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
125 #include "safe-ctype.h"
130 #include "aout/aout64.h"
131 #include "aout/stab_gnu.h"
134 static bfd_boolean aout_get_external_symbols
136 static bfd_boolean translate_from_native_sym_flags
137 PARAMS ((bfd *, aout_symbol_type *));
138 static bfd_boolean translate_to_native_sym_flags
139 PARAMS ((bfd *, asymbol *, struct external_nlist *));
140 static void adjust_o_magic
141 PARAMS ((bfd *, struct internal_exec *));
142 static void adjust_z_magic
143 PARAMS ((bfd *, struct internal_exec *));
144 static void adjust_n_magic
145 PARAMS ((bfd *, struct internal_exec *));
146 reloc_howto_type * NAME(aout,reloc_type_lookup)
147 PARAMS ((bfd *, bfd_reloc_code_real_type));
154 The file @file{aoutx.h} provides for both the @emph{standard}
155 and @emph{extended} forms of a.out relocation records.
157 The standard records contain only an
158 address, a symbol index, and a type field. The extended records
159 (used on 29ks and sparcs) also have a full integer for an
163 #ifndef CTOR_TABLE_RELOC_HOWTO
164 #define CTOR_TABLE_RELOC_IDX 2
165 #define CTOR_TABLE_RELOC_HOWTO(BFD) \
166 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
167 ? howto_table_ext : howto_table_std) \
168 + CTOR_TABLE_RELOC_IDX)
171 #ifndef MY_swap_std_reloc_in
172 #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
175 #ifndef MY_swap_ext_reloc_in
176 #define MY_swap_ext_reloc_in NAME(aout,swap_ext_reloc_in)
179 #ifndef MY_swap_std_reloc_out
180 #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
183 #ifndef MY_swap_ext_reloc_out
184 #define MY_swap_ext_reloc_out NAME(aout,swap_ext_reloc_out)
187 #ifndef MY_final_link_relocate
188 #define MY_final_link_relocate _bfd_final_link_relocate
191 #ifndef MY_relocate_contents
192 #define MY_relocate_contents _bfd_relocate_contents
195 #define howto_table_ext NAME(aout,ext_howto_table)
196 #define howto_table_std NAME(aout,std_howto_table)
198 reloc_howto_type howto_table_ext[] =
200 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
201 HOWTO(RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", FALSE, 0,0x000000ff, FALSE),
202 HOWTO(RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", FALSE, 0,0x0000ffff, FALSE),
203 HOWTO(RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", FALSE, 0,0xffffffff, FALSE),
204 HOWTO(RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed,0,"DISP8", FALSE, 0,0x000000ff, FALSE),
205 HOWTO(RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed,0,"DISP16", FALSE, 0,0x0000ffff, FALSE),
206 HOWTO(RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed,0,"DISP32", FALSE, 0,0xffffffff, FALSE),
207 HOWTO(RELOC_WDISP30,2, 2, 30, TRUE, 0, complain_overflow_signed,0,"WDISP30", FALSE, 0,0x3fffffff, FALSE),
208 HOWTO(RELOC_WDISP22,2, 2, 22, TRUE, 0, complain_overflow_signed,0,"WDISP22", FALSE, 0,0x003fffff, FALSE),
209 HOWTO(RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"HI22", FALSE, 0,0x003fffff, FALSE),
210 HOWTO(RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"22", FALSE, 0,0x003fffff, FALSE),
211 HOWTO(RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield,0,"13", FALSE, 0,0x00001fff, FALSE),
212 HOWTO(RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont,0,"LO10", FALSE, 0,0x000003ff, FALSE),
213 HOWTO(RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"SFA_BASE", FALSE, 0,0xffffffff, FALSE),
214 HOWTO(RELOC_SFA_OFF13,0,2, 32, FALSE, 0, complain_overflow_bitfield,0,"SFA_OFF13",FALSE, 0,0xffffffff, FALSE),
215 HOWTO(RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont,0,"BASE10", FALSE, 0,0x000003ff, FALSE),
216 HOWTO(RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed,0,"BASE13", FALSE, 0,0x00001fff, FALSE),
217 HOWTO(RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"BASE22", FALSE, 0,0x003fffff, FALSE),
218 HOWTO(RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont,0,"PC10", FALSE, 0,0x000003ff, TRUE),
219 HOWTO(RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed,0,"PC22", FALSE, 0,0x003fffff, TRUE),
220 HOWTO(RELOC_JMP_TBL,2, 2, 30, TRUE, 0, complain_overflow_signed,0,"JMP_TBL", FALSE, 0,0x3fffffff, FALSE),
221 HOWTO(RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"SEGOFF16", FALSE, 0,0x00000000, FALSE),
222 HOWTO(RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GLOB_DAT", FALSE, 0,0x00000000, FALSE),
223 HOWTO(RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_SLOT", FALSE, 0,0x00000000, FALSE),
224 HOWTO(RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
225 HOWTO(0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
226 HOWTO(0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
227 #define RELOC_SPARC_REV32 RELOC_WDISP19
228 HOWTO(RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont,0,"R_SPARC_REV32", FALSE, 0,0xffffffff, FALSE),
231 /* Convert standard reloc records to "arelent" format (incl byte swap). */
233 reloc_howto_type howto_table_std[] = {
234 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
235 HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
236 HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
237 HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
238 HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE),
239 HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE),
240 HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
241 HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
242 HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE),
243 HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE),
244 HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE),
245 HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE),
251 HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE),
267 HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
275 HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE),
278 #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
281 NAME(aout,reloc_type_lookup) (abfd,code)
283 bfd_reloc_code_real_type code;
285 #define EXT(i, j) case i: return &howto_table_ext[j]
286 #define STD(i, j) case i: return &howto_table_std[j]
287 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
289 if (code == BFD_RELOC_CTOR)
290 switch (bfd_get_arch_info (abfd)->bits_per_address)
303 EXT (BFD_RELOC_8, 0);
304 EXT (BFD_RELOC_16, 1);
305 EXT (BFD_RELOC_32, 2);
306 EXT (BFD_RELOC_HI22, 8);
307 EXT (BFD_RELOC_LO10, 11);
308 EXT (BFD_RELOC_32_PCREL_S2, 6);
309 EXT (BFD_RELOC_SPARC_WDISP22, 7);
310 EXT (BFD_RELOC_SPARC13, 10);
311 EXT (BFD_RELOC_SPARC_GOT10, 14);
312 EXT (BFD_RELOC_SPARC_BASE13, 15);
313 EXT (BFD_RELOC_SPARC_GOT13, 15);
314 EXT (BFD_RELOC_SPARC_GOT22, 16);
315 EXT (BFD_RELOC_SPARC_PC10, 17);
316 EXT (BFD_RELOC_SPARC_PC22, 18);
317 EXT (BFD_RELOC_SPARC_WPLT30, 19);
318 EXT (BFD_RELOC_SPARC_REV32, 26);
319 default: return (reloc_howto_type *) NULL;
325 STD (BFD_RELOC_8, 0);
326 STD (BFD_RELOC_16, 1);
327 STD (BFD_RELOC_32, 2);
328 STD (BFD_RELOC_8_PCREL, 4);
329 STD (BFD_RELOC_16_PCREL, 5);
330 STD (BFD_RELOC_32_PCREL, 6);
331 STD (BFD_RELOC_16_BASEREL, 9);
332 STD (BFD_RELOC_32_BASEREL, 10);
333 default: return (reloc_howto_type *) NULL;
339 Internal entry points
342 @file{aoutx.h} exports several routines for accessing the
343 contents of an a.out file, which are gathered and exported in
344 turn by various format specific files (eg sunos.c).
350 aout_@var{size}_swap_exec_header_in
353 void aout_@var{size}_swap_exec_header_in,
355 struct external_exec *raw_bytes,
356 struct internal_exec *execp);
359 Swap the information in an executable header @var{raw_bytes} taken
360 from a raw byte stream memory image into the internal exec header
361 structure @var{execp}.
364 #ifndef NAME_swap_exec_header_in
366 NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
368 struct external_exec *raw_bytes;
369 struct internal_exec *execp;
371 struct external_exec *bytes = (struct external_exec *)raw_bytes;
373 /* The internal_exec structure has some fields that are unused in this
374 configuration (IE for i960), so ensure that all such uninitialized
375 fields are zero'd out. There are places where two of these structs
376 are memcmp'd, and thus the contents do matter. */
377 memset ((PTR) execp, 0, sizeof (struct internal_exec));
378 /* Now fill in fields in the execp, from the bytes in the raw data. */
379 execp->a_info = H_GET_32 (abfd, bytes->e_info);
380 execp->a_text = GET_WORD (abfd, bytes->e_text);
381 execp->a_data = GET_WORD (abfd, bytes->e_data);
382 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
383 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
384 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
385 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
386 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
388 #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
393 aout_@var{size}_swap_exec_header_out
396 void aout_@var{size}_swap_exec_header_out
398 struct internal_exec *execp,
399 struct external_exec *raw_bytes);
402 Swap the information in an internal exec header structure
403 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
406 NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
408 struct internal_exec *execp;
409 struct external_exec *raw_bytes;
411 struct external_exec *bytes = (struct external_exec *)raw_bytes;
413 /* Now fill in fields in the raw data, from the fields in the exec struct. */
414 H_PUT_32 (abfd, execp->a_info , bytes->e_info);
415 PUT_WORD (abfd, execp->a_text , bytes->e_text);
416 PUT_WORD (abfd, execp->a_data , bytes->e_data);
417 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
418 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
419 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
420 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
421 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
424 /* Make all the section for an a.out file. */
427 NAME(aout,make_sections) (abfd)
430 if (obj_textsec (abfd) == (asection *) NULL
431 && bfd_make_section (abfd, ".text") == (asection *) NULL)
433 if (obj_datasec (abfd) == (asection *) NULL
434 && bfd_make_section (abfd, ".data") == (asection *) NULL)
436 if (obj_bsssec (abfd) == (asection *) NULL
437 && bfd_make_section (abfd, ".bss") == (asection *) NULL)
444 aout_@var{size}_some_aout_object_p
447 const bfd_target *aout_@var{size}_some_aout_object_p
449 const bfd_target *(*callback_to_real_object_p) ());
452 Some a.out variant thinks that the file open in @var{abfd}
453 checking is an a.out file. Do some more checking, and set up
454 for access if it really is. Call back to the calling
455 environment's "finish up" function just before returning, to
456 handle any last-minute setup.
460 NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
462 struct internal_exec *execp;
463 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
465 struct aout_data_struct *rawptr, *oldrawptr;
466 const bfd_target *result;
467 bfd_size_type amt = sizeof (struct aout_data_struct);
469 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
473 oldrawptr = abfd->tdata.aout_data;
474 abfd->tdata.aout_data = rawptr;
476 /* Copy the contents of the old tdata struct.
477 In particular, we want the subformat, since for hpux it was set in
478 hp300hpux.c:swap_exec_header_in and will be used in
479 hp300hpux.c:callback. */
480 if (oldrawptr != NULL)
481 *abfd->tdata.aout_data = *oldrawptr;
483 abfd->tdata.aout_data->a.hdr = &rawptr->e;
484 /* Copy in the internal_exec struct. */
485 *(abfd->tdata.aout_data->a.hdr) = *execp;
486 execp = abfd->tdata.aout_data->a.hdr;
488 /* Set the file flags. */
489 abfd->flags = BFD_NO_FLAGS;
490 if (execp->a_drsize || execp->a_trsize)
491 abfd->flags |= HAS_RELOC;
492 /* Setting of EXEC_P has been deferred to the bottom of this function. */
494 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
495 if (N_DYNAMIC (*execp))
496 abfd->flags |= DYNAMIC;
498 if (N_MAGIC (*execp) == ZMAGIC)
500 abfd->flags |= D_PAGED | WP_TEXT;
501 adata (abfd).magic = z_magic;
503 else if (N_MAGIC (*execp) == QMAGIC)
505 abfd->flags |= D_PAGED | WP_TEXT;
506 adata (abfd).magic = z_magic;
507 adata (abfd).subformat = q_magic_format;
509 else if (N_MAGIC (*execp) == NMAGIC)
511 abfd->flags |= WP_TEXT;
512 adata (abfd).magic = n_magic;
514 else if (N_MAGIC (*execp) == OMAGIC
515 || N_MAGIC (*execp) == BMAGIC)
516 adata (abfd).magic = o_magic;
519 /* Should have been checked with N_BADMAG before this routine
524 bfd_get_start_address (abfd) = execp->a_entry;
526 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
527 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
529 /* The default relocation entry size is that of traditional V7 Unix. */
530 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
532 /* The default symbol entry size is that of traditional Unix. */
533 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
536 bfd_init_window (&obj_aout_sym_window (abfd));
537 bfd_init_window (&obj_aout_string_window (abfd));
539 obj_aout_external_syms (abfd) = NULL;
540 obj_aout_external_strings (abfd) = NULL;
541 obj_aout_sym_hashes (abfd) = NULL;
543 if (! NAME(aout,make_sections) (abfd))
546 obj_datasec (abfd)->_raw_size = execp->a_data;
547 obj_bsssec (abfd)->_raw_size = execp->a_bss;
549 obj_textsec (abfd)->flags =
550 (execp->a_trsize != 0
551 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
552 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
553 obj_datasec (abfd)->flags =
554 (execp->a_drsize != 0
555 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
556 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
557 obj_bsssec (abfd)->flags = SEC_ALLOC;
559 #ifdef THIS_IS_ONLY_DOCUMENTATION
560 /* The common code can't fill in these things because they depend
561 on either the start address of the text segment, the rounding
562 up of virtual addresses between segments, or the starting file
563 position of the text segment -- all of which varies among different
564 versions of a.out. */
566 /* Call back to the format-dependent code to fill in the rest of the
567 fields and do any further cleanup. Things that should be filled
568 in by the callback: */
570 struct exec *execp = exec_hdr (abfd);
572 obj_textsec (abfd)->size = N_TXTSIZE (*execp);
573 obj_textsec (abfd)->raw_size = N_TXTSIZE (*execp);
574 /* Data and bss are already filled in since they're so standard. */
576 /* The virtual memory addresses of the sections. */
577 obj_textsec (abfd)->vma = N_TXTADDR (*execp);
578 obj_datasec (abfd)->vma = N_DATADDR (*execp);
579 obj_bsssec (abfd)->vma = N_BSSADDR (*execp);
581 /* The file offsets of the sections. */
582 obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
583 obj_datasec (abfd)->filepos = N_DATOFF (*execp);
585 /* The file offsets of the relocation info. */
586 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
587 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);
589 /* The file offsets of the string table and symbol table. */
590 obj_str_filepos (abfd) = N_STROFF (*execp);
591 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
593 /* Determine the architecture and machine type of the object file. */
594 switch (N_MACHTYPE (*exec_hdr (abfd)))
597 abfd->obj_arch = bfd_arch_obscure;
601 adata (abfd)->page_size = TARGET_PAGE_SIZE;
602 adata (abfd)->segment_size = SEGMENT_SIZE;
603 adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
607 /* The architecture is encoded in various ways in various a.out variants,
608 or is not encoded at all in some of them. The relocation size depends
609 on the architecture and the a.out variant. Finally, the return value
610 is the bfd_target vector in use. If an error occurs, return zero and
611 set bfd_error to the appropriate error code.
613 Formats such as b.out, which have additional fields in the a.out
614 header, should cope with them in this callback as well. */
615 #endif /* DOCUMENTATION */
617 result = (*callback_to_real_object_p) (abfd);
619 /* Now that the segment addresses have been worked out, take a better
620 guess at whether the file is executable. If the entry point
621 is within the text segment, assume it is. (This makes files
622 executable even if their entry point address is 0, as long as
623 their text starts at zero.).
625 This test had to be changed to deal with systems where the text segment
626 runs at a different location than the default. The problem is that the
627 entry address can appear to be outside the text segment, thus causing an
628 erroneous conclusion that the file isn't executable.
630 To fix this, we now accept any non-zero entry point as an indication of
631 executability. This will work most of the time, since only the linker
632 sets the entry point, and that is likely to be non-zero for most systems. */
634 if (execp->a_entry != 0
635 || (execp->a_entry >= obj_textsec (abfd)->vma
636 && execp->a_entry < (obj_textsec (abfd)->vma
637 + obj_textsec (abfd)->_raw_size)))
638 abfd->flags |= EXEC_P;
642 struct stat stat_buf;
644 /* The original heuristic doesn't work in some important cases.
645 The a.out file has no information about the text start
646 address. For files (like kernels) linked to non-standard
647 addresses (ld -Ttext nnn) the entry point may not be between
648 the default text start (obj_textsec(abfd)->vma) and
649 (obj_textsec(abfd)->vma) + text size. This is not just a mach
650 issue. Many kernels are loaded at non standard addresses. */
651 if (abfd->iostream != NULL
652 && (abfd->flags & BFD_IN_MEMORY) == 0
653 && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0)
654 && ((stat_buf.st_mode & 0111) != 0))
655 abfd->flags |= EXEC_P;
657 #endif /* STAT_FOR_EXEC */
661 #if 0 /* These should be set correctly anyways. */
662 abfd->sections = obj_textsec (abfd);
663 obj_textsec (abfd)->next = obj_datasec (abfd);
664 obj_datasec (abfd)->next = obj_bsssec (abfd);
670 bfd_release (abfd, rawptr);
671 abfd->tdata.aout_data = oldrawptr;
677 aout_@var{size}_mkobject
680 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
683 Initialize BFD @var{abfd} for use with a.out files.
687 NAME(aout,mkobject) (abfd)
690 struct aout_data_struct *rawptr;
691 bfd_size_type amt = sizeof (struct aout_data_struct);
693 bfd_set_error (bfd_error_system_call);
695 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
699 abfd->tdata.aout_data = rawptr;
700 exec_hdr (abfd) = &(rawptr->e);
702 obj_textsec (abfd) = (asection *) NULL;
703 obj_datasec (abfd) = (asection *) NULL;
704 obj_bsssec (abfd) = (asection *) NULL;
711 aout_@var{size}_machine_type
714 enum machine_type aout_@var{size}_machine_type
715 (enum bfd_architecture arch,
716 unsigned long machine));
719 Keep track of machine architecture and machine type for
720 a.out's. Return the <<machine_type>> for a particular
721 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
722 and machine can't be represented in a.out format.
724 If the architecture is understood, machine type 0 (default)
725 is always understood.
729 NAME(aout,machine_type) (arch, machine, unknown)
730 enum bfd_architecture arch;
731 unsigned long machine;
732 bfd_boolean *unknown;
734 enum machine_type arch_flags;
736 arch_flags = M_UNKNOWN;
743 || machine == bfd_mach_sparc
744 || machine == bfd_mach_sparc_sparclite
745 || machine == bfd_mach_sparc_sparclite_le
746 || machine == bfd_mach_sparc_v9)
747 arch_flags = M_SPARC;
748 else if (machine == bfd_mach_sparc_sparclet)
749 arch_flags = M_SPARCLET;
755 case 0: arch_flags = M_68010; break;
756 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break;
757 case bfd_mach_m68010: arch_flags = M_68010; break;
758 case bfd_mach_m68020: arch_flags = M_68020; break;
759 default: arch_flags = M_UNKNOWN; break;
765 || machine == bfd_mach_i386_i386
766 || machine == bfd_mach_i386_i386_intel_syntax)
784 case bfd_mach_mips3000:
785 case bfd_mach_mips3900:
786 arch_flags = M_MIPS1;
788 case bfd_mach_mips6000:
789 arch_flags = M_MIPS2;
791 case bfd_mach_mips4000:
792 case bfd_mach_mips4010:
793 case bfd_mach_mips4100:
794 case bfd_mach_mips4300:
795 case bfd_mach_mips4400:
796 case bfd_mach_mips4600:
797 case bfd_mach_mips4650:
798 case bfd_mach_mips8000:
799 case bfd_mach_mips10000:
800 case bfd_mach_mips12000:
801 case bfd_mach_mips16:
802 case bfd_mach_mipsisa32:
804 case bfd_mach_mipsisa64:
805 case bfd_mach_mips_sb1:
806 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
807 arch_flags = M_MIPS2;
810 arch_flags = M_UNKNOWN;
818 case 0: arch_flags = M_NS32532; break;
819 case 32032: arch_flags = M_NS32032; break;
820 case 32532: arch_flags = M_NS32532; break;
821 default: arch_flags = M_UNKNOWN; break;
830 if (machine == 0 || machine == 255)
835 arch_flags = M_UNKNOWN;
838 if (arch_flags != M_UNKNOWN)
846 aout_@var{size}_set_arch_mach
849 bfd_boolean aout_@var{size}_set_arch_mach,
851 enum bfd_architecture arch,
852 unsigned long machine));
855 Set the architecture and the machine of the BFD @var{abfd} to the
856 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
857 can support the architecture required.
861 NAME(aout,set_arch_mach) (abfd, arch, machine)
863 enum bfd_architecture arch;
864 unsigned long machine;
866 if (! bfd_default_set_arch_mach (abfd, arch, machine))
869 if (arch != bfd_arch_unknown)
873 NAME(aout,machine_type) (arch, machine, &unknown);
878 /* Determine the size of a relocation entry. */
884 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
887 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
891 return (*aout_backend_info (abfd)->set_sizes) (abfd);
895 adjust_o_magic (abfd, execp)
897 struct internal_exec *execp;
899 file_ptr pos = adata (abfd).exec_bytes_size;
904 obj_textsec (abfd)->filepos = pos;
905 if (!obj_textsec (abfd)->user_set_vma)
906 obj_textsec (abfd)->vma = vma;
908 vma = obj_textsec (abfd)->vma;
910 pos += obj_textsec (abfd)->_raw_size;
911 vma += obj_textsec (abfd)->_raw_size;
914 if (!obj_datasec (abfd)->user_set_vma)
916 #if 0 /* ?? Does alignment in the file image really matter? */
917 pad = align_power (vma, obj_datasec (abfd)->alignment_power) - vma;
919 obj_textsec (abfd)->_raw_size += pad;
922 obj_datasec (abfd)->vma = vma;
925 vma = obj_datasec (abfd)->vma;
926 obj_datasec (abfd)->filepos = pos;
927 pos += obj_datasec (abfd)->_raw_size;
928 vma += obj_datasec (abfd)->_raw_size;
931 if (!obj_bsssec (abfd)->user_set_vma)
934 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
936 obj_datasec (abfd)->_raw_size += pad;
939 obj_bsssec (abfd)->vma = vma;
943 /* The VMA of the .bss section is set by the VMA of the
944 .data section plus the size of the .data section. We may
945 need to add padding bytes to make this true. */
946 pad = obj_bsssec (abfd)->vma - vma;
949 obj_datasec (abfd)->_raw_size += pad;
953 obj_bsssec (abfd)->filepos = pos;
955 /* Fix up the exec header. */
956 execp->a_text = obj_textsec (abfd)->_raw_size;
957 execp->a_data = obj_datasec (abfd)->_raw_size;
958 execp->a_bss = obj_bsssec (abfd)->_raw_size;
959 N_SET_MAGIC (*execp, OMAGIC);
963 adjust_z_magic (abfd, execp)
965 struct internal_exec *execp;
967 bfd_size_type data_pad, text_pad;
969 const struct aout_backend_data *abdp;
970 int ztih; /* Nonzero if text includes exec header. */
972 abdp = aout_backend_info (abfd);
976 && (abdp->text_includes_header
977 || obj_aout_subformat (abfd) == q_magic_format));
978 obj_textsec (abfd)->filepos = (ztih
979 ? adata (abfd).exec_bytes_size
980 : adata (abfd).zmagic_disk_block_size);
981 if (! obj_textsec (abfd)->user_set_vma)
983 /* ?? Do we really need to check for relocs here? */
984 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
987 ? (abdp->default_text_vma
988 + adata (abfd).exec_bytes_size)
989 : abdp->default_text_vma));
994 /* The .text section is being loaded at an unusual address. We
995 may need to pad it such that the .data section starts at a page
998 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
999 & (adata (abfd).page_size - 1));
1001 text_pad = ((- obj_textsec (abfd)->vma)
1002 & (adata (abfd).page_size - 1));
1005 /* Find start of data. */
1008 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
1009 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1013 /* Note that if page_size == zmagic_disk_block_size, then
1014 filepos == page_size, and this case is the same as the ztih
1016 text_end = obj_textsec (abfd)->_raw_size;
1017 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1018 text_end += obj_textsec (abfd)->filepos;
1020 obj_textsec (abfd)->_raw_size += text_pad;
1021 text_end += text_pad;
1024 if (!obj_datasec (abfd)->user_set_vma)
1027 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->_raw_size;
1028 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1030 if (abdp && abdp->zmagic_mapped_contiguous)
1032 asection * text = obj_textsec (abfd);
1033 asection * data = obj_datasec (abfd);
1035 text_pad = data->vma - (text->vma + text->_raw_size);
1036 /* Only pad the text section if the data
1037 section is going to be placed after it. */
1039 text->_raw_size += text_pad;
1041 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
1042 + obj_textsec (abfd)->_raw_size);
1044 /* Fix up exec header while we're at it. */
1045 execp->a_text = obj_textsec (abfd)->_raw_size;
1046 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
1047 execp->a_text += adata (abfd).exec_bytes_size;
1048 if (obj_aout_subformat (abfd) == q_magic_format)
1049 N_SET_MAGIC (*execp, QMAGIC);
1051 N_SET_MAGIC (*execp, ZMAGIC);
1053 /* Spec says data section should be rounded up to page boundary. */
1054 obj_datasec (abfd)->_raw_size
1055 = align_power (obj_datasec (abfd)->_raw_size,
1056 obj_bsssec (abfd)->alignment_power);
1057 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->_raw_size,
1058 adata (abfd).page_size);
1059 data_pad = execp->a_data - obj_datasec (abfd)->_raw_size;
1062 if (!obj_bsssec (abfd)->user_set_vma)
1063 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
1064 + obj_datasec (abfd)->_raw_size);
1065 /* If the BSS immediately follows the data section and extra space
1066 in the page is left after the data section, fudge data
1067 in the header so that the bss section looks smaller by that
1068 amount. We'll start the bss section there, and lie to the OS.
1069 (Note that a linker script, as well as the above assignment,
1070 could have explicitly set the BSS vma to immediately follow
1071 the data section.) */
1072 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
1073 == obj_datasec (abfd)->vma + obj_datasec (abfd)->_raw_size)
1074 execp->a_bss = (data_pad > obj_bsssec (abfd)->_raw_size
1075 ? 0 : obj_bsssec (abfd)->_raw_size - data_pad);
1077 execp->a_bss = obj_bsssec (abfd)->_raw_size;
1081 adjust_n_magic (abfd, execp)
1083 struct internal_exec *execp;
1085 file_ptr pos = adata (abfd).exec_bytes_size;
1090 obj_textsec (abfd)->filepos = pos;
1091 if (!obj_textsec (abfd)->user_set_vma)
1092 obj_textsec (abfd)->vma = vma;
1094 vma = obj_textsec (abfd)->vma;
1095 pos += obj_textsec (abfd)->_raw_size;
1096 vma += obj_textsec (abfd)->_raw_size;
1099 obj_datasec (abfd)->filepos = pos;
1100 if (!obj_datasec (abfd)->user_set_vma)
1101 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1102 vma = obj_datasec (abfd)->vma;
1104 /* Since BSS follows data immediately, see if it needs alignment. */
1105 vma += obj_datasec (abfd)->_raw_size;
1106 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
1107 obj_datasec (abfd)->_raw_size += pad;
1108 pos += obj_datasec (abfd)->_raw_size;
1111 if (!obj_bsssec (abfd)->user_set_vma)
1112 obj_bsssec (abfd)->vma = vma;
1114 vma = obj_bsssec (abfd)->vma;
1116 /* Fix up exec header. */
1117 execp->a_text = obj_textsec (abfd)->_raw_size;
1118 execp->a_data = obj_datasec (abfd)->_raw_size;
1119 execp->a_bss = obj_bsssec (abfd)->_raw_size;
1120 N_SET_MAGIC (*execp, NMAGIC);
1124 NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1126 bfd_size_type *text_size;
1127 file_ptr *text_end ATTRIBUTE_UNUSED;
1129 struct internal_exec *execp = exec_hdr (abfd);
1131 if (! NAME(aout,make_sections) (abfd))
1134 if (adata (abfd).magic != undecided_magic)
1137 obj_textsec (abfd)->_raw_size =
1138 align_power (obj_textsec (abfd)->_raw_size,
1139 obj_textsec (abfd)->alignment_power);
1141 *text_size = obj_textsec (abfd)->_raw_size;
1142 /* Rule (heuristic) for when to pad to a new page. Note that there
1143 are (at least) two ways demand-paged (ZMAGIC) files have been
1144 handled. Most Berkeley-based systems start the text segment at
1145 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1146 segment right after the exec header; the latter is counted in the
1147 text segment size, and is paged in by the kernel with the rest of
1150 /* This perhaps isn't the right way to do this, but made it simpler for me
1151 to understand enough to implement it. Better would probably be to go
1152 right from BFD flags to alignment/positioning characteristics. But the
1153 old code was sloppy enough about handling the flags, and had enough
1154 other magic, that it was a little hard for me to understand. I think
1155 I understand it better now, but I haven't time to do the cleanup this
1158 if (abfd->flags & D_PAGED)
1159 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1160 adata (abfd).magic = z_magic;
1161 else if (abfd->flags & WP_TEXT)
1162 adata (abfd).magic = n_magic;
1164 adata (abfd).magic = o_magic;
1166 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1168 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1170 switch (adata (abfd).magic)
1172 case n_magic: str = "NMAGIC"; break;
1173 case o_magic: str = "OMAGIC"; break;
1174 case z_magic: str = "ZMAGIC"; break;
1179 obj_textsec (abfd)->vma, obj_textsec (abfd)->_raw_size,
1180 obj_textsec (abfd)->alignment_power,
1181 obj_datasec (abfd)->vma, obj_datasec (abfd)->_raw_size,
1182 obj_datasec (abfd)->alignment_power,
1183 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->_raw_size,
1184 obj_bsssec (abfd)->alignment_power);
1188 switch (adata (abfd).magic)
1191 adjust_o_magic (abfd, execp);
1194 adjust_z_magic (abfd, execp);
1197 adjust_n_magic (abfd, execp);
1203 #ifdef BFD_AOUT_DEBUG
1204 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1205 obj_textsec (abfd)->vma, obj_textsec (abfd)->_raw_size,
1206 obj_textsec (abfd)->filepos,
1207 obj_datasec (abfd)->vma, obj_datasec (abfd)->_raw_size,
1208 obj_datasec (abfd)->filepos,
1209 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->_raw_size);
1217 aout_@var{size}_new_section_hook
1220 bfd_boolean aout_@var{size}_new_section_hook,
1222 asection *newsect));
1225 Called by the BFD in response to a @code{bfd_make_section}
1229 NAME(aout,new_section_hook) (abfd, newsect)
1233 /* Align to double at least. */
1234 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
1236 if (bfd_get_format (abfd) == bfd_object)
1238 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
1240 obj_textsec (abfd)= newsect;
1241 newsect->target_index = N_TEXT;
1245 if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
1247 obj_datasec (abfd) = newsect;
1248 newsect->target_index = N_DATA;
1252 if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
1254 obj_bsssec (abfd) = newsect;
1255 newsect->target_index = N_BSS;
1260 /* We allow more than three sections internally. */
1265 NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1270 bfd_size_type count;
1273 bfd_size_type text_size;
1275 if (! abfd->output_has_begun)
1277 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1281 if (section == obj_bsssec (abfd))
1283 bfd_set_error (bfd_error_no_contents);
1287 if (section != obj_textsec (abfd)
1288 && section != obj_datasec (abfd))
1290 if (aout_section_merge_with_text_p (abfd, section))
1291 section->filepos = obj_textsec (abfd)->filepos +
1292 (section->vma - obj_textsec (abfd)->vma);
1295 (*_bfd_error_handler)
1296 (_("%s: can not represent section `%s' in a.out object file format"),
1297 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1298 bfd_set_error (bfd_error_nonrepresentable_section);
1305 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1306 || bfd_bwrite (location, count, abfd) != count)
1313 /* Read the external symbols from an a.out file. */
1316 aout_get_external_symbols (abfd)
1319 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1321 bfd_size_type count;
1322 struct external_nlist *syms;
1325 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1328 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd),
1329 exec_hdr (abfd)->a_syms,
1330 &obj_aout_sym_window (abfd), TRUE))
1332 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1334 /* We allocate using malloc to make the values easy to free
1335 later on. If we put them on the objalloc it might not be
1336 possible to free them. */
1337 syms = ((struct external_nlist *)
1338 bfd_malloc (count * EXTERNAL_NLIST_SIZE));
1339 if (syms == (struct external_nlist *) NULL && count != 0)
1342 amt = exec_hdr (abfd)->a_syms;
1343 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1344 || bfd_bread (syms, amt, abfd) != amt)
1351 obj_aout_external_syms (abfd) = syms;
1352 obj_aout_external_sym_count (abfd) = count;
1355 if (obj_aout_external_strings (abfd) == NULL
1356 && exec_hdr (abfd)->a_syms != 0)
1358 unsigned char string_chars[BYTES_IN_WORD];
1359 bfd_size_type stringsize;
1361 bfd_size_type amt = BYTES_IN_WORD;
1363 /* Get the size of the strings. */
1364 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1365 || bfd_bread ((PTR) string_chars, amt, abfd) != amt)
1367 stringsize = GET_WORD (abfd, string_chars);
1370 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
1371 &obj_aout_string_window (abfd), TRUE))
1373 strings = (char *) obj_aout_string_window (abfd).data;
1375 strings = (char *) bfd_malloc (stringsize + 1);
1376 if (strings == NULL)
1379 /* Skip space for the string count in the buffer for convenience
1380 when using indexes. */
1381 amt = stringsize - BYTES_IN_WORD;
1382 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
1389 /* Ensure that a zero index yields an empty string. */
1392 strings[stringsize - 1] = 0;
1394 obj_aout_external_strings (abfd) = strings;
1395 obj_aout_external_string_size (abfd) = stringsize;
1401 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1402 and symbol->value fields of CACHE_PTR will be set from the a.out
1403 nlist structure. This function is responsible for setting
1404 symbol->flags and symbol->section, and adjusting symbol->value. */
1407 translate_from_native_sym_flags (abfd, cache_ptr)
1409 aout_symbol_type *cache_ptr;
1413 if ((cache_ptr->type & N_STAB) != 0
1414 || cache_ptr->type == N_FN)
1418 /* This is a debugging symbol. */
1419 cache_ptr->symbol.flags = BSF_DEBUGGING;
1421 /* Work out the symbol section. */
1422 switch (cache_ptr->type & N_TYPE)
1426 sec = obj_textsec (abfd);
1429 sec = obj_datasec (abfd);
1432 sec = obj_bsssec (abfd);
1436 sec = bfd_abs_section_ptr;
1440 cache_ptr->symbol.section = sec;
1441 cache_ptr->symbol.value -= sec->vma;
1446 /* Get the default visibility. This does not apply to all types, so
1447 we just hold it in a local variable to use if wanted. */
1448 if ((cache_ptr->type & N_EXT) == 0)
1449 visible = BSF_LOCAL;
1451 visible = BSF_GLOBAL;
1453 switch (cache_ptr->type)
1456 case N_ABS: case N_ABS | N_EXT:
1457 cache_ptr->symbol.section = bfd_abs_section_ptr;
1458 cache_ptr->symbol.flags = visible;
1461 case N_UNDF | N_EXT:
1462 if (cache_ptr->symbol.value != 0)
1464 /* This is a common symbol. */
1465 cache_ptr->symbol.flags = BSF_GLOBAL;
1466 cache_ptr->symbol.section = bfd_com_section_ptr;
1470 cache_ptr->symbol.flags = 0;
1471 cache_ptr->symbol.section = bfd_und_section_ptr;
1475 case N_TEXT: case N_TEXT | N_EXT:
1476 cache_ptr->symbol.section = obj_textsec (abfd);
1477 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1478 cache_ptr->symbol.flags = visible;
1481 /* N_SETV symbols used to represent set vectors placed in the
1482 data section. They are no longer generated. Theoretically,
1483 it was possible to extract the entries and combine them with
1484 new ones, although I don't know if that was ever actually
1485 done. Unless that feature is restored, treat them as data
1487 case N_SETV: case N_SETV | N_EXT:
1488 case N_DATA: case N_DATA | N_EXT:
1489 cache_ptr->symbol.section = obj_datasec (abfd);
1490 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1491 cache_ptr->symbol.flags = visible;
1494 case N_BSS: case N_BSS | N_EXT:
1495 cache_ptr->symbol.section = obj_bsssec (abfd);
1496 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1497 cache_ptr->symbol.flags = visible;
1500 case N_SETA: case N_SETA | N_EXT:
1501 case N_SETT: case N_SETT | N_EXT:
1502 case N_SETD: case N_SETD | N_EXT:
1503 case N_SETB: case N_SETB | N_EXT:
1505 /* This code is no longer needed. It used to be used to make
1506 the linker handle set symbols, but they are now handled in
1507 the add_symbols routine instead. */
1510 arelent_chain *reloc;
1511 asection *into_section;
1514 /* This is a set symbol. The name of the symbol is the name
1515 of the set (e.g., __CTOR_LIST__). The value of the symbol
1516 is the value to add to the set. We create a section with
1517 the same name as the symbol, and add a reloc to insert the
1518 appropriate value into the section.
1520 This action is actually obsolete; it used to make the
1521 linker do the right thing, but the linker no longer uses
1524 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1525 if (section == NULL)
1529 amt = strlen (cache_ptr->symbol.name) + 1;
1530 copy = bfd_alloc (abfd, amt);
1534 strcpy (copy, cache_ptr->symbol.name);
1535 section = bfd_make_section (abfd, copy);
1536 if (section == NULL)
1540 amt = sizeof (arelent_chain);
1541 reloc = (arelent_chain *) bfd_alloc (abfd, amt);
1545 /* Build a relocation entry for the constructor. */
1546 switch (cache_ptr->type & N_TYPE)
1549 into_section = bfd_abs_section_ptr;
1550 cache_ptr->type = N_ABS;
1553 into_section = obj_textsec (abfd);
1554 cache_ptr->type = N_TEXT;
1557 into_section = obj_datasec (abfd);
1558 cache_ptr->type = N_DATA;
1561 into_section = obj_bsssec (abfd);
1562 cache_ptr->type = N_BSS;
1566 /* Build a relocation pointing into the constructor section
1567 pointing at the symbol in the set vector specified. */
1568 reloc->relent.addend = cache_ptr->symbol.value;
1569 cache_ptr->symbol.section = into_section;
1570 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
1572 /* We modify the symbol to belong to a section depending upon
1573 the name of the symbol, and add to the size of the section
1574 to contain a pointer to the symbol. Build a reloc entry to
1575 relocate to this symbol attached to this section. */
1576 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
1578 section->reloc_count++;
1579 section->alignment_power = 2;
1581 reloc->next = section->constructor_chain;
1582 section->constructor_chain = reloc;
1583 reloc->relent.address = section->_raw_size;
1584 section->_raw_size += BYTES_IN_WORD;
1586 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO (abfd);
1590 switch (cache_ptr->type & N_TYPE)
1593 cache_ptr->symbol.section = bfd_abs_section_ptr;
1596 cache_ptr->symbol.section = obj_textsec (abfd);
1599 cache_ptr->symbol.section = obj_datasec (abfd);
1602 cache_ptr->symbol.section = obj_bsssec (abfd);
1606 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1611 /* This symbol is the text of a warning message. The next
1612 symbol is the symbol to associate the warning with. If a
1613 reference is made to that symbol, a warning is issued. */
1614 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1615 cache_ptr->symbol.section = bfd_abs_section_ptr;
1618 case N_INDR: case N_INDR | N_EXT:
1619 /* An indirect symbol. This consists of two symbols in a row.
1620 The first symbol is the name of the indirection. The second
1621 symbol is the name of the target. A reference to the first
1622 symbol becomes a reference to the second. */
1623 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1624 cache_ptr->symbol.section = bfd_ind_section_ptr;
1628 cache_ptr->symbol.section = bfd_und_section_ptr;
1629 cache_ptr->symbol.flags = BSF_WEAK;
1633 cache_ptr->symbol.section = bfd_abs_section_ptr;
1634 cache_ptr->symbol.flags = BSF_WEAK;
1638 cache_ptr->symbol.section = obj_textsec (abfd);
1639 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1640 cache_ptr->symbol.flags = BSF_WEAK;
1644 cache_ptr->symbol.section = obj_datasec (abfd);
1645 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1646 cache_ptr->symbol.flags = BSF_WEAK;
1650 cache_ptr->symbol.section = obj_bsssec (abfd);
1651 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1652 cache_ptr->symbol.flags = BSF_WEAK;
1659 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1662 translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
1665 struct external_nlist *sym_pointer;
1667 bfd_vma value = cache_ptr->value;
1671 /* Mask out any existing type bits in case copying from one section
1673 sym_pointer->e_type[0] &= ~N_TYPE;
1675 sec = bfd_get_section (cache_ptr);
1680 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1682 (*_bfd_error_handler)
1683 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
1684 bfd_get_filename (abfd),
1685 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1686 bfd_set_error (bfd_error_nonrepresentable_section);
1690 if (sec->output_section != NULL)
1692 off = sec->output_offset;
1693 sec = sec->output_section;
1696 if (bfd_is_abs_section (sec))
1697 sym_pointer->e_type[0] |= N_ABS;
1698 else if (sec == obj_textsec (abfd))
1699 sym_pointer->e_type[0] |= N_TEXT;
1700 else if (sec == obj_datasec (abfd))
1701 sym_pointer->e_type[0] |= N_DATA;
1702 else if (sec == obj_bsssec (abfd))
1703 sym_pointer->e_type[0] |= N_BSS;
1704 else if (bfd_is_und_section (sec))
1705 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1706 else if (bfd_is_ind_section (sec))
1707 sym_pointer->e_type[0] = N_INDR;
1708 else if (bfd_is_com_section (sec))
1709 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1712 if (aout_section_merge_with_text_p (abfd, sec))
1713 sym_pointer->e_type[0] |= N_TEXT;
1716 (*_bfd_error_handler)
1717 (_("%s: can not represent section `%s' in a.out object file format"),
1718 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1719 bfd_set_error (bfd_error_nonrepresentable_section);
1724 /* Turn the symbol from section relative to absolute again. */
1725 value += sec->vma + off;
1727 if ((cache_ptr->flags & BSF_WARNING) != 0)
1728 sym_pointer->e_type[0] = N_WARNING;
1730 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1731 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1732 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1733 sym_pointer->e_type[0] |= N_EXT;
1734 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1735 sym_pointer->e_type[0] &= ~N_EXT;
1737 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1739 int type = ((aout_symbol_type *) cache_ptr)->type;
1743 case N_ABS: type = N_SETA; break;
1744 case N_TEXT: type = N_SETT; break;
1745 case N_DATA: type = N_SETD; break;
1746 case N_BSS: type = N_SETB; break;
1748 sym_pointer->e_type[0] = type;
1751 if ((cache_ptr->flags & BSF_WEAK) != 0)
1755 switch (sym_pointer->e_type[0] & N_TYPE)
1758 case N_ABS: type = N_WEAKA; break;
1759 case N_TEXT: type = N_WEAKT; break;
1760 case N_DATA: type = N_WEAKD; break;
1761 case N_BSS: type = N_WEAKB; break;
1762 case N_UNDF: type = N_WEAKU; break;
1764 sym_pointer->e_type[0] = type;
1767 PUT_WORD (abfd, value, sym_pointer->e_value);
1772 /* Native-level interface to symbols. */
1775 NAME(aout,make_empty_symbol) (abfd)
1778 bfd_size_type amt = sizeof (aout_symbol_type);
1779 aout_symbol_type *new = (aout_symbol_type *) bfd_zalloc (abfd, amt);
1782 new->symbol.the_bfd = abfd;
1784 return &new->symbol;
1787 /* Translate a set of internal symbols into external symbols. */
1790 NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
1792 aout_symbol_type *in;
1793 struct external_nlist *ext;
1794 bfd_size_type count;
1796 bfd_size_type strsize;
1797 bfd_boolean dynamic;
1799 struct external_nlist *ext_end;
1801 ext_end = ext + count;
1802 for (; ext < ext_end; ext++, in++)
1806 x = GET_WORD (abfd, ext->e_strx);
1807 in->symbol.the_bfd = abfd;
1809 /* For the normal symbols, the zero index points at the number
1810 of bytes in the string table but is to be interpreted as the
1811 null string. For the dynamic symbols, the number of bytes in
1812 the string table is stored in the __DYNAMIC structure and the
1813 zero index points at an actual string. */
1814 if (x == 0 && ! dynamic)
1815 in->symbol.name = "";
1816 else if (x < strsize)
1817 in->symbol.name = str + x;
1821 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1822 in->desc = H_GET_16 (abfd, ext->e_desc);
1823 in->other = H_GET_8 (abfd, ext->e_other);
1824 in->type = H_GET_8 (abfd, ext->e_type);
1825 in->symbol.udata.p = NULL;
1827 if (! translate_from_native_sym_flags (abfd, in))
1831 in->symbol.flags |= BSF_DYNAMIC;
1837 /* We read the symbols into a buffer, which is discarded when this
1838 function exits. We read the strings into a buffer large enough to
1839 hold them all plus all the cached symbol entries. */
1842 NAME(aout,slurp_symbol_table) (abfd)
1845 struct external_nlist *old_external_syms;
1846 aout_symbol_type *cached;
1847 bfd_size_type cached_size;
1849 /* If there's no work to be done, don't do any. */
1850 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1853 old_external_syms = obj_aout_external_syms (abfd);
1855 if (! aout_get_external_symbols (abfd))
1858 cached_size = obj_aout_external_sym_count (abfd);
1859 cached_size *= sizeof (aout_symbol_type);
1860 cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
1861 if (cached == NULL && cached_size != 0)
1864 /* Convert from external symbol information to internal. */
1865 if (! (NAME(aout,translate_symbol_table)
1867 obj_aout_external_syms (abfd),
1868 obj_aout_external_sym_count (abfd),
1869 obj_aout_external_strings (abfd),
1870 obj_aout_external_string_size (abfd),
1877 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1879 obj_aout_symbols (abfd) = cached;
1881 /* It is very likely that anybody who calls this function will not
1882 want the external symbol information, so if it was allocated
1883 because of our call to aout_get_external_symbols, we free it up
1884 right away to save space. */
1885 if (old_external_syms == (struct external_nlist *) NULL
1886 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1889 bfd_free_window (&obj_aout_sym_window (abfd));
1891 free (obj_aout_external_syms (abfd));
1893 obj_aout_external_syms (abfd) = NULL;
1899 /* We use a hash table when writing out symbols so that we only write
1900 out a particular string once. This helps particularly when the
1901 linker writes out stabs debugging entries, because each different
1902 contributing object file tends to have many duplicate stabs
1905 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1906 if BFD_TRADITIONAL_FORMAT is set. */
1908 static bfd_size_type add_to_stringtab
1909 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, bfd_boolean));
1910 static bfd_boolean emit_stringtab
1911 PARAMS ((bfd *, struct bfd_strtab_hash *));
1913 /* Get the index of a string in a strtab, adding it if it is not
1916 static INLINE bfd_size_type
1917 add_to_stringtab (abfd, tab, str, copy)
1919 struct bfd_strtab_hash *tab;
1924 bfd_size_type index;
1926 /* An index of 0 always means the empty string. */
1927 if (str == 0 || *str == '\0')
1930 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1931 doesn't understand a hashed string table. */
1933 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1936 index = _bfd_stringtab_add (tab, str, hash, copy);
1938 if (index != (bfd_size_type) -1)
1940 /* Add BYTES_IN_WORD to the return value to account for the
1941 space taken up by the string table size. */
1942 index += BYTES_IN_WORD;
1948 /* Write out a strtab. ABFD is already at the right location in the
1952 emit_stringtab (abfd, tab)
1954 struct bfd_strtab_hash *tab;
1956 bfd_byte buffer[BYTES_IN_WORD];
1957 bfd_size_type amt = BYTES_IN_WORD;
1959 /* The string table starts with the size. */
1960 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
1961 if (bfd_bwrite ((PTR) buffer, amt, abfd) != amt)
1964 return _bfd_stringtab_emit (abfd, tab);
1968 NAME(aout,write_syms) (abfd)
1971 unsigned int count ;
1972 asymbol **generic = bfd_get_outsymbols (abfd);
1973 struct bfd_strtab_hash *strtab;
1975 strtab = _bfd_stringtab_init ();
1979 for (count = 0; count < bfd_get_symcount (abfd); count++)
1981 asymbol *g = generic[count];
1983 struct external_nlist nsp;
1986 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
1987 if (indx == (bfd_size_type) -1)
1989 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1991 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
1993 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1994 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1995 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
1999 H_PUT_16 (abfd, 0, nsp.e_desc);
2000 H_PUT_8 (abfd, 0, nsp.e_other);
2001 H_PUT_8 (abfd, 0, nsp.e_type);
2004 if (! translate_to_native_sym_flags (abfd, g, &nsp))
2007 amt = EXTERNAL_NLIST_SIZE;
2008 if (bfd_bwrite ((PTR) &nsp, amt, abfd) != amt)
2011 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
2012 here, at the end. */
2016 if (! emit_stringtab (abfd, strtab))
2019 _bfd_stringtab_free (strtab);
2024 _bfd_stringtab_free (strtab);
2029 NAME(aout,get_symtab) (abfd, location)
2033 unsigned int counter = 0;
2034 aout_symbol_type *symbase;
2036 if (!NAME(aout,slurp_symbol_table) (abfd))
2039 for (symbase = obj_aout_symbols (abfd);
2040 counter++ < bfd_get_symcount (abfd);
2042 *(location++) = (asymbol *) (symbase++);
2044 return bfd_get_symcount (abfd);
2047 /* Standard reloc stuff. */
2048 /* Output standard relocation information to a file in target byte order. */
2050 extern void NAME(aout,swap_std_reloc_out)
2051 PARAMS ((bfd *, arelent *, struct reloc_std_external *));
2054 NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
2057 struct reloc_std_external *natptr;
2060 asymbol *sym = *(g->sym_ptr_ptr);
2062 unsigned int r_length;
2064 int r_baserel, r_jmptable, r_relative;
2065 asection *output_section = sym->section->output_section;
2067 PUT_WORD (abfd, g->address, natptr->r_address);
2069 r_length = g->howto->size ; /* Size as a power of two. */
2070 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
2071 /* XXX This relies on relocs coming from a.out files. */
2072 r_baserel = (g->howto->type & 8) != 0;
2073 r_jmptable = (g->howto->type & 16) != 0;
2074 r_relative = (g->howto->type & 32) != 0;
2077 /* For a standard reloc, the addend is in the object file. */
2078 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
2081 /* Name was clobbered by aout_write_syms to be symbol index. */
2083 /* If this relocation is relative to a symbol then set the
2084 r_index to the symbols index, and the r_extern bit.
2086 Absolute symbols can come in in two ways, either as an offset
2087 from the abs section, or as a symbol which has an abs value.
2088 check for that here. */
2090 if (bfd_is_com_section (output_section)
2091 || bfd_is_abs_section (output_section)
2092 || bfd_is_und_section (output_section))
2094 if (bfd_abs_section_ptr->symbol == sym)
2096 /* Whoops, looked like an abs symbol, but is
2097 really an offset from the abs section. */
2103 /* Fill in symbol. */
2105 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2110 /* Just an ordinary section. */
2112 r_index = output_section->target_index;
2115 /* Now the fun stuff. */
2116 if (bfd_header_big_endian (abfd))
2118 natptr->r_index[0] = r_index >> 16;
2119 natptr->r_index[1] = r_index >> 8;
2120 natptr->r_index[2] = r_index;
2121 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
2122 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
2123 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
2124 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
2125 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
2126 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
2130 natptr->r_index[2] = r_index >> 16;
2131 natptr->r_index[1] = r_index >> 8;
2132 natptr->r_index[0] = r_index;
2133 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2134 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2135 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2136 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2137 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2138 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2142 /* Extended stuff. */
2143 /* Output extended relocation information to a file in target byte order. */
2145 extern void NAME(aout,swap_ext_reloc_out)
2146 PARAMS ((bfd *, arelent *, struct reloc_ext_external *));
2149 NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2152 register struct reloc_ext_external *natptr;
2156 unsigned int r_type;
2158 asymbol *sym = *(g->sym_ptr_ptr);
2159 asection *output_section = sym->section->output_section;
2161 PUT_WORD (abfd, g->address, natptr->r_address);
2163 r_type = (unsigned int) g->howto->type;
2165 r_addend = g->addend;
2166 if ((sym->flags & BSF_SECTION_SYM) != 0)
2167 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2169 /* If this relocation is relative to a symbol then set the
2170 r_index to the symbols index, and the r_extern bit.
2172 Absolute symbols can come in in two ways, either as an offset
2173 from the abs section, or as a symbol which has an abs value.
2174 check for that here. */
2175 if (bfd_is_abs_section (bfd_get_section (sym)))
2180 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2182 if (bfd_is_und_section (bfd_get_section (sym))
2183 || (sym->flags & BSF_GLOBAL) != 0)
2187 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2191 /* Just an ordinary section. */
2193 r_index = output_section->target_index;
2196 /* Now the fun stuff. */
2197 if (bfd_header_big_endian (abfd))
2199 natptr->r_index[0] = r_index >> 16;
2200 natptr->r_index[1] = r_index >> 8;
2201 natptr->r_index[2] = r_index;
2202 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2203 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2207 natptr->r_index[2] = r_index >> 16;
2208 natptr->r_index[1] = r_index >> 8;
2209 natptr->r_index[0] = r_index;
2210 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2211 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2214 PUT_WORD (abfd, r_addend, natptr->r_addend);
2217 /* BFD deals internally with all things based from the section they're
2218 in. so, something in 10 bytes into a text section with a base of
2219 50 would have a symbol (.text+10) and know .text vma was 50.
2221 Aout keeps all it's symbols based from zero, so the symbol would
2222 contain 60. This macro subs the base of each section from the value
2223 to give the true offset from the section. */
2225 #define MOVE_ADDRESS(ad) \
2228 /* Undefined symbol. */ \
2229 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2230 cache_ptr->addend = ad; \
2234 /* Defined, section relative. Replace symbol with pointer to \
2235 symbol which points to section. */ \
2239 case N_TEXT | N_EXT: \
2240 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2241 cache_ptr->addend = ad - su->textsec->vma; \
2244 case N_DATA | N_EXT: \
2245 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2246 cache_ptr->addend = ad - su->datasec->vma; \
2249 case N_BSS | N_EXT: \
2250 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2251 cache_ptr->addend = ad - su->bsssec->vma; \
2255 case N_ABS | N_EXT: \
2256 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2257 cache_ptr->addend = ad; \
2263 NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
2265 struct reloc_ext_external *bytes;
2268 bfd_size_type symcount;
2270 unsigned int r_index;
2272 unsigned int r_type;
2273 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2275 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2277 /* Now the fun stuff. */
2278 if (bfd_header_big_endian (abfd))
2280 r_index = (((unsigned int) bytes->r_index[0] << 16)
2281 | ((unsigned int) bytes->r_index[1] << 8)
2282 | bytes->r_index[2]);
2283 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2284 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2285 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2289 r_index = (((unsigned int) bytes->r_index[2] << 16)
2290 | ((unsigned int) bytes->r_index[1] << 8)
2291 | bytes->r_index[0]);
2292 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2293 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2294 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2297 cache_ptr->howto = howto_table_ext + r_type;
2299 /* Base relative relocs are always against the symbol table,
2300 regardless of the setting of r_extern. r_extern just reflects
2301 whether the symbol the reloc is against is local or global. */
2302 if (r_type == (unsigned int) RELOC_BASE10
2303 || r_type == (unsigned int) RELOC_BASE13
2304 || r_type == (unsigned int) RELOC_BASE22)
2307 if (r_extern && r_index > symcount)
2309 /* We could arrange to return an error, but it might be useful
2310 to see the file even if it is bad. */
2315 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
2319 NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
2321 struct reloc_std_external *bytes;
2324 bfd_size_type symcount;
2326 unsigned int r_index;
2328 unsigned int r_length;
2330 int r_baserel, r_jmptable, r_relative;
2331 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2332 unsigned int howto_idx;
2334 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
2336 /* Now the fun stuff. */
2337 if (bfd_header_big_endian (abfd))
2339 r_index = (((unsigned int) bytes->r_index[0] << 16)
2340 | ((unsigned int) bytes->r_index[1] << 8)
2341 | bytes->r_index[2]);
2342 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2343 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2344 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2345 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2346 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2347 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2348 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2352 r_index = (((unsigned int) bytes->r_index[2] << 16)
2353 | ((unsigned int) bytes->r_index[1] << 8)
2354 | bytes->r_index[0]);
2355 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2356 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2357 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2358 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2359 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2360 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2361 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2364 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2365 + 16 * r_jmptable + 32 * r_relative);
2366 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2367 cache_ptr->howto = howto_table_std + howto_idx;
2368 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
2370 /* Base relative relocs are always against the symbol table,
2371 regardless of the setting of r_extern. r_extern just reflects
2372 whether the symbol the reloc is against is local or global. */
2376 if (r_extern && r_index > symcount)
2378 /* We could arrange to return an error, but it might be useful
2379 to see the file even if it is bad. */
2387 /* Read and swap the relocs for a section. */
2390 NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2395 bfd_size_type count;
2396 bfd_size_type reloc_size;
2398 arelent *reloc_cache;
2400 unsigned int counter = 0;
2404 if (asect->relocation)
2407 if (asect->flags & SEC_CONSTRUCTOR)
2410 if (asect == obj_datasec (abfd))
2411 reloc_size = exec_hdr (abfd)->a_drsize;
2412 else if (asect == obj_textsec (abfd))
2413 reloc_size = exec_hdr (abfd)->a_trsize;
2414 else if (asect == obj_bsssec (abfd))
2418 bfd_set_error (bfd_error_invalid_operation);
2422 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2425 each_size = obj_reloc_entry_size (abfd);
2427 count = reloc_size / each_size;
2429 amt = count * sizeof (arelent);
2430 reloc_cache = (arelent *) bfd_zmalloc (amt);
2431 if (reloc_cache == NULL && count != 0)
2434 relocs = bfd_malloc (reloc_size);
2435 if (relocs == NULL && reloc_size != 0)
2441 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
2448 cache_ptr = reloc_cache;
2449 if (each_size == RELOC_EXT_SIZE)
2451 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
2453 for (; counter < count; counter++, rptr++, cache_ptr++)
2454 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
2455 (bfd_size_type) bfd_get_symcount (abfd));
2459 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
2461 for (; counter < count; counter++, rptr++, cache_ptr++)
2462 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2463 (bfd_size_type) bfd_get_symcount (abfd));
2468 asect->relocation = reloc_cache;
2469 asect->reloc_count = cache_ptr - reloc_cache;
2474 /* Write out a relocation section into an object file. */
2477 NAME(aout,squirt_out_relocs) (abfd, section)
2482 unsigned char *native, *natptr;
2485 unsigned int count = section->reloc_count;
2486 bfd_size_type natsize;
2488 if (count == 0 || section->orelocation == NULL)
2491 each_size = obj_reloc_entry_size (abfd);
2492 natsize = (bfd_size_type) each_size * count;
2493 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2497 generic = section->orelocation;
2499 if (each_size == RELOC_EXT_SIZE)
2501 for (natptr = native;
2503 --count, natptr += each_size, ++generic)
2504 MY_swap_ext_reloc_out (abfd, *generic,
2505 (struct reloc_ext_external *) natptr);
2509 for (natptr = native;
2511 --count, natptr += each_size, ++generic)
2512 MY_swap_std_reloc_out (abfd, *generic,
2513 (struct reloc_std_external *) natptr);
2516 if (bfd_bwrite ((PTR) native, natsize, abfd) != natsize)
2518 bfd_release (abfd, native);
2521 bfd_release (abfd, native);
2526 /* This is stupid. This function should be a boolean predicate. */
2529 NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2535 arelent *tblptr = section->relocation;
2538 if (section == obj_bsssec (abfd))
2544 if (!(tblptr || NAME(aout,slurp_reloc_table) (abfd, section, symbols)))
2547 if (section->flags & SEC_CONSTRUCTOR)
2549 arelent_chain *chain = section->constructor_chain;
2550 for (count = 0; count < section->reloc_count; count ++)
2552 *relptr ++ = &chain->relent;
2553 chain = chain->next;
2558 tblptr = section->relocation;
2560 for (count = 0; count++ < section->reloc_count; )
2562 *relptr++ = tblptr++;
2567 return section->reloc_count;
2571 NAME(aout,get_reloc_upper_bound) (abfd, asect)
2575 if (bfd_get_format (abfd) != bfd_object)
2577 bfd_set_error (bfd_error_invalid_operation);
2581 if (asect->flags & SEC_CONSTRUCTOR)
2582 return (sizeof (arelent *) * (asect->reloc_count+1));
2584 if (asect == obj_datasec (abfd))
2585 return (sizeof (arelent *)
2586 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2589 if (asect == obj_textsec (abfd))
2590 return (sizeof (arelent *)
2591 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2594 if (asect == obj_bsssec (abfd))
2595 return sizeof (arelent *);
2597 if (asect == obj_bsssec (abfd))
2600 bfd_set_error (bfd_error_invalid_operation);
2605 NAME(aout,get_symtab_upper_bound) (abfd)
2608 if (!NAME(aout,slurp_symbol_table) (abfd))
2611 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2615 NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2616 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2617 asymbol *ignore_symbol ATTRIBUTE_UNUSED;
2619 return (alent *)NULL;
2623 NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2624 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2628 bfd_symbol_info (symbol, ret);
2630 if (ret->type == '?')
2632 int type_code = aout_symbol (symbol)->type & 0xff;
2633 const char *stab_name = bfd_get_stab_name (type_code);
2634 static char buf[10];
2636 if (stab_name == NULL)
2638 sprintf (buf, "(%d)", type_code);
2642 ret->stab_type = type_code;
2643 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2644 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
2645 ret->stab_name = stab_name;
2650 NAME(aout,print_symbol) (abfd, afile, symbol, how)
2654 bfd_print_symbol_type how;
2656 FILE *file = (FILE *)afile;
2660 case bfd_print_symbol_name:
2662 fprintf (file,"%s", symbol->name);
2664 case bfd_print_symbol_more:
2665 fprintf (file,"%4x %2x %2x",
2666 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2667 (unsigned) (aout_symbol (symbol)->other & 0xff),
2668 (unsigned) (aout_symbol (symbol)->type));
2670 case bfd_print_symbol_all:
2672 const char *section_name = symbol->section->name;
2674 bfd_print_symbol_vandf (abfd, (PTR)file, symbol);
2676 fprintf (file," %-5s %04x %02x %02x",
2678 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2679 (unsigned) (aout_symbol (symbol)->other & 0xff),
2680 (unsigned) (aout_symbol (symbol)->type & 0xff));
2682 fprintf (file," %s", symbol->name);
2688 /* If we don't have to allocate more than 1MB to hold the generic
2689 symbols, we use the generic minisymbol methord: it's faster, since
2690 it only translates the symbols once, not multiple times. */
2691 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2693 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2694 symbols. The minisymbol_to_symbol function translates these into
2695 BFD asymbol structures. */
2698 NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2700 bfd_boolean dynamic;
2702 unsigned int *sizep;
2706 /* We could handle the dynamic symbols here as well, but it's
2707 easier to hand them off. */
2708 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2711 if (! aout_get_external_symbols (abfd))
2714 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2715 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2717 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2719 /* By passing the external symbols back from this routine, we are
2720 giving up control over the memory block. Clear
2721 obj_aout_external_syms, so that we do not try to free it
2723 obj_aout_external_syms (abfd) = NULL;
2725 *sizep = EXTERNAL_NLIST_SIZE;
2726 return obj_aout_external_sym_count (abfd);
2729 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2730 unmodified a.out symbol. The SYM argument is a structure returned
2731 by bfd_make_empty_symbol, which we fill in here. */
2734 NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2736 bfd_boolean dynamic;
2741 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2742 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2744 memset (sym, 0, sizeof (aout_symbol_type));
2746 /* We call translate_symbol_table to translate a single symbol. */
2747 if (! (NAME(aout,translate_symbol_table)
2749 (aout_symbol_type *) sym,
2750 (struct external_nlist *) minisym,
2752 obj_aout_external_strings (abfd),
2753 obj_aout_external_string_size (abfd),
2760 /* Provided a BFD, a section and an offset into the section, calculate
2761 and return the name of the source file and the line nearest to the
2765 NAME(aout,find_nearest_line)
2766 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2771 const char **filename_ptr;
2772 const char **functionname_ptr;
2773 unsigned int *line_ptr;
2775 /* Run down the file looking for the filename, function and linenumber. */
2777 const char *directory_name = NULL;
2778 const char *main_file_name = NULL;
2779 const char *current_file_name = NULL;
2780 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
2781 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
2782 bfd_vma low_line_vma = 0;
2783 bfd_vma low_func_vma = 0;
2785 bfd_size_type filelen, funclen;
2788 *filename_ptr = abfd->filename;
2789 *functionname_ptr = 0;
2792 if (symbols != (asymbol **)NULL)
2794 for (p = symbols; *p; p++)
2796 aout_symbol_type *q = (aout_symbol_type *) (*p);
2801 /* If this looks like a file name symbol, and it comes after
2802 the line number we have found so far, but before the
2803 offset, then we have probably not found the right line
2805 if (q->symbol.value <= offset
2806 && ((q->symbol.value > low_line_vma
2807 && (line_file_name != NULL
2809 || (q->symbol.value > low_func_vma
2812 const char *symname;
2814 symname = q->symbol.name;
2815 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2817 if (q->symbol.value > low_line_vma)
2820 line_file_name = NULL;
2822 if (q->symbol.value > low_func_vma)
2829 /* If this symbol is less than the offset, but greater than
2830 the line number we have found so far, then we have not
2831 found the right line number. */
2832 if (q->symbol.value <= offset)
2834 if (q->symbol.value > low_line_vma)
2837 line_file_name = NULL;
2839 if (q->symbol.value > low_func_vma)
2843 main_file_name = current_file_name = q->symbol.name;
2844 /* Look ahead to next symbol to check if that too is an N_SO. */
2848 q = (aout_symbol_type *) (*p);
2849 if (q->type != (int)N_SO)
2852 /* Found a second N_SO First is directory; second is filename. */
2853 directory_name = current_file_name;
2854 main_file_name = current_file_name = q->symbol.name;
2855 if (obj_textsec (abfd) != section)
2859 current_file_name = q->symbol.name;
2866 /* We'll keep this if it resolves nearer than the one we have
2868 if (q->symbol.value >= low_line_vma
2869 && q->symbol.value <= offset)
2871 *line_ptr = q->desc;
2872 low_line_vma = q->symbol.value;
2873 line_file_name = current_file_name;
2874 line_directory_name = directory_name;
2879 /* We'll keep this if it is nearer than the one we have already. */
2880 if (q->symbol.value >= low_func_vma &&
2881 q->symbol.value <= offset)
2883 low_func_vma = q->symbol.value;
2884 func = (asymbol *)q;
2886 else if (q->symbol.value > offset)
2897 main_file_name = line_file_name;
2898 directory_name = line_directory_name;
2901 if (main_file_name == NULL
2902 || IS_ABSOLUTE_PATH (main_file_name)
2903 || directory_name == NULL)
2906 filelen = strlen (directory_name) + strlen (main_file_name);
2911 funclen = strlen (bfd_asymbol_name (func));
2913 if (adata (abfd).line_buf != NULL)
2914 free (adata (abfd).line_buf);
2916 if (filelen + funclen == 0)
2917 adata (abfd).line_buf = buf = NULL;
2920 buf = (char *) bfd_malloc (filelen + funclen + 3);
2921 adata (abfd).line_buf = buf;
2926 if (main_file_name != NULL)
2928 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
2929 *filename_ptr = main_file_name;
2932 sprintf (buf, "%s%s", directory_name, main_file_name);
2933 *filename_ptr = buf;
2940 const char *function = func->name;
2943 /* The caller expects a symbol name. We actually have a
2944 function name, without the leading underscore. Put the
2945 underscore back in, so that the caller gets a symbol name. */
2946 if (bfd_get_symbol_leading_char (abfd) == '\0')
2947 strcpy (buf, function);
2950 buf[0] = bfd_get_symbol_leading_char (abfd);
2951 strcpy (buf + 1, function);
2953 /* Have to remove : stuff. */
2954 colon = strchr (buf, ':');
2957 *functionname_ptr = buf;
2964 NAME(aout,sizeof_headers) (abfd, execable)
2966 bfd_boolean execable ATTRIBUTE_UNUSED;
2968 return adata (abfd).exec_bytes_size;
2971 /* Free all information we have cached for this BFD. We can always
2972 read it again later if we need it. */
2975 NAME(aout,bfd_free_cached_info) (abfd)
2980 if (bfd_get_format (abfd) != bfd_object
2981 || abfd->tdata.aout_data == NULL)
2984 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2985 BFCI_FREE (obj_aout_symbols (abfd));
2987 obj_aout_external_syms (abfd) = 0;
2988 bfd_free_window (&obj_aout_sym_window (abfd));
2989 bfd_free_window (&obj_aout_string_window (abfd));
2990 obj_aout_external_strings (abfd) = 0;
2992 BFCI_FREE (obj_aout_external_syms (abfd));
2993 BFCI_FREE (obj_aout_external_strings (abfd));
2995 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
2996 BFCI_FREE (o->relocation);
3002 /* a.out link code. */
3004 static bfd_boolean aout_link_add_object_symbols
3005 PARAMS ((bfd *, struct bfd_link_info *));
3006 static bfd_boolean aout_link_check_archive_element
3007 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
3008 static bfd_boolean aout_link_free_symbols
3010 static bfd_boolean aout_link_check_ar_symbols
3011 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded));
3012 static bfd_boolean aout_link_add_symbols
3013 PARAMS ((bfd *, struct bfd_link_info *));
3015 /* Routine to create an entry in an a.out link hash table. */
3017 struct bfd_hash_entry *
3018 NAME(aout,link_hash_newfunc) (entry, table, string)
3019 struct bfd_hash_entry *entry;
3020 struct bfd_hash_table *table;
3023 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
3025 /* Allocate the structure if it has not already been allocated by a
3027 if (ret == (struct aout_link_hash_entry *) NULL)
3028 ret = ((struct aout_link_hash_entry *)
3029 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
3030 if (ret == (struct aout_link_hash_entry *) NULL)
3031 return (struct bfd_hash_entry *) ret;
3033 /* Call the allocation method of the superclass. */
3034 ret = ((struct aout_link_hash_entry *)
3035 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3039 /* Set local fields. */
3040 ret->written = FALSE;
3044 return (struct bfd_hash_entry *) ret;
3047 /* Initialize an a.out link hash table. */
3050 NAME(aout,link_hash_table_init) (table, abfd, newfunc)
3051 struct aout_link_hash_table *table;
3053 struct bfd_hash_entry *(*newfunc)
3054 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
3057 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
3060 /* Create an a.out link hash table. */
3062 struct bfd_link_hash_table *
3063 NAME(aout,link_hash_table_create) (abfd)
3066 struct aout_link_hash_table *ret;
3067 bfd_size_type amt = sizeof (struct aout_link_hash_table);
3069 ret = (struct aout_link_hash_table *) bfd_alloc (abfd, amt);
3071 return (struct bfd_link_hash_table *) NULL;
3072 if (! NAME(aout,link_hash_table_init) (ret, abfd,
3073 NAME(aout,link_hash_newfunc)))
3076 return (struct bfd_link_hash_table *) NULL;
3081 /* Given an a.out BFD, add symbols to the global hash table as
3085 NAME(aout,link_add_symbols) (abfd, info)
3087 struct bfd_link_info *info;
3089 switch (bfd_get_format (abfd))
3092 return aout_link_add_object_symbols (abfd, info);
3094 return _bfd_generic_link_add_archive_symbols
3095 (abfd, info, aout_link_check_archive_element);
3097 bfd_set_error (bfd_error_wrong_format);
3102 /* Add symbols from an a.out object file. */
3105 aout_link_add_object_symbols (abfd, info)
3107 struct bfd_link_info *info;
3109 if (! aout_get_external_symbols (abfd))
3111 if (! aout_link_add_symbols (abfd, info))
3113 if (! info->keep_memory)
3115 if (! aout_link_free_symbols (abfd))
3121 /* Check a single archive element to see if we need to include it in
3122 the link. *PNEEDED is set according to whether this element is
3123 needed in the link or not. This is called from
3124 _bfd_generic_link_add_archive_symbols. */
3127 aout_link_check_archive_element (abfd, info, pneeded)
3129 struct bfd_link_info *info;
3130 bfd_boolean *pneeded;
3132 if (! aout_get_external_symbols (abfd))
3135 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
3140 if (! aout_link_add_symbols (abfd, info))
3144 if (! info->keep_memory || ! *pneeded)
3146 if (! aout_link_free_symbols (abfd))
3153 /* Free up the internal symbols read from an a.out file. */
3156 aout_link_free_symbols (abfd)
3159 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
3162 bfd_free_window (&obj_aout_sym_window (abfd));
3164 free ((PTR) obj_aout_external_syms (abfd));
3166 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
3168 if (obj_aout_external_strings (abfd) != (char *) NULL)
3171 bfd_free_window (&obj_aout_string_window (abfd));
3173 free ((PTR) obj_aout_external_strings (abfd));
3175 obj_aout_external_strings (abfd) = (char *) NULL;
3180 /* Look through the internal symbols to see if this object file should
3181 be included in the link. We should include this object file if it
3182 defines any symbols which are currently undefined. If this object
3183 file defines a common symbol, then we may adjust the size of the
3184 known symbol but we do not include the object file in the link
3185 (unless there is some other reason to include it). */
3188 aout_link_check_ar_symbols (abfd, info, pneeded)
3190 struct bfd_link_info *info;
3191 bfd_boolean *pneeded;
3193 register struct external_nlist *p;
3194 struct external_nlist *pend;
3199 /* Look through all the symbols. */
3200 p = obj_aout_external_syms (abfd);
3201 pend = p + obj_aout_external_sym_count (abfd);
3202 strings = obj_aout_external_strings (abfd);
3203 for (; p < pend; p++)
3205 int type = H_GET_8 (abfd, p->e_type);
3207 struct bfd_link_hash_entry *h;
3209 /* Ignore symbols that are not externally visible. This is an
3210 optimization only, as we check the type more thoroughly
3212 if (((type & N_EXT) == 0
3213 || (type & N_STAB) != 0
3220 if (type == N_WARNING
3226 name = strings + GET_WORD (abfd, p->e_strx);
3227 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3229 /* We are only interested in symbols that are currently
3230 undefined or common. */
3231 if (h == (struct bfd_link_hash_entry *) NULL
3232 || (h->type != bfd_link_hash_undefined
3233 && h->type != bfd_link_hash_common))
3235 if (type == (N_INDR | N_EXT))
3240 if (type == (N_TEXT | N_EXT)
3241 || type == (N_DATA | N_EXT)
3242 || type == (N_BSS | N_EXT)
3243 || type == (N_ABS | N_EXT)
3244 || type == (N_INDR | N_EXT))
3246 /* This object file defines this symbol. We must link it
3247 in. This is true regardless of whether the current
3248 definition of the symbol is undefined or common.
3250 If the current definition is common, we have a case in
3251 which we have already seen an object file including:
3253 and this object file from the archive includes:
3255 In such a case, whether to include this object is target
3256 dependant for backward compatability.
3258 FIXME: The SunOS 4.1.3 linker will pull in the archive
3259 element if the symbol is defined in the .data section,
3260 but not if it is defined in the .text section. That
3261 seems a bit crazy to me, and it has not been implemented
3262 yet. However, it might be correct. */
3263 if (h->type == bfd_link_hash_common)
3267 switch (info->common_skip_ar_aymbols)
3269 case bfd_link_common_skip_text:
3270 skip = (type == (N_TEXT | N_EXT));
3272 case bfd_link_common_skip_data:
3273 skip = (type == (N_DATA | N_EXT));
3276 case bfd_link_common_skip_all:
3285 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3291 if (type == (N_UNDF | N_EXT))
3295 value = GET_WORD (abfd, p->e_value);
3298 /* This symbol is common in the object from the archive
3300 if (h->type == bfd_link_hash_undefined)
3305 symbfd = h->u.undef.abfd;
3306 if (symbfd == (bfd *) NULL)
3308 /* This symbol was created as undefined from
3309 outside BFD. We assume that we should link
3310 in the object file. This is done for the -u
3311 option in the linker. */
3312 if (! (*info->callbacks->add_archive_element) (info,
3319 /* Turn the current link symbol into a common
3320 symbol. It is already on the undefs list. */
3321 h->type = bfd_link_hash_common;
3322 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3323 bfd_hash_allocate (&info->hash->table,
3324 sizeof (struct bfd_link_hash_common_entry)));
3325 if (h->u.c.p == NULL)
3328 h->u.c.size = value;
3330 /* FIXME: This isn't quite right. The maximum
3331 alignment of a common symbol should be set by the
3332 architecture of the output file, not of the input
3334 power = bfd_log2 (value);
3335 if (power > bfd_get_arch_info (abfd)->section_align_power)
3336 power = bfd_get_arch_info (abfd)->section_align_power;
3337 h->u.c.p->alignment_power = power;
3339 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3344 /* Adjust the size of the common symbol if
3346 if (value > h->u.c.size)
3347 h->u.c.size = value;
3357 /* This symbol is weak but defined. We must pull it in if
3358 the current link symbol is undefined, but we don't want
3359 it if the current link symbol is common. */
3360 if (h->type == bfd_link_hash_undefined)
3362 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3370 /* We do not need this object file. */
3374 /* Add all symbols from an object file to the hash table. */
3377 aout_link_add_symbols (abfd, info)
3379 struct bfd_link_info *info;
3381 bfd_boolean (*add_one_symbol)
3382 PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, asection *,
3383 bfd_vma, const char *, bfd_boolean, bfd_boolean,
3384 struct bfd_link_hash_entry **));
3385 struct external_nlist *syms;
3386 bfd_size_type sym_count;
3389 struct aout_link_hash_entry **sym_hash;
3390 register struct external_nlist *p;
3391 struct external_nlist *pend;
3394 syms = obj_aout_external_syms (abfd);
3395 sym_count = obj_aout_external_sym_count (abfd);
3396 strings = obj_aout_external_strings (abfd);
3397 if (info->keep_memory)
3402 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3404 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3405 (abfd, info, &syms, &sym_count, &strings)))
3409 /* We keep a list of the linker hash table entries that correspond
3410 to particular symbols. We could just look them up in the hash
3411 table, but keeping the list is more efficient. Perhaps this
3412 should be conditional on info->keep_memory. */
3413 amt = sym_count * sizeof (struct aout_link_hash_entry *);
3414 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
3415 if (sym_hash == NULL && sym_count != 0)
3417 obj_aout_sym_hashes (abfd) = sym_hash;
3419 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3420 if (add_one_symbol == NULL)
3421 add_one_symbol = _bfd_generic_link_add_one_symbol;
3424 pend = p + sym_count;
3425 for (; p < pend; p++, sym_hash++)
3436 type = H_GET_8 (abfd, p->e_type);
3438 /* Ignore debugging symbols. */
3439 if ((type & N_STAB) != 0)
3442 name = strings + GET_WORD (abfd, p->e_strx);
3443 value = GET_WORD (abfd, p->e_value);
3460 /* Ignore symbols that are not externally visible. */
3463 /* Ignore local indirect symbol. */
3468 case N_UNDF | N_EXT:
3471 section = bfd_und_section_ptr;
3475 section = bfd_com_section_ptr;
3478 section = bfd_abs_section_ptr;
3480 case N_TEXT | N_EXT:
3481 section = obj_textsec (abfd);
3482 value -= bfd_get_section_vma (abfd, section);
3484 case N_DATA | N_EXT:
3485 case N_SETV | N_EXT:
3486 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3487 translate_from_native_sym_flags. */
3488 section = obj_datasec (abfd);
3489 value -= bfd_get_section_vma (abfd, section);
3492 section = obj_bsssec (abfd);
3493 value -= bfd_get_section_vma (abfd, section);
3495 case N_INDR | N_EXT:
3496 /* An indirect symbol. The next symbol is the symbol
3497 which this one really is. */
3498 BFD_ASSERT (p + 1 < pend);
3500 string = strings + GET_WORD (abfd, p->e_strx);
3501 section = bfd_ind_section_ptr;
3502 flags |= BSF_INDIRECT;
3504 case N_COMM | N_EXT:
3505 section = bfd_com_section_ptr;
3507 case N_SETA: case N_SETA | N_EXT:
3508 section = bfd_abs_section_ptr;
3509 flags |= BSF_CONSTRUCTOR;
3511 case N_SETT: case N_SETT | N_EXT:
3512 section = obj_textsec (abfd);
3513 flags |= BSF_CONSTRUCTOR;
3514 value -= bfd_get_section_vma (abfd, section);
3516 case N_SETD: case N_SETD | N_EXT:
3517 section = obj_datasec (abfd);
3518 flags |= BSF_CONSTRUCTOR;
3519 value -= bfd_get_section_vma (abfd, section);
3521 case N_SETB: case N_SETB | N_EXT:
3522 section = obj_bsssec (abfd);
3523 flags |= BSF_CONSTRUCTOR;
3524 value -= bfd_get_section_vma (abfd, section);
3527 /* A warning symbol. The next symbol is the one to warn
3529 BFD_ASSERT (p + 1 < pend);
3532 name = strings + GET_WORD (abfd, p->e_strx);
3533 section = bfd_und_section_ptr;
3534 flags |= BSF_WARNING;
3537 section = bfd_und_section_ptr;
3541 section = bfd_abs_section_ptr;
3545 section = obj_textsec (abfd);
3546 value -= bfd_get_section_vma (abfd, section);
3550 section = obj_datasec (abfd);
3551 value -= bfd_get_section_vma (abfd, section);
3555 section = obj_bsssec (abfd);
3556 value -= bfd_get_section_vma (abfd, section);
3561 if (! ((*add_one_symbol)
3562 (info, abfd, name, flags, section, value, string, copy, FALSE,
3563 (struct bfd_link_hash_entry **) sym_hash)))
3566 /* Restrict the maximum alignment of a common symbol based on
3567 the architecture, since a.out has no way to represent
3568 alignment requirements of a section in a .o file. FIXME:
3569 This isn't quite right: it should use the architecture of the
3570 output file, not the input files. */
3571 if ((*sym_hash)->root.type == bfd_link_hash_common
3572 && ((*sym_hash)->root.u.c.p->alignment_power >
3573 bfd_get_arch_info (abfd)->section_align_power))
3574 (*sym_hash)->root.u.c.p->alignment_power =
3575 bfd_get_arch_info (abfd)->section_align_power;
3577 /* If this is a set symbol, and we are not building sets, then
3578 it is possible for the hash entry to not have been set. In
3579 such a case, treat the symbol as not globally defined. */
3580 if ((*sym_hash)->root.type == bfd_link_hash_new)
3582 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3586 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3593 /* A hash table used for header files with N_BINCL entries. */
3595 struct aout_link_includes_table
3597 struct bfd_hash_table root;
3600 /* A linked list of totals that we have found for a particular header
3603 struct aout_link_includes_totals
3605 struct aout_link_includes_totals *next;
3609 /* An entry in the header file hash table. */
3611 struct aout_link_includes_entry
3613 struct bfd_hash_entry root;
3614 /* List of totals we have found for this file. */
3615 struct aout_link_includes_totals *totals;
3618 /* Look up an entry in an the header file hash table. */
3620 #define aout_link_includes_lookup(table, string, create, copy) \
3621 ((struct aout_link_includes_entry *) \
3622 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3624 /* During the final link step we need to pass around a bunch of
3625 information, so we do it in an instance of this structure. */
3627 struct aout_final_link_info
3629 /* General link information. */
3630 struct bfd_link_info *info;
3633 /* Reloc file positions. */
3634 file_ptr treloff, dreloff;
3635 /* File position of symbols. */
3638 struct bfd_strtab_hash *strtab;
3639 /* Header file hash table. */
3640 struct aout_link_includes_table includes;
3641 /* A buffer large enough to hold the contents of any section. */
3643 /* A buffer large enough to hold the relocs of any section. */
3645 /* A buffer large enough to hold the symbol map of any input BFD. */
3647 /* A buffer large enough to hold output symbols of any input BFD. */
3648 struct external_nlist *output_syms;
3651 static struct bfd_hash_entry *aout_link_includes_newfunc
3652 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
3653 static bfd_boolean aout_link_input_bfd
3654 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3655 static bfd_boolean aout_link_write_symbols
3656 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3657 static bfd_boolean aout_link_write_other_symbol
3658 PARAMS ((struct aout_link_hash_entry *, PTR));
3659 static bfd_boolean aout_link_input_section
3660 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3661 asection *input_section, file_ptr *reloff_ptr,
3662 bfd_size_type rel_size));
3663 static bfd_boolean aout_link_input_section_std
3664 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3665 asection *input_section, struct reloc_std_external *,
3666 bfd_size_type rel_size, bfd_byte *contents));
3667 static bfd_boolean aout_link_input_section_ext
3668 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3669 asection *input_section, struct reloc_ext_external *,
3670 bfd_size_type rel_size, bfd_byte *contents));
3671 static INLINE asection *aout_reloc_index_to_section
3672 PARAMS ((bfd *, int));
3673 static bfd_boolean aout_link_reloc_link_order
3674 PARAMS ((struct aout_final_link_info *, asection *,
3675 struct bfd_link_order *));
3677 /* The function to create a new entry in the header file hash table. */
3679 static struct bfd_hash_entry *
3680 aout_link_includes_newfunc (entry, table, string)
3681 struct bfd_hash_entry *entry;
3682 struct bfd_hash_table *table;
3685 struct aout_link_includes_entry *ret =
3686 (struct aout_link_includes_entry *) entry;
3688 /* Allocate the structure if it has not already been allocated by a
3690 if (ret == (struct aout_link_includes_entry *) NULL)
3691 ret = ((struct aout_link_includes_entry *)
3692 bfd_hash_allocate (table,
3693 sizeof (struct aout_link_includes_entry)));
3694 if (ret == (struct aout_link_includes_entry *) NULL)
3695 return (struct bfd_hash_entry *) ret;
3697 /* Call the allocation method of the superclass. */
3698 ret = ((struct aout_link_includes_entry *)
3699 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3702 /* Set local fields. */
3706 return (struct bfd_hash_entry *) ret;
3709 /* Do the final link step. This is called on the output BFD. The
3710 INFO structure should point to a list of BFDs linked through the
3711 link_next field which can be used to find each BFD which takes part
3712 in the output. Also, each section in ABFD should point to a list
3713 of bfd_link_order structures which list all the input sections for
3714 the output section. */
3717 NAME(aout,final_link) (abfd, info, callback)
3719 struct bfd_link_info *info;
3720 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3722 struct aout_final_link_info aout_info;
3723 bfd_boolean includes_hash_initialized = FALSE;
3725 bfd_size_type trsize, drsize;
3726 bfd_size_type max_contents_size;
3727 bfd_size_type max_relocs_size;
3728 bfd_size_type max_sym_count;
3729 bfd_size_type text_size;
3731 register struct bfd_link_order *p;
3733 bfd_boolean have_link_order_relocs;
3736 abfd->flags |= DYNAMIC;
3738 aout_info.info = info;
3739 aout_info.output_bfd = abfd;
3740 aout_info.contents = NULL;
3741 aout_info.relocs = NULL;
3742 aout_info.symbol_map = NULL;
3743 aout_info.output_syms = NULL;
3745 if (! bfd_hash_table_init_n (&aout_info.includes.root,
3746 aout_link_includes_newfunc,
3749 includes_hash_initialized = TRUE;
3751 /* Figure out the largest section size. Also, if generating
3752 relocateable output, count the relocs. */
3755 max_contents_size = 0;
3756 max_relocs_size = 0;
3758 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
3762 if (info->relocateable)
3764 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3766 trsize += exec_hdr (sub)->a_trsize;
3767 drsize += exec_hdr (sub)->a_drsize;
3771 /* FIXME: We need to identify the .text and .data sections
3772 and call get_reloc_upper_bound and canonicalize_reloc to
3773 work out the number of relocs needed, and then multiply
3774 by the reloc size. */
3775 (*_bfd_error_handler)
3776 (_("%s: relocateable link from %s to %s not supported"),
3777 bfd_get_filename (abfd),
3778 sub->xvec->name, abfd->xvec->name);
3779 bfd_set_error (bfd_error_invalid_operation);
3784 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3786 sz = bfd_section_size (sub, obj_textsec (sub));
3787 if (sz > max_contents_size)
3788 max_contents_size = sz;
3789 sz = bfd_section_size (sub, obj_datasec (sub));
3790 if (sz > max_contents_size)
3791 max_contents_size = sz;
3793 sz = exec_hdr (sub)->a_trsize;
3794 if (sz > max_relocs_size)
3795 max_relocs_size = sz;
3796 sz = exec_hdr (sub)->a_drsize;
3797 if (sz > max_relocs_size)
3798 max_relocs_size = sz;
3800 sz = obj_aout_external_sym_count (sub);
3801 if (sz > max_sym_count)
3806 if (info->relocateable)
3808 if (obj_textsec (abfd) != (asection *) NULL)
3809 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3811 * obj_reloc_entry_size (abfd));
3812 if (obj_datasec (abfd) != (asection *) NULL)
3813 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3815 * obj_reloc_entry_size (abfd));
3818 exec_hdr (abfd)->a_trsize = trsize;
3819 exec_hdr (abfd)->a_drsize = drsize;
3821 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3823 /* Adjust the section sizes and vmas according to the magic number.
3824 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3825 filepos for each section. */
3826 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
3829 /* The relocation and symbol file positions differ among a.out
3830 targets. We are passed a callback routine from the backend
3831 specific code to handle this.
3832 FIXME: At this point we do not know how much space the symbol
3833 table will require. This will not work for any (nonstandard)
3834 a.out target that needs to know the symbol table size before it
3835 can compute the relocation file positions. This may or may not
3836 be the case for the hp300hpux target, for example. */
3837 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3839 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3840 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3841 obj_sym_filepos (abfd) = aout_info.symoff;
3843 /* We keep a count of the symbols as we output them. */
3844 obj_aout_external_sym_count (abfd) = 0;
3846 /* We accumulate the string table as we write out the symbols. */
3847 aout_info.strtab = _bfd_stringtab_init ();
3848 if (aout_info.strtab == NULL)
3851 /* Allocate buffers to hold section contents and relocs. */
3852 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
3853 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size);
3854 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *));
3855 aout_info.output_syms = ((struct external_nlist *)
3856 bfd_malloc ((max_sym_count + 1)
3857 * sizeof (struct external_nlist)));
3858 if ((aout_info.contents == NULL && max_contents_size != 0)
3859 || (aout_info.relocs == NULL && max_relocs_size != 0)
3860 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3861 || aout_info.output_syms == NULL)
3864 /* If we have a symbol named __DYNAMIC, force it out now. This is
3865 required by SunOS. Doing this here rather than in sunos.c is a
3866 hack, but it's easier than exporting everything which would be
3869 struct aout_link_hash_entry *h;
3871 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3872 FALSE, FALSE, FALSE);
3874 aout_link_write_other_symbol (h, &aout_info);
3877 /* The most time efficient way to do the link would be to read all
3878 the input object files into memory and then sort out the
3879 information into the output file. Unfortunately, that will
3880 probably use too much memory. Another method would be to step
3881 through everything that composes the text section and write it
3882 out, and then everything that composes the data section and write
3883 it out, and then write out the relocs, and then write out the
3884 symbols. Unfortunately, that requires reading stuff from each
3885 input file several times, and we will not be able to keep all the
3886 input files open simultaneously, and reopening them will be slow.
3888 What we do is basically process one input file at a time. We do
3889 everything we need to do with an input file once--copy over the
3890 section contents, handle the relocation information, and write
3891 out the symbols--and then we throw away the information we read
3892 from it. This approach requires a lot of lseeks of the output
3893 file, which is unfortunate but still faster than reopening a lot
3896 We use the output_has_begun field of the input BFDs to see
3897 whether we have already handled it. */
3898 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3899 sub->output_has_begun = FALSE;
3901 /* Mark all sections which are to be included in the link. This
3902 will normally be every section. We need to do this so that we
3903 can identify any sections which the linker has decided to not
3905 for (o = abfd->sections; o != NULL; o = o->next)
3907 for (p = o->link_order_head; p != NULL; p = p->next)
3909 if (p->type == bfd_indirect_link_order)
3910 p->u.indirect.section->linker_mark = TRUE;
3914 have_link_order_relocs = FALSE;
3915 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3917 for (p = o->link_order_head;
3918 p != (struct bfd_link_order *) NULL;
3921 if (p->type == bfd_indirect_link_order
3922 && (bfd_get_flavour (p->u.indirect.section->owner)
3923 == bfd_target_aout_flavour))
3927 input_bfd = p->u.indirect.section->owner;
3928 if (! input_bfd->output_has_begun)
3930 if (! aout_link_input_bfd (&aout_info, input_bfd))
3932 input_bfd->output_has_begun = TRUE;
3935 else if (p->type == bfd_section_reloc_link_order
3936 || p->type == bfd_symbol_reloc_link_order)
3938 /* These are handled below. */
3939 have_link_order_relocs = TRUE;
3943 if (! _bfd_default_link_order (abfd, info, o, p))
3949 /* Write out any symbols that we have not already written out. */
3950 aout_link_hash_traverse (aout_hash_table (info),
3951 aout_link_write_other_symbol,
3954 /* Now handle any relocs we were asked to create by the linker.
3955 These did not come from any input file. We must do these after
3956 we have written out all the symbols, so that we know the symbol
3958 if (have_link_order_relocs)
3960 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3962 for (p = o->link_order_head;
3963 p != (struct bfd_link_order *) NULL;
3966 if (p->type == bfd_section_reloc_link_order
3967 || p->type == bfd_symbol_reloc_link_order)
3969 if (! aout_link_reloc_link_order (&aout_info, o, p))
3976 if (aout_info.contents != NULL)
3978 free (aout_info.contents);
3979 aout_info.contents = NULL;
3981 if (aout_info.relocs != NULL)
3983 free (aout_info.relocs);
3984 aout_info.relocs = NULL;
3986 if (aout_info.symbol_map != NULL)
3988 free (aout_info.symbol_map);
3989 aout_info.symbol_map = NULL;
3991 if (aout_info.output_syms != NULL)
3993 free (aout_info.output_syms);
3994 aout_info.output_syms = NULL;
3996 if (includes_hash_initialized)
3998 bfd_hash_table_free (&aout_info.includes.root);
3999 includes_hash_initialized = FALSE;
4002 /* Finish up any dynamic linking we may be doing. */
4003 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
4005 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
4009 /* Update the header information. */
4010 abfd->symcount = obj_aout_external_sym_count (abfd);
4011 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
4012 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
4013 obj_textsec (abfd)->reloc_count =
4014 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
4015 obj_datasec (abfd)->reloc_count =
4016 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
4018 /* Write out the string table, unless there are no symbols. */
4019 if (abfd->symcount > 0)
4021 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
4022 || ! emit_stringtab (abfd, aout_info.strtab))
4025 else if (obj_textsec (abfd)->reloc_count == 0
4026 && obj_datasec (abfd)->reloc_count == 0)
4032 pos = obj_datasec (abfd)->filepos + exec_hdr (abfd)->a_data - 1;
4033 if (bfd_seek (abfd, pos, SEEK_SET) != 0
4034 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4041 if (aout_info.contents != NULL)
4042 free (aout_info.contents);
4043 if (aout_info.relocs != NULL)
4044 free (aout_info.relocs);
4045 if (aout_info.symbol_map != NULL)
4046 free (aout_info.symbol_map);
4047 if (aout_info.output_syms != NULL)
4048 free (aout_info.output_syms);
4049 if (includes_hash_initialized)
4050 bfd_hash_table_free (&aout_info.includes.root);
4054 /* Link an a.out input BFD into the output file. */
4057 aout_link_input_bfd (finfo, input_bfd)
4058 struct aout_final_link_info *finfo;
4061 bfd_size_type sym_count;
4063 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
4065 /* If this is a dynamic object, it may need special handling. */
4066 if ((input_bfd->flags & DYNAMIC) != 0
4067 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
4069 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
4070 (finfo->info, input_bfd));
4073 /* Get the symbols. We probably have them already, unless
4074 finfo->info->keep_memory is FALSE. */
4075 if (! aout_get_external_symbols (input_bfd))
4078 sym_count = obj_aout_external_sym_count (input_bfd);
4080 /* Write out the symbols and get a map of the new indices. The map
4081 is placed into finfo->symbol_map. */
4082 if (! aout_link_write_symbols (finfo, input_bfd))
4085 /* Relocate and write out the sections. These functions use the
4086 symbol map created by aout_link_write_symbols. The linker_mark
4087 field will be set if these sections are to be included in the
4088 link, which will normally be the case. */
4089 if (obj_textsec (input_bfd)->linker_mark)
4091 if (! aout_link_input_section (finfo, input_bfd,
4092 obj_textsec (input_bfd),
4094 exec_hdr (input_bfd)->a_trsize))
4097 if (obj_datasec (input_bfd)->linker_mark)
4099 if (! aout_link_input_section (finfo, input_bfd,
4100 obj_datasec (input_bfd),
4102 exec_hdr (input_bfd)->a_drsize))
4106 /* If we are not keeping memory, we don't need the symbols any
4107 longer. We still need them if we are keeping memory, because the
4108 strings in the hash table point into them. */
4109 if (! finfo->info->keep_memory)
4111 if (! aout_link_free_symbols (input_bfd))
4118 /* Adjust and write out the symbols for an a.out file. Set the new
4119 symbol indices into a symbol_map. */
4122 aout_link_write_symbols (finfo, input_bfd)
4123 struct aout_final_link_info *finfo;
4127 bfd_size_type sym_count;
4129 enum bfd_link_strip strip;
4130 enum bfd_link_discard discard;
4131 struct external_nlist *outsym;
4132 bfd_size_type strtab_index;
4133 register struct external_nlist *sym;
4134 struct external_nlist *sym_end;
4135 struct aout_link_hash_entry **sym_hash;
4138 bfd_boolean skip_next;
4140 output_bfd = finfo->output_bfd;
4141 sym_count = obj_aout_external_sym_count (input_bfd);
4142 strings = obj_aout_external_strings (input_bfd);
4143 strip = finfo->info->strip;
4144 discard = finfo->info->discard;
4145 outsym = finfo->output_syms;
4147 /* First write out a symbol for this object file, unless we are
4148 discarding such symbols. */
4149 if (strip != strip_all
4150 && (strip != strip_some
4151 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
4152 FALSE, FALSE) != NULL)
4153 && discard != discard_all)
4155 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4156 H_PUT_8 (output_bfd, 0, outsym->e_other);
4157 H_PUT_16 (output_bfd, 0, outsym->e_desc);
4158 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4159 input_bfd->filename, FALSE);
4160 if (strtab_index == (bfd_size_type) -1)
4162 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4163 PUT_WORD (output_bfd,
4164 (bfd_get_section_vma (output_bfd,
4165 obj_textsec (input_bfd)->output_section)
4166 + obj_textsec (input_bfd)->output_offset),
4168 ++obj_aout_external_sym_count (output_bfd);
4174 sym = obj_aout_external_syms (input_bfd);
4175 sym_end = sym + sym_count;
4176 sym_hash = obj_aout_sym_hashes (input_bfd);
4177 symbol_map = finfo->symbol_map;
4178 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4179 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
4183 struct aout_link_hash_entry *h;
4189 /* We set *symbol_map to 0 above for all symbols. If it has
4190 already been set to -1 for this symbol, it means that we are
4191 discarding it because it appears in a duplicate header file.
4192 See the N_BINCL code below. */
4193 if (*symbol_map == -1)
4196 /* Initialize *symbol_map to -1, which means that the symbol was
4197 not copied into the output file. We will change it later if
4198 we do copy the symbol over. */
4201 type = H_GET_8 (input_bfd, sym->e_type);
4202 name = strings + GET_WORD (input_bfd, sym->e_strx);
4208 /* Pass this symbol through. It is the target of an
4209 indirect or warning symbol. */
4210 val = GET_WORD (input_bfd, sym->e_value);
4215 /* Skip this symbol, which is the target of an indirect
4216 symbol that we have changed to no longer be an indirect
4223 struct aout_link_hash_entry *hresolve;
4225 /* We have saved the hash table entry for this symbol, if
4226 there is one. Note that we could just look it up again
4227 in the hash table, provided we first check that it is an
4231 /* Use the name from the hash table, in case the symbol was
4234 && h->root.type != bfd_link_hash_warning)
4235 name = h->root.root.string;
4237 /* If this is an indirect or warning symbol, then change
4238 hresolve to the base symbol. We also change *sym_hash so
4239 that the relocation routines relocate against the real
4242 if (h != (struct aout_link_hash_entry *) NULL
4243 && (h->root.type == bfd_link_hash_indirect
4244 || h->root.type == bfd_link_hash_warning))
4246 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4247 while (hresolve->root.type == bfd_link_hash_indirect
4248 || hresolve->root.type == bfd_link_hash_warning)
4249 hresolve = ((struct aout_link_hash_entry *)
4250 hresolve->root.u.i.link);
4251 *sym_hash = hresolve;
4254 /* If the symbol has already been written out, skip it. */
4255 if (h != (struct aout_link_hash_entry *) NULL
4258 if ((type & N_TYPE) == N_INDR
4259 || type == N_WARNING)
4261 *symbol_map = h->indx;
4265 /* See if we are stripping this symbol. */
4271 case strip_debugger:
4272 if ((type & N_STAB) != 0)
4276 if (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE)
4286 if (h != (struct aout_link_hash_entry *) NULL)
4291 /* Get the value of the symbol. */
4292 if ((type & N_TYPE) == N_TEXT
4294 symsec = obj_textsec (input_bfd);
4295 else if ((type & N_TYPE) == N_DATA
4297 symsec = obj_datasec (input_bfd);
4298 else if ((type & N_TYPE) == N_BSS
4300 symsec = obj_bsssec (input_bfd);
4301 else if ((type & N_TYPE) == N_ABS
4303 symsec = bfd_abs_section_ptr;
4304 else if (((type & N_TYPE) == N_INDR
4305 && (hresolve == (struct aout_link_hash_entry *) NULL
4306 || (hresolve->root.type != bfd_link_hash_defined
4307 && hresolve->root.type != bfd_link_hash_defweak
4308 && hresolve->root.type != bfd_link_hash_common)))
4309 || type == N_WARNING)
4311 /* Pass the next symbol through unchanged. The
4312 condition above for indirect symbols is so that if
4313 the indirect symbol was defined, we output it with
4314 the correct definition so the debugger will
4317 val = GET_WORD (input_bfd, sym->e_value);
4320 else if ((type & N_STAB) != 0)
4322 val = GET_WORD (input_bfd, sym->e_value);
4327 /* If we get here with an indirect symbol, it means that
4328 we are outputting it with a real definition. In such
4329 a case we do not want to output the next symbol,
4330 which is the target of the indirection. */
4331 if ((type & N_TYPE) == N_INDR)
4336 /* We need to get the value from the hash table. We use
4337 hresolve so that if we have defined an indirect
4338 symbol we output the final definition. */
4339 if (h == (struct aout_link_hash_entry *) NULL)
4341 switch (type & N_TYPE)
4344 symsec = obj_textsec (input_bfd);
4347 symsec = obj_datasec (input_bfd);
4350 symsec = obj_bsssec (input_bfd);
4353 symsec = bfd_abs_section_ptr;
4360 else if (hresolve->root.type == bfd_link_hash_defined
4361 || hresolve->root.type == bfd_link_hash_defweak)
4363 asection *input_section;
4364 asection *output_section;
4366 /* This case usually means a common symbol which was
4367 turned into a defined symbol. */
4368 input_section = hresolve->root.u.def.section;
4369 output_section = input_section->output_section;
4370 BFD_ASSERT (bfd_is_abs_section (output_section)
4371 || output_section->owner == output_bfd);
4372 val = (hresolve->root.u.def.value
4373 + bfd_get_section_vma (output_bfd, output_section)
4374 + input_section->output_offset);
4376 /* Get the correct type based on the section. If
4377 this is a constructed set, force it to be
4378 globally visible. */
4387 if (output_section == obj_textsec (output_bfd))
4388 type |= (hresolve->root.type == bfd_link_hash_defined
4391 else if (output_section == obj_datasec (output_bfd))
4392 type |= (hresolve->root.type == bfd_link_hash_defined
4395 else if (output_section == obj_bsssec (output_bfd))
4396 type |= (hresolve->root.type == bfd_link_hash_defined
4400 type |= (hresolve->root.type == bfd_link_hash_defined
4404 else if (hresolve->root.type == bfd_link_hash_common)
4405 val = hresolve->root.u.c.size;
4406 else if (hresolve->root.type == bfd_link_hash_undefweak)
4414 if (symsec != (asection *) NULL)
4415 val = (symsec->output_section->vma
4416 + symsec->output_offset
4417 + (GET_WORD (input_bfd, sym->e_value)
4420 /* If this is a global symbol set the written flag, and if
4421 it is a local symbol see if we should discard it. */
4422 if (h != (struct aout_link_hash_entry *) NULL)
4425 h->indx = obj_aout_external_sym_count (output_bfd);
4427 else if ((type & N_TYPE) != N_SETT
4428 && (type & N_TYPE) != N_SETD
4429 && (type & N_TYPE) != N_SETB
4430 && (type & N_TYPE) != N_SETA)
4435 case discard_sec_merge:
4438 if ((type & N_STAB) == 0
4439 && bfd_is_local_label_name (input_bfd, name))
4453 /* An N_BINCL symbol indicates the start of the stabs
4454 entries for a header file. We need to scan ahead to the
4455 next N_EINCL symbol, ignoring nesting, adding up all the
4456 characters in the symbol names, not including the file
4457 numbers in types (the first number after an open
4459 if (type == (int) N_BINCL)
4461 struct external_nlist *incl_sym;
4463 struct aout_link_includes_entry *incl_entry;
4464 struct aout_link_includes_totals *t;
4468 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
4472 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
4473 if (incl_type == (int) N_EINCL)
4479 else if (incl_type == (int) N_BINCL)
4485 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
4486 for (; *s != '\0'; s++)
4491 /* Skip the file number. */
4493 while (ISDIGIT (*s))
4501 /* If we have already included a header file with the
4502 same value, then replace this one with an N_EXCL
4504 copy = (bfd_boolean) (! finfo->info->keep_memory);
4505 incl_entry = aout_link_includes_lookup (&finfo->includes,
4507 if (incl_entry == NULL)
4509 for (t = incl_entry->totals; t != NULL; t = t->next)
4510 if (t->total == val)
4514 /* This is the first time we have seen this header
4515 file with this set of stabs strings. */
4516 t = ((struct aout_link_includes_totals *)
4517 bfd_hash_allocate (&finfo->includes.root,
4522 t->next = incl_entry->totals;
4523 incl_entry->totals = t;
4529 /* This is a duplicate header file. We must change
4530 it to be an N_EXCL entry, and mark all the
4531 included symbols to prevent outputting them. */
4532 type = (int) N_EXCL;
4535 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
4537 incl_sym++, incl_map++)
4541 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
4542 if (incl_type == (int) N_EINCL)
4551 else if (incl_type == (int) N_BINCL)
4560 /* Copy this symbol into the list of symbols we are going to
4562 H_PUT_8 (output_bfd, type, outsym->e_type);
4563 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
4564 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
4566 if (! finfo->info->keep_memory)
4568 /* name points into a string table which we are going to
4569 free. If there is a hash table entry, use that string.
4570 Otherwise, copy name into memory. */
4571 if (h != (struct aout_link_hash_entry *) NULL)
4572 name = h->root.root.string;
4576 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4578 if (strtab_index == (bfd_size_type) -1)
4580 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4581 PUT_WORD (output_bfd, val, outsym->e_value);
4582 *symbol_map = obj_aout_external_sym_count (output_bfd);
4583 ++obj_aout_external_sym_count (output_bfd);
4587 /* Write out the output symbols we have just constructed. */
4588 if (outsym > finfo->output_syms)
4590 bfd_size_type outsym_size;
4592 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
4594 outsym_size = outsym - finfo->output_syms;
4595 outsym_size *= EXTERNAL_NLIST_SIZE;
4596 if (bfd_bwrite ((PTR) finfo->output_syms, outsym_size, output_bfd)
4599 finfo->symoff += outsym_size;
4605 /* Write out a symbol that was not associated with an a.out input
4609 aout_link_write_other_symbol (h, data)
4610 struct aout_link_hash_entry *h;
4613 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4617 struct external_nlist outsym;
4621 if (h->root.type == bfd_link_hash_warning)
4623 h = (struct aout_link_hash_entry *) h->root.u.i.link;
4624 if (h->root.type == bfd_link_hash_new)
4628 output_bfd = finfo->output_bfd;
4630 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4632 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4633 (output_bfd, finfo->info, h)))
4635 /* FIXME: No way to handle errors. */
4645 /* An indx of -2 means the symbol must be written. */
4647 && (finfo->info->strip == strip_all
4648 || (finfo->info->strip == strip_some
4649 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4650 FALSE, FALSE) == NULL)))
4653 switch (h->root.type)
4656 case bfd_link_hash_warning:
4658 /* Avoid variable not initialized warnings. */
4660 case bfd_link_hash_new:
4661 /* This can happen for set symbols when sets are not being
4664 case bfd_link_hash_undefined:
4665 type = N_UNDF | N_EXT;
4668 case bfd_link_hash_defined:
4669 case bfd_link_hash_defweak:
4673 sec = h->root.u.def.section->output_section;
4674 BFD_ASSERT (bfd_is_abs_section (sec)
4675 || sec->owner == output_bfd);
4676 if (sec == obj_textsec (output_bfd))
4677 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4678 else if (sec == obj_datasec (output_bfd))
4679 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4680 else if (sec == obj_bsssec (output_bfd))
4681 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4683 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4685 val = (h->root.u.def.value
4687 + h->root.u.def.section->output_offset);
4690 case bfd_link_hash_common:
4691 type = N_UNDF | N_EXT;
4692 val = h->root.u.c.size;
4694 case bfd_link_hash_undefweak:
4697 case bfd_link_hash_indirect:
4698 /* We ignore these symbols, since the indirected symbol is
4699 already in the hash table. */
4703 H_PUT_8 (output_bfd, type, outsym.e_type);
4704 H_PUT_8 (output_bfd, 0, outsym.e_other);
4705 H_PUT_16 (output_bfd, 0, outsym.e_desc);
4706 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
4708 if (indx == - (bfd_size_type) 1)
4710 /* FIXME: No way to handle errors. */
4713 PUT_WORD (output_bfd, indx, outsym.e_strx);
4714 PUT_WORD (output_bfd, val, outsym.e_value);
4716 amt = EXTERNAL_NLIST_SIZE;
4717 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4718 || bfd_bwrite ((PTR) &outsym, amt, output_bfd) != amt)
4720 /* FIXME: No way to handle errors. */
4724 finfo->symoff += EXTERNAL_NLIST_SIZE;
4725 h->indx = obj_aout_external_sym_count (output_bfd);
4726 ++obj_aout_external_sym_count (output_bfd);
4731 /* Link an a.out section into the output file. */
4734 aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
4736 struct aout_final_link_info *finfo;
4738 asection *input_section;
4739 file_ptr *reloff_ptr;
4740 bfd_size_type rel_size;
4742 bfd_size_type input_size;
4745 /* Get the section contents. */
4746 input_size = bfd_section_size (input_bfd, input_section);
4747 if (! bfd_get_section_contents (input_bfd, input_section,
4748 (PTR) finfo->contents,
4749 (file_ptr) 0, input_size))
4752 /* Read in the relocs if we haven't already done it. */
4753 if (aout_section_data (input_section) != NULL
4754 && aout_section_data (input_section)->relocs != NULL)
4755 relocs = aout_section_data (input_section)->relocs;
4758 relocs = finfo->relocs;
4761 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4762 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4767 /* Relocate the section contents. */
4768 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4770 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4771 (struct reloc_std_external *) relocs,
4772 rel_size, finfo->contents))
4777 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4778 (struct reloc_ext_external *) relocs,
4779 rel_size, finfo->contents))
4783 /* Write out the section contents. */
4784 if (! bfd_set_section_contents (finfo->output_bfd,
4785 input_section->output_section,
4786 (PTR) finfo->contents,
4787 (file_ptr) input_section->output_offset,
4791 /* If we are producing relocateable output, the relocs were
4792 modified, and we now write them out. */
4793 if (finfo->info->relocateable && rel_size > 0)
4795 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
4797 if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size)
4799 *reloff_ptr += rel_size;
4801 /* Assert that the relocs have not run into the symbols, and
4802 that if these are the text relocs they have not run into the
4804 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4805 && (reloff_ptr != &finfo->treloff
4807 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4813 /* Get the section corresponding to a reloc index. */
4815 static INLINE asection *
4816 aout_reloc_index_to_section (abfd, indx)
4820 switch (indx & N_TYPE)
4823 return obj_textsec (abfd);
4825 return obj_datasec (abfd);
4827 return obj_bsssec (abfd);
4830 return bfd_abs_section_ptr;
4838 /* Relocate an a.out section using standard a.out relocs. */
4841 aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
4843 struct aout_final_link_info *finfo;
4845 asection *input_section;
4846 struct reloc_std_external *relocs;
4847 bfd_size_type rel_size;
4850 bfd_boolean (*check_dynamic_reloc)
4851 PARAMS ((struct bfd_link_info *, bfd *, asection *,
4852 struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *,
4855 bfd_boolean relocateable;
4856 struct external_nlist *syms;
4858 struct aout_link_hash_entry **sym_hashes;
4860 bfd_size_type reloc_count;
4861 register struct reloc_std_external *rel;
4862 struct reloc_std_external *rel_end;
4864 output_bfd = finfo->output_bfd;
4865 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4867 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4868 BFD_ASSERT (input_bfd->xvec->header_byteorder
4869 == output_bfd->xvec->header_byteorder);
4871 relocateable = finfo->info->relocateable;
4872 syms = obj_aout_external_syms (input_bfd);
4873 strings = obj_aout_external_strings (input_bfd);
4874 sym_hashes = obj_aout_sym_hashes (input_bfd);
4875 symbol_map = finfo->symbol_map;
4877 reloc_count = rel_size / RELOC_STD_SIZE;
4879 rel_end = rel + reloc_count;
4880 for (; rel < rel_end; rel++)
4887 reloc_howto_type *howto;
4888 struct aout_link_hash_entry *h = NULL;
4890 bfd_reloc_status_type r;
4892 r_addr = GET_SWORD (input_bfd, rel->r_address);
4894 #ifdef MY_reloc_howto
4895 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
4901 unsigned int howto_idx;
4903 if (bfd_header_big_endian (input_bfd))
4905 r_index = (((unsigned int) rel->r_index[0] << 16)
4906 | ((unsigned int) rel->r_index[1] << 8)
4908 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4909 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4910 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4911 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4912 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4913 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4914 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4918 r_index = (((unsigned int) rel->r_index[2] << 16)
4919 | ((unsigned int) rel->r_index[1] << 8)
4921 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4922 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4923 r_baserel = (0 != (rel->r_type[0]
4924 & RELOC_STD_BITS_BASEREL_LITTLE));
4925 r_jmptable= (0 != (rel->r_type[0]
4926 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4927 r_relative= (0 != (rel->r_type[0]
4928 & RELOC_STD_BITS_RELATIVE_LITTLE));
4929 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4930 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4933 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4934 + 16 * r_jmptable + 32 * r_relative);
4935 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4936 howto = howto_table_std + howto_idx;
4942 /* We are generating a relocateable output file, and must
4943 modify the reloc accordingly. */
4946 /* If we know the symbol this relocation is against,
4947 convert it into a relocation against a section. This
4948 is what the native linker does. */
4949 h = sym_hashes[r_index];
4950 if (h != (struct aout_link_hash_entry *) NULL
4951 && (h->root.type == bfd_link_hash_defined
4952 || h->root.type == bfd_link_hash_defweak))
4954 asection *output_section;
4956 /* Change the r_extern value. */
4957 if (bfd_header_big_endian (output_bfd))
4958 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4960 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4962 /* Compute a new r_index. */
4963 output_section = h->root.u.def.section->output_section;
4964 if (output_section == obj_textsec (output_bfd))
4966 else if (output_section == obj_datasec (output_bfd))
4968 else if (output_section == obj_bsssec (output_bfd))
4973 /* Add the symbol value and the section VMA to the
4974 addend stored in the contents. */
4975 relocation = (h->root.u.def.value
4976 + output_section->vma
4977 + h->root.u.def.section->output_offset);
4981 /* We must change r_index according to the symbol
4983 r_index = symbol_map[r_index];
4989 /* We decided to strip this symbol, but it
4990 turns out that we can't. Note that we
4991 lose the other and desc information here.
4992 I don't think that will ever matter for a
4998 if (! aout_link_write_other_symbol (h,
5008 name = strings + GET_WORD (input_bfd,
5009 syms[r_index].e_strx);
5010 if (! ((*finfo->info->callbacks->unattached_reloc)
5011 (finfo->info, name, input_bfd, input_section,
5021 /* Write out the new r_index value. */
5022 if (bfd_header_big_endian (output_bfd))
5024 rel->r_index[0] = r_index >> 16;
5025 rel->r_index[1] = r_index >> 8;
5026 rel->r_index[2] = r_index;
5030 rel->r_index[2] = r_index >> 16;
5031 rel->r_index[1] = r_index >> 8;
5032 rel->r_index[0] = r_index;
5039 /* This is a relocation against a section. We must
5040 adjust by the amount that the section moved. */
5041 section = aout_reloc_index_to_section (input_bfd, r_index);
5042 relocation = (section->output_section->vma
5043 + section->output_offset
5047 /* Change the address of the relocation. */
5048 PUT_WORD (output_bfd,
5049 r_addr + input_section->output_offset,
5052 /* Adjust a PC relative relocation by removing the reference
5053 to the original address in the section and including the
5054 reference to the new address. */
5056 relocation -= (input_section->output_section->vma
5057 + input_section->output_offset
5058 - input_section->vma);
5060 #ifdef MY_relocatable_reloc
5061 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
5064 if (relocation == 0)
5067 r = MY_relocate_contents (howto,
5068 input_bfd, relocation,
5075 /* We are generating an executable, and must do a full
5081 h = sym_hashes[r_index];
5083 if (h != (struct aout_link_hash_entry *) NULL
5084 && (h->root.type == bfd_link_hash_defined
5085 || h->root.type == bfd_link_hash_defweak))
5087 relocation = (h->root.u.def.value
5088 + h->root.u.def.section->output_section->vma
5089 + h->root.u.def.section->output_offset);
5091 else if (h != (struct aout_link_hash_entry *) NULL
5092 && h->root.type == bfd_link_hash_undefweak)
5104 section = aout_reloc_index_to_section (input_bfd, r_index);
5105 relocation = (section->output_section->vma
5106 + section->output_offset
5109 relocation += input_section->vma;
5112 if (check_dynamic_reloc != NULL)
5116 if (! ((*check_dynamic_reloc)
5117 (finfo->info, input_bfd, input_section, h,
5118 (PTR) rel, contents, &skip, &relocation)))
5124 /* Now warn if a global symbol is undefined. We could not
5125 do this earlier, because check_dynamic_reloc might want
5126 to skip this reloc. */
5127 if (hundef && ! finfo->info->shared && ! r_baserel)
5132 name = h->root.root.string;
5134 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5135 if (! ((*finfo->info->callbacks->undefined_symbol)
5136 (finfo->info, name, input_bfd, input_section,
5141 r = MY_final_link_relocate (howto,
5142 input_bfd, input_section,
5143 contents, r_addr, relocation,
5147 if (r != bfd_reloc_ok)
5152 case bfd_reloc_outofrange:
5154 case bfd_reloc_overflow:
5159 name = h->root.root.string;
5161 name = strings + GET_WORD (input_bfd,
5162 syms[r_index].e_strx);
5167 s = aout_reloc_index_to_section (input_bfd, r_index);
5168 name = bfd_section_name (input_bfd, s);
5170 if (! ((*finfo->info->callbacks->reloc_overflow)
5171 (finfo->info, name, howto->name,
5172 (bfd_vma) 0, input_bfd, input_section, r_addr)))
5183 /* Relocate an a.out section using extended a.out relocs. */
5186 aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
5188 struct aout_final_link_info *finfo;
5190 asection *input_section;
5191 struct reloc_ext_external *relocs;
5192 bfd_size_type rel_size;
5195 bfd_boolean (*check_dynamic_reloc)
5196 PARAMS ((struct bfd_link_info *, bfd *, asection *,
5197 struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *,
5200 bfd_boolean relocateable;
5201 struct external_nlist *syms;
5203 struct aout_link_hash_entry **sym_hashes;
5205 bfd_size_type reloc_count;
5206 register struct reloc_ext_external *rel;
5207 struct reloc_ext_external *rel_end;
5209 output_bfd = finfo->output_bfd;
5210 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
5212 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
5213 BFD_ASSERT (input_bfd->xvec->header_byteorder
5214 == output_bfd->xvec->header_byteorder);
5216 relocateable = finfo->info->relocateable;
5217 syms = obj_aout_external_syms (input_bfd);
5218 strings = obj_aout_external_strings (input_bfd);
5219 sym_hashes = obj_aout_sym_hashes (input_bfd);
5220 symbol_map = finfo->symbol_map;
5222 reloc_count = rel_size / RELOC_EXT_SIZE;
5224 rel_end = rel + reloc_count;
5225 for (; rel < rel_end; rel++)
5230 unsigned int r_type;
5232 struct aout_link_hash_entry *h = NULL;
5233 asection *r_section = NULL;
5236 r_addr = GET_SWORD (input_bfd, rel->r_address);
5238 if (bfd_header_big_endian (input_bfd))
5240 r_index = (((unsigned int) rel->r_index[0] << 16)
5241 | ((unsigned int) rel->r_index[1] << 8)
5243 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
5244 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
5245 >> RELOC_EXT_BITS_TYPE_SH_BIG);
5249 r_index = (((unsigned int) rel->r_index[2] << 16)
5250 | ((unsigned int) rel->r_index[1] << 8)
5252 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
5253 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
5254 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
5257 r_addend = GET_SWORD (input_bfd, rel->r_addend);
5259 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
5263 /* We are generating a relocateable output file, and must
5264 modify the reloc accordingly. */
5266 || r_type == (unsigned int) RELOC_BASE10
5267 || r_type == (unsigned int) RELOC_BASE13
5268 || r_type == (unsigned int) RELOC_BASE22)
5270 /* If we know the symbol this relocation is against,
5271 convert it into a relocation against a section. This
5272 is what the native linker does. */
5273 if (r_type == (unsigned int) RELOC_BASE10
5274 || r_type == (unsigned int) RELOC_BASE13
5275 || r_type == (unsigned int) RELOC_BASE22)
5278 h = sym_hashes[r_index];
5279 if (h != (struct aout_link_hash_entry *) NULL
5280 && (h->root.type == bfd_link_hash_defined
5281 || h->root.type == bfd_link_hash_defweak))
5283 asection *output_section;
5285 /* Change the r_extern value. */
5286 if (bfd_header_big_endian (output_bfd))
5287 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
5289 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
5291 /* Compute a new r_index. */
5292 output_section = h->root.u.def.section->output_section;
5293 if (output_section == obj_textsec (output_bfd))
5295 else if (output_section == obj_datasec (output_bfd))
5297 else if (output_section == obj_bsssec (output_bfd))
5302 /* Add the symbol value and the section VMA to the
5304 relocation = (h->root.u.def.value
5305 + output_section->vma
5306 + h->root.u.def.section->output_offset);
5308 /* Now RELOCATION is the VMA of the final
5309 destination. If this is a PC relative reloc,
5310 then ADDEND is the negative of the source VMA.
5311 We want to set ADDEND to the difference between
5312 the destination VMA and the source VMA, which
5313 means we must adjust RELOCATION by the change in
5314 the source VMA. This is done below. */
5318 /* We must change r_index according to the symbol
5320 r_index = symbol_map[r_index];
5326 /* We decided to strip this symbol, but it
5327 turns out that we can't. Note that we
5328 lose the other and desc information here.
5329 I don't think that will ever matter for a
5335 if (! aout_link_write_other_symbol (h,
5345 name = strings + GET_WORD (input_bfd,
5346 syms[r_index].e_strx);
5347 if (! ((*finfo->info->callbacks->unattached_reloc)
5348 (finfo->info, name, input_bfd, input_section,
5357 /* If this is a PC relative reloc, then the addend
5358 is the negative of the source VMA. We must
5359 adjust it by the change in the source VMA. This
5363 /* Write out the new r_index value. */
5364 if (bfd_header_big_endian (output_bfd))
5366 rel->r_index[0] = r_index >> 16;
5367 rel->r_index[1] = r_index >> 8;
5368 rel->r_index[2] = r_index;
5372 rel->r_index[2] = r_index >> 16;
5373 rel->r_index[1] = r_index >> 8;
5374 rel->r_index[0] = r_index;
5379 /* This is a relocation against a section. We must
5380 adjust by the amount that the section moved. */
5381 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5382 relocation = (r_section->output_section->vma
5383 + r_section->output_offset
5386 /* If this is a PC relative reloc, then the addend is
5387 the difference in VMA between the destination and the
5388 source. We have just adjusted for the change in VMA
5389 of the destination, so we must also adjust by the
5390 change in VMA of the source. This is done below. */
5393 /* As described above, we must always adjust a PC relative
5394 reloc by the change in VMA of the source. However, if
5395 pcrel_offset is set, then the addend does not include the
5396 location within the section, in which case we don't need
5397 to adjust anything. */
5398 if (howto_table_ext[r_type].pc_relative
5399 && ! howto_table_ext[r_type].pcrel_offset)
5400 relocation -= (input_section->output_section->vma
5401 + input_section->output_offset
5402 - input_section->vma);
5404 /* Change the addend if necessary. */
5405 if (relocation != 0)
5406 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
5408 /* Change the address of the relocation. */
5409 PUT_WORD (output_bfd,
5410 r_addr + input_section->output_offset,
5416 bfd_reloc_status_type r;
5418 /* We are generating an executable, and must do a full
5424 h = sym_hashes[r_index];
5426 if (h != (struct aout_link_hash_entry *) NULL
5427 && (h->root.type == bfd_link_hash_defined
5428 || h->root.type == bfd_link_hash_defweak))
5430 relocation = (h->root.u.def.value
5431 + h->root.u.def.section->output_section->vma
5432 + h->root.u.def.section->output_offset);
5434 else if (h != (struct aout_link_hash_entry *) NULL
5435 && h->root.type == bfd_link_hash_undefweak)
5443 else if (r_type == (unsigned int) RELOC_BASE10
5444 || r_type == (unsigned int) RELOC_BASE13
5445 || r_type == (unsigned int) RELOC_BASE22)
5447 struct external_nlist *sym;
5450 /* For base relative relocs, r_index is always an index
5451 into the symbol table, even if r_extern is 0. */
5452 sym = syms + r_index;
5453 type = H_GET_8 (input_bfd, sym->e_type);
5454 if ((type & N_TYPE) == N_TEXT
5456 r_section = obj_textsec (input_bfd);
5457 else if ((type & N_TYPE) == N_DATA
5459 r_section = obj_datasec (input_bfd);
5460 else if ((type & N_TYPE) == N_BSS
5462 r_section = obj_bsssec (input_bfd);
5463 else if ((type & N_TYPE) == N_ABS
5465 r_section = bfd_abs_section_ptr;
5468 relocation = (r_section->output_section->vma
5469 + r_section->output_offset
5470 + (GET_WORD (input_bfd, sym->e_value)
5475 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5477 /* If this is a PC relative reloc, then R_ADDEND is the
5478 difference between the two vmas, or
5479 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5481 old_dest_sec == section->vma
5483 old_src_sec == input_section->vma
5485 old_src_off == r_addr
5487 _bfd_final_link_relocate expects RELOCATION +
5488 R_ADDEND to be the VMA of the destination minus
5489 r_addr (the minus r_addr is because this relocation
5490 is not pcrel_offset, which is a bit confusing and
5491 should, perhaps, be changed), or
5494 new_dest_sec == output_section->vma + output_offset
5495 We arrange for this to happen by setting RELOCATION to
5496 new_dest_sec + old_src_sec - old_dest_sec
5498 If this is not a PC relative reloc, then R_ADDEND is
5499 simply the VMA of the destination, so we set
5500 RELOCATION to the change in the destination VMA, or
5501 new_dest_sec - old_dest_sec
5503 relocation = (r_section->output_section->vma
5504 + r_section->output_offset
5506 if (howto_table_ext[r_type].pc_relative)
5507 relocation += input_section->vma;
5510 if (check_dynamic_reloc != NULL)
5514 if (! ((*check_dynamic_reloc)
5515 (finfo->info, input_bfd, input_section, h,
5516 (PTR) rel, contents, &skip, &relocation)))
5522 /* Now warn if a global symbol is undefined. We could not
5523 do this earlier, because check_dynamic_reloc might want
5524 to skip this reloc. */
5526 && ! finfo->info->shared
5527 && r_type != (unsigned int) RELOC_BASE10
5528 && r_type != (unsigned int) RELOC_BASE13
5529 && r_type != (unsigned int) RELOC_BASE22)
5534 name = h->root.root.string;
5536 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5537 if (! ((*finfo->info->callbacks->undefined_symbol)
5538 (finfo->info, name, input_bfd, input_section,
5543 if (r_type != (unsigned int) RELOC_SPARC_REV32)
5544 r = MY_final_link_relocate (howto_table_ext + r_type,
5545 input_bfd, input_section,
5546 contents, r_addr, relocation,
5552 x = bfd_get_32 (input_bfd, contents + r_addr);
5553 x = x + relocation + r_addend;
5554 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
5558 if (r != bfd_reloc_ok)
5563 case bfd_reloc_outofrange:
5565 case bfd_reloc_overflow:
5570 name = h->root.root.string;
5572 || r_type == (unsigned int) RELOC_BASE10
5573 || r_type == (unsigned int) RELOC_BASE13
5574 || r_type == (unsigned int) RELOC_BASE22)
5575 name = strings + GET_WORD (input_bfd,
5576 syms[r_index].e_strx);
5581 s = aout_reloc_index_to_section (input_bfd, r_index);
5582 name = bfd_section_name (input_bfd, s);
5584 if (! ((*finfo->info->callbacks->reloc_overflow)
5585 (finfo->info, name, howto_table_ext[r_type].name,
5586 r_addend, input_bfd, input_section, r_addr)))
5598 /* Handle a link order which is supposed to generate a reloc. */
5601 aout_link_reloc_link_order (finfo, o, p)
5602 struct aout_final_link_info *finfo;
5604 struct bfd_link_order *p;
5606 struct bfd_link_order_reloc *pr;
5609 reloc_howto_type *howto;
5610 file_ptr *reloff_ptr = NULL;
5611 struct reloc_std_external srel;
5612 struct reloc_ext_external erel;
5618 if (p->type == bfd_section_reloc_link_order)
5621 if (bfd_is_abs_section (pr->u.section))
5622 r_index = N_ABS | N_EXT;
5625 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5626 r_index = pr->u.section->target_index;
5631 struct aout_link_hash_entry *h;
5633 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5635 h = ((struct aout_link_hash_entry *)
5636 bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info,
5637 pr->u.name, FALSE, FALSE, TRUE));
5638 if (h != (struct aout_link_hash_entry *) NULL
5643 /* We decided to strip this symbol, but it turns out that we
5644 can't. Note that we lose the other and desc information
5645 here. I don't think that will ever matter for a global
5649 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5655 if (! ((*finfo->info->callbacks->unattached_reloc)
5656 (finfo->info, pr->u.name, (bfd *) NULL,
5657 (asection *) NULL, (bfd_vma) 0)))
5663 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
5666 bfd_set_error (bfd_error_bad_value);
5670 if (o == obj_textsec (finfo->output_bfd))
5671 reloff_ptr = &finfo->treloff;
5672 else if (o == obj_datasec (finfo->output_bfd))
5673 reloff_ptr = &finfo->dreloff;
5677 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5680 MY_put_reloc (finfo->output_bfd, r_extern, r_index, p->offset, howto,
5690 r_pcrel = (int) howto->pc_relative;
5691 r_baserel = (howto->type & 8) != 0;
5692 r_jmptable = (howto->type & 16) != 0;
5693 r_relative = (howto->type & 32) != 0;
5694 r_length = howto->size;
5696 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5697 if (bfd_header_big_endian (finfo->output_bfd))
5699 srel.r_index[0] = r_index >> 16;
5700 srel.r_index[1] = r_index >> 8;
5701 srel.r_index[2] = r_index;
5703 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5704 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5705 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5706 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5707 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5708 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5712 srel.r_index[2] = r_index >> 16;
5713 srel.r_index[1] = r_index >> 8;
5714 srel.r_index[0] = r_index;
5716 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5717 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5718 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5719 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5720 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5721 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5725 rel_ptr = (PTR) &srel;
5727 /* We have to write the addend into the object file, since
5728 standard a.out relocs are in place. It would be more
5729 reliable if we had the current contents of the file here,
5730 rather than assuming zeroes, but we can't read the file since
5731 it was opened using bfd_openw. */
5732 if (pr->addend != 0)
5735 bfd_reloc_status_type r;
5739 size = bfd_get_reloc_size (howto);
5740 buf = (bfd_byte *) bfd_zmalloc (size);
5741 if (buf == (bfd_byte *) NULL)
5743 r = MY_relocate_contents (howto, finfo->output_bfd,
5744 (bfd_vma) pr->addend, buf);
5750 case bfd_reloc_outofrange:
5752 case bfd_reloc_overflow:
5753 if (! ((*finfo->info->callbacks->reloc_overflow)
5755 (p->type == bfd_section_reloc_link_order
5756 ? bfd_section_name (finfo->output_bfd,
5759 howto->name, pr->addend, (bfd *) NULL,
5760 (asection *) NULL, (bfd_vma) 0)))
5767 ok = bfd_set_section_contents (finfo->output_bfd, o, (PTR) buf,
5768 (file_ptr) p->offset, size);
5776 #ifdef MY_put_ext_reloc
5777 MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset,
5778 howto, &erel, pr->addend);
5780 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5782 if (bfd_header_big_endian (finfo->output_bfd))
5784 erel.r_index[0] = r_index >> 16;
5785 erel.r_index[1] = r_index >> 8;
5786 erel.r_index[2] = r_index;
5788 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5789 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5793 erel.r_index[2] = r_index >> 16;
5794 erel.r_index[1] = r_index >> 8;
5795 erel.r_index[0] = r_index;
5797 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5798 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5801 PUT_WORD (finfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
5802 #endif /* MY_put_ext_reloc */
5804 rel_ptr = (PTR) &erel;
5807 amt = obj_reloc_entry_size (finfo->output_bfd);
5808 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5809 || bfd_bwrite (rel_ptr, amt, finfo->output_bfd) != amt)
5812 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5814 /* Assert that the relocs have not run into the symbols, and that n
5815 the text relocs have not run into the data relocs. */
5816 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5817 && (reloff_ptr != &finfo->treloff
5819 <= obj_datasec (finfo->output_bfd)->rel_filepos)));