfd
).exec_bytes_size
;
1030 if (obj_aout_subformat (abfd
) == q_magic_format
)
1031 N_SET_MAGIC (*execp
, QMAGIC
);
1033 N_SET_MAGIC (*execp
, ZMAGIC
);
1035 /* Spec says data section should be rounded up to page boundary. */
1036 obj_datasec (abfd
)->size
1037 = align_power (obj_datasec (abfd
)->size
,
1038 obj_bsssec (abfd
)->alignment_power
);
1039 execp
->a_data
= BFD_ALIGN (obj_datasec (abfd
)->size
,
1040 adata (abfd
).page_size
);
1041 data_pad
= execp
->a_data
- obj_datasec (abfd
)->size
;
1044 if (!obj_bsssec (abfd
)->user_set_vma
)
1045 obj_bsssec (abfd
)->vma
= (obj_datasec (abfd
)->vma
1046 + obj_datasec (abfd
)->size
);
1047 /* If the BSS immediately follows the data section and extra space
1048 in the page is left after the data section, fudge data
1049 in the header so that the bss section looks smaller by that
1050 amount. We'll start the bss section there, and lie to the OS.
1051 (Note that a linker script, as well as the above assignment,
1052 could have explicitly set the BSS vma to immediately follow
1053 the data section.) */
1054 if (align_power (obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->alignment_power
)
1055 == obj_datasec (abfd
)->vma
+ obj_datasec (abfd
)->size
)
1056 execp
->a_bss
= (data_pad
> obj_bsssec (abfd
)->size
1057 ? 0 : obj_bsssec (abfd
)->size
- data_pad
);
1059 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1063 adjust_n_magic (bfd
*abfd
, struct internal_exec
*execp
)
1065 file_ptr pos
= adata (abfd
).exec_bytes_size
;
1070 obj_textsec (abfd
)->filepos
= pos
;
1071 if (!obj_textsec (abfd
)->user_set_vma
)
1072 obj_textsec (abfd
)->vma
= vma
;
1074 vma
= obj_textsec (abfd
)->vma
;
1075 pos
+= obj_textsec (abfd
)->size
;
1076 vma
+= obj_textsec (abfd
)->size
;
1079 obj_datasec (abfd
)->filepos
= pos
;
1080 if (!obj_datasec (abfd
)->user_set_vma
)
1081 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1082 vma
= obj_datasec (abfd
)->vma
;
1084 /* Since BSS follows data immediately, see if it needs alignment. */
1085 vma
+= obj_datasec (abfd
)->size
;
1086 pad
= align_power (vma
, obj_bsssec (abfd
)->alignment_power
) - vma
;
1087 obj_datasec (abfd
)->size
+= pad
;
1088 pos
+= obj_datasec (abfd
)->size
;
1091 if (!obj_bsssec (abfd
)->user_set_vma
)
1092 obj_bsssec (abfd
)->vma
= vma
;
1094 vma
= obj_bsssec (abfd
)->vma
;
1096 /* Fix up exec header. */
1097 execp
->a_text
= obj_textsec (abfd
)->size
;
1098 execp
->a_data
= obj_datasec (abfd
)->size
;
1099 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1100 N_SET_MAGIC (*execp
, NMAGIC
);
1104 NAME (aout
, adjust_sizes_and_vmas
) (bfd
*abfd
,
1105 bfd_size_type
*text_size
,
1106 file_ptr
*text_end ATTRIBUTE_UNUSED
)
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 *text_size
= obj_textsec (abfd
)->size
;
1121 /* Rule (heuristic) for when to pad to a new page. Note that there
1122 are (at least) two ways demand-paged (ZMAGIC) files have been
1123 handled. Most Berkeley-based systems start the text segment at
1124 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1125 segment right after the exec header; the latter is counted in the
1126 text segment size, and is paged in by the kernel with the rest of
1129 /* This perhaps isn't the right way to do this, but made it simpler for me
1130 to understand enough to implement it. Better would probably be to go
1131 right from BFD flags to alignment/positioning characteristics. But the
1132 old code was sloppy enough about handling the flags, and had enough
1133 other magic, that it was a little hard for me to understand. I think
1134 I understand it better now, but I haven't time to do the cleanup this
1137 if (abfd
->flags
& D_PAGED
)
1138 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1139 adata (abfd
).magic
= z_magic
;
1140 else if (abfd
->flags
& WP_TEXT
)
1141 adata (abfd
).magic
= n_magic
;
1143 adata (abfd
).magic
= o_magic
;
1145 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1147 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1149 switch (adata (abfd
).magic
)
1151 case n_magic
: str
= "NMAGIC"; break;
1152 case o_magic
: str
= "OMAGIC"; break;
1153 case z_magic
: str
= "ZMAGIC"; break;
1158 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1159 obj_textsec (abfd
)->alignment_power
,
1160 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1161 obj_datasec (abfd
)->alignment_power
,
1162 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
,
1163 obj_bsssec (abfd
)->alignment_power
);
1167 switch (adata (abfd
).magic
)
1170 adjust_o_magic (abfd
, execp
);
1173 adjust_z_magic (abfd
, execp
);
1176 adjust_n_magic (abfd
, execp
);
1182 #ifdef BFD_AOUT_DEBUG
1183 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1184 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1185 obj_textsec (abfd
)->filepos
,
1186 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1187 obj_datasec (abfd
)->filepos
,
1188 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
);
1196 aout_@var{size}_new_section_hook
1199 bfd_boolean aout_@var{size}_new_section_hook,
1204 Called by the BFD in response to a @code{bfd_make_section}
1208 NAME (aout
, new_section_hook
) (bfd
*abfd
, asection
*newsect
)
1210 /* Align to double at least. */
1211 newsect
->alignment_power
= bfd_get_arch_info (abfd
)->section_align_power
;
1213 if (bfd_get_format (abfd
) == bfd_object
)
1215 if (obj_textsec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".text"))
1217 obj_textsec (abfd
)= newsect
;
1218 newsect
->target_index
= N_TEXT
;
1220 else if (obj_datasec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".data"))
1222 obj_datasec (abfd
) = newsect
;
1223 newsect
->target_index
= N_DATA
;
1225 else if (obj_bsssec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".bss"))
1227 obj_bsssec (abfd
) = newsect
;
1228 newsect
->target_index
= N_BSS
;
1232 /* We allow more than three sections internally. */
1233 return _bfd_generic_new_section_hook (abfd
, newsect
);
1237 NAME (aout
, set_section_contents
) (bfd
*abfd
,
1239 const void * location
,
1241 bfd_size_type count
)
1244 bfd_size_type text_size
;
1246 if (! abfd
->output_has_begun
)
1248 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
1252 if (section
== obj_bsssec (abfd
))
1254 bfd_set_error (bfd_error_no_contents
);
1258 if (section
!= obj_textsec (abfd
)
1259 && section
!= obj_datasec (abfd
))
1261 if (aout_section_merge_with_text_p (abfd
, section
))
1262 section
->filepos
= obj_textsec (abfd
)->filepos
+
1263 (section
->vma
- obj_textsec (abfd
)->vma
);
1266 (*_bfd_error_handler
)
1267 (_("%s: can not represent section `%s' in a.out object file format"),
1268 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, section
));
1269 bfd_set_error (bfd_error_nonrepresentable_section
);
1276 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1277 || bfd_bwrite (location
, count
, abfd
) != count
)
1284 /* Read the external symbols from an a.out file. */
1287 aout_get_external_symbols (bfd
*abfd
)
1289 if (obj_aout_external_syms (abfd
) == NULL
)
1291 bfd_size_type count
;
1292 struct external_nlist
*syms
;
1295 count
= exec_hdr (abfd
)->a_syms
/ EXTERNAL_NLIST_SIZE
;
1298 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
),
1299 exec_hdr (abfd
)->a_syms
,
1300 &obj_aout_sym_window (abfd
), TRUE
))
1302 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1304 /* We allocate using malloc to make the values easy to free
1305 later on. If we put them on the objalloc it might not be
1306 possible to free them. */
1307 syms
= bfd_malloc (count
* EXTERNAL_NLIST_SIZE
);
1308 if (syms
== NULL
&& count
!= 0)
1311 amt
= exec_hdr (abfd
)->a_syms
;
1312 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1313 || bfd_bread (syms
, amt
, abfd
) != amt
)
1320 obj_aout_external_syms (abfd
) = syms
;
1321 obj_aout_external_sym_count (abfd
) = count
;
1324 if (obj_aout_external_strings (abfd
) == NULL
1325 && exec_hdr (abfd
)->a_syms
!= 0)
1327 unsigned char string_chars
[BYTES_IN_WORD
];
1328 bfd_size_type stringsize
;
1330 bfd_size_type amt
= BYTES_IN_WORD
;
1332 /* Get the size of the strings. */
1333 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1334 || bfd_bread ((void *) string_chars
, amt
, abfd
) != amt
)
1336 stringsize
= GET_WORD (abfd
, string_chars
);
1339 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
,
1340 &obj_aout_string_window (abfd
), TRUE
))
1342 strings
= (char *) obj_aout_string_window (abfd
).data
;
1344 strings
= bfd_malloc (stringsize
+ 1);
1345 if (strings
== NULL
)
1348 /* Skip space for the string count in the buffer for convenience
1349 when using indexes. */
1350 amt
= stringsize
- BYTES_IN_WORD
;
1351 if (bfd_bread (strings
+ BYTES_IN_WORD
, amt
, abfd
) != amt
)
1358 /* Ensure that a zero index yields an empty string. */
1361 strings
[stringsize
- 1] = 0;
1363 obj_aout_external_strings (abfd
) = strings
;
1364 obj_aout_external_string_size (abfd
) = stringsize
;
1370 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1371 and symbol->value fields of CACHE_PTR will be set from the a.out
1372 nlist structure. This function is responsible for setting
1373 symbol->flags and symbol->section, and adjusting symbol->value. */
1376 translate_from_native_sym_flags (bfd
*abfd
, aout_symbol_type
*cache_ptr
)
1380 if ((cache_ptr
->type
& N_STAB
) != 0
1381 || cache_ptr
->type
== N_FN
)
1385 /* This is a debugging symbol. */
1386 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1388 /* Work out the symbol section. */
1389 switch (cache_ptr
->type
& N_TYPE
)
1393 sec
= obj_textsec (abfd
);
1396 sec
= obj_datasec (abfd
);
1399 sec
= obj_bsssec (abfd
);
1403 sec
= bfd_abs_section_ptr
;
1407 cache_ptr
->symbol
.section
= sec
;
1408 cache_ptr
->symbol
.value
-= sec
->vma
;
1413 /* Get the default visibility. This does not apply to all types, so
1414 we just hold it in a local variable to use if wanted. */
1415 if ((cache_ptr
->type
& N_EXT
) == 0)
1416 visible
= BSF_LOCAL
;
1418 visible
= BSF_GLOBAL
;
1420 switch (cache_ptr
->type
)
1423 case N_ABS
: case N_ABS
| N_EXT
:
1424 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1425 cache_ptr
->symbol
.flags
= visible
;
1428 case N_UNDF
| N_EXT
:
1429 if (cache_ptr
->symbol
.value
!= 0)
1431 /* This is a common symbol. */
1432 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1433 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1437 cache_ptr
->symbol
.flags
= 0;
1438 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1442 case N_TEXT
: case N_TEXT
| N_EXT
:
1443 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1444 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1445 cache_ptr
->symbol
.flags
= visible
;
1448 /* N_SETV symbols used to represent set vectors placed in the
1449 data section. They are no longer generated. Theoretically,
1450 it was possible to extract the entries and combine them with
1451 new ones, although I don't know if that was ever actually
1452 done. Unless that feature is restored, treat them as data
1454 case N_SETV
: case N_SETV
| N_EXT
:
1455 case N_DATA
: case N_DATA
| N_EXT
:
1456 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1457 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1458 cache_ptr
->symbol
.flags
= visible
;
1461 case N_BSS
: case N_BSS
| N_EXT
:
1462 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1463 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1464 cache_ptr
->symbol
.flags
= visible
;
1467 case N_SETA
: case N_SETA
| N_EXT
:
1468 case N_SETT
: case N_SETT
| N_EXT
:
1469 case N_SETD
: case N_SETD
| N_EXT
:
1470 case N_SETB
: case N_SETB
| N_EXT
:
1472 /* This code is no longer needed. It used to be used to make
1473 the linker handle set symbols, but they are now handled in
1474 the add_symbols routine instead. */
1475 switch (cache_ptr
->type
& N_TYPE
)
1478 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1481 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1484 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1487 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1491 cache_ptr
->symbol
.flags
|= BSF_CONSTRUCTOR
;
1496 /* This symbol is the text of a warning message. The next
1497 symbol is the symbol to associate the warning with. If a
1498 reference is made to that symbol, a warning is issued. */
1499 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_WARNING
;
1500 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1503 case N_INDR
: case N_INDR
| N_EXT
:
1504 /* An indirect symbol. This consists of two symbols in a row.
1505 The first symbol is the name of the indirection. The second
1506 symbol is the name of the target. A reference to the first
1507 symbol becomes a reference to the second. */
1508 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_INDIRECT
| visible
;
1509 cache_ptr
->symbol
.section
= bfd_ind_section_ptr
;
1513 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1514 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1518 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1519 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1523 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1524 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1525 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1529 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1530 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1531 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1535 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1536 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1537 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1544 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1547 translate_to_native_sym_flags (bfd
*abfd
,
1549 struct external_nlist
*sym_pointer
)
1551 bfd_vma value
= cache_ptr
->value
;
1555 /* Mask out any existing type bits in case copying from one section
1557 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1559 sec
= bfd_get_section (cache_ptr
);
1564 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1566 (*_bfd_error_handler
)
1567 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
1568 bfd_get_filename (abfd
),
1569 cache_ptr
->name
!= NULL
? cache_ptr
->name
: _("*unknown*"));
1570 bfd_set_error (bfd_error_nonrepresentable_section
);
1574 if (sec
->output_section
!= NULL
)
1576 off
= sec
->output_offset
;
1577 sec
= sec
->output_section
;
1580 if (bfd_is_abs_section (sec
))
1581 sym_pointer
->e_type
[0] |= N_ABS
;
1582 else if (sec
== obj_textsec (abfd
))
1583 sym_pointer
->e_type
[0] |= N_TEXT
;
1584 else if (sec
== obj_datasec (abfd
))
1585 sym_pointer
->e_type
[0] |= N_DATA
;
1586 else if (sec
== obj_bsssec (abfd
))
1587 sym_pointer
->e_type
[0] |= N_BSS
;
1588 else if (bfd_is_und_section (sec
))
1589 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1590 else if (bfd_is_ind_section (sec
))
1591 sym_pointer
->e_type
[0] = N_INDR
;
1592 else if (bfd_is_com_section (sec
))
1593 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1596 if (aout_section_merge_with_text_p (abfd
, sec
))
1597 sym_pointer
->e_type
[0] |= N_TEXT
;
1600 (*_bfd_error_handler
)
1601 (_("%s: can not represent section `%s' in a.out object file format"),
1602 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, sec
));
1603 bfd_set_error (bfd_error_nonrepresentable_section
);
1608 /* Turn the symbol from section relative to absolute again. */
1609 value
+= sec
->vma
+ off
;
1611 if ((cache_ptr
->flags
& BSF_WARNING
) != 0)
1612 sym_pointer
->e_type
[0] = N_WARNING
;
1614 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1615 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1616 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1617 sym_pointer
->e_type
[0] |= N_EXT
;
1618 else if ((cache_ptr
->flags
& BSF_LOCAL
) != 0)
1619 sym_pointer
->e_type
[0] &= ~N_EXT
;
1621 if ((cache_ptr
->flags
& BSF_CONSTRUCTOR
) != 0)
1623 int type
= ((aout_symbol_type
*) cache_ptr
)->type
;
1627 case N_ABS
: type
= N_SETA
; break;
1628 case N_TEXT
: type
= N_SETT
; break;
1629 case N_DATA
: type
= N_SETD
; break;
1630 case N_BSS
: type
= N_SETB
; break;
1632 sym_pointer
->e_type
[0] = type
;
1635 if ((cache_ptr
->flags
& BSF_WEAK
) != 0)
1639 switch (sym_pointer
->e_type
[0] & N_TYPE
)
1642 case N_ABS
: type
= N_WEAKA
; break;
1643 case N_TEXT
: type
= N_WEAKT
; break;
1644 case N_DATA
: type
= N_WEAKD
; break;
1645 case N_BSS
: type
= N_WEAKB
; break;
1646 case N_UNDF
: type
= N_WEAKU
; break;
1648 sym_pointer
->e_type
[0] = type
;
1651 PUT_WORD (abfd
, value
, sym_pointer
->e_value
);
1656 /* Native-level interface to symbols. */
1659 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1661 bfd_size_type amt
= sizeof (aout_symbol_type
);
1663 aout_symbol_type
*new = bfd_zalloc (abfd
, amt
);
1666 new->symbol
.the_bfd
= abfd
;
1668 return &new->symbol
;
1671 /* Translate a set of internal symbols into external symbols. */
1674 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1675 aout_symbol_type
*in
,
1676 struct external_nlist
*ext
,
1677 bfd_size_type count
,
1679 bfd_size_type strsize
,
1680 bfd_boolean dynamic
)
1682 struct external_nlist
*ext_end
;
1684 ext_end
= ext
+ count
;
1685 for (; ext
< ext_end
; ext
++, in
++)
1689 x
= GET_WORD (abfd
, ext
->e_strx
);
1690 in
->symbol
.the_bfd
= abfd
;
1692 /* For the normal symbols, the zero index points at the number
1693 of bytes in the string table but is to be interpreted as the
1694 null string. For the dynamic symbols, the number of bytes in
1695 the string table is stored in the __DYNAMIC structure and the
1696 zero index points at an actual string. */
1697 if (x
== 0 && ! dynamic
)
1698 in
->symbol
.name
= "";
1699 else if (x
< strsize
)
1700 in
->symbol
.name
= str
+ x
;
1704 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1705 in
->desc
= H_GET_16 (abfd
, ext
->e_desc
);
1706 in
->other
= H_GET_8 (abfd
, ext
->e_other
);
1707 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1708 in
->symbol
.udata
.p
= NULL
;
1710 if (! translate_from_native_sym_flags (abfd
, in
))
1714 in
->symbol
.flags
|= BSF_DYNAMIC
;
1720 /* We read the symbols into a buffer, which is discarded when this
1721 function exits. We read the strings into a buffer large enough to
1722 hold them all plus all the cached symbol entries. */
1725 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1727 struct external_nlist
*old_external_syms
;
1728 aout_symbol_type
*cached
;
1729 bfd_size_type cached_size
;
1731 /* If there's no work to be done, don't do any. */
1732 if (obj_aout_symbols (abfd
) != NULL
)
1735 old_external_syms
= obj_aout_external_syms (abfd
);
1737 if (! aout_get_external_symbols (abfd
))
1740 cached_size
= obj_aout_external_sym_count (abfd
);
1741 cached_size
*= sizeof (aout_symbol_type
);
1742 cached
= bfd_zmalloc (cached_size
);
1743 if (cached
== NULL
&& cached_size
!= 0)
1746 /* Convert from external symbol information to internal. */
1747 if (! (NAME (aout
, translate_symbol_table
)
1749 obj_aout_external_syms (abfd
),
1750 obj_aout_external_sym_count (abfd
),
1751 obj_aout_external_strings (abfd
),
1752 obj_aout_external_string_size (abfd
),
1759 bfd_get_symcount (abfd
) = obj_aout_external_sym_count (abfd
);
1761 obj_aout_symbols (abfd
) = cached
;
1763 /* It is very likely that anybody who calls this function will not
1764 want the external symbol information, so if it was allocated
1765 because of our call to aout_get_external_symbols, we free it up
1766 right away to save space. */
1767 if (old_external_syms
== NULL
1768 && obj_aout_external_syms (abfd
) != NULL
)
1771 bfd_free_window (&obj_aout_sym_window (abfd
));
1773 free (obj_aout_external_syms (abfd
));
1775 obj_aout_external_syms (abfd
) = NULL
;
1781 /* We use a hash table when writing out symbols so that we only write
1782 out a particular string once. This helps particularly when the
1783 linker writes out stabs debugging entries, because each different
1784 contributing object file tends to have many duplicate stabs
1787 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1788 if BFD_TRADITIONAL_FORMAT is set. */
1790 /* Get the index of a string in a strtab, adding it if it is not
1793 static inline bfd_size_type
1794 add_to_stringtab (bfd
*abfd
,
1795 struct bfd_strtab_hash
*tab
,
1800 bfd_size_type index
;
1802 /* An index of 0 always means the empty string. */
1803 if (str
== 0 || *str
== '\0')
1806 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1807 doesn't understand a hashed string table. */
1809 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1812 index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1814 if (index
!= (bfd_size_type
) -1)
1815 /* Add BYTES_IN_WORD to the return value to account for the
1816 space taken up by the string table size. */
1817 index
+= BYTES_IN_WORD
;
1822 /* Write out a strtab. ABFD is already at the right location in the
1826 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1828 bfd_byte buffer
[BYTES_IN_WORD
];
1829 bfd_size_type amt
= BYTES_IN_WORD
;
1831 /* The string table starts with the size. */
1832 PUT_WORD (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_WORD
, buffer
);
1833 if (bfd_bwrite ((void *) buffer
, amt
, abfd
) != amt
)
1836 return _bfd_stringtab_emit (abfd
, tab
);
1840 NAME (aout
, write_syms
) (bfd
*abfd
)
1842 unsigned int count
;
1843 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1844 struct bfd_strtab_hash
*strtab
;
1846 strtab
= _bfd_stringtab_init ();
1850 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1852 asymbol
*g
= generic
[count
];
1854 struct external_nlist nsp
;
1857 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1858 if (indx
== (bfd_size_type
) -1)
1860 PUT_WORD (abfd
, indx
, (bfd_byte
*) nsp
.e_strx
);
1862 if (bfd_asymbol_flavour (g
) == abfd
->xvec
->flavour
)
1864 H_PUT_16 (abfd
, aout_symbol (g
)->desc
, nsp
.e_desc
);
1865 H_PUT_8 (abfd
, aout_symbol (g
)->other
, nsp
.e_other
);
1866 H_PUT_8 (abfd
, aout_symbol (g
)->type
, nsp
.e_type
);
1870 H_PUT_16 (abfd
, 0, nsp
.e_desc
);
1871 H_PUT_8 (abfd
, 0, nsp
.e_other
);
1872 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1875 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1878 amt
= EXTERNAL_NLIST_SIZE
;
1879 if (bfd_bwrite ((void *) &nsp
, amt
, abfd
) != amt
)
1882 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1883 here, at the end. */
1887 if (! emit_stringtab (abfd
, strtab
))
1890 _bfd_stringtab_free (strtab
);
1895 _bfd_stringtab_free (strtab
);
1900 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1902 unsigned int counter
= 0;
1903 aout_symbol_type
*symbase
;
1905 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1908 for (symbase
= obj_aout_symbols (abfd
);
1909 counter
++ < bfd_get_symcount (abfd
);
1911 *(location
++) = (asymbol
*) (symbase
++);
1913 return bfd_get_symcount (abfd
);
1916 /* Standard reloc stuff. */
1917 /* Output standard relocation information to a file in target byte order. */
1919 extern void NAME (aout
, swap_std_reloc_out
)
1920 (bfd
*, arelent
*, struct reloc_std_external
*);
1923 NAME (aout
, swap_std_reloc_out
) (bfd
*abfd
,
1925 struct reloc_std_external
*natptr
)
1928 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1930 unsigned int r_length
;
1932 int r_baserel
, r_jmptable
, r_relative
;
1933 asection
*output_section
= sym
->section
->output_section
;
1935 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
1937 r_length
= g
->howto
->size
; /* Size as a power of two. */
1938 r_pcrel
= (int) g
->howto
->pc_relative
; /* Relative to PC? */
1939 /* XXX This relies on relocs coming from a.out files. */
1940 r_baserel
= (g
->howto
->type
& 8) != 0;
1941 r_jmptable
= (g
->howto
->type
& 16) != 0;
1942 r_relative
= (g
->howto
->type
& 32) != 0;
1944 /* Name was clobbered by aout_write_syms to be symbol index. */
1946 /* If this relocation is relative to a symbol then set the
1947 r_index to the symbols index, and the r_extern bit.
1949 Absolute symbols can come in in two ways, either as an offset
1950 from the abs section, or as a symbol which has an abs value.
1951 check for that here. */
1953 if (bfd_is_com_section (output_section
)
1954 || bfd_is_abs_section (output_section
)
1955 || bfd_is_und_section (output_section
)
1956 /* PR gas/3041 a.out relocs against weak symbols
1957 must be treated as if they were against externs. */
1958 || (sym
->flags
& BSF_WEAK
))
1960 if (bfd_abs_section_ptr
->symbol
== sym
)
1962 /* Whoops, looked like an abs symbol, but is
1963 really an offset from the abs section. */
1969 /* Fill in symbol. */
1971 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
1976 /* Just an ordinary section. */
1978 r_index
= output_section
->target_index
;
1981 /* Now the fun stuff. */
1982 if (bfd_header_big_endian (abfd
))
1984 natptr
->r_index
[0] = r_index
>> 16;
1985 natptr
->r_index
[1] = r_index
>> 8;
1986 natptr
->r_index
[2] = r_index
;
1987 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
1988 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
1989 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
1990 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
1991 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
1992 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
1996 natptr
->r_index
[2] = r_index
>> 16;
1997 natptr
->r_index
[1] = r_index
>> 8;
1998 natptr
->r_index
[0] = r_index
;
1999 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
2000 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
2001 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
2002 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
2003 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
2004 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
2008 /* Extended stuff. */
2009 /* Output extended relocation information to a file in target byte order. */
2011 extern void NAME (aout
, swap_ext_reloc_out
)
2012 (bfd
*, arelent
*, struct reloc_ext_external
*);
2015 NAME (aout
, swap_ext_reloc_out
) (bfd
*abfd
,
2017 struct reloc_ext_external
*natptr
)
2021 unsigned int r_type
;
2023 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2024 asection
*output_section
= sym
->section
->output_section
;
2026 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
2028 r_type
= (unsigned int) g
->howto
->type
;
2030 r_addend
= g
->addend
;
2031 if ((sym
->flags
& BSF_SECTION_SYM
) != 0)
2032 r_addend
+= (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2034 /* If this relocation is relative to a symbol then set the
2035 r_index to the symbols index, and the r_extern bit.
2037 Absolute symbols can come in in two ways, either as an offset
2038 from the abs section, or as a symbol which has an abs value.
2039 check for that here. */
2040 if (bfd_is_abs_section (bfd_get_section (sym
)))
2045 else if ((sym
->flags
& BSF_SECTION_SYM
) == 0)
2047 if (bfd_is_und_section (bfd_get_section (sym
))
2048 || (sym
->flags
& BSF_GLOBAL
) != 0)
2052 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2056 /* Just an ordinary section. */
2058 r_index
= output_section
->target_index
;
2061 /* Now the fun stuff. */
2062 if (bfd_header_big_endian (abfd
))
2064 natptr
->r_index
[0] = r_index
>> 16;
2065 natptr
->r_index
[1] = r_index
>> 8;
2066 natptr
->r_index
[2] = r_index
;
2067 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
2068 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
2072 natptr
->r_index
[2] = r_index
>> 16;
2073 natptr
->r_index
[1] = r_index
>> 8;
2074 natptr
->r_index
[0] = r_index
;
2075 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
2076 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
));
2079 PUT_WORD (abfd
, r_addend
, natptr
->r_addend
);
2082 /* BFD deals internally with all things based from the section they're
2083 in. so, something in 10 bytes into a text section with a base of
2084 50 would have a symbol (.text+10) and know .text vma was 50.
2086 Aout keeps all it's symbols based from zero, so the symbol would
2087 contain 60. This macro subs the base of each section from the value
2088 to give the true offset from the section. */
2090 #define MOVE_ADDRESS(ad) \
2093 /* Undefined symbol. */ \
2094 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2095 cache_ptr->addend = ad; \
2099 /* Defined, section relative. Replace symbol with pointer to \
2100 symbol which points to section. */ \
2104 case N_TEXT | N_EXT: \
2105 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2106 cache_ptr->addend = ad - su->textsec->vma; \
2109 case N_DATA | N_EXT: \
2110 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2111 cache_ptr->addend = ad - su->datasec->vma; \
2114 case N_BSS | N_EXT: \
2115 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2116 cache_ptr->addend = ad - su->bsssec->vma; \
2120 case N_ABS | N_EXT: \
2121 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2122 cache_ptr->addend = ad; \
2128 NAME (aout
, swap_ext_reloc_in
) (bfd
*abfd
,
2129 struct reloc_ext_external
*bytes
,
2132 bfd_size_type symcount
)
2134 unsigned int r_index
;
2136 unsigned int r_type
;
2137 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2139 cache_ptr
->address
= (GET_SWORD (abfd
, bytes
->r_address
));
2141 /* Now the fun stuff. */
2142 if (bfd_header_big_endian (abfd
))
2144 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2145 | ((unsigned int) bytes
->r_index
[1] << 8)
2146 | bytes
->r_index
[2]);
2147 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
2148 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
2149 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
2153 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2154 | ((unsigned int) bytes
->r_index
[1] << 8)
2155 | bytes
->r_index
[0]);
2156 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
2157 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
2158 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
2161 cache_ptr
->howto
= howto_table_ext
+ r_type
;
2163 /* Base relative relocs are always against the symbol table,
2164 regardless of the setting of r_extern. r_extern just reflects
2165 whether the symbol the reloc is against is local or global. */
2166 if (r_type
== (unsigned int) RELOC_BASE10
2167 || r_type
== (unsigned int) RELOC_BASE13
2168 || r_type
== (unsigned int) RELOC_BASE22
)
2171 if (r_extern
&& r_index
> symcount
)
2173 /* We could arrange to return an error, but it might be useful
2174 to see the file even if it is bad. */
2179 MOVE_ADDRESS (GET_SWORD (abfd
, bytes
->r_addend
));
2183 NAME (aout
, swap_std_reloc_in
) (bfd
*abfd
,
2184 struct reloc_std_external
*bytes
,
2187 bfd_size_type symcount
)
2189 unsigned int r_index
;
2191 unsigned int r_length
;
2193 int r_baserel
, r_jmptable
, r_relative
;
2194 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2195 unsigned int howto_idx
;
2197 cache_ptr
->address
= H_GET_32 (abfd
, bytes
->r_address
);
2199 /* Now the fun stuff. */
2200 if (bfd_header_big_endian (abfd
))
2202 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2203 | ((unsigned int) bytes
->r_index
[1] << 8)
2204 | bytes
->r_index
[2]);
2205 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
2206 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
2207 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
2208 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
2209 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
2210 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
2211 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
2215 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2216 | ((unsigned int) bytes
->r_index
[1] << 8)
2217 | bytes
->r_index
[0]);
2218 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
2219 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
2220 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_LITTLE
));
2221 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_LITTLE
));
2222 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_LITTLE
));
2223 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
2224 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
2227 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
2228 + 16 * r_jmptable
+ 32 * r_relative
);
2229 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_std
));
2230 cache_ptr
->howto
= howto_table_std
+ howto_idx
;
2231 BFD_ASSERT (cache_ptr
->howto
->type
!= (unsigned int) -1);
2233 /* Base relative relocs are always against the symbol table,
2234 regardless of the setting of r_extern. r_extern just reflects
2235 whether the symbol the reloc is against is local or global. */
2239 if (r_extern
&& r_index
> symcount
)
2241 /* We could arrange to return an error, but it might be useful
2242 to see the file even if it is bad. */
2250 /* Read and swap the relocs for a section. */
2253 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
2255 bfd_size_type count
;
2256 bfd_size_type reloc_size
;
2258 arelent
*reloc_cache
;
2260 unsigned int counter
= 0;
2264 if (asect
->relocation
)
2267 if (asect
->flags
& SEC_CONSTRUCTOR
)
2270 if (asect
== obj_datasec (abfd
))
2271 reloc_size
= exec_hdr (abfd
)->a_drsize
;
2272 else if (asect
== obj_textsec (abfd
))
2273 reloc_size
= exec_hdr (abfd
)->a_trsize
;
2274 else if (asect
== obj_bsssec (abfd
))
2278 bfd_set_error (bfd_error_invalid_operation
);
2282 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
2285 each_size
= obj_reloc_entry_size (abfd
);
2287 count
= reloc_size
/ each_size
;
2289 amt
= count
* sizeof (arelent
);
2290 reloc_cache
= bfd_zmalloc (amt
);
2291 if (reloc_cache
== NULL
&& count
!= 0)
2294 relocs
= bfd_malloc (reloc_size
);
2295 if (relocs
== NULL
&& reloc_size
!= 0)
2301 if (bfd_bread (relocs
, reloc_size
, abfd
) != reloc_size
)
2308 cache_ptr
= reloc_cache
;
2309 if (each_size
== RELOC_EXT_SIZE
)
2311 struct reloc_ext_external
*rptr
= (struct reloc_ext_external
*) relocs
;
2313 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2314 MY_swap_ext_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2315 (bfd_size_type
) bfd_get_symcount (abfd
));
2319 struct reloc_std_external
*rptr
= (struct reloc_std_external
*) relocs
;
2321 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2322 MY_swap_std_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2323 (bfd_size_type
) bfd_get_symcount (abfd
));
2328 asect
->relocation
= reloc_cache
;
2329 asect
->reloc_count
= cache_ptr
- reloc_cache
;
2334 /* Write out a relocation section into an object file. */
2337 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
2340 unsigned char *native
, *natptr
;
2343 unsigned int count
= section
->reloc_count
;
2344 bfd_size_type natsize
;
2346 if (count
== 0 || section
->orelocation
== NULL
)
2349 each_size
= obj_reloc_entry_size (abfd
);
2350 natsize
= (bfd_size_type
) each_size
* count
;
2351 native
= bfd_zalloc (abfd
, natsize
);
2355 generic
= section
->orelocation
;
2357 if (each_size
== RELOC_EXT_SIZE
)
2359 for (natptr
= native
;
2361 --count
, natptr
+= each_size
, ++generic
)
2362 MY_swap_ext_reloc_out (abfd
, *generic
,
2363 (struct reloc_ext_external
*) natptr
);
2367 for (natptr
= native
;
2369 --count
, natptr
+= each_size
, ++generic
)
2370 MY_swap_std_reloc_out (abfd
, *generic
,
2371 (struct reloc_std_external
*) natptr
);
2374 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
2376 bfd_release (abfd
, native
);
2379 bfd_release (abfd
, native
);
2384 /* This is stupid. This function should be a boolean predicate. */
2387 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
2392 arelent
*tblptr
= section
->relocation
;
2395 if (section
== obj_bsssec (abfd
))
2401 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
) (abfd
, section
, symbols
)))
2404 if (section
->flags
& SEC_CONSTRUCTOR
)
2406 arelent_chain
*chain
= section
->constructor_chain
;
2407 for (count
= 0; count
< section
->reloc_count
; count
++)
2409 *relptr
++ = &chain
->relent
;
2410 chain
= chain
->next
;
2415 tblptr
= section
->relocation
;
2417 for (count
= 0; count
++ < section
->reloc_count
; )
2419 *relptr
++ = tblptr
++;
2424 return section
->reloc_count
;
2428 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
2430 if (bfd_get_format (abfd
) != bfd_object
)
2432 bfd_set_error (bfd_error_invalid_operation
);
2436 if (asect
->flags
& SEC_CONSTRUCTOR
)
2437 return sizeof (arelent
*) * (asect
->reloc_count
+ 1);
2439 if (asect
== obj_datasec (abfd
))
2440 return sizeof (arelent
*)
2441 * ((exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
))
2444 if (asect
== obj_textsec (abfd
))
2445 return sizeof (arelent
*)
2446 * ((exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
))
2449 if (asect
== obj_bsssec (abfd
))
2450 return sizeof (arelent
*);
2452 if (asect
== obj_bsssec (abfd
))
2455 bfd_set_error (bfd_error_invalid_operation
);
2460 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2462 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2465 return (bfd_get_symcount (abfd
)+1) * (sizeof (aout_symbol_type
*));
2469 NAME (aout
, get_lineno
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2470 asymbol
*ignore_symbol ATTRIBUTE_UNUSED
)
2476 NAME (aout
, get_symbol_info
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2480 bfd_symbol_info (symbol
, ret
);
2482 if (ret
->type
== '?')
2484 int type_code
= aout_symbol (symbol
)->type
& 0xff;
2485 const char *stab_name
= bfd_get_stab_name (type_code
);
2486 static char buf
[10];
2488 if (stab_name
== NULL
)
2490 sprintf (buf
, "(%d)", type_code
);
2494 ret
->stab_type
= type_code
;
2495 ret
->stab_other
= (unsigned) (aout_symbol (symbol
)->other
& 0xff);
2496 ret
->stab_desc
= (unsigned) (aout_symbol (symbol
)->desc
& 0xffff);
2497 ret
->stab_name
= stab_name
;
2502 NAME (aout
, print_symbol
) (bfd
*abfd
,
2505 bfd_print_symbol_type how
)
2507 FILE *file
= (FILE *)afile
;
2511 case bfd_print_symbol_name
:
2513 fprintf (file
,"%s", symbol
->name
);
2515 case bfd_print_symbol_more
:
2516 fprintf (file
,"%4x %2x %2x",
2517 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2518 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2519 (unsigned) (aout_symbol (symbol
)->type
));
2521 case bfd_print_symbol_all
:
2523 const char *section_name
= symbol
->section
->name
;
2525 bfd_print_symbol_vandf (abfd
, (void *)file
, symbol
);
2527 fprintf (file
," %-5s %04x %02x %02x",
2529 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2530 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2531 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2533 fprintf (file
," %s", symbol
->name
);
2539 /* If we don't have to allocate more than 1MB to hold the generic
2540 symbols, we use the generic minisymbol methord: it's faster, since
2541 it only translates the symbols once, not multiple times. */
2542 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2544 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2545 symbols. The minisymbol_to_symbol function translates these into
2546 BFD asymbol structures. */
2549 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2550 bfd_boolean dynamic
,
2552 unsigned int *sizep
)
2555 /* We could handle the dynamic symbols here as well, but it's
2556 easier to hand them off. */
2557 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2559 if (! aout_get_external_symbols (abfd
))
2562 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2563 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2565 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2567 /* By passing the external symbols back from this routine, we are
2568 giving up control over the memory block. Clear
2569 obj_aout_external_syms, so that we do not try to free it
2571 obj_aout_external_syms (abfd
) = NULL
;
2573 *sizep
= EXTERNAL_NLIST_SIZE
;
2574 return obj_aout_external_sym_count (abfd
);
2577 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2578 unmodified a.out symbol. The SYM argument is a structure returned
2579 by bfd_make_empty_symbol, which we fill in here. */
2582 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2583 bfd_boolean dynamic
,
2584 const void * minisym
,
2588 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2589 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2591 memset (sym
, 0, sizeof (aout_symbol_type
));
2593 /* We call translate_symbol_table to translate a single symbol. */
2594 if (! (NAME (aout
, translate_symbol_table
)
2596 (aout_symbol_type
*) sym
,
2597 (struct external_nlist
*) minisym
,
2599 obj_aout_external_strings (abfd
),
2600 obj_aout_external_string_size (abfd
),
2607 /* Provided a BFD, a section and an offset into the section, calculate
2608 and return the name of the source file and the line nearest to the
2612 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2616 const char **filename_ptr
,
2617 const char **functionname_ptr
,
2618 unsigned int *line_ptr
)
2620 /* Run down the file looking for the filename, function and linenumber. */
2622 const char *directory_name
= NULL
;
2623 const char *main_file_name
= NULL
;
2624 const char *current_file_name
= NULL
;
2625 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2626 const char *line_directory_name
= NULL
; /* Value of directory_name at line number. */
2627 bfd_vma low_line_vma
= 0;
2628 bfd_vma low_func_vma
= 0;
2630 bfd_size_type filelen
, funclen
;
2633 *filename_ptr
= abfd
->filename
;
2634 *functionname_ptr
= 0;
2637 if (symbols
!= NULL
)
2639 for (p
= symbols
; *p
; p
++)
2641 aout_symbol_type
*q
= (aout_symbol_type
*) (*p
);
2646 /* If this looks like a file name symbol, and it comes after
2647 the line number we have found so far, but before the
2648 offset, then we have probably not found the right line
2650 if (q
->symbol
.value
<= offset
2651 && ((q
->symbol
.value
> low_line_vma
2652 && (line_file_name
!= NULL
2654 || (q
->symbol
.value
> low_func_vma
2657 const char *symname
;
2659 symname
= q
->symbol
.name
;
2660 if (strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2662 if (q
->symbol
.value
> low_line_vma
)
2665 line_file_name
= NULL
;
2667 if (q
->symbol
.value
> low_func_vma
)
2674 /* If this symbol is less than the offset, but greater than
2675 the line number we have found so far, then we have not
2676 found the right line number. */
2677 if (q
->symbol
.value
<= offset
)
2679 if (q
->symbol
.value
> low_line_vma
)
2682 line_file_name
= NULL
;
2684 if (q
->symbol
.value
> low_func_vma
)
2688 main_file_name
= current_file_name
= q
->symbol
.name
;
2689 /* Look ahead to next symbol to check if that too is an N_SO. */
2693 q
= (aout_symbol_type
*) (*p
);
2694 if (q
->type
!= (int)N_SO
)
2697 /* Found a second N_SO First is directory; second is filename. */
2698 directory_name
= current_file_name
;
2699 main_file_name
= current_file_name
= q
->symbol
.name
;
2700 if (obj_textsec (abfd
) != section
)
2704 current_file_name
= q
->symbol
.name
;
2711 /* We'll keep this if it resolves nearer than the one we have
2713 if (q
->symbol
.value
>= low_line_vma
2714 && q
->symbol
.value
<= offset
)
2716 *line_ptr
= q
->desc
;
2717 low_line_vma
= q
->symbol
.value
;
2718 line_file_name
= current_file_name
;
2719 line_directory_name
= directory_name
;
2724 /* We'll keep this if it is nearer than the one we have already. */
2725 if (q
->symbol
.value
>= low_func_vma
&&
2726 q
->symbol
.value
<= offset
)
2728 low_func_vma
= q
->symbol
.value
;
2729 func
= (asymbol
*)q
;
2731 else if (q
->symbol
.value
> offset
)
2742 main_file_name
= line_file_name
;
2743 directory_name
= line_directory_name
;
2746 if (main_file_name
== NULL
2747 || IS_ABSOLUTE_PATH (main_file_name
)
2748 || directory_name
== NULL
)
2751 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2756 funclen
= strlen (bfd_asymbol_name (func
));
2758 if (adata (abfd
).line_buf
!= NULL
)
2759 free (adata (abfd
).line_buf
);
2761 if (filelen
+ funclen
== 0)
2762 adata (abfd
).line_buf
= buf
= NULL
;
2765 buf
= bfd_malloc (filelen
+ funclen
+ 3);
2766 adata (abfd
).line_buf
= buf
;
2771 if (main_file_name
!= NULL
)
2773 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2774 *filename_ptr
= main_file_name
;
2777 sprintf (buf
, "%s%s", directory_name
, main_file_name
);
2778 *filename_ptr
= buf
;
2785 const char *function
= func
->name
;
2788 /* The caller expects a symbol name. We actually have a
2789 function name, without the leading underscore. Put the
2790 underscore back in, so that the caller gets a symbol name. */
2791 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2792 strcpy (buf
, function
);
2795 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2796 strcpy (buf
+ 1, function
);
2798 /* Have to remove : stuff. */
2799 colon
= strchr (buf
, ':');
2802 *functionname_ptr
= buf
;
2809 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2810 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2812 return adata (abfd
).exec_bytes_size
;
2815 /* Free all information we have cached for this BFD. We can always
2816 read it again later if we need it. */
2819 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2823 if (bfd_get_format (abfd
) != bfd_object
2824 || abfd
->tdata
.aout_data
== NULL
)
2827 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2828 BFCI_FREE (obj_aout_symbols (abfd
));
2830 obj_aout_external_syms (abfd
) = 0;
2831 bfd_free_window (&obj_aout_sym_window (abfd
));
2832 bfd_free_window (&obj_aout_string_window (abfd
));
2833 obj_aout_external_strings (abfd
) = 0;
2835 BFCI_FREE (obj_aout_external_syms (abfd
));
2836 BFCI_FREE (obj_aout_external_strings (abfd
));
2838 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2839 BFCI_FREE (o
->relocation
);
2845 /* a.out link code. */
2847 /* Routine to create an entry in an a.out link hash table. */
2849 struct bfd_hash_entry
*
2850 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2851 struct bfd_hash_table
*table
,
2854 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2856 /* Allocate the structure if it has not already been allocated by a
2859 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
2863 /* Call the allocation method of the superclass. */
2864 ret
= ((struct aout_link_hash_entry
*)
2865 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2869 /* Set local fields. */
2870 ret
->written
= FALSE
;
2874 return (struct bfd_hash_entry
*) ret
;
2877 /* Initialize an a.out link hash table. */
2880 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2882 struct bfd_hash_entry
*(*newfunc
)
2883 (struct bfd_hash_entry
*, struct bfd_hash_table
*,
2885 unsigned int entsize
)
2887 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2890 /* Create an a.out link hash table. */
2892 struct bfd_link_hash_table
*
2893 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2895 struct aout_link_hash_table
*ret
;
2896 bfd_size_type amt
= sizeof (* ret
);
2898 ret
= bfd_malloc (amt
);
2902 if (!NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2903 NAME (aout
, link_hash_newfunc
),
2904 sizeof (struct aout_link_hash_entry
)))
2912 /* Add all symbols from an object file to the hash table. */
2915 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2917 bfd_boolean (*add_one_symbol
)
2918 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
2919 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
2920 struct bfd_link_hash_entry
**);
2921 struct external_nlist
*syms
;
2922 bfd_size_type sym_count
;
2925 struct aout_link_hash_entry
**sym_hash
;
2926 struct external_nlist
*p
;
2927 struct external_nlist
*pend
;
2930 syms
= obj_aout_external_syms (abfd
);
2931 sym_count
= obj_aout_external_sym_count (abfd
);
2932 strings
= obj_aout_external_strings (abfd
);
2933 if (info
->keep_memory
)
2938 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
2940 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
2941 (abfd
, info
, &syms
, &sym_count
, &strings
)))
2945 /* We keep a list of the linker hash table entries that correspond
2946 to particular symbols. We could just look them up in the hash
2947 table, but keeping the list is more efficient. Perhaps this
2948 should be conditional on info->keep_memory. */
2949 amt
= sym_count
* sizeof (struct aout_link_hash_entry
*);
2950 sym_hash
= bfd_alloc (abfd
, amt
);
2951 if (sym_hash
== NULL
&& sym_count
!= 0)
2953 obj_aout_sym_hashes (abfd
) = sym_hash
;
2955 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
2956 if (add_one_symbol
== NULL
)
2957 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
2960 pend
= p
+ sym_count
;
2961 for (; p
< pend
; p
++, sym_hash
++)
2972 type
= H_GET_8 (abfd
, p
->e_type
);
2974 /* Ignore debugging symbols. */
2975 if ((type
& N_STAB
) != 0)
2978 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
2979 value
= GET_WORD (abfd
, p
->e_value
);
2996 /* Ignore symbols that are not externally visible. */
2999 /* Ignore local indirect symbol. */
3004 case N_UNDF
| N_EXT
:
3007 section
= bfd_und_section_ptr
;
3011 section
= bfd_com_section_ptr
;
3014 section
= bfd_abs_section_ptr
;
3016 case N_TEXT
| N_EXT
:
3017 section
= obj_textsec (abfd
);
3018 value
-= bfd_get_section_vma (abfd
, section
);
3020 case N_DATA
| N_EXT
:
3021 case N_SETV
| N_EXT
:
3022 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3023 translate_from_native_sym_flags. */
3024 section
= obj_datasec (abfd
);
3025 value
-= bfd_get_section_vma (abfd
, section
);
3028 section
= obj_bsssec (abfd
);
3029 value
-= bfd_get_section_vma (abfd
, section
);
3031 case N_INDR
| N_EXT
:
3032 /* An indirect symbol. The next symbol is the symbol
3033 which this one really is. */
3034 BFD_ASSERT (p
+ 1 < pend
);
3036 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3037 section
= bfd_ind_section_ptr
;
3038 flags
|= BSF_INDIRECT
;
3040 case N_COMM
| N_EXT
:
3041 section
= bfd_com_section_ptr
;
3043 case N_SETA
: case N_SETA
| N_EXT
:
3044 section
= bfd_abs_section_ptr
;
3045 flags
|= BSF_CONSTRUCTOR
;
3047 case N_SETT
: case N_SETT
| N_EXT
:
3048 section
= obj_textsec (abfd
);
3049 flags
|= BSF_CONSTRUCTOR
;
3050 value
-= bfd_get_section_vma (abfd
, section
);
3052 case N_SETD
: case N_SETD
| N_EXT
:
3053 section
= obj_datasec (abfd
);
3054 flags
|= BSF_CONSTRUCTOR
;
3055 value
-= bfd_get_section_vma (abfd
, section
);
3057 case N_SETB
: case N_SETB
| N_EXT
:
3058 section
= obj_bsssec (abfd
);
3059 flags
|= BSF_CONSTRUCTOR
;
3060 value
-= bfd_get_section_vma (abfd
, section
);
3063 /* A warning symbol. The next symbol is the one to warn
3064 about. If there is no next symbol, just look away. */
3069 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3070 section
= bfd_und_section_ptr
;
3071 flags
|= BSF_WARNING
;
3074 section
= bfd_und_section_ptr
;
3078 section
= bfd_abs_section_ptr
;
3082 section
= obj_textsec (abfd
);
3083 value
-= bfd_get_section_vma (abfd
, section
);
3087 section
= obj_datasec (abfd
);
3088 value
-= bfd_get_section_vma (abfd
, section
);
3092 section
= obj_bsssec (abfd
);
3093 value
-= bfd_get_section_vma (abfd
, section
);
3098 if (! ((*add_one_symbol
)
3099 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
3100 (struct bfd_link_hash_entry
**) sym_hash
)))
3103 /* Restrict the maximum alignment of a common symbol based on
3104 the architecture, since a.out has no way to represent
3105 alignment requirements of a section in a .o file. FIXME:
3106 This isn't quite right: it should use the architecture of the
3107 output file, not the input files. */
3108 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3109 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3110 bfd_get_arch_info (abfd
)->section_align_power
))
3111 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3112 bfd_get_arch_info (abfd
)->section_align_power
;
3114 /* If this is a set symbol, and we are not building sets, then
3115 it is possible for the hash entry to not have been set. In
3116 such a case, treat the symbol as not globally defined. */
3117 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3119 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3123 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3130 /* Free up the internal symbols read from an a.out file. */
3133 aout_link_free_symbols (bfd
*abfd
)
3135 if (obj_aout_external_syms (abfd
) != NULL
)
3138 bfd_free_window (&obj_aout_sym_window (abfd
));
3140 free ((void *) obj_aout_external_syms (abfd
));
3142 obj_aout_external_syms (abfd
) = NULL
;
3144 if (obj_aout_external_strings (abfd
) != NULL
)
3147 bfd_free_window (&obj_aout_string_window (abfd
));
3149 free ((void *) obj_aout_external_strings (abfd
));
3151 obj_aout_external_strings (abfd
) = NULL
;
3156 /* Add symbols from an a.out object file. */
3159 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3161 if (! aout_get_external_symbols (abfd
))
3163 if (! aout_link_add_symbols (abfd
, info
))
3165 if (! info
->keep_memory
)
3167 if (! aout_link_free_symbols (abfd
))
3173 /* Look through the internal symbols to see if this object file should
3174 be included in the link. We should include this object file if it
3175 defines any symbols which are currently undefined. If this object
3176 file defines a common symbol, then we may adjust the size of the
3177 known symbol but we do not include the object file in the link
3178 (unless there is some other reason to include it). */
3181 aout_link_check_ar_symbols (bfd
*abfd
,
3182 struct bfd_link_info
*info
,
3183 bfd_boolean
*pneeded
)
3185 struct external_nlist
*p
;
3186 struct external_nlist
*pend
;
3191 /* Look through all the symbols. */
3192 p
= obj_aout_external_syms (abfd
);
3193 pend
= p
+ obj_aout_external_sym_count (abfd
);
3194 strings
= obj_aout_external_strings (abfd
);
3195 for (; p
< pend
; p
++)
3197 int type
= H_GET_8 (abfd
, p
->e_type
);
3199 struct bfd_link_hash_entry
*h
;
3201 /* Ignore symbols that are not externally visible. This is an
3202 optimization only, as we check the type more thoroughly
3204 if (((type
& N_EXT
) == 0
3205 || (type
& N_STAB
) != 0
3212 if (type
== N_WARNING
3218 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3219 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
3221 /* We are only interested in symbols that are currently
3222 undefined or common. */
3224 || (h
->type
!= bfd_link_hash_undefined
3225 && h
->type
!= bfd_link_hash_common
))
3227 if (type
== (N_INDR
| N_EXT
))
3232 if (type
== (N_TEXT
| N_EXT
)
3233 || type
== (N_DATA
| N_EXT
)
3234 || type
== (N_BSS
| N_EXT
)
3235 || type
== (N_ABS
| N_EXT
)
3236 || type
== (N_INDR
| N_EXT
))
3238 /* This object file defines this symbol. We must link it
3239 in. This is true regardless of whether the current
3240 definition of the symbol is undefined or common.
3242 If the current definition is common, we have a case in
3243 which we have already seen an object file including:
3245 and this object file from the archive includes:
3247 In such a case, whether to include this object is target
3248 dependant for backward compatibility.
3250 FIXME: The SunOS 4.1.3 linker will pull in the archive
3251 element if the symbol is defined in the .data section,
3252 but not if it is defined in the .text section. That
3253 seems a bit crazy to me, and it has not been implemented
3254 yet. However, it might be correct. */
3255 if (h
->type
== bfd_link_hash_common
)
3259 switch (info
->common_skip_ar_aymbols
)
3261 case bfd_link_common_skip_text
:
3262 skip
= (type
== (N_TEXT
| N_EXT
));
3264 case bfd_link_common_skip_data
:
3265 skip
= (type
== (N_DATA
| N_EXT
));
3268 case bfd_link_common_skip_all
:
3277 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
3283 if (type
== (N_UNDF
| N_EXT
))
3287 value
= GET_WORD (abfd
, p
->e_value
);
3290 /* This symbol is common in the object from the archive
3292 if (h
->type
== bfd_link_hash_undefined
)
3297 symbfd
= h
->u
.undef
.abfd
;
3300 /* This symbol was created as undefined from
3301 outside BFD. We assume that we should link
3302 in the object file. This is done for the -u
3303 option in the linker. */
3304 if (! (*info
->callbacks
->add_archive_element
) (info
,
3311 /* Turn the current link symbol into a common
3312 symbol. It is already on the undefs list. */
3313 h
->type
= bfd_link_hash_common
;
3314 h
->u
.c
.p
= bfd_hash_allocate (&info
->hash
->table
,
3315 sizeof (struct bfd_link_hash_common_entry
));
3316 if (h
->u
.c
.p
== NULL
)
3319 h
->u
.c
.size
= value
;
3321 /* FIXME: This isn't quite right. The maximum
3322 alignment of a common symbol should be set by the
3323 architecture of the output file, not of the input
3325 power
= bfd_log2 (value
);
3326 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3327 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3328 h
->u
.c
.p
->alignment_power
= power
;
3330 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3335 /* Adjust the size of the common symbol if
3337 if (value
> h
->u
.c
.size
)
3338 h
->u
.c
.size
= value
;
3348 /* This symbol is weak but defined. We must pull it in if
3349 the current link symbol is undefined, but we don't want
3350 it if the current link symbol is common. */
3351 if (h
->type
== bfd_link_hash_undefined
)
3353 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
3361 /* We do not need this object file. */
3364 /* Check a single archive element to see if we need to include it in
3365 the link. *PNEEDED is set according to whether this element is
3366 needed in the link or not. This is called from
3367 _bfd_generic_link_add_archive_symbols. */
3370 aout_link_check_archive_element (bfd
*abfd
,
3371 struct bfd_link_info
*info
,
3372 bfd_boolean
*pneeded
)
3374 if (! aout_get_external_symbols (abfd
))
3377 if (! aout_link_check_ar_symbols (abfd
, info
, pneeded
))
3382 if (! aout_link_add_symbols (abfd
, info
))
3386 if (! info
->keep_memory
|| ! *pneeded
)
3388 if (! aout_link_free_symbols (abfd
))
3395 /* Given an a.out BFD, add symbols to the global hash table as
3399 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
3401 switch (bfd_get_format (abfd
))
3404 return aout_link_add_object_symbols (abfd
, info
);
3406 return _bfd_generic_link_add_archive_symbols
3407 (abfd
, info
, aout_link_check_archive_element
);
3409 bfd_set_error (bfd_error_wrong_format
);
3414 /* A hash table used for header files with N_BINCL entries. */
3416 struct aout_link_includes_table
3418 struct bfd_hash_table root
;
3421 /* A linked list of totals that we have found for a particular header
3424 struct aout_link_includes_totals
3426 struct aout_link_includes_totals
*next
;
3430 /* An entry in the header file hash table. */
3432 struct aout_link_includes_entry
3434 struct bfd_hash_entry root
;
3435 /* List of totals we have found for this file. */
3436 struct aout_link_includes_totals
*totals
;
3439 /* Look up an entry in an the header file hash table. */
3441 #define aout_link_includes_lookup(table, string, create, copy) \
3442 ((struct aout_link_includes_entry *) \
3443 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3445 /* During the final link step we need to pass around a bunch of
3446 information, so we do it in an instance of this structure. */
3448 struct aout_final_link_info
3450 /* General link information. */
3451 struct bfd_link_info
*info
;
3454 /* Reloc file positions. */
3455 file_ptr treloff
, dreloff
;
3456 /* File position of symbols. */
3459 struct bfd_strtab_hash
*strtab
;
3460 /* Header file hash table. */
3461 struct aout_link_includes_table includes
;
3462 /* A buffer large enough to hold the contents of any section. */
3464 /* A buffer large enough to hold the relocs of any section. */
3466 /* A buffer large enough to hold the symbol map of any input BFD. */
3468 /* A buffer large enough to hold output symbols of any input BFD. */
3469 struct external_nlist
*output_syms
;
3472 /* The function to create a new entry in the header file hash table. */
3474 static struct bfd_hash_entry
*
3475 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
3476 struct bfd_hash_table
*table
,
3479 struct aout_link_includes_entry
*ret
=
3480 (struct aout_link_includes_entry
*) entry
;
3482 /* Allocate the structure if it has not already been allocated by a
3485 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
3489 /* Call the allocation method of the superclass. */
3490 ret
= ((struct aout_link_includes_entry
*)
3491 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3494 /* Set local fields. */
3498 return (struct bfd_hash_entry
*) ret
;
3501 /* Write out a symbol that was not associated with an a.out input
3505 aout_link_write_other_symbol (struct aout_link_hash_entry
*h
, void * data
)
3507 struct aout_final_link_info
*finfo
= (struct aout_final_link_info
*) data
;
3511 struct external_nlist outsym
;
3515 if (h
->root
.type
== bfd_link_hash_warning
)
3517 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
3518 if (h
->root
.type
== bfd_link_hash_new
)
3522 output_bfd
= finfo
->output_bfd
;
3524 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
3526 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
3527 (output_bfd
, finfo
->info
, h
)))
3529 /* FIXME: No way to handle errors. */
3539 /* An indx of -2 means the symbol must be written. */
3541 && (finfo
->info
->strip
== strip_all
3542 || (finfo
->info
->strip
== strip_some
3543 && bfd_hash_lookup (finfo
->info
->keep_hash
, h
->root
.root
.string
,
3544 FALSE
, FALSE
) == NULL
)))
3547 switch (h
->root
.type
)
3550 case bfd_link_hash_warning
:
3552 /* Avoid variable not initialized warnings. */
3554 case bfd_link_hash_new
:
3555 /* This can happen for set symbols when sets are not being
3558 case bfd_link_hash_undefined
:
3559 type
= N_UNDF
| N_EXT
;
3562 case bfd_link_hash_defined
:
3563 case bfd_link_hash_defweak
:
3567 sec
= h
->root
.u
.def
.section
->output_section
;
3568 BFD_ASSERT (bfd_is_abs_section (sec
)
3569 || sec
->owner
== output_bfd
);
3570 if (sec
== obj_textsec (output_bfd
))
3571 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
3572 else if (sec
== obj_datasec (output_bfd
))
3573 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
3574 else if (sec
== obj_bsssec (output_bfd
))
3575 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
3577 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
3579 val
= (h
->root
.u
.def
.value
3581 + h
->root
.u
.def
.section
->output_offset
);
3584 case bfd_link_hash_common
:
3585 type
= N_UNDF
| N_EXT
;
3586 val
= h
->root
.u
.c
.size
;
3588 case bfd_link_hash_undefweak
:
3591 case bfd_link_hash_indirect
:
3592 /* We ignore these symbols, since the indirected symbol is
3593 already in the hash table. */
3597 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
3598 H_PUT_8 (output_bfd
, 0, outsym
.e_other
);
3599 H_PUT_16 (output_bfd
, 0, outsym
.e_desc
);
3600 indx
= add_to_stringtab (output_bfd
, finfo
->strtab
, h
->root
.root
.string
,
3602 if (indx
== - (bfd_size_type
) 1)
3603 /* FIXME: No way to handle errors. */
3606 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3607 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3609 amt
= EXTERNAL_NLIST_SIZE
;
3610 if (bfd_seek (output_bfd
, finfo
->symoff
, SEEK_SET
) != 0
3611 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3612 /* FIXME: No way to handle errors. */
3615 finfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
3616 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3617 ++obj_aout_external_sym_count (output_bfd
);
3622 /* Handle a link order which is supposed to generate a reloc. */
3625 aout_link_reloc_link_order (struct aout_final_link_info
*finfo
,
3627 struct bfd_link_order
*p
)
3629 struct bfd_link_order_reloc
*pr
;
3632 reloc_howto_type
*howto
;
3633 file_ptr
*reloff_ptr
= NULL
;
3634 struct reloc_std_external srel
;
3635 struct reloc_ext_external erel
;
3641 if (p
->type
== bfd_section_reloc_link_order
)
3644 if (bfd_is_abs_section (pr
->u
.section
))
3645 r_index
= N_ABS
| N_EXT
;
3648 BFD_ASSERT (pr
->u
.section
->owner
== finfo
->output_bfd
);
3649 r_index
= pr
->u
.section
->target_index
;
3654 struct aout_link_hash_entry
*h
;
3656 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3658 h
= ((struct aout_link_hash_entry
*)
3659 bfd_wrapped_link_hash_lookup (finfo
->output_bfd
, finfo
->info
,
3660 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3666 /* We decided to strip this symbol, but it turns out that we
3667 can't. Note that we lose the other and desc information
3668 here. I don't think that will ever matter for a global
3672 if (! aout_link_write_other_symbol (h
, (void *) finfo
))
3678 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
3679 (finfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0)))
3685 howto
= bfd_reloc_type_lookup (finfo
->output_bfd
, pr
->reloc
);
3688 bfd_set_error (bfd_error_bad_value
);
3692 if (o
== obj_textsec (finfo
->output_bfd
))
3693 reloff_ptr
= &finfo
->treloff
;
3694 else if (o
== obj_datasec (finfo
->output_bfd
))
3695 reloff_ptr
= &finfo
->dreloff
;
3699 if (obj_reloc_entry_size (finfo
->output_bfd
) == RELOC_STD_SIZE
)
3702 MY_put_reloc (finfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3712 r_pcrel
= (int) howto
->pc_relative
;
3713 r_baserel
= (howto
->type
& 8) != 0;
3714 r_jmptable
= (howto
->type
& 16) != 0;
3715 r_relative
= (howto
->type
& 32) != 0;
3716 r_length
= howto
->size
;
3718 PUT_WORD (finfo
->output_bfd
, p
->offset
, srel
.r_address
);
3719 if (bfd_header_big_endian (finfo
->output_bfd
))
3721 srel
.r_index
[0] = r_index
>> 16;
3722 srel
.r_index
[1] = r_index
>> 8;
3723 srel
.r_index
[2] = r_index
;
3725 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3726 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3727 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3728 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3729 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3730 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3734 srel
.r_index
[2] = r_index
>> 16;
3735 srel
.r_index
[1] = r_index
>> 8;
3736 srel
.r_index
[0] = r_index
;
3738 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3739 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3740 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3741 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3742 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3743 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3747 rel_ptr
= (void *) &srel
;
3749 /* We have to write the addend into the object file, since
3750 standard a.out relocs are in place. It would be more
3751 reliable if we had the current contents of the file here,
3752 rather than assuming zeroes, but we can't read the file since
3753 it was opened using bfd_openw. */
3754 if (pr
->addend
!= 0)
3757 bfd_reloc_status_type r
;
3761 size
= bfd_get_reloc_size (howto
);
3762 buf
= bfd_zmalloc (size
);
3765 r
= MY_relocate_contents (howto
, finfo
->output_bfd
,
3766 (bfd_vma
) pr
->addend
, buf
);
3772 case bfd_reloc_outofrange
:
3774 case bfd_reloc_overflow
:
3775 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
3777 (p
->type
== bfd_section_reloc_link_order
3778 ? bfd_section_name (finfo
->output_bfd
,
3781 howto
->name
, pr
->addend
, NULL
, NULL
, (bfd_vma
) 0)))
3788 ok
= bfd_set_section_contents (finfo
->output_bfd
, o
, (void *) buf
,
3789 (file_ptr
) p
->offset
, size
);
3797 #ifdef MY_put_ext_reloc
3798 MY_put_ext_reloc (finfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
3799 howto
, &erel
, pr
->addend
);
3801 PUT_WORD (finfo
->output_bfd
, p
->offset
, erel
.r_address
);
3803 if (bfd_header_big_endian (finfo
->output_bfd
))
3805 erel
.r_index
[0] = r_index
>> 16;
3806 erel
.r_index
[1] = r_index
>> 8;
3807 erel
.r_index
[2] = r_index
;
3809 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
3810 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
3814 erel
.r_index
[2] = r_index
>> 16;
3815 erel
.r_index
[1] = r_index
>> 8;
3816 erel
.r_index
[0] = r_index
;
3818 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
3819 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
3822 PUT_WORD (finfo
->output_bfd
, (bfd_vma
) pr
->addend
, erel
.r_addend
);
3823 #endif /* MY_put_ext_reloc */
3825 rel_ptr
= (void *) &erel
;
3828 amt
= obj_reloc_entry_size (finfo
->output_bfd
);
3829 if (bfd_seek (finfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3830 || bfd_bwrite (rel_ptr
, amt
, finfo
->output_bfd
) != amt
)
3833 *reloff_ptr
+= obj_reloc_entry_size (finfo
->output_bfd
);
3835 /* Assert that the relocs have not run into the symbols, and that n
3836 the text relocs have not run into the data relocs. */
3837 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (finfo
->output_bfd
)
3838 && (reloff_ptr
!= &finfo
->treloff
3840 <= obj_datasec (finfo
->output_bfd
)->rel_filepos
)));
3845 /* Get the section corresponding to a reloc index. */
3847 static INLINE asection
*
3848 aout_reloc_index_to_section (bfd
*abfd
, int indx
)
3850 switch (indx
& N_TYPE
)
3852 case N_TEXT
: return obj_textsec (abfd
);
3853 case N_DATA
: return obj_datasec (abfd
);
3854 case N_BSS
: return obj_bsssec (abfd
);
3856 case N_UNDF
: return bfd_abs_section_ptr
;
3862 /* Relocate an a.out section using standard a.out relocs. */
3865 aout_link_input_section_std (struct aout_final_link_info
*finfo
,
3867 asection
*input_section
,
3868 struct reloc_std_external
*relocs
,
3869 bfd_size_type rel_size
,
3872 bfd_boolean (*check_dynamic_reloc
)
3873 (struct bfd_link_info
*, bfd
*, asection
*,
3874 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3877 bfd_boolean relocatable
;
3878 struct external_nlist
*syms
;
3880 struct aout_link_hash_entry
**sym_hashes
;
3882 bfd_size_type reloc_count
;
3883 struct reloc_std_external
*rel
;
3884 struct reloc_std_external
*rel_end
;
3886 output_bfd
= finfo
->output_bfd
;
3887 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
3889 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
3890 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
3891 == output_bfd
->xvec
->header_byteorder
);
3893 relocatable
= finfo
->info
->relocatable
;
3894 syms
= obj_aout_external_syms (input_bfd
);
3895 strings
= obj_aout_external_strings (input_bfd
);
3896 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
3897 symbol_map
= finfo
->symbol_map
;
3899 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
3901 rel_end
= rel
+ reloc_count
;
3902 for (; rel
< rel_end
; rel
++)
3909 reloc_howto_type
*howto
;
3910 struct aout_link_hash_entry
*h
= NULL
;
3912 bfd_reloc_status_type r
;
3914 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
3916 #ifdef MY_reloc_howto
3917 howto
= MY_reloc_howto (input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
3923 unsigned int howto_idx
;
3925 if (bfd_header_big_endian (input_bfd
))
3927 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
3928 | ((unsigned int) rel
->r_index
[1] << 8)
3930 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
3931 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
3932 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
3933 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
3934 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
3935 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
3936 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
3940 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
3941 | ((unsigned int) rel
->r_index
[1] << 8)
3943 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
3944 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
3945 r_baserel
= (0 != (rel
->r_type
[0]
3946 & RELOC_STD_BITS_BASEREL_LITTLE
));
3947 r_jmptable
= (0 != (rel
->r_type
[0]
3948 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
3949 r_relative
= (0 != (rel
->r_type
[0]
3950 & RELOC_STD_BITS_RELATIVE_LITTLE
));
3951 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
3952 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
3955 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
3956 + 16 * r_jmptable
+ 32 * r_relative
);
3957 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_std
));
3958 howto
= howto_table_std
+ howto_idx
;
3964 /* We are generating a relocatable output file, and must
3965 modify the reloc accordingly. */
3968 /* If we know the symbol this relocation is against,
3969 convert it into a relocation against a section. This
3970 is what the native linker does. */
3971 h
= sym_hashes
[r_index
];
3973 && (h
->root
.type
== bfd_link_hash_defined
3974 || h
->root
.type
== bfd_link_hash_defweak
))
3976 asection
*output_section
;
3978 /* Change the r_extern value. */
3979 if (bfd_header_big_endian (output_bfd
))
3980 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
3982 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
3984 /* Compute a new r_index. */
3985 output_section
= h
->root
.u
.def
.section
->output_section
;
3986 if (output_section
== obj_textsec (output_bfd
))
3988 else if (output_section
== obj_datasec (output_bfd
))
3990 else if (output_section
== obj_bsssec (output_bfd
))
3995 /* Add the symbol value and the section VMA to the
3996 addend stored in the contents. */
3997 relocation
= (h
->root
.u
.def
.value
3998 + output_section
->vma
3999 + h
->root
.u
.def
.section
->output_offset
);
4003 /* We must change r_index according to the symbol
4005 r_index
= symbol_map
[r_index
];
4011 /* We decided to strip this symbol, but it
4012 turns out that we can't. Note that we
4013 lose the other and desc information here.
4014 I don't think that will ever matter for a
4020 if (! aout_link_write_other_symbol (h
,
4030 name
= strings
+ GET_WORD (input_bfd
,
4031 syms
[r_index
].e_strx
);
4032 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
4033 (finfo
->info
, name
, input_bfd
, input_section
,
4043 /* Write out the new r_index value. */
4044 if (bfd_header_big_endian (output_bfd
))
4046 rel
->r_index
[0] = r_index
>> 16;
4047 rel
->r_index
[1] = r_index
>> 8;
4048 rel
->r_index
[2] = r_index
;
4052 rel
->r_index
[2] = r_index
>> 16;
4053 rel
->r_index
[1] = r_index
>> 8;
4054 rel
->r_index
[0] = r_index
;
4061 /* This is a relocation against a section. We must
4062 adjust by the amount that the section moved. */
4063 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4064 relocation
= (section
->output_section
->vma
4065 + section
->output_offset
4069 /* Change the address of the relocation. */
4070 PUT_WORD (output_bfd
,
4071 r_addr
+ input_section
->output_offset
,
4074 /* Adjust a PC relative relocation by removing the reference
4075 to the original address in the section and including the
4076 reference to the new address. */
4078 relocation
-= (input_section
->output_section
->vma
4079 + input_section
->output_offset
4080 - input_section
->vma
);
4082 #ifdef MY_relocatable_reloc
4083 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4086 if (relocation
== 0)
4089 r
= MY_relocate_contents (howto
,
4090 input_bfd
, relocation
,
4097 /* We are generating an executable, and must do a full
4103 h
= sym_hashes
[r_index
];
4106 && (h
->root
.type
== bfd_link_hash_defined
4107 || h
->root
.type
== bfd_link_hash_defweak
))
4109 relocation
= (h
->root
.u
.def
.value
4110 + h
->root
.u
.def
.section
->output_section
->vma
4111 + h
->root
.u
.def
.section
->output_offset
);
4114 && h
->root
.type
== bfd_link_hash_undefweak
)
4126 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4127 relocation
= (section
->output_section
->vma
4128 + section
->output_offset
4131 relocation
+= input_section
->vma
;
4134 if (check_dynamic_reloc
!= NULL
)
4138 if (! ((*check_dynamic_reloc
)
4139 (finfo
->info
, input_bfd
, input_section
, h
,
4140 (void *) rel
, contents
, &skip
, &relocation
)))
4146 /* Now warn if a global symbol is undefined. We could not
4147 do this earlier, because check_dynamic_reloc might want
4148 to skip this reloc. */
4149 if (hundef
&& ! finfo
->info
->shared
&& ! r_baserel
)
4154 name
= h
->root
.root
.string
;
4156 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4157 if (! ((*finfo
->info
->callbacks
->undefined_symbol
)
4158 (finfo
->info
, name
, input_bfd
, input_section
,
4163 r
= MY_final_link_relocate (howto
,
4164 input_bfd
, input_section
,
4165 contents
, r_addr
, relocation
,
4169 if (r
!= bfd_reloc_ok
)
4174 case bfd_reloc_outofrange
:
4176 case bfd_reloc_overflow
:
4183 name
= strings
+ GET_WORD (input_bfd
,
4184 syms
[r_index
].e_strx
);
4189 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4190 name
= bfd_section_name (input_bfd
, s
);
4192 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
4193 (finfo
->info
, (h
? &h
->root
: NULL
), name
,
4194 howto
->name
, (bfd_vma
) 0, input_bfd
,
4195 input_section
, r_addr
)))
4206 /* Relocate an a.out section using extended a.out relocs. */
4209 aout_link_input_section_ext (struct aout_final_link_info
*finfo
,
4211 asection
*input_section
,
4212 struct reloc_ext_external
*relocs
,
4213 bfd_size_type rel_size
,
4216 bfd_boolean (*check_dynamic_reloc
)
4217 (struct bfd_link_info
*, bfd
*, asection
*,
4218 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
4221 bfd_boolean relocatable
;
4222 struct external_nlist
*syms
;
4224 struct aout_link_hash_entry
**sym_hashes
;
4226 bfd_size_type reloc_count
;
4227 struct reloc_ext_external
*rel
;
4228 struct reloc_ext_external
*rel_end
;
4230 output_bfd
= finfo
->output_bfd
;
4231 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4233 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
4234 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4235 == output_bfd
->xvec
->header_byteorder
);
4237 relocatable
= finfo
->info
->relocatable
;
4238 syms
= obj_aout_external_syms (input_bfd
);
4239 strings
= obj_aout_external_strings (input_bfd
);
4240 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4241 symbol_map
= finfo
->symbol_map
;
4243 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
4245 rel_end
= rel
+ reloc_count
;
4246 for (; rel
< rel_end
; rel
++)
4251 unsigned int r_type
;
4253 struct aout_link_hash_entry
*h
= NULL
;
4254 asection
*r_section
= NULL
;
4257 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4259 if (bfd_header_big_endian (input_bfd
))
4261 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4262 | ((unsigned int) rel
->r_index
[1] << 8)
4264 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
4265 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
4266 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
4270 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4271 | ((unsigned int) rel
->r_index
[1] << 8)
4273 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
4274 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
4275 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
4278 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
4280 BFD_ASSERT (r_type
< TABLE_SIZE (howto_table_ext
));
4284 /* We are generating a relocatable output file, and must
4285 modify the reloc accordingly. */
4287 || r_type
== (unsigned int) RELOC_BASE10
4288 || r_type
== (unsigned int) RELOC_BASE13
4289 || r_type
== (unsigned int) RELOC_BASE22
)
4291 /* If we know the symbol this relocation is against,
4292 convert it into a relocation against a section. This
4293 is what the native linker does. */
4294 if (r_type
== (unsigned int) RELOC_BASE10
4295 || r_type
== (unsigned int) RELOC_BASE13
4296 || r_type
== (unsigned int) RELOC_BASE22
)
4299 h
= sym_hashes
[r_index
];
4301 && (h
->root
.type
== bfd_link_hash_defined
4302 || h
->root
.type
== bfd_link_hash_defweak
))
4304 asection
*output_section
;
4306 /* Change the r_extern value. */
4307 if (bfd_header_big_endian (output_bfd
))
4308 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
4310 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
4312 /* Compute a new r_index. */
4313 output_section
= h
->root
.u
.def
.section
->output_section
;
4314 if (output_section
== obj_textsec (output_bfd
))
4316 else if (output_section
== obj_datasec (output_bfd
))
4318 else if (output_section
== obj_bsssec (output_bfd
))
4323 /* Add the symbol value and the section VMA to the
4325 relocation
= (h
->root
.u
.def
.value
4326 + output_section
->vma
4327 + h
->root
.u
.def
.section
->output_offset
);
4329 /* Now RELOCATION is the VMA of the final
4330 destination. If this is a PC relative reloc,
4331 then ADDEND is the negative of the source VMA.
4332 We want to set ADDEND to the difference between
4333 the destination VMA and the source VMA, which
4334 means we must adjust RELOCATION by the change in
4335 the source VMA. This is done below. */
4339 /* We must change r_index according to the symbol
4341 r_index
= symbol_map
[r_index
];
4347 /* We decided to strip this symbol, but it
4348 turns out that we can't. Note that we
4349 lose the other and desc information here.
4350 I don't think that will ever matter for a
4356 if (! aout_link_write_other_symbol (h
,
4366 name
= strings
+ GET_WORD (input_bfd
,
4367 syms
[r_index
].e_strx
);
4368 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
4369 (finfo
->info
, name
, input_bfd
, input_section
,
4378 /* If this is a PC relative reloc, then the addend
4379 is the negative of the source VMA. We must
4380 adjust it by the change in the source VMA. This
4384 /* Write out the new r_index value. */
4385 if (bfd_header_big_endian (output_bfd
))
4387 rel
->r_index
[0] = r_index
>> 16;
4388 rel
->r_index
[1] = r_index
>> 8;
4389 rel
->r_index
[2] = r_index
;
4393 rel
->r_index
[2] = r_index
>> 16;
4394 rel
->r_index
[1] = r_index
>> 8;
4395 rel
->r_index
[0] = r_index
;
4400 /* This is a relocation against a section. We must
4401 adjust by the amount that the section moved. */
4402 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4403 relocation
= (r_section
->output_section
->vma
4404 + r_section
->output_offset
4407 /* If this is a PC relative reloc, then the addend is
4408 the difference in VMA between the destination and the
4409 source. We have just adjusted for the change in VMA
4410 of the destination, so we must also adjust by the
4411 change in VMA of the source. This is done below. */
4414 /* As described above, we must always adjust a PC relative
4415 reloc by the change in VMA of the source. However, if
4416 pcrel_offset is set, then the addend does not include the
4417 location within the section, in which case we don't need
4418 to adjust anything. */
4419 if (howto_table_ext
[r_type
].pc_relative
4420 && ! howto_table_ext
[r_type
].pcrel_offset
)
4421 relocation
-= (input_section
->output_section
->vma
4422 + input_section
->output_offset
4423 - input_section
->vma
);
4425 /* Change the addend if necessary. */
4426 if (relocation
!= 0)
4427 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
4429 /* Change the address of the relocation. */
4430 PUT_WORD (output_bfd
,
4431 r_addr
+ input_section
->output_offset
,
4437 bfd_reloc_status_type r
;
4439 /* We are generating an executable, and must do a full
4445 h
= sym_hashes
[r_index
];
4448 && (h
->root
.type
== bfd_link_hash_defined
4449 || h
->root
.type
== bfd_link_hash_defweak
))
4451 relocation
= (h
->root
.u
.def
.value
4452 + h
->root
.u
.def
.section
->output_section
->vma
4453 + h
->root
.u
.def
.section
->output_offset
);
4456 && h
->root
.type
== bfd_link_hash_undefweak
)
4464 else if (r_type
== (unsigned int) RELOC_BASE10
4465 || r_type
== (unsigned int) RELOC_BASE13
4466 || r_type
== (unsigned int) RELOC_BASE22
)
4468 struct external_nlist
*sym
;
4471 /* For base relative relocs, r_index is always an index
4472 into the symbol table, even if r_extern is 0. */
4473 sym
= syms
+ r_index
;
4474 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4475 if ((type
& N_TYPE
) == N_TEXT
4477 r_section
= obj_textsec (input_bfd
);
4478 else if ((type
& N_TYPE
) == N_DATA
4480 r_section
= obj_datasec (input_bfd
);
4481 else if ((type
& N_TYPE
) == N_BSS
4483 r_section
= obj_bsssec (input_bfd
);
4484 else if ((type
& N_TYPE
) == N_ABS
4486 r_section
= bfd_abs_section_ptr
;
4489 relocation
= (r_section
->output_section
->vma
4490 + r_section
->output_offset
4491 + (GET_WORD (input_bfd
, sym
->e_value
)
4496 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4498 /* If this is a PC relative reloc, then R_ADDEND is the
4499 difference between the two vmas, or
4500 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4502 old_dest_sec == section->vma
4504 old_src_sec == input_section->vma
4506 old_src_off == r_addr
4508 _bfd_final_link_relocate expects RELOCATION +
4509 R_ADDEND to be the VMA of the destination minus
4510 r_addr (the minus r_addr is because this relocation
4511 is not pcrel_offset, which is a bit confusing and
4512 should, perhaps, be changed), or
4515 new_dest_sec == output_section->vma + output_offset
4516 We arrange for this to happen by setting RELOCATION to
4517 new_dest_sec + old_src_sec - old_dest_sec
4519 If this is not a PC relative reloc, then R_ADDEND is
4520 simply the VMA of the destination, so we set
4521 RELOCATION to the change in the destination VMA, or
4522 new_dest_sec - old_dest_sec
4524 relocation
= (r_section
->output_section
->vma
4525 + r_section
->output_offset
4527 if (howto_table_ext
[r_type
].pc_relative
)
4528 relocation
+= input_section
->vma
;
4531 if (check_dynamic_reloc
!= NULL
)
4535 if (! ((*check_dynamic_reloc
)
4536 (finfo
->info
, input_bfd
, input_section
, h
,
4537 (void *) rel
, contents
, &skip
, &relocation
)))
4543 /* Now warn if a global symbol is undefined. We could not
4544 do this earlier, because check_dynamic_reloc might want
4545 to skip this reloc. */
4547 && ! finfo
->info
->shared
4548 && r_type
!= (unsigned int) RELOC_BASE10
4549 && r_type
!= (unsigned int) RELOC_BASE13
4550 && r_type
!= (unsigned int) RELOC_BASE22
)
4555 name
= h
->root
.root
.string
;
4557 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4558 if (! ((*finfo
->info
->callbacks
->undefined_symbol
)
4559 (finfo
->info
, name
, input_bfd
, input_section
,
4564 if (r_type
!= (unsigned int) RELOC_SPARC_REV32
)
4565 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
4566 input_bfd
, input_section
,
4567 contents
, r_addr
, relocation
,
4573 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
4574 x
= x
+ relocation
+ r_addend
;
4575 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
4579 if (r
!= bfd_reloc_ok
)
4584 case bfd_reloc_outofrange
:
4586 case bfd_reloc_overflow
:
4593 || r_type
== (unsigned int) RELOC_BASE10
4594 || r_type
== (unsigned int) RELOC_BASE13
4595 || r_type
== (unsigned int) RELOC_BASE22
)
4596 name
= strings
+ GET_WORD (input_bfd
,
4597 syms
[r_index
].e_strx
);
4602 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4603 name
= bfd_section_name (input_bfd
, s
);
4605 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
4606 (finfo
->info
, (h
? &h
->root
: NULL
), name
,
4607 howto_table_ext
[r_type
].name
,
4608 r_addend
, input_bfd
, input_section
, r_addr
)))
4620 /* Link an a.out section into the output file. */
4623 aout_link_input_section (struct aout_final_link_info
*finfo
,
4625 asection
*input_section
,
4626 file_ptr
*reloff_ptr
,
4627 bfd_size_type rel_size
)
4629 bfd_size_type input_size
;
4632 /* Get the section contents. */
4633 input_size
= input_section
->size
;
4634 if (! bfd_get_section_contents (input_bfd
, input_section
,
4635 (void *) finfo
->contents
,
4636 (file_ptr
) 0, input_size
))
4639 /* Read in the relocs if we haven't already done it. */
4640 if (aout_section_data (input_section
) != NULL
4641 && aout_section_data (input_section
)->relocs
!= NULL
)
4642 relocs
= aout_section_data (input_section
)->relocs
;
4645 relocs
= finfo
->relocs
;
4648 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4649 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
4654 /* Relocate the section contents. */
4655 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4657 if (! aout_link_input_section_std (finfo
, input_bfd
, input_section
,
4658 (struct reloc_std_external
*) relocs
,
4659 rel_size
, finfo
->contents
))
4664 if (! aout_link_input_section_ext (finfo
, input_bfd
, input_section
,
4665 (struct reloc_ext_external
*) relocs
,
4666 rel_size
, finfo
->contents
))
4670 /* Write out the section contents. */
4671 if (! bfd_set_section_contents (finfo
->output_bfd
,
4672 input_section
->output_section
,
4673 (void *) finfo
->contents
,
4674 (file_ptr
) input_section
->output_offset
,
4678 /* If we are producing relocatable output, the relocs were
4679 modified, and we now write them out. */
4680 if (finfo
->info
->relocatable
&& rel_size
> 0)
4682 if (bfd_seek (finfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4684 if (bfd_bwrite (relocs
, rel_size
, finfo
->output_bfd
) != rel_size
)
4686 *reloff_ptr
+= rel_size
;
4688 /* Assert that the relocs have not run into the symbols, and
4689 that if these are the text relocs they have not run into the
4691 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (finfo
->output_bfd
)
4692 && (reloff_ptr
!= &finfo
->treloff
4694 <= obj_datasec (finfo
->output_bfd
)->rel_filepos
)));
4700 /* Adjust and write out the symbols for an a.out file. Set the new
4701 symbol indices into a symbol_map. */
4704 aout_link_write_symbols (struct aout_final_link_info
*finfo
, bfd
*input_bfd
)
4707 bfd_size_type sym_count
;
4709 enum bfd_link_strip strip
;
4710 enum bfd_link_discard discard
;
4711 struct external_nlist
*outsym
;
4712 bfd_size_type strtab_index
;
4713 struct external_nlist
*sym
;
4714 struct external_nlist
*sym_end
;
4715 struct aout_link_hash_entry
**sym_hash
;
4718 bfd_boolean skip_next
;
4720 output_bfd
= finfo
->output_bfd
;
4721 sym_count
= obj_aout_external_sym_count (input_bfd
);
4722 strings
= obj_aout_external_strings (input_bfd
);
4723 strip
= finfo
->info
->strip
;
4724 discard
= finfo
->info
->discard
;
4725 outsym
= finfo
->output_syms
;
4727 /* First write out a symbol for this object file, unless we are
4728 discarding such symbols. */
4729 if (strip
!= strip_all
4730 && (strip
!= strip_some
4731 || bfd_hash_lookup (finfo
->info
->keep_hash
, input_bfd
->filename
,
4732 FALSE
, FALSE
) != NULL
)
4733 && discard
!= discard_all
)
4735 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4736 H_PUT_8 (output_bfd
, 0, outsym
->e_other
);
4737 H_PUT_16 (output_bfd
, 0, outsym
->e_desc
);
4738 strtab_index
= add_to_stringtab (output_bfd
, finfo
->strtab
,
4739 input_bfd
->filename
, FALSE
);
4740 if (strtab_index
== (bfd_size_type
) -1)
4742 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4743 PUT_WORD (output_bfd
,
4744 (bfd_get_section_vma (output_bfd
,
4745 obj_textsec (input_bfd
)->output_section
)
4746 + obj_textsec (input_bfd
)->output_offset
),
4748 ++obj_aout_external_sym_count (output_bfd
);
4754 sym
= obj_aout_external_syms (input_bfd
);
4755 sym_end
= sym
+ sym_count
;
4756 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4757 symbol_map
= finfo
->symbol_map
;
4758 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4759 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4763 struct aout_link_hash_entry
*h
;
4769 /* We set *symbol_map to 0 above for all symbols. If it has
4770 already been set to -1 for this symbol, it means that we are
4771 discarding it because it appears in a duplicate header file.
4772 See the N_BINCL code below. */
4773 if (*symbol_map
== -1)
4776 /* Initialize *symbol_map to -1, which means that the symbol was
4777 not copied into the output file. We will change it later if
4778 we do copy the symbol over. */
4781 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4782 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4788 /* Pass this symbol through. It is the target of an
4789 indirect or warning symbol. */
4790 val
= GET_WORD (input_bfd
, sym
->e_value
);
4795 /* Skip this symbol, which is the target of an indirect
4796 symbol that we have changed to no longer be an indirect
4803 struct aout_link_hash_entry
*hresolve
;
4805 /* We have saved the hash table entry for this symbol, if
4806 there is one. Note that we could just look it up again
4807 in the hash table, provided we first check that it is an
4811 /* Use the name from the hash table, in case the symbol was
4814 && h
->root
.type
!= bfd_link_hash_warning
)
4815 name
= h
->root
.root
.string
;
4817 /* If this is an indirect or warning symbol, then change
4818 hresolve to the base symbol. We also change *sym_hash so
4819 that the relocation routines relocate against the real
4822 if (h
!= (struct aout_link_hash_entry
*) NULL
4823 && (h
->root
.type
== bfd_link_hash_indirect
4824 || h
->root
.type
== bfd_link_hash_warning
))
4826 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4827 while (hresolve
->root
.type
== bfd_link_hash_indirect
4828 || hresolve
->root
.type
== bfd_link_hash_warning
)
4829 hresolve
= ((struct aout_link_hash_entry
*)
4830 hresolve
->root
.u
.i
.link
);
4831 *sym_hash
= hresolve
;
4834 /* If the symbol has already been written out, skip it. */
4838 if ((type
& N_TYPE
) == N_INDR
4839 || type
== N_WARNING
)
4841 *symbol_map
= h
->indx
;
4845 /* See if we are stripping this symbol. */
4851 case strip_debugger
:
4852 if ((type
& N_STAB
) != 0)
4856 if (bfd_hash_lookup (finfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4871 /* Get the value of the symbol. */
4872 if ((type
& N_TYPE
) == N_TEXT
4874 symsec
= obj_textsec (input_bfd
);
4875 else if ((type
& N_TYPE
) == N_DATA
4877 symsec
= obj_datasec (input_bfd
);
4878 else if ((type
& N_TYPE
) == N_BSS
4880 symsec
= obj_bsssec (input_bfd
);
4881 else if ((type
& N_TYPE
) == N_ABS
4883 symsec
= bfd_abs_section_ptr
;
4884 else if (((type
& N_TYPE
) == N_INDR
4885 && (hresolve
== NULL
4886 || (hresolve
->root
.type
!= bfd_link_hash_defined
4887 && hresolve
->root
.type
!= bfd_link_hash_defweak
4888 && hresolve
->root
.type
!= bfd_link_hash_common
)))
4889 || type
== N_WARNING
)
4891 /* Pass the next symbol through unchanged. The
4892 condition above for indirect symbols is so that if
4893 the indirect symbol was defined, we output it with
4894 the correct definition so the debugger will
4897 val
= GET_WORD (input_bfd
, sym
->e_value
);
4900 else if ((type
& N_STAB
) != 0)
4902 val
= GET_WORD (input_bfd
, sym
->e_value
);
4907 /* If we get here with an indirect symbol, it means that
4908 we are outputting it with a real definition. In such
4909 a case we do not want to output the next symbol,
4910 which is the target of the indirection. */
4911 if ((type
& N_TYPE
) == N_INDR
)
4916 /* We need to get the value from the hash table. We use
4917 hresolve so that if we have defined an indirect
4918 symbol we output the final definition. */
4921 switch (type
& N_TYPE
)
4924 symsec
= obj_textsec (input_bfd
);
4927 symsec
= obj_datasec (input_bfd
);
4930 symsec
= obj_bsssec (input_bfd
);
4933 symsec
= bfd_abs_section_ptr
;
4940 else if (hresolve
->root
.type
== bfd_link_hash_defined
4941 || hresolve
->root
.type
== bfd_link_hash_defweak
)
4943 asection
*input_section
;
4944 asection
*output_section
;
4946 /* This case usually means a common symbol which was
4947 turned into a defined symbol. */
4948 input_section
= hresolve
->root
.u
.def
.section
;
4949 output_section
= input_section
->output_section
;
4950 BFD_ASSERT (bfd_is_abs_section (output_section
)
4951 || output_section
->owner
== output_bfd
);
4952 val
= (hresolve
->root
.u
.def
.value
4953 + bfd_get_section_vma (output_bfd
, output_section
)
4954 + input_section
->output_offset
);
4956 /* Get the correct type based on the section. If
4957 this is a constructed set, force it to be
4958 globally visible. */
4967 if (output_section
== obj_textsec (output_bfd
))
4968 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4971 else if (output_section
== obj_datasec (output_bfd
))
4972 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4975 else if (output_section
== obj_bsssec (output_bfd
))
4976 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4980 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4984 else if (hresolve
->root
.type
== bfd_link_hash_common
)
4985 val
= hresolve
->root
.u
.c
.size
;
4986 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
4995 val
= (symsec
->output_section
->vma
4996 + symsec
->output_offset
4997 + (GET_WORD (input_bfd
, sym
->e_value
)
5000 /* If this is a global symbol set the written flag, and if
5001 it is a local symbol see if we should discard it. */
5005 h
->indx
= obj_aout_external_sym_count (output_bfd
);
5007 else if ((type
& N_TYPE
) != N_SETT
5008 && (type
& N_TYPE
) != N_SETD
5009 && (type
& N_TYPE
) != N_SETB
5010 && (type
& N_TYPE
) != N_SETA
)
5015 case discard_sec_merge
:
5018 if ((type
& N_STAB
) == 0
5019 && bfd_is_local_label_name (input_bfd
, name
))
5033 /* An N_BINCL symbol indicates the start of the stabs
5034 entries for a header file. We need to scan ahead to the
5035 next N_EINCL symbol, ignoring nesting, adding up all the
5036 characters in the symbol names, not including the file
5037 numbers in types (the first number after an open
5039 if (type
== (int) N_BINCL
)
5041 struct external_nlist
*incl_sym
;
5043 struct aout_link_includes_entry
*incl_entry
;
5044 struct aout_link_includes_totals
*t
;
5048 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
5052 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5053 if (incl_type
== (int) N_EINCL
)
5059 else if (incl_type
== (int) N_BINCL
)
5065 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
5066 for (; *s
!= '\0'; s
++)
5071 /* Skip the file number. */
5073 while (ISDIGIT (*s
))
5081 /* If we have already included a header file with the
5082 same value, then replace this one with an N_EXCL
5084 copy
= (bfd_boolean
) (! finfo
->info
->keep_memory
);
5085 incl_entry
= aout_link_includes_lookup (&finfo
->includes
,
5087 if (incl_entry
== NULL
)
5089 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
5090 if (t
->total
== val
)
5094 /* This is the first time we have seen this header
5095 file with this set of stabs strings. */
5096 t
= bfd_hash_allocate (&finfo
->includes
.root
,
5101 t
->next
= incl_entry
->totals
;
5102 incl_entry
->totals
= t
;
5108 /* This is a duplicate header file. We must change
5109 it to be an N_EXCL entry, and mark all the
5110 included symbols to prevent outputting them. */
5111 type
= (int) N_EXCL
;
5114 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
5116 incl_sym
++, incl_map
++)
5120 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5121 if (incl_type
== (int) N_EINCL
)
5130 else if (incl_type
== (int) N_BINCL
)
5139 /* Copy this symbol into the list of symbols we are going to
5141 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
5142 H_PUT_8 (output_bfd
, H_GET_8 (input_bfd
, sym
->e_other
), outsym
->e_other
);
5143 H_PUT_16 (output_bfd
, H_GET_16 (input_bfd
, sym
->e_desc
), outsym
->e_desc
);
5145 if (! finfo
->info
->keep_memory
)
5147 /* name points into a string table which we are going to
5148 free. If there is a hash table entry, use that string.
5149 Otherwise, copy name into memory. */
5151 name
= h
->root
.root
.string
;
5155 strtab_index
= add_to_stringtab (output_bfd
, finfo
->strtab
,
5157 if (strtab_index
== (bfd_size_type
) -1)
5159 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
5160 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
5161 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
5162 ++obj_aout_external_sym_count (output_bfd
);
5166 /* Write out the output symbols we have just constructed. */
5167 if (outsym
> finfo
->output_syms
)
5169 bfd_size_type outsym_size
;
5171 if (bfd_seek (output_bfd
, finfo
->symoff
, SEEK_SET
) != 0)
5173 outsym_size
= outsym
- finfo
->output_syms
;
5174 outsym_size
*= EXTERNAL_NLIST_SIZE
;
5175 if (bfd_bwrite ((void *) finfo
->output_syms
, outsym_size
, output_bfd
)
5178 finfo
->symoff
+= outsym_size
;
5184 /* Link an a.out input BFD into the output file. */
5187 aout_link_input_bfd (struct aout_final_link_info
*finfo
, bfd
*input_bfd
)
5189 bfd_size_type sym_count
;
5191 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
5193 /* If this is a dynamic object, it may need special handling. */
5194 if ((input_bfd
->flags
& DYNAMIC
) != 0
5195 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
5196 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
5197 (finfo
->info
, input_bfd
));
5199 /* Get the symbols. We probably have them already, unless
5200 finfo->info->keep_memory is FALSE. */
5201 if (! aout_get_external_symbols (input_bfd
))
5204 sym_count
= obj_aout_external_sym_count (input_bfd
);
5206 /* Write out the symbols and get a map of the new indices. The map
5207 is placed into finfo->symbol_map. */
5208 if (! aout_link_write_symbols (finfo
, input_bfd
))
5211 /* Relocate and write out the sections. These functions use the
5212 symbol map created by aout_link_write_symbols. The linker_mark
5213 field will be set if these sections are to be included in the
5214 link, which will normally be the case. */
5215 if (obj_textsec (input_bfd
)->linker_mark
)
5217 if (! aout_link_input_section (finfo
, input_bfd
,
5218 obj_textsec (input_bfd
),
5220 exec_hdr (input_bfd
)->a_trsize
))
5223 if (obj_datasec (input_bfd
)->linker_mark
)
5225 if (! aout_link_input_section (finfo
, input_bfd
,
5226 obj_datasec (input_bfd
),
5228 exec_hdr (input_bfd
)->a_drsize
))
5232 /* If we are not keeping memory, we don't need the symbols any
5233 longer. We still need them if we are keeping memory, because the
5234 strings in the hash table point into them. */
5235 if (! finfo
->info
->keep_memory
)
5237 if (! aout_link_free_symbols (input_bfd
))
5244 /* Do the final link step. This is called on the output BFD. The
5245 INFO structure should point to a list of BFDs linked through the
5246 link_next field which can be used to find each BFD which takes part
5247 in the output. Also, each section in ABFD should point to a list
5248 of bfd_link_order structures which list all the input sections for
5249 the output section. */
5252 NAME (aout
, final_link
) (bfd
*abfd
,
5253 struct bfd_link_info
*info
,
5254 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
5256 struct aout_final_link_info aout_info
;
5257 bfd_boolean includes_hash_initialized
= FALSE
;
5259 bfd_size_type trsize
, drsize
;
5260 bfd_size_type max_contents_size
;
5261 bfd_size_type max_relocs_size
;
5262 bfd_size_type max_sym_count
;
5263 bfd_size_type text_size
;
5265 struct bfd_link_order
*p
;
5267 bfd_boolean have_link_order_relocs
;
5270 abfd
->flags
|= DYNAMIC
;
5272 aout_info
.info
= info
;
5273 aout_info
.output_bfd
= abfd
;
5274 aout_info
.contents
= NULL
;
5275 aout_info
.relocs
= NULL
;
5276 aout_info
.symbol_map
= NULL
;
5277 aout_info
.output_syms
= NULL
;
5279 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
5280 aout_link_includes_newfunc
,
5281 sizeof (struct aout_link_includes_entry
),
5284 includes_hash_initialized
= TRUE
;
5286 /* Figure out the largest section size. Also, if generating
5287 relocatable output, count the relocs. */
5290 max_contents_size
= 0;
5291 max_relocs_size
= 0;
5293 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
5297 if (info
->relocatable
)
5299 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5301 trsize
+= exec_hdr (sub
)->a_trsize
;
5302 drsize
+= exec_hdr (sub
)->a_drsize
;
5306 /* FIXME: We need to identify the .text and .data sections
5307 and call get_reloc_upper_bound and canonicalize_reloc to
5308 work out the number of relocs needed, and then multiply
5309 by the reloc size. */
5310 (*_bfd_error_handler
)
5311 (_("%s: relocatable link from %s to %s not supported"),
5312 bfd_get_filename (abfd
),
5313 sub
->xvec
->name
, abfd
->xvec
->name
);
5314 bfd_set_error (bfd_error_invalid_operation
);
5319 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5321 sz
= obj_textsec (sub
)->size
;
5322 if (sz
> max_contents_size
)
5323 max_contents_size
= sz
;
5324 sz
= obj_datasec (sub
)->size
;
5325 if (sz
> max_contents_size
)
5326 max_contents_size
= sz
;
5328 sz
= exec_hdr (sub
)->a_trsize
;
5329 if (sz
> max_relocs_size
)
5330 max_relocs_size
= sz
;
5331 sz
= exec_hdr (sub
)->a_drsize
;
5332 if (sz
> max_relocs_size
)
5333 max_relocs_size
= sz
;
5335 sz
= obj_aout_external_sym_count (sub
);
5336 if (sz
> max_sym_count
)
5341 if (info
->relocatable
)
5343 if (obj_textsec (abfd
) != NULL
)
5344 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
5345 ->map_head
.link_order
)
5346 * obj_reloc_entry_size (abfd
));
5347 if (obj_datasec (abfd
) != NULL
)
5348 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
5349 ->map_head
.link_order
)
5350 * obj_reloc_entry_size (abfd
));
5353 exec_hdr (abfd
)->a_trsize
= trsize
;
5354 exec_hdr (abfd
)->a_drsize
= drsize
;
5356 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
5358 /* Adjust the section sizes and vmas according to the magic number.
5359 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5360 filepos for each section. */
5361 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
5364 /* The relocation and symbol file positions differ among a.out
5365 targets. We are passed a callback routine from the backend
5366 specific code to handle this.
5367 FIXME: At this point we do not know how much space the symbol
5368 table will require. This will not work for any (nonstandard)
5369 a.out target that needs to know the symbol table size before it
5370 can compute the relocation file positions. This may or may not
5371 be the case for the hp300hpux target, for example. */
5372 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
5374 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
5375 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
5376 obj_sym_filepos (abfd
) = aout_info
.symoff
;
5378 /* We keep a count of the symbols as we output them. */
5379 obj_aout_external_sym_count (abfd
) = 0;
5381 /* We accumulate the string table as we write out the symbols. */
5382 aout_info
.strtab
= _bfd_stringtab_init ();
5383 if (aout_info
.strtab
== NULL
)
5386 /* Allocate buffers to hold section contents and relocs. */
5387 aout_info
.contents
= bfd_malloc (max_contents_size
);
5388 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
5389 aout_info
.symbol_map
= bfd_malloc (max_sym_count
* sizeof (int *));
5390 aout_info
.output_syms
= bfd_malloc ((max_sym_count
+ 1)
5391 * sizeof (struct external_nlist
));
5392 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
5393 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
5394 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
5395 || aout_info
.output_syms
== NULL
)
5398 /* If we have a symbol named __DYNAMIC, force it out now. This is
5399 required by SunOS. Doing this here rather than in sunos.c is a
5400 hack, but it's easier than exporting everything which would be
5403 struct aout_link_hash_entry
*h
;
5405 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
5406 FALSE
, FALSE
, FALSE
);
5408 aout_link_write_other_symbol (h
, &aout_info
);
5411 /* The most time efficient way to do the link would be to read all
5412 the input object files into memory and then sort out the
5413 information into the output file. Unfortunately, that will
5414 probably use too much memory. Another method would be to step
5415 through everything that composes the text section and write it
5416 out, and then everything that composes the data section and write
5417 it out, and then write out the relocs, and then write out the
5418 symbols. Unfortunately, that requires reading stuff from each
5419 input file several times, and we will not be able to keep all the
5420 input files open simultaneously, and reopening them will be slow.
5422 What we do is basically process one input file at a time. We do
5423 everything we need to do with an input file once--copy over the
5424 section contents, handle the relocation information, and write
5425 out the symbols--and then we throw away the information we read
5426 from it. This approach requires a lot of lseeks of the output
5427 file, which is unfortunate but still faster than reopening a lot
5430 We use the output_has_begun field of the input BFDs to see
5431 whether we have already handled it. */
5432 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
5433 sub
->output_has_begun
= FALSE
;
5435 /* Mark all sections which are to be included in the link. This
5436 will normally be every section. We need to do this so that we
5437 can identify any sections which the linker has decided to not
5439 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5441 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5442 if (p
->type
== bfd_indirect_link_order
)
5443 p
->u
.indirect
.section
->linker_mark
= TRUE
;
5446 have_link_order_relocs
= FALSE
;
5447 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5449 for (p
= o
->map_head
.link_order
;
5453 if (p
->type
== bfd_indirect_link_order
5454 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
5455 == bfd_target_aout_flavour
))
5459 input_bfd
= p
->u
.indirect
.section
->owner
;
5460 if (! input_bfd
->output_has_begun
)
5462 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
5464 input_bfd
->output_has_begun
= TRUE
;
5467 else if (p
->type
== bfd_section_reloc_link_order
5468 || p
->type
== bfd_symbol_reloc_link_order
)
5470 /* These are handled below. */
5471 have_link_order_relocs
= TRUE
;
5475 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
5481 /* Write out any symbols that we have not already written out. */
5482 aout_link_hash_traverse (aout_hash_table (info
),
5483 aout_link_write_other_symbol
,
5484 (void *) &aout_info
);
5486 /* Now handle any relocs we were asked to create by the linker.
5487 These did not come from any input file. We must do these after
5488 we have written out all the symbols, so that we know the symbol
5490 if (have_link_order_relocs
)
5492 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5494 for (p
= o
->map_head
.link_order
;
5498 if (p
->type
== bfd_section_reloc_link_order
5499 || p
->type
== bfd_symbol_reloc_link_order
)
5501 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
5508 if (aout_info
.contents
!= NULL
)
5510 free (aout_info
.contents
);
5511 aout_info
.contents
= NULL
;
5513 if (aout_info
.relocs
!= NULL
)
5515 free (aout_info
.relocs
);
5516 aout_info
.relocs
= NULL
;
5518 if (aout_info
.symbol_map
!= NULL
)
5520 free (aout_info
.symbol_map
);
5521 aout_info
.symbol_map
= NULL
;
5523 if (aout_info
.output_syms
!= NULL
)
5525 free (aout_info
.output_syms
);
5526 aout_info
.output_syms
= NULL
;
5528 if (includes_hash_initialized
)
5530 bfd_hash_table_free (&aout_info
.includes
.root
);
5531 includes_hash_initialized
= FALSE
;
5534 /* Finish up any dynamic linking we may be doing. */
5535 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
5537 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
5541 /* Update the header information. */
5542 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
5543 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
5544 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
5545 obj_textsec (abfd
)->reloc_count
=
5546 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
5547 obj_datasec (abfd
)->reloc_count
=
5548 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
5550 /* Write out the string table, unless there are no symbols. */
5551 if (abfd
->symcount
> 0)
5553 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
5554 || ! emit_stringtab (abfd
, aout_info
.strtab
))
5557 else if (obj_textsec (abfd
)->reloc_count
== 0
5558 && obj_datasec (abfd
)->reloc_count
== 0)
5564 pos
= obj_datasec (abfd
)->filepos
+ exec_hdr (abfd
)->a_data
- 1;
5565 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
5566 || bfd_bwrite (&b
, (bfd_size_type
) 1, abfd
) != 1)
5573 if (aout_info
.contents
!= NULL
)
5574 free (aout_info
.contents
);
5575 if (aout_info
.relocs
!= NULL
)
5576 free (aout_info
.relocs
);
5577 if (aout_info
.symbol_map
!= NULL
)
5578 free (aout_info
.symbol_map
);
5579 if (aout_info
.output_syms
!= NULL
)
5580 free (aout_info
.output_syms
);
5581 if (includes_hash_initialized
)
5582 bfd_hash_table_free (&aout_info
.includes
.root
);