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 3 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,
22 MA 02110-1301, USA. */
30 BFD supports a number of different flavours of a.out format,
31 though the major differences are only the sizes of the
32 structures on disk, and the shape of the relocation
35 The support is split into a basic support file @file{aoutx.h}
36 and other files which derive functions from the base. One
37 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
38 adds to the basic a.out functions support for sun3, sun4, 386
39 and 29k a.out files, to create a target jump vector for a
42 This information is further split out into more specific files
43 for each machine, including @file{sunos.c} for sun3 and sun4,
44 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
45 demonstration of a 64 bit a.out format.
47 The base file @file{aoutx.h} defines general mechanisms for
48 reading and writing records to and from disk and various
49 other methods which BFD requires. It is included by
50 @file{aout32.c} and @file{aout64.c} to form the names
51 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
53 As an example, this is what goes on to make the back end for a
54 sun4, from @file{aout32.c}:
56 | #define ARCH_SIZE 32
62 | aout_32_canonicalize_reloc
63 | aout_32_find_nearest_line
65 | aout_32_get_reloc_upper_bound
70 | #define TARGET_NAME "a.out-sunos-big"
71 | #define VECNAME sunos_big_vec
74 requires all the names from @file{aout32.c}, and produces the jump vector
78 The file @file{host-aout.c} is a special case. It is for a large set
79 of hosts that use ``more or less standard'' a.out files, and
80 for which cross-debugging is not interesting. It uses the
81 standard 32-bit a.out support routines, but determines the
82 file offsets and addresses of the text, data, and BSS
83 sections, the machine architecture and machine type, and the
84 entry point address, in a host-dependent manner. Once these
85 values have been determined, generic code is used to handle
88 When porting it to run on a new system, you must supply:
92 | HOST_MACHINE_ARCH (optional)
93 | HOST_MACHINE_MACHINE (optional)
94 | HOST_TEXT_START_ADDR
97 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
98 values, plus the structures and macros defined in @file{a.out.h} on
99 your host system, will produce a BFD target that will access
100 ordinary a.out files on your host. To configure a new machine
101 to use @file{host-aout.c}, specify:
103 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
104 | TDEPFILES= host-aout.o trad-core.o
106 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
108 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
109 configuration is selected. */
112 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
113 Doesn't matter what the setting of WP_TEXT is on output, but it'll
115 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
116 * Any BFD with both flags clear is OMAGIC.
117 (Just want to make these explicit, so the conditions tested in this
118 file make sense if you're more familiar with a.out than with BFD.) */
120 #define KEEPIT udata.i
124 #include "safe-ctype.h"
129 #include "aout/aout64.h"
130 #include "aout/stab_gnu.h"
138 The file @file{aoutx.h} provides for both the @emph{standard}
139 and @emph{extended} forms of a.out relocation records.
141 The standard records contain only an
142 address, a symbol index, and a type field. The extended records
143 (used on 29ks and sparcs) also have a full integer for an
146 #ifndef CTOR_TABLE_RELOC_HOWTO
147 #define CTOR_TABLE_RELOC_IDX 2
148 #define CTOR_TABLE_RELOC_HOWTO(BFD) \
149 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
150 ? howto_table_ext : howto_table_std) \
151 + CTOR_TABLE_RELOC_IDX)
154 #ifndef MY_swap_std_reloc_in
155 #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
158 #ifndef MY_swap_ext_reloc_in
159 #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
162 #ifndef MY_swap_std_reloc_out
163 #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
166 #ifndef MY_swap_ext_reloc_out
167 #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
170 #ifndef MY_final_link_relocate
171 #define MY_final_link_relocate _bfd_final_link_relocate
174 #ifndef MY_relocate_contents
175 #define MY_relocate_contents _bfd_relocate_contents
178 #define howto_table_ext NAME (aout, ext_howto_table)
179 #define howto_table_std NAME (aout, std_howto_table)
181 reloc_howto_type howto_table_ext
[] =
183 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
184 HOWTO (RELOC_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
, 0, "8", FALSE
, 0, 0x000000ff, FALSE
),
185 HOWTO (RELOC_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
, 0, "16", FALSE
, 0, 0x0000ffff, FALSE
),
186 HOWTO (RELOC_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "32", FALSE
, 0, 0xffffffff, FALSE
),
187 HOWTO (RELOC_DISP8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0, "DISP8", FALSE
, 0, 0x000000ff, FALSE
),
188 HOWTO (RELOC_DISP16
, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0, "DISP16", FALSE
, 0, 0x0000ffff, FALSE
),
189 HOWTO (RELOC_DISP32
, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0, "DISP32", FALSE
, 0, 0xffffffff, FALSE
),
190 HOWTO (RELOC_WDISP30
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "WDISP30", FALSE
, 0, 0x3fffffff, FALSE
),
191 HOWTO (RELOC_WDISP22
, 2, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "WDISP22", FALSE
, 0, 0x003fffff, FALSE
),
192 HOWTO (RELOC_HI22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "HI22", FALSE
, 0, 0x003fffff, FALSE
),
193 HOWTO (RELOC_22
, 0, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "22", FALSE
, 0, 0x003fffff, FALSE
),
194 HOWTO (RELOC_13
, 0, 2, 13, FALSE
, 0, complain_overflow_bitfield
, 0, "13", FALSE
, 0, 0x00001fff, FALSE
),
195 HOWTO (RELOC_LO10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "LO10", FALSE
, 0, 0x000003ff, FALSE
),
196 HOWTO (RELOC_SFA_BASE
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_BASE", FALSE
, 0, 0xffffffff, FALSE
),
197 HOWTO (RELOC_SFA_OFF13
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_OFF13", FALSE
, 0, 0xffffffff, FALSE
),
198 HOWTO (RELOC_BASE10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "BASE10", FALSE
, 0, 0x000003ff, FALSE
),
199 HOWTO (RELOC_BASE13
, 0, 2, 13, FALSE
, 0, complain_overflow_signed
, 0, "BASE13", FALSE
, 0, 0x00001fff, FALSE
),
200 HOWTO (RELOC_BASE22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "BASE22", FALSE
, 0, 0x003fffff, FALSE
),
201 HOWTO (RELOC_PC10
, 0, 2, 10, TRUE
, 0, complain_overflow_dont
, 0, "PC10", FALSE
, 0, 0x000003ff, TRUE
),
202 HOWTO (RELOC_PC22
, 10, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "PC22", FALSE
, 0, 0x003fffff, TRUE
),
203 HOWTO (RELOC_JMP_TBL
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "JMP_TBL", FALSE
, 0, 0x3fffffff, FALSE
),
204 HOWTO (RELOC_SEGOFF16
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "SEGOFF16", FALSE
, 0, 0x00000000, FALSE
),
205 HOWTO (RELOC_GLOB_DAT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "GLOB_DAT", FALSE
, 0, 0x00000000, FALSE
),
206 HOWTO (RELOC_JMP_SLOT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "JMP_SLOT", FALSE
, 0, 0x00000000, FALSE
),
207 HOWTO (RELOC_RELATIVE
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "RELATIVE", FALSE
, 0, 0x00000000, FALSE
),
208 HOWTO (0, 0, 0, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
209 HOWTO (0, 0, 0, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
210 #define RELOC_SPARC_REV32 RELOC_WDISP19
211 HOWTO (RELOC_SPARC_REV32
, 0, 2, 32, FALSE
, 0, complain_overflow_dont
, 0,"R_SPARC_REV32",FALSE
, 0, 0xffffffff, FALSE
),
214 /* Convert standard reloc records to "arelent" format (incl byte swap). */
216 reloc_howto_type howto_table_std
[] =
218 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
219 HOWTO ( 0, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,0,"8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
220 HOWTO ( 1, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
221 HOWTO ( 2, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
222 HOWTO ( 3, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,0,"64", TRUE
, 0xdeaddead,0xdeaddead, FALSE
),
223 HOWTO ( 4, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0,"DISP8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
224 HOWTO ( 5, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0,"DISP16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
225 HOWTO ( 6, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0,"DISP32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
226 HOWTO ( 7, 0, 4, 64, TRUE
, 0, complain_overflow_signed
, 0,"DISP64", TRUE
, 0xfeedface,0xfeedface, FALSE
),
227 HOWTO ( 8, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"GOT_REL", FALSE
, 0,0x00000000, FALSE
),
228 HOWTO ( 9, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"BASE16", FALSE
,0xffffffff,0xffffffff, FALSE
),
229 HOWTO (10, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"BASE32", FALSE
,0xffffffff,0xffffffff, FALSE
),
235 HOWTO (16, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"JMP_TABLE", FALSE
, 0,0x00000000, FALSE
),
251 HOWTO (32, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"RELATIVE", FALSE
, 0,0x00000000, FALSE
),
259 HOWTO (40, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"BASEREL", FALSE
, 0,0x00000000, FALSE
),
262 #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
265 NAME (aout
, reloc_type_lookup
) (bfd
*abfd
, bfd_reloc_code_real_type code
)
267 #define EXT(i, j) case i: return & howto_table_ext [j]
268 #define STD(i, j) case i: return & howto_table_std [j]
269 int ext
= obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
;
271 if (code
== BFD_RELOC_CTOR
)
272 switch (bfd_get_arch_info (abfd
)->bits_per_address
)
285 EXT (BFD_RELOC_8
, 0);
286 EXT (BFD_RELOC_16
, 1);
287 EXT (BFD_RELOC_32
, 2);
288 EXT (BFD_RELOC_HI22
, 8);
289 EXT (BFD_RELOC_LO10
, 11);
290 EXT (BFD_RELOC_32_PCREL_S2
, 6);
291 EXT (BFD_RELOC_SPARC_WDISP22
, 7);
292 EXT (BFD_RELOC_SPARC13
, 10);
293 EXT (BFD_RELOC_SPARC_GOT10
, 14);
294 EXT (BFD_RELOC_SPARC_BASE13
, 15);
295 EXT (BFD_RELOC_SPARC_GOT13
, 15);
296 EXT (BFD_RELOC_SPARC_GOT22
, 16);
297 EXT (BFD_RELOC_SPARC_PC10
, 17);
298 EXT (BFD_RELOC_SPARC_PC22
, 18);
299 EXT (BFD_RELOC_SPARC_WPLT30
, 19);
300 EXT (BFD_RELOC_SPARC_REV32
, 26);
308 STD (BFD_RELOC_8
, 0);
309 STD (BFD_RELOC_16
, 1);
310 STD (BFD_RELOC_32
, 2);
311 STD (BFD_RELOC_8_PCREL
, 4);
312 STD (BFD_RELOC_16_PCREL
, 5);
313 STD (BFD_RELOC_32_PCREL
, 6);
314 STD (BFD_RELOC_16_BASEREL
, 9);
315 STD (BFD_RELOC_32_BASEREL
, 10);
322 NAME (aout
, reloc_name_lookup
) (bfd
*abfd
, const char *r_name
)
324 unsigned int i
, size
;
325 reloc_howto_type
*howto_table
;
327 if (obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
)
329 howto_table
= howto_table_ext
;
330 size
= sizeof (howto_table_ext
) / sizeof (howto_table_ext
[0]);
334 howto_table
= howto_table_std
;
335 size
= sizeof (howto_table_std
) / sizeof (howto_table_std
[0]);
338 for (i
= 0; i
< size
; i
++)
339 if (howto_table
[i
].name
!= NULL
340 && strcasecmp (howto_table
[i
].name
, r_name
) == 0)
341 return &howto_table
[i
];
348 Internal entry points
351 @file{aoutx.h} exports several routines for accessing the
352 contents of an a.out file, which are gathered and exported in
353 turn by various format specific files (eg sunos.c).
358 aout_@var{size}_swap_exec_header_in
361 void aout_@var{size}_swap_exec_header_in,
363 struct external_exec *bytes,
364 struct internal_exec *execp);
367 Swap the information in an executable header @var{raw_bytes} taken
368 from a raw byte stream memory image into the internal exec header
369 structure @var{execp}.
372 #ifndef NAME_swap_exec_header_in
374 NAME (aout
, swap_exec_header_in
) (bfd
*abfd
,
375 struct external_exec
*bytes
,
376 struct internal_exec
*execp
)
378 /* The internal_exec structure has some fields that are unused in this
379 configuration (IE for i960), so ensure that all such uninitialized
380 fields are zero'd out. There are places where two of these structs
381 are memcmp'd, and thus the contents do matter. */
382 memset ((void *) execp
, 0, sizeof (struct internal_exec
));
383 /* Now fill in fields in the execp, from the bytes in the raw data. */
384 execp
->a_info
= H_GET_32 (abfd
, bytes
->e_info
);
385 execp
->a_text
= GET_WORD (abfd
, bytes
->e_text
);
386 execp
->a_data
= GET_WORD (abfd
, bytes
->e_data
);
387 execp
->a_bss
= GET_WORD (abfd
, bytes
->e_bss
);
388 execp
->a_syms
= GET_WORD (abfd
, bytes
->e_syms
);
389 execp
->a_entry
= GET_WORD (abfd
, bytes
->e_entry
);
390 execp
->a_trsize
= GET_WORD (abfd
, bytes
->e_trsize
);
391 execp
->a_drsize
= GET_WORD (abfd
, bytes
->e_drsize
);
393 #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
398 aout_@var{size}_swap_exec_header_out
401 void aout_@var{size}_swap_exec_header_out
403 struct internal_exec *execp,
404 struct external_exec *raw_bytes);
407 Swap the information in an internal exec header structure
408 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
411 NAME (aout
, swap_exec_header_out
) (bfd
*abfd
,
412 struct internal_exec
*execp
,
413 struct external_exec
*bytes
)
415 /* Now fill in fields in the raw data, from the fields in the exec struct. */
416 H_PUT_32 (abfd
, execp
->a_info
, bytes
->e_info
);
417 PUT_WORD (abfd
, execp
->a_text
, bytes
->e_text
);
418 PUT_WORD (abfd
, execp
->a_data
, bytes
->e_data
);
419 PUT_WORD (abfd
, execp
->a_bss
, bytes
->e_bss
);
420 PUT_WORD (abfd
, execp
->a_syms
, bytes
->e_syms
);
421 PUT_WORD (abfd
, execp
->a_entry
, bytes
->e_entry
);
422 PUT_WORD (abfd
, execp
->a_trsize
, bytes
->e_trsize
);
423 PUT_WORD (abfd
, execp
->a_drsize
, bytes
->e_drsize
);
426 /* Make all the section for an a.out file. */
429 NAME (aout
, make_sections
) (bfd
*abfd
)
431 if (obj_textsec (abfd
) == NULL
&& bfd_make_section (abfd
, ".text") == NULL
)
433 if (obj_datasec (abfd
) == NULL
&& bfd_make_section (abfd
, ".data") == NULL
)
435 if (obj_bsssec (abfd
) == NULL
&& bfd_make_section (abfd
, ".bss") == NULL
)
442 aout_@var{size}_some_aout_object_p
445 const bfd_target *aout_@var{size}_some_aout_object_p
447 struct internal_exec *execp,
448 const bfd_target *(*callback_to_real_object_p) (bfd *));
451 Some a.out variant thinks that the file open in @var{abfd}
452 checking is an a.out file. Do some more checking, and set up
453 for access if it really is. Call back to the calling
454 environment's "finish up" function just before returning, to
455 handle any last-minute setup.
459 NAME (aout
, some_aout_object_p
) (bfd
*abfd
,
460 struct internal_exec
*execp
,
461 const bfd_target
*(*callback_to_real_object_p
) (bfd
*))
463 struct aout_data_struct
*rawptr
, *oldrawptr
;
464 const bfd_target
*result
;
465 bfd_size_type amt
= sizeof (* rawptr
);
467 rawptr
= bfd_zalloc (abfd
, amt
);
471 oldrawptr
= abfd
->tdata
.aout_data
;
472 abfd
->tdata
.aout_data
= rawptr
;
474 /* Copy the contents of the old tdata struct.
475 In particular, we want the subformat, since for hpux it was set in
476 hp300hpux.c:swap_exec_header_in and will be used in
477 hp300hpux.c:callback. */
478 if (oldrawptr
!= NULL
)
479 *abfd
->tdata
.aout_data
= *oldrawptr
;
481 abfd
->tdata
.aout_data
->a
.hdr
= &rawptr
->e
;
482 /* Copy in the internal_exec struct. */
483 *(abfd
->tdata
.aout_data
->a
.hdr
) = *execp
;
484 execp
= abfd
->tdata
.aout_data
->a
.hdr
;
486 /* Set the file flags. */
487 abfd
->flags
= BFD_NO_FLAGS
;
488 if (execp
->a_drsize
|| execp
->a_trsize
)
489 abfd
->flags
|= HAS_RELOC
;
490 /* Setting of EXEC_P has been deferred to the bottom of this function. */
492 abfd
->flags
|= HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
;
493 if (N_DYNAMIC (*execp
))
494 abfd
->flags
|= DYNAMIC
;
496 if (N_MAGIC (*execp
) == ZMAGIC
)
498 abfd
->flags
|= D_PAGED
| WP_TEXT
;
499 adata (abfd
).magic
= z_magic
;
501 else if (N_MAGIC (*execp
) == QMAGIC
)
503 abfd
->flags
|= D_PAGED
| WP_TEXT
;
504 adata (abfd
).magic
= z_magic
;
505 adata (abfd
).subformat
= q_magic_format
;
507 else if (N_MAGIC (*execp
) == NMAGIC
)
509 abfd
->flags
|= WP_TEXT
;
510 adata (abfd
).magic
= n_magic
;
512 else if (N_MAGIC (*execp
) == OMAGIC
513 || N_MAGIC (*execp
) == BMAGIC
)
514 adata (abfd
).magic
= o_magic
;
516 /* Should have been checked with N_BADMAG before this routine
520 bfd_get_start_address (abfd
) = execp
->a_entry
;
522 obj_aout_symbols (abfd
) = NULL
;
523 bfd_get_symcount (abfd
) = execp
->a_syms
/ sizeof (struct external_nlist
);
525 /* The default relocation entry size is that of traditional V7 Unix. */
526 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
528 /* The default symbol entry size is that of traditional Unix. */
529 obj_symbol_entry_size (abfd
) = EXTERNAL_NLIST_SIZE
;
532 bfd_init_window (&obj_aout_sym_window (abfd
));
533 bfd_init_window (&obj_aout_string_window (abfd
));
535 obj_aout_external_syms (abfd
) = NULL
;
536 obj_aout_external_strings (abfd
) = NULL
;
537 obj_aout_sym_hashes (abfd
) = NULL
;
539 if (! NAME (aout
, make_sections
) (abfd
))
542 obj_datasec (abfd
)->size
= execp
->a_data
;
543 obj_bsssec (abfd
)->size
= execp
->a_bss
;
545 obj_textsec (abfd
)->flags
=
546 (execp
->a_trsize
!= 0
547 ? (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_RELOC
)
548 : (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
));
549 obj_datasec (abfd
)->flags
=
550 (execp
->a_drsize
!= 0
551 ? (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
| SEC_RELOC
)
552 : (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
));
553 obj_bsssec (abfd
)->flags
= SEC_ALLOC
;
555 #ifdef THIS_IS_ONLY_DOCUMENTATION
556 /* The common code can't fill in these things because they depend
557 on either the start address of the text segment, the rounding
558 up of virtual addresses between segments, or the starting file
559 position of the text segment -- all of which varies among different
560 versions of a.out. */
562 /* Call back to the format-dependent code to fill in the rest of the
563 fields and do any further cleanup. Things that should be filled
564 in by the callback: */
566 struct exec
*execp
= exec_hdr (abfd
);
568 obj_textsec (abfd
)->size
= N_TXTSIZE (*execp
);
569 /* Data and bss are already filled in since they're so standard. */
571 /* The virtual memory addresses of the sections. */
572 obj_textsec (abfd
)->vma
= N_TXTADDR (*execp
);
573 obj_datasec (abfd
)->vma
= N_DATADDR (*execp
);
574 obj_bsssec (abfd
)->vma
= N_BSSADDR (*execp
);
576 /* The file offsets of the sections. */
577 obj_textsec (abfd
)->filepos
= N_TXTOFF (*execp
);
578 obj_datasec (abfd
)->filepos
= N_DATOFF (*execp
);
580 /* The file offsets of the relocation info. */
581 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF (*execp
);
582 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF (*execp
);
584 /* The file offsets of the string table and symbol table. */
585 obj_str_filepos (abfd
) = N_STROFF (*execp
);
586 obj_sym_filepos (abfd
) = N_SYMOFF (*execp
);
588 /* Determine the architecture and machine type of the object file. */
589 switch (N_MACHTYPE (*exec_hdr (abfd
)))
592 abfd
->obj_arch
= bfd_arch_obscure
;
596 adata (abfd
)->page_size
= TARGET_PAGE_SIZE
;
597 adata (abfd
)->segment_size
= SEGMENT_SIZE
;
598 adata (abfd
)->exec_bytes_size
= EXEC_BYTES_SIZE
;
602 /* The architecture is encoded in various ways in various a.out variants,
603 or is not encoded at all in some of them. The relocation size depends
604 on the architecture and the a.out variant. Finally, the return value
605 is the bfd_target vector in use. If an error occurs, return zero and
606 set bfd_error to the appropriate error code.
608 Formats such as b.out, which have additional fields in the a.out
609 header, should cope with them in this callback as well. */
610 #endif /* DOCUMENTATION */
612 result
= (*callback_to_real_object_p
) (abfd
);
614 /* Now that the segment addresses have been worked out, take a better
615 guess at whether the file is executable. If the entry point
616 is within the text segment, assume it is. (This makes files
617 executable even if their entry point address is 0, as long as
618 their text starts at zero.).
620 This test had to be changed to deal with systems where the text segment
621 runs at a different location than the default. The problem is that the
622 entry address can appear to be outside the text segment, thus causing an
623 erroneous conclusion that the file isn't executable.
625 To fix this, we now accept any non-zero entry point as an indication of
626 executability. This will work most of the time, since only the linker
627 sets the entry point, and that is likely to be non-zero for most systems. */
629 if (execp
->a_entry
!= 0
630 || (execp
->a_entry
>= obj_textsec (abfd
)->vma
631 && execp
->a_entry
< (obj_textsec (abfd
)->vma
632 + obj_textsec (abfd
)->size
)))
633 abfd
->flags
|= EXEC_P
;
637 struct stat stat_buf
;
639 /* The original heuristic doesn't work in some important cases.
640 The a.out file has no information about the text start
641 address. For files (like kernels) linked to non-standard
642 addresses (ld -Ttext nnn) the entry point may not be between
643 the default text start (obj_textsec(abfd)->vma) and
644 (obj_textsec(abfd)->vma) + text size. This is not just a mach
645 issue. Many kernels are loaded at non standard addresses. */
646 if (abfd
->iostream
!= NULL
647 && (abfd
->flags
& BFD_IN_MEMORY
) == 0
648 && (fstat (fileno ((FILE *) (abfd
->iostream
)), &stat_buf
) == 0)
649 && ((stat_buf
.st_mode
& 0111) != 0))
650 abfd
->flags
|= EXEC_P
;
652 #endif /* STAT_FOR_EXEC */
658 bfd_release (abfd
, rawptr
);
659 abfd
->tdata
.aout_data
= oldrawptr
;
665 aout_@var{size}_mkobject
668 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
671 Initialize BFD @var{abfd} for use with a.out files.
675 NAME (aout
, mkobject
) (bfd
*abfd
)
677 struct aout_data_struct
*rawptr
;
678 bfd_size_type amt
= sizeof (* rawptr
);
680 bfd_set_error (bfd_error_system_call
);
682 rawptr
= bfd_zalloc (abfd
, amt
);
686 abfd
->tdata
.aout_data
= rawptr
;
687 exec_hdr (abfd
) = &(rawptr
->e
);
689 obj_textsec (abfd
) = NULL
;
690 obj_datasec (abfd
) = NULL
;
691 obj_bsssec (abfd
) = NULL
;
698 aout_@var{size}_machine_type
701 enum machine_type aout_@var{size}_machine_type
702 (enum bfd_architecture arch,
703 unsigned long machine,
704 bfd_boolean *unknown);
707 Keep track of machine architecture and machine type for
708 a.out's. Return the <<machine_type>> for a particular
709 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
710 and machine can't be represented in a.out format.
712 If the architecture is understood, machine type 0 (default)
713 is always understood.
717 NAME (aout
, machine_type
) (enum bfd_architecture arch
,
718 unsigned long machine
,
719 bfd_boolean
*unknown
)
721 enum machine_type arch_flags
;
723 arch_flags
= M_UNKNOWN
;
730 || machine
== bfd_mach_sparc
731 || machine
== bfd_mach_sparc_sparclite
732 || machine
== bfd_mach_sparc_sparclite_le
733 || machine
== bfd_mach_sparc_v8plus
734 || machine
== bfd_mach_sparc_v8plusa
735 || machine
== bfd_mach_sparc_v8plusb
736 || machine
== bfd_mach_sparc_v9
737 || machine
== bfd_mach_sparc_v9a
738 || machine
== bfd_mach_sparc_v9b
)
739 arch_flags
= M_SPARC
;
740 else if (machine
== bfd_mach_sparc_sparclet
)
741 arch_flags
= M_SPARCLET
;
747 case 0: arch_flags
= M_68010
; break;
748 case bfd_mach_m68000
: arch_flags
= M_UNKNOWN
; *unknown
= FALSE
; break;
749 case bfd_mach_m68010
: arch_flags
= M_68010
; break;
750 case bfd_mach_m68020
: arch_flags
= M_68020
; break;
751 default: arch_flags
= M_UNKNOWN
; break;
757 || machine
== bfd_mach_i386_i386
758 || machine
== bfd_mach_i386_i386_intel_syntax
)
771 case bfd_mach_mips3000
:
772 case bfd_mach_mips3900
:
773 arch_flags
= M_MIPS1
;
775 case bfd_mach_mips6000
:
776 arch_flags
= M_MIPS2
;
778 case bfd_mach_mips4000
:
779 case bfd_mach_mips4010
:
780 case bfd_mach_mips4100
:
781 case bfd_mach_mips4300
:
782 case bfd_mach_mips4400
:
783 case bfd_mach_mips4600
:
784 case bfd_mach_mips4650
:
785 case bfd_mach_mips8000
:
786 case bfd_mach_mips9000
:
787 case bfd_mach_mips10000
:
788 case bfd_mach_mips12000
:
789 case bfd_mach_mips16
:
790 case bfd_mach_mipsisa32
:
791 case bfd_mach_mipsisa32r2
:
793 case bfd_mach_mipsisa64
:
794 case bfd_mach_mipsisa64r2
:
795 case bfd_mach_mips_sb1
:
796 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
797 arch_flags
= M_MIPS2
;
800 arch_flags
= M_UNKNOWN
;
808 case 0: arch_flags
= M_NS32532
; break;
809 case 32032: arch_flags
= M_NS32032
; break;
810 case 32532: arch_flags
= M_NS32532
; break;
811 default: arch_flags
= M_UNKNOWN
; break;
820 if (machine
== 0 || machine
== 255)
829 arch_flags
= M_UNKNOWN
;
832 if (arch_flags
!= M_UNKNOWN
)
840 aout_@var{size}_set_arch_mach
843 bfd_boolean aout_@var{size}_set_arch_mach,
845 enum bfd_architecture arch,
846 unsigned long machine);
849 Set the architecture and the machine of the BFD @var{abfd} to the
850 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
851 can support the architecture required.
855 NAME (aout
, set_arch_mach
) (bfd
*abfd
,
856 enum bfd_architecture arch
,
857 unsigned long machine
)
859 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
862 if (arch
!= bfd_arch_unknown
)
866 NAME (aout
, machine_type
) (arch
, machine
, &unknown
);
871 /* Determine the size of a relocation entry. */
876 obj_reloc_entry_size (abfd
) = RELOC_EXT_SIZE
;
879 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
883 return (*aout_backend_info (abfd
)->set_sizes
) (abfd
);
887 adjust_o_magic (bfd
*abfd
, struct internal_exec
*execp
)
889 file_ptr pos
= adata (abfd
).exec_bytes_size
;
894 obj_textsec (abfd
)->filepos
= pos
;
895 if (!obj_textsec (abfd
)->user_set_vma
)
896 obj_textsec (abfd
)->vma
= vma
;
898 vma
= obj_textsec (abfd
)->vma
;
900 pos
+= obj_textsec (abfd
)->size
;
901 vma
+= obj_textsec (abfd
)->size
;
904 if (!obj_datasec (abfd
)->user_set_vma
)
906 obj_textsec (abfd
)->size
+= pad
;
909 obj_datasec (abfd
)->vma
= vma
;
912 vma
= obj_datasec (abfd
)->vma
;
913 obj_datasec (abfd
)->filepos
= pos
;
914 pos
+= obj_datasec (abfd
)->size
;
915 vma
+= obj_datasec (abfd
)->size
;
918 if (!obj_bsssec (abfd
)->user_set_vma
)
920 obj_datasec (abfd
)->size
+= pad
;
923 obj_bsssec (abfd
)->vma
= vma
;
927 /* The VMA of the .bss section is set by the VMA of the
928 .data section plus the size of the .data section. We may
929 need to add padding bytes to make this true. */
930 pad
= obj_bsssec (abfd
)->vma
- vma
;
933 obj_datasec (abfd
)->size
+= pad
;
937 obj_bsssec (abfd
)->filepos
= pos
;
939 /* Fix up the exec header. */
940 execp
->a_text
= obj_textsec (abfd
)->size
;
941 execp
->a_data
= obj_datasec (abfd
)->size
;
942 execp
->a_bss
= obj_bsssec (abfd
)->size
;
943 N_SET_MAGIC (*execp
, OMAGIC
);
947 adjust_z_magic (bfd
*abfd
, struct internal_exec
*execp
)
949 bfd_size_type data_pad
, text_pad
;
951 const struct aout_backend_data
*abdp
;
952 /* TRUE if text includes exec header. */
955 abdp
= aout_backend_info (abfd
);
959 && (abdp
->text_includes_header
960 || obj_aout_subformat (abfd
) == q_magic_format
));
961 obj_textsec (abfd
)->filepos
= (ztih
962 ? adata (abfd
).exec_bytes_size
963 : adata (abfd
).zmagic_disk_block_size
);
964 if (! obj_textsec (abfd
)->user_set_vma
)
966 /* ?? Do we really need to check for relocs here? */
967 obj_textsec (abfd
)->vma
= ((abfd
->flags
& HAS_RELOC
)
970 ? (abdp
->default_text_vma
971 + adata (abfd
).exec_bytes_size
)
972 : abdp
->default_text_vma
));
977 /* The .text section is being loaded at an unusual address. We
978 may need to pad it such that the .data section starts at a page
981 text_pad
= ((obj_textsec (abfd
)->filepos
- obj_textsec (abfd
)->vma
)
982 & (adata (abfd
).page_size
- 1));
984 text_pad
= ((- obj_textsec (abfd
)->vma
)
985 & (adata (abfd
).page_size
- 1));
988 /* Find start of data. */
991 text_end
= obj_textsec (abfd
)->filepos
+ obj_textsec (abfd
)->size
;
992 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
996 /* Note that if page_size == zmagic_disk_block_size, then
997 filepos == page_size, and this case is the same as the ztih
999 text_end
= obj_textsec (abfd
)->size
;
1000 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
1001 text_end
+= obj_textsec (abfd
)->filepos
;
1003 obj_textsec (abfd
)->size
+= text_pad
;
1004 text_end
+= text_pad
;
1007 if (!obj_datasec (abfd
)->user_set_vma
)
1010 vma
= obj_textsec (abfd
)->vma
+ obj_textsec (abfd
)->size
;
1011 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1013 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
1015 asection
* text
= obj_textsec (abfd
);
1016 asection
* data
= obj_datasec (abfd
);
1018 text_pad
= data
->vma
- (text
->vma
+ text
->size
);
1019 /* Only pad the text section if the data
1020 section is going to be placed after it. */
1022 text
->size
+= text_pad
;
1024 obj_datasec (abfd
)->filepos
= (obj_textsec (abfd
)->filepos
1025 + obj_textsec (abfd
)->size
);
1027 /* Fix up exec header while we're at it. */
1028 execp
->a_text
= obj_textsec (abfd
)->size
;
1029 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
1030 execp
->a_text
+= adata (abfd
).exec_bytes_size
;
1031 if (obj_aout_subformat (abfd
) == q_magic_format
)
1032 N_SET_MAGIC (*execp
, QMAGIC
);
1034 N_SET_MAGIC (*execp
, ZMAGIC
);
1036 /* Spec says data section should be rounded up to page boundary. */
1037 obj_datasec (abfd
)->size
1038 = align_power (obj_datasec (abfd
)->size
,
1039 obj_bsssec (abfd
)->alignment_power
);
1040 execp
->a_data
= BFD_ALIGN (obj_datasec (abfd
)->size
,
1041 adata (abfd
).page_size
);
1042 data_pad
= execp
->a_data
- obj_datasec (abfd
)->size
;
1045 if (!obj_bsssec (abfd
)->user_set_vma
)
1046 obj_bsssec (abfd
)->vma
= (obj_datasec (abfd
)->vma
1047 + obj_datasec (abfd
)->size
);
1048 /* If the BSS immediately follows the data section and extra space
1049 in the page is left after the data section, fudge data
1050 in the header so that the bss section looks smaller by that
1051 amount. We'll start the bss section there, and lie to the OS.
1052 (Note that a linker script, as well as the above assignment,
1053 could have explicitly set the BSS vma to immediately follow
1054 the data section.) */
1055 if (align_power (obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->alignment_power
)
1056 == obj_datasec (abfd
)->vma
+ obj_datasec (abfd
)->size
)
1057 execp
->a_bss
= (data_pad
> obj_bsssec (abfd
)->size
1058 ? 0 : obj_bsssec (abfd
)->size
- data_pad
);
1060 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1064 adjust_n_magic (bfd
*abfd
, struct internal_exec
*execp
)
1066 file_ptr pos
= adata (abfd
).exec_bytes_size
;
1071 obj_textsec (abfd
)->filepos
= pos
;
1072 if (!obj_textsec (abfd
)->user_set_vma
)
1073 obj_textsec (abfd
)->vma
= vma
;
1075 vma
= obj_textsec (abfd
)->vma
;
1076 pos
+= obj_textsec (abfd
)->size
;
1077 vma
+= obj_textsec (abfd
)->size
;
1080 obj_datasec (abfd
)->filepos
= pos
;
1081 if (!obj_datasec (abfd
)->user_set_vma
)
1082 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1083 vma
= obj_datasec (abfd
)->vma
;
1085 /* Since BSS follows data immediately, see if it needs alignment. */
1086 vma
+= obj_datasec (abfd
)->size
;
1087 pad
= align_power (vma
, obj_bsssec (abfd
)->alignment_power
) - vma
;
1088 obj_datasec (abfd
)->size
+= pad
;
1089 pos
+= obj_datasec (abfd
)->size
;
1092 if (!obj_bsssec (abfd
)->user_set_vma
)
1093 obj_bsssec (abfd
)->vma
= vma
;
1095 vma
= obj_bsssec (abfd
)->vma
;
1097 /* Fix up exec header. */
1098 execp
->a_text
= obj_textsec (abfd
)->size
;
1099 execp
->a_data
= obj_datasec (abfd
)->size
;
1100 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1101 N_SET_MAGIC (*execp
, NMAGIC
);
1105 NAME (aout
, adjust_sizes_and_vmas
) (bfd
*abfd
,
1106 bfd_size_type
*text_size
,
1107 file_ptr
*text_end ATTRIBUTE_UNUSED
)
1109 struct internal_exec
*execp
= exec_hdr (abfd
);
1111 if (! NAME (aout
, make_sections
) (abfd
))
1114 if (adata (abfd
).magic
!= undecided_magic
)
1117 obj_textsec (abfd
)->size
=
1118 align_power (obj_textsec (abfd
)->size
,
1119 obj_textsec (abfd
)->alignment_power
);
1121 *text_size
= obj_textsec (abfd
)->size
;
1122 /* Rule (heuristic) for when to pad to a new page. Note that there
1123 are (at least) two ways demand-paged (ZMAGIC) files have been
1124 handled. Most Berkeley-based systems start the text segment at
1125 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1126 segment right after the exec header; the latter is counted in the
1127 text segment size, and is paged in by the kernel with the rest of
1130 /* This perhaps isn't the right way to do this, but made it simpler for me
1131 to understand enough to implement it. Better would probably be to go
1132 right from BFD flags to alignment/positioning characteristics. But the
1133 old code was sloppy enough about handling the flags, and had enough
1134 other magic, that it was a little hard for me to understand. I think
1135 I understand it better now, but I haven't time to do the cleanup this
1138 if (abfd
->flags
& D_PAGED
)
1139 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1140 adata (abfd
).magic
= z_magic
;
1141 else if (abfd
->flags
& WP_TEXT
)
1142 adata (abfd
).magic
= n_magic
;
1144 adata (abfd
).magic
= o_magic
;
1146 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1148 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1150 switch (adata (abfd
).magic
)
1152 case n_magic
: str
= "NMAGIC"; break;
1153 case o_magic
: str
= "OMAGIC"; break;
1154 case z_magic
: str
= "ZMAGIC"; break;
1159 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1160 obj_textsec (abfd
)->alignment_power
,
1161 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1162 obj_datasec (abfd
)->alignment_power
,
1163 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
,
1164 obj_bsssec (abfd
)->alignment_power
);
1168 switch (adata (abfd
).magic
)
1171 adjust_o_magic (abfd
, execp
);
1174 adjust_z_magic (abfd
, execp
);
1177 adjust_n_magic (abfd
, execp
);
1183 #ifdef BFD_AOUT_DEBUG
1184 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1185 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1186 obj_textsec (abfd
)->filepos
,
1187 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1188 obj_datasec (abfd
)->filepos
,
1189 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
);
1197 aout_@var{size}_new_section_hook
1200 bfd_boolean aout_@var{size}_new_section_hook,
1205 Called by the BFD in response to a @code{bfd_make_section}
1209 NAME (aout
, new_section_hook
) (bfd
*abfd
, asection
*newsect
)
1211 /* Align to double at least. */
1212 newsect
->alignment_power
= bfd_get_arch_info (abfd
)->section_align_power
;
1214 if (bfd_get_format (abfd
) == bfd_object
)
1216 if (obj_textsec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".text"))
1218 obj_textsec (abfd
)= newsect
;
1219 newsect
->target_index
= N_TEXT
;
1221 else if (obj_datasec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".data"))
1223 obj_datasec (abfd
) = newsect
;
1224 newsect
->target_index
= N_DATA
;
1226 else if (obj_bsssec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".bss"))
1228 obj_bsssec (abfd
) = newsect
;
1229 newsect
->target_index
= N_BSS
;
1233 /* We allow more than three sections internally. */
1234 return _bfd_generic_new_section_hook (abfd
, newsect
);
1238 NAME (aout
, set_section_contents
) (bfd
*abfd
,
1240 const void * location
,
1242 bfd_size_type count
)
1245 bfd_size_type text_size
;
1247 if (! abfd
->output_has_begun
)
1249 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
1253 if (section
== obj_bsssec (abfd
))
1255 bfd_set_error (bfd_error_no_contents
);
1259 if (section
!= obj_textsec (abfd
)
1260 && section
!= obj_datasec (abfd
))
1262 if (aout_section_merge_with_text_p (abfd
, section
))
1263 section
->filepos
= obj_textsec (abfd
)->filepos
+
1264 (section
->vma
- obj_textsec (abfd
)->vma
);
1267 (*_bfd_error_handler
)
1268 (_("%s: can not represent section `%s' in a.out object file format"),
1269 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, section
));
1270 bfd_set_error (bfd_error_nonrepresentable_section
);
1277 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1278 || bfd_bwrite (location
, count
, abfd
) != count
)
1285 /* Read the external symbols from an a.out file. */
1288 aout_get_external_symbols (bfd
*abfd
)
1290 if (obj_aout_external_syms (abfd
) == NULL
)
1292 bfd_size_type count
;
1293 struct external_nlist
*syms
;
1296 count
= exec_hdr (abfd
)->a_syms
/ EXTERNAL_NLIST_SIZE
;
1299 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
),
1300 exec_hdr (abfd
)->a_syms
,
1301 &obj_aout_sym_window (abfd
), TRUE
))
1303 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1305 /* We allocate using malloc to make the values easy to free
1306 later on. If we put them on the objalloc it might not be
1307 possible to free them. */
1308 syms
= bfd_malloc (count
* EXTERNAL_NLIST_SIZE
);
1309 if (syms
== NULL
&& count
!= 0)
1312 amt
= exec_hdr (abfd
)->a_syms
;
1313 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1314 || bfd_bread (syms
, amt
, abfd
) != amt
)
1321 obj_aout_external_syms (abfd
) = syms
;
1322 obj_aout_external_sym_count (abfd
) = count
;
1325 if (obj_aout_external_strings (abfd
) == NULL
1326 && exec_hdr (abfd
)->a_syms
!= 0)
1328 unsigned char string_chars
[BYTES_IN_WORD
];
1329 bfd_size_type stringsize
;
1331 bfd_size_type amt
= BYTES_IN_WORD
;
1333 /* Get the size of the strings. */
1334 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1335 || bfd_bread ((void *) string_chars
, amt
, abfd
) != amt
)
1337 stringsize
= GET_WORD (abfd
, string_chars
);
1340 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
,
1341 &obj_aout_string_window (abfd
), TRUE
))
1343 strings
= (char *) obj_aout_string_window (abfd
).data
;
1345 strings
= bfd_malloc (stringsize
+ 1);
1346 if (strings
== NULL
)
1349 /* Skip space for the string count in the buffer for convenience
1350 when using indexes. */
1351 amt
= stringsize
- BYTES_IN_WORD
;
1352 if (bfd_bread (strings
+ BYTES_IN_WORD
, amt
, abfd
) != amt
)
1359 /* Ensure that a zero index yields an empty string. */
1362 strings
[stringsize
- 1] = 0;
1364 obj_aout_external_strings (abfd
) = strings
;
1365 obj_aout_external_string_size (abfd
) = stringsize
;
1371 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1372 and symbol->value fields of CACHE_PTR will be set from the a.out
1373 nlist structure. This function is responsible for setting
1374 symbol->flags and symbol->section, and adjusting symbol->value. */
1377 translate_from_native_sym_flags (bfd
*abfd
, aout_symbol_type
*cache_ptr
)
1381 if ((cache_ptr
->type
& N_STAB
) != 0
1382 || cache_ptr
->type
== N_FN
)
1386 /* This is a debugging symbol. */
1387 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1389 /* Work out the symbol section. */
1390 switch (cache_ptr
->type
& N_TYPE
)
1394 sec
= obj_textsec (abfd
);
1397 sec
= obj_datasec (abfd
);
1400 sec
= obj_bsssec (abfd
);
1404 sec
= bfd_abs_section_ptr
;
1408 cache_ptr
->symbol
.section
= sec
;
1409 cache_ptr
->symbol
.value
-= sec
->vma
;
1414 /* Get the default visibility. This does not apply to all types, so
1415 we just hold it in a local variable to use if wanted. */
1416 if ((cache_ptr
->type
& N_EXT
) == 0)
1417 visible
= BSF_LOCAL
;
1419 visible
= BSF_GLOBAL
;
1421 switch (cache_ptr
->type
)
1424 case N_ABS
: case N_ABS
| N_EXT
:
1425 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1426 cache_ptr
->symbol
.flags
= visible
;
1429 case N_UNDF
| N_EXT
:
1430 if (cache_ptr
->symbol
.value
!= 0)
1432 /* This is a common symbol. */
1433 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1434 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1438 cache_ptr
->symbol
.flags
= 0;
1439 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1443 case N_TEXT
: case N_TEXT
| N_EXT
:
1444 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1445 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1446 cache_ptr
->symbol
.flags
= visible
;
1449 /* N_SETV symbols used to represent set vectors placed in the
1450 data section. They are no longer generated. Theoretically,
1451 it was possible to extract the entries and combine them with
1452 new ones, although I don't know if that was ever actually
1453 done. Unless that feature is restored, treat them as data
1455 case N_SETV
: case N_SETV
| N_EXT
:
1456 case N_DATA
: case N_DATA
| N_EXT
:
1457 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1458 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1459 cache_ptr
->symbol
.flags
= visible
;
1462 case N_BSS
: case N_BSS
| N_EXT
:
1463 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1464 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1465 cache_ptr
->symbol
.flags
= visible
;
1468 case N_SETA
: case N_SETA
| N_EXT
:
1469 case N_SETT
: case N_SETT
| N_EXT
:
1470 case N_SETD
: case N_SETD
| N_EXT
:
1471 case N_SETB
: case N_SETB
| N_EXT
:
1473 /* This code is no longer needed. It used to be used to make
1474 the linker handle set symbols, but they are now handled in
1475 the add_symbols routine instead. */
1476 switch (cache_ptr
->type
& N_TYPE
)
1479 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1482 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1485 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1488 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1492 cache_ptr
->symbol
.flags
|= BSF_CONSTRUCTOR
;
1497 /* This symbol is the text of a warning message. The next
1498 symbol is the symbol to associate the warning with. If a
1499 reference is made to that symbol, a warning is issued. */
1500 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_WARNING
;
1501 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1504 case N_INDR
: case N_INDR
| N_EXT
:
1505 /* An indirect symbol. This consists of two symbols in a row.
1506 The first symbol is the name of the indirection. The second
1507 symbol is the name of the target. A reference to the first
1508 symbol becomes a reference to the second. */
1509 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_INDIRECT
| visible
;
1510 cache_ptr
->symbol
.section
= bfd_ind_section_ptr
;
1514 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1515 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1519 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1520 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1524 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1525 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1526 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1530 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1531 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1532 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1536 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1537 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1538 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1545 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1548 translate_to_native_sym_flags (bfd
*abfd
,
1550 struct external_nlist
*sym_pointer
)
1552 bfd_vma value
= cache_ptr
->value
;
1556 /* Mask out any existing type bits in case copying from one section
1558 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1560 sec
= bfd_get_section (cache_ptr
);
1565 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1567 (*_bfd_error_handler
)
1568 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
1569 bfd_get_filename (abfd
),
1570 cache_ptr
->name
!= NULL
? cache_ptr
->name
: _("*unknown*"));
1571 bfd_set_error (bfd_error_nonrepresentable_section
);
1575 if (sec
->output_section
!= NULL
)
1577 off
= sec
->output_offset
;
1578 sec
= sec
->output_section
;
1581 if (bfd_is_abs_section (sec
))
1582 sym_pointer
->e_type
[0] |= N_ABS
;
1583 else if (sec
== obj_textsec (abfd
))
1584 sym_pointer
->e_type
[0] |= N_TEXT
;
1585 else if (sec
== obj_datasec (abfd
))
1586 sym_pointer
->e_type
[0] |= N_DATA
;
1587 else if (sec
== obj_bsssec (abfd
))
1588 sym_pointer
->e_type
[0] |= N_BSS
;
1589 else if (bfd_is_und_section (sec
))
1590 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1591 else if (bfd_is_ind_section (sec
))
1592 sym_pointer
->e_type
[0] = N_INDR
;
1593 else if (bfd_is_com_section (sec
))
1594 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1597 if (aout_section_merge_with_text_p (abfd
, sec
))
1598 sym_pointer
->e_type
[0] |= N_TEXT
;
1601 (*_bfd_error_handler
)
1602 (_("%s: can not represent section `%s' in a.out object file format"),
1603 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, sec
));
1604 bfd_set_error (bfd_error_nonrepresentable_section
);
1609 /* Turn the symbol from section relative to absolute again. */
1610 value
+= sec
->vma
+ off
;
1612 if ((cache_ptr
->flags
& BSF_WARNING
) != 0)
1613 sym_pointer
->e_type
[0] = N_WARNING
;
1615 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1616 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1617 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1618 sym_pointer
->e_type
[0] |= N_EXT
;
1619 else if ((cache_ptr
->flags
& BSF_LOCAL
) != 0)
1620 sym_pointer
->e_type
[0] &= ~N_EXT
;
1622 if ((cache_ptr
->flags
& BSF_CONSTRUCTOR
) != 0)
1624 int type
= ((aout_symbol_type
*) cache_ptr
)->type
;
1628 case N_ABS
: type
= N_SETA
; break;
1629 case N_TEXT
: type
= N_SETT
; break;
1630 case N_DATA
: type
= N_SETD
; break;
1631 case N_BSS
: type
= N_SETB
; break;
1633 sym_pointer
->e_type
[0] = type
;
1636 if ((cache_ptr
->flags
& BSF_WEAK
) != 0)
1640 switch (sym_pointer
->e_type
[0] & N_TYPE
)
1643 case N_ABS
: type
= N_WEAKA
; break;
1644 case N_TEXT
: type
= N_WEAKT
; break;
1645 case N_DATA
: type
= N_WEAKD
; break;
1646 case N_BSS
: type
= N_WEAKB
; break;
1647 case N_UNDF
: type
= N_WEAKU
; break;
1649 sym_pointer
->e_type
[0] = type
;
1652 PUT_WORD (abfd
, value
, sym_pointer
->e_value
);
1657 /* Native-level interface to symbols. */
1660 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1662 bfd_size_type amt
= sizeof (aout_symbol_type
);
1664 aout_symbol_type
*new = bfd_zalloc (abfd
, amt
);
1667 new->symbol
.the_bfd
= abfd
;
1669 return &new->symbol
;
1672 /* Translate a set of internal symbols into external symbols. */
1675 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1676 aout_symbol_type
*in
,
1677 struct external_nlist
*ext
,
1678 bfd_size_type count
,
1680 bfd_size_type strsize
,
1681 bfd_boolean dynamic
)
1683 struct external_nlist
*ext_end
;
1685 ext_end
= ext
+ count
;
1686 for (; ext
< ext_end
; ext
++, in
++)
1690 x
= GET_WORD (abfd
, ext
->e_strx
);
1691 in
->symbol
.the_bfd
= abfd
;
1693 /* For the normal symbols, the zero index points at the number
1694 of bytes in the string table but is to be interpreted as the
1695 null string. For the dynamic symbols, the number of bytes in
1696 the string table is stored in the __DYNAMIC structure and the
1697 zero index points at an actual string. */
1698 if (x
== 0 && ! dynamic
)
1699 in
->symbol
.name
= "";
1700 else if (x
< strsize
)
1701 in
->symbol
.name
= str
+ x
;
1705 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1706 in
->desc
= H_GET_16 (abfd
, ext
->e_desc
);
1707 in
->other
= H_GET_8 (abfd
, ext
->e_other
);
1708 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1709 in
->symbol
.udata
.p
= NULL
;
1711 if (! translate_from_native_sym_flags (abfd
, in
))
1715 in
->symbol
.flags
|= BSF_DYNAMIC
;
1721 /* We read the symbols into a buffer, which is discarded when this
1722 function exits. We read the strings into a buffer large enough to
1723 hold them all plus all the cached symbol entries. */
1726 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1728 struct external_nlist
*old_external_syms
;
1729 aout_symbol_type
*cached
;
1730 bfd_size_type cached_size
;
1732 /* If there's no work to be done, don't do any. */
1733 if (obj_aout_symbols (abfd
) != NULL
)
1736 old_external_syms
= obj_aout_external_syms (abfd
);
1738 if (! aout_get_external_symbols (abfd
))
1741 cached_size
= obj_aout_external_sym_count (abfd
);
1742 cached_size
*= sizeof (aout_symbol_type
);
1743 cached
= bfd_zmalloc (cached_size
);
1744 if (cached
== NULL
&& cached_size
!= 0)
1747 /* Convert from external symbol information to internal. */
1748 if (! (NAME (aout
, translate_symbol_table
)
1750 obj_aout_external_syms (abfd
),
1751 obj_aout_external_sym_count (abfd
),
1752 obj_aout_external_strings (abfd
),
1753 obj_aout_external_string_size (abfd
),
1760 bfd_get_symcount (abfd
) = obj_aout_external_sym_count (abfd
);
1762 obj_aout_symbols (abfd
) = cached
;
1764 /* It is very likely that anybody who calls this function will not
1765 want the external symbol information, so if it was allocated
1766 because of our call to aout_get_external_symbols, we free it up
1767 right away to save space. */
1768 if (old_external_syms
== NULL
1769 && obj_aout_external_syms (abfd
) != NULL
)
1772 bfd_free_window (&obj_aout_sym_window (abfd
));
1774 free (obj_aout_external_syms (abfd
));
1776 obj_aout_external_syms (abfd
) = NULL
;
1782 /* We use a hash table when writing out symbols so that we only write
1783 out a particular string once. This helps particularly when the
1784 linker writes out stabs debugging entries, because each different
1785 contributing object file tends to have many duplicate stabs
1788 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1789 if BFD_TRADITIONAL_FORMAT is set. */
1791 /* Get the index of a string in a strtab, adding it if it is not
1794 static inline bfd_size_type
1795 add_to_stringtab (bfd
*abfd
,
1796 struct bfd_strtab_hash
*tab
,
1801 bfd_size_type index
;
1803 /* An index of 0 always means the empty string. */
1804 if (str
== 0 || *str
== '\0')
1807 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1808 doesn't understand a hashed string table. */
1810 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1813 index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1815 if (index
!= (bfd_size_type
) -1)
1816 /* Add BYTES_IN_WORD to the return value to account for the
1817 space taken up by the string table size. */
1818 index
+= BYTES_IN_WORD
;
1823 /* Write out a strtab. ABFD is already at the right location in the
1827 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1829 bfd_byte buffer
[BYTES_IN_WORD
];
1830 bfd_size_type amt
= BYTES_IN_WORD
;
1832 /* The string table starts with the size. */
1833 PUT_WORD (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_WORD
, buffer
);
1834 if (bfd_bwrite ((void *) buffer
, amt
, abfd
) != amt
)
1837 return _bfd_stringtab_emit (abfd
, tab
);
1841 NAME (aout
, write_syms
) (bfd
*abfd
)
1843 unsigned int count
;
1844 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1845 struct bfd_strtab_hash
*strtab
;
1847 strtab
= _bfd_stringtab_init ();
1851 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1853 asymbol
*g
= generic
[count
];
1855 struct external_nlist nsp
;
1858 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1859 if (indx
== (bfd_size_type
) -1)
1861 PUT_WORD (abfd
, indx
, (bfd_byte
*) nsp
.e_strx
);
1863 if (bfd_asymbol_flavour (g
) == abfd
->xvec
->flavour
)
1865 H_PUT_16 (abfd
, aout_symbol (g
)->desc
, nsp
.e_desc
);
1866 H_PUT_8 (abfd
, aout_symbol (g
)->other
, nsp
.e_other
);
1867 H_PUT_8 (abfd
, aout_symbol (g
)->type
, nsp
.e_type
);
1871 H_PUT_16 (abfd
, 0, nsp
.e_desc
);
1872 H_PUT_8 (abfd
, 0, nsp
.e_other
);
1873 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1876 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1879 amt
= EXTERNAL_NLIST_SIZE
;
1880 if (bfd_bwrite ((void *) &nsp
, amt
, abfd
) != amt
)
1883 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1884 here, at the end. */
1888 if (! emit_stringtab (abfd
, strtab
))
1891 _bfd_stringtab_free (strtab
);
1896 _bfd_stringtab_free (strtab
);
1901 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1903 unsigned int counter
= 0;
1904 aout_symbol_type
*symbase
;
1906 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1909 for (symbase
= obj_aout_symbols (abfd
);
1910 counter
++ < bfd_get_symcount (abfd
);
1912 *(location
++) = (asymbol
*) (symbase
++);
1914 return bfd_get_symcount (abfd
);
1917 /* Standard reloc stuff. */
1918 /* Output standard relocation information to a file in target byte order. */
1920 extern void NAME (aout
, swap_std_reloc_out
)
1921 (bfd
*, arelent
*, struct reloc_std_external
*);
1924 NAME (aout
, swap_std_reloc_out
) (bfd
*abfd
,
1926 struct reloc_std_external
*natptr
)
1929 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1931 unsigned int r_length
;
1933 int r_baserel
, r_jmptable
, r_relative
;
1934 asection
*output_section
= sym
->section
->output_section
;
1936 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
1938 r_length
= g
->howto
->size
; /* Size as a power of two. */
1939 r_pcrel
= (int) g
->howto
->pc_relative
; /* Relative to PC? */
1940 /* XXX This relies on relocs coming from a.out files. */
1941 r_baserel
= (g
->howto
->type
& 8) != 0;
1942 r_jmptable
= (g
->howto
->type
& 16) != 0;
1943 r_relative
= (g
->howto
->type
& 32) != 0;
1945 /* Name was clobbered by aout_write_syms to be symbol index. */
1947 /* If this relocation is relative to a symbol then set the
1948 r_index to the symbols index, and the r_extern bit.
1950 Absolute symbols can come in in two ways, either as an offset
1951 from the abs section, or as a symbol which has an abs value.
1952 check for that here. */
1954 if (bfd_is_com_section (output_section
)
1955 || bfd_is_abs_section (output_section
)
1956 || bfd_is_und_section (output_section
)
1957 /* PR gas/3041 a.out relocs against weak symbols
1958 must be treated as if they were against externs. */
1959 || (sym
->flags
& BSF_WEAK
))
1961 if (bfd_abs_section_ptr
->symbol
== sym
)
1963 /* Whoops, looked like an abs symbol, but is
1964 really an offset from the abs section. */
1970 /* Fill in symbol. */
1972 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
1977 /* Just an ordinary section. */
1979 r_index
= output_section
->target_index
;
1982 /* Now the fun stuff. */
1983 if (bfd_header_big_endian (abfd
))
1985 natptr
->r_index
[0] = r_index
>> 16;
1986 natptr
->r_index
[1] = r_index
>> 8;
1987 natptr
->r_index
[2] = r_index
;
1988 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
1989 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
1990 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
1991 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
1992 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
1993 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
1997 natptr
->r_index
[2] = r_index
>> 16;
1998 natptr
->r_index
[1] = r_index
>> 8;
1999 natptr
->r_index
[0] = r_index
;
2000 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
2001 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
2002 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
2003 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
2004 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
2005 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
2009 /* Extended stuff. */
2010 /* Output extended relocation information to a file in target byte order. */
2012 extern void NAME (aout
, swap_ext_reloc_out
)
2013 (bfd
*, arelent
*, struct reloc_ext_external
*);
2016 NAME (aout
, swap_ext_reloc_out
) (bfd
*abfd
,
2018 struct reloc_ext_external
*natptr
)
2022 unsigned int r_type
;
2024 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2025 asection
*output_section
= sym
->section
->output_section
;
2027 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
2029 r_type
= (unsigned int) g
->howto
->type
;
2031 r_addend
= g
->addend
;
2032 if ((sym
->flags
& BSF_SECTION_SYM
) != 0)
2033 r_addend
+= (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2035 /* If this relocation is relative to a symbol then set the
2036 r_index to the symbols index, and the r_extern bit.
2038 Absolute symbols can come in in two ways, either as an offset
2039 from the abs section, or as a symbol which has an abs value.
2040 check for that here. */
2041 if (bfd_is_abs_section (bfd_get_section (sym
)))
2046 else if ((sym
->flags
& BSF_SECTION_SYM
) == 0)
2048 if (bfd_is_und_section (bfd_get_section (sym
))
2049 || (sym
->flags
& BSF_GLOBAL
) != 0)
2053 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2057 /* Just an ordinary section. */
2059 r_index
= output_section
->target_index
;
2062 /* Now the fun stuff. */
2063 if (bfd_header_big_endian (abfd
))
2065 natptr
->r_index
[0] = r_index
>> 16;
2066 natptr
->r_index
[1] = r_index
>> 8;
2067 natptr
->r_index
[2] = r_index
;
2068 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
2069 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
2073 natptr
->r_index
[2] = r_index
>> 16;
2074 natptr
->r_index
[1] = r_index
>> 8;
2075 natptr
->r_index
[0] = r_index
;
2076 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
2077 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
));
2080 PUT_WORD (abfd
, r_addend
, natptr
->r_addend
);
2083 /* BFD deals internally with all things based from the section they're
2084 in. so, something in 10 bytes into a text section with a base of
2085 50 would have a symbol (.text+10) and know .text vma was 50.
2087 Aout keeps all it's symbols based from zero, so the symbol would
2088 contain 60. This macro subs the base of each section from the value
2089 to give the true offset from the section. */
2091 #define MOVE_ADDRESS(ad) \
2094 /* Undefined symbol. */ \
2095 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2096 cache_ptr->addend = ad; \
2100 /* Defined, section relative. Replace symbol with pointer to \
2101 symbol which points to section. */ \
2105 case N_TEXT | N_EXT: \
2106 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2107 cache_ptr->addend = ad - su->textsec->vma; \
2110 case N_DATA | N_EXT: \
2111 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2112 cache_ptr->addend = ad - su->datasec->vma; \
2115 case N_BSS | N_EXT: \
2116 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2117 cache_ptr->addend = ad - su->bsssec->vma; \
2121 case N_ABS | N_EXT: \
2122 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2123 cache_ptr->addend = ad; \
2129 NAME (aout
, swap_ext_reloc_in
) (bfd
*abfd
,
2130 struct reloc_ext_external
*bytes
,
2133 bfd_size_type symcount
)
2135 unsigned int r_index
;
2137 unsigned int r_type
;
2138 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2140 cache_ptr
->address
= (GET_SWORD (abfd
, bytes
->r_address
));
2142 /* Now the fun stuff. */
2143 if (bfd_header_big_endian (abfd
))
2145 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2146 | ((unsigned int) bytes
->r_index
[1] << 8)
2147 | bytes
->r_index
[2]);
2148 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
2149 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
2150 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
2154 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2155 | ((unsigned int) bytes
->r_index
[1] << 8)
2156 | bytes
->r_index
[0]);
2157 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
2158 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
2159 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
2162 cache_ptr
->howto
= howto_table_ext
+ r_type
;
2164 /* Base relative relocs are always against the symbol table,
2165 regardless of the setting of r_extern. r_extern just reflects
2166 whether the symbol the reloc is against is local or global. */
2167 if (r_type
== (unsigned int) RELOC_BASE10
2168 || r_type
== (unsigned int) RELOC_BASE13
2169 || r_type
== (unsigned int) RELOC_BASE22
)
2172 if (r_extern
&& r_index
> symcount
)
2174 /* We could arrange to return an error, but it might be useful
2175 to see the file even if it is bad. */
2180 MOVE_ADDRESS (GET_SWORD (abfd
, bytes
->r_addend
));
2184 NAME (aout
, swap_std_reloc_in
) (bfd
*abfd
,
2185 struct reloc_std_external
*bytes
,
2188 bfd_size_type symcount
)
2190 unsigned int r_index
;
2192 unsigned int r_length
;
2194 int r_baserel
, r_jmptable
, r_relative
;
2195 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2196 unsigned int howto_idx
;
2198 cache_ptr
->address
= H_GET_32 (abfd
, bytes
->r_address
);
2200 /* Now the fun stuff. */
2201 if (bfd_header_big_endian (abfd
))
2203 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2204 | ((unsigned int) bytes
->r_index
[1] << 8)
2205 | bytes
->r_index
[2]);
2206 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
2207 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
2208 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
2209 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
2210 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
2211 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
2212 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
2216 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2217 | ((unsigned int) bytes
->r_index
[1] << 8)
2218 | bytes
->r_index
[0]);
2219 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
2220 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
2221 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_LITTLE
));
2222 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_LITTLE
));
2223 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_LITTLE
));
2224 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
2225 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
2228 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
2229 + 16 * r_jmptable
+ 32 * r_relative
);
2230 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_std
));
2231 cache_ptr
->howto
= howto_table_std
+ howto_idx
;
2232 BFD_ASSERT (cache_ptr
->howto
->type
!= (unsigned int) -1);
2234 /* Base relative relocs are always against the symbol table,
2235 regardless of the setting of r_extern. r_extern just reflects
2236 whether the symbol the reloc is against is local or global. */
2240 if (r_extern
&& r_index
> symcount
)
2242 /* We could arrange to return an error, but it might be useful
2243 to see the file even if it is bad. */
2251 /* Read and swap the relocs for a section. */
2254 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
2256 bfd_size_type count
;
2257 bfd_size_type reloc_size
;
2259 arelent
*reloc_cache
;
2261 unsigned int counter
= 0;
2265 if (asect
->relocation
)
2268 if (asect
->flags
& SEC_CONSTRUCTOR
)
2271 if (asect
== obj_datasec (abfd
))
2272 reloc_size
= exec_hdr (abfd
)->a_drsize
;
2273 else if (asect
== obj_textsec (abfd
))
2274 reloc_size
= exec_hdr (abfd
)->a_trsize
;
2275 else if (asect
== obj_bsssec (abfd
))
2279 bfd_set_error (bfd_error_invalid_operation
);
2283 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
2286 each_size
= obj_reloc_entry_size (abfd
);
2288 count
= reloc_size
/ each_size
;
2290 amt
= count
* sizeof (arelent
);
2291 reloc_cache
= bfd_zmalloc (amt
);
2292 if (reloc_cache
== NULL
&& count
!= 0)
2295 relocs
= bfd_malloc (reloc_size
);
2296 if (relocs
== NULL
&& reloc_size
!= 0)
2302 if (bfd_bread (relocs
, reloc_size
, abfd
) != reloc_size
)
2309 cache_ptr
= reloc_cache
;
2310 if (each_size
== RELOC_EXT_SIZE
)
2312 struct reloc_ext_external
*rptr
= (struct reloc_ext_external
*) relocs
;
2314 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2315 MY_swap_ext_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2316 (bfd_size_type
) bfd_get_symcount (abfd
));
2320 struct reloc_std_external
*rptr
= (struct reloc_std_external
*) relocs
;
2322 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2323 MY_swap_std_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2324 (bfd_size_type
) bfd_get_symcount (abfd
));
2329 asect
->relocation
= reloc_cache
;
2330 asect
->reloc_count
= cache_ptr
- reloc_cache
;
2335 /* Write out a relocation section into an object file. */
2338 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
2341 unsigned char *native
, *natptr
;
2344 unsigned int count
= section
->reloc_count
;
2345 bfd_size_type natsize
;
2347 if (count
== 0 || section
->orelocation
== NULL
)
2350 each_size
= obj_reloc_entry_size (abfd
);
2351 natsize
= (bfd_size_type
) each_size
* count
;
2352 native
= bfd_zalloc (abfd
, natsize
);
2356 generic
= section
->orelocation
;
2358 if (each_size
== RELOC_EXT_SIZE
)
2360 for (natptr
= native
;
2362 --count
, natptr
+= each_size
, ++generic
)
2363 MY_swap_ext_reloc_out (abfd
, *generic
,
2364 (struct reloc_ext_external
*) natptr
);
2368 for (natptr
= native
;
2370 --count
, natptr
+= each_size
, ++generic
)
2371 MY_swap_std_reloc_out (abfd
, *generic
,
2372 (struct reloc_std_external
*) natptr
);
2375 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
2377 bfd_release (abfd
, native
);
2380 bfd_release (abfd
, native
);
2385 /* This is stupid. This function should be a boolean predicate. */
2388 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
2393 arelent
*tblptr
= section
->relocation
;
2396 if (section
== obj_bsssec (abfd
))
2402 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
) (abfd
, section
, symbols
)))
2405 if (section
->flags
& SEC_CONSTRUCTOR
)
2407 arelent_chain
*chain
= section
->constructor_chain
;
2408 for (count
= 0; count
< section
->reloc_count
; count
++)
2410 *relptr
++ = &chain
->relent
;
2411 chain
= chain
->next
;
2416 tblptr
= section
->relocation
;
2418 for (count
= 0; count
++ < section
->reloc_count
; )
2420 *relptr
++ = tblptr
++;
2425 return section
->reloc_count
;
2429 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
2431 if (bfd_get_format (abfd
) != bfd_object
)
2433 bfd_set_error (bfd_error_invalid_operation
);
2437 if (asect
->flags
& SEC_CONSTRUCTOR
)
2438 return sizeof (arelent
*) * (asect
->reloc_count
+ 1);
2440 if (asect
== obj_datasec (abfd
))
2441 return sizeof (arelent
*)
2442 * ((exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
))
2445 if (asect
== obj_textsec (abfd
))
2446 return sizeof (arelent
*)
2447 * ((exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
))
2450 if (asect
== obj_bsssec (abfd
))
2451 return sizeof (arelent
*);
2453 if (asect
== obj_bsssec (abfd
))
2456 bfd_set_error (bfd_error_invalid_operation
);
2461 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2463 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2466 return (bfd_get_symcount (abfd
)+1) * (sizeof (aout_symbol_type
*));
2470 NAME (aout
, get_lineno
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2471 asymbol
*ignore_symbol ATTRIBUTE_UNUSED
)
2477 NAME (aout
, get_symbol_info
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2481 bfd_symbol_info (symbol
, ret
);
2483 if (ret
->type
== '?')
2485 int type_code
= aout_symbol (symbol
)->type
& 0xff;
2486 const char *stab_name
= bfd_get_stab_name (type_code
);
2487 static char buf
[10];
2489 if (stab_name
== NULL
)
2491 sprintf (buf
, "(%d)", type_code
);
2495 ret
->stab_type
= type_code
;
2496 ret
->stab_other
= (unsigned) (aout_symbol (symbol
)->other
& 0xff);
2497 ret
->stab_desc
= (unsigned) (aout_symbol (symbol
)->desc
& 0xffff);
2498 ret
->stab_name
= stab_name
;
2503 NAME (aout
, print_symbol
) (bfd
*abfd
,
2506 bfd_print_symbol_type how
)
2508 FILE *file
= (FILE *)afile
;
2512 case bfd_print_symbol_name
:
2514 fprintf (file
,"%s", symbol
->name
);
2516 case bfd_print_symbol_more
:
2517 fprintf (file
,"%4x %2x %2x",
2518 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2519 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2520 (unsigned) (aout_symbol (symbol
)->type
));
2522 case bfd_print_symbol_all
:
2524 const char *section_name
= symbol
->section
->name
;
2526 bfd_print_symbol_vandf (abfd
, (void *)file
, symbol
);
2528 fprintf (file
," %-5s %04x %02x %02x",
2530 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2531 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2532 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2534 fprintf (file
," %s", symbol
->name
);
2540 /* If we don't have to allocate more than 1MB to hold the generic
2541 symbols, we use the generic minisymbol methord: it's faster, since
2542 it only translates the symbols once, not multiple times. */
2543 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2545 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2546 symbols. The minisymbol_to_symbol function translates these into
2547 BFD asymbol structures. */
2550 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2551 bfd_boolean dynamic
,
2553 unsigned int *sizep
)
2556 /* We could handle the dynamic symbols here as well, but it's
2557 easier to hand them off. */
2558 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2560 if (! aout_get_external_symbols (abfd
))
2563 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2564 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2566 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2568 /* By passing the external symbols back from this routine, we are
2569 giving up control over the memory block. Clear
2570 obj_aout_external_syms, so that we do not try to free it
2572 obj_aout_external_syms (abfd
) = NULL
;
2574 *sizep
= EXTERNAL_NLIST_SIZE
;
2575 return obj_aout_external_sym_count (abfd
);
2578 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2579 unmodified a.out symbol. The SYM argument is a structure returned
2580 by bfd_make_empty_symbol, which we fill in here. */
2583 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2584 bfd_boolean dynamic
,
2585 const void * minisym
,
2589 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2590 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2592 memset (sym
, 0, sizeof (aout_symbol_type
));
2594 /* We call translate_symbol_table to translate a single symbol. */
2595 if (! (NAME (aout
, translate_symbol_table
)
2597 (aout_symbol_type
*) sym
,
2598 (struct external_nlist
*) minisym
,
2600 obj_aout_external_strings (abfd
),
2601 obj_aout_external_string_size (abfd
),
2608 /* Provided a BFD, a section and an offset into the section, calculate
2609 and return the name of the source file and the line nearest to the
2613 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2617 const char **filename_ptr
,
2618 const char **functionname_ptr
,
2619 unsigned int *line_ptr
)
2621 /* Run down the file looking for the filename, function and linenumber. */
2623 const char *directory_name
= NULL
;
2624 const char *main_file_name
= NULL
;
2625 const char *current_file_name
= NULL
;
2626 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2627 const char *line_directory_name
= NULL
; /* Value of directory_name at line number. */
2628 bfd_vma low_line_vma
= 0;
2629 bfd_vma low_func_vma
= 0;
2631 bfd_size_type filelen
, funclen
;
2634 *filename_ptr
= abfd
->filename
;
2635 *functionname_ptr
= 0;
2638 if (symbols
!= NULL
)
2640 for (p
= symbols
; *p
; p
++)
2642 aout_symbol_type
*q
= (aout_symbol_type
*) (*p
);
2647 /* If this looks like a file name symbol, and it comes after
2648 the line number we have found so far, but before the
2649 offset, then we have probably not found the right line
2651 if (q
->symbol
.value
<= offset
2652 && ((q
->symbol
.value
> low_line_vma
2653 && (line_file_name
!= NULL
2655 || (q
->symbol
.value
> low_func_vma
2658 const char *symname
;
2660 symname
= q
->symbol
.name
;
2661 if (strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2663 if (q
->symbol
.value
> low_line_vma
)
2666 line_file_name
= NULL
;
2668 if (q
->symbol
.value
> low_func_vma
)
2675 /* If this symbol is less than the offset, but greater than
2676 the line number we have found so far, then we have not
2677 found the right line number. */
2678 if (q
->symbol
.value
<= offset
)
2680 if (q
->symbol
.value
> low_line_vma
)
2683 line_file_name
= NULL
;
2685 if (q
->symbol
.value
> low_func_vma
)
2689 main_file_name
= current_file_name
= q
->symbol
.name
;
2690 /* Look ahead to next symbol to check if that too is an N_SO. */
2694 q
= (aout_symbol_type
*) (*p
);
2695 if (q
->type
!= (int)N_SO
)
2698 /* Found a second N_SO First is directory; second is filename. */
2699 directory_name
= current_file_name
;
2700 main_file_name
= current_file_name
= q
->symbol
.name
;
2701 if (obj_textsec (abfd
) != section
)
2705 current_file_name
= q
->symbol
.name
;
2712 /* We'll keep this if it resolves nearer than the one we have
2714 if (q
->symbol
.value
>= low_line_vma
2715 && q
->symbol
.value
<= offset
)
2717 *line_ptr
= q
->desc
;
2718 low_line_vma
= q
->symbol
.value
;
2719 line_file_name
= current_file_name
;
2720 line_directory_name
= directory_name
;
2725 /* We'll keep this if it is nearer than the one we have already. */
2726 if (q
->symbol
.value
>= low_func_vma
&&
2727 q
->symbol
.value
<= offset
)
2729 low_func_vma
= q
->symbol
.value
;
2730 func
= (asymbol
*)q
;
2732 else if (q
->symbol
.value
> offset
)
2743 main_file_name
= line_file_name
;
2744 directory_name
= line_directory_name
;
2747 if (main_file_name
== NULL
2748 || IS_ABSOLUTE_PATH (main_file_name
)
2749 || directory_name
== NULL
)
2752 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2757 funclen
= strlen (bfd_asymbol_name (func
));
2759 if (adata (abfd
).line_buf
!= NULL
)
2760 free (adata (abfd
).line_buf
);
2762 if (filelen
+ funclen
== 0)
2763 adata (abfd
).line_buf
= buf
= NULL
;
2766 buf
= bfd_malloc (filelen
+ funclen
+ 3);
2767 adata (abfd
).line_buf
= buf
;
2772 if (main_file_name
!= NULL
)
2774 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2775 *filename_ptr
= main_file_name
;
2778 sprintf (buf
, "%s%s", directory_name
, main_file_name
);
2779 *filename_ptr
= buf
;
2786 const char *function
= func
->name
;
2789 /* The caller expects a symbol name. We actually have a
2790 function name, without the leading underscore. Put the
2791 underscore back in, so that the caller gets a symbol name. */
2792 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2793 strcpy (buf
, function
);
2796 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2797 strcpy (buf
+ 1, function
);
2799 /* Have to remove : stuff. */
2800 colon
= strchr (buf
, ':');
2803 *functionname_ptr
= buf
;
2810 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2811 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2813 return adata (abfd
).exec_bytes_size
;
2816 /* Free all information we have cached for this BFD. We can always
2817 read it again later if we need it. */
2820 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2824 if (bfd_get_format (abfd
) != bfd_object
2825 || abfd
->tdata
.aout_data
== NULL
)
2828 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2829 BFCI_FREE (obj_aout_symbols (abfd
));
2831 obj_aout_external_syms (abfd
) = 0;
2832 bfd_free_window (&obj_aout_sym_window (abfd
));
2833 bfd_free_window (&obj_aout_string_window (abfd
));
2834 obj_aout_external_strings (abfd
) = 0;
2836 BFCI_FREE (obj_aout_external_syms (abfd
));
2837 BFCI_FREE (obj_aout_external_strings (abfd
));
2839 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2840 BFCI_FREE (o
->relocation
);
2846 /* a.out link code. */
2848 /* Routine to create an entry in an a.out link hash table. */
2850 struct bfd_hash_entry
*
2851 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2852 struct bfd_hash_table
*table
,
2855 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2857 /* Allocate the structure if it has not already been allocated by a
2860 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
2864 /* Call the allocation method of the superclass. */
2865 ret
= ((struct aout_link_hash_entry
*)
2866 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2870 /* Set local fields. */
2871 ret
->written
= FALSE
;
2875 return (struct bfd_hash_entry
*) ret
;
2878 /* Initialize an a.out link hash table. */
2881 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2883 struct bfd_hash_entry
*(*newfunc
)
2884 (struct bfd_hash_entry
*, struct bfd_hash_table
*,
2886 unsigned int entsize
)
2888 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2891 /* Create an a.out link hash table. */
2893 struct bfd_link_hash_table
*
2894 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2896 struct aout_link_hash_table
*ret
;
2897 bfd_size_type amt
= sizeof (* ret
);
2899 ret
= bfd_malloc (amt
);
2903 if (!NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2904 NAME (aout
, link_hash_newfunc
),
2905 sizeof (struct aout_link_hash_entry
)))
2913 /* Add all symbols from an object file to the hash table. */
2916 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2918 bfd_boolean (*add_one_symbol
)
2919 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
2920 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
2921 struct bfd_link_hash_entry
**);
2922 struct external_nlist
*syms
;
2923 bfd_size_type sym_count
;
2926 struct aout_link_hash_entry
**sym_hash
;
2927 struct external_nlist
*p
;
2928 struct external_nlist
*pend
;
2931 syms
= obj_aout_external_syms (abfd
);
2932 sym_count
= obj_aout_external_sym_count (abfd
);
2933 strings
= obj_aout_external_strings (abfd
);
2934 if (info
->keep_memory
)
2939 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
2941 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
2942 (abfd
, info
, &syms
, &sym_count
, &strings
)))
2946 /* We keep a list of the linker hash table entries that correspond
2947 to particular symbols. We could just look them up in the hash
2948 table, but keeping the list is more efficient. Perhaps this
2949 should be conditional on info->keep_memory. */
2950 amt
= sym_count
* sizeof (struct aout_link_hash_entry
*);
2951 sym_hash
= bfd_alloc (abfd
, amt
);
2952 if (sym_hash
== NULL
&& sym_count
!= 0)
2954 obj_aout_sym_hashes (abfd
) = sym_hash
;
2956 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
2957 if (add_one_symbol
== NULL
)
2958 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
2961 pend
= p
+ sym_count
;
2962 for (; p
< pend
; p
++, sym_hash
++)
2973 type
= H_GET_8 (abfd
, p
->e_type
);
2975 /* Ignore debugging symbols. */
2976 if ((type
& N_STAB
) != 0)
2979 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
2980 value
= GET_WORD (abfd
, p
->e_value
);
2997 /* Ignore symbols that are not externally visible. */
3000 /* Ignore local indirect symbol. */
3005 case N_UNDF
| N_EXT
:
3008 section
= bfd_und_section_ptr
;
3012 section
= bfd_com_section_ptr
;
3015 section
= bfd_abs_section_ptr
;
3017 case N_TEXT
| N_EXT
:
3018 section
= obj_textsec (abfd
);
3019 value
-= bfd_get_section_vma (abfd
, section
);
3021 case N_DATA
| N_EXT
:
3022 case N_SETV
| N_EXT
:
3023 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3024 translate_from_native_sym_flags. */
3025 section
= obj_datasec (abfd
);
3026 value
-= bfd_get_section_vma (abfd
, section
);
3029 section
= obj_bsssec (abfd
);
3030 value
-= bfd_get_section_vma (abfd
, section
);
3032 case N_INDR
| N_EXT
:
3033 /* An indirect symbol. The next symbol is the symbol
3034 which this one really is. */
3035 BFD_ASSERT (p
+ 1 < pend
);
3037 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3038 section
= bfd_ind_section_ptr
;
3039 flags
|= BSF_INDIRECT
;
3041 case N_COMM
| N_EXT
:
3042 section
= bfd_com_section_ptr
;
3044 case N_SETA
: case N_SETA
| N_EXT
:
3045 section
= bfd_abs_section_ptr
;
3046 flags
|= BSF_CONSTRUCTOR
;
3048 case N_SETT
: case N_SETT
| N_EXT
:
3049 section
= obj_textsec (abfd
);
3050 flags
|= BSF_CONSTRUCTOR
;
3051 value
-= bfd_get_section_vma (abfd
, section
);
3053 case N_SETD
: case N_SETD
| N_EXT
:
3054 section
= obj_datasec (abfd
);
3055 flags
|= BSF_CONSTRUCTOR
;
3056 value
-= bfd_get_section_vma (abfd
, section
);
3058 case N_SETB
: case N_SETB
| N_EXT
:
3059 section
= obj_bsssec (abfd
);
3060 flags
|= BSF_CONSTRUCTOR
;
3061 value
-= bfd_get_section_vma (abfd
, section
);
3064 /* A warning symbol. The next symbol is the one to warn
3065 about. If there is no next symbol, just look away. */
3070 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3071 section
= bfd_und_section_ptr
;
3072 flags
|= BSF_WARNING
;
3075 section
= bfd_und_section_ptr
;
3079 section
= bfd_abs_section_ptr
;
3083 section
= obj_textsec (abfd
);
3084 value
-= bfd_get_section_vma (abfd
, section
);
3088 section
= obj_datasec (abfd
);
3089 value
-= bfd_get_section_vma (abfd
, section
);
3093 section
= obj_bsssec (abfd
);
3094 value
-= bfd_get_section_vma (abfd
, section
);
3099 if (! ((*add_one_symbol
)
3100 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
3101 (struct bfd_link_hash_entry
**) sym_hash
)))
3104 /* Restrict the maximum alignment of a common symbol based on
3105 the architecture, since a.out has no way to represent
3106 alignment requirements of a section in a .o file. FIXME:
3107 This isn't quite right: it should use the architecture of the
3108 output file, not the input files. */
3109 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3110 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3111 bfd_get_arch_info (abfd
)->section_align_power
))
3112 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3113 bfd_get_arch_info (abfd
)->section_align_power
;
3115 /* If this is a set symbol, and we are not building sets, then
3116 it is possible for the hash entry to not have been set. In
3117 such a case, treat the symbol as not globally defined. */
3118 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3120 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3124 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3131 /* Free up the internal symbols read from an a.out file. */
3134 aout_link_free_symbols (bfd
*abfd
)
3136 if (obj_aout_external_syms (abfd
) != NULL
)
3139 bfd_free_window (&obj_aout_sym_window (abfd
));
3141 free ((void *) obj_aout_external_syms (abfd
));
3143 obj_aout_external_syms (abfd
) = NULL
;
3145 if (obj_aout_external_strings (abfd
) != NULL
)
3148 bfd_free_window (&obj_aout_string_window (abfd
));
3150 free ((void *) obj_aout_external_strings (abfd
));
3152 obj_aout_external_strings (abfd
) = NULL
;
3157 /* Add symbols from an a.out object file. */
3160 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3162 if (! aout_get_external_symbols (abfd
))
3164 if (! aout_link_add_symbols (abfd
, info
))
3166 if (! info
->keep_memory
)
3168 if (! aout_link_free_symbols (abfd
))
3174 /* Look through the internal symbols to see if this object file should
3175 be included in the link. We should include this object file if it
3176 defines any symbols which are currently undefined. If this object
3177 file defines a common symbol, then we may adjust the size of the
3178 known symbol but we do not include the object file in the link
3179 (unless there is some other reason to include it). */
3182 aout_link_check_ar_symbols (bfd
*abfd
,
3183 struct bfd_link_info
*info
,
3184 bfd_boolean
*pneeded
)
3186 struct external_nlist
*p
;
3187 struct external_nlist
*pend
;
3192 /* Look through all the symbols. */
3193 p
= obj_aout_external_syms (abfd
);
3194 pend
= p
+ obj_aout_external_sym_count (abfd
);
3195 strings
= obj_aout_external_strings (abfd
);
3196 for (; p
< pend
; p
++)
3198 int type
= H_GET_8 (abfd
, p
->e_type
);
3200 struct bfd_link_hash_entry
*h
;
3202 /* Ignore symbols that are not externally visible. This is an
3203 optimization only, as we check the type more thoroughly
3205 if (((type
& N_EXT
) == 0
3206 || (type
& N_STAB
) != 0
3213 if (type
== N_WARNING
3219 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3220 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
3222 /* We are only interested in symbols that are currently
3223 undefined or common. */
3225 || (h
->type
!= bfd_link_hash_undefined
3226 && h
->type
!= bfd_link_hash_common
))
3228 if (type
== (N_INDR
| N_EXT
))
3233 if (type
== (N_TEXT
| N_EXT
)
3234 || type
== (N_DATA
| N_EXT
)
3235 || type
== (N_BSS
| N_EXT
)
3236 || type
== (N_ABS
| N_EXT
)
3237 || type
== (N_INDR
| N_EXT
))
3239 /* This object file defines this symbol. We must link it
3240 in. This is true regardless of whether the current
3241 definition of the symbol is undefined or common.
3243 If the current definition is common, we have a case in
3244 which we have already seen an object file including:
3246 and this object file from the archive includes:
3248 In such a case, whether to include this object is target
3249 dependant for backward compatibility.
3251 FIXME: The SunOS 4.1.3 linker will pull in the archive
3252 element if the symbol is defined in the .data section,
3253 but not if it is defined in the .text section. That
3254 seems a bit crazy to me, and it has not been implemented
3255 yet. However, it might be correct. */
3256 if (h
->type
== bfd_link_hash_common
)
3260 switch (info
->common_skip_ar_aymbols
)
3262 case bfd_link_common_skip_text
:
3263 skip
= (type
== (N_TEXT
| N_EXT
));
3265 case bfd_link_common_skip_data
:
3266 skip
= (type
== (N_DATA
| N_EXT
));
3269 case bfd_link_common_skip_all
:
3278 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
3284 if (type
== (N_UNDF
| N_EXT
))
3288 value
= GET_WORD (abfd
, p
->e_value
);
3291 /* This symbol is common in the object from the archive
3293 if (h
->type
== bfd_link_hash_undefined
)
3298 symbfd
= h
->u
.undef
.abfd
;
3301 /* This symbol was created as undefined from
3302 outside BFD. We assume that we should link
3303 in the object file. This is done for the -u
3304 option in the linker. */
3305 if (! (*info
->callbacks
->add_archive_element
) (info
,
3312 /* Turn the current link symbol into a common
3313 symbol. It is already on the undefs list. */
3314 h
->type
= bfd_link_hash_common
;
3315 h
->u
.c
.p
= bfd_hash_allocate (&info
->hash
->table
,
3316 sizeof (struct bfd_link_hash_common_entry
));
3317 if (h
->u
.c
.p
== NULL
)
3320 h
->u
.c
.size
= value
;
3322 /* FIXME: This isn't quite right. The maximum
3323 alignment of a common symbol should be set by the
3324 architecture of the output file, not of the input
3326 power
= bfd_log2 (value
);
3327 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3328 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3329 h
->u
.c
.p
->alignment_power
= power
;
3331 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3336 /* Adjust the size of the common symbol if
3338 if (value
> h
->u
.c
.size
)
3339 h
->u
.c
.size
= value
;
3349 /* This symbol is weak but defined. We must pull it in if
3350 the current link symbol is undefined, but we don't want
3351 it if the current link symbol is common. */
3352 if (h
->type
== bfd_link_hash_undefined
)
3354 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
3362 /* We do not need this object file. */
3365 /* Check a single archive element to see if we need to include it in
3366 the link. *PNEEDED is set according to whether this element is
3367 needed in the link or not. This is called from
3368 _bfd_generic_link_add_archive_symbols. */
3371 aout_link_check_archive_element (bfd
*abfd
,
3372 struct bfd_link_info
*info
,
3373 bfd_boolean
*pneeded
)
3375 if (! aout_get_external_symbols (abfd
))
3378 if (! aout_link_check_ar_symbols (abfd
, info
, pneeded
))
3383 if (! aout_link_add_symbols (abfd
, info
))
3387 if (! info
->keep_memory
|| ! *pneeded
)
3389 if (! aout_link_free_symbols (abfd
))
3396 /* Given an a.out BFD, add symbols to the global hash table as
3400 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
3402 switch (bfd_get_format (abfd
))
3405 return aout_link_add_object_symbols (abfd
, info
);
3407 return _bfd_generic_link_add_archive_symbols
3408 (abfd
, info
, aout_link_check_archive_element
);
3410 bfd_set_error (bfd_error_wrong_format
);
3415 /* A hash table used for header files with N_BINCL entries. */
3417 struct aout_link_includes_table
3419 struct bfd_hash_table root
;
3422 /* A linked list of totals that we have found for a particular header
3425 struct aout_link_includes_totals
3427 struct aout_link_includes_totals
*next
;
3431 /* An entry in the header file hash table. */
3433 struct aout_link_includes_entry
3435 struct bfd_hash_entry root
;
3436 /* List of totals we have found for this file. */
3437 struct aout_link_includes_totals
*totals
;
3440 /* Look up an entry in an the header file hash table. */
3442 #define aout_link_includes_lookup(table, string, create, copy) \
3443 ((struct aout_link_includes_entry *) \
3444 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3446 /* During the final link step we need to pass around a bunch of
3447 information, so we do it in an instance of this structure. */
3449 struct aout_final_link_info
3451 /* General link information. */
3452 struct bfd_link_info
*info
;
3455 /* Reloc file positions. */
3456 file_ptr treloff
, dreloff
;
3457 /* File position of symbols. */
3460 struct bfd_strtab_hash
*strtab
;
3461 /* Header file hash table. */
3462 struct aout_link_includes_table includes
;
3463 /* A buffer large enough to hold the contents of any section. */
3465 /* A buffer large enough to hold the relocs of any section. */
3467 /* A buffer large enough to hold the symbol map of any input BFD. */
3469 /* A buffer large enough to hold output symbols of any input BFD. */
3470 struct external_nlist
*output_syms
;
3473 /* The function to create a new entry in the header file hash table. */
3475 static struct bfd_hash_entry
*
3476 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
3477 struct bfd_hash_table
*table
,
3480 struct aout_link_includes_entry
*ret
=
3481 (struct aout_link_includes_entry
*) entry
;
3483 /* Allocate the structure if it has not already been allocated by a
3486 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
3490 /* Call the allocation method of the superclass. */
3491 ret
= ((struct aout_link_includes_entry
*)
3492 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3495 /* Set local fields. */
3499 return (struct bfd_hash_entry
*) ret
;
3502 /* Write out a symbol that was not associated with an a.out input
3506 aout_link_write_other_symbol (struct aout_link_hash_entry
*h
, void * data
)
3508 struct aout_final_link_info
*finfo
= (struct aout_final_link_info
*) data
;
3512 struct external_nlist outsym
;
3516 if (h
->root
.type
== bfd_link_hash_warning
)
3518 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
3519 if (h
->root
.type
== bfd_link_hash_new
)
3523 output_bfd
= finfo
->output_bfd
;
3525 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
3527 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
3528 (output_bfd
, finfo
->info
, h
)))
3530 /* FIXME: No way to handle errors. */
3540 /* An indx of -2 means the symbol must be written. */
3542 && (finfo
->info
->strip
== strip_all
3543 || (finfo
->info
->strip
== strip_some
3544 && bfd_hash_lookup (finfo
->info
->keep_hash
, h
->root
.root
.string
,
3545 FALSE
, FALSE
) == NULL
)))
3548 switch (h
->root
.type
)
3551 case bfd_link_hash_warning
:
3553 /* Avoid variable not initialized warnings. */
3555 case bfd_link_hash_new
:
3556 /* This can happen for set symbols when sets are not being
3559 case bfd_link_hash_undefined
:
3560 type
= N_UNDF
| N_EXT
;
3563 case bfd_link_hash_defined
:
3564 case bfd_link_hash_defweak
:
3568 sec
= h
->root
.u
.def
.section
->output_section
;
3569 BFD_ASSERT (bfd_is_abs_section (sec
)
3570 || sec
->owner
== output_bfd
);
3571 if (sec
== obj_textsec (output_bfd
))
3572 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
3573 else if (sec
== obj_datasec (output_bfd
))
3574 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
3575 else if (sec
== obj_bsssec (output_bfd
))
3576 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
3578 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
3580 val
= (h
->root
.u
.def
.value
3582 + h
->root
.u
.def
.section
->output_offset
);
3585 case bfd_link_hash_common
:
3586 type
= N_UNDF
| N_EXT
;
3587 val
= h
->root
.u
.c
.size
;
3589 case bfd_link_hash_undefweak
:
3592 case bfd_link_hash_indirect
:
3593 /* We ignore these symbols, since the indirected symbol is
3594 already in the hash table. */
3598 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
3599 H_PUT_8 (output_bfd
, 0, outsym
.e_other
);
3600 H_PUT_16 (output_bfd
, 0, outsym
.e_desc
);
3601 indx
= add_to_stringtab (output_bfd
, finfo
->strtab
, h
->root
.root
.string
,
3603 if (indx
== - (bfd_size_type
) 1)
3604 /* FIXME: No way to handle errors. */
3607 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3608 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3610 amt
= EXTERNAL_NLIST_SIZE
;
3611 if (bfd_seek (output_bfd
, finfo
->symoff
, SEEK_SET
) != 0
3612 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3613 /* FIXME: No way to handle errors. */
3616 finfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
3617 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3618 ++obj_aout_external_sym_count (output_bfd
);
3623 /* Handle a link order which is supposed to generate a reloc. */
3626 aout_link_reloc_link_order (struct aout_final_link_info
*finfo
,
3628 struct bfd_link_order
*p
)
3630 struct bfd_link_order_reloc
*pr
;
3633 reloc_howto_type
*howto
;
3634 file_ptr
*reloff_ptr
= NULL
;
3635 struct reloc_std_external srel
;
3636 struct reloc_ext_external erel
;
3642 if (p
->type
== bfd_section_reloc_link_order
)
3645 if (bfd_is_abs_section (pr
->u
.section
))
3646 r_index
= N_ABS
| N_EXT
;
3649 BFD_ASSERT (pr
->u
.section
->owner
== finfo
->output_bfd
);
3650 r_index
= pr
->u
.section
->target_index
;
3655 struct aout_link_hash_entry
*h
;
3657 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3659 h
= ((struct aout_link_hash_entry
*)
3660 bfd_wrapped_link_hash_lookup (finfo
->output_bfd
, finfo
->info
,
3661 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3667 /* We decided to strip this symbol, but it turns out that we
3668 can't. Note that we lose the other and desc information
3669 here. I don't think that will ever matter for a global
3673 if (! aout_link_write_other_symbol (h
, (void *) finfo
))
3679 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
3680 (finfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0)))
3686 howto
= bfd_reloc_type_lookup (finfo
->output_bfd
, pr
->reloc
);
3689 bfd_set_error (bfd_error_bad_value
);
3693 if (o
== obj_textsec (finfo
->output_bfd
))
3694 reloff_ptr
= &finfo
->treloff
;
3695 else if (o
== obj_datasec (finfo
->output_bfd
))
3696 reloff_ptr
= &finfo
->dreloff
;
3700 if (obj_reloc_entry_size (finfo
->output_bfd
) == RELOC_STD_SIZE
)
3703 MY_put_reloc (finfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3713 r_pcrel
= (int) howto
->pc_relative
;
3714 r_baserel
= (howto
->type
& 8) != 0;
3715 r_jmptable
= (howto
->type
& 16) != 0;
3716 r_relative
= (howto
->type
& 32) != 0;
3717 r_length
= howto
->size
;
3719 PUT_WORD (finfo
->output_bfd
, p
->offset
, srel
.r_address
);
3720 if (bfd_header_big_endian (finfo
->output_bfd
))
3722 srel
.r_index
[0] = r_index
>> 16;
3723 srel
.r_index
[1] = r_index
>> 8;
3724 srel
.r_index
[2] = r_index
;
3726 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3727 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3728 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3729 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3730 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3731 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3735 srel
.r_index
[2] = r_index
>> 16;
3736 srel
.r_index
[1] = r_index
>> 8;
3737 srel
.r_index
[0] = r_index
;
3739 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3740 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3741 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3742 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3743 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3744 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3748 rel_ptr
= (void *) &srel
;
3750 /* We have to write the addend into the object file, since
3751 standard a.out relocs are in place. It would be more
3752 reliable if we had the current contents of the file here,
3753 rather than assuming zeroes, but we can't read the file since
3754 it was opened using bfd_openw. */
3755 if (pr
->addend
!= 0)
3758 bfd_reloc_status_type r
;
3762 size
= bfd_get_reloc_size (howto
);
3763 buf
= bfd_zmalloc (size
);
3766 r
= MY_relocate_contents (howto
, finfo
->output_bfd
,
3767 (bfd_vma
) pr
->addend
, buf
);
3773 case bfd_reloc_outofrange
:
3775 case bfd_reloc_overflow
:
3776 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
3778 (p
->type
== bfd_section_reloc_link_order
3779 ? bfd_section_name (finfo
->output_bfd
,
3782 howto
->name
, pr
->addend
, NULL
, NULL
, (bfd_vma
) 0)))
3789 ok
= bfd_set_section_contents (finfo
->output_bfd
, o
, (void *) buf
,
3790 (file_ptr
) p
->offset
, size
);
3798 #ifdef MY_put_ext_reloc
3799 MY_put_ext_reloc (finfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
3800 howto
, &erel
, pr
->addend
);
3802 PUT_WORD (finfo
->output_bfd
, p
->offset
, erel
.r_address
);
3804 if (bfd_header_big_endian (finfo
->output_bfd
))
3806 erel
.r_index
[0] = r_index
>> 16;
3807 erel
.r_index
[1] = r_index
>> 8;
3808 erel
.r_index
[2] = r_index
;
3810 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
3811 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
3815 erel
.r_index
[2] = r_index
>> 16;
3816 erel
.r_index
[1] = r_index
>> 8;
3817 erel
.r_index
[0] = r_index
;
3819 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
3820 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
3823 PUT_WORD (finfo
->output_bfd
, (bfd_vma
) pr
->addend
, erel
.r_addend
);
3824 #endif /* MY_put_ext_reloc */
3826 rel_ptr
= (void *) &erel
;
3829 amt
= obj_reloc_entry_size (finfo
->output_bfd
);
3830 if (bfd_seek (finfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3831 || bfd_bwrite (rel_ptr
, amt
, finfo
->output_bfd
) != amt
)
3834 *reloff_ptr
+= obj_reloc_entry_size (finfo
->output_bfd
);
3836 /* Assert that the relocs have not run into the symbols, and that n
3837 the text relocs have not run into the data relocs. */
3838 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (finfo
->output_bfd
)
3839 && (reloff_ptr
!= &finfo
->treloff
3841 <= obj_datasec (finfo
->output_bfd
)->rel_filepos
)));
3846 /* Get the section corresponding to a reloc index. */
3848 static INLINE asection
*
3849 aout_reloc_index_to_section (bfd
*abfd
, int indx
)
3851 switch (indx
& N_TYPE
)
3853 case N_TEXT
: return obj_textsec (abfd
);
3854 case N_DATA
: return obj_datasec (abfd
);
3855 case N_BSS
: return obj_bsssec (abfd
);
3857 case N_UNDF
: return bfd_abs_section_ptr
;
3863 /* Relocate an a.out section using standard a.out relocs. */
3866 aout_link_input_section_std (struct aout_final_link_info
*finfo
,
3868 asection
*input_section
,
3869 struct reloc_std_external
*relocs
,
3870 bfd_size_type rel_size
,
3873 bfd_boolean (*check_dynamic_reloc
)
3874 (struct bfd_link_info
*, bfd
*, asection
*,
3875 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3878 bfd_boolean relocatable
;
3879 struct external_nlist
*syms
;
3881 struct aout_link_hash_entry
**sym_hashes
;
3883 bfd_size_type reloc_count
;
3884 struct reloc_std_external
*rel
;
3885 struct reloc_std_external
*rel_end
;
3887 output_bfd
= finfo
->output_bfd
;
3888 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
3890 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
3891 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
3892 == output_bfd
->xvec
->header_byteorder
);
3894 relocatable
= finfo
->info
->relocatable
;
3895 syms
= obj_aout_external_syms (input_bfd
);
3896 strings
= obj_aout_external_strings (input_bfd
);
3897 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
3898 symbol_map
= finfo
->symbol_map
;
3900 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
3902 rel_end
= rel
+ reloc_count
;
3903 for (; rel
< rel_end
; rel
++)
3910 reloc_howto_type
*howto
;
3911 struct aout_link_hash_entry
*h
= NULL
;
3913 bfd_reloc_status_type r
;
3915 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
3917 #ifdef MY_reloc_howto
3918 howto
= MY_reloc_howto (input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
3924 unsigned int howto_idx
;
3926 if (bfd_header_big_endian (input_bfd
))
3928 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
3929 | ((unsigned int) rel
->r_index
[1] << 8)
3931 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
3932 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
3933 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
3934 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
3935 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
3936 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
3937 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
3941 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
3942 | ((unsigned int) rel
->r_index
[1] << 8)
3944 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
3945 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
3946 r_baserel
= (0 != (rel
->r_type
[0]
3947 & RELOC_STD_BITS_BASEREL_LITTLE
));
3948 r_jmptable
= (0 != (rel
->r_type
[0]
3949 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
3950 r_relative
= (0 != (rel
->r_type
[0]
3951 & RELOC_STD_BITS_RELATIVE_LITTLE
));
3952 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
3953 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
3956 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
3957 + 16 * r_jmptable
+ 32 * r_relative
);
3958 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_std
));
3959 howto
= howto_table_std
+ howto_idx
;
3965 /* We are generating a relocatable output file, and must
3966 modify the reloc accordingly. */
3969 /* If we know the symbol this relocation is against,
3970 convert it into a relocation against a section. This
3971 is what the native linker does. */
3972 h
= sym_hashes
[r_index
];
3974 && (h
->root
.type
== bfd_link_hash_defined
3975 || h
->root
.type
== bfd_link_hash_defweak
))
3977 asection
*output_section
;
3979 /* Change the r_extern value. */
3980 if (bfd_header_big_endian (output_bfd
))
3981 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
3983 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
3985 /* Compute a new r_index. */
3986 output_section
= h
->root
.u
.def
.section
->output_section
;
3987 if (output_section
== obj_textsec (output_bfd
))
3989 else if (output_section
== obj_datasec (output_bfd
))
3991 else if (output_section
== obj_bsssec (output_bfd
))
3996 /* Add the symbol value and the section VMA to the
3997 addend stored in the contents. */
3998 relocation
= (h
->root
.u
.def
.value
3999 + output_section
->vma
4000 + h
->root
.u
.def
.section
->output_offset
);
4004 /* We must change r_index according to the symbol
4006 r_index
= symbol_map
[r_index
];
4012 /* We decided to strip this symbol, but it
4013 turns out that we can't. Note that we
4014 lose the other and desc information here.
4015 I don't think that will ever matter for a
4021 if (! aout_link_write_other_symbol (h
,
4031 name
= strings
+ GET_WORD (input_bfd
,
4032 syms
[r_index
].e_strx
);
4033 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
4034 (finfo
->info
, name
, input_bfd
, input_section
,
4044 /* Write out the new r_index value. */
4045 if (bfd_header_big_endian (output_bfd
))
4047 rel
->r_index
[0] = r_index
>> 16;
4048 rel
->r_index
[1] = r_index
>> 8;
4049 rel
->r_index
[2] = r_index
;
4053 rel
->r_index
[2] = r_index
>> 16;
4054 rel
->r_index
[1] = r_index
>> 8;
4055 rel
->r_index
[0] = r_index
;
4062 /* This is a relocation against a section. We must
4063 adjust by the amount that the section moved. */
4064 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4065 relocation
= (section
->output_section
->vma
4066 + section
->output_offset
4070 /* Change the address of the relocation. */
4071 PUT_WORD (output_bfd
,
4072 r_addr
+ input_section
->output_offset
,
4075 /* Adjust a PC relative relocation by removing the reference
4076 to the original address in the section and including the
4077 reference to the new address. */
4079 relocation
-= (input_section
->output_section
->vma
4080 + input_section
->output_offset
4081 - input_section
->vma
);
4083 #ifdef MY_relocatable_reloc
4084 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4087 if (relocation
== 0)
4090 r
= MY_relocate_contents (howto
,
4091 input_bfd
, relocation
,
4098 /* We are generating an executable, and must do a full
4104 h
= sym_hashes
[r_index
];
4107 && (h
->root
.type
== bfd_link_hash_defined
4108 || h
->root
.type
== bfd_link_hash_defweak
))
4110 relocation
= (h
->root
.u
.def
.value
4111 + h
->root
.u
.def
.section
->output_section
->vma
4112 + h
->root
.u
.def
.section
->output_offset
);
4115 && h
->root
.type
== bfd_link_hash_undefweak
)
4127 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4128 relocation
= (section
->output_section
->vma
4129 + section
->output_offset
4132 relocation
+= input_section
->vma
;
4135 if (check_dynamic_reloc
!= NULL
)
4139 if (! ((*check_dynamic_reloc
)
4140 (finfo
->info
, input_bfd
, input_section
, h
,
4141 (void *) rel
, contents
, &skip
, &relocation
)))
4147 /* Now warn if a global symbol is undefined. We could not
4148 do this earlier, because check_dynamic_reloc might want
4149 to skip this reloc. */
4150 if (hundef
&& ! finfo
->info
->shared
&& ! r_baserel
)
4155 name
= h
->root
.root
.string
;
4157 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4158 if (! ((*finfo
->info
->callbacks
->undefined_symbol
)
4159 (finfo
->info
, name
, input_bfd
, input_section
,
4164 r
= MY_final_link_relocate (howto
,
4165 input_bfd
, input_section
,
4166 contents
, r_addr
, relocation
,
4170 if (r
!= bfd_reloc_ok
)
4175 case bfd_reloc_outofrange
:
4177 case bfd_reloc_overflow
:
4184 name
= strings
+ GET_WORD (input_bfd
,
4185 syms
[r_index
].e_strx
);
4190 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4191 name
= bfd_section_name (input_bfd
, s
);
4193 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
4194 (finfo
->info
, (h
? &h
->root
: NULL
), name
,
4195 howto
->name
, (bfd_vma
) 0, input_bfd
,
4196 input_section
, r_addr
)))
4207 /* Relocate an a.out section using extended a.out relocs. */
4210 aout_link_input_section_ext (struct aout_final_link_info
*finfo
,
4212 asection
*input_section
,
4213 struct reloc_ext_external
*relocs
,
4214 bfd_size_type rel_size
,
4217 bfd_boolean (*check_dynamic_reloc
)
4218 (struct bfd_link_info
*, bfd
*, asection
*,
4219 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
4222 bfd_boolean relocatable
;
4223 struct external_nlist
*syms
;
4225 struct aout_link_hash_entry
**sym_hashes
;
4227 bfd_size_type reloc_count
;
4228 struct reloc_ext_external
*rel
;
4229 struct reloc_ext_external
*rel_end
;
4231 output_bfd
= finfo
->output_bfd
;
4232 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4234 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
4235 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4236 == output_bfd
->xvec
->header_byteorder
);
4238 relocatable
= finfo
->info
->relocatable
;
4239 syms
= obj_aout_external_syms (input_bfd
);
4240 strings
= obj_aout_external_strings (input_bfd
);
4241 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4242 symbol_map
= finfo
->symbol_map
;
4244 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
4246 rel_end
= rel
+ reloc_count
;
4247 for (; rel
< rel_end
; rel
++)
4252 unsigned int r_type
;
4254 struct aout_link_hash_entry
*h
= NULL
;
4255 asection
*r_section
= NULL
;
4258 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4260 if (bfd_header_big_endian (input_bfd
))
4262 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4263 | ((unsigned int) rel
->r_index
[1] << 8)
4265 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
4266 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
4267 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
4271 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4272 | ((unsigned int) rel
->r_index
[1] << 8)
4274 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
4275 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
4276 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
4279 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
4281 BFD_ASSERT (r_type
< TABLE_SIZE (howto_table_ext
));
4285 /* We are generating a relocatable output file, and must
4286 modify the reloc accordingly. */
4288 || r_type
== (unsigned int) RELOC_BASE10
4289 || r_type
== (unsigned int) RELOC_BASE13
4290 || r_type
== (unsigned int) RELOC_BASE22
)
4292 /* If we know the symbol this relocation is against,
4293 convert it into a relocation against a section. This
4294 is what the native linker does. */
4295 if (r_type
== (unsigned int) RELOC_BASE10
4296 || r_type
== (unsigned int) RELOC_BASE13
4297 || r_type
== (unsigned int) RELOC_BASE22
)
4300 h
= sym_hashes
[r_index
];
4302 && (h
->root
.type
== bfd_link_hash_defined
4303 || h
->root
.type
== bfd_link_hash_defweak
))
4305 asection
*output_section
;
4307 /* Change the r_extern value. */
4308 if (bfd_header_big_endian (output_bfd
))
4309 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
4311 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
4313 /* Compute a new r_index. */
4314 output_section
= h
->root
.u
.def
.section
->output_section
;
4315 if (output_section
== obj_textsec (output_bfd
))
4317 else if (output_section
== obj_datasec (output_bfd
))
4319 else if (output_section
== obj_bsssec (output_bfd
))
4324 /* Add the symbol value and the section VMA to the
4326 relocation
= (h
->root
.u
.def
.value
4327 + output_section
->vma
4328 + h
->root
.u
.def
.section
->output_offset
);
4330 /* Now RELOCATION is the VMA of the final
4331 destination. If this is a PC relative reloc,
4332 then ADDEND is the negative of the source VMA.
4333 We want to set ADDEND to the difference between
4334 the destination VMA and the source VMA, which
4335 means we must adjust RELOCATION by the change in
4336 the source VMA. This is done below. */
4340 /* We must change r_index according to the symbol
4342 r_index
= symbol_map
[r_index
];
4348 /* We decided to strip this symbol, but it
4349 turns out that we can't. Note that we
4350 lose the other and desc information here.
4351 I don't think that will ever matter for a
4357 if (! aout_link_write_other_symbol (h
,
4367 name
= strings
+ GET_WORD (input_bfd
,
4368 syms
[r_index
].e_strx
);
4369 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
4370 (finfo
->info
, name
, input_bfd
, input_section
,
4379 /* If this is a PC relative reloc, then the addend
4380 is the negative of the source VMA. We must
4381 adjust it by the change in the source VMA. This
4385 /* Write out the new r_index value. */
4386 if (bfd_header_big_endian (output_bfd
))
4388 rel
->r_index
[0] = r_index
>> 16;
4389 rel
->r_index
[1] = r_index
>> 8;
4390 rel
->r_index
[2] = r_index
;
4394 rel
->r_index
[2] = r_index
>> 16;
4395 rel
->r_index
[1] = r_index
>> 8;
4396 rel
->r_index
[0] = r_index
;
4401 /* This is a relocation against a section. We must
4402 adjust by the amount that the section moved. */
4403 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4404 relocation
= (r_section
->output_section
->vma
4405 + r_section
->output_offset
4408 /* If this is a PC relative reloc, then the addend is
4409 the difference in VMA between the destination and the
4410 source. We have just adjusted for the change in VMA
4411 of the destination, so we must also adjust by the
4412 change in VMA of the source. This is done below. */
4415 /* As described above, we must always adjust a PC relative
4416 reloc by the change in VMA of the source. However, if
4417 pcrel_offset is set, then the addend does not include the
4418 location within the section, in which case we don't need
4419 to adjust anything. */
4420 if (howto_table_ext
[r_type
].pc_relative
4421 && ! howto_table_ext
[r_type
].pcrel_offset
)
4422 relocation
-= (input_section
->output_section
->vma
4423 + input_section
->output_offset
4424 - input_section
->vma
);
4426 /* Change the addend if necessary. */
4427 if (relocation
!= 0)
4428 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
4430 /* Change the address of the relocation. */
4431 PUT_WORD (output_bfd
,
4432 r_addr
+ input_section
->output_offset
,
4438 bfd_reloc_status_type r
;
4440 /* We are generating an executable, and must do a full
4446 h
= sym_hashes
[r_index
];
4449 && (h
->root
.type
== bfd_link_hash_defined
4450 || h
->root
.type
== bfd_link_hash_defweak
))
4452 relocation
= (h
->root
.u
.def
.value
4453 + h
->root
.u
.def
.section
->output_section
->vma
4454 + h
->root
.u
.def
.section
->output_offset
);
4457 && h
->root
.type
== bfd_link_hash_undefweak
)
4465 else if (r_type
== (unsigned int) RELOC_BASE10
4466 || r_type
== (unsigned int) RELOC_BASE13
4467 || r_type
== (unsigned int) RELOC_BASE22
)
4469 struct external_nlist
*sym
;
4472 /* For base relative relocs, r_index is always an index
4473 into the symbol table, even if r_extern is 0. */
4474 sym
= syms
+ r_index
;
4475 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4476 if ((type
& N_TYPE
) == N_TEXT
4478 r_section
= obj_textsec (input_bfd
);
4479 else if ((type
& N_TYPE
) == N_DATA
4481 r_section
= obj_datasec (input_bfd
);
4482 else if ((type
& N_TYPE
) == N_BSS
4484 r_section
= obj_bsssec (input_bfd
);
4485 else if ((type
& N_TYPE
) == N_ABS
4487 r_section
= bfd_abs_section_ptr
;
4490 relocation
= (r_section
->output_section
->vma
4491 + r_section
->output_offset
4492 + (GET_WORD (input_bfd
, sym
->e_value
)
4497 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4499 /* If this is a PC relative reloc, then R_ADDEND is the
4500 difference between the two vmas, or
4501 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4503 old_dest_sec == section->vma
4505 old_src_sec == input_section->vma
4507 old_src_off == r_addr
4509 _bfd_final_link_relocate expects RELOCATION +
4510 R_ADDEND to be the VMA of the destination minus
4511 r_addr (the minus r_addr is because this relocation
4512 is not pcrel_offset, which is a bit confusing and
4513 should, perhaps, be changed), or
4516 new_dest_sec == output_section->vma + output_offset
4517 We arrange for this to happen by setting RELOCATION to
4518 new_dest_sec + old_src_sec - old_dest_sec
4520 If this is not a PC relative reloc, then R_ADDEND is
4521 simply the VMA of the destination, so we set
4522 RELOCATION to the change in the destination VMA, or
4523 new_dest_sec - old_dest_sec
4525 relocation
= (r_section
->output_section
->vma
4526 + r_section
->output_offset
4528 if (howto_table_ext
[r_type
].pc_relative
)
4529 relocation
+= input_section
->vma
;
4532 if (check_dynamic_reloc
!= NULL
)
4536 if (! ((*check_dynamic_reloc
)
4537 (finfo
->info
, input_bfd
, input_section
, h
,
4538 (void *) rel
, contents
, &skip
, &relocation
)))
4544 /* Now warn if a global symbol is undefined. We could not
4545 do this earlier, because check_dynamic_reloc might want
4546 to skip this reloc. */
4548 && ! finfo
->info
->shared
4549 && r_type
!= (unsigned int) RELOC_BASE10
4550 && r_type
!= (unsigned int) RELOC_BASE13
4551 && r_type
!= (unsigned int) RELOC_BASE22
)
4556 name
= h
->root
.root
.string
;
4558 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4559 if (! ((*finfo
->info
->callbacks
->undefined_symbol
)
4560 (finfo
->info
, name
, input_bfd
, input_section
,
4565 if (r_type
!= (unsigned int) RELOC_SPARC_REV32
)
4566 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
4567 input_bfd
, input_section
,
4568 contents
, r_addr
, relocation
,
4574 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
4575 x
= x
+ relocation
+ r_addend
;
4576 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
4580 if (r
!= bfd_reloc_ok
)
4585 case bfd_reloc_outofrange
:
4587 case bfd_reloc_overflow
:
4594 || r_type
== (unsigned int) RELOC_BASE10
4595 || r_type
== (unsigned int) RELOC_BASE13
4596 || r_type
== (unsigned int) RELOC_BASE22
)
4597 name
= strings
+ GET_WORD (input_bfd
,
4598 syms
[r_index
].e_strx
);
4603 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4604 name
= bfd_section_name (input_bfd
, s
);
4606 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
4607 (finfo
->info
, (h
? &h
->root
: NULL
), name
,
4608 howto_table_ext
[r_type
].name
,
4609 r_addend
, input_bfd
, input_section
, r_addr
)))
4621 /* Link an a.out section into the output file. */
4624 aout_link_input_section (struct aout_final_link_info
*finfo
,
4626 asection
*input_section
,
4627 file_ptr
*reloff_ptr
,
4628 bfd_size_type rel_size
)
4630 bfd_size_type input_size
;
4633 /* Get the section contents. */
4634 input_size
= input_section
->size
;
4635 if (! bfd_get_section_contents (input_bfd
, input_section
,
4636 (void *) finfo
->contents
,
4637 (file_ptr
) 0, input_size
))
4640 /* Read in the relocs if we haven't already done it. */
4641 if (aout_section_data (input_section
) != NULL
4642 && aout_section_data (input_section
)->relocs
!= NULL
)
4643 relocs
= aout_section_data (input_section
)->relocs
;
4646 relocs
= finfo
->relocs
;
4649 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4650 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
4655 /* Relocate the section contents. */
4656 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4658 if (! aout_link_input_section_std (finfo
, input_bfd
, input_section
,
4659 (struct reloc_std_external
*) relocs
,
4660 rel_size
, finfo
->contents
))
4665 if (! aout_link_input_section_ext (finfo
, input_bfd
, input_section
,
4666 (struct reloc_ext_external
*) relocs
,
4667 rel_size
, finfo
->contents
))
4671 /* Write out the section contents. */
4672 if (! bfd_set_section_contents (finfo
->output_bfd
,
4673 input_section
->output_section
,
4674 (void *) finfo
->contents
,
4675 (file_ptr
) input_section
->output_offset
,
4679 /* If we are producing relocatable output, the relocs were
4680 modified, and we now write them out. */
4681 if (finfo
->info
->relocatable
&& rel_size
> 0)
4683 if (bfd_seek (finfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4685 if (bfd_bwrite (relocs
, rel_size
, finfo
->output_bfd
) != rel_size
)
4687 *reloff_ptr
+= rel_size
;
4689 /* Assert that the relocs have not run into the symbols, and
4690 that if these are the text relocs they have not run into the
4692 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (finfo
->output_bfd
)
4693 && (reloff_ptr
!= &finfo
->treloff
4695 <= obj_datasec (finfo
->output_bfd
)->rel_filepos
)));
4701 /* Adjust and write out the symbols for an a.out file. Set the new
4702 symbol indices into a symbol_map. */
4705 aout_link_write_symbols (struct aout_final_link_info
*finfo
, bfd
*input_bfd
)
4708 bfd_size_type sym_count
;
4710 enum bfd_link_strip strip
;
4711 enum bfd_link_discard discard
;
4712 struct external_nlist
*outsym
;
4713 bfd_size_type strtab_index
;
4714 struct external_nlist
*sym
;
4715 struct external_nlist
*sym_end
;
4716 struct aout_link_hash_entry
**sym_hash
;
4719 bfd_boolean skip_next
;
4721 output_bfd
= finfo
->output_bfd
;
4722 sym_count
= obj_aout_external_sym_count (input_bfd
);
4723 strings
= obj_aout_external_strings (input_bfd
);
4724 strip
= finfo
->info
->strip
;
4725 discard
= finfo
->info
->discard
;
4726 outsym
= finfo
->output_syms
;
4728 /* First write out a symbol for this object file, unless we are
4729 discarding such symbols. */
4730 if (strip
!= strip_all
4731 && (strip
!= strip_some
4732 || bfd_hash_lookup (finfo
->info
->keep_hash
, input_bfd
->filename
,
4733 FALSE
, FALSE
) != NULL
)
4734 && discard
!= discard_all
)
4736 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4737 H_PUT_8 (output_bfd
, 0, outsym
->e_other
);
4738 H_PUT_16 (output_bfd
, 0, outsym
->e_desc
);
4739 strtab_index
= add_to_stringtab (output_bfd
, finfo
->strtab
,
4740 input_bfd
->filename
, FALSE
);
4741 if (strtab_index
== (bfd_size_type
) -1)
4743 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4744 PUT_WORD (output_bfd
,
4745 (bfd_get_section_vma (output_bfd
,
4746 obj_textsec (input_bfd
)->output_section
)
4747 + obj_textsec (input_bfd
)->output_offset
),
4749 ++obj_aout_external_sym_count (output_bfd
);
4755 sym
= obj_aout_external_syms (input_bfd
);
4756 sym_end
= sym
+ sym_count
;
4757 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4758 symbol_map
= finfo
->symbol_map
;
4759 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4760 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4764 struct aout_link_hash_entry
*h
;
4770 /* We set *symbol_map to 0 above for all symbols. If it has
4771 already been set to -1 for this symbol, it means that we are
4772 discarding it because it appears in a duplicate header file.
4773 See the N_BINCL code below. */
4774 if (*symbol_map
== -1)
4777 /* Initialize *symbol_map to -1, which means that the symbol was
4778 not copied into the output file. We will change it later if
4779 we do copy the symbol over. */
4782 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4783 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4789 /* Pass this symbol through. It is the target of an
4790 indirect or warning symbol. */
4791 val
= GET_WORD (input_bfd
, sym
->e_value
);
4796 /* Skip this symbol, which is the target of an indirect
4797 symbol that we have changed to no longer be an indirect
4804 struct aout_link_hash_entry
*hresolve
;
4806 /* We have saved the hash table entry for this symbol, if
4807 there is one. Note that we could just look it up again
4808 in the hash table, provided we first check that it is an
4812 /* Use the name from the hash table, in case the symbol was
4815 && h
->root
.type
!= bfd_link_hash_warning
)
4816 name
= h
->root
.root
.string
;
4818 /* If this is an indirect or warning symbol, then change
4819 hresolve to the base symbol. We also change *sym_hash so
4820 that the relocation routines relocate against the real
4823 if (h
!= (struct aout_link_hash_entry
*) NULL
4824 && (h
->root
.type
== bfd_link_hash_indirect
4825 || h
->root
.type
== bfd_link_hash_warning
))
4827 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4828 while (hresolve
->root
.type
== bfd_link_hash_indirect
4829 || hresolve
->root
.type
== bfd_link_hash_warning
)
4830 hresolve
= ((struct aout_link_hash_entry
*)
4831 hresolve
->root
.u
.i
.link
);
4832 *sym_hash
= hresolve
;
4835 /* If the symbol has already been written out, skip it. */
4839 if ((type
& N_TYPE
) == N_INDR
4840 || type
== N_WARNING
)
4842 *symbol_map
= h
->indx
;
4846 /* See if we are stripping this symbol. */
4852 case strip_debugger
:
4853 if ((type
& N_STAB
) != 0)
4857 if (bfd_hash_lookup (finfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4872 /* Get the value of the symbol. */
4873 if ((type
& N_TYPE
) == N_TEXT
4875 symsec
= obj_textsec (input_bfd
);
4876 else if ((type
& N_TYPE
) == N_DATA
4878 symsec
= obj_datasec (input_bfd
);
4879 else if ((type
& N_TYPE
) == N_BSS
4881 symsec
= obj_bsssec (input_bfd
);
4882 else if ((type
& N_TYPE
) == N_ABS
4884 symsec
= bfd_abs_section_ptr
;
4885 else if (((type
& N_TYPE
) == N_INDR
4886 && (hresolve
== NULL
4887 || (hresolve
->root
.type
!= bfd_link_hash_defined
4888 && hresolve
->root
.type
!= bfd_link_hash_defweak
4889 && hresolve
->root
.type
!= bfd_link_hash_common
)))
4890 || type
== N_WARNING
)
4892 /* Pass the next symbol through unchanged. The
4893 condition above for indirect symbols is so that if
4894 the indirect symbol was defined, we output it with
4895 the correct definition so the debugger will
4898 val
= GET_WORD (input_bfd
, sym
->e_value
);
4901 else if ((type
& N_STAB
) != 0)
4903 val
= GET_WORD (input_bfd
, sym
->e_value
);
4908 /* If we get here with an indirect symbol, it means that
4909 we are outputting it with a real definition. In such
4910 a case we do not want to output the next symbol,
4911 which is the target of the indirection. */
4912 if ((type
& N_TYPE
) == N_INDR
)
4917 /* We need to get the value from the hash table. We use
4918 hresolve so that if we have defined an indirect
4919 symbol we output the final definition. */
4922 switch (type
& N_TYPE
)
4925 symsec
= obj_textsec (input_bfd
);
4928 symsec
= obj_datasec (input_bfd
);
4931 symsec
= obj_bsssec (input_bfd
);
4934 symsec
= bfd_abs_section_ptr
;
4941 else if (hresolve
->root
.type
== bfd_link_hash_defined
4942 || hresolve
->root
.type
== bfd_link_hash_defweak
)
4944 asection
*input_section
;
4945 asection
*output_section
;
4947 /* This case usually means a common symbol which was
4948 turned into a defined symbol. */
4949 input_section
= hresolve
->root
.u
.def
.section
;
4950 output_section
= input_section
->output_section
;
4951 BFD_ASSERT (bfd_is_abs_section (output_section
)
4952 || output_section
->owner
== output_bfd
);
4953 val
= (hresolve
->root
.u
.def
.value
4954 + bfd_get_section_vma (output_bfd
, output_section
)
4955 + input_section
->output_offset
);
4957 /* Get the correct type based on the section. If
4958 this is a constructed set, force it to be
4959 globally visible. */
4968 if (output_section
== obj_textsec (output_bfd
))
4969 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4972 else if (output_section
== obj_datasec (output_bfd
))
4973 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4976 else if (output_section
== obj_bsssec (output_bfd
))
4977 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4981 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4985 else if (hresolve
->root
.type
== bfd_link_hash_common
)
4986 val
= hresolve
->root
.u
.c
.size
;
4987 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
4996 val
= (symsec
->output_section
->vma
4997 + symsec
->output_offset
4998 + (GET_WORD (input_bfd
, sym
->e_value
)
5001 /* If this is a global symbol set the written flag, and if
5002 it is a local symbol see if we should discard it. */
5006 h
->indx
= obj_aout_external_sym_count (output_bfd
);
5008 else if ((type
& N_TYPE
) != N_SETT
5009 && (type
& N_TYPE
) != N_SETD
5010 && (type
& N_TYPE
) != N_SETB
5011 && (type
& N_TYPE
) != N_SETA
)
5016 case discard_sec_merge
:
5019 if ((type
& N_STAB
) == 0
5020 && bfd_is_local_label_name (input_bfd
, name
))
5034 /* An N_BINCL symbol indicates the start of the stabs
5035 entries for a header file. We need to scan ahead to the
5036 next N_EINCL symbol, ignoring nesting, adding up all the
5037 characters in the symbol names, not including the file
5038 numbers in types (the first number after an open
5040 if (type
== (int) N_BINCL
)
5042 struct external_nlist
*incl_sym
;
5044 struct aout_link_includes_entry
*incl_entry
;
5045 struct aout_link_includes_totals
*t
;
5049 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
5053 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5054 if (incl_type
== (int) N_EINCL
)
5060 else if (incl_type
== (int) N_BINCL
)
5066 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
5067 for (; *s
!= '\0'; s
++)
5072 /* Skip the file number. */
5074 while (ISDIGIT (*s
))
5082 /* If we have already included a header file with the
5083 same value, then replace this one with an N_EXCL
5085 copy
= (bfd_boolean
) (! finfo
->info
->keep_memory
);
5086 incl_entry
= aout_link_includes_lookup (&finfo
->includes
,
5088 if (incl_entry
== NULL
)
5090 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
5091 if (t
->total
== val
)
5095 /* This is the first time we have seen this header
5096 file with this set of stabs strings. */
5097 t
= bfd_hash_allocate (&finfo
->includes
.root
,
5102 t
->next
= incl_entry
->totals
;
5103 incl_entry
->totals
= t
;
5109 /* This is a duplicate header file. We must change
5110 it to be an N_EXCL entry, and mark all the
5111 included symbols to prevent outputting them. */
5112 type
= (int) N_EXCL
;
5115 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
5117 incl_sym
++, incl_map
++)
5121 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5122 if (incl_type
== (int) N_EINCL
)
5131 else if (incl_type
== (int) N_BINCL
)
5140 /* Copy this symbol into the list of symbols we are going to
5142 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
5143 H_PUT_8 (output_bfd
, H_GET_8 (input_bfd
, sym
->e_other
), outsym
->e_other
);
5144 H_PUT_16 (output_bfd
, H_GET_16 (input_bfd
, sym
->e_desc
), outsym
->e_desc
);
5146 if (! finfo
->info
->keep_memory
)
5148 /* name points into a string table which we are going to
5149 free. If there is a hash table entry, use that string.
5150 Otherwise, copy name into memory. */
5152 name
= h
->root
.root
.string
;
5156 strtab_index
= add_to_stringtab (output_bfd
, finfo
->strtab
,
5158 if (strtab_index
== (bfd_size_type
) -1)
5160 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
5161 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
5162 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
5163 ++obj_aout_external_sym_count (output_bfd
);
5167 /* Write out the output symbols we have just constructed. */
5168 if (outsym
> finfo
->output_syms
)
5170 bfd_size_type outsym_size
;
5172 if (bfd_seek (output_bfd
, finfo
->symoff
, SEEK_SET
) != 0)
5174 outsym_size
= outsym
- finfo
->output_syms
;
5175 outsym_size
*= EXTERNAL_NLIST_SIZE
;
5176 if (bfd_bwrite ((void *) finfo
->output_syms
, outsym_size
, output_bfd
)
5179 finfo
->symoff
+= outsym_size
;
5185 /* Link an a.out input BFD into the output file. */
5188 aout_link_input_bfd (struct aout_final_link_info
*finfo
, bfd
*input_bfd
)
5190 bfd_size_type sym_count
;
5192 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
5194 /* If this is a dynamic object, it may need special handling. */
5195 if ((input_bfd
->flags
& DYNAMIC
) != 0
5196 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
5197 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
5198 (finfo
->info
, input_bfd
));
5200 /* Get the symbols. We probably have them already, unless
5201 finfo->info->keep_memory is FALSE. */
5202 if (! aout_get_external_symbols (input_bfd
))
5205 sym_count
= obj_aout_external_sym_count (input_bfd
);
5207 /* Write out the symbols and get a map of the new indices. The map
5208 is placed into finfo->symbol_map. */
5209 if (! aout_link_write_symbols (finfo
, input_bfd
))
5212 /* Relocate and write out the sections. These functions use the
5213 symbol map created by aout_link_write_symbols. The linker_mark
5214 field will be set if these sections are to be included in the
5215 link, which will normally be the case. */
5216 if (obj_textsec (input_bfd
)->linker_mark
)
5218 if (! aout_link_input_section (finfo
, input_bfd
,
5219 obj_textsec (input_bfd
),
5221 exec_hdr (input_bfd
)->a_trsize
))
5224 if (obj_datasec (input_bfd
)->linker_mark
)
5226 if (! aout_link_input_section (finfo
, input_bfd
,
5227 obj_datasec (input_bfd
),
5229 exec_hdr (input_bfd
)->a_drsize
))
5233 /* If we are not keeping memory, we don't need the symbols any
5234 longer. We still need them if we are keeping memory, because the
5235 strings in the hash table point into them. */
5236 if (! finfo
->info
->keep_memory
)
5238 if (! aout_link_free_symbols (input_bfd
))
5245 /* Do the final link step. This is called on the output BFD. The
5246 INFO structure should point to a list of BFDs linked through the
5247 link_next field which can be used to find each BFD which takes part
5248 in the output. Also, each section in ABFD should point to a list
5249 of bfd_link_order structures which list all the input sections for
5250 the output section. */
5253 NAME (aout
, final_link
) (bfd
*abfd
,
5254 struct bfd_link_info
*info
,
5255 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
5257 struct aout_final_link_info aout_info
;
5258 bfd_boolean includes_hash_initialized
= FALSE
;
5260 bfd_size_type trsize
, drsize
;
5261 bfd_size_type max_contents_size
;
5262 bfd_size_type max_relocs_size
;
5263 bfd_size_type max_sym_count
;
5264 bfd_size_type text_size
;
5266 struct bfd_link_order
*p
;
5268 bfd_boolean have_link_order_relocs
;
5271 abfd
->flags
|= DYNAMIC
;
5273 aout_info
.info
= info
;
5274 aout_info
.output_bfd
= abfd
;
5275 aout_info
.contents
= NULL
;
5276 aout_info
.relocs
= NULL
;
5277 aout_info
.symbol_map
= NULL
;
5278 aout_info
.output_syms
= NULL
;
5280 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
5281 aout_link_includes_newfunc
,
5282 sizeof (struct aout_link_includes_entry
),
5285 includes_hash_initialized
= TRUE
;
5287 /* Figure out the largest section size. Also, if generating
5288 relocatable output, count the relocs. */
5291 max_contents_size
= 0;
5292 max_relocs_size
= 0;
5294 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
5298 if (info
->relocatable
)
5300 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5302 trsize
+= exec_hdr (sub
)->a_trsize
;
5303 drsize
+= exec_hdr (sub
)->a_drsize
;
5307 /* FIXME: We need to identify the .text and .data sections
5308 and call get_reloc_upper_bound and canonicalize_reloc to
5309 work out the number of relocs needed, and then multiply
5310 by the reloc size. */
5311 (*_bfd_error_handler
)
5312 (_("%s: relocatable link from %s to %s not supported"),
5313 bfd_get_filename (abfd
),
5314 sub
->xvec
->name
, abfd
->xvec
->name
);
5315 bfd_set_error (bfd_error_invalid_operation
);
5320 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5322 sz
= obj_textsec (sub
)->size
;
5323 if (sz
> max_contents_size
)
5324 max_contents_size
= sz
;
5325 sz
= obj_datasec (sub
)->size
;
5326 if (sz
> max_contents_size
)
5327 max_contents_size
= sz
;
5329 sz
= exec_hdr (sub
)->a_trsize
;
5330 if (sz
> max_relocs_size
)
5331 max_relocs_size
= sz
;
5332 sz
= exec_hdr (sub
)->a_drsize
;
5333 if (sz
> max_relocs_size
)
5334 max_relocs_size
= sz
;
5336 sz
= obj_aout_external_sym_count (sub
);
5337 if (sz
> max_sym_count
)
5342 if (info
->relocatable
)
5344 if (obj_textsec (abfd
) != NULL
)
5345 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
5346 ->map_head
.link_order
)
5347 * obj_reloc_entry_size (abfd
));
5348 if (obj_datasec (abfd
) != NULL
)
5349 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
5350 ->map_head
.link_order
)
5351 * obj_reloc_entry_size (abfd
));
5354 exec_hdr (abfd
)->a_trsize
= trsize
;
5355 exec_hdr (abfd
)->a_drsize
= drsize
;
5357 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
5359 /* Adjust the section sizes and vmas according to the magic number.
5360 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5361 filepos for each section. */
5362 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
5365 /* The relocation and symbol file positions differ among a.out
5366 targets. We are passed a callback routine from the backend
5367 specific code to handle this.
5368 FIXME: At this point we do not know how much space the symbol
5369 table will require. This will not work for any (nonstandard)
5370 a.out target that needs to know the symbol table size before it
5371 can compute the relocation file positions. This may or may not
5372 be the case for the hp300hpux target, for example. */
5373 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
5375 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
5376 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
5377 obj_sym_filepos (abfd
) = aout_info
.symoff
;
5379 /* We keep a count of the symbols as we output them. */
5380 obj_aout_external_sym_count (abfd
) = 0;
5382 /* We accumulate the string table as we write out the symbols. */
5383 aout_info
.strtab
= _bfd_stringtab_init ();
5384 if (aout_info
.strtab
== NULL
)
5387 /* Allocate buffers to hold section contents and relocs. */
5388 aout_info
.contents
= bfd_malloc (max_contents_size
);
5389 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
5390 aout_info
.symbol_map
= bfd_malloc (max_sym_count
* sizeof (int *));
5391 aout_info
.output_syms
= bfd_malloc ((max_sym_count
+ 1)
5392 * sizeof (struct external_nlist
));
5393 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
5394 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
5395 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
5396 || aout_info
.output_syms
== NULL
)
5399 /* If we have a symbol named __DYNAMIC, force it out now. This is
5400 required by SunOS. Doing this here rather than in sunos.c is a
5401 hack, but it's easier than exporting everything which would be
5404 struct aout_link_hash_entry
*h
;
5406 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
5407 FALSE
, FALSE
, FALSE
);
5409 aout_link_write_other_symbol (h
, &aout_info
);
5412 /* The most time efficient way to do the link would be to read all
5413 the input object files into memory and then sort out the
5414 information into the output file. Unfortunately, that will
5415 probably use too much memory. Another method would be to step
5416 through everything that composes the text section and write it
5417 out, and then everything that composes the data section and write
5418 it out, and then write out the relocs, and then write out the
5419 symbols. Unfortunately, that requires reading stuff from each
5420 input file several times, and we will not be able to keep all the
5421 input files open simultaneously, and reopening them will be slow.
5423 What we do is basically process one input file at a time. We do
5424 everything we need to do with an input file once--copy over the
5425 section contents, handle the relocation information, and write
5426 out the symbols--and then we throw away the information we read
5427 from it. This approach requires a lot of lseeks of the output
5428 file, which is unfortunate but still faster than reopening a lot
5431 We use the output_has_begun field of the input BFDs to see
5432 whether we have already handled it. */
5433 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
5434 sub
->output_has_begun
= FALSE
;
5436 /* Mark all sections which are to be included in the link. This
5437 will normally be every section. We need to do this so that we
5438 can identify any sections which the linker has decided to not
5440 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5442 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5443 if (p
->type
== bfd_indirect_link_order
)
5444 p
->u
.indirect
.section
->linker_mark
= TRUE
;
5447 have_link_order_relocs
= FALSE
;
5448 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5450 for (p
= o
->map_head
.link_order
;
5454 if (p
->type
== bfd_indirect_link_order
5455 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
5456 == bfd_target_aout_flavour
))
5460 input_bfd
= p
->u
.indirect
.section
->owner
;
5461 if (! input_bfd
->output_has_begun
)
5463 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
5465 input_bfd
->output_has_begun
= TRUE
;
5468 else if (p
->type
== bfd_section_reloc_link_order
5469 || p
->type
== bfd_symbol_reloc_link_order
)
5471 /* These are handled below. */
5472 have_link_order_relocs
= TRUE
;
5476 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
5482 /* Write out any symbols that we have not already written out. */
5483 aout_link_hash_traverse (aout_hash_table (info
),
5484 aout_link_write_other_symbol
,
5485 (void *) &aout_info
);
5487 /* Now handle any relocs we were asked to create by the linker.
5488 These did not come from any input file. We must do these after
5489 we have written out all the symbols, so that we know the symbol
5491 if (have_link_order_relocs
)
5493 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5495 for (p
= o
->map_head
.link_order
;
5499 if (p
->type
== bfd_section_reloc_link_order
5500 || p
->type
== bfd_symbol_reloc_link_order
)
5502 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
5509 if (aout_info
.contents
!= NULL
)
5511 free (aout_info
.contents
);
5512 aout_info
.contents
= NULL
;
5514 if (aout_info
.relocs
!= NULL
)
5516 free (aout_info
.relocs
);
5517 aout_info
.relocs
= NULL
;
5519 if (aout_info
.symbol_map
!= NULL
)
5521 free (aout_info
.symbol_map
);
5522 aout_info
.symbol_map
= NULL
;
5524 if (aout_info
.output_syms
!= NULL
)
5526 free (aout_info
.output_syms
);
5527 aout_info
.output_syms
= NULL
;
5529 if (includes_hash_initialized
)
5531 bfd_hash_table_free (&aout_info
.includes
.root
);
5532 includes_hash_initialized
= FALSE
;
5535 /* Finish up any dynamic linking we may be doing. */
5536 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
5538 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
5542 /* Update the header information. */
5543 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
5544 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
5545 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
5546 obj_textsec (abfd
)->reloc_count
=
5547 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
5548 obj_datasec (abfd
)->reloc_count
=
5549 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
5551 /* Write out the string table, unless there are no symbols. */
5552 if (abfd
->symcount
> 0)
5554 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
5555 || ! emit_stringtab (abfd
, aout_info
.strtab
))
5558 else if (obj_textsec (abfd
)->reloc_count
== 0
5559 && obj_datasec (abfd
)->reloc_count
== 0)
5565 pos
= obj_datasec (abfd
)->filepos
+ exec_hdr (abfd
)->a_data
- 1;
5566 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
5567 || bfd_bwrite (&b
, (bfd_size_type
) 1, abfd
) != 1)
5574 if (aout_info
.contents
!= NULL
)
5575 free (aout_info
.contents
);
5576 if (aout_info
.relocs
!= NULL
)
5577 free (aout_info
.relocs
);
5578 if (aout_info
.symbol_map
!= NULL
)
5579 free (aout_info
.symbol_map
);
5580 if (aout_info
.output_syms
!= NULL
)
5581 free (aout_info
.output_syms
);
5582 if (includes_hash_initialized
)
5583 bfd_hash_table_free (&aout_info
.includes
.root
);