1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright (C) 1990-2020 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
28 BFD supports a number of different flavours of a.out format,
29 though the major differences are only the sizes of the
30 structures on disk, and the shape of the relocation
33 The support is split into a basic support file @file{aoutx.h}
34 and other files which derive functions from the base. One
35 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
36 adds to the basic a.out functions support for sun3, sun4, and
37 386 a.out files, to create a target jump vector for a specific
40 This information is further split out into more specific files
41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 and @file{demo64.c} for a demonstration of a 64 bit a.out format.
44 The base file @file{aoutx.h} defines general mechanisms for
45 reading and writing records to and from disk and various
46 other methods which BFD requires. It is included by
47 @file{aout32.c} and @file{aout64.c} to form the names
48 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
50 As an example, this is what goes on to make the back end for a
51 sun4, from @file{aout32.c}:
53 | #define ARCH_SIZE 32
59 | aout_32_canonicalize_reloc
60 | aout_32_find_nearest_line
62 | aout_32_get_reloc_upper_bound
67 | #define TARGET_NAME "a.out-sunos-big"
68 | #define VECNAME sparc_aout_sunos_be_vec
71 requires all the names from @file{aout32.c}, and produces the jump vector
73 | sparc_aout_sunos_be_vec
75 The file @file{host-aout.c} is a special case. It is for a large set
76 of hosts that use ``more or less standard'' a.out files, and
77 for which cross-debugging is not interesting. It uses the
78 standard 32-bit a.out support routines, but determines the
79 file offsets and addresses of the text, data, and BSS
80 sections, the machine architecture and machine type, and the
81 entry point address, in a host-dependent manner. Once these
82 values have been determined, generic code is used to handle
85 When porting it to run on a new system, you must supply:
89 | HOST_MACHINE_ARCH (optional)
90 | HOST_MACHINE_MACHINE (optional)
91 | HOST_TEXT_START_ADDR
94 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
95 values, plus the structures and macros defined in @file{a.out.h} on
96 your host system, will produce a BFD target that will access
97 ordinary a.out files on your host. To configure a new machine
98 to use @file{host-aout.c}, specify:
100 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
101 | TDEPFILES= host-aout.o trad-core.o
103 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac}
105 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
106 configuration is selected. */
109 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
110 Doesn't matter what the setting of WP_TEXT is on output, but it'll
112 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
113 * Any BFD with both flags clear is OMAGIC.
114 (Just want to make these explicit, so the conditions tested in this
115 file make sense if you're more familiar with a.out than with BFD.) */
117 #define KEEPIT udata.i
122 #include "safe-ctype.h"
127 #include "aout/aout64.h"
128 #include "aout/stab_gnu.h"
136 The file @file{aoutx.h} provides for both the @emph{standard}
137 and @emph{extended} forms of a.out relocation records.
139 The standard records contain only an address, a symbol index,
140 and a type field. The extended records also have a full
141 integer for an addend. */
143 #ifndef CTOR_TABLE_RELOC_HOWTO
144 #define CTOR_TABLE_RELOC_IDX 2
145 #define CTOR_TABLE_RELOC_HOWTO(BFD) \
146 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
147 ? howto_table_ext : howto_table_std) \
148 + CTOR_TABLE_RELOC_IDX)
151 #ifndef MY_swap_std_reloc_in
152 #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
155 #ifndef MY_swap_ext_reloc_in
156 #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
159 #ifndef MY_swap_std_reloc_out
160 #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
163 #ifndef MY_swap_ext_reloc_out
164 #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
167 #ifndef MY_final_link_relocate
168 #define MY_final_link_relocate _bfd_final_link_relocate
171 #ifndef MY_relocate_contents
172 #define MY_relocate_contents _bfd_relocate_contents
175 #define howto_table_ext NAME (aout, ext_howto_table)
176 #define howto_table_std NAME (aout, std_howto_table)
178 reloc_howto_type howto_table_ext
[] =
180 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
181 HOWTO (RELOC_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
, 0, "8", FALSE
, 0, 0x000000ff, FALSE
),
182 HOWTO (RELOC_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
, 0, "16", FALSE
, 0, 0x0000ffff, FALSE
),
183 HOWTO (RELOC_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "32", FALSE
, 0, 0xffffffff, FALSE
),
184 HOWTO (RELOC_DISP8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0, "DISP8", FALSE
, 0, 0x000000ff, FALSE
),
185 HOWTO (RELOC_DISP16
, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0, "DISP16", FALSE
, 0, 0x0000ffff, FALSE
),
186 HOWTO (RELOC_DISP32
, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0, "DISP32", FALSE
, 0, 0xffffffff, FALSE
),
187 HOWTO (RELOC_WDISP30
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "WDISP30", FALSE
, 0, 0x3fffffff, FALSE
),
188 HOWTO (RELOC_WDISP22
, 2, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "WDISP22", FALSE
, 0, 0x003fffff, FALSE
),
189 HOWTO (RELOC_HI22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "HI22", FALSE
, 0, 0x003fffff, FALSE
),
190 HOWTO (RELOC_22
, 0, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "22", FALSE
, 0, 0x003fffff, FALSE
),
191 HOWTO (RELOC_13
, 0, 2, 13, FALSE
, 0, complain_overflow_bitfield
, 0, "13", FALSE
, 0, 0x00001fff, FALSE
),
192 HOWTO (RELOC_LO10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "LO10", FALSE
, 0, 0x000003ff, FALSE
),
193 HOWTO (RELOC_SFA_BASE
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_BASE", FALSE
, 0, 0xffffffff, FALSE
),
194 HOWTO (RELOC_SFA_OFF13
,0, 2, 32, FALSE
, 0, complain_overflow_bitfield
, 0, "SFA_OFF13", FALSE
, 0, 0xffffffff, FALSE
),
195 HOWTO (RELOC_BASE10
, 0, 2, 10, FALSE
, 0, complain_overflow_dont
, 0, "BASE10", FALSE
, 0, 0x000003ff, FALSE
),
196 HOWTO (RELOC_BASE13
, 0, 2, 13, FALSE
, 0, complain_overflow_signed
, 0, "BASE13", FALSE
, 0, 0x00001fff, FALSE
),
197 HOWTO (RELOC_BASE22
, 10, 2, 22, FALSE
, 0, complain_overflow_bitfield
, 0, "BASE22", FALSE
, 0, 0x003fffff, FALSE
),
198 HOWTO (RELOC_PC10
, 0, 2, 10, TRUE
, 0, complain_overflow_dont
, 0, "PC10", FALSE
, 0, 0x000003ff, TRUE
),
199 HOWTO (RELOC_PC22
, 10, 2, 22, TRUE
, 0, complain_overflow_signed
, 0, "PC22", FALSE
, 0, 0x003fffff, TRUE
),
200 HOWTO (RELOC_JMP_TBL
, 2, 2, 30, TRUE
, 0, complain_overflow_signed
, 0, "JMP_TBL", FALSE
, 0, 0x3fffffff, FALSE
),
201 HOWTO (RELOC_SEGOFF16
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "SEGOFF16", FALSE
, 0, 0x00000000, FALSE
),
202 HOWTO (RELOC_GLOB_DAT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "GLOB_DAT", FALSE
, 0, 0x00000000, FALSE
),
203 HOWTO (RELOC_JMP_SLOT
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "JMP_SLOT", FALSE
, 0, 0x00000000, FALSE
),
204 HOWTO (RELOC_RELATIVE
,0, 2, 0, FALSE
, 0, complain_overflow_bitfield
, 0, "RELATIVE", FALSE
, 0, 0x00000000, FALSE
),
205 HOWTO (0, 0, 3, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
206 HOWTO (0, 0, 3, 0, FALSE
, 0, complain_overflow_dont
, 0, "R_SPARC_NONE",FALSE
, 0, 0x00000000, TRUE
),
207 #define RELOC_SPARC_REV32 RELOC_WDISP19
208 HOWTO (RELOC_SPARC_REV32
, 0, 2, 32, FALSE
, 0, complain_overflow_dont
, 0,"R_SPARC_REV32",FALSE
, 0, 0xffffffff, FALSE
),
211 /* Convert standard reloc records to "arelent" format (incl byte swap). */
213 reloc_howto_type howto_table_std
[] =
215 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
216 HOWTO ( 0, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,0,"8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
217 HOWTO ( 1, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
218 HOWTO ( 2, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
219 HOWTO ( 3, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,0,"64", TRUE
, 0xdeaddead,0xdeaddead, FALSE
),
220 HOWTO ( 4, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, 0,"DISP8", TRUE
, 0x000000ff,0x000000ff, FALSE
),
221 HOWTO ( 5, 0, 1, 16, TRUE
, 0, complain_overflow_signed
, 0,"DISP16", TRUE
, 0x0000ffff,0x0000ffff, FALSE
),
222 HOWTO ( 6, 0, 2, 32, TRUE
, 0, complain_overflow_signed
, 0,"DISP32", TRUE
, 0xffffffff,0xffffffff, FALSE
),
223 HOWTO ( 7, 0, 4, 64, TRUE
, 0, complain_overflow_signed
, 0,"DISP64", TRUE
, 0xfeedface,0xfeedface, FALSE
),
224 HOWTO ( 8, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"GOT_REL", FALSE
, 0,0x00000000, FALSE
),
225 HOWTO ( 9, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,0,"BASE16", FALSE
,0xffffffff,0xffffffff, FALSE
),
226 HOWTO (10, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,0,"BASE32", FALSE
,0xffffffff,0xffffffff, FALSE
),
232 HOWTO (16, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"JMP_TABLE", FALSE
, 0,0x00000000, FALSE
),
248 HOWTO (32, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"RELATIVE", FALSE
, 0,0x00000000, FALSE
),
256 HOWTO (40, 0, 2, 0, FALSE
, 0, complain_overflow_bitfield
,0,"BASEREL", FALSE
, 0,0x00000000, FALSE
),
259 #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
262 NAME (aout
, reloc_type_lookup
) (bfd
*abfd
, bfd_reloc_code_real_type code
)
264 #define EXT(i, j) case i: return & howto_table_ext [j]
265 #define STD(i, j) case i: return & howto_table_std [j]
266 int ext
= obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
;
268 if (code
== BFD_RELOC_CTOR
)
269 switch (bfd_arch_bits_per_address (abfd
))
282 EXT (BFD_RELOC_8
, 0);
283 EXT (BFD_RELOC_16
, 1);
284 EXT (BFD_RELOC_32
, 2);
285 EXT (BFD_RELOC_HI22
, 8);
286 EXT (BFD_RELOC_LO10
, 11);
287 EXT (BFD_RELOC_32_PCREL_S2
, 6);
288 EXT (BFD_RELOC_SPARC_WDISP22
, 7);
289 EXT (BFD_RELOC_SPARC13
, 10);
290 EXT (BFD_RELOC_SPARC_GOT10
, 14);
291 EXT (BFD_RELOC_SPARC_BASE13
, 15);
292 EXT (BFD_RELOC_SPARC_GOT13
, 15);
293 EXT (BFD_RELOC_SPARC_GOT22
, 16);
294 EXT (BFD_RELOC_SPARC_PC10
, 17);
295 EXT (BFD_RELOC_SPARC_PC22
, 18);
296 EXT (BFD_RELOC_SPARC_WPLT30
, 19);
297 EXT (BFD_RELOC_SPARC_REV32
, 26);
305 STD (BFD_RELOC_8
, 0);
306 STD (BFD_RELOC_16
, 1);
307 STD (BFD_RELOC_32
, 2);
308 STD (BFD_RELOC_8_PCREL
, 4);
309 STD (BFD_RELOC_16_PCREL
, 5);
310 STD (BFD_RELOC_32_PCREL
, 6);
311 STD (BFD_RELOC_16_BASEREL
, 9);
312 STD (BFD_RELOC_32_BASEREL
, 10);
319 NAME (aout
, reloc_name_lookup
) (bfd
*abfd
, const char *r_name
)
321 unsigned int i
, size
;
322 reloc_howto_type
*howto_table
;
324 if (obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
)
326 howto_table
= howto_table_ext
;
327 size
= sizeof (howto_table_ext
) / sizeof (howto_table_ext
[0]);
331 howto_table
= howto_table_std
;
332 size
= sizeof (howto_table_std
) / sizeof (howto_table_std
[0]);
335 for (i
= 0; i
< size
; i
++)
336 if (howto_table
[i
].name
!= NULL
337 && strcasecmp (howto_table
[i
].name
, r_name
) == 0)
338 return &howto_table
[i
];
345 Internal entry points
348 @file{aoutx.h} exports several routines for accessing the
349 contents of an a.out file, which are gathered and exported in
350 turn by various format specific files (eg sunos.c).
355 aout_@var{size}_swap_exec_header_in
358 void aout_@var{size}_swap_exec_header_in,
360 struct external_exec *bytes,
361 struct internal_exec *execp);
364 Swap the information in an executable header @var{raw_bytes} taken
365 from a raw byte stream memory image into the internal exec header
366 structure @var{execp}.
369 #ifndef NAME_swap_exec_header_in
371 NAME (aout
, swap_exec_header_in
) (bfd
*abfd
,
372 struct external_exec
*bytes
,
373 struct internal_exec
*execp
)
375 /* The internal_exec structure has some fields that are unused in this
376 configuration (IE for i960), so ensure that all such uninitialized
377 fields are zero'd out. There are places where two of these structs
378 are memcmp'd, and thus the contents do matter. */
379 memset ((void *) execp
, 0, sizeof (struct internal_exec
));
380 /* Now fill in fields in the execp, from the bytes in the raw data. */
381 execp
->a_info
= H_GET_32 (abfd
, bytes
->e_info
);
382 execp
->a_text
= GET_WORD (abfd
, bytes
->e_text
);
383 execp
->a_data
= GET_WORD (abfd
, bytes
->e_data
);
384 execp
->a_bss
= GET_WORD (abfd
, bytes
->e_bss
);
385 execp
->a_syms
= GET_WORD (abfd
, bytes
->e_syms
);
386 execp
->a_entry
= GET_WORD (abfd
, bytes
->e_entry
);
387 execp
->a_trsize
= GET_WORD (abfd
, bytes
->e_trsize
);
388 execp
->a_drsize
= GET_WORD (abfd
, bytes
->e_drsize
);
390 #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
395 aout_@var{size}_swap_exec_header_out
398 void aout_@var{size}_swap_exec_header_out
400 struct internal_exec *execp,
401 struct external_exec *raw_bytes);
404 Swap the information in an internal exec header structure
405 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
408 NAME (aout
, swap_exec_header_out
) (bfd
*abfd
,
409 struct internal_exec
*execp
,
410 struct external_exec
*bytes
)
412 /* Now fill in fields in the raw data, from the fields in the exec struct. */
413 H_PUT_32 (abfd
, execp
->a_info
, bytes
->e_info
);
414 PUT_WORD (abfd
, execp
->a_text
, bytes
->e_text
);
415 PUT_WORD (abfd
, execp
->a_data
, bytes
->e_data
);
416 PUT_WORD (abfd
, execp
->a_bss
, bytes
->e_bss
);
417 PUT_WORD (abfd
, execp
->a_syms
, bytes
->e_syms
);
418 PUT_WORD (abfd
, execp
->a_entry
, bytes
->e_entry
);
419 PUT_WORD (abfd
, execp
->a_trsize
, bytes
->e_trsize
);
420 PUT_WORD (abfd
, execp
->a_drsize
, bytes
->e_drsize
);
423 /* Make all the section for an a.out file. */
426 NAME (aout
, make_sections
) (bfd
*abfd
)
428 if (obj_textsec (abfd
) == NULL
&& bfd_make_section (abfd
, ".text") == NULL
)
430 if (obj_datasec (abfd
) == NULL
&& bfd_make_section (abfd
, ".data") == NULL
)
432 if (obj_bsssec (abfd
) == NULL
&& bfd_make_section (abfd
, ".bss") == NULL
)
439 aout_@var{size}_some_aout_object_p
442 const bfd_target *aout_@var{size}_some_aout_object_p
444 struct internal_exec *execp,
445 const bfd_target *(*callback_to_real_object_p) (bfd *));
448 Some a.out variant thinks that the file open in @var{abfd}
449 checking is an a.out file. Do some more checking, and set up
450 for access if it really is. Call back to the calling
451 environment's "finish up" function just before returning, to
452 handle any last-minute setup.
456 NAME (aout
, some_aout_object_p
) (bfd
*abfd
,
457 struct internal_exec
*execp
,
458 const bfd_target
*(*callback_to_real_object_p
) (bfd
*))
460 struct aout_data_struct
*rawptr
, *oldrawptr
;
461 const bfd_target
*result
;
462 size_t amt
= sizeof (* rawptr
);
464 rawptr
= (struct aout_data_struct
*) bfd_zalloc (abfd
, amt
);
468 oldrawptr
= abfd
->tdata
.aout_data
;
469 abfd
->tdata
.aout_data
= rawptr
;
471 /* Copy the contents of the old tdata struct. */
472 if (oldrawptr
!= NULL
)
473 *abfd
->tdata
.aout_data
= *oldrawptr
;
475 abfd
->tdata
.aout_data
->a
.hdr
= &rawptr
->e
;
476 /* Copy in the internal_exec struct. */
477 *(abfd
->tdata
.aout_data
->a
.hdr
) = *execp
;
478 execp
= abfd
->tdata
.aout_data
->a
.hdr
;
480 /* Set the file flags. */
481 abfd
->flags
= BFD_NO_FLAGS
;
482 if (execp
->a_drsize
|| execp
->a_trsize
)
483 abfd
->flags
|= HAS_RELOC
;
484 /* Setting of EXEC_P has been deferred to the bottom of this function. */
486 abfd
->flags
|= HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
;
487 if (N_DYNAMIC (execp
))
488 abfd
->flags
|= DYNAMIC
;
490 if (N_MAGIC (execp
) == ZMAGIC
)
492 abfd
->flags
|= D_PAGED
| WP_TEXT
;
493 adata (abfd
).magic
= z_magic
;
495 else if (N_MAGIC (execp
) == QMAGIC
)
497 abfd
->flags
|= D_PAGED
| WP_TEXT
;
498 adata (abfd
).magic
= z_magic
;
499 adata (abfd
).subformat
= q_magic_format
;
501 else if (N_MAGIC (execp
) == NMAGIC
)
503 abfd
->flags
|= WP_TEXT
;
504 adata (abfd
).magic
= n_magic
;
506 else if (N_MAGIC (execp
) == OMAGIC
507 || N_MAGIC (execp
) == BMAGIC
)
508 adata (abfd
).magic
= o_magic
;
510 /* Should have been checked with N_BADMAG before this routine
514 abfd
->start_address
= execp
->a_entry
;
516 obj_aout_symbols (abfd
) = NULL
;
517 abfd
->symcount
= execp
->a_syms
/ sizeof (struct external_nlist
);
519 /* The default relocation entry size is that of traditional V7 Unix. */
520 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
522 /* The default symbol entry size is that of traditional Unix. */
523 obj_symbol_entry_size (abfd
) = EXTERNAL_NLIST_SIZE
;
526 bfd_init_window (&obj_aout_sym_window (abfd
));
527 bfd_init_window (&obj_aout_string_window (abfd
));
529 obj_aout_external_syms (abfd
) = NULL
;
530 obj_aout_external_strings (abfd
) = NULL
;
531 obj_aout_sym_hashes (abfd
) = NULL
;
533 if (! NAME (aout
, make_sections
) (abfd
))
536 obj_datasec (abfd
)->size
= execp
->a_data
;
537 obj_bsssec (abfd
)->size
= execp
->a_bss
;
539 obj_textsec (abfd
)->flags
=
540 (execp
->a_trsize
!= 0
541 ? (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_RELOC
)
542 : (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
));
543 obj_datasec (abfd
)->flags
=
544 (execp
->a_drsize
!= 0
545 ? (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
| SEC_RELOC
)
546 : (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
));
547 obj_bsssec (abfd
)->flags
= SEC_ALLOC
;
549 #ifdef THIS_IS_ONLY_DOCUMENTATION
550 /* The common code can't fill in these things because they depend
551 on either the start address of the text segment, the rounding
552 up of virtual addresses between segments, or the starting file
553 position of the text segment -- all of which varies among different
554 versions of a.out. */
556 /* Call back to the format-dependent code to fill in the rest of the
557 fields and do any further cleanup. Things that should be filled
558 in by the callback: */
560 struct exec
*execp
= exec_hdr (abfd
);
562 obj_textsec (abfd
)->size
= N_TXTSIZE (execp
);
563 /* Data and bss are already filled in since they're so standard. */
565 /* The virtual memory addresses of the sections. */
566 obj_textsec (abfd
)->vma
= N_TXTADDR (execp
);
567 obj_datasec (abfd
)->vma
= N_DATADDR (execp
);
568 obj_bsssec (abfd
)->vma
= N_BSSADDR (execp
);
570 /* The file offsets of the sections. */
571 obj_textsec (abfd
)->filepos
= N_TXTOFF (execp
);
572 obj_datasec (abfd
)->filepos
= N_DATOFF (execp
);
574 /* The file offsets of the relocation info. */
575 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF (execp
);
576 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF (execp
);
578 /* The file offsets of the string table and symbol table. */
579 obj_str_filepos (abfd
) = N_STROFF (execp
);
580 obj_sym_filepos (abfd
) = N_SYMOFF (execp
);
582 /* Determine the architecture and machine type of the object file. */
583 switch (N_MACHTYPE (exec_hdr (abfd
)))
586 abfd
->obj_arch
= bfd_arch_obscure
;
590 adata (abfd
)->page_size
= TARGET_PAGE_SIZE
;
591 adata (abfd
)->segment_size
= SEGMENT_SIZE
;
592 adata (abfd
)->exec_bytes_size
= EXEC_BYTES_SIZE
;
596 /* The architecture is encoded in various ways in various a.out variants,
597 or is not encoded at all in some of them. The relocation size depends
598 on the architecture and the a.out variant. Finally, the return value
599 is the bfd_target vector in use. If an error occurs, return zero and
600 set bfd_error to the appropriate error code.
602 Formats such as b.out, which have additional fields in the a.out
603 header, should cope with them in this callback as well. */
604 #endif /* DOCUMENTATION */
606 result
= (*callback_to_real_object_p
) (abfd
);
608 /* Now that the segment addresses have been worked out, take a better
609 guess at whether the file is executable. If the entry point
610 is within the text segment, assume it is. (This makes files
611 executable even if their entry point address is 0, as long as
612 their text starts at zero.).
614 This test had to be changed to deal with systems where the text segment
615 runs at a different location than the default. The problem is that the
616 entry address can appear to be outside the text segment, thus causing an
617 erroneous conclusion that the file isn't executable.
619 To fix this, we now accept any non-zero entry point as an indication of
620 executability. This will work most of the time, since only the linker
621 sets the entry point, and that is likely to be non-zero for most systems. */
623 if (execp
->a_entry
!= 0
624 || (execp
->a_entry
>= obj_textsec (abfd
)->vma
625 && execp
->a_entry
< (obj_textsec (abfd
)->vma
626 + obj_textsec (abfd
)->size
)
627 && execp
->a_trsize
== 0
628 && execp
->a_drsize
== 0))
629 abfd
->flags
|= EXEC_P
;
633 struct stat stat_buf
;
635 /* The original heuristic doesn't work in some important cases.
636 The a.out file has no information about the text start
637 address. For files (like kernels) linked to non-standard
638 addresses (ld -Ttext nnn) the entry point may not be between
639 the default text start (obj_textsec(abfd)->vma) and
640 (obj_textsec(abfd)->vma) + text size. This is not just a mach
641 issue. Many kernels are loaded at non standard addresses. */
642 if (abfd
->iostream
!= NULL
643 && (abfd
->flags
& BFD_IN_MEMORY
) == 0
644 && (fstat (fileno ((FILE *) (abfd
->iostream
)), &stat_buf
) == 0)
645 && ((stat_buf
.st_mode
& 0111) != 0))
646 abfd
->flags
|= EXEC_P
;
648 #endif /* STAT_FOR_EXEC */
654 bfd_release (abfd
, rawptr
);
655 abfd
->tdata
.aout_data
= oldrawptr
;
661 aout_@var{size}_mkobject
664 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
667 Initialize BFD @var{abfd} for use with a.out files.
671 NAME (aout
, mkobject
) (bfd
*abfd
)
673 struct aout_data_struct
*rawptr
;
674 size_t amt
= sizeof (* rawptr
);
676 bfd_set_error (bfd_error_system_call
);
678 rawptr
= (struct aout_data_struct
*) bfd_zalloc (abfd
, amt
);
682 abfd
->tdata
.aout_data
= rawptr
;
683 exec_hdr (abfd
) = &(rawptr
->e
);
685 obj_textsec (abfd
) = NULL
;
686 obj_datasec (abfd
) = NULL
;
687 obj_bsssec (abfd
) = NULL
;
694 aout_@var{size}_machine_type
697 enum machine_type aout_@var{size}_machine_type
698 (enum bfd_architecture arch,
699 unsigned long machine,
700 bfd_boolean *unknown);
703 Keep track of machine architecture and machine type for
704 a.out's. Return the <<machine_type>> for a particular
705 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
706 and machine can't be represented in a.out format.
708 If the architecture is understood, machine type 0 (default)
709 is always understood.
713 NAME (aout
, machine_type
) (enum bfd_architecture arch
,
714 unsigned long machine
,
715 bfd_boolean
*unknown
)
717 enum machine_type arch_flags
;
719 arch_flags
= M_UNKNOWN
;
726 || machine
== bfd_mach_sparc
727 || machine
== bfd_mach_sparc_sparclite
728 || machine
== bfd_mach_sparc_sparclite_le
729 || machine
== bfd_mach_sparc_v8plus
730 || machine
== bfd_mach_sparc_v8plusa
731 || machine
== bfd_mach_sparc_v8plusb
732 || machine
== bfd_mach_sparc_v8plusc
733 || machine
== bfd_mach_sparc_v8plusd
734 || machine
== bfd_mach_sparc_v8pluse
735 || machine
== bfd_mach_sparc_v8plusv
736 || machine
== bfd_mach_sparc_v8plusm
737 || machine
== bfd_mach_sparc_v8plusm8
738 || machine
== bfd_mach_sparc_v9
739 || machine
== bfd_mach_sparc_v9a
740 || machine
== bfd_mach_sparc_v9b
741 || machine
== bfd_mach_sparc_v9c
742 || machine
== bfd_mach_sparc_v9d
743 || machine
== bfd_mach_sparc_v9e
744 || machine
== bfd_mach_sparc_v9v
745 || machine
== bfd_mach_sparc_v9m
746 || machine
== bfd_mach_sparc_v9m8
)
747 arch_flags
= M_SPARC
;
748 else if (machine
== bfd_mach_sparc_sparclet
)
749 arch_flags
= M_SPARCLET
;
754 || machine
== bfd_mach_i386_i386
755 || machine
== bfd_mach_i386_i386_intel_syntax
)
768 case bfd_mach_mips3000
:
769 case bfd_mach_mips3900
:
770 arch_flags
= M_MIPS1
;
772 case bfd_mach_mips6000
:
773 arch_flags
= M_MIPS2
;
775 case bfd_mach_mips4000
:
776 case bfd_mach_mips4010
:
777 case bfd_mach_mips4100
:
778 case bfd_mach_mips4300
:
779 case bfd_mach_mips4400
:
780 case bfd_mach_mips4600
:
781 case bfd_mach_mips4650
:
782 case bfd_mach_mips8000
:
783 case bfd_mach_mips9000
:
784 case bfd_mach_mips10000
:
785 case bfd_mach_mips12000
:
786 case bfd_mach_mips14000
:
787 case bfd_mach_mips16000
:
788 case bfd_mach_mips16
:
789 case bfd_mach_mipsisa32
:
790 case bfd_mach_mipsisa32r2
:
791 case bfd_mach_mipsisa32r3
:
792 case bfd_mach_mipsisa32r5
:
793 case bfd_mach_mipsisa32r6
:
795 case bfd_mach_mipsisa64
:
796 case bfd_mach_mipsisa64r2
:
797 case bfd_mach_mipsisa64r3
:
798 case bfd_mach_mipsisa64r5
:
799 case bfd_mach_mipsisa64r6
:
800 case bfd_mach_mips_sb1
:
801 case bfd_mach_mips_xlr
:
802 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
803 arch_flags
= M_MIPS2
;
806 arch_flags
= M_UNKNOWN
;
814 case 0: arch_flags
= M_NS32532
; break;
815 case 32032: arch_flags
= M_NS32032
; break;
816 case 32532: arch_flags
= M_NS32532
; break;
817 default: arch_flags
= M_UNKNOWN
; break;
826 if (machine
== 0 || machine
== 255)
831 arch_flags
= M_UNKNOWN
;
834 if (arch_flags
!= M_UNKNOWN
)
842 aout_@var{size}_set_arch_mach
845 bfd_boolean aout_@var{size}_set_arch_mach,
847 enum bfd_architecture arch,
848 unsigned long machine);
851 Set the architecture and the machine of the BFD @var{abfd} to the
852 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
853 can support the architecture required.
857 NAME (aout
, set_arch_mach
) (bfd
*abfd
,
858 enum bfd_architecture arch
,
859 unsigned long machine
)
861 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
864 if (arch
!= bfd_arch_unknown
)
868 NAME (aout
, machine_type
) (arch
, machine
, &unknown
);
873 /* Determine the size of a relocation entry. */
878 obj_reloc_entry_size (abfd
) = RELOC_EXT_SIZE
;
881 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
885 return (*aout_backend_info (abfd
)->set_sizes
) (abfd
);
889 adjust_o_magic (bfd
*abfd
, struct internal_exec
*execp
)
891 file_ptr pos
= adata (abfd
).exec_bytes_size
;
896 obj_textsec (abfd
)->filepos
= pos
;
897 if (!obj_textsec (abfd
)->user_set_vma
)
898 obj_textsec (abfd
)->vma
= vma
;
900 vma
= obj_textsec (abfd
)->vma
;
902 pos
+= obj_textsec (abfd
)->size
;
903 vma
+= obj_textsec (abfd
)->size
;
906 if (!obj_datasec (abfd
)->user_set_vma
)
908 obj_textsec (abfd
)->size
+= pad
;
911 obj_datasec (abfd
)->vma
= vma
;
914 vma
= obj_datasec (abfd
)->vma
;
915 obj_datasec (abfd
)->filepos
= pos
;
916 pos
+= obj_datasec (abfd
)->size
;
917 vma
+= obj_datasec (abfd
)->size
;
920 if (!obj_bsssec (abfd
)->user_set_vma
)
922 obj_datasec (abfd
)->size
+= pad
;
925 obj_bsssec (abfd
)->vma
= vma
;
929 /* The VMA of the .bss section is set by the VMA of the
930 .data section plus the size of the .data section. We may
931 need to add padding bytes to make this true. */
932 pad
= obj_bsssec (abfd
)->vma
- vma
;
935 obj_datasec (abfd
)->size
+= pad
;
939 obj_bsssec (abfd
)->filepos
= pos
;
941 /* Fix up the exec header. */
942 execp
->a_text
= obj_textsec (abfd
)->size
;
943 execp
->a_data
= obj_datasec (abfd
)->size
;
944 execp
->a_bss
= obj_bsssec (abfd
)->size
;
945 N_SET_MAGIC (execp
, OMAGIC
);
949 adjust_z_magic (bfd
*abfd
, struct internal_exec
*execp
)
951 bfd_size_type data_pad
, text_pad
;
953 const struct aout_backend_data
*abdp
;
954 /* TRUE if text includes exec header. */
957 abdp
= aout_backend_info (abfd
);
961 && (abdp
->text_includes_header
962 || obj_aout_subformat (abfd
) == q_magic_format
));
963 obj_textsec (abfd
)->filepos
= (ztih
964 ? adata (abfd
).exec_bytes_size
965 : adata (abfd
).zmagic_disk_block_size
);
966 if (! obj_textsec (abfd
)->user_set_vma
)
968 /* ?? Do we really need to check for relocs here? */
969 obj_textsec (abfd
)->vma
= ((abfd
->flags
& HAS_RELOC
)
972 ? (abdp
->default_text_vma
973 + adata (abfd
).exec_bytes_size
)
974 : abdp
->default_text_vma
));
979 /* The .text section is being loaded at an unusual address. We
980 may need to pad it such that the .data section starts at a page
983 text_pad
= ((obj_textsec (abfd
)->filepos
- obj_textsec (abfd
)->vma
)
984 & (adata (abfd
).page_size
- 1));
986 text_pad
= ((- obj_textsec (abfd
)->vma
)
987 & (adata (abfd
).page_size
- 1));
990 /* Find start of data. */
993 text_end
= obj_textsec (abfd
)->filepos
+ obj_textsec (abfd
)->size
;
994 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
998 /* Note that if page_size == zmagic_disk_block_size, then
999 filepos == page_size, and this case is the same as the ztih
1001 text_end
= obj_textsec (abfd
)->size
;
1002 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
1003 text_end
+= obj_textsec (abfd
)->filepos
;
1005 obj_textsec (abfd
)->size
+= text_pad
;
1006 text_end
+= text_pad
;
1009 if (!obj_datasec (abfd
)->user_set_vma
)
1012 vma
= obj_textsec (abfd
)->vma
+ obj_textsec (abfd
)->size
;
1013 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1015 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
1017 asection
* text
= obj_textsec (abfd
);
1018 asection
* data
= obj_datasec (abfd
);
1020 text_pad
= data
->vma
- (text
->vma
+ text
->size
);
1021 /* Only pad the text section if the data
1022 section is going to be placed after it. */
1024 text
->size
+= text_pad
;
1026 obj_datasec (abfd
)->filepos
= (obj_textsec (abfd
)->filepos
1027 + obj_textsec (abfd
)->size
);
1029 /* Fix up exec header while we're at it. */
1030 execp
->a_text
= obj_textsec (abfd
)->size
;
1031 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
1032 execp
->a_text
+= adata (abfd
).exec_bytes_size
;
1033 if (obj_aout_subformat (abfd
) == q_magic_format
)
1034 N_SET_MAGIC (execp
, QMAGIC
);
1036 N_SET_MAGIC (execp
, ZMAGIC
);
1038 /* Spec says data section should be rounded up to page boundary. */
1039 obj_datasec (abfd
)->size
1040 = align_power (obj_datasec (abfd
)->size
,
1041 obj_bsssec (abfd
)->alignment_power
);
1042 execp
->a_data
= BFD_ALIGN (obj_datasec (abfd
)->size
,
1043 adata (abfd
).page_size
);
1044 data_pad
= execp
->a_data
- obj_datasec (abfd
)->size
;
1047 if (!obj_bsssec (abfd
)->user_set_vma
)
1048 obj_bsssec (abfd
)->vma
= (obj_datasec (abfd
)->vma
1049 + obj_datasec (abfd
)->size
);
1050 /* If the BSS immediately follows the data section and extra space
1051 in the page is left after the data section, fudge data
1052 in the header so that the bss section looks smaller by that
1053 amount. We'll start the bss section there, and lie to the OS.
1054 (Note that a linker script, as well as the above assignment,
1055 could have explicitly set the BSS vma to immediately follow
1056 the data section.) */
1057 if (align_power (obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->alignment_power
)
1058 == obj_datasec (abfd
)->vma
+ obj_datasec (abfd
)->size
)
1059 execp
->a_bss
= (data_pad
> obj_bsssec (abfd
)->size
1060 ? 0 : obj_bsssec (abfd
)->size
- data_pad
);
1062 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1066 adjust_n_magic (bfd
*abfd
, struct internal_exec
*execp
)
1068 file_ptr pos
= adata (abfd
).exec_bytes_size
;
1073 obj_textsec (abfd
)->filepos
= pos
;
1074 if (!obj_textsec (abfd
)->user_set_vma
)
1075 obj_textsec (abfd
)->vma
= vma
;
1077 vma
= obj_textsec (abfd
)->vma
;
1078 pos
+= obj_textsec (abfd
)->size
;
1079 vma
+= obj_textsec (abfd
)->size
;
1082 obj_datasec (abfd
)->filepos
= pos
;
1083 if (!obj_datasec (abfd
)->user_set_vma
)
1084 obj_datasec (abfd
)->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1085 vma
= obj_datasec (abfd
)->vma
;
1087 /* Since BSS follows data immediately, see if it needs alignment. */
1088 vma
+= obj_datasec (abfd
)->size
;
1089 pad
= align_power (vma
, obj_bsssec (abfd
)->alignment_power
) - vma
;
1090 obj_datasec (abfd
)->size
+= pad
;
1091 pos
+= obj_datasec (abfd
)->size
;
1094 if (!obj_bsssec (abfd
)->user_set_vma
)
1095 obj_bsssec (abfd
)->vma
= vma
;
1097 vma
= obj_bsssec (abfd
)->vma
;
1099 /* Fix up exec header. */
1100 execp
->a_text
= obj_textsec (abfd
)->size
;
1101 execp
->a_data
= obj_datasec (abfd
)->size
;
1102 execp
->a_bss
= obj_bsssec (abfd
)->size
;
1103 N_SET_MAGIC (execp
, NMAGIC
);
1107 NAME (aout
, adjust_sizes_and_vmas
) (bfd
*abfd
)
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 /* Rule (heuristic) for when to pad to a new page. Note that there
1122 are (at least) two ways demand-paged (ZMAGIC) files have been
1123 handled. Most Berkeley-based systems start the text segment at
1124 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1125 segment right after the exec header; the latter is counted in the
1126 text segment size, and is paged in by the kernel with the rest of
1129 /* This perhaps isn't the right way to do this, but made it simpler for me
1130 to understand enough to implement it. Better would probably be to go
1131 right from BFD flags to alignment/positioning characteristics. But the
1132 old code was sloppy enough about handling the flags, and had enough
1133 other magic, that it was a little hard for me to understand. I think
1134 I understand it better now, but I haven't time to do the cleanup this
1137 if (abfd
->flags
& D_PAGED
)
1138 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1139 adata (abfd
).magic
= z_magic
;
1140 else if (abfd
->flags
& WP_TEXT
)
1141 adata (abfd
).magic
= n_magic
;
1143 adata (abfd
).magic
= o_magic
;
1145 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1147 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1149 switch (adata (abfd
).magic
)
1151 case n_magic
: str
= "NMAGIC"; break;
1152 case o_magic
: str
= "OMAGIC"; break;
1153 case z_magic
: str
= "ZMAGIC"; break;
1158 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1159 obj_textsec (abfd
)->alignment_power
,
1160 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1161 obj_datasec (abfd
)->alignment_power
,
1162 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
,
1163 obj_bsssec (abfd
)->alignment_power
);
1167 switch (adata (abfd
).magic
)
1170 adjust_o_magic (abfd
, execp
);
1173 adjust_z_magic (abfd
, execp
);
1176 adjust_n_magic (abfd
, execp
);
1182 #ifdef BFD_AOUT_DEBUG
1183 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1184 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1185 obj_textsec (abfd
)->filepos
,
1186 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1187 obj_datasec (abfd
)->filepos
,
1188 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
);
1196 aout_@var{size}_new_section_hook
1199 bfd_boolean aout_@var{size}_new_section_hook,
1204 Called by the BFD in response to a @code{bfd_make_section}
1208 NAME (aout
, new_section_hook
) (bfd
*abfd
, asection
*newsect
)
1210 /* Align to double at least. */
1211 newsect
->alignment_power
= bfd_get_arch_info (abfd
)->section_align_power
;
1213 if (bfd_get_format (abfd
) == bfd_object
)
1215 if (obj_textsec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".text"))
1217 obj_textsec (abfd
)= newsect
;
1218 newsect
->target_index
= N_TEXT
;
1220 else if (obj_datasec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".data"))
1222 obj_datasec (abfd
) = newsect
;
1223 newsect
->target_index
= N_DATA
;
1225 else if (obj_bsssec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".bss"))
1227 obj_bsssec (abfd
) = newsect
;
1228 newsect
->target_index
= N_BSS
;
1232 /* We allow more than three sections internally. */
1233 return _bfd_generic_new_section_hook (abfd
, newsect
);
1237 NAME (aout
, set_section_contents
) (bfd
*abfd
,
1239 const void * location
,
1241 bfd_size_type count
)
1243 if (! abfd
->output_has_begun
)
1245 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
1249 if (section
== obj_bsssec (abfd
))
1251 bfd_set_error (bfd_error_no_contents
);
1255 if (section
!= obj_textsec (abfd
)
1256 && section
!= obj_datasec (abfd
))
1258 if (aout_section_merge_with_text_p (abfd
, section
))
1259 section
->filepos
= obj_textsec (abfd
)->filepos
+
1260 (section
->vma
- obj_textsec (abfd
)->vma
);
1264 /* xgettext:c-format */
1265 (_("%pB: can not represent section `%pA' in a.out object file format"),
1267 bfd_set_error (bfd_error_nonrepresentable_section
);
1274 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1275 || bfd_bwrite (location
, count
, abfd
) != count
)
1282 /* Read the external symbols from an a.out file. */
1285 aout_get_external_symbols (bfd
*abfd
)
1287 if (obj_aout_external_syms (abfd
) == NULL
)
1289 bfd_size_type count
;
1290 struct external_nlist
*syms
;
1291 bfd_size_type amt
= exec_hdr (abfd
)->a_syms
;
1293 count
= amt
/ EXTERNAL_NLIST_SIZE
;
1295 return TRUE
; /* Nothing to do. */
1298 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
), amt
,
1299 &obj_aout_sym_window (abfd
), TRUE
))
1301 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1303 /* We allocate using malloc to make the values easy to free
1304 later on. If we put them on the objalloc it might not be
1305 possible to free them. */
1306 syms
= (struct external_nlist
*) bfd_malloc (amt
);
1310 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1311 || bfd_bread (syms
, amt
, abfd
) != amt
)
1318 obj_aout_external_syms (abfd
) = syms
;
1319 obj_aout_external_sym_count (abfd
) = count
;
1322 if (obj_aout_external_strings (abfd
) == NULL
1323 && exec_hdr (abfd
)->a_syms
!= 0)
1325 unsigned char string_chars
[BYTES_IN_WORD
];
1326 bfd_size_type stringsize
;
1328 bfd_size_type amt
= BYTES_IN_WORD
;
1330 /* Get the size of the strings. */
1331 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1332 || bfd_bread ((void *) string_chars
, amt
, abfd
) != amt
)
1334 stringsize
= GET_WORD (abfd
, string_chars
);
1335 if (stringsize
== 0)
1337 else if (stringsize
< BYTES_IN_WORD
1338 || (size_t) stringsize
!= stringsize
)
1340 bfd_set_error (bfd_error_bad_value
);
1345 if (stringsize
>= BYTES_IN_WORD
)
1347 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
+ 1,
1348 &obj_aout_string_window (abfd
), TRUE
))
1350 strings
= (char *) obj_aout_string_window (abfd
).data
;
1355 strings
= (char *) bfd_malloc (stringsize
+ 1);
1356 if (strings
== NULL
)
1359 if (stringsize
>= BYTES_IN_WORD
)
1361 /* Keep the string count in the buffer for convenience
1362 when indexing with e_strx. */
1363 amt
= stringsize
- BYTES_IN_WORD
;
1364 if (bfd_bread (strings
+ BYTES_IN_WORD
, amt
, abfd
) != amt
)
1371 /* Ensure that a zero index yields an empty string. */
1374 /* Ensure that the string buffer is NUL terminated. */
1375 strings
[stringsize
] = 0;
1377 obj_aout_external_strings (abfd
) = strings
;
1378 obj_aout_external_string_size (abfd
) = stringsize
;
1384 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1385 and symbol->value fields of CACHE_PTR will be set from the a.out
1386 nlist structure. This function is responsible for setting
1387 symbol->flags and symbol->section, and adjusting symbol->value. */
1390 translate_from_native_sym_flags (bfd
*abfd
, aout_symbol_type
*cache_ptr
)
1394 if ((cache_ptr
->type
& N_STAB
) != 0
1395 || cache_ptr
->type
== N_FN
)
1399 /* This is a debugging symbol. */
1400 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1402 /* Work out the symbol section. */
1403 switch (cache_ptr
->type
& N_TYPE
)
1407 sec
= obj_textsec (abfd
);
1410 sec
= obj_datasec (abfd
);
1413 sec
= obj_bsssec (abfd
);
1417 sec
= bfd_abs_section_ptr
;
1421 cache_ptr
->symbol
.section
= sec
;
1422 cache_ptr
->symbol
.value
-= sec
->vma
;
1427 /* Get the default visibility. This does not apply to all types, so
1428 we just hold it in a local variable to use if wanted. */
1429 if ((cache_ptr
->type
& N_EXT
) == 0)
1430 visible
= BSF_LOCAL
;
1432 visible
= BSF_GLOBAL
;
1434 switch (cache_ptr
->type
)
1437 case N_ABS
: case N_ABS
| N_EXT
:
1438 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1439 cache_ptr
->symbol
.flags
= visible
;
1442 case N_UNDF
| N_EXT
:
1443 if (cache_ptr
->symbol
.value
!= 0)
1445 /* This is a common symbol. */
1446 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1447 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1451 cache_ptr
->symbol
.flags
= 0;
1452 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1456 case N_TEXT
: case N_TEXT
| N_EXT
:
1457 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1458 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1459 cache_ptr
->symbol
.flags
= visible
;
1462 /* N_SETV symbols used to represent set vectors placed in the
1463 data section. They are no longer generated. Theoretically,
1464 it was possible to extract the entries and combine them with
1465 new ones, although I don't know if that was ever actually
1466 done. Unless that feature is restored, treat them as data
1468 case N_SETV
: case N_SETV
| N_EXT
:
1469 case N_DATA
: case N_DATA
| N_EXT
:
1470 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1471 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1472 cache_ptr
->symbol
.flags
= visible
;
1475 case N_BSS
: case N_BSS
| N_EXT
:
1476 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1477 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1478 cache_ptr
->symbol
.flags
= visible
;
1481 case N_SETA
: case N_SETA
| N_EXT
:
1482 case N_SETT
: case N_SETT
| N_EXT
:
1483 case N_SETD
: case N_SETD
| N_EXT
:
1484 case N_SETB
: case N_SETB
| N_EXT
:
1486 /* This code is no longer needed. It used to be used to make
1487 the linker handle set symbols, but they are now handled in
1488 the add_symbols routine instead. */
1489 switch (cache_ptr
->type
& N_TYPE
)
1492 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1495 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1498 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1501 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1505 cache_ptr
->symbol
.flags
|= BSF_CONSTRUCTOR
;
1510 /* This symbol is the text of a warning message. The next
1511 symbol is the symbol to associate the warning with. If a
1512 reference is made to that symbol, a warning is issued. */
1513 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_WARNING
;
1514 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1517 case N_INDR
: case N_INDR
| N_EXT
:
1518 /* An indirect symbol. This consists of two symbols in a row.
1519 The first symbol is the name of the indirection. The second
1520 symbol is the name of the target. A reference to the first
1521 symbol becomes a reference to the second. */
1522 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_INDIRECT
| visible
;
1523 cache_ptr
->symbol
.section
= bfd_ind_section_ptr
;
1527 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1528 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1532 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1533 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1537 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1538 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1539 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1543 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1544 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1545 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1549 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1550 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1551 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1558 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1561 translate_to_native_sym_flags (bfd
*abfd
,
1563 struct external_nlist
*sym_pointer
)
1565 bfd_vma value
= cache_ptr
->value
;
1569 /* Mask out any existing type bits in case copying from one section
1571 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1573 sec
= bfd_asymbol_section (cache_ptr
);
1578 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1581 /* xgettext:c-format */
1582 (_("%pB: can not represent section for symbol `%s' in a.out "
1583 "object file format"),
1585 cache_ptr
->name
!= NULL
? cache_ptr
->name
: _("*unknown*"));
1586 bfd_set_error (bfd_error_nonrepresentable_section
);
1590 if (sec
->output_section
!= NULL
)
1592 off
= sec
->output_offset
;
1593 sec
= sec
->output_section
;
1596 if (bfd_is_abs_section (sec
))
1597 sym_pointer
->e_type
[0] |= N_ABS
;
1598 else if (sec
== obj_textsec (abfd
))
1599 sym_pointer
->e_type
[0] |= N_TEXT
;
1600 else if (sec
== obj_datasec (abfd
))
1601 sym_pointer
->e_type
[0] |= N_DATA
;
1602 else if (sec
== obj_bsssec (abfd
))
1603 sym_pointer
->e_type
[0] |= N_BSS
;
1604 else if (bfd_is_und_section (sec
))
1605 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1606 else if (bfd_is_ind_section (sec
))
1607 sym_pointer
->e_type
[0] = N_INDR
;
1608 else if (bfd_is_com_section (sec
))
1609 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1612 if (aout_section_merge_with_text_p (abfd
, sec
))
1613 sym_pointer
->e_type
[0] |= N_TEXT
;
1617 /* xgettext:c-format */
1618 (_("%pB: can not represent section `%pA' in a.out object file format"),
1620 bfd_set_error (bfd_error_nonrepresentable_section
);
1625 /* Turn the symbol from section relative to absolute again. */
1626 value
+= sec
->vma
+ off
;
1628 if ((cache_ptr
->flags
& BSF_WARNING
) != 0)
1629 sym_pointer
->e_type
[0] = N_WARNING
;
1631 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1632 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1633 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1634 sym_pointer
->e_type
[0] |= N_EXT
;
1635 else if ((cache_ptr
->flags
& BSF_LOCAL
) != 0)
1636 sym_pointer
->e_type
[0] &= ~N_EXT
;
1638 if ((cache_ptr
->flags
& BSF_CONSTRUCTOR
) != 0)
1640 int type
= ((aout_symbol_type
*) cache_ptr
)->type
;
1644 case N_ABS
: type
= N_SETA
; break;
1645 case N_TEXT
: type
= N_SETT
; break;
1646 case N_DATA
: type
= N_SETD
; break;
1647 case N_BSS
: type
= N_SETB
; break;
1649 sym_pointer
->e_type
[0] = type
;
1652 if ((cache_ptr
->flags
& BSF_WEAK
) != 0)
1656 switch (sym_pointer
->e_type
[0] & N_TYPE
)
1659 case N_ABS
: type
= N_WEAKA
; break;
1660 case N_TEXT
: type
= N_WEAKT
; break;
1661 case N_DATA
: type
= N_WEAKD
; break;
1662 case N_BSS
: type
= N_WEAKB
; break;
1663 case N_UNDF
: type
= N_WEAKU
; break;
1665 sym_pointer
->e_type
[0] = type
;
1668 PUT_WORD (abfd
, value
, sym_pointer
->e_value
);
1673 /* Native-level interface to symbols. */
1676 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1678 size_t amt
= sizeof (aout_symbol_type
);
1680 aout_symbol_type
*new_symbol
= (aout_symbol_type
*) bfd_zalloc (abfd
, amt
);
1683 new_symbol
->symbol
.the_bfd
= abfd
;
1685 return &new_symbol
->symbol
;
1688 /* Translate a set of internal symbols into external symbols. */
1691 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1692 aout_symbol_type
*in
,
1693 struct external_nlist
*ext
,
1694 bfd_size_type count
,
1696 bfd_size_type strsize
,
1697 bfd_boolean dynamic
)
1699 struct external_nlist
*ext_end
;
1701 ext_end
= ext
+ count
;
1702 for (; ext
< ext_end
; ext
++, in
++)
1706 x
= GET_WORD (abfd
, ext
->e_strx
);
1707 in
->symbol
.the_bfd
= abfd
;
1709 /* For the normal symbols, the zero index points at the number
1710 of bytes in the string table but is to be interpreted as the
1711 null string. For the dynamic symbols, the number of bytes in
1712 the string table is stored in the __DYNAMIC structure and the
1713 zero index points at an actual string. */
1714 if (x
== 0 && ! dynamic
)
1715 in
->symbol
.name
= "";
1716 else if (x
< strsize
)
1717 in
->symbol
.name
= str
+ x
;
1721 (_("%pB: invalid string offset %" PRIu64
" >= %" PRIu64
),
1722 abfd
, (uint64_t) x
, (uint64_t) strsize
);
1723 bfd_set_error (bfd_error_bad_value
);
1727 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1728 in
->desc
= H_GET_16 (abfd
, ext
->e_desc
);
1729 in
->other
= H_GET_8 (abfd
, ext
->e_other
);
1730 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1731 in
->symbol
.udata
.p
= NULL
;
1733 if (! translate_from_native_sym_flags (abfd
, in
))
1737 in
->symbol
.flags
|= BSF_DYNAMIC
;
1743 /* We read the symbols into a buffer, which is discarded when this
1744 function exits. We read the strings into a buffer large enough to
1745 hold them all plus all the cached symbol entries. */
1748 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1750 struct external_nlist
*old_external_syms
;
1751 aout_symbol_type
*cached
;
1752 bfd_size_type cached_size
;
1754 /* If there's no work to be done, don't do any. */
1755 if (obj_aout_symbols (abfd
) != NULL
)
1758 old_external_syms
= obj_aout_external_syms (abfd
);
1760 if (! aout_get_external_symbols (abfd
))
1763 cached_size
= obj_aout_external_sym_count (abfd
);
1764 if (cached_size
== 0)
1765 return TRUE
; /* Nothing to do. */
1767 cached_size
*= sizeof (aout_symbol_type
);
1768 cached
= (aout_symbol_type
*) bfd_zmalloc (cached_size
);
1772 /* Convert from external symbol information to internal. */
1773 if (! (NAME (aout
, translate_symbol_table
)
1775 obj_aout_external_syms (abfd
),
1776 obj_aout_external_sym_count (abfd
),
1777 obj_aout_external_strings (abfd
),
1778 obj_aout_external_string_size (abfd
),
1785 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
1787 obj_aout_symbols (abfd
) = cached
;
1789 /* It is very likely that anybody who calls this function will not
1790 want the external symbol information, so if it was allocated
1791 because of our call to aout_get_external_symbols, we free it up
1792 right away to save space. */
1793 if (old_external_syms
== NULL
1794 && obj_aout_external_syms (abfd
) != NULL
)
1797 bfd_free_window (&obj_aout_sym_window (abfd
));
1799 free (obj_aout_external_syms (abfd
));
1801 obj_aout_external_syms (abfd
) = NULL
;
1807 /* We use a hash table when writing out symbols so that we only write
1808 out a particular string once. This helps particularly when the
1809 linker writes out stabs debugging entries, because each different
1810 contributing object file tends to have many duplicate stabs
1813 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1814 if BFD_TRADITIONAL_FORMAT is set. */
1816 /* Get the index of a string in a strtab, adding it if it is not
1819 static inline bfd_size_type
1820 add_to_stringtab (bfd
*abfd
,
1821 struct bfd_strtab_hash
*tab
,
1826 bfd_size_type str_index
;
1828 /* An index of 0 always means the empty string. */
1829 if (str
== 0 || *str
== '\0')
1832 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1833 doesn't understand a hashed string table. */
1835 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1838 str_index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1840 if (str_index
!= (bfd_size_type
) -1)
1841 /* Add BYTES_IN_WORD to the return value to account for the
1842 space taken up by the string table size. */
1843 str_index
+= BYTES_IN_WORD
;
1848 /* Write out a strtab. ABFD is already at the right location in the
1852 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1854 bfd_byte buffer
[BYTES_IN_WORD
];
1855 size_t amt
= BYTES_IN_WORD
;
1857 /* The string table starts with the size. */
1858 PUT_WORD (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_WORD
, buffer
);
1859 if (bfd_bwrite ((void *) buffer
, amt
, abfd
) != amt
)
1862 return _bfd_stringtab_emit (abfd
, tab
);
1866 NAME (aout
, write_syms
) (bfd
*abfd
)
1868 unsigned int count
;
1869 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1870 struct bfd_strtab_hash
*strtab
;
1872 strtab
= _bfd_stringtab_init ();
1876 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1878 asymbol
*g
= generic
[count
];
1880 struct external_nlist nsp
;
1883 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1884 if (indx
== (bfd_size_type
) -1)
1886 PUT_WORD (abfd
, indx
, (bfd_byte
*) nsp
.e_strx
);
1888 if (bfd_asymbol_flavour (g
) == abfd
->xvec
->flavour
)
1890 H_PUT_16 (abfd
, aout_symbol (g
)->desc
, nsp
.e_desc
);
1891 H_PUT_8 (abfd
, aout_symbol (g
)->other
, nsp
.e_other
);
1892 H_PUT_8 (abfd
, aout_symbol (g
)->type
, nsp
.e_type
);
1896 H_PUT_16 (abfd
, 0, nsp
.e_desc
);
1897 H_PUT_8 (abfd
, 0, nsp
.e_other
);
1898 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1901 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1904 amt
= EXTERNAL_NLIST_SIZE
;
1905 if (bfd_bwrite ((void *) &nsp
, amt
, abfd
) != amt
)
1908 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1909 here, at the end. */
1913 if (! emit_stringtab (abfd
, strtab
))
1916 _bfd_stringtab_free (strtab
);
1921 _bfd_stringtab_free (strtab
);
1926 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1928 unsigned int counter
= 0;
1929 aout_symbol_type
*symbase
;
1931 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1934 for (symbase
= obj_aout_symbols (abfd
);
1935 counter
++ < bfd_get_symcount (abfd
);
1937 *(location
++) = (asymbol
*) (symbase
++);
1939 return bfd_get_symcount (abfd
);
1942 /* Standard reloc stuff. */
1943 /* Output standard relocation information to a file in target byte order. */
1945 extern void NAME (aout
, swap_std_reloc_out
)
1946 (bfd
*, arelent
*, struct reloc_std_external
*);
1949 NAME (aout
, swap_std_reloc_out
) (bfd
*abfd
,
1951 struct reloc_std_external
*natptr
)
1954 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1956 unsigned int r_length
;
1958 int r_baserel
, r_jmptable
, r_relative
;
1959 asection
*output_section
= sym
->section
->output_section
;
1961 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
1963 BFD_ASSERT (g
->howto
!= NULL
);
1964 r_length
= g
->howto
->size
; /* Size as a power of two. */
1965 r_pcrel
= (int) g
->howto
->pc_relative
; /* Relative to PC? */
1966 /* XXX This relies on relocs coming from a.out files. */
1967 r_baserel
= (g
->howto
->type
& 8) != 0;
1968 r_jmptable
= (g
->howto
->type
& 16) != 0;
1969 r_relative
= (g
->howto
->type
& 32) != 0;
1971 /* Name was clobbered by aout_write_syms to be symbol index. */
1973 /* If this relocation is relative to a symbol then set the
1974 r_index to the symbols index, and the r_extern bit.
1976 Absolute symbols can come in in two ways, either as an offset
1977 from the abs section, or as a symbol which has an abs value.
1978 check for that here. */
1980 if (bfd_is_com_section (output_section
)
1981 || bfd_is_abs_section (output_section
)
1982 || bfd_is_und_section (output_section
)
1983 /* PR gas/3041 a.out relocs against weak symbols
1984 must be treated as if they were against externs. */
1985 || (sym
->flags
& BSF_WEAK
))
1987 if (bfd_abs_section_ptr
->symbol
== sym
)
1989 /* Whoops, looked like an abs symbol, but is
1990 really an offset from the abs section. */
1996 /* Fill in symbol. */
1998 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2003 /* Just an ordinary section. */
2005 r_index
= output_section
->target_index
;
2008 /* Now the fun stuff. */
2009 if (bfd_header_big_endian (abfd
))
2011 natptr
->r_index
[0] = r_index
>> 16;
2012 natptr
->r_index
[1] = r_index
>> 8;
2013 natptr
->r_index
[2] = r_index
;
2014 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
2015 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
2016 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
2017 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
2018 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
2019 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
2023 natptr
->r_index
[2] = r_index
>> 16;
2024 natptr
->r_index
[1] = r_index
>> 8;
2025 natptr
->r_index
[0] = r_index
;
2026 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
2027 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
2028 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
2029 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
2030 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
2031 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
2035 /* Extended stuff. */
2036 /* Output extended relocation information to a file in target byte order. */
2038 extern void NAME (aout
, swap_ext_reloc_out
)
2039 (bfd
*, arelent
*, struct reloc_ext_external
*);
2042 NAME (aout
, swap_ext_reloc_out
) (bfd
*abfd
,
2044 struct reloc_ext_external
*natptr
)
2048 unsigned int r_type
;
2050 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2051 asection
*output_section
= sym
->section
->output_section
;
2053 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
2055 r_type
= (unsigned int) g
->howto
->type
;
2057 r_addend
= g
->addend
;
2058 if ((sym
->flags
& BSF_SECTION_SYM
) != 0)
2059 r_addend
+= (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2061 /* If this relocation is relative to a symbol then set the
2062 r_index to the symbols index, and the r_extern bit.
2064 Absolute symbols can come in in two ways, either as an offset
2065 from the abs section, or as a symbol which has an abs value.
2066 check for that here. */
2067 if (bfd_is_abs_section (bfd_asymbol_section (sym
)))
2072 else if ((sym
->flags
& BSF_SECTION_SYM
) == 0)
2074 if (bfd_is_und_section (bfd_asymbol_section (sym
))
2075 || (sym
->flags
& BSF_GLOBAL
) != 0)
2079 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2083 /* Just an ordinary section. */
2085 r_index
= output_section
->target_index
;
2088 /* Now the fun stuff. */
2089 if (bfd_header_big_endian (abfd
))
2091 natptr
->r_index
[0] = r_index
>> 16;
2092 natptr
->r_index
[1] = r_index
>> 8;
2093 natptr
->r_index
[2] = r_index
;
2094 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
2095 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
2099 natptr
->r_index
[2] = r_index
>> 16;
2100 natptr
->r_index
[1] = r_index
>> 8;
2101 natptr
->r_index
[0] = r_index
;
2102 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
2103 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
));
2106 PUT_WORD (abfd
, r_addend
, natptr
->r_addend
);
2109 /* BFD deals internally with all things based from the section they're
2110 in. so, something in 10 bytes into a text section with a base of
2111 50 would have a symbol (.text+10) and know .text vma was 50.
2113 Aout keeps all it's symbols based from zero, so the symbol would
2114 contain 60. This macro subs the base of each section from the value
2115 to give the true offset from the section. */
2117 #define MOVE_ADDRESS(ad) \
2120 /* Undefined symbol. */ \
2121 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2122 cache_ptr->addend = ad; \
2126 /* Defined, section relative. Replace symbol with pointer to \
2127 symbol which points to section. */ \
2131 case N_TEXT | N_EXT: \
2132 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2133 cache_ptr->addend = ad - su->textsec->vma; \
2136 case N_DATA | N_EXT: \
2137 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2138 cache_ptr->addend = ad - su->datasec->vma; \
2141 case N_BSS | N_EXT: \
2142 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2143 cache_ptr->addend = ad - su->bsssec->vma; \
2147 case N_ABS | N_EXT: \
2148 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2149 cache_ptr->addend = ad; \
2155 NAME (aout
, swap_ext_reloc_in
) (bfd
*abfd
,
2156 struct reloc_ext_external
*bytes
,
2159 bfd_size_type symcount
)
2161 unsigned int r_index
;
2163 unsigned int r_type
;
2164 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2166 cache_ptr
->address
= (GET_SWORD (abfd
, bytes
->r_address
));
2168 /* Now the fun stuff. */
2169 if (bfd_header_big_endian (abfd
))
2171 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2172 | ((unsigned int) bytes
->r_index
[1] << 8)
2173 | bytes
->r_index
[2]);
2174 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
2175 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
2176 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
2180 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2181 | ((unsigned int) bytes
->r_index
[1] << 8)
2182 | bytes
->r_index
[0]);
2183 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
2184 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
2185 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
2188 if (r_type
< TABLE_SIZE (howto_table_ext
))
2189 cache_ptr
->howto
= howto_table_ext
+ r_type
;
2191 cache_ptr
->howto
= NULL
;
2193 /* Base relative relocs are always against the symbol table,
2194 regardless of the setting of r_extern. r_extern just reflects
2195 whether the symbol the reloc is against is local or global. */
2196 if (r_type
== (unsigned int) RELOC_BASE10
2197 || r_type
== (unsigned int) RELOC_BASE13
2198 || r_type
== (unsigned int) RELOC_BASE22
)
2201 if (r_extern
&& r_index
> symcount
)
2203 /* We could arrange to return an error, but it might be useful
2204 to see the file even if it is bad. */
2209 MOVE_ADDRESS (GET_SWORD (abfd
, bytes
->r_addend
));
2213 NAME (aout
, swap_std_reloc_in
) (bfd
*abfd
,
2214 struct reloc_std_external
*bytes
,
2217 bfd_size_type symcount
)
2219 unsigned int r_index
;
2221 unsigned int r_length
;
2223 int r_baserel
, r_jmptable
, r_relative
;
2224 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2225 unsigned int howto_idx
;
2227 cache_ptr
->address
= H_GET_32 (abfd
, bytes
->r_address
);
2229 /* Now the fun stuff. */
2230 if (bfd_header_big_endian (abfd
))
2232 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2233 | ((unsigned int) bytes
->r_index
[1] << 8)
2234 | bytes
->r_index
[2]);
2235 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
2236 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
2237 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
2238 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
2239 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
2240 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
2241 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
2245 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2246 | ((unsigned int) bytes
->r_index
[1] << 8)
2247 | bytes
->r_index
[0]);
2248 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
2249 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
2250 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_LITTLE
));
2251 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_LITTLE
));
2252 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_LITTLE
));
2253 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
2254 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
2257 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
2258 + 16 * r_jmptable
+ 32 * r_relative
);
2259 if (howto_idx
< TABLE_SIZE (howto_table_std
))
2261 cache_ptr
->howto
= howto_table_std
+ howto_idx
;
2262 if (cache_ptr
->howto
->type
== (unsigned int) -1)
2263 cache_ptr
->howto
= NULL
;
2266 cache_ptr
->howto
= NULL
;
2268 /* Base relative relocs are always against the symbol table,
2269 regardless of the setting of r_extern. r_extern just reflects
2270 whether the symbol the reloc is against is local or global. */
2274 if (r_extern
&& r_index
>= symcount
)
2276 /* We could arrange to return an error, but it might be useful
2277 to see the file even if it is bad. FIXME: Of course this
2278 means that objdump -r *doesn't* see the actual reloc, and
2279 objcopy silently writes a different reloc. */
2287 /* Read and swap the relocs for a section. */
2290 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
2292 bfd_size_type count
;
2293 bfd_size_type reloc_size
;
2295 arelent
*reloc_cache
;
2297 unsigned int counter
= 0;
2301 if (asect
->relocation
)
2304 if (asect
->flags
& SEC_CONSTRUCTOR
)
2307 if (asect
== obj_datasec (abfd
))
2308 reloc_size
= exec_hdr (abfd
)->a_drsize
;
2309 else if (asect
== obj_textsec (abfd
))
2310 reloc_size
= exec_hdr (abfd
)->a_trsize
;
2311 else if (asect
== obj_bsssec (abfd
))
2315 bfd_set_error (bfd_error_invalid_operation
);
2319 each_size
= obj_reloc_entry_size (abfd
);
2320 count
= reloc_size
/ each_size
;
2322 return TRUE
; /* Nothing to be done. */
2324 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
2327 relocs
= bfd_malloc (reloc_size
);
2331 if (bfd_bread (relocs
, reloc_size
, abfd
) != reloc_size
)
2337 amt
= count
* sizeof (arelent
);
2338 reloc_cache
= (arelent
*) bfd_zmalloc (amt
);
2339 if (reloc_cache
== NULL
)
2345 cache_ptr
= reloc_cache
;
2346 if (each_size
== RELOC_EXT_SIZE
)
2348 struct reloc_ext_external
*rptr
= (struct reloc_ext_external
*) relocs
;
2350 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2351 MY_swap_ext_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2352 (bfd_size_type
) bfd_get_symcount (abfd
));
2356 struct reloc_std_external
*rptr
= (struct reloc_std_external
*) relocs
;
2358 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2359 MY_swap_std_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2360 (bfd_size_type
) bfd_get_symcount (abfd
));
2365 asect
->relocation
= reloc_cache
;
2366 asect
->reloc_count
= cache_ptr
- reloc_cache
;
2371 /* Write out a relocation section into an object file. */
2374 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
2377 unsigned char *native
, *natptr
;
2380 unsigned int count
= section
->reloc_count
;
2381 bfd_size_type natsize
;
2383 if (count
== 0 || section
->orelocation
== NULL
)
2386 each_size
= obj_reloc_entry_size (abfd
);
2387 natsize
= (bfd_size_type
) each_size
* count
;
2388 native
= (unsigned char *) bfd_zalloc (abfd
, natsize
);
2392 generic
= section
->orelocation
;
2394 if (each_size
== RELOC_EXT_SIZE
)
2396 for (natptr
= native
;
2398 --count
, natptr
+= each_size
, ++generic
)
2400 /* PR 20921: If the howto field has not been initialised then skip
2402 PR 20929: Similarly for the symbol field. */
2403 if ((*generic
)->howto
== NULL
2404 || (*generic
)->sym_ptr_ptr
== NULL
)
2406 bfd_set_error (bfd_error_invalid_operation
);
2407 _bfd_error_handler (_("\
2408 %pB: attempt to write out unknown reloc type"), abfd
);
2411 MY_swap_ext_reloc_out (abfd
, *generic
,
2412 (struct reloc_ext_external
*) natptr
);
2417 for (natptr
= native
;
2419 --count
, natptr
+= each_size
, ++generic
)
2421 if ((*generic
)->howto
== NULL
2422 || (*generic
)->sym_ptr_ptr
== NULL
)
2424 bfd_set_error (bfd_error_invalid_operation
);
2425 _bfd_error_handler (_("\
2426 %pB: attempt to write out unknown reloc type"), abfd
);
2429 MY_swap_std_reloc_out (abfd
, *generic
,
2430 (struct reloc_std_external
*) natptr
);
2434 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
2436 bfd_release (abfd
, native
);
2439 bfd_release (abfd
, native
);
2444 /* This is stupid. This function should be a boolean predicate. */
2447 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
2452 arelent
*tblptr
= section
->relocation
;
2455 if (section
== obj_bsssec (abfd
))
2461 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
) (abfd
, section
, symbols
)))
2464 if (section
->flags
& SEC_CONSTRUCTOR
)
2466 arelent_chain
*chain
= section
->constructor_chain
;
2467 for (count
= 0; count
< section
->reloc_count
; count
++)
2469 *relptr
++ = &chain
->relent
;
2470 chain
= chain
->next
;
2475 tblptr
= section
->relocation
;
2477 for (count
= 0; count
++ < section
->reloc_count
; )
2479 *relptr
++ = tblptr
++;
2484 return section
->reloc_count
;
2488 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
2490 bfd_size_type count
;
2492 if (bfd_get_format (abfd
) != bfd_object
)
2494 bfd_set_error (bfd_error_invalid_operation
);
2498 if (asect
->flags
& SEC_CONSTRUCTOR
)
2499 count
= asect
->reloc_count
;
2500 else if (asect
== obj_datasec (abfd
))
2501 count
= exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
2502 else if (asect
== obj_textsec (abfd
))
2503 count
= exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
2504 else if (asect
== obj_bsssec (abfd
))
2508 bfd_set_error (bfd_error_invalid_operation
);
2512 if (count
>= LONG_MAX
/ sizeof (arelent
*))
2514 bfd_set_error (bfd_error_file_too_big
);
2517 return (count
+ 1) * sizeof (arelent
*);
2521 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2523 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2526 return (bfd_get_symcount (abfd
)+1) * (sizeof (aout_symbol_type
*));
2530 NAME (aout
, get_lineno
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2531 asymbol
*ignore_symbol ATTRIBUTE_UNUSED
)
2537 NAME (aout
, get_symbol_info
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2541 bfd_symbol_info (symbol
, ret
);
2543 if (ret
->type
== '?')
2545 int type_code
= aout_symbol (symbol
)->type
& 0xff;
2546 const char *stab_name
= bfd_get_stab_name (type_code
);
2547 static char buf
[10];
2549 if (stab_name
== NULL
)
2551 sprintf (buf
, "(%d)", type_code
);
2555 ret
->stab_type
= type_code
;
2556 ret
->stab_other
= (unsigned) (aout_symbol (symbol
)->other
& 0xff);
2557 ret
->stab_desc
= (unsigned) (aout_symbol (symbol
)->desc
& 0xffff);
2558 ret
->stab_name
= stab_name
;
2563 NAME (aout
, print_symbol
) (bfd
*abfd
,
2566 bfd_print_symbol_type how
)
2568 FILE *file
= (FILE *)afile
;
2572 case bfd_print_symbol_name
:
2574 fprintf (file
,"%s", symbol
->name
);
2576 case bfd_print_symbol_more
:
2577 fprintf (file
,"%4x %2x %2x",
2578 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2579 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2580 (unsigned) (aout_symbol (symbol
)->type
));
2582 case bfd_print_symbol_all
:
2584 const char *section_name
= symbol
->section
->name
;
2586 bfd_print_symbol_vandf (abfd
, (void *)file
, symbol
);
2588 fprintf (file
," %-5s %04x %02x %02x",
2590 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2591 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2592 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2594 fprintf (file
," %s", symbol
->name
);
2600 /* If we don't have to allocate more than 1MB to hold the generic
2601 symbols, we use the generic minisymbol methord: it's faster, since
2602 it only translates the symbols once, not multiple times. */
2603 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2605 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2606 symbols. The minisymbol_to_symbol function translates these into
2607 BFD asymbol structures. */
2610 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2611 bfd_boolean dynamic
,
2613 unsigned int *sizep
)
2616 /* We could handle the dynamic symbols here as well, but it's
2617 easier to hand them off. */
2618 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2620 if (! aout_get_external_symbols (abfd
))
2623 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2624 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2626 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2628 /* By passing the external symbols back from this routine, we are
2629 giving up control over the memory block. Clear
2630 obj_aout_external_syms, so that we do not try to free it
2632 obj_aout_external_syms (abfd
) = NULL
;
2634 *sizep
= EXTERNAL_NLIST_SIZE
;
2635 return obj_aout_external_sym_count (abfd
);
2638 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2639 unmodified a.out symbol. The SYM argument is a structure returned
2640 by bfd_make_empty_symbol, which we fill in here. */
2643 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2644 bfd_boolean dynamic
,
2645 const void * minisym
,
2649 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2650 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2652 memset (sym
, 0, sizeof (aout_symbol_type
));
2654 /* We call translate_symbol_table to translate a single symbol. */
2655 if (! (NAME (aout
, translate_symbol_table
)
2657 (aout_symbol_type
*) sym
,
2658 (struct external_nlist
*) minisym
,
2660 obj_aout_external_strings (abfd
),
2661 obj_aout_external_string_size (abfd
),
2668 /* Provided a BFD, a section and an offset into the section, calculate
2669 and return the name of the source file and the line nearest to the
2673 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2677 const char **filename_ptr
,
2678 const char **functionname_ptr
,
2679 unsigned int *line_ptr
,
2680 unsigned int *disriminator_ptr
)
2682 /* Run down the file looking for the filename, function and linenumber. */
2684 const char *directory_name
= NULL
;
2685 const char *main_file_name
= NULL
;
2686 const char *current_file_name
= NULL
;
2687 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2688 const char *line_directory_name
= NULL
; /* Value of directory_name at line number. */
2689 bfd_vma low_line_vma
= 0;
2690 bfd_vma low_func_vma
= 0;
2692 bfd_size_type filelen
, funclen
;
2695 *filename_ptr
= abfd
->filename
;
2696 *functionname_ptr
= NULL
;
2698 if (disriminator_ptr
)
2699 *disriminator_ptr
= 0;
2701 if (symbols
!= NULL
)
2703 for (p
= symbols
; *p
; p
++)
2705 aout_symbol_type
*q
= (aout_symbol_type
*) (*p
);
2710 /* If this looks like a file name symbol, and it comes after
2711 the line number we have found so far, but before the
2712 offset, then we have probably not found the right line
2714 if (q
->symbol
.value
<= offset
2715 && ((q
->symbol
.value
> low_line_vma
2716 && (line_file_name
!= NULL
2718 || (q
->symbol
.value
> low_func_vma
2721 const char *symname
;
2723 symname
= q
->symbol
.name
;
2726 && strlen (symname
) > 2
2727 && strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2729 if (q
->symbol
.value
> low_line_vma
)
2732 line_file_name
= NULL
;
2734 if (q
->symbol
.value
> low_func_vma
)
2741 /* If this symbol is less than the offset, but greater than
2742 the line number we have found so far, then we have not
2743 found the right line number. */
2744 if (q
->symbol
.value
<= offset
)
2746 if (q
->symbol
.value
> low_line_vma
)
2749 line_file_name
= NULL
;
2751 if (q
->symbol
.value
> low_func_vma
)
2755 main_file_name
= current_file_name
= q
->symbol
.name
;
2756 /* Look ahead to next symbol to check if that too is an N_SO. */
2760 q
= (aout_symbol_type
*) (*p
);
2761 if (q
->type
!= (int)N_SO
)
2764 /* Found a second N_SO First is directory; second is filename. */
2765 directory_name
= current_file_name
;
2766 main_file_name
= current_file_name
= q
->symbol
.name
;
2767 if (obj_textsec (abfd
) != section
)
2771 current_file_name
= q
->symbol
.name
;
2778 /* We'll keep this if it resolves nearer than the one we have
2780 if (q
->symbol
.value
>= low_line_vma
2781 && q
->symbol
.value
<= offset
)
2783 *line_ptr
= q
->desc
;
2784 low_line_vma
= q
->symbol
.value
;
2785 line_file_name
= current_file_name
;
2786 line_directory_name
= directory_name
;
2791 /* We'll keep this if it is nearer than the one we have already. */
2792 if (q
->symbol
.value
>= low_func_vma
2793 && q
->symbol
.value
<= offset
)
2795 low_func_vma
= q
->symbol
.value
;
2796 func
= (asymbol
*)q
;
2798 else if (q
->symbol
.value
> offset
)
2809 main_file_name
= line_file_name
;
2810 directory_name
= line_directory_name
;
2813 if (main_file_name
== NULL
2814 || IS_ABSOLUTE_PATH (main_file_name
)
2815 || directory_name
== NULL
)
2818 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2823 funclen
= strlen (bfd_asymbol_name (func
));
2825 if (adata (abfd
).line_buf
!= NULL
)
2826 free (adata (abfd
).line_buf
);
2828 if (filelen
+ funclen
== 0)
2829 adata (abfd
).line_buf
= buf
= NULL
;
2832 buf
= (char *) bfd_malloc (filelen
+ funclen
+ 3);
2833 adata (abfd
).line_buf
= buf
;
2838 if (main_file_name
!= NULL
)
2840 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2841 *filename_ptr
= main_file_name
;
2845 /* PR binutils/20891: In a corrupt input file both
2846 main_file_name and directory_name can be empty... */
2847 * filename_ptr
= NULL
;
2850 snprintf (buf
, filelen
+ 1, "%s%s", directory_name
,
2852 *filename_ptr
= buf
;
2860 const char *function
= func
->name
;
2865 /* PR binutils/20892: In a corrupt input file func can be empty. */
2866 * functionname_ptr
= NULL
;
2869 /* The caller expects a symbol name. We actually have a
2870 function name, without the leading underscore. Put the
2871 underscore back in, so that the caller gets a symbol name. */
2872 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2873 strcpy (buf
, function
);
2876 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2877 strcpy (buf
+ 1, function
);
2879 /* Have to remove : stuff. */
2880 colon
= strchr (buf
, ':');
2883 *functionname_ptr
= buf
;
2890 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2891 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2893 return adata (abfd
).exec_bytes_size
;
2896 /* Free all information we have cached for this BFD. We can always
2897 read it again later if we need it. */
2900 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2904 if (bfd_get_format (abfd
) != bfd_object
2905 || abfd
->tdata
.aout_data
== NULL
)
2908 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2909 BFCI_FREE (obj_aout_symbols (abfd
));
2911 obj_aout_external_syms (abfd
) = 0;
2912 bfd_free_window (&obj_aout_sym_window (abfd
));
2913 bfd_free_window (&obj_aout_string_window (abfd
));
2914 obj_aout_external_strings (abfd
) = 0;
2916 BFCI_FREE (obj_aout_external_syms (abfd
));
2917 BFCI_FREE (obj_aout_external_strings (abfd
));
2919 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2920 BFCI_FREE (o
->relocation
);
2926 /* a.out link code. */
2928 /* Routine to create an entry in an a.out link hash table. */
2930 struct bfd_hash_entry
*
2931 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2932 struct bfd_hash_table
*table
,
2935 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2937 /* Allocate the structure if it has not already been allocated by a
2940 ret
= (struct aout_link_hash_entry
*) bfd_hash_allocate (table
,
2945 /* Call the allocation method of the superclass. */
2946 ret
= ((struct aout_link_hash_entry
*)
2947 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2951 /* Set local fields. */
2952 ret
->written
= FALSE
;
2956 return (struct bfd_hash_entry
*) ret
;
2959 /* Initialize an a.out link hash table. */
2962 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2964 struct bfd_hash_entry
*(*newfunc
)
2965 (struct bfd_hash_entry
*, struct bfd_hash_table
*,
2967 unsigned int entsize
)
2969 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2972 /* Create an a.out link hash table. */
2974 struct bfd_link_hash_table
*
2975 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2977 struct aout_link_hash_table
*ret
;
2978 size_t amt
= sizeof (* ret
);
2980 ret
= (struct aout_link_hash_table
*) bfd_malloc (amt
);
2984 if (!NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2985 NAME (aout
, link_hash_newfunc
),
2986 sizeof (struct aout_link_hash_entry
)))
2994 /* Add all symbols from an object file to the hash table. */
2997 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2999 bfd_boolean (*add_one_symbol
)
3000 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
3001 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
3002 struct bfd_link_hash_entry
**);
3003 struct external_nlist
*syms
;
3004 bfd_size_type sym_count
;
3007 struct aout_link_hash_entry
**sym_hash
;
3008 struct external_nlist
*p
;
3009 struct external_nlist
*pend
;
3012 syms
= obj_aout_external_syms (abfd
);
3013 sym_count
= obj_aout_external_sym_count (abfd
);
3014 strings
= obj_aout_external_strings (abfd
);
3015 if (info
->keep_memory
)
3020 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
3022 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
3023 (abfd
, info
, &syms
, &sym_count
, &strings
)))
3028 return TRUE
; /* Nothing to do. */
3030 /* We keep a list of the linker hash table entries that correspond
3031 to particular symbols. We could just look them up in the hash
3032 table, but keeping the list is more efficient. Perhaps this
3033 should be conditional on info->keep_memory. */
3034 amt
= sym_count
* sizeof (struct aout_link_hash_entry
*);
3035 sym_hash
= (struct aout_link_hash_entry
**) bfd_alloc (abfd
, amt
);
3036 if (sym_hash
== NULL
)
3038 obj_aout_sym_hashes (abfd
) = sym_hash
;
3040 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
3041 if (add_one_symbol
== NULL
)
3042 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
3045 pend
= p
+ sym_count
;
3046 for (; p
< pend
; p
++, sym_hash
++)
3057 type
= H_GET_8 (abfd
, p
->e_type
);
3059 /* Ignore debugging symbols. */
3060 if ((type
& N_STAB
) != 0)
3063 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3064 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3066 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3067 value
= GET_WORD (abfd
, p
->e_value
);
3084 /* Ignore symbols that are not externally visible. */
3087 /* Ignore local indirect symbol. */
3092 case N_UNDF
| N_EXT
:
3095 section
= bfd_und_section_ptr
;
3099 section
= bfd_com_section_ptr
;
3102 section
= bfd_abs_section_ptr
;
3104 case N_TEXT
| N_EXT
:
3105 section
= obj_textsec (abfd
);
3106 value
-= bfd_section_vma (section
);
3108 case N_DATA
| N_EXT
:
3109 case N_SETV
| N_EXT
:
3110 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3111 translate_from_native_sym_flags. */
3112 section
= obj_datasec (abfd
);
3113 value
-= bfd_section_vma (section
);
3116 section
= obj_bsssec (abfd
);
3117 value
-= bfd_section_vma (section
);
3119 case N_INDR
| N_EXT
:
3120 /* An indirect symbol. The next symbol is the symbol
3121 which this one really is. */
3122 /* See PR 20925 for a reproducer. */
3126 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3127 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3129 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3130 section
= bfd_ind_section_ptr
;
3131 flags
|= BSF_INDIRECT
;
3133 case N_COMM
| N_EXT
:
3134 section
= bfd_com_section_ptr
;
3136 case N_SETA
: case N_SETA
| N_EXT
:
3137 section
= bfd_abs_section_ptr
;
3138 flags
|= BSF_CONSTRUCTOR
;
3140 case N_SETT
: case N_SETT
| N_EXT
:
3141 section
= obj_textsec (abfd
);
3142 flags
|= BSF_CONSTRUCTOR
;
3143 value
-= bfd_section_vma (section
);
3145 case N_SETD
: case N_SETD
| N_EXT
:
3146 section
= obj_datasec (abfd
);
3147 flags
|= BSF_CONSTRUCTOR
;
3148 value
-= bfd_section_vma (section
);
3150 case N_SETB
: case N_SETB
| N_EXT
:
3151 section
= obj_bsssec (abfd
);
3152 flags
|= BSF_CONSTRUCTOR
;
3153 value
-= bfd_section_vma (section
);
3156 /* A warning symbol. The next symbol is the one to warn
3157 about. If there is no next symbol, just look away. */
3162 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3163 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3165 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3166 section
= bfd_und_section_ptr
;
3167 flags
|= BSF_WARNING
;
3170 section
= bfd_und_section_ptr
;
3174 section
= bfd_abs_section_ptr
;
3178 section
= obj_textsec (abfd
);
3179 value
-= bfd_section_vma (section
);
3183 section
= obj_datasec (abfd
);
3184 value
-= bfd_section_vma (section
);
3188 section
= obj_bsssec (abfd
);
3189 value
-= bfd_section_vma (section
);
3194 if (! ((*add_one_symbol
)
3195 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
3196 (struct bfd_link_hash_entry
**) sym_hash
)))
3199 /* Restrict the maximum alignment of a common symbol based on
3200 the architecture, since a.out has no way to represent
3201 alignment requirements of a section in a .o file. FIXME:
3202 This isn't quite right: it should use the architecture of the
3203 output file, not the input files. */
3204 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3205 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3206 bfd_get_arch_info (abfd
)->section_align_power
))
3207 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3208 bfd_get_arch_info (abfd
)->section_align_power
;
3210 /* If this is a set symbol, and we are not building sets, then
3211 it is possible for the hash entry to not have been set. In
3212 such a case, treat the symbol as not globally defined. */
3213 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3215 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3219 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3226 /* Free up the internal symbols read from an a.out file. */
3229 aout_link_free_symbols (bfd
*abfd
)
3231 if (obj_aout_external_syms (abfd
) != NULL
)
3234 bfd_free_window (&obj_aout_sym_window (abfd
));
3236 free ((void *) obj_aout_external_syms (abfd
));
3238 obj_aout_external_syms (abfd
) = NULL
;
3240 if (obj_aout_external_strings (abfd
) != NULL
)
3243 bfd_free_window (&obj_aout_string_window (abfd
));
3245 free ((void *) obj_aout_external_strings (abfd
));
3247 obj_aout_external_strings (abfd
) = NULL
;
3252 /* Add symbols from an a.out object file. */
3255 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3257 if (! aout_get_external_symbols (abfd
))
3259 if (! aout_link_add_symbols (abfd
, info
))
3261 if (! info
->keep_memory
)
3263 if (! aout_link_free_symbols (abfd
))
3269 /* Look through the internal symbols to see if this object file should
3270 be included in the link. We should include this object file if it
3271 defines any symbols which are currently undefined. If this object
3272 file defines a common symbol, then we may adjust the size of the
3273 known symbol but we do not include the object file in the link
3274 (unless there is some other reason to include it). */
3277 aout_link_check_ar_symbols (bfd
*abfd
,
3278 struct bfd_link_info
*info
,
3279 bfd_boolean
*pneeded
,
3282 struct external_nlist
*p
;
3283 struct external_nlist
*pend
;
3288 /* Look through all the symbols. */
3289 p
= obj_aout_external_syms (abfd
);
3290 pend
= p
+ obj_aout_external_sym_count (abfd
);
3291 strings
= obj_aout_external_strings (abfd
);
3292 for (; p
< pend
; p
++)
3294 int type
= H_GET_8 (abfd
, p
->e_type
);
3296 struct bfd_link_hash_entry
*h
;
3298 /* Ignore symbols that are not externally visible. This is an
3299 optimization only, as we check the type more thoroughly
3301 if (((type
& N_EXT
) == 0
3302 || (type
& N_STAB
) != 0
3309 if (type
== N_WARNING
3315 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3316 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
3318 /* We are only interested in symbols that are currently
3319 undefined or common. */
3321 || (h
->type
!= bfd_link_hash_undefined
3322 && h
->type
!= bfd_link_hash_common
))
3324 if (type
== (N_INDR
| N_EXT
))
3329 if (type
== (N_TEXT
| N_EXT
)
3330 || type
== (N_DATA
| N_EXT
)
3331 || type
== (N_BSS
| N_EXT
)
3332 || type
== (N_ABS
| N_EXT
)
3333 || type
== (N_INDR
| N_EXT
))
3335 /* This object file defines this symbol. We must link it
3336 in. This is true regardless of whether the current
3337 definition of the symbol is undefined or common.
3339 If the current definition is common, we have a case in
3340 which we have already seen an object file including:
3342 and this object file from the archive includes:
3344 In such a case, whether to include this object is target
3345 dependant for backward compatibility.
3347 FIXME: The SunOS 4.1.3 linker will pull in the archive
3348 element if the symbol is defined in the .data section,
3349 but not if it is defined in the .text section. That
3350 seems a bit crazy to me, and it has not been implemented
3351 yet. However, it might be correct. */
3352 if (h
->type
== bfd_link_hash_common
)
3356 switch (info
->common_skip_ar_symbols
)
3358 case bfd_link_common_skip_none
:
3360 case bfd_link_common_skip_text
:
3361 skip
= (type
== (N_TEXT
| N_EXT
));
3363 case bfd_link_common_skip_data
:
3364 skip
= (type
== (N_DATA
| N_EXT
));
3366 case bfd_link_common_skip_all
:
3375 if (!(*info
->callbacks
3376 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3382 if (type
== (N_UNDF
| N_EXT
))
3386 value
= GET_WORD (abfd
, p
->e_value
);
3389 /* This symbol is common in the object from the archive
3391 if (h
->type
== bfd_link_hash_undefined
)
3396 symbfd
= h
->u
.undef
.abfd
;
3399 /* This symbol was created as undefined from
3400 outside BFD. We assume that we should link
3401 in the object file. This is done for the -u
3402 option in the linker. */
3403 if (!(*info
->callbacks
3404 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3409 /* Turn the current link symbol into a common
3410 symbol. It is already on the undefs list. */
3411 h
->type
= bfd_link_hash_common
;
3412 h
->u
.c
.p
= (struct bfd_link_hash_common_entry
*)
3413 bfd_hash_allocate (&info
->hash
->table
,
3414 sizeof (struct bfd_link_hash_common_entry
));
3415 if (h
->u
.c
.p
== NULL
)
3418 h
->u
.c
.size
= value
;
3420 /* FIXME: This isn't quite right. The maximum
3421 alignment of a common symbol should be set by the
3422 architecture of the output file, not of the input
3424 power
= bfd_log2 (value
);
3425 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3426 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3427 h
->u
.c
.p
->alignment_power
= power
;
3429 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3434 /* Adjust the size of the common symbol if
3436 if (value
> h
->u
.c
.size
)
3437 h
->u
.c
.size
= value
;
3447 /* This symbol is weak but defined. We must pull it in if
3448 the current link symbol is undefined, but we don't want
3449 it if the current link symbol is common. */
3450 if (h
->type
== bfd_link_hash_undefined
)
3452 if (!(*info
->callbacks
3453 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3461 /* We do not need this object file. */
3464 /* Check a single archive element to see if we need to include it in
3465 the link. *PNEEDED is set according to whether this element is
3466 needed in the link or not. This is called from
3467 _bfd_generic_link_add_archive_symbols. */
3470 aout_link_check_archive_element (bfd
*abfd
,
3471 struct bfd_link_info
*info
,
3472 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
3473 const char *name ATTRIBUTE_UNUSED
,
3474 bfd_boolean
*pneeded
)
3479 if (!aout_get_external_symbols (abfd
))
3483 if (!aout_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
3489 /* Potentially, the add_archive_element hook may have set a
3490 substitute BFD for us. */
3493 if (!info
->keep_memory
3494 && !aout_link_free_symbols (oldbfd
))
3496 if (!aout_get_external_symbols (abfd
))
3499 if (!aout_link_add_symbols (abfd
, info
))
3503 if (!info
->keep_memory
|| !needed
)
3505 if (!aout_link_free_symbols (abfd
))
3512 /* Given an a.out BFD, add symbols to the global hash table as
3516 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
3518 switch (bfd_get_format (abfd
))
3521 return aout_link_add_object_symbols (abfd
, info
);
3523 return _bfd_generic_link_add_archive_symbols
3524 (abfd
, info
, aout_link_check_archive_element
);
3526 bfd_set_error (bfd_error_wrong_format
);
3531 /* A hash table used for header files with N_BINCL entries. */
3533 struct aout_link_includes_table
3535 struct bfd_hash_table root
;
3538 /* A linked list of totals that we have found for a particular header
3541 struct aout_link_includes_totals
3543 struct aout_link_includes_totals
*next
;
3547 /* An entry in the header file hash table. */
3549 struct aout_link_includes_entry
3551 struct bfd_hash_entry root
;
3552 /* List of totals we have found for this file. */
3553 struct aout_link_includes_totals
*totals
;
3556 /* Look up an entry in an the header file hash table. */
3558 #define aout_link_includes_lookup(table, string, create, copy) \
3559 ((struct aout_link_includes_entry *) \
3560 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3562 /* During the final link step we need to pass around a bunch of
3563 information, so we do it in an instance of this structure. */
3565 struct aout_final_link_info
3567 /* General link information. */
3568 struct bfd_link_info
*info
;
3571 /* Reloc file positions. */
3572 file_ptr treloff
, dreloff
;
3573 /* File position of symbols. */
3576 struct bfd_strtab_hash
*strtab
;
3577 /* Header file hash table. */
3578 struct aout_link_includes_table includes
;
3579 /* A buffer large enough to hold the contents of any section. */
3581 /* A buffer large enough to hold the relocs of any section. */
3583 /* A buffer large enough to hold the symbol map of any input BFD. */
3585 /* A buffer large enough to hold output symbols of any input BFD. */
3586 struct external_nlist
*output_syms
;
3589 /* The function to create a new entry in the header file hash table. */
3591 static struct bfd_hash_entry
*
3592 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
3593 struct bfd_hash_table
*table
,
3596 struct aout_link_includes_entry
*ret
=
3597 (struct aout_link_includes_entry
*) entry
;
3599 /* Allocate the structure if it has not already been allocated by a
3602 ret
= (struct aout_link_includes_entry
*)
3603 bfd_hash_allocate (table
, sizeof (* ret
));
3607 /* Call the allocation method of the superclass. */
3608 ret
= ((struct aout_link_includes_entry
*)
3609 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3612 /* Set local fields. */
3616 return (struct bfd_hash_entry
*) ret
;
3619 /* Write out a symbol that was not associated with an a.out input
3623 aout_link_write_other_symbol (struct bfd_hash_entry
*bh
, void *data
)
3625 struct aout_link_hash_entry
*h
= (struct aout_link_hash_entry
*) bh
;
3626 struct aout_final_link_info
*flaginfo
= (struct aout_final_link_info
*) data
;
3630 struct external_nlist outsym
;
3634 if (h
->root
.type
== bfd_link_hash_warning
)
3636 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
3637 if (h
->root
.type
== bfd_link_hash_new
)
3641 output_bfd
= flaginfo
->output_bfd
;
3643 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
3645 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
3646 (output_bfd
, flaginfo
->info
, h
)))
3648 /* FIXME: No way to handle errors. */
3658 /* An indx of -2 means the symbol must be written. */
3660 && (flaginfo
->info
->strip
== strip_all
3661 || (flaginfo
->info
->strip
== strip_some
3662 && bfd_hash_lookup (flaginfo
->info
->keep_hash
, h
->root
.root
.string
,
3663 FALSE
, FALSE
) == NULL
)))
3666 switch (h
->root
.type
)
3669 case bfd_link_hash_warning
:
3671 /* Avoid variable not initialized warnings. */
3673 case bfd_link_hash_new
:
3674 /* This can happen for set symbols when sets are not being
3677 case bfd_link_hash_undefined
:
3678 type
= N_UNDF
| N_EXT
;
3681 case bfd_link_hash_defined
:
3682 case bfd_link_hash_defweak
:
3686 sec
= h
->root
.u
.def
.section
->output_section
;
3687 BFD_ASSERT (bfd_is_abs_section (sec
)
3688 || sec
->owner
== output_bfd
);
3689 if (sec
== obj_textsec (output_bfd
))
3690 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
3691 else if (sec
== obj_datasec (output_bfd
))
3692 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
3693 else if (sec
== obj_bsssec (output_bfd
))
3694 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
3696 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
3698 val
= (h
->root
.u
.def
.value
3700 + h
->root
.u
.def
.section
->output_offset
);
3703 case bfd_link_hash_common
:
3704 type
= N_UNDF
| N_EXT
;
3705 val
= h
->root
.u
.c
.size
;
3707 case bfd_link_hash_undefweak
:
3711 case bfd_link_hash_indirect
:
3712 /* We ignore these symbols, since the indirected symbol is
3713 already in the hash table. */
3717 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
3718 H_PUT_8 (output_bfd
, 0, outsym
.e_other
);
3719 H_PUT_16 (output_bfd
, 0, outsym
.e_desc
);
3720 indx
= add_to_stringtab (output_bfd
, flaginfo
->strtab
, h
->root
.root
.string
,
3722 if (indx
== - (bfd_size_type
) 1)
3723 /* FIXME: No way to handle errors. */
3726 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3727 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3729 amt
= EXTERNAL_NLIST_SIZE
;
3730 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0
3731 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3732 /* FIXME: No way to handle errors. */
3735 flaginfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
3736 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3737 ++obj_aout_external_sym_count (output_bfd
);
3742 /* Handle a link order which is supposed to generate a reloc. */
3745 aout_link_reloc_link_order (struct aout_final_link_info
*flaginfo
,
3747 struct bfd_link_order
*p
)
3749 struct bfd_link_order_reloc
*pr
;
3752 reloc_howto_type
*howto
;
3753 file_ptr
*reloff_ptr
= NULL
;
3754 struct reloc_std_external srel
;
3755 struct reloc_ext_external erel
;
3761 if (p
->type
== bfd_section_reloc_link_order
)
3764 if (bfd_is_abs_section (pr
->u
.section
))
3765 r_index
= N_ABS
| N_EXT
;
3768 BFD_ASSERT (pr
->u
.section
->owner
== flaginfo
->output_bfd
);
3769 r_index
= pr
->u
.section
->target_index
;
3774 struct aout_link_hash_entry
*h
;
3776 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3778 h
= ((struct aout_link_hash_entry
*)
3779 bfd_wrapped_link_hash_lookup (flaginfo
->output_bfd
, flaginfo
->info
,
3780 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3786 /* We decided to strip this symbol, but it turns out that we
3787 can't. Note that we lose the other and desc information
3788 here. I don't think that will ever matter for a global
3792 if (!aout_link_write_other_symbol (&h
->root
.root
, flaginfo
))
3798 (*flaginfo
->info
->callbacks
->unattached_reloc
)
3799 (flaginfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
3804 howto
= bfd_reloc_type_lookup (flaginfo
->output_bfd
, pr
->reloc
);
3807 bfd_set_error (bfd_error_bad_value
);
3811 if (o
== obj_textsec (flaginfo
->output_bfd
))
3812 reloff_ptr
= &flaginfo
->treloff
;
3813 else if (o
== obj_datasec (flaginfo
->output_bfd
))
3814 reloff_ptr
= &flaginfo
->dreloff
;
3818 if (obj_reloc_entry_size (flaginfo
->output_bfd
) == RELOC_STD_SIZE
)
3821 MY_put_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3831 r_pcrel
= (int) howto
->pc_relative
;
3832 r_baserel
= (howto
->type
& 8) != 0;
3833 r_jmptable
= (howto
->type
& 16) != 0;
3834 r_relative
= (howto
->type
& 32) != 0;
3835 r_length
= howto
->size
;
3837 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, srel
.r_address
);
3838 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3840 srel
.r_index
[0] = r_index
>> 16;
3841 srel
.r_index
[1] = r_index
>> 8;
3842 srel
.r_index
[2] = r_index
;
3844 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3845 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3846 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3847 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3848 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3849 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3853 srel
.r_index
[2] = r_index
>> 16;
3854 srel
.r_index
[1] = r_index
>> 8;
3855 srel
.r_index
[0] = r_index
;
3857 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3858 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3859 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3860 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3861 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3862 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3866 rel_ptr
= (void *) &srel
;
3868 /* We have to write the addend into the object file, since
3869 standard a.out relocs are in place. It would be more
3870 reliable if we had the current contents of the file here,
3871 rather than assuming zeroes, but we can't read the file since
3872 it was opened using bfd_openw. */
3873 if (pr
->addend
!= 0)
3876 bfd_reloc_status_type r
;
3880 size
= bfd_get_reloc_size (howto
);
3881 buf
= (bfd_byte
*) bfd_zmalloc (size
);
3882 if (buf
== NULL
&& size
!= 0)
3884 r
= MY_relocate_contents (howto
, flaginfo
->output_bfd
,
3885 (bfd_vma
) pr
->addend
, buf
);
3891 case bfd_reloc_outofrange
:
3893 case bfd_reloc_overflow
:
3894 (*flaginfo
->info
->callbacks
->reloc_overflow
)
3895 (flaginfo
->info
, NULL
,
3896 (p
->type
== bfd_section_reloc_link_order
3897 ? bfd_section_name (pr
->u
.section
)
3899 howto
->name
, pr
->addend
, NULL
, NULL
, (bfd_vma
) 0);
3902 ok
= bfd_set_section_contents (flaginfo
->output_bfd
, o
, (void *) buf
,
3903 (file_ptr
) p
->offset
, size
);
3911 #ifdef MY_put_ext_reloc
3912 MY_put_ext_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
3913 howto
, &erel
, pr
->addend
);
3915 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, erel
.r_address
);
3917 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3919 erel
.r_index
[0] = r_index
>> 16;
3920 erel
.r_index
[1] = r_index
>> 8;
3921 erel
.r_index
[2] = r_index
;
3923 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
3924 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
3928 erel
.r_index
[2] = r_index
>> 16;
3929 erel
.r_index
[1] = r_index
>> 8;
3930 erel
.r_index
[0] = r_index
;
3932 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
3933 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
3936 PUT_WORD (flaginfo
->output_bfd
, (bfd_vma
) pr
->addend
, erel
.r_addend
);
3937 #endif /* MY_put_ext_reloc */
3939 rel_ptr
= (void *) &erel
;
3942 amt
= obj_reloc_entry_size (flaginfo
->output_bfd
);
3943 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3944 || bfd_bwrite (rel_ptr
, amt
, flaginfo
->output_bfd
) != amt
)
3947 *reloff_ptr
+= obj_reloc_entry_size (flaginfo
->output_bfd
);
3949 /* Assert that the relocs have not run into the symbols, and that n
3950 the text relocs have not run into the data relocs. */
3951 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3952 && (reloff_ptr
!= &flaginfo
->treloff
3954 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3959 /* Get the section corresponding to a reloc index. */
3961 static INLINE asection
*
3962 aout_reloc_index_to_section (bfd
*abfd
, int indx
)
3964 switch (indx
& N_TYPE
)
3966 case N_TEXT
: return obj_textsec (abfd
);
3967 case N_DATA
: return obj_datasec (abfd
);
3968 case N_BSS
: return obj_bsssec (abfd
);
3970 case N_UNDF
: return bfd_abs_section_ptr
;
3976 /* Relocate an a.out section using standard a.out relocs. */
3979 aout_link_input_section_std (struct aout_final_link_info
*flaginfo
,
3981 asection
*input_section
,
3982 struct reloc_std_external
*relocs
,
3983 bfd_size_type rel_size
,
3986 bfd_boolean (*check_dynamic_reloc
)
3987 (struct bfd_link_info
*, bfd
*, asection
*,
3988 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3991 bfd_boolean relocatable
;
3992 struct external_nlist
*syms
;
3994 struct aout_link_hash_entry
**sym_hashes
;
3996 bfd_size_type reloc_count
;
3997 struct reloc_std_external
*rel
;
3998 struct reloc_std_external
*rel_end
;
4000 output_bfd
= flaginfo
->output_bfd
;
4001 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4003 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
4004 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4005 == output_bfd
->xvec
->header_byteorder
);
4007 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4008 syms
= obj_aout_external_syms (input_bfd
);
4009 strings
= obj_aout_external_strings (input_bfd
);
4010 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4011 symbol_map
= flaginfo
->symbol_map
;
4013 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
4015 rel_end
= rel
+ reloc_count
;
4016 for (; rel
< rel_end
; rel
++)
4023 reloc_howto_type
*howto
;
4024 struct aout_link_hash_entry
*h
= NULL
;
4026 bfd_reloc_status_type r
;
4028 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4030 #ifdef MY_reloc_howto
4031 howto
= MY_reloc_howto (input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
4037 unsigned int howto_idx
;
4039 if (bfd_header_big_endian (input_bfd
))
4041 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4042 | ((unsigned int) rel
->r_index
[1] << 8)
4044 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
4045 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
4046 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
4047 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
4048 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
4049 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
4050 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
4054 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4055 | ((unsigned int) rel
->r_index
[1] << 8)
4057 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
4058 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
4059 r_baserel
= (0 != (rel
->r_type
[0]
4060 & RELOC_STD_BITS_BASEREL_LITTLE
));
4061 r_jmptable
= (0 != (rel
->r_type
[0]
4062 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
4063 r_relative
= (0 != (rel
->r_type
[0]
4064 & RELOC_STD_BITS_RELATIVE_LITTLE
));
4065 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
4066 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
4069 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
4070 + 16 * r_jmptable
+ 32 * r_relative
);
4071 if (howto_idx
< TABLE_SIZE (howto_table_std
))
4072 howto
= howto_table_std
+ howto_idx
;
4080 _bfd_error_handler (_("%pB: unsupported relocation type"),
4082 bfd_set_error (bfd_error_bad_value
);
4088 /* We are generating a relocatable output file, and must
4089 modify the reloc accordingly. */
4092 /* If we know the symbol this relocation is against,
4093 convert it into a relocation against a section. This
4094 is what the native linker does. */
4095 h
= sym_hashes
[r_index
];
4097 && (h
->root
.type
== bfd_link_hash_defined
4098 || h
->root
.type
== bfd_link_hash_defweak
))
4100 asection
*output_section
;
4102 /* Change the r_extern value. */
4103 if (bfd_header_big_endian (output_bfd
))
4104 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
4106 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
4108 /* Compute a new r_index. */
4109 output_section
= h
->root
.u
.def
.section
->output_section
;
4110 if (output_section
== obj_textsec (output_bfd
))
4112 else if (output_section
== obj_datasec (output_bfd
))
4114 else if (output_section
== obj_bsssec (output_bfd
))
4119 /* Add the symbol value and the section VMA to the
4120 addend stored in the contents. */
4121 relocation
= (h
->root
.u
.def
.value
4122 + output_section
->vma
4123 + h
->root
.u
.def
.section
->output_offset
);
4127 /* We must change r_index according to the symbol
4129 r_index
= symbol_map
[r_index
];
4135 /* We decided to strip this symbol, but it
4136 turns out that we can't. Note that we
4137 lose the other and desc information here.
4138 I don't think that will ever matter for a
4144 if (!aout_link_write_other_symbol (&h
->root
.root
,
4154 name
= strings
+ GET_WORD (input_bfd
,
4155 syms
[r_index
].e_strx
);
4156 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4157 (flaginfo
->info
, name
,
4158 input_bfd
, input_section
, r_addr
);
4166 /* Write out the new r_index value. */
4167 if (bfd_header_big_endian (output_bfd
))
4169 rel
->r_index
[0] = r_index
>> 16;
4170 rel
->r_index
[1] = r_index
>> 8;
4171 rel
->r_index
[2] = r_index
;
4175 rel
->r_index
[2] = r_index
>> 16;
4176 rel
->r_index
[1] = r_index
>> 8;
4177 rel
->r_index
[0] = r_index
;
4184 /* This is a relocation against a section. We must
4185 adjust by the amount that the section moved. */
4186 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4187 relocation
= (section
->output_section
->vma
4188 + section
->output_offset
4192 /* Change the address of the relocation. */
4193 PUT_WORD (output_bfd
,
4194 r_addr
+ input_section
->output_offset
,
4197 /* Adjust a PC relative relocation by removing the reference
4198 to the original address in the section and including the
4199 reference to the new address. */
4201 relocation
-= (input_section
->output_section
->vma
4202 + input_section
->output_offset
4203 - input_section
->vma
);
4205 #ifdef MY_relocatable_reloc
4206 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4209 if (relocation
== 0)
4212 r
= MY_relocate_contents (howto
,
4213 input_bfd
, relocation
,
4220 /* We are generating an executable, and must do a full
4226 h
= sym_hashes
[r_index
];
4229 && (h
->root
.type
== bfd_link_hash_defined
4230 || h
->root
.type
== bfd_link_hash_defweak
))
4232 relocation
= (h
->root
.u
.def
.value
4233 + h
->root
.u
.def
.section
->output_section
->vma
4234 + h
->root
.u
.def
.section
->output_offset
);
4237 && h
->root
.type
== bfd_link_hash_undefweak
)
4249 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4250 relocation
= (section
->output_section
->vma
4251 + section
->output_offset
4254 relocation
+= input_section
->vma
;
4257 if (check_dynamic_reloc
!= NULL
)
4261 if (! ((*check_dynamic_reloc
)
4262 (flaginfo
->info
, input_bfd
, input_section
, h
,
4263 (void *) rel
, contents
, &skip
, &relocation
)))
4269 /* Now warn if a global symbol is undefined. We could not
4270 do this earlier, because check_dynamic_reloc might want
4271 to skip this reloc. */
4272 if (hundef
&& ! bfd_link_pic (flaginfo
->info
) && ! r_baserel
)
4277 name
= h
->root
.root
.string
;
4279 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4280 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4281 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4284 r
= MY_final_link_relocate (howto
,
4285 input_bfd
, input_section
,
4286 contents
, r_addr
, relocation
,
4290 if (r
!= bfd_reloc_ok
)
4295 case bfd_reloc_outofrange
:
4297 case bfd_reloc_overflow
:
4304 name
= strings
+ GET_WORD (input_bfd
,
4305 syms
[r_index
].e_strx
);
4310 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4311 name
= bfd_section_name (s
);
4313 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4314 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
4315 (bfd_vma
) 0, input_bfd
, input_section
, r_addr
);
4325 /* Relocate an a.out section using extended a.out relocs. */
4328 aout_link_input_section_ext (struct aout_final_link_info
*flaginfo
,
4330 asection
*input_section
,
4331 struct reloc_ext_external
*relocs
,
4332 bfd_size_type rel_size
,
4335 bfd_boolean (*check_dynamic_reloc
)
4336 (struct bfd_link_info
*, bfd
*, asection
*,
4337 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
4340 bfd_boolean relocatable
;
4341 struct external_nlist
*syms
;
4343 struct aout_link_hash_entry
**sym_hashes
;
4345 bfd_size_type reloc_count
;
4346 struct reloc_ext_external
*rel
;
4347 struct reloc_ext_external
*rel_end
;
4349 output_bfd
= flaginfo
->output_bfd
;
4350 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4352 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
4353 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4354 == output_bfd
->xvec
->header_byteorder
);
4356 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4357 syms
= obj_aout_external_syms (input_bfd
);
4358 strings
= obj_aout_external_strings (input_bfd
);
4359 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4360 symbol_map
= flaginfo
->symbol_map
;
4362 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
4364 rel_end
= rel
+ reloc_count
;
4365 for (; rel
< rel_end
; rel
++)
4370 unsigned int r_type
;
4372 struct aout_link_hash_entry
*h
= NULL
;
4373 asection
*r_section
= NULL
;
4376 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4378 if (bfd_header_big_endian (input_bfd
))
4380 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4381 | ((unsigned int) rel
->r_index
[1] << 8)
4383 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
4384 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
4385 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
4389 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4390 | ((unsigned int) rel
->r_index
[1] << 8)
4392 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
4393 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
4394 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
4397 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
4399 if (r_type
>= TABLE_SIZE (howto_table_ext
))
4401 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4403 bfd_set_error (bfd_error_bad_value
);
4409 /* We are generating a relocatable output file, and must
4410 modify the reloc accordingly. */
4412 || r_type
== (unsigned int) RELOC_BASE10
4413 || r_type
== (unsigned int) RELOC_BASE13
4414 || r_type
== (unsigned int) RELOC_BASE22
)
4416 /* If we know the symbol this relocation is against,
4417 convert it into a relocation against a section. This
4418 is what the native linker does. */
4419 if (r_type
== (unsigned int) RELOC_BASE10
4420 || r_type
== (unsigned int) RELOC_BASE13
4421 || r_type
== (unsigned int) RELOC_BASE22
)
4424 h
= sym_hashes
[r_index
];
4426 && (h
->root
.type
== bfd_link_hash_defined
4427 || h
->root
.type
== bfd_link_hash_defweak
))
4429 asection
*output_section
;
4431 /* Change the r_extern value. */
4432 if (bfd_header_big_endian (output_bfd
))
4433 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
4435 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
4437 /* Compute a new r_index. */
4438 output_section
= h
->root
.u
.def
.section
->output_section
;
4439 if (output_section
== obj_textsec (output_bfd
))
4441 else if (output_section
== obj_datasec (output_bfd
))
4443 else if (output_section
== obj_bsssec (output_bfd
))
4448 /* Add the symbol value and the section VMA to the
4450 relocation
= (h
->root
.u
.def
.value
4451 + output_section
->vma
4452 + h
->root
.u
.def
.section
->output_offset
);
4454 /* Now RELOCATION is the VMA of the final
4455 destination. If this is a PC relative reloc,
4456 then ADDEND is the negative of the source VMA.
4457 We want to set ADDEND to the difference between
4458 the destination VMA and the source VMA, which
4459 means we must adjust RELOCATION by the change in
4460 the source VMA. This is done below. */
4464 /* We must change r_index according to the symbol
4466 r_index
= symbol_map
[r_index
];
4472 /* We decided to strip this symbol, but it
4473 turns out that we can't. Note that we
4474 lose the other and desc information here.
4475 I don't think that will ever matter for a
4481 if (!aout_link_write_other_symbol (&h
->root
.root
,
4491 name
= strings
+ GET_WORD (input_bfd
,
4492 syms
[r_index
].e_strx
);
4493 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4494 (flaginfo
->info
, name
,
4495 input_bfd
, input_section
, r_addr
);
4502 /* If this is a PC relative reloc, then the addend
4503 is the negative of the source VMA. We must
4504 adjust it by the change in the source VMA. This
4508 /* Write out the new r_index value. */
4509 if (bfd_header_big_endian (output_bfd
))
4511 rel
->r_index
[0] = r_index
>> 16;
4512 rel
->r_index
[1] = r_index
>> 8;
4513 rel
->r_index
[2] = r_index
;
4517 rel
->r_index
[2] = r_index
>> 16;
4518 rel
->r_index
[1] = r_index
>> 8;
4519 rel
->r_index
[0] = r_index
;
4524 /* This is a relocation against a section. We must
4525 adjust by the amount that the section moved. */
4526 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4527 relocation
= (r_section
->output_section
->vma
4528 + r_section
->output_offset
4531 /* If this is a PC relative reloc, then the addend is
4532 the difference in VMA between the destination and the
4533 source. We have just adjusted for the change in VMA
4534 of the destination, so we must also adjust by the
4535 change in VMA of the source. This is done below. */
4538 /* As described above, we must always adjust a PC relative
4539 reloc by the change in VMA of the source. However, if
4540 pcrel_offset is set, then the addend does not include the
4541 location within the section, in which case we don't need
4542 to adjust anything. */
4543 if (howto_table_ext
[r_type
].pc_relative
4544 && ! howto_table_ext
[r_type
].pcrel_offset
)
4545 relocation
-= (input_section
->output_section
->vma
4546 + input_section
->output_offset
4547 - input_section
->vma
);
4549 /* Change the addend if necessary. */
4550 if (relocation
!= 0)
4551 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
4553 /* Change the address of the relocation. */
4554 PUT_WORD (output_bfd
,
4555 r_addr
+ input_section
->output_offset
,
4561 bfd_reloc_status_type r
;
4563 /* We are generating an executable, and must do a full
4569 h
= sym_hashes
[r_index
];
4572 && (h
->root
.type
== bfd_link_hash_defined
4573 || h
->root
.type
== bfd_link_hash_defweak
))
4575 relocation
= (h
->root
.u
.def
.value
4576 + h
->root
.u
.def
.section
->output_section
->vma
4577 + h
->root
.u
.def
.section
->output_offset
);
4580 && h
->root
.type
== bfd_link_hash_undefweak
)
4588 else if (r_type
== (unsigned int) RELOC_BASE10
4589 || r_type
== (unsigned int) RELOC_BASE13
4590 || r_type
== (unsigned int) RELOC_BASE22
)
4592 struct external_nlist
*sym
;
4595 /* For base relative relocs, r_index is always an index
4596 into the symbol table, even if r_extern is 0. */
4597 sym
= syms
+ r_index
;
4598 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4599 if ((type
& N_TYPE
) == N_TEXT
4601 r_section
= obj_textsec (input_bfd
);
4602 else if ((type
& N_TYPE
) == N_DATA
4604 r_section
= obj_datasec (input_bfd
);
4605 else if ((type
& N_TYPE
) == N_BSS
4607 r_section
= obj_bsssec (input_bfd
);
4608 else if ((type
& N_TYPE
) == N_ABS
4610 r_section
= bfd_abs_section_ptr
;
4613 relocation
= (r_section
->output_section
->vma
4614 + r_section
->output_offset
4615 + (GET_WORD (input_bfd
, sym
->e_value
)
4620 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4622 /* If this is a PC relative reloc, then R_ADDEND is the
4623 difference between the two vmas, or
4624 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4626 old_dest_sec == section->vma
4628 old_src_sec == input_section->vma
4630 old_src_off == r_addr
4632 _bfd_final_link_relocate expects RELOCATION +
4633 R_ADDEND to be the VMA of the destination minus
4634 r_addr (the minus r_addr is because this relocation
4635 is not pcrel_offset, which is a bit confusing and
4636 should, perhaps, be changed), or
4639 new_dest_sec == output_section->vma + output_offset
4640 We arrange for this to happen by setting RELOCATION to
4641 new_dest_sec + old_src_sec - old_dest_sec
4643 If this is not a PC relative reloc, then R_ADDEND is
4644 simply the VMA of the destination, so we set
4645 RELOCATION to the change in the destination VMA, or
4646 new_dest_sec - old_dest_sec
4648 relocation
= (r_section
->output_section
->vma
4649 + r_section
->output_offset
4651 if (howto_table_ext
[r_type
].pc_relative
)
4652 relocation
+= input_section
->vma
;
4655 if (check_dynamic_reloc
!= NULL
)
4659 if (! ((*check_dynamic_reloc
)
4660 (flaginfo
->info
, input_bfd
, input_section
, h
,
4661 (void *) rel
, contents
, &skip
, &relocation
)))
4667 /* Now warn if a global symbol is undefined. We could not
4668 do this earlier, because check_dynamic_reloc might want
4669 to skip this reloc. */
4671 && ! bfd_link_pic (flaginfo
->info
)
4672 && r_type
!= (unsigned int) RELOC_BASE10
4673 && r_type
!= (unsigned int) RELOC_BASE13
4674 && r_type
!= (unsigned int) RELOC_BASE22
)
4679 name
= h
->root
.root
.string
;
4681 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4682 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4683 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4686 if (r_type
!= (unsigned int) RELOC_SPARC_REV32
)
4687 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
4688 input_bfd
, input_section
,
4689 contents
, r_addr
, relocation
,
4695 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
4696 x
= x
+ relocation
+ r_addend
;
4697 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
4701 if (r
!= bfd_reloc_ok
)
4706 case bfd_reloc_outofrange
:
4708 case bfd_reloc_overflow
:
4715 || r_type
== (unsigned int) RELOC_BASE10
4716 || r_type
== (unsigned int) RELOC_BASE13
4717 || r_type
== (unsigned int) RELOC_BASE22
)
4718 name
= strings
+ GET_WORD (input_bfd
,
4719 syms
[r_index
].e_strx
);
4724 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4725 name
= bfd_section_name (s
);
4727 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4728 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
,
4729 howto_table_ext
[r_type
].name
,
4730 r_addend
, input_bfd
, input_section
, r_addr
);
4741 /* Link an a.out section into the output file. */
4744 aout_link_input_section (struct aout_final_link_info
*flaginfo
,
4746 asection
*input_section
,
4747 file_ptr
*reloff_ptr
,
4748 bfd_size_type rel_size
)
4750 bfd_size_type input_size
;
4753 /* Get the section contents. */
4754 input_size
= input_section
->size
;
4755 if (! bfd_get_section_contents (input_bfd
, input_section
,
4756 (void *) flaginfo
->contents
,
4757 (file_ptr
) 0, input_size
))
4760 /* Read in the relocs if we haven't already done it. */
4761 if (aout_section_data (input_section
) != NULL
4762 && aout_section_data (input_section
)->relocs
!= NULL
)
4763 relocs
= aout_section_data (input_section
)->relocs
;
4766 relocs
= flaginfo
->relocs
;
4769 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4770 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
4775 /* Relocate the section contents. */
4776 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4778 if (! aout_link_input_section_std (flaginfo
, input_bfd
, input_section
,
4779 (struct reloc_std_external
*) relocs
,
4780 rel_size
, flaginfo
->contents
))
4785 if (! aout_link_input_section_ext (flaginfo
, input_bfd
, input_section
,
4786 (struct reloc_ext_external
*) relocs
,
4787 rel_size
, flaginfo
->contents
))
4791 /* Write out the section contents. */
4792 if (! bfd_set_section_contents (flaginfo
->output_bfd
,
4793 input_section
->output_section
,
4794 (void *) flaginfo
->contents
,
4795 (file_ptr
) input_section
->output_offset
,
4799 /* If we are producing relocatable output, the relocs were
4800 modified, and we now write them out. */
4801 if (bfd_link_relocatable (flaginfo
->info
) && rel_size
> 0)
4803 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4805 if (bfd_bwrite (relocs
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
4807 *reloff_ptr
+= rel_size
;
4809 /* Assert that the relocs have not run into the symbols, and
4810 that if these are the text relocs they have not run into the
4812 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
4813 && (reloff_ptr
!= &flaginfo
->treloff
4815 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
4821 /* Adjust and write out the symbols for an a.out file. Set the new
4822 symbol indices into a symbol_map. */
4825 aout_link_write_symbols (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
4828 bfd_size_type sym_count
;
4830 enum bfd_link_strip strip
;
4831 enum bfd_link_discard discard
;
4832 struct external_nlist
*outsym
;
4833 bfd_size_type strtab_index
;
4834 struct external_nlist
*sym
;
4835 struct external_nlist
*sym_end
;
4836 struct aout_link_hash_entry
**sym_hash
;
4839 bfd_boolean skip_next
;
4841 output_bfd
= flaginfo
->output_bfd
;
4842 sym_count
= obj_aout_external_sym_count (input_bfd
);
4843 strings
= obj_aout_external_strings (input_bfd
);
4844 strip
= flaginfo
->info
->strip
;
4845 discard
= flaginfo
->info
->discard
;
4846 outsym
= flaginfo
->output_syms
;
4848 /* First write out a symbol for this object file, unless we are
4849 discarding such symbols. */
4850 if (strip
!= strip_all
4851 && (strip
!= strip_some
4852 || bfd_hash_lookup (flaginfo
->info
->keep_hash
, input_bfd
->filename
,
4853 FALSE
, FALSE
) != NULL
)
4854 && discard
!= discard_all
)
4856 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4857 H_PUT_8 (output_bfd
, 0, outsym
->e_other
);
4858 H_PUT_16 (output_bfd
, 0, outsym
->e_desc
);
4859 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4860 input_bfd
->filename
, FALSE
);
4861 if (strtab_index
== (bfd_size_type
) -1)
4863 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4864 PUT_WORD (output_bfd
,
4865 (bfd_section_vma (obj_textsec (input_bfd
)->output_section
)
4866 + obj_textsec (input_bfd
)->output_offset
),
4868 ++obj_aout_external_sym_count (output_bfd
);
4874 sym
= obj_aout_external_syms (input_bfd
);
4875 sym_end
= sym
+ sym_count
;
4876 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4877 symbol_map
= flaginfo
->symbol_map
;
4878 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4879 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4883 struct aout_link_hash_entry
*h
;
4889 /* We set *symbol_map to 0 above for all symbols. If it has
4890 already been set to -1 for this symbol, it means that we are
4891 discarding it because it appears in a duplicate header file.
4892 See the N_BINCL code below. */
4893 if (*symbol_map
== -1)
4896 /* Initialize *symbol_map to -1, which means that the symbol was
4897 not copied into the output file. We will change it later if
4898 we do copy the symbol over. */
4901 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4902 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4908 /* Pass this symbol through. It is the target of an
4909 indirect or warning symbol. */
4910 val
= GET_WORD (input_bfd
, sym
->e_value
);
4915 /* Skip this symbol, which is the target of an indirect
4916 symbol that we have changed to no longer be an indirect
4923 struct aout_link_hash_entry
*hresolve
;
4925 /* We have saved the hash table entry for this symbol, if
4926 there is one. Note that we could just look it up again
4927 in the hash table, provided we first check that it is an
4931 /* Use the name from the hash table, in case the symbol was
4934 && h
->root
.type
!= bfd_link_hash_warning
)
4935 name
= h
->root
.root
.string
;
4937 /* If this is an indirect or warning symbol, then change
4938 hresolve to the base symbol. We also change *sym_hash so
4939 that the relocation routines relocate against the real
4942 if (h
!= (struct aout_link_hash_entry
*) NULL
4943 && (h
->root
.type
== bfd_link_hash_indirect
4944 || h
->root
.type
== bfd_link_hash_warning
))
4946 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4947 while (hresolve
->root
.type
== bfd_link_hash_indirect
4948 || hresolve
->root
.type
== bfd_link_hash_warning
)
4949 hresolve
= ((struct aout_link_hash_entry
*)
4950 hresolve
->root
.u
.i
.link
);
4951 *sym_hash
= hresolve
;
4954 /* If the symbol has already been written out, skip it. */
4958 if ((type
& N_TYPE
) == N_INDR
4959 || type
== N_WARNING
)
4961 *symbol_map
= h
->indx
;
4965 /* See if we are stripping this symbol. */
4971 case strip_debugger
:
4972 if ((type
& N_STAB
) != 0)
4976 if (bfd_hash_lookup (flaginfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4991 /* Get the value of the symbol. */
4992 if ((type
& N_TYPE
) == N_TEXT
4994 symsec
= obj_textsec (input_bfd
);
4995 else if ((type
& N_TYPE
) == N_DATA
4997 symsec
= obj_datasec (input_bfd
);
4998 else if ((type
& N_TYPE
) == N_BSS
5000 symsec
= obj_bsssec (input_bfd
);
5001 else if ((type
& N_TYPE
) == N_ABS
5003 symsec
= bfd_abs_section_ptr
;
5004 else if (((type
& N_TYPE
) == N_INDR
5005 && (hresolve
== NULL
5006 || (hresolve
->root
.type
!= bfd_link_hash_defined
5007 && hresolve
->root
.type
!= bfd_link_hash_defweak
5008 && hresolve
->root
.type
!= bfd_link_hash_common
)))
5009 || type
== N_WARNING
)
5011 /* Pass the next symbol through unchanged. The
5012 condition above for indirect symbols is so that if
5013 the indirect symbol was defined, we output it with
5014 the correct definition so the debugger will
5017 val
= GET_WORD (input_bfd
, sym
->e_value
);
5020 else if ((type
& N_STAB
) != 0)
5022 val
= GET_WORD (input_bfd
, sym
->e_value
);
5027 /* If we get here with an indirect symbol, it means that
5028 we are outputting it with a real definition. In such
5029 a case we do not want to output the next symbol,
5030 which is the target of the indirection. */
5031 if ((type
& N_TYPE
) == N_INDR
)
5036 /* We need to get the value from the hash table. We use
5037 hresolve so that if we have defined an indirect
5038 symbol we output the final definition. */
5041 switch (type
& N_TYPE
)
5044 symsec
= obj_textsec (input_bfd
);
5047 symsec
= obj_datasec (input_bfd
);
5050 symsec
= obj_bsssec (input_bfd
);
5053 symsec
= bfd_abs_section_ptr
;
5060 else if (hresolve
->root
.type
== bfd_link_hash_defined
5061 || hresolve
->root
.type
== bfd_link_hash_defweak
)
5063 asection
*input_section
;
5064 asection
*output_section
;
5066 /* This case usually means a common symbol which was
5067 turned into a defined symbol. */
5068 input_section
= hresolve
->root
.u
.def
.section
;
5069 output_section
= input_section
->output_section
;
5070 BFD_ASSERT (bfd_is_abs_section (output_section
)
5071 || output_section
->owner
== output_bfd
);
5072 val
= (hresolve
->root
.u
.def
.value
5073 + bfd_section_vma (output_section
)
5074 + input_section
->output_offset
);
5076 /* Get the correct type based on the section. If
5077 this is a constructed set, force it to be
5078 globally visible. */
5087 if (output_section
== obj_textsec (output_bfd
))
5088 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5091 else if (output_section
== obj_datasec (output_bfd
))
5092 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5095 else if (output_section
== obj_bsssec (output_bfd
))
5096 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5100 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5104 else if (hresolve
->root
.type
== bfd_link_hash_common
)
5105 val
= hresolve
->root
.u
.c
.size
;
5106 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
5115 val
= (symsec
->output_section
->vma
5116 + symsec
->output_offset
5117 + (GET_WORD (input_bfd
, sym
->e_value
)
5120 /* If this is a global symbol set the written flag, and if
5121 it is a local symbol see if we should discard it. */
5125 h
->indx
= obj_aout_external_sym_count (output_bfd
);
5127 else if ((type
& N_TYPE
) != N_SETT
5128 && (type
& N_TYPE
) != N_SETD
5129 && (type
& N_TYPE
) != N_SETB
5130 && (type
& N_TYPE
) != N_SETA
)
5135 case discard_sec_merge
:
5138 if ((type
& N_STAB
) == 0
5139 && bfd_is_local_label_name (input_bfd
, name
))
5153 /* An N_BINCL symbol indicates the start of the stabs
5154 entries for a header file. We need to scan ahead to the
5155 next N_EINCL symbol, ignoring nesting, adding up all the
5156 characters in the symbol names, not including the file
5157 numbers in types (the first number after an open
5159 if (type
== (int) N_BINCL
)
5161 struct external_nlist
*incl_sym
;
5163 struct aout_link_includes_entry
*incl_entry
;
5164 struct aout_link_includes_totals
*t
;
5168 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
5172 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5173 if (incl_type
== (int) N_EINCL
)
5179 else if (incl_type
== (int) N_BINCL
)
5185 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
5186 for (; *s
!= '\0'; s
++)
5191 /* Skip the file number. */
5193 while (ISDIGIT (*s
))
5201 /* If we have already included a header file with the
5202 same value, then replace this one with an N_EXCL
5204 copy
= (bfd_boolean
) (! flaginfo
->info
->keep_memory
);
5205 incl_entry
= aout_link_includes_lookup (&flaginfo
->includes
,
5207 if (incl_entry
== NULL
)
5209 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
5210 if (t
->total
== val
)
5214 /* This is the first time we have seen this header
5215 file with this set of stabs strings. */
5216 t
= (struct aout_link_includes_totals
*)
5217 bfd_hash_allocate (&flaginfo
->includes
.root
,
5222 t
->next
= incl_entry
->totals
;
5223 incl_entry
->totals
= t
;
5229 /* This is a duplicate header file. We must change
5230 it to be an N_EXCL entry, and mark all the
5231 included symbols to prevent outputting them. */
5232 type
= (int) N_EXCL
;
5235 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
5237 incl_sym
++, incl_map
++)
5241 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5242 if (incl_type
== (int) N_EINCL
)
5251 else if (incl_type
== (int) N_BINCL
)
5260 /* Copy this symbol into the list of symbols we are going to
5262 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
5263 H_PUT_8 (output_bfd
, H_GET_8 (input_bfd
, sym
->e_other
), outsym
->e_other
);
5264 H_PUT_16 (output_bfd
, H_GET_16 (input_bfd
, sym
->e_desc
), outsym
->e_desc
);
5266 if (! flaginfo
->info
->keep_memory
)
5268 /* name points into a string table which we are going to
5269 free. If there is a hash table entry, use that string.
5270 Otherwise, copy name into memory. */
5272 name
= h
->root
.root
.string
;
5276 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
5278 if (strtab_index
== (bfd_size_type
) -1)
5280 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
5281 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
5282 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
5283 ++obj_aout_external_sym_count (output_bfd
);
5287 /* Write out the output symbols we have just constructed. */
5288 if (outsym
> flaginfo
->output_syms
)
5290 bfd_size_type outsym_size
;
5292 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0)
5294 outsym_size
= outsym
- flaginfo
->output_syms
;
5295 outsym_size
*= EXTERNAL_NLIST_SIZE
;
5296 if (bfd_bwrite ((void *) flaginfo
->output_syms
, outsym_size
, output_bfd
)
5299 flaginfo
->symoff
+= outsym_size
;
5305 /* Link an a.out input BFD into the output file. */
5308 aout_link_input_bfd (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
5310 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
5312 /* If this is a dynamic object, it may need special handling. */
5313 if ((input_bfd
->flags
& DYNAMIC
) != 0
5314 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
5315 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
5316 (flaginfo
->info
, input_bfd
));
5318 /* Get the symbols. We probably have them already, unless
5319 flaginfo->info->keep_memory is FALSE. */
5320 if (! aout_get_external_symbols (input_bfd
))
5323 /* Write out the symbols and get a map of the new indices. The map
5324 is placed into flaginfo->symbol_map. */
5325 if (! aout_link_write_symbols (flaginfo
, input_bfd
))
5328 /* Relocate and write out the sections. These functions use the
5329 symbol map created by aout_link_write_symbols. The linker_mark
5330 field will be set if these sections are to be included in the
5331 link, which will normally be the case. */
5332 if (obj_textsec (input_bfd
)->linker_mark
)
5334 if (! aout_link_input_section (flaginfo
, input_bfd
,
5335 obj_textsec (input_bfd
),
5337 exec_hdr (input_bfd
)->a_trsize
))
5340 if (obj_datasec (input_bfd
)->linker_mark
)
5342 if (! aout_link_input_section (flaginfo
, input_bfd
,
5343 obj_datasec (input_bfd
),
5345 exec_hdr (input_bfd
)->a_drsize
))
5349 /* If we are not keeping memory, we don't need the symbols any
5350 longer. We still need them if we are keeping memory, because the
5351 strings in the hash table point into them. */
5352 if (! flaginfo
->info
->keep_memory
)
5354 if (! aout_link_free_symbols (input_bfd
))
5361 /* Do the final link step. This is called on the output BFD. The
5362 INFO structure should point to a list of BFDs linked through the
5363 link.next field which can be used to find each BFD which takes part
5364 in the output. Also, each section in ABFD should point to a list
5365 of bfd_link_order structures which list all the input sections for
5366 the output section. */
5369 NAME (aout
, final_link
) (bfd
*abfd
,
5370 struct bfd_link_info
*info
,
5371 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
5373 struct aout_final_link_info aout_info
;
5374 bfd_boolean includes_hash_initialized
= FALSE
;
5376 bfd_size_type trsize
, drsize
;
5377 bfd_size_type max_contents_size
;
5378 bfd_size_type max_relocs_size
;
5379 bfd_size_type max_sym_count
;
5380 struct bfd_link_order
*p
;
5382 bfd_boolean have_link_order_relocs
;
5384 if (bfd_link_pic (info
))
5385 abfd
->flags
|= DYNAMIC
;
5387 aout_info
.info
= info
;
5388 aout_info
.output_bfd
= abfd
;
5389 aout_info
.contents
= NULL
;
5390 aout_info
.relocs
= NULL
;
5391 aout_info
.symbol_map
= NULL
;
5392 aout_info
.output_syms
= NULL
;
5394 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
5395 aout_link_includes_newfunc
,
5396 sizeof (struct aout_link_includes_entry
),
5399 includes_hash_initialized
= TRUE
;
5401 /* Figure out the largest section size. Also, if generating
5402 relocatable output, count the relocs. */
5405 max_contents_size
= 0;
5406 max_relocs_size
= 0;
5408 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5412 if (bfd_link_relocatable (info
))
5414 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5416 trsize
+= exec_hdr (sub
)->a_trsize
;
5417 drsize
+= exec_hdr (sub
)->a_drsize
;
5421 /* FIXME: We need to identify the .text and .data sections
5422 and call get_reloc_upper_bound and canonicalize_reloc to
5423 work out the number of relocs needed, and then multiply
5424 by the reloc size. */
5426 /* xgettext:c-format */
5427 (_("%pB: relocatable link from %s to %s not supported"),
5428 abfd
, sub
->xvec
->name
, abfd
->xvec
->name
);
5429 bfd_set_error (bfd_error_invalid_operation
);
5434 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5436 sz
= obj_textsec (sub
)->size
;
5437 if (sz
> max_contents_size
)
5438 max_contents_size
= sz
;
5439 sz
= obj_datasec (sub
)->size
;
5440 if (sz
> max_contents_size
)
5441 max_contents_size
= sz
;
5443 sz
= exec_hdr (sub
)->a_trsize
;
5444 if (sz
> max_relocs_size
)
5445 max_relocs_size
= sz
;
5446 sz
= exec_hdr (sub
)->a_drsize
;
5447 if (sz
> max_relocs_size
)
5448 max_relocs_size
= sz
;
5450 sz
= obj_aout_external_sym_count (sub
);
5451 if (sz
> max_sym_count
)
5456 if (bfd_link_relocatable (info
))
5458 if (obj_textsec (abfd
) != NULL
)
5459 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
5460 ->map_head
.link_order
)
5461 * obj_reloc_entry_size (abfd
));
5462 if (obj_datasec (abfd
) != NULL
)
5463 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
5464 ->map_head
.link_order
)
5465 * obj_reloc_entry_size (abfd
));
5468 exec_hdr (abfd
)->a_trsize
= trsize
;
5469 exec_hdr (abfd
)->a_drsize
= drsize
;
5471 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
5473 /* Adjust the section sizes and vmas according to the magic number.
5474 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5475 filepos for each section. */
5476 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
5479 /* The relocation and symbol file positions differ among a.out
5480 targets. We are passed a callback routine from the backend
5481 specific code to handle this.
5482 FIXME: At this point we do not know how much space the symbol
5483 table will require. This will not work for any (nonstandard)
5484 a.out target that needs to know the symbol table size before it
5485 can compute the relocation file positions. */
5486 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
5488 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
5489 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
5490 obj_sym_filepos (abfd
) = aout_info
.symoff
;
5492 /* We keep a count of the symbols as we output them. */
5493 obj_aout_external_sym_count (abfd
) = 0;
5495 /* We accumulate the string table as we write out the symbols. */
5496 aout_info
.strtab
= _bfd_stringtab_init ();
5497 if (aout_info
.strtab
== NULL
)
5500 /* Allocate buffers to hold section contents and relocs. */
5501 aout_info
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
5502 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
5503 aout_info
.symbol_map
= (int *) bfd_malloc (max_sym_count
* sizeof (int));
5504 aout_info
.output_syms
= (struct external_nlist
*)
5505 bfd_malloc ((max_sym_count
+ 1) * sizeof (struct external_nlist
));
5506 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
5507 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
5508 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
5509 || aout_info
.output_syms
== NULL
)
5512 /* If we have a symbol named __DYNAMIC, force it out now. This is
5513 required by SunOS. Doing this here rather than in sunos.c is a
5514 hack, but it's easier than exporting everything which would be
5517 struct aout_link_hash_entry
*h
;
5519 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
5520 FALSE
, FALSE
, FALSE
);
5522 aout_link_write_other_symbol (&h
->root
.root
, &aout_info
);
5525 /* The most time efficient way to do the link would be to read all
5526 the input object files into memory and then sort out the
5527 information into the output file. Unfortunately, that will
5528 probably use too much memory. Another method would be to step
5529 through everything that composes the text section and write it
5530 out, and then everything that composes the data section and write
5531 it out, and then write out the relocs, and then write out the
5532 symbols. Unfortunately, that requires reading stuff from each
5533 input file several times, and we will not be able to keep all the
5534 input files open simultaneously, and reopening them will be slow.
5536 What we do is basically process one input file at a time. We do
5537 everything we need to do with an input file once--copy over the
5538 section contents, handle the relocation information, and write
5539 out the symbols--and then we throw away the information we read
5540 from it. This approach requires a lot of lseeks of the output
5541 file, which is unfortunate but still faster than reopening a lot
5544 We use the output_has_begun field of the input BFDs to see
5545 whether we have already handled it. */
5546 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5547 sub
->output_has_begun
= FALSE
;
5549 /* Mark all sections which are to be included in the link. This
5550 will normally be every section. We need to do this so that we
5551 can identify any sections which the linker has decided to not
5553 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5555 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5556 if (p
->type
== bfd_indirect_link_order
)
5557 p
->u
.indirect
.section
->linker_mark
= TRUE
;
5560 have_link_order_relocs
= FALSE
;
5561 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5563 for (p
= o
->map_head
.link_order
;
5567 if (p
->type
== bfd_indirect_link_order
5568 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
5569 == bfd_target_aout_flavour
))
5573 input_bfd
= p
->u
.indirect
.section
->owner
;
5574 if (! input_bfd
->output_has_begun
)
5576 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
5578 input_bfd
->output_has_begun
= TRUE
;
5581 else if (p
->type
== bfd_section_reloc_link_order
5582 || p
->type
== bfd_symbol_reloc_link_order
)
5584 /* These are handled below. */
5585 have_link_order_relocs
= TRUE
;
5589 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
5595 /* Write out any symbols that we have not already written out. */
5596 bfd_hash_traverse (&info
->hash
->table
,
5597 aout_link_write_other_symbol
,
5600 /* Now handle any relocs we were asked to create by the linker.
5601 These did not come from any input file. We must do these after
5602 we have written out all the symbols, so that we know the symbol
5604 if (have_link_order_relocs
)
5606 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5608 for (p
= o
->map_head
.link_order
;
5612 if (p
->type
== bfd_section_reloc_link_order
5613 || p
->type
== bfd_symbol_reloc_link_order
)
5615 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
5622 if (aout_info
.contents
!= NULL
)
5624 free (aout_info
.contents
);
5625 aout_info
.contents
= NULL
;
5627 if (aout_info
.relocs
!= NULL
)
5629 free (aout_info
.relocs
);
5630 aout_info
.relocs
= NULL
;
5632 if (aout_info
.symbol_map
!= NULL
)
5634 free (aout_info
.symbol_map
);
5635 aout_info
.symbol_map
= NULL
;
5637 if (aout_info
.output_syms
!= NULL
)
5639 free (aout_info
.output_syms
);
5640 aout_info
.output_syms
= NULL
;
5642 if (includes_hash_initialized
)
5644 bfd_hash_table_free (&aout_info
.includes
.root
);
5645 includes_hash_initialized
= FALSE
;
5648 /* Finish up any dynamic linking we may be doing. */
5649 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
5651 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
5655 /* Update the header information. */
5656 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
5657 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
5658 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
5659 obj_textsec (abfd
)->reloc_count
=
5660 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
5661 obj_datasec (abfd
)->reloc_count
=
5662 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
5664 /* Write out the string table, unless there are no symbols. */
5665 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0)
5667 if (abfd
->symcount
> 0)
5669 if (!emit_stringtab (abfd
, aout_info
.strtab
))
5674 bfd_byte b
[BYTES_IN_WORD
];
5676 memset (b
, 0, BYTES_IN_WORD
);
5677 if (bfd_bwrite (b
, (bfd_size_type
) BYTES_IN_WORD
, abfd
) != BYTES_IN_WORD
)
5684 if (aout_info
.contents
!= NULL
)
5685 free (aout_info
.contents
);
5686 if (aout_info
.relocs
!= NULL
)
5687 free (aout_info
.relocs
);
5688 if (aout_info
.symbol_map
!= NULL
)
5689 free (aout_info
.symbol_map
);
5690 if (aout_info
.output_syms
!= NULL
)
5691 free (aout_info
.output_syms
);
5692 if (includes_hash_initialized
)
5693 bfd_hash_table_free (&aout_info
.includes
.root
);