1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
4 Written by Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 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;
699 aout_@var{size}_machine_type
702 enum machine_type aout_@var{size}_machine_type
703 (enum bfd_architecture arch,
704 unsigned long machine));
707 Keep track of machine architecture and machine type for
708 a.out's. Return the <<machine_type>> for a particular
709 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
710 and machine can't be represented in a.out format.
712 If the architecture is understood, machine type 0 (default)
713 is always understood.
717 NAME(aout,machine_type) (arch, machine, unknown)
718 enum bfd_architecture arch;
719 unsigned long machine;
722 enum machine_type arch_flags;
724 arch_flags = M_UNKNOWN;
730 || machine == bfd_mach_sparc
731 || machine == bfd_mach_sparc_sparclite
732 || machine == bfd_mach_sparc_sparclite_le
733 || machine == bfd_mach_sparc_v9)
734 arch_flags = M_SPARC;
735 else if (machine == bfd_mach_sparc_sparclet)
736 arch_flags = M_SPARCLET;
741 case 0: arch_flags = M_68010; break;
742 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = false; break;
743 case bfd_mach_m68010: arch_flags = M_68010; break;
744 case bfd_mach_m68020: arch_flags = M_68020; break;
745 default: arch_flags = M_UNKNOWN; break;
750 if (machine == 0) arch_flags = M_386;
754 if (machine == 0) arch_flags = M_29K;
758 if (machine == 0) arch_flags = M_ARM;
764 case bfd_mach_mips3000:
765 case bfd_mach_mips3900:
766 arch_flags = M_MIPS1;
768 case bfd_mach_mips6000:
769 arch_flags = M_MIPS2;
771 case bfd_mach_mips4000:
772 case bfd_mach_mips4010:
773 case bfd_mach_mips4100:
774 case bfd_mach_mips4300:
775 case bfd_mach_mips4400:
776 case bfd_mach_mips4600:
777 case bfd_mach_mips4650:
778 case bfd_mach_mips8000:
779 case bfd_mach_mips10000:
780 case bfd_mach_mips16:
781 /* FIXME: These should be MIPS3 or MIPS4. */
782 arch_flags = M_MIPS2;
785 arch_flags = M_UNKNOWN;
792 case 0: arch_flags = M_NS32532; break;
793 case 32032: arch_flags = M_NS32032; break;
794 case 32532: arch_flags = M_NS32532; break;
795 default: arch_flags = M_UNKNOWN; break;
804 arch_flags = M_UNKNOWN;
807 if (arch_flags != M_UNKNOWN)
816 aout_@var{size}_set_arch_mach
819 boolean aout_@var{size}_set_arch_mach,
821 enum bfd_architecture arch,
822 unsigned long machine));
825 Set the architecture and the machine of the BFD @var{abfd} to the
826 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
827 can support the architecture required.
831 NAME(aout,set_arch_mach) (abfd, arch, machine)
833 enum bfd_architecture arch;
834 unsigned long machine;
836 if (! bfd_default_set_arch_mach (abfd, arch, machine))
839 if (arch != bfd_arch_unknown)
843 NAME(aout,machine_type) (arch, machine, &unknown);
848 /* Determine the size of a relocation entry */
853 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
856 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
860 return (*aout_backend_info(abfd)->set_sizes) (abfd);
864 adjust_o_magic (abfd, execp)
866 struct internal_exec *execp;
868 file_ptr pos = adata (abfd).exec_bytes_size;
873 obj_textsec(abfd)->filepos = pos;
874 if (!obj_textsec(abfd)->user_set_vma)
875 obj_textsec(abfd)->vma = vma;
877 vma = obj_textsec(abfd)->vma;
879 pos += obj_textsec(abfd)->_raw_size;
880 vma += obj_textsec(abfd)->_raw_size;
883 if (!obj_datasec(abfd)->user_set_vma)
885 #if 0 /* ?? Does alignment in the file image really matter? */
886 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
888 obj_textsec(abfd)->_raw_size += pad;
891 obj_datasec(abfd)->vma = vma;
894 vma = obj_datasec(abfd)->vma;
895 obj_datasec(abfd)->filepos = pos;
896 pos += obj_datasec(abfd)->_raw_size;
897 vma += obj_datasec(abfd)->_raw_size;
900 if (!obj_bsssec(abfd)->user_set_vma)
903 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
905 obj_datasec(abfd)->_raw_size += pad;
908 obj_bsssec(abfd)->vma = vma;
912 /* The VMA of the .bss section is set by the the VMA of the
913 .data section plus the size of the .data section. We may
914 need to add padding bytes to make this true. */
915 pad = obj_bsssec (abfd)->vma - vma;
918 obj_datasec (abfd)->_raw_size += pad;
922 obj_bsssec(abfd)->filepos = pos;
924 /* Fix up the exec header. */
925 execp->a_text = obj_textsec(abfd)->_raw_size;
926 execp->a_data = obj_datasec(abfd)->_raw_size;
927 execp->a_bss = obj_bsssec(abfd)->_raw_size;
928 N_SET_MAGIC (*execp, OMAGIC);
932 adjust_z_magic (abfd, execp)
934 struct internal_exec *execp;
936 bfd_size_type data_pad, text_pad;
938 CONST struct aout_backend_data *abdp;
939 int ztih; /* Nonzero if text includes exec header. */
941 abdp = aout_backend_info (abfd);
945 && (abdp->text_includes_header
946 || obj_aout_subformat (abfd) == q_magic_format));
947 obj_textsec(abfd)->filepos = (ztih
948 ? adata(abfd).exec_bytes_size
949 : adata(abfd).zmagic_disk_block_size);
950 if (! obj_textsec(abfd)->user_set_vma)
952 /* ?? Do we really need to check for relocs here? */
953 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
956 ? (abdp->default_text_vma
957 + adata(abfd).exec_bytes_size)
958 : abdp->default_text_vma));
963 /* The .text section is being loaded at an unusual address. We
964 may need to pad it such that the .data section starts at a page
967 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
968 & (adata (abfd).page_size - 1));
970 text_pad = ((- obj_textsec (abfd)->vma)
971 & (adata (abfd).page_size - 1));
974 /* Find start of data. */
977 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
978 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
982 /* Note that if page_size == zmagic_disk_block_size, then
983 filepos == page_size, and this case is the same as the ztih
985 text_end = obj_textsec (abfd)->_raw_size;
986 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
987 text_end += obj_textsec (abfd)->filepos;
989 obj_textsec(abfd)->_raw_size += text_pad;
990 text_end += text_pad;
993 if (!obj_datasec(abfd)->user_set_vma)
996 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
997 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
999 if (abdp && abdp->zmagic_mapped_contiguous)
1001 text_pad = (obj_datasec(abfd)->vma
1002 - obj_textsec(abfd)->vma
1003 - obj_textsec(abfd)->_raw_size);
1004 obj_textsec(abfd)->_raw_size += text_pad;
1006 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
1007 + obj_textsec(abfd)->_raw_size);
1009 /* Fix up exec header while we're at it. */
1010 execp->a_text = obj_textsec(abfd)->_raw_size;
1011 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
1012 execp->a_text += adata(abfd).exec_bytes_size;
1013 if (obj_aout_subformat (abfd) == q_magic_format)
1014 N_SET_MAGIC (*execp, QMAGIC);
1016 N_SET_MAGIC (*execp, ZMAGIC);
1018 /* Spec says data section should be rounded up to page boundary. */
1019 obj_datasec(abfd)->_raw_size
1020 = align_power (obj_datasec(abfd)->_raw_size,
1021 obj_bsssec(abfd)->alignment_power);
1022 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
1023 adata(abfd).page_size);
1024 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
1027 if (!obj_bsssec(abfd)->user_set_vma)
1028 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
1029 + obj_datasec(abfd)->_raw_size);
1030 /* If the BSS immediately follows the data section and extra space
1031 in the page is left after the data section, fudge data
1032 in the header so that the bss section looks smaller by that
1033 amount. We'll start the bss section there, and lie to the OS.
1034 (Note that a linker script, as well as the above assignment,
1035 could have explicitly set the BSS vma to immediately follow
1036 the data section.) */
1037 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
1038 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
1039 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
1040 obj_bsssec(abfd)->_raw_size - data_pad;
1042 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1046 adjust_n_magic (abfd, execp)
1048 struct internal_exec *execp;
1050 file_ptr pos = adata(abfd).exec_bytes_size;
1055 obj_textsec(abfd)->filepos = pos;
1056 if (!obj_textsec(abfd)->user_set_vma)
1057 obj_textsec(abfd)->vma = vma;
1059 vma = obj_textsec(abfd)->vma;
1060 pos += obj_textsec(abfd)->_raw_size;
1061 vma += obj_textsec(abfd)->_raw_size;
1064 obj_datasec(abfd)->filepos = pos;
1065 if (!obj_datasec(abfd)->user_set_vma)
1066 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1067 vma = obj_datasec(abfd)->vma;
1069 /* Since BSS follows data immediately, see if it needs alignment. */
1070 vma += obj_datasec(abfd)->_raw_size;
1071 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
1072 obj_datasec(abfd)->_raw_size += pad;
1073 pos += obj_datasec(abfd)->_raw_size;
1076 if (!obj_bsssec(abfd)->user_set_vma)
1077 obj_bsssec(abfd)->vma = vma;
1079 vma = obj_bsssec(abfd)->vma;
1081 /* Fix up exec header. */
1082 execp->a_text = obj_textsec(abfd)->_raw_size;
1083 execp->a_data = obj_datasec(abfd)->_raw_size;
1084 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1085 N_SET_MAGIC (*execp, NMAGIC);
1089 NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1091 bfd_size_type *text_size;
1092 file_ptr *text_end ATTRIBUTE_UNUSED;
1094 struct internal_exec *execp = exec_hdr (abfd);
1096 if (! NAME(aout,make_sections) (abfd))
1099 if (adata(abfd).magic != undecided_magic)
1102 obj_textsec(abfd)->_raw_size =
1103 align_power(obj_textsec(abfd)->_raw_size,
1104 obj_textsec(abfd)->alignment_power);
1106 *text_size = obj_textsec (abfd)->_raw_size;
1107 /* Rule (heuristic) for when to pad to a new page. Note that there
1108 are (at least) two ways demand-paged (ZMAGIC) files have been
1109 handled. Most Berkeley-based systems start the text segment at
1110 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1111 segment right after the exec header; the latter is counted in the
1112 text segment size, and is paged in by the kernel with the rest of
1115 /* This perhaps isn't the right way to do this, but made it simpler for me
1116 to understand enough to implement it. Better would probably be to go
1117 right from BFD flags to alignment/positioning characteristics. But the
1118 old code was sloppy enough about handling the flags, and had enough
1119 other magic, that it was a little hard for me to understand. I think
1120 I understand it better now, but I haven't time to do the cleanup this
1123 if (abfd->flags & D_PAGED)
1124 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1125 adata(abfd).magic = z_magic;
1126 else if (abfd->flags & WP_TEXT)
1127 adata(abfd).magic = n_magic;
1129 adata(abfd).magic = o_magic;
1131 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1133 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1135 switch (adata(abfd).magic) {
1136 case n_magic: str = "NMAGIC"; break;
1137 case o_magic: str = "OMAGIC"; break;
1138 case z_magic: str = "ZMAGIC"; break;
1143 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1144 obj_textsec(abfd)->alignment_power,
1145 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1146 obj_datasec(abfd)->alignment_power,
1147 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1148 obj_bsssec(abfd)->alignment_power);
1152 switch (adata(abfd).magic)
1155 adjust_o_magic (abfd, execp);
1158 adjust_z_magic (abfd, execp);
1161 adjust_n_magic (abfd, execp);
1167 #ifdef BFD_AOUT_DEBUG
1168 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1169 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1170 obj_textsec(abfd)->filepos,
1171 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1172 obj_datasec(abfd)->filepos,
1173 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1181 aout_@var{size}_new_section_hook
1184 boolean aout_@var{size}_new_section_hook,
1186 asection *newsect));
1189 Called by the BFD in response to a @code{bfd_make_section}
1193 NAME(aout,new_section_hook) (abfd, newsect)
1197 /* align to double at least */
1198 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
1201 if (bfd_get_format (abfd) == bfd_object)
1203 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1204 obj_textsec(abfd)= newsect;
1205 newsect->target_index = N_TEXT;
1209 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1210 obj_datasec(abfd) = newsect;
1211 newsect->target_index = N_DATA;
1215 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1216 obj_bsssec(abfd) = newsect;
1217 newsect->target_index = N_BSS;
1223 /* We allow more than three sections internally */
1228 NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1233 bfd_size_type count;
1236 bfd_size_type text_size;
1238 if (! abfd->output_has_begun)
1240 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1244 if (section == obj_bsssec (abfd))
1246 bfd_set_error (bfd_error_no_contents);
1250 if (section != obj_textsec (abfd)
1251 && section != obj_datasec (abfd))
1253 (*_bfd_error_handler)
1254 (_("%s: can not represent section `%s' in a.out object file format"),
1255 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1256 bfd_set_error (bfd_error_nonrepresentable_section);
1262 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1263 || bfd_write (location, 1, count, abfd) != count)
1270 /* Read the external symbols from an a.out file. */
1273 aout_get_external_symbols (abfd)
1276 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1278 bfd_size_type count;
1279 struct external_nlist *syms;
1281 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1284 if (bfd_get_file_window (abfd,
1285 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
1286 &obj_aout_sym_window (abfd), true) == false)
1288 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1290 /* We allocate using malloc to make the values easy to free
1291 later on. If we put them on the objalloc it might not be
1292 possible to free them. */
1293 syms = ((struct external_nlist *)
1294 bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
1295 if (syms == (struct external_nlist *) NULL && count != 0)
1298 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1299 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1300 != exec_hdr (abfd)->a_syms))
1307 obj_aout_external_syms (abfd) = syms;
1308 obj_aout_external_sym_count (abfd) = count;
1311 if (obj_aout_external_strings (abfd) == NULL
1312 && exec_hdr (abfd)->a_syms != 0)
1314 unsigned char string_chars[BYTES_IN_WORD];
1315 bfd_size_type stringsize;
1318 /* Get the size of the strings. */
1319 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1320 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1323 stringsize = GET_WORD (abfd, string_chars);
1326 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
1327 &obj_aout_string_window (abfd), true) == false)
1329 strings = (char *) obj_aout_string_window (abfd).data;
1331 strings = (char *) bfd_malloc ((size_t) stringsize + 1);
1332 if (strings == NULL)
1335 /* Skip space for the string count in the buffer for convenience
1336 when using indexes. */
1337 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1339 != stringsize - BYTES_IN_WORD)
1346 /* Ensure that a zero index yields an empty string. */
1349 strings[stringsize - 1] = 0;
1351 obj_aout_external_strings (abfd) = strings;
1352 obj_aout_external_string_size (abfd) = stringsize;
1358 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1359 and symbol->value fields of CACHE_PTR will be set from the a.out
1360 nlist structure. This function is responsible for setting
1361 symbol->flags and symbol->section, and adjusting symbol->value. */
1364 translate_from_native_sym_flags (abfd, cache_ptr)
1366 aout_symbol_type *cache_ptr;
1370 if ((cache_ptr->type & N_STAB) != 0
1371 || cache_ptr->type == N_FN)
1375 /* This is a debugging symbol. */
1377 cache_ptr->symbol.flags = BSF_DEBUGGING;
1379 /* Work out the symbol section. */
1380 switch (cache_ptr->type & N_TYPE)
1384 sec = obj_textsec (abfd);
1387 sec = obj_datasec (abfd);
1390 sec = obj_bsssec (abfd);
1394 sec = bfd_abs_section_ptr;
1398 cache_ptr->symbol.section = sec;
1399 cache_ptr->symbol.value -= sec->vma;
1404 /* Get the default visibility. This does not apply to all types, so
1405 we just hold it in a local variable to use if wanted. */
1406 if ((cache_ptr->type & N_EXT) == 0)
1407 visible = BSF_LOCAL;
1409 visible = BSF_GLOBAL;
1411 switch (cache_ptr->type)
1414 case N_ABS: case N_ABS | N_EXT:
1415 cache_ptr->symbol.section = bfd_abs_section_ptr;
1416 cache_ptr->symbol.flags = visible;
1419 case N_UNDF | N_EXT:
1420 if (cache_ptr->symbol.value != 0)
1422 /* This is a common symbol. */
1423 cache_ptr->symbol.flags = BSF_GLOBAL;
1424 cache_ptr->symbol.section = bfd_com_section_ptr;
1428 cache_ptr->symbol.flags = 0;
1429 cache_ptr->symbol.section = bfd_und_section_ptr;
1433 case N_TEXT: case N_TEXT | N_EXT:
1434 cache_ptr->symbol.section = obj_textsec (abfd);
1435 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1436 cache_ptr->symbol.flags = visible;
1439 /* N_SETV symbols used to represent set vectors placed in the
1440 data section. They are no longer generated. Theoretically,
1441 it was possible to extract the entries and combine them with
1442 new ones, although I don't know if that was ever actually
1443 done. Unless that feature is restored, treat them as data
1445 case N_SETV: case N_SETV | N_EXT:
1446 case N_DATA: case N_DATA | N_EXT:
1447 cache_ptr->symbol.section = obj_datasec (abfd);
1448 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1449 cache_ptr->symbol.flags = visible;
1452 case N_BSS: case N_BSS | N_EXT:
1453 cache_ptr->symbol.section = obj_bsssec (abfd);
1454 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1455 cache_ptr->symbol.flags = visible;
1458 case N_SETA: case N_SETA | N_EXT:
1459 case N_SETT: case N_SETT | N_EXT:
1460 case N_SETD: case N_SETD | N_EXT:
1461 case N_SETB: case N_SETB | N_EXT:
1463 /* This code is no longer needed. It used to be used to make
1464 the linker handle set symbols, but they are now handled in
1465 the add_symbols routine instead. */
1468 arelent_chain *reloc;
1469 asection *into_section;
1471 /* This is a set symbol. The name of the symbol is the name
1472 of the set (e.g., __CTOR_LIST__). The value of the symbol
1473 is the value to add to the set. We create a section with
1474 the same name as the symbol, and add a reloc to insert the
1475 appropriate value into the section.
1477 This action is actually obsolete; it used to make the
1478 linker do the right thing, but the linker no longer uses
1481 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1482 if (section == NULL)
1486 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1490 strcpy (copy, cache_ptr->symbol.name);
1491 section = bfd_make_section (abfd, copy);
1492 if (section == NULL)
1496 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1500 /* Build a relocation entry for the constructor. */
1501 switch (cache_ptr->type & N_TYPE)
1504 into_section = bfd_abs_section_ptr;
1505 cache_ptr->type = N_ABS;
1508 into_section = obj_textsec (abfd);
1509 cache_ptr->type = N_TEXT;
1512 into_section = obj_datasec (abfd);
1513 cache_ptr->type = N_DATA;
1516 into_section = obj_bsssec (abfd);
1517 cache_ptr->type = N_BSS;
1521 /* Build a relocation pointing into the constructor section
1522 pointing at the symbol in the set vector specified. */
1523 reloc->relent.addend = cache_ptr->symbol.value;
1524 cache_ptr->symbol.section = into_section;
1525 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
1527 /* We modify the symbol to belong to a section depending upon
1528 the name of the symbol, and add to the size of the section
1529 to contain a pointer to the symbol. Build a reloc entry to
1530 relocate to this symbol attached to this section. */
1531 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
1533 section->reloc_count++;
1534 section->alignment_power = 2;
1536 reloc->next = section->constructor_chain;
1537 section->constructor_chain = reloc;
1538 reloc->relent.address = section->_raw_size;
1539 section->_raw_size += BYTES_IN_WORD;
1541 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
1545 switch (cache_ptr->type & N_TYPE)
1548 cache_ptr->symbol.section = bfd_abs_section_ptr;
1551 cache_ptr->symbol.section = obj_textsec (abfd);
1554 cache_ptr->symbol.section = obj_datasec (abfd);
1557 cache_ptr->symbol.section = obj_bsssec (abfd);
1561 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1566 /* This symbol is the text of a warning message. The next
1567 symbol is the symbol to associate the warning with. If a
1568 reference is made to that symbol, a warning is issued. */
1569 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1570 cache_ptr->symbol.section = bfd_abs_section_ptr;
1573 case N_INDR: case N_INDR | N_EXT:
1574 /* An indirect symbol. This consists of two symbols in a row.
1575 The first symbol is the name of the indirection. The second
1576 symbol is the name of the target. A reference to the first
1577 symbol becomes a reference to the second. */
1578 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1579 cache_ptr->symbol.section = bfd_ind_section_ptr;
1583 cache_ptr->symbol.section = bfd_und_section_ptr;
1584 cache_ptr->symbol.flags = BSF_WEAK;
1588 cache_ptr->symbol.section = bfd_abs_section_ptr;
1589 cache_ptr->symbol.flags = BSF_WEAK;
1593 cache_ptr->symbol.section = obj_textsec (abfd);
1594 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1595 cache_ptr->symbol.flags = BSF_WEAK;
1599 cache_ptr->symbol.section = obj_datasec (abfd);
1600 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1601 cache_ptr->symbol.flags = BSF_WEAK;
1605 cache_ptr->symbol.section = obj_bsssec (abfd);
1606 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1607 cache_ptr->symbol.flags = BSF_WEAK;
1614 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1617 translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
1620 struct external_nlist *sym_pointer;
1622 bfd_vma value = cache_ptr->value;
1626 /* Mask out any existing type bits in case copying from one section
1628 sym_pointer->e_type[0] &= ~N_TYPE;
1630 sec = bfd_get_section (cache_ptr);
1635 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1637 (*_bfd_error_handler)
1638 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
1639 bfd_get_filename (abfd),
1640 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1641 bfd_set_error (bfd_error_nonrepresentable_section);
1645 if (sec->output_section != NULL)
1647 off = sec->output_offset;
1648 sec = sec->output_section;
1651 if (bfd_is_abs_section (sec))
1652 sym_pointer->e_type[0] |= N_ABS;
1653 else if (sec == obj_textsec (abfd))
1654 sym_pointer->e_type[0] |= N_TEXT;
1655 else if (sec == obj_datasec (abfd))
1656 sym_pointer->e_type[0] |= N_DATA;
1657 else if (sec == obj_bsssec (abfd))
1658 sym_pointer->e_type[0] |= N_BSS;
1659 else if (bfd_is_und_section (sec))
1660 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1661 else if (bfd_is_ind_section (sec))
1662 sym_pointer->e_type[0] = N_INDR;
1663 else if (bfd_is_com_section (sec))
1664 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1667 (*_bfd_error_handler)
1668 (_("%s: can not represent section `%s' in a.out object file format"),
1669 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1670 bfd_set_error (bfd_error_nonrepresentable_section);
1674 /* Turn the symbol from section relative to absolute again */
1675 value += sec->vma + off;
1677 if ((cache_ptr->flags & BSF_WARNING) != 0)
1678 sym_pointer->e_type[0] = N_WARNING;
1680 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1681 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1682 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1683 sym_pointer->e_type[0] |= N_EXT;
1684 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1685 sym_pointer->e_type[0] &= ~N_EXT;
1687 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1689 int type = ((aout_symbol_type *) cache_ptr)->type;
1692 case N_ABS: type = N_SETA; break;
1693 case N_TEXT: type = N_SETT; break;
1694 case N_DATA: type = N_SETD; break;
1695 case N_BSS: type = N_SETB; break;
1697 sym_pointer->e_type[0] = type;
1700 if ((cache_ptr->flags & BSF_WEAK) != 0)
1704 switch (sym_pointer->e_type[0] & N_TYPE)
1707 case N_ABS: type = N_WEAKA; break;
1708 case N_TEXT: type = N_WEAKT; break;
1709 case N_DATA: type = N_WEAKD; break;
1710 case N_BSS: type = N_WEAKB; break;
1711 case N_UNDF: type = N_WEAKU; break;
1713 sym_pointer->e_type[0] = type;
1716 PUT_WORD(abfd, value, sym_pointer->e_value);
1721 /* Native-level interface to symbols. */
1724 NAME(aout,make_empty_symbol) (abfd)
1727 aout_symbol_type *new =
1728 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
1731 new->symbol.the_bfd = abfd;
1733 return &new->symbol;
1736 /* Translate a set of internal symbols into external symbols. */
1739 NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
1741 aout_symbol_type *in;
1742 struct external_nlist *ext;
1743 bfd_size_type count;
1745 bfd_size_type strsize;
1748 struct external_nlist *ext_end;
1750 ext_end = ext + count;
1751 for (; ext < ext_end; ext++, in++)
1755 x = GET_WORD (abfd, ext->e_strx);
1756 in->symbol.the_bfd = abfd;
1758 /* For the normal symbols, the zero index points at the number
1759 of bytes in the string table but is to be interpreted as the
1760 null string. For the dynamic symbols, the number of bytes in
1761 the string table is stored in the __DYNAMIC structure and the
1762 zero index points at an actual string. */
1763 if (x == 0 && ! dynamic)
1764 in->symbol.name = "";
1765 else if (x < strsize)
1766 in->symbol.name = str + x;
1770 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1771 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1772 in->other = bfd_h_get_8 (abfd, ext->e_other);
1773 in->type = bfd_h_get_8 (abfd, ext->e_type);
1774 in->symbol.udata.p = NULL;
1776 if (! translate_from_native_sym_flags (abfd, in))
1780 in->symbol.flags |= BSF_DYNAMIC;
1786 /* We read the symbols into a buffer, which is discarded when this
1787 function exits. We read the strings into a buffer large enough to
1788 hold them all plus all the cached symbol entries. */
1791 NAME(aout,slurp_symbol_table) (abfd)
1794 struct external_nlist *old_external_syms;
1795 aout_symbol_type *cached;
1798 /* If there's no work to be done, don't do any */
1799 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1802 old_external_syms = obj_aout_external_syms (abfd);
1804 if (! aout_get_external_symbols (abfd))
1807 cached_size = (obj_aout_external_sym_count (abfd)
1808 * sizeof (aout_symbol_type));
1809 cached = (aout_symbol_type *) bfd_malloc (cached_size);
1810 if (cached == NULL && cached_size != 0)
1812 if (cached_size != 0)
1813 memset (cached, 0, cached_size);
1815 /* Convert from external symbol information to internal. */
1816 if (! (NAME(aout,translate_symbol_table)
1818 obj_aout_external_syms (abfd),
1819 obj_aout_external_sym_count (abfd),
1820 obj_aout_external_strings (abfd),
1821 obj_aout_external_string_size (abfd),
1828 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1830 obj_aout_symbols (abfd) = cached;
1832 /* It is very likely that anybody who calls this function will not
1833 want the external symbol information, so if it was allocated
1834 because of our call to aout_get_external_symbols, we free it up
1835 right away to save space. */
1836 if (old_external_syms == (struct external_nlist *) NULL
1837 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1840 bfd_free_window (&obj_aout_sym_window (abfd));
1842 free (obj_aout_external_syms (abfd));
1844 obj_aout_external_syms (abfd) = NULL;
1850 /* We use a hash table when writing out symbols so that we only write
1851 out a particular string once. This helps particularly when the
1852 linker writes out stabs debugging entries, because each different
1853 contributing object file tends to have many duplicate stabs
1856 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1857 if BFD_TRADITIONAL_FORMAT is set. */
1859 static bfd_size_type add_to_stringtab
1860 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1861 static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
1863 /* Get the index of a string in a strtab, adding it if it is not
1866 static INLINE bfd_size_type
1867 add_to_stringtab (abfd, tab, str, copy)
1869 struct bfd_strtab_hash *tab;
1874 bfd_size_type index;
1876 /* An index of 0 always means the empty string. */
1877 if (str == 0 || *str == '\0')
1880 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1881 doesn't understand a hashed string table. */
1883 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1886 index = _bfd_stringtab_add (tab, str, hash, copy);
1888 if (index != (bfd_size_type) -1)
1890 /* Add BYTES_IN_WORD to the return value to account for the
1891 space taken up by the string table size. */
1892 index += BYTES_IN_WORD;
1898 /* Write out a strtab. ABFD is already at the right location in the
1902 emit_stringtab (abfd, tab)
1904 struct bfd_strtab_hash *tab;
1906 bfd_byte buffer[BYTES_IN_WORD];
1908 /* The string table starts with the size. */
1909 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
1910 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1913 return _bfd_stringtab_emit (abfd, tab);
1917 NAME(aout,write_syms) (abfd)
1920 unsigned int count ;
1921 asymbol **generic = bfd_get_outsymbols (abfd);
1922 struct bfd_strtab_hash *strtab;
1924 strtab = _bfd_stringtab_init ();
1928 for (count = 0; count < bfd_get_symcount (abfd); count++)
1930 asymbol *g = generic[count];
1932 struct external_nlist nsp;
1934 indx = add_to_stringtab (abfd, strtab, g->name, false);
1935 if (indx == (bfd_size_type) -1)
1937 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1939 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1941 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1942 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1943 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1947 bfd_h_put_16(abfd,0, nsp.e_desc);
1948 bfd_h_put_8(abfd, 0, nsp.e_other);
1949 bfd_h_put_8(abfd, 0, nsp.e_type);
1952 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1955 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1956 != EXTERNAL_NLIST_SIZE)
1959 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1960 here, at the end. */
1964 if (! emit_stringtab (abfd, strtab))
1967 _bfd_stringtab_free (strtab);
1972 _bfd_stringtab_free (strtab);
1978 NAME(aout,get_symtab) (abfd, location)
1982 unsigned int counter = 0;
1983 aout_symbol_type *symbase;
1985 if (!NAME(aout,slurp_symbol_table)(abfd))
1988 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1989 *(location++) = (asymbol *)( symbase++);
1991 return bfd_get_symcount (abfd);
1995 /* Standard reloc stuff */
1996 /* Output standard relocation information to a file in target byte order. */
1998 extern void NAME(aout,swap_std_reloc_out)
1999 PARAMS ((bfd *, arelent *, struct reloc_std_external *));
2002 NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
2005 struct reloc_std_external *natptr;
2008 asymbol *sym = *(g->sym_ptr_ptr);
2010 unsigned int r_length;
2012 int r_baserel, r_jmptable, r_relative;
2013 asection *output_section = sym->section->output_section;
2015 PUT_WORD(abfd, g->address, natptr->r_address);
2017 r_length = g->howto->size ; /* Size as a power of two */
2018 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
2019 /* XXX This relies on relocs coming from a.out files. */
2020 r_baserel = (g->howto->type & 8) != 0;
2021 r_jmptable = (g->howto->type & 16) != 0;
2022 r_relative = (g->howto->type & 32) != 0;
2025 /* For a standard reloc, the addend is in the object file. */
2026 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
2029 /* name was clobbered by aout_write_syms to be symbol index */
2031 /* If this relocation is relative to a symbol then set the
2032 r_index to the symbols index, and the r_extern bit.
2034 Absolute symbols can come in in two ways, either as an offset
2035 from the abs section, or as a symbol which has an abs value.
2040 if (bfd_is_com_section (output_section)
2041 || bfd_is_abs_section (output_section)
2042 || bfd_is_und_section (output_section))
2044 if (bfd_abs_section_ptr->symbol == sym)
2046 /* Whoops, looked like an abs symbol, but is really an offset
2047 from the abs section */
2053 /* Fill in symbol */
2055 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2061 /* Just an ordinary section */
2063 r_index = output_section->target_index;
2066 /* now the fun stuff */
2067 if (bfd_header_big_endian (abfd)) {
2068 natptr->r_index[0] = r_index >> 16;
2069 natptr->r_index[1] = r_index >> 8;
2070 natptr->r_index[2] = r_index;
2072 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
2073 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
2074 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
2075 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
2076 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
2077 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
2079 natptr->r_index[2] = r_index >> 16;
2080 natptr->r_index[1] = r_index >> 8;
2081 natptr->r_index[0] = r_index;
2083 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
2084 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
2085 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
2086 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
2087 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
2088 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
2093 /* Extended stuff */
2094 /* Output extended relocation information to a file in target byte order. */
2096 extern void NAME(aout,swap_ext_reloc_out)
2097 PARAMS ((bfd *, arelent *, struct reloc_ext_external *));
2100 NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2103 register struct reloc_ext_external *natptr;
2107 unsigned int r_type;
2108 unsigned int r_addend;
2109 asymbol *sym = *(g->sym_ptr_ptr);
2110 asection *output_section = sym->section->output_section;
2112 PUT_WORD (abfd, g->address, natptr->r_address);
2114 r_type = (unsigned int) g->howto->type;
2116 r_addend = g->addend;
2117 if ((sym->flags & BSF_SECTION_SYM) != 0)
2118 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2120 /* If this relocation is relative to a symbol then set the
2121 r_index to the symbols index, and the r_extern bit.
2123 Absolute symbols can come in in two ways, either as an offset
2124 from the abs section, or as a symbol which has an abs value.
2125 check for that here. */
2127 if (bfd_is_abs_section (bfd_get_section (sym)))
2132 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2134 if (bfd_is_und_section (bfd_get_section (sym))
2135 || (sym->flags & BSF_GLOBAL) != 0)
2139 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2143 /* Just an ordinary section */
2145 r_index = output_section->target_index;
2148 /* now the fun stuff */
2149 if (bfd_header_big_endian (abfd)) {
2150 natptr->r_index[0] = r_index >> 16;
2151 natptr->r_index[1] = r_index >> 8;
2152 natptr->r_index[2] = r_index;
2154 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2155 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2157 natptr->r_index[2] = r_index >> 16;
2158 natptr->r_index[1] = r_index >> 8;
2159 natptr->r_index[0] = r_index;
2161 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2162 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2165 PUT_WORD (abfd, r_addend, natptr->r_addend);
2168 /* BFD deals internally with all things based from the section they're
2169 in. so, something in 10 bytes into a text section with a base of
2170 50 would have a symbol (.text+10) and know .text vma was 50.
2172 Aout keeps all it's symbols based from zero, so the symbol would
2173 contain 60. This macro subs the base of each section from the value
2174 to give the true offset from the section */
2177 #define MOVE_ADDRESS(ad) \
2179 /* undefined symbol */ \
2180 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2181 cache_ptr->addend = ad; \
2183 /* defined, section relative. replace symbol with pointer to \
2184 symbol which points to section */ \
2185 switch (r_index) { \
2187 case N_TEXT | N_EXT: \
2188 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
2189 cache_ptr->addend = ad - su->textsec->vma; \
2192 case N_DATA | N_EXT: \
2193 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
2194 cache_ptr->addend = ad - su->datasec->vma; \
2197 case N_BSS | N_EXT: \
2198 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
2199 cache_ptr->addend = ad - su->bsssec->vma; \
2203 case N_ABS | N_EXT: \
2204 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2205 cache_ptr->addend = ad; \
2211 NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
2213 struct reloc_ext_external *bytes;
2216 bfd_size_type symcount;
2218 unsigned int r_index;
2220 unsigned int r_type;
2221 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2223 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2225 /* now the fun stuff */
2226 if (bfd_header_big_endian (abfd)) {
2227 r_index = (bytes->r_index[0] << 16)
2228 | (bytes->r_index[1] << 8)
2229 | bytes->r_index[2];
2230 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2231 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2232 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2234 r_index = (bytes->r_index[2] << 16)
2235 | (bytes->r_index[1] << 8)
2236 | bytes->r_index[0];
2237 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2238 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2239 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2242 cache_ptr->howto = howto_table_ext + r_type;
2244 /* Base relative relocs are always against the symbol table,
2245 regardless of the setting of r_extern. r_extern just reflects
2246 whether the symbol the reloc is against is local or global. */
2247 if (r_type == RELOC_BASE10
2248 || r_type == RELOC_BASE13
2249 || r_type == RELOC_BASE22)
2252 if (r_extern && r_index > symcount)
2254 /* We could arrange to return an error, but it might be useful
2255 to see the file even if it is bad. */
2260 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
2264 NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
2266 struct reloc_std_external *bytes;
2269 bfd_size_type symcount;
2271 unsigned int r_index;
2273 unsigned int r_length;
2275 int r_baserel, r_jmptable, r_relative;
2276 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2277 unsigned int howto_idx;
2279 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
2281 /* now the fun stuff */
2282 if (bfd_header_big_endian (abfd)) {
2283 r_index = (bytes->r_index[0] << 16)
2284 | (bytes->r_index[1] << 8)
2285 | bytes->r_index[2];
2286 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2287 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2288 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2289 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2290 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2291 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2292 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2294 r_index = (bytes->r_index[2] << 16)
2295 | (bytes->r_index[1] << 8)
2296 | bytes->r_index[0];
2297 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2298 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2299 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2300 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2301 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2302 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2303 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2306 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2307 + 16 * r_jmptable + 32 * r_relative;
2308 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2309 cache_ptr->howto = howto_table_std + howto_idx;
2310 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
2312 /* Base relative relocs are always against the symbol table,
2313 regardless of the setting of r_extern. r_extern just reflects
2314 whether the symbol the reloc is against is local or global. */
2318 if (r_extern && r_index > symcount)
2320 /* We could arrange to return an error, but it might be useful
2321 to see the file even if it is bad. */
2329 /* Read and swap the relocs for a section. */
2332 NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2338 bfd_size_type reloc_size;
2340 arelent *reloc_cache;
2342 unsigned int counter = 0;
2345 if (asect->relocation)
2348 if (asect->flags & SEC_CONSTRUCTOR)
2351 if (asect == obj_datasec (abfd))
2352 reloc_size = exec_hdr(abfd)->a_drsize;
2353 else if (asect == obj_textsec (abfd))
2354 reloc_size = exec_hdr(abfd)->a_trsize;
2355 else if (asect == obj_bsssec (abfd))
2359 bfd_set_error (bfd_error_invalid_operation);
2363 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2366 each_size = obj_reloc_entry_size (abfd);
2368 count = reloc_size / each_size;
2370 reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent)));
2371 if (reloc_cache == NULL && count != 0)
2373 memset (reloc_cache, 0, count * sizeof (arelent));
2375 relocs = bfd_malloc ((size_t) reloc_size);
2376 if (relocs == NULL && reloc_size != 0)
2382 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2389 cache_ptr = reloc_cache;
2390 if (each_size == RELOC_EXT_SIZE)
2392 register struct reloc_ext_external *rptr =
2393 (struct reloc_ext_external *) relocs;
2395 for (; counter < count; counter++, rptr++, cache_ptr++)
2396 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
2397 bfd_get_symcount (abfd));
2401 register struct reloc_std_external *rptr =
2402 (struct reloc_std_external *) relocs;
2404 for (; counter < count; counter++, rptr++, cache_ptr++)
2405 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2406 bfd_get_symcount (abfd));
2411 asect->relocation = reloc_cache;
2412 asect->reloc_count = cache_ptr - reloc_cache;
2417 /* Write out a relocation section into an object file. */
2420 NAME(aout,squirt_out_relocs) (abfd, section)
2425 unsigned char *native, *natptr;
2428 unsigned int count = section->reloc_count;
2431 if (count == 0 || section->orelocation == NULL)
2434 each_size = obj_reloc_entry_size (abfd);
2435 natsize = each_size * count;
2436 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2440 generic = section->orelocation;
2442 if (each_size == RELOC_EXT_SIZE)
2444 for (natptr = native;
2446 --count, natptr += each_size, ++generic)
2447 MY_swap_ext_reloc_out (abfd, *generic,
2448 (struct reloc_ext_external *) natptr);
2452 for (natptr = native;
2454 --count, natptr += each_size, ++generic)
2455 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
2458 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2459 bfd_release(abfd, native);
2462 bfd_release (abfd, native);
2467 /* This is stupid. This function should be a boolean predicate */
2469 NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2475 arelent *tblptr = section->relocation;
2478 if (section == obj_bsssec (abfd))
2484 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
2487 if (section->flags & SEC_CONSTRUCTOR) {
2488 arelent_chain *chain = section->constructor_chain;
2489 for (count = 0; count < section->reloc_count; count ++) {
2490 *relptr ++ = &chain->relent;
2491 chain = chain->next;
2495 tblptr = section->relocation;
2497 for (count = 0; count++ < section->reloc_count;)
2499 *relptr++ = tblptr++;
2504 return section->reloc_count;
2508 NAME(aout,get_reloc_upper_bound) (abfd, asect)
2512 if (bfd_get_format (abfd) != bfd_object) {
2513 bfd_set_error (bfd_error_invalid_operation);
2516 if (asect->flags & SEC_CONSTRUCTOR) {
2517 return (sizeof (arelent *) * (asect->reloc_count+1));
2520 if (asect == obj_datasec (abfd))
2521 return (sizeof (arelent *)
2522 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2525 if (asect == obj_textsec (abfd))
2526 return (sizeof (arelent *)
2527 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2530 if (asect == obj_bsssec (abfd))
2531 return sizeof (arelent *);
2533 if (asect == obj_bsssec (abfd))
2536 bfd_set_error (bfd_error_invalid_operation);
2542 NAME(aout,get_symtab_upper_bound) (abfd)
2545 if (!NAME(aout,slurp_symbol_table)(abfd))
2548 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;
2562 NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2563 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2567 bfd_symbol_info (symbol, ret);
2569 if (ret->type == '?')
2571 int type_code = aout_symbol(symbol)->type & 0xff;
2572 const char *stab_name = bfd_get_stab_name (type_code);
2573 static char buf[10];
2575 if (stab_name == NULL)
2577 sprintf(buf, "(%d)", type_code);
2581 ret->stab_type = type_code;
2582 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2583 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2584 ret->stab_name = stab_name;
2590 NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2591 bfd *ignore_abfd ATTRIBUTE_UNUSED;
2594 bfd_print_symbol_type how;
2596 FILE *file = (FILE *)afile;
2599 case bfd_print_symbol_name:
2601 fprintf(file,"%s", symbol->name);
2603 case bfd_print_symbol_more:
2604 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2605 (unsigned)(aout_symbol(symbol)->other & 0xff),
2606 (unsigned)(aout_symbol(symbol)->type));
2608 case bfd_print_symbol_all:
2610 CONST char *section_name = symbol->section->name;
2613 bfd_print_symbol_vandf((PTR)file,symbol);
2615 fprintf(file," %-5s %04x %02x %02x",
2617 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2618 (unsigned)(aout_symbol(symbol)->other & 0xff),
2619 (unsigned)(aout_symbol(symbol)->type & 0xff));
2621 fprintf(file," %s", symbol->name);
2627 /* If we don't have to allocate more than 1MB to hold the generic
2628 symbols, we use the generic minisymbol methord: it's faster, since
2629 it only translates the symbols once, not multiple times. */
2630 #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2632 /* Read minisymbols. For minisymbols, we use the unmodified a.out
2633 symbols. The minisymbol_to_symbol function translates these into
2634 BFD asymbol structures. */
2637 NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2641 unsigned int *sizep;
2645 /* We could handle the dynamic symbols here as well, but it's
2646 easier to hand them off. */
2647 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2650 if (! aout_get_external_symbols (abfd))
2653 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2654 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2656 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2658 /* By passing the external symbols back from this routine, we are
2659 giving up control over the memory block. Clear
2660 obj_aout_external_syms, so that we do not try to free it
2662 obj_aout_external_syms (abfd) = NULL;
2664 *sizep = EXTERNAL_NLIST_SIZE;
2665 return obj_aout_external_sym_count (abfd);
2668 /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2669 unmodified a.out symbol. The SYM argument is a structure returned
2670 by bfd_make_empty_symbol, which we fill in here. */
2673 NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2680 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2681 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2683 memset (sym, 0, sizeof (aout_symbol_type));
2685 /* We call translate_symbol_table to translate a single symbol. */
2686 if (! (NAME(aout,translate_symbol_table)
2688 (aout_symbol_type *) sym,
2689 (struct external_nlist *) minisym,
2691 obj_aout_external_strings (abfd),
2692 obj_aout_external_string_size (abfd),
2700 provided a BFD, a section and an offset into the section, calculate
2701 and return the name of the source file and the line nearest to the
2706 NAME(aout,find_nearest_line)
2707 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2712 CONST char **filename_ptr;
2713 CONST char **functionname_ptr;
2714 unsigned int *line_ptr;
2716 /* Run down the file looking for the filename, function and linenumber */
2718 CONST char *directory_name = NULL;
2719 CONST char *main_file_name = NULL;
2720 CONST char *current_file_name = NULL;
2721 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
2722 CONST char *line_directory_name = NULL; /* Value of directory_name at line number. */
2723 bfd_vma low_line_vma = 0;
2724 bfd_vma low_func_vma = 0;
2726 size_t filelen, funclen;
2729 *filename_ptr = abfd->filename;
2730 *functionname_ptr = 0;
2732 if (symbols != (asymbol **)NULL) {
2733 for (p = symbols; *p; p++) {
2734 aout_symbol_type *q = (aout_symbol_type *)(*p);
2738 /* If this looks like a file name symbol, and it comes after
2739 the line number we have found so far, but before the
2740 offset, then we have probably not found the right line
2742 if (q->symbol.value <= offset
2743 && ((q->symbol.value > low_line_vma
2744 && (line_file_name != NULL
2746 || (q->symbol.value > low_func_vma
2749 const char *symname;
2751 symname = q->symbol.name;
2752 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2754 if (q->symbol.value > low_line_vma)
2757 line_file_name = NULL;
2759 if (q->symbol.value > low_func_vma)
2766 /* If this symbol is less than the offset, but greater than
2767 the line number we have found so far, then we have not
2768 found the right line number. */
2769 if (q->symbol.value <= offset)
2771 if (q->symbol.value > low_line_vma)
2774 line_file_name = NULL;
2776 if (q->symbol.value > low_func_vma)
2780 main_file_name = current_file_name = q->symbol.name;
2781 /* Look ahead to next symbol to check if that too is an N_SO. */
2785 q = (aout_symbol_type *)(*p);
2786 if (q->type != (int)N_SO)
2789 /* Found a second N_SO First is directory; second is filename. */
2790 directory_name = current_file_name;
2791 main_file_name = current_file_name = q->symbol.name;
2792 if (obj_textsec(abfd) != section)
2796 current_file_name = q->symbol.name;
2803 /* We'll keep this if it resolves nearer than the one we have
2805 if (q->symbol.value >= low_line_vma
2806 && q->symbol.value <= offset)
2808 *line_ptr = q->desc;
2809 low_line_vma = q->symbol.value;
2810 line_file_name = current_file_name;
2811 line_directory_name = directory_name;
2816 /* We'll keep this if it is nearer than the one we have already */
2817 if (q->symbol.value >= low_func_vma &&
2818 q->symbol.value <= offset) {
2819 low_func_vma = q->symbol.value;
2820 func = (asymbol *)q;
2822 else if (q->symbol.value > offset)
2833 main_file_name = line_file_name;
2834 directory_name = line_directory_name;
2837 if (main_file_name == NULL
2838 || IS_ABSOLUTE_PATH (main_file_name)
2839 || directory_name == NULL)
2842 filelen = strlen (directory_name) + strlen (main_file_name);
2846 funclen = strlen (bfd_asymbol_name (func));
2848 if (adata (abfd).line_buf != NULL)
2849 free (adata (abfd).line_buf);
2850 if (filelen + funclen == 0)
2851 adata (abfd).line_buf = buf = NULL;
2854 buf = (char *) bfd_malloc (filelen + funclen + 3);
2855 adata (abfd).line_buf = buf;
2860 if (main_file_name != NULL)
2862 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
2863 *filename_ptr = main_file_name;
2866 sprintf (buf, "%s%s", directory_name, main_file_name);
2867 *filename_ptr = buf;
2874 const char *function = func->name;
2877 /* The caller expects a symbol name. We actually have a
2878 function name, without the leading underscore. Put the
2879 underscore back in, so that the caller gets a symbol name. */
2880 if (bfd_get_symbol_leading_char (abfd) == '\0')
2881 strcpy (buf, function);
2884 buf[0] = bfd_get_symbol_leading_char (abfd);
2885 strcpy (buf + 1, function);
2887 /* Have to remove : stuff */
2888 p = strchr (buf, ':');
2891 *functionname_ptr = buf;
2899 NAME(aout,sizeof_headers) (abfd, execable)
2901 boolean execable ATTRIBUTE_UNUSED;
2903 return adata(abfd).exec_bytes_size;
2906 /* Free all information we have cached for this BFD. We can always
2907 read it again later if we need it. */
2910 NAME(aout,bfd_free_cached_info) (abfd)
2915 if (bfd_get_format (abfd) != bfd_object)
2918 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2919 BFCI_FREE (obj_aout_symbols (abfd));
2921 obj_aout_external_syms (abfd) = 0;
2922 bfd_free_window (&obj_aout_sym_window (abfd));
2923 bfd_free_window (&obj_aout_string_window (abfd));
2924 obj_aout_external_strings (abfd) = 0;
2926 BFCI_FREE (obj_aout_external_syms (abfd));
2927 BFCI_FREE (obj_aout_external_strings (abfd));
2929 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
2930 BFCI_FREE (o->relocation);
2936 /* a.out link code. */
2938 static boolean aout_link_add_object_symbols
2939 PARAMS ((bfd *, struct bfd_link_info *));
2940 static boolean aout_link_check_archive_element
2941 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
2942 static boolean aout_link_free_symbols PARAMS ((bfd *));
2943 static boolean aout_link_check_ar_symbols
2944 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2945 static boolean aout_link_add_symbols
2946 PARAMS ((bfd *, struct bfd_link_info *));
2948 /* Routine to create an entry in an a.out link hash table. */
2950 struct bfd_hash_entry *
2951 NAME(aout,link_hash_newfunc) (entry, table, string)
2952 struct bfd_hash_entry *entry;
2953 struct bfd_hash_table *table;
2956 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2958 /* Allocate the structure if it has not already been allocated by a
2960 if (ret == (struct aout_link_hash_entry *) NULL)
2961 ret = ((struct aout_link_hash_entry *)
2962 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
2963 if (ret == (struct aout_link_hash_entry *) NULL)
2964 return (struct bfd_hash_entry *) ret;
2966 /* Call the allocation method of the superclass. */
2967 ret = ((struct aout_link_hash_entry *)
2968 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2972 /* Set local fields. */
2973 ret->written = false;
2977 return (struct bfd_hash_entry *) ret;
2980 /* Initialize an a.out link hash table. */
2983 NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2984 struct aout_link_hash_table *table;
2986 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2987 struct bfd_hash_table *,
2990 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2993 /* Create an a.out link hash table. */
2995 struct bfd_link_hash_table *
2996 NAME(aout,link_hash_table_create) (abfd)
2999 struct aout_link_hash_table *ret;
3001 ret = ((struct aout_link_hash_table *)
3002 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
3004 return (struct bfd_link_hash_table *) NULL;
3005 if (! NAME(aout,link_hash_table_init) (ret, abfd,
3006 NAME(aout,link_hash_newfunc)))
3009 return (struct bfd_link_hash_table *) NULL;
3014 /* Given an a.out BFD, add symbols to the global hash table as
3018 NAME(aout,link_add_symbols) (abfd, info)
3020 struct bfd_link_info *info;
3022 switch (bfd_get_format (abfd))
3025 return aout_link_add_object_symbols (abfd, info);
3027 return _bfd_generic_link_add_archive_symbols
3028 (abfd, info, aout_link_check_archive_element);
3030 bfd_set_error (bfd_error_wrong_format);
3035 /* Add symbols from an a.out object file. */
3038 aout_link_add_object_symbols (abfd, info)
3040 struct bfd_link_info *info;
3042 if (! aout_get_external_symbols (abfd))
3044 if (! aout_link_add_symbols (abfd, info))
3046 if (! info->keep_memory)
3048 if (! aout_link_free_symbols (abfd))
3054 /* Check a single archive element to see if we need to include it in
3055 the link. *PNEEDED is set according to whether this element is
3056 needed in the link or not. This is called from
3057 _bfd_generic_link_add_archive_symbols. */
3060 aout_link_check_archive_element (abfd, info, pneeded)
3062 struct bfd_link_info *info;
3065 if (! aout_get_external_symbols (abfd))
3068 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
3073 if (! aout_link_add_symbols (abfd, info))
3077 if (! info->keep_memory || ! *pneeded)
3079 if (! aout_link_free_symbols (abfd))
3086 /* Free up the internal symbols read from an a.out file. */
3089 aout_link_free_symbols (abfd)
3092 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
3095 bfd_free_window (&obj_aout_sym_window (abfd));
3097 free ((PTR) obj_aout_external_syms (abfd));
3099 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
3101 if (obj_aout_external_strings (abfd) != (char *) NULL)
3104 bfd_free_window (&obj_aout_string_window (abfd));
3106 free ((PTR) obj_aout_external_strings (abfd));
3108 obj_aout_external_strings (abfd) = (char *) NULL;
3113 /* Look through the internal symbols to see if this object file should
3114 be included in the link. We should include this object file if it
3115 defines any symbols which are currently undefined. If this object
3116 file defines a common symbol, then we may adjust the size of the
3117 known symbol but we do not include the object file in the link
3118 (unless there is some other reason to include it). */
3121 aout_link_check_ar_symbols (abfd, info, pneeded)
3123 struct bfd_link_info *info;
3126 register struct external_nlist *p;
3127 struct external_nlist *pend;
3132 /* Look through all the symbols. */
3133 p = obj_aout_external_syms (abfd);
3134 pend = p + obj_aout_external_sym_count (abfd);
3135 strings = obj_aout_external_strings (abfd);
3136 for (; p < pend; p++)
3138 int type = bfd_h_get_8 (abfd, p->e_type);
3140 struct bfd_link_hash_entry *h;
3142 /* Ignore symbols that are not externally visible. This is an
3143 optimization only, as we check the type more thoroughly
3145 if (((type & N_EXT) == 0
3146 || (type & N_STAB) != 0
3153 if (type == N_WARNING
3159 name = strings + GET_WORD (abfd, p->e_strx);
3160 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3162 /* We are only interested in symbols that are currently
3163 undefined or common. */
3164 if (h == (struct bfd_link_hash_entry *) NULL
3165 || (h->type != bfd_link_hash_undefined
3166 && h->type != bfd_link_hash_common))
3168 if (type == (N_INDR | N_EXT))
3173 if (type == (N_TEXT | N_EXT)
3174 || type == (N_DATA | N_EXT)
3175 || type == (N_BSS | N_EXT)
3176 || type == (N_ABS | N_EXT)
3177 || type == (N_INDR | N_EXT))
3179 /* This object file defines this symbol. We must link it
3180 in. This is true regardless of whether the current
3181 definition of the symbol is undefined or common. If the
3182 current definition is common, we have a case in which we
3183 have already seen an object file including
3185 and this object file from the archive includes
3187 In such a case we must include this object file.
3189 FIXME: The SunOS 4.1.3 linker will pull in the archive
3190 element if the symbol is defined in the .data section,
3191 but not if it is defined in the .text section. That
3192 seems a bit crazy to me, and I haven't implemented it.
3193 However, it might be correct. */
3194 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3200 if (type == (N_UNDF | N_EXT))
3204 value = GET_WORD (abfd, p->e_value);
3207 /* This symbol is common in the object from the archive
3209 if (h->type == bfd_link_hash_undefined)
3214 symbfd = h->u.undef.abfd;
3215 if (symbfd == (bfd *) NULL)
3217 /* This symbol was created as undefined from
3218 outside BFD. We assume that we should link
3219 in the object file. This is done for the -u
3220 option in the linker. */
3221 if (! (*info->callbacks->add_archive_element) (info,
3228 /* Turn the current link symbol into a common
3229 symbol. It is already on the undefs list. */
3230 h->type = bfd_link_hash_common;
3231 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3232 bfd_hash_allocate (&info->hash->table,
3233 sizeof (struct bfd_link_hash_common_entry)));
3234 if (h->u.c.p == NULL)
3237 h->u.c.size = value;
3239 /* FIXME: This isn't quite right. The maximum
3240 alignment of a common symbol should be set by the
3241 architecture of the output file, not of the input
3243 power = bfd_log2 (value);
3244 if (power > bfd_get_arch_info (abfd)->section_align_power)
3245 power = bfd_get_arch_info (abfd)->section_align_power;
3246 h->u.c.p->alignment_power = power;
3248 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3253 /* Adjust the size of the common symbol if
3255 if (value > h->u.c.size)
3256 h->u.c.size = value;
3266 /* This symbol is weak but defined. We must pull it in if
3267 the current link symbol is undefined, but we don't want
3268 it if the current link symbol is common. */
3269 if (h->type == bfd_link_hash_undefined)
3271 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3279 /* We do not need this object file. */
3283 /* Add all symbols from an object file to the hash table. */
3286 aout_link_add_symbols (abfd, info)
3288 struct bfd_link_info *info;
3290 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3291 const char *, flagword, asection *,
3292 bfd_vma, const char *, boolean,
3294 struct bfd_link_hash_entry **));
3295 struct external_nlist *syms;
3296 bfd_size_type sym_count;
3299 struct aout_link_hash_entry **sym_hash;
3300 register struct external_nlist *p;
3301 struct external_nlist *pend;
3303 syms = obj_aout_external_syms (abfd);
3304 sym_count = obj_aout_external_sym_count (abfd);
3305 strings = obj_aout_external_strings (abfd);
3306 if (info->keep_memory)
3311 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3313 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3314 (abfd, info, &syms, &sym_count, &strings)))
3318 /* We keep a list of the linker hash table entries that correspond
3319 to particular symbols. We could just look them up in the hash
3320 table, but keeping the list is more efficient. Perhaps this
3321 should be conditional on info->keep_memory. */
3322 sym_hash = ((struct aout_link_hash_entry **)
3325 * sizeof (struct aout_link_hash_entry *))));
3326 if (sym_hash == NULL && sym_count != 0)
3328 obj_aout_sym_hashes (abfd) = sym_hash;
3330 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3331 if (add_one_symbol == NULL)
3332 add_one_symbol = _bfd_generic_link_add_one_symbol;
3335 pend = p + sym_count;
3336 for (; p < pend; p++, sym_hash++)
3347 type = bfd_h_get_8 (abfd, p->e_type);
3349 /* Ignore debugging symbols. */
3350 if ((type & N_STAB) != 0)
3353 name = strings + GET_WORD (abfd, p->e_strx);
3354 value = GET_WORD (abfd, p->e_value);
3371 /* Ignore symbols that are not externally visible. */
3374 /* Ignore local indirect symbol. */
3379 case N_UNDF | N_EXT:
3382 section = bfd_und_section_ptr;
3386 section = bfd_com_section_ptr;
3389 section = bfd_abs_section_ptr;
3391 case N_TEXT | N_EXT:
3392 section = obj_textsec (abfd);
3393 value -= bfd_get_section_vma (abfd, section);
3395 case N_DATA | N_EXT:
3396 case N_SETV | N_EXT:
3397 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3398 translate_from_native_sym_flags. */
3399 section = obj_datasec (abfd);
3400 value -= bfd_get_section_vma (abfd, section);
3403 section = obj_bsssec (abfd);
3404 value -= bfd_get_section_vma (abfd, section);
3406 case N_INDR | N_EXT:
3407 /* An indirect symbol. The next symbol is the symbol
3408 which this one really is. */
3409 BFD_ASSERT (p + 1 < pend);
3411 string = strings + GET_WORD (abfd, p->e_strx);
3412 section = bfd_ind_section_ptr;
3413 flags |= BSF_INDIRECT;
3415 case N_COMM | N_EXT:
3416 section = bfd_com_section_ptr;
3418 case N_SETA: case N_SETA | N_EXT:
3419 section = bfd_abs_section_ptr;
3420 flags |= BSF_CONSTRUCTOR;
3422 case N_SETT: case N_SETT | N_EXT:
3423 section = obj_textsec (abfd);
3424 flags |= BSF_CONSTRUCTOR;
3425 value -= bfd_get_section_vma (abfd, section);
3427 case N_SETD: case N_SETD | N_EXT:
3428 section = obj_datasec (abfd);
3429 flags |= BSF_CONSTRUCTOR;
3430 value -= bfd_get_section_vma (abfd, section);
3432 case N_SETB: case N_SETB | N_EXT:
3433 section = obj_bsssec (abfd);
3434 flags |= BSF_CONSTRUCTOR;
3435 value -= bfd_get_section_vma (abfd, section);
3438 /* A warning symbol. The next symbol is the one to warn
3440 BFD_ASSERT (p + 1 < pend);
3443 name = strings + GET_WORD (abfd, p->e_strx);
3444 section = bfd_und_section_ptr;
3445 flags |= BSF_WARNING;
3448 section = bfd_und_section_ptr;
3452 section = bfd_abs_section_ptr;
3456 section = obj_textsec (abfd);
3457 value -= bfd_get_section_vma (abfd, section);
3461 section = obj_datasec (abfd);
3462 value -= bfd_get_section_vma (abfd, section);
3466 section = obj_bsssec (abfd);
3467 value -= bfd_get_section_vma (abfd, section);
3472 if (! ((*add_one_symbol)
3473 (info, abfd, name, flags, section, value, string, copy, false,
3474 (struct bfd_link_hash_entry **) sym_hash)))
3477 /* Restrict the maximum alignment of a common symbol based on
3478 the architecture, since a.out has no way to represent
3479 alignment requirements of a section in a .o file. FIXME:
3480 This isn't quite right: it should use the architecture of the
3481 output file, not the input files. */
3482 if ((*sym_hash)->root.type == bfd_link_hash_common
3483 && ((*sym_hash)->root.u.c.p->alignment_power >
3484 bfd_get_arch_info (abfd)->section_align_power))
3485 (*sym_hash)->root.u.c.p->alignment_power =
3486 bfd_get_arch_info (abfd)->section_align_power;
3488 /* If this is a set symbol, and we are not building sets, then
3489 it is possible for the hash entry to not have been set. In
3490 such a case, treat the symbol as not globally defined. */
3491 if ((*sym_hash)->root.type == bfd_link_hash_new)
3493 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3497 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3504 /* A hash table used for header files with N_BINCL entries. */
3506 struct aout_link_includes_table
3508 struct bfd_hash_table root;
3511 /* A linked list of totals that we have found for a particular header
3514 struct aout_link_includes_totals
3516 struct aout_link_includes_totals *next;
3520 /* An entry in the header file hash table. */
3522 struct aout_link_includes_entry
3524 struct bfd_hash_entry root;
3525 /* List of totals we have found for this file. */
3526 struct aout_link_includes_totals *totals;
3529 /* Look up an entry in an the header file hash table. */
3531 #define aout_link_includes_lookup(table, string, create, copy) \
3532 ((struct aout_link_includes_entry *) \
3533 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3535 /* During the final link step we need to pass around a bunch of
3536 information, so we do it in an instance of this structure. */
3538 struct aout_final_link_info
3540 /* General link information. */
3541 struct bfd_link_info *info;
3544 /* Reloc file positions. */
3545 file_ptr treloff, dreloff;
3546 /* File position of symbols. */
3549 struct bfd_strtab_hash *strtab;
3550 /* Header file hash table. */
3551 struct aout_link_includes_table includes;
3552 /* A buffer large enough to hold the contents of any section. */
3554 /* A buffer large enough to hold the relocs of any section. */
3556 /* A buffer large enough to hold the symbol map of any input BFD. */
3558 /* A buffer large enough to hold output symbols of any input BFD. */
3559 struct external_nlist *output_syms;
3562 static struct bfd_hash_entry *aout_link_includes_newfunc
3563 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
3564 static boolean aout_link_input_bfd
3565 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3566 static boolean aout_link_write_symbols
3567 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3568 static boolean aout_link_write_other_symbol
3569 PARAMS ((struct aout_link_hash_entry *, PTR));
3570 static boolean aout_link_input_section
3571 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3572 asection *input_section, file_ptr *reloff_ptr,
3573 bfd_size_type rel_size));
3574 static boolean aout_link_input_section_std
3575 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3576 asection *input_section, struct reloc_std_external *,
3577 bfd_size_type rel_size, bfd_byte *contents));
3578 static boolean aout_link_input_section_ext
3579 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3580 asection *input_section, struct reloc_ext_external *,
3581 bfd_size_type rel_size, bfd_byte *contents));
3582 static INLINE asection *aout_reloc_index_to_section
3583 PARAMS ((bfd *, int));
3584 static boolean aout_link_reloc_link_order
3585 PARAMS ((struct aout_final_link_info *, asection *,
3586 struct bfd_link_order *));
3588 /* The function to create a new entry in the header file hash table. */
3590 static struct bfd_hash_entry *
3591 aout_link_includes_newfunc (entry, table, string)
3592 struct bfd_hash_entry *entry;
3593 struct bfd_hash_table *table;
3596 struct aout_link_includes_entry *ret =
3597 (struct aout_link_includes_entry *) entry;
3599 /* Allocate the structure if it has not already been allocated by a
3601 if (ret == (struct aout_link_includes_entry *) NULL)
3602 ret = ((struct aout_link_includes_entry *)
3603 bfd_hash_allocate (table,
3604 sizeof (struct aout_link_includes_entry)));
3605 if (ret == (struct aout_link_includes_entry *) NULL)
3606 return (struct bfd_hash_entry *) ret;
3608 /* Call the allocation method of the superclass. */
3609 ret = ((struct aout_link_includes_entry *)
3610 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3613 /* Set local fields. */
3617 return (struct bfd_hash_entry *) ret;
3620 /* Do the final link step. This is called on the output BFD. The
3621 INFO structure should point to a list of BFDs linked through the
3622 link_next field which can be used to find each BFD which takes part
3623 in the output. Also, each section in ABFD should point to a list
3624 of bfd_link_order structures which list all the input sections for
3625 the output section. */
3628 NAME(aout,final_link) (abfd, info, callback)
3630 struct bfd_link_info *info;
3631 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3633 struct aout_final_link_info aout_info;
3634 boolean includes_hash_initialized = false;
3636 bfd_size_type trsize, drsize;
3637 size_t max_contents_size;
3638 size_t max_relocs_size;
3639 size_t max_sym_count;
3640 bfd_size_type text_size;
3642 register struct bfd_link_order *p;
3644 boolean have_link_order_relocs;
3647 abfd->flags |= DYNAMIC;
3649 aout_info.info = info;
3650 aout_info.output_bfd = abfd;
3651 aout_info.contents = NULL;
3652 aout_info.relocs = NULL;
3653 aout_info.symbol_map = NULL;
3654 aout_info.output_syms = NULL;
3656 if (! bfd_hash_table_init_n (&aout_info.includes.root,
3657 aout_link_includes_newfunc,
3660 includes_hash_initialized = true;
3662 /* Figure out the largest section size. Also, if generating
3663 relocateable output, count the relocs. */
3666 max_contents_size = 0;
3667 max_relocs_size = 0;
3669 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
3673 if (info->relocateable)
3675 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3677 trsize += exec_hdr (sub)->a_trsize;
3678 drsize += exec_hdr (sub)->a_drsize;
3682 /* FIXME: We need to identify the .text and .data sections
3683 and call get_reloc_upper_bound and canonicalize_reloc to
3684 work out the number of relocs needed, and then multiply
3685 by the reloc size. */
3686 (*_bfd_error_handler)
3687 (_("%s: relocateable link from %s to %s not supported"),
3688 bfd_get_filename (abfd),
3689 sub->xvec->name, abfd->xvec->name);
3690 bfd_set_error (bfd_error_invalid_operation);
3695 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3697 sz = bfd_section_size (sub, obj_textsec (sub));
3698 if (sz > max_contents_size)
3699 max_contents_size = sz;
3700 sz = bfd_section_size (sub, obj_datasec (sub));
3701 if (sz > max_contents_size)
3702 max_contents_size = sz;
3704 sz = exec_hdr (sub)->a_trsize;
3705 if (sz > max_relocs_size)
3706 max_relocs_size = sz;
3707 sz = exec_hdr (sub)->a_drsize;
3708 if (sz > max_relocs_size)
3709 max_relocs_size = sz;
3711 sz = obj_aout_external_sym_count (sub);
3712 if (sz > max_sym_count)
3717 if (info->relocateable)
3719 if (obj_textsec (abfd) != (asection *) NULL)
3720 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3722 * obj_reloc_entry_size (abfd));
3723 if (obj_datasec (abfd) != (asection *) NULL)
3724 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3726 * obj_reloc_entry_size (abfd));
3729 exec_hdr (abfd)->a_trsize = trsize;
3730 exec_hdr (abfd)->a_drsize = drsize;
3732 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3734 /* Adjust the section sizes and vmas according to the magic number.
3735 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3736 filepos for each section. */
3737 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
3740 /* The relocation and symbol file positions differ among a.out
3741 targets. We are passed a callback routine from the backend
3742 specific code to handle this.
3743 FIXME: At this point we do not know how much space the symbol
3744 table will require. This will not work for any (nonstandard)
3745 a.out target that needs to know the symbol table size before it
3746 can compute the relocation file positions. This may or may not
3747 be the case for the hp300hpux target, for example. */
3748 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3750 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3751 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3752 obj_sym_filepos (abfd) = aout_info.symoff;
3754 /* We keep a count of the symbols as we output them. */
3755 obj_aout_external_sym_count (abfd) = 0;
3757 /* We accumulate the string table as we write out the symbols. */
3758 aout_info.strtab = _bfd_stringtab_init ();
3759 if (aout_info.strtab == NULL)
3762 /* Allocate buffers to hold section contents and relocs. */
3763 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
3764 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size);
3765 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *));
3766 aout_info.output_syms = ((struct external_nlist *)
3767 bfd_malloc ((max_sym_count + 1)
3768 * sizeof (struct external_nlist)));
3769 if ((aout_info.contents == NULL && max_contents_size != 0)
3770 || (aout_info.relocs == NULL && max_relocs_size != 0)
3771 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3772 || aout_info.output_syms == NULL)
3775 /* If we have a symbol named __DYNAMIC, force it out now. This is
3776 required by SunOS. Doing this here rather than in sunos.c is a
3777 hack, but it's easier than exporting everything which would be
3780 struct aout_link_hash_entry *h;
3782 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3783 false, false, false);
3785 aout_link_write_other_symbol (h, &aout_info);
3788 /* The most time efficient way to do the link would be to read all
3789 the input object files into memory and then sort out the
3790 information into the output file. Unfortunately, that will
3791 probably use too much memory. Another method would be to step
3792 through everything that composes the text section and write it
3793 out, and then everything that composes the data section and write
3794 it out, and then write out the relocs, and then write out the
3795 symbols. Unfortunately, that requires reading stuff from each
3796 input file several times, and we will not be able to keep all the
3797 input files open simultaneously, and reopening them will be slow.
3799 What we do is basically process one input file at a time. We do
3800 everything we need to do with an input file once--copy over the
3801 section contents, handle the relocation information, and write
3802 out the symbols--and then we throw away the information we read
3803 from it. This approach requires a lot of lseeks of the output
3804 file, which is unfortunate but still faster than reopening a lot
3807 We use the output_has_begun field of the input BFDs to see
3808 whether we have already handled it. */
3809 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3810 sub->output_has_begun = false;
3812 /* Mark all sections which are to be included in the link. This
3813 will normally be every section. We need to do this so that we
3814 can identify any sections which the linker has decided to not
3816 for (o = abfd->sections; o != NULL; o = o->next)
3818 for (p = o->link_order_head; p != NULL; p = p->next)
3820 if (p->type == bfd_indirect_link_order)
3821 p->u.indirect.section->linker_mark = true;
3825 have_link_order_relocs = false;
3826 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3828 for (p = o->link_order_head;
3829 p != (struct bfd_link_order *) NULL;
3832 if (p->type == bfd_indirect_link_order
3833 && (bfd_get_flavour (p->u.indirect.section->owner)
3834 == bfd_target_aout_flavour))
3838 input_bfd = p->u.indirect.section->owner;
3839 if (! input_bfd->output_has_begun)
3841 if (! aout_link_input_bfd (&aout_info, input_bfd))
3843 input_bfd->output_has_begun = true;
3846 else if (p->type == bfd_section_reloc_link_order
3847 || p->type == bfd_symbol_reloc_link_order)
3849 /* These are handled below. */
3850 have_link_order_relocs = true;
3854 if (! _bfd_default_link_order (abfd, info, o, p))
3860 /* Write out any symbols that we have not already written out. */
3861 aout_link_hash_traverse (aout_hash_table (info),
3862 aout_link_write_other_symbol,
3865 /* Now handle any relocs we were asked to create by the linker.
3866 These did not come from any input file. We must do these after
3867 we have written out all the symbols, so that we know the symbol
3869 if (have_link_order_relocs)
3871 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3873 for (p = o->link_order_head;
3874 p != (struct bfd_link_order *) NULL;
3877 if (p->type == bfd_section_reloc_link_order
3878 || p->type == bfd_symbol_reloc_link_order)
3880 if (! aout_link_reloc_link_order (&aout_info, o, p))
3887 if (aout_info.contents != NULL)
3889 free (aout_info.contents);
3890 aout_info.contents = NULL;
3892 if (aout_info.relocs != NULL)
3894 free (aout_info.relocs);
3895 aout_info.relocs = NULL;
3897 if (aout_info.symbol_map != NULL)
3899 free (aout_info.symbol_map);
3900 aout_info.symbol_map = NULL;
3902 if (aout_info.output_syms != NULL)
3904 free (aout_info.output_syms);
3905 aout_info.output_syms = NULL;
3907 if (includes_hash_initialized)
3909 bfd_hash_table_free (&aout_info.includes.root);
3910 includes_hash_initialized = false;
3913 /* Finish up any dynamic linking we may be doing. */
3914 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3916 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
3920 /* Update the header information. */
3921 abfd->symcount = obj_aout_external_sym_count (abfd);
3922 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3923 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3924 obj_textsec (abfd)->reloc_count =
3925 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3926 obj_datasec (abfd)->reloc_count =
3927 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3929 /* Write out the string table, unless there are no symbols. */
3930 if (abfd->symcount > 0)
3932 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
3933 || ! emit_stringtab (abfd, aout_info.strtab))
3936 else if (obj_textsec (abfd)->reloc_count == 0
3937 && obj_datasec (abfd)->reloc_count == 0)
3943 (obj_datasec (abfd)->filepos
3944 + exec_hdr (abfd)->a_data
3947 || bfd_write (&b, 1, 1, abfd) != 1)
3954 if (aout_info.contents != NULL)
3955 free (aout_info.contents);
3956 if (aout_info.relocs != NULL)
3957 free (aout_info.relocs);
3958 if (aout_info.symbol_map != NULL)
3959 free (aout_info.symbol_map);
3960 if (aout_info.output_syms != NULL)
3961 free (aout_info.output_syms);
3962 if (includes_hash_initialized)
3963 bfd_hash_table_free (&aout_info.includes.root);
3967 /* Link an a.out input BFD into the output file. */
3970 aout_link_input_bfd (finfo, input_bfd)
3971 struct aout_final_link_info *finfo;
3974 bfd_size_type sym_count;
3976 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3978 /* If this is a dynamic object, it may need special handling. */
3979 if ((input_bfd->flags & DYNAMIC) != 0
3980 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3982 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3983 (finfo->info, input_bfd));
3986 /* Get the symbols. We probably have them already, unless
3987 finfo->info->keep_memory is false. */
3988 if (! aout_get_external_symbols (input_bfd))
3991 sym_count = obj_aout_external_sym_count (input_bfd);
3993 /* Write out the symbols and get a map of the new indices. The map
3994 is placed into finfo->symbol_map. */
3995 if (! aout_link_write_symbols (finfo, input_bfd))
3998 /* Relocate and write out the sections. These functions use the
3999 symbol map created by aout_link_write_symbols. The linker_mark
4000 field will be set if these sections are to be included in the
4001 link, which will normally be the case. */
4002 if (obj_textsec (input_bfd)->linker_mark)
4004 if (! aout_link_input_section (finfo, input_bfd,
4005 obj_textsec (input_bfd),
4007 exec_hdr (input_bfd)->a_trsize))
4010 if (obj_datasec (input_bfd)->linker_mark)
4012 if (! aout_link_input_section (finfo, input_bfd,
4013 obj_datasec (input_bfd),
4015 exec_hdr (input_bfd)->a_drsize))
4019 /* If we are not keeping memory, we don't need the symbols any
4020 longer. We still need them if we are keeping memory, because the
4021 strings in the hash table point into them. */
4022 if (! finfo->info->keep_memory)
4024 if (! aout_link_free_symbols (input_bfd))
4031 /* Adjust and write out the symbols for an a.out file. Set the new
4032 symbol indices into a symbol_map. */
4035 aout_link_write_symbols (finfo, input_bfd)
4036 struct aout_final_link_info *finfo;
4040 bfd_size_type sym_count;
4042 enum bfd_link_strip strip;
4043 enum bfd_link_discard discard;
4044 struct external_nlist *outsym;
4045 bfd_size_type strtab_index;
4046 register struct external_nlist *sym;
4047 struct external_nlist *sym_end;
4048 struct aout_link_hash_entry **sym_hash;
4053 output_bfd = finfo->output_bfd;
4054 sym_count = obj_aout_external_sym_count (input_bfd);
4055 strings = obj_aout_external_strings (input_bfd);
4056 strip = finfo->info->strip;
4057 discard = finfo->info->discard;
4058 outsym = finfo->output_syms;
4060 /* First write out a symbol for this object file, unless we are
4061 discarding such symbols. */
4062 if (strip != strip_all
4063 && (strip != strip_some
4064 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
4065 false, false) != NULL)
4066 && discard != discard_all)
4068 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
4069 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
4070 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
4071 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4072 input_bfd->filename, false);
4073 if (strtab_index == (bfd_size_type) -1)
4075 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4076 PUT_WORD (output_bfd,
4077 (bfd_get_section_vma (output_bfd,
4078 obj_textsec (input_bfd)->output_section)
4079 + obj_textsec (input_bfd)->output_offset),
4081 ++obj_aout_external_sym_count (output_bfd);
4087 sym = obj_aout_external_syms (input_bfd);
4088 sym_end = sym + sym_count;
4089 sym_hash = obj_aout_sym_hashes (input_bfd);
4090 symbol_map = finfo->symbol_map;
4091 memset (symbol_map, 0, sym_count * sizeof *symbol_map);
4092 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
4096 struct aout_link_hash_entry *h;
4102 /* We set *symbol_map to 0 above for all symbols. If it has
4103 already been set to -1 for this symbol, it means that we are
4104 discarding it because it appears in a duplicate header file.
4105 See the N_BINCL code below. */
4106 if (*symbol_map == -1)
4109 /* Initialize *symbol_map to -1, which means that the symbol was
4110 not copied into the output file. We will change it later if
4111 we do copy the symbol over. */
4114 type = bfd_h_get_8 (input_bfd, sym->e_type);
4115 name = strings + GET_WORD (input_bfd, sym->e_strx);
4121 /* Pass this symbol through. It is the target of an
4122 indirect or warning symbol. */
4123 val = GET_WORD (input_bfd, sym->e_value);
4128 /* Skip this symbol, which is the target of an indirect
4129 symbol that we have changed to no longer be an indirect
4136 struct aout_link_hash_entry *hresolve;
4138 /* We have saved the hash table entry for this symbol, if
4139 there is one. Note that we could just look it up again
4140 in the hash table, provided we first check that it is an
4144 /* Use the name from the hash table, in case the symbol was
4147 name = h->root.root.string;
4149 /* If this is an indirect or warning symbol, then change
4150 hresolve to the base symbol. We also change *sym_hash so
4151 that the relocation routines relocate against the real
4154 if (h != (struct aout_link_hash_entry *) NULL
4155 && (h->root.type == bfd_link_hash_indirect
4156 || h->root.type == bfd_link_hash_warning))
4158 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4159 while (hresolve->root.type == bfd_link_hash_indirect
4160 || hresolve->root.type == bfd_link_hash_warning)
4161 hresolve = ((struct aout_link_hash_entry *)
4162 hresolve->root.u.i.link);
4163 *sym_hash = hresolve;
4166 /* If the symbol has already been written out, skip it. */
4167 if (h != (struct aout_link_hash_entry *) NULL
4168 && h->root.type != bfd_link_hash_warning
4171 if ((type & N_TYPE) == N_INDR
4172 || type == N_WARNING)
4174 *symbol_map = h->indx;
4178 /* See if we are stripping this symbol. */
4184 case strip_debugger:
4185 if ((type & N_STAB) != 0)
4189 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
4199 if (h != (struct aout_link_hash_entry *) NULL)
4204 /* Get the value of the symbol. */
4205 if ((type & N_TYPE) == N_TEXT
4207 symsec = obj_textsec (input_bfd);
4208 else if ((type & N_TYPE) == N_DATA
4210 symsec = obj_datasec (input_bfd);
4211 else if ((type & N_TYPE) == N_BSS
4213 symsec = obj_bsssec (input_bfd);
4214 else if ((type & N_TYPE) == N_ABS
4216 symsec = bfd_abs_section_ptr;
4217 else if (((type & N_TYPE) == N_INDR
4218 && (hresolve == (struct aout_link_hash_entry *) NULL
4219 || (hresolve->root.type != bfd_link_hash_defined
4220 && hresolve->root.type != bfd_link_hash_defweak
4221 && hresolve->root.type != bfd_link_hash_common)))
4222 || type == N_WARNING)
4224 /* Pass the next symbol through unchanged. The
4225 condition above for indirect symbols is so that if
4226 the indirect symbol was defined, we output it with
4227 the correct definition so the debugger will
4230 val = GET_WORD (input_bfd, sym->e_value);
4233 else if ((type & N_STAB) != 0)
4235 val = GET_WORD (input_bfd, sym->e_value);
4240 /* If we get here with an indirect symbol, it means that
4241 we are outputting it with a real definition. In such
4242 a case we do not want to output the next symbol,
4243 which is the target of the indirection. */
4244 if ((type & N_TYPE) == N_INDR)
4249 /* We need to get the value from the hash table. We use
4250 hresolve so that if we have defined an indirect
4251 symbol we output the final definition. */
4252 if (h == (struct aout_link_hash_entry *) NULL)
4254 switch (type & N_TYPE)
4257 symsec = obj_textsec (input_bfd);
4260 symsec = obj_datasec (input_bfd);
4263 symsec = obj_bsssec (input_bfd);
4266 symsec = bfd_abs_section_ptr;
4273 else if (hresolve->root.type == bfd_link_hash_defined
4274 || hresolve->root.type == bfd_link_hash_defweak)
4276 asection *input_section;
4277 asection *output_section;
4279 /* This case usually means a common symbol which was
4280 turned into a defined symbol. */
4281 input_section = hresolve->root.u.def.section;
4282 output_section = input_section->output_section;
4283 BFD_ASSERT (bfd_is_abs_section (output_section)
4284 || output_section->owner == output_bfd);
4285 val = (hresolve->root.u.def.value
4286 + bfd_get_section_vma (output_bfd, output_section)
4287 + input_section->output_offset);
4289 /* Get the correct type based on the section. If
4290 this is a constructed set, force it to be
4291 globally visible. */
4300 if (output_section == obj_textsec (output_bfd))
4301 type |= (hresolve->root.type == bfd_link_hash_defined
4304 else if (output_section == obj_datasec (output_bfd))
4305 type |= (hresolve->root.type == bfd_link_hash_defined
4308 else if (output_section == obj_bsssec (output_bfd))
4309 type |= (hresolve->root.type == bfd_link_hash_defined
4313 type |= (hresolve->root.type == bfd_link_hash_defined
4317 else if (hresolve->root.type == bfd_link_hash_common)
4318 val = hresolve->root.u.c.size;
4319 else if (hresolve->root.type == bfd_link_hash_undefweak)
4327 if (symsec != (asection *) NULL)
4328 val = (symsec->output_section->vma
4329 + symsec->output_offset
4330 + (GET_WORD (input_bfd, sym->e_value)
4333 /* If this is a global symbol set the written flag, and if
4334 it is a local symbol see if we should discard it. */
4335 if (h != (struct aout_link_hash_entry *) NULL)
4338 h->indx = obj_aout_external_sym_count (output_bfd);
4340 else if ((type & N_TYPE) != N_SETT
4341 && (type & N_TYPE) != N_SETD
4342 && (type & N_TYPE) != N_SETB
4343 && (type & N_TYPE) != N_SETA)
4350 if ((type & N_STAB) == 0
4351 && bfd_is_local_label_name (input_bfd, name))
4365 /* An N_BINCL symbol indicates the start of the stabs
4366 entries for a header file. We need to scan ahead to the
4367 next N_EINCL symbol, ignoring nesting, adding up all the
4368 characters in the symbol names, not including the file
4369 numbers in types (the first number after an open
4371 if (type == N_BINCL)
4373 struct external_nlist *incl_sym;
4375 struct aout_link_includes_entry *incl_entry;
4376 struct aout_link_includes_totals *t;
4380 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
4384 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4385 if (incl_type == N_EINCL)
4391 else if (incl_type == N_BINCL)
4397 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
4398 for (; *s != '\0'; s++)
4403 /* Skip the file number. */
4405 while (isdigit ((unsigned char) *s))
4413 /* If we have already included a header file with the
4414 same value, then replace this one with an N_EXCL
4416 copy = ! finfo->info->keep_memory;
4417 incl_entry = aout_link_includes_lookup (&finfo->includes,
4419 if (incl_entry == NULL)
4421 for (t = incl_entry->totals; t != NULL; t = t->next)
4422 if (t->total == val)
4426 /* This is the first time we have seen this header
4427 file with this set of stabs strings. */
4428 t = ((struct aout_link_includes_totals *)
4429 bfd_hash_allocate (&finfo->includes.root,
4434 t->next = incl_entry->totals;
4435 incl_entry->totals = t;
4441 /* This is a duplicate header file. We must change
4442 it to be an N_EXCL entry, and mark all the
4443 included symbols to prevent outputting them. */
4447 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
4449 incl_sym++, incl_map++)
4453 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4454 if (incl_type == N_EINCL)
4463 else if (incl_type == N_BINCL)
4472 /* Copy this symbol into the list of symbols we are going to
4474 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4475 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4477 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4480 if (! finfo->info->keep_memory)
4482 /* name points into a string table which we are going to
4483 free. If there is a hash table entry, use that string.
4484 Otherwise, copy name into memory. */
4485 if (h != (struct aout_link_hash_entry *) NULL)
4486 name = h->root.root.string;
4490 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4492 if (strtab_index == (bfd_size_type) -1)
4494 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4495 PUT_WORD (output_bfd, val, outsym->e_value);
4496 *symbol_map = obj_aout_external_sym_count (output_bfd);
4497 ++obj_aout_external_sym_count (output_bfd);
4501 /* Write out the output symbols we have just constructed. */
4502 if (outsym > finfo->output_syms)
4504 bfd_size_type outsym_count;
4506 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
4508 outsym_count = outsym - finfo->output_syms;
4509 if (bfd_write ((PTR) finfo->output_syms,
4510 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4511 (bfd_size_type) outsym_count, output_bfd)
4512 != outsym_count * EXTERNAL_NLIST_SIZE)
4514 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4520 /* Write out a symbol that was not associated with an a.out input
4524 aout_link_write_other_symbol (h, data)
4525 struct aout_link_hash_entry *h;
4528 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4532 struct external_nlist outsym;
4535 output_bfd = finfo->output_bfd;
4537 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4539 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4540 (output_bfd, finfo->info, h)))
4542 /* FIXME: No way to handle errors. */
4552 /* An indx of -2 means the symbol must be written. */
4554 && (finfo->info->strip == strip_all
4555 || (finfo->info->strip == strip_some
4556 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4557 false, false) == NULL)))
4560 switch (h->root.type)
4564 /* Avoid variable not initialized warnings. */
4566 case bfd_link_hash_new:
4567 /* This can happen for set symbols when sets are not being
4570 case bfd_link_hash_undefined:
4571 type = N_UNDF | N_EXT;
4574 case bfd_link_hash_defined:
4575 case bfd_link_hash_defweak:
4579 sec = h->root.u.def.section->output_section;
4580 BFD_ASSERT (bfd_is_abs_section (sec)
4581 || sec->owner == output_bfd);
4582 if (sec == obj_textsec (output_bfd))
4583 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4584 else if (sec == obj_datasec (output_bfd))
4585 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4586 else if (sec == obj_bsssec (output_bfd))
4587 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4589 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4591 val = (h->root.u.def.value
4593 + h->root.u.def.section->output_offset);
4596 case bfd_link_hash_common:
4597 type = N_UNDF | N_EXT;
4598 val = h->root.u.c.size;
4600 case bfd_link_hash_undefweak:
4603 case bfd_link_hash_indirect:
4604 case bfd_link_hash_warning:
4605 /* FIXME: Ignore these for now. The circumstances under which
4606 they should be written out are not clear to me. */
4610 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4611 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4612 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
4613 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
4615 if (indx == (bfd_size_type) -1)
4617 /* FIXME: No way to handle errors. */
4620 PUT_WORD (output_bfd, indx, outsym.e_strx);
4621 PUT_WORD (output_bfd, val, outsym.e_value);
4623 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4624 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4625 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4627 /* FIXME: No way to handle errors. */
4631 finfo->symoff += EXTERNAL_NLIST_SIZE;
4632 h->indx = obj_aout_external_sym_count (output_bfd);
4633 ++obj_aout_external_sym_count (output_bfd);
4638 /* Link an a.out section into the output file. */
4641 aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
4643 struct aout_final_link_info *finfo;
4645 asection *input_section;
4646 file_ptr *reloff_ptr;
4647 bfd_size_type rel_size;
4649 bfd_size_type input_size;
4652 /* Get the section contents. */
4653 input_size = bfd_section_size (input_bfd, input_section);
4654 if (! bfd_get_section_contents (input_bfd, input_section,
4655 (PTR) finfo->contents,
4656 (file_ptr) 0, input_size))
4659 /* Read in the relocs if we haven't already done it. */
4660 if (aout_section_data (input_section) != NULL
4661 && aout_section_data (input_section)->relocs != NULL)
4662 relocs = aout_section_data (input_section)->relocs;
4665 relocs = finfo->relocs;
4668 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4669 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4674 /* Relocate the section contents. */
4675 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4677 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4678 (struct reloc_std_external *) relocs,
4679 rel_size, finfo->contents))
4684 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4685 (struct reloc_ext_external *) relocs,
4686 rel_size, finfo->contents))
4690 /* Write out the section contents. */
4691 if (! bfd_set_section_contents (finfo->output_bfd,
4692 input_section->output_section,
4693 (PTR) finfo->contents,
4694 input_section->output_offset,
4698 /* If we are producing relocateable output, the relocs were
4699 modified, and we now write them out. */
4700 if (finfo->info->relocateable && rel_size > 0)
4702 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
4704 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4707 *reloff_ptr += rel_size;
4709 /* Assert that the relocs have not run into the symbols, and
4710 that if these are the text relocs they have not run into the
4712 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4713 && (reloff_ptr != &finfo->treloff
4715 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4721 /* Get the section corresponding to a reloc index. */
4723 static INLINE asection *
4724 aout_reloc_index_to_section (abfd, indx)
4728 switch (indx & N_TYPE)
4731 return obj_textsec (abfd);
4733 return obj_datasec (abfd);
4735 return obj_bsssec (abfd);
4738 return bfd_abs_section_ptr;
4746 /* Relocate an a.out section using standard a.out relocs. */
4749 aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
4751 struct aout_final_link_info *finfo;
4753 asection *input_section;
4754 struct reloc_std_external *relocs;
4755 bfd_size_type rel_size;
4758 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4760 struct aout_link_hash_entry *,
4761 PTR, bfd_byte *, boolean *,
4764 boolean relocateable;
4765 struct external_nlist *syms;
4767 struct aout_link_hash_entry **sym_hashes;
4769 bfd_size_type reloc_count;
4770 register struct reloc_std_external *rel;
4771 struct reloc_std_external *rel_end;
4773 output_bfd = finfo->output_bfd;
4774 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4776 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4777 BFD_ASSERT (input_bfd->xvec->header_byteorder
4778 == output_bfd->xvec->header_byteorder);
4780 relocateable = finfo->info->relocateable;
4781 syms = obj_aout_external_syms (input_bfd);
4782 strings = obj_aout_external_strings (input_bfd);
4783 sym_hashes = obj_aout_sym_hashes (input_bfd);
4784 symbol_map = finfo->symbol_map;
4786 reloc_count = rel_size / RELOC_STD_SIZE;
4788 rel_end = rel + reloc_count;
4789 for (; rel < rel_end; rel++)
4796 reloc_howto_type *howto;
4797 struct aout_link_hash_entry *h = NULL;
4799 bfd_reloc_status_type r;
4801 r_addr = GET_SWORD (input_bfd, rel->r_address);
4803 #ifdef MY_reloc_howto
4804 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4810 unsigned int howto_idx;
4812 if (bfd_header_big_endian (input_bfd))
4814 r_index = ((rel->r_index[0] << 16)
4815 | (rel->r_index[1] << 8)
4817 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4818 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4819 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4820 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4821 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4822 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4823 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4827 r_index = ((rel->r_index[2] << 16)
4828 | (rel->r_index[1] << 8)
4830 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4831 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4832 r_baserel = (0 != (rel->r_type[0]
4833 & RELOC_STD_BITS_BASEREL_LITTLE));
4834 r_jmptable= (0 != (rel->r_type[0]
4835 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4836 r_relative= (0 != (rel->r_type[0]
4837 & RELOC_STD_BITS_RELATIVE_LITTLE));
4838 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4839 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4842 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4843 + 16 * r_jmptable + 32 * r_relative);
4844 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4845 howto = howto_table_std + howto_idx;
4851 /* We are generating a relocateable output file, and must
4852 modify the reloc accordingly. */
4855 /* If we know the symbol this relocation is against,
4856 convert it into a relocation against a section. This
4857 is what the native linker does. */
4858 h = sym_hashes[r_index];
4859 if (h != (struct aout_link_hash_entry *) NULL
4860 && (h->root.type == bfd_link_hash_defined
4861 || h->root.type == bfd_link_hash_defweak))
4863 asection *output_section;
4865 /* Change the r_extern value. */
4866 if (bfd_header_big_endian (output_bfd))
4867 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4869 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4871 /* Compute a new r_index. */
4872 output_section = h->root.u.def.section->output_section;
4873 if (output_section == obj_textsec (output_bfd))
4875 else if (output_section == obj_datasec (output_bfd))
4877 else if (output_section == obj_bsssec (output_bfd))
4882 /* Add the symbol value and the section VMA to the
4883 addend stored in the contents. */
4884 relocation = (h->root.u.def.value
4885 + output_section->vma
4886 + h->root.u.def.section->output_offset);
4890 /* We must change r_index according to the symbol
4892 r_index = symbol_map[r_index];
4898 /* We decided to strip this symbol, but it
4899 turns out that we can't. Note that we
4900 lose the other and desc information here.
4901 I don't think that will ever matter for a
4907 if (! aout_link_write_other_symbol (h,
4917 name = strings + GET_WORD (input_bfd,
4918 syms[r_index].e_strx);
4919 if (! ((*finfo->info->callbacks->unattached_reloc)
4920 (finfo->info, name, input_bfd, input_section,
4930 /* Write out the new r_index value. */
4931 if (bfd_header_big_endian (output_bfd))
4933 rel->r_index[0] = r_index >> 16;
4934 rel->r_index[1] = r_index >> 8;
4935 rel->r_index[2] = r_index;
4939 rel->r_index[2] = r_index >> 16;
4940 rel->r_index[1] = r_index >> 8;
4941 rel->r_index[0] = r_index;
4948 /* This is a relocation against a section. We must
4949 adjust by the amount that the section moved. */
4950 section = aout_reloc_index_to_section (input_bfd, r_index);
4951 relocation = (section->output_section->vma
4952 + section->output_offset
4956 /* Change the address of the relocation. */
4957 PUT_WORD (output_bfd,
4958 r_addr + input_section->output_offset,
4961 /* Adjust a PC relative relocation by removing the reference
4962 to the original address in the section and including the
4963 reference to the new address. */
4965 relocation -= (input_section->output_section->vma
4966 + input_section->output_offset
4967 - input_section->vma);
4969 #ifdef MY_relocatable_reloc
4970 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4973 if (relocation == 0)
4976 r = MY_relocate_contents (howto,
4977 input_bfd, relocation,
4984 /* We are generating an executable, and must do a full
4990 h = sym_hashes[r_index];
4992 if (h != (struct aout_link_hash_entry *) NULL
4993 && (h->root.type == bfd_link_hash_defined
4994 || h->root.type == bfd_link_hash_defweak))
4996 relocation = (h->root.u.def.value
4997 + h->root.u.def.section->output_section->vma
4998 + h->root.u.def.section->output_offset);
5000 else if (h != (struct aout_link_hash_entry *) NULL
5001 && h->root.type == bfd_link_hash_undefweak)
5013 section = aout_reloc_index_to_section (input_bfd, r_index);
5014 relocation = (section->output_section->vma
5015 + section->output_offset
5018 relocation += input_section->vma;
5021 if (check_dynamic_reloc != NULL)
5025 if (! ((*check_dynamic_reloc)
5026 (finfo->info, input_bfd, input_section, h,
5027 (PTR) rel, contents, &skip, &relocation)))
5033 /* Now warn if a global symbol is undefined. We could not
5034 do this earlier, because check_dynamic_reloc might want
5035 to skip this reloc. */
5036 if (hundef && ! finfo->info->shared && ! r_baserel)
5041 name = h->root.root.string;
5043 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5044 if (! ((*finfo->info->callbacks->undefined_symbol)
5045 (finfo->info, name, input_bfd, input_section,
5050 r = MY_final_link_relocate (howto,
5051 input_bfd, input_section,
5052 contents, r_addr, relocation,
5056 if (r != bfd_reloc_ok)
5061 case bfd_reloc_outofrange:
5063 case bfd_reloc_overflow:
5068 name = h->root.root.string;
5070 name = strings + GET_WORD (input_bfd,
5071 syms[r_index].e_strx);
5076 s = aout_reloc_index_to_section (input_bfd, r_index);
5077 name = bfd_section_name (input_bfd, s);
5079 if (! ((*finfo->info->callbacks->reloc_overflow)
5080 (finfo->info, name, howto->name,
5081 (bfd_vma) 0, input_bfd, input_section, r_addr)))
5092 /* Relocate an a.out section using extended a.out relocs. */
5095 aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
5097 struct aout_final_link_info *finfo;
5099 asection *input_section;
5100 struct reloc_ext_external *relocs;
5101 bfd_size_type rel_size;
5104 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
5106 struct aout_link_hash_entry *,
5107 PTR, bfd_byte *, boolean *,
5110 boolean relocateable;
5111 struct external_nlist *syms;
5113 struct aout_link_hash_entry **sym_hashes;
5115 bfd_size_type reloc_count;
5116 register struct reloc_ext_external *rel;
5117 struct reloc_ext_external *rel_end;
5119 output_bfd = finfo->output_bfd;
5120 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
5122 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
5123 BFD_ASSERT (input_bfd->xvec->header_byteorder
5124 == output_bfd->xvec->header_byteorder);
5126 relocateable = finfo->info->relocateable;
5127 syms = obj_aout_external_syms (input_bfd);
5128 strings = obj_aout_external_strings (input_bfd);
5129 sym_hashes = obj_aout_sym_hashes (input_bfd);
5130 symbol_map = finfo->symbol_map;
5132 reloc_count = rel_size / RELOC_EXT_SIZE;
5134 rel_end = rel + reloc_count;
5135 for (; rel < rel_end; rel++)
5140 unsigned int r_type;
5142 struct aout_link_hash_entry *h = NULL;
5143 asection *r_section = NULL;
5146 r_addr = GET_SWORD (input_bfd, rel->r_address);
5148 if (bfd_header_big_endian (input_bfd))
5150 r_index = ((rel->r_index[0] << 16)
5151 | (rel->r_index[1] << 8)
5153 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
5154 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
5155 >> RELOC_EXT_BITS_TYPE_SH_BIG);
5159 r_index = ((rel->r_index[2] << 16)
5160 | (rel->r_index[1] << 8)
5162 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
5163 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
5164 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
5167 r_addend = GET_SWORD (input_bfd, rel->r_addend);
5169 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
5173 /* We are generating a relocateable output file, and must
5174 modify the reloc accordingly. */
5176 || r_type == RELOC_BASE10
5177 || r_type == RELOC_BASE13
5178 || r_type == RELOC_BASE22)
5180 /* If we know the symbol this relocation is against,
5181 convert it into a relocation against a section. This
5182 is what the native linker does. */
5183 if (r_type == RELOC_BASE10
5184 || r_type == RELOC_BASE13
5185 || r_type == RELOC_BASE22)
5188 h = sym_hashes[r_index];
5189 if (h != (struct aout_link_hash_entry *) NULL
5190 && (h->root.type == bfd_link_hash_defined
5191 || h->root.type == bfd_link_hash_defweak))
5193 asection *output_section;
5195 /* Change the r_extern value. */
5196 if (bfd_header_big_endian (output_bfd))
5197 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
5199 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
5201 /* Compute a new r_index. */
5202 output_section = h->root.u.def.section->output_section;
5203 if (output_section == obj_textsec (output_bfd))
5205 else if (output_section == obj_datasec (output_bfd))
5207 else if (output_section == obj_bsssec (output_bfd))
5212 /* Add the symbol value and the section VMA to the
5214 relocation = (h->root.u.def.value
5215 + output_section->vma
5216 + h->root.u.def.section->output_offset);
5218 /* Now RELOCATION is the VMA of the final
5219 destination. If this is a PC relative reloc,
5220 then ADDEND is the negative of the source VMA.
5221 We want to set ADDEND to the difference between
5222 the destination VMA and the source VMA, which
5223 means we must adjust RELOCATION by the change in
5224 the source VMA. This is done below. */
5228 /* We must change r_index according to the symbol
5230 r_index = symbol_map[r_index];
5236 /* We decided to strip this symbol, but it
5237 turns out that we can't. Note that we
5238 lose the other and desc information here.
5239 I don't think that will ever matter for a
5245 if (! aout_link_write_other_symbol (h,
5255 name = strings + GET_WORD (input_bfd,
5256 syms[r_index].e_strx);
5257 if (! ((*finfo->info->callbacks->unattached_reloc)
5258 (finfo->info, name, input_bfd, input_section,
5267 /* If this is a PC relative reloc, then the addend
5268 is the negative of the source VMA. We must
5269 adjust it by the change in the source VMA. This
5273 /* Write out the new r_index value. */
5274 if (bfd_header_big_endian (output_bfd))
5276 rel->r_index[0] = r_index >> 16;
5277 rel->r_index[1] = r_index >> 8;
5278 rel->r_index[2] = r_index;
5282 rel->r_index[2] = r_index >> 16;
5283 rel->r_index[1] = r_index >> 8;
5284 rel->r_index[0] = r_index;
5289 /* This is a relocation against a section. We must
5290 adjust by the amount that the section moved. */
5291 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5292 relocation = (r_section->output_section->vma
5293 + r_section->output_offset
5296 /* If this is a PC relative reloc, then the addend is
5297 the difference in VMA between the destination and the
5298 source. We have just adjusted for the change in VMA
5299 of the destination, so we must also adjust by the
5300 change in VMA of the source. This is done below. */
5303 /* As described above, we must always adjust a PC relative
5304 reloc by the change in VMA of the source. However, if
5305 pcrel_offset is set, then the addend does not include the
5306 location within the section, in which case we don't need
5307 to adjust anything. */
5308 if (howto_table_ext[r_type].pc_relative
5309 && ! howto_table_ext[r_type].pcrel_offset)
5310 relocation -= (input_section->output_section->vma
5311 + input_section->output_offset
5312 - input_section->vma);
5314 /* Change the addend if necessary. */
5315 if (relocation != 0)
5316 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
5318 /* Change the address of the relocation. */
5319 PUT_WORD (output_bfd,
5320 r_addr + input_section->output_offset,
5326 bfd_reloc_status_type r;
5328 /* We are generating an executable, and must do a full
5334 h = sym_hashes[r_index];
5336 if (h != (struct aout_link_hash_entry *) NULL
5337 && (h->root.type == bfd_link_hash_defined
5338 || h->root.type == bfd_link_hash_defweak))
5340 relocation = (h->root.u.def.value
5341 + h->root.u.def.section->output_section->vma
5342 + h->root.u.def.section->output_offset);
5344 else if (h != (struct aout_link_hash_entry *) NULL
5345 && h->root.type == bfd_link_hash_undefweak)
5353 else if (r_type == RELOC_BASE10
5354 || r_type == RELOC_BASE13
5355 || r_type == RELOC_BASE22)
5357 struct external_nlist *sym;
5360 /* For base relative relocs, r_index is always an index
5361 into the symbol table, even if r_extern is 0. */
5362 sym = syms + r_index;
5363 type = bfd_h_get_8 (input_bfd, sym->e_type);
5364 if ((type & N_TYPE) == N_TEXT
5366 r_section = obj_textsec (input_bfd);
5367 else if ((type & N_TYPE) == N_DATA
5369 r_section = obj_datasec (input_bfd);
5370 else if ((type & N_TYPE) == N_BSS
5372 r_section = obj_bsssec (input_bfd);
5373 else if ((type & N_TYPE) == N_ABS
5375 r_section = bfd_abs_section_ptr;
5378 relocation = (r_section->output_section->vma
5379 + r_section->output_offset
5380 + (GET_WORD (input_bfd, sym->e_value)
5385 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5387 /* If this is a PC relative reloc, then R_ADDEND is the
5388 difference between the two vmas, or
5389 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5391 old_dest_sec == section->vma
5393 old_src_sec == input_section->vma
5395 old_src_off == r_addr
5397 _bfd_final_link_relocate expects RELOCATION +
5398 R_ADDEND to be the VMA of the destination minus
5399 r_addr (the minus r_addr is because this relocation
5400 is not pcrel_offset, which is a bit confusing and
5401 should, perhaps, be changed), or
5404 new_dest_sec == output_section->vma + output_offset
5405 We arrange for this to happen by setting RELOCATION to
5406 new_dest_sec + old_src_sec - old_dest_sec
5408 If this is not a PC relative reloc, then R_ADDEND is
5409 simply the VMA of the destination, so we set
5410 RELOCATION to the change in the destination VMA, or
5411 new_dest_sec - old_dest_sec
5413 relocation = (r_section->output_section->vma
5414 + r_section->output_offset
5416 if (howto_table_ext[r_type].pc_relative)
5417 relocation += input_section->vma;
5420 if (check_dynamic_reloc != NULL)
5424 if (! ((*check_dynamic_reloc)
5425 (finfo->info, input_bfd, input_section, h,
5426 (PTR) rel, contents, &skip, &relocation)))
5432 /* Now warn if a global symbol is undefined. We could not
5433 do this earlier, because check_dynamic_reloc might want
5434 to skip this reloc. */
5436 && ! finfo->info->shared
5437 && r_type != RELOC_BASE10
5438 && r_type != RELOC_BASE13
5439 && r_type != RELOC_BASE22)
5444 name = h->root.root.string;
5446 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5447 if (! ((*finfo->info->callbacks->undefined_symbol)
5448 (finfo->info, name, input_bfd, input_section,
5453 if (r_type != RELOC_SPARC_REV32)
5454 r = MY_final_link_relocate (howto_table_ext + r_type,
5455 input_bfd, input_section,
5456 contents, r_addr, relocation,
5462 x = bfd_get_32 (input_bfd, contents + r_addr);
5463 x = x + relocation + r_addend;
5464 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
5468 if (r != bfd_reloc_ok)
5473 case bfd_reloc_outofrange:
5475 case bfd_reloc_overflow:
5480 name = h->root.root.string;
5482 || r_type == RELOC_BASE10
5483 || r_type == RELOC_BASE13
5484 || r_type == RELOC_BASE22)
5485 name = strings + GET_WORD (input_bfd,
5486 syms[r_index].e_strx);
5491 s = aout_reloc_index_to_section (input_bfd, r_index);
5492 name = bfd_section_name (input_bfd, s);
5494 if (! ((*finfo->info->callbacks->reloc_overflow)
5495 (finfo->info, name, howto_table_ext[r_type].name,
5496 r_addend, input_bfd, input_section, r_addr)))
5508 /* Handle a link order which is supposed to generate a reloc. */
5511 aout_link_reloc_link_order (finfo, o, p)
5512 struct aout_final_link_info *finfo;
5514 struct bfd_link_order *p;
5516 struct bfd_link_order_reloc *pr;
5519 reloc_howto_type *howto;
5520 file_ptr *reloff_ptr = NULL;
5521 struct reloc_std_external srel;
5522 struct reloc_ext_external erel;
5527 if (p->type == bfd_section_reloc_link_order)
5530 if (bfd_is_abs_section (pr->u.section))
5531 r_index = N_ABS | N_EXT;
5534 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5535 r_index = pr->u.section->target_index;
5540 struct aout_link_hash_entry *h;
5542 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5544 h = ((struct aout_link_hash_entry *)
5545 bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info,
5546 pr->u.name, false, false, true));
5547 if (h != (struct aout_link_hash_entry *) NULL
5552 /* We decided to strip this symbol, but it turns out that we
5553 can't. Note that we lose the other and desc information
5554 here. I don't think that will ever matter for a global
5558 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5564 if (! ((*finfo->info->callbacks->unattached_reloc)
5565 (finfo->info, pr->u.name, (bfd *) NULL,
5566 (asection *) NULL, (bfd_vma) 0)))
5572 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
5575 bfd_set_error (bfd_error_bad_value);
5579 if (o == obj_textsec (finfo->output_bfd))
5580 reloff_ptr = &finfo->treloff;
5581 else if (o == obj_datasec (finfo->output_bfd))
5582 reloff_ptr = &finfo->dreloff;
5586 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5589 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5599 r_pcrel = howto->pc_relative;
5600 r_baserel = (howto->type & 8) != 0;
5601 r_jmptable = (howto->type & 16) != 0;
5602 r_relative = (howto->type & 32) != 0;
5603 r_length = howto->size;
5605 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5606 if (bfd_header_big_endian (finfo->output_bfd))
5608 srel.r_index[0] = r_index >> 16;
5609 srel.r_index[1] = r_index >> 8;
5610 srel.r_index[2] = r_index;
5612 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5613 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5614 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5615 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5616 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5617 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5621 srel.r_index[2] = r_index >> 16;
5622 srel.r_index[1] = r_index >> 8;
5623 srel.r_index[0] = r_index;
5625 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5626 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5627 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5628 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5629 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5630 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5634 rel_ptr = (PTR) &srel;
5636 /* We have to write the addend into the object file, since
5637 standard a.out relocs are in place. It would be more
5638 reliable if we had the current contents of the file here,
5639 rather than assuming zeroes, but we can't read the file since
5640 it was opened using bfd_openw. */
5641 if (pr->addend != 0)
5644 bfd_reloc_status_type r;
5648 size = bfd_get_reloc_size (howto);
5649 buf = (bfd_byte *) bfd_zmalloc (size);
5650 if (buf == (bfd_byte *) NULL)
5652 r = MY_relocate_contents (howto, finfo->output_bfd,
5659 case bfd_reloc_outofrange:
5661 case bfd_reloc_overflow:
5662 if (! ((*finfo->info->callbacks->reloc_overflow)
5664 (p->type == bfd_section_reloc_link_order
5665 ? bfd_section_name (finfo->output_bfd,
5668 howto->name, pr->addend, (bfd *) NULL,
5669 (asection *) NULL, (bfd_vma) 0)))
5676 ok = bfd_set_section_contents (finfo->output_bfd, o,
5678 (file_ptr) p->offset,
5687 #ifdef MY_put_ext_reloc
5688 MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset,
5689 howto, &erel, pr->addend);
5691 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5693 if (bfd_header_big_endian (finfo->output_bfd))
5695 erel.r_index[0] = r_index >> 16;
5696 erel.r_index[1] = r_index >> 8;
5697 erel.r_index[2] = r_index;
5699 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5700 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5704 erel.r_index[2] = r_index >> 16;
5705 erel.r_index[1] = r_index >> 8;
5706 erel.r_index[0] = r_index;
5708 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5709 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5712 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5713 #endif /* MY_put_ext_reloc */
5715 rel_ptr = (PTR) &erel;
5718 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5719 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5720 obj_reloc_entry_size (finfo->output_bfd),
5722 != obj_reloc_entry_size (finfo->output_bfd)))
5725 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5727 /* Assert that the relocs have not run into the symbols, and that n
5728 the text relocs have not run into the data relocs. */
5729 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5730 && (reloff_ptr != &finfo->treloff
5732 <= obj_datasec (finfo->output_bfd)->rel_filepos)));