1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
29 BFD supports a number of different flavours of a.out format,
30 though the major differences are only the sizes of the
31 structures on disk, and the shape of the relocation
34 The support is split into a basic support file @file{aoutx.h}
35 and other files which derive functions from the base. One
36 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
37 adds to the basic a.out functions support for sun3, sun4, 386
38 and 29k a.out files, to create a target jump vector for a
41 This information is further split out into more specific files
42 for each machine, including @file{sunos.c} for sun3 and sun4,
43 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
44 demonstration of a 64 bit a.out format.
46 The base file @file{aoutx.h} defines general mechanisms for
47 reading and writing records to and from disk and various
48 other methods which BFD requires. It is included by
49 @file{aout32.c} and @file{aout64.c} to form the names
50 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
52 As an example, this is what goes on to make the back end for a
53 sun4, from @file{aout32.c}:
55 | #define ARCH_SIZE 32
61 | aout_32_canonicalize_reloc
62 | aout_32_find_nearest_line
64 | aout_32_get_reloc_upper_bound
69 | #define TARGET_NAME "a.out-sunos-big"
70 | #define VECNAME sunos_big_vec
73 requires all the names from @file{aout32.c}, and produces the jump vector
77 The file @file{host-aout.c} is a special case. It is for a large set
78 of hosts that use ``more or less standard'' a.out files, and
79 for which cross-debugging is not interesting. It uses the
80 standard 32-bit a.out support routines, but determines the
81 file offsets and addresses of the text, data, and BSS
82 sections, the machine architecture and machine type, and the
83 entry point address, in a host-dependent manner. Once these
84 values have been determined, generic code is used to handle
87 When porting it to run on a new system, you must supply:
91 | HOST_MACHINE_ARCH (optional)
92 | HOST_MACHINE_MACHINE (optional)
93 | HOST_TEXT_START_ADDR
96 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
97 values, plus the structures and macros defined in @file{a.out.h} on
98 your host system, will produce a BFD target that will access
99 ordinary a.out files on your host. To configure a new machine
100 to use @file{host-aout.c}, specify:
102 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
103 | TDEPFILES= host-aout.o trad-core.o
105 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
107 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
108 configuration is selected.
113 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
114 Doesn't matter what the setting of WP_TEXT is on output, but it'll
116 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
117 * Any BFD with both flags clear is OMAGIC.
118 (Just want to make these explicit, so the conditions tested in this
119 file make sense if you're more familiar with a.out than with BFD.) */
121 #define KEEPIT udata.i
130 #include "aout/aout64.h"
131 #include "aout/stab_gnu.h"
134 static boolean aout_get_external_symbols PARAMS ((bfd *));
135 static boolean translate_from_native_sym_flags
136 PARAMS ((bfd *, aout_symbol_type *));
137 static boolean translate_to_native_sym_flags
138 PARAMS ((bfd *, asymbol *, struct external_nlist *));
139 static void adjust_o_magic PARAMS ((bfd *, struct internal_exec *));
140 static void adjust_z_magic PARAMS ((bfd *, struct internal_exec *));
141 static void adjust_n_magic PARAMS ((bfd *, struct internal_exec *));
148 The file @file{aoutx.h} provides for both the @emph{standard}
149 and @emph{extended} forms of a.out relocation records.
151 The standard records contain only an
152 address, a symbol index, and a type field. The extended records
153 (used on 29ks and sparcs) also have a full integer for an
157 #ifndef CTOR_TABLE_RELOC_HOWTO
158 #define CTOR_TABLE_RELOC_IDX 2
159 #define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
160 ? howto_table_ext : howto_table_std) \
161 + CTOR_TABLE_RELOC_IDX)
164 #ifndef MY_swap_std_reloc_in
165 #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
168 #ifndef MY_swap_ext_reloc_in
169 #define MY_swap_ext_reloc_in NAME(aout,swap_ext_reloc_in)
172 #ifndef MY_swap_std_reloc_out
173 #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
176 #ifndef MY_swap_ext_reloc_out
177 #define MY_swap_ext_reloc_out NAME(aout,swap_ext_reloc_out)
180 #ifndef MY_final_link_relocate
181 #define MY_final_link_relocate _bfd_final_link_relocate
184 #ifndef MY_relocate_contents
185 #define MY_relocate_contents _bfd_relocate_contents
188 #define howto_table_ext NAME(aout,ext_howto_table)
189 #define howto_table_std NAME(aout,std_howto_table)
191 reloc_howto_type howto_table_ext[] =
193 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
194 HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false),
195 HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false),
196 HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false),
197 HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false),
198 HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false),
199 HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false),
200 HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false),
201 HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false),
202 HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false),
203 HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false),
204 HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false),
205 HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false),
206 HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false),
207 HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false),
208 HOWTO(RELOC_BASE10, 0, 2, 10, false, 0, complain_overflow_dont,0,"BASE10", false, 0,0x000003ff, false),
209 HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_signed,0,"BASE13", false, 0,0x00001fff, false),
210 HOWTO(RELOC_BASE22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x003fffff, false),
211 HOWTO(RELOC_PC10, 0, 2, 10, true, 0, complain_overflow_dont,0,"PC10", false, 0,0x000003ff, true),
212 HOWTO(RELOC_PC22, 10, 2, 22, true, 0, complain_overflow_signed,0,"PC22", false, 0,0x003fffff, true),
213 HOWTO(RELOC_JMP_TBL,2, 2, 30, true, 0, complain_overflow_signed,0,"JMP_TBL", false, 0,0x3fffffff, false),
214 HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false),
215 HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false),
216 HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false),
217 HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
218 HOWTO(0, 0, 0, 0, false, 0, complain_overflow_dont, 0, "R_SPARC_NONE", false,0,0x00000000,true),
219 HOWTO(0, 0, 0, 0, false, 0, complain_overflow_dont, 0, "R_SPARC_NONE", false,0,0x00000000,true),
220 #define RELOC_SPARC_REV32 RELOC_WDISP19
221 HOWTO(RELOC_SPARC_REV32, 0, 2, 32, false, 0, complain_overflow_dont,0,"R_SPARC_REV32", false, 0,0xffffffff, false),
224 /* Convert standard reloc records to "arelent" format (incl byte swap). */
226 reloc_howto_type howto_table_std[] = {
227 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
228 HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false),
229 HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false),
230 HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false),
231 HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false),
232 HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
233 HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
234 HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
235 HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
236 HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false),
237 HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false),
238 HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false),
244 HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false),
260 HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
268 HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false),
271 #define TABLE_SIZE(TABLE) (sizeof (TABLE)/sizeof (TABLE[0]))
274 NAME(aout,reloc_type_lookup) (abfd,code)
276 bfd_reloc_code_real_type code;
278 #define EXT(i,j) case i: return &howto_table_ext[j]
279 #define STD(i,j) case i: return &howto_table_std[j]
280 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
281 if (code == BFD_RELOC_CTOR)
282 switch (bfd_get_arch_info (abfd)->bits_per_address)
294 EXT (BFD_RELOC_8, 0);
295 EXT (BFD_RELOC_16, 1);
296 EXT (BFD_RELOC_32, 2);
297 EXT (BFD_RELOC_HI22, 8);
298 EXT (BFD_RELOC_LO10, 11);
299 EXT (BFD_RELOC_32_PCREL_S2, 6);
300 EXT (BFD_RELOC_SPARC_WDISP22, 7);
301 EXT (BFD_RELOC_SPARC13, 10);
302 EXT (BFD_RELOC_SPARC_GOT10, 14);
303 EXT (BFD_RELOC_SPARC_BASE13, 15);
304 EXT (BFD_RELOC_SPARC_GOT13, 15);
305 EXT (BFD_RELOC_SPARC_GOT22, 16);
306 EXT (BFD_RELOC_SPARC_PC10, 17);
307 EXT (BFD_RELOC_SPARC_PC22, 18);
308 EXT (BFD_RELOC_SPARC_WPLT30, 19);
309 EXT (BFD_RELOC_SPARC_REV32, 26);
310 default: return (reloc_howto_type *) NULL;
316 STD (BFD_RELOC_16, 1);
317 STD (BFD_RELOC_32, 2);
318 STD (BFD_RELOC_8_PCREL, 4);
319 STD (BFD_RELOC_16_PCREL, 5);
320 STD (BFD_RELOC_32_PCREL, 6);
321 STD (BFD_RELOC_16_BASEREL, 9);
322 STD (BFD_RELOC_32_BASEREL, 10);
323 default: return (reloc_howto_type *) NULL;
329 Internal entry points
332 @file{aoutx.h} exports several routines for accessing the
333 contents of an a.out file, which are gathered and exported in
334 turn by various format specific files (eg sunos.c).
340 aout_@var{size}_swap_exec_header_in
343 void aout_@var{size}_swap_exec_header_in,
345 struct external_exec *raw_bytes,
346 struct internal_exec *execp);
349 Swap the information in an executable header @var{raw_bytes} taken
350 from a raw byte stream memory image into the internal exec header
351 structure @var{execp}.
354 #ifndef NAME_swap_exec_header_in
356 NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
358 struct external_exec *raw_bytes;
359 struct internal_exec *execp;
361 struct external_exec *bytes = (struct external_exec *)raw_bytes;
363 /* The internal_exec structure has some fields that are unused in this
364 configuration (IE for i960), so ensure that all such uninitialized
365 fields are zero'd out. There are places where two of these structs
366 are memcmp'd, and thus the contents do matter. */
367 memset ((PTR) execp, 0, sizeof (struct internal_exec));
368 /* Now fill in fields in the execp, from the bytes in the raw data. */
369 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
370 execp->a_text = GET_WORD (abfd, bytes->e_text);
371 execp->a_data = GET_WORD (abfd, bytes->e_data);
372 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
373 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
374 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
375 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
376 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
378 #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
383 aout_@var{size}_swap_exec_header_out
386 void aout_@var{size}_swap_exec_header_out
388 struct internal_exec *execp,
389 struct external_exec *raw_bytes);
392 Swap the information in an internal exec header structure
393 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
396 NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
398 struct internal_exec *execp;
399 struct external_exec *raw_bytes;
401 struct external_exec *bytes = (struct external_exec *)raw_bytes;
403 /* Now fill in fields in the raw data, from the fields in the exec struct. */
404 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
405 PUT_WORD (abfd, execp->a_text , bytes->e_text);
406 PUT_WORD (abfd, execp->a_data , bytes->e_data);
407 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
408 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
409 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
410 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
411 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
414 /* Make all the section for an a.out file. */
417 NAME(aout,make_sections) (abfd)
420 if (obj_textsec (abfd) == (asection *) NULL
421 && bfd_make_section (abfd, ".text") == (asection *) NULL)
423 if (obj_datasec (abfd) == (asection *) NULL
424 && bfd_make_section (abfd, ".data") == (asection *) NULL)
426 if (obj_bsssec (abfd) == (asection *) NULL
427 && bfd_make_section (abfd, ".bss") == (asection *) NULL)
434 aout_@var{size}_some_aout_object_p
437 const bfd_target *aout_@var{size}_some_aout_object_p
439 const bfd_target *(*callback_to_real_object_p) ());
442 Some a.out variant thinks that the file open in @var{abfd}
443 checking is an a.out file. Do some more checking, and set up
444 for access if it really is. Call back to the calling
445 environment's "finish up" function just before returning, to
446 handle any last-minute setup.
450 NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
452 struct internal_exec *execp;
453 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
455 struct aout_data_struct *rawptr, *oldrawptr;
456 const bfd_target *result;
458 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
462 oldrawptr = abfd->tdata.aout_data;
463 abfd->tdata.aout_data = rawptr;
465 /* Copy the contents of the old tdata struct.
466 In particular, we want the subformat, since for hpux it was set in
467 hp300hpux.c:swap_exec_header_in and will be used in
468 hp300hpux.c:callback. */
469 if (oldrawptr != NULL)
470 *abfd->tdata.aout_data = *oldrawptr;
472 abfd->tdata.aout_data->a.hdr = &rawptr->e;
473 *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
474 execp = abfd->tdata.aout_data->a.hdr;
476 /* Set the file flags */
477 abfd->flags = BFD_NO_FLAGS;
478 if (execp->a_drsize || execp->a_trsize)
479 abfd->flags |= HAS_RELOC;
480 /* Setting of EXEC_P has been deferred to the bottom of this function */
482 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
483 if (N_DYNAMIC(*execp))
484 abfd->flags |= DYNAMIC;
486 if (N_MAGIC (*execp) == ZMAGIC)
488 abfd->flags |= D_PAGED | WP_TEXT;
489 adata (abfd).magic = z_magic;
491 else if (N_MAGIC (*execp) == QMAGIC)
493 abfd->flags |= D_PAGED | WP_TEXT;
494 adata (abfd).magic = z_magic;
495 adata (abfd).subformat = q_magic_format;
497 else if (N_MAGIC (*execp) == NMAGIC)
499 abfd->flags |= WP_TEXT;
500 adata (abfd).magic = n_magic;
502 else if (N_MAGIC (*execp) == OMAGIC
503 || N_MAGIC (*execp) == BMAGIC)
504 adata (abfd).magic = o_magic;
507 /* Should have been checked with N_BADMAG before this routine
512 bfd_get_start_address (abfd) = execp->a_entry;
514 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
515 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
517 /* The default relocation entry size is that of traditional V7 Unix. */
518 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
520 /* The default symbol entry size is that of traditional Unix. */
521 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
524 bfd_init_window (&obj_aout_sym_window (abfd));
525 bfd_init_window (&obj_aout_string_window (abfd));
527 obj_aout_external_syms (abfd) = NULL;
528 obj_aout_external_strings (abfd) = NULL;
529 obj_aout_sym_hashes (abfd) = NULL;
531 if (! NAME(aout,make_sections) (abfd))
534 obj_datasec (abfd)->_raw_size = execp->a_data;
535 obj_bsssec (abfd)->_raw_size = execp->a_bss;
537 obj_textsec (abfd)->flags =
538 (execp->a_trsize != 0
539 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
540 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
541 obj_datasec (abfd)->flags =
542 (execp->a_drsize != 0
543 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
544 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
545 obj_bsssec (abfd)->flags = SEC_ALLOC;
547 #ifdef THIS_IS_ONLY_DOCUMENTATION
548 /* The common code can't fill in these things because they depend
549 on either the start address of the text segment, the rounding
550 up of virtual addresses between segments, or the starting file
551 position of the text segment -- all of which varies among different
552 versions of a.out. */
554 /* Call back to the format-dependent code to fill in the rest of the
555 fields and do any further cleanup. Things that should be filled
556 in by the callback: */
558 struct exec *execp = exec_hdr (abfd);
560 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
561 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
562 /* data and bss are already filled in since they're so standard */
564 /* The virtual memory addresses of the sections */
565 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
566 obj_datasec (abfd)->vma = N_DATADDR(*execp);
567 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
569 /* The file offsets of the sections */
570 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
571 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
573 /* The file offsets of the relocation info */
574 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
575 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
577 /* The file offsets of the string table and symbol table. */
578 obj_str_filepos (abfd) = N_STROFF (*execp);
579 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
581 /* Determine the architecture and machine type of the object file. */
582 switch (N_MACHTYPE (*exec_hdr (abfd))) {
584 abfd->obj_arch = bfd_arch_obscure;
588 adata(abfd)->page_size = TARGET_PAGE_SIZE;
589 adata(abfd)->segment_size = SEGMENT_SIZE;
590 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
594 /* The architecture is encoded in various ways in various a.out variants,
595 or is not encoded at all in some of them. The relocation size depends
596 on the architecture and the a.out variant. Finally, the return value
597 is the bfd_target vector in use. If an error occurs, return zero and
598 set bfd_error to the appropriate error code.
600 Formats such as b.out, which have additional fields in the a.out
601 header, should cope with them in this callback as well. */
602 #endif /* DOCUMENTATION */
604 result = (*callback_to_real_object_p) (abfd);
606 /* Now that the segment addresses have been worked out, take a better
607 guess at whether the file is executable. If the entry point
608 is within the text segment, assume it is. (This makes files
609 executable even if their entry point address is 0, as long as
610 their text starts at zero.).
612 This test had to be changed to deal with systems where the text segment
613 runs at a different location than the default. The problem is that the
614 entry address can appear to be outside the text segment, thus causing an
615 erroneous conclusion that the file isn't executable.
617 To fix this, we now accept any non-zero entry point as an indication of
618 executability. This will work most of the time, since only the linker
619 sets the entry point, and that is likely to be non-zero for most systems. */
621 if (execp->a_entry != 0
622 || (execp->a_entry >= obj_textsec(abfd)->vma
623 && execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
624 abfd->flags |= EXEC_P;
628 struct stat stat_buf;
630 /* The original heuristic doesn't work in some important cases.
631 The a.out file has no information about the text start
632 address. For files (like kernels) linked to non-standard
633 addresses (ld -Ttext nnn) the entry point may not be between
634 the default text start (obj_textsec(abfd)->vma) and
635 (obj_textsec(abfd)->vma) + text size. This is not just a mach
636 issue. Many kernels are loaded at non standard addresses. */
637 if (abfd->iostream != NULL
638 && (abfd->flags & BFD_IN_MEMORY) == 0
639 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
640 && ((stat_buf.st_mode & 0111) != 0))
641 abfd->flags |= EXEC_P;
643 #endif /* STAT_FOR_EXEC */
647 #if 0 /* These should be set correctly anyways. */
648 abfd->sections = obj_textsec (abfd);
649 obj_textsec (abfd)->next = obj_datasec (abfd);
650 obj_datasec (abfd)->next = obj_bsssec (abfd);
656 abfd->tdata.aout_data = oldrawptr;
663 aout_@var{size}_mkobject
666 boolean aout_@var{size}_mkobject, (bfd *abfd);
669 Initialize BFD @var{abfd} for use with a.out files.
673 NAME(aout,mkobject) (abfd)
676 struct aout_data_struct *rawptr;
678 bfd_set_error (bfd_error_system_call);
680 /* Use an intermediate variable for clarity */
681 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
686 abfd->tdata.aout_data = rawptr;
687 exec_hdr (abfd) = &(rawptr->e);
689 obj_textsec (abfd) = (asection *)NULL;
690 obj_datasec (abfd) = (asection *)NULL;
691 obj_bsssec (abfd) = (asection *)NULL;
698 aout_@var{size}_machine_type
701 enum machine_type aout_@var{size}_machine_type
702 (enum bfd_architecture arch,
703 unsigned long machine));
706 Keep track of machine architecture and machine type for
707 a.out's. Return the <<machine_type>> for a particular
708 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
709 and machine can't be represented in a.out format.
711 If the architecture is understood, machine type 0 (default)
712 is always understood.
716 NAME(aout,machine_type) (arch, machine, unknown)
717 enum bfd_architecture arch;
718 unsigned long machine;
721 enum machine_type arch_flags;
723 arch_flags = M_UNKNOWN;
729 || machine == bfd_mach_sparc
730 || machine == bfd_mach_sparc_sparclite
731 || machine == bfd_mach_sparc_sparclite_le
732 || machine == bfd_mach_sparc_v9)
733 arch_flags = M_SPARC;
734 else if (machine == bfd_mach_sparc_sparclet)
735 arch_flags = M_SPARCLET;
740 case 0: arch_flags = M_68010; break;
741 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = false; break;
742 case bfd_mach_m68010: arch_flags = M_68010; break;
743 case bfd_mach_m68020: arch_flags = M_68020; break;
744 default: arch_flags = M_UNKNOWN; break;
749 if (machine == 0) arch_flags = M_386;
753 if (machine == 0) arch_flags = M_29K;
757 if (machine == 0) arch_flags = M_ARM;
763 case bfd_mach_mips3000:
764 case bfd_mach_mips3900:
765 arch_flags = M_MIPS1;
767 case bfd_mach_mips6000:
768 arch_flags = M_MIPS2;
770 case bfd_mach_mips4000:
771 case bfd_mach_mips4010:
772 case bfd_mach_mips4100:
773 case bfd_mach_mips4300:
774 case bfd_mach_mips4400:
775 case bfd_mach_mips4600:
776 case bfd_mach_mips4650:
777 case bfd_mach_mips8000:
778 case bfd_mach_mips10000:
779 case bfd_mach_mips12000:
780 case bfd_mach_mips16:
781 case bfd_mach_mips32:
782 case bfd_mach_mips32_4k:
784 case bfd_mach_mips64:
785 case bfd_mach_mips_sb1:
786 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
787 arch_flags = M_MIPS2;
790 arch_flags = M_UNKNOWN;
797 case 0: arch_flags = M_NS32532; break;
798 case 32032: arch_flags = M_NS32032; break;
799 case 32532: arch_flags = M_NS32532; break;
800 default: arch_flags = M_UNKNOWN; break;
809 if (machine == 0 || machine == 255) arch_flags = M_CRIS;
813 arch_flags = M_UNKNOWN;
816 if (arch_flags != M_UNKNOWN)
824 aout_@var{size}_set_arch_mach
827 boolean aout_@var{size}_set_arch_mach,
829 enum bfd_architecture arch,
830 unsigned long machine));
833 Set the architecture and the machine of the BFD @var{abfd} to the
834 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
835 can support the architecture required.
839 NAME(aout,set_arch_mach) (abfd, arch, machine)
841 enum bfd_architecture arch;
842 unsigned long machine;
844 if (! bfd_default_set_arch_mach (abfd, arch, machine))
847 if (arch != bfd_arch_unknown)
851 NAME(aout,machine_type) (arch, machine, &unknown);
856 /* Determine the size of a relocation entry */
861 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
864 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
868 return (*aout_backend_info(abfd)->set_sizes) (abfd);
872 adjust_o_magic (abfd, execp)
874 struct internal_exec *execp;
876 file_ptr pos = adata (abfd).exec_bytes_size;
881 obj_textsec(abfd)->filepos = pos;
882 if (!obj_textsec(abfd)->user_set_vma)
883 obj_textsec(abfd)->vma = vma;
885 vma = obj_textsec(abfd)->vma;
887 pos += obj_textsec(abfd)->_raw_size;
888 vma += obj_textsec(abfd)->_raw_size;
891 if (!obj_datasec(abfd)->user_set_vma)
893 #if 0 /* ?? Does alignment in the file image really matter? */
894 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
896 obj_textsec(abfd)->_raw_size += pad;
899 obj_datasec(abfd)->vma = vma;
902 vma = obj_datasec(abfd)->vma;
903 obj_datasec(abfd)->filepos = pos;
904 pos += obj_datasec(abfd)->_raw_size;
905 vma += obj_datasec(abfd)->_raw_size;
908 if (!obj_bsssec(abfd)->user_set_vma)
911 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
913 obj_datasec(abfd)->_raw_size += pad;
916 obj_bsssec(abfd)->vma = vma;
920 /* The VMA of the .bss section is set by the the VMA of the
921 .data section plus the size of the .data section. We may
922 need to add padding bytes to make this true. */
923 pad = obj_bsssec (abfd)->vma - vma;
926 obj_datasec (abfd)->_raw_size += pad;
930 obj_bsssec(abfd)->filepos = pos;
932 /* Fix up the exec header. */
933 execp->a_text = obj_textsec(abfd)->_raw_size;
934 execp->a_data = obj_datasec(abfd)->_raw_size;
935 execp->a_bss = obj_bsssec(abfd)->_raw_size;
936 N_SET_MAGIC (*execp, OMAGIC);
940 adjust_z_magic (abfd, execp)
942 struct internal_exec *execp;
944 bfd_size_type data_pad, text_pad;
946 CONST struct aout_backend_data *abdp;
947 int ztih; /* Nonzero if text includes exec header. */
949 abdp = aout_backend_info (abfd);
953 && (abdp->text_includes_header
954 || obj_aout_subformat (abfd) == q_magic_format));
955 obj_textsec(abfd)->filepos = (ztih
956 ? adata(abfd).exec_bytes_size
957 : adata(abfd).zmagic_disk_block_size);
958 if (! obj_textsec(abfd)->user_set_vma)
960 /* ?? Do we really need to check for relocs here? */
961 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
964 ? (abdp->default_text_vma
965 + adata(abfd).exec_bytes_size)
966 : abdp->default_text_vma));
971 /* The .text section is being loaded at an unusual address. We
972 may need to pad it such that the .data section starts at a page
975 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
976 & (adata (abfd).page_size - 1));
978 text_pad = ((- obj_textsec (abfd)->vma)
979 & (adata (abfd).page_size - 1));
982 /* Find start of data. */
985 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
986 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
990 /* Note that if page_size == zmagic_disk_block_size, then
991 filepos == page_size, and this case is the same as the ztih
993 text_end = obj_textsec (abfd)->_raw_size;
994 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
995 text_end += obj_textsec (abfd)->filepos;
997 obj_textsec(abfd)->_raw_size += text_pad;
998 text_end += text_pad;
1001 if (!obj_datasec(abfd)->user_set_vma)
1004 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
1005 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1007 if (abdp && abdp->zmagic_mapped_contiguous)
1009 text_pad = (obj_datasec(abfd)->vma
1010 - obj_textsec(abfd)->vma
1011 - obj_textsec(abfd)->_raw_size);
1012 obj_textsec(abfd)->_raw_size += text_pad;
1014 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
1015 + obj_textsec(abfd)->_raw_size);
1017 /* Fix up exec header while we're at it. */
1018 execp->a_text = obj_textsec(abfd)->_raw_size;
1019 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
1020 execp->a_text += adata(abfd).exec_bytes_size;
1021 if (obj_aout_subformat (abfd) == q_magic_format)
1022 N_SET_MAGIC (*execp, QMAGIC);
1024 N_SET_MAGIC (*execp, ZMAGIC);
1026 /* Spec says data section should be rounded up to page boundary. */
1027 obj_datasec(abfd)->_raw_size
1028 = align_power (obj_datasec(abfd)->_raw_size,
1029 obj_bsssec(abfd)->alignment_power);
1030 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
1031 adata(abfd).page_size);
1032 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
1035 if (!obj_bsssec(abfd)->user_set_vma)
1036 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
1037 + obj_datasec(abfd)->_raw_size);
1038 /* If the BSS immediately follows the data section and extra space
1039 in the page is left after the data section, fudge data
1040 in the header so that the bss section looks smaller by that
1041 amount. We'll start the bss section there, and lie to the OS.
1042 (Note that a linker script, as well as the above assignment,
1043 could have explicitly set the BSS vma to immediately follow
1044 the data section.) */
1045 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
1046 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
1047 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
1048 obj_bsssec(abfd)->_raw_size - data_pad;
1050 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1054 adjust_n_magic (abfd, execp)
1056 struct internal_exec *execp;
1058 file_ptr pos = adata(abfd).exec_bytes_size;
1063 obj_textsec(abfd)->filepos = pos;
1064 if (!obj_textsec(abfd)->user_set_vma)
1065 obj_textsec(abfd)->vma = vma;
1067 vma = obj_textsec(abfd)->vma;
1068 pos += obj_textsec(abfd)->_raw_size;
1069 vma += obj_textsec(abfd)->_raw_size;
1072 obj_datasec(abfd)->filepos = pos;
1073 if (!obj_datasec(abfd)->user_set_vma)
1074 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1075 vma = obj_datasec(abfd)->vma;
1077 /* Since BSS follows data immediately, see if it needs alignment. */
1078 vma += obj_datasec(abfd)->_raw_size;
1079 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
1080 obj_datasec(abfd)->_raw_size += pad;
1081 pos += obj_datasec(abfd)->_raw_size;
1084 if (!obj_bsssec(abfd)->user_set_vma)
1085 obj_bsssec(abfd)->vma = vma;
1087 vma = obj_bsssec(abfd)->vma;
1089 /* Fix up exec header. */
1090 execp->a_text = obj_textsec(abfd)->_raw_size;
1091 execp->a_data = obj_datasec(abfd)->_raw_size;
1092 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1093 N_SET_MAGIC (*execp, NMAGIC);
1097 NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1099 bfd_size_type *text_size;
1100 file_ptr *text_end ATTRIBUTE_UNUSED;
1102 struct internal_exec *execp = exec_hdr (abfd);
1104 if (! NAME(aout,make_sections) (abfd))
1107 if (adata(abfd).magic != undecided_magic)
1110 obj_textsec(abfd)->_raw_size =
1111 align_power(obj_textsec(abfd)->_raw_size,
1112 obj_textsec(abfd)->alignment_power);
1114 *text_size = obj_textsec (abfd)->_raw_size;
1115 /* Rule (heuristic) for when to pad to a new page. Note that there
1116 are (at least) two ways demand-paged (ZMAGIC) files have been
1117 handled. Most Berkeley-based systems start the text segment at
1118 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1119 segment right after the exec header; the latter is counted in the
1120 text segment size, and is paged in by the kernel with the rest of
1123 /* This perhaps isn't the right way to do this, but made it simpler for me
1124 to understand enough to implement it. Better would probably be to go
1125 right from BFD flags to alignment/positioning characteristics. But the
1126 old code was sloppy enough about handling the flags, and had enough
1127 other magic, that it was a little hard for me to understand. I think
1128 I understand it better now, but I haven't time to do the cleanup this
1131 if (abfd->flags & D_PAGED)
1132 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1133 adata(abfd).magic = z_magic;
1134 else if (abfd->flags & WP_TEXT)
1135 adata(abfd).magic = n_magic;
1137 adata(abfd).magic = o_magic;
1139 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1141 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1143 switch (adata(abfd).magic) {
1144 case n_magic: str = "NMAGIC"; break;
1145 case o_magic: str = "OMAGIC"; break;
1146 case z_magic: str = "ZMAGIC"; break;
1151 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1152 obj_textsec(abfd)->alignment_power,
1153 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1154 obj_datasec(abfd)->alignment_power,
1155 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1156 obj_bsssec(abfd)->alignment_power);
1160 switch (adata(abfd).magic)
1163 adjust_o_magic (abfd, execp);
1166 adjust_z_magic (abfd, execp);
1169 adjust_n_magic (abfd, execp);
1175 #ifdef BFD_AOUT_DEBUG
1176 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1177 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1178 obj_textsec(abfd)->filepos,
1179 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1180 obj_datasec(abfd)->filepos,
1181 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1189 aout_@var{size}_new_section_hook
1192 boolean aout_@var{size}_new_section_hook,
1194 asection *newsect));
1197 Called by the BFD in response to a @code{bfd_make_section}
1201 NAME(aout,new_section_hook) (abfd, newsect)
1205 /* align to double at least */
1206 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
1208 if (bfd_get_format (abfd) == bfd_object)
1210 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1211 obj_textsec(abfd)= newsect;
1212 newsect->target_index = N_TEXT;
1216 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1217 obj_datasec(abfd) = newsect;
1218 newsect->target_index = N_DATA;
1222 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1223 obj_bsssec(abfd) = newsect;
1224 newsect->target_index = N_BSS;
1230 /* We allow more than three sections internally */
1235 NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1240 bfd_size_type count;
1243 bfd_size_type text_size;
1245 if (! abfd->output_has_begun)
1247 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1251 if (section == obj_bsssec (abfd))
1253 bfd_set_error (bfd_error_no_contents);
1257 if (section != obj_textsec (abfd)
1258 && section != obj_datasec (abfd))
1260 (*_bfd_error_handler)
1261 (_("%s: can not represent section `%s' in a.out object file format"),
1262 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1263 bfd_set_error (bfd_error_nonrepresentable_section);
1269 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1270 || bfd_write (location, 1, count, abfd) != count)
1277 /* Read the external symbols from an a.out file. */
1280 aout_get_external_symbols (abfd)
1283 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1285 bfd_size_type count;
1286 struct external_nlist *syms;
1288 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1291 if (bfd_get_file_window (abfd,
1292 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
1293 &obj_aout_sym_window (abfd), true) == false)
1295 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1297 /* We allocate using malloc to make the values easy to free
1298 later on. If we put them on the objalloc it might not be
1299 possible to free them. */
1300 syms = ((struct external_nlist *)
1301 bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
1302 if (syms == (struct external_nlist *) NULL && count != 0)
1305 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1306 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1307 != exec_hdr (abfd)->a_syms))
1314 obj_aout_external_syms (abfd) = syms;
1315 obj_aout_external_sym_count (abfd) = count;
1318 if (obj_aout_external_strings (abfd) == NULL
1319 && exec_hdr (abfd)->a_syms != 0)
1321 unsigned char string_chars[BYTES_IN_WORD];
1322 bfd_size_type stringsize;
1325 /* Get the size of the strings. */
1326 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1327 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1330 stringsize = GET_WORD (abfd, string_chars);
1333 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
1334 &obj_aout_string_window (abfd), true) == false)
1336 strings = (char *) obj_aout_string_window (abfd).data;
1338 strings = (char *) bfd_malloc ((size_t) stringsize + 1);
1339 if (strings == NULL)
1342 /* Skip space for the string count in the buffer for convenience
1343 when using indexes. */
1344 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1346 != stringsize - BYTES_IN_WORD)
1353 /* Ensure that a zero index yields an empty string. */
1356 strings[stringsize - 1] = 0;
1358 obj_aout_external_strings (abfd) = strings;
1359 obj_aout_external_string_size (abfd) = stringsize;
1365 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1366 and symbol->value fields of CACHE_PTR will be set from the a.out
1367 nlist structure. This function is responsible for setting
1368 symbol->flags and symbol->section, and adjusting symbol->value. */
1371 translate_from_native_sym_flags (abfd, cache_ptr)
1373 aout_symbol_type *cache_ptr;
1377 if ((cache_ptr->type & N_STAB) != 0
1378 || cache_ptr->type == N_FN)
1382 /* This is a debugging symbol. */
1384 cache_ptr->symbol.flags = BSF_DEBUGGING;
1386 /* Work out the symbol section. */
1387 switch (cache_ptr->type & N_TYPE)
1391 sec = obj_textsec (abfd);
1394 sec = obj_datasec (abfd);
1397 sec = obj_bsssec (abfd);
1401 sec = bfd_abs_section_ptr;
1405 cache_ptr->symbol.section = sec;
1406 cache_ptr->symbol.value -= sec->vma;
1411 /* Get the default visibility. This does not apply to all types, so
1412 we just hold it in a local variable to use if wanted. */
1413 if ((cache_ptr->type & N_EXT) == 0)
1414 visible = BSF_LOCAL;
1416 visible = BSF_GLOBAL;
1418 switch (cache_ptr->type)
1421 case N_ABS: case N_ABS | N_EXT:
1422 cache_ptr->symbol.section = bfd_abs_section_ptr;
1423 cache_ptr->symbol.flags = visible;
1426 case N_UNDF | N_EXT:
1427 if (cache_ptr->symbol.value != 0)
1429 /* This is a common symbol. */
1430 cache_ptr->symbol.flags = BSF_GLOBAL;
1431 cache_ptr->symbol.section = bfd_com_section_ptr;
1435 cache_ptr->symbol.flags = 0;
1436 cache_ptr->symbol.section = bfd_und_section_ptr;
1440 case N_TEXT: case N_TEXT | N_EXT:
1441 cache_ptr->symbol.section = obj_textsec (abfd);
1442 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1443 cache_ptr->symbol.flags = visible;
1446 /* N_SETV symbols used to represent set vectors placed in the
1447 data section. They are no longer generated. Theoretically,
1448 it was possible to extract the entries and combine them with
1449 new ones, although I don't know if that was ever actually
1450 done. Unless that feature is restored, treat them as data
1452 case N_SETV: case N_SETV | N_EXT:
1453 case N_DATA: case N_DATA | N_EXT:
1454 cache_ptr->symbol.section = obj_datasec (abfd);
1455 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1456 cache_ptr->symbol.flags = visible;
1459 case N_BSS: case N_BSS | N_EXT:
1460 cache_ptr->symbol.section = obj_bsssec (abfd);
1461 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1462 cache_ptr->symbol.flags = visible;
1465 case N_SETA: case N_SETA | N_EXT:
1466 case N_SETT: case N_SETT | N_EXT:
1467 case N_SETD: case N_SETD | N_EXT:
1468 case N_SETB: case N_SETB | N_EXT:
1470 /* This code is no longer needed. It used to be used to make
1471 the linker handle set symbols, but they are now handled in
1472 the add_symbols routine instead. */
1475 arelent_chain *reloc;
1476 asection *into_section;
1478 /* This is a set symbol. The name of the symbol is the name
1479 of the set (e.g., __CTOR_LIST__). The value of the symbol
1480 is the value to add to the set. We create a section with
1481 the same name as the symbol, and add a reloc to insert the
1482 appropriate value into the section.
1484 This action is actually obsolete; it used to make the
1485 linker do the right thing, but the linker no longer uses
1488 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1489 if (section == NULL)
1493 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1497 strcpy (copy, cache_ptr->symbol.name);
1498 section = bfd_make_section (abfd, copy);
1499 if (section == NULL)
1503 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1507 /* Build a relocation entry for the constructor. */
1508 switch (cache_ptr->type & N_TYPE)
1511 into_section = bfd_abs_section_ptr;
1512 cache_ptr->type = N_ABS;
1515 into_section = obj_textsec (abfd);
1516 cache_ptr->type = N_TEXT;
1519 into_section = obj_datasec (abfd);
1520 cache_ptr->type = N_DATA;
1523 into_section = obj_bsssec (abfd);
1524 cache_ptr->type = N_BSS;
1528 /* Build a relocation pointing into the constructor section
1529 pointing at the symbol in the set vector specified. */
1530 reloc->relent.addend = cache_ptr->symbol.value;
1531 cache_ptr->symbol.section = into_section;
1532 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
1534 /* We modify the symbol to belong to a section depending upon
1535 the name of the symbol, and add to the size of the section
1536 to contain a pointer to the symbol. Build a reloc entry to
1537 relocate to this symbol attached to this section. */
1538 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
1540 section->reloc_count++;
1541 section->alignment_power = 2;
1543 reloc->next = section->constructor_chain;
1544 section->constructor_chain = reloc;
1545 reloc->relent.address = section->_raw_size;
1546 section->_raw_size += BYTES_IN_WORD;
1548 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
1552 switch (cache_ptr->type & N_TYPE)
1555 cache_ptr->symbol.section = bfd_abs_section_ptr;
1558 cache_ptr->symbol.section = obj_textsec (abfd);
1561 cache_ptr->symbol.section = obj_datasec (abfd);
1564 cache_ptr->symbol.section = obj_bsssec (abfd);
1568 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1573 /* This symbol is the text of a warning message. The next
1574 symbol is the symbol to associate the warning with. If a
1575 reference is made to that symbol, a warning is issued. */
1576 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1577 cache_ptr->symbol.section = bfd_abs_section_ptr;
1580 case N_INDR: case N_INDR | N_EXT:
1581 /* An indirect symbol. This consists of two symbols in a row.
1582 The first symbol is the name of the indirection. The second
1583 symbol is the name of the target. A reference to the first
1584 symbol becomes a reference to the second. */
1585 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1586 cache_ptr->symbol.section = bfd_ind_section_ptr;
1590 cache_ptr->symbol.section = bfd_und_section_ptr;
1591 cache_ptr->symbol.flags = BSF_WEAK;
1595 cache_ptr->symbol.section = bfd_abs_section_ptr;
1596 cache_ptr->symbol.flags = BSF_WEAK;
1600 cache_ptr->symbol.section = obj_textsec (abfd);
1601 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1602 cache_ptr->symbol.flags = BSF_WEAK;
1606 cache_ptr->symbol.section = obj_datasec (abfd);
1607 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1608 cache_ptr->symbol.flags = BSF_WEAK;
1612 cache_ptr->symbol.section = obj_bsssec (abfd);
1613 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1614 cache_ptr->symbol.flags = BSF_WEAK;
1621 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1624 translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
1627 struct external_nlist *sym_pointer;
1629 bfd_vma value = cache_ptr->value;
1633 /* Mask out any existing type bits in case copying from one section
1635 sym_pointer->e_type[0] &= ~N_TYPE;
1637 sec = bfd_get_section (cache_ptr);
1642 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1644 (*_bfd_error_handler)
1645 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
1646 bfd_get_filename (abfd),
1647 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1648 bfd_set_error (bfd_error_nonrepresentable_section);
1652 if (sec->output_section != NULL)
1654 off = sec->output_offset;
1655 sec = sec->output_section;
1658 if (bfd_is_abs_section (sec))
1659 sym_pointer->e_type[0] |= N_ABS;
1660 else if (sec == obj_textsec (abfd))
1661 sym_pointer->e_type[0] |= N_TEXT;
1662 else if (sec == obj_datasec (abfd))
1663 sym_pointer->e_type[0] |= N_DATA;
1664 else if (sec == obj_bsssec (abfd))
1665 sym_pointer->e_type[0] |= N_BSS;
1666 else if (bfd_is_und_section (sec))
1667 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1668 else if (bfd_is_ind_section (sec))
1669 sym_pointer->e_type[0] = N_INDR;
1670 else if (bfd_is_com_section (sec))
1671 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1674 (*_bfd_error_handler)
1675 (_("%s: can not represent section `%s' in a.out object file format"),
1676 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1677 bfd_set_error (bfd_error_nonrepresentable_section);
1681 /* Turn the symbol from section relative to absolute again */
1682 value += sec->vma + off;
1684 if ((cache_ptr->flags & BSF_WARNING) != 0)
1685 sym_pointer->e_type[0] = N_WARNING;
1687 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1688 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1689 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1690 sym_pointer->e_type[0] |= N_EXT;
1691 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1692 sym_pointer->e_type[0] &= ~N_EXT;
1694 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1696 int type = ((aout_symbol_type *) cache_ptr)->type;
1699 case N_ABS: type = N_SETA; break;
1700 case N_TEXT: type = N_SETT; break;
1701 case N_DATA: type = N_SETD; break;
1702 case N_BSS: type = N_SETB; break;
1704 sym_pointer->e_type[0] = type;
1707 if ((cache_ptr->flags & BSF_WEAK) != 0)
1711 switch (sym_pointer->e_type[0] & N_TYPE)
1714 case N_ABS: type = N_WEAKA; break;
1715 case N_TEXT: type = N_WEAKT; break;
1716 case N_DATA: type = N_WEAKD; break;
1717 case N_BSS: type = N_WEAKB; break;
1718 case N_UNDF: type = N_WEAKU; break;
1720 sym_pointer->e_type[0] = type;
1723 PUT_WORD(abfd, value, sym_pointer->e_value);
1728 /* Native-level interface to symbols. */
1731 NAME(aout,make_empty_symbol) (abfd)
1734 aout_symbol_type *new =
1735 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
1738 new->symbol.the_bfd = abfd;
1740 return &new->symbol;
1743 /* Translate a set of internal symbols into external symbols. */
1746 NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
1748 aout_symbol_type *in;
1749 struct external_nlist *ext;
1750 bfd_size_type count;
1752 bfd_size_type strsize;
1755 struct external_nlist *ext_end;
1757 ext_end = ext + count;
1758 for (; ext < ext_end; ext++, in++)
1762 x = GET_WORD (abfd, ext->e_strx);
1763 in->symbol.the_bfd = abfd;
1765 /* For the normal symbols, the zero index points at the number
1766 of bytes in the string table but is to be interpreted as the
1767 null string. For the dynamic symbols, the number of bytes in
1768 the string table is stored in the __DYNAMIC structure and the
1769 zero index points at an actual string. */
1770 if (x == 0 && ! dynamic)
1771 in->symbol.name = "";
1772 else if (x < strsize)
1773 in->symbol.name = str + x;
1777 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1778 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1779 in->other = bfd_h_get_8 (abfd, ext->e_other);
1780 in->type = bfd_h_get_8 (abfd, ext->e_type);
1781 in->symbol.udata.p = NULL;
1783 if (! translate_from_native_sym_flags (abfd, in))
1787 in->symbol.flags |= BSF_DYNAMIC;
1793 /* We read the symbols into a buffer, which is discarded when this
1794 function exits. We read the strings into a buffer large enough to
1795 hold them all plus all the cached symbol entries. */
1798 NAME(aout,slurp_symbol_table) (abfd)
1801 struct external_nlist *old_external_syms;
1802 aout_symbol_type *cached;
1805 /* If there's no work to be done, don't do any */
1806 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1809 old_external_syms = obj_aout_external_syms (abfd);
1811 if (! aout_get_external_symbols (abfd))
1814 cached_size = (obj_aout_external_sym_count (abfd)
1815 * sizeof (aout_symbol_type));
1816 cached = (aout_symbol_type *) bfd_malloc (cached_size);
1817 if (cached == NULL && cached_size != 0)
1819 if (cached_size != 0)
1820 memset (cached, 0, cached_size);
1822 /* Convert from external symbol information to internal. */
1823 if (! (NAME(aout,translate_symbol_table)
1825 obj_aout_external_syms (abfd),
1826 obj_aout_external_sym_count (abfd),
1827 obj_aout_external_strings (abfd),
1828 obj_aout_external_string_size (abfd),
1835 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1837 obj_aout_symbols (abfd) = cached;
1839 /* It is very likely that anybody who calls this function will not
1840 want the external symbol information, so if it was allocated
1841 because of our call to aout_get_external_symbols, we free it up
1842 right away to save space. */
1843 if (old_external_syms == (struct external_nlist *) NULL
1844 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1847 bfd_free_window (&obj_aout_sym_window (abfd));
1849 free (obj_aout_external_syms (abfd));
1851 obj_aout_external_syms (abfd) = NULL;
1857 /* We use a hash table when writing out symbols so that we only write
1858 out a particular string once. This helps particularly when the
1859 linker writes out stabs debugging entries, because each different
1860 contributing object file tends to have many duplicate stabs
1863 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1864 if BFD_TRADITIONAL_FORMAT is set. */
1866 static bfd_size_type add_to_stringtab
1867 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1868 static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
1870 /* Get the index of a string in a strtab, adding it if it is not
1873 static INLINE bfd_size_type
1874 add_to_stringtab (abfd, tab, str, copy)
1876 struct bfd_strtab_hash *tab;
1881 bfd_size_type index;
1883 /* An index of 0 always means the empty string. */
1884 if (str == 0 || *str == '\0')
1887 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1888 doesn't understand a hashed string table. */
1890 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1893 index = _bfd_stringtab_add (tab, str, hash, copy);
1895 if (index != (bfd_size_type) -1)
1897 /* Add BYTES_IN_WORD to the return value to account for the
1898 space taken up by the string table size. */
1899 index += BYTES_IN_WORD;
1905 /* Write out a strtab. ABFD is already at the right location in the
1909 emit_stringtab (abfd, tab)
1911 struct bfd_strtab_hash *tab;
1913 bfd_byte buffer[BYTES_IN_WORD];
1915 /* The string table starts with the size. */
1916 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
1917 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1920 return _bfd_stringtab_emit (abfd, tab);
1924 NAME(aout,write_syms) (abfd)
1927 unsigned int count ;
1928 asymbol **generic = bfd_get_outsymbols (abfd);
1929 struct bfd_strtab_hash *strtab;
1931 strtab = _bfd_stringtab_init ();
1935 for (count = 0; count < bfd_get_symcount (abfd); count++)
1937 asymbol *g = generic[count];
1939 struct external_nlist nsp;
1941 indx = add_to_stringtab (abfd, strtab, g->name, false);
1942 if (indx == (bfd_size_type) -1)
1944 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1946 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1948 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1949 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1950 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1954 bfd_h_put_16(abfd,0, nsp.e_desc);
1955 bfd_h_put_8(abfd, 0, nsp.e_other);
1956 bfd_h_put_8(abfd, 0, nsp.e_type);
1959 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1962 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1963 != EXTERNAL_NLIST_SIZE)
1966 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1967 here, at the end. */
1971 if (! emit_stringtab (abfd, strtab))
1974 _bfd_stringtab_free (strtab);
1979 _bfd_stringtab_free (strtab);
1984 NAME(aout,get_symtab) (abfd, location)
1988 unsigned int counter = 0;
1989 aout_symbol_type *symbase;
1991 if (!NAME(aout,slurp_symbol_table) (abfd))
1994 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1995 *(location++) = (asymbol *) ( symbase++);
1997 return bfd_get_symcount (abfd);
2000 /* Standard reloc stuff */
2001 /* Output standard relocation information to a file in target byte order. */
2003 extern void NAME(aout,swap_std_reloc_out)
2004 PARAMS ((bfd *, arelent *, struct reloc_std_external *));
2007 NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
2010 struct reloc_std_external *natptr;
2013 asymbol *sym = *(g->sym_ptr_ptr);
2015 unsigned int r_length;
2017 int r_baserel, r_jmptable, r_relative;
2018 asection *output_section = sym->section->output_section;
2020 PUT_WORD(abfd, g->address, natptr->r_address);
2022 r_length = g->howto->size ; /* Size as a power of two */
2023 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
2024 /* XXX This relies on relocs coming from a.out files. */
2025 r_baserel = (g->howto->type & 8) != 0;
2026 r_jmptable = (g->howto->type & 16) != 0;
2027 r_relative = (g->howto->type & 32) != 0;
2030 /* For a standard reloc, the addend is in the object file. */
2031 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
2034 /* name was clobbered by aout_write_syms to be symbol index */
2036 /* If this relocation is relative to a symbol then set the
2037 r_index to the symbols index, and the r_extern bit.
2039 Absolute symbols can come in in two ways, either as an offset
2040 from the abs section, or as a symbol which has an abs value.
2044 if (bfd_is_com_section (output_section)
2045 || bfd_is_abs_section (output_section)
2046 || bfd_is_und_section (output_section))
2048 if (bfd_abs_section_ptr->symbol == sym)
2050 /* Whoops, looked like an abs symbol, but is really an offset
2051 from the abs section */
2057 /* Fill in symbol */
2059 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2065 /* Just an ordinary section */
2067 r_index = output_section->target_index;
2070 /* now the fun stuff */
2071 if (bfd_header_big_endian (abfd)) {
2072 natptr->r_index[0] = r_index >> 16;
2073 natptr->r_index[1] = r_index >> 8;
2074 natptr->r_index[2] = r_index;
2076 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
2077 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
2078 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
2079 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
2080 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
2081 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
2083 natptr->r_index[2] = r_index >> 16;
2084 natptr->r_index[1] = r_index >> 8;
2085 natptr->r_index[0] = r_index;
2087 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
2088 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
2089 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
2090 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
2091 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
2092 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
2096 /* Extended stuff */
2097 /* Output extended relocation information to a file in target byte order. */
2099 extern void NAME(aout,swap_ext_reloc_out)
2100 PARAMS ((bfd *, arelent *, struct reloc_ext_external *));
2103 NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2106 register struct reloc_ext_external *natptr;
2110 unsigned int r_type;
2111 unsigned int r_addend;
2112 asymbol *sym = *(g->sym_ptr_ptr);
2113 asection *output_section = sym->section->output_section;
2115 PUT_WORD (abfd, g->address, natptr->r_address);
2117 r_type = (unsigned int) g->howto->type;
2119 r_addend = g->addend;
2120 if ((sym->flags & BSF_SECTION_SYM) != 0)
2121 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2123 /* If this relocation is relative to a symbol then set the
2124 r_index to the symbols index, and the r_extern bit.
2126 Absolute symbols can come in in two ways, either as an offset
2127 from the abs section, or as a symbol which has an abs value.
2128 check for that here. */
2130 if (bfd_is_abs_section (bfd_get_section (sym)))
2135 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2137 if (bfd_is_und_section (bfd_get_section (sym))
2138 || (sym->flags & BSF_GLOBAL) != 0)
2142 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2146 /* Just an ordinary section */
2148 r_index = output_section->target_index;
2151 /* now the fun stuff */
2152 if (bfd_header_big_endian (abfd)) {
2153 natptr->r_index[0] = r_index >> 16;
2154 natptr->r_index[1] = r_index >> 8;
2155 natptr->r_index[2] = r_index;
2157 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2158 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2160 natptr->r_index[2] = r_index >> 16;
2161 natptr->r_index[1] = r_index >> 8;
2162 natptr->r_index[0] = r_index;
2164 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2165 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2168 PUT_WORD (abfd, r_addend, natptr->r_addend);
2171 /* BFD deals internally with all things based from the section they're
2172 in. so, something in 10 bytes into a text section with a base of
2173 50 would have a symbol (.text+10) and know .text vma was 50.
2175 Aout keeps all it's symbols based from zero, so the symbol would
2176 contain 60. This macro subs the base of each section from the value
2177 to give the true offset from the section */
2179 #define MOVE_ADDRESS(ad) \
2181 /* undefined symbol */ \
2182 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2183 cache_ptr->addend = ad; \
2185 /* defined, section relative. replace symbol with pointer to \
2186 symbol which points to section */ \
2187 switch (r_index) { \
2189 case N_TEXT | N_EXT: \
2190 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
2191 cache_ptr->addend = ad - su->textsec->vma; \
2194 case N_DATA | N_EXT: \
2195 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
2196 cache_ptr->addend = ad - su->datasec->vma; \
2199 case N_BSS | N_EXT: \
2200 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
2201 cache_ptr->addend = ad - su->bsssec->vma; \
2205 case N_ABS | N_EXT: \
2206 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2207 cache_ptr->addend = ad; \
2213 NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
2215 struct reloc_ext_external *bytes;
2218 bfd_size_type symcount;
2220 unsigned int r_index;
2222 unsigned int r_type;
2223 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2225 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2227 /* now the fun stuff */
2228 if (bfd_header_big_endian (abfd)) {
2229 r_index = (bytes->r_index[0] << 16)
2230 | (bytes->r_index[1] << 8)
2231 | bytes->r_index[2];
2232 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2233 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2234 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2236 r_index = (bytes->r_index[2] << 16)
2237 | (bytes->r_index[1] << 8)
2238 | bytes->r_index[0];
2239 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2240 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2241 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2244 cache_ptr->howto = howto_table_ext + r_type;
2246 /* Base relative relocs are always against the symbol table,
2247 regardless of the setting of r_extern. r_extern just reflects
2248 whether the symbol the reloc is against is local or global. */
2249 if (r_type == RELOC_BASE10
2250 || r_type == RELOC_BASE13
2251 || r_type == RELOC_BASE22)
2254 if (r_extern && r_index > symcount)
2256 /* We could arrange to return an error, but it might be useful
2257 to see the file even if it is bad. */
2262 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
2266 NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
2268 struct reloc_std_external *bytes;
2271 bfd_size_type symcount;
2273 unsigned int r_index;
2275 unsigned int r_length;
2277 int r_baserel, r_jmptable, r_relative;
2278 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2279 unsigned int howto_idx;
2281 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
2283 /* now the fun stuff */
2284 if (bfd_header_big_endian (abfd)) {
2285 r_index = (bytes->r_index[0] << 16)
2286 | (bytes->r_index[1] << 8)
2287 | bytes->r_index[2];
2288 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2289 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2290 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2291 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2292 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2293 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2294 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2296 r_index = (bytes->r_index[2] << 16)
2297 | (bytes->r_index[1] << 8)
2298 | bytes->r_index[0];
2299 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2300 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2301 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2302 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2303 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2304 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2305 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2308 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2309 + 16 * r_jmptable + 32 * r_relative;
2310 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2311 cache_ptr->howto = howto_table_std + howto_idx;
2312 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
2314 /* Base relative relocs are always against the symbol table,
2315 regardless of the setting of r_extern. r_extern just reflects
2316 whether the symbol the reloc is against is local or global. */
2320 if (r_extern && r_index > symcount)
2322 /* We could arrange to return an error, but it might be useful
2323 to see the file even if it is bad. */
2331 /* Read and swap the relocs for a section. */
2334 NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2340 bfd_size_type reloc_size;
2342 arelent *reloc_cache;
2344 unsigned int counter = 0;
2347 if (asect->relocation)
2350 if (asect->flags & SEC_CONSTRUCTOR)
2353 if (asect == obj_datasec (abfd))
2354 reloc_size = exec_hdr(abfd)->a_drsize;
2355 else if (asect == obj_textsec (abfd))
2356 reloc_size = exec_hdr(abfd)->a_trsize;
2357 else if (asect == obj_bsssec (abfd))
2361 bfd_set_error (bfd_error_invalid_operation);
2365 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2368 each_size = obj_reloc_entry_size (abfd);
2370 count = reloc_size / each_size;
2372 reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent)));
2373 if (reloc_cache == NULL && count != 0)
2375 memset (reloc_cache, 0, count * sizeof (arelent));
2377 relocs = bfd_malloc ((size_t) reloc_size);
2378 if (relocs == NULL && reloc_size != 0)
2384 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2391 cache_ptr = reloc_cache;
2392 if (each_size == RELOC_EXT_SIZE)
2394 register struct reloc_ext_external *rptr =
2395 (struct reloc_ext_external *) relocs;
2397 for (; counter < count; counter++, rptr++, cache_ptr++)
2398 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
2399 bfd_get_symcount (abfd));
2403 register struct reloc_std_external *rptr =
2404 (struct reloc_std_external *) relocs;
2406 for (; counter < count; counter++, rptr++, cache_ptr++)
2407 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2408 bfd_get_symcount (abfd));
2413 asect->relocation = reloc_cache;
2414 asect->reloc_count = cache_ptr - reloc_cache;
2419 /* Write out a relocation section into an object file. */
2422 NAME(aout,squirt_out_relocs) (abfd, section)
2427 unsigned char *native, *natptr;
2430 unsigned int count = section->reloc_count;
2433 if (count == 0 || section->orelocation == NULL)
2436 each_size = obj_reloc_entry_size (abfd);
2437 natsize = each_size * count;
2438 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2442 generic = section->orelocation;
2444 if (each_size == RELOC_EXT_SIZE)
2446 for (natptr = native;
2448 --count, natptr += each_size, ++generic)
2449 MY_swap_ext_reloc_out (abfd, *generic,
2450 (struct reloc_ext_external *) natptr);
2454 for (natptr = native;
2456 --count, natptr += each_size, ++generic)
2457 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
2460 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2461 bfd_release(abfd, native);
2464 bfd_release (abfd, native);
2469 /* This is stupid. This function should be a boolean predicate */
2471 NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2477 arelent *tblptr = section->relocation;
2480 if (section == obj_bsssec (abfd))
2486 if (!(tblptr || NAME(aout,slurp_reloc_table) (abfd, section, symbols)))
2489 if (section->flags & SEC_CONSTRUCTOR) {
2490 arelent_chain *chain = section->constructor_chain;
2491 for (count = 0; count < section->reloc_count; count ++) {
2492 *relptr ++ = &chain->relent;
2493 chain = chain->next;
2497 tblptr = section->relocation;
2499 for (count = 0; count++ < section->reloc_count;)
2501 *relptr++ = tblptr++;
2506 return section->reloc_count;
2510 NAME(aout,get_reloc_upper_bound) (abfd, asect)
2514 if (bfd_get_format (abfd) != bfd_object) {
2515 bfd_set_error (bfd_error_invalid_operation);
2518 if (asect->flags & SEC_CONSTRUCTOR) {
2519 return (sizeof (arelent *) * (asect->reloc_count+1));
2522 if (asect == obj_datasec (abfd))
2523 return (sizeof (arelent *)
2524 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2527 if (asect == obj_textsec (abfd))
2528 return (sizeof (arelent *)
2529 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2532 if (asect == obj_bsssec (abfd))
2533 return sizeof (arelent *);
2535 if (asect == obj_bsssec (abfd))
2538 bfd_set_error (bfd_error_invalid_operation);
2543 NAME(aout,get_symtab_upper_bound) (abfd)
2546 if (!NAME(aout,slurp_symbol_table) (abfd))
2549 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2553 NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2554 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2555 asymbol *ignore_symbol ATTRIBUTE_UNUSED;
2557 return (alent *)NULL;
2561 NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2562 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2566 bfd_symbol_info (symbol, ret);
2568 if (ret->type == '?')
2570 int type_code = aout_symbol(symbol)->type & 0xff;
2571 const char *stab_name = bfd_get_stab_name (type_code);
2572 static char buf[10];
2574 if (stab_name == NULL)
2576 sprintf (buf, "(%d)", type_code);
2580 ret->stab_type = type_code;
2581 ret->stab_other = (unsigned) (aout_symbol(symbol)->other & 0xff);
2582 ret->stab_desc = (unsigned) (aout_symbol(symbol)->desc & 0xffff);
2583 ret->stab_name = stab_name;
2588 NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2589 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2592 bfd_print_symbol_type how;
2594 FILE *file = (FILE *)afile;
2597 case bfd_print_symbol_name:
2599 fprintf (file,"%s", symbol->name);
2601 case bfd_print_symbol_more:
2602 fprintf (file,"%4x %2x %2x",(unsigned) (aout_symbol(symbol)->desc & 0xffff),
2603 (unsigned) (aout_symbol(symbol)->other & 0xff),
2604 (unsigned) (aout_symbol(symbol)->type));
2606 case bfd_print_symbol_all:
2608 CONST char *section_name = symbol->section->name;
2610 bfd_print_symbol_vandf((PTR)file,symbol);
2612 fprintf (file," %-5s %04x %02x %02x",
2614 (unsigned) (aout_symbol(symbol)->desc & 0xffff),
2615 (unsigned) (aout_symbol(symbol)->other & 0xff),
2616 (unsigned) (aout_symbol(symbol)->type & 0xff));
2618 fprintf (file," %s", symbol->name);
2624 /* If we don't have to allocate more than 1MB to hold the generic
2625 symbols, we use the generic minisymbol methord: it's faster, since
2626 it only translates the symbols once, not multiple times. */
2627 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2629 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2630 symbols. The minisymbol_to_symbol function translates these into
2631 BFD asymbol structures. */
2634 NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2638 unsigned int *sizep;
2642 /* We could handle the dynamic symbols here as well, but it's
2643 easier to hand them off. */
2644 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2647 if (! aout_get_external_symbols (abfd))
2650 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2651 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2653 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2655 /* By passing the external symbols back from this routine, we are
2656 giving up control over the memory block. Clear
2657 obj_aout_external_syms, so that we do not try to free it
2659 obj_aout_external_syms (abfd) = NULL;
2661 *sizep = EXTERNAL_NLIST_SIZE;
2662 return obj_aout_external_sym_count (abfd);
2665 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2666 unmodified a.out symbol. The SYM argument is a structure returned
2667 by bfd_make_empty_symbol, which we fill in here. */
2670 NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2677 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2678 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2680 memset (sym, 0, sizeof (aout_symbol_type));
2682 /* We call translate_symbol_table to translate a single symbol. */
2683 if (! (NAME(aout,translate_symbol_table)
2685 (aout_symbol_type *) sym,
2686 (struct external_nlist *) minisym,
2688 obj_aout_external_strings (abfd),
2689 obj_aout_external_string_size (abfd),
2697 provided a BFD, a section and an offset into the section, calculate
2698 and return the name of the source file and the line nearest to the
2703 NAME(aout,find_nearest_line)
2704 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2709 CONST char **filename_ptr;
2710 CONST char **functionname_ptr;
2711 unsigned int *line_ptr;
2713 /* Run down the file looking for the filename, function and linenumber */
2715 CONST char *directory_name = NULL;
2716 CONST char *main_file_name = NULL;
2717 CONST char *current_file_name = NULL;
2718 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
2719 CONST char *line_directory_name = NULL; /* Value of directory_name at line number. */
2720 bfd_vma low_line_vma = 0;
2721 bfd_vma low_func_vma = 0;
2723 size_t filelen, funclen;
2726 *filename_ptr = abfd->filename;
2727 *functionname_ptr = 0;
2729 if (symbols != (asymbol **)NULL) {
2730 for (p = symbols; *p; p++) {
2731 aout_symbol_type *q = (aout_symbol_type *) (*p);
2735 /* If this looks like a file name symbol, and it comes after
2736 the line number we have found so far, but before the
2737 offset, then we have probably not found the right line
2739 if (q->symbol.value <= offset
2740 && ((q->symbol.value > low_line_vma
2741 && (line_file_name != NULL
2743 || (q->symbol.value > low_func_vma
2746 const char *symname;
2748 symname = q->symbol.name;
2749 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2751 if (q->symbol.value > low_line_vma)
2754 line_file_name = NULL;
2756 if (q->symbol.value > low_func_vma)
2763 /* If this symbol is less than the offset, but greater than
2764 the line number we have found so far, then we have not
2765 found the right line number. */
2766 if (q->symbol.value <= offset)
2768 if (q->symbol.value > low_line_vma)
2771 line_file_name = NULL;
2773 if (q->symbol.value > low_func_vma)
2777 main_file_name = current_file_name = q->symbol.name;
2778 /* Look ahead to next symbol to check if that too is an N_SO. */
2782 q = (aout_symbol_type *) (*p);
2783 if (q->type != (int)N_SO)
2786 /* Found a second N_SO First is directory; second is filename. */
2787 directory_name = current_file_name;
2788 main_file_name = current_file_name = q->symbol.name;
2789 if (obj_textsec(abfd) != section)
2793 current_file_name = q->symbol.name;
2800 /* We'll keep this if it resolves nearer than the one we have
2802 if (q->symbol.value >= low_line_vma
2803 && q->symbol.value <= offset)
2805 *line_ptr = q->desc;
2806 low_line_vma = q->symbol.value;
2807 line_file_name = current_file_name;
2808 line_directory_name = directory_name;
2813 /* We'll keep this if it is nearer than the one we have already */
2814 if (q->symbol.value >= low_func_vma &&
2815 q->symbol.value <= offset) {
2816 low_func_vma = q->symbol.value;
2817 func = (asymbol *)q;
2819 else if (q->symbol.value > offset)
2830 main_file_name = line_file_name;
2831 directory_name = line_directory_name;
2834 if (main_file_name == NULL
2835 || IS_ABSOLUTE_PATH (main_file_name)
2836 || directory_name == NULL)
2839 filelen = strlen (directory_name) + strlen (main_file_name);
2843 funclen = strlen (bfd_asymbol_name (func));
2845 if (adata (abfd).line_buf != NULL)
2846 free (adata (abfd).line_buf);
2847 if (filelen + funclen == 0)
2848 adata (abfd).line_buf = buf = NULL;
2851 buf = (char *) bfd_malloc (filelen + funclen + 3);
2852 adata (abfd).line_buf = buf;
2857 if (main_file_name != NULL)
2859 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
2860 *filename_ptr = main_file_name;
2863 sprintf (buf, "%s%s", directory_name, main_file_name);
2864 *filename_ptr = buf;
2871 const char *function = func->name;
2874 /* The caller expects a symbol name. We actually have a
2875 function name, without the leading underscore. Put the
2876 underscore back in, so that the caller gets a symbol name. */
2877 if (bfd_get_symbol_leading_char (abfd) == '\0')
2878 strcpy (buf, function);
2881 buf[0] = bfd_get_symbol_leading_char (abfd);
2882 strcpy (buf + 1, function);
2884 /* Have to remove : stuff */
2885 p = strchr (buf, ':');
2888 *functionname_ptr = buf;
2895 NAME(aout,sizeof_headers) (abfd, execable)
2897 boolean execable ATTRIBUTE_UNUSED;
2899 return adata(abfd).exec_bytes_size;
2902 /* Free all information we have cached for this BFD. We can always
2903 read it again later if we need it. */
2906 NAME(aout,bfd_free_cached_info) (abfd)
2911 if (bfd_get_format (abfd) != bfd_object
2912 || abfd->tdata.aout_data == NULL)
2915 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2916 BFCI_FREE (obj_aout_symbols (abfd));
2918 obj_aout_external_syms (abfd) = 0;
2919 bfd_free_window (&obj_aout_sym_window (abfd));
2920 bfd_free_window (&obj_aout_string_window (abfd));
2921 obj_aout_external_strings (abfd) = 0;
2923 BFCI_FREE (obj_aout_external_syms (abfd));
2924 BFCI_FREE (obj_aout_external_strings (abfd));
2926 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
2927 BFCI_FREE (o->relocation);
2933 /* a.out link code. */
2935 static boolean aout_link_add_object_symbols
2936 PARAMS ((bfd *, struct bfd_link_info *));
2937 static boolean aout_link_check_archive_element
2938 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
2939 static boolean aout_link_free_symbols PARAMS ((bfd *));
2940 static boolean aout_link_check_ar_symbols
2941 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2942 static boolean aout_link_add_symbols
2943 PARAMS ((bfd *, struct bfd_link_info *));
2945 /* Routine to create an entry in an a.out link hash table. */
2947 struct bfd_hash_entry *
2948 NAME(aout,link_hash_newfunc) (entry, table, string)
2949 struct bfd_hash_entry *entry;
2950 struct bfd_hash_table *table;
2953 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2955 /* Allocate the structure if it has not already been allocated by a
2957 if (ret == (struct aout_link_hash_entry *) NULL)
2958 ret = ((struct aout_link_hash_entry *)
2959 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
2960 if (ret == (struct aout_link_hash_entry *) NULL)
2961 return (struct bfd_hash_entry *) ret;
2963 /* Call the allocation method of the superclass. */
2964 ret = ((struct aout_link_hash_entry *)
2965 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2969 /* Set local fields. */
2970 ret->written = false;
2974 return (struct bfd_hash_entry *) ret;
2977 /* Initialize an a.out link hash table. */
2980 NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2981 struct aout_link_hash_table *table;
2983 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2984 struct bfd_hash_table *,
2987 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2990 /* Create an a.out link hash table. */
2992 struct bfd_link_hash_table *
2993 NAME(aout,link_hash_table_create) (abfd)
2996 struct aout_link_hash_table *ret;
2998 ret = ((struct aout_link_hash_table *)
2999 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
3001 return (struct bfd_link_hash_table *) NULL;
3002 if (! NAME(aout,link_hash_table_init) (ret, abfd,
3003 NAME(aout,link_hash_newfunc)))
3006 return (struct bfd_link_hash_table *) NULL;
3011 /* Given an a.out BFD, add symbols to the global hash table as
3015 NAME(aout,link_add_symbols) (abfd, info)
3017 struct bfd_link_info *info;
3019 switch (bfd_get_format (abfd))
3022 return aout_link_add_object_symbols (abfd, info);
3024 return _bfd_generic_link_add_archive_symbols
3025 (abfd, info, aout_link_check_archive_element);
3027 bfd_set_error (bfd_error_wrong_format);
3032 /* Add symbols from an a.out object file. */
3035 aout_link_add_object_symbols (abfd, info)
3037 struct bfd_link_info *info;
3039 if (! aout_get_external_symbols (abfd))
3041 if (! aout_link_add_symbols (abfd, info))
3043 if (! info->keep_memory)
3045 if (! aout_link_free_symbols (abfd))
3051 /* Check a single archive element to see if we need to include it in
3052 the link. *PNEEDED is set according to whether this element is
3053 needed in the link or not. This is called from
3054 _bfd_generic_link_add_archive_symbols. */
3057 aout_link_check_archive_element (abfd, info, pneeded)
3059 struct bfd_link_info *info;
3062 if (! aout_get_external_symbols (abfd))
3065 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
3070 if (! aout_link_add_symbols (abfd, info))
3074 if (! info->keep_memory || ! *pneeded)
3076 if (! aout_link_free_symbols (abfd))
3083 /* Free up the internal symbols read from an a.out file. */
3086 aout_link_free_symbols (abfd)
3089 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
3092 bfd_free_window (&obj_aout_sym_window (abfd));
3094 free ((PTR) obj_aout_external_syms (abfd));
3096 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
3098 if (obj_aout_external_strings (abfd) != (char *) NULL)
3101 bfd_free_window (&obj_aout_string_window (abfd));
3103 free ((PTR) obj_aout_external_strings (abfd));
3105 obj_aout_external_strings (abfd) = (char *) NULL;
3110 /* Look through the internal symbols to see if this object file should
3111 be included in the link. We should include this object file if it
3112 defines any symbols which are currently undefined. If this object
3113 file defines a common symbol, then we may adjust the size of the
3114 known symbol but we do not include the object file in the link
3115 (unless there is some other reason to include it). */
3118 aout_link_check_ar_symbols (abfd, info, pneeded)
3120 struct bfd_link_info *info;
3123 register struct external_nlist *p;
3124 struct external_nlist *pend;
3129 /* Look through all the symbols. */
3130 p = obj_aout_external_syms (abfd);
3131 pend = p + obj_aout_external_sym_count (abfd);
3132 strings = obj_aout_external_strings (abfd);
3133 for (; p < pend; p++)
3135 int type = bfd_h_get_8 (abfd, p->e_type);
3137 struct bfd_link_hash_entry *h;
3139 /* Ignore symbols that are not externally visible. This is an
3140 optimization only, as we check the type more thoroughly
3142 if (((type & N_EXT) == 0
3143 || (type & N_STAB) != 0
3150 if (type == N_WARNING
3156 name = strings + GET_WORD (abfd, p->e_strx);
3157 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3159 /* We are only interested in symbols that are currently
3160 undefined or common. */
3161 if (h == (struct bfd_link_hash_entry *) NULL
3162 || (h->type != bfd_link_hash_undefined
3163 && h->type != bfd_link_hash_common))
3165 if (type == (N_INDR | N_EXT))
3170 if (type == (N_TEXT | N_EXT)
3171 || type == (N_DATA | N_EXT)
3172 || type == (N_BSS | N_EXT)
3173 || type == (N_ABS | N_EXT)
3174 || type == (N_INDR | N_EXT))
3176 /* This object file defines this symbol. We must link it
3177 in. This is true regardless of whether the current
3178 definition of the symbol is undefined or common. If the
3179 current definition is common, we have a case in which we
3180 have already seen an object file including
3182 and this object file from the archive includes
3184 In such a case we must include this object file.
3186 FIXME: The SunOS 4.1.3 linker will pull in the archive
3187 element if the symbol is defined in the .data section,
3188 but not if it is defined in the .text section. That
3189 seems a bit crazy to me, and I haven't implemented it.
3190 However, it might be correct. */
3191 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3197 if (type == (N_UNDF | N_EXT))
3201 value = GET_WORD (abfd, p->e_value);
3204 /* This symbol is common in the object from the archive
3206 if (h->type == bfd_link_hash_undefined)
3211 symbfd = h->u.undef.abfd;
3212 if (symbfd == (bfd *) NULL)
3214 /* This symbol was created as undefined from
3215 outside BFD. We assume that we should link
3216 in the object file. This is done for the -u
3217 option in the linker. */
3218 if (! (*info->callbacks->add_archive_element) (info,
3225 /* Turn the current link symbol into a common
3226 symbol. It is already on the undefs list. */
3227 h->type = bfd_link_hash_common;
3228 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3229 bfd_hash_allocate (&info->hash->table,
3230 sizeof (struct bfd_link_hash_common_entry)));
3231 if (h->u.c.p == NULL)
3234 h->u.c.size = value;
3236 /* FIXME: This isn't quite right. The maximum
3237 alignment of a common symbol should be set by the
3238 architecture of the output file, not of the input
3240 power = bfd_log2 (value);
3241 if (power > bfd_get_arch_info (abfd)->section_align_power)
3242 power = bfd_get_arch_info (abfd)->section_align_power;
3243 h->u.c.p->alignment_power = power;
3245 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3250 /* Adjust the size of the common symbol if
3252 if (value > h->u.c.size)
3253 h->u.c.size = value;
3263 /* This symbol is weak but defined. We must pull it in if
3264 the current link symbol is undefined, but we don't want
3265 it if the current link symbol is common. */
3266 if (h->type == bfd_link_hash_undefined)
3268 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3276 /* We do not need this object file. */
3280 /* Add all symbols from an object file to the hash table. */
3283 aout_link_add_symbols (abfd, info)
3285 struct bfd_link_info *info;
3287 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3288 const char *, flagword, asection *,
3289 bfd_vma, const char *, boolean,
3291 struct bfd_link_hash_entry **));
3292 struct external_nlist *syms;
3293 bfd_size_type sym_count;
3296 struct aout_link_hash_entry **sym_hash;
3297 register struct external_nlist *p;
3298 struct external_nlist *pend;
3300 syms = obj_aout_external_syms (abfd);
3301 sym_count = obj_aout_external_sym_count (abfd);
3302 strings = obj_aout_external_strings (abfd);
3303 if (info->keep_memory)
3308 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3310 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3311 (abfd, info, &syms, &sym_count, &strings)))
3315 /* We keep a list of the linker hash table entries that correspond
3316 to particular symbols. We could just look them up in the hash
3317 table, but keeping the list is more efficient. Perhaps this
3318 should be conditional on info->keep_memory. */
3319 sym_hash = ((struct aout_link_hash_entry **)
3322 * sizeof (struct aout_link_hash_entry *))));
3323 if (sym_hash == NULL && sym_count != 0)
3325 obj_aout_sym_hashes (abfd) = sym_hash;
3327 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3328 if (add_one_symbol == NULL)
3329 add_one_symbol = _bfd_generic_link_add_one_symbol;
3332 pend = p + sym_count;
3333 for (; p < pend; p++, sym_hash++)
3344 type = bfd_h_get_8 (abfd, p->e_type);
3346 /* Ignore debugging symbols. */
3347 if ((type & N_STAB) != 0)
3350 name = strings + GET_WORD (abfd, p->e_strx);
3351 value = GET_WORD (abfd, p->e_value);
3368 /* Ignore symbols that are not externally visible. */
3371 /* Ignore local indirect symbol. */
3376 case N_UNDF | N_EXT:
3379 section = bfd_und_section_ptr;
3383 section = bfd_com_section_ptr;
3386 section = bfd_abs_section_ptr;
3388 case N_TEXT | N_EXT:
3389 section = obj_textsec (abfd);
3390 value -= bfd_get_section_vma (abfd, section);
3392 case N_DATA | N_EXT:
3393 case N_SETV | N_EXT:
3394 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3395 translate_from_native_sym_flags. */
3396 section = obj_datasec (abfd);
3397 value -= bfd_get_section_vma (abfd, section);
3400 section = obj_bsssec (abfd);
3401 value -= bfd_get_section_vma (abfd, section);
3403 case N_INDR | N_EXT:
3404 /* An indirect symbol. The next symbol is the symbol
3405 which this one really is. */
3406 BFD_ASSERT (p + 1 < pend);
3408 string = strings + GET_WORD (abfd, p->e_strx);
3409 section = bfd_ind_section_ptr;
3410 flags |= BSF_INDIRECT;
3412 case N_COMM | N_EXT:
3413 section = bfd_com_section_ptr;
3415 case N_SETA: case N_SETA | N_EXT:
3416 section = bfd_abs_section_ptr;
3417 flags |= BSF_CONSTRUCTOR;
3419 case N_SETT: case N_SETT | N_EXT:
3420 section = obj_textsec (abfd);
3421 flags |= BSF_CONSTRUCTOR;
3422 value -= bfd_get_section_vma (abfd, section);
3424 case N_SETD: case N_SETD | N_EXT:
3425 section = obj_datasec (abfd);
3426 flags |= BSF_CONSTRUCTOR;
3427 value -= bfd_get_section_vma (abfd, section);
3429 case N_SETB: case N_SETB | N_EXT:
3430 section = obj_bsssec (abfd);
3431 flags |= BSF_CONSTRUCTOR;
3432 value -= bfd_get_section_vma (abfd, section);
3435 /* A warning symbol. The next symbol is the one to warn
3437 BFD_ASSERT (p + 1 < pend);
3440 name = strings + GET_WORD (abfd, p->e_strx);
3441 section = bfd_und_section_ptr;
3442 flags |= BSF_WARNING;
3445 section = bfd_und_section_ptr;
3449 section = bfd_abs_section_ptr;
3453 section = obj_textsec (abfd);
3454 value -= bfd_get_section_vma (abfd, section);
3458 section = obj_datasec (abfd);
3459 value -= bfd_get_section_vma (abfd, section);
3463 section = obj_bsssec (abfd);
3464 value -= bfd_get_section_vma (abfd, section);
3469 if (! ((*add_one_symbol)
3470 (info, abfd, name, flags, section, value, string, copy, false,
3471 (struct bfd_link_hash_entry **) sym_hash)))
3474 /* Restrict the maximum alignment of a common symbol based on
3475 the architecture, since a.out has no way to represent
3476 alignment requirements of a section in a .o file. FIXME:
3477 This isn't quite right: it should use the architecture of the
3478 output file, not the input files. */
3479 if ((*sym_hash)->root.type == bfd_link_hash_common
3480 && ((*sym_hash)->root.u.c.p->alignment_power >
3481 bfd_get_arch_info (abfd)->section_align_power))
3482 (*sym_hash)->root.u.c.p->alignment_power =
3483 bfd_get_arch_info (abfd)->section_align_power;
3485 /* If this is a set symbol, and we are not building sets, then
3486 it is possible for the hash entry to not have been set. In
3487 such a case, treat the symbol as not globally defined. */
3488 if ((*sym_hash)->root.type == bfd_link_hash_new)
3490 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3494 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3501 /* A hash table used for header files with N_BINCL entries. */
3503 struct aout_link_includes_table
3505 struct bfd_hash_table root;
3508 /* A linked list of totals that we have found for a particular header
3511 struct aout_link_includes_totals
3513 struct aout_link_includes_totals *next;
3517 /* An entry in the header file hash table. */
3519 struct aout_link_includes_entry
3521 struct bfd_hash_entry root;
3522 /* List of totals we have found for this file. */
3523 struct aout_link_includes_totals *totals;
3526 /* Look up an entry in an the header file hash table. */
3528 #define aout_link_includes_lookup(table, string, create, copy) \
3529 ((struct aout_link_includes_entry *) \
3530 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3532 /* During the final link step we need to pass around a bunch of
3533 information, so we do it in an instance of this structure. */
3535 struct aout_final_link_info
3537 /* General link information. */
3538 struct bfd_link_info *info;
3541 /* Reloc file positions. */
3542 file_ptr treloff, dreloff;
3543 /* File position of symbols. */
3546 struct bfd_strtab_hash *strtab;
3547 /* Header file hash table. */
3548 struct aout_link_includes_table includes;
3549 /* A buffer large enough to hold the contents of any section. */
3551 /* A buffer large enough to hold the relocs of any section. */
3553 /* A buffer large enough to hold the symbol map of any input BFD. */
3555 /* A buffer large enough to hold output symbols of any input BFD. */
3556 struct external_nlist *output_syms;
3559 static struct bfd_hash_entry *aout_link_includes_newfunc
3560 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
3561 static boolean aout_link_input_bfd
3562 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3563 static boolean aout_link_write_symbols
3564 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3565 static boolean aout_link_write_other_symbol
3566 PARAMS ((struct aout_link_hash_entry *, PTR));
3567 static boolean aout_link_input_section
3568 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3569 asection *input_section, file_ptr *reloff_ptr,
3570 bfd_size_type rel_size));
3571 static boolean aout_link_input_section_std
3572 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3573 asection *input_section, struct reloc_std_external *,
3574 bfd_size_type rel_size, bfd_byte *contents));
3575 static boolean aout_link_input_section_ext
3576 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3577 asection *input_section, struct reloc_ext_external *,
3578 bfd_size_type rel_size, bfd_byte *contents));
3579 static INLINE asection *aout_reloc_index_to_section
3580 PARAMS ((bfd *, int));
3581 static boolean aout_link_reloc_link_order
3582 PARAMS ((struct aout_final_link_info *, asection *,
3583 struct bfd_link_order *));
3585 /* The function to create a new entry in the header file hash table. */
3587 static struct bfd_hash_entry *
3588 aout_link_includes_newfunc (entry, table, string)
3589 struct bfd_hash_entry *entry;
3590 struct bfd_hash_table *table;
3593 struct aout_link_includes_entry *ret =
3594 (struct aout_link_includes_entry *) entry;
3596 /* Allocate the structure if it has not already been allocated by a
3598 if (ret == (struct aout_link_includes_entry *) NULL)
3599 ret = ((struct aout_link_includes_entry *)
3600 bfd_hash_allocate (table,
3601 sizeof (struct aout_link_includes_entry)));
3602 if (ret == (struct aout_link_includes_entry *) NULL)
3603 return (struct bfd_hash_entry *) ret;
3605 /* Call the allocation method of the superclass. */
3606 ret = ((struct aout_link_includes_entry *)
3607 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3610 /* Set local fields. */
3614 return (struct bfd_hash_entry *) ret;
3617 /* Do the final link step. This is called on the output BFD. The
3618 INFO structure should point to a list of BFDs linked through the
3619 link_next field which can be used to find each BFD which takes part
3620 in the output. Also, each section in ABFD should point to a list
3621 of bfd_link_order structures which list all the input sections for
3622 the output section. */
3625 NAME(aout,final_link) (abfd, info, callback)
3627 struct bfd_link_info *info;
3628 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3630 struct aout_final_link_info aout_info;
3631 boolean includes_hash_initialized = false;
3633 bfd_size_type trsize, drsize;
3634 size_t max_contents_size;
3635 size_t max_relocs_size;
3636 size_t max_sym_count;
3637 bfd_size_type text_size;
3639 register struct bfd_link_order *p;
3641 boolean have_link_order_relocs;
3644 abfd->flags |= DYNAMIC;
3646 aout_info.info = info;
3647 aout_info.output_bfd = abfd;
3648 aout_info.contents = NULL;
3649 aout_info.relocs = NULL;
3650 aout_info.symbol_map = NULL;
3651 aout_info.output_syms = NULL;
3653 if (! bfd_hash_table_init_n (&aout_info.includes.root,
3654 aout_link_includes_newfunc,
3657 includes_hash_initialized = true;
3659 /* Figure out the largest section size. Also, if generating
3660 relocateable output, count the relocs. */
3663 max_contents_size = 0;
3664 max_relocs_size = 0;
3666 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
3670 if (info->relocateable)
3672 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3674 trsize += exec_hdr (sub)->a_trsize;
3675 drsize += exec_hdr (sub)->a_drsize;
3679 /* FIXME: We need to identify the .text and .data sections
3680 and call get_reloc_upper_bound and canonicalize_reloc to
3681 work out the number of relocs needed, and then multiply
3682 by the reloc size. */
3683 (*_bfd_error_handler)
3684 (_("%s: relocateable link from %s to %s not supported"),
3685 bfd_get_filename (abfd),
3686 sub->xvec->name, abfd->xvec->name);
3687 bfd_set_error (bfd_error_invalid_operation);
3692 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3694 sz = bfd_section_size (sub, obj_textsec (sub));
3695 if (sz > max_contents_size)
3696 max_contents_size = sz;
3697 sz = bfd_section_size (sub, obj_datasec (sub));
3698 if (sz > max_contents_size)
3699 max_contents_size = sz;
3701 sz = exec_hdr (sub)->a_trsize;
3702 if (sz > max_relocs_size)
3703 max_relocs_size = sz;
3704 sz = exec_hdr (sub)->a_drsize;
3705 if (sz > max_relocs_size)
3706 max_relocs_size = sz;
3708 sz = obj_aout_external_sym_count (sub);
3709 if (sz > max_sym_count)
3714 if (info->relocateable)
3716 if (obj_textsec (abfd) != (asection *) NULL)
3717 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3719 * obj_reloc_entry_size (abfd));
3720 if (obj_datasec (abfd) != (asection *) NULL)
3721 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3723 * obj_reloc_entry_size (abfd));
3726 exec_hdr (abfd)->a_trsize = trsize;
3727 exec_hdr (abfd)->a_drsize = drsize;
3729 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3731 /* Adjust the section sizes and vmas according to the magic number.
3732 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3733 filepos for each section. */
3734 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
3737 /* The relocation and symbol file positions differ among a.out
3738 targets. We are passed a callback routine from the backend
3739 specific code to handle this.
3740 FIXME: At this point we do not know how much space the symbol
3741 table will require. This will not work for any (nonstandard)
3742 a.out target that needs to know the symbol table size before it
3743 can compute the relocation file positions. This may or may not
3744 be the case for the hp300hpux target, for example. */
3745 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3747 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3748 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3749 obj_sym_filepos (abfd) = aout_info.symoff;
3751 /* We keep a count of the symbols as we output them. */
3752 obj_aout_external_sym_count (abfd) = 0;
3754 /* We accumulate the string table as we write out the symbols. */
3755 aout_info.strtab = _bfd_stringtab_init ();
3756 if (aout_info.strtab == NULL)
3759 /* Allocate buffers to hold section contents and relocs. */
3760 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
3761 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size);
3762 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *));
3763 aout_info.output_syms = ((struct external_nlist *)
3764 bfd_malloc ((max_sym_count + 1)
3765 * sizeof (struct external_nlist)));
3766 if ((aout_info.contents == NULL && max_contents_size != 0)
3767 || (aout_info.relocs == NULL && max_relocs_size != 0)
3768 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3769 || aout_info.output_syms == NULL)
3772 /* If we have a symbol named __DYNAMIC, force it out now. This is
3773 required by SunOS. Doing this here rather than in sunos.c is a
3774 hack, but it's easier than exporting everything which would be
3777 struct aout_link_hash_entry *h;
3779 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3780 false, false, false);
3782 aout_link_write_other_symbol (h, &aout_info);
3785 /* The most time efficient way to do the link would be to read all
3786 the input object files into memory and then sort out the
3787 information into the output file. Unfortunately, that will
3788 probably use too much memory. Another method would be to step
3789 through everything that composes the text section and write it
3790 out, and then everything that composes the data section and write
3791 it out, and then write out the relocs, and then write out the
3792 symbols. Unfortunately, that requires reading stuff from each
3793 input file several times, and we will not be able to keep all the
3794 input files open simultaneously, and reopening them will be slow.
3796 What we do is basically process one input file at a time. We do
3797 everything we need to do with an input file once--copy over the
3798 section contents, handle the relocation information, and write
3799 out the symbols--and then we throw away the information we read
3800 from it. This approach requires a lot of lseeks of the output
3801 file, which is unfortunate but still faster than reopening a lot
3804 We use the output_has_begun field of the input BFDs to see
3805 whether we have already handled it. */
3806 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3807 sub->output_has_begun = false;
3809 /* Mark all sections which are to be included in the link. This
3810 will normally be every section. We need to do this so that we
3811 can identify any sections which the linker has decided to not
3813 for (o = abfd->sections; o != NULL; o = o->next)
3815 for (p = o->link_order_head; p != NULL; p = p->next)
3817 if (p->type == bfd_indirect_link_order)
3818 p->u.indirect.section->linker_mark = true;
3822 have_link_order_relocs = false;
3823 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3825 for (p = o->link_order_head;
3826 p != (struct bfd_link_order *) NULL;
3829 if (p->type == bfd_indirect_link_order
3830 && (bfd_get_flavour (p->u.indirect.section->owner)
3831 == bfd_target_aout_flavour))
3835 input_bfd = p->u.indirect.section->owner;
3836 if (! input_bfd->output_has_begun)
3838 if (! aout_link_input_bfd (&aout_info, input_bfd))
3840 input_bfd->output_has_begun = true;
3843 else if (p->type == bfd_section_reloc_link_order
3844 || p->type == bfd_symbol_reloc_link_order)
3846 /* These are handled below. */
3847 have_link_order_relocs = true;
3851 if (! _bfd_default_link_order (abfd, info, o, p))
3857 /* Write out any symbols that we have not already written out. */
3858 aout_link_hash_traverse (aout_hash_table (info),
3859 aout_link_write_other_symbol,
3862 /* Now handle any relocs we were asked to create by the linker.
3863 These did not come from any input file. We must do these after
3864 we have written out all the symbols, so that we know the symbol
3866 if (have_link_order_relocs)
3868 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3870 for (p = o->link_order_head;
3871 p != (struct bfd_link_order *) NULL;
3874 if (p->type == bfd_section_reloc_link_order
3875 || p->type == bfd_symbol_reloc_link_order)
3877 if (! aout_link_reloc_link_order (&aout_info, o, p))
3884 if (aout_info.contents != NULL)
3886 free (aout_info.contents);
3887 aout_info.contents = NULL;
3889 if (aout_info.relocs != NULL)
3891 free (aout_info.relocs);
3892 aout_info.relocs = NULL;
3894 if (aout_info.symbol_map != NULL)
3896 free (aout_info.symbol_map);
3897 aout_info.symbol_map = NULL;
3899 if (aout_info.output_syms != NULL)
3901 free (aout_info.output_syms);
3902 aout_info.output_syms = NULL;
3904 if (includes_hash_initialized)
3906 bfd_hash_table_free (&aout_info.includes.root);
3907 includes_hash_initialized = false;
3910 /* Finish up any dynamic linking we may be doing. */
3911 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3913 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
3917 /* Update the header information. */
3918 abfd->symcount = obj_aout_external_sym_count (abfd);
3919 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3920 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3921 obj_textsec (abfd)->reloc_count =
3922 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3923 obj_datasec (abfd)->reloc_count =
3924 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3926 /* Write out the string table, unless there are no symbols. */
3927 if (abfd->symcount > 0)
3929 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
3930 || ! emit_stringtab (abfd, aout_info.strtab))
3933 else if (obj_textsec (abfd)->reloc_count == 0
3934 && obj_datasec (abfd)->reloc_count == 0)
3940 (obj_datasec (abfd)->filepos
3941 + exec_hdr (abfd)->a_data
3944 || bfd_write (&b, 1, 1, abfd) != 1)
3951 if (aout_info.contents != NULL)
3952 free (aout_info.contents);
3953 if (aout_info.relocs != NULL)
3954 free (aout_info.relocs);
3955 if (aout_info.symbol_map != NULL)
3956 free (aout_info.symbol_map);
3957 if (aout_info.output_syms != NULL)
3958 free (aout_info.output_syms);
3959 if (includes_hash_initialized)
3960 bfd_hash_table_free (&aout_info.includes.root);
3964 /* Link an a.out input BFD into the output file. */
3967 aout_link_input_bfd (finfo, input_bfd)
3968 struct aout_final_link_info *finfo;
3971 bfd_size_type sym_count;
3973 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3975 /* If this is a dynamic object, it may need special handling. */
3976 if ((input_bfd->flags & DYNAMIC) != 0
3977 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3979 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3980 (finfo->info, input_bfd));
3983 /* Get the symbols. We probably have them already, unless
3984 finfo->info->keep_memory is false. */
3985 if (! aout_get_external_symbols (input_bfd))
3988 sym_count = obj_aout_external_sym_count (input_bfd);
3990 /* Write out the symbols and get a map of the new indices. The map
3991 is placed into finfo->symbol_map. */
3992 if (! aout_link_write_symbols (finfo, input_bfd))
3995 /* Relocate and write out the sections. These functions use the
3996 symbol map created by aout_link_write_symbols. The linker_mark
3997 field will be set if these sections are to be included in the
3998 link, which will normally be the case. */
3999 if (obj_textsec (input_bfd)->linker_mark)
4001 if (! aout_link_input_section (finfo, input_bfd,
4002 obj_textsec (input_bfd),
4004 exec_hdr (input_bfd)->a_trsize))
4007 if (obj_datasec (input_bfd)->linker_mark)
4009 if (! aout_link_input_section (finfo, input_bfd,
4010 obj_datasec (input_bfd),
4012 exec_hdr (input_bfd)->a_drsize))
4016 /* If we are not keeping memory, we don't need the symbols any
4017 longer. We still need them if we are keeping memory, because the
4018 strings in the hash table point into them. */
4019 if (! finfo->info->keep_memory)
4021 if (! aout_link_free_symbols (input_bfd))
4028 /* Adjust and write out the symbols for an a.out file. Set the new
4029 symbol indices into a symbol_map. */
4032 aout_link_write_symbols (finfo, input_bfd)
4033 struct aout_final_link_info *finfo;
4037 bfd_size_type sym_count;
4039 enum bfd_link_strip strip;
4040 enum bfd_link_discard discard;
4041 struct external_nlist *outsym;
4042 bfd_size_type strtab_index;
4043 register struct external_nlist *sym;
4044 struct external_nlist *sym_end;
4045 struct aout_link_hash_entry **sym_hash;
4050 output_bfd = finfo->output_bfd;
4051 sym_count = obj_aout_external_sym_count (input_bfd);
4052 strings = obj_aout_external_strings (input_bfd);
4053 strip = finfo->info->strip;
4054 discard = finfo->info->discard;
4055 outsym = finfo->output_syms;
4057 /* First write out a symbol for this object file, unless we are
4058 discarding such symbols. */
4059 if (strip != strip_all
4060 && (strip != strip_some
4061 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
4062 false, false) != NULL)
4063 && discard != discard_all)
4065 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
4066 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
4067 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
4068 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4069 input_bfd->filename, false);
4070 if (strtab_index == (bfd_size_type) -1)
4072 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4073 PUT_WORD (output_bfd,
4074 (bfd_get_section_vma (output_bfd,
4075 obj_textsec (input_bfd)->output_section)
4076 + obj_textsec (input_bfd)->output_offset),
4078 ++obj_aout_external_sym_count (output_bfd);
4084 sym = obj_aout_external_syms (input_bfd);
4085 sym_end = sym + sym_count;
4086 sym_hash = obj_aout_sym_hashes (input_bfd);
4087 symbol_map = finfo->symbol_map;
4088 memset (symbol_map, 0, sym_count * sizeof *symbol_map);
4089 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
4093 struct aout_link_hash_entry *h;
4099 /* We set *symbol_map to 0 above for all symbols. If it has
4100 already been set to -1 for this symbol, it means that we are
4101 discarding it because it appears in a duplicate header file.
4102 See the N_BINCL code below. */
4103 if (*symbol_map == -1)
4106 /* Initialize *symbol_map to -1, which means that the symbol was
4107 not copied into the output file. We will change it later if
4108 we do copy the symbol over. */
4111 type = bfd_h_get_8 (input_bfd, sym->e_type);
4112 name = strings + GET_WORD (input_bfd, sym->e_strx);
4118 /* Pass this symbol through. It is the target of an
4119 indirect or warning symbol. */
4120 val = GET_WORD (input_bfd, sym->e_value);
4125 /* Skip this symbol, which is the target of an indirect
4126 symbol that we have changed to no longer be an indirect
4133 struct aout_link_hash_entry *hresolve;
4135 /* We have saved the hash table entry for this symbol, if
4136 there is one. Note that we could just look it up again
4137 in the hash table, provided we first check that it is an
4141 /* Use the name from the hash table, in case the symbol was
4144 name = h->root.root.string;
4146 /* If this is an indirect or warning symbol, then change
4147 hresolve to the base symbol. We also change *sym_hash so
4148 that the relocation routines relocate against the real
4151 if (h != (struct aout_link_hash_entry *) NULL
4152 && (h->root.type == bfd_link_hash_indirect
4153 || h->root.type == bfd_link_hash_warning))
4155 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4156 while (hresolve->root.type == bfd_link_hash_indirect
4157 || hresolve->root.type == bfd_link_hash_warning)
4158 hresolve = ((struct aout_link_hash_entry *)
4159 hresolve->root.u.i.link);
4160 *sym_hash = hresolve;
4163 /* If the symbol has already been written out, skip it. */
4164 if (h != (struct aout_link_hash_entry *) NULL
4165 && h->root.type != bfd_link_hash_warning
4168 if ((type & N_TYPE) == N_INDR
4169 || type == N_WARNING)
4171 *symbol_map = h->indx;
4175 /* See if we are stripping this symbol. */
4181 case strip_debugger:
4182 if ((type & N_STAB) != 0)
4186 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
4196 if (h != (struct aout_link_hash_entry *) NULL)
4201 /* Get the value of the symbol. */
4202 if ((type & N_TYPE) == N_TEXT
4204 symsec = obj_textsec (input_bfd);
4205 else if ((type & N_TYPE) == N_DATA
4207 symsec = obj_datasec (input_bfd);
4208 else if ((type & N_TYPE) == N_BSS
4210 symsec = obj_bsssec (input_bfd);
4211 else if ((type & N_TYPE) == N_ABS
4213 symsec = bfd_abs_section_ptr;
4214 else if (((type & N_TYPE) == N_INDR
4215 && (hresolve == (struct aout_link_hash_entry *) NULL
4216 || (hresolve->root.type != bfd_link_hash_defined
4217 && hresolve->root.type != bfd_link_hash_defweak
4218 && hresolve->root.type != bfd_link_hash_common)))
4219 || type == N_WARNING)
4221 /* Pass the next symbol through unchanged. The
4222 condition above for indirect symbols is so that if
4223 the indirect symbol was defined, we output it with
4224 the correct definition so the debugger will
4227 val = GET_WORD (input_bfd, sym->e_value);
4230 else if ((type & N_STAB) != 0)
4232 val = GET_WORD (input_bfd, sym->e_value);
4237 /* If we get here with an indirect symbol, it means that
4238 we are outputting it with a real definition. In such
4239 a case we do not want to output the next symbol,
4240 which is the target of the indirection. */
4241 if ((type & N_TYPE) == N_INDR)
4246 /* We need to get the value from the hash table. We use
4247 hresolve so that if we have defined an indirect
4248 symbol we output the final definition. */
4249 if (h == (struct aout_link_hash_entry *) NULL)
4251 switch (type & N_TYPE)
4254 symsec = obj_textsec (input_bfd);
4257 symsec = obj_datasec (input_bfd);
4260 symsec = obj_bsssec (input_bfd);
4263 symsec = bfd_abs_section_ptr;
4270 else if (hresolve->root.type == bfd_link_hash_defined
4271 || hresolve->root.type == bfd_link_hash_defweak)
4273 asection *input_section;
4274 asection *output_section;
4276 /* This case usually means a common symbol which was
4277 turned into a defined symbol. */
4278 input_section = hresolve->root.u.def.section;
4279 output_section = input_section->output_section;
4280 BFD_ASSERT (bfd_is_abs_section (output_section)
4281 || output_section->owner == output_bfd);
4282 val = (hresolve->root.u.def.value
4283 + bfd_get_section_vma (output_bfd, output_section)
4284 + input_section->output_offset);
4286 /* Get the correct type based on the section. If
4287 this is a constructed set, force it to be
4288 globally visible. */
4297 if (output_section == obj_textsec (output_bfd))
4298 type |= (hresolve->root.type == bfd_link_hash_defined
4301 else if (output_section == obj_datasec (output_bfd))
4302 type |= (hresolve->root.type == bfd_link_hash_defined
4305 else if (output_section == obj_bsssec (output_bfd))
4306 type |= (hresolve->root.type == bfd_link_hash_defined
4310 type |= (hresolve->root.type == bfd_link_hash_defined
4314 else if (hresolve->root.type == bfd_link_hash_common)
4315 val = hresolve->root.u.c.size;
4316 else if (hresolve->root.type == bfd_link_hash_undefweak)
4324 if (symsec != (asection *) NULL)
4325 val = (symsec->output_section->vma
4326 + symsec->output_offset
4327 + (GET_WORD (input_bfd, sym->e_value)
4330 /* If this is a global symbol set the written flag, and if
4331 it is a local symbol see if we should discard it. */
4332 if (h != (struct aout_link_hash_entry *) NULL)
4335 h->indx = obj_aout_external_sym_count (output_bfd);
4337 else if ((type & N_TYPE) != N_SETT
4338 && (type & N_TYPE) != N_SETD
4339 && (type & N_TYPE) != N_SETB
4340 && (type & N_TYPE) != N_SETA)
4345 case discard_sec_merge:
4348 if ((type & N_STAB) == 0
4349 && bfd_is_local_label_name (input_bfd, name))
4363 /* An N_BINCL symbol indicates the start of the stabs
4364 entries for a header file. We need to scan ahead to the
4365 next N_EINCL symbol, ignoring nesting, adding up all the
4366 characters in the symbol names, not including the file
4367 numbers in types (the first number after an open
4369 if (type == N_BINCL)
4371 struct external_nlist *incl_sym;
4373 struct aout_link_includes_entry *incl_entry;
4374 struct aout_link_includes_totals *t;
4378 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
4382 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4383 if (incl_type == N_EINCL)
4389 else if (incl_type == N_BINCL)
4395 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
4396 for (; *s != '\0'; s++)
4401 /* Skip the file number. */
4403 while (isdigit ((unsigned char) *s))
4411 /* If we have already included a header file with the
4412 same value, then replace this one with an N_EXCL
4414 copy = ! finfo->info->keep_memory;
4415 incl_entry = aout_link_includes_lookup (&finfo->includes,
4417 if (incl_entry == NULL)
4419 for (t = incl_entry->totals; t != NULL; t = t->next)
4420 if (t->total == val)
4424 /* This is the first time we have seen this header
4425 file with this set of stabs strings. */
4426 t = ((struct aout_link_includes_totals *)
4427 bfd_hash_allocate (&finfo->includes.root,
4432 t->next = incl_entry->totals;
4433 incl_entry->totals = t;
4439 /* This is a duplicate header file. We must change
4440 it to be an N_EXCL entry, and mark all the
4441 included symbols to prevent outputting them. */
4445 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
4447 incl_sym++, incl_map++)
4451 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4452 if (incl_type == N_EINCL)
4461 else if (incl_type == N_BINCL)
4470 /* Copy this symbol into the list of symbols we are going to
4472 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4473 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4475 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4478 if (! finfo->info->keep_memory)
4480 /* name points into a string table which we are going to
4481 free. If there is a hash table entry, use that string.
4482 Otherwise, copy name into memory. */
4483 if (h != (struct aout_link_hash_entry *) NULL)
4484 name = h->root.root.string;
4488 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4490 if (strtab_index == (bfd_size_type) -1)
4492 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4493 PUT_WORD (output_bfd, val, outsym->e_value);
4494 *symbol_map = obj_aout_external_sym_count (output_bfd);
4495 ++obj_aout_external_sym_count (output_bfd);
4499 /* Write out the output symbols we have just constructed. */
4500 if (outsym > finfo->output_syms)
4502 bfd_size_type outsym_count;
4504 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
4506 outsym_count = outsym - finfo->output_syms;
4507 if (bfd_write ((PTR) finfo->output_syms,
4508 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4509 (bfd_size_type) outsym_count, output_bfd)
4510 != outsym_count * EXTERNAL_NLIST_SIZE)
4512 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4518 /* Write out a symbol that was not associated with an a.out input
4522 aout_link_write_other_symbol (h, data)
4523 struct aout_link_hash_entry *h;
4526 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4530 struct external_nlist outsym;
4533 output_bfd = finfo->output_bfd;
4535 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4537 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4538 (output_bfd, finfo->info, h)))
4540 /* FIXME: No way to handle errors. */
4550 /* An indx of -2 means the symbol must be written. */
4552 && (finfo->info->strip == strip_all
4553 || (finfo->info->strip == strip_some
4554 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4555 false, false) == NULL)))
4558 switch (h->root.type)
4562 /* Avoid variable not initialized warnings. */
4564 case bfd_link_hash_new:
4565 /* This can happen for set symbols when sets are not being
4568 case bfd_link_hash_undefined:
4569 type = N_UNDF | N_EXT;
4572 case bfd_link_hash_defined:
4573 case bfd_link_hash_defweak:
4577 sec = h->root.u.def.section->output_section;
4578 BFD_ASSERT (bfd_is_abs_section (sec)
4579 || sec->owner == output_bfd);
4580 if (sec == obj_textsec (output_bfd))
4581 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4582 else if (sec == obj_datasec (output_bfd))
4583 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4584 else if (sec == obj_bsssec (output_bfd))
4585 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4587 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4589 val = (h->root.u.def.value
4591 + h->root.u.def.section->output_offset);
4594 case bfd_link_hash_common:
4595 type = N_UNDF | N_EXT;
4596 val = h->root.u.c.size;
4598 case bfd_link_hash_undefweak:
4601 case bfd_link_hash_indirect:
4602 case bfd_link_hash_warning:
4603 /* FIXME: Ignore these for now. The circumstances under which
4604 they should be written out are not clear to me. */
4608 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4609 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4610 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
4611 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
4613 if (indx == (bfd_size_type) -1)
4615 /* FIXME: No way to handle errors. */
4618 PUT_WORD (output_bfd, indx, outsym.e_strx);
4619 PUT_WORD (output_bfd, val, outsym.e_value);
4621 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4622 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4623 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4625 /* FIXME: No way to handle errors. */
4629 finfo->symoff += EXTERNAL_NLIST_SIZE;
4630 h->indx = obj_aout_external_sym_count (output_bfd);
4631 ++obj_aout_external_sym_count (output_bfd);
4636 /* Link an a.out section into the output file. */
4639 aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
4641 struct aout_final_link_info *finfo;
4643 asection *input_section;
4644 file_ptr *reloff_ptr;
4645 bfd_size_type rel_size;
4647 bfd_size_type input_size;
4650 /* Get the section contents. */
4651 input_size = bfd_section_size (input_bfd, input_section);
4652 if (! bfd_get_section_contents (input_bfd, input_section,
4653 (PTR) finfo->contents,
4654 (file_ptr) 0, input_size))
4657 /* Read in the relocs if we haven't already done it. */
4658 if (aout_section_data (input_section) != NULL
4659 && aout_section_data (input_section)->relocs != NULL)
4660 relocs = aout_section_data (input_section)->relocs;
4663 relocs = finfo->relocs;
4666 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4667 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4672 /* Relocate the section contents. */
4673 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4675 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4676 (struct reloc_std_external *) relocs,
4677 rel_size, finfo->contents))
4682 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4683 (struct reloc_ext_external *) relocs,
4684 rel_size, finfo->contents))
4688 /* Write out the section contents. */
4689 if (! bfd_set_section_contents (finfo->output_bfd,
4690 input_section->output_section,
4691 (PTR) finfo->contents,
4692 input_section->output_offset,
4696 /* If we are producing relocateable output, the relocs were
4697 modified, and we now write them out. */
4698 if (finfo->info->relocateable && rel_size > 0)
4700 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
4702 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4705 *reloff_ptr += rel_size;
4707 /* Assert that the relocs have not run into the symbols, and
4708 that if these are the text relocs they have not run into the
4710 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4711 && (reloff_ptr != &finfo->treloff
4713 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4719 /* Get the section corresponding to a reloc index. */
4721 static INLINE asection *
4722 aout_reloc_index_to_section (abfd, indx)
4726 switch (indx & N_TYPE)
4729 return obj_textsec (abfd);
4731 return obj_datasec (abfd);
4733 return obj_bsssec (abfd);
4736 return bfd_abs_section_ptr;
4744 /* Relocate an a.out section using standard a.out relocs. */
4747 aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
4749 struct aout_final_link_info *finfo;
4751 asection *input_section;
4752 struct reloc_std_external *relocs;
4753 bfd_size_type rel_size;
4756 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4758 struct aout_link_hash_entry *,
4759 PTR, bfd_byte *, boolean *,
4762 boolean relocateable;
4763 struct external_nlist *syms;
4765 struct aout_link_hash_entry **sym_hashes;
4767 bfd_size_type reloc_count;
4768 register struct reloc_std_external *rel;
4769 struct reloc_std_external *rel_end;
4771 output_bfd = finfo->output_bfd;
4772 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4774 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4775 BFD_ASSERT (input_bfd->xvec->header_byteorder
4776 == output_bfd->xvec->header_byteorder);
4778 relocateable = finfo->info->relocateable;
4779 syms = obj_aout_external_syms (input_bfd);
4780 strings = obj_aout_external_strings (input_bfd);
4781 sym_hashes = obj_aout_sym_hashes (input_bfd);
4782 symbol_map = finfo->symbol_map;
4784 reloc_count = rel_size / RELOC_STD_SIZE;
4786 rel_end = rel + reloc_count;
4787 for (; rel < rel_end; rel++)
4794 reloc_howto_type *howto;
4795 struct aout_link_hash_entry *h = NULL;
4797 bfd_reloc_status_type r;
4799 r_addr = GET_SWORD (input_bfd, rel->r_address);
4801 #ifdef MY_reloc_howto
4802 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4808 unsigned int howto_idx;
4810 if (bfd_header_big_endian (input_bfd))
4812 r_index = ((rel->r_index[0] << 16)
4813 | (rel->r_index[1] << 8)
4815 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4816 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4817 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4818 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4819 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4820 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4821 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4825 r_index = ((rel->r_index[2] << 16)
4826 | (rel->r_index[1] << 8)
4828 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4829 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4830 r_baserel = (0 != (rel->r_type[0]
4831 & RELOC_STD_BITS_BASEREL_LITTLE));
4832 r_jmptable= (0 != (rel->r_type[0]
4833 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4834 r_relative= (0 != (rel->r_type[0]
4835 & RELOC_STD_BITS_RELATIVE_LITTLE));
4836 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4837 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4840 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4841 + 16 * r_jmptable + 32 * r_relative);
4842 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4843 howto = howto_table_std + howto_idx;
4849 /* We are generating a relocateable output file, and must
4850 modify the reloc accordingly. */
4853 /* If we know the symbol this relocation is against,
4854 convert it into a relocation against a section. This
4855 is what the native linker does. */
4856 h = sym_hashes[r_index];
4857 if (h != (struct aout_link_hash_entry *) NULL
4858 && (h->root.type == bfd_link_hash_defined
4859 || h->root.type == bfd_link_hash_defweak))
4861 asection *output_section;
4863 /* Change the r_extern value. */
4864 if (bfd_header_big_endian (output_bfd))
4865 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4867 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4869 /* Compute a new r_index. */
4870 output_section = h->root.u.def.section->output_section;
4871 if (output_section == obj_textsec (output_bfd))
4873 else if (output_section == obj_datasec (output_bfd))
4875 else if (output_section == obj_bsssec (output_bfd))
4880 /* Add the symbol value and the section VMA to the
4881 addend stored in the contents. */
4882 relocation = (h->root.u.def.value
4883 + output_section->vma
4884 + h->root.u.def.section->output_offset);
4888 /* We must change r_index according to the symbol
4890 r_index = symbol_map[r_index];
4896 /* We decided to strip this symbol, but it
4897 turns out that we can't. Note that we
4898 lose the other and desc information here.
4899 I don't think that will ever matter for a
4905 if (! aout_link_write_other_symbol (h,
4915 name = strings + GET_WORD (input_bfd,
4916 syms[r_index].e_strx);
4917 if (! ((*finfo->info->callbacks->unattached_reloc)
4918 (finfo->info, name, input_bfd, input_section,
4928 /* Write out the new r_index value. */
4929 if (bfd_header_big_endian (output_bfd))
4931 rel->r_index[0] = r_index >> 16;
4932 rel->r_index[1] = r_index >> 8;
4933 rel->r_index[2] = r_index;
4937 rel->r_index[2] = r_index >> 16;
4938 rel->r_index[1] = r_index >> 8;
4939 rel->r_index[0] = r_index;
4946 /* This is a relocation against a section. We must
4947 adjust by the amount that the section moved. */
4948 section = aout_reloc_index_to_section (input_bfd, r_index);
4949 relocation = (section->output_section->vma
4950 + section->output_offset
4954 /* Change the address of the relocation. */
4955 PUT_WORD (output_bfd,
4956 r_addr + input_section->output_offset,
4959 /* Adjust a PC relative relocation by removing the reference
4960 to the original address in the section and including the
4961 reference to the new address. */
4963 relocation -= (input_section->output_section->vma
4964 + input_section->output_offset
4965 - input_section->vma);
4967 #ifdef MY_relocatable_reloc
4968 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4971 if (relocation == 0)
4974 r = MY_relocate_contents (howto,
4975 input_bfd, relocation,
4982 /* We are generating an executable, and must do a full
4988 h = sym_hashes[r_index];
4990 if (h != (struct aout_link_hash_entry *) NULL
4991 && (h->root.type == bfd_link_hash_defined
4992 || h->root.type == bfd_link_hash_defweak))
4994 relocation = (h->root.u.def.value
4995 + h->root.u.def.section->output_section->vma
4996 + h->root.u.def.section->output_offset);
4998 else if (h != (struct aout_link_hash_entry *) NULL
4999 && h->root.type == bfd_link_hash_undefweak)
5011 section = aout_reloc_index_to_section (input_bfd, r_index);
5012 relocation = (section->output_section->vma
5013 + section->output_offset
5016 relocation += input_section->vma;
5019 if (check_dynamic_reloc != NULL)
5023 if (! ((*check_dynamic_reloc)
5024 (finfo->info, input_bfd, input_section, h,
5025 (PTR) rel, contents, &skip, &relocation)))
5031 /* Now warn if a global symbol is undefined. We could not
5032 do this earlier, because check_dynamic_reloc might want
5033 to skip this reloc. */
5034 if (hundef && ! finfo->info->shared && ! r_baserel)
5039 name = h->root.root.string;
5041 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5042 if (! ((*finfo->info->callbacks->undefined_symbol)
5043 (finfo->info, name, input_bfd, input_section,
5048 r = MY_final_link_relocate (howto,
5049 input_bfd, input_section,
5050 contents, r_addr, relocation,
5054 if (r != bfd_reloc_ok)
5059 case bfd_reloc_outofrange:
5061 case bfd_reloc_overflow:
5066 name = h->root.root.string;
5068 name = strings + GET_WORD (input_bfd,
5069 syms[r_index].e_strx);
5074 s = aout_reloc_index_to_section (input_bfd, r_index);
5075 name = bfd_section_name (input_bfd, s);
5077 if (! ((*finfo->info->callbacks->reloc_overflow)
5078 (finfo->info, name, howto->name,
5079 (bfd_vma) 0, input_bfd, input_section, r_addr)))
5090 /* Relocate an a.out section using extended a.out relocs. */
5093 aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
5095 struct aout_final_link_info *finfo;
5097 asection *input_section;
5098 struct reloc_ext_external *relocs;
5099 bfd_size_type rel_size;
5102 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
5104 struct aout_link_hash_entry *,
5105 PTR, bfd_byte *, boolean *,
5108 boolean relocateable;
5109 struct external_nlist *syms;
5111 struct aout_link_hash_entry **sym_hashes;
5113 bfd_size_type reloc_count;
5114 register struct reloc_ext_external *rel;
5115 struct reloc_ext_external *rel_end;
5117 output_bfd = finfo->output_bfd;
5118 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
5120 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
5121 BFD_ASSERT (input_bfd->xvec->header_byteorder
5122 == output_bfd->xvec->header_byteorder);
5124 relocateable = finfo->info->relocateable;
5125 syms = obj_aout_external_syms (input_bfd);
5126 strings = obj_aout_external_strings (input_bfd);
5127 sym_hashes = obj_aout_sym_hashes (input_bfd);
5128 symbol_map = finfo->symbol_map;
5130 reloc_count = rel_size / RELOC_EXT_SIZE;
5132 rel_end = rel + reloc_count;
5133 for (; rel < rel_end; rel++)
5138 unsigned int r_type;
5140 struct aout_link_hash_entry *h = NULL;
5141 asection *r_section = NULL;
5144 r_addr = GET_SWORD (input_bfd, rel->r_address);
5146 if (bfd_header_big_endian (input_bfd))
5148 r_index = ((rel->r_index[0] << 16)
5149 | (rel->r_index[1] << 8)
5151 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
5152 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
5153 >> RELOC_EXT_BITS_TYPE_SH_BIG);
5157 r_index = ((rel->r_index[2] << 16)
5158 | (rel->r_index[1] << 8)
5160 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
5161 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
5162 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
5165 r_addend = GET_SWORD (input_bfd, rel->r_addend);
5167 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
5171 /* We are generating a relocateable output file, and must
5172 modify the reloc accordingly. */
5174 || r_type == RELOC_BASE10
5175 || r_type == RELOC_BASE13
5176 || r_type == RELOC_BASE22)
5178 /* If we know the symbol this relocation is against,
5179 convert it into a relocation against a section. This
5180 is what the native linker does. */
5181 if (r_type == RELOC_BASE10
5182 || r_type == RELOC_BASE13
5183 || r_type == RELOC_BASE22)
5186 h = sym_hashes[r_index];
5187 if (h != (struct aout_link_hash_entry *) NULL
5188 && (h->root.type == bfd_link_hash_defined
5189 || h->root.type == bfd_link_hash_defweak))
5191 asection *output_section;
5193 /* Change the r_extern value. */
5194 if (bfd_header_big_endian (output_bfd))
5195 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
5197 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
5199 /* Compute a new r_index. */
5200 output_section = h->root.u.def.section->output_section;
5201 if (output_section == obj_textsec (output_bfd))
5203 else if (output_section == obj_datasec (output_bfd))
5205 else if (output_section == obj_bsssec (output_bfd))
5210 /* Add the symbol value and the section VMA to the
5212 relocation = (h->root.u.def.value
5213 + output_section->vma
5214 + h->root.u.def.section->output_offset);
5216 /* Now RELOCATION is the VMA of the final
5217 destination. If this is a PC relative reloc,
5218 then ADDEND is the negative of the source VMA.
5219 We want to set ADDEND to the difference between
5220 the destination VMA and the source VMA, which
5221 means we must adjust RELOCATION by the change in
5222 the source VMA. This is done below. */
5226 /* We must change r_index according to the symbol
5228 r_index = symbol_map[r_index];
5234 /* We decided to strip this symbol, but it
5235 turns out that we can't. Note that we
5236 lose the other and desc information here.
5237 I don't think that will ever matter for a
5243 if (! aout_link_write_other_symbol (h,
5253 name = strings + GET_WORD (input_bfd,
5254 syms[r_index].e_strx);
5255 if (! ((*finfo->info->callbacks->unattached_reloc)
5256 (finfo->info, name, input_bfd, input_section,
5265 /* If this is a PC relative reloc, then the addend
5266 is the negative of the source VMA. We must
5267 adjust it by the change in the source VMA. This
5271 /* Write out the new r_index value. */
5272 if (bfd_header_big_endian (output_bfd))
5274 rel->r_index[0] = r_index >> 16;
5275 rel->r_index[1] = r_index >> 8;
5276 rel->r_index[2] = r_index;
5280 rel->r_index[2] = r_index >> 16;
5281 rel->r_index[1] = r_index >> 8;
5282 rel->r_index[0] = r_index;
5287 /* This is a relocation against a section. We must
5288 adjust by the amount that the section moved. */
5289 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5290 relocation = (r_section->output_section->vma
5291 + r_section->output_offset
5294 /* If this is a PC relative reloc, then the addend is
5295 the difference in VMA between the destination and the
5296 source. We have just adjusted for the change in VMA
5297 of the destination, so we must also adjust by the
5298 change in VMA of the source. This is done below. */
5301 /* As described above, we must always adjust a PC relative
5302 reloc by the change in VMA of the source. However, if
5303 pcrel_offset is set, then the addend does not include the
5304 location within the section, in which case we don't need
5305 to adjust anything. */
5306 if (howto_table_ext[r_type].pc_relative
5307 && ! howto_table_ext[r_type].pcrel_offset)
5308 relocation -= (input_section->output_section->vma
5309 + input_section->output_offset
5310 - input_section->vma);
5312 /* Change the addend if necessary. */
5313 if (relocation != 0)
5314 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
5316 /* Change the address of the relocation. */
5317 PUT_WORD (output_bfd,
5318 r_addr + input_section->output_offset,
5324 bfd_reloc_status_type r;
5326 /* We are generating an executable, and must do a full
5332 h = sym_hashes[r_index];
5334 if (h != (struct aout_link_hash_entry *) NULL
5335 && (h->root.type == bfd_link_hash_defined
5336 || h->root.type == bfd_link_hash_defweak))
5338 relocation = (h->root.u.def.value
5339 + h->root.u.def.section->output_section->vma
5340 + h->root.u.def.section->output_offset);
5342 else if (h != (struct aout_link_hash_entry *) NULL
5343 && h->root.type == bfd_link_hash_undefweak)
5351 else if (r_type == RELOC_BASE10
5352 || r_type == RELOC_BASE13
5353 || r_type == RELOC_BASE22)
5355 struct external_nlist *sym;
5358 /* For base relative relocs, r_index is always an index
5359 into the symbol table, even if r_extern is 0. */
5360 sym = syms + r_index;
5361 type = bfd_h_get_8 (input_bfd, sym->e_type);
5362 if ((type & N_TYPE) == N_TEXT
5364 r_section = obj_textsec (input_bfd);
5365 else if ((type & N_TYPE) == N_DATA
5367 r_section = obj_datasec (input_bfd);
5368 else if ((type & N_TYPE) == N_BSS
5370 r_section = obj_bsssec (input_bfd);
5371 else if ((type & N_TYPE) == N_ABS
5373 r_section = bfd_abs_section_ptr;
5376 relocation = (r_section->output_section->vma
5377 + r_section->output_offset
5378 + (GET_WORD (input_bfd, sym->e_value)
5383 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5385 /* If this is a PC relative reloc, then R_ADDEND is the
5386 difference between the two vmas, or
5387 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5389 old_dest_sec == section->vma
5391 old_src_sec == input_section->vma
5393 old_src_off == r_addr
5395 _bfd_final_link_relocate expects RELOCATION +
5396 R_ADDEND to be the VMA of the destination minus
5397 r_addr (the minus r_addr is because this relocation
5398 is not pcrel_offset, which is a bit confusing and
5399 should, perhaps, be changed), or
5402 new_dest_sec == output_section->vma + output_offset
5403 We arrange for this to happen by setting RELOCATION to
5404 new_dest_sec + old_src_sec - old_dest_sec
5406 If this is not a PC relative reloc, then R_ADDEND is
5407 simply the VMA of the destination, so we set
5408 RELOCATION to the change in the destination VMA, or
5409 new_dest_sec - old_dest_sec
5411 relocation = (r_section->output_section->vma
5412 + r_section->output_offset
5414 if (howto_table_ext[r_type].pc_relative)
5415 relocation += input_section->vma;
5418 if (check_dynamic_reloc != NULL)
5422 if (! ((*check_dynamic_reloc)
5423 (finfo->info, input_bfd, input_section, h,
5424 (PTR) rel, contents, &skip, &relocation)))
5430 /* Now warn if a global symbol is undefined. We could not
5431 do this earlier, because check_dynamic_reloc might want
5432 to skip this reloc. */
5434 && ! finfo->info->shared
5435 && r_type != RELOC_BASE10
5436 && r_type != RELOC_BASE13
5437 && r_type != RELOC_BASE22)
5442 name = h->root.root.string;
5444 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5445 if (! ((*finfo->info->callbacks->undefined_symbol)
5446 (finfo->info, name, input_bfd, input_section,
5451 if (r_type != RELOC_SPARC_REV32)
5452 r = MY_final_link_relocate (howto_table_ext + r_type,
5453 input_bfd, input_section,
5454 contents, r_addr, relocation,
5460 x = bfd_get_32 (input_bfd, contents + r_addr);
5461 x = x + relocation + r_addend;
5462 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
5466 if (r != bfd_reloc_ok)
5471 case bfd_reloc_outofrange:
5473 case bfd_reloc_overflow:
5478 name = h->root.root.string;
5480 || r_type == RELOC_BASE10
5481 || r_type == RELOC_BASE13
5482 || r_type == RELOC_BASE22)
5483 name = strings + GET_WORD (input_bfd,
5484 syms[r_index].e_strx);
5489 s = aout_reloc_index_to_section (input_bfd, r_index);
5490 name = bfd_section_name (input_bfd, s);
5492 if (! ((*finfo->info->callbacks->reloc_overflow)
5493 (finfo->info, name, howto_table_ext[r_type].name,
5494 r_addend, input_bfd, input_section, r_addr)))
5506 /* Handle a link order which is supposed to generate a reloc. */
5509 aout_link_reloc_link_order (finfo, o, p)
5510 struct aout_final_link_info *finfo;
5512 struct bfd_link_order *p;
5514 struct bfd_link_order_reloc *pr;
5517 reloc_howto_type *howto;
5518 file_ptr *reloff_ptr = NULL;
5519 struct reloc_std_external srel;
5520 struct reloc_ext_external erel;
5525 if (p->type == bfd_section_reloc_link_order)
5528 if (bfd_is_abs_section (pr->u.section))
5529 r_index = N_ABS | N_EXT;
5532 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5533 r_index = pr->u.section->target_index;
5538 struct aout_link_hash_entry *h;
5540 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5542 h = ((struct aout_link_hash_entry *)
5543 bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info,
5544 pr->u.name, false, false, true));
5545 if (h != (struct aout_link_hash_entry *) NULL
5550 /* We decided to strip this symbol, but it turns out that we
5551 can't. Note that we lose the other and desc information
5552 here. I don't think that will ever matter for a global
5556 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5562 if (! ((*finfo->info->callbacks->unattached_reloc)
5563 (finfo->info, pr->u.name, (bfd *) NULL,
5564 (asection *) NULL, (bfd_vma) 0)))
5570 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
5573 bfd_set_error (bfd_error_bad_value);
5577 if (o == obj_textsec (finfo->output_bfd))
5578 reloff_ptr = &finfo->treloff;
5579 else if (o == obj_datasec (finfo->output_bfd))
5580 reloff_ptr = &finfo->dreloff;
5584 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5587 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5597 r_pcrel = howto->pc_relative;
5598 r_baserel = (howto->type & 8) != 0;
5599 r_jmptable = (howto->type & 16) != 0;
5600 r_relative = (howto->type & 32) != 0;
5601 r_length = howto->size;
5603 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5604 if (bfd_header_big_endian (finfo->output_bfd))
5606 srel.r_index[0] = r_index >> 16;
5607 srel.r_index[1] = r_index >> 8;
5608 srel.r_index[2] = r_index;
5610 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5611 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5612 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5613 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5614 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5615 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5619 srel.r_index[2] = r_index >> 16;
5620 srel.r_index[1] = r_index >> 8;
5621 srel.r_index[0] = r_index;
5623 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5624 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5625 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5626 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5627 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5628 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5632 rel_ptr = (PTR) &srel;
5634 /* We have to write the addend into the object file, since
5635 standard a.out relocs are in place. It would be more
5636 reliable if we had the current contents of the file here,
5637 rather than assuming zeroes, but we can't read the file since
5638 it was opened using bfd_openw. */
5639 if (pr->addend != 0)
5642 bfd_reloc_status_type r;
5646 size = bfd_get_reloc_size (howto);
5647 buf = (bfd_byte *) bfd_zmalloc (size);
5648 if (buf == (bfd_byte *) NULL)
5650 r = MY_relocate_contents (howto, finfo->output_bfd,
5657 case bfd_reloc_outofrange:
5659 case bfd_reloc_overflow:
5660 if (! ((*finfo->info->callbacks->reloc_overflow)
5662 (p->type == bfd_section_reloc_link_order
5663 ? bfd_section_name (finfo->output_bfd,
5666 howto->name, pr->addend, (bfd *) NULL,
5667 (asection *) NULL, (bfd_vma) 0)))
5674 ok = bfd_set_section_contents (finfo->output_bfd, o,
5676 (file_ptr) p->offset,
5685 #ifdef MY_put_ext_reloc
5686 MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset,
5687 howto, &erel, pr->addend);
5689 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5691 if (bfd_header_big_endian (finfo->output_bfd))
5693 erel.r_index[0] = r_index >> 16;
5694 erel.r_index[1] = r_index >> 8;
5695 erel.r_index[2] = r_index;
5697 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5698 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5702 erel.r_index[2] = r_index >> 16;
5703 erel.r_index[1] = r_index >> 8;
5704 erel.r_index[0] = r_index;
5706 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5707 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5710 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5711 #endif /* MY_put_ext_reloc */
5713 rel_ptr = (PTR) &erel;
5716 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5717 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5718 obj_reloc_entry_size (finfo->output_bfd),
5720 != obj_reloc_entry_size (finfo->output_bfd)))
5723 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5725 /* Assert that the relocs have not run into the symbols, and that n
5726 the text relocs have not run into the data relocs. */
5727 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5728 && (reloff_ptr != &finfo->treloff
5730 <= obj_datasec (finfo->output_bfd)->rel_filepos)));