1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
29 BFD supports a number of different flavours of a.out format,
30 though the major differences are only the sizes of the
31 structures on disk, and the shape of the relocation
34 The support is split into a basic support file @file{aoutx.h}
35 and other files which derive functions from the base. One
36 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
37 adds to the basic a.out functions support for sun3, sun4, 386
38 and 29k a.out files, to create a target jump vector for a
41 This information is further split out into more specific files
42 for each machine, including @file{sunos.c} for sun3 and sun4,
43 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
44 demonstration of a 64 bit a.out format.
46 The base file @file{aoutx.h} defines general mechanisms for
47 reading and writing records to and from disk and various
48 other methods which BFD requires. It is included by
49 @file{aout32.c} and @file{aout64.c} to form the names
50 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
52 As an example, this is what goes on to make the back end for a
53 sun4, from @file{aout32.c}:
55 | #define ARCH_SIZE 32
61 | aout_32_canonicalize_reloc
62 | aout_32_find_nearest_line
64 | aout_32_get_reloc_upper_bound
69 | #define TARGET_NAME "a.out-sunos-big"
70 | #define VECNAME sunos_big_vec
73 requires all the names from @file{aout32.c}, and produces the jump vector
77 The file @file{host-aout.c} is a special case. It is for a large set
78 of hosts that use ``more or less standard'' a.out files, and
79 for which cross-debugging is not interesting. It uses the
80 standard 32-bit a.out support routines, but determines the
81 file offsets and addresses of the text, data, and BSS
82 sections, the machine architecture and machine type, and the
83 entry point address, in a host-dependent manner. Once these
84 values have been determined, generic code is used to handle
87 When porting it to run on a new system, you must supply:
91 | HOST_MACHINE_ARCH (optional)
92 | HOST_MACHINE_MACHINE (optional)
93 | HOST_TEXT_START_ADDR
96 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
97 values, plus the structures and macros defined in @file{a.out.h} on
98 your host system, will produce a BFD target that will access
99 ordinary a.out files on your host. To configure a new machine
100 to use @file{host-aout.c}, specify:
102 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
103 | TDEPFILES= host-aout.o trad-core.o
105 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
107 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
108 configuration is selected.
113 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
114 Doesn't matter what the setting of WP_TEXT is on output, but it'll
116 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
117 * Any BFD with both flags clear is OMAGIC.
118 (Just want to make these explicit, so the conditions tested in this
119 file make sense if you're more familiar with a.out than with BFD.) */
121 #define KEEPIT udata.i
130 #include "aout/aout64.h"
131 #include "aout/stab_gnu.h"
134 static boolean aout_get_external_symbols
PARAMS ((bfd
*));
135 static boolean translate_from_native_sym_flags
136 PARAMS ((bfd
*, aout_symbol_type
*));
137 static boolean translate_to_native_sym_flags
138 PARAMS ((bfd
*, asymbol
*, struct external_nlist
*));
139 static void adjust_o_magic
PARAMS ((bfd
*, struct internal_exec
*));
140 static void adjust_z_magic
PARAMS ((bfd
*, struct internal_exec
*));
141 static void adjust_n_magic
PARAMS ((bfd
*, struct internal_exec
*));
148 The file @file{aoutx.h} provides for both the @emph{standard}
149 and @emph{extended} forms of a.out relocation records.
151 The standard records contain only an
152 address, a symbol index, and a type field. The extended records
153 (used on 29ks and sparcs) also have a full integer for an
157 #ifndef CTOR_TABLE_RELOC_HOWTO
158 #define CTOR_TABLE_RELOC_IDX 2
159 #define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
160 ? howto_table_ext : howto_table_std) \
161 + CTOR_TABLE_RELOC_IDX)
164 #ifndef MY_swap_std_reloc_in
165 #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
168 #ifndef MY_swap_ext_reloc_in
169 #define MY_swap_ext_reloc_in NAME(aout,swap_ext_reloc_in)
172 #ifndef MY_swap_std_reloc_out
173 #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
176 #ifndef MY_swap_ext_reloc_out
177 #define MY_swap_ext_reloc_out NAME(aout,swap_ext_reloc_out)
180 #ifndef MY_final_link_relocate
181 #define MY_final_link_relocate _bfd_final_link_relocate
184 #ifndef MY_relocate_contents
185 #define MY_relocate_contents _bfd_relocate_contents
188 #define howto_table_ext NAME(aout,ext_howto_table)
189 #define howto_table_std NAME(aout,std_howto_table)
191 reloc_howto_type howto_table_ext
[] =
193 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
194 HOWTO(RELOC_8
, 0, 0, 8, false, 0, complain_overflow_bitfield
,0,"8", false, 0,0x000000ff, false),
195 HOWTO(RELOC_16
, 0, 1, 16, false, 0, complain_overflow_bitfield
,0,"16", false, 0,0x0000ffff, false),
196 HOWTO(RELOC_32
, 0, 2, 32, false, 0, complain_overflow_bitfield
,0,"32", false, 0,0xffffffff, false),
197 HOWTO(RELOC_DISP8
, 0, 0, 8, true, 0, complain_overflow_signed
,0,"DISP8", false, 0,0x000000ff, false),
198 HOWTO(RELOC_DISP16
, 0, 1, 16, true, 0, complain_overflow_signed
,0,"DISP16", false, 0,0x0000ffff, false),
199 HOWTO(RELOC_DISP32
, 0, 2, 32, true, 0, complain_overflow_signed
,0,"DISP32", false, 0,0xffffffff, false),
200 HOWTO(RELOC_WDISP30
,2, 2, 30, true, 0, complain_overflow_signed
,0,"WDISP30", false, 0,0x3fffffff, false),
201 HOWTO(RELOC_WDISP22
,2, 2, 22, true, 0, complain_overflow_signed
,0,"WDISP22", false, 0,0x003fffff, false),
202 HOWTO(RELOC_HI22
, 10, 2, 22, false, 0, complain_overflow_bitfield
,0,"HI22", false, 0,0x003fffff, false),
203 HOWTO(RELOC_22
, 0, 2, 22, false, 0, complain_overflow_bitfield
,0,"22", false, 0,0x003fffff, false),
204 HOWTO(RELOC_13
, 0, 2, 13, false, 0, complain_overflow_bitfield
,0,"13", false, 0,0x00001fff, false),
205 HOWTO(RELOC_LO10
, 0, 2, 10, false, 0, complain_overflow_dont
,0,"LO10", false, 0,0x000003ff, false),
206 HOWTO(RELOC_SFA_BASE
,0, 2, 32, false, 0, complain_overflow_bitfield
,0,"SFA_BASE", false, 0,0xffffffff, false),
207 HOWTO(RELOC_SFA_OFF13
,0,2, 32, false, 0, complain_overflow_bitfield
,0,"SFA_OFF13",false, 0,0xffffffff, false),
208 HOWTO(RELOC_BASE10
, 0, 2, 10, false, 0, complain_overflow_dont
,0,"BASE10", false, 0,0x000003ff, false),
209 HOWTO(RELOC_BASE13
, 0, 2, 13, false, 0, complain_overflow_signed
,0,"BASE13", false, 0,0x00001fff, false),
210 HOWTO(RELOC_BASE22
, 10, 2, 22, false, 0, complain_overflow_bitfield
,0,"BASE22", false, 0,0x003fffff, false),
211 HOWTO(RELOC_PC10
, 0, 2, 10, true, 0, complain_overflow_dont
,0,"PC10", false, 0,0x000003ff, true),
212 HOWTO(RELOC_PC22
, 10, 2, 22, true, 0, complain_overflow_signed
,0,"PC22", false, 0,0x003fffff, true),
213 HOWTO(RELOC_JMP_TBL
,2, 2, 30, true, 0, complain_overflow_signed
,0,"JMP_TBL", false, 0,0x3fffffff, false),
214 HOWTO(RELOC_SEGOFF16
,0, 2, 0, false, 0, complain_overflow_bitfield
,0,"SEGOFF16", false, 0,0x00000000, false),
215 HOWTO(RELOC_GLOB_DAT
,0, 2, 0, false, 0, complain_overflow_bitfield
,0,"GLOB_DAT", false, 0,0x00000000, false),
216 HOWTO(RELOC_JMP_SLOT
,0, 2, 0, false, 0, complain_overflow_bitfield
,0,"JMP_SLOT", false, 0,0x00000000, false),
217 HOWTO(RELOC_RELATIVE
,0, 2, 0, false, 0, complain_overflow_bitfield
,0,"RELATIVE", false, 0,0x00000000, false),
218 HOWTO(0, 0, 0, 0, false, 0, complain_overflow_dont
, 0, "R_SPARC_NONE", false,0,0x00000000,true),
219 HOWTO(0, 0, 0, 0, false, 0, complain_overflow_dont
, 0, "R_SPARC_NONE", false,0,0x00000000,true),
220 #define RELOC_SPARC_REV32 RELOC_WDISP19
221 HOWTO(RELOC_SPARC_REV32
, 0, 2, 32, false, 0, complain_overflow_dont
,0,"R_SPARC_REV32", false, 0,0xffffffff, false),
224 /* Convert standard reloc records to "arelent" format (incl byte swap). */
226 reloc_howto_type howto_table_std
[] = {
227 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
228 HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield
,0,"8", true, 0x000000ff,0x000000ff, false),
229 HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield
,0,"16", true, 0x0000ffff,0x0000ffff, false),
230 HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield
,0,"32", true, 0xffffffff,0xffffffff, false),
231 HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield
,0,"64", true, 0xdeaddead,0xdeaddead, false),
232 HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed
, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
233 HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed
, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
234 HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed
, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
235 HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed
, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
236 HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield
,0,"GOT_REL", false, 0,0x00000000, false),
237 HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield
,0,"BASE16", false,0xffffffff,0xffffffff, false),
238 HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield
,0,"BASE32", false,0xffffffff,0xffffffff, false),
244 HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield
,0,"JMP_TABLE", false, 0,0x00000000, false),
260 HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield
,0,"RELATIVE", false, 0,0x00000000, false),
268 HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield
,0,"BASEREL", false, 0,0x00000000, false),
271 #define TABLE_SIZE(TABLE) (sizeof (TABLE)/sizeof (TABLE[0]))
274 NAME(aout
,reloc_type_lookup
) (abfd
,code
)
276 bfd_reloc_code_real_type code
;
278 #define EXT(i,j) case i: return &howto_table_ext[j]
279 #define STD(i,j) case i: return &howto_table_std[j]
280 int ext
= obj_reloc_entry_size (abfd
) == RELOC_EXT_SIZE
;
281 if (code
== BFD_RELOC_CTOR
)
282 switch (bfd_get_arch_info (abfd
)->bits_per_address
)
294 EXT (BFD_RELOC_8
, 0);
295 EXT (BFD_RELOC_16
, 1);
296 EXT (BFD_RELOC_32
, 2);
297 EXT (BFD_RELOC_HI22
, 8);
298 EXT (BFD_RELOC_LO10
, 11);
299 EXT (BFD_RELOC_32_PCREL_S2
, 6);
300 EXT (BFD_RELOC_SPARC_WDISP22
, 7);
301 EXT (BFD_RELOC_SPARC13
, 10);
302 EXT (BFD_RELOC_SPARC_GOT10
, 14);
303 EXT (BFD_RELOC_SPARC_BASE13
, 15);
304 EXT (BFD_RELOC_SPARC_GOT13
, 15);
305 EXT (BFD_RELOC_SPARC_GOT22
, 16);
306 EXT (BFD_RELOC_SPARC_PC10
, 17);
307 EXT (BFD_RELOC_SPARC_PC22
, 18);
308 EXT (BFD_RELOC_SPARC_WPLT30
, 19);
309 EXT (BFD_RELOC_SPARC_REV32
, 26);
310 default: return (reloc_howto_type
*) NULL
;
316 STD (BFD_RELOC_16
, 1);
317 STD (BFD_RELOC_32
, 2);
318 STD (BFD_RELOC_8_PCREL
, 4);
319 STD (BFD_RELOC_16_PCREL
, 5);
320 STD (BFD_RELOC_32_PCREL
, 6);
321 STD (BFD_RELOC_16_BASEREL
, 9);
322 STD (BFD_RELOC_32_BASEREL
, 10);
323 default: return (reloc_howto_type
*) NULL
;
329 Internal entry points
332 @file{aoutx.h} exports several routines for accessing the
333 contents of an a.out file, which are gathered and exported in
334 turn by various format specific files (eg sunos.c).
340 aout_@var{size}_swap_exec_header_in
343 void aout_@var{size}_swap_exec_header_in,
345 struct external_exec *raw_bytes,
346 struct internal_exec *execp);
349 Swap the information in an executable header @var{raw_bytes} taken
350 from a raw byte stream memory image into the internal exec header
351 structure @var{execp}.
354 #ifndef NAME_swap_exec_header_in
356 NAME(aout
,swap_exec_header_in
) (abfd
, raw_bytes
, execp
)
358 struct external_exec
*raw_bytes
;
359 struct internal_exec
*execp
;
361 struct external_exec
*bytes
= (struct external_exec
*)raw_bytes
;
363 /* The internal_exec structure has some fields that are unused in this
364 configuration (IE for i960), so ensure that all such uninitialized
365 fields are zero'd out. There are places where two of these structs
366 are memcmp'd, and thus the contents do matter. */
367 memset ((PTR
) execp
, 0, sizeof (struct internal_exec
));
368 /* Now fill in fields in the execp, from the bytes in the raw data. */
369 execp
->a_info
= bfd_h_get_32 (abfd
, bytes
->e_info
);
370 execp
->a_text
= GET_WORD (abfd
, bytes
->e_text
);
371 execp
->a_data
= GET_WORD (abfd
, bytes
->e_data
);
372 execp
->a_bss
= GET_WORD (abfd
, bytes
->e_bss
);
373 execp
->a_syms
= GET_WORD (abfd
, bytes
->e_syms
);
374 execp
->a_entry
= GET_WORD (abfd
, bytes
->e_entry
);
375 execp
->a_trsize
= GET_WORD (abfd
, bytes
->e_trsize
);
376 execp
->a_drsize
= GET_WORD (abfd
, bytes
->e_drsize
);
378 #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
383 aout_@var{size}_swap_exec_header_out
386 void aout_@var{size}_swap_exec_header_out
388 struct internal_exec *execp,
389 struct external_exec *raw_bytes);
392 Swap the information in an internal exec header structure
393 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
396 NAME(aout
,swap_exec_header_out
) (abfd
, execp
, raw_bytes
)
398 struct internal_exec
*execp
;
399 struct external_exec
*raw_bytes
;
401 struct external_exec
*bytes
= (struct external_exec
*)raw_bytes
;
403 /* Now fill in fields in the raw data, from the fields in the exec struct. */
404 bfd_h_put_32 (abfd
, execp
->a_info
, bytes
->e_info
);
405 PUT_WORD (abfd
, execp
->a_text
, bytes
->e_text
);
406 PUT_WORD (abfd
, execp
->a_data
, bytes
->e_data
);
407 PUT_WORD (abfd
, execp
->a_bss
, bytes
->e_bss
);
408 PUT_WORD (abfd
, execp
->a_syms
, bytes
->e_syms
);
409 PUT_WORD (abfd
, execp
->a_entry
, bytes
->e_entry
);
410 PUT_WORD (abfd
, execp
->a_trsize
, bytes
->e_trsize
);
411 PUT_WORD (abfd
, execp
->a_drsize
, bytes
->e_drsize
);
414 /* Make all the section for an a.out file. */
417 NAME(aout
,make_sections
) (abfd
)
420 if (obj_textsec (abfd
) == (asection
*) NULL
421 && bfd_make_section (abfd
, ".text") == (asection
*) NULL
)
423 if (obj_datasec (abfd
) == (asection
*) NULL
424 && bfd_make_section (abfd
, ".data") == (asection
*) NULL
)
426 if (obj_bsssec (abfd
) == (asection
*) NULL
427 && bfd_make_section (abfd
, ".bss") == (asection
*) NULL
)
434 aout_@var{size}_some_aout_object_p
437 const bfd_target *aout_@var{size}_some_aout_object_p
439 const bfd_target *(*callback_to_real_object_p) ());
442 Some a.out variant thinks that the file open in @var{abfd}
443 checking is an a.out file. Do some more checking, and set up
444 for access if it really is. Call back to the calling
445 environment's "finish up" function just before returning, to
446 handle any last-minute setup.
450 NAME(aout
,some_aout_object_p
) (abfd
, execp
, callback_to_real_object_p
)
452 struct internal_exec
*execp
;
453 const bfd_target
*(*callback_to_real_object_p
) PARAMS ((bfd
*));
455 struct aout_data_struct
*rawptr
, *oldrawptr
;
456 const bfd_target
*result
;
458 rawptr
= (struct aout_data_struct
*) bfd_zalloc (abfd
, sizeof (struct aout_data_struct
));
462 oldrawptr
= abfd
->tdata
.aout_data
;
463 abfd
->tdata
.aout_data
= rawptr
;
465 /* Copy the contents of the old tdata struct.
466 In particular, we want the subformat, since for hpux it was set in
467 hp300hpux.c:swap_exec_header_in and will be used in
468 hp300hpux.c:callback. */
469 if (oldrawptr
!= NULL
)
470 *abfd
->tdata
.aout_data
= *oldrawptr
;
472 abfd
->tdata
.aout_data
->a
.hdr
= &rawptr
->e
;
473 *(abfd
->tdata
.aout_data
->a
.hdr
) = *execp
; /* Copy in the internal_exec struct */
474 execp
= abfd
->tdata
.aout_data
->a
.hdr
;
476 /* Set the file flags */
477 abfd
->flags
= BFD_NO_FLAGS
;
478 if (execp
->a_drsize
|| execp
->a_trsize
)
479 abfd
->flags
|= HAS_RELOC
;
480 /* Setting of EXEC_P has been deferred to the bottom of this function */
482 abfd
->flags
|= HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
;
483 if (N_DYNAMIC(*execp
))
484 abfd
->flags
|= DYNAMIC
;
486 if (N_MAGIC (*execp
) == ZMAGIC
)
488 abfd
->flags
|= D_PAGED
| WP_TEXT
;
489 adata (abfd
).magic
= z_magic
;
491 else if (N_MAGIC (*execp
) == QMAGIC
)
493 abfd
->flags
|= D_PAGED
| WP_TEXT
;
494 adata (abfd
).magic
= z_magic
;
495 adata (abfd
).subformat
= q_magic_format
;
497 else if (N_MAGIC (*execp
) == NMAGIC
)
499 abfd
->flags
|= WP_TEXT
;
500 adata (abfd
).magic
= n_magic
;
502 else if (N_MAGIC (*execp
) == OMAGIC
503 || N_MAGIC (*execp
) == BMAGIC
)
504 adata (abfd
).magic
= o_magic
;
507 /* Should have been checked with N_BADMAG before this routine
512 bfd_get_start_address (abfd
) = execp
->a_entry
;
514 obj_aout_symbols (abfd
) = (aout_symbol_type
*)NULL
;
515 bfd_get_symcount (abfd
) = execp
->a_syms
/ sizeof (struct external_nlist
);
517 /* The default relocation entry size is that of traditional V7 Unix. */
518 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
520 /* The default symbol entry size is that of traditional Unix. */
521 obj_symbol_entry_size (abfd
) = EXTERNAL_NLIST_SIZE
;
524 bfd_init_window (&obj_aout_sym_window (abfd
));
525 bfd_init_window (&obj_aout_string_window (abfd
));
527 obj_aout_external_syms (abfd
) = NULL
;
528 obj_aout_external_strings (abfd
) = NULL
;
529 obj_aout_sym_hashes (abfd
) = NULL
;
531 if (! NAME(aout
,make_sections
) (abfd
))
534 obj_datasec (abfd
)->_raw_size
= execp
->a_data
;
535 obj_bsssec (abfd
)->_raw_size
= execp
->a_bss
;
537 obj_textsec (abfd
)->flags
=
538 (execp
->a_trsize
!= 0
539 ? (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_RELOC
)
540 : (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
));
541 obj_datasec (abfd
)->flags
=
542 (execp
->a_drsize
!= 0
543 ? (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
| SEC_RELOC
)
544 : (SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_HAS_CONTENTS
));
545 obj_bsssec (abfd
)->flags
= SEC_ALLOC
;
547 #ifdef THIS_IS_ONLY_DOCUMENTATION
548 /* The common code can't fill in these things because they depend
549 on either the start address of the text segment, the rounding
550 up of virtual addresses between segments, or the starting file
551 position of the text segment -- all of which varies among different
552 versions of a.out. */
554 /* Call back to the format-dependent code to fill in the rest of the
555 fields and do any further cleanup. Things that should be filled
556 in by the callback: */
558 struct exec
*execp
= exec_hdr (abfd
);
560 obj_textsec (abfd
)->size
= N_TXTSIZE(*execp
);
561 obj_textsec (abfd
)->raw_size
= N_TXTSIZE(*execp
);
562 /* data and bss are already filled in since they're so standard */
564 /* The virtual memory addresses of the sections */
565 obj_textsec (abfd
)->vma
= N_TXTADDR(*execp
);
566 obj_datasec (abfd
)->vma
= N_DATADDR(*execp
);
567 obj_bsssec (abfd
)->vma
= N_BSSADDR(*execp
);
569 /* The file offsets of the sections */
570 obj_textsec (abfd
)->filepos
= N_TXTOFF(*execp
);
571 obj_datasec (abfd
)->filepos
= N_DATOFF(*execp
);
573 /* The file offsets of the relocation info */
574 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF(*execp
);
575 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF(*execp
);
577 /* The file offsets of the string table and symbol table. */
578 obj_str_filepos (abfd
) = N_STROFF (*execp
);
579 obj_sym_filepos (abfd
) = N_SYMOFF (*execp
);
581 /* Determine the architecture and machine type of the object file. */
582 switch (N_MACHTYPE (*exec_hdr (abfd
))) {
584 abfd
->obj_arch
= bfd_arch_obscure
;
588 adata(abfd
)->page_size
= TARGET_PAGE_SIZE
;
589 adata(abfd
)->segment_size
= SEGMENT_SIZE
;
590 adata(abfd
)->exec_bytes_size
= EXEC_BYTES_SIZE
;
594 /* The architecture is encoded in various ways in various a.out variants,
595 or is not encoded at all in some of them. The relocation size depends
596 on the architecture and the a.out variant. Finally, the return value
597 is the bfd_target vector in use. If an error occurs, return zero and
598 set bfd_error to the appropriate error code.
600 Formats such as b.out, which have additional fields in the a.out
601 header, should cope with them in this callback as well. */
602 #endif /* DOCUMENTATION */
604 result
= (*callback_to_real_object_p
) (abfd
);
606 /* Now that the segment addresses have been worked out, take a better
607 guess at whether the file is executable. If the entry point
608 is within the text segment, assume it is. (This makes files
609 executable even if their entry point address is 0, as long as
610 their text starts at zero.).
612 This test had to be changed to deal with systems where the text segment
613 runs at a different location than the default. The problem is that the
614 entry address can appear to be outside the text segment, thus causing an
615 erroneous conclusion that the file isn't executable.
617 To fix this, we now accept any non-zero entry point as an indication of
618 executability. This will work most of the time, since only the linker
619 sets the entry point, and that is likely to be non-zero for most systems. */
621 if (execp
->a_entry
!= 0
622 || (execp
->a_entry
>= obj_textsec(abfd
)->vma
623 && execp
->a_entry
< obj_textsec(abfd
)->vma
+ obj_textsec(abfd
)->_raw_size
))
624 abfd
->flags
|= EXEC_P
;
628 struct stat stat_buf
;
630 /* The original heuristic doesn't work in some important cases.
631 The a.out file has no information about the text start
632 address. For files (like kernels) linked to non-standard
633 addresses (ld -Ttext nnn) the entry point may not be between
634 the default text start (obj_textsec(abfd)->vma) and
635 (obj_textsec(abfd)->vma) + text size. This is not just a mach
636 issue. Many kernels are loaded at non standard addresses. */
637 if (abfd
->iostream
!= NULL
638 && (abfd
->flags
& BFD_IN_MEMORY
) == 0
639 && (fstat(fileno((FILE *) (abfd
->iostream
)), &stat_buf
) == 0)
640 && ((stat_buf
.st_mode
& 0111) != 0))
641 abfd
->flags
|= EXEC_P
;
643 #endif /* STAT_FOR_EXEC */
647 #if 0 /* These should be set correctly anyways. */
648 abfd
->sections
= obj_textsec (abfd
);
649 obj_textsec (abfd
)->next
= obj_datasec (abfd
);
650 obj_datasec (abfd
)->next
= obj_bsssec (abfd
);
656 abfd
->tdata
.aout_data
= oldrawptr
;
663 aout_@var{size}_mkobject
666 boolean aout_@var{size}_mkobject, (bfd *abfd);
669 Initialize BFD @var{abfd} for use with a.out files.
673 NAME(aout
,mkobject
) (abfd
)
676 struct aout_data_struct
*rawptr
;
678 bfd_set_error (bfd_error_system_call
);
680 /* Use an intermediate variable for clarity */
681 rawptr
= (struct aout_data_struct
*)bfd_zalloc (abfd
, sizeof (struct aout_data_struct
));
686 abfd
->tdata
.aout_data
= rawptr
;
687 exec_hdr (abfd
) = &(rawptr
->e
);
689 obj_textsec (abfd
) = (asection
*)NULL
;
690 obj_datasec (abfd
) = (asection
*)NULL
;
691 obj_bsssec (abfd
) = (asection
*)NULL
;
698 aout_@var{size}_machine_type
701 enum machine_type aout_@var{size}_machine_type
702 (enum bfd_architecture arch,
703 unsigned long machine));
706 Keep track of machine architecture and machine type for
707 a.out's. Return the <<machine_type>> for a particular
708 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
709 and machine can't be represented in a.out format.
711 If the architecture is understood, machine type 0 (default)
712 is always understood.
716 NAME(aout
,machine_type
) (arch
, machine
, unknown
)
717 enum bfd_architecture arch
;
718 unsigned long machine
;
721 enum machine_type arch_flags
;
723 arch_flags
= M_UNKNOWN
;
729 || machine
== bfd_mach_sparc
730 || machine
== bfd_mach_sparc_sparclite
731 || machine
== bfd_mach_sparc_sparclite_le
732 || machine
== bfd_mach_sparc_v9
)
733 arch_flags
= M_SPARC
;
734 else if (machine
== bfd_mach_sparc_sparclet
)
735 arch_flags
= M_SPARCLET
;
740 case 0: arch_flags
= M_68010
; break;
741 case bfd_mach_m68000
: arch_flags
= M_UNKNOWN
; *unknown
= false; break;
742 case bfd_mach_m68010
: arch_flags
= M_68010
; break;
743 case bfd_mach_m68020
: arch_flags
= M_68020
; break;
744 default: arch_flags
= M_UNKNOWN
; break;
749 if (machine
== 0) arch_flags
= M_386
;
753 if (machine
== 0) arch_flags
= M_29K
;
757 if (machine
== 0) arch_flags
= M_ARM
;
763 case bfd_mach_mips3000
:
764 case bfd_mach_mips3900
:
765 arch_flags
= M_MIPS1
;
767 case bfd_mach_mips6000
:
768 arch_flags
= M_MIPS2
;
770 case bfd_mach_mips4000
:
771 case bfd_mach_mips4010
:
772 case bfd_mach_mips4100
:
773 case bfd_mach_mips4300
:
774 case bfd_mach_mips4400
:
775 case bfd_mach_mips4600
:
776 case bfd_mach_mips4650
:
777 case bfd_mach_mips8000
:
778 case bfd_mach_mips10000
:
779 case bfd_mach_mips12000
:
780 case bfd_mach_mips16
:
781 case bfd_mach_mips32
:
782 case bfd_mach_mips32_4k
:
784 case bfd_mach_mips64
:
785 case bfd_mach_mips_sb1
:
786 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
787 arch_flags
= M_MIPS2
;
790 arch_flags
= M_UNKNOWN
;
797 case 0: arch_flags
= M_NS32532
; break;
798 case 32032: arch_flags
= M_NS32032
; break;
799 case 32532: arch_flags
= M_NS32532
; break;
800 default: arch_flags
= M_UNKNOWN
; break;
809 if (machine
== 0 || machine
== 255) arch_flags
= M_CRIS
;
813 arch_flags
= M_UNKNOWN
;
816 if (arch_flags
!= M_UNKNOWN
)
824 aout_@var{size}_set_arch_mach
827 boolean aout_@var{size}_set_arch_mach,
829 enum bfd_architecture arch,
830 unsigned long machine));
833 Set the architecture and the machine of the BFD @var{abfd} to the
834 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
835 can support the architecture required.
839 NAME(aout
,set_arch_mach
) (abfd
, arch
, machine
)
841 enum bfd_architecture arch
;
842 unsigned long machine
;
844 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
847 if (arch
!= bfd_arch_unknown
)
851 NAME(aout
,machine_type
) (arch
, machine
, &unknown
);
856 /* Determine the size of a relocation entry */
861 obj_reloc_entry_size (abfd
) = RELOC_EXT_SIZE
;
864 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
868 return (*aout_backend_info(abfd
)->set_sizes
) (abfd
);
872 adjust_o_magic (abfd
, execp
)
874 struct internal_exec
*execp
;
876 file_ptr pos
= adata (abfd
).exec_bytes_size
;
881 obj_textsec(abfd
)->filepos
= pos
;
882 if (!obj_textsec(abfd
)->user_set_vma
)
883 obj_textsec(abfd
)->vma
= vma
;
885 vma
= obj_textsec(abfd
)->vma
;
887 pos
+= obj_textsec(abfd
)->_raw_size
;
888 vma
+= obj_textsec(abfd
)->_raw_size
;
891 if (!obj_datasec(abfd
)->user_set_vma
)
893 #if 0 /* ?? Does alignment in the file image really matter? */
894 pad
= align_power (vma
, obj_datasec(abfd
)->alignment_power
) - vma
;
896 obj_textsec(abfd
)->_raw_size
+= pad
;
899 obj_datasec(abfd
)->vma
= vma
;
902 vma
= obj_datasec(abfd
)->vma
;
903 obj_datasec(abfd
)->filepos
= pos
;
904 pos
+= obj_datasec(abfd
)->_raw_size
;
905 vma
+= obj_datasec(abfd
)->_raw_size
;
908 if (!obj_bsssec(abfd
)->user_set_vma
)
911 pad
= align_power (vma
, obj_bsssec(abfd
)->alignment_power
) - vma
;
913 obj_datasec(abfd
)->_raw_size
+= pad
;
916 obj_bsssec(abfd
)->vma
= vma
;
920 /* The VMA of the .bss section is set by the the VMA of the
921 .data section plus the size of the .data section. We may
922 need to add padding bytes to make this true. */
923 pad
= obj_bsssec (abfd
)->vma
- vma
;
926 obj_datasec (abfd
)->_raw_size
+= pad
;
930 obj_bsssec(abfd
)->filepos
= pos
;
932 /* Fix up the exec header. */
933 execp
->a_text
= obj_textsec(abfd
)->_raw_size
;
934 execp
->a_data
= obj_datasec(abfd
)->_raw_size
;
935 execp
->a_bss
= obj_bsssec(abfd
)->_raw_size
;
936 N_SET_MAGIC (*execp
, OMAGIC
);
940 adjust_z_magic (abfd
, execp
)
942 struct internal_exec
*execp
;
944 bfd_size_type data_pad
, text_pad
;
946 CONST
struct aout_backend_data
*abdp
;
947 int ztih
; /* Nonzero if text includes exec header. */
949 abdp
= aout_backend_info (abfd
);
953 && (abdp
->text_includes_header
954 || obj_aout_subformat (abfd
) == q_magic_format
));
955 obj_textsec(abfd
)->filepos
= (ztih
956 ? adata(abfd
).exec_bytes_size
957 : adata(abfd
).zmagic_disk_block_size
);
958 if (! obj_textsec(abfd
)->user_set_vma
)
960 /* ?? Do we really need to check for relocs here? */
961 obj_textsec(abfd
)->vma
= ((abfd
->flags
& HAS_RELOC
)
964 ? (abdp
->default_text_vma
965 + adata(abfd
).exec_bytes_size
)
966 : abdp
->default_text_vma
));
971 /* The .text section is being loaded at an unusual address. We
972 may need to pad it such that the .data section starts at a page
975 text_pad
= ((obj_textsec (abfd
)->filepos
- obj_textsec (abfd
)->vma
)
976 & (adata (abfd
).page_size
- 1));
978 text_pad
= ((- obj_textsec (abfd
)->vma
)
979 & (adata (abfd
).page_size
- 1));
982 /* Find start of data. */
985 text_end
= obj_textsec (abfd
)->filepos
+ obj_textsec (abfd
)->_raw_size
;
986 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
990 /* Note that if page_size == zmagic_disk_block_size, then
991 filepos == page_size, and this case is the same as the ztih
993 text_end
= obj_textsec (abfd
)->_raw_size
;
994 text_pad
+= BFD_ALIGN (text_end
, adata (abfd
).page_size
) - text_end
;
995 text_end
+= obj_textsec (abfd
)->filepos
;
997 obj_textsec(abfd
)->_raw_size
+= text_pad
;
998 text_end
+= text_pad
;
1001 if (!obj_datasec(abfd
)->user_set_vma
)
1004 vma
= obj_textsec(abfd
)->vma
+ obj_textsec(abfd
)->_raw_size
;
1005 obj_datasec(abfd
)->vma
= BFD_ALIGN (vma
, adata(abfd
).segment_size
);
1007 if (abdp
&& abdp
->zmagic_mapped_contiguous
)
1009 asection
* text
= obj_textsec (abfd
);
1010 asection
* data
= obj_datasec (abfd
);
1012 text_pad
= data
->vma
- (text
->vma
+ text
->_raw_size
);
1013 /* Only pad the text section if the data
1014 section is going to be placed after it. */
1016 text
->_raw_size
+= text_pad
;
1018 obj_datasec(abfd
)->filepos
= (obj_textsec(abfd
)->filepos
1019 + obj_textsec(abfd
)->_raw_size
);
1021 /* Fix up exec header while we're at it. */
1022 execp
->a_text
= obj_textsec(abfd
)->_raw_size
;
1023 if (ztih
&& (!abdp
|| (abdp
&& !abdp
->exec_header_not_counted
)))
1024 execp
->a_text
+= adata(abfd
).exec_bytes_size
;
1025 if (obj_aout_subformat (abfd
) == q_magic_format
)
1026 N_SET_MAGIC (*execp
, QMAGIC
);
1028 N_SET_MAGIC (*execp
, ZMAGIC
);
1030 /* Spec says data section should be rounded up to page boundary. */
1031 obj_datasec(abfd
)->_raw_size
1032 = align_power (obj_datasec(abfd
)->_raw_size
,
1033 obj_bsssec(abfd
)->alignment_power
);
1034 execp
->a_data
= BFD_ALIGN (obj_datasec(abfd
)->_raw_size
,
1035 adata(abfd
).page_size
);
1036 data_pad
= execp
->a_data
- obj_datasec(abfd
)->_raw_size
;
1039 if (!obj_bsssec(abfd
)->user_set_vma
)
1040 obj_bsssec(abfd
)->vma
= (obj_datasec(abfd
)->vma
1041 + obj_datasec(abfd
)->_raw_size
);
1042 /* If the BSS immediately follows the data section and extra space
1043 in the page is left after the data section, fudge data
1044 in the header so that the bss section looks smaller by that
1045 amount. We'll start the bss section there, and lie to the OS.
1046 (Note that a linker script, as well as the above assignment,
1047 could have explicitly set the BSS vma to immediately follow
1048 the data section.) */
1049 if (align_power (obj_bsssec(abfd
)->vma
, obj_bsssec(abfd
)->alignment_power
)
1050 == obj_datasec(abfd
)->vma
+ obj_datasec(abfd
)->_raw_size
)
1051 execp
->a_bss
= (data_pad
> obj_bsssec(abfd
)->_raw_size
) ? 0 :
1052 obj_bsssec(abfd
)->_raw_size
- data_pad
;
1054 execp
->a_bss
= obj_bsssec(abfd
)->_raw_size
;
1058 adjust_n_magic (abfd
, execp
)
1060 struct internal_exec
*execp
;
1062 file_ptr pos
= adata(abfd
).exec_bytes_size
;
1067 obj_textsec(abfd
)->filepos
= pos
;
1068 if (!obj_textsec(abfd
)->user_set_vma
)
1069 obj_textsec(abfd
)->vma
= vma
;
1071 vma
= obj_textsec(abfd
)->vma
;
1072 pos
+= obj_textsec(abfd
)->_raw_size
;
1073 vma
+= obj_textsec(abfd
)->_raw_size
;
1076 obj_datasec(abfd
)->filepos
= pos
;
1077 if (!obj_datasec(abfd
)->user_set_vma
)
1078 obj_datasec(abfd
)->vma
= BFD_ALIGN (vma
, adata(abfd
).segment_size
);
1079 vma
= obj_datasec(abfd
)->vma
;
1081 /* Since BSS follows data immediately, see if it needs alignment. */
1082 vma
+= obj_datasec(abfd
)->_raw_size
;
1083 pad
= align_power (vma
, obj_bsssec(abfd
)->alignment_power
) - vma
;
1084 obj_datasec(abfd
)->_raw_size
+= pad
;
1085 pos
+= obj_datasec(abfd
)->_raw_size
;
1088 if (!obj_bsssec(abfd
)->user_set_vma
)
1089 obj_bsssec(abfd
)->vma
= vma
;
1091 vma
= obj_bsssec(abfd
)->vma
;
1093 /* Fix up exec header. */
1094 execp
->a_text
= obj_textsec(abfd
)->_raw_size
;
1095 execp
->a_data
= obj_datasec(abfd
)->_raw_size
;
1096 execp
->a_bss
= obj_bsssec(abfd
)->_raw_size
;
1097 N_SET_MAGIC (*execp
, NMAGIC
);
1101 NAME(aout
,adjust_sizes_and_vmas
) (abfd
, text_size
, text_end
)
1103 bfd_size_type
*text_size
;
1104 file_ptr
*text_end ATTRIBUTE_UNUSED
;
1106 struct internal_exec
*execp
= exec_hdr (abfd
);
1108 if (! NAME(aout
,make_sections
) (abfd
))
1111 if (adata(abfd
).magic
!= undecided_magic
)
1114 obj_textsec(abfd
)->_raw_size
=
1115 align_power(obj_textsec(abfd
)->_raw_size
,
1116 obj_textsec(abfd
)->alignment_power
);
1118 *text_size
= obj_textsec (abfd
)->_raw_size
;
1119 /* Rule (heuristic) for when to pad to a new page. Note that there
1120 are (at least) two ways demand-paged (ZMAGIC) files have been
1121 handled. Most Berkeley-based systems start the text segment at
1122 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1123 segment right after the exec header; the latter is counted in the
1124 text segment size, and is paged in by the kernel with the rest of
1127 /* This perhaps isn't the right way to do this, but made it simpler for me
1128 to understand enough to implement it. Better would probably be to go
1129 right from BFD flags to alignment/positioning characteristics. But the
1130 old code was sloppy enough about handling the flags, and had enough
1131 other magic, that it was a little hard for me to understand. I think
1132 I understand it better now, but I haven't time to do the cleanup this
1135 if (abfd
->flags
& D_PAGED
)
1136 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1137 adata(abfd
).magic
= z_magic
;
1138 else if (abfd
->flags
& WP_TEXT
)
1139 adata(abfd
).magic
= n_magic
;
1141 adata(abfd
).magic
= o_magic
;
1143 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1145 fprintf (stderr
, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1147 switch (adata(abfd
).magic
) {
1148 case n_magic
: str
= "NMAGIC"; break;
1149 case o_magic
: str
= "OMAGIC"; break;
1150 case z_magic
: str
= "ZMAGIC"; break;
1155 obj_textsec(abfd
)->vma
, obj_textsec(abfd
)->_raw_size
,
1156 obj_textsec(abfd
)->alignment_power
,
1157 obj_datasec(abfd
)->vma
, obj_datasec(abfd
)->_raw_size
,
1158 obj_datasec(abfd
)->alignment_power
,
1159 obj_bsssec(abfd
)->vma
, obj_bsssec(abfd
)->_raw_size
,
1160 obj_bsssec(abfd
)->alignment_power
);
1164 switch (adata(abfd
).magic
)
1167 adjust_o_magic (abfd
, execp
);
1170 adjust_z_magic (abfd
, execp
);
1173 adjust_n_magic (abfd
, execp
);
1179 #ifdef BFD_AOUT_DEBUG
1180 fprintf (stderr
, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1181 obj_textsec(abfd
)->vma
, obj_textsec(abfd
)->_raw_size
,
1182 obj_textsec(abfd
)->filepos
,
1183 obj_datasec(abfd
)->vma
, obj_datasec(abfd
)->_raw_size
,
1184 obj_datasec(abfd
)->filepos
,
1185 obj_bsssec(abfd
)->vma
, obj_bsssec(abfd
)->_raw_size
);
1193 aout_@var{size}_new_section_hook
1196 boolean aout_@var{size}_new_section_hook,
1198 asection *newsect));
1201 Called by the BFD in response to a @code{bfd_make_section}
1205 NAME(aout
,new_section_hook
) (abfd
, newsect
)
1209 /* align to double at least */
1210 newsect
->alignment_power
= bfd_get_arch_info(abfd
)->section_align_power
;
1212 if (bfd_get_format (abfd
) == bfd_object
)
1214 if (obj_textsec(abfd
) == NULL
&& !strcmp(newsect
->name
, ".text")) {
1215 obj_textsec(abfd
)= newsect
;
1216 newsect
->target_index
= N_TEXT
;
1220 if (obj_datasec(abfd
) == NULL
&& !strcmp(newsect
->name
, ".data")) {
1221 obj_datasec(abfd
) = newsect
;
1222 newsect
->target_index
= N_DATA
;
1226 if (obj_bsssec(abfd
) == NULL
&& !strcmp(newsect
->name
, ".bss")) {
1227 obj_bsssec(abfd
) = newsect
;
1228 newsect
->target_index
= N_BSS
;
1234 /* We allow more than three sections internally */
1239 NAME(aout
,set_section_contents
) (abfd
, section
, location
, offset
, count
)
1244 bfd_size_type count
;
1247 bfd_size_type text_size
;
1249 if (! abfd
->output_has_begun
)
1251 if (! NAME(aout
,adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
1255 if (section
== obj_bsssec (abfd
))
1257 bfd_set_error (bfd_error_no_contents
);
1261 if (section
!= obj_textsec (abfd
)
1262 && section
!= obj_datasec (abfd
))
1264 (*_bfd_error_handler
)
1265 (_("%s: can not represent section `%s' in a.out object file format"),
1266 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, section
));
1267 bfd_set_error (bfd_error_nonrepresentable_section
);
1273 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0
1274 || bfd_write (location
, 1, count
, abfd
) != count
)
1281 /* Read the external symbols from an a.out file. */
1284 aout_get_external_symbols (abfd
)
1287 if (obj_aout_external_syms (abfd
) == (struct external_nlist
*) NULL
)
1289 bfd_size_type count
;
1290 struct external_nlist
*syms
;
1292 count
= exec_hdr (abfd
)->a_syms
/ EXTERNAL_NLIST_SIZE
;
1295 if (bfd_get_file_window (abfd
,
1296 obj_sym_filepos (abfd
), exec_hdr (abfd
)->a_syms
,
1297 &obj_aout_sym_window (abfd
), true) == false)
1299 syms
= (struct external_nlist
*) obj_aout_sym_window (abfd
).data
;
1301 /* We allocate using malloc to make the values easy to free
1302 later on. If we put them on the objalloc it might not be
1303 possible to free them. */
1304 syms
= ((struct external_nlist
*)
1305 bfd_malloc ((size_t) count
* EXTERNAL_NLIST_SIZE
));
1306 if (syms
== (struct external_nlist
*) NULL
&& count
!= 0)
1309 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1310 || (bfd_read (syms
, 1, exec_hdr (abfd
)->a_syms
, abfd
)
1311 != exec_hdr (abfd
)->a_syms
))
1318 obj_aout_external_syms (abfd
) = syms
;
1319 obj_aout_external_sym_count (abfd
) = count
;
1322 if (obj_aout_external_strings (abfd
) == NULL
1323 && exec_hdr (abfd
)->a_syms
!= 0)
1325 unsigned char string_chars
[BYTES_IN_WORD
];
1326 bfd_size_type stringsize
;
1329 /* Get the size of the strings. */
1330 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
1331 || (bfd_read ((PTR
) string_chars
, BYTES_IN_WORD
, 1, abfd
)
1334 stringsize
= GET_WORD (abfd
, string_chars
);
1337 if (bfd_get_file_window (abfd
, obj_str_filepos (abfd
), stringsize
,
1338 &obj_aout_string_window (abfd
), true) == false)
1340 strings
= (char *) obj_aout_string_window (abfd
).data
;
1342 strings
= (char *) bfd_malloc ((size_t) stringsize
+ 1);
1343 if (strings
== NULL
)
1346 /* Skip space for the string count in the buffer for convenience
1347 when using indexes. */
1348 if (bfd_read (strings
+ BYTES_IN_WORD
, 1, stringsize
- BYTES_IN_WORD
,
1350 != stringsize
- BYTES_IN_WORD
)
1357 /* Ensure that a zero index yields an empty string. */
1360 strings
[stringsize
- 1] = 0;
1362 obj_aout_external_strings (abfd
) = strings
;
1363 obj_aout_external_string_size (abfd
) = stringsize
;
1369 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1370 and symbol->value fields of CACHE_PTR will be set from the a.out
1371 nlist structure. This function is responsible for setting
1372 symbol->flags and symbol->section, and adjusting symbol->value. */
1375 translate_from_native_sym_flags (abfd
, cache_ptr
)
1377 aout_symbol_type
*cache_ptr
;
1381 if ((cache_ptr
->type
& N_STAB
) != 0
1382 || cache_ptr
->type
== N_FN
)
1386 /* This is a debugging symbol. */
1388 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
;
1390 /* Work out the symbol section. */
1391 switch (cache_ptr
->type
& N_TYPE
)
1395 sec
= obj_textsec (abfd
);
1398 sec
= obj_datasec (abfd
);
1401 sec
= obj_bsssec (abfd
);
1405 sec
= bfd_abs_section_ptr
;
1409 cache_ptr
->symbol
.section
= sec
;
1410 cache_ptr
->symbol
.value
-= sec
->vma
;
1415 /* Get the default visibility. This does not apply to all types, so
1416 we just hold it in a local variable to use if wanted. */
1417 if ((cache_ptr
->type
& N_EXT
) == 0)
1418 visible
= BSF_LOCAL
;
1420 visible
= BSF_GLOBAL
;
1422 switch (cache_ptr
->type
)
1425 case N_ABS
: case N_ABS
| N_EXT
:
1426 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1427 cache_ptr
->symbol
.flags
= visible
;
1430 case N_UNDF
| N_EXT
:
1431 if (cache_ptr
->symbol
.value
!= 0)
1433 /* This is a common symbol. */
1434 cache_ptr
->symbol
.flags
= BSF_GLOBAL
;
1435 cache_ptr
->symbol
.section
= bfd_com_section_ptr
;
1439 cache_ptr
->symbol
.flags
= 0;
1440 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1444 case N_TEXT
: case N_TEXT
| N_EXT
:
1445 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1446 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1447 cache_ptr
->symbol
.flags
= visible
;
1450 /* N_SETV symbols used to represent set vectors placed in the
1451 data section. They are no longer generated. Theoretically,
1452 it was possible to extract the entries and combine them with
1453 new ones, although I don't know if that was ever actually
1454 done. Unless that feature is restored, treat them as data
1456 case N_SETV
: case N_SETV
| N_EXT
:
1457 case N_DATA
: case N_DATA
| N_EXT
:
1458 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1459 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1460 cache_ptr
->symbol
.flags
= visible
;
1463 case N_BSS
: case N_BSS
| N_EXT
:
1464 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1465 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1466 cache_ptr
->symbol
.flags
= visible
;
1469 case N_SETA
: case N_SETA
| N_EXT
:
1470 case N_SETT
: case N_SETT
| N_EXT
:
1471 case N_SETD
: case N_SETD
| N_EXT
:
1472 case N_SETB
: case N_SETB
| N_EXT
:
1474 /* This code is no longer needed. It used to be used to make
1475 the linker handle set symbols, but they are now handled in
1476 the add_symbols routine instead. */
1479 arelent_chain
*reloc
;
1480 asection
*into_section
;
1482 /* This is a set symbol. The name of the symbol is the name
1483 of the set (e.g., __CTOR_LIST__). The value of the symbol
1484 is the value to add to the set. We create a section with
1485 the same name as the symbol, and add a reloc to insert the
1486 appropriate value into the section.
1488 This action is actually obsolete; it used to make the
1489 linker do the right thing, but the linker no longer uses
1492 section
= bfd_get_section_by_name (abfd
, cache_ptr
->symbol
.name
);
1493 if (section
== NULL
)
1497 copy
= bfd_alloc (abfd
, strlen (cache_ptr
->symbol
.name
) + 1);
1501 strcpy (copy
, cache_ptr
->symbol
.name
);
1502 section
= bfd_make_section (abfd
, copy
);
1503 if (section
== NULL
)
1507 reloc
= (arelent_chain
*) bfd_alloc (abfd
, sizeof (arelent_chain
));
1511 /* Build a relocation entry for the constructor. */
1512 switch (cache_ptr
->type
& N_TYPE
)
1515 into_section
= bfd_abs_section_ptr
;
1516 cache_ptr
->type
= N_ABS
;
1519 into_section
= obj_textsec (abfd
);
1520 cache_ptr
->type
= N_TEXT
;
1523 into_section
= obj_datasec (abfd
);
1524 cache_ptr
->type
= N_DATA
;
1527 into_section
= obj_bsssec (abfd
);
1528 cache_ptr
->type
= N_BSS
;
1532 /* Build a relocation pointing into the constructor section
1533 pointing at the symbol in the set vector specified. */
1534 reloc
->relent
.addend
= cache_ptr
->symbol
.value
;
1535 cache_ptr
->symbol
.section
= into_section
;
1536 reloc
->relent
.sym_ptr_ptr
= into_section
->symbol_ptr_ptr
;
1538 /* We modify the symbol to belong to a section depending upon
1539 the name of the symbol, and add to the size of the section
1540 to contain a pointer to the symbol. Build a reloc entry to
1541 relocate to this symbol attached to this section. */
1542 section
->flags
= SEC_CONSTRUCTOR
| SEC_RELOC
;
1544 section
->reloc_count
++;
1545 section
->alignment_power
= 2;
1547 reloc
->next
= section
->constructor_chain
;
1548 section
->constructor_chain
= reloc
;
1549 reloc
->relent
.address
= section
->_raw_size
;
1550 section
->_raw_size
+= BYTES_IN_WORD
;
1552 reloc
->relent
.howto
= CTOR_TABLE_RELOC_HOWTO(abfd
);
1556 switch (cache_ptr
->type
& N_TYPE
)
1559 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1562 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1565 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1568 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1572 cache_ptr
->symbol
.flags
|= BSF_CONSTRUCTOR
;
1577 /* This symbol is the text of a warning message. The next
1578 symbol is the symbol to associate the warning with. If a
1579 reference is made to that symbol, a warning is issued. */
1580 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_WARNING
;
1581 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1584 case N_INDR
: case N_INDR
| N_EXT
:
1585 /* An indirect symbol. This consists of two symbols in a row.
1586 The first symbol is the name of the indirection. The second
1587 symbol is the name of the target. A reference to the first
1588 symbol becomes a reference to the second. */
1589 cache_ptr
->symbol
.flags
= BSF_DEBUGGING
| BSF_INDIRECT
| visible
;
1590 cache_ptr
->symbol
.section
= bfd_ind_section_ptr
;
1594 cache_ptr
->symbol
.section
= bfd_und_section_ptr
;
1595 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1599 cache_ptr
->symbol
.section
= bfd_abs_section_ptr
;
1600 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1604 cache_ptr
->symbol
.section
= obj_textsec (abfd
);
1605 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1606 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1610 cache_ptr
->symbol
.section
= obj_datasec (abfd
);
1611 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1612 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1616 cache_ptr
->symbol
.section
= obj_bsssec (abfd
);
1617 cache_ptr
->symbol
.value
-= cache_ptr
->symbol
.section
->vma
;
1618 cache_ptr
->symbol
.flags
= BSF_WEAK
;
1625 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1628 translate_to_native_sym_flags (abfd
, cache_ptr
, sym_pointer
)
1631 struct external_nlist
*sym_pointer
;
1633 bfd_vma value
= cache_ptr
->value
;
1637 /* Mask out any existing type bits in case copying from one section
1639 sym_pointer
->e_type
[0] &= ~N_TYPE
;
1641 sec
= bfd_get_section (cache_ptr
);
1646 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1648 (*_bfd_error_handler
)
1649 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
1650 bfd_get_filename (abfd
),
1651 cache_ptr
->name
!= NULL
? cache_ptr
->name
: _("*unknown*"));
1652 bfd_set_error (bfd_error_nonrepresentable_section
);
1656 if (sec
->output_section
!= NULL
)
1658 off
= sec
->output_offset
;
1659 sec
= sec
->output_section
;
1662 if (bfd_is_abs_section (sec
))
1663 sym_pointer
->e_type
[0] |= N_ABS
;
1664 else if (sec
== obj_textsec (abfd
))
1665 sym_pointer
->e_type
[0] |= N_TEXT
;
1666 else if (sec
== obj_datasec (abfd
))
1667 sym_pointer
->e_type
[0] |= N_DATA
;
1668 else if (sec
== obj_bsssec (abfd
))
1669 sym_pointer
->e_type
[0] |= N_BSS
;
1670 else if (bfd_is_und_section (sec
))
1671 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1672 else if (bfd_is_ind_section (sec
))
1673 sym_pointer
->e_type
[0] = N_INDR
;
1674 else if (bfd_is_com_section (sec
))
1675 sym_pointer
->e_type
[0] = N_UNDF
| N_EXT
;
1678 (*_bfd_error_handler
)
1679 (_("%s: can not represent section `%s' in a.out object file format"),
1680 bfd_get_filename (abfd
), bfd_get_section_name (abfd
, sec
));
1681 bfd_set_error (bfd_error_nonrepresentable_section
);
1685 /* Turn the symbol from section relative to absolute again */
1686 value
+= sec
->vma
+ off
;
1688 if ((cache_ptr
->flags
& BSF_WARNING
) != 0)
1689 sym_pointer
->e_type
[0] = N_WARNING
;
1691 if ((cache_ptr
->flags
& BSF_DEBUGGING
) != 0)
1692 sym_pointer
->e_type
[0] = ((aout_symbol_type
*) cache_ptr
)->type
;
1693 else if ((cache_ptr
->flags
& BSF_GLOBAL
) != 0)
1694 sym_pointer
->e_type
[0] |= N_EXT
;
1695 else if ((cache_ptr
->flags
& BSF_LOCAL
) != 0)
1696 sym_pointer
->e_type
[0] &= ~N_EXT
;
1698 if ((cache_ptr
->flags
& BSF_CONSTRUCTOR
) != 0)
1700 int type
= ((aout_symbol_type
*) cache_ptr
)->type
;
1703 case N_ABS
: type
= N_SETA
; break;
1704 case N_TEXT
: type
= N_SETT
; break;
1705 case N_DATA
: type
= N_SETD
; break;
1706 case N_BSS
: type
= N_SETB
; break;
1708 sym_pointer
->e_type
[0] = type
;
1711 if ((cache_ptr
->flags
& BSF_WEAK
) != 0)
1715 switch (sym_pointer
->e_type
[0] & N_TYPE
)
1718 case N_ABS
: type
= N_WEAKA
; break;
1719 case N_TEXT
: type
= N_WEAKT
; break;
1720 case N_DATA
: type
= N_WEAKD
; break;
1721 case N_BSS
: type
= N_WEAKB
; break;
1722 case N_UNDF
: type
= N_WEAKU
; break;
1724 sym_pointer
->e_type
[0] = type
;
1727 PUT_WORD(abfd
, value
, sym_pointer
->e_value
);
1732 /* Native-level interface to symbols. */
1735 NAME(aout
,make_empty_symbol
) (abfd
)
1738 aout_symbol_type
*new =
1739 (aout_symbol_type
*)bfd_zalloc (abfd
, sizeof (aout_symbol_type
));
1742 new->symbol
.the_bfd
= abfd
;
1744 return &new->symbol
;
1747 /* Translate a set of internal symbols into external symbols. */
1750 NAME(aout
,translate_symbol_table
) (abfd
, in
, ext
, count
, str
, strsize
, dynamic
)
1752 aout_symbol_type
*in
;
1753 struct external_nlist
*ext
;
1754 bfd_size_type count
;
1756 bfd_size_type strsize
;
1759 struct external_nlist
*ext_end
;
1761 ext_end
= ext
+ count
;
1762 for (; ext
< ext_end
; ext
++, in
++)
1766 x
= GET_WORD (abfd
, ext
->e_strx
);
1767 in
->symbol
.the_bfd
= abfd
;
1769 /* For the normal symbols, the zero index points at the number
1770 of bytes in the string table but is to be interpreted as the
1771 null string. For the dynamic symbols, the number of bytes in
1772 the string table is stored in the __DYNAMIC structure and the
1773 zero index points at an actual string. */
1774 if (x
== 0 && ! dynamic
)
1775 in
->symbol
.name
= "";
1776 else if (x
< strsize
)
1777 in
->symbol
.name
= str
+ x
;
1781 in
->symbol
.value
= GET_SWORD (abfd
, ext
->e_value
);
1782 in
->desc
= bfd_h_get_16 (abfd
, ext
->e_desc
);
1783 in
->other
= bfd_h_get_8 (abfd
, ext
->e_other
);
1784 in
->type
= bfd_h_get_8 (abfd
, ext
->e_type
);
1785 in
->symbol
.udata
.p
= NULL
;
1787 if (! translate_from_native_sym_flags (abfd
, in
))
1791 in
->symbol
.flags
|= BSF_DYNAMIC
;
1797 /* We read the symbols into a buffer, which is discarded when this
1798 function exits. We read the strings into a buffer large enough to
1799 hold them all plus all the cached symbol entries. */
1802 NAME(aout
,slurp_symbol_table
) (abfd
)
1805 struct external_nlist
*old_external_syms
;
1806 aout_symbol_type
*cached
;
1809 /* If there's no work to be done, don't do any */
1810 if (obj_aout_symbols (abfd
) != (aout_symbol_type
*) NULL
)
1813 old_external_syms
= obj_aout_external_syms (abfd
);
1815 if (! aout_get_external_symbols (abfd
))
1818 cached_size
= (obj_aout_external_sym_count (abfd
)
1819 * sizeof (aout_symbol_type
));
1820 cached
= (aout_symbol_type
*) bfd_malloc (cached_size
);
1821 if (cached
== NULL
&& cached_size
!= 0)
1823 if (cached_size
!= 0)
1824 memset (cached
, 0, cached_size
);
1826 /* Convert from external symbol information to internal. */
1827 if (! (NAME(aout
,translate_symbol_table
)
1829 obj_aout_external_syms (abfd
),
1830 obj_aout_external_sym_count (abfd
),
1831 obj_aout_external_strings (abfd
),
1832 obj_aout_external_string_size (abfd
),
1839 bfd_get_symcount (abfd
) = obj_aout_external_sym_count (abfd
);
1841 obj_aout_symbols (abfd
) = cached
;
1843 /* It is very likely that anybody who calls this function will not
1844 want the external symbol information, so if it was allocated
1845 because of our call to aout_get_external_symbols, we free it up
1846 right away to save space. */
1847 if (old_external_syms
== (struct external_nlist
*) NULL
1848 && obj_aout_external_syms (abfd
) != (struct external_nlist
*) NULL
)
1851 bfd_free_window (&obj_aout_sym_window (abfd
));
1853 free (obj_aout_external_syms (abfd
));
1855 obj_aout_external_syms (abfd
) = NULL
;
1861 /* We use a hash table when writing out symbols so that we only write
1862 out a particular string once. This helps particularly when the
1863 linker writes out stabs debugging entries, because each different
1864 contributing object file tends to have many duplicate stabs
1867 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1868 if BFD_TRADITIONAL_FORMAT is set. */
1870 static bfd_size_type add_to_stringtab
1871 PARAMS ((bfd
*, struct bfd_strtab_hash
*, const char *, boolean
));
1872 static boolean emit_stringtab
PARAMS ((bfd
*, struct bfd_strtab_hash
*));
1874 /* Get the index of a string in a strtab, adding it if it is not
1877 static INLINE bfd_size_type
1878 add_to_stringtab (abfd
, tab
, str
, copy
)
1880 struct bfd_strtab_hash
*tab
;
1885 bfd_size_type index
;
1887 /* An index of 0 always means the empty string. */
1888 if (str
== 0 || *str
== '\0')
1891 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1892 doesn't understand a hashed string table. */
1894 if ((abfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
1897 index
= _bfd_stringtab_add (tab
, str
, hash
, copy
);
1899 if (index
!= (bfd_size_type
) -1)
1901 /* Add BYTES_IN_WORD to the return value to account for the
1902 space taken up by the string table size. */
1903 index
+= BYTES_IN_WORD
;
1909 /* Write out a strtab. ABFD is already at the right location in the
1913 emit_stringtab (abfd
, tab
)
1915 struct bfd_strtab_hash
*tab
;
1917 bfd_byte buffer
[BYTES_IN_WORD
];
1919 /* The string table starts with the size. */
1920 PUT_WORD (abfd
, _bfd_stringtab_size (tab
) + BYTES_IN_WORD
, buffer
);
1921 if (bfd_write ((PTR
) buffer
, 1, BYTES_IN_WORD
, abfd
) != BYTES_IN_WORD
)
1924 return _bfd_stringtab_emit (abfd
, tab
);
1928 NAME(aout
,write_syms
) (abfd
)
1931 unsigned int count
;
1932 asymbol
**generic
= bfd_get_outsymbols (abfd
);
1933 struct bfd_strtab_hash
*strtab
;
1935 strtab
= _bfd_stringtab_init ();
1939 for (count
= 0; count
< bfd_get_symcount (abfd
); count
++)
1941 asymbol
*g
= generic
[count
];
1943 struct external_nlist nsp
;
1945 indx
= add_to_stringtab (abfd
, strtab
, g
->name
, false);
1946 if (indx
== (bfd_size_type
) -1)
1948 PUT_WORD (abfd
, indx
, (bfd_byte
*) nsp
.e_strx
);
1950 if (bfd_asymbol_flavour(g
) == abfd
->xvec
->flavour
)
1952 bfd_h_put_16(abfd
, aout_symbol(g
)->desc
, nsp
.e_desc
);
1953 bfd_h_put_8(abfd
, aout_symbol(g
)->other
, nsp
.e_other
);
1954 bfd_h_put_8(abfd
, aout_symbol(g
)->type
, nsp
.e_type
);
1958 bfd_h_put_16(abfd
,0, nsp
.e_desc
);
1959 bfd_h_put_8(abfd
, 0, nsp
.e_other
);
1960 bfd_h_put_8(abfd
, 0, nsp
.e_type
);
1963 if (! translate_to_native_sym_flags (abfd
, g
, &nsp
))
1966 if (bfd_write((PTR
)&nsp
,1,EXTERNAL_NLIST_SIZE
, abfd
)
1967 != EXTERNAL_NLIST_SIZE
)
1970 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1971 here, at the end. */
1975 if (! emit_stringtab (abfd
, strtab
))
1978 _bfd_stringtab_free (strtab
);
1983 _bfd_stringtab_free (strtab
);
1988 NAME(aout
,get_symtab
) (abfd
, location
)
1992 unsigned int counter
= 0;
1993 aout_symbol_type
*symbase
;
1995 if (!NAME(aout
,slurp_symbol_table
) (abfd
))
1998 for (symbase
= obj_aout_symbols(abfd
); counter
++ < bfd_get_symcount (abfd
);)
1999 *(location
++) = (asymbol
*) ( symbase
++);
2001 return bfd_get_symcount (abfd
);
2004 /* Standard reloc stuff */
2005 /* Output standard relocation information to a file in target byte order. */
2007 extern void NAME(aout
,swap_std_reloc_out
)
2008 PARAMS ((bfd
*, arelent
*, struct reloc_std_external
*));
2011 NAME(aout
,swap_std_reloc_out
) (abfd
, g
, natptr
)
2014 struct reloc_std_external
*natptr
;
2017 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2019 unsigned int r_length
;
2021 int r_baserel
, r_jmptable
, r_relative
;
2022 asection
*output_section
= sym
->section
->output_section
;
2024 PUT_WORD(abfd
, g
->address
, natptr
->r_address
);
2026 r_length
= g
->howto
->size
; /* Size as a power of two */
2027 r_pcrel
= (int) g
->howto
->pc_relative
; /* Relative to PC? */
2028 /* XXX This relies on relocs coming from a.out files. */
2029 r_baserel
= (g
->howto
->type
& 8) != 0;
2030 r_jmptable
= (g
->howto
->type
& 16) != 0;
2031 r_relative
= (g
->howto
->type
& 32) != 0;
2034 /* For a standard reloc, the addend is in the object file. */
2035 r_addend
= g
->addend
+ (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2038 /* name was clobbered by aout_write_syms to be symbol index */
2040 /* If this relocation is relative to a symbol then set the
2041 r_index to the symbols index, and the r_extern bit.
2043 Absolute symbols can come in in two ways, either as an offset
2044 from the abs section, or as a symbol which has an abs value.
2048 if (bfd_is_com_section (output_section
)
2049 || bfd_is_abs_section (output_section
)
2050 || bfd_is_und_section (output_section
))
2052 if (bfd_abs_section_ptr
->symbol
== sym
)
2054 /* Whoops, looked like an abs symbol, but is really an offset
2055 from the abs section */
2061 /* Fill in symbol */
2063 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2069 /* Just an ordinary section */
2071 r_index
= output_section
->target_index
;
2074 /* now the fun stuff */
2075 if (bfd_header_big_endian (abfd
)) {
2076 natptr
->r_index
[0] = r_index
>> 16;
2077 natptr
->r_index
[1] = r_index
>> 8;
2078 natptr
->r_index
[2] = r_index
;
2080 (r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
2081 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
2082 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
2083 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
2084 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
2085 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
);
2087 natptr
->r_index
[2] = r_index
>> 16;
2088 natptr
->r_index
[1] = r_index
>> 8;
2089 natptr
->r_index
[0] = r_index
;
2091 (r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
2092 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
2093 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
2094 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
2095 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
2096 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
);
2100 /* Extended stuff */
2101 /* Output extended relocation information to a file in target byte order. */
2103 extern void NAME(aout
,swap_ext_reloc_out
)
2104 PARAMS ((bfd
*, arelent
*, struct reloc_ext_external
*));
2107 NAME(aout
,swap_ext_reloc_out
) (abfd
, g
, natptr
)
2110 register struct reloc_ext_external
*natptr
;
2114 unsigned int r_type
;
2115 unsigned int r_addend
;
2116 asymbol
*sym
= *(g
->sym_ptr_ptr
);
2117 asection
*output_section
= sym
->section
->output_section
;
2119 PUT_WORD (abfd
, g
->address
, natptr
->r_address
);
2121 r_type
= (unsigned int) g
->howto
->type
;
2123 r_addend
= g
->addend
;
2124 if ((sym
->flags
& BSF_SECTION_SYM
) != 0)
2125 r_addend
+= (*(g
->sym_ptr_ptr
))->section
->output_section
->vma
;
2127 /* If this relocation is relative to a symbol then set the
2128 r_index to the symbols index, and the r_extern bit.
2130 Absolute symbols can come in in two ways, either as an offset
2131 from the abs section, or as a symbol which has an abs value.
2132 check for that here. */
2134 if (bfd_is_abs_section (bfd_get_section (sym
)))
2139 else if ((sym
->flags
& BSF_SECTION_SYM
) == 0)
2141 if (bfd_is_und_section (bfd_get_section (sym
))
2142 || (sym
->flags
& BSF_GLOBAL
) != 0)
2146 r_index
= (*(g
->sym_ptr_ptr
))->KEEPIT
;
2150 /* Just an ordinary section */
2152 r_index
= output_section
->target_index
;
2155 /* now the fun stuff */
2156 if (bfd_header_big_endian (abfd
)) {
2157 natptr
->r_index
[0] = r_index
>> 16;
2158 natptr
->r_index
[1] = r_index
>> 8;
2159 natptr
->r_index
[2] = r_index
;
2161 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
2162 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
2164 natptr
->r_index
[2] = r_index
>> 16;
2165 natptr
->r_index
[1] = r_index
>> 8;
2166 natptr
->r_index
[0] = r_index
;
2168 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
2169 | (r_type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
2172 PUT_WORD (abfd
, r_addend
, natptr
->r_addend
);
2175 /* BFD deals internally with all things based from the section they're
2176 in. so, something in 10 bytes into a text section with a base of
2177 50 would have a symbol (.text+10) and know .text vma was 50.
2179 Aout keeps all it's symbols based from zero, so the symbol would
2180 contain 60. This macro subs the base of each section from the value
2181 to give the true offset from the section */
2183 #define MOVE_ADDRESS(ad) \
2185 /* undefined symbol */ \
2186 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2187 cache_ptr->addend = ad; \
2189 /* defined, section relative. replace symbol with pointer to \
2190 symbol which points to section */ \
2191 switch (r_index) { \
2193 case N_TEXT | N_EXT: \
2194 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
2195 cache_ptr->addend = ad - su->textsec->vma; \
2198 case N_DATA | N_EXT: \
2199 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
2200 cache_ptr->addend = ad - su->datasec->vma; \
2203 case N_BSS | N_EXT: \
2204 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
2205 cache_ptr->addend = ad - su->bsssec->vma; \
2209 case N_ABS | N_EXT: \
2210 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2211 cache_ptr->addend = ad; \
2217 NAME(aout
,swap_ext_reloc_in
) (abfd
, bytes
, cache_ptr
, symbols
, symcount
)
2219 struct reloc_ext_external
*bytes
;
2222 bfd_size_type symcount
;
2224 unsigned int r_index
;
2226 unsigned int r_type
;
2227 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2229 cache_ptr
->address
= (GET_SWORD (abfd
, bytes
->r_address
));
2231 /* now the fun stuff */
2232 if (bfd_header_big_endian (abfd
)) {
2233 r_index
= (bytes
->r_index
[0] << 16)
2234 | (bytes
->r_index
[1] << 8)
2235 | bytes
->r_index
[2];
2236 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
2237 r_type
= (bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
2238 >> RELOC_EXT_BITS_TYPE_SH_BIG
;
2240 r_index
= (bytes
->r_index
[2] << 16)
2241 | (bytes
->r_index
[1] << 8)
2242 | bytes
->r_index
[0];
2243 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
2244 r_type
= (bytes
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
2245 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
;
2248 cache_ptr
->howto
= howto_table_ext
+ r_type
;
2250 /* Base relative relocs are always against the symbol table,
2251 regardless of the setting of r_extern. r_extern just reflects
2252 whether the symbol the reloc is against is local or global. */
2253 if (r_type
== RELOC_BASE10
2254 || r_type
== RELOC_BASE13
2255 || r_type
== RELOC_BASE22
)
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. */
2266 MOVE_ADDRESS(GET_SWORD(abfd
, bytes
->r_addend
));
2270 NAME(aout
,swap_std_reloc_in
) (abfd
, bytes
, cache_ptr
, symbols
, symcount
)
2272 struct reloc_std_external
*bytes
;
2275 bfd_size_type symcount
;
2277 unsigned int r_index
;
2279 unsigned int r_length
;
2281 int r_baserel
, r_jmptable
, r_relative
;
2282 struct aoutdata
*su
= &(abfd
->tdata
.aout_data
->a
);
2283 unsigned int howto_idx
;
2285 cache_ptr
->address
= bfd_h_get_32 (abfd
, bytes
->r_address
);
2287 /* now the fun stuff */
2288 if (bfd_header_big_endian (abfd
)) {
2289 r_index
= (bytes
->r_index
[0] << 16)
2290 | (bytes
->r_index
[1] << 8)
2291 | bytes
->r_index
[2];
2292 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
2293 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
2294 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
2295 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
2296 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
2297 r_length
= (bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
2298 >> RELOC_STD_BITS_LENGTH_SH_BIG
;
2300 r_index
= (bytes
->r_index
[2] << 16)
2301 | (bytes
->r_index
[1] << 8)
2302 | bytes
->r_index
[0];
2303 r_extern
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
2304 r_pcrel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
2305 r_baserel
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_BASEREL_LITTLE
));
2306 r_jmptable
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_LITTLE
));
2307 r_relative
= (0 != (bytes
->r_type
[0] & RELOC_STD_BITS_RELATIVE_LITTLE
));
2308 r_length
= (bytes
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
2309 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
;
2312 howto_idx
= r_length
+ 4 * r_pcrel
+ 8 * r_baserel
2313 + 16 * r_jmptable
+ 32 * r_relative
;
2314 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_std
));
2315 cache_ptr
->howto
= howto_table_std
+ howto_idx
;
2316 BFD_ASSERT (cache_ptr
->howto
->type
!= (unsigned int) -1);
2318 /* Base relative relocs are always against the symbol table,
2319 regardless of the setting of r_extern. r_extern just reflects
2320 whether the symbol the reloc is against is local or global. */
2324 if (r_extern
&& r_index
> symcount
)
2326 /* We could arrange to return an error, but it might be useful
2327 to see the file even if it is bad. */
2335 /* Read and swap the relocs for a section. */
2338 NAME(aout
,slurp_reloc_table
) (abfd
, asect
, symbols
)
2344 bfd_size_type reloc_size
;
2346 arelent
*reloc_cache
;
2348 unsigned int counter
= 0;
2351 if (asect
->relocation
)
2354 if (asect
->flags
& SEC_CONSTRUCTOR
)
2357 if (asect
== obj_datasec (abfd
))
2358 reloc_size
= exec_hdr(abfd
)->a_drsize
;
2359 else if (asect
== obj_textsec (abfd
))
2360 reloc_size
= exec_hdr(abfd
)->a_trsize
;
2361 else if (asect
== obj_bsssec (abfd
))
2365 bfd_set_error (bfd_error_invalid_operation
);
2369 if (bfd_seek (abfd
, asect
->rel_filepos
, SEEK_SET
) != 0)
2372 each_size
= obj_reloc_entry_size (abfd
);
2374 count
= reloc_size
/ each_size
;
2376 reloc_cache
= (arelent
*) bfd_malloc ((size_t) (count
* sizeof (arelent
)));
2377 if (reloc_cache
== NULL
&& count
!= 0)
2379 memset (reloc_cache
, 0, count
* sizeof (arelent
));
2381 relocs
= bfd_malloc ((size_t) reloc_size
);
2382 if (relocs
== NULL
&& reloc_size
!= 0)
2388 if (bfd_read (relocs
, 1, reloc_size
, abfd
) != reloc_size
)
2395 cache_ptr
= reloc_cache
;
2396 if (each_size
== RELOC_EXT_SIZE
)
2398 register struct reloc_ext_external
*rptr
=
2399 (struct reloc_ext_external
*) relocs
;
2401 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2402 MY_swap_ext_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2403 bfd_get_symcount (abfd
));
2407 register struct reloc_std_external
*rptr
=
2408 (struct reloc_std_external
*) relocs
;
2410 for (; counter
< count
; counter
++, rptr
++, cache_ptr
++)
2411 MY_swap_std_reloc_in (abfd
, rptr
, cache_ptr
, symbols
,
2412 bfd_get_symcount (abfd
));
2417 asect
->relocation
= reloc_cache
;
2418 asect
->reloc_count
= cache_ptr
- reloc_cache
;
2423 /* Write out a relocation section into an object file. */
2426 NAME(aout
,squirt_out_relocs
) (abfd
, section
)
2431 unsigned char *native
, *natptr
;
2434 unsigned int count
= section
->reloc_count
;
2437 if (count
== 0 || section
->orelocation
== NULL
)
2440 each_size
= obj_reloc_entry_size (abfd
);
2441 natsize
= each_size
* count
;
2442 native
= (unsigned char *) bfd_zalloc (abfd
, natsize
);
2446 generic
= section
->orelocation
;
2448 if (each_size
== RELOC_EXT_SIZE
)
2450 for (natptr
= native
;
2452 --count
, natptr
+= each_size
, ++generic
)
2453 MY_swap_ext_reloc_out (abfd
, *generic
,
2454 (struct reloc_ext_external
*) natptr
);
2458 for (natptr
= native
;
2460 --count
, natptr
+= each_size
, ++generic
)
2461 MY_swap_std_reloc_out(abfd
, *generic
, (struct reloc_std_external
*)natptr
);
2464 if ( bfd_write ((PTR
) native
, 1, natsize
, abfd
) != natsize
) {
2465 bfd_release(abfd
, native
);
2468 bfd_release (abfd
, native
);
2473 /* This is stupid. This function should be a boolean predicate */
2475 NAME(aout
,canonicalize_reloc
) (abfd
, section
, relptr
, symbols
)
2481 arelent
*tblptr
= section
->relocation
;
2484 if (section
== obj_bsssec (abfd
))
2490 if (!(tblptr
|| NAME(aout
,slurp_reloc_table
) (abfd
, section
, symbols
)))
2493 if (section
->flags
& SEC_CONSTRUCTOR
) {
2494 arelent_chain
*chain
= section
->constructor_chain
;
2495 for (count
= 0; count
< section
->reloc_count
; count
++) {
2496 *relptr
++ = &chain
->relent
;
2497 chain
= chain
->next
;
2501 tblptr
= section
->relocation
;
2503 for (count
= 0; count
++ < section
->reloc_count
;)
2505 *relptr
++ = tblptr
++;
2510 return section
->reloc_count
;
2514 NAME(aout
,get_reloc_upper_bound
) (abfd
, asect
)
2518 if (bfd_get_format (abfd
) != bfd_object
) {
2519 bfd_set_error (bfd_error_invalid_operation
);
2522 if (asect
->flags
& SEC_CONSTRUCTOR
) {
2523 return (sizeof (arelent
*) * (asect
->reloc_count
+1));
2526 if (asect
== obj_datasec (abfd
))
2527 return (sizeof (arelent
*)
2528 * ((exec_hdr(abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
))
2531 if (asect
== obj_textsec (abfd
))
2532 return (sizeof (arelent
*)
2533 * ((exec_hdr(abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
))
2536 if (asect
== obj_bsssec (abfd
))
2537 return sizeof (arelent
*);
2539 if (asect
== obj_bsssec (abfd
))
2542 bfd_set_error (bfd_error_invalid_operation
);
2547 NAME(aout
,get_symtab_upper_bound
) (abfd
)
2550 if (!NAME(aout
,slurp_symbol_table
) (abfd
))
2553 return (bfd_get_symcount (abfd
)+1) * (sizeof (aout_symbol_type
*));
2557 NAME(aout
,get_lineno
) (ignore_abfd
, ignore_symbol
)
2558 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
2559 asymbol
*ignore_symbol ATTRIBUTE_UNUSED
;
2561 return (alent
*)NULL
;
2565 NAME(aout
,get_symbol_info
) (ignore_abfd
, symbol
, ret
)
2566 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
2570 bfd_symbol_info (symbol
, ret
);
2572 if (ret
->type
== '?')
2574 int type_code
= aout_symbol(symbol
)->type
& 0xff;
2575 const char *stab_name
= bfd_get_stab_name (type_code
);
2576 static char buf
[10];
2578 if (stab_name
== NULL
)
2580 sprintf (buf
, "(%d)", type_code
);
2584 ret
->stab_type
= type_code
;
2585 ret
->stab_other
= (unsigned) (aout_symbol(symbol
)->other
& 0xff);
2586 ret
->stab_desc
= (unsigned) (aout_symbol(symbol
)->desc
& 0xffff);
2587 ret
->stab_name
= stab_name
;
2592 NAME(aout
,print_symbol
) (ignore_abfd
, afile
, symbol
, how
)
2593 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
2596 bfd_print_symbol_type how
;
2598 FILE *file
= (FILE *)afile
;
2601 case bfd_print_symbol_name
:
2603 fprintf (file
,"%s", symbol
->name
);
2605 case bfd_print_symbol_more
:
2606 fprintf (file
,"%4x %2x %2x",(unsigned) (aout_symbol(symbol
)->desc
& 0xffff),
2607 (unsigned) (aout_symbol(symbol
)->other
& 0xff),
2608 (unsigned) (aout_symbol(symbol
)->type
));
2610 case bfd_print_symbol_all
:
2612 CONST
char *section_name
= symbol
->section
->name
;
2614 bfd_print_symbol_vandf((PTR
)file
,symbol
);
2616 fprintf (file
," %-5s %04x %02x %02x",
2618 (unsigned) (aout_symbol(symbol
)->desc
& 0xffff),
2619 (unsigned) (aout_symbol(symbol
)->other
& 0xff),
2620 (unsigned) (aout_symbol(symbol
)->type
& 0xff));
2622 fprintf (file
," %s", symbol
->name
);
2628 /* If we don't have to allocate more than 1MB to hold the generic
2629 symbols, we use the generic minisymbol methord: it's faster, since
2630 it only translates the symbols once, not multiple times. */
2631 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2633 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2634 symbols. The minisymbol_to_symbol function translates these into
2635 BFD asymbol structures. */
2638 NAME(aout
,read_minisymbols
) (abfd
, dynamic
, minisymsp
, sizep
)
2642 unsigned int *sizep
;
2646 /* We could handle the dynamic symbols here as well, but it's
2647 easier to hand them off. */
2648 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2651 if (! aout_get_external_symbols (abfd
))
2654 if (obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2655 return _bfd_generic_read_minisymbols (abfd
, dynamic
, minisymsp
, sizep
);
2657 *minisymsp
= (PTR
) obj_aout_external_syms (abfd
);
2659 /* By passing the external symbols back from this routine, we are
2660 giving up control over the memory block. Clear
2661 obj_aout_external_syms, so that we do not try to free it
2663 obj_aout_external_syms (abfd
) = NULL
;
2665 *sizep
= EXTERNAL_NLIST_SIZE
;
2666 return obj_aout_external_sym_count (abfd
);
2669 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2670 unmodified a.out symbol. The SYM argument is a structure returned
2671 by bfd_make_empty_symbol, which we fill in here. */
2674 NAME(aout
,minisymbol_to_symbol
) (abfd
, dynamic
, minisym
, sym
)
2681 || obj_aout_external_sym_count (abfd
) < MINISYM_THRESHOLD
)
2682 return _bfd_generic_minisymbol_to_symbol (abfd
, dynamic
, minisym
, sym
);
2684 memset (sym
, 0, sizeof (aout_symbol_type
));
2686 /* We call translate_symbol_table to translate a single symbol. */
2687 if (! (NAME(aout
,translate_symbol_table
)
2689 (aout_symbol_type
*) sym
,
2690 (struct external_nlist
*) minisym
,
2692 obj_aout_external_strings (abfd
),
2693 obj_aout_external_string_size (abfd
),
2701 provided a BFD, a section and an offset into the section, calculate
2702 and return the name of the source file and the line nearest to the
2707 NAME(aout
,find_nearest_line
)
2708 (abfd
, section
, symbols
, offset
, filename_ptr
, functionname_ptr
, line_ptr
)
2713 CONST
char **filename_ptr
;
2714 CONST
char **functionname_ptr
;
2715 unsigned int *line_ptr
;
2717 /* Run down the file looking for the filename, function and linenumber */
2719 CONST
char *directory_name
= NULL
;
2720 CONST
char *main_file_name
= NULL
;
2721 CONST
char *current_file_name
= NULL
;
2722 CONST
char *line_file_name
= NULL
; /* Value of current_file_name at line number. */
2723 CONST
char *line_directory_name
= NULL
; /* Value of directory_name at line number. */
2724 bfd_vma low_line_vma
= 0;
2725 bfd_vma low_func_vma
= 0;
2727 size_t filelen
, funclen
;
2730 *filename_ptr
= abfd
->filename
;
2731 *functionname_ptr
= 0;
2733 if (symbols
!= (asymbol
**)NULL
) {
2734 for (p
= symbols
; *p
; p
++) {
2735 aout_symbol_type
*q
= (aout_symbol_type
*) (*p
);
2739 /* If this looks like a file name symbol, and it comes after
2740 the line number we have found so far, but before the
2741 offset, then we have probably not found the right line
2743 if (q
->symbol
.value
<= offset
2744 && ((q
->symbol
.value
> low_line_vma
2745 && (line_file_name
!= NULL
2747 || (q
->symbol
.value
> low_func_vma
2750 const char *symname
;
2752 symname
= q
->symbol
.name
;
2753 if (strcmp (symname
+ strlen (symname
) - 2, ".o") == 0)
2755 if (q
->symbol
.value
> low_line_vma
)
2758 line_file_name
= NULL
;
2760 if (q
->symbol
.value
> low_func_vma
)
2767 /* If this symbol is less than the offset, but greater than
2768 the line number we have found so far, then we have not
2769 found the right line number. */
2770 if (q
->symbol
.value
<= offset
)
2772 if (q
->symbol
.value
> low_line_vma
)
2775 line_file_name
= NULL
;
2777 if (q
->symbol
.value
> low_func_vma
)
2781 main_file_name
= current_file_name
= q
->symbol
.name
;
2782 /* Look ahead to next symbol to check if that too is an N_SO. */
2786 q
= (aout_symbol_type
*) (*p
);
2787 if (q
->type
!= (int)N_SO
)
2790 /* Found a second N_SO First is directory; second is filename. */
2791 directory_name
= current_file_name
;
2792 main_file_name
= current_file_name
= q
->symbol
.name
;
2793 if (obj_textsec(abfd
) != section
)
2797 current_file_name
= q
->symbol
.name
;
2804 /* We'll keep this if it resolves nearer than the one we have
2806 if (q
->symbol
.value
>= low_line_vma
2807 && q
->symbol
.value
<= offset
)
2809 *line_ptr
= q
->desc
;
2810 low_line_vma
= q
->symbol
.value
;
2811 line_file_name
= current_file_name
;
2812 line_directory_name
= directory_name
;
2817 /* We'll keep this if it is nearer than the one we have already */
2818 if (q
->symbol
.value
>= low_func_vma
&&
2819 q
->symbol
.value
<= offset
) {
2820 low_func_vma
= q
->symbol
.value
;
2821 func
= (asymbol
*)q
;
2823 else if (q
->symbol
.value
> offset
)
2834 main_file_name
= line_file_name
;
2835 directory_name
= line_directory_name
;
2838 if (main_file_name
== NULL
2839 || IS_ABSOLUTE_PATH (main_file_name
)
2840 || directory_name
== NULL
)
2843 filelen
= strlen (directory_name
) + strlen (main_file_name
);
2847 funclen
= strlen (bfd_asymbol_name (func
));
2849 if (adata (abfd
).line_buf
!= NULL
)
2850 free (adata (abfd
).line_buf
);
2851 if (filelen
+ funclen
== 0)
2852 adata (abfd
).line_buf
= buf
= NULL
;
2855 buf
= (char *) bfd_malloc (filelen
+ funclen
+ 3);
2856 adata (abfd
).line_buf
= buf
;
2861 if (main_file_name
!= NULL
)
2863 if (IS_ABSOLUTE_PATH (main_file_name
) || directory_name
== NULL
)
2864 *filename_ptr
= main_file_name
;
2867 sprintf (buf
, "%s%s", directory_name
, main_file_name
);
2868 *filename_ptr
= buf
;
2875 const char *function
= func
->name
;
2878 /* The caller expects a symbol name. We actually have a
2879 function name, without the leading underscore. Put the
2880 underscore back in, so that the caller gets a symbol name. */
2881 if (bfd_get_symbol_leading_char (abfd
) == '\0')
2882 strcpy (buf
, function
);
2885 buf
[0] = bfd_get_symbol_leading_char (abfd
);
2886 strcpy (buf
+ 1, function
);
2888 /* Have to remove : stuff */
2889 p
= strchr (buf
, ':');
2892 *functionname_ptr
= buf
;
2899 NAME(aout
,sizeof_headers
) (abfd
, execable
)
2901 boolean execable ATTRIBUTE_UNUSED
;
2903 return adata(abfd
).exec_bytes_size
;
2906 /* Free all information we have cached for this BFD. We can always
2907 read it again later if we need it. */
2910 NAME(aout
,bfd_free_cached_info
) (abfd
)
2915 if (bfd_get_format (abfd
) != bfd_object
2916 || abfd
->tdata
.aout_data
== NULL
)
2919 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2920 BFCI_FREE (obj_aout_symbols (abfd
));
2922 obj_aout_external_syms (abfd
) = 0;
2923 bfd_free_window (&obj_aout_sym_window (abfd
));
2924 bfd_free_window (&obj_aout_string_window (abfd
));
2925 obj_aout_external_strings (abfd
) = 0;
2927 BFCI_FREE (obj_aout_external_syms (abfd
));
2928 BFCI_FREE (obj_aout_external_strings (abfd
));
2930 for (o
= abfd
->sections
; o
!= (asection
*) NULL
; o
= o
->next
)
2931 BFCI_FREE (o
->relocation
);
2937 /* a.out link code. */
2939 static boolean aout_link_add_object_symbols
2940 PARAMS ((bfd
*, struct bfd_link_info
*));
2941 static boolean aout_link_check_archive_element
2942 PARAMS ((bfd
*, struct bfd_link_info
*, boolean
*));
2943 static boolean aout_link_free_symbols
PARAMS ((bfd
*));
2944 static boolean aout_link_check_ar_symbols
2945 PARAMS ((bfd
*, struct bfd_link_info
*, boolean
*pneeded
));
2946 static boolean aout_link_add_symbols
2947 PARAMS ((bfd
*, struct bfd_link_info
*));
2949 /* Routine to create an entry in an a.out link hash table. */
2951 struct bfd_hash_entry
*
2952 NAME(aout
,link_hash_newfunc
) (entry
, table
, string
)
2953 struct bfd_hash_entry
*entry
;
2954 struct bfd_hash_table
*table
;
2957 struct aout_link_hash_entry
*ret
= (struct aout_link_hash_entry
*) entry
;
2959 /* Allocate the structure if it has not already been allocated by a
2961 if (ret
== (struct aout_link_hash_entry
*) NULL
)
2962 ret
= ((struct aout_link_hash_entry
*)
2963 bfd_hash_allocate (table
, sizeof (struct aout_link_hash_entry
)));
2964 if (ret
== (struct aout_link_hash_entry
*) NULL
)
2965 return (struct bfd_hash_entry
*) ret
;
2967 /* Call the allocation method of the superclass. */
2968 ret
= ((struct aout_link_hash_entry
*)
2969 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2973 /* Set local fields. */
2974 ret
->written
= false;
2978 return (struct bfd_hash_entry
*) ret
;
2981 /* Initialize an a.out link hash table. */
2984 NAME(aout
,link_hash_table_init
) (table
, abfd
, newfunc
)
2985 struct aout_link_hash_table
*table
;
2987 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
2988 struct bfd_hash_table
*,
2991 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
2994 /* Create an a.out link hash table. */
2996 struct bfd_link_hash_table
*
2997 NAME(aout
,link_hash_table_create
) (abfd
)
3000 struct aout_link_hash_table
*ret
;
3002 ret
= ((struct aout_link_hash_table
*)
3003 bfd_alloc (abfd
, sizeof (struct aout_link_hash_table
)));
3005 return (struct bfd_link_hash_table
*) NULL
;
3006 if (! NAME(aout
,link_hash_table_init
) (ret
, abfd
,
3007 NAME(aout
,link_hash_newfunc
)))
3010 return (struct bfd_link_hash_table
*) NULL
;
3015 /* Given an a.out BFD, add symbols to the global hash table as
3019 NAME(aout
,link_add_symbols
) (abfd
, info
)
3021 struct bfd_link_info
*info
;
3023 switch (bfd_get_format (abfd
))
3026 return aout_link_add_object_symbols (abfd
, info
);
3028 return _bfd_generic_link_add_archive_symbols
3029 (abfd
, info
, aout_link_check_archive_element
);
3031 bfd_set_error (bfd_error_wrong_format
);
3036 /* Add symbols from an a.out object file. */
3039 aout_link_add_object_symbols (abfd
, info
)
3041 struct bfd_link_info
*info
;
3043 if (! aout_get_external_symbols (abfd
))
3045 if (! aout_link_add_symbols (abfd
, info
))
3047 if (! info
->keep_memory
)
3049 if (! aout_link_free_symbols (abfd
))
3055 /* Check a single archive element to see if we need to include it in
3056 the link. *PNEEDED is set according to whether this element is
3057 needed in the link or not. This is called from
3058 _bfd_generic_link_add_archive_symbols. */
3061 aout_link_check_archive_element (abfd
, info
, pneeded
)
3063 struct bfd_link_info
*info
;
3066 if (! aout_get_external_symbols (abfd
))
3069 if (! aout_link_check_ar_symbols (abfd
, info
, pneeded
))
3074 if (! aout_link_add_symbols (abfd
, info
))
3078 if (! info
->keep_memory
|| ! *pneeded
)
3080 if (! aout_link_free_symbols (abfd
))
3087 /* Free up the internal symbols read from an a.out file. */
3090 aout_link_free_symbols (abfd
)
3093 if (obj_aout_external_syms (abfd
) != (struct external_nlist
*) NULL
)
3096 bfd_free_window (&obj_aout_sym_window (abfd
));
3098 free ((PTR
) obj_aout_external_syms (abfd
));
3100 obj_aout_external_syms (abfd
) = (struct external_nlist
*) NULL
;
3102 if (obj_aout_external_strings (abfd
) != (char *) NULL
)
3105 bfd_free_window (&obj_aout_string_window (abfd
));
3107 free ((PTR
) obj_aout_external_strings (abfd
));
3109 obj_aout_external_strings (abfd
) = (char *) NULL
;
3114 /* Look through the internal symbols to see if this object file should
3115 be included in the link. We should include this object file if it
3116 defines any symbols which are currently undefined. If this object
3117 file defines a common symbol, then we may adjust the size of the
3118 known symbol but we do not include the object file in the link
3119 (unless there is some other reason to include it). */
3122 aout_link_check_ar_symbols (abfd
, info
, pneeded
)
3124 struct bfd_link_info
*info
;
3127 register struct external_nlist
*p
;
3128 struct external_nlist
*pend
;
3133 /* Look through all the symbols. */
3134 p
= obj_aout_external_syms (abfd
);
3135 pend
= p
+ obj_aout_external_sym_count (abfd
);
3136 strings
= obj_aout_external_strings (abfd
);
3137 for (; p
< pend
; p
++)
3139 int type
= bfd_h_get_8 (abfd
, p
->e_type
);
3141 struct bfd_link_hash_entry
*h
;
3143 /* Ignore symbols that are not externally visible. This is an
3144 optimization only, as we check the type more thoroughly
3146 if (((type
& N_EXT
) == 0
3147 || (type
& N_STAB
) != 0
3154 if (type
== N_WARNING
3160 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3161 h
= bfd_link_hash_lookup (info
->hash
, name
, false, false, true);
3163 /* We are only interested in symbols that are currently
3164 undefined or common. */
3165 if (h
== (struct bfd_link_hash_entry
*) NULL
3166 || (h
->type
!= bfd_link_hash_undefined
3167 && h
->type
!= bfd_link_hash_common
))
3169 if (type
== (N_INDR
| N_EXT
))
3174 if (type
== (N_TEXT
| N_EXT
)
3175 || type
== (N_DATA
| N_EXT
)
3176 || type
== (N_BSS
| N_EXT
)
3177 || type
== (N_ABS
| N_EXT
)
3178 || type
== (N_INDR
| N_EXT
))
3180 /* This object file defines this symbol. We must link it
3181 in. This is true regardless of whether the current
3182 definition of the symbol is undefined or common. If the
3183 current definition is common, we have a case in which we
3184 have already seen an object file including
3186 and this object file from the archive includes
3188 In such a case we must include this object file.
3190 FIXME: The SunOS 4.1.3 linker will pull in the archive
3191 element if the symbol is defined in the .data section,
3192 but not if it is defined in the .text section. That
3193 seems a bit crazy to me, and I haven't implemented it.
3194 However, it might be correct. */
3195 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
3201 if (type
== (N_UNDF
| N_EXT
))
3205 value
= GET_WORD (abfd
, p
->e_value
);
3208 /* This symbol is common in the object from the archive
3210 if (h
->type
== bfd_link_hash_undefined
)
3215 symbfd
= h
->u
.undef
.abfd
;
3216 if (symbfd
== (bfd
*) NULL
)
3218 /* This symbol was created as undefined from
3219 outside BFD. We assume that we should link
3220 in the object file. This is done for the -u
3221 option in the linker. */
3222 if (! (*info
->callbacks
->add_archive_element
) (info
,
3229 /* Turn the current link symbol into a common
3230 symbol. It is already on the undefs list. */
3231 h
->type
= bfd_link_hash_common
;
3232 h
->u
.c
.p
= ((struct bfd_link_hash_common_entry
*)
3233 bfd_hash_allocate (&info
->hash
->table
,
3234 sizeof (struct bfd_link_hash_common_entry
)));
3235 if (h
->u
.c
.p
== NULL
)
3238 h
->u
.c
.size
= value
;
3240 /* FIXME: This isn't quite right. The maximum
3241 alignment of a common symbol should be set by the
3242 architecture of the output file, not of the input
3244 power
= bfd_log2 (value
);
3245 if (power
> bfd_get_arch_info (abfd
)->section_align_power
)
3246 power
= bfd_get_arch_info (abfd
)->section_align_power
;
3247 h
->u
.c
.p
->alignment_power
= power
;
3249 h
->u
.c
.p
->section
= bfd_make_section_old_way (symbfd
,
3254 /* Adjust the size of the common symbol if
3256 if (value
> h
->u
.c
.size
)
3257 h
->u
.c
.size
= value
;
3267 /* This symbol is weak but defined. We must pull it in if
3268 the current link symbol is undefined, but we don't want
3269 it if the current link symbol is common. */
3270 if (h
->type
== bfd_link_hash_undefined
)
3272 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
3280 /* We do not need this object file. */
3284 /* Add all symbols from an object file to the hash table. */
3287 aout_link_add_symbols (abfd
, info
)
3289 struct bfd_link_info
*info
;
3291 boolean (*add_one_symbol
) PARAMS ((struct bfd_link_info
*, bfd
*,
3292 const char *, flagword
, asection
*,
3293 bfd_vma
, const char *, boolean
,
3295 struct bfd_link_hash_entry
**));
3296 struct external_nlist
*syms
;
3297 bfd_size_type sym_count
;
3300 struct aout_link_hash_entry
**sym_hash
;
3301 register struct external_nlist
*p
;
3302 struct external_nlist
*pend
;
3304 syms
= obj_aout_external_syms (abfd
);
3305 sym_count
= obj_aout_external_sym_count (abfd
);
3306 strings
= obj_aout_external_strings (abfd
);
3307 if (info
->keep_memory
)
3312 if (aout_backend_info (abfd
)->add_dynamic_symbols
!= NULL
)
3314 if (! ((*aout_backend_info (abfd
)->add_dynamic_symbols
)
3315 (abfd
, info
, &syms
, &sym_count
, &strings
)))
3319 /* We keep a list of the linker hash table entries that correspond
3320 to particular symbols. We could just look them up in the hash
3321 table, but keeping the list is more efficient. Perhaps this
3322 should be conditional on info->keep_memory. */
3323 sym_hash
= ((struct aout_link_hash_entry
**)
3326 * sizeof (struct aout_link_hash_entry
*))));
3327 if (sym_hash
== NULL
&& sym_count
!= 0)
3329 obj_aout_sym_hashes (abfd
) = sym_hash
;
3331 add_one_symbol
= aout_backend_info (abfd
)->add_one_symbol
;
3332 if (add_one_symbol
== NULL
)
3333 add_one_symbol
= _bfd_generic_link_add_one_symbol
;
3336 pend
= p
+ sym_count
;
3337 for (; p
< pend
; p
++, sym_hash
++)
3348 type
= bfd_h_get_8 (abfd
, p
->e_type
);
3350 /* Ignore debugging symbols. */
3351 if ((type
& N_STAB
) != 0)
3354 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3355 value
= GET_WORD (abfd
, p
->e_value
);
3372 /* Ignore symbols that are not externally visible. */
3375 /* Ignore local indirect symbol. */
3380 case N_UNDF
| N_EXT
:
3383 section
= bfd_und_section_ptr
;
3387 section
= bfd_com_section_ptr
;
3390 section
= bfd_abs_section_ptr
;
3392 case N_TEXT
| N_EXT
:
3393 section
= obj_textsec (abfd
);
3394 value
-= bfd_get_section_vma (abfd
, section
);
3396 case N_DATA
| N_EXT
:
3397 case N_SETV
| N_EXT
:
3398 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3399 translate_from_native_sym_flags. */
3400 section
= obj_datasec (abfd
);
3401 value
-= bfd_get_section_vma (abfd
, section
);
3404 section
= obj_bsssec (abfd
);
3405 value
-= bfd_get_section_vma (abfd
, section
);
3407 case N_INDR
| N_EXT
:
3408 /* An indirect symbol. The next symbol is the symbol
3409 which this one really is. */
3410 BFD_ASSERT (p
+ 1 < pend
);
3412 string
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3413 section
= bfd_ind_section_ptr
;
3414 flags
|= BSF_INDIRECT
;
3416 case N_COMM
| N_EXT
:
3417 section
= bfd_com_section_ptr
;
3419 case N_SETA
: case N_SETA
| N_EXT
:
3420 section
= bfd_abs_section_ptr
;
3421 flags
|= BSF_CONSTRUCTOR
;
3423 case N_SETT
: case N_SETT
| N_EXT
:
3424 section
= obj_textsec (abfd
);
3425 flags
|= BSF_CONSTRUCTOR
;
3426 value
-= bfd_get_section_vma (abfd
, section
);
3428 case N_SETD
: case N_SETD
| N_EXT
:
3429 section
= obj_datasec (abfd
);
3430 flags
|= BSF_CONSTRUCTOR
;
3431 value
-= bfd_get_section_vma (abfd
, section
);
3433 case N_SETB
: case N_SETB
| N_EXT
:
3434 section
= obj_bsssec (abfd
);
3435 flags
|= BSF_CONSTRUCTOR
;
3436 value
-= bfd_get_section_vma (abfd
, section
);
3439 /* A warning symbol. The next symbol is the one to warn
3441 BFD_ASSERT (p
+ 1 < pend
);
3444 name
= strings
+ GET_WORD (abfd
, p
->e_strx
);
3445 section
= bfd_und_section_ptr
;
3446 flags
|= BSF_WARNING
;
3449 section
= bfd_und_section_ptr
;
3453 section
= bfd_abs_section_ptr
;
3457 section
= obj_textsec (abfd
);
3458 value
-= bfd_get_section_vma (abfd
, section
);
3462 section
= obj_datasec (abfd
);
3463 value
-= bfd_get_section_vma (abfd
, section
);
3467 section
= obj_bsssec (abfd
);
3468 value
-= bfd_get_section_vma (abfd
, section
);
3473 if (! ((*add_one_symbol
)
3474 (info
, abfd
, name
, flags
, section
, value
, string
, copy
, false,
3475 (struct bfd_link_hash_entry
**) sym_hash
)))
3478 /* Restrict the maximum alignment of a common symbol based on
3479 the architecture, since a.out has no way to represent
3480 alignment requirements of a section in a .o file. FIXME:
3481 This isn't quite right: it should use the architecture of the
3482 output file, not the input files. */
3483 if ((*sym_hash
)->root
.type
== bfd_link_hash_common
3484 && ((*sym_hash
)->root
.u
.c
.p
->alignment_power
>
3485 bfd_get_arch_info (abfd
)->section_align_power
))
3486 (*sym_hash
)->root
.u
.c
.p
->alignment_power
=
3487 bfd_get_arch_info (abfd
)->section_align_power
;
3489 /* If this is a set symbol, and we are not building sets, then
3490 it is possible for the hash entry to not have been set. In
3491 such a case, treat the symbol as not globally defined. */
3492 if ((*sym_hash
)->root
.type
== bfd_link_hash_new
)
3494 BFD_ASSERT ((flags
& BSF_CONSTRUCTOR
) != 0);
3498 if (type
== (N_INDR
| N_EXT
) || type
== N_WARNING
)
3505 /* A hash table used for header files with N_BINCL entries. */
3507 struct aout_link_includes_table
3509 struct bfd_hash_table root
;
3512 /* A linked list of totals that we have found for a particular header
3515 struct aout_link_includes_totals
3517 struct aout_link_includes_totals
*next
;
3521 /* An entry in the header file hash table. */
3523 struct aout_link_includes_entry
3525 struct bfd_hash_entry root
;
3526 /* List of totals we have found for this file. */
3527 struct aout_link_includes_totals
*totals
;
3530 /* Look up an entry in an the header file hash table. */
3532 #define aout_link_includes_lookup(table, string, create, copy) \
3533 ((struct aout_link_includes_entry *) \
3534 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3536 /* During the final link step we need to pass around a bunch of
3537 information, so we do it in an instance of this structure. */
3539 struct aout_final_link_info
3541 /* General link information. */
3542 struct bfd_link_info
*info
;
3545 /* Reloc file positions. */
3546 file_ptr treloff
, dreloff
;
3547 /* File position of symbols. */
3550 struct bfd_strtab_hash
*strtab
;
3551 /* Header file hash table. */
3552 struct aout_link_includes_table includes
;
3553 /* A buffer large enough to hold the contents of any section. */
3555 /* A buffer large enough to hold the relocs of any section. */
3557 /* A buffer large enough to hold the symbol map of any input BFD. */
3559 /* A buffer large enough to hold output symbols of any input BFD. */
3560 struct external_nlist
*output_syms
;
3563 static struct bfd_hash_entry
*aout_link_includes_newfunc
3564 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
3565 static boolean aout_link_input_bfd
3566 PARAMS ((struct aout_final_link_info
*, bfd
*input_bfd
));
3567 static boolean aout_link_write_symbols
3568 PARAMS ((struct aout_final_link_info
*, bfd
*input_bfd
));
3569 static boolean aout_link_write_other_symbol
3570 PARAMS ((struct aout_link_hash_entry
*, PTR
));
3571 static boolean aout_link_input_section
3572 PARAMS ((struct aout_final_link_info
*, bfd
*input_bfd
,
3573 asection
*input_section
, file_ptr
*reloff_ptr
,
3574 bfd_size_type rel_size
));
3575 static boolean aout_link_input_section_std
3576 PARAMS ((struct aout_final_link_info
*, bfd
*input_bfd
,
3577 asection
*input_section
, struct reloc_std_external
*,
3578 bfd_size_type rel_size
, bfd_byte
*contents
));
3579 static boolean aout_link_input_section_ext
3580 PARAMS ((struct aout_final_link_info
*, bfd
*input_bfd
,
3581 asection
*input_section
, struct reloc_ext_external
*,
3582 bfd_size_type rel_size
, bfd_byte
*contents
));
3583 static INLINE asection
*aout_reloc_index_to_section
3584 PARAMS ((bfd
*, int));
3585 static boolean aout_link_reloc_link_order
3586 PARAMS ((struct aout_final_link_info
*, asection
*,
3587 struct bfd_link_order
*));
3589 /* The function to create a new entry in the header file hash table. */
3591 static struct bfd_hash_entry
*
3592 aout_link_includes_newfunc (entry
, table
, string
)
3593 struct bfd_hash_entry
*entry
;
3594 struct bfd_hash_table
*table
;
3597 struct aout_link_includes_entry
*ret
=
3598 (struct aout_link_includes_entry
*) entry
;
3600 /* Allocate the structure if it has not already been allocated by a
3602 if (ret
== (struct aout_link_includes_entry
*) NULL
)
3603 ret
= ((struct aout_link_includes_entry
*)
3604 bfd_hash_allocate (table
,
3605 sizeof (struct aout_link_includes_entry
)));
3606 if (ret
== (struct aout_link_includes_entry
*) NULL
)
3607 return (struct bfd_hash_entry
*) ret
;
3609 /* Call the allocation method of the superclass. */
3610 ret
= ((struct aout_link_includes_entry
*)
3611 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
3614 /* Set local fields. */
3618 return (struct bfd_hash_entry
*) ret
;
3621 /* Do the final link step. This is called on the output BFD. The
3622 INFO structure should point to a list of BFDs linked through the
3623 link_next field which can be used to find each BFD which takes part
3624 in the output. Also, each section in ABFD should point to a list
3625 of bfd_link_order structures which list all the input sections for
3626 the output section. */
3629 NAME(aout
,final_link
) (abfd
, info
, callback
)
3631 struct bfd_link_info
*info
;
3632 void (*callback
) PARAMS ((bfd
*, file_ptr
*, file_ptr
*, file_ptr
*));
3634 struct aout_final_link_info aout_info
;
3635 boolean includes_hash_initialized
= false;
3637 bfd_size_type trsize
, drsize
;
3638 size_t max_contents_size
;
3639 size_t max_relocs_size
;
3640 size_t max_sym_count
;
3641 bfd_size_type text_size
;
3643 register struct bfd_link_order
*p
;
3645 boolean have_link_order_relocs
;
3648 abfd
->flags
|= DYNAMIC
;
3650 aout_info
.info
= info
;
3651 aout_info
.output_bfd
= abfd
;
3652 aout_info
.contents
= NULL
;
3653 aout_info
.relocs
= NULL
;
3654 aout_info
.symbol_map
= NULL
;
3655 aout_info
.output_syms
= NULL
;
3657 if (! bfd_hash_table_init_n (&aout_info
.includes
.root
,
3658 aout_link_includes_newfunc
,
3661 includes_hash_initialized
= true;
3663 /* Figure out the largest section size. Also, if generating
3664 relocateable output, count the relocs. */
3667 max_contents_size
= 0;
3668 max_relocs_size
= 0;
3670 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
3674 if (info
->relocateable
)
3676 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
3678 trsize
+= exec_hdr (sub
)->a_trsize
;
3679 drsize
+= exec_hdr (sub
)->a_drsize
;
3683 /* FIXME: We need to identify the .text and .data sections
3684 and call get_reloc_upper_bound and canonicalize_reloc to
3685 work out the number of relocs needed, and then multiply
3686 by the reloc size. */
3687 (*_bfd_error_handler
)
3688 (_("%s: relocateable link from %s to %s not supported"),
3689 bfd_get_filename (abfd
),
3690 sub
->xvec
->name
, abfd
->xvec
->name
);
3691 bfd_set_error (bfd_error_invalid_operation
);
3696 if (bfd_get_flavour (sub
) == bfd_target_aout_flavour
)
3698 sz
= bfd_section_size (sub
, obj_textsec (sub
));
3699 if (sz
> max_contents_size
)
3700 max_contents_size
= sz
;
3701 sz
= bfd_section_size (sub
, obj_datasec (sub
));
3702 if (sz
> max_contents_size
)
3703 max_contents_size
= sz
;
3705 sz
= exec_hdr (sub
)->a_trsize
;
3706 if (sz
> max_relocs_size
)
3707 max_relocs_size
= sz
;
3708 sz
= exec_hdr (sub
)->a_drsize
;
3709 if (sz
> max_relocs_size
)
3710 max_relocs_size
= sz
;
3712 sz
= obj_aout_external_sym_count (sub
);
3713 if (sz
> max_sym_count
)
3718 if (info
->relocateable
)
3720 if (obj_textsec (abfd
) != (asection
*) NULL
)
3721 trsize
+= (_bfd_count_link_order_relocs (obj_textsec (abfd
)
3723 * obj_reloc_entry_size (abfd
));
3724 if (obj_datasec (abfd
) != (asection
*) NULL
)
3725 drsize
+= (_bfd_count_link_order_relocs (obj_datasec (abfd
)
3727 * obj_reloc_entry_size (abfd
));
3730 exec_hdr (abfd
)->a_trsize
= trsize
;
3731 exec_hdr (abfd
)->a_drsize
= drsize
;
3733 exec_hdr (abfd
)->a_entry
= bfd_get_start_address (abfd
);
3735 /* Adjust the section sizes and vmas according to the magic number.
3736 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3737 filepos for each section. */
3738 if (! NAME(aout
,adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
))
3741 /* The relocation and symbol file positions differ among a.out
3742 targets. We are passed a callback routine from the backend
3743 specific code to handle this.
3744 FIXME: At this point we do not know how much space the symbol
3745 table will require. This will not work for any (nonstandard)
3746 a.out target that needs to know the symbol table size before it
3747 can compute the relocation file positions. This may or may not
3748 be the case for the hp300hpux target, for example. */
3749 (*callback
) (abfd
, &aout_info
.treloff
, &aout_info
.dreloff
,
3751 obj_textsec (abfd
)->rel_filepos
= aout_info
.treloff
;
3752 obj_datasec (abfd
)->rel_filepos
= aout_info
.dreloff
;
3753 obj_sym_filepos (abfd
) = aout_info
.symoff
;
3755 /* We keep a count of the symbols as we output them. */
3756 obj_aout_external_sym_count (abfd
) = 0;
3758 /* We accumulate the string table as we write out the symbols. */
3759 aout_info
.strtab
= _bfd_stringtab_init ();
3760 if (aout_info
.strtab
== NULL
)
3763 /* Allocate buffers to hold section contents and relocs. */
3764 aout_info
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
3765 aout_info
.relocs
= (PTR
) bfd_malloc (max_relocs_size
);
3766 aout_info
.symbol_map
= (int *) bfd_malloc (max_sym_count
* sizeof (int *));
3767 aout_info
.output_syms
= ((struct external_nlist
*)
3768 bfd_malloc ((max_sym_count
+ 1)
3769 * sizeof (struct external_nlist
)));
3770 if ((aout_info
.contents
== NULL
&& max_contents_size
!= 0)
3771 || (aout_info
.relocs
== NULL
&& max_relocs_size
!= 0)
3772 || (aout_info
.symbol_map
== NULL
&& max_sym_count
!= 0)
3773 || aout_info
.output_syms
== NULL
)
3776 /* If we have a symbol named __DYNAMIC, force it out now. This is
3777 required by SunOS. Doing this here rather than in sunos.c is a
3778 hack, but it's easier than exporting everything which would be
3781 struct aout_link_hash_entry
*h
;
3783 h
= aout_link_hash_lookup (aout_hash_table (info
), "__DYNAMIC",
3784 false, false, false);
3786 aout_link_write_other_symbol (h
, &aout_info
);
3789 /* The most time efficient way to do the link would be to read all
3790 the input object files into memory and then sort out the
3791 information into the output file. Unfortunately, that will
3792 probably use too much memory. Another method would be to step
3793 through everything that composes the text section and write it
3794 out, and then everything that composes the data section and write
3795 it out, and then write out the relocs, and then write out the
3796 symbols. Unfortunately, that requires reading stuff from each
3797 input file several times, and we will not be able to keep all the
3798 input files open simultaneously, and reopening them will be slow.
3800 What we do is basically process one input file at a time. We do
3801 everything we need to do with an input file once--copy over the
3802 section contents, handle the relocation information, and write
3803 out the symbols--and then we throw away the information we read
3804 from it. This approach requires a lot of lseeks of the output
3805 file, which is unfortunate but still faster than reopening a lot
3808 We use the output_has_begun field of the input BFDs to see
3809 whether we have already handled it. */
3810 for (sub
= info
->input_bfds
; sub
!= (bfd
*) NULL
; sub
= sub
->link_next
)
3811 sub
->output_has_begun
= false;
3813 /* Mark all sections which are to be included in the link. This
3814 will normally be every section. We need to do this so that we
3815 can identify any sections which the linker has decided to not
3817 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3819 for (p
= o
->link_order_head
; p
!= NULL
; p
= p
->next
)
3821 if (p
->type
== bfd_indirect_link_order
)
3822 p
->u
.indirect
.section
->linker_mark
= true;
3826 have_link_order_relocs
= false;
3827 for (o
= abfd
->sections
; o
!= (asection
*) NULL
; o
= o
->next
)
3829 for (p
= o
->link_order_head
;
3830 p
!= (struct bfd_link_order
*) NULL
;
3833 if (p
->type
== bfd_indirect_link_order
3834 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
3835 == bfd_target_aout_flavour
))
3839 input_bfd
= p
->u
.indirect
.section
->owner
;
3840 if (! input_bfd
->output_has_begun
)
3842 if (! aout_link_input_bfd (&aout_info
, input_bfd
))
3844 input_bfd
->output_has_begun
= true;
3847 else if (p
->type
== bfd_section_reloc_link_order
3848 || p
->type
== bfd_symbol_reloc_link_order
)
3850 /* These are handled below. */
3851 have_link_order_relocs
= true;
3855 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
3861 /* Write out any symbols that we have not already written out. */
3862 aout_link_hash_traverse (aout_hash_table (info
),
3863 aout_link_write_other_symbol
,
3866 /* Now handle any relocs we were asked to create by the linker.
3867 These did not come from any input file. We must do these after
3868 we have written out all the symbols, so that we know the symbol
3870 if (have_link_order_relocs
)
3872 for (o
= abfd
->sections
; o
!= (asection
*) NULL
; o
= o
->next
)
3874 for (p
= o
->link_order_head
;
3875 p
!= (struct bfd_link_order
*) NULL
;
3878 if (p
->type
== bfd_section_reloc_link_order
3879 || p
->type
== bfd_symbol_reloc_link_order
)
3881 if (! aout_link_reloc_link_order (&aout_info
, o
, p
))
3888 if (aout_info
.contents
!= NULL
)
3890 free (aout_info
.contents
);
3891 aout_info
.contents
= NULL
;
3893 if (aout_info
.relocs
!= NULL
)
3895 free (aout_info
.relocs
);
3896 aout_info
.relocs
= NULL
;
3898 if (aout_info
.symbol_map
!= NULL
)
3900 free (aout_info
.symbol_map
);
3901 aout_info
.symbol_map
= NULL
;
3903 if (aout_info
.output_syms
!= NULL
)
3905 free (aout_info
.output_syms
);
3906 aout_info
.output_syms
= NULL
;
3908 if (includes_hash_initialized
)
3910 bfd_hash_table_free (&aout_info
.includes
.root
);
3911 includes_hash_initialized
= false;
3914 /* Finish up any dynamic linking we may be doing. */
3915 if (aout_backend_info (abfd
)->finish_dynamic_link
!= NULL
)
3917 if (! (*aout_backend_info (abfd
)->finish_dynamic_link
) (abfd
, info
))
3921 /* Update the header information. */
3922 abfd
->symcount
= obj_aout_external_sym_count (abfd
);
3923 exec_hdr (abfd
)->a_syms
= abfd
->symcount
* EXTERNAL_NLIST_SIZE
;
3924 obj_str_filepos (abfd
) = obj_sym_filepos (abfd
) + exec_hdr (abfd
)->a_syms
;
3925 obj_textsec (abfd
)->reloc_count
=
3926 exec_hdr (abfd
)->a_trsize
/ obj_reloc_entry_size (abfd
);
3927 obj_datasec (abfd
)->reloc_count
=
3928 exec_hdr (abfd
)->a_drsize
/ obj_reloc_entry_size (abfd
);
3930 /* Write out the string table, unless there are no symbols. */
3931 if (abfd
->symcount
> 0)
3933 if (bfd_seek (abfd
, obj_str_filepos (abfd
), SEEK_SET
) != 0
3934 || ! emit_stringtab (abfd
, aout_info
.strtab
))
3937 else if (obj_textsec (abfd
)->reloc_count
== 0
3938 && obj_datasec (abfd
)->reloc_count
== 0)
3944 (obj_datasec (abfd
)->filepos
3945 + exec_hdr (abfd
)->a_data
3948 || bfd_write (&b
, 1, 1, abfd
) != 1)
3955 if (aout_info
.contents
!= NULL
)
3956 free (aout_info
.contents
);
3957 if (aout_info
.relocs
!= NULL
)
3958 free (aout_info
.relocs
);
3959 if (aout_info
.symbol_map
!= NULL
)
3960 free (aout_info
.symbol_map
);
3961 if (aout_info
.output_syms
!= NULL
)
3962 free (aout_info
.output_syms
);
3963 if (includes_hash_initialized
)
3964 bfd_hash_table_free (&aout_info
.includes
.root
);
3968 /* Link an a.out input BFD into the output file. */
3971 aout_link_input_bfd (finfo
, input_bfd
)
3972 struct aout_final_link_info
*finfo
;
3975 bfd_size_type sym_count
;
3977 BFD_ASSERT (bfd_get_format (input_bfd
) == bfd_object
);
3979 /* If this is a dynamic object, it may need special handling. */
3980 if ((input_bfd
->flags
& DYNAMIC
) != 0
3981 && aout_backend_info (input_bfd
)->link_dynamic_object
!= NULL
)
3983 return ((*aout_backend_info (input_bfd
)->link_dynamic_object
)
3984 (finfo
->info
, input_bfd
));
3987 /* Get the symbols. We probably have them already, unless
3988 finfo->info->keep_memory is false. */
3989 if (! aout_get_external_symbols (input_bfd
))
3992 sym_count
= obj_aout_external_sym_count (input_bfd
);
3994 /* Write out the symbols and get a map of the new indices. The map
3995 is placed into finfo->symbol_map. */
3996 if (! aout_link_write_symbols (finfo
, input_bfd
))
3999 /* Relocate and write out the sections. These functions use the
4000 symbol map created by aout_link_write_symbols. The linker_mark
4001 field will be set if these sections are to be included in the
4002 link, which will normally be the case. */
4003 if (obj_textsec (input_bfd
)->linker_mark
)
4005 if (! aout_link_input_section (finfo
, input_bfd
,
4006 obj_textsec (input_bfd
),
4008 exec_hdr (input_bfd
)->a_trsize
))
4011 if (obj_datasec (input_bfd
)->linker_mark
)
4013 if (! aout_link_input_section (finfo
, input_bfd
,
4014 obj_datasec (input_bfd
),
4016 exec_hdr (input_bfd
)->a_drsize
))
4020 /* If we are not keeping memory, we don't need the symbols any
4021 longer. We still need them if we are keeping memory, because the
4022 strings in the hash table point into them. */
4023 if (! finfo
->info
->keep_memory
)
4025 if (! aout_link_free_symbols (input_bfd
))
4032 /* Adjust and write out the symbols for an a.out file. Set the new
4033 symbol indices into a symbol_map. */
4036 aout_link_write_symbols (finfo
, input_bfd
)
4037 struct aout_final_link_info
*finfo
;
4041 bfd_size_type sym_count
;
4043 enum bfd_link_strip strip
;
4044 enum bfd_link_discard discard
;
4045 struct external_nlist
*outsym
;
4046 bfd_size_type strtab_index
;
4047 register struct external_nlist
*sym
;
4048 struct external_nlist
*sym_end
;
4049 struct aout_link_hash_entry
**sym_hash
;
4054 output_bfd
= finfo
->output_bfd
;
4055 sym_count
= obj_aout_external_sym_count (input_bfd
);
4056 strings
= obj_aout_external_strings (input_bfd
);
4057 strip
= finfo
->info
->strip
;
4058 discard
= finfo
->info
->discard
;
4059 outsym
= finfo
->output_syms
;
4061 /* First write out a symbol for this object file, unless we are
4062 discarding such symbols. */
4063 if (strip
!= strip_all
4064 && (strip
!= strip_some
4065 || bfd_hash_lookup (finfo
->info
->keep_hash
, input_bfd
->filename
,
4066 false, false) != NULL
)
4067 && discard
!= discard_all
)
4069 bfd_h_put_8 (output_bfd
, N_TEXT
, outsym
->e_type
);
4070 bfd_h_put_8 (output_bfd
, 0, outsym
->e_other
);
4071 bfd_h_put_16 (output_bfd
, (bfd_vma
) 0, outsym
->e_desc
);
4072 strtab_index
= add_to_stringtab (output_bfd
, finfo
->strtab
,
4073 input_bfd
->filename
, false);
4074 if (strtab_index
== (bfd_size_type
) -1)
4076 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4077 PUT_WORD (output_bfd
,
4078 (bfd_get_section_vma (output_bfd
,
4079 obj_textsec (input_bfd
)->output_section
)
4080 + obj_textsec (input_bfd
)->output_offset
),
4082 ++obj_aout_external_sym_count (output_bfd
);
4088 sym
= obj_aout_external_syms (input_bfd
);
4089 sym_end
= sym
+ sym_count
;
4090 sym_hash
= obj_aout_sym_hashes (input_bfd
);
4091 symbol_map
= finfo
->symbol_map
;
4092 memset (symbol_map
, 0, sym_count
* sizeof *symbol_map
);
4093 for (; sym
< sym_end
; sym
++, sym_hash
++, symbol_map
++)
4097 struct aout_link_hash_entry
*h
;
4103 /* We set *symbol_map to 0 above for all symbols. If it has
4104 already been set to -1 for this symbol, it means that we are
4105 discarding it because it appears in a duplicate header file.
4106 See the N_BINCL code below. */
4107 if (*symbol_map
== -1)
4110 /* Initialize *symbol_map to -1, which means that the symbol was
4111 not copied into the output file. We will change it later if
4112 we do copy the symbol over. */
4115 type
= bfd_h_get_8 (input_bfd
, sym
->e_type
);
4116 name
= strings
+ GET_WORD (input_bfd
, sym
->e_strx
);
4122 /* Pass this symbol through. It is the target of an
4123 indirect or warning symbol. */
4124 val
= GET_WORD (input_bfd
, sym
->e_value
);
4129 /* Skip this symbol, which is the target of an indirect
4130 symbol that we have changed to no longer be an indirect
4137 struct aout_link_hash_entry
*hresolve
;
4139 /* We have saved the hash table entry for this symbol, if
4140 there is one. Note that we could just look it up again
4141 in the hash table, provided we first check that it is an
4145 /* Use the name from the hash table, in case the symbol was
4148 name
= h
->root
.root
.string
;
4150 /* If this is an indirect or warning symbol, then change
4151 hresolve to the base symbol. We also change *sym_hash so
4152 that the relocation routines relocate against the real
4155 if (h
!= (struct aout_link_hash_entry
*) NULL
4156 && (h
->root
.type
== bfd_link_hash_indirect
4157 || h
->root
.type
== bfd_link_hash_warning
))
4159 hresolve
= (struct aout_link_hash_entry
*) h
->root
.u
.i
.link
;
4160 while (hresolve
->root
.type
== bfd_link_hash_indirect
4161 || hresolve
->root
.type
== bfd_link_hash_warning
)
4162 hresolve
= ((struct aout_link_hash_entry
*)
4163 hresolve
->root
.u
.i
.link
);
4164 *sym_hash
= hresolve
;
4167 /* If the symbol has already been written out, skip it. */
4168 if (h
!= (struct aout_link_hash_entry
*) NULL
4169 && h
->root
.type
!= bfd_link_hash_warning
4172 if ((type
& N_TYPE
) == N_INDR
4173 || type
== N_WARNING
)
4175 *symbol_map
= h
->indx
;
4179 /* See if we are stripping this symbol. */
4185 case strip_debugger
:
4186 if ((type
& N_STAB
) != 0)
4190 if (bfd_hash_lookup (finfo
->info
->keep_hash
, name
, false, false)
4200 if (h
!= (struct aout_link_hash_entry
*) NULL
)
4205 /* Get the value of the symbol. */
4206 if ((type
& N_TYPE
) == N_TEXT
4208 symsec
= obj_textsec (input_bfd
);
4209 else if ((type
& N_TYPE
) == N_DATA
4211 symsec
= obj_datasec (input_bfd
);
4212 else if ((type
& N_TYPE
) == N_BSS
4214 symsec
= obj_bsssec (input_bfd
);
4215 else if ((type
& N_TYPE
) == N_ABS
4217 symsec
= bfd_abs_section_ptr
;
4218 else if (((type
& N_TYPE
) == N_INDR
4219 && (hresolve
== (struct aout_link_hash_entry
*) NULL
4220 || (hresolve
->root
.type
!= bfd_link_hash_defined
4221 && hresolve
->root
.type
!= bfd_link_hash_defweak
4222 && hresolve
->root
.type
!= bfd_link_hash_common
)))
4223 || type
== N_WARNING
)
4225 /* Pass the next symbol through unchanged. The
4226 condition above for indirect symbols is so that if
4227 the indirect symbol was defined, we output it with
4228 the correct definition so the debugger will
4231 val
= GET_WORD (input_bfd
, sym
->e_value
);
4234 else if ((type
& N_STAB
) != 0)
4236 val
= GET_WORD (input_bfd
, sym
->e_value
);
4241 /* If we get here with an indirect symbol, it means that
4242 we are outputting it with a real definition. In such
4243 a case we do not want to output the next symbol,
4244 which is the target of the indirection. */
4245 if ((type
& N_TYPE
) == N_INDR
)
4250 /* We need to get the value from the hash table. We use
4251 hresolve so that if we have defined an indirect
4252 symbol we output the final definition. */
4253 if (h
== (struct aout_link_hash_entry
*) NULL
)
4255 switch (type
& N_TYPE
)
4258 symsec
= obj_textsec (input_bfd
);
4261 symsec
= obj_datasec (input_bfd
);
4264 symsec
= obj_bsssec (input_bfd
);
4267 symsec
= bfd_abs_section_ptr
;
4274 else if (hresolve
->root
.type
== bfd_link_hash_defined
4275 || hresolve
->root
.type
== bfd_link_hash_defweak
)
4277 asection
*input_section
;
4278 asection
*output_section
;
4280 /* This case usually means a common symbol which was
4281 turned into a defined symbol. */
4282 input_section
= hresolve
->root
.u
.def
.section
;
4283 output_section
= input_section
->output_section
;
4284 BFD_ASSERT (bfd_is_abs_section (output_section
)
4285 || output_section
->owner
== output_bfd
);
4286 val
= (hresolve
->root
.u
.def
.value
4287 + bfd_get_section_vma (output_bfd
, output_section
)
4288 + input_section
->output_offset
);
4290 /* Get the correct type based on the section. If
4291 this is a constructed set, force it to be
4292 globally visible. */
4301 if (output_section
== obj_textsec (output_bfd
))
4302 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4305 else if (output_section
== obj_datasec (output_bfd
))
4306 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4309 else if (output_section
== obj_bsssec (output_bfd
))
4310 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4314 type
|= (hresolve
->root
.type
== bfd_link_hash_defined
4318 else if (hresolve
->root
.type
== bfd_link_hash_common
)
4319 val
= hresolve
->root
.u
.c
.size
;
4320 else if (hresolve
->root
.type
== bfd_link_hash_undefweak
)
4328 if (symsec
!= (asection
*) NULL
)
4329 val
= (symsec
->output_section
->vma
4330 + symsec
->output_offset
4331 + (GET_WORD (input_bfd
, sym
->e_value
)
4334 /* If this is a global symbol set the written flag, and if
4335 it is a local symbol see if we should discard it. */
4336 if (h
!= (struct aout_link_hash_entry
*) NULL
)
4339 h
->indx
= obj_aout_external_sym_count (output_bfd
);
4341 else if ((type
& N_TYPE
) != N_SETT
4342 && (type
& N_TYPE
) != N_SETD
4343 && (type
& N_TYPE
) != N_SETB
4344 && (type
& N_TYPE
) != N_SETA
)
4349 case discard_sec_merge
:
4352 if ((type
& N_STAB
) == 0
4353 && bfd_is_local_label_name (input_bfd
, name
))
4367 /* An N_BINCL symbol indicates the start of the stabs
4368 entries for a header file. We need to scan ahead to the
4369 next N_EINCL symbol, ignoring nesting, adding up all the
4370 characters in the symbol names, not including the file
4371 numbers in types (the first number after an open
4373 if (type
== N_BINCL
)
4375 struct external_nlist
*incl_sym
;
4377 struct aout_link_includes_entry
*incl_entry
;
4378 struct aout_link_includes_totals
*t
;
4382 for (incl_sym
= sym
+ 1; incl_sym
< sym_end
; incl_sym
++)
4386 incl_type
= bfd_h_get_8 (input_bfd
, incl_sym
->e_type
);
4387 if (incl_type
== N_EINCL
)
4393 else if (incl_type
== N_BINCL
)
4399 s
= strings
+ GET_WORD (input_bfd
, incl_sym
->e_strx
);
4400 for (; *s
!= '\0'; s
++)
4405 /* Skip the file number. */
4407 while (isdigit ((unsigned char) *s
))
4415 /* If we have already included a header file with the
4416 same value, then replace this one with an N_EXCL
4418 copy
= ! finfo
->info
->keep_memory
;
4419 incl_entry
= aout_link_includes_lookup (&finfo
->includes
,
4421 if (incl_entry
== NULL
)
4423 for (t
= incl_entry
->totals
; t
!= NULL
; t
= t
->next
)
4424 if (t
->total
== val
)
4428 /* This is the first time we have seen this header
4429 file with this set of stabs strings. */
4430 t
= ((struct aout_link_includes_totals
*)
4431 bfd_hash_allocate (&finfo
->includes
.root
,
4436 t
->next
= incl_entry
->totals
;
4437 incl_entry
->totals
= t
;
4443 /* This is a duplicate header file. We must change
4444 it to be an N_EXCL entry, and mark all the
4445 included symbols to prevent outputting them. */
4449 for (incl_sym
= sym
+ 1, incl_map
= symbol_map
+ 1;
4451 incl_sym
++, incl_map
++)
4455 incl_type
= bfd_h_get_8 (input_bfd
, incl_sym
->e_type
);
4456 if (incl_type
== N_EINCL
)
4465 else if (incl_type
== N_BINCL
)
4474 /* Copy this symbol into the list of symbols we are going to
4476 bfd_h_put_8 (output_bfd
, type
, outsym
->e_type
);
4477 bfd_h_put_8 (output_bfd
, bfd_h_get_8 (input_bfd
, sym
->e_other
),
4479 bfd_h_put_16 (output_bfd
, bfd_h_get_16 (input_bfd
, sym
->e_desc
),
4482 if (! finfo
->info
->keep_memory
)
4484 /* name points into a string table which we are going to
4485 free. If there is a hash table entry, use that string.
4486 Otherwise, copy name into memory. */
4487 if (h
!= (struct aout_link_hash_entry
*) NULL
)
4488 name
= h
->root
.root
.string
;
4492 strtab_index
= add_to_stringtab (output_bfd
, finfo
->strtab
,
4494 if (strtab_index
== (bfd_size_type
) -1)
4496 PUT_WORD (output_bfd
, strtab_index
, outsym
->e_strx
);
4497 PUT_WORD (output_bfd
, val
, outsym
->e_value
);
4498 *symbol_map
= obj_aout_external_sym_count (output_bfd
);
4499 ++obj_aout_external_sym_count (output_bfd
);
4503 /* Write out the output symbols we have just constructed. */
4504 if (outsym
> finfo
->output_syms
)
4506 bfd_size_type outsym_count
;
4508 if (bfd_seek (output_bfd
, finfo
->symoff
, SEEK_SET
) != 0)
4510 outsym_count
= outsym
- finfo
->output_syms
;
4511 if (bfd_write ((PTR
) finfo
->output_syms
,
4512 (bfd_size_type
) EXTERNAL_NLIST_SIZE
,
4513 (bfd_size_type
) outsym_count
, output_bfd
)
4514 != outsym_count
* EXTERNAL_NLIST_SIZE
)
4516 finfo
->symoff
+= outsym_count
* EXTERNAL_NLIST_SIZE
;
4522 /* Write out a symbol that was not associated with an a.out input
4526 aout_link_write_other_symbol (h
, data
)
4527 struct aout_link_hash_entry
*h
;
4530 struct aout_final_link_info
*finfo
= (struct aout_final_link_info
*) data
;
4534 struct external_nlist outsym
;
4537 output_bfd
= finfo
->output_bfd
;
4539 if (aout_backend_info (output_bfd
)->write_dynamic_symbol
!= NULL
)
4541 if (! ((*aout_backend_info (output_bfd
)->write_dynamic_symbol
)
4542 (output_bfd
, finfo
->info
, h
)))
4544 /* FIXME: No way to handle errors. */
4554 /* An indx of -2 means the symbol must be written. */
4556 && (finfo
->info
->strip
== strip_all
4557 || (finfo
->info
->strip
== strip_some
4558 && bfd_hash_lookup (finfo
->info
->keep_hash
, h
->root
.root
.string
,
4559 false, false) == NULL
)))
4562 switch (h
->root
.type
)
4566 /* Avoid variable not initialized warnings. */
4568 case bfd_link_hash_new
:
4569 /* This can happen for set symbols when sets are not being
4572 case bfd_link_hash_undefined
:
4573 type
= N_UNDF
| N_EXT
;
4576 case bfd_link_hash_defined
:
4577 case bfd_link_hash_defweak
:
4581 sec
= h
->root
.u
.def
.section
->output_section
;
4582 BFD_ASSERT (bfd_is_abs_section (sec
)
4583 || sec
->owner
== output_bfd
);
4584 if (sec
== obj_textsec (output_bfd
))
4585 type
= h
->root
.type
== bfd_link_hash_defined
? N_TEXT
: N_WEAKT
;
4586 else if (sec
== obj_datasec (output_bfd
))
4587 type
= h
->root
.type
== bfd_link_hash_defined
? N_DATA
: N_WEAKD
;
4588 else if (sec
== obj_bsssec (output_bfd
))
4589 type
= h
->root
.type
== bfd_link_hash_defined
? N_BSS
: N_WEAKB
;
4591 type
= h
->root
.type
== bfd_link_hash_defined
? N_ABS
: N_WEAKA
;
4593 val
= (h
->root
.u
.def
.value
4595 + h
->root
.u
.def
.section
->output_offset
);
4598 case bfd_link_hash_common
:
4599 type
= N_UNDF
| N_EXT
;
4600 val
= h
->root
.u
.c
.size
;
4602 case bfd_link_hash_undefweak
:
4605 case bfd_link_hash_indirect
:
4606 case bfd_link_hash_warning
:
4607 /* FIXME: Ignore these for now. The circumstances under which
4608 they should be written out are not clear to me. */
4612 bfd_h_put_8 (output_bfd
, type
, outsym
.e_type
);
4613 bfd_h_put_8 (output_bfd
, 0, outsym
.e_other
);
4614 bfd_h_put_16 (output_bfd
, 0, outsym
.e_desc
);
4615 indx
= add_to_stringtab (output_bfd
, finfo
->strtab
, h
->root
.root
.string
,
4617 if (indx
== (bfd_size_type
) -1)
4619 /* FIXME: No way to handle errors. */
4622 PUT_WORD (output_bfd
, indx
, outsym
.e_strx
);
4623 PUT_WORD (output_bfd
, val
, outsym
.e_value
);
4625 if (bfd_seek (output_bfd
, finfo
->symoff
, SEEK_SET
) != 0
4626 || bfd_write ((PTR
) &outsym
, (bfd_size_type
) EXTERNAL_NLIST_SIZE
,
4627 (bfd_size_type
) 1, output_bfd
) != EXTERNAL_NLIST_SIZE
)
4629 /* FIXME: No way to handle errors. */
4633 finfo
->symoff
+= EXTERNAL_NLIST_SIZE
;
4634 h
->indx
= obj_aout_external_sym_count (output_bfd
);
4635 ++obj_aout_external_sym_count (output_bfd
);
4640 /* Link an a.out section into the output file. */
4643 aout_link_input_section (finfo
, input_bfd
, input_section
, reloff_ptr
,
4645 struct aout_final_link_info
*finfo
;
4647 asection
*input_section
;
4648 file_ptr
*reloff_ptr
;
4649 bfd_size_type rel_size
;
4651 bfd_size_type input_size
;
4654 /* Get the section contents. */
4655 input_size
= bfd_section_size (input_bfd
, input_section
);
4656 if (! bfd_get_section_contents (input_bfd
, input_section
,
4657 (PTR
) finfo
->contents
,
4658 (file_ptr
) 0, input_size
))
4661 /* Read in the relocs if we haven't already done it. */
4662 if (aout_section_data (input_section
) != NULL
4663 && aout_section_data (input_section
)->relocs
!= NULL
)
4664 relocs
= aout_section_data (input_section
)->relocs
;
4667 relocs
= finfo
->relocs
;
4670 if (bfd_seek (input_bfd
, input_section
->rel_filepos
, SEEK_SET
) != 0
4671 || bfd_read (relocs
, 1, rel_size
, input_bfd
) != rel_size
)
4676 /* Relocate the section contents. */
4677 if (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
)
4679 if (! aout_link_input_section_std (finfo
, input_bfd
, input_section
,
4680 (struct reloc_std_external
*) relocs
,
4681 rel_size
, finfo
->contents
))
4686 if (! aout_link_input_section_ext (finfo
, input_bfd
, input_section
,
4687 (struct reloc_ext_external
*) relocs
,
4688 rel_size
, finfo
->contents
))
4692 /* Write out the section contents. */
4693 if (! bfd_set_section_contents (finfo
->output_bfd
,
4694 input_section
->output_section
,
4695 (PTR
) finfo
->contents
,
4696 input_section
->output_offset
,
4700 /* If we are producing relocateable output, the relocs were
4701 modified, and we now write them out. */
4702 if (finfo
->info
->relocateable
&& rel_size
> 0)
4704 if (bfd_seek (finfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0)
4706 if (bfd_write (relocs
, (bfd_size_type
) 1, rel_size
, finfo
->output_bfd
)
4709 *reloff_ptr
+= rel_size
;
4711 /* Assert that the relocs have not run into the symbols, and
4712 that if these are the text relocs they have not run into the
4714 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (finfo
->output_bfd
)
4715 && (reloff_ptr
!= &finfo
->treloff
4717 <= obj_datasec (finfo
->output_bfd
)->rel_filepos
)));
4723 /* Get the section corresponding to a reloc index. */
4725 static INLINE asection
*
4726 aout_reloc_index_to_section (abfd
, indx
)
4730 switch (indx
& N_TYPE
)
4733 return obj_textsec (abfd
);
4735 return obj_datasec (abfd
);
4737 return obj_bsssec (abfd
);
4740 return bfd_abs_section_ptr
;
4748 /* Relocate an a.out section using standard a.out relocs. */
4751 aout_link_input_section_std (finfo
, input_bfd
, input_section
, relocs
,
4753 struct aout_final_link_info
*finfo
;
4755 asection
*input_section
;
4756 struct reloc_std_external
*relocs
;
4757 bfd_size_type rel_size
;
4760 boolean (*check_dynamic_reloc
) PARAMS ((struct bfd_link_info
*,
4762 struct aout_link_hash_entry
*,
4763 PTR
, bfd_byte
*, boolean
*,
4766 boolean relocateable
;
4767 struct external_nlist
*syms
;
4769 struct aout_link_hash_entry
**sym_hashes
;
4771 bfd_size_type reloc_count
;
4772 register struct reloc_std_external
*rel
;
4773 struct reloc_std_external
*rel_end
;
4775 output_bfd
= finfo
->output_bfd
;
4776 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
4778 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_STD_SIZE
);
4779 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
4780 == output_bfd
->xvec
->header_byteorder
);
4782 relocateable
= finfo
->info
->relocateable
;
4783 syms
= obj_aout_external_syms (input_bfd
);
4784 strings
= obj_aout_external_strings (input_bfd
);
4785 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
4786 symbol_map
= finfo
->symbol_map
;
4788 reloc_count
= rel_size
/ RELOC_STD_SIZE
;
4790 rel_end
= rel
+ reloc_count
;
4791 for (; rel
< rel_end
; rel
++)
4798 reloc_howto_type
*howto
;
4799 struct aout_link_hash_entry
*h
= NULL
;
4801 bfd_reloc_status_type r
;
4803 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
4805 #ifdef MY_reloc_howto
4806 howto
= MY_reloc_howto(input_bfd
, rel
, r_index
, r_extern
, r_pcrel
);
4812 unsigned int howto_idx
;
4814 if (bfd_header_big_endian (input_bfd
))
4816 r_index
= ((rel
->r_index
[0] << 16)
4817 | (rel
->r_index
[1] << 8)
4819 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_BIG
));
4820 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_BIG
));
4821 r_baserel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_BASEREL_BIG
));
4822 r_jmptable
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_JMPTABLE_BIG
));
4823 r_relative
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_RELATIVE_BIG
));
4824 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_BIG
)
4825 >> RELOC_STD_BITS_LENGTH_SH_BIG
);
4829 r_index
= ((rel
->r_index
[2] << 16)
4830 | (rel
->r_index
[1] << 8)
4832 r_extern
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_EXTERN_LITTLE
));
4833 r_pcrel
= (0 != (rel
->r_type
[0] & RELOC_STD_BITS_PCREL_LITTLE
));
4834 r_baserel
= (0 != (rel
->r_type
[0]
4835 & RELOC_STD_BITS_BASEREL_LITTLE
));
4836 r_jmptable
= (0 != (rel
->r_type
[0]
4837 & RELOC_STD_BITS_JMPTABLE_LITTLE
));
4838 r_relative
= (0 != (rel
->r_type
[0]
4839 & RELOC_STD_BITS_RELATIVE_LITTLE
));
4840 r_length
= ((rel
->r_type
[0] & RELOC_STD_BITS_LENGTH_LITTLE
)
4841 >> RELOC_STD_BITS_LENGTH_SH_LITTLE
);
4844 howto_idx
= (r_length
+ 4 * r_pcrel
+ 8 * r_baserel
4845 + 16 * r_jmptable
+ 32 * r_relative
);
4846 BFD_ASSERT (howto_idx
< TABLE_SIZE (howto_table_std
));
4847 howto
= howto_table_std
+ howto_idx
;
4853 /* We are generating a relocateable output file, and must
4854 modify the reloc accordingly. */
4857 /* If we know the symbol this relocation is against,
4858 convert it into a relocation against a section. This
4859 is what the native linker does. */
4860 h
= sym_hashes
[r_index
];
4861 if (h
!= (struct aout_link_hash_entry
*) NULL
4862 && (h
->root
.type
== bfd_link_hash_defined
4863 || h
->root
.type
== bfd_link_hash_defweak
))
4865 asection
*output_section
;
4867 /* Change the r_extern value. */
4868 if (bfd_header_big_endian (output_bfd
))
4869 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_BIG
;
4871 rel
->r_type
[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE
;
4873 /* Compute a new r_index. */
4874 output_section
= h
->root
.u
.def
.section
->output_section
;
4875 if (output_section
== obj_textsec (output_bfd
))
4877 else if (output_section
== obj_datasec (output_bfd
))
4879 else if (output_section
== obj_bsssec (output_bfd
))
4884 /* Add the symbol value and the section VMA to the
4885 addend stored in the contents. */
4886 relocation
= (h
->root
.u
.def
.value
4887 + output_section
->vma
4888 + h
->root
.u
.def
.section
->output_offset
);
4892 /* We must change r_index according to the symbol
4894 r_index
= symbol_map
[r_index
];
4900 /* We decided to strip this symbol, but it
4901 turns out that we can't. Note that we
4902 lose the other and desc information here.
4903 I don't think that will ever matter for a
4909 if (! aout_link_write_other_symbol (h
,
4919 name
= strings
+ GET_WORD (input_bfd
,
4920 syms
[r_index
].e_strx
);
4921 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
4922 (finfo
->info
, name
, input_bfd
, input_section
,
4932 /* Write out the new r_index value. */
4933 if (bfd_header_big_endian (output_bfd
))
4935 rel
->r_index
[0] = r_index
>> 16;
4936 rel
->r_index
[1] = r_index
>> 8;
4937 rel
->r_index
[2] = r_index
;
4941 rel
->r_index
[2] = r_index
>> 16;
4942 rel
->r_index
[1] = r_index
>> 8;
4943 rel
->r_index
[0] = r_index
;
4950 /* This is a relocation against a section. We must
4951 adjust by the amount that the section moved. */
4952 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
4953 relocation
= (section
->output_section
->vma
4954 + section
->output_offset
4958 /* Change the address of the relocation. */
4959 PUT_WORD (output_bfd
,
4960 r_addr
+ input_section
->output_offset
,
4963 /* Adjust a PC relative relocation by removing the reference
4964 to the original address in the section and including the
4965 reference to the new address. */
4967 relocation
-= (input_section
->output_section
->vma
4968 + input_section
->output_offset
4969 - input_section
->vma
);
4971 #ifdef MY_relocatable_reloc
4972 MY_relocatable_reloc (howto
, output_bfd
, rel
, relocation
, r_addr
);
4975 if (relocation
== 0)
4978 r
= MY_relocate_contents (howto
,
4979 input_bfd
, relocation
,
4986 /* We are generating an executable, and must do a full
4992 h
= sym_hashes
[r_index
];
4994 if (h
!= (struct aout_link_hash_entry
*) NULL
4995 && (h
->root
.type
== bfd_link_hash_defined
4996 || h
->root
.type
== bfd_link_hash_defweak
))
4998 relocation
= (h
->root
.u
.def
.value
4999 + h
->root
.u
.def
.section
->output_section
->vma
5000 + h
->root
.u
.def
.section
->output_offset
);
5002 else if (h
!= (struct aout_link_hash_entry
*) NULL
5003 && h
->root
.type
== bfd_link_hash_undefweak
)
5015 section
= aout_reloc_index_to_section (input_bfd
, r_index
);
5016 relocation
= (section
->output_section
->vma
5017 + section
->output_offset
5020 relocation
+= input_section
->vma
;
5023 if (check_dynamic_reloc
!= NULL
)
5027 if (! ((*check_dynamic_reloc
)
5028 (finfo
->info
, input_bfd
, input_section
, h
,
5029 (PTR
) rel
, contents
, &skip
, &relocation
)))
5035 /* Now warn if a global symbol is undefined. We could not
5036 do this earlier, because check_dynamic_reloc might want
5037 to skip this reloc. */
5038 if (hundef
&& ! finfo
->info
->shared
&& ! r_baserel
)
5043 name
= h
->root
.root
.string
;
5045 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
5046 if (! ((*finfo
->info
->callbacks
->undefined_symbol
)
5047 (finfo
->info
, name
, input_bfd
, input_section
,
5052 r
= MY_final_link_relocate (howto
,
5053 input_bfd
, input_section
,
5054 contents
, r_addr
, relocation
,
5058 if (r
!= bfd_reloc_ok
)
5063 case bfd_reloc_outofrange
:
5065 case bfd_reloc_overflow
:
5070 name
= h
->root
.root
.string
;
5072 name
= strings
+ GET_WORD (input_bfd
,
5073 syms
[r_index
].e_strx
);
5078 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
5079 name
= bfd_section_name (input_bfd
, s
);
5081 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
5082 (finfo
->info
, name
, howto
->name
,
5083 (bfd_vma
) 0, input_bfd
, input_section
, r_addr
)))
5094 /* Relocate an a.out section using extended a.out relocs. */
5097 aout_link_input_section_ext (finfo
, input_bfd
, input_section
, relocs
,
5099 struct aout_final_link_info
*finfo
;
5101 asection
*input_section
;
5102 struct reloc_ext_external
*relocs
;
5103 bfd_size_type rel_size
;
5106 boolean (*check_dynamic_reloc
) PARAMS ((struct bfd_link_info
*,
5108 struct aout_link_hash_entry
*,
5109 PTR
, bfd_byte
*, boolean
*,
5112 boolean relocateable
;
5113 struct external_nlist
*syms
;
5115 struct aout_link_hash_entry
**sym_hashes
;
5117 bfd_size_type reloc_count
;
5118 register struct reloc_ext_external
*rel
;
5119 struct reloc_ext_external
*rel_end
;
5121 output_bfd
= finfo
->output_bfd
;
5122 check_dynamic_reloc
= aout_backend_info (output_bfd
)->check_dynamic_reloc
;
5124 BFD_ASSERT (obj_reloc_entry_size (input_bfd
) == RELOC_EXT_SIZE
);
5125 BFD_ASSERT (input_bfd
->xvec
->header_byteorder
5126 == output_bfd
->xvec
->header_byteorder
);
5128 relocateable
= finfo
->info
->relocateable
;
5129 syms
= obj_aout_external_syms (input_bfd
);
5130 strings
= obj_aout_external_strings (input_bfd
);
5131 sym_hashes
= obj_aout_sym_hashes (input_bfd
);
5132 symbol_map
= finfo
->symbol_map
;
5134 reloc_count
= rel_size
/ RELOC_EXT_SIZE
;
5136 rel_end
= rel
+ reloc_count
;
5137 for (; rel
< rel_end
; rel
++)
5142 unsigned int r_type
;
5144 struct aout_link_hash_entry
*h
= NULL
;
5145 asection
*r_section
= NULL
;
5148 r_addr
= GET_SWORD (input_bfd
, rel
->r_address
);
5150 if (bfd_header_big_endian (input_bfd
))
5152 r_index
= ((rel
->r_index
[0] << 16)
5153 | (rel
->r_index
[1] << 8)
5155 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_BIG
));
5156 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_BIG
)
5157 >> RELOC_EXT_BITS_TYPE_SH_BIG
);
5161 r_index
= ((rel
->r_index
[2] << 16)
5162 | (rel
->r_index
[1] << 8)
5164 r_extern
= (0 != (rel
->r_type
[0] & RELOC_EXT_BITS_EXTERN_LITTLE
));
5165 r_type
= ((rel
->r_type
[0] & RELOC_EXT_BITS_TYPE_LITTLE
)
5166 >> RELOC_EXT_BITS_TYPE_SH_LITTLE
);
5169 r_addend
= GET_SWORD (input_bfd
, rel
->r_addend
);
5171 BFD_ASSERT (r_type
< TABLE_SIZE (howto_table_ext
));
5175 /* We are generating a relocateable output file, and must
5176 modify the reloc accordingly. */
5178 || r_type
== RELOC_BASE10
5179 || r_type
== RELOC_BASE13
5180 || r_type
== RELOC_BASE22
)
5182 /* If we know the symbol this relocation is against,
5183 convert it into a relocation against a section. This
5184 is what the native linker does. */
5185 if (r_type
== RELOC_BASE10
5186 || r_type
== RELOC_BASE13
5187 || r_type
== RELOC_BASE22
)
5190 h
= sym_hashes
[r_index
];
5191 if (h
!= (struct aout_link_hash_entry
*) NULL
5192 && (h
->root
.type
== bfd_link_hash_defined
5193 || h
->root
.type
== bfd_link_hash_defweak
))
5195 asection
*output_section
;
5197 /* Change the r_extern value. */
5198 if (bfd_header_big_endian (output_bfd
))
5199 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_BIG
;
5201 rel
->r_type
[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE
;
5203 /* Compute a new r_index. */
5204 output_section
= h
->root
.u
.def
.section
->output_section
;
5205 if (output_section
== obj_textsec (output_bfd
))
5207 else if (output_section
== obj_datasec (output_bfd
))
5209 else if (output_section
== obj_bsssec (output_bfd
))
5214 /* Add the symbol value and the section VMA to the
5216 relocation
= (h
->root
.u
.def
.value
5217 + output_section
->vma
5218 + h
->root
.u
.def
.section
->output_offset
);
5220 /* Now RELOCATION is the VMA of the final
5221 destination. If this is a PC relative reloc,
5222 then ADDEND is the negative of the source VMA.
5223 We want to set ADDEND to the difference between
5224 the destination VMA and the source VMA, which
5225 means we must adjust RELOCATION by the change in
5226 the source VMA. This is done below. */
5230 /* We must change r_index according to the symbol
5232 r_index
= symbol_map
[r_index
];
5238 /* We decided to strip this symbol, but it
5239 turns out that we can't. Note that we
5240 lose the other and desc information here.
5241 I don't think that will ever matter for a
5247 if (! aout_link_write_other_symbol (h
,
5257 name
= strings
+ GET_WORD (input_bfd
,
5258 syms
[r_index
].e_strx
);
5259 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
5260 (finfo
->info
, name
, input_bfd
, input_section
,
5269 /* If this is a PC relative reloc, then the addend
5270 is the negative of the source VMA. We must
5271 adjust it by the change in the source VMA. This
5275 /* Write out the new r_index value. */
5276 if (bfd_header_big_endian (output_bfd
))
5278 rel
->r_index
[0] = r_index
>> 16;
5279 rel
->r_index
[1] = r_index
>> 8;
5280 rel
->r_index
[2] = r_index
;
5284 rel
->r_index
[2] = r_index
>> 16;
5285 rel
->r_index
[1] = r_index
>> 8;
5286 rel
->r_index
[0] = r_index
;
5291 /* This is a relocation against a section. We must
5292 adjust by the amount that the section moved. */
5293 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
5294 relocation
= (r_section
->output_section
->vma
5295 + r_section
->output_offset
5298 /* If this is a PC relative reloc, then the addend is
5299 the difference in VMA between the destination and the
5300 source. We have just adjusted for the change in VMA
5301 of the destination, so we must also adjust by the
5302 change in VMA of the source. This is done below. */
5305 /* As described above, we must always adjust a PC relative
5306 reloc by the change in VMA of the source. However, if
5307 pcrel_offset is set, then the addend does not include the
5308 location within the section, in which case we don't need
5309 to adjust anything. */
5310 if (howto_table_ext
[r_type
].pc_relative
5311 && ! howto_table_ext
[r_type
].pcrel_offset
)
5312 relocation
-= (input_section
->output_section
->vma
5313 + input_section
->output_offset
5314 - input_section
->vma
);
5316 /* Change the addend if necessary. */
5317 if (relocation
!= 0)
5318 PUT_WORD (output_bfd
, r_addend
+ relocation
, rel
->r_addend
);
5320 /* Change the address of the relocation. */
5321 PUT_WORD (output_bfd
,
5322 r_addr
+ input_section
->output_offset
,
5328 bfd_reloc_status_type r
;
5330 /* We are generating an executable, and must do a full
5336 h
= sym_hashes
[r_index
];
5338 if (h
!= (struct aout_link_hash_entry
*) NULL
5339 && (h
->root
.type
== bfd_link_hash_defined
5340 || h
->root
.type
== bfd_link_hash_defweak
))
5342 relocation
= (h
->root
.u
.def
.value
5343 + h
->root
.u
.def
.section
->output_section
->vma
5344 + h
->root
.u
.def
.section
->output_offset
);
5346 else if (h
!= (struct aout_link_hash_entry
*) NULL
5347 && h
->root
.type
== bfd_link_hash_undefweak
)
5355 else if (r_type
== RELOC_BASE10
5356 || r_type
== RELOC_BASE13
5357 || r_type
== RELOC_BASE22
)
5359 struct external_nlist
*sym
;
5362 /* For base relative relocs, r_index is always an index
5363 into the symbol table, even if r_extern is 0. */
5364 sym
= syms
+ r_index
;
5365 type
= bfd_h_get_8 (input_bfd
, sym
->e_type
);
5366 if ((type
& N_TYPE
) == N_TEXT
5368 r_section
= obj_textsec (input_bfd
);
5369 else if ((type
& N_TYPE
) == N_DATA
5371 r_section
= obj_datasec (input_bfd
);
5372 else if ((type
& N_TYPE
) == N_BSS
5374 r_section
= obj_bsssec (input_bfd
);
5375 else if ((type
& N_TYPE
) == N_ABS
5377 r_section
= bfd_abs_section_ptr
;
5380 relocation
= (r_section
->output_section
->vma
5381 + r_section
->output_offset
5382 + (GET_WORD (input_bfd
, sym
->e_value
)
5387 r_section
= aout_reloc_index_to_section (input_bfd
, r_index
);
5389 /* If this is a PC relative reloc, then R_ADDEND is the
5390 difference between the two vmas, or
5391 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5393 old_dest_sec == section->vma
5395 old_src_sec == input_section->vma
5397 old_src_off == r_addr
5399 _bfd_final_link_relocate expects RELOCATION +
5400 R_ADDEND to be the VMA of the destination minus
5401 r_addr (the minus r_addr is because this relocation
5402 is not pcrel_offset, which is a bit confusing and
5403 should, perhaps, be changed), or
5406 new_dest_sec == output_section->vma + output_offset
5407 We arrange for this to happen by setting RELOCATION to
5408 new_dest_sec + old_src_sec - old_dest_sec
5410 If this is not a PC relative reloc, then R_ADDEND is
5411 simply the VMA of the destination, so we set
5412 RELOCATION to the change in the destination VMA, or
5413 new_dest_sec - old_dest_sec
5415 relocation
= (r_section
->output_section
->vma
5416 + r_section
->output_offset
5418 if (howto_table_ext
[r_type
].pc_relative
)
5419 relocation
+= input_section
->vma
;
5422 if (check_dynamic_reloc
!= NULL
)
5426 if (! ((*check_dynamic_reloc
)
5427 (finfo
->info
, input_bfd
, input_section
, h
,
5428 (PTR
) rel
, contents
, &skip
, &relocation
)))
5434 /* Now warn if a global symbol is undefined. We could not
5435 do this earlier, because check_dynamic_reloc might want
5436 to skip this reloc. */
5438 && ! finfo
->info
->shared
5439 && r_type
!= RELOC_BASE10
5440 && r_type
!= RELOC_BASE13
5441 && r_type
!= RELOC_BASE22
)
5446 name
= h
->root
.root
.string
;
5448 name
= strings
+ GET_WORD (input_bfd
, syms
[r_index
].e_strx
);
5449 if (! ((*finfo
->info
->callbacks
->undefined_symbol
)
5450 (finfo
->info
, name
, input_bfd
, input_section
,
5455 if (r_type
!= RELOC_SPARC_REV32
)
5456 r
= MY_final_link_relocate (howto_table_ext
+ r_type
,
5457 input_bfd
, input_section
,
5458 contents
, r_addr
, relocation
,
5464 x
= bfd_get_32 (input_bfd
, contents
+ r_addr
);
5465 x
= x
+ relocation
+ r_addend
;
5466 bfd_putl32 (/*input_bfd,*/ x
, contents
+ r_addr
);
5470 if (r
!= bfd_reloc_ok
)
5475 case bfd_reloc_outofrange
:
5477 case bfd_reloc_overflow
:
5482 name
= h
->root
.root
.string
;
5484 || r_type
== RELOC_BASE10
5485 || r_type
== RELOC_BASE13
5486 || r_type
== RELOC_BASE22
)
5487 name
= strings
+ GET_WORD (input_bfd
,
5488 syms
[r_index
].e_strx
);
5493 s
= aout_reloc_index_to_section (input_bfd
, r_index
);
5494 name
= bfd_section_name (input_bfd
, s
);
5496 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
5497 (finfo
->info
, name
, howto_table_ext
[r_type
].name
,
5498 r_addend
, input_bfd
, input_section
, r_addr
)))
5510 /* Handle a link order which is supposed to generate a reloc. */
5513 aout_link_reloc_link_order (finfo
, o
, p
)
5514 struct aout_final_link_info
*finfo
;
5516 struct bfd_link_order
*p
;
5518 struct bfd_link_order_reloc
*pr
;
5521 reloc_howto_type
*howto
;
5522 file_ptr
*reloff_ptr
= NULL
;
5523 struct reloc_std_external srel
;
5524 struct reloc_ext_external erel
;
5529 if (p
->type
== bfd_section_reloc_link_order
)
5532 if (bfd_is_abs_section (pr
->u
.section
))
5533 r_index
= N_ABS
| N_EXT
;
5536 BFD_ASSERT (pr
->u
.section
->owner
== finfo
->output_bfd
);
5537 r_index
= pr
->u
.section
->target_index
;
5542 struct aout_link_hash_entry
*h
;
5544 BFD_ASSERT (p
->type
== bfd_symbol_reloc_link_order
);
5546 h
= ((struct aout_link_hash_entry
*)
5547 bfd_wrapped_link_hash_lookup (finfo
->output_bfd
, finfo
->info
,
5548 pr
->u
.name
, false, false, true));
5549 if (h
!= (struct aout_link_hash_entry
*) NULL
5554 /* We decided to strip this symbol, but it turns out that we
5555 can't. Note that we lose the other and desc information
5556 here. I don't think that will ever matter for a global
5560 if (! aout_link_write_other_symbol (h
, (PTR
) finfo
))
5566 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
5567 (finfo
->info
, pr
->u
.name
, (bfd
*) NULL
,
5568 (asection
*) NULL
, (bfd_vma
) 0)))
5574 howto
= bfd_reloc_type_lookup (finfo
->output_bfd
, pr
->reloc
);
5577 bfd_set_error (bfd_error_bad_value
);
5581 if (o
== obj_textsec (finfo
->output_bfd
))
5582 reloff_ptr
= &finfo
->treloff
;
5583 else if (o
== obj_datasec (finfo
->output_bfd
))
5584 reloff_ptr
= &finfo
->dreloff
;
5588 if (obj_reloc_entry_size (finfo
->output_bfd
) == RELOC_STD_SIZE
)
5591 MY_put_reloc(finfo
->output_bfd
, r_extern
, r_index
, p
->offset
, howto
,
5601 r_pcrel
= howto
->pc_relative
;
5602 r_baserel
= (howto
->type
& 8) != 0;
5603 r_jmptable
= (howto
->type
& 16) != 0;
5604 r_relative
= (howto
->type
& 32) != 0;
5605 r_length
= howto
->size
;
5607 PUT_WORD (finfo
->output_bfd
, p
->offset
, srel
.r_address
);
5608 if (bfd_header_big_endian (finfo
->output_bfd
))
5610 srel
.r_index
[0] = r_index
>> 16;
5611 srel
.r_index
[1] = r_index
>> 8;
5612 srel
.r_index
[2] = r_index
;
5614 ((r_extern
? RELOC_STD_BITS_EXTERN_BIG
: 0)
5615 | (r_pcrel
? RELOC_STD_BITS_PCREL_BIG
: 0)
5616 | (r_baserel
? RELOC_STD_BITS_BASEREL_BIG
: 0)
5617 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_BIG
: 0)
5618 | (r_relative
? RELOC_STD_BITS_RELATIVE_BIG
: 0)
5619 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_BIG
));
5623 srel
.r_index
[2] = r_index
>> 16;
5624 srel
.r_index
[1] = r_index
>> 8;
5625 srel
.r_index
[0] = r_index
;
5627 ((r_extern
? RELOC_STD_BITS_EXTERN_LITTLE
: 0)
5628 | (r_pcrel
? RELOC_STD_BITS_PCREL_LITTLE
: 0)
5629 | (r_baserel
? RELOC_STD_BITS_BASEREL_LITTLE
: 0)
5630 | (r_jmptable
? RELOC_STD_BITS_JMPTABLE_LITTLE
: 0)
5631 | (r_relative
? RELOC_STD_BITS_RELATIVE_LITTLE
: 0)
5632 | (r_length
<< RELOC_STD_BITS_LENGTH_SH_LITTLE
));
5636 rel_ptr
= (PTR
) &srel
;
5638 /* We have to write the addend into the object file, since
5639 standard a.out relocs are in place. It would be more
5640 reliable if we had the current contents of the file here,
5641 rather than assuming zeroes, but we can't read the file since
5642 it was opened using bfd_openw. */
5643 if (pr
->addend
!= 0)
5646 bfd_reloc_status_type r
;
5650 size
= bfd_get_reloc_size (howto
);
5651 buf
= (bfd_byte
*) bfd_zmalloc (size
);
5652 if (buf
== (bfd_byte
*) NULL
)
5654 r
= MY_relocate_contents (howto
, finfo
->output_bfd
,
5661 case bfd_reloc_outofrange
:
5663 case bfd_reloc_overflow
:
5664 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
5666 (p
->type
== bfd_section_reloc_link_order
5667 ? bfd_section_name (finfo
->output_bfd
,
5670 howto
->name
, pr
->addend
, (bfd
*) NULL
,
5671 (asection
*) NULL
, (bfd_vma
) 0)))
5678 ok
= bfd_set_section_contents (finfo
->output_bfd
, o
,
5680 (file_ptr
) p
->offset
,
5689 #ifdef MY_put_ext_reloc
5690 MY_put_ext_reloc (finfo
->output_bfd
, r_extern
, r_index
, p
->offset
,
5691 howto
, &erel
, pr
->addend
);
5693 PUT_WORD (finfo
->output_bfd
, p
->offset
, erel
.r_address
);
5695 if (bfd_header_big_endian (finfo
->output_bfd
))
5697 erel
.r_index
[0] = r_index
>> 16;
5698 erel
.r_index
[1] = r_index
>> 8;
5699 erel
.r_index
[2] = r_index
;
5701 ((r_extern
? RELOC_EXT_BITS_EXTERN_BIG
: 0)
5702 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_BIG
));
5706 erel
.r_index
[2] = r_index
>> 16;
5707 erel
.r_index
[1] = r_index
>> 8;
5708 erel
.r_index
[0] = r_index
;
5710 (r_extern
? RELOC_EXT_BITS_EXTERN_LITTLE
: 0)
5711 | (howto
->type
<< RELOC_EXT_BITS_TYPE_SH_LITTLE
);
5714 PUT_WORD (finfo
->output_bfd
, pr
->addend
, erel
.r_addend
);
5715 #endif /* MY_put_ext_reloc */
5717 rel_ptr
= (PTR
) &erel
;
5720 if (bfd_seek (finfo
->output_bfd
, *reloff_ptr
, SEEK_SET
) != 0
5721 || (bfd_write (rel_ptr
, (bfd_size_type
) 1,
5722 obj_reloc_entry_size (finfo
->output_bfd
),
5724 != obj_reloc_entry_size (finfo
->output_bfd
)))
5727 *reloff_ptr
+= obj_reloc_entry_size (finfo
->output_bfd
);
5729 /* Assert that the relocs have not run into the symbols, and that n
5730 the text relocs have not run into the data relocs. */
5731 BFD_ASSERT (*reloff_ptr
<= obj_sym_filepos (finfo
->output_bfd
)
5732 && (reloff_ptr
!= &finfo
->treloff
5734 <= obj_datasec (finfo
->output_bfd
)->rel_filepos
)));