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
;
894 asection
*text
= obj_textsec (abfd
);
895 asection
*data
= obj_datasec (abfd
);
896 asection
*bss
= obj_bsssec (abfd
);
900 if (!text
->user_set_vma
)
905 pos
+= execp
->a_text
;
906 vma
+= execp
->a_text
;
909 if (!data
->user_set_vma
)
917 execp
->a_text
+= pad
;
924 if (!bss
->user_set_vma
)
932 /* The VMA of the .bss section is set by the VMA of the
933 .data section plus the size of the .data section. We may
934 need to add padding bytes to make this true. */
935 pad
= bss
->vma
- vma
;
940 execp
->a_data
= data
->size
+ pad
;
942 execp
->a_bss
= bss
->size
;
944 N_SET_MAGIC (execp
, OMAGIC
);
948 adjust_z_magic (bfd
*abfd
, struct internal_exec
*execp
)
950 bfd_size_type data_pad
, text_pad
;
952 const struct aout_backend_data
*abdp
;
953 /* TRUE if text includes exec header. */
955 asection
*text
= obj_textsec (abfd
);
956 asection
*data
= obj_datasec (abfd
);
957 asection
*bss
= obj_bsssec (abfd
);
959 abdp
= aout_backend_info (abfd
);
963 && (abdp
->text_includes_header
964 || obj_aout_subformat (abfd
) == q_magic_format
));
965 text
->filepos
= (ztih
966 ? adata (abfd
).exec_bytes_size
967 : adata (abfd
).zmagic_disk_block_size
);
968 if (!text
->user_set_vma
)
970 /* ?? Do we really need to check for relocs here? */
971 text
->vma
= ((abfd
->flags
& HAS_RELOC
)
974 ? abdp
->default_text_vma
+ adata (abfd
).exec_bytes_size
975 : abdp
->default_text_vma
));
980 /* The .text section is being loaded at an unusual address. We
981 may need to pad it such that the .data section starts at a page
984 text_pad
= ((text
->filepos
- text
->vma
)
985 & (adata (abfd
).page_size
- 1));
987 text_pad
= (-text
->vma
988 & (adata (abfd
).page_size
- 1));
991 /* Find start of data. */
994 text_end
= text
->filepos
+ execp
->a_text
;
995 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
999 /* Note that if page_size == zmagic_disk_block_size, then
1000 filepos == page_size, and this case is the same as the ztih
1002 text_end
= execp
->a_text
;
1003 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
1004 text_end
+= text
->filepos
;
1006 execp
->a_text
+= text_pad
;
1009 if (!data
->user_set_vma
)
1012 vma
= text
->vma
+ execp
->a_text
;
1013 data
->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1015 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
1017 text_pad
= data
->vma
- (text
->vma
+ execp
->a_text
);
1018 /* Only pad the text section if the data
1019 section is going to be placed after it. */
1021 execp
->a_text
+= text_pad
;
1023 data
->filepos
= text
->filepos
+ execp
->a_text
;
1025 /* Fix up exec header while we're at it. */
1026 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
1027 execp
->a_text
+= adata (abfd
).exec_bytes_size
;
1028 if (obj_aout_subformat (abfd
) == q_magic_format
)
1029 N_SET_MAGIC (execp
, QMAGIC
);
1031 N_SET_MAGIC (execp
, ZMAGIC
);
1033 /* Spec says data section should be rounded up to page boundary. */
1034 execp
->a_data
= align_power (data
->size
, bss
->alignment_power
);
1035 execp
->a_data
= BFD_ALIGN (execp
->a_data
, adata (abfd
).page_size
);
1036 data_pad
= execp
->a_data
- data
->size
;
1039 if (!bss
->user_set_vma
)
1040 bss
->vma
= data
->vma
+ execp
->a_data
;
1041 /* If the BSS immediately follows the data section and extra space
1042 in the page is left after the data section, fudge data
1043 in the header so that the bss section looks smaller by that
1044 amount. We'll start the bss section there, and lie to the OS.
1045 (Note that a linker script, as well as the above assignment,
1046 could have explicitly set the BSS vma to immediately follow
1047 the data section.) */
1048 if (align_power (bss
->vma
, bss
->alignment_power
) == data
->vma
+ execp
->a_data
)
1049 execp
->a_bss
= data_pad
> bss
->size
? 0 : bss
->size
- data_pad
;
1051 execp
->a_bss
= bss
->size
;
1055 adjust_n_magic (bfd
*abfd
, struct internal_exec
*execp
)
1057 file_ptr pos
= adata (abfd
).exec_bytes_size
;
1060 asection
*text
= obj_textsec (abfd
);
1061 asection
*data
= obj_datasec (abfd
);
1062 asection
*bss
= obj_bsssec (abfd
);
1065 text
->filepos
= pos
;
1066 if (!text
->user_set_vma
)
1070 pos
+= execp
->a_text
;
1071 vma
+= execp
->a_text
;
1074 data
->filepos
= pos
;
1075 if (!data
->user_set_vma
)
1076 data
->vma
= BFD_ALIGN (vma
, adata (abfd
).segment_size
);
1079 /* Since BSS follows data immediately, see if it needs alignment. */
1081 pad
= align_power (vma
, bss
->alignment_power
) - vma
;
1082 execp
->a_data
= data
->size
+ pad
;
1083 pos
+= execp
->a_data
;
1086 if (!bss
->user_set_vma
)
1091 /* Fix up exec header. */
1092 execp
->a_bss
= bss
->size
;
1093 N_SET_MAGIC (execp
, NMAGIC
);
1097 NAME (aout
, adjust_sizes_and_vmas
) (bfd
*abfd
)
1099 struct internal_exec
*execp
= exec_hdr (abfd
);
1101 if (! NAME (aout
, make_sections
) (abfd
))
1104 if (adata (abfd
).magic
!= undecided_magic
)
1107 execp
->a_text
= align_power (obj_textsec (abfd
)->size
,
1108 obj_textsec (abfd
)->alignment_power
);
1110 /* Rule (heuristic) for when to pad to a new page. Note that there
1111 are (at least) two ways demand-paged (ZMAGIC) files have been
1112 handled. Most Berkeley-based systems start the text segment at
1113 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1114 segment right after the exec header; the latter is counted in the
1115 text segment size, and is paged in by the kernel with the rest of
1118 /* This perhaps isn't the right way to do this, but made it simpler for me
1119 to understand enough to implement it. Better would probably be to go
1120 right from BFD flags to alignment/positioning characteristics. But the
1121 old code was sloppy enough about handling the flags, and had enough
1122 other magic, that it was a little hard for me to understand. I think
1123 I understand it better now, but I haven't time to do the cleanup this
1126 if (abfd
->flags
& D_PAGED
)
1127 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1128 adata (abfd
).magic
= z_magic
;
1129 else if (abfd
->flags
& WP_TEXT
)
1130 adata (abfd
).magic
= n_magic
;
1132 adata (abfd
).magic
= o_magic
;
1134 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1136 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1138 switch (adata (abfd
).magic
)
1140 case n_magic
: str
= "NMAGIC"; break;
1141 case o_magic
: str
= "OMAGIC"; break;
1142 case z_magic
: str
= "ZMAGIC"; break;
1147 obj_textsec (abfd
)->vma
, obj_textsec (abfd
)->size
,
1148 obj_textsec (abfd
)->alignment_power
,
1149 obj_datasec (abfd
)->vma
, obj_datasec (abfd
)->size
,
1150 obj_datasec (abfd
)->alignment_power
,
1151 obj_bsssec (abfd
)->vma
, obj_bsssec (abfd
)->size
,
1152 obj_bsssec (abfd
)->alignment_power
);
1156 switch (adata (abfd
).magic
)
1159 adjust_o_magic (abfd
, execp
);
1162 adjust_z_magic (abfd
, execp
);
1165 adjust_n_magic (abfd
, execp
);
1171 #ifdef BFD_AOUT_DEBUG
1172 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1173 obj_textsec (abfd
)->vma
, execp
->a_text
,
1174 obj_textsec (abfd
)->filepos
,
1175 obj_datasec (abfd
)->vma
, execp
->a_data
,
1176 obj_datasec (abfd
)->filepos
,
1177 obj_bsssec (abfd
)->vma
, execp
->a_bss
);
1185 aout_@var{size}_new_section_hook
1188 bfd_boolean aout_@var{size}_new_section_hook,
1193 Called by the BFD in response to a @code{bfd_make_section}
1197 NAME (aout
, new_section_hook
) (bfd
*abfd
, asection
*newsect
)
1199 /* Align to double at least. */
1200 newsect
->alignment_power
= bfd_get_arch_info (abfd
)->section_align_power
;
1202 if (bfd_get_format (abfd
) == bfd_object
)
1204 if (obj_textsec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".text"))
1206 obj_textsec (abfd
)= newsect
;
1207 newsect
->target_index
= N_TEXT
;
1209 else if (obj_datasec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".data"))
1211 obj_datasec (abfd
) = newsect
;
1212 newsect
->target_index
= N_DATA
;
1214 else if (obj_bsssec (abfd
) == NULL
&& !strcmp (newsect
->name
, ".bss"))
1216 obj_bsssec (abfd
) = newsect
;
1217 newsect
->target_index
= N_BSS
;
1221 /* We allow more than three sections internally. */
1222 return _bfd_generic_new_section_hook (abfd
, newsect
);
1226 NAME (aout
, set_section_contents
) (bfd
*abfd
,
1228 const void * location
,
1230 bfd_size_type count
)
1232 if (! abfd
->output_has_begun
)
1234 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
1238 if (section
== obj_bsssec (abfd
))
1240 bfd_set_error (bfd_error_no_contents
);
1244 if (section
!= obj_textsec (abfd
)
1245 && section
!= obj_datasec (abfd
))
1247 if (aout_section_merge_with_text_p (abfd
, section
))
1248 section
->filepos
= obj_textsec (abfd
)->filepos
+
1249 (section
->vma
- obj_textsec (abfd
)->vma
);
1253 /* xgettext:c-format */
1254 (_("%pB: can not represent section `%pA' in a.out object file format"),
1256 bfd_set_error (bfd_error_nonrepresentable_section
);
1263 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1264 || bfd_bwrite (location
, count
, abfd
) != count
)
1271 /* Read the external symbols from an a.out file. */
1274 aout_get_external_symbols (bfd
*abfd
)
1276 if (obj_aout_external_syms (abfd
) == NULL
)
1278 bfd_size_type count
;
1279 struct external_nlist
*syms
;
1280 bfd_size_type amt
= exec_hdr (abfd
)->a_syms
;
1282 count
= amt
/ EXTERNAL_NLIST_SIZE
;
1284 return TRUE
; /* Nothing to do. */
1287 if (! bfd_get_file_window (abfd
, obj_sym_filepos (abfd
), amt
,
1288 &obj_aout_sym_window (abfd
), TRUE
))
1290 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1292 /* We allocate using malloc to make the values easy to free
1293 later on. If we put them on the objalloc it might not be
1294 possible to free them. */
1295 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0)
1297 syms
= (struct external_nlist
*) _bfd_malloc_and_read (abfd
, amt
, amt
);
1302 obj_aout_external_syms (abfd
) = syms
;
1303 obj_aout_external_sym_count (abfd
) = count
;
1306 if (obj_aout_external_strings (abfd
) == NULL
1307 && exec_hdr (abfd
)->a_syms
!= 0)
1309 unsigned char string_chars
[BYTES_IN_WORD
];
1310 bfd_size_type stringsize
;
1312 bfd_size_type amt
= BYTES_IN_WORD
;
1314 /* Get the size of the strings. */
1315 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1316 || bfd_bread ((void *) string_chars
, amt
, abfd
) != amt
)
1318 stringsize
= GET_WORD (abfd
, string_chars
);
1319 if (stringsize
== 0)
1321 else if (stringsize
< BYTES_IN_WORD
1322 || (size_t) stringsize
!= stringsize
)
1324 bfd_set_error (bfd_error_bad_value
);
1329 if (stringsize
>= BYTES_IN_WORD
)
1331 if (! bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
+ 1,
1332 &obj_aout_string_window (abfd
), TRUE
))
1334 strings
= (char *) obj_aout_string_window (abfd
).data
;
1339 strings
= (char *) bfd_malloc (stringsize
+ 1);
1340 if (strings
== NULL
)
1343 if (stringsize
>= BYTES_IN_WORD
)
1345 /* Keep the string count in the buffer for convenience
1346 when indexing with e_strx. */
1347 amt
= stringsize
- BYTES_IN_WORD
;
1348 if (bfd_bread (strings
+ BYTES_IN_WORD
, amt
, abfd
) != amt
)
1355 /* Ensure that a zero index yields an empty string. */
1358 /* Ensure that the string buffer is NUL terminated. */
1359 strings
[stringsize
] = 0;
1361 obj_aout_external_strings (abfd
) = strings
;
1362 obj_aout_external_string_size (abfd
) = stringsize
;
1368 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1369 and symbol->value fields of CACHE_PTR will be set from the a.out
1370 nlist structure. This function is responsible for setting
1371 symbol->flags and symbol->section, and adjusting symbol->value. */
1374 translate_from_native_sym_flags (bfd
*abfd
, aout_symbol_type
*cache_ptr
)
1378 if ((cache_ptr
->type
& N_STAB
) != 0
1379 || cache_ptr
->type
== N_FN
)
1383 /* This is a debugging symbol. */
1384 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1386 /* Work out the symbol section. */
1387 switch (cache_ptr
->type
& N_TYPE
)
1391 sec
= obj_textsec (abfd
);
1394 sec
= obj_datasec (abfd
);
1397 sec
= obj_bsssec (abfd
);
1401 sec
= bfd_abs_section_ptr
;
1405 cache_ptr
->symbol
.section
= sec
;
1406 cache_ptr
->symbol
.value
-= sec
->vma
;
1411 /* Get the default visibility. This does not apply to all types, so
1412 we just hold it in a local variable to use if wanted. */
1413 if ((cache_ptr
->type
& N_EXT
) == 0)
1414 visible
= BSF_LOCAL
;
1416 visible
= BSF_GLOBAL
;
1418 switch (cache_ptr
->type
)
1421 case N_ABS
: case N_ABS
| N_EXT
:
1422 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1423 cache_ptr
->symbol
.flags
= visible
;
1426 case N_UNDF
| N_EXT
:
1427 if (cache_ptr
->symbol
.value
!= 0)
1429 /* This is a common symbol. */
1430 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1431 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1435 cache_ptr
->symbol
.flags
= 0;
1436 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1440 case N_TEXT
: case N_TEXT
| N_EXT
:
1441 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1442 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1443 cache_ptr
->symbol
.flags
= visible
;
1446 /* N_SETV symbols used to represent set vectors placed in the
1447 data section. They are no longer generated. Theoretically,
1448 it was possible to extract the entries and combine them with
1449 new ones, although I don't know if that was ever actually
1450 done. Unless that feature is restored, treat them as data
1452 case N_SETV
: case N_SETV
| N_EXT
:
1453 case N_DATA
: case N_DATA
| N_EXT
:
1454 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1455 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1456 cache_ptr
->symbol
.flags
= visible
;
1459 case N_BSS
: case N_BSS
| N_EXT
:
1460 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1461 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1462 cache_ptr
->symbol
.flags
= visible
;
1465 case N_SETA
: case N_SETA
| N_EXT
:
1466 case N_SETT
: case N_SETT
| N_EXT
:
1467 case N_SETD
: case N_SETD
| N_EXT
:
1468 case N_SETB
: case N_SETB
| N_EXT
:
1470 /* This code is no longer needed. It used to be used to make
1471 the linker handle set symbols, but they are now handled in
1472 the add_symbols routine instead. */
1473 switch (cache_ptr
->type
& N_TYPE
)
1476 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1479 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1482 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1485 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1489 cache_ptr
->symbol
.flags
|= BSF_CONSTRUCTOR
;
1494 /* This symbol is the text of a warning message. The next
1495 symbol is the symbol to associate the warning with. If a
1496 reference is made to that symbol, a warning is issued. */
1497 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_WARNING
;
1498 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1501 case N_INDR
: case N_INDR
| N_EXT
:
1502 /* An indirect symbol. This consists of two symbols in a row.
1503 The first symbol is the name of the indirection. The second
1504 symbol is the name of the target. A reference to the first
1505 symbol becomes a reference to the second. */
1506 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_INDIRECT
| visible
;
1507 cache_ptr
->symbol
.section
= bfd_ind_section_ptr
;
1511 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1512 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1516 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1517 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1521 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1522 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1523 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1527 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1528 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1529 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1533 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1534 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1535 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1542 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1545 translate_to_native_sym_flags (bfd
*abfd
,
1547 struct external_nlist
*sym_pointer
)
1549 bfd_vma value
= cache_ptr
->value
;
1553 /* Mask out any existing type bits in case copying from one section
1555 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1557 sec
= bfd_asymbol_section (cache_ptr
);
1562 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1565 /* xgettext:c-format */
1566 (_("%pB: can not represent section for symbol `%s' in a.out "
1567 "object file format"),
1569 cache_ptr
->name
!= NULL
? cache_ptr
->name
: _("*unknown*"));
1570 bfd_set_error (bfd_error_nonrepresentable_section
);
1574 if (sec
->output_section
!= NULL
)
1576 off
= sec
->output_offset
;
1577 sec
= sec
->output_section
;
1580 if (bfd_is_abs_section (sec
))
1581 sym_pointer
->e_type
[0] |= N_ABS
;
1582 else if (sec
== obj_textsec (abfd
))
1583 sym_pointer
->e_type
[0] |= N_TEXT
;
1584 else if (sec
== obj_datasec (abfd
))
1585 sym_pointer
->e_type
[0] |= N_DATA
;
1586 else if (sec
== obj_bsssec (abfd
))
1587 sym_pointer
->e_type
[0] |= N_BSS
;
1588 else if (bfd_is_und_section (sec
))
1589 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1590 else if (bfd_is_ind_section (sec
))
1591 sym_pointer
->e_type
[0] = N_INDR
;
1592 else if (bfd_is_com_section (sec
))
1593 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1596 if (aout_section_merge_with_text_p (abfd
, sec
))
1597 sym_pointer
->e_type
[0] |= N_TEXT
;
1601 /* xgettext:c-format */
1602 (_("%pB: can not represent section `%pA' in a.out object file format"),
1604 bfd_set_error (bfd_error_nonrepresentable_section
);
1609 /* Turn the symbol from section relative to absolute again. */
1610 value
+= sec
->vma
+ off
;
1612 if ((cache_ptr
->flags
& BSF_WARNING
) != 0)
1613 sym_pointer
->e_type
[0] = N_WARNING
;
1615 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1616 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1617 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1618 sym_pointer
->e_type
[0] |= N_EXT
;
1619 else if ((cache_ptr
->flags
& BSF_LOCAL
) != 0)
1620 sym_pointer
->e_type
[0] &= ~N_EXT
;
1622 if ((cache_ptr
->flags
& BSF_CONSTRUCTOR
) != 0)
1624 int type
= ((aout_symbol_type
*) cache_ptr
)->type
;
1628 case N_ABS
: type
= N_SETA
; break;
1629 case N_TEXT
: type
= N_SETT
; break;
1630 case N_DATA
: type
= N_SETD
; break;
1631 case N_BSS
: type
= N_SETB
; break;
1633 sym_pointer
->e_type
[0] = type
;
1636 if ((cache_ptr
->flags
& BSF_WEAK
) != 0)
1640 switch (sym_pointer
->e_type
[0] & N_TYPE
)
1643 case N_ABS
: type
= N_WEAKA
; break;
1644 case N_TEXT
: type
= N_WEAKT
; break;
1645 case N_DATA
: type
= N_WEAKD
; break;
1646 case N_BSS
: type
= N_WEAKB
; break;
1647 case N_UNDF
: type
= N_WEAKU
; break;
1649 sym_pointer
->e_type
[0] = type
;
1652 PUT_WORD (abfd
, value
, sym_pointer
->e_value
);
1657 /* Native-level interface to symbols. */
1660 NAME (aout
, make_empty_symbol
) (bfd
*abfd
)
1662 size_t amt
= sizeof (aout_symbol_type
);
1664 aout_symbol_type
*new_symbol
= (aout_symbol_type
*) bfd_zalloc (abfd
, amt
);
1667 new_symbol
->symbol
.the_bfd
= abfd
;
1669 return &new_symbol
->symbol
;
1672 /* Translate a set of internal symbols into external symbols. */
1675 NAME (aout
, translate_symbol_table
) (bfd
*abfd
,
1676 aout_symbol_type
*in
,
1677 struct external_nlist
*ext
,
1678 bfd_size_type count
,
1680 bfd_size_type strsize
,
1681 bfd_boolean dynamic
)
1683 struct external_nlist
*ext_end
;
1685 ext_end
= ext
+ count
;
1686 for (; ext
< ext_end
; ext
++, in
++)
1690 x
= GET_WORD (abfd
, ext
->e_strx
);
1691 in
->symbol
.the_bfd
= abfd
;
1693 /* For the normal symbols, the zero index points at the number
1694 of bytes in the string table but is to be interpreted as the
1695 null string. For the dynamic symbols, the number of bytes in
1696 the string table is stored in the __DYNAMIC structure and the
1697 zero index points at an actual string. */
1698 if (x
== 0 && ! dynamic
)
1699 in
->symbol
.name
= "";
1700 else if (x
< strsize
)
1701 in
->symbol
.name
= str
+ x
;
1705 (_("%pB: invalid string offset %" PRIu64
" >= %" PRIu64
),
1706 abfd
, (uint64_t) x
, (uint64_t) strsize
);
1707 bfd_set_error (bfd_error_bad_value
);
1711 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1712 in
->desc
= H_GET_16 (abfd
, ext
->e_desc
);
1713 in
->other
= H_GET_8 (abfd
, ext
->e_other
);
1714 in
->type
= H_GET_8 (abfd
, ext
->e_type
);
1715 in
->symbol
.udata
.p
= NULL
;
1717 if (! translate_from_native_sym_flags (abfd
, in
))
1721 in
->symbol
.flags
|= BSF_DYNAMIC
;
1727 /* We read the symbols into a buffer, which is discarded when this
1728 function exits. We read the strings into a buffer large enough to
1729 hold them all plus all the cached symbol entries. */
1732 NAME (aout
, slurp_symbol_table
) (bfd
*abfd
)
1734 struct external_nlist
*old_external_syms
;
1735 aout_symbol_type
*cached
;
1736 bfd_size_type cached_size
;
1738 /* If there's no work to be done, don't do any. */
1739 if (obj_aout_symbols (abfd
) != NULL
)
1742 old_external_syms
= obj_aout_external_syms (abfd
);
1744 if (! aout_get_external_symbols (abfd
))
1747 cached_size
= obj_aout_external_sym_count (abfd
);
1748 if (cached_size
== 0)
1749 return TRUE
; /* Nothing to do. */
1751 cached_size
*= sizeof (aout_symbol_type
);
1752 cached
= (aout_symbol_type
*) bfd_zmalloc (cached_size
);
1756 /* Convert from external symbol information to internal. */
1757 if (! (NAME (aout
, translate_symbol_table
)
1759 obj_aout_external_syms (abfd
),
1760 obj_aout_external_sym_count (abfd
),
1761 obj_aout_external_strings (abfd
),
1762 obj_aout_external_string_size (abfd
),
1769 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
1771 obj_aout_symbols (abfd
) = cached
;
1773 /* It is very likely that anybody who calls this function will not
1774 want the external symbol information, so if it was allocated
1775 because of our call to aout_get_external_symbols, we free it up
1776 right away to save space. */
1777 if (old_external_syms
== NULL
1778 && obj_aout_external_syms (abfd
) != NULL
)
1781 bfd_free_window (&obj_aout_sym_window (abfd
));
1783 free (obj_aout_external_syms (abfd
));
1785 obj_aout_external_syms (abfd
) = NULL
;
1791 /* We use a hash table when writing out symbols so that we only write
1792 out a particular string once. This helps particularly when the
1793 linker writes out stabs debugging entries, because each different
1794 contributing object file tends to have many duplicate stabs
1797 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1798 if BFD_TRADITIONAL_FORMAT is set. */
1800 /* Get the index of a string in a strtab, adding it if it is not
1803 static inline bfd_size_type
1804 add_to_stringtab (bfd
*abfd
,
1805 struct bfd_strtab_hash
*tab
,
1810 bfd_size_type str_index
;
1812 /* An index of 0 always means the empty string. */
1813 if (str
== 0 || *str
== '\0')
1816 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1817 doesn't understand a hashed string table. */
1819 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1822 str_index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1824 if (str_index
!= (bfd_size_type
) -1)
1825 /* Add BYTES_IN_WORD to the return value to account for the
1826 space taken up by the string table size. */
1827 str_index
+= BYTES_IN_WORD
;
1832 /* Write out a strtab. ABFD is already at the right location in the
1836 emit_stringtab (bfd
*abfd
, struct bfd_strtab_hash
*tab
)
1838 bfd_byte buffer
[BYTES_IN_WORD
];
1839 size_t amt
= BYTES_IN_WORD
;
1841 /* The string table starts with the size. */
1842 PUT_WORD (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_WORD
, buffer
);
1843 if (bfd_bwrite ((void *) buffer
, amt
, abfd
) != amt
)
1846 return _bfd_stringtab_emit (abfd
, tab
);
1850 NAME (aout
, write_syms
) (bfd
*abfd
)
1852 unsigned int count
;
1853 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1854 struct bfd_strtab_hash
*strtab
;
1856 strtab
= _bfd_stringtab_init ();
1860 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1862 asymbol
*g
= generic
[count
];
1864 struct external_nlist nsp
;
1867 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, FALSE
);
1868 if (indx
== (bfd_size_type
) -1)
1870 PUT_WORD (abfd
, indx
, (bfd_byte
*) nsp
.e_strx
);
1872 if (bfd_asymbol_flavour (g
) == abfd
->xvec
->flavour
)
1874 H_PUT_16 (abfd
, aout_symbol (g
)->desc
, nsp
.e_desc
);
1875 H_PUT_8 (abfd
, aout_symbol (g
)->other
, nsp
.e_other
);
1876 H_PUT_8 (abfd
, aout_symbol (g
)->type
, nsp
.e_type
);
1880 H_PUT_16 (abfd
, 0, nsp
.e_desc
);
1881 H_PUT_8 (abfd
, 0, nsp
.e_other
);
1882 H_PUT_8 (abfd
, 0, nsp
.e_type
);
1885 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1888 amt
= EXTERNAL_NLIST_SIZE
;
1889 if (bfd_bwrite ((void *) &nsp
, amt
, abfd
) != amt
)
1892 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1893 here, at the end. */
1897 if (! emit_stringtab (abfd
, strtab
))
1900 _bfd_stringtab_free (strtab
);
1905 _bfd_stringtab_free (strtab
);
1910 NAME (aout
, canonicalize_symtab
) (bfd
*abfd
, asymbol
**location
)
1912 unsigned int counter
= 0;
1913 aout_symbol_type
*symbase
;
1915 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
1918 for (symbase
= obj_aout_symbols (abfd
);
1919 counter
++ < bfd_get_symcount (abfd
);
1921 *(location
++) = (asymbol
*) (symbase
++);
1923 return bfd_get_symcount (abfd
);
1926 /* Standard reloc stuff. */
1927 /* Output standard relocation information to a file in target byte order. */
1929 extern void NAME (aout
, swap_std_reloc_out
)
1930 (bfd
*, arelent
*, struct reloc_std_external
*);
1933 NAME (aout
, swap_std_reloc_out
) (bfd
*abfd
,
1935 struct reloc_std_external
*natptr
)
1938 asymbol
*sym
= *(g
->sym_ptr_ptr
);
1940 unsigned int r_length
;
1942 int r_baserel
, r_jmptable
, r_relative
;
1943 asection
*output_section
= sym
->section
->output_section
;
1945 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
1947 BFD_ASSERT (g
->howto
!= NULL
);
1948 r_length
= g
->howto
->size
; /* Size as a power of two. */
1949 r_pcrel
= (int) g
->howto
->pc_relative
; /* Relative to PC? */
1950 /* XXX This relies on relocs coming from a.out files. */
1951 r_baserel
= (g
->howto
->type
& 8) != 0;
1952 r_jmptable
= (g
->howto
->type
& 16) != 0;
1953 r_relative
= (g
->howto
->type
& 32) != 0;
1955 /* Name was clobbered by aout_write_syms to be symbol index. */
1957 /* If this relocation is relative to a symbol then set the
1958 r_index to the symbols index, and the r_extern bit.
1960 Absolute symbols can come in in two ways, either as an offset
1961 from the abs section, or as a symbol which has an abs value.
1962 check for that here. */
1964 if (bfd_is_com_section (output_section
)
1965 || bfd_is_abs_section (output_section
)
1966 || bfd_is_und_section (output_section
)
1967 /* PR gas/3041 a.out relocs against weak symbols
1968 must be treated as if they were against externs. */
1969 || (sym
->flags
& BSF_WEAK
))
1971 if (bfd_abs_section_ptr
->symbol
== sym
)
1973 /* Whoops, looked like an abs symbol, but is
1974 really an offset from the abs section. */
1980 /* Fill in symbol. */
1982 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
1987 /* Just an ordinary section. */
1989 r_index
= output_section
->target_index
;
1992 /* Now the fun stuff. */
1993 if (bfd_header_big_endian (abfd
))
1995 natptr
->r_index
[0] = r_index
>> 16;
1996 natptr
->r_index
[1] = r_index
>> 8;
1997 natptr
->r_index
[2] = r_index
;
1998 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
1999 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
2000 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
2001 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
2002 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
2003 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
2007 natptr
->r_index
[2] = r_index
>> 16;
2008 natptr
->r_index
[1] = r_index
>> 8;
2009 natptr
->r_index
[0] = r_index
;
2010 natptr
->r_type
[0] = ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
2011 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
2012 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
2013 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
2014 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
2015 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
2019 /* Extended stuff. */
2020 /* Output extended relocation information to a file in target byte order. */
2022 extern void NAME (aout
, swap_ext_reloc_out
)
2023 (bfd
*, arelent
*, struct reloc_ext_external
*);
2026 NAME (aout
, swap_ext_reloc_out
) (bfd
*abfd
,
2028 struct reloc_ext_external
*natptr
)
2032 unsigned int r_type
;
2034 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2035 asection
*output_section
= sym
->section
->output_section
;
2037 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
2039 r_type
= (unsigned int) g
->howto
->type
;
2041 r_addend
= g
->addend
;
2042 if ((sym
->flags
& BSF_SECTION_SYM
) != 0)
2043 r_addend
+= (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2045 /* If this relocation is relative to a symbol then set the
2046 r_index to the symbols index, and the r_extern bit.
2048 Absolute symbols can come in in two ways, either as an offset
2049 from the abs section, or as a symbol which has an abs value.
2050 check for that here. */
2051 if (bfd_is_abs_section (bfd_asymbol_section (sym
)))
2056 else if ((sym
->flags
& BSF_SECTION_SYM
) == 0)
2058 if (bfd_is_und_section (bfd_asymbol_section (sym
))
2059 || (sym
->flags
& BSF_GLOBAL
) != 0)
2063 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2067 /* Just an ordinary section. */
2069 r_index
= output_section
->target_index
;
2072 /* Now the fun stuff. */
2073 if (bfd_header_big_endian (abfd
))
2075 natptr
->r_index
[0] = r_index
>> 16;
2076 natptr
->r_index
[1] = r_index
>> 8;
2077 natptr
->r_index
[2] = r_index
;
2078 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
2079 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
2083 natptr
->r_index
[2] = r_index
>> 16;
2084 natptr
->r_index
[1] = r_index
>> 8;
2085 natptr
->r_index
[0] = r_index
;
2086 natptr
->r_type
[0] = ((r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
2087 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
));
2090 PUT_WORD (abfd
, r_addend
, natptr
->r_addend
);
2093 /* BFD deals internally with all things based from the section they're
2094 in. so, something in 10 bytes into a text section with a base of
2095 50 would have a symbol (.text+10) and know .text vma was 50.
2097 Aout keeps all it's symbols based from zero, so the symbol would
2098 contain 60. This macro subs the base of each section from the value
2099 to give the true offset from the section. */
2101 #define MOVE_ADDRESS(ad) \
2104 /* Undefined symbol. */ \
2105 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2106 cache_ptr->addend = ad; \
2110 /* Defined, section relative. Replace symbol with pointer to \
2111 symbol which points to section. */ \
2115 case N_TEXT | N_EXT: \
2116 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2117 cache_ptr->addend = ad - su->textsec->vma; \
2120 case N_DATA | N_EXT: \
2121 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2122 cache_ptr->addend = ad - su->datasec->vma; \
2125 case N_BSS | N_EXT: \
2126 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2127 cache_ptr->addend = ad - su->bsssec->vma; \
2131 case N_ABS | N_EXT: \
2132 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2133 cache_ptr->addend = ad; \
2139 NAME (aout
, swap_ext_reloc_in
) (bfd
*abfd
,
2140 struct reloc_ext_external
*bytes
,
2143 bfd_size_type symcount
)
2145 unsigned int r_index
;
2147 unsigned int r_type
;
2148 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2150 cache_ptr
->address
= (GET_SWORD (abfd
, bytes
->r_address
));
2152 /* Now the fun stuff. */
2153 if (bfd_header_big_endian (abfd
))
2155 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2156 | ((unsigned int) bytes
->r_index
[1] << 8)
2157 | bytes
->r_index
[2]);
2158 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
2159 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
2160 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
2164 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2165 | ((unsigned int) bytes
->r_index
[1] << 8)
2166 | bytes
->r_index
[0]);
2167 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
2168 r_type
= ((bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
2169 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
2172 if (r_type
< TABLE_SIZE (howto_table_ext
))
2173 cache_ptr
->howto
= howto_table_ext
+ r_type
;
2175 cache_ptr
->howto
= NULL
;
2177 /* Base relative relocs are always against the symbol table,
2178 regardless of the setting of r_extern. r_extern just reflects
2179 whether the symbol the reloc is against is local or global. */
2180 if (r_type
== (unsigned int) RELOC_BASE10
2181 || r_type
== (unsigned int) RELOC_BASE13
2182 || r_type
== (unsigned int) RELOC_BASE22
)
2185 if (r_extern
&& r_index
> symcount
)
2187 /* We could arrange to return an error, but it might be useful
2188 to see the file even if it is bad. */
2193 MOVE_ADDRESS (GET_SWORD (abfd
, bytes
->r_addend
));
2197 NAME (aout
, swap_std_reloc_in
) (bfd
*abfd
,
2198 struct reloc_std_external
*bytes
,
2201 bfd_size_type symcount
)
2203 unsigned int r_index
;
2205 unsigned int r_length
;
2207 int r_baserel
, r_jmptable
, r_relative
;
2208 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2209 unsigned int howto_idx
;
2211 cache_ptr
->address
= H_GET_32 (abfd
, bytes
->r_address
);
2213 /* Now the fun stuff. */
2214 if (bfd_header_big_endian (abfd
))
2216 r_index
= (((unsigned int) bytes
->r_index
[0] << 16)
2217 | ((unsigned int) bytes
->r_index
[1] << 8)
2218 | bytes
->r_index
[2]);
2219 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
2220 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
2221 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
2222 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
2223 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
2224 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
2225 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
2229 r_index
= (((unsigned int) bytes
->r_index
[2] << 16)
2230 | ((unsigned int) bytes
->r_index
[1] << 8)
2231 | bytes
->r_index
[0]);
2232 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
2233 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
2234 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_LITTLE
));
2235 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_LITTLE
));
2236 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_LITTLE
));
2237 r_length
= ((bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
2238 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
2241 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
2242 + 16 * r_jmptable
+ 32 * r_relative
);
2243 if (howto_idx
< TABLE_SIZE (howto_table_std
))
2245 cache_ptr
->howto
= howto_table_std
+ howto_idx
;
2246 if (cache_ptr
->howto
->type
== (unsigned int) -1)
2247 cache_ptr
->howto
= NULL
;
2250 cache_ptr
->howto
= NULL
;
2252 /* Base relative relocs are always against the symbol table,
2253 regardless of the setting of r_extern. r_extern just reflects
2254 whether the symbol the reloc is against is local or global. */
2258 if (r_extern
&& r_index
>= symcount
)
2260 /* We could arrange to return an error, but it might be useful
2261 to see the file even if it is bad. FIXME: Of course this
2262 means that objdump -r *doesn't* see the actual reloc, and
2263 objcopy silently writes a different reloc. */
2271 /* Read and swap the relocs for a section. */
2274 NAME (aout
, slurp_reloc_table
) (bfd
*abfd
, sec_ptr asect
, asymbol
**symbols
)
2276 bfd_size_type count
;
2277 bfd_size_type reloc_size
;
2279 arelent
*reloc_cache
;
2281 unsigned int counter
= 0;
2285 if (asect
->relocation
)
2288 if (asect
->flags
& SEC_CONSTRUCTOR
)
2291 if (asect
== obj_datasec (abfd
))
2292 reloc_size
= exec_hdr (abfd
)->a_drsize
;
2293 else if (asect
== obj_textsec (abfd
))
2294 reloc_size
= exec_hdr (abfd
)->a_trsize
;
2295 else if (asect
== obj_bsssec (abfd
))
2299 bfd_set_error (bfd_error_invalid_operation
);
2303 each_size
= obj_reloc_entry_size (abfd
);
2304 count
= reloc_size
/ each_size
;
2306 return TRUE
; /* Nothing to be done. */
2308 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
2310 relocs
= _bfd_malloc_and_read (abfd
, reloc_size
, reloc_size
);
2314 amt
= count
* sizeof (arelent
);
2315 reloc_cache
= (arelent
*) bfd_zmalloc (amt
);
2316 if (reloc_cache
== NULL
)
2322 cache_ptr
= reloc_cache
;
2323 if (each_size
== RELOC_EXT_SIZE
)
2325 struct reloc_ext_external
*rptr
= (struct reloc_ext_external
*) relocs
;
2327 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2328 MY_swap_ext_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2329 (bfd_size_type
) bfd_get_symcount (abfd
));
2333 struct reloc_std_external
*rptr
= (struct reloc_std_external
*) relocs
;
2335 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2336 MY_swap_std_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2337 (bfd_size_type
) bfd_get_symcount (abfd
));
2342 asect
->relocation
= reloc_cache
;
2343 asect
->reloc_count
= cache_ptr
- reloc_cache
;
2348 /* Write out a relocation section into an object file. */
2351 NAME (aout
, squirt_out_relocs
) (bfd
*abfd
, asection
*section
)
2354 unsigned char *native
, *natptr
;
2357 unsigned int count
= section
->reloc_count
;
2358 bfd_size_type natsize
;
2360 if (count
== 0 || section
->orelocation
== NULL
)
2363 each_size
= obj_reloc_entry_size (abfd
);
2364 natsize
= (bfd_size_type
) each_size
* count
;
2365 native
= (unsigned char *) bfd_zalloc (abfd
, natsize
);
2369 generic
= section
->orelocation
;
2371 if (each_size
== RELOC_EXT_SIZE
)
2373 for (natptr
= native
;
2375 --count
, natptr
+= each_size
, ++generic
)
2377 /* PR 20921: If the howto field has not been initialised then skip
2379 PR 20929: Similarly for the symbol field. */
2380 if ((*generic
)->howto
== NULL
2381 || (*generic
)->sym_ptr_ptr
== NULL
)
2383 bfd_set_error (bfd_error_invalid_operation
);
2384 _bfd_error_handler (_("%pB: attempt to write out "
2385 "unknown reloc type"), abfd
);
2388 MY_swap_ext_reloc_out (abfd
, *generic
,
2389 (struct reloc_ext_external
*) natptr
);
2394 for (natptr
= native
;
2396 --count
, natptr
+= each_size
, ++generic
)
2398 if ((*generic
)->howto
== NULL
2399 || (*generic
)->sym_ptr_ptr
== NULL
)
2401 bfd_set_error (bfd_error_invalid_operation
);
2402 _bfd_error_handler (_("%pB: attempt to write out "
2403 "unknown reloc type"), abfd
);
2406 MY_swap_std_reloc_out (abfd
, *generic
,
2407 (struct reloc_std_external
*) natptr
);
2411 if (bfd_bwrite ((void *) native
, natsize
, abfd
) != natsize
)
2413 bfd_release (abfd
, native
);
2416 bfd_release (abfd
, native
);
2421 /* This is stupid. This function should be a boolean predicate. */
2424 NAME (aout
, canonicalize_reloc
) (bfd
*abfd
,
2429 arelent
*tblptr
= section
->relocation
;
2432 if (section
== obj_bsssec (abfd
))
2438 if (!(tblptr
|| NAME (aout
, slurp_reloc_table
) (abfd
, section
, symbols
)))
2441 if (section
->flags
& SEC_CONSTRUCTOR
)
2443 arelent_chain
*chain
= section
->constructor_chain
;
2444 for (count
= 0; count
< section
->reloc_count
; count
++)
2446 *relptr
++ = &chain
->relent
;
2447 chain
= chain
->next
;
2452 tblptr
= section
->relocation
;
2454 for (count
= 0; count
++ < section
->reloc_count
; )
2456 *relptr
++ = tblptr
++;
2461 return section
->reloc_count
;
2465 NAME (aout
, get_reloc_upper_bound
) (bfd
*abfd
, sec_ptr asect
)
2467 bfd_size_type count
;
2469 if (bfd_get_format (abfd
) != bfd_object
)
2471 bfd_set_error (bfd_error_invalid_operation
);
2475 if (asect
->flags
& SEC_CONSTRUCTOR
)
2476 count
= asect
->reloc_count
;
2477 else if (asect
== obj_datasec (abfd
))
2478 count
= exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
2479 else if (asect
== obj_textsec (abfd
))
2480 count
= exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
2481 else if (asect
== obj_bsssec (abfd
))
2485 bfd_set_error (bfd_error_invalid_operation
);
2489 if (count
>= LONG_MAX
/ sizeof (arelent
*))
2491 bfd_set_error (bfd_error_file_too_big
);
2494 return (count
+ 1) * sizeof (arelent
*);
2498 NAME (aout
, get_symtab_upper_bound
) (bfd
*abfd
)
2500 if (!NAME (aout
, slurp_symbol_table
) (abfd
))
2503 return (bfd_get_symcount (abfd
)+1) * (sizeof (aout_symbol_type
*));
2507 NAME (aout
, get_lineno
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2508 asymbol
*ignore_symbol ATTRIBUTE_UNUSED
)
2514 NAME (aout
, get_symbol_info
) (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
2518 bfd_symbol_info (symbol
, ret
);
2520 if (ret
->type
== '?')
2522 int type_code
= aout_symbol (symbol
)->type
& 0xff;
2523 const char *stab_name
= bfd_get_stab_name (type_code
);
2524 static char buf
[10];
2526 if (stab_name
== NULL
)
2528 sprintf (buf
, "(%d)", type_code
);
2532 ret
->stab_type
= type_code
;
2533 ret
->stab_other
= (unsigned) (aout_symbol (symbol
)->other
& 0xff);
2534 ret
->stab_desc
= (unsigned) (aout_symbol (symbol
)->desc
& 0xffff);
2535 ret
->stab_name
= stab_name
;
2540 NAME (aout
, print_symbol
) (bfd
*abfd
,
2543 bfd_print_symbol_type how
)
2545 FILE *file
= (FILE *)afile
;
2549 case bfd_print_symbol_name
:
2551 fprintf (file
,"%s", symbol
->name
);
2553 case bfd_print_symbol_more
:
2554 fprintf (file
,"%4x %2x %2x",
2555 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2556 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2557 (unsigned) (aout_symbol (symbol
)->type
));
2559 case bfd_print_symbol_all
:
2561 const char *section_name
= symbol
->section
->name
;
2563 bfd_print_symbol_vandf (abfd
, (void *)file
, symbol
);
2565 fprintf (file
," %-5s %04x %02x %02x",
2567 (unsigned) (aout_symbol (symbol
)->desc
& 0xffff),
2568 (unsigned) (aout_symbol (symbol
)->other
& 0xff),
2569 (unsigned) (aout_symbol (symbol
)->type
& 0xff));
2571 fprintf (file
," %s", symbol
->name
);
2577 /* If we don't have to allocate more than 1MB to hold the generic
2578 symbols, we use the generic minisymbol methord: it's faster, since
2579 it only translates the symbols once, not multiple times. */
2580 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2582 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2583 symbols. The minisymbol_to_symbol function translates these into
2584 BFD asymbol structures. */
2587 NAME (aout
, read_minisymbols
) (bfd
*abfd
,
2588 bfd_boolean dynamic
,
2590 unsigned int *sizep
)
2593 /* We could handle the dynamic symbols here as well, but it's
2594 easier to hand them off. */
2595 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2597 if (! aout_get_external_symbols (abfd
))
2600 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2601 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2603 *minisymsp
= (void *) obj_aout_external_syms (abfd
);
2605 /* By passing the external symbols back from this routine, we are
2606 giving up control over the memory block. Clear
2607 obj_aout_external_syms, so that we do not try to free it
2609 obj_aout_external_syms (abfd
) = NULL
;
2611 *sizep
= EXTERNAL_NLIST_SIZE
;
2612 return obj_aout_external_sym_count (abfd
);
2615 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2616 unmodified a.out symbol. The SYM argument is a structure returned
2617 by bfd_make_empty_symbol, which we fill in here. */
2620 NAME (aout
, minisymbol_to_symbol
) (bfd
*abfd
,
2621 bfd_boolean dynamic
,
2622 const void * minisym
,
2626 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2627 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2629 memset (sym
, 0, sizeof (aout_symbol_type
));
2631 /* We call translate_symbol_table to translate a single symbol. */
2632 if (! (NAME (aout
, translate_symbol_table
)
2634 (aout_symbol_type
*) sym
,
2635 (struct external_nlist
*) minisym
,
2637 obj_aout_external_strings (abfd
),
2638 obj_aout_external_string_size (abfd
),
2645 /* Provided a BFD, a section and an offset into the section, calculate
2646 and return the name of the source file and the line nearest to the
2650 NAME (aout
, find_nearest_line
) (bfd
*abfd
,
2654 const char **filename_ptr
,
2655 const char **functionname_ptr
,
2656 unsigned int *line_ptr
,
2657 unsigned int *disriminator_ptr
)
2659 /* Run down the file looking for the filename, function and linenumber. */
2661 const char *directory_name
= NULL
;
2662 const char *main_file_name
= NULL
;
2663 const char *current_file_name
= NULL
;
2664 const char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2665 const char *line_directory_name
= NULL
; /* Value of directory_name at line number. */
2666 bfd_vma low_line_vma
= 0;
2667 bfd_vma low_func_vma
= 0;
2669 bfd_size_type filelen
, funclen
;
2672 *filename_ptr
= abfd
->filename
;
2673 *functionname_ptr
= NULL
;
2675 if (disriminator_ptr
)
2676 *disriminator_ptr
= 0;
2678 if (symbols
!= NULL
)
2680 for (p
= symbols
; *p
; p
++)
2682 aout_symbol_type
*q
= (aout_symbol_type
*) (*p
);
2687 /* If this looks like a file name symbol, and it comes after
2688 the line number we have found so far, but before the
2689 offset, then we have probably not found the right line
2691 if (q
->symbol
.value
<= offset
2692 && ((q
->symbol
.value
> low_line_vma
2693 && (line_file_name
!= NULL
2695 || (q
->symbol
.value
> low_func_vma
2698 const char *symname
;
2700 symname
= q
->symbol
.name
;
2703 && strlen (symname
) > 2
2704 && strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2706 if (q
->symbol
.value
> low_line_vma
)
2709 line_file_name
= NULL
;
2711 if (q
->symbol
.value
> low_func_vma
)
2718 /* If this symbol is less than the offset, but greater than
2719 the line number we have found so far, then we have not
2720 found the right line number. */
2721 if (q
->symbol
.value
<= offset
)
2723 if (q
->symbol
.value
> low_line_vma
)
2726 line_file_name
= NULL
;
2728 if (q
->symbol
.value
> low_func_vma
)
2732 main_file_name
= current_file_name
= q
->symbol
.name
;
2733 /* Look ahead to next symbol to check if that too is an N_SO. */
2737 q
= (aout_symbol_type
*) (*p
);
2738 if (q
->type
!= (int)N_SO
)
2741 /* Found a second N_SO First is directory; second is filename. */
2742 directory_name
= current_file_name
;
2743 main_file_name
= current_file_name
= q
->symbol
.name
;
2744 if (obj_textsec (abfd
) != section
)
2748 current_file_name
= q
->symbol
.name
;
2755 /* We'll keep this if it resolves nearer than the one we have
2757 if (q
->symbol
.value
>= low_line_vma
2758 && q
->symbol
.value
<= offset
)
2760 *line_ptr
= q
->desc
;
2761 low_line_vma
= q
->symbol
.value
;
2762 line_file_name
= current_file_name
;
2763 line_directory_name
= directory_name
;
2768 /* We'll keep this if it is nearer than the one we have already. */
2769 if (q
->symbol
.value
>= low_func_vma
2770 && q
->symbol
.value
<= offset
)
2772 low_func_vma
= q
->symbol
.value
;
2773 func
= (asymbol
*)q
;
2775 else if (q
->symbol
.value
> offset
)
2786 main_file_name
= line_file_name
;
2787 directory_name
= line_directory_name
;
2790 if (main_file_name
== NULL
2791 || IS_ABSOLUTE_PATH (main_file_name
)
2792 || directory_name
== NULL
)
2795 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2800 funclen
= strlen (bfd_asymbol_name (func
));
2802 if (adata (abfd
).line_buf
!= NULL
)
2803 free (adata (abfd
).line_buf
);
2805 if (filelen
+ funclen
== 0)
2806 adata (abfd
).line_buf
= buf
= NULL
;
2809 buf
= (char *) bfd_malloc (filelen
+ funclen
+ 3);
2810 adata (abfd
).line_buf
= buf
;
2815 if (main_file_name
!= NULL
)
2817 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2818 *filename_ptr
= main_file_name
;
2822 /* PR binutils/20891: In a corrupt input file both
2823 main_file_name and directory_name can be empty... */
2824 * filename_ptr
= NULL
;
2827 snprintf (buf
, filelen
+ 1, "%s%s", directory_name
,
2829 *filename_ptr
= buf
;
2837 const char *function
= func
->name
;
2842 /* PR binutils/20892: In a corrupt input file func can be empty. */
2843 * functionname_ptr
= NULL
;
2846 /* The caller expects a symbol name. We actually have a
2847 function name, without the leading underscore. Put the
2848 underscore back in, so that the caller gets a symbol name. */
2849 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2850 strcpy (buf
, function
);
2853 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2854 strcpy (buf
+ 1, function
);
2856 /* Have to remove : stuff. */
2857 colon
= strchr (buf
, ':');
2860 *functionname_ptr
= buf
;
2867 NAME (aout
, sizeof_headers
) (bfd
*abfd
,
2868 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2870 return adata (abfd
).exec_bytes_size
;
2873 /* Free all information we have cached for this BFD. We can always
2874 read it again later if we need it. */
2877 NAME (aout
, bfd_free_cached_info
) (bfd
*abfd
)
2881 if (bfd_get_format (abfd
) != bfd_object
2882 || abfd
->tdata
.aout_data
== NULL
)
2885 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2886 BFCI_FREE (obj_aout_symbols (abfd
));
2888 obj_aout_external_syms (abfd
) = 0;
2889 bfd_free_window (&obj_aout_sym_window (abfd
));
2890 bfd_free_window (&obj_aout_string_window (abfd
));
2891 obj_aout_external_strings (abfd
) = 0;
2893 BFCI_FREE (obj_aout_external_syms (abfd
));
2894 BFCI_FREE (obj_aout_external_strings (abfd
));
2896 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2897 BFCI_FREE (o
->relocation
);
2903 /* a.out link code. */
2905 /* Routine to create an entry in an a.out link hash table. */
2907 struct bfd_hash_entry
*
2908 NAME (aout
, link_hash_newfunc
) (struct bfd_hash_entry
*entry
,
2909 struct bfd_hash_table
*table
,
2912 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2914 /* Allocate the structure if it has not already been allocated by a
2917 ret
= (struct aout_link_hash_entry
*) bfd_hash_allocate (table
,
2922 /* Call the allocation method of the superclass. */
2923 ret
= ((struct aout_link_hash_entry
*)
2924 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2928 /* Set local fields. */
2929 ret
->written
= FALSE
;
2933 return (struct bfd_hash_entry
*) ret
;
2936 /* Initialize an a.out link hash table. */
2939 NAME (aout
, link_hash_table_init
) (struct aout_link_hash_table
*table
,
2941 struct bfd_hash_entry
*(*newfunc
)
2942 (struct bfd_hash_entry
*, struct bfd_hash_table
*,
2944 unsigned int entsize
)
2946 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
, entsize
);
2949 /* Create an a.out link hash table. */
2951 struct bfd_link_hash_table
*
2952 NAME (aout
, link_hash_table_create
) (bfd
*abfd
)
2954 struct aout_link_hash_table
*ret
;
2955 size_t amt
= sizeof (* ret
);
2957 ret
= (struct aout_link_hash_table
*) bfd_malloc (amt
);
2961 if (!NAME (aout
, link_hash_table_init
) (ret
, abfd
,
2962 NAME (aout
, link_hash_newfunc
),
2963 sizeof (struct aout_link_hash_entry
)))
2971 /* Add all symbols from an object file to the hash table. */
2974 aout_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2976 bfd_boolean (*add_one_symbol
)
2977 (struct bfd_link_info
*, bfd
*, const char *, flagword
, asection
*,
2978 bfd_vma
, const char *, bfd_boolean
, bfd_boolean
,
2979 struct bfd_link_hash_entry
**);
2980 struct external_nlist
*syms
;
2981 bfd_size_type sym_count
;
2984 struct aout_link_hash_entry
**sym_hash
;
2985 struct external_nlist
*p
;
2986 struct external_nlist
*pend
;
2989 syms
= obj_aout_external_syms (abfd
);
2990 sym_count
= obj_aout_external_sym_count (abfd
);
2991 strings
= obj_aout_external_strings (abfd
);
2992 if (info
->keep_memory
)
2997 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
2999 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
3000 (abfd
, info
, &syms
, &sym_count
, &strings
)))
3005 return TRUE
; /* Nothing to do. */
3007 /* We keep a list of the linker hash table entries that correspond
3008 to particular symbols. We could just look them up in the hash
3009 table, but keeping the list is more efficient. Perhaps this
3010 should be conditional on info->keep_memory. */
3011 amt
= sym_count
* sizeof (struct aout_link_hash_entry
*);
3012 sym_hash
= (struct aout_link_hash_entry
**) bfd_alloc (abfd
, amt
);
3013 if (sym_hash
== NULL
)
3015 obj_aout_sym_hashes (abfd
) = sym_hash
;
3017 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
3018 if (add_one_symbol
== NULL
)
3019 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
3022 pend
= p
+ sym_count
;
3023 for (; p
< pend
; p
++, sym_hash
++)
3034 type
= H_GET_8 (abfd
, p
->e_type
);
3036 /* Ignore debugging symbols. */
3037 if ((type
& N_STAB
) != 0)
3040 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3041 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3043 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3044 value
= GET_WORD (abfd
, p
->e_value
);
3061 /* Ignore symbols that are not externally visible. */
3064 /* Ignore local indirect symbol. */
3069 case N_UNDF
| N_EXT
:
3072 section
= bfd_und_section_ptr
;
3076 section
= bfd_com_section_ptr
;
3079 section
= bfd_abs_section_ptr
;
3081 case N_TEXT
| N_EXT
:
3082 section
= obj_textsec (abfd
);
3083 value
-= bfd_section_vma (section
);
3085 case N_DATA
| N_EXT
:
3086 case N_SETV
| N_EXT
:
3087 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3088 translate_from_native_sym_flags. */
3089 section
= obj_datasec (abfd
);
3090 value
-= bfd_section_vma (section
);
3093 section
= obj_bsssec (abfd
);
3094 value
-= bfd_section_vma (section
);
3096 case N_INDR
| N_EXT
:
3097 /* An indirect symbol. The next symbol is the symbol
3098 which this one really is. */
3099 /* See PR 20925 for a reproducer. */
3103 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3104 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3106 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3107 section
= bfd_ind_section_ptr
;
3108 flags
|= BSF_INDIRECT
;
3110 case N_COMM
| N_EXT
:
3111 section
= bfd_com_section_ptr
;
3113 case N_SETA
: case N_SETA
| N_EXT
:
3114 section
= bfd_abs_section_ptr
;
3115 flags
|= BSF_CONSTRUCTOR
;
3117 case N_SETT
: case N_SETT
| N_EXT
:
3118 section
= obj_textsec (abfd
);
3119 flags
|= BSF_CONSTRUCTOR
;
3120 value
-= bfd_section_vma (section
);
3122 case N_SETD
: case N_SETD
| N_EXT
:
3123 section
= obj_datasec (abfd
);
3124 flags
|= BSF_CONSTRUCTOR
;
3125 value
-= bfd_section_vma (section
);
3127 case N_SETB
: case N_SETB
| N_EXT
:
3128 section
= obj_bsssec (abfd
);
3129 flags
|= BSF_CONSTRUCTOR
;
3130 value
-= bfd_section_vma (section
);
3133 /* A warning symbol. The next symbol is the one to warn
3134 about. If there is no next symbol, just look away. */
3139 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3140 if (GET_WORD (abfd
, p
->e_strx
) >= obj_aout_external_string_size (abfd
))
3142 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3143 section
= bfd_und_section_ptr
;
3144 flags
|= BSF_WARNING
;
3147 section
= bfd_und_section_ptr
;
3151 section
= bfd_abs_section_ptr
;
3155 section
= obj_textsec (abfd
);
3156 value
-= bfd_section_vma (section
);
3160 section
= obj_datasec (abfd
);
3161 value
-= bfd_section_vma (section
);
3165 section
= obj_bsssec (abfd
);
3166 value
-= bfd_section_vma (section
);
3171 if (! ((*add_one_symbol
)
3172 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, FALSE
,
3173 (struct bfd_link_hash_entry
**) sym_hash
)))
3176 /* Restrict the maximum alignment of a common symbol based on
3177 the architecture, since a.out has no way to represent
3178 alignment requirements of a section in a .o file. FIXME:
3179 This isn't quite right: it should use the architecture of the
3180 output file, not the input files. */
3181 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3182 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3183 bfd_get_arch_info (abfd
)->section_align_power
))
3184 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3185 bfd_get_arch_info (abfd
)->section_align_power
;
3187 /* If this is a set symbol, and we are not building sets, then
3188 it is possible for the hash entry to not have been set. In
3189 such a case, treat the symbol as not globally defined. */
3190 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3192 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3196 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3203 /* Free up the internal symbols read from an a.out file. */
3206 aout_link_free_symbols (bfd
*abfd
)
3208 if (obj_aout_external_syms (abfd
) != NULL
)
3211 bfd_free_window (&obj_aout_sym_window (abfd
));
3213 free ((void *) obj_aout_external_syms (abfd
));
3215 obj_aout_external_syms (abfd
) = NULL
;
3217 if (obj_aout_external_strings (abfd
) != NULL
)
3220 bfd_free_window (&obj_aout_string_window (abfd
));
3222 free ((void *) obj_aout_external_strings (abfd
));
3224 obj_aout_external_strings (abfd
) = NULL
;
3229 /* Add symbols from an a.out object file. */
3232 aout_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
3234 if (! aout_get_external_symbols (abfd
))
3236 if (! aout_link_add_symbols (abfd
, info
))
3238 if (! info
->keep_memory
)
3240 if (! aout_link_free_symbols (abfd
))
3246 /* Look through the internal symbols to see if this object file should
3247 be included in the link. We should include this object file if it
3248 defines any symbols which are currently undefined. If this object
3249 file defines a common symbol, then we may adjust the size of the
3250 known symbol but we do not include the object file in the link
3251 (unless there is some other reason to include it). */
3254 aout_link_check_ar_symbols (bfd
*abfd
,
3255 struct bfd_link_info
*info
,
3256 bfd_boolean
*pneeded
,
3259 struct external_nlist
*p
;
3260 struct external_nlist
*pend
;
3265 /* Look through all the symbols. */
3266 p
= obj_aout_external_syms (abfd
);
3267 pend
= p
+ obj_aout_external_sym_count (abfd
);
3268 strings
= obj_aout_external_strings (abfd
);
3269 for (; p
< pend
; p
++)
3271 int type
= H_GET_8 (abfd
, p
->e_type
);
3273 struct bfd_link_hash_entry
*h
;
3275 /* Ignore symbols that are not externally visible. This is an
3276 optimization only, as we check the type more thoroughly
3278 if (((type
& N_EXT
) == 0
3279 || (type
& N_STAB
) != 0
3286 if (type
== N_WARNING
3292 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3293 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
3295 /* We are only interested in symbols that are currently
3296 undefined or common. */
3298 || (h
->type
!= bfd_link_hash_undefined
3299 && h
->type
!= bfd_link_hash_common
))
3301 if (type
== (N_INDR
| N_EXT
))
3306 if (type
== (N_TEXT
| N_EXT
)
3307 || type
== (N_DATA
| N_EXT
)
3308 || type
== (N_BSS
| N_EXT
)
3309 || type
== (N_ABS
| N_EXT
)
3310 || type
== (N_INDR
| N_EXT
))
3312 /* This object file defines this symbol. We must link it
3313 in. This is true regardless of whether the current
3314 definition of the symbol is undefined or common.
3316 If the current definition is common, we have a case in
3317 which we have already seen an object file including:
3319 and this object file from the archive includes:
3321 In such a case, whether to include this object is target
3322 dependant for backward compatibility.
3324 FIXME: The SunOS 4.1.3 linker will pull in the archive
3325 element if the symbol is defined in the .data section,
3326 but not if it is defined in the .text section. That
3327 seems a bit crazy to me, and it has not been implemented
3328 yet. However, it might be correct. */
3329 if (h
->type
== bfd_link_hash_common
)
3333 switch (info
->common_skip_ar_symbols
)
3335 case bfd_link_common_skip_none
:
3337 case bfd_link_common_skip_text
:
3338 skip
= (type
== (N_TEXT
| N_EXT
));
3340 case bfd_link_common_skip_data
:
3341 skip
= (type
== (N_DATA
| N_EXT
));
3343 case bfd_link_common_skip_all
:
3352 if (!(*info
->callbacks
3353 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3359 if (type
== (N_UNDF
| N_EXT
))
3363 value
= GET_WORD (abfd
, p
->e_value
);
3366 /* This symbol is common in the object from the archive
3368 if (h
->type
== bfd_link_hash_undefined
)
3373 symbfd
= h
->u
.undef
.abfd
;
3376 /* This symbol was created as undefined from
3377 outside BFD. We assume that we should link
3378 in the object file. This is done for the -u
3379 option in the linker. */
3380 if (!(*info
->callbacks
3381 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3386 /* Turn the current link symbol into a common
3387 symbol. It is already on the undefs list. */
3388 h
->type
= bfd_link_hash_common
;
3389 h
->u
.c
.p
= (struct bfd_link_hash_common_entry
*)
3390 bfd_hash_allocate (&info
->hash
->table
,
3391 sizeof (struct bfd_link_hash_common_entry
));
3392 if (h
->u
.c
.p
== NULL
)
3395 h
->u
.c
.size
= value
;
3397 /* FIXME: This isn't quite right. The maximum
3398 alignment of a common symbol should be set by the
3399 architecture of the output file, not of the input
3401 power
= bfd_log2 (value
);
3402 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3403 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3404 h
->u
.c
.p
->alignment_power
= power
;
3406 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3411 /* Adjust the size of the common symbol if
3413 if (value
> h
->u
.c
.size
)
3414 h
->u
.c
.size
= value
;
3424 /* This symbol is weak but defined. We must pull it in if
3425 the current link symbol is undefined, but we don't want
3426 it if the current link symbol is common. */
3427 if (h
->type
== bfd_link_hash_undefined
)
3429 if (!(*info
->callbacks
3430 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
3438 /* We do not need this object file. */
3441 /* Check a single archive element to see if we need to include it in
3442 the link. *PNEEDED is set according to whether this element is
3443 needed in the link or not. This is called from
3444 _bfd_generic_link_add_archive_symbols. */
3447 aout_link_check_archive_element (bfd
*abfd
,
3448 struct bfd_link_info
*info
,
3449 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
3450 const char *name ATTRIBUTE_UNUSED
,
3451 bfd_boolean
*pneeded
)
3456 if (!aout_get_external_symbols (abfd
))
3460 if (!aout_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
3466 /* Potentially, the add_archive_element hook may have set a
3467 substitute BFD for us. */
3470 if (!info
->keep_memory
3471 && !aout_link_free_symbols (oldbfd
))
3473 if (!aout_get_external_symbols (abfd
))
3476 if (!aout_link_add_symbols (abfd
, info
))
3480 if (!info
->keep_memory
|| !needed
)
3482 if (!aout_link_free_symbols (abfd
))
3489 /* Given an a.out BFD, add symbols to the global hash table as
3493 NAME (aout
, link_add_symbols
) (bfd
*abfd
, struct bfd_link_info
*info
)
3495 switch (bfd_get_format (abfd
))
3498 return aout_link_add_object_symbols (abfd
, info
);
3500 return _bfd_generic_link_add_archive_symbols
3501 (abfd
, info
, aout_link_check_archive_element
);
3503 bfd_set_error (bfd_error_wrong_format
);
3508 /* A hash table used for header files with N_BINCL entries. */
3510 struct aout_link_includes_table
3512 struct bfd_hash_table root
;
3515 /* A linked list of totals that we have found for a particular header
3518 struct aout_link_includes_totals
3520 struct aout_link_includes_totals
*next
;
3524 /* An entry in the header file hash table. */
3526 struct aout_link_includes_entry
3528 struct bfd_hash_entry root
;
3529 /* List of totals we have found for this file. */
3530 struct aout_link_includes_totals
*totals
;
3533 /* Look up an entry in an the header file hash table. */
3535 #define aout_link_includes_lookup(table, string, create, copy) \
3536 ((struct aout_link_includes_entry *) \
3537 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3539 /* During the final link step we need to pass around a bunch of
3540 information, so we do it in an instance of this structure. */
3542 struct aout_final_link_info
3544 /* General link information. */
3545 struct bfd_link_info
*info
;
3548 /* Reloc file positions. */
3549 file_ptr treloff
, dreloff
;
3550 /* File position of symbols. */
3553 struct bfd_strtab_hash
*strtab
;
3554 /* Header file hash table. */
3555 struct aout_link_includes_table includes
;
3556 /* A buffer large enough to hold the contents of any section. */
3558 /* A buffer large enough to hold the relocs of any section. */
3560 /* A buffer large enough to hold the symbol map of any input BFD. */
3562 /* A buffer large enough to hold output symbols of any input BFD. */
3563 struct external_nlist
*output_syms
;
3566 /* The function to create a new entry in the header file hash table. */
3568 static struct bfd_hash_entry
*
3569 aout_link_includes_newfunc (struct bfd_hash_entry
*entry
,
3570 struct bfd_hash_table
*table
,
3573 struct aout_link_includes_entry
*ret
=
3574 (struct aout_link_includes_entry
*) entry
;
3576 /* Allocate the structure if it has not already been allocated by a
3579 ret
= (struct aout_link_includes_entry
*)
3580 bfd_hash_allocate (table
, sizeof (* ret
));
3584 /* Call the allocation method of the superclass. */
3585 ret
= ((struct aout_link_includes_entry
*)
3586 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3589 /* Set local fields. */
3593 return (struct bfd_hash_entry
*) ret
;
3596 /* Write out a symbol that was not associated with an a.out input
3600 aout_link_write_other_symbol (struct bfd_hash_entry
*bh
, void *data
)
3602 struct aout_link_hash_entry
*h
= (struct aout_link_hash_entry
*) bh
;
3603 struct aout_final_link_info
*flaginfo
= (struct aout_final_link_info
*) data
;
3607 struct external_nlist outsym
;
3611 if (h
->root
.type
== bfd_link_hash_warning
)
3613 h
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
3614 if (h
->root
.type
== bfd_link_hash_new
)
3618 output_bfd
= flaginfo
->output_bfd
;
3620 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
3622 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
3623 (output_bfd
, flaginfo
->info
, h
)))
3625 /* FIXME: No way to handle errors. */
3635 /* An indx of -2 means the symbol must be written. */
3637 && (flaginfo
->info
->strip
== strip_all
3638 || (flaginfo
->info
->strip
== strip_some
3639 && bfd_hash_lookup (flaginfo
->info
->keep_hash
, h
->root
.root
.string
,
3640 FALSE
, FALSE
) == NULL
)))
3643 switch (h
->root
.type
)
3646 case bfd_link_hash_warning
:
3648 /* Avoid variable not initialized warnings. */
3650 case bfd_link_hash_new
:
3651 /* This can happen for set symbols when sets are not being
3654 case bfd_link_hash_undefined
:
3655 type
= N_UNDF
| N_EXT
;
3658 case bfd_link_hash_defined
:
3659 case bfd_link_hash_defweak
:
3663 sec
= h
->root
.u
.def
.section
->output_section
;
3664 BFD_ASSERT (bfd_is_abs_section (sec
)
3665 || sec
->owner
== output_bfd
);
3666 if (sec
== obj_textsec (output_bfd
))
3667 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
3668 else if (sec
== obj_datasec (output_bfd
))
3669 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
3670 else if (sec
== obj_bsssec (output_bfd
))
3671 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
3673 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
3675 val
= (h
->root
.u
.def
.value
3677 + h
->root
.u
.def
.section
->output_offset
);
3680 case bfd_link_hash_common
:
3681 type
= N_UNDF
| N_EXT
;
3682 val
= h
->root
.u
.c
.size
;
3684 case bfd_link_hash_undefweak
:
3688 case bfd_link_hash_indirect
:
3689 /* We ignore these symbols, since the indirected symbol is
3690 already in the hash table. */
3694 H_PUT_8 (output_bfd
, type
, outsym
.e_type
);
3695 H_PUT_8 (output_bfd
, 0, outsym
.e_other
);
3696 H_PUT_16 (output_bfd
, 0, outsym
.e_desc
);
3697 indx
= add_to_stringtab (output_bfd
, flaginfo
->strtab
, h
->root
.root
.string
,
3699 if (indx
== - (bfd_size_type
) 1)
3700 /* FIXME: No way to handle errors. */
3703 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
3704 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
3706 amt
= EXTERNAL_NLIST_SIZE
;
3707 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0
3708 || bfd_bwrite ((void *) &outsym
, amt
, output_bfd
) != amt
)
3709 /* FIXME: No way to handle errors. */
3712 flaginfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
3713 h
->indx
= obj_aout_external_sym_count (output_bfd
);
3714 ++obj_aout_external_sym_count (output_bfd
);
3719 /* Handle a link order which is supposed to generate a reloc. */
3722 aout_link_reloc_link_order (struct aout_final_link_info
*flaginfo
,
3724 struct bfd_link_order
*p
)
3726 struct bfd_link_order_reloc
*pr
;
3729 reloc_howto_type
*howto
;
3730 file_ptr
*reloff_ptr
= NULL
;
3731 struct reloc_std_external srel
;
3732 struct reloc_ext_external erel
;
3738 if (p
->type
== bfd_section_reloc_link_order
)
3741 if (bfd_is_abs_section (pr
->u
.section
))
3742 r_index
= N_ABS
| N_EXT
;
3745 BFD_ASSERT (pr
->u
.section
->owner
== flaginfo
->output_bfd
);
3746 r_index
= pr
->u
.section
->target_index
;
3751 struct aout_link_hash_entry
*h
;
3753 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
3755 h
= ((struct aout_link_hash_entry
*)
3756 bfd_wrapped_link_hash_lookup (flaginfo
->output_bfd
, flaginfo
->info
,
3757 pr
->u
.name
, FALSE
, FALSE
, TRUE
));
3763 /* We decided to strip this symbol, but it turns out that we
3764 can't. Note that we lose the other and desc information
3765 here. I don't think that will ever matter for a global
3769 if (!aout_link_write_other_symbol (&h
->root
.root
, flaginfo
))
3775 (*flaginfo
->info
->callbacks
->unattached_reloc
)
3776 (flaginfo
->info
, pr
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
3781 howto
= bfd_reloc_type_lookup (flaginfo
->output_bfd
, pr
->reloc
);
3784 bfd_set_error (bfd_error_bad_value
);
3788 if (o
== obj_textsec (flaginfo
->output_bfd
))
3789 reloff_ptr
= &flaginfo
->treloff
;
3790 else if (o
== obj_datasec (flaginfo
->output_bfd
))
3791 reloff_ptr
= &flaginfo
->dreloff
;
3795 if (obj_reloc_entry_size (flaginfo
->output_bfd
) == RELOC_STD_SIZE
)
3798 MY_put_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
3808 r_pcrel
= (int) howto
->pc_relative
;
3809 r_baserel
= (howto
->type
& 8) != 0;
3810 r_jmptable
= (howto
->type
& 16) != 0;
3811 r_relative
= (howto
->type
& 32) != 0;
3812 r_length
= howto
->size
;
3814 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, srel
.r_address
);
3815 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3817 srel
.r_index
[0] = r_index
>> 16;
3818 srel
.r_index
[1] = r_index
>> 8;
3819 srel
.r_index
[2] = r_index
;
3821 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
3822 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
3823 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
3824 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
3825 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
3826 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
3830 srel
.r_index
[2] = r_index
>> 16;
3831 srel
.r_index
[1] = r_index
>> 8;
3832 srel
.r_index
[0] = r_index
;
3834 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
3835 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
3836 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
3837 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
3838 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
3839 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
3843 rel_ptr
= (void *) &srel
;
3845 /* We have to write the addend into the object file, since
3846 standard a.out relocs are in place. It would be more
3847 reliable if we had the current contents of the file here,
3848 rather than assuming zeroes, but we can't read the file since
3849 it was opened using bfd_openw. */
3850 if (pr
->addend
!= 0)
3853 bfd_reloc_status_type r
;
3857 size
= bfd_get_reloc_size (howto
);
3858 buf
= (bfd_byte
*) bfd_zmalloc (size
);
3859 if (buf
== NULL
&& size
!= 0)
3861 r
= MY_relocate_contents (howto
, flaginfo
->output_bfd
,
3862 (bfd_vma
) pr
->addend
, buf
);
3868 case bfd_reloc_outofrange
:
3870 case bfd_reloc_overflow
:
3871 (*flaginfo
->info
->callbacks
->reloc_overflow
)
3872 (flaginfo
->info
, NULL
,
3873 (p
->type
== bfd_section_reloc_link_order
3874 ? bfd_section_name (pr
->u
.section
)
3876 howto
->name
, pr
->addend
, NULL
, NULL
, (bfd_vma
) 0);
3879 ok
= bfd_set_section_contents (flaginfo
->output_bfd
, o
, (void *) buf
,
3880 (file_ptr
) p
->offset
, size
);
3888 #ifdef MY_put_ext_reloc
3889 MY_put_ext_reloc (flaginfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
3890 howto
, &erel
, pr
->addend
);
3892 PUT_WORD (flaginfo
->output_bfd
, p
->offset
, erel
.r_address
);
3894 if (bfd_header_big_endian (flaginfo
->output_bfd
))
3896 erel
.r_index
[0] = r_index
>> 16;
3897 erel
.r_index
[1] = r_index
>> 8;
3898 erel
.r_index
[2] = r_index
;
3900 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
3901 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
3905 erel
.r_index
[2] = r_index
>> 16;
3906 erel
.r_index
[1] = r_index
>> 8;
3907 erel
.r_index
[0] = r_index
;
3909 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
3910 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
3913 PUT_WORD (flaginfo
->output_bfd
, (bfd_vma
) pr
->addend
, erel
.r_addend
);
3914 #endif /* MY_put_ext_reloc */
3916 rel_ptr
= (void *) &erel
;
3919 amt
= obj_reloc_entry_size (flaginfo
->output_bfd
);
3920 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
3921 || bfd_bwrite (rel_ptr
, amt
, flaginfo
->output_bfd
) != amt
)
3924 *reloff_ptr
+= obj_reloc_entry_size (flaginfo
->output_bfd
);
3926 /* Assert that the relocs have not run into the symbols, and that n
3927 the text relocs have not run into the data relocs. */
3928 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
3929 && (reloff_ptr
!= &flaginfo
->treloff
3931 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
3936 /* Get the section corresponding to a reloc index. */
3938 static INLINE asection
*
3939 aout_reloc_index_to_section (bfd
*abfd
, int indx
)
3941 switch (indx
& N_TYPE
)
3943 case N_TEXT
: return obj_textsec (abfd
);
3944 case N_DATA
: return obj_datasec (abfd
);
3945 case N_BSS
: return obj_bsssec (abfd
);
3947 case N_UNDF
: return bfd_abs_section_ptr
;
3953 /* Relocate an a.out section using standard a.out relocs. */
3956 aout_link_input_section_std (struct aout_final_link_info
*flaginfo
,
3958 asection
*input_section
,
3959 struct reloc_std_external
*relocs
,
3960 bfd_size_type rel_size
,
3963 bfd_boolean (*check_dynamic_reloc
)
3964 (struct bfd_link_info
*, bfd
*, asection
*,
3965 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
3968 bfd_boolean relocatable
;
3969 struct external_nlist
*syms
;
3971 struct aout_link_hash_entry
**sym_hashes
;
3973 bfd_size_type reloc_count
;
3974 struct reloc_std_external
*rel
;
3975 struct reloc_std_external
*rel_end
;
3977 output_bfd
= flaginfo
->output_bfd
;
3978 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
3980 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
3981 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
3982 == output_bfd
->xvec
->header_byteorder
);
3984 relocatable
= bfd_link_relocatable (flaginfo
->info
);
3985 syms
= obj_aout_external_syms (input_bfd
);
3986 strings
= obj_aout_external_strings (input_bfd
);
3987 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
3988 symbol_map
= flaginfo
->symbol_map
;
3990 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
3992 rel_end
= rel
+ reloc_count
;
3993 for (; rel
< rel_end
; rel
++)
4000 reloc_howto_type
*howto
;
4001 struct aout_link_hash_entry
*h
= NULL
;
4003 bfd_reloc_status_type r
;
4005 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4007 #ifdef MY_reloc_howto
4008 howto
= MY_reloc_howto (input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
4014 unsigned int howto_idx
;
4016 if (bfd_header_big_endian (input_bfd
))
4018 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4019 | ((unsigned int) rel
->r_index
[1] << 8)
4021 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
4022 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
4023 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
4024 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
4025 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
4026 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
4027 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
4031 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4032 | ((unsigned int) rel
->r_index
[1] << 8)
4034 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
4035 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
4036 r_baserel
= (0 != (rel
->r_type
[0]
4037 & RELOC_STD_BITS_BASEREL_LITTLE
));
4038 r_jmptable
= (0 != (rel
->r_type
[0]
4039 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
4040 r_relative
= (0 != (rel
->r_type
[0]
4041 & RELOC_STD_BITS_RELATIVE_LITTLE
));
4042 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
4043 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
4046 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
4047 + 16 * r_jmptable
+ 32 * r_relative
);
4048 if (howto_idx
< TABLE_SIZE (howto_table_std
))
4049 howto
= howto_table_std
+ howto_idx
;
4057 _bfd_error_handler (_("%pB: unsupported relocation type"),
4059 bfd_set_error (bfd_error_bad_value
);
4065 /* We are generating a relocatable output file, and must
4066 modify the reloc accordingly. */
4069 /* If we know the symbol this relocation is against,
4070 convert it into a relocation against a section. This
4071 is what the native linker does. */
4072 h
= sym_hashes
[r_index
];
4074 && (h
->root
.type
== bfd_link_hash_defined
4075 || h
->root
.type
== bfd_link_hash_defweak
))
4077 asection
*output_section
;
4079 /* Change the r_extern value. */
4080 if (bfd_header_big_endian (output_bfd
))
4081 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
4083 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
4085 /* Compute a new r_index. */
4086 output_section
= h
->root
.u
.def
.section
->output_section
;
4087 if (output_section
== obj_textsec (output_bfd
))
4089 else if (output_section
== obj_datasec (output_bfd
))
4091 else if (output_section
== obj_bsssec (output_bfd
))
4096 /* Add the symbol value and the section VMA to the
4097 addend stored in the contents. */
4098 relocation
= (h
->root
.u
.def
.value
4099 + output_section
->vma
4100 + h
->root
.u
.def
.section
->output_offset
);
4104 /* We must change r_index according to the symbol
4106 r_index
= symbol_map
[r_index
];
4112 /* We decided to strip this symbol, but it
4113 turns out that we can't. Note that we
4114 lose the other and desc information here.
4115 I don't think that will ever matter for a
4121 if (!aout_link_write_other_symbol (&h
->root
.root
,
4131 name
= strings
+ GET_WORD (input_bfd
,
4132 syms
[r_index
].e_strx
);
4133 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4134 (flaginfo
->info
, name
,
4135 input_bfd
, input_section
, r_addr
);
4143 /* Write out the new r_index value. */
4144 if (bfd_header_big_endian (output_bfd
))
4146 rel
->r_index
[0] = r_index
>> 16;
4147 rel
->r_index
[1] = r_index
>> 8;
4148 rel
->r_index
[2] = r_index
;
4152 rel
->r_index
[2] = r_index
>> 16;
4153 rel
->r_index
[1] = r_index
>> 8;
4154 rel
->r_index
[0] = r_index
;
4161 /* This is a relocation against a section. We must
4162 adjust by the amount that the section moved. */
4163 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4164 relocation
= (section
->output_section
->vma
4165 + section
->output_offset
4169 /* Change the address of the relocation. */
4170 PUT_WORD (output_bfd
,
4171 r_addr
+ input_section
->output_offset
,
4174 /* Adjust a PC relative relocation by removing the reference
4175 to the original address in the section and including the
4176 reference to the new address. */
4178 relocation
-= (input_section
->output_section
->vma
4179 + input_section
->output_offset
4180 - input_section
->vma
);
4182 #ifdef MY_relocatable_reloc
4183 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4186 if (relocation
== 0)
4189 r
= MY_relocate_contents (howto
,
4190 input_bfd
, relocation
,
4197 /* We are generating an executable, and must do a full
4203 h
= sym_hashes
[r_index
];
4206 && (h
->root
.type
== bfd_link_hash_defined
4207 || h
->root
.type
== bfd_link_hash_defweak
))
4209 relocation
= (h
->root
.u
.def
.value
4210 + h
->root
.u
.def
.section
->output_section
->vma
4211 + h
->root
.u
.def
.section
->output_offset
);
4214 && h
->root
.type
== bfd_link_hash_undefweak
)
4226 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4227 relocation
= (section
->output_section
->vma
4228 + section
->output_offset
4231 relocation
+= input_section
->vma
;
4234 if (check_dynamic_reloc
!= NULL
)
4238 if (! ((*check_dynamic_reloc
)
4239 (flaginfo
->info
, input_bfd
, input_section
, h
,
4240 (void *) rel
, contents
, &skip
, &relocation
)))
4246 /* Now warn if a global symbol is undefined. We could not
4247 do this earlier, because check_dynamic_reloc might want
4248 to skip this reloc. */
4249 if (hundef
&& ! bfd_link_pic (flaginfo
->info
) && ! r_baserel
)
4254 name
= h
->root
.root
.string
;
4256 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4257 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4258 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4261 r
= MY_final_link_relocate (howto
,
4262 input_bfd
, input_section
,
4263 contents
, r_addr
, relocation
,
4267 if (r
!= bfd_reloc_ok
)
4272 case bfd_reloc_outofrange
:
4274 case bfd_reloc_overflow
:
4281 name
= strings
+ GET_WORD (input_bfd
,
4282 syms
[r_index
].e_strx
);
4287 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4288 name
= bfd_section_name (s
);
4290 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4291 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
4292 (bfd_vma
) 0, input_bfd
, input_section
, r_addr
);
4302 /* Relocate an a.out section using extended a.out relocs. */
4305 aout_link_input_section_ext (struct aout_final_link_info
*flaginfo
,
4307 asection
*input_section
,
4308 struct reloc_ext_external
*relocs
,
4309 bfd_size_type rel_size
,
4312 bfd_boolean (*check_dynamic_reloc
)
4313 (struct bfd_link_info
*, bfd
*, asection
*,
4314 struct aout_link_hash_entry
*, void *, bfd_byte
*, bfd_boolean
*,
4317 bfd_boolean relocatable
;
4318 struct external_nlist
*syms
;
4320 struct aout_link_hash_entry
**sym_hashes
;
4322 bfd_size_type reloc_count
;
4323 struct reloc_ext_external
*rel
;
4324 struct reloc_ext_external
*rel_end
;
4326 output_bfd
= flaginfo
->output_bfd
;
4327 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4329 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
4330 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4331 == output_bfd
->xvec
->header_byteorder
);
4333 relocatable
= bfd_link_relocatable (flaginfo
->info
);
4334 syms
= obj_aout_external_syms (input_bfd
);
4335 strings
= obj_aout_external_strings (input_bfd
);
4336 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4337 symbol_map
= flaginfo
->symbol_map
;
4339 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
4341 rel_end
= rel
+ reloc_count
;
4342 for (; rel
< rel_end
; rel
++)
4347 unsigned int r_type
;
4349 struct aout_link_hash_entry
*h
= NULL
;
4350 asection
*r_section
= NULL
;
4353 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4355 if (bfd_header_big_endian (input_bfd
))
4357 r_index
= (((unsigned int) rel
->r_index
[0] << 16)
4358 | ((unsigned int) rel
->r_index
[1] << 8)
4360 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
4361 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
4362 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
4366 r_index
= (((unsigned int) rel
->r_index
[2] << 16)
4367 | ((unsigned int) rel
->r_index
[1] << 8)
4369 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
4370 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
4371 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
4374 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
4376 if (r_type
>= TABLE_SIZE (howto_table_ext
))
4378 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4380 bfd_set_error (bfd_error_bad_value
);
4386 /* We are generating a relocatable output file, and must
4387 modify the reloc accordingly. */
4389 || r_type
== (unsigned int) RELOC_BASE10
4390 || r_type
== (unsigned int) RELOC_BASE13
4391 || r_type
== (unsigned int) RELOC_BASE22
)
4393 /* If we know the symbol this relocation is against,
4394 convert it into a relocation against a section. This
4395 is what the native linker does. */
4396 if (r_type
== (unsigned int) RELOC_BASE10
4397 || r_type
== (unsigned int) RELOC_BASE13
4398 || r_type
== (unsigned int) RELOC_BASE22
)
4401 h
= sym_hashes
[r_index
];
4403 && (h
->root
.type
== bfd_link_hash_defined
4404 || h
->root
.type
== bfd_link_hash_defweak
))
4406 asection
*output_section
;
4408 /* Change the r_extern value. */
4409 if (bfd_header_big_endian (output_bfd
))
4410 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
4412 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
4414 /* Compute a new r_index. */
4415 output_section
= h
->root
.u
.def
.section
->output_section
;
4416 if (output_section
== obj_textsec (output_bfd
))
4418 else if (output_section
== obj_datasec (output_bfd
))
4420 else if (output_section
== obj_bsssec (output_bfd
))
4425 /* Add the symbol value and the section VMA to the
4427 relocation
= (h
->root
.u
.def
.value
4428 + output_section
->vma
4429 + h
->root
.u
.def
.section
->output_offset
);
4431 /* Now RELOCATION is the VMA of the final
4432 destination. If this is a PC relative reloc,
4433 then ADDEND is the negative of the source VMA.
4434 We want to set ADDEND to the difference between
4435 the destination VMA and the source VMA, which
4436 means we must adjust RELOCATION by the change in
4437 the source VMA. This is done below. */
4441 /* We must change r_index according to the symbol
4443 r_index
= symbol_map
[r_index
];
4449 /* We decided to strip this symbol, but it
4450 turns out that we can't. Note that we
4451 lose the other and desc information here.
4452 I don't think that will ever matter for a
4458 if (!aout_link_write_other_symbol (&h
->root
.root
,
4468 name
= strings
+ GET_WORD (input_bfd
,
4469 syms
[r_index
].e_strx
);
4470 (*flaginfo
->info
->callbacks
->unattached_reloc
)
4471 (flaginfo
->info
, name
,
4472 input_bfd
, input_section
, r_addr
);
4479 /* If this is a PC relative reloc, then the addend
4480 is the negative of the source VMA. We must
4481 adjust it by the change in the source VMA. This
4485 /* Write out the new r_index value. */
4486 if (bfd_header_big_endian (output_bfd
))
4488 rel
->r_index
[0] = r_index
>> 16;
4489 rel
->r_index
[1] = r_index
>> 8;
4490 rel
->r_index
[2] = r_index
;
4494 rel
->r_index
[2] = r_index
>> 16;
4495 rel
->r_index
[1] = r_index
>> 8;
4496 rel
->r_index
[0] = r_index
;
4501 /* This is a relocation against a section. We must
4502 adjust by the amount that the section moved. */
4503 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4504 relocation
= (r_section
->output_section
->vma
4505 + r_section
->output_offset
4508 /* If this is a PC relative reloc, then the addend is
4509 the difference in VMA between the destination and the
4510 source. We have just adjusted for the change in VMA
4511 of the destination, so we must also adjust by the
4512 change in VMA of the source. This is done below. */
4515 /* As described above, we must always adjust a PC relative
4516 reloc by the change in VMA of the source. However, if
4517 pcrel_offset is set, then the addend does not include the
4518 location within the section, in which case we don't need
4519 to adjust anything. */
4520 if (howto_table_ext
[r_type
].pc_relative
4521 && ! howto_table_ext
[r_type
].pcrel_offset
)
4522 relocation
-= (input_section
->output_section
->vma
4523 + input_section
->output_offset
4524 - input_section
->vma
);
4526 /* Change the addend if necessary. */
4527 if (relocation
!= 0)
4528 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
4530 /* Change the address of the relocation. */
4531 PUT_WORD (output_bfd
,
4532 r_addr
+ input_section
->output_offset
,
4538 bfd_reloc_status_type r
;
4540 /* We are generating an executable, and must do a full
4546 h
= sym_hashes
[r_index
];
4549 && (h
->root
.type
== bfd_link_hash_defined
4550 || h
->root
.type
== bfd_link_hash_defweak
))
4552 relocation
= (h
->root
.u
.def
.value
4553 + h
->root
.u
.def
.section
->output_section
->vma
4554 + h
->root
.u
.def
.section
->output_offset
);
4557 && h
->root
.type
== bfd_link_hash_undefweak
)
4565 else if (r_type
== (unsigned int) RELOC_BASE10
4566 || r_type
== (unsigned int) RELOC_BASE13
4567 || r_type
== (unsigned int) RELOC_BASE22
)
4569 struct external_nlist
*sym
;
4572 /* For base relative relocs, r_index is always an index
4573 into the symbol table, even if r_extern is 0. */
4574 sym
= syms
+ r_index
;
4575 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4576 if ((type
& N_TYPE
) == N_TEXT
4578 r_section
= obj_textsec (input_bfd
);
4579 else if ((type
& N_TYPE
) == N_DATA
4581 r_section
= obj_datasec (input_bfd
);
4582 else if ((type
& N_TYPE
) == N_BSS
4584 r_section
= obj_bsssec (input_bfd
);
4585 else if ((type
& N_TYPE
) == N_ABS
4587 r_section
= bfd_abs_section_ptr
;
4590 relocation
= (r_section
->output_section
->vma
4591 + r_section
->output_offset
4592 + (GET_WORD (input_bfd
, sym
->e_value
)
4597 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4599 /* If this is a PC relative reloc, then R_ADDEND is the
4600 difference between the two vmas, or
4601 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4603 old_dest_sec == section->vma
4605 old_src_sec == input_section->vma
4607 old_src_off == r_addr
4609 _bfd_final_link_relocate expects RELOCATION +
4610 R_ADDEND to be the VMA of the destination minus
4611 r_addr (the minus r_addr is because this relocation
4612 is not pcrel_offset, which is a bit confusing and
4613 should, perhaps, be changed), or
4616 new_dest_sec == output_section->vma + output_offset
4617 We arrange for this to happen by setting RELOCATION to
4618 new_dest_sec + old_src_sec - old_dest_sec
4620 If this is not a PC relative reloc, then R_ADDEND is
4621 simply the VMA of the destination, so we set
4622 RELOCATION to the change in the destination VMA, or
4623 new_dest_sec - old_dest_sec
4625 relocation
= (r_section
->output_section
->vma
4626 + r_section
->output_offset
4628 if (howto_table_ext
[r_type
].pc_relative
)
4629 relocation
+= input_section
->vma
;
4632 if (check_dynamic_reloc
!= NULL
)
4636 if (! ((*check_dynamic_reloc
)
4637 (flaginfo
->info
, input_bfd
, input_section
, h
,
4638 (void *) rel
, contents
, &skip
, &relocation
)))
4644 /* Now warn if a global symbol is undefined. We could not
4645 do this earlier, because check_dynamic_reloc might want
4646 to skip this reloc. */
4648 && ! bfd_link_pic (flaginfo
->info
)
4649 && r_type
!= (unsigned int) RELOC_BASE10
4650 && r_type
!= (unsigned int) RELOC_BASE13
4651 && r_type
!= (unsigned int) RELOC_BASE22
)
4656 name
= h
->root
.root
.string
;
4658 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
4659 (*flaginfo
->info
->callbacks
->undefined_symbol
)
4660 (flaginfo
->info
, name
, input_bfd
, input_section
, r_addr
, TRUE
);
4663 if (r_type
!= (unsigned int) RELOC_SPARC_REV32
)
4664 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
4665 input_bfd
, input_section
,
4666 contents
, r_addr
, relocation
,
4672 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
4673 x
= x
+ relocation
+ r_addend
;
4674 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
4678 if (r
!= bfd_reloc_ok
)
4683 case bfd_reloc_outofrange
:
4685 case bfd_reloc_overflow
:
4692 || r_type
== (unsigned int) RELOC_BASE10
4693 || r_type
== (unsigned int) RELOC_BASE13
4694 || r_type
== (unsigned int) RELOC_BASE22
)
4695 name
= strings
+ GET_WORD (input_bfd
,
4696 syms
[r_index
].e_strx
);
4701 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
4702 name
= bfd_section_name (s
);
4704 (*flaginfo
->info
->callbacks
->reloc_overflow
)
4705 (flaginfo
->info
, (h
? &h
->root
: NULL
), name
,
4706 howto_table_ext
[r_type
].name
,
4707 r_addend
, input_bfd
, input_section
, r_addr
);
4718 /* Link an a.out section into the output file. */
4721 aout_link_input_section (struct aout_final_link_info
*flaginfo
,
4723 asection
*input_section
,
4724 file_ptr
*reloff_ptr
,
4725 bfd_size_type rel_size
)
4727 bfd_size_type input_size
;
4730 /* Get the section contents. */
4731 input_size
= input_section
->size
;
4732 if (! bfd_get_section_contents (input_bfd
, input_section
,
4733 (void *) flaginfo
->contents
,
4734 (file_ptr
) 0, input_size
))
4737 /* Read in the relocs if we haven't already done it. */
4738 if (aout_section_data (input_section
) != NULL
4739 && aout_section_data (input_section
)->relocs
!= NULL
)
4740 relocs
= aout_section_data (input_section
)->relocs
;
4743 relocs
= flaginfo
->relocs
;
4746 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4747 || bfd_bread (relocs
, rel_size
, input_bfd
) != rel_size
)
4752 /* Relocate the section contents. */
4753 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4755 if (! aout_link_input_section_std (flaginfo
, input_bfd
, input_section
,
4756 (struct reloc_std_external
*) relocs
,
4757 rel_size
, flaginfo
->contents
))
4762 if (! aout_link_input_section_ext (flaginfo
, input_bfd
, input_section
,
4763 (struct reloc_ext_external
*) relocs
,
4764 rel_size
, flaginfo
->contents
))
4768 /* Write out the section contents. */
4769 if (! bfd_set_section_contents (flaginfo
->output_bfd
,
4770 input_section
->output_section
,
4771 (void *) flaginfo
->contents
,
4772 (file_ptr
) input_section
->output_offset
,
4776 /* If we are producing relocatable output, the relocs were
4777 modified, and we now write them out. */
4778 if (bfd_link_relocatable (flaginfo
->info
) && rel_size
> 0)
4780 if (bfd_seek (flaginfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4782 if (bfd_bwrite (relocs
, rel_size
, flaginfo
->output_bfd
) != rel_size
)
4784 *reloff_ptr
+= rel_size
;
4786 /* Assert that the relocs have not run into the symbols, and
4787 that if these are the text relocs they have not run into the
4789 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (flaginfo
->output_bfd
)
4790 && (reloff_ptr
!= &flaginfo
->treloff
4792 <= obj_datasec (flaginfo
->output_bfd
)->rel_filepos
)));
4798 /* Adjust and write out the symbols for an a.out file. Set the new
4799 symbol indices into a symbol_map. */
4802 aout_link_write_symbols (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
4805 bfd_size_type sym_count
;
4807 enum bfd_link_strip strip
;
4808 enum bfd_link_discard discard
;
4809 struct external_nlist
*outsym
;
4810 bfd_size_type strtab_index
;
4811 struct external_nlist
*sym
;
4812 struct external_nlist
*sym_end
;
4813 struct aout_link_hash_entry
**sym_hash
;
4816 bfd_boolean skip_next
;
4818 output_bfd
= flaginfo
->output_bfd
;
4819 sym_count
= obj_aout_external_sym_count (input_bfd
);
4820 strings
= obj_aout_external_strings (input_bfd
);
4821 strip
= flaginfo
->info
->strip
;
4822 discard
= flaginfo
->info
->discard
;
4823 outsym
= flaginfo
->output_syms
;
4825 /* First write out a symbol for this object file, unless we are
4826 discarding such symbols. */
4827 if (strip
!= strip_all
4828 && (strip
!= strip_some
4829 || bfd_hash_lookup (flaginfo
->info
->keep_hash
, input_bfd
->filename
,
4830 FALSE
, FALSE
) != NULL
)
4831 && discard
!= discard_all
)
4833 H_PUT_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4834 H_PUT_8 (output_bfd
, 0, outsym
->e_other
);
4835 H_PUT_16 (output_bfd
, 0, outsym
->e_desc
);
4836 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
4837 input_bfd
->filename
, FALSE
);
4838 if (strtab_index
== (bfd_size_type
) -1)
4840 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4841 PUT_WORD (output_bfd
,
4842 (bfd_section_vma (obj_textsec (input_bfd
)->output_section
)
4843 + obj_textsec (input_bfd
)->output_offset
),
4845 ++obj_aout_external_sym_count (output_bfd
);
4851 sym
= obj_aout_external_syms (input_bfd
);
4852 sym_end
= sym
+ sym_count
;
4853 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4854 symbol_map
= flaginfo
->symbol_map
;
4855 memset (symbol_map
, 0, (size_t) sym_count
* sizeof *symbol_map
);
4856 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4860 struct aout_link_hash_entry
*h
;
4866 /* We set *symbol_map to 0 above for all symbols. If it has
4867 already been set to -1 for this symbol, it means that we are
4868 discarding it because it appears in a duplicate header file.
4869 See the N_BINCL code below. */
4870 if (*symbol_map
== -1)
4873 /* Initialize *symbol_map to -1, which means that the symbol was
4874 not copied into the output file. We will change it later if
4875 we do copy the symbol over. */
4878 type
= H_GET_8 (input_bfd
, sym
->e_type
);
4879 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4885 /* Pass this symbol through. It is the target of an
4886 indirect or warning symbol. */
4887 val
= GET_WORD (input_bfd
, sym
->e_value
);
4892 /* Skip this symbol, which is the target of an indirect
4893 symbol that we have changed to no longer be an indirect
4900 struct aout_link_hash_entry
*hresolve
;
4902 /* We have saved the hash table entry for this symbol, if
4903 there is one. Note that we could just look it up again
4904 in the hash table, provided we first check that it is an
4908 /* Use the name from the hash table, in case the symbol was
4911 && h
->root
.type
!= bfd_link_hash_warning
)
4912 name
= h
->root
.root
.string
;
4914 /* If this is an indirect or warning symbol, then change
4915 hresolve to the base symbol. We also change *sym_hash so
4916 that the relocation routines relocate against the real
4919 if (h
!= (struct aout_link_hash_entry
*) NULL
4920 && (h
->root
.type
== bfd_link_hash_indirect
4921 || h
->root
.type
== bfd_link_hash_warning
))
4923 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4924 while (hresolve
->root
.type
== bfd_link_hash_indirect
4925 || hresolve
->root
.type
== bfd_link_hash_warning
)
4926 hresolve
= ((struct aout_link_hash_entry
*)
4927 hresolve
->root
.u
.i
.link
);
4928 *sym_hash
= hresolve
;
4931 /* If the symbol has already been written out, skip it. */
4935 if ((type
& N_TYPE
) == N_INDR
4936 || type
== N_WARNING
)
4938 *symbol_map
= h
->indx
;
4942 /* See if we are stripping this symbol. */
4948 case strip_debugger
:
4949 if ((type
& N_STAB
) != 0)
4953 if (bfd_hash_lookup (flaginfo
->info
->keep_hash
, name
, FALSE
, FALSE
)
4968 /* Get the value of the symbol. */
4969 if ((type
& N_TYPE
) == N_TEXT
4971 symsec
= obj_textsec (input_bfd
);
4972 else if ((type
& N_TYPE
) == N_DATA
4974 symsec
= obj_datasec (input_bfd
);
4975 else if ((type
& N_TYPE
) == N_BSS
4977 symsec
= obj_bsssec (input_bfd
);
4978 else if ((type
& N_TYPE
) == N_ABS
4980 symsec
= bfd_abs_section_ptr
;
4981 else if (((type
& N_TYPE
) == N_INDR
4982 && (hresolve
== NULL
4983 || (hresolve
->root
.type
!= bfd_link_hash_defined
4984 && hresolve
->root
.type
!= bfd_link_hash_defweak
4985 && hresolve
->root
.type
!= bfd_link_hash_common
)))
4986 || type
== N_WARNING
)
4988 /* Pass the next symbol through unchanged. The
4989 condition above for indirect symbols is so that if
4990 the indirect symbol was defined, we output it with
4991 the correct definition so the debugger will
4994 val
= GET_WORD (input_bfd
, sym
->e_value
);
4997 else if ((type
& N_STAB
) != 0)
4999 val
= GET_WORD (input_bfd
, sym
->e_value
);
5004 /* If we get here with an indirect symbol, it means that
5005 we are outputting it with a real definition. In such
5006 a case we do not want to output the next symbol,
5007 which is the target of the indirection. */
5008 if ((type
& N_TYPE
) == N_INDR
)
5013 /* We need to get the value from the hash table. We use
5014 hresolve so that if we have defined an indirect
5015 symbol we output the final definition. */
5018 switch (type
& N_TYPE
)
5021 symsec
= obj_textsec (input_bfd
);
5024 symsec
= obj_datasec (input_bfd
);
5027 symsec
= obj_bsssec (input_bfd
);
5030 symsec
= bfd_abs_section_ptr
;
5037 else if (hresolve
->root
.type
== bfd_link_hash_defined
5038 || hresolve
->root
.type
== bfd_link_hash_defweak
)
5040 asection
*input_section
;
5041 asection
*output_section
;
5043 /* This case usually means a common symbol which was
5044 turned into a defined symbol. */
5045 input_section
= hresolve
->root
.u
.def
.section
;
5046 output_section
= input_section
->output_section
;
5047 BFD_ASSERT (bfd_is_abs_section (output_section
)
5048 || output_section
->owner
== output_bfd
);
5049 val
= (hresolve
->root
.u
.def
.value
5050 + bfd_section_vma (output_section
)
5051 + input_section
->output_offset
);
5053 /* Get the correct type based on the section. If
5054 this is a constructed set, force it to be
5055 globally visible. */
5064 if (output_section
== obj_textsec (output_bfd
))
5065 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5068 else if (output_section
== obj_datasec (output_bfd
))
5069 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5072 else if (output_section
== obj_bsssec (output_bfd
))
5073 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5077 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
5081 else if (hresolve
->root
.type
== bfd_link_hash_common
)
5082 val
= hresolve
->root
.u
.c
.size
;
5083 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
5092 val
= (symsec
->output_section
->vma
5093 + symsec
->output_offset
5094 + (GET_WORD (input_bfd
, sym
->e_value
)
5097 /* If this is a global symbol set the written flag, and if
5098 it is a local symbol see if we should discard it. */
5102 h
->indx
= obj_aout_external_sym_count (output_bfd
);
5104 else if ((type
& N_TYPE
) != N_SETT
5105 && (type
& N_TYPE
) != N_SETD
5106 && (type
& N_TYPE
) != N_SETB
5107 && (type
& N_TYPE
) != N_SETA
)
5112 case discard_sec_merge
:
5115 if ((type
& N_STAB
) == 0
5116 && bfd_is_local_label_name (input_bfd
, name
))
5130 /* An N_BINCL symbol indicates the start of the stabs
5131 entries for a header file. We need to scan ahead to the
5132 next N_EINCL symbol, ignoring nesting, adding up all the
5133 characters in the symbol names, not including the file
5134 numbers in types (the first number after an open
5136 if (type
== (int) N_BINCL
)
5138 struct external_nlist
*incl_sym
;
5140 struct aout_link_includes_entry
*incl_entry
;
5141 struct aout_link_includes_totals
*t
;
5145 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
5149 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5150 if (incl_type
== (int) N_EINCL
)
5156 else if (incl_type
== (int) N_BINCL
)
5162 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
5163 for (; *s
!= '\0'; s
++)
5168 /* Skip the file number. */
5170 while (ISDIGIT (*s
))
5178 /* If we have already included a header file with the
5179 same value, then replace this one with an N_EXCL
5181 copy
= (bfd_boolean
) (! flaginfo
->info
->keep_memory
);
5182 incl_entry
= aout_link_includes_lookup (&flaginfo
->includes
,
5184 if (incl_entry
== NULL
)
5186 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
5187 if (t
->total
== val
)
5191 /* This is the first time we have seen this header
5192 file with this set of stabs strings. */
5193 t
= (struct aout_link_includes_totals
*)
5194 bfd_hash_allocate (&flaginfo
->includes
.root
,
5199 t
->next
= incl_entry
->totals
;
5200 incl_entry
->totals
= t
;
5206 /* This is a duplicate header file. We must change
5207 it to be an N_EXCL entry, and mark all the
5208 included symbols to prevent outputting them. */
5209 type
= (int) N_EXCL
;
5212 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
5214 incl_sym
++, incl_map
++)
5218 incl_type
= H_GET_8 (input_bfd
, incl_sym
->e_type
);
5219 if (incl_type
== (int) N_EINCL
)
5228 else if (incl_type
== (int) N_BINCL
)
5237 /* Copy this symbol into the list of symbols we are going to
5239 H_PUT_8 (output_bfd
, type
, outsym
->e_type
);
5240 H_PUT_8 (output_bfd
, H_GET_8 (input_bfd
, sym
->e_other
), outsym
->e_other
);
5241 H_PUT_16 (output_bfd
, H_GET_16 (input_bfd
, sym
->e_desc
), outsym
->e_desc
);
5243 if (! flaginfo
->info
->keep_memory
)
5245 /* name points into a string table which we are going to
5246 free. If there is a hash table entry, use that string.
5247 Otherwise, copy name into memory. */
5249 name
= h
->root
.root
.string
;
5253 strtab_index
= add_to_stringtab (output_bfd
, flaginfo
->strtab
,
5255 if (strtab_index
== (bfd_size_type
) -1)
5257 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
5258 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
5259 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
5260 ++obj_aout_external_sym_count (output_bfd
);
5264 /* Write out the output symbols we have just constructed. */
5265 if (outsym
> flaginfo
->output_syms
)
5267 bfd_size_type outsym_size
;
5269 if (bfd_seek (output_bfd
, flaginfo
->symoff
, SEEK_SET
) != 0)
5271 outsym_size
= outsym
- flaginfo
->output_syms
;
5272 outsym_size
*= EXTERNAL_NLIST_SIZE
;
5273 if (bfd_bwrite ((void *) flaginfo
->output_syms
, outsym_size
, output_bfd
)
5276 flaginfo
->symoff
+= outsym_size
;
5282 /* Link an a.out input BFD into the output file. */
5285 aout_link_input_bfd (struct aout_final_link_info
*flaginfo
, bfd
*input_bfd
)
5287 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
5289 /* If this is a dynamic object, it may need special handling. */
5290 if ((input_bfd
->flags
& DYNAMIC
) != 0
5291 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
5292 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
5293 (flaginfo
->info
, input_bfd
));
5295 /* Get the symbols. We probably have them already, unless
5296 flaginfo->info->keep_memory is FALSE. */
5297 if (! aout_get_external_symbols (input_bfd
))
5300 /* Write out the symbols and get a map of the new indices. The map
5301 is placed into flaginfo->symbol_map. */
5302 if (! aout_link_write_symbols (flaginfo
, input_bfd
))
5305 /* Relocate and write out the sections. These functions use the
5306 symbol map created by aout_link_write_symbols. The linker_mark
5307 field will be set if these sections are to be included in the
5308 link, which will normally be the case. */
5309 if (obj_textsec (input_bfd
)->linker_mark
)
5311 if (! aout_link_input_section (flaginfo
, input_bfd
,
5312 obj_textsec (input_bfd
),
5314 exec_hdr (input_bfd
)->a_trsize
))
5317 if (obj_datasec (input_bfd
)->linker_mark
)
5319 if (! aout_link_input_section (flaginfo
, input_bfd
,
5320 obj_datasec (input_bfd
),
5322 exec_hdr (input_bfd
)->a_drsize
))
5326 /* If we are not keeping memory, we don't need the symbols any
5327 longer. We still need them if we are keeping memory, because the
5328 strings in the hash table point into them. */
5329 if (! flaginfo
->info
->keep_memory
)
5331 if (! aout_link_free_symbols (input_bfd
))
5338 /* Do the final link step. This is called on the output BFD. The
5339 INFO structure should point to a list of BFDs linked through the
5340 link.next field which can be used to find each BFD which takes part
5341 in the output. Also, each section in ABFD should point to a list
5342 of bfd_link_order structures which list all the input sections for
5343 the output section. */
5346 NAME (aout
, final_link
) (bfd
*abfd
,
5347 struct bfd_link_info
*info
,
5348 void (*callback
) (bfd
*, file_ptr
*, file_ptr
*, file_ptr
*))
5350 struct aout_final_link_info aout_info
;
5351 bfd_boolean includes_hash_initialized
= FALSE
;
5353 bfd_size_type trsize
, drsize
;
5354 bfd_size_type max_contents_size
;
5355 bfd_size_type max_relocs_size
;
5356 bfd_size_type max_sym_count
;
5357 struct bfd_link_order
*p
;
5359 bfd_boolean have_link_order_relocs
;
5361 if (bfd_link_pic (info
))
5362 abfd
->flags
|= DYNAMIC
;
5364 aout_info
.info
= info
;
5365 aout_info
.output_bfd
= abfd
;
5366 aout_info
.contents
= NULL
;
5367 aout_info
.relocs
= NULL
;
5368 aout_info
.symbol_map
= NULL
;
5369 aout_info
.output_syms
= NULL
;
5371 if (!bfd_hash_table_init_n (&aout_info
.includes
.root
,
5372 aout_link_includes_newfunc
,
5373 sizeof (struct aout_link_includes_entry
),
5376 includes_hash_initialized
= TRUE
;
5378 /* Figure out the largest section size. Also, if generating
5379 relocatable output, count the relocs. */
5382 max_contents_size
= 0;
5383 max_relocs_size
= 0;
5385 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5389 if (bfd_link_relocatable (info
))
5391 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5393 trsize
+= exec_hdr (sub
)->a_trsize
;
5394 drsize
+= exec_hdr (sub
)->a_drsize
;
5398 /* FIXME: We need to identify the .text and .data sections
5399 and call get_reloc_upper_bound and canonicalize_reloc to
5400 work out the number of relocs needed, and then multiply
5401 by the reloc size. */
5403 /* xgettext:c-format */
5404 (_("%pB: relocatable link from %s to %s not supported"),
5405 abfd
, sub
->xvec
->name
, abfd
->xvec
->name
);
5406 bfd_set_error (bfd_error_invalid_operation
);
5411 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
5413 sz
= obj_textsec (sub
)->size
;
5414 if (sz
> max_contents_size
)
5415 max_contents_size
= sz
;
5416 sz
= obj_datasec (sub
)->size
;
5417 if (sz
> max_contents_size
)
5418 max_contents_size
= sz
;
5420 sz
= exec_hdr (sub
)->a_trsize
;
5421 if (sz
> max_relocs_size
)
5422 max_relocs_size
= sz
;
5423 sz
= exec_hdr (sub
)->a_drsize
;
5424 if (sz
> max_relocs_size
)
5425 max_relocs_size
= sz
;
5427 sz
= obj_aout_external_sym_count (sub
);
5428 if (sz
> max_sym_count
)
5433 if (bfd_link_relocatable (info
))
5435 if (obj_textsec (abfd
) != NULL
)
5436 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
5437 ->map_head
.link_order
)
5438 * obj_reloc_entry_size (abfd
));
5439 if (obj_datasec (abfd
) != NULL
)
5440 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
5441 ->map_head
.link_order
)
5442 * obj_reloc_entry_size (abfd
));
5445 exec_hdr (abfd
)->a_trsize
= trsize
;
5446 exec_hdr (abfd
)->a_drsize
= drsize
;
5448 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
5450 /* Adjust the section sizes and vmas according to the magic number.
5451 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5452 filepos for each section. */
5453 if (! NAME (aout
, adjust_sizes_and_vmas
) (abfd
))
5456 /* The relocation and symbol file positions differ among a.out
5457 targets. We are passed a callback routine from the backend
5458 specific code to handle this.
5459 FIXME: At this point we do not know how much space the symbol
5460 table will require. This will not work for any (nonstandard)
5461 a.out target that needs to know the symbol table size before it
5462 can compute the relocation file positions. */
5463 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
5465 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
5466 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
5467 obj_sym_filepos (abfd
) = aout_info
.symoff
;
5469 /* We keep a count of the symbols as we output them. */
5470 obj_aout_external_sym_count (abfd
) = 0;
5472 /* We accumulate the string table as we write out the symbols. */
5473 aout_info
.strtab
= _bfd_stringtab_init ();
5474 if (aout_info
.strtab
== NULL
)
5477 /* Allocate buffers to hold section contents and relocs. */
5478 aout_info
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
5479 aout_info
.relocs
= bfd_malloc (max_relocs_size
);
5480 aout_info
.symbol_map
= (int *) bfd_malloc (max_sym_count
* sizeof (int));
5481 aout_info
.output_syms
= (struct external_nlist
*)
5482 bfd_malloc ((max_sym_count
+ 1) * sizeof (struct external_nlist
));
5483 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
5484 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
5485 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
5486 || aout_info
.output_syms
== NULL
)
5489 /* If we have a symbol named __DYNAMIC, force it out now. This is
5490 required by SunOS. Doing this here rather than in sunos.c is a
5491 hack, but it's easier than exporting everything which would be
5494 struct aout_link_hash_entry
*h
;
5496 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
5497 FALSE
, FALSE
, FALSE
);
5499 aout_link_write_other_symbol (&h
->root
.root
, &aout_info
);
5502 /* The most time efficient way to do the link would be to read all
5503 the input object files into memory and then sort out the
5504 information into the output file. Unfortunately, that will
5505 probably use too much memory. Another method would be to step
5506 through everything that composes the text section and write it
5507 out, and then everything that composes the data section and write
5508 it out, and then write out the relocs, and then write out the
5509 symbols. Unfortunately, that requires reading stuff from each
5510 input file several times, and we will not be able to keep all the
5511 input files open simultaneously, and reopening them will be slow.
5513 What we do is basically process one input file at a time. We do
5514 everything we need to do with an input file once--copy over the
5515 section contents, handle the relocation information, and write
5516 out the symbols--and then we throw away the information we read
5517 from it. This approach requires a lot of lseeks of the output
5518 file, which is unfortunate but still faster than reopening a lot
5521 We use the output_has_begun field of the input BFDs to see
5522 whether we have already handled it. */
5523 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
5524 sub
->output_has_begun
= FALSE
;
5526 /* Mark all sections which are to be included in the link. This
5527 will normally be every section. We need to do this so that we
5528 can identify any sections which the linker has decided to not
5530 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5532 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5533 if (p
->type
== bfd_indirect_link_order
)
5534 p
->u
.indirect
.section
->linker_mark
= TRUE
;
5537 have_link_order_relocs
= FALSE
;
5538 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5540 for (p
= o
->map_head
.link_order
;
5544 if (p
->type
== bfd_indirect_link_order
5545 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
5546 == bfd_target_aout_flavour
))
5550 input_bfd
= p
->u
.indirect
.section
->owner
;
5551 if (! input_bfd
->output_has_begun
)
5553 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
5555 input_bfd
->output_has_begun
= TRUE
;
5558 else if (p
->type
== bfd_section_reloc_link_order
5559 || p
->type
== bfd_symbol_reloc_link_order
)
5561 /* These are handled below. */
5562 have_link_order_relocs
= TRUE
;
5566 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
5572 /* Write out any symbols that we have not already written out. */
5573 bfd_hash_traverse (&info
->hash
->table
,
5574 aout_link_write_other_symbol
,
5577 /* Now handle any relocs we were asked to create by the linker.
5578 These did not come from any input file. We must do these after
5579 we have written out all the symbols, so that we know the symbol
5581 if (have_link_order_relocs
)
5583 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5585 for (p
= o
->map_head
.link_order
;
5589 if (p
->type
== bfd_section_reloc_link_order
5590 || p
->type
== bfd_symbol_reloc_link_order
)
5592 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
5599 if (aout_info
.contents
!= NULL
)
5601 free (aout_info
.contents
);
5602 aout_info
.contents
= NULL
;
5604 if (aout_info
.relocs
!= NULL
)
5606 free (aout_info
.relocs
);
5607 aout_info
.relocs
= NULL
;
5609 if (aout_info
.symbol_map
!= NULL
)
5611 free (aout_info
.symbol_map
);
5612 aout_info
.symbol_map
= NULL
;
5614 if (aout_info
.output_syms
!= NULL
)
5616 free (aout_info
.output_syms
);
5617 aout_info
.output_syms
= NULL
;
5619 if (includes_hash_initialized
)
5621 bfd_hash_table_free (&aout_info
.includes
.root
);
5622 includes_hash_initialized
= FALSE
;
5625 /* Finish up any dynamic linking we may be doing. */
5626 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
5628 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
5632 /* Update the header information. */
5633 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
5634 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
5635 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
5636 obj_textsec (abfd
)->reloc_count
=
5637 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
5638 obj_datasec (abfd
)->reloc_count
=
5639 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
5641 /* Write out the string table, unless there are no symbols. */
5642 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0)
5644 if (abfd
->symcount
> 0)
5646 if (!emit_stringtab (abfd
, aout_info
.strtab
))
5651 bfd_byte b
[BYTES_IN_WORD
];
5653 memset (b
, 0, BYTES_IN_WORD
);
5654 if (bfd_bwrite (b
, (bfd_size_type
) BYTES_IN_WORD
, abfd
) != BYTES_IN_WORD
)
5661 if (aout_info
.contents
!= NULL
)
5662 free (aout_info
.contents
);
5663 if (aout_info
.relocs
!= NULL
)
5664 free (aout_info
.relocs
);
5665 if (aout_info
.symbol_map
!= NULL
)
5666 free (aout_info
.symbol_map
);
5667 if (aout_info
.output_syms
!= NULL
)
5668 free (aout_info
.output_syms
);
5669 if (includes_hash_initialized
)
5670 bfd_hash_table_free (&aout_info
.includes
.root
);